Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /* |
2 | * fs/nfsd/nfs4proc.c | |
3 | * | |
4 | * Server-side procedures for NFSv4. | |
5 | * | |
6 | * Copyright (c) 2002 The Regents of the University of Michigan. | |
7 | * All rights reserved. | |
8 | * | |
9 | * Kendrick Smith <kmsmith@umich.edu> | |
10 | * Andy Adamson <andros@umich.edu> | |
11 | * | |
12 | * Redistribution and use in source and binary forms, with or without | |
13 | * modification, are permitted provided that the following conditions | |
14 | * are met: | |
15 | * | |
16 | * 1. Redistributions of source code must retain the above copyright | |
17 | * notice, this list of conditions and the following disclaimer. | |
18 | * 2. Redistributions in binary form must reproduce the above copyright | |
19 | * notice, this list of conditions and the following disclaimer in the | |
20 | * documentation and/or other materials provided with the distribution. | |
21 | * 3. Neither the name of the University nor the names of its | |
22 | * contributors may be used to endorse or promote products derived | |
23 | * from this software without specific prior written permission. | |
24 | * | |
25 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED | |
26 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF | |
27 | * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE | |
28 | * DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | |
29 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR | |
30 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF | |
31 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR | |
32 | * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF | |
33 | * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING | |
34 | * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS | |
35 | * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
1da177e4 LT |
36 | */ |
37 | ||
38 | #include <linux/param.h> | |
39 | #include <linux/major.h> | |
40 | #include <linux/slab.h> | |
7e06b7f9 | 41 | #include <linux/file.h> |
1da177e4 LT |
42 | |
43 | #include <linux/sunrpc/svc.h> | |
44 | #include <linux/nfsd/nfsd.h> | |
45 | #include <linux/nfsd/cache.h> | |
46 | #include <linux/nfs4.h> | |
47 | #include <linux/nfsd/state.h> | |
48 | #include <linux/nfsd/xdr4.h> | |
49 | #include <linux/nfs4_acl.h> | |
dcb488a3 | 50 | #include <linux/sunrpc/gss_api.h> |
1da177e4 LT |
51 | |
52 | #define NFSDDBG_FACILITY NFSDDBG_PROC | |
53 | ||
54 | static inline void | |
55 | fh_dup2(struct svc_fh *dst, struct svc_fh *src) | |
56 | { | |
57 | fh_put(dst); | |
58 | dget(src->fh_dentry); | |
59 | if (src->fh_export) | |
60 | cache_get(&src->fh_export->h); | |
61 | *dst = *src; | |
62 | } | |
63 | ||
b37ad28b | 64 | static __be32 |
dc730e17 | 65 | do_open_permission(struct svc_rqst *rqstp, struct svc_fh *current_fh, struct nfsd4_open *open, int accmode) |
1da177e4 | 66 | { |
b37ad28b | 67 | __be32 status; |
1da177e4 LT |
68 | |
69 | if (open->op_truncate && | |
70 | !(open->op_share_access & NFS4_SHARE_ACCESS_WRITE)) | |
71 | return nfserr_inval; | |
72 | ||
1da177e4 | 73 | if (open->op_share_access & NFS4_SHARE_ACCESS_READ) |
dc730e17 | 74 | accmode |= MAY_READ; |
9801d8a3 | 75 | if (open->op_share_access & NFS4_SHARE_ACCESS_WRITE) |
1da177e4 | 76 | accmode |= (MAY_WRITE | MAY_TRUNC); |
9801d8a3 BF |
77 | if (open->op_share_deny & NFS4_SHARE_DENY_WRITE) |
78 | accmode |= MAY_WRITE; | |
1da177e4 LT |
79 | |
80 | status = fh_verify(rqstp, current_fh, S_IFREG, accmode); | |
81 | ||
82 | return status; | |
83 | } | |
84 | ||
b37ad28b | 85 | static __be32 |
1da177e4 LT |
86 | do_open_lookup(struct svc_rqst *rqstp, struct svc_fh *current_fh, struct nfsd4_open *open) |
87 | { | |
88 | struct svc_fh resfh; | |
b37ad28b | 89 | __be32 status; |
81ac95c5 | 90 | int created = 0; |
1da177e4 LT |
91 | |
92 | fh_init(&resfh, NFS4_FHSIZE); | |
93 | open->op_truncate = 0; | |
94 | ||
95 | if (open->op_create) { | |
96 | /* | |
97 | * Note: create modes (UNCHECKED,GUARDED...) are the same | |
98 | * in NFSv4 as in v3. | |
99 | */ | |
100 | status = nfsd_create_v3(rqstp, current_fh, open->op_fname.data, | |
101 | open->op_fname.len, &open->op_iattr, | |
102 | &resfh, open->op_createmode, | |
749997e5 JL |
103 | (u32 *)open->op_verf.data, |
104 | &open->op_truncate, &created); | |
105 | ||
106 | /* If we ever decide to use different attrs to store the | |
107 | * verifier in nfsd_create_v3, then we'll need to change this | |
108 | */ | |
109 | if (open->op_createmode == NFS4_CREATE_EXCLUSIVE && status == 0) | |
110 | open->op_bmval[1] |= (FATTR4_WORD1_TIME_ACCESS | | |
111 | FATTR4_WORD1_TIME_MODIFY); | |
af85852d | 112 | } else { |
1da177e4 LT |
113 | status = nfsd_lookup(rqstp, current_fh, |
114 | open->op_fname.data, open->op_fname.len, &resfh); | |
115 | fh_unlock(current_fh); | |
116 | } | |
af85852d BF |
117 | if (status) |
118 | goto out; | |
1da177e4 | 119 | |
af85852d | 120 | set_change_info(&open->op_cinfo, current_fh); |
1da177e4 | 121 | |
af85852d BF |
122 | /* set reply cache */ |
123 | fh_dup2(current_fh, &resfh); | |
124 | open->op_stateowner->so_replay.rp_openfh_len = resfh.fh_handle.fh_size; | |
125 | memcpy(open->op_stateowner->so_replay.rp_openfh, | |
126 | &resfh.fh_handle.fh_base, resfh.fh_handle.fh_size); | |
1da177e4 | 127 | |
81ac95c5 BF |
128 | if (!created) |
129 | status = do_open_permission(rqstp, current_fh, open, MAY_NOP); | |
1da177e4 | 130 | |
af85852d | 131 | out: |
1da177e4 LT |
132 | fh_put(&resfh); |
133 | return status; | |
134 | } | |
135 | ||
b37ad28b | 136 | static __be32 |
1da177e4 LT |
137 | do_open_fhandle(struct svc_rqst *rqstp, struct svc_fh *current_fh, struct nfsd4_open *open) |
138 | { | |
b37ad28b | 139 | __be32 status; |
1da177e4 LT |
140 | |
141 | /* Only reclaims from previously confirmed clients are valid */ | |
142 | if ((status = nfs4_check_open_reclaim(&open->op_clientid))) | |
143 | return status; | |
144 | ||
145 | /* We don't know the target directory, and therefore can not | |
146 | * set the change info | |
147 | */ | |
148 | ||
149 | memset(&open->op_cinfo, 0, sizeof(struct nfsd4_change_info)); | |
150 | ||
151 | /* set replay cache */ | |
152 | open->op_stateowner->so_replay.rp_openfh_len = current_fh->fh_handle.fh_size; | |
153 | memcpy(open->op_stateowner->so_replay.rp_openfh, | |
154 | ¤t_fh->fh_handle.fh_base, | |
155 | current_fh->fh_handle.fh_size); | |
156 | ||
157 | open->op_truncate = (open->op_iattr.ia_valid & ATTR_SIZE) && | |
158 | (open->op_iattr.ia_size == 0); | |
159 | ||
dc730e17 | 160 | status = do_open_permission(rqstp, current_fh, open, MAY_OWNER_OVERRIDE); |
1da177e4 LT |
161 | |
162 | return status; | |
163 | } | |
164 | ||
165 | ||
7191155b | 166 | static __be32 |
ca364317 | 167 | nfsd4_open(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
a4f1706a | 168 | struct nfsd4_open *open) |
1da177e4 | 169 | { |
b37ad28b | 170 | __be32 status; |
1da177e4 LT |
171 | dprintk("NFSD: nfsd4_open filename %.*s op_stateowner %p\n", |
172 | (int)open->op_fname.len, open->op_fname.data, | |
173 | open->op_stateowner); | |
174 | ||
1da177e4 LT |
175 | /* This check required by spec. */ |
176 | if (open->op_create && open->op_claim_type != NFS4_OPEN_CLAIM_NULL) | |
177 | return nfserr_inval; | |
178 | ||
179 | nfs4_lock_state(); | |
180 | ||
181 | /* check seqid for replay. set nfs4_owner */ | |
182 | status = nfsd4_process_open1(open); | |
a90b061c | 183 | if (status == nfserr_replay_me) { |
1da177e4 | 184 | struct nfs4_replay *rp = &open->op_stateowner->so_replay; |
ca364317 BF |
185 | fh_put(&cstate->current_fh); |
186 | cstate->current_fh.fh_handle.fh_size = rp->rp_openfh_len; | |
187 | memcpy(&cstate->current_fh.fh_handle.fh_base, rp->rp_openfh, | |
1da177e4 | 188 | rp->rp_openfh_len); |
ca364317 | 189 | status = fh_verify(rqstp, &cstate->current_fh, 0, MAY_NOP); |
1da177e4 LT |
190 | if (status) |
191 | dprintk("nfsd4_open: replay failed" | |
192 | " restoring previous filehandle\n"); | |
193 | else | |
a90b061c | 194 | status = nfserr_replay_me; |
1da177e4 LT |
195 | } |
196 | if (status) | |
197 | goto out; | |
fb553c0f BF |
198 | |
199 | /* Openowner is now set, so sequence id will get bumped. Now we need | |
200 | * these checks before we do any creates: */ | |
cbd0d51a | 201 | status = nfserr_grace; |
fb553c0f | 202 | if (nfs4_in_grace() && open->op_claim_type != NFS4_OPEN_CLAIM_PREVIOUS) |
cbd0d51a BF |
203 | goto out; |
204 | status = nfserr_no_grace; | |
fb553c0f | 205 | if (!nfs4_in_grace() && open->op_claim_type == NFS4_OPEN_CLAIM_PREVIOUS) |
cbd0d51a | 206 | goto out; |
fb553c0f | 207 | |
1da177e4 | 208 | switch (open->op_claim_type) { |
0dd3c192 N |
209 | case NFS4_OPEN_CLAIM_DELEGATE_CUR: |
210 | status = nfserr_inval; | |
211 | if (open->op_create) | |
212 | goto out; | |
213 | /* fall through */ | |
1da177e4 LT |
214 | case NFS4_OPEN_CLAIM_NULL: |
215 | /* | |
216 | * (1) set CURRENT_FH to the file being opened, | |
217 | * creating it if necessary, (2) set open->op_cinfo, | |
218 | * (3) set open->op_truncate if the file is to be | |
219 | * truncated after opening, (4) do permission checking. | |
220 | */ | |
ca364317 BF |
221 | status = do_open_lookup(rqstp, &cstate->current_fh, |
222 | open); | |
1da177e4 LT |
223 | if (status) |
224 | goto out; | |
225 | break; | |
226 | case NFS4_OPEN_CLAIM_PREVIOUS: | |
a525825d | 227 | open->op_stateowner->so_confirmed = 1; |
1da177e4 LT |
228 | /* |
229 | * The CURRENT_FH is already set to the file being | |
230 | * opened. (1) set open->op_cinfo, (2) set | |
231 | * open->op_truncate if the file is to be truncated | |
232 | * after opening, (3) do permission checking. | |
233 | */ | |
ca364317 BF |
234 | status = do_open_fhandle(rqstp, &cstate->current_fh, |
235 | open); | |
1da177e4 LT |
236 | if (status) |
237 | goto out; | |
238 | break; | |
1da177e4 | 239 | case NFS4_OPEN_CLAIM_DELEGATE_PREV: |
a525825d | 240 | open->op_stateowner->so_confirmed = 1; |
2fdada03 | 241 | dprintk("NFSD: unsupported OPEN claim type %d\n", |
1da177e4 LT |
242 | open->op_claim_type); |
243 | status = nfserr_notsupp; | |
244 | goto out; | |
245 | default: | |
2fdada03 | 246 | dprintk("NFSD: Invalid OPEN claim type %d\n", |
1da177e4 LT |
247 | open->op_claim_type); |
248 | status = nfserr_inval; | |
249 | goto out; | |
250 | } | |
251 | /* | |
252 | * nfsd4_process_open2() does the actual opening of the file. If | |
253 | * successful, it (1) truncates the file if open->op_truncate was | |
254 | * set, (2) sets open->op_stateid, (3) sets open->op_delegation. | |
255 | */ | |
ca364317 | 256 | status = nfsd4_process_open2(rqstp, &cstate->current_fh, open); |
1da177e4 | 257 | out: |
f2327d9a | 258 | if (open->op_stateowner) { |
1da177e4 | 259 | nfs4_get_stateowner(open->op_stateowner); |
a4f1706a | 260 | cstate->replay_owner = open->op_stateowner; |
f2327d9a | 261 | } |
1da177e4 LT |
262 | nfs4_unlock_state(); |
263 | return status; | |
264 | } | |
265 | ||
266 | /* | |
267 | * filehandle-manipulating ops. | |
268 | */ | |
7191155b | 269 | static __be32 |
b591480b BF |
270 | nfsd4_getfh(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
271 | struct svc_fh **getfh) | |
1da177e4 | 272 | { |
ca364317 | 273 | if (!cstate->current_fh.fh_dentry) |
1da177e4 LT |
274 | return nfserr_nofilehandle; |
275 | ||
ca364317 | 276 | *getfh = &cstate->current_fh; |
1da177e4 LT |
277 | return nfs_ok; |
278 | } | |
279 | ||
7191155b | 280 | static __be32 |
ca364317 BF |
281 | nfsd4_putfh(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
282 | struct nfsd4_putfh *putfh) | |
1da177e4 | 283 | { |
ca364317 BF |
284 | fh_put(&cstate->current_fh); |
285 | cstate->current_fh.fh_handle.fh_size = putfh->pf_fhlen; | |
286 | memcpy(&cstate->current_fh.fh_handle.fh_base, putfh->pf_fhval, | |
287 | putfh->pf_fhlen); | |
288 | return fh_verify(rqstp, &cstate->current_fh, 0, MAY_NOP); | |
1da177e4 LT |
289 | } |
290 | ||
7191155b | 291 | static __be32 |
b591480b BF |
292 | nfsd4_putrootfh(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
293 | void *arg) | |
1da177e4 | 294 | { |
b37ad28b | 295 | __be32 status; |
1da177e4 | 296 | |
ca364317 | 297 | fh_put(&cstate->current_fh); |
df547efb | 298 | status = exp_pseudoroot(rqstp, &cstate->current_fh); |
1da177e4 LT |
299 | return status; |
300 | } | |
301 | ||
7191155b | 302 | static __be32 |
b591480b BF |
303 | nfsd4_restorefh(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
304 | void *arg) | |
1da177e4 | 305 | { |
ca364317 | 306 | if (!cstate->save_fh.fh_dentry) |
1da177e4 LT |
307 | return nfserr_restorefh; |
308 | ||
ca364317 | 309 | fh_dup2(&cstate->current_fh, &cstate->save_fh); |
1da177e4 LT |
310 | return nfs_ok; |
311 | } | |
312 | ||
7191155b | 313 | static __be32 |
b591480b BF |
314 | nfsd4_savefh(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
315 | void *arg) | |
1da177e4 | 316 | { |
ca364317 | 317 | if (!cstate->current_fh.fh_dentry) |
1da177e4 LT |
318 | return nfserr_nofilehandle; |
319 | ||
ca364317 | 320 | fh_dup2(&cstate->save_fh, &cstate->current_fh); |
1da177e4 LT |
321 | return nfs_ok; |
322 | } | |
323 | ||
324 | /* | |
325 | * misc nfsv4 ops | |
326 | */ | |
7191155b | 327 | static __be32 |
ca364317 BF |
328 | nfsd4_access(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
329 | struct nfsd4_access *access) | |
1da177e4 LT |
330 | { |
331 | if (access->ac_req_access & ~NFS3_ACCESS_FULL) | |
332 | return nfserr_inval; | |
333 | ||
334 | access->ac_resp_access = access->ac_req_access; | |
ca364317 BF |
335 | return nfsd_access(rqstp, &cstate->current_fh, &access->ac_resp_access, |
336 | &access->ac_supported); | |
1da177e4 LT |
337 | } |
338 | ||
7191155b | 339 | static __be32 |
ca364317 BF |
340 | nfsd4_commit(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
341 | struct nfsd4_commit *commit) | |
1da177e4 | 342 | { |
b37ad28b | 343 | __be32 status; |
1da177e4 LT |
344 | |
345 | u32 *p = (u32 *)commit->co_verf.data; | |
346 | *p++ = nfssvc_boot.tv_sec; | |
347 | *p++ = nfssvc_boot.tv_usec; | |
348 | ||
ca364317 BF |
349 | status = nfsd_commit(rqstp, &cstate->current_fh, commit->co_offset, |
350 | commit->co_count); | |
1da177e4 LT |
351 | if (status == nfserr_symlink) |
352 | status = nfserr_inval; | |
353 | return status; | |
354 | } | |
355 | ||
b37ad28b | 356 | static __be32 |
ca364317 BF |
357 | nfsd4_create(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
358 | struct nfsd4_create *create) | |
1da177e4 LT |
359 | { |
360 | struct svc_fh resfh; | |
b37ad28b | 361 | __be32 status; |
1da177e4 LT |
362 | dev_t rdev; |
363 | ||
364 | fh_init(&resfh, NFS4_FHSIZE); | |
365 | ||
ca364317 | 366 | status = fh_verify(rqstp, &cstate->current_fh, S_IFDIR, MAY_CREATE); |
1da177e4 LT |
367 | if (status == nfserr_symlink) |
368 | status = nfserr_notdir; | |
369 | if (status) | |
370 | return status; | |
371 | ||
372 | switch (create->cr_type) { | |
373 | case NF4LNK: | |
374 | /* ugh! we have to null-terminate the linktext, or | |
375 | * vfs_symlink() will choke. it is always safe to | |
376 | * null-terminate by brute force, since at worst we | |
377 | * will overwrite the first byte of the create namelen | |
378 | * in the XDR buffer, which has already been extracted | |
379 | * during XDR decode. | |
380 | */ | |
381 | create->cr_linkname[create->cr_linklen] = 0; | |
382 | ||
ca364317 BF |
383 | status = nfsd_symlink(rqstp, &cstate->current_fh, |
384 | create->cr_name, create->cr_namelen, | |
385 | create->cr_linkname, create->cr_linklen, | |
386 | &resfh, &create->cr_iattr); | |
1da177e4 LT |
387 | break; |
388 | ||
389 | case NF4BLK: | |
390 | rdev = MKDEV(create->cr_specdata1, create->cr_specdata2); | |
391 | if (MAJOR(rdev) != create->cr_specdata1 || | |
392 | MINOR(rdev) != create->cr_specdata2) | |
393 | return nfserr_inval; | |
ca364317 BF |
394 | status = nfsd_create(rqstp, &cstate->current_fh, |
395 | create->cr_name, create->cr_namelen, | |
396 | &create->cr_iattr, S_IFBLK, rdev, &resfh); | |
1da177e4 LT |
397 | break; |
398 | ||
399 | case NF4CHR: | |
400 | rdev = MKDEV(create->cr_specdata1, create->cr_specdata2); | |
401 | if (MAJOR(rdev) != create->cr_specdata1 || | |
402 | MINOR(rdev) != create->cr_specdata2) | |
403 | return nfserr_inval; | |
ca364317 BF |
404 | status = nfsd_create(rqstp, &cstate->current_fh, |
405 | create->cr_name, create->cr_namelen, | |
406 | &create->cr_iattr,S_IFCHR, rdev, &resfh); | |
1da177e4 LT |
407 | break; |
408 | ||
409 | case NF4SOCK: | |
ca364317 BF |
410 | status = nfsd_create(rqstp, &cstate->current_fh, |
411 | create->cr_name, create->cr_namelen, | |
412 | &create->cr_iattr, S_IFSOCK, 0, &resfh); | |
1da177e4 LT |
413 | break; |
414 | ||
415 | case NF4FIFO: | |
ca364317 BF |
416 | status = nfsd_create(rqstp, &cstate->current_fh, |
417 | create->cr_name, create->cr_namelen, | |
418 | &create->cr_iattr, S_IFIFO, 0, &resfh); | |
1da177e4 LT |
419 | break; |
420 | ||
421 | case NF4DIR: | |
422 | create->cr_iattr.ia_valid &= ~ATTR_SIZE; | |
ca364317 BF |
423 | status = nfsd_create(rqstp, &cstate->current_fh, |
424 | create->cr_name, create->cr_namelen, | |
425 | &create->cr_iattr, S_IFDIR, 0, &resfh); | |
1da177e4 LT |
426 | break; |
427 | ||
428 | default: | |
429 | status = nfserr_badtype; | |
430 | } | |
431 | ||
432 | if (!status) { | |
ca364317 BF |
433 | fh_unlock(&cstate->current_fh); |
434 | set_change_info(&create->cr_cinfo, &cstate->current_fh); | |
435 | fh_dup2(&cstate->current_fh, &resfh); | |
1da177e4 LT |
436 | } |
437 | ||
438 | fh_put(&resfh); | |
439 | return status; | |
440 | } | |
441 | ||
7191155b | 442 | static __be32 |
ca364317 BF |
443 | nfsd4_getattr(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
444 | struct nfsd4_getattr *getattr) | |
1da177e4 | 445 | { |
b37ad28b | 446 | __be32 status; |
1da177e4 | 447 | |
ca364317 | 448 | status = fh_verify(rqstp, &cstate->current_fh, 0, MAY_NOP); |
1da177e4 LT |
449 | if (status) |
450 | return status; | |
451 | ||
452 | if (getattr->ga_bmval[1] & NFSD_WRITEONLY_ATTRS_WORD1) | |
453 | return nfserr_inval; | |
454 | ||
455 | getattr->ga_bmval[0] &= NFSD_SUPPORTED_ATTRS_WORD0; | |
456 | getattr->ga_bmval[1] &= NFSD_SUPPORTED_ATTRS_WORD1; | |
457 | ||
ca364317 | 458 | getattr->ga_fhp = &cstate->current_fh; |
1da177e4 LT |
459 | return nfs_ok; |
460 | } | |
461 | ||
7191155b | 462 | static __be32 |
ca364317 BF |
463 | nfsd4_link(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
464 | struct nfsd4_link *link) | |
1da177e4 | 465 | { |
b37ad28b | 466 | __be32 status = nfserr_nofilehandle; |
1da177e4 | 467 | |
ca364317 | 468 | if (!cstate->save_fh.fh_dentry) |
1da177e4 | 469 | return status; |
ca364317 BF |
470 | status = nfsd_link(rqstp, &cstate->current_fh, |
471 | link->li_name, link->li_namelen, &cstate->save_fh); | |
1da177e4 | 472 | if (!status) |
ca364317 | 473 | set_change_info(&link->li_cinfo, &cstate->current_fh); |
1da177e4 LT |
474 | return status; |
475 | } | |
476 | ||
b37ad28b | 477 | static __be32 |
b591480b BF |
478 | nfsd4_lookupp(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
479 | void *arg) | |
1da177e4 LT |
480 | { |
481 | struct svc_fh tmp_fh; | |
b37ad28b | 482 | __be32 ret; |
1da177e4 LT |
483 | |
484 | fh_init(&tmp_fh, NFS4_FHSIZE); | |
df547efb BF |
485 | ret = exp_pseudoroot(rqstp, &tmp_fh); |
486 | if (ret) | |
1da177e4 | 487 | return ret; |
ca364317 | 488 | if (tmp_fh.fh_dentry == cstate->current_fh.fh_dentry) { |
1da177e4 LT |
489 | fh_put(&tmp_fh); |
490 | return nfserr_noent; | |
491 | } | |
492 | fh_put(&tmp_fh); | |
ca364317 BF |
493 | return nfsd_lookup(rqstp, &cstate->current_fh, |
494 | "..", 2, &cstate->current_fh); | |
1da177e4 LT |
495 | } |
496 | ||
7191155b | 497 | static __be32 |
ca364317 BF |
498 | nfsd4_lookup(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
499 | struct nfsd4_lookup *lookup) | |
1da177e4 | 500 | { |
ca364317 BF |
501 | return nfsd_lookup(rqstp, &cstate->current_fh, |
502 | lookup->lo_name, lookup->lo_len, | |
503 | &cstate->current_fh); | |
1da177e4 LT |
504 | } |
505 | ||
7191155b | 506 | static __be32 |
ca364317 BF |
507 | nfsd4_read(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
508 | struct nfsd4_read *read) | |
1da177e4 | 509 | { |
b37ad28b | 510 | __be32 status; |
1da177e4 LT |
511 | |
512 | /* no need to check permission - this will be done in nfsd_read() */ | |
513 | ||
7e06b7f9 | 514 | read->rd_filp = NULL; |
1da177e4 LT |
515 | if (read->rd_offset >= OFFSET_MAX) |
516 | return nfserr_inval; | |
517 | ||
518 | nfs4_lock_state(); | |
519 | /* check stateid */ | |
ca364317 BF |
520 | if ((status = nfs4_preprocess_stateid_op(&cstate->current_fh, |
521 | &read->rd_stateid, | |
7e06b7f9 | 522 | CHECK_FH | RD_STATE, &read->rd_filp))) { |
1da177e4 LT |
523 | dprintk("NFSD: nfsd4_read: couldn't process stateid!\n"); |
524 | goto out; | |
525 | } | |
7e06b7f9 N |
526 | if (read->rd_filp) |
527 | get_file(read->rd_filp); | |
1da177e4 LT |
528 | status = nfs_ok; |
529 | out: | |
530 | nfs4_unlock_state(); | |
531 | read->rd_rqstp = rqstp; | |
ca364317 | 532 | read->rd_fhp = &cstate->current_fh; |
1da177e4 LT |
533 | return status; |
534 | } | |
535 | ||
7191155b | 536 | static __be32 |
ca364317 BF |
537 | nfsd4_readdir(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
538 | struct nfsd4_readdir *readdir) | |
1da177e4 LT |
539 | { |
540 | u64 cookie = readdir->rd_cookie; | |
541 | static const nfs4_verifier zeroverf; | |
542 | ||
543 | /* no need to check permission - this will be done in nfsd_readdir() */ | |
544 | ||
545 | if (readdir->rd_bmval[1] & NFSD_WRITEONLY_ATTRS_WORD1) | |
546 | return nfserr_inval; | |
547 | ||
548 | readdir->rd_bmval[0] &= NFSD_SUPPORTED_ATTRS_WORD0; | |
549 | readdir->rd_bmval[1] &= NFSD_SUPPORTED_ATTRS_WORD1; | |
550 | ||
551 | if ((cookie > ~(u32)0) || (cookie == 1) || (cookie == 2) || | |
552 | (cookie == 0 && memcmp(readdir->rd_verf.data, zeroverf.data, NFS4_VERIFIER_SIZE))) | |
553 | return nfserr_bad_cookie; | |
554 | ||
555 | readdir->rd_rqstp = rqstp; | |
ca364317 | 556 | readdir->rd_fhp = &cstate->current_fh; |
1da177e4 LT |
557 | return nfs_ok; |
558 | } | |
559 | ||
7191155b | 560 | static __be32 |
ca364317 BF |
561 | nfsd4_readlink(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
562 | struct nfsd4_readlink *readlink) | |
1da177e4 LT |
563 | { |
564 | readlink->rl_rqstp = rqstp; | |
ca364317 | 565 | readlink->rl_fhp = &cstate->current_fh; |
1da177e4 LT |
566 | return nfs_ok; |
567 | } | |
568 | ||
7191155b | 569 | static __be32 |
ca364317 BF |
570 | nfsd4_remove(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
571 | struct nfsd4_remove *remove) | |
1da177e4 | 572 | { |
b37ad28b | 573 | __be32 status; |
1da177e4 | 574 | |
c815afc7 N |
575 | if (nfs4_in_grace()) |
576 | return nfserr_grace; | |
ca364317 BF |
577 | status = nfsd_unlink(rqstp, &cstate->current_fh, 0, |
578 | remove->rm_name, remove->rm_namelen); | |
1da177e4 LT |
579 | if (status == nfserr_symlink) |
580 | return nfserr_notdir; | |
581 | if (!status) { | |
ca364317 BF |
582 | fh_unlock(&cstate->current_fh); |
583 | set_change_info(&remove->rm_cinfo, &cstate->current_fh); | |
1da177e4 LT |
584 | } |
585 | return status; | |
586 | } | |
587 | ||
7191155b | 588 | static __be32 |
ca364317 BF |
589 | nfsd4_rename(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
590 | struct nfsd4_rename *rename) | |
1da177e4 | 591 | { |
b37ad28b | 592 | __be32 status = nfserr_nofilehandle; |
1da177e4 | 593 | |
ca364317 | 594 | if (!cstate->save_fh.fh_dentry) |
1da177e4 | 595 | return status; |
ca364317 | 596 | if (nfs4_in_grace() && !(cstate->save_fh.fh_export->ex_flags |
c815afc7 N |
597 | & NFSEXP_NOSUBTREECHECK)) |
598 | return nfserr_grace; | |
ca364317 BF |
599 | status = nfsd_rename(rqstp, &cstate->save_fh, rename->rn_sname, |
600 | rename->rn_snamelen, &cstate->current_fh, | |
1da177e4 LT |
601 | rename->rn_tname, rename->rn_tnamelen); |
602 | ||
603 | /* the underlying filesystem returns different error's than required | |
604 | * by NFSv4. both save_fh and current_fh have been verified.. */ | |
605 | if (status == nfserr_isdir) | |
606 | status = nfserr_exist; | |
607 | else if ((status == nfserr_notdir) && | |
ca364317 BF |
608 | (S_ISDIR(cstate->save_fh.fh_dentry->d_inode->i_mode) && |
609 | S_ISDIR(cstate->current_fh.fh_dentry->d_inode->i_mode))) | |
1da177e4 LT |
610 | status = nfserr_exist; |
611 | else if (status == nfserr_symlink) | |
612 | status = nfserr_notdir; | |
613 | ||
614 | if (!status) { | |
ca364317 BF |
615 | set_change_info(&rename->rn_sinfo, &cstate->current_fh); |
616 | set_change_info(&rename->rn_tinfo, &cstate->save_fh); | |
1da177e4 LT |
617 | } |
618 | return status; | |
619 | } | |
620 | ||
dcb488a3 AA |
621 | static __be32 |
622 | nfsd4_secinfo(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, | |
623 | struct nfsd4_secinfo *secinfo) | |
624 | { | |
625 | struct svc_fh resfh; | |
626 | struct svc_export *exp; | |
627 | struct dentry *dentry; | |
628 | __be32 err; | |
629 | ||
630 | fh_init(&resfh, NFS4_FHSIZE); | |
631 | err = nfsd_lookup_dentry(rqstp, &cstate->current_fh, | |
632 | secinfo->si_name, secinfo->si_namelen, | |
633 | &exp, &dentry); | |
634 | if (err) | |
635 | return err; | |
636 | if (dentry->d_inode == NULL) { | |
637 | exp_put(exp); | |
638 | err = nfserr_noent; | |
639 | } else | |
640 | secinfo->si_exp = exp; | |
641 | dput(dentry); | |
642 | return err; | |
643 | } | |
644 | ||
7191155b | 645 | static __be32 |
ca364317 BF |
646 | nfsd4_setattr(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
647 | struct nfsd4_setattr *setattr) | |
1da177e4 | 648 | { |
b37ad28b | 649 | __be32 status = nfs_ok; |
1da177e4 | 650 | |
1da177e4 LT |
651 | if (setattr->sa_iattr.ia_valid & ATTR_SIZE) { |
652 | nfs4_lock_state(); | |
ca364317 | 653 | status = nfs4_preprocess_stateid_op(&cstate->current_fh, |
375c5547 | 654 | &setattr->sa_stateid, CHECK_FH | WR_STATE, NULL); |
1da177e4 | 655 | nfs4_unlock_state(); |
375c5547 | 656 | if (status) { |
3e3b4800 | 657 | dprintk("NFSD: nfsd4_setattr: couldn't process stateid!\n"); |
375c5547 BF |
658 | return status; |
659 | } | |
1da177e4 | 660 | } |
18f335af DH |
661 | status = mnt_want_write(cstate->current_fh.fh_export->ex_path.mnt); |
662 | if (status) | |
663 | return status; | |
1da177e4 LT |
664 | status = nfs_ok; |
665 | if (setattr->sa_acl != NULL) | |
ca364317 BF |
666 | status = nfsd4_set_nfs4_acl(rqstp, &cstate->current_fh, |
667 | setattr->sa_acl); | |
1da177e4 | 668 | if (status) |
18f335af | 669 | goto out; |
ca364317 | 670 | status = nfsd_setattr(rqstp, &cstate->current_fh, &setattr->sa_iattr, |
1da177e4 | 671 | 0, (time_t)0); |
18f335af DH |
672 | out: |
673 | mnt_drop_write(cstate->current_fh.fh_export->ex_path.mnt); | |
1da177e4 LT |
674 | return status; |
675 | } | |
676 | ||
7191155b | 677 | static __be32 |
ca364317 BF |
678 | nfsd4_write(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
679 | struct nfsd4_write *write) | |
1da177e4 LT |
680 | { |
681 | stateid_t *stateid = &write->wr_stateid; | |
682 | struct file *filp = NULL; | |
683 | u32 *p; | |
b37ad28b | 684 | __be32 status = nfs_ok; |
1da177e4 LT |
685 | |
686 | /* no need to check permission - this will be done in nfsd_write() */ | |
687 | ||
688 | if (write->wr_offset >= OFFSET_MAX) | |
689 | return nfserr_inval; | |
690 | ||
691 | nfs4_lock_state(); | |
ca364317 | 692 | status = nfs4_preprocess_stateid_op(&cstate->current_fh, stateid, |
375c5547 | 693 | CHECK_FH | WR_STATE, &filp); |
7e06b7f9 N |
694 | if (filp) |
695 | get_file(filp); | |
1da177e4 LT |
696 | nfs4_unlock_state(); |
697 | ||
375c5547 BF |
698 | if (status) { |
699 | dprintk("NFSD: nfsd4_write: couldn't process stateid!\n"); | |
700 | return status; | |
701 | } | |
702 | ||
1da177e4 LT |
703 | write->wr_bytes_written = write->wr_buflen; |
704 | write->wr_how_written = write->wr_stable_how; | |
705 | p = (u32 *)write->wr_verifier.data; | |
706 | *p++ = nfssvc_boot.tv_sec; | |
707 | *p++ = nfssvc_boot.tv_usec; | |
708 | ||
ca364317 BF |
709 | status = nfsd_write(rqstp, &cstate->current_fh, filp, |
710 | write->wr_offset, rqstp->rq_vec, write->wr_vlen, | |
711 | write->wr_buflen, &write->wr_how_written); | |
7e06b7f9 N |
712 | if (filp) |
713 | fput(filp); | |
1da177e4 LT |
714 | |
715 | if (status == nfserr_symlink) | |
716 | status = nfserr_inval; | |
717 | return status; | |
1da177e4 LT |
718 | } |
719 | ||
720 | /* This routine never returns NFS_OK! If there are no other errors, it | |
721 | * will return NFSERR_SAME or NFSERR_NOT_SAME depending on whether the | |
722 | * attributes matched. VERIFY is implemented by mapping NFSERR_SAME | |
723 | * to NFS_OK after the call; NVERIFY by mapping NFSERR_NOT_SAME to NFS_OK. | |
724 | */ | |
b37ad28b | 725 | static __be32 |
c954e2a5 | 726 | _nfsd4_verify(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
ca364317 | 727 | struct nfsd4_verify *verify) |
1da177e4 | 728 | { |
2ebbc012 | 729 | __be32 *buf, *p; |
1da177e4 | 730 | int count; |
b37ad28b | 731 | __be32 status; |
1da177e4 | 732 | |
ca364317 | 733 | status = fh_verify(rqstp, &cstate->current_fh, 0, MAY_NOP); |
1da177e4 LT |
734 | if (status) |
735 | return status; | |
736 | ||
737 | if ((verify->ve_bmval[0] & ~NFSD_SUPPORTED_ATTRS_WORD0) | |
738 | || (verify->ve_bmval[1] & ~NFSD_SUPPORTED_ATTRS_WORD1)) | |
739 | return nfserr_attrnotsupp; | |
740 | if ((verify->ve_bmval[0] & FATTR4_WORD0_RDATTR_ERROR) | |
741 | || (verify->ve_bmval[1] & NFSD_WRITEONLY_ATTRS_WORD1)) | |
742 | return nfserr_inval; | |
743 | if (verify->ve_attrlen & 3) | |
744 | return nfserr_inval; | |
745 | ||
746 | /* count in words: | |
747 | * bitmap_len(1) + bitmap(2) + attr_len(1) = 4 | |
748 | */ | |
749 | count = 4 + (verify->ve_attrlen >> 2); | |
750 | buf = kmalloc(count << 2, GFP_KERNEL); | |
751 | if (!buf) | |
752 | return nfserr_resource; | |
753 | ||
ca364317 BF |
754 | status = nfsd4_encode_fattr(&cstate->current_fh, |
755 | cstate->current_fh.fh_export, | |
756 | cstate->current_fh.fh_dentry, buf, | |
1da177e4 | 757 | &count, verify->ve_bmval, |
406a7ea9 | 758 | rqstp, 0); |
1da177e4 LT |
759 | |
760 | /* this means that nfsd4_encode_fattr() ran out of space */ | |
761 | if (status == nfserr_resource && count == 0) | |
762 | status = nfserr_not_same; | |
763 | if (status) | |
764 | goto out_kfree; | |
765 | ||
766 | p = buf + 3; | |
767 | status = nfserr_not_same; | |
768 | if (ntohl(*p++) != verify->ve_attrlen) | |
769 | goto out_kfree; | |
770 | if (!memcmp(p, verify->ve_attrval, verify->ve_attrlen)) | |
771 | status = nfserr_same; | |
772 | ||
773 | out_kfree: | |
774 | kfree(buf); | |
775 | return status; | |
776 | } | |
777 | ||
c954e2a5 BF |
778 | static __be32 |
779 | nfsd4_nverify(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, | |
780 | struct nfsd4_verify *verify) | |
781 | { | |
782 | __be32 status; | |
783 | ||
784 | status = _nfsd4_verify(rqstp, cstate, verify); | |
785 | return status == nfserr_not_same ? nfs_ok : status; | |
786 | } | |
787 | ||
788 | static __be32 | |
789 | nfsd4_verify(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, | |
790 | struct nfsd4_verify *verify) | |
791 | { | |
792 | __be32 status; | |
793 | ||
794 | status = _nfsd4_verify(rqstp, cstate, verify); | |
795 | return status == nfserr_same ? nfs_ok : status; | |
796 | } | |
797 | ||
1da177e4 LT |
798 | /* |
799 | * NULL call. | |
800 | */ | |
7111c66e | 801 | static __be32 |
1da177e4 LT |
802 | nfsd4_proc_null(struct svc_rqst *rqstp, void *argp, void *resp) |
803 | { | |
804 | return nfs_ok; | |
805 | } | |
806 | ||
e2b20950 SA |
807 | static inline void nfsd4_increment_op_stats(u32 opnum) |
808 | { | |
809 | if (opnum >= FIRST_NFS4_OP && opnum <= LAST_NFS4_OP) | |
810 | nfsdstats.nfs4_opcount[opnum]++; | |
811 | } | |
812 | ||
ca364317 BF |
813 | static void cstate_free(struct nfsd4_compound_state *cstate) |
814 | { | |
815 | if (cstate == NULL) | |
816 | return; | |
817 | fh_put(&cstate->current_fh); | |
818 | fh_put(&cstate->save_fh); | |
a4f1706a | 819 | BUG_ON(cstate->replay_owner); |
ca364317 BF |
820 | kfree(cstate); |
821 | } | |
822 | ||
823 | static struct nfsd4_compound_state *cstate_alloc(void) | |
824 | { | |
825 | struct nfsd4_compound_state *cstate; | |
826 | ||
827 | cstate = kmalloc(sizeof(struct nfsd4_compound_state), GFP_KERNEL); | |
828 | if (cstate == NULL) | |
829 | return NULL; | |
830 | fh_init(&cstate->current_fh, NFS4_FHSIZE); | |
831 | fh_init(&cstate->save_fh, NFS4_FHSIZE); | |
a4f1706a | 832 | cstate->replay_owner = NULL; |
ca364317 BF |
833 | return cstate; |
834 | } | |
1da177e4 | 835 | |
b591480b BF |
836 | typedef __be32(*nfsd4op_func)(struct svc_rqst *, struct nfsd4_compound_state *, |
837 | void *); | |
838 | ||
839 | struct nfsd4_operation { | |
840 | nfsd4op_func op_func; | |
841 | u32 op_flags; | |
27d630ec BF |
842 | /* Most ops require a valid current filehandle; a few don't: */ |
843 | #define ALLOWED_WITHOUT_FH 1 | |
eeac294e | 844 | /* GETATTR and ops not listed as returning NFS4ERR_MOVED: */ |
27d630ec | 845 | #define ALLOWED_ON_ABSENT_FS 2 |
b591480b BF |
846 | }; |
847 | ||
848 | static struct nfsd4_operation nfsd4_ops[]; | |
849 | ||
1da177e4 LT |
850 | /* |
851 | * COMPOUND call. | |
852 | */ | |
7111c66e | 853 | static __be32 |
1da177e4 LT |
854 | nfsd4_proc_compound(struct svc_rqst *rqstp, |
855 | struct nfsd4_compoundargs *args, | |
856 | struct nfsd4_compoundres *resp) | |
857 | { | |
858 | struct nfsd4_op *op; | |
b591480b | 859 | struct nfsd4_operation *opdesc; |
ca364317 | 860 | struct nfsd4_compound_state *cstate = NULL; |
e5710199 | 861 | int slack_bytes; |
b37ad28b | 862 | __be32 status; |
1da177e4 LT |
863 | |
864 | status = nfserr_resource; | |
ca364317 BF |
865 | cstate = cstate_alloc(); |
866 | if (cstate == NULL) | |
1da177e4 | 867 | goto out; |
1da177e4 LT |
868 | |
869 | resp->xbuf = &rqstp->rq_res; | |
870 | resp->p = rqstp->rq_res.head[0].iov_base + rqstp->rq_res.head[0].iov_len; | |
871 | resp->tagp = resp->p; | |
872 | /* reserve space for: taglen, tag, and opcnt */ | |
873 | resp->p += 2 + XDR_QUADLEN(args->taglen); | |
874 | resp->end = rqstp->rq_res.head[0].iov_base + PAGE_SIZE; | |
875 | resp->taglen = args->taglen; | |
876 | resp->tag = args->tag; | |
877 | resp->opcnt = 0; | |
878 | resp->rqstp = rqstp; | |
879 | ||
880 | /* | |
881 | * According to RFC3010, this takes precedence over all other errors. | |
882 | */ | |
883 | status = nfserr_minor_vers_mismatch; | |
884 | if (args->minorversion > NFSD_SUPPORTED_MINOR_VERSION) | |
885 | goto out; | |
886 | ||
887 | status = nfs_ok; | |
888 | while (!status && resp->opcnt < args->opcnt) { | |
889 | op = &args->ops[resp->opcnt++]; | |
890 | ||
fd445277 BF |
891 | dprintk("nfsv4 compound op #%d: %d\n", resp->opcnt, op->opnum); |
892 | ||
1da177e4 LT |
893 | /* |
894 | * The XDR decode routines may have pre-set op->status; | |
895 | * for example, if there is a miscellaneous XDR error | |
896 | * it will be set to nfserr_bad_xdr. | |
897 | */ | |
898 | if (op->status) | |
899 | goto encode_op; | |
900 | ||
901 | /* We must be able to encode a successful response to | |
902 | * this operation, with enough room left over to encode a | |
903 | * failed response to the next operation. If we don't | |
904 | * have enough room, fail with ERR_RESOURCE. | |
905 | */ | |
e5710199 BF |
906 | slack_bytes = (char *)resp->end - (char *)resp->p; |
907 | if (slack_bytes < COMPOUND_SLACK_SPACE | |
908 | + COMPOUND_ERR_SLACK_SPACE) { | |
909 | BUG_ON(slack_bytes < COMPOUND_ERR_SLACK_SPACE); | |
1da177e4 LT |
910 | op->status = nfserr_resource; |
911 | goto encode_op; | |
912 | } | |
913 | ||
b591480b BF |
914 | opdesc = &nfsd4_ops[op->opnum]; |
915 | ||
ca364317 | 916 | if (!cstate->current_fh.fh_dentry) { |
27d630ec | 917 | if (!(opdesc->op_flags & ALLOWED_WITHOUT_FH)) { |
42ca0993 BF |
918 | op->status = nfserr_nofilehandle; |
919 | goto encode_op; | |
920 | } | |
eeac294e BF |
921 | } else if (cstate->current_fh.fh_export->ex_fslocs.migrated && |
922 | !(opdesc->op_flags & ALLOWED_ON_ABSENT_FS)) { | |
42ca0993 | 923 | op->status = nfserr_moved; |
1da177e4 LT |
924 | goto encode_op; |
925 | } | |
b591480b BF |
926 | |
927 | if (opdesc->op_func) | |
928 | op->status = opdesc->op_func(rqstp, cstate, &op->u); | |
929 | else | |
1da177e4 | 930 | BUG_ON(op->status == nfs_ok); |
1da177e4 LT |
931 | |
932 | encode_op: | |
a90b061c | 933 | if (op->status == nfserr_replay_me) { |
a4f1706a | 934 | op->replay = &cstate->replay_owner->so_replay; |
1da177e4 LT |
935 | nfsd4_encode_replay(resp, op); |
936 | status = op->status = op->replay->rp_status; | |
937 | } else { | |
938 | nfsd4_encode_operation(resp, op); | |
939 | status = op->status; | |
940 | } | |
a4f1706a BF |
941 | if (cstate->replay_owner) { |
942 | nfs4_put_stateowner(cstate->replay_owner); | |
943 | cstate->replay_owner = NULL; | |
1da177e4 | 944 | } |
7e06b7f9 N |
945 | /* XXX Ugh, we need to get rid of this kind of special case: */ |
946 | if (op->opnum == OP_READ && op->u.read.rd_filp) | |
947 | fput(op->u.read.rd_filp); | |
e2b20950 SA |
948 | |
949 | nfsd4_increment_op_stats(op->opnum); | |
1da177e4 LT |
950 | } |
951 | ||
952 | out: | |
953 | nfsd4_release_compoundargs(args); | |
ca364317 | 954 | cstate_free(cstate); |
1da177e4 LT |
955 | return status; |
956 | } | |
957 | ||
b591480b BF |
958 | static struct nfsd4_operation nfsd4_ops[OP_RELEASE_LOCKOWNER+1] = { |
959 | [OP_ACCESS] = { | |
960 | .op_func = (nfsd4op_func)nfsd4_access, | |
961 | }, | |
962 | [OP_CLOSE] = { | |
963 | .op_func = (nfsd4op_func)nfsd4_close, | |
964 | }, | |
965 | [OP_COMMIT] = { | |
966 | .op_func = (nfsd4op_func)nfsd4_commit, | |
967 | }, | |
968 | [OP_CREATE] = { | |
969 | .op_func = (nfsd4op_func)nfsd4_create, | |
970 | }, | |
971 | [OP_DELEGRETURN] = { | |
972 | .op_func = (nfsd4op_func)nfsd4_delegreturn, | |
973 | }, | |
974 | [OP_GETATTR] = { | |
975 | .op_func = (nfsd4op_func)nfsd4_getattr, | |
eeac294e | 976 | .op_flags = ALLOWED_ON_ABSENT_FS, |
b591480b BF |
977 | }, |
978 | [OP_GETFH] = { | |
979 | .op_func = (nfsd4op_func)nfsd4_getfh, | |
980 | }, | |
981 | [OP_LINK] = { | |
982 | .op_func = (nfsd4op_func)nfsd4_link, | |
983 | }, | |
984 | [OP_LOCK] = { | |
985 | .op_func = (nfsd4op_func)nfsd4_lock, | |
986 | }, | |
987 | [OP_LOCKT] = { | |
988 | .op_func = (nfsd4op_func)nfsd4_lockt, | |
989 | }, | |
990 | [OP_LOCKU] = { | |
991 | .op_func = (nfsd4op_func)nfsd4_locku, | |
992 | }, | |
993 | [OP_LOOKUP] = { | |
994 | .op_func = (nfsd4op_func)nfsd4_lookup, | |
995 | }, | |
996 | [OP_LOOKUPP] = { | |
997 | .op_func = (nfsd4op_func)nfsd4_lookupp, | |
998 | }, | |
999 | [OP_NVERIFY] = { | |
1000 | .op_func = (nfsd4op_func)nfsd4_nverify, | |
1001 | }, | |
1002 | [OP_OPEN] = { | |
1003 | .op_func = (nfsd4op_func)nfsd4_open, | |
1004 | }, | |
1005 | [OP_OPEN_CONFIRM] = { | |
1006 | .op_func = (nfsd4op_func)nfsd4_open_confirm, | |
1007 | }, | |
1008 | [OP_OPEN_DOWNGRADE] = { | |
1009 | .op_func = (nfsd4op_func)nfsd4_open_downgrade, | |
1010 | }, | |
1011 | [OP_PUTFH] = { | |
1012 | .op_func = (nfsd4op_func)nfsd4_putfh, | |
27d630ec | 1013 | .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS, |
b591480b | 1014 | }, |
eeac294e BF |
1015 | [OP_PUTPUBFH] = { |
1016 | /* unsupported; just for future reference: */ | |
27d630ec | 1017 | .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS, |
eeac294e | 1018 | }, |
b591480b BF |
1019 | [OP_PUTROOTFH] = { |
1020 | .op_func = (nfsd4op_func)nfsd4_putrootfh, | |
27d630ec | 1021 | .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS, |
b591480b BF |
1022 | }, |
1023 | [OP_READ] = { | |
1024 | .op_func = (nfsd4op_func)nfsd4_read, | |
1025 | }, | |
1026 | [OP_READDIR] = { | |
1027 | .op_func = (nfsd4op_func)nfsd4_readdir, | |
1028 | }, | |
1029 | [OP_READLINK] = { | |
1030 | .op_func = (nfsd4op_func)nfsd4_readlink, | |
1031 | }, | |
1032 | [OP_REMOVE] = { | |
1033 | .op_func = (nfsd4op_func)nfsd4_remove, | |
1034 | }, | |
1035 | [OP_RENAME] = { | |
1036 | .op_func = (nfsd4op_func)nfsd4_rename, | |
1037 | }, | |
1038 | [OP_RENEW] = { | |
1039 | .op_func = (nfsd4op_func)nfsd4_renew, | |
27d630ec | 1040 | .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS, |
b591480b BF |
1041 | }, |
1042 | [OP_RESTOREFH] = { | |
1043 | .op_func = (nfsd4op_func)nfsd4_restorefh, | |
27d630ec | 1044 | .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS, |
b591480b BF |
1045 | }, |
1046 | [OP_SAVEFH] = { | |
1047 | .op_func = (nfsd4op_func)nfsd4_savefh, | |
1048 | }, | |
dcb488a3 AA |
1049 | [OP_SECINFO] = { |
1050 | .op_func = (nfsd4op_func)nfsd4_secinfo, | |
1051 | }, | |
b591480b BF |
1052 | [OP_SETATTR] = { |
1053 | .op_func = (nfsd4op_func)nfsd4_setattr, | |
1054 | }, | |
1055 | [OP_SETCLIENTID] = { | |
1056 | .op_func = (nfsd4op_func)nfsd4_setclientid, | |
27d630ec | 1057 | .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS, |
b591480b BF |
1058 | }, |
1059 | [OP_SETCLIENTID_CONFIRM] = { | |
1060 | .op_func = (nfsd4op_func)nfsd4_setclientid_confirm, | |
27d630ec | 1061 | .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS, |
b591480b BF |
1062 | }, |
1063 | [OP_VERIFY] = { | |
1064 | .op_func = (nfsd4op_func)nfsd4_verify, | |
1065 | }, | |
1066 | [OP_WRITE] = { | |
1067 | .op_func = (nfsd4op_func)nfsd4_write, | |
1068 | }, | |
1069 | [OP_RELEASE_LOCKOWNER] = { | |
1070 | .op_func = (nfsd4op_func)nfsd4_release_lockowner, | |
27d630ec | 1071 | .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS, |
b591480b BF |
1072 | }, |
1073 | }; | |
1074 | ||
1da177e4 LT |
1075 | #define nfs4svc_decode_voidargs NULL |
1076 | #define nfs4svc_release_void NULL | |
1077 | #define nfsd4_voidres nfsd4_voidargs | |
1078 | #define nfs4svc_release_compound NULL | |
1079 | struct nfsd4_voidargs { int dummy; }; | |
1080 | ||
1081 | #define PROC(name, argt, rest, relt, cache, respsize) \ | |
1082 | { (svc_procfunc) nfsd4_proc_##name, \ | |
1083 | (kxdrproc_t) nfs4svc_decode_##argt##args, \ | |
1084 | (kxdrproc_t) nfs4svc_encode_##rest##res, \ | |
1085 | (kxdrproc_t) nfs4svc_release_##relt, \ | |
1086 | sizeof(struct nfsd4_##argt##args), \ | |
1087 | sizeof(struct nfsd4_##rest##res), \ | |
1088 | 0, \ | |
1089 | cache, \ | |
1090 | respsize, \ | |
1091 | } | |
1092 | ||
1093 | /* | |
1094 | * TODO: At the present time, the NFSv4 server does not do XID caching | |
1095 | * of requests. Implementing XID caching would not be a serious problem, | |
1096 | * although it would require a mild change in interfaces since one | |
1097 | * doesn't know whether an NFSv4 request is idempotent until after the | |
1098 | * XDR decode. However, XID caching totally confuses pynfs (Peter | |
1099 | * Astrand's regression testsuite for NFSv4 servers), which reuses | |
1100 | * XID's liberally, so I've left it unimplemented until pynfs generates | |
1101 | * better XID's. | |
1102 | */ | |
1103 | static struct svc_procedure nfsd_procedures4[2] = { | |
1104 | PROC(null, void, void, void, RC_NOCACHE, 1), | |
7775f4c8 | 1105 | PROC(compound, compound, compound, compound, RC_NOCACHE, NFSD_BUFSIZE/4) |
1da177e4 LT |
1106 | }; |
1107 | ||
1108 | struct svc_version nfsd_version4 = { | |
1109 | .vs_vers = 4, | |
1110 | .vs_nproc = 2, | |
1111 | .vs_proc = nfsd_procedures4, | |
1112 | .vs_dispatch = nfsd_dispatch, | |
1113 | .vs_xdrsize = NFS4_SVC_XDRSIZE, | |
1114 | }; | |
1115 | ||
1116 | /* | |
1117 | * Local variables: | |
1118 | * c-basic-offset: 8 | |
1119 | * End: | |
1120 | */ |