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Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * fs/nfsd/nfs4proc.c | |
3 | * | |
4 | * Server-side procedures for NFSv4. | |
5 | * | |
6 | * Copyright (c) 2002 The Regents of the University of Michigan. | |
7 | * All rights reserved. | |
8 | * | |
9 | * Kendrick Smith <kmsmith@umich.edu> | |
10 | * Andy Adamson <andros@umich.edu> | |
11 | * | |
12 | * Redistribution and use in source and binary forms, with or without | |
13 | * modification, are permitted provided that the following conditions | |
14 | * are met: | |
15 | * | |
16 | * 1. Redistributions of source code must retain the above copyright | |
17 | * notice, this list of conditions and the following disclaimer. | |
18 | * 2. Redistributions in binary form must reproduce the above copyright | |
19 | * notice, this list of conditions and the following disclaimer in the | |
20 | * documentation and/or other materials provided with the distribution. | |
21 | * 3. Neither the name of the University nor the names of its | |
22 | * contributors may be used to endorse or promote products derived | |
23 | * from this software without specific prior written permission. | |
24 | * | |
25 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED | |
26 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF | |
27 | * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE | |
28 | * DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | |
29 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR | |
30 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF | |
31 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR | |
32 | * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF | |
33 | * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING | |
34 | * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS | |
35 | * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
1da177e4 LT |
36 | */ |
37 | ||
38 | #include <linux/param.h> | |
39 | #include <linux/major.h> | |
40 | #include <linux/slab.h> | |
7e06b7f9 | 41 | #include <linux/file.h> |
1da177e4 LT |
42 | |
43 | #include <linux/sunrpc/svc.h> | |
44 | #include <linux/nfsd/nfsd.h> | |
45 | #include <linux/nfsd/cache.h> | |
46 | #include <linux/nfs4.h> | |
47 | #include <linux/nfsd/state.h> | |
48 | #include <linux/nfsd/xdr4.h> | |
49 | #include <linux/nfs4_acl.h> | |
dcb488a3 | 50 | #include <linux/sunrpc/gss_api.h> |
0a3adade | 51 | #include "vfs.h" |
1da177e4 LT |
52 | |
53 | #define NFSDDBG_FACILITY NFSDDBG_PROC | |
54 | ||
3c8e0316 YZ |
55 | static u32 nfsd_attrmask[] = { |
56 | NFSD_WRITEABLE_ATTRS_WORD0, | |
57 | NFSD_WRITEABLE_ATTRS_WORD1, | |
58 | NFSD_WRITEABLE_ATTRS_WORD2 | |
59 | }; | |
60 | ||
61 | static u32 nfsd41_ex_attrmask[] = { | |
62 | NFSD_SUPPATTR_EXCLCREAT_WORD0, | |
63 | NFSD_SUPPATTR_EXCLCREAT_WORD1, | |
64 | NFSD_SUPPATTR_EXCLCREAT_WORD2 | |
65 | }; | |
66 | ||
67 | static __be32 | |
68 | check_attr_support(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, | |
69 | u32 *bmval, u32 *writable) | |
70 | { | |
71 | struct dentry *dentry = cstate->current_fh.fh_dentry; | |
3c8e0316 YZ |
72 | |
73 | /* | |
74 | * Check about attributes are supported by the NFSv4 server or not. | |
75 | * According to spec, unsupported attributes return ERR_ATTRNOTSUPP. | |
76 | */ | |
77 | if ((bmval[0] & ~nfsd_suppattrs0(cstate->minorversion)) || | |
78 | (bmval[1] & ~nfsd_suppattrs1(cstate->minorversion)) || | |
79 | (bmval[2] & ~nfsd_suppattrs2(cstate->minorversion))) | |
80 | return nfserr_attrnotsupp; | |
81 | ||
82 | /* | |
a06b1261 | 83 | * Check FATTR4_WORD0_ACL can be supported |
3c8e0316 YZ |
84 | * in current environment or not. |
85 | */ | |
86 | if (bmval[0] & FATTR4_WORD0_ACL) { | |
87 | if (!IS_POSIXACL(dentry->d_inode)) | |
88 | return nfserr_attrnotsupp; | |
89 | } | |
3c8e0316 YZ |
90 | |
91 | /* | |
92 | * According to spec, read-only attributes return ERR_INVAL. | |
93 | */ | |
94 | if (writable) { | |
95 | if ((bmval[0] & ~writable[0]) || (bmval[1] & ~writable[1]) || | |
96 | (bmval[2] & ~writable[2])) | |
97 | return nfserr_inval; | |
98 | } | |
99 | ||
100 | return nfs_ok; | |
101 | } | |
102 | ||
103 | static __be32 | |
104 | nfsd4_check_open_attributes(struct svc_rqst *rqstp, | |
105 | struct nfsd4_compound_state *cstate, struct nfsd4_open *open) | |
106 | { | |
107 | __be32 status = nfs_ok; | |
108 | ||
109 | if (open->op_create == NFS4_OPEN_CREATE) { | |
110 | if (open->op_createmode == NFS4_CREATE_UNCHECKED | |
111 | || open->op_createmode == NFS4_CREATE_GUARDED) | |
112 | status = check_attr_support(rqstp, cstate, | |
113 | open->op_bmval, nfsd_attrmask); | |
114 | else if (open->op_createmode == NFS4_CREATE_EXCLUSIVE4_1) | |
115 | status = check_attr_support(rqstp, cstate, | |
116 | open->op_bmval, nfsd41_ex_attrmask); | |
117 | } | |
118 | ||
119 | return status; | |
120 | } | |
121 | ||
9208faf2 YZ |
122 | static int |
123 | is_create_with_attrs(struct nfsd4_open *open) | |
124 | { | |
125 | return open->op_create == NFS4_OPEN_CREATE | |
126 | && (open->op_createmode == NFS4_CREATE_UNCHECKED | |
127 | || open->op_createmode == NFS4_CREATE_GUARDED | |
128 | || open->op_createmode == NFS4_CREATE_EXCLUSIVE4_1); | |
129 | } | |
130 | ||
131 | /* | |
132 | * if error occurs when setting the acl, just clear the acl bit | |
133 | * in the returned attr bitmap. | |
134 | */ | |
135 | static void | |
136 | do_set_nfs4_acl(struct svc_rqst *rqstp, struct svc_fh *fhp, | |
137 | struct nfs4_acl *acl, u32 *bmval) | |
138 | { | |
139 | __be32 status; | |
140 | ||
141 | status = nfsd4_set_nfs4_acl(rqstp, fhp, acl); | |
142 | if (status) | |
143 | /* | |
144 | * We should probably fail the whole open at this point, | |
145 | * but we've already created the file, so it's too late; | |
146 | * So this seems the least of evils: | |
147 | */ | |
148 | bmval[0] &= ~FATTR4_WORD0_ACL; | |
149 | } | |
150 | ||
1da177e4 LT |
151 | static inline void |
152 | fh_dup2(struct svc_fh *dst, struct svc_fh *src) | |
153 | { | |
154 | fh_put(dst); | |
155 | dget(src->fh_dentry); | |
156 | if (src->fh_export) | |
157 | cache_get(&src->fh_export->h); | |
158 | *dst = *src; | |
159 | } | |
160 | ||
b37ad28b | 161 | static __be32 |
dc730e17 | 162 | do_open_permission(struct svc_rqst *rqstp, struct svc_fh *current_fh, struct nfsd4_open *open, int accmode) |
1da177e4 | 163 | { |
b37ad28b | 164 | __be32 status; |
1da177e4 LT |
165 | |
166 | if (open->op_truncate && | |
167 | !(open->op_share_access & NFS4_SHARE_ACCESS_WRITE)) | |
168 | return nfserr_inval; | |
169 | ||
1da177e4 | 170 | if (open->op_share_access & NFS4_SHARE_ACCESS_READ) |
8837abca | 171 | accmode |= NFSD_MAY_READ; |
9801d8a3 | 172 | if (open->op_share_access & NFS4_SHARE_ACCESS_WRITE) |
8837abca | 173 | accmode |= (NFSD_MAY_WRITE | NFSD_MAY_TRUNC); |
9801d8a3 | 174 | if (open->op_share_deny & NFS4_SHARE_DENY_WRITE) |
8837abca | 175 | accmode |= NFSD_MAY_WRITE; |
1da177e4 LT |
176 | |
177 | status = fh_verify(rqstp, current_fh, S_IFREG, accmode); | |
178 | ||
179 | return status; | |
180 | } | |
181 | ||
b37ad28b | 182 | static __be32 |
1da177e4 LT |
183 | do_open_lookup(struct svc_rqst *rqstp, struct svc_fh *current_fh, struct nfsd4_open *open) |
184 | { | |
185 | struct svc_fh resfh; | |
b37ad28b | 186 | __be32 status; |
81ac95c5 | 187 | int created = 0; |
1da177e4 LT |
188 | |
189 | fh_init(&resfh, NFS4_FHSIZE); | |
190 | open->op_truncate = 0; | |
191 | ||
192 | if (open->op_create) { | |
79fb54ab BH |
193 | /* FIXME: check session persistence and pnfs flags. |
194 | * The nfsv4.1 spec requires the following semantics: | |
195 | * | |
196 | * Persistent | pNFS | Server REQUIRED | Client Allowed | |
197 | * Reply Cache | server | | | |
198 | * -------------+--------+-----------------+-------------------- | |
199 | * no | no | EXCLUSIVE4_1 | EXCLUSIVE4_1 | |
200 | * | | | (SHOULD) | |
201 | * | | and EXCLUSIVE4 | or EXCLUSIVE4 | |
202 | * | | | (SHOULD NOT) | |
203 | * no | yes | EXCLUSIVE4_1 | EXCLUSIVE4_1 | |
204 | * yes | no | GUARDED4 | GUARDED4 | |
205 | * yes | yes | GUARDED4 | GUARDED4 | |
206 | */ | |
207 | ||
1da177e4 LT |
208 | /* |
209 | * Note: create modes (UNCHECKED,GUARDED...) are the same | |
210 | * in NFSv4 as in v3. | |
211 | */ | |
212 | status = nfsd_create_v3(rqstp, current_fh, open->op_fname.data, | |
213 | open->op_fname.len, &open->op_iattr, | |
214 | &resfh, open->op_createmode, | |
749997e5 JL |
215 | (u32 *)open->op_verf.data, |
216 | &open->op_truncate, &created); | |
217 | ||
99f88726 BF |
218 | /* |
219 | * Following rfc 3530 14.2.16, use the returned bitmask | |
220 | * to indicate which attributes we used to store the | |
221 | * verifier: | |
749997e5 JL |
222 | */ |
223 | if (open->op_createmode == NFS4_CREATE_EXCLUSIVE && status == 0) | |
99f88726 | 224 | open->op_bmval[1] = (FATTR4_WORD1_TIME_ACCESS | |
749997e5 | 225 | FATTR4_WORD1_TIME_MODIFY); |
af85852d | 226 | } else { |
1da177e4 LT |
227 | status = nfsd_lookup(rqstp, current_fh, |
228 | open->op_fname.data, open->op_fname.len, &resfh); | |
229 | fh_unlock(current_fh); | |
230 | } | |
af85852d BF |
231 | if (status) |
232 | goto out; | |
1da177e4 | 233 | |
9208faf2 YZ |
234 | if (is_create_with_attrs(open) && open->op_acl != NULL) |
235 | do_set_nfs4_acl(rqstp, &resfh, open->op_acl, open->op_bmval); | |
236 | ||
af85852d | 237 | set_change_info(&open->op_cinfo, current_fh); |
13024b7b | 238 | fh_dup2(current_fh, &resfh); |
1da177e4 | 239 | |
af85852d | 240 | /* set reply cache */ |
a4773c08 BF |
241 | fh_copy_shallow(&open->op_stateowner->so_replay.rp_openfh, |
242 | &resfh.fh_handle); | |
81ac95c5 | 243 | if (!created) |
8837abca MS |
244 | status = do_open_permission(rqstp, current_fh, open, |
245 | NFSD_MAY_NOP); | |
1da177e4 | 246 | |
af85852d | 247 | out: |
1da177e4 LT |
248 | fh_put(&resfh); |
249 | return status; | |
250 | } | |
251 | ||
b37ad28b | 252 | static __be32 |
1da177e4 LT |
253 | do_open_fhandle(struct svc_rqst *rqstp, struct svc_fh *current_fh, struct nfsd4_open *open) |
254 | { | |
b37ad28b | 255 | __be32 status; |
1da177e4 LT |
256 | |
257 | /* Only reclaims from previously confirmed clients are valid */ | |
258 | if ((status = nfs4_check_open_reclaim(&open->op_clientid))) | |
259 | return status; | |
260 | ||
261 | /* We don't know the target directory, and therefore can not | |
262 | * set the change info | |
263 | */ | |
264 | ||
265 | memset(&open->op_cinfo, 0, sizeof(struct nfsd4_change_info)); | |
266 | ||
267 | /* set replay cache */ | |
a4773c08 BF |
268 | fh_copy_shallow(&open->op_stateowner->so_replay.rp_openfh, |
269 | ¤t_fh->fh_handle); | |
1da177e4 LT |
270 | |
271 | open->op_truncate = (open->op_iattr.ia_valid & ATTR_SIZE) && | |
272 | (open->op_iattr.ia_size == 0); | |
273 | ||
8837abca MS |
274 | status = do_open_permission(rqstp, current_fh, open, |
275 | NFSD_MAY_OWNER_OVERRIDE); | |
1da177e4 LT |
276 | |
277 | return status; | |
278 | } | |
279 | ||
60adfc50 AA |
280 | static void |
281 | copy_clientid(clientid_t *clid, struct nfsd4_session *session) | |
282 | { | |
283 | struct nfsd4_sessionid *sid = | |
284 | (struct nfsd4_sessionid *)session->se_sessionid.data; | |
285 | ||
286 | clid->cl_boot = sid->clientid.cl_boot; | |
287 | clid->cl_id = sid->clientid.cl_id; | |
288 | } | |
1da177e4 | 289 | |
7191155b | 290 | static __be32 |
ca364317 | 291 | nfsd4_open(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
a4f1706a | 292 | struct nfsd4_open *open) |
1da177e4 | 293 | { |
b37ad28b | 294 | __be32 status; |
6668958f AA |
295 | struct nfsd4_compoundres *resp; |
296 | ||
1da177e4 LT |
297 | dprintk("NFSD: nfsd4_open filename %.*s op_stateowner %p\n", |
298 | (int)open->op_fname.len, open->op_fname.data, | |
299 | open->op_stateowner); | |
300 | ||
1da177e4 LT |
301 | /* This check required by spec. */ |
302 | if (open->op_create && open->op_claim_type != NFS4_OPEN_CLAIM_NULL) | |
303 | return nfserr_inval; | |
304 | ||
60adfc50 AA |
305 | if (nfsd4_has_session(cstate)) |
306 | copy_clientid(&open->op_clientid, cstate->session); | |
307 | ||
1da177e4 LT |
308 | nfs4_lock_state(); |
309 | ||
310 | /* check seqid for replay. set nfs4_owner */ | |
6668958f AA |
311 | resp = rqstp->rq_resp; |
312 | status = nfsd4_process_open1(&resp->cstate, open); | |
a90b061c | 313 | if (status == nfserr_replay_me) { |
1da177e4 | 314 | struct nfs4_replay *rp = &open->op_stateowner->so_replay; |
ca364317 | 315 | fh_put(&cstate->current_fh); |
a4773c08 BF |
316 | fh_copy_shallow(&cstate->current_fh.fh_handle, |
317 | &rp->rp_openfh); | |
8837abca | 318 | status = fh_verify(rqstp, &cstate->current_fh, 0, NFSD_MAY_NOP); |
1da177e4 LT |
319 | if (status) |
320 | dprintk("nfsd4_open: replay failed" | |
321 | " restoring previous filehandle\n"); | |
322 | else | |
a90b061c | 323 | status = nfserr_replay_me; |
1da177e4 LT |
324 | } |
325 | if (status) | |
326 | goto out; | |
fb553c0f | 327 | |
3c8e0316 YZ |
328 | status = nfsd4_check_open_attributes(rqstp, cstate, open); |
329 | if (status) | |
330 | goto out; | |
331 | ||
fb553c0f BF |
332 | /* Openowner is now set, so sequence id will get bumped. Now we need |
333 | * these checks before we do any creates: */ | |
cbd0d51a | 334 | status = nfserr_grace; |
af558e33 | 335 | if (locks_in_grace() && open->op_claim_type != NFS4_OPEN_CLAIM_PREVIOUS) |
cbd0d51a BF |
336 | goto out; |
337 | status = nfserr_no_grace; | |
af558e33 | 338 | if (!locks_in_grace() && open->op_claim_type == NFS4_OPEN_CLAIM_PREVIOUS) |
cbd0d51a | 339 | goto out; |
fb553c0f | 340 | |
1da177e4 | 341 | switch (open->op_claim_type) { |
0dd3c192 | 342 | case NFS4_OPEN_CLAIM_DELEGATE_CUR: |
1da177e4 LT |
343 | case NFS4_OPEN_CLAIM_NULL: |
344 | /* | |
345 | * (1) set CURRENT_FH to the file being opened, | |
346 | * creating it if necessary, (2) set open->op_cinfo, | |
347 | * (3) set open->op_truncate if the file is to be | |
348 | * truncated after opening, (4) do permission checking. | |
349 | */ | |
ca364317 BF |
350 | status = do_open_lookup(rqstp, &cstate->current_fh, |
351 | open); | |
1da177e4 LT |
352 | if (status) |
353 | goto out; | |
354 | break; | |
355 | case NFS4_OPEN_CLAIM_PREVIOUS: | |
a525825d | 356 | open->op_stateowner->so_confirmed = 1; |
1da177e4 LT |
357 | /* |
358 | * The CURRENT_FH is already set to the file being | |
359 | * opened. (1) set open->op_cinfo, (2) set | |
360 | * open->op_truncate if the file is to be truncated | |
361 | * after opening, (3) do permission checking. | |
362 | */ | |
ca364317 BF |
363 | status = do_open_fhandle(rqstp, &cstate->current_fh, |
364 | open); | |
1da177e4 LT |
365 | if (status) |
366 | goto out; | |
367 | break; | |
1da177e4 | 368 | case NFS4_OPEN_CLAIM_DELEGATE_PREV: |
a525825d | 369 | open->op_stateowner->so_confirmed = 1; |
2fdada03 | 370 | dprintk("NFSD: unsupported OPEN claim type %d\n", |
1da177e4 LT |
371 | open->op_claim_type); |
372 | status = nfserr_notsupp; | |
373 | goto out; | |
374 | default: | |
2fdada03 | 375 | dprintk("NFSD: Invalid OPEN claim type %d\n", |
1da177e4 LT |
376 | open->op_claim_type); |
377 | status = nfserr_inval; | |
378 | goto out; | |
379 | } | |
380 | /* | |
381 | * nfsd4_process_open2() does the actual opening of the file. If | |
382 | * successful, it (1) truncates the file if open->op_truncate was | |
383 | * set, (2) sets open->op_stateid, (3) sets open->op_delegation. | |
384 | */ | |
ca364317 | 385 | status = nfsd4_process_open2(rqstp, &cstate->current_fh, open); |
1da177e4 | 386 | out: |
f2327d9a | 387 | if (open->op_stateowner) { |
1da177e4 | 388 | nfs4_get_stateowner(open->op_stateowner); |
a4f1706a | 389 | cstate->replay_owner = open->op_stateowner; |
f2327d9a | 390 | } |
1da177e4 LT |
391 | nfs4_unlock_state(); |
392 | return status; | |
393 | } | |
394 | ||
395 | /* | |
396 | * filehandle-manipulating ops. | |
397 | */ | |
7191155b | 398 | static __be32 |
b591480b BF |
399 | nfsd4_getfh(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
400 | struct svc_fh **getfh) | |
1da177e4 | 401 | { |
ca364317 | 402 | if (!cstate->current_fh.fh_dentry) |
1da177e4 LT |
403 | return nfserr_nofilehandle; |
404 | ||
ca364317 | 405 | *getfh = &cstate->current_fh; |
1da177e4 LT |
406 | return nfs_ok; |
407 | } | |
408 | ||
7191155b | 409 | static __be32 |
ca364317 BF |
410 | nfsd4_putfh(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
411 | struct nfsd4_putfh *putfh) | |
1da177e4 | 412 | { |
ca364317 BF |
413 | fh_put(&cstate->current_fh); |
414 | cstate->current_fh.fh_handle.fh_size = putfh->pf_fhlen; | |
415 | memcpy(&cstate->current_fh.fh_handle.fh_base, putfh->pf_fhval, | |
416 | putfh->pf_fhlen); | |
8837abca | 417 | return fh_verify(rqstp, &cstate->current_fh, 0, NFSD_MAY_NOP); |
1da177e4 LT |
418 | } |
419 | ||
7191155b | 420 | static __be32 |
b591480b BF |
421 | nfsd4_putrootfh(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
422 | void *arg) | |
1da177e4 | 423 | { |
b37ad28b | 424 | __be32 status; |
1da177e4 | 425 | |
ca364317 | 426 | fh_put(&cstate->current_fh); |
df547efb | 427 | status = exp_pseudoroot(rqstp, &cstate->current_fh); |
1da177e4 LT |
428 | return status; |
429 | } | |
430 | ||
7191155b | 431 | static __be32 |
b591480b BF |
432 | nfsd4_restorefh(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
433 | void *arg) | |
1da177e4 | 434 | { |
ca364317 | 435 | if (!cstate->save_fh.fh_dentry) |
1da177e4 LT |
436 | return nfserr_restorefh; |
437 | ||
ca364317 | 438 | fh_dup2(&cstate->current_fh, &cstate->save_fh); |
1da177e4 LT |
439 | return nfs_ok; |
440 | } | |
441 | ||
7191155b | 442 | static __be32 |
b591480b BF |
443 | nfsd4_savefh(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
444 | void *arg) | |
1da177e4 | 445 | { |
ca364317 | 446 | if (!cstate->current_fh.fh_dentry) |
1da177e4 LT |
447 | return nfserr_nofilehandle; |
448 | ||
ca364317 | 449 | fh_dup2(&cstate->save_fh, &cstate->current_fh); |
1da177e4 LT |
450 | return nfs_ok; |
451 | } | |
452 | ||
453 | /* | |
454 | * misc nfsv4 ops | |
455 | */ | |
7191155b | 456 | static __be32 |
ca364317 BF |
457 | nfsd4_access(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
458 | struct nfsd4_access *access) | |
1da177e4 LT |
459 | { |
460 | if (access->ac_req_access & ~NFS3_ACCESS_FULL) | |
461 | return nfserr_inval; | |
462 | ||
463 | access->ac_resp_access = access->ac_req_access; | |
ca364317 BF |
464 | return nfsd_access(rqstp, &cstate->current_fh, &access->ac_resp_access, |
465 | &access->ac_supported); | |
1da177e4 LT |
466 | } |
467 | ||
7191155b | 468 | static __be32 |
ca364317 BF |
469 | nfsd4_commit(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
470 | struct nfsd4_commit *commit) | |
1da177e4 | 471 | { |
b37ad28b | 472 | __be32 status; |
1da177e4 LT |
473 | |
474 | u32 *p = (u32 *)commit->co_verf.data; | |
475 | *p++ = nfssvc_boot.tv_sec; | |
476 | *p++ = nfssvc_boot.tv_usec; | |
477 | ||
ca364317 BF |
478 | status = nfsd_commit(rqstp, &cstate->current_fh, commit->co_offset, |
479 | commit->co_count); | |
1da177e4 LT |
480 | if (status == nfserr_symlink) |
481 | status = nfserr_inval; | |
482 | return status; | |
483 | } | |
484 | ||
b37ad28b | 485 | static __be32 |
ca364317 BF |
486 | nfsd4_create(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
487 | struct nfsd4_create *create) | |
1da177e4 LT |
488 | { |
489 | struct svc_fh resfh; | |
b37ad28b | 490 | __be32 status; |
1da177e4 LT |
491 | dev_t rdev; |
492 | ||
493 | fh_init(&resfh, NFS4_FHSIZE); | |
494 | ||
8837abca MS |
495 | status = fh_verify(rqstp, &cstate->current_fh, S_IFDIR, |
496 | NFSD_MAY_CREATE); | |
1da177e4 LT |
497 | if (status == nfserr_symlink) |
498 | status = nfserr_notdir; | |
499 | if (status) | |
500 | return status; | |
501 | ||
3c8e0316 YZ |
502 | status = check_attr_support(rqstp, cstate, create->cr_bmval, |
503 | nfsd_attrmask); | |
504 | if (status) | |
505 | return status; | |
506 | ||
1da177e4 LT |
507 | switch (create->cr_type) { |
508 | case NF4LNK: | |
509 | /* ugh! we have to null-terminate the linktext, or | |
510 | * vfs_symlink() will choke. it is always safe to | |
511 | * null-terminate by brute force, since at worst we | |
512 | * will overwrite the first byte of the create namelen | |
513 | * in the XDR buffer, which has already been extracted | |
514 | * during XDR decode. | |
515 | */ | |
516 | create->cr_linkname[create->cr_linklen] = 0; | |
517 | ||
ca364317 BF |
518 | status = nfsd_symlink(rqstp, &cstate->current_fh, |
519 | create->cr_name, create->cr_namelen, | |
520 | create->cr_linkname, create->cr_linklen, | |
521 | &resfh, &create->cr_iattr); | |
1da177e4 LT |
522 | break; |
523 | ||
524 | case NF4BLK: | |
525 | rdev = MKDEV(create->cr_specdata1, create->cr_specdata2); | |
526 | if (MAJOR(rdev) != create->cr_specdata1 || | |
527 | MINOR(rdev) != create->cr_specdata2) | |
528 | return nfserr_inval; | |
ca364317 BF |
529 | status = nfsd_create(rqstp, &cstate->current_fh, |
530 | create->cr_name, create->cr_namelen, | |
531 | &create->cr_iattr, S_IFBLK, rdev, &resfh); | |
1da177e4 LT |
532 | break; |
533 | ||
534 | case NF4CHR: | |
535 | rdev = MKDEV(create->cr_specdata1, create->cr_specdata2); | |
536 | if (MAJOR(rdev) != create->cr_specdata1 || | |
537 | MINOR(rdev) != create->cr_specdata2) | |
538 | return nfserr_inval; | |
ca364317 BF |
539 | status = nfsd_create(rqstp, &cstate->current_fh, |
540 | create->cr_name, create->cr_namelen, | |
541 | &create->cr_iattr,S_IFCHR, rdev, &resfh); | |
1da177e4 LT |
542 | break; |
543 | ||
544 | case NF4SOCK: | |
ca364317 BF |
545 | status = nfsd_create(rqstp, &cstate->current_fh, |
546 | create->cr_name, create->cr_namelen, | |
547 | &create->cr_iattr, S_IFSOCK, 0, &resfh); | |
1da177e4 LT |
548 | break; |
549 | ||
550 | case NF4FIFO: | |
ca364317 BF |
551 | status = nfsd_create(rqstp, &cstate->current_fh, |
552 | create->cr_name, create->cr_namelen, | |
553 | &create->cr_iattr, S_IFIFO, 0, &resfh); | |
1da177e4 LT |
554 | break; |
555 | ||
556 | case NF4DIR: | |
557 | create->cr_iattr.ia_valid &= ~ATTR_SIZE; | |
ca364317 BF |
558 | status = nfsd_create(rqstp, &cstate->current_fh, |
559 | create->cr_name, create->cr_namelen, | |
560 | &create->cr_iattr, S_IFDIR, 0, &resfh); | |
1da177e4 LT |
561 | break; |
562 | ||
563 | default: | |
564 | status = nfserr_badtype; | |
565 | } | |
566 | ||
9208faf2 YZ |
567 | if (status) |
568 | goto out; | |
1da177e4 | 569 | |
9208faf2 YZ |
570 | if (create->cr_acl != NULL) |
571 | do_set_nfs4_acl(rqstp, &resfh, create->cr_acl, | |
572 | create->cr_bmval); | |
573 | ||
574 | fh_unlock(&cstate->current_fh); | |
575 | set_change_info(&create->cr_cinfo, &cstate->current_fh); | |
576 | fh_dup2(&cstate->current_fh, &resfh); | |
577 | out: | |
1da177e4 LT |
578 | fh_put(&resfh); |
579 | return status; | |
580 | } | |
581 | ||
7191155b | 582 | static __be32 |
ca364317 BF |
583 | nfsd4_getattr(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
584 | struct nfsd4_getattr *getattr) | |
1da177e4 | 585 | { |
b37ad28b | 586 | __be32 status; |
1da177e4 | 587 | |
8837abca | 588 | status = fh_verify(rqstp, &cstate->current_fh, 0, NFSD_MAY_NOP); |
1da177e4 LT |
589 | if (status) |
590 | return status; | |
591 | ||
592 | if (getattr->ga_bmval[1] & NFSD_WRITEONLY_ATTRS_WORD1) | |
593 | return nfserr_inval; | |
594 | ||
7e705706 AA |
595 | getattr->ga_bmval[0] &= nfsd_suppattrs0(cstate->minorversion); |
596 | getattr->ga_bmval[1] &= nfsd_suppattrs1(cstate->minorversion); | |
597 | getattr->ga_bmval[2] &= nfsd_suppattrs2(cstate->minorversion); | |
1da177e4 | 598 | |
ca364317 | 599 | getattr->ga_fhp = &cstate->current_fh; |
1da177e4 LT |
600 | return nfs_ok; |
601 | } | |
602 | ||
7191155b | 603 | static __be32 |
ca364317 BF |
604 | nfsd4_link(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
605 | struct nfsd4_link *link) | |
1da177e4 | 606 | { |
b37ad28b | 607 | __be32 status = nfserr_nofilehandle; |
1da177e4 | 608 | |
ca364317 | 609 | if (!cstate->save_fh.fh_dentry) |
1da177e4 | 610 | return status; |
ca364317 BF |
611 | status = nfsd_link(rqstp, &cstate->current_fh, |
612 | link->li_name, link->li_namelen, &cstate->save_fh); | |
1da177e4 | 613 | if (!status) |
ca364317 | 614 | set_change_info(&link->li_cinfo, &cstate->current_fh); |
1da177e4 LT |
615 | return status; |
616 | } | |
617 | ||
b37ad28b | 618 | static __be32 |
b591480b BF |
619 | nfsd4_lookupp(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
620 | void *arg) | |
1da177e4 LT |
621 | { |
622 | struct svc_fh tmp_fh; | |
b37ad28b | 623 | __be32 ret; |
1da177e4 LT |
624 | |
625 | fh_init(&tmp_fh, NFS4_FHSIZE); | |
df547efb BF |
626 | ret = exp_pseudoroot(rqstp, &tmp_fh); |
627 | if (ret) | |
1da177e4 | 628 | return ret; |
ca364317 | 629 | if (tmp_fh.fh_dentry == cstate->current_fh.fh_dentry) { |
1da177e4 LT |
630 | fh_put(&tmp_fh); |
631 | return nfserr_noent; | |
632 | } | |
633 | fh_put(&tmp_fh); | |
ca364317 BF |
634 | return nfsd_lookup(rqstp, &cstate->current_fh, |
635 | "..", 2, &cstate->current_fh); | |
1da177e4 LT |
636 | } |
637 | ||
7191155b | 638 | static __be32 |
ca364317 BF |
639 | nfsd4_lookup(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
640 | struct nfsd4_lookup *lookup) | |
1da177e4 | 641 | { |
ca364317 BF |
642 | return nfsd_lookup(rqstp, &cstate->current_fh, |
643 | lookup->lo_name, lookup->lo_len, | |
644 | &cstate->current_fh); | |
1da177e4 LT |
645 | } |
646 | ||
7191155b | 647 | static __be32 |
ca364317 BF |
648 | nfsd4_read(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
649 | struct nfsd4_read *read) | |
1da177e4 | 650 | { |
b37ad28b | 651 | __be32 status; |
1da177e4 LT |
652 | |
653 | /* no need to check permission - this will be done in nfsd_read() */ | |
654 | ||
7e06b7f9 | 655 | read->rd_filp = NULL; |
1da177e4 LT |
656 | if (read->rd_offset >= OFFSET_MAX) |
657 | return nfserr_inval; | |
658 | ||
659 | nfs4_lock_state(); | |
660 | /* check stateid */ | |
dd453dfd BH |
661 | if ((status = nfs4_preprocess_stateid_op(cstate, &read->rd_stateid, |
662 | RD_STATE, &read->rd_filp))) { | |
1da177e4 LT |
663 | dprintk("NFSD: nfsd4_read: couldn't process stateid!\n"); |
664 | goto out; | |
665 | } | |
7e06b7f9 N |
666 | if (read->rd_filp) |
667 | get_file(read->rd_filp); | |
1da177e4 LT |
668 | status = nfs_ok; |
669 | out: | |
670 | nfs4_unlock_state(); | |
671 | read->rd_rqstp = rqstp; | |
ca364317 | 672 | read->rd_fhp = &cstate->current_fh; |
1da177e4 LT |
673 | return status; |
674 | } | |
675 | ||
7191155b | 676 | static __be32 |
ca364317 BF |
677 | nfsd4_readdir(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
678 | struct nfsd4_readdir *readdir) | |
1da177e4 LT |
679 | { |
680 | u64 cookie = readdir->rd_cookie; | |
681 | static const nfs4_verifier zeroverf; | |
682 | ||
683 | /* no need to check permission - this will be done in nfsd_readdir() */ | |
684 | ||
685 | if (readdir->rd_bmval[1] & NFSD_WRITEONLY_ATTRS_WORD1) | |
686 | return nfserr_inval; | |
687 | ||
7e705706 AA |
688 | readdir->rd_bmval[0] &= nfsd_suppattrs0(cstate->minorversion); |
689 | readdir->rd_bmval[1] &= nfsd_suppattrs1(cstate->minorversion); | |
690 | readdir->rd_bmval[2] &= nfsd_suppattrs2(cstate->minorversion); | |
1da177e4 LT |
691 | |
692 | if ((cookie > ~(u32)0) || (cookie == 1) || (cookie == 2) || | |
693 | (cookie == 0 && memcmp(readdir->rd_verf.data, zeroverf.data, NFS4_VERIFIER_SIZE))) | |
694 | return nfserr_bad_cookie; | |
695 | ||
696 | readdir->rd_rqstp = rqstp; | |
ca364317 | 697 | readdir->rd_fhp = &cstate->current_fh; |
1da177e4 LT |
698 | return nfs_ok; |
699 | } | |
700 | ||
7191155b | 701 | static __be32 |
ca364317 BF |
702 | nfsd4_readlink(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
703 | struct nfsd4_readlink *readlink) | |
1da177e4 LT |
704 | { |
705 | readlink->rl_rqstp = rqstp; | |
ca364317 | 706 | readlink->rl_fhp = &cstate->current_fh; |
1da177e4 LT |
707 | return nfs_ok; |
708 | } | |
709 | ||
7191155b | 710 | static __be32 |
ca364317 BF |
711 | nfsd4_remove(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
712 | struct nfsd4_remove *remove) | |
1da177e4 | 713 | { |
b37ad28b | 714 | __be32 status; |
1da177e4 | 715 | |
af558e33 | 716 | if (locks_in_grace()) |
c815afc7 | 717 | return nfserr_grace; |
ca364317 BF |
718 | status = nfsd_unlink(rqstp, &cstate->current_fh, 0, |
719 | remove->rm_name, remove->rm_namelen); | |
1da177e4 LT |
720 | if (status == nfserr_symlink) |
721 | return nfserr_notdir; | |
722 | if (!status) { | |
ca364317 BF |
723 | fh_unlock(&cstate->current_fh); |
724 | set_change_info(&remove->rm_cinfo, &cstate->current_fh); | |
1da177e4 LT |
725 | } |
726 | return status; | |
727 | } | |
728 | ||
7191155b | 729 | static __be32 |
ca364317 BF |
730 | nfsd4_rename(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
731 | struct nfsd4_rename *rename) | |
1da177e4 | 732 | { |
b37ad28b | 733 | __be32 status = nfserr_nofilehandle; |
1da177e4 | 734 | |
ca364317 | 735 | if (!cstate->save_fh.fh_dentry) |
1da177e4 | 736 | return status; |
af558e33 | 737 | if (locks_in_grace() && !(cstate->save_fh.fh_export->ex_flags |
c815afc7 N |
738 | & NFSEXP_NOSUBTREECHECK)) |
739 | return nfserr_grace; | |
ca364317 BF |
740 | status = nfsd_rename(rqstp, &cstate->save_fh, rename->rn_sname, |
741 | rename->rn_snamelen, &cstate->current_fh, | |
1da177e4 LT |
742 | rename->rn_tname, rename->rn_tnamelen); |
743 | ||
744 | /* the underlying filesystem returns different error's than required | |
745 | * by NFSv4. both save_fh and current_fh have been verified.. */ | |
746 | if (status == nfserr_isdir) | |
747 | status = nfserr_exist; | |
748 | else if ((status == nfserr_notdir) && | |
ca364317 BF |
749 | (S_ISDIR(cstate->save_fh.fh_dentry->d_inode->i_mode) && |
750 | S_ISDIR(cstate->current_fh.fh_dentry->d_inode->i_mode))) | |
1da177e4 LT |
751 | status = nfserr_exist; |
752 | else if (status == nfserr_symlink) | |
753 | status = nfserr_notdir; | |
754 | ||
755 | if (!status) { | |
ca364317 BF |
756 | set_change_info(&rename->rn_sinfo, &cstate->current_fh); |
757 | set_change_info(&rename->rn_tinfo, &cstate->save_fh); | |
1da177e4 LT |
758 | } |
759 | return status; | |
760 | } | |
761 | ||
dcb488a3 AA |
762 | static __be32 |
763 | nfsd4_secinfo(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, | |
764 | struct nfsd4_secinfo *secinfo) | |
765 | { | |
766 | struct svc_fh resfh; | |
767 | struct svc_export *exp; | |
768 | struct dentry *dentry; | |
769 | __be32 err; | |
770 | ||
771 | fh_init(&resfh, NFS4_FHSIZE); | |
772 | err = nfsd_lookup_dentry(rqstp, &cstate->current_fh, | |
773 | secinfo->si_name, secinfo->si_namelen, | |
774 | &exp, &dentry); | |
775 | if (err) | |
776 | return err; | |
777 | if (dentry->d_inode == NULL) { | |
778 | exp_put(exp); | |
779 | err = nfserr_noent; | |
780 | } else | |
781 | secinfo->si_exp = exp; | |
782 | dput(dentry); | |
783 | return err; | |
784 | } | |
785 | ||
7191155b | 786 | static __be32 |
ca364317 BF |
787 | nfsd4_setattr(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
788 | struct nfsd4_setattr *setattr) | |
1da177e4 | 789 | { |
b37ad28b | 790 | __be32 status = nfs_ok; |
1da177e4 | 791 | |
1da177e4 LT |
792 | if (setattr->sa_iattr.ia_valid & ATTR_SIZE) { |
793 | nfs4_lock_state(); | |
dd453dfd | 794 | status = nfs4_preprocess_stateid_op(cstate, |
6150ef0d | 795 | &setattr->sa_stateid, WR_STATE, NULL); |
1da177e4 | 796 | nfs4_unlock_state(); |
375c5547 | 797 | if (status) { |
3e3b4800 | 798 | dprintk("NFSD: nfsd4_setattr: couldn't process stateid!\n"); |
375c5547 BF |
799 | return status; |
800 | } | |
1da177e4 | 801 | } |
18f335af DH |
802 | status = mnt_want_write(cstate->current_fh.fh_export->ex_path.mnt); |
803 | if (status) | |
804 | return status; | |
1da177e4 | 805 | status = nfs_ok; |
3c8e0316 YZ |
806 | |
807 | status = check_attr_support(rqstp, cstate, setattr->sa_bmval, | |
808 | nfsd_attrmask); | |
809 | if (status) | |
810 | goto out; | |
811 | ||
1da177e4 | 812 | if (setattr->sa_acl != NULL) |
ca364317 BF |
813 | status = nfsd4_set_nfs4_acl(rqstp, &cstate->current_fh, |
814 | setattr->sa_acl); | |
1da177e4 | 815 | if (status) |
18f335af | 816 | goto out; |
ca364317 | 817 | status = nfsd_setattr(rqstp, &cstate->current_fh, &setattr->sa_iattr, |
1da177e4 | 818 | 0, (time_t)0); |
18f335af DH |
819 | out: |
820 | mnt_drop_write(cstate->current_fh.fh_export->ex_path.mnt); | |
1da177e4 LT |
821 | return status; |
822 | } | |
823 | ||
7191155b | 824 | static __be32 |
ca364317 BF |
825 | nfsd4_write(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
826 | struct nfsd4_write *write) | |
1da177e4 LT |
827 | { |
828 | stateid_t *stateid = &write->wr_stateid; | |
829 | struct file *filp = NULL; | |
830 | u32 *p; | |
b37ad28b | 831 | __be32 status = nfs_ok; |
31dec253 | 832 | unsigned long cnt; |
1da177e4 LT |
833 | |
834 | /* no need to check permission - this will be done in nfsd_write() */ | |
835 | ||
836 | if (write->wr_offset >= OFFSET_MAX) | |
837 | return nfserr_inval; | |
838 | ||
839 | nfs4_lock_state(); | |
dd453dfd | 840 | status = nfs4_preprocess_stateid_op(cstate, stateid, WR_STATE, &filp); |
7e06b7f9 N |
841 | if (filp) |
842 | get_file(filp); | |
1da177e4 LT |
843 | nfs4_unlock_state(); |
844 | ||
375c5547 BF |
845 | if (status) { |
846 | dprintk("NFSD: nfsd4_write: couldn't process stateid!\n"); | |
847 | return status; | |
848 | } | |
849 | ||
31dec253 | 850 | cnt = write->wr_buflen; |
1da177e4 LT |
851 | write->wr_how_written = write->wr_stable_how; |
852 | p = (u32 *)write->wr_verifier.data; | |
853 | *p++ = nfssvc_boot.tv_sec; | |
854 | *p++ = nfssvc_boot.tv_usec; | |
855 | ||
ca364317 BF |
856 | status = nfsd_write(rqstp, &cstate->current_fh, filp, |
857 | write->wr_offset, rqstp->rq_vec, write->wr_vlen, | |
31dec253 | 858 | &cnt, &write->wr_how_written); |
7e06b7f9 N |
859 | if (filp) |
860 | fput(filp); | |
1da177e4 | 861 | |
31dec253 DS |
862 | write->wr_bytes_written = cnt; |
863 | ||
1da177e4 LT |
864 | if (status == nfserr_symlink) |
865 | status = nfserr_inval; | |
866 | return status; | |
1da177e4 LT |
867 | } |
868 | ||
869 | /* This routine never returns NFS_OK! If there are no other errors, it | |
870 | * will return NFSERR_SAME or NFSERR_NOT_SAME depending on whether the | |
871 | * attributes matched. VERIFY is implemented by mapping NFSERR_SAME | |
872 | * to NFS_OK after the call; NVERIFY by mapping NFSERR_NOT_SAME to NFS_OK. | |
873 | */ | |
b37ad28b | 874 | static __be32 |
c954e2a5 | 875 | _nfsd4_verify(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
ca364317 | 876 | struct nfsd4_verify *verify) |
1da177e4 | 877 | { |
2ebbc012 | 878 | __be32 *buf, *p; |
1da177e4 | 879 | int count; |
b37ad28b | 880 | __be32 status; |
1da177e4 | 881 | |
8837abca | 882 | status = fh_verify(rqstp, &cstate->current_fh, 0, NFSD_MAY_NOP); |
1da177e4 LT |
883 | if (status) |
884 | return status; | |
885 | ||
3c8e0316 YZ |
886 | status = check_attr_support(rqstp, cstate, verify->ve_bmval, NULL); |
887 | if (status) | |
888 | return status; | |
889 | ||
1da177e4 LT |
890 | if ((verify->ve_bmval[0] & FATTR4_WORD0_RDATTR_ERROR) |
891 | || (verify->ve_bmval[1] & NFSD_WRITEONLY_ATTRS_WORD1)) | |
892 | return nfserr_inval; | |
893 | if (verify->ve_attrlen & 3) | |
894 | return nfserr_inval; | |
895 | ||
896 | /* count in words: | |
897 | * bitmap_len(1) + bitmap(2) + attr_len(1) = 4 | |
898 | */ | |
899 | count = 4 + (verify->ve_attrlen >> 2); | |
900 | buf = kmalloc(count << 2, GFP_KERNEL); | |
901 | if (!buf) | |
902 | return nfserr_resource; | |
903 | ||
ca364317 BF |
904 | status = nfsd4_encode_fattr(&cstate->current_fh, |
905 | cstate->current_fh.fh_export, | |
906 | cstate->current_fh.fh_dentry, buf, | |
1da177e4 | 907 | &count, verify->ve_bmval, |
406a7ea9 | 908 | rqstp, 0); |
1da177e4 LT |
909 | |
910 | /* this means that nfsd4_encode_fattr() ran out of space */ | |
911 | if (status == nfserr_resource && count == 0) | |
912 | status = nfserr_not_same; | |
913 | if (status) | |
914 | goto out_kfree; | |
915 | ||
95ec28cd BH |
916 | /* skip bitmap */ |
917 | p = buf + 1 + ntohl(buf[0]); | |
1da177e4 LT |
918 | status = nfserr_not_same; |
919 | if (ntohl(*p++) != verify->ve_attrlen) | |
920 | goto out_kfree; | |
921 | if (!memcmp(p, verify->ve_attrval, verify->ve_attrlen)) | |
922 | status = nfserr_same; | |
923 | ||
924 | out_kfree: | |
925 | kfree(buf); | |
926 | return status; | |
927 | } | |
928 | ||
c954e2a5 BF |
929 | static __be32 |
930 | nfsd4_nverify(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, | |
931 | struct nfsd4_verify *verify) | |
932 | { | |
933 | __be32 status; | |
934 | ||
935 | status = _nfsd4_verify(rqstp, cstate, verify); | |
936 | return status == nfserr_not_same ? nfs_ok : status; | |
937 | } | |
938 | ||
939 | static __be32 | |
940 | nfsd4_verify(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, | |
941 | struct nfsd4_verify *verify) | |
942 | { | |
943 | __be32 status; | |
944 | ||
945 | status = _nfsd4_verify(rqstp, cstate, verify); | |
946 | return status == nfserr_same ? nfs_ok : status; | |
947 | } | |
948 | ||
1da177e4 LT |
949 | /* |
950 | * NULL call. | |
951 | */ | |
7111c66e | 952 | static __be32 |
1da177e4 LT |
953 | nfsd4_proc_null(struct svc_rqst *rqstp, void *argp, void *resp) |
954 | { | |
955 | return nfs_ok; | |
956 | } | |
957 | ||
e2b20950 SA |
958 | static inline void nfsd4_increment_op_stats(u32 opnum) |
959 | { | |
960 | if (opnum >= FIRST_NFS4_OP && opnum <= LAST_NFS4_OP) | |
961 | nfsdstats.nfs4_opcount[opnum]++; | |
962 | } | |
963 | ||
b591480b BF |
964 | typedef __be32(*nfsd4op_func)(struct svc_rqst *, struct nfsd4_compound_state *, |
965 | void *); | |
f9bb94c4 AA |
966 | enum nfsd4_op_flags { |
967 | ALLOWED_WITHOUT_FH = 1 << 0, /* No current filehandle required */ | |
968 | ALLOWED_ON_ABSENT_FS = 2 << 0, /* ops processed on absent fs */ | |
969 | ALLOWED_AS_FIRST_OP = 3 << 0, /* ops reqired first in compound */ | |
970 | }; | |
b591480b BF |
971 | |
972 | struct nfsd4_operation { | |
973 | nfsd4op_func op_func; | |
974 | u32 op_flags; | |
b001a1b6 | 975 | char *op_name; |
b591480b BF |
976 | }; |
977 | ||
978 | static struct nfsd4_operation nfsd4_ops[]; | |
979 | ||
f1c7f79b | 980 | static const char *nfsd4_op_name(unsigned opnum); |
b001a1b6 | 981 | |
f9bb94c4 AA |
982 | /* |
983 | * Enforce NFSv4.1 COMPOUND ordering rules. | |
984 | * | |
985 | * TODO: | |
986 | * - enforce NFS4ERR_NOT_ONLY_OP, | |
987 | * - DESTROY_SESSION MUST be the final operation in the COMPOUND request. | |
988 | */ | |
989 | static bool nfs41_op_ordering_ok(struct nfsd4_compoundargs *args) | |
990 | { | |
991 | if (args->minorversion && args->opcnt > 0) { | |
992 | struct nfsd4_op *op = &args->ops[0]; | |
993 | return (op->status == nfserr_op_illegal) || | |
994 | (nfsd4_ops[op->opnum].op_flags & ALLOWED_AS_FIRST_OP); | |
995 | } | |
996 | return true; | |
997 | } | |
998 | ||
1da177e4 LT |
999 | /* |
1000 | * COMPOUND call. | |
1001 | */ | |
7111c66e | 1002 | static __be32 |
1da177e4 LT |
1003 | nfsd4_proc_compound(struct svc_rqst *rqstp, |
1004 | struct nfsd4_compoundargs *args, | |
1005 | struct nfsd4_compoundres *resp) | |
1006 | { | |
1007 | struct nfsd4_op *op; | |
b591480b | 1008 | struct nfsd4_operation *opdesc; |
e354d571 | 1009 | struct nfsd4_compound_state *cstate = &resp->cstate; |
e5710199 | 1010 | int slack_bytes; |
b37ad28b | 1011 | __be32 status; |
1da177e4 | 1012 | |
1da177e4 | 1013 | resp->xbuf = &rqstp->rq_res; |
e354d571 AA |
1014 | resp->p = rqstp->rq_res.head[0].iov_base + |
1015 | rqstp->rq_res.head[0].iov_len; | |
1da177e4 LT |
1016 | resp->tagp = resp->p; |
1017 | /* reserve space for: taglen, tag, and opcnt */ | |
1018 | resp->p += 2 + XDR_QUADLEN(args->taglen); | |
1019 | resp->end = rqstp->rq_res.head[0].iov_base + PAGE_SIZE; | |
1020 | resp->taglen = args->taglen; | |
1021 | resp->tag = args->tag; | |
1022 | resp->opcnt = 0; | |
1023 | resp->rqstp = rqstp; | |
d87a8ade | 1024 | resp->cstate.minorversion = args->minorversion; |
e354d571 AA |
1025 | resp->cstate.replay_owner = NULL; |
1026 | fh_init(&resp->cstate.current_fh, NFS4_FHSIZE); | |
1027 | fh_init(&resp->cstate.save_fh, NFS4_FHSIZE); | |
2f425878 AA |
1028 | /* Use the deferral mechanism only for NFSv4.0 compounds */ |
1029 | rqstp->rq_usedeferral = (args->minorversion == 0); | |
1da177e4 LT |
1030 | |
1031 | /* | |
1032 | * According to RFC3010, this takes precedence over all other errors. | |
1033 | */ | |
1034 | status = nfserr_minor_vers_mismatch; | |
8daf220a | 1035 | if (args->minorversion > nfsd_supported_minorversion) |
1da177e4 LT |
1036 | goto out; |
1037 | ||
f9bb94c4 AA |
1038 | if (!nfs41_op_ordering_ok(args)) { |
1039 | op = &args->ops[0]; | |
1040 | op->status = nfserr_sequence_pos; | |
1041 | goto encode_op; | |
1042 | } | |
1043 | ||
1da177e4 LT |
1044 | status = nfs_ok; |
1045 | while (!status && resp->opcnt < args->opcnt) { | |
1046 | op = &args->ops[resp->opcnt++]; | |
1047 | ||
b001a1b6 BH |
1048 | dprintk("nfsv4 compound op #%d/%d: %d (%s)\n", |
1049 | resp->opcnt, args->opcnt, op->opnum, | |
1050 | nfsd4_op_name(op->opnum)); | |
1da177e4 LT |
1051 | /* |
1052 | * The XDR decode routines may have pre-set op->status; | |
1053 | * for example, if there is a miscellaneous XDR error | |
1054 | * it will be set to nfserr_bad_xdr. | |
1055 | */ | |
1056 | if (op->status) | |
1057 | goto encode_op; | |
1058 | ||
1059 | /* We must be able to encode a successful response to | |
1060 | * this operation, with enough room left over to encode a | |
1061 | * failed response to the next operation. If we don't | |
1062 | * have enough room, fail with ERR_RESOURCE. | |
1063 | */ | |
e5710199 BF |
1064 | slack_bytes = (char *)resp->end - (char *)resp->p; |
1065 | if (slack_bytes < COMPOUND_SLACK_SPACE | |
1066 | + COMPOUND_ERR_SLACK_SPACE) { | |
1067 | BUG_ON(slack_bytes < COMPOUND_ERR_SLACK_SPACE); | |
1da177e4 LT |
1068 | op->status = nfserr_resource; |
1069 | goto encode_op; | |
1070 | } | |
1071 | ||
b591480b BF |
1072 | opdesc = &nfsd4_ops[op->opnum]; |
1073 | ||
ca364317 | 1074 | if (!cstate->current_fh.fh_dentry) { |
27d630ec | 1075 | if (!(opdesc->op_flags & ALLOWED_WITHOUT_FH)) { |
42ca0993 BF |
1076 | op->status = nfserr_nofilehandle; |
1077 | goto encode_op; | |
1078 | } | |
eeac294e BF |
1079 | } else if (cstate->current_fh.fh_export->ex_fslocs.migrated && |
1080 | !(opdesc->op_flags & ALLOWED_ON_ABSENT_FS)) { | |
42ca0993 | 1081 | op->status = nfserr_moved; |
1da177e4 LT |
1082 | goto encode_op; |
1083 | } | |
b591480b BF |
1084 | |
1085 | if (opdesc->op_func) | |
1086 | op->status = opdesc->op_func(rqstp, cstate, &op->u); | |
1087 | else | |
1da177e4 | 1088 | BUG_ON(op->status == nfs_ok); |
1da177e4 LT |
1089 | |
1090 | encode_op: | |
49557cc7 | 1091 | /* Only from SEQUENCE */ |
da3846a2 AA |
1092 | if (resp->cstate.status == nfserr_replay_cache) { |
1093 | dprintk("%s NFS4.1 replay from cache\n", __func__); | |
abfabf8c | 1094 | status = op->status; |
da3846a2 AA |
1095 | goto out; |
1096 | } | |
a90b061c | 1097 | if (op->status == nfserr_replay_me) { |
a4f1706a | 1098 | op->replay = &cstate->replay_owner->so_replay; |
1da177e4 LT |
1099 | nfsd4_encode_replay(resp, op); |
1100 | status = op->status = op->replay->rp_status; | |
1101 | } else { | |
1102 | nfsd4_encode_operation(resp, op); | |
1103 | status = op->status; | |
1104 | } | |
0407717d BH |
1105 | |
1106 | dprintk("nfsv4 compound op %p opcnt %d #%d: %d: status %d\n", | |
1107 | args->ops, args->opcnt, resp->opcnt, op->opnum, | |
1108 | be32_to_cpu(status)); | |
1109 | ||
a4f1706a BF |
1110 | if (cstate->replay_owner) { |
1111 | nfs4_put_stateowner(cstate->replay_owner); | |
1112 | cstate->replay_owner = NULL; | |
1da177e4 | 1113 | } |
7e06b7f9 N |
1114 | /* XXX Ugh, we need to get rid of this kind of special case: */ |
1115 | if (op->opnum == OP_READ && op->u.read.rd_filp) | |
1116 | fput(op->u.read.rd_filp); | |
e2b20950 SA |
1117 | |
1118 | nfsd4_increment_op_stats(op->opnum); | |
1da177e4 | 1119 | } |
2f425878 AA |
1120 | if (!rqstp->rq_usedeferral && status == nfserr_dropit) { |
1121 | dprintk("%s Dropit - send NFS4ERR_DELAY\n", __func__); | |
1122 | status = nfserr_jukebox; | |
1123 | } | |
1da177e4 | 1124 | |
da3846a2 | 1125 | resp->cstate.status = status; |
e354d571 AA |
1126 | fh_put(&resp->cstate.current_fh); |
1127 | fh_put(&resp->cstate.save_fh); | |
1128 | BUG_ON(resp->cstate.replay_owner); | |
1da177e4 LT |
1129 | out: |
1130 | nfsd4_release_compoundargs(args); | |
2f425878 AA |
1131 | /* Reset deferral mechanism for RPC deferrals */ |
1132 | rqstp->rq_usedeferral = 1; | |
3b12cd98 | 1133 | dprintk("nfsv4 compound returned %d\n", ntohl(status)); |
1da177e4 LT |
1134 | return status; |
1135 | } | |
1136 | ||
20766016 | 1137 | static struct nfsd4_operation nfsd4_ops[] = { |
b591480b BF |
1138 | [OP_ACCESS] = { |
1139 | .op_func = (nfsd4op_func)nfsd4_access, | |
b001a1b6 | 1140 | .op_name = "OP_ACCESS", |
b591480b BF |
1141 | }, |
1142 | [OP_CLOSE] = { | |
1143 | .op_func = (nfsd4op_func)nfsd4_close, | |
b001a1b6 | 1144 | .op_name = "OP_CLOSE", |
b591480b BF |
1145 | }, |
1146 | [OP_COMMIT] = { | |
1147 | .op_func = (nfsd4op_func)nfsd4_commit, | |
b001a1b6 | 1148 | .op_name = "OP_COMMIT", |
b591480b BF |
1149 | }, |
1150 | [OP_CREATE] = { | |
1151 | .op_func = (nfsd4op_func)nfsd4_create, | |
b001a1b6 | 1152 | .op_name = "OP_CREATE", |
b591480b BF |
1153 | }, |
1154 | [OP_DELEGRETURN] = { | |
1155 | .op_func = (nfsd4op_func)nfsd4_delegreturn, | |
b001a1b6 | 1156 | .op_name = "OP_DELEGRETURN", |
b591480b BF |
1157 | }, |
1158 | [OP_GETATTR] = { | |
1159 | .op_func = (nfsd4op_func)nfsd4_getattr, | |
eeac294e | 1160 | .op_flags = ALLOWED_ON_ABSENT_FS, |
b001a1b6 | 1161 | .op_name = "OP_GETATTR", |
b591480b BF |
1162 | }, |
1163 | [OP_GETFH] = { | |
1164 | .op_func = (nfsd4op_func)nfsd4_getfh, | |
b001a1b6 | 1165 | .op_name = "OP_GETFH", |
b591480b BF |
1166 | }, |
1167 | [OP_LINK] = { | |
1168 | .op_func = (nfsd4op_func)nfsd4_link, | |
b001a1b6 | 1169 | .op_name = "OP_LINK", |
b591480b BF |
1170 | }, |
1171 | [OP_LOCK] = { | |
1172 | .op_func = (nfsd4op_func)nfsd4_lock, | |
b001a1b6 | 1173 | .op_name = "OP_LOCK", |
b591480b BF |
1174 | }, |
1175 | [OP_LOCKT] = { | |
1176 | .op_func = (nfsd4op_func)nfsd4_lockt, | |
b001a1b6 | 1177 | .op_name = "OP_LOCKT", |
b591480b BF |
1178 | }, |
1179 | [OP_LOCKU] = { | |
1180 | .op_func = (nfsd4op_func)nfsd4_locku, | |
b001a1b6 | 1181 | .op_name = "OP_LOCKU", |
b591480b BF |
1182 | }, |
1183 | [OP_LOOKUP] = { | |
1184 | .op_func = (nfsd4op_func)nfsd4_lookup, | |
b001a1b6 | 1185 | .op_name = "OP_LOOKUP", |
b591480b BF |
1186 | }, |
1187 | [OP_LOOKUPP] = { | |
1188 | .op_func = (nfsd4op_func)nfsd4_lookupp, | |
b001a1b6 | 1189 | .op_name = "OP_LOOKUPP", |
b591480b BF |
1190 | }, |
1191 | [OP_NVERIFY] = { | |
1192 | .op_func = (nfsd4op_func)nfsd4_nverify, | |
b001a1b6 | 1193 | .op_name = "OP_NVERIFY", |
b591480b BF |
1194 | }, |
1195 | [OP_OPEN] = { | |
1196 | .op_func = (nfsd4op_func)nfsd4_open, | |
b001a1b6 | 1197 | .op_name = "OP_OPEN", |
b591480b BF |
1198 | }, |
1199 | [OP_OPEN_CONFIRM] = { | |
1200 | .op_func = (nfsd4op_func)nfsd4_open_confirm, | |
b001a1b6 | 1201 | .op_name = "OP_OPEN_CONFIRM", |
b591480b BF |
1202 | }, |
1203 | [OP_OPEN_DOWNGRADE] = { | |
1204 | .op_func = (nfsd4op_func)nfsd4_open_downgrade, | |
b001a1b6 | 1205 | .op_name = "OP_OPEN_DOWNGRADE", |
b591480b BF |
1206 | }, |
1207 | [OP_PUTFH] = { | |
1208 | .op_func = (nfsd4op_func)nfsd4_putfh, | |
27d630ec | 1209 | .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS, |
b001a1b6 | 1210 | .op_name = "OP_PUTFH", |
b591480b | 1211 | }, |
eeac294e | 1212 | [OP_PUTPUBFH] = { |
a1c8c4d1 | 1213 | .op_func = (nfsd4op_func)nfsd4_putrootfh, |
27d630ec | 1214 | .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS, |
b001a1b6 | 1215 | .op_name = "OP_PUTPUBFH", |
eeac294e | 1216 | }, |
b591480b BF |
1217 | [OP_PUTROOTFH] = { |
1218 | .op_func = (nfsd4op_func)nfsd4_putrootfh, | |
27d630ec | 1219 | .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS, |
b001a1b6 | 1220 | .op_name = "OP_PUTROOTFH", |
b591480b BF |
1221 | }, |
1222 | [OP_READ] = { | |
1223 | .op_func = (nfsd4op_func)nfsd4_read, | |
b001a1b6 | 1224 | .op_name = "OP_READ", |
b591480b BF |
1225 | }, |
1226 | [OP_READDIR] = { | |
1227 | .op_func = (nfsd4op_func)nfsd4_readdir, | |
b001a1b6 | 1228 | .op_name = "OP_READDIR", |
b591480b BF |
1229 | }, |
1230 | [OP_READLINK] = { | |
1231 | .op_func = (nfsd4op_func)nfsd4_readlink, | |
b001a1b6 | 1232 | .op_name = "OP_READLINK", |
b591480b BF |
1233 | }, |
1234 | [OP_REMOVE] = { | |
1235 | .op_func = (nfsd4op_func)nfsd4_remove, | |
b001a1b6 | 1236 | .op_name = "OP_REMOVE", |
b591480b BF |
1237 | }, |
1238 | [OP_RENAME] = { | |
b001a1b6 | 1239 | .op_name = "OP_RENAME", |
b591480b BF |
1240 | .op_func = (nfsd4op_func)nfsd4_rename, |
1241 | }, | |
1242 | [OP_RENEW] = { | |
1243 | .op_func = (nfsd4op_func)nfsd4_renew, | |
27d630ec | 1244 | .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS, |
b001a1b6 | 1245 | .op_name = "OP_RENEW", |
b591480b BF |
1246 | }, |
1247 | [OP_RESTOREFH] = { | |
1248 | .op_func = (nfsd4op_func)nfsd4_restorefh, | |
27d630ec | 1249 | .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS, |
b001a1b6 | 1250 | .op_name = "OP_RESTOREFH", |
b591480b BF |
1251 | }, |
1252 | [OP_SAVEFH] = { | |
1253 | .op_func = (nfsd4op_func)nfsd4_savefh, | |
b001a1b6 | 1254 | .op_name = "OP_SAVEFH", |
b591480b | 1255 | }, |
dcb488a3 AA |
1256 | [OP_SECINFO] = { |
1257 | .op_func = (nfsd4op_func)nfsd4_secinfo, | |
b001a1b6 | 1258 | .op_name = "OP_SECINFO", |
dcb488a3 | 1259 | }, |
b591480b BF |
1260 | [OP_SETATTR] = { |
1261 | .op_func = (nfsd4op_func)nfsd4_setattr, | |
b001a1b6 | 1262 | .op_name = "OP_SETATTR", |
b591480b BF |
1263 | }, |
1264 | [OP_SETCLIENTID] = { | |
1265 | .op_func = (nfsd4op_func)nfsd4_setclientid, | |
27d630ec | 1266 | .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS, |
b001a1b6 | 1267 | .op_name = "OP_SETCLIENTID", |
b591480b BF |
1268 | }, |
1269 | [OP_SETCLIENTID_CONFIRM] = { | |
1270 | .op_func = (nfsd4op_func)nfsd4_setclientid_confirm, | |
27d630ec | 1271 | .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS, |
b001a1b6 | 1272 | .op_name = "OP_SETCLIENTID_CONFIRM", |
b591480b BF |
1273 | }, |
1274 | [OP_VERIFY] = { | |
1275 | .op_func = (nfsd4op_func)nfsd4_verify, | |
b001a1b6 | 1276 | .op_name = "OP_VERIFY", |
b591480b BF |
1277 | }, |
1278 | [OP_WRITE] = { | |
1279 | .op_func = (nfsd4op_func)nfsd4_write, | |
b001a1b6 | 1280 | .op_name = "OP_WRITE", |
b591480b BF |
1281 | }, |
1282 | [OP_RELEASE_LOCKOWNER] = { | |
1283 | .op_func = (nfsd4op_func)nfsd4_release_lockowner, | |
27d630ec | 1284 | .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS, |
b001a1b6 | 1285 | .op_name = "OP_RELEASE_LOCKOWNER", |
b591480b | 1286 | }, |
069b6ad4 AA |
1287 | |
1288 | /* NFSv4.1 operations */ | |
1289 | [OP_EXCHANGE_ID] = { | |
1290 | .op_func = (nfsd4op_func)nfsd4_exchange_id, | |
f9bb94c4 | 1291 | .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP, |
069b6ad4 AA |
1292 | .op_name = "OP_EXCHANGE_ID", |
1293 | }, | |
1294 | [OP_CREATE_SESSION] = { | |
1295 | .op_func = (nfsd4op_func)nfsd4_create_session, | |
f9bb94c4 | 1296 | .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP, |
069b6ad4 AA |
1297 | .op_name = "OP_CREATE_SESSION", |
1298 | }, | |
1299 | [OP_DESTROY_SESSION] = { | |
1300 | .op_func = (nfsd4op_func)nfsd4_destroy_session, | |
f9bb94c4 | 1301 | .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP, |
069b6ad4 AA |
1302 | .op_name = "OP_DESTROY_SESSION", |
1303 | }, | |
1304 | [OP_SEQUENCE] = { | |
1305 | .op_func = (nfsd4op_func)nfsd4_sequence, | |
f9bb94c4 | 1306 | .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP, |
069b6ad4 AA |
1307 | .op_name = "OP_SEQUENCE", |
1308 | }, | |
b591480b BF |
1309 | }; |
1310 | ||
f1c7f79b | 1311 | static const char *nfsd4_op_name(unsigned opnum) |
b001a1b6 BH |
1312 | { |
1313 | if (opnum < ARRAY_SIZE(nfsd4_ops)) | |
1314 | return nfsd4_ops[opnum].op_name; | |
1315 | return "unknown_operation"; | |
1316 | } | |
1317 | ||
1da177e4 | 1318 | #define nfsd4_voidres nfsd4_voidargs |
1da177e4 LT |
1319 | struct nfsd4_voidargs { int dummy; }; |
1320 | ||
1da177e4 LT |
1321 | /* |
1322 | * TODO: At the present time, the NFSv4 server does not do XID caching | |
1323 | * of requests. Implementing XID caching would not be a serious problem, | |
1324 | * although it would require a mild change in interfaces since one | |
1325 | * doesn't know whether an NFSv4 request is idempotent until after the | |
1326 | * XDR decode. However, XID caching totally confuses pynfs (Peter | |
1327 | * Astrand's regression testsuite for NFSv4 servers), which reuses | |
1328 | * XID's liberally, so I've left it unimplemented until pynfs generates | |
1329 | * better XID's. | |
1330 | */ | |
1331 | static struct svc_procedure nfsd_procedures4[2] = { | |
0a93a47f YZ |
1332 | [NFSPROC4_NULL] = { |
1333 | .pc_func = (svc_procfunc) nfsd4_proc_null, | |
1334 | .pc_encode = (kxdrproc_t) nfs4svc_encode_voidres, | |
1335 | .pc_argsize = sizeof(struct nfsd4_voidargs), | |
1336 | .pc_ressize = sizeof(struct nfsd4_voidres), | |
1337 | .pc_cachetype = RC_NOCACHE, | |
1338 | .pc_xdrressize = 1, | |
1339 | }, | |
1340 | [NFSPROC4_COMPOUND] = { | |
1341 | .pc_func = (svc_procfunc) nfsd4_proc_compound, | |
1342 | .pc_decode = (kxdrproc_t) nfs4svc_decode_compoundargs, | |
1343 | .pc_encode = (kxdrproc_t) nfs4svc_encode_compoundres, | |
1344 | .pc_argsize = sizeof(struct nfsd4_compoundargs), | |
1345 | .pc_ressize = sizeof(struct nfsd4_compoundres), | |
1346 | .pc_cachetype = RC_NOCACHE, | |
1347 | .pc_xdrressize = NFSD_BUFSIZE/4, | |
1348 | }, | |
1da177e4 LT |
1349 | }; |
1350 | ||
1351 | struct svc_version nfsd_version4 = { | |
1352 | .vs_vers = 4, | |
1353 | .vs_nproc = 2, | |
1354 | .vs_proc = nfsd_procedures4, | |
1355 | .vs_dispatch = nfsd_dispatch, | |
1356 | .vs_xdrsize = NFS4_SVC_XDRSIZE, | |
1357 | }; | |
1358 | ||
1359 | /* | |
1360 | * Local variables: | |
1361 | * c-basic-offset: 8 | |
1362 | * End: | |
1363 | */ |