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1da177e4 | 1 | /* |
1da177e4 LT |
2 | * Server-side procedures for NFSv4. |
3 | * | |
4 | * Copyright (c) 2002 The Regents of the University of Michigan. | |
5 | * All rights reserved. | |
6 | * | |
7 | * Kendrick Smith <kmsmith@umich.edu> | |
8 | * Andy Adamson <andros@umich.edu> | |
9 | * | |
10 | * Redistribution and use in source and binary forms, with or without | |
11 | * modification, are permitted provided that the following conditions | |
12 | * are met: | |
13 | * | |
14 | * 1. Redistributions of source code must retain the above copyright | |
15 | * notice, this list of conditions and the following disclaimer. | |
16 | * 2. Redistributions in binary form must reproduce the above copyright | |
17 | * notice, this list of conditions and the following disclaimer in the | |
18 | * documentation and/or other materials provided with the distribution. | |
19 | * 3. Neither the name of the University nor the names of its | |
20 | * contributors may be used to endorse or promote products derived | |
21 | * from this software without specific prior written permission. | |
22 | * | |
23 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED | |
24 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF | |
25 | * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE | |
26 | * DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | |
27 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR | |
28 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF | |
29 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR | |
30 | * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF | |
31 | * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING | |
32 | * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS | |
33 | * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
1da177e4 | 34 | */ |
7e06b7f9 | 35 | #include <linux/file.h> |
5a0e3ad6 | 36 | #include <linux/slab.h> |
1da177e4 | 37 | |
58e7b33a | 38 | #include "idmap.h" |
9a74af21 BH |
39 | #include "cache.h" |
40 | #include "xdr4.h" | |
0a3adade | 41 | #include "vfs.h" |
8b70484c | 42 | #include "current_stateid.h" |
3320fef1 | 43 | #include "netns.h" |
4ac7249e | 44 | #include "acl.h" |
1da177e4 | 45 | |
18032ca0 DQ |
46 | #ifdef CONFIG_NFSD_V4_SECURITY_LABEL |
47 | #include <linux/security.h> | |
48 | ||
49 | static inline void | |
50 | nfsd4_security_inode_setsecctx(struct svc_fh *resfh, struct xdr_netobj *label, u32 *bmval) | |
51 | { | |
52 | struct inode *inode = resfh->fh_dentry->d_inode; | |
53 | int status; | |
54 | ||
55 | mutex_lock(&inode->i_mutex); | |
56 | status = security_inode_setsecctx(resfh->fh_dentry, | |
57 | label->data, label->len); | |
58 | mutex_unlock(&inode->i_mutex); | |
59 | ||
60 | if (status) | |
61 | /* | |
62 | * XXX: We should really fail the whole open, but we may | |
63 | * already have created a new file, so it may be too | |
64 | * late. For now this seems the least of evils: | |
65 | */ | |
66 | bmval[2] &= ~FATTR4_WORD2_SECURITY_LABEL; | |
67 | ||
68 | return; | |
69 | } | |
70 | #else | |
71 | static inline void | |
72 | nfsd4_security_inode_setsecctx(struct svc_fh *resfh, struct xdr_netobj *label, u32 *bmval) | |
73 | { } | |
74 | #endif | |
75 | ||
1da177e4 LT |
76 | #define NFSDDBG_FACILITY NFSDDBG_PROC |
77 | ||
3c8e0316 YZ |
78 | static u32 nfsd_attrmask[] = { |
79 | NFSD_WRITEABLE_ATTRS_WORD0, | |
80 | NFSD_WRITEABLE_ATTRS_WORD1, | |
81 | NFSD_WRITEABLE_ATTRS_WORD2 | |
82 | }; | |
83 | ||
84 | static u32 nfsd41_ex_attrmask[] = { | |
85 | NFSD_SUPPATTR_EXCLCREAT_WORD0, | |
86 | NFSD_SUPPATTR_EXCLCREAT_WORD1, | |
87 | NFSD_SUPPATTR_EXCLCREAT_WORD2 | |
88 | }; | |
89 | ||
90 | static __be32 | |
91 | check_attr_support(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, | |
92 | u32 *bmval, u32 *writable) | |
93 | { | |
94 | struct dentry *dentry = cstate->current_fh.fh_dentry; | |
3c8e0316 YZ |
95 | |
96 | /* | |
97 | * Check about attributes are supported by the NFSv4 server or not. | |
98 | * According to spec, unsupported attributes return ERR_ATTRNOTSUPP. | |
99 | */ | |
100 | if ((bmval[0] & ~nfsd_suppattrs0(cstate->minorversion)) || | |
101 | (bmval[1] & ~nfsd_suppattrs1(cstate->minorversion)) || | |
102 | (bmval[2] & ~nfsd_suppattrs2(cstate->minorversion))) | |
103 | return nfserr_attrnotsupp; | |
104 | ||
105 | /* | |
a06b1261 | 106 | * Check FATTR4_WORD0_ACL can be supported |
3c8e0316 YZ |
107 | * in current environment or not. |
108 | */ | |
109 | if (bmval[0] & FATTR4_WORD0_ACL) { | |
110 | if (!IS_POSIXACL(dentry->d_inode)) | |
111 | return nfserr_attrnotsupp; | |
112 | } | |
3c8e0316 YZ |
113 | |
114 | /* | |
115 | * According to spec, read-only attributes return ERR_INVAL. | |
116 | */ | |
117 | if (writable) { | |
118 | if ((bmval[0] & ~writable[0]) || (bmval[1] & ~writable[1]) || | |
119 | (bmval[2] & ~writable[2])) | |
120 | return nfserr_inval; | |
121 | } | |
122 | ||
123 | return nfs_ok; | |
124 | } | |
125 | ||
126 | static __be32 | |
127 | nfsd4_check_open_attributes(struct svc_rqst *rqstp, | |
128 | struct nfsd4_compound_state *cstate, struct nfsd4_open *open) | |
129 | { | |
130 | __be32 status = nfs_ok; | |
131 | ||
132 | if (open->op_create == NFS4_OPEN_CREATE) { | |
133 | if (open->op_createmode == NFS4_CREATE_UNCHECKED | |
134 | || open->op_createmode == NFS4_CREATE_GUARDED) | |
135 | status = check_attr_support(rqstp, cstate, | |
136 | open->op_bmval, nfsd_attrmask); | |
137 | else if (open->op_createmode == NFS4_CREATE_EXCLUSIVE4_1) | |
138 | status = check_attr_support(rqstp, cstate, | |
139 | open->op_bmval, nfsd41_ex_attrmask); | |
140 | } | |
141 | ||
142 | return status; | |
143 | } | |
144 | ||
9208faf2 YZ |
145 | static int |
146 | is_create_with_attrs(struct nfsd4_open *open) | |
147 | { | |
148 | return open->op_create == NFS4_OPEN_CREATE | |
149 | && (open->op_createmode == NFS4_CREATE_UNCHECKED | |
150 | || open->op_createmode == NFS4_CREATE_GUARDED | |
151 | || open->op_createmode == NFS4_CREATE_EXCLUSIVE4_1); | |
152 | } | |
153 | ||
154 | /* | |
155 | * if error occurs when setting the acl, just clear the acl bit | |
156 | * in the returned attr bitmap. | |
157 | */ | |
158 | static void | |
159 | do_set_nfs4_acl(struct svc_rqst *rqstp, struct svc_fh *fhp, | |
160 | struct nfs4_acl *acl, u32 *bmval) | |
161 | { | |
162 | __be32 status; | |
163 | ||
164 | status = nfsd4_set_nfs4_acl(rqstp, fhp, acl); | |
165 | if (status) | |
166 | /* | |
167 | * We should probably fail the whole open at this point, | |
168 | * but we've already created the file, so it's too late; | |
169 | * So this seems the least of evils: | |
170 | */ | |
171 | bmval[0] &= ~FATTR4_WORD0_ACL; | |
172 | } | |
173 | ||
1da177e4 LT |
174 | static inline void |
175 | fh_dup2(struct svc_fh *dst, struct svc_fh *src) | |
176 | { | |
177 | fh_put(dst); | |
178 | dget(src->fh_dentry); | |
179 | if (src->fh_export) | |
bf18f163 | 180 | exp_get(src->fh_export); |
1da177e4 LT |
181 | *dst = *src; |
182 | } | |
183 | ||
b37ad28b | 184 | static __be32 |
dc730e17 | 185 | do_open_permission(struct svc_rqst *rqstp, struct svc_fh *current_fh, struct nfsd4_open *open, int accmode) |
1da177e4 | 186 | { |
b37ad28b | 187 | __be32 status; |
1da177e4 LT |
188 | |
189 | if (open->op_truncate && | |
190 | !(open->op_share_access & NFS4_SHARE_ACCESS_WRITE)) | |
191 | return nfserr_inval; | |
192 | ||
a043226b BF |
193 | accmode |= NFSD_MAY_READ_IF_EXEC; |
194 | ||
1da177e4 | 195 | if (open->op_share_access & NFS4_SHARE_ACCESS_READ) |
8837abca | 196 | accmode |= NFSD_MAY_READ; |
9801d8a3 | 197 | if (open->op_share_access & NFS4_SHARE_ACCESS_WRITE) |
8837abca | 198 | accmode |= (NFSD_MAY_WRITE | NFSD_MAY_TRUNC); |
57ecb34f | 199 | if (open->op_share_deny & NFS4_SHARE_DENY_READ) |
8837abca | 200 | accmode |= NFSD_MAY_WRITE; |
1da177e4 LT |
201 | |
202 | status = fh_verify(rqstp, current_fh, S_IFREG, accmode); | |
203 | ||
204 | return status; | |
205 | } | |
206 | ||
aadab6c6 BF |
207 | static __be32 nfsd_check_obj_isreg(struct svc_fh *fh) |
208 | { | |
209 | umode_t mode = fh->fh_dentry->d_inode->i_mode; | |
210 | ||
211 | if (S_ISREG(mode)) | |
212 | return nfs_ok; | |
213 | if (S_ISDIR(mode)) | |
214 | return nfserr_isdir; | |
215 | /* | |
216 | * Using err_symlink as our catch-all case may look odd; but | |
217 | * there's no other obvious error for this case in 4.0, and we | |
218 | * happen to know that it will cause the linux v4 client to do | |
219 | * the right thing on attempts to open something other than a | |
220 | * regular file. | |
221 | */ | |
222 | return nfserr_symlink; | |
223 | } | |
224 | ||
bbc9c36c BF |
225 | static void nfsd4_set_open_owner_reply_cache(struct nfsd4_compound_state *cstate, struct nfsd4_open *open, struct svc_fh *resfh) |
226 | { | |
227 | if (nfsd4_has_session(cstate)) | |
228 | return; | |
229 | fh_copy_shallow(&open->op_openowner->oo_owner.so_replay.rp_openfh, | |
230 | &resfh->fh_handle); | |
231 | } | |
232 | ||
b37ad28b | 233 | static __be32 |
c0e6bee4 | 234 | do_open_lookup(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, struct nfsd4_open *open, struct svc_fh **resfh) |
1da177e4 | 235 | { |
bbc9c36c | 236 | struct svc_fh *current_fh = &cstate->current_fh; |
7007c90f | 237 | int accmode; |
b37ad28b | 238 | __be32 status; |
1da177e4 | 239 | |
c0e6bee4 BF |
240 | *resfh = kmalloc(sizeof(struct svc_fh), GFP_KERNEL); |
241 | if (!*resfh) | |
59deeb9e | 242 | return nfserr_jukebox; |
c0e6bee4 | 243 | fh_init(*resfh, NFS4_FHSIZE); |
1da177e4 LT |
244 | open->op_truncate = 0; |
245 | ||
246 | if (open->op_create) { | |
79fb54ab BH |
247 | /* FIXME: check session persistence and pnfs flags. |
248 | * The nfsv4.1 spec requires the following semantics: | |
249 | * | |
250 | * Persistent | pNFS | Server REQUIRED | Client Allowed | |
251 | * Reply Cache | server | | | |
252 | * -------------+--------+-----------------+-------------------- | |
253 | * no | no | EXCLUSIVE4_1 | EXCLUSIVE4_1 | |
254 | * | | | (SHOULD) | |
255 | * | | and EXCLUSIVE4 | or EXCLUSIVE4 | |
256 | * | | | (SHOULD NOT) | |
257 | * no | yes | EXCLUSIVE4_1 | EXCLUSIVE4_1 | |
258 | * yes | no | GUARDED4 | GUARDED4 | |
259 | * yes | yes | GUARDED4 | GUARDED4 | |
260 | */ | |
261 | ||
1da177e4 LT |
262 | /* |
263 | * Note: create modes (UNCHECKED,GUARDED...) are the same | |
ac6721a1 | 264 | * in NFSv4 as in v3 except EXCLUSIVE4_1. |
1da177e4 | 265 | */ |
ac6721a1 | 266 | status = do_nfsd_create(rqstp, current_fh, open->op_fname.data, |
1da177e4 | 267 | open->op_fname.len, &open->op_iattr, |
c0e6bee4 | 268 | *resfh, open->op_createmode, |
749997e5 | 269 | (u32 *)open->op_verf.data, |
856121b2 | 270 | &open->op_truncate, &open->op_created); |
749997e5 | 271 | |
18032ca0 | 272 | if (!status && open->op_label.len) |
c0e6bee4 | 273 | nfsd4_security_inode_setsecctx(*resfh, &open->op_label, open->op_bmval); |
18032ca0 | 274 | |
99f88726 BF |
275 | /* |
276 | * Following rfc 3530 14.2.16, use the returned bitmask | |
277 | * to indicate which attributes we used to store the | |
278 | * verifier: | |
749997e5 JL |
279 | */ |
280 | if (open->op_createmode == NFS4_CREATE_EXCLUSIVE && status == 0) | |
99f88726 | 281 | open->op_bmval[1] = (FATTR4_WORD1_TIME_ACCESS | |
9dc4e6c4 | 282 | FATTR4_WORD1_TIME_MODIFY); |
4335723e BF |
283 | } else |
284 | /* | |
285 | * Note this may exit with the parent still locked. | |
286 | * We will hold the lock until nfsd4_open's final | |
287 | * lookup, to prevent renames or unlinks until we've had | |
288 | * a chance to an acquire a delegation if appropriate. | |
289 | */ | |
1da177e4 | 290 | status = nfsd_lookup(rqstp, current_fh, |
c0e6bee4 | 291 | open->op_fname.data, open->op_fname.len, *resfh); |
9dc4e6c4 BF |
292 | if (status) |
293 | goto out; | |
c0e6bee4 | 294 | status = nfsd_check_obj_isreg(*resfh); |
af85852d BF |
295 | if (status) |
296 | goto out; | |
1da177e4 | 297 | |
9208faf2 | 298 | if (is_create_with_attrs(open) && open->op_acl != NULL) |
c0e6bee4 | 299 | do_set_nfs4_acl(rqstp, *resfh, open->op_acl, open->op_bmval); |
9208faf2 | 300 | |
c0e6bee4 | 301 | nfsd4_set_open_owner_reply_cache(cstate, open, *resfh); |
7007c90f | 302 | accmode = NFSD_MAY_NOP; |
89f6c336 BF |
303 | if (open->op_created || |
304 | open->op_claim_type == NFS4_OPEN_CLAIM_DELEGATE_CUR) | |
7007c90f | 305 | accmode |= NFSD_MAY_OWNER_OVERRIDE; |
c0e6bee4 | 306 | status = do_open_permission(rqstp, *resfh, open, accmode); |
41fd1e42 | 307 | set_change_info(&open->op_cinfo, current_fh); |
af85852d | 308 | out: |
1da177e4 LT |
309 | return status; |
310 | } | |
311 | ||
b37ad28b | 312 | static __be32 |
bbc9c36c | 313 | do_open_fhandle(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, struct nfsd4_open *open) |
1da177e4 | 314 | { |
bbc9c36c | 315 | struct svc_fh *current_fh = &cstate->current_fh; |
b37ad28b | 316 | __be32 status; |
9f415eb2 | 317 | int accmode = 0; |
1da177e4 | 318 | |
1da177e4 LT |
319 | /* We don't know the target directory, and therefore can not |
320 | * set the change info | |
321 | */ | |
322 | ||
323 | memset(&open->op_cinfo, 0, sizeof(struct nfsd4_change_info)); | |
324 | ||
bbc9c36c | 325 | nfsd4_set_open_owner_reply_cache(cstate, open, current_fh); |
1da177e4 LT |
326 | |
327 | open->op_truncate = (open->op_iattr.ia_valid & ATTR_SIZE) && | |
328 | (open->op_iattr.ia_size == 0); | |
9f415eb2 BF |
329 | /* |
330 | * In the delegation case, the client is telling us about an | |
331 | * open that it *already* performed locally, some time ago. We | |
332 | * should let it succeed now if possible. | |
333 | * | |
334 | * In the case of a CLAIM_FH open, on the other hand, the client | |
335 | * may be counting on us to enforce permissions (the Linux 4.1 | |
336 | * client uses this for normal opens, for example). | |
337 | */ | |
338 | if (open->op_claim_type == NFS4_OPEN_CLAIM_DELEG_CUR_FH) | |
339 | accmode = NFSD_MAY_OWNER_OVERRIDE; | |
1da177e4 | 340 | |
9f415eb2 | 341 | status = do_open_permission(rqstp, current_fh, open, accmode); |
1da177e4 LT |
342 | |
343 | return status; | |
344 | } | |
345 | ||
60adfc50 AA |
346 | static void |
347 | copy_clientid(clientid_t *clid, struct nfsd4_session *session) | |
348 | { | |
349 | struct nfsd4_sessionid *sid = | |
350 | (struct nfsd4_sessionid *)session->se_sessionid.data; | |
351 | ||
352 | clid->cl_boot = sid->clientid.cl_boot; | |
353 | clid->cl_id = sid->clientid.cl_id; | |
354 | } | |
1da177e4 | 355 | |
7191155b | 356 | static __be32 |
ca364317 | 357 | nfsd4_open(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
a4f1706a | 358 | struct nfsd4_open *open) |
1da177e4 | 359 | { |
b37ad28b | 360 | __be32 status; |
c0e6bee4 | 361 | struct svc_fh *resfh = NULL; |
6668958f | 362 | struct nfsd4_compoundres *resp; |
3320fef1 SK |
363 | struct net *net = SVC_NET(rqstp); |
364 | struct nfsd_net *nn = net_generic(net, nfsd_net_id); | |
6668958f | 365 | |
fe0750e5 | 366 | dprintk("NFSD: nfsd4_open filename %.*s op_openowner %p\n", |
1da177e4 | 367 | (int)open->op_fname.len, open->op_fname.data, |
fe0750e5 | 368 | open->op_openowner); |
1da177e4 | 369 | |
1da177e4 LT |
370 | /* This check required by spec. */ |
371 | if (open->op_create && open->op_claim_type != NFS4_OPEN_CLAIM_NULL) | |
372 | return nfserr_inval; | |
373 | ||
856121b2 | 374 | open->op_created = 0; |
ab1350b2 MJ |
375 | /* |
376 | * RFC5661 18.51.3 | |
377 | * Before RECLAIM_COMPLETE done, server should deny new lock | |
378 | */ | |
379 | if (nfsd4_has_session(cstate) && | |
a52d726b JL |
380 | !test_bit(NFSD4_CLIENT_RECLAIM_COMPLETE, |
381 | &cstate->session->se_client->cl_flags) && | |
ab1350b2 MJ |
382 | open->op_claim_type != NFS4_OPEN_CLAIM_PREVIOUS) |
383 | return nfserr_grace; | |
384 | ||
60adfc50 AA |
385 | if (nfsd4_has_session(cstate)) |
386 | copy_clientid(&open->op_clientid, cstate->session); | |
387 | ||
1da177e4 LT |
388 | nfs4_lock_state(); |
389 | ||
390 | /* check seqid for replay. set nfs4_owner */ | |
6668958f | 391 | resp = rqstp->rq_resp; |
3320fef1 | 392 | status = nfsd4_process_open1(&resp->cstate, open, nn); |
a90b061c | 393 | if (status == nfserr_replay_me) { |
fe0750e5 | 394 | struct nfs4_replay *rp = &open->op_openowner->oo_owner.so_replay; |
ca364317 | 395 | fh_put(&cstate->current_fh); |
a4773c08 BF |
396 | fh_copy_shallow(&cstate->current_fh.fh_handle, |
397 | &rp->rp_openfh); | |
8837abca | 398 | status = fh_verify(rqstp, &cstate->current_fh, 0, NFSD_MAY_NOP); |
1da177e4 LT |
399 | if (status) |
400 | dprintk("nfsd4_open: replay failed" | |
401 | " restoring previous filehandle\n"); | |
402 | else | |
a90b061c | 403 | status = nfserr_replay_me; |
1da177e4 LT |
404 | } |
405 | if (status) | |
406 | goto out; | |
9d313b17 BF |
407 | if (open->op_xdr_error) { |
408 | status = open->op_xdr_error; | |
409 | goto out; | |
410 | } | |
fb553c0f | 411 | |
3c8e0316 YZ |
412 | status = nfsd4_check_open_attributes(rqstp, cstate, open); |
413 | if (status) | |
414 | goto out; | |
415 | ||
fb553c0f BF |
416 | /* Openowner is now set, so sequence id will get bumped. Now we need |
417 | * these checks before we do any creates: */ | |
cbd0d51a | 418 | status = nfserr_grace; |
3320fef1 | 419 | if (locks_in_grace(net) && open->op_claim_type != NFS4_OPEN_CLAIM_PREVIOUS) |
cbd0d51a BF |
420 | goto out; |
421 | status = nfserr_no_grace; | |
3320fef1 | 422 | if (!locks_in_grace(net) && open->op_claim_type == NFS4_OPEN_CLAIM_PREVIOUS) |
cbd0d51a | 423 | goto out; |
fb553c0f | 424 | |
1da177e4 | 425 | switch (open->op_claim_type) { |
0dd3c192 | 426 | case NFS4_OPEN_CLAIM_DELEGATE_CUR: |
1da177e4 | 427 | case NFS4_OPEN_CLAIM_NULL: |
c0e6bee4 | 428 | status = do_open_lookup(rqstp, cstate, open, &resfh); |
1da177e4 LT |
429 | if (status) |
430 | goto out; | |
431 | break; | |
432 | case NFS4_OPEN_CLAIM_PREVIOUS: | |
3320fef1 | 433 | status = nfs4_check_open_reclaim(&open->op_clientid, |
0fe492db | 434 | cstate, nn); |
0cf99b91 MJ |
435 | if (status) |
436 | goto out; | |
ba5378b6 | 437 | open->op_openowner->oo_flags |= NFS4_OO_CONFIRMED; |
8b289b2c BF |
438 | case NFS4_OPEN_CLAIM_FH: |
439 | case NFS4_OPEN_CLAIM_DELEG_CUR_FH: | |
bbc9c36c | 440 | status = do_open_fhandle(rqstp, cstate, open); |
1da177e4 LT |
441 | if (status) |
442 | goto out; | |
c0e6bee4 | 443 | resfh = &cstate->current_fh; |
1da177e4 | 444 | break; |
8b289b2c | 445 | case NFS4_OPEN_CLAIM_DELEG_PREV_FH: |
1da177e4 | 446 | case NFS4_OPEN_CLAIM_DELEGATE_PREV: |
2fdada03 | 447 | dprintk("NFSD: unsupported OPEN claim type %d\n", |
1da177e4 LT |
448 | open->op_claim_type); |
449 | status = nfserr_notsupp; | |
450 | goto out; | |
451 | default: | |
2fdada03 | 452 | dprintk("NFSD: Invalid OPEN claim type %d\n", |
1da177e4 LT |
453 | open->op_claim_type); |
454 | status = nfserr_inval; | |
455 | goto out; | |
456 | } | |
457 | /* | |
458 | * nfsd4_process_open2() does the actual opening of the file. If | |
459 | * successful, it (1) truncates the file if open->op_truncate was | |
460 | * set, (2) sets open->op_stateid, (3) sets open->op_delegation. | |
461 | */ | |
c0e6bee4 | 462 | status = nfsd4_process_open2(rqstp, resfh, open); |
856121b2 | 463 | WARN_ON(status && open->op_created); |
1da177e4 | 464 | out: |
c0e6bee4 BF |
465 | if (resfh && resfh != &cstate->current_fh) { |
466 | fh_dup2(&cstate->current_fh, resfh); | |
467 | fh_put(resfh); | |
468 | kfree(resfh); | |
469 | } | |
d29b20cd | 470 | nfsd4_cleanup_open_state(open, status); |
3d74e6a5 | 471 | if (open->op_openowner && !nfsd4_has_session(cstate)) |
fe0750e5 | 472 | cstate->replay_owner = &open->op_openowner->oo_owner; |
9411b1d4 BF |
473 | nfsd4_bump_seqid(cstate, status); |
474 | if (!cstate->replay_owner) | |
5ec094c1 | 475 | nfs4_unlock_state(); |
1da177e4 LT |
476 | return status; |
477 | } | |
478 | ||
9d313b17 BF |
479 | /* |
480 | * OPEN is the only seqid-mutating operation whose decoding can fail | |
481 | * with a seqid-mutating error (specifically, decoding of user names in | |
482 | * the attributes). Therefore we have to do some processing to look up | |
483 | * the stateowner so that we can bump the seqid. | |
484 | */ | |
485 | static __be32 nfsd4_open_omfg(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, struct nfsd4_op *op) | |
486 | { | |
487 | struct nfsd4_open *open = (struct nfsd4_open *)&op->u; | |
488 | ||
489 | if (!seqid_mutating_err(ntohl(op->status))) | |
490 | return op->status; | |
491 | if (nfsd4_has_session(cstate)) | |
492 | return op->status; | |
493 | open->op_xdr_error = op->status; | |
494 | return nfsd4_open(rqstp, cstate, open); | |
495 | } | |
496 | ||
1da177e4 LT |
497 | /* |
498 | * filehandle-manipulating ops. | |
499 | */ | |
7191155b | 500 | static __be32 |
b591480b BF |
501 | nfsd4_getfh(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
502 | struct svc_fh **getfh) | |
1da177e4 | 503 | { |
ca364317 | 504 | if (!cstate->current_fh.fh_dentry) |
1da177e4 LT |
505 | return nfserr_nofilehandle; |
506 | ||
ca364317 | 507 | *getfh = &cstate->current_fh; |
1da177e4 LT |
508 | return nfs_ok; |
509 | } | |
510 | ||
7191155b | 511 | static __be32 |
ca364317 BF |
512 | nfsd4_putfh(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
513 | struct nfsd4_putfh *putfh) | |
1da177e4 | 514 | { |
ca364317 BF |
515 | fh_put(&cstate->current_fh); |
516 | cstate->current_fh.fh_handle.fh_size = putfh->pf_fhlen; | |
517 | memcpy(&cstate->current_fh.fh_handle.fh_base, putfh->pf_fhval, | |
518 | putfh->pf_fhlen); | |
68d93184 | 519 | return fh_verify(rqstp, &cstate->current_fh, 0, NFSD_MAY_BYPASS_GSS); |
1da177e4 LT |
520 | } |
521 | ||
7191155b | 522 | static __be32 |
b591480b BF |
523 | nfsd4_putrootfh(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
524 | void *arg) | |
1da177e4 | 525 | { |
b37ad28b | 526 | __be32 status; |
1da177e4 | 527 | |
ca364317 | 528 | fh_put(&cstate->current_fh); |
df547efb | 529 | status = exp_pseudoroot(rqstp, &cstate->current_fh); |
1da177e4 LT |
530 | return status; |
531 | } | |
532 | ||
7191155b | 533 | static __be32 |
b591480b BF |
534 | nfsd4_restorefh(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
535 | void *arg) | |
1da177e4 | 536 | { |
ca364317 | 537 | if (!cstate->save_fh.fh_dentry) |
1da177e4 LT |
538 | return nfserr_restorefh; |
539 | ||
ca364317 | 540 | fh_dup2(&cstate->current_fh, &cstate->save_fh); |
37c593c5 TM |
541 | if (HAS_STATE_ID(cstate, SAVED_STATE_ID_FLAG)) { |
542 | memcpy(&cstate->current_stateid, &cstate->save_stateid, sizeof(stateid_t)); | |
543 | SET_STATE_ID(cstate, CURRENT_STATE_ID_FLAG); | |
544 | } | |
1da177e4 LT |
545 | return nfs_ok; |
546 | } | |
547 | ||
7191155b | 548 | static __be32 |
b591480b BF |
549 | nfsd4_savefh(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
550 | void *arg) | |
1da177e4 | 551 | { |
ca364317 | 552 | if (!cstate->current_fh.fh_dentry) |
1da177e4 LT |
553 | return nfserr_nofilehandle; |
554 | ||
ca364317 | 555 | fh_dup2(&cstate->save_fh, &cstate->current_fh); |
37c593c5 TM |
556 | if (HAS_STATE_ID(cstate, CURRENT_STATE_ID_FLAG)) { |
557 | memcpy(&cstate->save_stateid, &cstate->current_stateid, sizeof(stateid_t)); | |
558 | SET_STATE_ID(cstate, SAVED_STATE_ID_FLAG); | |
559 | } | |
1da177e4 LT |
560 | return nfs_ok; |
561 | } | |
562 | ||
563 | /* | |
564 | * misc nfsv4 ops | |
565 | */ | |
7191155b | 566 | static __be32 |
ca364317 BF |
567 | nfsd4_access(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
568 | struct nfsd4_access *access) | |
1da177e4 LT |
569 | { |
570 | if (access->ac_req_access & ~NFS3_ACCESS_FULL) | |
571 | return nfserr_inval; | |
572 | ||
573 | access->ac_resp_access = access->ac_req_access; | |
ca364317 BF |
574 | return nfsd_access(rqstp, &cstate->current_fh, &access->ac_resp_access, |
575 | &access->ac_supported); | |
1da177e4 LT |
576 | } |
577 | ||
b9c0ef85 | 578 | static void gen_boot_verifier(nfs4_verifier *verifier, struct net *net) |
ab4684d1 CL |
579 | { |
580 | __be32 verf[2]; | |
b9c0ef85 | 581 | struct nfsd_net *nn = net_generic(net, nfsd_net_id); |
ab4684d1 | 582 | |
f419992c JL |
583 | /* |
584 | * This is opaque to client, so no need to byte-swap. Use | |
585 | * __force to keep sparse happy | |
586 | */ | |
587 | verf[0] = (__force __be32)nn->nfssvc_boot.tv_sec; | |
588 | verf[1] = (__force __be32)nn->nfssvc_boot.tv_usec; | |
ab4684d1 CL |
589 | memcpy(verifier->data, verf, sizeof(verifier->data)); |
590 | } | |
591 | ||
7191155b | 592 | static __be32 |
ca364317 BF |
593 | nfsd4_commit(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
594 | struct nfsd4_commit *commit) | |
1da177e4 | 595 | { |
b9c0ef85 | 596 | gen_boot_verifier(&commit->co_verf, SVC_NET(rqstp)); |
75c096f7 | 597 | return nfsd_commit(rqstp, &cstate->current_fh, commit->co_offset, |
ca364317 | 598 | commit->co_count); |
1da177e4 LT |
599 | } |
600 | ||
b37ad28b | 601 | static __be32 |
ca364317 BF |
602 | nfsd4_create(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
603 | struct nfsd4_create *create) | |
1da177e4 LT |
604 | { |
605 | struct svc_fh resfh; | |
b37ad28b | 606 | __be32 status; |
1da177e4 LT |
607 | dev_t rdev; |
608 | ||
609 | fh_init(&resfh, NFS4_FHSIZE); | |
610 | ||
8837abca MS |
611 | status = fh_verify(rqstp, &cstate->current_fh, S_IFDIR, |
612 | NFSD_MAY_CREATE); | |
1da177e4 LT |
613 | if (status) |
614 | return status; | |
615 | ||
3c8e0316 YZ |
616 | status = check_attr_support(rqstp, cstate, create->cr_bmval, |
617 | nfsd_attrmask); | |
618 | if (status) | |
619 | return status; | |
620 | ||
1da177e4 LT |
621 | switch (create->cr_type) { |
622 | case NF4LNK: | |
ca364317 BF |
623 | status = nfsd_symlink(rqstp, &cstate->current_fh, |
624 | create->cr_name, create->cr_namelen, | |
1e444f5b | 625 | create->cr_data, &resfh); |
1da177e4 LT |
626 | break; |
627 | ||
628 | case NF4BLK: | |
629 | rdev = MKDEV(create->cr_specdata1, create->cr_specdata2); | |
630 | if (MAJOR(rdev) != create->cr_specdata1 || | |
631 | MINOR(rdev) != create->cr_specdata2) | |
632 | return nfserr_inval; | |
ca364317 BF |
633 | status = nfsd_create(rqstp, &cstate->current_fh, |
634 | create->cr_name, create->cr_namelen, | |
635 | &create->cr_iattr, S_IFBLK, rdev, &resfh); | |
1da177e4 LT |
636 | break; |
637 | ||
638 | case NF4CHR: | |
639 | rdev = MKDEV(create->cr_specdata1, create->cr_specdata2); | |
640 | if (MAJOR(rdev) != create->cr_specdata1 || | |
641 | MINOR(rdev) != create->cr_specdata2) | |
642 | return nfserr_inval; | |
ca364317 BF |
643 | status = nfsd_create(rqstp, &cstate->current_fh, |
644 | create->cr_name, create->cr_namelen, | |
645 | &create->cr_iattr,S_IFCHR, rdev, &resfh); | |
1da177e4 LT |
646 | break; |
647 | ||
648 | case NF4SOCK: | |
ca364317 BF |
649 | status = nfsd_create(rqstp, &cstate->current_fh, |
650 | create->cr_name, create->cr_namelen, | |
651 | &create->cr_iattr, S_IFSOCK, 0, &resfh); | |
1da177e4 LT |
652 | break; |
653 | ||
654 | case NF4FIFO: | |
ca364317 BF |
655 | status = nfsd_create(rqstp, &cstate->current_fh, |
656 | create->cr_name, create->cr_namelen, | |
657 | &create->cr_iattr, S_IFIFO, 0, &resfh); | |
1da177e4 LT |
658 | break; |
659 | ||
660 | case NF4DIR: | |
661 | create->cr_iattr.ia_valid &= ~ATTR_SIZE; | |
ca364317 BF |
662 | status = nfsd_create(rqstp, &cstate->current_fh, |
663 | create->cr_name, create->cr_namelen, | |
664 | &create->cr_iattr, S_IFDIR, 0, &resfh); | |
1da177e4 LT |
665 | break; |
666 | ||
667 | default: | |
668 | status = nfserr_badtype; | |
669 | } | |
670 | ||
9208faf2 YZ |
671 | if (status) |
672 | goto out; | |
1da177e4 | 673 | |
18032ca0 DQ |
674 | if (create->cr_label.len) |
675 | nfsd4_security_inode_setsecctx(&resfh, &create->cr_label, create->cr_bmval); | |
676 | ||
9208faf2 YZ |
677 | if (create->cr_acl != NULL) |
678 | do_set_nfs4_acl(rqstp, &resfh, create->cr_acl, | |
679 | create->cr_bmval); | |
680 | ||
681 | fh_unlock(&cstate->current_fh); | |
682 | set_change_info(&create->cr_cinfo, &cstate->current_fh); | |
683 | fh_dup2(&cstate->current_fh, &resfh); | |
684 | out: | |
1da177e4 LT |
685 | fh_put(&resfh); |
686 | return status; | |
687 | } | |
688 | ||
7191155b | 689 | static __be32 |
ca364317 BF |
690 | nfsd4_getattr(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
691 | struct nfsd4_getattr *getattr) | |
1da177e4 | 692 | { |
b37ad28b | 693 | __be32 status; |
1da177e4 | 694 | |
8837abca | 695 | status = fh_verify(rqstp, &cstate->current_fh, 0, NFSD_MAY_NOP); |
1da177e4 LT |
696 | if (status) |
697 | return status; | |
698 | ||
699 | if (getattr->ga_bmval[1] & NFSD_WRITEONLY_ATTRS_WORD1) | |
700 | return nfserr_inval; | |
701 | ||
7e705706 AA |
702 | getattr->ga_bmval[0] &= nfsd_suppattrs0(cstate->minorversion); |
703 | getattr->ga_bmval[1] &= nfsd_suppattrs1(cstate->minorversion); | |
704 | getattr->ga_bmval[2] &= nfsd_suppattrs2(cstate->minorversion); | |
1da177e4 | 705 | |
ca364317 | 706 | getattr->ga_fhp = &cstate->current_fh; |
1da177e4 LT |
707 | return nfs_ok; |
708 | } | |
709 | ||
7191155b | 710 | static __be32 |
ca364317 BF |
711 | nfsd4_link(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
712 | struct nfsd4_link *link) | |
1da177e4 | 713 | { |
b37ad28b | 714 | __be32 status = nfserr_nofilehandle; |
1da177e4 | 715 | |
ca364317 | 716 | if (!cstate->save_fh.fh_dentry) |
1da177e4 | 717 | return status; |
ca364317 BF |
718 | status = nfsd_link(rqstp, &cstate->current_fh, |
719 | link->li_name, link->li_namelen, &cstate->save_fh); | |
1da177e4 | 720 | if (!status) |
ca364317 | 721 | set_change_info(&link->li_cinfo, &cstate->current_fh); |
1da177e4 LT |
722 | return status; |
723 | } | |
724 | ||
0ff7ab46 | 725 | static __be32 nfsd4_do_lookupp(struct svc_rqst *rqstp, struct svc_fh *fh) |
1da177e4 LT |
726 | { |
727 | struct svc_fh tmp_fh; | |
b37ad28b | 728 | __be32 ret; |
1da177e4 LT |
729 | |
730 | fh_init(&tmp_fh, NFS4_FHSIZE); | |
df547efb BF |
731 | ret = exp_pseudoroot(rqstp, &tmp_fh); |
732 | if (ret) | |
1da177e4 | 733 | return ret; |
0ff7ab46 | 734 | if (tmp_fh.fh_dentry == fh->fh_dentry) { |
1da177e4 LT |
735 | fh_put(&tmp_fh); |
736 | return nfserr_noent; | |
737 | } | |
738 | fh_put(&tmp_fh); | |
0ff7ab46 BF |
739 | return nfsd_lookup(rqstp, fh, "..", 2, fh); |
740 | } | |
741 | ||
742 | static __be32 | |
743 | nfsd4_lookupp(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, | |
744 | void *arg) | |
745 | { | |
746 | return nfsd4_do_lookupp(rqstp, &cstate->current_fh); | |
1da177e4 LT |
747 | } |
748 | ||
7191155b | 749 | static __be32 |
ca364317 BF |
750 | nfsd4_lookup(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
751 | struct nfsd4_lookup *lookup) | |
1da177e4 | 752 | { |
ca364317 BF |
753 | return nfsd_lookup(rqstp, &cstate->current_fh, |
754 | lookup->lo_name, lookup->lo_len, | |
755 | &cstate->current_fh); | |
1da177e4 LT |
756 | } |
757 | ||
7191155b | 758 | static __be32 |
ca364317 BF |
759 | nfsd4_read(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
760 | struct nfsd4_read *read) | |
1da177e4 | 761 | { |
b37ad28b | 762 | __be32 status; |
1da177e4 LT |
763 | |
764 | /* no need to check permission - this will be done in nfsd_read() */ | |
765 | ||
7e06b7f9 | 766 | read->rd_filp = NULL; |
1da177e4 LT |
767 | if (read->rd_offset >= OFFSET_MAX) |
768 | return nfserr_inval; | |
769 | ||
9b3234b9 BF |
770 | /* |
771 | * If we do a zero copy read, then a client will see read data | |
772 | * that reflects the state of the file *after* performing the | |
773 | * following compound. | |
774 | * | |
775 | * To ensure proper ordering, we therefore turn off zero copy if | |
776 | * the client wants us to do more in this compound: | |
777 | */ | |
778 | if (!nfsd4_last_compound_op(rqstp)) | |
779 | rqstp->rq_splice_ok = false; | |
780 | ||
1da177e4 | 781 | /* check stateid */ |
5ccb0066 SK |
782 | if ((status = nfs4_preprocess_stateid_op(SVC_NET(rqstp), |
783 | cstate, &read->rd_stateid, | |
dd453dfd | 784 | RD_STATE, &read->rd_filp))) { |
1da177e4 LT |
785 | dprintk("NFSD: nfsd4_read: couldn't process stateid!\n"); |
786 | goto out; | |
787 | } | |
788 | status = nfs_ok; | |
789 | out: | |
1da177e4 | 790 | read->rd_rqstp = rqstp; |
ca364317 | 791 | read->rd_fhp = &cstate->current_fh; |
1da177e4 LT |
792 | return status; |
793 | } | |
794 | ||
7191155b | 795 | static __be32 |
ca364317 BF |
796 | nfsd4_readdir(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
797 | struct nfsd4_readdir *readdir) | |
1da177e4 LT |
798 | { |
799 | u64 cookie = readdir->rd_cookie; | |
800 | static const nfs4_verifier zeroverf; | |
801 | ||
802 | /* no need to check permission - this will be done in nfsd_readdir() */ | |
803 | ||
804 | if (readdir->rd_bmval[1] & NFSD_WRITEONLY_ATTRS_WORD1) | |
805 | return nfserr_inval; | |
806 | ||
7e705706 AA |
807 | readdir->rd_bmval[0] &= nfsd_suppattrs0(cstate->minorversion); |
808 | readdir->rd_bmval[1] &= nfsd_suppattrs1(cstate->minorversion); | |
809 | readdir->rd_bmval[2] &= nfsd_suppattrs2(cstate->minorversion); | |
1da177e4 | 810 | |
832023bf | 811 | if ((cookie == 1) || (cookie == 2) || |
1da177e4 LT |
812 | (cookie == 0 && memcmp(readdir->rd_verf.data, zeroverf.data, NFS4_VERIFIER_SIZE))) |
813 | return nfserr_bad_cookie; | |
814 | ||
815 | readdir->rd_rqstp = rqstp; | |
ca364317 | 816 | readdir->rd_fhp = &cstate->current_fh; |
1da177e4 LT |
817 | return nfs_ok; |
818 | } | |
819 | ||
7191155b | 820 | static __be32 |
ca364317 BF |
821 | nfsd4_readlink(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
822 | struct nfsd4_readlink *readlink) | |
1da177e4 LT |
823 | { |
824 | readlink->rl_rqstp = rqstp; | |
ca364317 | 825 | readlink->rl_fhp = &cstate->current_fh; |
1da177e4 LT |
826 | return nfs_ok; |
827 | } | |
828 | ||
7191155b | 829 | static __be32 |
ca364317 BF |
830 | nfsd4_remove(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
831 | struct nfsd4_remove *remove) | |
1da177e4 | 832 | { |
b37ad28b | 833 | __be32 status; |
1da177e4 | 834 | |
5ccb0066 | 835 | if (locks_in_grace(SVC_NET(rqstp))) |
c815afc7 | 836 | return nfserr_grace; |
ca364317 BF |
837 | status = nfsd_unlink(rqstp, &cstate->current_fh, 0, |
838 | remove->rm_name, remove->rm_namelen); | |
1da177e4 | 839 | if (!status) { |
ca364317 BF |
840 | fh_unlock(&cstate->current_fh); |
841 | set_change_info(&remove->rm_cinfo, &cstate->current_fh); | |
1da177e4 LT |
842 | } |
843 | return status; | |
844 | } | |
845 | ||
7191155b | 846 | static __be32 |
ca364317 BF |
847 | nfsd4_rename(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
848 | struct nfsd4_rename *rename) | |
1da177e4 | 849 | { |
b37ad28b | 850 | __be32 status = nfserr_nofilehandle; |
1da177e4 | 851 | |
ca364317 | 852 | if (!cstate->save_fh.fh_dentry) |
1da177e4 | 853 | return status; |
5ccb0066 SK |
854 | if (locks_in_grace(SVC_NET(rqstp)) && |
855 | !(cstate->save_fh.fh_export->ex_flags & NFSEXP_NOSUBTREECHECK)) | |
c815afc7 | 856 | return nfserr_grace; |
ca364317 BF |
857 | status = nfsd_rename(rqstp, &cstate->save_fh, rename->rn_sname, |
858 | rename->rn_snamelen, &cstate->current_fh, | |
1da177e4 | 859 | rename->rn_tname, rename->rn_tnamelen); |
2a6cf944 BF |
860 | if (status) |
861 | return status; | |
862 | set_change_info(&rename->rn_sinfo, &cstate->current_fh); | |
863 | set_change_info(&rename->rn_tinfo, &cstate->save_fh); | |
864 | return nfs_ok; | |
1da177e4 LT |
865 | } |
866 | ||
dcb488a3 AA |
867 | static __be32 |
868 | nfsd4_secinfo(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, | |
869 | struct nfsd4_secinfo *secinfo) | |
870 | { | |
871 | struct svc_fh resfh; | |
872 | struct svc_export *exp; | |
873 | struct dentry *dentry; | |
874 | __be32 err; | |
875 | ||
876 | fh_init(&resfh, NFS4_FHSIZE); | |
29a78a3e BF |
877 | err = fh_verify(rqstp, &cstate->current_fh, S_IFDIR, NFSD_MAY_EXEC); |
878 | if (err) | |
879 | return err; | |
dcb488a3 AA |
880 | err = nfsd_lookup_dentry(rqstp, &cstate->current_fh, |
881 | secinfo->si_name, secinfo->si_namelen, | |
882 | &exp, &dentry); | |
883 | if (err) | |
884 | return err; | |
885 | if (dentry->d_inode == NULL) { | |
886 | exp_put(exp); | |
887 | err = nfserr_noent; | |
888 | } else | |
889 | secinfo->si_exp = exp; | |
890 | dput(dentry); | |
56560b9a BF |
891 | if (cstate->minorversion) |
892 | /* See rfc 5661 section 2.6.3.1.1.8 */ | |
893 | fh_put(&cstate->current_fh); | |
dcb488a3 AA |
894 | return err; |
895 | } | |
896 | ||
04f4ad16 BF |
897 | static __be32 |
898 | nfsd4_secinfo_no_name(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, | |
899 | struct nfsd4_secinfo_no_name *sin) | |
900 | { | |
901 | __be32 err; | |
902 | ||
903 | switch (sin->sin_style) { | |
904 | case NFS4_SECINFO_STYLE4_CURRENT_FH: | |
905 | break; | |
906 | case NFS4_SECINFO_STYLE4_PARENT: | |
907 | err = nfsd4_do_lookupp(rqstp, &cstate->current_fh); | |
908 | if (err) | |
909 | return err; | |
910 | break; | |
911 | default: | |
912 | return nfserr_inval; | |
913 | } | |
bf18f163 KM |
914 | |
915 | sin->sin_exp = exp_get(cstate->current_fh.fh_export); | |
04f4ad16 BF |
916 | fh_put(&cstate->current_fh); |
917 | return nfs_ok; | |
918 | } | |
919 | ||
7191155b | 920 | static __be32 |
ca364317 BF |
921 | nfsd4_setattr(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
922 | struct nfsd4_setattr *setattr) | |
1da177e4 | 923 | { |
b37ad28b | 924 | __be32 status = nfs_ok; |
96f6f985 | 925 | int err; |
1da177e4 | 926 | |
1da177e4 | 927 | if (setattr->sa_iattr.ia_valid & ATTR_SIZE) { |
5ccb0066 | 928 | status = nfs4_preprocess_stateid_op(SVC_NET(rqstp), cstate, |
6150ef0d | 929 | &setattr->sa_stateid, WR_STATE, NULL); |
375c5547 | 930 | if (status) { |
3e3b4800 | 931 | dprintk("NFSD: nfsd4_setattr: couldn't process stateid!\n"); |
375c5547 BF |
932 | return status; |
933 | } | |
1da177e4 | 934 | } |
96f6f985 AV |
935 | err = fh_want_write(&cstate->current_fh); |
936 | if (err) | |
937 | return nfserrno(err); | |
1da177e4 | 938 | status = nfs_ok; |
3c8e0316 YZ |
939 | |
940 | status = check_attr_support(rqstp, cstate, setattr->sa_bmval, | |
941 | nfsd_attrmask); | |
942 | if (status) | |
943 | goto out; | |
944 | ||
1da177e4 | 945 | if (setattr->sa_acl != NULL) |
ca364317 BF |
946 | status = nfsd4_set_nfs4_acl(rqstp, &cstate->current_fh, |
947 | setattr->sa_acl); | |
1da177e4 | 948 | if (status) |
18f335af | 949 | goto out; |
18032ca0 DQ |
950 | if (setattr->sa_label.len) |
951 | status = nfsd4_set_nfs4_label(rqstp, &cstate->current_fh, | |
952 | &setattr->sa_label); | |
953 | if (status) | |
954 | goto out; | |
ca364317 | 955 | status = nfsd_setattr(rqstp, &cstate->current_fh, &setattr->sa_iattr, |
1da177e4 | 956 | 0, (time_t)0); |
18f335af | 957 | out: |
bad0dcff | 958 | fh_drop_write(&cstate->current_fh); |
1da177e4 LT |
959 | return status; |
960 | } | |
961 | ||
ffe1137b BF |
962 | static int fill_in_write_vector(struct kvec *vec, struct nfsd4_write *write) |
963 | { | |
964 | int i = 1; | |
965 | int buflen = write->wr_buflen; | |
966 | ||
967 | vec[0].iov_base = write->wr_head.iov_base; | |
968 | vec[0].iov_len = min_t(int, buflen, write->wr_head.iov_len); | |
969 | buflen -= vec[0].iov_len; | |
970 | ||
971 | while (buflen) { | |
972 | vec[i].iov_base = page_address(write->wr_pagelist[i - 1]); | |
973 | vec[i].iov_len = min_t(int, PAGE_SIZE, buflen); | |
974 | buflen -= vec[i].iov_len; | |
975 | i++; | |
976 | } | |
977 | return i; | |
978 | } | |
979 | ||
7191155b | 980 | static __be32 |
ca364317 BF |
981 | nfsd4_write(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
982 | struct nfsd4_write *write) | |
1da177e4 LT |
983 | { |
984 | stateid_t *stateid = &write->wr_stateid; | |
985 | struct file *filp = NULL; | |
b37ad28b | 986 | __be32 status = nfs_ok; |
31dec253 | 987 | unsigned long cnt; |
ffe1137b | 988 | int nvecs; |
1da177e4 LT |
989 | |
990 | /* no need to check permission - this will be done in nfsd_write() */ | |
991 | ||
992 | if (write->wr_offset >= OFFSET_MAX) | |
993 | return nfserr_inval; | |
994 | ||
5ccb0066 SK |
995 | status = nfs4_preprocess_stateid_op(SVC_NET(rqstp), |
996 | cstate, stateid, WR_STATE, &filp); | |
375c5547 BF |
997 | if (status) { |
998 | dprintk("NFSD: nfsd4_write: couldn't process stateid!\n"); | |
999 | return status; | |
1000 | } | |
1001 | ||
31dec253 | 1002 | cnt = write->wr_buflen; |
1da177e4 | 1003 | write->wr_how_written = write->wr_stable_how; |
b9c0ef85 | 1004 | gen_boot_verifier(&write->wr_verifier, SVC_NET(rqstp)); |
1da177e4 | 1005 | |
ffe1137b BF |
1006 | nvecs = fill_in_write_vector(rqstp->rq_vec, write); |
1007 | WARN_ON_ONCE(nvecs > ARRAY_SIZE(rqstp->rq_vec)); | |
1008 | ||
ca364317 | 1009 | status = nfsd_write(rqstp, &cstate->current_fh, filp, |
ffe1137b | 1010 | write->wr_offset, rqstp->rq_vec, nvecs, |
31dec253 | 1011 | &cnt, &write->wr_how_written); |
7e06b7f9 N |
1012 | if (filp) |
1013 | fput(filp); | |
1da177e4 | 1014 | |
31dec253 DS |
1015 | write->wr_bytes_written = cnt; |
1016 | ||
1da177e4 | 1017 | return status; |
1da177e4 LT |
1018 | } |
1019 | ||
1020 | /* This routine never returns NFS_OK! If there are no other errors, it | |
1021 | * will return NFSERR_SAME or NFSERR_NOT_SAME depending on whether the | |
1022 | * attributes matched. VERIFY is implemented by mapping NFSERR_SAME | |
1023 | * to NFS_OK after the call; NVERIFY by mapping NFSERR_NOT_SAME to NFS_OK. | |
1024 | */ | |
b37ad28b | 1025 | static __be32 |
c954e2a5 | 1026 | _nfsd4_verify(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
ca364317 | 1027 | struct nfsd4_verify *verify) |
1da177e4 | 1028 | { |
2ebbc012 | 1029 | __be32 *buf, *p; |
1da177e4 | 1030 | int count; |
b37ad28b | 1031 | __be32 status; |
1da177e4 | 1032 | |
8837abca | 1033 | status = fh_verify(rqstp, &cstate->current_fh, 0, NFSD_MAY_NOP); |
1da177e4 LT |
1034 | if (status) |
1035 | return status; | |
1036 | ||
3c8e0316 YZ |
1037 | status = check_attr_support(rqstp, cstate, verify->ve_bmval, NULL); |
1038 | if (status) | |
1039 | return status; | |
1040 | ||
1da177e4 LT |
1041 | if ((verify->ve_bmval[0] & FATTR4_WORD0_RDATTR_ERROR) |
1042 | || (verify->ve_bmval[1] & NFSD_WRITEONLY_ATTRS_WORD1)) | |
1043 | return nfserr_inval; | |
1044 | if (verify->ve_attrlen & 3) | |
1045 | return nfserr_inval; | |
1046 | ||
1047 | /* count in words: | |
1048 | * bitmap_len(1) + bitmap(2) + attr_len(1) = 4 | |
1049 | */ | |
1050 | count = 4 + (verify->ve_attrlen >> 2); | |
1051 | buf = kmalloc(count << 2, GFP_KERNEL); | |
1052 | if (!buf) | |
3e772463 | 1053 | return nfserr_jukebox; |
1da177e4 | 1054 | |
84822d0b | 1055 | p = buf; |
d5184658 | 1056 | status = nfsd4_encode_fattr_to_buf(&p, count, &cstate->current_fh, |
ca364317 | 1057 | cstate->current_fh.fh_export, |
d5184658 BF |
1058 | cstate->current_fh.fh_dentry, |
1059 | verify->ve_bmval, | |
406a7ea9 | 1060 | rqstp, 0); |
41ae6e71 BF |
1061 | /* |
1062 | * If nfsd4_encode_fattr() ran out of space, assume that's because | |
1063 | * the attributes are longer (hence different) than those given: | |
1064 | */ | |
84822d0b | 1065 | if (status == nfserr_resource) |
1da177e4 LT |
1066 | status = nfserr_not_same; |
1067 | if (status) | |
1068 | goto out_kfree; | |
1069 | ||
95ec28cd BH |
1070 | /* skip bitmap */ |
1071 | p = buf + 1 + ntohl(buf[0]); | |
1da177e4 LT |
1072 | status = nfserr_not_same; |
1073 | if (ntohl(*p++) != verify->ve_attrlen) | |
1074 | goto out_kfree; | |
1075 | if (!memcmp(p, verify->ve_attrval, verify->ve_attrlen)) | |
1076 | status = nfserr_same; | |
1077 | ||
1078 | out_kfree: | |
1079 | kfree(buf); | |
1080 | return status; | |
1081 | } | |
1082 | ||
c954e2a5 BF |
1083 | static __be32 |
1084 | nfsd4_nverify(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, | |
1085 | struct nfsd4_verify *verify) | |
1086 | { | |
1087 | __be32 status; | |
1088 | ||
1089 | status = _nfsd4_verify(rqstp, cstate, verify); | |
1090 | return status == nfserr_not_same ? nfs_ok : status; | |
1091 | } | |
1092 | ||
1093 | static __be32 | |
1094 | nfsd4_verify(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, | |
1095 | struct nfsd4_verify *verify) | |
1096 | { | |
1097 | __be32 status; | |
1098 | ||
1099 | status = _nfsd4_verify(rqstp, cstate, verify); | |
1100 | return status == nfserr_same ? nfs_ok : status; | |
1101 | } | |
1102 | ||
1da177e4 LT |
1103 | /* |
1104 | * NULL call. | |
1105 | */ | |
7111c66e | 1106 | static __be32 |
1da177e4 LT |
1107 | nfsd4_proc_null(struct svc_rqst *rqstp, void *argp, void *resp) |
1108 | { | |
1109 | return nfs_ok; | |
1110 | } | |
1111 | ||
e2b20950 SA |
1112 | static inline void nfsd4_increment_op_stats(u32 opnum) |
1113 | { | |
1114 | if (opnum >= FIRST_NFS4_OP && opnum <= LAST_NFS4_OP) | |
1115 | nfsdstats.nfs4_opcount[opnum]++; | |
1116 | } | |
1117 | ||
b591480b BF |
1118 | typedef __be32(*nfsd4op_func)(struct svc_rqst *, struct nfsd4_compound_state *, |
1119 | void *); | |
58e7b33a | 1120 | typedef u32(*nfsd4op_rsize)(struct svc_rqst *, struct nfsd4_op *op); |
8b70484c TM |
1121 | typedef void(*stateid_setter)(struct nfsd4_compound_state *, void *); |
1122 | typedef void(*stateid_getter)(struct nfsd4_compound_state *, void *); | |
58e7b33a | 1123 | |
f9bb94c4 AA |
1124 | enum nfsd4_op_flags { |
1125 | ALLOWED_WITHOUT_FH = 1 << 0, /* No current filehandle required */ | |
5ece3caf MJ |
1126 | ALLOWED_ON_ABSENT_FS = 1 << 1, /* ops processed on absent fs */ |
1127 | ALLOWED_AS_FIRST_OP = 1 << 2, /* ops reqired first in compound */ | |
68d93184 BF |
1128 | /* For rfc 5661 section 2.6.3.1.1: */ |
1129 | OP_HANDLES_WRONGSEC = 1 << 3, | |
1130 | OP_IS_PUTFH_LIKE = 1 << 4, | |
1091006c | 1131 | /* |
c856694e BF |
1132 | * These are the ops whose result size we estimate before |
1133 | * encoding, to avoid performing an op then not being able to | |
1134 | * respond or cache a response. This includes writes and setattrs | |
1135 | * as well as the operations usually called "nonidempotent": | |
1136 | */ | |
1137 | OP_MODIFIES_SOMETHING = 1 << 5, | |
1138 | /* | |
1139 | * Cache compounds containing these ops in the xid-based drc: | |
1091006c BF |
1140 | * We use the DRC for compounds containing non-idempotent |
1141 | * operations, *except* those that are 4.1-specific (since | |
1142 | * sessions provide their own EOS), and except for stateful | |
1143 | * operations other than setclientid and setclientid_confirm | |
1144 | * (since sequence numbers provide EOS for open, lock, etc in | |
1145 | * the v4.0 case). | |
1146 | */ | |
c856694e | 1147 | OP_CACHEME = 1 << 6, |
8b70484c TM |
1148 | /* |
1149 | * These are ops which clear current state id. | |
1150 | */ | |
1151 | OP_CLEAR_STATEID = 1 << 7, | |
c856694e BF |
1152 | }; |
1153 | ||
1154 | struct nfsd4_operation { | |
1155 | nfsd4op_func op_func; | |
1156 | u32 op_flags; | |
1157 | char *op_name; | |
58e7b33a MJ |
1158 | /* Try to get response size before operation */ |
1159 | nfsd4op_rsize op_rsize_bop; | |
24ff99c6 BS |
1160 | stateid_getter op_get_currentstateid; |
1161 | stateid_setter op_set_currentstateid; | |
b591480b BF |
1162 | }; |
1163 | ||
1164 | static struct nfsd4_operation nfsd4_ops[]; | |
1165 | ||
f1c7f79b | 1166 | static const char *nfsd4_op_name(unsigned opnum); |
b001a1b6 | 1167 | |
f9bb94c4 | 1168 | /* |
57716355 | 1169 | * Enforce NFSv4.1 COMPOUND ordering rules: |
f9bb94c4 | 1170 | * |
57716355 BF |
1171 | * Also note, enforced elsewhere: |
1172 | * - SEQUENCE other than as first op results in | |
1173 | * NFS4ERR_SEQUENCE_POS. (Enforced in nfsd4_sequence().) | |
1d1bc8f2 BF |
1174 | * - BIND_CONN_TO_SESSION must be the only op in its compound. |
1175 | * (Enforced in nfsd4_bind_conn_to_session().) | |
57716355 BF |
1176 | * - DESTROY_SESSION must be the final operation in a compound, if |
1177 | * sessionid's in SEQUENCE and DESTROY_SESSION are the same. | |
1178 | * (Enforced in nfsd4_destroy_session().) | |
f9bb94c4 | 1179 | */ |
57716355 | 1180 | static __be32 nfs41_check_op_ordering(struct nfsd4_compoundargs *args) |
f9bb94c4 | 1181 | { |
57716355 BF |
1182 | struct nfsd4_op *op = &args->ops[0]; |
1183 | ||
1184 | /* These ordering requirements don't apply to NFSv4.0: */ | |
1185 | if (args->minorversion == 0) | |
1186 | return nfs_ok; | |
1187 | /* This is weird, but OK, not our problem: */ | |
1188 | if (args->opcnt == 0) | |
1189 | return nfs_ok; | |
1190 | if (op->status == nfserr_op_illegal) | |
1191 | return nfs_ok; | |
1192 | if (!(nfsd4_ops[op->opnum].op_flags & ALLOWED_AS_FIRST_OP)) | |
1193 | return nfserr_op_not_in_session; | |
1194 | if (op->opnum == OP_SEQUENCE) | |
1195 | return nfs_ok; | |
1196 | if (args->opcnt != 1) | |
1197 | return nfserr_not_only_op; | |
1198 | return nfs_ok; | |
f9bb94c4 AA |
1199 | } |
1200 | ||
22b03214 BF |
1201 | static inline struct nfsd4_operation *OPDESC(struct nfsd4_op *op) |
1202 | { | |
1203 | return &nfsd4_ops[op->opnum]; | |
1204 | } | |
1205 | ||
1091006c BF |
1206 | bool nfsd4_cache_this_op(struct nfsd4_op *op) |
1207 | { | |
e372ba60 BF |
1208 | if (op->opnum == OP_ILLEGAL) |
1209 | return false; | |
c856694e | 1210 | return OPDESC(op)->op_flags & OP_CACHEME; |
1091006c BF |
1211 | } |
1212 | ||
68d93184 BF |
1213 | static bool need_wrongsec_check(struct svc_rqst *rqstp) |
1214 | { | |
1215 | struct nfsd4_compoundres *resp = rqstp->rq_resp; | |
1216 | struct nfsd4_compoundargs *argp = rqstp->rq_argp; | |
1217 | struct nfsd4_op *this = &argp->ops[resp->opcnt - 1]; | |
1218 | struct nfsd4_op *next = &argp->ops[resp->opcnt]; | |
1219 | struct nfsd4_operation *thisd; | |
1220 | struct nfsd4_operation *nextd; | |
1221 | ||
1222 | thisd = OPDESC(this); | |
1223 | /* | |
1224 | * Most ops check wronsec on our own; only the putfh-like ops | |
1225 | * have special rules. | |
1226 | */ | |
1227 | if (!(thisd->op_flags & OP_IS_PUTFH_LIKE)) | |
1228 | return false; | |
1229 | /* | |
1230 | * rfc 5661 2.6.3.1.1.6: don't bother erroring out a | |
1231 | * put-filehandle operation if we're not going to use the | |
1232 | * result: | |
1233 | */ | |
1234 | if (argp->opcnt == resp->opcnt) | |
1235 | return false; | |
1236 | ||
1237 | nextd = OPDESC(next); | |
1238 | /* | |
1239 | * Rest of 2.6.3.1.1: certain operations will return WRONGSEC | |
1240 | * errors themselves as necessary; others should check for them | |
1241 | * now: | |
1242 | */ | |
1243 | return !(nextd->op_flags & OP_HANDLES_WRONGSEC); | |
1244 | } | |
1245 | ||
2d124dfa BF |
1246 | static void svcxdr_init_encode(struct svc_rqst *rqstp, |
1247 | struct nfsd4_compoundres *resp) | |
1248 | { | |
1249 | struct xdr_stream *xdr = &resp->xdr; | |
1250 | struct xdr_buf *buf = &rqstp->rq_res; | |
1251 | struct kvec *head = buf->head; | |
1252 | ||
1253 | xdr->buf = buf; | |
ddd1ea56 | 1254 | xdr->iov = head; |
2d124dfa | 1255 | xdr->p = head->iov_base + head->iov_len; |
a5cddc88 | 1256 | xdr->end = head->iov_base + PAGE_SIZE - rqstp->rq_auth_slack; |
6ac90391 BF |
1257 | /* Tail and page_len should be zero at this point: */ |
1258 | buf->len = buf->head[0].iov_len; | |
2825a7f9 | 1259 | xdr->scratch.iov_len = 0; |
05638dc7 | 1260 | xdr->page_ptr = buf->pages - 1; |
2825a7f9 | 1261 | buf->buflen = PAGE_SIZE * (1 + rqstp->rq_page_end - buf->pages) |
a5cddc88 | 1262 | - rqstp->rq_auth_slack; |
2d124dfa BF |
1263 | } |
1264 | ||
1da177e4 LT |
1265 | /* |
1266 | * COMPOUND call. | |
1267 | */ | |
7111c66e | 1268 | static __be32 |
1da177e4 LT |
1269 | nfsd4_proc_compound(struct svc_rqst *rqstp, |
1270 | struct nfsd4_compoundargs *args, | |
1271 | struct nfsd4_compoundres *resp) | |
1272 | { | |
1273 | struct nfsd4_op *op; | |
b591480b | 1274 | struct nfsd4_operation *opdesc; |
e354d571 | 1275 | struct nfsd4_compound_state *cstate = &resp->cstate; |
4daeed25 KM |
1276 | struct svc_fh *current_fh = &cstate->current_fh; |
1277 | struct svc_fh *save_fh = &cstate->save_fh; | |
b37ad28b | 1278 | __be32 status; |
1da177e4 | 1279 | |
2d124dfa | 1280 | svcxdr_init_encode(rqstp, resp); |
4aea24b2 | 1281 | resp->tagp = resp->xdr.p; |
1da177e4 | 1282 | /* reserve space for: taglen, tag, and opcnt */ |
d3f627c8 | 1283 | xdr_reserve_space(&resp->xdr, 8 + args->taglen); |
1da177e4 LT |
1284 | resp->taglen = args->taglen; |
1285 | resp->tag = args->tag; | |
1da177e4 | 1286 | resp->rqstp = rqstp; |
4daeed25 | 1287 | cstate->minorversion = args->minorversion; |
4daeed25 KM |
1288 | fh_init(current_fh, NFS4_FHSIZE); |
1289 | fh_init(save_fh, NFS4_FHSIZE); | |
8ff30fa4 N |
1290 | /* |
1291 | * Don't use the deferral mechanism for NFSv4; compounds make it | |
1292 | * too hard to avoid non-idempotency problems. | |
1293 | */ | |
f15a5cf9 | 1294 | rqstp->rq_usedeferral = false; |
1da177e4 LT |
1295 | |
1296 | /* | |
1297 | * According to RFC3010, this takes precedence over all other errors. | |
1298 | */ | |
1299 | status = nfserr_minor_vers_mismatch; | |
35f7a14f | 1300 | if (nfsd_minorversion(args->minorversion, NFSD_TEST) <= 0) |
1da177e4 LT |
1301 | goto out; |
1302 | ||
57716355 BF |
1303 | status = nfs41_check_op_ordering(args); |
1304 | if (status) { | |
f9bb94c4 | 1305 | op = &args->ops[0]; |
57716355 | 1306 | op->status = status; |
f9bb94c4 AA |
1307 | goto encode_op; |
1308 | } | |
1309 | ||
1da177e4 LT |
1310 | while (!status && resp->opcnt < args->opcnt) { |
1311 | op = &args->ops[resp->opcnt++]; | |
1312 | ||
b001a1b6 BH |
1313 | dprintk("nfsv4 compound op #%d/%d: %d (%s)\n", |
1314 | resp->opcnt, args->opcnt, op->opnum, | |
1315 | nfsd4_op_name(op->opnum)); | |
1da177e4 LT |
1316 | /* |
1317 | * The XDR decode routines may have pre-set op->status; | |
1318 | * for example, if there is a miscellaneous XDR error | |
1319 | * it will be set to nfserr_bad_xdr. | |
1320 | */ | |
9d313b17 BF |
1321 | if (op->status) { |
1322 | if (op->opnum == OP_OPEN) | |
1323 | op->status = nfsd4_open_omfg(rqstp, cstate, op); | |
1da177e4 | 1324 | goto encode_op; |
9d313b17 | 1325 | } |
1da177e4 | 1326 | |
22b03214 | 1327 | opdesc = OPDESC(op); |
b591480b | 1328 | |
4daeed25 | 1329 | if (!current_fh->fh_dentry) { |
27d630ec | 1330 | if (!(opdesc->op_flags & ALLOWED_WITHOUT_FH)) { |
42ca0993 BF |
1331 | op->status = nfserr_nofilehandle; |
1332 | goto encode_op; | |
1333 | } | |
4daeed25 | 1334 | } else if (current_fh->fh_export->ex_fslocs.migrated && |
eeac294e | 1335 | !(opdesc->op_flags & ALLOWED_ON_ABSENT_FS)) { |
42ca0993 | 1336 | op->status = nfserr_moved; |
1da177e4 LT |
1337 | goto encode_op; |
1338 | } | |
b591480b | 1339 | |
2336745e KM |
1340 | fh_clear_wcc(current_fh); |
1341 | ||
58e7b33a MJ |
1342 | /* If op is non-idempotent */ |
1343 | if (opdesc->op_flags & OP_MODIFIES_SOMETHING) { | |
4c69d585 | 1344 | /* |
a8095f7e BF |
1345 | * Don't execute this op if we couldn't encode a |
1346 | * succesful reply: | |
1347 | */ | |
1348 | u32 plen = opdesc->op_rsize_bop(rqstp, op); | |
1349 | /* | |
1350 | * Plus if there's another operation, make sure | |
4c69d585 BF |
1351 | * we'll have space to at least encode an error: |
1352 | */ | |
1353 | if (resp->opcnt < args->opcnt) | |
1354 | plen += COMPOUND_ERR_SLACK_SPACE; | |
58e7b33a MJ |
1355 | op->status = nfsd4_check_resp_size(resp, plen); |
1356 | } | |
1357 | ||
1358 | if (op->status) | |
1359 | goto encode_op; | |
1360 | ||
b600de7a BF |
1361 | if (opdesc->op_get_currentstateid) |
1362 | opdesc->op_get_currentstateid(cstate, &op->u); | |
1363 | op->status = opdesc->op_func(rqstp, cstate, &op->u); | |
1da177e4 | 1364 | |
8b70484c TM |
1365 | if (!op->status) { |
1366 | if (opdesc->op_set_currentstateid) | |
1367 | opdesc->op_set_currentstateid(cstate, &op->u); | |
1368 | ||
1369 | if (opdesc->op_flags & OP_CLEAR_STATEID) | |
37c593c5 | 1370 | clear_current_stateid(cstate); |
8b70484c TM |
1371 | |
1372 | if (need_wrongsec_check(rqstp)) | |
4daeed25 | 1373 | op->status = check_nfsd_access(current_fh->fh_export, rqstp); |
8b70484c | 1374 | } |
68d93184 | 1375 | |
1da177e4 | 1376 | encode_op: |
49557cc7 | 1377 | /* Only from SEQUENCE */ |
4daeed25 | 1378 | if (cstate->status == nfserr_replay_cache) { |
da3846a2 | 1379 | dprintk("%s NFS4.1 replay from cache\n", __func__); |
abfabf8c | 1380 | status = op->status; |
da3846a2 AA |
1381 | goto out; |
1382 | } | |
a90b061c | 1383 | if (op->status == nfserr_replay_me) { |
a4f1706a | 1384 | op->replay = &cstate->replay_owner->so_replay; |
d0a381dd | 1385 | nfsd4_encode_replay(&resp->xdr, op); |
1da177e4 LT |
1386 | status = op->status = op->replay->rp_status; |
1387 | } else { | |
1388 | nfsd4_encode_operation(resp, op); | |
1389 | status = op->status; | |
1390 | } | |
0407717d BH |
1391 | |
1392 | dprintk("nfsv4 compound op %p opcnt %d #%d: %d: status %d\n", | |
1393 | args->ops, args->opcnt, resp->opcnt, op->opnum, | |
1394 | be32_to_cpu(status)); | |
1395 | ||
a4f1706a | 1396 | if (cstate->replay_owner) { |
5ec094c1 | 1397 | nfs4_unlock_state(); |
a4f1706a | 1398 | cstate->replay_owner = NULL; |
1da177e4 | 1399 | } |
7e06b7f9 N |
1400 | /* XXX Ugh, we need to get rid of this kind of special case: */ |
1401 | if (op->opnum == OP_READ && op->u.read.rd_filp) | |
1402 | fput(op->u.read.rd_filp); | |
e2b20950 SA |
1403 | |
1404 | nfsd4_increment_op_stats(op->opnum); | |
1da177e4 LT |
1405 | } |
1406 | ||
4daeed25 KM |
1407 | cstate->status = status; |
1408 | fh_put(current_fh); | |
1409 | fh_put(save_fh); | |
1410 | BUG_ON(cstate->replay_owner); | |
1da177e4 | 1411 | out: |
2f425878 | 1412 | /* Reset deferral mechanism for RPC deferrals */ |
f15a5cf9 | 1413 | rqstp->rq_usedeferral = true; |
3b12cd98 | 1414 | dprintk("nfsv4 compound returned %d\n", ntohl(status)); |
1da177e4 LT |
1415 | return status; |
1416 | } | |
1417 | ||
58e7b33a MJ |
1418 | #define op_encode_hdr_size (2) |
1419 | #define op_encode_stateid_maxsz (XDR_QUADLEN(NFS4_STATEID_SIZE)) | |
1420 | #define op_encode_verifier_maxsz (XDR_QUADLEN(NFS4_VERIFIER_SIZE)) | |
1421 | #define op_encode_change_info_maxsz (5) | |
1422 | #define nfs4_fattr_bitmap_maxsz (4) | |
1423 | ||
8c7424cf BF |
1424 | /* We'll fall back on returning no lockowner if run out of space: */ |
1425 | #define op_encode_lockowner_maxsz (0) | |
58e7b33a MJ |
1426 | #define op_encode_lock_denied_maxsz (8 + op_encode_lockowner_maxsz) |
1427 | ||
1428 | #define nfs4_owner_maxsz (1 + XDR_QUADLEN(IDMAP_NAMESZ)) | |
1429 | ||
1430 | #define op_encode_ace_maxsz (3 + nfs4_owner_maxsz) | |
1431 | #define op_encode_delegation_maxsz (1 + op_encode_stateid_maxsz + 1 + \ | |
1432 | op_encode_ace_maxsz) | |
1433 | ||
1434 | #define op_encode_channel_attrs_maxsz (6 + 1 + 1) | |
1435 | ||
1436 | static inline u32 nfsd4_only_status_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op) | |
1437 | { | |
1438 | return (op_encode_hdr_size) * sizeof(__be32); | |
1439 | } | |
1440 | ||
1441 | static inline u32 nfsd4_status_stateid_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op) | |
1442 | { | |
1443 | return (op_encode_hdr_size + op_encode_stateid_maxsz)* sizeof(__be32); | |
1444 | } | |
1445 | ||
1446 | static inline u32 nfsd4_commit_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op) | |
1447 | { | |
1448 | return (op_encode_hdr_size + op_encode_verifier_maxsz) * sizeof(__be32); | |
1449 | } | |
1450 | ||
1451 | static inline u32 nfsd4_create_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op) | |
1452 | { | |
1453 | return (op_encode_hdr_size + op_encode_change_info_maxsz | |
1454 | + nfs4_fattr_bitmap_maxsz) * sizeof(__be32); | |
1455 | } | |
1456 | ||
b86cef60 BF |
1457 | /* |
1458 | * Note since this is an idempotent operation we won't insist on failing | |
1459 | * the op prematurely if the estimate is too large. We may turn off splice | |
1460 | * reads unnecessarily. | |
1461 | */ | |
1462 | static inline u32 nfsd4_getattr_rsize(struct svc_rqst *rqstp, | |
1463 | struct nfsd4_op *op) | |
1464 | { | |
1465 | u32 *bmap = op->u.getattr.ga_bmval; | |
1466 | u32 bmap0 = bmap[0], bmap1 = bmap[1], bmap2 = bmap[2]; | |
1467 | u32 ret = 0; | |
1468 | ||
1469 | if (bmap0 & FATTR4_WORD0_ACL) | |
1470 | return svc_max_payload(rqstp); | |
1471 | if (bmap0 & FATTR4_WORD0_FS_LOCATIONS) | |
1472 | return svc_max_payload(rqstp); | |
1473 | ||
1474 | if (bmap1 & FATTR4_WORD1_OWNER) { | |
1475 | ret += IDMAP_NAMESZ + 4; | |
1476 | bmap1 &= ~FATTR4_WORD1_OWNER; | |
1477 | } | |
1478 | if (bmap1 & FATTR4_WORD1_OWNER_GROUP) { | |
1479 | ret += IDMAP_NAMESZ + 4; | |
1480 | bmap1 &= ~FATTR4_WORD1_OWNER_GROUP; | |
1481 | } | |
1482 | if (bmap0 & FATTR4_WORD0_FILEHANDLE) { | |
1483 | ret += NFS4_FHSIZE + 4; | |
1484 | bmap0 &= ~FATTR4_WORD0_FILEHANDLE; | |
1485 | } | |
1486 | if (bmap2 & FATTR4_WORD2_SECURITY_LABEL) { | |
1487 | ret += NFSD4_MAX_SEC_LABEL_LEN + 12; | |
1488 | bmap2 &= ~FATTR4_WORD2_SECURITY_LABEL; | |
1489 | } | |
1490 | /* | |
1491 | * Largest of remaining attributes are 16 bytes (e.g., | |
1492 | * supported_attributes) | |
1493 | */ | |
1494 | ret += 16 * (hweight32(bmap0) + hweight32(bmap1) + hweight32(bmap2)); | |
1495 | /* bitmask, length */ | |
1496 | ret += 20; | |
1497 | return ret; | |
1498 | } | |
1499 | ||
58e7b33a MJ |
1500 | static inline u32 nfsd4_link_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op) |
1501 | { | |
1502 | return (op_encode_hdr_size + op_encode_change_info_maxsz) | |
1503 | * sizeof(__be32); | |
1504 | } | |
1505 | ||
1506 | static inline u32 nfsd4_lock_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op) | |
1507 | { | |
1508 | return (op_encode_hdr_size + op_encode_lock_denied_maxsz) | |
1509 | * sizeof(__be32); | |
1510 | } | |
1511 | ||
1512 | static inline u32 nfsd4_open_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op) | |
1513 | { | |
1514 | return (op_encode_hdr_size + op_encode_stateid_maxsz | |
1515 | + op_encode_change_info_maxsz + 1 | |
1516 | + nfs4_fattr_bitmap_maxsz | |
1517 | + op_encode_delegation_maxsz) * sizeof(__be32); | |
1518 | } | |
1519 | ||
1520 | static inline u32 nfsd4_read_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op) | |
1521 | { | |
1522 | u32 maxcount = 0, rlen = 0; | |
1523 | ||
1524 | maxcount = svc_max_payload(rqstp); | |
3c7aa15d | 1525 | rlen = min(op->u.read.rd_length, maxcount); |
58e7b33a | 1526 | |
622f560e | 1527 | return (op_encode_hdr_size + 2 + XDR_QUADLEN(rlen)) * sizeof(__be32); |
58e7b33a MJ |
1528 | } |
1529 | ||
1530 | static inline u32 nfsd4_readdir_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op) | |
1531 | { | |
3c7aa15d | 1532 | u32 maxcount = 0, rlen = 0; |
58e7b33a | 1533 | |
3c7aa15d KM |
1534 | maxcount = svc_max_payload(rqstp); |
1535 | rlen = min(op->u.readdir.rd_maxcount, maxcount); | |
58e7b33a | 1536 | |
561f0ed4 BF |
1537 | return (op_encode_hdr_size + op_encode_verifier_maxsz + |
1538 | XDR_QUADLEN(rlen)) * sizeof(__be32); | |
58e7b33a MJ |
1539 | } |
1540 | ||
1541 | static inline u32 nfsd4_remove_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op) | |
1542 | { | |
1543 | return (op_encode_hdr_size + op_encode_change_info_maxsz) | |
1544 | * sizeof(__be32); | |
1545 | } | |
1546 | ||
1547 | static inline u32 nfsd4_rename_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op) | |
1548 | { | |
1549 | return (op_encode_hdr_size + op_encode_change_info_maxsz | |
1550 | + op_encode_change_info_maxsz) * sizeof(__be32); | |
1551 | } | |
1552 | ||
ccae70a9 BF |
1553 | static inline u32 nfsd4_sequence_rsize(struct svc_rqst *rqstp, |
1554 | struct nfsd4_op *op) | |
1555 | { | |
1556 | return NFS4_MAX_SESSIONID_LEN + 20; | |
1557 | } | |
1558 | ||
58e7b33a MJ |
1559 | static inline u32 nfsd4_setattr_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op) |
1560 | { | |
1561 | return (op_encode_hdr_size + nfs4_fattr_bitmap_maxsz) * sizeof(__be32); | |
1562 | } | |
1563 | ||
1564 | static inline u32 nfsd4_setclientid_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op) | |
1565 | { | |
480efaee BF |
1566 | return (op_encode_hdr_size + 2 + XDR_QUADLEN(NFS4_VERIFIER_SIZE)) * |
1567 | sizeof(__be32); | |
58e7b33a MJ |
1568 | } |
1569 | ||
1570 | static inline u32 nfsd4_write_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op) | |
1571 | { | |
f34e432b | 1572 | return (op_encode_hdr_size + 2 + op_encode_verifier_maxsz) * sizeof(__be32); |
58e7b33a MJ |
1573 | } |
1574 | ||
1575 | static inline u32 nfsd4_exchange_id_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op) | |
1576 | { | |
1577 | return (op_encode_hdr_size + 2 + 1 + /* eir_clientid, eir_sequenceid */\ | |
a8bb84bc KM |
1578 | 1 + 1 + /* eir_flags, spr_how */\ |
1579 | 4 + /* spo_must_enforce & _allow with bitmap */\ | |
58e7b33a MJ |
1580 | 2 + /*eir_server_owner.so_minor_id */\ |
1581 | /* eir_server_owner.so_major_id<> */\ | |
1582 | XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + 1 +\ | |
1583 | /* eir_server_scope<> */\ | |
1584 | XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + 1 +\ | |
1585 | 1 + /* eir_server_impl_id array length */\ | |
1586 | 0 /* ignored eir_server_impl_id contents */) * sizeof(__be32); | |
1587 | } | |
1588 | ||
1589 | static inline u32 nfsd4_bind_conn_to_session_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op) | |
1590 | { | |
1591 | return (op_encode_hdr_size + \ | |
1592 | XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + /* bctsr_sessid */\ | |
1593 | 2 /* bctsr_dir, use_conn_in_rdma_mode */) * sizeof(__be32); | |
1594 | } | |
1595 | ||
1596 | static inline u32 nfsd4_create_session_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op) | |
1597 | { | |
1598 | return (op_encode_hdr_size + \ | |
1599 | XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + /* sessionid */\ | |
1600 | 2 + /* csr_sequence, csr_flags */\ | |
1601 | op_encode_channel_attrs_maxsz + \ | |
1602 | op_encode_channel_attrs_maxsz) * sizeof(__be32); | |
1603 | } | |
1604 | ||
20766016 | 1605 | static struct nfsd4_operation nfsd4_ops[] = { |
b591480b BF |
1606 | [OP_ACCESS] = { |
1607 | .op_func = (nfsd4op_func)nfsd4_access, | |
b001a1b6 | 1608 | .op_name = "OP_ACCESS", |
b591480b BF |
1609 | }, |
1610 | [OP_CLOSE] = { | |
1611 | .op_func = (nfsd4op_func)nfsd4_close, | |
58e7b33a | 1612 | .op_flags = OP_MODIFIES_SOMETHING, |
b001a1b6 | 1613 | .op_name = "OP_CLOSE", |
58e7b33a | 1614 | .op_rsize_bop = (nfsd4op_rsize)nfsd4_status_stateid_rsize, |
8b70484c TM |
1615 | .op_get_currentstateid = (stateid_getter)nfsd4_get_closestateid, |
1616 | .op_set_currentstateid = (stateid_setter)nfsd4_set_closestateid, | |
b591480b BF |
1617 | }, |
1618 | [OP_COMMIT] = { | |
1619 | .op_func = (nfsd4op_func)nfsd4_commit, | |
58e7b33a | 1620 | .op_flags = OP_MODIFIES_SOMETHING, |
b001a1b6 | 1621 | .op_name = "OP_COMMIT", |
58e7b33a | 1622 | .op_rsize_bop = (nfsd4op_rsize)nfsd4_commit_rsize, |
b591480b BF |
1623 | }, |
1624 | [OP_CREATE] = { | |
1625 | .op_func = (nfsd4op_func)nfsd4_create, | |
d1471053 | 1626 | .op_flags = OP_MODIFIES_SOMETHING | OP_CACHEME | OP_CLEAR_STATEID, |
b001a1b6 | 1627 | .op_name = "OP_CREATE", |
58e7b33a | 1628 | .op_rsize_bop = (nfsd4op_rsize)nfsd4_create_rsize, |
b591480b BF |
1629 | }, |
1630 | [OP_DELEGRETURN] = { | |
1631 | .op_func = (nfsd4op_func)nfsd4_delegreturn, | |
58e7b33a | 1632 | .op_flags = OP_MODIFIES_SOMETHING, |
b001a1b6 | 1633 | .op_name = "OP_DELEGRETURN", |
58e7b33a | 1634 | .op_rsize_bop = nfsd4_only_status_rsize, |
9428fe1a | 1635 | .op_get_currentstateid = (stateid_getter)nfsd4_get_delegreturnstateid, |
b591480b BF |
1636 | }, |
1637 | [OP_GETATTR] = { | |
1638 | .op_func = (nfsd4op_func)nfsd4_getattr, | |
eeac294e | 1639 | .op_flags = ALLOWED_ON_ABSENT_FS, |
b86cef60 | 1640 | .op_rsize_bop = nfsd4_getattr_rsize, |
b001a1b6 | 1641 | .op_name = "OP_GETATTR", |
b591480b BF |
1642 | }, |
1643 | [OP_GETFH] = { | |
1644 | .op_func = (nfsd4op_func)nfsd4_getfh, | |
b001a1b6 | 1645 | .op_name = "OP_GETFH", |
b591480b BF |
1646 | }, |
1647 | [OP_LINK] = { | |
1648 | .op_func = (nfsd4op_func)nfsd4_link, | |
c856694e BF |
1649 | .op_flags = ALLOWED_ON_ABSENT_FS | OP_MODIFIES_SOMETHING |
1650 | | OP_CACHEME, | |
b001a1b6 | 1651 | .op_name = "OP_LINK", |
58e7b33a | 1652 | .op_rsize_bop = (nfsd4op_rsize)nfsd4_link_rsize, |
b591480b BF |
1653 | }, |
1654 | [OP_LOCK] = { | |
1655 | .op_func = (nfsd4op_func)nfsd4_lock, | |
58e7b33a | 1656 | .op_flags = OP_MODIFIES_SOMETHING, |
b001a1b6 | 1657 | .op_name = "OP_LOCK", |
58e7b33a | 1658 | .op_rsize_bop = (nfsd4op_rsize)nfsd4_lock_rsize, |
62cd4a59 | 1659 | .op_set_currentstateid = (stateid_setter)nfsd4_set_lockstateid, |
b591480b BF |
1660 | }, |
1661 | [OP_LOCKT] = { | |
1662 | .op_func = (nfsd4op_func)nfsd4_lockt, | |
b001a1b6 | 1663 | .op_name = "OP_LOCKT", |
b591480b BF |
1664 | }, |
1665 | [OP_LOCKU] = { | |
1666 | .op_func = (nfsd4op_func)nfsd4_locku, | |
58e7b33a | 1667 | .op_flags = OP_MODIFIES_SOMETHING, |
b001a1b6 | 1668 | .op_name = "OP_LOCKU", |
58e7b33a | 1669 | .op_rsize_bop = (nfsd4op_rsize)nfsd4_status_stateid_rsize, |
62cd4a59 | 1670 | .op_get_currentstateid = (stateid_getter)nfsd4_get_lockustateid, |
b591480b BF |
1671 | }, |
1672 | [OP_LOOKUP] = { | |
1673 | .op_func = (nfsd4op_func)nfsd4_lookup, | |
d1471053 | 1674 | .op_flags = OP_HANDLES_WRONGSEC | OP_CLEAR_STATEID, |
b001a1b6 | 1675 | .op_name = "OP_LOOKUP", |
b591480b BF |
1676 | }, |
1677 | [OP_LOOKUPP] = { | |
1678 | .op_func = (nfsd4op_func)nfsd4_lookupp, | |
d1471053 | 1679 | .op_flags = OP_HANDLES_WRONGSEC | OP_CLEAR_STATEID, |
b001a1b6 | 1680 | .op_name = "OP_LOOKUPP", |
b591480b BF |
1681 | }, |
1682 | [OP_NVERIFY] = { | |
1683 | .op_func = (nfsd4op_func)nfsd4_nverify, | |
b001a1b6 | 1684 | .op_name = "OP_NVERIFY", |
b591480b BF |
1685 | }, |
1686 | [OP_OPEN] = { | |
1687 | .op_func = (nfsd4op_func)nfsd4_open, | |
58e7b33a | 1688 | .op_flags = OP_HANDLES_WRONGSEC | OP_MODIFIES_SOMETHING, |
b001a1b6 | 1689 | .op_name = "OP_OPEN", |
58e7b33a | 1690 | .op_rsize_bop = (nfsd4op_rsize)nfsd4_open_rsize, |
8b70484c | 1691 | .op_set_currentstateid = (stateid_setter)nfsd4_set_openstateid, |
b591480b BF |
1692 | }, |
1693 | [OP_OPEN_CONFIRM] = { | |
1694 | .op_func = (nfsd4op_func)nfsd4_open_confirm, | |
58e7b33a | 1695 | .op_flags = OP_MODIFIES_SOMETHING, |
b001a1b6 | 1696 | .op_name = "OP_OPEN_CONFIRM", |
58e7b33a | 1697 | .op_rsize_bop = (nfsd4op_rsize)nfsd4_status_stateid_rsize, |
b591480b BF |
1698 | }, |
1699 | [OP_OPEN_DOWNGRADE] = { | |
1700 | .op_func = (nfsd4op_func)nfsd4_open_downgrade, | |
58e7b33a | 1701 | .op_flags = OP_MODIFIES_SOMETHING, |
b001a1b6 | 1702 | .op_name = "OP_OPEN_DOWNGRADE", |
58e7b33a | 1703 | .op_rsize_bop = (nfsd4op_rsize)nfsd4_status_stateid_rsize, |
9428fe1a TM |
1704 | .op_get_currentstateid = (stateid_getter)nfsd4_get_opendowngradestateid, |
1705 | .op_set_currentstateid = (stateid_setter)nfsd4_set_opendowngradestateid, | |
b591480b BF |
1706 | }, |
1707 | [OP_PUTFH] = { | |
1708 | .op_func = (nfsd4op_func)nfsd4_putfh, | |
68d93184 | 1709 | .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS |
5b648699 | 1710 | | OP_IS_PUTFH_LIKE | OP_CLEAR_STATEID, |
b001a1b6 | 1711 | .op_name = "OP_PUTFH", |
58e7b33a | 1712 | .op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize, |
b591480b | 1713 | }, |
eeac294e | 1714 | [OP_PUTPUBFH] = { |
a1c8c4d1 | 1715 | .op_func = (nfsd4op_func)nfsd4_putrootfh, |
68d93184 | 1716 | .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS |
5b648699 | 1717 | | OP_IS_PUTFH_LIKE | OP_CLEAR_STATEID, |
b001a1b6 | 1718 | .op_name = "OP_PUTPUBFH", |
58e7b33a | 1719 | .op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize, |
eeac294e | 1720 | }, |
b591480b BF |
1721 | [OP_PUTROOTFH] = { |
1722 | .op_func = (nfsd4op_func)nfsd4_putrootfh, | |
68d93184 | 1723 | .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS |
5b648699 | 1724 | | OP_IS_PUTFH_LIKE | OP_CLEAR_STATEID, |
b001a1b6 | 1725 | .op_name = "OP_PUTROOTFH", |
58e7b33a | 1726 | .op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize, |
b591480b BF |
1727 | }, |
1728 | [OP_READ] = { | |
1729 | .op_func = (nfsd4op_func)nfsd4_read, | |
b001a1b6 | 1730 | .op_name = "OP_READ", |
58e7b33a | 1731 | .op_rsize_bop = (nfsd4op_rsize)nfsd4_read_rsize, |
30813e27 | 1732 | .op_get_currentstateid = (stateid_getter)nfsd4_get_readstateid, |
b591480b BF |
1733 | }, |
1734 | [OP_READDIR] = { | |
1735 | .op_func = (nfsd4op_func)nfsd4_readdir, | |
b001a1b6 | 1736 | .op_name = "OP_READDIR", |
58e7b33a | 1737 | .op_rsize_bop = (nfsd4op_rsize)nfsd4_readdir_rsize, |
b591480b BF |
1738 | }, |
1739 | [OP_READLINK] = { | |
1740 | .op_func = (nfsd4op_func)nfsd4_readlink, | |
b001a1b6 | 1741 | .op_name = "OP_READLINK", |
b591480b BF |
1742 | }, |
1743 | [OP_REMOVE] = { | |
1744 | .op_func = (nfsd4op_func)nfsd4_remove, | |
c856694e | 1745 | .op_flags = OP_MODIFIES_SOMETHING | OP_CACHEME, |
b001a1b6 | 1746 | .op_name = "OP_REMOVE", |
58e7b33a | 1747 | .op_rsize_bop = (nfsd4op_rsize)nfsd4_remove_rsize, |
b591480b BF |
1748 | }, |
1749 | [OP_RENAME] = { | |
1750 | .op_func = (nfsd4op_func)nfsd4_rename, | |
c856694e | 1751 | .op_flags = OP_MODIFIES_SOMETHING | OP_CACHEME, |
58e7b33a | 1752 | .op_name = "OP_RENAME", |
58e7b33a | 1753 | .op_rsize_bop = (nfsd4op_rsize)nfsd4_rename_rsize, |
b591480b BF |
1754 | }, |
1755 | [OP_RENEW] = { | |
1756 | .op_func = (nfsd4op_func)nfsd4_renew, | |
58e7b33a MJ |
1757 | .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS |
1758 | | OP_MODIFIES_SOMETHING, | |
b001a1b6 | 1759 | .op_name = "OP_RENEW", |
58e7b33a MJ |
1760 | .op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize, |
1761 | ||
b591480b BF |
1762 | }, |
1763 | [OP_RESTOREFH] = { | |
1764 | .op_func = (nfsd4op_func)nfsd4_restorefh, | |
68d93184 | 1765 | .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS |
58e7b33a | 1766 | | OP_IS_PUTFH_LIKE | OP_MODIFIES_SOMETHING, |
b001a1b6 | 1767 | .op_name = "OP_RESTOREFH", |
58e7b33a | 1768 | .op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize, |
b591480b BF |
1769 | }, |
1770 | [OP_SAVEFH] = { | |
1771 | .op_func = (nfsd4op_func)nfsd4_savefh, | |
58e7b33a | 1772 | .op_flags = OP_HANDLES_WRONGSEC | OP_MODIFIES_SOMETHING, |
b001a1b6 | 1773 | .op_name = "OP_SAVEFH", |
58e7b33a | 1774 | .op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize, |
b591480b | 1775 | }, |
dcb488a3 AA |
1776 | [OP_SECINFO] = { |
1777 | .op_func = (nfsd4op_func)nfsd4_secinfo, | |
68d93184 | 1778 | .op_flags = OP_HANDLES_WRONGSEC, |
b001a1b6 | 1779 | .op_name = "OP_SECINFO", |
dcb488a3 | 1780 | }, |
b591480b BF |
1781 | [OP_SETATTR] = { |
1782 | .op_func = (nfsd4op_func)nfsd4_setattr, | |
b001a1b6 | 1783 | .op_name = "OP_SETATTR", |
c856694e | 1784 | .op_flags = OP_MODIFIES_SOMETHING | OP_CACHEME, |
58e7b33a | 1785 | .op_rsize_bop = (nfsd4op_rsize)nfsd4_setattr_rsize, |
1e97b519 | 1786 | .op_get_currentstateid = (stateid_getter)nfsd4_get_setattrstateid, |
b591480b BF |
1787 | }, |
1788 | [OP_SETCLIENTID] = { | |
1789 | .op_func = (nfsd4op_func)nfsd4_setclientid, | |
58e7b33a | 1790 | .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS |
c856694e | 1791 | | OP_MODIFIES_SOMETHING | OP_CACHEME, |
b001a1b6 | 1792 | .op_name = "OP_SETCLIENTID", |
58e7b33a | 1793 | .op_rsize_bop = (nfsd4op_rsize)nfsd4_setclientid_rsize, |
b591480b BF |
1794 | }, |
1795 | [OP_SETCLIENTID_CONFIRM] = { | |
1796 | .op_func = (nfsd4op_func)nfsd4_setclientid_confirm, | |
58e7b33a | 1797 | .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS |
c856694e | 1798 | | OP_MODIFIES_SOMETHING | OP_CACHEME, |
b001a1b6 | 1799 | .op_name = "OP_SETCLIENTID_CONFIRM", |
58e7b33a | 1800 | .op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize, |
b591480b BF |
1801 | }, |
1802 | [OP_VERIFY] = { | |
1803 | .op_func = (nfsd4op_func)nfsd4_verify, | |
b001a1b6 | 1804 | .op_name = "OP_VERIFY", |
b591480b BF |
1805 | }, |
1806 | [OP_WRITE] = { | |
1807 | .op_func = (nfsd4op_func)nfsd4_write, | |
c856694e | 1808 | .op_flags = OP_MODIFIES_SOMETHING | OP_CACHEME, |
b001a1b6 | 1809 | .op_name = "OP_WRITE", |
58e7b33a | 1810 | .op_rsize_bop = (nfsd4op_rsize)nfsd4_write_rsize, |
30813e27 | 1811 | .op_get_currentstateid = (stateid_getter)nfsd4_get_writestateid, |
b591480b BF |
1812 | }, |
1813 | [OP_RELEASE_LOCKOWNER] = { | |
1814 | .op_func = (nfsd4op_func)nfsd4_release_lockowner, | |
58e7b33a MJ |
1815 | .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS |
1816 | | OP_MODIFIES_SOMETHING, | |
b001a1b6 | 1817 | .op_name = "OP_RELEASE_LOCKOWNER", |
58e7b33a | 1818 | .op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize, |
b591480b | 1819 | }, |
069b6ad4 AA |
1820 | |
1821 | /* NFSv4.1 operations */ | |
1822 | [OP_EXCHANGE_ID] = { | |
1823 | .op_func = (nfsd4op_func)nfsd4_exchange_id, | |
58e7b33a MJ |
1824 | .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP |
1825 | | OP_MODIFIES_SOMETHING, | |
069b6ad4 | 1826 | .op_name = "OP_EXCHANGE_ID", |
58e7b33a | 1827 | .op_rsize_bop = (nfsd4op_rsize)nfsd4_exchange_id_rsize, |
069b6ad4 | 1828 | }, |
cb73a9f4 BF |
1829 | [OP_BACKCHANNEL_CTL] = { |
1830 | .op_func = (nfsd4op_func)nfsd4_backchannel_ctl, | |
1831 | .op_flags = ALLOWED_WITHOUT_FH | OP_MODIFIES_SOMETHING, | |
1832 | .op_name = "OP_BACKCHANNEL_CTL", | |
1833 | .op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize, | |
1834 | }, | |
1d1bc8f2 BF |
1835 | [OP_BIND_CONN_TO_SESSION] = { |
1836 | .op_func = (nfsd4op_func)nfsd4_bind_conn_to_session, | |
58e7b33a MJ |
1837 | .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP |
1838 | | OP_MODIFIES_SOMETHING, | |
1d1bc8f2 | 1839 | .op_name = "OP_BIND_CONN_TO_SESSION", |
58e7b33a | 1840 | .op_rsize_bop = (nfsd4op_rsize)nfsd4_bind_conn_to_session_rsize, |
1d1bc8f2 | 1841 | }, |
069b6ad4 AA |
1842 | [OP_CREATE_SESSION] = { |
1843 | .op_func = (nfsd4op_func)nfsd4_create_session, | |
58e7b33a MJ |
1844 | .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP |
1845 | | OP_MODIFIES_SOMETHING, | |
069b6ad4 | 1846 | .op_name = "OP_CREATE_SESSION", |
58e7b33a | 1847 | .op_rsize_bop = (nfsd4op_rsize)nfsd4_create_session_rsize, |
069b6ad4 AA |
1848 | }, |
1849 | [OP_DESTROY_SESSION] = { | |
1850 | .op_func = (nfsd4op_func)nfsd4_destroy_session, | |
58e7b33a MJ |
1851 | .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP |
1852 | | OP_MODIFIES_SOMETHING, | |
069b6ad4 | 1853 | .op_name = "OP_DESTROY_SESSION", |
58e7b33a | 1854 | .op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize, |
069b6ad4 AA |
1855 | }, |
1856 | [OP_SEQUENCE] = { | |
1857 | .op_func = (nfsd4op_func)nfsd4_sequence, | |
f9bb94c4 | 1858 | .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP, |
069b6ad4 AA |
1859 | .op_name = "OP_SEQUENCE", |
1860 | }, | |
094b5d74 | 1861 | [OP_DESTROY_CLIENTID] = { |
345c2842 | 1862 | .op_func = (nfsd4op_func)nfsd4_destroy_clientid, |
58e7b33a MJ |
1863 | .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP |
1864 | | OP_MODIFIES_SOMETHING, | |
094b5d74 | 1865 | .op_name = "OP_DESTROY_CLIENTID", |
58e7b33a | 1866 | .op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize, |
094b5d74 | 1867 | }, |
4dc6ec00 BF |
1868 | [OP_RECLAIM_COMPLETE] = { |
1869 | .op_func = (nfsd4op_func)nfsd4_reclaim_complete, | |
58e7b33a | 1870 | .op_flags = ALLOWED_WITHOUT_FH | OP_MODIFIES_SOMETHING, |
4dc6ec00 | 1871 | .op_name = "OP_RECLAIM_COMPLETE", |
58e7b33a | 1872 | .op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize, |
4dc6ec00 | 1873 | }, |
04f4ad16 BF |
1874 | [OP_SECINFO_NO_NAME] = { |
1875 | .op_func = (nfsd4op_func)nfsd4_secinfo_no_name, | |
68d93184 | 1876 | .op_flags = OP_HANDLES_WRONGSEC, |
04f4ad16 BF |
1877 | .op_name = "OP_SECINFO_NO_NAME", |
1878 | }, | |
17456804 BS |
1879 | [OP_TEST_STATEID] = { |
1880 | .op_func = (nfsd4op_func)nfsd4_test_stateid, | |
1881 | .op_flags = ALLOWED_WITHOUT_FH, | |
1882 | .op_name = "OP_TEST_STATEID", | |
1883 | }, | |
e1ca12df BS |
1884 | [OP_FREE_STATEID] = { |
1885 | .op_func = (nfsd4op_func)nfsd4_free_stateid, | |
58e7b33a | 1886 | .op_flags = ALLOWED_WITHOUT_FH | OP_MODIFIES_SOMETHING, |
e1ca12df | 1887 | .op_name = "OP_FREE_STATEID", |
a1dc6955 | 1888 | .op_get_currentstateid = (stateid_getter)nfsd4_get_freestateid, |
58e7b33a | 1889 | .op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize, |
e1ca12df | 1890 | }, |
b591480b BF |
1891 | }; |
1892 | ||
4f0cefbf BF |
1893 | int nfsd4_max_reply(struct svc_rqst *rqstp, struct nfsd4_op *op) |
1894 | { | |
1895 | struct nfsd4_operation *opdesc; | |
1896 | nfsd4op_rsize estimator; | |
1897 | ||
1898 | if (op->opnum == OP_ILLEGAL) | |
1899 | return op_encode_hdr_size * sizeof(__be32); | |
1900 | opdesc = OPDESC(op); | |
1901 | estimator = opdesc->op_rsize_bop; | |
1902 | return estimator ? estimator(rqstp, op) : PAGE_SIZE; | |
1903 | } | |
1904 | ||
07d1f802 BF |
1905 | void warn_on_nonidempotent_op(struct nfsd4_op *op) |
1906 | { | |
1907 | if (OPDESC(op)->op_flags & OP_MODIFIES_SOMETHING) { | |
1908 | pr_err("unable to encode reply to nonidempotent op %d (%s)\n", | |
1909 | op->opnum, nfsd4_op_name(op->opnum)); | |
1910 | WARN_ON_ONCE(1); | |
1911 | } | |
1912 | } | |
1913 | ||
f1c7f79b | 1914 | static const char *nfsd4_op_name(unsigned opnum) |
b001a1b6 BH |
1915 | { |
1916 | if (opnum < ARRAY_SIZE(nfsd4_ops)) | |
1917 | return nfsd4_ops[opnum].op_name; | |
1918 | return "unknown_operation"; | |
1919 | } | |
1920 | ||
1da177e4 | 1921 | #define nfsd4_voidres nfsd4_voidargs |
1da177e4 LT |
1922 | struct nfsd4_voidargs { int dummy; }; |
1923 | ||
1da177e4 | 1924 | static struct svc_procedure nfsd_procedures4[2] = { |
0a93a47f YZ |
1925 | [NFSPROC4_NULL] = { |
1926 | .pc_func = (svc_procfunc) nfsd4_proc_null, | |
1927 | .pc_encode = (kxdrproc_t) nfs4svc_encode_voidres, | |
1928 | .pc_argsize = sizeof(struct nfsd4_voidargs), | |
1929 | .pc_ressize = sizeof(struct nfsd4_voidres), | |
1930 | .pc_cachetype = RC_NOCACHE, | |
1931 | .pc_xdrressize = 1, | |
1932 | }, | |
1933 | [NFSPROC4_COMPOUND] = { | |
1934 | .pc_func = (svc_procfunc) nfsd4_proc_compound, | |
1935 | .pc_decode = (kxdrproc_t) nfs4svc_decode_compoundargs, | |
1936 | .pc_encode = (kxdrproc_t) nfs4svc_encode_compoundres, | |
1937 | .pc_argsize = sizeof(struct nfsd4_compoundargs), | |
1938 | .pc_ressize = sizeof(struct nfsd4_compoundres), | |
3e98abff | 1939 | .pc_release = nfsd4_release_compoundargs, |
0a93a47f YZ |
1940 | .pc_cachetype = RC_NOCACHE, |
1941 | .pc_xdrressize = NFSD_BUFSIZE/4, | |
1942 | }, | |
1da177e4 LT |
1943 | }; |
1944 | ||
1945 | struct svc_version nfsd_version4 = { | |
1946 | .vs_vers = 4, | |
1947 | .vs_nproc = 2, | |
1948 | .vs_proc = nfsd_procedures4, | |
1949 | .vs_dispatch = nfsd_dispatch, | |
1950 | .vs_xdrsize = NFS4_SVC_XDRSIZE, | |
7e55b59b | 1951 | .vs_rpcb_optnl = 1, |
1da177e4 LT |
1952 | }; |
1953 | ||
1954 | /* | |
1955 | * Local variables: | |
1956 | * c-basic-offset: 8 | |
1957 | * End: | |
1958 | */ |