Commit | Line | Data |
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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 | ||
a043226b BF |
159 | accmode |= NFSD_MAY_READ_IF_EXEC; |
160 | ||
1da177e4 | 161 | if (open->op_share_access & NFS4_SHARE_ACCESS_READ) |
8837abca | 162 | accmode |= NFSD_MAY_READ; |
9801d8a3 | 163 | if (open->op_share_access & NFS4_SHARE_ACCESS_WRITE) |
8837abca | 164 | accmode |= (NFSD_MAY_WRITE | NFSD_MAY_TRUNC); |
57ecb34f | 165 | if (open->op_share_deny & NFS4_SHARE_DENY_READ) |
8837abca | 166 | accmode |= NFSD_MAY_WRITE; |
1da177e4 LT |
167 | |
168 | status = fh_verify(rqstp, current_fh, S_IFREG, accmode); | |
169 | ||
170 | return status; | |
171 | } | |
172 | ||
aadab6c6 BF |
173 | static __be32 nfsd_check_obj_isreg(struct svc_fh *fh) |
174 | { | |
175 | umode_t mode = fh->fh_dentry->d_inode->i_mode; | |
176 | ||
177 | if (S_ISREG(mode)) | |
178 | return nfs_ok; | |
179 | if (S_ISDIR(mode)) | |
180 | return nfserr_isdir; | |
181 | /* | |
182 | * Using err_symlink as our catch-all case may look odd; but | |
183 | * there's no other obvious error for this case in 4.0, and we | |
184 | * happen to know that it will cause the linux v4 client to do | |
185 | * the right thing on attempts to open something other than a | |
186 | * regular file. | |
187 | */ | |
188 | return nfserr_symlink; | |
189 | } | |
190 | ||
b37ad28b | 191 | static __be32 |
1da177e4 LT |
192 | do_open_lookup(struct svc_rqst *rqstp, struct svc_fh *current_fh, struct nfsd4_open *open) |
193 | { | |
194 | struct svc_fh resfh; | |
b37ad28b | 195 | __be32 status; |
81ac95c5 | 196 | int created = 0; |
1da177e4 LT |
197 | |
198 | fh_init(&resfh, NFS4_FHSIZE); | |
199 | open->op_truncate = 0; | |
200 | ||
201 | if (open->op_create) { | |
79fb54ab BH |
202 | /* FIXME: check session persistence and pnfs flags. |
203 | * The nfsv4.1 spec requires the following semantics: | |
204 | * | |
205 | * Persistent | pNFS | Server REQUIRED | Client Allowed | |
206 | * Reply Cache | server | | | |
207 | * -------------+--------+-----------------+-------------------- | |
208 | * no | no | EXCLUSIVE4_1 | EXCLUSIVE4_1 | |
209 | * | | | (SHOULD) | |
210 | * | | and EXCLUSIVE4 | or EXCLUSIVE4 | |
211 | * | | | (SHOULD NOT) | |
212 | * no | yes | EXCLUSIVE4_1 | EXCLUSIVE4_1 | |
213 | * yes | no | GUARDED4 | GUARDED4 | |
214 | * yes | yes | GUARDED4 | GUARDED4 | |
215 | */ | |
216 | ||
1da177e4 LT |
217 | /* |
218 | * Note: create modes (UNCHECKED,GUARDED...) are the same | |
ac6721a1 | 219 | * in NFSv4 as in v3 except EXCLUSIVE4_1. |
1da177e4 | 220 | */ |
ac6721a1 | 221 | status = do_nfsd_create(rqstp, current_fh, open->op_fname.data, |
1da177e4 LT |
222 | open->op_fname.len, &open->op_iattr, |
223 | &resfh, open->op_createmode, | |
749997e5 JL |
224 | (u32 *)open->op_verf.data, |
225 | &open->op_truncate, &created); | |
226 | ||
99f88726 BF |
227 | /* |
228 | * Following rfc 3530 14.2.16, use the returned bitmask | |
229 | * to indicate which attributes we used to store the | |
230 | * verifier: | |
749997e5 JL |
231 | */ |
232 | if (open->op_createmode == NFS4_CREATE_EXCLUSIVE && status == 0) | |
99f88726 | 233 | open->op_bmval[1] = (FATTR4_WORD1_TIME_ACCESS | |
749997e5 | 234 | FATTR4_WORD1_TIME_MODIFY); |
af85852d | 235 | } else { |
1da177e4 LT |
236 | status = nfsd_lookup(rqstp, current_fh, |
237 | open->op_fname.data, open->op_fname.len, &resfh); | |
238 | fh_unlock(current_fh); | |
aadab6c6 BF |
239 | if (status) |
240 | goto out; | |
241 | status = nfsd_check_obj_isreg(&resfh); | |
1da177e4 | 242 | } |
af85852d BF |
243 | if (status) |
244 | goto out; | |
1da177e4 | 245 | |
9208faf2 YZ |
246 | if (is_create_with_attrs(open) && open->op_acl != NULL) |
247 | do_set_nfs4_acl(rqstp, &resfh, open->op_acl, open->op_bmval); | |
248 | ||
af85852d | 249 | set_change_info(&open->op_cinfo, current_fh); |
13024b7b | 250 | fh_dup2(current_fh, &resfh); |
1da177e4 | 251 | |
af85852d | 252 | /* set reply cache */ |
fe0750e5 | 253 | fh_copy_shallow(&open->op_openowner->oo_owner.so_replay.rp_openfh, |
a4773c08 | 254 | &resfh.fh_handle); |
81ac95c5 | 255 | if (!created) |
8837abca MS |
256 | status = do_open_permission(rqstp, current_fh, open, |
257 | NFSD_MAY_NOP); | |
1da177e4 | 258 | |
af85852d | 259 | out: |
1da177e4 LT |
260 | fh_put(&resfh); |
261 | return status; | |
262 | } | |
263 | ||
b37ad28b | 264 | static __be32 |
1da177e4 LT |
265 | do_open_fhandle(struct svc_rqst *rqstp, struct svc_fh *current_fh, struct nfsd4_open *open) |
266 | { | |
b37ad28b | 267 | __be32 status; |
1da177e4 LT |
268 | |
269 | /* Only reclaims from previously confirmed clients are valid */ | |
270 | if ((status = nfs4_check_open_reclaim(&open->op_clientid))) | |
271 | return status; | |
272 | ||
273 | /* We don't know the target directory, and therefore can not | |
274 | * set the change info | |
275 | */ | |
276 | ||
277 | memset(&open->op_cinfo, 0, sizeof(struct nfsd4_change_info)); | |
278 | ||
279 | /* set replay cache */ | |
fe0750e5 | 280 | fh_copy_shallow(&open->op_openowner->oo_owner.so_replay.rp_openfh, |
a4773c08 | 281 | ¤t_fh->fh_handle); |
1da177e4 LT |
282 | |
283 | open->op_truncate = (open->op_iattr.ia_valid & ATTR_SIZE) && | |
284 | (open->op_iattr.ia_size == 0); | |
285 | ||
8837abca MS |
286 | status = do_open_permission(rqstp, current_fh, open, |
287 | NFSD_MAY_OWNER_OVERRIDE); | |
1da177e4 LT |
288 | |
289 | return status; | |
290 | } | |
291 | ||
60adfc50 AA |
292 | static void |
293 | copy_clientid(clientid_t *clid, struct nfsd4_session *session) | |
294 | { | |
295 | struct nfsd4_sessionid *sid = | |
296 | (struct nfsd4_sessionid *)session->se_sessionid.data; | |
297 | ||
298 | clid->cl_boot = sid->clientid.cl_boot; | |
299 | clid->cl_id = sid->clientid.cl_id; | |
300 | } | |
1da177e4 | 301 | |
7191155b | 302 | static __be32 |
ca364317 | 303 | nfsd4_open(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
a4f1706a | 304 | struct nfsd4_open *open) |
1da177e4 | 305 | { |
b37ad28b | 306 | __be32 status; |
6668958f AA |
307 | struct nfsd4_compoundres *resp; |
308 | ||
fe0750e5 | 309 | dprintk("NFSD: nfsd4_open filename %.*s op_openowner %p\n", |
1da177e4 | 310 | (int)open->op_fname.len, open->op_fname.data, |
fe0750e5 | 311 | open->op_openowner); |
1da177e4 | 312 | |
1da177e4 LT |
313 | /* This check required by spec. */ |
314 | if (open->op_create && open->op_claim_type != NFS4_OPEN_CLAIM_NULL) | |
315 | return nfserr_inval; | |
316 | ||
ab1350b2 MJ |
317 | /* |
318 | * RFC5661 18.51.3 | |
319 | * Before RECLAIM_COMPLETE done, server should deny new lock | |
320 | */ | |
321 | if (nfsd4_has_session(cstate) && | |
322 | !cstate->session->se_client->cl_firststate && | |
323 | open->op_claim_type != NFS4_OPEN_CLAIM_PREVIOUS) | |
324 | return nfserr_grace; | |
325 | ||
60adfc50 AA |
326 | if (nfsd4_has_session(cstate)) |
327 | copy_clientid(&open->op_clientid, cstate->session); | |
328 | ||
1da177e4 LT |
329 | nfs4_lock_state(); |
330 | ||
331 | /* check seqid for replay. set nfs4_owner */ | |
6668958f AA |
332 | resp = rqstp->rq_resp; |
333 | status = nfsd4_process_open1(&resp->cstate, open); | |
a90b061c | 334 | if (status == nfserr_replay_me) { |
fe0750e5 | 335 | struct nfs4_replay *rp = &open->op_openowner->oo_owner.so_replay; |
ca364317 | 336 | fh_put(&cstate->current_fh); |
a4773c08 BF |
337 | fh_copy_shallow(&cstate->current_fh.fh_handle, |
338 | &rp->rp_openfh); | |
8837abca | 339 | status = fh_verify(rqstp, &cstate->current_fh, 0, NFSD_MAY_NOP); |
1da177e4 LT |
340 | if (status) |
341 | dprintk("nfsd4_open: replay failed" | |
342 | " restoring previous filehandle\n"); | |
343 | else | |
a90b061c | 344 | status = nfserr_replay_me; |
1da177e4 LT |
345 | } |
346 | if (status) | |
347 | goto out; | |
fb553c0f | 348 | |
3c8e0316 YZ |
349 | status = nfsd4_check_open_attributes(rqstp, cstate, open); |
350 | if (status) | |
351 | goto out; | |
352 | ||
fb553c0f BF |
353 | /* Openowner is now set, so sequence id will get bumped. Now we need |
354 | * these checks before we do any creates: */ | |
cbd0d51a | 355 | status = nfserr_grace; |
af558e33 | 356 | if (locks_in_grace() && open->op_claim_type != NFS4_OPEN_CLAIM_PREVIOUS) |
cbd0d51a BF |
357 | goto out; |
358 | status = nfserr_no_grace; | |
af558e33 | 359 | if (!locks_in_grace() && open->op_claim_type == NFS4_OPEN_CLAIM_PREVIOUS) |
cbd0d51a | 360 | goto out; |
fb553c0f | 361 | |
1da177e4 | 362 | switch (open->op_claim_type) { |
0dd3c192 | 363 | case NFS4_OPEN_CLAIM_DELEGATE_CUR: |
1da177e4 LT |
364 | case NFS4_OPEN_CLAIM_NULL: |
365 | /* | |
366 | * (1) set CURRENT_FH to the file being opened, | |
367 | * creating it if necessary, (2) set open->op_cinfo, | |
368 | * (3) set open->op_truncate if the file is to be | |
369 | * truncated after opening, (4) do permission checking. | |
370 | */ | |
ca364317 BF |
371 | status = do_open_lookup(rqstp, &cstate->current_fh, |
372 | open); | |
1da177e4 LT |
373 | if (status) |
374 | goto out; | |
375 | break; | |
376 | case NFS4_OPEN_CLAIM_PREVIOUS: | |
fe0750e5 | 377 | open->op_openowner->oo_confirmed = 1; |
1da177e4 LT |
378 | /* |
379 | * The CURRENT_FH is already set to the file being | |
380 | * opened. (1) set open->op_cinfo, (2) set | |
381 | * open->op_truncate if the file is to be truncated | |
382 | * after opening, (3) do permission checking. | |
383 | */ | |
ca364317 BF |
384 | status = do_open_fhandle(rqstp, &cstate->current_fh, |
385 | open); | |
1da177e4 LT |
386 | if (status) |
387 | goto out; | |
388 | break; | |
1da177e4 | 389 | case NFS4_OPEN_CLAIM_DELEGATE_PREV: |
fe0750e5 | 390 | open->op_openowner->oo_confirmed = 1; |
2fdada03 | 391 | dprintk("NFSD: unsupported OPEN claim type %d\n", |
1da177e4 LT |
392 | open->op_claim_type); |
393 | status = nfserr_notsupp; | |
394 | goto out; | |
395 | default: | |
2fdada03 | 396 | dprintk("NFSD: Invalid OPEN claim type %d\n", |
1da177e4 LT |
397 | open->op_claim_type); |
398 | status = nfserr_inval; | |
399 | goto out; | |
400 | } | |
401 | /* | |
402 | * nfsd4_process_open2() does the actual opening of the file. If | |
403 | * successful, it (1) truncates the file if open->op_truncate was | |
404 | * set, (2) sets open->op_stateid, (3) sets open->op_delegation. | |
405 | */ | |
ca364317 | 406 | status = nfsd4_process_open2(rqstp, &cstate->current_fh, open); |
1da177e4 | 407 | out: |
fe0750e5 BF |
408 | if (open->op_openowner) |
409 | cstate->replay_owner = &open->op_openowner->oo_owner; | |
7c13f344 | 410 | else |
5ec094c1 | 411 | nfs4_unlock_state(); |
1da177e4 LT |
412 | return status; |
413 | } | |
414 | ||
415 | /* | |
416 | * filehandle-manipulating ops. | |
417 | */ | |
7191155b | 418 | static __be32 |
b591480b BF |
419 | nfsd4_getfh(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
420 | struct svc_fh **getfh) | |
1da177e4 | 421 | { |
ca364317 | 422 | if (!cstate->current_fh.fh_dentry) |
1da177e4 LT |
423 | return nfserr_nofilehandle; |
424 | ||
ca364317 | 425 | *getfh = &cstate->current_fh; |
1da177e4 LT |
426 | return nfs_ok; |
427 | } | |
428 | ||
7191155b | 429 | static __be32 |
ca364317 BF |
430 | nfsd4_putfh(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
431 | struct nfsd4_putfh *putfh) | |
1da177e4 | 432 | { |
ca364317 BF |
433 | fh_put(&cstate->current_fh); |
434 | cstate->current_fh.fh_handle.fh_size = putfh->pf_fhlen; | |
435 | memcpy(&cstate->current_fh.fh_handle.fh_base, putfh->pf_fhval, | |
436 | putfh->pf_fhlen); | |
68d93184 | 437 | return fh_verify(rqstp, &cstate->current_fh, 0, NFSD_MAY_BYPASS_GSS); |
1da177e4 LT |
438 | } |
439 | ||
7191155b | 440 | static __be32 |
b591480b BF |
441 | nfsd4_putrootfh(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
442 | void *arg) | |
1da177e4 | 443 | { |
b37ad28b | 444 | __be32 status; |
1da177e4 | 445 | |
ca364317 | 446 | fh_put(&cstate->current_fh); |
df547efb | 447 | status = exp_pseudoroot(rqstp, &cstate->current_fh); |
1da177e4 LT |
448 | return status; |
449 | } | |
450 | ||
7191155b | 451 | static __be32 |
b591480b BF |
452 | nfsd4_restorefh(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
453 | void *arg) | |
1da177e4 | 454 | { |
ca364317 | 455 | if (!cstate->save_fh.fh_dentry) |
1da177e4 LT |
456 | return nfserr_restorefh; |
457 | ||
ca364317 | 458 | fh_dup2(&cstate->current_fh, &cstate->save_fh); |
1da177e4 LT |
459 | return nfs_ok; |
460 | } | |
461 | ||
7191155b | 462 | static __be32 |
b591480b BF |
463 | nfsd4_savefh(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
464 | void *arg) | |
1da177e4 | 465 | { |
ca364317 | 466 | if (!cstate->current_fh.fh_dentry) |
1da177e4 LT |
467 | return nfserr_nofilehandle; |
468 | ||
ca364317 | 469 | fh_dup2(&cstate->save_fh, &cstate->current_fh); |
1da177e4 LT |
470 | return nfs_ok; |
471 | } | |
472 | ||
473 | /* | |
474 | * misc nfsv4 ops | |
475 | */ | |
7191155b | 476 | static __be32 |
ca364317 BF |
477 | nfsd4_access(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
478 | struct nfsd4_access *access) | |
1da177e4 LT |
479 | { |
480 | if (access->ac_req_access & ~NFS3_ACCESS_FULL) | |
481 | return nfserr_inval; | |
482 | ||
483 | access->ac_resp_access = access->ac_req_access; | |
ca364317 BF |
484 | return nfsd_access(rqstp, &cstate->current_fh, &access->ac_resp_access, |
485 | &access->ac_supported); | |
1da177e4 LT |
486 | } |
487 | ||
7191155b | 488 | static __be32 |
ca364317 BF |
489 | nfsd4_commit(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
490 | struct nfsd4_commit *commit) | |
1da177e4 | 491 | { |
1da177e4 LT |
492 | u32 *p = (u32 *)commit->co_verf.data; |
493 | *p++ = nfssvc_boot.tv_sec; | |
494 | *p++ = nfssvc_boot.tv_usec; | |
495 | ||
75c096f7 | 496 | return nfsd_commit(rqstp, &cstate->current_fh, commit->co_offset, |
ca364317 | 497 | commit->co_count); |
1da177e4 LT |
498 | } |
499 | ||
b37ad28b | 500 | static __be32 |
ca364317 BF |
501 | nfsd4_create(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
502 | struct nfsd4_create *create) | |
1da177e4 LT |
503 | { |
504 | struct svc_fh resfh; | |
b37ad28b | 505 | __be32 status; |
1da177e4 LT |
506 | dev_t rdev; |
507 | ||
508 | fh_init(&resfh, NFS4_FHSIZE); | |
509 | ||
8837abca MS |
510 | status = fh_verify(rqstp, &cstate->current_fh, S_IFDIR, |
511 | NFSD_MAY_CREATE); | |
1da177e4 LT |
512 | if (status) |
513 | return status; | |
514 | ||
3c8e0316 YZ |
515 | status = check_attr_support(rqstp, cstate, create->cr_bmval, |
516 | nfsd_attrmask); | |
517 | if (status) | |
518 | return status; | |
519 | ||
1da177e4 LT |
520 | switch (create->cr_type) { |
521 | case NF4LNK: | |
522 | /* ugh! we have to null-terminate the linktext, or | |
523 | * vfs_symlink() will choke. it is always safe to | |
524 | * null-terminate by brute force, since at worst we | |
525 | * will overwrite the first byte of the create namelen | |
526 | * in the XDR buffer, which has already been extracted | |
527 | * during XDR decode. | |
528 | */ | |
529 | create->cr_linkname[create->cr_linklen] = 0; | |
530 | ||
ca364317 BF |
531 | status = nfsd_symlink(rqstp, &cstate->current_fh, |
532 | create->cr_name, create->cr_namelen, | |
533 | create->cr_linkname, create->cr_linklen, | |
534 | &resfh, &create->cr_iattr); | |
1da177e4 LT |
535 | break; |
536 | ||
537 | case NF4BLK: | |
538 | rdev = MKDEV(create->cr_specdata1, create->cr_specdata2); | |
539 | if (MAJOR(rdev) != create->cr_specdata1 || | |
540 | MINOR(rdev) != create->cr_specdata2) | |
541 | return nfserr_inval; | |
ca364317 BF |
542 | status = nfsd_create(rqstp, &cstate->current_fh, |
543 | create->cr_name, create->cr_namelen, | |
544 | &create->cr_iattr, S_IFBLK, rdev, &resfh); | |
1da177e4 LT |
545 | break; |
546 | ||
547 | case NF4CHR: | |
548 | rdev = MKDEV(create->cr_specdata1, create->cr_specdata2); | |
549 | if (MAJOR(rdev) != create->cr_specdata1 || | |
550 | MINOR(rdev) != create->cr_specdata2) | |
551 | return nfserr_inval; | |
ca364317 BF |
552 | status = nfsd_create(rqstp, &cstate->current_fh, |
553 | create->cr_name, create->cr_namelen, | |
554 | &create->cr_iattr,S_IFCHR, rdev, &resfh); | |
1da177e4 LT |
555 | break; |
556 | ||
557 | case NF4SOCK: | |
ca364317 BF |
558 | status = nfsd_create(rqstp, &cstate->current_fh, |
559 | create->cr_name, create->cr_namelen, | |
560 | &create->cr_iattr, S_IFSOCK, 0, &resfh); | |
1da177e4 LT |
561 | break; |
562 | ||
563 | case NF4FIFO: | |
ca364317 BF |
564 | status = nfsd_create(rqstp, &cstate->current_fh, |
565 | create->cr_name, create->cr_namelen, | |
566 | &create->cr_iattr, S_IFIFO, 0, &resfh); | |
1da177e4 LT |
567 | break; |
568 | ||
569 | case NF4DIR: | |
570 | create->cr_iattr.ia_valid &= ~ATTR_SIZE; | |
ca364317 BF |
571 | status = nfsd_create(rqstp, &cstate->current_fh, |
572 | create->cr_name, create->cr_namelen, | |
573 | &create->cr_iattr, S_IFDIR, 0, &resfh); | |
1da177e4 LT |
574 | break; |
575 | ||
576 | default: | |
577 | status = nfserr_badtype; | |
578 | } | |
579 | ||
9208faf2 YZ |
580 | if (status) |
581 | goto out; | |
1da177e4 | 582 | |
9208faf2 YZ |
583 | if (create->cr_acl != NULL) |
584 | do_set_nfs4_acl(rqstp, &resfh, create->cr_acl, | |
585 | create->cr_bmval); | |
586 | ||
587 | fh_unlock(&cstate->current_fh); | |
588 | set_change_info(&create->cr_cinfo, &cstate->current_fh); | |
589 | fh_dup2(&cstate->current_fh, &resfh); | |
590 | out: | |
1da177e4 LT |
591 | fh_put(&resfh); |
592 | return status; | |
593 | } | |
594 | ||
7191155b | 595 | static __be32 |
ca364317 BF |
596 | nfsd4_getattr(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
597 | struct nfsd4_getattr *getattr) | |
1da177e4 | 598 | { |
b37ad28b | 599 | __be32 status; |
1da177e4 | 600 | |
8837abca | 601 | status = fh_verify(rqstp, &cstate->current_fh, 0, NFSD_MAY_NOP); |
1da177e4 LT |
602 | if (status) |
603 | return status; | |
604 | ||
605 | if (getattr->ga_bmval[1] & NFSD_WRITEONLY_ATTRS_WORD1) | |
606 | return nfserr_inval; | |
607 | ||
7e705706 AA |
608 | getattr->ga_bmval[0] &= nfsd_suppattrs0(cstate->minorversion); |
609 | getattr->ga_bmval[1] &= nfsd_suppattrs1(cstate->minorversion); | |
610 | getattr->ga_bmval[2] &= nfsd_suppattrs2(cstate->minorversion); | |
1da177e4 | 611 | |
ca364317 | 612 | getattr->ga_fhp = &cstate->current_fh; |
1da177e4 LT |
613 | return nfs_ok; |
614 | } | |
615 | ||
7191155b | 616 | static __be32 |
ca364317 BF |
617 | nfsd4_link(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
618 | struct nfsd4_link *link) | |
1da177e4 | 619 | { |
b37ad28b | 620 | __be32 status = nfserr_nofilehandle; |
1da177e4 | 621 | |
ca364317 | 622 | if (!cstate->save_fh.fh_dentry) |
1da177e4 | 623 | return status; |
ca364317 BF |
624 | status = nfsd_link(rqstp, &cstate->current_fh, |
625 | link->li_name, link->li_namelen, &cstate->save_fh); | |
1da177e4 | 626 | if (!status) |
ca364317 | 627 | set_change_info(&link->li_cinfo, &cstate->current_fh); |
1da177e4 LT |
628 | return status; |
629 | } | |
630 | ||
0ff7ab46 | 631 | static __be32 nfsd4_do_lookupp(struct svc_rqst *rqstp, struct svc_fh *fh) |
1da177e4 LT |
632 | { |
633 | struct svc_fh tmp_fh; | |
b37ad28b | 634 | __be32 ret; |
1da177e4 LT |
635 | |
636 | fh_init(&tmp_fh, NFS4_FHSIZE); | |
df547efb BF |
637 | ret = exp_pseudoroot(rqstp, &tmp_fh); |
638 | if (ret) | |
1da177e4 | 639 | return ret; |
0ff7ab46 | 640 | if (tmp_fh.fh_dentry == fh->fh_dentry) { |
1da177e4 LT |
641 | fh_put(&tmp_fh); |
642 | return nfserr_noent; | |
643 | } | |
644 | fh_put(&tmp_fh); | |
0ff7ab46 BF |
645 | return nfsd_lookup(rqstp, fh, "..", 2, fh); |
646 | } | |
647 | ||
648 | static __be32 | |
649 | nfsd4_lookupp(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, | |
650 | void *arg) | |
651 | { | |
652 | return nfsd4_do_lookupp(rqstp, &cstate->current_fh); | |
1da177e4 LT |
653 | } |
654 | ||
7191155b | 655 | static __be32 |
ca364317 BF |
656 | nfsd4_lookup(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
657 | struct nfsd4_lookup *lookup) | |
1da177e4 | 658 | { |
ca364317 BF |
659 | return nfsd_lookup(rqstp, &cstate->current_fh, |
660 | lookup->lo_name, lookup->lo_len, | |
661 | &cstate->current_fh); | |
1da177e4 LT |
662 | } |
663 | ||
7191155b | 664 | static __be32 |
ca364317 BF |
665 | nfsd4_read(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
666 | struct nfsd4_read *read) | |
1da177e4 | 667 | { |
b37ad28b | 668 | __be32 status; |
1da177e4 LT |
669 | |
670 | /* no need to check permission - this will be done in nfsd_read() */ | |
671 | ||
7e06b7f9 | 672 | read->rd_filp = NULL; |
1da177e4 LT |
673 | if (read->rd_offset >= OFFSET_MAX) |
674 | return nfserr_inval; | |
675 | ||
676 | nfs4_lock_state(); | |
677 | /* check stateid */ | |
dd453dfd BH |
678 | if ((status = nfs4_preprocess_stateid_op(cstate, &read->rd_stateid, |
679 | RD_STATE, &read->rd_filp))) { | |
1da177e4 LT |
680 | dprintk("NFSD: nfsd4_read: couldn't process stateid!\n"); |
681 | goto out; | |
682 | } | |
7e06b7f9 N |
683 | if (read->rd_filp) |
684 | get_file(read->rd_filp); | |
1da177e4 LT |
685 | status = nfs_ok; |
686 | out: | |
687 | nfs4_unlock_state(); | |
688 | read->rd_rqstp = rqstp; | |
ca364317 | 689 | read->rd_fhp = &cstate->current_fh; |
1da177e4 LT |
690 | return status; |
691 | } | |
692 | ||
7191155b | 693 | static __be32 |
ca364317 BF |
694 | nfsd4_readdir(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
695 | struct nfsd4_readdir *readdir) | |
1da177e4 LT |
696 | { |
697 | u64 cookie = readdir->rd_cookie; | |
698 | static const nfs4_verifier zeroverf; | |
699 | ||
700 | /* no need to check permission - this will be done in nfsd_readdir() */ | |
701 | ||
702 | if (readdir->rd_bmval[1] & NFSD_WRITEONLY_ATTRS_WORD1) | |
703 | return nfserr_inval; | |
704 | ||
7e705706 AA |
705 | readdir->rd_bmval[0] &= nfsd_suppattrs0(cstate->minorversion); |
706 | readdir->rd_bmval[1] &= nfsd_suppattrs1(cstate->minorversion); | |
707 | readdir->rd_bmval[2] &= nfsd_suppattrs2(cstate->minorversion); | |
1da177e4 | 708 | |
832023bf | 709 | if ((cookie == 1) || (cookie == 2) || |
1da177e4 LT |
710 | (cookie == 0 && memcmp(readdir->rd_verf.data, zeroverf.data, NFS4_VERIFIER_SIZE))) |
711 | return nfserr_bad_cookie; | |
712 | ||
713 | readdir->rd_rqstp = rqstp; | |
ca364317 | 714 | readdir->rd_fhp = &cstate->current_fh; |
1da177e4 LT |
715 | return nfs_ok; |
716 | } | |
717 | ||
7191155b | 718 | static __be32 |
ca364317 BF |
719 | nfsd4_readlink(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
720 | struct nfsd4_readlink *readlink) | |
1da177e4 LT |
721 | { |
722 | readlink->rl_rqstp = rqstp; | |
ca364317 | 723 | readlink->rl_fhp = &cstate->current_fh; |
1da177e4 LT |
724 | return nfs_ok; |
725 | } | |
726 | ||
7191155b | 727 | static __be32 |
ca364317 BF |
728 | nfsd4_remove(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
729 | struct nfsd4_remove *remove) | |
1da177e4 | 730 | { |
b37ad28b | 731 | __be32 status; |
1da177e4 | 732 | |
af558e33 | 733 | if (locks_in_grace()) |
c815afc7 | 734 | return nfserr_grace; |
ca364317 BF |
735 | status = nfsd_unlink(rqstp, &cstate->current_fh, 0, |
736 | remove->rm_name, remove->rm_namelen); | |
1da177e4 | 737 | if (!status) { |
ca364317 BF |
738 | fh_unlock(&cstate->current_fh); |
739 | set_change_info(&remove->rm_cinfo, &cstate->current_fh); | |
1da177e4 LT |
740 | } |
741 | return status; | |
742 | } | |
743 | ||
7191155b | 744 | static __be32 |
ca364317 BF |
745 | nfsd4_rename(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
746 | struct nfsd4_rename *rename) | |
1da177e4 | 747 | { |
b37ad28b | 748 | __be32 status = nfserr_nofilehandle; |
1da177e4 | 749 | |
ca364317 | 750 | if (!cstate->save_fh.fh_dentry) |
1da177e4 | 751 | return status; |
af558e33 | 752 | if (locks_in_grace() && !(cstate->save_fh.fh_export->ex_flags |
c815afc7 N |
753 | & NFSEXP_NOSUBTREECHECK)) |
754 | return nfserr_grace; | |
ca364317 BF |
755 | status = nfsd_rename(rqstp, &cstate->save_fh, rename->rn_sname, |
756 | rename->rn_snamelen, &cstate->current_fh, | |
1da177e4 LT |
757 | rename->rn_tname, rename->rn_tnamelen); |
758 | ||
759 | /* the underlying filesystem returns different error's than required | |
760 | * by NFSv4. both save_fh and current_fh have been verified.. */ | |
761 | if (status == nfserr_isdir) | |
762 | status = nfserr_exist; | |
763 | else if ((status == nfserr_notdir) && | |
ca364317 BF |
764 | (S_ISDIR(cstate->save_fh.fh_dentry->d_inode->i_mode) && |
765 | S_ISDIR(cstate->current_fh.fh_dentry->d_inode->i_mode))) | |
1da177e4 | 766 | status = nfserr_exist; |
1da177e4 LT |
767 | |
768 | if (!status) { | |
ca364317 BF |
769 | set_change_info(&rename->rn_sinfo, &cstate->current_fh); |
770 | set_change_info(&rename->rn_tinfo, &cstate->save_fh); | |
1da177e4 LT |
771 | } |
772 | return status; | |
773 | } | |
774 | ||
dcb488a3 AA |
775 | static __be32 |
776 | nfsd4_secinfo(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, | |
777 | struct nfsd4_secinfo *secinfo) | |
778 | { | |
779 | struct svc_fh resfh; | |
780 | struct svc_export *exp; | |
781 | struct dentry *dentry; | |
782 | __be32 err; | |
783 | ||
784 | fh_init(&resfh, NFS4_FHSIZE); | |
29a78a3e BF |
785 | err = fh_verify(rqstp, &cstate->current_fh, S_IFDIR, NFSD_MAY_EXEC); |
786 | if (err) | |
787 | return err; | |
dcb488a3 AA |
788 | err = nfsd_lookup_dentry(rqstp, &cstate->current_fh, |
789 | secinfo->si_name, secinfo->si_namelen, | |
790 | &exp, &dentry); | |
791 | if (err) | |
792 | return err; | |
793 | if (dentry->d_inode == NULL) { | |
794 | exp_put(exp); | |
795 | err = nfserr_noent; | |
796 | } else | |
797 | secinfo->si_exp = exp; | |
798 | dput(dentry); | |
56560b9a BF |
799 | if (cstate->minorversion) |
800 | /* See rfc 5661 section 2.6.3.1.1.8 */ | |
801 | fh_put(&cstate->current_fh); | |
dcb488a3 AA |
802 | return err; |
803 | } | |
804 | ||
04f4ad16 BF |
805 | static __be32 |
806 | nfsd4_secinfo_no_name(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, | |
807 | struct nfsd4_secinfo_no_name *sin) | |
808 | { | |
809 | __be32 err; | |
810 | ||
811 | switch (sin->sin_style) { | |
812 | case NFS4_SECINFO_STYLE4_CURRENT_FH: | |
813 | break; | |
814 | case NFS4_SECINFO_STYLE4_PARENT: | |
815 | err = nfsd4_do_lookupp(rqstp, &cstate->current_fh); | |
816 | if (err) | |
817 | return err; | |
818 | break; | |
819 | default: | |
820 | return nfserr_inval; | |
821 | } | |
822 | exp_get(cstate->current_fh.fh_export); | |
823 | sin->sin_exp = cstate->current_fh.fh_export; | |
824 | fh_put(&cstate->current_fh); | |
825 | return nfs_ok; | |
826 | } | |
827 | ||
7191155b | 828 | static __be32 |
ca364317 BF |
829 | nfsd4_setattr(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
830 | struct nfsd4_setattr *setattr) | |
1da177e4 | 831 | { |
b37ad28b | 832 | __be32 status = nfs_ok; |
1da177e4 | 833 | |
1da177e4 LT |
834 | if (setattr->sa_iattr.ia_valid & ATTR_SIZE) { |
835 | nfs4_lock_state(); | |
dd453dfd | 836 | status = nfs4_preprocess_stateid_op(cstate, |
6150ef0d | 837 | &setattr->sa_stateid, WR_STATE, NULL); |
1da177e4 | 838 | nfs4_unlock_state(); |
375c5547 | 839 | if (status) { |
3e3b4800 | 840 | dprintk("NFSD: nfsd4_setattr: couldn't process stateid!\n"); |
375c5547 BF |
841 | return status; |
842 | } | |
1da177e4 | 843 | } |
18f335af DH |
844 | status = mnt_want_write(cstate->current_fh.fh_export->ex_path.mnt); |
845 | if (status) | |
846 | return status; | |
1da177e4 | 847 | status = nfs_ok; |
3c8e0316 YZ |
848 | |
849 | status = check_attr_support(rqstp, cstate, setattr->sa_bmval, | |
850 | nfsd_attrmask); | |
851 | if (status) | |
852 | goto out; | |
853 | ||
1da177e4 | 854 | if (setattr->sa_acl != NULL) |
ca364317 BF |
855 | status = nfsd4_set_nfs4_acl(rqstp, &cstate->current_fh, |
856 | setattr->sa_acl); | |
1da177e4 | 857 | if (status) |
18f335af | 858 | goto out; |
ca364317 | 859 | status = nfsd_setattr(rqstp, &cstate->current_fh, &setattr->sa_iattr, |
1da177e4 | 860 | 0, (time_t)0); |
18f335af DH |
861 | out: |
862 | mnt_drop_write(cstate->current_fh.fh_export->ex_path.mnt); | |
1da177e4 LT |
863 | return status; |
864 | } | |
865 | ||
7191155b | 866 | static __be32 |
ca364317 BF |
867 | nfsd4_write(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
868 | struct nfsd4_write *write) | |
1da177e4 LT |
869 | { |
870 | stateid_t *stateid = &write->wr_stateid; | |
871 | struct file *filp = NULL; | |
872 | u32 *p; | |
b37ad28b | 873 | __be32 status = nfs_ok; |
31dec253 | 874 | unsigned long cnt; |
1da177e4 LT |
875 | |
876 | /* no need to check permission - this will be done in nfsd_write() */ | |
877 | ||
878 | if (write->wr_offset >= OFFSET_MAX) | |
879 | return nfserr_inval; | |
880 | ||
881 | nfs4_lock_state(); | |
dd453dfd | 882 | status = nfs4_preprocess_stateid_op(cstate, stateid, WR_STATE, &filp); |
7e06b7f9 N |
883 | if (filp) |
884 | get_file(filp); | |
1da177e4 LT |
885 | nfs4_unlock_state(); |
886 | ||
375c5547 BF |
887 | if (status) { |
888 | dprintk("NFSD: nfsd4_write: couldn't process stateid!\n"); | |
889 | return status; | |
890 | } | |
891 | ||
31dec253 | 892 | cnt = write->wr_buflen; |
1da177e4 LT |
893 | write->wr_how_written = write->wr_stable_how; |
894 | p = (u32 *)write->wr_verifier.data; | |
895 | *p++ = nfssvc_boot.tv_sec; | |
896 | *p++ = nfssvc_boot.tv_usec; | |
897 | ||
ca364317 BF |
898 | status = nfsd_write(rqstp, &cstate->current_fh, filp, |
899 | write->wr_offset, rqstp->rq_vec, write->wr_vlen, | |
31dec253 | 900 | &cnt, &write->wr_how_written); |
7e06b7f9 N |
901 | if (filp) |
902 | fput(filp); | |
1da177e4 | 903 | |
31dec253 DS |
904 | write->wr_bytes_written = cnt; |
905 | ||
1da177e4 | 906 | return status; |
1da177e4 LT |
907 | } |
908 | ||
909 | /* This routine never returns NFS_OK! If there are no other errors, it | |
910 | * will return NFSERR_SAME or NFSERR_NOT_SAME depending on whether the | |
911 | * attributes matched. VERIFY is implemented by mapping NFSERR_SAME | |
912 | * to NFS_OK after the call; NVERIFY by mapping NFSERR_NOT_SAME to NFS_OK. | |
913 | */ | |
b37ad28b | 914 | static __be32 |
c954e2a5 | 915 | _nfsd4_verify(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
ca364317 | 916 | struct nfsd4_verify *verify) |
1da177e4 | 917 | { |
2ebbc012 | 918 | __be32 *buf, *p; |
1da177e4 | 919 | int count; |
b37ad28b | 920 | __be32 status; |
1da177e4 | 921 | |
8837abca | 922 | status = fh_verify(rqstp, &cstate->current_fh, 0, NFSD_MAY_NOP); |
1da177e4 LT |
923 | if (status) |
924 | return status; | |
925 | ||
3c8e0316 YZ |
926 | status = check_attr_support(rqstp, cstate, verify->ve_bmval, NULL); |
927 | if (status) | |
928 | return status; | |
929 | ||
1da177e4 LT |
930 | if ((verify->ve_bmval[0] & FATTR4_WORD0_RDATTR_ERROR) |
931 | || (verify->ve_bmval[1] & NFSD_WRITEONLY_ATTRS_WORD1)) | |
932 | return nfserr_inval; | |
933 | if (verify->ve_attrlen & 3) | |
934 | return nfserr_inval; | |
935 | ||
936 | /* count in words: | |
937 | * bitmap_len(1) + bitmap(2) + attr_len(1) = 4 | |
938 | */ | |
939 | count = 4 + (verify->ve_attrlen >> 2); | |
940 | buf = kmalloc(count << 2, GFP_KERNEL); | |
941 | if (!buf) | |
3e772463 | 942 | return nfserr_jukebox; |
1da177e4 | 943 | |
ca364317 BF |
944 | status = nfsd4_encode_fattr(&cstate->current_fh, |
945 | cstate->current_fh.fh_export, | |
946 | cstate->current_fh.fh_dentry, buf, | |
1da177e4 | 947 | &count, verify->ve_bmval, |
406a7ea9 | 948 | rqstp, 0); |
1da177e4 LT |
949 | |
950 | /* this means that nfsd4_encode_fattr() ran out of space */ | |
951 | if (status == nfserr_resource && count == 0) | |
952 | status = nfserr_not_same; | |
953 | if (status) | |
954 | goto out_kfree; | |
955 | ||
95ec28cd BH |
956 | /* skip bitmap */ |
957 | p = buf + 1 + ntohl(buf[0]); | |
1da177e4 LT |
958 | status = nfserr_not_same; |
959 | if (ntohl(*p++) != verify->ve_attrlen) | |
960 | goto out_kfree; | |
961 | if (!memcmp(p, verify->ve_attrval, verify->ve_attrlen)) | |
962 | status = nfserr_same; | |
963 | ||
964 | out_kfree: | |
965 | kfree(buf); | |
966 | return status; | |
967 | } | |
968 | ||
c954e2a5 BF |
969 | static __be32 |
970 | nfsd4_nverify(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, | |
971 | struct nfsd4_verify *verify) | |
972 | { | |
973 | __be32 status; | |
974 | ||
975 | status = _nfsd4_verify(rqstp, cstate, verify); | |
976 | return status == nfserr_not_same ? nfs_ok : status; | |
977 | } | |
978 | ||
979 | static __be32 | |
980 | nfsd4_verify(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, | |
981 | struct nfsd4_verify *verify) | |
982 | { | |
983 | __be32 status; | |
984 | ||
985 | status = _nfsd4_verify(rqstp, cstate, verify); | |
986 | return status == nfserr_same ? nfs_ok : status; | |
987 | } | |
988 | ||
1da177e4 LT |
989 | /* |
990 | * NULL call. | |
991 | */ | |
7111c66e | 992 | static __be32 |
1da177e4 LT |
993 | nfsd4_proc_null(struct svc_rqst *rqstp, void *argp, void *resp) |
994 | { | |
995 | return nfs_ok; | |
996 | } | |
997 | ||
e2b20950 SA |
998 | static inline void nfsd4_increment_op_stats(u32 opnum) |
999 | { | |
1000 | if (opnum >= FIRST_NFS4_OP && opnum <= LAST_NFS4_OP) | |
1001 | nfsdstats.nfs4_opcount[opnum]++; | |
1002 | } | |
1003 | ||
b591480b BF |
1004 | typedef __be32(*nfsd4op_func)(struct svc_rqst *, struct nfsd4_compound_state *, |
1005 | void *); | |
f9bb94c4 AA |
1006 | enum nfsd4_op_flags { |
1007 | ALLOWED_WITHOUT_FH = 1 << 0, /* No current filehandle required */ | |
5ece3caf MJ |
1008 | ALLOWED_ON_ABSENT_FS = 1 << 1, /* ops processed on absent fs */ |
1009 | ALLOWED_AS_FIRST_OP = 1 << 2, /* ops reqired first in compound */ | |
68d93184 BF |
1010 | /* For rfc 5661 section 2.6.3.1.1: */ |
1011 | OP_HANDLES_WRONGSEC = 1 << 3, | |
1012 | OP_IS_PUTFH_LIKE = 1 << 4, | |
f9bb94c4 | 1013 | }; |
b591480b BF |
1014 | |
1015 | struct nfsd4_operation { | |
1016 | nfsd4op_func op_func; | |
1017 | u32 op_flags; | |
b001a1b6 | 1018 | char *op_name; |
1091006c BF |
1019 | /* |
1020 | * We use the DRC for compounds containing non-idempotent | |
1021 | * operations, *except* those that are 4.1-specific (since | |
1022 | * sessions provide their own EOS), and except for stateful | |
1023 | * operations other than setclientid and setclientid_confirm | |
1024 | * (since sequence numbers provide EOS for open, lock, etc in | |
1025 | * the v4.0 case). | |
1026 | */ | |
1027 | bool op_cacheresult; | |
b591480b BF |
1028 | }; |
1029 | ||
1030 | static struct nfsd4_operation nfsd4_ops[]; | |
1031 | ||
f1c7f79b | 1032 | static const char *nfsd4_op_name(unsigned opnum); |
b001a1b6 | 1033 | |
f9bb94c4 | 1034 | /* |
57716355 | 1035 | * Enforce NFSv4.1 COMPOUND ordering rules: |
f9bb94c4 | 1036 | * |
57716355 BF |
1037 | * Also note, enforced elsewhere: |
1038 | * - SEQUENCE other than as first op results in | |
1039 | * NFS4ERR_SEQUENCE_POS. (Enforced in nfsd4_sequence().) | |
1d1bc8f2 BF |
1040 | * - BIND_CONN_TO_SESSION must be the only op in its compound. |
1041 | * (Enforced in nfsd4_bind_conn_to_session().) | |
57716355 BF |
1042 | * - DESTROY_SESSION must be the final operation in a compound, if |
1043 | * sessionid's in SEQUENCE and DESTROY_SESSION are the same. | |
1044 | * (Enforced in nfsd4_destroy_session().) | |
f9bb94c4 | 1045 | */ |
57716355 | 1046 | static __be32 nfs41_check_op_ordering(struct nfsd4_compoundargs *args) |
f9bb94c4 | 1047 | { |
57716355 BF |
1048 | struct nfsd4_op *op = &args->ops[0]; |
1049 | ||
1050 | /* These ordering requirements don't apply to NFSv4.0: */ | |
1051 | if (args->minorversion == 0) | |
1052 | return nfs_ok; | |
1053 | /* This is weird, but OK, not our problem: */ | |
1054 | if (args->opcnt == 0) | |
1055 | return nfs_ok; | |
1056 | if (op->status == nfserr_op_illegal) | |
1057 | return nfs_ok; | |
1058 | if (!(nfsd4_ops[op->opnum].op_flags & ALLOWED_AS_FIRST_OP)) | |
1059 | return nfserr_op_not_in_session; | |
1060 | if (op->opnum == OP_SEQUENCE) | |
1061 | return nfs_ok; | |
1062 | if (args->opcnt != 1) | |
1063 | return nfserr_not_only_op; | |
1064 | return nfs_ok; | |
f9bb94c4 AA |
1065 | } |
1066 | ||
22b03214 BF |
1067 | static inline struct nfsd4_operation *OPDESC(struct nfsd4_op *op) |
1068 | { | |
1069 | return &nfsd4_ops[op->opnum]; | |
1070 | } | |
1071 | ||
1091006c BF |
1072 | bool nfsd4_cache_this_op(struct nfsd4_op *op) |
1073 | { | |
1074 | return OPDESC(op)->op_cacheresult; | |
1075 | } | |
1076 | ||
68d93184 BF |
1077 | static bool need_wrongsec_check(struct svc_rqst *rqstp) |
1078 | { | |
1079 | struct nfsd4_compoundres *resp = rqstp->rq_resp; | |
1080 | struct nfsd4_compoundargs *argp = rqstp->rq_argp; | |
1081 | struct nfsd4_op *this = &argp->ops[resp->opcnt - 1]; | |
1082 | struct nfsd4_op *next = &argp->ops[resp->opcnt]; | |
1083 | struct nfsd4_operation *thisd; | |
1084 | struct nfsd4_operation *nextd; | |
1085 | ||
1086 | thisd = OPDESC(this); | |
1087 | /* | |
1088 | * Most ops check wronsec on our own; only the putfh-like ops | |
1089 | * have special rules. | |
1090 | */ | |
1091 | if (!(thisd->op_flags & OP_IS_PUTFH_LIKE)) | |
1092 | return false; | |
1093 | /* | |
1094 | * rfc 5661 2.6.3.1.1.6: don't bother erroring out a | |
1095 | * put-filehandle operation if we're not going to use the | |
1096 | * result: | |
1097 | */ | |
1098 | if (argp->opcnt == resp->opcnt) | |
1099 | return false; | |
1100 | ||
1101 | nextd = OPDESC(next); | |
1102 | /* | |
1103 | * Rest of 2.6.3.1.1: certain operations will return WRONGSEC | |
1104 | * errors themselves as necessary; others should check for them | |
1105 | * now: | |
1106 | */ | |
1107 | return !(nextd->op_flags & OP_HANDLES_WRONGSEC); | |
1108 | } | |
1109 | ||
1da177e4 LT |
1110 | /* |
1111 | * COMPOUND call. | |
1112 | */ | |
7111c66e | 1113 | static __be32 |
1da177e4 LT |
1114 | nfsd4_proc_compound(struct svc_rqst *rqstp, |
1115 | struct nfsd4_compoundargs *args, | |
1116 | struct nfsd4_compoundres *resp) | |
1117 | { | |
1118 | struct nfsd4_op *op; | |
b591480b | 1119 | struct nfsd4_operation *opdesc; |
e354d571 | 1120 | struct nfsd4_compound_state *cstate = &resp->cstate; |
e5710199 | 1121 | int slack_bytes; |
b37ad28b | 1122 | __be32 status; |
1da177e4 | 1123 | |
1da177e4 | 1124 | resp->xbuf = &rqstp->rq_res; |
e354d571 AA |
1125 | resp->p = rqstp->rq_res.head[0].iov_base + |
1126 | rqstp->rq_res.head[0].iov_len; | |
1da177e4 LT |
1127 | resp->tagp = resp->p; |
1128 | /* reserve space for: taglen, tag, and opcnt */ | |
1129 | resp->p += 2 + XDR_QUADLEN(args->taglen); | |
1130 | resp->end = rqstp->rq_res.head[0].iov_base + PAGE_SIZE; | |
1131 | resp->taglen = args->taglen; | |
1132 | resp->tag = args->tag; | |
1133 | resp->opcnt = 0; | |
1134 | resp->rqstp = rqstp; | |
d87a8ade | 1135 | resp->cstate.minorversion = args->minorversion; |
e354d571 | 1136 | resp->cstate.replay_owner = NULL; |
26c0c75e | 1137 | resp->cstate.session = NULL; |
e354d571 AA |
1138 | fh_init(&resp->cstate.current_fh, NFS4_FHSIZE); |
1139 | fh_init(&resp->cstate.save_fh, NFS4_FHSIZE); | |
8ff30fa4 N |
1140 | /* |
1141 | * Don't use the deferral mechanism for NFSv4; compounds make it | |
1142 | * too hard to avoid non-idempotency problems. | |
1143 | */ | |
1144 | rqstp->rq_usedeferral = 0; | |
1da177e4 LT |
1145 | |
1146 | /* | |
1147 | * According to RFC3010, this takes precedence over all other errors. | |
1148 | */ | |
1149 | status = nfserr_minor_vers_mismatch; | |
8daf220a | 1150 | if (args->minorversion > nfsd_supported_minorversion) |
1da177e4 LT |
1151 | goto out; |
1152 | ||
57716355 BF |
1153 | status = nfs41_check_op_ordering(args); |
1154 | if (status) { | |
f9bb94c4 | 1155 | op = &args->ops[0]; |
57716355 | 1156 | op->status = status; |
f9bb94c4 AA |
1157 | goto encode_op; |
1158 | } | |
1159 | ||
1da177e4 LT |
1160 | while (!status && resp->opcnt < args->opcnt) { |
1161 | op = &args->ops[resp->opcnt++]; | |
1162 | ||
b001a1b6 BH |
1163 | dprintk("nfsv4 compound op #%d/%d: %d (%s)\n", |
1164 | resp->opcnt, args->opcnt, op->opnum, | |
1165 | nfsd4_op_name(op->opnum)); | |
1da177e4 LT |
1166 | /* |
1167 | * The XDR decode routines may have pre-set op->status; | |
1168 | * for example, if there is a miscellaneous XDR error | |
1169 | * it will be set to nfserr_bad_xdr. | |
1170 | */ | |
1171 | if (op->status) | |
1172 | goto encode_op; | |
1173 | ||
1174 | /* We must be able to encode a successful response to | |
1175 | * this operation, with enough room left over to encode a | |
1176 | * failed response to the next operation. If we don't | |
1177 | * have enough room, fail with ERR_RESOURCE. | |
1178 | */ | |
e5710199 BF |
1179 | slack_bytes = (char *)resp->end - (char *)resp->p; |
1180 | if (slack_bytes < COMPOUND_SLACK_SPACE | |
1181 | + COMPOUND_ERR_SLACK_SPACE) { | |
1182 | BUG_ON(slack_bytes < COMPOUND_ERR_SLACK_SPACE); | |
1da177e4 LT |
1183 | op->status = nfserr_resource; |
1184 | goto encode_op; | |
1185 | } | |
1186 | ||
22b03214 | 1187 | opdesc = OPDESC(op); |
b591480b | 1188 | |
ca364317 | 1189 | if (!cstate->current_fh.fh_dentry) { |
27d630ec | 1190 | if (!(opdesc->op_flags & ALLOWED_WITHOUT_FH)) { |
42ca0993 BF |
1191 | op->status = nfserr_nofilehandle; |
1192 | goto encode_op; | |
1193 | } | |
eeac294e BF |
1194 | } else if (cstate->current_fh.fh_export->ex_fslocs.migrated && |
1195 | !(opdesc->op_flags & ALLOWED_ON_ABSENT_FS)) { | |
42ca0993 | 1196 | op->status = nfserr_moved; |
1da177e4 LT |
1197 | goto encode_op; |
1198 | } | |
b591480b BF |
1199 | |
1200 | if (opdesc->op_func) | |
1201 | op->status = opdesc->op_func(rqstp, cstate, &op->u); | |
1202 | else | |
1da177e4 | 1203 | BUG_ON(op->status == nfs_ok); |
1da177e4 | 1204 | |
68d93184 BF |
1205 | if (!op->status && need_wrongsec_check(rqstp)) |
1206 | op->status = check_nfsd_access(cstate->current_fh.fh_export, rqstp); | |
1207 | ||
1da177e4 | 1208 | encode_op: |
49557cc7 | 1209 | /* Only from SEQUENCE */ |
da3846a2 AA |
1210 | if (resp->cstate.status == nfserr_replay_cache) { |
1211 | dprintk("%s NFS4.1 replay from cache\n", __func__); | |
abfabf8c | 1212 | status = op->status; |
da3846a2 AA |
1213 | goto out; |
1214 | } | |
a90b061c | 1215 | if (op->status == nfserr_replay_me) { |
a4f1706a | 1216 | op->replay = &cstate->replay_owner->so_replay; |
1da177e4 LT |
1217 | nfsd4_encode_replay(resp, op); |
1218 | status = op->status = op->replay->rp_status; | |
1219 | } else { | |
1220 | nfsd4_encode_operation(resp, op); | |
1221 | status = op->status; | |
1222 | } | |
0407717d BH |
1223 | |
1224 | dprintk("nfsv4 compound op %p opcnt %d #%d: %d: status %d\n", | |
1225 | args->ops, args->opcnt, resp->opcnt, op->opnum, | |
1226 | be32_to_cpu(status)); | |
1227 | ||
a4f1706a | 1228 | if (cstate->replay_owner) { |
5ec094c1 | 1229 | nfs4_unlock_state(); |
a4f1706a | 1230 | cstate->replay_owner = NULL; |
1da177e4 | 1231 | } |
7e06b7f9 N |
1232 | /* XXX Ugh, we need to get rid of this kind of special case: */ |
1233 | if (op->opnum == OP_READ && op->u.read.rd_filp) | |
1234 | fput(op->u.read.rd_filp); | |
e2b20950 SA |
1235 | |
1236 | nfsd4_increment_op_stats(op->opnum); | |
1da177e4 LT |
1237 | } |
1238 | ||
da3846a2 | 1239 | resp->cstate.status = status; |
e354d571 AA |
1240 | fh_put(&resp->cstate.current_fh); |
1241 | fh_put(&resp->cstate.save_fh); | |
1242 | BUG_ON(resp->cstate.replay_owner); | |
1da177e4 | 1243 | out: |
2f425878 AA |
1244 | /* Reset deferral mechanism for RPC deferrals */ |
1245 | rqstp->rq_usedeferral = 1; | |
3b12cd98 | 1246 | dprintk("nfsv4 compound returned %d\n", ntohl(status)); |
1da177e4 LT |
1247 | return status; |
1248 | } | |
1249 | ||
20766016 | 1250 | static struct nfsd4_operation nfsd4_ops[] = { |
b591480b BF |
1251 | [OP_ACCESS] = { |
1252 | .op_func = (nfsd4op_func)nfsd4_access, | |
b001a1b6 | 1253 | .op_name = "OP_ACCESS", |
b591480b BF |
1254 | }, |
1255 | [OP_CLOSE] = { | |
1256 | .op_func = (nfsd4op_func)nfsd4_close, | |
b001a1b6 | 1257 | .op_name = "OP_CLOSE", |
b591480b BF |
1258 | }, |
1259 | [OP_COMMIT] = { | |
1260 | .op_func = (nfsd4op_func)nfsd4_commit, | |
b001a1b6 | 1261 | .op_name = "OP_COMMIT", |
b591480b BF |
1262 | }, |
1263 | [OP_CREATE] = { | |
1264 | .op_func = (nfsd4op_func)nfsd4_create, | |
b001a1b6 | 1265 | .op_name = "OP_CREATE", |
1091006c | 1266 | .op_cacheresult = true, |
b591480b BF |
1267 | }, |
1268 | [OP_DELEGRETURN] = { | |
1269 | .op_func = (nfsd4op_func)nfsd4_delegreturn, | |
b001a1b6 | 1270 | .op_name = "OP_DELEGRETURN", |
b591480b BF |
1271 | }, |
1272 | [OP_GETATTR] = { | |
1273 | .op_func = (nfsd4op_func)nfsd4_getattr, | |
eeac294e | 1274 | .op_flags = ALLOWED_ON_ABSENT_FS, |
b001a1b6 | 1275 | .op_name = "OP_GETATTR", |
b591480b BF |
1276 | }, |
1277 | [OP_GETFH] = { | |
1278 | .op_func = (nfsd4op_func)nfsd4_getfh, | |
b001a1b6 | 1279 | .op_name = "OP_GETFH", |
b591480b BF |
1280 | }, |
1281 | [OP_LINK] = { | |
1282 | .op_func = (nfsd4op_func)nfsd4_link, | |
b001a1b6 | 1283 | .op_name = "OP_LINK", |
1091006c | 1284 | .op_cacheresult = true, |
b591480b BF |
1285 | }, |
1286 | [OP_LOCK] = { | |
1287 | .op_func = (nfsd4op_func)nfsd4_lock, | |
b001a1b6 | 1288 | .op_name = "OP_LOCK", |
b591480b BF |
1289 | }, |
1290 | [OP_LOCKT] = { | |
1291 | .op_func = (nfsd4op_func)nfsd4_lockt, | |
b001a1b6 | 1292 | .op_name = "OP_LOCKT", |
b591480b BF |
1293 | }, |
1294 | [OP_LOCKU] = { | |
1295 | .op_func = (nfsd4op_func)nfsd4_locku, | |
b001a1b6 | 1296 | .op_name = "OP_LOCKU", |
b591480b BF |
1297 | }, |
1298 | [OP_LOOKUP] = { | |
1299 | .op_func = (nfsd4op_func)nfsd4_lookup, | |
68d93184 | 1300 | .op_flags = OP_HANDLES_WRONGSEC, |
b001a1b6 | 1301 | .op_name = "OP_LOOKUP", |
b591480b BF |
1302 | }, |
1303 | [OP_LOOKUPP] = { | |
1304 | .op_func = (nfsd4op_func)nfsd4_lookupp, | |
68d93184 | 1305 | .op_flags = OP_HANDLES_WRONGSEC, |
b001a1b6 | 1306 | .op_name = "OP_LOOKUPP", |
b591480b BF |
1307 | }, |
1308 | [OP_NVERIFY] = { | |
1309 | .op_func = (nfsd4op_func)nfsd4_nverify, | |
b001a1b6 | 1310 | .op_name = "OP_NVERIFY", |
b591480b BF |
1311 | }, |
1312 | [OP_OPEN] = { | |
1313 | .op_func = (nfsd4op_func)nfsd4_open, | |
68d93184 | 1314 | .op_flags = OP_HANDLES_WRONGSEC, |
b001a1b6 | 1315 | .op_name = "OP_OPEN", |
b591480b BF |
1316 | }, |
1317 | [OP_OPEN_CONFIRM] = { | |
1318 | .op_func = (nfsd4op_func)nfsd4_open_confirm, | |
b001a1b6 | 1319 | .op_name = "OP_OPEN_CONFIRM", |
b591480b BF |
1320 | }, |
1321 | [OP_OPEN_DOWNGRADE] = { | |
1322 | .op_func = (nfsd4op_func)nfsd4_open_downgrade, | |
b001a1b6 | 1323 | .op_name = "OP_OPEN_DOWNGRADE", |
b591480b BF |
1324 | }, |
1325 | [OP_PUTFH] = { | |
1326 | .op_func = (nfsd4op_func)nfsd4_putfh, | |
68d93184 BF |
1327 | .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS |
1328 | | OP_IS_PUTFH_LIKE, | |
b001a1b6 | 1329 | .op_name = "OP_PUTFH", |
b591480b | 1330 | }, |
eeac294e | 1331 | [OP_PUTPUBFH] = { |
a1c8c4d1 | 1332 | .op_func = (nfsd4op_func)nfsd4_putrootfh, |
68d93184 BF |
1333 | .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS |
1334 | | OP_IS_PUTFH_LIKE, | |
b001a1b6 | 1335 | .op_name = "OP_PUTPUBFH", |
eeac294e | 1336 | }, |
b591480b BF |
1337 | [OP_PUTROOTFH] = { |
1338 | .op_func = (nfsd4op_func)nfsd4_putrootfh, | |
68d93184 BF |
1339 | .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS |
1340 | | OP_IS_PUTFH_LIKE, | |
b001a1b6 | 1341 | .op_name = "OP_PUTROOTFH", |
b591480b BF |
1342 | }, |
1343 | [OP_READ] = { | |
1344 | .op_func = (nfsd4op_func)nfsd4_read, | |
b001a1b6 | 1345 | .op_name = "OP_READ", |
b591480b BF |
1346 | }, |
1347 | [OP_READDIR] = { | |
1348 | .op_func = (nfsd4op_func)nfsd4_readdir, | |
b001a1b6 | 1349 | .op_name = "OP_READDIR", |
b591480b BF |
1350 | }, |
1351 | [OP_READLINK] = { | |
1352 | .op_func = (nfsd4op_func)nfsd4_readlink, | |
b001a1b6 | 1353 | .op_name = "OP_READLINK", |
b591480b BF |
1354 | }, |
1355 | [OP_REMOVE] = { | |
1356 | .op_func = (nfsd4op_func)nfsd4_remove, | |
b001a1b6 | 1357 | .op_name = "OP_REMOVE", |
1091006c | 1358 | .op_cacheresult = true, |
b591480b BF |
1359 | }, |
1360 | [OP_RENAME] = { | |
b001a1b6 | 1361 | .op_name = "OP_RENAME", |
b591480b | 1362 | .op_func = (nfsd4op_func)nfsd4_rename, |
1091006c | 1363 | .op_cacheresult = true, |
b591480b BF |
1364 | }, |
1365 | [OP_RENEW] = { | |
1366 | .op_func = (nfsd4op_func)nfsd4_renew, | |
27d630ec | 1367 | .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS, |
b001a1b6 | 1368 | .op_name = "OP_RENEW", |
b591480b BF |
1369 | }, |
1370 | [OP_RESTOREFH] = { | |
1371 | .op_func = (nfsd4op_func)nfsd4_restorefh, | |
68d93184 BF |
1372 | .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS |
1373 | | OP_IS_PUTFH_LIKE, | |
b001a1b6 | 1374 | .op_name = "OP_RESTOREFH", |
b591480b BF |
1375 | }, |
1376 | [OP_SAVEFH] = { | |
1377 | .op_func = (nfsd4op_func)nfsd4_savefh, | |
68d93184 | 1378 | .op_flags = OP_HANDLES_WRONGSEC, |
b001a1b6 | 1379 | .op_name = "OP_SAVEFH", |
b591480b | 1380 | }, |
dcb488a3 AA |
1381 | [OP_SECINFO] = { |
1382 | .op_func = (nfsd4op_func)nfsd4_secinfo, | |
68d93184 | 1383 | .op_flags = OP_HANDLES_WRONGSEC, |
b001a1b6 | 1384 | .op_name = "OP_SECINFO", |
dcb488a3 | 1385 | }, |
b591480b BF |
1386 | [OP_SETATTR] = { |
1387 | .op_func = (nfsd4op_func)nfsd4_setattr, | |
b001a1b6 | 1388 | .op_name = "OP_SETATTR", |
1091006c | 1389 | .op_cacheresult = true, |
b591480b BF |
1390 | }, |
1391 | [OP_SETCLIENTID] = { | |
1392 | .op_func = (nfsd4op_func)nfsd4_setclientid, | |
27d630ec | 1393 | .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS, |
b001a1b6 | 1394 | .op_name = "OP_SETCLIENTID", |
1091006c | 1395 | .op_cacheresult = true, |
b591480b BF |
1396 | }, |
1397 | [OP_SETCLIENTID_CONFIRM] = { | |
1398 | .op_func = (nfsd4op_func)nfsd4_setclientid_confirm, | |
27d630ec | 1399 | .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS, |
b001a1b6 | 1400 | .op_name = "OP_SETCLIENTID_CONFIRM", |
1091006c | 1401 | .op_cacheresult = true, |
b591480b BF |
1402 | }, |
1403 | [OP_VERIFY] = { | |
1404 | .op_func = (nfsd4op_func)nfsd4_verify, | |
b001a1b6 | 1405 | .op_name = "OP_VERIFY", |
b591480b BF |
1406 | }, |
1407 | [OP_WRITE] = { | |
1408 | .op_func = (nfsd4op_func)nfsd4_write, | |
b001a1b6 | 1409 | .op_name = "OP_WRITE", |
1091006c | 1410 | .op_cacheresult = true, |
b591480b BF |
1411 | }, |
1412 | [OP_RELEASE_LOCKOWNER] = { | |
1413 | .op_func = (nfsd4op_func)nfsd4_release_lockowner, | |
27d630ec | 1414 | .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS, |
b001a1b6 | 1415 | .op_name = "OP_RELEASE_LOCKOWNER", |
b591480b | 1416 | }, |
069b6ad4 AA |
1417 | |
1418 | /* NFSv4.1 operations */ | |
1419 | [OP_EXCHANGE_ID] = { | |
1420 | .op_func = (nfsd4op_func)nfsd4_exchange_id, | |
f9bb94c4 | 1421 | .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP, |
069b6ad4 AA |
1422 | .op_name = "OP_EXCHANGE_ID", |
1423 | }, | |
1d1bc8f2 BF |
1424 | [OP_BIND_CONN_TO_SESSION] = { |
1425 | .op_func = (nfsd4op_func)nfsd4_bind_conn_to_session, | |
1426 | .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP, | |
1427 | .op_name = "OP_BIND_CONN_TO_SESSION", | |
1428 | }, | |
069b6ad4 AA |
1429 | [OP_CREATE_SESSION] = { |
1430 | .op_func = (nfsd4op_func)nfsd4_create_session, | |
f9bb94c4 | 1431 | .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP, |
069b6ad4 AA |
1432 | .op_name = "OP_CREATE_SESSION", |
1433 | }, | |
1434 | [OP_DESTROY_SESSION] = { | |
1435 | .op_func = (nfsd4op_func)nfsd4_destroy_session, | |
f9bb94c4 | 1436 | .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP, |
069b6ad4 AA |
1437 | .op_name = "OP_DESTROY_SESSION", |
1438 | }, | |
1439 | [OP_SEQUENCE] = { | |
1440 | .op_func = (nfsd4op_func)nfsd4_sequence, | |
f9bb94c4 | 1441 | .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP, |
069b6ad4 AA |
1442 | .op_name = "OP_SEQUENCE", |
1443 | }, | |
094b5d74 BH |
1444 | [OP_DESTROY_CLIENTID] = { |
1445 | .op_func = NULL, | |
1446 | .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP, | |
1447 | .op_name = "OP_DESTROY_CLIENTID", | |
1448 | }, | |
4dc6ec00 BF |
1449 | [OP_RECLAIM_COMPLETE] = { |
1450 | .op_func = (nfsd4op_func)nfsd4_reclaim_complete, | |
1451 | .op_flags = ALLOWED_WITHOUT_FH, | |
1452 | .op_name = "OP_RECLAIM_COMPLETE", | |
1453 | }, | |
04f4ad16 BF |
1454 | [OP_SECINFO_NO_NAME] = { |
1455 | .op_func = (nfsd4op_func)nfsd4_secinfo_no_name, | |
68d93184 | 1456 | .op_flags = OP_HANDLES_WRONGSEC, |
04f4ad16 BF |
1457 | .op_name = "OP_SECINFO_NO_NAME", |
1458 | }, | |
17456804 BS |
1459 | [OP_TEST_STATEID] = { |
1460 | .op_func = (nfsd4op_func)nfsd4_test_stateid, | |
1461 | .op_flags = ALLOWED_WITHOUT_FH, | |
1462 | .op_name = "OP_TEST_STATEID", | |
1463 | }, | |
e1ca12df BS |
1464 | [OP_FREE_STATEID] = { |
1465 | .op_func = (nfsd4op_func)nfsd4_free_stateid, | |
1466 | .op_flags = ALLOWED_WITHOUT_FH, | |
1467 | .op_name = "OP_FREE_STATEID", | |
1468 | }, | |
b591480b BF |
1469 | }; |
1470 | ||
f1c7f79b | 1471 | static const char *nfsd4_op_name(unsigned opnum) |
b001a1b6 BH |
1472 | { |
1473 | if (opnum < ARRAY_SIZE(nfsd4_ops)) | |
1474 | return nfsd4_ops[opnum].op_name; | |
1475 | return "unknown_operation"; | |
1476 | } | |
1477 | ||
1da177e4 | 1478 | #define nfsd4_voidres nfsd4_voidargs |
1da177e4 LT |
1479 | struct nfsd4_voidargs { int dummy; }; |
1480 | ||
1da177e4 | 1481 | static struct svc_procedure nfsd_procedures4[2] = { |
0a93a47f YZ |
1482 | [NFSPROC4_NULL] = { |
1483 | .pc_func = (svc_procfunc) nfsd4_proc_null, | |
1484 | .pc_encode = (kxdrproc_t) nfs4svc_encode_voidres, | |
1485 | .pc_argsize = sizeof(struct nfsd4_voidargs), | |
1486 | .pc_ressize = sizeof(struct nfsd4_voidres), | |
1487 | .pc_cachetype = RC_NOCACHE, | |
1488 | .pc_xdrressize = 1, | |
1489 | }, | |
1490 | [NFSPROC4_COMPOUND] = { | |
1491 | .pc_func = (svc_procfunc) nfsd4_proc_compound, | |
1492 | .pc_decode = (kxdrproc_t) nfs4svc_decode_compoundargs, | |
1493 | .pc_encode = (kxdrproc_t) nfs4svc_encode_compoundres, | |
1494 | .pc_argsize = sizeof(struct nfsd4_compoundargs), | |
1495 | .pc_ressize = sizeof(struct nfsd4_compoundres), | |
3e98abff | 1496 | .pc_release = nfsd4_release_compoundargs, |
0a93a47f YZ |
1497 | .pc_cachetype = RC_NOCACHE, |
1498 | .pc_xdrressize = NFSD_BUFSIZE/4, | |
1499 | }, | |
1da177e4 LT |
1500 | }; |
1501 | ||
1502 | struct svc_version nfsd_version4 = { | |
1503 | .vs_vers = 4, | |
1504 | .vs_nproc = 2, | |
1505 | .vs_proc = nfsd_procedures4, | |
1506 | .vs_dispatch = nfsd_dispatch, | |
1507 | .vs_xdrsize = NFS4_SVC_XDRSIZE, | |
1508 | }; | |
1509 | ||
1510 | /* | |
1511 | * Local variables: | |
1512 | * c-basic-offset: 8 | |
1513 | * End: | |
1514 | */ |