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1da177e4 | 1 | /* |
1da177e4 LT |
2 | * Server-side procedures for NFSv4. |
3 | * | |
4 | * Copyright (c) 2002 The Regents of the University of Michigan. | |
5 | * All rights reserved. | |
6 | * | |
7 | * Kendrick Smith <kmsmith@umich.edu> | |
8 | * Andy Adamson <andros@umich.edu> | |
9 | * | |
10 | * Redistribution and use in source and binary forms, with or without | |
11 | * modification, are permitted provided that the following conditions | |
12 | * are met: | |
13 | * | |
14 | * 1. Redistributions of source code must retain the above copyright | |
15 | * notice, this list of conditions and the following disclaimer. | |
16 | * 2. Redistributions in binary form must reproduce the above copyright | |
17 | * notice, this list of conditions and the following disclaimer in the | |
18 | * documentation and/or other materials provided with the distribution. | |
19 | * 3. Neither the name of the University nor the names of its | |
20 | * contributors may be used to endorse or promote products derived | |
21 | * from this software without specific prior written permission. | |
22 | * | |
23 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED | |
24 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF | |
25 | * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE | |
26 | * DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | |
27 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR | |
28 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF | |
29 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR | |
30 | * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF | |
31 | * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING | |
32 | * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS | |
33 | * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
1da177e4 | 34 | */ |
7e06b7f9 | 35 | #include <linux/file.h> |
5a0e3ad6 | 36 | #include <linux/slab.h> |
1da177e4 | 37 | |
9a74af21 BH |
38 | #include "cache.h" |
39 | #include "xdr4.h" | |
0a3adade | 40 | #include "vfs.h" |
1da177e4 LT |
41 | |
42 | #define NFSDDBG_FACILITY NFSDDBG_PROC | |
43 | ||
3c8e0316 YZ |
44 | static u32 nfsd_attrmask[] = { |
45 | NFSD_WRITEABLE_ATTRS_WORD0, | |
46 | NFSD_WRITEABLE_ATTRS_WORD1, | |
47 | NFSD_WRITEABLE_ATTRS_WORD2 | |
48 | }; | |
49 | ||
50 | static u32 nfsd41_ex_attrmask[] = { | |
51 | NFSD_SUPPATTR_EXCLCREAT_WORD0, | |
52 | NFSD_SUPPATTR_EXCLCREAT_WORD1, | |
53 | NFSD_SUPPATTR_EXCLCREAT_WORD2 | |
54 | }; | |
55 | ||
56 | static __be32 | |
57 | check_attr_support(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, | |
58 | u32 *bmval, u32 *writable) | |
59 | { | |
60 | struct dentry *dentry = cstate->current_fh.fh_dentry; | |
3c8e0316 YZ |
61 | |
62 | /* | |
63 | * Check about attributes are supported by the NFSv4 server or not. | |
64 | * According to spec, unsupported attributes return ERR_ATTRNOTSUPP. | |
65 | */ | |
66 | if ((bmval[0] & ~nfsd_suppattrs0(cstate->minorversion)) || | |
67 | (bmval[1] & ~nfsd_suppattrs1(cstate->minorversion)) || | |
68 | (bmval[2] & ~nfsd_suppattrs2(cstate->minorversion))) | |
69 | return nfserr_attrnotsupp; | |
70 | ||
71 | /* | |
a06b1261 | 72 | * Check FATTR4_WORD0_ACL can be supported |
3c8e0316 YZ |
73 | * in current environment or not. |
74 | */ | |
75 | if (bmval[0] & FATTR4_WORD0_ACL) { | |
76 | if (!IS_POSIXACL(dentry->d_inode)) | |
77 | return nfserr_attrnotsupp; | |
78 | } | |
3c8e0316 YZ |
79 | |
80 | /* | |
81 | * According to spec, read-only attributes return ERR_INVAL. | |
82 | */ | |
83 | if (writable) { | |
84 | if ((bmval[0] & ~writable[0]) || (bmval[1] & ~writable[1]) || | |
85 | (bmval[2] & ~writable[2])) | |
86 | return nfserr_inval; | |
87 | } | |
88 | ||
89 | return nfs_ok; | |
90 | } | |
91 | ||
92 | static __be32 | |
93 | nfsd4_check_open_attributes(struct svc_rqst *rqstp, | |
94 | struct nfsd4_compound_state *cstate, struct nfsd4_open *open) | |
95 | { | |
96 | __be32 status = nfs_ok; | |
97 | ||
98 | if (open->op_create == NFS4_OPEN_CREATE) { | |
99 | if (open->op_createmode == NFS4_CREATE_UNCHECKED | |
100 | || open->op_createmode == NFS4_CREATE_GUARDED) | |
101 | status = check_attr_support(rqstp, cstate, | |
102 | open->op_bmval, nfsd_attrmask); | |
103 | else if (open->op_createmode == NFS4_CREATE_EXCLUSIVE4_1) | |
104 | status = check_attr_support(rqstp, cstate, | |
105 | open->op_bmval, nfsd41_ex_attrmask); | |
106 | } | |
107 | ||
108 | return status; | |
109 | } | |
110 | ||
9208faf2 YZ |
111 | static int |
112 | is_create_with_attrs(struct nfsd4_open *open) | |
113 | { | |
114 | return open->op_create == NFS4_OPEN_CREATE | |
115 | && (open->op_createmode == NFS4_CREATE_UNCHECKED | |
116 | || open->op_createmode == NFS4_CREATE_GUARDED | |
117 | || open->op_createmode == NFS4_CREATE_EXCLUSIVE4_1); | |
118 | } | |
119 | ||
120 | /* | |
121 | * if error occurs when setting the acl, just clear the acl bit | |
122 | * in the returned attr bitmap. | |
123 | */ | |
124 | static void | |
125 | do_set_nfs4_acl(struct svc_rqst *rqstp, struct svc_fh *fhp, | |
126 | struct nfs4_acl *acl, u32 *bmval) | |
127 | { | |
128 | __be32 status; | |
129 | ||
130 | status = nfsd4_set_nfs4_acl(rqstp, fhp, acl); | |
131 | if (status) | |
132 | /* | |
133 | * We should probably fail the whole open at this point, | |
134 | * but we've already created the file, so it's too late; | |
135 | * So this seems the least of evils: | |
136 | */ | |
137 | bmval[0] &= ~FATTR4_WORD0_ACL; | |
138 | } | |
139 | ||
1da177e4 LT |
140 | static inline void |
141 | fh_dup2(struct svc_fh *dst, struct svc_fh *src) | |
142 | { | |
143 | fh_put(dst); | |
144 | dget(src->fh_dentry); | |
145 | if (src->fh_export) | |
146 | cache_get(&src->fh_export->h); | |
147 | *dst = *src; | |
148 | } | |
149 | ||
b37ad28b | 150 | static __be32 |
dc730e17 | 151 | do_open_permission(struct svc_rqst *rqstp, struct svc_fh *current_fh, struct nfsd4_open *open, int accmode) |
1da177e4 | 152 | { |
b37ad28b | 153 | __be32 status; |
1da177e4 LT |
154 | |
155 | if (open->op_truncate && | |
156 | !(open->op_share_access & NFS4_SHARE_ACCESS_WRITE)) | |
157 | return nfserr_inval; | |
158 | ||
1da177e4 | 159 | if (open->op_share_access & NFS4_SHARE_ACCESS_READ) |
8837abca | 160 | accmode |= NFSD_MAY_READ; |
9801d8a3 | 161 | if (open->op_share_access & NFS4_SHARE_ACCESS_WRITE) |
8837abca | 162 | accmode |= (NFSD_MAY_WRITE | NFSD_MAY_TRUNC); |
57ecb34f | 163 | if (open->op_share_deny & NFS4_SHARE_DENY_READ) |
8837abca | 164 | accmode |= NFSD_MAY_WRITE; |
1da177e4 LT |
165 | |
166 | status = fh_verify(rqstp, current_fh, S_IFREG, accmode); | |
167 | ||
168 | return status; | |
169 | } | |
170 | ||
b37ad28b | 171 | static __be32 |
1da177e4 LT |
172 | do_open_lookup(struct svc_rqst *rqstp, struct svc_fh *current_fh, struct nfsd4_open *open) |
173 | { | |
174 | struct svc_fh resfh; | |
b37ad28b | 175 | __be32 status; |
81ac95c5 | 176 | int created = 0; |
1da177e4 LT |
177 | |
178 | fh_init(&resfh, NFS4_FHSIZE); | |
179 | open->op_truncate = 0; | |
180 | ||
181 | if (open->op_create) { | |
79fb54ab BH |
182 | /* FIXME: check session persistence and pnfs flags. |
183 | * The nfsv4.1 spec requires the following semantics: | |
184 | * | |
185 | * Persistent | pNFS | Server REQUIRED | Client Allowed | |
186 | * Reply Cache | server | | | |
187 | * -------------+--------+-----------------+-------------------- | |
188 | * no | no | EXCLUSIVE4_1 | EXCLUSIVE4_1 | |
189 | * | | | (SHOULD) | |
190 | * | | and EXCLUSIVE4 | or EXCLUSIVE4 | |
191 | * | | | (SHOULD NOT) | |
192 | * no | yes | EXCLUSIVE4_1 | EXCLUSIVE4_1 | |
193 | * yes | no | GUARDED4 | GUARDED4 | |
194 | * yes | yes | GUARDED4 | GUARDED4 | |
195 | */ | |
196 | ||
1da177e4 LT |
197 | /* |
198 | * Note: create modes (UNCHECKED,GUARDED...) are the same | |
ac6721a1 | 199 | * in NFSv4 as in v3 except EXCLUSIVE4_1. |
1da177e4 | 200 | */ |
ac6721a1 | 201 | status = do_nfsd_create(rqstp, current_fh, open->op_fname.data, |
1da177e4 LT |
202 | open->op_fname.len, &open->op_iattr, |
203 | &resfh, open->op_createmode, | |
749997e5 JL |
204 | (u32 *)open->op_verf.data, |
205 | &open->op_truncate, &created); | |
206 | ||
99f88726 BF |
207 | /* |
208 | * Following rfc 3530 14.2.16, use the returned bitmask | |
209 | * to indicate which attributes we used to store the | |
210 | * verifier: | |
749997e5 JL |
211 | */ |
212 | if (open->op_createmode == NFS4_CREATE_EXCLUSIVE && status == 0) | |
99f88726 | 213 | open->op_bmval[1] = (FATTR4_WORD1_TIME_ACCESS | |
749997e5 | 214 | FATTR4_WORD1_TIME_MODIFY); |
af85852d | 215 | } else { |
1da177e4 LT |
216 | status = nfsd_lookup(rqstp, current_fh, |
217 | open->op_fname.data, open->op_fname.len, &resfh); | |
218 | fh_unlock(current_fh); | |
219 | } | |
af85852d BF |
220 | if (status) |
221 | goto out; | |
1da177e4 | 222 | |
9208faf2 YZ |
223 | if (is_create_with_attrs(open) && open->op_acl != NULL) |
224 | do_set_nfs4_acl(rqstp, &resfh, open->op_acl, open->op_bmval); | |
225 | ||
af85852d | 226 | set_change_info(&open->op_cinfo, current_fh); |
13024b7b | 227 | fh_dup2(current_fh, &resfh); |
1da177e4 | 228 | |
af85852d | 229 | /* set reply cache */ |
a4773c08 BF |
230 | fh_copy_shallow(&open->op_stateowner->so_replay.rp_openfh, |
231 | &resfh.fh_handle); | |
81ac95c5 | 232 | if (!created) |
8837abca MS |
233 | status = do_open_permission(rqstp, current_fh, open, |
234 | NFSD_MAY_NOP); | |
1da177e4 | 235 | |
af85852d | 236 | out: |
1da177e4 LT |
237 | fh_put(&resfh); |
238 | return status; | |
239 | } | |
240 | ||
b37ad28b | 241 | static __be32 |
1da177e4 LT |
242 | do_open_fhandle(struct svc_rqst *rqstp, struct svc_fh *current_fh, struct nfsd4_open *open) |
243 | { | |
b37ad28b | 244 | __be32 status; |
1da177e4 LT |
245 | |
246 | /* Only reclaims from previously confirmed clients are valid */ | |
247 | if ((status = nfs4_check_open_reclaim(&open->op_clientid))) | |
248 | return status; | |
249 | ||
250 | /* We don't know the target directory, and therefore can not | |
251 | * set the change info | |
252 | */ | |
253 | ||
254 | memset(&open->op_cinfo, 0, sizeof(struct nfsd4_change_info)); | |
255 | ||
256 | /* set replay cache */ | |
a4773c08 BF |
257 | fh_copy_shallow(&open->op_stateowner->so_replay.rp_openfh, |
258 | ¤t_fh->fh_handle); | |
1da177e4 LT |
259 | |
260 | open->op_truncate = (open->op_iattr.ia_valid & ATTR_SIZE) && | |
261 | (open->op_iattr.ia_size == 0); | |
262 | ||
8837abca MS |
263 | status = do_open_permission(rqstp, current_fh, open, |
264 | NFSD_MAY_OWNER_OVERRIDE); | |
1da177e4 LT |
265 | |
266 | return status; | |
267 | } | |
268 | ||
60adfc50 AA |
269 | static void |
270 | copy_clientid(clientid_t *clid, struct nfsd4_session *session) | |
271 | { | |
272 | struct nfsd4_sessionid *sid = | |
273 | (struct nfsd4_sessionid *)session->se_sessionid.data; | |
274 | ||
275 | clid->cl_boot = sid->clientid.cl_boot; | |
276 | clid->cl_id = sid->clientid.cl_id; | |
277 | } | |
1da177e4 | 278 | |
7191155b | 279 | static __be32 |
ca364317 | 280 | nfsd4_open(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
a4f1706a | 281 | struct nfsd4_open *open) |
1da177e4 | 282 | { |
b37ad28b | 283 | __be32 status; |
6668958f AA |
284 | struct nfsd4_compoundres *resp; |
285 | ||
1da177e4 LT |
286 | dprintk("NFSD: nfsd4_open filename %.*s op_stateowner %p\n", |
287 | (int)open->op_fname.len, open->op_fname.data, | |
288 | open->op_stateowner); | |
289 | ||
1da177e4 LT |
290 | /* This check required by spec. */ |
291 | if (open->op_create && open->op_claim_type != NFS4_OPEN_CLAIM_NULL) | |
292 | return nfserr_inval; | |
293 | ||
60adfc50 AA |
294 | if (nfsd4_has_session(cstate)) |
295 | copy_clientid(&open->op_clientid, cstate->session); | |
296 | ||
1da177e4 LT |
297 | nfs4_lock_state(); |
298 | ||
299 | /* check seqid for replay. set nfs4_owner */ | |
6668958f AA |
300 | resp = rqstp->rq_resp; |
301 | status = nfsd4_process_open1(&resp->cstate, open); | |
a90b061c | 302 | if (status == nfserr_replay_me) { |
1da177e4 | 303 | struct nfs4_replay *rp = &open->op_stateowner->so_replay; |
ca364317 | 304 | fh_put(&cstate->current_fh); |
a4773c08 BF |
305 | fh_copy_shallow(&cstate->current_fh.fh_handle, |
306 | &rp->rp_openfh); | |
8837abca | 307 | status = fh_verify(rqstp, &cstate->current_fh, 0, NFSD_MAY_NOP); |
1da177e4 LT |
308 | if (status) |
309 | dprintk("nfsd4_open: replay failed" | |
310 | " restoring previous filehandle\n"); | |
311 | else | |
a90b061c | 312 | status = nfserr_replay_me; |
1da177e4 LT |
313 | } |
314 | if (status) | |
315 | goto out; | |
fb553c0f | 316 | |
3c8e0316 YZ |
317 | status = nfsd4_check_open_attributes(rqstp, cstate, open); |
318 | if (status) | |
319 | goto out; | |
320 | ||
fb553c0f BF |
321 | /* Openowner is now set, so sequence id will get bumped. Now we need |
322 | * these checks before we do any creates: */ | |
cbd0d51a | 323 | status = nfserr_grace; |
af558e33 | 324 | if (locks_in_grace() && open->op_claim_type != NFS4_OPEN_CLAIM_PREVIOUS) |
cbd0d51a BF |
325 | goto out; |
326 | status = nfserr_no_grace; | |
af558e33 | 327 | if (!locks_in_grace() && open->op_claim_type == NFS4_OPEN_CLAIM_PREVIOUS) |
cbd0d51a | 328 | goto out; |
fb553c0f | 329 | |
1da177e4 | 330 | switch (open->op_claim_type) { |
0dd3c192 | 331 | case NFS4_OPEN_CLAIM_DELEGATE_CUR: |
1da177e4 LT |
332 | case NFS4_OPEN_CLAIM_NULL: |
333 | /* | |
334 | * (1) set CURRENT_FH to the file being opened, | |
335 | * creating it if necessary, (2) set open->op_cinfo, | |
336 | * (3) set open->op_truncate if the file is to be | |
337 | * truncated after opening, (4) do permission checking. | |
338 | */ | |
ca364317 BF |
339 | status = do_open_lookup(rqstp, &cstate->current_fh, |
340 | open); | |
1da177e4 LT |
341 | if (status) |
342 | goto out; | |
343 | break; | |
344 | case NFS4_OPEN_CLAIM_PREVIOUS: | |
a525825d | 345 | open->op_stateowner->so_confirmed = 1; |
1da177e4 LT |
346 | /* |
347 | * The CURRENT_FH is already set to the file being | |
348 | * opened. (1) set open->op_cinfo, (2) set | |
349 | * open->op_truncate if the file is to be truncated | |
350 | * after opening, (3) do permission checking. | |
351 | */ | |
ca364317 BF |
352 | status = do_open_fhandle(rqstp, &cstate->current_fh, |
353 | open); | |
1da177e4 LT |
354 | if (status) |
355 | goto out; | |
356 | break; | |
1da177e4 | 357 | case NFS4_OPEN_CLAIM_DELEGATE_PREV: |
a525825d | 358 | open->op_stateowner->so_confirmed = 1; |
2fdada03 | 359 | dprintk("NFSD: unsupported OPEN claim type %d\n", |
1da177e4 LT |
360 | open->op_claim_type); |
361 | status = nfserr_notsupp; | |
362 | goto out; | |
363 | default: | |
2fdada03 | 364 | dprintk("NFSD: Invalid OPEN claim type %d\n", |
1da177e4 LT |
365 | open->op_claim_type); |
366 | status = nfserr_inval; | |
367 | goto out; | |
368 | } | |
369 | /* | |
370 | * nfsd4_process_open2() does the actual opening of the file. If | |
371 | * successful, it (1) truncates the file if open->op_truncate was | |
372 | * set, (2) sets open->op_stateid, (3) sets open->op_delegation. | |
373 | */ | |
ca364317 | 374 | status = nfsd4_process_open2(rqstp, &cstate->current_fh, open); |
1da177e4 | 375 | out: |
f2327d9a | 376 | if (open->op_stateowner) { |
1da177e4 | 377 | nfs4_get_stateowner(open->op_stateowner); |
a4f1706a | 378 | cstate->replay_owner = open->op_stateowner; |
f2327d9a | 379 | } |
1da177e4 LT |
380 | nfs4_unlock_state(); |
381 | return status; | |
382 | } | |
383 | ||
384 | /* | |
385 | * filehandle-manipulating ops. | |
386 | */ | |
7191155b | 387 | static __be32 |
b591480b BF |
388 | nfsd4_getfh(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
389 | struct svc_fh **getfh) | |
1da177e4 | 390 | { |
ca364317 | 391 | if (!cstate->current_fh.fh_dentry) |
1da177e4 LT |
392 | return nfserr_nofilehandle; |
393 | ||
ca364317 | 394 | *getfh = &cstate->current_fh; |
1da177e4 LT |
395 | return nfs_ok; |
396 | } | |
397 | ||
7191155b | 398 | static __be32 |
ca364317 BF |
399 | nfsd4_putfh(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
400 | struct nfsd4_putfh *putfh) | |
1da177e4 | 401 | { |
ca364317 BF |
402 | fh_put(&cstate->current_fh); |
403 | cstate->current_fh.fh_handle.fh_size = putfh->pf_fhlen; | |
404 | memcpy(&cstate->current_fh.fh_handle.fh_base, putfh->pf_fhval, | |
405 | putfh->pf_fhlen); | |
68d93184 | 406 | return fh_verify(rqstp, &cstate->current_fh, 0, NFSD_MAY_BYPASS_GSS); |
1da177e4 LT |
407 | } |
408 | ||
7191155b | 409 | static __be32 |
b591480b BF |
410 | nfsd4_putrootfh(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
411 | void *arg) | |
1da177e4 | 412 | { |
b37ad28b | 413 | __be32 status; |
1da177e4 | 414 | |
ca364317 | 415 | fh_put(&cstate->current_fh); |
df547efb | 416 | status = exp_pseudoroot(rqstp, &cstate->current_fh); |
1da177e4 LT |
417 | return status; |
418 | } | |
419 | ||
7191155b | 420 | static __be32 |
b591480b BF |
421 | nfsd4_restorefh(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
422 | void *arg) | |
1da177e4 | 423 | { |
ca364317 | 424 | if (!cstate->save_fh.fh_dentry) |
1da177e4 LT |
425 | return nfserr_restorefh; |
426 | ||
ca364317 | 427 | fh_dup2(&cstate->current_fh, &cstate->save_fh); |
1da177e4 LT |
428 | return nfs_ok; |
429 | } | |
430 | ||
7191155b | 431 | static __be32 |
b591480b BF |
432 | nfsd4_savefh(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
433 | void *arg) | |
1da177e4 | 434 | { |
ca364317 | 435 | if (!cstate->current_fh.fh_dentry) |
1da177e4 LT |
436 | return nfserr_nofilehandle; |
437 | ||
ca364317 | 438 | fh_dup2(&cstate->save_fh, &cstate->current_fh); |
1da177e4 LT |
439 | return nfs_ok; |
440 | } | |
441 | ||
442 | /* | |
443 | * misc nfsv4 ops | |
444 | */ | |
7191155b | 445 | static __be32 |
ca364317 BF |
446 | nfsd4_access(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
447 | struct nfsd4_access *access) | |
1da177e4 LT |
448 | { |
449 | if (access->ac_req_access & ~NFS3_ACCESS_FULL) | |
450 | return nfserr_inval; | |
451 | ||
452 | access->ac_resp_access = access->ac_req_access; | |
ca364317 BF |
453 | return nfsd_access(rqstp, &cstate->current_fh, &access->ac_resp_access, |
454 | &access->ac_supported); | |
1da177e4 LT |
455 | } |
456 | ||
7191155b | 457 | static __be32 |
ca364317 BF |
458 | nfsd4_commit(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
459 | struct nfsd4_commit *commit) | |
1da177e4 | 460 | { |
b37ad28b | 461 | __be32 status; |
1da177e4 LT |
462 | |
463 | u32 *p = (u32 *)commit->co_verf.data; | |
464 | *p++ = nfssvc_boot.tv_sec; | |
465 | *p++ = nfssvc_boot.tv_usec; | |
466 | ||
ca364317 BF |
467 | status = nfsd_commit(rqstp, &cstate->current_fh, commit->co_offset, |
468 | commit->co_count); | |
1da177e4 LT |
469 | if (status == nfserr_symlink) |
470 | status = nfserr_inval; | |
471 | return status; | |
472 | } | |
473 | ||
b37ad28b | 474 | static __be32 |
ca364317 BF |
475 | nfsd4_create(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
476 | struct nfsd4_create *create) | |
1da177e4 LT |
477 | { |
478 | struct svc_fh resfh; | |
b37ad28b | 479 | __be32 status; |
1da177e4 LT |
480 | dev_t rdev; |
481 | ||
482 | fh_init(&resfh, NFS4_FHSIZE); | |
483 | ||
8837abca MS |
484 | status = fh_verify(rqstp, &cstate->current_fh, S_IFDIR, |
485 | NFSD_MAY_CREATE); | |
1da177e4 LT |
486 | if (status == nfserr_symlink) |
487 | status = nfserr_notdir; | |
488 | if (status) | |
489 | return status; | |
490 | ||
3c8e0316 YZ |
491 | status = check_attr_support(rqstp, cstate, create->cr_bmval, |
492 | nfsd_attrmask); | |
493 | if (status) | |
494 | return status; | |
495 | ||
1da177e4 LT |
496 | switch (create->cr_type) { |
497 | case NF4LNK: | |
498 | /* ugh! we have to null-terminate the linktext, or | |
499 | * vfs_symlink() will choke. it is always safe to | |
500 | * null-terminate by brute force, since at worst we | |
501 | * will overwrite the first byte of the create namelen | |
502 | * in the XDR buffer, which has already been extracted | |
503 | * during XDR decode. | |
504 | */ | |
505 | create->cr_linkname[create->cr_linklen] = 0; | |
506 | ||
ca364317 BF |
507 | status = nfsd_symlink(rqstp, &cstate->current_fh, |
508 | create->cr_name, create->cr_namelen, | |
509 | create->cr_linkname, create->cr_linklen, | |
510 | &resfh, &create->cr_iattr); | |
1da177e4 LT |
511 | break; |
512 | ||
513 | case NF4BLK: | |
514 | rdev = MKDEV(create->cr_specdata1, create->cr_specdata2); | |
515 | if (MAJOR(rdev) != create->cr_specdata1 || | |
516 | MINOR(rdev) != create->cr_specdata2) | |
517 | return nfserr_inval; | |
ca364317 BF |
518 | status = nfsd_create(rqstp, &cstate->current_fh, |
519 | create->cr_name, create->cr_namelen, | |
520 | &create->cr_iattr, S_IFBLK, rdev, &resfh); | |
1da177e4 LT |
521 | break; |
522 | ||
523 | case NF4CHR: | |
524 | rdev = MKDEV(create->cr_specdata1, create->cr_specdata2); | |
525 | if (MAJOR(rdev) != create->cr_specdata1 || | |
526 | MINOR(rdev) != create->cr_specdata2) | |
527 | return nfserr_inval; | |
ca364317 BF |
528 | status = nfsd_create(rqstp, &cstate->current_fh, |
529 | create->cr_name, create->cr_namelen, | |
530 | &create->cr_iattr,S_IFCHR, rdev, &resfh); | |
1da177e4 LT |
531 | break; |
532 | ||
533 | case NF4SOCK: | |
ca364317 BF |
534 | status = nfsd_create(rqstp, &cstate->current_fh, |
535 | create->cr_name, create->cr_namelen, | |
536 | &create->cr_iattr, S_IFSOCK, 0, &resfh); | |
1da177e4 LT |
537 | break; |
538 | ||
539 | case NF4FIFO: | |
ca364317 BF |
540 | status = nfsd_create(rqstp, &cstate->current_fh, |
541 | create->cr_name, create->cr_namelen, | |
542 | &create->cr_iattr, S_IFIFO, 0, &resfh); | |
1da177e4 LT |
543 | break; |
544 | ||
545 | case NF4DIR: | |
546 | create->cr_iattr.ia_valid &= ~ATTR_SIZE; | |
ca364317 BF |
547 | status = nfsd_create(rqstp, &cstate->current_fh, |
548 | create->cr_name, create->cr_namelen, | |
549 | &create->cr_iattr, S_IFDIR, 0, &resfh); | |
1da177e4 LT |
550 | break; |
551 | ||
552 | default: | |
553 | status = nfserr_badtype; | |
554 | } | |
555 | ||
9208faf2 YZ |
556 | if (status) |
557 | goto out; | |
1da177e4 | 558 | |
9208faf2 YZ |
559 | if (create->cr_acl != NULL) |
560 | do_set_nfs4_acl(rqstp, &resfh, create->cr_acl, | |
561 | create->cr_bmval); | |
562 | ||
563 | fh_unlock(&cstate->current_fh); | |
564 | set_change_info(&create->cr_cinfo, &cstate->current_fh); | |
565 | fh_dup2(&cstate->current_fh, &resfh); | |
566 | out: | |
1da177e4 LT |
567 | fh_put(&resfh); |
568 | return status; | |
569 | } | |
570 | ||
7191155b | 571 | static __be32 |
ca364317 BF |
572 | nfsd4_getattr(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
573 | struct nfsd4_getattr *getattr) | |
1da177e4 | 574 | { |
b37ad28b | 575 | __be32 status; |
1da177e4 | 576 | |
8837abca | 577 | status = fh_verify(rqstp, &cstate->current_fh, 0, NFSD_MAY_NOP); |
1da177e4 LT |
578 | if (status) |
579 | return status; | |
580 | ||
581 | if (getattr->ga_bmval[1] & NFSD_WRITEONLY_ATTRS_WORD1) | |
582 | return nfserr_inval; | |
583 | ||
7e705706 AA |
584 | getattr->ga_bmval[0] &= nfsd_suppattrs0(cstate->minorversion); |
585 | getattr->ga_bmval[1] &= nfsd_suppattrs1(cstate->minorversion); | |
586 | getattr->ga_bmval[2] &= nfsd_suppattrs2(cstate->minorversion); | |
1da177e4 | 587 | |
ca364317 | 588 | getattr->ga_fhp = &cstate->current_fh; |
1da177e4 LT |
589 | return nfs_ok; |
590 | } | |
591 | ||
7191155b | 592 | static __be32 |
ca364317 BF |
593 | nfsd4_link(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
594 | struct nfsd4_link *link) | |
1da177e4 | 595 | { |
b37ad28b | 596 | __be32 status = nfserr_nofilehandle; |
1da177e4 | 597 | |
ca364317 | 598 | if (!cstate->save_fh.fh_dentry) |
1da177e4 | 599 | return status; |
ca364317 BF |
600 | status = nfsd_link(rqstp, &cstate->current_fh, |
601 | link->li_name, link->li_namelen, &cstate->save_fh); | |
1da177e4 | 602 | if (!status) |
ca364317 | 603 | set_change_info(&link->li_cinfo, &cstate->current_fh); |
1da177e4 LT |
604 | return status; |
605 | } | |
606 | ||
0ff7ab46 | 607 | static __be32 nfsd4_do_lookupp(struct svc_rqst *rqstp, struct svc_fh *fh) |
1da177e4 LT |
608 | { |
609 | struct svc_fh tmp_fh; | |
b37ad28b | 610 | __be32 ret; |
1da177e4 LT |
611 | |
612 | fh_init(&tmp_fh, NFS4_FHSIZE); | |
df547efb BF |
613 | ret = exp_pseudoroot(rqstp, &tmp_fh); |
614 | if (ret) | |
1da177e4 | 615 | return ret; |
0ff7ab46 | 616 | if (tmp_fh.fh_dentry == fh->fh_dentry) { |
1da177e4 LT |
617 | fh_put(&tmp_fh); |
618 | return nfserr_noent; | |
619 | } | |
620 | fh_put(&tmp_fh); | |
0ff7ab46 BF |
621 | return nfsd_lookup(rqstp, fh, "..", 2, fh); |
622 | } | |
623 | ||
624 | static __be32 | |
625 | nfsd4_lookupp(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, | |
626 | void *arg) | |
627 | { | |
628 | return nfsd4_do_lookupp(rqstp, &cstate->current_fh); | |
1da177e4 LT |
629 | } |
630 | ||
7191155b | 631 | static __be32 |
ca364317 BF |
632 | nfsd4_lookup(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
633 | struct nfsd4_lookup *lookup) | |
1da177e4 | 634 | { |
ca364317 BF |
635 | return nfsd_lookup(rqstp, &cstate->current_fh, |
636 | lookup->lo_name, lookup->lo_len, | |
637 | &cstate->current_fh); | |
1da177e4 LT |
638 | } |
639 | ||
7191155b | 640 | static __be32 |
ca364317 BF |
641 | nfsd4_read(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
642 | struct nfsd4_read *read) | |
1da177e4 | 643 | { |
b37ad28b | 644 | __be32 status; |
1da177e4 LT |
645 | |
646 | /* no need to check permission - this will be done in nfsd_read() */ | |
647 | ||
7e06b7f9 | 648 | read->rd_filp = NULL; |
1da177e4 LT |
649 | if (read->rd_offset >= OFFSET_MAX) |
650 | return nfserr_inval; | |
651 | ||
652 | nfs4_lock_state(); | |
653 | /* check stateid */ | |
dd453dfd BH |
654 | if ((status = nfs4_preprocess_stateid_op(cstate, &read->rd_stateid, |
655 | RD_STATE, &read->rd_filp))) { | |
1da177e4 LT |
656 | dprintk("NFSD: nfsd4_read: couldn't process stateid!\n"); |
657 | goto out; | |
658 | } | |
7e06b7f9 N |
659 | if (read->rd_filp) |
660 | get_file(read->rd_filp); | |
1da177e4 LT |
661 | status = nfs_ok; |
662 | out: | |
663 | nfs4_unlock_state(); | |
664 | read->rd_rqstp = rqstp; | |
ca364317 | 665 | read->rd_fhp = &cstate->current_fh; |
1da177e4 LT |
666 | return status; |
667 | } | |
668 | ||
7191155b | 669 | static __be32 |
ca364317 BF |
670 | nfsd4_readdir(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
671 | struct nfsd4_readdir *readdir) | |
1da177e4 LT |
672 | { |
673 | u64 cookie = readdir->rd_cookie; | |
674 | static const nfs4_verifier zeroverf; | |
675 | ||
676 | /* no need to check permission - this will be done in nfsd_readdir() */ | |
677 | ||
678 | if (readdir->rd_bmval[1] & NFSD_WRITEONLY_ATTRS_WORD1) | |
679 | return nfserr_inval; | |
680 | ||
7e705706 AA |
681 | readdir->rd_bmval[0] &= nfsd_suppattrs0(cstate->minorversion); |
682 | readdir->rd_bmval[1] &= nfsd_suppattrs1(cstate->minorversion); | |
683 | readdir->rd_bmval[2] &= nfsd_suppattrs2(cstate->minorversion); | |
1da177e4 LT |
684 | |
685 | if ((cookie > ~(u32)0) || (cookie == 1) || (cookie == 2) || | |
686 | (cookie == 0 && memcmp(readdir->rd_verf.data, zeroverf.data, NFS4_VERIFIER_SIZE))) | |
687 | return nfserr_bad_cookie; | |
688 | ||
689 | readdir->rd_rqstp = rqstp; | |
ca364317 | 690 | readdir->rd_fhp = &cstate->current_fh; |
1da177e4 LT |
691 | return nfs_ok; |
692 | } | |
693 | ||
7191155b | 694 | static __be32 |
ca364317 BF |
695 | nfsd4_readlink(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
696 | struct nfsd4_readlink *readlink) | |
1da177e4 LT |
697 | { |
698 | readlink->rl_rqstp = rqstp; | |
ca364317 | 699 | readlink->rl_fhp = &cstate->current_fh; |
1da177e4 LT |
700 | return nfs_ok; |
701 | } | |
702 | ||
7191155b | 703 | static __be32 |
ca364317 BF |
704 | nfsd4_remove(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
705 | struct nfsd4_remove *remove) | |
1da177e4 | 706 | { |
b37ad28b | 707 | __be32 status; |
1da177e4 | 708 | |
af558e33 | 709 | if (locks_in_grace()) |
c815afc7 | 710 | return nfserr_grace; |
ca364317 BF |
711 | status = nfsd_unlink(rqstp, &cstate->current_fh, 0, |
712 | remove->rm_name, remove->rm_namelen); | |
1da177e4 LT |
713 | if (status == nfserr_symlink) |
714 | return nfserr_notdir; | |
715 | if (!status) { | |
ca364317 BF |
716 | fh_unlock(&cstate->current_fh); |
717 | set_change_info(&remove->rm_cinfo, &cstate->current_fh); | |
1da177e4 LT |
718 | } |
719 | return status; | |
720 | } | |
721 | ||
7191155b | 722 | static __be32 |
ca364317 BF |
723 | nfsd4_rename(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
724 | struct nfsd4_rename *rename) | |
1da177e4 | 725 | { |
b37ad28b | 726 | __be32 status = nfserr_nofilehandle; |
1da177e4 | 727 | |
ca364317 | 728 | if (!cstate->save_fh.fh_dentry) |
1da177e4 | 729 | return status; |
af558e33 | 730 | if (locks_in_grace() && !(cstate->save_fh.fh_export->ex_flags |
c815afc7 N |
731 | & NFSEXP_NOSUBTREECHECK)) |
732 | return nfserr_grace; | |
ca364317 BF |
733 | status = nfsd_rename(rqstp, &cstate->save_fh, rename->rn_sname, |
734 | rename->rn_snamelen, &cstate->current_fh, | |
1da177e4 LT |
735 | rename->rn_tname, rename->rn_tnamelen); |
736 | ||
737 | /* the underlying filesystem returns different error's than required | |
738 | * by NFSv4. both save_fh and current_fh have been verified.. */ | |
739 | if (status == nfserr_isdir) | |
740 | status = nfserr_exist; | |
741 | else if ((status == nfserr_notdir) && | |
ca364317 BF |
742 | (S_ISDIR(cstate->save_fh.fh_dentry->d_inode->i_mode) && |
743 | S_ISDIR(cstate->current_fh.fh_dentry->d_inode->i_mode))) | |
1da177e4 LT |
744 | status = nfserr_exist; |
745 | else if (status == nfserr_symlink) | |
746 | status = nfserr_notdir; | |
747 | ||
748 | if (!status) { | |
ca364317 BF |
749 | set_change_info(&rename->rn_sinfo, &cstate->current_fh); |
750 | set_change_info(&rename->rn_tinfo, &cstate->save_fh); | |
1da177e4 LT |
751 | } |
752 | return status; | |
753 | } | |
754 | ||
dcb488a3 AA |
755 | static __be32 |
756 | nfsd4_secinfo(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, | |
757 | struct nfsd4_secinfo *secinfo) | |
758 | { | |
759 | struct svc_fh resfh; | |
760 | struct svc_export *exp; | |
761 | struct dentry *dentry; | |
762 | __be32 err; | |
763 | ||
764 | fh_init(&resfh, NFS4_FHSIZE); | |
29a78a3e BF |
765 | err = fh_verify(rqstp, &cstate->current_fh, S_IFDIR, NFSD_MAY_EXEC); |
766 | if (err) | |
767 | return err; | |
dcb488a3 AA |
768 | err = nfsd_lookup_dentry(rqstp, &cstate->current_fh, |
769 | secinfo->si_name, secinfo->si_namelen, | |
770 | &exp, &dentry); | |
771 | if (err) | |
772 | return err; | |
773 | if (dentry->d_inode == NULL) { | |
774 | exp_put(exp); | |
775 | err = nfserr_noent; | |
776 | } else | |
777 | secinfo->si_exp = exp; | |
778 | dput(dentry); | |
56560b9a BF |
779 | if (cstate->minorversion) |
780 | /* See rfc 5661 section 2.6.3.1.1.8 */ | |
781 | fh_put(&cstate->current_fh); | |
dcb488a3 AA |
782 | return err; |
783 | } | |
784 | ||
04f4ad16 BF |
785 | static __be32 |
786 | nfsd4_secinfo_no_name(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, | |
787 | struct nfsd4_secinfo_no_name *sin) | |
788 | { | |
789 | __be32 err; | |
790 | ||
791 | switch (sin->sin_style) { | |
792 | case NFS4_SECINFO_STYLE4_CURRENT_FH: | |
793 | break; | |
794 | case NFS4_SECINFO_STYLE4_PARENT: | |
795 | err = nfsd4_do_lookupp(rqstp, &cstate->current_fh); | |
796 | if (err) | |
797 | return err; | |
798 | break; | |
799 | default: | |
800 | return nfserr_inval; | |
801 | } | |
802 | exp_get(cstate->current_fh.fh_export); | |
803 | sin->sin_exp = cstate->current_fh.fh_export; | |
804 | fh_put(&cstate->current_fh); | |
805 | return nfs_ok; | |
806 | } | |
807 | ||
7191155b | 808 | static __be32 |
ca364317 BF |
809 | nfsd4_setattr(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
810 | struct nfsd4_setattr *setattr) | |
1da177e4 | 811 | { |
b37ad28b | 812 | __be32 status = nfs_ok; |
1da177e4 | 813 | |
1da177e4 LT |
814 | if (setattr->sa_iattr.ia_valid & ATTR_SIZE) { |
815 | nfs4_lock_state(); | |
dd453dfd | 816 | status = nfs4_preprocess_stateid_op(cstate, |
6150ef0d | 817 | &setattr->sa_stateid, WR_STATE, NULL); |
1da177e4 | 818 | nfs4_unlock_state(); |
375c5547 | 819 | if (status) { |
3e3b4800 | 820 | dprintk("NFSD: nfsd4_setattr: couldn't process stateid!\n"); |
375c5547 BF |
821 | return status; |
822 | } | |
1da177e4 | 823 | } |
18f335af DH |
824 | status = mnt_want_write(cstate->current_fh.fh_export->ex_path.mnt); |
825 | if (status) | |
826 | return status; | |
1da177e4 | 827 | status = nfs_ok; |
3c8e0316 YZ |
828 | |
829 | status = check_attr_support(rqstp, cstate, setattr->sa_bmval, | |
830 | nfsd_attrmask); | |
831 | if (status) | |
832 | goto out; | |
833 | ||
1da177e4 | 834 | if (setattr->sa_acl != NULL) |
ca364317 BF |
835 | status = nfsd4_set_nfs4_acl(rqstp, &cstate->current_fh, |
836 | setattr->sa_acl); | |
1da177e4 | 837 | if (status) |
18f335af | 838 | goto out; |
ca364317 | 839 | status = nfsd_setattr(rqstp, &cstate->current_fh, &setattr->sa_iattr, |
1da177e4 | 840 | 0, (time_t)0); |
18f335af DH |
841 | out: |
842 | mnt_drop_write(cstate->current_fh.fh_export->ex_path.mnt); | |
1da177e4 LT |
843 | return status; |
844 | } | |
845 | ||
7191155b | 846 | static __be32 |
ca364317 BF |
847 | nfsd4_write(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
848 | struct nfsd4_write *write) | |
1da177e4 LT |
849 | { |
850 | stateid_t *stateid = &write->wr_stateid; | |
851 | struct file *filp = NULL; | |
852 | u32 *p; | |
b37ad28b | 853 | __be32 status = nfs_ok; |
31dec253 | 854 | unsigned long cnt; |
1da177e4 LT |
855 | |
856 | /* no need to check permission - this will be done in nfsd_write() */ | |
857 | ||
858 | if (write->wr_offset >= OFFSET_MAX) | |
859 | return nfserr_inval; | |
860 | ||
861 | nfs4_lock_state(); | |
dd453dfd | 862 | status = nfs4_preprocess_stateid_op(cstate, stateid, WR_STATE, &filp); |
7e06b7f9 N |
863 | if (filp) |
864 | get_file(filp); | |
1da177e4 LT |
865 | nfs4_unlock_state(); |
866 | ||
375c5547 BF |
867 | if (status) { |
868 | dprintk("NFSD: nfsd4_write: couldn't process stateid!\n"); | |
869 | return status; | |
870 | } | |
871 | ||
31dec253 | 872 | cnt = write->wr_buflen; |
1da177e4 LT |
873 | write->wr_how_written = write->wr_stable_how; |
874 | p = (u32 *)write->wr_verifier.data; | |
875 | *p++ = nfssvc_boot.tv_sec; | |
876 | *p++ = nfssvc_boot.tv_usec; | |
877 | ||
ca364317 BF |
878 | status = nfsd_write(rqstp, &cstate->current_fh, filp, |
879 | write->wr_offset, rqstp->rq_vec, write->wr_vlen, | |
31dec253 | 880 | &cnt, &write->wr_how_written); |
7e06b7f9 N |
881 | if (filp) |
882 | fput(filp); | |
1da177e4 | 883 | |
31dec253 DS |
884 | write->wr_bytes_written = cnt; |
885 | ||
1da177e4 LT |
886 | if (status == nfserr_symlink) |
887 | status = nfserr_inval; | |
888 | return status; | |
1da177e4 LT |
889 | } |
890 | ||
891 | /* This routine never returns NFS_OK! If there are no other errors, it | |
892 | * will return NFSERR_SAME or NFSERR_NOT_SAME depending on whether the | |
893 | * attributes matched. VERIFY is implemented by mapping NFSERR_SAME | |
894 | * to NFS_OK after the call; NVERIFY by mapping NFSERR_NOT_SAME to NFS_OK. | |
895 | */ | |
b37ad28b | 896 | static __be32 |
c954e2a5 | 897 | _nfsd4_verify(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
ca364317 | 898 | struct nfsd4_verify *verify) |
1da177e4 | 899 | { |
2ebbc012 | 900 | __be32 *buf, *p; |
1da177e4 | 901 | int count; |
b37ad28b | 902 | __be32 status; |
1da177e4 | 903 | |
8837abca | 904 | status = fh_verify(rqstp, &cstate->current_fh, 0, NFSD_MAY_NOP); |
1da177e4 LT |
905 | if (status) |
906 | return status; | |
907 | ||
3c8e0316 YZ |
908 | status = check_attr_support(rqstp, cstate, verify->ve_bmval, NULL); |
909 | if (status) | |
910 | return status; | |
911 | ||
1da177e4 LT |
912 | if ((verify->ve_bmval[0] & FATTR4_WORD0_RDATTR_ERROR) |
913 | || (verify->ve_bmval[1] & NFSD_WRITEONLY_ATTRS_WORD1)) | |
914 | return nfserr_inval; | |
915 | if (verify->ve_attrlen & 3) | |
916 | return nfserr_inval; | |
917 | ||
918 | /* count in words: | |
919 | * bitmap_len(1) + bitmap(2) + attr_len(1) = 4 | |
920 | */ | |
921 | count = 4 + (verify->ve_attrlen >> 2); | |
922 | buf = kmalloc(count << 2, GFP_KERNEL); | |
923 | if (!buf) | |
924 | return nfserr_resource; | |
925 | ||
ca364317 BF |
926 | status = nfsd4_encode_fattr(&cstate->current_fh, |
927 | cstate->current_fh.fh_export, | |
928 | cstate->current_fh.fh_dentry, buf, | |
1da177e4 | 929 | &count, verify->ve_bmval, |
406a7ea9 | 930 | rqstp, 0); |
1da177e4 LT |
931 | |
932 | /* this means that nfsd4_encode_fattr() ran out of space */ | |
933 | if (status == nfserr_resource && count == 0) | |
934 | status = nfserr_not_same; | |
935 | if (status) | |
936 | goto out_kfree; | |
937 | ||
95ec28cd BH |
938 | /* skip bitmap */ |
939 | p = buf + 1 + ntohl(buf[0]); | |
1da177e4 LT |
940 | status = nfserr_not_same; |
941 | if (ntohl(*p++) != verify->ve_attrlen) | |
942 | goto out_kfree; | |
943 | if (!memcmp(p, verify->ve_attrval, verify->ve_attrlen)) | |
944 | status = nfserr_same; | |
945 | ||
946 | out_kfree: | |
947 | kfree(buf); | |
948 | return status; | |
949 | } | |
950 | ||
c954e2a5 BF |
951 | static __be32 |
952 | nfsd4_nverify(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, | |
953 | struct nfsd4_verify *verify) | |
954 | { | |
955 | __be32 status; | |
956 | ||
957 | status = _nfsd4_verify(rqstp, cstate, verify); | |
958 | return status == nfserr_not_same ? nfs_ok : status; | |
959 | } | |
960 | ||
961 | static __be32 | |
962 | nfsd4_verify(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, | |
963 | struct nfsd4_verify *verify) | |
964 | { | |
965 | __be32 status; | |
966 | ||
967 | status = _nfsd4_verify(rqstp, cstate, verify); | |
968 | return status == nfserr_same ? nfs_ok : status; | |
969 | } | |
970 | ||
1da177e4 LT |
971 | /* |
972 | * NULL call. | |
973 | */ | |
7111c66e | 974 | static __be32 |
1da177e4 LT |
975 | nfsd4_proc_null(struct svc_rqst *rqstp, void *argp, void *resp) |
976 | { | |
977 | return nfs_ok; | |
978 | } | |
979 | ||
e2b20950 SA |
980 | static inline void nfsd4_increment_op_stats(u32 opnum) |
981 | { | |
982 | if (opnum >= FIRST_NFS4_OP && opnum <= LAST_NFS4_OP) | |
983 | nfsdstats.nfs4_opcount[opnum]++; | |
984 | } | |
985 | ||
b591480b BF |
986 | typedef __be32(*nfsd4op_func)(struct svc_rqst *, struct nfsd4_compound_state *, |
987 | void *); | |
f9bb94c4 AA |
988 | enum nfsd4_op_flags { |
989 | ALLOWED_WITHOUT_FH = 1 << 0, /* No current filehandle required */ | |
5ece3caf MJ |
990 | ALLOWED_ON_ABSENT_FS = 1 << 1, /* ops processed on absent fs */ |
991 | ALLOWED_AS_FIRST_OP = 1 << 2, /* ops reqired first in compound */ | |
68d93184 BF |
992 | /* For rfc 5661 section 2.6.3.1.1: */ |
993 | OP_HANDLES_WRONGSEC = 1 << 3, | |
994 | OP_IS_PUTFH_LIKE = 1 << 4, | |
f9bb94c4 | 995 | }; |
b591480b BF |
996 | |
997 | struct nfsd4_operation { | |
998 | nfsd4op_func op_func; | |
999 | u32 op_flags; | |
b001a1b6 | 1000 | char *op_name; |
b591480b BF |
1001 | }; |
1002 | ||
1003 | static struct nfsd4_operation nfsd4_ops[]; | |
1004 | ||
f1c7f79b | 1005 | static const char *nfsd4_op_name(unsigned opnum); |
b001a1b6 | 1006 | |
f9bb94c4 | 1007 | /* |
57716355 | 1008 | * Enforce NFSv4.1 COMPOUND ordering rules: |
f9bb94c4 | 1009 | * |
57716355 BF |
1010 | * Also note, enforced elsewhere: |
1011 | * - SEQUENCE other than as first op results in | |
1012 | * NFS4ERR_SEQUENCE_POS. (Enforced in nfsd4_sequence().) | |
1d1bc8f2 BF |
1013 | * - BIND_CONN_TO_SESSION must be the only op in its compound. |
1014 | * (Enforced in nfsd4_bind_conn_to_session().) | |
57716355 BF |
1015 | * - DESTROY_SESSION must be the final operation in a compound, if |
1016 | * sessionid's in SEQUENCE and DESTROY_SESSION are the same. | |
1017 | * (Enforced in nfsd4_destroy_session().) | |
f9bb94c4 | 1018 | */ |
57716355 | 1019 | static __be32 nfs41_check_op_ordering(struct nfsd4_compoundargs *args) |
f9bb94c4 | 1020 | { |
57716355 BF |
1021 | struct nfsd4_op *op = &args->ops[0]; |
1022 | ||
1023 | /* These ordering requirements don't apply to NFSv4.0: */ | |
1024 | if (args->minorversion == 0) | |
1025 | return nfs_ok; | |
1026 | /* This is weird, but OK, not our problem: */ | |
1027 | if (args->opcnt == 0) | |
1028 | return nfs_ok; | |
1029 | if (op->status == nfserr_op_illegal) | |
1030 | return nfs_ok; | |
1031 | if (!(nfsd4_ops[op->opnum].op_flags & ALLOWED_AS_FIRST_OP)) | |
1032 | return nfserr_op_not_in_session; | |
1033 | if (op->opnum == OP_SEQUENCE) | |
1034 | return nfs_ok; | |
1035 | if (args->opcnt != 1) | |
1036 | return nfserr_not_only_op; | |
1037 | return nfs_ok; | |
f9bb94c4 AA |
1038 | } |
1039 | ||
22b03214 BF |
1040 | static inline struct nfsd4_operation *OPDESC(struct nfsd4_op *op) |
1041 | { | |
1042 | return &nfsd4_ops[op->opnum]; | |
1043 | } | |
1044 | ||
68d93184 BF |
1045 | static bool need_wrongsec_check(struct svc_rqst *rqstp) |
1046 | { | |
1047 | struct nfsd4_compoundres *resp = rqstp->rq_resp; | |
1048 | struct nfsd4_compoundargs *argp = rqstp->rq_argp; | |
1049 | struct nfsd4_op *this = &argp->ops[resp->opcnt - 1]; | |
1050 | struct nfsd4_op *next = &argp->ops[resp->opcnt]; | |
1051 | struct nfsd4_operation *thisd; | |
1052 | struct nfsd4_operation *nextd; | |
1053 | ||
1054 | thisd = OPDESC(this); | |
1055 | /* | |
1056 | * Most ops check wronsec on our own; only the putfh-like ops | |
1057 | * have special rules. | |
1058 | */ | |
1059 | if (!(thisd->op_flags & OP_IS_PUTFH_LIKE)) | |
1060 | return false; | |
1061 | /* | |
1062 | * rfc 5661 2.6.3.1.1.6: don't bother erroring out a | |
1063 | * put-filehandle operation if we're not going to use the | |
1064 | * result: | |
1065 | */ | |
1066 | if (argp->opcnt == resp->opcnt) | |
1067 | return false; | |
1068 | ||
1069 | nextd = OPDESC(next); | |
1070 | /* | |
1071 | * Rest of 2.6.3.1.1: certain operations will return WRONGSEC | |
1072 | * errors themselves as necessary; others should check for them | |
1073 | * now: | |
1074 | */ | |
1075 | return !(nextd->op_flags & OP_HANDLES_WRONGSEC); | |
1076 | } | |
1077 | ||
1da177e4 LT |
1078 | /* |
1079 | * COMPOUND call. | |
1080 | */ | |
7111c66e | 1081 | static __be32 |
1da177e4 LT |
1082 | nfsd4_proc_compound(struct svc_rqst *rqstp, |
1083 | struct nfsd4_compoundargs *args, | |
1084 | struct nfsd4_compoundres *resp) | |
1085 | { | |
1086 | struct nfsd4_op *op; | |
b591480b | 1087 | struct nfsd4_operation *opdesc; |
e354d571 | 1088 | struct nfsd4_compound_state *cstate = &resp->cstate; |
e5710199 | 1089 | int slack_bytes; |
b37ad28b | 1090 | __be32 status; |
1da177e4 | 1091 | |
1da177e4 | 1092 | resp->xbuf = &rqstp->rq_res; |
e354d571 AA |
1093 | resp->p = rqstp->rq_res.head[0].iov_base + |
1094 | rqstp->rq_res.head[0].iov_len; | |
1da177e4 LT |
1095 | resp->tagp = resp->p; |
1096 | /* reserve space for: taglen, tag, and opcnt */ | |
1097 | resp->p += 2 + XDR_QUADLEN(args->taglen); | |
1098 | resp->end = rqstp->rq_res.head[0].iov_base + PAGE_SIZE; | |
1099 | resp->taglen = args->taglen; | |
1100 | resp->tag = args->tag; | |
1101 | resp->opcnt = 0; | |
1102 | resp->rqstp = rqstp; | |
d87a8ade | 1103 | resp->cstate.minorversion = args->minorversion; |
e354d571 | 1104 | resp->cstate.replay_owner = NULL; |
26c0c75e | 1105 | resp->cstate.session = NULL; |
e354d571 AA |
1106 | fh_init(&resp->cstate.current_fh, NFS4_FHSIZE); |
1107 | fh_init(&resp->cstate.save_fh, NFS4_FHSIZE); | |
8ff30fa4 N |
1108 | /* |
1109 | * Don't use the deferral mechanism for NFSv4; compounds make it | |
1110 | * too hard to avoid non-idempotency problems. | |
1111 | */ | |
1112 | rqstp->rq_usedeferral = 0; | |
1da177e4 LT |
1113 | |
1114 | /* | |
1115 | * According to RFC3010, this takes precedence over all other errors. | |
1116 | */ | |
1117 | status = nfserr_minor_vers_mismatch; | |
8daf220a | 1118 | if (args->minorversion > nfsd_supported_minorversion) |
1da177e4 LT |
1119 | goto out; |
1120 | ||
57716355 BF |
1121 | status = nfs41_check_op_ordering(args); |
1122 | if (status) { | |
f9bb94c4 | 1123 | op = &args->ops[0]; |
57716355 | 1124 | op->status = status; |
f9bb94c4 AA |
1125 | goto encode_op; |
1126 | } | |
1127 | ||
1da177e4 LT |
1128 | while (!status && resp->opcnt < args->opcnt) { |
1129 | op = &args->ops[resp->opcnt++]; | |
1130 | ||
b001a1b6 BH |
1131 | dprintk("nfsv4 compound op #%d/%d: %d (%s)\n", |
1132 | resp->opcnt, args->opcnt, op->opnum, | |
1133 | nfsd4_op_name(op->opnum)); | |
1da177e4 LT |
1134 | /* |
1135 | * The XDR decode routines may have pre-set op->status; | |
1136 | * for example, if there is a miscellaneous XDR error | |
1137 | * it will be set to nfserr_bad_xdr. | |
1138 | */ | |
1139 | if (op->status) | |
1140 | goto encode_op; | |
1141 | ||
1142 | /* We must be able to encode a successful response to | |
1143 | * this operation, with enough room left over to encode a | |
1144 | * failed response to the next operation. If we don't | |
1145 | * have enough room, fail with ERR_RESOURCE. | |
1146 | */ | |
e5710199 BF |
1147 | slack_bytes = (char *)resp->end - (char *)resp->p; |
1148 | if (slack_bytes < COMPOUND_SLACK_SPACE | |
1149 | + COMPOUND_ERR_SLACK_SPACE) { | |
1150 | BUG_ON(slack_bytes < COMPOUND_ERR_SLACK_SPACE); | |
1da177e4 LT |
1151 | op->status = nfserr_resource; |
1152 | goto encode_op; | |
1153 | } | |
1154 | ||
22b03214 | 1155 | opdesc = OPDESC(op); |
b591480b | 1156 | |
ca364317 | 1157 | if (!cstate->current_fh.fh_dentry) { |
27d630ec | 1158 | if (!(opdesc->op_flags & ALLOWED_WITHOUT_FH)) { |
42ca0993 BF |
1159 | op->status = nfserr_nofilehandle; |
1160 | goto encode_op; | |
1161 | } | |
eeac294e BF |
1162 | } else if (cstate->current_fh.fh_export->ex_fslocs.migrated && |
1163 | !(opdesc->op_flags & ALLOWED_ON_ABSENT_FS)) { | |
42ca0993 | 1164 | op->status = nfserr_moved; |
1da177e4 LT |
1165 | goto encode_op; |
1166 | } | |
b591480b BF |
1167 | |
1168 | if (opdesc->op_func) | |
1169 | op->status = opdesc->op_func(rqstp, cstate, &op->u); | |
1170 | else | |
1da177e4 | 1171 | BUG_ON(op->status == nfs_ok); |
1da177e4 | 1172 | |
68d93184 BF |
1173 | if (!op->status && need_wrongsec_check(rqstp)) |
1174 | op->status = check_nfsd_access(cstate->current_fh.fh_export, rqstp); | |
1175 | ||
1da177e4 | 1176 | encode_op: |
49557cc7 | 1177 | /* Only from SEQUENCE */ |
da3846a2 AA |
1178 | if (resp->cstate.status == nfserr_replay_cache) { |
1179 | dprintk("%s NFS4.1 replay from cache\n", __func__); | |
abfabf8c | 1180 | status = op->status; |
da3846a2 AA |
1181 | goto out; |
1182 | } | |
a90b061c | 1183 | if (op->status == nfserr_replay_me) { |
a4f1706a | 1184 | op->replay = &cstate->replay_owner->so_replay; |
1da177e4 LT |
1185 | nfsd4_encode_replay(resp, op); |
1186 | status = op->status = op->replay->rp_status; | |
1187 | } else { | |
1188 | nfsd4_encode_operation(resp, op); | |
1189 | status = op->status; | |
1190 | } | |
0407717d BH |
1191 | |
1192 | dprintk("nfsv4 compound op %p opcnt %d #%d: %d: status %d\n", | |
1193 | args->ops, args->opcnt, resp->opcnt, op->opnum, | |
1194 | be32_to_cpu(status)); | |
1195 | ||
a4f1706a BF |
1196 | if (cstate->replay_owner) { |
1197 | nfs4_put_stateowner(cstate->replay_owner); | |
1198 | cstate->replay_owner = NULL; | |
1da177e4 | 1199 | } |
7e06b7f9 N |
1200 | /* XXX Ugh, we need to get rid of this kind of special case: */ |
1201 | if (op->opnum == OP_READ && op->u.read.rd_filp) | |
1202 | fput(op->u.read.rd_filp); | |
e2b20950 SA |
1203 | |
1204 | nfsd4_increment_op_stats(op->opnum); | |
1da177e4 LT |
1205 | } |
1206 | ||
da3846a2 | 1207 | resp->cstate.status = status; |
e354d571 AA |
1208 | fh_put(&resp->cstate.current_fh); |
1209 | fh_put(&resp->cstate.save_fh); | |
1210 | BUG_ON(resp->cstate.replay_owner); | |
1da177e4 LT |
1211 | out: |
1212 | nfsd4_release_compoundargs(args); | |
2f425878 AA |
1213 | /* Reset deferral mechanism for RPC deferrals */ |
1214 | rqstp->rq_usedeferral = 1; | |
3b12cd98 | 1215 | dprintk("nfsv4 compound returned %d\n", ntohl(status)); |
1da177e4 LT |
1216 | return status; |
1217 | } | |
1218 | ||
20766016 | 1219 | static struct nfsd4_operation nfsd4_ops[] = { |
b591480b BF |
1220 | [OP_ACCESS] = { |
1221 | .op_func = (nfsd4op_func)nfsd4_access, | |
b001a1b6 | 1222 | .op_name = "OP_ACCESS", |
b591480b BF |
1223 | }, |
1224 | [OP_CLOSE] = { | |
1225 | .op_func = (nfsd4op_func)nfsd4_close, | |
b001a1b6 | 1226 | .op_name = "OP_CLOSE", |
b591480b BF |
1227 | }, |
1228 | [OP_COMMIT] = { | |
1229 | .op_func = (nfsd4op_func)nfsd4_commit, | |
b001a1b6 | 1230 | .op_name = "OP_COMMIT", |
b591480b BF |
1231 | }, |
1232 | [OP_CREATE] = { | |
1233 | .op_func = (nfsd4op_func)nfsd4_create, | |
b001a1b6 | 1234 | .op_name = "OP_CREATE", |
b591480b BF |
1235 | }, |
1236 | [OP_DELEGRETURN] = { | |
1237 | .op_func = (nfsd4op_func)nfsd4_delegreturn, | |
b001a1b6 | 1238 | .op_name = "OP_DELEGRETURN", |
b591480b BF |
1239 | }, |
1240 | [OP_GETATTR] = { | |
1241 | .op_func = (nfsd4op_func)nfsd4_getattr, | |
eeac294e | 1242 | .op_flags = ALLOWED_ON_ABSENT_FS, |
b001a1b6 | 1243 | .op_name = "OP_GETATTR", |
b591480b BF |
1244 | }, |
1245 | [OP_GETFH] = { | |
1246 | .op_func = (nfsd4op_func)nfsd4_getfh, | |
b001a1b6 | 1247 | .op_name = "OP_GETFH", |
b591480b BF |
1248 | }, |
1249 | [OP_LINK] = { | |
1250 | .op_func = (nfsd4op_func)nfsd4_link, | |
b001a1b6 | 1251 | .op_name = "OP_LINK", |
b591480b BF |
1252 | }, |
1253 | [OP_LOCK] = { | |
1254 | .op_func = (nfsd4op_func)nfsd4_lock, | |
b001a1b6 | 1255 | .op_name = "OP_LOCK", |
b591480b BF |
1256 | }, |
1257 | [OP_LOCKT] = { | |
1258 | .op_func = (nfsd4op_func)nfsd4_lockt, | |
b001a1b6 | 1259 | .op_name = "OP_LOCKT", |
b591480b BF |
1260 | }, |
1261 | [OP_LOCKU] = { | |
1262 | .op_func = (nfsd4op_func)nfsd4_locku, | |
b001a1b6 | 1263 | .op_name = "OP_LOCKU", |
b591480b BF |
1264 | }, |
1265 | [OP_LOOKUP] = { | |
1266 | .op_func = (nfsd4op_func)nfsd4_lookup, | |
68d93184 | 1267 | .op_flags = OP_HANDLES_WRONGSEC, |
b001a1b6 | 1268 | .op_name = "OP_LOOKUP", |
b591480b BF |
1269 | }, |
1270 | [OP_LOOKUPP] = { | |
1271 | .op_func = (nfsd4op_func)nfsd4_lookupp, | |
68d93184 | 1272 | .op_flags = OP_HANDLES_WRONGSEC, |
b001a1b6 | 1273 | .op_name = "OP_LOOKUPP", |
b591480b BF |
1274 | }, |
1275 | [OP_NVERIFY] = { | |
1276 | .op_func = (nfsd4op_func)nfsd4_nverify, | |
b001a1b6 | 1277 | .op_name = "OP_NVERIFY", |
b591480b BF |
1278 | }, |
1279 | [OP_OPEN] = { | |
1280 | .op_func = (nfsd4op_func)nfsd4_open, | |
68d93184 | 1281 | .op_flags = OP_HANDLES_WRONGSEC, |
b001a1b6 | 1282 | .op_name = "OP_OPEN", |
b591480b BF |
1283 | }, |
1284 | [OP_OPEN_CONFIRM] = { | |
1285 | .op_func = (nfsd4op_func)nfsd4_open_confirm, | |
b001a1b6 | 1286 | .op_name = "OP_OPEN_CONFIRM", |
b591480b BF |
1287 | }, |
1288 | [OP_OPEN_DOWNGRADE] = { | |
1289 | .op_func = (nfsd4op_func)nfsd4_open_downgrade, | |
b001a1b6 | 1290 | .op_name = "OP_OPEN_DOWNGRADE", |
b591480b BF |
1291 | }, |
1292 | [OP_PUTFH] = { | |
1293 | .op_func = (nfsd4op_func)nfsd4_putfh, | |
68d93184 BF |
1294 | .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS |
1295 | | OP_IS_PUTFH_LIKE, | |
b001a1b6 | 1296 | .op_name = "OP_PUTFH", |
b591480b | 1297 | }, |
eeac294e | 1298 | [OP_PUTPUBFH] = { |
a1c8c4d1 | 1299 | .op_func = (nfsd4op_func)nfsd4_putrootfh, |
68d93184 BF |
1300 | .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS |
1301 | | OP_IS_PUTFH_LIKE, | |
b001a1b6 | 1302 | .op_name = "OP_PUTPUBFH", |
eeac294e | 1303 | }, |
b591480b BF |
1304 | [OP_PUTROOTFH] = { |
1305 | .op_func = (nfsd4op_func)nfsd4_putrootfh, | |
68d93184 BF |
1306 | .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS |
1307 | | OP_IS_PUTFH_LIKE, | |
b001a1b6 | 1308 | .op_name = "OP_PUTROOTFH", |
b591480b BF |
1309 | }, |
1310 | [OP_READ] = { | |
1311 | .op_func = (nfsd4op_func)nfsd4_read, | |
b001a1b6 | 1312 | .op_name = "OP_READ", |
b591480b BF |
1313 | }, |
1314 | [OP_READDIR] = { | |
1315 | .op_func = (nfsd4op_func)nfsd4_readdir, | |
b001a1b6 | 1316 | .op_name = "OP_READDIR", |
b591480b BF |
1317 | }, |
1318 | [OP_READLINK] = { | |
1319 | .op_func = (nfsd4op_func)nfsd4_readlink, | |
b001a1b6 | 1320 | .op_name = "OP_READLINK", |
b591480b BF |
1321 | }, |
1322 | [OP_REMOVE] = { | |
1323 | .op_func = (nfsd4op_func)nfsd4_remove, | |
b001a1b6 | 1324 | .op_name = "OP_REMOVE", |
b591480b BF |
1325 | }, |
1326 | [OP_RENAME] = { | |
b001a1b6 | 1327 | .op_name = "OP_RENAME", |
b591480b BF |
1328 | .op_func = (nfsd4op_func)nfsd4_rename, |
1329 | }, | |
1330 | [OP_RENEW] = { | |
1331 | .op_func = (nfsd4op_func)nfsd4_renew, | |
27d630ec | 1332 | .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS, |
b001a1b6 | 1333 | .op_name = "OP_RENEW", |
b591480b BF |
1334 | }, |
1335 | [OP_RESTOREFH] = { | |
1336 | .op_func = (nfsd4op_func)nfsd4_restorefh, | |
68d93184 BF |
1337 | .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS |
1338 | | OP_IS_PUTFH_LIKE, | |
b001a1b6 | 1339 | .op_name = "OP_RESTOREFH", |
b591480b BF |
1340 | }, |
1341 | [OP_SAVEFH] = { | |
1342 | .op_func = (nfsd4op_func)nfsd4_savefh, | |
68d93184 | 1343 | .op_flags = OP_HANDLES_WRONGSEC, |
b001a1b6 | 1344 | .op_name = "OP_SAVEFH", |
b591480b | 1345 | }, |
dcb488a3 AA |
1346 | [OP_SECINFO] = { |
1347 | .op_func = (nfsd4op_func)nfsd4_secinfo, | |
68d93184 | 1348 | .op_flags = OP_HANDLES_WRONGSEC, |
b001a1b6 | 1349 | .op_name = "OP_SECINFO", |
dcb488a3 | 1350 | }, |
b591480b BF |
1351 | [OP_SETATTR] = { |
1352 | .op_func = (nfsd4op_func)nfsd4_setattr, | |
b001a1b6 | 1353 | .op_name = "OP_SETATTR", |
b591480b BF |
1354 | }, |
1355 | [OP_SETCLIENTID] = { | |
1356 | .op_func = (nfsd4op_func)nfsd4_setclientid, | |
27d630ec | 1357 | .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS, |
b001a1b6 | 1358 | .op_name = "OP_SETCLIENTID", |
b591480b BF |
1359 | }, |
1360 | [OP_SETCLIENTID_CONFIRM] = { | |
1361 | .op_func = (nfsd4op_func)nfsd4_setclientid_confirm, | |
27d630ec | 1362 | .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS, |
b001a1b6 | 1363 | .op_name = "OP_SETCLIENTID_CONFIRM", |
b591480b BF |
1364 | }, |
1365 | [OP_VERIFY] = { | |
1366 | .op_func = (nfsd4op_func)nfsd4_verify, | |
b001a1b6 | 1367 | .op_name = "OP_VERIFY", |
b591480b BF |
1368 | }, |
1369 | [OP_WRITE] = { | |
1370 | .op_func = (nfsd4op_func)nfsd4_write, | |
b001a1b6 | 1371 | .op_name = "OP_WRITE", |
b591480b BF |
1372 | }, |
1373 | [OP_RELEASE_LOCKOWNER] = { | |
1374 | .op_func = (nfsd4op_func)nfsd4_release_lockowner, | |
27d630ec | 1375 | .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS, |
b001a1b6 | 1376 | .op_name = "OP_RELEASE_LOCKOWNER", |
b591480b | 1377 | }, |
069b6ad4 AA |
1378 | |
1379 | /* NFSv4.1 operations */ | |
1380 | [OP_EXCHANGE_ID] = { | |
1381 | .op_func = (nfsd4op_func)nfsd4_exchange_id, | |
f9bb94c4 | 1382 | .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP, |
069b6ad4 AA |
1383 | .op_name = "OP_EXCHANGE_ID", |
1384 | }, | |
1d1bc8f2 BF |
1385 | [OP_BIND_CONN_TO_SESSION] = { |
1386 | .op_func = (nfsd4op_func)nfsd4_bind_conn_to_session, | |
1387 | .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP, | |
1388 | .op_name = "OP_BIND_CONN_TO_SESSION", | |
1389 | }, | |
069b6ad4 AA |
1390 | [OP_CREATE_SESSION] = { |
1391 | .op_func = (nfsd4op_func)nfsd4_create_session, | |
f9bb94c4 | 1392 | .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP, |
069b6ad4 AA |
1393 | .op_name = "OP_CREATE_SESSION", |
1394 | }, | |
1395 | [OP_DESTROY_SESSION] = { | |
1396 | .op_func = (nfsd4op_func)nfsd4_destroy_session, | |
f9bb94c4 | 1397 | .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP, |
069b6ad4 AA |
1398 | .op_name = "OP_DESTROY_SESSION", |
1399 | }, | |
1400 | [OP_SEQUENCE] = { | |
1401 | .op_func = (nfsd4op_func)nfsd4_sequence, | |
f9bb94c4 | 1402 | .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP, |
069b6ad4 AA |
1403 | .op_name = "OP_SEQUENCE", |
1404 | }, | |
094b5d74 BH |
1405 | [OP_DESTROY_CLIENTID] = { |
1406 | .op_func = NULL, | |
1407 | .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP, | |
1408 | .op_name = "OP_DESTROY_CLIENTID", | |
1409 | }, | |
4dc6ec00 BF |
1410 | [OP_RECLAIM_COMPLETE] = { |
1411 | .op_func = (nfsd4op_func)nfsd4_reclaim_complete, | |
1412 | .op_flags = ALLOWED_WITHOUT_FH, | |
1413 | .op_name = "OP_RECLAIM_COMPLETE", | |
1414 | }, | |
04f4ad16 BF |
1415 | [OP_SECINFO_NO_NAME] = { |
1416 | .op_func = (nfsd4op_func)nfsd4_secinfo_no_name, | |
68d93184 | 1417 | .op_flags = OP_HANDLES_WRONGSEC, |
04f4ad16 BF |
1418 | .op_name = "OP_SECINFO_NO_NAME", |
1419 | }, | |
17456804 BS |
1420 | [OP_TEST_STATEID] = { |
1421 | .op_func = (nfsd4op_func)nfsd4_test_stateid, | |
1422 | .op_flags = ALLOWED_WITHOUT_FH, | |
1423 | .op_name = "OP_TEST_STATEID", | |
1424 | }, | |
e1ca12df BS |
1425 | [OP_FREE_STATEID] = { |
1426 | .op_func = (nfsd4op_func)nfsd4_free_stateid, | |
1427 | .op_flags = ALLOWED_WITHOUT_FH, | |
1428 | .op_name = "OP_FREE_STATEID", | |
1429 | }, | |
b591480b BF |
1430 | }; |
1431 | ||
f1c7f79b | 1432 | static const char *nfsd4_op_name(unsigned opnum) |
b001a1b6 BH |
1433 | { |
1434 | if (opnum < ARRAY_SIZE(nfsd4_ops)) | |
1435 | return nfsd4_ops[opnum].op_name; | |
1436 | return "unknown_operation"; | |
1437 | } | |
1438 | ||
1da177e4 | 1439 | #define nfsd4_voidres nfsd4_voidargs |
1da177e4 LT |
1440 | struct nfsd4_voidargs { int dummy; }; |
1441 | ||
1da177e4 LT |
1442 | /* |
1443 | * TODO: At the present time, the NFSv4 server does not do XID caching | |
1444 | * of requests. Implementing XID caching would not be a serious problem, | |
1445 | * although it would require a mild change in interfaces since one | |
1446 | * doesn't know whether an NFSv4 request is idempotent until after the | |
1447 | * XDR decode. However, XID caching totally confuses pynfs (Peter | |
1448 | * Astrand's regression testsuite for NFSv4 servers), which reuses | |
1449 | * XID's liberally, so I've left it unimplemented until pynfs generates | |
1450 | * better XID's. | |
1451 | */ | |
1452 | static struct svc_procedure nfsd_procedures4[2] = { | |
0a93a47f YZ |
1453 | [NFSPROC4_NULL] = { |
1454 | .pc_func = (svc_procfunc) nfsd4_proc_null, | |
1455 | .pc_encode = (kxdrproc_t) nfs4svc_encode_voidres, | |
1456 | .pc_argsize = sizeof(struct nfsd4_voidargs), | |
1457 | .pc_ressize = sizeof(struct nfsd4_voidres), | |
1458 | .pc_cachetype = RC_NOCACHE, | |
1459 | .pc_xdrressize = 1, | |
1460 | }, | |
1461 | [NFSPROC4_COMPOUND] = { | |
1462 | .pc_func = (svc_procfunc) nfsd4_proc_compound, | |
1463 | .pc_decode = (kxdrproc_t) nfs4svc_decode_compoundargs, | |
1464 | .pc_encode = (kxdrproc_t) nfs4svc_encode_compoundres, | |
1465 | .pc_argsize = sizeof(struct nfsd4_compoundargs), | |
1466 | .pc_ressize = sizeof(struct nfsd4_compoundres), | |
1467 | .pc_cachetype = RC_NOCACHE, | |
1468 | .pc_xdrressize = NFSD_BUFSIZE/4, | |
1469 | }, | |
1da177e4 LT |
1470 | }; |
1471 | ||
1472 | struct svc_version nfsd_version4 = { | |
1473 | .vs_vers = 4, | |
1474 | .vs_nproc = 2, | |
1475 | .vs_proc = nfsd_procedures4, | |
1476 | .vs_dispatch = nfsd_dispatch, | |
1477 | .vs_xdrsize = NFS4_SVC_XDRSIZE, | |
1478 | }; | |
1479 | ||
1480 | /* | |
1481 | * Local variables: | |
1482 | * c-basic-offset: 8 | |
1483 | * End: | |
1484 | */ |