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Commit | Line | Data |
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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. | |
36 | * | |
37 | * Note: some routines in this file are just trivial wrappers | |
38 | * (e.g. nfsd4_lookup()) defined solely for the sake of consistent | |
39 | * naming. Since all such routines have been declared "inline", | |
40 | * there shouldn't be any associated overhead. At some point in | |
41 | * the future, I might inline these "by hand" to clean up a | |
42 | * little. | |
43 | */ | |
44 | ||
45 | #include <linux/param.h> | |
46 | #include <linux/major.h> | |
47 | #include <linux/slab.h> | |
7e06b7f9 | 48 | #include <linux/file.h> |
1da177e4 LT |
49 | |
50 | #include <linux/sunrpc/svc.h> | |
51 | #include <linux/nfsd/nfsd.h> | |
52 | #include <linux/nfsd/cache.h> | |
53 | #include <linux/nfs4.h> | |
54 | #include <linux/nfsd/state.h> | |
55 | #include <linux/nfsd/xdr4.h> | |
56 | #include <linux/nfs4_acl.h> | |
57 | ||
58 | #define NFSDDBG_FACILITY NFSDDBG_PROC | |
59 | ||
60 | static inline void | |
61 | fh_dup2(struct svc_fh *dst, struct svc_fh *src) | |
62 | { | |
63 | fh_put(dst); | |
64 | dget(src->fh_dentry); | |
65 | if (src->fh_export) | |
66 | cache_get(&src->fh_export->h); | |
67 | *dst = *src; | |
68 | } | |
69 | ||
b37ad28b | 70 | static __be32 |
dc730e17 | 71 | do_open_permission(struct svc_rqst *rqstp, struct svc_fh *current_fh, struct nfsd4_open *open, int accmode) |
1da177e4 | 72 | { |
b37ad28b | 73 | __be32 status; |
1da177e4 LT |
74 | |
75 | if (open->op_truncate && | |
76 | !(open->op_share_access & NFS4_SHARE_ACCESS_WRITE)) | |
77 | return nfserr_inval; | |
78 | ||
1da177e4 | 79 | if (open->op_share_access & NFS4_SHARE_ACCESS_READ) |
dc730e17 | 80 | accmode |= MAY_READ; |
9801d8a3 | 81 | if (open->op_share_access & NFS4_SHARE_ACCESS_WRITE) |
1da177e4 | 82 | accmode |= (MAY_WRITE | MAY_TRUNC); |
9801d8a3 BF |
83 | if (open->op_share_deny & NFS4_SHARE_DENY_WRITE) |
84 | accmode |= MAY_WRITE; | |
1da177e4 LT |
85 | |
86 | status = fh_verify(rqstp, current_fh, S_IFREG, accmode); | |
87 | ||
88 | return status; | |
89 | } | |
90 | ||
b37ad28b | 91 | static __be32 |
1da177e4 LT |
92 | do_open_lookup(struct svc_rqst *rqstp, struct svc_fh *current_fh, struct nfsd4_open *open) |
93 | { | |
94 | struct svc_fh resfh; | |
b37ad28b | 95 | __be32 status; |
81ac95c5 | 96 | int created = 0; |
1da177e4 LT |
97 | |
98 | fh_init(&resfh, NFS4_FHSIZE); | |
99 | open->op_truncate = 0; | |
100 | ||
101 | if (open->op_create) { | |
102 | /* | |
103 | * Note: create modes (UNCHECKED,GUARDED...) are the same | |
104 | * in NFSv4 as in v3. | |
105 | */ | |
106 | status = nfsd_create_v3(rqstp, current_fh, open->op_fname.data, | |
107 | open->op_fname.len, &open->op_iattr, | |
108 | &resfh, open->op_createmode, | |
81ac95c5 | 109 | (u32 *)open->op_verf.data, &open->op_truncate, &created); |
af85852d | 110 | } else { |
1da177e4 LT |
111 | status = nfsd_lookup(rqstp, current_fh, |
112 | open->op_fname.data, open->op_fname.len, &resfh); | |
113 | fh_unlock(current_fh); | |
114 | } | |
af85852d BF |
115 | if (status) |
116 | goto out; | |
1da177e4 | 117 | |
af85852d | 118 | set_change_info(&open->op_cinfo, current_fh); |
1da177e4 | 119 | |
af85852d BF |
120 | /* set reply cache */ |
121 | fh_dup2(current_fh, &resfh); | |
122 | open->op_stateowner->so_replay.rp_openfh_len = resfh.fh_handle.fh_size; | |
123 | memcpy(open->op_stateowner->so_replay.rp_openfh, | |
124 | &resfh.fh_handle.fh_base, resfh.fh_handle.fh_size); | |
1da177e4 | 125 | |
81ac95c5 BF |
126 | if (!created) |
127 | status = do_open_permission(rqstp, current_fh, open, MAY_NOP); | |
1da177e4 | 128 | |
af85852d | 129 | out: |
1da177e4 LT |
130 | fh_put(&resfh); |
131 | return status; | |
132 | } | |
133 | ||
b37ad28b | 134 | static __be32 |
1da177e4 LT |
135 | do_open_fhandle(struct svc_rqst *rqstp, struct svc_fh *current_fh, struct nfsd4_open *open) |
136 | { | |
b37ad28b | 137 | __be32 status; |
1da177e4 LT |
138 | |
139 | /* Only reclaims from previously confirmed clients are valid */ | |
140 | if ((status = nfs4_check_open_reclaim(&open->op_clientid))) | |
141 | return status; | |
142 | ||
143 | /* We don't know the target directory, and therefore can not | |
144 | * set the change info | |
145 | */ | |
146 | ||
147 | memset(&open->op_cinfo, 0, sizeof(struct nfsd4_change_info)); | |
148 | ||
149 | /* set replay cache */ | |
150 | open->op_stateowner->so_replay.rp_openfh_len = current_fh->fh_handle.fh_size; | |
151 | memcpy(open->op_stateowner->so_replay.rp_openfh, | |
152 | ¤t_fh->fh_handle.fh_base, | |
153 | current_fh->fh_handle.fh_size); | |
154 | ||
155 | open->op_truncate = (open->op_iattr.ia_valid & ATTR_SIZE) && | |
156 | (open->op_iattr.ia_size == 0); | |
157 | ||
dc730e17 | 158 | status = do_open_permission(rqstp, current_fh, open, MAY_OWNER_OVERRIDE); |
1da177e4 LT |
159 | |
160 | return status; | |
161 | } | |
162 | ||
163 | ||
b37ad28b | 164 | static inline __be32 |
ca364317 BF |
165 | nfsd4_open(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
166 | struct nfsd4_open *open, struct nfs4_stateowner **replay_owner) | |
1da177e4 | 167 | { |
b37ad28b | 168 | __be32 status; |
1da177e4 LT |
169 | dprintk("NFSD: nfsd4_open filename %.*s op_stateowner %p\n", |
170 | (int)open->op_fname.len, open->op_fname.data, | |
171 | open->op_stateowner); | |
172 | ||
1da177e4 LT |
173 | /* This check required by spec. */ |
174 | if (open->op_create && open->op_claim_type != NFS4_OPEN_CLAIM_NULL) | |
175 | return nfserr_inval; | |
176 | ||
177 | nfs4_lock_state(); | |
178 | ||
179 | /* check seqid for replay. set nfs4_owner */ | |
180 | status = nfsd4_process_open1(open); | |
a90b061c | 181 | if (status == nfserr_replay_me) { |
1da177e4 | 182 | struct nfs4_replay *rp = &open->op_stateowner->so_replay; |
ca364317 BF |
183 | fh_put(&cstate->current_fh); |
184 | cstate->current_fh.fh_handle.fh_size = rp->rp_openfh_len; | |
185 | memcpy(&cstate->current_fh.fh_handle.fh_base, rp->rp_openfh, | |
1da177e4 | 186 | rp->rp_openfh_len); |
ca364317 | 187 | status = fh_verify(rqstp, &cstate->current_fh, 0, MAY_NOP); |
1da177e4 LT |
188 | if (status) |
189 | dprintk("nfsd4_open: replay failed" | |
190 | " restoring previous filehandle\n"); | |
191 | else | |
a90b061c | 192 | status = nfserr_replay_me; |
1da177e4 LT |
193 | } |
194 | if (status) | |
195 | goto out; | |
fb553c0f BF |
196 | |
197 | /* Openowner is now set, so sequence id will get bumped. Now we need | |
198 | * these checks before we do any creates: */ | |
cbd0d51a | 199 | status = nfserr_grace; |
fb553c0f | 200 | if (nfs4_in_grace() && open->op_claim_type != NFS4_OPEN_CLAIM_PREVIOUS) |
cbd0d51a BF |
201 | goto out; |
202 | status = nfserr_no_grace; | |
fb553c0f | 203 | if (!nfs4_in_grace() && open->op_claim_type == NFS4_OPEN_CLAIM_PREVIOUS) |
cbd0d51a | 204 | goto out; |
fb553c0f | 205 | |
1da177e4 | 206 | switch (open->op_claim_type) { |
0dd3c192 N |
207 | case NFS4_OPEN_CLAIM_DELEGATE_CUR: |
208 | status = nfserr_inval; | |
209 | if (open->op_create) | |
210 | goto out; | |
211 | /* fall through */ | |
1da177e4 LT |
212 | case NFS4_OPEN_CLAIM_NULL: |
213 | /* | |
214 | * (1) set CURRENT_FH to the file being opened, | |
215 | * creating it if necessary, (2) set open->op_cinfo, | |
216 | * (3) set open->op_truncate if the file is to be | |
217 | * truncated after opening, (4) do permission checking. | |
218 | */ | |
ca364317 BF |
219 | status = do_open_lookup(rqstp, &cstate->current_fh, |
220 | open); | |
1da177e4 LT |
221 | if (status) |
222 | goto out; | |
223 | break; | |
224 | case NFS4_OPEN_CLAIM_PREVIOUS: | |
a525825d | 225 | open->op_stateowner->so_confirmed = 1; |
1da177e4 LT |
226 | /* |
227 | * The CURRENT_FH is already set to the file being | |
228 | * opened. (1) set open->op_cinfo, (2) set | |
229 | * open->op_truncate if the file is to be truncated | |
230 | * after opening, (3) do permission checking. | |
231 | */ | |
ca364317 BF |
232 | status = do_open_fhandle(rqstp, &cstate->current_fh, |
233 | open); | |
1da177e4 LT |
234 | if (status) |
235 | goto out; | |
236 | break; | |
1da177e4 | 237 | case NFS4_OPEN_CLAIM_DELEGATE_PREV: |
a525825d | 238 | open->op_stateowner->so_confirmed = 1; |
1da177e4 LT |
239 | printk("NFSD: unsupported OPEN claim type %d\n", |
240 | open->op_claim_type); | |
241 | status = nfserr_notsupp; | |
242 | goto out; | |
243 | default: | |
244 | printk("NFSD: Invalid OPEN claim type %d\n", | |
245 | open->op_claim_type); | |
246 | status = nfserr_inval; | |
247 | goto out; | |
248 | } | |
249 | /* | |
250 | * nfsd4_process_open2() does the actual opening of the file. If | |
251 | * successful, it (1) truncates the file if open->op_truncate was | |
252 | * set, (2) sets open->op_stateid, (3) sets open->op_delegation. | |
253 | */ | |
ca364317 | 254 | status = nfsd4_process_open2(rqstp, &cstate->current_fh, open); |
1da177e4 | 255 | out: |
f2327d9a | 256 | if (open->op_stateowner) { |
1da177e4 | 257 | nfs4_get_stateowner(open->op_stateowner); |
f2327d9a NB |
258 | *replay_owner = open->op_stateowner; |
259 | } | |
1da177e4 LT |
260 | nfs4_unlock_state(); |
261 | return status; | |
262 | } | |
263 | ||
264 | /* | |
265 | * filehandle-manipulating ops. | |
266 | */ | |
b37ad28b | 267 | static inline __be32 |
ca364317 | 268 | nfsd4_getfh(struct nfsd4_compound_state *cstate, struct svc_fh **getfh) |
1da177e4 | 269 | { |
ca364317 | 270 | if (!cstate->current_fh.fh_dentry) |
1da177e4 LT |
271 | return nfserr_nofilehandle; |
272 | ||
ca364317 | 273 | *getfh = &cstate->current_fh; |
1da177e4 LT |
274 | return nfs_ok; |
275 | } | |
276 | ||
b37ad28b | 277 | static inline __be32 |
ca364317 BF |
278 | nfsd4_putfh(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
279 | struct nfsd4_putfh *putfh) | |
1da177e4 | 280 | { |
ca364317 BF |
281 | fh_put(&cstate->current_fh); |
282 | cstate->current_fh.fh_handle.fh_size = putfh->pf_fhlen; | |
283 | memcpy(&cstate->current_fh.fh_handle.fh_base, putfh->pf_fhval, | |
284 | putfh->pf_fhlen); | |
285 | return fh_verify(rqstp, &cstate->current_fh, 0, MAY_NOP); | |
1da177e4 LT |
286 | } |
287 | ||
b37ad28b | 288 | static inline __be32 |
ca364317 | 289 | nfsd4_putrootfh(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate) |
1da177e4 | 290 | { |
b37ad28b | 291 | __be32 status; |
1da177e4 | 292 | |
ca364317 BF |
293 | fh_put(&cstate->current_fh); |
294 | status = exp_pseudoroot(rqstp->rq_client, &cstate->current_fh, | |
1da177e4 | 295 | &rqstp->rq_chandle); |
1da177e4 LT |
296 | return status; |
297 | } | |
298 | ||
b37ad28b | 299 | static inline __be32 |
ca364317 | 300 | nfsd4_restorefh(struct nfsd4_compound_state *cstate) |
1da177e4 | 301 | { |
ca364317 | 302 | if (!cstate->save_fh.fh_dentry) |
1da177e4 LT |
303 | return nfserr_restorefh; |
304 | ||
ca364317 | 305 | fh_dup2(&cstate->current_fh, &cstate->save_fh); |
1da177e4 LT |
306 | return nfs_ok; |
307 | } | |
308 | ||
b37ad28b | 309 | static inline __be32 |
ca364317 | 310 | nfsd4_savefh(struct nfsd4_compound_state *cstate) |
1da177e4 | 311 | { |
ca364317 | 312 | if (!cstate->current_fh.fh_dentry) |
1da177e4 LT |
313 | return nfserr_nofilehandle; |
314 | ||
ca364317 | 315 | fh_dup2(&cstate->save_fh, &cstate->current_fh); |
1da177e4 LT |
316 | return nfs_ok; |
317 | } | |
318 | ||
319 | /* | |
320 | * misc nfsv4 ops | |
321 | */ | |
b37ad28b | 322 | static inline __be32 |
ca364317 BF |
323 | nfsd4_access(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
324 | struct nfsd4_access *access) | |
1da177e4 LT |
325 | { |
326 | if (access->ac_req_access & ~NFS3_ACCESS_FULL) | |
327 | return nfserr_inval; | |
328 | ||
329 | access->ac_resp_access = access->ac_req_access; | |
ca364317 BF |
330 | return nfsd_access(rqstp, &cstate->current_fh, &access->ac_resp_access, |
331 | &access->ac_supported); | |
1da177e4 LT |
332 | } |
333 | ||
b37ad28b | 334 | static inline __be32 |
ca364317 BF |
335 | nfsd4_commit(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
336 | struct nfsd4_commit *commit) | |
1da177e4 | 337 | { |
b37ad28b | 338 | __be32 status; |
1da177e4 LT |
339 | |
340 | u32 *p = (u32 *)commit->co_verf.data; | |
341 | *p++ = nfssvc_boot.tv_sec; | |
342 | *p++ = nfssvc_boot.tv_usec; | |
343 | ||
ca364317 BF |
344 | status = nfsd_commit(rqstp, &cstate->current_fh, commit->co_offset, |
345 | commit->co_count); | |
1da177e4 LT |
346 | if (status == nfserr_symlink) |
347 | status = nfserr_inval; | |
348 | return status; | |
349 | } | |
350 | ||
b37ad28b | 351 | static __be32 |
ca364317 BF |
352 | nfsd4_create(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
353 | struct nfsd4_create *create) | |
1da177e4 LT |
354 | { |
355 | struct svc_fh resfh; | |
b37ad28b | 356 | __be32 status; |
1da177e4 LT |
357 | dev_t rdev; |
358 | ||
359 | fh_init(&resfh, NFS4_FHSIZE); | |
360 | ||
ca364317 | 361 | status = fh_verify(rqstp, &cstate->current_fh, S_IFDIR, MAY_CREATE); |
1da177e4 LT |
362 | if (status == nfserr_symlink) |
363 | status = nfserr_notdir; | |
364 | if (status) | |
365 | return status; | |
366 | ||
367 | switch (create->cr_type) { | |
368 | case NF4LNK: | |
369 | /* ugh! we have to null-terminate the linktext, or | |
370 | * vfs_symlink() will choke. it is always safe to | |
371 | * null-terminate by brute force, since at worst we | |
372 | * will overwrite the first byte of the create namelen | |
373 | * in the XDR buffer, which has already been extracted | |
374 | * during XDR decode. | |
375 | */ | |
376 | create->cr_linkname[create->cr_linklen] = 0; | |
377 | ||
ca364317 BF |
378 | status = nfsd_symlink(rqstp, &cstate->current_fh, |
379 | create->cr_name, create->cr_namelen, | |
380 | create->cr_linkname, create->cr_linklen, | |
381 | &resfh, &create->cr_iattr); | |
1da177e4 LT |
382 | break; |
383 | ||
384 | case NF4BLK: | |
385 | rdev = MKDEV(create->cr_specdata1, create->cr_specdata2); | |
386 | if (MAJOR(rdev) != create->cr_specdata1 || | |
387 | MINOR(rdev) != create->cr_specdata2) | |
388 | return nfserr_inval; | |
ca364317 BF |
389 | status = nfsd_create(rqstp, &cstate->current_fh, |
390 | create->cr_name, create->cr_namelen, | |
391 | &create->cr_iattr, S_IFBLK, rdev, &resfh); | |
1da177e4 LT |
392 | break; |
393 | ||
394 | case NF4CHR: | |
395 | rdev = MKDEV(create->cr_specdata1, create->cr_specdata2); | |
396 | if (MAJOR(rdev) != create->cr_specdata1 || | |
397 | MINOR(rdev) != create->cr_specdata2) | |
398 | return nfserr_inval; | |
ca364317 BF |
399 | status = nfsd_create(rqstp, &cstate->current_fh, |
400 | create->cr_name, create->cr_namelen, | |
401 | &create->cr_iattr,S_IFCHR, rdev, &resfh); | |
1da177e4 LT |
402 | break; |
403 | ||
404 | case NF4SOCK: | |
ca364317 BF |
405 | status = nfsd_create(rqstp, &cstate->current_fh, |
406 | create->cr_name, create->cr_namelen, | |
407 | &create->cr_iattr, S_IFSOCK, 0, &resfh); | |
1da177e4 LT |
408 | break; |
409 | ||
410 | case NF4FIFO: | |
ca364317 BF |
411 | status = nfsd_create(rqstp, &cstate->current_fh, |
412 | create->cr_name, create->cr_namelen, | |
413 | &create->cr_iattr, S_IFIFO, 0, &resfh); | |
1da177e4 LT |
414 | break; |
415 | ||
416 | case NF4DIR: | |
417 | create->cr_iattr.ia_valid &= ~ATTR_SIZE; | |
ca364317 BF |
418 | status = nfsd_create(rqstp, &cstate->current_fh, |
419 | create->cr_name, create->cr_namelen, | |
420 | &create->cr_iattr, S_IFDIR, 0, &resfh); | |
1da177e4 LT |
421 | break; |
422 | ||
423 | default: | |
424 | status = nfserr_badtype; | |
425 | } | |
426 | ||
427 | if (!status) { | |
ca364317 BF |
428 | fh_unlock(&cstate->current_fh); |
429 | set_change_info(&create->cr_cinfo, &cstate->current_fh); | |
430 | fh_dup2(&cstate->current_fh, &resfh); | |
1da177e4 LT |
431 | } |
432 | ||
433 | fh_put(&resfh); | |
434 | return status; | |
435 | } | |
436 | ||
b37ad28b | 437 | static inline __be32 |
ca364317 BF |
438 | nfsd4_getattr(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
439 | struct nfsd4_getattr *getattr) | |
1da177e4 | 440 | { |
b37ad28b | 441 | __be32 status; |
1da177e4 | 442 | |
ca364317 | 443 | status = fh_verify(rqstp, &cstate->current_fh, 0, MAY_NOP); |
1da177e4 LT |
444 | if (status) |
445 | return status; | |
446 | ||
447 | if (getattr->ga_bmval[1] & NFSD_WRITEONLY_ATTRS_WORD1) | |
448 | return nfserr_inval; | |
449 | ||
450 | getattr->ga_bmval[0] &= NFSD_SUPPORTED_ATTRS_WORD0; | |
451 | getattr->ga_bmval[1] &= NFSD_SUPPORTED_ATTRS_WORD1; | |
452 | ||
ca364317 | 453 | getattr->ga_fhp = &cstate->current_fh; |
1da177e4 LT |
454 | return nfs_ok; |
455 | } | |
456 | ||
b37ad28b | 457 | static inline __be32 |
ca364317 BF |
458 | nfsd4_link(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
459 | struct nfsd4_link *link) | |
1da177e4 | 460 | { |
b37ad28b | 461 | __be32 status = nfserr_nofilehandle; |
1da177e4 | 462 | |
ca364317 | 463 | if (!cstate->save_fh.fh_dentry) |
1da177e4 | 464 | return status; |
ca364317 BF |
465 | status = nfsd_link(rqstp, &cstate->current_fh, |
466 | link->li_name, link->li_namelen, &cstate->save_fh); | |
1da177e4 | 467 | if (!status) |
ca364317 | 468 | set_change_info(&link->li_cinfo, &cstate->current_fh); |
1da177e4 LT |
469 | return status; |
470 | } | |
471 | ||
b37ad28b | 472 | static __be32 |
ca364317 | 473 | nfsd4_lookupp(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate) |
1da177e4 LT |
474 | { |
475 | struct svc_fh tmp_fh; | |
b37ad28b | 476 | __be32 ret; |
1da177e4 LT |
477 | |
478 | fh_init(&tmp_fh, NFS4_FHSIZE); | |
479 | if((ret = exp_pseudoroot(rqstp->rq_client, &tmp_fh, | |
480 | &rqstp->rq_chandle)) != 0) | |
481 | return ret; | |
ca364317 | 482 | if (tmp_fh.fh_dentry == cstate->current_fh.fh_dentry) { |
1da177e4 LT |
483 | fh_put(&tmp_fh); |
484 | return nfserr_noent; | |
485 | } | |
486 | fh_put(&tmp_fh); | |
ca364317 BF |
487 | return nfsd_lookup(rqstp, &cstate->current_fh, |
488 | "..", 2, &cstate->current_fh); | |
1da177e4 LT |
489 | } |
490 | ||
b37ad28b | 491 | static inline __be32 |
ca364317 BF |
492 | nfsd4_lookup(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
493 | struct nfsd4_lookup *lookup) | |
1da177e4 | 494 | { |
ca364317 BF |
495 | return nfsd_lookup(rqstp, &cstate->current_fh, |
496 | lookup->lo_name, lookup->lo_len, | |
497 | &cstate->current_fh); | |
1da177e4 LT |
498 | } |
499 | ||
b37ad28b | 500 | static inline __be32 |
ca364317 BF |
501 | nfsd4_read(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
502 | struct nfsd4_read *read) | |
1da177e4 | 503 | { |
b37ad28b | 504 | __be32 status; |
1da177e4 LT |
505 | |
506 | /* no need to check permission - this will be done in nfsd_read() */ | |
507 | ||
7e06b7f9 | 508 | read->rd_filp = NULL; |
1da177e4 LT |
509 | if (read->rd_offset >= OFFSET_MAX) |
510 | return nfserr_inval; | |
511 | ||
512 | nfs4_lock_state(); | |
513 | /* check stateid */ | |
ca364317 BF |
514 | if ((status = nfs4_preprocess_stateid_op(&cstate->current_fh, |
515 | &read->rd_stateid, | |
7e06b7f9 | 516 | CHECK_FH | RD_STATE, &read->rd_filp))) { |
1da177e4 LT |
517 | dprintk("NFSD: nfsd4_read: couldn't process stateid!\n"); |
518 | goto out; | |
519 | } | |
7e06b7f9 N |
520 | if (read->rd_filp) |
521 | get_file(read->rd_filp); | |
1da177e4 LT |
522 | status = nfs_ok; |
523 | out: | |
524 | nfs4_unlock_state(); | |
525 | read->rd_rqstp = rqstp; | |
ca364317 | 526 | read->rd_fhp = &cstate->current_fh; |
1da177e4 LT |
527 | return status; |
528 | } | |
529 | ||
b37ad28b | 530 | static inline __be32 |
ca364317 BF |
531 | nfsd4_readdir(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
532 | struct nfsd4_readdir *readdir) | |
1da177e4 LT |
533 | { |
534 | u64 cookie = readdir->rd_cookie; | |
535 | static const nfs4_verifier zeroverf; | |
536 | ||
537 | /* no need to check permission - this will be done in nfsd_readdir() */ | |
538 | ||
539 | if (readdir->rd_bmval[1] & NFSD_WRITEONLY_ATTRS_WORD1) | |
540 | return nfserr_inval; | |
541 | ||
542 | readdir->rd_bmval[0] &= NFSD_SUPPORTED_ATTRS_WORD0; | |
543 | readdir->rd_bmval[1] &= NFSD_SUPPORTED_ATTRS_WORD1; | |
544 | ||
545 | if ((cookie > ~(u32)0) || (cookie == 1) || (cookie == 2) || | |
546 | (cookie == 0 && memcmp(readdir->rd_verf.data, zeroverf.data, NFS4_VERIFIER_SIZE))) | |
547 | return nfserr_bad_cookie; | |
548 | ||
549 | readdir->rd_rqstp = rqstp; | |
ca364317 | 550 | readdir->rd_fhp = &cstate->current_fh; |
1da177e4 LT |
551 | return nfs_ok; |
552 | } | |
553 | ||
b37ad28b | 554 | static inline __be32 |
ca364317 BF |
555 | nfsd4_readlink(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
556 | struct nfsd4_readlink *readlink) | |
1da177e4 LT |
557 | { |
558 | readlink->rl_rqstp = rqstp; | |
ca364317 | 559 | readlink->rl_fhp = &cstate->current_fh; |
1da177e4 LT |
560 | return nfs_ok; |
561 | } | |
562 | ||
b37ad28b | 563 | static inline __be32 |
ca364317 BF |
564 | nfsd4_remove(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
565 | struct nfsd4_remove *remove) | |
1da177e4 | 566 | { |
b37ad28b | 567 | __be32 status; |
1da177e4 | 568 | |
c815afc7 N |
569 | if (nfs4_in_grace()) |
570 | return nfserr_grace; | |
ca364317 BF |
571 | status = nfsd_unlink(rqstp, &cstate->current_fh, 0, |
572 | remove->rm_name, remove->rm_namelen); | |
1da177e4 LT |
573 | if (status == nfserr_symlink) |
574 | return nfserr_notdir; | |
575 | if (!status) { | |
ca364317 BF |
576 | fh_unlock(&cstate->current_fh); |
577 | set_change_info(&remove->rm_cinfo, &cstate->current_fh); | |
1da177e4 LT |
578 | } |
579 | return status; | |
580 | } | |
581 | ||
b37ad28b | 582 | static inline __be32 |
ca364317 BF |
583 | nfsd4_rename(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
584 | struct nfsd4_rename *rename) | |
1da177e4 | 585 | { |
b37ad28b | 586 | __be32 status = nfserr_nofilehandle; |
1da177e4 | 587 | |
ca364317 | 588 | if (!cstate->save_fh.fh_dentry) |
1da177e4 | 589 | return status; |
ca364317 | 590 | if (nfs4_in_grace() && !(cstate->save_fh.fh_export->ex_flags |
c815afc7 N |
591 | & NFSEXP_NOSUBTREECHECK)) |
592 | return nfserr_grace; | |
ca364317 BF |
593 | status = nfsd_rename(rqstp, &cstate->save_fh, rename->rn_sname, |
594 | rename->rn_snamelen, &cstate->current_fh, | |
1da177e4 LT |
595 | rename->rn_tname, rename->rn_tnamelen); |
596 | ||
597 | /* the underlying filesystem returns different error's than required | |
598 | * by NFSv4. both save_fh and current_fh have been verified.. */ | |
599 | if (status == nfserr_isdir) | |
600 | status = nfserr_exist; | |
601 | else if ((status == nfserr_notdir) && | |
ca364317 BF |
602 | (S_ISDIR(cstate->save_fh.fh_dentry->d_inode->i_mode) && |
603 | S_ISDIR(cstate->current_fh.fh_dentry->d_inode->i_mode))) | |
1da177e4 LT |
604 | status = nfserr_exist; |
605 | else if (status == nfserr_symlink) | |
606 | status = nfserr_notdir; | |
607 | ||
608 | if (!status) { | |
ca364317 BF |
609 | set_change_info(&rename->rn_sinfo, &cstate->current_fh); |
610 | set_change_info(&rename->rn_tinfo, &cstate->save_fh); | |
1da177e4 LT |
611 | } |
612 | return status; | |
613 | } | |
614 | ||
b37ad28b | 615 | static inline __be32 |
ca364317 BF |
616 | nfsd4_setattr(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
617 | struct nfsd4_setattr *setattr) | |
1da177e4 | 618 | { |
b37ad28b | 619 | __be32 status = nfs_ok; |
1da177e4 | 620 | |
1da177e4 LT |
621 | if (setattr->sa_iattr.ia_valid & ATTR_SIZE) { |
622 | nfs4_lock_state(); | |
ca364317 | 623 | status = nfs4_preprocess_stateid_op(&cstate->current_fh, |
375c5547 | 624 | &setattr->sa_stateid, CHECK_FH | WR_STATE, NULL); |
1da177e4 | 625 | nfs4_unlock_state(); |
375c5547 | 626 | if (status) { |
3e3b4800 | 627 | dprintk("NFSD: nfsd4_setattr: couldn't process stateid!\n"); |
375c5547 BF |
628 | return status; |
629 | } | |
1da177e4 LT |
630 | } |
631 | status = nfs_ok; | |
632 | if (setattr->sa_acl != NULL) | |
ca364317 BF |
633 | status = nfsd4_set_nfs4_acl(rqstp, &cstate->current_fh, |
634 | setattr->sa_acl); | |
1da177e4 | 635 | if (status) |
375c5547 | 636 | return status; |
ca364317 | 637 | status = nfsd_setattr(rqstp, &cstate->current_fh, &setattr->sa_iattr, |
1da177e4 | 638 | 0, (time_t)0); |
1da177e4 LT |
639 | return status; |
640 | } | |
641 | ||
b37ad28b | 642 | static inline __be32 |
ca364317 BF |
643 | nfsd4_write(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
644 | struct nfsd4_write *write) | |
1da177e4 LT |
645 | { |
646 | stateid_t *stateid = &write->wr_stateid; | |
647 | struct file *filp = NULL; | |
648 | u32 *p; | |
b37ad28b | 649 | __be32 status = nfs_ok; |
1da177e4 LT |
650 | |
651 | /* no need to check permission - this will be done in nfsd_write() */ | |
652 | ||
653 | if (write->wr_offset >= OFFSET_MAX) | |
654 | return nfserr_inval; | |
655 | ||
656 | nfs4_lock_state(); | |
ca364317 | 657 | status = nfs4_preprocess_stateid_op(&cstate->current_fh, stateid, |
375c5547 | 658 | CHECK_FH | WR_STATE, &filp); |
7e06b7f9 N |
659 | if (filp) |
660 | get_file(filp); | |
1da177e4 LT |
661 | nfs4_unlock_state(); |
662 | ||
375c5547 BF |
663 | if (status) { |
664 | dprintk("NFSD: nfsd4_write: couldn't process stateid!\n"); | |
665 | return status; | |
666 | } | |
667 | ||
1da177e4 LT |
668 | write->wr_bytes_written = write->wr_buflen; |
669 | write->wr_how_written = write->wr_stable_how; | |
670 | p = (u32 *)write->wr_verifier.data; | |
671 | *p++ = nfssvc_boot.tv_sec; | |
672 | *p++ = nfssvc_boot.tv_usec; | |
673 | ||
ca364317 BF |
674 | status = nfsd_write(rqstp, &cstate->current_fh, filp, |
675 | write->wr_offset, rqstp->rq_vec, write->wr_vlen, | |
676 | write->wr_buflen, &write->wr_how_written); | |
7e06b7f9 N |
677 | if (filp) |
678 | fput(filp); | |
1da177e4 LT |
679 | |
680 | if (status == nfserr_symlink) | |
681 | status = nfserr_inval; | |
682 | return status; | |
1da177e4 LT |
683 | } |
684 | ||
685 | /* This routine never returns NFS_OK! If there are no other errors, it | |
686 | * will return NFSERR_SAME or NFSERR_NOT_SAME depending on whether the | |
687 | * attributes matched. VERIFY is implemented by mapping NFSERR_SAME | |
688 | * to NFS_OK after the call; NVERIFY by mapping NFSERR_NOT_SAME to NFS_OK. | |
689 | */ | |
b37ad28b | 690 | static __be32 |
ca364317 BF |
691 | nfsd4_verify(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
692 | struct nfsd4_verify *verify) | |
1da177e4 | 693 | { |
2ebbc012 | 694 | __be32 *buf, *p; |
1da177e4 | 695 | int count; |
b37ad28b | 696 | __be32 status; |
1da177e4 | 697 | |
ca364317 | 698 | status = fh_verify(rqstp, &cstate->current_fh, 0, MAY_NOP); |
1da177e4 LT |
699 | if (status) |
700 | return status; | |
701 | ||
702 | if ((verify->ve_bmval[0] & ~NFSD_SUPPORTED_ATTRS_WORD0) | |
703 | || (verify->ve_bmval[1] & ~NFSD_SUPPORTED_ATTRS_WORD1)) | |
704 | return nfserr_attrnotsupp; | |
705 | if ((verify->ve_bmval[0] & FATTR4_WORD0_RDATTR_ERROR) | |
706 | || (verify->ve_bmval[1] & NFSD_WRITEONLY_ATTRS_WORD1)) | |
707 | return nfserr_inval; | |
708 | if (verify->ve_attrlen & 3) | |
709 | return nfserr_inval; | |
710 | ||
711 | /* count in words: | |
712 | * bitmap_len(1) + bitmap(2) + attr_len(1) = 4 | |
713 | */ | |
714 | count = 4 + (verify->ve_attrlen >> 2); | |
715 | buf = kmalloc(count << 2, GFP_KERNEL); | |
716 | if (!buf) | |
717 | return nfserr_resource; | |
718 | ||
ca364317 BF |
719 | status = nfsd4_encode_fattr(&cstate->current_fh, |
720 | cstate->current_fh.fh_export, | |
721 | cstate->current_fh.fh_dentry, buf, | |
1da177e4 LT |
722 | &count, verify->ve_bmval, |
723 | rqstp); | |
724 | ||
725 | /* this means that nfsd4_encode_fattr() ran out of space */ | |
726 | if (status == nfserr_resource && count == 0) | |
727 | status = nfserr_not_same; | |
728 | if (status) | |
729 | goto out_kfree; | |
730 | ||
731 | p = buf + 3; | |
732 | status = nfserr_not_same; | |
733 | if (ntohl(*p++) != verify->ve_attrlen) | |
734 | goto out_kfree; | |
735 | if (!memcmp(p, verify->ve_attrval, verify->ve_attrlen)) | |
736 | status = nfserr_same; | |
737 | ||
738 | out_kfree: | |
739 | kfree(buf); | |
740 | return status; | |
741 | } | |
742 | ||
743 | /* | |
744 | * NULL call. | |
745 | */ | |
7111c66e | 746 | static __be32 |
1da177e4 LT |
747 | nfsd4_proc_null(struct svc_rqst *rqstp, void *argp, void *resp) |
748 | { | |
749 | return nfs_ok; | |
750 | } | |
751 | ||
e2b20950 SA |
752 | static inline void nfsd4_increment_op_stats(u32 opnum) |
753 | { | |
754 | if (opnum >= FIRST_NFS4_OP && opnum <= LAST_NFS4_OP) | |
755 | nfsdstats.nfs4_opcount[opnum]++; | |
756 | } | |
757 | ||
ca364317 BF |
758 | static void cstate_free(struct nfsd4_compound_state *cstate) |
759 | { | |
760 | if (cstate == NULL) | |
761 | return; | |
762 | fh_put(&cstate->current_fh); | |
763 | fh_put(&cstate->save_fh); | |
764 | kfree(cstate); | |
765 | } | |
766 | ||
767 | static struct nfsd4_compound_state *cstate_alloc(void) | |
768 | { | |
769 | struct nfsd4_compound_state *cstate; | |
770 | ||
771 | cstate = kmalloc(sizeof(struct nfsd4_compound_state), GFP_KERNEL); | |
772 | if (cstate == NULL) | |
773 | return NULL; | |
774 | fh_init(&cstate->current_fh, NFS4_FHSIZE); | |
775 | fh_init(&cstate->save_fh, NFS4_FHSIZE); | |
776 | return cstate; | |
777 | } | |
1da177e4 LT |
778 | |
779 | /* | |
780 | * COMPOUND call. | |
781 | */ | |
7111c66e | 782 | static __be32 |
1da177e4 LT |
783 | nfsd4_proc_compound(struct svc_rqst *rqstp, |
784 | struct nfsd4_compoundargs *args, | |
785 | struct nfsd4_compoundres *resp) | |
786 | { | |
787 | struct nfsd4_op *op; | |
ca364317 | 788 | struct nfsd4_compound_state *cstate = NULL; |
1da177e4 | 789 | struct nfs4_stateowner *replay_owner = NULL; |
e5710199 | 790 | int slack_bytes; |
b37ad28b | 791 | __be32 status; |
1da177e4 LT |
792 | |
793 | status = nfserr_resource; | |
ca364317 BF |
794 | cstate = cstate_alloc(); |
795 | if (cstate == NULL) | |
1da177e4 | 796 | goto out; |
1da177e4 LT |
797 | |
798 | resp->xbuf = &rqstp->rq_res; | |
799 | resp->p = rqstp->rq_res.head[0].iov_base + rqstp->rq_res.head[0].iov_len; | |
800 | resp->tagp = resp->p; | |
801 | /* reserve space for: taglen, tag, and opcnt */ | |
802 | resp->p += 2 + XDR_QUADLEN(args->taglen); | |
803 | resp->end = rqstp->rq_res.head[0].iov_base + PAGE_SIZE; | |
804 | resp->taglen = args->taglen; | |
805 | resp->tag = args->tag; | |
806 | resp->opcnt = 0; | |
807 | resp->rqstp = rqstp; | |
808 | ||
809 | /* | |
810 | * According to RFC3010, this takes precedence over all other errors. | |
811 | */ | |
812 | status = nfserr_minor_vers_mismatch; | |
813 | if (args->minorversion > NFSD_SUPPORTED_MINOR_VERSION) | |
814 | goto out; | |
815 | ||
816 | status = nfs_ok; | |
817 | while (!status && resp->opcnt < args->opcnt) { | |
818 | op = &args->ops[resp->opcnt++]; | |
819 | ||
fd445277 BF |
820 | dprintk("nfsv4 compound op #%d: %d\n", resp->opcnt, op->opnum); |
821 | ||
1da177e4 LT |
822 | /* |
823 | * The XDR decode routines may have pre-set op->status; | |
824 | * for example, if there is a miscellaneous XDR error | |
825 | * it will be set to nfserr_bad_xdr. | |
826 | */ | |
827 | if (op->status) | |
828 | goto encode_op; | |
829 | ||
830 | /* We must be able to encode a successful response to | |
831 | * this operation, with enough room left over to encode a | |
832 | * failed response to the next operation. If we don't | |
833 | * have enough room, fail with ERR_RESOURCE. | |
834 | */ | |
e5710199 BF |
835 | slack_bytes = (char *)resp->end - (char *)resp->p; |
836 | if (slack_bytes < COMPOUND_SLACK_SPACE | |
837 | + COMPOUND_ERR_SLACK_SPACE) { | |
838 | BUG_ON(slack_bytes < COMPOUND_ERR_SLACK_SPACE); | |
1da177e4 LT |
839 | op->status = nfserr_resource; |
840 | goto encode_op; | |
841 | } | |
842 | ||
843 | /* All operations except RENEW, SETCLIENTID, RESTOREFH | |
844 | * SETCLIENTID_CONFIRM, PUTFH and PUTROOTFH | |
845 | * require a valid current filehandle | |
1da177e4 | 846 | */ |
ca364317 | 847 | if (!cstate->current_fh.fh_dentry) { |
42ca0993 BF |
848 | if (!((op->opnum == OP_PUTFH) || |
849 | (op->opnum == OP_PUTROOTFH) || | |
850 | (op->opnum == OP_SETCLIENTID) || | |
851 | (op->opnum == OP_SETCLIENTID_CONFIRM) || | |
852 | (op->opnum == OP_RENEW) || | |
853 | (op->opnum == OP_RESTOREFH) || | |
854 | (op->opnum == OP_RELEASE_LOCKOWNER))) { | |
855 | op->status = nfserr_nofilehandle; | |
856 | goto encode_op; | |
857 | } | |
858 | } | |
859 | /* Check must be done at start of each operation, except | |
860 | * for GETATTR and ops not listed as returning NFS4ERR_MOVED | |
861 | */ | |
ca364317 | 862 | else if (cstate->current_fh.fh_export->ex_fslocs.migrated && |
42ca0993 BF |
863 | !((op->opnum == OP_GETATTR) || |
864 | (op->opnum == OP_PUTROOTFH) || | |
865 | (op->opnum == OP_PUTPUBFH) || | |
866 | (op->opnum == OP_RENEW) || | |
867 | (op->opnum == OP_SETCLIENTID) || | |
868 | (op->opnum == OP_RELEASE_LOCKOWNER))) { | |
869 | op->status = nfserr_moved; | |
1da177e4 LT |
870 | goto encode_op; |
871 | } | |
872 | switch (op->opnum) { | |
873 | case OP_ACCESS: | |
ca364317 BF |
874 | op->status = nfsd4_access(rqstp, cstate, |
875 | &op->u.access); | |
1da177e4 LT |
876 | break; |
877 | case OP_CLOSE: | |
ca364317 BF |
878 | op->status = nfsd4_close(rqstp, cstate, |
879 | &op->u.close, &replay_owner); | |
1da177e4 LT |
880 | break; |
881 | case OP_COMMIT: | |
ca364317 BF |
882 | op->status = nfsd4_commit(rqstp, cstate, |
883 | &op->u.commit); | |
1da177e4 LT |
884 | break; |
885 | case OP_CREATE: | |
ca364317 BF |
886 | op->status = nfsd4_create(rqstp, cstate, |
887 | &op->u.create); | |
1da177e4 LT |
888 | break; |
889 | case OP_DELEGRETURN: | |
ca364317 BF |
890 | op->status = nfsd4_delegreturn(rqstp, cstate, |
891 | &op->u.delegreturn); | |
1da177e4 LT |
892 | break; |
893 | case OP_GETATTR: | |
ca364317 BF |
894 | op->status = nfsd4_getattr(rqstp, cstate, |
895 | &op->u.getattr); | |
1da177e4 LT |
896 | break; |
897 | case OP_GETFH: | |
ca364317 | 898 | op->status = nfsd4_getfh(cstate, &op->u.getfh); |
1da177e4 LT |
899 | break; |
900 | case OP_LINK: | |
ca364317 | 901 | op->status = nfsd4_link(rqstp, cstate, &op->u.link); |
1da177e4 LT |
902 | break; |
903 | case OP_LOCK: | |
ca364317 BF |
904 | op->status = nfsd4_lock(rqstp, cstate, &op->u.lock, |
905 | &replay_owner); | |
1da177e4 LT |
906 | break; |
907 | case OP_LOCKT: | |
ca364317 | 908 | op->status = nfsd4_lockt(rqstp, cstate, &op->u.lockt); |
1da177e4 LT |
909 | break; |
910 | case OP_LOCKU: | |
ca364317 BF |
911 | op->status = nfsd4_locku(rqstp, cstate, &op->u.locku, |
912 | &replay_owner); | |
1da177e4 LT |
913 | break; |
914 | case OP_LOOKUP: | |
ca364317 BF |
915 | op->status = nfsd4_lookup(rqstp, cstate, |
916 | &op->u.lookup); | |
1da177e4 LT |
917 | break; |
918 | case OP_LOOKUPP: | |
ca364317 | 919 | op->status = nfsd4_lookupp(rqstp, cstate); |
1da177e4 LT |
920 | break; |
921 | case OP_NVERIFY: | |
ca364317 BF |
922 | op->status = nfsd4_verify(rqstp, cstate, |
923 | &op->u.nverify); | |
1da177e4 LT |
924 | if (op->status == nfserr_not_same) |
925 | op->status = nfs_ok; | |
926 | break; | |
927 | case OP_OPEN: | |
ca364317 BF |
928 | op->status = nfsd4_open(rqstp, cstate, |
929 | &op->u.open, &replay_owner); | |
1da177e4 LT |
930 | break; |
931 | case OP_OPEN_CONFIRM: | |
ca364317 BF |
932 | op->status = nfsd4_open_confirm(rqstp, cstate, |
933 | &op->u.open_confirm, | |
934 | &replay_owner); | |
1da177e4 LT |
935 | break; |
936 | case OP_OPEN_DOWNGRADE: | |
ca364317 BF |
937 | op->status = nfsd4_open_downgrade(rqstp, cstate, |
938 | &op->u.open_downgrade, | |
939 | &replay_owner); | |
1da177e4 LT |
940 | break; |
941 | case OP_PUTFH: | |
ca364317 | 942 | op->status = nfsd4_putfh(rqstp, cstate, &op->u.putfh); |
1da177e4 LT |
943 | break; |
944 | case OP_PUTROOTFH: | |
ca364317 | 945 | op->status = nfsd4_putrootfh(rqstp, cstate); |
1da177e4 LT |
946 | break; |
947 | case OP_READ: | |
ca364317 | 948 | op->status = nfsd4_read(rqstp, cstate, &op->u.read); |
1da177e4 LT |
949 | break; |
950 | case OP_READDIR: | |
ca364317 BF |
951 | op->status = nfsd4_readdir(rqstp, cstate, |
952 | &op->u.readdir); | |
1da177e4 LT |
953 | break; |
954 | case OP_READLINK: | |
ca364317 BF |
955 | op->status = nfsd4_readlink(rqstp, cstate, |
956 | &op->u.readlink); | |
1da177e4 LT |
957 | break; |
958 | case OP_REMOVE: | |
ca364317 BF |
959 | op->status = nfsd4_remove(rqstp, cstate, |
960 | &op->u.remove); | |
1da177e4 LT |
961 | break; |
962 | case OP_RENAME: | |
ca364317 BF |
963 | op->status = nfsd4_rename(rqstp, cstate, |
964 | &op->u.rename); | |
1da177e4 LT |
965 | break; |
966 | case OP_RENEW: | |
967 | op->status = nfsd4_renew(&op->u.renew); | |
968 | break; | |
969 | case OP_RESTOREFH: | |
ca364317 | 970 | op->status = nfsd4_restorefh(cstate); |
1da177e4 LT |
971 | break; |
972 | case OP_SAVEFH: | |
ca364317 | 973 | op->status = nfsd4_savefh(cstate); |
1da177e4 LT |
974 | break; |
975 | case OP_SETATTR: | |
ca364317 BF |
976 | op->status = nfsd4_setattr(rqstp, cstate, |
977 | &op->u.setattr); | |
1da177e4 LT |
978 | break; |
979 | case OP_SETCLIENTID: | |
980 | op->status = nfsd4_setclientid(rqstp, &op->u.setclientid); | |
981 | break; | |
982 | case OP_SETCLIENTID_CONFIRM: | |
983 | op->status = nfsd4_setclientid_confirm(rqstp, &op->u.setclientid_confirm); | |
984 | break; | |
985 | case OP_VERIFY: | |
ca364317 BF |
986 | op->status = nfsd4_verify(rqstp, cstate, |
987 | &op->u.verify); | |
1da177e4 LT |
988 | if (op->status == nfserr_same) |
989 | op->status = nfs_ok; | |
990 | break; | |
991 | case OP_WRITE: | |
ca364317 | 992 | op->status = nfsd4_write(rqstp, cstate, &op->u.write); |
1da177e4 LT |
993 | break; |
994 | case OP_RELEASE_LOCKOWNER: | |
995 | op->status = nfsd4_release_lockowner(rqstp, &op->u.release_lockowner); | |
996 | break; | |
997 | default: | |
998 | BUG_ON(op->status == nfs_ok); | |
999 | break; | |
1000 | } | |
1001 | ||
1002 | encode_op: | |
a90b061c | 1003 | if (op->status == nfserr_replay_me) { |
1da177e4 LT |
1004 | op->replay = &replay_owner->so_replay; |
1005 | nfsd4_encode_replay(resp, op); | |
1006 | status = op->status = op->replay->rp_status; | |
1007 | } else { | |
1008 | nfsd4_encode_operation(resp, op); | |
1009 | status = op->status; | |
1010 | } | |
1011 | if (replay_owner && (replay_owner != (void *)(-1))) { | |
1012 | nfs4_put_stateowner(replay_owner); | |
1013 | replay_owner = NULL; | |
1014 | } | |
7e06b7f9 N |
1015 | /* XXX Ugh, we need to get rid of this kind of special case: */ |
1016 | if (op->opnum == OP_READ && op->u.read.rd_filp) | |
1017 | fput(op->u.read.rd_filp); | |
e2b20950 SA |
1018 | |
1019 | nfsd4_increment_op_stats(op->opnum); | |
1da177e4 LT |
1020 | } |
1021 | ||
1022 | out: | |
1023 | nfsd4_release_compoundargs(args); | |
ca364317 | 1024 | cstate_free(cstate); |
1da177e4 LT |
1025 | return status; |
1026 | } | |
1027 | ||
1028 | #define nfs4svc_decode_voidargs NULL | |
1029 | #define nfs4svc_release_void NULL | |
1030 | #define nfsd4_voidres nfsd4_voidargs | |
1031 | #define nfs4svc_release_compound NULL | |
1032 | struct nfsd4_voidargs { int dummy; }; | |
1033 | ||
1034 | #define PROC(name, argt, rest, relt, cache, respsize) \ | |
1035 | { (svc_procfunc) nfsd4_proc_##name, \ | |
1036 | (kxdrproc_t) nfs4svc_decode_##argt##args, \ | |
1037 | (kxdrproc_t) nfs4svc_encode_##rest##res, \ | |
1038 | (kxdrproc_t) nfs4svc_release_##relt, \ | |
1039 | sizeof(struct nfsd4_##argt##args), \ | |
1040 | sizeof(struct nfsd4_##rest##res), \ | |
1041 | 0, \ | |
1042 | cache, \ | |
1043 | respsize, \ | |
1044 | } | |
1045 | ||
1046 | /* | |
1047 | * TODO: At the present time, the NFSv4 server does not do XID caching | |
1048 | * of requests. Implementing XID caching would not be a serious problem, | |
1049 | * although it would require a mild change in interfaces since one | |
1050 | * doesn't know whether an NFSv4 request is idempotent until after the | |
1051 | * XDR decode. However, XID caching totally confuses pynfs (Peter | |
1052 | * Astrand's regression testsuite for NFSv4 servers), which reuses | |
1053 | * XID's liberally, so I've left it unimplemented until pynfs generates | |
1054 | * better XID's. | |
1055 | */ | |
1056 | static struct svc_procedure nfsd_procedures4[2] = { | |
1057 | PROC(null, void, void, void, RC_NOCACHE, 1), | |
7775f4c8 | 1058 | PROC(compound, compound, compound, compound, RC_NOCACHE, NFSD_BUFSIZE/4) |
1da177e4 LT |
1059 | }; |
1060 | ||
1061 | struct svc_version nfsd_version4 = { | |
1062 | .vs_vers = 4, | |
1063 | .vs_nproc = 2, | |
1064 | .vs_proc = nfsd_procedures4, | |
1065 | .vs_dispatch = nfsd_dispatch, | |
1066 | .vs_xdrsize = NFS4_SVC_XDRSIZE, | |
1067 | }; | |
1068 | ||
1069 | /* | |
1070 | * Local variables: | |
1071 | * c-basic-offset: 8 | |
1072 | * End: | |
1073 | */ |