Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * fs/nfs/nfs4proc.c | |
3 | * | |
4 | * Client-side procedure declarations for NFSv4. | |
5 | * | |
6 | * Copyright (c) 2002 The Regents of the University of Michigan. | |
7 | * All rights reserved. | |
8 | * | |
9 | * Kendrick Smith <kmsmith@umich.edu> | |
10 | * Andy Adamson <andros@umich.edu> | |
11 | * | |
12 | * Redistribution and use in source and binary forms, with or without | |
13 | * modification, are permitted provided that the following conditions | |
14 | * are met: | |
15 | * | |
16 | * 1. Redistributions of source code must retain the above copyright | |
17 | * notice, this list of conditions and the following disclaimer. | |
18 | * 2. Redistributions in binary form must reproduce the above copyright | |
19 | * notice, this list of conditions and the following disclaimer in the | |
20 | * documentation and/or other materials provided with the distribution. | |
21 | * 3. Neither the name of the University nor the names of its | |
22 | * contributors may be used to endorse or promote products derived | |
23 | * from this software without specific prior written permission. | |
24 | * | |
25 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED | |
26 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF | |
27 | * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE | |
28 | * DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | |
29 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR | |
30 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF | |
31 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR | |
32 | * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF | |
33 | * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING | |
34 | * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS | |
35 | * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
36 | */ | |
37 | ||
38 | #include <linux/mm.h> | |
1da177e4 LT |
39 | #include <linux/delay.h> |
40 | #include <linux/errno.h> | |
41 | #include <linux/string.h> | |
652f89f6 TM |
42 | #include <linux/ratelimit.h> |
43 | #include <linux/printk.h> | |
5a0e3ad6 | 44 | #include <linux/slab.h> |
1da177e4 LT |
45 | #include <linux/sunrpc/clnt.h> |
46 | #include <linux/nfs.h> | |
47 | #include <linux/nfs4.h> | |
48 | #include <linux/nfs_fs.h> | |
49 | #include <linux/nfs_page.h> | |
9b7160c5 | 50 | #include <linux/nfs_mount.h> |
1da177e4 | 51 | #include <linux/namei.h> |
02a913a7 | 52 | #include <linux/mount.h> |
99fe60d0 | 53 | #include <linux/module.h> |
64c2ce8b | 54 | #include <linux/xattr.h> |
c7a360b0 | 55 | #include <linux/utsname.h> |
d310310c | 56 | #include <linux/freezer.h> |
1eb5d98f | 57 | #include <linux/iversion.h> |
1da177e4 | 58 | |
4ce79717 | 59 | #include "nfs4_fs.h" |
1da177e4 | 60 | #include "delegation.h" |
101070ca | 61 | #include "internal.h" |
006ea73e | 62 | #include "iostat.h" |
fc931582 | 63 | #include "callback.h" |
b1f69b75 | 64 | #include "pnfs.h" |
f092075d | 65 | #include "netns.h" |
39d43d16 | 66 | #include "sysfs.h" |
40c64c26 | 67 | #include "nfs4idmap.h" |
73e39aaa | 68 | #include "nfs4session.h" |
de242c0b | 69 | #include "fscache.h" |
012a211a | 70 | #include "nfs42.h" |
1da177e4 | 71 | |
c6d01c6f TM |
72 | #include "nfs4trace.h" |
73 | ||
1da177e4 LT |
74 | #define NFSDBG_FACILITY NFSDBG_PROC |
75 | ||
30846df0 TM |
76 | #define NFS4_BITMASK_SZ 3 |
77 | ||
2066fe89 | 78 | #define NFS4_POLL_RETRY_MIN (HZ/10) |
1da177e4 LT |
79 | #define NFS4_POLL_RETRY_MAX (15*HZ) |
80 | ||
a1d1c4f1 TM |
81 | /* file attributes which can be mapped to nfs attributes */ |
82 | #define NFS4_VALID_ATTRS (ATTR_MODE \ | |
83 | | ATTR_UID \ | |
84 | | ATTR_GID \ | |
85 | | ATTR_SIZE \ | |
86 | | ATTR_ATIME \ | |
87 | | ATTR_MTIME \ | |
88 | | ATTR_CTIME \ | |
89 | | ATTR_ATIME_SET \ | |
90 | | ATTR_MTIME_SET) | |
91 | ||
cdd4e68b | 92 | struct nfs4_opendata; |
b257957e | 93 | static int _nfs4_recover_proc_open(struct nfs4_opendata *data); |
1da177e4 | 94 | static int nfs4_do_fsinfo(struct nfs_server *, struct nfs_fh *, struct nfs_fsinfo *); |
81934ddb | 95 | static void nfs_fixup_referral_attributes(struct nfs_fattr *fattr); |
a841b54d | 96 | static int _nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fattr *fattr, struct nfs4_label *label, struct inode *inode); |
a52458b4 | 97 | static int nfs4_do_setattr(struct inode *inode, const struct cred *cred, |
0ab64e0e | 98 | struct nfs_fattr *fattr, struct iattr *sattr, |
29b59f94 | 99 | struct nfs_open_context *ctx, struct nfs4_label *ilabel, |
1775fd3e | 100 | struct nfs4_label *olabel); |
f062eb6c | 101 | #ifdef CONFIG_NFS_V4_1 |
3be0f80b | 102 | static struct rpc_task *_nfs41_proc_sequence(struct nfs_client *clp, |
a52458b4 | 103 | const struct cred *cred, |
3be0f80b TM |
104 | struct nfs4_slot *slot, |
105 | bool is_privileged); | |
ab7cb0df | 106 | static int nfs41_test_stateid(struct nfs_server *, nfs4_stateid *, |
a52458b4 | 107 | const struct cred *); |
f0b0bf88 | 108 | static int nfs41_free_stateid(struct nfs_server *, const nfs4_stateid *, |
a52458b4 | 109 | const struct cred *, bool); |
f062eb6c | 110 | #endif |
332d1a03 TM |
111 | static void nfs4_bitmask_set(__u32 bitmask[NFS4_BITMASK_SZ], |
112 | const __u32 *src, struct inode *inode, | |
113 | struct nfs_server *server, | |
114 | struct nfs4_label *label); | |
aa9c2669 DQ |
115 | |
116 | #ifdef CONFIG_NFS_V4_SECURITY_LABEL | |
117 | static inline struct nfs4_label * | |
118 | nfs4_label_init_security(struct inode *dir, struct dentry *dentry, | |
119 | struct iattr *sattr, struct nfs4_label *label) | |
120 | { | |
121 | int err; | |
122 | ||
123 | if (label == NULL) | |
124 | return NULL; | |
125 | ||
126 | if (nfs_server_capable(dir, NFS_CAP_SECURITY_LABEL) == 0) | |
127 | return NULL; | |
128 | ||
aa9c2669 DQ |
129 | err = security_dentry_init_security(dentry, sattr->ia_mode, |
130 | &dentry->d_name, (void **)&label->label, &label->len); | |
131 | if (err == 0) | |
132 | return label; | |
133 | ||
134 | return NULL; | |
135 | } | |
136 | static inline void | |
137 | nfs4_label_release_security(struct nfs4_label *label) | |
138 | { | |
139 | if (label) | |
140 | security_release_secctx(label->label, label->len); | |
141 | } | |
142 | static inline u32 *nfs4_bitmask(struct nfs_server *server, struct nfs4_label *label) | |
143 | { | |
144 | if (label) | |
145 | return server->attr_bitmask; | |
146 | ||
147 | return server->attr_bitmask_nl; | |
148 | } | |
149 | #else | |
150 | static inline struct nfs4_label * | |
151 | nfs4_label_init_security(struct inode *dir, struct dentry *dentry, | |
152 | struct iattr *sattr, struct nfs4_label *l) | |
153 | { return NULL; } | |
154 | static inline void | |
155 | nfs4_label_release_security(struct nfs4_label *label) | |
156 | { return; } | |
157 | static inline u32 * | |
158 | nfs4_bitmask(struct nfs_server *server, struct nfs4_label *label) | |
159 | { return server->attr_bitmask; } | |
160 | #endif | |
161 | ||
1da177e4 | 162 | /* Prevent leaks of NFSv4 errors into userland */ |
46f72f57 | 163 | static int nfs4_map_errors(int err) |
1da177e4 | 164 | { |
52567b03 TM |
165 | if (err >= -1000) |
166 | return err; | |
167 | switch (err) { | |
168 | case -NFS4ERR_RESOURCE: | |
30005121 WAA |
169 | case -NFS4ERR_LAYOUTTRYLATER: |
170 | case -NFS4ERR_RECALLCONFLICT: | |
52567b03 | 171 | return -EREMOTEIO; |
7ebb9315 | 172 | case -NFS4ERR_WRONGSEC: |
8897538e | 173 | case -NFS4ERR_WRONG_CRED: |
7ebb9315 | 174 | return -EPERM; |
3ddeb7c5 TM |
175 | case -NFS4ERR_BADOWNER: |
176 | case -NFS4ERR_BADNAME: | |
177 | return -EINVAL; | |
fb13bfa7 TM |
178 | case -NFS4ERR_SHARE_DENIED: |
179 | return -EACCES; | |
f25efd85 SD |
180 | case -NFS4ERR_MINOR_VERS_MISMATCH: |
181 | return -EPROTONOSUPPORT; | |
6e3cf241 TM |
182 | case -NFS4ERR_FILE_OPEN: |
183 | return -EBUSY; | |
9fff59ed TM |
184 | case -NFS4ERR_NOT_SAME: |
185 | return -ENOTSYNC; | |
52567b03 | 186 | default: |
1da177e4 | 187 | dprintk("%s could not handle NFSv4 error %d\n", |
3110ff80 | 188 | __func__, -err); |
52567b03 | 189 | break; |
1da177e4 | 190 | } |
52567b03 | 191 | return -EIO; |
1da177e4 LT |
192 | } |
193 | ||
194 | /* | |
195 | * This is our standard bitmap for GETATTR requests. | |
196 | */ | |
1549210f | 197 | const u32 nfs4_fattr_bitmap[3] = { |
1da177e4 LT |
198 | FATTR4_WORD0_TYPE |
199 | | FATTR4_WORD0_CHANGE | |
200 | | FATTR4_WORD0_SIZE | |
201 | | FATTR4_WORD0_FSID | |
202 | | FATTR4_WORD0_FILEID, | |
203 | FATTR4_WORD1_MODE | |
204 | | FATTR4_WORD1_NUMLINKS | |
205 | | FATTR4_WORD1_OWNER | |
206 | | FATTR4_WORD1_OWNER_GROUP | |
207 | | FATTR4_WORD1_RAWDEV | |
208 | | FATTR4_WORD1_SPACE_USED | |
209 | | FATTR4_WORD1_TIME_ACCESS | |
210 | | FATTR4_WORD1_TIME_METADATA | |
ea96d1ec AS |
211 | | FATTR4_WORD1_TIME_MODIFY |
212 | | FATTR4_WORD1_MOUNTED_ON_FILEID, | |
aa9c2669 DQ |
213 | #ifdef CONFIG_NFS_V4_SECURITY_LABEL |
214 | FATTR4_WORD2_SECURITY_LABEL | |
215 | #endif | |
1da177e4 LT |
216 | }; |
217 | ||
1549210f TM |
218 | static const u32 nfs4_pnfs_open_bitmap[3] = { |
219 | FATTR4_WORD0_TYPE | |
220 | | FATTR4_WORD0_CHANGE | |
221 | | FATTR4_WORD0_SIZE | |
222 | | FATTR4_WORD0_FSID | |
223 | | FATTR4_WORD0_FILEID, | |
224 | FATTR4_WORD1_MODE | |
225 | | FATTR4_WORD1_NUMLINKS | |
226 | | FATTR4_WORD1_OWNER | |
227 | | FATTR4_WORD1_OWNER_GROUP | |
228 | | FATTR4_WORD1_RAWDEV | |
229 | | FATTR4_WORD1_SPACE_USED | |
230 | | FATTR4_WORD1_TIME_ACCESS | |
231 | | FATTR4_WORD1_TIME_METADATA | |
232 | | FATTR4_WORD1_TIME_MODIFY, | |
233 | FATTR4_WORD2_MDSTHRESHOLD | |
95864c91 TM |
234 | #ifdef CONFIG_NFS_V4_SECURITY_LABEL |
235 | | FATTR4_WORD2_SECURITY_LABEL | |
236 | #endif | |
1549210f TM |
237 | }; |
238 | ||
e23008ec AA |
239 | static const u32 nfs4_open_noattr_bitmap[3] = { |
240 | FATTR4_WORD0_TYPE | |
e23008ec AA |
241 | | FATTR4_WORD0_FILEID, |
242 | }; | |
243 | ||
a09df2ca | 244 | const u32 nfs4_statfs_bitmap[3] = { |
1da177e4 LT |
245 | FATTR4_WORD0_FILES_AVAIL |
246 | | FATTR4_WORD0_FILES_FREE | |
247 | | FATTR4_WORD0_FILES_TOTAL, | |
248 | FATTR4_WORD1_SPACE_AVAIL | |
249 | | FATTR4_WORD1_SPACE_FREE | |
250 | | FATTR4_WORD1_SPACE_TOTAL | |
251 | }; | |
252 | ||
a09df2ca | 253 | const u32 nfs4_pathconf_bitmap[3] = { |
1da177e4 LT |
254 | FATTR4_WORD0_MAXLINK |
255 | | FATTR4_WORD0_MAXNAME, | |
256 | 0 | |
257 | }; | |
258 | ||
dae100c2 | 259 | const u32 nfs4_fsinfo_bitmap[3] = { FATTR4_WORD0_MAXFILESIZE |
1da177e4 LT |
260 | | FATTR4_WORD0_MAXREAD |
261 | | FATTR4_WORD0_MAXWRITE | |
262 | | FATTR4_WORD0_LEASE_TIME, | |
55b6e774 | 263 | FATTR4_WORD1_TIME_DELTA |
dae100c2 FI |
264 | | FATTR4_WORD1_FS_LAYOUT_TYPES, |
265 | FATTR4_WORD2_LAYOUT_BLKSIZE | |
2a92ee92 | 266 | | FATTR4_WORD2_CLONE_BLKSIZE |
7f08a335 | 267 | | FATTR4_WORD2_CHANGE_ATTR_TYPE |
b78ef845 | 268 | | FATTR4_WORD2_XATTR_SUPPORT |
1da177e4 LT |
269 | }; |
270 | ||
a09df2ca | 271 | const u32 nfs4_fs_locations_bitmap[3] = { |
c05cefcc | 272 | FATTR4_WORD0_CHANGE |
830b8e33 MN |
273 | | FATTR4_WORD0_SIZE |
274 | | FATTR4_WORD0_FSID | |
275 | | FATTR4_WORD0_FILEID | |
276 | | FATTR4_WORD0_FS_LOCATIONS, | |
c05cefcc | 277 | FATTR4_WORD1_OWNER |
830b8e33 MN |
278 | | FATTR4_WORD1_OWNER_GROUP |
279 | | FATTR4_WORD1_RAWDEV | |
280 | | FATTR4_WORD1_SPACE_USED | |
281 | | FATTR4_WORD1_TIME_ACCESS | |
282 | | FATTR4_WORD1_TIME_METADATA | |
283 | | FATTR4_WORD1_TIME_MODIFY | |
a09df2ca | 284 | | FATTR4_WORD1_MOUNTED_ON_FILEID, |
830b8e33 MN |
285 | }; |
286 | ||
30846df0 | 287 | static void nfs4_bitmap_copy_adjust(__u32 *dst, const __u32 *src, |
a71029b8 | 288 | struct inode *inode, unsigned long flags) |
30846df0 TM |
289 | { |
290 | unsigned long cache_validity; | |
291 | ||
292 | memcpy(dst, src, NFS4_BITMASK_SZ*sizeof(*dst)); | |
293 | if (!inode || !nfs4_have_delegation(inode, FMODE_READ)) | |
294 | return; | |
295 | ||
a71029b8 | 296 | cache_validity = READ_ONCE(NFS_I(inode)->cache_validity) | flags; |
30846df0 | 297 | |
a71029b8 TM |
298 | /* Remove the attributes over which we have full control */ |
299 | dst[1] &= ~FATTR4_WORD1_RAWDEV; | |
30846df0 TM |
300 | if (!(cache_validity & NFS_INO_INVALID_SIZE)) |
301 | dst[0] &= ~FATTR4_WORD0_SIZE; | |
302 | ||
303 | if (!(cache_validity & NFS_INO_INVALID_CHANGE)) | |
304 | dst[0] &= ~FATTR4_WORD0_CHANGE; | |
30846df0 | 305 | |
720869eb TM |
306 | if (!(cache_validity & NFS_INO_INVALID_MODE)) |
307 | dst[1] &= ~FATTR4_WORD1_MODE; | |
a71029b8 | 308 | if (!(cache_validity & NFS_INO_INVALID_OTHER)) |
720869eb | 309 | dst[1] &= ~(FATTR4_WORD1_OWNER | FATTR4_WORD1_OWNER_GROUP); |
30846df0 TM |
310 | } |
311 | ||
bc4785cd | 312 | static void nfs4_setup_readdir(u64 cookie, __be32 *verifier, struct dentry *dentry, |
1da177e4 LT |
313 | struct nfs4_readdir_arg *readdir) |
314 | { | |
18fe6a23 | 315 | unsigned int attrs = FATTR4_WORD0_FILEID | FATTR4_WORD0_TYPE; |
0dbb4c67 | 316 | __be32 *start, *p; |
1da177e4 | 317 | |
1da177e4 | 318 | if (cookie > 2) { |
b7ef1956 | 319 | readdir->cookie = cookie; |
1da177e4 LT |
320 | memcpy(&readdir->verifier, verifier, sizeof(readdir->verifier)); |
321 | return; | |
322 | } | |
323 | ||
324 | readdir->cookie = 0; | |
325 | memset(&readdir->verifier, 0, sizeof(readdir->verifier)); | |
326 | if (cookie == 2) | |
327 | return; | |
328 | ||
329 | /* | |
330 | * NFSv4 servers do not return entries for '.' and '..' | |
331 | * Therefore, we fake these entries here. We let '.' | |
332 | * have cookie 0 and '..' have cookie 1. Note that | |
333 | * when talking to the server, we always send cookie 0 | |
334 | * instead of 1 or 2. | |
335 | */ | |
2b86ce2d | 336 | start = p = kmap_atomic(*readdir->pages); |
1da177e4 LT |
337 | |
338 | if (cookie == 0) { | |
339 | *p++ = xdr_one; /* next */ | |
340 | *p++ = xdr_zero; /* cookie, first word */ | |
341 | *p++ = xdr_one; /* cookie, second word */ | |
342 | *p++ = xdr_one; /* entry len */ | |
343 | memcpy(p, ".\0\0\0", 4); /* entry */ | |
344 | p++; | |
345 | *p++ = xdr_one; /* bitmap length */ | |
18fe6a23 AS |
346 | *p++ = htonl(attrs); /* bitmap */ |
347 | *p++ = htonl(12); /* attribute buffer length */ | |
348 | *p++ = htonl(NF4DIR); | |
2b0143b5 | 349 | p = xdr_encode_hyper(p, NFS_FILEID(d_inode(dentry))); |
1da177e4 LT |
350 | } |
351 | ||
352 | *p++ = xdr_one; /* next */ | |
353 | *p++ = xdr_zero; /* cookie, first word */ | |
354 | *p++ = xdr_two; /* cookie, second word */ | |
355 | *p++ = xdr_two; /* entry len */ | |
356 | memcpy(p, "..\0\0", 4); /* entry */ | |
357 | p++; | |
358 | *p++ = xdr_one; /* bitmap length */ | |
18fe6a23 AS |
359 | *p++ = htonl(attrs); /* bitmap */ |
360 | *p++ = htonl(12); /* attribute buffer length */ | |
361 | *p++ = htonl(NF4DIR); | |
2b0143b5 | 362 | p = xdr_encode_hyper(p, NFS_FILEID(d_inode(dentry->d_parent))); |
1da177e4 LT |
363 | |
364 | readdir->pgbase = (char *)p - (char *)start; | |
365 | readdir->count -= readdir->pgbase; | |
2b86ce2d | 366 | kunmap_atomic(start); |
1da177e4 LT |
367 | } |
368 | ||
26d36301 TM |
369 | static void nfs4_test_and_free_stateid(struct nfs_server *server, |
370 | nfs4_stateid *stateid, | |
a52458b4 | 371 | const struct cred *cred) |
26d36301 TM |
372 | { |
373 | const struct nfs4_minor_version_ops *ops = server->nfs_client->cl_mvops; | |
374 | ||
375 | ops->test_and_free_expired(server, stateid, cred); | |
376 | } | |
377 | ||
378 | static void __nfs4_free_revoked_stateid(struct nfs_server *server, | |
379 | nfs4_stateid *stateid, | |
a52458b4 | 380 | const struct cred *cred) |
26d36301 TM |
381 | { |
382 | stateid->type = NFS4_REVOKED_STATEID_TYPE; | |
383 | nfs4_test_and_free_stateid(server, stateid, cred); | |
384 | } | |
385 | ||
386 | static void nfs4_free_revoked_stateid(struct nfs_server *server, | |
387 | const nfs4_stateid *stateid, | |
a52458b4 | 388 | const struct cred *cred) |
26d36301 TM |
389 | { |
390 | nfs4_stateid tmp; | |
391 | ||
392 | nfs4_stateid_copy(&tmp, stateid); | |
393 | __nfs4_free_revoked_stateid(server, &tmp, cred); | |
394 | } | |
395 | ||
8478eaa1 N |
396 | static long nfs4_update_delay(long *timeout) |
397 | { | |
398 | long ret; | |
399 | if (!timeout) | |
400 | return NFS4_POLL_RETRY_MAX; | |
401 | if (*timeout <= 0) | |
402 | *timeout = NFS4_POLL_RETRY_MIN; | |
403 | if (*timeout > NFS4_POLL_RETRY_MAX) | |
404 | *timeout = NFS4_POLL_RETRY_MAX; | |
405 | ret = *timeout; | |
406 | *timeout <<= 1; | |
407 | return ret; | |
408 | } | |
409 | ||
0688e64b | 410 | static int nfs4_delay_killable(long *timeout) |
65de872e | 411 | { |
65de872e TM |
412 | might_sleep(); |
413 | ||
8478eaa1 N |
414 | freezable_schedule_timeout_killable_unsafe( |
415 | nfs4_update_delay(timeout)); | |
0688e64b TM |
416 | if (!__fatal_signal_pending(current)) |
417 | return 0; | |
418 | return -EINTR; | |
419 | } | |
420 | ||
421 | static int nfs4_delay_interruptible(long *timeout) | |
422 | { | |
423 | might_sleep(); | |
424 | ||
59679d99 | 425 | freezable_schedule_timeout_interruptible_unsafe(nfs4_update_delay(timeout)); |
0688e64b TM |
426 | if (!signal_pending(current)) |
427 | return 0; | |
428 | return __fatal_signal_pending(current) ? -EINTR :-ERESTARTSYS; | |
429 | } | |
430 | ||
431 | static int nfs4_delay(long *timeout, bool interruptible) | |
432 | { | |
433 | if (interruptible) | |
434 | return nfs4_delay_interruptible(timeout); | |
435 | return nfs4_delay_killable(timeout); | |
65de872e TM |
436 | } |
437 | ||
50c80007 TM |
438 | static const nfs4_stateid * |
439 | nfs4_recoverable_stateid(const nfs4_stateid *stateid) | |
440 | { | |
441 | if (!stateid) | |
442 | return NULL; | |
443 | switch (stateid->type) { | |
444 | case NFS4_OPEN_STATEID_TYPE: | |
445 | case NFS4_LOCK_STATEID_TYPE: | |
446 | case NFS4_DELEGATION_STATEID_TYPE: | |
447 | return stateid; | |
448 | default: | |
449 | break; | |
450 | } | |
451 | return NULL; | |
452 | } | |
453 | ||
65de872e TM |
454 | /* This is the error handling routine for processes that are allowed |
455 | * to sleep. | |
456 | */ | |
b3c2aa07 TM |
457 | static int nfs4_do_handle_exception(struct nfs_server *server, |
458 | int errorcode, struct nfs4_exception *exception) | |
65de872e TM |
459 | { |
460 | struct nfs_client *clp = server->nfs_client; | |
9e33bed5 | 461 | struct nfs4_state *state = exception->state; |
50c80007 | 462 | const nfs4_stateid *stateid; |
3114ea7a | 463 | struct inode *inode = exception->inode; |
65de872e TM |
464 | int ret = errorcode; |
465 | ||
b3c2aa07 TM |
466 | exception->delay = 0; |
467 | exception->recovering = 0; | |
65de872e | 468 | exception->retry = 0; |
272289a3 | 469 | |
50c80007 | 470 | stateid = nfs4_recoverable_stateid(exception->stateid); |
272289a3 | 471 | if (stateid == NULL && state != NULL) |
50c80007 | 472 | stateid = nfs4_recoverable_stateid(&state->stateid); |
272289a3 | 473 | |
65de872e TM |
474 | switch(errorcode) { |
475 | case 0: | |
476 | return 0; | |
cf61eb26 TM |
477 | case -NFS4ERR_BADHANDLE: |
478 | case -ESTALE: | |
479 | if (inode != NULL && S_ISREG(inode->i_mode)) | |
480 | pnfs_destroy_layout(NFS_I(inode)); | |
481 | break; | |
5ba12443 TM |
482 | case -NFS4ERR_DELEG_REVOKED: |
483 | case -NFS4ERR_ADMIN_REVOKED: | |
272289a3 | 484 | case -NFS4ERR_EXPIRED: |
5ba12443 | 485 | case -NFS4ERR_BAD_STATEID: |
fefa1a81 | 486 | case -NFS4ERR_PARTNER_NO_AUTH: |
272289a3 TM |
487 | if (inode != NULL && stateid != NULL) { |
488 | nfs_inode_find_state_and_recover(inode, | |
489 | stateid); | |
490 | goto wait_on_recovery; | |
491 | } | |
df561f66 | 492 | fallthrough; |
272289a3 | 493 | case -NFS4ERR_OPENMODE: |
8487c479 TM |
494 | if (inode) { |
495 | int err; | |
496 | ||
497 | err = nfs_async_inode_return_delegation(inode, | |
498 | stateid); | |
499 | if (err == 0) | |
500 | goto wait_on_recovery; | |
501 | if (stateid != NULL && stateid->type == NFS4_DELEGATION_STATEID_TYPE) { | |
502 | exception->retry = 1; | |
503 | break; | |
504 | } | |
505 | } | |
3114ea7a TM |
506 | if (state == NULL) |
507 | break; | |
5d422301 TM |
508 | ret = nfs4_schedule_stateid_recovery(server, state); |
509 | if (ret < 0) | |
510 | break; | |
3114ea7a | 511 | goto wait_on_recovery; |
65de872e | 512 | case -NFS4ERR_STALE_STATEID: |
a2c0b9e2 | 513 | case -NFS4ERR_STALE_CLIENTID: |
0400a6b0 TM |
514 | nfs4_schedule_lease_recovery(clp); |
515 | goto wait_on_recovery; | |
519ae255 CL |
516 | case -NFS4ERR_MOVED: |
517 | ret = nfs4_schedule_migration_recovery(server); | |
518 | if (ret < 0) | |
519 | break; | |
520 | goto wait_on_recovery; | |
8ef2f8d4 CL |
521 | case -NFS4ERR_LEASE_MOVED: |
522 | nfs4_schedule_lease_moved_recovery(clp); | |
523 | goto wait_on_recovery; | |
03391693 | 524 | #if defined(CONFIG_NFS_V4_1) |
4745e315 AA |
525 | case -NFS4ERR_BADSESSION: |
526 | case -NFS4ERR_BADSLOT: | |
527 | case -NFS4ERR_BAD_HIGH_SLOT: | |
528 | case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: | |
529 | case -NFS4ERR_DEADSESSION: | |
530 | case -NFS4ERR_SEQ_FALSE_RETRY: | |
531 | case -NFS4ERR_SEQ_MISORDERED: | |
5c441544 | 532 | /* Handled in nfs41_sequence_process() */ |
399f11c3 | 533 | goto wait_on_recovery; |
03391693 | 534 | #endif /* defined(CONFIG_NFS_V4_1) */ |
65de872e | 535 | case -NFS4ERR_FILE_OPEN: |
44ed3556 N |
536 | if (exception->timeout > HZ) { |
537 | /* We have retried a decent amount, time to | |
538 | * fail | |
539 | */ | |
540 | ret = -EBUSY; | |
541 | break; | |
542 | } | |
df561f66 | 543 | fallthrough; |
65de872e | 544 | case -NFS4ERR_DELAY: |
2598ed34 | 545 | nfs_inc_server_stats(server, NFSIOS_DELAY); |
df561f66 | 546 | fallthrough; |
2598ed34 | 547 | case -NFS4ERR_GRACE: |
e85d7ee4 | 548 | case -NFS4ERR_LAYOUTTRYLATER: |
183d9e7b | 549 | case -NFS4ERR_RECALLCONFLICT: |
b3c2aa07 TM |
550 | exception->delay = 1; |
551 | return 0; | |
552 | ||
a8a4ae3a | 553 | case -NFS4ERR_RETRY_UNCACHED_REP: |
65de872e TM |
554 | case -NFS4ERR_OLD_STATEID: |
555 | exception->retry = 1; | |
b064eca2 TM |
556 | break; |
557 | case -NFS4ERR_BADOWNER: | |
558 | /* The following works around a Linux server bug! */ | |
559 | case -NFS4ERR_BADNAME: | |
560 | if (server->caps & NFS_CAP_UIDGID_NOMAP) { | |
561 | server->caps &= ~NFS_CAP_UIDGID_NOMAP; | |
562 | exception->retry = 1; | |
563 | printk(KERN_WARNING "NFS: v4 server %s " | |
564 | "does not accept raw " | |
565 | "uid/gids. " | |
566 | "Reenabling the idmapper.\n", | |
567 | server->nfs_client->cl_hostname); | |
568 | } | |
65de872e TM |
569 | } |
570 | /* We failed to handle the error */ | |
571 | return nfs4_map_errors(ret); | |
0400a6b0 | 572 | wait_on_recovery: |
b3c2aa07 TM |
573 | exception->recovering = 1; |
574 | return 0; | |
575 | } | |
576 | ||
577 | /* This is the error handling routine for processes that are allowed | |
578 | * to sleep. | |
579 | */ | |
580 | int nfs4_handle_exception(struct nfs_server *server, int errorcode, struct nfs4_exception *exception) | |
581 | { | |
582 | struct nfs_client *clp = server->nfs_client; | |
583 | int ret; | |
584 | ||
585 | ret = nfs4_do_handle_exception(server, errorcode, exception); | |
586 | if (exception->delay) { | |
0688e64b TM |
587 | ret = nfs4_delay(&exception->timeout, |
588 | exception->interruptible); | |
b3c2aa07 TM |
589 | goto out_retry; |
590 | } | |
591 | if (exception->recovering) { | |
dfe1fe75 TM |
592 | if (exception->task_is_privileged) |
593 | return -EDEADLOCK; | |
b3c2aa07 TM |
594 | ret = nfs4_wait_clnt_recover(clp); |
595 | if (test_bit(NFS_MIG_FAILED, &server->mig_status)) | |
596 | return -EIO; | |
597 | goto out_retry; | |
598 | } | |
599 | return ret; | |
600 | out_retry: | |
a2c0b9e2 TM |
601 | if (ret == 0) |
602 | exception->retry = 1; | |
603 | return ret; | |
65de872e TM |
604 | } |
605 | ||
037fc980 TM |
606 | static int |
607 | nfs4_async_handle_exception(struct rpc_task *task, struct nfs_server *server, | |
608 | int errorcode, struct nfs4_exception *exception) | |
609 | { | |
610 | struct nfs_client *clp = server->nfs_client; | |
611 | int ret; | |
612 | ||
613 | ret = nfs4_do_handle_exception(server, errorcode, exception); | |
614 | if (exception->delay) { | |
615 | rpc_delay(task, nfs4_update_delay(&exception->timeout)); | |
616 | goto out_retry; | |
617 | } | |
618 | if (exception->recovering) { | |
dfe1fe75 TM |
619 | if (exception->task_is_privileged) |
620 | return -EDEADLOCK; | |
037fc980 TM |
621 | rpc_sleep_on(&clp->cl_rpcwaitq, task, NULL); |
622 | if (test_bit(NFS4CLNT_MANAGER_RUNNING, &clp->cl_state) == 0) | |
623 | rpc_wake_up_queued_task(&clp->cl_rpcwaitq, task); | |
624 | goto out_retry; | |
625 | } | |
519ae255 | 626 | if (test_bit(NFS_MIG_FAILED, &server->mig_status)) |
037fc980 TM |
627 | ret = -EIO; |
628 | return ret; | |
629 | out_retry: | |
0f90be13 | 630 | if (ret == 0) { |
a2c0b9e2 | 631 | exception->retry = 1; |
0f90be13 BB |
632 | /* |
633 | * For NFS4ERR_MOVED, the client transport will need to | |
634 | * be recomputed after migration recovery has completed. | |
635 | */ | |
636 | if (errorcode == -NFS4ERR_MOVED) | |
637 | rpc_task_release_transport(task); | |
638 | } | |
a2c0b9e2 | 639 | return ret; |
65de872e TM |
640 | } |
641 | ||
0f913a57 | 642 | int |
037fc980 TM |
643 | nfs4_async_handle_error(struct rpc_task *task, struct nfs_server *server, |
644 | struct nfs4_state *state, long *timeout) | |
645 | { | |
646 | struct nfs4_exception exception = { | |
647 | .state = state, | |
648 | }; | |
649 | ||
650 | if (task->tk_status >= 0) | |
651 | return 0; | |
652 | if (timeout) | |
653 | exception.timeout = *timeout; | |
654 | task->tk_status = nfs4_async_handle_exception(task, server, | |
655 | task->tk_status, | |
656 | &exception); | |
657 | if (exception.delay && timeout) | |
658 | *timeout = exception.timeout; | |
659 | if (exception.retry) | |
660 | return -EAGAIN; | |
661 | return 0; | |
662 | } | |
663 | ||
a5250def WAA |
664 | /* |
665 | * Return 'true' if 'clp' is using an rpc_client that is integrity protected | |
666 | * or 'false' otherwise. | |
667 | */ | |
668 | static bool _nfs4_is_integrity_protected(struct nfs_client *clp) | |
669 | { | |
670 | rpc_authflavor_t flavor = clp->cl_rpcclient->cl_auth->au_flavor; | |
eeea5361 | 671 | return (flavor == RPC_AUTH_GSS_KRB5I) || (flavor == RPC_AUTH_GSS_KRB5P); |
a5250def | 672 | } |
65de872e | 673 | |
452e9352 | 674 | static void do_renew_lease(struct nfs_client *clp, unsigned long timestamp) |
1da177e4 | 675 | { |
1da177e4 LT |
676 | spin_lock(&clp->cl_lock); |
677 | if (time_before(clp->cl_last_renewal,timestamp)) | |
678 | clp->cl_last_renewal = timestamp; | |
679 | spin_unlock(&clp->cl_lock); | |
680 | } | |
681 | ||
452e9352 TM |
682 | static void renew_lease(const struct nfs_server *server, unsigned long timestamp) |
683 | { | |
be824167 TM |
684 | struct nfs_client *clp = server->nfs_client; |
685 | ||
686 | if (!nfs4_has_session(clp)) | |
687 | do_renew_lease(clp, timestamp); | |
452e9352 TM |
688 | } |
689 | ||
2a3eb2b9 CL |
690 | struct nfs4_call_sync_data { |
691 | const struct nfs_server *seq_server; | |
692 | struct nfs4_sequence_args *seq_args; | |
693 | struct nfs4_sequence_res *seq_res; | |
694 | }; | |
695 | ||
be3a5d23 | 696 | void nfs4_init_sequence(struct nfs4_sequence_args *args, |
fba83f34 AS |
697 | struct nfs4_sequence_res *res, int cache_reply, |
698 | int privileged) | |
a9c92d6b CL |
699 | { |
700 | args->sa_slot = NULL; | |
701 | args->sa_cache_this = cache_reply; | |
fba83f34 | 702 | args->sa_privileged = privileged; |
a9c92d6b CL |
703 | |
704 | res->sr_slot = NULL; | |
705 | } | |
706 | ||
2e80dbe7 | 707 | static void nfs40_sequence_free_slot(struct nfs4_sequence_res *res) |
3bd2384a CL |
708 | { |
709 | struct nfs4_slot *slot = res->sr_slot; | |
710 | struct nfs4_slot_table *tbl; | |
711 | ||
3bd2384a CL |
712 | tbl = slot->table; |
713 | spin_lock(&tbl->slot_tbl_lock); | |
714 | if (!nfs41_wake_and_assign_slot(tbl, slot)) | |
715 | nfs4_free_slot(tbl, slot); | |
716 | spin_unlock(&tbl->slot_tbl_lock); | |
717 | ||
718 | res->sr_slot = NULL; | |
2e80dbe7 TM |
719 | } |
720 | ||
721 | static int nfs40_sequence_done(struct rpc_task *task, | |
722 | struct nfs4_sequence_res *res) | |
723 | { | |
724 | if (res->sr_slot != NULL) | |
725 | nfs40_sequence_free_slot(res); | |
3bd2384a CL |
726 | return 1; |
727 | } | |
728 | ||
cccef3b9 AA |
729 | #if defined(CONFIG_NFS_V4_1) |
730 | ||
3be0f80b | 731 | static void nfs41_release_slot(struct nfs4_slot *slot) |
13615871 | 732 | { |
e3725ec0 | 733 | struct nfs4_session *session; |
13615871 | 734 | struct nfs4_slot_table *tbl; |
c10e4498 | 735 | bool send_new_highest_used_slotid = false; |
13615871 | 736 | |
3be0f80b TM |
737 | if (!slot) |
738 | return; | |
a13ce7c6 | 739 | tbl = slot->table; |
e3725ec0 | 740 | session = tbl->session; |
ea028ac9 | 741 | |
07e8dcbd TM |
742 | /* Bump the slot sequence number */ |
743 | if (slot->seq_done) | |
744 | slot->seq_nr++; | |
745 | slot->seq_done = 0; | |
746 | ||
35dc1d74 | 747 | spin_lock(&tbl->slot_tbl_lock); |
c10e4498 TM |
748 | /* Be nice to the server: try to ensure that the last transmitted |
749 | * value for highest_user_slotid <= target_highest_slotid | |
750 | */ | |
751 | if (tbl->highest_used_slotid > tbl->target_highest_slotid) | |
752 | send_new_highest_used_slotid = true; | |
753 | ||
a13ce7c6 | 754 | if (nfs41_wake_and_assign_slot(tbl, slot)) { |
b75ad4cd TM |
755 | send_new_highest_used_slotid = false; |
756 | goto out_unlock; | |
757 | } | |
a13ce7c6 | 758 | nfs4_free_slot(tbl, slot); |
c10e4498 TM |
759 | |
760 | if (tbl->highest_used_slotid != NFS4_NO_SLOT) | |
761 | send_new_highest_used_slotid = false; | |
b75ad4cd | 762 | out_unlock: |
35dc1d74 | 763 | spin_unlock(&tbl->slot_tbl_lock); |
c10e4498 | 764 | if (send_new_highest_used_slotid) |
3f10a6af | 765 | nfs41_notify_server(session->clp); |
045d2a6d TM |
766 | if (waitqueue_active(&tbl->slot_waitq)) |
767 | wake_up_all(&tbl->slot_waitq); | |
13615871 AA |
768 | } |
769 | ||
3be0f80b TM |
770 | static void nfs41_sequence_free_slot(struct nfs4_sequence_res *res) |
771 | { | |
772 | nfs41_release_slot(res->sr_slot); | |
773 | res->sr_slot = NULL; | |
774 | } | |
775 | ||
3453d570 TM |
776 | static void nfs4_slot_sequence_record_sent(struct nfs4_slot *slot, |
777 | u32 seqnr) | |
778 | { | |
779 | if ((s32)(seqnr - slot->seq_nr_highest_sent) > 0) | |
780 | slot->seq_nr_highest_sent = seqnr; | |
781 | } | |
782 | static void nfs4_slot_sequence_acked(struct nfs4_slot *slot, | |
783 | u32 seqnr) | |
784 | { | |
785 | slot->seq_nr_highest_sent = seqnr; | |
786 | slot->seq_nr_last_acked = seqnr; | |
787 | } | |
788 | ||
913fadc5 AS |
789 | static void nfs4_probe_sequence(struct nfs_client *client, const struct cred *cred, |
790 | struct nfs4_slot *slot) | |
791 | { | |
792 | struct rpc_task *task = _nfs41_proc_sequence(client, cred, slot, true); | |
793 | if (!IS_ERR(task)) | |
794 | rpc_put_task_async(task); | |
795 | } | |
796 | ||
2e80dbe7 TM |
797 | static int nfs41_sequence_process(struct rpc_task *task, |
798 | struct nfs4_sequence_res *res) | |
b0df806c | 799 | { |
e3725ec0 | 800 | struct nfs4_session *session; |
a13ce7c6 | 801 | struct nfs4_slot *slot = res->sr_slot; |
14516c3a | 802 | struct nfs_client *clp; |
5c441544 | 803 | int status; |
85563073 | 804 | int ret = 1; |
b0df806c | 805 | |
a13ce7c6 TM |
806 | if (slot == NULL) |
807 | goto out_noaction; | |
468f8613 | 808 | /* don't increment the sequence number if the task wasn't sent */ |
c71c46f0 | 809 | if (!RPC_WAS_SENT(task) || slot->seq_done) |
b0df806c AA |
810 | goto out; |
811 | ||
e3725ec0 | 812 | session = slot->table->session; |
913fadc5 | 813 | clp = session->clp; |
933602e3 | 814 | |
2f92ae34 | 815 | trace_nfs4_sequence_done(session, res); |
5c441544 TM |
816 | |
817 | status = res->sr_status; | |
818 | if (task->tk_status == -NFS4ERR_DEADSESSION) | |
819 | status = -NFS4ERR_DEADSESSION; | |
820 | ||
691daf3b | 821 | /* Check the SEQUENCE operation status */ |
5c441544 | 822 | switch (status) { |
14516c3a | 823 | case 0: |
3453d570 TM |
824 | /* Mark this sequence number as having been acked */ |
825 | nfs4_slot_sequence_acked(slot, slot->seq_nr); | |
b0df806c | 826 | /* Update the slot's sequence and clientid lease timer */ |
07e8dcbd | 827 | slot->seq_done = 1; |
8e63b6a8 | 828 | do_renew_lease(clp, res->sr_timestamp); |
0629e370 | 829 | /* Check sequence flags */ |
0a014a44 TM |
830 | nfs41_handle_sequence_flag_errors(clp, res->sr_status_flags, |
831 | !!slot->privileged); | |
464ee9f9 | 832 | nfs41_update_target_slotid(slot->table, slot, res); |
14516c3a | 833 | break; |
ac20d163 TM |
834 | case 1: |
835 | /* | |
836 | * sr_status remains 1 if an RPC level error occurred. | |
837 | * The server may or may not have processed the sequence | |
838 | * operation.. | |
ac20d163 | 839 | */ |
3453d570 TM |
840 | nfs4_slot_sequence_record_sent(slot, slot->seq_nr); |
841 | slot->seq_done = 1; | |
ac20d163 | 842 | goto out; |
14516c3a TM |
843 | case -NFS4ERR_DELAY: |
844 | /* The server detected a resend of the RPC call and | |
845 | * returned NFS4ERR_DELAY as per Section 2.10.6.2 | |
846 | * of RFC5661. | |
847 | */ | |
df2fabff | 848 | dprintk("%s: slot=%u seq=%u: Operation in progress\n", |
dfb4f309 | 849 | __func__, |
df2fabff | 850 | slot->slot_nr, |
933602e3 | 851 | slot->seq_nr); |
3453d570 | 852 | nfs4_slot_sequence_acked(slot, slot->seq_nr); |
14516c3a | 853 | goto out_retry; |
f9312a54 TM |
854 | case -NFS4ERR_RETRY_UNCACHED_REP: |
855 | case -NFS4ERR_SEQ_FALSE_RETRY: | |
856 | /* | |
857 | * The server thinks we tried to replay a request. | |
858 | * Retry the call after bumping the sequence ID. | |
859 | */ | |
3453d570 | 860 | nfs4_slot_sequence_acked(slot, slot->seq_nr); |
f9312a54 | 861 | goto retry_new_seq; |
85563073 TM |
862 | case -NFS4ERR_BADSLOT: |
863 | /* | |
864 | * The slot id we used was probably retired. Try again | |
865 | * using a different slot id. | |
866 | */ | |
99589100 | 867 | if (slot->slot_nr < slot->table->target_highest_slotid) |
3be0f80b | 868 | goto session_recover; |
e8794440 TM |
869 | goto retry_nowait; |
870 | case -NFS4ERR_SEQ_MISORDERED: | |
3453d570 | 871 | nfs4_slot_sequence_record_sent(slot, slot->seq_nr); |
ac20d163 | 872 | /* |
3453d570 TM |
873 | * Were one or more calls using this slot interrupted? |
874 | * If the server never received the request, then our | |
913fadc5 AS |
875 | * transmitted slot sequence number may be too high. However, |
876 | * if the server did receive the request then it might | |
877 | * accidentally give us a reply with a mismatched operation. | |
878 | * We can sort this out by sending a lone sequence operation | |
879 | * to the server on the same slot. | |
e8794440 | 880 | */ |
3453d570 TM |
881 | if ((s32)(slot->seq_nr - slot->seq_nr_last_acked) > 1) { |
882 | slot->seq_nr--; | |
913fadc5 AS |
883 | if (task->tk_msg.rpc_proc != &nfs4_procedures[NFSPROC4_CLNT_SEQUENCE]) { |
884 | nfs4_probe_sequence(clp, task->tk_msg.rpc_cred, slot); | |
885 | res->sr_slot = NULL; | |
886 | } | |
8e63b6a8 TM |
887 | goto retry_nowait; |
888 | } | |
3453d570 TM |
889 | /* |
890 | * RFC5661: | |
891 | * A retry might be sent while the original request is | |
892 | * still in progress on the replier. The replier SHOULD | |
893 | * deal with the issue by returning NFS4ERR_DELAY as the | |
894 | * reply to SEQUENCE or CB_SEQUENCE operation, but | |
895 | * implementations MAY return NFS4ERR_SEQ_MISORDERED. | |
896 | * | |
897 | * Restart the search after a delay. | |
898 | */ | |
899 | slot->seq_nr = slot->seq_nr_highest_sent; | |
900 | goto out_retry; | |
5c441544 TM |
901 | case -NFS4ERR_BADSESSION: |
902 | case -NFS4ERR_DEADSESSION: | |
903 | case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: | |
904 | goto session_recover; | |
14516c3a TM |
905 | default: |
906 | /* Just update the slot sequence no. */ | |
07e8dcbd | 907 | slot->seq_done = 1; |
b0df806c AA |
908 | } |
909 | out: | |
910 | /* The session may be reset by one of the error handlers. */ | |
911 | dprintk("%s: Error %d free the slot \n", __func__, res->sr_status); | |
a13ce7c6 | 912 | out_noaction: |
85563073 | 913 | return ret; |
3be0f80b | 914 | session_recover: |
5c441544 TM |
915 | nfs4_schedule_session_recovery(session, status); |
916 | dprintk("%s ERROR: %d Reset session\n", __func__, status); | |
917 | nfs41_sequence_free_slot(res); | |
918 | goto out; | |
3be0f80b TM |
919 | retry_new_seq: |
920 | ++slot->seq_nr; | |
e8794440 TM |
921 | retry_nowait: |
922 | if (rpc_restart_call_prepare(task)) { | |
2e80dbe7 | 923 | nfs41_sequence_free_slot(res); |
e8794440 TM |
924 | task->tk_status = 0; |
925 | ret = 0; | |
926 | } | |
927 | goto out; | |
14516c3a | 928 | out_retry: |
d05dd4e9 | 929 | if (!rpc_restart_call(task)) |
14516c3a TM |
930 | goto out; |
931 | rpc_delay(task, NFS4_POLL_RETRY_MAX); | |
932 | return 0; | |
b0df806c | 933 | } |
2e80dbe7 TM |
934 | |
935 | int nfs41_sequence_done(struct rpc_task *task, struct nfs4_sequence_res *res) | |
936 | { | |
937 | if (!nfs41_sequence_process(task, res)) | |
938 | return 0; | |
939 | if (res->sr_slot != NULL) | |
940 | nfs41_sequence_free_slot(res); | |
941 | return 1; | |
942 | ||
943 | } | |
f9c96fcc | 944 | EXPORT_SYMBOL_GPL(nfs41_sequence_done); |
b0df806c | 945 | |
2e80dbe7 TM |
946 | static int nfs4_sequence_process(struct rpc_task *task, struct nfs4_sequence_res *res) |
947 | { | |
948 | if (res->sr_slot == NULL) | |
949 | return 1; | |
950 | if (res->sr_slot->table->session != NULL) | |
951 | return nfs41_sequence_process(task, res); | |
952 | return nfs40_sequence_done(task, res); | |
953 | } | |
954 | ||
955 | static void nfs4_sequence_free_slot(struct nfs4_sequence_res *res) | |
956 | { | |
957 | if (res->sr_slot != NULL) { | |
958 | if (res->sr_slot->table->session != NULL) | |
959 | nfs41_sequence_free_slot(res); | |
960 | else | |
961 | nfs40_sequence_free_slot(res); | |
962 | } | |
963 | } | |
964 | ||
2c4b131d | 965 | int nfs4_sequence_done(struct rpc_task *task, struct nfs4_sequence_res *res) |
df896455 | 966 | { |
e3725ec0 | 967 | if (res->sr_slot == NULL) |
14516c3a | 968 | return 1; |
3bd2384a CL |
969 | if (!res->sr_slot->table->session) |
970 | return nfs40_sequence_done(task, res); | |
14516c3a | 971 | return nfs41_sequence_done(task, res); |
df896455 | 972 | } |
2c4b131d | 973 | EXPORT_SYMBOL_GPL(nfs4_sequence_done); |
df896455 | 974 | |
ce5039c1 AA |
975 | static void nfs41_call_sync_prepare(struct rpc_task *task, void *calldata) |
976 | { | |
2a3eb2b9 | 977 | struct nfs4_call_sync_data *data = calldata; |
ce5039c1 | 978 | |
035168ab TM |
979 | dprintk("--> %s data->seq_server %p\n", __func__, data->seq_server); |
980 | ||
7981c8a6 AS |
981 | nfs4_setup_sequence(data->seq_server->nfs_client, |
982 | data->seq_args, data->seq_res, task); | |
ce5039c1 AA |
983 | } |
984 | ||
69ab40c4 AA |
985 | static void nfs41_call_sync_done(struct rpc_task *task, void *calldata) |
986 | { | |
2a3eb2b9 | 987 | struct nfs4_call_sync_data *data = calldata; |
69ab40c4 | 988 | |
14516c3a | 989 | nfs41_sequence_done(task, data->seq_res); |
69ab40c4 AA |
990 | } |
991 | ||
17280175 | 992 | static const struct rpc_call_ops nfs41_call_sync_ops = { |
ce5039c1 | 993 | .rpc_call_prepare = nfs41_call_sync_prepare, |
69ab40c4 | 994 | .rpc_call_done = nfs41_call_sync_done, |
ce5039c1 AA |
995 | }; |
996 | ||
3bd2384a CL |
997 | #else /* !CONFIG_NFS_V4_1 */ |
998 | ||
2e80dbe7 TM |
999 | static int nfs4_sequence_process(struct rpc_task *task, struct nfs4_sequence_res *res) |
1000 | { | |
1001 | return nfs40_sequence_done(task, res); | |
1002 | } | |
1003 | ||
1004 | static void nfs4_sequence_free_slot(struct nfs4_sequence_res *res) | |
1005 | { | |
1006 | if (res->sr_slot != NULL) | |
1007 | nfs40_sequence_free_slot(res); | |
1008 | } | |
1009 | ||
2c4b131d PT |
1010 | int nfs4_sequence_done(struct rpc_task *task, |
1011 | struct nfs4_sequence_res *res) | |
9915ea7e | 1012 | { |
3bd2384a | 1013 | return nfs40_sequence_done(task, res); |
9915ea7e | 1014 | } |
2c4b131d | 1015 | EXPORT_SYMBOL_GPL(nfs4_sequence_done); |
3bd2384a CL |
1016 | |
1017 | #endif /* !CONFIG_NFS_V4_1 */ | |
9915ea7e | 1018 | |
c1dffe0b TM |
1019 | static void nfs41_sequence_res_init(struct nfs4_sequence_res *res) |
1020 | { | |
1021 | res->sr_timestamp = jiffies; | |
1022 | res->sr_status_flags = 0; | |
1023 | res->sr_status = 1; | |
1024 | } | |
1025 | ||
3be0f80b TM |
1026 | static |
1027 | void nfs4_sequence_attach_slot(struct nfs4_sequence_args *args, | |
1028 | struct nfs4_sequence_res *res, | |
1029 | struct nfs4_slot *slot) | |
1030 | { | |
1031 | if (!slot) | |
1032 | return; | |
1033 | slot->privileged = args->sa_privileged ? 1 : 0; | |
1034 | args->sa_slot = slot; | |
1035 | ||
1036 | res->sr_slot = slot; | |
3be0f80b TM |
1037 | } |
1038 | ||
1039 | int nfs4_setup_sequence(struct nfs_client *client, | |
7981c8a6 AS |
1040 | struct nfs4_sequence_args *args, |
1041 | struct nfs4_sequence_res *res, | |
1042 | struct rpc_task *task) | |
1043 | { | |
7981c8a6 | 1044 | struct nfs4_session *session = nfs4_get_session(client); |
76ee0354 | 1045 | struct nfs4_slot_table *tbl = client->cl_slot_tbl; |
3d35808b | 1046 | struct nfs4_slot *slot; |
7981c8a6 | 1047 | |
9dd9107f AS |
1048 | /* slot already allocated? */ |
1049 | if (res->sr_slot != NULL) | |
1050 | goto out_start; | |
1051 | ||
6b2e6856 | 1052 | if (session) |
76ee0354 | 1053 | tbl = &session->fc_slot_table; |
76ee0354 | 1054 | |
3453d570 TM |
1055 | spin_lock(&tbl->slot_tbl_lock); |
1056 | /* The state manager will wait until the slot table is empty */ | |
1057 | if (nfs4_slot_tbl_draining(tbl) && !args->sa_privileged) | |
1058 | goto out_sleep; | |
1059 | ||
1060 | slot = nfs4_alloc_slot(tbl); | |
1061 | if (IS_ERR(slot)) { | |
3453d570 | 1062 | if (slot == ERR_PTR(-ENOMEM)) |
6b2e6856 | 1063 | goto out_sleep_timeout; |
3453d570 | 1064 | goto out_sleep; |
3d35808b | 1065 | } |
3453d570 | 1066 | spin_unlock(&tbl->slot_tbl_lock); |
3d35808b | 1067 | |
3be0f80b | 1068 | nfs4_sequence_attach_slot(args, res, slot); |
3d35808b | 1069 | |
ad05cc0f | 1070 | trace_nfs4_setup_sequence(session, args); |
9dd9107f | 1071 | out_start: |
c1dffe0b | 1072 | nfs41_sequence_res_init(res); |
9dd9107f AS |
1073 | rpc_call_start(task); |
1074 | return 0; | |
6b2e6856 TM |
1075 | out_sleep_timeout: |
1076 | /* Try again in 1/4 second */ | |
1077 | if (args->sa_privileged) | |
1078 | rpc_sleep_on_priority_timeout(&tbl->slot_tbl_waitq, task, | |
1079 | jiffies + (HZ >> 2), RPC_PRIORITY_PRIVILEGED); | |
1080 | else | |
1081 | rpc_sleep_on_timeout(&tbl->slot_tbl_waitq, task, | |
1082 | NULL, jiffies + (HZ >> 2)); | |
1083 | spin_unlock(&tbl->slot_tbl_lock); | |
1084 | return -EAGAIN; | |
0dcee8bb AS |
1085 | out_sleep: |
1086 | if (args->sa_privileged) | |
1087 | rpc_sleep_on_priority(&tbl->slot_tbl_waitq, task, | |
8357a9b6 | 1088 | RPC_PRIORITY_PRIVILEGED); |
0dcee8bb AS |
1089 | else |
1090 | rpc_sleep_on(&tbl->slot_tbl_waitq, task, NULL); | |
1091 | spin_unlock(&tbl->slot_tbl_lock); | |
1092 | return -EAGAIN; | |
7981c8a6 AS |
1093 | } |
1094 | EXPORT_SYMBOL_GPL(nfs4_setup_sequence); | |
1095 | ||
9915ea7e CL |
1096 | static void nfs40_call_sync_prepare(struct rpc_task *task, void *calldata) |
1097 | { | |
1098 | struct nfs4_call_sync_data *data = calldata; | |
42e1cca7 | 1099 | nfs4_setup_sequence(data->seq_server->nfs_client, |
9915ea7e CL |
1100 | data->seq_args, data->seq_res, task); |
1101 | } | |
1102 | ||
1103 | static void nfs40_call_sync_done(struct rpc_task *task, void *calldata) | |
1104 | { | |
1105 | struct nfs4_call_sync_data *data = calldata; | |
1106 | nfs4_sequence_done(task, data->seq_res); | |
1107 | } | |
1108 | ||
1109 | static const struct rpc_call_ops nfs40_call_sync_ops = { | |
1110 | .rpc_call_prepare = nfs40_call_sync_prepare, | |
1111 | .rpc_call_done = nfs40_call_sync_done, | |
1112 | }; | |
1113 | ||
48c05854 AS |
1114 | static int nfs4_call_sync_custom(struct rpc_task_setup *task_setup) |
1115 | { | |
1116 | int ret; | |
1117 | struct rpc_task *task; | |
1118 | ||
1119 | task = rpc_run_task(task_setup); | |
1120 | if (IS_ERR(task)) | |
1121 | return PTR_ERR(task); | |
1122 | ||
1123 | ret = task->tk_status; | |
1124 | rpc_put_task(task); | |
1125 | return ret; | |
1126 | } | |
1127 | ||
c74dfe97 TM |
1128 | static int nfs4_do_call_sync(struct rpc_clnt *clnt, |
1129 | struct nfs_server *server, | |
1130 | struct rpc_message *msg, | |
1131 | struct nfs4_sequence_args *args, | |
1132 | struct nfs4_sequence_res *res, | |
1133 | unsigned short task_flags) | |
ce5039c1 | 1134 | { |
9915ea7e | 1135 | struct nfs_client *clp = server->nfs_client; |
2a3eb2b9 | 1136 | struct nfs4_call_sync_data data = { |
035168ab | 1137 | .seq_server = server, |
ce5039c1 AA |
1138 | .seq_args = args, |
1139 | .seq_res = res, | |
ce5039c1 AA |
1140 | }; |
1141 | struct rpc_task_setup task_setup = { | |
7c513058 | 1142 | .rpc_client = clnt, |
ce5039c1 | 1143 | .rpc_message = msg, |
9915ea7e | 1144 | .callback_ops = clp->cl_mvops->call_sync_ops, |
c74dfe97 TM |
1145 | .callback_data = &data, |
1146 | .flags = task_flags, | |
ce5039c1 AA |
1147 | }; |
1148 | ||
48c05854 | 1149 | return nfs4_call_sync_custom(&task_setup); |
ce5039c1 AA |
1150 | } |
1151 | ||
c74dfe97 TM |
1152 | static int nfs4_call_sync_sequence(struct rpc_clnt *clnt, |
1153 | struct nfs_server *server, | |
1154 | struct rpc_message *msg, | |
1155 | struct nfs4_sequence_args *args, | |
1156 | struct nfs4_sequence_res *res) | |
1157 | { | |
1158 | return nfs4_do_call_sync(clnt, server, msg, args, res, 0); | |
1159 | } | |
1160 | ||
1161 | ||
7c513058 BS |
1162 | int nfs4_call_sync(struct rpc_clnt *clnt, |
1163 | struct nfs_server *server, | |
e73b83f2 BS |
1164 | struct rpc_message *msg, |
1165 | struct nfs4_sequence_args *args, | |
1166 | struct nfs4_sequence_res *res, | |
1167 | int cache_reply) | |
1168 | { | |
fba83f34 | 1169 | nfs4_init_sequence(args, res, cache_reply, 0); |
9915ea7e | 1170 | return nfs4_call_sync_sequence(clnt, server, msg, args, res); |
e73b83f2 | 1171 | } |
cccef3b9 | 1172 | |
3c591175 TM |
1173 | static void |
1174 | nfs4_inc_nlink_locked(struct inode *inode) | |
1175 | { | |
82eae5a4 TM |
1176 | nfs_set_cache_invalid(inode, NFS_INO_INVALID_CHANGE | |
1177 | NFS_INO_INVALID_CTIME | | |
1178 | NFS_INO_INVALID_NLINK); | |
3c591175 TM |
1179 | inc_nlink(inode); |
1180 | } | |
1181 | ||
1301e421 TM |
1182 | static void |
1183 | nfs4_inc_nlink(struct inode *inode) | |
1184 | { | |
1185 | spin_lock(&inode->i_lock); | |
1186 | nfs4_inc_nlink_locked(inode); | |
1187 | spin_unlock(&inode->i_lock); | |
1188 | } | |
1189 | ||
3c591175 TM |
1190 | static void |
1191 | nfs4_dec_nlink_locked(struct inode *inode) | |
1192 | { | |
82eae5a4 TM |
1193 | nfs_set_cache_invalid(inode, NFS_INO_INVALID_CHANGE | |
1194 | NFS_INO_INVALID_CTIME | | |
1195 | NFS_INO_INVALID_NLINK); | |
3c591175 TM |
1196 | drop_nlink(inode); |
1197 | } | |
1198 | ||
1199 | static void | |
1b523ca9 FL |
1200 | nfs4_update_changeattr_locked(struct inode *inode, |
1201 | struct nfs4_change_info *cinfo, | |
5636ec4e | 1202 | unsigned long timestamp, unsigned long cache_validity) |
1da177e4 | 1203 | { |
1b523ca9 | 1204 | struct nfs_inode *nfsi = NFS_I(inode); |
6f9be83d | 1205 | u64 change_attr = inode_peek_iversion_raw(inode); |
1da177e4 | 1206 | |
b6f80a2e | 1207 | cache_validity |= NFS_INO_INVALID_CTIME | NFS_INO_INVALID_MTIME; |
1b523ca9 | 1208 | |
6f9be83d TM |
1209 | switch (NFS_SERVER(inode)->change_attr_type) { |
1210 | case NFS4_CHANGE_TYPE_IS_UNDEFINED: | |
1211 | break; | |
1212 | case NFS4_CHANGE_TYPE_IS_TIME_METADATA: | |
1213 | if ((s64)(change_attr - cinfo->after) > 0) | |
1214 | goto out; | |
1215 | break; | |
1216 | default: | |
1217 | if ((s64)(change_attr - cinfo->after) >= 0) | |
1218 | goto out; | |
1219 | } | |
1220 | ||
1221 | if (cinfo->atomic && cinfo->before == change_attr) { | |
e603a4c1 TM |
1222 | nfsi->attrtimeo_timestamp = jiffies; |
1223 | } else { | |
1b523ca9 | 1224 | if (S_ISDIR(inode->i_mode)) { |
b6f80a2e | 1225 | cache_validity |= NFS_INO_INVALID_DATA; |
1b523ca9 FL |
1226 | nfs_force_lookup_revalidate(inode); |
1227 | } else { | |
1228 | if (!NFS_PROTO(inode)->have_delegation(inode, | |
1229 | FMODE_READ)) | |
b6f80a2e | 1230 | cache_validity |= NFS_INO_REVAL_PAGECACHE; |
1b523ca9 FL |
1231 | } |
1232 | ||
6f9be83d | 1233 | if (cinfo->before != change_attr) |
b6f80a2e TM |
1234 | cache_validity |= NFS_INO_INVALID_ACCESS | |
1235 | NFS_INO_INVALID_ACL | | |
1236 | NFS_INO_INVALID_XATTR; | |
e603a4c1 | 1237 | } |
1b523ca9 | 1238 | inode_set_iversion_raw(inode, cinfo->after); |
d3129ef6 | 1239 | nfsi->read_cache_jiffies = timestamp; |
3235b403 | 1240 | nfsi->attr_gencount = nfs_inc_attr_generation_counter(); |
c8d07159 | 1241 | nfsi->cache_validity &= ~NFS_INO_INVALID_CHANGE; |
6f9be83d TM |
1242 | out: |
1243 | nfs_set_cache_invalid(inode, cache_validity); | |
3c591175 TM |
1244 | } |
1245 | ||
1b523ca9 FL |
1246 | void |
1247 | nfs4_update_changeattr(struct inode *dir, struct nfs4_change_info *cinfo, | |
5636ec4e | 1248 | unsigned long timestamp, unsigned long cache_validity) |
3c591175 TM |
1249 | { |
1250 | spin_lock(&dir->i_lock); | |
1b523ca9 | 1251 | nfs4_update_changeattr_locked(dir, cinfo, timestamp, cache_validity); |
38478b24 | 1252 | spin_unlock(&dir->i_lock); |
1da177e4 LT |
1253 | } |
1254 | ||
8fd1ab74 TM |
1255 | struct nfs4_open_createattrs { |
1256 | struct nfs4_label *label; | |
1257 | struct iattr *sattr; | |
1258 | const __u32 verf[2]; | |
1259 | }; | |
1260 | ||
49f9a0fa TM |
1261 | static bool nfs4_clear_cap_atomic_open_v1(struct nfs_server *server, |
1262 | int err, struct nfs4_exception *exception) | |
1263 | { | |
1264 | if (err != -EINVAL) | |
1265 | return false; | |
1266 | if (!(server->caps & NFS_CAP_ATOMIC_OPEN_V1)) | |
1267 | return false; | |
1268 | server->caps &= ~NFS_CAP_ATOMIC_OPEN_V1; | |
1269 | exception->retry = 1; | |
1270 | return true; | |
1271 | } | |
1272 | ||
1bf85d8c TM |
1273 | static fmode_t _nfs4_ctx_to_accessmode(const struct nfs_open_context *ctx) |
1274 | { | |
1275 | return ctx->mode & (FMODE_READ|FMODE_WRITE|FMODE_EXEC); | |
1276 | } | |
1277 | ||
1278 | static fmode_t _nfs4_ctx_to_openmode(const struct nfs_open_context *ctx) | |
1279 | { | |
1280 | fmode_t ret = ctx->mode & (FMODE_READ|FMODE_WRITE); | |
1281 | ||
1282 | return (ctx->mode & FMODE_EXEC) ? FMODE_READ | ret : ret; | |
1283 | } | |
1284 | ||
6ae37339 TM |
1285 | static u32 |
1286 | nfs4_map_atomic_open_share(struct nfs_server *server, | |
1287 | fmode_t fmode, int openflags) | |
1288 | { | |
1289 | u32 res = 0; | |
1290 | ||
1291 | switch (fmode & (FMODE_READ | FMODE_WRITE)) { | |
1292 | case FMODE_READ: | |
1293 | res = NFS4_SHARE_ACCESS_READ; | |
1294 | break; | |
1295 | case FMODE_WRITE: | |
1296 | res = NFS4_SHARE_ACCESS_WRITE; | |
1297 | break; | |
1298 | case FMODE_READ|FMODE_WRITE: | |
1299 | res = NFS4_SHARE_ACCESS_BOTH; | |
1300 | } | |
1301 | if (!(server->caps & NFS_CAP_ATOMIC_OPEN_V1)) | |
1302 | goto out; | |
1303 | /* Want no delegation if we're using O_DIRECT */ | |
1304 | if (openflags & O_DIRECT) | |
1305 | res |= NFS4_SHARE_WANT_NO_DELEG; | |
1306 | out: | |
1307 | return res; | |
1308 | } | |
1309 | ||
49f9a0fa TM |
1310 | static enum open_claim_type4 |
1311 | nfs4_map_atomic_open_claim(struct nfs_server *server, | |
1312 | enum open_claim_type4 claim) | |
1313 | { | |
1314 | if (server->caps & NFS_CAP_ATOMIC_OPEN_V1) | |
1315 | return claim; | |
1316 | switch (claim) { | |
1317 | default: | |
1318 | return claim; | |
1319 | case NFS4_OPEN_CLAIM_FH: | |
1320 | return NFS4_OPEN_CLAIM_NULL; | |
1321 | case NFS4_OPEN_CLAIM_DELEG_CUR_FH: | |
1322 | return NFS4_OPEN_CLAIM_DELEGATE_CUR; | |
1323 | case NFS4_OPEN_CLAIM_DELEG_PREV_FH: | |
1324 | return NFS4_OPEN_CLAIM_DELEGATE_PREV; | |
1325 | } | |
1326 | } | |
2ced46c2 TM |
1327 | |
1328 | static void nfs4_init_opendata_res(struct nfs4_opendata *p) | |
1329 | { | |
1330 | p->o_res.f_attr = &p->f_attr; | |
1775fd3e | 1331 | p->o_res.f_label = p->f_label; |
c1d51931 TM |
1332 | p->o_res.seqid = p->o_arg.seqid; |
1333 | p->c_res.seqid = p->c_arg.seqid; | |
2ced46c2 | 1334 | p->o_res.server = p->o_arg.server; |
5f657530 | 1335 | p->o_res.access_request = p->o_arg.access; |
2ced46c2 | 1336 | nfs_fattr_init(&p->f_attr); |
6926afd1 | 1337 | nfs_fattr_init_names(&p->f_attr, &p->owner_name, &p->group_name); |
2ced46c2 TM |
1338 | } |
1339 | ||
82a2c1b7 | 1340 | static struct nfs4_opendata *nfs4_opendata_alloc(struct dentry *dentry, |
dc0b027d | 1341 | struct nfs4_state_owner *sp, fmode_t fmode, int flags, |
8fd1ab74 | 1342 | const struct nfs4_open_createattrs *c, |
4a1c0893 | 1343 | enum open_claim_type4 claim, |
8535b2be | 1344 | gfp_t gfp_mask) |
e56e0b78 | 1345 | { |
82a2c1b7 | 1346 | struct dentry *parent = dget_parent(dentry); |
2b0143b5 | 1347 | struct inode *dir = d_inode(parent); |
e56e0b78 | 1348 | struct nfs_server *server = NFS_SERVER(dir); |
63f5f796 | 1349 | struct nfs_seqid *(*alloc_seqid)(struct nfs_seqid_counter *, gfp_t); |
8fd1ab74 | 1350 | struct nfs4_label *label = (c != NULL) ? c->label : NULL; |
e56e0b78 TM |
1351 | struct nfs4_opendata *p; |
1352 | ||
8535b2be | 1353 | p = kzalloc(sizeof(*p), gfp_mask); |
e56e0b78 TM |
1354 | if (p == NULL) |
1355 | goto err; | |
14c43f76 DQ |
1356 | |
1357 | p->f_label = nfs4_label_alloc(server, gfp_mask); | |
1358 | if (IS_ERR(p->f_label)) | |
1359 | goto err_free_p; | |
1360 | ||
a49c2691 KM |
1361 | p->a_label = nfs4_label_alloc(server, gfp_mask); |
1362 | if (IS_ERR(p->a_label)) | |
1363 | goto err_free_f; | |
1364 | ||
63f5f796 TM |
1365 | alloc_seqid = server->nfs_client->cl_mvops->alloc_seqid; |
1366 | p->o_arg.seqid = alloc_seqid(&sp->so_seqid, gfp_mask); | |
badc76dd | 1367 | if (IS_ERR(p->o_arg.seqid)) |
14c43f76 | 1368 | goto err_free_label; |
82a2c1b7 AV |
1369 | nfs_sb_active(dentry->d_sb); |
1370 | p->dentry = dget(dentry); | |
e56e0b78 TM |
1371 | p->dir = parent; |
1372 | p->owner = sp; | |
1373 | atomic_inc(&sp->so_count); | |
dc0b027d TM |
1374 | p->o_arg.open_flags = flags; |
1375 | p->o_arg.fmode = fmode & (FMODE_READ|FMODE_WRITE); | |
536585cc | 1376 | p->o_arg.claim = nfs4_map_atomic_open_claim(server, claim); |
6ae37339 TM |
1377 | p->o_arg.share_access = nfs4_map_atomic_open_share(server, |
1378 | fmode, flags); | |
90910519 BC |
1379 | if (flags & O_CREAT) { |
1380 | p->o_arg.umask = current_umask(); | |
1381 | p->o_arg.label = nfs4_label_copy(p->a_label, label); | |
1382 | if (c->sattr != NULL && c->sattr->ia_valid != 0) { | |
1383 | p->o_arg.u.attrs = &p->attrs; | |
1384 | memcpy(&p->attrs, c->sattr, sizeof(p->attrs)); | |
1385 | ||
1386 | memcpy(p->o_arg.u.verifier.data, c->verf, | |
1387 | sizeof(p->o_arg.u.verifier.data)); | |
1388 | } | |
1389 | } | |
ae2bb032 WAA |
1390 | /* don't put an ACCESS op in OPEN compound if O_EXCL, because ACCESS |
1391 | * will return permission denied for all bits until close */ | |
1392 | if (!(flags & O_EXCL)) { | |
1393 | /* ask server to check for all possible rights as results | |
1394 | * are cached */ | |
536585cc TM |
1395 | switch (p->o_arg.claim) { |
1396 | default: | |
1397 | break; | |
1398 | case NFS4_OPEN_CLAIM_NULL: | |
1399 | case NFS4_OPEN_CLAIM_FH: | |
1400 | p->o_arg.access = NFS4_ACCESS_READ | | |
1401 | NFS4_ACCESS_MODIFY | | |
1402 | NFS4_ACCESS_EXTEND | | |
1403 | NFS4_ACCESS_EXECUTE; | |
72832a24 FL |
1404 | #ifdef CONFIG_NFS_V4_2 |
1405 | if (server->caps & NFS_CAP_XATTR) | |
1406 | p->o_arg.access |= NFS4_ACCESS_XAREAD | | |
1407 | NFS4_ACCESS_XAWRITE | | |
1408 | NFS4_ACCESS_XALIST; | |
1409 | #endif | |
536585cc | 1410 | } |
ae2bb032 | 1411 | } |
7539bbab | 1412 | p->o_arg.clientid = server->nfs_client->cl_clientid; |
95b72eb0 TM |
1413 | p->o_arg.id.create_time = ktime_to_ns(sp->so_seqid.create_time); |
1414 | p->o_arg.id.uniquifier = sp->so_seqid.owner_id; | |
82a2c1b7 | 1415 | p->o_arg.name = &dentry->d_name; |
e56e0b78 | 1416 | p->o_arg.server = server; |
aa9c2669 | 1417 | p->o_arg.bitmask = nfs4_bitmask(server, label); |
1549210f | 1418 | p->o_arg.open_bitmap = &nfs4_fattr_bitmap[0]; |
49f9a0fa | 1419 | switch (p->o_arg.claim) { |
4a1c0893 TM |
1420 | case NFS4_OPEN_CLAIM_NULL: |
1421 | case NFS4_OPEN_CLAIM_DELEGATE_CUR: | |
1422 | case NFS4_OPEN_CLAIM_DELEGATE_PREV: | |
1423 | p->o_arg.fh = NFS_FH(dir); | |
1424 | break; | |
1425 | case NFS4_OPEN_CLAIM_PREVIOUS: | |
1426 | case NFS4_OPEN_CLAIM_FH: | |
1427 | case NFS4_OPEN_CLAIM_DELEG_CUR_FH: | |
1428 | case NFS4_OPEN_CLAIM_DELEG_PREV_FH: | |
2b0143b5 | 1429 | p->o_arg.fh = NFS_FH(d_inode(dentry)); |
4a1c0893 | 1430 | } |
cdd4e68b TM |
1431 | p->c_arg.fh = &p->o_res.fh; |
1432 | p->c_arg.stateid = &p->o_res.stateid; | |
1433 | p->c_arg.seqid = p->o_arg.seqid; | |
2ced46c2 | 1434 | nfs4_init_opendata_res(p); |
c6d00e63 | 1435 | kref_init(&p->kref); |
e56e0b78 | 1436 | return p; |
14c43f76 DQ |
1437 | |
1438 | err_free_label: | |
a49c2691 KM |
1439 | nfs4_label_free(p->a_label); |
1440 | err_free_f: | |
14c43f76 DQ |
1441 | nfs4_label_free(p->f_label); |
1442 | err_free_p: | |
e56e0b78 TM |
1443 | kfree(p); |
1444 | err: | |
1445 | dput(parent); | |
1446 | return NULL; | |
1447 | } | |
1448 | ||
c6d00e63 | 1449 | static void nfs4_opendata_free(struct kref *kref) |
e56e0b78 | 1450 | { |
c6d00e63 TM |
1451 | struct nfs4_opendata *p = container_of(kref, |
1452 | struct nfs4_opendata, kref); | |
82a2c1b7 | 1453 | struct super_block *sb = p->dentry->d_sb; |
c6d00e63 | 1454 | |
30ae2412 | 1455 | nfs4_lgopen_release(p->lgp); |
c6d00e63 | 1456 | nfs_free_seqid(p->o_arg.seqid); |
2e80dbe7 | 1457 | nfs4_sequence_free_slot(&p->o_res.seq_res); |
aac00a8d TM |
1458 | if (p->state != NULL) |
1459 | nfs4_put_open_state(p->state); | |
c6d00e63 | 1460 | nfs4_put_state_owner(p->owner); |
14c43f76 | 1461 | |
a49c2691 | 1462 | nfs4_label_free(p->a_label); |
14c43f76 DQ |
1463 | nfs4_label_free(p->f_label); |
1464 | ||
c6d00e63 | 1465 | dput(p->dir); |
82a2c1b7 AV |
1466 | dput(p->dentry); |
1467 | nfs_sb_deactive(sb); | |
6926afd1 | 1468 | nfs_fattr_free_names(&p->f_attr); |
e911b815 | 1469 | kfree(p->f_attr.mdsthreshold); |
c6d00e63 TM |
1470 | kfree(p); |
1471 | } | |
1472 | ||
1473 | static void nfs4_opendata_put(struct nfs4_opendata *p) | |
1474 | { | |
1475 | if (p != NULL) | |
1476 | kref_put(&p->kref, nfs4_opendata_free); | |
e56e0b78 TM |
1477 | } |
1478 | ||
24311f88 TM |
1479 | static bool nfs4_mode_match_open_stateid(struct nfs4_state *state, |
1480 | fmode_t fmode) | |
1481 | { | |
1482 | switch(fmode & (FMODE_READ|FMODE_WRITE)) { | |
1483 | case FMODE_READ|FMODE_WRITE: | |
1484 | return state->n_rdwr != 0; | |
1485 | case FMODE_WRITE: | |
1486 | return state->n_wronly != 0; | |
1487 | case FMODE_READ: | |
1488 | return state->n_rdonly != 0; | |
1489 | } | |
1490 | WARN_ON_ONCE(1); | |
1491 | return false; | |
1492 | } | |
1493 | ||
be189f7e TM |
1494 | static int can_open_cached(struct nfs4_state *state, fmode_t mode, |
1495 | int open_mode, enum open_claim_type4 claim) | |
6ee41268 TM |
1496 | { |
1497 | int ret = 0; | |
dc0b027d | 1498 | |
536e43d1 | 1499 | if (open_mode & (O_EXCL|O_TRUNC)) |
dc0b027d | 1500 | goto out; |
be189f7e TM |
1501 | switch (claim) { |
1502 | case NFS4_OPEN_CLAIM_NULL: | |
1503 | case NFS4_OPEN_CLAIM_FH: | |
1504 | goto out; | |
1505 | default: | |
1506 | break; | |
1507 | } | |
dc0b027d | 1508 | switch (mode & (FMODE_READ|FMODE_WRITE)) { |
6ee41268 | 1509 | case FMODE_READ: |
88069f77 TM |
1510 | ret |= test_bit(NFS_O_RDONLY_STATE, &state->flags) != 0 |
1511 | && state->n_rdonly != 0; | |
6ee41268 TM |
1512 | break; |
1513 | case FMODE_WRITE: | |
88069f77 TM |
1514 | ret |= test_bit(NFS_O_WRONLY_STATE, &state->flags) != 0 |
1515 | && state->n_wronly != 0; | |
6ee41268 TM |
1516 | break; |
1517 | case FMODE_READ|FMODE_WRITE: | |
88069f77 TM |
1518 | ret |= test_bit(NFS_O_RDWR_STATE, &state->flags) != 0 |
1519 | && state->n_rdwr != 0; | |
6ee41268 | 1520 | } |
dc0b027d | 1521 | out: |
6ee41268 TM |
1522 | return ret; |
1523 | } | |
1524 | ||
2a606188 TM |
1525 | static int can_open_delegated(struct nfs_delegation *delegation, fmode_t fmode, |
1526 | enum open_claim_type4 claim) | |
aac00a8d | 1527 | { |
652f89f6 TM |
1528 | if (delegation == NULL) |
1529 | return 0; | |
dc0b027d | 1530 | if ((delegation->type & fmode) != fmode) |
aac00a8d | 1531 | return 0; |
2a606188 TM |
1532 | switch (claim) { |
1533 | case NFS4_OPEN_CLAIM_NULL: | |
1534 | case NFS4_OPEN_CLAIM_FH: | |
1535 | break; | |
1536 | case NFS4_OPEN_CLAIM_PREVIOUS: | |
1537 | if (!test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags)) | |
1538 | break; | |
df561f66 | 1539 | fallthrough; |
2a606188 TM |
1540 | default: |
1541 | return 0; | |
1542 | } | |
b7391f44 | 1543 | nfs_mark_delegation_referenced(delegation); |
aac00a8d TM |
1544 | return 1; |
1545 | } | |
1546 | ||
dc0b027d | 1547 | static void update_open_stateflags(struct nfs4_state *state, fmode_t fmode) |
e7616923 | 1548 | { |
dc0b027d | 1549 | switch (fmode) { |
e7616923 TM |
1550 | case FMODE_WRITE: |
1551 | state->n_wronly++; | |
1552 | break; | |
1553 | case FMODE_READ: | |
1554 | state->n_rdonly++; | |
1555 | break; | |
1556 | case FMODE_READ|FMODE_WRITE: | |
1557 | state->n_rdwr++; | |
1558 | } | |
dc0b027d | 1559 | nfs4_state_set_mode_locked(state, state->state | fmode); |
003707c7 TM |
1560 | } |
1561 | ||
8a64c4ef TM |
1562 | #ifdef CONFIG_NFS_V4_1 |
1563 | static bool nfs_open_stateid_recover_openmode(struct nfs4_state *state) | |
1564 | { | |
1565 | if (state->n_rdonly && !test_bit(NFS_O_RDONLY_STATE, &state->flags)) | |
1566 | return true; | |
1567 | if (state->n_wronly && !test_bit(NFS_O_WRONLY_STATE, &state->flags)) | |
1568 | return true; | |
1569 | if (state->n_rdwr && !test_bit(NFS_O_RDWR_STATE, &state->flags)) | |
1570 | return true; | |
1571 | return false; | |
1572 | } | |
1573 | #endif /* CONFIG_NFS_V4_1 */ | |
1574 | ||
c9399f21 TM |
1575 | static void nfs_state_log_update_open_stateid(struct nfs4_state *state) |
1576 | { | |
1577 | if (test_and_clear_bit(NFS_STATE_CHANGE_WAIT, &state->flags)) | |
1578 | wake_up_all(&state->waitq); | |
1579 | } | |
1580 | ||
4f14c194 TM |
1581 | static void nfs_test_and_clear_all_open_stateid(struct nfs4_state *state) |
1582 | { | |
1583 | struct nfs_client *clp = state->owner->so_server->nfs_client; | |
1584 | bool need_recover = false; | |
1585 | ||
1586 | if (test_and_clear_bit(NFS_O_RDONLY_STATE, &state->flags) && state->n_rdonly) | |
1587 | need_recover = true; | |
1588 | if (test_and_clear_bit(NFS_O_WRONLY_STATE, &state->flags) && state->n_wronly) | |
1589 | need_recover = true; | |
1590 | if (test_and_clear_bit(NFS_O_RDWR_STATE, &state->flags) && state->n_rdwr) | |
1591 | need_recover = true; | |
1592 | if (need_recover) | |
1593 | nfs4_state_mark_reclaim_nograce(clp, state); | |
1594 | } | |
1595 | ||
c9399f21 TM |
1596 | /* |
1597 | * Check for whether or not the caller may update the open stateid | |
1598 | * to the value passed in by stateid. | |
1599 | * | |
1600 | * Note: This function relies heavily on the server implementing | |
1601 | * RFC7530 Section 9.1.4.2, and RFC5661 Section 8.2.2 | |
1602 | * correctly. | |
1603 | * i.e. The stateid seqids have to be initialised to 1, and | |
1604 | * are then incremented on every state transition. | |
1605 | */ | |
b4868b44 | 1606 | static bool nfs_stateid_is_sequential(struct nfs4_state *state, |
c9399f21 | 1607 | const nfs4_stateid *stateid) |
e999e80e | 1608 | { |
b4868b44 BC |
1609 | if (test_bit(NFS_OPEN_STATE, &state->flags)) { |
1610 | /* The common case - we're updating to a new sequence number */ | |
1611 | if (nfs4_stateid_match_other(stateid, &state->open_stateid) && | |
1612 | nfs4_stateid_is_next(&state->open_stateid, stateid)) { | |
1613 | return true; | |
1614 | } | |
1615 | } else { | |
1616 | /* This is the first OPEN in this generation */ | |
c9399f21 | 1617 | if (stateid->seqid == cpu_to_be32(1)) |
b4868b44 | 1618 | return true; |
c9399f21 | 1619 | } |
e999e80e TM |
1620 | return false; |
1621 | } | |
1622 | ||
f95549cf TM |
1623 | static void nfs_resync_open_stateid_locked(struct nfs4_state *state) |
1624 | { | |
3c38cbe2 TM |
1625 | if (!(state->n_wronly || state->n_rdonly || state->n_rdwr)) |
1626 | return; | |
f95549cf TM |
1627 | if (state->n_wronly) |
1628 | set_bit(NFS_O_WRONLY_STATE, &state->flags); | |
1629 | if (state->n_rdonly) | |
1630 | set_bit(NFS_O_RDONLY_STATE, &state->flags); | |
1631 | if (state->n_rdwr) | |
1632 | set_bit(NFS_O_RDWR_STATE, &state->flags); | |
3c38cbe2 | 1633 | set_bit(NFS_OPEN_STATE, &state->flags); |
f95549cf TM |
1634 | } |
1635 | ||
226056c5 TM |
1636 | static void nfs_clear_open_stateid_locked(struct nfs4_state *state, |
1637 | nfs4_stateid *stateid, fmode_t fmode) | |
003707c7 | 1638 | { |
226056c5 TM |
1639 | clear_bit(NFS_O_RDWR_STATE, &state->flags); |
1640 | switch (fmode & (FMODE_READ|FMODE_WRITE)) { | |
1641 | case FMODE_WRITE: | |
1642 | clear_bit(NFS_O_RDONLY_STATE, &state->flags); | |
1643 | break; | |
1644 | case FMODE_READ: | |
1645 | clear_bit(NFS_O_WRONLY_STATE, &state->flags); | |
1646 | break; | |
1647 | case 0: | |
1648 | clear_bit(NFS_O_RDONLY_STATE, &state->flags); | |
1649 | clear_bit(NFS_O_WRONLY_STATE, &state->flags); | |
1650 | clear_bit(NFS_OPEN_STATE, &state->flags); | |
1651 | } | |
1652 | if (stateid == NULL) | |
1653 | return; | |
3e7dfb16 TM |
1654 | /* Handle OPEN+OPEN_DOWNGRADE races */ |
1655 | if (nfs4_stateid_match_other(stateid, &state->open_stateid) && | |
1656 | !nfs4_stateid_is_newer(stateid, &state->open_stateid)) { | |
f95549cf | 1657 | nfs_resync_open_stateid_locked(state); |
c9399f21 | 1658 | goto out; |
f95549cf | 1659 | } |
003707c7 | 1660 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0) |
f597c537 TM |
1661 | nfs4_stateid_copy(&state->stateid, stateid); |
1662 | nfs4_stateid_copy(&state->open_stateid, stateid); | |
ad9e02dc | 1663 | trace_nfs4_open_stateid_update(state->inode, stateid, 0); |
c9399f21 TM |
1664 | out: |
1665 | nfs_state_log_update_open_stateid(state); | |
226056c5 TM |
1666 | } |
1667 | ||
4a1e2feb TM |
1668 | static void nfs_clear_open_stateid(struct nfs4_state *state, |
1669 | nfs4_stateid *arg_stateid, | |
1670 | nfs4_stateid *stateid, fmode_t fmode) | |
226056c5 TM |
1671 | { |
1672 | write_seqlock(&state->seqlock); | |
3e7dfb16 TM |
1673 | /* Ignore, if the CLOSE argment doesn't match the current stateid */ |
1674 | if (nfs4_state_match_open_stateid_other(state, arg_stateid)) | |
1675 | nfs_clear_open_stateid_locked(state, stateid, fmode); | |
226056c5 | 1676 | write_sequnlock(&state->seqlock); |
4f14c194 TM |
1677 | if (test_bit(NFS_STATE_RECLAIM_NOGRACE, &state->flags)) |
1678 | nfs4_schedule_state_manager(state->owner->so_server->nfs_client); | |
226056c5 TM |
1679 | } |
1680 | ||
1393d961 | 1681 | static void nfs_set_open_stateid_locked(struct nfs4_state *state, |
c9399f21 | 1682 | const nfs4_stateid *stateid, nfs4_stateid *freeme) |
e9acf210 TM |
1683 | __must_hold(&state->owner->so_lock) |
1684 | __must_hold(&state->seqlock) | |
1685 | __must_hold(RCU) | |
1686 | ||
003707c7 | 1687 | { |
c9399f21 TM |
1688 | DEFINE_WAIT(wait); |
1689 | int status = 0; | |
1690 | for (;;) { | |
1691 | ||
b4868b44 | 1692 | if (nfs_stateid_is_sequential(state, stateid)) |
003707c7 | 1693 | break; |
b4868b44 | 1694 | |
c9399f21 | 1695 | if (status) |
003707c7 | 1696 | break; |
c9399f21 TM |
1697 | /* Rely on seqids for serialisation with NFSv4.0 */ |
1698 | if (!nfs4_has_session(NFS_SERVER(state->inode)->nfs_client)) | |
1699 | break; | |
1700 | ||
b4868b44 | 1701 | set_bit(NFS_STATE_CHANGE_WAIT, &state->flags); |
c9399f21 TM |
1702 | prepare_to_wait(&state->waitq, &wait, TASK_KILLABLE); |
1703 | /* | |
1704 | * Ensure we process the state changes in the same order | |
1705 | * in which the server processed them by delaying the | |
1706 | * update of the stateid until we are in sequence. | |
1707 | */ | |
1708 | write_sequnlock(&state->seqlock); | |
1709 | spin_unlock(&state->owner->so_lock); | |
1710 | rcu_read_unlock(); | |
ad9e02dc | 1711 | trace_nfs4_open_stateid_update_wait(state->inode, stateid, 0); |
b4868b44 | 1712 | |
bb002388 | 1713 | if (!fatal_signal_pending(current)) { |
c9399f21 TM |
1714 | if (schedule_timeout(5*HZ) == 0) |
1715 | status = -EAGAIN; | |
1716 | else | |
1717 | status = 0; | |
1718 | } else | |
1719 | status = -EINTR; | |
1720 | finish_wait(&state->waitq, &wait); | |
1721 | rcu_read_lock(); | |
1722 | spin_lock(&state->owner->so_lock); | |
1723 | write_seqlock(&state->seqlock); | |
003707c7 | 1724 | } |
c9399f21 | 1725 | |
e1fff5df TM |
1726 | if (test_bit(NFS_OPEN_STATE, &state->flags) && |
1727 | !nfs4_stateid_match_other(stateid, &state->open_stateid)) { | |
c9399f21 TM |
1728 | nfs4_stateid_copy(freeme, &state->open_stateid); |
1729 | nfs_test_and_clear_all_open_stateid(state); | |
1730 | } | |
1731 | ||
e999e80e TM |
1732 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0) |
1733 | nfs4_stateid_copy(&state->stateid, stateid); | |
1734 | nfs4_stateid_copy(&state->open_stateid, stateid); | |
ad9e02dc | 1735 | trace_nfs4_open_stateid_update(state->inode, stateid, status); |
c9399f21 | 1736 | nfs_state_log_update_open_stateid(state); |
003707c7 TM |
1737 | } |
1738 | ||
c9399f21 | 1739 | static void nfs_state_set_open_stateid(struct nfs4_state *state, |
1393d961 | 1740 | const nfs4_stateid *open_stateid, |
1393d961 TM |
1741 | fmode_t fmode, |
1742 | nfs4_stateid *freeme) | |
1da177e4 | 1743 | { |
8bda4e4c TM |
1744 | /* |
1745 | * Protect the call to nfs4_state_set_mode_locked and | |
1746 | * serialise the stateid update | |
1747 | */ | |
1748 | write_seqlock(&state->seqlock); | |
c9399f21 TM |
1749 | nfs_set_open_stateid_locked(state, open_stateid, freeme); |
1750 | switch (fmode) { | |
1751 | case FMODE_READ: | |
1752 | set_bit(NFS_O_RDONLY_STATE, &state->flags); | |
1753 | break; | |
1754 | case FMODE_WRITE: | |
1755 | set_bit(NFS_O_WRONLY_STATE, &state->flags); | |
1756 | break; | |
1757 | case FMODE_READ|FMODE_WRITE: | |
1758 | set_bit(NFS_O_RDWR_STATE, &state->flags); | |
003707c7 | 1759 | } |
c9399f21 TM |
1760 | set_bit(NFS_OPEN_STATE, &state->flags); |
1761 | write_sequnlock(&state->seqlock); | |
1762 | } | |
1763 | ||
27a30cf6 TM |
1764 | static void nfs_state_clear_open_state_flags(struct nfs4_state *state) |
1765 | { | |
1766 | clear_bit(NFS_O_RDWR_STATE, &state->flags); | |
1767 | clear_bit(NFS_O_WRONLY_STATE, &state->flags); | |
1768 | clear_bit(NFS_O_RDONLY_STATE, &state->flags); | |
1769 | clear_bit(NFS_OPEN_STATE, &state->flags); | |
1770 | } | |
1771 | ||
c9399f21 TM |
1772 | static void nfs_state_set_delegation(struct nfs4_state *state, |
1773 | const nfs4_stateid *deleg_stateid, | |
1774 | fmode_t fmode) | |
1775 | { | |
1776 | /* | |
1777 | * Protect the call to nfs4_state_set_mode_locked and | |
1778 | * serialise the stateid update | |
1779 | */ | |
1780 | write_seqlock(&state->seqlock); | |
1781 | nfs4_stateid_copy(&state->stateid, deleg_stateid); | |
1782 | set_bit(NFS_DELEGATED_STATE, &state->flags); | |
8bda4e4c | 1783 | write_sequnlock(&state->seqlock); |
1da177e4 LT |
1784 | } |
1785 | ||
9f0c5124 TM |
1786 | static void nfs_state_clear_delegation(struct nfs4_state *state) |
1787 | { | |
1788 | write_seqlock(&state->seqlock); | |
1789 | nfs4_stateid_copy(&state->stateid, &state->open_stateid); | |
1790 | clear_bit(NFS_DELEGATED_STATE, &state->flags); | |
1791 | write_sequnlock(&state->seqlock); | |
1792 | } | |
1793 | ||
ec4b0925 | 1794 | int update_open_stateid(struct nfs4_state *state, |
1393d961 TM |
1795 | const nfs4_stateid *open_stateid, |
1796 | const nfs4_stateid *delegation, | |
1797 | fmode_t fmode) | |
34310430 | 1798 | { |
1393d961 TM |
1799 | struct nfs_server *server = NFS_SERVER(state->inode); |
1800 | struct nfs_client *clp = server->nfs_client; | |
34310430 TM |
1801 | struct nfs_inode *nfsi = NFS_I(state->inode); |
1802 | struct nfs_delegation *deleg_cur; | |
83aa3e0f | 1803 | nfs4_stateid freeme = { }; |
34310430 TM |
1804 | int ret = 0; |
1805 | ||
dc0b027d | 1806 | fmode &= (FMODE_READ|FMODE_WRITE); |
34310430 TM |
1807 | |
1808 | rcu_read_lock(); | |
c9399f21 TM |
1809 | spin_lock(&state->owner->so_lock); |
1810 | if (open_stateid != NULL) { | |
1811 | nfs_state_set_open_stateid(state, open_stateid, fmode, &freeme); | |
1812 | ret = 1; | |
1813 | } | |
1814 | ||
333ac786 | 1815 | deleg_cur = nfs4_get_valid_delegation(state->inode); |
34310430 TM |
1816 | if (deleg_cur == NULL) |
1817 | goto no_delegation; | |
1818 | ||
1819 | spin_lock(&deleg_cur->lock); | |
17f26b12 | 1820 | if (rcu_dereference(nfsi->delegation) != deleg_cur || |
d25be546 | 1821 | test_bit(NFS_DELEGATION_RETURNING, &deleg_cur->flags) || |
dc0b027d | 1822 | (deleg_cur->type & fmode) != fmode) |
34310430 TM |
1823 | goto no_delegation_unlock; |
1824 | ||
1825 | if (delegation == NULL) | |
1826 | delegation = &deleg_cur->stateid; | |
333ac786 | 1827 | else if (!nfs4_stateid_match_other(&deleg_cur->stateid, delegation)) |
34310430 TM |
1828 | goto no_delegation_unlock; |
1829 | ||
b7391f44 | 1830 | nfs_mark_delegation_referenced(deleg_cur); |
c9399f21 | 1831 | nfs_state_set_delegation(state, &deleg_cur->stateid, fmode); |
34310430 TM |
1832 | ret = 1; |
1833 | no_delegation_unlock: | |
1834 | spin_unlock(&deleg_cur->lock); | |
1835 | no_delegation: | |
c9399f21 TM |
1836 | if (ret) |
1837 | update_open_stateflags(state, fmode); | |
1838 | spin_unlock(&state->owner->so_lock); | |
34310430 TM |
1839 | rcu_read_unlock(); |
1840 | ||
4f14c194 | 1841 | if (test_bit(NFS_STATE_RECLAIM_NOGRACE, &state->flags)) |
1393d961 TM |
1842 | nfs4_schedule_state_manager(clp); |
1843 | if (freeme.type != 0) | |
1844 | nfs4_test_and_free_stateid(server, &freeme, | |
1845 | state->owner->so_cred); | |
34310430 TM |
1846 | |
1847 | return ret; | |
1848 | } | |
1849 | ||
39071e6f TM |
1850 | static bool nfs4_update_lock_stateid(struct nfs4_lock_state *lsp, |
1851 | const nfs4_stateid *stateid) | |
1852 | { | |
1853 | struct nfs4_state *state = lsp->ls_state; | |
1854 | bool ret = false; | |
1855 | ||
1856 | spin_lock(&state->state_lock); | |
1857 | if (!nfs4_stateid_match_other(stateid, &lsp->ls_stateid)) | |
1858 | goto out_noupdate; | |
1859 | if (!nfs4_stateid_is_newer(stateid, &lsp->ls_stateid)) | |
1860 | goto out_noupdate; | |
1861 | nfs4_stateid_copy(&lsp->ls_stateid, stateid); | |
1862 | ret = true; | |
1863 | out_noupdate: | |
1864 | spin_unlock(&state->state_lock); | |
1865 | return ret; | |
1866 | } | |
34310430 | 1867 | |
dc0b027d | 1868 | static void nfs4_return_incompatible_delegation(struct inode *inode, fmode_t fmode) |
aac00a8d TM |
1869 | { |
1870 | struct nfs_delegation *delegation; | |
1871 | ||
f5086242 | 1872 | fmode &= FMODE_READ|FMODE_WRITE; |
aac00a8d | 1873 | rcu_read_lock(); |
40e6aa10 | 1874 | delegation = nfs4_get_valid_delegation(inode); |
dc0b027d | 1875 | if (delegation == NULL || (delegation->type & fmode) == fmode) { |
aac00a8d TM |
1876 | rcu_read_unlock(); |
1877 | return; | |
1878 | } | |
1879 | rcu_read_unlock(); | |
57ec14c5 | 1880 | nfs4_inode_return_delegation(inode); |
aac00a8d TM |
1881 | } |
1882 | ||
6ee41268 | 1883 | static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata) |
aac00a8d TM |
1884 | { |
1885 | struct nfs4_state *state = opendata->state; | |
aac00a8d | 1886 | struct nfs_delegation *delegation; |
f448badd | 1887 | int open_mode = opendata->o_arg.open_flags; |
dc0b027d | 1888 | fmode_t fmode = opendata->o_arg.fmode; |
2a606188 | 1889 | enum open_claim_type4 claim = opendata->o_arg.claim; |
aac00a8d TM |
1890 | nfs4_stateid stateid; |
1891 | int ret = -EAGAIN; | |
1892 | ||
aac00a8d | 1893 | for (;;) { |
61beef75 | 1894 | spin_lock(&state->owner->so_lock); |
be189f7e | 1895 | if (can_open_cached(state, fmode, open_mode, claim)) { |
61beef75 | 1896 | update_open_stateflags(state, fmode); |
6ee41268 | 1897 | spin_unlock(&state->owner->so_lock); |
61beef75 | 1898 | goto out_return_state; |
6ee41268 | 1899 | } |
61beef75 | 1900 | spin_unlock(&state->owner->so_lock); |
34310430 | 1901 | rcu_read_lock(); |
be3df3dd | 1902 | delegation = nfs4_get_valid_delegation(state->inode); |
2a606188 | 1903 | if (!can_open_delegated(delegation, fmode, claim)) { |
34310430 | 1904 | rcu_read_unlock(); |
aac00a8d | 1905 | break; |
34310430 | 1906 | } |
aac00a8d | 1907 | /* Save the delegation */ |
f597c537 | 1908 | nfs4_stateid_copy(&stateid, &delegation->stateid); |
aac00a8d | 1909 | rcu_read_unlock(); |
fa332941 | 1910 | nfs_release_seqid(opendata->o_arg.seqid); |
bdeca1b7 TM |
1911 | if (!opendata->is_recover) { |
1912 | ret = nfs_may_open(state->inode, state->owner->so_cred, open_mode); | |
1913 | if (ret != 0) | |
1914 | goto out; | |
1915 | } | |
aac00a8d | 1916 | ret = -EAGAIN; |
34310430 TM |
1917 | |
1918 | /* Try to update the stateid using the delegation */ | |
dc0b027d | 1919 | if (update_open_stateid(state, NULL, &stateid, fmode)) |
34310430 | 1920 | goto out_return_state; |
aac00a8d | 1921 | } |
aac00a8d TM |
1922 | out: |
1923 | return ERR_PTR(ret); | |
1924 | out_return_state: | |
ace9fad4 | 1925 | refcount_inc(&state->count); |
aac00a8d TM |
1926 | return state; |
1927 | } | |
1928 | ||
e23008ec AA |
1929 | static void |
1930 | nfs4_opendata_check_deleg(struct nfs4_opendata *data, struct nfs4_state *state) | |
1931 | { | |
1932 | struct nfs_client *clp = NFS_SERVER(state->inode)->nfs_client; | |
1933 | struct nfs_delegation *delegation; | |
1934 | int delegation_flags = 0; | |
1935 | ||
1936 | rcu_read_lock(); | |
1937 | delegation = rcu_dereference(NFS_I(state->inode)->delegation); | |
1938 | if (delegation) | |
1939 | delegation_flags = delegation->flags; | |
1940 | rcu_read_unlock(); | |
72d79ff8 TM |
1941 | switch (data->o_arg.claim) { |
1942 | default: | |
1943 | break; | |
1944 | case NFS4_OPEN_CLAIM_DELEGATE_CUR: | |
1945 | case NFS4_OPEN_CLAIM_DELEG_CUR_FH: | |
e23008ec AA |
1946 | pr_err_ratelimited("NFS: Broken NFSv4 server %s is " |
1947 | "returning a delegation for " | |
1948 | "OPEN(CLAIM_DELEGATE_CUR)\n", | |
1949 | clp->cl_hostname); | |
72d79ff8 TM |
1950 | return; |
1951 | } | |
1952 | if ((delegation_flags & 1UL<<NFS_DELEGATION_NEED_RECLAIM) == 0) | |
e23008ec | 1953 | nfs_inode_set_delegation(state->inode, |
35156bff TM |
1954 | data->owner->so_cred, |
1955 | data->o_res.delegation_type, | |
1956 | &data->o_res.delegation, | |
1957 | data->o_res.pagemod_limit); | |
e23008ec AA |
1958 | else |
1959 | nfs_inode_reclaim_delegation(state->inode, | |
35156bff TM |
1960 | data->owner->so_cred, |
1961 | data->o_res.delegation_type, | |
1962 | &data->o_res.delegation, | |
1963 | data->o_res.pagemod_limit); | |
8b199e58 JL |
1964 | |
1965 | if (data->o_res.do_recall) | |
1966 | nfs_async_inode_return_delegation(state->inode, | |
1967 | &data->o_res.delegation); | |
e23008ec AA |
1968 | } |
1969 | ||
1970 | /* | |
1971 | * Check the inode attributes against the CLAIM_PREVIOUS returned attributes | |
1972 | * and update the nfs4_state. | |
1973 | */ | |
1974 | static struct nfs4_state * | |
1975 | _nfs4_opendata_reclaim_to_nfs4_state(struct nfs4_opendata *data) | |
1976 | { | |
1977 | struct inode *inode = data->state->inode; | |
1978 | struct nfs4_state *state = data->state; | |
1979 | int ret; | |
1980 | ||
d2bfda2e | 1981 | if (!data->rpc_done) { |
37a8484a AS |
1982 | if (data->rpc_status) |
1983 | return ERR_PTR(data->rpc_status); | |
d2bfda2e WAA |
1984 | /* cached opens have already been processed */ |
1985 | goto update; | |
e23008ec AA |
1986 | } |
1987 | ||
e23008ec AA |
1988 | ret = nfs_refresh_inode(inode, &data->f_attr); |
1989 | if (ret) | |
37a8484a | 1990 | return ERR_PTR(ret); |
e23008ec AA |
1991 | |
1992 | if (data->o_res.delegation_type != 0) | |
1993 | nfs4_opendata_check_deleg(data, state); | |
d2bfda2e | 1994 | update: |
e3c8dc76 TM |
1995 | if (!update_open_stateid(state, &data->o_res.stateid, |
1996 | NULL, data->o_arg.fmode)) | |
1997 | return ERR_PTR(-EAGAIN); | |
ace9fad4 | 1998 | refcount_inc(&state->count); |
e23008ec AA |
1999 | |
2000 | return state; | |
e23008ec AA |
2001 | } |
2002 | ||
4e2fcac7 TM |
2003 | static struct inode * |
2004 | nfs4_opendata_get_inode(struct nfs4_opendata *data) | |
2005 | { | |
2006 | struct inode *inode; | |
2007 | ||
2008 | switch (data->o_arg.claim) { | |
2009 | case NFS4_OPEN_CLAIM_NULL: | |
2010 | case NFS4_OPEN_CLAIM_DELEGATE_CUR: | |
2011 | case NFS4_OPEN_CLAIM_DELEGATE_PREV: | |
2012 | if (!(data->f_attr.valid & NFS_ATTR_FATTR)) | |
2013 | return ERR_PTR(-EAGAIN); | |
2014 | inode = nfs_fhget(data->dir->d_sb, &data->o_res.fh, | |
2015 | &data->f_attr, data->f_label); | |
2016 | break; | |
2017 | default: | |
2018 | inode = d_inode(data->dentry); | |
2019 | ihold(inode); | |
2020 | nfs_refresh_inode(inode, &data->f_attr); | |
2021 | } | |
2022 | return inode; | |
2023 | } | |
2024 | ||
e23008ec | 2025 | static struct nfs4_state * |
75e8c48b | 2026 | nfs4_opendata_find_nfs4_state(struct nfs4_opendata *data) |
24ac23ab | 2027 | { |
75e8c48b | 2028 | struct nfs4_state *state; |
24ac23ab | 2029 | struct inode *inode; |
75e8c48b TM |
2030 | |
2031 | inode = nfs4_opendata_get_inode(data); | |
2032 | if (IS_ERR(inode)) | |
2033 | return ERR_CAST(inode); | |
2034 | if (data->state != NULL && data->state->inode == inode) { | |
2035 | state = data->state; | |
ace9fad4 | 2036 | refcount_inc(&state->count); |
75e8c48b TM |
2037 | } else |
2038 | state = nfs4_get_open_state(inode, data->owner); | |
2039 | iput(inode); | |
2040 | if (state == NULL) | |
2041 | state = ERR_PTR(-ENOMEM); | |
2042 | return state; | |
2043 | } | |
2044 | ||
2045 | static struct nfs4_state * | |
2046 | _nfs4_opendata_to_nfs4_state(struct nfs4_opendata *data) | |
2047 | { | |
2048 | struct nfs4_state *state; | |
24ac23ab | 2049 | |
aac00a8d | 2050 | if (!data->rpc_done) { |
6ee41268 | 2051 | state = nfs4_try_open_cached(data); |
9759b0fb | 2052 | trace_nfs4_cached_open(data->state); |
aac00a8d TM |
2053 | goto out; |
2054 | } | |
2055 | ||
75e8c48b TM |
2056 | state = nfs4_opendata_find_nfs4_state(data); |
2057 | if (IS_ERR(state)) | |
2058 | goto out; | |
2059 | ||
e23008ec AA |
2060 | if (data->o_res.delegation_type != 0) |
2061 | nfs4_opendata_check_deleg(data, state); | |
e3c8dc76 TM |
2062 | if (!update_open_stateid(state, &data->o_res.stateid, |
2063 | NULL, data->o_arg.fmode)) { | |
2064 | nfs4_put_open_state(state); | |
2065 | state = ERR_PTR(-EAGAIN); | |
2066 | } | |
aac00a8d | 2067 | out: |
7aa262b5 | 2068 | nfs_release_seqid(data->o_arg.seqid); |
24ac23ab TM |
2069 | return state; |
2070 | } | |
2071 | ||
e23008ec AA |
2072 | static struct nfs4_state * |
2073 | nfs4_opendata_to_nfs4_state(struct nfs4_opendata *data) | |
2074 | { | |
2e80dbe7 TM |
2075 | struct nfs4_state *ret; |
2076 | ||
e23008ec | 2077 | if (data->o_arg.claim == NFS4_OPEN_CLAIM_PREVIOUS) |
2e80dbe7 TM |
2078 | ret =_nfs4_opendata_reclaim_to_nfs4_state(data); |
2079 | else | |
2080 | ret = _nfs4_opendata_to_nfs4_state(data); | |
2081 | nfs4_sequence_free_slot(&data->o_res.seq_res); | |
2082 | return ret; | |
e23008ec AA |
2083 | } |
2084 | ||
0de43976 TM |
2085 | static struct nfs_open_context * |
2086 | nfs4_state_find_open_context_mode(struct nfs4_state *state, fmode_t mode) | |
864472e9 TM |
2087 | { |
2088 | struct nfs_inode *nfsi = NFS_I(state->inode); | |
2089 | struct nfs_open_context *ctx; | |
2090 | ||
0de43976 TM |
2091 | rcu_read_lock(); |
2092 | list_for_each_entry_rcu(ctx, &nfsi->open_files, list) { | |
864472e9 TM |
2093 | if (ctx->state != state) |
2094 | continue; | |
0de43976 TM |
2095 | if ((ctx->mode & mode) != mode) |
2096 | continue; | |
2097 | if (!get_nfs_open_context(ctx)) | |
2098 | continue; | |
2099 | rcu_read_unlock(); | |
864472e9 TM |
2100 | return ctx; |
2101 | } | |
0de43976 | 2102 | rcu_read_unlock(); |
864472e9 TM |
2103 | return ERR_PTR(-ENOENT); |
2104 | } | |
2105 | ||
0de43976 TM |
2106 | static struct nfs_open_context * |
2107 | nfs4_state_find_open_context(struct nfs4_state *state) | |
2108 | { | |
2109 | struct nfs_open_context *ctx; | |
2110 | ||
2111 | ctx = nfs4_state_find_open_context_mode(state, FMODE_READ|FMODE_WRITE); | |
2112 | if (!IS_ERR(ctx)) | |
2113 | return ctx; | |
2114 | ctx = nfs4_state_find_open_context_mode(state, FMODE_WRITE); | |
2115 | if (!IS_ERR(ctx)) | |
2116 | return ctx; | |
2117 | return nfs4_state_find_open_context_mode(state, FMODE_READ); | |
2118 | } | |
2119 | ||
4a1c0893 TM |
2120 | static struct nfs4_opendata *nfs4_open_recoverdata_alloc(struct nfs_open_context *ctx, |
2121 | struct nfs4_state *state, enum open_claim_type4 claim) | |
6f220ed5 TM |
2122 | { |
2123 | struct nfs4_opendata *opendata; | |
2124 | ||
4a1c0893 | 2125 | opendata = nfs4_opendata_alloc(ctx->dentry, state->owner, 0, 0, |
8fd1ab74 | 2126 | NULL, claim, GFP_NOFS); |
6f220ed5 TM |
2127 | if (opendata == NULL) |
2128 | return ERR_PTR(-ENOMEM); | |
2129 | opendata->state = state; | |
ace9fad4 | 2130 | refcount_inc(&state->count); |
6f220ed5 TM |
2131 | return opendata; |
2132 | } | |
2133 | ||
24311f88 TM |
2134 | static int nfs4_open_recover_helper(struct nfs4_opendata *opendata, |
2135 | fmode_t fmode) | |
864472e9 | 2136 | { |
2ced46c2 | 2137 | struct nfs4_state *newstate; |
864472e9 TM |
2138 | int ret; |
2139 | ||
24311f88 | 2140 | if (!nfs4_mode_match_open_stateid(opendata->state, fmode)) |
39f897fd | 2141 | return 0; |
dc0b027d TM |
2142 | opendata->o_arg.open_flags = 0; |
2143 | opendata->o_arg.fmode = fmode; | |
be36e185 TM |
2144 | opendata->o_arg.share_access = nfs4_map_atomic_open_share( |
2145 | NFS_SB(opendata->dentry->d_sb), | |
2146 | fmode, 0); | |
2ced46c2 TM |
2147 | memset(&opendata->o_res, 0, sizeof(opendata->o_res)); |
2148 | memset(&opendata->c_res, 0, sizeof(opendata->c_res)); | |
2149 | nfs4_init_opendata_res(opendata); | |
b257957e | 2150 | ret = _nfs4_recover_proc_open(opendata); |
864472e9 TM |
2151 | if (ret != 0) |
2152 | return ret; | |
2ced46c2 | 2153 | newstate = nfs4_opendata_to_nfs4_state(opendata); |
1b370bc2 TM |
2154 | if (IS_ERR(newstate)) |
2155 | return PTR_ERR(newstate); | |
24311f88 TM |
2156 | if (newstate != opendata->state) |
2157 | ret = -ESTALE; | |
643168c2 | 2158 | nfs4_close_state(newstate, fmode); |
24311f88 | 2159 | return ret; |
864472e9 TM |
2160 | } |
2161 | ||
2162 | static int nfs4_open_recover(struct nfs4_opendata *opendata, struct nfs4_state *state) | |
2163 | { | |
864472e9 TM |
2164 | int ret; |
2165 | ||
2166 | /* memory barrier prior to reading state->n_* */ | |
2167 | smp_rmb(); | |
24311f88 TM |
2168 | ret = nfs4_open_recover_helper(opendata, FMODE_READ|FMODE_WRITE); |
2169 | if (ret != 0) | |
2170 | return ret; | |
2171 | ret = nfs4_open_recover_helper(opendata, FMODE_WRITE); | |
2172 | if (ret != 0) | |
2173 | return ret; | |
2174 | ret = nfs4_open_recover_helper(opendata, FMODE_READ); | |
2175 | if (ret != 0) | |
2176 | return ret; | |
1ac7e2fd TM |
2177 | /* |
2178 | * We may have performed cached opens for all three recoveries. | |
2179 | * Check if we need to update the current stateid. | |
2180 | */ | |
2181 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0 && | |
f597c537 | 2182 | !nfs4_stateid_match(&state->stateid, &state->open_stateid)) { |
8bda4e4c | 2183 | write_seqlock(&state->seqlock); |
1ac7e2fd | 2184 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0) |
f597c537 | 2185 | nfs4_stateid_copy(&state->stateid, &state->open_stateid); |
8bda4e4c | 2186 | write_sequnlock(&state->seqlock); |
1ac7e2fd | 2187 | } |
864472e9 TM |
2188 | return 0; |
2189 | } | |
2190 | ||
1da177e4 LT |
2191 | /* |
2192 | * OPEN_RECLAIM: | |
2193 | * reclaim state on the server after a reboot. | |
1da177e4 | 2194 | */ |
539cd03a | 2195 | static int _nfs4_do_open_reclaim(struct nfs_open_context *ctx, struct nfs4_state *state) |
1da177e4 | 2196 | { |
1ac7e2fd | 2197 | struct nfs_delegation *delegation; |
864472e9 | 2198 | struct nfs4_opendata *opendata; |
dc0b027d | 2199 | fmode_t delegation_type = 0; |
1da177e4 LT |
2200 | int status; |
2201 | ||
4a1c0893 TM |
2202 | opendata = nfs4_open_recoverdata_alloc(ctx, state, |
2203 | NFS4_OPEN_CLAIM_PREVIOUS); | |
6f220ed5 TM |
2204 | if (IS_ERR(opendata)) |
2205 | return PTR_ERR(opendata); | |
1ac7e2fd TM |
2206 | rcu_read_lock(); |
2207 | delegation = rcu_dereference(NFS_I(state->inode)->delegation); | |
15c831bf | 2208 | if (delegation != NULL && test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags) != 0) |
65bbf6bd | 2209 | delegation_type = delegation->type; |
1ac7e2fd | 2210 | rcu_read_unlock(); |
864472e9 TM |
2211 | opendata->o_arg.u.delegation_type = delegation_type; |
2212 | status = nfs4_open_recover(opendata, state); | |
c6d00e63 | 2213 | nfs4_opendata_put(opendata); |
1da177e4 LT |
2214 | return status; |
2215 | } | |
2216 | ||
539cd03a | 2217 | static int nfs4_do_open_reclaim(struct nfs_open_context *ctx, struct nfs4_state *state) |
1da177e4 LT |
2218 | { |
2219 | struct nfs_server *server = NFS_SERVER(state->inode); | |
2220 | struct nfs4_exception exception = { }; | |
2221 | int err; | |
2222 | do { | |
539cd03a | 2223 | err = _nfs4_do_open_reclaim(ctx, state); |
42113a75 | 2224 | trace_nfs4_open_reclaim(ctx, 0, err); |
49f9a0fa TM |
2225 | if (nfs4_clear_cap_atomic_open_v1(server, err, &exception)) |
2226 | continue; | |
168667c4 | 2227 | if (err != -NFS4ERR_DELAY) |
202b50dc TM |
2228 | break; |
2229 | nfs4_handle_exception(server, err, &exception); | |
1da177e4 LT |
2230 | } while (exception.retry); |
2231 | return err; | |
2232 | } | |
2233 | ||
864472e9 TM |
2234 | static int nfs4_open_reclaim(struct nfs4_state_owner *sp, struct nfs4_state *state) |
2235 | { | |
2236 | struct nfs_open_context *ctx; | |
2237 | int ret; | |
2238 | ||
2239 | ctx = nfs4_state_find_open_context(state); | |
2240 | if (IS_ERR(ctx)) | |
91876b13 | 2241 | return -EAGAIN; |
27a30cf6 TM |
2242 | clear_bit(NFS_DELEGATED_STATE, &state->flags); |
2243 | nfs_state_clear_open_state_flags(state); | |
539cd03a | 2244 | ret = nfs4_do_open_reclaim(ctx, state); |
864472e9 TM |
2245 | put_nfs_open_context(ctx); |
2246 | return ret; | |
2247 | } | |
2248 | ||
dce2630c | 2249 | static int nfs4_handle_delegation_recall_error(struct nfs_server *server, struct nfs4_state *state, const nfs4_stateid *stateid, struct file_lock *fl, int err) |
1da177e4 | 2250 | { |
be76b5b6 TM |
2251 | switch (err) { |
2252 | default: | |
2253 | printk(KERN_ERR "NFS: %s: unhandled error " | |
2254 | "%d.\n", __func__, err); | |
ffb81717 | 2255 | fallthrough; |
be76b5b6 TM |
2256 | case 0: |
2257 | case -ENOENT: | |
8eee52af | 2258 | case -EAGAIN: |
be76b5b6 | 2259 | case -ESTALE: |
67e7b52d | 2260 | case -ETIMEDOUT: |
be76b5b6 TM |
2261 | break; |
2262 | case -NFS4ERR_BADSESSION: | |
2263 | case -NFS4ERR_BADSLOT: | |
2264 | case -NFS4ERR_BAD_HIGH_SLOT: | |
2265 | case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: | |
2266 | case -NFS4ERR_DEADSESSION: | |
be76b5b6 TM |
2267 | return -EAGAIN; |
2268 | case -NFS4ERR_STALE_CLIENTID: | |
2269 | case -NFS4ERR_STALE_STATEID: | |
be76b5b6 TM |
2270 | /* Don't recall a delegation if it was lost */ |
2271 | nfs4_schedule_lease_recovery(server->nfs_client); | |
2272 | return -EAGAIN; | |
352297b9 CL |
2273 | case -NFS4ERR_MOVED: |
2274 | nfs4_schedule_migration_recovery(server); | |
2275 | return -EAGAIN; | |
8ef2f8d4 CL |
2276 | case -NFS4ERR_LEASE_MOVED: |
2277 | nfs4_schedule_lease_moved_recovery(server->nfs_client); | |
2278 | return -EAGAIN; | |
be76b5b6 TM |
2279 | case -NFS4ERR_DELEG_REVOKED: |
2280 | case -NFS4ERR_ADMIN_REVOKED: | |
404ea356 | 2281 | case -NFS4ERR_EXPIRED: |
be76b5b6 | 2282 | case -NFS4ERR_BAD_STATEID: |
db4f2e63 | 2283 | case -NFS4ERR_OPENMODE: |
be76b5b6 TM |
2284 | nfs_inode_find_state_and_recover(state->inode, |
2285 | stateid); | |
2286 | nfs4_schedule_stateid_recovery(server, state); | |
869f9dfa | 2287 | return -EAGAIN; |
be76b5b6 TM |
2288 | case -NFS4ERR_DELAY: |
2289 | case -NFS4ERR_GRACE: | |
be76b5b6 TM |
2290 | ssleep(1); |
2291 | return -EAGAIN; | |
db4f2e63 TM |
2292 | case -ENOMEM: |
2293 | case -NFS4ERR_DENIED: | |
dce2630c N |
2294 | if (fl) { |
2295 | struct nfs4_lock_state *lsp = fl->fl_u.nfs4_fl.owner; | |
2296 | if (lsp) | |
2297 | set_bit(NFS_LOCK_LOST, &lsp->ls_flags); | |
2298 | } | |
db4f2e63 | 2299 | return 0; |
be76b5b6 | 2300 | } |
1da177e4 LT |
2301 | return err; |
2302 | } | |
2303 | ||
24311f88 | 2304 | int nfs4_open_delegation_recall(struct nfs_open_context *ctx, |
5eb8d18c | 2305 | struct nfs4_state *state, const nfs4_stateid *stateid) |
db4f2e63 TM |
2306 | { |
2307 | struct nfs_server *server = NFS_SERVER(state->inode); | |
2308 | struct nfs4_opendata *opendata; | |
24311f88 | 2309 | int err = 0; |
db4f2e63 TM |
2310 | |
2311 | opendata = nfs4_open_recoverdata_alloc(ctx, state, | |
2312 | NFS4_OPEN_CLAIM_DELEG_CUR_FH); | |
2313 | if (IS_ERR(opendata)) | |
2314 | return PTR_ERR(opendata); | |
2315 | nfs4_stateid_copy(&opendata->o_arg.u.delegation, stateid); | |
5eb8d18c | 2316 | if (!test_bit(NFS_O_RDWR_STATE, &state->flags)) { |
24311f88 TM |
2317 | err = nfs4_open_recover_helper(opendata, FMODE_READ|FMODE_WRITE); |
2318 | if (err) | |
5eb8d18c TM |
2319 | goto out; |
2320 | } | |
2321 | if (!test_bit(NFS_O_WRONLY_STATE, &state->flags)) { | |
24311f88 TM |
2322 | err = nfs4_open_recover_helper(opendata, FMODE_WRITE); |
2323 | if (err) | |
5eb8d18c TM |
2324 | goto out; |
2325 | } | |
2326 | if (!test_bit(NFS_O_RDONLY_STATE, &state->flags)) { | |
24311f88 | 2327 | err = nfs4_open_recover_helper(opendata, FMODE_READ); |
5eb8d18c TM |
2328 | if (err) |
2329 | goto out; | |
24311f88 | 2330 | } |
5eb8d18c TM |
2331 | nfs_state_clear_delegation(state); |
2332 | out: | |
db4f2e63 | 2333 | nfs4_opendata_put(opendata); |
dce2630c | 2334 | return nfs4_handle_delegation_recall_error(server, state, stateid, NULL, err); |
db4f2e63 TM |
2335 | } |
2336 | ||
be05c860 CL |
2337 | static void nfs4_open_confirm_prepare(struct rpc_task *task, void *calldata) |
2338 | { | |
2339 | struct nfs4_opendata *data = calldata; | |
2340 | ||
7981c8a6 AS |
2341 | nfs4_setup_sequence(data->o_arg.server->nfs_client, |
2342 | &data->c_arg.seq_args, &data->c_res.seq_res, task); | |
be05c860 CL |
2343 | } |
2344 | ||
cdd4e68b TM |
2345 | static void nfs4_open_confirm_done(struct rpc_task *task, void *calldata) |
2346 | { | |
2347 | struct nfs4_opendata *data = calldata; | |
2348 | ||
17ead6c8 | 2349 | nfs40_sequence_done(task, &data->c_res.seq_res); |
be05c860 | 2350 | |
cdd4e68b | 2351 | data->rpc_status = task->tk_status; |
26e976a8 | 2352 | if (data->rpc_status == 0) { |
f597c537 | 2353 | nfs4_stateid_copy(&data->o_res.stateid, &data->c_res.stateid); |
bb22629e | 2354 | nfs_confirm_seqid(&data->owner->so_seqid, 0); |
26e976a8 | 2355 | renew_lease(data->o_res.server, data->timestamp); |
a7a3b1e9 | 2356 | data->rpc_done = true; |
26e976a8 | 2357 | } |
cdd4e68b TM |
2358 | } |
2359 | ||
2360 | static void nfs4_open_confirm_release(void *calldata) | |
2361 | { | |
2362 | struct nfs4_opendata *data = calldata; | |
2363 | struct nfs4_state *state = NULL; | |
2364 | ||
2365 | /* If this request hasn't been cancelled, do nothing */ | |
a7a3b1e9 | 2366 | if (!data->cancelled) |
cdd4e68b TM |
2367 | goto out_free; |
2368 | /* In case of error, no cleanup! */ | |
3e309914 | 2369 | if (!data->rpc_done) |
cdd4e68b | 2370 | goto out_free; |
cdd4e68b | 2371 | state = nfs4_opendata_to_nfs4_state(data); |
1b370bc2 | 2372 | if (!IS_ERR(state)) |
643168c2 | 2373 | nfs4_close_state(state, data->o_arg.fmode); |
cdd4e68b | 2374 | out_free: |
c6d00e63 | 2375 | nfs4_opendata_put(data); |
cdd4e68b TM |
2376 | } |
2377 | ||
2378 | static const struct rpc_call_ops nfs4_open_confirm_ops = { | |
be05c860 | 2379 | .rpc_call_prepare = nfs4_open_confirm_prepare, |
cdd4e68b TM |
2380 | .rpc_call_done = nfs4_open_confirm_done, |
2381 | .rpc_release = nfs4_open_confirm_release, | |
2382 | }; | |
2383 | ||
2384 | /* | |
2385 | * Note: On error, nfs4_proc_open_confirm will free the struct nfs4_opendata | |
2386 | */ | |
2387 | static int _nfs4_proc_open_confirm(struct nfs4_opendata *data) | |
2388 | { | |
2b0143b5 | 2389 | struct nfs_server *server = NFS_SERVER(d_inode(data->dir)); |
cdd4e68b | 2390 | struct rpc_task *task; |
5138fde0 TM |
2391 | struct rpc_message msg = { |
2392 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_CONFIRM], | |
2393 | .rpc_argp = &data->c_arg, | |
2394 | .rpc_resp = &data->c_res, | |
2395 | .rpc_cred = data->owner->so_cred, | |
2396 | }; | |
c970aa85 TM |
2397 | struct rpc_task_setup task_setup_data = { |
2398 | .rpc_client = server->client, | |
5138fde0 | 2399 | .rpc_message = &msg, |
c970aa85 TM |
2400 | .callback_ops = &nfs4_open_confirm_ops, |
2401 | .callback_data = data, | |
101070ca | 2402 | .workqueue = nfsiod_workqueue, |
61296507 | 2403 | .flags = RPC_TASK_ASYNC | RPC_TASK_CRED_NOREF, |
c970aa85 | 2404 | }; |
1da177e4 LT |
2405 | int status; |
2406 | ||
fba83f34 AS |
2407 | nfs4_init_sequence(&data->c_arg.seq_args, &data->c_res.seq_res, 1, |
2408 | data->is_recover); | |
c6d00e63 | 2409 | kref_get(&data->kref); |
a7a3b1e9 | 2410 | data->rpc_done = false; |
3e309914 | 2411 | data->rpc_status = 0; |
5138fde0 | 2412 | data->timestamp = jiffies; |
c970aa85 | 2413 | task = rpc_run_task(&task_setup_data); |
7a1218a2 | 2414 | if (IS_ERR(task)) |
cdd4e68b | 2415 | return PTR_ERR(task); |
820bf85c | 2416 | status = rpc_wait_for_completion_task(task); |
cdd4e68b | 2417 | if (status != 0) { |
a7a3b1e9 | 2418 | data->cancelled = true; |
cdd4e68b TM |
2419 | smp_wmb(); |
2420 | } else | |
2421 | status = data->rpc_status; | |
e6b3c4db | 2422 | rpc_put_task(task); |
1da177e4 LT |
2423 | return status; |
2424 | } | |
2425 | ||
24ac23ab | 2426 | static void nfs4_open_prepare(struct rpc_task *task, void *calldata) |
1da177e4 | 2427 | { |
24ac23ab TM |
2428 | struct nfs4_opendata *data = calldata; |
2429 | struct nfs4_state_owner *sp = data->owner; | |
549b19cc | 2430 | struct nfs_client *clp = sp->so_server->nfs_client; |
2a606188 | 2431 | enum open_claim_type4 claim = data->o_arg.claim; |
5138fde0 | 2432 | |
24ac23ab | 2433 | if (nfs_wait_on_sequence(data->o_arg.seqid, task) != 0) |
c8da19b9 | 2434 | goto out_wait; |
aac00a8d TM |
2435 | /* |
2436 | * Check if we still need to send an OPEN call, or if we can use | |
2437 | * a delegation instead. | |
2438 | */ | |
2439 | if (data->state != NULL) { | |
2440 | struct nfs_delegation *delegation; | |
2441 | ||
be189f7e TM |
2442 | if (can_open_cached(data->state, data->o_arg.fmode, |
2443 | data->o_arg.open_flags, claim)) | |
6ee41268 | 2444 | goto out_no_action; |
aac00a8d | 2445 | rcu_read_lock(); |
be3df3dd | 2446 | delegation = nfs4_get_valid_delegation(data->state->inode); |
2a606188 | 2447 | if (can_open_delegated(delegation, data->o_arg.fmode, claim)) |
652f89f6 | 2448 | goto unlock_no_action; |
aac00a8d TM |
2449 | rcu_read_unlock(); |
2450 | } | |
95b72eb0 | 2451 | /* Update client id. */ |
549b19cc | 2452 | data->o_arg.clientid = clp->cl_clientid; |
2a606188 TM |
2453 | switch (claim) { |
2454 | default: | |
2455 | break; | |
8188df17 TM |
2456 | case NFS4_OPEN_CLAIM_PREVIOUS: |
2457 | case NFS4_OPEN_CLAIM_DELEG_CUR_FH: | |
2458 | case NFS4_OPEN_CLAIM_DELEG_PREV_FH: | |
e23008ec | 2459 | data->o_arg.open_bitmap = &nfs4_open_noattr_bitmap[0]; |
df561f66 | 2460 | fallthrough; |
8188df17 TM |
2461 | case NFS4_OPEN_CLAIM_FH: |
2462 | task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_NOATTR]; | |
6f220ed5 | 2463 | } |
26e976a8 | 2464 | data->timestamp = jiffies; |
42e1cca7 | 2465 | if (nfs4_setup_sequence(data->o_arg.server->nfs_client, |
d898528c | 2466 | &data->o_arg.seq_args, |
2240a9e2 TM |
2467 | &data->o_res.seq_res, |
2468 | task) != 0) | |
2469 | nfs_release_seqid(data->o_arg.seqid); | |
549b19cc TM |
2470 | |
2471 | /* Set the create mode (note dependency on the session type) */ | |
2472 | data->o_arg.createmode = NFS4_CREATE_UNCHECKED; | |
2473 | if (data->o_arg.open_flags & O_EXCL) { | |
2474 | data->o_arg.createmode = NFS4_CREATE_EXCLUSIVE; | |
2475 | if (nfs4_has_persistent_session(clp)) | |
2476 | data->o_arg.createmode = NFS4_CREATE_GUARDED; | |
2477 | else if (clp->cl_mvops->minor_version > 0) | |
2478 | data->o_arg.createmode = NFS4_CREATE_EXCLUSIVE4_1; | |
2479 | } | |
6ee41268 | 2480 | return; |
652f89f6 | 2481 | unlock_no_action: |
9759b0fb | 2482 | trace_nfs4_cached_open(data->state); |
652f89f6 | 2483 | rcu_read_unlock(); |
6ee41268 TM |
2484 | out_no_action: |
2485 | task->tk_action = NULL; | |
c8da19b9 | 2486 | out_wait: |
b75ad4cd | 2487 | nfs4_sequence_done(task, &data->o_res.seq_res); |
b257957e AB |
2488 | } |
2489 | ||
24ac23ab TM |
2490 | static void nfs4_open_done(struct rpc_task *task, void *calldata) |
2491 | { | |
2492 | struct nfs4_opendata *data = calldata; | |
1da177e4 | 2493 | |
24ac23ab | 2494 | data->rpc_status = task->tk_status; |
d898528c | 2495 | |
2e80dbe7 | 2496 | if (!nfs4_sequence_process(task, &data->o_res.seq_res)) |
14516c3a | 2497 | return; |
d898528c | 2498 | |
24ac23ab | 2499 | if (task->tk_status == 0) { |
807d66d8 TM |
2500 | if (data->o_res.f_attr->valid & NFS_ATTR_FATTR_TYPE) { |
2501 | switch (data->o_res.f_attr->mode & S_IFMT) { | |
6f926b5b TM |
2502 | case S_IFREG: |
2503 | break; | |
2504 | case S_IFLNK: | |
24ac23ab | 2505 | data->rpc_status = -ELOOP; |
6f926b5b TM |
2506 | break; |
2507 | case S_IFDIR: | |
24ac23ab | 2508 | data->rpc_status = -EISDIR; |
6f926b5b TM |
2509 | break; |
2510 | default: | |
24ac23ab | 2511 | data->rpc_status = -ENOTDIR; |
807d66d8 | 2512 | } |
6f926b5b | 2513 | } |
26e976a8 | 2514 | renew_lease(data->o_res.server, data->timestamp); |
0f9f95e0 TM |
2515 | if (!(data->o_res.rflags & NFS4_OPEN_RESULT_CONFIRM)) |
2516 | nfs_confirm_seqid(&data->owner->so_seqid, 0); | |
6f926b5b | 2517 | } |
a7a3b1e9 | 2518 | data->rpc_done = true; |
24ac23ab | 2519 | } |
6f926b5b | 2520 | |
24ac23ab TM |
2521 | static void nfs4_open_release(void *calldata) |
2522 | { | |
2523 | struct nfs4_opendata *data = calldata; | |
2524 | struct nfs4_state *state = NULL; | |
2525 | ||
2526 | /* If this request hasn't been cancelled, do nothing */ | |
a7a3b1e9 | 2527 | if (!data->cancelled) |
24ac23ab TM |
2528 | goto out_free; |
2529 | /* In case of error, no cleanup! */ | |
3e309914 | 2530 | if (data->rpc_status != 0 || !data->rpc_done) |
24ac23ab TM |
2531 | goto out_free; |
2532 | /* In case we need an open_confirm, no cleanup! */ | |
2533 | if (data->o_res.rflags & NFS4_OPEN_RESULT_CONFIRM) | |
2534 | goto out_free; | |
24ac23ab | 2535 | state = nfs4_opendata_to_nfs4_state(data); |
1b370bc2 | 2536 | if (!IS_ERR(state)) |
643168c2 | 2537 | nfs4_close_state(state, data->o_arg.fmode); |
24ac23ab | 2538 | out_free: |
c6d00e63 | 2539 | nfs4_opendata_put(data); |
24ac23ab TM |
2540 | } |
2541 | ||
2542 | static const struct rpc_call_ops nfs4_open_ops = { | |
2543 | .rpc_call_prepare = nfs4_open_prepare, | |
2544 | .rpc_call_done = nfs4_open_done, | |
2545 | .rpc_release = nfs4_open_release, | |
2546 | }; | |
2547 | ||
3b65a30d FI |
2548 | static int nfs4_run_open_task(struct nfs4_opendata *data, |
2549 | struct nfs_open_context *ctx) | |
24ac23ab | 2550 | { |
2b0143b5 | 2551 | struct inode *dir = d_inode(data->dir); |
24ac23ab TM |
2552 | struct nfs_server *server = NFS_SERVER(dir); |
2553 | struct nfs_openargs *o_arg = &data->o_arg; | |
2554 | struct nfs_openres *o_res = &data->o_res; | |
2555 | struct rpc_task *task; | |
5138fde0 TM |
2556 | struct rpc_message msg = { |
2557 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN], | |
2558 | .rpc_argp = o_arg, | |
2559 | .rpc_resp = o_res, | |
2560 | .rpc_cred = data->owner->so_cred, | |
2561 | }; | |
c970aa85 TM |
2562 | struct rpc_task_setup task_setup_data = { |
2563 | .rpc_client = server->client, | |
5138fde0 | 2564 | .rpc_message = &msg, |
c970aa85 TM |
2565 | .callback_ops = &nfs4_open_ops, |
2566 | .callback_data = data, | |
101070ca | 2567 | .workqueue = nfsiod_workqueue, |
61296507 | 2568 | .flags = RPC_TASK_ASYNC | RPC_TASK_CRED_NOREF, |
c970aa85 | 2569 | }; |
24ac23ab TM |
2570 | int status; |
2571 | ||
c6d00e63 | 2572 | kref_get(&data->kref); |
a7a3b1e9 | 2573 | data->rpc_done = false; |
3e309914 | 2574 | data->rpc_status = 0; |
a7a3b1e9 BC |
2575 | data->cancelled = false; |
2576 | data->is_recover = false; | |
3b65a30d FI |
2577 | if (!ctx) { |
2578 | nfs4_init_sequence(&o_arg->seq_args, &o_res->seq_res, 1, 1); | |
a7a3b1e9 | 2579 | data->is_recover = true; |
67e7b52d | 2580 | task_setup_data.flags |= RPC_TASK_TIMEOUT; |
2409a976 | 2581 | } else { |
3b65a30d | 2582 | nfs4_init_sequence(&o_arg->seq_args, &o_res->seq_res, 1, 0); |
2409a976 FI |
2583 | pnfs_lgopen_prepare(data, ctx); |
2584 | } | |
c970aa85 | 2585 | task = rpc_run_task(&task_setup_data); |
d9b67e1e AS |
2586 | if (IS_ERR(task)) |
2587 | return PTR_ERR(task); | |
820bf85c | 2588 | status = rpc_wait_for_completion_task(task); |
d9b67e1e | 2589 | if (status != 0) { |
a7a3b1e9 | 2590 | data->cancelled = true; |
d9b67e1e AS |
2591 | smp_wmb(); |
2592 | } else | |
2593 | status = data->rpc_status; | |
2594 | rpc_put_task(task); | |
b257957e AB |
2595 | |
2596 | return status; | |
2597 | } | |
2598 | ||
2599 | static int _nfs4_recover_proc_open(struct nfs4_opendata *data) | |
2600 | { | |
2b0143b5 | 2601 | struct inode *dir = d_inode(data->dir); |
b257957e | 2602 | struct nfs_openres *o_res = &data->o_res; |
d9b67e1e | 2603 | int status; |
b257957e | 2604 | |
3b65a30d | 2605 | status = nfs4_run_open_task(data, NULL); |
b257957e AB |
2606 | if (status != 0 || !data->rpc_done) |
2607 | return status; | |
2608 | ||
6926afd1 TM |
2609 | nfs_fattr_map_and_free_names(NFS_SERVER(dir), &data->f_attr); |
2610 | ||
d7e98258 | 2611 | if (o_res->rflags & NFS4_OPEN_RESULT_CONFIRM) |
b257957e | 2612 | status = _nfs4_proc_open_confirm(data); |
b257957e AB |
2613 | |
2614 | return status; | |
2615 | } | |
2616 | ||
f3792d63 TM |
2617 | /* |
2618 | * Additional permission checks in order to distinguish between an | |
2619 | * open for read, and an open for execute. This works around the | |
2620 | * fact that NFSv4 OPEN treats read and execute permissions as being | |
2621 | * the same. | |
2622 | * Note that in the non-execute case, we want to turn off permission | |
2623 | * checking if we just created a new file (POSIX open() semantics). | |
2624 | */ | |
a52458b4 | 2625 | static int nfs4_opendata_access(const struct cred *cred, |
6168f62c | 2626 | struct nfs4_opendata *opendata, |
f8d9a897 WAA |
2627 | struct nfs4_state *state, fmode_t fmode, |
2628 | int openflags) | |
6168f62c WAA |
2629 | { |
2630 | struct nfs_access_entry cache; | |
1e6f2095 | 2631 | u32 mask, flags; |
6168f62c WAA |
2632 | |
2633 | /* access call failed or for some reason the server doesn't | |
2634 | * support any access modes -- defer access call until later */ | |
2635 | if (opendata->o_res.access_supported == 0) | |
2636 | return 0; | |
2637 | ||
2638 | mask = 0; | |
f3792d63 TM |
2639 | /* |
2640 | * Use openflags to check for exec, because fmode won't | |
2641 | * always have FMODE_EXEC set when file open for exec. | |
2642 | */ | |
f8d9a897 WAA |
2643 | if (openflags & __FMODE_EXEC) { |
2644 | /* ONLY check for exec rights */ | |
1e6f2095 AS |
2645 | if (S_ISDIR(state->inode->i_mode)) |
2646 | mask = NFS4_ACCESS_LOOKUP; | |
2647 | else | |
2648 | mask = NFS4_ACCESS_EXECUTE; | |
f3792d63 | 2649 | } else if ((fmode & FMODE_READ) && !opendata->file_created) |
1e6f2095 | 2650 | mask = NFS4_ACCESS_READ; |
6168f62c WAA |
2651 | |
2652 | cache.cred = cred; | |
6168f62c WAA |
2653 | nfs_access_set_mask(&cache, opendata->o_res.access_result); |
2654 | nfs_access_add_cache(state->inode, &cache); | |
2655 | ||
1e6f2095 AS |
2656 | flags = NFS4_ACCESS_READ | NFS4_ACCESS_EXECUTE | NFS4_ACCESS_LOOKUP; |
2657 | if ((mask & ~cache.mask & flags) == 0) | |
6168f62c WAA |
2658 | return 0; |
2659 | ||
998f40b5 | 2660 | return -EACCES; |
6168f62c WAA |
2661 | } |
2662 | ||
b257957e AB |
2663 | /* |
2664 | * Note: On error, nfs4_proc_open will free the struct nfs4_opendata | |
2665 | */ | |
3b65a30d FI |
2666 | static int _nfs4_proc_open(struct nfs4_opendata *data, |
2667 | struct nfs_open_context *ctx) | |
b257957e | 2668 | { |
2b0143b5 | 2669 | struct inode *dir = d_inode(data->dir); |
b257957e AB |
2670 | struct nfs_server *server = NFS_SERVER(dir); |
2671 | struct nfs_openargs *o_arg = &data->o_arg; | |
2672 | struct nfs_openres *o_res = &data->o_res; | |
2673 | int status; | |
2674 | ||
3b65a30d | 2675 | status = nfs4_run_open_task(data, ctx); |
08ef7bd3 TM |
2676 | if (!data->rpc_done) |
2677 | return status; | |
2678 | if (status != 0) { | |
2679 | if (status == -NFS4ERR_BADNAME && | |
2680 | !(o_arg->open_flags & O_CREAT)) | |
2681 | return -ENOENT; | |
24ac23ab | 2682 | return status; |
08ef7bd3 | 2683 | } |
24ac23ab | 2684 | |
6926afd1 TM |
2685 | nfs_fattr_map_and_free_names(server, &data->f_attr); |
2686 | ||
5bc2afc2 | 2687 | if (o_arg->open_flags & O_CREAT) { |
5bc2afc2 | 2688 | if (o_arg->open_flags & O_EXCL) |
a7a3b1e9 | 2689 | data->file_created = true; |
5bc2afc2 | 2690 | else if (o_res->cinfo.before != o_res->cinfo.after) |
a7a3b1e9 | 2691 | data->file_created = true; |
1eb5d98f JL |
2692 | if (data->file_created || |
2693 | inode_peek_iversion_raw(dir) != o_res->cinfo.after) | |
1b523ca9 FL |
2694 | nfs4_update_changeattr(dir, &o_res->cinfo, |
2695 | o_res->f_attr->time_start, | |
2696 | NFS_INO_INVALID_DATA); | |
5bc2afc2 | 2697 | } |
0df5dd4a TM |
2698 | if ((o_res->rflags & NFS4_OPEN_RESULT_LOCKTYPE_POSIX) == 0) |
2699 | server->caps &= ~NFS_CAP_POSIX_LOCK; | |
1da177e4 | 2700 | if(o_res->rflags & NFS4_OPEN_RESULT_CONFIRM) { |
cdd4e68b | 2701 | status = _nfs4_proc_open_confirm(data); |
1da177e4 | 2702 | if (status != 0) |
24ac23ab | 2703 | return status; |
1da177e4 | 2704 | } |
56e0d71e TM |
2705 | if (!(o_res->f_attr->valid & NFS_ATTR_FATTR)) { |
2706 | nfs4_sequence_free_slot(&o_res->seq_res); | |
a841b54d TM |
2707 | nfs4_proc_getattr(server, &o_res->fh, o_res->f_attr, |
2708 | o_res->f_label, NULL); | |
56e0d71e | 2709 | } |
24ac23ab | 2710 | return 0; |
1da177e4 LT |
2711 | } |
2712 | ||
1da177e4 LT |
2713 | /* |
2714 | * OPEN_EXPIRED: | |
2715 | * reclaim state on the server after a network partition. | |
2716 | * Assumes caller holds the appropriate lock | |
2717 | */ | |
539cd03a | 2718 | static int _nfs4_open_expired(struct nfs_open_context *ctx, struct nfs4_state *state) |
1da177e4 | 2719 | { |
e56e0b78 | 2720 | struct nfs4_opendata *opendata; |
864472e9 | 2721 | int ret; |
1da177e4 | 2722 | |
4a1c0893 | 2723 | opendata = nfs4_open_recoverdata_alloc(ctx, state, |
49f9a0fa | 2724 | NFS4_OPEN_CLAIM_FH); |
6f220ed5 TM |
2725 | if (IS_ERR(opendata)) |
2726 | return PTR_ERR(opendata); | |
864472e9 | 2727 | ret = nfs4_open_recover(opendata, state); |
35d05778 | 2728 | if (ret == -ESTALE) |
3d4ff43d | 2729 | d_drop(ctx->dentry); |
c6d00e63 | 2730 | nfs4_opendata_put(opendata); |
864472e9 | 2731 | return ret; |
1da177e4 LT |
2732 | } |
2733 | ||
a9ed2e25 | 2734 | static int nfs4_do_open_expired(struct nfs_open_context *ctx, struct nfs4_state *state) |
202b50dc | 2735 | { |
539cd03a | 2736 | struct nfs_server *server = NFS_SERVER(state->inode); |
202b50dc TM |
2737 | struct nfs4_exception exception = { }; |
2738 | int err; | |
2739 | ||
2740 | do { | |
539cd03a | 2741 | err = _nfs4_open_expired(ctx, state); |
42113a75 | 2742 | trace_nfs4_open_expired(ctx, 0, err); |
49f9a0fa TM |
2743 | if (nfs4_clear_cap_atomic_open_v1(server, err, &exception)) |
2744 | continue; | |
a9ed2e25 TM |
2745 | switch (err) { |
2746 | default: | |
2747 | goto out; | |
2748 | case -NFS4ERR_GRACE: | |
2749 | case -NFS4ERR_DELAY: | |
2750 | nfs4_handle_exception(server, err, &exception); | |
2751 | err = 0; | |
2752 | } | |
202b50dc | 2753 | } while (exception.retry); |
a9ed2e25 | 2754 | out: |
202b50dc TM |
2755 | return err; |
2756 | } | |
2757 | ||
1da177e4 LT |
2758 | static int nfs4_open_expired(struct nfs4_state_owner *sp, struct nfs4_state *state) |
2759 | { | |
1da177e4 | 2760 | struct nfs_open_context *ctx; |
864472e9 | 2761 | int ret; |
1da177e4 | 2762 | |
864472e9 TM |
2763 | ctx = nfs4_state_find_open_context(state); |
2764 | if (IS_ERR(ctx)) | |
91876b13 | 2765 | return -EAGAIN; |
539cd03a | 2766 | ret = nfs4_do_open_expired(ctx, state); |
864472e9 TM |
2767 | put_nfs_open_context(ctx); |
2768 | return ret; | |
1da177e4 LT |
2769 | } |
2770 | ||
41020b67 TM |
2771 | static void nfs_finish_clear_delegation_stateid(struct nfs4_state *state, |
2772 | const nfs4_stateid *stateid) | |
4dfd4f7a | 2773 | { |
41020b67 | 2774 | nfs_remove_bad_delegation(state->inode, stateid); |
9f0c5124 | 2775 | nfs_state_clear_delegation(state); |
4dfd4f7a TM |
2776 | } |
2777 | ||
2778 | static void nfs40_clear_delegation_stateid(struct nfs4_state *state) | |
2779 | { | |
2780 | if (rcu_access_pointer(NFS_I(state->inode)->delegation) != NULL) | |
41020b67 | 2781 | nfs_finish_clear_delegation_stateid(state, NULL); |
4dfd4f7a TM |
2782 | } |
2783 | ||
2784 | static int nfs40_open_expired(struct nfs4_state_owner *sp, struct nfs4_state *state) | |
2785 | { | |
2786 | /* NFSv4.0 doesn't allow for delegation recovery on open expire */ | |
2787 | nfs40_clear_delegation_stateid(state); | |
27a30cf6 | 2788 | nfs_state_clear_open_state_flags(state); |
4dfd4f7a TM |
2789 | return nfs4_open_expired(sp, state); |
2790 | } | |
2791 | ||
45870d69 TM |
2792 | static int nfs40_test_and_free_expired_stateid(struct nfs_server *server, |
2793 | nfs4_stateid *stateid, | |
a52458b4 | 2794 | const struct cred *cred) |
45870d69 TM |
2795 | { |
2796 | return -NFS4ERR_BAD_STATEID; | |
2797 | } | |
2798 | ||
f062eb6c | 2799 | #if defined(CONFIG_NFS_V4_1) |
4586f6e2 TM |
2800 | static int nfs41_test_and_free_expired_stateid(struct nfs_server *server, |
2801 | nfs4_stateid *stateid, | |
a52458b4 | 2802 | const struct cred *cred) |
4586f6e2 TM |
2803 | { |
2804 | int status; | |
2805 | ||
f7a62ada TM |
2806 | switch (stateid->type) { |
2807 | default: | |
2808 | break; | |
2809 | case NFS4_INVALID_STATEID_TYPE: | |
2810 | case NFS4_SPECIAL_STATEID_TYPE: | |
2811 | return -NFS4ERR_BAD_STATEID; | |
2812 | case NFS4_REVOKED_STATEID_TYPE: | |
2813 | goto out_free; | |
2814 | } | |
4586f6e2 | 2815 | |
f7a62ada | 2816 | status = nfs41_test_stateid(server, stateid, cred); |
4586f6e2 TM |
2817 | switch (status) { |
2818 | case -NFS4ERR_EXPIRED: | |
2819 | case -NFS4ERR_ADMIN_REVOKED: | |
2820 | case -NFS4ERR_DELEG_REVOKED: | |
f7a62ada TM |
2821 | break; |
2822 | default: | |
4586f6e2 TM |
2823 | return status; |
2824 | } | |
f7a62ada TM |
2825 | out_free: |
2826 | /* Ack the revoked state to the server */ | |
f0b0bf88 | 2827 | nfs41_free_stateid(server, stateid, cred, true); |
f7a62ada | 2828 | return -NFS4ERR_EXPIRED; |
4586f6e2 TM |
2829 | } |
2830 | ||
27a30cf6 | 2831 | static int nfs41_check_delegation_stateid(struct nfs4_state *state) |
f062eb6c | 2832 | { |
f062eb6c | 2833 | struct nfs_server *server = NFS_SERVER(state->inode); |
0c116cad | 2834 | nfs4_stateid stateid; |
ab7cb0df | 2835 | struct nfs_delegation *delegation; |
a52458b4 | 2836 | const struct cred *cred = NULL; |
27a30cf6 | 2837 | int status, ret = NFS_OK; |
3e60ffdd | 2838 | |
ab7cb0df TM |
2839 | /* Get the delegation credential for use by test/free_stateid */ |
2840 | rcu_read_lock(); | |
2841 | delegation = rcu_dereference(NFS_I(state->inode)->delegation); | |
0c116cad | 2842 | if (delegation == NULL) { |
ab7cb0df | 2843 | rcu_read_unlock(); |
9f0c5124 | 2844 | nfs_state_clear_delegation(state); |
27a30cf6 | 2845 | return NFS_OK; |
0c116cad TM |
2846 | } |
2847 | ||
fc51b1cf | 2848 | spin_lock(&delegation->lock); |
0c116cad | 2849 | nfs4_stateid_copy(&stateid, &delegation->stateid); |
0c116cad | 2850 | |
994b15b9 TM |
2851 | if (!test_and_clear_bit(NFS_DELEGATION_TEST_EXPIRED, |
2852 | &delegation->flags)) { | |
fc51b1cf | 2853 | spin_unlock(&delegation->lock); |
4c8e5447 | 2854 | rcu_read_unlock(); |
27a30cf6 | 2855 | return NFS_OK; |
4c8e5447 | 2856 | } |
0c116cad | 2857 | |
a52458b4 N |
2858 | if (delegation->cred) |
2859 | cred = get_cred(delegation->cred); | |
fc51b1cf | 2860 | spin_unlock(&delegation->lock); |
0c116cad | 2861 | rcu_read_unlock(); |
4586f6e2 | 2862 | status = nfs41_test_and_free_expired_stateid(server, &stateid, cred); |
0c116cad | 2863 | trace_nfs4_test_delegation_stateid(state, NULL, status); |
f7a62ada | 2864 | if (status == -NFS4ERR_EXPIRED || status == -NFS4ERR_BAD_STATEID) |
41020b67 | 2865 | nfs_finish_clear_delegation_stateid(state, &stateid); |
27a30cf6 TM |
2866 | else |
2867 | ret = status; | |
ab7cb0df | 2868 | |
8c39a39e | 2869 | put_cred(cred); |
27a30cf6 TM |
2870 | return ret; |
2871 | } | |
2872 | ||
2873 | static void nfs41_delegation_recover_stateid(struct nfs4_state *state) | |
2874 | { | |
2875 | nfs4_stateid tmp; | |
2876 | ||
2877 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) && | |
2878 | nfs4_copy_delegation_stateid(state->inode, state->state, | |
2879 | &tmp, NULL) && | |
2880 | nfs4_stateid_match_other(&state->stateid, &tmp)) | |
2881 | nfs_state_set_delegation(state, &tmp, state->state); | |
2882 | else | |
2883 | nfs_state_clear_delegation(state); | |
3e60ffdd CL |
2884 | } |
2885 | ||
c5896fc8 TM |
2886 | /** |
2887 | * nfs41_check_expired_locks - possibly free a lock stateid | |
2888 | * | |
2889 | * @state: NFSv4 state for an inode | |
2890 | * | |
2891 | * Returns NFS_OK if recovery for this stateid is now finished. | |
2892 | * Otherwise a negative NFS4ERR value is returned. | |
2893 | */ | |
2894 | static int nfs41_check_expired_locks(struct nfs4_state *state) | |
2895 | { | |
2896 | int status, ret = NFS_OK; | |
d75a6a0e | 2897 | struct nfs4_lock_state *lsp, *prev = NULL; |
c5896fc8 TM |
2898 | struct nfs_server *server = NFS_SERVER(state->inode); |
2899 | ||
2900 | if (!test_bit(LK_STATE_IN_USE, &state->flags)) | |
2901 | goto out; | |
d75a6a0e BC |
2902 | |
2903 | spin_lock(&state->state_lock); | |
c5896fc8 TM |
2904 | list_for_each_entry(lsp, &state->lock_states, ls_locks) { |
2905 | if (test_bit(NFS_LOCK_INITIALIZED, &lsp->ls_flags)) { | |
a52458b4 | 2906 | const struct cred *cred = lsp->ls_state->owner->so_cred; |
c5896fc8 | 2907 | |
194bc1f4 | 2908 | refcount_inc(&lsp->ls_count); |
d75a6a0e BC |
2909 | spin_unlock(&state->state_lock); |
2910 | ||
2911 | nfs4_put_lock_state(prev); | |
2912 | prev = lsp; | |
2913 | ||
c5896fc8 TM |
2914 | status = nfs41_test_and_free_expired_stateid(server, |
2915 | &lsp->ls_stateid, | |
2916 | cred); | |
2917 | trace_nfs4_test_lock_stateid(state, lsp, status); | |
2918 | if (status == -NFS4ERR_EXPIRED || | |
2919 | status == -NFS4ERR_BAD_STATEID) { | |
2920 | clear_bit(NFS_LOCK_INITIALIZED, &lsp->ls_flags); | |
67dd4830 | 2921 | lsp->ls_stateid.type = NFS4_INVALID_STATEID_TYPE; |
c5896fc8 TM |
2922 | if (!recover_lost_locks) |
2923 | set_bit(NFS_LOCK_LOST, &lsp->ls_flags); | |
2924 | } else if (status != NFS_OK) { | |
2925 | ret = status; | |
d75a6a0e BC |
2926 | nfs4_put_lock_state(prev); |
2927 | goto out; | |
c5896fc8 | 2928 | } |
d75a6a0e | 2929 | spin_lock(&state->state_lock); |
c5896fc8 | 2930 | } |
d75a6a0e BC |
2931 | } |
2932 | spin_unlock(&state->state_lock); | |
2933 | nfs4_put_lock_state(prev); | |
c5896fc8 TM |
2934 | out: |
2935 | return ret; | |
2936 | } | |
2937 | ||
3e60ffdd CL |
2938 | /** |
2939 | * nfs41_check_open_stateid - possibly free an open stateid | |
2940 | * | |
2941 | * @state: NFSv4 state for an inode | |
2942 | * | |
2943 | * Returns NFS_OK if recovery for this stateid is now finished. | |
2944 | * Otherwise a negative NFS4ERR value is returned. | |
2945 | */ | |
2946 | static int nfs41_check_open_stateid(struct nfs4_state *state) | |
2947 | { | |
2948 | struct nfs_server *server = NFS_SERVER(state->inode); | |
fcb6d9c6 | 2949 | nfs4_stateid *stateid = &state->open_stateid; |
a52458b4 | 2950 | const struct cred *cred = state->owner->so_cred; |
3e60ffdd CL |
2951 | int status; |
2952 | ||
27a30cf6 | 2953 | if (test_bit(NFS_OPEN_STATE, &state->flags) == 0) |
3e60ffdd | 2954 | return -NFS4ERR_BAD_STATEID; |
4586f6e2 | 2955 | status = nfs41_test_and_free_expired_stateid(server, stateid, cred); |
08cb47fa | 2956 | trace_nfs4_test_open_stateid(state, NULL, status); |
f7a62ada | 2957 | if (status == -NFS4ERR_EXPIRED || status == -NFS4ERR_BAD_STATEID) { |
27a30cf6 | 2958 | nfs_state_clear_open_state_flags(state); |
67dd4830 | 2959 | stateid->type = NFS4_INVALID_STATEID_TYPE; |
8a64c4ef | 2960 | return status; |
c0ca0e59 | 2961 | } |
8a64c4ef TM |
2962 | if (nfs_open_stateid_recover_openmode(state)) |
2963 | return -NFS4ERR_OPENMODE; | |
2964 | return NFS_OK; | |
b01dd1d8 BS |
2965 | } |
2966 | ||
2967 | static int nfs41_open_expired(struct nfs4_state_owner *sp, struct nfs4_state *state) | |
2968 | { | |
eb64cf96 | 2969 | int status; |
b01dd1d8 | 2970 | |
27a30cf6 TM |
2971 | status = nfs41_check_delegation_stateid(state); |
2972 | if (status != NFS_OK) | |
2973 | return status; | |
2974 | nfs41_delegation_recover_stateid(state); | |
2975 | ||
c5896fc8 TM |
2976 | status = nfs41_check_expired_locks(state); |
2977 | if (status != NFS_OK) | |
2978 | return status; | |
3e60ffdd | 2979 | status = nfs41_check_open_stateid(state); |
eb64cf96 CL |
2980 | if (status != NFS_OK) |
2981 | status = nfs4_open_expired(sp, state); | |
2982 | return status; | |
f062eb6c BS |
2983 | } |
2984 | #endif | |
2985 | ||
aa53ed54 JL |
2986 | /* |
2987 | * on an EXCLUSIVE create, the server should send back a bitmask with FATTR4-* | |
2988 | * fields corresponding to attributes that were used to store the verifier. | |
2989 | * Make sure we clobber those fields in the later setattr call | |
2990 | */ | |
609339c1 | 2991 | static unsigned nfs4_exclusive_attrset(struct nfs4_opendata *opendata, |
5334c5bd | 2992 | struct iattr *sattr, struct nfs4_label **label) |
aa53ed54 | 2993 | { |
609339c1 TM |
2994 | const __u32 *bitmask = opendata->o_arg.server->exclcreat_bitmask; |
2995 | __u32 attrset[3]; | |
2996 | unsigned ret; | |
2997 | unsigned i; | |
5334c5bd | 2998 | |
609339c1 TM |
2999 | for (i = 0; i < ARRAY_SIZE(attrset); i++) { |
3000 | attrset[i] = opendata->o_res.attrset[i]; | |
3001 | if (opendata->o_arg.createmode == NFS4_CREATE_EXCLUSIVE4_1) | |
3002 | attrset[i] &= ~bitmask[i]; | |
3003 | } | |
3004 | ||
3005 | ret = (opendata->o_arg.createmode == NFS4_CREATE_EXCLUSIVE) ? | |
3006 | sattr->ia_valid : 0; | |
aa53ed54 | 3007 | |
609339c1 TM |
3008 | if ((attrset[1] & (FATTR4_WORD1_TIME_ACCESS|FATTR4_WORD1_TIME_ACCESS_SET))) { |
3009 | if (sattr->ia_valid & ATTR_ATIME_SET) | |
3010 | ret |= ATTR_ATIME_SET; | |
3011 | else | |
3012 | ret |= ATTR_ATIME; | |
3013 | } | |
5334c5bd | 3014 | |
609339c1 TM |
3015 | if ((attrset[1] & (FATTR4_WORD1_TIME_MODIFY|FATTR4_WORD1_TIME_MODIFY_SET))) { |
3016 | if (sattr->ia_valid & ATTR_MTIME_SET) | |
3017 | ret |= ATTR_MTIME_SET; | |
3018 | else | |
3019 | ret |= ATTR_MTIME; | |
3020 | } | |
5334c5bd | 3021 | |
609339c1 | 3022 | if (!(attrset[2] & FATTR4_WORD2_SECURITY_LABEL)) |
5334c5bd | 3023 | *label = NULL; |
609339c1 | 3024 | return ret; |
aa53ed54 JL |
3025 | } |
3026 | ||
c21443c2 | 3027 | static int _nfs4_open_and_get_state(struct nfs4_opendata *opendata, |
1bf85d8c | 3028 | int flags, struct nfs_open_context *ctx) |
c21443c2 TM |
3029 | { |
3030 | struct nfs4_state_owner *sp = opendata->owner; | |
3031 | struct nfs_server *server = sp->so_server; | |
275bb307 | 3032 | struct dentry *dentry; |
c21443c2 | 3033 | struct nfs4_state *state; |
1bf85d8c | 3034 | fmode_t acc_mode = _nfs4_ctx_to_accessmode(ctx); |
cf5b4059 TM |
3035 | struct inode *dir = d_inode(opendata->dir); |
3036 | unsigned long dir_verifier; | |
c21443c2 TM |
3037 | unsigned int seq; |
3038 | int ret; | |
3039 | ||
3040 | seq = raw_seqcount_begin(&sp->so_reclaim_seqcount); | |
cf5b4059 | 3041 | dir_verifier = nfs_save_change_attribute(dir); |
c21443c2 | 3042 | |
3b65a30d | 3043 | ret = _nfs4_proc_open(opendata, ctx); |
dca78001 | 3044 | if (ret != 0) |
c21443c2 TM |
3045 | goto out; |
3046 | ||
ae55e59d | 3047 | state = _nfs4_opendata_to_nfs4_state(opendata); |
c21443c2 TM |
3048 | ret = PTR_ERR(state); |
3049 | if (IS_ERR(state)) | |
3050 | goto out; | |
a974deee | 3051 | ctx->state = state; |
c21443c2 TM |
3052 | if (server->caps & NFS_CAP_POSIX_LOCK) |
3053 | set_bit(NFS_STATE_POSIX_LOCKS, &state->flags); | |
a8ce377a JL |
3054 | if (opendata->o_res.rflags & NFS4_OPEN_RESULT_MAY_NOTIFY_LOCK) |
3055 | set_bit(NFS_STATE_MAY_NOTIFY_LOCK, &state->flags); | |
c21443c2 | 3056 | |
275bb307 | 3057 | dentry = opendata->dentry; |
2b0143b5 | 3058 | if (d_really_is_negative(dentry)) { |
668d0cd5 | 3059 | struct dentry *alias; |
275bb307 | 3060 | d_drop(dentry); |
668d0cd5 AV |
3061 | alias = d_exact_alias(dentry, state->inode); |
3062 | if (!alias) | |
3063 | alias = d_splice_alias(igrab(state->inode), dentry); | |
3064 | /* d_splice_alias() can't fail here - it's a non-directory */ | |
3065 | if (alias) { | |
275bb307 | 3066 | dput(ctx->dentry); |
668d0cd5 | 3067 | ctx->dentry = dentry = alias; |
275bb307 | 3068 | } |
cf5b4059 TM |
3069 | } |
3070 | ||
3071 | switch(opendata->o_arg.claim) { | |
3072 | default: | |
3073 | break; | |
3074 | case NFS4_OPEN_CLAIM_NULL: | |
3075 | case NFS4_OPEN_CLAIM_DELEGATE_CUR: | |
3076 | case NFS4_OPEN_CLAIM_DELEGATE_PREV: | |
3077 | if (!opendata->rpc_done) | |
3078 | break; | |
3079 | if (opendata->o_res.delegation_type != 0) | |
3080 | dir_verifier = nfs_save_change_attribute(dir); | |
3081 | nfs_set_verifier(dentry, dir_verifier); | |
275bb307 TM |
3082 | } |
3083 | ||
af9b6d75 TM |
3084 | /* Parse layoutget results before we check for access */ |
3085 | pnfs_parse_lgopen(state->inode, opendata->lgp, ctx); | |
3086 | ||
1bf85d8c TM |
3087 | ret = nfs4_opendata_access(sp->so_cred, opendata, state, |
3088 | acc_mode, flags); | |
c21443c2 TM |
3089 | if (ret != 0) |
3090 | goto out; | |
3091 | ||
2b0143b5 | 3092 | if (d_inode(dentry) == state->inode) { |
c45ffdd2 TM |
3093 | nfs_inode_attach_open_context(ctx); |
3094 | if (read_seqcount_retry(&sp->so_reclaim_seqcount, seq)) | |
3095 | nfs4_schedule_stateid_recovery(server, state); | |
3096 | } | |
2409a976 | 3097 | |
c21443c2 | 3098 | out: |
0cb98abb OK |
3099 | if (!opendata->cancelled) |
3100 | nfs4_sequence_free_slot(&opendata->o_res.seq_res); | |
c21443c2 TM |
3101 | return ret; |
3102 | } | |
3103 | ||
1da177e4 | 3104 | /* |
24ac23ab | 3105 | * Returns a referenced nfs4_state |
1da177e4 | 3106 | */ |
82be417a | 3107 | static int _nfs4_do_open(struct inode *dir, |
4197a055 | 3108 | struct nfs_open_context *ctx, |
82be417a | 3109 | int flags, |
8fd1ab74 | 3110 | const struct nfs4_open_createattrs *c, |
5bc2afc2 | 3111 | int *opened) |
1da177e4 LT |
3112 | { |
3113 | struct nfs4_state_owner *sp; | |
3114 | struct nfs4_state *state = NULL; | |
3115 | struct nfs_server *server = NFS_SERVER(dir); | |
e56e0b78 | 3116 | struct nfs4_opendata *opendata; |
4197a055 | 3117 | struct dentry *dentry = ctx->dentry; |
a52458b4 | 3118 | const struct cred *cred = ctx->cred; |
4197a055 | 3119 | struct nfs4_threshold **ctx_th = &ctx->mdsthreshold; |
1bf85d8c | 3120 | fmode_t fmode = _nfs4_ctx_to_openmode(ctx); |
49f9a0fa | 3121 | enum open_claim_type4 claim = NFS4_OPEN_CLAIM_NULL; |
8fd1ab74 TM |
3122 | struct iattr *sattr = c->sattr; |
3123 | struct nfs4_label *label = c->label; | |
1775fd3e | 3124 | struct nfs4_label *olabel = NULL; |
aac00a8d | 3125 | int status; |
1da177e4 LT |
3126 | |
3127 | /* Protect against reboot recovery conflicts */ | |
1da177e4 | 3128 | status = -ENOMEM; |
d1e284d5 TM |
3129 | sp = nfs4_get_state_owner(server, cred, GFP_KERNEL); |
3130 | if (sp == NULL) { | |
1da177e4 LT |
3131 | dprintk("nfs4_do_open: nfs4_get_state_owner failed!\n"); |
3132 | goto out_err; | |
3133 | } | |
334f87dd | 3134 | status = nfs4_client_recover_expired_lease(server->nfs_client); |
58d9714a | 3135 | if (status != 0) |
b4454fe1 | 3136 | goto err_put_state_owner; |
2b0143b5 DH |
3137 | if (d_really_is_positive(dentry)) |
3138 | nfs4_return_incompatible_delegation(d_inode(dentry), fmode); | |
58d9714a | 3139 | status = -ENOMEM; |
2b0143b5 | 3140 | if (d_really_is_positive(dentry)) |
49f9a0fa | 3141 | claim = NFS4_OPEN_CLAIM_FH; |
8fd1ab74 TM |
3142 | opendata = nfs4_opendata_alloc(dentry, sp, fmode, flags, |
3143 | c, claim, GFP_KERNEL); | |
e56e0b78 | 3144 | if (opendata == NULL) |
95d35cb4 | 3145 | goto err_put_state_owner; |
1da177e4 | 3146 | |
14c43f76 DQ |
3147 | if (label) { |
3148 | olabel = nfs4_label_alloc(server, GFP_KERNEL); | |
3149 | if (IS_ERR(olabel)) { | |
3150 | status = PTR_ERR(olabel); | |
3151 | goto err_opendata_put; | |
3152 | } | |
3153 | } | |
3154 | ||
e911b815 TM |
3155 | if (server->attr_bitmask[2] & FATTR4_WORD2_MDSTHRESHOLD) { |
3156 | if (!opendata->f_attr.mdsthreshold) { | |
3157 | opendata->f_attr.mdsthreshold = pnfs_mdsthreshold_alloc(); | |
3158 | if (!opendata->f_attr.mdsthreshold) | |
3159 | goto err_free_label; | |
3160 | } | |
1549210f | 3161 | opendata->o_arg.open_bitmap = &nfs4_pnfs_open_bitmap[0]; |
82be417a | 3162 | } |
2b0143b5 DH |
3163 | if (d_really_is_positive(dentry)) |
3164 | opendata->state = nfs4_get_open_state(d_inode(dentry), sp); | |
aac00a8d | 3165 | |
1bf85d8c | 3166 | status = _nfs4_open_and_get_state(opendata, flags, ctx); |
6168f62c | 3167 | if (status != 0) |
14c43f76 | 3168 | goto err_free_label; |
3efb9722 | 3169 | state = ctx->state; |
6168f62c | 3170 | |
efcbc04e | 3171 | if ((opendata->o_arg.open_flags & (O_CREAT|O_EXCL)) == (O_CREAT|O_EXCL) && |
549b19cc | 3172 | (opendata->o_arg.createmode != NFS4_CREATE_GUARDED)) { |
609339c1 | 3173 | unsigned attrs = nfs4_exclusive_attrset(opendata, sattr, &label); |
a1d1c4f1 TM |
3174 | /* |
3175 | * send create attributes which was not set by open | |
3176 | * with an extra setattr. | |
3177 | */ | |
609339c1 TM |
3178 | if (attrs || label) { |
3179 | unsigned ia_old = sattr->ia_valid; | |
3180 | ||
3181 | sattr->ia_valid = attrs; | |
a1d1c4f1 TM |
3182 | nfs_fattr_init(opendata->o_res.f_attr); |
3183 | status = nfs4_do_setattr(state->inode, cred, | |
3184 | opendata->o_res.f_attr, sattr, | |
29b59f94 | 3185 | ctx, label, olabel); |
a1d1c4f1 TM |
3186 | if (status == 0) { |
3187 | nfs_setattr_update_inode(state->inode, sattr, | |
3188 | opendata->o_res.f_attr); | |
3189 | nfs_setsecurity(state->inode, opendata->o_res.f_attr, olabel); | |
3190 | } | |
609339c1 | 3191 | sattr->ia_valid = ia_old; |
1775fd3e | 3192 | } |
0ab64e0e | 3193 | } |
c5c3fb5f | 3194 | if (opened && opendata->file_created) |
73a09dd9 | 3195 | *opened = 1; |
82be417a | 3196 | |
e911b815 | 3197 | if (pnfs_use_threshold(ctx_th, opendata->f_attr.mdsthreshold, server)) { |
82be417a | 3198 | *ctx_th = opendata->f_attr.mdsthreshold; |
e911b815 TM |
3199 | opendata->f_attr.mdsthreshold = NULL; |
3200 | } | |
82be417a | 3201 | |
14c43f76 DQ |
3202 | nfs4_label_free(olabel); |
3203 | ||
c6d00e63 | 3204 | nfs4_opendata_put(opendata); |
1da177e4 | 3205 | nfs4_put_state_owner(sp); |
1da177e4 | 3206 | return 0; |
14c43f76 DQ |
3207 | err_free_label: |
3208 | nfs4_label_free(olabel); | |
c6d00e63 TM |
3209 | err_opendata_put: |
3210 | nfs4_opendata_put(opendata); | |
e56e0b78 TM |
3211 | err_put_state_owner: |
3212 | nfs4_put_state_owner(sp); | |
1da177e4 | 3213 | out_err: |
1da177e4 LT |
3214 | return status; |
3215 | } | |
3216 | ||
3217 | ||
82be417a | 3218 | static struct nfs4_state *nfs4_do_open(struct inode *dir, |
4197a055 | 3219 | struct nfs_open_context *ctx, |
82be417a AA |
3220 | int flags, |
3221 | struct iattr *sattr, | |
5bc2afc2 TM |
3222 | struct nfs4_label *label, |
3223 | int *opened) | |
1da177e4 | 3224 | { |
49f9a0fa | 3225 | struct nfs_server *server = NFS_SERVER(dir); |
0688e64b TM |
3226 | struct nfs4_exception exception = { |
3227 | .interruptible = true, | |
3228 | }; | |
1da177e4 | 3229 | struct nfs4_state *res; |
8fd1ab74 TM |
3230 | struct nfs4_open_createattrs c = { |
3231 | .label = label, | |
3232 | .sattr = sattr, | |
3233 | .verf = { | |
3234 | [0] = (__u32)jiffies, | |
3235 | [1] = (__u32)current->pid, | |
3236 | }, | |
3237 | }; | |
1da177e4 LT |
3238 | int status; |
3239 | ||
3240 | do { | |
8fd1ab74 | 3241 | status = _nfs4_do_open(dir, ctx, flags, &c, opened); |
3efb9722 | 3242 | res = ctx->state; |
42113a75 | 3243 | trace_nfs4_open_file(ctx, flags, status); |
1da177e4 LT |
3244 | if (status == 0) |
3245 | break; | |
3246 | /* NOTE: BAD_SEQID means the server and client disagree about the | |
3247 | * book-keeping w.r.t. state-changing operations | |
3248 | * (OPEN/CLOSE/LOCK/LOCKU...) | |
3249 | * It is actually a sign of a bug on the client or on the server. | |
3250 | * | |
3251 | * If we receive a BAD_SEQID error in the particular case of | |
cee54fc9 | 3252 | * doing an OPEN, we assume that nfs_increment_open_seqid() will |
1da177e4 LT |
3253 | * have unhashed the old state_owner for us, and that we can |
3254 | * therefore safely retry using a new one. We should still warn | |
3255 | * the user though... | |
3256 | */ | |
3257 | if (status == -NFS4ERR_BAD_SEQID) { | |
9a3ba432 | 3258 | pr_warn_ratelimited("NFS: v4 server %s " |
6f43ddcc TM |
3259 | " returned a bad sequence-id error!\n", |
3260 | NFS_SERVER(dir)->nfs_client->cl_hostname); | |
1da177e4 LT |
3261 | exception.retry = 1; |
3262 | continue; | |
3263 | } | |
550f5747 TM |
3264 | /* |
3265 | * BAD_STATEID on OPEN means that the server cancelled our | |
3266 | * state before it received the OPEN_CONFIRM. | |
3267 | * Recover by retrying the request as per the discussion | |
3268 | * on Page 181 of RFC3530. | |
3269 | */ | |
3270 | if (status == -NFS4ERR_BAD_STATEID) { | |
3271 | exception.retry = 1; | |
3272 | continue; | |
3273 | } | |
924491f2 RM |
3274 | if (status == -NFS4ERR_EXPIRED) { |
3275 | nfs4_schedule_lease_recovery(server->nfs_client); | |
3276 | exception.retry = 1; | |
3277 | continue; | |
3278 | } | |
aac00a8d TM |
3279 | if (status == -EAGAIN) { |
3280 | /* We must have found a delegation */ | |
3281 | exception.retry = 1; | |
3282 | continue; | |
3283 | } | |
49f9a0fa TM |
3284 | if (nfs4_clear_cap_atomic_open_v1(server, status, &exception)) |
3285 | continue; | |
3286 | res = ERR_PTR(nfs4_handle_exception(server, | |
1da177e4 LT |
3287 | status, &exception)); |
3288 | } while (exception.retry); | |
3289 | return res; | |
3290 | } | |
3291 | ||
8487c479 TM |
3292 | static int _nfs4_do_setattr(struct inode *inode, |
3293 | struct nfs_setattrargs *arg, | |
3294 | struct nfs_setattrres *res, | |
a52458b4 | 3295 | const struct cred *cred, |
29b59f94 | 3296 | struct nfs_open_context *ctx) |
1da177e4 | 3297 | { |
3e4f6290 | 3298 | struct nfs_server *server = NFS_SERVER(inode); |
d9b67e1e | 3299 | struct rpc_message msg = { |
659bfcd6 | 3300 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETATTR], |
8487c479 TM |
3301 | .rpc_argp = arg, |
3302 | .rpc_resp = res, | |
659bfcd6 | 3303 | .rpc_cred = cred, |
d9b67e1e | 3304 | }; |
a52458b4 | 3305 | const struct cred *delegation_cred = NULL; |
26e976a8 | 3306 | unsigned long timestamp = jiffies; |
ee3ae84e | 3307 | bool truncate; |
65e4308d | 3308 | int status; |
1da177e4 | 3309 | |
8487c479 | 3310 | nfs_fattr_init(res->fattr); |
1da177e4 | 3311 | |
ee3ae84e | 3312 | /* Servers should only apply open mode checks for file size changes */ |
8487c479 | 3313 | truncate = (arg->iap->ia_valid & ATTR_SIZE) ? true : false; |
644c9f40 CL |
3314 | if (!truncate) { |
3315 | nfs4_inode_make_writeable(inode); | |
991eedb1 | 3316 | goto zero_stateid; |
644c9f40 | 3317 | } |
ee3ae84e | 3318 | |
991eedb1 | 3319 | if (nfs4_copy_delegation_stateid(inode, FMODE_WRITE, &arg->stateid, &delegation_cred)) { |
ee3ae84e | 3320 | /* Use that stateid */ |
09a54f0e | 3321 | } else if (ctx != NULL && ctx->state) { |
17393475 | 3322 | struct nfs_lock_context *l_ctx; |
29b59f94 | 3323 | if (!nfs4_valid_open_stateid(ctx->state)) |
0418dae1 | 3324 | return -EBADF; |
17393475 N |
3325 | l_ctx = nfs_get_lock_context(ctx); |
3326 | if (IS_ERR(l_ctx)) | |
3327 | return PTR_ERR(l_ctx); | |
7a0566b3 N |
3328 | status = nfs4_select_rw_stateid(ctx->state, FMODE_WRITE, l_ctx, |
3329 | &arg->stateid, &delegation_cred); | |
3330 | nfs_put_lock_context(l_ctx); | |
3331 | if (status == -EIO) | |
0418dae1 | 3332 | return -EBADF; |
d826e5b8 OK |
3333 | else if (status == -EAGAIN) |
3334 | goto zero_stateid; | |
991eedb1 TM |
3335 | } else { |
3336 | zero_stateid: | |
8487c479 | 3337 | nfs4_stateid_copy(&arg->stateid, &zero_stateid); |
991eedb1 | 3338 | } |
abf4e13c TM |
3339 | if (delegation_cred) |
3340 | msg.rpc_cred = delegation_cred; | |
1da177e4 | 3341 | |
8487c479 | 3342 | status = nfs4_call_sync(server->client, server, &msg, &arg->seq_args, &res->seq_res, 1); |
abf4e13c | 3343 | |
a52458b4 | 3344 | put_cred(delegation_cred); |
29b59f94 | 3345 | if (status == 0 && ctx != NULL) |
26e976a8 | 3346 | renew_lease(server, timestamp); |
8487c479 | 3347 | trace_nfs4_setattr(inode, &arg->stateid, status); |
65e4308d | 3348 | return status; |
1da177e4 LT |
3349 | } |
3350 | ||
a52458b4 | 3351 | static int nfs4_do_setattr(struct inode *inode, const struct cred *cred, |
659bfcd6 | 3352 | struct nfs_fattr *fattr, struct iattr *sattr, |
29b59f94 | 3353 | struct nfs_open_context *ctx, struct nfs4_label *ilabel, |
1775fd3e | 3354 | struct nfs4_label *olabel) |
1da177e4 | 3355 | { |
3e4f6290 | 3356 | struct nfs_server *server = NFS_SERVER(inode); |
30846df0 | 3357 | __u32 bitmask[NFS4_BITMASK_SZ]; |
29b59f94 | 3358 | struct nfs4_state *state = ctx ? ctx->state : NULL; |
d9b67e1e AS |
3359 | struct nfs_setattrargs arg = { |
3360 | .fh = NFS_FH(inode), | |
3361 | .iap = sattr, | |
8487c479 | 3362 | .server = server, |
30846df0 | 3363 | .bitmask = bitmask, |
8487c479 | 3364 | .label = ilabel, |
d9b67e1e AS |
3365 | }; |
3366 | struct nfs_setattrres res = { | |
8487c479 TM |
3367 | .fattr = fattr, |
3368 | .label = olabel, | |
3369 | .server = server, | |
d9b67e1e | 3370 | }; |
a1d0b5ee TM |
3371 | struct nfs4_exception exception = { |
3372 | .state = state, | |
3114ea7a | 3373 | .inode = inode, |
8487c479 | 3374 | .stateid = &arg.stateid, |
a1d0b5ee | 3375 | }; |
a71029b8 | 3376 | unsigned long adjust_flags = NFS_INO_INVALID_CHANGE; |
1da177e4 | 3377 | int err; |
8487c479 | 3378 | |
720869eb TM |
3379 | if (sattr->ia_valid & (ATTR_MODE | ATTR_KILL_SUID | ATTR_KILL_SGID)) |
3380 | adjust_flags |= NFS_INO_INVALID_MODE; | |
3381 | if (sattr->ia_valid & (ATTR_UID | ATTR_GID)) | |
a71029b8 TM |
3382 | adjust_flags |= NFS_INO_INVALID_OTHER; |
3383 | ||
1da177e4 | 3384 | do { |
a71029b8 TM |
3385 | nfs4_bitmap_copy_adjust(bitmask, nfs4_bitmask(server, olabel), |
3386 | inode, adjust_flags); | |
30846df0 | 3387 | |
29b59f94 | 3388 | err = _nfs4_do_setattr(inode, &arg, &res, cred, ctx); |
451146be TM |
3389 | switch (err) { |
3390 | case -NFS4ERR_OPENMODE: | |
721ccfb7 TM |
3391 | if (!(sattr->ia_valid & ATTR_SIZE)) { |
3392 | pr_warn_once("NFSv4: server %s is incorrectly " | |
3393 | "applying open mode checks to " | |
3394 | "a SETATTR that is not " | |
3395 | "changing file size.\n", | |
3396 | server->nfs_client->cl_hostname); | |
3397 | } | |
451146be TM |
3398 | if (state && !(state->state & FMODE_WRITE)) { |
3399 | err = -EBADF; | |
3400 | if (sattr->ia_valid & ATTR_OPEN) | |
3401 | err = -EACCES; | |
3402 | goto out; | |
3403 | } | |
3404 | } | |
3405 | err = nfs4_handle_exception(server, err, &exception); | |
1da177e4 | 3406 | } while (exception.retry); |
451146be | 3407 | out: |
1da177e4 LT |
3408 | return err; |
3409 | } | |
3410 | ||
500d701f PT |
3411 | static bool |
3412 | nfs4_wait_on_layoutreturn(struct inode *inode, struct rpc_task *task) | |
3413 | { | |
3414 | if (inode == NULL || !nfs_have_layout(inode)) | |
3415 | return false; | |
3416 | ||
3417 | return pnfs_wait_on_layoutreturn(inode, task); | |
3418 | } | |
3419 | ||
0e0cb35b TM |
3420 | /* |
3421 | * Update the seqid of an open stateid | |
3422 | */ | |
3423 | static void nfs4_sync_open_stateid(nfs4_stateid *dst, | |
3424 | struct nfs4_state *state) | |
3425 | { | |
3426 | __be32 seqid_open; | |
3427 | u32 dst_seqid; | |
3428 | int seq; | |
3429 | ||
3430 | for (;;) { | |
3431 | if (!nfs4_valid_open_stateid(state)) | |
3432 | break; | |
3433 | seq = read_seqbegin(&state->seqlock); | |
3434 | if (!nfs4_state_match_open_stateid_other(state, dst)) { | |
3435 | nfs4_stateid_copy(dst, &state->open_stateid); | |
3436 | if (read_seqretry(&state->seqlock, seq)) | |
3437 | continue; | |
3438 | break; | |
3439 | } | |
3440 | seqid_open = state->open_stateid.seqid; | |
3441 | if (read_seqretry(&state->seqlock, seq)) | |
3442 | continue; | |
3443 | ||
3444 | dst_seqid = be32_to_cpu(dst->seqid); | |
3445 | if ((s32)(dst_seqid - be32_to_cpu(seqid_open)) < 0) | |
3446 | dst->seqid = seqid_open; | |
3447 | break; | |
3448 | } | |
3449 | } | |
3450 | ||
3451 | /* | |
3452 | * Update the seqid of an open stateid after receiving | |
3453 | * NFS4ERR_OLD_STATEID | |
3454 | */ | |
3455 | static bool nfs4_refresh_open_old_stateid(nfs4_stateid *dst, | |
3456 | struct nfs4_state *state) | |
3457 | { | |
3458 | __be32 seqid_open; | |
3459 | u32 dst_seqid; | |
3460 | bool ret; | |
b4868b44 BC |
3461 | int seq, status = -EAGAIN; |
3462 | DEFINE_WAIT(wait); | |
0e0cb35b TM |
3463 | |
3464 | for (;;) { | |
3465 | ret = false; | |
3466 | if (!nfs4_valid_open_stateid(state)) | |
3467 | break; | |
3468 | seq = read_seqbegin(&state->seqlock); | |
3469 | if (!nfs4_state_match_open_stateid_other(state, dst)) { | |
3470 | if (read_seqretry(&state->seqlock, seq)) | |
3471 | continue; | |
3472 | break; | |
3473 | } | |
b4868b44 BC |
3474 | |
3475 | write_seqlock(&state->seqlock); | |
0e0cb35b | 3476 | seqid_open = state->open_stateid.seqid; |
0e0cb35b TM |
3477 | |
3478 | dst_seqid = be32_to_cpu(dst->seqid); | |
b4868b44 BC |
3479 | |
3480 | /* Did another OPEN bump the state's seqid? try again: */ | |
3481 | if ((s32)(be32_to_cpu(seqid_open) - dst_seqid) > 0) { | |
0e0cb35b | 3482 | dst->seqid = seqid_open; |
b4868b44 BC |
3483 | write_sequnlock(&state->seqlock); |
3484 | ret = true; | |
3485 | break; | |
3486 | } | |
3487 | ||
3488 | /* server says we're behind but we haven't seen the update yet */ | |
3489 | set_bit(NFS_STATE_CHANGE_WAIT, &state->flags); | |
3490 | prepare_to_wait(&state->waitq, &wait, TASK_KILLABLE); | |
3491 | write_sequnlock(&state->seqlock); | |
3492 | trace_nfs4_close_stateid_update_wait(state->inode, dst, 0); | |
3493 | ||
bb002388 | 3494 | if (fatal_signal_pending(current)) |
b4868b44 BC |
3495 | status = -EINTR; |
3496 | else | |
3497 | if (schedule_timeout(5*HZ) != 0) | |
3498 | status = 0; | |
3499 | ||
3500 | finish_wait(&state->waitq, &wait); | |
3501 | ||
3502 | if (!status) | |
3503 | continue; | |
3504 | if (status == -EINTR) | |
3505 | break; | |
3506 | ||
3507 | /* we slept the whole 5 seconds, we must have lost a seqid */ | |
3508 | dst->seqid = cpu_to_be32(dst_seqid + 1); | |
0e0cb35b TM |
3509 | ret = true; |
3510 | break; | |
3511 | } | |
3512 | ||
3513 | return ret; | |
3514 | } | |
3515 | ||
1da177e4 LT |
3516 | struct nfs4_closedata { |
3517 | struct inode *inode; | |
3518 | struct nfs4_state *state; | |
3519 | struct nfs_closeargs arg; | |
3520 | struct nfs_closeres res; | |
cf805165 TM |
3521 | struct { |
3522 | struct nfs4_layoutreturn_args arg; | |
3523 | struct nfs4_layoutreturn_res res; | |
4d796d75 | 3524 | struct nfs4_xdr_opaque_data ld_private; |
cf805165 TM |
3525 | u32 roc_barrier; |
3526 | bool roc; | |
3527 | } lr; | |
516a6af6 | 3528 | struct nfs_fattr fattr; |
26e976a8 | 3529 | unsigned long timestamp; |
1da177e4 LT |
3530 | }; |
3531 | ||
963d8fe5 | 3532 | static void nfs4_free_closedata(void *data) |
9512135d | 3533 | { |
963d8fe5 TM |
3534 | struct nfs4_closedata *calldata = data; |
3535 | struct nfs4_state_owner *sp = calldata->state->owner; | |
643168c2 | 3536 | struct super_block *sb = calldata->state->inode->i_sb; |
9512135d | 3537 | |
cf805165 | 3538 | if (calldata->lr.roc) |
1c5bd76d TM |
3539 | pnfs_roc_release(&calldata->lr.arg, &calldata->lr.res, |
3540 | calldata->res.lr_ret); | |
9512135d TM |
3541 | nfs4_put_open_state(calldata->state); |
3542 | nfs_free_seqid(calldata->arg.seqid); | |
9512135d | 3543 | nfs4_put_state_owner(sp); |
322b2b90 | 3544 | nfs_sb_deactive(sb); |
9512135d TM |
3545 | kfree(calldata); |
3546 | } | |
3547 | ||
963d8fe5 | 3548 | static void nfs4_close_done(struct rpc_task *task, void *data) |
1da177e4 | 3549 | { |
963d8fe5 | 3550 | struct nfs4_closedata *calldata = data; |
1da177e4 | 3551 | struct nfs4_state *state = calldata->state; |
1da177e4 | 3552 | struct nfs_server *server = NFS_SERVER(calldata->inode); |
412f6c4c | 3553 | nfs4_stateid *res_stateid = NULL; |
b8b8d221 TM |
3554 | struct nfs4_exception exception = { |
3555 | .state = state, | |
3556 | .inode = calldata->inode, | |
3557 | .stateid = &calldata->arg.stateid, | |
3558 | }; | |
1da177e4 | 3559 | |
a3ca5651 | 3560 | dprintk("%s: begin!\n", __func__); |
14516c3a TM |
3561 | if (!nfs4_sequence_done(task, &calldata->res.seq_res)) |
3562 | return; | |
42113a75 | 3563 | trace_nfs4_close(state, &calldata->arg, &calldata->res, task->tk_status); |
cf805165 TM |
3564 | |
3565 | /* Handle Layoutreturn errors */ | |
078000d0 TM |
3566 | if (pnfs_roc_done(task, &calldata->arg.lr_args, &calldata->res.lr_res, |
3567 | &calldata->res.lr_ret) == -EAGAIN) | |
287a9c55 | 3568 | goto out_restart; |
cf805165 | 3569 | |
d9b67e1e | 3570 | /* hmm. we are done with the inode, and in the process of freeing |
1da177e4 LT |
3571 | * the state_owner. we keep this around to process errors |
3572 | */ | |
1da177e4 LT |
3573 | switch (task->tk_status) { |
3574 | case 0: | |
412f6c4c | 3575 | res_stateid = &calldata->res.stateid; |
26e976a8 | 3576 | renew_lease(server, calldata->timestamp); |
412f6c4c | 3577 | break; |
f07d4a31 TM |
3578 | case -NFS4ERR_ACCESS: |
3579 | if (calldata->arg.bitmask != NULL) { | |
3580 | calldata->arg.bitmask = NULL; | |
3581 | calldata->res.fattr = NULL; | |
91b30d2e | 3582 | goto out_restart; |
f07d4a31 TM |
3583 | |
3584 | } | |
3585 | break; | |
12f275cd TM |
3586 | case -NFS4ERR_OLD_STATEID: |
3587 | /* Did we race with OPEN? */ | |
0e0cb35b | 3588 | if (nfs4_refresh_open_old_stateid(&calldata->arg.stateid, |
91b30d2e TM |
3589 | state)) |
3590 | goto out_restart; | |
12f275cd | 3591 | goto out_release; |
69794ad7 | 3592 | case -NFS4ERR_ADMIN_REVOKED: |
1da177e4 | 3593 | case -NFS4ERR_STALE_STATEID: |
26d36301 TM |
3594 | case -NFS4ERR_EXPIRED: |
3595 | nfs4_free_revoked_stateid(server, | |
3596 | &calldata->arg.stateid, | |
3597 | task->tk_msg.rpc_cred); | |
df561f66 | 3598 | fallthrough; |
9e33bed5 | 3599 | case -NFS4ERR_BAD_STATEID: |
e217e825 TM |
3600 | if (calldata->arg.fmode == 0) |
3601 | break; | |
df561f66 | 3602 | fallthrough; |
1da177e4 | 3603 | default: |
b8b8d221 TM |
3604 | task->tk_status = nfs4_async_handle_exception(task, |
3605 | server, task->tk_status, &exception); | |
3606 | if (exception.retry) | |
91b30d2e | 3607 | goto out_restart; |
1da177e4 | 3608 | } |
4a1e2feb TM |
3609 | nfs_clear_open_stateid(state, &calldata->arg.stateid, |
3610 | res_stateid, calldata->arg.fmode); | |
69794ad7 | 3611 | out_release: |
91b30d2e | 3612 | task->tk_status = 0; |
72211dbe | 3613 | nfs_release_seqid(calldata->arg.seqid); |
d8d84983 | 3614 | nfs_refresh_inode(calldata->inode, &calldata->fattr); |
a3ca5651 | 3615 | dprintk("%s: done, ret = %d!\n", __func__, task->tk_status); |
91b30d2e | 3616 | return; |
91b30d2e TM |
3617 | out_restart: |
3618 | task->tk_status = 0; | |
3619 | rpc_restart_call_prepare(task); | |
3620 | goto out_release; | |
1da177e4 LT |
3621 | } |
3622 | ||
4ce70ada | 3623 | static void nfs4_close_prepare(struct rpc_task *task, void *data) |
1da177e4 | 3624 | { |
4ce70ada | 3625 | struct nfs4_closedata *calldata = data; |
9512135d | 3626 | struct nfs4_state *state = calldata->state; |
7fdab069 | 3627 | struct inode *inode = calldata->inode; |
332d1a03 | 3628 | struct nfs_server *server = NFS_SERVER(inode); |
c8bf7073 | 3629 | struct pnfs_layout_hdr *lo; |
aee7af35 | 3630 | bool is_rdonly, is_wronly, is_rdwr; |
88069f77 | 3631 | int call_close = 0; |
9512135d | 3632 | |
a3ca5651 | 3633 | dprintk("%s: begin!\n", __func__); |
963d8fe5 | 3634 | if (nfs_wait_on_sequence(calldata->arg.seqid, task) != 0) |
c8da19b9 | 3635 | goto out_wait; |
003707c7 | 3636 | |
88069f77 | 3637 | task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_DOWNGRADE]; |
4cecb76f | 3638 | spin_lock(&state->owner->so_lock); |
aee7af35 TM |
3639 | is_rdwr = test_bit(NFS_O_RDWR_STATE, &state->flags); |
3640 | is_rdonly = test_bit(NFS_O_RDONLY_STATE, &state->flags); | |
3641 | is_wronly = test_bit(NFS_O_WRONLY_STATE, &state->flags); | |
003707c7 | 3642 | /* Calculate the change in open mode */ |
cd9288ff | 3643 | calldata->arg.fmode = 0; |
e7616923 | 3644 | if (state->n_rdwr == 0) { |
cd9288ff TM |
3645 | if (state->n_rdonly == 0) |
3646 | call_close |= is_rdonly; | |
3647 | else if (is_rdonly) | |
3648 | calldata->arg.fmode |= FMODE_READ; | |
3649 | if (state->n_wronly == 0) | |
3650 | call_close |= is_wronly; | |
3651 | else if (is_wronly) | |
3652 | calldata->arg.fmode |= FMODE_WRITE; | |
e547f262 TM |
3653 | if (calldata->arg.fmode != (FMODE_READ|FMODE_WRITE)) |
3654 | call_close |= is_rdwr; | |
cd9288ff TM |
3655 | } else if (is_rdwr) |
3656 | calldata->arg.fmode |= FMODE_READ|FMODE_WRITE; | |
3657 | ||
0e0cb35b TM |
3658 | nfs4_sync_open_stateid(&calldata->arg.stateid, state); |
3659 | if (!nfs4_valid_open_stateid(state)) | |
5d422301 | 3660 | call_close = 0; |
4cecb76f | 3661 | spin_unlock(&state->owner->so_lock); |
88069f77 TM |
3662 | |
3663 | if (!call_close) { | |
963d8fe5 | 3664 | /* Note: exit _without_ calling nfs4_close_done */ |
c8da19b9 | 3665 | goto out_no_action; |
9512135d | 3666 | } |
88069f77 | 3667 | |
1c5bd76d | 3668 | if (!calldata->lr.roc && nfs4_wait_on_layoutreturn(inode, task)) { |
500d701f PT |
3669 | nfs_release_seqid(calldata->arg.seqid); |
3670 | goto out_wait; | |
3671 | } | |
3672 | ||
c8bf7073 TM |
3673 | lo = calldata->arg.lr_args ? calldata->arg.lr_args->layout : NULL; |
3674 | if (lo && !pnfs_layout_is_valid(lo)) { | |
3675 | calldata->arg.lr_args = NULL; | |
3676 | calldata->res.lr_res = NULL; | |
3677 | } | |
3678 | ||
9413a1a1 | 3679 | if (calldata->arg.fmode == 0) |
88069f77 | 3680 | task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CLOSE]; |
3ecefc92 | 3681 | |
9413a1a1 | 3682 | if (calldata->arg.fmode == 0 || calldata->arg.fmode == FMODE_READ) { |
3ecefc92 | 3683 | /* Close-to-open cache consistency revalidation */ |
76bd5c01 | 3684 | if (!nfs4_have_delegation(inode, FMODE_READ)) { |
332d1a03 TM |
3685 | nfs4_bitmask_set(calldata->arg.bitmask_store, |
3686 | server->cache_consistency_bitmask, | |
3687 | inode, server, NULL); | |
3688 | calldata->arg.bitmask = calldata->arg.bitmask_store; | |
76bd5c01 | 3689 | } else |
3ecefc92 TM |
3690 | calldata->arg.bitmask = NULL; |
3691 | } | |
3c13cb5b | 3692 | |
6ae37339 TM |
3693 | calldata->arg.share_access = |
3694 | nfs4_map_atomic_open_share(NFS_SERVER(inode), | |
3695 | calldata->arg.fmode, 0); | |
88069f77 | 3696 | |
d8d84983 TM |
3697 | if (calldata->res.fattr == NULL) |
3698 | calldata->arg.bitmask = NULL; | |
3699 | else if (calldata->arg.bitmask == NULL) | |
3700 | calldata->res.fattr = NULL; | |
26e976a8 | 3701 | calldata->timestamp = jiffies; |
42e1cca7 | 3702 | if (nfs4_setup_sequence(NFS_SERVER(inode)->nfs_client, |
9d12b216 TM |
3703 | &calldata->arg.seq_args, |
3704 | &calldata->res.seq_res, | |
2240a9e2 TM |
3705 | task) != 0) |
3706 | nfs_release_seqid(calldata->arg.seqid); | |
a3ca5651 | 3707 | dprintk("%s: done!\n", __func__); |
c8da19b9 TM |
3708 | return; |
3709 | out_no_action: | |
3710 | task->tk_action = NULL; | |
3711 | out_wait: | |
3712 | nfs4_sequence_done(task, &calldata->res.seq_res); | |
1da177e4 LT |
3713 | } |
3714 | ||
963d8fe5 | 3715 | static const struct rpc_call_ops nfs4_close_ops = { |
4ce70ada | 3716 | .rpc_call_prepare = nfs4_close_prepare, |
963d8fe5 TM |
3717 | .rpc_call_done = nfs4_close_done, |
3718 | .rpc_release = nfs4_free_closedata, | |
3719 | }; | |
3720 | ||
1da177e4 LT |
3721 | /* |
3722 | * It is possible for data to be read/written from a mem-mapped file | |
3723 | * after the sys_close call (which hits the vfs layer as a flush). | |
3724 | * This means that we can't safely call nfsv4 close on a file until | |
3725 | * the inode is cleared. This in turn means that we are not good | |
3726 | * NFSv4 citizens - we do not indicate to the server to update the file's | |
3727 | * share state even when we are done with one of the three share | |
3728 | * stateid's in the inode. | |
3729 | * | |
3730 | * NOTE: Caller must be holding the sp->so_owner semaphore! | |
3731 | */ | |
1f7977c1 | 3732 | int nfs4_do_close(struct nfs4_state *state, gfp_t gfp_mask, int wait) |
1da177e4 | 3733 | { |
4a35bd41 | 3734 | struct nfs_server *server = NFS_SERVER(state->inode); |
63f5f796 | 3735 | struct nfs_seqid *(*alloc_seqid)(struct nfs_seqid_counter *, gfp_t); |
1da177e4 | 3736 | struct nfs4_closedata *calldata; |
b39e625b TM |
3737 | struct nfs4_state_owner *sp = state->owner; |
3738 | struct rpc_task *task; | |
5138fde0 TM |
3739 | struct rpc_message msg = { |
3740 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CLOSE], | |
3741 | .rpc_cred = state->owner->so_cred, | |
3742 | }; | |
c970aa85 TM |
3743 | struct rpc_task_setup task_setup_data = { |
3744 | .rpc_client = server->client, | |
5138fde0 | 3745 | .rpc_message = &msg, |
c970aa85 | 3746 | .callback_ops = &nfs4_close_ops, |
101070ca | 3747 | .workqueue = nfsiod_workqueue, |
61296507 | 3748 | .flags = RPC_TASK_ASYNC | RPC_TASK_CRED_NOREF, |
c970aa85 | 3749 | }; |
9512135d | 3750 | int status = -ENOMEM; |
1da177e4 | 3751 | |
fa940720 WAA |
3752 | nfs4_state_protect(server->nfs_client, NFS_SP4_MACH_CRED_CLEANUP, |
3753 | &task_setup_data.rpc_client, &msg); | |
3754 | ||
8535b2be | 3755 | calldata = kzalloc(sizeof(*calldata), gfp_mask); |
1da177e4 | 3756 | if (calldata == NULL) |
9512135d | 3757 | goto out; |
fba83f34 | 3758 | nfs4_init_sequence(&calldata->arg.seq_args, &calldata->res.seq_res, 1, 0); |
4a35bd41 | 3759 | calldata->inode = state->inode; |
1da177e4 | 3760 | calldata->state = state; |
4a35bd41 | 3761 | calldata->arg.fh = NFS_FH(state->inode); |
c82bac6f TM |
3762 | if (!nfs4_copy_open_stateid(&calldata->arg.stateid, state)) |
3763 | goto out_free_calldata; | |
1da177e4 | 3764 | /* Serialization for the sequence id */ |
63f5f796 TM |
3765 | alloc_seqid = server->nfs_client->cl_mvops->alloc_seqid; |
3766 | calldata->arg.seqid = alloc_seqid(&state->owner->so_seqid, gfp_mask); | |
badc76dd | 3767 | if (IS_ERR(calldata->arg.seqid)) |
9512135d | 3768 | goto out_free_calldata; |
d8d84983 | 3769 | nfs_fattr_init(&calldata->fattr); |
dc0b027d | 3770 | calldata->arg.fmode = 0; |
4d796d75 | 3771 | calldata->lr.arg.ld_private = &calldata->lr.ld_private; |
516a6af6 | 3772 | calldata->res.fattr = &calldata->fattr; |
c1d51931 | 3773 | calldata->res.seqid = calldata->arg.seqid; |
516a6af6 | 3774 | calldata->res.server = server; |
cf805165 | 3775 | calldata->res.lr_ret = -NFS4ERR_NOMATCHING_LAYOUT; |
1c5bd76d TM |
3776 | calldata->lr.roc = pnfs_roc(state->inode, |
3777 | &calldata->lr.arg, &calldata->lr.res, msg.rpc_cred); | |
3778 | if (calldata->lr.roc) { | |
3779 | calldata->arg.lr_args = &calldata->lr.arg; | |
3780 | calldata->res.lr_res = &calldata->lr.res; | |
3781 | } | |
643168c2 | 3782 | nfs_sb_active(calldata->inode->i_sb); |
9512135d | 3783 | |
1174dd1f TM |
3784 | msg.rpc_argp = &calldata->arg; |
3785 | msg.rpc_resp = &calldata->res; | |
c970aa85 TM |
3786 | task_setup_data.callback_data = calldata; |
3787 | task = rpc_run_task(&task_setup_data); | |
b39e625b TM |
3788 | if (IS_ERR(task)) |
3789 | return PTR_ERR(task); | |
a49c3c77 TM |
3790 | status = 0; |
3791 | if (wait) | |
3792 | status = rpc_wait_for_completion_task(task); | |
b39e625b | 3793 | rpc_put_task(task); |
a49c3c77 | 3794 | return status; |
9512135d TM |
3795 | out_free_calldata: |
3796 | kfree(calldata); | |
3797 | out: | |
b39e625b TM |
3798 | nfs4_put_open_state(state); |
3799 | nfs4_put_state_owner(sp); | |
9512135d | 3800 | return status; |
1da177e4 LT |
3801 | } |
3802 | ||
2b484297 | 3803 | static struct inode * |
5bc2afc2 TM |
3804 | nfs4_atomic_open(struct inode *dir, struct nfs_open_context *ctx, |
3805 | int open_flags, struct iattr *attr, int *opened) | |
1da177e4 | 3806 | { |
1da177e4 | 3807 | struct nfs4_state *state; |
aa9c2669 DQ |
3808 | struct nfs4_label l = {0, 0, 0, NULL}, *label = NULL; |
3809 | ||
3810 | label = nfs4_label_init_security(dir, ctx->dentry, attr, &l); | |
1da177e4 | 3811 | |
565277f6 | 3812 | /* Protect against concurrent sillydeletes */ |
5bc2afc2 | 3813 | state = nfs4_do_open(dir, ctx, open_flags, attr, label, opened); |
aa9c2669 DQ |
3814 | |
3815 | nfs4_label_release_security(label); | |
3816 | ||
f46e0bd3 TM |
3817 | if (IS_ERR(state)) |
3818 | return ERR_CAST(state); | |
275bb307 | 3819 | return state->inode; |
1da177e4 LT |
3820 | } |
3821 | ||
1185a552 | 3822 | static void nfs4_close_context(struct nfs_open_context *ctx, int is_sync) |
7fe5c398 TM |
3823 | { |
3824 | if (ctx->state == NULL) | |
3825 | return; | |
3826 | if (is_sync) | |
1bf85d8c | 3827 | nfs4_close_sync(ctx->state, _nfs4_ctx_to_openmode(ctx)); |
7fe5c398 | 3828 | else |
1bf85d8c | 3829 | nfs4_close_state(ctx->state, _nfs4_ctx_to_openmode(ctx)); |
7fe5c398 | 3830 | } |
1da177e4 | 3831 | |
b944dba3 TM |
3832 | #define FATTR4_WORD1_NFS40_MASK (2*FATTR4_WORD1_MOUNTED_ON_FILEID - 1UL) |
3833 | #define FATTR4_WORD2_NFS41_MASK (2*FATTR4_WORD2_SUPPATTR_EXCLCREAT - 1UL) | |
b78ef845 | 3834 | #define FATTR4_WORD2_NFS42_MASK (2*FATTR4_WORD2_XATTR_SUPPORT - 1UL) |
b944dba3 | 3835 | |
1da177e4 LT |
3836 | static int _nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *fhandle) |
3837 | { | |
8c61282f | 3838 | u32 bitmask[3] = {}, minorversion = server->nfs_client->cl_minorversion; |
43652ad5 BH |
3839 | struct nfs4_server_caps_arg args = { |
3840 | .fhandle = fhandle, | |
8c61282f | 3841 | .bitmask = bitmask, |
43652ad5 | 3842 | }; |
1da177e4 LT |
3843 | struct nfs4_server_caps_res res = {}; |
3844 | struct rpc_message msg = { | |
3845 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SERVER_CAPS], | |
43652ad5 | 3846 | .rpc_argp = &args, |
1da177e4 LT |
3847 | .rpc_resp = &res, |
3848 | }; | |
3849 | int status; | |
f4b23de3 | 3850 | int i; |
1da177e4 | 3851 | |
8c61282f KM |
3852 | bitmask[0] = FATTR4_WORD0_SUPPORTED_ATTRS | |
3853 | FATTR4_WORD0_FH_EXPIRE_TYPE | | |
3854 | FATTR4_WORD0_LINK_SUPPORT | | |
3855 | FATTR4_WORD0_SYMLINK_SUPPORT | | |
3856 | FATTR4_WORD0_ACLSUPPORT; | |
3857 | if (minorversion) | |
3858 | bitmask[2] = FATTR4_WORD2_SUPPATTR_EXCLCREAT; | |
3859 | ||
7c513058 | 3860 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 | 3861 | if (status == 0) { |
b944dba3 | 3862 | /* Sanity check the server answers */ |
8c61282f | 3863 | switch (minorversion) { |
b944dba3 TM |
3864 | case 0: |
3865 | res.attr_bitmask[1] &= FATTR4_WORD1_NFS40_MASK; | |
3866 | res.attr_bitmask[2] = 0; | |
3867 | break; | |
3868 | case 1: | |
3869 | res.attr_bitmask[2] &= FATTR4_WORD2_NFS41_MASK; | |
3870 | break; | |
3871 | case 2: | |
3872 | res.attr_bitmask[2] &= FATTR4_WORD2_NFS42_MASK; | |
3873 | } | |
1da177e4 | 3874 | memcpy(server->attr_bitmask, res.attr_bitmask, sizeof(server->attr_bitmask)); |
ce62b114 TM |
3875 | server->caps &= ~(NFS_CAP_ACLS | NFS_CAP_HARDLINKS | |
3876 | NFS_CAP_SYMLINKS| NFS_CAP_SECURITY_LABEL); | |
3877 | server->fattr_valid = NFS_ATTR_FATTR_V4; | |
7dd7d959 MN |
3878 | if (res.attr_bitmask[0] & FATTR4_WORD0_ACL && |
3879 | res.acl_bitmask & ACL4_SUPPORT_ALLOW_ACL) | |
1da177e4 LT |
3880 | server->caps |= NFS_CAP_ACLS; |
3881 | if (res.has_links != 0) | |
3882 | server->caps |= NFS_CAP_HARDLINKS; | |
3883 | if (res.has_symlinks != 0) | |
3884 | server->caps |= NFS_CAP_SYMLINKS; | |
0b4f132b SM |
3885 | #ifdef CONFIG_NFS_V4_SECURITY_LABEL |
3886 | if (res.attr_bitmask[2] & FATTR4_WORD2_SECURITY_LABEL) | |
3887 | server->caps |= NFS_CAP_SECURITY_LABEL; | |
3888 | #endif | |
ce62b114 TM |
3889 | if (!(res.attr_bitmask[0] & FATTR4_WORD0_FILEID)) |
3890 | server->fattr_valid &= ~NFS_ATTR_FATTR_FILEID; | |
3891 | if (!(res.attr_bitmask[1] & FATTR4_WORD1_MODE)) | |
3892 | server->fattr_valid &= ~NFS_ATTR_FATTR_MODE; | |
3893 | if (!(res.attr_bitmask[1] & FATTR4_WORD1_NUMLINKS)) | |
3894 | server->fattr_valid &= ~NFS_ATTR_FATTR_NLINK; | |
3895 | if (!(res.attr_bitmask[1] & FATTR4_WORD1_OWNER)) | |
3896 | server->fattr_valid &= ~(NFS_ATTR_FATTR_OWNER | | |
3897 | NFS_ATTR_FATTR_OWNER_NAME); | |
3898 | if (!(res.attr_bitmask[1] & FATTR4_WORD1_OWNER_GROUP)) | |
3899 | server->fattr_valid &= ~(NFS_ATTR_FATTR_GROUP | | |
3900 | NFS_ATTR_FATTR_GROUP_NAME); | |
3901 | if (!(res.attr_bitmask[1] & FATTR4_WORD1_SPACE_USED)) | |
3902 | server->fattr_valid &= ~NFS_ATTR_FATTR_SPACE_USED; | |
3903 | if (!(res.attr_bitmask[1] & FATTR4_WORD1_TIME_ACCESS)) | |
3904 | server->fattr_valid &= ~NFS_ATTR_FATTR_ATIME; | |
3905 | if (!(res.attr_bitmask[1] & FATTR4_WORD1_TIME_METADATA)) | |
3906 | server->fattr_valid &= ~NFS_ATTR_FATTR_CTIME; | |
3907 | if (!(res.attr_bitmask[1] & FATTR4_WORD1_TIME_MODIFY)) | |
3908 | server->fattr_valid &= ~NFS_ATTR_FATTR_MTIME; | |
aa9c2669 DQ |
3909 | memcpy(server->attr_bitmask_nl, res.attr_bitmask, |
3910 | sizeof(server->attr_bitmask)); | |
b944dba3 | 3911 | server->attr_bitmask_nl[2] &= ~FATTR4_WORD2_SECURITY_LABEL; |
62ab460c | 3912 | |
a65318bf TM |
3913 | memcpy(server->cache_consistency_bitmask, res.attr_bitmask, sizeof(server->cache_consistency_bitmask)); |
3914 | server->cache_consistency_bitmask[0] &= FATTR4_WORD0_CHANGE|FATTR4_WORD0_SIZE; | |
3915 | server->cache_consistency_bitmask[1] &= FATTR4_WORD1_TIME_METADATA|FATTR4_WORD1_TIME_MODIFY; | |
b944dba3 | 3916 | server->cache_consistency_bitmask[2] = 0; |
f4b23de3 TM |
3917 | |
3918 | /* Avoid a regression due to buggy server */ | |
3919 | for (i = 0; i < ARRAY_SIZE(res.exclcreat_bitmask); i++) | |
3920 | res.exclcreat_bitmask[i] &= res.attr_bitmask[i]; | |
8c61282f KM |
3921 | memcpy(server->exclcreat_bitmask, res.exclcreat_bitmask, |
3922 | sizeof(server->exclcreat_bitmask)); | |
f4b23de3 | 3923 | |
1da177e4 | 3924 | server->acl_bitmask = res.acl_bitmask; |
264e6351 | 3925 | server->fh_expire_type = res.fh_expire_type; |
1da177e4 | 3926 | } |
cccef3b9 | 3927 | |
1da177e4 LT |
3928 | return status; |
3929 | } | |
3930 | ||
55a97593 | 3931 | int nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *fhandle) |
1da177e4 | 3932 | { |
0688e64b TM |
3933 | struct nfs4_exception exception = { |
3934 | .interruptible = true, | |
3935 | }; | |
1da177e4 LT |
3936 | int err; |
3937 | do { | |
3938 | err = nfs4_handle_exception(server, | |
3939 | _nfs4_server_capabilities(server, fhandle), | |
3940 | &exception); | |
3941 | } while (exception.retry); | |
3942 | return err; | |
3943 | } | |
3944 | ||
3945 | static int _nfs4_lookup_root(struct nfs_server *server, struct nfs_fh *fhandle, | |
3946 | struct nfs_fsinfo *info) | |
3947 | { | |
aa9c2669 | 3948 | u32 bitmask[3]; |
1da177e4 | 3949 | struct nfs4_lookup_root_arg args = { |
aa9c2669 | 3950 | .bitmask = bitmask, |
1da177e4 LT |
3951 | }; |
3952 | struct nfs4_lookup_res res = { | |
3953 | .server = server, | |
0e574af1 | 3954 | .fattr = info->fattr, |
1da177e4 LT |
3955 | .fh = fhandle, |
3956 | }; | |
3957 | struct rpc_message msg = { | |
3958 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOOKUP_ROOT], | |
3959 | .rpc_argp = &args, | |
3960 | .rpc_resp = &res, | |
3961 | }; | |
008f55d0 | 3962 | |
aa9c2669 DQ |
3963 | bitmask[0] = nfs4_fattr_bitmap[0]; |
3964 | bitmask[1] = nfs4_fattr_bitmap[1]; | |
3965 | /* | |
3966 | * Process the label in the upcoming getfattr | |
3967 | */ | |
3968 | bitmask[2] = nfs4_fattr_bitmap[2] & ~FATTR4_WORD2_SECURITY_LABEL; | |
3969 | ||
0e574af1 | 3970 | nfs_fattr_init(info->fattr); |
7c513058 | 3971 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
3972 | } |
3973 | ||
3974 | static int nfs4_lookup_root(struct nfs_server *server, struct nfs_fh *fhandle, | |
3975 | struct nfs_fsinfo *info) | |
3976 | { | |
0688e64b TM |
3977 | struct nfs4_exception exception = { |
3978 | .interruptible = true, | |
3979 | }; | |
1da177e4 LT |
3980 | int err; |
3981 | do { | |
fb8a5ba8 | 3982 | err = _nfs4_lookup_root(server, fhandle, info); |
b5f875a9 | 3983 | trace_nfs4_lookup_root(server, fhandle, info->fattr, err); |
fb8a5ba8 BS |
3984 | switch (err) { |
3985 | case 0: | |
3986 | case -NFS4ERR_WRONGSEC: | |
05e9cfb4 | 3987 | goto out; |
fb8a5ba8 BS |
3988 | default: |
3989 | err = nfs4_handle_exception(server, err, &exception); | |
3990 | } | |
1da177e4 | 3991 | } while (exception.retry); |
05e9cfb4 | 3992 | out: |
1da177e4 LT |
3993 | return err; |
3994 | } | |
3995 | ||
8f70e95f BS |
3996 | static int nfs4_lookup_root_sec(struct nfs_server *server, struct nfs_fh *fhandle, |
3997 | struct nfs_fsinfo *info, rpc_authflavor_t flavor) | |
3998 | { | |
c2190661 TM |
3999 | struct rpc_auth_create_args auth_args = { |
4000 | .pseudoflavor = flavor, | |
4001 | }; | |
8f70e95f | 4002 | struct rpc_auth *auth; |
8f70e95f | 4003 | |
c2190661 | 4004 | auth = rpcauth_create(&auth_args, server->client); |
9df1336c AS |
4005 | if (IS_ERR(auth)) |
4006 | return -EACCES; | |
4007 | return nfs4_lookup_root(server, fhandle, info); | |
8f70e95f BS |
4008 | } |
4009 | ||
9a744ba3 CL |
4010 | /* |
4011 | * Retry pseudoroot lookup with various security flavors. We do this when: | |
4012 | * | |
4013 | * NFSv4.0: the PUTROOTFH operation returns NFS4ERR_WRONGSEC | |
4014 | * NFSv4.1: the server does not support the SECINFO_NO_NAME operation | |
4015 | * | |
4016 | * Returns zero on success, or a negative NFS4ERR value, or a | |
4017 | * negative errno value. | |
4018 | */ | |
801a16dc | 4019 | static int nfs4_find_root_sec(struct nfs_server *server, struct nfs_fh *fhandle, |
54ceac45 | 4020 | struct nfs_fsinfo *info) |
1da177e4 | 4021 | { |
9a744ba3 CL |
4022 | /* Per 3530bis 15.33.5 */ |
4023 | static const rpc_authflavor_t flav_array[] = { | |
4024 | RPC_AUTH_GSS_KRB5P, | |
4025 | RPC_AUTH_GSS_KRB5I, | |
4026 | RPC_AUTH_GSS_KRB5, | |
c4eafe11 | 4027 | RPC_AUTH_UNIX, /* courtesy */ |
9a744ba3 CL |
4028 | RPC_AUTH_NULL, |
4029 | }; | |
4030 | int status = -EPERM; | |
4031 | size_t i; | |
6a1a1e34 | 4032 | |
4d4b69dd WAA |
4033 | if (server->auth_info.flavor_len > 0) { |
4034 | /* try each flavor specified by user */ | |
4035 | for (i = 0; i < server->auth_info.flavor_len; i++) { | |
4036 | status = nfs4_lookup_root_sec(server, fhandle, info, | |
4037 | server->auth_info.flavors[i]); | |
4038 | if (status == -NFS4ERR_WRONGSEC || status == -EACCES) | |
4039 | continue; | |
4040 | break; | |
4041 | } | |
4042 | } else { | |
4043 | /* no flavors specified by user, try default list */ | |
4044 | for (i = 0; i < ARRAY_SIZE(flav_array); i++) { | |
4045 | status = nfs4_lookup_root_sec(server, fhandle, info, | |
4046 | flav_array[i]); | |
4047 | if (status == -NFS4ERR_WRONGSEC || status == -EACCES) | |
4048 | continue; | |
4049 | break; | |
4050 | } | |
8f70e95f | 4051 | } |
9a744ba3 | 4052 | |
fb8a5ba8 | 4053 | /* |
d3787af2 | 4054 | * -EACCES could mean that the user doesn't have correct permissions |
fb8a5ba8 BS |
4055 | * to access the mount. It could also mean that we tried to mount |
4056 | * with a gss auth flavor, but rpc.gssd isn't running. Either way, | |
4057 | * existing mount programs don't handle -EACCES very well so it should | |
4058 | * be mapped to -EPERM instead. | |
4059 | */ | |
4060 | if (status == -EACCES) | |
4061 | status = -EPERM; | |
801a16dc BS |
4062 | return status; |
4063 | } | |
4064 | ||
2ed4b95b CL |
4065 | /** |
4066 | * nfs4_proc_get_rootfh - get file handle for server's pseudoroot | |
4067 | * @server: initialized nfs_server handle | |
4068 | * @fhandle: we fill in the pseudo-fs root file handle | |
4069 | * @info: we fill in an FSINFO struct | |
5e6b1990 | 4070 | * @auth_probe: probe the auth flavours |
2ed4b95b CL |
4071 | * |
4072 | * Returns zero on success, or a negative errno. | |
801a16dc | 4073 | */ |
3028eb2b | 4074 | int nfs4_proc_get_rootfh(struct nfs_server *server, struct nfs_fh *fhandle, |
5e6b1990 TM |
4075 | struct nfs_fsinfo *info, |
4076 | bool auth_probe) | |
801a16dc | 4077 | { |
c7757074 | 4078 | int status = 0; |
2ed4b95b | 4079 | |
c7757074 | 4080 | if (!auth_probe) |
5e6b1990 | 4081 | status = nfs4_lookup_root(server, fhandle, info); |
c7757074 AP |
4082 | |
4083 | if (auth_probe || status == NFS4ERR_WRONGSEC) | |
698c937b TM |
4084 | status = server->nfs_client->cl_mvops->find_root_sec(server, |
4085 | fhandle, info); | |
2ed4b95b | 4086 | |
1da177e4 LT |
4087 | if (status == 0) |
4088 | status = nfs4_server_capabilities(server, fhandle); | |
4089 | if (status == 0) | |
4090 | status = nfs4_do_fsinfo(server, fhandle, info); | |
2ed4b95b | 4091 | |
c12e87f4 | 4092 | return nfs4_map_errors(status); |
1da177e4 LT |
4093 | } |
4094 | ||
bae36241 BS |
4095 | static int nfs4_proc_get_root(struct nfs_server *server, struct nfs_fh *mntfh, |
4096 | struct nfs_fsinfo *info) | |
4097 | { | |
4098 | int error; | |
4099 | struct nfs_fattr *fattr = info->fattr; | |
779df6a5 | 4100 | struct nfs4_label *label = fattr->label; |
bae36241 BS |
4101 | |
4102 | error = nfs4_server_capabilities(server, mntfh); | |
4103 | if (error < 0) { | |
4104 | dprintk("nfs4_get_root: getcaps error = %d\n", -error); | |
4105 | return error; | |
4106 | } | |
4107 | ||
a841b54d | 4108 | error = nfs4_proc_getattr(server, mntfh, fattr, label, NULL); |
bae36241 BS |
4109 | if (error < 0) { |
4110 | dprintk("nfs4_get_root: getattr error = %d\n", -error); | |
779df6a5 | 4111 | goto out; |
bae36241 BS |
4112 | } |
4113 | ||
4114 | if (fattr->valid & NFS_ATTR_FATTR_FSID && | |
4115 | !nfs_fsid_equal(&server->fsid, &fattr->fsid)) | |
4116 | memcpy(&server->fsid, &fattr->fsid, sizeof(server->fsid)); | |
4117 | ||
779df6a5 | 4118 | out: |
bae36241 BS |
4119 | return error; |
4120 | } | |
4121 | ||
6b97fd3d MN |
4122 | /* |
4123 | * Get locations and (maybe) other attributes of a referral. | |
4124 | * Note that we'll actually follow the referral later when | |
4125 | * we detect fsid mismatch in inode revalidation | |
4126 | */ | |
f05d147f BS |
4127 | static int nfs4_get_referral(struct rpc_clnt *client, struct inode *dir, |
4128 | const struct qstr *name, struct nfs_fattr *fattr, | |
4129 | struct nfs_fh *fhandle) | |
6b97fd3d MN |
4130 | { |
4131 | int status = -ENOMEM; | |
4132 | struct page *page = NULL; | |
4133 | struct nfs4_fs_locations *locations = NULL; | |
6b97fd3d MN |
4134 | |
4135 | page = alloc_page(GFP_KERNEL); | |
4136 | if (page == NULL) | |
4137 | goto out; | |
4138 | locations = kmalloc(sizeof(struct nfs4_fs_locations), GFP_KERNEL); | |
4139 | if (locations == NULL) | |
4140 | goto out; | |
4141 | ||
f05d147f | 4142 | status = nfs4_proc_fs_locations(client, dir, name, locations, page); |
6b97fd3d MN |
4143 | if (status != 0) |
4144 | goto out; | |
519ae255 CL |
4145 | |
4146 | /* | |
4147 | * If the fsid didn't change, this is a migration event, not a | |
4148 | * referral. Cause us to drop into the exception handler, which | |
4149 | * will kick off migration recovery. | |
4150 | */ | |
6b97fd3d | 4151 | if (nfs_fsid_equal(&NFS_SERVER(dir)->fsid, &locations->fattr.fsid)) { |
533eb461 AA |
4152 | dprintk("%s: server did not return a different fsid for" |
4153 | " a referral at %s\n", __func__, name->name); | |
519ae255 | 4154 | status = -NFS4ERR_MOVED; |
6b97fd3d MN |
4155 | goto out; |
4156 | } | |
533eb461 AA |
4157 | /* Fixup attributes for the nfs_lookup() call to nfs_fhget() */ |
4158 | nfs_fixup_referral_attributes(&locations->fattr); | |
6b97fd3d | 4159 | |
533eb461 | 4160 | /* replace the lookup nfs_fattr with the locations nfs_fattr */ |
6b97fd3d | 4161 | memcpy(fattr, &locations->fattr, sizeof(struct nfs_fattr)); |
6b97fd3d MN |
4162 | memset(fhandle, 0, sizeof(struct nfs_fh)); |
4163 | out: | |
4164 | if (page) | |
4165 | __free_page(page); | |
5d7ca35a | 4166 | kfree(locations); |
6b97fd3d MN |
4167 | return status; |
4168 | } | |
4169 | ||
1775fd3e | 4170 | static int _nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, |
a841b54d TM |
4171 | struct nfs_fattr *fattr, struct nfs4_label *label, |
4172 | struct inode *inode) | |
1da177e4 | 4173 | { |
771734f2 | 4174 | __u32 bitmask[NFS4_BITMASK_SZ]; |
1da177e4 LT |
4175 | struct nfs4_getattr_arg args = { |
4176 | .fh = fhandle, | |
771734f2 | 4177 | .bitmask = bitmask, |
1da177e4 LT |
4178 | }; |
4179 | struct nfs4_getattr_res res = { | |
4180 | .fattr = fattr, | |
1775fd3e | 4181 | .label = label, |
1da177e4 LT |
4182 | .server = server, |
4183 | }; | |
4184 | struct rpc_message msg = { | |
4185 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETATTR], | |
4186 | .rpc_argp = &args, | |
4187 | .rpc_resp = &res, | |
4188 | }; | |
c74dfe97 TM |
4189 | unsigned short task_flags = 0; |
4190 | ||
4191 | /* Is this is an attribute revalidation, subject to softreval? */ | |
4192 | if (inode && (server->flags & NFS_MOUNT_SOFTREVAL)) | |
4193 | task_flags |= RPC_TASK_TIMEOUT; | |
aa9c2669 | 4194 | |
a71029b8 | 4195 | nfs4_bitmap_copy_adjust(bitmask, nfs4_bitmask(server, label), inode, 0); |
0e574af1 | 4196 | nfs_fattr_init(fattr); |
c74dfe97 TM |
4197 | nfs4_init_sequence(&args.seq_args, &res.seq_res, 0, 0); |
4198 | return nfs4_do_call_sync(server->client, server, &msg, | |
4199 | &args.seq_args, &res.seq_res, task_flags); | |
1da177e4 LT |
4200 | } |
4201 | ||
ec4b0925 | 4202 | int nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, |
a841b54d TM |
4203 | struct nfs_fattr *fattr, struct nfs4_label *label, |
4204 | struct inode *inode) | |
1da177e4 | 4205 | { |
0688e64b TM |
4206 | struct nfs4_exception exception = { |
4207 | .interruptible = true, | |
4208 | }; | |
1da177e4 LT |
4209 | int err; |
4210 | do { | |
a841b54d | 4211 | err = _nfs4_proc_getattr(server, fhandle, fattr, label, inode); |
b5f875a9 TM |
4212 | trace_nfs4_getattr(server, fhandle, fattr, err); |
4213 | err = nfs4_handle_exception(server, err, | |
1da177e4 LT |
4214 | &exception); |
4215 | } while (exception.retry); | |
4216 | return err; | |
4217 | } | |
4218 | ||
4219 | /* | |
4220 | * The file is not closed if it is opened due to the a request to change | |
4221 | * the size of the file. The open call will not be needed once the | |
4222 | * VFS layer lookup-intents are implemented. | |
4223 | * | |
4224 | * Close is called when the inode is destroyed. | |
4225 | * If we haven't opened the file for O_WRONLY, we | |
4226 | * need to in the size_change case to obtain a stateid. | |
4227 | * | |
4228 | * Got race? | |
4229 | * Because OPEN is always done by name in nfsv4, it is | |
4230 | * possible that we opened a different file by the same | |
4231 | * name. We can recognize this race condition, but we | |
4232 | * can't do anything about it besides returning an error. | |
4233 | * | |
4234 | * This will be fixed with VFS changes (lookup-intent). | |
4235 | */ | |
4236 | static int | |
4237 | nfs4_proc_setattr(struct dentry *dentry, struct nfs_fattr *fattr, | |
4238 | struct iattr *sattr) | |
4239 | { | |
2b0143b5 | 4240 | struct inode *inode = d_inode(dentry); |
a52458b4 | 4241 | const struct cred *cred = NULL; |
29b59f94 | 4242 | struct nfs_open_context *ctx = NULL; |
14c43f76 | 4243 | struct nfs4_label *label = NULL; |
1da177e4 LT |
4244 | int status; |
4245 | ||
88ac815c PT |
4246 | if (pnfs_ld_layoutret_on_setattr(inode) && |
4247 | sattr->ia_valid & ATTR_SIZE && | |
4248 | sattr->ia_size < i_size_read(inode)) | |
24028672 | 4249 | pnfs_commit_and_return_layout(inode); |
8a1636c4 | 4250 | |
0e574af1 | 4251 | nfs_fattr_init(fattr); |
1da177e4 | 4252 | |
2669940d AA |
4253 | /* Deal with open(O_TRUNC) */ |
4254 | if (sattr->ia_valid & ATTR_OPEN) | |
cc7936f9 | 4255 | sattr->ia_valid &= ~(ATTR_MTIME|ATTR_CTIME); |
2669940d AA |
4256 | |
4257 | /* Optimization: if the end result is no change, don't RPC */ | |
cc7936f9 | 4258 | if ((sattr->ia_valid & ~(ATTR_FILE|ATTR_OPEN)) == 0) |
2669940d AA |
4259 | return 0; |
4260 | ||
d530838b | 4261 | /* Search for an existing open(O_WRITE) file */ |
659bfcd6 | 4262 | if (sattr->ia_valid & ATTR_FILE) { |
659bfcd6 TM |
4263 | |
4264 | ctx = nfs_file_open_context(sattr->ia_file); | |
29b59f94 | 4265 | if (ctx) |
504e5189 | 4266 | cred = ctx->cred; |
659bfcd6 | 4267 | } |
08e9eac4 | 4268 | |
14c43f76 DQ |
4269 | label = nfs4_label_alloc(NFS_SERVER(inode), GFP_KERNEL); |
4270 | if (IS_ERR(label)) | |
4271 | return PTR_ERR(label); | |
4272 | ||
199366f0 TM |
4273 | /* Return any delegations if we're going to change ACLs */ |
4274 | if ((sattr->ia_valid & (ATTR_MODE|ATTR_UID|ATTR_GID)) != 0) | |
c01d3645 | 4275 | nfs4_inode_make_writeable(inode); |
199366f0 | 4276 | |
29b59f94 | 4277 | status = nfs4_do_setattr(inode, cred, fattr, sattr, ctx, NULL, label); |
aa9c2669 | 4278 | if (status == 0) { |
f044636d | 4279 | nfs_setattr_update_inode(inode, sattr, fattr); |
aa9c2669 DQ |
4280 | nfs_setsecurity(inode, fattr, label); |
4281 | } | |
14c43f76 | 4282 | nfs4_label_free(label); |
1da177e4 LT |
4283 | return status; |
4284 | } | |
4285 | ||
0c2e53f1 | 4286 | static int _nfs4_proc_lookup(struct rpc_clnt *clnt, struct inode *dir, |
f7b37b8b | 4287 | struct dentry *dentry, struct nfs_fh *fhandle, |
1775fd3e | 4288 | struct nfs_fattr *fattr, struct nfs4_label *label) |
2b3de441 | 4289 | { |
0c2e53f1 | 4290 | struct nfs_server *server = NFS_SERVER(dir); |
2b3de441 DH |
4291 | int status; |
4292 | struct nfs4_lookup_arg args = { | |
4293 | .bitmask = server->attr_bitmask, | |
0c2e53f1 | 4294 | .dir_fh = NFS_FH(dir), |
f7b37b8b | 4295 | .name = &dentry->d_name, |
2b3de441 DH |
4296 | }; |
4297 | struct nfs4_lookup_res res = { | |
4298 | .server = server, | |
4299 | .fattr = fattr, | |
aa9c2669 | 4300 | .label = label, |
2b3de441 DH |
4301 | .fh = fhandle, |
4302 | }; | |
4303 | struct rpc_message msg = { | |
4304 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOOKUP], | |
4305 | .rpc_argp = &args, | |
4306 | .rpc_resp = &res, | |
4307 | }; | |
f7b37b8b TM |
4308 | unsigned short task_flags = 0; |
4309 | ||
4310 | /* Is this is an attribute revalidation, subject to softreval? */ | |
4311 | if (nfs_lookup_is_soft_revalidate(dentry)) | |
4312 | task_flags |= RPC_TASK_TIMEOUT; | |
2b3de441 | 4313 | |
aa9c2669 DQ |
4314 | args.bitmask = nfs4_bitmask(server, label); |
4315 | ||
2b3de441 DH |
4316 | nfs_fattr_init(fattr); |
4317 | ||
f7b37b8b TM |
4318 | dprintk("NFS call lookup %pd2\n", dentry); |
4319 | nfs4_init_sequence(&args.seq_args, &res.seq_res, 0, 0); | |
4320 | status = nfs4_do_call_sync(clnt, server, &msg, | |
4321 | &args.seq_args, &res.seq_res, task_flags); | |
1da177e4 LT |
4322 | dprintk("NFS reply lookup: %d\n", status); |
4323 | return status; | |
4324 | } | |
4325 | ||
72de53ec | 4326 | static void nfs_fixup_secinfo_attributes(struct nfs_fattr *fattr) |
7ebb9315 | 4327 | { |
7ebb9315 | 4328 | fattr->valid |= NFS_ATTR_FATTR_TYPE | NFS_ATTR_FATTR_MODE | |
72de53ec | 4329 | NFS_ATTR_FATTR_NLINK | NFS_ATTR_FATTR_MOUNTPOINT; |
7ebb9315 BS |
4330 | fattr->mode = S_IFDIR | S_IRUGO | S_IXUGO; |
4331 | fattr->nlink = 2; | |
4332 | } | |
4333 | ||
72de53ec | 4334 | static int nfs4_proc_lookup_common(struct rpc_clnt **clnt, struct inode *dir, |
f7b37b8b | 4335 | struct dentry *dentry, struct nfs_fh *fhandle, |
1775fd3e | 4336 | struct nfs_fattr *fattr, struct nfs4_label *label) |
1da177e4 | 4337 | { |
0688e64b TM |
4338 | struct nfs4_exception exception = { |
4339 | .interruptible = true, | |
4340 | }; | |
72de53ec | 4341 | struct rpc_clnt *client = *clnt; |
f7b37b8b | 4342 | const struct qstr *name = &dentry->d_name; |
1da177e4 LT |
4343 | int err; |
4344 | do { | |
f7b37b8b | 4345 | err = _nfs4_proc_lookup(client, dir, dentry, fhandle, fattr, label); |
078ea3df | 4346 | trace_nfs4_lookup(dir, name, err); |
72de53ec | 4347 | switch (err) { |
08ef7bd3 | 4348 | case -NFS4ERR_BADNAME: |
72de53ec BS |
4349 | err = -ENOENT; |
4350 | goto out; | |
0c2e53f1 | 4351 | case -NFS4ERR_MOVED: |
f05d147f | 4352 | err = nfs4_get_referral(client, dir, name, fattr, fhandle); |
c86c90c6 DM |
4353 | if (err == -NFS4ERR_MOVED) |
4354 | err = nfs4_handle_exception(NFS_SERVER(dir), err, &exception); | |
72de53ec | 4355 | goto out; |
0c2e53f1 | 4356 | case -NFS4ERR_WRONGSEC: |
72de53ec BS |
4357 | err = -EPERM; |
4358 | if (client != *clnt) | |
4359 | goto out; | |
66b06860 | 4360 | client = nfs4_negotiate_security(client, dir, name); |
72de53ec BS |
4361 | if (IS_ERR(client)) |
4362 | return PTR_ERR(client); | |
4363 | ||
4364 | exception.retry = 1; | |
4365 | break; | |
4366 | default: | |
4367 | err = nfs4_handle_exception(NFS_SERVER(dir), err, &exception); | |
0c2e53f1 | 4368 | } |
1da177e4 | 4369 | } while (exception.retry); |
72de53ec BS |
4370 | |
4371 | out: | |
4372 | if (err == 0) | |
4373 | *clnt = client; | |
4374 | else if (client != *clnt) | |
4375 | rpc_shutdown_client(client); | |
4376 | ||
1da177e4 LT |
4377 | return err; |
4378 | } | |
4379 | ||
f7b37b8b | 4380 | static int nfs4_proc_lookup(struct inode *dir, struct dentry *dentry, |
1775fd3e DQ |
4381 | struct nfs_fh *fhandle, struct nfs_fattr *fattr, |
4382 | struct nfs4_label *label) | |
72de53ec BS |
4383 | { |
4384 | int status; | |
4385 | struct rpc_clnt *client = NFS_CLIENT(dir); | |
4386 | ||
f7b37b8b | 4387 | status = nfs4_proc_lookup_common(&client, dir, dentry, fhandle, fattr, label); |
72de53ec BS |
4388 | if (client != NFS_CLIENT(dir)) { |
4389 | rpc_shutdown_client(client); | |
4390 | nfs_fixup_secinfo_attributes(fattr); | |
4391 | } | |
4392 | return status; | |
4393 | } | |
4394 | ||
f05d147f | 4395 | struct rpc_clnt * |
f7b37b8b | 4396 | nfs4_proc_lookup_mountpoint(struct inode *dir, struct dentry *dentry, |
f05d147f BS |
4397 | struct nfs_fh *fhandle, struct nfs_fattr *fattr) |
4398 | { | |
b72888cb | 4399 | struct rpc_clnt *client = NFS_CLIENT(dir); |
f05d147f | 4400 | int status; |
f05d147f | 4401 | |
f7b37b8b | 4402 | status = nfs4_proc_lookup_common(&client, dir, dentry, fhandle, fattr, NULL); |
b72888cb | 4403 | if (status < 0) |
f05d147f | 4404 | return ERR_PTR(status); |
b72888cb | 4405 | return (client == NFS_CLIENT(dir)) ? rpc_clone_client(client) : client; |
f05d147f BS |
4406 | } |
4407 | ||
5b5faaf6 JL |
4408 | static int _nfs4_proc_lookupp(struct inode *inode, |
4409 | struct nfs_fh *fhandle, struct nfs_fattr *fattr, | |
4410 | struct nfs4_label *label) | |
4411 | { | |
4412 | struct rpc_clnt *clnt = NFS_CLIENT(inode); | |
4413 | struct nfs_server *server = NFS_SERVER(inode); | |
4414 | int status; | |
4415 | struct nfs4_lookupp_arg args = { | |
4416 | .bitmask = server->attr_bitmask, | |
4417 | .fh = NFS_FH(inode), | |
4418 | }; | |
4419 | struct nfs4_lookupp_res res = { | |
4420 | .server = server, | |
4421 | .fattr = fattr, | |
4422 | .label = label, | |
4423 | .fh = fhandle, | |
4424 | }; | |
4425 | struct rpc_message msg = { | |
4426 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOOKUPP], | |
4427 | .rpc_argp = &args, | |
4428 | .rpc_resp = &res, | |
4429 | }; | |
76998ebb TM |
4430 | unsigned short task_flags = 0; |
4431 | ||
4432 | if (NFS_SERVER(inode)->flags & NFS_MOUNT_SOFTREVAL) | |
4433 | task_flags |= RPC_TASK_TIMEOUT; | |
5b5faaf6 JL |
4434 | |
4435 | args.bitmask = nfs4_bitmask(server, label); | |
4436 | ||
4437 | nfs_fattr_init(fattr); | |
4438 | ||
4439 | dprintk("NFS call lookupp ino=0x%lx\n", inode->i_ino); | |
4440 | status = nfs4_call_sync(clnt, server, &msg, &args.seq_args, | |
76998ebb | 4441 | &res.seq_res, task_flags); |
5b5faaf6 JL |
4442 | dprintk("NFS reply lookupp: %d\n", status); |
4443 | return status; | |
4444 | } | |
4445 | ||
4446 | static int nfs4_proc_lookupp(struct inode *inode, struct nfs_fh *fhandle, | |
4447 | struct nfs_fattr *fattr, struct nfs4_label *label) | |
4448 | { | |
0688e64b TM |
4449 | struct nfs4_exception exception = { |
4450 | .interruptible = true, | |
4451 | }; | |
5b5faaf6 JL |
4452 | int err; |
4453 | do { | |
4454 | err = _nfs4_proc_lookupp(inode, fhandle, fattr, label); | |
4455 | trace_nfs4_lookupp(inode, err); | |
4456 | err = nfs4_handle_exception(NFS_SERVER(inode), err, | |
4457 | &exception); | |
4458 | } while (exception.retry); | |
4459 | return err; | |
4460 | } | |
4461 | ||
1da177e4 LT |
4462 | static int _nfs4_proc_access(struct inode *inode, struct nfs_access_entry *entry) |
4463 | { | |
76b32999 | 4464 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 LT |
4465 | struct nfs4_accessargs args = { |
4466 | .fh = NFS_FH(inode), | |
1750d929 | 4467 | .access = entry->mask, |
76b32999 TM |
4468 | }; |
4469 | struct nfs4_accessres res = { | |
4470 | .server = server, | |
1da177e4 | 4471 | }; |
1da177e4 LT |
4472 | struct rpc_message msg = { |
4473 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_ACCESS], | |
4474 | .rpc_argp = &args, | |
4475 | .rpc_resp = &res, | |
4476 | .rpc_cred = entry->cred, | |
4477 | }; | |
aa9c2669 | 4478 | int status = 0; |
1da177e4 | 4479 | |
7c672654 | 4480 | if (!nfs4_have_delegation(inode, FMODE_READ)) { |
8bcbe7d9 TM |
4481 | res.fattr = nfs_alloc_fattr(); |
4482 | if (res.fattr == NULL) | |
4483 | return -ENOMEM; | |
4484 | args.bitmask = server->cache_consistency_bitmask; | |
4485 | } | |
7c513058 | 4486 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 | 4487 | if (!status) { |
6168f62c | 4488 | nfs_access_set_mask(entry, res.access); |
8bcbe7d9 TM |
4489 | if (res.fattr) |
4490 | nfs_refresh_inode(inode, res.fattr); | |
1da177e4 | 4491 | } |
c407d41a | 4492 | nfs_free_fattr(res.fattr); |
1da177e4 LT |
4493 | return status; |
4494 | } | |
4495 | ||
4496 | static int nfs4_proc_access(struct inode *inode, struct nfs_access_entry *entry) | |
4497 | { | |
0688e64b TM |
4498 | struct nfs4_exception exception = { |
4499 | .interruptible = true, | |
4500 | }; | |
1da177e4 LT |
4501 | int err; |
4502 | do { | |
c1578b76 TM |
4503 | err = _nfs4_proc_access(inode, entry); |
4504 | trace_nfs4_access(inode, err); | |
4505 | err = nfs4_handle_exception(NFS_SERVER(inode), err, | |
1da177e4 LT |
4506 | &exception); |
4507 | } while (exception.retry); | |
4508 | return err; | |
4509 | } | |
4510 | ||
4511 | /* | |
4512 | * TODO: For the time being, we don't try to get any attributes | |
4513 | * along with any of the zero-copy operations READ, READDIR, | |
4514 | * READLINK, WRITE. | |
4515 | * | |
4516 | * In the case of the first three, we want to put the GETATTR | |
4517 | * after the read-type operation -- this is because it is hard | |
4518 | * to predict the length of a GETATTR response in v4, and thus | |
4519 | * align the READ data correctly. This means that the GETATTR | |
4520 | * may end up partially falling into the page cache, and we should | |
4521 | * shift it into the 'tail' of the xdr_buf before processing. | |
4522 | * To do this efficiently, we need to know the total length | |
4523 | * of data received, which doesn't seem to be available outside | |
4524 | * of the RPC layer. | |
4525 | * | |
4526 | * In the case of WRITE, we also want to put the GETATTR after | |
4527 | * the operation -- in this case because we want to make sure | |
140150db | 4528 | * we get the post-operation mtime and size. |
1da177e4 LT |
4529 | * |
4530 | * Both of these changes to the XDR layer would in fact be quite | |
4531 | * minor, but I decided to leave them for a subsequent patch. | |
4532 | */ | |
4533 | static int _nfs4_proc_readlink(struct inode *inode, struct page *page, | |
4534 | unsigned int pgbase, unsigned int pglen) | |
4535 | { | |
4536 | struct nfs4_readlink args = { | |
4537 | .fh = NFS_FH(inode), | |
4538 | .pgbase = pgbase, | |
4539 | .pglen = pglen, | |
4540 | .pages = &page, | |
4541 | }; | |
f50c7000 | 4542 | struct nfs4_readlink_res res; |
1da177e4 LT |
4543 | struct rpc_message msg = { |
4544 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READLINK], | |
4545 | .rpc_argp = &args, | |
f50c7000 | 4546 | .rpc_resp = &res, |
1da177e4 LT |
4547 | }; |
4548 | ||
7c513058 | 4549 | return nfs4_call_sync(NFS_SERVER(inode)->client, NFS_SERVER(inode), &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
4550 | } |
4551 | ||
4552 | static int nfs4_proc_readlink(struct inode *inode, struct page *page, | |
4553 | unsigned int pgbase, unsigned int pglen) | |
4554 | { | |
0688e64b TM |
4555 | struct nfs4_exception exception = { |
4556 | .interruptible = true, | |
4557 | }; | |
1da177e4 LT |
4558 | int err; |
4559 | do { | |
c1578b76 TM |
4560 | err = _nfs4_proc_readlink(inode, page, pgbase, pglen); |
4561 | trace_nfs4_readlink(inode, err); | |
4562 | err = nfs4_handle_exception(NFS_SERVER(inode), err, | |
1da177e4 LT |
4563 | &exception); |
4564 | } while (exception.retry); | |
4565 | return err; | |
4566 | } | |
4567 | ||
1da177e4 | 4568 | /* |
8867fe58 | 4569 | * This is just for mknod. open(O_CREAT) will always do ->open_context(). |
1da177e4 | 4570 | */ |
1da177e4 LT |
4571 | static int |
4572 | nfs4_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr, | |
8867fe58 | 4573 | int flags) |
1da177e4 | 4574 | { |
dff25ddb | 4575 | struct nfs_server *server = NFS_SERVER(dir); |
aa9c2669 | 4576 | struct nfs4_label l, *ilabel = NULL; |
8867fe58 | 4577 | struct nfs_open_context *ctx; |
1da177e4 | 4578 | struct nfs4_state *state; |
1da177e4 LT |
4579 | int status = 0; |
4580 | ||
532d4def | 4581 | ctx = alloc_nfs_open_context(dentry, FMODE_READ, NULL); |
8867fe58 MS |
4582 | if (IS_ERR(ctx)) |
4583 | return PTR_ERR(ctx); | |
4584 | ||
aa9c2669 DQ |
4585 | ilabel = nfs4_label_init_security(dir, dentry, sattr, &l); |
4586 | ||
dff25ddb AG |
4587 | if (!(server->attr_bitmask[2] & FATTR4_WORD2_MODE_UMASK)) |
4588 | sattr->ia_mode &= ~current_umask(); | |
c5c3fb5f | 4589 | state = nfs4_do_open(dir, ctx, flags, sattr, ilabel, NULL); |
1da177e4 LT |
4590 | if (IS_ERR(state)) { |
4591 | status = PTR_ERR(state); | |
c0204fd2 | 4592 | goto out; |
1da177e4 | 4593 | } |
1da177e4 | 4594 | out: |
aa9c2669 | 4595 | nfs4_label_release_security(ilabel); |
8867fe58 | 4596 | put_nfs_open_context(ctx); |
1da177e4 LT |
4597 | return status; |
4598 | } | |
4599 | ||
3c591175 TM |
4600 | static int |
4601 | _nfs4_proc_remove(struct inode *dir, const struct qstr *name, u32 ftype) | |
1da177e4 | 4602 | { |
16e42959 | 4603 | struct nfs_server *server = NFS_SERVER(dir); |
4fdc17b2 | 4604 | struct nfs_removeargs args = { |
1da177e4 | 4605 | .fh = NFS_FH(dir), |
26fe5750 | 4606 | .name = *name, |
16e42959 | 4607 | }; |
4fdc17b2 | 4608 | struct nfs_removeres res = { |
16e42959 | 4609 | .server = server, |
1da177e4 | 4610 | }; |
1da177e4 | 4611 | struct rpc_message msg = { |
4fdc17b2 TM |
4612 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_REMOVE], |
4613 | .rpc_argp = &args, | |
4614 | .rpc_resp = &res, | |
1da177e4 | 4615 | }; |
d3129ef6 | 4616 | unsigned long timestamp = jiffies; |
778d2817 | 4617 | int status; |
1da177e4 | 4618 | |
7c513058 | 4619 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 1); |
3c591175 TM |
4620 | if (status == 0) { |
4621 | spin_lock(&dir->i_lock); | |
3c591175 TM |
4622 | /* Removing a directory decrements nlink in the parent */ |
4623 | if (ftype == NF4DIR && dir->i_nlink > 2) | |
4624 | nfs4_dec_nlink_locked(dir); | |
82eae5a4 TM |
4625 | nfs4_update_changeattr_locked(dir, &res.cinfo, timestamp, |
4626 | NFS_INO_INVALID_DATA); | |
3c591175 TM |
4627 | spin_unlock(&dir->i_lock); |
4628 | } | |
1da177e4 LT |
4629 | return status; |
4630 | } | |
4631 | ||
912678db | 4632 | static int nfs4_proc_remove(struct inode *dir, struct dentry *dentry) |
1da177e4 | 4633 | { |
0688e64b TM |
4634 | struct nfs4_exception exception = { |
4635 | .interruptible = true, | |
4636 | }; | |
912678db | 4637 | struct inode *inode = d_inode(dentry); |
1da177e4 | 4638 | int err; |
912678db | 4639 | |
c01d3645 TM |
4640 | if (inode) { |
4641 | if (inode->i_nlink == 1) | |
4642 | nfs4_inode_return_delegation(inode); | |
4643 | else | |
4644 | nfs4_inode_make_writeable(inode); | |
4645 | } | |
912678db | 4646 | do { |
3c591175 | 4647 | err = _nfs4_proc_remove(dir, &dentry->d_name, NF4REG); |
912678db TM |
4648 | trace_nfs4_remove(dir, &dentry->d_name, err); |
4649 | err = nfs4_handle_exception(NFS_SERVER(dir), err, | |
4650 | &exception); | |
4651 | } while (exception.retry); | |
4652 | return err; | |
4653 | } | |
4654 | ||
4655 | static int nfs4_proc_rmdir(struct inode *dir, const struct qstr *name) | |
4656 | { | |
0688e64b TM |
4657 | struct nfs4_exception exception = { |
4658 | .interruptible = true, | |
4659 | }; | |
912678db TM |
4660 | int err; |
4661 | ||
1da177e4 | 4662 | do { |
3c591175 | 4663 | err = _nfs4_proc_remove(dir, name, NF4DIR); |
078ea3df TM |
4664 | trace_nfs4_remove(dir, name, err); |
4665 | err = nfs4_handle_exception(NFS_SERVER(dir), err, | |
1da177e4 LT |
4666 | &exception); |
4667 | } while (exception.retry); | |
4668 | return err; | |
4669 | } | |
4670 | ||
ed7e9ad0 TM |
4671 | static void nfs4_proc_unlink_setup(struct rpc_message *msg, |
4672 | struct dentry *dentry, | |
4673 | struct inode *inode) | |
1da177e4 | 4674 | { |
e4eff1a6 TM |
4675 | struct nfs_removeargs *args = msg->rpc_argp; |
4676 | struct nfs_removeres *res = msg->rpc_resp; | |
1da177e4 | 4677 | |
977fcc2b | 4678 | res->server = NFS_SB(dentry->d_sb); |
1da177e4 | 4679 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_REMOVE]; |
fba83f34 | 4680 | nfs4_init_sequence(&args->seq_args, &res->seq_res, 1, 0); |
aa9c2669 DQ |
4681 | |
4682 | nfs_fattr_init(res->dir_attr); | |
977fcc2b TM |
4683 | |
4684 | if (inode) | |
4685 | nfs4_inode_return_delegation(inode); | |
1da177e4 LT |
4686 | } |
4687 | ||
34e137cc BS |
4688 | static void nfs4_proc_unlink_rpc_prepare(struct rpc_task *task, struct nfs_unlinkdata *data) |
4689 | { | |
42e1cca7 | 4690 | nfs4_setup_sequence(NFS_SB(data->dentry->d_sb)->nfs_client, |
d9afbd1b TM |
4691 | &data->args.seq_args, |
4692 | &data->res.seq_res, | |
4693 | task); | |
1da177e4 LT |
4694 | } |
4695 | ||
e4eff1a6 | 4696 | static int nfs4_proc_unlink_done(struct rpc_task *task, struct inode *dir) |
1da177e4 | 4697 | { |
078ea3df TM |
4698 | struct nfs_unlinkdata *data = task->tk_calldata; |
4699 | struct nfs_removeres *res = &data->res; | |
e4eff1a6 | 4700 | |
14516c3a TM |
4701 | if (!nfs4_sequence_done(task, &res->seq_res)) |
4702 | return 0; | |
8478eaa1 N |
4703 | if (nfs4_async_handle_error(task, res->server, NULL, |
4704 | &data->timeout) == -EAGAIN) | |
e4eff1a6 | 4705 | return 0; |
c40d52fe | 4706 | if (task->tk_status == 0) |
1b523ca9 FL |
4707 | nfs4_update_changeattr(dir, &res->cinfo, |
4708 | res->dir_attr->time_start, | |
4709 | NFS_INO_INVALID_DATA); | |
e4eff1a6 | 4710 | return 1; |
1da177e4 LT |
4711 | } |
4712 | ||
f2c2c552 TM |
4713 | static void nfs4_proc_rename_setup(struct rpc_message *msg, |
4714 | struct dentry *old_dentry, | |
4715 | struct dentry *new_dentry) | |
d3d4152a | 4716 | { |
d3d4152a JL |
4717 | struct nfs_renameargs *arg = msg->rpc_argp; |
4718 | struct nfs_renameres *res = msg->rpc_resp; | |
f2c2c552 TM |
4719 | struct inode *old_inode = d_inode(old_dentry); |
4720 | struct inode *new_inode = d_inode(new_dentry); | |
d3d4152a | 4721 | |
f2c2c552 | 4722 | if (old_inode) |
c01d3645 | 4723 | nfs4_inode_make_writeable(old_inode); |
f2c2c552 TM |
4724 | if (new_inode) |
4725 | nfs4_inode_return_delegation(new_inode); | |
d3d4152a | 4726 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENAME]; |
f2c2c552 | 4727 | res->server = NFS_SB(old_dentry->d_sb); |
fba83f34 | 4728 | nfs4_init_sequence(&arg->seq_args, &res->seq_res, 1, 0); |
d3d4152a JL |
4729 | } |
4730 | ||
c6bfa1a1 BS |
4731 | static void nfs4_proc_rename_rpc_prepare(struct rpc_task *task, struct nfs_renamedata *data) |
4732 | { | |
42e1cca7 | 4733 | nfs4_setup_sequence(NFS_SERVER(data->old_dir)->nfs_client, |
d9afbd1b TM |
4734 | &data->args.seq_args, |
4735 | &data->res.seq_res, | |
4736 | task); | |
d3d4152a JL |
4737 | } |
4738 | ||
4739 | static int nfs4_proc_rename_done(struct rpc_task *task, struct inode *old_dir, | |
4740 | struct inode *new_dir) | |
4741 | { | |
fbc6f7c2 TM |
4742 | struct nfs_renamedata *data = task->tk_calldata; |
4743 | struct nfs_renameres *res = &data->res; | |
d3d4152a JL |
4744 | |
4745 | if (!nfs4_sequence_done(task, &res->seq_res)) | |
4746 | return 0; | |
8478eaa1 | 4747 | if (nfs4_async_handle_error(task, res->server, NULL, &data->timeout) == -EAGAIN) |
d3d4152a JL |
4748 | return 0; |
4749 | ||
c733c49c | 4750 | if (task->tk_status == 0) { |
5636ec4e TM |
4751 | if (new_dir != old_dir) { |
4752 | /* Note: If we moved a directory, nlink will change */ | |
1b523ca9 | 4753 | nfs4_update_changeattr(old_dir, &res->old_cinfo, |
5636ec4e | 4754 | res->old_fattr->time_start, |
fabf2b34 | 4755 | NFS_INO_INVALID_NLINK | |
1b523ca9 FL |
4756 | NFS_INO_INVALID_DATA); |
4757 | nfs4_update_changeattr(new_dir, &res->new_cinfo, | |
5636ec4e | 4758 | res->new_fattr->time_start, |
fabf2b34 | 4759 | NFS_INO_INVALID_NLINK | |
1b523ca9 | 4760 | NFS_INO_INVALID_DATA); |
5636ec4e | 4761 | } else |
1b523ca9 | 4762 | nfs4_update_changeattr(old_dir, &res->old_cinfo, |
5636ec4e | 4763 | res->old_fattr->time_start, |
1b523ca9 | 4764 | NFS_INO_INVALID_DATA); |
c733c49c | 4765 | } |
d3d4152a JL |
4766 | return 1; |
4767 | } | |
4768 | ||
beffb8fe | 4769 | static int _nfs4_proc_link(struct inode *inode, struct inode *dir, const struct qstr *name) |
1da177e4 | 4770 | { |
91ba2eee | 4771 | struct nfs_server *server = NFS_SERVER(inode); |
2f28dc38 | 4772 | __u32 bitmask[NFS4_BITMASK_SZ]; |
1da177e4 LT |
4773 | struct nfs4_link_arg arg = { |
4774 | .fh = NFS_FH(inode), | |
4775 | .dir_fh = NFS_FH(dir), | |
4776 | .name = name, | |
2f28dc38 | 4777 | .bitmask = bitmask, |
91ba2eee | 4778 | }; |
91ba2eee TM |
4779 | struct nfs4_link_res res = { |
4780 | .server = server, | |
1775fd3e | 4781 | .label = NULL, |
1da177e4 | 4782 | }; |
1da177e4 LT |
4783 | struct rpc_message msg = { |
4784 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LINK], | |
4785 | .rpc_argp = &arg, | |
91ba2eee | 4786 | .rpc_resp = &res, |
1da177e4 | 4787 | }; |
136f2627 TM |
4788 | int status = -ENOMEM; |
4789 | ||
4790 | res.fattr = nfs_alloc_fattr(); | |
778d2817 | 4791 | if (res.fattr == NULL) |
136f2627 | 4792 | goto out; |
1da177e4 | 4793 | |
14c43f76 DQ |
4794 | res.label = nfs4_label_alloc(server, GFP_KERNEL); |
4795 | if (IS_ERR(res.label)) { | |
4796 | status = PTR_ERR(res.label); | |
4797 | goto out; | |
4798 | } | |
4799 | ||
c01d3645 | 4800 | nfs4_inode_make_writeable(inode); |
a71029b8 TM |
4801 | nfs4_bitmap_copy_adjust(bitmask, nfs4_bitmask(server, res.label), inode, |
4802 | NFS_INO_INVALID_CHANGE); | |
7c513058 | 4803 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
91ba2eee | 4804 | if (!status) { |
1b523ca9 FL |
4805 | nfs4_update_changeattr(dir, &res.cinfo, res.fattr->time_start, |
4806 | NFS_INO_INVALID_DATA); | |
1301e421 | 4807 | nfs4_inc_nlink(inode); |
aa9c2669 DQ |
4808 | status = nfs_post_op_update_inode(inode, res.fattr); |
4809 | if (!status) | |
4810 | nfs_setsecurity(inode, res.fattr, res.label); | |
91ba2eee | 4811 | } |
14c43f76 DQ |
4812 | |
4813 | ||
4814 | nfs4_label_free(res.label); | |
4815 | ||
136f2627 | 4816 | out: |
136f2627 | 4817 | nfs_free_fattr(res.fattr); |
1da177e4 LT |
4818 | return status; |
4819 | } | |
4820 | ||
beffb8fe | 4821 | static int nfs4_proc_link(struct inode *inode, struct inode *dir, const struct qstr *name) |
1da177e4 | 4822 | { |
0688e64b TM |
4823 | struct nfs4_exception exception = { |
4824 | .interruptible = true, | |
4825 | }; | |
1da177e4 LT |
4826 | int err; |
4827 | do { | |
4828 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
4829 | _nfs4_proc_link(inode, dir, name), | |
4830 | &exception); | |
4831 | } while (exception.retry); | |
4832 | return err; | |
4833 | } | |
4834 | ||
57dc9a57 TM |
4835 | struct nfs4_createdata { |
4836 | struct rpc_message msg; | |
4837 | struct nfs4_create_arg arg; | |
4838 | struct nfs4_create_res res; | |
4839 | struct nfs_fh fh; | |
4840 | struct nfs_fattr fattr; | |
1775fd3e | 4841 | struct nfs4_label *label; |
57dc9a57 TM |
4842 | }; |
4843 | ||
4844 | static struct nfs4_createdata *nfs4_alloc_createdata(struct inode *dir, | |
beffb8fe | 4845 | const struct qstr *name, struct iattr *sattr, u32 ftype) |
57dc9a57 TM |
4846 | { |
4847 | struct nfs4_createdata *data; | |
4848 | ||
4849 | data = kzalloc(sizeof(*data), GFP_KERNEL); | |
4850 | if (data != NULL) { | |
4851 | struct nfs_server *server = NFS_SERVER(dir); | |
4852 | ||
14c43f76 DQ |
4853 | data->label = nfs4_label_alloc(server, GFP_KERNEL); |
4854 | if (IS_ERR(data->label)) | |
4855 | goto out_free; | |
4856 | ||
57dc9a57 TM |
4857 | data->msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CREATE]; |
4858 | data->msg.rpc_argp = &data->arg; | |
4859 | data->msg.rpc_resp = &data->res; | |
4860 | data->arg.dir_fh = NFS_FH(dir); | |
4861 | data->arg.server = server; | |
4862 | data->arg.name = name; | |
4863 | data->arg.attrs = sattr; | |
4864 | data->arg.ftype = ftype; | |
aa9c2669 | 4865 | data->arg.bitmask = nfs4_bitmask(server, data->label); |
dff25ddb | 4866 | data->arg.umask = current_umask(); |
57dc9a57 TM |
4867 | data->res.server = server; |
4868 | data->res.fh = &data->fh; | |
4869 | data->res.fattr = &data->fattr; | |
1775fd3e | 4870 | data->res.label = data->label; |
57dc9a57 | 4871 | nfs_fattr_init(data->res.fattr); |
57dc9a57 TM |
4872 | } |
4873 | return data; | |
14c43f76 DQ |
4874 | out_free: |
4875 | kfree(data); | |
4876 | return NULL; | |
57dc9a57 TM |
4877 | } |
4878 | ||
4879 | static int nfs4_do_create(struct inode *dir, struct dentry *dentry, struct nfs4_createdata *data) | |
4880 | { | |
7c513058 | 4881 | int status = nfs4_call_sync(NFS_SERVER(dir)->client, NFS_SERVER(dir), &data->msg, |
e73b83f2 | 4882 | &data->arg.seq_args, &data->res.seq_res, 1); |
57dc9a57 | 4883 | if (status == 0) { |
3c591175 | 4884 | spin_lock(&dir->i_lock); |
3c591175 TM |
4885 | /* Creating a directory bumps nlink in the parent */ |
4886 | if (data->arg.ftype == NF4DIR) | |
4887 | nfs4_inc_nlink_locked(dir); | |
82eae5a4 TM |
4888 | nfs4_update_changeattr_locked(dir, &data->res.dir_cinfo, |
4889 | data->res.fattr->time_start, | |
4890 | NFS_INO_INVALID_DATA); | |
3c591175 | 4891 | spin_unlock(&dir->i_lock); |
1775fd3e | 4892 | status = nfs_instantiate(dentry, data->res.fh, data->res.fattr, data->res.label); |
57dc9a57 TM |
4893 | } |
4894 | return status; | |
4895 | } | |
4896 | ||
4897 | static void nfs4_free_createdata(struct nfs4_createdata *data) | |
4898 | { | |
14c43f76 | 4899 | nfs4_label_free(data->label); |
57dc9a57 TM |
4900 | kfree(data); |
4901 | } | |
4902 | ||
4f390c15 | 4903 | static int _nfs4_proc_symlink(struct inode *dir, struct dentry *dentry, |
1775fd3e DQ |
4904 | struct page *page, unsigned int len, struct iattr *sattr, |
4905 | struct nfs4_label *label) | |
1da177e4 | 4906 | { |
57dc9a57 TM |
4907 | struct nfs4_createdata *data; |
4908 | int status = -ENAMETOOLONG; | |
1da177e4 | 4909 | |
94a6d753 | 4910 | if (len > NFS4_MAXPATHLEN) |
57dc9a57 | 4911 | goto out; |
4f390c15 | 4912 | |
57dc9a57 TM |
4913 | status = -ENOMEM; |
4914 | data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4LNK); | |
4915 | if (data == NULL) | |
4916 | goto out; | |
4917 | ||
4918 | data->msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SYMLINK]; | |
4919 | data->arg.u.symlink.pages = &page; | |
4920 | data->arg.u.symlink.len = len; | |
1775fd3e | 4921 | data->arg.label = label; |
1da177e4 | 4922 | |
57dc9a57 TM |
4923 | status = nfs4_do_create(dir, dentry, data); |
4924 | ||
4925 | nfs4_free_createdata(data); | |
4926 | out: | |
1da177e4 LT |
4927 | return status; |
4928 | } | |
4929 | ||
4f390c15 | 4930 | static int nfs4_proc_symlink(struct inode *dir, struct dentry *dentry, |
94a6d753 | 4931 | struct page *page, unsigned int len, struct iattr *sattr) |
1da177e4 | 4932 | { |
0688e64b TM |
4933 | struct nfs4_exception exception = { |
4934 | .interruptible = true, | |
4935 | }; | |
aa9c2669 | 4936 | struct nfs4_label l, *label = NULL; |
1da177e4 | 4937 | int err; |
aa9c2669 DQ |
4938 | |
4939 | label = nfs4_label_init_security(dir, dentry, sattr, &l); | |
4940 | ||
1da177e4 | 4941 | do { |
078ea3df TM |
4942 | err = _nfs4_proc_symlink(dir, dentry, page, len, sattr, label); |
4943 | trace_nfs4_symlink(dir, &dentry->d_name, err); | |
4944 | err = nfs4_handle_exception(NFS_SERVER(dir), err, | |
1da177e4 LT |
4945 | &exception); |
4946 | } while (exception.retry); | |
aa9c2669 DQ |
4947 | |
4948 | nfs4_label_release_security(label); | |
1da177e4 LT |
4949 | return err; |
4950 | } | |
4951 | ||
4952 | static int _nfs4_proc_mkdir(struct inode *dir, struct dentry *dentry, | |
1775fd3e | 4953 | struct iattr *sattr, struct nfs4_label *label) |
1da177e4 | 4954 | { |
57dc9a57 TM |
4955 | struct nfs4_createdata *data; |
4956 | int status = -ENOMEM; | |
1da177e4 | 4957 | |
57dc9a57 TM |
4958 | data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4DIR); |
4959 | if (data == NULL) | |
4960 | goto out; | |
4961 | ||
1775fd3e | 4962 | data->arg.label = label; |
57dc9a57 TM |
4963 | status = nfs4_do_create(dir, dentry, data); |
4964 | ||
4965 | nfs4_free_createdata(data); | |
4966 | out: | |
1da177e4 LT |
4967 | return status; |
4968 | } | |
4969 | ||
4970 | static int nfs4_proc_mkdir(struct inode *dir, struct dentry *dentry, | |
4971 | struct iattr *sattr) | |
4972 | { | |
dff25ddb | 4973 | struct nfs_server *server = NFS_SERVER(dir); |
0688e64b TM |
4974 | struct nfs4_exception exception = { |
4975 | .interruptible = true, | |
4976 | }; | |
aa9c2669 | 4977 | struct nfs4_label l, *label = NULL; |
1da177e4 | 4978 | int err; |
a8a5da99 | 4979 | |
aa9c2669 DQ |
4980 | label = nfs4_label_init_security(dir, dentry, sattr, &l); |
4981 | ||
dff25ddb AG |
4982 | if (!(server->attr_bitmask[2] & FATTR4_WORD2_MODE_UMASK)) |
4983 | sattr->ia_mode &= ~current_umask(); | |
1da177e4 | 4984 | do { |
078ea3df TM |
4985 | err = _nfs4_proc_mkdir(dir, dentry, sattr, label); |
4986 | trace_nfs4_mkdir(dir, &dentry->d_name, err); | |
4987 | err = nfs4_handle_exception(NFS_SERVER(dir), err, | |
1da177e4 LT |
4988 | &exception); |
4989 | } while (exception.retry); | |
aa9c2669 DQ |
4990 | nfs4_label_release_security(label); |
4991 | ||
1da177e4 LT |
4992 | return err; |
4993 | } | |
4994 | ||
82e22a5e TM |
4995 | static int _nfs4_proc_readdir(struct nfs_readdir_arg *nr_arg, |
4996 | struct nfs_readdir_res *nr_res) | |
1da177e4 | 4997 | { |
82e22a5e | 4998 | struct inode *dir = d_inode(nr_arg->dentry); |
05ad9175 | 4999 | struct nfs_server *server = NFS_SERVER(dir); |
1da177e4 LT |
5000 | struct nfs4_readdir_arg args = { |
5001 | .fh = NFS_FH(dir), | |
82e22a5e | 5002 | .pages = nr_arg->pages, |
1da177e4 | 5003 | .pgbase = 0, |
82e22a5e TM |
5004 | .count = nr_arg->page_len, |
5005 | .plus = nr_arg->plus, | |
1da177e4 LT |
5006 | }; |
5007 | struct nfs4_readdir_res res; | |
5008 | struct rpc_message msg = { | |
5009 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READDIR], | |
5010 | .rpc_argp = &args, | |
5011 | .rpc_resp = &res, | |
82e22a5e | 5012 | .rpc_cred = nr_arg->cred, |
1da177e4 LT |
5013 | }; |
5014 | int status; | |
5015 | ||
82e22a5e TM |
5016 | dprintk("%s: dentry = %pd2, cookie = %llu\n", __func__, |
5017 | nr_arg->dentry, (unsigned long long)nr_arg->cookie); | |
05ad9175 OK |
5018 | if (!(server->caps & NFS_CAP_SECURITY_LABEL)) |
5019 | args.bitmask = server->attr_bitmask_nl; | |
5020 | else | |
5021 | args.bitmask = server->attr_bitmask; | |
5022 | ||
82e22a5e | 5023 | nfs4_setup_readdir(nr_arg->cookie, nr_arg->verf, nr_arg->dentry, &args); |
1da177e4 | 5024 | res.pgbase = args.pgbase; |
05ad9175 OK |
5025 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, |
5026 | &res.seq_res, 0); | |
ac396128 | 5027 | if (status >= 0) { |
82e22a5e | 5028 | memcpy(nr_res->verf, res.verifier.data, NFS4_VERIFIER_SIZE); |
ac396128 TM |
5029 | status += args.pgbase; |
5030 | } | |
c4812998 TM |
5031 | |
5032 | nfs_invalidate_atime(dir); | |
5033 | ||
3110ff80 | 5034 | dprintk("%s: returns %d\n", __func__, status); |
1da177e4 LT |
5035 | return status; |
5036 | } | |
5037 | ||
82e22a5e TM |
5038 | static int nfs4_proc_readdir(struct nfs_readdir_arg *arg, |
5039 | struct nfs_readdir_res *res) | |
1da177e4 | 5040 | { |
0688e64b TM |
5041 | struct nfs4_exception exception = { |
5042 | .interruptible = true, | |
5043 | }; | |
1da177e4 LT |
5044 | int err; |
5045 | do { | |
82e22a5e TM |
5046 | err = _nfs4_proc_readdir(arg, res); |
5047 | trace_nfs4_readdir(d_inode(arg->dentry), err); | |
5048 | err = nfs4_handle_exception(NFS_SERVER(d_inode(arg->dentry)), | |
5049 | err, &exception); | |
1da177e4 LT |
5050 | } while (exception.retry); |
5051 | return err; | |
5052 | } | |
5053 | ||
5054 | static int _nfs4_proc_mknod(struct inode *dir, struct dentry *dentry, | |
aa9c2669 | 5055 | struct iattr *sattr, struct nfs4_label *label, dev_t rdev) |
1da177e4 | 5056 | { |
57dc9a57 TM |
5057 | struct nfs4_createdata *data; |
5058 | int mode = sattr->ia_mode; | |
5059 | int status = -ENOMEM; | |
1da177e4 | 5060 | |
57dc9a57 TM |
5061 | data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4SOCK); |
5062 | if (data == NULL) | |
5063 | goto out; | |
5064 | ||
1da177e4 | 5065 | if (S_ISFIFO(mode)) |
57dc9a57 | 5066 | data->arg.ftype = NF4FIFO; |
1da177e4 | 5067 | else if (S_ISBLK(mode)) { |
57dc9a57 TM |
5068 | data->arg.ftype = NF4BLK; |
5069 | data->arg.u.device.specdata1 = MAJOR(rdev); | |
5070 | data->arg.u.device.specdata2 = MINOR(rdev); | |
1da177e4 LT |
5071 | } |
5072 | else if (S_ISCHR(mode)) { | |
57dc9a57 TM |
5073 | data->arg.ftype = NF4CHR; |
5074 | data->arg.u.device.specdata1 = MAJOR(rdev); | |
5075 | data->arg.u.device.specdata2 = MINOR(rdev); | |
4ea8fed5 TM |
5076 | } else if (!S_ISSOCK(mode)) { |
5077 | status = -EINVAL; | |
5078 | goto out_free; | |
1da177e4 | 5079 | } |
1775fd3e | 5080 | |
aa9c2669 | 5081 | data->arg.label = label; |
57dc9a57 | 5082 | status = nfs4_do_create(dir, dentry, data); |
4ea8fed5 | 5083 | out_free: |
57dc9a57 TM |
5084 | nfs4_free_createdata(data); |
5085 | out: | |
1da177e4 LT |
5086 | return status; |
5087 | } | |
5088 | ||
5089 | static int nfs4_proc_mknod(struct inode *dir, struct dentry *dentry, | |
5090 | struct iattr *sattr, dev_t rdev) | |
5091 | { | |
dff25ddb | 5092 | struct nfs_server *server = NFS_SERVER(dir); |
0688e64b TM |
5093 | struct nfs4_exception exception = { |
5094 | .interruptible = true, | |
5095 | }; | |
aa9c2669 | 5096 | struct nfs4_label l, *label = NULL; |
1da177e4 | 5097 | int err; |
a8a5da99 | 5098 | |
aa9c2669 DQ |
5099 | label = nfs4_label_init_security(dir, dentry, sattr, &l); |
5100 | ||
dff25ddb AG |
5101 | if (!(server->attr_bitmask[2] & FATTR4_WORD2_MODE_UMASK)) |
5102 | sattr->ia_mode &= ~current_umask(); | |
1da177e4 | 5103 | do { |
078ea3df TM |
5104 | err = _nfs4_proc_mknod(dir, dentry, sattr, label, rdev); |
5105 | trace_nfs4_mknod(dir, &dentry->d_name, err); | |
5106 | err = nfs4_handle_exception(NFS_SERVER(dir), err, | |
1da177e4 LT |
5107 | &exception); |
5108 | } while (exception.retry); | |
aa9c2669 DQ |
5109 | |
5110 | nfs4_label_release_security(label); | |
5111 | ||
1da177e4 LT |
5112 | return err; |
5113 | } | |
5114 | ||
5115 | static int _nfs4_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle, | |
5116 | struct nfs_fsstat *fsstat) | |
5117 | { | |
5118 | struct nfs4_statfs_arg args = { | |
5119 | .fh = fhandle, | |
5120 | .bitmask = server->attr_bitmask, | |
5121 | }; | |
24ad148a BH |
5122 | struct nfs4_statfs_res res = { |
5123 | .fsstat = fsstat, | |
5124 | }; | |
1da177e4 LT |
5125 | struct rpc_message msg = { |
5126 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_STATFS], | |
5127 | .rpc_argp = &args, | |
24ad148a | 5128 | .rpc_resp = &res, |
1da177e4 LT |
5129 | }; |
5130 | ||
0e574af1 | 5131 | nfs_fattr_init(fsstat->fattr); |
7c513058 | 5132 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
5133 | } |
5134 | ||
5135 | static int nfs4_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsstat *fsstat) | |
5136 | { | |
0688e64b TM |
5137 | struct nfs4_exception exception = { |
5138 | .interruptible = true, | |
5139 | }; | |
1da177e4 LT |
5140 | int err; |
5141 | do { | |
5142 | err = nfs4_handle_exception(server, | |
5143 | _nfs4_proc_statfs(server, fhandle, fsstat), | |
5144 | &exception); | |
5145 | } while (exception.retry); | |
5146 | return err; | |
5147 | } | |
5148 | ||
5149 | static int _nfs4_do_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, | |
5150 | struct nfs_fsinfo *fsinfo) | |
5151 | { | |
5152 | struct nfs4_fsinfo_arg args = { | |
5153 | .fh = fhandle, | |
5154 | .bitmask = server->attr_bitmask, | |
5155 | }; | |
3dda5e43 BH |
5156 | struct nfs4_fsinfo_res res = { |
5157 | .fsinfo = fsinfo, | |
5158 | }; | |
1da177e4 LT |
5159 | struct rpc_message msg = { |
5160 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FSINFO], | |
5161 | .rpc_argp = &args, | |
3dda5e43 | 5162 | .rpc_resp = &res, |
1da177e4 LT |
5163 | }; |
5164 | ||
7c513058 | 5165 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
5166 | } |
5167 | ||
5168 | static int nfs4_do_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsinfo *fsinfo) | |
5169 | { | |
0688e64b TM |
5170 | struct nfs4_exception exception = { |
5171 | .interruptible = true, | |
5172 | }; | |
1da177e4 LT |
5173 | int err; |
5174 | ||
5175 | do { | |
83ca7f5a | 5176 | err = _nfs4_do_fsinfo(server, fhandle, fsinfo); |
b5f875a9 | 5177 | trace_nfs4_fsinfo(server, fhandle, fsinfo->fattr, err); |
83ca7f5a | 5178 | if (err == 0) { |
7dc2993a | 5179 | nfs4_set_lease_period(server->nfs_client, fsinfo->lease_time * HZ); |
83ca7f5a CL |
5180 | break; |
5181 | } | |
5182 | err = nfs4_handle_exception(server, err, &exception); | |
1da177e4 LT |
5183 | } while (exception.retry); |
5184 | return err; | |
5185 | } | |
5186 | ||
5187 | static int nfs4_proc_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsinfo *fsinfo) | |
5188 | { | |
e38eb650 BS |
5189 | int error; |
5190 | ||
0e574af1 | 5191 | nfs_fattr_init(fsinfo->fattr); |
e38eb650 | 5192 | error = nfs4_do_fsinfo(server, fhandle, fsinfo); |
dc182549 PT |
5193 | if (error == 0) { |
5194 | /* block layout checks this! */ | |
5195 | server->pnfs_blksize = fsinfo->blksize; | |
ca440c38 | 5196 | set_pnfs_layoutdriver(server, fhandle, fsinfo); |
dc182549 | 5197 | } |
e38eb650 BS |
5198 | |
5199 | return error; | |
1da177e4 LT |
5200 | } |
5201 | ||
5202 | static int _nfs4_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle, | |
5203 | struct nfs_pathconf *pathconf) | |
5204 | { | |
5205 | struct nfs4_pathconf_arg args = { | |
5206 | .fh = fhandle, | |
5207 | .bitmask = server->attr_bitmask, | |
5208 | }; | |
d45b2989 BH |
5209 | struct nfs4_pathconf_res res = { |
5210 | .pathconf = pathconf, | |
5211 | }; | |
1da177e4 LT |
5212 | struct rpc_message msg = { |
5213 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_PATHCONF], | |
5214 | .rpc_argp = &args, | |
d45b2989 | 5215 | .rpc_resp = &res, |
1da177e4 LT |
5216 | }; |
5217 | ||
5218 | /* None of the pathconf attributes are mandatory to implement */ | |
5219 | if ((args.bitmask[0] & nfs4_pathconf_bitmap[0]) == 0) { | |
5220 | memset(pathconf, 0, sizeof(*pathconf)); | |
5221 | return 0; | |
5222 | } | |
5223 | ||
0e574af1 | 5224 | nfs_fattr_init(pathconf->fattr); |
7c513058 | 5225 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
5226 | } |
5227 | ||
5228 | static int nfs4_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle, | |
5229 | struct nfs_pathconf *pathconf) | |
5230 | { | |
0688e64b TM |
5231 | struct nfs4_exception exception = { |
5232 | .interruptible = true, | |
5233 | }; | |
1da177e4 LT |
5234 | int err; |
5235 | ||
5236 | do { | |
5237 | err = nfs4_handle_exception(server, | |
5238 | _nfs4_proc_pathconf(server, fhandle, pathconf), | |
5239 | &exception); | |
5240 | } while (exception.retry); | |
5241 | return err; | |
5242 | } | |
5243 | ||
5521abfd | 5244 | int nfs4_set_rw_stateid(nfs4_stateid *stateid, |
9b206149 TM |
5245 | const struct nfs_open_context *ctx, |
5246 | const struct nfs_lock_context *l_ctx, | |
5247 | fmode_t fmode) | |
5248 | { | |
17393475 | 5249 | return nfs4_select_rw_stateid(ctx->state, fmode, l_ctx, stateid, NULL); |
9b206149 TM |
5250 | } |
5251 | EXPORT_SYMBOL_GPL(nfs4_set_rw_stateid); | |
5252 | ||
5521abfd TM |
5253 | static bool nfs4_stateid_is_current(nfs4_stateid *stateid, |
5254 | const struct nfs_open_context *ctx, | |
5255 | const struct nfs_lock_context *l_ctx, | |
5256 | fmode_t fmode) | |
5257 | { | |
d49dd117 | 5258 | nfs4_stateid _current_stateid; |
5521abfd | 5259 | |
e1253be0 | 5260 | /* If the current stateid represents a lost lock, then exit */ |
d49dd117 | 5261 | if (nfs4_set_rw_stateid(&_current_stateid, ctx, l_ctx, fmode) == -EIO) |
e1253be0 | 5262 | return true; |
d49dd117 | 5263 | return nfs4_stateid_match(stateid, &_current_stateid); |
5521abfd TM |
5264 | } |
5265 | ||
5266 | static bool nfs4_error_stateid_expired(int err) | |
5267 | { | |
5268 | switch (err) { | |
5269 | case -NFS4ERR_DELEG_REVOKED: | |
5270 | case -NFS4ERR_ADMIN_REVOKED: | |
5271 | case -NFS4ERR_BAD_STATEID: | |
5272 | case -NFS4ERR_STALE_STATEID: | |
5273 | case -NFS4ERR_OLD_STATEID: | |
5274 | case -NFS4ERR_OPENMODE: | |
5275 | case -NFS4ERR_EXPIRED: | |
5276 | return true; | |
5277 | } | |
5278 | return false; | |
5279 | } | |
5280 | ||
d45f60c6 | 5281 | static int nfs4_read_done_cb(struct rpc_task *task, struct nfs_pgio_header *hdr) |
1da177e4 | 5282 | { |
d45f60c6 | 5283 | struct nfs_server *server = NFS_SERVER(hdr->inode); |
1da177e4 | 5284 | |
d45f60c6 | 5285 | trace_nfs4_read(hdr, task->tk_status); |
9c27869d TM |
5286 | if (task->tk_status < 0) { |
5287 | struct nfs4_exception exception = { | |
5288 | .inode = hdr->inode, | |
5289 | .state = hdr->args.context->state, | |
5290 | .stateid = &hdr->args.stateid, | |
5291 | }; | |
5292 | task->tk_status = nfs4_async_handle_exception(task, | |
5293 | server, task->tk_status, &exception); | |
5294 | if (exception.retry) { | |
5295 | rpc_restart_call_prepare(task); | |
5296 | return -EAGAIN; | |
5297 | } | |
1da177e4 | 5298 | } |
8850df99 | 5299 | |
1da177e4 | 5300 | if (task->tk_status > 0) |
d45f60c6 | 5301 | renew_lease(server, hdr->timestamp); |
ec06c096 | 5302 | return 0; |
1da177e4 LT |
5303 | } |
5304 | ||
5521abfd | 5305 | static bool nfs4_read_stateid_changed(struct rpc_task *task, |
3c6b899c | 5306 | struct nfs_pgio_args *args) |
5521abfd TM |
5307 | { |
5308 | ||
5309 | if (!nfs4_error_stateid_expired(task->tk_status) || | |
5310 | nfs4_stateid_is_current(&args->stateid, | |
5311 | args->context, | |
5312 | args->lock_context, | |
5313 | FMODE_READ)) | |
5314 | return false; | |
5315 | rpc_restart_call_prepare(task); | |
5316 | return true; | |
5317 | } | |
5318 | ||
c5675526 AS |
5319 | static bool nfs4_read_plus_not_supported(struct rpc_task *task, |
5320 | struct nfs_pgio_header *hdr) | |
cbdabc7f | 5321 | { |
c5675526 AS |
5322 | struct nfs_server *server = NFS_SERVER(hdr->inode); |
5323 | struct rpc_message *msg = &task->tk_msg; | |
cbdabc7f | 5324 | |
c5675526 AS |
5325 | if (msg->rpc_proc == &nfs4_procedures[NFSPROC4_CLNT_READ_PLUS] && |
5326 | server->caps & NFS_CAP_READ_PLUS && task->tk_status == -ENOTSUPP) { | |
5327 | server->caps &= ~NFS_CAP_READ_PLUS; | |
5328 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READ]; | |
5329 | rpc_restart_call_prepare(task); | |
5330 | return true; | |
5331 | } | |
5332 | return false; | |
5333 | } | |
5334 | ||
5335 | static int nfs4_read_done(struct rpc_task *task, struct nfs_pgio_header *hdr) | |
5336 | { | |
cbdabc7f AA |
5337 | dprintk("--> %s\n", __func__); |
5338 | ||
d45f60c6 | 5339 | if (!nfs4_sequence_done(task, &hdr->res.seq_res)) |
cbdabc7f | 5340 | return -EAGAIN; |
d45f60c6 | 5341 | if (nfs4_read_stateid_changed(task, &hdr->args)) |
5521abfd | 5342 | return -EAGAIN; |
c5675526 AS |
5343 | if (nfs4_read_plus_not_supported(task, hdr)) |
5344 | return -EAGAIN; | |
bfc505de TM |
5345 | if (task->tk_status > 0) |
5346 | nfs_invalidate_atime(hdr->inode); | |
d45f60c6 WAA |
5347 | return hdr->pgio_done_cb ? hdr->pgio_done_cb(task, hdr) : |
5348 | nfs4_read_done_cb(task, hdr); | |
cbdabc7f AA |
5349 | } |
5350 | ||
21e31401 | 5351 | #if defined CONFIG_NFS_V4_2 && defined CONFIG_NFS_V4_2_READ_PLUS |
5c3485bb TM |
5352 | static void nfs42_read_plus_support(struct nfs_pgio_header *hdr, |
5353 | struct rpc_message *msg) | |
c5675526 | 5354 | { |
5c3485bb TM |
5355 | /* Note: We don't use READ_PLUS with pNFS yet */ |
5356 | if (nfs_server_capable(hdr->inode, NFS_CAP_READ_PLUS) && !hdr->ds_clp) | |
c5675526 | 5357 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READ_PLUS]; |
c5675526 AS |
5358 | } |
5359 | #else | |
5c3485bb TM |
5360 | static void nfs42_read_plus_support(struct nfs_pgio_header *hdr, |
5361 | struct rpc_message *msg) | |
c5675526 | 5362 | { |
c5675526 AS |
5363 | } |
5364 | #endif /* CONFIG_NFS_V4_2 */ | |
5365 | ||
d45f60c6 WAA |
5366 | static void nfs4_proc_read_setup(struct nfs_pgio_header *hdr, |
5367 | struct rpc_message *msg) | |
1da177e4 | 5368 | { |
d45f60c6 | 5369 | hdr->timestamp = jiffies; |
ca857cc1 TM |
5370 | if (!hdr->pgio_done_cb) |
5371 | hdr->pgio_done_cb = nfs4_read_done_cb; | |
5c3485bb TM |
5372 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READ]; |
5373 | nfs42_read_plus_support(hdr, msg); | |
fba83f34 | 5374 | nfs4_init_sequence(&hdr->args.seq_args, &hdr->res.seq_res, 0, 0); |
1da177e4 LT |
5375 | } |
5376 | ||
d45f60c6 WAA |
5377 | static int nfs4_proc_pgio_rpc_prepare(struct rpc_task *task, |
5378 | struct nfs_pgio_header *hdr) | |
ea7c3303 | 5379 | { |
42e1cca7 | 5380 | if (nfs4_setup_sequence(NFS_SERVER(hdr->inode)->nfs_client, |
d45f60c6 WAA |
5381 | &hdr->args.seq_args, |
5382 | &hdr->res.seq_res, | |
9b206149 | 5383 | task)) |
ef1820f9 | 5384 | return 0; |
d45f60c6 WAA |
5385 | if (nfs4_set_rw_stateid(&hdr->args.stateid, hdr->args.context, |
5386 | hdr->args.lock_context, | |
fbe77c30 | 5387 | hdr->rw_mode) == -EIO) |
ef1820f9 | 5388 | return -EIO; |
d45f60c6 | 5389 | if (unlikely(test_bit(NFS_CONTEXT_BAD, &hdr->args.context->flags))) |
ef1820f9 N |
5390 | return -EIO; |
5391 | return 0; | |
1da177e4 LT |
5392 | } |
5393 | ||
d45f60c6 WAA |
5394 | static int nfs4_write_done_cb(struct rpc_task *task, |
5395 | struct nfs_pgio_header *hdr) | |
1da177e4 | 5396 | { |
d45f60c6 | 5397 | struct inode *inode = hdr->inode; |
8478eaa1 | 5398 | |
d45f60c6 | 5399 | trace_nfs4_write(hdr, task->tk_status); |
9c27869d TM |
5400 | if (task->tk_status < 0) { |
5401 | struct nfs4_exception exception = { | |
5402 | .inode = hdr->inode, | |
5403 | .state = hdr->args.context->state, | |
5404 | .stateid = &hdr->args.stateid, | |
5405 | }; | |
5406 | task->tk_status = nfs4_async_handle_exception(task, | |
5407 | NFS_SERVER(inode), task->tk_status, | |
5408 | &exception); | |
5409 | if (exception.retry) { | |
5410 | rpc_restart_call_prepare(task); | |
5411 | return -EAGAIN; | |
5412 | } | |
1da177e4 | 5413 | } |
4f9838c7 | 5414 | if (task->tk_status >= 0) { |
d45f60c6 | 5415 | renew_lease(NFS_SERVER(inode), hdr->timestamp); |
a08a8cd3 | 5416 | nfs_writeback_update_inode(hdr); |
4f9838c7 | 5417 | } |
788e7a89 | 5418 | return 0; |
1da177e4 LT |
5419 | } |
5420 | ||
5521abfd | 5421 | static bool nfs4_write_stateid_changed(struct rpc_task *task, |
3c6b899c | 5422 | struct nfs_pgio_args *args) |
5521abfd TM |
5423 | { |
5424 | ||
5425 | if (!nfs4_error_stateid_expired(task->tk_status) || | |
5426 | nfs4_stateid_is_current(&args->stateid, | |
5427 | args->context, | |
5428 | args->lock_context, | |
5429 | FMODE_WRITE)) | |
5430 | return false; | |
5431 | rpc_restart_call_prepare(task); | |
5432 | return true; | |
5433 | } | |
5434 | ||
d45f60c6 | 5435 | static int nfs4_write_done(struct rpc_task *task, struct nfs_pgio_header *hdr) |
b029bc9b | 5436 | { |
d45f60c6 | 5437 | if (!nfs4_sequence_done(task, &hdr->res.seq_res)) |
b029bc9b | 5438 | return -EAGAIN; |
d45f60c6 | 5439 | if (nfs4_write_stateid_changed(task, &hdr->args)) |
5521abfd | 5440 | return -EAGAIN; |
d45f60c6 WAA |
5441 | return hdr->pgio_done_cb ? hdr->pgio_done_cb(task, hdr) : |
5442 | nfs4_write_done_cb(task, hdr); | |
b029bc9b FI |
5443 | } |
5444 | ||
5a37f851 | 5445 | static |
d45f60c6 | 5446 | bool nfs4_write_need_cache_consistency_data(struct nfs_pgio_header *hdr) |
a69aef14 | 5447 | { |
5a37f851 | 5448 | /* Don't request attributes for pNFS or O_DIRECT writes */ |
d45f60c6 | 5449 | if (hdr->ds_clp != NULL || hdr->dreq != NULL) |
5a37f851 TM |
5450 | return false; |
5451 | /* Otherwise, request attributes if and only if we don't hold | |
5452 | * a delegation | |
5453 | */ | |
011e2a7f | 5454 | return nfs4_have_delegation(hdr->inode, FMODE_READ) == 0; |
a69aef14 | 5455 | } |
a69aef14 | 5456 | |
332d1a03 TM |
5457 | static void nfs4_bitmask_set(__u32 bitmask[NFS4_BITMASK_SZ], const __u32 *src, |
5458 | struct inode *inode, struct nfs_server *server, | |
5459 | struct nfs4_label *label) | |
76bd5c01 | 5460 | { |
76bd5c01 | 5461 | unsigned long cache_validity = READ_ONCE(NFS_I(inode)->cache_validity); |
332d1a03 | 5462 | unsigned int i; |
76bd5c01 | 5463 | |
332d1a03 | 5464 | memcpy(bitmask, src, sizeof(*bitmask) * NFS4_BITMASK_SZ); |
76bd5c01 | 5465 | |
13c0b082 | 5466 | if (cache_validity & NFS_INO_INVALID_CHANGE) |
332d1a03 | 5467 | bitmask[0] |= FATTR4_WORD0_CHANGE; |
76bd5c01 OK |
5468 | if (cache_validity & NFS_INO_INVALID_ATIME) |
5469 | bitmask[1] |= FATTR4_WORD1_TIME_ACCESS; | |
720869eb TM |
5470 | if (cache_validity & NFS_INO_INVALID_MODE) |
5471 | bitmask[1] |= FATTR4_WORD1_MODE; | |
45901a23 | 5472 | if (cache_validity & NFS_INO_INVALID_OTHER) |
720869eb | 5473 | bitmask[1] |= FATTR4_WORD1_OWNER | FATTR4_WORD1_OWNER_GROUP; |
fabf2b34 TM |
5474 | if (cache_validity & NFS_INO_INVALID_NLINK) |
5475 | bitmask[1] |= FATTR4_WORD1_NUMLINKS; | |
45901a23 | 5476 | if (label && label->len && cache_validity & NFS_INO_INVALID_LABEL) |
76bd5c01 | 5477 | bitmask[2] |= FATTR4_WORD2_SECURITY_LABEL; |
45901a23 TM |
5478 | if (cache_validity & NFS_INO_INVALID_CTIME) |
5479 | bitmask[1] |= FATTR4_WORD1_TIME_METADATA; | |
76bd5c01 OK |
5480 | if (cache_validity & NFS_INO_INVALID_MTIME) |
5481 | bitmask[1] |= FATTR4_WORD1_TIME_MODIFY; | |
76bd5c01 OK |
5482 | if (cache_validity & NFS_INO_INVALID_BLOCKS) |
5483 | bitmask[1] |= FATTR4_WORD1_SPACE_USED; | |
332d1a03 | 5484 | |
cc7f2dae | 5485 | if (cache_validity & NFS_INO_INVALID_SIZE) |
332d1a03 TM |
5486 | bitmask[0] |= FATTR4_WORD0_SIZE; |
5487 | ||
5488 | for (i = 0; i < NFS4_BITMASK_SZ; i++) | |
5489 | bitmask[i] &= server->attr_bitmask[i]; | |
76bd5c01 OK |
5490 | } |
5491 | ||
d45f60c6 | 5492 | static void nfs4_proc_write_setup(struct nfs_pgio_header *hdr, |
fb91fb0e AS |
5493 | struct rpc_message *msg, |
5494 | struct rpc_clnt **clnt) | |
1da177e4 | 5495 | { |
d45f60c6 | 5496 | struct nfs_server *server = NFS_SERVER(hdr->inode); |
bdc7f021 | 5497 | |
d45f60c6 WAA |
5498 | if (!nfs4_write_need_cache_consistency_data(hdr)) { |
5499 | hdr->args.bitmask = NULL; | |
5500 | hdr->res.fattr = NULL; | |
76bd5c01 | 5501 | } else { |
332d1a03 TM |
5502 | nfs4_bitmask_set(hdr->args.bitmask_store, |
5503 | server->cache_consistency_bitmask, | |
5504 | hdr->inode, server, NULL); | |
5505 | hdr->args.bitmask = hdr->args.bitmask_store; | |
76bd5c01 | 5506 | } |
5a37f851 | 5507 | |
d45f60c6 WAA |
5508 | if (!hdr->pgio_done_cb) |
5509 | hdr->pgio_done_cb = nfs4_write_done_cb; | |
5510 | hdr->res.server = server; | |
5511 | hdr->timestamp = jiffies; | |
1da177e4 | 5512 | |
bdc7f021 | 5513 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_WRITE]; |
cd1b659d | 5514 | nfs4_init_sequence(&hdr->args.seq_args, &hdr->res.seq_res, 0, 0); |
fb91fb0e | 5515 | nfs4_state_protect_write(server->nfs_client, clnt, msg, hdr); |
1da177e4 LT |
5516 | } |
5517 | ||
0b7c0153 | 5518 | static void nfs4_proc_commit_rpc_prepare(struct rpc_task *task, struct nfs_commit_data *data) |
c6cb80d0 | 5519 | { |
42e1cca7 | 5520 | nfs4_setup_sequence(NFS_SERVER(data->inode)->nfs_client, |
d9afbd1b TM |
5521 | &data->args.seq_args, |
5522 | &data->res.seq_res, | |
5523 | task); | |
1da177e4 LT |
5524 | } |
5525 | ||
0b7c0153 | 5526 | static int nfs4_commit_done_cb(struct rpc_task *task, struct nfs_commit_data *data) |
1da177e4 | 5527 | { |
1da177e4 | 5528 | struct inode *inode = data->inode; |
14516c3a | 5529 | |
cc668ab3 | 5530 | trace_nfs4_commit(data, task->tk_status); |
8478eaa1 N |
5531 | if (nfs4_async_handle_error(task, NFS_SERVER(inode), |
5532 | NULL, NULL) == -EAGAIN) { | |
d00c5d43 | 5533 | rpc_restart_call_prepare(task); |
788e7a89 | 5534 | return -EAGAIN; |
1da177e4 | 5535 | } |
788e7a89 | 5536 | return 0; |
1da177e4 LT |
5537 | } |
5538 | ||
0b7c0153 | 5539 | static int nfs4_commit_done(struct rpc_task *task, struct nfs_commit_data *data) |
5f452431 FI |
5540 | { |
5541 | if (!nfs4_sequence_done(task, &data->res.seq_res)) | |
5542 | return -EAGAIN; | |
0b7c0153 | 5543 | return data->commit_done_cb(task, data); |
5f452431 FI |
5544 | } |
5545 | ||
e9ae1ee2 AS |
5546 | static void nfs4_proc_commit_setup(struct nfs_commit_data *data, struct rpc_message *msg, |
5547 | struct rpc_clnt **clnt) | |
1da177e4 | 5548 | { |
788e7a89 | 5549 | struct nfs_server *server = NFS_SERVER(data->inode); |
988b6dce | 5550 | |
0b7c0153 FI |
5551 | if (data->commit_done_cb == NULL) |
5552 | data->commit_done_cb = nfs4_commit_done_cb; | |
4f9838c7 | 5553 | data->res.server = server; |
bdc7f021 | 5554 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_COMMIT]; |
fba83f34 | 5555 | nfs4_init_sequence(&data->args.seq_args, &data->res.seq_res, 1, 0); |
e9ae1ee2 | 5556 | nfs4_state_protect(server->nfs_client, NFS_SP4_MACH_CRED_COMMIT, clnt, msg); |
1da177e4 LT |
5557 | } |
5558 | ||
6b8d84e2 OK |
5559 | static int _nfs4_proc_commit(struct file *dst, struct nfs_commitargs *args, |
5560 | struct nfs_commitres *res) | |
5561 | { | |
5562 | struct inode *dst_inode = file_inode(dst); | |
5563 | struct nfs_server *server = NFS_SERVER(dst_inode); | |
5564 | struct rpc_message msg = { | |
5565 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_COMMIT], | |
5566 | .rpc_argp = args, | |
5567 | .rpc_resp = res, | |
5568 | }; | |
5569 | ||
5570 | args->fh = NFS_FH(dst_inode); | |
5571 | return nfs4_call_sync(server->client, server, &msg, | |
5572 | &args->seq_args, &res->seq_res, 1); | |
5573 | } | |
5574 | ||
5575 | int nfs4_proc_commit(struct file *dst, __u64 offset, __u32 count, struct nfs_commitres *res) | |
5576 | { | |
5577 | struct nfs_commitargs args = { | |
5578 | .offset = offset, | |
5579 | .count = count, | |
5580 | }; | |
5581 | struct nfs_server *dst_server = NFS_SERVER(file_inode(dst)); | |
5582 | struct nfs4_exception exception = { }; | |
5583 | int status; | |
5584 | ||
5585 | do { | |
5586 | status = _nfs4_proc_commit(dst, &args, res); | |
5587 | status = nfs4_handle_exception(dst_server, status, &exception); | |
5588 | } while (exception.retry); | |
5589 | ||
5590 | return status; | |
5591 | } | |
5592 | ||
9bc4e3ca CL |
5593 | struct nfs4_renewdata { |
5594 | struct nfs_client *client; | |
5595 | unsigned long timestamp; | |
5596 | }; | |
5597 | ||
1da177e4 LT |
5598 | /* |
5599 | * nfs4_proc_async_renew(): This is not one of the nfs_rpc_ops; it is a special | |
5600 | * standalone procedure for queueing an asynchronous RENEW. | |
5601 | */ | |
9bc4e3ca | 5602 | static void nfs4_renew_release(void *calldata) |
dc96aef9 | 5603 | { |
9bc4e3ca CL |
5604 | struct nfs4_renewdata *data = calldata; |
5605 | struct nfs_client *clp = data->client; | |
dc96aef9 | 5606 | |
212bf41d | 5607 | if (refcount_read(&clp->cl_count) > 1) |
0851de06 AB |
5608 | nfs4_schedule_state_renewal(clp); |
5609 | nfs_put_client(clp); | |
9bc4e3ca | 5610 | kfree(data); |
dc96aef9 AB |
5611 | } |
5612 | ||
9bc4e3ca | 5613 | static void nfs4_renew_done(struct rpc_task *task, void *calldata) |
1da177e4 | 5614 | { |
9bc4e3ca CL |
5615 | struct nfs4_renewdata *data = calldata; |
5616 | struct nfs_client *clp = data->client; | |
5617 | unsigned long timestamp = data->timestamp; | |
1da177e4 | 5618 | |
c6d01c6f | 5619 | trace_nfs4_renew_async(clp, task->tk_status); |
f8aba1e8 CL |
5620 | switch (task->tk_status) { |
5621 | case 0: | |
5622 | break; | |
5623 | case -NFS4ERR_LEASE_MOVED: | |
5624 | nfs4_schedule_lease_moved_recovery(clp); | |
5625 | break; | |
5626 | default: | |
95baa25c | 5627 | /* Unless we're shutting down, schedule state recovery! */ |
042b60be TM |
5628 | if (test_bit(NFS_CS_RENEWD, &clp->cl_res_state) == 0) |
5629 | return; | |
5630 | if (task->tk_status != NFS4ERR_CB_PATH_DOWN) { | |
0400a6b0 | 5631 | nfs4_schedule_lease_recovery(clp); |
042b60be TM |
5632 | return; |
5633 | } | |
5634 | nfs4_schedule_path_down_recovery(clp); | |
1da177e4 | 5635 | } |
452e9352 | 5636 | do_renew_lease(clp, timestamp); |
1da177e4 LT |
5637 | } |
5638 | ||
963d8fe5 TM |
5639 | static const struct rpc_call_ops nfs4_renew_ops = { |
5640 | .rpc_call_done = nfs4_renew_done, | |
dc96aef9 | 5641 | .rpc_release = nfs4_renew_release, |
963d8fe5 TM |
5642 | }; |
5643 | ||
a52458b4 | 5644 | static int nfs4_proc_async_renew(struct nfs_client *clp, const struct cred *cred, unsigned renew_flags) |
1da177e4 LT |
5645 | { |
5646 | struct rpc_message msg = { | |
5647 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENEW], | |
5648 | .rpc_argp = clp, | |
b4454fe1 | 5649 | .rpc_cred = cred, |
1da177e4 | 5650 | }; |
9bc4e3ca | 5651 | struct nfs4_renewdata *data; |
1da177e4 | 5652 | |
2f60ea6b TM |
5653 | if (renew_flags == 0) |
5654 | return 0; | |
212bf41d | 5655 | if (!refcount_inc_not_zero(&clp->cl_count)) |
0851de06 | 5656 | return -EIO; |
b569ad34 | 5657 | data = kmalloc(sizeof(*data), GFP_NOFS); |
5c737cb2 DW |
5658 | if (data == NULL) { |
5659 | nfs_put_client(clp); | |
9bc4e3ca | 5660 | return -ENOMEM; |
5c737cb2 | 5661 | } |
9bc4e3ca CL |
5662 | data->client = clp; |
5663 | data->timestamp = jiffies; | |
bc7a05ca | 5664 | return rpc_call_async(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT, |
9bc4e3ca | 5665 | &nfs4_renew_ops, data); |
1da177e4 LT |
5666 | } |
5667 | ||
a52458b4 | 5668 | static int nfs4_proc_renew(struct nfs_client *clp, const struct cred *cred) |
1da177e4 LT |
5669 | { |
5670 | struct rpc_message msg = { | |
5671 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENEW], | |
5672 | .rpc_argp = clp, | |
b4454fe1 | 5673 | .rpc_cred = cred, |
1da177e4 LT |
5674 | }; |
5675 | unsigned long now = jiffies; | |
5676 | int status; | |
5677 | ||
bc7a05ca | 5678 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
1da177e4 LT |
5679 | if (status < 0) |
5680 | return status; | |
452e9352 | 5681 | do_renew_lease(clp, now); |
1da177e4 LT |
5682 | return 0; |
5683 | } | |
5684 | ||
aa1870af BF |
5685 | static inline int nfs4_server_supports_acls(struct nfs_server *server) |
5686 | { | |
7dd7d959 | 5687 | return server->caps & NFS_CAP_ACLS; |
aa1870af BF |
5688 | } |
5689 | ||
21f498c2 TM |
5690 | /* Assuming that XATTR_SIZE_MAX is a multiple of PAGE_SIZE, and that |
5691 | * it's OK to put sizeof(void) * (XATTR_SIZE_MAX/PAGE_SIZE) bytes on | |
aa1870af BF |
5692 | * the stack. |
5693 | */ | |
21f498c2 | 5694 | #define NFS4ACL_MAXPAGES DIV_ROUND_UP(XATTR_SIZE_MAX, PAGE_SIZE) |
aa1870af | 5695 | |
ccde1e9c | 5696 | int nfs4_buf_to_pages_noslab(const void *buf, size_t buflen, |
8fbcf237 | 5697 | struct page **pages) |
e9e3d724 NH |
5698 | { |
5699 | struct page *newpage, **spages; | |
5700 | int rc = 0; | |
5701 | size_t len; | |
5702 | spages = pages; | |
5703 | ||
5704 | do { | |
21f498c2 | 5705 | len = min_t(size_t, PAGE_SIZE, buflen); |
e9e3d724 NH |
5706 | newpage = alloc_page(GFP_KERNEL); |
5707 | ||
5708 | if (newpage == NULL) | |
5709 | goto unwind; | |
5710 | memcpy(page_address(newpage), buf, len); | |
d9b67e1e AS |
5711 | buf += len; |
5712 | buflen -= len; | |
e9e3d724 NH |
5713 | *pages++ = newpage; |
5714 | rc++; | |
5715 | } while (buflen != 0); | |
5716 | ||
5717 | return rc; | |
5718 | ||
5719 | unwind: | |
5720 | for(; rc > 0; rc--) | |
5721 | __free_page(spages[rc-1]); | |
5722 | return -ENOMEM; | |
5723 | } | |
5724 | ||
e50a1c2e BF |
5725 | struct nfs4_cached_acl { |
5726 | int cached; | |
5727 | size_t len; | |
5601cda8 | 5728 | char data[]; |
e50a1c2e BF |
5729 | }; |
5730 | ||
5731 | static void nfs4_set_cached_acl(struct inode *inode, struct nfs4_cached_acl *acl) | |
5732 | { | |
5733 | struct nfs_inode *nfsi = NFS_I(inode); | |
5734 | ||
5735 | spin_lock(&inode->i_lock); | |
5736 | kfree(nfsi->nfs4_acl); | |
5737 | nfsi->nfs4_acl = acl; | |
5738 | spin_unlock(&inode->i_lock); | |
5739 | } | |
5740 | ||
5741 | static void nfs4_zap_acl_attr(struct inode *inode) | |
5742 | { | |
5743 | nfs4_set_cached_acl(inode, NULL); | |
5744 | } | |
5745 | ||
5746 | static inline ssize_t nfs4_read_cached_acl(struct inode *inode, char *buf, size_t buflen) | |
5747 | { | |
5748 | struct nfs_inode *nfsi = NFS_I(inode); | |
5749 | struct nfs4_cached_acl *acl; | |
5750 | int ret = -ENOENT; | |
5751 | ||
5752 | spin_lock(&inode->i_lock); | |
5753 | acl = nfsi->nfs4_acl; | |
5754 | if (acl == NULL) | |
5755 | goto out; | |
5756 | if (buf == NULL) /* user is just asking for length */ | |
5757 | goto out_len; | |
5758 | if (acl->cached == 0) | |
5759 | goto out; | |
5760 | ret = -ERANGE; /* see getxattr(2) man page */ | |
5761 | if (acl->len > buflen) | |
5762 | goto out; | |
5763 | memcpy(buf, acl->data, acl->len); | |
5764 | out_len: | |
5765 | ret = acl->len; | |
5766 | out: | |
5767 | spin_unlock(&inode->i_lock); | |
5768 | return ret; | |
5769 | } | |
5770 | ||
5794d21e | 5771 | static void nfs4_write_cached_acl(struct inode *inode, struct page **pages, size_t pgbase, size_t acl_len) |
e50a1c2e BF |
5772 | { |
5773 | struct nfs4_cached_acl *acl; | |
b291f1b1 | 5774 | size_t buflen = sizeof(*acl) + acl_len; |
e50a1c2e | 5775 | |
1f1ea6c2 | 5776 | if (buflen <= PAGE_SIZE) { |
b291f1b1 | 5777 | acl = kmalloc(buflen, GFP_KERNEL); |
e50a1c2e BF |
5778 | if (acl == NULL) |
5779 | goto out; | |
5780 | acl->cached = 1; | |
5794d21e | 5781 | _copy_from_pages(acl->data, pages, pgbase, acl_len); |
e50a1c2e BF |
5782 | } else { |
5783 | acl = kmalloc(sizeof(*acl), GFP_KERNEL); | |
5784 | if (acl == NULL) | |
5785 | goto out; | |
5786 | acl->cached = 0; | |
5787 | } | |
5788 | acl->len = acl_len; | |
5789 | out: | |
5790 | nfs4_set_cached_acl(inode, acl); | |
5791 | } | |
5792 | ||
bf118a34 AA |
5793 | /* |
5794 | * The getxattr API returns the required buffer length when called with a | |
5795 | * NULL buf. The NFSv4 acl tool then calls getxattr again after allocating | |
5796 | * the required buf. On a NULL buf, we send a page of data to the server | |
5797 | * guessing that the ACL request can be serviced by a page. If so, we cache | |
5798 | * up to the page of ACL data, and the 2nd call to getxattr is serviced by | |
5799 | * the cache. If not so, we throw away the page, and cache the required | |
5800 | * length. The next getxattr call will then produce another round trip to | |
5801 | * the server, this time with the input buf of the required size. | |
5802 | */ | |
16b4289c | 5803 | static ssize_t __nfs4_get_acl_uncached(struct inode *inode, void *buf, size_t buflen) |
aa1870af | 5804 | { |
62a1573f | 5805 | struct page **pages; |
aa1870af BF |
5806 | struct nfs_getaclargs args = { |
5807 | .fh = NFS_FH(inode), | |
aa1870af BF |
5808 | .acl_len = buflen, |
5809 | }; | |
663c79b3 BH |
5810 | struct nfs_getaclres res = { |
5811 | .acl_len = buflen, | |
5812 | }; | |
aa1870af BF |
5813 | struct rpc_message msg = { |
5814 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETACL], | |
5815 | .rpc_argp = &args, | |
663c79b3 | 5816 | .rpc_resp = &res, |
aa1870af | 5817 | }; |
62a1573f | 5818 | unsigned int npages; |
21f498c2 | 5819 | int ret = -ENOMEM, i; |
62a1573f OK |
5820 | struct nfs_server *server = NFS_SERVER(inode); |
5821 | ||
5822 | if (buflen == 0) | |
5823 | buflen = server->rsize; | |
5824 | ||
5825 | npages = DIV_ROUND_UP(buflen, PAGE_SIZE) + 1; | |
5826 | pages = kmalloc_array(npages, sizeof(struct page *), GFP_NOFS); | |
5827 | if (!pages) | |
5828 | return -ENOMEM; | |
aa1870af | 5829 | |
62a1573f | 5830 | args.acl_pages = pages; |
5a006899 | 5831 | |
bf118a34 AA |
5832 | for (i = 0; i < npages; i++) { |
5833 | pages[i] = alloc_page(GFP_KERNEL); | |
5834 | if (!pages[i]) | |
5835 | goto out_free; | |
e50a1c2e | 5836 | } |
5a006899 SP |
5837 | |
5838 | /* for decoding across pages */ | |
5839 | res.acl_scratch = alloc_page(GFP_KERNEL); | |
5840 | if (!res.acl_scratch) | |
5841 | goto out_free; | |
5842 | ||
bf118a34 | 5843 | args.acl_len = npages * PAGE_SIZE; |
5a006899 | 5844 | |
de040bec | 5845 | dprintk("%s buf %p buflen %zu npages %d args.acl_len %zu\n", |
bf118a34 AA |
5846 | __func__, buf, buflen, npages, args.acl_len); |
5847 | ret = nfs4_call_sync(NFS_SERVER(inode)->client, NFS_SERVER(inode), | |
5848 | &msg, &args.seq_args, &res.seq_res, 0); | |
e50a1c2e BF |
5849 | if (ret) |
5850 | goto out_free; | |
bf118a34 | 5851 | |
1f1ea6c2 TM |
5852 | /* Handle the case where the passed-in buffer is too short */ |
5853 | if (res.acl_flags & NFS4_ACL_TRUNC) { | |
5854 | /* Did the user only issue a request for the acl length? */ | |
5855 | if (buf == NULL) | |
5856 | goto out_ok; | |
e50a1c2e | 5857 | ret = -ERANGE; |
1f1ea6c2 | 5858 | goto out_free; |
e50a1c2e | 5859 | } |
1f1ea6c2 | 5860 | nfs4_write_cached_acl(inode, pages, res.acl_data_offset, res.acl_len); |
7d3e91a8 SW |
5861 | if (buf) { |
5862 | if (res.acl_len > buflen) { | |
5863 | ret = -ERANGE; | |
5864 | goto out_free; | |
5865 | } | |
1f1ea6c2 | 5866 | _copy_from_pages(buf, pages, res.acl_data_offset, res.acl_len); |
7d3e91a8 | 5867 | } |
1f1ea6c2 TM |
5868 | out_ok: |
5869 | ret = res.acl_len; | |
e50a1c2e | 5870 | out_free: |
bf118a34 AA |
5871 | for (i = 0; i < npages; i++) |
5872 | if (pages[i]) | |
5873 | __free_page(pages[i]); | |
331818f1 TM |
5874 | if (res.acl_scratch) |
5875 | __free_page(res.acl_scratch); | |
62a1573f | 5876 | kfree(pages); |
aa1870af BF |
5877 | return ret; |
5878 | } | |
5879 | ||
16b4289c TM |
5880 | static ssize_t nfs4_get_acl_uncached(struct inode *inode, void *buf, size_t buflen) |
5881 | { | |
0688e64b TM |
5882 | struct nfs4_exception exception = { |
5883 | .interruptible = true, | |
5884 | }; | |
16b4289c TM |
5885 | ssize_t ret; |
5886 | do { | |
5887 | ret = __nfs4_get_acl_uncached(inode, buf, buflen); | |
c1578b76 | 5888 | trace_nfs4_get_acl(inode, ret); |
16b4289c TM |
5889 | if (ret >= 0) |
5890 | break; | |
5891 | ret = nfs4_handle_exception(NFS_SERVER(inode), ret, &exception); | |
5892 | } while (exception.retry); | |
5893 | return ret; | |
5894 | } | |
5895 | ||
e50a1c2e BF |
5896 | static ssize_t nfs4_proc_get_acl(struct inode *inode, void *buf, size_t buflen) |
5897 | { | |
5898 | struct nfs_server *server = NFS_SERVER(inode); | |
5899 | int ret; | |
5900 | ||
5901 | if (!nfs4_server_supports_acls(server)) | |
5902 | return -EOPNOTSUPP; | |
1f3208b2 | 5903 | ret = nfs_revalidate_inode(inode, NFS_INO_INVALID_CHANGE); |
e50a1c2e BF |
5904 | if (ret < 0) |
5905 | return ret; | |
08a22b39 AK |
5906 | if (NFS_I(inode)->cache_validity & NFS_INO_INVALID_ACL) |
5907 | nfs_zap_acl_cache(inode); | |
e50a1c2e BF |
5908 | ret = nfs4_read_cached_acl(inode, buf, buflen); |
5909 | if (ret != -ENOENT) | |
bf118a34 AA |
5910 | /* -ENOENT is returned if there is no ACL or if there is an ACL |
5911 | * but no cached acl data, just the acl length */ | |
e50a1c2e BF |
5912 | return ret; |
5913 | return nfs4_get_acl_uncached(inode, buf, buflen); | |
5914 | } | |
5915 | ||
16b4289c | 5916 | static int __nfs4_proc_set_acl(struct inode *inode, const void *buf, size_t buflen) |
4b580ee3 BF |
5917 | { |
5918 | struct nfs_server *server = NFS_SERVER(inode); | |
5919 | struct page *pages[NFS4ACL_MAXPAGES]; | |
5920 | struct nfs_setaclargs arg = { | |
5921 | .fh = NFS_FH(inode), | |
5922 | .acl_pages = pages, | |
5923 | .acl_len = buflen, | |
5924 | }; | |
73c403a9 | 5925 | struct nfs_setaclres res; |
4b580ee3 BF |
5926 | struct rpc_message msg = { |
5927 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETACL], | |
5928 | .rpc_argp = &arg, | |
73c403a9 | 5929 | .rpc_resp = &res, |
4b580ee3 | 5930 | }; |
21f498c2 | 5931 | unsigned int npages = DIV_ROUND_UP(buflen, PAGE_SIZE); |
e9e3d724 | 5932 | int ret, i; |
4b580ee3 | 5933 | |
4f8be1f5 BF |
5934 | /* You can't remove system.nfs4_acl: */ |
5935 | if (buflen == 0) | |
5936 | return -EINVAL; | |
4b580ee3 BF |
5937 | if (!nfs4_server_supports_acls(server)) |
5938 | return -EOPNOTSUPP; | |
21f498c2 TM |
5939 | if (npages > ARRAY_SIZE(pages)) |
5940 | return -ERANGE; | |
ccde1e9c | 5941 | i = nfs4_buf_to_pages_noslab(buf, buflen, arg.acl_pages); |
e9e3d724 NH |
5942 | if (i < 0) |
5943 | return i; | |
c01d3645 | 5944 | nfs4_inode_make_writeable(inode); |
7c513058 | 5945 | ret = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
e9e3d724 NH |
5946 | |
5947 | /* | |
5948 | * Free each page after tx, so the only ref left is | |
5949 | * held by the network stack | |
5950 | */ | |
5951 | for (; i > 0; i--) | |
5952 | put_page(pages[i-1]); | |
5953 | ||
08a22b39 AK |
5954 | /* |
5955 | * Acl update can result in inode attribute update. | |
5956 | * so mark the attribute cache invalid. | |
5957 | */ | |
5958 | spin_lock(&inode->i_lock); | |
b6f80a2e TM |
5959 | nfs_set_cache_invalid(inode, NFS_INO_INVALID_CHANGE | |
5960 | NFS_INO_INVALID_CTIME | | |
5961 | NFS_INO_REVAL_FORCED); | |
08a22b39 | 5962 | spin_unlock(&inode->i_lock); |
f41f7418 TM |
5963 | nfs_access_zap_cache(inode); |
5964 | nfs_zap_acl_cache(inode); | |
4b580ee3 BF |
5965 | return ret; |
5966 | } | |
5967 | ||
16b4289c TM |
5968 | static int nfs4_proc_set_acl(struct inode *inode, const void *buf, size_t buflen) |
5969 | { | |
5970 | struct nfs4_exception exception = { }; | |
5971 | int err; | |
5972 | do { | |
c1578b76 TM |
5973 | err = __nfs4_proc_set_acl(inode, buf, buflen); |
5974 | trace_nfs4_set_acl(inode, err); | |
f8849e20 DN |
5975 | if (err == -NFS4ERR_BADOWNER || err == -NFS4ERR_BADNAME) { |
5976 | /* | |
5977 | * no need to retry since the kernel | |
5978 | * isn't involved in encoding the ACEs. | |
5979 | */ | |
5980 | err = -EINVAL; | |
5981 | break; | |
5982 | } | |
c1578b76 | 5983 | err = nfs4_handle_exception(NFS_SERVER(inode), err, |
16b4289c TM |
5984 | &exception); |
5985 | } while (exception.retry); | |
5986 | return err; | |
5987 | } | |
5988 | ||
aa9c2669 DQ |
5989 | #ifdef CONFIG_NFS_V4_SECURITY_LABEL |
5990 | static int _nfs4_get_security_label(struct inode *inode, void *buf, | |
5991 | size_t buflen) | |
5992 | { | |
5993 | struct nfs_server *server = NFS_SERVER(inode); | |
5994 | struct nfs_fattr fattr; | |
5995 | struct nfs4_label label = {0, 0, buflen, buf}; | |
5996 | ||
5997 | u32 bitmask[3] = { 0, 0, FATTR4_WORD2_SECURITY_LABEL }; | |
fcb63a9b | 5998 | struct nfs4_getattr_arg arg = { |
aa9c2669 DQ |
5999 | .fh = NFS_FH(inode), |
6000 | .bitmask = bitmask, | |
6001 | }; | |
6002 | struct nfs4_getattr_res res = { | |
6003 | .fattr = &fattr, | |
6004 | .label = &label, | |
6005 | .server = server, | |
6006 | }; | |
6007 | struct rpc_message msg = { | |
6008 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETATTR], | |
fcb63a9b | 6009 | .rpc_argp = &arg, |
aa9c2669 DQ |
6010 | .rpc_resp = &res, |
6011 | }; | |
6012 | int ret; | |
6013 | ||
6014 | nfs_fattr_init(&fattr); | |
6015 | ||
fcb63a9b | 6016 | ret = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 0); |
aa9c2669 DQ |
6017 | if (ret) |
6018 | return ret; | |
6019 | if (!(fattr.valid & NFS_ATTR_FATTR_V4_SECURITY_LABEL)) | |
6020 | return -ENOENT; | |
53cb2454 | 6021 | return label.len; |
aa9c2669 DQ |
6022 | } |
6023 | ||
6024 | static int nfs4_get_security_label(struct inode *inode, void *buf, | |
6025 | size_t buflen) | |
6026 | { | |
0688e64b TM |
6027 | struct nfs4_exception exception = { |
6028 | .interruptible = true, | |
6029 | }; | |
aa9c2669 DQ |
6030 | int err; |
6031 | ||
6032 | if (!nfs_server_capable(inode, NFS_CAP_SECURITY_LABEL)) | |
6033 | return -EOPNOTSUPP; | |
6034 | ||
6035 | do { | |
c1578b76 TM |
6036 | err = _nfs4_get_security_label(inode, buf, buflen); |
6037 | trace_nfs4_get_security_label(inode, err); | |
6038 | err = nfs4_handle_exception(NFS_SERVER(inode), err, | |
aa9c2669 DQ |
6039 | &exception); |
6040 | } while (exception.retry); | |
6041 | return err; | |
6042 | } | |
6043 | ||
6044 | static int _nfs4_do_set_security_label(struct inode *inode, | |
6045 | struct nfs4_label *ilabel, | |
6046 | struct nfs_fattr *fattr, | |
6047 | struct nfs4_label *olabel) | |
6048 | { | |
6049 | ||
6050 | struct iattr sattr = {0}; | |
6051 | struct nfs_server *server = NFS_SERVER(inode); | |
6052 | const u32 bitmask[3] = { 0, 0, FATTR4_WORD2_SECURITY_LABEL }; | |
12207f69 | 6053 | struct nfs_setattrargs arg = { |
d9b67e1e AS |
6054 | .fh = NFS_FH(inode), |
6055 | .iap = &sattr, | |
aa9c2669 DQ |
6056 | .server = server, |
6057 | .bitmask = bitmask, | |
6058 | .label = ilabel, | |
6059 | }; | |
6060 | struct nfs_setattrres res = { | |
6061 | .fattr = fattr, | |
6062 | .label = olabel, | |
6063 | .server = server, | |
6064 | }; | |
6065 | struct rpc_message msg = { | |
d9b67e1e AS |
6066 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETATTR], |
6067 | .rpc_argp = &arg, | |
6068 | .rpc_resp = &res, | |
aa9c2669 DQ |
6069 | }; |
6070 | int status; | |
6071 | ||
12207f69 | 6072 | nfs4_stateid_copy(&arg.stateid, &zero_stateid); |
aa9c2669 | 6073 | |
12207f69 | 6074 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
aa9c2669 DQ |
6075 | if (status) |
6076 | dprintk("%s failed: %d\n", __func__, status); | |
6077 | ||
6078 | return status; | |
6079 | } | |
6080 | ||
6081 | static int nfs4_do_set_security_label(struct inode *inode, | |
6082 | struct nfs4_label *ilabel, | |
6083 | struct nfs_fattr *fattr, | |
6084 | struct nfs4_label *olabel) | |
6085 | { | |
6086 | struct nfs4_exception exception = { }; | |
6087 | int err; | |
6088 | ||
6089 | do { | |
c1578b76 TM |
6090 | err = _nfs4_do_set_security_label(inode, ilabel, |
6091 | fattr, olabel); | |
6092 | trace_nfs4_set_security_label(inode, err); | |
6093 | err = nfs4_handle_exception(NFS_SERVER(inode), err, | |
aa9c2669 DQ |
6094 | &exception); |
6095 | } while (exception.retry); | |
6096 | return err; | |
6097 | } | |
6098 | ||
6099 | static int | |
59301226 | 6100 | nfs4_set_security_label(struct inode *inode, const void *buf, size_t buflen) |
aa9c2669 DQ |
6101 | { |
6102 | struct nfs4_label ilabel, *olabel = NULL; | |
6103 | struct nfs_fattr fattr; | |
aa9c2669 DQ |
6104 | int status; |
6105 | ||
6106 | if (!nfs_server_capable(inode, NFS_CAP_SECURITY_LABEL)) | |
6107 | return -EOPNOTSUPP; | |
6108 | ||
6109 | nfs_fattr_init(&fattr); | |
6110 | ||
6111 | ilabel.pi = 0; | |
6112 | ilabel.lfs = 0; | |
6113 | ilabel.label = (char *)buf; | |
6114 | ilabel.len = buflen; | |
6115 | ||
aa9c2669 DQ |
6116 | olabel = nfs4_label_alloc(NFS_SERVER(inode), GFP_KERNEL); |
6117 | if (IS_ERR(olabel)) { | |
6118 | status = -PTR_ERR(olabel); | |
6119 | goto out; | |
6120 | } | |
6121 | ||
6122 | status = nfs4_do_set_security_label(inode, &ilabel, &fattr, olabel); | |
6123 | if (status == 0) | |
6124 | nfs_setsecurity(inode, &fattr, olabel); | |
6125 | ||
6126 | nfs4_label_free(olabel); | |
6127 | out: | |
aa9c2669 DQ |
6128 | return status; |
6129 | } | |
6130 | #endif /* CONFIG_NFS_V4_SECURITY_LABEL */ | |
6131 | ||
6132 | ||
f092075d CL |
6133 | static void nfs4_init_boot_verifier(const struct nfs_client *clp, |
6134 | nfs4_verifier *bootverf) | |
cd93710e CL |
6135 | { |
6136 | __be32 verf[2]; | |
6137 | ||
2c820d9a CL |
6138 | if (test_bit(NFS4CLNT_PURGE_STATE, &clp->cl_state)) { |
6139 | /* An impossible timestamp guarantees this value | |
6140 | * will never match a generated boot time. */ | |
2f86e091 DD |
6141 | verf[0] = cpu_to_be32(U32_MAX); |
6142 | verf[1] = cpu_to_be32(U32_MAX); | |
2c820d9a | 6143 | } else { |
f092075d | 6144 | struct nfs_net *nn = net_generic(clp->cl_net, nfs_net_id); |
2f86e091 DD |
6145 | u64 ns = ktime_to_ns(nn->boot_time); |
6146 | ||
6147 | verf[0] = cpu_to_be32(ns >> 32); | |
6148 | verf[1] = cpu_to_be32(ns); | |
2c820d9a | 6149 | } |
cd93710e CL |
6150 | memcpy(bootverf->data, verf, sizeof(bootverf->data)); |
6151 | } | |
6152 | ||
1aee5513 | 6153 | static size_t |
39d43d16 | 6154 | nfs4_get_uniquifier(struct nfs_client *clp, char *buf, size_t buflen) |
1aee5513 | 6155 | { |
39d43d16 TM |
6156 | struct nfs_net *nn = net_generic(clp->cl_net, nfs_net_id); |
6157 | struct nfs_netns_client *nn_clp = nn->nfs_client; | |
6158 | const char *id; | |
6159 | ||
1aee5513 TM |
6160 | buf[0] = '\0'; |
6161 | ||
39d43d16 TM |
6162 | if (nn_clp) { |
6163 | rcu_read_lock(); | |
6164 | id = rcu_dereference(nn_clp->identifier); | |
6165 | if (id) | |
6166 | strscpy(buf, id, buflen); | |
6167 | rcu_read_unlock(); | |
6168 | } | |
6169 | ||
6170 | if (nfs4_client_id_uniquifier[0] != '\0' && buf[0] == '\0') | |
1aee5513 TM |
6171 | strscpy(buf, nfs4_client_id_uniquifier, buflen); |
6172 | ||
6173 | return strlen(buf); | |
6174 | } | |
6175 | ||
a3192688 JL |
6176 | static int |
6177 | nfs4_init_nonuniform_client_string(struct nfs_client *clp) | |
e984a55a | 6178 | { |
1aee5513 TM |
6179 | char buf[NFS4_CLIENT_ID_UNIQ_LEN]; |
6180 | size_t buflen; | |
a3192688 JL |
6181 | size_t len; |
6182 | char *str; | |
e984a55a | 6183 | |
ceb3a16c | 6184 | if (clp->cl_owner_id != NULL) |
a3192688 | 6185 | return 0; |
4a3e5779 | 6186 | |
a3192688 | 6187 | rcu_read_lock(); |
848a4eb2 CL |
6188 | len = 14 + |
6189 | strlen(clp->cl_rpcclient->cl_nodename) + | |
6190 | 1 + | |
a3192688 | 6191 | strlen(rpc_peeraddr2str(clp->cl_rpcclient, RPC_DISPLAY_ADDR)) + |
a3192688 JL |
6192 | 1; |
6193 | rcu_read_unlock(); | |
1aee5513 | 6194 | |
39d43d16 | 6195 | buflen = nfs4_get_uniquifier(clp, buf, sizeof(buf)); |
1aee5513 TM |
6196 | if (buflen) |
6197 | len += buflen + 1; | |
6198 | ||
a3192688 JL |
6199 | if (len > NFS4_OPAQUE_LIMIT + 1) |
6200 | return -EINVAL; | |
6201 | ||
6202 | /* | |
6203 | * Since this string is allocated at mount time, and held until the | |
6204 | * nfs_client is destroyed, we can use GFP_KERNEL here w/o worrying | |
6205 | * about a memory-reclaim deadlock. | |
6206 | */ | |
6207 | str = kmalloc(len, GFP_KERNEL); | |
6208 | if (!str) | |
6209 | return -ENOMEM; | |
ceb3a16c | 6210 | |
e984a55a | 6211 | rcu_read_lock(); |
1aee5513 | 6212 | if (buflen) |
025bb9f8 | 6213 | scnprintf(str, len, "Linux NFSv4.0 %s/%s/%s", |
1aee5513 | 6214 | clp->cl_rpcclient->cl_nodename, buf, |
848a4eb2 | 6215 | rpc_peeraddr2str(clp->cl_rpcclient, |
025bb9f8 | 6216 | RPC_DISPLAY_ADDR)); |
848a4eb2 | 6217 | else |
025bb9f8 | 6218 | scnprintf(str, len, "Linux NFSv4.0 %s/%s", |
848a4eb2 CL |
6219 | clp->cl_rpcclient->cl_nodename, |
6220 | rpc_peeraddr2str(clp->cl_rpcclient, | |
025bb9f8 | 6221 | RPC_DISPLAY_ADDR)); |
e984a55a | 6222 | rcu_read_unlock(); |
a3192688 | 6223 | |
a3192688 JL |
6224 | clp->cl_owner_id = str; |
6225 | return 0; | |
e984a55a CL |
6226 | } |
6227 | ||
873e3851 JL |
6228 | static int |
6229 | nfs4_init_uniform_client_string(struct nfs_client *clp) | |
e984a55a | 6230 | { |
1aee5513 TM |
6231 | char buf[NFS4_CLIENT_ID_UNIQ_LEN]; |
6232 | size_t buflen; | |
873e3851 JL |
6233 | size_t len; |
6234 | char *str; | |
ceb3a16c TM |
6235 | |
6236 | if (clp->cl_owner_id != NULL) | |
873e3851 | 6237 | return 0; |
6f2ea7f2 | 6238 | |
873e3851 JL |
6239 | len = 10 + 10 + 1 + 10 + 1 + |
6240 | strlen(clp->cl_rpcclient->cl_nodename) + 1; | |
6241 | ||
39d43d16 | 6242 | buflen = nfs4_get_uniquifier(clp, buf, sizeof(buf)); |
1aee5513 TM |
6243 | if (buflen) |
6244 | len += buflen + 1; | |
6245 | ||
873e3851 JL |
6246 | if (len > NFS4_OPAQUE_LIMIT + 1) |
6247 | return -EINVAL; | |
6248 | ||
6249 | /* | |
6250 | * Since this string is allocated at mount time, and held until the | |
6251 | * nfs_client is destroyed, we can use GFP_KERNEL here w/o worrying | |
6252 | * about a memory-reclaim deadlock. | |
6253 | */ | |
6254 | str = kmalloc(len, GFP_KERNEL); | |
6255 | if (!str) | |
6256 | return -ENOMEM; | |
6257 | ||
1aee5513 TM |
6258 | if (buflen) |
6259 | scnprintf(str, len, "Linux NFSv%u.%u %s/%s", | |
6260 | clp->rpc_ops->version, clp->cl_minorversion, | |
6261 | buf, clp->cl_rpcclient->cl_nodename); | |
6262 | else | |
6263 | scnprintf(str, len, "Linux NFSv%u.%u %s", | |
6264 | clp->rpc_ops->version, clp->cl_minorversion, | |
6265 | clp->cl_rpcclient->cl_nodename); | |
873e3851 JL |
6266 | clp->cl_owner_id = str; |
6267 | return 0; | |
e984a55a CL |
6268 | } |
6269 | ||
706cb8db CL |
6270 | /* |
6271 | * nfs4_callback_up_net() starts only "tcp" and "tcp6" callback | |
6272 | * services. Advertise one based on the address family of the | |
6273 | * clientaddr. | |
6274 | */ | |
6275 | static unsigned int | |
6276 | nfs4_init_callback_netid(const struct nfs_client *clp, char *buf, size_t len) | |
6277 | { | |
6278 | if (strchr(clp->cl_ipaddr, ':') != NULL) | |
6279 | return scnprintf(buf, len, "tcp6"); | |
6280 | else | |
6281 | return scnprintf(buf, len, "tcp"); | |
6282 | } | |
6283 | ||
f11b2a1c JL |
6284 | static void nfs4_setclientid_done(struct rpc_task *task, void *calldata) |
6285 | { | |
6286 | struct nfs4_setclientid *sc = calldata; | |
6287 | ||
6288 | if (task->tk_status == 0) | |
6289 | sc->sc_cred = get_rpccred(task->tk_rqstp->rq_cred); | |
6290 | } | |
6291 | ||
6292 | static const struct rpc_call_ops nfs4_setclientid_ops = { | |
6293 | .rpc_call_done = nfs4_setclientid_done, | |
6294 | }; | |
6295 | ||
6bbb4ae8 CL |
6296 | /** |
6297 | * nfs4_proc_setclientid - Negotiate client ID | |
6298 | * @clp: state data structure | |
6299 | * @program: RPC program for NFSv4 callback service | |
6300 | * @port: IP port number for NFS4 callback service | |
a52458b4 | 6301 | * @cred: credential to use for this call |
6bbb4ae8 CL |
6302 | * @res: where to place the result |
6303 | * | |
6304 | * Returns zero, a negative errno, or a negative NFS4ERR status code. | |
6305 | */ | |
bb8b27e5 | 6306 | int nfs4_proc_setclientid(struct nfs_client *clp, u32 program, |
a52458b4 | 6307 | unsigned short port, const struct cred *cred, |
bb8b27e5 | 6308 | struct nfs4_setclientid_res *res) |
1da177e4 LT |
6309 | { |
6310 | nfs4_verifier sc_verifier; | |
6311 | struct nfs4_setclientid setclientid = { | |
6312 | .sc_verifier = &sc_verifier, | |
6313 | .sc_prog = program, | |
3a6bb738 | 6314 | .sc_clnt = clp, |
1da177e4 LT |
6315 | }; |
6316 | struct rpc_message msg = { | |
6317 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETCLIENTID], | |
6318 | .rpc_argp = &setclientid, | |
bb8b27e5 | 6319 | .rpc_resp = res, |
286d7d6a | 6320 | .rpc_cred = cred, |
1da177e4 | 6321 | }; |
f11b2a1c JL |
6322 | struct rpc_task_setup task_setup_data = { |
6323 | .rpc_client = clp->cl_rpcclient, | |
6324 | .rpc_message = &msg, | |
6325 | .callback_ops = &nfs4_setclientid_ops, | |
6326 | .callback_data = &setclientid, | |
5a0c257f | 6327 | .flags = RPC_TASK_TIMEOUT | RPC_TASK_NO_ROUND_ROBIN, |
f11b2a1c | 6328 | }; |
7dc2993a | 6329 | unsigned long now = jiffies; |
6bbb4ae8 | 6330 | int status; |
1da177e4 | 6331 | |
de734831 | 6332 | /* nfs_client_id4 */ |
f092075d | 6333 | nfs4_init_boot_verifier(clp, &sc_verifier); |
873e3851 JL |
6334 | |
6335 | if (test_bit(NFS_CS_MIGRATION, &clp->cl_flags)) | |
6336 | status = nfs4_init_uniform_client_string(clp); | |
6337 | else | |
a3192688 | 6338 | status = nfs4_init_nonuniform_client_string(clp); |
873e3851 JL |
6339 | |
6340 | if (status) | |
6341 | goto out; | |
3a6bb738 | 6342 | |
de734831 | 6343 | /* cb_client4 */ |
706cb8db CL |
6344 | setclientid.sc_netid_len = |
6345 | nfs4_init_callback_netid(clp, | |
6346 | setclientid.sc_netid, | |
6347 | sizeof(setclientid.sc_netid)); | |
de734831 | 6348 | setclientid.sc_uaddr_len = scnprintf(setclientid.sc_uaddr, |
d4d3c507 | 6349 | sizeof(setclientid.sc_uaddr), "%s.%u.%u", |
1da177e4 LT |
6350 | clp->cl_ipaddr, port >> 8, port & 255); |
6351 | ||
3a6bb738 | 6352 | dprintk("NFS call setclientid auth=%s, '%s'\n", |
6bbb4ae8 | 6353 | clp->cl_rpcclient->cl_auth->au_ops->au_name, |
3a6bb738 | 6354 | clp->cl_owner_id); |
dae40965 AS |
6355 | |
6356 | status = nfs4_call_sync_custom(&task_setup_data); | |
f11b2a1c | 6357 | if (setclientid.sc_cred) { |
1047ec86 | 6358 | kfree(clp->cl_acceptor); |
f11b2a1c JL |
6359 | clp->cl_acceptor = rpcauth_stringify_acceptor(setclientid.sc_cred); |
6360 | put_rpccred(setclientid.sc_cred); | |
6361 | } | |
7dc2993a RM |
6362 | |
6363 | if (status == 0) | |
6364 | do_renew_lease(clp, now); | |
f11b2a1c | 6365 | out: |
c6d01c6f | 6366 | trace_nfs4_setclientid(clp, status); |
6bbb4ae8 CL |
6367 | dprintk("NFS reply setclientid: %d\n", status); |
6368 | return status; | |
1da177e4 LT |
6369 | } |
6370 | ||
6bbb4ae8 CL |
6371 | /** |
6372 | * nfs4_proc_setclientid_confirm - Confirm client ID | |
6373 | * @clp: state data structure | |
302fad7b | 6374 | * @arg: result of a previous SETCLIENTID |
a52458b4 | 6375 | * @cred: credential to use for this call |
6bbb4ae8 CL |
6376 | * |
6377 | * Returns zero, a negative errno, or a negative NFS4ERR status code. | |
6378 | */ | |
fd954ae1 | 6379 | int nfs4_proc_setclientid_confirm(struct nfs_client *clp, |
bb8b27e5 | 6380 | struct nfs4_setclientid_res *arg, |
a52458b4 | 6381 | const struct cred *cred) |
1da177e4 | 6382 | { |
1da177e4 LT |
6383 | struct rpc_message msg = { |
6384 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETCLIENTID_CONFIRM], | |
bb8b27e5 | 6385 | .rpc_argp = arg, |
286d7d6a | 6386 | .rpc_cred = cred, |
1da177e4 | 6387 | }; |
1da177e4 LT |
6388 | int status; |
6389 | ||
6bbb4ae8 CL |
6390 | dprintk("NFS call setclientid_confirm auth=%s, (client ID %llx)\n", |
6391 | clp->cl_rpcclient->cl_auth->au_ops->au_name, | |
6392 | clp->cl_clientid); | |
5a0c257f N |
6393 | status = rpc_call_sync(clp->cl_rpcclient, &msg, |
6394 | RPC_TASK_TIMEOUT | RPC_TASK_NO_ROUND_ROBIN); | |
c6d01c6f | 6395 | trace_nfs4_setclientid_confirm(clp, status); |
6bbb4ae8 | 6396 | dprintk("NFS reply setclientid_confirm: %d\n", status); |
1da177e4 LT |
6397 | return status; |
6398 | } | |
6399 | ||
fe650407 TM |
6400 | struct nfs4_delegreturndata { |
6401 | struct nfs4_delegreturnargs args; | |
fa178f29 | 6402 | struct nfs4_delegreturnres res; |
fe650407 TM |
6403 | struct nfs_fh fh; |
6404 | nfs4_stateid stateid; | |
26e976a8 | 6405 | unsigned long timestamp; |
586f1c39 TM |
6406 | struct { |
6407 | struct nfs4_layoutreturn_args arg; | |
6408 | struct nfs4_layoutreturn_res res; | |
4d796d75 | 6409 | struct nfs4_xdr_opaque_data ld_private; |
586f1c39 TM |
6410 | u32 roc_barrier; |
6411 | bool roc; | |
6412 | } lr; | |
fa178f29 | 6413 | struct nfs_fattr fattr; |
fe650407 | 6414 | int rpc_status; |
039b756a | 6415 | struct inode *inode; |
fe650407 TM |
6416 | }; |
6417 | ||
fe650407 TM |
6418 | static void nfs4_delegreturn_done(struct rpc_task *task, void *calldata) |
6419 | { | |
6420 | struct nfs4_delegreturndata *data = calldata; | |
e0dba012 TM |
6421 | struct nfs4_exception exception = { |
6422 | .inode = data->inode, | |
6423 | .stateid = &data->stateid, | |
dfe1fe75 | 6424 | .task_is_privileged = data->args.seq_args.sa_privileged, |
e0dba012 | 6425 | }; |
938e1010 | 6426 | |
14516c3a TM |
6427 | if (!nfs4_sequence_done(task, &data->res.seq_res)) |
6428 | return; | |
938e1010 | 6429 | |
ca8acf8d | 6430 | trace_nfs4_delegreturn_exit(&data->args, &data->res, task->tk_status); |
586f1c39 TM |
6431 | |
6432 | /* Handle Layoutreturn errors */ | |
078000d0 TM |
6433 | if (pnfs_roc_done(task, &data->args.lr_args, &data->res.lr_res, |
6434 | &data->res.lr_ret) == -EAGAIN) | |
287a9c55 | 6435 | goto out_restart; |
586f1c39 | 6436 | |
79708861 | 6437 | switch (task->tk_status) { |
79708861 | 6438 | case 0: |
fa178f29 | 6439 | renew_lease(data->res.server, data->timestamp); |
23ea44c2 | 6440 | break; |
c97cf606 TM |
6441 | case -NFS4ERR_ADMIN_REVOKED: |
6442 | case -NFS4ERR_DELEG_REVOKED: | |
26d36301 TM |
6443 | case -NFS4ERR_EXPIRED: |
6444 | nfs4_free_revoked_stateid(data->res.server, | |
6445 | data->args.stateid, | |
6446 | task->tk_msg.rpc_cred); | |
df561f66 | 6447 | fallthrough; |
c97cf606 | 6448 | case -NFS4ERR_BAD_STATEID: |
c97cf606 | 6449 | case -NFS4ERR_STALE_STATEID: |
244fcd2f | 6450 | case -ETIMEDOUT: |
c97cf606 TM |
6451 | task->tk_status = 0; |
6452 | break; | |
12f275cd | 6453 | case -NFS4ERR_OLD_STATEID: |
246afc0a TM |
6454 | if (!nfs4_refresh_delegation_stateid(&data->stateid, data->inode)) |
6455 | nfs4_stateid_seqid_inc(&data->stateid); | |
70d136b2 TM |
6456 | if (data->args.bitmask) { |
6457 | data->args.bitmask = NULL; | |
6458 | data->res.fattr = NULL; | |
6459 | } | |
246afc0a | 6460 | goto out_restart; |
8ac2b422 TM |
6461 | case -NFS4ERR_ACCESS: |
6462 | if (data->args.bitmask) { | |
6463 | data->args.bitmask = NULL; | |
6464 | data->res.fattr = NULL; | |
140087fd | 6465 | goto out_restart; |
8ac2b422 | 6466 | } |
df561f66 | 6467 | fallthrough; |
79708861 | 6468 | default: |
e0dba012 TM |
6469 | task->tk_status = nfs4_async_handle_exception(task, |
6470 | data->res.server, task->tk_status, | |
6471 | &exception); | |
6472 | if (exception.retry) | |
140087fd | 6473 | goto out_restart; |
79708861 | 6474 | } |
d51f91d2 | 6475 | nfs_delegation_mark_returned(data->inode, data->args.stateid); |
79708861 | 6476 | data->rpc_status = task->tk_status; |
140087fd | 6477 | return; |
140087fd TM |
6478 | out_restart: |
6479 | task->tk_status = 0; | |
6480 | rpc_restart_call_prepare(task); | |
fe650407 TM |
6481 | } |
6482 | ||
6483 | static void nfs4_delegreturn_release(void *calldata) | |
6484 | { | |
039b756a | 6485 | struct nfs4_delegreturndata *data = calldata; |
ea7c38fe | 6486 | struct inode *inode = data->inode; |
039b756a | 6487 | |
078000d0 TM |
6488 | if (data->lr.roc) |
6489 | pnfs_roc_release(&data->lr.arg, &data->lr.res, | |
6490 | data->res.lr_ret); | |
ea7c38fe | 6491 | if (inode) { |
0bc2c9b4 | 6492 | nfs_post_op_update_inode_force_wcc(inode, &data->fattr); |
ea7c38fe TM |
6493 | nfs_iput_and_deactive(inode); |
6494 | } | |
fe650407 TM |
6495 | kfree(calldata); |
6496 | } | |
6497 | ||
938e1010 AA |
6498 | static void nfs4_delegreturn_prepare(struct rpc_task *task, void *data) |
6499 | { | |
6500 | struct nfs4_delegreturndata *d_data; | |
c8bf7073 | 6501 | struct pnfs_layout_hdr *lo; |
938e1010 AA |
6502 | |
6503 | d_data = (struct nfs4_delegreturndata *)data; | |
6504 | ||
5326de9e TM |
6505 | if (!d_data->lr.roc && nfs4_wait_on_layoutreturn(d_data->inode, task)) { |
6506 | nfs4_sequence_done(task, &d_data->res.seq_res); | |
500d701f | 6507 | return; |
5326de9e | 6508 | } |
500d701f | 6509 | |
c8bf7073 TM |
6510 | lo = d_data->args.lr_args ? d_data->args.lr_args->layout : NULL; |
6511 | if (lo && !pnfs_layout_is_valid(lo)) { | |
6512 | d_data->args.lr_args = NULL; | |
6513 | d_data->res.lr_res = NULL; | |
6514 | } | |
6515 | ||
42e1cca7 | 6516 | nfs4_setup_sequence(d_data->res.server->nfs_client, |
d9afbd1b TM |
6517 | &d_data->args.seq_args, |
6518 | &d_data->res.seq_res, | |
6519 | task); | |
938e1010 | 6520 | } |
938e1010 | 6521 | |
c8d149f3 | 6522 | static const struct rpc_call_ops nfs4_delegreturn_ops = { |
938e1010 | 6523 | .rpc_call_prepare = nfs4_delegreturn_prepare, |
fe650407 TM |
6524 | .rpc_call_done = nfs4_delegreturn_done, |
6525 | .rpc_release = nfs4_delegreturn_release, | |
6526 | }; | |
6527 | ||
a52458b4 | 6528 | static int _nfs4_proc_delegreturn(struct inode *inode, const struct cred *cred, const nfs4_stateid *stateid, int issync) |
fe650407 TM |
6529 | { |
6530 | struct nfs4_delegreturndata *data; | |
fa178f29 | 6531 | struct nfs_server *server = NFS_SERVER(inode); |
fe650407 | 6532 | struct rpc_task *task; |
5138fde0 TM |
6533 | struct rpc_message msg = { |
6534 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DELEGRETURN], | |
6535 | .rpc_cred = cred, | |
6536 | }; | |
c970aa85 TM |
6537 | struct rpc_task_setup task_setup_data = { |
6538 | .rpc_client = server->client, | |
5138fde0 | 6539 | .rpc_message = &msg, |
c970aa85 | 6540 | .callback_ops = &nfs4_delegreturn_ops, |
f304a809 | 6541 | .flags = RPC_TASK_ASYNC | RPC_TASK_TIMEOUT, |
c970aa85 | 6542 | }; |
e6f81075 | 6543 | int status = 0; |
fe650407 | 6544 | |
8535b2be | 6545 | data = kzalloc(sizeof(*data), GFP_NOFS); |
fe650407 TM |
6546 | if (data == NULL) |
6547 | return -ENOMEM; | |
99ade3c7 AE |
6548 | |
6549 | nfs4_state_protect(server->nfs_client, | |
6550 | NFS_SP4_MACH_CRED_CLEANUP, | |
6551 | &task_setup_data.rpc_client, &msg); | |
6552 | ||
fe650407 TM |
6553 | data->args.fhandle = &data->fh; |
6554 | data->args.stateid = &data->stateid; | |
332d1a03 TM |
6555 | nfs4_bitmask_set(data->args.bitmask_store, |
6556 | server->cache_consistency_bitmask, inode, server, | |
6557 | NULL); | |
6558 | data->args.bitmask = data->args.bitmask_store; | |
fe650407 | 6559 | nfs_copy_fh(&data->fh, NFS_FH(inode)); |
f597c537 | 6560 | nfs4_stateid_copy(&data->stateid, stateid); |
fa178f29 TM |
6561 | data->res.fattr = &data->fattr; |
6562 | data->res.server = server; | |
586f1c39 | 6563 | data->res.lr_ret = -NFS4ERR_NOMATCHING_LAYOUT; |
4d796d75 | 6564 | data->lr.arg.ld_private = &data->lr.ld_private; |
5138fde0 | 6565 | nfs_fattr_init(data->res.fattr); |
26e976a8 | 6566 | data->timestamp = jiffies; |
fe650407 | 6567 | data->rpc_status = 0; |
ea7c38fe | 6568 | data->inode = nfs_igrab_and_active(inode); |
078000d0 TM |
6569 | if (data->inode || issync) { |
6570 | data->lr.roc = pnfs_roc(inode, &data->lr.arg, &data->lr.res, | |
6571 | cred); | |
1c5bd76d TM |
6572 | if (data->lr.roc) { |
6573 | data->args.lr_args = &data->lr.arg; | |
6574 | data->res.lr_res = &data->lr.res; | |
6575 | } | |
6576 | } | |
fe650407 | 6577 | |
dfe1fe75 TM |
6578 | if (!data->inode) |
6579 | nfs4_init_sequence(&data->args.seq_args, &data->res.seq_res, 1, | |
6580 | 1); | |
6581 | else | |
6582 | nfs4_init_sequence(&data->args.seq_args, &data->res.seq_res, 1, | |
6583 | 0); | |
c970aa85 | 6584 | task_setup_data.callback_data = data; |
1174dd1f TM |
6585 | msg.rpc_argp = &data->args; |
6586 | msg.rpc_resp = &data->res; | |
c970aa85 | 6587 | task = rpc_run_task(&task_setup_data); |
7a1218a2 | 6588 | if (IS_ERR(task)) |
fe650407 | 6589 | return PTR_ERR(task); |
e6f81075 TM |
6590 | if (!issync) |
6591 | goto out; | |
820bf85c | 6592 | status = rpc_wait_for_completion_task(task); |
e6f81075 TM |
6593 | if (status != 0) |
6594 | goto out; | |
6595 | status = data->rpc_status; | |
e6f81075 | 6596 | out: |
e6b3c4db | 6597 | rpc_put_task(task); |
fe650407 | 6598 | return status; |
1da177e4 LT |
6599 | } |
6600 | ||
a52458b4 | 6601 | int nfs4_proc_delegreturn(struct inode *inode, const struct cred *cred, const nfs4_stateid *stateid, int issync) |
1da177e4 LT |
6602 | { |
6603 | struct nfs_server *server = NFS_SERVER(inode); | |
6604 | struct nfs4_exception exception = { }; | |
6605 | int err; | |
6606 | do { | |
e6f81075 | 6607 | err = _nfs4_proc_delegreturn(inode, cred, stateid, issync); |
48c9579a | 6608 | trace_nfs4_delegreturn(inode, stateid, err); |
1da177e4 LT |
6609 | switch (err) { |
6610 | case -NFS4ERR_STALE_STATEID: | |
6611 | case -NFS4ERR_EXPIRED: | |
1da177e4 LT |
6612 | case 0: |
6613 | return 0; | |
6614 | } | |
6615 | err = nfs4_handle_exception(server, err, &exception); | |
6616 | } while (exception.retry); | |
6617 | return err; | |
6618 | } | |
6619 | ||
1da177e4 LT |
6620 | static int _nfs4_proc_getlk(struct nfs4_state *state, int cmd, struct file_lock *request) |
6621 | { | |
6622 | struct inode *inode = state->inode; | |
6623 | struct nfs_server *server = NFS_SERVER(inode); | |
7539bbab | 6624 | struct nfs_client *clp = server->nfs_client; |
911d1aaf | 6625 | struct nfs_lockt_args arg = { |
1da177e4 | 6626 | .fh = NFS_FH(inode), |
911d1aaf | 6627 | .fl = request, |
1da177e4 | 6628 | }; |
911d1aaf TM |
6629 | struct nfs_lockt_res res = { |
6630 | .denied = request, | |
1da177e4 LT |
6631 | }; |
6632 | struct rpc_message msg = { | |
6633 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCKT], | |
d9b67e1e AS |
6634 | .rpc_argp = &arg, |
6635 | .rpc_resp = &res, | |
1da177e4 LT |
6636 | .rpc_cred = state->owner->so_cred, |
6637 | }; | |
1da177e4 LT |
6638 | struct nfs4_lock_state *lsp; |
6639 | int status; | |
6640 | ||
911d1aaf | 6641 | arg.lock_owner.clientid = clp->cl_clientid; |
8d0a8a9d TM |
6642 | status = nfs4_set_lock_state(state, request); |
6643 | if (status != 0) | |
6644 | goto out; | |
6645 | lsp = request->fl_u.nfs4_fl.owner; | |
48c22eb2 | 6646 | arg.lock_owner.id = lsp->ls_seqid.owner_id; |
d035c36c | 6647 | arg.lock_owner.s_dev = server->s_dev; |
7c513058 | 6648 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
911d1aaf TM |
6649 | switch (status) { |
6650 | case 0: | |
6651 | request->fl_type = F_UNLCK; | |
6652 | break; | |
6653 | case -NFS4ERR_DENIED: | |
6654 | status = 0; | |
1da177e4 | 6655 | } |
70cc6487 | 6656 | request->fl_ops->fl_release_private(request); |
a6f951dd | 6657 | request->fl_ops = NULL; |
8d0a8a9d | 6658 | out: |
1da177e4 LT |
6659 | return status; |
6660 | } | |
6661 | ||
6662 | static int nfs4_proc_getlk(struct nfs4_state *state, int cmd, struct file_lock *request) | |
6663 | { | |
0688e64b TM |
6664 | struct nfs4_exception exception = { |
6665 | .interruptible = true, | |
6666 | }; | |
1da177e4 LT |
6667 | int err; |
6668 | ||
6669 | do { | |
d1b748a5 TM |
6670 | err = _nfs4_proc_getlk(state, cmd, request); |
6671 | trace_nfs4_get_lock(request, state, cmd, err); | |
6672 | err = nfs4_handle_exception(NFS_SERVER(state->inode), err, | |
1da177e4 LT |
6673 | &exception); |
6674 | } while (exception.retry); | |
6675 | return err; | |
6676 | } | |
6677 | ||
32c6e7ee TM |
6678 | /* |
6679 | * Update the seqid of a lock stateid after receiving | |
6680 | * NFS4ERR_OLD_STATEID | |
6681 | */ | |
6682 | static bool nfs4_refresh_lock_old_stateid(nfs4_stateid *dst, | |
6683 | struct nfs4_lock_state *lsp) | |
6684 | { | |
6685 | struct nfs4_state *state = lsp->ls_state; | |
6686 | bool ret = false; | |
6687 | ||
6688 | spin_lock(&state->state_lock); | |
6689 | if (!nfs4_stateid_match_other(dst, &lsp->ls_stateid)) | |
6690 | goto out; | |
6691 | if (!nfs4_stateid_is_newer(&lsp->ls_stateid, dst)) | |
6692 | nfs4_stateid_seqid_inc(dst); | |
6693 | else | |
6694 | dst->seqid = lsp->ls_stateid.seqid; | |
6695 | ret = true; | |
6696 | out: | |
6697 | spin_unlock(&state->state_lock); | |
6698 | return ret; | |
6699 | } | |
6700 | ||
6701 | static bool nfs4_sync_lock_stateid(nfs4_stateid *dst, | |
6702 | struct nfs4_lock_state *lsp) | |
6703 | { | |
6704 | struct nfs4_state *state = lsp->ls_state; | |
6705 | bool ret; | |
6706 | ||
6707 | spin_lock(&state->state_lock); | |
6708 | ret = !nfs4_stateid_match_other(dst, &lsp->ls_stateid); | |
6709 | nfs4_stateid_copy(dst, &lsp->ls_stateid); | |
6710 | spin_unlock(&state->state_lock); | |
6711 | return ret; | |
6712 | } | |
6713 | ||
faf5f49c | 6714 | struct nfs4_unlockdata { |
911d1aaf TM |
6715 | struct nfs_locku_args arg; |
6716 | struct nfs_locku_res res; | |
faf5f49c TM |
6717 | struct nfs4_lock_state *lsp; |
6718 | struct nfs_open_context *ctx; | |
f30cb757 | 6719 | struct nfs_lock_context *l_ctx; |
911d1aaf | 6720 | struct file_lock fl; |
516285eb | 6721 | struct nfs_server *server; |
26e976a8 | 6722 | unsigned long timestamp; |
faf5f49c TM |
6723 | }; |
6724 | ||
911d1aaf TM |
6725 | static struct nfs4_unlockdata *nfs4_alloc_unlockdata(struct file_lock *fl, |
6726 | struct nfs_open_context *ctx, | |
6727 | struct nfs4_lock_state *lsp, | |
6728 | struct nfs_seqid *seqid) | |
6729 | { | |
6730 | struct nfs4_unlockdata *p; | |
32c6e7ee TM |
6731 | struct nfs4_state *state = lsp->ls_state; |
6732 | struct inode *inode = state->inode; | |
911d1aaf | 6733 | |
8535b2be | 6734 | p = kzalloc(sizeof(*p), GFP_NOFS); |
911d1aaf TM |
6735 | if (p == NULL) |
6736 | return NULL; | |
6737 | p->arg.fh = NFS_FH(inode); | |
6738 | p->arg.fl = &p->fl; | |
6739 | p->arg.seqid = seqid; | |
c1d51931 | 6740 | p->res.seqid = seqid; |
911d1aaf | 6741 | p->lsp = lsp; |
911d1aaf TM |
6742 | /* Ensure we don't close file until we're done freeing locks! */ |
6743 | p->ctx = get_nfs_open_context(ctx); | |
f30cb757 | 6744 | p->l_ctx = nfs_get_lock_context(ctx); |
7b587e1a N |
6745 | locks_init_lock(&p->fl); |
6746 | locks_copy_lock(&p->fl, fl); | |
911d1aaf | 6747 | p->server = NFS_SERVER(inode); |
32c6e7ee TM |
6748 | spin_lock(&state->state_lock); |
6749 | nfs4_stateid_copy(&p->arg.stateid, &lsp->ls_stateid); | |
6750 | spin_unlock(&state->state_lock); | |
911d1aaf TM |
6751 | return p; |
6752 | } | |
6753 | ||
06f814a3 | 6754 | static void nfs4_locku_release_calldata(void *data) |
faf5f49c | 6755 | { |
963d8fe5 | 6756 | struct nfs4_unlockdata *calldata = data; |
911d1aaf | 6757 | nfs_free_seqid(calldata->arg.seqid); |
06f814a3 | 6758 | nfs4_put_lock_state(calldata->lsp); |
f30cb757 | 6759 | nfs_put_lock_context(calldata->l_ctx); |
06f814a3 TM |
6760 | put_nfs_open_context(calldata->ctx); |
6761 | kfree(calldata); | |
faf5f49c TM |
6762 | } |
6763 | ||
963d8fe5 | 6764 | static void nfs4_locku_done(struct rpc_task *task, void *data) |
faf5f49c | 6765 | { |
963d8fe5 | 6766 | struct nfs4_unlockdata *calldata = data; |
82571552 TM |
6767 | struct nfs4_exception exception = { |
6768 | .inode = calldata->lsp->ls_state->inode, | |
6769 | .stateid = &calldata->arg.stateid, | |
6770 | }; | |
faf5f49c | 6771 | |
14516c3a TM |
6772 | if (!nfs4_sequence_done(task, &calldata->res.seq_res)) |
6773 | return; | |
faf5f49c TM |
6774 | switch (task->tk_status) { |
6775 | case 0: | |
26e976a8 | 6776 | renew_lease(calldata->server, calldata->timestamp); |
75575ddf | 6777 | locks_lock_inode_wait(calldata->lsp->ls_state->inode, &calldata->fl); |
c69899a1 TM |
6778 | if (nfs4_update_lock_stateid(calldata->lsp, |
6779 | &calldata->res.stateid)) | |
6780 | break; | |
df561f66 | 6781 | fallthrough; |
26d36301 TM |
6782 | case -NFS4ERR_ADMIN_REVOKED: |
6783 | case -NFS4ERR_EXPIRED: | |
6784 | nfs4_free_revoked_stateid(calldata->server, | |
6785 | &calldata->arg.stateid, | |
6786 | task->tk_msg.rpc_cred); | |
df561f66 | 6787 | fallthrough; |
9e33bed5 | 6788 | case -NFS4ERR_BAD_STATEID: |
faf5f49c | 6789 | case -NFS4ERR_STALE_STATEID: |
32c6e7ee TM |
6790 | if (nfs4_sync_lock_stateid(&calldata->arg.stateid, |
6791 | calldata->lsp)) | |
6792 | rpc_restart_call_prepare(task); | |
6793 | break; | |
6794 | case -NFS4ERR_OLD_STATEID: | |
6795 | if (nfs4_refresh_lock_old_stateid(&calldata->arg.stateid, | |
6796 | calldata->lsp)) | |
425c1d4e | 6797 | rpc_restart_call_prepare(task); |
faf5f49c TM |
6798 | break; |
6799 | default: | |
82571552 TM |
6800 | task->tk_status = nfs4_async_handle_exception(task, |
6801 | calldata->server, task->tk_status, | |
6802 | &exception); | |
6803 | if (exception.retry) | |
d00c5d43 | 6804 | rpc_restart_call_prepare(task); |
faf5f49c | 6805 | } |
2b1bc308 | 6806 | nfs_release_seqid(calldata->arg.seqid); |
faf5f49c TM |
6807 | } |
6808 | ||
4ce70ada | 6809 | static void nfs4_locku_prepare(struct rpc_task *task, void *data) |
faf5f49c | 6810 | { |
4ce70ada | 6811 | struct nfs4_unlockdata *calldata = data; |
faf5f49c | 6812 | |
f30cb757 BC |
6813 | if (test_bit(NFS_CONTEXT_UNLOCK, &calldata->l_ctx->open_context->flags) && |
6814 | nfs_async_iocounter_wait(task, calldata->l_ctx)) | |
6815 | return; | |
6816 | ||
911d1aaf | 6817 | if (nfs_wait_on_sequence(calldata->arg.seqid, task) != 0) |
c8da19b9 | 6818 | goto out_wait; |
795a88c9 | 6819 | if (test_bit(NFS_LOCK_INITIALIZED, &calldata->lsp->ls_flags) == 0) { |
963d8fe5 | 6820 | /* Note: exit _without_ running nfs4_locku_done */ |
c8da19b9 | 6821 | goto out_no_action; |
faf5f49c | 6822 | } |
26e976a8 | 6823 | calldata->timestamp = jiffies; |
42e1cca7 | 6824 | if (nfs4_setup_sequence(calldata->server->nfs_client, |
a893693c | 6825 | &calldata->arg.seq_args, |
2240a9e2 TM |
6826 | &calldata->res.seq_res, |
6827 | task) != 0) | |
6828 | nfs_release_seqid(calldata->arg.seqid); | |
c8da19b9 TM |
6829 | return; |
6830 | out_no_action: | |
6831 | task->tk_action = NULL; | |
6832 | out_wait: | |
6833 | nfs4_sequence_done(task, &calldata->res.seq_res); | |
faf5f49c TM |
6834 | } |
6835 | ||
963d8fe5 | 6836 | static const struct rpc_call_ops nfs4_locku_ops = { |
4ce70ada | 6837 | .rpc_call_prepare = nfs4_locku_prepare, |
963d8fe5 | 6838 | .rpc_call_done = nfs4_locku_done, |
06f814a3 | 6839 | .rpc_release = nfs4_locku_release_calldata, |
963d8fe5 TM |
6840 | }; |
6841 | ||
a5d16a4d TM |
6842 | static struct rpc_task *nfs4_do_unlck(struct file_lock *fl, |
6843 | struct nfs_open_context *ctx, | |
6844 | struct nfs4_lock_state *lsp, | |
6845 | struct nfs_seqid *seqid) | |
6846 | { | |
6847 | struct nfs4_unlockdata *data; | |
5138fde0 TM |
6848 | struct rpc_message msg = { |
6849 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCKU], | |
6850 | .rpc_cred = ctx->cred, | |
6851 | }; | |
c970aa85 TM |
6852 | struct rpc_task_setup task_setup_data = { |
6853 | .rpc_client = NFS_CLIENT(lsp->ls_state->inode), | |
5138fde0 | 6854 | .rpc_message = &msg, |
c970aa85 | 6855 | .callback_ops = &nfs4_locku_ops, |
101070ca | 6856 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
6857 | .flags = RPC_TASK_ASYNC, |
6858 | }; | |
a5d16a4d | 6859 | |
fa940720 WAA |
6860 | nfs4_state_protect(NFS_SERVER(lsp->ls_state->inode)->nfs_client, |
6861 | NFS_SP4_MACH_CRED_CLEANUP, &task_setup_data.rpc_client, &msg); | |
6862 | ||
137d6aca FF |
6863 | /* Ensure this is an unlock - when canceling a lock, the |
6864 | * canceled lock is passed in, and it won't be an unlock. | |
6865 | */ | |
6866 | fl->fl_type = F_UNLCK; | |
f30cb757 BC |
6867 | if (fl->fl_flags & FL_CLOSE) |
6868 | set_bit(NFS_CONTEXT_UNLOCK, &ctx->flags); | |
137d6aca | 6869 | |
a5d16a4d TM |
6870 | data = nfs4_alloc_unlockdata(fl, ctx, lsp, seqid); |
6871 | if (data == NULL) { | |
6872 | nfs_free_seqid(seqid); | |
6873 | return ERR_PTR(-ENOMEM); | |
6874 | } | |
6875 | ||
fba83f34 | 6876 | nfs4_init_sequence(&data->arg.seq_args, &data->res.seq_res, 1, 0); |
1174dd1f TM |
6877 | msg.rpc_argp = &data->arg; |
6878 | msg.rpc_resp = &data->res; | |
c970aa85 TM |
6879 | task_setup_data.callback_data = data; |
6880 | return rpc_run_task(&task_setup_data); | |
a5d16a4d TM |
6881 | } |
6882 | ||
faf5f49c TM |
6883 | static int nfs4_proc_unlck(struct nfs4_state *state, int cmd, struct file_lock *request) |
6884 | { | |
65b62a29 TM |
6885 | struct inode *inode = state->inode; |
6886 | struct nfs4_state_owner *sp = state->owner; | |
6887 | struct nfs_inode *nfsi = NFS_I(inode); | |
911d1aaf | 6888 | struct nfs_seqid *seqid; |
1da177e4 | 6889 | struct nfs4_lock_state *lsp; |
06f814a3 | 6890 | struct rpc_task *task; |
b4019c0e | 6891 | struct nfs_seqid *(*alloc_seqid)(struct nfs_seqid_counter *, gfp_t); |
06f814a3 | 6892 | int status = 0; |
536ff0f8 | 6893 | unsigned char fl_flags = request->fl_flags; |
faf5f49c | 6894 | |
8d0a8a9d | 6895 | status = nfs4_set_lock_state(state, request); |
9b073574 TM |
6896 | /* Unlock _before_ we do the RPC call */ |
6897 | request->fl_flags |= FL_EXISTS; | |
65b62a29 TM |
6898 | /* Exclude nfs_delegation_claim_locks() */ |
6899 | mutex_lock(&sp->so_delegreturn_mutex); | |
6900 | /* Exclude nfs4_reclaim_open_stateid() - note nesting! */ | |
19e03c57 | 6901 | down_read(&nfsi->rwsem); |
75575ddf | 6902 | if (locks_lock_inode_wait(inode, request) == -ENOENT) { |
19e03c57 | 6903 | up_read(&nfsi->rwsem); |
65b62a29 | 6904 | mutex_unlock(&sp->so_delegreturn_mutex); |
9b073574 | 6905 | goto out; |
19e03c57 TM |
6906 | } |
6907 | up_read(&nfsi->rwsem); | |
65b62a29 | 6908 | mutex_unlock(&sp->so_delegreturn_mutex); |
8d0a8a9d | 6909 | if (status != 0) |
9b073574 TM |
6910 | goto out; |
6911 | /* Is this a delegated lock? */ | |
8d0a8a9d | 6912 | lsp = request->fl_u.nfs4_fl.owner; |
c5a2a15f TM |
6913 | if (test_bit(NFS_LOCK_INITIALIZED, &lsp->ls_flags) == 0) |
6914 | goto out; | |
b4019c0e TM |
6915 | alloc_seqid = NFS_SERVER(inode)->nfs_client->cl_mvops->alloc_seqid; |
6916 | seqid = alloc_seqid(&lsp->ls_seqid, GFP_KERNEL); | |
9b073574 | 6917 | status = -ENOMEM; |
badc76dd | 6918 | if (IS_ERR(seqid)) |
9b073574 | 6919 | goto out; |
cd3758e3 | 6920 | task = nfs4_do_unlck(request, nfs_file_open_context(request->fl_file), lsp, seqid); |
a5d16a4d TM |
6921 | status = PTR_ERR(task); |
6922 | if (IS_ERR(task)) | |
9b073574 | 6923 | goto out; |
820bf85c | 6924 | status = rpc_wait_for_completion_task(task); |
e6b3c4db | 6925 | rpc_put_task(task); |
9b073574 | 6926 | out: |
536ff0f8 | 6927 | request->fl_flags = fl_flags; |
d1b748a5 | 6928 | trace_nfs4_unlock(request, state, F_SETLK, status); |
1da177e4 LT |
6929 | return status; |
6930 | } | |
6931 | ||
a5d16a4d TM |
6932 | struct nfs4_lockdata { |
6933 | struct nfs_lock_args arg; | |
6934 | struct nfs_lock_res res; | |
6935 | struct nfs4_lock_state *lsp; | |
6936 | struct nfs_open_context *ctx; | |
6937 | struct file_lock fl; | |
26e976a8 | 6938 | unsigned long timestamp; |
a5d16a4d TM |
6939 | int rpc_status; |
6940 | int cancelled; | |
66179efe | 6941 | struct nfs_server *server; |
a5d16a4d TM |
6942 | }; |
6943 | ||
6944 | static struct nfs4_lockdata *nfs4_alloc_lockdata(struct file_lock *fl, | |
8535b2be TM |
6945 | struct nfs_open_context *ctx, struct nfs4_lock_state *lsp, |
6946 | gfp_t gfp_mask) | |
1da177e4 | 6947 | { |
a5d16a4d TM |
6948 | struct nfs4_lockdata *p; |
6949 | struct inode *inode = lsp->ls_state->inode; | |
1da177e4 | 6950 | struct nfs_server *server = NFS_SERVER(inode); |
b4019c0e | 6951 | struct nfs_seqid *(*alloc_seqid)(struct nfs_seqid_counter *, gfp_t); |
a5d16a4d | 6952 | |
8535b2be | 6953 | p = kzalloc(sizeof(*p), gfp_mask); |
a5d16a4d TM |
6954 | if (p == NULL) |
6955 | return NULL; | |
6956 | ||
6957 | p->arg.fh = NFS_FH(inode); | |
6958 | p->arg.fl = &p->fl; | |
8535b2be | 6959 | p->arg.open_seqid = nfs_alloc_seqid(&lsp->ls_state->owner->so_seqid, gfp_mask); |
badc76dd | 6960 | if (IS_ERR(p->arg.open_seqid)) |
2f74c0a0 | 6961 | goto out_free; |
b4019c0e TM |
6962 | alloc_seqid = server->nfs_client->cl_mvops->alloc_seqid; |
6963 | p->arg.lock_seqid = alloc_seqid(&lsp->ls_seqid, gfp_mask); | |
badc76dd | 6964 | if (IS_ERR(p->arg.lock_seqid)) |
2f74c0a0 | 6965 | goto out_free_seqid; |
7539bbab | 6966 | p->arg.lock_owner.clientid = server->nfs_client->cl_clientid; |
48c22eb2 | 6967 | p->arg.lock_owner.id = lsp->ls_seqid.owner_id; |
d035c36c | 6968 | p->arg.lock_owner.s_dev = server->s_dev; |
c1d51931 | 6969 | p->res.lock_seqid = p->arg.lock_seqid; |
a5d16a4d | 6970 | p->lsp = lsp; |
66179efe | 6971 | p->server = server; |
a5d16a4d | 6972 | p->ctx = get_nfs_open_context(ctx); |
7b587e1a N |
6973 | locks_init_lock(&p->fl); |
6974 | locks_copy_lock(&p->fl, fl); | |
a5d16a4d | 6975 | return p; |
2f74c0a0 TM |
6976 | out_free_seqid: |
6977 | nfs_free_seqid(p->arg.open_seqid); | |
a5d16a4d TM |
6978 | out_free: |
6979 | kfree(p); | |
6980 | return NULL; | |
6981 | } | |
6982 | ||
6983 | static void nfs4_lock_prepare(struct rpc_task *task, void *calldata) | |
6984 | { | |
6985 | struct nfs4_lockdata *data = calldata; | |
6986 | struct nfs4_state *state = data->lsp->ls_state; | |
06735b34 | 6987 | |
3110ff80 | 6988 | dprintk("%s: begin!\n", __func__); |
2f74c0a0 | 6989 | if (nfs_wait_on_sequence(data->arg.lock_seqid, task) != 0) |
c8da19b9 | 6990 | goto out_wait; |
a5d16a4d | 6991 | /* Do we need to do an open_to_lock_owner? */ |
6b447539 | 6992 | if (!test_bit(NFS_LOCK_INITIALIZED, &data->lsp->ls_flags)) { |
8fe72bac | 6993 | if (nfs_wait_on_sequence(data->arg.open_seqid, task) != 0) { |
2240a9e2 | 6994 | goto out_release_lock_seqid; |
8fe72bac | 6995 | } |
425c1d4e TM |
6996 | nfs4_stateid_copy(&data->arg.open_stateid, |
6997 | &state->open_stateid); | |
a5d16a4d | 6998 | data->arg.new_lock_owner = 1; |
c1d51931 | 6999 | data->res.open_seqid = data->arg.open_seqid; |
425c1d4e | 7000 | } else { |
2f74c0a0 | 7001 | data->arg.new_lock_owner = 0; |
425c1d4e TM |
7002 | nfs4_stateid_copy(&data->arg.lock_stateid, |
7003 | &data->lsp->ls_stateid); | |
7004 | } | |
5d422301 TM |
7005 | if (!nfs4_valid_open_stateid(state)) { |
7006 | data->rpc_status = -EBADF; | |
7007 | task->tk_action = NULL; | |
7008 | goto out_release_open_seqid; | |
7009 | } | |
26e976a8 | 7010 | data->timestamp = jiffies; |
42e1cca7 | 7011 | if (nfs4_setup_sequence(data->server->nfs_client, |
035168ab | 7012 | &data->arg.seq_args, |
2240a9e2 | 7013 | &data->res.seq_res, |
d9afbd1b | 7014 | task) == 0) |
66179efe | 7015 | return; |
5d422301 | 7016 | out_release_open_seqid: |
2240a9e2 TM |
7017 | nfs_release_seqid(data->arg.open_seqid); |
7018 | out_release_lock_seqid: | |
7019 | nfs_release_seqid(data->arg.lock_seqid); | |
c8da19b9 TM |
7020 | out_wait: |
7021 | nfs4_sequence_done(task, &data->res.seq_res); | |
8fe72bac | 7022 | dprintk("%s: done!, ret = %d\n", __func__, data->rpc_status); |
b257957e AB |
7023 | } |
7024 | ||
a5d16a4d TM |
7025 | static void nfs4_lock_done(struct rpc_task *task, void *calldata) |
7026 | { | |
7027 | struct nfs4_lockdata *data = calldata; | |
39071e6f | 7028 | struct nfs4_lock_state *lsp = data->lsp; |
a5d16a4d | 7029 | |
3110ff80 | 7030 | dprintk("%s: begin!\n", __func__); |
a5d16a4d | 7031 | |
14516c3a TM |
7032 | if (!nfs4_sequence_done(task, &data->res.seq_res)) |
7033 | return; | |
66179efe | 7034 | |
a5d16a4d | 7035 | data->rpc_status = task->tk_status; |
425c1d4e TM |
7036 | switch (task->tk_status) { |
7037 | case 0: | |
2b0143b5 | 7038 | renew_lease(NFS_SERVER(d_inode(data->ctx->dentry)), |
39071e6f | 7039 | data->timestamp); |
a3cf9bca | 7040 | if (data->arg.new_lock && !data->cancelled) { |
c69899a1 | 7041 | data->fl.fl_flags &= ~(FL_SLEEP | FL_ACCESS); |
a3cf9bca | 7042 | if (locks_lock_inode_wait(lsp->ls_state->inode, &data->fl) < 0) |
6ea76bf5 | 7043 | goto out_restart; |
c69899a1 | 7044 | } |
39071e6f TM |
7045 | if (data->arg.new_lock_owner != 0) { |
7046 | nfs_confirm_seqid(&lsp->ls_seqid, 0); | |
7047 | nfs4_stateid_copy(&lsp->ls_stateid, &data->res.stateid); | |
7048 | set_bit(NFS_LOCK_INITIALIZED, &lsp->ls_flags); | |
6ea76bf5 TM |
7049 | } else if (!nfs4_update_lock_stateid(lsp, &data->res.stateid)) |
7050 | goto out_restart; | |
425c1d4e TM |
7051 | break; |
7052 | case -NFS4ERR_BAD_STATEID: | |
7053 | case -NFS4ERR_OLD_STATEID: | |
7054 | case -NFS4ERR_STALE_STATEID: | |
7055 | case -NFS4ERR_EXPIRED: | |
7056 | if (data->arg.new_lock_owner != 0) { | |
6ea76bf5 | 7057 | if (!nfs4_stateid_match(&data->arg.open_stateid, |
425c1d4e | 7058 | &lsp->ls_state->open_stateid)) |
6ea76bf5 TM |
7059 | goto out_restart; |
7060 | } else if (!nfs4_stateid_match(&data->arg.lock_stateid, | |
425c1d4e | 7061 | &lsp->ls_stateid)) |
6ea76bf5 | 7062 | goto out_restart; |
a5d16a4d | 7063 | } |
a3cf9bca | 7064 | out_done: |
3110ff80 | 7065 | dprintk("%s: done, ret = %d!\n", __func__, data->rpc_status); |
6ea76bf5 TM |
7066 | return; |
7067 | out_restart: | |
7068 | if (!data->cancelled) | |
7069 | rpc_restart_call_prepare(task); | |
7070 | goto out_done; | |
a5d16a4d TM |
7071 | } |
7072 | ||
7073 | static void nfs4_lock_release(void *calldata) | |
7074 | { | |
7075 | struct nfs4_lockdata *data = calldata; | |
7076 | ||
3110ff80 | 7077 | dprintk("%s: begin!\n", __func__); |
2f74c0a0 | 7078 | nfs_free_seqid(data->arg.open_seqid); |
6ea76bf5 | 7079 | if (data->cancelled && data->rpc_status == 0) { |
a5d16a4d TM |
7080 | struct rpc_task *task; |
7081 | task = nfs4_do_unlck(&data->fl, data->ctx, data->lsp, | |
7082 | data->arg.lock_seqid); | |
7083 | if (!IS_ERR(task)) | |
bf294b41 | 7084 | rpc_put_task_async(task); |
3110ff80 | 7085 | dprintk("%s: cancelling lock!\n", __func__); |
a5d16a4d TM |
7086 | } else |
7087 | nfs_free_seqid(data->arg.lock_seqid); | |
7088 | nfs4_put_lock_state(data->lsp); | |
7089 | put_nfs_open_context(data->ctx); | |
7090 | kfree(data); | |
3110ff80 | 7091 | dprintk("%s: done!\n", __func__); |
a5d16a4d TM |
7092 | } |
7093 | ||
7094 | static const struct rpc_call_ops nfs4_lock_ops = { | |
7095 | .rpc_call_prepare = nfs4_lock_prepare, | |
7096 | .rpc_call_done = nfs4_lock_done, | |
7097 | .rpc_release = nfs4_lock_release, | |
7098 | }; | |
7099 | ||
2bee72a6 TM |
7100 | static void nfs4_handle_setlk_error(struct nfs_server *server, struct nfs4_lock_state *lsp, int new_lock_owner, int error) |
7101 | { | |
2bee72a6 TM |
7102 | switch (error) { |
7103 | case -NFS4ERR_ADMIN_REVOKED: | |
d7f3e4bf | 7104 | case -NFS4ERR_EXPIRED: |
2bee72a6 | 7105 | case -NFS4ERR_BAD_STATEID: |
ecac799a | 7106 | lsp->ls_seqid.flags &= ~NFS_SEQID_CONFIRMED; |
2bee72a6 | 7107 | if (new_lock_owner != 0 || |
795a88c9 | 7108 | test_bit(NFS_LOCK_INITIALIZED, &lsp->ls_flags) != 0) |
ecac799a | 7109 | nfs4_schedule_stateid_recovery(server, lsp->ls_state); |
a2c0b9e2 TM |
7110 | break; |
7111 | case -NFS4ERR_STALE_STATEID: | |
a2c0b9e2 | 7112 | lsp->ls_seqid.flags &= ~NFS_SEQID_CONFIRMED; |
ecac799a | 7113 | nfs4_schedule_lease_recovery(server->nfs_client); |
8b98a532 | 7114 | } |
2bee72a6 TM |
7115 | } |
7116 | ||
afe6c27c | 7117 | static int _nfs4_do_setlk(struct nfs4_state *state, int cmd, struct file_lock *fl, int recovery_type) |
a5d16a4d TM |
7118 | { |
7119 | struct nfs4_lockdata *data; | |
7120 | struct rpc_task *task; | |
5138fde0 TM |
7121 | struct rpc_message msg = { |
7122 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCK], | |
7123 | .rpc_cred = state->owner->so_cred, | |
7124 | }; | |
c970aa85 TM |
7125 | struct rpc_task_setup task_setup_data = { |
7126 | .rpc_client = NFS_CLIENT(state->inode), | |
5138fde0 | 7127 | .rpc_message = &msg, |
c970aa85 | 7128 | .callback_ops = &nfs4_lock_ops, |
101070ca | 7129 | .workqueue = nfsiod_workqueue, |
61296507 | 7130 | .flags = RPC_TASK_ASYNC | RPC_TASK_CRED_NOREF, |
c970aa85 | 7131 | }; |
a5d16a4d TM |
7132 | int ret; |
7133 | ||
3110ff80 | 7134 | dprintk("%s: begin!\n", __func__); |
cd3758e3 | 7135 | data = nfs4_alloc_lockdata(fl, nfs_file_open_context(fl->fl_file), |
8535b2be TM |
7136 | fl->fl_u.nfs4_fl.owner, |
7137 | recovery_type == NFS_LOCK_NEW ? GFP_KERNEL : GFP_NOFS); | |
a5d16a4d TM |
7138 | if (data == NULL) |
7139 | return -ENOMEM; | |
7140 | if (IS_SETLKW(cmd)) | |
7141 | data->arg.block = 1; | |
fba83f34 AS |
7142 | nfs4_init_sequence(&data->arg.seq_args, &data->res.seq_res, 1, |
7143 | recovery_type > NFS_LOCK_NEW); | |
1174dd1f TM |
7144 | msg.rpc_argp = &data->arg; |
7145 | msg.rpc_resp = &data->res; | |
c970aa85 | 7146 | task_setup_data.callback_data = data; |
8fe72bac TM |
7147 | if (recovery_type > NFS_LOCK_NEW) { |
7148 | if (recovery_type == NFS_LOCK_RECLAIM) | |
7149 | data->arg.reclaim = NFS_LOCK_RECLAIM; | |
c69899a1 TM |
7150 | } else |
7151 | data->arg.new_lock = 1; | |
c970aa85 | 7152 | task = rpc_run_task(&task_setup_data); |
7a1218a2 | 7153 | if (IS_ERR(task)) |
a5d16a4d | 7154 | return PTR_ERR(task); |
820bf85c | 7155 | ret = rpc_wait_for_completion_task(task); |
a5d16a4d TM |
7156 | if (ret == 0) { |
7157 | ret = data->rpc_status; | |
2bee72a6 TM |
7158 | if (ret) |
7159 | nfs4_handle_setlk_error(data->server, data->lsp, | |
7160 | data->arg.new_lock_owner, ret); | |
a5d16a4d | 7161 | } else |
a7a3b1e9 | 7162 | data->cancelled = true; |
3d1a90ab | 7163 | trace_nfs4_set_lock(fl, state, &data->res.stateid, cmd, ret); |
e6b3c4db | 7164 | rpc_put_task(task); |
3110ff80 | 7165 | dprintk("%s: done, ret = %d!\n", __func__, ret); |
a5d16a4d | 7166 | return ret; |
1da177e4 LT |
7167 | } |
7168 | ||
7169 | static int nfs4_lock_reclaim(struct nfs4_state *state, struct file_lock *request) | |
7170 | { | |
202b50dc | 7171 | struct nfs_server *server = NFS_SERVER(state->inode); |
05ffe24f TM |
7172 | struct nfs4_exception exception = { |
7173 | .inode = state->inode, | |
7174 | }; | |
202b50dc TM |
7175 | int err; |
7176 | ||
7177 | do { | |
42a2d13e TM |
7178 | /* Cache the lock if possible... */ |
7179 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) != 0) | |
7180 | return 0; | |
afe6c27c | 7181 | err = _nfs4_do_setlk(state, F_SETLK, request, NFS_LOCK_RECLAIM); |
168667c4 | 7182 | if (err != -NFS4ERR_DELAY) |
202b50dc TM |
7183 | break; |
7184 | nfs4_handle_exception(server, err, &exception); | |
7185 | } while (exception.retry); | |
7186 | return err; | |
1da177e4 LT |
7187 | } |
7188 | ||
7189 | static int nfs4_lock_expired(struct nfs4_state *state, struct file_lock *request) | |
7190 | { | |
202b50dc | 7191 | struct nfs_server *server = NFS_SERVER(state->inode); |
05ffe24f TM |
7192 | struct nfs4_exception exception = { |
7193 | .inode = state->inode, | |
7194 | }; | |
202b50dc TM |
7195 | int err; |
7196 | ||
6bfc93ef TM |
7197 | err = nfs4_set_lock_state(state, request); |
7198 | if (err != 0) | |
7199 | return err; | |
f6de7a39 | 7200 | if (!recover_lost_locks) { |
ef1820f9 N |
7201 | set_bit(NFS_LOCK_LOST, &request->fl_u.nfs4_fl.owner->ls_flags); |
7202 | return 0; | |
7203 | } | |
202b50dc | 7204 | do { |
42a2d13e TM |
7205 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) != 0) |
7206 | return 0; | |
afe6c27c | 7207 | err = _nfs4_do_setlk(state, F_SETLK, request, NFS_LOCK_EXPIRED); |
a9ed2e25 TM |
7208 | switch (err) { |
7209 | default: | |
7210 | goto out; | |
7211 | case -NFS4ERR_GRACE: | |
7212 | case -NFS4ERR_DELAY: | |
7213 | nfs4_handle_exception(server, err, &exception); | |
7214 | err = 0; | |
7215 | } | |
202b50dc | 7216 | } while (exception.retry); |
a9ed2e25 | 7217 | out: |
202b50dc | 7218 | return err; |
1da177e4 LT |
7219 | } |
7220 | ||
f062eb6c | 7221 | #if defined(CONFIG_NFS_V4_1) |
b01dd1d8 BS |
7222 | static int nfs41_lock_expired(struct nfs4_state *state, struct file_lock *request) |
7223 | { | |
c5896fc8 TM |
7224 | struct nfs4_lock_state *lsp; |
7225 | int status; | |
b01dd1d8 | 7226 | |
c5896fc8 TM |
7227 | status = nfs4_set_lock_state(state, request); |
7228 | if (status != 0) | |
7229 | return status; | |
7230 | lsp = request->fl_u.nfs4_fl.owner; | |
7231 | if (test_bit(NFS_LOCK_INITIALIZED, &lsp->ls_flags) || | |
7232 | test_bit(NFS_LOCK_LOST, &lsp->ls_flags)) | |
7233 | return 0; | |
81b68de4 | 7234 | return nfs4_lock_expired(state, request); |
f062eb6c BS |
7235 | } |
7236 | #endif | |
7237 | ||
1da177e4 LT |
7238 | static int _nfs4_proc_setlk(struct nfs4_state *state, int cmd, struct file_lock *request) |
7239 | { | |
19e03c57 | 7240 | struct nfs_inode *nfsi = NFS_I(state->inode); |
11476e9d | 7241 | struct nfs4_state_owner *sp = state->owner; |
01c3b861 | 7242 | unsigned char fl_flags = request->fl_flags; |
1ea67dbd | 7243 | int status; |
1da177e4 | 7244 | |
01c3b861 | 7245 | request->fl_flags |= FL_ACCESS; |
75575ddf | 7246 | status = locks_lock_inode_wait(state->inode, request); |
01c3b861 TM |
7247 | if (status < 0) |
7248 | goto out; | |
11476e9d | 7249 | mutex_lock(&sp->so_delegreturn_mutex); |
19e03c57 | 7250 | down_read(&nfsi->rwsem); |
01c3b861 | 7251 | if (test_bit(NFS_DELEGATED_STATE, &state->flags)) { |
01c3b861 | 7252 | /* Yes: cache locks! */ |
01c3b861 | 7253 | /* ...but avoid races with delegation recall... */ |
19e03c57 | 7254 | request->fl_flags = fl_flags & ~FL_SLEEP; |
75575ddf | 7255 | status = locks_lock_inode_wait(state->inode, request); |
c69899a1 | 7256 | up_read(&nfsi->rwsem); |
11476e9d | 7257 | mutex_unlock(&sp->so_delegreturn_mutex); |
9a99af49 | 7258 | goto out; |
9a99af49 | 7259 | } |
19e03c57 | 7260 | up_read(&nfsi->rwsem); |
11476e9d | 7261 | mutex_unlock(&sp->so_delegreturn_mutex); |
c69899a1 | 7262 | status = _nfs4_do_setlk(state, cmd, request, NFS_LOCK_NEW); |
01c3b861 TM |
7263 | out: |
7264 | request->fl_flags = fl_flags; | |
1da177e4 LT |
7265 | return status; |
7266 | } | |
7267 | ||
7268 | static int nfs4_proc_setlk(struct nfs4_state *state, int cmd, struct file_lock *request) | |
7269 | { | |
a1d0b5ee TM |
7270 | struct nfs4_exception exception = { |
7271 | .state = state, | |
05ffe24f | 7272 | .inode = state->inode, |
0688e64b | 7273 | .interruptible = true, |
a1d0b5ee | 7274 | }; |
1da177e4 LT |
7275 | int err; |
7276 | ||
7277 | do { | |
965b5d67 TM |
7278 | err = _nfs4_proc_setlk(state, cmd, request); |
7279 | if (err == -NFS4ERR_DENIED) | |
7280 | err = -EAGAIN; | |
1da177e4 | 7281 | err = nfs4_handle_exception(NFS_SERVER(state->inode), |
965b5d67 | 7282 | err, &exception); |
1da177e4 LT |
7283 | } while (exception.retry); |
7284 | return err; | |
7285 | } | |
7286 | ||
d2f3a7f9 JL |
7287 | #define NFS4_LOCK_MINTIMEOUT (1 * HZ) |
7288 | #define NFS4_LOCK_MAXTIMEOUT (30 * HZ) | |
7289 | ||
7290 | static int | |
a1d617d8 JL |
7291 | nfs4_retry_setlk_simple(struct nfs4_state *state, int cmd, |
7292 | struct file_lock *request) | |
d2f3a7f9 JL |
7293 | { |
7294 | int status = -ERESTARTSYS; | |
7295 | unsigned long timeout = NFS4_LOCK_MINTIMEOUT; | |
7296 | ||
7297 | while(!signalled()) { | |
7298 | status = nfs4_proc_setlk(state, cmd, request); | |
7299 | if ((status != -EAGAIN) || IS_SETLK(cmd)) | |
7300 | break; | |
7301 | freezable_schedule_timeout_interruptible(timeout); | |
7302 | timeout *= 2; | |
7303 | timeout = min_t(unsigned long, NFS4_LOCK_MAXTIMEOUT, timeout); | |
7304 | status = -ERESTARTSYS; | |
7305 | } | |
7306 | return status; | |
7307 | } | |
7308 | ||
a1d617d8 JL |
7309 | #ifdef CONFIG_NFS_V4_1 |
7310 | struct nfs4_lock_waiter { | |
a1d617d8 | 7311 | struct inode *inode; |
86438186 TM |
7312 | struct nfs_lowner owner; |
7313 | wait_queue_entry_t wait; | |
a1d617d8 JL |
7314 | }; |
7315 | ||
7316 | static int | |
ac6424b9 | 7317 | nfs4_wake_lock_waiter(wait_queue_entry_t *wait, unsigned int mode, int flags, void *key) |
a1d617d8 | 7318 | { |
86438186 TM |
7319 | struct nfs4_lock_waiter *waiter = |
7320 | container_of(wait, struct nfs4_lock_waiter, wait); | |
a1d617d8 | 7321 | |
57174593 JL |
7322 | /* NULL key means to wake up everyone */ |
7323 | if (key) { | |
7324 | struct cb_notify_lock_args *cbnl = key; | |
7325 | struct nfs_lowner *lowner = &cbnl->cbnl_owner, | |
86438186 | 7326 | *wowner = &waiter->owner; |
a1d617d8 | 7327 | |
57174593 JL |
7328 | /* Only wake if the callback was for the same owner. */ |
7329 | if (lowner->id != wowner->id || lowner->s_dev != wowner->s_dev) | |
7330 | return 0; | |
a1d617d8 | 7331 | |
57174593 JL |
7332 | /* Make sure it's for the right inode */ |
7333 | if (nfs_compare_fh(NFS_FH(waiter->inode), &cbnl->cbnl_fh)) | |
7334 | return 0; | |
57174593 | 7335 | } |
a1d617d8 | 7336 | |
86438186 | 7337 | return woken_wake_function(wait, mode, flags, key); |
a1d617d8 JL |
7338 | } |
7339 | ||
7340 | static int | |
7341 | nfs4_retry_setlk(struct nfs4_state *state, int cmd, struct file_lock *request) | |
7342 | { | |
a1d617d8 JL |
7343 | struct nfs4_lock_state *lsp = request->fl_u.nfs4_fl.owner; |
7344 | struct nfs_server *server = NFS_SERVER(state->inode); | |
7345 | struct nfs_client *clp = server->nfs_client; | |
7346 | wait_queue_head_t *q = &clp->cl_lock_waitq; | |
86438186 TM |
7347 | struct nfs4_lock_waiter waiter = { |
7348 | .inode = state->inode, | |
7349 | .owner = { .clientid = clp->cl_clientid, | |
7350 | .id = lsp->ls_seqid.owner_id, | |
7351 | .s_dev = server->s_dev }, | |
7352 | }; | |
7353 | int status; | |
a1d617d8 JL |
7354 | |
7355 | /* Don't bother with waitqueue if we don't expect a callback */ | |
7356 | if (!test_bit(NFS_STATE_MAY_NOTIFY_LOCK, &state->flags)) | |
7357 | return nfs4_retry_setlk_simple(state, cmd, request); | |
7358 | ||
86438186 TM |
7359 | init_wait(&waiter.wait); |
7360 | waiter.wait.func = nfs4_wake_lock_waiter; | |
7361 | add_wait_queue(q, &waiter.wait); | |
a1d617d8 | 7362 | |
86438186 | 7363 | do { |
a1d617d8 | 7364 | status = nfs4_proc_setlk(state, cmd, request); |
86438186 | 7365 | if (status != -EAGAIN || IS_SETLK(cmd)) |
a1d617d8 JL |
7366 | break; |
7367 | ||
7368 | status = -ERESTARTSYS; | |
52b042ab | 7369 | freezer_do_not_count(); |
86438186 TM |
7370 | wait_woken(&waiter.wait, TASK_INTERRUPTIBLE, |
7371 | NFS4_LOCK_MAXTIMEOUT); | |
52b042ab | 7372 | freezer_count(); |
86438186 TM |
7373 | } while (!signalled()); |
7374 | ||
7375 | remove_wait_queue(q, &waiter.wait); | |
a1d617d8 | 7376 | |
a1d617d8 JL |
7377 | return status; |
7378 | } | |
7379 | #else /* !CONFIG_NFS_V4_1 */ | |
7380 | static inline int | |
7381 | nfs4_retry_setlk(struct nfs4_state *state, int cmd, struct file_lock *request) | |
7382 | { | |
7383 | return nfs4_retry_setlk_simple(state, cmd, request); | |
7384 | } | |
7385 | #endif | |
7386 | ||
1da177e4 LT |
7387 | static int |
7388 | nfs4_proc_lock(struct file *filp, int cmd, struct file_lock *request) | |
7389 | { | |
7390 | struct nfs_open_context *ctx; | |
7391 | struct nfs4_state *state; | |
1da177e4 LT |
7392 | int status; |
7393 | ||
7394 | /* verify open state */ | |
cd3758e3 | 7395 | ctx = nfs_file_open_context(filp); |
1da177e4 LT |
7396 | state = ctx->state; |
7397 | ||
d953126a TM |
7398 | if (IS_GETLK(cmd)) { |
7399 | if (state != NULL) | |
7400 | return nfs4_proc_getlk(state, F_GETLK, request); | |
7401 | return 0; | |
7402 | } | |
1da177e4 LT |
7403 | |
7404 | if (!(IS_SETLK(cmd) || IS_SETLKW(cmd))) | |
7405 | return -EINVAL; | |
7406 | ||
d953126a TM |
7407 | if (request->fl_type == F_UNLCK) { |
7408 | if (state != NULL) | |
7409 | return nfs4_proc_unlck(state, cmd, request); | |
7410 | return 0; | |
7411 | } | |
1da177e4 | 7412 | |
d953126a TM |
7413 | if (state == NULL) |
7414 | return -ENOLCK; | |
1ea67dbd JL |
7415 | |
7416 | if ((request->fl_flags & FL_POSIX) && | |
7417 | !test_bit(NFS_STATE_POSIX_LOCKS, &state->flags)) | |
7418 | return -ENOLCK; | |
7419 | ||
fcfa4470 BC |
7420 | /* |
7421 | * Don't rely on the VFS having checked the file open mode, | |
7422 | * since it won't do this for flock() locks. | |
7423 | */ | |
7424 | switch (request->fl_type) { | |
7425 | case F_RDLCK: | |
7426 | if (!(filp->f_mode & FMODE_READ)) | |
7427 | return -EBADF; | |
7428 | break; | |
7429 | case F_WRLCK: | |
7430 | if (!(filp->f_mode & FMODE_WRITE)) | |
7431 | return -EBADF; | |
7432 | } | |
7433 | ||
1ea67dbd JL |
7434 | status = nfs4_set_lock_state(state, request); |
7435 | if (status != 0) | |
7436 | return status; | |
7437 | ||
d2f3a7f9 | 7438 | return nfs4_retry_setlk(state, cmd, request); |
1da177e4 LT |
7439 | } |
7440 | ||
db4f2e63 | 7441 | int nfs4_lock_delegation_recall(struct file_lock *fl, struct nfs4_state *state, const nfs4_stateid *stateid) |
888e694c TM |
7442 | { |
7443 | struct nfs_server *server = NFS_SERVER(state->inode); | |
888e694c TM |
7444 | int err; |
7445 | ||
7446 | err = nfs4_set_lock_state(state, fl); | |
7447 | if (err != 0) | |
db4f2e63 | 7448 | return err; |
3d7a9520 OK |
7449 | do { |
7450 | err = _nfs4_do_setlk(state, F_SETLK, fl, NFS_LOCK_NEW); | |
7451 | if (err != -NFS4ERR_DELAY) | |
7452 | break; | |
7453 | ssleep(1); | |
7454 | } while (err == -NFS4ERR_DELAY); | |
dce2630c | 7455 | return nfs4_handle_delegation_recall_error(server, state, stateid, fl, err); |
888e694c | 7456 | } |
6b3b5496 | 7457 | |
cf470c3e TM |
7458 | struct nfs_release_lockowner_data { |
7459 | struct nfs4_lock_state *lsp; | |
5ae67c4f | 7460 | struct nfs_server *server; |
cf470c3e | 7461 | struct nfs_release_lockowner_args args; |
b7e63a10 | 7462 | struct nfs_release_lockowner_res res; |
60ea6812 | 7463 | unsigned long timestamp; |
cf470c3e TM |
7464 | }; |
7465 | ||
fbd4bfd1 CL |
7466 | static void nfs4_release_lockowner_prepare(struct rpc_task *task, void *calldata) |
7467 | { | |
7468 | struct nfs_release_lockowner_data *data = calldata; | |
5b53dc88 | 7469 | struct nfs_server *server = data->server; |
7981c8a6 AS |
7470 | nfs4_setup_sequence(server->nfs_client, &data->args.seq_args, |
7471 | &data->res.seq_res, task); | |
5b53dc88 | 7472 | data->args.lock_owner.clientid = server->nfs_client->cl_clientid; |
60ea6812 | 7473 | data->timestamp = jiffies; |
fbd4bfd1 CL |
7474 | } |
7475 | ||
7476 | static void nfs4_release_lockowner_done(struct rpc_task *task, void *calldata) | |
7477 | { | |
7478 | struct nfs_release_lockowner_data *data = calldata; | |
60ea6812 CL |
7479 | struct nfs_server *server = data->server; |
7480 | ||
b7e63a10 | 7481 | nfs40_sequence_done(task, &data->res.seq_res); |
60ea6812 CL |
7482 | |
7483 | switch (task->tk_status) { | |
7484 | case 0: | |
7485 | renew_lease(server, data->timestamp); | |
7486 | break; | |
7487 | case -NFS4ERR_STALE_CLIENTID: | |
7488 | case -NFS4ERR_EXPIRED: | |
5b53dc88 KM |
7489 | nfs4_schedule_lease_recovery(server->nfs_client); |
7490 | break; | |
60ea6812 CL |
7491 | case -NFS4ERR_LEASE_MOVED: |
7492 | case -NFS4ERR_DELAY: | |
8478eaa1 N |
7493 | if (nfs4_async_handle_error(task, server, |
7494 | NULL, NULL) == -EAGAIN) | |
60ea6812 CL |
7495 | rpc_restart_call_prepare(task); |
7496 | } | |
fbd4bfd1 CL |
7497 | } |
7498 | ||
d3c7b7cc TM |
7499 | static void nfs4_release_lockowner_release(void *calldata) |
7500 | { | |
cf470c3e | 7501 | struct nfs_release_lockowner_data *data = calldata; |
5ae67c4f | 7502 | nfs4_free_lock_state(data->server, data->lsp); |
d3c7b7cc TM |
7503 | kfree(calldata); |
7504 | } | |
7505 | ||
17280175 | 7506 | static const struct rpc_call_ops nfs4_release_lockowner_ops = { |
fbd4bfd1 CL |
7507 | .rpc_call_prepare = nfs4_release_lockowner_prepare, |
7508 | .rpc_call_done = nfs4_release_lockowner_done, | |
d3c7b7cc TM |
7509 | .rpc_release = nfs4_release_lockowner_release, |
7510 | }; | |
7511 | ||
f1cdae87 JL |
7512 | static void |
7513 | nfs4_release_lockowner(struct nfs_server *server, struct nfs4_lock_state *lsp) | |
d3c7b7cc | 7514 | { |
cf470c3e | 7515 | struct nfs_release_lockowner_data *data; |
d3c7b7cc TM |
7516 | struct rpc_message msg = { |
7517 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RELEASE_LOCKOWNER], | |
7518 | }; | |
7519 | ||
7520 | if (server->nfs_client->cl_mvops->minor_version != 0) | |
f1cdae87 | 7521 | return; |
fbd4bfd1 | 7522 | |
cf470c3e TM |
7523 | data = kmalloc(sizeof(*data), GFP_NOFS); |
7524 | if (!data) | |
f1cdae87 | 7525 | return; |
cf470c3e | 7526 | data->lsp = lsp; |
5ae67c4f | 7527 | data->server = server; |
cf470c3e TM |
7528 | data->args.lock_owner.clientid = server->nfs_client->cl_clientid; |
7529 | data->args.lock_owner.id = lsp->ls_seqid.owner_id; | |
7530 | data->args.lock_owner.s_dev = server->s_dev; | |
fbd4bfd1 | 7531 | |
cf470c3e | 7532 | msg.rpc_argp = &data->args; |
b7e63a10 | 7533 | msg.rpc_resp = &data->res; |
fba83f34 | 7534 | nfs4_init_sequence(&data->args.seq_args, &data->res.seq_res, 0, 0); |
cf470c3e | 7535 | rpc_call_async(server->client, &msg, 0, &nfs4_release_lockowner_ops, data); |
d3c7b7cc TM |
7536 | } |
7537 | ||
aa1870af BF |
7538 | #define XATTR_NAME_NFSV4_ACL "system.nfs4_acl" |
7539 | ||
d9a82a04 | 7540 | static int nfs4_xattr_set_nfs4_acl(const struct xattr_handler *handler, |
e65ce2a5 | 7541 | struct user_namespace *mnt_userns, |
59301226 AV |
7542 | struct dentry *unused, struct inode *inode, |
7543 | const char *key, const void *buf, | |
7544 | size_t buflen, int flags) | |
6b3b5496 | 7545 | { |
59301226 | 7546 | return nfs4_proc_set_acl(inode, buf, buflen); |
6b3b5496 BF |
7547 | } |
7548 | ||
d9a82a04 | 7549 | static int nfs4_xattr_get_nfs4_acl(const struct xattr_handler *handler, |
b296821a AV |
7550 | struct dentry *unused, struct inode *inode, |
7551 | const char *key, void *buf, size_t buflen) | |
6b3b5496 | 7552 | { |
b296821a | 7553 | return nfs4_proc_get_acl(inode, buf, buflen); |
6b3b5496 BF |
7554 | } |
7555 | ||
764a5c6b | 7556 | static bool nfs4_xattr_list_nfs4_acl(struct dentry *dentry) |
6b3b5496 | 7557 | { |
764a5c6b | 7558 | return nfs4_server_supports_acls(NFS_SERVER(d_inode(dentry))); |
6b3b5496 BF |
7559 | } |
7560 | ||
c9bccef6 | 7561 | #ifdef CONFIG_NFS_V4_SECURITY_LABEL |
c9bccef6 | 7562 | |
d9a82a04 | 7563 | static int nfs4_xattr_set_nfs4_label(const struct xattr_handler *handler, |
e65ce2a5 | 7564 | struct user_namespace *mnt_userns, |
59301226 AV |
7565 | struct dentry *unused, struct inode *inode, |
7566 | const char *key, const void *buf, | |
7567 | size_t buflen, int flags) | |
c9bccef6 DQ |
7568 | { |
7569 | if (security_ismaclabel(key)) | |
59301226 | 7570 | return nfs4_set_security_label(inode, buf, buflen); |
c9bccef6 DQ |
7571 | |
7572 | return -EOPNOTSUPP; | |
7573 | } | |
7574 | ||
d9a82a04 | 7575 | static int nfs4_xattr_get_nfs4_label(const struct xattr_handler *handler, |
b296821a AV |
7576 | struct dentry *unused, struct inode *inode, |
7577 | const char *key, void *buf, size_t buflen) | |
c9bccef6 DQ |
7578 | { |
7579 | if (security_ismaclabel(key)) | |
b296821a | 7580 | return nfs4_get_security_label(inode, buf, buflen); |
c9bccef6 DQ |
7581 | return -EOPNOTSUPP; |
7582 | } | |
7583 | ||
c4803c49 AG |
7584 | static ssize_t |
7585 | nfs4_listxattr_nfs4_label(struct inode *inode, char *list, size_t list_len) | |
c9bccef6 | 7586 | { |
c4803c49 | 7587 | int len = 0; |
c9bccef6 | 7588 | |
c4803c49 AG |
7589 | if (nfs_server_capable(inode, NFS_CAP_SECURITY_LABEL)) { |
7590 | len = security_inode_listsecurity(inode, list, list_len); | |
82c596eb | 7591 | if (len >= 0 && list_len && len > list_len) |
c4803c49 | 7592 | return -ERANGE; |
c9bccef6 DQ |
7593 | } |
7594 | return len; | |
7595 | } | |
7596 | ||
7597 | static const struct xattr_handler nfs4_xattr_nfs4_label_handler = { | |
7598 | .prefix = XATTR_SECURITY_PREFIX, | |
c9bccef6 DQ |
7599 | .get = nfs4_xattr_get_nfs4_label, |
7600 | .set = nfs4_xattr_set_nfs4_label, | |
7601 | }; | |
c9bccef6 | 7602 | |
c4803c49 AG |
7603 | #else |
7604 | ||
7605 | static ssize_t | |
7606 | nfs4_listxattr_nfs4_label(struct inode *inode, char *list, size_t list_len) | |
7607 | { | |
7608 | return 0; | |
7609 | } | |
7610 | ||
7611 | #endif | |
c9bccef6 | 7612 | |
012a211a FL |
7613 | #ifdef CONFIG_NFS_V4_2 |
7614 | static int nfs4_xattr_set_nfs4_user(const struct xattr_handler *handler, | |
e65ce2a5 | 7615 | struct user_namespace *mnt_userns, |
012a211a FL |
7616 | struct dentry *unused, struct inode *inode, |
7617 | const char *key, const void *buf, | |
7618 | size_t buflen, int flags) | |
7619 | { | |
7620 | struct nfs_access_entry cache; | |
95ad37f9 | 7621 | int ret; |
012a211a FL |
7622 | |
7623 | if (!nfs_server_capable(inode, NFS_CAP_XATTR)) | |
7624 | return -EOPNOTSUPP; | |
7625 | ||
7626 | /* | |
7627 | * There is no mapping from the MAY_* flags to the NFS_ACCESS_XA* | |
7628 | * flags right now. Handling of xattr operations use the normal | |
7629 | * file read/write permissions. | |
7630 | * | |
7631 | * Just in case the server has other ideas (which RFC 8276 allows), | |
7632 | * do a cached access check for the XA* flags to possibly avoid | |
7633 | * doing an RPC and getting EACCES back. | |
7634 | */ | |
7635 | if (!nfs_access_get_cached(inode, current_cred(), &cache, true)) { | |
7636 | if (!(cache.mask & NFS_ACCESS_XAWRITE)) | |
7637 | return -EACCES; | |
7638 | } | |
7639 | ||
95ad37f9 FL |
7640 | if (buf == NULL) { |
7641 | ret = nfs42_proc_removexattr(inode, key); | |
7642 | if (!ret) | |
7643 | nfs4_xattr_cache_remove(inode, key); | |
7644 | } else { | |
7645 | ret = nfs42_proc_setxattr(inode, key, buf, buflen, flags); | |
7646 | if (!ret) | |
7647 | nfs4_xattr_cache_add(inode, key, buf, NULL, buflen); | |
7648 | } | |
7649 | ||
7650 | return ret; | |
012a211a FL |
7651 | } |
7652 | ||
7653 | static int nfs4_xattr_get_nfs4_user(const struct xattr_handler *handler, | |
7654 | struct dentry *unused, struct inode *inode, | |
7655 | const char *key, void *buf, size_t buflen) | |
7656 | { | |
7657 | struct nfs_access_entry cache; | |
95ad37f9 | 7658 | ssize_t ret; |
012a211a FL |
7659 | |
7660 | if (!nfs_server_capable(inode, NFS_CAP_XATTR)) | |
7661 | return -EOPNOTSUPP; | |
7662 | ||
7663 | if (!nfs_access_get_cached(inode, current_cred(), &cache, true)) { | |
7664 | if (!(cache.mask & NFS_ACCESS_XAREAD)) | |
7665 | return -EACCES; | |
7666 | } | |
7667 | ||
1f3208b2 | 7668 | ret = nfs_revalidate_inode(inode, NFS_INO_INVALID_CHANGE); |
95ad37f9 FL |
7669 | if (ret) |
7670 | return ret; | |
7671 | ||
7672 | ret = nfs4_xattr_cache_get(inode, key, buf, buflen); | |
7673 | if (ret >= 0 || (ret < 0 && ret != -ENOENT)) | |
7674 | return ret; | |
7675 | ||
7676 | ret = nfs42_proc_getxattr(inode, key, buf, buflen); | |
7677 | ||
7678 | return ret; | |
012a211a FL |
7679 | } |
7680 | ||
7681 | static ssize_t | |
7682 | nfs4_listxattr_nfs4_user(struct inode *inode, char *list, size_t list_len) | |
7683 | { | |
7684 | u64 cookie; | |
7685 | bool eof; | |
95ad37f9 | 7686 | ssize_t ret, size; |
012a211a FL |
7687 | char *buf; |
7688 | size_t buflen; | |
7689 | struct nfs_access_entry cache; | |
7690 | ||
7691 | if (!nfs_server_capable(inode, NFS_CAP_XATTR)) | |
7692 | return 0; | |
7693 | ||
7694 | if (!nfs_access_get_cached(inode, current_cred(), &cache, true)) { | |
7695 | if (!(cache.mask & NFS_ACCESS_XALIST)) | |
7696 | return 0; | |
7697 | } | |
7698 | ||
1f3208b2 | 7699 | ret = nfs_revalidate_inode(inode, NFS_INO_INVALID_CHANGE); |
95ad37f9 FL |
7700 | if (ret) |
7701 | return ret; | |
7702 | ||
7703 | ret = nfs4_xattr_cache_list(inode, list, list_len); | |
7704 | if (ret >= 0 || (ret < 0 && ret != -ENOENT)) | |
7705 | return ret; | |
7706 | ||
012a211a FL |
7707 | cookie = 0; |
7708 | eof = false; | |
7709 | buflen = list_len ? list_len : XATTR_LIST_MAX; | |
7710 | buf = list_len ? list : NULL; | |
7711 | size = 0; | |
7712 | ||
7713 | while (!eof) { | |
7714 | ret = nfs42_proc_listxattrs(inode, buf, buflen, | |
7715 | &cookie, &eof); | |
7716 | if (ret < 0) | |
7717 | return ret; | |
7718 | ||
7719 | if (list_len) { | |
7720 | buf += ret; | |
7721 | buflen -= ret; | |
7722 | } | |
7723 | size += ret; | |
7724 | } | |
7725 | ||
95ad37f9 FL |
7726 | if (list_len) |
7727 | nfs4_xattr_cache_set_list(inode, list, size); | |
7728 | ||
012a211a FL |
7729 | return size; |
7730 | } | |
7731 | ||
7732 | #else | |
7733 | ||
7734 | static ssize_t | |
7735 | nfs4_listxattr_nfs4_user(struct inode *inode, char *list, size_t list_len) | |
7736 | { | |
7737 | return 0; | |
7738 | } | |
7739 | #endif /* CONFIG_NFS_V4_2 */ | |
7740 | ||
533eb461 AA |
7741 | /* |
7742 | * nfs_fhget will use either the mounted_on_fileid or the fileid | |
7743 | */ | |
69aaaae1 TM |
7744 | static void nfs_fixup_referral_attributes(struct nfs_fattr *fattr) |
7745 | { | |
533eb461 AA |
7746 | if (!(((fattr->valid & NFS_ATTR_FATTR_MOUNTED_ON_FILEID) || |
7747 | (fattr->valid & NFS_ATTR_FATTR_FILEID)) && | |
7748 | (fattr->valid & NFS_ATTR_FATTR_FSID) && | |
81934ddb | 7749 | (fattr->valid & NFS_ATTR_FATTR_V4_LOCATIONS))) |
69aaaae1 TM |
7750 | return; |
7751 | ||
7752 | fattr->valid |= NFS_ATTR_FATTR_TYPE | NFS_ATTR_FATTR_MODE | | |
81934ddb | 7753 | NFS_ATTR_FATTR_NLINK | NFS_ATTR_FATTR_V4_REFERRAL; |
69aaaae1 TM |
7754 | fattr->mode = S_IFDIR | S_IRUGO | S_IXUGO; |
7755 | fattr->nlink = 2; | |
7756 | } | |
7757 | ||
f05d147f BS |
7758 | static int _nfs4_proc_fs_locations(struct rpc_clnt *client, struct inode *dir, |
7759 | const struct qstr *name, | |
7760 | struct nfs4_fs_locations *fs_locations, | |
7761 | struct page *page) | |
683b57b4 TM |
7762 | { |
7763 | struct nfs_server *server = NFS_SERVER(dir); | |
c05cefcc | 7764 | u32 bitmask[3]; |
683b57b4 TM |
7765 | struct nfs4_fs_locations_arg args = { |
7766 | .dir_fh = NFS_FH(dir), | |
c228fd3a | 7767 | .name = name, |
683b57b4 TM |
7768 | .page = page, |
7769 | .bitmask = bitmask, | |
7770 | }; | |
22958463 BH |
7771 | struct nfs4_fs_locations_res res = { |
7772 | .fs_locations = fs_locations, | |
7773 | }; | |
683b57b4 TM |
7774 | struct rpc_message msg = { |
7775 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FS_LOCATIONS], | |
7776 | .rpc_argp = &args, | |
22958463 | 7777 | .rpc_resp = &res, |
683b57b4 TM |
7778 | }; |
7779 | int status; | |
7780 | ||
3110ff80 | 7781 | dprintk("%s: start\n", __func__); |
533eb461 | 7782 | |
c05cefcc CL |
7783 | bitmask[0] = nfs4_fattr_bitmap[0] | FATTR4_WORD0_FS_LOCATIONS; |
7784 | bitmask[1] = nfs4_fattr_bitmap[1]; | |
7785 | ||
533eb461 AA |
7786 | /* Ask for the fileid of the absent filesystem if mounted_on_fileid |
7787 | * is not supported */ | |
7788 | if (NFS_SERVER(dir)->attr_bitmask[1] & FATTR4_WORD1_MOUNTED_ON_FILEID) | |
c05cefcc | 7789 | bitmask[0] &= ~FATTR4_WORD0_FILEID; |
533eb461 | 7790 | else |
c05cefcc | 7791 | bitmask[1] &= ~FATTR4_WORD1_MOUNTED_ON_FILEID; |
533eb461 | 7792 | |
c228fd3a | 7793 | nfs_fattr_init(&fs_locations->fattr); |
683b57b4 | 7794 | fs_locations->server = server; |
830b8e33 | 7795 | fs_locations->nlocations = 0; |
f05d147f | 7796 | status = nfs4_call_sync(client, server, &msg, &args.seq_args, &res.seq_res, 0); |
3110ff80 | 7797 | dprintk("%s: returned status = %d\n", __func__, status); |
683b57b4 TM |
7798 | return status; |
7799 | } | |
7800 | ||
f05d147f BS |
7801 | int nfs4_proc_fs_locations(struct rpc_clnt *client, struct inode *dir, |
7802 | const struct qstr *name, | |
7803 | struct nfs4_fs_locations *fs_locations, | |
7804 | struct page *page) | |
db0a9593 | 7805 | { |
0688e64b TM |
7806 | struct nfs4_exception exception = { |
7807 | .interruptible = true, | |
7808 | }; | |
db0a9593 BS |
7809 | int err; |
7810 | do { | |
078ea3df TM |
7811 | err = _nfs4_proc_fs_locations(client, dir, name, |
7812 | fs_locations, page); | |
7813 | trace_nfs4_get_fs_locations(dir, name, err); | |
7814 | err = nfs4_handle_exception(NFS_SERVER(dir), err, | |
db0a9593 BS |
7815 | &exception); |
7816 | } while (exception.retry); | |
7817 | return err; | |
7818 | } | |
7819 | ||
b03d735b CL |
7820 | /* |
7821 | * This operation also signals the server that this client is | |
7822 | * performing migration recovery. The server can stop returning | |
7823 | * NFS4ERR_LEASE_MOVED to this client. A RENEW operation is | |
7824 | * appended to this compound to identify the client ID which is | |
7825 | * performing recovery. | |
7826 | */ | |
7827 | static int _nfs40_proc_get_locations(struct inode *inode, | |
7828 | struct nfs4_fs_locations *locations, | |
a52458b4 | 7829 | struct page *page, const struct cred *cred) |
b03d735b CL |
7830 | { |
7831 | struct nfs_server *server = NFS_SERVER(inode); | |
7832 | struct rpc_clnt *clnt = server->client; | |
7833 | u32 bitmask[2] = { | |
7834 | [0] = FATTR4_WORD0_FSID | FATTR4_WORD0_FS_LOCATIONS, | |
7835 | }; | |
7836 | struct nfs4_fs_locations_arg args = { | |
7837 | .clientid = server->nfs_client->cl_clientid, | |
7838 | .fh = NFS_FH(inode), | |
7839 | .page = page, | |
7840 | .bitmask = bitmask, | |
7841 | .migration = 1, /* skip LOOKUP */ | |
7842 | .renew = 1, /* append RENEW */ | |
7843 | }; | |
7844 | struct nfs4_fs_locations_res res = { | |
7845 | .fs_locations = locations, | |
7846 | .migration = 1, | |
7847 | .renew = 1, | |
7848 | }; | |
7849 | struct rpc_message msg = { | |
7850 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FS_LOCATIONS], | |
7851 | .rpc_argp = &args, | |
7852 | .rpc_resp = &res, | |
7853 | .rpc_cred = cred, | |
7854 | }; | |
7855 | unsigned long now = jiffies; | |
7856 | int status; | |
7857 | ||
7858 | nfs_fattr_init(&locations->fattr); | |
7859 | locations->server = server; | |
7860 | locations->nlocations = 0; | |
7861 | ||
fba83f34 | 7862 | nfs4_init_sequence(&args.seq_args, &res.seq_res, 0, 1); |
b03d735b CL |
7863 | status = nfs4_call_sync_sequence(clnt, server, &msg, |
7864 | &args.seq_args, &res.seq_res); | |
7865 | if (status) | |
7866 | return status; | |
7867 | ||
7868 | renew_lease(server, now); | |
7869 | return 0; | |
7870 | } | |
7871 | ||
7872 | #ifdef CONFIG_NFS_V4_1 | |
7873 | ||
7874 | /* | |
7875 | * This operation also signals the server that this client is | |
7876 | * performing migration recovery. The server can stop asserting | |
7877 | * SEQ4_STATUS_LEASE_MOVED for this client. The client ID | |
7878 | * performing this operation is identified in the SEQUENCE | |
7879 | * operation in this compound. | |
7880 | * | |
7881 | * When the client supports GETATTR(fs_locations_info), it can | |
7882 | * be plumbed in here. | |
7883 | */ | |
7884 | static int _nfs41_proc_get_locations(struct inode *inode, | |
7885 | struct nfs4_fs_locations *locations, | |
a52458b4 | 7886 | struct page *page, const struct cred *cred) |
b03d735b CL |
7887 | { |
7888 | struct nfs_server *server = NFS_SERVER(inode); | |
7889 | struct rpc_clnt *clnt = server->client; | |
7890 | u32 bitmask[2] = { | |
7891 | [0] = FATTR4_WORD0_FSID | FATTR4_WORD0_FS_LOCATIONS, | |
7892 | }; | |
7893 | struct nfs4_fs_locations_arg args = { | |
7894 | .fh = NFS_FH(inode), | |
7895 | .page = page, | |
7896 | .bitmask = bitmask, | |
7897 | .migration = 1, /* skip LOOKUP */ | |
7898 | }; | |
7899 | struct nfs4_fs_locations_res res = { | |
7900 | .fs_locations = locations, | |
7901 | .migration = 1, | |
7902 | }; | |
7903 | struct rpc_message msg = { | |
7904 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FS_LOCATIONS], | |
7905 | .rpc_argp = &args, | |
7906 | .rpc_resp = &res, | |
7907 | .rpc_cred = cred, | |
7908 | }; | |
7909 | int status; | |
7910 | ||
7911 | nfs_fattr_init(&locations->fattr); | |
7912 | locations->server = server; | |
7913 | locations->nlocations = 0; | |
7914 | ||
fba83f34 | 7915 | nfs4_init_sequence(&args.seq_args, &res.seq_res, 0, 1); |
b03d735b CL |
7916 | status = nfs4_call_sync_sequence(clnt, server, &msg, |
7917 | &args.seq_args, &res.seq_res); | |
7918 | if (status == NFS4_OK && | |
7919 | res.seq_res.sr_status_flags & SEQ4_STATUS_LEASE_MOVED) | |
7920 | status = -NFS4ERR_LEASE_MOVED; | |
7921 | return status; | |
7922 | } | |
7923 | ||
7924 | #endif /* CONFIG_NFS_V4_1 */ | |
7925 | ||
7926 | /** | |
7927 | * nfs4_proc_get_locations - discover locations for a migrated FSID | |
7928 | * @inode: inode on FSID that is migrating | |
7929 | * @locations: result of query | |
7930 | * @page: buffer | |
7931 | * @cred: credential to use for this operation | |
7932 | * | |
7933 | * Returns NFS4_OK on success, a negative NFS4ERR status code if the | |
7934 | * operation failed, or a negative errno if a local error occurred. | |
7935 | * | |
7936 | * On success, "locations" is filled in, but if the server has | |
7937 | * no locations information, NFS_ATTR_FATTR_V4_LOCATIONS is not | |
7938 | * asserted. | |
7939 | * | |
7940 | * -NFS4ERR_LEASE_MOVED is returned if the server still has leases | |
7941 | * from this client that require migration recovery. | |
7942 | */ | |
7943 | int nfs4_proc_get_locations(struct inode *inode, | |
7944 | struct nfs4_fs_locations *locations, | |
a52458b4 | 7945 | struct page *page, const struct cred *cred) |
b03d735b CL |
7946 | { |
7947 | struct nfs_server *server = NFS_SERVER(inode); | |
7948 | struct nfs_client *clp = server->nfs_client; | |
7949 | const struct nfs4_mig_recovery_ops *ops = | |
7950 | clp->cl_mvops->mig_recovery_ops; | |
0688e64b TM |
7951 | struct nfs4_exception exception = { |
7952 | .interruptible = true, | |
7953 | }; | |
b03d735b CL |
7954 | int status; |
7955 | ||
7956 | dprintk("%s: FSID %llx:%llx on \"%s\"\n", __func__, | |
7957 | (unsigned long long)server->fsid.major, | |
7958 | (unsigned long long)server->fsid.minor, | |
7959 | clp->cl_hostname); | |
7960 | nfs_display_fhandle(NFS_FH(inode), __func__); | |
7961 | ||
7962 | do { | |
7963 | status = ops->get_locations(inode, locations, page, cred); | |
7964 | if (status != -NFS4ERR_DELAY) | |
7965 | break; | |
7966 | nfs4_handle_exception(server, status, &exception); | |
7967 | } while (exception.retry); | |
7968 | return status; | |
7969 | } | |
7970 | ||
44c99933 CL |
7971 | /* |
7972 | * This operation also signals the server that this client is | |
7973 | * performing "lease moved" recovery. The server can stop | |
7974 | * returning NFS4ERR_LEASE_MOVED to this client. A RENEW operation | |
7975 | * is appended to this compound to identify the client ID which is | |
7976 | * performing recovery. | |
7977 | */ | |
a52458b4 | 7978 | static int _nfs40_proc_fsid_present(struct inode *inode, const struct cred *cred) |
44c99933 CL |
7979 | { |
7980 | struct nfs_server *server = NFS_SERVER(inode); | |
7981 | struct nfs_client *clp = NFS_SERVER(inode)->nfs_client; | |
7982 | struct rpc_clnt *clnt = server->client; | |
7983 | struct nfs4_fsid_present_arg args = { | |
7984 | .fh = NFS_FH(inode), | |
7985 | .clientid = clp->cl_clientid, | |
7986 | .renew = 1, /* append RENEW */ | |
7987 | }; | |
7988 | struct nfs4_fsid_present_res res = { | |
7989 | .renew = 1, | |
7990 | }; | |
7991 | struct rpc_message msg = { | |
7992 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FSID_PRESENT], | |
7993 | .rpc_argp = &args, | |
7994 | .rpc_resp = &res, | |
7995 | .rpc_cred = cred, | |
7996 | }; | |
7997 | unsigned long now = jiffies; | |
7998 | int status; | |
7999 | ||
8000 | res.fh = nfs_alloc_fhandle(); | |
8001 | if (res.fh == NULL) | |
8002 | return -ENOMEM; | |
8003 | ||
fba83f34 | 8004 | nfs4_init_sequence(&args.seq_args, &res.seq_res, 0, 1); |
44c99933 CL |
8005 | status = nfs4_call_sync_sequence(clnt, server, &msg, |
8006 | &args.seq_args, &res.seq_res); | |
8007 | nfs_free_fhandle(res.fh); | |
8008 | if (status) | |
8009 | return status; | |
8010 | ||
8011 | do_renew_lease(clp, now); | |
8012 | return 0; | |
8013 | } | |
8014 | ||
8015 | #ifdef CONFIG_NFS_V4_1 | |
8016 | ||
8017 | /* | |
8018 | * This operation also signals the server that this client is | |
8019 | * performing "lease moved" recovery. The server can stop asserting | |
8020 | * SEQ4_STATUS_LEASE_MOVED for this client. The client ID performing | |
8021 | * this operation is identified in the SEQUENCE operation in this | |
8022 | * compound. | |
8023 | */ | |
a52458b4 | 8024 | static int _nfs41_proc_fsid_present(struct inode *inode, const struct cred *cred) |
44c99933 CL |
8025 | { |
8026 | struct nfs_server *server = NFS_SERVER(inode); | |
8027 | struct rpc_clnt *clnt = server->client; | |
8028 | struct nfs4_fsid_present_arg args = { | |
8029 | .fh = NFS_FH(inode), | |
8030 | }; | |
8031 | struct nfs4_fsid_present_res res = { | |
8032 | }; | |
8033 | struct rpc_message msg = { | |
8034 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FSID_PRESENT], | |
8035 | .rpc_argp = &args, | |
8036 | .rpc_resp = &res, | |
8037 | .rpc_cred = cred, | |
8038 | }; | |
8039 | int status; | |
8040 | ||
8041 | res.fh = nfs_alloc_fhandle(); | |
8042 | if (res.fh == NULL) | |
8043 | return -ENOMEM; | |
8044 | ||
fba83f34 | 8045 | nfs4_init_sequence(&args.seq_args, &res.seq_res, 0, 1); |
44c99933 CL |
8046 | status = nfs4_call_sync_sequence(clnt, server, &msg, |
8047 | &args.seq_args, &res.seq_res); | |
8048 | nfs_free_fhandle(res.fh); | |
8049 | if (status == NFS4_OK && | |
8050 | res.seq_res.sr_status_flags & SEQ4_STATUS_LEASE_MOVED) | |
8051 | status = -NFS4ERR_LEASE_MOVED; | |
8052 | return status; | |
8053 | } | |
8054 | ||
8055 | #endif /* CONFIG_NFS_V4_1 */ | |
8056 | ||
8057 | /** | |
8058 | * nfs4_proc_fsid_present - Is this FSID present or absent on server? | |
8059 | * @inode: inode on FSID to check | |
8060 | * @cred: credential to use for this operation | |
8061 | * | |
8062 | * Server indicates whether the FSID is present, moved, or not | |
8063 | * recognized. This operation is necessary to clear a LEASE_MOVED | |
8064 | * condition for this client ID. | |
8065 | * | |
8066 | * Returns NFS4_OK if the FSID is present on this server, | |
8067 | * -NFS4ERR_MOVED if the FSID is no longer present, a negative | |
8068 | * NFS4ERR code if some error occurred on the server, or a | |
8069 | * negative errno if a local failure occurred. | |
8070 | */ | |
a52458b4 | 8071 | int nfs4_proc_fsid_present(struct inode *inode, const struct cred *cred) |
44c99933 CL |
8072 | { |
8073 | struct nfs_server *server = NFS_SERVER(inode); | |
8074 | struct nfs_client *clp = server->nfs_client; | |
8075 | const struct nfs4_mig_recovery_ops *ops = | |
8076 | clp->cl_mvops->mig_recovery_ops; | |
0688e64b TM |
8077 | struct nfs4_exception exception = { |
8078 | .interruptible = true, | |
8079 | }; | |
44c99933 CL |
8080 | int status; |
8081 | ||
8082 | dprintk("%s: FSID %llx:%llx on \"%s\"\n", __func__, | |
8083 | (unsigned long long)server->fsid.major, | |
8084 | (unsigned long long)server->fsid.minor, | |
8085 | clp->cl_hostname); | |
8086 | nfs_display_fhandle(NFS_FH(inode), __func__); | |
8087 | ||
8088 | do { | |
8089 | status = ops->fsid_present(inode, cred); | |
8090 | if (status != -NFS4ERR_DELAY) | |
8091 | break; | |
8092 | nfs4_handle_exception(server, status, &exception); | |
8093 | } while (exception.retry); | |
8094 | return status; | |
8095 | } | |
8096 | ||
302fad7b | 8097 | /* |
a5250def WAA |
8098 | * If 'use_integrity' is true and the state managment nfs_client |
8099 | * cl_rpcclient is using krb5i/p, use the integrity protected cl_rpcclient | |
8100 | * and the machine credential as per RFC3530bis and RFC5661 Security | |
8101 | * Considerations sections. Otherwise, just use the user cred with the | |
8102 | * filesystem's rpc_client. | |
5ec16a85 | 8103 | */ |
a5250def | 8104 | static int _nfs4_proc_secinfo(struct inode *dir, const struct qstr *name, struct nfs4_secinfo_flavors *flavors, bool use_integrity) |
5a5ea0d4 BS |
8105 | { |
8106 | int status; | |
50493364 AS |
8107 | struct rpc_clnt *clnt = NFS_SERVER(dir)->client; |
8108 | struct nfs_client *clp = NFS_SERVER(dir)->nfs_client; | |
5a5ea0d4 BS |
8109 | struct nfs4_secinfo_arg args = { |
8110 | .dir_fh = NFS_FH(dir), | |
8111 | .name = name, | |
8112 | }; | |
8113 | struct nfs4_secinfo_res res = { | |
8114 | .flavors = flavors, | |
8115 | }; | |
8116 | struct rpc_message msg = { | |
8117 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SECINFO], | |
8118 | .rpc_argp = &args, | |
8119 | .rpc_resp = &res, | |
8120 | }; | |
50493364 AS |
8121 | struct nfs4_call_sync_data data = { |
8122 | .seq_server = NFS_SERVER(dir), | |
8123 | .seq_args = &args.seq_args, | |
8124 | .seq_res = &res.seq_res, | |
8125 | }; | |
8126 | struct rpc_task_setup task_setup = { | |
8127 | .rpc_client = clnt, | |
8128 | .rpc_message = &msg, | |
8129 | .callback_ops = clp->cl_mvops->call_sync_ops, | |
8130 | .callback_data = &data, | |
8131 | .flags = RPC_TASK_NO_ROUND_ROBIN, | |
8132 | }; | |
a52458b4 | 8133 | const struct cred *cred = NULL; |
a5250def WAA |
8134 | |
8135 | if (use_integrity) { | |
50493364 AS |
8136 | clnt = clp->cl_rpcclient; |
8137 | task_setup.rpc_client = clnt; | |
8138 | ||
8139 | cred = nfs4_get_clid_cred(clp); | |
7cb852df | 8140 | msg.rpc_cred = cred; |
a5250def | 8141 | } |
5a5ea0d4 BS |
8142 | |
8143 | dprintk("NFS call secinfo %s\n", name->name); | |
8b5bee2e | 8144 | |
50493364 AS |
8145 | nfs4_state_protect(clp, NFS_SP4_MACH_CRED_SECINFO, &clnt, &msg); |
8146 | nfs4_init_sequence(&args.seq_args, &res.seq_res, 0, 0); | |
8147 | status = nfs4_call_sync_custom(&task_setup); | |
8b5bee2e | 8148 | |
5a5ea0d4 | 8149 | dprintk("NFS reply secinfo: %d\n", status); |
a5250def | 8150 | |
a52458b4 | 8151 | put_cred(cred); |
5a5ea0d4 BS |
8152 | return status; |
8153 | } | |
8154 | ||
72de53ec BS |
8155 | int nfs4_proc_secinfo(struct inode *dir, const struct qstr *name, |
8156 | struct nfs4_secinfo_flavors *flavors) | |
5a5ea0d4 | 8157 | { |
0688e64b TM |
8158 | struct nfs4_exception exception = { |
8159 | .interruptible = true, | |
8160 | }; | |
5a5ea0d4 BS |
8161 | int err; |
8162 | do { | |
a5250def WAA |
8163 | err = -NFS4ERR_WRONGSEC; |
8164 | ||
8165 | /* try to use integrity protection with machine cred */ | |
8166 | if (_nfs4_is_integrity_protected(NFS_SERVER(dir)->nfs_client)) | |
8167 | err = _nfs4_proc_secinfo(dir, name, flavors, true); | |
8168 | ||
8169 | /* | |
8170 | * if unable to use integrity protection, or SECINFO with | |
8171 | * integrity protection returns NFS4ERR_WRONGSEC (which is | |
8172 | * disallowed by spec, but exists in deployed servers) use | |
8173 | * the current filesystem's rpc_client and the user cred. | |
8174 | */ | |
8175 | if (err == -NFS4ERR_WRONGSEC) | |
8176 | err = _nfs4_proc_secinfo(dir, name, flavors, false); | |
8177 | ||
078ea3df TM |
8178 | trace_nfs4_secinfo(dir, name, err); |
8179 | err = nfs4_handle_exception(NFS_SERVER(dir), err, | |
5a5ea0d4 BS |
8180 | &exception); |
8181 | } while (exception.retry); | |
8182 | return err; | |
8183 | } | |
8184 | ||
557134a3 | 8185 | #ifdef CONFIG_NFS_V4_1 |
357f54d6 AA |
8186 | /* |
8187 | * Check the exchange flags returned by the server for invalid flags, having | |
8188 | * both PNFS and NON_PNFS flags set, and not having one of NON_PNFS, PNFS, or | |
8189 | * DS flags set. | |
8190 | */ | |
8c39076c | 8191 | static int nfs4_check_cl_exchange_flags(u32 flags, u32 version) |
357f54d6 | 8192 | { |
8c39076c OK |
8193 | if (version >= 2 && (flags & ~EXCHGID4_2_FLAG_MASK_R)) |
8194 | goto out_inval; | |
8195 | else if (version < 2 && (flags & ~EXCHGID4_FLAG_MASK_R)) | |
357f54d6 AA |
8196 | goto out_inval; |
8197 | if ((flags & EXCHGID4_FLAG_USE_PNFS_MDS) && | |
8198 | (flags & EXCHGID4_FLAG_USE_NON_PNFS)) | |
8199 | goto out_inval; | |
8200 | if (!(flags & (EXCHGID4_FLAG_MASK_PNFS))) | |
8201 | goto out_inval; | |
8202 | return NFS_OK; | |
8203 | out_inval: | |
8204 | return -NFS4ERR_INVAL; | |
8205 | } | |
8206 | ||
78fe0f41 | 8207 | static bool |
79d4e1f0 CL |
8208 | nfs41_same_server_scope(struct nfs41_server_scope *a, |
8209 | struct nfs41_server_scope *b) | |
78fe0f41 | 8210 | { |
49ad0145 AS |
8211 | if (a->server_scope_sz != b->server_scope_sz) |
8212 | return false; | |
8213 | return memcmp(a->server_scope, b->server_scope, a->server_scope_sz) == 0; | |
78fe0f41 WAA |
8214 | } |
8215 | ||
02a95dee AA |
8216 | static void |
8217 | nfs4_bind_one_conn_to_session_done(struct rpc_task *task, void *calldata) | |
8218 | { | |
5c441544 | 8219 | struct nfs41_bind_conn_to_session_args *args = task->tk_msg.rpc_argp; |
dff58530 | 8220 | struct nfs41_bind_conn_to_session_res *res = task->tk_msg.rpc_resp; |
5c441544 TM |
8221 | struct nfs_client *clp = args->client; |
8222 | ||
8223 | switch (task->tk_status) { | |
8224 | case -NFS4ERR_BADSESSION: | |
8225 | case -NFS4ERR_DEADSESSION: | |
8226 | nfs4_schedule_session_recovery(clp->cl_session, | |
8227 | task->tk_status); | |
8228 | } | |
dff58530 OK |
8229 | if (args->dir == NFS4_CDFC4_FORE_OR_BOTH && |
8230 | res->dir != NFS4_CDFS4_BOTH) { | |
8231 | rpc_task_close_connection(task); | |
8232 | if (args->retries++ < MAX_BIND_CONN_TO_SESSION_RETRIES) | |
8233 | rpc_restart_call(task); | |
8234 | } | |
02a95dee AA |
8235 | } |
8236 | ||
8237 | static const struct rpc_call_ops nfs4_bind_one_conn_to_session_ops = { | |
1c709b76 | 8238 | .rpc_call_done = nfs4_bind_one_conn_to_session_done, |
02a95dee AA |
8239 | }; |
8240 | ||
7c44f1ae | 8241 | /* |
d9ddbf5d | 8242 | * nfs4_proc_bind_one_conn_to_session() |
7c44f1ae WAA |
8243 | * |
8244 | * The 4.1 client currently uses the same TCP connection for the | |
8245 | * fore and backchannel. | |
8246 | */ | |
d9ddbf5d TM |
8247 | static |
8248 | int nfs4_proc_bind_one_conn_to_session(struct rpc_clnt *clnt, | |
8249 | struct rpc_xprt *xprt, | |
8250 | struct nfs_client *clp, | |
a52458b4 | 8251 | const struct cred *cred) |
7c44f1ae WAA |
8252 | { |
8253 | int status; | |
71a097c6 TM |
8254 | struct nfs41_bind_conn_to_session_args args = { |
8255 | .client = clp, | |
8256 | .dir = NFS4_CDFC4_FORE_OR_BOTH, | |
dff58530 | 8257 | .retries = 0, |
71a097c6 | 8258 | }; |
7c44f1ae WAA |
8259 | struct nfs41_bind_conn_to_session_res res; |
8260 | struct rpc_message msg = { | |
8261 | .rpc_proc = | |
8262 | &nfs4_procedures[NFSPROC4_CLNT_BIND_CONN_TO_SESSION], | |
71a097c6 | 8263 | .rpc_argp = &args, |
7c44f1ae | 8264 | .rpc_resp = &res, |
2cf047c9 | 8265 | .rpc_cred = cred, |
7c44f1ae | 8266 | }; |
d9ddbf5d TM |
8267 | struct rpc_task_setup task_setup_data = { |
8268 | .rpc_client = clnt, | |
8269 | .rpc_xprt = xprt, | |
02a95dee | 8270 | .callback_ops = &nfs4_bind_one_conn_to_session_ops, |
d9ddbf5d TM |
8271 | .rpc_message = &msg, |
8272 | .flags = RPC_TASK_TIMEOUT, | |
8273 | }; | |
8274 | struct rpc_task *task; | |
7c44f1ae | 8275 | |
71a097c6 TM |
8276 | nfs4_copy_sessionid(&args.sessionid, &clp->cl_session->sess_id); |
8277 | if (!(clp->cl_session->flags & SESSION4_BACK_CHAN)) | |
8278 | args.dir = NFS4_CDFC4_FORE; | |
7c44f1ae | 8279 | |
d9ddbf5d TM |
8280 | /* Do not set the backchannel flag unless this is clnt->cl_xprt */ |
8281 | if (xprt != rcu_access_pointer(clnt->cl_xprt)) | |
8282 | args.dir = NFS4_CDFC4_FORE; | |
8283 | ||
8284 | task = rpc_run_task(&task_setup_data); | |
8285 | if (!IS_ERR(task)) { | |
8286 | status = task->tk_status; | |
8287 | rpc_put_task(task); | |
8288 | } else | |
8289 | status = PTR_ERR(task); | |
c6d01c6f | 8290 | trace_nfs4_bind_conn_to_session(clp, status); |
7c44f1ae | 8291 | if (status == 0) { |
71a097c6 | 8292 | if (memcmp(res.sessionid.data, |
7c44f1ae WAA |
8293 | clp->cl_session->sess_id.data, NFS4_MAX_SESSIONID_LEN)) { |
8294 | dprintk("NFS: %s: Session ID mismatch\n", __func__); | |
c7ae7639 | 8295 | return -EIO; |
7c44f1ae | 8296 | } |
71a097c6 | 8297 | if ((res.dir & args.dir) != res.dir || res.dir == 0) { |
7c44f1ae WAA |
8298 | dprintk("NFS: %s: Unexpected direction from server\n", |
8299 | __func__); | |
c7ae7639 | 8300 | return -EIO; |
7c44f1ae | 8301 | } |
71a097c6 | 8302 | if (res.use_conn_in_rdma_mode != args.use_conn_in_rdma_mode) { |
7c44f1ae WAA |
8303 | dprintk("NFS: %s: Server returned RDMA mode = true\n", |
8304 | __func__); | |
c7ae7639 | 8305 | return -EIO; |
7c44f1ae WAA |
8306 | } |
8307 | } | |
c7ae7639 | 8308 | |
7c44f1ae WAA |
8309 | return status; |
8310 | } | |
8311 | ||
d9ddbf5d TM |
8312 | struct rpc_bind_conn_calldata { |
8313 | struct nfs_client *clp; | |
a52458b4 | 8314 | const struct cred *cred; |
d9ddbf5d TM |
8315 | }; |
8316 | ||
8317 | static int | |
8318 | nfs4_proc_bind_conn_to_session_callback(struct rpc_clnt *clnt, | |
8319 | struct rpc_xprt *xprt, | |
8320 | void *calldata) | |
8321 | { | |
8322 | struct rpc_bind_conn_calldata *p = calldata; | |
8323 | ||
8324 | return nfs4_proc_bind_one_conn_to_session(clnt, xprt, p->clp, p->cred); | |
8325 | } | |
8326 | ||
a52458b4 | 8327 | int nfs4_proc_bind_conn_to_session(struct nfs_client *clp, const struct cred *cred) |
d9ddbf5d TM |
8328 | { |
8329 | struct rpc_bind_conn_calldata data = { | |
8330 | .clp = clp, | |
8331 | .cred = cred, | |
8332 | }; | |
8333 | return rpc_clnt_iterate_for_each_xprt(clp->cl_rpcclient, | |
8334 | nfs4_proc_bind_conn_to_session_callback, &data); | |
8335 | } | |
8336 | ||
99fe60d0 | 8337 | /* |
fa940720 WAA |
8338 | * Minimum set of SP4_MACH_CRED operations from RFC 5661 in the enforce map |
8339 | * and operations we'd like to see to enable certain features in the allow map | |
2031cd1a WAA |
8340 | */ |
8341 | static const struct nfs41_state_protection nfs4_sp4_mach_cred_request = { | |
8342 | .how = SP4_MACH_CRED, | |
8343 | .enforce.u.words = { | |
8344 | [1] = 1 << (OP_BIND_CONN_TO_SESSION - 32) | | |
8345 | 1 << (OP_EXCHANGE_ID - 32) | | |
8346 | 1 << (OP_CREATE_SESSION - 32) | | |
8347 | 1 << (OP_DESTROY_SESSION - 32) | | |
8348 | 1 << (OP_DESTROY_CLIENTID - 32) | |
fa940720 WAA |
8349 | }, |
8350 | .allow.u.words = { | |
8351 | [0] = 1 << (OP_CLOSE) | | |
99ade3c7 | 8352 | 1 << (OP_OPEN_DOWNGRADE) | |
a0279625 | 8353 | 1 << (OP_LOCKU) | |
99ade3c7 | 8354 | 1 << (OP_DELEGRETURN) | |
a0279625 | 8355 | 1 << (OP_COMMIT), |
8b5bee2e | 8356 | [1] = 1 << (OP_SECINFO - 32) | |
3787d506 | 8357 | 1 << (OP_SECINFO_NO_NAME - 32) | |
99ade3c7 | 8358 | 1 << (OP_LAYOUTRETURN - 32) | |
3787d506 | 8359 | 1 << (OP_TEST_STATEID - 32) | |
a0279625 WAA |
8360 | 1 << (OP_FREE_STATEID - 32) | |
8361 | 1 << (OP_WRITE - 32) | |
2031cd1a WAA |
8362 | } |
8363 | }; | |
8364 | ||
8365 | /* | |
8366 | * Select the state protection mode for client `clp' given the server results | |
8367 | * from exchange_id in `sp'. | |
99fe60d0 | 8368 | * |
2031cd1a WAA |
8369 | * Returns 0 on success, negative errno otherwise. |
8370 | */ | |
8371 | static int nfs4_sp4_select_mode(struct nfs_client *clp, | |
8372 | struct nfs41_state_protection *sp) | |
8373 | { | |
8374 | static const u32 supported_enforce[NFS4_OP_MAP_NUM_WORDS] = { | |
8375 | [1] = 1 << (OP_BIND_CONN_TO_SESSION - 32) | | |
8376 | 1 << (OP_EXCHANGE_ID - 32) | | |
8377 | 1 << (OP_CREATE_SESSION - 32) | | |
8378 | 1 << (OP_DESTROY_SESSION - 32) | | |
8379 | 1 << (OP_DESTROY_CLIENTID - 32) | |
8380 | }; | |
937e3133 | 8381 | unsigned long flags = 0; |
2031cd1a | 8382 | unsigned int i; |
937e3133 | 8383 | int ret = 0; |
2031cd1a WAA |
8384 | |
8385 | if (sp->how == SP4_MACH_CRED) { | |
8386 | /* Print state protect result */ | |
8387 | dfprintk(MOUNT, "Server SP4_MACH_CRED support:\n"); | |
8388 | for (i = 0; i <= LAST_NFS4_OP; i++) { | |
8389 | if (test_bit(i, sp->enforce.u.longs)) | |
8390 | dfprintk(MOUNT, " enforce op %d\n", i); | |
8391 | if (test_bit(i, sp->allow.u.longs)) | |
8392 | dfprintk(MOUNT, " allow op %d\n", i); | |
8393 | } | |
8394 | ||
8395 | /* make sure nothing is on enforce list that isn't supported */ | |
8396 | for (i = 0; i < NFS4_OP_MAP_NUM_WORDS; i++) { | |
8397 | if (sp->enforce.u.words[i] & ~supported_enforce[i]) { | |
8398 | dfprintk(MOUNT, "sp4_mach_cred: disabled\n"); | |
937e3133 TM |
8399 | ret = -EINVAL; |
8400 | goto out; | |
2031cd1a WAA |
8401 | } |
8402 | } | |
8403 | ||
8404 | /* | |
8405 | * Minimal mode - state operations are allowed to use machine | |
8406 | * credential. Note this already happens by default, so the | |
8407 | * client doesn't have to do anything more than the negotiation. | |
8408 | * | |
8409 | * NOTE: we don't care if EXCHANGE_ID is in the list - | |
8410 | * we're already using the machine cred for exchange_id | |
8411 | * and will never use a different cred. | |
8412 | */ | |
8413 | if (test_bit(OP_BIND_CONN_TO_SESSION, sp->enforce.u.longs) && | |
8414 | test_bit(OP_CREATE_SESSION, sp->enforce.u.longs) && | |
8415 | test_bit(OP_DESTROY_SESSION, sp->enforce.u.longs) && | |
8416 | test_bit(OP_DESTROY_CLIENTID, sp->enforce.u.longs)) { | |
8417 | dfprintk(MOUNT, "sp4_mach_cred:\n"); | |
8418 | dfprintk(MOUNT, " minimal mode enabled\n"); | |
937e3133 | 8419 | __set_bit(NFS_SP4_MACH_CRED_MINIMAL, &flags); |
2031cd1a WAA |
8420 | } else { |
8421 | dfprintk(MOUNT, "sp4_mach_cred: disabled\n"); | |
937e3133 TM |
8422 | ret = -EINVAL; |
8423 | goto out; | |
2031cd1a | 8424 | } |
fa940720 WAA |
8425 | |
8426 | if (test_bit(OP_CLOSE, sp->allow.u.longs) && | |
99ade3c7 AE |
8427 | test_bit(OP_OPEN_DOWNGRADE, sp->allow.u.longs) && |
8428 | test_bit(OP_DELEGRETURN, sp->allow.u.longs) && | |
fa940720 WAA |
8429 | test_bit(OP_LOCKU, sp->allow.u.longs)) { |
8430 | dfprintk(MOUNT, " cleanup mode enabled\n"); | |
937e3133 | 8431 | __set_bit(NFS_SP4_MACH_CRED_CLEANUP, &flags); |
fa940720 | 8432 | } |
8b5bee2e | 8433 | |
99ade3c7 AE |
8434 | if (test_bit(OP_LAYOUTRETURN, sp->allow.u.longs)) { |
8435 | dfprintk(MOUNT, " pnfs cleanup mode enabled\n"); | |
937e3133 | 8436 | __set_bit(NFS_SP4_MACH_CRED_PNFS_CLEANUP, &flags); |
99ade3c7 AE |
8437 | } |
8438 | ||
8b5bee2e WAA |
8439 | if (test_bit(OP_SECINFO, sp->allow.u.longs) && |
8440 | test_bit(OP_SECINFO_NO_NAME, sp->allow.u.longs)) { | |
8441 | dfprintk(MOUNT, " secinfo mode enabled\n"); | |
937e3133 | 8442 | __set_bit(NFS_SP4_MACH_CRED_SECINFO, &flags); |
8b5bee2e | 8443 | } |
3787d506 WAA |
8444 | |
8445 | if (test_bit(OP_TEST_STATEID, sp->allow.u.longs) && | |
8446 | test_bit(OP_FREE_STATEID, sp->allow.u.longs)) { | |
8447 | dfprintk(MOUNT, " stateid mode enabled\n"); | |
937e3133 | 8448 | __set_bit(NFS_SP4_MACH_CRED_STATEID, &flags); |
3787d506 | 8449 | } |
8c21c62c WAA |
8450 | |
8451 | if (test_bit(OP_WRITE, sp->allow.u.longs)) { | |
8452 | dfprintk(MOUNT, " write mode enabled\n"); | |
937e3133 | 8453 | __set_bit(NFS_SP4_MACH_CRED_WRITE, &flags); |
8c21c62c WAA |
8454 | } |
8455 | ||
8456 | if (test_bit(OP_COMMIT, sp->allow.u.longs)) { | |
8457 | dfprintk(MOUNT, " commit mode enabled\n"); | |
937e3133 | 8458 | __set_bit(NFS_SP4_MACH_CRED_COMMIT, &flags); |
8c21c62c | 8459 | } |
2031cd1a | 8460 | } |
937e3133 TM |
8461 | out: |
8462 | clp->cl_sp4_flags = flags; | |
72bf75cf | 8463 | return ret; |
2031cd1a WAA |
8464 | } |
8465 | ||
8d89bd70 AA |
8466 | struct nfs41_exchange_id_data { |
8467 | struct nfs41_exchange_id_res res; | |
8468 | struct nfs41_exchange_id_args args; | |
8d89bd70 AA |
8469 | }; |
8470 | ||
8d89bd70 AA |
8471 | static void nfs4_exchange_id_release(void *data) |
8472 | { | |
8473 | struct nfs41_exchange_id_data *cdata = | |
8474 | (struct nfs41_exchange_id_data *)data; | |
8475 | ||
63513232 | 8476 | nfs_put_client(cdata->args.client); |
8d89bd70 AA |
8477 | kfree(cdata->res.impl_id); |
8478 | kfree(cdata->res.server_scope); | |
8479 | kfree(cdata->res.server_owner); | |
8480 | kfree(cdata); | |
8481 | } | |
8482 | ||
8483 | static const struct rpc_call_ops nfs4_exchange_id_call_ops = { | |
8d89bd70 AA |
8484 | .rpc_release = nfs4_exchange_id_release, |
8485 | }; | |
8486 | ||
2031cd1a WAA |
8487 | /* |
8488 | * _nfs4_proc_exchange_id() | |
6bbb4ae8 | 8489 | * |
2031cd1a | 8490 | * Wrapper for EXCHANGE_ID operation. |
99fe60d0 | 8491 | */ |
9c760d1f | 8492 | static struct rpc_task * |
a52458b4 | 8493 | nfs4_run_exchange_id(struct nfs_client *clp, const struct cred *cred, |
ad0849a7 | 8494 | u32 sp4_how, struct rpc_xprt *xprt) |
99fe60d0 | 8495 | { |
99fe60d0 BH |
8496 | struct rpc_message msg = { |
8497 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_EXCHANGE_ID], | |
99fe60d0 BH |
8498 | .rpc_cred = cred, |
8499 | }; | |
8d89bd70 AA |
8500 | struct rpc_task_setup task_setup_data = { |
8501 | .rpc_client = clp->cl_rpcclient, | |
8502 | .callback_ops = &nfs4_exchange_id_call_ops, | |
8503 | .rpc_message = &msg, | |
5a0c257f | 8504 | .flags = RPC_TASK_TIMEOUT | RPC_TASK_NO_ROUND_ROBIN, |
8d89bd70 AA |
8505 | }; |
8506 | struct nfs41_exchange_id_data *calldata; | |
e917f0d1 | 8507 | int status; |
8d89bd70 | 8508 | |
212bf41d | 8509 | if (!refcount_inc_not_zero(&clp->cl_count)) |
9c760d1f | 8510 | return ERR_PTR(-EIO); |
8d89bd70 | 8511 | |
9c760d1f | 8512 | status = -ENOMEM; |
8d89bd70 | 8513 | calldata = kzalloc(sizeof(*calldata), GFP_NOFS); |
9c760d1f TM |
8514 | if (!calldata) |
8515 | goto out; | |
99fe60d0 | 8516 | |
fd40559c | 8517 | nfs4_init_boot_verifier(clp, &calldata->args.verifier); |
873e3851 JL |
8518 | |
8519 | status = nfs4_init_uniform_client_string(clp); | |
8520 | if (status) | |
8d89bd70 | 8521 | goto out_calldata; |
3a6bb738 | 8522 | |
8d89bd70 AA |
8523 | calldata->res.server_owner = kzalloc(sizeof(struct nfs41_server_owner), |
8524 | GFP_NOFS); | |
8525 | status = -ENOMEM; | |
8526 | if (unlikely(calldata->res.server_owner == NULL)) | |
8527 | goto out_calldata; | |
78fe0f41 | 8528 | |
8d89bd70 | 8529 | calldata->res.server_scope = kzalloc(sizeof(struct nfs41_server_scope), |
bbafffd2 | 8530 | GFP_NOFS); |
8d89bd70 | 8531 | if (unlikely(calldata->res.server_scope == NULL)) |
acdeb69d | 8532 | goto out_server_owner; |
78fe0f41 | 8533 | |
8d89bd70 AA |
8534 | calldata->res.impl_id = kzalloc(sizeof(struct nfs41_impl_id), GFP_NOFS); |
8535 | if (unlikely(calldata->res.impl_id == NULL)) | |
7d2ed9ac | 8536 | goto out_server_scope; |
7d2ed9ac | 8537 | |
2031cd1a WAA |
8538 | switch (sp4_how) { |
8539 | case SP4_NONE: | |
8d89bd70 | 8540 | calldata->args.state_protect.how = SP4_NONE; |
2031cd1a WAA |
8541 | break; |
8542 | ||
8543 | case SP4_MACH_CRED: | |
8d89bd70 | 8544 | calldata->args.state_protect = nfs4_sp4_mach_cred_request; |
2031cd1a WAA |
8545 | break; |
8546 | ||
8547 | default: | |
8548 | /* unsupported! */ | |
8549 | WARN_ON_ONCE(1); | |
8550 | status = -EINVAL; | |
6b55970b | 8551 | goto out_impl_id; |
2031cd1a | 8552 | } |
ad0849a7 | 8553 | if (xprt) { |
ad0849a7 | 8554 | task_setup_data.rpc_xprt = xprt; |
d9cb7330 | 8555 | task_setup_data.flags |= RPC_TASK_SOFTCONN; |
fd40559c TM |
8556 | memcpy(calldata->args.verifier.data, clp->cl_confirm.data, |
8557 | sizeof(calldata->args.verifier.data)); | |
ad0849a7 | 8558 | } |
8d89bd70 | 8559 | calldata->args.client = clp; |
8d89bd70 | 8560 | calldata->args.flags = EXCHGID4_FLAG_SUPP_MOVED_REFER | |
bfab2817 TM |
8561 | EXCHGID4_FLAG_BIND_PRINC_STATEID; |
8562 | #ifdef CONFIG_NFS_V4_1_MIGRATION | |
8563 | calldata->args.flags |= EXCHGID4_FLAG_SUPP_MOVED_MIGR; | |
8d89bd70 AA |
8564 | #endif |
8565 | msg.rpc_argp = &calldata->args; | |
8566 | msg.rpc_resp = &calldata->res; | |
8567 | task_setup_data.callback_data = calldata; | |
2031cd1a | 8568 | |
9c760d1f | 8569 | return rpc_run_task(&task_setup_data); |
8d89bd70 AA |
8570 | |
8571 | out_impl_id: | |
8572 | kfree(calldata->res.impl_id); | |
8573 | out_server_scope: | |
8574 | kfree(calldata->res.server_scope); | |
8575 | out_server_owner: | |
8576 | kfree(calldata->res.server_owner); | |
8577 | out_calldata: | |
8578 | kfree(calldata); | |
9c760d1f | 8579 | out: |
63513232 | 8580 | nfs_put_client(clp); |
9c760d1f TM |
8581 | return ERR_PTR(status); |
8582 | } | |
8583 | ||
8584 | /* | |
8585 | * _nfs4_proc_exchange_id() | |
8586 | * | |
8587 | * Wrapper for EXCHANGE_ID operation. | |
8588 | */ | |
a52458b4 | 8589 | static int _nfs4_proc_exchange_id(struct nfs_client *clp, const struct cred *cred, |
9c760d1f TM |
8590 | u32 sp4_how) |
8591 | { | |
8592 | struct rpc_task *task; | |
8593 | struct nfs41_exchange_id_args *argp; | |
8594 | struct nfs41_exchange_id_res *resp; | |
7dc2993a | 8595 | unsigned long now = jiffies; |
9c760d1f TM |
8596 | int status; |
8597 | ||
8598 | task = nfs4_run_exchange_id(clp, cred, sp4_how, NULL); | |
8599 | if (IS_ERR(task)) | |
8600 | return PTR_ERR(task); | |
8601 | ||
8602 | argp = task->tk_msg.rpc_argp; | |
8603 | resp = task->tk_msg.rpc_resp; | |
8604 | status = task->tk_status; | |
8605 | if (status != 0) | |
8606 | goto out; | |
8607 | ||
8c39076c OK |
8608 | status = nfs4_check_cl_exchange_flags(resp->flags, |
8609 | clp->cl_mvops->minor_version); | |
9c760d1f TM |
8610 | if (status != 0) |
8611 | goto out; | |
8612 | ||
8613 | status = nfs4_sp4_select_mode(clp, &resp->state_protect); | |
8614 | if (status != 0) | |
8615 | goto out; | |
8616 | ||
7dc2993a RM |
8617 | do_renew_lease(clp, now); |
8618 | ||
9c760d1f TM |
8619 | clp->cl_clientid = resp->clientid; |
8620 | clp->cl_exchange_flags = resp->flags; | |
8621 | clp->cl_seqid = resp->seqid; | |
8622 | /* Client ID is not confirmed */ | |
8623 | if (!(resp->flags & EXCHGID4_FLAG_CONFIRMED_R)) | |
8624 | clear_bit(NFS4_SESSION_ESTABLISHED, | |
8625 | &clp->cl_session->session_state); | |
8626 | ||
8627 | if (clp->cl_serverscope != NULL && | |
8628 | !nfs41_same_server_scope(clp->cl_serverscope, | |
8629 | resp->server_scope)) { | |
8630 | dprintk("%s: server_scope mismatch detected\n", | |
8631 | __func__); | |
8632 | set_bit(NFS4CLNT_SERVER_SCOPE_MISMATCH, &clp->cl_state); | |
8633 | } | |
8634 | ||
8635 | swap(clp->cl_serverowner, resp->server_owner); | |
8636 | swap(clp->cl_serverscope, resp->server_scope); | |
8637 | swap(clp->cl_implid, resp->impl_id); | |
8638 | ||
8639 | /* Save the EXCHANGE_ID verifier session trunk tests */ | |
8640 | memcpy(clp->cl_confirm.data, argp->verifier.data, | |
8641 | sizeof(clp->cl_confirm.data)); | |
8642 | out: | |
8643 | trace_nfs4_exchange_id(clp, status); | |
8644 | rpc_put_task(task); | |
8645 | return status; | |
99fe60d0 BH |
8646 | } |
8647 | ||
2031cd1a WAA |
8648 | /* |
8649 | * nfs4_proc_exchange_id() | |
8650 | * | |
8651 | * Returns zero, a negative errno, or a negative NFS4ERR status code. | |
8652 | * | |
8653 | * Since the clientid has expired, all compounds using sessions | |
8654 | * associated with the stale clientid will be returning | |
8655 | * NFS4ERR_BADSESSION in the sequence operation, and will therefore | |
8656 | * be in some phase of session reset. | |
8657 | * | |
8658 | * Will attempt to negotiate SP4_MACH_CRED if krb5i / krb5p auth is used. | |
8659 | */ | |
a52458b4 | 8660 | int nfs4_proc_exchange_id(struct nfs_client *clp, const struct cred *cred) |
2031cd1a WAA |
8661 | { |
8662 | rpc_authflavor_t authflavor = clp->cl_rpcclient->cl_auth->au_flavor; | |
8663 | int status; | |
8664 | ||
8665 | /* try SP4_MACH_CRED if krb5i/p */ | |
8666 | if (authflavor == RPC_AUTH_GSS_KRB5I || | |
8667 | authflavor == RPC_AUTH_GSS_KRB5P) { | |
9c760d1f | 8668 | status = _nfs4_proc_exchange_id(clp, cred, SP4_MACH_CRED); |
2031cd1a WAA |
8669 | if (!status) |
8670 | return 0; | |
8671 | } | |
8672 | ||
8673 | /* try SP4_NONE */ | |
9c760d1f | 8674 | return _nfs4_proc_exchange_id(clp, cred, SP4_NONE); |
2031cd1a WAA |
8675 | } |
8676 | ||
04fa2c6b AA |
8677 | /** |
8678 | * nfs4_test_session_trunk | |
8679 | * | |
8680 | * This is an add_xprt_test() test function called from | |
8681 | * rpc_clnt_setup_test_and_add_xprt. | |
8682 | * | |
8683 | * The rpc_xprt_switch is referrenced by rpc_clnt_setup_test_and_add_xprt | |
8684 | * and is dereferrenced in nfs4_exchange_id_release | |
8685 | * | |
8686 | * Upon success, add the new transport to the rpc_clnt | |
8687 | * | |
8688 | * @clnt: struct rpc_clnt to get new transport | |
8689 | * @xprt: the rpc_xprt to test | |
8690 | * @data: call data for _nfs4_proc_exchange_id. | |
8691 | */ | |
10e037d1 | 8692 | void nfs4_test_session_trunk(struct rpc_clnt *clnt, struct rpc_xprt *xprt, |
04fa2c6b AA |
8693 | void *data) |
8694 | { | |
8695 | struct nfs4_add_xprt_data *adata = (struct nfs4_add_xprt_data *)data; | |
9c760d1f TM |
8696 | struct rpc_task *task; |
8697 | int status; | |
8698 | ||
04fa2c6b AA |
8699 | u32 sp4_how; |
8700 | ||
8701 | dprintk("--> %s try %s\n", __func__, | |
8702 | xprt->address_strings[RPC_DISPLAY_ADDR]); | |
8703 | ||
8704 | sp4_how = (adata->clp->cl_sp4_flags == 0 ? SP4_NONE : SP4_MACH_CRED); | |
8705 | ||
8706 | /* Test connection for session trunking. Async exchange_id call */ | |
9c760d1f TM |
8707 | task = nfs4_run_exchange_id(adata->clp, adata->cred, sp4_how, xprt); |
8708 | if (IS_ERR(task)) | |
10e037d1 | 8709 | return; |
9c760d1f TM |
8710 | |
8711 | status = task->tk_status; | |
8712 | if (status == 0) | |
8713 | status = nfs4_detect_session_trunking(adata->clp, | |
8714 | task->tk_msg.rpc_resp, xprt); | |
8715 | ||
10e037d1 S |
8716 | if (status == 0) |
8717 | rpc_clnt_xprt_switch_add_xprt(clnt, xprt); | |
8718 | ||
9c760d1f | 8719 | rpc_put_task(task); |
2031cd1a | 8720 | } |
04fa2c6b | 8721 | EXPORT_SYMBOL_GPL(nfs4_test_session_trunk); |
2031cd1a | 8722 | |
66245539 | 8723 | static int _nfs4_proc_destroy_clientid(struct nfs_client *clp, |
a52458b4 | 8724 | const struct cred *cred) |
66245539 TM |
8725 | { |
8726 | struct rpc_message msg = { | |
8727 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DESTROY_CLIENTID], | |
8728 | .rpc_argp = clp, | |
8729 | .rpc_cred = cred, | |
8730 | }; | |
8731 | int status; | |
8732 | ||
5a0c257f N |
8733 | status = rpc_call_sync(clp->cl_rpcclient, &msg, |
8734 | RPC_TASK_TIMEOUT | RPC_TASK_NO_ROUND_ROBIN); | |
c6d01c6f | 8735 | trace_nfs4_destroy_clientid(clp, status); |
66245539 | 8736 | if (status) |
02c67525 | 8737 | dprintk("NFS: Got error %d from the server %s on " |
66245539 TM |
8738 | "DESTROY_CLIENTID.", status, clp->cl_hostname); |
8739 | return status; | |
8740 | } | |
8741 | ||
8742 | static int nfs4_proc_destroy_clientid(struct nfs_client *clp, | |
a52458b4 | 8743 | const struct cred *cred) |
66245539 TM |
8744 | { |
8745 | unsigned int loop; | |
8746 | int ret; | |
8747 | ||
8748 | for (loop = NFS4_MAX_LOOP_ON_RECOVER; loop != 0; loop--) { | |
8749 | ret = _nfs4_proc_destroy_clientid(clp, cred); | |
8750 | switch (ret) { | |
8751 | case -NFS4ERR_DELAY: | |
8752 | case -NFS4ERR_CLIENTID_BUSY: | |
8753 | ssleep(1); | |
8754 | break; | |
8755 | default: | |
8756 | return ret; | |
8757 | } | |
8758 | } | |
8759 | return 0; | |
8760 | } | |
8761 | ||
8762 | int nfs4_destroy_clientid(struct nfs_client *clp) | |
8763 | { | |
a52458b4 | 8764 | const struct cred *cred; |
66245539 TM |
8765 | int ret = 0; |
8766 | ||
8767 | if (clp->cl_mvops->minor_version < 1) | |
8768 | goto out; | |
8769 | if (clp->cl_exchange_flags == 0) | |
8770 | goto out; | |
05f4c350 CL |
8771 | if (clp->cl_preserve_clid) |
8772 | goto out; | |
73d8bde5 | 8773 | cred = nfs4_get_clid_cred(clp); |
66245539 | 8774 | ret = nfs4_proc_destroy_clientid(clp, cred); |
a52458b4 | 8775 | put_cred(cred); |
66245539 TM |
8776 | switch (ret) { |
8777 | case 0: | |
8778 | case -NFS4ERR_STALE_CLIENTID: | |
8779 | clp->cl_exchange_flags = 0; | |
8780 | } | |
8781 | out: | |
8782 | return ret; | |
8783 | } | |
8784 | ||
0efb01b2 DB |
8785 | #endif /* CONFIG_NFS_V4_1 */ |
8786 | ||
2050f0cc AA |
8787 | struct nfs4_get_lease_time_data { |
8788 | struct nfs4_get_lease_time_args *args; | |
8789 | struct nfs4_get_lease_time_res *res; | |
8790 | struct nfs_client *clp; | |
8791 | }; | |
8792 | ||
8793 | static void nfs4_get_lease_time_prepare(struct rpc_task *task, | |
8794 | void *calldata) | |
8795 | { | |
2050f0cc AA |
8796 | struct nfs4_get_lease_time_data *data = |
8797 | (struct nfs4_get_lease_time_data *)calldata; | |
8798 | ||
8799 | dprintk("--> %s\n", __func__); | |
8800 | /* just setup sequence, do not trigger session recovery | |
8801 | since we're invoked within one */ | |
7981c8a6 | 8802 | nfs4_setup_sequence(data->clp, |
d9afbd1b TM |
8803 | &data->args->la_seq_args, |
8804 | &data->res->lr_seq_res, | |
8805 | task); | |
2050f0cc AA |
8806 | dprintk("<-- %s\n", __func__); |
8807 | } | |
8808 | ||
8809 | /* | |
8810 | * Called from nfs4_state_manager thread for session setup, so don't recover | |
8811 | * from sequence operation or clientid errors. | |
8812 | */ | |
8813 | static void nfs4_get_lease_time_done(struct rpc_task *task, void *calldata) | |
8814 | { | |
8815 | struct nfs4_get_lease_time_data *data = | |
8816 | (struct nfs4_get_lease_time_data *)calldata; | |
8817 | ||
8818 | dprintk("--> %s\n", __func__); | |
0efb01b2 | 8819 | if (!nfs4_sequence_done(task, &data->res->lr_seq_res)) |
14516c3a | 8820 | return; |
2050f0cc AA |
8821 | switch (task->tk_status) { |
8822 | case -NFS4ERR_DELAY: | |
8823 | case -NFS4ERR_GRACE: | |
8824 | dprintk("%s Retry: tk_status %d\n", __func__, task->tk_status); | |
8825 | rpc_delay(task, NFS4_POLL_RETRY_MIN); | |
8826 | task->tk_status = 0; | |
df561f66 | 8827 | fallthrough; |
a8a4ae3a | 8828 | case -NFS4ERR_RETRY_UNCACHED_REP: |
d00c5d43 | 8829 | rpc_restart_call_prepare(task); |
2050f0cc AA |
8830 | return; |
8831 | } | |
2050f0cc AA |
8832 | dprintk("<-- %s\n", __func__); |
8833 | } | |
8834 | ||
17280175 | 8835 | static const struct rpc_call_ops nfs4_get_lease_time_ops = { |
2050f0cc AA |
8836 | .rpc_call_prepare = nfs4_get_lease_time_prepare, |
8837 | .rpc_call_done = nfs4_get_lease_time_done, | |
8838 | }; | |
8839 | ||
8840 | int nfs4_proc_get_lease_time(struct nfs_client *clp, struct nfs_fsinfo *fsinfo) | |
8841 | { | |
2050f0cc AA |
8842 | struct nfs4_get_lease_time_args args; |
8843 | struct nfs4_get_lease_time_res res = { | |
8844 | .lr_fsinfo = fsinfo, | |
8845 | }; | |
8846 | struct nfs4_get_lease_time_data data = { | |
8847 | .args = &args, | |
8848 | .res = &res, | |
8849 | .clp = clp, | |
8850 | }; | |
8851 | struct rpc_message msg = { | |
8852 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GET_LEASE_TIME], | |
8853 | .rpc_argp = &args, | |
8854 | .rpc_resp = &res, | |
8855 | }; | |
8856 | struct rpc_task_setup task_setup = { | |
8857 | .rpc_client = clp->cl_rpcclient, | |
8858 | .rpc_message = &msg, | |
8859 | .callback_ops = &nfs4_get_lease_time_ops, | |
1bd714f2 TM |
8860 | .callback_data = &data, |
8861 | .flags = RPC_TASK_TIMEOUT, | |
2050f0cc | 8862 | }; |
2050f0cc | 8863 | |
fba83f34 | 8864 | nfs4_init_sequence(&args.la_seq_args, &res.lr_seq_res, 0, 1); |
f836b27e | 8865 | return nfs4_call_sync_custom(&task_setup); |
2050f0cc AA |
8866 | } |
8867 | ||
0efb01b2 DB |
8868 | #ifdef CONFIG_NFS_V4_1 |
8869 | ||
fc931582 AA |
8870 | /* |
8871 | * Initialize the values to be used by the client in CREATE_SESSION | |
8872 | * If nfs4_init_session set the fore channel request and response sizes, | |
8873 | * use them. | |
8874 | * | |
8875 | * Set the back channel max_resp_sz_cached to zero to force the client to | |
8876 | * always set csa_cachethis to FALSE because the current implementation | |
8877 | * of the back channel DRC only supports caching the CB_SEQUENCE operation. | |
8878 | */ | |
6b26cc8c CL |
8879 | static void nfs4_init_channel_attrs(struct nfs41_create_session_args *args, |
8880 | struct rpc_clnt *clnt) | |
fc931582 | 8881 | { |
18aad3d5 | 8882 | unsigned int max_rqst_sz, max_resp_sz; |
6b26cc8c | 8883 | unsigned int max_bc_payload = rpc_max_bc_payload(clnt); |
7402a4fe | 8884 | unsigned int max_bc_slots = rpc_num_bc_slots(clnt); |
18aad3d5 AA |
8885 | |
8886 | max_rqst_sz = NFS_MAX_FILE_IO_SIZE + nfs41_maxwrite_overhead; | |
8887 | max_resp_sz = NFS_MAX_FILE_IO_SIZE + nfs41_maxread_overhead; | |
fc931582 | 8888 | |
fc931582 | 8889 | /* Fore channel attributes */ |
18aad3d5 AA |
8890 | args->fc_attrs.max_rqst_sz = max_rqst_sz; |
8891 | args->fc_attrs.max_resp_sz = max_resp_sz; | |
fc931582 | 8892 | args->fc_attrs.max_ops = NFS4_MAX_OPS; |
ef159e91 | 8893 | args->fc_attrs.max_reqs = max_session_slots; |
fc931582 AA |
8894 | |
8895 | dprintk("%s: Fore Channel : max_rqst_sz=%u max_resp_sz=%u " | |
8e0d46e1 | 8896 | "max_ops=%u max_reqs=%u\n", |
fc931582 AA |
8897 | __func__, |
8898 | args->fc_attrs.max_rqst_sz, args->fc_attrs.max_resp_sz, | |
8e0d46e1 | 8899 | args->fc_attrs.max_ops, args->fc_attrs.max_reqs); |
fc931582 AA |
8900 | |
8901 | /* Back channel attributes */ | |
6b26cc8c CL |
8902 | args->bc_attrs.max_rqst_sz = max_bc_payload; |
8903 | args->bc_attrs.max_resp_sz = max_bc_payload; | |
fc931582 AA |
8904 | args->bc_attrs.max_resp_sz_cached = 0; |
8905 | args->bc_attrs.max_ops = NFS4_MAX_BACK_CHANNEL_OPS; | |
62421cd9 | 8906 | args->bc_attrs.max_reqs = max_t(unsigned short, max_session_cb_slots, 1); |
7402a4fe TM |
8907 | if (args->bc_attrs.max_reqs > max_bc_slots) |
8908 | args->bc_attrs.max_reqs = max_bc_slots; | |
fc931582 AA |
8909 | |
8910 | dprintk("%s: Back Channel : max_rqst_sz=%u max_resp_sz=%u " | |
8911 | "max_resp_sz_cached=%u max_ops=%u max_reqs=%u\n", | |
8912 | __func__, | |
8913 | args->bc_attrs.max_rqst_sz, args->bc_attrs.max_resp_sz, | |
8914 | args->bc_attrs.max_resp_sz_cached, args->bc_attrs.max_ops, | |
8915 | args->bc_attrs.max_reqs); | |
8916 | } | |
8917 | ||
79969dd1 TM |
8918 | static int nfs4_verify_fore_channel_attrs(struct nfs41_create_session_args *args, |
8919 | struct nfs41_create_session_res *res) | |
8d35301d | 8920 | { |
43c2e885 | 8921 | struct nfs4_channel_attrs *sent = &args->fc_attrs; |
79969dd1 | 8922 | struct nfs4_channel_attrs *rcvd = &res->fc_attrs; |
43c2e885 | 8923 | |
43c2e885 BF |
8924 | if (rcvd->max_resp_sz > sent->max_resp_sz) |
8925 | return -EINVAL; | |
8926 | /* | |
8927 | * Our requested max_ops is the minimum we need; we're not | |
8928 | * prepared to break up compounds into smaller pieces than that. | |
8929 | * So, no point even trying to continue if the server won't | |
8930 | * cooperate: | |
8931 | */ | |
8932 | if (rcvd->max_ops < sent->max_ops) | |
8933 | return -EINVAL; | |
8934 | if (rcvd->max_reqs == 0) | |
8935 | return -EINVAL; | |
b4b9a0c1 VG |
8936 | if (rcvd->max_reqs > NFS4_MAX_SLOT_TABLE) |
8937 | rcvd->max_reqs = NFS4_MAX_SLOT_TABLE; | |
43c2e885 | 8938 | return 0; |
8d35301d AA |
8939 | } |
8940 | ||
79969dd1 TM |
8941 | static int nfs4_verify_back_channel_attrs(struct nfs41_create_session_args *args, |
8942 | struct nfs41_create_session_res *res) | |
43c2e885 BF |
8943 | { |
8944 | struct nfs4_channel_attrs *sent = &args->bc_attrs; | |
79969dd1 | 8945 | struct nfs4_channel_attrs *rcvd = &res->bc_attrs; |
8d35301d | 8946 | |
b1c0df5f TM |
8947 | if (!(res->flags & SESSION4_BACK_CHAN)) |
8948 | goto out; | |
43c2e885 BF |
8949 | if (rcvd->max_rqst_sz > sent->max_rqst_sz) |
8950 | return -EINVAL; | |
8951 | if (rcvd->max_resp_sz < sent->max_resp_sz) | |
8952 | return -EINVAL; | |
8953 | if (rcvd->max_resp_sz_cached > sent->max_resp_sz_cached) | |
8954 | return -EINVAL; | |
5405fc44 | 8955 | if (rcvd->max_ops > sent->max_ops) |
43c2e885 | 8956 | return -EINVAL; |
5405fc44 | 8957 | if (rcvd->max_reqs > sent->max_reqs) |
43c2e885 | 8958 | return -EINVAL; |
b1c0df5f | 8959 | out: |
43c2e885 BF |
8960 | return 0; |
8961 | } | |
8d35301d | 8962 | |
8d35301d | 8963 | static int nfs4_verify_channel_attrs(struct nfs41_create_session_args *args, |
79969dd1 | 8964 | struct nfs41_create_session_res *res) |
8d35301d | 8965 | { |
43c2e885 | 8966 | int ret; |
8d35301d | 8967 | |
79969dd1 | 8968 | ret = nfs4_verify_fore_channel_attrs(args, res); |
43c2e885 BF |
8969 | if (ret) |
8970 | return ret; | |
79969dd1 TM |
8971 | return nfs4_verify_back_channel_attrs(args, res); |
8972 | } | |
8973 | ||
8974 | static void nfs4_update_session(struct nfs4_session *session, | |
8975 | struct nfs41_create_session_res *res) | |
8976 | { | |
8977 | nfs4_copy_sessionid(&session->sess_id, &res->sessionid); | |
e11259f9 TM |
8978 | /* Mark client id and session as being confirmed */ |
8979 | session->clp->cl_exchange_flags |= EXCHGID4_FLAG_CONFIRMED_R; | |
8980 | set_bit(NFS4_SESSION_ESTABLISHED, &session->session_state); | |
79969dd1 TM |
8981 | session->flags = res->flags; |
8982 | memcpy(&session->fc_attrs, &res->fc_attrs, sizeof(session->fc_attrs)); | |
b1c0df5f TM |
8983 | if (res->flags & SESSION4_BACK_CHAN) |
8984 | memcpy(&session->bc_attrs, &res->bc_attrs, | |
8985 | sizeof(session->bc_attrs)); | |
8d35301d AA |
8986 | } |
8987 | ||
848f5bda | 8988 | static int _nfs4_proc_create_session(struct nfs_client *clp, |
a52458b4 | 8989 | const struct cred *cred) |
fc931582 AA |
8990 | { |
8991 | struct nfs4_session *session = clp->cl_session; | |
8992 | struct nfs41_create_session_args args = { | |
8993 | .client = clp, | |
79969dd1 TM |
8994 | .clientid = clp->cl_clientid, |
8995 | .seqid = clp->cl_seqid, | |
fc931582 AA |
8996 | .cb_program = NFS4_CALLBACK, |
8997 | }; | |
79969dd1 TM |
8998 | struct nfs41_create_session_res res; |
8999 | ||
fc931582 AA |
9000 | struct rpc_message msg = { |
9001 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CREATE_SESSION], | |
9002 | .rpc_argp = &args, | |
9003 | .rpc_resp = &res, | |
848f5bda | 9004 | .rpc_cred = cred, |
fc931582 AA |
9005 | }; |
9006 | int status; | |
9007 | ||
6b26cc8c | 9008 | nfs4_init_channel_attrs(&args, clp->cl_rpcclient); |
0f91421e | 9009 | args.flags = (SESSION4_PERSIST | SESSION4_BACK_CHAN); |
fc931582 | 9010 | |
5a0c257f N |
9011 | status = rpc_call_sync(session->clp->cl_rpcclient, &msg, |
9012 | RPC_TASK_TIMEOUT | RPC_TASK_NO_ROUND_ROBIN); | |
c6d01c6f | 9013 | trace_nfs4_create_session(clp, status); |
fc931582 | 9014 | |
b519d408 TM |
9015 | switch (status) { |
9016 | case -NFS4ERR_STALE_CLIENTID: | |
9017 | case -NFS4ERR_DELAY: | |
9018 | case -ETIMEDOUT: | |
9019 | case -EACCES: | |
9020 | case -EAGAIN: | |
9021 | goto out; | |
8b98a532 | 9022 | } |
b519d408 TM |
9023 | |
9024 | clp->cl_seqid++; | |
43095d39 | 9025 | if (!status) { |
8d35301d | 9026 | /* Verify the session's negotiated channel_attrs values */ |
79969dd1 | 9027 | status = nfs4_verify_channel_attrs(&args, &res); |
fc931582 | 9028 | /* Increment the clientid slot sequence id */ |
79969dd1 TM |
9029 | if (status) |
9030 | goto out; | |
9031 | nfs4_update_session(session, &res); | |
fc931582 | 9032 | } |
79969dd1 | 9033 | out: |
fc931582 AA |
9034 | return status; |
9035 | } | |
9036 | ||
9037 | /* | |
9038 | * Issues a CREATE_SESSION operation to the server. | |
9039 | * It is the responsibility of the caller to verify the session is | |
9040 | * expired before calling this routine. | |
9041 | */ | |
a52458b4 | 9042 | int nfs4_proc_create_session(struct nfs_client *clp, const struct cred *cred) |
fc931582 AA |
9043 | { |
9044 | int status; | |
9045 | unsigned *ptr; | |
fc931582 AA |
9046 | struct nfs4_session *session = clp->cl_session; |
9047 | ||
9048 | dprintk("--> %s clp=%p session=%p\n", __func__, clp, session); | |
9049 | ||
848f5bda | 9050 | status = _nfs4_proc_create_session(clp, cred); |
fc931582 AA |
9051 | if (status) |
9052 | goto out; | |
9053 | ||
aacd5537 AA |
9054 | /* Init or reset the session slot tables */ |
9055 | status = nfs4_setup_session_slot_tables(session); | |
9056 | dprintk("slot table setup returned %d\n", status); | |
fc931582 AA |
9057 | if (status) |
9058 | goto out; | |
9059 | ||
9060 | ptr = (unsigned *)&session->sess_id.data[0]; | |
9061 | dprintk("%s client>seqid %d sessionid %u:%u:%u:%u\n", __func__, | |
9062 | clp->cl_seqid, ptr[0], ptr[1], ptr[2], ptr[3]); | |
fc931582 AA |
9063 | out: |
9064 | dprintk("<-- %s\n", __func__); | |
9065 | return status; | |
9066 | } | |
9067 | ||
0f3e66c6 AA |
9068 | /* |
9069 | * Issue the over-the-wire RPC DESTROY_SESSION. | |
9070 | * The caller must serialize access to this routine. | |
9071 | */ | |
848f5bda | 9072 | int nfs4_proc_destroy_session(struct nfs4_session *session, |
a52458b4 | 9073 | const struct cred *cred) |
0f3e66c6 | 9074 | { |
848f5bda TM |
9075 | struct rpc_message msg = { |
9076 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DESTROY_SESSION], | |
9077 | .rpc_argp = session, | |
9078 | .rpc_cred = cred, | |
9079 | }; | |
0f3e66c6 | 9080 | int status = 0; |
0f3e66c6 AA |
9081 | |
9082 | dprintk("--> nfs4_proc_destroy_session\n"); | |
9083 | ||
9084 | /* session is still being setup */ | |
e11259f9 TM |
9085 | if (!test_and_clear_bit(NFS4_SESSION_ESTABLISHED, &session->session_state)) |
9086 | return 0; | |
0f3e66c6 | 9087 | |
5a0c257f N |
9088 | status = rpc_call_sync(session->clp->cl_rpcclient, &msg, |
9089 | RPC_TASK_TIMEOUT | RPC_TASK_NO_ROUND_ROBIN); | |
c6d01c6f | 9090 | trace_nfs4_destroy_session(session->clp, status); |
0f3e66c6 AA |
9091 | |
9092 | if (status) | |
08106ac7 | 9093 | dprintk("NFS: Got error %d from the server on DESTROY_SESSION. " |
0f3e66c6 AA |
9094 | "Session has been destroyed regardless...\n", status); |
9095 | ||
9096 | dprintk("<-- nfs4_proc_destroy_session\n"); | |
9097 | return status; | |
9098 | } | |
9099 | ||
fc01cea9 AA |
9100 | /* |
9101 | * Renew the cl_session lease. | |
9102 | */ | |
d5f8d3fe TM |
9103 | struct nfs4_sequence_data { |
9104 | struct nfs_client *clp; | |
9105 | struct nfs4_sequence_args args; | |
9106 | struct nfs4_sequence_res res; | |
9107 | }; | |
9108 | ||
dc96aef9 AB |
9109 | static void nfs41_sequence_release(void *data) |
9110 | { | |
d5f8d3fe TM |
9111 | struct nfs4_sequence_data *calldata = data; |
9112 | struct nfs_client *clp = calldata->clp; | |
dc96aef9 | 9113 | |
212bf41d | 9114 | if (refcount_read(&clp->cl_count) > 1) |
7135840f AB |
9115 | nfs4_schedule_state_renewal(clp); |
9116 | nfs_put_client(clp); | |
d5f8d3fe | 9117 | kfree(calldata); |
dc96aef9 AB |
9118 | } |
9119 | ||
aa5190d0 TM |
9120 | static int nfs41_sequence_handle_errors(struct rpc_task *task, struct nfs_client *clp) |
9121 | { | |
9122 | switch(task->tk_status) { | |
9123 | case -NFS4ERR_DELAY: | |
aa5190d0 TM |
9124 | rpc_delay(task, NFS4_POLL_RETRY_MAX); |
9125 | return -EAGAIN; | |
9126 | default: | |
0400a6b0 | 9127 | nfs4_schedule_lease_recovery(clp); |
aa5190d0 TM |
9128 | } |
9129 | return 0; | |
9130 | } | |
9131 | ||
dc96aef9 | 9132 | static void nfs41_sequence_call_done(struct rpc_task *task, void *data) |
fc01cea9 | 9133 | { |
d5f8d3fe TM |
9134 | struct nfs4_sequence_data *calldata = data; |
9135 | struct nfs_client *clp = calldata->clp; | |
fc01cea9 | 9136 | |
14516c3a TM |
9137 | if (!nfs41_sequence_done(task, task->tk_msg.rpc_resp)) |
9138 | return; | |
fc01cea9 | 9139 | |
c6d01c6f | 9140 | trace_nfs4_sequence(clp, task->tk_status); |
fc01cea9 AA |
9141 | if (task->tk_status < 0) { |
9142 | dprintk("%s ERROR %d\n", __func__, task->tk_status); | |
212bf41d | 9143 | if (refcount_read(&clp->cl_count) == 1) |
7135840f | 9144 | goto out; |
fc01cea9 | 9145 | |
aa5190d0 TM |
9146 | if (nfs41_sequence_handle_errors(task, clp) == -EAGAIN) { |
9147 | rpc_restart_call_prepare(task); | |
fc01cea9 AA |
9148 | return; |
9149 | } | |
9150 | } | |
fc01cea9 | 9151 | dprintk("%s rpc_cred %p\n", __func__, task->tk_msg.rpc_cred); |
7135840f | 9152 | out: |
fc01cea9 AA |
9153 | dprintk("<-- %s\n", __func__); |
9154 | } | |
9155 | ||
9156 | static void nfs41_sequence_prepare(struct rpc_task *task, void *data) | |
9157 | { | |
d5f8d3fe TM |
9158 | struct nfs4_sequence_data *calldata = data; |
9159 | struct nfs_client *clp = calldata->clp; | |
fc01cea9 AA |
9160 | struct nfs4_sequence_args *args; |
9161 | struct nfs4_sequence_res *res; | |
9162 | ||
fc01cea9 AA |
9163 | args = task->tk_msg.rpc_argp; |
9164 | res = task->tk_msg.rpc_resp; | |
9165 | ||
7981c8a6 | 9166 | nfs4_setup_sequence(clp, args, res, task); |
fc01cea9 AA |
9167 | } |
9168 | ||
9169 | static const struct rpc_call_ops nfs41_sequence_ops = { | |
9170 | .rpc_call_done = nfs41_sequence_call_done, | |
9171 | .rpc_call_prepare = nfs41_sequence_prepare, | |
dc96aef9 | 9172 | .rpc_release = nfs41_sequence_release, |
fc01cea9 AA |
9173 | }; |
9174 | ||
8fe72bac | 9175 | static struct rpc_task *_nfs41_proc_sequence(struct nfs_client *clp, |
a52458b4 | 9176 | const struct cred *cred, |
3be0f80b | 9177 | struct nfs4_slot *slot, |
8fe72bac | 9178 | bool is_privileged) |
fc01cea9 | 9179 | { |
d5f8d3fe | 9180 | struct nfs4_sequence_data *calldata; |
fc01cea9 AA |
9181 | struct rpc_message msg = { |
9182 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SEQUENCE], | |
9183 | .rpc_cred = cred, | |
9184 | }; | |
71ac6da9 TM |
9185 | struct rpc_task_setup task_setup_data = { |
9186 | .rpc_client = clp->cl_rpcclient, | |
9187 | .rpc_message = &msg, | |
8fe72bac | 9188 | .callback_ops = &nfs41_sequence_ops, |
bc7a05ca | 9189 | .flags = RPC_TASK_ASYNC | RPC_TASK_TIMEOUT, |
71ac6da9 | 9190 | }; |
3be0f80b | 9191 | struct rpc_task *ret; |
fc01cea9 | 9192 | |
3be0f80b | 9193 | ret = ERR_PTR(-EIO); |
212bf41d | 9194 | if (!refcount_inc_not_zero(&clp->cl_count)) |
3be0f80b TM |
9195 | goto out_err; |
9196 | ||
9197 | ret = ERR_PTR(-ENOMEM); | |
dfb4f309 | 9198 | calldata = kzalloc(sizeof(*calldata), GFP_NOFS); |
3be0f80b TM |
9199 | if (calldata == NULL) |
9200 | goto out_put_clp; | |
fba83f34 | 9201 | nfs4_init_sequence(&calldata->args, &calldata->res, 0, is_privileged); |
3be0f80b | 9202 | nfs4_sequence_attach_slot(&calldata->args, &calldata->res, slot); |
d5f8d3fe TM |
9203 | msg.rpc_argp = &calldata->args; |
9204 | msg.rpc_resp = &calldata->res; | |
9205 | calldata->clp = clp; | |
71ac6da9 | 9206 | task_setup_data.callback_data = calldata; |
fc01cea9 | 9207 | |
3be0f80b TM |
9208 | ret = rpc_run_task(&task_setup_data); |
9209 | if (IS_ERR(ret)) | |
9210 | goto out_err; | |
9211 | return ret; | |
9212 | out_put_clp: | |
9213 | nfs_put_client(clp); | |
9214 | out_err: | |
9215 | nfs41_release_slot(slot); | |
9216 | return ret; | |
71ac6da9 TM |
9217 | } |
9218 | ||
a52458b4 | 9219 | static int nfs41_proc_async_sequence(struct nfs_client *clp, const struct cred *cred, unsigned renew_flags) |
71ac6da9 TM |
9220 | { |
9221 | struct rpc_task *task; | |
9222 | int ret = 0; | |
9223 | ||
2f60ea6b | 9224 | if ((renew_flags & NFS4_RENEW_TIMEOUT) == 0) |
d1f456b0 | 9225 | return -EAGAIN; |
3be0f80b | 9226 | task = _nfs41_proc_sequence(clp, cred, NULL, false); |
71ac6da9 TM |
9227 | if (IS_ERR(task)) |
9228 | ret = PTR_ERR(task); | |
9229 | else | |
bf294b41 | 9230 | rpc_put_task_async(task); |
71ac6da9 TM |
9231 | dprintk("<-- %s status=%d\n", __func__, ret); |
9232 | return ret; | |
9233 | } | |
9234 | ||
a52458b4 | 9235 | static int nfs4_proc_sequence(struct nfs_client *clp, const struct cred *cred) |
71ac6da9 TM |
9236 | { |
9237 | struct rpc_task *task; | |
9238 | int ret; | |
9239 | ||
3be0f80b | 9240 | task = _nfs41_proc_sequence(clp, cred, NULL, true); |
71ac6da9 TM |
9241 | if (IS_ERR(task)) { |
9242 | ret = PTR_ERR(task); | |
9243 | goto out; | |
9244 | } | |
9245 | ret = rpc_wait_for_completion_task(task); | |
be824167 | 9246 | if (!ret) |
71ac6da9 TM |
9247 | ret = task->tk_status; |
9248 | rpc_put_task(task); | |
9249 | out: | |
9250 | dprintk("<-- %s status=%d\n", __func__, ret); | |
9251 | return ret; | |
fc01cea9 AA |
9252 | } |
9253 | ||
fce5c838 RL |
9254 | struct nfs4_reclaim_complete_data { |
9255 | struct nfs_client *clp; | |
9256 | struct nfs41_reclaim_complete_args arg; | |
9257 | struct nfs41_reclaim_complete_res res; | |
9258 | }; | |
9259 | ||
9260 | static void nfs4_reclaim_complete_prepare(struct rpc_task *task, void *data) | |
9261 | { | |
9262 | struct nfs4_reclaim_complete_data *calldata = data; | |
9263 | ||
7981c8a6 | 9264 | nfs4_setup_sequence(calldata->clp, |
d9afbd1b TM |
9265 | &calldata->arg.seq_args, |
9266 | &calldata->res.seq_res, | |
9267 | task); | |
fce5c838 RL |
9268 | } |
9269 | ||
aa5190d0 TM |
9270 | static int nfs41_reclaim_complete_handle_errors(struct rpc_task *task, struct nfs_client *clp) |
9271 | { | |
9272 | switch(task->tk_status) { | |
9273 | case 0: | |
57174593 | 9274 | wake_up_all(&clp->cl_lock_waitq); |
df561f66 | 9275 | fallthrough; |
aa5190d0 TM |
9276 | case -NFS4ERR_COMPLETE_ALREADY: |
9277 | case -NFS4ERR_WRONG_CRED: /* What to do here? */ | |
9278 | break; | |
9279 | case -NFS4ERR_DELAY: | |
aa5190d0 | 9280 | rpc_delay(task, NFS4_POLL_RETRY_MAX); |
df561f66 | 9281 | fallthrough; |
a8a4ae3a | 9282 | case -NFS4ERR_RETRY_UNCACHED_REP: |
aa5190d0 | 9283 | return -EAGAIN; |
0048fdd0 TM |
9284 | case -NFS4ERR_BADSESSION: |
9285 | case -NFS4ERR_DEADSESSION: | |
9286 | case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: | |
0048fdd0 | 9287 | break; |
aa5190d0 | 9288 | default: |
0400a6b0 | 9289 | nfs4_schedule_lease_recovery(clp); |
aa5190d0 TM |
9290 | } |
9291 | return 0; | |
9292 | } | |
9293 | ||
fce5c838 RL |
9294 | static void nfs4_reclaim_complete_done(struct rpc_task *task, void *data) |
9295 | { | |
9296 | struct nfs4_reclaim_complete_data *calldata = data; | |
9297 | struct nfs_client *clp = calldata->clp; | |
9298 | struct nfs4_sequence_res *res = &calldata->res.seq_res; | |
9299 | ||
9300 | dprintk("--> %s\n", __func__); | |
14516c3a TM |
9301 | if (!nfs41_sequence_done(task, res)) |
9302 | return; | |
fce5c838 | 9303 | |
c6d01c6f | 9304 | trace_nfs4_reclaim_complete(clp, task->tk_status); |
aa5190d0 TM |
9305 | if (nfs41_reclaim_complete_handle_errors(task, clp) == -EAGAIN) { |
9306 | rpc_restart_call_prepare(task); | |
9307 | return; | |
9308 | } | |
fce5c838 RL |
9309 | dprintk("<-- %s\n", __func__); |
9310 | } | |
9311 | ||
9312 | static void nfs4_free_reclaim_complete_data(void *data) | |
9313 | { | |
9314 | struct nfs4_reclaim_complete_data *calldata = data; | |
9315 | ||
9316 | kfree(calldata); | |
9317 | } | |
9318 | ||
9319 | static const struct rpc_call_ops nfs4_reclaim_complete_call_ops = { | |
9320 | .rpc_call_prepare = nfs4_reclaim_complete_prepare, | |
9321 | .rpc_call_done = nfs4_reclaim_complete_done, | |
9322 | .rpc_release = nfs4_free_reclaim_complete_data, | |
9323 | }; | |
9324 | ||
9325 | /* | |
9326 | * Issue a global reclaim complete. | |
9327 | */ | |
965e9c23 | 9328 | static int nfs41_proc_reclaim_complete(struct nfs_client *clp, |
a52458b4 | 9329 | const struct cred *cred) |
fce5c838 RL |
9330 | { |
9331 | struct nfs4_reclaim_complete_data *calldata; | |
fce5c838 RL |
9332 | struct rpc_message msg = { |
9333 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RECLAIM_COMPLETE], | |
965e9c23 | 9334 | .rpc_cred = cred, |
fce5c838 RL |
9335 | }; |
9336 | struct rpc_task_setup task_setup_data = { | |
9337 | .rpc_client = clp->cl_rpcclient, | |
9338 | .rpc_message = &msg, | |
9339 | .callback_ops = &nfs4_reclaim_complete_call_ops, | |
4c952e3d | 9340 | .flags = RPC_TASK_NO_ROUND_ROBIN, |
fce5c838 RL |
9341 | }; |
9342 | int status = -ENOMEM; | |
9343 | ||
9344 | dprintk("--> %s\n", __func__); | |
8535b2be | 9345 | calldata = kzalloc(sizeof(*calldata), GFP_NOFS); |
fce5c838 RL |
9346 | if (calldata == NULL) |
9347 | goto out; | |
9348 | calldata->clp = clp; | |
9349 | calldata->arg.one_fs = 0; | |
fce5c838 | 9350 | |
fba83f34 | 9351 | nfs4_init_sequence(&calldata->arg.seq_args, &calldata->res.seq_res, 0, 1); |
fce5c838 RL |
9352 | msg.rpc_argp = &calldata->arg; |
9353 | msg.rpc_resp = &calldata->res; | |
9354 | task_setup_data.callback_data = calldata; | |
4c952e3d | 9355 | status = nfs4_call_sync_custom(&task_setup_data); |
fce5c838 RL |
9356 | out: |
9357 | dprintk("<-- %s status=%d\n", __func__, status); | |
9358 | return status; | |
9359 | } | |
b1f69b75 AA |
9360 | |
9361 | static void | |
9362 | nfs4_layoutget_prepare(struct rpc_task *task, void *calldata) | |
9363 | { | |
9364 | struct nfs4_layoutget *lgp = calldata; | |
c31663d4 | 9365 | struct nfs_server *server = NFS_SERVER(lgp->args.inode); |
b1f69b75 AA |
9366 | |
9367 | dprintk("--> %s\n", __func__); | |
7981c8a6 | 9368 | nfs4_setup_sequence(server->nfs_client, &lgp->args.seq_args, |
183d9e7b JL |
9369 | &lgp->res.seq_res, task); |
9370 | dprintk("<-- %s\n", __func__); | |
b1f69b75 AA |
9371 | } |
9372 | ||
9373 | static void nfs4_layoutget_done(struct rpc_task *task, void *calldata) | |
9374 | { | |
9375 | struct nfs4_layoutget *lgp = calldata; | |
183d9e7b JL |
9376 | |
9377 | dprintk("--> %s\n", __func__); | |
2e80dbe7 | 9378 | nfs41_sequence_process(task, &lgp->res.seq_res); |
183d9e7b JL |
9379 | dprintk("<-- %s\n", __func__); |
9380 | } | |
9381 | ||
9382 | static int | |
9383 | nfs4_layoutget_handle_exception(struct rpc_task *task, | |
9384 | struct nfs4_layoutget *lgp, struct nfs4_exception *exception) | |
9385 | { | |
ee314c2a TM |
9386 | struct inode *inode = lgp->args.inode; |
9387 | struct nfs_server *server = NFS_SERVER(inode); | |
9388 | struct pnfs_layout_hdr *lo; | |
e85d7ee4 TM |
9389 | int nfs4err = task->tk_status; |
9390 | int err, status = 0; | |
f7db0b28 | 9391 | LIST_HEAD(head); |
b1f69b75 | 9392 | |
ed7e5423 | 9393 | dprintk("--> %s tk_status => %d\n", __func__, -task->tk_status); |
b1f69b75 | 9394 | |
2dbf8dff TM |
9395 | nfs4_sequence_free_slot(&lgp->res.seq_res); |
9396 | ||
e85d7ee4 | 9397 | switch (nfs4err) { |
b1f69b75 | 9398 | case 0: |
ee314c2a | 9399 | goto out; |
7c1e6e58 PT |
9400 | |
9401 | /* | |
9402 | * NFS4ERR_LAYOUTUNAVAILABLE means we are not supposed to use pnfs | |
9403 | * on the file. set tk_status to -ENODATA to tell upper layer to | |
9404 | * retry go inband. | |
9405 | */ | |
9406 | case -NFS4ERR_LAYOUTUNAVAILABLE: | |
183d9e7b | 9407 | status = -ENODATA; |
7c1e6e58 | 9408 | goto out; |
21b874c8 TM |
9409 | /* |
9410 | * NFS4ERR_BADLAYOUT means the MDS cannot return a layout of | |
9411 | * length lgp->args.minlength != 0 (see RFC5661 section 18.43.3). | |
9412 | */ | |
9413 | case -NFS4ERR_BADLAYOUT: | |
183d9e7b JL |
9414 | status = -EOVERFLOW; |
9415 | goto out; | |
ed7e5423 BH |
9416 | /* |
9417 | * NFS4ERR_LAYOUTTRYLATER is a conflict with another client | |
21b874c8 TM |
9418 | * (or clients) writing to the same RAID stripe except when |
9419 | * the minlength argument is 0 (see RFC5661 section 18.43.3). | |
183d9e7b JL |
9420 | * |
9421 | * Treat it like we would RECALLCONFLICT -- we retry for a little | |
9422 | * while, and then eventually give up. | |
ed7e5423 | 9423 | */ |
b1f69b75 | 9424 | case -NFS4ERR_LAYOUTTRYLATER: |
183d9e7b JL |
9425 | if (lgp->args.minlength == 0) { |
9426 | status = -EOVERFLOW; | |
9427 | goto out; | |
ed7e5423 | 9428 | } |
e85d7ee4 TM |
9429 | status = -EBUSY; |
9430 | break; | |
183d9e7b | 9431 | case -NFS4ERR_RECALLCONFLICT: |
183d9e7b | 9432 | status = -ERECALLCONFLICT; |
e85d7ee4 | 9433 | break; |
26f47443 TM |
9434 | case -NFS4ERR_DELEG_REVOKED: |
9435 | case -NFS4ERR_ADMIN_REVOKED: | |
ee314c2a TM |
9436 | case -NFS4ERR_EXPIRED: |
9437 | case -NFS4ERR_BAD_STATEID: | |
183d9e7b | 9438 | exception->timeout = 0; |
ee314c2a | 9439 | spin_lock(&inode->i_lock); |
f7db0b28 TM |
9440 | lo = NFS_I(inode)->layout; |
9441 | /* If the open stateid was bad, then recover it. */ | |
9442 | if (!lo || test_bit(NFS_LAYOUT_INVALID_STID, &lo->plh_flags) || | |
e8fa33a6 | 9443 | !nfs4_stateid_match_other(&lgp->args.stateid, &lo->plh_stateid)) { |
ee314c2a | 9444 | spin_unlock(&inode->i_lock); |
183d9e7b | 9445 | exception->state = lgp->args.ctx->state; |
26f47443 | 9446 | exception->stateid = &lgp->args.stateid; |
2259f960 TM |
9447 | break; |
9448 | } | |
f7db0b28 TM |
9449 | |
9450 | /* | |
9451 | * Mark the bad layout state as invalid, then retry | |
9452 | */ | |
668f455d | 9453 | pnfs_mark_layout_stateid_invalid(lo, &head); |
f7db0b28 | 9454 | spin_unlock(&inode->i_lock); |
1f18b82c | 9455 | nfs_commit_inode(inode, 0); |
f7db0b28 TM |
9456 | pnfs_free_lseg_list(&head); |
9457 | status = -EAGAIN; | |
9458 | goto out; | |
b1f69b75 | 9459 | } |
183d9e7b | 9460 | |
e85d7ee4 TM |
9461 | err = nfs4_handle_exception(server, nfs4err, exception); |
9462 | if (!status) { | |
9463 | if (exception->retry) | |
9464 | status = -EAGAIN; | |
9465 | else | |
9466 | status = err; | |
9467 | } | |
ee314c2a | 9468 | out: |
b1f69b75 | 9469 | dprintk("<-- %s\n", __func__); |
183d9e7b | 9470 | return status; |
b1f69b75 AA |
9471 | } |
9472 | ||
dacb452d | 9473 | size_t max_response_pages(struct nfs_server *server) |
8554116e IK |
9474 | { |
9475 | u32 max_resp_sz = server->nfs_client->cl_session->fc_attrs.max_resp_sz; | |
9476 | return nfs_page_array_len(0, max_resp_sz); | |
9477 | } | |
9478 | ||
b1f69b75 AA |
9479 | static void nfs4_layoutget_release(void *calldata) |
9480 | { | |
9481 | struct nfs4_layoutget *lgp = calldata; | |
9482 | ||
9483 | dprintk("--> %s\n", __func__); | |
bd171930 | 9484 | nfs4_sequence_free_slot(&lgp->res.seq_res); |
29a8bfe5 | 9485 | pnfs_layoutget_free(lgp); |
b1f69b75 AA |
9486 | dprintk("<-- %s\n", __func__); |
9487 | } | |
9488 | ||
9489 | static const struct rpc_call_ops nfs4_layoutget_call_ops = { | |
9490 | .rpc_call_prepare = nfs4_layoutget_prepare, | |
9491 | .rpc_call_done = nfs4_layoutget_done, | |
9492 | .rpc_release = nfs4_layoutget_release, | |
9493 | }; | |
9494 | ||
a0b0a6e3 | 9495 | struct pnfs_layout_segment * |
dacb452d | 9496 | nfs4_proc_layoutget(struct nfs4_layoutget *lgp, long *timeout) |
b1f69b75 | 9497 | { |
a47970ff WAA |
9498 | struct inode *inode = lgp->args.inode; |
9499 | struct nfs_server *server = NFS_SERVER(inode); | |
b1f69b75 AA |
9500 | struct rpc_task *task; |
9501 | struct rpc_message msg = { | |
9502 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTGET], | |
9503 | .rpc_argp = &lgp->args, | |
9504 | .rpc_resp = &lgp->res, | |
6ab59344 | 9505 | .rpc_cred = lgp->cred, |
b1f69b75 AA |
9506 | }; |
9507 | struct rpc_task_setup task_setup_data = { | |
9508 | .rpc_client = server->client, | |
9509 | .rpc_message = &msg, | |
9510 | .callback_ops = &nfs4_layoutget_call_ops, | |
9511 | .callback_data = lgp, | |
63ec2b69 | 9512 | .flags = RPC_TASK_ASYNC | RPC_TASK_CRED_NOREF, |
b1f69b75 | 9513 | }; |
a0b0a6e3 | 9514 | struct pnfs_layout_segment *lseg = NULL; |
bc23676c TM |
9515 | struct nfs4_exception exception = { |
9516 | .inode = inode, | |
9517 | .timeout = *timeout, | |
9518 | }; | |
b1f69b75 AA |
9519 | int status = 0; |
9520 | ||
9521 | dprintk("--> %s\n", __func__); | |
9522 | ||
4bd5a980 PT |
9523 | /* nfs4_layoutget_release calls pnfs_put_layout_hdr */ |
9524 | pnfs_get_layout_hdr(NFS_I(inode)->layout); | |
9525 | ||
fba83f34 | 9526 | nfs4_init_sequence(&lgp->args.seq_args, &lgp->res.seq_res, 0, 0); |
a47970ff | 9527 | |
b1f69b75 | 9528 | task = rpc_run_task(&task_setup_data); |
6e47666e | 9529 | |
820bf85c | 9530 | status = rpc_wait_for_completion_task(task); |
2dbf8dff TM |
9531 | if (status != 0) |
9532 | goto out; | |
9533 | ||
18c0778a | 9534 | if (task->tk_status < 0) { |
183d9e7b JL |
9535 | status = nfs4_layoutget_handle_exception(task, lgp, &exception); |
9536 | *timeout = exception.timeout; | |
18c0778a TM |
9537 | } else if (lgp->res.layoutp->len == 0) { |
9538 | status = -EAGAIN; | |
9539 | *timeout = nfs4_update_delay(&exception.timeout); | |
2dbf8dff TM |
9540 | } else |
9541 | lseg = pnfs_layout_process(lgp); | |
9542 | out: | |
1037e6ea TM |
9543 | trace_nfs4_layoutget(lgp->args.ctx, |
9544 | &lgp->args.range, | |
9545 | &lgp->res.range, | |
48c9579a | 9546 | &lgp->res.stateid, |
1037e6ea | 9547 | status); |
183d9e7b | 9548 | |
b1f69b75 AA |
9549 | rpc_put_task(task); |
9550 | dprintk("<-- %s status=%d\n", __func__, status); | |
a0b0a6e3 TM |
9551 | if (status) |
9552 | return ERR_PTR(status); | |
9553 | return lseg; | |
b1f69b75 AA |
9554 | } |
9555 | ||
cbe82603 BH |
9556 | static void |
9557 | nfs4_layoutreturn_prepare(struct rpc_task *task, void *calldata) | |
9558 | { | |
9559 | struct nfs4_layoutreturn *lrp = calldata; | |
9560 | ||
9561 | dprintk("--> %s\n", __func__); | |
7981c8a6 | 9562 | nfs4_setup_sequence(lrp->clp, |
d9afbd1b TM |
9563 | &lrp->args.seq_args, |
9564 | &lrp->res.seq_res, | |
9565 | task); | |
c8bf7073 TM |
9566 | if (!pnfs_layout_is_valid(lrp->args.layout)) |
9567 | rpc_exit(task, 0); | |
cbe82603 BH |
9568 | } |
9569 | ||
9570 | static void nfs4_layoutreturn_done(struct rpc_task *task, void *calldata) | |
9571 | { | |
9572 | struct nfs4_layoutreturn *lrp = calldata; | |
9573 | struct nfs_server *server; | |
9574 | ||
9575 | dprintk("--> %s\n", __func__); | |
9576 | ||
2e80dbe7 | 9577 | if (!nfs41_sequence_process(task, &lrp->res.seq_res)) |
cbe82603 BH |
9578 | return; |
9579 | ||
6109bcf7 TM |
9580 | /* |
9581 | * Was there an RPC level error? Assume the call succeeded, | |
9582 | * and that we need to release the layout | |
9583 | */ | |
9584 | if (task->tk_rpc_status != 0 && RPC_WAS_SENT(task)) { | |
9585 | lrp->res.lrs_present = 0; | |
9586 | return; | |
9587 | } | |
9588 | ||
cbe82603 | 9589 | server = NFS_SERVER(lrp->args.inode); |
f22e5edd | 9590 | switch (task->tk_status) { |
ff90514e | 9591 | case -NFS4ERR_OLD_STATEID: |
30cb3ee2 | 9592 | if (nfs4_layout_refresh_old_stateid(&lrp->args.stateid, |
ecf84026 | 9593 | &lrp->args.range, |
ff90514e TM |
9594 | lrp->args.inode)) |
9595 | goto out_restart; | |
df561f66 | 9596 | fallthrough; |
f22e5edd TM |
9597 | default: |
9598 | task->tk_status = 0; | |
df561f66 | 9599 | fallthrough; |
f22e5edd TM |
9600 | case 0: |
9601 | break; | |
9602 | case -NFS4ERR_DELAY: | |
8478eaa1 | 9603 | if (nfs4_async_handle_error(task, server, NULL, NULL) != -EAGAIN) |
f22e5edd | 9604 | break; |
ff90514e | 9605 | goto out_restart; |
cbe82603 | 9606 | } |
cbe82603 | 9607 | dprintk("<-- %s\n", __func__); |
ff90514e TM |
9608 | return; |
9609 | out_restart: | |
9610 | task->tk_status = 0; | |
9611 | nfs4_sequence_free_slot(&lrp->res.seq_res); | |
9612 | rpc_restart_call_prepare(task); | |
cbe82603 BH |
9613 | } |
9614 | ||
9615 | static void nfs4_layoutreturn_release(void *calldata) | |
9616 | { | |
9617 | struct nfs4_layoutreturn *lrp = calldata; | |
849b286f | 9618 | struct pnfs_layout_hdr *lo = lrp->args.layout; |
cbe82603 BH |
9619 | |
9620 | dprintk("--> %s\n", __func__); | |
2a974425 | 9621 | pnfs_layoutreturn_free_lsegs(lo, &lrp->args.stateid, &lrp->args.range, |
68f74479 | 9622 | lrp->res.lrs_present ? &lrp->res.stateid : NULL); |
2e80dbe7 | 9623 | nfs4_sequence_free_slot(&lrp->res.seq_res); |
4d796d75 TM |
9624 | if (lrp->ld_private.ops && lrp->ld_private.ops->free) |
9625 | lrp->ld_private.ops->free(&lrp->ld_private); | |
2f065ddb TM |
9626 | pnfs_put_layout_hdr(lrp->args.layout); |
9627 | nfs_iput_and_deactive(lrp->inode); | |
44ea8dfc | 9628 | put_cred(lrp->cred); |
cbe82603 BH |
9629 | kfree(calldata); |
9630 | dprintk("<-- %s\n", __func__); | |
9631 | } | |
9632 | ||
9633 | static const struct rpc_call_ops nfs4_layoutreturn_call_ops = { | |
9634 | .rpc_call_prepare = nfs4_layoutreturn_prepare, | |
9635 | .rpc_call_done = nfs4_layoutreturn_done, | |
9636 | .rpc_release = nfs4_layoutreturn_release, | |
9637 | }; | |
9638 | ||
6c16605d | 9639 | int nfs4_proc_layoutreturn(struct nfs4_layoutreturn *lrp, bool sync) |
cbe82603 BH |
9640 | { |
9641 | struct rpc_task *task; | |
9642 | struct rpc_message msg = { | |
9643 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTRETURN], | |
9644 | .rpc_argp = &lrp->args, | |
9645 | .rpc_resp = &lrp->res, | |
9556000d | 9646 | .rpc_cred = lrp->cred, |
cbe82603 BH |
9647 | }; |
9648 | struct rpc_task_setup task_setup_data = { | |
1771c577 | 9649 | .rpc_client = NFS_SERVER(lrp->args.inode)->client, |
cbe82603 BH |
9650 | .rpc_message = &msg, |
9651 | .callback_ops = &nfs4_layoutreturn_call_ops, | |
9652 | .callback_data = lrp, | |
9653 | }; | |
6c16605d | 9654 | int status = 0; |
cbe82603 | 9655 | |
99ade3c7 AE |
9656 | nfs4_state_protect(NFS_SERVER(lrp->args.inode)->nfs_client, |
9657 | NFS_SP4_MACH_CRED_PNFS_CLEANUP, | |
9658 | &task_setup_data.rpc_client, &msg); | |
9659 | ||
cbe82603 | 9660 | dprintk("--> %s\n", __func__); |
c3aba897 | 9661 | lrp->inode = nfs_igrab_and_active(lrp->args.inode); |
5a0ec8ac | 9662 | if (!sync) { |
5a0ec8ac TM |
9663 | if (!lrp->inode) { |
9664 | nfs4_layoutreturn_release(lrp); | |
9665 | return -EAGAIN; | |
9666 | } | |
9667 | task_setup_data.flags |= RPC_TASK_ASYNC; | |
9668 | } | |
c3aba897 TM |
9669 | if (!lrp->inode) |
9670 | nfs4_init_sequence(&lrp->args.seq_args, &lrp->res.seq_res, 1, | |
9671 | 1); | |
9672 | else | |
9673 | nfs4_init_sequence(&lrp->args.seq_args, &lrp->res.seq_res, 1, | |
9674 | 0); | |
cbe82603 BH |
9675 | task = rpc_run_task(&task_setup_data); |
9676 | if (IS_ERR(task)) | |
9677 | return PTR_ERR(task); | |
5a0ec8ac TM |
9678 | if (sync) |
9679 | status = task->tk_status; | |
48c9579a | 9680 | trace_nfs4_layoutreturn(lrp->args.inode, &lrp->args.stateid, status); |
cbe82603 BH |
9681 | dprintk("<-- %s status=%d\n", __func__, status); |
9682 | rpc_put_task(task); | |
9683 | return status; | |
9684 | } | |
9685 | ||
b1f69b75 | 9686 | static int |
cd5875fe TM |
9687 | _nfs4_proc_getdeviceinfo(struct nfs_server *server, |
9688 | struct pnfs_device *pdev, | |
a52458b4 | 9689 | const struct cred *cred) |
b1f69b75 AA |
9690 | { |
9691 | struct nfs4_getdeviceinfo_args args = { | |
9692 | .pdev = pdev, | |
4e590803 TM |
9693 | .notify_types = NOTIFY_DEVICEID4_CHANGE | |
9694 | NOTIFY_DEVICEID4_DELETE, | |
b1f69b75 AA |
9695 | }; |
9696 | struct nfs4_getdeviceinfo_res res = { | |
9697 | .pdev = pdev, | |
9698 | }; | |
9699 | struct rpc_message msg = { | |
9700 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETDEVICEINFO], | |
9701 | .rpc_argp = &args, | |
9702 | .rpc_resp = &res, | |
cd5875fe | 9703 | .rpc_cred = cred, |
b1f69b75 AA |
9704 | }; |
9705 | int status; | |
9706 | ||
9707 | dprintk("--> %s\n", __func__); | |
7c513058 | 9708 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
4e590803 TM |
9709 | if (res.notification & ~args.notify_types) |
9710 | dprintk("%s: unsupported notification\n", __func__); | |
df52699e TM |
9711 | if (res.notification != args.notify_types) |
9712 | pdev->nocache = 1; | |
4e590803 | 9713 | |
cac1d3a2 TM |
9714 | trace_nfs4_getdeviceinfo(server, &pdev->dev_id, status); |
9715 | ||
b1f69b75 AA |
9716 | dprintk("<-- %s status=%d\n", __func__, status); |
9717 | ||
9718 | return status; | |
9719 | } | |
9720 | ||
cd5875fe TM |
9721 | int nfs4_proc_getdeviceinfo(struct nfs_server *server, |
9722 | struct pnfs_device *pdev, | |
a52458b4 | 9723 | const struct cred *cred) |
b1f69b75 AA |
9724 | { |
9725 | struct nfs4_exception exception = { }; | |
9726 | int err; | |
9727 | ||
9728 | do { | |
9729 | err = nfs4_handle_exception(server, | |
cd5875fe | 9730 | _nfs4_proc_getdeviceinfo(server, pdev, cred), |
b1f69b75 AA |
9731 | &exception); |
9732 | } while (exception.retry); | |
9733 | return err; | |
9734 | } | |
9735 | EXPORT_SYMBOL_GPL(nfs4_proc_getdeviceinfo); | |
9736 | ||
863a3c6c AA |
9737 | static void nfs4_layoutcommit_prepare(struct rpc_task *task, void *calldata) |
9738 | { | |
9739 | struct nfs4_layoutcommit_data *data = calldata; | |
9740 | struct nfs_server *server = NFS_SERVER(data->args.inode); | |
9741 | ||
7981c8a6 | 9742 | nfs4_setup_sequence(server->nfs_client, |
d9afbd1b TM |
9743 | &data->args.seq_args, |
9744 | &data->res.seq_res, | |
9745 | task); | |
863a3c6c AA |
9746 | } |
9747 | ||
9748 | static void | |
9749 | nfs4_layoutcommit_done(struct rpc_task *task, void *calldata) | |
9750 | { | |
9751 | struct nfs4_layoutcommit_data *data = calldata; | |
9752 | struct nfs_server *server = NFS_SERVER(data->args.inode); | |
9753 | ||
6ba7db34 | 9754 | if (!nfs41_sequence_done(task, &data->res.seq_res)) |
863a3c6c AA |
9755 | return; |
9756 | ||
9757 | switch (task->tk_status) { /* Just ignore these failures */ | |
e59d27e0 TM |
9758 | case -NFS4ERR_DELEG_REVOKED: /* layout was recalled */ |
9759 | case -NFS4ERR_BADIOMODE: /* no IOMODE_RW layout for range */ | |
9760 | case -NFS4ERR_BADLAYOUT: /* no layout */ | |
9761 | case -NFS4ERR_GRACE: /* loca_recalim always false */ | |
863a3c6c | 9762 | task->tk_status = 0; |
ffb81717 | 9763 | break; |
e59d27e0 | 9764 | case 0: |
e59d27e0 TM |
9765 | break; |
9766 | default: | |
8478eaa1 | 9767 | if (nfs4_async_handle_error(task, server, NULL, NULL) == -EAGAIN) { |
e59d27e0 TM |
9768 | rpc_restart_call_prepare(task); |
9769 | return; | |
9770 | } | |
9771 | } | |
863a3c6c AA |
9772 | } |
9773 | ||
9774 | static void nfs4_layoutcommit_release(void *calldata) | |
9775 | { | |
9776 | struct nfs4_layoutcommit_data *data = calldata; | |
9777 | ||
db29c089 | 9778 | pnfs_cleanup_layoutcommit(data); |
d8c951c3 TM |
9779 | nfs_post_op_update_inode_force_wcc(data->args.inode, |
9780 | data->res.fattr); | |
a52458b4 | 9781 | put_cred(data->cred); |
472e2594 | 9782 | nfs_iput_and_deactive(data->inode); |
863a3c6c AA |
9783 | kfree(data); |
9784 | } | |
9785 | ||
9786 | static const struct rpc_call_ops nfs4_layoutcommit_ops = { | |
9787 | .rpc_call_prepare = nfs4_layoutcommit_prepare, | |
9788 | .rpc_call_done = nfs4_layoutcommit_done, | |
9789 | .rpc_release = nfs4_layoutcommit_release, | |
9790 | }; | |
9791 | ||
9792 | int | |
ef311537 | 9793 | nfs4_proc_layoutcommit(struct nfs4_layoutcommit_data *data, bool sync) |
863a3c6c AA |
9794 | { |
9795 | struct rpc_message msg = { | |
9796 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTCOMMIT], | |
9797 | .rpc_argp = &data->args, | |
9798 | .rpc_resp = &data->res, | |
9799 | .rpc_cred = data->cred, | |
9800 | }; | |
9801 | struct rpc_task_setup task_setup_data = { | |
9802 | .task = &data->task, | |
9803 | .rpc_client = NFS_CLIENT(data->args.inode), | |
9804 | .rpc_message = &msg, | |
9805 | .callback_ops = &nfs4_layoutcommit_ops, | |
9806 | .callback_data = data, | |
863a3c6c AA |
9807 | }; |
9808 | struct rpc_task *task; | |
9809 | int status = 0; | |
9810 | ||
b4839ebe KM |
9811 | dprintk("NFS: initiating layoutcommit call. sync %d " |
9812 | "lbw: %llu inode %lu\n", sync, | |
863a3c6c AA |
9813 | data->args.lastbytewritten, |
9814 | data->args.inode->i_ino); | |
9815 | ||
472e2594 TM |
9816 | if (!sync) { |
9817 | data->inode = nfs_igrab_and_active(data->args.inode); | |
9818 | if (data->inode == NULL) { | |
9819 | nfs4_layoutcommit_release(data); | |
9820 | return -EAGAIN; | |
9821 | } | |
9822 | task_setup_data.flags = RPC_TASK_ASYNC; | |
9823 | } | |
fba83f34 | 9824 | nfs4_init_sequence(&data->args.seq_args, &data->res.seq_res, 1, 0); |
863a3c6c AA |
9825 | task = rpc_run_task(&task_setup_data); |
9826 | if (IS_ERR(task)) | |
9827 | return PTR_ERR(task); | |
472e2594 TM |
9828 | if (sync) |
9829 | status = task->tk_status; | |
48c9579a | 9830 | trace_nfs4_layoutcommit(data->args.inode, &data->args.stateid, status); |
863a3c6c AA |
9831 | dprintk("%s: status %d\n", __func__, status); |
9832 | rpc_put_task(task); | |
9833 | return status; | |
9834 | } | |
fca78d6d | 9835 | |
302fad7b | 9836 | /* |
97431204 AA |
9837 | * Use the state managment nfs_client cl_rpcclient, which uses krb5i (if |
9838 | * possible) as per RFC3530bis and RFC5661 Security Considerations sections | |
9839 | */ | |
fca78d6d BS |
9840 | static int |
9841 | _nfs41_proc_secinfo_no_name(struct nfs_server *server, struct nfs_fh *fhandle, | |
b1b3e136 WAA |
9842 | struct nfs_fsinfo *info, |
9843 | struct nfs4_secinfo_flavors *flavors, bool use_integrity) | |
fca78d6d BS |
9844 | { |
9845 | struct nfs41_secinfo_no_name_args args = { | |
9846 | .style = SECINFO_STYLE_CURRENT_FH, | |
9847 | }; | |
9848 | struct nfs4_secinfo_res res = { | |
9849 | .flavors = flavors, | |
9850 | }; | |
9851 | struct rpc_message msg = { | |
9852 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SECINFO_NO_NAME], | |
9853 | .rpc_argp = &args, | |
9854 | .rpc_resp = &res, | |
9855 | }; | |
cc15e24a AS |
9856 | struct nfs4_call_sync_data data = { |
9857 | .seq_server = server, | |
9858 | .seq_args = &args.seq_args, | |
9859 | .seq_res = &res.seq_res, | |
9860 | }; | |
9861 | struct rpc_task_setup task_setup = { | |
9862 | .rpc_client = server->client, | |
9863 | .rpc_message = &msg, | |
9864 | .callback_ops = server->nfs_client->cl_mvops->call_sync_ops, | |
9865 | .callback_data = &data, | |
9866 | .flags = RPC_TASK_NO_ROUND_ROBIN, | |
9867 | }; | |
a52458b4 | 9868 | const struct cred *cred = NULL; |
b1b3e136 WAA |
9869 | int status; |
9870 | ||
9871 | if (use_integrity) { | |
48bb6ec1 | 9872 | task_setup.rpc_client = server->nfs_client->cl_rpcclient; |
cc15e24a | 9873 | |
7cb852df WAA |
9874 | cred = nfs4_get_clid_cred(server->nfs_client); |
9875 | msg.rpc_cred = cred; | |
b1b3e136 WAA |
9876 | } |
9877 | ||
9878 | dprintk("--> %s\n", __func__); | |
cc15e24a AS |
9879 | nfs4_init_sequence(&args.seq_args, &res.seq_res, 0, 0); |
9880 | status = nfs4_call_sync_custom(&task_setup); | |
b1b3e136 WAA |
9881 | dprintk("<-- %s status=%d\n", __func__, status); |
9882 | ||
a52458b4 | 9883 | put_cred(cred); |
b1b3e136 WAA |
9884 | |
9885 | return status; | |
fca78d6d BS |
9886 | } |
9887 | ||
9888 | static int | |
9889 | nfs41_proc_secinfo_no_name(struct nfs_server *server, struct nfs_fh *fhandle, | |
9890 | struct nfs_fsinfo *info, struct nfs4_secinfo_flavors *flavors) | |
9891 | { | |
0688e64b TM |
9892 | struct nfs4_exception exception = { |
9893 | .interruptible = true, | |
9894 | }; | |
fca78d6d BS |
9895 | int err; |
9896 | do { | |
b1b3e136 WAA |
9897 | /* first try using integrity protection */ |
9898 | err = -NFS4ERR_WRONGSEC; | |
9899 | ||
9900 | /* try to use integrity protection with machine cred */ | |
9901 | if (_nfs4_is_integrity_protected(server->nfs_client)) | |
9902 | err = _nfs41_proc_secinfo_no_name(server, fhandle, info, | |
9903 | flavors, true); | |
9904 | ||
9905 | /* | |
9906 | * if unable to use integrity protection, or SECINFO with | |
9907 | * integrity protection returns NFS4ERR_WRONGSEC (which is | |
9908 | * disallowed by spec, but exists in deployed servers) use | |
9909 | * the current filesystem's rpc_client and the user cred. | |
9910 | */ | |
9911 | if (err == -NFS4ERR_WRONGSEC) | |
9912 | err = _nfs41_proc_secinfo_no_name(server, fhandle, info, | |
9913 | flavors, false); | |
9914 | ||
fca78d6d BS |
9915 | switch (err) { |
9916 | case 0: | |
9917 | case -NFS4ERR_WRONGSEC: | |
78b19bae | 9918 | case -ENOTSUPP: |
05e9cfb4 | 9919 | goto out; |
fca78d6d BS |
9920 | default: |
9921 | err = nfs4_handle_exception(server, err, &exception); | |
9922 | } | |
9923 | } while (exception.retry); | |
05e9cfb4 | 9924 | out: |
fca78d6d BS |
9925 | return err; |
9926 | } | |
9927 | ||
9928 | static int | |
9929 | nfs41_find_root_sec(struct nfs_server *server, struct nfs_fh *fhandle, | |
9930 | struct nfs_fsinfo *info) | |
9931 | { | |
9932 | int err; | |
9933 | struct page *page; | |
367156d9 | 9934 | rpc_authflavor_t flavor = RPC_AUTH_MAXFLAVOR; |
fca78d6d | 9935 | struct nfs4_secinfo_flavors *flavors; |
58a8cf12 WAA |
9936 | struct nfs4_secinfo4 *secinfo; |
9937 | int i; | |
fca78d6d BS |
9938 | |
9939 | page = alloc_page(GFP_KERNEL); | |
9940 | if (!page) { | |
9941 | err = -ENOMEM; | |
9942 | goto out; | |
9943 | } | |
9944 | ||
9945 | flavors = page_address(page); | |
9946 | err = nfs41_proc_secinfo_no_name(server, fhandle, info, flavors); | |
9947 | ||
9948 | /* | |
9949 | * Fall back on "guess and check" method if | |
9950 | * the server doesn't support SECINFO_NO_NAME | |
9951 | */ | |
78b19bae | 9952 | if (err == -NFS4ERR_WRONGSEC || err == -ENOTSUPP) { |
fca78d6d BS |
9953 | err = nfs4_find_root_sec(server, fhandle, info); |
9954 | goto out_freepage; | |
9955 | } | |
9956 | if (err) | |
9957 | goto out_freepage; | |
9958 | ||
58a8cf12 WAA |
9959 | for (i = 0; i < flavors->num_flavors; i++) { |
9960 | secinfo = &flavors->flavors[i]; | |
9961 | ||
9962 | switch (secinfo->flavor) { | |
9963 | case RPC_AUTH_NULL: | |
9964 | case RPC_AUTH_UNIX: | |
9965 | case RPC_AUTH_GSS: | |
9966 | flavor = rpcauth_get_pseudoflavor(secinfo->flavor, | |
9967 | &secinfo->flavor_info); | |
9968 | break; | |
9969 | default: | |
9970 | flavor = RPC_AUTH_MAXFLAVOR; | |
9971 | break; | |
9972 | } | |
9973 | ||
4d4b69dd WAA |
9974 | if (!nfs_auth_info_match(&server->auth_info, flavor)) |
9975 | flavor = RPC_AUTH_MAXFLAVOR; | |
9976 | ||
58a8cf12 WAA |
9977 | if (flavor != RPC_AUTH_MAXFLAVOR) { |
9978 | err = nfs4_lookup_root_sec(server, fhandle, | |
9979 | info, flavor); | |
9980 | if (!err) | |
9981 | break; | |
9982 | } | |
9983 | } | |
9984 | ||
9985 | if (flavor == RPC_AUTH_MAXFLAVOR) | |
9986 | err = -EPERM; | |
fca78d6d BS |
9987 | |
9988 | out_freepage: | |
9989 | put_page(page); | |
9990 | if (err == -EACCES) | |
9991 | return -EPERM; | |
9992 | out: | |
9993 | return err; | |
9994 | } | |
1cab0652 | 9995 | |
ab7cb0df TM |
9996 | static int _nfs41_test_stateid(struct nfs_server *server, |
9997 | nfs4_stateid *stateid, | |
a52458b4 | 9998 | const struct cred *cred) |
7d974794 BS |
9999 | { |
10000 | int status; | |
10001 | struct nfs41_test_stateid_args args = { | |
1cab0652 | 10002 | .stateid = stateid, |
7d974794 BS |
10003 | }; |
10004 | struct nfs41_test_stateid_res res; | |
10005 | struct rpc_message msg = { | |
10006 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_TEST_STATEID], | |
10007 | .rpc_argp = &args, | |
10008 | .rpc_resp = &res, | |
ab7cb0df | 10009 | .rpc_cred = cred, |
7d974794 | 10010 | }; |
3787d506 WAA |
10011 | struct rpc_clnt *rpc_client = server->client; |
10012 | ||
10013 | nfs4_state_protect(server->nfs_client, NFS_SP4_MACH_CRED_STATEID, | |
10014 | &rpc_client, &msg); | |
1cab0652 | 10015 | |
38527b15 | 10016 | dprintk("NFS call test_stateid %p\n", stateid); |
fba83f34 | 10017 | nfs4_init_sequence(&args.seq_args, &res.seq_res, 0, 1); |
3787d506 | 10018 | status = nfs4_call_sync_sequence(rpc_client, server, &msg, |
8fe72bac | 10019 | &args.seq_args, &res.seq_res); |
38527b15 CL |
10020 | if (status != NFS_OK) { |
10021 | dprintk("NFS reply test_stateid: failed, %d\n", status); | |
377e507d | 10022 | return status; |
38527b15 CL |
10023 | } |
10024 | dprintk("NFS reply test_stateid: succeeded, %d\n", -res.status); | |
377e507d | 10025 | return -res.status; |
7d974794 BS |
10026 | } |
10027 | ||
43912bbb TM |
10028 | static void nfs4_handle_delay_or_session_error(struct nfs_server *server, |
10029 | int err, struct nfs4_exception *exception) | |
10030 | { | |
10031 | exception->retry = 0; | |
10032 | switch(err) { | |
10033 | case -NFS4ERR_DELAY: | |
76e8a1bd | 10034 | case -NFS4ERR_RETRY_UNCACHED_REP: |
43912bbb TM |
10035 | nfs4_handle_exception(server, err, exception); |
10036 | break; | |
10037 | case -NFS4ERR_BADSESSION: | |
10038 | case -NFS4ERR_BADSLOT: | |
10039 | case -NFS4ERR_BAD_HIGH_SLOT: | |
10040 | case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: | |
10041 | case -NFS4ERR_DEADSESSION: | |
10042 | nfs4_do_handle_exception(server, err, exception); | |
10043 | } | |
10044 | } | |
10045 | ||
38527b15 CL |
10046 | /** |
10047 | * nfs41_test_stateid - perform a TEST_STATEID operation | |
10048 | * | |
10049 | * @server: server / transport on which to perform the operation | |
10050 | * @stateid: state ID to test | |
ab7cb0df | 10051 | * @cred: credential |
38527b15 CL |
10052 | * |
10053 | * Returns NFS_OK if the server recognizes that "stateid" is valid. | |
10054 | * Otherwise a negative NFS4ERR value is returned if the operation | |
10055 | * failed or the state ID is not currently valid. | |
10056 | */ | |
ab7cb0df TM |
10057 | static int nfs41_test_stateid(struct nfs_server *server, |
10058 | nfs4_stateid *stateid, | |
a52458b4 | 10059 | const struct cred *cred) |
7d974794 | 10060 | { |
0688e64b TM |
10061 | struct nfs4_exception exception = { |
10062 | .interruptible = true, | |
10063 | }; | |
7d974794 BS |
10064 | int err; |
10065 | do { | |
ab7cb0df | 10066 | err = _nfs41_test_stateid(server, stateid, cred); |
43912bbb | 10067 | nfs4_handle_delay_or_session_error(server, err, &exception); |
7d974794 BS |
10068 | } while (exception.retry); |
10069 | return err; | |
10070 | } | |
9aeda35f | 10071 | |
7c1d5fae TM |
10072 | struct nfs_free_stateid_data { |
10073 | struct nfs_server *server; | |
10074 | struct nfs41_free_stateid_args args; | |
9aeda35f | 10075 | struct nfs41_free_stateid_res res; |
7c1d5fae TM |
10076 | }; |
10077 | ||
10078 | static void nfs41_free_stateid_prepare(struct rpc_task *task, void *calldata) | |
10079 | { | |
10080 | struct nfs_free_stateid_data *data = calldata; | |
7981c8a6 | 10081 | nfs4_setup_sequence(data->server->nfs_client, |
7c1d5fae TM |
10082 | &data->args.seq_args, |
10083 | &data->res.seq_res, | |
10084 | task); | |
10085 | } | |
10086 | ||
10087 | static void nfs41_free_stateid_done(struct rpc_task *task, void *calldata) | |
10088 | { | |
10089 | struct nfs_free_stateid_data *data = calldata; | |
10090 | ||
10091 | nfs41_sequence_done(task, &data->res.seq_res); | |
10092 | ||
10093 | switch (task->tk_status) { | |
10094 | case -NFS4ERR_DELAY: | |
8478eaa1 | 10095 | if (nfs4_async_handle_error(task, data->server, NULL, NULL) == -EAGAIN) |
7c1d5fae TM |
10096 | rpc_restart_call_prepare(task); |
10097 | } | |
10098 | } | |
10099 | ||
10100 | static void nfs41_free_stateid_release(void *calldata) | |
10101 | { | |
10102 | kfree(calldata); | |
10103 | } | |
10104 | ||
17f26b12 | 10105 | static const struct rpc_call_ops nfs41_free_stateid_ops = { |
7c1d5fae TM |
10106 | .rpc_call_prepare = nfs41_free_stateid_prepare, |
10107 | .rpc_call_done = nfs41_free_stateid_done, | |
10108 | .rpc_release = nfs41_free_stateid_release, | |
10109 | }; | |
10110 | ||
2f261020 AS |
10111 | /** |
10112 | * nfs41_free_stateid - perform a FREE_STATEID operation | |
10113 | * | |
10114 | * @server: server / transport on which to perform the operation | |
10115 | * @stateid: state ID to release | |
10116 | * @cred: credential | |
302fad7b | 10117 | * @privileged: set to true if this call needs to be privileged |
2f261020 AS |
10118 | * |
10119 | * Note: this function is always asynchronous. | |
10120 | */ | |
10121 | static int nfs41_free_stateid(struct nfs_server *server, | |
f0b0bf88 | 10122 | const nfs4_stateid *stateid, |
a52458b4 | 10123 | const struct cred *cred, |
7c1d5fae TM |
10124 | bool privileged) |
10125 | { | |
9aeda35f BS |
10126 | struct rpc_message msg = { |
10127 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FREE_STATEID], | |
ab7cb0df | 10128 | .rpc_cred = cred, |
9aeda35f | 10129 | }; |
7c1d5fae TM |
10130 | struct rpc_task_setup task_setup = { |
10131 | .rpc_client = server->client, | |
10132 | .rpc_message = &msg, | |
10133 | .callback_ops = &nfs41_free_stateid_ops, | |
10134 | .flags = RPC_TASK_ASYNC, | |
10135 | }; | |
10136 | struct nfs_free_stateid_data *data; | |
2f261020 | 10137 | struct rpc_task *task; |
9aeda35f | 10138 | |
3787d506 WAA |
10139 | nfs4_state_protect(server->nfs_client, NFS_SP4_MACH_CRED_STATEID, |
10140 | &task_setup.rpc_client, &msg); | |
10141 | ||
38527b15 | 10142 | dprintk("NFS call free_stateid %p\n", stateid); |
7c1d5fae TM |
10143 | data = kmalloc(sizeof(*data), GFP_NOFS); |
10144 | if (!data) | |
2f261020 | 10145 | return -ENOMEM; |
7c1d5fae TM |
10146 | data->server = server; |
10147 | nfs4_stateid_copy(&data->args.stateid, stateid); | |
10148 | ||
10149 | task_setup.callback_data = data; | |
10150 | ||
10151 | msg.rpc_argp = &data->args; | |
10152 | msg.rpc_resp = &data->res; | |
fba83f34 | 10153 | nfs4_init_sequence(&data->args.seq_args, &data->res.seq_res, 1, privileged); |
2f261020 | 10154 | task = rpc_run_task(&task_setup); |
7c1d5fae TM |
10155 | if (IS_ERR(task)) |
10156 | return PTR_ERR(task); | |
7c1d5fae | 10157 | rpc_put_task(task); |
f0b0bf88 | 10158 | return 0; |
9aeda35f | 10159 | } |
36281caa | 10160 | |
f1cdae87 JL |
10161 | static void |
10162 | nfs41_free_lock_state(struct nfs_server *server, struct nfs4_lock_state *lsp) | |
c8b2d0bf | 10163 | { |
a52458b4 | 10164 | const struct cred *cred = lsp->ls_state->owner->so_cred; |
c8b2d0bf | 10165 | |
f0b0bf88 | 10166 | nfs41_free_stateid(server, &lsp->ls_stateid, cred, false); |
c8b2d0bf | 10167 | nfs4_free_lock_state(server, lsp); |
c8b2d0bf TM |
10168 | } |
10169 | ||
36281caa TM |
10170 | static bool nfs41_match_stateid(const nfs4_stateid *s1, |
10171 | const nfs4_stateid *s2) | |
10172 | { | |
93b717fd TM |
10173 | if (s1->type != s2->type) |
10174 | return false; | |
10175 | ||
2d2f24ad | 10176 | if (memcmp(s1->other, s2->other, sizeof(s1->other)) != 0) |
36281caa TM |
10177 | return false; |
10178 | ||
2d2f24ad | 10179 | if (s1->seqid == s2->seqid) |
36281caa | 10180 | return true; |
36281caa | 10181 | |
045c5519 | 10182 | return s1->seqid == 0 || s2->seqid == 0; |
36281caa TM |
10183 | } |
10184 | ||
557134a3 AA |
10185 | #endif /* CONFIG_NFS_V4_1 */ |
10186 | ||
36281caa TM |
10187 | static bool nfs4_match_stateid(const nfs4_stateid *s1, |
10188 | const nfs4_stateid *s2) | |
10189 | { | |
f597c537 | 10190 | return nfs4_stateid_match(s1, s2); |
36281caa TM |
10191 | } |
10192 | ||
10193 | ||
17280175 | 10194 | static const struct nfs4_state_recovery_ops nfs40_reboot_recovery_ops = { |
7eff03ae | 10195 | .owner_flag_bit = NFS_OWNER_RECLAIM_REBOOT, |
b79a4a1b | 10196 | .state_flag_bit = NFS_STATE_RECLAIM_REBOOT, |
1da177e4 LT |
10197 | .recover_open = nfs4_open_reclaim, |
10198 | .recover_lock = nfs4_lock_reclaim, | |
591d71cb | 10199 | .establish_clid = nfs4_init_clientid, |
05f4c350 | 10200 | .detect_trunking = nfs40_discover_server_trunking, |
1da177e4 LT |
10201 | }; |
10202 | ||
591d71cb | 10203 | #if defined(CONFIG_NFS_V4_1) |
17280175 | 10204 | static const struct nfs4_state_recovery_ops nfs41_reboot_recovery_ops = { |
591d71cb AA |
10205 | .owner_flag_bit = NFS_OWNER_RECLAIM_REBOOT, |
10206 | .state_flag_bit = NFS_STATE_RECLAIM_REBOOT, | |
10207 | .recover_open = nfs4_open_reclaim, | |
10208 | .recover_lock = nfs4_lock_reclaim, | |
4d643d1d | 10209 | .establish_clid = nfs41_init_clientid, |
fce5c838 | 10210 | .reclaim_complete = nfs41_proc_reclaim_complete, |
05f4c350 | 10211 | .detect_trunking = nfs41_discover_server_trunking, |
591d71cb AA |
10212 | }; |
10213 | #endif /* CONFIG_NFS_V4_1 */ | |
10214 | ||
17280175 | 10215 | static const struct nfs4_state_recovery_ops nfs40_nograce_recovery_ops = { |
591d71cb AA |
10216 | .owner_flag_bit = NFS_OWNER_RECLAIM_NOGRACE, |
10217 | .state_flag_bit = NFS_STATE_RECLAIM_NOGRACE, | |
4dfd4f7a | 10218 | .recover_open = nfs40_open_expired, |
591d71cb AA |
10219 | .recover_lock = nfs4_lock_expired, |
10220 | .establish_clid = nfs4_init_clientid, | |
10221 | }; | |
10222 | ||
10223 | #if defined(CONFIG_NFS_V4_1) | |
17280175 | 10224 | static const struct nfs4_state_recovery_ops nfs41_nograce_recovery_ops = { |
7eff03ae | 10225 | .owner_flag_bit = NFS_OWNER_RECLAIM_NOGRACE, |
b79a4a1b | 10226 | .state_flag_bit = NFS_STATE_RECLAIM_NOGRACE, |
f062eb6c BS |
10227 | .recover_open = nfs41_open_expired, |
10228 | .recover_lock = nfs41_lock_expired, | |
4d643d1d | 10229 | .establish_clid = nfs41_init_clientid, |
1da177e4 | 10230 | }; |
591d71cb | 10231 | #endif /* CONFIG_NFS_V4_1 */ |
1da177e4 | 10232 | |
17280175 | 10233 | static const struct nfs4_state_maintenance_ops nfs40_state_renewal_ops = { |
29fba38b | 10234 | .sched_state_renewal = nfs4_proc_async_renew, |
f15e1e8b | 10235 | .get_state_renewal_cred = nfs4_get_renew_cred, |
8e69514f | 10236 | .renew_lease = nfs4_proc_renew, |
29fba38b BH |
10237 | }; |
10238 | ||
10239 | #if defined(CONFIG_NFS_V4_1) | |
17280175 | 10240 | static const struct nfs4_state_maintenance_ops nfs41_state_renewal_ops = { |
29fba38b | 10241 | .sched_state_renewal = nfs41_proc_async_sequence, |
f15e1e8b | 10242 | .get_state_renewal_cred = nfs4_get_machine_cred, |
8e69514f | 10243 | .renew_lease = nfs4_proc_sequence, |
29fba38b BH |
10244 | }; |
10245 | #endif | |
10246 | ||
ec011fe8 | 10247 | static const struct nfs4_mig_recovery_ops nfs40_mig_recovery_ops = { |
b03d735b | 10248 | .get_locations = _nfs40_proc_get_locations, |
44c99933 | 10249 | .fsid_present = _nfs40_proc_fsid_present, |
ec011fe8 CL |
10250 | }; |
10251 | ||
10252 | #if defined(CONFIG_NFS_V4_1) | |
10253 | static const struct nfs4_mig_recovery_ops nfs41_mig_recovery_ops = { | |
b03d735b | 10254 | .get_locations = _nfs41_proc_get_locations, |
44c99933 | 10255 | .fsid_present = _nfs41_proc_fsid_present, |
ec011fe8 CL |
10256 | }; |
10257 | #endif /* CONFIG_NFS_V4_1 */ | |
10258 | ||
97dc1359 TM |
10259 | static const struct nfs4_minor_version_ops nfs_v4_0_minor_ops = { |
10260 | .minor_version = 0, | |
39c6daae TM |
10261 | .init_caps = NFS_CAP_READDIRPLUS |
10262 | | NFS_CAP_ATOMIC_OPEN | |
39c6daae | 10263 | | NFS_CAP_POSIX_LOCK, |
abf79bb3 CL |
10264 | .init_client = nfs40_init_client, |
10265 | .shutdown_client = nfs40_shutdown_client, | |
36281caa | 10266 | .match_stateid = nfs4_match_stateid, |
fca78d6d | 10267 | .find_root_sec = nfs4_find_root_sec, |
c8b2d0bf | 10268 | .free_lock_state = nfs4_release_lockowner, |
45870d69 | 10269 | .test_and_free_expired = nfs40_test_and_free_expired_stateid, |
63f5f796 | 10270 | .alloc_seqid = nfs_alloc_seqid, |
9915ea7e | 10271 | .call_sync_ops = &nfs40_call_sync_ops, |
c48f4f35 TM |
10272 | .reboot_recovery_ops = &nfs40_reboot_recovery_ops, |
10273 | .nograce_recovery_ops = &nfs40_nograce_recovery_ops, | |
10274 | .state_renewal_ops = &nfs40_state_renewal_ops, | |
ec011fe8 | 10275 | .mig_recovery_ops = &nfs40_mig_recovery_ops, |
97dc1359 TM |
10276 | }; |
10277 | ||
10278 | #if defined(CONFIG_NFS_V4_1) | |
63f5f796 TM |
10279 | static struct nfs_seqid * |
10280 | nfs_alloc_no_seqid(struct nfs_seqid_counter *arg1, gfp_t arg2) | |
10281 | { | |
10282 | return NULL; | |
10283 | } | |
10284 | ||
97dc1359 TM |
10285 | static const struct nfs4_minor_version_ops nfs_v4_1_minor_ops = { |
10286 | .minor_version = 1, | |
39c6daae TM |
10287 | .init_caps = NFS_CAP_READDIRPLUS |
10288 | | NFS_CAP_ATOMIC_OPEN | |
3b66486c | 10289 | | NFS_CAP_POSIX_LOCK |
49f9a0fa | 10290 | | NFS_CAP_STATEID_NFSV41 |
6e01260c FI |
10291 | | NFS_CAP_ATOMIC_OPEN_V1 |
10292 | | NFS_CAP_LGOPEN, | |
abf79bb3 CL |
10293 | .init_client = nfs41_init_client, |
10294 | .shutdown_client = nfs41_shutdown_client, | |
36281caa | 10295 | .match_stateid = nfs41_match_stateid, |
fca78d6d | 10296 | .find_root_sec = nfs41_find_root_sec, |
c8b2d0bf | 10297 | .free_lock_state = nfs41_free_lock_state, |
45870d69 | 10298 | .test_and_free_expired = nfs41_test_and_free_expired_stateid, |
63f5f796 | 10299 | .alloc_seqid = nfs_alloc_no_seqid, |
04fa2c6b | 10300 | .session_trunk = nfs4_test_session_trunk, |
9915ea7e | 10301 | .call_sync_ops = &nfs41_call_sync_ops, |
c48f4f35 TM |
10302 | .reboot_recovery_ops = &nfs41_reboot_recovery_ops, |
10303 | .nograce_recovery_ops = &nfs41_nograce_recovery_ops, | |
10304 | .state_renewal_ops = &nfs41_state_renewal_ops, | |
ec011fe8 | 10305 | .mig_recovery_ops = &nfs41_mig_recovery_ops, |
97dc1359 TM |
10306 | }; |
10307 | #endif | |
10308 | ||
42c2c424 SD |
10309 | #if defined(CONFIG_NFS_V4_2) |
10310 | static const struct nfs4_minor_version_ops nfs_v4_2_minor_ops = { | |
10311 | .minor_version = 2, | |
7017310a BS |
10312 | .init_caps = NFS_CAP_READDIRPLUS |
10313 | | NFS_CAP_ATOMIC_OPEN | |
7017310a BS |
10314 | | NFS_CAP_POSIX_LOCK |
10315 | | NFS_CAP_STATEID_NFSV41 | |
e983120e | 10316 | | NFS_CAP_ATOMIC_OPEN_V1 |
6e01260c | 10317 | | NFS_CAP_LGOPEN |
f4ac1674 | 10318 | | NFS_CAP_ALLOCATE |
2e72448b | 10319 | | NFS_CAP_COPY |
cb95deea | 10320 | | NFS_CAP_OFFLOAD_CANCEL |
0491567b | 10321 | | NFS_CAP_COPY_NOTIFY |
624bd5b7 | 10322 | | NFS_CAP_DEALLOCATE |
6c5a0d89 | 10323 | | NFS_CAP_SEEK |
e5341f3a | 10324 | | NFS_CAP_LAYOUTSTATS |
3eb86093 | 10325 | | NFS_CAP_CLONE |
c5675526 AS |
10326 | | NFS_CAP_LAYOUTERROR |
10327 | | NFS_CAP_READ_PLUS, | |
abf79bb3 CL |
10328 | .init_client = nfs41_init_client, |
10329 | .shutdown_client = nfs41_shutdown_client, | |
42c2c424 SD |
10330 | .match_stateid = nfs41_match_stateid, |
10331 | .find_root_sec = nfs41_find_root_sec, | |
7017310a | 10332 | .free_lock_state = nfs41_free_lock_state, |
9915ea7e | 10333 | .call_sync_ops = &nfs41_call_sync_ops, |
45870d69 | 10334 | .test_and_free_expired = nfs41_test_and_free_expired_stateid, |
63f5f796 | 10335 | .alloc_seqid = nfs_alloc_no_seqid, |
04fa2c6b | 10336 | .session_trunk = nfs4_test_session_trunk, |
42c2c424 SD |
10337 | .reboot_recovery_ops = &nfs41_reboot_recovery_ops, |
10338 | .nograce_recovery_ops = &nfs41_nograce_recovery_ops, | |
10339 | .state_renewal_ops = &nfs41_state_renewal_ops, | |
18e3b739 | 10340 | .mig_recovery_ops = &nfs41_mig_recovery_ops, |
42c2c424 SD |
10341 | }; |
10342 | #endif | |
10343 | ||
97dc1359 TM |
10344 | const struct nfs4_minor_version_ops *nfs_v4_minor_ops[] = { |
10345 | [0] = &nfs_v4_0_minor_ops, | |
10346 | #if defined(CONFIG_NFS_V4_1) | |
10347 | [1] = &nfs_v4_1_minor_ops, | |
10348 | #endif | |
42c2c424 SD |
10349 | #if defined(CONFIG_NFS_V4_2) |
10350 | [2] = &nfs_v4_2_minor_ops, | |
10351 | #endif | |
97dc1359 TM |
10352 | }; |
10353 | ||
13997823 | 10354 | static ssize_t nfs4_listxattr(struct dentry *dentry, char *list, size_t size) |
c4803c49 | 10355 | { |
012a211a | 10356 | ssize_t error, error2, error3; |
c4803c49 AG |
10357 | |
10358 | error = generic_listxattr(dentry, list, size); | |
10359 | if (error < 0) | |
10360 | return error; | |
10361 | if (list) { | |
10362 | list += error; | |
10363 | size -= error; | |
10364 | } | |
10365 | ||
10366 | error2 = nfs4_listxattr_nfs4_label(d_inode(dentry), list, size); | |
10367 | if (error2 < 0) | |
10368 | return error2; | |
012a211a FL |
10369 | |
10370 | if (list) { | |
10371 | list += error2; | |
10372 | size -= error2; | |
10373 | } | |
10374 | ||
10375 | error3 = nfs4_listxattr_nfs4_user(d_inode(dentry), list, size); | |
10376 | if (error3 < 0) | |
10377 | return error3; | |
10378 | ||
10379 | return error + error2 + error3; | |
c4803c49 AG |
10380 | } |
10381 | ||
17f26b12 | 10382 | static const struct inode_operations nfs4_dir_inode_operations = { |
73a79706 BS |
10383 | .create = nfs_create, |
10384 | .lookup = nfs_lookup, | |
10385 | .atomic_open = nfs_atomic_open, | |
10386 | .link = nfs_link, | |
10387 | .unlink = nfs_unlink, | |
10388 | .symlink = nfs_symlink, | |
10389 | .mkdir = nfs_mkdir, | |
10390 | .rmdir = nfs_rmdir, | |
10391 | .mknod = nfs_mknod, | |
10392 | .rename = nfs_rename, | |
10393 | .permission = nfs_permission, | |
10394 | .getattr = nfs_getattr, | |
10395 | .setattr = nfs_setattr, | |
c4803c49 | 10396 | .listxattr = nfs4_listxattr, |
73a79706 BS |
10397 | }; |
10398 | ||
92e1d5be | 10399 | static const struct inode_operations nfs4_file_inode_operations = { |
6b3b5496 BF |
10400 | .permission = nfs_permission, |
10401 | .getattr = nfs_getattr, | |
10402 | .setattr = nfs_setattr, | |
c4803c49 | 10403 | .listxattr = nfs4_listxattr, |
6b3b5496 BF |
10404 | }; |
10405 | ||
509de811 | 10406 | const struct nfs_rpc_ops nfs_v4_clientops = { |
1da177e4 LT |
10407 | .version = 4, /* protocol version */ |
10408 | .dentry_ops = &nfs4_dentry_operations, | |
10409 | .dir_inode_ops = &nfs4_dir_inode_operations, | |
6b3b5496 | 10410 | .file_inode_ops = &nfs4_file_inode_operations, |
1788ea6e | 10411 | .file_ops = &nfs4_file_operations, |
1da177e4 | 10412 | .getroot = nfs4_proc_get_root, |
281cad46 | 10413 | .submount = nfs4_submount, |
f2aedb71 | 10414 | .try_get_tree = nfs4_try_get_tree, |
1da177e4 LT |
10415 | .getattr = nfs4_proc_getattr, |
10416 | .setattr = nfs4_proc_setattr, | |
10417 | .lookup = nfs4_proc_lookup, | |
5b5faaf6 | 10418 | .lookupp = nfs4_proc_lookupp, |
1da177e4 LT |
10419 | .access = nfs4_proc_access, |
10420 | .readlink = nfs4_proc_readlink, | |
1da177e4 LT |
10421 | .create = nfs4_proc_create, |
10422 | .remove = nfs4_proc_remove, | |
10423 | .unlink_setup = nfs4_proc_unlink_setup, | |
34e137cc | 10424 | .unlink_rpc_prepare = nfs4_proc_unlink_rpc_prepare, |
1da177e4 | 10425 | .unlink_done = nfs4_proc_unlink_done, |
d3d4152a | 10426 | .rename_setup = nfs4_proc_rename_setup, |
c6bfa1a1 | 10427 | .rename_rpc_prepare = nfs4_proc_rename_rpc_prepare, |
d3d4152a | 10428 | .rename_done = nfs4_proc_rename_done, |
1da177e4 LT |
10429 | .link = nfs4_proc_link, |
10430 | .symlink = nfs4_proc_symlink, | |
10431 | .mkdir = nfs4_proc_mkdir, | |
912678db | 10432 | .rmdir = nfs4_proc_rmdir, |
1da177e4 LT |
10433 | .readdir = nfs4_proc_readdir, |
10434 | .mknod = nfs4_proc_mknod, | |
10435 | .statfs = nfs4_proc_statfs, | |
10436 | .fsinfo = nfs4_proc_fsinfo, | |
10437 | .pathconf = nfs4_proc_pathconf, | |
e9326dca | 10438 | .set_capabilities = nfs4_server_capabilities, |
1da177e4 | 10439 | .decode_dirent = nfs4_decode_dirent, |
a4cdda59 | 10440 | .pgio_rpc_prepare = nfs4_proc_pgio_rpc_prepare, |
1da177e4 | 10441 | .read_setup = nfs4_proc_read_setup, |
ec06c096 | 10442 | .read_done = nfs4_read_done, |
1da177e4 | 10443 | .write_setup = nfs4_proc_write_setup, |
788e7a89 | 10444 | .write_done = nfs4_write_done, |
1da177e4 | 10445 | .commit_setup = nfs4_proc_commit_setup, |
0b7c0153 | 10446 | .commit_rpc_prepare = nfs4_proc_commit_rpc_prepare, |
788e7a89 | 10447 | .commit_done = nfs4_commit_done, |
1da177e4 | 10448 | .lock = nfs4_proc_lock, |
e50a1c2e | 10449 | .clear_acl_cache = nfs4_zap_acl_attr, |
7fe5c398 | 10450 | .close_context = nfs4_close_context, |
2b484297 | 10451 | .open_context = nfs4_atomic_open, |
011e2a7f | 10452 | .have_delegation = nfs4_have_delegation, |
6663ee7f | 10453 | .alloc_client = nfs4_alloc_client, |
45a52a02 | 10454 | .init_client = nfs4_init_client, |
cdb7eced | 10455 | .free_client = nfs4_free_client, |
1179acc6 BS |
10456 | .create_server = nfs4_create_server, |
10457 | .clone_server = nfs_clone_server, | |
1da177e4 LT |
10458 | }; |
10459 | ||
64c2ce8b | 10460 | static const struct xattr_handler nfs4_xattr_nfs4_acl_handler = { |
98e9cb57 | 10461 | .name = XATTR_NAME_NFSV4_ACL, |
64c2ce8b AK |
10462 | .list = nfs4_xattr_list_nfs4_acl, |
10463 | .get = nfs4_xattr_get_nfs4_acl, | |
10464 | .set = nfs4_xattr_set_nfs4_acl, | |
10465 | }; | |
10466 | ||
012a211a FL |
10467 | #ifdef CONFIG_NFS_V4_2 |
10468 | static const struct xattr_handler nfs4_xattr_nfs4_user_handler = { | |
10469 | .prefix = XATTR_USER_PREFIX, | |
10470 | .get = nfs4_xattr_get_nfs4_user, | |
10471 | .set = nfs4_xattr_set_nfs4_user, | |
10472 | }; | |
10473 | #endif | |
10474 | ||
64c2ce8b AK |
10475 | const struct xattr_handler *nfs4_xattr_handlers[] = { |
10476 | &nfs4_xattr_nfs4_acl_handler, | |
c9bccef6 DQ |
10477 | #ifdef CONFIG_NFS_V4_SECURITY_LABEL |
10478 | &nfs4_xattr_nfs4_label_handler, | |
012a211a FL |
10479 | #endif |
10480 | #ifdef CONFIG_NFS_V4_2 | |
10481 | &nfs4_xattr_nfs4_user_handler, | |
c9bccef6 | 10482 | #endif |
64c2ce8b AK |
10483 | NULL |
10484 | }; |