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