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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 */ |
af85852d BF |
126 | open->op_stateowner->so_replay.rp_openfh_len = resfh.fh_handle.fh_size; |
127 | memcpy(open->op_stateowner->so_replay.rp_openfh, | |
128 | &resfh.fh_handle.fh_base, resfh.fh_handle.fh_size); | |
1da177e4 | 129 | |
81ac95c5 | 130 | if (!created) |
8837abca MS |
131 | status = do_open_permission(rqstp, current_fh, open, |
132 | NFSD_MAY_NOP); | |
1da177e4 | 133 | |
af85852d | 134 | out: |
1da177e4 LT |
135 | fh_put(&resfh); |
136 | return status; | |
137 | } | |
138 | ||
b37ad28b | 139 | static __be32 |
1da177e4 LT |
140 | do_open_fhandle(struct svc_rqst *rqstp, struct svc_fh *current_fh, struct nfsd4_open *open) |
141 | { | |
b37ad28b | 142 | __be32 status; |
1da177e4 LT |
143 | |
144 | /* Only reclaims from previously confirmed clients are valid */ | |
145 | if ((status = nfs4_check_open_reclaim(&open->op_clientid))) | |
146 | return status; | |
147 | ||
148 | /* We don't know the target directory, and therefore can not | |
149 | * set the change info | |
150 | */ | |
151 | ||
152 | memset(&open->op_cinfo, 0, sizeof(struct nfsd4_change_info)); | |
153 | ||
154 | /* set replay cache */ | |
155 | open->op_stateowner->so_replay.rp_openfh_len = current_fh->fh_handle.fh_size; | |
156 | memcpy(open->op_stateowner->so_replay.rp_openfh, | |
157 | ¤t_fh->fh_handle.fh_base, | |
158 | current_fh->fh_handle.fh_size); | |
159 | ||
160 | open->op_truncate = (open->op_iattr.ia_valid & ATTR_SIZE) && | |
161 | (open->op_iattr.ia_size == 0); | |
162 | ||
8837abca MS |
163 | status = do_open_permission(rqstp, current_fh, open, |
164 | NFSD_MAY_OWNER_OVERRIDE); | |
1da177e4 LT |
165 | |
166 | return status; | |
167 | } | |
168 | ||
169 | ||
7191155b | 170 | static __be32 |
ca364317 | 171 | nfsd4_open(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
a4f1706a | 172 | struct nfsd4_open *open) |
1da177e4 | 173 | { |
b37ad28b | 174 | __be32 status; |
1da177e4 LT |
175 | dprintk("NFSD: nfsd4_open filename %.*s op_stateowner %p\n", |
176 | (int)open->op_fname.len, open->op_fname.data, | |
177 | open->op_stateowner); | |
178 | ||
1da177e4 LT |
179 | /* This check required by spec. */ |
180 | if (open->op_create && open->op_claim_type != NFS4_OPEN_CLAIM_NULL) | |
181 | return nfserr_inval; | |
182 | ||
183 | nfs4_lock_state(); | |
184 | ||
185 | /* check seqid for replay. set nfs4_owner */ | |
186 | status = nfsd4_process_open1(open); | |
a90b061c | 187 | if (status == nfserr_replay_me) { |
1da177e4 | 188 | struct nfs4_replay *rp = &open->op_stateowner->so_replay; |
ca364317 BF |
189 | fh_put(&cstate->current_fh); |
190 | cstate->current_fh.fh_handle.fh_size = rp->rp_openfh_len; | |
191 | memcpy(&cstate->current_fh.fh_handle.fh_base, rp->rp_openfh, | |
1da177e4 | 192 | rp->rp_openfh_len); |
8837abca | 193 | status = fh_verify(rqstp, &cstate->current_fh, 0, NFSD_MAY_NOP); |
1da177e4 LT |
194 | if (status) |
195 | dprintk("nfsd4_open: replay failed" | |
196 | " restoring previous filehandle\n"); | |
197 | else | |
a90b061c | 198 | status = nfserr_replay_me; |
1da177e4 LT |
199 | } |
200 | if (status) | |
201 | goto out; | |
fb553c0f BF |
202 | |
203 | /* Openowner is now set, so sequence id will get bumped. Now we need | |
204 | * these checks before we do any creates: */ | |
cbd0d51a | 205 | status = nfserr_grace; |
af558e33 | 206 | if (locks_in_grace() && open->op_claim_type != NFS4_OPEN_CLAIM_PREVIOUS) |
cbd0d51a BF |
207 | goto out; |
208 | status = nfserr_no_grace; | |
af558e33 | 209 | if (!locks_in_grace() && open->op_claim_type == NFS4_OPEN_CLAIM_PREVIOUS) |
cbd0d51a | 210 | goto out; |
fb553c0f | 211 | |
1da177e4 | 212 | switch (open->op_claim_type) { |
0dd3c192 N |
213 | case NFS4_OPEN_CLAIM_DELEGATE_CUR: |
214 | status = nfserr_inval; | |
215 | if (open->op_create) | |
216 | goto out; | |
217 | /* fall through */ | |
1da177e4 LT |
218 | case NFS4_OPEN_CLAIM_NULL: |
219 | /* | |
220 | * (1) set CURRENT_FH to the file being opened, | |
221 | * creating it if necessary, (2) set open->op_cinfo, | |
222 | * (3) set open->op_truncate if the file is to be | |
223 | * truncated after opening, (4) do permission checking. | |
224 | */ | |
ca364317 BF |
225 | status = do_open_lookup(rqstp, &cstate->current_fh, |
226 | open); | |
1da177e4 LT |
227 | if (status) |
228 | goto out; | |
229 | break; | |
230 | case NFS4_OPEN_CLAIM_PREVIOUS: | |
a525825d | 231 | open->op_stateowner->so_confirmed = 1; |
1da177e4 LT |
232 | /* |
233 | * The CURRENT_FH is already set to the file being | |
234 | * opened. (1) set open->op_cinfo, (2) set | |
235 | * open->op_truncate if the file is to be truncated | |
236 | * after opening, (3) do permission checking. | |
237 | */ | |
ca364317 BF |
238 | status = do_open_fhandle(rqstp, &cstate->current_fh, |
239 | open); | |
1da177e4 LT |
240 | if (status) |
241 | goto out; | |
242 | break; | |
1da177e4 | 243 | case NFS4_OPEN_CLAIM_DELEGATE_PREV: |
a525825d | 244 | open->op_stateowner->so_confirmed = 1; |
2fdada03 | 245 | dprintk("NFSD: unsupported OPEN claim type %d\n", |
1da177e4 LT |
246 | open->op_claim_type); |
247 | status = nfserr_notsupp; | |
248 | goto out; | |
249 | default: | |
2fdada03 | 250 | dprintk("NFSD: Invalid OPEN claim type %d\n", |
1da177e4 LT |
251 | open->op_claim_type); |
252 | status = nfserr_inval; | |
253 | goto out; | |
254 | } | |
255 | /* | |
256 | * nfsd4_process_open2() does the actual opening of the file. If | |
257 | * successful, it (1) truncates the file if open->op_truncate was | |
258 | * set, (2) sets open->op_stateid, (3) sets open->op_delegation. | |
259 | */ | |
ca364317 | 260 | status = nfsd4_process_open2(rqstp, &cstate->current_fh, open); |
1da177e4 | 261 | out: |
f2327d9a | 262 | if (open->op_stateowner) { |
1da177e4 | 263 | nfs4_get_stateowner(open->op_stateowner); |
a4f1706a | 264 | cstate->replay_owner = open->op_stateowner; |
f2327d9a | 265 | } |
1da177e4 LT |
266 | nfs4_unlock_state(); |
267 | return status; | |
268 | } | |
269 | ||
270 | /* | |
271 | * filehandle-manipulating ops. | |
272 | */ | |
7191155b | 273 | static __be32 |
b591480b BF |
274 | nfsd4_getfh(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
275 | struct svc_fh **getfh) | |
1da177e4 | 276 | { |
ca364317 | 277 | if (!cstate->current_fh.fh_dentry) |
1da177e4 LT |
278 | return nfserr_nofilehandle; |
279 | ||
ca364317 | 280 | *getfh = &cstate->current_fh; |
1da177e4 LT |
281 | return nfs_ok; |
282 | } | |
283 | ||
7191155b | 284 | static __be32 |
ca364317 BF |
285 | nfsd4_putfh(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
286 | struct nfsd4_putfh *putfh) | |
1da177e4 | 287 | { |
ca364317 BF |
288 | fh_put(&cstate->current_fh); |
289 | cstate->current_fh.fh_handle.fh_size = putfh->pf_fhlen; | |
290 | memcpy(&cstate->current_fh.fh_handle.fh_base, putfh->pf_fhval, | |
291 | putfh->pf_fhlen); | |
8837abca | 292 | return fh_verify(rqstp, &cstate->current_fh, 0, NFSD_MAY_NOP); |
1da177e4 LT |
293 | } |
294 | ||
7191155b | 295 | static __be32 |
b591480b BF |
296 | nfsd4_putrootfh(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
297 | void *arg) | |
1da177e4 | 298 | { |
b37ad28b | 299 | __be32 status; |
1da177e4 | 300 | |
ca364317 | 301 | fh_put(&cstate->current_fh); |
df547efb | 302 | status = exp_pseudoroot(rqstp, &cstate->current_fh); |
1da177e4 LT |
303 | return status; |
304 | } | |
305 | ||
7191155b | 306 | static __be32 |
b591480b BF |
307 | nfsd4_restorefh(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
308 | void *arg) | |
1da177e4 | 309 | { |
ca364317 | 310 | if (!cstate->save_fh.fh_dentry) |
1da177e4 LT |
311 | return nfserr_restorefh; |
312 | ||
ca364317 | 313 | fh_dup2(&cstate->current_fh, &cstate->save_fh); |
1da177e4 LT |
314 | return nfs_ok; |
315 | } | |
316 | ||
7191155b | 317 | static __be32 |
b591480b BF |
318 | nfsd4_savefh(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
319 | void *arg) | |
1da177e4 | 320 | { |
ca364317 | 321 | if (!cstate->current_fh.fh_dentry) |
1da177e4 LT |
322 | return nfserr_nofilehandle; |
323 | ||
ca364317 | 324 | fh_dup2(&cstate->save_fh, &cstate->current_fh); |
1da177e4 LT |
325 | return nfs_ok; |
326 | } | |
327 | ||
328 | /* | |
329 | * misc nfsv4 ops | |
330 | */ | |
7191155b | 331 | static __be32 |
ca364317 BF |
332 | nfsd4_access(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
333 | struct nfsd4_access *access) | |
1da177e4 LT |
334 | { |
335 | if (access->ac_req_access & ~NFS3_ACCESS_FULL) | |
336 | return nfserr_inval; | |
337 | ||
338 | access->ac_resp_access = access->ac_req_access; | |
ca364317 BF |
339 | return nfsd_access(rqstp, &cstate->current_fh, &access->ac_resp_access, |
340 | &access->ac_supported); | |
1da177e4 LT |
341 | } |
342 | ||
7191155b | 343 | static __be32 |
ca364317 BF |
344 | nfsd4_commit(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
345 | struct nfsd4_commit *commit) | |
1da177e4 | 346 | { |
b37ad28b | 347 | __be32 status; |
1da177e4 LT |
348 | |
349 | u32 *p = (u32 *)commit->co_verf.data; | |
350 | *p++ = nfssvc_boot.tv_sec; | |
351 | *p++ = nfssvc_boot.tv_usec; | |
352 | ||
ca364317 BF |
353 | status = nfsd_commit(rqstp, &cstate->current_fh, commit->co_offset, |
354 | commit->co_count); | |
1da177e4 LT |
355 | if (status == nfserr_symlink) |
356 | status = nfserr_inval; | |
357 | return status; | |
358 | } | |
359 | ||
b37ad28b | 360 | static __be32 |
ca364317 BF |
361 | nfsd4_create(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
362 | struct nfsd4_create *create) | |
1da177e4 LT |
363 | { |
364 | struct svc_fh resfh; | |
b37ad28b | 365 | __be32 status; |
1da177e4 LT |
366 | dev_t rdev; |
367 | ||
368 | fh_init(&resfh, NFS4_FHSIZE); | |
369 | ||
8837abca MS |
370 | status = fh_verify(rqstp, &cstate->current_fh, S_IFDIR, |
371 | NFSD_MAY_CREATE); | |
1da177e4 LT |
372 | if (status == nfserr_symlink) |
373 | status = nfserr_notdir; | |
374 | if (status) | |
375 | return status; | |
376 | ||
377 | switch (create->cr_type) { | |
378 | case NF4LNK: | |
379 | /* ugh! we have to null-terminate the linktext, or | |
380 | * vfs_symlink() will choke. it is always safe to | |
381 | * null-terminate by brute force, since at worst we | |
382 | * will overwrite the first byte of the create namelen | |
383 | * in the XDR buffer, which has already been extracted | |
384 | * during XDR decode. | |
385 | */ | |
386 | create->cr_linkname[create->cr_linklen] = 0; | |
387 | ||
ca364317 BF |
388 | status = nfsd_symlink(rqstp, &cstate->current_fh, |
389 | create->cr_name, create->cr_namelen, | |
390 | create->cr_linkname, create->cr_linklen, | |
391 | &resfh, &create->cr_iattr); | |
1da177e4 LT |
392 | break; |
393 | ||
394 | case NF4BLK: | |
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_IFBLK, rdev, &resfh); | |
1da177e4 LT |
402 | break; |
403 | ||
404 | case NF4CHR: | |
405 | rdev = MKDEV(create->cr_specdata1, create->cr_specdata2); | |
406 | if (MAJOR(rdev) != create->cr_specdata1 || | |
407 | MINOR(rdev) != create->cr_specdata2) | |
408 | return nfserr_inval; | |
ca364317 BF |
409 | status = nfsd_create(rqstp, &cstate->current_fh, |
410 | create->cr_name, create->cr_namelen, | |
411 | &create->cr_iattr,S_IFCHR, rdev, &resfh); | |
1da177e4 LT |
412 | break; |
413 | ||
414 | case NF4SOCK: | |
ca364317 BF |
415 | status = nfsd_create(rqstp, &cstate->current_fh, |
416 | create->cr_name, create->cr_namelen, | |
417 | &create->cr_iattr, S_IFSOCK, 0, &resfh); | |
1da177e4 LT |
418 | break; |
419 | ||
420 | case NF4FIFO: | |
ca364317 BF |
421 | status = nfsd_create(rqstp, &cstate->current_fh, |
422 | create->cr_name, create->cr_namelen, | |
423 | &create->cr_iattr, S_IFIFO, 0, &resfh); | |
1da177e4 LT |
424 | break; |
425 | ||
426 | case NF4DIR: | |
427 | create->cr_iattr.ia_valid &= ~ATTR_SIZE; | |
ca364317 BF |
428 | status = nfsd_create(rqstp, &cstate->current_fh, |
429 | create->cr_name, create->cr_namelen, | |
430 | &create->cr_iattr, S_IFDIR, 0, &resfh); | |
1da177e4 LT |
431 | break; |
432 | ||
433 | default: | |
434 | status = nfserr_badtype; | |
435 | } | |
436 | ||
437 | if (!status) { | |
ca364317 BF |
438 | fh_unlock(&cstate->current_fh); |
439 | set_change_info(&create->cr_cinfo, &cstate->current_fh); | |
440 | fh_dup2(&cstate->current_fh, &resfh); | |
1da177e4 LT |
441 | } |
442 | ||
443 | fh_put(&resfh); | |
444 | return status; | |
445 | } | |
446 | ||
7191155b | 447 | static __be32 |
ca364317 BF |
448 | nfsd4_getattr(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
449 | struct nfsd4_getattr *getattr) | |
1da177e4 | 450 | { |
b37ad28b | 451 | __be32 status; |
1da177e4 | 452 | |
8837abca | 453 | status = fh_verify(rqstp, &cstate->current_fh, 0, NFSD_MAY_NOP); |
1da177e4 LT |
454 | if (status) |
455 | return status; | |
456 | ||
457 | if (getattr->ga_bmval[1] & NFSD_WRITEONLY_ATTRS_WORD1) | |
458 | return nfserr_inval; | |
459 | ||
460 | getattr->ga_bmval[0] &= NFSD_SUPPORTED_ATTRS_WORD0; | |
461 | getattr->ga_bmval[1] &= NFSD_SUPPORTED_ATTRS_WORD1; | |
462 | ||
ca364317 | 463 | getattr->ga_fhp = &cstate->current_fh; |
1da177e4 LT |
464 | return nfs_ok; |
465 | } | |
466 | ||
7191155b | 467 | static __be32 |
ca364317 BF |
468 | nfsd4_link(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
469 | struct nfsd4_link *link) | |
1da177e4 | 470 | { |
b37ad28b | 471 | __be32 status = nfserr_nofilehandle; |
1da177e4 | 472 | |
ca364317 | 473 | if (!cstate->save_fh.fh_dentry) |
1da177e4 | 474 | return status; |
ca364317 BF |
475 | status = nfsd_link(rqstp, &cstate->current_fh, |
476 | link->li_name, link->li_namelen, &cstate->save_fh); | |
1da177e4 | 477 | if (!status) |
ca364317 | 478 | set_change_info(&link->li_cinfo, &cstate->current_fh); |
1da177e4 LT |
479 | return status; |
480 | } | |
481 | ||
b37ad28b | 482 | static __be32 |
b591480b BF |
483 | nfsd4_lookupp(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
484 | void *arg) | |
1da177e4 LT |
485 | { |
486 | struct svc_fh tmp_fh; | |
b37ad28b | 487 | __be32 ret; |
1da177e4 LT |
488 | |
489 | fh_init(&tmp_fh, NFS4_FHSIZE); | |
df547efb BF |
490 | ret = exp_pseudoroot(rqstp, &tmp_fh); |
491 | if (ret) | |
1da177e4 | 492 | return ret; |
ca364317 | 493 | if (tmp_fh.fh_dentry == cstate->current_fh.fh_dentry) { |
1da177e4 LT |
494 | fh_put(&tmp_fh); |
495 | return nfserr_noent; | |
496 | } | |
497 | fh_put(&tmp_fh); | |
ca364317 BF |
498 | return nfsd_lookup(rqstp, &cstate->current_fh, |
499 | "..", 2, &cstate->current_fh); | |
1da177e4 LT |
500 | } |
501 | ||
7191155b | 502 | static __be32 |
ca364317 BF |
503 | nfsd4_lookup(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
504 | struct nfsd4_lookup *lookup) | |
1da177e4 | 505 | { |
ca364317 BF |
506 | return nfsd_lookup(rqstp, &cstate->current_fh, |
507 | lookup->lo_name, lookup->lo_len, | |
508 | &cstate->current_fh); | |
1da177e4 LT |
509 | } |
510 | ||
7191155b | 511 | static __be32 |
ca364317 BF |
512 | nfsd4_read(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
513 | struct nfsd4_read *read) | |
1da177e4 | 514 | { |
b37ad28b | 515 | __be32 status; |
1da177e4 LT |
516 | |
517 | /* no need to check permission - this will be done in nfsd_read() */ | |
518 | ||
7e06b7f9 | 519 | read->rd_filp = NULL; |
1da177e4 LT |
520 | if (read->rd_offset >= OFFSET_MAX) |
521 | return nfserr_inval; | |
522 | ||
523 | nfs4_lock_state(); | |
524 | /* check stateid */ | |
ca364317 BF |
525 | if ((status = nfs4_preprocess_stateid_op(&cstate->current_fh, |
526 | &read->rd_stateid, | |
7e06b7f9 | 527 | CHECK_FH | RD_STATE, &read->rd_filp))) { |
1da177e4 LT |
528 | dprintk("NFSD: nfsd4_read: couldn't process stateid!\n"); |
529 | goto out; | |
530 | } | |
7e06b7f9 N |
531 | if (read->rd_filp) |
532 | get_file(read->rd_filp); | |
1da177e4 LT |
533 | status = nfs_ok; |
534 | out: | |
535 | nfs4_unlock_state(); | |
536 | read->rd_rqstp = rqstp; | |
ca364317 | 537 | read->rd_fhp = &cstate->current_fh; |
1da177e4 LT |
538 | return status; |
539 | } | |
540 | ||
7191155b | 541 | static __be32 |
ca364317 BF |
542 | nfsd4_readdir(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
543 | struct nfsd4_readdir *readdir) | |
1da177e4 LT |
544 | { |
545 | u64 cookie = readdir->rd_cookie; | |
546 | static const nfs4_verifier zeroverf; | |
547 | ||
548 | /* no need to check permission - this will be done in nfsd_readdir() */ | |
549 | ||
550 | if (readdir->rd_bmval[1] & NFSD_WRITEONLY_ATTRS_WORD1) | |
551 | return nfserr_inval; | |
552 | ||
553 | readdir->rd_bmval[0] &= NFSD_SUPPORTED_ATTRS_WORD0; | |
554 | readdir->rd_bmval[1] &= NFSD_SUPPORTED_ATTRS_WORD1; | |
555 | ||
556 | if ((cookie > ~(u32)0) || (cookie == 1) || (cookie == 2) || | |
557 | (cookie == 0 && memcmp(readdir->rd_verf.data, zeroverf.data, NFS4_VERIFIER_SIZE))) | |
558 | return nfserr_bad_cookie; | |
559 | ||
560 | readdir->rd_rqstp = rqstp; | |
ca364317 | 561 | readdir->rd_fhp = &cstate->current_fh; |
1da177e4 LT |
562 | return nfs_ok; |
563 | } | |
564 | ||
7191155b | 565 | static __be32 |
ca364317 BF |
566 | nfsd4_readlink(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
567 | struct nfsd4_readlink *readlink) | |
1da177e4 LT |
568 | { |
569 | readlink->rl_rqstp = rqstp; | |
ca364317 | 570 | readlink->rl_fhp = &cstate->current_fh; |
1da177e4 LT |
571 | return nfs_ok; |
572 | } | |
573 | ||
7191155b | 574 | static __be32 |
ca364317 BF |
575 | nfsd4_remove(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
576 | struct nfsd4_remove *remove) | |
1da177e4 | 577 | { |
b37ad28b | 578 | __be32 status; |
1da177e4 | 579 | |
af558e33 | 580 | if (locks_in_grace()) |
c815afc7 | 581 | return nfserr_grace; |
ca364317 BF |
582 | status = nfsd_unlink(rqstp, &cstate->current_fh, 0, |
583 | remove->rm_name, remove->rm_namelen); | |
1da177e4 LT |
584 | if (status == nfserr_symlink) |
585 | return nfserr_notdir; | |
586 | if (!status) { | |
ca364317 BF |
587 | fh_unlock(&cstate->current_fh); |
588 | set_change_info(&remove->rm_cinfo, &cstate->current_fh); | |
1da177e4 LT |
589 | } |
590 | return status; | |
591 | } | |
592 | ||
7191155b | 593 | static __be32 |
ca364317 BF |
594 | nfsd4_rename(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
595 | struct nfsd4_rename *rename) | |
1da177e4 | 596 | { |
b37ad28b | 597 | __be32 status = nfserr_nofilehandle; |
1da177e4 | 598 | |
ca364317 | 599 | if (!cstate->save_fh.fh_dentry) |
1da177e4 | 600 | return status; |
af558e33 | 601 | if (locks_in_grace() && !(cstate->save_fh.fh_export->ex_flags |
c815afc7 N |
602 | & NFSEXP_NOSUBTREECHECK)) |
603 | return nfserr_grace; | |
ca364317 BF |
604 | status = nfsd_rename(rqstp, &cstate->save_fh, rename->rn_sname, |
605 | rename->rn_snamelen, &cstate->current_fh, | |
1da177e4 LT |
606 | rename->rn_tname, rename->rn_tnamelen); |
607 | ||
608 | /* the underlying filesystem returns different error's than required | |
609 | * by NFSv4. both save_fh and current_fh have been verified.. */ | |
610 | if (status == nfserr_isdir) | |
611 | status = nfserr_exist; | |
612 | else if ((status == nfserr_notdir) && | |
ca364317 BF |
613 | (S_ISDIR(cstate->save_fh.fh_dentry->d_inode->i_mode) && |
614 | S_ISDIR(cstate->current_fh.fh_dentry->d_inode->i_mode))) | |
1da177e4 LT |
615 | status = nfserr_exist; |
616 | else if (status == nfserr_symlink) | |
617 | status = nfserr_notdir; | |
618 | ||
619 | if (!status) { | |
ca364317 BF |
620 | set_change_info(&rename->rn_sinfo, &cstate->current_fh); |
621 | set_change_info(&rename->rn_tinfo, &cstate->save_fh); | |
1da177e4 LT |
622 | } |
623 | return status; | |
624 | } | |
625 | ||
dcb488a3 AA |
626 | static __be32 |
627 | nfsd4_secinfo(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, | |
628 | struct nfsd4_secinfo *secinfo) | |
629 | { | |
630 | struct svc_fh resfh; | |
631 | struct svc_export *exp; | |
632 | struct dentry *dentry; | |
633 | __be32 err; | |
634 | ||
635 | fh_init(&resfh, NFS4_FHSIZE); | |
636 | err = nfsd_lookup_dentry(rqstp, &cstate->current_fh, | |
637 | secinfo->si_name, secinfo->si_namelen, | |
638 | &exp, &dentry); | |
639 | if (err) | |
640 | return err; | |
641 | if (dentry->d_inode == NULL) { | |
642 | exp_put(exp); | |
643 | err = nfserr_noent; | |
644 | } else | |
645 | secinfo->si_exp = exp; | |
646 | dput(dentry); | |
647 | return err; | |
648 | } | |
649 | ||
7191155b | 650 | static __be32 |
ca364317 BF |
651 | nfsd4_setattr(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
652 | struct nfsd4_setattr *setattr) | |
1da177e4 | 653 | { |
b37ad28b | 654 | __be32 status = nfs_ok; |
1da177e4 | 655 | |
1da177e4 LT |
656 | if (setattr->sa_iattr.ia_valid & ATTR_SIZE) { |
657 | nfs4_lock_state(); | |
ca364317 | 658 | status = nfs4_preprocess_stateid_op(&cstate->current_fh, |
375c5547 | 659 | &setattr->sa_stateid, CHECK_FH | WR_STATE, NULL); |
1da177e4 | 660 | nfs4_unlock_state(); |
375c5547 | 661 | if (status) { |
3e3b4800 | 662 | dprintk("NFSD: nfsd4_setattr: couldn't process stateid!\n"); |
375c5547 BF |
663 | return status; |
664 | } | |
1da177e4 | 665 | } |
18f335af DH |
666 | status = mnt_want_write(cstate->current_fh.fh_export->ex_path.mnt); |
667 | if (status) | |
668 | return status; | |
1da177e4 LT |
669 | status = nfs_ok; |
670 | if (setattr->sa_acl != NULL) | |
ca364317 BF |
671 | status = nfsd4_set_nfs4_acl(rqstp, &cstate->current_fh, |
672 | setattr->sa_acl); | |
1da177e4 | 673 | if (status) |
18f335af | 674 | goto out; |
ca364317 | 675 | status = nfsd_setattr(rqstp, &cstate->current_fh, &setattr->sa_iattr, |
1da177e4 | 676 | 0, (time_t)0); |
18f335af DH |
677 | out: |
678 | mnt_drop_write(cstate->current_fh.fh_export->ex_path.mnt); | |
1da177e4 LT |
679 | return status; |
680 | } | |
681 | ||
7191155b | 682 | static __be32 |
ca364317 BF |
683 | nfsd4_write(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
684 | struct nfsd4_write *write) | |
1da177e4 LT |
685 | { |
686 | stateid_t *stateid = &write->wr_stateid; | |
687 | struct file *filp = NULL; | |
688 | u32 *p; | |
b37ad28b | 689 | __be32 status = nfs_ok; |
1da177e4 LT |
690 | |
691 | /* no need to check permission - this will be done in nfsd_write() */ | |
692 | ||
693 | if (write->wr_offset >= OFFSET_MAX) | |
694 | return nfserr_inval; | |
695 | ||
696 | nfs4_lock_state(); | |
ca364317 | 697 | status = nfs4_preprocess_stateid_op(&cstate->current_fh, stateid, |
375c5547 | 698 | CHECK_FH | WR_STATE, &filp); |
7e06b7f9 N |
699 | if (filp) |
700 | get_file(filp); | |
1da177e4 LT |
701 | nfs4_unlock_state(); |
702 | ||
375c5547 BF |
703 | if (status) { |
704 | dprintk("NFSD: nfsd4_write: couldn't process stateid!\n"); | |
705 | return status; | |
706 | } | |
707 | ||
1da177e4 LT |
708 | write->wr_bytes_written = write->wr_buflen; |
709 | write->wr_how_written = write->wr_stable_how; | |
710 | p = (u32 *)write->wr_verifier.data; | |
711 | *p++ = nfssvc_boot.tv_sec; | |
712 | *p++ = nfssvc_boot.tv_usec; | |
713 | ||
ca364317 BF |
714 | status = nfsd_write(rqstp, &cstate->current_fh, filp, |
715 | write->wr_offset, rqstp->rq_vec, write->wr_vlen, | |
716 | write->wr_buflen, &write->wr_how_written); | |
7e06b7f9 N |
717 | if (filp) |
718 | fput(filp); | |
1da177e4 LT |
719 | |
720 | if (status == nfserr_symlink) | |
721 | status = nfserr_inval; | |
722 | return status; | |
1da177e4 LT |
723 | } |
724 | ||
725 | /* This routine never returns NFS_OK! If there are no other errors, it | |
726 | * will return NFSERR_SAME or NFSERR_NOT_SAME depending on whether the | |
727 | * attributes matched. VERIFY is implemented by mapping NFSERR_SAME | |
728 | * to NFS_OK after the call; NVERIFY by mapping NFSERR_NOT_SAME to NFS_OK. | |
729 | */ | |
b37ad28b | 730 | static __be32 |
c954e2a5 | 731 | _nfsd4_verify(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
ca364317 | 732 | struct nfsd4_verify *verify) |
1da177e4 | 733 | { |
2ebbc012 | 734 | __be32 *buf, *p; |
1da177e4 | 735 | int count; |
b37ad28b | 736 | __be32 status; |
1da177e4 | 737 | |
8837abca | 738 | status = fh_verify(rqstp, &cstate->current_fh, 0, NFSD_MAY_NOP); |
1da177e4 LT |
739 | if (status) |
740 | return status; | |
741 | ||
742 | if ((verify->ve_bmval[0] & ~NFSD_SUPPORTED_ATTRS_WORD0) | |
743 | || (verify->ve_bmval[1] & ~NFSD_SUPPORTED_ATTRS_WORD1)) | |
744 | return nfserr_attrnotsupp; | |
745 | if ((verify->ve_bmval[0] & FATTR4_WORD0_RDATTR_ERROR) | |
746 | || (verify->ve_bmval[1] & NFSD_WRITEONLY_ATTRS_WORD1)) | |
747 | return nfserr_inval; | |
748 | if (verify->ve_attrlen & 3) | |
749 | return nfserr_inval; | |
750 | ||
751 | /* count in words: | |
752 | * bitmap_len(1) + bitmap(2) + attr_len(1) = 4 | |
753 | */ | |
754 | count = 4 + (verify->ve_attrlen >> 2); | |
755 | buf = kmalloc(count << 2, GFP_KERNEL); | |
756 | if (!buf) | |
757 | return nfserr_resource; | |
758 | ||
ca364317 BF |
759 | status = nfsd4_encode_fattr(&cstate->current_fh, |
760 | cstate->current_fh.fh_export, | |
761 | cstate->current_fh.fh_dentry, buf, | |
1da177e4 | 762 | &count, verify->ve_bmval, |
406a7ea9 | 763 | rqstp, 0); |
1da177e4 LT |
764 | |
765 | /* this means that nfsd4_encode_fattr() ran out of space */ | |
766 | if (status == nfserr_resource && count == 0) | |
767 | status = nfserr_not_same; | |
768 | if (status) | |
769 | goto out_kfree; | |
770 | ||
771 | p = buf + 3; | |
772 | status = nfserr_not_same; | |
773 | if (ntohl(*p++) != verify->ve_attrlen) | |
774 | goto out_kfree; | |
775 | if (!memcmp(p, verify->ve_attrval, verify->ve_attrlen)) | |
776 | status = nfserr_same; | |
777 | ||
778 | out_kfree: | |
779 | kfree(buf); | |
780 | return status; | |
781 | } | |
782 | ||
c954e2a5 BF |
783 | static __be32 |
784 | nfsd4_nverify(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, | |
785 | struct nfsd4_verify *verify) | |
786 | { | |
787 | __be32 status; | |
788 | ||
789 | status = _nfsd4_verify(rqstp, cstate, verify); | |
790 | return status == nfserr_not_same ? nfs_ok : status; | |
791 | } | |
792 | ||
793 | static __be32 | |
794 | nfsd4_verify(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, | |
795 | struct nfsd4_verify *verify) | |
796 | { | |
797 | __be32 status; | |
798 | ||
799 | status = _nfsd4_verify(rqstp, cstate, verify); | |
800 | return status == nfserr_same ? nfs_ok : status; | |
801 | } | |
802 | ||
1da177e4 LT |
803 | /* |
804 | * NULL call. | |
805 | */ | |
7111c66e | 806 | static __be32 |
1da177e4 LT |
807 | nfsd4_proc_null(struct svc_rqst *rqstp, void *argp, void *resp) |
808 | { | |
809 | return nfs_ok; | |
810 | } | |
811 | ||
e2b20950 SA |
812 | static inline void nfsd4_increment_op_stats(u32 opnum) |
813 | { | |
814 | if (opnum >= FIRST_NFS4_OP && opnum <= LAST_NFS4_OP) | |
815 | nfsdstats.nfs4_opcount[opnum]++; | |
816 | } | |
817 | ||
ca364317 BF |
818 | static void cstate_free(struct nfsd4_compound_state *cstate) |
819 | { | |
820 | if (cstate == NULL) | |
821 | return; | |
822 | fh_put(&cstate->current_fh); | |
823 | fh_put(&cstate->save_fh); | |
a4f1706a | 824 | BUG_ON(cstate->replay_owner); |
ca364317 BF |
825 | kfree(cstate); |
826 | } | |
827 | ||
828 | static struct nfsd4_compound_state *cstate_alloc(void) | |
829 | { | |
830 | struct nfsd4_compound_state *cstate; | |
831 | ||
832 | cstate = kmalloc(sizeof(struct nfsd4_compound_state), GFP_KERNEL); | |
833 | if (cstate == NULL) | |
834 | return NULL; | |
835 | fh_init(&cstate->current_fh, NFS4_FHSIZE); | |
836 | fh_init(&cstate->save_fh, NFS4_FHSIZE); | |
a4f1706a | 837 | cstate->replay_owner = NULL; |
ca364317 BF |
838 | return cstate; |
839 | } | |
1da177e4 | 840 | |
b591480b BF |
841 | typedef __be32(*nfsd4op_func)(struct svc_rqst *, struct nfsd4_compound_state *, |
842 | void *); | |
843 | ||
844 | struct nfsd4_operation { | |
845 | nfsd4op_func op_func; | |
846 | u32 op_flags; | |
27d630ec BF |
847 | /* Most ops require a valid current filehandle; a few don't: */ |
848 | #define ALLOWED_WITHOUT_FH 1 | |
eeac294e | 849 | /* GETATTR and ops not listed as returning NFS4ERR_MOVED: */ |
27d630ec | 850 | #define ALLOWED_ON_ABSENT_FS 2 |
b001a1b6 | 851 | char *op_name; |
b591480b BF |
852 | }; |
853 | ||
854 | static struct nfsd4_operation nfsd4_ops[]; | |
855 | ||
f1c7f79b | 856 | static const char *nfsd4_op_name(unsigned opnum); |
b001a1b6 | 857 | |
1da177e4 LT |
858 | /* |
859 | * COMPOUND call. | |
860 | */ | |
7111c66e | 861 | static __be32 |
1da177e4 LT |
862 | nfsd4_proc_compound(struct svc_rqst *rqstp, |
863 | struct nfsd4_compoundargs *args, | |
864 | struct nfsd4_compoundres *resp) | |
865 | { | |
866 | struct nfsd4_op *op; | |
b591480b | 867 | struct nfsd4_operation *opdesc; |
ca364317 | 868 | struct nfsd4_compound_state *cstate = NULL; |
e5710199 | 869 | int slack_bytes; |
b37ad28b | 870 | __be32 status; |
1da177e4 | 871 | |
1da177e4 LT |
872 | resp->xbuf = &rqstp->rq_res; |
873 | resp->p = rqstp->rq_res.head[0].iov_base + rqstp->rq_res.head[0].iov_len; | |
874 | resp->tagp = resp->p; | |
875 | /* reserve space for: taglen, tag, and opcnt */ | |
876 | resp->p += 2 + XDR_QUADLEN(args->taglen); | |
877 | resp->end = rqstp->rq_res.head[0].iov_base + PAGE_SIZE; | |
878 | resp->taglen = args->taglen; | |
879 | resp->tag = args->tag; | |
880 | resp->opcnt = 0; | |
881 | resp->rqstp = rqstp; | |
882 | ||
883 | /* | |
884 | * According to RFC3010, this takes precedence over all other errors. | |
885 | */ | |
886 | status = nfserr_minor_vers_mismatch; | |
887 | if (args->minorversion > NFSD_SUPPORTED_MINOR_VERSION) | |
888 | goto out; | |
889 | ||
c228c24b AA |
890 | status = nfserr_resource; |
891 | cstate = cstate_alloc(); | |
892 | if (cstate == NULL) | |
893 | goto out; | |
894 | ||
1da177e4 LT |
895 | status = nfs_ok; |
896 | while (!status && resp->opcnt < args->opcnt) { | |
897 | op = &args->ops[resp->opcnt++]; | |
898 | ||
b001a1b6 BH |
899 | dprintk("nfsv4 compound op #%d/%d: %d (%s)\n", |
900 | resp->opcnt, args->opcnt, op->opnum, | |
901 | nfsd4_op_name(op->opnum)); | |
fd445277 | 902 | |
1da177e4 LT |
903 | /* |
904 | * The XDR decode routines may have pre-set op->status; | |
905 | * for example, if there is a miscellaneous XDR error | |
906 | * it will be set to nfserr_bad_xdr. | |
907 | */ | |
908 | if (op->status) | |
909 | goto encode_op; | |
910 | ||
911 | /* We must be able to encode a successful response to | |
912 | * this operation, with enough room left over to encode a | |
913 | * failed response to the next operation. If we don't | |
914 | * have enough room, fail with ERR_RESOURCE. | |
915 | */ | |
e5710199 BF |
916 | slack_bytes = (char *)resp->end - (char *)resp->p; |
917 | if (slack_bytes < COMPOUND_SLACK_SPACE | |
918 | + COMPOUND_ERR_SLACK_SPACE) { | |
919 | BUG_ON(slack_bytes < COMPOUND_ERR_SLACK_SPACE); | |
1da177e4 LT |
920 | op->status = nfserr_resource; |
921 | goto encode_op; | |
922 | } | |
923 | ||
b591480b BF |
924 | opdesc = &nfsd4_ops[op->opnum]; |
925 | ||
ca364317 | 926 | if (!cstate->current_fh.fh_dentry) { |
27d630ec | 927 | if (!(opdesc->op_flags & ALLOWED_WITHOUT_FH)) { |
42ca0993 BF |
928 | op->status = nfserr_nofilehandle; |
929 | goto encode_op; | |
930 | } | |
eeac294e BF |
931 | } else if (cstate->current_fh.fh_export->ex_fslocs.migrated && |
932 | !(opdesc->op_flags & ALLOWED_ON_ABSENT_FS)) { | |
42ca0993 | 933 | op->status = nfserr_moved; |
1da177e4 LT |
934 | goto encode_op; |
935 | } | |
b591480b BF |
936 | |
937 | if (opdesc->op_func) | |
938 | op->status = opdesc->op_func(rqstp, cstate, &op->u); | |
939 | else | |
1da177e4 | 940 | BUG_ON(op->status == nfs_ok); |
1da177e4 LT |
941 | |
942 | encode_op: | |
a90b061c | 943 | if (op->status == nfserr_replay_me) { |
a4f1706a | 944 | op->replay = &cstate->replay_owner->so_replay; |
1da177e4 LT |
945 | nfsd4_encode_replay(resp, op); |
946 | status = op->status = op->replay->rp_status; | |
947 | } else { | |
948 | nfsd4_encode_operation(resp, op); | |
949 | status = op->status; | |
950 | } | |
0407717d BH |
951 | |
952 | dprintk("nfsv4 compound op %p opcnt %d #%d: %d: status %d\n", | |
953 | args->ops, args->opcnt, resp->opcnt, op->opnum, | |
954 | be32_to_cpu(status)); | |
955 | ||
a4f1706a BF |
956 | if (cstate->replay_owner) { |
957 | nfs4_put_stateowner(cstate->replay_owner); | |
958 | cstate->replay_owner = NULL; | |
1da177e4 | 959 | } |
7e06b7f9 N |
960 | /* XXX Ugh, we need to get rid of this kind of special case: */ |
961 | if (op->opnum == OP_READ && op->u.read.rd_filp) | |
962 | fput(op->u.read.rd_filp); | |
e2b20950 SA |
963 | |
964 | nfsd4_increment_op_stats(op->opnum); | |
1da177e4 LT |
965 | } |
966 | ||
c228c24b | 967 | cstate_free(cstate); |
1da177e4 LT |
968 | out: |
969 | nfsd4_release_compoundargs(args); | |
3b12cd98 | 970 | dprintk("nfsv4 compound returned %d\n", ntohl(status)); |
1da177e4 LT |
971 | return status; |
972 | } | |
973 | ||
b591480b BF |
974 | static struct nfsd4_operation nfsd4_ops[OP_RELEASE_LOCKOWNER+1] = { |
975 | [OP_ACCESS] = { | |
976 | .op_func = (nfsd4op_func)nfsd4_access, | |
b001a1b6 | 977 | .op_name = "OP_ACCESS", |
b591480b BF |
978 | }, |
979 | [OP_CLOSE] = { | |
980 | .op_func = (nfsd4op_func)nfsd4_close, | |
b001a1b6 | 981 | .op_name = "OP_CLOSE", |
b591480b BF |
982 | }, |
983 | [OP_COMMIT] = { | |
984 | .op_func = (nfsd4op_func)nfsd4_commit, | |
b001a1b6 | 985 | .op_name = "OP_COMMIT", |
b591480b BF |
986 | }, |
987 | [OP_CREATE] = { | |
988 | .op_func = (nfsd4op_func)nfsd4_create, | |
b001a1b6 | 989 | .op_name = "OP_CREATE", |
b591480b BF |
990 | }, |
991 | [OP_DELEGRETURN] = { | |
992 | .op_func = (nfsd4op_func)nfsd4_delegreturn, | |
b001a1b6 | 993 | .op_name = "OP_DELEGRETURN", |
b591480b BF |
994 | }, |
995 | [OP_GETATTR] = { | |
996 | .op_func = (nfsd4op_func)nfsd4_getattr, | |
eeac294e | 997 | .op_flags = ALLOWED_ON_ABSENT_FS, |
b001a1b6 | 998 | .op_name = "OP_GETATTR", |
b591480b BF |
999 | }, |
1000 | [OP_GETFH] = { | |
1001 | .op_func = (nfsd4op_func)nfsd4_getfh, | |
b001a1b6 | 1002 | .op_name = "OP_GETFH", |
b591480b BF |
1003 | }, |
1004 | [OP_LINK] = { | |
1005 | .op_func = (nfsd4op_func)nfsd4_link, | |
b001a1b6 | 1006 | .op_name = "OP_LINK", |
b591480b BF |
1007 | }, |
1008 | [OP_LOCK] = { | |
1009 | .op_func = (nfsd4op_func)nfsd4_lock, | |
b001a1b6 | 1010 | .op_name = "OP_LOCK", |
b591480b BF |
1011 | }, |
1012 | [OP_LOCKT] = { | |
1013 | .op_func = (nfsd4op_func)nfsd4_lockt, | |
b001a1b6 | 1014 | .op_name = "OP_LOCKT", |
b591480b BF |
1015 | }, |
1016 | [OP_LOCKU] = { | |
1017 | .op_func = (nfsd4op_func)nfsd4_locku, | |
b001a1b6 | 1018 | .op_name = "OP_LOCKU", |
b591480b BF |
1019 | }, |
1020 | [OP_LOOKUP] = { | |
1021 | .op_func = (nfsd4op_func)nfsd4_lookup, | |
b001a1b6 | 1022 | .op_name = "OP_LOOKUP", |
b591480b BF |
1023 | }, |
1024 | [OP_LOOKUPP] = { | |
1025 | .op_func = (nfsd4op_func)nfsd4_lookupp, | |
b001a1b6 | 1026 | .op_name = "OP_LOOKUPP", |
b591480b BF |
1027 | }, |
1028 | [OP_NVERIFY] = { | |
1029 | .op_func = (nfsd4op_func)nfsd4_nverify, | |
b001a1b6 | 1030 | .op_name = "OP_NVERIFY", |
b591480b BF |
1031 | }, |
1032 | [OP_OPEN] = { | |
1033 | .op_func = (nfsd4op_func)nfsd4_open, | |
b001a1b6 | 1034 | .op_name = "OP_OPEN", |
b591480b BF |
1035 | }, |
1036 | [OP_OPEN_CONFIRM] = { | |
1037 | .op_func = (nfsd4op_func)nfsd4_open_confirm, | |
b001a1b6 | 1038 | .op_name = "OP_OPEN_CONFIRM", |
b591480b BF |
1039 | }, |
1040 | [OP_OPEN_DOWNGRADE] = { | |
1041 | .op_func = (nfsd4op_func)nfsd4_open_downgrade, | |
b001a1b6 | 1042 | .op_name = "OP_OPEN_DOWNGRADE", |
b591480b BF |
1043 | }, |
1044 | [OP_PUTFH] = { | |
1045 | .op_func = (nfsd4op_func)nfsd4_putfh, | |
27d630ec | 1046 | .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS, |
b001a1b6 | 1047 | .op_name = "OP_PUTFH", |
b591480b | 1048 | }, |
eeac294e | 1049 | [OP_PUTPUBFH] = { |
b001a1b6 | 1050 | /* unsupported, just for future reference: */ |
27d630ec | 1051 | .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS, |
b001a1b6 | 1052 | .op_name = "OP_PUTPUBFH", |
eeac294e | 1053 | }, |
b591480b BF |
1054 | [OP_PUTROOTFH] = { |
1055 | .op_func = (nfsd4op_func)nfsd4_putrootfh, | |
27d630ec | 1056 | .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS, |
b001a1b6 | 1057 | .op_name = "OP_PUTROOTFH", |
b591480b BF |
1058 | }, |
1059 | [OP_READ] = { | |
1060 | .op_func = (nfsd4op_func)nfsd4_read, | |
b001a1b6 | 1061 | .op_name = "OP_READ", |
b591480b BF |
1062 | }, |
1063 | [OP_READDIR] = { | |
1064 | .op_func = (nfsd4op_func)nfsd4_readdir, | |
b001a1b6 | 1065 | .op_name = "OP_READDIR", |
b591480b BF |
1066 | }, |
1067 | [OP_READLINK] = { | |
1068 | .op_func = (nfsd4op_func)nfsd4_readlink, | |
b001a1b6 | 1069 | .op_name = "OP_READLINK", |
b591480b BF |
1070 | }, |
1071 | [OP_REMOVE] = { | |
1072 | .op_func = (nfsd4op_func)nfsd4_remove, | |
b001a1b6 | 1073 | .op_name = "OP_REMOVE", |
b591480b BF |
1074 | }, |
1075 | [OP_RENAME] = { | |
b001a1b6 | 1076 | .op_name = "OP_RENAME", |
b591480b BF |
1077 | .op_func = (nfsd4op_func)nfsd4_rename, |
1078 | }, | |
1079 | [OP_RENEW] = { | |
1080 | .op_func = (nfsd4op_func)nfsd4_renew, | |
27d630ec | 1081 | .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS, |
b001a1b6 | 1082 | .op_name = "OP_RENEW", |
b591480b BF |
1083 | }, |
1084 | [OP_RESTOREFH] = { | |
1085 | .op_func = (nfsd4op_func)nfsd4_restorefh, | |
27d630ec | 1086 | .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS, |
b001a1b6 | 1087 | .op_name = "OP_RESTOREFH", |
b591480b BF |
1088 | }, |
1089 | [OP_SAVEFH] = { | |
1090 | .op_func = (nfsd4op_func)nfsd4_savefh, | |
b001a1b6 | 1091 | .op_name = "OP_SAVEFH", |
b591480b | 1092 | }, |
dcb488a3 AA |
1093 | [OP_SECINFO] = { |
1094 | .op_func = (nfsd4op_func)nfsd4_secinfo, | |
b001a1b6 | 1095 | .op_name = "OP_SECINFO", |
dcb488a3 | 1096 | }, |
b591480b BF |
1097 | [OP_SETATTR] = { |
1098 | .op_func = (nfsd4op_func)nfsd4_setattr, | |
b001a1b6 | 1099 | .op_name = "OP_SETATTR", |
b591480b BF |
1100 | }, |
1101 | [OP_SETCLIENTID] = { | |
1102 | .op_func = (nfsd4op_func)nfsd4_setclientid, | |
27d630ec | 1103 | .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS, |
b001a1b6 | 1104 | .op_name = "OP_SETCLIENTID", |
b591480b BF |
1105 | }, |
1106 | [OP_SETCLIENTID_CONFIRM] = { | |
1107 | .op_func = (nfsd4op_func)nfsd4_setclientid_confirm, | |
27d630ec | 1108 | .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS, |
b001a1b6 | 1109 | .op_name = "OP_SETCLIENTID_CONFIRM", |
b591480b BF |
1110 | }, |
1111 | [OP_VERIFY] = { | |
1112 | .op_func = (nfsd4op_func)nfsd4_verify, | |
b001a1b6 | 1113 | .op_name = "OP_VERIFY", |
b591480b BF |
1114 | }, |
1115 | [OP_WRITE] = { | |
1116 | .op_func = (nfsd4op_func)nfsd4_write, | |
b001a1b6 | 1117 | .op_name = "OP_WRITE", |
b591480b BF |
1118 | }, |
1119 | [OP_RELEASE_LOCKOWNER] = { | |
1120 | .op_func = (nfsd4op_func)nfsd4_release_lockowner, | |
27d630ec | 1121 | .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS, |
b001a1b6 | 1122 | .op_name = "OP_RELEASE_LOCKOWNER", |
b591480b BF |
1123 | }, |
1124 | }; | |
1125 | ||
f1c7f79b | 1126 | static const char *nfsd4_op_name(unsigned opnum) |
b001a1b6 BH |
1127 | { |
1128 | if (opnum < ARRAY_SIZE(nfsd4_ops)) | |
1129 | return nfsd4_ops[opnum].op_name; | |
1130 | return "unknown_operation"; | |
1131 | } | |
1132 | ||
1da177e4 LT |
1133 | #define nfs4svc_decode_voidargs NULL |
1134 | #define nfs4svc_release_void NULL | |
1135 | #define nfsd4_voidres nfsd4_voidargs | |
1136 | #define nfs4svc_release_compound NULL | |
1137 | struct nfsd4_voidargs { int dummy; }; | |
1138 | ||
1139 | #define PROC(name, argt, rest, relt, cache, respsize) \ | |
1140 | { (svc_procfunc) nfsd4_proc_##name, \ | |
1141 | (kxdrproc_t) nfs4svc_decode_##argt##args, \ | |
1142 | (kxdrproc_t) nfs4svc_encode_##rest##res, \ | |
1143 | (kxdrproc_t) nfs4svc_release_##relt, \ | |
1144 | sizeof(struct nfsd4_##argt##args), \ | |
1145 | sizeof(struct nfsd4_##rest##res), \ | |
1146 | 0, \ | |
1147 | cache, \ | |
1148 | respsize, \ | |
1149 | } | |
1150 | ||
1151 | /* | |
1152 | * TODO: At the present time, the NFSv4 server does not do XID caching | |
1153 | * of requests. Implementing XID caching would not be a serious problem, | |
1154 | * although it would require a mild change in interfaces since one | |
1155 | * doesn't know whether an NFSv4 request is idempotent until after the | |
1156 | * XDR decode. However, XID caching totally confuses pynfs (Peter | |
1157 | * Astrand's regression testsuite for NFSv4 servers), which reuses | |
1158 | * XID's liberally, so I've left it unimplemented until pynfs generates | |
1159 | * better XID's. | |
1160 | */ | |
1161 | static struct svc_procedure nfsd_procedures4[2] = { | |
1162 | PROC(null, void, void, void, RC_NOCACHE, 1), | |
7775f4c8 | 1163 | PROC(compound, compound, compound, compound, RC_NOCACHE, NFSD_BUFSIZE/4) |
1da177e4 LT |
1164 | }; |
1165 | ||
1166 | struct svc_version nfsd_version4 = { | |
1167 | .vs_vers = 4, | |
1168 | .vs_nproc = 2, | |
1169 | .vs_proc = nfsd_procedures4, | |
1170 | .vs_dispatch = nfsd_dispatch, | |
1171 | .vs_xdrsize = NFS4_SVC_XDRSIZE, | |
1172 | }; | |
1173 | ||
1174 | /* | |
1175 | * Local variables: | |
1176 | * c-basic-offset: 8 | |
1177 | * End: | |
1178 | */ |