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> | |
39 | #include <linux/utsname.h> | |
40 | #include <linux/delay.h> | |
41 | #include <linux/errno.h> | |
42 | #include <linux/string.h> | |
43 | #include <linux/sunrpc/clnt.h> | |
44 | #include <linux/nfs.h> | |
45 | #include <linux/nfs4.h> | |
46 | #include <linux/nfs_fs.h> | |
47 | #include <linux/nfs_page.h> | |
48 | #include <linux/smp_lock.h> | |
49 | #include <linux/namei.h> | |
02a913a7 | 50 | #include <linux/mount.h> |
1da177e4 | 51 | |
4ce79717 | 52 | #include "nfs4_fs.h" |
1da177e4 | 53 | #include "delegation.h" |
101070ca | 54 | #include "internal.h" |
006ea73e | 55 | #include "iostat.h" |
1da177e4 LT |
56 | |
57 | #define NFSDBG_FACILITY NFSDBG_PROC | |
58 | ||
2066fe89 | 59 | #define NFS4_POLL_RETRY_MIN (HZ/10) |
1da177e4 LT |
60 | #define NFS4_POLL_RETRY_MAX (15*HZ) |
61 | ||
cdd4e68b | 62 | struct nfs4_opendata; |
864472e9 | 63 | static int _nfs4_proc_open(struct nfs4_opendata *data); |
1da177e4 | 64 | static int nfs4_do_fsinfo(struct nfs_server *, struct nfs_fh *, struct nfs_fsinfo *); |
faf5f49c | 65 | static int nfs4_async_handle_error(struct rpc_task *, const struct nfs_server *); |
faf5f49c | 66 | static int nfs4_handle_exception(const struct nfs_server *server, int errorcode, struct nfs4_exception *exception); |
adfa6f98 | 67 | static int nfs4_wait_clnt_recover(struct rpc_clnt *clnt, struct nfs_client *clp); |
9936781d TM |
68 | static int _nfs4_proc_lookup(struct inode *dir, const struct qstr *name, struct nfs_fh *fhandle, struct nfs_fattr *fattr); |
69 | static int _nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fattr *fattr); | |
1da177e4 | 70 | |
1da177e4 LT |
71 | /* Prevent leaks of NFSv4 errors into userland */ |
72 | int nfs4_map_errors(int err) | |
73 | { | |
74 | if (err < -1000) { | |
75 | dprintk("%s could not handle NFSv4 error %d\n", | |
3110ff80 | 76 | __func__, -err); |
1da177e4 LT |
77 | return -EIO; |
78 | } | |
79 | return err; | |
80 | } | |
81 | ||
82 | /* | |
83 | * This is our standard bitmap for GETATTR requests. | |
84 | */ | |
85 | const u32 nfs4_fattr_bitmap[2] = { | |
86 | FATTR4_WORD0_TYPE | |
87 | | FATTR4_WORD0_CHANGE | |
88 | | FATTR4_WORD0_SIZE | |
89 | | FATTR4_WORD0_FSID | |
90 | | FATTR4_WORD0_FILEID, | |
91 | FATTR4_WORD1_MODE | |
92 | | FATTR4_WORD1_NUMLINKS | |
93 | | FATTR4_WORD1_OWNER | |
94 | | FATTR4_WORD1_OWNER_GROUP | |
95 | | FATTR4_WORD1_RAWDEV | |
96 | | FATTR4_WORD1_SPACE_USED | |
97 | | FATTR4_WORD1_TIME_ACCESS | |
98 | | FATTR4_WORD1_TIME_METADATA | |
99 | | FATTR4_WORD1_TIME_MODIFY | |
100 | }; | |
101 | ||
102 | const u32 nfs4_statfs_bitmap[2] = { | |
103 | FATTR4_WORD0_FILES_AVAIL | |
104 | | FATTR4_WORD0_FILES_FREE | |
105 | | FATTR4_WORD0_FILES_TOTAL, | |
106 | FATTR4_WORD1_SPACE_AVAIL | |
107 | | FATTR4_WORD1_SPACE_FREE | |
108 | | FATTR4_WORD1_SPACE_TOTAL | |
109 | }; | |
110 | ||
4ce79717 | 111 | const u32 nfs4_pathconf_bitmap[2] = { |
1da177e4 LT |
112 | FATTR4_WORD0_MAXLINK |
113 | | FATTR4_WORD0_MAXNAME, | |
114 | 0 | |
115 | }; | |
116 | ||
117 | const u32 nfs4_fsinfo_bitmap[2] = { FATTR4_WORD0_MAXFILESIZE | |
118 | | FATTR4_WORD0_MAXREAD | |
119 | | FATTR4_WORD0_MAXWRITE | |
120 | | FATTR4_WORD0_LEASE_TIME, | |
121 | 0 | |
122 | }; | |
123 | ||
830b8e33 MN |
124 | const u32 nfs4_fs_locations_bitmap[2] = { |
125 | FATTR4_WORD0_TYPE | |
126 | | FATTR4_WORD0_CHANGE | |
127 | | FATTR4_WORD0_SIZE | |
128 | | FATTR4_WORD0_FSID | |
129 | | FATTR4_WORD0_FILEID | |
130 | | FATTR4_WORD0_FS_LOCATIONS, | |
131 | FATTR4_WORD1_MODE | |
132 | | FATTR4_WORD1_NUMLINKS | |
133 | | FATTR4_WORD1_OWNER | |
134 | | FATTR4_WORD1_OWNER_GROUP | |
135 | | FATTR4_WORD1_RAWDEV | |
136 | | FATTR4_WORD1_SPACE_USED | |
137 | | FATTR4_WORD1_TIME_ACCESS | |
138 | | FATTR4_WORD1_TIME_METADATA | |
139 | | FATTR4_WORD1_TIME_MODIFY | |
140 | | FATTR4_WORD1_MOUNTED_ON_FILEID | |
141 | }; | |
142 | ||
bc4785cd | 143 | static void nfs4_setup_readdir(u64 cookie, __be32 *verifier, struct dentry *dentry, |
1da177e4 LT |
144 | struct nfs4_readdir_arg *readdir) |
145 | { | |
0dbb4c67 | 146 | __be32 *start, *p; |
1da177e4 LT |
147 | |
148 | BUG_ON(readdir->count < 80); | |
149 | if (cookie > 2) { | |
b7ef1956 | 150 | readdir->cookie = cookie; |
1da177e4 LT |
151 | memcpy(&readdir->verifier, verifier, sizeof(readdir->verifier)); |
152 | return; | |
153 | } | |
154 | ||
155 | readdir->cookie = 0; | |
156 | memset(&readdir->verifier, 0, sizeof(readdir->verifier)); | |
157 | if (cookie == 2) | |
158 | return; | |
159 | ||
160 | /* | |
161 | * NFSv4 servers do not return entries for '.' and '..' | |
162 | * Therefore, we fake these entries here. We let '.' | |
163 | * have cookie 0 and '..' have cookie 1. Note that | |
164 | * when talking to the server, we always send cookie 0 | |
165 | * instead of 1 or 2. | |
166 | */ | |
0dbb4c67 | 167 | start = p = kmap_atomic(*readdir->pages, KM_USER0); |
1da177e4 LT |
168 | |
169 | if (cookie == 0) { | |
170 | *p++ = xdr_one; /* next */ | |
171 | *p++ = xdr_zero; /* cookie, first word */ | |
172 | *p++ = xdr_one; /* cookie, second word */ | |
173 | *p++ = xdr_one; /* entry len */ | |
174 | memcpy(p, ".\0\0\0", 4); /* entry */ | |
175 | p++; | |
176 | *p++ = xdr_one; /* bitmap length */ | |
177 | *p++ = htonl(FATTR4_WORD0_FILEID); /* bitmap */ | |
178 | *p++ = htonl(8); /* attribute buffer length */ | |
4e769b93 | 179 | p = xdr_encode_hyper(p, NFS_FILEID(dentry->d_inode)); |
1da177e4 LT |
180 | } |
181 | ||
182 | *p++ = xdr_one; /* next */ | |
183 | *p++ = xdr_zero; /* cookie, first word */ | |
184 | *p++ = xdr_two; /* cookie, second word */ | |
185 | *p++ = xdr_two; /* entry len */ | |
186 | memcpy(p, "..\0\0", 4); /* entry */ | |
187 | p++; | |
188 | *p++ = xdr_one; /* bitmap length */ | |
189 | *p++ = htonl(FATTR4_WORD0_FILEID); /* bitmap */ | |
190 | *p++ = htonl(8); /* attribute buffer length */ | |
4e769b93 | 191 | p = xdr_encode_hyper(p, NFS_FILEID(dentry->d_parent->d_inode)); |
1da177e4 LT |
192 | |
193 | readdir->pgbase = (char *)p - (char *)start; | |
194 | readdir->count -= readdir->pgbase; | |
195 | kunmap_atomic(start, KM_USER0); | |
196 | } | |
197 | ||
26e976a8 | 198 | static void renew_lease(const struct nfs_server *server, unsigned long timestamp) |
1da177e4 | 199 | { |
7539bbab | 200 | struct nfs_client *clp = server->nfs_client; |
1da177e4 LT |
201 | spin_lock(&clp->cl_lock); |
202 | if (time_before(clp->cl_last_renewal,timestamp)) | |
203 | clp->cl_last_renewal = timestamp; | |
204 | spin_unlock(&clp->cl_lock); | |
205 | } | |
206 | ||
38478b24 | 207 | static void update_changeattr(struct inode *dir, struct nfs4_change_info *cinfo) |
1da177e4 | 208 | { |
38478b24 | 209 | struct nfs_inode *nfsi = NFS_I(dir); |
1da177e4 | 210 | |
38478b24 | 211 | spin_lock(&dir->i_lock); |
40d24704 TM |
212 | nfsi->cache_validity |= NFS_INO_INVALID_ATTR|NFS_INO_REVAL_PAGECACHE|NFS_INO_INVALID_DATA; |
213 | if (!cinfo->atomic || cinfo->before != nfsi->change_attr) | |
bfc69a45 | 214 | nfs_force_lookup_revalidate(dir); |
40d24704 | 215 | nfsi->change_attr = cinfo->after; |
38478b24 | 216 | spin_unlock(&dir->i_lock); |
1da177e4 LT |
217 | } |
218 | ||
e56e0b78 | 219 | struct nfs4_opendata { |
c6d00e63 | 220 | struct kref kref; |
e56e0b78 TM |
221 | struct nfs_openargs o_arg; |
222 | struct nfs_openres o_res; | |
cdd4e68b TM |
223 | struct nfs_open_confirmargs c_arg; |
224 | struct nfs_open_confirmres c_res; | |
e56e0b78 TM |
225 | struct nfs_fattr f_attr; |
226 | struct nfs_fattr dir_attr; | |
ad389da7 | 227 | struct path path; |
e56e0b78 TM |
228 | struct dentry *dir; |
229 | struct nfs4_state_owner *owner; | |
aac00a8d | 230 | struct nfs4_state *state; |
e56e0b78 | 231 | struct iattr attrs; |
26e976a8 | 232 | unsigned long timestamp; |
3e309914 | 233 | unsigned int rpc_done : 1; |
24ac23ab TM |
234 | int rpc_status; |
235 | int cancelled; | |
e56e0b78 TM |
236 | }; |
237 | ||
2ced46c2 TM |
238 | |
239 | static void nfs4_init_opendata_res(struct nfs4_opendata *p) | |
240 | { | |
241 | p->o_res.f_attr = &p->f_attr; | |
242 | p->o_res.dir_attr = &p->dir_attr; | |
c1d51931 TM |
243 | p->o_res.seqid = p->o_arg.seqid; |
244 | p->c_res.seqid = p->c_arg.seqid; | |
2ced46c2 TM |
245 | p->o_res.server = p->o_arg.server; |
246 | nfs_fattr_init(&p->f_attr); | |
247 | nfs_fattr_init(&p->dir_attr); | |
248 | } | |
249 | ||
ad389da7 | 250 | static struct nfs4_opendata *nfs4_opendata_alloc(struct path *path, |
e56e0b78 TM |
251 | struct nfs4_state_owner *sp, int flags, |
252 | const struct iattr *attrs) | |
253 | { | |
ad389da7 | 254 | struct dentry *parent = dget_parent(path->dentry); |
e56e0b78 TM |
255 | struct inode *dir = parent->d_inode; |
256 | struct nfs_server *server = NFS_SERVER(dir); | |
257 | struct nfs4_opendata *p; | |
258 | ||
259 | p = kzalloc(sizeof(*p), GFP_KERNEL); | |
260 | if (p == NULL) | |
261 | goto err; | |
262 | p->o_arg.seqid = nfs_alloc_seqid(&sp->so_seqid); | |
263 | if (p->o_arg.seqid == NULL) | |
264 | goto err_free; | |
ad389da7 TM |
265 | p->path.mnt = mntget(path->mnt); |
266 | p->path.dentry = dget(path->dentry); | |
e56e0b78 TM |
267 | p->dir = parent; |
268 | p->owner = sp; | |
269 | atomic_inc(&sp->so_count); | |
270 | p->o_arg.fh = NFS_FH(dir); | |
271 | p->o_arg.open_flags = flags, | |
7539bbab | 272 | p->o_arg.clientid = server->nfs_client->cl_clientid; |
9f958ab8 | 273 | p->o_arg.id = sp->so_owner_id.id; |
ad389da7 | 274 | p->o_arg.name = &p->path.dentry->d_name; |
e56e0b78 TM |
275 | p->o_arg.server = server; |
276 | p->o_arg.bitmask = server->attr_bitmask; | |
277 | p->o_arg.claim = NFS4_OPEN_CLAIM_NULL; | |
e56e0b78 TM |
278 | if (flags & O_EXCL) { |
279 | u32 *s = (u32 *) p->o_arg.u.verifier.data; | |
280 | s[0] = jiffies; | |
281 | s[1] = current->pid; | |
282 | } else if (flags & O_CREAT) { | |
283 | p->o_arg.u.attrs = &p->attrs; | |
284 | memcpy(&p->attrs, attrs, sizeof(p->attrs)); | |
285 | } | |
cdd4e68b TM |
286 | p->c_arg.fh = &p->o_res.fh; |
287 | p->c_arg.stateid = &p->o_res.stateid; | |
288 | p->c_arg.seqid = p->o_arg.seqid; | |
2ced46c2 | 289 | nfs4_init_opendata_res(p); |
c6d00e63 | 290 | kref_init(&p->kref); |
e56e0b78 TM |
291 | return p; |
292 | err_free: | |
293 | kfree(p); | |
294 | err: | |
295 | dput(parent); | |
296 | return NULL; | |
297 | } | |
298 | ||
c6d00e63 | 299 | static void nfs4_opendata_free(struct kref *kref) |
e56e0b78 | 300 | { |
c6d00e63 TM |
301 | struct nfs4_opendata *p = container_of(kref, |
302 | struct nfs4_opendata, kref); | |
303 | ||
304 | nfs_free_seqid(p->o_arg.seqid); | |
aac00a8d TM |
305 | if (p->state != NULL) |
306 | nfs4_put_open_state(p->state); | |
c6d00e63 TM |
307 | nfs4_put_state_owner(p->owner); |
308 | dput(p->dir); | |
31f31db1 | 309 | path_put(&p->path); |
c6d00e63 TM |
310 | kfree(p); |
311 | } | |
312 | ||
313 | static void nfs4_opendata_put(struct nfs4_opendata *p) | |
314 | { | |
315 | if (p != NULL) | |
316 | kref_put(&p->kref, nfs4_opendata_free); | |
e56e0b78 TM |
317 | } |
318 | ||
06f814a3 TM |
319 | static int nfs4_wait_for_completion_rpc_task(struct rpc_task *task) |
320 | { | |
06f814a3 TM |
321 | int ret; |
322 | ||
06f814a3 | 323 | ret = rpc_wait_for_completion_task(task); |
06f814a3 TM |
324 | return ret; |
325 | } | |
326 | ||
6ee41268 TM |
327 | static int can_open_cached(struct nfs4_state *state, int mode) |
328 | { | |
329 | int ret = 0; | |
330 | switch (mode & (FMODE_READ|FMODE_WRITE|O_EXCL)) { | |
331 | case FMODE_READ: | |
332 | ret |= test_bit(NFS_O_RDONLY_STATE, &state->flags) != 0; | |
6ee41268 TM |
333 | break; |
334 | case FMODE_WRITE: | |
335 | ret |= test_bit(NFS_O_WRONLY_STATE, &state->flags) != 0; | |
6ee41268 TM |
336 | break; |
337 | case FMODE_READ|FMODE_WRITE: | |
338 | ret |= test_bit(NFS_O_RDWR_STATE, &state->flags) != 0; | |
339 | } | |
340 | return ret; | |
341 | } | |
342 | ||
aac00a8d TM |
343 | static int can_open_delegated(struct nfs_delegation *delegation, mode_t open_flags) |
344 | { | |
345 | if ((delegation->type & open_flags) != open_flags) | |
346 | return 0; | |
347 | if (delegation->flags & NFS_DELEGATION_NEED_RECLAIM) | |
348 | return 0; | |
349 | return 1; | |
350 | } | |
351 | ||
003707c7 | 352 | static void update_open_stateflags(struct nfs4_state *state, mode_t open_flags) |
e7616923 TM |
353 | { |
354 | switch (open_flags) { | |
355 | case FMODE_WRITE: | |
356 | state->n_wronly++; | |
357 | break; | |
358 | case FMODE_READ: | |
359 | state->n_rdonly++; | |
360 | break; | |
361 | case FMODE_READ|FMODE_WRITE: | |
362 | state->n_rdwr++; | |
363 | } | |
003707c7 TM |
364 | nfs4_state_set_mode_locked(state, state->state | open_flags); |
365 | } | |
366 | ||
367 | static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *stateid, int open_flags) | |
368 | { | |
369 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0) | |
370 | memcpy(state->stateid.data, stateid->data, sizeof(state->stateid.data)); | |
371 | memcpy(state->open_stateid.data, stateid->data, sizeof(state->open_stateid.data)); | |
372 | switch (open_flags) { | |
373 | case FMODE_READ: | |
374 | set_bit(NFS_O_RDONLY_STATE, &state->flags); | |
375 | break; | |
376 | case FMODE_WRITE: | |
377 | set_bit(NFS_O_WRONLY_STATE, &state->flags); | |
378 | break; | |
379 | case FMODE_READ|FMODE_WRITE: | |
380 | set_bit(NFS_O_RDWR_STATE, &state->flags); | |
381 | } | |
e7616923 TM |
382 | } |
383 | ||
003707c7 TM |
384 | static void nfs_set_open_stateid(struct nfs4_state *state, nfs4_stateid *stateid, int open_flags) |
385 | { | |
8bda4e4c | 386 | write_seqlock(&state->seqlock); |
003707c7 | 387 | nfs_set_open_stateid_locked(state, stateid, open_flags); |
8bda4e4c | 388 | write_sequnlock(&state->seqlock); |
003707c7 TM |
389 | } |
390 | ||
391 | static void update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, nfs4_stateid *deleg_stateid, int open_flags) | |
1da177e4 | 392 | { |
1da177e4 | 393 | open_flags &= (FMODE_READ|FMODE_WRITE); |
8bda4e4c TM |
394 | /* |
395 | * Protect the call to nfs4_state_set_mode_locked and | |
396 | * serialise the stateid update | |
397 | */ | |
398 | write_seqlock(&state->seqlock); | |
003707c7 TM |
399 | if (deleg_stateid != NULL) { |
400 | memcpy(state->stateid.data, deleg_stateid->data, sizeof(state->stateid.data)); | |
401 | set_bit(NFS_DELEGATED_STATE, &state->flags); | |
402 | } | |
403 | if (open_stateid != NULL) | |
404 | nfs_set_open_stateid_locked(state, open_stateid, open_flags); | |
8bda4e4c TM |
405 | write_sequnlock(&state->seqlock); |
406 | spin_lock(&state->owner->so_lock); | |
e7616923 | 407 | update_open_stateflags(state, open_flags); |
ec073428 | 408 | spin_unlock(&state->owner->so_lock); |
1da177e4 LT |
409 | } |
410 | ||
aac00a8d TM |
411 | static void nfs4_return_incompatible_delegation(struct inode *inode, mode_t open_flags) |
412 | { | |
413 | struct nfs_delegation *delegation; | |
414 | ||
415 | rcu_read_lock(); | |
416 | delegation = rcu_dereference(NFS_I(inode)->delegation); | |
417 | if (delegation == NULL || (delegation->type & open_flags) == open_flags) { | |
418 | rcu_read_unlock(); | |
419 | return; | |
420 | } | |
421 | rcu_read_unlock(); | |
422 | nfs_inode_return_delegation(inode); | |
423 | } | |
424 | ||
6ee41268 | 425 | static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata) |
aac00a8d TM |
426 | { |
427 | struct nfs4_state *state = opendata->state; | |
428 | struct nfs_inode *nfsi = NFS_I(state->inode); | |
429 | struct nfs_delegation *delegation; | |
430 | int open_mode = opendata->o_arg.open_flags & (FMODE_READ|FMODE_WRITE|O_EXCL); | |
431 | nfs4_stateid stateid; | |
432 | int ret = -EAGAIN; | |
433 | ||
434 | rcu_read_lock(); | |
435 | delegation = rcu_dereference(nfsi->delegation); | |
aac00a8d | 436 | for (;;) { |
6ee41268 TM |
437 | if (can_open_cached(state, open_mode)) { |
438 | spin_lock(&state->owner->so_lock); | |
439 | if (can_open_cached(state, open_mode)) { | |
440 | update_open_stateflags(state, open_mode); | |
441 | spin_unlock(&state->owner->so_lock); | |
442 | rcu_read_unlock(); | |
443 | goto out_return_state; | |
444 | } | |
445 | spin_unlock(&state->owner->so_lock); | |
446 | } | |
447 | if (delegation == NULL) | |
448 | break; | |
aac00a8d TM |
449 | if (!can_open_delegated(delegation, open_mode)) |
450 | break; | |
451 | /* Save the delegation */ | |
452 | memcpy(stateid.data, delegation->stateid.data, sizeof(stateid.data)); | |
453 | rcu_read_unlock(); | |
454 | lock_kernel(); | |
af22f94a | 455 | ret = nfs_may_open(state->inode, state->owner->so_cred, open_mode); |
aac00a8d TM |
456 | unlock_kernel(); |
457 | if (ret != 0) | |
458 | goto out; | |
459 | ret = -EAGAIN; | |
460 | rcu_read_lock(); | |
461 | delegation = rcu_dereference(nfsi->delegation); | |
6ee41268 | 462 | /* If no delegation, try a cached open */ |
aac00a8d | 463 | if (delegation == NULL) |
6ee41268 | 464 | continue; |
aac00a8d TM |
465 | /* Is the delegation still valid? */ |
466 | if (memcmp(stateid.data, delegation->stateid.data, sizeof(stateid.data)) != 0) | |
467 | continue; | |
468 | rcu_read_unlock(); | |
469 | update_open_stateid(state, NULL, &stateid, open_mode); | |
470 | goto out_return_state; | |
471 | } | |
aac00a8d TM |
472 | rcu_read_unlock(); |
473 | out: | |
474 | return ERR_PTR(ret); | |
475 | out_return_state: | |
476 | atomic_inc(&state->count); | |
477 | return state; | |
478 | } | |
479 | ||
24ac23ab TM |
480 | static struct nfs4_state *nfs4_opendata_to_nfs4_state(struct nfs4_opendata *data) |
481 | { | |
482 | struct inode *inode; | |
483 | struct nfs4_state *state = NULL; | |
003707c7 TM |
484 | struct nfs_delegation *delegation; |
485 | nfs4_stateid *deleg_stateid = NULL; | |
1b370bc2 | 486 | int ret; |
24ac23ab | 487 | |
aac00a8d | 488 | if (!data->rpc_done) { |
6ee41268 | 489 | state = nfs4_try_open_cached(data); |
aac00a8d TM |
490 | goto out; |
491 | } | |
492 | ||
1b370bc2 | 493 | ret = -EAGAIN; |
24ac23ab | 494 | if (!(data->f_attr.valid & NFS_ATTR_FATTR)) |
1b370bc2 | 495 | goto err; |
24ac23ab | 496 | inode = nfs_fhget(data->dir->d_sb, &data->o_res.fh, &data->f_attr); |
1b370bc2 | 497 | ret = PTR_ERR(inode); |
03f28e3a | 498 | if (IS_ERR(inode)) |
1b370bc2 TM |
499 | goto err; |
500 | ret = -ENOMEM; | |
24ac23ab TM |
501 | state = nfs4_get_open_state(inode, data->owner); |
502 | if (state == NULL) | |
1b370bc2 | 503 | goto err_put_inode; |
549d6ed5 | 504 | if (data->o_res.delegation_type != 0) { |
549d6ed5 TM |
505 | int delegation_flags = 0; |
506 | ||
003707c7 TM |
507 | rcu_read_lock(); |
508 | delegation = rcu_dereference(NFS_I(inode)->delegation); | |
509 | if (delegation) | |
510 | delegation_flags = delegation->flags; | |
511 | rcu_read_unlock(); | |
549d6ed5 TM |
512 | if (!(delegation_flags & NFS_DELEGATION_NEED_RECLAIM)) |
513 | nfs_inode_set_delegation(state->inode, | |
514 | data->owner->so_cred, | |
515 | &data->o_res); | |
516 | else | |
517 | nfs_inode_reclaim_delegation(state->inode, | |
518 | data->owner->so_cred, | |
519 | &data->o_res); | |
520 | } | |
003707c7 TM |
521 | rcu_read_lock(); |
522 | delegation = rcu_dereference(NFS_I(inode)->delegation); | |
523 | if (delegation != NULL) | |
524 | deleg_stateid = &delegation->stateid; | |
525 | update_open_stateid(state, &data->o_res.stateid, deleg_stateid, data->o_arg.open_flags); | |
526 | rcu_read_unlock(); | |
24ac23ab | 527 | iput(inode); |
aac00a8d | 528 | out: |
24ac23ab | 529 | return state; |
1b370bc2 TM |
530 | err_put_inode: |
531 | iput(inode); | |
532 | err: | |
533 | return ERR_PTR(ret); | |
24ac23ab TM |
534 | } |
535 | ||
864472e9 TM |
536 | static struct nfs_open_context *nfs4_state_find_open_context(struct nfs4_state *state) |
537 | { | |
538 | struct nfs_inode *nfsi = NFS_I(state->inode); | |
539 | struct nfs_open_context *ctx; | |
540 | ||
541 | spin_lock(&state->inode->i_lock); | |
542 | list_for_each_entry(ctx, &nfsi->open_files, list) { | |
543 | if (ctx->state != state) | |
544 | continue; | |
545 | get_nfs_open_context(ctx); | |
546 | spin_unlock(&state->inode->i_lock); | |
547 | return ctx; | |
548 | } | |
549 | spin_unlock(&state->inode->i_lock); | |
550 | return ERR_PTR(-ENOENT); | |
551 | } | |
552 | ||
6f220ed5 TM |
553 | static struct nfs4_opendata *nfs4_open_recoverdata_alloc(struct nfs_open_context *ctx, struct nfs4_state *state) |
554 | { | |
555 | struct nfs4_opendata *opendata; | |
556 | ||
557 | opendata = nfs4_opendata_alloc(&ctx->path, state->owner, 0, NULL); | |
558 | if (opendata == NULL) | |
559 | return ERR_PTR(-ENOMEM); | |
560 | opendata->state = state; | |
561 | atomic_inc(&state->count); | |
562 | return opendata; | |
563 | } | |
564 | ||
2ced46c2 | 565 | static int nfs4_open_recover_helper(struct nfs4_opendata *opendata, mode_t openflags, struct nfs4_state **res) |
864472e9 | 566 | { |
2ced46c2 | 567 | struct nfs4_state *newstate; |
864472e9 TM |
568 | int ret; |
569 | ||
570 | opendata->o_arg.open_flags = openflags; | |
2ced46c2 TM |
571 | memset(&opendata->o_res, 0, sizeof(opendata->o_res)); |
572 | memset(&opendata->c_res, 0, sizeof(opendata->c_res)); | |
573 | nfs4_init_opendata_res(opendata); | |
864472e9 TM |
574 | ret = _nfs4_proc_open(opendata); |
575 | if (ret != 0) | |
576 | return ret; | |
2ced46c2 | 577 | newstate = nfs4_opendata_to_nfs4_state(opendata); |
1b370bc2 TM |
578 | if (IS_ERR(newstate)) |
579 | return PTR_ERR(newstate); | |
580 | nfs4_close_state(&opendata->path, newstate, openflags); | |
2ced46c2 | 581 | *res = newstate; |
864472e9 TM |
582 | return 0; |
583 | } | |
584 | ||
585 | static int nfs4_open_recover(struct nfs4_opendata *opendata, struct nfs4_state *state) | |
586 | { | |
864472e9 | 587 | struct nfs4_state *newstate; |
864472e9 TM |
588 | int ret; |
589 | ||
590 | /* memory barrier prior to reading state->n_* */ | |
2ced46c2 | 591 | clear_bit(NFS_DELEGATED_STATE, &state->flags); |
864472e9 TM |
592 | smp_rmb(); |
593 | if (state->n_rdwr != 0) { | |
2ced46c2 | 594 | ret = nfs4_open_recover_helper(opendata, FMODE_READ|FMODE_WRITE, &newstate); |
864472e9 TM |
595 | if (ret != 0) |
596 | return ret; | |
2ced46c2 TM |
597 | if (newstate != state) |
598 | return -ESTALE; | |
864472e9 TM |
599 | } |
600 | if (state->n_wronly != 0) { | |
2ced46c2 | 601 | ret = nfs4_open_recover_helper(opendata, FMODE_WRITE, &newstate); |
864472e9 TM |
602 | if (ret != 0) |
603 | return ret; | |
2ced46c2 TM |
604 | if (newstate != state) |
605 | return -ESTALE; | |
864472e9 TM |
606 | } |
607 | if (state->n_rdonly != 0) { | |
2ced46c2 | 608 | ret = nfs4_open_recover_helper(opendata, FMODE_READ, &newstate); |
864472e9 TM |
609 | if (ret != 0) |
610 | return ret; | |
2ced46c2 TM |
611 | if (newstate != state) |
612 | return -ESTALE; | |
864472e9 | 613 | } |
1ac7e2fd TM |
614 | /* |
615 | * We may have performed cached opens for all three recoveries. | |
616 | * Check if we need to update the current stateid. | |
617 | */ | |
618 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0 && | |
619 | memcmp(state->stateid.data, state->open_stateid.data, sizeof(state->stateid.data)) != 0) { | |
8bda4e4c | 620 | write_seqlock(&state->seqlock); |
1ac7e2fd TM |
621 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0) |
622 | memcpy(state->stateid.data, state->open_stateid.data, sizeof(state->stateid.data)); | |
8bda4e4c | 623 | write_sequnlock(&state->seqlock); |
1ac7e2fd | 624 | } |
864472e9 TM |
625 | return 0; |
626 | } | |
627 | ||
1da177e4 LT |
628 | /* |
629 | * OPEN_RECLAIM: | |
630 | * reclaim state on the server after a reboot. | |
1da177e4 | 631 | */ |
539cd03a | 632 | static int _nfs4_do_open_reclaim(struct nfs_open_context *ctx, struct nfs4_state *state) |
1da177e4 | 633 | { |
1ac7e2fd | 634 | struct nfs_delegation *delegation; |
864472e9 TM |
635 | struct nfs4_opendata *opendata; |
636 | int delegation_type = 0; | |
1da177e4 LT |
637 | int status; |
638 | ||
6f220ed5 TM |
639 | opendata = nfs4_open_recoverdata_alloc(ctx, state); |
640 | if (IS_ERR(opendata)) | |
641 | return PTR_ERR(opendata); | |
864472e9 TM |
642 | opendata->o_arg.claim = NFS4_OPEN_CLAIM_PREVIOUS; |
643 | opendata->o_arg.fh = NFS_FH(state->inode); | |
1ac7e2fd TM |
644 | rcu_read_lock(); |
645 | delegation = rcu_dereference(NFS_I(state->inode)->delegation); | |
646 | if (delegation != NULL && (delegation->flags & NFS_DELEGATION_NEED_RECLAIM) != 0) | |
65bbf6bd | 647 | delegation_type = delegation->type; |
1ac7e2fd | 648 | rcu_read_unlock(); |
864472e9 TM |
649 | opendata->o_arg.u.delegation_type = delegation_type; |
650 | status = nfs4_open_recover(opendata, state); | |
c6d00e63 | 651 | nfs4_opendata_put(opendata); |
1da177e4 LT |
652 | return status; |
653 | } | |
654 | ||
539cd03a | 655 | static int nfs4_do_open_reclaim(struct nfs_open_context *ctx, struct nfs4_state *state) |
1da177e4 LT |
656 | { |
657 | struct nfs_server *server = NFS_SERVER(state->inode); | |
658 | struct nfs4_exception exception = { }; | |
659 | int err; | |
660 | do { | |
539cd03a | 661 | err = _nfs4_do_open_reclaim(ctx, state); |
202b50dc TM |
662 | if (err != -NFS4ERR_DELAY) |
663 | break; | |
664 | nfs4_handle_exception(server, err, &exception); | |
1da177e4 LT |
665 | } while (exception.retry); |
666 | return err; | |
667 | } | |
668 | ||
864472e9 TM |
669 | static int nfs4_open_reclaim(struct nfs4_state_owner *sp, struct nfs4_state *state) |
670 | { | |
671 | struct nfs_open_context *ctx; | |
672 | int ret; | |
673 | ||
674 | ctx = nfs4_state_find_open_context(state); | |
675 | if (IS_ERR(ctx)) | |
676 | return PTR_ERR(ctx); | |
539cd03a | 677 | ret = nfs4_do_open_reclaim(ctx, state); |
864472e9 TM |
678 | put_nfs_open_context(ctx); |
679 | return ret; | |
680 | } | |
681 | ||
13437e12 | 682 | static int _nfs4_open_delegation_recall(struct nfs_open_context *ctx, struct nfs4_state *state, const nfs4_stateid *stateid) |
1da177e4 | 683 | { |
e56e0b78 | 684 | struct nfs4_opendata *opendata; |
864472e9 | 685 | int ret; |
1da177e4 | 686 | |
6f220ed5 TM |
687 | opendata = nfs4_open_recoverdata_alloc(ctx, state); |
688 | if (IS_ERR(opendata)) | |
689 | return PTR_ERR(opendata); | |
e56e0b78 | 690 | opendata->o_arg.claim = NFS4_OPEN_CLAIM_DELEGATE_CUR; |
13437e12 | 691 | memcpy(opendata->o_arg.u.delegation.data, stateid->data, |
e56e0b78 | 692 | sizeof(opendata->o_arg.u.delegation.data)); |
864472e9 | 693 | ret = nfs4_open_recover(opendata, state); |
c6d00e63 | 694 | nfs4_opendata_put(opendata); |
864472e9 | 695 | return ret; |
1da177e4 LT |
696 | } |
697 | ||
13437e12 | 698 | int nfs4_open_delegation_recall(struct nfs_open_context *ctx, struct nfs4_state *state, const nfs4_stateid *stateid) |
1da177e4 LT |
699 | { |
700 | struct nfs4_exception exception = { }; | |
539cd03a | 701 | struct nfs_server *server = NFS_SERVER(state->inode); |
1da177e4 LT |
702 | int err; |
703 | do { | |
13437e12 | 704 | err = _nfs4_open_delegation_recall(ctx, state, stateid); |
1da177e4 LT |
705 | switch (err) { |
706 | case 0: | |
707 | return err; | |
708 | case -NFS4ERR_STALE_CLIENTID: | |
709 | case -NFS4ERR_STALE_STATEID: | |
710 | case -NFS4ERR_EXPIRED: | |
711 | /* Don't recall a delegation if it was lost */ | |
7539bbab | 712 | nfs4_schedule_state_recovery(server->nfs_client); |
1da177e4 LT |
713 | return err; |
714 | } | |
715 | err = nfs4_handle_exception(server, err, &exception); | |
716 | } while (exception.retry); | |
717 | return err; | |
718 | } | |
719 | ||
cdd4e68b TM |
720 | static void nfs4_open_confirm_done(struct rpc_task *task, void *calldata) |
721 | { | |
722 | struct nfs4_opendata *data = calldata; | |
723 | ||
724 | data->rpc_status = task->tk_status; | |
725 | if (RPC_ASSASSINATED(task)) | |
726 | return; | |
26e976a8 | 727 | if (data->rpc_status == 0) { |
cdd4e68b TM |
728 | memcpy(data->o_res.stateid.data, data->c_res.stateid.data, |
729 | sizeof(data->o_res.stateid.data)); | |
bb22629e | 730 | nfs_confirm_seqid(&data->owner->so_seqid, 0); |
26e976a8 | 731 | renew_lease(data->o_res.server, data->timestamp); |
3e309914 | 732 | data->rpc_done = 1; |
26e976a8 | 733 | } |
cdd4e68b TM |
734 | } |
735 | ||
736 | static void nfs4_open_confirm_release(void *calldata) | |
737 | { | |
738 | struct nfs4_opendata *data = calldata; | |
739 | struct nfs4_state *state = NULL; | |
740 | ||
741 | /* If this request hasn't been cancelled, do nothing */ | |
742 | if (data->cancelled == 0) | |
743 | goto out_free; | |
744 | /* In case of error, no cleanup! */ | |
3e309914 | 745 | if (!data->rpc_done) |
cdd4e68b | 746 | goto out_free; |
cdd4e68b | 747 | state = nfs4_opendata_to_nfs4_state(data); |
1b370bc2 | 748 | if (!IS_ERR(state)) |
4a35bd41 | 749 | nfs4_close_state(&data->path, state, data->o_arg.open_flags); |
cdd4e68b | 750 | out_free: |
c6d00e63 | 751 | nfs4_opendata_put(data); |
cdd4e68b TM |
752 | } |
753 | ||
754 | static const struct rpc_call_ops nfs4_open_confirm_ops = { | |
cdd4e68b TM |
755 | .rpc_call_done = nfs4_open_confirm_done, |
756 | .rpc_release = nfs4_open_confirm_release, | |
757 | }; | |
758 | ||
759 | /* | |
760 | * Note: On error, nfs4_proc_open_confirm will free the struct nfs4_opendata | |
761 | */ | |
762 | static int _nfs4_proc_open_confirm(struct nfs4_opendata *data) | |
763 | { | |
764 | struct nfs_server *server = NFS_SERVER(data->dir->d_inode); | |
765 | struct rpc_task *task; | |
5138fde0 TM |
766 | struct rpc_message msg = { |
767 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_CONFIRM], | |
768 | .rpc_argp = &data->c_arg, | |
769 | .rpc_resp = &data->c_res, | |
770 | .rpc_cred = data->owner->so_cred, | |
771 | }; | |
c970aa85 TM |
772 | struct rpc_task_setup task_setup_data = { |
773 | .rpc_client = server->client, | |
5138fde0 | 774 | .rpc_message = &msg, |
c970aa85 TM |
775 | .callback_ops = &nfs4_open_confirm_ops, |
776 | .callback_data = data, | |
101070ca | 777 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
778 | .flags = RPC_TASK_ASYNC, |
779 | }; | |
1da177e4 LT |
780 | int status; |
781 | ||
c6d00e63 | 782 | kref_get(&data->kref); |
3e309914 TM |
783 | data->rpc_done = 0; |
784 | data->rpc_status = 0; | |
5138fde0 | 785 | data->timestamp = jiffies; |
c970aa85 | 786 | task = rpc_run_task(&task_setup_data); |
7a1218a2 | 787 | if (IS_ERR(task)) |
cdd4e68b | 788 | return PTR_ERR(task); |
cdd4e68b TM |
789 | status = nfs4_wait_for_completion_rpc_task(task); |
790 | if (status != 0) { | |
791 | data->cancelled = 1; | |
792 | smp_wmb(); | |
793 | } else | |
794 | status = data->rpc_status; | |
e6b3c4db | 795 | rpc_put_task(task); |
1da177e4 LT |
796 | return status; |
797 | } | |
798 | ||
24ac23ab | 799 | static void nfs4_open_prepare(struct rpc_task *task, void *calldata) |
1da177e4 | 800 | { |
24ac23ab TM |
801 | struct nfs4_opendata *data = calldata; |
802 | struct nfs4_state_owner *sp = data->owner; | |
5138fde0 | 803 | |
24ac23ab TM |
804 | if (nfs_wait_on_sequence(data->o_arg.seqid, task) != 0) |
805 | return; | |
aac00a8d TM |
806 | /* |
807 | * Check if we still need to send an OPEN call, or if we can use | |
808 | * a delegation instead. | |
809 | */ | |
810 | if (data->state != NULL) { | |
811 | struct nfs_delegation *delegation; | |
812 | ||
6ee41268 TM |
813 | if (can_open_cached(data->state, data->o_arg.open_flags & (FMODE_READ|FMODE_WRITE|O_EXCL))) |
814 | goto out_no_action; | |
aac00a8d TM |
815 | rcu_read_lock(); |
816 | delegation = rcu_dereference(NFS_I(data->state->inode)->delegation); | |
817 | if (delegation != NULL && | |
818 | (delegation->flags & NFS_DELEGATION_NEED_RECLAIM) == 0) { | |
819 | rcu_read_unlock(); | |
6ee41268 | 820 | goto out_no_action; |
aac00a8d TM |
821 | } |
822 | rcu_read_unlock(); | |
823 | } | |
24ac23ab | 824 | /* Update sequence id. */ |
9f958ab8 | 825 | data->o_arg.id = sp->so_owner_id.id; |
24ac23ab | 826 | data->o_arg.clientid = sp->so_client->cl_clientid; |
6f220ed5 | 827 | if (data->o_arg.claim == NFS4_OPEN_CLAIM_PREVIOUS) { |
5138fde0 | 828 | task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_NOATTR]; |
6f220ed5 TM |
829 | nfs_copy_fh(&data->o_res.fh, data->o_arg.fh); |
830 | } | |
26e976a8 | 831 | data->timestamp = jiffies; |
5138fde0 | 832 | rpc_call_start(task); |
6ee41268 TM |
833 | return; |
834 | out_no_action: | |
835 | task->tk_action = NULL; | |
836 | ||
24ac23ab | 837 | } |
1da177e4 | 838 | |
24ac23ab TM |
839 | static void nfs4_open_done(struct rpc_task *task, void *calldata) |
840 | { | |
841 | struct nfs4_opendata *data = calldata; | |
1da177e4 | 842 | |
24ac23ab TM |
843 | data->rpc_status = task->tk_status; |
844 | if (RPC_ASSASSINATED(task)) | |
845 | return; | |
846 | if (task->tk_status == 0) { | |
847 | switch (data->o_res.f_attr->mode & S_IFMT) { | |
6f926b5b TM |
848 | case S_IFREG: |
849 | break; | |
850 | case S_IFLNK: | |
24ac23ab | 851 | data->rpc_status = -ELOOP; |
6f926b5b TM |
852 | break; |
853 | case S_IFDIR: | |
24ac23ab | 854 | data->rpc_status = -EISDIR; |
6f926b5b TM |
855 | break; |
856 | default: | |
24ac23ab | 857 | data->rpc_status = -ENOTDIR; |
6f926b5b | 858 | } |
26e976a8 | 859 | renew_lease(data->o_res.server, data->timestamp); |
0f9f95e0 TM |
860 | if (!(data->o_res.rflags & NFS4_OPEN_RESULT_CONFIRM)) |
861 | nfs_confirm_seqid(&data->owner->so_seqid, 0); | |
6f926b5b | 862 | } |
3e309914 | 863 | data->rpc_done = 1; |
24ac23ab | 864 | } |
6f926b5b | 865 | |
24ac23ab TM |
866 | static void nfs4_open_release(void *calldata) |
867 | { | |
868 | struct nfs4_opendata *data = calldata; | |
869 | struct nfs4_state *state = NULL; | |
870 | ||
871 | /* If this request hasn't been cancelled, do nothing */ | |
872 | if (data->cancelled == 0) | |
873 | goto out_free; | |
874 | /* In case of error, no cleanup! */ | |
3e309914 | 875 | if (data->rpc_status != 0 || !data->rpc_done) |
24ac23ab TM |
876 | goto out_free; |
877 | /* In case we need an open_confirm, no cleanup! */ | |
878 | if (data->o_res.rflags & NFS4_OPEN_RESULT_CONFIRM) | |
879 | goto out_free; | |
24ac23ab | 880 | state = nfs4_opendata_to_nfs4_state(data); |
1b370bc2 | 881 | if (!IS_ERR(state)) |
4a35bd41 | 882 | nfs4_close_state(&data->path, state, data->o_arg.open_flags); |
24ac23ab | 883 | out_free: |
c6d00e63 | 884 | nfs4_opendata_put(data); |
24ac23ab TM |
885 | } |
886 | ||
887 | static const struct rpc_call_ops nfs4_open_ops = { | |
888 | .rpc_call_prepare = nfs4_open_prepare, | |
889 | .rpc_call_done = nfs4_open_done, | |
890 | .rpc_release = nfs4_open_release, | |
891 | }; | |
892 | ||
893 | /* | |
894 | * Note: On error, nfs4_proc_open will free the struct nfs4_opendata | |
895 | */ | |
896 | static int _nfs4_proc_open(struct nfs4_opendata *data) | |
897 | { | |
898 | struct inode *dir = data->dir->d_inode; | |
899 | struct nfs_server *server = NFS_SERVER(dir); | |
900 | struct nfs_openargs *o_arg = &data->o_arg; | |
901 | struct nfs_openres *o_res = &data->o_res; | |
902 | struct rpc_task *task; | |
5138fde0 TM |
903 | struct rpc_message msg = { |
904 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN], | |
905 | .rpc_argp = o_arg, | |
906 | .rpc_resp = o_res, | |
907 | .rpc_cred = data->owner->so_cred, | |
908 | }; | |
c970aa85 TM |
909 | struct rpc_task_setup task_setup_data = { |
910 | .rpc_client = server->client, | |
5138fde0 | 911 | .rpc_message = &msg, |
c970aa85 TM |
912 | .callback_ops = &nfs4_open_ops, |
913 | .callback_data = data, | |
101070ca | 914 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
915 | .flags = RPC_TASK_ASYNC, |
916 | }; | |
24ac23ab TM |
917 | int status; |
918 | ||
c6d00e63 | 919 | kref_get(&data->kref); |
3e309914 TM |
920 | data->rpc_done = 0; |
921 | data->rpc_status = 0; | |
2ced46c2 | 922 | data->cancelled = 0; |
c970aa85 | 923 | task = rpc_run_task(&task_setup_data); |
7a1218a2 | 924 | if (IS_ERR(task)) |
24ac23ab | 925 | return PTR_ERR(task); |
24ac23ab TM |
926 | status = nfs4_wait_for_completion_rpc_task(task); |
927 | if (status != 0) { | |
928 | data->cancelled = 1; | |
929 | smp_wmb(); | |
930 | } else | |
931 | status = data->rpc_status; | |
e6b3c4db | 932 | rpc_put_task(task); |
3e309914 | 933 | if (status != 0 || !data->rpc_done) |
24ac23ab TM |
934 | return status; |
935 | ||
9936781d TM |
936 | if (o_res->fh.size == 0) |
937 | _nfs4_proc_lookup(dir, o_arg->name, &o_res->fh, o_res->f_attr); | |
938 | ||
56ae19f3 TM |
939 | if (o_arg->open_flags & O_CREAT) { |
940 | update_changeattr(dir, &o_res->cinfo); | |
941 | nfs_post_op_update_inode(dir, o_res->dir_attr); | |
942 | } else | |
943 | nfs_refresh_inode(dir, o_res->dir_attr); | |
1da177e4 | 944 | if(o_res->rflags & NFS4_OPEN_RESULT_CONFIRM) { |
cdd4e68b | 945 | status = _nfs4_proc_open_confirm(data); |
1da177e4 | 946 | if (status != 0) |
24ac23ab | 947 | return status; |
1da177e4 LT |
948 | } |
949 | if (!(o_res->f_attr->valid & NFS_ATTR_FATTR)) | |
9936781d | 950 | _nfs4_proc_getattr(server, &o_res->fh, o_res->f_attr); |
24ac23ab | 951 | return 0; |
1da177e4 LT |
952 | } |
953 | ||
10afec90 | 954 | static int nfs4_recover_expired_lease(struct nfs_server *server) |
58d9714a | 955 | { |
7539bbab | 956 | struct nfs_client *clp = server->nfs_client; |
6b30954e | 957 | int ret; |
58d9714a | 958 | |
6b30954e TM |
959 | for (;;) { |
960 | ret = nfs4_wait_clnt_recover(server->client, clp); | |
961 | if (ret != 0) | |
962 | return ret; | |
963 | if (!test_and_clear_bit(NFS4CLNT_LEASE_EXPIRED, &clp->cl_state)) | |
964 | break; | |
58d9714a | 965 | nfs4_schedule_state_recovery(clp); |
6b30954e TM |
966 | } |
967 | return 0; | |
58d9714a TM |
968 | } |
969 | ||
1da177e4 LT |
970 | /* |
971 | * OPEN_EXPIRED: | |
972 | * reclaim state on the server after a network partition. | |
973 | * Assumes caller holds the appropriate lock | |
974 | */ | |
539cd03a | 975 | static int _nfs4_open_expired(struct nfs_open_context *ctx, struct nfs4_state *state) |
1da177e4 | 976 | { |
e56e0b78 | 977 | struct nfs4_opendata *opendata; |
864472e9 | 978 | int ret; |
1da177e4 | 979 | |
6f220ed5 TM |
980 | opendata = nfs4_open_recoverdata_alloc(ctx, state); |
981 | if (IS_ERR(opendata)) | |
982 | return PTR_ERR(opendata); | |
864472e9 | 983 | ret = nfs4_open_recover(opendata, state); |
35d05778 | 984 | if (ret == -ESTALE) |
539cd03a | 985 | d_drop(ctx->path.dentry); |
c6d00e63 | 986 | nfs4_opendata_put(opendata); |
864472e9 | 987 | return ret; |
1da177e4 LT |
988 | } |
989 | ||
539cd03a | 990 | static inline int nfs4_do_open_expired(struct nfs_open_context *ctx, struct nfs4_state *state) |
202b50dc | 991 | { |
539cd03a | 992 | struct nfs_server *server = NFS_SERVER(state->inode); |
202b50dc TM |
993 | struct nfs4_exception exception = { }; |
994 | int err; | |
995 | ||
996 | do { | |
539cd03a | 997 | err = _nfs4_open_expired(ctx, state); |
202b50dc TM |
998 | if (err == -NFS4ERR_DELAY) |
999 | nfs4_handle_exception(server, err, &exception); | |
1000 | } while (exception.retry); | |
1001 | return err; | |
1002 | } | |
1003 | ||
1da177e4 LT |
1004 | static int nfs4_open_expired(struct nfs4_state_owner *sp, struct nfs4_state *state) |
1005 | { | |
1da177e4 | 1006 | struct nfs_open_context *ctx; |
864472e9 | 1007 | int ret; |
1da177e4 | 1008 | |
864472e9 TM |
1009 | ctx = nfs4_state_find_open_context(state); |
1010 | if (IS_ERR(ctx)) | |
1011 | return PTR_ERR(ctx); | |
539cd03a | 1012 | ret = nfs4_do_open_expired(ctx, state); |
864472e9 TM |
1013 | put_nfs_open_context(ctx); |
1014 | return ret; | |
1da177e4 LT |
1015 | } |
1016 | ||
aa53ed54 JL |
1017 | /* |
1018 | * on an EXCLUSIVE create, the server should send back a bitmask with FATTR4-* | |
1019 | * fields corresponding to attributes that were used to store the verifier. | |
1020 | * Make sure we clobber those fields in the later setattr call | |
1021 | */ | |
1022 | static inline void nfs4_exclusive_attrset(struct nfs4_opendata *opendata, struct iattr *sattr) | |
1023 | { | |
1024 | if ((opendata->o_res.attrset[1] & FATTR4_WORD1_TIME_ACCESS) && | |
1025 | !(sattr->ia_valid & ATTR_ATIME_SET)) | |
1026 | sattr->ia_valid |= ATTR_ATIME; | |
1027 | ||
1028 | if ((opendata->o_res.attrset[1] & FATTR4_WORD1_TIME_MODIFY) && | |
1029 | !(sattr->ia_valid & ATTR_MTIME_SET)) | |
1030 | sattr->ia_valid |= ATTR_MTIME; | |
1031 | } | |
1032 | ||
1da177e4 | 1033 | /* |
24ac23ab | 1034 | * Returns a referenced nfs4_state |
1da177e4 | 1035 | */ |
ad389da7 | 1036 | static int _nfs4_do_open(struct inode *dir, struct path *path, int flags, struct iattr *sattr, struct rpc_cred *cred, struct nfs4_state **res) |
1da177e4 LT |
1037 | { |
1038 | struct nfs4_state_owner *sp; | |
1039 | struct nfs4_state *state = NULL; | |
1040 | struct nfs_server *server = NFS_SERVER(dir); | |
7539bbab | 1041 | struct nfs_client *clp = server->nfs_client; |
e56e0b78 | 1042 | struct nfs4_opendata *opendata; |
aac00a8d | 1043 | int status; |
1da177e4 LT |
1044 | |
1045 | /* Protect against reboot recovery conflicts */ | |
1da177e4 LT |
1046 | status = -ENOMEM; |
1047 | if (!(sp = nfs4_get_state_owner(server, cred))) { | |
1048 | dprintk("nfs4_do_open: nfs4_get_state_owner failed!\n"); | |
1049 | goto out_err; | |
1050 | } | |
58d9714a TM |
1051 | status = nfs4_recover_expired_lease(server); |
1052 | if (status != 0) | |
b4454fe1 | 1053 | goto err_put_state_owner; |
aac00a8d TM |
1054 | if (path->dentry->d_inode != NULL) |
1055 | nfs4_return_incompatible_delegation(path->dentry->d_inode, flags & (FMODE_READ|FMODE_WRITE)); | |
58d9714a TM |
1056 | down_read(&clp->cl_sem); |
1057 | status = -ENOMEM; | |
ad389da7 | 1058 | opendata = nfs4_opendata_alloc(path, sp, flags, sattr); |
e56e0b78 | 1059 | if (opendata == NULL) |
76723de0 | 1060 | goto err_release_rwsem; |
1da177e4 | 1061 | |
aac00a8d TM |
1062 | if (path->dentry->d_inode != NULL) |
1063 | opendata->state = nfs4_get_open_state(path->dentry->d_inode, sp); | |
1064 | ||
24ac23ab | 1065 | status = _nfs4_proc_open(opendata); |
1da177e4 | 1066 | if (status != 0) |
c6d00e63 | 1067 | goto err_opendata_put; |
1da177e4 | 1068 | |
aa53ed54 JL |
1069 | if (opendata->o_arg.open_flags & O_EXCL) |
1070 | nfs4_exclusive_attrset(opendata, sattr); | |
1071 | ||
24ac23ab | 1072 | state = nfs4_opendata_to_nfs4_state(opendata); |
1b370bc2 TM |
1073 | status = PTR_ERR(state); |
1074 | if (IS_ERR(state)) | |
c6d00e63 | 1075 | goto err_opendata_put; |
c6d00e63 | 1076 | nfs4_opendata_put(opendata); |
1da177e4 LT |
1077 | nfs4_put_state_owner(sp); |
1078 | up_read(&clp->cl_sem); | |
1079 | *res = state; | |
1080 | return 0; | |
c6d00e63 TM |
1081 | err_opendata_put: |
1082 | nfs4_opendata_put(opendata); | |
76723de0 TM |
1083 | err_release_rwsem: |
1084 | up_read(&clp->cl_sem); | |
e56e0b78 TM |
1085 | err_put_state_owner: |
1086 | nfs4_put_state_owner(sp); | |
1da177e4 | 1087 | out_err: |
1da177e4 LT |
1088 | *res = NULL; |
1089 | return status; | |
1090 | } | |
1091 | ||
1092 | ||
ad389da7 | 1093 | static struct nfs4_state *nfs4_do_open(struct inode *dir, struct path *path, int flags, struct iattr *sattr, struct rpc_cred *cred) |
1da177e4 LT |
1094 | { |
1095 | struct nfs4_exception exception = { }; | |
1096 | struct nfs4_state *res; | |
1097 | int status; | |
1098 | ||
1099 | do { | |
ad389da7 | 1100 | status = _nfs4_do_open(dir, path, flags, sattr, cred, &res); |
1da177e4 LT |
1101 | if (status == 0) |
1102 | break; | |
1103 | /* NOTE: BAD_SEQID means the server and client disagree about the | |
1104 | * book-keeping w.r.t. state-changing operations | |
1105 | * (OPEN/CLOSE/LOCK/LOCKU...) | |
1106 | * It is actually a sign of a bug on the client or on the server. | |
1107 | * | |
1108 | * If we receive a BAD_SEQID error in the particular case of | |
cee54fc9 | 1109 | * doing an OPEN, we assume that nfs_increment_open_seqid() will |
1da177e4 LT |
1110 | * have unhashed the old state_owner for us, and that we can |
1111 | * therefore safely retry using a new one. We should still warn | |
1112 | * the user though... | |
1113 | */ | |
1114 | if (status == -NFS4ERR_BAD_SEQID) { | |
6f43ddcc TM |
1115 | printk(KERN_WARNING "NFS: v4 server %s " |
1116 | " returned a bad sequence-id error!\n", | |
1117 | NFS_SERVER(dir)->nfs_client->cl_hostname); | |
1da177e4 LT |
1118 | exception.retry = 1; |
1119 | continue; | |
1120 | } | |
550f5747 TM |
1121 | /* |
1122 | * BAD_STATEID on OPEN means that the server cancelled our | |
1123 | * state before it received the OPEN_CONFIRM. | |
1124 | * Recover by retrying the request as per the discussion | |
1125 | * on Page 181 of RFC3530. | |
1126 | */ | |
1127 | if (status == -NFS4ERR_BAD_STATEID) { | |
1128 | exception.retry = 1; | |
1129 | continue; | |
1130 | } | |
aac00a8d TM |
1131 | if (status == -EAGAIN) { |
1132 | /* We must have found a delegation */ | |
1133 | exception.retry = 1; | |
1134 | continue; | |
1135 | } | |
1da177e4 LT |
1136 | res = ERR_PTR(nfs4_handle_exception(NFS_SERVER(dir), |
1137 | status, &exception)); | |
1138 | } while (exception.retry); | |
1139 | return res; | |
1140 | } | |
1141 | ||
3e4f6290 TM |
1142 | static int _nfs4_do_setattr(struct inode *inode, struct nfs_fattr *fattr, |
1143 | struct iattr *sattr, struct nfs4_state *state) | |
1da177e4 | 1144 | { |
3e4f6290 | 1145 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 | 1146 | struct nfs_setattrargs arg = { |
3e4f6290 | 1147 | .fh = NFS_FH(inode), |
1da177e4 LT |
1148 | .iap = sattr, |
1149 | .server = server, | |
1150 | .bitmask = server->attr_bitmask, | |
1151 | }; | |
1152 | struct nfs_setattrres res = { | |
1153 | .fattr = fattr, | |
1154 | .server = server, | |
1155 | }; | |
1156 | struct rpc_message msg = { | |
1157 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETATTR], | |
1158 | .rpc_argp = &arg, | |
1159 | .rpc_resp = &res, | |
1160 | }; | |
26e976a8 | 1161 | unsigned long timestamp = jiffies; |
65e4308d | 1162 | int status; |
1da177e4 | 1163 | |
0e574af1 | 1164 | nfs_fattr_init(fattr); |
1da177e4 | 1165 | |
3e4f6290 TM |
1166 | if (nfs4_copy_delegation_stateid(&arg.stateid, inode)) { |
1167 | /* Use that stateid */ | |
1168 | } else if (state != NULL) { | |
1da177e4 | 1169 | msg.rpc_cred = state->owner->so_cred; |
08e9eac4 TM |
1170 | nfs4_copy_stateid(&arg.stateid, state, current->files); |
1171 | } else | |
1da177e4 LT |
1172 | memcpy(&arg.stateid, &zero_stateid, sizeof(arg.stateid)); |
1173 | ||
65e4308d | 1174 | status = rpc_call_sync(server->client, &msg, 0); |
26e976a8 TM |
1175 | if (status == 0 && state != NULL) |
1176 | renew_lease(server, timestamp); | |
65e4308d | 1177 | return status; |
1da177e4 LT |
1178 | } |
1179 | ||
3e4f6290 TM |
1180 | static int nfs4_do_setattr(struct inode *inode, struct nfs_fattr *fattr, |
1181 | struct iattr *sattr, struct nfs4_state *state) | |
1da177e4 | 1182 | { |
3e4f6290 | 1183 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 LT |
1184 | struct nfs4_exception exception = { }; |
1185 | int err; | |
1186 | do { | |
1187 | err = nfs4_handle_exception(server, | |
3e4f6290 | 1188 | _nfs4_do_setattr(inode, fattr, sattr, state), |
1da177e4 LT |
1189 | &exception); |
1190 | } while (exception.retry); | |
1191 | return err; | |
1192 | } | |
1193 | ||
1194 | struct nfs4_closedata { | |
4a35bd41 | 1195 | struct path path; |
1da177e4 LT |
1196 | struct inode *inode; |
1197 | struct nfs4_state *state; | |
1198 | struct nfs_closeargs arg; | |
1199 | struct nfs_closeres res; | |
516a6af6 | 1200 | struct nfs_fattr fattr; |
26e976a8 | 1201 | unsigned long timestamp; |
1da177e4 LT |
1202 | }; |
1203 | ||
963d8fe5 | 1204 | static void nfs4_free_closedata(void *data) |
9512135d | 1205 | { |
963d8fe5 TM |
1206 | struct nfs4_closedata *calldata = data; |
1207 | struct nfs4_state_owner *sp = calldata->state->owner; | |
9512135d TM |
1208 | |
1209 | nfs4_put_open_state(calldata->state); | |
1210 | nfs_free_seqid(calldata->arg.seqid); | |
9512135d | 1211 | nfs4_put_state_owner(sp); |
31f31db1 | 1212 | path_put(&calldata->path); |
9512135d TM |
1213 | kfree(calldata); |
1214 | } | |
1215 | ||
963d8fe5 | 1216 | static void nfs4_close_done(struct rpc_task *task, void *data) |
1da177e4 | 1217 | { |
963d8fe5 | 1218 | struct nfs4_closedata *calldata = data; |
1da177e4 | 1219 | struct nfs4_state *state = calldata->state; |
1da177e4 LT |
1220 | struct nfs_server *server = NFS_SERVER(calldata->inode); |
1221 | ||
4ce70ada TM |
1222 | if (RPC_ASSASSINATED(task)) |
1223 | return; | |
1da177e4 LT |
1224 | /* hmm. we are done with the inode, and in the process of freeing |
1225 | * the state_owner. we keep this around to process errors | |
1226 | */ | |
1da177e4 LT |
1227 | switch (task->tk_status) { |
1228 | case 0: | |
45328c35 | 1229 | nfs_set_open_stateid(state, &calldata->res.stateid, 0); |
26e976a8 | 1230 | renew_lease(server, calldata->timestamp); |
1da177e4 LT |
1231 | break; |
1232 | case -NFS4ERR_STALE_STATEID: | |
1233 | case -NFS4ERR_EXPIRED: | |
1da177e4 LT |
1234 | break; |
1235 | default: | |
1236 | if (nfs4_async_handle_error(task, server) == -EAGAIN) { | |
1237 | rpc_restart_call(task); | |
1238 | return; | |
1239 | } | |
1240 | } | |
516a6af6 | 1241 | nfs_refresh_inode(calldata->inode, calldata->res.fattr); |
1da177e4 LT |
1242 | } |
1243 | ||
4ce70ada | 1244 | static void nfs4_close_prepare(struct rpc_task *task, void *data) |
1da177e4 | 1245 | { |
4ce70ada | 1246 | struct nfs4_closedata *calldata = data; |
9512135d | 1247 | struct nfs4_state *state = calldata->state; |
003707c7 | 1248 | int clear_rd, clear_wr, clear_rdwr; |
9512135d | 1249 | |
963d8fe5 | 1250 | if (nfs_wait_on_sequence(calldata->arg.seqid, task) != 0) |
9512135d | 1251 | return; |
003707c7 | 1252 | |
003707c7 | 1253 | clear_rd = clear_wr = clear_rdwr = 0; |
4cecb76f | 1254 | spin_lock(&state->owner->so_lock); |
003707c7 | 1255 | /* Calculate the change in open mode */ |
e7616923 | 1256 | if (state->n_rdwr == 0) { |
003707c7 | 1257 | if (state->n_rdonly == 0) { |
003707c7 TM |
1258 | clear_rd |= test_and_clear_bit(NFS_O_RDONLY_STATE, &state->flags); |
1259 | clear_rdwr |= test_and_clear_bit(NFS_O_RDWR_STATE, &state->flags); | |
1260 | } | |
1261 | if (state->n_wronly == 0) { | |
003707c7 TM |
1262 | clear_wr |= test_and_clear_bit(NFS_O_WRONLY_STATE, &state->flags); |
1263 | clear_rdwr |= test_and_clear_bit(NFS_O_RDWR_STATE, &state->flags); | |
1264 | } | |
e7616923 | 1265 | } |
4cecb76f | 1266 | spin_unlock(&state->owner->so_lock); |
003707c7 | 1267 | if (!clear_rd && !clear_wr && !clear_rdwr) { |
963d8fe5 TM |
1268 | /* Note: exit _without_ calling nfs4_close_done */ |
1269 | task->tk_action = NULL; | |
9512135d TM |
1270 | return; |
1271 | } | |
516a6af6 | 1272 | nfs_fattr_init(calldata->res.fattr); |
45328c35 | 1273 | if (test_bit(NFS_O_RDONLY_STATE, &state->flags) != 0) { |
5138fde0 | 1274 | task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_DOWNGRADE]; |
45328c35 TM |
1275 | calldata->arg.open_flags = FMODE_READ; |
1276 | } else if (test_bit(NFS_O_WRONLY_STATE, &state->flags) != 0) { | |
5138fde0 | 1277 | task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_DOWNGRADE]; |
45328c35 TM |
1278 | calldata->arg.open_flags = FMODE_WRITE; |
1279 | } | |
26e976a8 | 1280 | calldata->timestamp = jiffies; |
5138fde0 | 1281 | rpc_call_start(task); |
1da177e4 LT |
1282 | } |
1283 | ||
963d8fe5 | 1284 | static const struct rpc_call_ops nfs4_close_ops = { |
4ce70ada | 1285 | .rpc_call_prepare = nfs4_close_prepare, |
963d8fe5 TM |
1286 | .rpc_call_done = nfs4_close_done, |
1287 | .rpc_release = nfs4_free_closedata, | |
1288 | }; | |
1289 | ||
1da177e4 LT |
1290 | /* |
1291 | * It is possible for data to be read/written from a mem-mapped file | |
1292 | * after the sys_close call (which hits the vfs layer as a flush). | |
1293 | * This means that we can't safely call nfsv4 close on a file until | |
1294 | * the inode is cleared. This in turn means that we are not good | |
1295 | * NFSv4 citizens - we do not indicate to the server to update the file's | |
1296 | * share state even when we are done with one of the three share | |
1297 | * stateid's in the inode. | |
1298 | * | |
1299 | * NOTE: Caller must be holding the sp->so_owner semaphore! | |
1300 | */ | |
a49c3c77 | 1301 | int nfs4_do_close(struct path *path, struct nfs4_state *state, int wait) |
1da177e4 | 1302 | { |
4a35bd41 | 1303 | struct nfs_server *server = NFS_SERVER(state->inode); |
1da177e4 | 1304 | struct nfs4_closedata *calldata; |
b39e625b TM |
1305 | struct nfs4_state_owner *sp = state->owner; |
1306 | struct rpc_task *task; | |
5138fde0 TM |
1307 | struct rpc_message msg = { |
1308 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CLOSE], | |
1309 | .rpc_cred = state->owner->so_cred, | |
1310 | }; | |
c970aa85 TM |
1311 | struct rpc_task_setup task_setup_data = { |
1312 | .rpc_client = server->client, | |
5138fde0 | 1313 | .rpc_message = &msg, |
c970aa85 | 1314 | .callback_ops = &nfs4_close_ops, |
101070ca | 1315 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
1316 | .flags = RPC_TASK_ASYNC, |
1317 | }; | |
9512135d | 1318 | int status = -ENOMEM; |
1da177e4 | 1319 | |
9512135d | 1320 | calldata = kmalloc(sizeof(*calldata), GFP_KERNEL); |
1da177e4 | 1321 | if (calldata == NULL) |
9512135d | 1322 | goto out; |
4a35bd41 | 1323 | calldata->inode = state->inode; |
1da177e4 | 1324 | calldata->state = state; |
4a35bd41 | 1325 | calldata->arg.fh = NFS_FH(state->inode); |
003707c7 | 1326 | calldata->arg.stateid = &state->open_stateid; |
1da177e4 | 1327 | /* Serialization for the sequence id */ |
cee54fc9 | 1328 | calldata->arg.seqid = nfs_alloc_seqid(&state->owner->so_seqid); |
9512135d TM |
1329 | if (calldata->arg.seqid == NULL) |
1330 | goto out_free_calldata; | |
516a6af6 TM |
1331 | calldata->arg.bitmask = server->attr_bitmask; |
1332 | calldata->res.fattr = &calldata->fattr; | |
c1d51931 | 1333 | calldata->res.seqid = calldata->arg.seqid; |
516a6af6 | 1334 | calldata->res.server = server; |
4a35bd41 TM |
1335 | calldata->path.mnt = mntget(path->mnt); |
1336 | calldata->path.dentry = dget(path->dentry); | |
9512135d | 1337 | |
5138fde0 TM |
1338 | msg.rpc_argp = &calldata->arg, |
1339 | msg.rpc_resp = &calldata->res, | |
c970aa85 TM |
1340 | task_setup_data.callback_data = calldata; |
1341 | task = rpc_run_task(&task_setup_data); | |
b39e625b TM |
1342 | if (IS_ERR(task)) |
1343 | return PTR_ERR(task); | |
a49c3c77 TM |
1344 | status = 0; |
1345 | if (wait) | |
1346 | status = rpc_wait_for_completion_task(task); | |
b39e625b | 1347 | rpc_put_task(task); |
a49c3c77 | 1348 | return status; |
9512135d TM |
1349 | out_free_calldata: |
1350 | kfree(calldata); | |
1351 | out: | |
b39e625b TM |
1352 | nfs4_put_open_state(state); |
1353 | nfs4_put_state_owner(sp); | |
9512135d | 1354 | return status; |
1da177e4 LT |
1355 | } |
1356 | ||
4a35bd41 | 1357 | static int nfs4_intent_set_file(struct nameidata *nd, struct path *path, struct nfs4_state *state) |
02a913a7 TM |
1358 | { |
1359 | struct file *filp; | |
1b45c46c | 1360 | int ret; |
02a913a7 | 1361 | |
1b45c46c TM |
1362 | /* If the open_intent is for execute, we have an extra check to make */ |
1363 | if (nd->intent.open.flags & FMODE_EXEC) { | |
af22f94a | 1364 | ret = nfs_may_open(state->inode, |
1b45c46c TM |
1365 | state->owner->so_cred, |
1366 | nd->intent.open.flags); | |
1367 | if (ret < 0) | |
1368 | goto out_close; | |
1369 | } | |
4a35bd41 | 1370 | filp = lookup_instantiate_filp(nd, path->dentry, NULL); |
02a913a7 TM |
1371 | if (!IS_ERR(filp)) { |
1372 | struct nfs_open_context *ctx; | |
cd3758e3 | 1373 | ctx = nfs_file_open_context(filp); |
02a913a7 | 1374 | ctx->state = state; |
95cf959b TM |
1375 | return 0; |
1376 | } | |
1b45c46c TM |
1377 | ret = PTR_ERR(filp); |
1378 | out_close: | |
a49c3c77 | 1379 | nfs4_close_sync(path, state, nd->intent.open.flags); |
1b45c46c | 1380 | return ret; |
02a913a7 TM |
1381 | } |
1382 | ||
1383 | struct dentry * | |
1da177e4 LT |
1384 | nfs4_atomic_open(struct inode *dir, struct dentry *dentry, struct nameidata *nd) |
1385 | { | |
ad389da7 | 1386 | struct path path = { |
4ac91378 | 1387 | .mnt = nd->path.mnt, |
ad389da7 TM |
1388 | .dentry = dentry, |
1389 | }; | |
4ac91378 | 1390 | struct dentry *parent; |
1da177e4 LT |
1391 | struct iattr attr; |
1392 | struct rpc_cred *cred; | |
1393 | struct nfs4_state *state; | |
02a913a7 | 1394 | struct dentry *res; |
1da177e4 LT |
1395 | |
1396 | if (nd->flags & LOOKUP_CREATE) { | |
1397 | attr.ia_mode = nd->intent.open.create_mode; | |
1398 | attr.ia_valid = ATTR_MODE; | |
1399 | if (!IS_POSIXACL(dir)) | |
1400 | attr.ia_mode &= ~current->fs->umask; | |
1401 | } else { | |
1402 | attr.ia_valid = 0; | |
1403 | BUG_ON(nd->intent.open.flags & O_CREAT); | |
1404 | } | |
1405 | ||
98a8e323 | 1406 | cred = rpc_lookup_cred(); |
1da177e4 | 1407 | if (IS_ERR(cred)) |
02a913a7 | 1408 | return (struct dentry *)cred; |
565277f6 TM |
1409 | parent = dentry->d_parent; |
1410 | /* Protect against concurrent sillydeletes */ | |
1411 | nfs_block_sillyrename(parent); | |
ad389da7 | 1412 | state = nfs4_do_open(dir, &path, nd->intent.open.flags, &attr, cred); |
1da177e4 | 1413 | put_rpccred(cred); |
02a913a7 | 1414 | if (IS_ERR(state)) { |
d75340cc | 1415 | if (PTR_ERR(state) == -ENOENT) { |
02a913a7 | 1416 | d_add(dentry, NULL); |
d75340cc TM |
1417 | nfs_set_verifier(dentry, nfs_save_change_attribute(dir)); |
1418 | } | |
565277f6 | 1419 | nfs_unblock_sillyrename(parent); |
02a913a7 TM |
1420 | return (struct dentry *)state; |
1421 | } | |
24ac23ab | 1422 | res = d_add_unique(dentry, igrab(state->inode)); |
02a913a7 | 1423 | if (res != NULL) |
deee9369 | 1424 | path.dentry = res; |
d75340cc | 1425 | nfs_set_verifier(path.dentry, nfs_save_change_attribute(dir)); |
565277f6 | 1426 | nfs_unblock_sillyrename(parent); |
4a35bd41 | 1427 | nfs4_intent_set_file(nd, &path, state); |
02a913a7 | 1428 | return res; |
1da177e4 LT |
1429 | } |
1430 | ||
1431 | int | |
02a913a7 | 1432 | nfs4_open_revalidate(struct inode *dir, struct dentry *dentry, int openflags, struct nameidata *nd) |
1da177e4 | 1433 | { |
ad389da7 | 1434 | struct path path = { |
4ac91378 | 1435 | .mnt = nd->path.mnt, |
ad389da7 TM |
1436 | .dentry = dentry, |
1437 | }; | |
1da177e4 LT |
1438 | struct rpc_cred *cred; |
1439 | struct nfs4_state *state; | |
1da177e4 | 1440 | |
98a8e323 | 1441 | cred = rpc_lookup_cred(); |
1da177e4 LT |
1442 | if (IS_ERR(cred)) |
1443 | return PTR_ERR(cred); | |
aac00a8d | 1444 | state = nfs4_do_open(dir, &path, openflags, NULL, cred); |
1da177e4 | 1445 | put_rpccred(cred); |
02a913a7 TM |
1446 | if (IS_ERR(state)) { |
1447 | switch (PTR_ERR(state)) { | |
1448 | case -EPERM: | |
1449 | case -EACCES: | |
1450 | case -EDQUOT: | |
1451 | case -ENOSPC: | |
1452 | case -EROFS: | |
1453 | lookup_instantiate_filp(nd, (struct dentry *)state, NULL); | |
1454 | return 1; | |
b87c0adf CL |
1455 | default: |
1456 | goto out_drop; | |
02a913a7 | 1457 | } |
02a913a7 | 1458 | } |
24ac23ab | 1459 | if (state->inode == dentry->d_inode) { |
d75340cc | 1460 | nfs_set_verifier(dentry, nfs_save_change_attribute(dir)); |
4a35bd41 | 1461 | nfs4_intent_set_file(nd, &path, state); |
1da177e4 LT |
1462 | return 1; |
1463 | } | |
a49c3c77 | 1464 | nfs4_close_sync(&path, state, openflags); |
02a913a7 TM |
1465 | out_drop: |
1466 | d_drop(dentry); | |
1da177e4 LT |
1467 | return 0; |
1468 | } | |
1469 | ||
1470 | ||
1471 | static int _nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *fhandle) | |
1472 | { | |
1473 | struct nfs4_server_caps_res res = {}; | |
1474 | struct rpc_message msg = { | |
1475 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SERVER_CAPS], | |
1476 | .rpc_argp = fhandle, | |
1477 | .rpc_resp = &res, | |
1478 | }; | |
1479 | int status; | |
1480 | ||
1481 | status = rpc_call_sync(server->client, &msg, 0); | |
1482 | if (status == 0) { | |
1483 | memcpy(server->attr_bitmask, res.attr_bitmask, sizeof(server->attr_bitmask)); | |
1484 | if (res.attr_bitmask[0] & FATTR4_WORD0_ACL) | |
1485 | server->caps |= NFS_CAP_ACLS; | |
1486 | if (res.has_links != 0) | |
1487 | server->caps |= NFS_CAP_HARDLINKS; | |
1488 | if (res.has_symlinks != 0) | |
1489 | server->caps |= NFS_CAP_SYMLINKS; | |
1490 | server->acl_bitmask = res.acl_bitmask; | |
1491 | } | |
1492 | return status; | |
1493 | } | |
1494 | ||
55a97593 | 1495 | int nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *fhandle) |
1da177e4 LT |
1496 | { |
1497 | struct nfs4_exception exception = { }; | |
1498 | int err; | |
1499 | do { | |
1500 | err = nfs4_handle_exception(server, | |
1501 | _nfs4_server_capabilities(server, fhandle), | |
1502 | &exception); | |
1503 | } while (exception.retry); | |
1504 | return err; | |
1505 | } | |
1506 | ||
1507 | static int _nfs4_lookup_root(struct nfs_server *server, struct nfs_fh *fhandle, | |
1508 | struct nfs_fsinfo *info) | |
1509 | { | |
1da177e4 LT |
1510 | struct nfs4_lookup_root_arg args = { |
1511 | .bitmask = nfs4_fattr_bitmap, | |
1512 | }; | |
1513 | struct nfs4_lookup_res res = { | |
1514 | .server = server, | |
0e574af1 | 1515 | .fattr = info->fattr, |
1da177e4 LT |
1516 | .fh = fhandle, |
1517 | }; | |
1518 | struct rpc_message msg = { | |
1519 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOOKUP_ROOT], | |
1520 | .rpc_argp = &args, | |
1521 | .rpc_resp = &res, | |
1522 | }; | |
0e574af1 | 1523 | nfs_fattr_init(info->fattr); |
1da177e4 LT |
1524 | return rpc_call_sync(server->client, &msg, 0); |
1525 | } | |
1526 | ||
1527 | static int nfs4_lookup_root(struct nfs_server *server, struct nfs_fh *fhandle, | |
1528 | struct nfs_fsinfo *info) | |
1529 | { | |
1530 | struct nfs4_exception exception = { }; | |
1531 | int err; | |
1532 | do { | |
1533 | err = nfs4_handle_exception(server, | |
1534 | _nfs4_lookup_root(server, fhandle, info), | |
1535 | &exception); | |
1536 | } while (exception.retry); | |
1537 | return err; | |
1538 | } | |
1539 | ||
54ceac45 DH |
1540 | /* |
1541 | * get the file handle for the "/" directory on the server | |
1542 | */ | |
1da177e4 | 1543 | static int nfs4_proc_get_root(struct nfs_server *server, struct nfs_fh *fhandle, |
54ceac45 | 1544 | struct nfs_fsinfo *info) |
1da177e4 | 1545 | { |
1da177e4 LT |
1546 | int status; |
1547 | ||
1da177e4 | 1548 | status = nfs4_lookup_root(server, fhandle, info); |
1da177e4 LT |
1549 | if (status == 0) |
1550 | status = nfs4_server_capabilities(server, fhandle); | |
1551 | if (status == 0) | |
1552 | status = nfs4_do_fsinfo(server, fhandle, info); | |
c12e87f4 | 1553 | return nfs4_map_errors(status); |
1da177e4 LT |
1554 | } |
1555 | ||
6b97fd3d MN |
1556 | /* |
1557 | * Get locations and (maybe) other attributes of a referral. | |
1558 | * Note that we'll actually follow the referral later when | |
1559 | * we detect fsid mismatch in inode revalidation | |
1560 | */ | |
56659e99 | 1561 | static int nfs4_get_referral(struct inode *dir, const struct qstr *name, struct nfs_fattr *fattr, struct nfs_fh *fhandle) |
6b97fd3d MN |
1562 | { |
1563 | int status = -ENOMEM; | |
1564 | struct page *page = NULL; | |
1565 | struct nfs4_fs_locations *locations = NULL; | |
6b97fd3d MN |
1566 | |
1567 | page = alloc_page(GFP_KERNEL); | |
1568 | if (page == NULL) | |
1569 | goto out; | |
1570 | locations = kmalloc(sizeof(struct nfs4_fs_locations), GFP_KERNEL); | |
1571 | if (locations == NULL) | |
1572 | goto out; | |
1573 | ||
c228fd3a | 1574 | status = nfs4_proc_fs_locations(dir, name, locations, page); |
6b97fd3d MN |
1575 | if (status != 0) |
1576 | goto out; | |
1577 | /* Make sure server returned a different fsid for the referral */ | |
1578 | if (nfs_fsid_equal(&NFS_SERVER(dir)->fsid, &locations->fattr.fsid)) { | |
3110ff80 | 1579 | dprintk("%s: server did not return a different fsid for a referral at %s\n", __func__, name->name); |
6b97fd3d MN |
1580 | status = -EIO; |
1581 | goto out; | |
1582 | } | |
1583 | ||
1584 | memcpy(fattr, &locations->fattr, sizeof(struct nfs_fattr)); | |
1585 | fattr->valid |= NFS_ATTR_FATTR_V4_REFERRAL; | |
1586 | if (!fattr->mode) | |
1587 | fattr->mode = S_IFDIR; | |
1588 | memset(fhandle, 0, sizeof(struct nfs_fh)); | |
1589 | out: | |
1590 | if (page) | |
1591 | __free_page(page); | |
1592 | if (locations) | |
1593 | kfree(locations); | |
1594 | return status; | |
1595 | } | |
1596 | ||
1da177e4 LT |
1597 | static int _nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fattr *fattr) |
1598 | { | |
1599 | struct nfs4_getattr_arg args = { | |
1600 | .fh = fhandle, | |
1601 | .bitmask = server->attr_bitmask, | |
1602 | }; | |
1603 | struct nfs4_getattr_res res = { | |
1604 | .fattr = fattr, | |
1605 | .server = server, | |
1606 | }; | |
1607 | struct rpc_message msg = { | |
1608 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETATTR], | |
1609 | .rpc_argp = &args, | |
1610 | .rpc_resp = &res, | |
1611 | }; | |
1612 | ||
0e574af1 | 1613 | nfs_fattr_init(fattr); |
1da177e4 LT |
1614 | return rpc_call_sync(server->client, &msg, 0); |
1615 | } | |
1616 | ||
1617 | static int nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fattr *fattr) | |
1618 | { | |
1619 | struct nfs4_exception exception = { }; | |
1620 | int err; | |
1621 | do { | |
1622 | err = nfs4_handle_exception(server, | |
1623 | _nfs4_proc_getattr(server, fhandle, fattr), | |
1624 | &exception); | |
1625 | } while (exception.retry); | |
1626 | return err; | |
1627 | } | |
1628 | ||
1629 | /* | |
1630 | * The file is not closed if it is opened due to the a request to change | |
1631 | * the size of the file. The open call will not be needed once the | |
1632 | * VFS layer lookup-intents are implemented. | |
1633 | * | |
1634 | * Close is called when the inode is destroyed. | |
1635 | * If we haven't opened the file for O_WRONLY, we | |
1636 | * need to in the size_change case to obtain a stateid. | |
1637 | * | |
1638 | * Got race? | |
1639 | * Because OPEN is always done by name in nfsv4, it is | |
1640 | * possible that we opened a different file by the same | |
1641 | * name. We can recognize this race condition, but we | |
1642 | * can't do anything about it besides returning an error. | |
1643 | * | |
1644 | * This will be fixed with VFS changes (lookup-intent). | |
1645 | */ | |
1646 | static int | |
1647 | nfs4_proc_setattr(struct dentry *dentry, struct nfs_fattr *fattr, | |
1648 | struct iattr *sattr) | |
1649 | { | |
08e9eac4 TM |
1650 | struct rpc_cred *cred; |
1651 | struct inode *inode = dentry->d_inode; | |
d530838b TM |
1652 | struct nfs_open_context *ctx; |
1653 | struct nfs4_state *state = NULL; | |
1da177e4 LT |
1654 | int status; |
1655 | ||
0e574af1 | 1656 | nfs_fattr_init(fattr); |
1da177e4 | 1657 | |
98a8e323 | 1658 | cred = rpc_lookup_cred(); |
08e9eac4 TM |
1659 | if (IS_ERR(cred)) |
1660 | return PTR_ERR(cred); | |
d530838b TM |
1661 | |
1662 | /* Search for an existing open(O_WRITE) file */ | |
1663 | ctx = nfs_find_open_context(inode, cred, FMODE_WRITE); | |
1664 | if (ctx != NULL) | |
1665 | state = ctx->state; | |
08e9eac4 | 1666 | |
3e4f6290 | 1667 | status = nfs4_do_setattr(inode, fattr, sattr, state); |
65e4308d TM |
1668 | if (status == 0) |
1669 | nfs_setattr_update_inode(inode, sattr); | |
d530838b TM |
1670 | if (ctx != NULL) |
1671 | put_nfs_open_context(ctx); | |
08e9eac4 | 1672 | put_rpccred(cred); |
1da177e4 LT |
1673 | return status; |
1674 | } | |
1675 | ||
56659e99 TM |
1676 | static int _nfs4_proc_lookupfh(struct nfs_server *server, const struct nfs_fh *dirfh, |
1677 | const struct qstr *name, struct nfs_fh *fhandle, | |
2b3de441 DH |
1678 | struct nfs_fattr *fattr) |
1679 | { | |
1680 | int status; | |
1681 | struct nfs4_lookup_arg args = { | |
1682 | .bitmask = server->attr_bitmask, | |
1683 | .dir_fh = dirfh, | |
1684 | .name = name, | |
1685 | }; | |
1686 | struct nfs4_lookup_res res = { | |
1687 | .server = server, | |
1688 | .fattr = fattr, | |
1689 | .fh = fhandle, | |
1690 | }; | |
1691 | struct rpc_message msg = { | |
1692 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOOKUP], | |
1693 | .rpc_argp = &args, | |
1694 | .rpc_resp = &res, | |
1695 | }; | |
1696 | ||
1697 | nfs_fattr_init(fattr); | |
1698 | ||
1699 | dprintk("NFS call lookupfh %s\n", name->name); | |
1700 | status = rpc_call_sync(server->client, &msg, 0); | |
1701 | dprintk("NFS reply lookupfh: %d\n", status); | |
2b3de441 DH |
1702 | return status; |
1703 | } | |
1704 | ||
1705 | static int nfs4_proc_lookupfh(struct nfs_server *server, struct nfs_fh *dirfh, | |
1706 | struct qstr *name, struct nfs_fh *fhandle, | |
1707 | struct nfs_fattr *fattr) | |
1708 | { | |
1709 | struct nfs4_exception exception = { }; | |
1710 | int err; | |
1711 | do { | |
4e56e082 TM |
1712 | err = _nfs4_proc_lookupfh(server, dirfh, name, fhandle, fattr); |
1713 | /* FIXME: !!!! */ | |
1714 | if (err == -NFS4ERR_MOVED) { | |
1715 | err = -EREMOTE; | |
1716 | break; | |
1717 | } | |
1718 | err = nfs4_handle_exception(server, err, &exception); | |
2b3de441 DH |
1719 | } while (exception.retry); |
1720 | return err; | |
1721 | } | |
1722 | ||
56659e99 | 1723 | static int _nfs4_proc_lookup(struct inode *dir, const struct qstr *name, |
1da177e4 LT |
1724 | struct nfs_fh *fhandle, struct nfs_fattr *fattr) |
1725 | { | |
4e56e082 | 1726 | int status; |
1da177e4 LT |
1727 | |
1728 | dprintk("NFS call lookup %s\n", name->name); | |
4e56e082 | 1729 | status = _nfs4_proc_lookupfh(NFS_SERVER(dir), NFS_FH(dir), name, fhandle, fattr); |
6b97fd3d MN |
1730 | if (status == -NFS4ERR_MOVED) |
1731 | status = nfs4_get_referral(dir, name, fattr, fhandle); | |
1da177e4 LT |
1732 | dprintk("NFS reply lookup: %d\n", status); |
1733 | return status; | |
1734 | } | |
1735 | ||
1736 | static int nfs4_proc_lookup(struct inode *dir, struct qstr *name, struct nfs_fh *fhandle, struct nfs_fattr *fattr) | |
1737 | { | |
1738 | struct nfs4_exception exception = { }; | |
1739 | int err; | |
1740 | do { | |
1741 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
1742 | _nfs4_proc_lookup(dir, name, fhandle, fattr), | |
1743 | &exception); | |
1744 | } while (exception.retry); | |
1745 | return err; | |
1746 | } | |
1747 | ||
1748 | static int _nfs4_proc_access(struct inode *inode, struct nfs_access_entry *entry) | |
1749 | { | |
76b32999 TM |
1750 | struct nfs_server *server = NFS_SERVER(inode); |
1751 | struct nfs_fattr fattr; | |
1da177e4 LT |
1752 | struct nfs4_accessargs args = { |
1753 | .fh = NFS_FH(inode), | |
76b32999 TM |
1754 | .bitmask = server->attr_bitmask, |
1755 | }; | |
1756 | struct nfs4_accessres res = { | |
1757 | .server = server, | |
1758 | .fattr = &fattr, | |
1da177e4 | 1759 | }; |
1da177e4 LT |
1760 | struct rpc_message msg = { |
1761 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_ACCESS], | |
1762 | .rpc_argp = &args, | |
1763 | .rpc_resp = &res, | |
1764 | .rpc_cred = entry->cred, | |
1765 | }; | |
1766 | int mode = entry->mask; | |
1767 | int status; | |
1768 | ||
1769 | /* | |
1770 | * Determine which access bits we want to ask for... | |
1771 | */ | |
1772 | if (mode & MAY_READ) | |
1773 | args.access |= NFS4_ACCESS_READ; | |
1774 | if (S_ISDIR(inode->i_mode)) { | |
1775 | if (mode & MAY_WRITE) | |
1776 | args.access |= NFS4_ACCESS_MODIFY | NFS4_ACCESS_EXTEND | NFS4_ACCESS_DELETE; | |
1777 | if (mode & MAY_EXEC) | |
1778 | args.access |= NFS4_ACCESS_LOOKUP; | |
1779 | } else { | |
1780 | if (mode & MAY_WRITE) | |
1781 | args.access |= NFS4_ACCESS_MODIFY | NFS4_ACCESS_EXTEND; | |
1782 | if (mode & MAY_EXEC) | |
1783 | args.access |= NFS4_ACCESS_EXECUTE; | |
1784 | } | |
76b32999 | 1785 | nfs_fattr_init(&fattr); |
1da177e4 LT |
1786 | status = rpc_call_sync(NFS_CLIENT(inode), &msg, 0); |
1787 | if (!status) { | |
1788 | entry->mask = 0; | |
1789 | if (res.access & NFS4_ACCESS_READ) | |
1790 | entry->mask |= MAY_READ; | |
1791 | if (res.access & (NFS4_ACCESS_MODIFY | NFS4_ACCESS_EXTEND | NFS4_ACCESS_DELETE)) | |
1792 | entry->mask |= MAY_WRITE; | |
1793 | if (res.access & (NFS4_ACCESS_LOOKUP|NFS4_ACCESS_EXECUTE)) | |
1794 | entry->mask |= MAY_EXEC; | |
76b32999 | 1795 | nfs_refresh_inode(inode, &fattr); |
1da177e4 LT |
1796 | } |
1797 | return status; | |
1798 | } | |
1799 | ||
1800 | static int nfs4_proc_access(struct inode *inode, struct nfs_access_entry *entry) | |
1801 | { | |
1802 | struct nfs4_exception exception = { }; | |
1803 | int err; | |
1804 | do { | |
1805 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
1806 | _nfs4_proc_access(inode, entry), | |
1807 | &exception); | |
1808 | } while (exception.retry); | |
1809 | return err; | |
1810 | } | |
1811 | ||
1812 | /* | |
1813 | * TODO: For the time being, we don't try to get any attributes | |
1814 | * along with any of the zero-copy operations READ, READDIR, | |
1815 | * READLINK, WRITE. | |
1816 | * | |
1817 | * In the case of the first three, we want to put the GETATTR | |
1818 | * after the read-type operation -- this is because it is hard | |
1819 | * to predict the length of a GETATTR response in v4, and thus | |
1820 | * align the READ data correctly. This means that the GETATTR | |
1821 | * may end up partially falling into the page cache, and we should | |
1822 | * shift it into the 'tail' of the xdr_buf before processing. | |
1823 | * To do this efficiently, we need to know the total length | |
1824 | * of data received, which doesn't seem to be available outside | |
1825 | * of the RPC layer. | |
1826 | * | |
1827 | * In the case of WRITE, we also want to put the GETATTR after | |
1828 | * the operation -- in this case because we want to make sure | |
1829 | * we get the post-operation mtime and size. This means that | |
1830 | * we can't use xdr_encode_pages() as written: we need a variant | |
1831 | * of it which would leave room in the 'tail' iovec. | |
1832 | * | |
1833 | * Both of these changes to the XDR layer would in fact be quite | |
1834 | * minor, but I decided to leave them for a subsequent patch. | |
1835 | */ | |
1836 | static int _nfs4_proc_readlink(struct inode *inode, struct page *page, | |
1837 | unsigned int pgbase, unsigned int pglen) | |
1838 | { | |
1839 | struct nfs4_readlink args = { | |
1840 | .fh = NFS_FH(inode), | |
1841 | .pgbase = pgbase, | |
1842 | .pglen = pglen, | |
1843 | .pages = &page, | |
1844 | }; | |
1845 | struct rpc_message msg = { | |
1846 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READLINK], | |
1847 | .rpc_argp = &args, | |
1848 | .rpc_resp = NULL, | |
1849 | }; | |
1850 | ||
1851 | return rpc_call_sync(NFS_CLIENT(inode), &msg, 0); | |
1852 | } | |
1853 | ||
1854 | static int nfs4_proc_readlink(struct inode *inode, struct page *page, | |
1855 | unsigned int pgbase, unsigned int pglen) | |
1856 | { | |
1857 | struct nfs4_exception exception = { }; | |
1858 | int err; | |
1859 | do { | |
1860 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
1861 | _nfs4_proc_readlink(inode, page, pgbase, pglen), | |
1862 | &exception); | |
1863 | } while (exception.retry); | |
1864 | return err; | |
1865 | } | |
1866 | ||
1da177e4 LT |
1867 | /* |
1868 | * Got race? | |
1869 | * We will need to arrange for the VFS layer to provide an atomic open. | |
1870 | * Until then, this create/open method is prone to inefficiency and race | |
1871 | * conditions due to the lookup, create, and open VFS calls from sys_open() | |
1872 | * placed on the wire. | |
1873 | * | |
1874 | * Given the above sorry state of affairs, I'm simply sending an OPEN. | |
1875 | * The file will be opened again in the subsequent VFS open call | |
1876 | * (nfs4_proc_file_open). | |
1877 | * | |
1878 | * The open for read will just hang around to be used by any process that | |
1879 | * opens the file O_RDONLY. This will all be resolved with the VFS changes. | |
1880 | */ | |
1881 | ||
1882 | static int | |
1883 | nfs4_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr, | |
02a913a7 | 1884 | int flags, struct nameidata *nd) |
1da177e4 | 1885 | { |
ad389da7 | 1886 | struct path path = { |
4ac91378 | 1887 | .mnt = nd->path.mnt, |
ad389da7 TM |
1888 | .dentry = dentry, |
1889 | }; | |
1da177e4 LT |
1890 | struct nfs4_state *state; |
1891 | struct rpc_cred *cred; | |
1892 | int status = 0; | |
1893 | ||
98a8e323 | 1894 | cred = rpc_lookup_cred(); |
1da177e4 LT |
1895 | if (IS_ERR(cred)) { |
1896 | status = PTR_ERR(cred); | |
1897 | goto out; | |
1898 | } | |
ad389da7 | 1899 | state = nfs4_do_open(dir, &path, flags, sattr, cred); |
1da177e4 | 1900 | put_rpccred(cred); |
d4d9cdcb | 1901 | d_drop(dentry); |
1da177e4 LT |
1902 | if (IS_ERR(state)) { |
1903 | status = PTR_ERR(state); | |
1904 | goto out; | |
1905 | } | |
d4d9cdcb | 1906 | d_add(dentry, igrab(state->inode)); |
d75340cc | 1907 | nfs_set_verifier(dentry, nfs_save_change_attribute(dir)); |
1da177e4 LT |
1908 | if (flags & O_EXCL) { |
1909 | struct nfs_fattr fattr; | |
3e4f6290 | 1910 | status = nfs4_do_setattr(state->inode, &fattr, sattr, state); |
02a913a7 | 1911 | if (status == 0) |
65e4308d | 1912 | nfs_setattr_update_inode(state->inode, sattr); |
aa53ed54 | 1913 | nfs_post_op_update_inode(state->inode, &fattr); |
02a913a7 | 1914 | } |
ad389da7 | 1915 | if (status == 0 && (nd->flags & LOOKUP_OPEN) != 0) |
4a35bd41 | 1916 | status = nfs4_intent_set_file(nd, &path, state); |
02a913a7 | 1917 | else |
a49c3c77 | 1918 | nfs4_close_sync(&path, state, flags); |
1da177e4 LT |
1919 | out: |
1920 | return status; | |
1921 | } | |
1922 | ||
1923 | static int _nfs4_proc_remove(struct inode *dir, struct qstr *name) | |
1924 | { | |
16e42959 | 1925 | struct nfs_server *server = NFS_SERVER(dir); |
4fdc17b2 | 1926 | struct nfs_removeargs args = { |
1da177e4 | 1927 | .fh = NFS_FH(dir), |
4fdc17b2 TM |
1928 | .name.len = name->len, |
1929 | .name.name = name->name, | |
16e42959 TM |
1930 | .bitmask = server->attr_bitmask, |
1931 | }; | |
4fdc17b2 | 1932 | struct nfs_removeres res = { |
16e42959 | 1933 | .server = server, |
1da177e4 | 1934 | }; |
1da177e4 | 1935 | struct rpc_message msg = { |
4fdc17b2 TM |
1936 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_REMOVE], |
1937 | .rpc_argp = &args, | |
1938 | .rpc_resp = &res, | |
1da177e4 LT |
1939 | }; |
1940 | int status; | |
1941 | ||
4fdc17b2 | 1942 | nfs_fattr_init(&res.dir_attr); |
16e42959 TM |
1943 | status = rpc_call_sync(server->client, &msg, 0); |
1944 | if (status == 0) { | |
1945 | update_changeattr(dir, &res.cinfo); | |
4fdc17b2 | 1946 | nfs_post_op_update_inode(dir, &res.dir_attr); |
16e42959 | 1947 | } |
1da177e4 LT |
1948 | return status; |
1949 | } | |
1950 | ||
1951 | static int nfs4_proc_remove(struct inode *dir, struct qstr *name) | |
1952 | { | |
1953 | struct nfs4_exception exception = { }; | |
1954 | int err; | |
1955 | do { | |
1956 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
1957 | _nfs4_proc_remove(dir, name), | |
1958 | &exception); | |
1959 | } while (exception.retry); | |
1960 | return err; | |
1961 | } | |
1962 | ||
e4eff1a6 | 1963 | static void nfs4_proc_unlink_setup(struct rpc_message *msg, struct inode *dir) |
1da177e4 | 1964 | { |
e4eff1a6 TM |
1965 | struct nfs_server *server = NFS_SERVER(dir); |
1966 | struct nfs_removeargs *args = msg->rpc_argp; | |
1967 | struct nfs_removeres *res = msg->rpc_resp; | |
1da177e4 | 1968 | |
e4eff1a6 TM |
1969 | args->bitmask = server->attr_bitmask; |
1970 | res->server = server; | |
1da177e4 | 1971 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_REMOVE]; |
1da177e4 LT |
1972 | } |
1973 | ||
e4eff1a6 | 1974 | static int nfs4_proc_unlink_done(struct rpc_task *task, struct inode *dir) |
1da177e4 | 1975 | { |
e4eff1a6 TM |
1976 | struct nfs_removeres *res = task->tk_msg.rpc_resp; |
1977 | ||
1978 | if (nfs4_async_handle_error(task, res->server) == -EAGAIN) | |
1979 | return 0; | |
1980 | update_changeattr(dir, &res->cinfo); | |
1981 | nfs_post_op_update_inode(dir, &res->dir_attr); | |
1982 | return 1; | |
1da177e4 LT |
1983 | } |
1984 | ||
1985 | static int _nfs4_proc_rename(struct inode *old_dir, struct qstr *old_name, | |
1986 | struct inode *new_dir, struct qstr *new_name) | |
1987 | { | |
6caf2c82 | 1988 | struct nfs_server *server = NFS_SERVER(old_dir); |
1da177e4 LT |
1989 | struct nfs4_rename_arg arg = { |
1990 | .old_dir = NFS_FH(old_dir), | |
1991 | .new_dir = NFS_FH(new_dir), | |
1992 | .old_name = old_name, | |
1993 | .new_name = new_name, | |
6caf2c82 TM |
1994 | .bitmask = server->attr_bitmask, |
1995 | }; | |
1996 | struct nfs_fattr old_fattr, new_fattr; | |
1997 | struct nfs4_rename_res res = { | |
1998 | .server = server, | |
1999 | .old_fattr = &old_fattr, | |
2000 | .new_fattr = &new_fattr, | |
1da177e4 | 2001 | }; |
1da177e4 LT |
2002 | struct rpc_message msg = { |
2003 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENAME], | |
2004 | .rpc_argp = &arg, | |
2005 | .rpc_resp = &res, | |
2006 | }; | |
2007 | int status; | |
2008 | ||
6caf2c82 TM |
2009 | nfs_fattr_init(res.old_fattr); |
2010 | nfs_fattr_init(res.new_fattr); | |
2011 | status = rpc_call_sync(server->client, &msg, 0); | |
1da177e4 LT |
2012 | |
2013 | if (!status) { | |
2014 | update_changeattr(old_dir, &res.old_cinfo); | |
6caf2c82 | 2015 | nfs_post_op_update_inode(old_dir, res.old_fattr); |
1da177e4 | 2016 | update_changeattr(new_dir, &res.new_cinfo); |
6caf2c82 | 2017 | nfs_post_op_update_inode(new_dir, res.new_fattr); |
1da177e4 LT |
2018 | } |
2019 | return status; | |
2020 | } | |
2021 | ||
2022 | static int nfs4_proc_rename(struct inode *old_dir, struct qstr *old_name, | |
2023 | struct inode *new_dir, struct qstr *new_name) | |
2024 | { | |
2025 | struct nfs4_exception exception = { }; | |
2026 | int err; | |
2027 | do { | |
2028 | err = nfs4_handle_exception(NFS_SERVER(old_dir), | |
2029 | _nfs4_proc_rename(old_dir, old_name, | |
2030 | new_dir, new_name), | |
2031 | &exception); | |
2032 | } while (exception.retry); | |
2033 | return err; | |
2034 | } | |
2035 | ||
2036 | static int _nfs4_proc_link(struct inode *inode, struct inode *dir, struct qstr *name) | |
2037 | { | |
91ba2eee | 2038 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 LT |
2039 | struct nfs4_link_arg arg = { |
2040 | .fh = NFS_FH(inode), | |
2041 | .dir_fh = NFS_FH(dir), | |
2042 | .name = name, | |
91ba2eee TM |
2043 | .bitmask = server->attr_bitmask, |
2044 | }; | |
2045 | struct nfs_fattr fattr, dir_attr; | |
2046 | struct nfs4_link_res res = { | |
2047 | .server = server, | |
2048 | .fattr = &fattr, | |
2049 | .dir_attr = &dir_attr, | |
1da177e4 | 2050 | }; |
1da177e4 LT |
2051 | struct rpc_message msg = { |
2052 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LINK], | |
2053 | .rpc_argp = &arg, | |
91ba2eee | 2054 | .rpc_resp = &res, |
1da177e4 LT |
2055 | }; |
2056 | int status; | |
2057 | ||
91ba2eee TM |
2058 | nfs_fattr_init(res.fattr); |
2059 | nfs_fattr_init(res.dir_attr); | |
2060 | status = rpc_call_sync(server->client, &msg, 0); | |
2061 | if (!status) { | |
2062 | update_changeattr(dir, &res.cinfo); | |
2063 | nfs_post_op_update_inode(dir, res.dir_attr); | |
73a3d07c | 2064 | nfs_post_op_update_inode(inode, res.fattr); |
91ba2eee | 2065 | } |
1da177e4 LT |
2066 | |
2067 | return status; | |
2068 | } | |
2069 | ||
2070 | static int nfs4_proc_link(struct inode *inode, struct inode *dir, struct qstr *name) | |
2071 | { | |
2072 | struct nfs4_exception exception = { }; | |
2073 | int err; | |
2074 | do { | |
2075 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
2076 | _nfs4_proc_link(inode, dir, name), | |
2077 | &exception); | |
2078 | } while (exception.retry); | |
2079 | return err; | |
2080 | } | |
2081 | ||
4f390c15 | 2082 | static int _nfs4_proc_symlink(struct inode *dir, struct dentry *dentry, |
94a6d753 | 2083 | struct page *page, unsigned int len, struct iattr *sattr) |
1da177e4 LT |
2084 | { |
2085 | struct nfs_server *server = NFS_SERVER(dir); | |
4f390c15 CL |
2086 | struct nfs_fh fhandle; |
2087 | struct nfs_fattr fattr, dir_fattr; | |
1da177e4 LT |
2088 | struct nfs4_create_arg arg = { |
2089 | .dir_fh = NFS_FH(dir), | |
2090 | .server = server, | |
4f390c15 | 2091 | .name = &dentry->d_name, |
1da177e4 LT |
2092 | .attrs = sattr, |
2093 | .ftype = NF4LNK, | |
2094 | .bitmask = server->attr_bitmask, | |
2095 | }; | |
2096 | struct nfs4_create_res res = { | |
2097 | .server = server, | |
4f390c15 CL |
2098 | .fh = &fhandle, |
2099 | .fattr = &fattr, | |
56ae19f3 | 2100 | .dir_fattr = &dir_fattr, |
1da177e4 LT |
2101 | }; |
2102 | struct rpc_message msg = { | |
2103 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SYMLINK], | |
2104 | .rpc_argp = &arg, | |
2105 | .rpc_resp = &res, | |
2106 | }; | |
2107 | int status; | |
2108 | ||
94a6d753 | 2109 | if (len > NFS4_MAXPATHLEN) |
1da177e4 | 2110 | return -ENAMETOOLONG; |
4f390c15 | 2111 | |
94a6d753 CL |
2112 | arg.u.symlink.pages = &page; |
2113 | arg.u.symlink.len = len; | |
4f390c15 | 2114 | nfs_fattr_init(&fattr); |
56ae19f3 | 2115 | nfs_fattr_init(&dir_fattr); |
1da177e4 LT |
2116 | |
2117 | status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0); | |
4f390c15 | 2118 | if (!status) { |
1da177e4 | 2119 | update_changeattr(dir, &res.dir_cinfo); |
4f390c15 CL |
2120 | nfs_post_op_update_inode(dir, res.dir_fattr); |
2121 | status = nfs_instantiate(dentry, &fhandle, &fattr); | |
2122 | } | |
1da177e4 LT |
2123 | return status; |
2124 | } | |
2125 | ||
4f390c15 | 2126 | static int nfs4_proc_symlink(struct inode *dir, struct dentry *dentry, |
94a6d753 | 2127 | struct page *page, unsigned int len, struct iattr *sattr) |
1da177e4 LT |
2128 | { |
2129 | struct nfs4_exception exception = { }; | |
2130 | int err; | |
2131 | do { | |
2132 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
94a6d753 CL |
2133 | _nfs4_proc_symlink(dir, dentry, page, |
2134 | len, sattr), | |
1da177e4 LT |
2135 | &exception); |
2136 | } while (exception.retry); | |
2137 | return err; | |
2138 | } | |
2139 | ||
2140 | static int _nfs4_proc_mkdir(struct inode *dir, struct dentry *dentry, | |
2141 | struct iattr *sattr) | |
2142 | { | |
2143 | struct nfs_server *server = NFS_SERVER(dir); | |
2144 | struct nfs_fh fhandle; | |
56ae19f3 | 2145 | struct nfs_fattr fattr, dir_fattr; |
1da177e4 LT |
2146 | struct nfs4_create_arg arg = { |
2147 | .dir_fh = NFS_FH(dir), | |
2148 | .server = server, | |
2149 | .name = &dentry->d_name, | |
2150 | .attrs = sattr, | |
2151 | .ftype = NF4DIR, | |
2152 | .bitmask = server->attr_bitmask, | |
2153 | }; | |
2154 | struct nfs4_create_res res = { | |
2155 | .server = server, | |
2156 | .fh = &fhandle, | |
2157 | .fattr = &fattr, | |
56ae19f3 | 2158 | .dir_fattr = &dir_fattr, |
1da177e4 LT |
2159 | }; |
2160 | struct rpc_message msg = { | |
2161 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CREATE], | |
2162 | .rpc_argp = &arg, | |
2163 | .rpc_resp = &res, | |
2164 | }; | |
2165 | int status; | |
2166 | ||
0e574af1 | 2167 | nfs_fattr_init(&fattr); |
56ae19f3 | 2168 | nfs_fattr_init(&dir_fattr); |
1da177e4 LT |
2169 | |
2170 | status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0); | |
2171 | if (!status) { | |
2172 | update_changeattr(dir, &res.dir_cinfo); | |
56ae19f3 | 2173 | nfs_post_op_update_inode(dir, res.dir_fattr); |
1da177e4 LT |
2174 | status = nfs_instantiate(dentry, &fhandle, &fattr); |
2175 | } | |
2176 | return status; | |
2177 | } | |
2178 | ||
2179 | static int nfs4_proc_mkdir(struct inode *dir, struct dentry *dentry, | |
2180 | struct iattr *sattr) | |
2181 | { | |
2182 | struct nfs4_exception exception = { }; | |
2183 | int err; | |
2184 | do { | |
2185 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
2186 | _nfs4_proc_mkdir(dir, dentry, sattr), | |
2187 | &exception); | |
2188 | } while (exception.retry); | |
2189 | return err; | |
2190 | } | |
2191 | ||
2192 | static int _nfs4_proc_readdir(struct dentry *dentry, struct rpc_cred *cred, | |
2193 | u64 cookie, struct page *page, unsigned int count, int plus) | |
2194 | { | |
2195 | struct inode *dir = dentry->d_inode; | |
2196 | struct nfs4_readdir_arg args = { | |
2197 | .fh = NFS_FH(dir), | |
2198 | .pages = &page, | |
2199 | .pgbase = 0, | |
2200 | .count = count, | |
2201 | .bitmask = NFS_SERVER(dentry->d_inode)->attr_bitmask, | |
2202 | }; | |
2203 | struct nfs4_readdir_res res; | |
2204 | struct rpc_message msg = { | |
2205 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READDIR], | |
2206 | .rpc_argp = &args, | |
2207 | .rpc_resp = &res, | |
2208 | .rpc_cred = cred, | |
2209 | }; | |
2210 | int status; | |
2211 | ||
3110ff80 | 2212 | dprintk("%s: dentry = %s/%s, cookie = %Lu\n", __func__, |
eadf4598 TM |
2213 | dentry->d_parent->d_name.name, |
2214 | dentry->d_name.name, | |
2215 | (unsigned long long)cookie); | |
1da177e4 LT |
2216 | nfs4_setup_readdir(cookie, NFS_COOKIEVERF(dir), dentry, &args); |
2217 | res.pgbase = args.pgbase; | |
2218 | status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0); | |
2219 | if (status == 0) | |
2220 | memcpy(NFS_COOKIEVERF(dir), res.verifier.data, NFS4_VERIFIER_SIZE); | |
c4812998 TM |
2221 | |
2222 | nfs_invalidate_atime(dir); | |
2223 | ||
3110ff80 | 2224 | dprintk("%s: returns %d\n", __func__, status); |
1da177e4 LT |
2225 | return status; |
2226 | } | |
2227 | ||
2228 | static int nfs4_proc_readdir(struct dentry *dentry, struct rpc_cred *cred, | |
2229 | u64 cookie, struct page *page, unsigned int count, int plus) | |
2230 | { | |
2231 | struct nfs4_exception exception = { }; | |
2232 | int err; | |
2233 | do { | |
2234 | err = nfs4_handle_exception(NFS_SERVER(dentry->d_inode), | |
2235 | _nfs4_proc_readdir(dentry, cred, cookie, | |
2236 | page, count, plus), | |
2237 | &exception); | |
2238 | } while (exception.retry); | |
2239 | return err; | |
2240 | } | |
2241 | ||
2242 | static int _nfs4_proc_mknod(struct inode *dir, struct dentry *dentry, | |
2243 | struct iattr *sattr, dev_t rdev) | |
2244 | { | |
2245 | struct nfs_server *server = NFS_SERVER(dir); | |
2246 | struct nfs_fh fh; | |
56ae19f3 | 2247 | struct nfs_fattr fattr, dir_fattr; |
1da177e4 LT |
2248 | struct nfs4_create_arg arg = { |
2249 | .dir_fh = NFS_FH(dir), | |
2250 | .server = server, | |
2251 | .name = &dentry->d_name, | |
2252 | .attrs = sattr, | |
2253 | .bitmask = server->attr_bitmask, | |
2254 | }; | |
2255 | struct nfs4_create_res res = { | |
2256 | .server = server, | |
2257 | .fh = &fh, | |
2258 | .fattr = &fattr, | |
56ae19f3 | 2259 | .dir_fattr = &dir_fattr, |
1da177e4 LT |
2260 | }; |
2261 | struct rpc_message msg = { | |
2262 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CREATE], | |
2263 | .rpc_argp = &arg, | |
2264 | .rpc_resp = &res, | |
2265 | }; | |
2266 | int status; | |
2267 | int mode = sattr->ia_mode; | |
2268 | ||
0e574af1 | 2269 | nfs_fattr_init(&fattr); |
56ae19f3 | 2270 | nfs_fattr_init(&dir_fattr); |
1da177e4 LT |
2271 | |
2272 | BUG_ON(!(sattr->ia_valid & ATTR_MODE)); | |
2273 | BUG_ON(!S_ISFIFO(mode) && !S_ISBLK(mode) && !S_ISCHR(mode) && !S_ISSOCK(mode)); | |
2274 | if (S_ISFIFO(mode)) | |
2275 | arg.ftype = NF4FIFO; | |
2276 | else if (S_ISBLK(mode)) { | |
2277 | arg.ftype = NF4BLK; | |
2278 | arg.u.device.specdata1 = MAJOR(rdev); | |
2279 | arg.u.device.specdata2 = MINOR(rdev); | |
2280 | } | |
2281 | else if (S_ISCHR(mode)) { | |
2282 | arg.ftype = NF4CHR; | |
2283 | arg.u.device.specdata1 = MAJOR(rdev); | |
2284 | arg.u.device.specdata2 = MINOR(rdev); | |
2285 | } | |
2286 | else | |
2287 | arg.ftype = NF4SOCK; | |
2288 | ||
2289 | status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0); | |
2290 | if (status == 0) { | |
2291 | update_changeattr(dir, &res.dir_cinfo); | |
56ae19f3 | 2292 | nfs_post_op_update_inode(dir, res.dir_fattr); |
1da177e4 LT |
2293 | status = nfs_instantiate(dentry, &fh, &fattr); |
2294 | } | |
2295 | return status; | |
2296 | } | |
2297 | ||
2298 | static int nfs4_proc_mknod(struct inode *dir, struct dentry *dentry, | |
2299 | struct iattr *sattr, dev_t rdev) | |
2300 | { | |
2301 | struct nfs4_exception exception = { }; | |
2302 | int err; | |
2303 | do { | |
2304 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
2305 | _nfs4_proc_mknod(dir, dentry, sattr, rdev), | |
2306 | &exception); | |
2307 | } while (exception.retry); | |
2308 | return err; | |
2309 | } | |
2310 | ||
2311 | static int _nfs4_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle, | |
2312 | struct nfs_fsstat *fsstat) | |
2313 | { | |
2314 | struct nfs4_statfs_arg args = { | |
2315 | .fh = fhandle, | |
2316 | .bitmask = server->attr_bitmask, | |
2317 | }; | |
2318 | struct rpc_message msg = { | |
2319 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_STATFS], | |
2320 | .rpc_argp = &args, | |
2321 | .rpc_resp = fsstat, | |
2322 | }; | |
2323 | ||
0e574af1 | 2324 | nfs_fattr_init(fsstat->fattr); |
1da177e4 LT |
2325 | return rpc_call_sync(server->client, &msg, 0); |
2326 | } | |
2327 | ||
2328 | static int nfs4_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsstat *fsstat) | |
2329 | { | |
2330 | struct nfs4_exception exception = { }; | |
2331 | int err; | |
2332 | do { | |
2333 | err = nfs4_handle_exception(server, | |
2334 | _nfs4_proc_statfs(server, fhandle, fsstat), | |
2335 | &exception); | |
2336 | } while (exception.retry); | |
2337 | return err; | |
2338 | } | |
2339 | ||
2340 | static int _nfs4_do_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, | |
2341 | struct nfs_fsinfo *fsinfo) | |
2342 | { | |
2343 | struct nfs4_fsinfo_arg args = { | |
2344 | .fh = fhandle, | |
2345 | .bitmask = server->attr_bitmask, | |
2346 | }; | |
2347 | struct rpc_message msg = { | |
2348 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FSINFO], | |
2349 | .rpc_argp = &args, | |
2350 | .rpc_resp = fsinfo, | |
2351 | }; | |
2352 | ||
2353 | return rpc_call_sync(server->client, &msg, 0); | |
2354 | } | |
2355 | ||
2356 | static int nfs4_do_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsinfo *fsinfo) | |
2357 | { | |
2358 | struct nfs4_exception exception = { }; | |
2359 | int err; | |
2360 | ||
2361 | do { | |
2362 | err = nfs4_handle_exception(server, | |
2363 | _nfs4_do_fsinfo(server, fhandle, fsinfo), | |
2364 | &exception); | |
2365 | } while (exception.retry); | |
2366 | return err; | |
2367 | } | |
2368 | ||
2369 | static int nfs4_proc_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsinfo *fsinfo) | |
2370 | { | |
0e574af1 | 2371 | nfs_fattr_init(fsinfo->fattr); |
1da177e4 LT |
2372 | return nfs4_do_fsinfo(server, fhandle, fsinfo); |
2373 | } | |
2374 | ||
2375 | static int _nfs4_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle, | |
2376 | struct nfs_pathconf *pathconf) | |
2377 | { | |
2378 | struct nfs4_pathconf_arg args = { | |
2379 | .fh = fhandle, | |
2380 | .bitmask = server->attr_bitmask, | |
2381 | }; | |
2382 | struct rpc_message msg = { | |
2383 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_PATHCONF], | |
2384 | .rpc_argp = &args, | |
2385 | .rpc_resp = pathconf, | |
2386 | }; | |
2387 | ||
2388 | /* None of the pathconf attributes are mandatory to implement */ | |
2389 | if ((args.bitmask[0] & nfs4_pathconf_bitmap[0]) == 0) { | |
2390 | memset(pathconf, 0, sizeof(*pathconf)); | |
2391 | return 0; | |
2392 | } | |
2393 | ||
0e574af1 | 2394 | nfs_fattr_init(pathconf->fattr); |
1da177e4 LT |
2395 | return rpc_call_sync(server->client, &msg, 0); |
2396 | } | |
2397 | ||
2398 | static int nfs4_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle, | |
2399 | struct nfs_pathconf *pathconf) | |
2400 | { | |
2401 | struct nfs4_exception exception = { }; | |
2402 | int err; | |
2403 | ||
2404 | do { | |
2405 | err = nfs4_handle_exception(server, | |
2406 | _nfs4_proc_pathconf(server, fhandle, pathconf), | |
2407 | &exception); | |
2408 | } while (exception.retry); | |
2409 | return err; | |
2410 | } | |
2411 | ||
ec06c096 | 2412 | static int nfs4_read_done(struct rpc_task *task, struct nfs_read_data *data) |
1da177e4 | 2413 | { |
ec06c096 | 2414 | struct nfs_server *server = NFS_SERVER(data->inode); |
1da177e4 | 2415 | |
ec06c096 | 2416 | if (nfs4_async_handle_error(task, server) == -EAGAIN) { |
1da177e4 | 2417 | rpc_restart_call(task); |
ec06c096 | 2418 | return -EAGAIN; |
1da177e4 | 2419 | } |
8850df99 TM |
2420 | |
2421 | nfs_invalidate_atime(data->inode); | |
1da177e4 | 2422 | if (task->tk_status > 0) |
ec06c096 TM |
2423 | renew_lease(server, data->timestamp); |
2424 | return 0; | |
1da177e4 LT |
2425 | } |
2426 | ||
bdc7f021 | 2427 | static void nfs4_proc_read_setup(struct nfs_read_data *data, struct rpc_message *msg) |
1da177e4 | 2428 | { |
1da177e4 | 2429 | data->timestamp = jiffies; |
bdc7f021 | 2430 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READ]; |
1da177e4 LT |
2431 | } |
2432 | ||
788e7a89 | 2433 | static int nfs4_write_done(struct rpc_task *task, struct nfs_write_data *data) |
1da177e4 | 2434 | { |
1da177e4 LT |
2435 | struct inode *inode = data->inode; |
2436 | ||
2437 | if (nfs4_async_handle_error(task, NFS_SERVER(inode)) == -EAGAIN) { | |
2438 | rpc_restart_call(task); | |
788e7a89 | 2439 | return -EAGAIN; |
1da177e4 | 2440 | } |
4f9838c7 | 2441 | if (task->tk_status >= 0) { |
1da177e4 | 2442 | renew_lease(NFS_SERVER(inode), data->timestamp); |
70ca8852 | 2443 | nfs_post_op_update_inode_force_wcc(inode, data->res.fattr); |
4f9838c7 | 2444 | } |
788e7a89 | 2445 | return 0; |
1da177e4 LT |
2446 | } |
2447 | ||
bdc7f021 | 2448 | static void nfs4_proc_write_setup(struct nfs_write_data *data, struct rpc_message *msg) |
1da177e4 | 2449 | { |
bdc7f021 TM |
2450 | struct nfs_server *server = NFS_SERVER(data->inode); |
2451 | ||
4f9838c7 TM |
2452 | data->args.bitmask = server->attr_bitmask; |
2453 | data->res.server = server; | |
1da177e4 LT |
2454 | data->timestamp = jiffies; |
2455 | ||
bdc7f021 | 2456 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_WRITE]; |
1da177e4 LT |
2457 | } |
2458 | ||
788e7a89 | 2459 | static int nfs4_commit_done(struct rpc_task *task, struct nfs_write_data *data) |
1da177e4 | 2460 | { |
1da177e4 LT |
2461 | struct inode *inode = data->inode; |
2462 | ||
2463 | if (nfs4_async_handle_error(task, NFS_SERVER(inode)) == -EAGAIN) { | |
2464 | rpc_restart_call(task); | |
788e7a89 | 2465 | return -EAGAIN; |
1da177e4 | 2466 | } |
9e08a3c5 | 2467 | nfs_refresh_inode(inode, data->res.fattr); |
788e7a89 | 2468 | return 0; |
1da177e4 LT |
2469 | } |
2470 | ||
bdc7f021 | 2471 | static void nfs4_proc_commit_setup(struct nfs_write_data *data, struct rpc_message *msg) |
1da177e4 | 2472 | { |
788e7a89 | 2473 | struct nfs_server *server = NFS_SERVER(data->inode); |
1da177e4 | 2474 | |
4f9838c7 TM |
2475 | data->args.bitmask = server->attr_bitmask; |
2476 | data->res.server = server; | |
bdc7f021 | 2477 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_COMMIT]; |
1da177e4 LT |
2478 | } |
2479 | ||
2480 | /* | |
2481 | * nfs4_proc_async_renew(): This is not one of the nfs_rpc_ops; it is a special | |
2482 | * standalone procedure for queueing an asynchronous RENEW. | |
2483 | */ | |
963d8fe5 | 2484 | static void nfs4_renew_done(struct rpc_task *task, void *data) |
1da177e4 | 2485 | { |
adfa6f98 | 2486 | struct nfs_client *clp = (struct nfs_client *)task->tk_msg.rpc_argp; |
963d8fe5 | 2487 | unsigned long timestamp = (unsigned long)data; |
1da177e4 LT |
2488 | |
2489 | if (task->tk_status < 0) { | |
2490 | switch (task->tk_status) { | |
2491 | case -NFS4ERR_STALE_CLIENTID: | |
2492 | case -NFS4ERR_EXPIRED: | |
2493 | case -NFS4ERR_CB_PATH_DOWN: | |
2494 | nfs4_schedule_state_recovery(clp); | |
2495 | } | |
2496 | return; | |
2497 | } | |
2498 | spin_lock(&clp->cl_lock); | |
2499 | if (time_before(clp->cl_last_renewal,timestamp)) | |
2500 | clp->cl_last_renewal = timestamp; | |
2501 | spin_unlock(&clp->cl_lock); | |
2502 | } | |
2503 | ||
963d8fe5 TM |
2504 | static const struct rpc_call_ops nfs4_renew_ops = { |
2505 | .rpc_call_done = nfs4_renew_done, | |
2506 | }; | |
2507 | ||
adfa6f98 | 2508 | int nfs4_proc_async_renew(struct nfs_client *clp, struct rpc_cred *cred) |
1da177e4 LT |
2509 | { |
2510 | struct rpc_message msg = { | |
2511 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENEW], | |
2512 | .rpc_argp = clp, | |
b4454fe1 | 2513 | .rpc_cred = cred, |
1da177e4 LT |
2514 | }; |
2515 | ||
2516 | return rpc_call_async(clp->cl_rpcclient, &msg, RPC_TASK_SOFT, | |
963d8fe5 | 2517 | &nfs4_renew_ops, (void *)jiffies); |
1da177e4 LT |
2518 | } |
2519 | ||
adfa6f98 | 2520 | int nfs4_proc_renew(struct nfs_client *clp, struct rpc_cred *cred) |
1da177e4 LT |
2521 | { |
2522 | struct rpc_message msg = { | |
2523 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENEW], | |
2524 | .rpc_argp = clp, | |
b4454fe1 | 2525 | .rpc_cred = cred, |
1da177e4 LT |
2526 | }; |
2527 | unsigned long now = jiffies; | |
2528 | int status; | |
2529 | ||
2530 | status = rpc_call_sync(clp->cl_rpcclient, &msg, 0); | |
2531 | if (status < 0) | |
2532 | return status; | |
2533 | spin_lock(&clp->cl_lock); | |
2534 | if (time_before(clp->cl_last_renewal,now)) | |
2535 | clp->cl_last_renewal = now; | |
2536 | spin_unlock(&clp->cl_lock); | |
2537 | return 0; | |
2538 | } | |
2539 | ||
aa1870af BF |
2540 | static inline int nfs4_server_supports_acls(struct nfs_server *server) |
2541 | { | |
2542 | return (server->caps & NFS_CAP_ACLS) | |
2543 | && (server->acl_bitmask & ACL4_SUPPORT_ALLOW_ACL) | |
2544 | && (server->acl_bitmask & ACL4_SUPPORT_DENY_ACL); | |
2545 | } | |
2546 | ||
2547 | /* Assuming that XATTR_SIZE_MAX is a multiple of PAGE_CACHE_SIZE, and that | |
2548 | * it's OK to put sizeof(void) * (XATTR_SIZE_MAX/PAGE_CACHE_SIZE) bytes on | |
2549 | * the stack. | |
2550 | */ | |
2551 | #define NFS4ACL_MAXPAGES (XATTR_SIZE_MAX >> PAGE_CACHE_SHIFT) | |
2552 | ||
2553 | static void buf_to_pages(const void *buf, size_t buflen, | |
2554 | struct page **pages, unsigned int *pgbase) | |
2555 | { | |
2556 | const void *p = buf; | |
2557 | ||
2558 | *pgbase = offset_in_page(buf); | |
2559 | p -= *pgbase; | |
2560 | while (p < buf + buflen) { | |
2561 | *(pages++) = virt_to_page(p); | |
2562 | p += PAGE_CACHE_SIZE; | |
2563 | } | |
2564 | } | |
2565 | ||
e50a1c2e BF |
2566 | struct nfs4_cached_acl { |
2567 | int cached; | |
2568 | size_t len; | |
3e9d4154 | 2569 | char data[0]; |
e50a1c2e BF |
2570 | }; |
2571 | ||
2572 | static void nfs4_set_cached_acl(struct inode *inode, struct nfs4_cached_acl *acl) | |
2573 | { | |
2574 | struct nfs_inode *nfsi = NFS_I(inode); | |
2575 | ||
2576 | spin_lock(&inode->i_lock); | |
2577 | kfree(nfsi->nfs4_acl); | |
2578 | nfsi->nfs4_acl = acl; | |
2579 | spin_unlock(&inode->i_lock); | |
2580 | } | |
2581 | ||
2582 | static void nfs4_zap_acl_attr(struct inode *inode) | |
2583 | { | |
2584 | nfs4_set_cached_acl(inode, NULL); | |
2585 | } | |
2586 | ||
2587 | static inline ssize_t nfs4_read_cached_acl(struct inode *inode, char *buf, size_t buflen) | |
2588 | { | |
2589 | struct nfs_inode *nfsi = NFS_I(inode); | |
2590 | struct nfs4_cached_acl *acl; | |
2591 | int ret = -ENOENT; | |
2592 | ||
2593 | spin_lock(&inode->i_lock); | |
2594 | acl = nfsi->nfs4_acl; | |
2595 | if (acl == NULL) | |
2596 | goto out; | |
2597 | if (buf == NULL) /* user is just asking for length */ | |
2598 | goto out_len; | |
2599 | if (acl->cached == 0) | |
2600 | goto out; | |
2601 | ret = -ERANGE; /* see getxattr(2) man page */ | |
2602 | if (acl->len > buflen) | |
2603 | goto out; | |
2604 | memcpy(buf, acl->data, acl->len); | |
2605 | out_len: | |
2606 | ret = acl->len; | |
2607 | out: | |
2608 | spin_unlock(&inode->i_lock); | |
2609 | return ret; | |
2610 | } | |
2611 | ||
2612 | static void nfs4_write_cached_acl(struct inode *inode, const char *buf, size_t acl_len) | |
2613 | { | |
2614 | struct nfs4_cached_acl *acl; | |
2615 | ||
2616 | if (buf && acl_len <= PAGE_SIZE) { | |
2617 | acl = kmalloc(sizeof(*acl) + acl_len, GFP_KERNEL); | |
2618 | if (acl == NULL) | |
2619 | goto out; | |
2620 | acl->cached = 1; | |
2621 | memcpy(acl->data, buf, acl_len); | |
2622 | } else { | |
2623 | acl = kmalloc(sizeof(*acl), GFP_KERNEL); | |
2624 | if (acl == NULL) | |
2625 | goto out; | |
2626 | acl->cached = 0; | |
2627 | } | |
2628 | acl->len = acl_len; | |
2629 | out: | |
2630 | nfs4_set_cached_acl(inode, acl); | |
2631 | } | |
2632 | ||
16b4289c | 2633 | static ssize_t __nfs4_get_acl_uncached(struct inode *inode, void *buf, size_t buflen) |
aa1870af | 2634 | { |
aa1870af BF |
2635 | struct page *pages[NFS4ACL_MAXPAGES]; |
2636 | struct nfs_getaclargs args = { | |
2637 | .fh = NFS_FH(inode), | |
2638 | .acl_pages = pages, | |
2639 | .acl_len = buflen, | |
2640 | }; | |
2641 | size_t resp_len = buflen; | |
e50a1c2e | 2642 | void *resp_buf; |
aa1870af BF |
2643 | struct rpc_message msg = { |
2644 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETACL], | |
2645 | .rpc_argp = &args, | |
2646 | .rpc_resp = &resp_len, | |
2647 | }; | |
e50a1c2e | 2648 | struct page *localpage = NULL; |
aa1870af BF |
2649 | int ret; |
2650 | ||
e50a1c2e BF |
2651 | if (buflen < PAGE_SIZE) { |
2652 | /* As long as we're doing a round trip to the server anyway, | |
2653 | * let's be prepared for a page of acl data. */ | |
2654 | localpage = alloc_page(GFP_KERNEL); | |
2655 | resp_buf = page_address(localpage); | |
2656 | if (localpage == NULL) | |
2657 | return -ENOMEM; | |
2658 | args.acl_pages[0] = localpage; | |
2659 | args.acl_pgbase = 0; | |
1d95db8e | 2660 | resp_len = args.acl_len = PAGE_SIZE; |
e50a1c2e BF |
2661 | } else { |
2662 | resp_buf = buf; | |
2663 | buf_to_pages(buf, buflen, args.acl_pages, &args.acl_pgbase); | |
2664 | } | |
aa1870af | 2665 | ret = rpc_call_sync(NFS_CLIENT(inode), &msg, 0); |
e50a1c2e BF |
2666 | if (ret) |
2667 | goto out_free; | |
2668 | if (resp_len > args.acl_len) | |
2669 | nfs4_write_cached_acl(inode, NULL, resp_len); | |
2670 | else | |
2671 | nfs4_write_cached_acl(inode, resp_buf, resp_len); | |
2672 | if (buf) { | |
2673 | ret = -ERANGE; | |
2674 | if (resp_len > buflen) | |
2675 | goto out_free; | |
2676 | if (localpage) | |
2677 | memcpy(buf, resp_buf, resp_len); | |
2678 | } | |
2679 | ret = resp_len; | |
2680 | out_free: | |
2681 | if (localpage) | |
2682 | __free_page(localpage); | |
aa1870af BF |
2683 | return ret; |
2684 | } | |
2685 | ||
16b4289c TM |
2686 | static ssize_t nfs4_get_acl_uncached(struct inode *inode, void *buf, size_t buflen) |
2687 | { | |
2688 | struct nfs4_exception exception = { }; | |
2689 | ssize_t ret; | |
2690 | do { | |
2691 | ret = __nfs4_get_acl_uncached(inode, buf, buflen); | |
2692 | if (ret >= 0) | |
2693 | break; | |
2694 | ret = nfs4_handle_exception(NFS_SERVER(inode), ret, &exception); | |
2695 | } while (exception.retry); | |
2696 | return ret; | |
2697 | } | |
2698 | ||
e50a1c2e BF |
2699 | static ssize_t nfs4_proc_get_acl(struct inode *inode, void *buf, size_t buflen) |
2700 | { | |
2701 | struct nfs_server *server = NFS_SERVER(inode); | |
2702 | int ret; | |
2703 | ||
2704 | if (!nfs4_server_supports_acls(server)) | |
2705 | return -EOPNOTSUPP; | |
2706 | ret = nfs_revalidate_inode(server, inode); | |
2707 | if (ret < 0) | |
2708 | return ret; | |
2709 | ret = nfs4_read_cached_acl(inode, buf, buflen); | |
2710 | if (ret != -ENOENT) | |
2711 | return ret; | |
2712 | return nfs4_get_acl_uncached(inode, buf, buflen); | |
2713 | } | |
2714 | ||
16b4289c | 2715 | static int __nfs4_proc_set_acl(struct inode *inode, const void *buf, size_t buflen) |
4b580ee3 BF |
2716 | { |
2717 | struct nfs_server *server = NFS_SERVER(inode); | |
2718 | struct page *pages[NFS4ACL_MAXPAGES]; | |
2719 | struct nfs_setaclargs arg = { | |
2720 | .fh = NFS_FH(inode), | |
2721 | .acl_pages = pages, | |
2722 | .acl_len = buflen, | |
2723 | }; | |
2724 | struct rpc_message msg = { | |
2725 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETACL], | |
2726 | .rpc_argp = &arg, | |
2727 | .rpc_resp = NULL, | |
2728 | }; | |
2729 | int ret; | |
2730 | ||
2731 | if (!nfs4_server_supports_acls(server)) | |
2732 | return -EOPNOTSUPP; | |
642ac549 | 2733 | nfs_inode_return_delegation(inode); |
4b580ee3 | 2734 | buf_to_pages(buf, buflen, arg.acl_pages, &arg.acl_pgbase); |
1f163415 | 2735 | ret = rpc_call_sync(NFS_CLIENT(inode), &msg, 0); |
08efa202 | 2736 | nfs_zap_caches(inode); |
4b580ee3 BF |
2737 | return ret; |
2738 | } | |
2739 | ||
16b4289c TM |
2740 | static int nfs4_proc_set_acl(struct inode *inode, const void *buf, size_t buflen) |
2741 | { | |
2742 | struct nfs4_exception exception = { }; | |
2743 | int err; | |
2744 | do { | |
2745 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
2746 | __nfs4_proc_set_acl(inode, buf, buflen), | |
2747 | &exception); | |
2748 | } while (exception.retry); | |
2749 | return err; | |
2750 | } | |
2751 | ||
1da177e4 | 2752 | static int |
faf5f49c | 2753 | nfs4_async_handle_error(struct rpc_task *task, const struct nfs_server *server) |
1da177e4 | 2754 | { |
7539bbab | 2755 | struct nfs_client *clp = server->nfs_client; |
1da177e4 LT |
2756 | |
2757 | if (!clp || task->tk_status >= 0) | |
2758 | return 0; | |
2759 | switch(task->tk_status) { | |
2760 | case -NFS4ERR_STALE_CLIENTID: | |
2761 | case -NFS4ERR_STALE_STATEID: | |
2762 | case -NFS4ERR_EXPIRED: | |
5d00837b | 2763 | rpc_sleep_on(&clp->cl_rpcwaitq, task, NULL); |
1da177e4 | 2764 | nfs4_schedule_state_recovery(clp); |
433fbe4c | 2765 | if (test_bit(NFS4CLNT_STATE_RECOVER, &clp->cl_state) == 0) |
fda13939 | 2766 | rpc_wake_up_queued_task(&clp->cl_rpcwaitq, task); |
1da177e4 LT |
2767 | task->tk_status = 0; |
2768 | return -EAGAIN; | |
1da177e4 | 2769 | case -NFS4ERR_DELAY: |
006ea73e CL |
2770 | nfs_inc_server_stats((struct nfs_server *) server, |
2771 | NFSIOS_DELAY); | |
2772 | case -NFS4ERR_GRACE: | |
1da177e4 LT |
2773 | rpc_delay(task, NFS4_POLL_RETRY_MAX); |
2774 | task->tk_status = 0; | |
2775 | return -EAGAIN; | |
2776 | case -NFS4ERR_OLD_STATEID: | |
2777 | task->tk_status = 0; | |
2778 | return -EAGAIN; | |
2779 | } | |
2780 | task->tk_status = nfs4_map_errors(task->tk_status); | |
2781 | return 0; | |
2782 | } | |
2783 | ||
150030b7 | 2784 | static int nfs4_wait_bit_killable(void *word) |
433fbe4c | 2785 | { |
150030b7 | 2786 | if (fatal_signal_pending(current)) |
433fbe4c TM |
2787 | return -ERESTARTSYS; |
2788 | schedule(); | |
2789 | return 0; | |
2790 | } | |
2791 | ||
adfa6f98 | 2792 | static int nfs4_wait_clnt_recover(struct rpc_clnt *clnt, struct nfs_client *clp) |
1da177e4 | 2793 | { |
433fbe4c | 2794 | int res; |
1da177e4 LT |
2795 | |
2796 | might_sleep(); | |
2797 | ||
e148582e TM |
2798 | rwsem_acquire(&clp->cl_sem.dep_map, 0, 0, _RET_IP_); |
2799 | ||
433fbe4c | 2800 | res = wait_on_bit(&clp->cl_state, NFS4CLNT_STATE_RECOVER, |
150030b7 | 2801 | nfs4_wait_bit_killable, TASK_KILLABLE); |
e148582e TM |
2802 | |
2803 | rwsem_release(&clp->cl_sem.dep_map, 1, _RET_IP_); | |
1da177e4 LT |
2804 | return res; |
2805 | } | |
2806 | ||
2807 | static int nfs4_delay(struct rpc_clnt *clnt, long *timeout) | |
2808 | { | |
1da177e4 LT |
2809 | int res = 0; |
2810 | ||
2811 | might_sleep(); | |
2812 | ||
2813 | if (*timeout <= 0) | |
2814 | *timeout = NFS4_POLL_RETRY_MIN; | |
2815 | if (*timeout > NFS4_POLL_RETRY_MAX) | |
2816 | *timeout = NFS4_POLL_RETRY_MAX; | |
150030b7 MW |
2817 | schedule_timeout_killable(*timeout); |
2818 | if (fatal_signal_pending(current)) | |
2819 | res = -ERESTARTSYS; | |
1da177e4 LT |
2820 | *timeout <<= 1; |
2821 | return res; | |
2822 | } | |
2823 | ||
2824 | /* This is the error handling routine for processes that are allowed | |
2825 | * to sleep. | |
2826 | */ | |
10afec90 | 2827 | static int nfs4_handle_exception(const struct nfs_server *server, int errorcode, struct nfs4_exception *exception) |
1da177e4 | 2828 | { |
7539bbab | 2829 | struct nfs_client *clp = server->nfs_client; |
1da177e4 LT |
2830 | int ret = errorcode; |
2831 | ||
2832 | exception->retry = 0; | |
2833 | switch(errorcode) { | |
2834 | case 0: | |
2835 | return 0; | |
2836 | case -NFS4ERR_STALE_CLIENTID: | |
2837 | case -NFS4ERR_STALE_STATEID: | |
2838 | case -NFS4ERR_EXPIRED: | |
433fbe4c | 2839 | nfs4_schedule_state_recovery(clp); |
1da177e4 LT |
2840 | ret = nfs4_wait_clnt_recover(server->client, clp); |
2841 | if (ret == 0) | |
2842 | exception->retry = 1; | |
2843 | break; | |
c514983d | 2844 | case -NFS4ERR_FILE_OPEN: |
1da177e4 LT |
2845 | case -NFS4ERR_GRACE: |
2846 | case -NFS4ERR_DELAY: | |
2847 | ret = nfs4_delay(server->client, &exception->timeout); | |
2c56617d TM |
2848 | if (ret != 0) |
2849 | break; | |
1da177e4 | 2850 | case -NFS4ERR_OLD_STATEID: |
2c56617d | 2851 | exception->retry = 1; |
1da177e4 LT |
2852 | } |
2853 | /* We failed to handle the error */ | |
2854 | return nfs4_map_errors(ret); | |
2855 | } | |
2856 | ||
adfa6f98 | 2857 | int nfs4_proc_setclientid(struct nfs_client *clp, u32 program, unsigned short port, struct rpc_cred *cred) |
1da177e4 LT |
2858 | { |
2859 | nfs4_verifier sc_verifier; | |
2860 | struct nfs4_setclientid setclientid = { | |
2861 | .sc_verifier = &sc_verifier, | |
2862 | .sc_prog = program, | |
2863 | }; | |
2864 | struct rpc_message msg = { | |
2865 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETCLIENTID], | |
2866 | .rpc_argp = &setclientid, | |
2867 | .rpc_resp = clp, | |
286d7d6a | 2868 | .rpc_cred = cred, |
1da177e4 | 2869 | }; |
bc4785cd | 2870 | __be32 *p; |
1da177e4 LT |
2871 | int loop = 0; |
2872 | int status; | |
2873 | ||
bc4785cd | 2874 | p = (__be32*)sc_verifier.data; |
1da177e4 LT |
2875 | *p++ = htonl((u32)clp->cl_boot_time.tv_sec); |
2876 | *p = htonl((u32)clp->cl_boot_time.tv_nsec); | |
2877 | ||
2878 | for(;;) { | |
2879 | setclientid.sc_name_len = scnprintf(setclientid.sc_name, | |
69dd716c | 2880 | sizeof(setclientid.sc_name), "%s/%s %s %s %u", |
d4d3c507 CL |
2881 | clp->cl_ipaddr, |
2882 | rpc_peeraddr2str(clp->cl_rpcclient, | |
2883 | RPC_DISPLAY_ADDR), | |
69dd716c TM |
2884 | rpc_peeraddr2str(clp->cl_rpcclient, |
2885 | RPC_DISPLAY_PROTO), | |
78ea323b | 2886 | clp->cl_rpcclient->cl_auth->au_ops->au_name, |
1da177e4 LT |
2887 | clp->cl_id_uniquifier); |
2888 | setclientid.sc_netid_len = scnprintf(setclientid.sc_netid, | |
d4d3c507 CL |
2889 | sizeof(setclientid.sc_netid), |
2890 | rpc_peeraddr2str(clp->cl_rpcclient, | |
2891 | RPC_DISPLAY_NETID)); | |
1da177e4 | 2892 | setclientid.sc_uaddr_len = scnprintf(setclientid.sc_uaddr, |
d4d3c507 | 2893 | sizeof(setclientid.sc_uaddr), "%s.%u.%u", |
1da177e4 LT |
2894 | clp->cl_ipaddr, port >> 8, port & 255); |
2895 | ||
2896 | status = rpc_call_sync(clp->cl_rpcclient, &msg, 0); | |
2897 | if (status != -NFS4ERR_CLID_INUSE) | |
2898 | break; | |
2899 | if (signalled()) | |
2900 | break; | |
2901 | if (loop++ & 1) | |
2902 | ssleep(clp->cl_lease_time + 1); | |
2903 | else | |
2904 | if (++clp->cl_id_uniquifier == 0) | |
2905 | break; | |
2906 | } | |
2907 | return status; | |
2908 | } | |
2909 | ||
adfa6f98 | 2910 | static int _nfs4_proc_setclientid_confirm(struct nfs_client *clp, struct rpc_cred *cred) |
1da177e4 LT |
2911 | { |
2912 | struct nfs_fsinfo fsinfo; | |
2913 | struct rpc_message msg = { | |
2914 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETCLIENTID_CONFIRM], | |
2915 | .rpc_argp = clp, | |
2916 | .rpc_resp = &fsinfo, | |
286d7d6a | 2917 | .rpc_cred = cred, |
1da177e4 LT |
2918 | }; |
2919 | unsigned long now; | |
2920 | int status; | |
2921 | ||
2922 | now = jiffies; | |
2923 | status = rpc_call_sync(clp->cl_rpcclient, &msg, 0); | |
2924 | if (status == 0) { | |
2925 | spin_lock(&clp->cl_lock); | |
2926 | clp->cl_lease_time = fsinfo.lease_time * HZ; | |
2927 | clp->cl_last_renewal = now; | |
58d9714a | 2928 | clear_bit(NFS4CLNT_LEASE_EXPIRED, &clp->cl_state); |
1da177e4 LT |
2929 | spin_unlock(&clp->cl_lock); |
2930 | } | |
2931 | return status; | |
2932 | } | |
2933 | ||
adfa6f98 | 2934 | int nfs4_proc_setclientid_confirm(struct nfs_client *clp, struct rpc_cred *cred) |
51581f3b TM |
2935 | { |
2936 | long timeout; | |
2937 | int err; | |
2938 | do { | |
2939 | err = _nfs4_proc_setclientid_confirm(clp, cred); | |
2940 | switch (err) { | |
2941 | case 0: | |
2942 | return err; | |
2943 | case -NFS4ERR_RESOURCE: | |
2944 | /* The IBM lawyers misread another document! */ | |
2945 | case -NFS4ERR_DELAY: | |
2946 | err = nfs4_delay(clp->cl_rpcclient, &timeout); | |
2947 | } | |
2948 | } while (err == 0); | |
2949 | return err; | |
2950 | } | |
2951 | ||
fe650407 TM |
2952 | struct nfs4_delegreturndata { |
2953 | struct nfs4_delegreturnargs args; | |
fa178f29 | 2954 | struct nfs4_delegreturnres res; |
fe650407 TM |
2955 | struct nfs_fh fh; |
2956 | nfs4_stateid stateid; | |
26e976a8 | 2957 | unsigned long timestamp; |
fa178f29 | 2958 | struct nfs_fattr fattr; |
fe650407 TM |
2959 | int rpc_status; |
2960 | }; | |
2961 | ||
fe650407 TM |
2962 | static void nfs4_delegreturn_done(struct rpc_task *task, void *calldata) |
2963 | { | |
2964 | struct nfs4_delegreturndata *data = calldata; | |
2965 | data->rpc_status = task->tk_status; | |
26e976a8 | 2966 | if (data->rpc_status == 0) |
fa178f29 | 2967 | renew_lease(data->res.server, data->timestamp); |
fe650407 TM |
2968 | } |
2969 | ||
2970 | static void nfs4_delegreturn_release(void *calldata) | |
2971 | { | |
fe650407 TM |
2972 | kfree(calldata); |
2973 | } | |
2974 | ||
c8d149f3 | 2975 | static const struct rpc_call_ops nfs4_delegreturn_ops = { |
fe650407 TM |
2976 | .rpc_call_done = nfs4_delegreturn_done, |
2977 | .rpc_release = nfs4_delegreturn_release, | |
2978 | }; | |
2979 | ||
e6f81075 | 2980 | static int _nfs4_proc_delegreturn(struct inode *inode, struct rpc_cred *cred, const nfs4_stateid *stateid, int issync) |
fe650407 TM |
2981 | { |
2982 | struct nfs4_delegreturndata *data; | |
fa178f29 | 2983 | struct nfs_server *server = NFS_SERVER(inode); |
fe650407 | 2984 | struct rpc_task *task; |
5138fde0 TM |
2985 | struct rpc_message msg = { |
2986 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DELEGRETURN], | |
2987 | .rpc_cred = cred, | |
2988 | }; | |
c970aa85 TM |
2989 | struct rpc_task_setup task_setup_data = { |
2990 | .rpc_client = server->client, | |
5138fde0 | 2991 | .rpc_message = &msg, |
c970aa85 TM |
2992 | .callback_ops = &nfs4_delegreturn_ops, |
2993 | .flags = RPC_TASK_ASYNC, | |
2994 | }; | |
e6f81075 | 2995 | int status = 0; |
fe650407 TM |
2996 | |
2997 | data = kmalloc(sizeof(*data), GFP_KERNEL); | |
2998 | if (data == NULL) | |
2999 | return -ENOMEM; | |
3000 | data->args.fhandle = &data->fh; | |
3001 | data->args.stateid = &data->stateid; | |
fa178f29 | 3002 | data->args.bitmask = server->attr_bitmask; |
fe650407 TM |
3003 | nfs_copy_fh(&data->fh, NFS_FH(inode)); |
3004 | memcpy(&data->stateid, stateid, sizeof(data->stateid)); | |
fa178f29 TM |
3005 | data->res.fattr = &data->fattr; |
3006 | data->res.server = server; | |
5138fde0 | 3007 | nfs_fattr_init(data->res.fattr); |
26e976a8 | 3008 | data->timestamp = jiffies; |
fe650407 TM |
3009 | data->rpc_status = 0; |
3010 | ||
c970aa85 | 3011 | task_setup_data.callback_data = data; |
5138fde0 TM |
3012 | msg.rpc_argp = &data->args, |
3013 | msg.rpc_resp = &data->res, | |
c970aa85 | 3014 | task = rpc_run_task(&task_setup_data); |
7a1218a2 | 3015 | if (IS_ERR(task)) |
fe650407 | 3016 | return PTR_ERR(task); |
e6f81075 TM |
3017 | if (!issync) |
3018 | goto out; | |
fe650407 | 3019 | status = nfs4_wait_for_completion_rpc_task(task); |
e6f81075 TM |
3020 | if (status != 0) |
3021 | goto out; | |
3022 | status = data->rpc_status; | |
3023 | if (status != 0) | |
3024 | goto out; | |
3025 | nfs_refresh_inode(inode, &data->fattr); | |
3026 | out: | |
e6b3c4db | 3027 | rpc_put_task(task); |
fe650407 | 3028 | return status; |
1da177e4 LT |
3029 | } |
3030 | ||
e6f81075 | 3031 | int nfs4_proc_delegreturn(struct inode *inode, struct rpc_cred *cred, const nfs4_stateid *stateid, int issync) |
1da177e4 LT |
3032 | { |
3033 | struct nfs_server *server = NFS_SERVER(inode); | |
3034 | struct nfs4_exception exception = { }; | |
3035 | int err; | |
3036 | do { | |
e6f81075 | 3037 | err = _nfs4_proc_delegreturn(inode, cred, stateid, issync); |
1da177e4 LT |
3038 | switch (err) { |
3039 | case -NFS4ERR_STALE_STATEID: | |
3040 | case -NFS4ERR_EXPIRED: | |
1da177e4 LT |
3041 | case 0: |
3042 | return 0; | |
3043 | } | |
3044 | err = nfs4_handle_exception(server, err, &exception); | |
3045 | } while (exception.retry); | |
3046 | return err; | |
3047 | } | |
3048 | ||
3049 | #define NFS4_LOCK_MINTIMEOUT (1 * HZ) | |
3050 | #define NFS4_LOCK_MAXTIMEOUT (30 * HZ) | |
3051 | ||
3052 | /* | |
3053 | * sleep, with exponential backoff, and retry the LOCK operation. | |
3054 | */ | |
3055 | static unsigned long | |
3056 | nfs4_set_lock_task_retry(unsigned long timeout) | |
3057 | { | |
150030b7 | 3058 | schedule_timeout_killable(timeout); |
1da177e4 LT |
3059 | timeout <<= 1; |
3060 | if (timeout > NFS4_LOCK_MAXTIMEOUT) | |
3061 | return NFS4_LOCK_MAXTIMEOUT; | |
3062 | return timeout; | |
3063 | } | |
3064 | ||
1da177e4 LT |
3065 | static int _nfs4_proc_getlk(struct nfs4_state *state, int cmd, struct file_lock *request) |
3066 | { | |
3067 | struct inode *inode = state->inode; | |
3068 | struct nfs_server *server = NFS_SERVER(inode); | |
7539bbab | 3069 | struct nfs_client *clp = server->nfs_client; |
911d1aaf | 3070 | struct nfs_lockt_args arg = { |
1da177e4 | 3071 | .fh = NFS_FH(inode), |
911d1aaf | 3072 | .fl = request, |
1da177e4 | 3073 | }; |
911d1aaf TM |
3074 | struct nfs_lockt_res res = { |
3075 | .denied = request, | |
1da177e4 LT |
3076 | }; |
3077 | struct rpc_message msg = { | |
3078 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCKT], | |
3079 | .rpc_argp = &arg, | |
3080 | .rpc_resp = &res, | |
3081 | .rpc_cred = state->owner->so_cred, | |
3082 | }; | |
1da177e4 LT |
3083 | struct nfs4_lock_state *lsp; |
3084 | int status; | |
3085 | ||
3086 | down_read(&clp->cl_sem); | |
911d1aaf | 3087 | arg.lock_owner.clientid = clp->cl_clientid; |
8d0a8a9d TM |
3088 | status = nfs4_set_lock_state(state, request); |
3089 | if (status != 0) | |
3090 | goto out; | |
3091 | lsp = request->fl_u.nfs4_fl.owner; | |
9f958ab8 | 3092 | arg.lock_owner.id = lsp->ls_id.id; |
1da177e4 | 3093 | status = rpc_call_sync(server->client, &msg, 0); |
911d1aaf TM |
3094 | switch (status) { |
3095 | case 0: | |
3096 | request->fl_type = F_UNLCK; | |
3097 | break; | |
3098 | case -NFS4ERR_DENIED: | |
3099 | status = 0; | |
1da177e4 | 3100 | } |
70cc6487 | 3101 | request->fl_ops->fl_release_private(request); |
8d0a8a9d | 3102 | out: |
1da177e4 LT |
3103 | up_read(&clp->cl_sem); |
3104 | return status; | |
3105 | } | |
3106 | ||
3107 | static int nfs4_proc_getlk(struct nfs4_state *state, int cmd, struct file_lock *request) | |
3108 | { | |
3109 | struct nfs4_exception exception = { }; | |
3110 | int err; | |
3111 | ||
3112 | do { | |
3113 | err = nfs4_handle_exception(NFS_SERVER(state->inode), | |
3114 | _nfs4_proc_getlk(state, cmd, request), | |
3115 | &exception); | |
3116 | } while (exception.retry); | |
3117 | return err; | |
3118 | } | |
3119 | ||
3120 | static int do_vfs_lock(struct file *file, struct file_lock *fl) | |
3121 | { | |
3122 | int res = 0; | |
3123 | switch (fl->fl_flags & (FL_POSIX|FL_FLOCK)) { | |
3124 | case FL_POSIX: | |
3125 | res = posix_lock_file_wait(file, fl); | |
3126 | break; | |
3127 | case FL_FLOCK: | |
3128 | res = flock_lock_file_wait(file, fl); | |
3129 | break; | |
3130 | default: | |
3131 | BUG(); | |
3132 | } | |
1da177e4 LT |
3133 | return res; |
3134 | } | |
3135 | ||
faf5f49c | 3136 | struct nfs4_unlockdata { |
911d1aaf TM |
3137 | struct nfs_locku_args arg; |
3138 | struct nfs_locku_res res; | |
faf5f49c TM |
3139 | struct nfs4_lock_state *lsp; |
3140 | struct nfs_open_context *ctx; | |
911d1aaf TM |
3141 | struct file_lock fl; |
3142 | const struct nfs_server *server; | |
26e976a8 | 3143 | unsigned long timestamp; |
faf5f49c TM |
3144 | }; |
3145 | ||
911d1aaf TM |
3146 | static struct nfs4_unlockdata *nfs4_alloc_unlockdata(struct file_lock *fl, |
3147 | struct nfs_open_context *ctx, | |
3148 | struct nfs4_lock_state *lsp, | |
3149 | struct nfs_seqid *seqid) | |
3150 | { | |
3151 | struct nfs4_unlockdata *p; | |
3152 | struct inode *inode = lsp->ls_state->inode; | |
3153 | ||
3154 | p = kmalloc(sizeof(*p), GFP_KERNEL); | |
3155 | if (p == NULL) | |
3156 | return NULL; | |
3157 | p->arg.fh = NFS_FH(inode); | |
3158 | p->arg.fl = &p->fl; | |
3159 | p->arg.seqid = seqid; | |
c1d51931 | 3160 | p->res.seqid = seqid; |
911d1aaf TM |
3161 | p->arg.stateid = &lsp->ls_stateid; |
3162 | p->lsp = lsp; | |
3163 | atomic_inc(&lsp->ls_count); | |
3164 | /* Ensure we don't close file until we're done freeing locks! */ | |
3165 | p->ctx = get_nfs_open_context(ctx); | |
3166 | memcpy(&p->fl, fl, sizeof(p->fl)); | |
3167 | p->server = NFS_SERVER(inode); | |
3168 | return p; | |
3169 | } | |
3170 | ||
06f814a3 | 3171 | static void nfs4_locku_release_calldata(void *data) |
faf5f49c | 3172 | { |
963d8fe5 | 3173 | struct nfs4_unlockdata *calldata = data; |
911d1aaf | 3174 | nfs_free_seqid(calldata->arg.seqid); |
06f814a3 TM |
3175 | nfs4_put_lock_state(calldata->lsp); |
3176 | put_nfs_open_context(calldata->ctx); | |
3177 | kfree(calldata); | |
faf5f49c TM |
3178 | } |
3179 | ||
963d8fe5 | 3180 | static void nfs4_locku_done(struct rpc_task *task, void *data) |
faf5f49c | 3181 | { |
963d8fe5 | 3182 | struct nfs4_unlockdata *calldata = data; |
faf5f49c | 3183 | |
06f814a3 TM |
3184 | if (RPC_ASSASSINATED(task)) |
3185 | return; | |
faf5f49c TM |
3186 | switch (task->tk_status) { |
3187 | case 0: | |
3188 | memcpy(calldata->lsp->ls_stateid.data, | |
911d1aaf | 3189 | calldata->res.stateid.data, |
faf5f49c | 3190 | sizeof(calldata->lsp->ls_stateid.data)); |
26e976a8 | 3191 | renew_lease(calldata->server, calldata->timestamp); |
faf5f49c TM |
3192 | break; |
3193 | case -NFS4ERR_STALE_STATEID: | |
3194 | case -NFS4ERR_EXPIRED: | |
faf5f49c TM |
3195 | break; |
3196 | default: | |
a6a352e9 | 3197 | if (nfs4_async_handle_error(task, calldata->server) == -EAGAIN) |
faf5f49c | 3198 | rpc_restart_call(task); |
faf5f49c | 3199 | } |
faf5f49c TM |
3200 | } |
3201 | ||
4ce70ada | 3202 | static void nfs4_locku_prepare(struct rpc_task *task, void *data) |
faf5f49c | 3203 | { |
4ce70ada | 3204 | struct nfs4_unlockdata *calldata = data; |
faf5f49c | 3205 | |
911d1aaf | 3206 | if (nfs_wait_on_sequence(calldata->arg.seqid, task) != 0) |
faf5f49c TM |
3207 | return; |
3208 | if ((calldata->lsp->ls_flags & NFS_LOCK_INITIALIZED) == 0) { | |
963d8fe5 TM |
3209 | /* Note: exit _without_ running nfs4_locku_done */ |
3210 | task->tk_action = NULL; | |
faf5f49c TM |
3211 | return; |
3212 | } | |
26e976a8 | 3213 | calldata->timestamp = jiffies; |
5138fde0 | 3214 | rpc_call_start(task); |
faf5f49c TM |
3215 | } |
3216 | ||
963d8fe5 | 3217 | static const struct rpc_call_ops nfs4_locku_ops = { |
4ce70ada | 3218 | .rpc_call_prepare = nfs4_locku_prepare, |
963d8fe5 | 3219 | .rpc_call_done = nfs4_locku_done, |
06f814a3 | 3220 | .rpc_release = nfs4_locku_release_calldata, |
963d8fe5 TM |
3221 | }; |
3222 | ||
a5d16a4d TM |
3223 | static struct rpc_task *nfs4_do_unlck(struct file_lock *fl, |
3224 | struct nfs_open_context *ctx, | |
3225 | struct nfs4_lock_state *lsp, | |
3226 | struct nfs_seqid *seqid) | |
3227 | { | |
3228 | struct nfs4_unlockdata *data; | |
5138fde0 TM |
3229 | struct rpc_message msg = { |
3230 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCKU], | |
3231 | .rpc_cred = ctx->cred, | |
3232 | }; | |
c970aa85 TM |
3233 | struct rpc_task_setup task_setup_data = { |
3234 | .rpc_client = NFS_CLIENT(lsp->ls_state->inode), | |
5138fde0 | 3235 | .rpc_message = &msg, |
c970aa85 | 3236 | .callback_ops = &nfs4_locku_ops, |
101070ca | 3237 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
3238 | .flags = RPC_TASK_ASYNC, |
3239 | }; | |
a5d16a4d | 3240 | |
137d6aca FF |
3241 | /* Ensure this is an unlock - when canceling a lock, the |
3242 | * canceled lock is passed in, and it won't be an unlock. | |
3243 | */ | |
3244 | fl->fl_type = F_UNLCK; | |
3245 | ||
a5d16a4d TM |
3246 | data = nfs4_alloc_unlockdata(fl, ctx, lsp, seqid); |
3247 | if (data == NULL) { | |
3248 | nfs_free_seqid(seqid); | |
3249 | return ERR_PTR(-ENOMEM); | |
3250 | } | |
3251 | ||
5138fde0 TM |
3252 | msg.rpc_argp = &data->arg, |
3253 | msg.rpc_resp = &data->res, | |
c970aa85 TM |
3254 | task_setup_data.callback_data = data; |
3255 | return rpc_run_task(&task_setup_data); | |
a5d16a4d TM |
3256 | } |
3257 | ||
faf5f49c TM |
3258 | static int nfs4_proc_unlck(struct nfs4_state *state, int cmd, struct file_lock *request) |
3259 | { | |
911d1aaf | 3260 | struct nfs_seqid *seqid; |
1da177e4 | 3261 | struct nfs4_lock_state *lsp; |
06f814a3 TM |
3262 | struct rpc_task *task; |
3263 | int status = 0; | |
536ff0f8 | 3264 | unsigned char fl_flags = request->fl_flags; |
faf5f49c | 3265 | |
8d0a8a9d | 3266 | status = nfs4_set_lock_state(state, request); |
9b073574 TM |
3267 | /* Unlock _before_ we do the RPC call */ |
3268 | request->fl_flags |= FL_EXISTS; | |
3269 | if (do_vfs_lock(request->fl_file, request) == -ENOENT) | |
3270 | goto out; | |
8d0a8a9d | 3271 | if (status != 0) |
9b073574 TM |
3272 | goto out; |
3273 | /* Is this a delegated lock? */ | |
3274 | if (test_bit(NFS_DELEGATED_STATE, &state->flags)) | |
3275 | goto out; | |
8d0a8a9d | 3276 | lsp = request->fl_u.nfs4_fl.owner; |
911d1aaf | 3277 | seqid = nfs_alloc_seqid(&lsp->ls_seqid); |
9b073574 | 3278 | status = -ENOMEM; |
911d1aaf | 3279 | if (seqid == NULL) |
9b073574 | 3280 | goto out; |
cd3758e3 | 3281 | task = nfs4_do_unlck(request, nfs_file_open_context(request->fl_file), lsp, seqid); |
a5d16a4d TM |
3282 | status = PTR_ERR(task); |
3283 | if (IS_ERR(task)) | |
9b073574 | 3284 | goto out; |
a5d16a4d | 3285 | status = nfs4_wait_for_completion_rpc_task(task); |
e6b3c4db | 3286 | rpc_put_task(task); |
9b073574 | 3287 | out: |
536ff0f8 | 3288 | request->fl_flags = fl_flags; |
1da177e4 LT |
3289 | return status; |
3290 | } | |
3291 | ||
a5d16a4d TM |
3292 | struct nfs4_lockdata { |
3293 | struct nfs_lock_args arg; | |
3294 | struct nfs_lock_res res; | |
3295 | struct nfs4_lock_state *lsp; | |
3296 | struct nfs_open_context *ctx; | |
3297 | struct file_lock fl; | |
26e976a8 | 3298 | unsigned long timestamp; |
a5d16a4d TM |
3299 | int rpc_status; |
3300 | int cancelled; | |
3301 | }; | |
3302 | ||
3303 | static struct nfs4_lockdata *nfs4_alloc_lockdata(struct file_lock *fl, | |
3304 | struct nfs_open_context *ctx, struct nfs4_lock_state *lsp) | |
1da177e4 | 3305 | { |
a5d16a4d TM |
3306 | struct nfs4_lockdata *p; |
3307 | struct inode *inode = lsp->ls_state->inode; | |
1da177e4 | 3308 | struct nfs_server *server = NFS_SERVER(inode); |
a5d16a4d TM |
3309 | |
3310 | p = kzalloc(sizeof(*p), GFP_KERNEL); | |
3311 | if (p == NULL) | |
3312 | return NULL; | |
3313 | ||
3314 | p->arg.fh = NFS_FH(inode); | |
3315 | p->arg.fl = &p->fl; | |
2f74c0a0 TM |
3316 | p->arg.open_seqid = nfs_alloc_seqid(&lsp->ls_state->owner->so_seqid); |
3317 | if (p->arg.open_seqid == NULL) | |
3318 | goto out_free; | |
a5d16a4d TM |
3319 | p->arg.lock_seqid = nfs_alloc_seqid(&lsp->ls_seqid); |
3320 | if (p->arg.lock_seqid == NULL) | |
2f74c0a0 | 3321 | goto out_free_seqid; |
a5d16a4d | 3322 | p->arg.lock_stateid = &lsp->ls_stateid; |
7539bbab | 3323 | p->arg.lock_owner.clientid = server->nfs_client->cl_clientid; |
9f958ab8 | 3324 | p->arg.lock_owner.id = lsp->ls_id.id; |
c1d51931 | 3325 | p->res.lock_seqid = p->arg.lock_seqid; |
a5d16a4d TM |
3326 | p->lsp = lsp; |
3327 | atomic_inc(&lsp->ls_count); | |
3328 | p->ctx = get_nfs_open_context(ctx); | |
3329 | memcpy(&p->fl, fl, sizeof(p->fl)); | |
3330 | return p; | |
2f74c0a0 TM |
3331 | out_free_seqid: |
3332 | nfs_free_seqid(p->arg.open_seqid); | |
a5d16a4d TM |
3333 | out_free: |
3334 | kfree(p); | |
3335 | return NULL; | |
3336 | } | |
3337 | ||
3338 | static void nfs4_lock_prepare(struct rpc_task *task, void *calldata) | |
3339 | { | |
3340 | struct nfs4_lockdata *data = calldata; | |
3341 | struct nfs4_state *state = data->lsp->ls_state; | |
06735b34 | 3342 | |
3110ff80 | 3343 | dprintk("%s: begin!\n", __func__); |
2f74c0a0 TM |
3344 | if (nfs_wait_on_sequence(data->arg.lock_seqid, task) != 0) |
3345 | return; | |
a5d16a4d TM |
3346 | /* Do we need to do an open_to_lock_owner? */ |
3347 | if (!(data->arg.lock_seqid->sequence->flags & NFS_SEQID_CONFIRMED)) { | |
e6e21970 TM |
3348 | if (nfs_wait_on_sequence(data->arg.open_seqid, task) != 0) |
3349 | return; | |
a5d16a4d TM |
3350 | data->arg.open_stateid = &state->stateid; |
3351 | data->arg.new_lock_owner = 1; | |
c1d51931 | 3352 | data->res.open_seqid = data->arg.open_seqid; |
2f74c0a0 TM |
3353 | } else |
3354 | data->arg.new_lock_owner = 0; | |
26e976a8 | 3355 | data->timestamp = jiffies; |
5138fde0 | 3356 | rpc_call_start(task); |
3110ff80 | 3357 | dprintk("%s: done!, ret = %d\n", __func__, data->rpc_status); |
a5d16a4d TM |
3358 | } |
3359 | ||
3360 | static void nfs4_lock_done(struct rpc_task *task, void *calldata) | |
3361 | { | |
3362 | struct nfs4_lockdata *data = calldata; | |
3363 | ||
3110ff80 | 3364 | dprintk("%s: begin!\n", __func__); |
a5d16a4d TM |
3365 | |
3366 | data->rpc_status = task->tk_status; | |
3367 | if (RPC_ASSASSINATED(task)) | |
3368 | goto out; | |
3369 | if (data->arg.new_lock_owner != 0) { | |
a5d16a4d TM |
3370 | if (data->rpc_status == 0) |
3371 | nfs_confirm_seqid(&data->lsp->ls_seqid, 0); | |
3372 | else | |
3373 | goto out; | |
3374 | } | |
3375 | if (data->rpc_status == 0) { | |
3376 | memcpy(data->lsp->ls_stateid.data, data->res.stateid.data, | |
3377 | sizeof(data->lsp->ls_stateid.data)); | |
3378 | data->lsp->ls_flags |= NFS_LOCK_INITIALIZED; | |
88be9f99 | 3379 | renew_lease(NFS_SERVER(data->ctx->path.dentry->d_inode), data->timestamp); |
a5d16a4d | 3380 | } |
a5d16a4d | 3381 | out: |
3110ff80 | 3382 | dprintk("%s: done, ret = %d!\n", __func__, data->rpc_status); |
a5d16a4d TM |
3383 | } |
3384 | ||
3385 | static void nfs4_lock_release(void *calldata) | |
3386 | { | |
3387 | struct nfs4_lockdata *data = calldata; | |
3388 | ||
3110ff80 | 3389 | dprintk("%s: begin!\n", __func__); |
2f74c0a0 | 3390 | nfs_free_seqid(data->arg.open_seqid); |
a5d16a4d TM |
3391 | if (data->cancelled != 0) { |
3392 | struct rpc_task *task; | |
3393 | task = nfs4_do_unlck(&data->fl, data->ctx, data->lsp, | |
3394 | data->arg.lock_seqid); | |
3395 | if (!IS_ERR(task)) | |
e6b3c4db | 3396 | rpc_put_task(task); |
3110ff80 | 3397 | dprintk("%s: cancelling lock!\n", __func__); |
a5d16a4d TM |
3398 | } else |
3399 | nfs_free_seqid(data->arg.lock_seqid); | |
3400 | nfs4_put_lock_state(data->lsp); | |
3401 | put_nfs_open_context(data->ctx); | |
3402 | kfree(data); | |
3110ff80 | 3403 | dprintk("%s: done!\n", __func__); |
a5d16a4d TM |
3404 | } |
3405 | ||
3406 | static const struct rpc_call_ops nfs4_lock_ops = { | |
3407 | .rpc_call_prepare = nfs4_lock_prepare, | |
3408 | .rpc_call_done = nfs4_lock_done, | |
3409 | .rpc_release = nfs4_lock_release, | |
3410 | }; | |
3411 | ||
3412 | static int _nfs4_do_setlk(struct nfs4_state *state, int cmd, struct file_lock *fl, int reclaim) | |
3413 | { | |
3414 | struct nfs4_lockdata *data; | |
3415 | struct rpc_task *task; | |
5138fde0 TM |
3416 | struct rpc_message msg = { |
3417 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCK], | |
3418 | .rpc_cred = state->owner->so_cred, | |
3419 | }; | |
c970aa85 TM |
3420 | struct rpc_task_setup task_setup_data = { |
3421 | .rpc_client = NFS_CLIENT(state->inode), | |
5138fde0 | 3422 | .rpc_message = &msg, |
c970aa85 | 3423 | .callback_ops = &nfs4_lock_ops, |
101070ca | 3424 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
3425 | .flags = RPC_TASK_ASYNC, |
3426 | }; | |
a5d16a4d TM |
3427 | int ret; |
3428 | ||
3110ff80 | 3429 | dprintk("%s: begin!\n", __func__); |
cd3758e3 | 3430 | data = nfs4_alloc_lockdata(fl, nfs_file_open_context(fl->fl_file), |
a5d16a4d TM |
3431 | fl->fl_u.nfs4_fl.owner); |
3432 | if (data == NULL) | |
3433 | return -ENOMEM; | |
3434 | if (IS_SETLKW(cmd)) | |
3435 | data->arg.block = 1; | |
3436 | if (reclaim != 0) | |
3437 | data->arg.reclaim = 1; | |
5138fde0 TM |
3438 | msg.rpc_argp = &data->arg, |
3439 | msg.rpc_resp = &data->res, | |
c970aa85 TM |
3440 | task_setup_data.callback_data = data; |
3441 | task = rpc_run_task(&task_setup_data); | |
7a1218a2 | 3442 | if (IS_ERR(task)) |
a5d16a4d | 3443 | return PTR_ERR(task); |
a5d16a4d TM |
3444 | ret = nfs4_wait_for_completion_rpc_task(task); |
3445 | if (ret == 0) { | |
3446 | ret = data->rpc_status; | |
3447 | if (ret == -NFS4ERR_DENIED) | |
3448 | ret = -EAGAIN; | |
3449 | } else | |
3450 | data->cancelled = 1; | |
e6b3c4db | 3451 | rpc_put_task(task); |
3110ff80 | 3452 | dprintk("%s: done, ret = %d!\n", __func__, ret); |
a5d16a4d | 3453 | return ret; |
1da177e4 LT |
3454 | } |
3455 | ||
3456 | static int nfs4_lock_reclaim(struct nfs4_state *state, struct file_lock *request) | |
3457 | { | |
202b50dc TM |
3458 | struct nfs_server *server = NFS_SERVER(state->inode); |
3459 | struct nfs4_exception exception = { }; | |
3460 | int err; | |
3461 | ||
3462 | do { | |
42a2d13e TM |
3463 | /* Cache the lock if possible... */ |
3464 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) != 0) | |
3465 | return 0; | |
202b50dc TM |
3466 | err = _nfs4_do_setlk(state, F_SETLK, request, 1); |
3467 | if (err != -NFS4ERR_DELAY) | |
3468 | break; | |
3469 | nfs4_handle_exception(server, err, &exception); | |
3470 | } while (exception.retry); | |
3471 | return err; | |
1da177e4 LT |
3472 | } |
3473 | ||
3474 | static int nfs4_lock_expired(struct nfs4_state *state, struct file_lock *request) | |
3475 | { | |
202b50dc TM |
3476 | struct nfs_server *server = NFS_SERVER(state->inode); |
3477 | struct nfs4_exception exception = { }; | |
3478 | int err; | |
3479 | ||
6bfc93ef TM |
3480 | err = nfs4_set_lock_state(state, request); |
3481 | if (err != 0) | |
3482 | return err; | |
202b50dc | 3483 | do { |
42a2d13e TM |
3484 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) != 0) |
3485 | return 0; | |
202b50dc TM |
3486 | err = _nfs4_do_setlk(state, F_SETLK, request, 0); |
3487 | if (err != -NFS4ERR_DELAY) | |
3488 | break; | |
3489 | nfs4_handle_exception(server, err, &exception); | |
3490 | } while (exception.retry); | |
3491 | return err; | |
1da177e4 LT |
3492 | } |
3493 | ||
3494 | static int _nfs4_proc_setlk(struct nfs4_state *state, int cmd, struct file_lock *request) | |
3495 | { | |
adfa6f98 | 3496 | struct nfs_client *clp = state->owner->so_client; |
01c3b861 | 3497 | unsigned char fl_flags = request->fl_flags; |
1da177e4 LT |
3498 | int status; |
3499 | ||
6bfc93ef | 3500 | /* Is this a delegated open? */ |
6bfc93ef TM |
3501 | status = nfs4_set_lock_state(state, request); |
3502 | if (status != 0) | |
3503 | goto out; | |
01c3b861 TM |
3504 | request->fl_flags |= FL_ACCESS; |
3505 | status = do_vfs_lock(request->fl_file, request); | |
3506 | if (status < 0) | |
3507 | goto out; | |
3508 | down_read(&clp->cl_sem); | |
3509 | if (test_bit(NFS_DELEGATED_STATE, &state->flags)) { | |
3510 | struct nfs_inode *nfsi = NFS_I(state->inode); | |
3511 | /* Yes: cache locks! */ | |
3512 | down_read(&nfsi->rwsem); | |
3513 | /* ...but avoid races with delegation recall... */ | |
3514 | if (test_bit(NFS_DELEGATED_STATE, &state->flags)) { | |
3515 | request->fl_flags = fl_flags & ~FL_SLEEP; | |
3516 | status = do_vfs_lock(request->fl_file, request); | |
3517 | up_read(&nfsi->rwsem); | |
3518 | goto out_unlock; | |
3519 | } | |
3520 | up_read(&nfsi->rwsem); | |
3521 | } | |
6bfc93ef TM |
3522 | status = _nfs4_do_setlk(state, cmd, request, 0); |
3523 | if (status != 0) | |
01c3b861 | 3524 | goto out_unlock; |
6bfc93ef | 3525 | /* Note: we always want to sleep here! */ |
01c3b861 | 3526 | request->fl_flags = fl_flags | FL_SLEEP; |
6bfc93ef | 3527 | if (do_vfs_lock(request->fl_file, request) < 0) |
3110ff80 | 3528 | printk(KERN_WARNING "%s: VFS is out of sync with lock manager!\n", __func__); |
01c3b861 | 3529 | out_unlock: |
1da177e4 | 3530 | up_read(&clp->cl_sem); |
01c3b861 TM |
3531 | out: |
3532 | request->fl_flags = fl_flags; | |
1da177e4 LT |
3533 | return status; |
3534 | } | |
3535 | ||
3536 | static int nfs4_proc_setlk(struct nfs4_state *state, int cmd, struct file_lock *request) | |
3537 | { | |
3538 | struct nfs4_exception exception = { }; | |
3539 | int err; | |
3540 | ||
3541 | do { | |
3542 | err = nfs4_handle_exception(NFS_SERVER(state->inode), | |
3543 | _nfs4_proc_setlk(state, cmd, request), | |
3544 | &exception); | |
3545 | } while (exception.retry); | |
3546 | return err; | |
3547 | } | |
3548 | ||
3549 | static int | |
3550 | nfs4_proc_lock(struct file *filp, int cmd, struct file_lock *request) | |
3551 | { | |
3552 | struct nfs_open_context *ctx; | |
3553 | struct nfs4_state *state; | |
3554 | unsigned long timeout = NFS4_LOCK_MINTIMEOUT; | |
3555 | int status; | |
3556 | ||
3557 | /* verify open state */ | |
cd3758e3 | 3558 | ctx = nfs_file_open_context(filp); |
1da177e4 LT |
3559 | state = ctx->state; |
3560 | ||
3561 | if (request->fl_start < 0 || request->fl_end < 0) | |
3562 | return -EINVAL; | |
3563 | ||
3564 | if (IS_GETLK(cmd)) | |
3565 | return nfs4_proc_getlk(state, F_GETLK, request); | |
3566 | ||
3567 | if (!(IS_SETLK(cmd) || IS_SETLKW(cmd))) | |
3568 | return -EINVAL; | |
3569 | ||
3570 | if (request->fl_type == F_UNLCK) | |
3571 | return nfs4_proc_unlck(state, cmd, request); | |
3572 | ||
3573 | do { | |
3574 | status = nfs4_proc_setlk(state, cmd, request); | |
3575 | if ((status != -EAGAIN) || IS_SETLK(cmd)) | |
3576 | break; | |
3577 | timeout = nfs4_set_lock_task_retry(timeout); | |
3578 | status = -ERESTARTSYS; | |
3579 | if (signalled()) | |
3580 | break; | |
3581 | } while(status < 0); | |
1da177e4 LT |
3582 | return status; |
3583 | } | |
3584 | ||
888e694c TM |
3585 | int nfs4_lock_delegation_recall(struct nfs4_state *state, struct file_lock *fl) |
3586 | { | |
3587 | struct nfs_server *server = NFS_SERVER(state->inode); | |
3588 | struct nfs4_exception exception = { }; | |
3589 | int err; | |
3590 | ||
3591 | err = nfs4_set_lock_state(state, fl); | |
3592 | if (err != 0) | |
3593 | goto out; | |
3594 | do { | |
3595 | err = _nfs4_do_setlk(state, F_SETLK, fl, 0); | |
3596 | if (err != -NFS4ERR_DELAY) | |
3597 | break; | |
3598 | err = nfs4_handle_exception(server, err, &exception); | |
3599 | } while (exception.retry); | |
3600 | out: | |
3601 | return err; | |
3602 | } | |
6b3b5496 | 3603 | |
aa1870af BF |
3604 | #define XATTR_NAME_NFSV4_ACL "system.nfs4_acl" |
3605 | ||
6b3b5496 BF |
3606 | int nfs4_setxattr(struct dentry *dentry, const char *key, const void *buf, |
3607 | size_t buflen, int flags) | |
3608 | { | |
4b580ee3 BF |
3609 | struct inode *inode = dentry->d_inode; |
3610 | ||
3611 | if (strcmp(key, XATTR_NAME_NFSV4_ACL) != 0) | |
3612 | return -EOPNOTSUPP; | |
3613 | ||
4b580ee3 | 3614 | return nfs4_proc_set_acl(inode, buf, buflen); |
6b3b5496 BF |
3615 | } |
3616 | ||
3617 | /* The getxattr man page suggests returning -ENODATA for unknown attributes, | |
3618 | * and that's what we'll do for e.g. user attributes that haven't been set. | |
3619 | * But we'll follow ext2/ext3's lead by returning -EOPNOTSUPP for unsupported | |
3620 | * attributes in kernel-managed attribute namespaces. */ | |
3621 | ssize_t nfs4_getxattr(struct dentry *dentry, const char *key, void *buf, | |
3622 | size_t buflen) | |
3623 | { | |
aa1870af BF |
3624 | struct inode *inode = dentry->d_inode; |
3625 | ||
3626 | if (strcmp(key, XATTR_NAME_NFSV4_ACL) != 0) | |
3627 | return -EOPNOTSUPP; | |
3628 | ||
3629 | return nfs4_proc_get_acl(inode, buf, buflen); | |
6b3b5496 BF |
3630 | } |
3631 | ||
3632 | ssize_t nfs4_listxattr(struct dentry *dentry, char *buf, size_t buflen) | |
3633 | { | |
aa1870af | 3634 | size_t len = strlen(XATTR_NAME_NFSV4_ACL) + 1; |
6b3b5496 | 3635 | |
096455a2 BF |
3636 | if (!nfs4_server_supports_acls(NFS_SERVER(dentry->d_inode))) |
3637 | return 0; | |
6b3b5496 BF |
3638 | if (buf && buflen < len) |
3639 | return -ERANGE; | |
3640 | if (buf) | |
aa1870af BF |
3641 | memcpy(buf, XATTR_NAME_NFSV4_ACL, len); |
3642 | return len; | |
6b3b5496 BF |
3643 | } |
3644 | ||
56659e99 | 3645 | int nfs4_proc_fs_locations(struct inode *dir, const struct qstr *name, |
7aaa0b3b | 3646 | struct nfs4_fs_locations *fs_locations, struct page *page) |
683b57b4 TM |
3647 | { |
3648 | struct nfs_server *server = NFS_SERVER(dir); | |
3649 | u32 bitmask[2] = { | |
361e624f MN |
3650 | [0] = FATTR4_WORD0_FSID | FATTR4_WORD0_FS_LOCATIONS, |
3651 | [1] = FATTR4_WORD1_MOUNTED_ON_FILEID, | |
683b57b4 TM |
3652 | }; |
3653 | struct nfs4_fs_locations_arg args = { | |
3654 | .dir_fh = NFS_FH(dir), | |
c228fd3a | 3655 | .name = name, |
683b57b4 TM |
3656 | .page = page, |
3657 | .bitmask = bitmask, | |
3658 | }; | |
3659 | struct rpc_message msg = { | |
3660 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FS_LOCATIONS], | |
3661 | .rpc_argp = &args, | |
7aaa0b3b | 3662 | .rpc_resp = fs_locations, |
683b57b4 TM |
3663 | }; |
3664 | int status; | |
3665 | ||
3110ff80 | 3666 | dprintk("%s: start\n", __func__); |
c228fd3a | 3667 | nfs_fattr_init(&fs_locations->fattr); |
683b57b4 | 3668 | fs_locations->server = server; |
830b8e33 | 3669 | fs_locations->nlocations = 0; |
683b57b4 | 3670 | status = rpc_call_sync(server->client, &msg, 0); |
3110ff80 | 3671 | dprintk("%s: returned status = %d\n", __func__, status); |
683b57b4 TM |
3672 | return status; |
3673 | } | |
3674 | ||
1da177e4 LT |
3675 | struct nfs4_state_recovery_ops nfs4_reboot_recovery_ops = { |
3676 | .recover_open = nfs4_open_reclaim, | |
3677 | .recover_lock = nfs4_lock_reclaim, | |
3678 | }; | |
3679 | ||
3680 | struct nfs4_state_recovery_ops nfs4_network_partition_recovery_ops = { | |
3681 | .recover_open = nfs4_open_expired, | |
3682 | .recover_lock = nfs4_lock_expired, | |
3683 | }; | |
3684 | ||
92e1d5be | 3685 | static const struct inode_operations nfs4_file_inode_operations = { |
6b3b5496 BF |
3686 | .permission = nfs_permission, |
3687 | .getattr = nfs_getattr, | |
3688 | .setattr = nfs_setattr, | |
3689 | .getxattr = nfs4_getxattr, | |
3690 | .setxattr = nfs4_setxattr, | |
3691 | .listxattr = nfs4_listxattr, | |
3692 | }; | |
3693 | ||
509de811 | 3694 | const struct nfs_rpc_ops nfs_v4_clientops = { |
1da177e4 LT |
3695 | .version = 4, /* protocol version */ |
3696 | .dentry_ops = &nfs4_dentry_operations, | |
3697 | .dir_inode_ops = &nfs4_dir_inode_operations, | |
6b3b5496 | 3698 | .file_inode_ops = &nfs4_file_inode_operations, |
1da177e4 LT |
3699 | .getroot = nfs4_proc_get_root, |
3700 | .getattr = nfs4_proc_getattr, | |
3701 | .setattr = nfs4_proc_setattr, | |
2b3de441 | 3702 | .lookupfh = nfs4_proc_lookupfh, |
1da177e4 LT |
3703 | .lookup = nfs4_proc_lookup, |
3704 | .access = nfs4_proc_access, | |
3705 | .readlink = nfs4_proc_readlink, | |
1da177e4 LT |
3706 | .create = nfs4_proc_create, |
3707 | .remove = nfs4_proc_remove, | |
3708 | .unlink_setup = nfs4_proc_unlink_setup, | |
3709 | .unlink_done = nfs4_proc_unlink_done, | |
3710 | .rename = nfs4_proc_rename, | |
3711 | .link = nfs4_proc_link, | |
3712 | .symlink = nfs4_proc_symlink, | |
3713 | .mkdir = nfs4_proc_mkdir, | |
3714 | .rmdir = nfs4_proc_remove, | |
3715 | .readdir = nfs4_proc_readdir, | |
3716 | .mknod = nfs4_proc_mknod, | |
3717 | .statfs = nfs4_proc_statfs, | |
3718 | .fsinfo = nfs4_proc_fsinfo, | |
3719 | .pathconf = nfs4_proc_pathconf, | |
e9326dca | 3720 | .set_capabilities = nfs4_server_capabilities, |
1da177e4 LT |
3721 | .decode_dirent = nfs4_decode_dirent, |
3722 | .read_setup = nfs4_proc_read_setup, | |
ec06c096 | 3723 | .read_done = nfs4_read_done, |
1da177e4 | 3724 | .write_setup = nfs4_proc_write_setup, |
788e7a89 | 3725 | .write_done = nfs4_write_done, |
1da177e4 | 3726 | .commit_setup = nfs4_proc_commit_setup, |
788e7a89 | 3727 | .commit_done = nfs4_commit_done, |
02a913a7 TM |
3728 | .file_open = nfs_open, |
3729 | .file_release = nfs_release, | |
1da177e4 | 3730 | .lock = nfs4_proc_lock, |
e50a1c2e | 3731 | .clear_acl_cache = nfs4_zap_acl_attr, |
1da177e4 LT |
3732 | }; |
3733 | ||
3734 | /* | |
3735 | * Local variables: | |
3736 | * c-basic-offset: 8 | |
3737 | * End: | |
3738 | */ |