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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> | |
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) |
8837abca | 74 | accmode |= NFSD_MAY_READ; |
9801d8a3 | 75 | if (open->op_share_access & NFS4_SHARE_ACCESS_WRITE) |
8837abca | 76 | accmode |= (NFSD_MAY_WRITE | NFSD_MAY_TRUNC); |
9801d8a3 | 77 | if (open->op_share_deny & NFS4_SHARE_DENY_WRITE) |
8837abca | 78 | accmode |= NFSD_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 | ||
99f88726 BF |
106 | /* |
107 | * Following rfc 3530 14.2.16, use the returned bitmask | |
108 | * to indicate which attributes we used to store the | |
109 | * verifier: | |
749997e5 JL |
110 | */ |
111 | if (open->op_createmode == NFS4_CREATE_EXCLUSIVE && status == 0) | |
99f88726 | 112 | open->op_bmval[1] = (FATTR4_WORD1_TIME_ACCESS | |
749997e5 | 113 | FATTR4_WORD1_TIME_MODIFY); |
af85852d | 114 | } else { |
1da177e4 LT |
115 | status = nfsd_lookup(rqstp, current_fh, |
116 | open->op_fname.data, open->op_fname.len, &resfh); | |
117 | fh_unlock(current_fh); | |
118 | } | |
af85852d BF |
119 | if (status) |
120 | goto out; | |
1da177e4 | 121 | |
af85852d | 122 | set_change_info(&open->op_cinfo, current_fh); |
13024b7b | 123 | fh_dup2(current_fh, &resfh); |
1da177e4 | 124 | |
af85852d | 125 | /* set reply cache */ |
a4773c08 BF |
126 | fh_copy_shallow(&open->op_stateowner->so_replay.rp_openfh, |
127 | &resfh.fh_handle); | |
81ac95c5 | 128 | if (!created) |
8837abca MS |
129 | status = do_open_permission(rqstp, current_fh, open, |
130 | NFSD_MAY_NOP); | |
1da177e4 | 131 | |
af85852d | 132 | out: |
1da177e4 LT |
133 | fh_put(&resfh); |
134 | return status; | |
135 | } | |
136 | ||
b37ad28b | 137 | static __be32 |
1da177e4 LT |
138 | do_open_fhandle(struct svc_rqst *rqstp, struct svc_fh *current_fh, struct nfsd4_open *open) |
139 | { | |
b37ad28b | 140 | __be32 status; |
1da177e4 LT |
141 | |
142 | /* Only reclaims from previously confirmed clients are valid */ | |
143 | if ((status = nfs4_check_open_reclaim(&open->op_clientid))) | |
144 | return status; | |
145 | ||
146 | /* We don't know the target directory, and therefore can not | |
147 | * set the change info | |
148 | */ | |
149 | ||
150 | memset(&open->op_cinfo, 0, sizeof(struct nfsd4_change_info)); | |
151 | ||
152 | /* set replay cache */ | |
a4773c08 BF |
153 | fh_copy_shallow(&open->op_stateowner->so_replay.rp_openfh, |
154 | ¤t_fh->fh_handle); | |
1da177e4 LT |
155 | |
156 | open->op_truncate = (open->op_iattr.ia_valid & ATTR_SIZE) && | |
157 | (open->op_iattr.ia_size == 0); | |
158 | ||
8837abca MS |
159 | status = do_open_permission(rqstp, current_fh, open, |
160 | NFSD_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 | 185 | fh_put(&cstate->current_fh); |
a4773c08 BF |
186 | fh_copy_shallow(&cstate->current_fh.fh_handle, |
187 | &rp->rp_openfh); | |
8837abca | 188 | status = fh_verify(rqstp, &cstate->current_fh, 0, NFSD_MAY_NOP); |
1da177e4 LT |
189 | if (status) |
190 | dprintk("nfsd4_open: replay failed" | |
191 | " restoring previous filehandle\n"); | |
192 | else | |
a90b061c | 193 | status = nfserr_replay_me; |
1da177e4 LT |
194 | } |
195 | if (status) | |
196 | goto out; | |
fb553c0f BF |
197 | |
198 | /* Openowner is now set, so sequence id will get bumped. Now we need | |
199 | * these checks before we do any creates: */ | |
cbd0d51a | 200 | status = nfserr_grace; |
af558e33 | 201 | if (locks_in_grace() && open->op_claim_type != NFS4_OPEN_CLAIM_PREVIOUS) |
cbd0d51a BF |
202 | goto out; |
203 | status = nfserr_no_grace; | |
af558e33 | 204 | if (!locks_in_grace() && open->op_claim_type == NFS4_OPEN_CLAIM_PREVIOUS) |
cbd0d51a | 205 | goto out; |
fb553c0f | 206 | |
1da177e4 | 207 | switch (open->op_claim_type) { |
0dd3c192 | 208 | case NFS4_OPEN_CLAIM_DELEGATE_CUR: |
1da177e4 LT |
209 | case NFS4_OPEN_CLAIM_NULL: |
210 | /* | |
211 | * (1) set CURRENT_FH to the file being opened, | |
212 | * creating it if necessary, (2) set open->op_cinfo, | |
213 | * (3) set open->op_truncate if the file is to be | |
214 | * truncated after opening, (4) do permission checking. | |
215 | */ | |
ca364317 BF |
216 | status = do_open_lookup(rqstp, &cstate->current_fh, |
217 | open); | |
1da177e4 LT |
218 | if (status) |
219 | goto out; | |
220 | break; | |
221 | case NFS4_OPEN_CLAIM_PREVIOUS: | |
a525825d | 222 | open->op_stateowner->so_confirmed = 1; |
1da177e4 LT |
223 | /* |
224 | * The CURRENT_FH is already set to the file being | |
225 | * opened. (1) set open->op_cinfo, (2) set | |
226 | * open->op_truncate if the file is to be truncated | |
227 | * after opening, (3) do permission checking. | |
228 | */ | |
ca364317 BF |
229 | status = do_open_fhandle(rqstp, &cstate->current_fh, |
230 | open); | |
1da177e4 LT |
231 | if (status) |
232 | goto out; | |
233 | break; | |
1da177e4 | 234 | case NFS4_OPEN_CLAIM_DELEGATE_PREV: |
a525825d | 235 | open->op_stateowner->so_confirmed = 1; |
2fdada03 | 236 | dprintk("NFSD: unsupported OPEN claim type %d\n", |
1da177e4 LT |
237 | open->op_claim_type); |
238 | status = nfserr_notsupp; | |
239 | goto out; | |
240 | default: | |
2fdada03 | 241 | dprintk("NFSD: Invalid OPEN claim type %d\n", |
1da177e4 LT |
242 | open->op_claim_type); |
243 | status = nfserr_inval; | |
244 | goto out; | |
245 | } | |
246 | /* | |
247 | * nfsd4_process_open2() does the actual opening of the file. If | |
248 | * successful, it (1) truncates the file if open->op_truncate was | |
249 | * set, (2) sets open->op_stateid, (3) sets open->op_delegation. | |
250 | */ | |
ca364317 | 251 | status = nfsd4_process_open2(rqstp, &cstate->current_fh, open); |
1da177e4 | 252 | out: |
f2327d9a | 253 | if (open->op_stateowner) { |
1da177e4 | 254 | nfs4_get_stateowner(open->op_stateowner); |
a4f1706a | 255 | cstate->replay_owner = open->op_stateowner; |
f2327d9a | 256 | } |
1da177e4 LT |
257 | nfs4_unlock_state(); |
258 | return status; | |
259 | } | |
260 | ||
261 | /* | |
262 | * filehandle-manipulating ops. | |
263 | */ | |
7191155b | 264 | static __be32 |
b591480b BF |
265 | nfsd4_getfh(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
266 | struct svc_fh **getfh) | |
1da177e4 | 267 | { |
ca364317 | 268 | if (!cstate->current_fh.fh_dentry) |
1da177e4 LT |
269 | return nfserr_nofilehandle; |
270 | ||
ca364317 | 271 | *getfh = &cstate->current_fh; |
1da177e4 LT |
272 | return nfs_ok; |
273 | } | |
274 | ||
7191155b | 275 | static __be32 |
ca364317 BF |
276 | nfsd4_putfh(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
277 | struct nfsd4_putfh *putfh) | |
1da177e4 | 278 | { |
ca364317 BF |
279 | fh_put(&cstate->current_fh); |
280 | cstate->current_fh.fh_handle.fh_size = putfh->pf_fhlen; | |
281 | memcpy(&cstate->current_fh.fh_handle.fh_base, putfh->pf_fhval, | |
282 | putfh->pf_fhlen); | |
8837abca | 283 | return fh_verify(rqstp, &cstate->current_fh, 0, NFSD_MAY_NOP); |
1da177e4 LT |
284 | } |
285 | ||
7191155b | 286 | static __be32 |
b591480b BF |
287 | nfsd4_putrootfh(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
288 | void *arg) | |
1da177e4 | 289 | { |
b37ad28b | 290 | __be32 status; |
1da177e4 | 291 | |
ca364317 | 292 | fh_put(&cstate->current_fh); |
df547efb | 293 | status = exp_pseudoroot(rqstp, &cstate->current_fh); |
1da177e4 LT |
294 | return status; |
295 | } | |
296 | ||
7191155b | 297 | static __be32 |
b591480b BF |
298 | nfsd4_restorefh(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
299 | void *arg) | |
1da177e4 | 300 | { |
ca364317 | 301 | if (!cstate->save_fh.fh_dentry) |
1da177e4 LT |
302 | return nfserr_restorefh; |
303 | ||
ca364317 | 304 | fh_dup2(&cstate->current_fh, &cstate->save_fh); |
1da177e4 LT |
305 | return nfs_ok; |
306 | } | |
307 | ||
7191155b | 308 | static __be32 |
b591480b BF |
309 | nfsd4_savefh(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
310 | void *arg) | |
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 | */ | |
7191155b | 322 | static __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 | ||
7191155b | 334 | static __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 | ||
8837abca MS |
361 | status = fh_verify(rqstp, &cstate->current_fh, S_IFDIR, |
362 | NFSD_MAY_CREATE); | |
1da177e4 LT |
363 | if (status == nfserr_symlink) |
364 | status = nfserr_notdir; | |
365 | if (status) | |
366 | return status; | |
367 | ||
368 | switch (create->cr_type) { | |
369 | case NF4LNK: | |
370 | /* ugh! we have to null-terminate the linktext, or | |
371 | * vfs_symlink() will choke. it is always safe to | |
372 | * null-terminate by brute force, since at worst we | |
373 | * will overwrite the first byte of the create namelen | |
374 | * in the XDR buffer, which has already been extracted | |
375 | * during XDR decode. | |
376 | */ | |
377 | create->cr_linkname[create->cr_linklen] = 0; | |
378 | ||
ca364317 BF |
379 | status = nfsd_symlink(rqstp, &cstate->current_fh, |
380 | create->cr_name, create->cr_namelen, | |
381 | create->cr_linkname, create->cr_linklen, | |
382 | &resfh, &create->cr_iattr); | |
1da177e4 LT |
383 | break; |
384 | ||
385 | case NF4BLK: | |
386 | rdev = MKDEV(create->cr_specdata1, create->cr_specdata2); | |
387 | if (MAJOR(rdev) != create->cr_specdata1 || | |
388 | MINOR(rdev) != create->cr_specdata2) | |
389 | return nfserr_inval; | |
ca364317 BF |
390 | status = nfsd_create(rqstp, &cstate->current_fh, |
391 | create->cr_name, create->cr_namelen, | |
392 | &create->cr_iattr, S_IFBLK, rdev, &resfh); | |
1da177e4 LT |
393 | break; |
394 | ||
395 | case NF4CHR: | |
396 | rdev = MKDEV(create->cr_specdata1, create->cr_specdata2); | |
397 | if (MAJOR(rdev) != create->cr_specdata1 || | |
398 | MINOR(rdev) != create->cr_specdata2) | |
399 | return nfserr_inval; | |
ca364317 BF |
400 | status = nfsd_create(rqstp, &cstate->current_fh, |
401 | create->cr_name, create->cr_namelen, | |
402 | &create->cr_iattr,S_IFCHR, rdev, &resfh); | |
1da177e4 LT |
403 | break; |
404 | ||
405 | case NF4SOCK: | |
ca364317 BF |
406 | status = nfsd_create(rqstp, &cstate->current_fh, |
407 | create->cr_name, create->cr_namelen, | |
408 | &create->cr_iattr, S_IFSOCK, 0, &resfh); | |
1da177e4 LT |
409 | break; |
410 | ||
411 | case NF4FIFO: | |
ca364317 BF |
412 | status = nfsd_create(rqstp, &cstate->current_fh, |
413 | create->cr_name, create->cr_namelen, | |
414 | &create->cr_iattr, S_IFIFO, 0, &resfh); | |
1da177e4 LT |
415 | break; |
416 | ||
417 | case NF4DIR: | |
418 | create->cr_iattr.ia_valid &= ~ATTR_SIZE; | |
ca364317 BF |
419 | status = nfsd_create(rqstp, &cstate->current_fh, |
420 | create->cr_name, create->cr_namelen, | |
421 | &create->cr_iattr, S_IFDIR, 0, &resfh); | |
1da177e4 LT |
422 | break; |
423 | ||
424 | default: | |
425 | status = nfserr_badtype; | |
426 | } | |
427 | ||
428 | if (!status) { | |
ca364317 BF |
429 | fh_unlock(&cstate->current_fh); |
430 | set_change_info(&create->cr_cinfo, &cstate->current_fh); | |
431 | fh_dup2(&cstate->current_fh, &resfh); | |
1da177e4 LT |
432 | } |
433 | ||
434 | fh_put(&resfh); | |
435 | return status; | |
436 | } | |
437 | ||
7191155b | 438 | static __be32 |
ca364317 BF |
439 | nfsd4_getattr(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
440 | struct nfsd4_getattr *getattr) | |
1da177e4 | 441 | { |
b37ad28b | 442 | __be32 status; |
1da177e4 | 443 | |
8837abca | 444 | status = fh_verify(rqstp, &cstate->current_fh, 0, NFSD_MAY_NOP); |
1da177e4 LT |
445 | if (status) |
446 | return status; | |
447 | ||
448 | if (getattr->ga_bmval[1] & NFSD_WRITEONLY_ATTRS_WORD1) | |
449 | return nfserr_inval; | |
450 | ||
451 | getattr->ga_bmval[0] &= NFSD_SUPPORTED_ATTRS_WORD0; | |
452 | getattr->ga_bmval[1] &= NFSD_SUPPORTED_ATTRS_WORD1; | |
453 | ||
ca364317 | 454 | getattr->ga_fhp = &cstate->current_fh; |
1da177e4 LT |
455 | return nfs_ok; |
456 | } | |
457 | ||
7191155b | 458 | static __be32 |
ca364317 BF |
459 | nfsd4_link(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
460 | struct nfsd4_link *link) | |
1da177e4 | 461 | { |
b37ad28b | 462 | __be32 status = nfserr_nofilehandle; |
1da177e4 | 463 | |
ca364317 | 464 | if (!cstate->save_fh.fh_dentry) |
1da177e4 | 465 | return status; |
ca364317 BF |
466 | status = nfsd_link(rqstp, &cstate->current_fh, |
467 | link->li_name, link->li_namelen, &cstate->save_fh); | |
1da177e4 | 468 | if (!status) |
ca364317 | 469 | set_change_info(&link->li_cinfo, &cstate->current_fh); |
1da177e4 LT |
470 | return status; |
471 | } | |
472 | ||
b37ad28b | 473 | static __be32 |
b591480b BF |
474 | nfsd4_lookupp(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
475 | void *arg) | |
1da177e4 LT |
476 | { |
477 | struct svc_fh tmp_fh; | |
b37ad28b | 478 | __be32 ret; |
1da177e4 LT |
479 | |
480 | fh_init(&tmp_fh, NFS4_FHSIZE); | |
df547efb BF |
481 | ret = exp_pseudoroot(rqstp, &tmp_fh); |
482 | if (ret) | |
1da177e4 | 483 | return ret; |
ca364317 | 484 | if (tmp_fh.fh_dentry == cstate->current_fh.fh_dentry) { |
1da177e4 LT |
485 | fh_put(&tmp_fh); |
486 | return nfserr_noent; | |
487 | } | |
488 | fh_put(&tmp_fh); | |
ca364317 BF |
489 | return nfsd_lookup(rqstp, &cstate->current_fh, |
490 | "..", 2, &cstate->current_fh); | |
1da177e4 LT |
491 | } |
492 | ||
7191155b | 493 | static __be32 |
ca364317 BF |
494 | nfsd4_lookup(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
495 | struct nfsd4_lookup *lookup) | |
1da177e4 | 496 | { |
ca364317 BF |
497 | return nfsd_lookup(rqstp, &cstate->current_fh, |
498 | lookup->lo_name, lookup->lo_len, | |
499 | &cstate->current_fh); | |
1da177e4 LT |
500 | } |
501 | ||
7191155b | 502 | static __be32 |
ca364317 BF |
503 | nfsd4_read(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
504 | struct nfsd4_read *read) | |
1da177e4 | 505 | { |
b37ad28b | 506 | __be32 status; |
1da177e4 LT |
507 | |
508 | /* no need to check permission - this will be done in nfsd_read() */ | |
509 | ||
7e06b7f9 | 510 | read->rd_filp = NULL; |
1da177e4 LT |
511 | if (read->rd_offset >= OFFSET_MAX) |
512 | return nfserr_inval; | |
513 | ||
514 | nfs4_lock_state(); | |
515 | /* check stateid */ | |
ca364317 BF |
516 | if ((status = nfs4_preprocess_stateid_op(&cstate->current_fh, |
517 | &read->rd_stateid, | |
6150ef0d | 518 | RD_STATE, &read->rd_filp))) { |
1da177e4 LT |
519 | dprintk("NFSD: nfsd4_read: couldn't process stateid!\n"); |
520 | goto out; | |
521 | } | |
7e06b7f9 N |
522 | if (read->rd_filp) |
523 | get_file(read->rd_filp); | |
1da177e4 LT |
524 | status = nfs_ok; |
525 | out: | |
526 | nfs4_unlock_state(); | |
527 | read->rd_rqstp = rqstp; | |
ca364317 | 528 | read->rd_fhp = &cstate->current_fh; |
1da177e4 LT |
529 | return status; |
530 | } | |
531 | ||
7191155b | 532 | static __be32 |
ca364317 BF |
533 | nfsd4_readdir(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
534 | struct nfsd4_readdir *readdir) | |
1da177e4 LT |
535 | { |
536 | u64 cookie = readdir->rd_cookie; | |
537 | static const nfs4_verifier zeroverf; | |
538 | ||
539 | /* no need to check permission - this will be done in nfsd_readdir() */ | |
540 | ||
541 | if (readdir->rd_bmval[1] & NFSD_WRITEONLY_ATTRS_WORD1) | |
542 | return nfserr_inval; | |
543 | ||
544 | readdir->rd_bmval[0] &= NFSD_SUPPORTED_ATTRS_WORD0; | |
545 | readdir->rd_bmval[1] &= NFSD_SUPPORTED_ATTRS_WORD1; | |
546 | ||
547 | if ((cookie > ~(u32)0) || (cookie == 1) || (cookie == 2) || | |
548 | (cookie == 0 && memcmp(readdir->rd_verf.data, zeroverf.data, NFS4_VERIFIER_SIZE))) | |
549 | return nfserr_bad_cookie; | |
550 | ||
551 | readdir->rd_rqstp = rqstp; | |
ca364317 | 552 | readdir->rd_fhp = &cstate->current_fh; |
1da177e4 LT |
553 | return nfs_ok; |
554 | } | |
555 | ||
7191155b | 556 | static __be32 |
ca364317 BF |
557 | nfsd4_readlink(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
558 | struct nfsd4_readlink *readlink) | |
1da177e4 LT |
559 | { |
560 | readlink->rl_rqstp = rqstp; | |
ca364317 | 561 | readlink->rl_fhp = &cstate->current_fh; |
1da177e4 LT |
562 | return nfs_ok; |
563 | } | |
564 | ||
7191155b | 565 | static __be32 |
ca364317 BF |
566 | nfsd4_remove(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
567 | struct nfsd4_remove *remove) | |
1da177e4 | 568 | { |
b37ad28b | 569 | __be32 status; |
1da177e4 | 570 | |
af558e33 | 571 | if (locks_in_grace()) |
c815afc7 | 572 | return nfserr_grace; |
ca364317 BF |
573 | status = nfsd_unlink(rqstp, &cstate->current_fh, 0, |
574 | remove->rm_name, remove->rm_namelen); | |
1da177e4 LT |
575 | if (status == nfserr_symlink) |
576 | return nfserr_notdir; | |
577 | if (!status) { | |
ca364317 BF |
578 | fh_unlock(&cstate->current_fh); |
579 | set_change_info(&remove->rm_cinfo, &cstate->current_fh); | |
1da177e4 LT |
580 | } |
581 | return status; | |
582 | } | |
583 | ||
7191155b | 584 | static __be32 |
ca364317 BF |
585 | nfsd4_rename(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
586 | struct nfsd4_rename *rename) | |
1da177e4 | 587 | { |
b37ad28b | 588 | __be32 status = nfserr_nofilehandle; |
1da177e4 | 589 | |
ca364317 | 590 | if (!cstate->save_fh.fh_dentry) |
1da177e4 | 591 | return status; |
af558e33 | 592 | if (locks_in_grace() && !(cstate->save_fh.fh_export->ex_flags |
c815afc7 N |
593 | & NFSEXP_NOSUBTREECHECK)) |
594 | return nfserr_grace; | |
ca364317 BF |
595 | status = nfsd_rename(rqstp, &cstate->save_fh, rename->rn_sname, |
596 | rename->rn_snamelen, &cstate->current_fh, | |
1da177e4 LT |
597 | rename->rn_tname, rename->rn_tnamelen); |
598 | ||
599 | /* the underlying filesystem returns different error's than required | |
600 | * by NFSv4. both save_fh and current_fh have been verified.. */ | |
601 | if (status == nfserr_isdir) | |
602 | status = nfserr_exist; | |
603 | else if ((status == nfserr_notdir) && | |
ca364317 BF |
604 | (S_ISDIR(cstate->save_fh.fh_dentry->d_inode->i_mode) && |
605 | S_ISDIR(cstate->current_fh.fh_dentry->d_inode->i_mode))) | |
1da177e4 LT |
606 | status = nfserr_exist; |
607 | else if (status == nfserr_symlink) | |
608 | status = nfserr_notdir; | |
609 | ||
610 | if (!status) { | |
ca364317 BF |
611 | set_change_info(&rename->rn_sinfo, &cstate->current_fh); |
612 | set_change_info(&rename->rn_tinfo, &cstate->save_fh); | |
1da177e4 LT |
613 | } |
614 | return status; | |
615 | } | |
616 | ||
dcb488a3 AA |
617 | static __be32 |
618 | nfsd4_secinfo(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, | |
619 | struct nfsd4_secinfo *secinfo) | |
620 | { | |
621 | struct svc_fh resfh; | |
622 | struct svc_export *exp; | |
623 | struct dentry *dentry; | |
624 | __be32 err; | |
625 | ||
626 | fh_init(&resfh, NFS4_FHSIZE); | |
627 | err = nfsd_lookup_dentry(rqstp, &cstate->current_fh, | |
628 | secinfo->si_name, secinfo->si_namelen, | |
629 | &exp, &dentry); | |
630 | if (err) | |
631 | return err; | |
632 | if (dentry->d_inode == NULL) { | |
633 | exp_put(exp); | |
634 | err = nfserr_noent; | |
635 | } else | |
636 | secinfo->si_exp = exp; | |
637 | dput(dentry); | |
638 | return err; | |
639 | } | |
640 | ||
7191155b | 641 | static __be32 |
ca364317 BF |
642 | nfsd4_setattr(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
643 | struct nfsd4_setattr *setattr) | |
1da177e4 | 644 | { |
b37ad28b | 645 | __be32 status = nfs_ok; |
1da177e4 | 646 | |
1da177e4 LT |
647 | if (setattr->sa_iattr.ia_valid & ATTR_SIZE) { |
648 | nfs4_lock_state(); | |
ca364317 | 649 | status = nfs4_preprocess_stateid_op(&cstate->current_fh, |
6150ef0d | 650 | &setattr->sa_stateid, WR_STATE, NULL); |
1da177e4 | 651 | nfs4_unlock_state(); |
375c5547 | 652 | if (status) { |
3e3b4800 | 653 | dprintk("NFSD: nfsd4_setattr: couldn't process stateid!\n"); |
375c5547 BF |
654 | return status; |
655 | } | |
1da177e4 | 656 | } |
18f335af DH |
657 | status = mnt_want_write(cstate->current_fh.fh_export->ex_path.mnt); |
658 | if (status) | |
659 | return status; | |
1da177e4 LT |
660 | status = nfs_ok; |
661 | if (setattr->sa_acl != NULL) | |
ca364317 BF |
662 | status = nfsd4_set_nfs4_acl(rqstp, &cstate->current_fh, |
663 | setattr->sa_acl); | |
1da177e4 | 664 | if (status) |
18f335af | 665 | goto out; |
ca364317 | 666 | status = nfsd_setattr(rqstp, &cstate->current_fh, &setattr->sa_iattr, |
1da177e4 | 667 | 0, (time_t)0); |
18f335af DH |
668 | out: |
669 | mnt_drop_write(cstate->current_fh.fh_export->ex_path.mnt); | |
1da177e4 LT |
670 | return status; |
671 | } | |
672 | ||
7191155b | 673 | static __be32 |
ca364317 BF |
674 | nfsd4_write(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
675 | struct nfsd4_write *write) | |
1da177e4 LT |
676 | { |
677 | stateid_t *stateid = &write->wr_stateid; | |
678 | struct file *filp = NULL; | |
679 | u32 *p; | |
b37ad28b | 680 | __be32 status = nfs_ok; |
31dec253 | 681 | unsigned long cnt; |
1da177e4 LT |
682 | |
683 | /* no need to check permission - this will be done in nfsd_write() */ | |
684 | ||
685 | if (write->wr_offset >= OFFSET_MAX) | |
686 | return nfserr_inval; | |
687 | ||
688 | nfs4_lock_state(); | |
ca364317 | 689 | status = nfs4_preprocess_stateid_op(&cstate->current_fh, stateid, |
6150ef0d | 690 | WR_STATE, &filp); |
7e06b7f9 N |
691 | if (filp) |
692 | get_file(filp); | |
1da177e4 LT |
693 | nfs4_unlock_state(); |
694 | ||
375c5547 BF |
695 | if (status) { |
696 | dprintk("NFSD: nfsd4_write: couldn't process stateid!\n"); | |
697 | return status; | |
698 | } | |
699 | ||
31dec253 | 700 | cnt = write->wr_buflen; |
1da177e4 LT |
701 | write->wr_how_written = write->wr_stable_how; |
702 | p = (u32 *)write->wr_verifier.data; | |
703 | *p++ = nfssvc_boot.tv_sec; | |
704 | *p++ = nfssvc_boot.tv_usec; | |
705 | ||
ca364317 BF |
706 | status = nfsd_write(rqstp, &cstate->current_fh, filp, |
707 | write->wr_offset, rqstp->rq_vec, write->wr_vlen, | |
31dec253 | 708 | &cnt, &write->wr_how_written); |
7e06b7f9 N |
709 | if (filp) |
710 | fput(filp); | |
1da177e4 | 711 | |
31dec253 DS |
712 | write->wr_bytes_written = cnt; |
713 | ||
1da177e4 LT |
714 | if (status == nfserr_symlink) |
715 | status = nfserr_inval; | |
716 | return status; | |
1da177e4 LT |
717 | } |
718 | ||
719 | /* This routine never returns NFS_OK! If there are no other errors, it | |
720 | * will return NFSERR_SAME or NFSERR_NOT_SAME depending on whether the | |
721 | * attributes matched. VERIFY is implemented by mapping NFSERR_SAME | |
722 | * to NFS_OK after the call; NVERIFY by mapping NFSERR_NOT_SAME to NFS_OK. | |
723 | */ | |
b37ad28b | 724 | static __be32 |
c954e2a5 | 725 | _nfsd4_verify(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
ca364317 | 726 | struct nfsd4_verify *verify) |
1da177e4 | 727 | { |
2ebbc012 | 728 | __be32 *buf, *p; |
1da177e4 | 729 | int count; |
b37ad28b | 730 | __be32 status; |
1da177e4 | 731 | |
8837abca | 732 | status = fh_verify(rqstp, &cstate->current_fh, 0, NFSD_MAY_NOP); |
1da177e4 LT |
733 | if (status) |
734 | return status; | |
735 | ||
736 | if ((verify->ve_bmval[0] & ~NFSD_SUPPORTED_ATTRS_WORD0) | |
737 | || (verify->ve_bmval[1] & ~NFSD_SUPPORTED_ATTRS_WORD1)) | |
738 | return nfserr_attrnotsupp; | |
739 | if ((verify->ve_bmval[0] & FATTR4_WORD0_RDATTR_ERROR) | |
740 | || (verify->ve_bmval[1] & NFSD_WRITEONLY_ATTRS_WORD1)) | |
741 | return nfserr_inval; | |
742 | if (verify->ve_attrlen & 3) | |
743 | return nfserr_inval; | |
744 | ||
745 | /* count in words: | |
746 | * bitmap_len(1) + bitmap(2) + attr_len(1) = 4 | |
747 | */ | |
748 | count = 4 + (verify->ve_attrlen >> 2); | |
749 | buf = kmalloc(count << 2, GFP_KERNEL); | |
750 | if (!buf) | |
751 | return nfserr_resource; | |
752 | ||
ca364317 BF |
753 | status = nfsd4_encode_fattr(&cstate->current_fh, |
754 | cstate->current_fh.fh_export, | |
755 | cstate->current_fh.fh_dentry, buf, | |
1da177e4 | 756 | &count, verify->ve_bmval, |
406a7ea9 | 757 | rqstp, 0); |
1da177e4 LT |
758 | |
759 | /* this means that nfsd4_encode_fattr() ran out of space */ | |
760 | if (status == nfserr_resource && count == 0) | |
761 | status = nfserr_not_same; | |
762 | if (status) | |
763 | goto out_kfree; | |
764 | ||
765 | p = buf + 3; | |
766 | status = nfserr_not_same; | |
767 | if (ntohl(*p++) != verify->ve_attrlen) | |
768 | goto out_kfree; | |
769 | if (!memcmp(p, verify->ve_attrval, verify->ve_attrlen)) | |
770 | status = nfserr_same; | |
771 | ||
772 | out_kfree: | |
773 | kfree(buf); | |
774 | return status; | |
775 | } | |
776 | ||
c954e2a5 BF |
777 | static __be32 |
778 | nfsd4_nverify(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, | |
779 | struct nfsd4_verify *verify) | |
780 | { | |
781 | __be32 status; | |
782 | ||
783 | status = _nfsd4_verify(rqstp, cstate, verify); | |
784 | return status == nfserr_not_same ? nfs_ok : status; | |
785 | } | |
786 | ||
787 | static __be32 | |
788 | nfsd4_verify(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, | |
789 | struct nfsd4_verify *verify) | |
790 | { | |
791 | __be32 status; | |
792 | ||
793 | status = _nfsd4_verify(rqstp, cstate, verify); | |
794 | return status == nfserr_same ? nfs_ok : status; | |
795 | } | |
796 | ||
1da177e4 LT |
797 | /* |
798 | * NULL call. | |
799 | */ | |
7111c66e | 800 | static __be32 |
1da177e4 LT |
801 | nfsd4_proc_null(struct svc_rqst *rqstp, void *argp, void *resp) |
802 | { | |
803 | return nfs_ok; | |
804 | } | |
805 | ||
e2b20950 SA |
806 | static inline void nfsd4_increment_op_stats(u32 opnum) |
807 | { | |
808 | if (opnum >= FIRST_NFS4_OP && opnum <= LAST_NFS4_OP) | |
809 | nfsdstats.nfs4_opcount[opnum]++; | |
810 | } | |
811 | ||
b591480b BF |
812 | typedef __be32(*nfsd4op_func)(struct svc_rqst *, struct nfsd4_compound_state *, |
813 | void *); | |
f9bb94c4 AA |
814 | enum nfsd4_op_flags { |
815 | ALLOWED_WITHOUT_FH = 1 << 0, /* No current filehandle required */ | |
816 | ALLOWED_ON_ABSENT_FS = 2 << 0, /* ops processed on absent fs */ | |
817 | ALLOWED_AS_FIRST_OP = 3 << 0, /* ops reqired first in compound */ | |
818 | }; | |
b591480b BF |
819 | |
820 | struct nfsd4_operation { | |
821 | nfsd4op_func op_func; | |
822 | u32 op_flags; | |
b001a1b6 | 823 | char *op_name; |
b591480b BF |
824 | }; |
825 | ||
826 | static struct nfsd4_operation nfsd4_ops[]; | |
827 | ||
f1c7f79b | 828 | static const char *nfsd4_op_name(unsigned opnum); |
b001a1b6 | 829 | |
f9bb94c4 AA |
830 | /* |
831 | * Enforce NFSv4.1 COMPOUND ordering rules. | |
832 | * | |
833 | * TODO: | |
834 | * - enforce NFS4ERR_NOT_ONLY_OP, | |
835 | * - DESTROY_SESSION MUST be the final operation in the COMPOUND request. | |
836 | */ | |
837 | static bool nfs41_op_ordering_ok(struct nfsd4_compoundargs *args) | |
838 | { | |
839 | if (args->minorversion && args->opcnt > 0) { | |
840 | struct nfsd4_op *op = &args->ops[0]; | |
841 | return (op->status == nfserr_op_illegal) || | |
842 | (nfsd4_ops[op->opnum].op_flags & ALLOWED_AS_FIRST_OP); | |
843 | } | |
844 | return true; | |
845 | } | |
846 | ||
1da177e4 LT |
847 | /* |
848 | * COMPOUND call. | |
849 | */ | |
7111c66e | 850 | static __be32 |
1da177e4 LT |
851 | nfsd4_proc_compound(struct svc_rqst *rqstp, |
852 | struct nfsd4_compoundargs *args, | |
853 | struct nfsd4_compoundres *resp) | |
854 | { | |
855 | struct nfsd4_op *op; | |
b591480b | 856 | struct nfsd4_operation *opdesc; |
e354d571 | 857 | struct nfsd4_compound_state *cstate = &resp->cstate; |
e5710199 | 858 | int slack_bytes; |
b37ad28b | 859 | __be32 status; |
1da177e4 | 860 | |
1da177e4 | 861 | resp->xbuf = &rqstp->rq_res; |
e354d571 AA |
862 | resp->p = rqstp->rq_res.head[0].iov_base + |
863 | rqstp->rq_res.head[0].iov_len; | |
1da177e4 LT |
864 | resp->tagp = resp->p; |
865 | /* reserve space for: taglen, tag, and opcnt */ | |
866 | resp->p += 2 + XDR_QUADLEN(args->taglen); | |
867 | resp->end = rqstp->rq_res.head[0].iov_base + PAGE_SIZE; | |
868 | resp->taglen = args->taglen; | |
869 | resp->tag = args->tag; | |
870 | resp->opcnt = 0; | |
871 | resp->rqstp = rqstp; | |
e354d571 AA |
872 | resp->cstate.replay_owner = NULL; |
873 | fh_init(&resp->cstate.current_fh, NFS4_FHSIZE); | |
874 | fh_init(&resp->cstate.save_fh, NFS4_FHSIZE); | |
2f425878 AA |
875 | /* Use the deferral mechanism only for NFSv4.0 compounds */ |
876 | rqstp->rq_usedeferral = (args->minorversion == 0); | |
1da177e4 LT |
877 | |
878 | /* | |
879 | * According to RFC3010, this takes precedence over all other errors. | |
880 | */ | |
881 | status = nfserr_minor_vers_mismatch; | |
882 | if (args->minorversion > NFSD_SUPPORTED_MINOR_VERSION) | |
883 | goto out; | |
884 | ||
f9bb94c4 AA |
885 | if (!nfs41_op_ordering_ok(args)) { |
886 | op = &args->ops[0]; | |
887 | op->status = nfserr_sequence_pos; | |
888 | goto encode_op; | |
889 | } | |
890 | ||
1da177e4 LT |
891 | status = nfs_ok; |
892 | while (!status && resp->opcnt < args->opcnt) { | |
893 | op = &args->ops[resp->opcnt++]; | |
894 | ||
b001a1b6 BH |
895 | dprintk("nfsv4 compound op #%d/%d: %d (%s)\n", |
896 | resp->opcnt, args->opcnt, op->opnum, | |
897 | nfsd4_op_name(op->opnum)); | |
fd445277 | 898 | |
1da177e4 LT |
899 | /* |
900 | * The XDR decode routines may have pre-set op->status; | |
901 | * for example, if there is a miscellaneous XDR error | |
902 | * it will be set to nfserr_bad_xdr. | |
903 | */ | |
904 | if (op->status) | |
905 | goto encode_op; | |
906 | ||
907 | /* We must be able to encode a successful response to | |
908 | * this operation, with enough room left over to encode a | |
909 | * failed response to the next operation. If we don't | |
910 | * have enough room, fail with ERR_RESOURCE. | |
911 | */ | |
e5710199 BF |
912 | slack_bytes = (char *)resp->end - (char *)resp->p; |
913 | if (slack_bytes < COMPOUND_SLACK_SPACE | |
914 | + COMPOUND_ERR_SLACK_SPACE) { | |
915 | BUG_ON(slack_bytes < COMPOUND_ERR_SLACK_SPACE); | |
1da177e4 LT |
916 | op->status = nfserr_resource; |
917 | goto encode_op; | |
918 | } | |
919 | ||
b591480b BF |
920 | opdesc = &nfsd4_ops[op->opnum]; |
921 | ||
ca364317 | 922 | if (!cstate->current_fh.fh_dentry) { |
27d630ec | 923 | if (!(opdesc->op_flags & ALLOWED_WITHOUT_FH)) { |
42ca0993 BF |
924 | op->status = nfserr_nofilehandle; |
925 | goto encode_op; | |
926 | } | |
eeac294e BF |
927 | } else if (cstate->current_fh.fh_export->ex_fslocs.migrated && |
928 | !(opdesc->op_flags & ALLOWED_ON_ABSENT_FS)) { | |
42ca0993 | 929 | op->status = nfserr_moved; |
1da177e4 LT |
930 | goto encode_op; |
931 | } | |
b591480b BF |
932 | |
933 | if (opdesc->op_func) | |
934 | op->status = opdesc->op_func(rqstp, cstate, &op->u); | |
935 | else | |
1da177e4 | 936 | BUG_ON(op->status == nfs_ok); |
1da177e4 LT |
937 | |
938 | encode_op: | |
da3846a2 AA |
939 | /* Only from SEQUENCE or CREATE_SESSION */ |
940 | if (resp->cstate.status == nfserr_replay_cache) { | |
941 | dprintk("%s NFS4.1 replay from cache\n", __func__); | |
942 | status = op->status; | |
943 | goto out; | |
944 | } | |
a90b061c | 945 | if (op->status == nfserr_replay_me) { |
a4f1706a | 946 | op->replay = &cstate->replay_owner->so_replay; |
1da177e4 LT |
947 | nfsd4_encode_replay(resp, op); |
948 | status = op->status = op->replay->rp_status; | |
949 | } else { | |
950 | nfsd4_encode_operation(resp, op); | |
951 | status = op->status; | |
952 | } | |
0407717d BH |
953 | |
954 | dprintk("nfsv4 compound op %p opcnt %d #%d: %d: status %d\n", | |
955 | args->ops, args->opcnt, resp->opcnt, op->opnum, | |
956 | be32_to_cpu(status)); | |
957 | ||
a4f1706a BF |
958 | if (cstate->replay_owner) { |
959 | nfs4_put_stateowner(cstate->replay_owner); | |
960 | cstate->replay_owner = NULL; | |
1da177e4 | 961 | } |
7e06b7f9 N |
962 | /* XXX Ugh, we need to get rid of this kind of special case: */ |
963 | if (op->opnum == OP_READ && op->u.read.rd_filp) | |
964 | fput(op->u.read.rd_filp); | |
e2b20950 SA |
965 | |
966 | nfsd4_increment_op_stats(op->opnum); | |
1da177e4 | 967 | } |
2f425878 AA |
968 | if (!rqstp->rq_usedeferral && status == nfserr_dropit) { |
969 | dprintk("%s Dropit - send NFS4ERR_DELAY\n", __func__); | |
970 | status = nfserr_jukebox; | |
971 | } | |
1da177e4 | 972 | |
da3846a2 | 973 | resp->cstate.status = status; |
e354d571 AA |
974 | fh_put(&resp->cstate.current_fh); |
975 | fh_put(&resp->cstate.save_fh); | |
976 | BUG_ON(resp->cstate.replay_owner); | |
1da177e4 LT |
977 | out: |
978 | nfsd4_release_compoundargs(args); | |
2f425878 AA |
979 | /* Reset deferral mechanism for RPC deferrals */ |
980 | rqstp->rq_usedeferral = 1; | |
3b12cd98 | 981 | dprintk("nfsv4 compound returned %d\n", ntohl(status)); |
1da177e4 LT |
982 | return status; |
983 | } | |
984 | ||
20766016 | 985 | static struct nfsd4_operation nfsd4_ops[] = { |
b591480b BF |
986 | [OP_ACCESS] = { |
987 | .op_func = (nfsd4op_func)nfsd4_access, | |
b001a1b6 | 988 | .op_name = "OP_ACCESS", |
b591480b BF |
989 | }, |
990 | [OP_CLOSE] = { | |
991 | .op_func = (nfsd4op_func)nfsd4_close, | |
b001a1b6 | 992 | .op_name = "OP_CLOSE", |
b591480b BF |
993 | }, |
994 | [OP_COMMIT] = { | |
995 | .op_func = (nfsd4op_func)nfsd4_commit, | |
b001a1b6 | 996 | .op_name = "OP_COMMIT", |
b591480b BF |
997 | }, |
998 | [OP_CREATE] = { | |
999 | .op_func = (nfsd4op_func)nfsd4_create, | |
b001a1b6 | 1000 | .op_name = "OP_CREATE", |
b591480b BF |
1001 | }, |
1002 | [OP_DELEGRETURN] = { | |
1003 | .op_func = (nfsd4op_func)nfsd4_delegreturn, | |
b001a1b6 | 1004 | .op_name = "OP_DELEGRETURN", |
b591480b BF |
1005 | }, |
1006 | [OP_GETATTR] = { | |
1007 | .op_func = (nfsd4op_func)nfsd4_getattr, | |
eeac294e | 1008 | .op_flags = ALLOWED_ON_ABSENT_FS, |
b001a1b6 | 1009 | .op_name = "OP_GETATTR", |
b591480b BF |
1010 | }, |
1011 | [OP_GETFH] = { | |
1012 | .op_func = (nfsd4op_func)nfsd4_getfh, | |
b001a1b6 | 1013 | .op_name = "OP_GETFH", |
b591480b BF |
1014 | }, |
1015 | [OP_LINK] = { | |
1016 | .op_func = (nfsd4op_func)nfsd4_link, | |
b001a1b6 | 1017 | .op_name = "OP_LINK", |
b591480b BF |
1018 | }, |
1019 | [OP_LOCK] = { | |
1020 | .op_func = (nfsd4op_func)nfsd4_lock, | |
b001a1b6 | 1021 | .op_name = "OP_LOCK", |
b591480b BF |
1022 | }, |
1023 | [OP_LOCKT] = { | |
1024 | .op_func = (nfsd4op_func)nfsd4_lockt, | |
b001a1b6 | 1025 | .op_name = "OP_LOCKT", |
b591480b BF |
1026 | }, |
1027 | [OP_LOCKU] = { | |
1028 | .op_func = (nfsd4op_func)nfsd4_locku, | |
b001a1b6 | 1029 | .op_name = "OP_LOCKU", |
b591480b BF |
1030 | }, |
1031 | [OP_LOOKUP] = { | |
1032 | .op_func = (nfsd4op_func)nfsd4_lookup, | |
b001a1b6 | 1033 | .op_name = "OP_LOOKUP", |
b591480b BF |
1034 | }, |
1035 | [OP_LOOKUPP] = { | |
1036 | .op_func = (nfsd4op_func)nfsd4_lookupp, | |
b001a1b6 | 1037 | .op_name = "OP_LOOKUPP", |
b591480b BF |
1038 | }, |
1039 | [OP_NVERIFY] = { | |
1040 | .op_func = (nfsd4op_func)nfsd4_nverify, | |
b001a1b6 | 1041 | .op_name = "OP_NVERIFY", |
b591480b BF |
1042 | }, |
1043 | [OP_OPEN] = { | |
1044 | .op_func = (nfsd4op_func)nfsd4_open, | |
b001a1b6 | 1045 | .op_name = "OP_OPEN", |
b591480b BF |
1046 | }, |
1047 | [OP_OPEN_CONFIRM] = { | |
1048 | .op_func = (nfsd4op_func)nfsd4_open_confirm, | |
b001a1b6 | 1049 | .op_name = "OP_OPEN_CONFIRM", |
b591480b BF |
1050 | }, |
1051 | [OP_OPEN_DOWNGRADE] = { | |
1052 | .op_func = (nfsd4op_func)nfsd4_open_downgrade, | |
b001a1b6 | 1053 | .op_name = "OP_OPEN_DOWNGRADE", |
b591480b BF |
1054 | }, |
1055 | [OP_PUTFH] = { | |
1056 | .op_func = (nfsd4op_func)nfsd4_putfh, | |
27d630ec | 1057 | .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS, |
b001a1b6 | 1058 | .op_name = "OP_PUTFH", |
b591480b | 1059 | }, |
eeac294e | 1060 | [OP_PUTPUBFH] = { |
a1c8c4d1 | 1061 | .op_func = (nfsd4op_func)nfsd4_putrootfh, |
27d630ec | 1062 | .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS, |
b001a1b6 | 1063 | .op_name = "OP_PUTPUBFH", |
eeac294e | 1064 | }, |
b591480b BF |
1065 | [OP_PUTROOTFH] = { |
1066 | .op_func = (nfsd4op_func)nfsd4_putrootfh, | |
27d630ec | 1067 | .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS, |
b001a1b6 | 1068 | .op_name = "OP_PUTROOTFH", |
b591480b BF |
1069 | }, |
1070 | [OP_READ] = { | |
1071 | .op_func = (nfsd4op_func)nfsd4_read, | |
b001a1b6 | 1072 | .op_name = "OP_READ", |
b591480b BF |
1073 | }, |
1074 | [OP_READDIR] = { | |
1075 | .op_func = (nfsd4op_func)nfsd4_readdir, | |
b001a1b6 | 1076 | .op_name = "OP_READDIR", |
b591480b BF |
1077 | }, |
1078 | [OP_READLINK] = { | |
1079 | .op_func = (nfsd4op_func)nfsd4_readlink, | |
b001a1b6 | 1080 | .op_name = "OP_READLINK", |
b591480b BF |
1081 | }, |
1082 | [OP_REMOVE] = { | |
1083 | .op_func = (nfsd4op_func)nfsd4_remove, | |
b001a1b6 | 1084 | .op_name = "OP_REMOVE", |
b591480b BF |
1085 | }, |
1086 | [OP_RENAME] = { | |
b001a1b6 | 1087 | .op_name = "OP_RENAME", |
b591480b BF |
1088 | .op_func = (nfsd4op_func)nfsd4_rename, |
1089 | }, | |
1090 | [OP_RENEW] = { | |
1091 | .op_func = (nfsd4op_func)nfsd4_renew, | |
27d630ec | 1092 | .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS, |
b001a1b6 | 1093 | .op_name = "OP_RENEW", |
b591480b BF |
1094 | }, |
1095 | [OP_RESTOREFH] = { | |
1096 | .op_func = (nfsd4op_func)nfsd4_restorefh, | |
27d630ec | 1097 | .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS, |
b001a1b6 | 1098 | .op_name = "OP_RESTOREFH", |
b591480b BF |
1099 | }, |
1100 | [OP_SAVEFH] = { | |
1101 | .op_func = (nfsd4op_func)nfsd4_savefh, | |
b001a1b6 | 1102 | .op_name = "OP_SAVEFH", |
b591480b | 1103 | }, |
dcb488a3 AA |
1104 | [OP_SECINFO] = { |
1105 | .op_func = (nfsd4op_func)nfsd4_secinfo, | |
b001a1b6 | 1106 | .op_name = "OP_SECINFO", |
dcb488a3 | 1107 | }, |
b591480b BF |
1108 | [OP_SETATTR] = { |
1109 | .op_func = (nfsd4op_func)nfsd4_setattr, | |
b001a1b6 | 1110 | .op_name = "OP_SETATTR", |
b591480b BF |
1111 | }, |
1112 | [OP_SETCLIENTID] = { | |
1113 | .op_func = (nfsd4op_func)nfsd4_setclientid, | |
27d630ec | 1114 | .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS, |
b001a1b6 | 1115 | .op_name = "OP_SETCLIENTID", |
b591480b BF |
1116 | }, |
1117 | [OP_SETCLIENTID_CONFIRM] = { | |
1118 | .op_func = (nfsd4op_func)nfsd4_setclientid_confirm, | |
27d630ec | 1119 | .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS, |
b001a1b6 | 1120 | .op_name = "OP_SETCLIENTID_CONFIRM", |
b591480b BF |
1121 | }, |
1122 | [OP_VERIFY] = { | |
1123 | .op_func = (nfsd4op_func)nfsd4_verify, | |
b001a1b6 | 1124 | .op_name = "OP_VERIFY", |
b591480b BF |
1125 | }, |
1126 | [OP_WRITE] = { | |
1127 | .op_func = (nfsd4op_func)nfsd4_write, | |
b001a1b6 | 1128 | .op_name = "OP_WRITE", |
b591480b BF |
1129 | }, |
1130 | [OP_RELEASE_LOCKOWNER] = { | |
1131 | .op_func = (nfsd4op_func)nfsd4_release_lockowner, | |
27d630ec | 1132 | .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS, |
b001a1b6 | 1133 | .op_name = "OP_RELEASE_LOCKOWNER", |
b591480b | 1134 | }, |
069b6ad4 AA |
1135 | |
1136 | /* NFSv4.1 operations */ | |
1137 | [OP_EXCHANGE_ID] = { | |
1138 | .op_func = (nfsd4op_func)nfsd4_exchange_id, | |
f9bb94c4 | 1139 | .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP, |
069b6ad4 AA |
1140 | .op_name = "OP_EXCHANGE_ID", |
1141 | }, | |
1142 | [OP_CREATE_SESSION] = { | |
1143 | .op_func = (nfsd4op_func)nfsd4_create_session, | |
f9bb94c4 | 1144 | .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP, |
069b6ad4 AA |
1145 | .op_name = "OP_CREATE_SESSION", |
1146 | }, | |
1147 | [OP_DESTROY_SESSION] = { | |
1148 | .op_func = (nfsd4op_func)nfsd4_destroy_session, | |
f9bb94c4 | 1149 | .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP, |
069b6ad4 AA |
1150 | .op_name = "OP_DESTROY_SESSION", |
1151 | }, | |
1152 | [OP_SEQUENCE] = { | |
1153 | .op_func = (nfsd4op_func)nfsd4_sequence, | |
f9bb94c4 | 1154 | .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP, |
069b6ad4 AA |
1155 | .op_name = "OP_SEQUENCE", |
1156 | }, | |
b591480b BF |
1157 | }; |
1158 | ||
f1c7f79b | 1159 | static const char *nfsd4_op_name(unsigned opnum) |
b001a1b6 BH |
1160 | { |
1161 | if (opnum < ARRAY_SIZE(nfsd4_ops)) | |
1162 | return nfsd4_ops[opnum].op_name; | |
1163 | return "unknown_operation"; | |
1164 | } | |
1165 | ||
1da177e4 LT |
1166 | #define nfs4svc_decode_voidargs NULL |
1167 | #define nfs4svc_release_void NULL | |
1168 | #define nfsd4_voidres nfsd4_voidargs | |
1169 | #define nfs4svc_release_compound NULL | |
1170 | struct nfsd4_voidargs { int dummy; }; | |
1171 | ||
1172 | #define PROC(name, argt, rest, relt, cache, respsize) \ | |
1173 | { (svc_procfunc) nfsd4_proc_##name, \ | |
1174 | (kxdrproc_t) nfs4svc_decode_##argt##args, \ | |
1175 | (kxdrproc_t) nfs4svc_encode_##rest##res, \ | |
1176 | (kxdrproc_t) nfs4svc_release_##relt, \ | |
1177 | sizeof(struct nfsd4_##argt##args), \ | |
1178 | sizeof(struct nfsd4_##rest##res), \ | |
1179 | 0, \ | |
1180 | cache, \ | |
1181 | respsize, \ | |
1182 | } | |
1183 | ||
1184 | /* | |
1185 | * TODO: At the present time, the NFSv4 server does not do XID caching | |
1186 | * of requests. Implementing XID caching would not be a serious problem, | |
1187 | * although it would require a mild change in interfaces since one | |
1188 | * doesn't know whether an NFSv4 request is idempotent until after the | |
1189 | * XDR decode. However, XID caching totally confuses pynfs (Peter | |
1190 | * Astrand's regression testsuite for NFSv4 servers), which reuses | |
1191 | * XID's liberally, so I've left it unimplemented until pynfs generates | |
1192 | * better XID's. | |
1193 | */ | |
1194 | static struct svc_procedure nfsd_procedures4[2] = { | |
1195 | PROC(null, void, void, void, RC_NOCACHE, 1), | |
7775f4c8 | 1196 | PROC(compound, compound, compound, compound, RC_NOCACHE, NFSD_BUFSIZE/4) |
1da177e4 LT |
1197 | }; |
1198 | ||
1199 | struct svc_version nfsd_version4 = { | |
1200 | .vs_vers = 4, | |
1201 | .vs_nproc = 2, | |
1202 | .vs_proc = nfsd_procedures4, | |
1203 | .vs_dispatch = nfsd_dispatch, | |
1204 | .vs_xdrsize = NFS4_SVC_XDRSIZE, | |
1205 | }; | |
1206 | ||
1207 | /* | |
1208 | * Local variables: | |
1209 | * c-basic-offset: 8 | |
1210 | * End: | |
1211 | */ |