Commit | Line | Data |
---|---|---|
1da177e4 | 1 | /* |
1da177e4 LT |
2 | * Server-side XDR for NFSv4 |
3 | * | |
4 | * Copyright (c) 2002 The Regents of the University of Michigan. | |
5 | * All rights reserved. | |
6 | * | |
7 | * Kendrick Smith <kmsmith@umich.edu> | |
8 | * Andy Adamson <andros@umich.edu> | |
9 | * | |
10 | * Redistribution and use in source and binary forms, with or without | |
11 | * modification, are permitted provided that the following conditions | |
12 | * are met: | |
13 | * | |
14 | * 1. Redistributions of source code must retain the above copyright | |
15 | * notice, this list of conditions and the following disclaimer. | |
16 | * 2. Redistributions in binary form must reproduce the above copyright | |
17 | * notice, this list of conditions and the following disclaimer in the | |
18 | * documentation and/or other materials provided with the distribution. | |
19 | * 3. Neither the name of the University nor the names of its | |
20 | * contributors may be used to endorse or promote products derived | |
21 | * from this software without specific prior written permission. | |
22 | * | |
23 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED | |
24 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF | |
25 | * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE | |
26 | * DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | |
27 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR | |
28 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF | |
29 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR | |
30 | * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF | |
31 | * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING | |
32 | * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS | |
33 | * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
1da177e4 LT |
34 | */ |
35 | ||
96bcad50 | 36 | #include <linux/file.h> |
5a0e3ad6 | 37 | #include <linux/slab.h> |
1da177e4 | 38 | #include <linux/namei.h> |
341eb184 | 39 | #include <linux/statfs.h> |
0733d213 | 40 | #include <linux/utsname.h> |
17456804 | 41 | #include <linux/pagemap.h> |
4796f457 | 42 | #include <linux/sunrpc/svcauth_gss.h> |
9a74af21 | 43 | |
2ca72e17 BF |
44 | #include "idmap.h" |
45 | #include "acl.h" | |
9a74af21 | 46 | #include "xdr4.h" |
0a3adade | 47 | #include "vfs.h" |
17456804 | 48 | #include "state.h" |
1091006c | 49 | #include "cache.h" |
3d733711 | 50 | #include "netns.h" |
9cf514cc | 51 | #include "pnfs.h" |
2ca72e17 | 52 | |
18032ca0 DQ |
53 | #ifdef CONFIG_NFSD_V4_SECURITY_LABEL |
54 | #include <linux/security.h> | |
55 | #endif | |
56 | ||
57 | ||
1da177e4 LT |
58 | #define NFSDDBG_FACILITY NFSDDBG_XDR |
59 | ||
42ca0993 BF |
60 | /* |
61 | * As per referral draft, the fsid for a referral MUST be different from the fsid of the containing | |
62 | * directory in order to indicate to the client that a filesystem boundary is present | |
63 | * We use a fixed fsid for a referral | |
64 | */ | |
65 | #define NFS4_REFERRAL_FSID_MAJOR 0x8000000ULL | |
66 | #define NFS4_REFERRAL_FSID_MINOR 0x8000000ULL | |
67 | ||
b37ad28b | 68 | static __be32 |
a36b1725 | 69 | check_filename(char *str, int len) |
1da177e4 LT |
70 | { |
71 | int i; | |
72 | ||
73 | if (len == 0) | |
74 | return nfserr_inval; | |
75 | if (isdotent(str, len)) | |
a36b1725 | 76 | return nfserr_badname; |
1da177e4 LT |
77 | for (i = 0; i < len; i++) |
78 | if (str[i] == '/') | |
a36b1725 | 79 | return nfserr_badname; |
1da177e4 LT |
80 | return 0; |
81 | } | |
82 | ||
1da177e4 | 83 | #define DECODE_HEAD \ |
2ebbc012 | 84 | __be32 *p; \ |
b37ad28b | 85 | __be32 status |
1da177e4 LT |
86 | #define DECODE_TAIL \ |
87 | status = 0; \ | |
88 | out: \ | |
89 | return status; \ | |
90 | xdr_error: \ | |
817cb9d4 CL |
91 | dprintk("NFSD: xdr error (%s:%d)\n", \ |
92 | __FILE__, __LINE__); \ | |
1da177e4 LT |
93 | status = nfserr_bad_xdr; \ |
94 | goto out | |
95 | ||
1da177e4 LT |
96 | #define READMEM(x,nbytes) do { \ |
97 | x = (char *)p; \ | |
98 | p += XDR_QUADLEN(nbytes); \ | |
99 | } while (0) | |
100 | #define SAVEMEM(x,nbytes) do { \ | |
101 | if (!(x = (p==argp->tmp || p == argp->tmpp) ? \ | |
102 | savemem(argp, p, nbytes) : \ | |
103 | (char *)p)) { \ | |
817cb9d4 CL |
104 | dprintk("NFSD: xdr error (%s:%d)\n", \ |
105 | __FILE__, __LINE__); \ | |
1da177e4 LT |
106 | goto xdr_error; \ |
107 | } \ | |
108 | p += XDR_QUADLEN(nbytes); \ | |
109 | } while (0) | |
110 | #define COPYMEM(x,nbytes) do { \ | |
111 | memcpy((x), p, nbytes); \ | |
112 | p += XDR_QUADLEN(nbytes); \ | |
113 | } while (0) | |
114 | ||
115 | /* READ_BUF, read_buf(): nbytes must be <= PAGE_SIZE */ | |
116 | #define READ_BUF(nbytes) do { \ | |
117 | if (nbytes <= (u32)((char *)argp->end - (char *)argp->p)) { \ | |
118 | p = argp->p; \ | |
119 | argp->p += XDR_QUADLEN(nbytes); \ | |
120 | } else if (!(p = read_buf(argp, nbytes))) { \ | |
817cb9d4 CL |
121 | dprintk("NFSD: xdr error (%s:%d)\n", \ |
122 | __FILE__, __LINE__); \ | |
1da177e4 LT |
123 | goto xdr_error; \ |
124 | } \ | |
125 | } while (0) | |
126 | ||
590b7431 BF |
127 | static void next_decode_page(struct nfsd4_compoundargs *argp) |
128 | { | |
590b7431 | 129 | argp->p = page_address(argp->pagelist[0]); |
365da4ad | 130 | argp->pagelist++; |
590b7431 BF |
131 | if (argp->pagelen < PAGE_SIZE) { |
132 | argp->end = argp->p + (argp->pagelen>>2); | |
133 | argp->pagelen = 0; | |
134 | } else { | |
135 | argp->end = argp->p + (PAGE_SIZE>>2); | |
136 | argp->pagelen -= PAGE_SIZE; | |
137 | } | |
138 | } | |
139 | ||
ca2a05aa | 140 | static __be32 *read_buf(struct nfsd4_compoundargs *argp, u32 nbytes) |
1da177e4 LT |
141 | { |
142 | /* We want more bytes than seem to be available. | |
143 | * Maybe we need a new page, maybe we have just run out | |
144 | */ | |
ca2a05aa | 145 | unsigned int avail = (char *)argp->end - (char *)argp->p; |
2ebbc012 | 146 | __be32 *p; |
1da177e4 LT |
147 | if (avail + argp->pagelen < nbytes) |
148 | return NULL; | |
149 | if (avail + PAGE_SIZE < nbytes) /* need more than a page !! */ | |
150 | return NULL; | |
151 | /* ok, we can do it with the current plus the next page */ | |
152 | if (nbytes <= sizeof(argp->tmp)) | |
153 | p = argp->tmp; | |
154 | else { | |
f99d49ad | 155 | kfree(argp->tmpp); |
1da177e4 LT |
156 | p = argp->tmpp = kmalloc(nbytes, GFP_KERNEL); |
157 | if (!p) | |
158 | return NULL; | |
159 | ||
160 | } | |
ca2a05aa BF |
161 | /* |
162 | * The following memcpy is safe because read_buf is always | |
163 | * called with nbytes > avail, and the two cases above both | |
164 | * guarantee p points to at least nbytes bytes. | |
165 | */ | |
1da177e4 | 166 | memcpy(p, argp->p, avail); |
590b7431 | 167 | next_decode_page(argp); |
1da177e4 LT |
168 | memcpy(((char*)p)+avail, argp->p, (nbytes - avail)); |
169 | argp->p += XDR_QUADLEN(nbytes - avail); | |
170 | return p; | |
171 | } | |
172 | ||
60adfc50 AA |
173 | static int zero_clientid(clientid_t *clid) |
174 | { | |
175 | return (clid->cl_boot == 0) && (clid->cl_id == 0); | |
176 | } | |
177 | ||
2d8498db | 178 | /** |
d5e23383 | 179 | * svcxdr_tmpalloc - allocate memory to be freed after compound processing |
ce043ac8 BF |
180 | * @argp: NFSv4 compound argument structure |
181 | * @p: pointer to be freed (with kfree()) | |
2d8498db CH |
182 | * |
183 | * Marks @p to be freed when processing the compound operation | |
184 | * described in @argp finishes. | |
185 | */ | |
d5e23383 BF |
186 | static void * |
187 | svcxdr_tmpalloc(struct nfsd4_compoundargs *argp, u32 len) | |
1da177e4 | 188 | { |
d5e23383 | 189 | struct svcxdr_tmpbuf *tb; |
1da177e4 | 190 | |
d5e23383 | 191 | tb = kmalloc(sizeof(*tb) + len, GFP_KERNEL); |
1da177e4 | 192 | if (!tb) |
d5e23383 | 193 | return NULL; |
1da177e4 LT |
194 | tb->next = argp->to_free; |
195 | argp->to_free = tb; | |
d5e23383 | 196 | return tb->buf; |
1da177e4 LT |
197 | } |
198 | ||
29c353b3 BF |
199 | /* |
200 | * For xdr strings that need to be passed to other kernel api's | |
201 | * as null-terminated strings. | |
202 | * | |
203 | * Note null-terminating in place usually isn't safe since the | |
204 | * buffer might end on a page boundary. | |
205 | */ | |
206 | static char * | |
207 | svcxdr_dupstr(struct nfsd4_compoundargs *argp, void *buf, u32 len) | |
208 | { | |
d5e23383 | 209 | char *p = svcxdr_tmpalloc(argp, len + 1); |
29c353b3 BF |
210 | |
211 | if (!p) | |
212 | return NULL; | |
213 | memcpy(p, buf, len); | |
214 | p[len] = '\0'; | |
29c353b3 | 215 | return p; |
1da177e4 LT |
216 | } |
217 | ||
2d8498db CH |
218 | /** |
219 | * savemem - duplicate a chunk of memory for later processing | |
220 | * @argp: NFSv4 compound argument structure to be freed with | |
221 | * @p: pointer to be duplicated | |
222 | * @nbytes: length to be duplicated | |
223 | * | |
224 | * Returns a pointer to a copy of @nbytes bytes of memory at @p | |
225 | * that are preserved until processing of the NFSv4 compound | |
226 | * operation described by @argp finishes. | |
227 | */ | |
2ebbc012 | 228 | static char *savemem(struct nfsd4_compoundargs *argp, __be32 *p, int nbytes) |
1da177e4 | 229 | { |
d5e23383 BF |
230 | void *ret; |
231 | ||
232 | ret = svcxdr_tmpalloc(argp, nbytes); | |
233 | if (!ret) | |
1da177e4 | 234 | return NULL; |
d5e23383 BF |
235 | memcpy(ret, p, nbytes); |
236 | return ret; | |
1da177e4 LT |
237 | } |
238 | ||
4c94e13e CH |
239 | /* |
240 | * We require the high 32 bits of 'seconds' to be 0, and | |
241 | * we ignore all 32 bits of 'nseconds'. | |
242 | */ | |
243 | static __be32 | |
244 | nfsd4_decode_time(struct nfsd4_compoundargs *argp, struct timespec *tv) | |
245 | { | |
246 | DECODE_HEAD; | |
247 | u64 sec; | |
248 | ||
249 | READ_BUF(12); | |
250 | p = xdr_decode_hyper(p, &sec); | |
251 | tv->tv_sec = sec; | |
252 | tv->tv_nsec = be32_to_cpup(p++); | |
253 | if (tv->tv_nsec >= (u32)1000000000) | |
254 | return nfserr_inval; | |
255 | ||
256 | DECODE_TAIL; | |
257 | } | |
258 | ||
b37ad28b | 259 | static __be32 |
1da177e4 LT |
260 | nfsd4_decode_bitmap(struct nfsd4_compoundargs *argp, u32 *bmval) |
261 | { | |
262 | u32 bmlen; | |
263 | DECODE_HEAD; | |
264 | ||
265 | bmval[0] = 0; | |
266 | bmval[1] = 0; | |
7e705706 | 267 | bmval[2] = 0; |
1da177e4 LT |
268 | |
269 | READ_BUF(4); | |
06553991 | 270 | bmlen = be32_to_cpup(p++); |
1da177e4 LT |
271 | if (bmlen > 1000) |
272 | goto xdr_error; | |
273 | ||
274 | READ_BUF(bmlen << 2); | |
275 | if (bmlen > 0) | |
06553991 | 276 | bmval[0] = be32_to_cpup(p++); |
1da177e4 | 277 | if (bmlen > 1) |
06553991 | 278 | bmval[1] = be32_to_cpup(p++); |
7e705706 | 279 | if (bmlen > 2) |
06553991 | 280 | bmval[2] = be32_to_cpup(p++); |
1da177e4 LT |
281 | |
282 | DECODE_TAIL; | |
283 | } | |
284 | ||
b37ad28b | 285 | static __be32 |
3c8e0316 | 286 | nfsd4_decode_fattr(struct nfsd4_compoundargs *argp, u32 *bmval, |
18032ca0 DQ |
287 | struct iattr *iattr, struct nfs4_acl **acl, |
288 | struct xdr_netobj *label) | |
1da177e4 LT |
289 | { |
290 | int expected_len, len = 0; | |
291 | u32 dummy32; | |
292 | char *buf; | |
293 | ||
294 | DECODE_HEAD; | |
295 | iattr->ia_valid = 0; | |
296 | if ((status = nfsd4_decode_bitmap(argp, bmval))) | |
297 | return status; | |
298 | ||
1da177e4 | 299 | READ_BUF(4); |
06553991 | 300 | expected_len = be32_to_cpup(p++); |
1da177e4 LT |
301 | |
302 | if (bmval[0] & FATTR4_WORD0_SIZE) { | |
303 | READ_BUF(8); | |
304 | len += 8; | |
542d1ab3 | 305 | p = xdr_decode_hyper(p, &iattr->ia_size); |
1da177e4 LT |
306 | iattr->ia_valid |= ATTR_SIZE; |
307 | } | |
308 | if (bmval[0] & FATTR4_WORD0_ACL) { | |
64a817cf | 309 | u32 nace; |
28e05dd8 | 310 | struct nfs4_ace *ace; |
1da177e4 LT |
311 | |
312 | READ_BUF(4); len += 4; | |
06553991 | 313 | nace = be32_to_cpup(p++); |
1da177e4 | 314 | |
28e05dd8 | 315 | if (nace > NFS4_ACL_MAX) |
798df338 | 316 | return nfserr_fbig; |
28e05dd8 | 317 | |
d5e23383 | 318 | *acl = svcxdr_tmpalloc(argp, nfs4_acl_bytes(nace)); |
eba1c99c KM |
319 | if (*acl == NULL) |
320 | return nfserr_jukebox; | |
321 | ||
28e05dd8 BF |
322 | (*acl)->naces = nace; |
323 | for (ace = (*acl)->aces; ace < (*acl)->aces + nace; ace++) { | |
1da177e4 | 324 | READ_BUF(16); len += 16; |
06553991 BF |
325 | ace->type = be32_to_cpup(p++); |
326 | ace->flag = be32_to_cpup(p++); | |
327 | ace->access_mask = be32_to_cpup(p++); | |
328 | dummy32 = be32_to_cpup(p++); | |
1da177e4 LT |
329 | READ_BUF(dummy32); |
330 | len += XDR_QUADLEN(dummy32) << 2; | |
331 | READMEM(buf, dummy32); | |
28e05dd8 | 332 | ace->whotype = nfs4_acl_get_whotype(buf, dummy32); |
3c726023 | 333 | status = nfs_ok; |
28e05dd8 | 334 | if (ace->whotype != NFS4_ACL_WHO_NAMED) |
ab8e4aee | 335 | ; |
28e05dd8 | 336 | else if (ace->flag & NFS4_ACE_IDENTIFIER_GROUP) |
3c726023 | 337 | status = nfsd_map_name_to_gid(argp->rqstp, |
ab8e4aee | 338 | buf, dummy32, &ace->who_gid); |
1da177e4 | 339 | else |
3c726023 | 340 | status = nfsd_map_name_to_uid(argp->rqstp, |
ab8e4aee | 341 | buf, dummy32, &ace->who_uid); |
3c726023 BF |
342 | if (status) |
343 | return status; | |
1da177e4 LT |
344 | } |
345 | } else | |
346 | *acl = NULL; | |
347 | if (bmval[1] & FATTR4_WORD1_MODE) { | |
348 | READ_BUF(4); | |
349 | len += 4; | |
06553991 | 350 | iattr->ia_mode = be32_to_cpup(p++); |
1da177e4 LT |
351 | iattr->ia_mode &= (S_IFMT | S_IALLUGO); |
352 | iattr->ia_valid |= ATTR_MODE; | |
353 | } | |
354 | if (bmval[1] & FATTR4_WORD1_OWNER) { | |
355 | READ_BUF(4); | |
356 | len += 4; | |
06553991 | 357 | dummy32 = be32_to_cpup(p++); |
1da177e4 LT |
358 | READ_BUF(dummy32); |
359 | len += (XDR_QUADLEN(dummy32) << 2); | |
360 | READMEM(buf, dummy32); | |
47c85291 N |
361 | if ((status = nfsd_map_name_to_uid(argp->rqstp, buf, dummy32, &iattr->ia_uid))) |
362 | return status; | |
1da177e4 LT |
363 | iattr->ia_valid |= ATTR_UID; |
364 | } | |
365 | if (bmval[1] & FATTR4_WORD1_OWNER_GROUP) { | |
366 | READ_BUF(4); | |
367 | len += 4; | |
06553991 | 368 | dummy32 = be32_to_cpup(p++); |
1da177e4 LT |
369 | READ_BUF(dummy32); |
370 | len += (XDR_QUADLEN(dummy32) << 2); | |
371 | READMEM(buf, dummy32); | |
47c85291 N |
372 | if ((status = nfsd_map_name_to_gid(argp->rqstp, buf, dummy32, &iattr->ia_gid))) |
373 | return status; | |
1da177e4 LT |
374 | iattr->ia_valid |= ATTR_GID; |
375 | } | |
376 | if (bmval[1] & FATTR4_WORD1_TIME_ACCESS_SET) { | |
377 | READ_BUF(4); | |
378 | len += 4; | |
06553991 | 379 | dummy32 = be32_to_cpup(p++); |
1da177e4 LT |
380 | switch (dummy32) { |
381 | case NFS4_SET_TO_CLIENT_TIME: | |
1da177e4 | 382 | len += 12; |
4c94e13e CH |
383 | status = nfsd4_decode_time(argp, &iattr->ia_atime); |
384 | if (status) | |
385 | return status; | |
1da177e4 LT |
386 | iattr->ia_valid |= (ATTR_ATIME | ATTR_ATIME_SET); |
387 | break; | |
388 | case NFS4_SET_TO_SERVER_TIME: | |
389 | iattr->ia_valid |= ATTR_ATIME; | |
390 | break; | |
391 | default: | |
392 | goto xdr_error; | |
393 | } | |
394 | } | |
1da177e4 LT |
395 | if (bmval[1] & FATTR4_WORD1_TIME_MODIFY_SET) { |
396 | READ_BUF(4); | |
397 | len += 4; | |
06553991 | 398 | dummy32 = be32_to_cpup(p++); |
1da177e4 LT |
399 | switch (dummy32) { |
400 | case NFS4_SET_TO_CLIENT_TIME: | |
1da177e4 | 401 | len += 12; |
4c94e13e CH |
402 | status = nfsd4_decode_time(argp, &iattr->ia_mtime); |
403 | if (status) | |
404 | return status; | |
1da177e4 LT |
405 | iattr->ia_valid |= (ATTR_MTIME | ATTR_MTIME_SET); |
406 | break; | |
407 | case NFS4_SET_TO_SERVER_TIME: | |
408 | iattr->ia_valid |= ATTR_MTIME; | |
409 | break; | |
410 | default: | |
411 | goto xdr_error; | |
412 | } | |
413 | } | |
18032ca0 DQ |
414 | |
415 | label->len = 0; | |
416 | #ifdef CONFIG_NFSD_V4_SECURITY_LABEL | |
417 | if (bmval[2] & FATTR4_WORD2_SECURITY_LABEL) { | |
418 | READ_BUF(4); | |
419 | len += 4; | |
06553991 | 420 | dummy32 = be32_to_cpup(p++); /* lfs: we don't use it */ |
18032ca0 DQ |
421 | READ_BUF(4); |
422 | len += 4; | |
06553991 | 423 | dummy32 = be32_to_cpup(p++); /* pi: we don't use it either */ |
18032ca0 DQ |
424 | READ_BUF(4); |
425 | len += 4; | |
06553991 | 426 | dummy32 = be32_to_cpup(p++); |
18032ca0 | 427 | READ_BUF(dummy32); |
1ec8c0c4 | 428 | if (dummy32 > NFS4_MAXLABELLEN) |
18032ca0 DQ |
429 | return nfserr_badlabel; |
430 | len += (XDR_QUADLEN(dummy32) << 2); | |
431 | READMEM(buf, dummy32); | |
29c353b3 BF |
432 | label->len = dummy32; |
433 | label->data = svcxdr_dupstr(argp, buf, dummy32); | |
18032ca0 DQ |
434 | if (!label->data) |
435 | return nfserr_jukebox; | |
18032ca0 DQ |
436 | } |
437 | #endif | |
438 | ||
3c8e0316 YZ |
439 | if (bmval[0] & ~NFSD_WRITEABLE_ATTRS_WORD0 |
440 | || bmval[1] & ~NFSD_WRITEABLE_ATTRS_WORD1 | |
441 | || bmval[2] & ~NFSD_WRITEABLE_ATTRS_WORD2) | |
442 | READ_BUF(expected_len - len); | |
443 | else if (len != expected_len) | |
1da177e4 LT |
444 | goto xdr_error; |
445 | ||
446 | DECODE_TAIL; | |
1da177e4 LT |
447 | } |
448 | ||
e31a1b66 BH |
449 | static __be32 |
450 | nfsd4_decode_stateid(struct nfsd4_compoundargs *argp, stateid_t *sid) | |
451 | { | |
452 | DECODE_HEAD; | |
453 | ||
454 | READ_BUF(sizeof(stateid_t)); | |
06553991 | 455 | sid->si_generation = be32_to_cpup(p++); |
e31a1b66 BH |
456 | COPYMEM(&sid->si_opaque, sizeof(stateid_opaque_t)); |
457 | ||
458 | DECODE_TAIL; | |
459 | } | |
460 | ||
b37ad28b | 461 | static __be32 |
1da177e4 LT |
462 | nfsd4_decode_access(struct nfsd4_compoundargs *argp, struct nfsd4_access *access) |
463 | { | |
464 | DECODE_HEAD; | |
465 | ||
466 | READ_BUF(4); | |
06553991 | 467 | access->ac_req_access = be32_to_cpup(p++); |
1da177e4 LT |
468 | |
469 | DECODE_TAIL; | |
470 | } | |
471 | ||
acb2887e BF |
472 | static __be32 nfsd4_decode_cb_sec(struct nfsd4_compoundargs *argp, struct nfsd4_cb_sec *cbs) |
473 | { | |
474 | DECODE_HEAD; | |
12fc3e92 | 475 | u32 dummy, uid, gid; |
acb2887e BF |
476 | char *machine_name; |
477 | int i; | |
478 | int nr_secflavs; | |
479 | ||
480 | /* callback_sec_params4 */ | |
481 | READ_BUF(4); | |
06553991 | 482 | nr_secflavs = be32_to_cpup(p++); |
57569a70 BF |
483 | if (nr_secflavs) |
484 | cbs->flavor = (u32)(-1); | |
485 | else | |
486 | /* Is this legal? Be generous, take it to mean AUTH_NONE: */ | |
487 | cbs->flavor = 0; | |
acb2887e BF |
488 | for (i = 0; i < nr_secflavs; ++i) { |
489 | READ_BUF(4); | |
06553991 | 490 | dummy = be32_to_cpup(p++); |
acb2887e BF |
491 | switch (dummy) { |
492 | case RPC_AUTH_NULL: | |
493 | /* Nothing to read */ | |
12fc3e92 BF |
494 | if (cbs->flavor == (u32)(-1)) |
495 | cbs->flavor = RPC_AUTH_NULL; | |
acb2887e BF |
496 | break; |
497 | case RPC_AUTH_UNIX: | |
498 | READ_BUF(8); | |
499 | /* stamp */ | |
06553991 | 500 | dummy = be32_to_cpup(p++); |
acb2887e BF |
501 | |
502 | /* machine name */ | |
06553991 | 503 | dummy = be32_to_cpup(p++); |
acb2887e BF |
504 | READ_BUF(dummy); |
505 | SAVEMEM(machine_name, dummy); | |
506 | ||
507 | /* uid, gid */ | |
508 | READ_BUF(8); | |
06553991 BF |
509 | uid = be32_to_cpup(p++); |
510 | gid = be32_to_cpup(p++); | |
acb2887e BF |
511 | |
512 | /* more gids */ | |
513 | READ_BUF(4); | |
06553991 | 514 | dummy = be32_to_cpup(p++); |
acb2887e | 515 | READ_BUF(dummy * 4); |
12fc3e92 | 516 | if (cbs->flavor == (u32)(-1)) { |
03bc6d1c EB |
517 | kuid_t kuid = make_kuid(&init_user_ns, uid); |
518 | kgid_t kgid = make_kgid(&init_user_ns, gid); | |
519 | if (uid_valid(kuid) && gid_valid(kgid)) { | |
520 | cbs->uid = kuid; | |
521 | cbs->gid = kgid; | |
522 | cbs->flavor = RPC_AUTH_UNIX; | |
523 | } else { | |
524 | dprintk("RPC_AUTH_UNIX with invalid" | |
525 | "uid or gid ignoring!\n"); | |
526 | } | |
12fc3e92 | 527 | } |
acb2887e BF |
528 | break; |
529 | case RPC_AUTH_GSS: | |
530 | dprintk("RPC_AUTH_GSS callback secflavor " | |
531 | "not supported!\n"); | |
532 | READ_BUF(8); | |
533 | /* gcbp_service */ | |
06553991 | 534 | dummy = be32_to_cpup(p++); |
acb2887e | 535 | /* gcbp_handle_from_server */ |
06553991 | 536 | dummy = be32_to_cpup(p++); |
acb2887e BF |
537 | READ_BUF(dummy); |
538 | p += XDR_QUADLEN(dummy); | |
539 | /* gcbp_handle_from_client */ | |
540 | READ_BUF(4); | |
06553991 | 541 | dummy = be32_to_cpup(p++); |
acb2887e BF |
542 | READ_BUF(dummy); |
543 | break; | |
544 | default: | |
545 | dprintk("Illegal callback secflavor\n"); | |
546 | return nfserr_inval; | |
547 | } | |
548 | } | |
549 | DECODE_TAIL; | |
550 | } | |
551 | ||
cb73a9f4 BF |
552 | static __be32 nfsd4_decode_backchannel_ctl(struct nfsd4_compoundargs *argp, struct nfsd4_backchannel_ctl *bc) |
553 | { | |
554 | DECODE_HEAD; | |
555 | ||
556 | READ_BUF(4); | |
06553991 | 557 | bc->bc_cb_program = be32_to_cpup(p++); |
cb73a9f4 BF |
558 | nfsd4_decode_cb_sec(argp, &bc->bc_cb_sec); |
559 | ||
560 | DECODE_TAIL; | |
561 | } | |
562 | ||
1d1bc8f2 BF |
563 | static __be32 nfsd4_decode_bind_conn_to_session(struct nfsd4_compoundargs *argp, struct nfsd4_bind_conn_to_session *bcts) |
564 | { | |
565 | DECODE_HEAD; | |
1d1bc8f2 BF |
566 | |
567 | READ_BUF(NFS4_MAX_SESSIONID_LEN + 8); | |
568 | COPYMEM(bcts->sessionid.data, NFS4_MAX_SESSIONID_LEN); | |
06553991 | 569 | bcts->dir = be32_to_cpup(p++); |
6ce2357f BS |
570 | /* XXX: skipping ctsa_use_conn_in_rdma_mode. Perhaps Tom Tucker |
571 | * could help us figure out we should be using it. */ | |
1d1bc8f2 BF |
572 | DECODE_TAIL; |
573 | } | |
574 | ||
b37ad28b | 575 | static __be32 |
1da177e4 LT |
576 | nfsd4_decode_close(struct nfsd4_compoundargs *argp, struct nfsd4_close *close) |
577 | { | |
578 | DECODE_HEAD; | |
579 | ||
e31a1b66 | 580 | READ_BUF(4); |
06553991 | 581 | close->cl_seqid = be32_to_cpup(p++); |
e31a1b66 | 582 | return nfsd4_decode_stateid(argp, &close->cl_stateid); |
1da177e4 LT |
583 | |
584 | DECODE_TAIL; | |
585 | } | |
586 | ||
587 | ||
b37ad28b | 588 | static __be32 |
1da177e4 LT |
589 | nfsd4_decode_commit(struct nfsd4_compoundargs *argp, struct nfsd4_commit *commit) |
590 | { | |
591 | DECODE_HEAD; | |
592 | ||
593 | READ_BUF(12); | |
542d1ab3 | 594 | p = xdr_decode_hyper(p, &commit->co_offset); |
06553991 | 595 | commit->co_count = be32_to_cpup(p++); |
1da177e4 LT |
596 | |
597 | DECODE_TAIL; | |
598 | } | |
599 | ||
b37ad28b | 600 | static __be32 |
1da177e4 LT |
601 | nfsd4_decode_create(struct nfsd4_compoundargs *argp, struct nfsd4_create *create) |
602 | { | |
603 | DECODE_HEAD; | |
604 | ||
605 | READ_BUF(4); | |
06553991 | 606 | create->cr_type = be32_to_cpup(p++); |
1da177e4 LT |
607 | switch (create->cr_type) { |
608 | case NF4LNK: | |
609 | READ_BUF(4); | |
7fb84306 BF |
610 | create->cr_datalen = be32_to_cpup(p++); |
611 | READ_BUF(create->cr_datalen); | |
29c353b3 | 612 | create->cr_data = svcxdr_dupstr(argp, p, create->cr_datalen); |
7fb84306 | 613 | if (!create->cr_data) |
76f47128 | 614 | return nfserr_jukebox; |
1da177e4 LT |
615 | break; |
616 | case NF4BLK: | |
617 | case NF4CHR: | |
618 | READ_BUF(8); | |
06553991 BF |
619 | create->cr_specdata1 = be32_to_cpup(p++); |
620 | create->cr_specdata2 = be32_to_cpup(p++); | |
1da177e4 LT |
621 | break; |
622 | case NF4SOCK: | |
623 | case NF4FIFO: | |
624 | case NF4DIR: | |
625 | default: | |
626 | break; | |
627 | } | |
628 | ||
629 | READ_BUF(4); | |
06553991 | 630 | create->cr_namelen = be32_to_cpup(p++); |
1da177e4 LT |
631 | READ_BUF(create->cr_namelen); |
632 | SAVEMEM(create->cr_name, create->cr_namelen); | |
a36b1725 | 633 | if ((status = check_filename(create->cr_name, create->cr_namelen))) |
1da177e4 LT |
634 | return status; |
635 | ||
3c8e0316 | 636 | status = nfsd4_decode_fattr(argp, create->cr_bmval, &create->cr_iattr, |
18032ca0 | 637 | &create->cr_acl, &create->cr_label); |
c0d6fc8a | 638 | if (status) |
1da177e4 LT |
639 | goto out; |
640 | ||
641 | DECODE_TAIL; | |
642 | } | |
643 | ||
b37ad28b | 644 | static inline __be32 |
1da177e4 LT |
645 | nfsd4_decode_delegreturn(struct nfsd4_compoundargs *argp, struct nfsd4_delegreturn *dr) |
646 | { | |
e31a1b66 | 647 | return nfsd4_decode_stateid(argp, &dr->dr_stateid); |
1da177e4 LT |
648 | } |
649 | ||
b37ad28b | 650 | static inline __be32 |
1da177e4 LT |
651 | nfsd4_decode_getattr(struct nfsd4_compoundargs *argp, struct nfsd4_getattr *getattr) |
652 | { | |
653 | return nfsd4_decode_bitmap(argp, getattr->ga_bmval); | |
654 | } | |
655 | ||
b37ad28b | 656 | static __be32 |
1da177e4 LT |
657 | nfsd4_decode_link(struct nfsd4_compoundargs *argp, struct nfsd4_link *link) |
658 | { | |
659 | DECODE_HEAD; | |
660 | ||
661 | READ_BUF(4); | |
06553991 | 662 | link->li_namelen = be32_to_cpup(p++); |
1da177e4 LT |
663 | READ_BUF(link->li_namelen); |
664 | SAVEMEM(link->li_name, link->li_namelen); | |
a36b1725 | 665 | if ((status = check_filename(link->li_name, link->li_namelen))) |
1da177e4 LT |
666 | return status; |
667 | ||
668 | DECODE_TAIL; | |
669 | } | |
670 | ||
b37ad28b | 671 | static __be32 |
1da177e4 LT |
672 | nfsd4_decode_lock(struct nfsd4_compoundargs *argp, struct nfsd4_lock *lock) |
673 | { | |
674 | DECODE_HEAD; | |
675 | ||
1da177e4 LT |
676 | /* |
677 | * type, reclaim(boolean), offset, length, new_lock_owner(boolean) | |
678 | */ | |
679 | READ_BUF(28); | |
06553991 | 680 | lock->lk_type = be32_to_cpup(p++); |
1da177e4 LT |
681 | if ((lock->lk_type < NFS4_READ_LT) || (lock->lk_type > NFS4_WRITEW_LT)) |
682 | goto xdr_error; | |
06553991 | 683 | lock->lk_reclaim = be32_to_cpup(p++); |
542d1ab3 BF |
684 | p = xdr_decode_hyper(p, &lock->lk_offset); |
685 | p = xdr_decode_hyper(p, &lock->lk_length); | |
06553991 | 686 | lock->lk_is_new = be32_to_cpup(p++); |
1da177e4 LT |
687 | |
688 | if (lock->lk_is_new) { | |
e31a1b66 | 689 | READ_BUF(4); |
06553991 | 690 | lock->lk_new_open_seqid = be32_to_cpup(p++); |
e31a1b66 BH |
691 | status = nfsd4_decode_stateid(argp, &lock->lk_new_open_stateid); |
692 | if (status) | |
693 | return status; | |
694 | READ_BUF(8 + sizeof(clientid_t)); | |
06553991 | 695 | lock->lk_new_lock_seqid = be32_to_cpup(p++); |
1da177e4 | 696 | COPYMEM(&lock->lk_new_clientid, sizeof(clientid_t)); |
06553991 | 697 | lock->lk_new_owner.len = be32_to_cpup(p++); |
1da177e4 LT |
698 | READ_BUF(lock->lk_new_owner.len); |
699 | READMEM(lock->lk_new_owner.data, lock->lk_new_owner.len); | |
700 | } else { | |
e31a1b66 BH |
701 | status = nfsd4_decode_stateid(argp, &lock->lk_old_lock_stateid); |
702 | if (status) | |
703 | return status; | |
704 | READ_BUF(4); | |
06553991 | 705 | lock->lk_old_lock_seqid = be32_to_cpup(p++); |
1da177e4 LT |
706 | } |
707 | ||
708 | DECODE_TAIL; | |
709 | } | |
710 | ||
b37ad28b | 711 | static __be32 |
1da177e4 LT |
712 | nfsd4_decode_lockt(struct nfsd4_compoundargs *argp, struct nfsd4_lockt *lockt) |
713 | { | |
714 | DECODE_HEAD; | |
715 | ||
716 | READ_BUF(32); | |
06553991 | 717 | lockt->lt_type = be32_to_cpup(p++); |
1da177e4 LT |
718 | if((lockt->lt_type < NFS4_READ_LT) || (lockt->lt_type > NFS4_WRITEW_LT)) |
719 | goto xdr_error; | |
542d1ab3 BF |
720 | p = xdr_decode_hyper(p, &lockt->lt_offset); |
721 | p = xdr_decode_hyper(p, &lockt->lt_length); | |
1da177e4 | 722 | COPYMEM(&lockt->lt_clientid, 8); |
06553991 | 723 | lockt->lt_owner.len = be32_to_cpup(p++); |
1da177e4 LT |
724 | READ_BUF(lockt->lt_owner.len); |
725 | READMEM(lockt->lt_owner.data, lockt->lt_owner.len); | |
726 | ||
727 | DECODE_TAIL; | |
728 | } | |
729 | ||
b37ad28b | 730 | static __be32 |
1da177e4 LT |
731 | nfsd4_decode_locku(struct nfsd4_compoundargs *argp, struct nfsd4_locku *locku) |
732 | { | |
733 | DECODE_HEAD; | |
734 | ||
e31a1b66 | 735 | READ_BUF(8); |
06553991 | 736 | locku->lu_type = be32_to_cpup(p++); |
1da177e4 LT |
737 | if ((locku->lu_type < NFS4_READ_LT) || (locku->lu_type > NFS4_WRITEW_LT)) |
738 | goto xdr_error; | |
06553991 | 739 | locku->lu_seqid = be32_to_cpup(p++); |
e31a1b66 BH |
740 | status = nfsd4_decode_stateid(argp, &locku->lu_stateid); |
741 | if (status) | |
742 | return status; | |
743 | READ_BUF(16); | |
542d1ab3 BF |
744 | p = xdr_decode_hyper(p, &locku->lu_offset); |
745 | p = xdr_decode_hyper(p, &locku->lu_length); | |
1da177e4 LT |
746 | |
747 | DECODE_TAIL; | |
748 | } | |
749 | ||
b37ad28b | 750 | static __be32 |
1da177e4 LT |
751 | nfsd4_decode_lookup(struct nfsd4_compoundargs *argp, struct nfsd4_lookup *lookup) |
752 | { | |
753 | DECODE_HEAD; | |
754 | ||
755 | READ_BUF(4); | |
06553991 | 756 | lookup->lo_len = be32_to_cpup(p++); |
1da177e4 LT |
757 | READ_BUF(lookup->lo_len); |
758 | SAVEMEM(lookup->lo_name, lookup->lo_len); | |
a36b1725 | 759 | if ((status = check_filename(lookup->lo_name, lookup->lo_len))) |
1da177e4 LT |
760 | return status; |
761 | ||
762 | DECODE_TAIL; | |
763 | } | |
764 | ||
2c8bd7e0 | 765 | static __be32 nfsd4_decode_share_access(struct nfsd4_compoundargs *argp, u32 *share_access, u32 *deleg_want, u32 *deleg_when) |
04f9e664 BF |
766 | { |
767 | __be32 *p; | |
768 | u32 w; | |
769 | ||
770 | READ_BUF(4); | |
06553991 | 771 | w = be32_to_cpup(p++); |
2c8bd7e0 BH |
772 | *share_access = w & NFS4_SHARE_ACCESS_MASK; |
773 | *deleg_want = w & NFS4_SHARE_WANT_MASK; | |
774 | if (deleg_when) | |
775 | *deleg_when = w & NFS4_SHARE_WHEN_MASK; | |
776 | ||
04f9e664 BF |
777 | switch (w & NFS4_SHARE_ACCESS_MASK) { |
778 | case NFS4_SHARE_ACCESS_READ: | |
779 | case NFS4_SHARE_ACCESS_WRITE: | |
780 | case NFS4_SHARE_ACCESS_BOTH: | |
781 | break; | |
782 | default: | |
783 | return nfserr_bad_xdr; | |
784 | } | |
fc0d14fe | 785 | w &= ~NFS4_SHARE_ACCESS_MASK; |
04f9e664 BF |
786 | if (!w) |
787 | return nfs_ok; | |
788 | if (!argp->minorversion) | |
789 | return nfserr_bad_xdr; | |
790 | switch (w & NFS4_SHARE_WANT_MASK) { | |
791 | case NFS4_SHARE_WANT_NO_PREFERENCE: | |
792 | case NFS4_SHARE_WANT_READ_DELEG: | |
793 | case NFS4_SHARE_WANT_WRITE_DELEG: | |
794 | case NFS4_SHARE_WANT_ANY_DELEG: | |
795 | case NFS4_SHARE_WANT_NO_DELEG: | |
796 | case NFS4_SHARE_WANT_CANCEL: | |
797 | break; | |
798 | default: | |
799 | return nfserr_bad_xdr; | |
800 | } | |
92bac8c5 | 801 | w &= ~NFS4_SHARE_WANT_MASK; |
04f9e664 BF |
802 | if (!w) |
803 | return nfs_ok; | |
2c8bd7e0 BH |
804 | |
805 | if (!deleg_when) /* open_downgrade */ | |
806 | return nfserr_inval; | |
04f9e664 BF |
807 | switch (w) { |
808 | case NFS4_SHARE_SIGNAL_DELEG_WHEN_RESRC_AVAIL: | |
809 | case NFS4_SHARE_PUSH_DELEG_WHEN_UNCONTENDED: | |
c668fc6d BH |
810 | case (NFS4_SHARE_SIGNAL_DELEG_WHEN_RESRC_AVAIL | |
811 | NFS4_SHARE_PUSH_DELEG_WHEN_UNCONTENDED): | |
04f9e664 BF |
812 | return nfs_ok; |
813 | } | |
814 | xdr_error: | |
815 | return nfserr_bad_xdr; | |
816 | } | |
817 | ||
818 | static __be32 nfsd4_decode_share_deny(struct nfsd4_compoundargs *argp, u32 *x) | |
819 | { | |
820 | __be32 *p; | |
821 | ||
822 | READ_BUF(4); | |
06553991 | 823 | *x = be32_to_cpup(p++); |
04f9e664 | 824 | /* Note: unlinke access bits, deny bits may be zero. */ |
01cd4afa | 825 | if (*x & ~NFS4_SHARE_DENY_BOTH) |
04f9e664 BF |
826 | return nfserr_bad_xdr; |
827 | return nfs_ok; | |
828 | xdr_error: | |
829 | return nfserr_bad_xdr; | |
830 | } | |
831 | ||
a084daf5 BF |
832 | static __be32 nfsd4_decode_opaque(struct nfsd4_compoundargs *argp, struct xdr_netobj *o) |
833 | { | |
834 | __be32 *p; | |
835 | ||
836 | READ_BUF(4); | |
06553991 | 837 | o->len = be32_to_cpup(p++); |
a084daf5 BF |
838 | |
839 | if (o->len == 0 || o->len > NFS4_OPAQUE_LIMIT) | |
840 | return nfserr_bad_xdr; | |
841 | ||
842 | READ_BUF(o->len); | |
843 | SAVEMEM(o->data, o->len); | |
844 | return nfs_ok; | |
845 | xdr_error: | |
846 | return nfserr_bad_xdr; | |
847 | } | |
848 | ||
b37ad28b | 849 | static __be32 |
1da177e4 LT |
850 | nfsd4_decode_open(struct nfsd4_compoundargs *argp, struct nfsd4_open *open) |
851 | { | |
852 | DECODE_HEAD; | |
2c8bd7e0 | 853 | u32 dummy; |
1da177e4 LT |
854 | |
855 | memset(open->op_bmval, 0, sizeof(open->op_bmval)); | |
856 | open->op_iattr.ia_valid = 0; | |
fe0750e5 | 857 | open->op_openowner = NULL; |
1da177e4 | 858 | |
9d313b17 | 859 | open->op_xdr_error = 0; |
1da177e4 | 860 | /* seqid, share_access, share_deny, clientid, ownerlen */ |
04f9e664 | 861 | READ_BUF(4); |
06553991 | 862 | open->op_seqid = be32_to_cpup(p++); |
2c8bd7e0 BH |
863 | /* decode, yet ignore deleg_when until supported */ |
864 | status = nfsd4_decode_share_access(argp, &open->op_share_access, | |
865 | &open->op_deleg_want, &dummy); | |
04f9e664 BF |
866 | if (status) |
867 | goto xdr_error; | |
868 | status = nfsd4_decode_share_deny(argp, &open->op_share_deny); | |
869 | if (status) | |
870 | goto xdr_error; | |
a084daf5 | 871 | READ_BUF(sizeof(clientid_t)); |
1da177e4 | 872 | COPYMEM(&open->op_clientid, sizeof(clientid_t)); |
a084daf5 BF |
873 | status = nfsd4_decode_opaque(argp, &open->op_owner); |
874 | if (status) | |
875 | goto xdr_error; | |
876 | READ_BUF(4); | |
06553991 | 877 | open->op_create = be32_to_cpup(p++); |
1da177e4 LT |
878 | switch (open->op_create) { |
879 | case NFS4_OPEN_NOCREATE: | |
880 | break; | |
881 | case NFS4_OPEN_CREATE: | |
882 | READ_BUF(4); | |
06553991 | 883 | open->op_createmode = be32_to_cpup(p++); |
1da177e4 LT |
884 | switch (open->op_createmode) { |
885 | case NFS4_CREATE_UNCHECKED: | |
886 | case NFS4_CREATE_GUARDED: | |
c0d6fc8a | 887 | status = nfsd4_decode_fattr(argp, open->op_bmval, |
18032ca0 | 888 | &open->op_iattr, &open->op_acl, &open->op_label); |
c0d6fc8a | 889 | if (status) |
1da177e4 LT |
890 | goto out; |
891 | break; | |
892 | case NFS4_CREATE_EXCLUSIVE: | |
ab4684d1 CL |
893 | READ_BUF(NFS4_VERIFIER_SIZE); |
894 | COPYMEM(open->op_verf.data, NFS4_VERIFIER_SIZE); | |
1da177e4 | 895 | break; |
79fb54ab BH |
896 | case NFS4_CREATE_EXCLUSIVE4_1: |
897 | if (argp->minorversion < 1) | |
898 | goto xdr_error; | |
ab4684d1 CL |
899 | READ_BUF(NFS4_VERIFIER_SIZE); |
900 | COPYMEM(open->op_verf.data, NFS4_VERIFIER_SIZE); | |
79fb54ab | 901 | status = nfsd4_decode_fattr(argp, open->op_bmval, |
18032ca0 | 902 | &open->op_iattr, &open->op_acl, &open->op_label); |
79fb54ab BH |
903 | if (status) |
904 | goto out; | |
905 | break; | |
1da177e4 LT |
906 | default: |
907 | goto xdr_error; | |
908 | } | |
909 | break; | |
910 | default: | |
911 | goto xdr_error; | |
912 | } | |
913 | ||
914 | /* open_claim */ | |
915 | READ_BUF(4); | |
06553991 | 916 | open->op_claim_type = be32_to_cpup(p++); |
1da177e4 LT |
917 | switch (open->op_claim_type) { |
918 | case NFS4_OPEN_CLAIM_NULL: | |
919 | case NFS4_OPEN_CLAIM_DELEGATE_PREV: | |
920 | READ_BUF(4); | |
06553991 | 921 | open->op_fname.len = be32_to_cpup(p++); |
1da177e4 LT |
922 | READ_BUF(open->op_fname.len); |
923 | SAVEMEM(open->op_fname.data, open->op_fname.len); | |
a36b1725 | 924 | if ((status = check_filename(open->op_fname.data, open->op_fname.len))) |
1da177e4 LT |
925 | return status; |
926 | break; | |
927 | case NFS4_OPEN_CLAIM_PREVIOUS: | |
928 | READ_BUF(4); | |
06553991 | 929 | open->op_delegate_type = be32_to_cpup(p++); |
1da177e4 LT |
930 | break; |
931 | case NFS4_OPEN_CLAIM_DELEGATE_CUR: | |
e31a1b66 BH |
932 | status = nfsd4_decode_stateid(argp, &open->op_delegate_stateid); |
933 | if (status) | |
934 | return status; | |
935 | READ_BUF(4); | |
06553991 | 936 | open->op_fname.len = be32_to_cpup(p++); |
1da177e4 LT |
937 | READ_BUF(open->op_fname.len); |
938 | SAVEMEM(open->op_fname.data, open->op_fname.len); | |
a36b1725 | 939 | if ((status = check_filename(open->op_fname.data, open->op_fname.len))) |
1da177e4 LT |
940 | return status; |
941 | break; | |
8b289b2c BF |
942 | case NFS4_OPEN_CLAIM_FH: |
943 | case NFS4_OPEN_CLAIM_DELEG_PREV_FH: | |
944 | if (argp->minorversion < 1) | |
945 | goto xdr_error; | |
946 | /* void */ | |
947 | break; | |
948 | case NFS4_OPEN_CLAIM_DELEG_CUR_FH: | |
949 | if (argp->minorversion < 1) | |
950 | goto xdr_error; | |
951 | status = nfsd4_decode_stateid(argp, &open->op_delegate_stateid); | |
952 | if (status) | |
953 | return status; | |
954 | break; | |
1da177e4 LT |
955 | default: |
956 | goto xdr_error; | |
957 | } | |
958 | ||
959 | DECODE_TAIL; | |
960 | } | |
961 | ||
b37ad28b | 962 | static __be32 |
1da177e4 LT |
963 | nfsd4_decode_open_confirm(struct nfsd4_compoundargs *argp, struct nfsd4_open_confirm *open_conf) |
964 | { | |
965 | DECODE_HEAD; | |
e1a90ebd AS |
966 | |
967 | if (argp->minorversion >= 1) | |
968 | return nfserr_notsupp; | |
969 | ||
e31a1b66 BH |
970 | status = nfsd4_decode_stateid(argp, &open_conf->oc_req_stateid); |
971 | if (status) | |
972 | return status; | |
973 | READ_BUF(4); | |
06553991 | 974 | open_conf->oc_seqid = be32_to_cpup(p++); |
e1a90ebd | 975 | |
1da177e4 LT |
976 | DECODE_TAIL; |
977 | } | |
978 | ||
b37ad28b | 979 | static __be32 |
1da177e4 LT |
980 | nfsd4_decode_open_downgrade(struct nfsd4_compoundargs *argp, struct nfsd4_open_downgrade *open_down) |
981 | { | |
982 | DECODE_HEAD; | |
983 | ||
e31a1b66 BH |
984 | status = nfsd4_decode_stateid(argp, &open_down->od_stateid); |
985 | if (status) | |
986 | return status; | |
04f9e664 | 987 | READ_BUF(4); |
06553991 | 988 | open_down->od_seqid = be32_to_cpup(p++); |
2c8bd7e0 BH |
989 | status = nfsd4_decode_share_access(argp, &open_down->od_share_access, |
990 | &open_down->od_deleg_want, NULL); | |
04f9e664 BF |
991 | if (status) |
992 | return status; | |
993 | status = nfsd4_decode_share_deny(argp, &open_down->od_share_deny); | |
994 | if (status) | |
995 | return status; | |
1da177e4 LT |
996 | DECODE_TAIL; |
997 | } | |
998 | ||
b37ad28b | 999 | static __be32 |
1da177e4 LT |
1000 | nfsd4_decode_putfh(struct nfsd4_compoundargs *argp, struct nfsd4_putfh *putfh) |
1001 | { | |
1002 | DECODE_HEAD; | |
1003 | ||
1004 | READ_BUF(4); | |
06553991 | 1005 | putfh->pf_fhlen = be32_to_cpup(p++); |
1da177e4 LT |
1006 | if (putfh->pf_fhlen > NFS4_FHSIZE) |
1007 | goto xdr_error; | |
1008 | READ_BUF(putfh->pf_fhlen); | |
1009 | SAVEMEM(putfh->pf_fhval, putfh->pf_fhlen); | |
1010 | ||
1011 | DECODE_TAIL; | |
1012 | } | |
1013 | ||
e1a90ebd AS |
1014 | static __be32 |
1015 | nfsd4_decode_putpubfh(struct nfsd4_compoundargs *argp, void *p) | |
1016 | { | |
1017 | if (argp->minorversion == 0) | |
1018 | return nfs_ok; | |
1019 | return nfserr_notsupp; | |
1020 | } | |
1021 | ||
b37ad28b | 1022 | static __be32 |
1da177e4 LT |
1023 | nfsd4_decode_read(struct nfsd4_compoundargs *argp, struct nfsd4_read *read) |
1024 | { | |
1025 | DECODE_HEAD; | |
1026 | ||
e31a1b66 BH |
1027 | status = nfsd4_decode_stateid(argp, &read->rd_stateid); |
1028 | if (status) | |
1029 | return status; | |
1030 | READ_BUF(12); | |
542d1ab3 | 1031 | p = xdr_decode_hyper(p, &read->rd_offset); |
06553991 | 1032 | read->rd_length = be32_to_cpup(p++); |
1da177e4 LT |
1033 | |
1034 | DECODE_TAIL; | |
1035 | } | |
1036 | ||
b37ad28b | 1037 | static __be32 |
1da177e4 LT |
1038 | nfsd4_decode_readdir(struct nfsd4_compoundargs *argp, struct nfsd4_readdir *readdir) |
1039 | { | |
1040 | DECODE_HEAD; | |
1041 | ||
1042 | READ_BUF(24); | |
542d1ab3 | 1043 | p = xdr_decode_hyper(p, &readdir->rd_cookie); |
1da177e4 | 1044 | COPYMEM(readdir->rd_verf.data, sizeof(readdir->rd_verf.data)); |
06553991 BF |
1045 | readdir->rd_dircount = be32_to_cpup(p++); |
1046 | readdir->rd_maxcount = be32_to_cpup(p++); | |
1da177e4 LT |
1047 | if ((status = nfsd4_decode_bitmap(argp, readdir->rd_bmval))) |
1048 | goto out; | |
1049 | ||
1050 | DECODE_TAIL; | |
1051 | } | |
1052 | ||
b37ad28b | 1053 | static __be32 |
1da177e4 LT |
1054 | nfsd4_decode_remove(struct nfsd4_compoundargs *argp, struct nfsd4_remove *remove) |
1055 | { | |
1056 | DECODE_HEAD; | |
1057 | ||
1058 | READ_BUF(4); | |
06553991 | 1059 | remove->rm_namelen = be32_to_cpup(p++); |
1da177e4 LT |
1060 | READ_BUF(remove->rm_namelen); |
1061 | SAVEMEM(remove->rm_name, remove->rm_namelen); | |
a36b1725 | 1062 | if ((status = check_filename(remove->rm_name, remove->rm_namelen))) |
1da177e4 LT |
1063 | return status; |
1064 | ||
1065 | DECODE_TAIL; | |
1066 | } | |
1067 | ||
b37ad28b | 1068 | static __be32 |
1da177e4 LT |
1069 | nfsd4_decode_rename(struct nfsd4_compoundargs *argp, struct nfsd4_rename *rename) |
1070 | { | |
1071 | DECODE_HEAD; | |
1072 | ||
1073 | READ_BUF(4); | |
06553991 | 1074 | rename->rn_snamelen = be32_to_cpup(p++); |
4aed9c46 | 1075 | READ_BUF(rename->rn_snamelen); |
1da177e4 | 1076 | SAVEMEM(rename->rn_sname, rename->rn_snamelen); |
4aed9c46 | 1077 | READ_BUF(4); |
06553991 | 1078 | rename->rn_tnamelen = be32_to_cpup(p++); |
1da177e4 LT |
1079 | READ_BUF(rename->rn_tnamelen); |
1080 | SAVEMEM(rename->rn_tname, rename->rn_tnamelen); | |
a36b1725 | 1081 | if ((status = check_filename(rename->rn_sname, rename->rn_snamelen))) |
1da177e4 | 1082 | return status; |
a36b1725 | 1083 | if ((status = check_filename(rename->rn_tname, rename->rn_tnamelen))) |
1da177e4 LT |
1084 | return status; |
1085 | ||
1086 | DECODE_TAIL; | |
1087 | } | |
1088 | ||
b37ad28b | 1089 | static __be32 |
1da177e4 LT |
1090 | nfsd4_decode_renew(struct nfsd4_compoundargs *argp, clientid_t *clientid) |
1091 | { | |
1092 | DECODE_HEAD; | |
1093 | ||
e1a90ebd AS |
1094 | if (argp->minorversion >= 1) |
1095 | return nfserr_notsupp; | |
1096 | ||
1da177e4 LT |
1097 | READ_BUF(sizeof(clientid_t)); |
1098 | COPYMEM(clientid, sizeof(clientid_t)); | |
1099 | ||
1100 | DECODE_TAIL; | |
1101 | } | |
1102 | ||
dcb488a3 AA |
1103 | static __be32 |
1104 | nfsd4_decode_secinfo(struct nfsd4_compoundargs *argp, | |
1105 | struct nfsd4_secinfo *secinfo) | |
1106 | { | |
1107 | DECODE_HEAD; | |
1108 | ||
1109 | READ_BUF(4); | |
06553991 | 1110 | secinfo->si_namelen = be32_to_cpup(p++); |
dcb488a3 AA |
1111 | READ_BUF(secinfo->si_namelen); |
1112 | SAVEMEM(secinfo->si_name, secinfo->si_namelen); | |
a36b1725 | 1113 | status = check_filename(secinfo->si_name, secinfo->si_namelen); |
dcb488a3 AA |
1114 | if (status) |
1115 | return status; | |
1116 | DECODE_TAIL; | |
1117 | } | |
1118 | ||
04f4ad16 BF |
1119 | static __be32 |
1120 | nfsd4_decode_secinfo_no_name(struct nfsd4_compoundargs *argp, | |
1121 | struct nfsd4_secinfo_no_name *sin) | |
1122 | { | |
1123 | DECODE_HEAD; | |
1124 | ||
1125 | READ_BUF(4); | |
06553991 | 1126 | sin->sin_style = be32_to_cpup(p++); |
04f4ad16 BF |
1127 | DECODE_TAIL; |
1128 | } | |
1129 | ||
b37ad28b | 1130 | static __be32 |
1da177e4 LT |
1131 | nfsd4_decode_setattr(struct nfsd4_compoundargs *argp, struct nfsd4_setattr *setattr) |
1132 | { | |
e31a1b66 | 1133 | __be32 status; |
1da177e4 | 1134 | |
e31a1b66 BH |
1135 | status = nfsd4_decode_stateid(argp, &setattr->sa_stateid); |
1136 | if (status) | |
1137 | return status; | |
3c8e0316 | 1138 | return nfsd4_decode_fattr(argp, setattr->sa_bmval, &setattr->sa_iattr, |
18032ca0 | 1139 | &setattr->sa_acl, &setattr->sa_label); |
1da177e4 LT |
1140 | } |
1141 | ||
b37ad28b | 1142 | static __be32 |
1da177e4 LT |
1143 | nfsd4_decode_setclientid(struct nfsd4_compoundargs *argp, struct nfsd4_setclientid *setclientid) |
1144 | { | |
1145 | DECODE_HEAD; | |
1146 | ||
e1a90ebd AS |
1147 | if (argp->minorversion >= 1) |
1148 | return nfserr_notsupp; | |
1149 | ||
ab4684d1 CL |
1150 | READ_BUF(NFS4_VERIFIER_SIZE); |
1151 | COPYMEM(setclientid->se_verf.data, NFS4_VERIFIER_SIZE); | |
1da177e4 | 1152 | |
a084daf5 BF |
1153 | status = nfsd4_decode_opaque(argp, &setclientid->se_name); |
1154 | if (status) | |
1155 | return nfserr_bad_xdr; | |
1156 | READ_BUF(8); | |
06553991 BF |
1157 | setclientid->se_callback_prog = be32_to_cpup(p++); |
1158 | setclientid->se_callback_netid_len = be32_to_cpup(p++); | |
4aed9c46 | 1159 | READ_BUF(setclientid->se_callback_netid_len); |
1da177e4 | 1160 | SAVEMEM(setclientid->se_callback_netid_val, setclientid->se_callback_netid_len); |
4aed9c46 | 1161 | READ_BUF(4); |
06553991 | 1162 | setclientid->se_callback_addr_len = be32_to_cpup(p++); |
1da177e4 | 1163 | |
4aed9c46 | 1164 | READ_BUF(setclientid->se_callback_addr_len); |
1da177e4 | 1165 | SAVEMEM(setclientid->se_callback_addr_val, setclientid->se_callback_addr_len); |
4aed9c46 | 1166 | READ_BUF(4); |
06553991 | 1167 | setclientid->se_callback_ident = be32_to_cpup(p++); |
1da177e4 LT |
1168 | |
1169 | DECODE_TAIL; | |
1170 | } | |
1171 | ||
b37ad28b | 1172 | static __be32 |
1da177e4 LT |
1173 | nfsd4_decode_setclientid_confirm(struct nfsd4_compoundargs *argp, struct nfsd4_setclientid_confirm *scd_c) |
1174 | { | |
1175 | DECODE_HEAD; | |
1176 | ||
e1a90ebd AS |
1177 | if (argp->minorversion >= 1) |
1178 | return nfserr_notsupp; | |
1179 | ||
ab4684d1 | 1180 | READ_BUF(8 + NFS4_VERIFIER_SIZE); |
1da177e4 | 1181 | COPYMEM(&scd_c->sc_clientid, 8); |
ab4684d1 | 1182 | COPYMEM(&scd_c->sc_confirm, NFS4_VERIFIER_SIZE); |
1da177e4 LT |
1183 | |
1184 | DECODE_TAIL; | |
1185 | } | |
1186 | ||
1187 | /* Also used for NVERIFY */ | |
b37ad28b | 1188 | static __be32 |
1da177e4 LT |
1189 | nfsd4_decode_verify(struct nfsd4_compoundargs *argp, struct nfsd4_verify *verify) |
1190 | { | |
1da177e4 LT |
1191 | DECODE_HEAD; |
1192 | ||
1193 | if ((status = nfsd4_decode_bitmap(argp, verify->ve_bmval))) | |
1194 | goto out; | |
1195 | ||
1196 | /* For convenience's sake, we compare raw xdr'd attributes in | |
e5f95703 BF |
1197 | * nfsd4_proc_verify */ |
1198 | ||
1da177e4 | 1199 | READ_BUF(4); |
06553991 | 1200 | verify->ve_attrlen = be32_to_cpup(p++); |
1da177e4 LT |
1201 | READ_BUF(verify->ve_attrlen); |
1202 | SAVEMEM(verify->ve_attrval, verify->ve_attrlen); | |
1203 | ||
1204 | DECODE_TAIL; | |
1205 | } | |
1206 | ||
b37ad28b | 1207 | static __be32 |
1da177e4 LT |
1208 | nfsd4_decode_write(struct nfsd4_compoundargs *argp, struct nfsd4_write *write) |
1209 | { | |
1210 | int avail; | |
1da177e4 LT |
1211 | int len; |
1212 | DECODE_HEAD; | |
1213 | ||
e31a1b66 BH |
1214 | status = nfsd4_decode_stateid(argp, &write->wr_stateid); |
1215 | if (status) | |
1216 | return status; | |
1217 | READ_BUF(16); | |
542d1ab3 | 1218 | p = xdr_decode_hyper(p, &write->wr_offset); |
06553991 | 1219 | write->wr_stable_how = be32_to_cpup(p++); |
1da177e4 LT |
1220 | if (write->wr_stable_how > 2) |
1221 | goto xdr_error; | |
06553991 | 1222 | write->wr_buflen = be32_to_cpup(p++); |
1da177e4 LT |
1223 | |
1224 | /* Sorry .. no magic macros for this.. * | |
1225 | * READ_BUF(write->wr_buflen); | |
1226 | * SAVEMEM(write->wr_buf, write->wr_buflen); | |
1227 | */ | |
1228 | avail = (char*)argp->end - (char*)argp->p; | |
1229 | if (avail + argp->pagelen < write->wr_buflen) { | |
817cb9d4 CL |
1230 | dprintk("NFSD: xdr error (%s:%d)\n", |
1231 | __FILE__, __LINE__); | |
1da177e4 LT |
1232 | goto xdr_error; |
1233 | } | |
70cc7f75 BF |
1234 | write->wr_head.iov_base = p; |
1235 | write->wr_head.iov_len = avail; | |
70cc7f75 | 1236 | write->wr_pagelist = argp->pagelist; |
5a80a54d BF |
1237 | |
1238 | len = XDR_QUADLEN(write->wr_buflen) << 2; | |
1239 | if (len >= avail) { | |
1240 | int pages; | |
1241 | ||
1242 | len -= avail; | |
1243 | ||
1244 | pages = len >> PAGE_SHIFT; | |
1245 | argp->pagelist += pages; | |
1246 | argp->pagelen -= pages * PAGE_SIZE; | |
1247 | len -= pages * PAGE_SIZE; | |
1248 | ||
1249 | argp->p = (__be32 *)page_address(argp->pagelist[0]); | |
365da4ad | 1250 | argp->pagelist++; |
5a80a54d | 1251 | argp->end = argp->p + XDR_QUADLEN(PAGE_SIZE); |
1da177e4 | 1252 | } |
5a80a54d | 1253 | argp->p += XDR_QUADLEN(len); |
1da177e4 LT |
1254 | |
1255 | DECODE_TAIL; | |
1256 | } | |
1257 | ||
b37ad28b | 1258 | static __be32 |
1da177e4 LT |
1259 | nfsd4_decode_release_lockowner(struct nfsd4_compoundargs *argp, struct nfsd4_release_lockowner *rlockowner) |
1260 | { | |
1261 | DECODE_HEAD; | |
1262 | ||
e1a90ebd AS |
1263 | if (argp->minorversion >= 1) |
1264 | return nfserr_notsupp; | |
1265 | ||
1da177e4 LT |
1266 | READ_BUF(12); |
1267 | COPYMEM(&rlockowner->rl_clientid, sizeof(clientid_t)); | |
06553991 | 1268 | rlockowner->rl_owner.len = be32_to_cpup(p++); |
1da177e4 LT |
1269 | READ_BUF(rlockowner->rl_owner.len); |
1270 | READMEM(rlockowner->rl_owner.data, rlockowner->rl_owner.len); | |
1271 | ||
60adfc50 AA |
1272 | if (argp->minorversion && !zero_clientid(&rlockowner->rl_clientid)) |
1273 | return nfserr_inval; | |
1da177e4 LT |
1274 | DECODE_TAIL; |
1275 | } | |
1276 | ||
2db134eb AA |
1277 | static __be32 |
1278 | nfsd4_decode_exchange_id(struct nfsd4_compoundargs *argp, | |
0733d213 | 1279 | struct nfsd4_exchange_id *exid) |
2db134eb | 1280 | { |
5afa040b | 1281 | int dummy, tmp; |
0733d213 AA |
1282 | DECODE_HEAD; |
1283 | ||
1284 | READ_BUF(NFS4_VERIFIER_SIZE); | |
1285 | COPYMEM(exid->verifier.data, NFS4_VERIFIER_SIZE); | |
1286 | ||
a084daf5 BF |
1287 | status = nfsd4_decode_opaque(argp, &exid->clname); |
1288 | if (status) | |
1289 | return nfserr_bad_xdr; | |
0733d213 AA |
1290 | |
1291 | READ_BUF(4); | |
06553991 | 1292 | exid->flags = be32_to_cpup(p++); |
0733d213 AA |
1293 | |
1294 | /* Ignore state_protect4_a */ | |
1295 | READ_BUF(4); | |
06553991 | 1296 | exid->spa_how = be32_to_cpup(p++); |
0733d213 AA |
1297 | switch (exid->spa_how) { |
1298 | case SP4_NONE: | |
1299 | break; | |
1300 | case SP4_MACH_CRED: | |
1301 | /* spo_must_enforce */ | |
ed941643 AE |
1302 | status = nfsd4_decode_bitmap(argp, |
1303 | exid->spo_must_enforce); | |
1304 | if (status) | |
1305 | goto out; | |
0733d213 | 1306 | /* spo_must_allow */ |
ed941643 AE |
1307 | status = nfsd4_decode_bitmap(argp, exid->spo_must_allow); |
1308 | if (status) | |
1309 | goto out; | |
0733d213 AA |
1310 | break; |
1311 | case SP4_SSV: | |
1312 | /* ssp_ops */ | |
1313 | READ_BUF(4); | |
06553991 | 1314 | dummy = be32_to_cpup(p++); |
0733d213 AA |
1315 | READ_BUF(dummy * 4); |
1316 | p += dummy; | |
1317 | ||
1318 | READ_BUF(4); | |
06553991 | 1319 | dummy = be32_to_cpup(p++); |
0733d213 AA |
1320 | READ_BUF(dummy * 4); |
1321 | p += dummy; | |
1322 | ||
1323 | /* ssp_hash_algs<> */ | |
1324 | READ_BUF(4); | |
06553991 | 1325 | tmp = be32_to_cpup(p++); |
5afa040b MJ |
1326 | while (tmp--) { |
1327 | READ_BUF(4); | |
06553991 | 1328 | dummy = be32_to_cpup(p++); |
5afa040b MJ |
1329 | READ_BUF(dummy); |
1330 | p += XDR_QUADLEN(dummy); | |
1331 | } | |
0733d213 AA |
1332 | |
1333 | /* ssp_encr_algs<> */ | |
1334 | READ_BUF(4); | |
06553991 | 1335 | tmp = be32_to_cpup(p++); |
5afa040b MJ |
1336 | while (tmp--) { |
1337 | READ_BUF(4); | |
06553991 | 1338 | dummy = be32_to_cpup(p++); |
5afa040b MJ |
1339 | READ_BUF(dummy); |
1340 | p += XDR_QUADLEN(dummy); | |
1341 | } | |
0733d213 AA |
1342 | |
1343 | /* ssp_window and ssp_num_gss_handles */ | |
1344 | READ_BUF(8); | |
06553991 BF |
1345 | dummy = be32_to_cpup(p++); |
1346 | dummy = be32_to_cpup(p++); | |
0733d213 AA |
1347 | break; |
1348 | default: | |
1349 | goto xdr_error; | |
1350 | } | |
1351 | ||
1352 | /* Ignore Implementation ID */ | |
1353 | READ_BUF(4); /* nfs_impl_id4 array length */ | |
06553991 | 1354 | dummy = be32_to_cpup(p++); |
0733d213 AA |
1355 | |
1356 | if (dummy > 1) | |
1357 | goto xdr_error; | |
1358 | ||
1359 | if (dummy == 1) { | |
1360 | /* nii_domain */ | |
1361 | READ_BUF(4); | |
06553991 | 1362 | dummy = be32_to_cpup(p++); |
0733d213 AA |
1363 | READ_BUF(dummy); |
1364 | p += XDR_QUADLEN(dummy); | |
1365 | ||
1366 | /* nii_name */ | |
1367 | READ_BUF(4); | |
06553991 | 1368 | dummy = be32_to_cpup(p++); |
0733d213 AA |
1369 | READ_BUF(dummy); |
1370 | p += XDR_QUADLEN(dummy); | |
1371 | ||
1372 | /* nii_date */ | |
1373 | READ_BUF(12); | |
1374 | p += 3; | |
1375 | } | |
1376 | DECODE_TAIL; | |
2db134eb AA |
1377 | } |
1378 | ||
1379 | static __be32 | |
1380 | nfsd4_decode_create_session(struct nfsd4_compoundargs *argp, | |
1381 | struct nfsd4_create_session *sess) | |
1382 | { | |
ec6b5d7b | 1383 | DECODE_HEAD; |
ec6b5d7b | 1384 | u32 dummy; |
ec6b5d7b AA |
1385 | |
1386 | READ_BUF(16); | |
1387 | COPYMEM(&sess->clientid, 8); | |
06553991 BF |
1388 | sess->seqid = be32_to_cpup(p++); |
1389 | sess->flags = be32_to_cpup(p++); | |
ec6b5d7b AA |
1390 | |
1391 | /* Fore channel attrs */ | |
1392 | READ_BUF(28); | |
06553991 BF |
1393 | dummy = be32_to_cpup(p++); /* headerpadsz is always 0 */ |
1394 | sess->fore_channel.maxreq_sz = be32_to_cpup(p++); | |
1395 | sess->fore_channel.maxresp_sz = be32_to_cpup(p++); | |
1396 | sess->fore_channel.maxresp_cached = be32_to_cpup(p++); | |
1397 | sess->fore_channel.maxops = be32_to_cpup(p++); | |
1398 | sess->fore_channel.maxreqs = be32_to_cpup(p++); | |
1399 | sess->fore_channel.nr_rdma_attrs = be32_to_cpup(p++); | |
ec6b5d7b AA |
1400 | if (sess->fore_channel.nr_rdma_attrs == 1) { |
1401 | READ_BUF(4); | |
06553991 | 1402 | sess->fore_channel.rdma_attrs = be32_to_cpup(p++); |
ec6b5d7b AA |
1403 | } else if (sess->fore_channel.nr_rdma_attrs > 1) { |
1404 | dprintk("Too many fore channel attr bitmaps!\n"); | |
1405 | goto xdr_error; | |
1406 | } | |
1407 | ||
1408 | /* Back channel attrs */ | |
1409 | READ_BUF(28); | |
06553991 BF |
1410 | dummy = be32_to_cpup(p++); /* headerpadsz is always 0 */ |
1411 | sess->back_channel.maxreq_sz = be32_to_cpup(p++); | |
1412 | sess->back_channel.maxresp_sz = be32_to_cpup(p++); | |
1413 | sess->back_channel.maxresp_cached = be32_to_cpup(p++); | |
1414 | sess->back_channel.maxops = be32_to_cpup(p++); | |
1415 | sess->back_channel.maxreqs = be32_to_cpup(p++); | |
1416 | sess->back_channel.nr_rdma_attrs = be32_to_cpup(p++); | |
ec6b5d7b AA |
1417 | if (sess->back_channel.nr_rdma_attrs == 1) { |
1418 | READ_BUF(4); | |
06553991 | 1419 | sess->back_channel.rdma_attrs = be32_to_cpup(p++); |
ec6b5d7b AA |
1420 | } else if (sess->back_channel.nr_rdma_attrs > 1) { |
1421 | dprintk("Too many back channel attr bitmaps!\n"); | |
1422 | goto xdr_error; | |
1423 | } | |
1424 | ||
acb2887e | 1425 | READ_BUF(4); |
06553991 | 1426 | sess->callback_prog = be32_to_cpup(p++); |
acb2887e | 1427 | nfsd4_decode_cb_sec(argp, &sess->cb_sec); |
ec6b5d7b | 1428 | DECODE_TAIL; |
2db134eb AA |
1429 | } |
1430 | ||
1431 | static __be32 | |
1432 | nfsd4_decode_destroy_session(struct nfsd4_compoundargs *argp, | |
1433 | struct nfsd4_destroy_session *destroy_session) | |
1434 | { | |
e10e0cfc BH |
1435 | DECODE_HEAD; |
1436 | READ_BUF(NFS4_MAX_SESSIONID_LEN); | |
1437 | COPYMEM(destroy_session->sessionid.data, NFS4_MAX_SESSIONID_LEN); | |
1438 | ||
1439 | DECODE_TAIL; | |
2db134eb AA |
1440 | } |
1441 | ||
e1ca12df BS |
1442 | static __be32 |
1443 | nfsd4_decode_free_stateid(struct nfsd4_compoundargs *argp, | |
1444 | struct nfsd4_free_stateid *free_stateid) | |
1445 | { | |
1446 | DECODE_HEAD; | |
1447 | ||
1448 | READ_BUF(sizeof(stateid_t)); | |
06553991 | 1449 | free_stateid->fr_stateid.si_generation = be32_to_cpup(p++); |
e1ca12df BS |
1450 | COPYMEM(&free_stateid->fr_stateid.si_opaque, sizeof(stateid_opaque_t)); |
1451 | ||
1452 | DECODE_TAIL; | |
1453 | } | |
1454 | ||
2db134eb AA |
1455 | static __be32 |
1456 | nfsd4_decode_sequence(struct nfsd4_compoundargs *argp, | |
1457 | struct nfsd4_sequence *seq) | |
1458 | { | |
b85d4c01 BH |
1459 | DECODE_HEAD; |
1460 | ||
1461 | READ_BUF(NFS4_MAX_SESSIONID_LEN + 16); | |
1462 | COPYMEM(seq->sessionid.data, NFS4_MAX_SESSIONID_LEN); | |
06553991 BF |
1463 | seq->seqid = be32_to_cpup(p++); |
1464 | seq->slotid = be32_to_cpup(p++); | |
1465 | seq->maxslots = be32_to_cpup(p++); | |
1466 | seq->cachethis = be32_to_cpup(p++); | |
b85d4c01 BH |
1467 | |
1468 | DECODE_TAIL; | |
2db134eb AA |
1469 | } |
1470 | ||
17456804 BS |
1471 | static __be32 |
1472 | nfsd4_decode_test_stateid(struct nfsd4_compoundargs *argp, struct nfsd4_test_stateid *test_stateid) | |
1473 | { | |
17456804 | 1474 | int i; |
03cfb420 BS |
1475 | __be32 *p, status; |
1476 | struct nfsd4_test_stateid_id *stateid; | |
17456804 BS |
1477 | |
1478 | READ_BUF(4); | |
1479 | test_stateid->ts_num_ids = ntohl(*p++); | |
1480 | ||
03cfb420 | 1481 | INIT_LIST_HEAD(&test_stateid->ts_stateid_list); |
17456804 BS |
1482 | |
1483 | for (i = 0; i < test_stateid->ts_num_ids; i++) { | |
d5e23383 | 1484 | stateid = svcxdr_tmpalloc(argp, sizeof(*stateid)); |
03cfb420 | 1485 | if (!stateid) { |
afcf6792 | 1486 | status = nfserrno(-ENOMEM); |
03cfb420 BS |
1487 | goto out; |
1488 | } | |
1489 | ||
03cfb420 BS |
1490 | INIT_LIST_HEAD(&stateid->ts_id_list); |
1491 | list_add_tail(&stateid->ts_id_list, &test_stateid->ts_stateid_list); | |
1492 | ||
1493 | status = nfsd4_decode_stateid(argp, &stateid->ts_id_stateid); | |
17456804 | 1494 | if (status) |
03cfb420 | 1495 | goto out; |
17456804 BS |
1496 | } |
1497 | ||
1498 | status = 0; | |
1499 | out: | |
1500 | return status; | |
1501 | xdr_error: | |
1502 | dprintk("NFSD: xdr error (%s:%d)\n", __FILE__, __LINE__); | |
1503 | status = nfserr_bad_xdr; | |
1504 | goto out; | |
1505 | } | |
1506 | ||
345c2842 MJ |
1507 | static __be32 nfsd4_decode_destroy_clientid(struct nfsd4_compoundargs *argp, struct nfsd4_destroy_clientid *dc) |
1508 | { | |
1509 | DECODE_HEAD; | |
1510 | ||
1511 | READ_BUF(8); | |
1512 | COPYMEM(&dc->clientid, 8); | |
1513 | ||
1514 | DECODE_TAIL; | |
1515 | } | |
1516 | ||
4dc6ec00 BF |
1517 | static __be32 nfsd4_decode_reclaim_complete(struct nfsd4_compoundargs *argp, struct nfsd4_reclaim_complete *rc) |
1518 | { | |
1519 | DECODE_HEAD; | |
1520 | ||
1521 | READ_BUF(4); | |
06553991 | 1522 | rc->rca_one_fs = be32_to_cpup(p++); |
4dc6ec00 BF |
1523 | |
1524 | DECODE_TAIL; | |
1525 | } | |
1526 | ||
9cf514cc CH |
1527 | #ifdef CONFIG_NFSD_PNFS |
1528 | static __be32 | |
1529 | nfsd4_decode_getdeviceinfo(struct nfsd4_compoundargs *argp, | |
1530 | struct nfsd4_getdeviceinfo *gdev) | |
1531 | { | |
1532 | DECODE_HEAD; | |
1533 | u32 num, i; | |
1534 | ||
1535 | READ_BUF(sizeof(struct nfsd4_deviceid) + 3 * 4); | |
1536 | COPYMEM(&gdev->gd_devid, sizeof(struct nfsd4_deviceid)); | |
1537 | gdev->gd_layout_type = be32_to_cpup(p++); | |
1538 | gdev->gd_maxcount = be32_to_cpup(p++); | |
1539 | num = be32_to_cpup(p++); | |
1540 | if (num) { | |
1541 | READ_BUF(4 * num); | |
1542 | gdev->gd_notify_types = be32_to_cpup(p++); | |
1543 | for (i = 1; i < num; i++) { | |
1544 | if (be32_to_cpup(p++)) { | |
1545 | status = nfserr_inval; | |
1546 | goto out; | |
1547 | } | |
1548 | } | |
1549 | } | |
1550 | DECODE_TAIL; | |
1551 | } | |
1552 | ||
1553 | static __be32 | |
1554 | nfsd4_decode_layoutget(struct nfsd4_compoundargs *argp, | |
1555 | struct nfsd4_layoutget *lgp) | |
1556 | { | |
1557 | DECODE_HEAD; | |
1558 | ||
1559 | READ_BUF(36); | |
1560 | lgp->lg_signal = be32_to_cpup(p++); | |
1561 | lgp->lg_layout_type = be32_to_cpup(p++); | |
1562 | lgp->lg_seg.iomode = be32_to_cpup(p++); | |
1563 | p = xdr_decode_hyper(p, &lgp->lg_seg.offset); | |
1564 | p = xdr_decode_hyper(p, &lgp->lg_seg.length); | |
1565 | p = xdr_decode_hyper(p, &lgp->lg_minlength); | |
db59c0ef KM |
1566 | |
1567 | status = nfsd4_decode_stateid(argp, &lgp->lg_sid); | |
1568 | if (status) | |
1569 | return status; | |
1570 | ||
9cf514cc CH |
1571 | READ_BUF(4); |
1572 | lgp->lg_maxcount = be32_to_cpup(p++); | |
1573 | ||
1574 | DECODE_TAIL; | |
1575 | } | |
1576 | ||
1577 | static __be32 | |
1578 | nfsd4_decode_layoutcommit(struct nfsd4_compoundargs *argp, | |
1579 | struct nfsd4_layoutcommit *lcp) | |
1580 | { | |
1581 | DECODE_HEAD; | |
1582 | u32 timechange; | |
1583 | ||
1584 | READ_BUF(20); | |
1585 | p = xdr_decode_hyper(p, &lcp->lc_seg.offset); | |
1586 | p = xdr_decode_hyper(p, &lcp->lc_seg.length); | |
1587 | lcp->lc_reclaim = be32_to_cpup(p++); | |
db59c0ef KM |
1588 | |
1589 | status = nfsd4_decode_stateid(argp, &lcp->lc_sid); | |
1590 | if (status) | |
1591 | return status; | |
1592 | ||
9cf514cc CH |
1593 | READ_BUF(4); |
1594 | lcp->lc_newoffset = be32_to_cpup(p++); | |
1595 | if (lcp->lc_newoffset) { | |
1596 | READ_BUF(8); | |
1597 | p = xdr_decode_hyper(p, &lcp->lc_last_wr); | |
1598 | } else | |
1599 | lcp->lc_last_wr = 0; | |
1600 | READ_BUF(4); | |
1601 | timechange = be32_to_cpup(p++); | |
1602 | if (timechange) { | |
1603 | status = nfsd4_decode_time(argp, &lcp->lc_mtime); | |
1604 | if (status) | |
1605 | return status; | |
1606 | } else { | |
1607 | lcp->lc_mtime.tv_nsec = UTIME_NOW; | |
1608 | } | |
1609 | READ_BUF(8); | |
1610 | lcp->lc_layout_type = be32_to_cpup(p++); | |
1611 | ||
1612 | /* | |
1613 | * Save the layout update in XDR format and let the layout driver deal | |
1614 | * with it later. | |
1615 | */ | |
1616 | lcp->lc_up_len = be32_to_cpup(p++); | |
1617 | if (lcp->lc_up_len > 0) { | |
1618 | READ_BUF(lcp->lc_up_len); | |
1619 | READMEM(lcp->lc_up_layout, lcp->lc_up_len); | |
1620 | } | |
1621 | ||
1622 | DECODE_TAIL; | |
1623 | } | |
1624 | ||
1625 | static __be32 | |
1626 | nfsd4_decode_layoutreturn(struct nfsd4_compoundargs *argp, | |
1627 | struct nfsd4_layoutreturn *lrp) | |
1628 | { | |
1629 | DECODE_HEAD; | |
1630 | ||
1631 | READ_BUF(16); | |
1632 | lrp->lr_reclaim = be32_to_cpup(p++); | |
1633 | lrp->lr_layout_type = be32_to_cpup(p++); | |
1634 | lrp->lr_seg.iomode = be32_to_cpup(p++); | |
1635 | lrp->lr_return_type = be32_to_cpup(p++); | |
1636 | if (lrp->lr_return_type == RETURN_FILE) { | |
1637 | READ_BUF(16); | |
1638 | p = xdr_decode_hyper(p, &lrp->lr_seg.offset); | |
1639 | p = xdr_decode_hyper(p, &lrp->lr_seg.length); | |
db59c0ef KM |
1640 | |
1641 | status = nfsd4_decode_stateid(argp, &lrp->lr_sid); | |
1642 | if (status) | |
1643 | return status; | |
1644 | ||
9cf514cc CH |
1645 | READ_BUF(4); |
1646 | lrp->lrf_body_len = be32_to_cpup(p++); | |
1647 | if (lrp->lrf_body_len > 0) { | |
1648 | READ_BUF(lrp->lrf_body_len); | |
1649 | READMEM(lrp->lrf_body, lrp->lrf_body_len); | |
1650 | } | |
1651 | } else { | |
1652 | lrp->lr_seg.offset = 0; | |
1653 | lrp->lr_seg.length = NFS4_MAX_UINT64; | |
1654 | } | |
1655 | ||
1656 | DECODE_TAIL; | |
1657 | } | |
1658 | #endif /* CONFIG_NFSD_PNFS */ | |
1659 | ||
95d871f0 AS |
1660 | static __be32 |
1661 | nfsd4_decode_fallocate(struct nfsd4_compoundargs *argp, | |
1662 | struct nfsd4_fallocate *fallocate) | |
1663 | { | |
1664 | DECODE_HEAD; | |
1665 | ||
1666 | status = nfsd4_decode_stateid(argp, &fallocate->falloc_stateid); | |
1667 | if (status) | |
1668 | return status; | |
1669 | ||
1670 | READ_BUF(16); | |
1671 | p = xdr_decode_hyper(p, &fallocate->falloc_offset); | |
1672 | xdr_decode_hyper(p, &fallocate->falloc_length); | |
1673 | ||
1674 | DECODE_TAIL; | |
1675 | } | |
1676 | ||
ffa0160a CH |
1677 | static __be32 |
1678 | nfsd4_decode_clone(struct nfsd4_compoundargs *argp, struct nfsd4_clone *clone) | |
1679 | { | |
1680 | DECODE_HEAD; | |
1681 | ||
1682 | status = nfsd4_decode_stateid(argp, &clone->cl_src_stateid); | |
1683 | if (status) | |
1684 | return status; | |
1685 | status = nfsd4_decode_stateid(argp, &clone->cl_dst_stateid); | |
1686 | if (status) | |
1687 | return status; | |
1688 | ||
1689 | READ_BUF(8 + 8 + 8); | |
1690 | p = xdr_decode_hyper(p, &clone->cl_src_pos); | |
1691 | p = xdr_decode_hyper(p, &clone->cl_dst_pos); | |
1692 | p = xdr_decode_hyper(p, &clone->cl_count); | |
1693 | DECODE_TAIL; | |
1694 | } | |
1695 | ||
24bab491 AS |
1696 | static __be32 |
1697 | nfsd4_decode_seek(struct nfsd4_compoundargs *argp, struct nfsd4_seek *seek) | |
1698 | { | |
1699 | DECODE_HEAD; | |
1700 | ||
1701 | status = nfsd4_decode_stateid(argp, &seek->seek_stateid); | |
1702 | if (status) | |
1703 | return status; | |
1704 | ||
1705 | READ_BUF(8 + 4); | |
1706 | p = xdr_decode_hyper(p, &seek->seek_offset); | |
1707 | seek->seek_whence = be32_to_cpup(p); | |
1708 | ||
1709 | DECODE_TAIL; | |
1710 | } | |
1711 | ||
347e0ad9 BH |
1712 | static __be32 |
1713 | nfsd4_decode_noop(struct nfsd4_compoundargs *argp, void *p) | |
1714 | { | |
1715 | return nfs_ok; | |
1716 | } | |
1717 | ||
3c375c6f BH |
1718 | static __be32 |
1719 | nfsd4_decode_notsupp(struct nfsd4_compoundargs *argp, void *p) | |
1720 | { | |
1e685ec2 | 1721 | return nfserr_notsupp; |
3c375c6f BH |
1722 | } |
1723 | ||
347e0ad9 BH |
1724 | typedef __be32(*nfsd4_dec)(struct nfsd4_compoundargs *argp, void *); |
1725 | ||
1726 | static nfsd4_dec nfsd4_dec_ops[] = { | |
ad1060c8 BF |
1727 | [OP_ACCESS] = (nfsd4_dec)nfsd4_decode_access, |
1728 | [OP_CLOSE] = (nfsd4_dec)nfsd4_decode_close, | |
1729 | [OP_COMMIT] = (nfsd4_dec)nfsd4_decode_commit, | |
1730 | [OP_CREATE] = (nfsd4_dec)nfsd4_decode_create, | |
1731 | [OP_DELEGPURGE] = (nfsd4_dec)nfsd4_decode_notsupp, | |
1732 | [OP_DELEGRETURN] = (nfsd4_dec)nfsd4_decode_delegreturn, | |
1733 | [OP_GETATTR] = (nfsd4_dec)nfsd4_decode_getattr, | |
1734 | [OP_GETFH] = (nfsd4_dec)nfsd4_decode_noop, | |
1735 | [OP_LINK] = (nfsd4_dec)nfsd4_decode_link, | |
1736 | [OP_LOCK] = (nfsd4_dec)nfsd4_decode_lock, | |
1737 | [OP_LOCKT] = (nfsd4_dec)nfsd4_decode_lockt, | |
1738 | [OP_LOCKU] = (nfsd4_dec)nfsd4_decode_locku, | |
1739 | [OP_LOOKUP] = (nfsd4_dec)nfsd4_decode_lookup, | |
1740 | [OP_LOOKUPP] = (nfsd4_dec)nfsd4_decode_noop, | |
1741 | [OP_NVERIFY] = (nfsd4_dec)nfsd4_decode_verify, | |
1742 | [OP_OPEN] = (nfsd4_dec)nfsd4_decode_open, | |
1743 | [OP_OPENATTR] = (nfsd4_dec)nfsd4_decode_notsupp, | |
1744 | [OP_OPEN_CONFIRM] = (nfsd4_dec)nfsd4_decode_open_confirm, | |
1745 | [OP_OPEN_DOWNGRADE] = (nfsd4_dec)nfsd4_decode_open_downgrade, | |
1746 | [OP_PUTFH] = (nfsd4_dec)nfsd4_decode_putfh, | |
e1a90ebd | 1747 | [OP_PUTPUBFH] = (nfsd4_dec)nfsd4_decode_putpubfh, |
ad1060c8 BF |
1748 | [OP_PUTROOTFH] = (nfsd4_dec)nfsd4_decode_noop, |
1749 | [OP_READ] = (nfsd4_dec)nfsd4_decode_read, | |
1750 | [OP_READDIR] = (nfsd4_dec)nfsd4_decode_readdir, | |
1751 | [OP_READLINK] = (nfsd4_dec)nfsd4_decode_noop, | |
1752 | [OP_REMOVE] = (nfsd4_dec)nfsd4_decode_remove, | |
1753 | [OP_RENAME] = (nfsd4_dec)nfsd4_decode_rename, | |
1754 | [OP_RENEW] = (nfsd4_dec)nfsd4_decode_renew, | |
1755 | [OP_RESTOREFH] = (nfsd4_dec)nfsd4_decode_noop, | |
1756 | [OP_SAVEFH] = (nfsd4_dec)nfsd4_decode_noop, | |
1757 | [OP_SECINFO] = (nfsd4_dec)nfsd4_decode_secinfo, | |
1758 | [OP_SETATTR] = (nfsd4_dec)nfsd4_decode_setattr, | |
1759 | [OP_SETCLIENTID] = (nfsd4_dec)nfsd4_decode_setclientid, | |
1760 | [OP_SETCLIENTID_CONFIRM] = (nfsd4_dec)nfsd4_decode_setclientid_confirm, | |
1761 | [OP_VERIFY] = (nfsd4_dec)nfsd4_decode_verify, | |
1762 | [OP_WRITE] = (nfsd4_dec)nfsd4_decode_write, | |
1763 | [OP_RELEASE_LOCKOWNER] = (nfsd4_dec)nfsd4_decode_release_lockowner, | |
2db134eb AA |
1764 | |
1765 | /* new operations for NFSv4.1 */ | |
cb73a9f4 | 1766 | [OP_BACKCHANNEL_CTL] = (nfsd4_dec)nfsd4_decode_backchannel_ctl, |
1d1bc8f2 | 1767 | [OP_BIND_CONN_TO_SESSION]= (nfsd4_dec)nfsd4_decode_bind_conn_to_session, |
9064caae RD |
1768 | [OP_EXCHANGE_ID] = (nfsd4_dec)nfsd4_decode_exchange_id, |
1769 | [OP_CREATE_SESSION] = (nfsd4_dec)nfsd4_decode_create_session, | |
1770 | [OP_DESTROY_SESSION] = (nfsd4_dec)nfsd4_decode_destroy_session, | |
e1ca12df | 1771 | [OP_FREE_STATEID] = (nfsd4_dec)nfsd4_decode_free_stateid, |
9064caae | 1772 | [OP_GET_DIR_DELEGATION] = (nfsd4_dec)nfsd4_decode_notsupp, |
9cf514cc CH |
1773 | #ifdef CONFIG_NFSD_PNFS |
1774 | [OP_GETDEVICEINFO] = (nfsd4_dec)nfsd4_decode_getdeviceinfo, | |
1775 | [OP_GETDEVICELIST] = (nfsd4_dec)nfsd4_decode_notsupp, | |
1776 | [OP_LAYOUTCOMMIT] = (nfsd4_dec)nfsd4_decode_layoutcommit, | |
1777 | [OP_LAYOUTGET] = (nfsd4_dec)nfsd4_decode_layoutget, | |
1778 | [OP_LAYOUTRETURN] = (nfsd4_dec)nfsd4_decode_layoutreturn, | |
1779 | #else | |
9064caae RD |
1780 | [OP_GETDEVICEINFO] = (nfsd4_dec)nfsd4_decode_notsupp, |
1781 | [OP_GETDEVICELIST] = (nfsd4_dec)nfsd4_decode_notsupp, | |
1782 | [OP_LAYOUTCOMMIT] = (nfsd4_dec)nfsd4_decode_notsupp, | |
1783 | [OP_LAYOUTGET] = (nfsd4_dec)nfsd4_decode_notsupp, | |
1784 | [OP_LAYOUTRETURN] = (nfsd4_dec)nfsd4_decode_notsupp, | |
9cf514cc | 1785 | #endif |
04f4ad16 | 1786 | [OP_SECINFO_NO_NAME] = (nfsd4_dec)nfsd4_decode_secinfo_no_name, |
9064caae RD |
1787 | [OP_SEQUENCE] = (nfsd4_dec)nfsd4_decode_sequence, |
1788 | [OP_SET_SSV] = (nfsd4_dec)nfsd4_decode_notsupp, | |
17456804 | 1789 | [OP_TEST_STATEID] = (nfsd4_dec)nfsd4_decode_test_stateid, |
9064caae | 1790 | [OP_WANT_DELEGATION] = (nfsd4_dec)nfsd4_decode_notsupp, |
345c2842 | 1791 | [OP_DESTROY_CLIENTID] = (nfsd4_dec)nfsd4_decode_destroy_clientid, |
4dc6ec00 | 1792 | [OP_RECLAIM_COMPLETE] = (nfsd4_dec)nfsd4_decode_reclaim_complete, |
87a15a80 AS |
1793 | |
1794 | /* new operations for NFSv4.2 */ | |
95d871f0 | 1795 | [OP_ALLOCATE] = (nfsd4_dec)nfsd4_decode_fallocate, |
87a15a80 AS |
1796 | [OP_COPY] = (nfsd4_dec)nfsd4_decode_notsupp, |
1797 | [OP_COPY_NOTIFY] = (nfsd4_dec)nfsd4_decode_notsupp, | |
b0cb9085 | 1798 | [OP_DEALLOCATE] = (nfsd4_dec)nfsd4_decode_fallocate, |
87a15a80 AS |
1799 | [OP_IO_ADVISE] = (nfsd4_dec)nfsd4_decode_notsupp, |
1800 | [OP_LAYOUTERROR] = (nfsd4_dec)nfsd4_decode_notsupp, | |
1801 | [OP_LAYOUTSTATS] = (nfsd4_dec)nfsd4_decode_notsupp, | |
1802 | [OP_OFFLOAD_CANCEL] = (nfsd4_dec)nfsd4_decode_notsupp, | |
1803 | [OP_OFFLOAD_STATUS] = (nfsd4_dec)nfsd4_decode_notsupp, | |
1804 | [OP_READ_PLUS] = (nfsd4_dec)nfsd4_decode_notsupp, | |
24bab491 | 1805 | [OP_SEEK] = (nfsd4_dec)nfsd4_decode_seek, |
87a15a80 | 1806 | [OP_WRITE_SAME] = (nfsd4_dec)nfsd4_decode_notsupp, |
ffa0160a | 1807 | [OP_CLONE] = (nfsd4_dec)nfsd4_decode_clone, |
2db134eb AA |
1808 | }; |
1809 | ||
e1a90ebd AS |
1810 | static inline bool |
1811 | nfsd4_opnum_in_range(struct nfsd4_compoundargs *argp, struct nfsd4_op *op) | |
1812 | { | |
8217d146 | 1813 | if (op->opnum < FIRST_NFS4_OP) |
e1a90ebd | 1814 | return false; |
8217d146 | 1815 | else if (argp->minorversion == 0 && op->opnum > LAST_NFS40_OP) |
e1a90ebd | 1816 | return false; |
8217d146 AS |
1817 | else if (argp->minorversion == 1 && op->opnum > LAST_NFS41_OP) |
1818 | return false; | |
1819 | else if (argp->minorversion == 2 && op->opnum > LAST_NFS42_OP) | |
e1a90ebd AS |
1820 | return false; |
1821 | return true; | |
1822 | } | |
f2feb96b | 1823 | |
b37ad28b | 1824 | static __be32 |
1da177e4 LT |
1825 | nfsd4_decode_compound(struct nfsd4_compoundargs *argp) |
1826 | { | |
1827 | DECODE_HEAD; | |
1828 | struct nfsd4_op *op; | |
1091006c | 1829 | bool cachethis = false; |
a5cddc88 BF |
1830 | int auth_slack= argp->rqstp->rq_auth_slack; |
1831 | int max_reply = auth_slack + 8; /* opcnt, status */ | |
b0e35fda BF |
1832 | int readcount = 0; |
1833 | int readbytes = 0; | |
1da177e4 LT |
1834 | int i; |
1835 | ||
1da177e4 | 1836 | READ_BUF(4); |
06553991 | 1837 | argp->taglen = be32_to_cpup(p++); |
4aed9c46 | 1838 | READ_BUF(argp->taglen); |
1da177e4 | 1839 | SAVEMEM(argp->tag, argp->taglen); |
4aed9c46 | 1840 | READ_BUF(8); |
06553991 BF |
1841 | argp->minorversion = be32_to_cpup(p++); |
1842 | argp->opcnt = be32_to_cpup(p++); | |
4f0cefbf | 1843 | max_reply += 4 + (XDR_QUADLEN(argp->taglen) << 2); |
1da177e4 LT |
1844 | |
1845 | if (argp->taglen > NFSD4_MAX_TAGLEN) | |
1846 | goto xdr_error; | |
1847 | if (argp->opcnt > 100) | |
1848 | goto xdr_error; | |
1849 | ||
e8c96f8c | 1850 | if (argp->opcnt > ARRAY_SIZE(argp->iops)) { |
5d6031ca | 1851 | argp->ops = kzalloc(argp->opcnt * sizeof(*argp->ops), GFP_KERNEL); |
1da177e4 LT |
1852 | if (!argp->ops) { |
1853 | argp->ops = argp->iops; | |
817cb9d4 | 1854 | dprintk("nfsd: couldn't allocate room for COMPOUND\n"); |
1da177e4 LT |
1855 | goto xdr_error; |
1856 | } | |
1857 | } | |
1858 | ||
e1a90ebd | 1859 | if (argp->minorversion > NFSD_SUPPORTED_MINOR_VERSION) |
30cff1ff BH |
1860 | argp->opcnt = 0; |
1861 | ||
1da177e4 LT |
1862 | for (i = 0; i < argp->opcnt; i++) { |
1863 | op = &argp->ops[i]; | |
1864 | op->replay = NULL; | |
1865 | ||
8a61b18c | 1866 | READ_BUF(4); |
06553991 | 1867 | op->opnum = be32_to_cpup(p++); |
1da177e4 | 1868 | |
e1a90ebd AS |
1869 | if (nfsd4_opnum_in_range(argp, op)) |
1870 | op->status = nfsd4_dec_ops[op->opnum](argp, &op->u); | |
347e0ad9 | 1871 | else { |
1da177e4 LT |
1872 | op->opnum = OP_ILLEGAL; |
1873 | op->status = nfserr_op_illegal; | |
1da177e4 | 1874 | } |
1091006c BF |
1875 | /* |
1876 | * We'll try to cache the result in the DRC if any one | |
1877 | * op in the compound wants to be cached: | |
1878 | */ | |
1879 | cachethis |= nfsd4_cache_this_op(op); | |
6ff40dec | 1880 | |
b0e35fda BF |
1881 | if (op->opnum == OP_READ) { |
1882 | readcount++; | |
1883 | readbytes += nfsd4_max_reply(argp->rqstp, op); | |
1884 | } else | |
1885 | max_reply += nfsd4_max_reply(argp->rqstp, op); | |
f7b43d0c BF |
1886 | /* |
1887 | * OP_LOCK may return a conflicting lock. (Special case | |
1888 | * because it will just skip encoding this if it runs | |
1889 | * out of xdr buffer space, and it is the only operation | |
1890 | * that behaves this way.) | |
1891 | */ | |
1892 | if (op->opnum == OP_LOCK) | |
1893 | max_reply += NFS4_OPAQUE_LIMIT; | |
e372ba60 BF |
1894 | |
1895 | if (op->status) { | |
1896 | argp->opcnt = i+1; | |
1897 | break; | |
1898 | } | |
1da177e4 | 1899 | } |
1091006c BF |
1900 | /* Sessions make the DRC unnecessary: */ |
1901 | if (argp->minorversion) | |
1902 | cachethis = false; | |
b0e35fda | 1903 | svc_reserve(argp->rqstp, max_reply + readbytes); |
1091006c | 1904 | argp->rqstp->rq_cachetype = cachethis ? RC_REPLBUFF : RC_NOCACHE; |
1da177e4 | 1905 | |
a5cddc88 | 1906 | if (readcount > 1 || max_reply > PAGE_SIZE - auth_slack) |
779fb0f3 | 1907 | clear_bit(RQ_SPLICE_OK, &argp->rqstp->rq_flags); |
b0e35fda | 1908 | |
1da177e4 LT |
1909 | DECODE_TAIL; |
1910 | } | |
1da177e4 | 1911 | |
d05d5744 | 1912 | static __be32 *encode_change(__be32 *p, struct kstat *stat, struct inode *inode) |
c654b8a9 BF |
1913 | { |
1914 | if (IS_I_VERSION(inode)) { | |
d05d5744 | 1915 | p = xdr_encode_hyper(p, inode->i_version); |
c654b8a9 | 1916 | } else { |
d05d5744 BF |
1917 | *p++ = cpu_to_be32(stat->ctime.tv_sec); |
1918 | *p++ = cpu_to_be32(stat->ctime.tv_nsec); | |
c654b8a9 | 1919 | } |
d05d5744 | 1920 | return p; |
c654b8a9 BF |
1921 | } |
1922 | ||
d05d5744 | 1923 | static __be32 *encode_cinfo(__be32 *p, struct nfsd4_change_info *c) |
c654b8a9 | 1924 | { |
d05d5744 | 1925 | *p++ = cpu_to_be32(c->atomic); |
c654b8a9 | 1926 | if (c->change_supported) { |
d05d5744 BF |
1927 | p = xdr_encode_hyper(p, c->before_change); |
1928 | p = xdr_encode_hyper(p, c->after_change); | |
c654b8a9 | 1929 | } else { |
d05d5744 BF |
1930 | *p++ = cpu_to_be32(c->before_ctime_sec); |
1931 | *p++ = cpu_to_be32(c->before_ctime_nsec); | |
1932 | *p++ = cpu_to_be32(c->after_ctime_sec); | |
1933 | *p++ = cpu_to_be32(c->after_ctime_nsec); | |
c654b8a9 | 1934 | } |
d05d5744 | 1935 | return p; |
c654b8a9 | 1936 | } |
1da177e4 | 1937 | |
81c3f413 | 1938 | /* Encode as an array of strings the string given with components |
e7a0444a | 1939 | * separated @sep, escaped with esc_enter and esc_exit. |
81c3f413 | 1940 | */ |
ddd1ea56 BF |
1941 | static __be32 nfsd4_encode_components_esc(struct xdr_stream *xdr, char sep, |
1942 | char *components, char esc_enter, | |
1943 | char esc_exit) | |
81c3f413 | 1944 | { |
ddd1ea56 | 1945 | __be32 *p; |
082d4bd7 BF |
1946 | __be32 pathlen; |
1947 | int pathlen_offset; | |
81c3f413 | 1948 | int strlen, count=0; |
e7a0444a | 1949 | char *str, *end, *next; |
81c3f413 BF |
1950 | |
1951 | dprintk("nfsd4_encode_components(%s)\n", components); | |
082d4bd7 BF |
1952 | |
1953 | pathlen_offset = xdr->buf->len; | |
ddd1ea56 BF |
1954 | p = xdr_reserve_space(xdr, 4); |
1955 | if (!p) | |
81c3f413 | 1956 | return nfserr_resource; |
082d4bd7 BF |
1957 | p++; /* We will fill this in with @count later */ |
1958 | ||
81c3f413 BF |
1959 | end = str = components; |
1960 | while (*end) { | |
e7a0444a WAA |
1961 | bool found_esc = false; |
1962 | ||
1963 | /* try to parse as esc_start, ..., esc_end, sep */ | |
1964 | if (*str == esc_enter) { | |
1965 | for (; *end && (*end != esc_exit); end++) | |
1966 | /* find esc_exit or end of string */; | |
1967 | next = end + 1; | |
1968 | if (*end && (!*next || *next == sep)) { | |
1969 | str++; | |
1970 | found_esc = true; | |
1971 | } | |
1972 | } | |
1973 | ||
1974 | if (!found_esc) | |
1975 | for (; *end && (*end != sep); end++) | |
1976 | /* find sep or end of string */; | |
1977 | ||
81c3f413 BF |
1978 | strlen = end - str; |
1979 | if (strlen) { | |
ddd1ea56 BF |
1980 | p = xdr_reserve_space(xdr, strlen + 4); |
1981 | if (!p) | |
81c3f413 | 1982 | return nfserr_resource; |
0c0c267b | 1983 | p = xdr_encode_opaque(p, str, strlen); |
81c3f413 BF |
1984 | count++; |
1985 | } | |
1986 | else | |
1987 | end++; | |
5a64e569 BC |
1988 | if (found_esc) |
1989 | end = next; | |
1990 | ||
81c3f413 BF |
1991 | str = end; |
1992 | } | |
bf7491f1 | 1993 | pathlen = htonl(count); |
082d4bd7 | 1994 | write_bytes_to_xdr_buf(xdr->buf, pathlen_offset, &pathlen, 4); |
81c3f413 BF |
1995 | return 0; |
1996 | } | |
1997 | ||
e7a0444a WAA |
1998 | /* Encode as an array of strings the string given with components |
1999 | * separated @sep. | |
2000 | */ | |
ddd1ea56 BF |
2001 | static __be32 nfsd4_encode_components(struct xdr_stream *xdr, char sep, |
2002 | char *components) | |
e7a0444a | 2003 | { |
ddd1ea56 | 2004 | return nfsd4_encode_components_esc(xdr, sep, components, 0, 0); |
e7a0444a WAA |
2005 | } |
2006 | ||
81c3f413 BF |
2007 | /* |
2008 | * encode a location element of a fs_locations structure | |
2009 | */ | |
ddd1ea56 BF |
2010 | static __be32 nfsd4_encode_fs_location4(struct xdr_stream *xdr, |
2011 | struct nfsd4_fs_location *location) | |
81c3f413 | 2012 | { |
b37ad28b | 2013 | __be32 status; |
81c3f413 | 2014 | |
ddd1ea56 | 2015 | status = nfsd4_encode_components_esc(xdr, ':', location->hosts, |
e7a0444a | 2016 | '[', ']'); |
81c3f413 BF |
2017 | if (status) |
2018 | return status; | |
ddd1ea56 | 2019 | status = nfsd4_encode_components(xdr, '/', location->path); |
81c3f413 BF |
2020 | if (status) |
2021 | return status; | |
81c3f413 BF |
2022 | return 0; |
2023 | } | |
2024 | ||
2025 | /* | |
ed748aac | 2026 | * Encode a path in RFC3530 'pathname4' format |
81c3f413 | 2027 | */ |
ddd1ea56 BF |
2028 | static __be32 nfsd4_encode_path(struct xdr_stream *xdr, |
2029 | const struct path *root, | |
2030 | const struct path *path) | |
81c3f413 | 2031 | { |
301f0268 | 2032 | struct path cur = *path; |
ddd1ea56 | 2033 | __be32 *p; |
ed748aac TM |
2034 | struct dentry **components = NULL; |
2035 | unsigned int ncomponents = 0; | |
2036 | __be32 err = nfserr_jukebox; | |
81c3f413 | 2037 | |
ed748aac | 2038 | dprintk("nfsd4_encode_components("); |
81c3f413 | 2039 | |
ed748aac TM |
2040 | path_get(&cur); |
2041 | /* First walk the path up to the nfsd root, and store the | |
2042 | * dentries/path components in an array. | |
2043 | */ | |
2044 | for (;;) { | |
b77a4b2e | 2045 | if (path_equal(&cur, root)) |
ed748aac TM |
2046 | break; |
2047 | if (cur.dentry == cur.mnt->mnt_root) { | |
2048 | if (follow_up(&cur)) | |
2049 | continue; | |
2050 | goto out_free; | |
2051 | } | |
2052 | if ((ncomponents & 15) == 0) { | |
2053 | struct dentry **new; | |
2054 | new = krealloc(components, | |
2055 | sizeof(*new) * (ncomponents + 16), | |
2056 | GFP_KERNEL); | |
2057 | if (!new) | |
2058 | goto out_free; | |
2059 | components = new; | |
2060 | } | |
2061 | components[ncomponents++] = cur.dentry; | |
2062 | cur.dentry = dget_parent(cur.dentry); | |
2063 | } | |
ddd1ea56 BF |
2064 | err = nfserr_resource; |
2065 | p = xdr_reserve_space(xdr, 4); | |
2066 | if (!p) | |
ed748aac | 2067 | goto out_free; |
c373b0a4 | 2068 | *p++ = cpu_to_be32(ncomponents); |
ed748aac TM |
2069 | |
2070 | while (ncomponents) { | |
2071 | struct dentry *dentry = components[ncomponents - 1]; | |
301f0268 | 2072 | unsigned int len; |
ed748aac | 2073 | |
301f0268 AV |
2074 | spin_lock(&dentry->d_lock); |
2075 | len = dentry->d_name.len; | |
ddd1ea56 BF |
2076 | p = xdr_reserve_space(xdr, len + 4); |
2077 | if (!p) { | |
301f0268 | 2078 | spin_unlock(&dentry->d_lock); |
ed748aac | 2079 | goto out_free; |
301f0268 | 2080 | } |
0c0c267b | 2081 | p = xdr_encode_opaque(p, dentry->d_name.name, len); |
a455589f | 2082 | dprintk("/%pd", dentry); |
301f0268 | 2083 | spin_unlock(&dentry->d_lock); |
ed748aac TM |
2084 | dput(dentry); |
2085 | ncomponents--; | |
81c3f413 | 2086 | } |
ed748aac | 2087 | |
ed748aac TM |
2088 | err = 0; |
2089 | out_free: | |
2090 | dprintk(")\n"); | |
2091 | while (ncomponents) | |
2092 | dput(components[--ncomponents]); | |
2093 | kfree(components); | |
2094 | path_put(&cur); | |
2095 | return err; | |
2096 | } | |
2097 | ||
ddd1ea56 BF |
2098 | static __be32 nfsd4_encode_fsloc_fsroot(struct xdr_stream *xdr, |
2099 | struct svc_rqst *rqstp, const struct path *path) | |
ed748aac TM |
2100 | { |
2101 | struct svc_export *exp_ps; | |
2102 | __be32 res; | |
2103 | ||
2104 | exp_ps = rqst_find_fsidzero_export(rqstp); | |
2105 | if (IS_ERR(exp_ps)) | |
2106 | return nfserrno(PTR_ERR(exp_ps)); | |
ddd1ea56 | 2107 | res = nfsd4_encode_path(xdr, &exp_ps->ex_path, path); |
ed748aac TM |
2108 | exp_put(exp_ps); |
2109 | return res; | |
81c3f413 BF |
2110 | } |
2111 | ||
2112 | /* | |
2113 | * encode a fs_locations structure | |
2114 | */ | |
ddd1ea56 BF |
2115 | static __be32 nfsd4_encode_fs_locations(struct xdr_stream *xdr, |
2116 | struct svc_rqst *rqstp, struct svc_export *exp) | |
81c3f413 | 2117 | { |
b37ad28b | 2118 | __be32 status; |
cc45f017 | 2119 | int i; |
ddd1ea56 | 2120 | __be32 *p; |
81c3f413 | 2121 | struct nfsd4_fs_locations *fslocs = &exp->ex_fslocs; |
81c3f413 | 2122 | |
ddd1ea56 | 2123 | status = nfsd4_encode_fsloc_fsroot(xdr, rqstp, &exp->ex_path); |
81c3f413 BF |
2124 | if (status) |
2125 | return status; | |
ddd1ea56 BF |
2126 | p = xdr_reserve_space(xdr, 4); |
2127 | if (!p) | |
81c3f413 | 2128 | return nfserr_resource; |
c373b0a4 | 2129 | *p++ = cpu_to_be32(fslocs->locations_count); |
81c3f413 | 2130 | for (i=0; i<fslocs->locations_count; i++) { |
ddd1ea56 | 2131 | status = nfsd4_encode_fs_location4(xdr, &fslocs->locations[i]); |
81c3f413 BF |
2132 | if (status) |
2133 | return status; | |
2134 | } | |
81c3f413 BF |
2135 | return 0; |
2136 | } | |
1da177e4 | 2137 | |
3d2544b1 BF |
2138 | static u32 nfs4_file_type(umode_t mode) |
2139 | { | |
2140 | switch (mode & S_IFMT) { | |
2141 | case S_IFIFO: return NF4FIFO; | |
2142 | case S_IFCHR: return NF4CHR; | |
2143 | case S_IFDIR: return NF4DIR; | |
2144 | case S_IFBLK: return NF4BLK; | |
2145 | case S_IFLNK: return NF4LNK; | |
2146 | case S_IFREG: return NF4REG; | |
2147 | case S_IFSOCK: return NF4SOCK; | |
2148 | default: return NF4BAD; | |
2149 | }; | |
2150 | } | |
1da177e4 | 2151 | |
b37ad28b | 2152 | static inline __be32 |
ddd1ea56 BF |
2153 | nfsd4_encode_aclname(struct xdr_stream *xdr, struct svc_rqst *rqstp, |
2154 | struct nfs4_ace *ace) | |
1da177e4 | 2155 | { |
3554116d | 2156 | if (ace->whotype != NFS4_ACL_WHO_NAMED) |
ddd1ea56 | 2157 | return nfs4_acl_write_who(xdr, ace->whotype); |
3554116d | 2158 | else if (ace->flag & NFS4_ACE_IDENTIFIER_GROUP) |
ddd1ea56 | 2159 | return nfsd4_encode_group(xdr, rqstp, ace->who_gid); |
3554116d | 2160 | else |
ddd1ea56 | 2161 | return nfsd4_encode_user(xdr, rqstp, ace->who_uid); |
1da177e4 LT |
2162 | } |
2163 | ||
6896f15a | 2164 | static inline __be32 |
8a4c3926 | 2165 | nfsd4_encode_layout_types(struct xdr_stream *xdr, u32 layout_types) |
6896f15a | 2166 | { |
8a4c3926 JL |
2167 | __be32 *p; |
2168 | unsigned long i = hweight_long(layout_types); | |
6896f15a | 2169 | |
8a4c3926 JL |
2170 | p = xdr_reserve_space(xdr, 4 + 4 * i); |
2171 | if (!p) | |
2172 | return nfserr_resource; | |
2173 | ||
2174 | *p++ = cpu_to_be32(i); | |
2175 | ||
2176 | for (i = LAYOUT_NFSV4_1_FILES; i < LAYOUT_TYPE_MAX; ++i) | |
2177 | if (layout_types & (1 << i)) | |
2178 | *p++ = cpu_to_be32(i); | |
6896f15a KM |
2179 | |
2180 | return 0; | |
2181 | } | |
2182 | ||
42ca0993 BF |
2183 | #define WORD0_ABSENT_FS_ATTRS (FATTR4_WORD0_FS_LOCATIONS | FATTR4_WORD0_FSID | \ |
2184 | FATTR4_WORD0_RDATTR_ERROR) | |
2185 | #define WORD1_ABSENT_FS_ATTRS FATTR4_WORD1_MOUNTED_ON_FILEID | |
c2227a39 | 2186 | #define WORD2_ABSENT_FS_ATTRS 0 |
42ca0993 | 2187 | |
18032ca0 DQ |
2188 | #ifdef CONFIG_NFSD_V4_SECURITY_LABEL |
2189 | static inline __be32 | |
ddd1ea56 BF |
2190 | nfsd4_encode_security_label(struct xdr_stream *xdr, struct svc_rqst *rqstp, |
2191 | void *context, int len) | |
18032ca0 | 2192 | { |
ddd1ea56 | 2193 | __be32 *p; |
18032ca0 | 2194 | |
ddd1ea56 BF |
2195 | p = xdr_reserve_space(xdr, len + 4 + 4 + 4); |
2196 | if (!p) | |
18032ca0 DQ |
2197 | return nfserr_resource; |
2198 | ||
2199 | /* | |
2200 | * For now we use a 0 here to indicate the null translation; in | |
2201 | * the future we may place a call to translation code here. | |
2202 | */ | |
c373b0a4 BF |
2203 | *p++ = cpu_to_be32(0); /* lfs */ |
2204 | *p++ = cpu_to_be32(0); /* pi */ | |
18032ca0 | 2205 | p = xdr_encode_opaque(p, context, len); |
18032ca0 DQ |
2206 | return 0; |
2207 | } | |
2208 | #else | |
2209 | static inline __be32 | |
ddd1ea56 BF |
2210 | nfsd4_encode_security_label(struct xdr_stream *xdr, struct svc_rqst *rqstp, |
2211 | void *context, int len) | |
18032ca0 DQ |
2212 | { return 0; } |
2213 | #endif | |
2214 | ||
c2227a39 | 2215 | static __be32 fattr_handle_absent_fs(u32 *bmval0, u32 *bmval1, u32 *bmval2, u32 *rdattr_err) |
42ca0993 BF |
2216 | { |
2217 | /* As per referral draft: */ | |
2218 | if (*bmval0 & ~WORD0_ABSENT_FS_ATTRS || | |
2219 | *bmval1 & ~WORD1_ABSENT_FS_ATTRS) { | |
2220 | if (*bmval0 & FATTR4_WORD0_RDATTR_ERROR || | |
2221 | *bmval0 & FATTR4_WORD0_FS_LOCATIONS) | |
2222 | *rdattr_err = NFSERR_MOVED; | |
2223 | else | |
2224 | return nfserr_moved; | |
2225 | } | |
2226 | *bmval0 &= WORD0_ABSENT_FS_ATTRS; | |
2227 | *bmval1 &= WORD1_ABSENT_FS_ATTRS; | |
c2227a39 | 2228 | *bmval2 &= WORD2_ABSENT_FS_ATTRS; |
42ca0993 BF |
2229 | return 0; |
2230 | } | |
1da177e4 | 2231 | |
ae7095a7 BF |
2232 | |
2233 | static int get_parent_attributes(struct svc_export *exp, struct kstat *stat) | |
2234 | { | |
2235 | struct path path = exp->ex_path; | |
2236 | int err; | |
2237 | ||
2238 | path_get(&path); | |
2239 | while (follow_up(&path)) { | |
2240 | if (path.dentry != path.mnt->mnt_root) | |
2241 | break; | |
2242 | } | |
3dadecce | 2243 | err = vfs_getattr(&path, stat); |
ae7095a7 BF |
2244 | path_put(&path); |
2245 | return err; | |
2246 | } | |
2247 | ||
75976de6 KM |
2248 | static __be32 |
2249 | nfsd4_encode_bitmap(struct xdr_stream *xdr, u32 bmval0, u32 bmval1, u32 bmval2) | |
2250 | { | |
2251 | __be32 *p; | |
2252 | ||
2253 | if (bmval2) { | |
2254 | p = xdr_reserve_space(xdr, 16); | |
2255 | if (!p) | |
2256 | goto out_resource; | |
2257 | *p++ = cpu_to_be32(3); | |
2258 | *p++ = cpu_to_be32(bmval0); | |
2259 | *p++ = cpu_to_be32(bmval1); | |
2260 | *p++ = cpu_to_be32(bmval2); | |
2261 | } else if (bmval1) { | |
2262 | p = xdr_reserve_space(xdr, 12); | |
2263 | if (!p) | |
2264 | goto out_resource; | |
2265 | *p++ = cpu_to_be32(2); | |
2266 | *p++ = cpu_to_be32(bmval0); | |
2267 | *p++ = cpu_to_be32(bmval1); | |
2268 | } else { | |
2269 | p = xdr_reserve_space(xdr, 8); | |
2270 | if (!p) | |
2271 | goto out_resource; | |
2272 | *p++ = cpu_to_be32(1); | |
2273 | *p++ = cpu_to_be32(bmval0); | |
2274 | } | |
2275 | ||
2276 | return 0; | |
2277 | out_resource: | |
2278 | return nfserr_resource; | |
2279 | } | |
2280 | ||
1da177e4 LT |
2281 | /* |
2282 | * Note: @fhp can be NULL; in this case, we might have to compose the filehandle | |
2283 | * ourselves. | |
1da177e4 | 2284 | */ |
da2ebce6 | 2285 | static __be32 |
d5184658 BF |
2286 | nfsd4_encode_fattr(struct xdr_stream *xdr, struct svc_fh *fhp, |
2287 | struct svc_export *exp, | |
2288 | struct dentry *dentry, u32 *bmval, | |
406a7ea9 | 2289 | struct svc_rqst *rqstp, int ignore_crossmnt) |
1da177e4 LT |
2290 | { |
2291 | u32 bmval0 = bmval[0]; | |
2292 | u32 bmval1 = bmval[1]; | |
7e705706 | 2293 | u32 bmval2 = bmval[2]; |
1da177e4 | 2294 | struct kstat stat; |
d50e6136 | 2295 | struct svc_fh *tempfh = NULL; |
1da177e4 | 2296 | struct kstatfs statfs; |
ddd1ea56 | 2297 | __be32 *p; |
1fcea5b2 | 2298 | int starting_len = xdr->buf->len; |
082d4bd7 BF |
2299 | int attrlen_offset; |
2300 | __be32 attrlen; | |
1da177e4 LT |
2301 | u32 dummy; |
2302 | u64 dummy64; | |
42ca0993 | 2303 | u32 rdattr_err = 0; |
b37ad28b | 2304 | __be32 status; |
b8dd7b9a | 2305 | int err; |
1da177e4 | 2306 | struct nfs4_acl *acl = NULL; |
18032ca0 DQ |
2307 | void *context = NULL; |
2308 | int contextlen; | |
2309 | bool contextsupport = false; | |
7e705706 AA |
2310 | struct nfsd4_compoundres *resp = rqstp->rq_resp; |
2311 | u32 minorversion = resp->cstate.minorversion; | |
ebabe9a9 CH |
2312 | struct path path = { |
2313 | .mnt = exp->ex_path.mnt, | |
2314 | .dentry = dentry, | |
2315 | }; | |
3d733711 | 2316 | struct nfsd_net *nn = net_generic(SVC_NET(rqstp), nfsd_net_id); |
1da177e4 LT |
2317 | |
2318 | BUG_ON(bmval1 & NFSD_WRITEONLY_ATTRS_WORD1); | |
7e705706 AA |
2319 | BUG_ON(bmval0 & ~nfsd_suppattrs0(minorversion)); |
2320 | BUG_ON(bmval1 & ~nfsd_suppattrs1(minorversion)); | |
2321 | BUG_ON(bmval2 & ~nfsd_suppattrs2(minorversion)); | |
1da177e4 | 2322 | |
42ca0993 | 2323 | if (exp->ex_fslocs.migrated) { |
c2227a39 | 2324 | status = fattr_handle_absent_fs(&bmval0, &bmval1, &bmval2, &rdattr_err); |
42ca0993 BF |
2325 | if (status) |
2326 | goto out; | |
2327 | } | |
2328 | ||
3dadecce | 2329 | err = vfs_getattr(&path, &stat); |
b8dd7b9a | 2330 | if (err) |
1da177e4 | 2331 | goto out_nfserr; |
12337901 CH |
2332 | if ((bmval0 & (FATTR4_WORD0_FILES_AVAIL | FATTR4_WORD0_FILES_FREE | |
2333 | FATTR4_WORD0_FILES_TOTAL | FATTR4_WORD0_MAXNAME)) || | |
1da177e4 LT |
2334 | (bmval1 & (FATTR4_WORD1_SPACE_AVAIL | FATTR4_WORD1_SPACE_FREE | |
2335 | FATTR4_WORD1_SPACE_TOTAL))) { | |
ebabe9a9 | 2336 | err = vfs_statfs(&path, &statfs); |
b8dd7b9a | 2337 | if (err) |
1da177e4 LT |
2338 | goto out_nfserr; |
2339 | } | |
2340 | if ((bmval0 & (FATTR4_WORD0_FILEHANDLE | FATTR4_WORD0_FSID)) && !fhp) { | |
d50e6136 BF |
2341 | tempfh = kmalloc(sizeof(struct svc_fh), GFP_KERNEL); |
2342 | status = nfserr_jukebox; | |
2343 | if (!tempfh) | |
2344 | goto out; | |
2345 | fh_init(tempfh, NFS4_FHSIZE); | |
2346 | status = fh_compose(tempfh, exp, dentry, NULL); | |
1da177e4 LT |
2347 | if (status) |
2348 | goto out; | |
d50e6136 | 2349 | fhp = tempfh; |
1da177e4 | 2350 | } |
0c9d65e7 | 2351 | if (bmval0 & FATTR4_WORD0_ACL) { |
b8dd7b9a | 2352 | err = nfsd4_get_nfs4_acl(rqstp, dentry, &acl); |
0c9d65e7 AG |
2353 | if (err == -EOPNOTSUPP) |
2354 | bmval0 &= ~FATTR4_WORD0_ACL; | |
2355 | else if (err == -EINVAL) { | |
2356 | status = nfserr_attrnotsupp; | |
2357 | goto out; | |
2358 | } else if (err != 0) | |
2359 | goto out_nfserr; | |
1da177e4 | 2360 | } |
1da177e4 | 2361 | |
18032ca0 | 2362 | #ifdef CONFIG_NFSD_V4_SECURITY_LABEL |
c2227a39 KM |
2363 | if ((bmval2 & FATTR4_WORD2_SECURITY_LABEL) || |
2364 | bmval0 & FATTR4_WORD0_SUPPORTED_ATTRS) { | |
2b0143b5 | 2365 | err = security_inode_getsecctx(d_inode(dentry), |
18032ca0 DQ |
2366 | &context, &contextlen); |
2367 | contextsupport = (err == 0); | |
2368 | if (bmval2 & FATTR4_WORD2_SECURITY_LABEL) { | |
2369 | if (err == -EOPNOTSUPP) | |
2370 | bmval2 &= ~FATTR4_WORD2_SECURITY_LABEL; | |
2371 | else if (err) | |
2372 | goto out_nfserr; | |
2373 | } | |
2374 | } | |
2375 | #endif /* CONFIG_NFSD_V4_SECURITY_LABEL */ | |
2376 | ||
75976de6 KM |
2377 | status = nfsd4_encode_bitmap(xdr, bmval0, bmval1, bmval2); |
2378 | if (status) | |
2379 | goto out; | |
082d4bd7 BF |
2380 | |
2381 | attrlen_offset = xdr->buf->len; | |
ddd1ea56 BF |
2382 | p = xdr_reserve_space(xdr, 4); |
2383 | if (!p) | |
2384 | goto out_resource; | |
082d4bd7 | 2385 | p++; /* to be backfilled later */ |
1da177e4 LT |
2386 | |
2387 | if (bmval0 & FATTR4_WORD0_SUPPORTED_ATTRS) { | |
7e705706 AA |
2388 | u32 word0 = nfsd_suppattrs0(minorversion); |
2389 | u32 word1 = nfsd_suppattrs1(minorversion); | |
2390 | u32 word2 = nfsd_suppattrs2(minorversion); | |
2391 | ||
0c9d65e7 | 2392 | if (!IS_POSIXACL(dentry->d_inode)) |
42ca0993 | 2393 | word0 &= ~FATTR4_WORD0_ACL; |
18032ca0 DQ |
2394 | if (!contextsupport) |
2395 | word2 &= ~FATTR4_WORD2_SECURITY_LABEL; | |
7e705706 | 2396 | if (!word2) { |
ddd1ea56 BF |
2397 | p = xdr_reserve_space(xdr, 12); |
2398 | if (!p) | |
2b44f1ba | 2399 | goto out_resource; |
c373b0a4 BF |
2400 | *p++ = cpu_to_be32(2); |
2401 | *p++ = cpu_to_be32(word0); | |
2402 | *p++ = cpu_to_be32(word1); | |
7e705706 | 2403 | } else { |
ddd1ea56 BF |
2404 | p = xdr_reserve_space(xdr, 16); |
2405 | if (!p) | |
2b44f1ba | 2406 | goto out_resource; |
c373b0a4 BF |
2407 | *p++ = cpu_to_be32(3); |
2408 | *p++ = cpu_to_be32(word0); | |
2409 | *p++ = cpu_to_be32(word1); | |
2410 | *p++ = cpu_to_be32(word2); | |
7e705706 | 2411 | } |
1da177e4 LT |
2412 | } |
2413 | if (bmval0 & FATTR4_WORD0_TYPE) { | |
ddd1ea56 BF |
2414 | p = xdr_reserve_space(xdr, 4); |
2415 | if (!p) | |
1da177e4 | 2416 | goto out_resource; |
3d2544b1 | 2417 | dummy = nfs4_file_type(stat.mode); |
6b6d8137 BF |
2418 | if (dummy == NF4BAD) { |
2419 | status = nfserr_serverfault; | |
2420 | goto out; | |
2421 | } | |
c373b0a4 | 2422 | *p++ = cpu_to_be32(dummy); |
1da177e4 LT |
2423 | } |
2424 | if (bmval0 & FATTR4_WORD0_FH_EXPIRE_TYPE) { | |
ddd1ea56 BF |
2425 | p = xdr_reserve_space(xdr, 4); |
2426 | if (!p) | |
1da177e4 | 2427 | goto out_resource; |
49640001 | 2428 | if (exp->ex_flags & NFSEXP_NOSUBTREECHECK) |
c373b0a4 | 2429 | *p++ = cpu_to_be32(NFS4_FH_PERSISTENT); |
49640001 | 2430 | else |
c373b0a4 BF |
2431 | *p++ = cpu_to_be32(NFS4_FH_PERSISTENT| |
2432 | NFS4_FH_VOL_RENAME); | |
1da177e4 LT |
2433 | } |
2434 | if (bmval0 & FATTR4_WORD0_CHANGE) { | |
ddd1ea56 BF |
2435 | p = xdr_reserve_space(xdr, 8); |
2436 | if (!p) | |
1da177e4 | 2437 | goto out_resource; |
2b0143b5 | 2438 | p = encode_change(p, &stat, d_inode(dentry)); |
1da177e4 LT |
2439 | } |
2440 | if (bmval0 & FATTR4_WORD0_SIZE) { | |
ddd1ea56 BF |
2441 | p = xdr_reserve_space(xdr, 8); |
2442 | if (!p) | |
1da177e4 | 2443 | goto out_resource; |
b64c7f3b | 2444 | p = xdr_encode_hyper(p, stat.size); |
1da177e4 LT |
2445 | } |
2446 | if (bmval0 & FATTR4_WORD0_LINK_SUPPORT) { | |
ddd1ea56 BF |
2447 | p = xdr_reserve_space(xdr, 4); |
2448 | if (!p) | |
1da177e4 | 2449 | goto out_resource; |
c373b0a4 | 2450 | *p++ = cpu_to_be32(1); |
1da177e4 LT |
2451 | } |
2452 | if (bmval0 & FATTR4_WORD0_SYMLINK_SUPPORT) { | |
ddd1ea56 BF |
2453 | p = xdr_reserve_space(xdr, 4); |
2454 | if (!p) | |
1da177e4 | 2455 | goto out_resource; |
c373b0a4 | 2456 | *p++ = cpu_to_be32(1); |
1da177e4 LT |
2457 | } |
2458 | if (bmval0 & FATTR4_WORD0_NAMED_ATTR) { | |
ddd1ea56 BF |
2459 | p = xdr_reserve_space(xdr, 4); |
2460 | if (!p) | |
1da177e4 | 2461 | goto out_resource; |
c373b0a4 | 2462 | *p++ = cpu_to_be32(0); |
1da177e4 LT |
2463 | } |
2464 | if (bmval0 & FATTR4_WORD0_FSID) { | |
ddd1ea56 BF |
2465 | p = xdr_reserve_space(xdr, 16); |
2466 | if (!p) | |
1da177e4 | 2467 | goto out_resource; |
42ca0993 | 2468 | if (exp->ex_fslocs.migrated) { |
b64c7f3b BF |
2469 | p = xdr_encode_hyper(p, NFS4_REFERRAL_FSID_MAJOR); |
2470 | p = xdr_encode_hyper(p, NFS4_REFERRAL_FSID_MINOR); | |
af6a4e28 N |
2471 | } else switch(fsid_source(fhp)) { |
2472 | case FSIDSOURCE_FSID: | |
b64c7f3b BF |
2473 | p = xdr_encode_hyper(p, (u64)exp->ex_fsid); |
2474 | p = xdr_encode_hyper(p, (u64)0); | |
af6a4e28 N |
2475 | break; |
2476 | case FSIDSOURCE_DEV: | |
c373b0a4 BF |
2477 | *p++ = cpu_to_be32(0); |
2478 | *p++ = cpu_to_be32(MAJOR(stat.dev)); | |
2479 | *p++ = cpu_to_be32(0); | |
2480 | *p++ = cpu_to_be32(MINOR(stat.dev)); | |
af6a4e28 N |
2481 | break; |
2482 | case FSIDSOURCE_UUID: | |
94eb3689 KM |
2483 | p = xdr_encode_opaque_fixed(p, exp->ex_uuid, |
2484 | EX_UUID_LEN); | |
af6a4e28 | 2485 | break; |
1da177e4 LT |
2486 | } |
2487 | } | |
2488 | if (bmval0 & FATTR4_WORD0_UNIQUE_HANDLES) { | |
ddd1ea56 BF |
2489 | p = xdr_reserve_space(xdr, 4); |
2490 | if (!p) | |
1da177e4 | 2491 | goto out_resource; |
c373b0a4 | 2492 | *p++ = cpu_to_be32(0); |
1da177e4 LT |
2493 | } |
2494 | if (bmval0 & FATTR4_WORD0_LEASE_TIME) { | |
ddd1ea56 BF |
2495 | p = xdr_reserve_space(xdr, 4); |
2496 | if (!p) | |
1da177e4 | 2497 | goto out_resource; |
c373b0a4 | 2498 | *p++ = cpu_to_be32(nn->nfsd4_lease); |
1da177e4 LT |
2499 | } |
2500 | if (bmval0 & FATTR4_WORD0_RDATTR_ERROR) { | |
ddd1ea56 BF |
2501 | p = xdr_reserve_space(xdr, 4); |
2502 | if (!p) | |
1da177e4 | 2503 | goto out_resource; |
c373b0a4 | 2504 | *p++ = cpu_to_be32(rdattr_err); |
1da177e4 LT |
2505 | } |
2506 | if (bmval0 & FATTR4_WORD0_ACL) { | |
2507 | struct nfs4_ace *ace; | |
1da177e4 LT |
2508 | |
2509 | if (acl == NULL) { | |
ddd1ea56 BF |
2510 | p = xdr_reserve_space(xdr, 4); |
2511 | if (!p) | |
1da177e4 LT |
2512 | goto out_resource; |
2513 | ||
c373b0a4 | 2514 | *p++ = cpu_to_be32(0); |
1da177e4 LT |
2515 | goto out_acl; |
2516 | } | |
ddd1ea56 BF |
2517 | p = xdr_reserve_space(xdr, 4); |
2518 | if (!p) | |
1da177e4 | 2519 | goto out_resource; |
c373b0a4 | 2520 | *p++ = cpu_to_be32(acl->naces); |
1da177e4 | 2521 | |
28e05dd8 | 2522 | for (ace = acl->aces; ace < acl->aces + acl->naces; ace++) { |
ddd1ea56 BF |
2523 | p = xdr_reserve_space(xdr, 4*3); |
2524 | if (!p) | |
1da177e4 | 2525 | goto out_resource; |
c373b0a4 BF |
2526 | *p++ = cpu_to_be32(ace->type); |
2527 | *p++ = cpu_to_be32(ace->flag); | |
2528 | *p++ = cpu_to_be32(ace->access_mask & | |
2529 | NFS4_ACE_MASK_ALL); | |
ddd1ea56 | 2530 | status = nfsd4_encode_aclname(xdr, rqstp, ace); |
1da177e4 LT |
2531 | if (status) |
2532 | goto out; | |
2533 | } | |
2534 | } | |
2535 | out_acl: | |
2536 | if (bmval0 & FATTR4_WORD0_ACLSUPPORT) { | |
ddd1ea56 BF |
2537 | p = xdr_reserve_space(xdr, 4); |
2538 | if (!p) | |
1da177e4 | 2539 | goto out_resource; |
0c9d65e7 | 2540 | *p++ = cpu_to_be32(IS_POSIXACL(dentry->d_inode) ? |
1da177e4 LT |
2541 | ACL4_SUPPORT_ALLOW_ACL|ACL4_SUPPORT_DENY_ACL : 0); |
2542 | } | |
2543 | if (bmval0 & FATTR4_WORD0_CANSETTIME) { | |
ddd1ea56 BF |
2544 | p = xdr_reserve_space(xdr, 4); |
2545 | if (!p) | |
1da177e4 | 2546 | goto out_resource; |
c373b0a4 | 2547 | *p++ = cpu_to_be32(1); |
1da177e4 LT |
2548 | } |
2549 | if (bmval0 & FATTR4_WORD0_CASE_INSENSITIVE) { | |
ddd1ea56 BF |
2550 | p = xdr_reserve_space(xdr, 4); |
2551 | if (!p) | |
1da177e4 | 2552 | goto out_resource; |
c373b0a4 | 2553 | *p++ = cpu_to_be32(0); |
1da177e4 LT |
2554 | } |
2555 | if (bmval0 & FATTR4_WORD0_CASE_PRESERVING) { | |
ddd1ea56 BF |
2556 | p = xdr_reserve_space(xdr, 4); |
2557 | if (!p) | |
1da177e4 | 2558 | goto out_resource; |
c373b0a4 | 2559 | *p++ = cpu_to_be32(1); |
1da177e4 LT |
2560 | } |
2561 | if (bmval0 & FATTR4_WORD0_CHOWN_RESTRICTED) { | |
ddd1ea56 BF |
2562 | p = xdr_reserve_space(xdr, 4); |
2563 | if (!p) | |
1da177e4 | 2564 | goto out_resource; |
c373b0a4 | 2565 | *p++ = cpu_to_be32(1); |
1da177e4 LT |
2566 | } |
2567 | if (bmval0 & FATTR4_WORD0_FILEHANDLE) { | |
ddd1ea56 BF |
2568 | p = xdr_reserve_space(xdr, fhp->fh_handle.fh_size + 4); |
2569 | if (!p) | |
1da177e4 | 2570 | goto out_resource; |
0c0c267b BF |
2571 | p = xdr_encode_opaque(p, &fhp->fh_handle.fh_base, |
2572 | fhp->fh_handle.fh_size); | |
1da177e4 LT |
2573 | } |
2574 | if (bmval0 & FATTR4_WORD0_FILEID) { | |
ddd1ea56 BF |
2575 | p = xdr_reserve_space(xdr, 8); |
2576 | if (!p) | |
1da177e4 | 2577 | goto out_resource; |
b64c7f3b | 2578 | p = xdr_encode_hyper(p, stat.ino); |
1da177e4 LT |
2579 | } |
2580 | if (bmval0 & FATTR4_WORD0_FILES_AVAIL) { | |
ddd1ea56 BF |
2581 | p = xdr_reserve_space(xdr, 8); |
2582 | if (!p) | |
1da177e4 | 2583 | goto out_resource; |
b64c7f3b | 2584 | p = xdr_encode_hyper(p, (u64) statfs.f_ffree); |
1da177e4 LT |
2585 | } |
2586 | if (bmval0 & FATTR4_WORD0_FILES_FREE) { | |
ddd1ea56 BF |
2587 | p = xdr_reserve_space(xdr, 8); |
2588 | if (!p) | |
1da177e4 | 2589 | goto out_resource; |
b64c7f3b | 2590 | p = xdr_encode_hyper(p, (u64) statfs.f_ffree); |
1da177e4 LT |
2591 | } |
2592 | if (bmval0 & FATTR4_WORD0_FILES_TOTAL) { | |
ddd1ea56 BF |
2593 | p = xdr_reserve_space(xdr, 8); |
2594 | if (!p) | |
1da177e4 | 2595 | goto out_resource; |
b64c7f3b | 2596 | p = xdr_encode_hyper(p, (u64) statfs.f_files); |
1da177e4 | 2597 | } |
81c3f413 | 2598 | if (bmval0 & FATTR4_WORD0_FS_LOCATIONS) { |
ddd1ea56 | 2599 | status = nfsd4_encode_fs_locations(xdr, rqstp, exp); |
81c3f413 BF |
2600 | if (status) |
2601 | goto out; | |
2602 | } | |
1da177e4 | 2603 | if (bmval0 & FATTR4_WORD0_HOMOGENEOUS) { |
ddd1ea56 BF |
2604 | p = xdr_reserve_space(xdr, 4); |
2605 | if (!p) | |
1da177e4 | 2606 | goto out_resource; |
c373b0a4 | 2607 | *p++ = cpu_to_be32(1); |
1da177e4 LT |
2608 | } |
2609 | if (bmval0 & FATTR4_WORD0_MAXFILESIZE) { | |
ddd1ea56 BF |
2610 | p = xdr_reserve_space(xdr, 8); |
2611 | if (!p) | |
1da177e4 | 2612 | goto out_resource; |
b64c7f3b | 2613 | p = xdr_encode_hyper(p, exp->ex_path.mnt->mnt_sb->s_maxbytes); |
1da177e4 LT |
2614 | } |
2615 | if (bmval0 & FATTR4_WORD0_MAXLINK) { | |
ddd1ea56 BF |
2616 | p = xdr_reserve_space(xdr, 4); |
2617 | if (!p) | |
1da177e4 | 2618 | goto out_resource; |
c373b0a4 | 2619 | *p++ = cpu_to_be32(255); |
1da177e4 LT |
2620 | } |
2621 | if (bmval0 & FATTR4_WORD0_MAXNAME) { | |
ddd1ea56 BF |
2622 | p = xdr_reserve_space(xdr, 4); |
2623 | if (!p) | |
1da177e4 | 2624 | goto out_resource; |
c373b0a4 | 2625 | *p++ = cpu_to_be32(statfs.f_namelen); |
1da177e4 LT |
2626 | } |
2627 | if (bmval0 & FATTR4_WORD0_MAXREAD) { | |
ddd1ea56 BF |
2628 | p = xdr_reserve_space(xdr, 8); |
2629 | if (!p) | |
1da177e4 | 2630 | goto out_resource; |
b64c7f3b | 2631 | p = xdr_encode_hyper(p, (u64) svc_max_payload(rqstp)); |
1da177e4 LT |
2632 | } |
2633 | if (bmval0 & FATTR4_WORD0_MAXWRITE) { | |
ddd1ea56 BF |
2634 | p = xdr_reserve_space(xdr, 8); |
2635 | if (!p) | |
1da177e4 | 2636 | goto out_resource; |
b64c7f3b | 2637 | p = xdr_encode_hyper(p, (u64) svc_max_payload(rqstp)); |
1da177e4 LT |
2638 | } |
2639 | if (bmval1 & FATTR4_WORD1_MODE) { | |
ddd1ea56 BF |
2640 | p = xdr_reserve_space(xdr, 4); |
2641 | if (!p) | |
1da177e4 | 2642 | goto out_resource; |
c373b0a4 | 2643 | *p++ = cpu_to_be32(stat.mode & S_IALLUGO); |
1da177e4 LT |
2644 | } |
2645 | if (bmval1 & FATTR4_WORD1_NO_TRUNC) { | |
ddd1ea56 BF |
2646 | p = xdr_reserve_space(xdr, 4); |
2647 | if (!p) | |
1da177e4 | 2648 | goto out_resource; |
c373b0a4 | 2649 | *p++ = cpu_to_be32(1); |
1da177e4 LT |
2650 | } |
2651 | if (bmval1 & FATTR4_WORD1_NUMLINKS) { | |
ddd1ea56 BF |
2652 | p = xdr_reserve_space(xdr, 4); |
2653 | if (!p) | |
1da177e4 | 2654 | goto out_resource; |
c373b0a4 | 2655 | *p++ = cpu_to_be32(stat.nlink); |
1da177e4 LT |
2656 | } |
2657 | if (bmval1 & FATTR4_WORD1_OWNER) { | |
ddd1ea56 | 2658 | status = nfsd4_encode_user(xdr, rqstp, stat.uid); |
1da177e4 LT |
2659 | if (status) |
2660 | goto out; | |
2661 | } | |
2662 | if (bmval1 & FATTR4_WORD1_OWNER_GROUP) { | |
ddd1ea56 | 2663 | status = nfsd4_encode_group(xdr, rqstp, stat.gid); |
1da177e4 LT |
2664 | if (status) |
2665 | goto out; | |
2666 | } | |
2667 | if (bmval1 & FATTR4_WORD1_RAWDEV) { | |
ddd1ea56 BF |
2668 | p = xdr_reserve_space(xdr, 8); |
2669 | if (!p) | |
1da177e4 | 2670 | goto out_resource; |
c373b0a4 BF |
2671 | *p++ = cpu_to_be32((u32) MAJOR(stat.rdev)); |
2672 | *p++ = cpu_to_be32((u32) MINOR(stat.rdev)); | |
1da177e4 LT |
2673 | } |
2674 | if (bmval1 & FATTR4_WORD1_SPACE_AVAIL) { | |
ddd1ea56 BF |
2675 | p = xdr_reserve_space(xdr, 8); |
2676 | if (!p) | |
1da177e4 LT |
2677 | goto out_resource; |
2678 | dummy64 = (u64)statfs.f_bavail * (u64)statfs.f_bsize; | |
b64c7f3b | 2679 | p = xdr_encode_hyper(p, dummy64); |
1da177e4 LT |
2680 | } |
2681 | if (bmval1 & FATTR4_WORD1_SPACE_FREE) { | |
ddd1ea56 BF |
2682 | p = xdr_reserve_space(xdr, 8); |
2683 | if (!p) | |
1da177e4 LT |
2684 | goto out_resource; |
2685 | dummy64 = (u64)statfs.f_bfree * (u64)statfs.f_bsize; | |
b64c7f3b | 2686 | p = xdr_encode_hyper(p, dummy64); |
1da177e4 LT |
2687 | } |
2688 | if (bmval1 & FATTR4_WORD1_SPACE_TOTAL) { | |
ddd1ea56 BF |
2689 | p = xdr_reserve_space(xdr, 8); |
2690 | if (!p) | |
1da177e4 LT |
2691 | goto out_resource; |
2692 | dummy64 = (u64)statfs.f_blocks * (u64)statfs.f_bsize; | |
b64c7f3b | 2693 | p = xdr_encode_hyper(p, dummy64); |
1da177e4 LT |
2694 | } |
2695 | if (bmval1 & FATTR4_WORD1_SPACE_USED) { | |
ddd1ea56 BF |
2696 | p = xdr_reserve_space(xdr, 8); |
2697 | if (!p) | |
1da177e4 LT |
2698 | goto out_resource; |
2699 | dummy64 = (u64)stat.blocks << 9; | |
b64c7f3b | 2700 | p = xdr_encode_hyper(p, dummy64); |
1da177e4 LT |
2701 | } |
2702 | if (bmval1 & FATTR4_WORD1_TIME_ACCESS) { | |
ddd1ea56 BF |
2703 | p = xdr_reserve_space(xdr, 12); |
2704 | if (!p) | |
1da177e4 | 2705 | goto out_resource; |
b64c7f3b | 2706 | p = xdr_encode_hyper(p, (s64)stat.atime.tv_sec); |
c373b0a4 | 2707 | *p++ = cpu_to_be32(stat.atime.tv_nsec); |
1da177e4 LT |
2708 | } |
2709 | if (bmval1 & FATTR4_WORD1_TIME_DELTA) { | |
ddd1ea56 BF |
2710 | p = xdr_reserve_space(xdr, 12); |
2711 | if (!p) | |
1da177e4 | 2712 | goto out_resource; |
c373b0a4 BF |
2713 | *p++ = cpu_to_be32(0); |
2714 | *p++ = cpu_to_be32(1); | |
2715 | *p++ = cpu_to_be32(0); | |
1da177e4 LT |
2716 | } |
2717 | if (bmval1 & FATTR4_WORD1_TIME_METADATA) { | |
ddd1ea56 BF |
2718 | p = xdr_reserve_space(xdr, 12); |
2719 | if (!p) | |
1da177e4 | 2720 | goto out_resource; |
b64c7f3b | 2721 | p = xdr_encode_hyper(p, (s64)stat.ctime.tv_sec); |
c373b0a4 | 2722 | *p++ = cpu_to_be32(stat.ctime.tv_nsec); |
1da177e4 LT |
2723 | } |
2724 | if (bmval1 & FATTR4_WORD1_TIME_MODIFY) { | |
ddd1ea56 BF |
2725 | p = xdr_reserve_space(xdr, 12); |
2726 | if (!p) | |
1da177e4 | 2727 | goto out_resource; |
b64c7f3b | 2728 | p = xdr_encode_hyper(p, (s64)stat.mtime.tv_sec); |
c373b0a4 | 2729 | *p++ = cpu_to_be32(stat.mtime.tv_nsec); |
1da177e4 LT |
2730 | } |
2731 | if (bmval1 & FATTR4_WORD1_MOUNTED_ON_FILEID) { | |
0a2050d7 KM |
2732 | struct kstat parent_stat; |
2733 | u64 ino = stat.ino; | |
2734 | ||
ddd1ea56 BF |
2735 | p = xdr_reserve_space(xdr, 8); |
2736 | if (!p) | |
1da177e4 | 2737 | goto out_resource; |
406a7ea9 FF |
2738 | /* |
2739 | * Get parent's attributes if not ignoring crossmount | |
2740 | * and this is the root of a cross-mounted filesystem. | |
2741 | */ | |
2742 | if (ignore_crossmnt == 0 && | |
0a2050d7 KM |
2743 | dentry == exp->ex_path.mnt->mnt_root) { |
2744 | err = get_parent_attributes(exp, &parent_stat); | |
2745 | if (err) | |
2746 | goto out_nfserr; | |
2747 | ino = parent_stat.ino; | |
2748 | } | |
2749 | p = xdr_encode_hyper(p, ino); | |
1da177e4 | 2750 | } |
9cf514cc | 2751 | #ifdef CONFIG_NFSD_PNFS |
6896f15a | 2752 | if (bmval1 & FATTR4_WORD1_FS_LAYOUT_TYPES) { |
8a4c3926 | 2753 | status = nfsd4_encode_layout_types(xdr, exp->ex_layout_types); |
6896f15a KM |
2754 | if (status) |
2755 | goto out; | |
2756 | } | |
2757 | ||
2758 | if (bmval2 & FATTR4_WORD2_LAYOUT_TYPES) { | |
8a4c3926 | 2759 | status = nfsd4_encode_layout_types(xdr, exp->ex_layout_types); |
6896f15a KM |
2760 | if (status) |
2761 | goto out; | |
9cf514cc CH |
2762 | } |
2763 | ||
2764 | if (bmval2 & FATTR4_WORD2_LAYOUT_BLKSIZE) { | |
2765 | p = xdr_reserve_space(xdr, 4); | |
2766 | if (!p) | |
2767 | goto out_resource; | |
2768 | *p++ = cpu_to_be32(stat.blksize); | |
2769 | } | |
2770 | #endif /* CONFIG_NFSD_PNFS */ | |
8c18f205 | 2771 | if (bmval2 & FATTR4_WORD2_SUPPATTR_EXCLCREAT) { |
75976de6 KM |
2772 | status = nfsd4_encode_bitmap(xdr, NFSD_SUPPATTR_EXCLCREAT_WORD0, |
2773 | NFSD_SUPPATTR_EXCLCREAT_WORD1, | |
2774 | NFSD_SUPPATTR_EXCLCREAT_WORD2); | |
2775 | if (status) | |
2776 | goto out; | |
8c18f205 | 2777 | } |
7e705706 | 2778 | |
7d580722 KM |
2779 | if (bmval2 & FATTR4_WORD2_SECURITY_LABEL) { |
2780 | status = nfsd4_encode_security_label(xdr, rqstp, context, | |
2781 | contextlen); | |
2782 | if (status) | |
2783 | goto out; | |
2784 | } | |
2785 | ||
082d4bd7 BF |
2786 | attrlen = htonl(xdr->buf->len - attrlen_offset - 4); |
2787 | write_bytes_to_xdr_buf(xdr->buf, attrlen_offset, &attrlen, 4); | |
1da177e4 LT |
2788 | status = nfs_ok; |
2789 | ||
2790 | out: | |
ba4e55bb | 2791 | #ifdef CONFIG_NFSD_V4_SECURITY_LABEL |
18032ca0 DQ |
2792 | if (context) |
2793 | security_release_secctx(context, contextlen); | |
ba4e55bb | 2794 | #endif /* CONFIG_NFSD_V4_SECURITY_LABEL */ |
28e05dd8 | 2795 | kfree(acl); |
18df11d0 | 2796 | if (tempfh) { |
d50e6136 | 2797 | fh_put(tempfh); |
18df11d0 YZ |
2798 | kfree(tempfh); |
2799 | } | |
1fcea5b2 BF |
2800 | if (status) |
2801 | xdr_truncate_encode(xdr, starting_len); | |
1da177e4 LT |
2802 | return status; |
2803 | out_nfserr: | |
b8dd7b9a | 2804 | status = nfserrno(err); |
1da177e4 LT |
2805 | goto out; |
2806 | out_resource: | |
1da177e4 LT |
2807 | status = nfserr_resource; |
2808 | goto out; | |
1da177e4 LT |
2809 | } |
2810 | ||
2825a7f9 BF |
2811 | static void svcxdr_init_encode_from_buffer(struct xdr_stream *xdr, |
2812 | struct xdr_buf *buf, __be32 *p, int bytes) | |
2813 | { | |
2814 | xdr->scratch.iov_len = 0; | |
2815 | memset(buf, 0, sizeof(struct xdr_buf)); | |
2816 | buf->head[0].iov_base = p; | |
2817 | buf->head[0].iov_len = 0; | |
2818 | buf->len = 0; | |
2819 | xdr->buf = buf; | |
2820 | xdr->iov = buf->head; | |
2821 | xdr->p = p; | |
2822 | xdr->end = (void *)p + bytes; | |
2823 | buf->buflen = bytes; | |
2824 | } | |
2825 | ||
d5184658 BF |
2826 | __be32 nfsd4_encode_fattr_to_buf(__be32 **p, int words, |
2827 | struct svc_fh *fhp, struct svc_export *exp, | |
2828 | struct dentry *dentry, u32 *bmval, | |
2829 | struct svc_rqst *rqstp, int ignore_crossmnt) | |
2830 | { | |
2825a7f9 | 2831 | struct xdr_buf dummy; |
d5184658 BF |
2832 | struct xdr_stream xdr; |
2833 | __be32 ret; | |
2834 | ||
2825a7f9 | 2835 | svcxdr_init_encode_from_buffer(&xdr, &dummy, *p, words << 2); |
d5184658 BF |
2836 | ret = nfsd4_encode_fattr(&xdr, fhp, exp, dentry, bmval, rqstp, |
2837 | ignore_crossmnt); | |
2838 | *p = xdr.p; | |
2839 | return ret; | |
2840 | } | |
2841 | ||
c0ce6ec8 BF |
2842 | static inline int attributes_need_mount(u32 *bmval) |
2843 | { | |
2844 | if (bmval[0] & ~(FATTR4_WORD0_RDATTR_ERROR | FATTR4_WORD0_LEASE_TIME)) | |
2845 | return 1; | |
2846 | if (bmval[1] & ~FATTR4_WORD1_MOUNTED_ON_FILEID) | |
2847 | return 1; | |
2848 | return 0; | |
2849 | } | |
2850 | ||
b37ad28b | 2851 | static __be32 |
561f0ed4 BF |
2852 | nfsd4_encode_dirent_fattr(struct xdr_stream *xdr, struct nfsd4_readdir *cd, |
2853 | const char *name, int namlen) | |
1da177e4 LT |
2854 | { |
2855 | struct svc_export *exp = cd->rd_fhp->fh_export; | |
2856 | struct dentry *dentry; | |
b37ad28b | 2857 | __be32 nfserr; |
406a7ea9 | 2858 | int ignore_crossmnt = 0; |
1da177e4 | 2859 | |
bbddca8e | 2860 | dentry = lookup_one_len_unlocked(name, cd->rd_fhp->fh_dentry, namlen); |
1da177e4 LT |
2861 | if (IS_ERR(dentry)) |
2862 | return nfserrno(PTR_ERR(dentry)); | |
2b0143b5 | 2863 | if (d_really_is_negative(dentry)) { |
b2c0cea6 | 2864 | /* |
bbddca8e N |
2865 | * we're not holding the i_mutex here, so there's |
2866 | * a window where this directory entry could have gone | |
2867 | * away. | |
b2c0cea6 BF |
2868 | */ |
2869 | dput(dentry); | |
2870 | return nfserr_noent; | |
2871 | } | |
1da177e4 LT |
2872 | |
2873 | exp_get(exp); | |
406a7ea9 FF |
2874 | /* |
2875 | * In the case of a mountpoint, the client may be asking for | |
2876 | * attributes that are only properties of the underlying filesystem | |
2877 | * as opposed to the cross-mounted file system. In such a case, | |
2878 | * we will not follow the cross mount and will fill the attribtutes | |
2879 | * directly from the mountpoint dentry. | |
2880 | */ | |
3227fa41 | 2881 | if (nfsd_mountpoint(dentry, exp)) { |
021d3a72 BF |
2882 | int err; |
2883 | ||
3227fa41 BF |
2884 | if (!(exp->ex_flags & NFSEXP_V4ROOT) |
2885 | && !attributes_need_mount(cd->rd_bmval)) { | |
2886 | ignore_crossmnt = 1; | |
2887 | goto out_encode; | |
2888 | } | |
dcb488a3 AA |
2889 | /* |
2890 | * Why the heck aren't we just using nfsd_lookup?? | |
2891 | * Different "."/".." handling? Something else? | |
2892 | * At least, add a comment here to explain.... | |
2893 | */ | |
021d3a72 BF |
2894 | err = nfsd_cross_mnt(cd->rd_rqstp, &dentry, &exp); |
2895 | if (err) { | |
2896 | nfserr = nfserrno(err); | |
1da177e4 LT |
2897 | goto out_put; |
2898 | } | |
dcb488a3 AA |
2899 | nfserr = check_nfsd_access(exp, cd->rd_rqstp); |
2900 | if (nfserr) | |
2901 | goto out_put; | |
1da177e4 LT |
2902 | |
2903 | } | |
3227fa41 | 2904 | out_encode: |
561f0ed4 | 2905 | nfserr = nfsd4_encode_fattr(xdr, NULL, exp, dentry, cd->rd_bmval, |
406a7ea9 | 2906 | cd->rd_rqstp, ignore_crossmnt); |
1da177e4 LT |
2907 | out_put: |
2908 | dput(dentry); | |
2909 | exp_put(exp); | |
2910 | return nfserr; | |
2911 | } | |
2912 | ||
2ebbc012 | 2913 | static __be32 * |
561f0ed4 | 2914 | nfsd4_encode_rdattr_error(struct xdr_stream *xdr, __be32 nfserr) |
1da177e4 | 2915 | { |
561f0ed4 BF |
2916 | __be32 *p; |
2917 | ||
c3a45617 | 2918 | p = xdr_reserve_space(xdr, 20); |
561f0ed4 | 2919 | if (!p) |
1da177e4 LT |
2920 | return NULL; |
2921 | *p++ = htonl(2); | |
2922 | *p++ = htonl(FATTR4_WORD0_RDATTR_ERROR); /* bmval0 */ | |
2923 | *p++ = htonl(0); /* bmval1 */ | |
2924 | ||
87915c64 | 2925 | *p++ = htonl(4); /* attribute length */ |
1da177e4 | 2926 | *p++ = nfserr; /* no htonl */ |
1da177e4 LT |
2927 | return p; |
2928 | } | |
2929 | ||
2930 | static int | |
a0ad13ef N |
2931 | nfsd4_encode_dirent(void *ccdv, const char *name, int namlen, |
2932 | loff_t offset, u64 ino, unsigned int d_type) | |
1da177e4 | 2933 | { |
a0ad13ef | 2934 | struct readdir_cd *ccd = ccdv; |
1da177e4 | 2935 | struct nfsd4_readdir *cd = container_of(ccd, struct nfsd4_readdir, common); |
561f0ed4 BF |
2936 | struct xdr_stream *xdr = cd->xdr; |
2937 | int start_offset = xdr->buf->len; | |
2938 | int cookie_offset; | |
aee37764 | 2939 | u32 name_and_cookie; |
561f0ed4 | 2940 | int entry_bytes; |
b37ad28b | 2941 | __be32 nfserr = nfserr_toosmall; |
561f0ed4 BF |
2942 | __be64 wire_offset; |
2943 | __be32 *p; | |
1da177e4 LT |
2944 | |
2945 | /* In nfsv4, "." and ".." never make it onto the wire.. */ | |
2946 | if (name && isdotent(name, namlen)) { | |
2947 | cd->common.err = nfs_ok; | |
2948 | return 0; | |
2949 | } | |
2950 | ||
561f0ed4 BF |
2951 | if (cd->cookie_offset) { |
2952 | wire_offset = cpu_to_be64(offset); | |
2953 | write_bytes_to_xdr_buf(xdr->buf, cd->cookie_offset, | |
2954 | &wire_offset, 8); | |
2955 | } | |
1da177e4 | 2956 | |
561f0ed4 BF |
2957 | p = xdr_reserve_space(xdr, 4); |
2958 | if (!p) | |
1da177e4 | 2959 | goto fail; |
1da177e4 | 2960 | *p++ = xdr_one; /* mark entry present */ |
561f0ed4 BF |
2961 | cookie_offset = xdr->buf->len; |
2962 | p = xdr_reserve_space(xdr, 3*4 + namlen); | |
2963 | if (!p) | |
2964 | goto fail; | |
1da177e4 LT |
2965 | p = xdr_encode_hyper(p, NFS_OFFSET_MAX); /* offset of next entry */ |
2966 | p = xdr_encode_array(p, name, namlen); /* name length & name */ | |
2967 | ||
561f0ed4 | 2968 | nfserr = nfsd4_encode_dirent_fattr(xdr, cd, name, namlen); |
1da177e4 LT |
2969 | switch (nfserr) { |
2970 | case nfs_ok: | |
1da177e4 LT |
2971 | break; |
2972 | case nfserr_resource: | |
2973 | nfserr = nfserr_toosmall; | |
2974 | goto fail; | |
b2c0cea6 | 2975 | case nfserr_noent: |
f41c5ad2 | 2976 | xdr_truncate_encode(xdr, start_offset); |
b2c0cea6 | 2977 | goto skip_entry; |
1da177e4 LT |
2978 | default: |
2979 | /* | |
2980 | * If the client requested the RDATTR_ERROR attribute, | |
2981 | * we stuff the error code into this attribute | |
2982 | * and continue. If this attribute was not requested, | |
2983 | * then in accordance with the spec, we fail the | |
2984 | * entire READDIR operation(!) | |
2985 | */ | |
2986 | if (!(cd->rd_bmval[0] & FATTR4_WORD0_RDATTR_ERROR)) | |
2987 | goto fail; | |
561f0ed4 | 2988 | p = nfsd4_encode_rdattr_error(xdr, nfserr); |
34081efc FI |
2989 | if (p == NULL) { |
2990 | nfserr = nfserr_toosmall; | |
1da177e4 | 2991 | goto fail; |
34081efc | 2992 | } |
1da177e4 | 2993 | } |
561f0ed4 BF |
2994 | nfserr = nfserr_toosmall; |
2995 | entry_bytes = xdr->buf->len - start_offset; | |
2996 | if (entry_bytes > cd->rd_maxcount) | |
2997 | goto fail; | |
2998 | cd->rd_maxcount -= entry_bytes; | |
aee37764 BF |
2999 | /* |
3000 | * RFC 3530 14.2.24 describes rd_dircount as only a "hint", so | |
3001 | * let's always let through the first entry, at least: | |
3002 | */ | |
0ec016e3 BF |
3003 | if (!cd->rd_dircount) |
3004 | goto fail; | |
3005 | name_and_cookie = 4 + 4 * XDR_QUADLEN(namlen) + 8; | |
aee37764 BF |
3006 | if (name_and_cookie > cd->rd_dircount && cd->cookie_offset) |
3007 | goto fail; | |
3008 | cd->rd_dircount -= min(cd->rd_dircount, name_and_cookie); | |
0ec016e3 | 3009 | |
561f0ed4 | 3010 | cd->cookie_offset = cookie_offset; |
b2c0cea6 | 3011 | skip_entry: |
1da177e4 LT |
3012 | cd->common.err = nfs_ok; |
3013 | return 0; | |
3014 | fail: | |
561f0ed4 | 3015 | xdr_truncate_encode(xdr, start_offset); |
1da177e4 LT |
3016 | cd->common.err = nfserr; |
3017 | return -EINVAL; | |
3018 | } | |
3019 | ||
d0a381dd BF |
3020 | static __be32 |
3021 | nfsd4_encode_stateid(struct xdr_stream *xdr, stateid_t *sid) | |
e2f282b9 | 3022 | { |
bc749ca4 | 3023 | __be32 *p; |
e2f282b9 | 3024 | |
d0a381dd BF |
3025 | p = xdr_reserve_space(xdr, sizeof(stateid_t)); |
3026 | if (!p) | |
3027 | return nfserr_resource; | |
c373b0a4 | 3028 | *p++ = cpu_to_be32(sid->si_generation); |
0c0c267b BF |
3029 | p = xdr_encode_opaque_fixed(p, &sid->si_opaque, |
3030 | sizeof(stateid_opaque_t)); | |
d0a381dd | 3031 | return 0; |
e2f282b9 BH |
3032 | } |
3033 | ||
695e12f8 | 3034 | static __be32 |
b37ad28b | 3035 | nfsd4_encode_access(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_access *access) |
1da177e4 | 3036 | { |
d0a381dd | 3037 | struct xdr_stream *xdr = &resp->xdr; |
bc749ca4 | 3038 | __be32 *p; |
1da177e4 LT |
3039 | |
3040 | if (!nfserr) { | |
d0a381dd BF |
3041 | p = xdr_reserve_space(xdr, 8); |
3042 | if (!p) | |
3043 | return nfserr_resource; | |
c373b0a4 BF |
3044 | *p++ = cpu_to_be32(access->ac_supported); |
3045 | *p++ = cpu_to_be32(access->ac_resp_access); | |
1da177e4 | 3046 | } |
695e12f8 | 3047 | return nfserr; |
1da177e4 LT |
3048 | } |
3049 | ||
1d1bc8f2 BF |
3050 | static __be32 nfsd4_encode_bind_conn_to_session(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_bind_conn_to_session *bcts) |
3051 | { | |
d0a381dd | 3052 | struct xdr_stream *xdr = &resp->xdr; |
1d1bc8f2 BF |
3053 | __be32 *p; |
3054 | ||
3055 | if (!nfserr) { | |
d0a381dd BF |
3056 | p = xdr_reserve_space(xdr, NFS4_MAX_SESSIONID_LEN + 8); |
3057 | if (!p) | |
3058 | return nfserr_resource; | |
0c0c267b BF |
3059 | p = xdr_encode_opaque_fixed(p, bcts->sessionid.data, |
3060 | NFS4_MAX_SESSIONID_LEN); | |
c373b0a4 | 3061 | *p++ = cpu_to_be32(bcts->dir); |
4ce85c8c | 3062 | /* Upshifting from TCP to RDMA is not supported */ |
c373b0a4 | 3063 | *p++ = cpu_to_be32(0); |
1d1bc8f2 BF |
3064 | } |
3065 | return nfserr; | |
3066 | } | |
3067 | ||
695e12f8 | 3068 | static __be32 |
b37ad28b | 3069 | nfsd4_encode_close(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_close *close) |
1da177e4 | 3070 | { |
d0a381dd BF |
3071 | struct xdr_stream *xdr = &resp->xdr; |
3072 | ||
e2f282b9 | 3073 | if (!nfserr) |
d0a381dd | 3074 | nfserr = nfsd4_encode_stateid(xdr, &close->cl_stateid); |
e2f282b9 | 3075 | |
695e12f8 | 3076 | return nfserr; |
1da177e4 LT |
3077 | } |
3078 | ||
3079 | ||
695e12f8 | 3080 | static __be32 |
b37ad28b | 3081 | nfsd4_encode_commit(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_commit *commit) |
1da177e4 | 3082 | { |
d0a381dd | 3083 | struct xdr_stream *xdr = &resp->xdr; |
bc749ca4 | 3084 | __be32 *p; |
1da177e4 LT |
3085 | |
3086 | if (!nfserr) { | |
d0a381dd BF |
3087 | p = xdr_reserve_space(xdr, NFS4_VERIFIER_SIZE); |
3088 | if (!p) | |
3089 | return nfserr_resource; | |
0c0c267b BF |
3090 | p = xdr_encode_opaque_fixed(p, commit->co_verf.data, |
3091 | NFS4_VERIFIER_SIZE); | |
1da177e4 | 3092 | } |
695e12f8 | 3093 | return nfserr; |
1da177e4 LT |
3094 | } |
3095 | ||
695e12f8 | 3096 | static __be32 |
b37ad28b | 3097 | nfsd4_encode_create(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_create *create) |
1da177e4 | 3098 | { |
d0a381dd | 3099 | struct xdr_stream *xdr = &resp->xdr; |
bc749ca4 | 3100 | __be32 *p; |
1da177e4 LT |
3101 | |
3102 | if (!nfserr) { | |
75976de6 | 3103 | p = xdr_reserve_space(xdr, 20); |
d0a381dd BF |
3104 | if (!p) |
3105 | return nfserr_resource; | |
75976de6 KM |
3106 | encode_cinfo(p, &create->cr_cinfo); |
3107 | nfserr = nfsd4_encode_bitmap(xdr, create->cr_bmval[0], | |
3108 | create->cr_bmval[1], create->cr_bmval[2]); | |
1da177e4 | 3109 | } |
695e12f8 | 3110 | return nfserr; |
1da177e4 LT |
3111 | } |
3112 | ||
b37ad28b AV |
3113 | static __be32 |
3114 | nfsd4_encode_getattr(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_getattr *getattr) | |
1da177e4 LT |
3115 | { |
3116 | struct svc_fh *fhp = getattr->ga_fhp; | |
d5184658 | 3117 | struct xdr_stream *xdr = &resp->xdr; |
1da177e4 LT |
3118 | |
3119 | if (nfserr) | |
3120 | return nfserr; | |
3121 | ||
d5184658 BF |
3122 | nfserr = nfsd4_encode_fattr(xdr, fhp, fhp->fh_export, fhp->fh_dentry, |
3123 | getattr->ga_bmval, | |
406a7ea9 | 3124 | resp->rqstp, 0); |
1da177e4 LT |
3125 | return nfserr; |
3126 | } | |
3127 | ||
695e12f8 BH |
3128 | static __be32 |
3129 | nfsd4_encode_getfh(struct nfsd4_compoundres *resp, __be32 nfserr, struct svc_fh **fhpp) | |
1da177e4 | 3130 | { |
d0a381dd | 3131 | struct xdr_stream *xdr = &resp->xdr; |
695e12f8 | 3132 | struct svc_fh *fhp = *fhpp; |
1da177e4 | 3133 | unsigned int len; |
bc749ca4 | 3134 | __be32 *p; |
1da177e4 LT |
3135 | |
3136 | if (!nfserr) { | |
3137 | len = fhp->fh_handle.fh_size; | |
d0a381dd BF |
3138 | p = xdr_reserve_space(xdr, len + 4); |
3139 | if (!p) | |
3140 | return nfserr_resource; | |
0c0c267b | 3141 | p = xdr_encode_opaque(p, &fhp->fh_handle.fh_base, len); |
1da177e4 | 3142 | } |
695e12f8 | 3143 | return nfserr; |
1da177e4 LT |
3144 | } |
3145 | ||
3146 | /* | |
3147 | * Including all fields other than the name, a LOCK4denied structure requires | |
3148 | * 8(clientid) + 4(namelen) + 8(offset) + 8(length) + 4(type) = 32 bytes. | |
3149 | */ | |
d0a381dd BF |
3150 | static __be32 |
3151 | nfsd4_encode_lock_denied(struct xdr_stream *xdr, struct nfsd4_lock_denied *ld) | |
1da177e4 | 3152 | { |
7c13f344 | 3153 | struct xdr_netobj *conf = &ld->ld_owner; |
bc749ca4 | 3154 | __be32 *p; |
1da177e4 | 3155 | |
8c7424cf | 3156 | again: |
d0a381dd | 3157 | p = xdr_reserve_space(xdr, 32 + XDR_LEN(conf->len)); |
8c7424cf BF |
3158 | if (!p) { |
3159 | /* | |
3160 | * Don't fail to return the result just because we can't | |
3161 | * return the conflicting open: | |
3162 | */ | |
3163 | if (conf->len) { | |
f98bac5a | 3164 | kfree(conf->data); |
8c7424cf BF |
3165 | conf->len = 0; |
3166 | conf->data = NULL; | |
3167 | goto again; | |
3168 | } | |
d0a381dd | 3169 | return nfserr_resource; |
8c7424cf | 3170 | } |
b64c7f3b BF |
3171 | p = xdr_encode_hyper(p, ld->ld_start); |
3172 | p = xdr_encode_hyper(p, ld->ld_length); | |
c373b0a4 | 3173 | *p++ = cpu_to_be32(ld->ld_type); |
7c13f344 | 3174 | if (conf->len) { |
0c0c267b BF |
3175 | p = xdr_encode_opaque_fixed(p, &ld->ld_clientid, 8); |
3176 | p = xdr_encode_opaque(p, conf->data, conf->len); | |
f98bac5a | 3177 | kfree(conf->data); |
1da177e4 | 3178 | } else { /* non - nfsv4 lock in conflict, no clientid nor owner */ |
b64c7f3b | 3179 | p = xdr_encode_hyper(p, (u64)0); /* clientid */ |
c373b0a4 | 3180 | *p++ = cpu_to_be32(0); /* length of owner name */ |
1da177e4 | 3181 | } |
d0a381dd | 3182 | return nfserr_denied; |
1da177e4 LT |
3183 | } |
3184 | ||
695e12f8 | 3185 | static __be32 |
b37ad28b | 3186 | nfsd4_encode_lock(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_lock *lock) |
1da177e4 | 3187 | { |
d0a381dd BF |
3188 | struct xdr_stream *xdr = &resp->xdr; |
3189 | ||
e2f282b9 | 3190 | if (!nfserr) |
d0a381dd | 3191 | nfserr = nfsd4_encode_stateid(xdr, &lock->lk_resp_stateid); |
e2f282b9 | 3192 | else if (nfserr == nfserr_denied) |
d0a381dd | 3193 | nfserr = nfsd4_encode_lock_denied(xdr, &lock->lk_denied); |
f98bac5a | 3194 | |
695e12f8 | 3195 | return nfserr; |
1da177e4 LT |
3196 | } |
3197 | ||
695e12f8 | 3198 | static __be32 |
b37ad28b | 3199 | nfsd4_encode_lockt(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_lockt *lockt) |
1da177e4 | 3200 | { |
d0a381dd BF |
3201 | struct xdr_stream *xdr = &resp->xdr; |
3202 | ||
1da177e4 | 3203 | if (nfserr == nfserr_denied) |
d0a381dd | 3204 | nfsd4_encode_lock_denied(xdr, &lockt->lt_denied); |
695e12f8 | 3205 | return nfserr; |
1da177e4 LT |
3206 | } |
3207 | ||
695e12f8 | 3208 | static __be32 |
b37ad28b | 3209 | nfsd4_encode_locku(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_locku *locku) |
1da177e4 | 3210 | { |
d0a381dd BF |
3211 | struct xdr_stream *xdr = &resp->xdr; |
3212 | ||
e2f282b9 | 3213 | if (!nfserr) |
d0a381dd | 3214 | nfserr = nfsd4_encode_stateid(xdr, &locku->lu_stateid); |
e2f282b9 | 3215 | |
695e12f8 | 3216 | return nfserr; |
1da177e4 LT |
3217 | } |
3218 | ||
3219 | ||
695e12f8 | 3220 | static __be32 |
b37ad28b | 3221 | nfsd4_encode_link(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_link *link) |
1da177e4 | 3222 | { |
d0a381dd | 3223 | struct xdr_stream *xdr = &resp->xdr; |
bc749ca4 | 3224 | __be32 *p; |
1da177e4 LT |
3225 | |
3226 | if (!nfserr) { | |
d0a381dd BF |
3227 | p = xdr_reserve_space(xdr, 20); |
3228 | if (!p) | |
3229 | return nfserr_resource; | |
d05d5744 | 3230 | p = encode_cinfo(p, &link->li_cinfo); |
1da177e4 | 3231 | } |
695e12f8 | 3232 | return nfserr; |
1da177e4 LT |
3233 | } |
3234 | ||
3235 | ||
695e12f8 | 3236 | static __be32 |
b37ad28b | 3237 | nfsd4_encode_open(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_open *open) |
1da177e4 | 3238 | { |
d0a381dd | 3239 | struct xdr_stream *xdr = &resp->xdr; |
bc749ca4 | 3240 | __be32 *p; |
1da177e4 LT |
3241 | |
3242 | if (nfserr) | |
3243 | goto out; | |
3244 | ||
d0a381dd BF |
3245 | nfserr = nfsd4_encode_stateid(xdr, &open->op_stateid); |
3246 | if (nfserr) | |
3247 | goto out; | |
75976de6 | 3248 | p = xdr_reserve_space(xdr, 24); |
d0a381dd BF |
3249 | if (!p) |
3250 | return nfserr_resource; | |
d05d5744 | 3251 | p = encode_cinfo(p, &open->op_cinfo); |
c373b0a4 | 3252 | *p++ = cpu_to_be32(open->op_rflags); |
1da177e4 | 3253 | |
75976de6 KM |
3254 | nfserr = nfsd4_encode_bitmap(xdr, open->op_bmval[0], open->op_bmval[1], |
3255 | open->op_bmval[2]); | |
3256 | if (nfserr) | |
3257 | goto out; | |
3258 | ||
3259 | p = xdr_reserve_space(xdr, 4); | |
3260 | if (!p) | |
3261 | return nfserr_resource; | |
3262 | ||
3263 | *p++ = cpu_to_be32(open->op_delegate_type); | |
1da177e4 LT |
3264 | switch (open->op_delegate_type) { |
3265 | case NFS4_OPEN_DELEGATE_NONE: | |
3266 | break; | |
3267 | case NFS4_OPEN_DELEGATE_READ: | |
d0a381dd BF |
3268 | nfserr = nfsd4_encode_stateid(xdr, &open->op_delegate_stateid); |
3269 | if (nfserr) | |
3270 | return nfserr; | |
3271 | p = xdr_reserve_space(xdr, 20); | |
3272 | if (!p) | |
3273 | return nfserr_resource; | |
c373b0a4 | 3274 | *p++ = cpu_to_be32(open->op_recall); |
1da177e4 LT |
3275 | |
3276 | /* | |
3277 | * TODO: ACE's in delegations | |
3278 | */ | |
c373b0a4 BF |
3279 | *p++ = cpu_to_be32(NFS4_ACE_ACCESS_ALLOWED_ACE_TYPE); |
3280 | *p++ = cpu_to_be32(0); | |
3281 | *p++ = cpu_to_be32(0); | |
3282 | *p++ = cpu_to_be32(0); /* XXX: is NULL principal ok? */ | |
1da177e4 LT |
3283 | break; |
3284 | case NFS4_OPEN_DELEGATE_WRITE: | |
d0a381dd BF |
3285 | nfserr = nfsd4_encode_stateid(xdr, &open->op_delegate_stateid); |
3286 | if (nfserr) | |
3287 | return nfserr; | |
3288 | p = xdr_reserve_space(xdr, 32); | |
3289 | if (!p) | |
3290 | return nfserr_resource; | |
c373b0a4 | 3291 | *p++ = cpu_to_be32(0); |
1da177e4 LT |
3292 | |
3293 | /* | |
3294 | * TODO: space_limit's in delegations | |
3295 | */ | |
c373b0a4 BF |
3296 | *p++ = cpu_to_be32(NFS4_LIMIT_SIZE); |
3297 | *p++ = cpu_to_be32(~(u32)0); | |
3298 | *p++ = cpu_to_be32(~(u32)0); | |
1da177e4 LT |
3299 | |
3300 | /* | |
3301 | * TODO: ACE's in delegations | |
3302 | */ | |
c373b0a4 BF |
3303 | *p++ = cpu_to_be32(NFS4_ACE_ACCESS_ALLOWED_ACE_TYPE); |
3304 | *p++ = cpu_to_be32(0); | |
3305 | *p++ = cpu_to_be32(0); | |
3306 | *p++ = cpu_to_be32(0); /* XXX: is NULL principal ok? */ | |
1da177e4 | 3307 | break; |
d24433cd BH |
3308 | case NFS4_OPEN_DELEGATE_NONE_EXT: /* 4.1 */ |
3309 | switch (open->op_why_no_deleg) { | |
3310 | case WND4_CONTENTION: | |
3311 | case WND4_RESOURCE: | |
d0a381dd BF |
3312 | p = xdr_reserve_space(xdr, 8); |
3313 | if (!p) | |
3314 | return nfserr_resource; | |
c373b0a4 BF |
3315 | *p++ = cpu_to_be32(open->op_why_no_deleg); |
3316 | /* deleg signaling not supported yet: */ | |
3317 | *p++ = cpu_to_be32(0); | |
d24433cd BH |
3318 | break; |
3319 | default: | |
d0a381dd BF |
3320 | p = xdr_reserve_space(xdr, 4); |
3321 | if (!p) | |
3322 | return nfserr_resource; | |
c373b0a4 | 3323 | *p++ = cpu_to_be32(open->op_why_no_deleg); |
d24433cd | 3324 | } |
d24433cd | 3325 | break; |
1da177e4 LT |
3326 | default: |
3327 | BUG(); | |
3328 | } | |
3329 | /* XXX save filehandle here */ | |
3330 | out: | |
695e12f8 | 3331 | return nfserr; |
1da177e4 LT |
3332 | } |
3333 | ||
695e12f8 | 3334 | static __be32 |
b37ad28b | 3335 | nfsd4_encode_open_confirm(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_open_confirm *oc) |
1da177e4 | 3336 | { |
d0a381dd BF |
3337 | struct xdr_stream *xdr = &resp->xdr; |
3338 | ||
e2f282b9 | 3339 | if (!nfserr) |
d0a381dd | 3340 | nfserr = nfsd4_encode_stateid(xdr, &oc->oc_resp_stateid); |
1da177e4 | 3341 | |
695e12f8 | 3342 | return nfserr; |
1da177e4 LT |
3343 | } |
3344 | ||
695e12f8 | 3345 | static __be32 |
b37ad28b | 3346 | nfsd4_encode_open_downgrade(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_open_downgrade *od) |
1da177e4 | 3347 | { |
d0a381dd BF |
3348 | struct xdr_stream *xdr = &resp->xdr; |
3349 | ||
e2f282b9 | 3350 | if (!nfserr) |
d0a381dd | 3351 | nfserr = nfsd4_encode_stateid(xdr, &od->od_stateid); |
1da177e4 | 3352 | |
695e12f8 | 3353 | return nfserr; |
1da177e4 LT |
3354 | } |
3355 | ||
dc97618d BF |
3356 | static __be32 nfsd4_encode_splice_read( |
3357 | struct nfsd4_compoundres *resp, | |
3358 | struct nfsd4_read *read, | |
3359 | struct file *file, unsigned long maxcount) | |
1da177e4 | 3360 | { |
ddd1ea56 | 3361 | struct xdr_stream *xdr = &resp->xdr; |
34a78b48 | 3362 | struct xdr_buf *buf = xdr->buf; |
dc97618d | 3363 | u32 eof; |
ac503e4a | 3364 | long len; |
30596768 | 3365 | int space_left; |
dc97618d | 3366 | __be32 nfserr; |
fec25fa4 | 3367 | __be32 *p = xdr->p - 2; |
1da177e4 | 3368 | |
d5d5c304 KM |
3369 | /* Make sure there will be room for padding if needed */ |
3370 | if (xdr->end - xdr->p < 1) | |
d0a381dd | 3371 | return nfserr_resource; |
dc97618d | 3372 | |
ac503e4a | 3373 | len = maxcount; |
dc97618d BF |
3374 | nfserr = nfsd_splice_read(read->rd_rqstp, file, |
3375 | read->rd_offset, &maxcount); | |
3376 | if (nfserr) { | |
3377 | /* | |
3378 | * nfsd_splice_actor may have already messed with the | |
3379 | * page length; reset it so as not to confuse | |
3380 | * xdr_truncate_encode: | |
3381 | */ | |
34a78b48 | 3382 | buf->page_len = 0; |
dc97618d | 3383 | return nfserr; |
b0e35fda | 3384 | } |
1da177e4 | 3385 | |
ac503e4a BC |
3386 | eof = nfsd_eof_on_read(len, maxcount, read->rd_offset, |
3387 | d_inode(read->rd_fhp->fh_dentry)->i_size); | |
4e21ac4b | 3388 | |
fec25fa4 BF |
3389 | *(p++) = htonl(eof); |
3390 | *(p++) = htonl(maxcount); | |
dc97618d | 3391 | |
34a78b48 BF |
3392 | buf->page_len = maxcount; |
3393 | buf->len += maxcount; | |
15b23ef5 BF |
3394 | xdr->page_ptr += (buf->page_base + maxcount + PAGE_SIZE - 1) |
3395 | / PAGE_SIZE; | |
dc97618d BF |
3396 | |
3397 | /* Use rest of head for padding and remaining ops: */ | |
34a78b48 BF |
3398 | buf->tail[0].iov_base = xdr->p; |
3399 | buf->tail[0].iov_len = 0; | |
fec25fa4 | 3400 | xdr->iov = buf->tail; |
dc97618d | 3401 | if (maxcount&3) { |
fec25fa4 BF |
3402 | int pad = 4 - (maxcount&3); |
3403 | ||
3404 | *(xdr->p++) = 0; | |
3405 | ||
34a78b48 | 3406 | buf->tail[0].iov_base += maxcount&3; |
fec25fa4 BF |
3407 | buf->tail[0].iov_len = pad; |
3408 | buf->len += pad; | |
b0e35fda | 3409 | } |
2825a7f9 | 3410 | |
dc97618d | 3411 | space_left = min_t(int, (void *)xdr->end - (void *)xdr->p, |
34a78b48 BF |
3412 | buf->buflen - buf->len); |
3413 | buf->buflen = buf->len + space_left; | |
dc97618d BF |
3414 | xdr->end = (__be32 *)((void *)xdr->end + space_left); |
3415 | ||
3416 | return 0; | |
3417 | } | |
3418 | ||
3419 | static __be32 nfsd4_encode_readv(struct nfsd4_compoundres *resp, | |
3420 | struct nfsd4_read *read, | |
3421 | struct file *file, unsigned long maxcount) | |
3422 | { | |
3423 | struct xdr_stream *xdr = &resp->xdr; | |
3424 | u32 eof; | |
3425 | int v; | |
dc97618d | 3426 | int starting_len = xdr->buf->len - 8; |
dc97618d | 3427 | long len; |
b0420980 | 3428 | int thislen; |
dc97618d BF |
3429 | __be32 nfserr; |
3430 | __be32 tmp; | |
3431 | __be32 *p; | |
b0420980 BF |
3432 | u32 zzz = 0; |
3433 | int pad; | |
1da177e4 LT |
3434 | |
3435 | len = maxcount; | |
3436 | v = 0; | |
6ff9897d | 3437 | |
1055414f | 3438 | thislen = min_t(long, len, ((void *)xdr->end - (void *)xdr->p)); |
b0420980 BF |
3439 | p = xdr_reserve_space(xdr, (thislen+3)&~3); |
3440 | WARN_ON_ONCE(!p); | |
3441 | resp->rqstp->rq_vec[v].iov_base = p; | |
3442 | resp->rqstp->rq_vec[v].iov_len = thislen; | |
3443 | v++; | |
3444 | len -= thislen; | |
3445 | ||
3446 | while (len) { | |
6ff9897d | 3447 | thislen = min_t(long, len, PAGE_SIZE); |
b0420980 BF |
3448 | p = xdr_reserve_space(xdr, (thislen+3)&~3); |
3449 | WARN_ON_ONCE(!p); | |
3450 | resp->rqstp->rq_vec[v].iov_base = p; | |
6ff9897d | 3451 | resp->rqstp->rq_vec[v].iov_len = thislen; |
1da177e4 | 3452 | v++; |
6ff9897d | 3453 | len -= thislen; |
1da177e4 LT |
3454 | } |
3455 | read->rd_vlen = v; | |
3456 | ||
ac503e4a | 3457 | len = maxcount; |
dc97618d BF |
3458 | nfserr = nfsd_readv(file, read->rd_offset, resp->rqstp->rq_vec, |
3459 | read->rd_vlen, &maxcount); | |
3460 | if (nfserr) | |
1da177e4 | 3461 | return nfserr; |
b0420980 | 3462 | xdr_truncate_encode(xdr, starting_len + 8 + ((maxcount+3)&~3)); |
dc97618d | 3463 | |
ac503e4a BC |
3464 | eof = nfsd_eof_on_read(len, maxcount, read->rd_offset, |
3465 | d_inode(read->rd_fhp->fh_dentry)->i_size); | |
1da177e4 | 3466 | |
dc97618d BF |
3467 | tmp = htonl(eof); |
3468 | write_bytes_to_xdr_buf(xdr->buf, starting_len , &tmp, 4); | |
3469 | tmp = htonl(maxcount); | |
3470 | write_bytes_to_xdr_buf(xdr->buf, starting_len + 4, &tmp, 4); | |
3471 | ||
b0420980 BF |
3472 | pad = (maxcount&3) ? 4 - (maxcount&3) : 0; |
3473 | write_bytes_to_xdr_buf(xdr->buf, starting_len + 8 + maxcount, | |
3474 | &zzz, pad); | |
1da177e4 | 3475 | return 0; |
dc97618d BF |
3476 | |
3477 | } | |
3478 | ||
3479 | static __be32 | |
3480 | nfsd4_encode_read(struct nfsd4_compoundres *resp, __be32 nfserr, | |
3481 | struct nfsd4_read *read) | |
3482 | { | |
3483 | unsigned long maxcount; | |
3484 | struct xdr_stream *xdr = &resp->xdr; | |
3485 | struct file *file = read->rd_filp; | |
3486 | int starting_len = xdr->buf->len; | |
e749a462 | 3487 | struct raparms *ra = NULL; |
dc97618d | 3488 | __be32 *p; |
dc97618d BF |
3489 | |
3490 | if (nfserr) | |
96bcad50 | 3491 | goto out; |
dc97618d BF |
3492 | |
3493 | p = xdr_reserve_space(xdr, 8); /* eof flag and byte count */ | |
3494 | if (!p) { | |
779fb0f3 | 3495 | WARN_ON_ONCE(test_bit(RQ_SPLICE_OK, &resp->rqstp->rq_flags)); |
96bcad50 CH |
3496 | nfserr = nfserr_resource; |
3497 | goto out; | |
dc97618d | 3498 | } |
68e8bb03 CH |
3499 | if (resp->xdr.buf->page_len && |
3500 | test_bit(RQ_SPLICE_OK, &resp->rqstp->rq_flags)) { | |
b0420980 | 3501 | WARN_ON_ONCE(1); |
96bcad50 CH |
3502 | nfserr = nfserr_resource; |
3503 | goto out; | |
dc97618d | 3504 | } |
dc97618d BF |
3505 | xdr_commit_encode(xdr); |
3506 | ||
3507 | maxcount = svc_max_payload(resp->rqstp); | |
68e8bb03 CH |
3508 | maxcount = min_t(unsigned long, maxcount, |
3509 | (xdr->buf->buflen - xdr->buf->len)); | |
3c7aa15d | 3510 | maxcount = min_t(unsigned long, maxcount, read->rd_length); |
dc97618d | 3511 | |
af90f707 | 3512 | if (read->rd_tmp_file) |
e749a462 | 3513 | ra = nfsd_init_raparms(file); |
dc97618d | 3514 | |
68e8bb03 CH |
3515 | if (file->f_op->splice_read && |
3516 | test_bit(RQ_SPLICE_OK, &resp->rqstp->rq_flags)) | |
96bcad50 | 3517 | nfserr = nfsd4_encode_splice_read(resp, read, file, maxcount); |
dc97618d | 3518 | else |
96bcad50 | 3519 | nfserr = nfsd4_encode_readv(resp, read, file, maxcount); |
dc97618d | 3520 | |
e749a462 CH |
3521 | if (ra) |
3522 | nfsd_put_raparams(file, ra); | |
dc97618d | 3523 | |
96bcad50 | 3524 | if (nfserr) |
dc97618d | 3525 | xdr_truncate_encode(xdr, starting_len); |
96bcad50 CH |
3526 | |
3527 | out: | |
3528 | if (file) | |
3529 | fput(file); | |
3530 | return nfserr; | |
1da177e4 LT |
3531 | } |
3532 | ||
b37ad28b AV |
3533 | static __be32 |
3534 | nfsd4_encode_readlink(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_readlink *readlink) | |
1da177e4 LT |
3535 | { |
3536 | int maxcount; | |
476a7b1f BF |
3537 | __be32 wire_count; |
3538 | int zero = 0; | |
ddd1ea56 | 3539 | struct xdr_stream *xdr = &resp->xdr; |
1fcea5b2 | 3540 | int length_offset = xdr->buf->len; |
bc749ca4 | 3541 | __be32 *p; |
1da177e4 LT |
3542 | |
3543 | if (nfserr) | |
3544 | return nfserr; | |
2825a7f9 BF |
3545 | |
3546 | p = xdr_reserve_space(xdr, 4); | |
3547 | if (!p) | |
3548 | return nfserr_resource; | |
1da177e4 | 3549 | maxcount = PAGE_SIZE; |
d0a381dd | 3550 | |
476a7b1f BF |
3551 | p = xdr_reserve_space(xdr, maxcount); |
3552 | if (!p) | |
4e21ac4b | 3553 | return nfserr_resource; |
1da177e4 LT |
3554 | /* |
3555 | * XXX: By default, the ->readlink() VFS op will truncate symlinks | |
3556 | * if they would overflow the buffer. Is this kosher in NFSv4? If | |
3557 | * not, one easy fix is: if ->readlink() precisely fills the buffer, | |
3558 | * assume that truncation occurred, and return NFS4ERR_RESOURCE. | |
3559 | */ | |
476a7b1f BF |
3560 | nfserr = nfsd_readlink(readlink->rl_rqstp, readlink->rl_fhp, |
3561 | (char *)p, &maxcount); | |
1da177e4 | 3562 | if (nfserr == nfserr_isdir) |
d3f627c8 BF |
3563 | nfserr = nfserr_inval; |
3564 | if (nfserr) { | |
1fcea5b2 | 3565 | xdr_truncate_encode(xdr, length_offset); |
1da177e4 | 3566 | return nfserr; |
d3f627c8 | 3567 | } |
1da177e4 | 3568 | |
476a7b1f BF |
3569 | wire_count = htonl(maxcount); |
3570 | write_bytes_to_xdr_buf(xdr->buf, length_offset, &wire_count, 4); | |
69bbd9c7 | 3571 | xdr_truncate_encode(xdr, length_offset + 4 + ALIGN(maxcount, 4)); |
476a7b1f BF |
3572 | if (maxcount & 3) |
3573 | write_bytes_to_xdr_buf(xdr->buf, length_offset + 4 + maxcount, | |
3574 | &zero, 4 - (maxcount&3)); | |
1da177e4 LT |
3575 | return 0; |
3576 | } | |
3577 | ||
b37ad28b AV |
3578 | static __be32 |
3579 | nfsd4_encode_readdir(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_readdir *readdir) | |
1da177e4 LT |
3580 | { |
3581 | int maxcount; | |
561f0ed4 | 3582 | int bytes_left; |
1da177e4 | 3583 | loff_t offset; |
561f0ed4 | 3584 | __be64 wire_offset; |
ddd1ea56 | 3585 | struct xdr_stream *xdr = &resp->xdr; |
1fcea5b2 | 3586 | int starting_len = xdr->buf->len; |
bc749ca4 | 3587 | __be32 *p; |
1da177e4 LT |
3588 | |
3589 | if (nfserr) | |
3590 | return nfserr; | |
1da177e4 | 3591 | |
d0a381dd BF |
3592 | p = xdr_reserve_space(xdr, NFS4_VERIFIER_SIZE); |
3593 | if (!p) | |
3594 | return nfserr_resource; | |
1da177e4 LT |
3595 | |
3596 | /* XXX: Following NFSv3, we ignore the READDIR verifier for now. */ | |
c373b0a4 BF |
3597 | *p++ = cpu_to_be32(0); |
3598 | *p++ = cpu_to_be32(0); | |
4aea24b2 BF |
3599 | resp->xdr.buf->head[0].iov_len = ((char *)resp->xdr.p) |
3600 | - (char *)resp->xdr.buf->head[0].iov_base; | |
1da177e4 LT |
3601 | |
3602 | /* | |
561f0ed4 BF |
3603 | * Number of bytes left for directory entries allowing for the |
3604 | * final 8 bytes of the readdir and a following failed op: | |
3605 | */ | |
3606 | bytes_left = xdr->buf->buflen - xdr->buf->len | |
3607 | - COMPOUND_ERR_SLACK_SPACE - 8; | |
3608 | if (bytes_left < 0) { | |
3609 | nfserr = nfserr_resource; | |
3610 | goto err_no_verf; | |
3611 | } | |
3612 | maxcount = min_t(u32, readdir->rd_maxcount, INT_MAX); | |
3613 | /* | |
3614 | * Note the rfc defines rd_maxcount as the size of the | |
3615 | * READDIR4resok structure, which includes the verifier above | |
3616 | * and the 8 bytes encoded at the end of this function: | |
1da177e4 | 3617 | */ |
561f0ed4 BF |
3618 | if (maxcount < 16) { |
3619 | nfserr = nfserr_toosmall; | |
1da177e4 LT |
3620 | goto err_no_verf; |
3621 | } | |
561f0ed4 | 3622 | maxcount = min_t(int, maxcount-16, bytes_left); |
1da177e4 | 3623 | |
aee37764 BF |
3624 | /* RFC 3530 14.2.24 allows us to ignore dircount when it's 0: */ |
3625 | if (!readdir->rd_dircount) | |
3626 | readdir->rd_dircount = INT_MAX; | |
3627 | ||
561f0ed4 BF |
3628 | readdir->xdr = xdr; |
3629 | readdir->rd_maxcount = maxcount; | |
1da177e4 | 3630 | readdir->common.err = 0; |
561f0ed4 | 3631 | readdir->cookie_offset = 0; |
1da177e4 LT |
3632 | |
3633 | offset = readdir->rd_cookie; | |
3634 | nfserr = nfsd_readdir(readdir->rd_rqstp, readdir->rd_fhp, | |
3635 | &offset, | |
3636 | &readdir->common, nfsd4_encode_dirent); | |
3637 | if (nfserr == nfs_ok && | |
3638 | readdir->common.err == nfserr_toosmall && | |
561f0ed4 BF |
3639 | xdr->buf->len == starting_len + 8) { |
3640 | /* nothing encoded; which limit did we hit?: */ | |
3641 | if (maxcount - 16 < bytes_left) | |
3642 | /* It was the fault of rd_maxcount: */ | |
3643 | nfserr = nfserr_toosmall; | |
3644 | else | |
3645 | /* We ran out of buffer space: */ | |
3646 | nfserr = nfserr_resource; | |
3647 | } | |
1da177e4 LT |
3648 | if (nfserr) |
3649 | goto err_no_verf; | |
3650 | ||
561f0ed4 BF |
3651 | if (readdir->cookie_offset) { |
3652 | wire_offset = cpu_to_be64(offset); | |
3653 | write_bytes_to_xdr_buf(xdr->buf, readdir->cookie_offset, | |
3654 | &wire_offset, 8); | |
3655 | } | |
1da177e4 | 3656 | |
561f0ed4 BF |
3657 | p = xdr_reserve_space(xdr, 8); |
3658 | if (!p) { | |
3659 | WARN_ON_ONCE(1); | |
3660 | goto err_no_verf; | |
3661 | } | |
1da177e4 LT |
3662 | *p++ = 0; /* no more entries */ |
3663 | *p++ = htonl(readdir->common.err == nfserr_eof); | |
1da177e4 LT |
3664 | |
3665 | return 0; | |
3666 | err_no_verf: | |
1fcea5b2 | 3667 | xdr_truncate_encode(xdr, starting_len); |
1da177e4 LT |
3668 | return nfserr; |
3669 | } | |
3670 | ||
695e12f8 | 3671 | static __be32 |
b37ad28b | 3672 | nfsd4_encode_remove(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_remove *remove) |
1da177e4 | 3673 | { |
d0a381dd | 3674 | struct xdr_stream *xdr = &resp->xdr; |
bc749ca4 | 3675 | __be32 *p; |
1da177e4 LT |
3676 | |
3677 | if (!nfserr) { | |
d0a381dd BF |
3678 | p = xdr_reserve_space(xdr, 20); |
3679 | if (!p) | |
3680 | return nfserr_resource; | |
d05d5744 | 3681 | p = encode_cinfo(p, &remove->rm_cinfo); |
1da177e4 | 3682 | } |
695e12f8 | 3683 | return nfserr; |
1da177e4 LT |
3684 | } |
3685 | ||
695e12f8 | 3686 | static __be32 |
b37ad28b | 3687 | nfsd4_encode_rename(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_rename *rename) |
1da177e4 | 3688 | { |
d0a381dd | 3689 | struct xdr_stream *xdr = &resp->xdr; |
bc749ca4 | 3690 | __be32 *p; |
1da177e4 LT |
3691 | |
3692 | if (!nfserr) { | |
d0a381dd BF |
3693 | p = xdr_reserve_space(xdr, 40); |
3694 | if (!p) | |
3695 | return nfserr_resource; | |
d05d5744 BF |
3696 | p = encode_cinfo(p, &rename->rn_sinfo); |
3697 | p = encode_cinfo(p, &rename->rn_tinfo); | |
1da177e4 | 3698 | } |
695e12f8 | 3699 | return nfserr; |
1da177e4 LT |
3700 | } |
3701 | ||
695e12f8 | 3702 | static __be32 |
d0a381dd | 3703 | nfsd4_do_encode_secinfo(struct xdr_stream *xdr, |
a77c806f | 3704 | __be32 nfserr, struct svc_export *exp) |
dcb488a3 | 3705 | { |
676e4ebd | 3706 | u32 i, nflavs, supported; |
4796f457 BF |
3707 | struct exp_flavor_info *flavs; |
3708 | struct exp_flavor_info def_flavs[2]; | |
676e4ebd CL |
3709 | __be32 *p, *flavorsp; |
3710 | static bool report = true; | |
dcb488a3 AA |
3711 | |
3712 | if (nfserr) | |
3713 | goto out; | |
d0a381dd | 3714 | nfserr = nfserr_resource; |
4796f457 BF |
3715 | if (exp->ex_nflavors) { |
3716 | flavs = exp->ex_flavors; | |
3717 | nflavs = exp->ex_nflavors; | |
3718 | } else { /* Handling of some defaults in absence of real secinfo: */ | |
3719 | flavs = def_flavs; | |
3720 | if (exp->ex_client->flavour->flavour == RPC_AUTH_UNIX) { | |
3721 | nflavs = 2; | |
3722 | flavs[0].pseudoflavor = RPC_AUTH_UNIX; | |
3723 | flavs[1].pseudoflavor = RPC_AUTH_NULL; | |
3724 | } else if (exp->ex_client->flavour->flavour == RPC_AUTH_GSS) { | |
3725 | nflavs = 1; | |
3726 | flavs[0].pseudoflavor | |
3727 | = svcauth_gss_flavor(exp->ex_client); | |
3728 | } else { | |
3729 | nflavs = 1; | |
3730 | flavs[0].pseudoflavor | |
3731 | = exp->ex_client->flavour->flavour; | |
3732 | } | |
3733 | } | |
3734 | ||
676e4ebd | 3735 | supported = 0; |
d0a381dd BF |
3736 | p = xdr_reserve_space(xdr, 4); |
3737 | if (!p) | |
3738 | goto out; | |
676e4ebd | 3739 | flavorsp = p++; /* to be backfilled later */ |
676e4ebd | 3740 | |
4796f457 | 3741 | for (i = 0; i < nflavs; i++) { |
676e4ebd | 3742 | rpc_authflavor_t pf = flavs[i].pseudoflavor; |
a77c806f | 3743 | struct rpcsec_gss_info info; |
dcb488a3 | 3744 | |
676e4ebd CL |
3745 | if (rpcauth_get_gssinfo(pf, &info) == 0) { |
3746 | supported++; | |
d0a381dd BF |
3747 | p = xdr_reserve_space(xdr, 4 + 4 + |
3748 | XDR_LEN(info.oid.len) + 4 + 4); | |
3749 | if (!p) | |
3750 | goto out; | |
c373b0a4 | 3751 | *p++ = cpu_to_be32(RPC_AUTH_GSS); |
0c0c267b | 3752 | p = xdr_encode_opaque(p, info.oid.data, info.oid.len); |
c373b0a4 BF |
3753 | *p++ = cpu_to_be32(info.qop); |
3754 | *p++ = cpu_to_be32(info.service); | |
676e4ebd CL |
3755 | } else if (pf < RPC_AUTH_MAXFLAVOR) { |
3756 | supported++; | |
d0a381dd BF |
3757 | p = xdr_reserve_space(xdr, 4); |
3758 | if (!p) | |
3759 | goto out; | |
c373b0a4 | 3760 | *p++ = cpu_to_be32(pf); |
676e4ebd CL |
3761 | } else { |
3762 | if (report) | |
3763 | pr_warn("NFS: SECINFO: security flavor %u " | |
3764 | "is not supported\n", pf); | |
dcb488a3 AA |
3765 | } |
3766 | } | |
a77c806f | 3767 | |
676e4ebd CL |
3768 | if (nflavs != supported) |
3769 | report = false; | |
3770 | *flavorsp = htonl(supported); | |
d0a381dd | 3771 | nfserr = 0; |
dcb488a3 AA |
3772 | out: |
3773 | if (exp) | |
3774 | exp_put(exp); | |
695e12f8 | 3775 | return nfserr; |
dcb488a3 AA |
3776 | } |
3777 | ||
22b6dee8 MJ |
3778 | static __be32 |
3779 | nfsd4_encode_secinfo(struct nfsd4_compoundres *resp, __be32 nfserr, | |
3780 | struct nfsd4_secinfo *secinfo) | |
3781 | { | |
d0a381dd BF |
3782 | struct xdr_stream *xdr = &resp->xdr; |
3783 | ||
3784 | return nfsd4_do_encode_secinfo(xdr, nfserr, secinfo->si_exp); | |
22b6dee8 MJ |
3785 | } |
3786 | ||
3787 | static __be32 | |
3788 | nfsd4_encode_secinfo_no_name(struct nfsd4_compoundres *resp, __be32 nfserr, | |
3789 | struct nfsd4_secinfo_no_name *secinfo) | |
3790 | { | |
d0a381dd BF |
3791 | struct xdr_stream *xdr = &resp->xdr; |
3792 | ||
3793 | return nfsd4_do_encode_secinfo(xdr, nfserr, secinfo->sin_exp); | |
22b6dee8 MJ |
3794 | } |
3795 | ||
1da177e4 LT |
3796 | /* |
3797 | * The SETATTR encode routine is special -- it always encodes a bitmap, | |
3798 | * regardless of the error status. | |
3799 | */ | |
695e12f8 | 3800 | static __be32 |
b37ad28b | 3801 | nfsd4_encode_setattr(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_setattr *setattr) |
1da177e4 | 3802 | { |
d0a381dd | 3803 | struct xdr_stream *xdr = &resp->xdr; |
bc749ca4 | 3804 | __be32 *p; |
1da177e4 | 3805 | |
d0a381dd BF |
3806 | p = xdr_reserve_space(xdr, 16); |
3807 | if (!p) | |
3808 | return nfserr_resource; | |
1da177e4 | 3809 | if (nfserr) { |
c373b0a4 BF |
3810 | *p++ = cpu_to_be32(3); |
3811 | *p++ = cpu_to_be32(0); | |
3812 | *p++ = cpu_to_be32(0); | |
3813 | *p++ = cpu_to_be32(0); | |
1da177e4 LT |
3814 | } |
3815 | else { | |
c373b0a4 BF |
3816 | *p++ = cpu_to_be32(3); |
3817 | *p++ = cpu_to_be32(setattr->sa_bmval[0]); | |
3818 | *p++ = cpu_to_be32(setattr->sa_bmval[1]); | |
3819 | *p++ = cpu_to_be32(setattr->sa_bmval[2]); | |
1da177e4 | 3820 | } |
695e12f8 | 3821 | return nfserr; |
1da177e4 LT |
3822 | } |
3823 | ||
695e12f8 | 3824 | static __be32 |
b37ad28b | 3825 | nfsd4_encode_setclientid(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_setclientid *scd) |
1da177e4 | 3826 | { |
d0a381dd | 3827 | struct xdr_stream *xdr = &resp->xdr; |
bc749ca4 | 3828 | __be32 *p; |
1da177e4 LT |
3829 | |
3830 | if (!nfserr) { | |
d0a381dd BF |
3831 | p = xdr_reserve_space(xdr, 8 + NFS4_VERIFIER_SIZE); |
3832 | if (!p) | |
3833 | return nfserr_resource; | |
0c0c267b BF |
3834 | p = xdr_encode_opaque_fixed(p, &scd->se_clientid, 8); |
3835 | p = xdr_encode_opaque_fixed(p, &scd->se_confirm, | |
3836 | NFS4_VERIFIER_SIZE); | |
1da177e4 LT |
3837 | } |
3838 | else if (nfserr == nfserr_clid_inuse) { | |
d0a381dd BF |
3839 | p = xdr_reserve_space(xdr, 8); |
3840 | if (!p) | |
3841 | return nfserr_resource; | |
c373b0a4 BF |
3842 | *p++ = cpu_to_be32(0); |
3843 | *p++ = cpu_to_be32(0); | |
1da177e4 | 3844 | } |
695e12f8 | 3845 | return nfserr; |
1da177e4 LT |
3846 | } |
3847 | ||
695e12f8 | 3848 | static __be32 |
b37ad28b | 3849 | nfsd4_encode_write(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_write *write) |
1da177e4 | 3850 | { |
d0a381dd | 3851 | struct xdr_stream *xdr = &resp->xdr; |
bc749ca4 | 3852 | __be32 *p; |
1da177e4 LT |
3853 | |
3854 | if (!nfserr) { | |
d0a381dd BF |
3855 | p = xdr_reserve_space(xdr, 16); |
3856 | if (!p) | |
3857 | return nfserr_resource; | |
c373b0a4 BF |
3858 | *p++ = cpu_to_be32(write->wr_bytes_written); |
3859 | *p++ = cpu_to_be32(write->wr_how_written); | |
0c0c267b BF |
3860 | p = xdr_encode_opaque_fixed(p, write->wr_verifier.data, |
3861 | NFS4_VERIFIER_SIZE); | |
1da177e4 | 3862 | } |
695e12f8 | 3863 | return nfserr; |
1da177e4 LT |
3864 | } |
3865 | ||
2db134eb | 3866 | static __be32 |
57b7b43b | 3867 | nfsd4_encode_exchange_id(struct nfsd4_compoundres *resp, __be32 nfserr, |
2db134eb AA |
3868 | struct nfsd4_exchange_id *exid) |
3869 | { | |
d0a381dd | 3870 | struct xdr_stream *xdr = &resp->xdr; |
bc749ca4 | 3871 | __be32 *p; |
0733d213 AA |
3872 | char *major_id; |
3873 | char *server_scope; | |
3874 | int major_id_sz; | |
3875 | int server_scope_sz; | |
ed941643 | 3876 | int status = 0; |
0733d213 AA |
3877 | uint64_t minor_id = 0; |
3878 | ||
3879 | if (nfserr) | |
3880 | return nfserr; | |
3881 | ||
3882 | major_id = utsname()->nodename; | |
3883 | major_id_sz = strlen(major_id); | |
3884 | server_scope = utsname()->nodename; | |
3885 | server_scope_sz = strlen(server_scope); | |
3886 | ||
d0a381dd | 3887 | p = xdr_reserve_space(xdr, |
0733d213 AA |
3888 | 8 /* eir_clientid */ + |
3889 | 4 /* eir_sequenceid */ + | |
3890 | 4 /* eir_flags */ + | |
a8bb84bc | 3891 | 4 /* spr_how */); |
d0a381dd BF |
3892 | if (!p) |
3893 | return nfserr_resource; | |
0733d213 | 3894 | |
0c0c267b | 3895 | p = xdr_encode_opaque_fixed(p, &exid->clientid, 8); |
c373b0a4 BF |
3896 | *p++ = cpu_to_be32(exid->seqid); |
3897 | *p++ = cpu_to_be32(exid->flags); | |
0733d213 | 3898 | |
c373b0a4 | 3899 | *p++ = cpu_to_be32(exid->spa_how); |
a8bb84bc | 3900 | |
57266a6e BF |
3901 | switch (exid->spa_how) { |
3902 | case SP4_NONE: | |
3903 | break; | |
3904 | case SP4_MACH_CRED: | |
3905 | /* spo_must_enforce bitmap: */ | |
ed941643 AE |
3906 | status = nfsd4_encode_bitmap(xdr, |
3907 | exid->spo_must_enforce[0], | |
3908 | exid->spo_must_enforce[1], | |
3909 | exid->spo_must_enforce[2]); | |
3910 | if (status) | |
3911 | goto out; | |
3912 | /* spo_must_allow bitmap: */ | |
3913 | status = nfsd4_encode_bitmap(xdr, | |
3914 | exid->spo_must_allow[0], | |
3915 | exid->spo_must_allow[1], | |
3916 | exid->spo_must_allow[2]); | |
3917 | if (status) | |
3918 | goto out; | |
57266a6e BF |
3919 | break; |
3920 | default: | |
3921 | WARN_ON_ONCE(1); | |
3922 | } | |
0733d213 | 3923 | |
d0a381dd | 3924 | p = xdr_reserve_space(xdr, |
a8bb84bc KM |
3925 | 8 /* so_minor_id */ + |
3926 | 4 /* so_major_id.len */ + | |
3927 | (XDR_QUADLEN(major_id_sz) * 4) + | |
3928 | 4 /* eir_server_scope.len */ + | |
3929 | (XDR_QUADLEN(server_scope_sz) * 4) + | |
3930 | 4 /* eir_server_impl_id.count (0) */); | |
d0a381dd BF |
3931 | if (!p) |
3932 | return nfserr_resource; | |
a8bb84bc | 3933 | |
0733d213 | 3934 | /* The server_owner struct */ |
b64c7f3b | 3935 | p = xdr_encode_hyper(p, minor_id); /* Minor id */ |
0733d213 | 3936 | /* major id */ |
0c0c267b | 3937 | p = xdr_encode_opaque(p, major_id, major_id_sz); |
0733d213 AA |
3938 | |
3939 | /* Server scope */ | |
0c0c267b | 3940 | p = xdr_encode_opaque(p, server_scope, server_scope_sz); |
0733d213 AA |
3941 | |
3942 | /* Implementation id */ | |
c373b0a4 | 3943 | *p++ = cpu_to_be32(0); /* zero length nfs_impl_id4 array */ |
0733d213 | 3944 | return 0; |
ed941643 AE |
3945 | out: |
3946 | return status; | |
2db134eb AA |
3947 | } |
3948 | ||
3949 | static __be32 | |
57b7b43b | 3950 | nfsd4_encode_create_session(struct nfsd4_compoundres *resp, __be32 nfserr, |
2db134eb AA |
3951 | struct nfsd4_create_session *sess) |
3952 | { | |
d0a381dd | 3953 | struct xdr_stream *xdr = &resp->xdr; |
bc749ca4 | 3954 | __be32 *p; |
ec6b5d7b AA |
3955 | |
3956 | if (nfserr) | |
3957 | return nfserr; | |
3958 | ||
d0a381dd BF |
3959 | p = xdr_reserve_space(xdr, 24); |
3960 | if (!p) | |
3961 | return nfserr_resource; | |
0c0c267b BF |
3962 | p = xdr_encode_opaque_fixed(p, sess->sessionid.data, |
3963 | NFS4_MAX_SESSIONID_LEN); | |
c373b0a4 BF |
3964 | *p++ = cpu_to_be32(sess->seqid); |
3965 | *p++ = cpu_to_be32(sess->flags); | |
ec6b5d7b | 3966 | |
d0a381dd BF |
3967 | p = xdr_reserve_space(xdr, 28); |
3968 | if (!p) | |
3969 | return nfserr_resource; | |
c373b0a4 BF |
3970 | *p++ = cpu_to_be32(0); /* headerpadsz */ |
3971 | *p++ = cpu_to_be32(sess->fore_channel.maxreq_sz); | |
3972 | *p++ = cpu_to_be32(sess->fore_channel.maxresp_sz); | |
3973 | *p++ = cpu_to_be32(sess->fore_channel.maxresp_cached); | |
3974 | *p++ = cpu_to_be32(sess->fore_channel.maxops); | |
3975 | *p++ = cpu_to_be32(sess->fore_channel.maxreqs); | |
3976 | *p++ = cpu_to_be32(sess->fore_channel.nr_rdma_attrs); | |
ec6b5d7b AA |
3977 | |
3978 | if (sess->fore_channel.nr_rdma_attrs) { | |
d0a381dd BF |
3979 | p = xdr_reserve_space(xdr, 4); |
3980 | if (!p) | |
3981 | return nfserr_resource; | |
c373b0a4 | 3982 | *p++ = cpu_to_be32(sess->fore_channel.rdma_attrs); |
ec6b5d7b AA |
3983 | } |
3984 | ||
d0a381dd BF |
3985 | p = xdr_reserve_space(xdr, 28); |
3986 | if (!p) | |
3987 | return nfserr_resource; | |
c373b0a4 BF |
3988 | *p++ = cpu_to_be32(0); /* headerpadsz */ |
3989 | *p++ = cpu_to_be32(sess->back_channel.maxreq_sz); | |
3990 | *p++ = cpu_to_be32(sess->back_channel.maxresp_sz); | |
3991 | *p++ = cpu_to_be32(sess->back_channel.maxresp_cached); | |
3992 | *p++ = cpu_to_be32(sess->back_channel.maxops); | |
3993 | *p++ = cpu_to_be32(sess->back_channel.maxreqs); | |
3994 | *p++ = cpu_to_be32(sess->back_channel.nr_rdma_attrs); | |
ec6b5d7b AA |
3995 | |
3996 | if (sess->back_channel.nr_rdma_attrs) { | |
d0a381dd BF |
3997 | p = xdr_reserve_space(xdr, 4); |
3998 | if (!p) | |
3999 | return nfserr_resource; | |
c373b0a4 | 4000 | *p++ = cpu_to_be32(sess->back_channel.rdma_attrs); |
ec6b5d7b AA |
4001 | } |
4002 | return 0; | |
2db134eb AA |
4003 | } |
4004 | ||
c47d832b | 4005 | static __be32 |
57b7b43b | 4006 | nfsd4_encode_sequence(struct nfsd4_compoundres *resp, __be32 nfserr, |
2db134eb AA |
4007 | struct nfsd4_sequence *seq) |
4008 | { | |
d0a381dd | 4009 | struct xdr_stream *xdr = &resp->xdr; |
bc749ca4 | 4010 | __be32 *p; |
b85d4c01 BH |
4011 | |
4012 | if (nfserr) | |
4013 | return nfserr; | |
4014 | ||
d0a381dd BF |
4015 | p = xdr_reserve_space(xdr, NFS4_MAX_SESSIONID_LEN + 20); |
4016 | if (!p) | |
4017 | return nfserr_resource; | |
0c0c267b BF |
4018 | p = xdr_encode_opaque_fixed(p, seq->sessionid.data, |
4019 | NFS4_MAX_SESSIONID_LEN); | |
c373b0a4 BF |
4020 | *p++ = cpu_to_be32(seq->seqid); |
4021 | *p++ = cpu_to_be32(seq->slotid); | |
b7d7ca35 | 4022 | /* Note slotid's are numbered from zero: */ |
c373b0a4 BF |
4023 | *p++ = cpu_to_be32(seq->maxslots - 1); /* sr_highest_slotid */ |
4024 | *p++ = cpu_to_be32(seq->maxslots - 1); /* sr_target_highest_slotid */ | |
4025 | *p++ = cpu_to_be32(seq->status_flags); | |
b85d4c01 | 4026 | |
f5236013 | 4027 | resp->cstate.data_offset = xdr->buf->len; /* DRC cache data pointer */ |
b85d4c01 | 4028 | return 0; |
2db134eb AA |
4029 | } |
4030 | ||
2355c596 | 4031 | static __be32 |
57b7b43b | 4032 | nfsd4_encode_test_stateid(struct nfsd4_compoundres *resp, __be32 nfserr, |
17456804 BS |
4033 | struct nfsd4_test_stateid *test_stateid) |
4034 | { | |
d0a381dd | 4035 | struct xdr_stream *xdr = &resp->xdr; |
03cfb420 | 4036 | struct nfsd4_test_stateid_id *stateid, *next; |
17456804 | 4037 | __be32 *p; |
17456804 | 4038 | |
a11fcce1 BF |
4039 | if (nfserr) |
4040 | return nfserr; | |
4041 | ||
d0a381dd BF |
4042 | p = xdr_reserve_space(xdr, 4 + (4 * test_stateid->ts_num_ids)); |
4043 | if (!p) | |
4044 | return nfserr_resource; | |
17456804 | 4045 | *p++ = htonl(test_stateid->ts_num_ids); |
17456804 | 4046 | |
03cfb420 | 4047 | list_for_each_entry_safe(stateid, next, &test_stateid->ts_stateid_list, ts_id_list) { |
02f5fde5 | 4048 | *p++ = stateid->ts_id_status; |
17456804 | 4049 | } |
17456804 BS |
4050 | |
4051 | return nfserr; | |
4052 | } | |
4053 | ||
9cf514cc CH |
4054 | #ifdef CONFIG_NFSD_PNFS |
4055 | static __be32 | |
4056 | nfsd4_encode_getdeviceinfo(struct nfsd4_compoundres *resp, __be32 nfserr, | |
4057 | struct nfsd4_getdeviceinfo *gdev) | |
4058 | { | |
4059 | struct xdr_stream *xdr = &resp->xdr; | |
4060 | const struct nfsd4_layout_ops *ops = | |
4061 | nfsd4_layout_ops[gdev->gd_layout_type]; | |
4062 | u32 starting_len = xdr->buf->len, needed_len; | |
4063 | __be32 *p; | |
4064 | ||
bec782b4 | 4065 | dprintk("%s: err %d\n", __func__, be32_to_cpu(nfserr)); |
9cf514cc CH |
4066 | if (nfserr) |
4067 | goto out; | |
4068 | ||
4069 | nfserr = nfserr_resource; | |
4070 | p = xdr_reserve_space(xdr, 4); | |
4071 | if (!p) | |
4072 | goto out; | |
4073 | ||
4074 | *p++ = cpu_to_be32(gdev->gd_layout_type); | |
4075 | ||
4076 | /* If maxcount is 0 then just update notifications */ | |
4077 | if (gdev->gd_maxcount != 0) { | |
4078 | nfserr = ops->encode_getdeviceinfo(xdr, gdev); | |
4079 | if (nfserr) { | |
4080 | /* | |
4081 | * We don't bother to burden the layout drivers with | |
4082 | * enforcing gd_maxcount, just tell the client to | |
4083 | * come back with a bigger buffer if it's not enough. | |
4084 | */ | |
4085 | if (xdr->buf->len + 4 > gdev->gd_maxcount) | |
4086 | goto toosmall; | |
4087 | goto out; | |
4088 | } | |
4089 | } | |
4090 | ||
4091 | nfserr = nfserr_resource; | |
4092 | if (gdev->gd_notify_types) { | |
4093 | p = xdr_reserve_space(xdr, 4 + 4); | |
4094 | if (!p) | |
4095 | goto out; | |
4096 | *p++ = cpu_to_be32(1); /* bitmap length */ | |
4097 | *p++ = cpu_to_be32(gdev->gd_notify_types); | |
4098 | } else { | |
4099 | p = xdr_reserve_space(xdr, 4); | |
4100 | if (!p) | |
4101 | goto out; | |
4102 | *p++ = 0; | |
4103 | } | |
4104 | ||
4105 | nfserr = 0; | |
4106 | out: | |
4107 | kfree(gdev->gd_device); | |
4108 | dprintk("%s: done: %d\n", __func__, be32_to_cpu(nfserr)); | |
4109 | return nfserr; | |
4110 | ||
4111 | toosmall: | |
4112 | dprintk("%s: maxcount too small\n", __func__); | |
4113 | needed_len = xdr->buf->len + 4 /* notifications */; | |
4114 | xdr_truncate_encode(xdr, starting_len); | |
4115 | p = xdr_reserve_space(xdr, 4); | |
4116 | if (!p) { | |
4117 | nfserr = nfserr_resource; | |
4118 | } else { | |
4119 | *p++ = cpu_to_be32(needed_len); | |
4120 | nfserr = nfserr_toosmall; | |
4121 | } | |
4122 | goto out; | |
4123 | } | |
4124 | ||
4125 | static __be32 | |
4126 | nfsd4_encode_layoutget(struct nfsd4_compoundres *resp, __be32 nfserr, | |
4127 | struct nfsd4_layoutget *lgp) | |
4128 | { | |
4129 | struct xdr_stream *xdr = &resp->xdr; | |
4130 | const struct nfsd4_layout_ops *ops = | |
4131 | nfsd4_layout_ops[lgp->lg_layout_type]; | |
4132 | __be32 *p; | |
4133 | ||
4134 | dprintk("%s: err %d\n", __func__, nfserr); | |
4135 | if (nfserr) | |
4136 | goto out; | |
4137 | ||
4138 | nfserr = nfserr_resource; | |
4139 | p = xdr_reserve_space(xdr, 36 + sizeof(stateid_opaque_t)); | |
4140 | if (!p) | |
4141 | goto out; | |
4142 | ||
4143 | *p++ = cpu_to_be32(1); /* we always set return-on-close */ | |
4144 | *p++ = cpu_to_be32(lgp->lg_sid.si_generation); | |
4145 | p = xdr_encode_opaque_fixed(p, &lgp->lg_sid.si_opaque, | |
4146 | sizeof(stateid_opaque_t)); | |
4147 | ||
4148 | *p++ = cpu_to_be32(1); /* we always return a single layout */ | |
4149 | p = xdr_encode_hyper(p, lgp->lg_seg.offset); | |
4150 | p = xdr_encode_hyper(p, lgp->lg_seg.length); | |
4151 | *p++ = cpu_to_be32(lgp->lg_seg.iomode); | |
4152 | *p++ = cpu_to_be32(lgp->lg_layout_type); | |
4153 | ||
4154 | nfserr = ops->encode_layoutget(xdr, lgp); | |
4155 | out: | |
4156 | kfree(lgp->lg_content); | |
4157 | return nfserr; | |
4158 | } | |
4159 | ||
4160 | static __be32 | |
4161 | nfsd4_encode_layoutcommit(struct nfsd4_compoundres *resp, __be32 nfserr, | |
4162 | struct nfsd4_layoutcommit *lcp) | |
4163 | { | |
4164 | struct xdr_stream *xdr = &resp->xdr; | |
4165 | __be32 *p; | |
4166 | ||
4167 | if (nfserr) | |
4168 | return nfserr; | |
4169 | ||
4170 | p = xdr_reserve_space(xdr, 4); | |
4171 | if (!p) | |
4172 | return nfserr_resource; | |
4173 | *p++ = cpu_to_be32(lcp->lc_size_chg); | |
4174 | if (lcp->lc_size_chg) { | |
4175 | p = xdr_reserve_space(xdr, 8); | |
4176 | if (!p) | |
4177 | return nfserr_resource; | |
4178 | p = xdr_encode_hyper(p, lcp->lc_newsize); | |
4179 | } | |
4180 | ||
4181 | return nfs_ok; | |
4182 | } | |
4183 | ||
4184 | static __be32 | |
4185 | nfsd4_encode_layoutreturn(struct nfsd4_compoundres *resp, __be32 nfserr, | |
4186 | struct nfsd4_layoutreturn *lrp) | |
4187 | { | |
4188 | struct xdr_stream *xdr = &resp->xdr; | |
4189 | __be32 *p; | |
4190 | ||
4191 | if (nfserr) | |
4192 | return nfserr; | |
4193 | ||
4194 | p = xdr_reserve_space(xdr, 4); | |
4195 | if (!p) | |
4196 | return nfserr_resource; | |
4197 | *p++ = cpu_to_be32(lrp->lrs_present); | |
4198 | if (lrp->lrs_present) | |
376675da | 4199 | return nfsd4_encode_stateid(xdr, &lrp->lr_sid); |
9cf514cc CH |
4200 | return nfs_ok; |
4201 | } | |
4202 | #endif /* CONFIG_NFSD_PNFS */ | |
4203 | ||
24bab491 AS |
4204 | static __be32 |
4205 | nfsd4_encode_seek(struct nfsd4_compoundres *resp, __be32 nfserr, | |
4206 | struct nfsd4_seek *seek) | |
4207 | { | |
4208 | __be32 *p; | |
4209 | ||
4210 | if (nfserr) | |
4211 | return nfserr; | |
4212 | ||
4213 | p = xdr_reserve_space(&resp->xdr, 4 + 8); | |
4214 | *p++ = cpu_to_be32(seek->seek_eof); | |
4215 | p = xdr_encode_hyper(p, seek->seek_pos); | |
4216 | ||
4217 | return nfserr; | |
4218 | } | |
4219 | ||
695e12f8 BH |
4220 | static __be32 |
4221 | nfsd4_encode_noop(struct nfsd4_compoundres *resp, __be32 nfserr, void *p) | |
4222 | { | |
4223 | return nfserr; | |
4224 | } | |
4225 | ||
4226 | typedef __be32(* nfsd4_enc)(struct nfsd4_compoundres *, __be32, void *); | |
4227 | ||
2db134eb AA |
4228 | /* |
4229 | * Note: nfsd4_enc_ops vector is shared for v4.0 and v4.1 | |
4230 | * since we don't need to filter out obsolete ops as this is | |
4231 | * done in the decoding phase. | |
4232 | */ | |
695e12f8 | 4233 | static nfsd4_enc nfsd4_enc_ops[] = { |
ad1060c8 BF |
4234 | [OP_ACCESS] = (nfsd4_enc)nfsd4_encode_access, |
4235 | [OP_CLOSE] = (nfsd4_enc)nfsd4_encode_close, | |
4236 | [OP_COMMIT] = (nfsd4_enc)nfsd4_encode_commit, | |
4237 | [OP_CREATE] = (nfsd4_enc)nfsd4_encode_create, | |
4238 | [OP_DELEGPURGE] = (nfsd4_enc)nfsd4_encode_noop, | |
4239 | [OP_DELEGRETURN] = (nfsd4_enc)nfsd4_encode_noop, | |
4240 | [OP_GETATTR] = (nfsd4_enc)nfsd4_encode_getattr, | |
4241 | [OP_GETFH] = (nfsd4_enc)nfsd4_encode_getfh, | |
4242 | [OP_LINK] = (nfsd4_enc)nfsd4_encode_link, | |
4243 | [OP_LOCK] = (nfsd4_enc)nfsd4_encode_lock, | |
4244 | [OP_LOCKT] = (nfsd4_enc)nfsd4_encode_lockt, | |
4245 | [OP_LOCKU] = (nfsd4_enc)nfsd4_encode_locku, | |
4246 | [OP_LOOKUP] = (nfsd4_enc)nfsd4_encode_noop, | |
4247 | [OP_LOOKUPP] = (nfsd4_enc)nfsd4_encode_noop, | |
4248 | [OP_NVERIFY] = (nfsd4_enc)nfsd4_encode_noop, | |
4249 | [OP_OPEN] = (nfsd4_enc)nfsd4_encode_open, | |
84f09f46 | 4250 | [OP_OPENATTR] = (nfsd4_enc)nfsd4_encode_noop, |
ad1060c8 BF |
4251 | [OP_OPEN_CONFIRM] = (nfsd4_enc)nfsd4_encode_open_confirm, |
4252 | [OP_OPEN_DOWNGRADE] = (nfsd4_enc)nfsd4_encode_open_downgrade, | |
4253 | [OP_PUTFH] = (nfsd4_enc)nfsd4_encode_noop, | |
4254 | [OP_PUTPUBFH] = (nfsd4_enc)nfsd4_encode_noop, | |
4255 | [OP_PUTROOTFH] = (nfsd4_enc)nfsd4_encode_noop, | |
4256 | [OP_READ] = (nfsd4_enc)nfsd4_encode_read, | |
4257 | [OP_READDIR] = (nfsd4_enc)nfsd4_encode_readdir, | |
4258 | [OP_READLINK] = (nfsd4_enc)nfsd4_encode_readlink, | |
4259 | [OP_REMOVE] = (nfsd4_enc)nfsd4_encode_remove, | |
4260 | [OP_RENAME] = (nfsd4_enc)nfsd4_encode_rename, | |
4261 | [OP_RENEW] = (nfsd4_enc)nfsd4_encode_noop, | |
4262 | [OP_RESTOREFH] = (nfsd4_enc)nfsd4_encode_noop, | |
4263 | [OP_SAVEFH] = (nfsd4_enc)nfsd4_encode_noop, | |
4264 | [OP_SECINFO] = (nfsd4_enc)nfsd4_encode_secinfo, | |
4265 | [OP_SETATTR] = (nfsd4_enc)nfsd4_encode_setattr, | |
4266 | [OP_SETCLIENTID] = (nfsd4_enc)nfsd4_encode_setclientid, | |
4267 | [OP_SETCLIENTID_CONFIRM] = (nfsd4_enc)nfsd4_encode_noop, | |
4268 | [OP_VERIFY] = (nfsd4_enc)nfsd4_encode_noop, | |
4269 | [OP_WRITE] = (nfsd4_enc)nfsd4_encode_write, | |
4270 | [OP_RELEASE_LOCKOWNER] = (nfsd4_enc)nfsd4_encode_noop, | |
2db134eb AA |
4271 | |
4272 | /* NFSv4.1 operations */ | |
4273 | [OP_BACKCHANNEL_CTL] = (nfsd4_enc)nfsd4_encode_noop, | |
1d1bc8f2 | 4274 | [OP_BIND_CONN_TO_SESSION] = (nfsd4_enc)nfsd4_encode_bind_conn_to_session, |
2db134eb AA |
4275 | [OP_EXCHANGE_ID] = (nfsd4_enc)nfsd4_encode_exchange_id, |
4276 | [OP_CREATE_SESSION] = (nfsd4_enc)nfsd4_encode_create_session, | |
43212cc7 KM |
4277 | [OP_DESTROY_SESSION] = (nfsd4_enc)nfsd4_encode_noop, |
4278 | [OP_FREE_STATEID] = (nfsd4_enc)nfsd4_encode_noop, | |
2db134eb | 4279 | [OP_GET_DIR_DELEGATION] = (nfsd4_enc)nfsd4_encode_noop, |
9cf514cc CH |
4280 | #ifdef CONFIG_NFSD_PNFS |
4281 | [OP_GETDEVICEINFO] = (nfsd4_enc)nfsd4_encode_getdeviceinfo, | |
4282 | [OP_GETDEVICELIST] = (nfsd4_enc)nfsd4_encode_noop, | |
4283 | [OP_LAYOUTCOMMIT] = (nfsd4_enc)nfsd4_encode_layoutcommit, | |
4284 | [OP_LAYOUTGET] = (nfsd4_enc)nfsd4_encode_layoutget, | |
4285 | [OP_LAYOUTRETURN] = (nfsd4_enc)nfsd4_encode_layoutreturn, | |
4286 | #else | |
2db134eb AA |
4287 | [OP_GETDEVICEINFO] = (nfsd4_enc)nfsd4_encode_noop, |
4288 | [OP_GETDEVICELIST] = (nfsd4_enc)nfsd4_encode_noop, | |
4289 | [OP_LAYOUTCOMMIT] = (nfsd4_enc)nfsd4_encode_noop, | |
4290 | [OP_LAYOUTGET] = (nfsd4_enc)nfsd4_encode_noop, | |
4291 | [OP_LAYOUTRETURN] = (nfsd4_enc)nfsd4_encode_noop, | |
9cf514cc | 4292 | #endif |
22b6dee8 | 4293 | [OP_SECINFO_NO_NAME] = (nfsd4_enc)nfsd4_encode_secinfo_no_name, |
2db134eb AA |
4294 | [OP_SEQUENCE] = (nfsd4_enc)nfsd4_encode_sequence, |
4295 | [OP_SET_SSV] = (nfsd4_enc)nfsd4_encode_noop, | |
17456804 | 4296 | [OP_TEST_STATEID] = (nfsd4_enc)nfsd4_encode_test_stateid, |
2db134eb AA |
4297 | [OP_WANT_DELEGATION] = (nfsd4_enc)nfsd4_encode_noop, |
4298 | [OP_DESTROY_CLIENTID] = (nfsd4_enc)nfsd4_encode_noop, | |
4299 | [OP_RECLAIM_COMPLETE] = (nfsd4_enc)nfsd4_encode_noop, | |
87a15a80 AS |
4300 | |
4301 | /* NFSv4.2 operations */ | |
4302 | [OP_ALLOCATE] = (nfsd4_enc)nfsd4_encode_noop, | |
4303 | [OP_COPY] = (nfsd4_enc)nfsd4_encode_noop, | |
4304 | [OP_COPY_NOTIFY] = (nfsd4_enc)nfsd4_encode_noop, | |
4305 | [OP_DEALLOCATE] = (nfsd4_enc)nfsd4_encode_noop, | |
4306 | [OP_IO_ADVISE] = (nfsd4_enc)nfsd4_encode_noop, | |
4307 | [OP_LAYOUTERROR] = (nfsd4_enc)nfsd4_encode_noop, | |
4308 | [OP_LAYOUTSTATS] = (nfsd4_enc)nfsd4_encode_noop, | |
4309 | [OP_OFFLOAD_CANCEL] = (nfsd4_enc)nfsd4_encode_noop, | |
4310 | [OP_OFFLOAD_STATUS] = (nfsd4_enc)nfsd4_encode_noop, | |
4311 | [OP_READ_PLUS] = (nfsd4_enc)nfsd4_encode_noop, | |
24bab491 | 4312 | [OP_SEEK] = (nfsd4_enc)nfsd4_encode_seek, |
87a15a80 | 4313 | [OP_WRITE_SAME] = (nfsd4_enc)nfsd4_encode_noop, |
ffa0160a | 4314 | [OP_CLONE] = (nfsd4_enc)nfsd4_encode_noop, |
695e12f8 BH |
4315 | }; |
4316 | ||
496c262c | 4317 | /* |
a8095f7e BF |
4318 | * Calculate whether we still have space to encode repsize bytes. |
4319 | * There are two considerations: | |
4320 | * - For NFS versions >=4.1, the size of the reply must stay within | |
4321 | * session limits | |
4322 | * - For all NFS versions, we must stay within limited preallocated | |
4323 | * buffer space. | |
496c262c | 4324 | * |
a8095f7e BF |
4325 | * This is called before the operation is processed, so can only provide |
4326 | * an upper estimate. For some nonidempotent operations (such as | |
4327 | * getattr), it's not necessarily a problem if that estimate is wrong, | |
4328 | * as we can fail it after processing without significant side effects. | |
496c262c | 4329 | */ |
a8095f7e | 4330 | __be32 nfsd4_check_resp_size(struct nfsd4_compoundres *resp, u32 respsize) |
496c262c | 4331 | { |
67492c99 | 4332 | struct xdr_buf *buf = &resp->rqstp->rq_res; |
47ee5298 | 4333 | struct nfsd4_slot *slot = resp->cstate.slot; |
496c262c | 4334 | |
47ee5298 BF |
4335 | if (buf->len + respsize <= buf->buflen) |
4336 | return nfs_ok; | |
4337 | if (!nfsd4_has_session(&resp->cstate)) | |
ea8d7720 | 4338 | return nfserr_resource; |
47ee5298 BF |
4339 | if (slot->sl_flags & NFSD4_SLOT_CACHETHIS) { |
4340 | WARN_ON_ONCE(1); | |
4341 | return nfserr_rep_too_big_to_cache; | |
ea8d7720 | 4342 | } |
47ee5298 | 4343 | return nfserr_rep_too_big; |
496c262c AA |
4344 | } |
4345 | ||
1da177e4 LT |
4346 | void |
4347 | nfsd4_encode_operation(struct nfsd4_compoundres *resp, struct nfsd4_op *op) | |
4348 | { | |
082d4bd7 | 4349 | struct xdr_stream *xdr = &resp->xdr; |
9411b1d4 | 4350 | struct nfs4_stateowner *so = resp->cstate.replay_owner; |
5f4ab945 | 4351 | struct svc_rqst *rqstp = resp->rqstp; |
082d4bd7 | 4352 | int post_err_offset; |
07d1f802 | 4353 | nfsd4_enc encoder; |
bc749ca4 | 4354 | __be32 *p; |
1da177e4 | 4355 | |
d0a381dd BF |
4356 | p = xdr_reserve_space(xdr, 8); |
4357 | if (!p) { | |
4358 | WARN_ON_ONCE(1); | |
4359 | return; | |
4360 | } | |
c373b0a4 | 4361 | *p++ = cpu_to_be32(op->opnum); |
082d4bd7 | 4362 | post_err_offset = xdr->buf->len; |
1da177e4 | 4363 | |
695e12f8 BH |
4364 | if (op->opnum == OP_ILLEGAL) |
4365 | goto status; | |
4366 | BUG_ON(op->opnum < 0 || op->opnum >= ARRAY_SIZE(nfsd4_enc_ops) || | |
4367 | !nfsd4_enc_ops[op->opnum]); | |
07d1f802 BF |
4368 | encoder = nfsd4_enc_ops[op->opnum]; |
4369 | op->status = encoder(resp, op->status, &op->u); | |
2825a7f9 BF |
4370 | xdr_commit_encode(xdr); |
4371 | ||
067e1ace | 4372 | /* nfsd4_check_resp_size guarantees enough room for error status */ |
5f4ab945 BF |
4373 | if (!op->status) { |
4374 | int space_needed = 0; | |
4375 | if (!nfsd4_last_compound_op(rqstp)) | |
4376 | space_needed = COMPOUND_ERR_SLACK_SPACE; | |
4377 | op->status = nfsd4_check_resp_size(resp, space_needed); | |
4378 | } | |
c8f13d97 BF |
4379 | if (op->status == nfserr_resource && nfsd4_has_session(&resp->cstate)) { |
4380 | struct nfsd4_slot *slot = resp->cstate.slot; | |
4381 | ||
4382 | if (slot->sl_flags & NFSD4_SLOT_CACHETHIS) | |
4383 | op->status = nfserr_rep_too_big_to_cache; | |
4384 | else | |
4385 | op->status = nfserr_rep_too_big; | |
4386 | } | |
07d1f802 BF |
4387 | if (op->status == nfserr_resource || |
4388 | op->status == nfserr_rep_too_big || | |
4389 | op->status == nfserr_rep_too_big_to_cache) { | |
4390 | /* | |
4391 | * The operation may have already been encoded or | |
4392 | * partially encoded. No op returns anything additional | |
4393 | * in the case of one of these three errors, so we can | |
4394 | * just truncate back to after the status. But it's a | |
4395 | * bug if we had to do this on a non-idempotent op: | |
4396 | */ | |
4397 | warn_on_nonidempotent_op(op); | |
082d4bd7 | 4398 | xdr_truncate_encode(xdr, post_err_offset); |
07d1f802 | 4399 | } |
9411b1d4 | 4400 | if (so) { |
082d4bd7 BF |
4401 | int len = xdr->buf->len - post_err_offset; |
4402 | ||
9411b1d4 | 4403 | so->so_replay.rp_status = op->status; |
082d4bd7 BF |
4404 | so->so_replay.rp_buflen = len; |
4405 | read_bytes_from_xdr_buf(xdr->buf, post_err_offset, | |
4406 | so->so_replay.rp_buf, len); | |
9411b1d4 | 4407 | } |
695e12f8 | 4408 | status: |
082d4bd7 BF |
4409 | /* Note that op->status is already in network byte order: */ |
4410 | write_bytes_to_xdr_buf(xdr->buf, post_err_offset - 4, &op->status, 4); | |
1da177e4 LT |
4411 | } |
4412 | ||
4413 | /* | |
4414 | * Encode the reply stored in the stateowner reply cache | |
4415 | * | |
4416 | * XDR note: do not encode rp->rp_buflen: the buffer contains the | |
4417 | * previously sent already encoded operation. | |
1da177e4 LT |
4418 | */ |
4419 | void | |
d0a381dd | 4420 | nfsd4_encode_replay(struct xdr_stream *xdr, struct nfsd4_op *op) |
1da177e4 | 4421 | { |
bc749ca4 | 4422 | __be32 *p; |
1da177e4 LT |
4423 | struct nfs4_replay *rp = op->replay; |
4424 | ||
4425 | BUG_ON(!rp); | |
4426 | ||
d0a381dd BF |
4427 | p = xdr_reserve_space(xdr, 8 + rp->rp_buflen); |
4428 | if (!p) { | |
4429 | WARN_ON_ONCE(1); | |
4430 | return; | |
4431 | } | |
c373b0a4 | 4432 | *p++ = cpu_to_be32(op->opnum); |
1da177e4 | 4433 | *p++ = rp->rp_status; /* already xdr'ed */ |
1da177e4 | 4434 | |
0c0c267b | 4435 | p = xdr_encode_opaque_fixed(p, rp->rp_buf, rp->rp_buflen); |
1da177e4 LT |
4436 | } |
4437 | ||
1da177e4 | 4438 | int |
2ebbc012 | 4439 | nfs4svc_encode_voidres(struct svc_rqst *rqstp, __be32 *p, void *dummy) |
1da177e4 LT |
4440 | { |
4441 | return xdr_ressize_check(rqstp, p); | |
4442 | } | |
4443 | ||
3e98abff | 4444 | int nfsd4_release_compoundargs(void *rq, __be32 *p, void *resp) |
1da177e4 | 4445 | { |
3e98abff BF |
4446 | struct svc_rqst *rqstp = rq; |
4447 | struct nfsd4_compoundargs *args = rqstp->rq_argp; | |
4448 | ||
1da177e4 LT |
4449 | if (args->ops != args->iops) { |
4450 | kfree(args->ops); | |
4451 | args->ops = args->iops; | |
4452 | } | |
f99d49ad JJ |
4453 | kfree(args->tmpp); |
4454 | args->tmpp = NULL; | |
1da177e4 | 4455 | while (args->to_free) { |
d5e23383 | 4456 | struct svcxdr_tmpbuf *tb = args->to_free; |
1da177e4 | 4457 | args->to_free = tb->next; |
1da177e4 LT |
4458 | kfree(tb); |
4459 | } | |
3e98abff | 4460 | return 1; |
1da177e4 LT |
4461 | } |
4462 | ||
4463 | int | |
2ebbc012 | 4464 | nfs4svc_decode_compoundargs(struct svc_rqst *rqstp, __be32 *p, struct nfsd4_compoundargs *args) |
1da177e4 | 4465 | { |
e874f9f8 JL |
4466 | if (rqstp->rq_arg.head[0].iov_len % 4) { |
4467 | /* client is nuts */ | |
4468 | dprintk("%s: compound not properly padded! (peeraddr=%pISc xid=0x%x)", | |
4469 | __func__, svc_addr(rqstp), be32_to_cpu(rqstp->rq_xid)); | |
4470 | return 0; | |
4471 | } | |
1da177e4 LT |
4472 | args->p = p; |
4473 | args->end = rqstp->rq_arg.head[0].iov_base + rqstp->rq_arg.head[0].iov_len; | |
4474 | args->pagelist = rqstp->rq_arg.pages; | |
4475 | args->pagelen = rqstp->rq_arg.page_len; | |
4476 | args->tmpp = NULL; | |
4477 | args->to_free = NULL; | |
4478 | args->ops = args->iops; | |
4479 | args->rqstp = rqstp; | |
4480 | ||
3e98abff | 4481 | return !nfsd4_decode_compound(args); |
1da177e4 LT |
4482 | } |
4483 | ||
4484 | int | |
2ebbc012 | 4485 | nfs4svc_encode_compoundres(struct svc_rqst *rqstp, __be32 *p, struct nfsd4_compoundres *resp) |
1da177e4 LT |
4486 | { |
4487 | /* | |
4488 | * All that remains is to write the tag and operation count... | |
4489 | */ | |
6ac90391 BF |
4490 | struct xdr_buf *buf = resp->xdr.buf; |
4491 | ||
4492 | WARN_ON_ONCE(buf->len != buf->head[0].iov_len + buf->page_len + | |
4493 | buf->tail[0].iov_len); | |
dd97fdde | 4494 | |
2825a7f9 BF |
4495 | rqstp->rq_next_page = resp->xdr.page_ptr + 1; |
4496 | ||
1da177e4 LT |
4497 | p = resp->tagp; |
4498 | *p++ = htonl(resp->taglen); | |
4499 | memcpy(p, resp->tag, resp->taglen); | |
4500 | p += XDR_QUADLEN(resp->taglen); | |
4501 | *p++ = htonl(resp->opcnt); | |
4502 | ||
b607664e | 4503 | nfsd4_sequence_done(resp); |
1da177e4 LT |
4504 | return 1; |
4505 | } | |
4506 | ||
4507 | /* | |
4508 | * Local variables: | |
4509 | * c-basic-offset: 8 | |
4510 | * End: | |
4511 | */ |