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> |
b0cb9085 | 36 | #include <linux/falloc.h> |
5a0e3ad6 | 37 | #include <linux/slab.h> |
1da177e4 | 38 | |
58e7b33a | 39 | #include "idmap.h" |
9a74af21 BH |
40 | #include "cache.h" |
41 | #include "xdr4.h" | |
0a3adade | 42 | #include "vfs.h" |
8b70484c | 43 | #include "current_stateid.h" |
3320fef1 | 44 | #include "netns.h" |
4ac7249e | 45 | #include "acl.h" |
1da177e4 | 46 | |
18032ca0 DQ |
47 | #ifdef CONFIG_NFSD_V4_SECURITY_LABEL |
48 | #include <linux/security.h> | |
49 | ||
50 | static inline void | |
51 | nfsd4_security_inode_setsecctx(struct svc_fh *resfh, struct xdr_netobj *label, u32 *bmval) | |
52 | { | |
53 | struct inode *inode = resfh->fh_dentry->d_inode; | |
54 | int status; | |
55 | ||
56 | mutex_lock(&inode->i_mutex); | |
57 | status = security_inode_setsecctx(resfh->fh_dentry, | |
58 | label->data, label->len); | |
59 | mutex_unlock(&inode->i_mutex); | |
60 | ||
61 | if (status) | |
62 | /* | |
63 | * XXX: We should really fail the whole open, but we may | |
64 | * already have created a new file, so it may be too | |
65 | * late. For now this seems the least of evils: | |
66 | */ | |
67 | bmval[2] &= ~FATTR4_WORD2_SECURITY_LABEL; | |
68 | ||
69 | return; | |
70 | } | |
71 | #else | |
72 | static inline void | |
73 | nfsd4_security_inode_setsecctx(struct svc_fh *resfh, struct xdr_netobj *label, u32 *bmval) | |
74 | { } | |
75 | #endif | |
76 | ||
1da177e4 LT |
77 | #define NFSDDBG_FACILITY NFSDDBG_PROC |
78 | ||
3c8e0316 YZ |
79 | static u32 nfsd_attrmask[] = { |
80 | NFSD_WRITEABLE_ATTRS_WORD0, | |
81 | NFSD_WRITEABLE_ATTRS_WORD1, | |
82 | NFSD_WRITEABLE_ATTRS_WORD2 | |
83 | }; | |
84 | ||
85 | static u32 nfsd41_ex_attrmask[] = { | |
86 | NFSD_SUPPATTR_EXCLCREAT_WORD0, | |
87 | NFSD_SUPPATTR_EXCLCREAT_WORD1, | |
88 | NFSD_SUPPATTR_EXCLCREAT_WORD2 | |
89 | }; | |
90 | ||
91 | static __be32 | |
92 | check_attr_support(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, | |
93 | u32 *bmval, u32 *writable) | |
94 | { | |
95 | struct dentry *dentry = cstate->current_fh.fh_dentry; | |
3c8e0316 YZ |
96 | |
97 | /* | |
98 | * Check about attributes are supported by the NFSv4 server or not. | |
99 | * According to spec, unsupported attributes return ERR_ATTRNOTSUPP. | |
100 | */ | |
101 | if ((bmval[0] & ~nfsd_suppattrs0(cstate->minorversion)) || | |
102 | (bmval[1] & ~nfsd_suppattrs1(cstate->minorversion)) || | |
103 | (bmval[2] & ~nfsd_suppattrs2(cstate->minorversion))) | |
104 | return nfserr_attrnotsupp; | |
105 | ||
106 | /* | |
a06b1261 | 107 | * Check FATTR4_WORD0_ACL can be supported |
3c8e0316 YZ |
108 | * in current environment or not. |
109 | */ | |
110 | if (bmval[0] & FATTR4_WORD0_ACL) { | |
111 | if (!IS_POSIXACL(dentry->d_inode)) | |
112 | return nfserr_attrnotsupp; | |
113 | } | |
3c8e0316 YZ |
114 | |
115 | /* | |
116 | * According to spec, read-only attributes return ERR_INVAL. | |
117 | */ | |
118 | if (writable) { | |
119 | if ((bmval[0] & ~writable[0]) || (bmval[1] & ~writable[1]) || | |
120 | (bmval[2] & ~writable[2])) | |
121 | return nfserr_inval; | |
122 | } | |
123 | ||
124 | return nfs_ok; | |
125 | } | |
126 | ||
127 | static __be32 | |
128 | nfsd4_check_open_attributes(struct svc_rqst *rqstp, | |
129 | struct nfsd4_compound_state *cstate, struct nfsd4_open *open) | |
130 | { | |
131 | __be32 status = nfs_ok; | |
132 | ||
133 | if (open->op_create == NFS4_OPEN_CREATE) { | |
134 | if (open->op_createmode == NFS4_CREATE_UNCHECKED | |
135 | || open->op_createmode == NFS4_CREATE_GUARDED) | |
136 | status = check_attr_support(rqstp, cstate, | |
137 | open->op_bmval, nfsd_attrmask); | |
138 | else if (open->op_createmode == NFS4_CREATE_EXCLUSIVE4_1) | |
139 | status = check_attr_support(rqstp, cstate, | |
140 | open->op_bmval, nfsd41_ex_attrmask); | |
141 | } | |
142 | ||
143 | return status; | |
144 | } | |
145 | ||
9208faf2 YZ |
146 | static int |
147 | is_create_with_attrs(struct nfsd4_open *open) | |
148 | { | |
149 | return open->op_create == NFS4_OPEN_CREATE | |
150 | && (open->op_createmode == NFS4_CREATE_UNCHECKED | |
151 | || open->op_createmode == NFS4_CREATE_GUARDED | |
152 | || open->op_createmode == NFS4_CREATE_EXCLUSIVE4_1); | |
153 | } | |
154 | ||
155 | /* | |
156 | * if error occurs when setting the acl, just clear the acl bit | |
157 | * in the returned attr bitmap. | |
158 | */ | |
159 | static void | |
160 | do_set_nfs4_acl(struct svc_rqst *rqstp, struct svc_fh *fhp, | |
161 | struct nfs4_acl *acl, u32 *bmval) | |
162 | { | |
163 | __be32 status; | |
164 | ||
165 | status = nfsd4_set_nfs4_acl(rqstp, fhp, acl); | |
166 | if (status) | |
167 | /* | |
168 | * We should probably fail the whole open at this point, | |
169 | * but we've already created the file, so it's too late; | |
170 | * So this seems the least of evils: | |
171 | */ | |
172 | bmval[0] &= ~FATTR4_WORD0_ACL; | |
173 | } | |
174 | ||
1da177e4 LT |
175 | static inline void |
176 | fh_dup2(struct svc_fh *dst, struct svc_fh *src) | |
177 | { | |
178 | fh_put(dst); | |
179 | dget(src->fh_dentry); | |
180 | if (src->fh_export) | |
bf18f163 | 181 | exp_get(src->fh_export); |
1da177e4 LT |
182 | *dst = *src; |
183 | } | |
184 | ||
b37ad28b | 185 | static __be32 |
dc730e17 | 186 | do_open_permission(struct svc_rqst *rqstp, struct svc_fh *current_fh, struct nfsd4_open *open, int accmode) |
1da177e4 | 187 | { |
b37ad28b | 188 | __be32 status; |
1da177e4 LT |
189 | |
190 | if (open->op_truncate && | |
191 | !(open->op_share_access & NFS4_SHARE_ACCESS_WRITE)) | |
192 | return nfserr_inval; | |
193 | ||
a043226b BF |
194 | accmode |= NFSD_MAY_READ_IF_EXEC; |
195 | ||
1da177e4 | 196 | if (open->op_share_access & NFS4_SHARE_ACCESS_READ) |
8837abca | 197 | accmode |= NFSD_MAY_READ; |
9801d8a3 | 198 | if (open->op_share_access & NFS4_SHARE_ACCESS_WRITE) |
8837abca | 199 | accmode |= (NFSD_MAY_WRITE | NFSD_MAY_TRUNC); |
57ecb34f | 200 | if (open->op_share_deny & NFS4_SHARE_DENY_READ) |
8837abca | 201 | accmode |= NFSD_MAY_WRITE; |
1da177e4 LT |
202 | |
203 | status = fh_verify(rqstp, current_fh, S_IFREG, accmode); | |
204 | ||
205 | return status; | |
206 | } | |
207 | ||
aadab6c6 BF |
208 | static __be32 nfsd_check_obj_isreg(struct svc_fh *fh) |
209 | { | |
210 | umode_t mode = fh->fh_dentry->d_inode->i_mode; | |
211 | ||
212 | if (S_ISREG(mode)) | |
213 | return nfs_ok; | |
214 | if (S_ISDIR(mode)) | |
215 | return nfserr_isdir; | |
216 | /* | |
217 | * Using err_symlink as our catch-all case may look odd; but | |
218 | * there's no other obvious error for this case in 4.0, and we | |
219 | * happen to know that it will cause the linux v4 client to do | |
220 | * the right thing on attempts to open something other than a | |
221 | * regular file. | |
222 | */ | |
223 | return nfserr_symlink; | |
224 | } | |
225 | ||
bbc9c36c BF |
226 | static void nfsd4_set_open_owner_reply_cache(struct nfsd4_compound_state *cstate, struct nfsd4_open *open, struct svc_fh *resfh) |
227 | { | |
228 | if (nfsd4_has_session(cstate)) | |
229 | return; | |
230 | fh_copy_shallow(&open->op_openowner->oo_owner.so_replay.rp_openfh, | |
231 | &resfh->fh_handle); | |
232 | } | |
233 | ||
b37ad28b | 234 | static __be32 |
c0e6bee4 | 235 | do_open_lookup(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, struct nfsd4_open *open, struct svc_fh **resfh) |
1da177e4 | 236 | { |
bbc9c36c | 237 | struct svc_fh *current_fh = &cstate->current_fh; |
7007c90f | 238 | int accmode; |
b37ad28b | 239 | __be32 status; |
1da177e4 | 240 | |
c0e6bee4 BF |
241 | *resfh = kmalloc(sizeof(struct svc_fh), GFP_KERNEL); |
242 | if (!*resfh) | |
59deeb9e | 243 | return nfserr_jukebox; |
c0e6bee4 | 244 | fh_init(*resfh, NFS4_FHSIZE); |
1da177e4 LT |
245 | open->op_truncate = 0; |
246 | ||
247 | if (open->op_create) { | |
79fb54ab BH |
248 | /* FIXME: check session persistence and pnfs flags. |
249 | * The nfsv4.1 spec requires the following semantics: | |
250 | * | |
251 | * Persistent | pNFS | Server REQUIRED | Client Allowed | |
252 | * Reply Cache | server | | | |
253 | * -------------+--------+-----------------+-------------------- | |
254 | * no | no | EXCLUSIVE4_1 | EXCLUSIVE4_1 | |
255 | * | | | (SHOULD) | |
256 | * | | and EXCLUSIVE4 | or EXCLUSIVE4 | |
257 | * | | | (SHOULD NOT) | |
258 | * no | yes | EXCLUSIVE4_1 | EXCLUSIVE4_1 | |
259 | * yes | no | GUARDED4 | GUARDED4 | |
260 | * yes | yes | GUARDED4 | GUARDED4 | |
261 | */ | |
262 | ||
1da177e4 LT |
263 | /* |
264 | * Note: create modes (UNCHECKED,GUARDED...) are the same | |
ac6721a1 | 265 | * in NFSv4 as in v3 except EXCLUSIVE4_1. |
1da177e4 | 266 | */ |
ac6721a1 | 267 | status = do_nfsd_create(rqstp, current_fh, open->op_fname.data, |
1da177e4 | 268 | open->op_fname.len, &open->op_iattr, |
c0e6bee4 | 269 | *resfh, open->op_createmode, |
749997e5 | 270 | (u32 *)open->op_verf.data, |
856121b2 | 271 | &open->op_truncate, &open->op_created); |
749997e5 | 272 | |
18032ca0 | 273 | if (!status && open->op_label.len) |
c0e6bee4 | 274 | nfsd4_security_inode_setsecctx(*resfh, &open->op_label, open->op_bmval); |
18032ca0 | 275 | |
99f88726 BF |
276 | /* |
277 | * Following rfc 3530 14.2.16, use the returned bitmask | |
278 | * to indicate which attributes we used to store the | |
279 | * verifier: | |
749997e5 JL |
280 | */ |
281 | if (open->op_createmode == NFS4_CREATE_EXCLUSIVE && status == 0) | |
99f88726 | 282 | open->op_bmval[1] = (FATTR4_WORD1_TIME_ACCESS | |
9dc4e6c4 | 283 | FATTR4_WORD1_TIME_MODIFY); |
4335723e BF |
284 | } else |
285 | /* | |
286 | * Note this may exit with the parent still locked. | |
287 | * We will hold the lock until nfsd4_open's final | |
288 | * lookup, to prevent renames or unlinks until we've had | |
289 | * a chance to an acquire a delegation if appropriate. | |
290 | */ | |
1da177e4 | 291 | status = nfsd_lookup(rqstp, current_fh, |
c0e6bee4 | 292 | open->op_fname.data, open->op_fname.len, *resfh); |
9dc4e6c4 BF |
293 | if (status) |
294 | goto out; | |
c0e6bee4 | 295 | status = nfsd_check_obj_isreg(*resfh); |
af85852d BF |
296 | if (status) |
297 | goto out; | |
1da177e4 | 298 | |
9208faf2 | 299 | if (is_create_with_attrs(open) && open->op_acl != NULL) |
c0e6bee4 | 300 | do_set_nfs4_acl(rqstp, *resfh, open->op_acl, open->op_bmval); |
9208faf2 | 301 | |
c0e6bee4 | 302 | nfsd4_set_open_owner_reply_cache(cstate, open, *resfh); |
7007c90f | 303 | accmode = NFSD_MAY_NOP; |
89f6c336 BF |
304 | if (open->op_created || |
305 | open->op_claim_type == NFS4_OPEN_CLAIM_DELEGATE_CUR) | |
7007c90f | 306 | accmode |= NFSD_MAY_OWNER_OVERRIDE; |
c0e6bee4 | 307 | status = do_open_permission(rqstp, *resfh, open, accmode); |
41fd1e42 | 308 | set_change_info(&open->op_cinfo, current_fh); |
af85852d | 309 | out: |
1da177e4 LT |
310 | return status; |
311 | } | |
312 | ||
b37ad28b | 313 | static __be32 |
bbc9c36c | 314 | do_open_fhandle(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, struct nfsd4_open *open) |
1da177e4 | 315 | { |
bbc9c36c | 316 | struct svc_fh *current_fh = &cstate->current_fh; |
b37ad28b | 317 | __be32 status; |
9f415eb2 | 318 | int accmode = 0; |
1da177e4 | 319 | |
1da177e4 LT |
320 | /* We don't know the target directory, and therefore can not |
321 | * set the change info | |
322 | */ | |
323 | ||
324 | memset(&open->op_cinfo, 0, sizeof(struct nfsd4_change_info)); | |
325 | ||
bbc9c36c | 326 | nfsd4_set_open_owner_reply_cache(cstate, open, current_fh); |
1da177e4 LT |
327 | |
328 | open->op_truncate = (open->op_iattr.ia_valid & ATTR_SIZE) && | |
329 | (open->op_iattr.ia_size == 0); | |
9f415eb2 BF |
330 | /* |
331 | * In the delegation case, the client is telling us about an | |
332 | * open that it *already* performed locally, some time ago. We | |
333 | * should let it succeed now if possible. | |
334 | * | |
335 | * In the case of a CLAIM_FH open, on the other hand, the client | |
336 | * may be counting on us to enforce permissions (the Linux 4.1 | |
337 | * client uses this for normal opens, for example). | |
338 | */ | |
339 | if (open->op_claim_type == NFS4_OPEN_CLAIM_DELEG_CUR_FH) | |
340 | accmode = NFSD_MAY_OWNER_OVERRIDE; | |
1da177e4 | 341 | |
9f415eb2 | 342 | status = do_open_permission(rqstp, current_fh, open, accmode); |
1da177e4 LT |
343 | |
344 | return status; | |
345 | } | |
346 | ||
60adfc50 AA |
347 | static void |
348 | copy_clientid(clientid_t *clid, struct nfsd4_session *session) | |
349 | { | |
350 | struct nfsd4_sessionid *sid = | |
351 | (struct nfsd4_sessionid *)session->se_sessionid.data; | |
352 | ||
353 | clid->cl_boot = sid->clientid.cl_boot; | |
354 | clid->cl_id = sid->clientid.cl_id; | |
355 | } | |
1da177e4 | 356 | |
7191155b | 357 | static __be32 |
ca364317 | 358 | nfsd4_open(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
a4f1706a | 359 | struct nfsd4_open *open) |
1da177e4 | 360 | { |
b37ad28b | 361 | __be32 status; |
c0e6bee4 | 362 | struct svc_fh *resfh = NULL; |
6668958f | 363 | struct nfsd4_compoundres *resp; |
3320fef1 SK |
364 | struct net *net = SVC_NET(rqstp); |
365 | struct nfsd_net *nn = net_generic(net, nfsd_net_id); | |
6668958f | 366 | |
fe0750e5 | 367 | dprintk("NFSD: nfsd4_open filename %.*s op_openowner %p\n", |
1da177e4 | 368 | (int)open->op_fname.len, open->op_fname.data, |
fe0750e5 | 369 | open->op_openowner); |
1da177e4 | 370 | |
1da177e4 LT |
371 | /* This check required by spec. */ |
372 | if (open->op_create && open->op_claim_type != NFS4_OPEN_CLAIM_NULL) | |
373 | return nfserr_inval; | |
374 | ||
856121b2 | 375 | open->op_created = 0; |
ab1350b2 MJ |
376 | /* |
377 | * RFC5661 18.51.3 | |
378 | * Before RECLAIM_COMPLETE done, server should deny new lock | |
379 | */ | |
380 | if (nfsd4_has_session(cstate) && | |
a52d726b JL |
381 | !test_bit(NFSD4_CLIENT_RECLAIM_COMPLETE, |
382 | &cstate->session->se_client->cl_flags) && | |
ab1350b2 MJ |
383 | open->op_claim_type != NFS4_OPEN_CLAIM_PREVIOUS) |
384 | return nfserr_grace; | |
385 | ||
60adfc50 AA |
386 | if (nfsd4_has_session(cstate)) |
387 | copy_clientid(&open->op_clientid, cstate->session); | |
388 | ||
1da177e4 | 389 | /* check seqid for replay. set nfs4_owner */ |
6668958f | 390 | resp = rqstp->rq_resp; |
3320fef1 | 391 | status = nfsd4_process_open1(&resp->cstate, open, nn); |
a90b061c | 392 | if (status == nfserr_replay_me) { |
fe0750e5 | 393 | struct nfs4_replay *rp = &open->op_openowner->oo_owner.so_replay; |
ca364317 | 394 | fh_put(&cstate->current_fh); |
a4773c08 BF |
395 | fh_copy_shallow(&cstate->current_fh.fh_handle, |
396 | &rp->rp_openfh); | |
8837abca | 397 | status = fh_verify(rqstp, &cstate->current_fh, 0, NFSD_MAY_NOP); |
1da177e4 LT |
398 | if (status) |
399 | dprintk("nfsd4_open: replay failed" | |
400 | " restoring previous filehandle\n"); | |
401 | else | |
a90b061c | 402 | status = nfserr_replay_me; |
1da177e4 LT |
403 | } |
404 | if (status) | |
405 | goto out; | |
9d313b17 BF |
406 | if (open->op_xdr_error) { |
407 | status = open->op_xdr_error; | |
408 | goto out; | |
409 | } | |
fb553c0f | 410 | |
3c8e0316 YZ |
411 | status = nfsd4_check_open_attributes(rqstp, cstate, open); |
412 | if (status) | |
413 | goto out; | |
414 | ||
fb553c0f BF |
415 | /* Openowner is now set, so sequence id will get bumped. Now we need |
416 | * these checks before we do any creates: */ | |
cbd0d51a | 417 | status = nfserr_grace; |
3320fef1 | 418 | if (locks_in_grace(net) && open->op_claim_type != NFS4_OPEN_CLAIM_PREVIOUS) |
cbd0d51a BF |
419 | goto out; |
420 | status = nfserr_no_grace; | |
3320fef1 | 421 | if (!locks_in_grace(net) && open->op_claim_type == NFS4_OPEN_CLAIM_PREVIOUS) |
cbd0d51a | 422 | goto out; |
fb553c0f | 423 | |
1da177e4 | 424 | switch (open->op_claim_type) { |
0dd3c192 | 425 | case NFS4_OPEN_CLAIM_DELEGATE_CUR: |
1da177e4 | 426 | case NFS4_OPEN_CLAIM_NULL: |
c0e6bee4 | 427 | status = do_open_lookup(rqstp, cstate, open, &resfh); |
1da177e4 LT |
428 | if (status) |
429 | goto out; | |
430 | break; | |
431 | case NFS4_OPEN_CLAIM_PREVIOUS: | |
3320fef1 | 432 | status = nfs4_check_open_reclaim(&open->op_clientid, |
0fe492db | 433 | cstate, nn); |
0cf99b91 MJ |
434 | if (status) |
435 | goto out; | |
ba5378b6 | 436 | open->op_openowner->oo_flags |= NFS4_OO_CONFIRMED; |
8b289b2c BF |
437 | case NFS4_OPEN_CLAIM_FH: |
438 | case NFS4_OPEN_CLAIM_DELEG_CUR_FH: | |
bbc9c36c | 439 | status = do_open_fhandle(rqstp, cstate, open); |
1da177e4 LT |
440 | if (status) |
441 | goto out; | |
c0e6bee4 | 442 | resfh = &cstate->current_fh; |
1da177e4 | 443 | break; |
8b289b2c | 444 | case NFS4_OPEN_CLAIM_DELEG_PREV_FH: |
1da177e4 | 445 | case NFS4_OPEN_CLAIM_DELEGATE_PREV: |
2fdada03 | 446 | dprintk("NFSD: unsupported OPEN claim type %d\n", |
1da177e4 LT |
447 | open->op_claim_type); |
448 | status = nfserr_notsupp; | |
449 | goto out; | |
450 | default: | |
2fdada03 | 451 | dprintk("NFSD: Invalid OPEN claim type %d\n", |
1da177e4 LT |
452 | open->op_claim_type); |
453 | status = nfserr_inval; | |
454 | goto out; | |
455 | } | |
456 | /* | |
457 | * nfsd4_process_open2() does the actual opening of the file. If | |
458 | * successful, it (1) truncates the file if open->op_truncate was | |
459 | * set, (2) sets open->op_stateid, (3) sets open->op_delegation. | |
460 | */ | |
c0e6bee4 | 461 | status = nfsd4_process_open2(rqstp, resfh, open); |
b3fbfe0e JL |
462 | WARN(status && open->op_created, |
463 | "nfsd4_process_open2 failed to open newly-created file! status=%u\n", | |
464 | be32_to_cpu(status)); | |
1da177e4 | 465 | out: |
c0e6bee4 BF |
466 | if (resfh && resfh != &cstate->current_fh) { |
467 | fh_dup2(&cstate->current_fh, resfh); | |
468 | fh_put(resfh); | |
469 | kfree(resfh); | |
470 | } | |
58fb12e6 | 471 | nfsd4_cleanup_open_state(cstate, open, status); |
9411b1d4 | 472 | nfsd4_bump_seqid(cstate, status); |
1da177e4 LT |
473 | return status; |
474 | } | |
475 | ||
9d313b17 BF |
476 | /* |
477 | * OPEN is the only seqid-mutating operation whose decoding can fail | |
478 | * with a seqid-mutating error (specifically, decoding of user names in | |
479 | * the attributes). Therefore we have to do some processing to look up | |
480 | * the stateowner so that we can bump the seqid. | |
481 | */ | |
482 | static __be32 nfsd4_open_omfg(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, struct nfsd4_op *op) | |
483 | { | |
484 | struct nfsd4_open *open = (struct nfsd4_open *)&op->u; | |
485 | ||
486 | if (!seqid_mutating_err(ntohl(op->status))) | |
487 | return op->status; | |
488 | if (nfsd4_has_session(cstate)) | |
489 | return op->status; | |
490 | open->op_xdr_error = op->status; | |
491 | return nfsd4_open(rqstp, cstate, open); | |
492 | } | |
493 | ||
1da177e4 LT |
494 | /* |
495 | * filehandle-manipulating ops. | |
496 | */ | |
7191155b | 497 | static __be32 |
b591480b BF |
498 | nfsd4_getfh(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
499 | struct svc_fh **getfh) | |
1da177e4 | 500 | { |
ca364317 | 501 | if (!cstate->current_fh.fh_dentry) |
1da177e4 LT |
502 | return nfserr_nofilehandle; |
503 | ||
ca364317 | 504 | *getfh = &cstate->current_fh; |
1da177e4 LT |
505 | return nfs_ok; |
506 | } | |
507 | ||
7191155b | 508 | static __be32 |
ca364317 BF |
509 | nfsd4_putfh(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
510 | struct nfsd4_putfh *putfh) | |
1da177e4 | 511 | { |
ca364317 BF |
512 | fh_put(&cstate->current_fh); |
513 | cstate->current_fh.fh_handle.fh_size = putfh->pf_fhlen; | |
514 | memcpy(&cstate->current_fh.fh_handle.fh_base, putfh->pf_fhval, | |
515 | putfh->pf_fhlen); | |
68d93184 | 516 | return fh_verify(rqstp, &cstate->current_fh, 0, NFSD_MAY_BYPASS_GSS); |
1da177e4 LT |
517 | } |
518 | ||
7191155b | 519 | static __be32 |
b591480b BF |
520 | nfsd4_putrootfh(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
521 | void *arg) | |
1da177e4 | 522 | { |
b37ad28b | 523 | __be32 status; |
1da177e4 | 524 | |
ca364317 | 525 | fh_put(&cstate->current_fh); |
df547efb | 526 | status = exp_pseudoroot(rqstp, &cstate->current_fh); |
1da177e4 LT |
527 | return status; |
528 | } | |
529 | ||
7191155b | 530 | static __be32 |
b591480b BF |
531 | nfsd4_restorefh(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
532 | void *arg) | |
1da177e4 | 533 | { |
ca364317 | 534 | if (!cstate->save_fh.fh_dentry) |
1da177e4 LT |
535 | return nfserr_restorefh; |
536 | ||
ca364317 | 537 | fh_dup2(&cstate->current_fh, &cstate->save_fh); |
37c593c5 TM |
538 | if (HAS_STATE_ID(cstate, SAVED_STATE_ID_FLAG)) { |
539 | memcpy(&cstate->current_stateid, &cstate->save_stateid, sizeof(stateid_t)); | |
540 | SET_STATE_ID(cstate, CURRENT_STATE_ID_FLAG); | |
541 | } | |
1da177e4 LT |
542 | return nfs_ok; |
543 | } | |
544 | ||
7191155b | 545 | static __be32 |
b591480b BF |
546 | nfsd4_savefh(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
547 | void *arg) | |
1da177e4 | 548 | { |
ca364317 | 549 | if (!cstate->current_fh.fh_dentry) |
1da177e4 LT |
550 | return nfserr_nofilehandle; |
551 | ||
ca364317 | 552 | fh_dup2(&cstate->save_fh, &cstate->current_fh); |
37c593c5 TM |
553 | if (HAS_STATE_ID(cstate, CURRENT_STATE_ID_FLAG)) { |
554 | memcpy(&cstate->save_stateid, &cstate->current_stateid, sizeof(stateid_t)); | |
555 | SET_STATE_ID(cstate, SAVED_STATE_ID_FLAG); | |
556 | } | |
1da177e4 LT |
557 | return nfs_ok; |
558 | } | |
559 | ||
560 | /* | |
561 | * misc nfsv4 ops | |
562 | */ | |
7191155b | 563 | static __be32 |
ca364317 BF |
564 | nfsd4_access(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
565 | struct nfsd4_access *access) | |
1da177e4 LT |
566 | { |
567 | if (access->ac_req_access & ~NFS3_ACCESS_FULL) | |
568 | return nfserr_inval; | |
569 | ||
570 | access->ac_resp_access = access->ac_req_access; | |
ca364317 BF |
571 | return nfsd_access(rqstp, &cstate->current_fh, &access->ac_resp_access, |
572 | &access->ac_supported); | |
1da177e4 LT |
573 | } |
574 | ||
b9c0ef85 | 575 | static void gen_boot_verifier(nfs4_verifier *verifier, struct net *net) |
ab4684d1 CL |
576 | { |
577 | __be32 verf[2]; | |
b9c0ef85 | 578 | struct nfsd_net *nn = net_generic(net, nfsd_net_id); |
ab4684d1 | 579 | |
f419992c JL |
580 | /* |
581 | * This is opaque to client, so no need to byte-swap. Use | |
582 | * __force to keep sparse happy | |
583 | */ | |
584 | verf[0] = (__force __be32)nn->nfssvc_boot.tv_sec; | |
585 | verf[1] = (__force __be32)nn->nfssvc_boot.tv_usec; | |
ab4684d1 CL |
586 | memcpy(verifier->data, verf, sizeof(verifier->data)); |
587 | } | |
588 | ||
7191155b | 589 | static __be32 |
ca364317 BF |
590 | nfsd4_commit(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
591 | struct nfsd4_commit *commit) | |
1da177e4 | 592 | { |
b9c0ef85 | 593 | gen_boot_verifier(&commit->co_verf, SVC_NET(rqstp)); |
75c096f7 | 594 | return nfsd_commit(rqstp, &cstate->current_fh, commit->co_offset, |
ca364317 | 595 | commit->co_count); |
1da177e4 LT |
596 | } |
597 | ||
b37ad28b | 598 | static __be32 |
ca364317 BF |
599 | nfsd4_create(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
600 | struct nfsd4_create *create) | |
1da177e4 LT |
601 | { |
602 | struct svc_fh resfh; | |
b37ad28b | 603 | __be32 status; |
1da177e4 LT |
604 | dev_t rdev; |
605 | ||
606 | fh_init(&resfh, NFS4_FHSIZE); | |
607 | ||
8837abca MS |
608 | status = fh_verify(rqstp, &cstate->current_fh, S_IFDIR, |
609 | NFSD_MAY_CREATE); | |
1da177e4 LT |
610 | if (status) |
611 | return status; | |
612 | ||
3c8e0316 YZ |
613 | status = check_attr_support(rqstp, cstate, create->cr_bmval, |
614 | nfsd_attrmask); | |
615 | if (status) | |
616 | return status; | |
617 | ||
1da177e4 LT |
618 | switch (create->cr_type) { |
619 | case NF4LNK: | |
ca364317 BF |
620 | status = nfsd_symlink(rqstp, &cstate->current_fh, |
621 | create->cr_name, create->cr_namelen, | |
1e444f5b | 622 | create->cr_data, &resfh); |
1da177e4 LT |
623 | break; |
624 | ||
625 | case NF4BLK: | |
626 | rdev = MKDEV(create->cr_specdata1, create->cr_specdata2); | |
627 | if (MAJOR(rdev) != create->cr_specdata1 || | |
628 | MINOR(rdev) != create->cr_specdata2) | |
629 | return nfserr_inval; | |
ca364317 BF |
630 | status = nfsd_create(rqstp, &cstate->current_fh, |
631 | create->cr_name, create->cr_namelen, | |
632 | &create->cr_iattr, S_IFBLK, rdev, &resfh); | |
1da177e4 LT |
633 | break; |
634 | ||
635 | case NF4CHR: | |
636 | rdev = MKDEV(create->cr_specdata1, create->cr_specdata2); | |
637 | if (MAJOR(rdev) != create->cr_specdata1 || | |
638 | MINOR(rdev) != create->cr_specdata2) | |
639 | return nfserr_inval; | |
ca364317 BF |
640 | status = nfsd_create(rqstp, &cstate->current_fh, |
641 | create->cr_name, create->cr_namelen, | |
642 | &create->cr_iattr,S_IFCHR, rdev, &resfh); | |
1da177e4 LT |
643 | break; |
644 | ||
645 | case NF4SOCK: | |
ca364317 BF |
646 | status = nfsd_create(rqstp, &cstate->current_fh, |
647 | create->cr_name, create->cr_namelen, | |
648 | &create->cr_iattr, S_IFSOCK, 0, &resfh); | |
1da177e4 LT |
649 | break; |
650 | ||
651 | case NF4FIFO: | |
ca364317 BF |
652 | status = nfsd_create(rqstp, &cstate->current_fh, |
653 | create->cr_name, create->cr_namelen, | |
654 | &create->cr_iattr, S_IFIFO, 0, &resfh); | |
1da177e4 LT |
655 | break; |
656 | ||
657 | case NF4DIR: | |
658 | create->cr_iattr.ia_valid &= ~ATTR_SIZE; | |
ca364317 BF |
659 | status = nfsd_create(rqstp, &cstate->current_fh, |
660 | create->cr_name, create->cr_namelen, | |
661 | &create->cr_iattr, S_IFDIR, 0, &resfh); | |
1da177e4 LT |
662 | break; |
663 | ||
664 | default: | |
665 | status = nfserr_badtype; | |
666 | } | |
667 | ||
9208faf2 YZ |
668 | if (status) |
669 | goto out; | |
1da177e4 | 670 | |
18032ca0 DQ |
671 | if (create->cr_label.len) |
672 | nfsd4_security_inode_setsecctx(&resfh, &create->cr_label, create->cr_bmval); | |
673 | ||
9208faf2 YZ |
674 | if (create->cr_acl != NULL) |
675 | do_set_nfs4_acl(rqstp, &resfh, create->cr_acl, | |
676 | create->cr_bmval); | |
677 | ||
678 | fh_unlock(&cstate->current_fh); | |
679 | set_change_info(&create->cr_cinfo, &cstate->current_fh); | |
680 | fh_dup2(&cstate->current_fh, &resfh); | |
681 | out: | |
1da177e4 LT |
682 | fh_put(&resfh); |
683 | return status; | |
684 | } | |
685 | ||
7191155b | 686 | static __be32 |
ca364317 BF |
687 | nfsd4_getattr(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
688 | struct nfsd4_getattr *getattr) | |
1da177e4 | 689 | { |
b37ad28b | 690 | __be32 status; |
1da177e4 | 691 | |
8837abca | 692 | status = fh_verify(rqstp, &cstate->current_fh, 0, NFSD_MAY_NOP); |
1da177e4 LT |
693 | if (status) |
694 | return status; | |
695 | ||
696 | if (getattr->ga_bmval[1] & NFSD_WRITEONLY_ATTRS_WORD1) | |
697 | return nfserr_inval; | |
698 | ||
7e705706 AA |
699 | getattr->ga_bmval[0] &= nfsd_suppattrs0(cstate->minorversion); |
700 | getattr->ga_bmval[1] &= nfsd_suppattrs1(cstate->minorversion); | |
701 | getattr->ga_bmval[2] &= nfsd_suppattrs2(cstate->minorversion); | |
1da177e4 | 702 | |
ca364317 | 703 | getattr->ga_fhp = &cstate->current_fh; |
1da177e4 LT |
704 | return nfs_ok; |
705 | } | |
706 | ||
7191155b | 707 | static __be32 |
ca364317 BF |
708 | nfsd4_link(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
709 | struct nfsd4_link *link) | |
1da177e4 | 710 | { |
b37ad28b | 711 | __be32 status = nfserr_nofilehandle; |
1da177e4 | 712 | |
ca364317 | 713 | if (!cstate->save_fh.fh_dentry) |
1da177e4 | 714 | return status; |
ca364317 BF |
715 | status = nfsd_link(rqstp, &cstate->current_fh, |
716 | link->li_name, link->li_namelen, &cstate->save_fh); | |
1da177e4 | 717 | if (!status) |
ca364317 | 718 | set_change_info(&link->li_cinfo, &cstate->current_fh); |
1da177e4 LT |
719 | return status; |
720 | } | |
721 | ||
0ff7ab46 | 722 | static __be32 nfsd4_do_lookupp(struct svc_rqst *rqstp, struct svc_fh *fh) |
1da177e4 LT |
723 | { |
724 | struct svc_fh tmp_fh; | |
b37ad28b | 725 | __be32 ret; |
1da177e4 LT |
726 | |
727 | fh_init(&tmp_fh, NFS4_FHSIZE); | |
df547efb BF |
728 | ret = exp_pseudoroot(rqstp, &tmp_fh); |
729 | if (ret) | |
1da177e4 | 730 | return ret; |
0ff7ab46 | 731 | if (tmp_fh.fh_dentry == fh->fh_dentry) { |
1da177e4 LT |
732 | fh_put(&tmp_fh); |
733 | return nfserr_noent; | |
734 | } | |
735 | fh_put(&tmp_fh); | |
0ff7ab46 BF |
736 | return nfsd_lookup(rqstp, fh, "..", 2, fh); |
737 | } | |
738 | ||
739 | static __be32 | |
740 | nfsd4_lookupp(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, | |
741 | void *arg) | |
742 | { | |
743 | return nfsd4_do_lookupp(rqstp, &cstate->current_fh); | |
1da177e4 LT |
744 | } |
745 | ||
7191155b | 746 | static __be32 |
ca364317 BF |
747 | nfsd4_lookup(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
748 | struct nfsd4_lookup *lookup) | |
1da177e4 | 749 | { |
ca364317 BF |
750 | return nfsd_lookup(rqstp, &cstate->current_fh, |
751 | lookup->lo_name, lookup->lo_len, | |
752 | &cstate->current_fh); | |
1da177e4 LT |
753 | } |
754 | ||
7191155b | 755 | static __be32 |
ca364317 BF |
756 | nfsd4_read(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
757 | struct nfsd4_read *read) | |
1da177e4 | 758 | { |
b37ad28b | 759 | __be32 status; |
1da177e4 LT |
760 | |
761 | /* no need to check permission - this will be done in nfsd_read() */ | |
762 | ||
7e06b7f9 | 763 | read->rd_filp = NULL; |
1da177e4 LT |
764 | if (read->rd_offset >= OFFSET_MAX) |
765 | return nfserr_inval; | |
766 | ||
9b3234b9 BF |
767 | /* |
768 | * If we do a zero copy read, then a client will see read data | |
769 | * that reflects the state of the file *after* performing the | |
770 | * following compound. | |
771 | * | |
772 | * To ensure proper ordering, we therefore turn off zero copy if | |
773 | * the client wants us to do more in this compound: | |
774 | */ | |
775 | if (!nfsd4_last_compound_op(rqstp)) | |
776 | rqstp->rq_splice_ok = false; | |
777 | ||
1da177e4 | 778 | /* check stateid */ |
5ccb0066 SK |
779 | if ((status = nfs4_preprocess_stateid_op(SVC_NET(rqstp), |
780 | cstate, &read->rd_stateid, | |
dd453dfd | 781 | RD_STATE, &read->rd_filp))) { |
1da177e4 LT |
782 | dprintk("NFSD: nfsd4_read: couldn't process stateid!\n"); |
783 | goto out; | |
784 | } | |
785 | status = nfs_ok; | |
786 | out: | |
1da177e4 | 787 | read->rd_rqstp = rqstp; |
ca364317 | 788 | read->rd_fhp = &cstate->current_fh; |
1da177e4 LT |
789 | return status; |
790 | } | |
791 | ||
7191155b | 792 | static __be32 |
ca364317 BF |
793 | nfsd4_readdir(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
794 | struct nfsd4_readdir *readdir) | |
1da177e4 LT |
795 | { |
796 | u64 cookie = readdir->rd_cookie; | |
797 | static const nfs4_verifier zeroverf; | |
798 | ||
799 | /* no need to check permission - this will be done in nfsd_readdir() */ | |
800 | ||
801 | if (readdir->rd_bmval[1] & NFSD_WRITEONLY_ATTRS_WORD1) | |
802 | return nfserr_inval; | |
803 | ||
7e705706 AA |
804 | readdir->rd_bmval[0] &= nfsd_suppattrs0(cstate->minorversion); |
805 | readdir->rd_bmval[1] &= nfsd_suppattrs1(cstate->minorversion); | |
806 | readdir->rd_bmval[2] &= nfsd_suppattrs2(cstate->minorversion); | |
1da177e4 | 807 | |
832023bf | 808 | if ((cookie == 1) || (cookie == 2) || |
1da177e4 LT |
809 | (cookie == 0 && memcmp(readdir->rd_verf.data, zeroverf.data, NFS4_VERIFIER_SIZE))) |
810 | return nfserr_bad_cookie; | |
811 | ||
812 | readdir->rd_rqstp = rqstp; | |
ca364317 | 813 | readdir->rd_fhp = &cstate->current_fh; |
1da177e4 LT |
814 | return nfs_ok; |
815 | } | |
816 | ||
7191155b | 817 | static __be32 |
ca364317 BF |
818 | nfsd4_readlink(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
819 | struct nfsd4_readlink *readlink) | |
1da177e4 LT |
820 | { |
821 | readlink->rl_rqstp = rqstp; | |
ca364317 | 822 | readlink->rl_fhp = &cstate->current_fh; |
1da177e4 LT |
823 | return nfs_ok; |
824 | } | |
825 | ||
7191155b | 826 | static __be32 |
ca364317 BF |
827 | nfsd4_remove(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
828 | struct nfsd4_remove *remove) | |
1da177e4 | 829 | { |
b37ad28b | 830 | __be32 status; |
1da177e4 | 831 | |
5ccb0066 | 832 | if (locks_in_grace(SVC_NET(rqstp))) |
c815afc7 | 833 | return nfserr_grace; |
ca364317 BF |
834 | status = nfsd_unlink(rqstp, &cstate->current_fh, 0, |
835 | remove->rm_name, remove->rm_namelen); | |
1da177e4 | 836 | if (!status) { |
ca364317 BF |
837 | fh_unlock(&cstate->current_fh); |
838 | set_change_info(&remove->rm_cinfo, &cstate->current_fh); | |
1da177e4 LT |
839 | } |
840 | return status; | |
841 | } | |
842 | ||
7191155b | 843 | static __be32 |
ca364317 BF |
844 | nfsd4_rename(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
845 | struct nfsd4_rename *rename) | |
1da177e4 | 846 | { |
b37ad28b | 847 | __be32 status = nfserr_nofilehandle; |
1da177e4 | 848 | |
ca364317 | 849 | if (!cstate->save_fh.fh_dentry) |
1da177e4 | 850 | return status; |
5ccb0066 SK |
851 | if (locks_in_grace(SVC_NET(rqstp)) && |
852 | !(cstate->save_fh.fh_export->ex_flags & NFSEXP_NOSUBTREECHECK)) | |
c815afc7 | 853 | return nfserr_grace; |
ca364317 BF |
854 | status = nfsd_rename(rqstp, &cstate->save_fh, rename->rn_sname, |
855 | rename->rn_snamelen, &cstate->current_fh, | |
1da177e4 | 856 | rename->rn_tname, rename->rn_tnamelen); |
2a6cf944 BF |
857 | if (status) |
858 | return status; | |
859 | set_change_info(&rename->rn_sinfo, &cstate->current_fh); | |
860 | set_change_info(&rename->rn_tinfo, &cstate->save_fh); | |
861 | return nfs_ok; | |
1da177e4 LT |
862 | } |
863 | ||
dcb488a3 AA |
864 | static __be32 |
865 | nfsd4_secinfo(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, | |
866 | struct nfsd4_secinfo *secinfo) | |
867 | { | |
868 | struct svc_fh resfh; | |
869 | struct svc_export *exp; | |
870 | struct dentry *dentry; | |
871 | __be32 err; | |
872 | ||
873 | fh_init(&resfh, NFS4_FHSIZE); | |
29a78a3e BF |
874 | err = fh_verify(rqstp, &cstate->current_fh, S_IFDIR, NFSD_MAY_EXEC); |
875 | if (err) | |
876 | return err; | |
dcb488a3 AA |
877 | err = nfsd_lookup_dentry(rqstp, &cstate->current_fh, |
878 | secinfo->si_name, secinfo->si_namelen, | |
879 | &exp, &dentry); | |
880 | if (err) | |
881 | return err; | |
882 | if (dentry->d_inode == NULL) { | |
883 | exp_put(exp); | |
884 | err = nfserr_noent; | |
885 | } else | |
886 | secinfo->si_exp = exp; | |
887 | dput(dentry); | |
56560b9a BF |
888 | if (cstate->minorversion) |
889 | /* See rfc 5661 section 2.6.3.1.1.8 */ | |
890 | fh_put(&cstate->current_fh); | |
dcb488a3 AA |
891 | return err; |
892 | } | |
893 | ||
04f4ad16 BF |
894 | static __be32 |
895 | nfsd4_secinfo_no_name(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, | |
896 | struct nfsd4_secinfo_no_name *sin) | |
897 | { | |
898 | __be32 err; | |
899 | ||
900 | switch (sin->sin_style) { | |
901 | case NFS4_SECINFO_STYLE4_CURRENT_FH: | |
902 | break; | |
903 | case NFS4_SECINFO_STYLE4_PARENT: | |
904 | err = nfsd4_do_lookupp(rqstp, &cstate->current_fh); | |
905 | if (err) | |
906 | return err; | |
907 | break; | |
908 | default: | |
909 | return nfserr_inval; | |
910 | } | |
bf18f163 KM |
911 | |
912 | sin->sin_exp = exp_get(cstate->current_fh.fh_export); | |
04f4ad16 BF |
913 | fh_put(&cstate->current_fh); |
914 | return nfs_ok; | |
915 | } | |
916 | ||
7191155b | 917 | static __be32 |
ca364317 BF |
918 | nfsd4_setattr(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
919 | struct nfsd4_setattr *setattr) | |
1da177e4 | 920 | { |
b37ad28b | 921 | __be32 status = nfs_ok; |
96f6f985 | 922 | int err; |
1da177e4 | 923 | |
1da177e4 | 924 | if (setattr->sa_iattr.ia_valid & ATTR_SIZE) { |
5ccb0066 | 925 | status = nfs4_preprocess_stateid_op(SVC_NET(rqstp), cstate, |
6150ef0d | 926 | &setattr->sa_stateid, WR_STATE, NULL); |
375c5547 | 927 | if (status) { |
3e3b4800 | 928 | dprintk("NFSD: nfsd4_setattr: couldn't process stateid!\n"); |
375c5547 BF |
929 | return status; |
930 | } | |
1da177e4 | 931 | } |
96f6f985 AV |
932 | err = fh_want_write(&cstate->current_fh); |
933 | if (err) | |
934 | return nfserrno(err); | |
1da177e4 | 935 | status = nfs_ok; |
3c8e0316 YZ |
936 | |
937 | status = check_attr_support(rqstp, cstate, setattr->sa_bmval, | |
938 | nfsd_attrmask); | |
939 | if (status) | |
940 | goto out; | |
941 | ||
1da177e4 | 942 | if (setattr->sa_acl != NULL) |
ca364317 BF |
943 | status = nfsd4_set_nfs4_acl(rqstp, &cstate->current_fh, |
944 | setattr->sa_acl); | |
1da177e4 | 945 | if (status) |
18f335af | 946 | goto out; |
18032ca0 DQ |
947 | if (setattr->sa_label.len) |
948 | status = nfsd4_set_nfs4_label(rqstp, &cstate->current_fh, | |
949 | &setattr->sa_label); | |
950 | if (status) | |
951 | goto out; | |
ca364317 | 952 | status = nfsd_setattr(rqstp, &cstate->current_fh, &setattr->sa_iattr, |
1da177e4 | 953 | 0, (time_t)0); |
18f335af | 954 | out: |
bad0dcff | 955 | fh_drop_write(&cstate->current_fh); |
1da177e4 LT |
956 | return status; |
957 | } | |
958 | ||
ffe1137b BF |
959 | static int fill_in_write_vector(struct kvec *vec, struct nfsd4_write *write) |
960 | { | |
961 | int i = 1; | |
962 | int buflen = write->wr_buflen; | |
963 | ||
964 | vec[0].iov_base = write->wr_head.iov_base; | |
965 | vec[0].iov_len = min_t(int, buflen, write->wr_head.iov_len); | |
966 | buflen -= vec[0].iov_len; | |
967 | ||
968 | while (buflen) { | |
969 | vec[i].iov_base = page_address(write->wr_pagelist[i - 1]); | |
970 | vec[i].iov_len = min_t(int, PAGE_SIZE, buflen); | |
971 | buflen -= vec[i].iov_len; | |
972 | i++; | |
973 | } | |
974 | return i; | |
975 | } | |
976 | ||
7191155b | 977 | static __be32 |
ca364317 BF |
978 | nfsd4_write(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
979 | struct nfsd4_write *write) | |
1da177e4 LT |
980 | { |
981 | stateid_t *stateid = &write->wr_stateid; | |
982 | struct file *filp = NULL; | |
b37ad28b | 983 | __be32 status = nfs_ok; |
31dec253 | 984 | unsigned long cnt; |
ffe1137b | 985 | int nvecs; |
1da177e4 LT |
986 | |
987 | /* no need to check permission - this will be done in nfsd_write() */ | |
988 | ||
989 | if (write->wr_offset >= OFFSET_MAX) | |
990 | return nfserr_inval; | |
991 | ||
5ccb0066 SK |
992 | status = nfs4_preprocess_stateid_op(SVC_NET(rqstp), |
993 | cstate, stateid, WR_STATE, &filp); | |
375c5547 BF |
994 | if (status) { |
995 | dprintk("NFSD: nfsd4_write: couldn't process stateid!\n"); | |
996 | return status; | |
997 | } | |
998 | ||
31dec253 | 999 | cnt = write->wr_buflen; |
1da177e4 | 1000 | write->wr_how_written = write->wr_stable_how; |
b9c0ef85 | 1001 | gen_boot_verifier(&write->wr_verifier, SVC_NET(rqstp)); |
1da177e4 | 1002 | |
ffe1137b BF |
1003 | nvecs = fill_in_write_vector(rqstp->rq_vec, write); |
1004 | WARN_ON_ONCE(nvecs > ARRAY_SIZE(rqstp->rq_vec)); | |
1005 | ||
ca364317 | 1006 | status = nfsd_write(rqstp, &cstate->current_fh, filp, |
ffe1137b | 1007 | write->wr_offset, rqstp->rq_vec, nvecs, |
31dec253 | 1008 | &cnt, &write->wr_how_written); |
7e06b7f9 N |
1009 | if (filp) |
1010 | fput(filp); | |
1da177e4 | 1011 | |
31dec253 DS |
1012 | write->wr_bytes_written = cnt; |
1013 | ||
1da177e4 | 1014 | return status; |
1da177e4 LT |
1015 | } |
1016 | ||
95d871f0 AS |
1017 | static __be32 |
1018 | nfsd4_fallocate(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, | |
1019 | struct nfsd4_fallocate *fallocate, int flags) | |
1020 | { | |
1021 | __be32 status = nfserr_notsupp; | |
1022 | struct file *file; | |
1023 | ||
1024 | status = nfs4_preprocess_stateid_op(SVC_NET(rqstp), cstate, | |
1025 | &fallocate->falloc_stateid, | |
1026 | WR_STATE, &file); | |
1027 | if (status != nfs_ok) { | |
1028 | dprintk("NFSD: nfsd4_fallocate: couldn't process stateid!\n"); | |
1029 | return status; | |
1030 | } | |
1031 | ||
1032 | status = nfsd4_vfs_fallocate(rqstp, &cstate->current_fh, file, | |
1033 | fallocate->falloc_offset, | |
1034 | fallocate->falloc_length, | |
1035 | flags); | |
1036 | fput(file); | |
1037 | return status; | |
1038 | } | |
1039 | ||
1040 | static __be32 | |
1041 | nfsd4_allocate(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, | |
1042 | struct nfsd4_fallocate *fallocate) | |
1043 | { | |
1044 | return nfsd4_fallocate(rqstp, cstate, fallocate, 0); | |
1045 | } | |
1046 | ||
b0cb9085 AS |
1047 | static __be32 |
1048 | nfsd4_deallocate(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, | |
1049 | struct nfsd4_fallocate *fallocate) | |
1050 | { | |
1051 | return nfsd4_fallocate(rqstp, cstate, fallocate, | |
1052 | FALLOC_FL_PUNCH_HOLE | FALLOC_FL_KEEP_SIZE); | |
1053 | } | |
1054 | ||
24bab491 AS |
1055 | static __be32 |
1056 | nfsd4_seek(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, | |
1057 | struct nfsd4_seek *seek) | |
1058 | { | |
1059 | int whence; | |
1060 | __be32 status; | |
1061 | struct file *file; | |
1062 | ||
1063 | status = nfs4_preprocess_stateid_op(SVC_NET(rqstp), cstate, | |
1064 | &seek->seek_stateid, | |
1065 | RD_STATE, &file); | |
1066 | if (status) { | |
1067 | dprintk("NFSD: nfsd4_seek: couldn't process stateid!\n"); | |
1068 | return status; | |
1069 | } | |
1070 | ||
1071 | switch (seek->seek_whence) { | |
1072 | case NFS4_CONTENT_DATA: | |
1073 | whence = SEEK_DATA; | |
1074 | break; | |
1075 | case NFS4_CONTENT_HOLE: | |
1076 | whence = SEEK_HOLE; | |
1077 | break; | |
1078 | default: | |
1079 | status = nfserr_union_notsupp; | |
1080 | goto out; | |
1081 | } | |
1082 | ||
1083 | /* | |
1084 | * Note: This call does change file->f_pos, but nothing in NFSD | |
1085 | * should ever file->f_pos. | |
1086 | */ | |
1087 | seek->seek_pos = vfs_llseek(file, seek->seek_offset, whence); | |
1088 | if (seek->seek_pos < 0) | |
1089 | status = nfserrno(seek->seek_pos); | |
1090 | else if (seek->seek_pos >= i_size_read(file_inode(file))) | |
1091 | seek->seek_eof = true; | |
1092 | ||
1093 | out: | |
1094 | fput(file); | |
1095 | return status; | |
1096 | } | |
1097 | ||
1da177e4 LT |
1098 | /* This routine never returns NFS_OK! If there are no other errors, it |
1099 | * will return NFSERR_SAME or NFSERR_NOT_SAME depending on whether the | |
1100 | * attributes matched. VERIFY is implemented by mapping NFSERR_SAME | |
1101 | * to NFS_OK after the call; NVERIFY by mapping NFSERR_NOT_SAME to NFS_OK. | |
1102 | */ | |
b37ad28b | 1103 | static __be32 |
c954e2a5 | 1104 | _nfsd4_verify(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
ca364317 | 1105 | struct nfsd4_verify *verify) |
1da177e4 | 1106 | { |
2ebbc012 | 1107 | __be32 *buf, *p; |
1da177e4 | 1108 | int count; |
b37ad28b | 1109 | __be32 status; |
1da177e4 | 1110 | |
8837abca | 1111 | status = fh_verify(rqstp, &cstate->current_fh, 0, NFSD_MAY_NOP); |
1da177e4 LT |
1112 | if (status) |
1113 | return status; | |
1114 | ||
3c8e0316 YZ |
1115 | status = check_attr_support(rqstp, cstate, verify->ve_bmval, NULL); |
1116 | if (status) | |
1117 | return status; | |
1118 | ||
1da177e4 LT |
1119 | if ((verify->ve_bmval[0] & FATTR4_WORD0_RDATTR_ERROR) |
1120 | || (verify->ve_bmval[1] & NFSD_WRITEONLY_ATTRS_WORD1)) | |
1121 | return nfserr_inval; | |
1122 | if (verify->ve_attrlen & 3) | |
1123 | return nfserr_inval; | |
1124 | ||
1125 | /* count in words: | |
1126 | * bitmap_len(1) + bitmap(2) + attr_len(1) = 4 | |
1127 | */ | |
1128 | count = 4 + (verify->ve_attrlen >> 2); | |
1129 | buf = kmalloc(count << 2, GFP_KERNEL); | |
1130 | if (!buf) | |
3e772463 | 1131 | return nfserr_jukebox; |
1da177e4 | 1132 | |
84822d0b | 1133 | p = buf; |
d5184658 | 1134 | status = nfsd4_encode_fattr_to_buf(&p, count, &cstate->current_fh, |
ca364317 | 1135 | cstate->current_fh.fh_export, |
d5184658 BF |
1136 | cstate->current_fh.fh_dentry, |
1137 | verify->ve_bmval, | |
406a7ea9 | 1138 | rqstp, 0); |
41ae6e71 BF |
1139 | /* |
1140 | * If nfsd4_encode_fattr() ran out of space, assume that's because | |
1141 | * the attributes are longer (hence different) than those given: | |
1142 | */ | |
84822d0b | 1143 | if (status == nfserr_resource) |
1da177e4 LT |
1144 | status = nfserr_not_same; |
1145 | if (status) | |
1146 | goto out_kfree; | |
1147 | ||
95ec28cd BH |
1148 | /* skip bitmap */ |
1149 | p = buf + 1 + ntohl(buf[0]); | |
1da177e4 LT |
1150 | status = nfserr_not_same; |
1151 | if (ntohl(*p++) != verify->ve_attrlen) | |
1152 | goto out_kfree; | |
1153 | if (!memcmp(p, verify->ve_attrval, verify->ve_attrlen)) | |
1154 | status = nfserr_same; | |
1155 | ||
1156 | out_kfree: | |
1157 | kfree(buf); | |
1158 | return status; | |
1159 | } | |
1160 | ||
c954e2a5 BF |
1161 | static __be32 |
1162 | nfsd4_nverify(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, | |
1163 | struct nfsd4_verify *verify) | |
1164 | { | |
1165 | __be32 status; | |
1166 | ||
1167 | status = _nfsd4_verify(rqstp, cstate, verify); | |
1168 | return status == nfserr_not_same ? nfs_ok : status; | |
1169 | } | |
1170 | ||
1171 | static __be32 | |
1172 | nfsd4_verify(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, | |
1173 | struct nfsd4_verify *verify) | |
1174 | { | |
1175 | __be32 status; | |
1176 | ||
1177 | status = _nfsd4_verify(rqstp, cstate, verify); | |
1178 | return status == nfserr_same ? nfs_ok : status; | |
1179 | } | |
1180 | ||
1da177e4 LT |
1181 | /* |
1182 | * NULL call. | |
1183 | */ | |
7111c66e | 1184 | static __be32 |
1da177e4 LT |
1185 | nfsd4_proc_null(struct svc_rqst *rqstp, void *argp, void *resp) |
1186 | { | |
1187 | return nfs_ok; | |
1188 | } | |
1189 | ||
e2b20950 SA |
1190 | static inline void nfsd4_increment_op_stats(u32 opnum) |
1191 | { | |
1192 | if (opnum >= FIRST_NFS4_OP && opnum <= LAST_NFS4_OP) | |
1193 | nfsdstats.nfs4_opcount[opnum]++; | |
1194 | } | |
1195 | ||
b591480b BF |
1196 | typedef __be32(*nfsd4op_func)(struct svc_rqst *, struct nfsd4_compound_state *, |
1197 | void *); | |
58e7b33a | 1198 | typedef u32(*nfsd4op_rsize)(struct svc_rqst *, struct nfsd4_op *op); |
8b70484c TM |
1199 | typedef void(*stateid_setter)(struct nfsd4_compound_state *, void *); |
1200 | typedef void(*stateid_getter)(struct nfsd4_compound_state *, void *); | |
58e7b33a | 1201 | |
f9bb94c4 AA |
1202 | enum nfsd4_op_flags { |
1203 | ALLOWED_WITHOUT_FH = 1 << 0, /* No current filehandle required */ | |
5ece3caf MJ |
1204 | ALLOWED_ON_ABSENT_FS = 1 << 1, /* ops processed on absent fs */ |
1205 | ALLOWED_AS_FIRST_OP = 1 << 2, /* ops reqired first in compound */ | |
68d93184 BF |
1206 | /* For rfc 5661 section 2.6.3.1.1: */ |
1207 | OP_HANDLES_WRONGSEC = 1 << 3, | |
1208 | OP_IS_PUTFH_LIKE = 1 << 4, | |
1091006c | 1209 | /* |
c856694e BF |
1210 | * These are the ops whose result size we estimate before |
1211 | * encoding, to avoid performing an op then not being able to | |
1212 | * respond or cache a response. This includes writes and setattrs | |
1213 | * as well as the operations usually called "nonidempotent": | |
1214 | */ | |
1215 | OP_MODIFIES_SOMETHING = 1 << 5, | |
1216 | /* | |
1217 | * Cache compounds containing these ops in the xid-based drc: | |
1091006c BF |
1218 | * We use the DRC for compounds containing non-idempotent |
1219 | * operations, *except* those that are 4.1-specific (since | |
1220 | * sessions provide their own EOS), and except for stateful | |
1221 | * operations other than setclientid and setclientid_confirm | |
1222 | * (since sequence numbers provide EOS for open, lock, etc in | |
1223 | * the v4.0 case). | |
1224 | */ | |
c856694e | 1225 | OP_CACHEME = 1 << 6, |
8b70484c TM |
1226 | /* |
1227 | * These are ops which clear current state id. | |
1228 | */ | |
1229 | OP_CLEAR_STATEID = 1 << 7, | |
c856694e BF |
1230 | }; |
1231 | ||
1232 | struct nfsd4_operation { | |
1233 | nfsd4op_func op_func; | |
1234 | u32 op_flags; | |
1235 | char *op_name; | |
58e7b33a MJ |
1236 | /* Try to get response size before operation */ |
1237 | nfsd4op_rsize op_rsize_bop; | |
24ff99c6 BS |
1238 | stateid_getter op_get_currentstateid; |
1239 | stateid_setter op_set_currentstateid; | |
b591480b BF |
1240 | }; |
1241 | ||
1242 | static struct nfsd4_operation nfsd4_ops[]; | |
1243 | ||
f1c7f79b | 1244 | static const char *nfsd4_op_name(unsigned opnum); |
b001a1b6 | 1245 | |
f9bb94c4 | 1246 | /* |
57716355 | 1247 | * Enforce NFSv4.1 COMPOUND ordering rules: |
f9bb94c4 | 1248 | * |
57716355 BF |
1249 | * Also note, enforced elsewhere: |
1250 | * - SEQUENCE other than as first op results in | |
1251 | * NFS4ERR_SEQUENCE_POS. (Enforced in nfsd4_sequence().) | |
1d1bc8f2 BF |
1252 | * - BIND_CONN_TO_SESSION must be the only op in its compound. |
1253 | * (Enforced in nfsd4_bind_conn_to_session().) | |
57716355 BF |
1254 | * - DESTROY_SESSION must be the final operation in a compound, if |
1255 | * sessionid's in SEQUENCE and DESTROY_SESSION are the same. | |
1256 | * (Enforced in nfsd4_destroy_session().) | |
f9bb94c4 | 1257 | */ |
57716355 | 1258 | static __be32 nfs41_check_op_ordering(struct nfsd4_compoundargs *args) |
f9bb94c4 | 1259 | { |
57716355 BF |
1260 | struct nfsd4_op *op = &args->ops[0]; |
1261 | ||
1262 | /* These ordering requirements don't apply to NFSv4.0: */ | |
1263 | if (args->minorversion == 0) | |
1264 | return nfs_ok; | |
1265 | /* This is weird, but OK, not our problem: */ | |
1266 | if (args->opcnt == 0) | |
1267 | return nfs_ok; | |
1268 | if (op->status == nfserr_op_illegal) | |
1269 | return nfs_ok; | |
1270 | if (!(nfsd4_ops[op->opnum].op_flags & ALLOWED_AS_FIRST_OP)) | |
1271 | return nfserr_op_not_in_session; | |
1272 | if (op->opnum == OP_SEQUENCE) | |
1273 | return nfs_ok; | |
1274 | if (args->opcnt != 1) | |
1275 | return nfserr_not_only_op; | |
1276 | return nfs_ok; | |
f9bb94c4 AA |
1277 | } |
1278 | ||
22b03214 BF |
1279 | static inline struct nfsd4_operation *OPDESC(struct nfsd4_op *op) |
1280 | { | |
1281 | return &nfsd4_ops[op->opnum]; | |
1282 | } | |
1283 | ||
1091006c BF |
1284 | bool nfsd4_cache_this_op(struct nfsd4_op *op) |
1285 | { | |
e372ba60 BF |
1286 | if (op->opnum == OP_ILLEGAL) |
1287 | return false; | |
c856694e | 1288 | return OPDESC(op)->op_flags & OP_CACHEME; |
1091006c BF |
1289 | } |
1290 | ||
68d93184 BF |
1291 | static bool need_wrongsec_check(struct svc_rqst *rqstp) |
1292 | { | |
1293 | struct nfsd4_compoundres *resp = rqstp->rq_resp; | |
1294 | struct nfsd4_compoundargs *argp = rqstp->rq_argp; | |
1295 | struct nfsd4_op *this = &argp->ops[resp->opcnt - 1]; | |
1296 | struct nfsd4_op *next = &argp->ops[resp->opcnt]; | |
1297 | struct nfsd4_operation *thisd; | |
1298 | struct nfsd4_operation *nextd; | |
1299 | ||
1300 | thisd = OPDESC(this); | |
1301 | /* | |
1302 | * Most ops check wronsec on our own; only the putfh-like ops | |
1303 | * have special rules. | |
1304 | */ | |
1305 | if (!(thisd->op_flags & OP_IS_PUTFH_LIKE)) | |
1306 | return false; | |
1307 | /* | |
1308 | * rfc 5661 2.6.3.1.1.6: don't bother erroring out a | |
1309 | * put-filehandle operation if we're not going to use the | |
1310 | * result: | |
1311 | */ | |
1312 | if (argp->opcnt == resp->opcnt) | |
1313 | return false; | |
51904b08 BF |
1314 | if (next->opnum == OP_ILLEGAL) |
1315 | return false; | |
68d93184 BF |
1316 | nextd = OPDESC(next); |
1317 | /* | |
1318 | * Rest of 2.6.3.1.1: certain operations will return WRONGSEC | |
1319 | * errors themselves as necessary; others should check for them | |
1320 | * now: | |
1321 | */ | |
1322 | return !(nextd->op_flags & OP_HANDLES_WRONGSEC); | |
1323 | } | |
1324 | ||
2d124dfa BF |
1325 | static void svcxdr_init_encode(struct svc_rqst *rqstp, |
1326 | struct nfsd4_compoundres *resp) | |
1327 | { | |
1328 | struct xdr_stream *xdr = &resp->xdr; | |
1329 | struct xdr_buf *buf = &rqstp->rq_res; | |
1330 | struct kvec *head = buf->head; | |
1331 | ||
1332 | xdr->buf = buf; | |
ddd1ea56 | 1333 | xdr->iov = head; |
2d124dfa | 1334 | xdr->p = head->iov_base + head->iov_len; |
a5cddc88 | 1335 | xdr->end = head->iov_base + PAGE_SIZE - rqstp->rq_auth_slack; |
6ac90391 BF |
1336 | /* Tail and page_len should be zero at this point: */ |
1337 | buf->len = buf->head[0].iov_len; | |
2825a7f9 | 1338 | xdr->scratch.iov_len = 0; |
05638dc7 | 1339 | xdr->page_ptr = buf->pages - 1; |
2825a7f9 | 1340 | buf->buflen = PAGE_SIZE * (1 + rqstp->rq_page_end - buf->pages) |
a5cddc88 | 1341 | - rqstp->rq_auth_slack; |
2d124dfa BF |
1342 | } |
1343 | ||
1da177e4 LT |
1344 | /* |
1345 | * COMPOUND call. | |
1346 | */ | |
7111c66e | 1347 | static __be32 |
1da177e4 LT |
1348 | nfsd4_proc_compound(struct svc_rqst *rqstp, |
1349 | struct nfsd4_compoundargs *args, | |
1350 | struct nfsd4_compoundres *resp) | |
1351 | { | |
1352 | struct nfsd4_op *op; | |
b591480b | 1353 | struct nfsd4_operation *opdesc; |
e354d571 | 1354 | struct nfsd4_compound_state *cstate = &resp->cstate; |
4daeed25 KM |
1355 | struct svc_fh *current_fh = &cstate->current_fh; |
1356 | struct svc_fh *save_fh = &cstate->save_fh; | |
b37ad28b | 1357 | __be32 status; |
1da177e4 | 1358 | |
2d124dfa | 1359 | svcxdr_init_encode(rqstp, resp); |
4aea24b2 | 1360 | resp->tagp = resp->xdr.p; |
1da177e4 | 1361 | /* reserve space for: taglen, tag, and opcnt */ |
d3f627c8 | 1362 | xdr_reserve_space(&resp->xdr, 8 + args->taglen); |
1da177e4 LT |
1363 | resp->taglen = args->taglen; |
1364 | resp->tag = args->tag; | |
1da177e4 | 1365 | resp->rqstp = rqstp; |
4daeed25 | 1366 | cstate->minorversion = args->minorversion; |
4daeed25 KM |
1367 | fh_init(current_fh, NFS4_FHSIZE); |
1368 | fh_init(save_fh, NFS4_FHSIZE); | |
8ff30fa4 N |
1369 | /* |
1370 | * Don't use the deferral mechanism for NFSv4; compounds make it | |
1371 | * too hard to avoid non-idempotency problems. | |
1372 | */ | |
30660e04 | 1373 | clear_bit(RQ_USEDEFERRAL, &rqstp->rq_flags); |
1da177e4 LT |
1374 | |
1375 | /* | |
1376 | * According to RFC3010, this takes precedence over all other errors. | |
1377 | */ | |
1378 | status = nfserr_minor_vers_mismatch; | |
35f7a14f | 1379 | if (nfsd_minorversion(args->minorversion, NFSD_TEST) <= 0) |
1da177e4 LT |
1380 | goto out; |
1381 | ||
57716355 BF |
1382 | status = nfs41_check_op_ordering(args); |
1383 | if (status) { | |
f9bb94c4 | 1384 | op = &args->ops[0]; |
57716355 | 1385 | op->status = status; |
f9bb94c4 AA |
1386 | goto encode_op; |
1387 | } | |
1388 | ||
1da177e4 LT |
1389 | while (!status && resp->opcnt < args->opcnt) { |
1390 | op = &args->ops[resp->opcnt++]; | |
1391 | ||
b001a1b6 BH |
1392 | dprintk("nfsv4 compound op #%d/%d: %d (%s)\n", |
1393 | resp->opcnt, args->opcnt, op->opnum, | |
1394 | nfsd4_op_name(op->opnum)); | |
1da177e4 LT |
1395 | /* |
1396 | * The XDR decode routines may have pre-set op->status; | |
1397 | * for example, if there is a miscellaneous XDR error | |
1398 | * it will be set to nfserr_bad_xdr. | |
1399 | */ | |
9d313b17 BF |
1400 | if (op->status) { |
1401 | if (op->opnum == OP_OPEN) | |
1402 | op->status = nfsd4_open_omfg(rqstp, cstate, op); | |
1da177e4 | 1403 | goto encode_op; |
9d313b17 | 1404 | } |
1da177e4 | 1405 | |
22b03214 | 1406 | opdesc = OPDESC(op); |
b591480b | 1407 | |
4daeed25 | 1408 | if (!current_fh->fh_dentry) { |
27d630ec | 1409 | if (!(opdesc->op_flags & ALLOWED_WITHOUT_FH)) { |
42ca0993 BF |
1410 | op->status = nfserr_nofilehandle; |
1411 | goto encode_op; | |
1412 | } | |
4daeed25 | 1413 | } else if (current_fh->fh_export->ex_fslocs.migrated && |
eeac294e | 1414 | !(opdesc->op_flags & ALLOWED_ON_ABSENT_FS)) { |
42ca0993 | 1415 | op->status = nfserr_moved; |
1da177e4 LT |
1416 | goto encode_op; |
1417 | } | |
b591480b | 1418 | |
2336745e KM |
1419 | fh_clear_wcc(current_fh); |
1420 | ||
58e7b33a MJ |
1421 | /* If op is non-idempotent */ |
1422 | if (opdesc->op_flags & OP_MODIFIES_SOMETHING) { | |
4c69d585 | 1423 | /* |
a8095f7e BF |
1424 | * Don't execute this op if we couldn't encode a |
1425 | * succesful reply: | |
1426 | */ | |
1427 | u32 plen = opdesc->op_rsize_bop(rqstp, op); | |
1428 | /* | |
1429 | * Plus if there's another operation, make sure | |
4c69d585 BF |
1430 | * we'll have space to at least encode an error: |
1431 | */ | |
1432 | if (resp->opcnt < args->opcnt) | |
1433 | plen += COMPOUND_ERR_SLACK_SPACE; | |
58e7b33a MJ |
1434 | op->status = nfsd4_check_resp_size(resp, plen); |
1435 | } | |
1436 | ||
1437 | if (op->status) | |
1438 | goto encode_op; | |
1439 | ||
b600de7a BF |
1440 | if (opdesc->op_get_currentstateid) |
1441 | opdesc->op_get_currentstateid(cstate, &op->u); | |
1442 | op->status = opdesc->op_func(rqstp, cstate, &op->u); | |
1da177e4 | 1443 | |
8b70484c TM |
1444 | if (!op->status) { |
1445 | if (opdesc->op_set_currentstateid) | |
1446 | opdesc->op_set_currentstateid(cstate, &op->u); | |
1447 | ||
1448 | if (opdesc->op_flags & OP_CLEAR_STATEID) | |
37c593c5 | 1449 | clear_current_stateid(cstate); |
8b70484c TM |
1450 | |
1451 | if (need_wrongsec_check(rqstp)) | |
4daeed25 | 1452 | op->status = check_nfsd_access(current_fh->fh_export, rqstp); |
8b70484c | 1453 | } |
68d93184 | 1454 | |
1da177e4 | 1455 | encode_op: |
49557cc7 | 1456 | /* Only from SEQUENCE */ |
4daeed25 | 1457 | if (cstate->status == nfserr_replay_cache) { |
da3846a2 | 1458 | dprintk("%s NFS4.1 replay from cache\n", __func__); |
abfabf8c | 1459 | status = op->status; |
da3846a2 AA |
1460 | goto out; |
1461 | } | |
a90b061c | 1462 | if (op->status == nfserr_replay_me) { |
a4f1706a | 1463 | op->replay = &cstate->replay_owner->so_replay; |
d0a381dd | 1464 | nfsd4_encode_replay(&resp->xdr, op); |
1da177e4 LT |
1465 | status = op->status = op->replay->rp_status; |
1466 | } else { | |
1467 | nfsd4_encode_operation(resp, op); | |
1468 | status = op->status; | |
1469 | } | |
0407717d BH |
1470 | |
1471 | dprintk("nfsv4 compound op %p opcnt %d #%d: %d: status %d\n", | |
1472 | args->ops, args->opcnt, resp->opcnt, op->opnum, | |
1473 | be32_to_cpu(status)); | |
1474 | ||
58fb12e6 | 1475 | nfsd4_cstate_clear_replay(cstate); |
7e06b7f9 N |
1476 | /* XXX Ugh, we need to get rid of this kind of special case: */ |
1477 | if (op->opnum == OP_READ && op->u.read.rd_filp) | |
1478 | fput(op->u.read.rd_filp); | |
e2b20950 SA |
1479 | |
1480 | nfsd4_increment_op_stats(op->opnum); | |
1da177e4 LT |
1481 | } |
1482 | ||
4daeed25 KM |
1483 | cstate->status = status; |
1484 | fh_put(current_fh); | |
1485 | fh_put(save_fh); | |
1486 | BUG_ON(cstate->replay_owner); | |
1da177e4 | 1487 | out: |
2f425878 | 1488 | /* Reset deferral mechanism for RPC deferrals */ |
30660e04 | 1489 | set_bit(RQ_USEDEFERRAL, &rqstp->rq_flags); |
3b12cd98 | 1490 | dprintk("nfsv4 compound returned %d\n", ntohl(status)); |
1da177e4 LT |
1491 | return status; |
1492 | } | |
1493 | ||
58e7b33a MJ |
1494 | #define op_encode_hdr_size (2) |
1495 | #define op_encode_stateid_maxsz (XDR_QUADLEN(NFS4_STATEID_SIZE)) | |
1496 | #define op_encode_verifier_maxsz (XDR_QUADLEN(NFS4_VERIFIER_SIZE)) | |
1497 | #define op_encode_change_info_maxsz (5) | |
1498 | #define nfs4_fattr_bitmap_maxsz (4) | |
1499 | ||
8c7424cf BF |
1500 | /* We'll fall back on returning no lockowner if run out of space: */ |
1501 | #define op_encode_lockowner_maxsz (0) | |
58e7b33a MJ |
1502 | #define op_encode_lock_denied_maxsz (8 + op_encode_lockowner_maxsz) |
1503 | ||
1504 | #define nfs4_owner_maxsz (1 + XDR_QUADLEN(IDMAP_NAMESZ)) | |
1505 | ||
1506 | #define op_encode_ace_maxsz (3 + nfs4_owner_maxsz) | |
1507 | #define op_encode_delegation_maxsz (1 + op_encode_stateid_maxsz + 1 + \ | |
1508 | op_encode_ace_maxsz) | |
1509 | ||
1510 | #define op_encode_channel_attrs_maxsz (6 + 1 + 1) | |
1511 | ||
1512 | static inline u32 nfsd4_only_status_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op) | |
1513 | { | |
1514 | return (op_encode_hdr_size) * sizeof(__be32); | |
1515 | } | |
1516 | ||
1517 | static inline u32 nfsd4_status_stateid_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op) | |
1518 | { | |
1519 | return (op_encode_hdr_size + op_encode_stateid_maxsz)* sizeof(__be32); | |
1520 | } | |
1521 | ||
1522 | static inline u32 nfsd4_commit_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op) | |
1523 | { | |
1524 | return (op_encode_hdr_size + op_encode_verifier_maxsz) * sizeof(__be32); | |
1525 | } | |
1526 | ||
1527 | static inline u32 nfsd4_create_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op) | |
1528 | { | |
1529 | return (op_encode_hdr_size + op_encode_change_info_maxsz | |
1530 | + nfs4_fattr_bitmap_maxsz) * sizeof(__be32); | |
1531 | } | |
1532 | ||
b86cef60 BF |
1533 | /* |
1534 | * Note since this is an idempotent operation we won't insist on failing | |
1535 | * the op prematurely if the estimate is too large. We may turn off splice | |
1536 | * reads unnecessarily. | |
1537 | */ | |
1538 | static inline u32 nfsd4_getattr_rsize(struct svc_rqst *rqstp, | |
1539 | struct nfsd4_op *op) | |
1540 | { | |
1541 | u32 *bmap = op->u.getattr.ga_bmval; | |
1542 | u32 bmap0 = bmap[0], bmap1 = bmap[1], bmap2 = bmap[2]; | |
1543 | u32 ret = 0; | |
1544 | ||
1545 | if (bmap0 & FATTR4_WORD0_ACL) | |
1546 | return svc_max_payload(rqstp); | |
1547 | if (bmap0 & FATTR4_WORD0_FS_LOCATIONS) | |
1548 | return svc_max_payload(rqstp); | |
1549 | ||
1550 | if (bmap1 & FATTR4_WORD1_OWNER) { | |
1551 | ret += IDMAP_NAMESZ + 4; | |
1552 | bmap1 &= ~FATTR4_WORD1_OWNER; | |
1553 | } | |
1554 | if (bmap1 & FATTR4_WORD1_OWNER_GROUP) { | |
1555 | ret += IDMAP_NAMESZ + 4; | |
1556 | bmap1 &= ~FATTR4_WORD1_OWNER_GROUP; | |
1557 | } | |
1558 | if (bmap0 & FATTR4_WORD0_FILEHANDLE) { | |
1559 | ret += NFS4_FHSIZE + 4; | |
1560 | bmap0 &= ~FATTR4_WORD0_FILEHANDLE; | |
1561 | } | |
1562 | if (bmap2 & FATTR4_WORD2_SECURITY_LABEL) { | |
1563 | ret += NFSD4_MAX_SEC_LABEL_LEN + 12; | |
1564 | bmap2 &= ~FATTR4_WORD2_SECURITY_LABEL; | |
1565 | } | |
1566 | /* | |
1567 | * Largest of remaining attributes are 16 bytes (e.g., | |
1568 | * supported_attributes) | |
1569 | */ | |
1570 | ret += 16 * (hweight32(bmap0) + hweight32(bmap1) + hweight32(bmap2)); | |
1571 | /* bitmask, length */ | |
1572 | ret += 20; | |
1573 | return ret; | |
1574 | } | |
1575 | ||
58e7b33a MJ |
1576 | static inline u32 nfsd4_link_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op) |
1577 | { | |
1578 | return (op_encode_hdr_size + op_encode_change_info_maxsz) | |
1579 | * sizeof(__be32); | |
1580 | } | |
1581 | ||
1582 | static inline u32 nfsd4_lock_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op) | |
1583 | { | |
1584 | return (op_encode_hdr_size + op_encode_lock_denied_maxsz) | |
1585 | * sizeof(__be32); | |
1586 | } | |
1587 | ||
1588 | static inline u32 nfsd4_open_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op) | |
1589 | { | |
1590 | return (op_encode_hdr_size + op_encode_stateid_maxsz | |
1591 | + op_encode_change_info_maxsz + 1 | |
1592 | + nfs4_fattr_bitmap_maxsz | |
1593 | + op_encode_delegation_maxsz) * sizeof(__be32); | |
1594 | } | |
1595 | ||
1596 | static inline u32 nfsd4_read_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op) | |
1597 | { | |
1598 | u32 maxcount = 0, rlen = 0; | |
1599 | ||
1600 | maxcount = svc_max_payload(rqstp); | |
3c7aa15d | 1601 | rlen = min(op->u.read.rd_length, maxcount); |
58e7b33a | 1602 | |
622f560e | 1603 | return (op_encode_hdr_size + 2 + XDR_QUADLEN(rlen)) * sizeof(__be32); |
58e7b33a MJ |
1604 | } |
1605 | ||
1606 | static inline u32 nfsd4_readdir_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op) | |
1607 | { | |
3c7aa15d | 1608 | u32 maxcount = 0, rlen = 0; |
58e7b33a | 1609 | |
3c7aa15d KM |
1610 | maxcount = svc_max_payload(rqstp); |
1611 | rlen = min(op->u.readdir.rd_maxcount, maxcount); | |
58e7b33a | 1612 | |
561f0ed4 BF |
1613 | return (op_encode_hdr_size + op_encode_verifier_maxsz + |
1614 | XDR_QUADLEN(rlen)) * sizeof(__be32); | |
58e7b33a MJ |
1615 | } |
1616 | ||
1617 | static inline u32 nfsd4_remove_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op) | |
1618 | { | |
1619 | return (op_encode_hdr_size + op_encode_change_info_maxsz) | |
1620 | * sizeof(__be32); | |
1621 | } | |
1622 | ||
1623 | static inline u32 nfsd4_rename_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op) | |
1624 | { | |
1625 | return (op_encode_hdr_size + op_encode_change_info_maxsz | |
1626 | + op_encode_change_info_maxsz) * sizeof(__be32); | |
1627 | } | |
1628 | ||
ccae70a9 BF |
1629 | static inline u32 nfsd4_sequence_rsize(struct svc_rqst *rqstp, |
1630 | struct nfsd4_op *op) | |
1631 | { | |
d1d84c96 BF |
1632 | return (op_encode_hdr_size |
1633 | + XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + 5) * sizeof(__be32); | |
ccae70a9 BF |
1634 | } |
1635 | ||
58e7b33a MJ |
1636 | static inline u32 nfsd4_setattr_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op) |
1637 | { | |
1638 | return (op_encode_hdr_size + nfs4_fattr_bitmap_maxsz) * sizeof(__be32); | |
1639 | } | |
1640 | ||
1641 | static inline u32 nfsd4_setclientid_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op) | |
1642 | { | |
480efaee BF |
1643 | return (op_encode_hdr_size + 2 + XDR_QUADLEN(NFS4_VERIFIER_SIZE)) * |
1644 | sizeof(__be32); | |
58e7b33a MJ |
1645 | } |
1646 | ||
1647 | static inline u32 nfsd4_write_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op) | |
1648 | { | |
f34e432b | 1649 | return (op_encode_hdr_size + 2 + op_encode_verifier_maxsz) * sizeof(__be32); |
58e7b33a MJ |
1650 | } |
1651 | ||
1652 | static inline u32 nfsd4_exchange_id_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op) | |
1653 | { | |
1654 | return (op_encode_hdr_size + 2 + 1 + /* eir_clientid, eir_sequenceid */\ | |
a8bb84bc KM |
1655 | 1 + 1 + /* eir_flags, spr_how */\ |
1656 | 4 + /* spo_must_enforce & _allow with bitmap */\ | |
58e7b33a MJ |
1657 | 2 + /*eir_server_owner.so_minor_id */\ |
1658 | /* eir_server_owner.so_major_id<> */\ | |
1659 | XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + 1 +\ | |
1660 | /* eir_server_scope<> */\ | |
1661 | XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + 1 +\ | |
1662 | 1 + /* eir_server_impl_id array length */\ | |
1663 | 0 /* ignored eir_server_impl_id contents */) * sizeof(__be32); | |
1664 | } | |
1665 | ||
1666 | static inline u32 nfsd4_bind_conn_to_session_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op) | |
1667 | { | |
1668 | return (op_encode_hdr_size + \ | |
1669 | XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + /* bctsr_sessid */\ | |
1670 | 2 /* bctsr_dir, use_conn_in_rdma_mode */) * sizeof(__be32); | |
1671 | } | |
1672 | ||
1673 | static inline u32 nfsd4_create_session_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op) | |
1674 | { | |
1675 | return (op_encode_hdr_size + \ | |
1676 | XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + /* sessionid */\ | |
1677 | 2 + /* csr_sequence, csr_flags */\ | |
1678 | op_encode_channel_attrs_maxsz + \ | |
1679 | op_encode_channel_attrs_maxsz) * sizeof(__be32); | |
1680 | } | |
1681 | ||
20766016 | 1682 | static struct nfsd4_operation nfsd4_ops[] = { |
b591480b BF |
1683 | [OP_ACCESS] = { |
1684 | .op_func = (nfsd4op_func)nfsd4_access, | |
b001a1b6 | 1685 | .op_name = "OP_ACCESS", |
b591480b BF |
1686 | }, |
1687 | [OP_CLOSE] = { | |
1688 | .op_func = (nfsd4op_func)nfsd4_close, | |
58e7b33a | 1689 | .op_flags = OP_MODIFIES_SOMETHING, |
b001a1b6 | 1690 | .op_name = "OP_CLOSE", |
58e7b33a | 1691 | .op_rsize_bop = (nfsd4op_rsize)nfsd4_status_stateid_rsize, |
8b70484c TM |
1692 | .op_get_currentstateid = (stateid_getter)nfsd4_get_closestateid, |
1693 | .op_set_currentstateid = (stateid_setter)nfsd4_set_closestateid, | |
b591480b BF |
1694 | }, |
1695 | [OP_COMMIT] = { | |
1696 | .op_func = (nfsd4op_func)nfsd4_commit, | |
58e7b33a | 1697 | .op_flags = OP_MODIFIES_SOMETHING, |
b001a1b6 | 1698 | .op_name = "OP_COMMIT", |
58e7b33a | 1699 | .op_rsize_bop = (nfsd4op_rsize)nfsd4_commit_rsize, |
b591480b BF |
1700 | }, |
1701 | [OP_CREATE] = { | |
1702 | .op_func = (nfsd4op_func)nfsd4_create, | |
d1471053 | 1703 | .op_flags = OP_MODIFIES_SOMETHING | OP_CACHEME | OP_CLEAR_STATEID, |
b001a1b6 | 1704 | .op_name = "OP_CREATE", |
58e7b33a | 1705 | .op_rsize_bop = (nfsd4op_rsize)nfsd4_create_rsize, |
b591480b BF |
1706 | }, |
1707 | [OP_DELEGRETURN] = { | |
1708 | .op_func = (nfsd4op_func)nfsd4_delegreturn, | |
58e7b33a | 1709 | .op_flags = OP_MODIFIES_SOMETHING, |
b001a1b6 | 1710 | .op_name = "OP_DELEGRETURN", |
58e7b33a | 1711 | .op_rsize_bop = nfsd4_only_status_rsize, |
9428fe1a | 1712 | .op_get_currentstateid = (stateid_getter)nfsd4_get_delegreturnstateid, |
b591480b BF |
1713 | }, |
1714 | [OP_GETATTR] = { | |
1715 | .op_func = (nfsd4op_func)nfsd4_getattr, | |
eeac294e | 1716 | .op_flags = ALLOWED_ON_ABSENT_FS, |
b86cef60 | 1717 | .op_rsize_bop = nfsd4_getattr_rsize, |
b001a1b6 | 1718 | .op_name = "OP_GETATTR", |
b591480b BF |
1719 | }, |
1720 | [OP_GETFH] = { | |
1721 | .op_func = (nfsd4op_func)nfsd4_getfh, | |
b001a1b6 | 1722 | .op_name = "OP_GETFH", |
b591480b BF |
1723 | }, |
1724 | [OP_LINK] = { | |
1725 | .op_func = (nfsd4op_func)nfsd4_link, | |
c856694e BF |
1726 | .op_flags = ALLOWED_ON_ABSENT_FS | OP_MODIFIES_SOMETHING |
1727 | | OP_CACHEME, | |
b001a1b6 | 1728 | .op_name = "OP_LINK", |
58e7b33a | 1729 | .op_rsize_bop = (nfsd4op_rsize)nfsd4_link_rsize, |
b591480b BF |
1730 | }, |
1731 | [OP_LOCK] = { | |
1732 | .op_func = (nfsd4op_func)nfsd4_lock, | |
58e7b33a | 1733 | .op_flags = OP_MODIFIES_SOMETHING, |
b001a1b6 | 1734 | .op_name = "OP_LOCK", |
58e7b33a | 1735 | .op_rsize_bop = (nfsd4op_rsize)nfsd4_lock_rsize, |
62cd4a59 | 1736 | .op_set_currentstateid = (stateid_setter)nfsd4_set_lockstateid, |
b591480b BF |
1737 | }, |
1738 | [OP_LOCKT] = { | |
1739 | .op_func = (nfsd4op_func)nfsd4_lockt, | |
b001a1b6 | 1740 | .op_name = "OP_LOCKT", |
b591480b BF |
1741 | }, |
1742 | [OP_LOCKU] = { | |
1743 | .op_func = (nfsd4op_func)nfsd4_locku, | |
58e7b33a | 1744 | .op_flags = OP_MODIFIES_SOMETHING, |
b001a1b6 | 1745 | .op_name = "OP_LOCKU", |
58e7b33a | 1746 | .op_rsize_bop = (nfsd4op_rsize)nfsd4_status_stateid_rsize, |
62cd4a59 | 1747 | .op_get_currentstateid = (stateid_getter)nfsd4_get_lockustateid, |
b591480b BF |
1748 | }, |
1749 | [OP_LOOKUP] = { | |
1750 | .op_func = (nfsd4op_func)nfsd4_lookup, | |
d1471053 | 1751 | .op_flags = OP_HANDLES_WRONGSEC | OP_CLEAR_STATEID, |
b001a1b6 | 1752 | .op_name = "OP_LOOKUP", |
b591480b BF |
1753 | }, |
1754 | [OP_LOOKUPP] = { | |
1755 | .op_func = (nfsd4op_func)nfsd4_lookupp, | |
d1471053 | 1756 | .op_flags = OP_HANDLES_WRONGSEC | OP_CLEAR_STATEID, |
b001a1b6 | 1757 | .op_name = "OP_LOOKUPP", |
b591480b BF |
1758 | }, |
1759 | [OP_NVERIFY] = { | |
1760 | .op_func = (nfsd4op_func)nfsd4_nverify, | |
b001a1b6 | 1761 | .op_name = "OP_NVERIFY", |
b591480b BF |
1762 | }, |
1763 | [OP_OPEN] = { | |
1764 | .op_func = (nfsd4op_func)nfsd4_open, | |
58e7b33a | 1765 | .op_flags = OP_HANDLES_WRONGSEC | OP_MODIFIES_SOMETHING, |
b001a1b6 | 1766 | .op_name = "OP_OPEN", |
58e7b33a | 1767 | .op_rsize_bop = (nfsd4op_rsize)nfsd4_open_rsize, |
8b70484c | 1768 | .op_set_currentstateid = (stateid_setter)nfsd4_set_openstateid, |
b591480b BF |
1769 | }, |
1770 | [OP_OPEN_CONFIRM] = { | |
1771 | .op_func = (nfsd4op_func)nfsd4_open_confirm, | |
58e7b33a | 1772 | .op_flags = OP_MODIFIES_SOMETHING, |
b001a1b6 | 1773 | .op_name = "OP_OPEN_CONFIRM", |
58e7b33a | 1774 | .op_rsize_bop = (nfsd4op_rsize)nfsd4_status_stateid_rsize, |
b591480b BF |
1775 | }, |
1776 | [OP_OPEN_DOWNGRADE] = { | |
1777 | .op_func = (nfsd4op_func)nfsd4_open_downgrade, | |
58e7b33a | 1778 | .op_flags = OP_MODIFIES_SOMETHING, |
b001a1b6 | 1779 | .op_name = "OP_OPEN_DOWNGRADE", |
58e7b33a | 1780 | .op_rsize_bop = (nfsd4op_rsize)nfsd4_status_stateid_rsize, |
9428fe1a TM |
1781 | .op_get_currentstateid = (stateid_getter)nfsd4_get_opendowngradestateid, |
1782 | .op_set_currentstateid = (stateid_setter)nfsd4_set_opendowngradestateid, | |
b591480b BF |
1783 | }, |
1784 | [OP_PUTFH] = { | |
1785 | .op_func = (nfsd4op_func)nfsd4_putfh, | |
68d93184 | 1786 | .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS |
5b648699 | 1787 | | OP_IS_PUTFH_LIKE | OP_CLEAR_STATEID, |
b001a1b6 | 1788 | .op_name = "OP_PUTFH", |
58e7b33a | 1789 | .op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize, |
b591480b | 1790 | }, |
eeac294e | 1791 | [OP_PUTPUBFH] = { |
a1c8c4d1 | 1792 | .op_func = (nfsd4op_func)nfsd4_putrootfh, |
68d93184 | 1793 | .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS |
5b648699 | 1794 | | OP_IS_PUTFH_LIKE | OP_CLEAR_STATEID, |
b001a1b6 | 1795 | .op_name = "OP_PUTPUBFH", |
58e7b33a | 1796 | .op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize, |
eeac294e | 1797 | }, |
b591480b BF |
1798 | [OP_PUTROOTFH] = { |
1799 | .op_func = (nfsd4op_func)nfsd4_putrootfh, | |
68d93184 | 1800 | .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS |
5b648699 | 1801 | | OP_IS_PUTFH_LIKE | OP_CLEAR_STATEID, |
b001a1b6 | 1802 | .op_name = "OP_PUTROOTFH", |
58e7b33a | 1803 | .op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize, |
b591480b BF |
1804 | }, |
1805 | [OP_READ] = { | |
1806 | .op_func = (nfsd4op_func)nfsd4_read, | |
b001a1b6 | 1807 | .op_name = "OP_READ", |
58e7b33a | 1808 | .op_rsize_bop = (nfsd4op_rsize)nfsd4_read_rsize, |
30813e27 | 1809 | .op_get_currentstateid = (stateid_getter)nfsd4_get_readstateid, |
b591480b BF |
1810 | }, |
1811 | [OP_READDIR] = { | |
1812 | .op_func = (nfsd4op_func)nfsd4_readdir, | |
b001a1b6 | 1813 | .op_name = "OP_READDIR", |
58e7b33a | 1814 | .op_rsize_bop = (nfsd4op_rsize)nfsd4_readdir_rsize, |
b591480b BF |
1815 | }, |
1816 | [OP_READLINK] = { | |
1817 | .op_func = (nfsd4op_func)nfsd4_readlink, | |
b001a1b6 | 1818 | .op_name = "OP_READLINK", |
b591480b BF |
1819 | }, |
1820 | [OP_REMOVE] = { | |
1821 | .op_func = (nfsd4op_func)nfsd4_remove, | |
c856694e | 1822 | .op_flags = OP_MODIFIES_SOMETHING | OP_CACHEME, |
b001a1b6 | 1823 | .op_name = "OP_REMOVE", |
58e7b33a | 1824 | .op_rsize_bop = (nfsd4op_rsize)nfsd4_remove_rsize, |
b591480b BF |
1825 | }, |
1826 | [OP_RENAME] = { | |
1827 | .op_func = (nfsd4op_func)nfsd4_rename, | |
c856694e | 1828 | .op_flags = OP_MODIFIES_SOMETHING | OP_CACHEME, |
58e7b33a | 1829 | .op_name = "OP_RENAME", |
58e7b33a | 1830 | .op_rsize_bop = (nfsd4op_rsize)nfsd4_rename_rsize, |
b591480b BF |
1831 | }, |
1832 | [OP_RENEW] = { | |
1833 | .op_func = (nfsd4op_func)nfsd4_renew, | |
58e7b33a MJ |
1834 | .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS |
1835 | | OP_MODIFIES_SOMETHING, | |
b001a1b6 | 1836 | .op_name = "OP_RENEW", |
58e7b33a MJ |
1837 | .op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize, |
1838 | ||
b591480b BF |
1839 | }, |
1840 | [OP_RESTOREFH] = { | |
1841 | .op_func = (nfsd4op_func)nfsd4_restorefh, | |
68d93184 | 1842 | .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS |
58e7b33a | 1843 | | OP_IS_PUTFH_LIKE | OP_MODIFIES_SOMETHING, |
b001a1b6 | 1844 | .op_name = "OP_RESTOREFH", |
58e7b33a | 1845 | .op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize, |
b591480b BF |
1846 | }, |
1847 | [OP_SAVEFH] = { | |
1848 | .op_func = (nfsd4op_func)nfsd4_savefh, | |
58e7b33a | 1849 | .op_flags = OP_HANDLES_WRONGSEC | OP_MODIFIES_SOMETHING, |
b001a1b6 | 1850 | .op_name = "OP_SAVEFH", |
58e7b33a | 1851 | .op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize, |
b591480b | 1852 | }, |
dcb488a3 AA |
1853 | [OP_SECINFO] = { |
1854 | .op_func = (nfsd4op_func)nfsd4_secinfo, | |
68d93184 | 1855 | .op_flags = OP_HANDLES_WRONGSEC, |
b001a1b6 | 1856 | .op_name = "OP_SECINFO", |
dcb488a3 | 1857 | }, |
b591480b BF |
1858 | [OP_SETATTR] = { |
1859 | .op_func = (nfsd4op_func)nfsd4_setattr, | |
b001a1b6 | 1860 | .op_name = "OP_SETATTR", |
c856694e | 1861 | .op_flags = OP_MODIFIES_SOMETHING | OP_CACHEME, |
58e7b33a | 1862 | .op_rsize_bop = (nfsd4op_rsize)nfsd4_setattr_rsize, |
1e97b519 | 1863 | .op_get_currentstateid = (stateid_getter)nfsd4_get_setattrstateid, |
b591480b BF |
1864 | }, |
1865 | [OP_SETCLIENTID] = { | |
1866 | .op_func = (nfsd4op_func)nfsd4_setclientid, | |
58e7b33a | 1867 | .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS |
c856694e | 1868 | | OP_MODIFIES_SOMETHING | OP_CACHEME, |
b001a1b6 | 1869 | .op_name = "OP_SETCLIENTID", |
58e7b33a | 1870 | .op_rsize_bop = (nfsd4op_rsize)nfsd4_setclientid_rsize, |
b591480b BF |
1871 | }, |
1872 | [OP_SETCLIENTID_CONFIRM] = { | |
1873 | .op_func = (nfsd4op_func)nfsd4_setclientid_confirm, | |
58e7b33a | 1874 | .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS |
c856694e | 1875 | | OP_MODIFIES_SOMETHING | OP_CACHEME, |
b001a1b6 | 1876 | .op_name = "OP_SETCLIENTID_CONFIRM", |
58e7b33a | 1877 | .op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize, |
b591480b BF |
1878 | }, |
1879 | [OP_VERIFY] = { | |
1880 | .op_func = (nfsd4op_func)nfsd4_verify, | |
b001a1b6 | 1881 | .op_name = "OP_VERIFY", |
b591480b BF |
1882 | }, |
1883 | [OP_WRITE] = { | |
1884 | .op_func = (nfsd4op_func)nfsd4_write, | |
c856694e | 1885 | .op_flags = OP_MODIFIES_SOMETHING | OP_CACHEME, |
b001a1b6 | 1886 | .op_name = "OP_WRITE", |
58e7b33a | 1887 | .op_rsize_bop = (nfsd4op_rsize)nfsd4_write_rsize, |
30813e27 | 1888 | .op_get_currentstateid = (stateid_getter)nfsd4_get_writestateid, |
b591480b BF |
1889 | }, |
1890 | [OP_RELEASE_LOCKOWNER] = { | |
1891 | .op_func = (nfsd4op_func)nfsd4_release_lockowner, | |
58e7b33a MJ |
1892 | .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS |
1893 | | OP_MODIFIES_SOMETHING, | |
b001a1b6 | 1894 | .op_name = "OP_RELEASE_LOCKOWNER", |
58e7b33a | 1895 | .op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize, |
b591480b | 1896 | }, |
069b6ad4 AA |
1897 | |
1898 | /* NFSv4.1 operations */ | |
1899 | [OP_EXCHANGE_ID] = { | |
1900 | .op_func = (nfsd4op_func)nfsd4_exchange_id, | |
58e7b33a MJ |
1901 | .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP |
1902 | | OP_MODIFIES_SOMETHING, | |
069b6ad4 | 1903 | .op_name = "OP_EXCHANGE_ID", |
58e7b33a | 1904 | .op_rsize_bop = (nfsd4op_rsize)nfsd4_exchange_id_rsize, |
069b6ad4 | 1905 | }, |
cb73a9f4 BF |
1906 | [OP_BACKCHANNEL_CTL] = { |
1907 | .op_func = (nfsd4op_func)nfsd4_backchannel_ctl, | |
1908 | .op_flags = ALLOWED_WITHOUT_FH | OP_MODIFIES_SOMETHING, | |
1909 | .op_name = "OP_BACKCHANNEL_CTL", | |
1910 | .op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize, | |
1911 | }, | |
1d1bc8f2 BF |
1912 | [OP_BIND_CONN_TO_SESSION] = { |
1913 | .op_func = (nfsd4op_func)nfsd4_bind_conn_to_session, | |
58e7b33a MJ |
1914 | .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP |
1915 | | OP_MODIFIES_SOMETHING, | |
1d1bc8f2 | 1916 | .op_name = "OP_BIND_CONN_TO_SESSION", |
58e7b33a | 1917 | .op_rsize_bop = (nfsd4op_rsize)nfsd4_bind_conn_to_session_rsize, |
1d1bc8f2 | 1918 | }, |
069b6ad4 AA |
1919 | [OP_CREATE_SESSION] = { |
1920 | .op_func = (nfsd4op_func)nfsd4_create_session, | |
58e7b33a MJ |
1921 | .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP |
1922 | | OP_MODIFIES_SOMETHING, | |
069b6ad4 | 1923 | .op_name = "OP_CREATE_SESSION", |
58e7b33a | 1924 | .op_rsize_bop = (nfsd4op_rsize)nfsd4_create_session_rsize, |
069b6ad4 AA |
1925 | }, |
1926 | [OP_DESTROY_SESSION] = { | |
1927 | .op_func = (nfsd4op_func)nfsd4_destroy_session, | |
58e7b33a MJ |
1928 | .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP |
1929 | | OP_MODIFIES_SOMETHING, | |
069b6ad4 | 1930 | .op_name = "OP_DESTROY_SESSION", |
58e7b33a | 1931 | .op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize, |
069b6ad4 AA |
1932 | }, |
1933 | [OP_SEQUENCE] = { | |
1934 | .op_func = (nfsd4op_func)nfsd4_sequence, | |
f9bb94c4 | 1935 | .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP, |
069b6ad4 | 1936 | .op_name = "OP_SEQUENCE", |
d1d84c96 | 1937 | .op_rsize_bop = (nfsd4op_rsize)nfsd4_sequence_rsize, |
069b6ad4 | 1938 | }, |
094b5d74 | 1939 | [OP_DESTROY_CLIENTID] = { |
345c2842 | 1940 | .op_func = (nfsd4op_func)nfsd4_destroy_clientid, |
58e7b33a MJ |
1941 | .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP |
1942 | | OP_MODIFIES_SOMETHING, | |
094b5d74 | 1943 | .op_name = "OP_DESTROY_CLIENTID", |
58e7b33a | 1944 | .op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize, |
094b5d74 | 1945 | }, |
4dc6ec00 BF |
1946 | [OP_RECLAIM_COMPLETE] = { |
1947 | .op_func = (nfsd4op_func)nfsd4_reclaim_complete, | |
58e7b33a | 1948 | .op_flags = ALLOWED_WITHOUT_FH | OP_MODIFIES_SOMETHING, |
4dc6ec00 | 1949 | .op_name = "OP_RECLAIM_COMPLETE", |
58e7b33a | 1950 | .op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize, |
4dc6ec00 | 1951 | }, |
04f4ad16 BF |
1952 | [OP_SECINFO_NO_NAME] = { |
1953 | .op_func = (nfsd4op_func)nfsd4_secinfo_no_name, | |
68d93184 | 1954 | .op_flags = OP_HANDLES_WRONGSEC, |
04f4ad16 BF |
1955 | .op_name = "OP_SECINFO_NO_NAME", |
1956 | }, | |
17456804 BS |
1957 | [OP_TEST_STATEID] = { |
1958 | .op_func = (nfsd4op_func)nfsd4_test_stateid, | |
1959 | .op_flags = ALLOWED_WITHOUT_FH, | |
1960 | .op_name = "OP_TEST_STATEID", | |
1961 | }, | |
e1ca12df BS |
1962 | [OP_FREE_STATEID] = { |
1963 | .op_func = (nfsd4op_func)nfsd4_free_stateid, | |
58e7b33a | 1964 | .op_flags = ALLOWED_WITHOUT_FH | OP_MODIFIES_SOMETHING, |
e1ca12df | 1965 | .op_name = "OP_FREE_STATEID", |
a1dc6955 | 1966 | .op_get_currentstateid = (stateid_getter)nfsd4_get_freestateid, |
58e7b33a | 1967 | .op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize, |
e1ca12df | 1968 | }, |
24bab491 AS |
1969 | |
1970 | /* NFSv4.2 operations */ | |
95d871f0 AS |
1971 | [OP_ALLOCATE] = { |
1972 | .op_func = (nfsd4op_func)nfsd4_allocate, | |
1973 | .op_flags = OP_MODIFIES_SOMETHING | OP_CACHEME, | |
1974 | .op_name = "OP_ALLOCATE", | |
1975 | .op_rsize_bop = (nfsd4op_rsize)nfsd4_write_rsize, | |
1976 | }, | |
b0cb9085 AS |
1977 | [OP_DEALLOCATE] = { |
1978 | .op_func = (nfsd4op_func)nfsd4_deallocate, | |
1979 | .op_flags = OP_MODIFIES_SOMETHING | OP_CACHEME, | |
1980 | .op_name = "OP_DEALLOCATE", | |
1981 | .op_rsize_bop = (nfsd4op_rsize)nfsd4_write_rsize, | |
1982 | }, | |
24bab491 AS |
1983 | [OP_SEEK] = { |
1984 | .op_func = (nfsd4op_func)nfsd4_seek, | |
1985 | .op_name = "OP_SEEK", | |
1986 | }, | |
b591480b BF |
1987 | }; |
1988 | ||
4f0cefbf BF |
1989 | int nfsd4_max_reply(struct svc_rqst *rqstp, struct nfsd4_op *op) |
1990 | { | |
1991 | struct nfsd4_operation *opdesc; | |
1992 | nfsd4op_rsize estimator; | |
1993 | ||
1994 | if (op->opnum == OP_ILLEGAL) | |
1995 | return op_encode_hdr_size * sizeof(__be32); | |
1996 | opdesc = OPDESC(op); | |
1997 | estimator = opdesc->op_rsize_bop; | |
1998 | return estimator ? estimator(rqstp, op) : PAGE_SIZE; | |
1999 | } | |
2000 | ||
07d1f802 BF |
2001 | void warn_on_nonidempotent_op(struct nfsd4_op *op) |
2002 | { | |
2003 | if (OPDESC(op)->op_flags & OP_MODIFIES_SOMETHING) { | |
2004 | pr_err("unable to encode reply to nonidempotent op %d (%s)\n", | |
2005 | op->opnum, nfsd4_op_name(op->opnum)); | |
2006 | WARN_ON_ONCE(1); | |
2007 | } | |
2008 | } | |
2009 | ||
f1c7f79b | 2010 | static const char *nfsd4_op_name(unsigned opnum) |
b001a1b6 BH |
2011 | { |
2012 | if (opnum < ARRAY_SIZE(nfsd4_ops)) | |
2013 | return nfsd4_ops[opnum].op_name; | |
2014 | return "unknown_operation"; | |
2015 | } | |
2016 | ||
1da177e4 | 2017 | #define nfsd4_voidres nfsd4_voidargs |
1da177e4 LT |
2018 | struct nfsd4_voidargs { int dummy; }; |
2019 | ||
1da177e4 | 2020 | static struct svc_procedure nfsd_procedures4[2] = { |
0a93a47f YZ |
2021 | [NFSPROC4_NULL] = { |
2022 | .pc_func = (svc_procfunc) nfsd4_proc_null, | |
2023 | .pc_encode = (kxdrproc_t) nfs4svc_encode_voidres, | |
2024 | .pc_argsize = sizeof(struct nfsd4_voidargs), | |
2025 | .pc_ressize = sizeof(struct nfsd4_voidres), | |
2026 | .pc_cachetype = RC_NOCACHE, | |
2027 | .pc_xdrressize = 1, | |
2028 | }, | |
2029 | [NFSPROC4_COMPOUND] = { | |
2030 | .pc_func = (svc_procfunc) nfsd4_proc_compound, | |
2031 | .pc_decode = (kxdrproc_t) nfs4svc_decode_compoundargs, | |
2032 | .pc_encode = (kxdrproc_t) nfs4svc_encode_compoundres, | |
2033 | .pc_argsize = sizeof(struct nfsd4_compoundargs), | |
2034 | .pc_ressize = sizeof(struct nfsd4_compoundres), | |
3e98abff | 2035 | .pc_release = nfsd4_release_compoundargs, |
0a93a47f YZ |
2036 | .pc_cachetype = RC_NOCACHE, |
2037 | .pc_xdrressize = NFSD_BUFSIZE/4, | |
2038 | }, | |
1da177e4 LT |
2039 | }; |
2040 | ||
2041 | struct svc_version nfsd_version4 = { | |
2042 | .vs_vers = 4, | |
2043 | .vs_nproc = 2, | |
2044 | .vs_proc = nfsd_procedures4, | |
2045 | .vs_dispatch = nfsd_dispatch, | |
2046 | .vs_xdrsize = NFS4_SVC_XDRSIZE, | |
7e55b59b | 2047 | .vs_rpcb_optnl = 1, |
1da177e4 LT |
2048 | }; |
2049 | ||
2050 | /* | |
2051 | * Local variables: | |
2052 | * c-basic-offset: 8 | |
2053 | * End: | |
2054 | */ |