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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" |
9cf514cc | 46 | #include "pnfs.h" |
31ef83dc | 47 | #include "trace.h" |
1da177e4 | 48 | |
18032ca0 DQ |
49 | #ifdef CONFIG_NFSD_V4_SECURITY_LABEL |
50 | #include <linux/security.h> | |
51 | ||
52 | static inline void | |
53 | nfsd4_security_inode_setsecctx(struct svc_fh *resfh, struct xdr_netobj *label, u32 *bmval) | |
54 | { | |
55 | struct inode *inode = resfh->fh_dentry->d_inode; | |
56 | int status; | |
57 | ||
58 | mutex_lock(&inode->i_mutex); | |
59 | status = security_inode_setsecctx(resfh->fh_dentry, | |
60 | label->data, label->len); | |
61 | mutex_unlock(&inode->i_mutex); | |
62 | ||
63 | if (status) | |
64 | /* | |
65 | * XXX: We should really fail the whole open, but we may | |
66 | * already have created a new file, so it may be too | |
67 | * late. For now this seems the least of evils: | |
68 | */ | |
69 | bmval[2] &= ~FATTR4_WORD2_SECURITY_LABEL; | |
70 | ||
71 | return; | |
72 | } | |
73 | #else | |
74 | static inline void | |
75 | nfsd4_security_inode_setsecctx(struct svc_fh *resfh, struct xdr_netobj *label, u32 *bmval) | |
76 | { } | |
77 | #endif | |
78 | ||
1da177e4 LT |
79 | #define NFSDDBG_FACILITY NFSDDBG_PROC |
80 | ||
3c8e0316 YZ |
81 | static u32 nfsd_attrmask[] = { |
82 | NFSD_WRITEABLE_ATTRS_WORD0, | |
83 | NFSD_WRITEABLE_ATTRS_WORD1, | |
84 | NFSD_WRITEABLE_ATTRS_WORD2 | |
85 | }; | |
86 | ||
87 | static u32 nfsd41_ex_attrmask[] = { | |
88 | NFSD_SUPPATTR_EXCLCREAT_WORD0, | |
89 | NFSD_SUPPATTR_EXCLCREAT_WORD1, | |
90 | NFSD_SUPPATTR_EXCLCREAT_WORD2 | |
91 | }; | |
92 | ||
93 | static __be32 | |
94 | check_attr_support(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, | |
95 | u32 *bmval, u32 *writable) | |
96 | { | |
97 | struct dentry *dentry = cstate->current_fh.fh_dentry; | |
3c8e0316 YZ |
98 | |
99 | /* | |
100 | * Check about attributes are supported by the NFSv4 server or not. | |
101 | * According to spec, unsupported attributes return ERR_ATTRNOTSUPP. | |
102 | */ | |
103 | if ((bmval[0] & ~nfsd_suppattrs0(cstate->minorversion)) || | |
104 | (bmval[1] & ~nfsd_suppattrs1(cstate->minorversion)) || | |
105 | (bmval[2] & ~nfsd_suppattrs2(cstate->minorversion))) | |
106 | return nfserr_attrnotsupp; | |
107 | ||
108 | /* | |
a06b1261 | 109 | * Check FATTR4_WORD0_ACL can be supported |
3c8e0316 YZ |
110 | * in current environment or not. |
111 | */ | |
112 | if (bmval[0] & FATTR4_WORD0_ACL) { | |
113 | if (!IS_POSIXACL(dentry->d_inode)) | |
114 | return nfserr_attrnotsupp; | |
115 | } | |
3c8e0316 YZ |
116 | |
117 | /* | |
118 | * According to spec, read-only attributes return ERR_INVAL. | |
119 | */ | |
120 | if (writable) { | |
121 | if ((bmval[0] & ~writable[0]) || (bmval[1] & ~writable[1]) || | |
122 | (bmval[2] & ~writable[2])) | |
123 | return nfserr_inval; | |
124 | } | |
125 | ||
126 | return nfs_ok; | |
127 | } | |
128 | ||
129 | static __be32 | |
130 | nfsd4_check_open_attributes(struct svc_rqst *rqstp, | |
131 | struct nfsd4_compound_state *cstate, struct nfsd4_open *open) | |
132 | { | |
133 | __be32 status = nfs_ok; | |
134 | ||
135 | if (open->op_create == NFS4_OPEN_CREATE) { | |
136 | if (open->op_createmode == NFS4_CREATE_UNCHECKED | |
137 | || open->op_createmode == NFS4_CREATE_GUARDED) | |
138 | status = check_attr_support(rqstp, cstate, | |
139 | open->op_bmval, nfsd_attrmask); | |
140 | else if (open->op_createmode == NFS4_CREATE_EXCLUSIVE4_1) | |
141 | status = check_attr_support(rqstp, cstate, | |
142 | open->op_bmval, nfsd41_ex_attrmask); | |
143 | } | |
144 | ||
145 | return status; | |
146 | } | |
147 | ||
9208faf2 YZ |
148 | static int |
149 | is_create_with_attrs(struct nfsd4_open *open) | |
150 | { | |
151 | return open->op_create == NFS4_OPEN_CREATE | |
152 | && (open->op_createmode == NFS4_CREATE_UNCHECKED | |
153 | || open->op_createmode == NFS4_CREATE_GUARDED | |
154 | || open->op_createmode == NFS4_CREATE_EXCLUSIVE4_1); | |
155 | } | |
156 | ||
157 | /* | |
158 | * if error occurs when setting the acl, just clear the acl bit | |
159 | * in the returned attr bitmap. | |
160 | */ | |
161 | static void | |
162 | do_set_nfs4_acl(struct svc_rqst *rqstp, struct svc_fh *fhp, | |
163 | struct nfs4_acl *acl, u32 *bmval) | |
164 | { | |
165 | __be32 status; | |
166 | ||
167 | status = nfsd4_set_nfs4_acl(rqstp, fhp, acl); | |
168 | if (status) | |
169 | /* | |
170 | * We should probably fail the whole open at this point, | |
171 | * but we've already created the file, so it's too late; | |
172 | * So this seems the least of evils: | |
173 | */ | |
174 | bmval[0] &= ~FATTR4_WORD0_ACL; | |
175 | } | |
176 | ||
1da177e4 LT |
177 | static inline void |
178 | fh_dup2(struct svc_fh *dst, struct svc_fh *src) | |
179 | { | |
180 | fh_put(dst); | |
181 | dget(src->fh_dentry); | |
182 | if (src->fh_export) | |
bf18f163 | 183 | exp_get(src->fh_export); |
1da177e4 LT |
184 | *dst = *src; |
185 | } | |
186 | ||
b37ad28b | 187 | static __be32 |
dc730e17 | 188 | do_open_permission(struct svc_rqst *rqstp, struct svc_fh *current_fh, struct nfsd4_open *open, int accmode) |
1da177e4 | 189 | { |
b37ad28b | 190 | __be32 status; |
1da177e4 LT |
191 | |
192 | if (open->op_truncate && | |
193 | !(open->op_share_access & NFS4_SHARE_ACCESS_WRITE)) | |
194 | return nfserr_inval; | |
195 | ||
a043226b BF |
196 | accmode |= NFSD_MAY_READ_IF_EXEC; |
197 | ||
1da177e4 | 198 | if (open->op_share_access & NFS4_SHARE_ACCESS_READ) |
8837abca | 199 | accmode |= NFSD_MAY_READ; |
9801d8a3 | 200 | if (open->op_share_access & NFS4_SHARE_ACCESS_WRITE) |
8837abca | 201 | accmode |= (NFSD_MAY_WRITE | NFSD_MAY_TRUNC); |
57ecb34f | 202 | if (open->op_share_deny & NFS4_SHARE_DENY_READ) |
8837abca | 203 | accmode |= NFSD_MAY_WRITE; |
1da177e4 LT |
204 | |
205 | status = fh_verify(rqstp, current_fh, S_IFREG, accmode); | |
206 | ||
207 | return status; | |
208 | } | |
209 | ||
aadab6c6 BF |
210 | static __be32 nfsd_check_obj_isreg(struct svc_fh *fh) |
211 | { | |
212 | umode_t mode = fh->fh_dentry->d_inode->i_mode; | |
213 | ||
214 | if (S_ISREG(mode)) | |
215 | return nfs_ok; | |
216 | if (S_ISDIR(mode)) | |
217 | return nfserr_isdir; | |
218 | /* | |
219 | * Using err_symlink as our catch-all case may look odd; but | |
220 | * there's no other obvious error for this case in 4.0, and we | |
221 | * happen to know that it will cause the linux v4 client to do | |
222 | * the right thing on attempts to open something other than a | |
223 | * regular file. | |
224 | */ | |
225 | return nfserr_symlink; | |
226 | } | |
227 | ||
bbc9c36c BF |
228 | static void nfsd4_set_open_owner_reply_cache(struct nfsd4_compound_state *cstate, struct nfsd4_open *open, struct svc_fh *resfh) |
229 | { | |
230 | if (nfsd4_has_session(cstate)) | |
231 | return; | |
232 | fh_copy_shallow(&open->op_openowner->oo_owner.so_replay.rp_openfh, | |
233 | &resfh->fh_handle); | |
234 | } | |
235 | ||
b37ad28b | 236 | static __be32 |
c0e6bee4 | 237 | do_open_lookup(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, struct nfsd4_open *open, struct svc_fh **resfh) |
1da177e4 | 238 | { |
bbc9c36c | 239 | struct svc_fh *current_fh = &cstate->current_fh; |
7007c90f | 240 | int accmode; |
b37ad28b | 241 | __be32 status; |
1da177e4 | 242 | |
c0e6bee4 BF |
243 | *resfh = kmalloc(sizeof(struct svc_fh), GFP_KERNEL); |
244 | if (!*resfh) | |
59deeb9e | 245 | return nfserr_jukebox; |
c0e6bee4 | 246 | fh_init(*resfh, NFS4_FHSIZE); |
1da177e4 LT |
247 | open->op_truncate = 0; |
248 | ||
249 | if (open->op_create) { | |
79fb54ab BH |
250 | /* FIXME: check session persistence and pnfs flags. |
251 | * The nfsv4.1 spec requires the following semantics: | |
252 | * | |
253 | * Persistent | pNFS | Server REQUIRED | Client Allowed | |
254 | * Reply Cache | server | | | |
255 | * -------------+--------+-----------------+-------------------- | |
256 | * no | no | EXCLUSIVE4_1 | EXCLUSIVE4_1 | |
257 | * | | | (SHOULD) | |
258 | * | | and EXCLUSIVE4 | or EXCLUSIVE4 | |
259 | * | | | (SHOULD NOT) | |
260 | * no | yes | EXCLUSIVE4_1 | EXCLUSIVE4_1 | |
261 | * yes | no | GUARDED4 | GUARDED4 | |
262 | * yes | yes | GUARDED4 | GUARDED4 | |
263 | */ | |
264 | ||
1da177e4 LT |
265 | /* |
266 | * Note: create modes (UNCHECKED,GUARDED...) are the same | |
ac6721a1 | 267 | * in NFSv4 as in v3 except EXCLUSIVE4_1. |
1da177e4 | 268 | */ |
ac6721a1 | 269 | status = do_nfsd_create(rqstp, current_fh, open->op_fname.data, |
1da177e4 | 270 | open->op_fname.len, &open->op_iattr, |
c0e6bee4 | 271 | *resfh, open->op_createmode, |
749997e5 | 272 | (u32 *)open->op_verf.data, |
856121b2 | 273 | &open->op_truncate, &open->op_created); |
749997e5 | 274 | |
18032ca0 | 275 | if (!status && open->op_label.len) |
c0e6bee4 | 276 | nfsd4_security_inode_setsecctx(*resfh, &open->op_label, open->op_bmval); |
18032ca0 | 277 | |
99f88726 BF |
278 | /* |
279 | * Following rfc 3530 14.2.16, use the returned bitmask | |
280 | * to indicate which attributes we used to store the | |
281 | * verifier: | |
749997e5 JL |
282 | */ |
283 | if (open->op_createmode == NFS4_CREATE_EXCLUSIVE && status == 0) | |
99f88726 | 284 | open->op_bmval[1] = (FATTR4_WORD1_TIME_ACCESS | |
9dc4e6c4 | 285 | FATTR4_WORD1_TIME_MODIFY); |
4335723e BF |
286 | } else |
287 | /* | |
288 | * Note this may exit with the parent still locked. | |
289 | * We will hold the lock until nfsd4_open's final | |
290 | * lookup, to prevent renames or unlinks until we've had | |
291 | * a chance to an acquire a delegation if appropriate. | |
292 | */ | |
1da177e4 | 293 | status = nfsd_lookup(rqstp, current_fh, |
c0e6bee4 | 294 | open->op_fname.data, open->op_fname.len, *resfh); |
9dc4e6c4 BF |
295 | if (status) |
296 | goto out; | |
c0e6bee4 | 297 | status = nfsd_check_obj_isreg(*resfh); |
af85852d BF |
298 | if (status) |
299 | goto out; | |
1da177e4 | 300 | |
9208faf2 | 301 | if (is_create_with_attrs(open) && open->op_acl != NULL) |
c0e6bee4 | 302 | do_set_nfs4_acl(rqstp, *resfh, open->op_acl, open->op_bmval); |
9208faf2 | 303 | |
c0e6bee4 | 304 | nfsd4_set_open_owner_reply_cache(cstate, open, *resfh); |
7007c90f | 305 | accmode = NFSD_MAY_NOP; |
89f6c336 BF |
306 | if (open->op_created || |
307 | open->op_claim_type == NFS4_OPEN_CLAIM_DELEGATE_CUR) | |
7007c90f | 308 | accmode |= NFSD_MAY_OWNER_OVERRIDE; |
c0e6bee4 | 309 | status = do_open_permission(rqstp, *resfh, open, accmode); |
41fd1e42 | 310 | set_change_info(&open->op_cinfo, current_fh); |
af85852d | 311 | out: |
1da177e4 LT |
312 | return status; |
313 | } | |
314 | ||
b37ad28b | 315 | static __be32 |
bbc9c36c | 316 | do_open_fhandle(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, struct nfsd4_open *open) |
1da177e4 | 317 | { |
bbc9c36c | 318 | struct svc_fh *current_fh = &cstate->current_fh; |
b37ad28b | 319 | __be32 status; |
9f415eb2 | 320 | int accmode = 0; |
1da177e4 | 321 | |
1da177e4 LT |
322 | /* We don't know the target directory, and therefore can not |
323 | * set the change info | |
324 | */ | |
325 | ||
326 | memset(&open->op_cinfo, 0, sizeof(struct nfsd4_change_info)); | |
327 | ||
bbc9c36c | 328 | nfsd4_set_open_owner_reply_cache(cstate, open, current_fh); |
1da177e4 LT |
329 | |
330 | open->op_truncate = (open->op_iattr.ia_valid & ATTR_SIZE) && | |
331 | (open->op_iattr.ia_size == 0); | |
9f415eb2 BF |
332 | /* |
333 | * In the delegation case, the client is telling us about an | |
334 | * open that it *already* performed locally, some time ago. We | |
335 | * should let it succeed now if possible. | |
336 | * | |
337 | * In the case of a CLAIM_FH open, on the other hand, the client | |
338 | * may be counting on us to enforce permissions (the Linux 4.1 | |
339 | * client uses this for normal opens, for example). | |
340 | */ | |
341 | if (open->op_claim_type == NFS4_OPEN_CLAIM_DELEG_CUR_FH) | |
342 | accmode = NFSD_MAY_OWNER_OVERRIDE; | |
1da177e4 | 343 | |
9f415eb2 | 344 | status = do_open_permission(rqstp, current_fh, open, accmode); |
1da177e4 LT |
345 | |
346 | return status; | |
347 | } | |
348 | ||
60adfc50 AA |
349 | static void |
350 | copy_clientid(clientid_t *clid, struct nfsd4_session *session) | |
351 | { | |
352 | struct nfsd4_sessionid *sid = | |
353 | (struct nfsd4_sessionid *)session->se_sessionid.data; | |
354 | ||
355 | clid->cl_boot = sid->clientid.cl_boot; | |
356 | clid->cl_id = sid->clientid.cl_id; | |
357 | } | |
1da177e4 | 358 | |
7191155b | 359 | static __be32 |
ca364317 | 360 | nfsd4_open(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
a4f1706a | 361 | struct nfsd4_open *open) |
1da177e4 | 362 | { |
b37ad28b | 363 | __be32 status; |
c0e6bee4 | 364 | struct svc_fh *resfh = NULL; |
6668958f | 365 | struct nfsd4_compoundres *resp; |
3320fef1 SK |
366 | struct net *net = SVC_NET(rqstp); |
367 | struct nfsd_net *nn = net_generic(net, nfsd_net_id); | |
6668958f | 368 | |
fe0750e5 | 369 | dprintk("NFSD: nfsd4_open filename %.*s op_openowner %p\n", |
1da177e4 | 370 | (int)open->op_fname.len, open->op_fname.data, |
fe0750e5 | 371 | open->op_openowner); |
1da177e4 | 372 | |
1da177e4 LT |
373 | /* This check required by spec. */ |
374 | if (open->op_create && open->op_claim_type != NFS4_OPEN_CLAIM_NULL) | |
375 | return nfserr_inval; | |
376 | ||
856121b2 | 377 | open->op_created = 0; |
ab1350b2 MJ |
378 | /* |
379 | * RFC5661 18.51.3 | |
380 | * Before RECLAIM_COMPLETE done, server should deny new lock | |
381 | */ | |
382 | if (nfsd4_has_session(cstate) && | |
a52d726b JL |
383 | !test_bit(NFSD4_CLIENT_RECLAIM_COMPLETE, |
384 | &cstate->session->se_client->cl_flags) && | |
ab1350b2 MJ |
385 | open->op_claim_type != NFS4_OPEN_CLAIM_PREVIOUS) |
386 | return nfserr_grace; | |
387 | ||
60adfc50 AA |
388 | if (nfsd4_has_session(cstate)) |
389 | copy_clientid(&open->op_clientid, cstate->session); | |
390 | ||
1da177e4 | 391 | /* check seqid for replay. set nfs4_owner */ |
6668958f | 392 | resp = rqstp->rq_resp; |
3320fef1 | 393 | status = nfsd4_process_open1(&resp->cstate, open, nn); |
a90b061c | 394 | if (status == nfserr_replay_me) { |
fe0750e5 | 395 | struct nfs4_replay *rp = &open->op_openowner->oo_owner.so_replay; |
ca364317 | 396 | fh_put(&cstate->current_fh); |
a4773c08 BF |
397 | fh_copy_shallow(&cstate->current_fh.fh_handle, |
398 | &rp->rp_openfh); | |
8837abca | 399 | status = fh_verify(rqstp, &cstate->current_fh, 0, NFSD_MAY_NOP); |
1da177e4 LT |
400 | if (status) |
401 | dprintk("nfsd4_open: replay failed" | |
402 | " restoring previous filehandle\n"); | |
403 | else | |
a90b061c | 404 | status = nfserr_replay_me; |
1da177e4 LT |
405 | } |
406 | if (status) | |
407 | goto out; | |
9d313b17 BF |
408 | if (open->op_xdr_error) { |
409 | status = open->op_xdr_error; | |
410 | goto out; | |
411 | } | |
fb553c0f | 412 | |
3c8e0316 YZ |
413 | status = nfsd4_check_open_attributes(rqstp, cstate, open); |
414 | if (status) | |
415 | goto out; | |
416 | ||
fb553c0f BF |
417 | /* Openowner is now set, so sequence id will get bumped. Now we need |
418 | * these checks before we do any creates: */ | |
cbd0d51a | 419 | status = nfserr_grace; |
3320fef1 | 420 | if (locks_in_grace(net) && open->op_claim_type != NFS4_OPEN_CLAIM_PREVIOUS) |
cbd0d51a BF |
421 | goto out; |
422 | status = nfserr_no_grace; | |
3320fef1 | 423 | if (!locks_in_grace(net) && open->op_claim_type == NFS4_OPEN_CLAIM_PREVIOUS) |
cbd0d51a | 424 | goto out; |
fb553c0f | 425 | |
1da177e4 | 426 | switch (open->op_claim_type) { |
0dd3c192 | 427 | case NFS4_OPEN_CLAIM_DELEGATE_CUR: |
1da177e4 | 428 | case NFS4_OPEN_CLAIM_NULL: |
c0e6bee4 | 429 | status = do_open_lookup(rqstp, cstate, open, &resfh); |
1da177e4 LT |
430 | if (status) |
431 | goto out; | |
432 | break; | |
433 | case NFS4_OPEN_CLAIM_PREVIOUS: | |
3320fef1 | 434 | status = nfs4_check_open_reclaim(&open->op_clientid, |
0fe492db | 435 | cstate, nn); |
0cf99b91 MJ |
436 | if (status) |
437 | goto out; | |
ba5378b6 | 438 | open->op_openowner->oo_flags |= NFS4_OO_CONFIRMED; |
8b289b2c BF |
439 | case NFS4_OPEN_CLAIM_FH: |
440 | case NFS4_OPEN_CLAIM_DELEG_CUR_FH: | |
bbc9c36c | 441 | status = do_open_fhandle(rqstp, cstate, open); |
1da177e4 LT |
442 | if (status) |
443 | goto out; | |
c0e6bee4 | 444 | resfh = &cstate->current_fh; |
1da177e4 | 445 | break; |
8b289b2c | 446 | case NFS4_OPEN_CLAIM_DELEG_PREV_FH: |
1da177e4 | 447 | case NFS4_OPEN_CLAIM_DELEGATE_PREV: |
2fdada03 | 448 | dprintk("NFSD: unsupported OPEN claim type %d\n", |
1da177e4 LT |
449 | open->op_claim_type); |
450 | status = nfserr_notsupp; | |
451 | goto out; | |
452 | default: | |
2fdada03 | 453 | dprintk("NFSD: Invalid OPEN claim type %d\n", |
1da177e4 LT |
454 | open->op_claim_type); |
455 | status = nfserr_inval; | |
456 | goto out; | |
457 | } | |
458 | /* | |
459 | * nfsd4_process_open2() does the actual opening of the file. If | |
460 | * successful, it (1) truncates the file if open->op_truncate was | |
461 | * set, (2) sets open->op_stateid, (3) sets open->op_delegation. | |
462 | */ | |
c0e6bee4 | 463 | status = nfsd4_process_open2(rqstp, resfh, open); |
b3fbfe0e JL |
464 | WARN(status && open->op_created, |
465 | "nfsd4_process_open2 failed to open newly-created file! status=%u\n", | |
466 | be32_to_cpu(status)); | |
1da177e4 | 467 | out: |
c0e6bee4 BF |
468 | if (resfh && resfh != &cstate->current_fh) { |
469 | fh_dup2(&cstate->current_fh, resfh); | |
470 | fh_put(resfh); | |
471 | kfree(resfh); | |
472 | } | |
58fb12e6 | 473 | nfsd4_cleanup_open_state(cstate, open, status); |
9411b1d4 | 474 | nfsd4_bump_seqid(cstate, status); |
1da177e4 LT |
475 | return status; |
476 | } | |
477 | ||
9d313b17 BF |
478 | /* |
479 | * OPEN is the only seqid-mutating operation whose decoding can fail | |
480 | * with a seqid-mutating error (specifically, decoding of user names in | |
481 | * the attributes). Therefore we have to do some processing to look up | |
482 | * the stateowner so that we can bump the seqid. | |
483 | */ | |
484 | static __be32 nfsd4_open_omfg(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, struct nfsd4_op *op) | |
485 | { | |
486 | struct nfsd4_open *open = (struct nfsd4_open *)&op->u; | |
487 | ||
488 | if (!seqid_mutating_err(ntohl(op->status))) | |
489 | return op->status; | |
490 | if (nfsd4_has_session(cstate)) | |
491 | return op->status; | |
492 | open->op_xdr_error = op->status; | |
493 | return nfsd4_open(rqstp, cstate, open); | |
494 | } | |
495 | ||
1da177e4 LT |
496 | /* |
497 | * filehandle-manipulating ops. | |
498 | */ | |
7191155b | 499 | static __be32 |
b591480b BF |
500 | nfsd4_getfh(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
501 | struct svc_fh **getfh) | |
1da177e4 | 502 | { |
ca364317 | 503 | if (!cstate->current_fh.fh_dentry) |
1da177e4 LT |
504 | return nfserr_nofilehandle; |
505 | ||
ca364317 | 506 | *getfh = &cstate->current_fh; |
1da177e4 LT |
507 | return nfs_ok; |
508 | } | |
509 | ||
7191155b | 510 | static __be32 |
ca364317 BF |
511 | nfsd4_putfh(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
512 | struct nfsd4_putfh *putfh) | |
1da177e4 | 513 | { |
ca364317 BF |
514 | fh_put(&cstate->current_fh); |
515 | cstate->current_fh.fh_handle.fh_size = putfh->pf_fhlen; | |
516 | memcpy(&cstate->current_fh.fh_handle.fh_base, putfh->pf_fhval, | |
517 | putfh->pf_fhlen); | |
68d93184 | 518 | return fh_verify(rqstp, &cstate->current_fh, 0, NFSD_MAY_BYPASS_GSS); |
1da177e4 LT |
519 | } |
520 | ||
7191155b | 521 | static __be32 |
b591480b BF |
522 | nfsd4_putrootfh(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
523 | void *arg) | |
1da177e4 | 524 | { |
b37ad28b | 525 | __be32 status; |
1da177e4 | 526 | |
ca364317 | 527 | fh_put(&cstate->current_fh); |
df547efb | 528 | status = exp_pseudoroot(rqstp, &cstate->current_fh); |
1da177e4 LT |
529 | return status; |
530 | } | |
531 | ||
7191155b | 532 | static __be32 |
b591480b BF |
533 | nfsd4_restorefh(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
534 | void *arg) | |
1da177e4 | 535 | { |
ca364317 | 536 | if (!cstate->save_fh.fh_dentry) |
1da177e4 LT |
537 | return nfserr_restorefh; |
538 | ||
ca364317 | 539 | fh_dup2(&cstate->current_fh, &cstate->save_fh); |
37c593c5 TM |
540 | if (HAS_STATE_ID(cstate, SAVED_STATE_ID_FLAG)) { |
541 | memcpy(&cstate->current_stateid, &cstate->save_stateid, sizeof(stateid_t)); | |
542 | SET_STATE_ID(cstate, CURRENT_STATE_ID_FLAG); | |
543 | } | |
1da177e4 LT |
544 | return nfs_ok; |
545 | } | |
546 | ||
7191155b | 547 | static __be32 |
b591480b BF |
548 | nfsd4_savefh(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
549 | void *arg) | |
1da177e4 | 550 | { |
ca364317 | 551 | if (!cstate->current_fh.fh_dentry) |
1da177e4 LT |
552 | return nfserr_nofilehandle; |
553 | ||
ca364317 | 554 | fh_dup2(&cstate->save_fh, &cstate->current_fh); |
37c593c5 TM |
555 | if (HAS_STATE_ID(cstate, CURRENT_STATE_ID_FLAG)) { |
556 | memcpy(&cstate->save_stateid, &cstate->current_stateid, sizeof(stateid_t)); | |
557 | SET_STATE_ID(cstate, SAVED_STATE_ID_FLAG); | |
558 | } | |
1da177e4 LT |
559 | return nfs_ok; |
560 | } | |
561 | ||
562 | /* | |
563 | * misc nfsv4 ops | |
564 | */ | |
7191155b | 565 | static __be32 |
ca364317 BF |
566 | nfsd4_access(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
567 | struct nfsd4_access *access) | |
1da177e4 LT |
568 | { |
569 | if (access->ac_req_access & ~NFS3_ACCESS_FULL) | |
570 | return nfserr_inval; | |
571 | ||
572 | access->ac_resp_access = access->ac_req_access; | |
ca364317 BF |
573 | return nfsd_access(rqstp, &cstate->current_fh, &access->ac_resp_access, |
574 | &access->ac_supported); | |
1da177e4 LT |
575 | } |
576 | ||
b9c0ef85 | 577 | static void gen_boot_verifier(nfs4_verifier *verifier, struct net *net) |
ab4684d1 CL |
578 | { |
579 | __be32 verf[2]; | |
b9c0ef85 | 580 | struct nfsd_net *nn = net_generic(net, nfsd_net_id); |
ab4684d1 | 581 | |
f419992c JL |
582 | /* |
583 | * This is opaque to client, so no need to byte-swap. Use | |
584 | * __force to keep sparse happy | |
585 | */ | |
586 | verf[0] = (__force __be32)nn->nfssvc_boot.tv_sec; | |
587 | verf[1] = (__force __be32)nn->nfssvc_boot.tv_usec; | |
ab4684d1 CL |
588 | memcpy(verifier->data, verf, sizeof(verifier->data)); |
589 | } | |
590 | ||
7191155b | 591 | static __be32 |
ca364317 BF |
592 | nfsd4_commit(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
593 | struct nfsd4_commit *commit) | |
1da177e4 | 594 | { |
b9c0ef85 | 595 | gen_boot_verifier(&commit->co_verf, SVC_NET(rqstp)); |
75c096f7 | 596 | return nfsd_commit(rqstp, &cstate->current_fh, commit->co_offset, |
ca364317 | 597 | commit->co_count); |
1da177e4 LT |
598 | } |
599 | ||
b37ad28b | 600 | static __be32 |
ca364317 BF |
601 | nfsd4_create(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
602 | struct nfsd4_create *create) | |
1da177e4 LT |
603 | { |
604 | struct svc_fh resfh; | |
b37ad28b | 605 | __be32 status; |
1da177e4 LT |
606 | dev_t rdev; |
607 | ||
608 | fh_init(&resfh, NFS4_FHSIZE); | |
609 | ||
8837abca MS |
610 | status = fh_verify(rqstp, &cstate->current_fh, S_IFDIR, |
611 | NFSD_MAY_CREATE); | |
1da177e4 LT |
612 | if (status) |
613 | return status; | |
614 | ||
3c8e0316 YZ |
615 | status = check_attr_support(rqstp, cstate, create->cr_bmval, |
616 | nfsd_attrmask); | |
617 | if (status) | |
618 | return status; | |
619 | ||
1da177e4 LT |
620 | switch (create->cr_type) { |
621 | case NF4LNK: | |
ca364317 BF |
622 | status = nfsd_symlink(rqstp, &cstate->current_fh, |
623 | create->cr_name, create->cr_namelen, | |
1e444f5b | 624 | create->cr_data, &resfh); |
1da177e4 LT |
625 | break; |
626 | ||
627 | case NF4BLK: | |
628 | rdev = MKDEV(create->cr_specdata1, create->cr_specdata2); | |
629 | if (MAJOR(rdev) != create->cr_specdata1 || | |
630 | MINOR(rdev) != create->cr_specdata2) | |
631 | return nfserr_inval; | |
ca364317 BF |
632 | status = nfsd_create(rqstp, &cstate->current_fh, |
633 | create->cr_name, create->cr_namelen, | |
634 | &create->cr_iattr, S_IFBLK, rdev, &resfh); | |
1da177e4 LT |
635 | break; |
636 | ||
637 | case NF4CHR: | |
638 | rdev = MKDEV(create->cr_specdata1, create->cr_specdata2); | |
639 | if (MAJOR(rdev) != create->cr_specdata1 || | |
640 | MINOR(rdev) != create->cr_specdata2) | |
641 | return nfserr_inval; | |
ca364317 BF |
642 | status = nfsd_create(rqstp, &cstate->current_fh, |
643 | create->cr_name, create->cr_namelen, | |
644 | &create->cr_iattr,S_IFCHR, rdev, &resfh); | |
1da177e4 LT |
645 | break; |
646 | ||
647 | case NF4SOCK: | |
ca364317 BF |
648 | status = nfsd_create(rqstp, &cstate->current_fh, |
649 | create->cr_name, create->cr_namelen, | |
650 | &create->cr_iattr, S_IFSOCK, 0, &resfh); | |
1da177e4 LT |
651 | break; |
652 | ||
653 | case NF4FIFO: | |
ca364317 BF |
654 | status = nfsd_create(rqstp, &cstate->current_fh, |
655 | create->cr_name, create->cr_namelen, | |
656 | &create->cr_iattr, S_IFIFO, 0, &resfh); | |
1da177e4 LT |
657 | break; |
658 | ||
659 | case NF4DIR: | |
660 | create->cr_iattr.ia_valid &= ~ATTR_SIZE; | |
ca364317 BF |
661 | status = nfsd_create(rqstp, &cstate->current_fh, |
662 | create->cr_name, create->cr_namelen, | |
663 | &create->cr_iattr, S_IFDIR, 0, &resfh); | |
1da177e4 LT |
664 | break; |
665 | ||
666 | default: | |
667 | status = nfserr_badtype; | |
668 | } | |
669 | ||
9208faf2 YZ |
670 | if (status) |
671 | goto out; | |
1da177e4 | 672 | |
18032ca0 DQ |
673 | if (create->cr_label.len) |
674 | nfsd4_security_inode_setsecctx(&resfh, &create->cr_label, create->cr_bmval); | |
675 | ||
9208faf2 YZ |
676 | if (create->cr_acl != NULL) |
677 | do_set_nfs4_acl(rqstp, &resfh, create->cr_acl, | |
678 | create->cr_bmval); | |
679 | ||
680 | fh_unlock(&cstate->current_fh); | |
681 | set_change_info(&create->cr_cinfo, &cstate->current_fh); | |
682 | fh_dup2(&cstate->current_fh, &resfh); | |
683 | out: | |
1da177e4 LT |
684 | fh_put(&resfh); |
685 | return status; | |
686 | } | |
687 | ||
7191155b | 688 | static __be32 |
ca364317 BF |
689 | nfsd4_getattr(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
690 | struct nfsd4_getattr *getattr) | |
1da177e4 | 691 | { |
b37ad28b | 692 | __be32 status; |
1da177e4 | 693 | |
8837abca | 694 | status = fh_verify(rqstp, &cstate->current_fh, 0, NFSD_MAY_NOP); |
1da177e4 LT |
695 | if (status) |
696 | return status; | |
697 | ||
698 | if (getattr->ga_bmval[1] & NFSD_WRITEONLY_ATTRS_WORD1) | |
699 | return nfserr_inval; | |
700 | ||
7e705706 AA |
701 | getattr->ga_bmval[0] &= nfsd_suppattrs0(cstate->minorversion); |
702 | getattr->ga_bmval[1] &= nfsd_suppattrs1(cstate->minorversion); | |
703 | getattr->ga_bmval[2] &= nfsd_suppattrs2(cstate->minorversion); | |
1da177e4 | 704 | |
ca364317 | 705 | getattr->ga_fhp = &cstate->current_fh; |
1da177e4 LT |
706 | return nfs_ok; |
707 | } | |
708 | ||
7191155b | 709 | static __be32 |
ca364317 BF |
710 | nfsd4_link(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
711 | struct nfsd4_link *link) | |
1da177e4 | 712 | { |
b37ad28b | 713 | __be32 status = nfserr_nofilehandle; |
1da177e4 | 714 | |
ca364317 | 715 | if (!cstate->save_fh.fh_dentry) |
1da177e4 | 716 | return status; |
ca364317 BF |
717 | status = nfsd_link(rqstp, &cstate->current_fh, |
718 | link->li_name, link->li_namelen, &cstate->save_fh); | |
1da177e4 | 719 | if (!status) |
ca364317 | 720 | set_change_info(&link->li_cinfo, &cstate->current_fh); |
1da177e4 LT |
721 | return status; |
722 | } | |
723 | ||
0ff7ab46 | 724 | static __be32 nfsd4_do_lookupp(struct svc_rqst *rqstp, struct svc_fh *fh) |
1da177e4 LT |
725 | { |
726 | struct svc_fh tmp_fh; | |
b37ad28b | 727 | __be32 ret; |
1da177e4 LT |
728 | |
729 | fh_init(&tmp_fh, NFS4_FHSIZE); | |
df547efb BF |
730 | ret = exp_pseudoroot(rqstp, &tmp_fh); |
731 | if (ret) | |
1da177e4 | 732 | return ret; |
0ff7ab46 | 733 | if (tmp_fh.fh_dentry == fh->fh_dentry) { |
1da177e4 LT |
734 | fh_put(&tmp_fh); |
735 | return nfserr_noent; | |
736 | } | |
737 | fh_put(&tmp_fh); | |
0ff7ab46 BF |
738 | return nfsd_lookup(rqstp, fh, "..", 2, fh); |
739 | } | |
740 | ||
741 | static __be32 | |
742 | nfsd4_lookupp(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, | |
743 | void *arg) | |
744 | { | |
745 | return nfsd4_do_lookupp(rqstp, &cstate->current_fh); | |
1da177e4 LT |
746 | } |
747 | ||
7191155b | 748 | static __be32 |
ca364317 BF |
749 | nfsd4_lookup(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
750 | struct nfsd4_lookup *lookup) | |
1da177e4 | 751 | { |
ca364317 BF |
752 | return nfsd_lookup(rqstp, &cstate->current_fh, |
753 | lookup->lo_name, lookup->lo_len, | |
754 | &cstate->current_fh); | |
1da177e4 LT |
755 | } |
756 | ||
7191155b | 757 | static __be32 |
ca364317 BF |
758 | nfsd4_read(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
759 | struct nfsd4_read *read) | |
1da177e4 | 760 | { |
b37ad28b | 761 | __be32 status; |
1da177e4 LT |
762 | |
763 | /* no need to check permission - this will be done in nfsd_read() */ | |
764 | ||
7e06b7f9 | 765 | read->rd_filp = NULL; |
1da177e4 LT |
766 | if (read->rd_offset >= OFFSET_MAX) |
767 | return nfserr_inval; | |
768 | ||
9b3234b9 BF |
769 | /* |
770 | * If we do a zero copy read, then a client will see read data | |
771 | * that reflects the state of the file *after* performing the | |
772 | * following compound. | |
773 | * | |
774 | * To ensure proper ordering, we therefore turn off zero copy if | |
775 | * the client wants us to do more in this compound: | |
776 | */ | |
777 | if (!nfsd4_last_compound_op(rqstp)) | |
779fb0f3 | 778 | clear_bit(RQ_SPLICE_OK, &rqstp->rq_flags); |
9b3234b9 | 779 | |
1da177e4 | 780 | /* check stateid */ |
5ccb0066 SK |
781 | if ((status = nfs4_preprocess_stateid_op(SVC_NET(rqstp), |
782 | cstate, &read->rd_stateid, | |
dd453dfd | 783 | RD_STATE, &read->rd_filp))) { |
1da177e4 LT |
784 | dprintk("NFSD: nfsd4_read: couldn't process stateid!\n"); |
785 | goto out; | |
786 | } | |
787 | status = nfs_ok; | |
788 | out: | |
1da177e4 | 789 | read->rd_rqstp = rqstp; |
ca364317 | 790 | read->rd_fhp = &cstate->current_fh; |
1da177e4 LT |
791 | return status; |
792 | } | |
793 | ||
7191155b | 794 | static __be32 |
ca364317 BF |
795 | nfsd4_readdir(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
796 | struct nfsd4_readdir *readdir) | |
1da177e4 LT |
797 | { |
798 | u64 cookie = readdir->rd_cookie; | |
799 | static const nfs4_verifier zeroverf; | |
800 | ||
801 | /* no need to check permission - this will be done in nfsd_readdir() */ | |
802 | ||
803 | if (readdir->rd_bmval[1] & NFSD_WRITEONLY_ATTRS_WORD1) | |
804 | return nfserr_inval; | |
805 | ||
7e705706 AA |
806 | readdir->rd_bmval[0] &= nfsd_suppattrs0(cstate->minorversion); |
807 | readdir->rd_bmval[1] &= nfsd_suppattrs1(cstate->minorversion); | |
808 | readdir->rd_bmval[2] &= nfsd_suppattrs2(cstate->minorversion); | |
1da177e4 | 809 | |
832023bf | 810 | if ((cookie == 1) || (cookie == 2) || |
1da177e4 LT |
811 | (cookie == 0 && memcmp(readdir->rd_verf.data, zeroverf.data, NFS4_VERIFIER_SIZE))) |
812 | return nfserr_bad_cookie; | |
813 | ||
814 | readdir->rd_rqstp = rqstp; | |
ca364317 | 815 | readdir->rd_fhp = &cstate->current_fh; |
1da177e4 LT |
816 | return nfs_ok; |
817 | } | |
818 | ||
7191155b | 819 | static __be32 |
ca364317 BF |
820 | nfsd4_readlink(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
821 | struct nfsd4_readlink *readlink) | |
1da177e4 LT |
822 | { |
823 | readlink->rl_rqstp = rqstp; | |
ca364317 | 824 | readlink->rl_fhp = &cstate->current_fh; |
1da177e4 LT |
825 | return nfs_ok; |
826 | } | |
827 | ||
7191155b | 828 | static __be32 |
ca364317 BF |
829 | nfsd4_remove(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
830 | struct nfsd4_remove *remove) | |
1da177e4 | 831 | { |
b37ad28b | 832 | __be32 status; |
1da177e4 | 833 | |
5ccb0066 | 834 | if (locks_in_grace(SVC_NET(rqstp))) |
c815afc7 | 835 | return nfserr_grace; |
ca364317 BF |
836 | status = nfsd_unlink(rqstp, &cstate->current_fh, 0, |
837 | remove->rm_name, remove->rm_namelen); | |
1da177e4 | 838 | if (!status) { |
ca364317 BF |
839 | fh_unlock(&cstate->current_fh); |
840 | set_change_info(&remove->rm_cinfo, &cstate->current_fh); | |
1da177e4 LT |
841 | } |
842 | return status; | |
843 | } | |
844 | ||
7191155b | 845 | static __be32 |
ca364317 BF |
846 | nfsd4_rename(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
847 | struct nfsd4_rename *rename) | |
1da177e4 | 848 | { |
b37ad28b | 849 | __be32 status = nfserr_nofilehandle; |
1da177e4 | 850 | |
ca364317 | 851 | if (!cstate->save_fh.fh_dentry) |
1da177e4 | 852 | return status; |
5ccb0066 SK |
853 | if (locks_in_grace(SVC_NET(rqstp)) && |
854 | !(cstate->save_fh.fh_export->ex_flags & NFSEXP_NOSUBTREECHECK)) | |
c815afc7 | 855 | return nfserr_grace; |
ca364317 BF |
856 | status = nfsd_rename(rqstp, &cstate->save_fh, rename->rn_sname, |
857 | rename->rn_snamelen, &cstate->current_fh, | |
1da177e4 | 858 | rename->rn_tname, rename->rn_tnamelen); |
2a6cf944 BF |
859 | if (status) |
860 | return status; | |
861 | set_change_info(&rename->rn_sinfo, &cstate->current_fh); | |
862 | set_change_info(&rename->rn_tinfo, &cstate->save_fh); | |
863 | return nfs_ok; | |
1da177e4 LT |
864 | } |
865 | ||
dcb488a3 AA |
866 | static __be32 |
867 | nfsd4_secinfo(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, | |
868 | struct nfsd4_secinfo *secinfo) | |
869 | { | |
870 | struct svc_fh resfh; | |
871 | struct svc_export *exp; | |
872 | struct dentry *dentry; | |
873 | __be32 err; | |
874 | ||
875 | fh_init(&resfh, NFS4_FHSIZE); | |
29a78a3e BF |
876 | err = fh_verify(rqstp, &cstate->current_fh, S_IFDIR, NFSD_MAY_EXEC); |
877 | if (err) | |
878 | return err; | |
dcb488a3 AA |
879 | err = nfsd_lookup_dentry(rqstp, &cstate->current_fh, |
880 | secinfo->si_name, secinfo->si_namelen, | |
881 | &exp, &dentry); | |
882 | if (err) | |
883 | return err; | |
884 | if (dentry->d_inode == NULL) { | |
885 | exp_put(exp); | |
886 | err = nfserr_noent; | |
887 | } else | |
888 | secinfo->si_exp = exp; | |
889 | dput(dentry); | |
56560b9a BF |
890 | if (cstate->minorversion) |
891 | /* See rfc 5661 section 2.6.3.1.1.8 */ | |
892 | fh_put(&cstate->current_fh); | |
dcb488a3 AA |
893 | return err; |
894 | } | |
895 | ||
04f4ad16 BF |
896 | static __be32 |
897 | nfsd4_secinfo_no_name(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, | |
898 | struct nfsd4_secinfo_no_name *sin) | |
899 | { | |
900 | __be32 err; | |
901 | ||
902 | switch (sin->sin_style) { | |
903 | case NFS4_SECINFO_STYLE4_CURRENT_FH: | |
904 | break; | |
905 | case NFS4_SECINFO_STYLE4_PARENT: | |
906 | err = nfsd4_do_lookupp(rqstp, &cstate->current_fh); | |
907 | if (err) | |
908 | return err; | |
909 | break; | |
910 | default: | |
911 | return nfserr_inval; | |
912 | } | |
bf18f163 KM |
913 | |
914 | sin->sin_exp = exp_get(cstate->current_fh.fh_export); | |
04f4ad16 BF |
915 | fh_put(&cstate->current_fh); |
916 | return nfs_ok; | |
917 | } | |
918 | ||
7191155b | 919 | static __be32 |
ca364317 BF |
920 | nfsd4_setattr(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
921 | struct nfsd4_setattr *setattr) | |
1da177e4 | 922 | { |
b37ad28b | 923 | __be32 status = nfs_ok; |
96f6f985 | 924 | int err; |
1da177e4 | 925 | |
1da177e4 | 926 | if (setattr->sa_iattr.ia_valid & ATTR_SIZE) { |
5ccb0066 | 927 | status = nfs4_preprocess_stateid_op(SVC_NET(rqstp), cstate, |
6150ef0d | 928 | &setattr->sa_stateid, WR_STATE, NULL); |
375c5547 | 929 | if (status) { |
3e3b4800 | 930 | dprintk("NFSD: nfsd4_setattr: couldn't process stateid!\n"); |
375c5547 BF |
931 | return status; |
932 | } | |
1da177e4 | 933 | } |
96f6f985 AV |
934 | err = fh_want_write(&cstate->current_fh); |
935 | if (err) | |
936 | return nfserrno(err); | |
1da177e4 | 937 | status = nfs_ok; |
3c8e0316 YZ |
938 | |
939 | status = check_attr_support(rqstp, cstate, setattr->sa_bmval, | |
940 | nfsd_attrmask); | |
941 | if (status) | |
942 | goto out; | |
943 | ||
1da177e4 | 944 | if (setattr->sa_acl != NULL) |
ca364317 BF |
945 | status = nfsd4_set_nfs4_acl(rqstp, &cstate->current_fh, |
946 | setattr->sa_acl); | |
1da177e4 | 947 | if (status) |
18f335af | 948 | goto out; |
18032ca0 DQ |
949 | if (setattr->sa_label.len) |
950 | status = nfsd4_set_nfs4_label(rqstp, &cstate->current_fh, | |
951 | &setattr->sa_label); | |
952 | if (status) | |
953 | goto out; | |
ca364317 | 954 | status = nfsd_setattr(rqstp, &cstate->current_fh, &setattr->sa_iattr, |
1da177e4 | 955 | 0, (time_t)0); |
18f335af | 956 | out: |
bad0dcff | 957 | fh_drop_write(&cstate->current_fh); |
1da177e4 LT |
958 | return status; |
959 | } | |
960 | ||
ffe1137b BF |
961 | static int fill_in_write_vector(struct kvec *vec, struct nfsd4_write *write) |
962 | { | |
963 | int i = 1; | |
964 | int buflen = write->wr_buflen; | |
965 | ||
966 | vec[0].iov_base = write->wr_head.iov_base; | |
967 | vec[0].iov_len = min_t(int, buflen, write->wr_head.iov_len); | |
968 | buflen -= vec[0].iov_len; | |
969 | ||
970 | while (buflen) { | |
971 | vec[i].iov_base = page_address(write->wr_pagelist[i - 1]); | |
972 | vec[i].iov_len = min_t(int, PAGE_SIZE, buflen); | |
973 | buflen -= vec[i].iov_len; | |
974 | i++; | |
975 | } | |
976 | return i; | |
977 | } | |
978 | ||
7191155b | 979 | static __be32 |
ca364317 BF |
980 | nfsd4_write(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
981 | struct nfsd4_write *write) | |
1da177e4 LT |
982 | { |
983 | stateid_t *stateid = &write->wr_stateid; | |
984 | struct file *filp = NULL; | |
b37ad28b | 985 | __be32 status = nfs_ok; |
31dec253 | 986 | unsigned long cnt; |
ffe1137b | 987 | int nvecs; |
1da177e4 LT |
988 | |
989 | /* no need to check permission - this will be done in nfsd_write() */ | |
990 | ||
991 | if (write->wr_offset >= OFFSET_MAX) | |
992 | return nfserr_inval; | |
993 | ||
5ccb0066 SK |
994 | status = nfs4_preprocess_stateid_op(SVC_NET(rqstp), |
995 | cstate, stateid, WR_STATE, &filp); | |
375c5547 BF |
996 | if (status) { |
997 | dprintk("NFSD: nfsd4_write: couldn't process stateid!\n"); | |
998 | return status; | |
999 | } | |
1000 | ||
31dec253 | 1001 | cnt = write->wr_buflen; |
1da177e4 | 1002 | write->wr_how_written = write->wr_stable_how; |
b9c0ef85 | 1003 | gen_boot_verifier(&write->wr_verifier, SVC_NET(rqstp)); |
1da177e4 | 1004 | |
ffe1137b BF |
1005 | nvecs = fill_in_write_vector(rqstp->rq_vec, write); |
1006 | WARN_ON_ONCE(nvecs > ARRAY_SIZE(rqstp->rq_vec)); | |
1007 | ||
ca364317 | 1008 | status = nfsd_write(rqstp, &cstate->current_fh, filp, |
ffe1137b | 1009 | write->wr_offset, rqstp->rq_vec, nvecs, |
31dec253 | 1010 | &cnt, &write->wr_how_written); |
7e06b7f9 N |
1011 | if (filp) |
1012 | fput(filp); | |
1da177e4 | 1013 | |
31dec253 DS |
1014 | write->wr_bytes_written = cnt; |
1015 | ||
1da177e4 | 1016 | return status; |
1da177e4 LT |
1017 | } |
1018 | ||
95d871f0 AS |
1019 | static __be32 |
1020 | nfsd4_fallocate(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, | |
1021 | struct nfsd4_fallocate *fallocate, int flags) | |
1022 | { | |
1023 | __be32 status = nfserr_notsupp; | |
1024 | struct file *file; | |
1025 | ||
1026 | status = nfs4_preprocess_stateid_op(SVC_NET(rqstp), cstate, | |
1027 | &fallocate->falloc_stateid, | |
1028 | WR_STATE, &file); | |
1029 | if (status != nfs_ok) { | |
1030 | dprintk("NFSD: nfsd4_fallocate: couldn't process stateid!\n"); | |
1031 | return status; | |
1032 | } | |
1033 | ||
1034 | status = nfsd4_vfs_fallocate(rqstp, &cstate->current_fh, file, | |
1035 | fallocate->falloc_offset, | |
1036 | fallocate->falloc_length, | |
1037 | flags); | |
1038 | fput(file); | |
1039 | return status; | |
1040 | } | |
1041 | ||
1042 | static __be32 | |
1043 | nfsd4_allocate(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, | |
1044 | struct nfsd4_fallocate *fallocate) | |
1045 | { | |
1046 | return nfsd4_fallocate(rqstp, cstate, fallocate, 0); | |
1047 | } | |
1048 | ||
b0cb9085 AS |
1049 | static __be32 |
1050 | nfsd4_deallocate(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, | |
1051 | struct nfsd4_fallocate *fallocate) | |
1052 | { | |
1053 | return nfsd4_fallocate(rqstp, cstate, fallocate, | |
1054 | FALLOC_FL_PUNCH_HOLE | FALLOC_FL_KEEP_SIZE); | |
1055 | } | |
1056 | ||
24bab491 AS |
1057 | static __be32 |
1058 | nfsd4_seek(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, | |
1059 | struct nfsd4_seek *seek) | |
1060 | { | |
1061 | int whence; | |
1062 | __be32 status; | |
1063 | struct file *file; | |
1064 | ||
1065 | status = nfs4_preprocess_stateid_op(SVC_NET(rqstp), cstate, | |
1066 | &seek->seek_stateid, | |
1067 | RD_STATE, &file); | |
1068 | if (status) { | |
1069 | dprintk("NFSD: nfsd4_seek: couldn't process stateid!\n"); | |
1070 | return status; | |
1071 | } | |
1072 | ||
1073 | switch (seek->seek_whence) { | |
1074 | case NFS4_CONTENT_DATA: | |
1075 | whence = SEEK_DATA; | |
1076 | break; | |
1077 | case NFS4_CONTENT_HOLE: | |
1078 | whence = SEEK_HOLE; | |
1079 | break; | |
1080 | default: | |
1081 | status = nfserr_union_notsupp; | |
1082 | goto out; | |
1083 | } | |
1084 | ||
1085 | /* | |
1086 | * Note: This call does change file->f_pos, but nothing in NFSD | |
1087 | * should ever file->f_pos. | |
1088 | */ | |
1089 | seek->seek_pos = vfs_llseek(file, seek->seek_offset, whence); | |
1090 | if (seek->seek_pos < 0) | |
1091 | status = nfserrno(seek->seek_pos); | |
1092 | else if (seek->seek_pos >= i_size_read(file_inode(file))) | |
1093 | seek->seek_eof = true; | |
1094 | ||
1095 | out: | |
1096 | fput(file); | |
1097 | return status; | |
1098 | } | |
1099 | ||
1da177e4 LT |
1100 | /* This routine never returns NFS_OK! If there are no other errors, it |
1101 | * will return NFSERR_SAME or NFSERR_NOT_SAME depending on whether the | |
1102 | * attributes matched. VERIFY is implemented by mapping NFSERR_SAME | |
1103 | * to NFS_OK after the call; NVERIFY by mapping NFSERR_NOT_SAME to NFS_OK. | |
1104 | */ | |
b37ad28b | 1105 | static __be32 |
c954e2a5 | 1106 | _nfsd4_verify(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
ca364317 | 1107 | struct nfsd4_verify *verify) |
1da177e4 | 1108 | { |
2ebbc012 | 1109 | __be32 *buf, *p; |
1da177e4 | 1110 | int count; |
b37ad28b | 1111 | __be32 status; |
1da177e4 | 1112 | |
8837abca | 1113 | status = fh_verify(rqstp, &cstate->current_fh, 0, NFSD_MAY_NOP); |
1da177e4 LT |
1114 | if (status) |
1115 | return status; | |
1116 | ||
3c8e0316 YZ |
1117 | status = check_attr_support(rqstp, cstate, verify->ve_bmval, NULL); |
1118 | if (status) | |
1119 | return status; | |
1120 | ||
1da177e4 LT |
1121 | if ((verify->ve_bmval[0] & FATTR4_WORD0_RDATTR_ERROR) |
1122 | || (verify->ve_bmval[1] & NFSD_WRITEONLY_ATTRS_WORD1)) | |
1123 | return nfserr_inval; | |
1124 | if (verify->ve_attrlen & 3) | |
1125 | return nfserr_inval; | |
1126 | ||
1127 | /* count in words: | |
1128 | * bitmap_len(1) + bitmap(2) + attr_len(1) = 4 | |
1129 | */ | |
1130 | count = 4 + (verify->ve_attrlen >> 2); | |
1131 | buf = kmalloc(count << 2, GFP_KERNEL); | |
1132 | if (!buf) | |
3e772463 | 1133 | return nfserr_jukebox; |
1da177e4 | 1134 | |
84822d0b | 1135 | p = buf; |
d5184658 | 1136 | status = nfsd4_encode_fattr_to_buf(&p, count, &cstate->current_fh, |
ca364317 | 1137 | cstate->current_fh.fh_export, |
d5184658 BF |
1138 | cstate->current_fh.fh_dentry, |
1139 | verify->ve_bmval, | |
406a7ea9 | 1140 | rqstp, 0); |
41ae6e71 BF |
1141 | /* |
1142 | * If nfsd4_encode_fattr() ran out of space, assume that's because | |
1143 | * the attributes are longer (hence different) than those given: | |
1144 | */ | |
84822d0b | 1145 | if (status == nfserr_resource) |
1da177e4 LT |
1146 | status = nfserr_not_same; |
1147 | if (status) | |
1148 | goto out_kfree; | |
1149 | ||
95ec28cd BH |
1150 | /* skip bitmap */ |
1151 | p = buf + 1 + ntohl(buf[0]); | |
1da177e4 LT |
1152 | status = nfserr_not_same; |
1153 | if (ntohl(*p++) != verify->ve_attrlen) | |
1154 | goto out_kfree; | |
1155 | if (!memcmp(p, verify->ve_attrval, verify->ve_attrlen)) | |
1156 | status = nfserr_same; | |
1157 | ||
1158 | out_kfree: | |
1159 | kfree(buf); | |
1160 | return status; | |
1161 | } | |
1162 | ||
c954e2a5 BF |
1163 | static __be32 |
1164 | nfsd4_nverify(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, | |
1165 | struct nfsd4_verify *verify) | |
1166 | { | |
1167 | __be32 status; | |
1168 | ||
1169 | status = _nfsd4_verify(rqstp, cstate, verify); | |
1170 | return status == nfserr_not_same ? nfs_ok : status; | |
1171 | } | |
1172 | ||
1173 | static __be32 | |
1174 | nfsd4_verify(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, | |
1175 | struct nfsd4_verify *verify) | |
1176 | { | |
1177 | __be32 status; | |
1178 | ||
1179 | status = _nfsd4_verify(rqstp, cstate, verify); | |
1180 | return status == nfserr_same ? nfs_ok : status; | |
1181 | } | |
1182 | ||
9cf514cc CH |
1183 | #ifdef CONFIG_NFSD_PNFS |
1184 | static const struct nfsd4_layout_ops * | |
1185 | nfsd4_layout_verify(struct svc_export *exp, unsigned int layout_type) | |
1186 | { | |
1187 | if (!exp->ex_layout_type) { | |
1188 | dprintk("%s: export does not support pNFS\n", __func__); | |
1189 | return NULL; | |
1190 | } | |
1191 | ||
1192 | if (exp->ex_layout_type != layout_type) { | |
1193 | dprintk("%s: layout type %d not supported\n", | |
1194 | __func__, layout_type); | |
1195 | return NULL; | |
1196 | } | |
1197 | ||
1198 | return nfsd4_layout_ops[layout_type]; | |
1199 | } | |
1200 | ||
1201 | static __be32 | |
1202 | nfsd4_getdeviceinfo(struct svc_rqst *rqstp, | |
1203 | struct nfsd4_compound_state *cstate, | |
1204 | struct nfsd4_getdeviceinfo *gdp) | |
1205 | { | |
1206 | const struct nfsd4_layout_ops *ops; | |
1207 | struct nfsd4_deviceid_map *map; | |
1208 | struct svc_export *exp; | |
1209 | __be32 nfserr; | |
1210 | ||
1211 | dprintk("%s: layout_type %u dev_id [0x%llx:0x%x] maxcnt %u\n", | |
1212 | __func__, | |
1213 | gdp->gd_layout_type, | |
1214 | gdp->gd_devid.fsid_idx, gdp->gd_devid.generation, | |
1215 | gdp->gd_maxcount); | |
1216 | ||
1217 | map = nfsd4_find_devid_map(gdp->gd_devid.fsid_idx); | |
1218 | if (!map) { | |
1219 | dprintk("%s: couldn't find device ID to export mapping!\n", | |
1220 | __func__); | |
1221 | return nfserr_noent; | |
1222 | } | |
1223 | ||
1224 | exp = rqst_exp_find(rqstp, map->fsid_type, map->fsid); | |
1225 | if (IS_ERR(exp)) { | |
1226 | dprintk("%s: could not find device id\n", __func__); | |
1227 | return nfserr_noent; | |
1228 | } | |
1229 | ||
1230 | nfserr = nfserr_layoutunavailable; | |
1231 | ops = nfsd4_layout_verify(exp, gdp->gd_layout_type); | |
1232 | if (!ops) | |
1233 | goto out; | |
1234 | ||
1235 | nfserr = nfs_ok; | |
1236 | if (gdp->gd_maxcount != 0) | |
1237 | nfserr = ops->proc_getdeviceinfo(exp->ex_path.mnt->mnt_sb, gdp); | |
1238 | ||
1239 | gdp->gd_notify_types &= ops->notify_types; | |
1240 | exp_put(exp); | |
1241 | out: | |
1242 | return nfserr; | |
1243 | } | |
1244 | ||
1245 | static __be32 | |
1246 | nfsd4_layoutget(struct svc_rqst *rqstp, | |
1247 | struct nfsd4_compound_state *cstate, | |
1248 | struct nfsd4_layoutget *lgp) | |
1249 | { | |
1250 | struct svc_fh *current_fh = &cstate->current_fh; | |
1251 | const struct nfsd4_layout_ops *ops; | |
1252 | struct nfs4_layout_stateid *ls; | |
1253 | __be32 nfserr; | |
1254 | int accmode; | |
1255 | ||
1256 | switch (lgp->lg_seg.iomode) { | |
1257 | case IOMODE_READ: | |
1258 | accmode = NFSD_MAY_READ; | |
1259 | break; | |
1260 | case IOMODE_RW: | |
1261 | accmode = NFSD_MAY_READ | NFSD_MAY_WRITE; | |
1262 | break; | |
1263 | default: | |
1264 | dprintk("%s: invalid iomode %d\n", | |
1265 | __func__, lgp->lg_seg.iomode); | |
1266 | nfserr = nfserr_badiomode; | |
1267 | goto out; | |
1268 | } | |
1269 | ||
1270 | nfserr = fh_verify(rqstp, current_fh, 0, accmode); | |
1271 | if (nfserr) | |
1272 | goto out; | |
1273 | ||
1274 | nfserr = nfserr_layoutunavailable; | |
1275 | ops = nfsd4_layout_verify(current_fh->fh_export, lgp->lg_layout_type); | |
1276 | if (!ops) | |
1277 | goto out; | |
1278 | ||
1279 | /* | |
1280 | * Verify minlength and range as per RFC5661: | |
1281 | * o If loga_length is less than loga_minlength, | |
1282 | * the metadata server MUST return NFS4ERR_INVAL. | |
1283 | * o If the sum of loga_offset and loga_minlength exceeds | |
1284 | * NFS4_UINT64_MAX, and loga_minlength is not | |
1285 | * NFS4_UINT64_MAX, the error NFS4ERR_INVAL MUST result. | |
1286 | * o If the sum of loga_offset and loga_length exceeds | |
1287 | * NFS4_UINT64_MAX, and loga_length is not NFS4_UINT64_MAX, | |
1288 | * the error NFS4ERR_INVAL MUST result. | |
1289 | */ | |
1290 | nfserr = nfserr_inval; | |
1291 | if (lgp->lg_seg.length < lgp->lg_minlength || | |
1292 | (lgp->lg_minlength != NFS4_MAX_UINT64 && | |
1293 | lgp->lg_minlength > NFS4_MAX_UINT64 - lgp->lg_seg.offset) || | |
1294 | (lgp->lg_seg.length != NFS4_MAX_UINT64 && | |
1295 | lgp->lg_seg.length > NFS4_MAX_UINT64 - lgp->lg_seg.offset)) | |
1296 | goto out; | |
1297 | if (lgp->lg_seg.length == 0) | |
1298 | goto out; | |
1299 | ||
1300 | nfserr = nfsd4_preprocess_layout_stateid(rqstp, cstate, &lgp->lg_sid, | |
1301 | true, lgp->lg_layout_type, &ls); | |
31ef83dc CH |
1302 | if (nfserr) { |
1303 | trace_layout_get_lookup_fail(&lgp->lg_sid); | |
9cf514cc | 1304 | goto out; |
31ef83dc | 1305 | } |
9cf514cc | 1306 | |
c5c707f9 CH |
1307 | nfserr = nfserr_recallconflict; |
1308 | if (atomic_read(&ls->ls_stid.sc_file->fi_lo_recalls)) | |
1309 | goto out_put_stid; | |
1310 | ||
9cf514cc CH |
1311 | nfserr = ops->proc_layoutget(current_fh->fh_dentry->d_inode, |
1312 | current_fh, lgp); | |
1313 | if (nfserr) | |
1314 | goto out_put_stid; | |
1315 | ||
1316 | nfserr = nfsd4_insert_layout(lgp, ls); | |
1317 | ||
1318 | out_put_stid: | |
1319 | nfs4_put_stid(&ls->ls_stid); | |
1320 | out: | |
1321 | return nfserr; | |
1322 | } | |
1323 | ||
1324 | static __be32 | |
1325 | nfsd4_layoutcommit(struct svc_rqst *rqstp, | |
1326 | struct nfsd4_compound_state *cstate, | |
1327 | struct nfsd4_layoutcommit *lcp) | |
1328 | { | |
1329 | const struct nfsd4_layout_seg *seg = &lcp->lc_seg; | |
1330 | struct svc_fh *current_fh = &cstate->current_fh; | |
1331 | const struct nfsd4_layout_ops *ops; | |
1332 | loff_t new_size = lcp->lc_last_wr + 1; | |
1333 | struct inode *inode; | |
1334 | struct nfs4_layout_stateid *ls; | |
1335 | __be32 nfserr; | |
1336 | ||
1337 | nfserr = fh_verify(rqstp, current_fh, 0, NFSD_MAY_WRITE); | |
1338 | if (nfserr) | |
1339 | goto out; | |
1340 | ||
1341 | nfserr = nfserr_layoutunavailable; | |
1342 | ops = nfsd4_layout_verify(current_fh->fh_export, lcp->lc_layout_type); | |
1343 | if (!ops) | |
1344 | goto out; | |
1345 | inode = current_fh->fh_dentry->d_inode; | |
1346 | ||
1347 | nfserr = nfserr_inval; | |
1348 | if (new_size <= seg->offset) { | |
1349 | dprintk("pnfsd: last write before layout segment\n"); | |
1350 | goto out; | |
1351 | } | |
1352 | if (new_size > seg->offset + seg->length) { | |
1353 | dprintk("pnfsd: last write beyond layout segment\n"); | |
1354 | goto out; | |
1355 | } | |
1356 | if (!lcp->lc_newoffset && new_size > i_size_read(inode)) { | |
1357 | dprintk("pnfsd: layoutcommit beyond EOF\n"); | |
1358 | goto out; | |
1359 | } | |
1360 | ||
1361 | nfserr = nfsd4_preprocess_layout_stateid(rqstp, cstate, &lcp->lc_sid, | |
1362 | false, lcp->lc_layout_type, | |
1363 | &ls); | |
1364 | if (nfserr) { | |
31ef83dc | 1365 | trace_layout_commit_lookup_fail(&lcp->lc_sid); |
9cf514cc CH |
1366 | /* fixup error code as per RFC5661 */ |
1367 | if (nfserr == nfserr_bad_stateid) | |
1368 | nfserr = nfserr_badlayout; | |
1369 | goto out; | |
1370 | } | |
1371 | ||
1372 | nfserr = ops->proc_layoutcommit(inode, lcp); | |
1373 | if (nfserr) | |
1374 | goto out_put_stid; | |
1375 | ||
1376 | if (new_size > i_size_read(inode)) { | |
1377 | lcp->lc_size_chg = 1; | |
1378 | lcp->lc_newsize = new_size; | |
1379 | } else { | |
1380 | lcp->lc_size_chg = 0; | |
1381 | } | |
1382 | ||
1383 | out_put_stid: | |
1384 | nfs4_put_stid(&ls->ls_stid); | |
1385 | out: | |
1386 | return nfserr; | |
1387 | } | |
1388 | ||
1389 | static __be32 | |
1390 | nfsd4_layoutreturn(struct svc_rqst *rqstp, | |
1391 | struct nfsd4_compound_state *cstate, | |
1392 | struct nfsd4_layoutreturn *lrp) | |
1393 | { | |
1394 | struct svc_fh *current_fh = &cstate->current_fh; | |
1395 | __be32 nfserr; | |
1396 | ||
1397 | nfserr = fh_verify(rqstp, current_fh, 0, NFSD_MAY_NOP); | |
1398 | if (nfserr) | |
1399 | goto out; | |
1400 | ||
1401 | nfserr = nfserr_layoutunavailable; | |
1402 | if (!nfsd4_layout_verify(current_fh->fh_export, lrp->lr_layout_type)) | |
1403 | goto out; | |
1404 | ||
1405 | switch (lrp->lr_seg.iomode) { | |
1406 | case IOMODE_READ: | |
1407 | case IOMODE_RW: | |
1408 | case IOMODE_ANY: | |
1409 | break; | |
1410 | default: | |
1411 | dprintk("%s: invalid iomode %d\n", __func__, | |
1412 | lrp->lr_seg.iomode); | |
1413 | nfserr = nfserr_inval; | |
1414 | goto out; | |
1415 | } | |
1416 | ||
1417 | switch (lrp->lr_return_type) { | |
1418 | case RETURN_FILE: | |
1419 | nfserr = nfsd4_return_file_layouts(rqstp, cstate, lrp); | |
1420 | break; | |
1421 | case RETURN_FSID: | |
1422 | case RETURN_ALL: | |
1423 | nfserr = nfsd4_return_client_layouts(rqstp, cstate, lrp); | |
1424 | break; | |
1425 | default: | |
1426 | dprintk("%s: invalid return_type %d\n", __func__, | |
1427 | lrp->lr_return_type); | |
1428 | nfserr = nfserr_inval; | |
1429 | break; | |
1430 | } | |
1431 | out: | |
1432 | return nfserr; | |
1433 | } | |
1434 | #endif /* CONFIG_NFSD_PNFS */ | |
1435 | ||
1da177e4 LT |
1436 | /* |
1437 | * NULL call. | |
1438 | */ | |
7111c66e | 1439 | static __be32 |
1da177e4 LT |
1440 | nfsd4_proc_null(struct svc_rqst *rqstp, void *argp, void *resp) |
1441 | { | |
1442 | return nfs_ok; | |
1443 | } | |
1444 | ||
e2b20950 SA |
1445 | static inline void nfsd4_increment_op_stats(u32 opnum) |
1446 | { | |
1447 | if (opnum >= FIRST_NFS4_OP && opnum <= LAST_NFS4_OP) | |
1448 | nfsdstats.nfs4_opcount[opnum]++; | |
1449 | } | |
1450 | ||
b591480b BF |
1451 | typedef __be32(*nfsd4op_func)(struct svc_rqst *, struct nfsd4_compound_state *, |
1452 | void *); | |
58e7b33a | 1453 | typedef u32(*nfsd4op_rsize)(struct svc_rqst *, struct nfsd4_op *op); |
8b70484c TM |
1454 | typedef void(*stateid_setter)(struct nfsd4_compound_state *, void *); |
1455 | typedef void(*stateid_getter)(struct nfsd4_compound_state *, void *); | |
58e7b33a | 1456 | |
f9bb94c4 AA |
1457 | enum nfsd4_op_flags { |
1458 | ALLOWED_WITHOUT_FH = 1 << 0, /* No current filehandle required */ | |
5ece3caf MJ |
1459 | ALLOWED_ON_ABSENT_FS = 1 << 1, /* ops processed on absent fs */ |
1460 | ALLOWED_AS_FIRST_OP = 1 << 2, /* ops reqired first in compound */ | |
68d93184 BF |
1461 | /* For rfc 5661 section 2.6.3.1.1: */ |
1462 | OP_HANDLES_WRONGSEC = 1 << 3, | |
1463 | OP_IS_PUTFH_LIKE = 1 << 4, | |
1091006c | 1464 | /* |
c856694e BF |
1465 | * These are the ops whose result size we estimate before |
1466 | * encoding, to avoid performing an op then not being able to | |
1467 | * respond or cache a response. This includes writes and setattrs | |
1468 | * as well as the operations usually called "nonidempotent": | |
1469 | */ | |
1470 | OP_MODIFIES_SOMETHING = 1 << 5, | |
1471 | /* | |
1472 | * Cache compounds containing these ops in the xid-based drc: | |
1091006c BF |
1473 | * We use the DRC for compounds containing non-idempotent |
1474 | * operations, *except* those that are 4.1-specific (since | |
1475 | * sessions provide their own EOS), and except for stateful | |
1476 | * operations other than setclientid and setclientid_confirm | |
1477 | * (since sequence numbers provide EOS for open, lock, etc in | |
1478 | * the v4.0 case). | |
1479 | */ | |
c856694e | 1480 | OP_CACHEME = 1 << 6, |
8b70484c TM |
1481 | /* |
1482 | * These are ops which clear current state id. | |
1483 | */ | |
1484 | OP_CLEAR_STATEID = 1 << 7, | |
c856694e BF |
1485 | }; |
1486 | ||
1487 | struct nfsd4_operation { | |
1488 | nfsd4op_func op_func; | |
1489 | u32 op_flags; | |
1490 | char *op_name; | |
58e7b33a MJ |
1491 | /* Try to get response size before operation */ |
1492 | nfsd4op_rsize op_rsize_bop; | |
24ff99c6 BS |
1493 | stateid_getter op_get_currentstateid; |
1494 | stateid_setter op_set_currentstateid; | |
b591480b BF |
1495 | }; |
1496 | ||
1497 | static struct nfsd4_operation nfsd4_ops[]; | |
1498 | ||
f1c7f79b | 1499 | static const char *nfsd4_op_name(unsigned opnum); |
b001a1b6 | 1500 | |
f9bb94c4 | 1501 | /* |
57716355 | 1502 | * Enforce NFSv4.1 COMPOUND ordering rules: |
f9bb94c4 | 1503 | * |
57716355 BF |
1504 | * Also note, enforced elsewhere: |
1505 | * - SEQUENCE other than as first op results in | |
1506 | * NFS4ERR_SEQUENCE_POS. (Enforced in nfsd4_sequence().) | |
1d1bc8f2 BF |
1507 | * - BIND_CONN_TO_SESSION must be the only op in its compound. |
1508 | * (Enforced in nfsd4_bind_conn_to_session().) | |
57716355 BF |
1509 | * - DESTROY_SESSION must be the final operation in a compound, if |
1510 | * sessionid's in SEQUENCE and DESTROY_SESSION are the same. | |
1511 | * (Enforced in nfsd4_destroy_session().) | |
f9bb94c4 | 1512 | */ |
57716355 | 1513 | static __be32 nfs41_check_op_ordering(struct nfsd4_compoundargs *args) |
f9bb94c4 | 1514 | { |
57716355 BF |
1515 | struct nfsd4_op *op = &args->ops[0]; |
1516 | ||
1517 | /* These ordering requirements don't apply to NFSv4.0: */ | |
1518 | if (args->minorversion == 0) | |
1519 | return nfs_ok; | |
1520 | /* This is weird, but OK, not our problem: */ | |
1521 | if (args->opcnt == 0) | |
1522 | return nfs_ok; | |
1523 | if (op->status == nfserr_op_illegal) | |
1524 | return nfs_ok; | |
1525 | if (!(nfsd4_ops[op->opnum].op_flags & ALLOWED_AS_FIRST_OP)) | |
1526 | return nfserr_op_not_in_session; | |
1527 | if (op->opnum == OP_SEQUENCE) | |
1528 | return nfs_ok; | |
1529 | if (args->opcnt != 1) | |
1530 | return nfserr_not_only_op; | |
1531 | return nfs_ok; | |
f9bb94c4 AA |
1532 | } |
1533 | ||
22b03214 BF |
1534 | static inline struct nfsd4_operation *OPDESC(struct nfsd4_op *op) |
1535 | { | |
1536 | return &nfsd4_ops[op->opnum]; | |
1537 | } | |
1538 | ||
1091006c BF |
1539 | bool nfsd4_cache_this_op(struct nfsd4_op *op) |
1540 | { | |
e372ba60 BF |
1541 | if (op->opnum == OP_ILLEGAL) |
1542 | return false; | |
c856694e | 1543 | return OPDESC(op)->op_flags & OP_CACHEME; |
1091006c BF |
1544 | } |
1545 | ||
68d93184 BF |
1546 | static bool need_wrongsec_check(struct svc_rqst *rqstp) |
1547 | { | |
1548 | struct nfsd4_compoundres *resp = rqstp->rq_resp; | |
1549 | struct nfsd4_compoundargs *argp = rqstp->rq_argp; | |
1550 | struct nfsd4_op *this = &argp->ops[resp->opcnt - 1]; | |
1551 | struct nfsd4_op *next = &argp->ops[resp->opcnt]; | |
1552 | struct nfsd4_operation *thisd; | |
1553 | struct nfsd4_operation *nextd; | |
1554 | ||
1555 | thisd = OPDESC(this); | |
1556 | /* | |
1557 | * Most ops check wronsec on our own; only the putfh-like ops | |
1558 | * have special rules. | |
1559 | */ | |
1560 | if (!(thisd->op_flags & OP_IS_PUTFH_LIKE)) | |
1561 | return false; | |
1562 | /* | |
1563 | * rfc 5661 2.6.3.1.1.6: don't bother erroring out a | |
1564 | * put-filehandle operation if we're not going to use the | |
1565 | * result: | |
1566 | */ | |
1567 | if (argp->opcnt == resp->opcnt) | |
1568 | return false; | |
51904b08 BF |
1569 | if (next->opnum == OP_ILLEGAL) |
1570 | return false; | |
68d93184 BF |
1571 | nextd = OPDESC(next); |
1572 | /* | |
1573 | * Rest of 2.6.3.1.1: certain operations will return WRONGSEC | |
1574 | * errors themselves as necessary; others should check for them | |
1575 | * now: | |
1576 | */ | |
1577 | return !(nextd->op_flags & OP_HANDLES_WRONGSEC); | |
1578 | } | |
1579 | ||
2d124dfa BF |
1580 | static void svcxdr_init_encode(struct svc_rqst *rqstp, |
1581 | struct nfsd4_compoundres *resp) | |
1582 | { | |
1583 | struct xdr_stream *xdr = &resp->xdr; | |
1584 | struct xdr_buf *buf = &rqstp->rq_res; | |
1585 | struct kvec *head = buf->head; | |
1586 | ||
1587 | xdr->buf = buf; | |
ddd1ea56 | 1588 | xdr->iov = head; |
2d124dfa | 1589 | xdr->p = head->iov_base + head->iov_len; |
a5cddc88 | 1590 | xdr->end = head->iov_base + PAGE_SIZE - rqstp->rq_auth_slack; |
6ac90391 BF |
1591 | /* Tail and page_len should be zero at this point: */ |
1592 | buf->len = buf->head[0].iov_len; | |
2825a7f9 | 1593 | xdr->scratch.iov_len = 0; |
05638dc7 | 1594 | xdr->page_ptr = buf->pages - 1; |
2825a7f9 | 1595 | buf->buflen = PAGE_SIZE * (1 + rqstp->rq_page_end - buf->pages) |
a5cddc88 | 1596 | - rqstp->rq_auth_slack; |
2d124dfa BF |
1597 | } |
1598 | ||
1da177e4 LT |
1599 | /* |
1600 | * COMPOUND call. | |
1601 | */ | |
7111c66e | 1602 | static __be32 |
1da177e4 LT |
1603 | nfsd4_proc_compound(struct svc_rqst *rqstp, |
1604 | struct nfsd4_compoundargs *args, | |
1605 | struct nfsd4_compoundres *resp) | |
1606 | { | |
1607 | struct nfsd4_op *op; | |
b591480b | 1608 | struct nfsd4_operation *opdesc; |
e354d571 | 1609 | struct nfsd4_compound_state *cstate = &resp->cstate; |
4daeed25 KM |
1610 | struct svc_fh *current_fh = &cstate->current_fh; |
1611 | struct svc_fh *save_fh = &cstate->save_fh; | |
b37ad28b | 1612 | __be32 status; |
1da177e4 | 1613 | |
2d124dfa | 1614 | svcxdr_init_encode(rqstp, resp); |
4aea24b2 | 1615 | resp->tagp = resp->xdr.p; |
1da177e4 | 1616 | /* reserve space for: taglen, tag, and opcnt */ |
d3f627c8 | 1617 | xdr_reserve_space(&resp->xdr, 8 + args->taglen); |
1da177e4 LT |
1618 | resp->taglen = args->taglen; |
1619 | resp->tag = args->tag; | |
1da177e4 | 1620 | resp->rqstp = rqstp; |
4daeed25 | 1621 | cstate->minorversion = args->minorversion; |
4daeed25 KM |
1622 | fh_init(current_fh, NFS4_FHSIZE); |
1623 | fh_init(save_fh, NFS4_FHSIZE); | |
8ff30fa4 N |
1624 | /* |
1625 | * Don't use the deferral mechanism for NFSv4; compounds make it | |
1626 | * too hard to avoid non-idempotency problems. | |
1627 | */ | |
30660e04 | 1628 | clear_bit(RQ_USEDEFERRAL, &rqstp->rq_flags); |
1da177e4 LT |
1629 | |
1630 | /* | |
1631 | * According to RFC3010, this takes precedence over all other errors. | |
1632 | */ | |
1633 | status = nfserr_minor_vers_mismatch; | |
35f7a14f | 1634 | if (nfsd_minorversion(args->minorversion, NFSD_TEST) <= 0) |
1da177e4 LT |
1635 | goto out; |
1636 | ||
57716355 BF |
1637 | status = nfs41_check_op_ordering(args); |
1638 | if (status) { | |
f9bb94c4 | 1639 | op = &args->ops[0]; |
57716355 | 1640 | op->status = status; |
f9bb94c4 AA |
1641 | goto encode_op; |
1642 | } | |
1643 | ||
1da177e4 LT |
1644 | while (!status && resp->opcnt < args->opcnt) { |
1645 | op = &args->ops[resp->opcnt++]; | |
1646 | ||
b001a1b6 BH |
1647 | dprintk("nfsv4 compound op #%d/%d: %d (%s)\n", |
1648 | resp->opcnt, args->opcnt, op->opnum, | |
1649 | nfsd4_op_name(op->opnum)); | |
1da177e4 LT |
1650 | /* |
1651 | * The XDR decode routines may have pre-set op->status; | |
1652 | * for example, if there is a miscellaneous XDR error | |
1653 | * it will be set to nfserr_bad_xdr. | |
1654 | */ | |
9d313b17 BF |
1655 | if (op->status) { |
1656 | if (op->opnum == OP_OPEN) | |
1657 | op->status = nfsd4_open_omfg(rqstp, cstate, op); | |
1da177e4 | 1658 | goto encode_op; |
9d313b17 | 1659 | } |
1da177e4 | 1660 | |
22b03214 | 1661 | opdesc = OPDESC(op); |
b591480b | 1662 | |
4daeed25 | 1663 | if (!current_fh->fh_dentry) { |
27d630ec | 1664 | if (!(opdesc->op_flags & ALLOWED_WITHOUT_FH)) { |
42ca0993 BF |
1665 | op->status = nfserr_nofilehandle; |
1666 | goto encode_op; | |
1667 | } | |
4daeed25 | 1668 | } else if (current_fh->fh_export->ex_fslocs.migrated && |
eeac294e | 1669 | !(opdesc->op_flags & ALLOWED_ON_ABSENT_FS)) { |
42ca0993 | 1670 | op->status = nfserr_moved; |
1da177e4 LT |
1671 | goto encode_op; |
1672 | } | |
b591480b | 1673 | |
2336745e KM |
1674 | fh_clear_wcc(current_fh); |
1675 | ||
58e7b33a MJ |
1676 | /* If op is non-idempotent */ |
1677 | if (opdesc->op_flags & OP_MODIFIES_SOMETHING) { | |
4c69d585 | 1678 | /* |
a8095f7e BF |
1679 | * Don't execute this op if we couldn't encode a |
1680 | * succesful reply: | |
1681 | */ | |
1682 | u32 plen = opdesc->op_rsize_bop(rqstp, op); | |
1683 | /* | |
1684 | * Plus if there's another operation, make sure | |
4c69d585 BF |
1685 | * we'll have space to at least encode an error: |
1686 | */ | |
1687 | if (resp->opcnt < args->opcnt) | |
1688 | plen += COMPOUND_ERR_SLACK_SPACE; | |
58e7b33a MJ |
1689 | op->status = nfsd4_check_resp_size(resp, plen); |
1690 | } | |
1691 | ||
1692 | if (op->status) | |
1693 | goto encode_op; | |
1694 | ||
b600de7a BF |
1695 | if (opdesc->op_get_currentstateid) |
1696 | opdesc->op_get_currentstateid(cstate, &op->u); | |
1697 | op->status = opdesc->op_func(rqstp, cstate, &op->u); | |
1da177e4 | 1698 | |
8b70484c TM |
1699 | if (!op->status) { |
1700 | if (opdesc->op_set_currentstateid) | |
1701 | opdesc->op_set_currentstateid(cstate, &op->u); | |
1702 | ||
1703 | if (opdesc->op_flags & OP_CLEAR_STATEID) | |
37c593c5 | 1704 | clear_current_stateid(cstate); |
8b70484c TM |
1705 | |
1706 | if (need_wrongsec_check(rqstp)) | |
4daeed25 | 1707 | op->status = check_nfsd_access(current_fh->fh_export, rqstp); |
8b70484c | 1708 | } |
68d93184 | 1709 | |
1da177e4 | 1710 | encode_op: |
49557cc7 | 1711 | /* Only from SEQUENCE */ |
4daeed25 | 1712 | if (cstate->status == nfserr_replay_cache) { |
da3846a2 | 1713 | dprintk("%s NFS4.1 replay from cache\n", __func__); |
abfabf8c | 1714 | status = op->status; |
da3846a2 AA |
1715 | goto out; |
1716 | } | |
a90b061c | 1717 | if (op->status == nfserr_replay_me) { |
a4f1706a | 1718 | op->replay = &cstate->replay_owner->so_replay; |
d0a381dd | 1719 | nfsd4_encode_replay(&resp->xdr, op); |
1da177e4 LT |
1720 | status = op->status = op->replay->rp_status; |
1721 | } else { | |
1722 | nfsd4_encode_operation(resp, op); | |
1723 | status = op->status; | |
1724 | } | |
0407717d BH |
1725 | |
1726 | dprintk("nfsv4 compound op %p opcnt %d #%d: %d: status %d\n", | |
1727 | args->ops, args->opcnt, resp->opcnt, op->opnum, | |
1728 | be32_to_cpu(status)); | |
1729 | ||
58fb12e6 | 1730 | nfsd4_cstate_clear_replay(cstate); |
7e06b7f9 N |
1731 | /* XXX Ugh, we need to get rid of this kind of special case: */ |
1732 | if (op->opnum == OP_READ && op->u.read.rd_filp) | |
1733 | fput(op->u.read.rd_filp); | |
e2b20950 SA |
1734 | |
1735 | nfsd4_increment_op_stats(op->opnum); | |
1da177e4 LT |
1736 | } |
1737 | ||
4daeed25 KM |
1738 | cstate->status = status; |
1739 | fh_put(current_fh); | |
1740 | fh_put(save_fh); | |
1741 | BUG_ON(cstate->replay_owner); | |
1da177e4 | 1742 | out: |
2f425878 | 1743 | /* Reset deferral mechanism for RPC deferrals */ |
30660e04 | 1744 | set_bit(RQ_USEDEFERRAL, &rqstp->rq_flags); |
3b12cd98 | 1745 | dprintk("nfsv4 compound returned %d\n", ntohl(status)); |
1da177e4 LT |
1746 | return status; |
1747 | } | |
1748 | ||
58e7b33a MJ |
1749 | #define op_encode_hdr_size (2) |
1750 | #define op_encode_stateid_maxsz (XDR_QUADLEN(NFS4_STATEID_SIZE)) | |
1751 | #define op_encode_verifier_maxsz (XDR_QUADLEN(NFS4_VERIFIER_SIZE)) | |
1752 | #define op_encode_change_info_maxsz (5) | |
1753 | #define nfs4_fattr_bitmap_maxsz (4) | |
1754 | ||
8c7424cf BF |
1755 | /* We'll fall back on returning no lockowner if run out of space: */ |
1756 | #define op_encode_lockowner_maxsz (0) | |
58e7b33a MJ |
1757 | #define op_encode_lock_denied_maxsz (8 + op_encode_lockowner_maxsz) |
1758 | ||
1759 | #define nfs4_owner_maxsz (1 + XDR_QUADLEN(IDMAP_NAMESZ)) | |
1760 | ||
1761 | #define op_encode_ace_maxsz (3 + nfs4_owner_maxsz) | |
1762 | #define op_encode_delegation_maxsz (1 + op_encode_stateid_maxsz + 1 + \ | |
1763 | op_encode_ace_maxsz) | |
1764 | ||
1765 | #define op_encode_channel_attrs_maxsz (6 + 1 + 1) | |
1766 | ||
1767 | static inline u32 nfsd4_only_status_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op) | |
1768 | { | |
1769 | return (op_encode_hdr_size) * sizeof(__be32); | |
1770 | } | |
1771 | ||
1772 | static inline u32 nfsd4_status_stateid_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op) | |
1773 | { | |
1774 | return (op_encode_hdr_size + op_encode_stateid_maxsz)* sizeof(__be32); | |
1775 | } | |
1776 | ||
1777 | static inline u32 nfsd4_commit_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op) | |
1778 | { | |
1779 | return (op_encode_hdr_size + op_encode_verifier_maxsz) * sizeof(__be32); | |
1780 | } | |
1781 | ||
1782 | static inline u32 nfsd4_create_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op) | |
1783 | { | |
1784 | return (op_encode_hdr_size + op_encode_change_info_maxsz | |
1785 | + nfs4_fattr_bitmap_maxsz) * sizeof(__be32); | |
1786 | } | |
1787 | ||
b86cef60 BF |
1788 | /* |
1789 | * Note since this is an idempotent operation we won't insist on failing | |
1790 | * the op prematurely if the estimate is too large. We may turn off splice | |
1791 | * reads unnecessarily. | |
1792 | */ | |
1793 | static inline u32 nfsd4_getattr_rsize(struct svc_rqst *rqstp, | |
1794 | struct nfsd4_op *op) | |
1795 | { | |
1796 | u32 *bmap = op->u.getattr.ga_bmval; | |
1797 | u32 bmap0 = bmap[0], bmap1 = bmap[1], bmap2 = bmap[2]; | |
1798 | u32 ret = 0; | |
1799 | ||
1800 | if (bmap0 & FATTR4_WORD0_ACL) | |
1801 | return svc_max_payload(rqstp); | |
1802 | if (bmap0 & FATTR4_WORD0_FS_LOCATIONS) | |
1803 | return svc_max_payload(rqstp); | |
1804 | ||
1805 | if (bmap1 & FATTR4_WORD1_OWNER) { | |
1806 | ret += IDMAP_NAMESZ + 4; | |
1807 | bmap1 &= ~FATTR4_WORD1_OWNER; | |
1808 | } | |
1809 | if (bmap1 & FATTR4_WORD1_OWNER_GROUP) { | |
1810 | ret += IDMAP_NAMESZ + 4; | |
1811 | bmap1 &= ~FATTR4_WORD1_OWNER_GROUP; | |
1812 | } | |
1813 | if (bmap0 & FATTR4_WORD0_FILEHANDLE) { | |
1814 | ret += NFS4_FHSIZE + 4; | |
1815 | bmap0 &= ~FATTR4_WORD0_FILEHANDLE; | |
1816 | } | |
1817 | if (bmap2 & FATTR4_WORD2_SECURITY_LABEL) { | |
1818 | ret += NFSD4_MAX_SEC_LABEL_LEN + 12; | |
1819 | bmap2 &= ~FATTR4_WORD2_SECURITY_LABEL; | |
1820 | } | |
1821 | /* | |
1822 | * Largest of remaining attributes are 16 bytes (e.g., | |
1823 | * supported_attributes) | |
1824 | */ | |
1825 | ret += 16 * (hweight32(bmap0) + hweight32(bmap1) + hweight32(bmap2)); | |
1826 | /* bitmask, length */ | |
1827 | ret += 20; | |
1828 | return ret; | |
1829 | } | |
1830 | ||
58e7b33a MJ |
1831 | static inline u32 nfsd4_link_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op) |
1832 | { | |
1833 | return (op_encode_hdr_size + op_encode_change_info_maxsz) | |
1834 | * sizeof(__be32); | |
1835 | } | |
1836 | ||
1837 | static inline u32 nfsd4_lock_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op) | |
1838 | { | |
1839 | return (op_encode_hdr_size + op_encode_lock_denied_maxsz) | |
1840 | * sizeof(__be32); | |
1841 | } | |
1842 | ||
1843 | static inline u32 nfsd4_open_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op) | |
1844 | { | |
1845 | return (op_encode_hdr_size + op_encode_stateid_maxsz | |
1846 | + op_encode_change_info_maxsz + 1 | |
1847 | + nfs4_fattr_bitmap_maxsz | |
1848 | + op_encode_delegation_maxsz) * sizeof(__be32); | |
1849 | } | |
1850 | ||
1851 | static inline u32 nfsd4_read_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op) | |
1852 | { | |
1853 | u32 maxcount = 0, rlen = 0; | |
1854 | ||
1855 | maxcount = svc_max_payload(rqstp); | |
3c7aa15d | 1856 | rlen = min(op->u.read.rd_length, maxcount); |
58e7b33a | 1857 | |
622f560e | 1858 | return (op_encode_hdr_size + 2 + XDR_QUADLEN(rlen)) * sizeof(__be32); |
58e7b33a MJ |
1859 | } |
1860 | ||
1861 | static inline u32 nfsd4_readdir_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op) | |
1862 | { | |
3c7aa15d | 1863 | u32 maxcount = 0, rlen = 0; |
58e7b33a | 1864 | |
3c7aa15d KM |
1865 | maxcount = svc_max_payload(rqstp); |
1866 | rlen = min(op->u.readdir.rd_maxcount, maxcount); | |
58e7b33a | 1867 | |
561f0ed4 BF |
1868 | return (op_encode_hdr_size + op_encode_verifier_maxsz + |
1869 | XDR_QUADLEN(rlen)) * sizeof(__be32); | |
58e7b33a MJ |
1870 | } |
1871 | ||
1872 | static inline u32 nfsd4_remove_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op) | |
1873 | { | |
1874 | return (op_encode_hdr_size + op_encode_change_info_maxsz) | |
1875 | * sizeof(__be32); | |
1876 | } | |
1877 | ||
1878 | static inline u32 nfsd4_rename_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op) | |
1879 | { | |
1880 | return (op_encode_hdr_size + op_encode_change_info_maxsz | |
1881 | + op_encode_change_info_maxsz) * sizeof(__be32); | |
1882 | } | |
1883 | ||
ccae70a9 BF |
1884 | static inline u32 nfsd4_sequence_rsize(struct svc_rqst *rqstp, |
1885 | struct nfsd4_op *op) | |
1886 | { | |
d1d84c96 BF |
1887 | return (op_encode_hdr_size |
1888 | + XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + 5) * sizeof(__be32); | |
ccae70a9 BF |
1889 | } |
1890 | ||
58e7b33a MJ |
1891 | static inline u32 nfsd4_setattr_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op) |
1892 | { | |
1893 | return (op_encode_hdr_size + nfs4_fattr_bitmap_maxsz) * sizeof(__be32); | |
1894 | } | |
1895 | ||
1896 | static inline u32 nfsd4_setclientid_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op) | |
1897 | { | |
480efaee BF |
1898 | return (op_encode_hdr_size + 2 + XDR_QUADLEN(NFS4_VERIFIER_SIZE)) * |
1899 | sizeof(__be32); | |
58e7b33a MJ |
1900 | } |
1901 | ||
1902 | static inline u32 nfsd4_write_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op) | |
1903 | { | |
f34e432b | 1904 | return (op_encode_hdr_size + 2 + op_encode_verifier_maxsz) * sizeof(__be32); |
58e7b33a MJ |
1905 | } |
1906 | ||
1907 | static inline u32 nfsd4_exchange_id_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op) | |
1908 | { | |
1909 | return (op_encode_hdr_size + 2 + 1 + /* eir_clientid, eir_sequenceid */\ | |
a8bb84bc KM |
1910 | 1 + 1 + /* eir_flags, spr_how */\ |
1911 | 4 + /* spo_must_enforce & _allow with bitmap */\ | |
58e7b33a MJ |
1912 | 2 + /*eir_server_owner.so_minor_id */\ |
1913 | /* eir_server_owner.so_major_id<> */\ | |
1914 | XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + 1 +\ | |
1915 | /* eir_server_scope<> */\ | |
1916 | XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + 1 +\ | |
1917 | 1 + /* eir_server_impl_id array length */\ | |
1918 | 0 /* ignored eir_server_impl_id contents */) * sizeof(__be32); | |
1919 | } | |
1920 | ||
1921 | static inline u32 nfsd4_bind_conn_to_session_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op) | |
1922 | { | |
1923 | return (op_encode_hdr_size + \ | |
1924 | XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + /* bctsr_sessid */\ | |
1925 | 2 /* bctsr_dir, use_conn_in_rdma_mode */) * sizeof(__be32); | |
1926 | } | |
1927 | ||
1928 | static inline u32 nfsd4_create_session_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op) | |
1929 | { | |
1930 | return (op_encode_hdr_size + \ | |
1931 | XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + /* sessionid */\ | |
1932 | 2 + /* csr_sequence, csr_flags */\ | |
1933 | op_encode_channel_attrs_maxsz + \ | |
1934 | op_encode_channel_attrs_maxsz) * sizeof(__be32); | |
1935 | } | |
1936 | ||
9cf514cc CH |
1937 | #ifdef CONFIG_NFSD_PNFS |
1938 | /* | |
1939 | * At this stage we don't really know what layout driver will handle the request, | |
1940 | * so we need to define an arbitrary upper bound here. | |
1941 | */ | |
1942 | #define MAX_LAYOUT_SIZE 128 | |
1943 | static inline u32 nfsd4_layoutget_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op) | |
1944 | { | |
1945 | return (op_encode_hdr_size + | |
1946 | 1 /* logr_return_on_close */ + | |
1947 | op_encode_stateid_maxsz + | |
1948 | 1 /* nr of layouts */ + | |
1949 | MAX_LAYOUT_SIZE) * sizeof(__be32); | |
1950 | } | |
1951 | ||
1952 | static inline u32 nfsd4_layoutcommit_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op) | |
1953 | { | |
1954 | return (op_encode_hdr_size + | |
1955 | 1 /* locr_newsize */ + | |
1956 | 2 /* ns_size */) * sizeof(__be32); | |
1957 | } | |
1958 | ||
1959 | static inline u32 nfsd4_layoutreturn_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op) | |
1960 | { | |
1961 | return (op_encode_hdr_size + | |
1962 | 1 /* lrs_stateid */ + | |
1963 | op_encode_stateid_maxsz) * sizeof(__be32); | |
1964 | } | |
1965 | #endif /* CONFIG_NFSD_PNFS */ | |
1966 | ||
20766016 | 1967 | static struct nfsd4_operation nfsd4_ops[] = { |
b591480b BF |
1968 | [OP_ACCESS] = { |
1969 | .op_func = (nfsd4op_func)nfsd4_access, | |
b001a1b6 | 1970 | .op_name = "OP_ACCESS", |
b591480b BF |
1971 | }, |
1972 | [OP_CLOSE] = { | |
1973 | .op_func = (nfsd4op_func)nfsd4_close, | |
58e7b33a | 1974 | .op_flags = OP_MODIFIES_SOMETHING, |
b001a1b6 | 1975 | .op_name = "OP_CLOSE", |
58e7b33a | 1976 | .op_rsize_bop = (nfsd4op_rsize)nfsd4_status_stateid_rsize, |
8b70484c TM |
1977 | .op_get_currentstateid = (stateid_getter)nfsd4_get_closestateid, |
1978 | .op_set_currentstateid = (stateid_setter)nfsd4_set_closestateid, | |
b591480b BF |
1979 | }, |
1980 | [OP_COMMIT] = { | |
1981 | .op_func = (nfsd4op_func)nfsd4_commit, | |
58e7b33a | 1982 | .op_flags = OP_MODIFIES_SOMETHING, |
b001a1b6 | 1983 | .op_name = "OP_COMMIT", |
58e7b33a | 1984 | .op_rsize_bop = (nfsd4op_rsize)nfsd4_commit_rsize, |
b591480b BF |
1985 | }, |
1986 | [OP_CREATE] = { | |
1987 | .op_func = (nfsd4op_func)nfsd4_create, | |
d1471053 | 1988 | .op_flags = OP_MODIFIES_SOMETHING | OP_CACHEME | OP_CLEAR_STATEID, |
b001a1b6 | 1989 | .op_name = "OP_CREATE", |
58e7b33a | 1990 | .op_rsize_bop = (nfsd4op_rsize)nfsd4_create_rsize, |
b591480b BF |
1991 | }, |
1992 | [OP_DELEGRETURN] = { | |
1993 | .op_func = (nfsd4op_func)nfsd4_delegreturn, | |
58e7b33a | 1994 | .op_flags = OP_MODIFIES_SOMETHING, |
b001a1b6 | 1995 | .op_name = "OP_DELEGRETURN", |
58e7b33a | 1996 | .op_rsize_bop = nfsd4_only_status_rsize, |
9428fe1a | 1997 | .op_get_currentstateid = (stateid_getter)nfsd4_get_delegreturnstateid, |
b591480b BF |
1998 | }, |
1999 | [OP_GETATTR] = { | |
2000 | .op_func = (nfsd4op_func)nfsd4_getattr, | |
eeac294e | 2001 | .op_flags = ALLOWED_ON_ABSENT_FS, |
b86cef60 | 2002 | .op_rsize_bop = nfsd4_getattr_rsize, |
b001a1b6 | 2003 | .op_name = "OP_GETATTR", |
b591480b BF |
2004 | }, |
2005 | [OP_GETFH] = { | |
2006 | .op_func = (nfsd4op_func)nfsd4_getfh, | |
b001a1b6 | 2007 | .op_name = "OP_GETFH", |
b591480b BF |
2008 | }, |
2009 | [OP_LINK] = { | |
2010 | .op_func = (nfsd4op_func)nfsd4_link, | |
c856694e BF |
2011 | .op_flags = ALLOWED_ON_ABSENT_FS | OP_MODIFIES_SOMETHING |
2012 | | OP_CACHEME, | |
b001a1b6 | 2013 | .op_name = "OP_LINK", |
58e7b33a | 2014 | .op_rsize_bop = (nfsd4op_rsize)nfsd4_link_rsize, |
b591480b BF |
2015 | }, |
2016 | [OP_LOCK] = { | |
2017 | .op_func = (nfsd4op_func)nfsd4_lock, | |
58e7b33a | 2018 | .op_flags = OP_MODIFIES_SOMETHING, |
b001a1b6 | 2019 | .op_name = "OP_LOCK", |
58e7b33a | 2020 | .op_rsize_bop = (nfsd4op_rsize)nfsd4_lock_rsize, |
62cd4a59 | 2021 | .op_set_currentstateid = (stateid_setter)nfsd4_set_lockstateid, |
b591480b BF |
2022 | }, |
2023 | [OP_LOCKT] = { | |
2024 | .op_func = (nfsd4op_func)nfsd4_lockt, | |
b001a1b6 | 2025 | .op_name = "OP_LOCKT", |
b591480b BF |
2026 | }, |
2027 | [OP_LOCKU] = { | |
2028 | .op_func = (nfsd4op_func)nfsd4_locku, | |
58e7b33a | 2029 | .op_flags = OP_MODIFIES_SOMETHING, |
b001a1b6 | 2030 | .op_name = "OP_LOCKU", |
58e7b33a | 2031 | .op_rsize_bop = (nfsd4op_rsize)nfsd4_status_stateid_rsize, |
62cd4a59 | 2032 | .op_get_currentstateid = (stateid_getter)nfsd4_get_lockustateid, |
b591480b BF |
2033 | }, |
2034 | [OP_LOOKUP] = { | |
2035 | .op_func = (nfsd4op_func)nfsd4_lookup, | |
d1471053 | 2036 | .op_flags = OP_HANDLES_WRONGSEC | OP_CLEAR_STATEID, |
b001a1b6 | 2037 | .op_name = "OP_LOOKUP", |
b591480b BF |
2038 | }, |
2039 | [OP_LOOKUPP] = { | |
2040 | .op_func = (nfsd4op_func)nfsd4_lookupp, | |
d1471053 | 2041 | .op_flags = OP_HANDLES_WRONGSEC | OP_CLEAR_STATEID, |
b001a1b6 | 2042 | .op_name = "OP_LOOKUPP", |
b591480b BF |
2043 | }, |
2044 | [OP_NVERIFY] = { | |
2045 | .op_func = (nfsd4op_func)nfsd4_nverify, | |
b001a1b6 | 2046 | .op_name = "OP_NVERIFY", |
b591480b BF |
2047 | }, |
2048 | [OP_OPEN] = { | |
2049 | .op_func = (nfsd4op_func)nfsd4_open, | |
58e7b33a | 2050 | .op_flags = OP_HANDLES_WRONGSEC | OP_MODIFIES_SOMETHING, |
b001a1b6 | 2051 | .op_name = "OP_OPEN", |
58e7b33a | 2052 | .op_rsize_bop = (nfsd4op_rsize)nfsd4_open_rsize, |
8b70484c | 2053 | .op_set_currentstateid = (stateid_setter)nfsd4_set_openstateid, |
b591480b BF |
2054 | }, |
2055 | [OP_OPEN_CONFIRM] = { | |
2056 | .op_func = (nfsd4op_func)nfsd4_open_confirm, | |
58e7b33a | 2057 | .op_flags = OP_MODIFIES_SOMETHING, |
b001a1b6 | 2058 | .op_name = "OP_OPEN_CONFIRM", |
58e7b33a | 2059 | .op_rsize_bop = (nfsd4op_rsize)nfsd4_status_stateid_rsize, |
b591480b BF |
2060 | }, |
2061 | [OP_OPEN_DOWNGRADE] = { | |
2062 | .op_func = (nfsd4op_func)nfsd4_open_downgrade, | |
58e7b33a | 2063 | .op_flags = OP_MODIFIES_SOMETHING, |
b001a1b6 | 2064 | .op_name = "OP_OPEN_DOWNGRADE", |
58e7b33a | 2065 | .op_rsize_bop = (nfsd4op_rsize)nfsd4_status_stateid_rsize, |
9428fe1a TM |
2066 | .op_get_currentstateid = (stateid_getter)nfsd4_get_opendowngradestateid, |
2067 | .op_set_currentstateid = (stateid_setter)nfsd4_set_opendowngradestateid, | |
b591480b BF |
2068 | }, |
2069 | [OP_PUTFH] = { | |
2070 | .op_func = (nfsd4op_func)nfsd4_putfh, | |
68d93184 | 2071 | .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS |
5b648699 | 2072 | | OP_IS_PUTFH_LIKE | OP_CLEAR_STATEID, |
b001a1b6 | 2073 | .op_name = "OP_PUTFH", |
58e7b33a | 2074 | .op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize, |
b591480b | 2075 | }, |
eeac294e | 2076 | [OP_PUTPUBFH] = { |
a1c8c4d1 | 2077 | .op_func = (nfsd4op_func)nfsd4_putrootfh, |
68d93184 | 2078 | .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS |
5b648699 | 2079 | | OP_IS_PUTFH_LIKE | OP_CLEAR_STATEID, |
b001a1b6 | 2080 | .op_name = "OP_PUTPUBFH", |
58e7b33a | 2081 | .op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize, |
eeac294e | 2082 | }, |
b591480b BF |
2083 | [OP_PUTROOTFH] = { |
2084 | .op_func = (nfsd4op_func)nfsd4_putrootfh, | |
68d93184 | 2085 | .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS |
5b648699 | 2086 | | OP_IS_PUTFH_LIKE | OP_CLEAR_STATEID, |
b001a1b6 | 2087 | .op_name = "OP_PUTROOTFH", |
58e7b33a | 2088 | .op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize, |
b591480b BF |
2089 | }, |
2090 | [OP_READ] = { | |
2091 | .op_func = (nfsd4op_func)nfsd4_read, | |
b001a1b6 | 2092 | .op_name = "OP_READ", |
58e7b33a | 2093 | .op_rsize_bop = (nfsd4op_rsize)nfsd4_read_rsize, |
30813e27 | 2094 | .op_get_currentstateid = (stateid_getter)nfsd4_get_readstateid, |
b591480b BF |
2095 | }, |
2096 | [OP_READDIR] = { | |
2097 | .op_func = (nfsd4op_func)nfsd4_readdir, | |
b001a1b6 | 2098 | .op_name = "OP_READDIR", |
58e7b33a | 2099 | .op_rsize_bop = (nfsd4op_rsize)nfsd4_readdir_rsize, |
b591480b BF |
2100 | }, |
2101 | [OP_READLINK] = { | |
2102 | .op_func = (nfsd4op_func)nfsd4_readlink, | |
b001a1b6 | 2103 | .op_name = "OP_READLINK", |
b591480b BF |
2104 | }, |
2105 | [OP_REMOVE] = { | |
2106 | .op_func = (nfsd4op_func)nfsd4_remove, | |
c856694e | 2107 | .op_flags = OP_MODIFIES_SOMETHING | OP_CACHEME, |
b001a1b6 | 2108 | .op_name = "OP_REMOVE", |
58e7b33a | 2109 | .op_rsize_bop = (nfsd4op_rsize)nfsd4_remove_rsize, |
b591480b BF |
2110 | }, |
2111 | [OP_RENAME] = { | |
2112 | .op_func = (nfsd4op_func)nfsd4_rename, | |
c856694e | 2113 | .op_flags = OP_MODIFIES_SOMETHING | OP_CACHEME, |
58e7b33a | 2114 | .op_name = "OP_RENAME", |
58e7b33a | 2115 | .op_rsize_bop = (nfsd4op_rsize)nfsd4_rename_rsize, |
b591480b BF |
2116 | }, |
2117 | [OP_RENEW] = { | |
2118 | .op_func = (nfsd4op_func)nfsd4_renew, | |
58e7b33a MJ |
2119 | .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS |
2120 | | OP_MODIFIES_SOMETHING, | |
b001a1b6 | 2121 | .op_name = "OP_RENEW", |
58e7b33a MJ |
2122 | .op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize, |
2123 | ||
b591480b BF |
2124 | }, |
2125 | [OP_RESTOREFH] = { | |
2126 | .op_func = (nfsd4op_func)nfsd4_restorefh, | |
68d93184 | 2127 | .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS |
58e7b33a | 2128 | | OP_IS_PUTFH_LIKE | OP_MODIFIES_SOMETHING, |
b001a1b6 | 2129 | .op_name = "OP_RESTOREFH", |
58e7b33a | 2130 | .op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize, |
b591480b BF |
2131 | }, |
2132 | [OP_SAVEFH] = { | |
2133 | .op_func = (nfsd4op_func)nfsd4_savefh, | |
58e7b33a | 2134 | .op_flags = OP_HANDLES_WRONGSEC | OP_MODIFIES_SOMETHING, |
b001a1b6 | 2135 | .op_name = "OP_SAVEFH", |
58e7b33a | 2136 | .op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize, |
b591480b | 2137 | }, |
dcb488a3 AA |
2138 | [OP_SECINFO] = { |
2139 | .op_func = (nfsd4op_func)nfsd4_secinfo, | |
68d93184 | 2140 | .op_flags = OP_HANDLES_WRONGSEC, |
b001a1b6 | 2141 | .op_name = "OP_SECINFO", |
dcb488a3 | 2142 | }, |
b591480b BF |
2143 | [OP_SETATTR] = { |
2144 | .op_func = (nfsd4op_func)nfsd4_setattr, | |
b001a1b6 | 2145 | .op_name = "OP_SETATTR", |
c856694e | 2146 | .op_flags = OP_MODIFIES_SOMETHING | OP_CACHEME, |
58e7b33a | 2147 | .op_rsize_bop = (nfsd4op_rsize)nfsd4_setattr_rsize, |
1e97b519 | 2148 | .op_get_currentstateid = (stateid_getter)nfsd4_get_setattrstateid, |
b591480b BF |
2149 | }, |
2150 | [OP_SETCLIENTID] = { | |
2151 | .op_func = (nfsd4op_func)nfsd4_setclientid, | |
58e7b33a | 2152 | .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS |
c856694e | 2153 | | OP_MODIFIES_SOMETHING | OP_CACHEME, |
b001a1b6 | 2154 | .op_name = "OP_SETCLIENTID", |
58e7b33a | 2155 | .op_rsize_bop = (nfsd4op_rsize)nfsd4_setclientid_rsize, |
b591480b BF |
2156 | }, |
2157 | [OP_SETCLIENTID_CONFIRM] = { | |
2158 | .op_func = (nfsd4op_func)nfsd4_setclientid_confirm, | |
58e7b33a | 2159 | .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS |
c856694e | 2160 | | OP_MODIFIES_SOMETHING | OP_CACHEME, |
b001a1b6 | 2161 | .op_name = "OP_SETCLIENTID_CONFIRM", |
58e7b33a | 2162 | .op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize, |
b591480b BF |
2163 | }, |
2164 | [OP_VERIFY] = { | |
2165 | .op_func = (nfsd4op_func)nfsd4_verify, | |
b001a1b6 | 2166 | .op_name = "OP_VERIFY", |
b591480b BF |
2167 | }, |
2168 | [OP_WRITE] = { | |
2169 | .op_func = (nfsd4op_func)nfsd4_write, | |
c856694e | 2170 | .op_flags = OP_MODIFIES_SOMETHING | OP_CACHEME, |
b001a1b6 | 2171 | .op_name = "OP_WRITE", |
58e7b33a | 2172 | .op_rsize_bop = (nfsd4op_rsize)nfsd4_write_rsize, |
30813e27 | 2173 | .op_get_currentstateid = (stateid_getter)nfsd4_get_writestateid, |
b591480b BF |
2174 | }, |
2175 | [OP_RELEASE_LOCKOWNER] = { | |
2176 | .op_func = (nfsd4op_func)nfsd4_release_lockowner, | |
58e7b33a MJ |
2177 | .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS |
2178 | | OP_MODIFIES_SOMETHING, | |
b001a1b6 | 2179 | .op_name = "OP_RELEASE_LOCKOWNER", |
58e7b33a | 2180 | .op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize, |
b591480b | 2181 | }, |
069b6ad4 AA |
2182 | |
2183 | /* NFSv4.1 operations */ | |
2184 | [OP_EXCHANGE_ID] = { | |
2185 | .op_func = (nfsd4op_func)nfsd4_exchange_id, | |
58e7b33a MJ |
2186 | .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP |
2187 | | OP_MODIFIES_SOMETHING, | |
069b6ad4 | 2188 | .op_name = "OP_EXCHANGE_ID", |
58e7b33a | 2189 | .op_rsize_bop = (nfsd4op_rsize)nfsd4_exchange_id_rsize, |
069b6ad4 | 2190 | }, |
cb73a9f4 BF |
2191 | [OP_BACKCHANNEL_CTL] = { |
2192 | .op_func = (nfsd4op_func)nfsd4_backchannel_ctl, | |
2193 | .op_flags = ALLOWED_WITHOUT_FH | OP_MODIFIES_SOMETHING, | |
2194 | .op_name = "OP_BACKCHANNEL_CTL", | |
2195 | .op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize, | |
2196 | }, | |
1d1bc8f2 BF |
2197 | [OP_BIND_CONN_TO_SESSION] = { |
2198 | .op_func = (nfsd4op_func)nfsd4_bind_conn_to_session, | |
58e7b33a MJ |
2199 | .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP |
2200 | | OP_MODIFIES_SOMETHING, | |
1d1bc8f2 | 2201 | .op_name = "OP_BIND_CONN_TO_SESSION", |
58e7b33a | 2202 | .op_rsize_bop = (nfsd4op_rsize)nfsd4_bind_conn_to_session_rsize, |
1d1bc8f2 | 2203 | }, |
069b6ad4 AA |
2204 | [OP_CREATE_SESSION] = { |
2205 | .op_func = (nfsd4op_func)nfsd4_create_session, | |
58e7b33a MJ |
2206 | .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP |
2207 | | OP_MODIFIES_SOMETHING, | |
069b6ad4 | 2208 | .op_name = "OP_CREATE_SESSION", |
58e7b33a | 2209 | .op_rsize_bop = (nfsd4op_rsize)nfsd4_create_session_rsize, |
069b6ad4 AA |
2210 | }, |
2211 | [OP_DESTROY_SESSION] = { | |
2212 | .op_func = (nfsd4op_func)nfsd4_destroy_session, | |
58e7b33a MJ |
2213 | .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP |
2214 | | OP_MODIFIES_SOMETHING, | |
069b6ad4 | 2215 | .op_name = "OP_DESTROY_SESSION", |
58e7b33a | 2216 | .op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize, |
069b6ad4 AA |
2217 | }, |
2218 | [OP_SEQUENCE] = { | |
2219 | .op_func = (nfsd4op_func)nfsd4_sequence, | |
f9bb94c4 | 2220 | .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP, |
069b6ad4 | 2221 | .op_name = "OP_SEQUENCE", |
d1d84c96 | 2222 | .op_rsize_bop = (nfsd4op_rsize)nfsd4_sequence_rsize, |
069b6ad4 | 2223 | }, |
094b5d74 | 2224 | [OP_DESTROY_CLIENTID] = { |
345c2842 | 2225 | .op_func = (nfsd4op_func)nfsd4_destroy_clientid, |
58e7b33a MJ |
2226 | .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP |
2227 | | OP_MODIFIES_SOMETHING, | |
094b5d74 | 2228 | .op_name = "OP_DESTROY_CLIENTID", |
58e7b33a | 2229 | .op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize, |
094b5d74 | 2230 | }, |
4dc6ec00 BF |
2231 | [OP_RECLAIM_COMPLETE] = { |
2232 | .op_func = (nfsd4op_func)nfsd4_reclaim_complete, | |
58e7b33a | 2233 | .op_flags = ALLOWED_WITHOUT_FH | OP_MODIFIES_SOMETHING, |
4dc6ec00 | 2234 | .op_name = "OP_RECLAIM_COMPLETE", |
58e7b33a | 2235 | .op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize, |
4dc6ec00 | 2236 | }, |
04f4ad16 BF |
2237 | [OP_SECINFO_NO_NAME] = { |
2238 | .op_func = (nfsd4op_func)nfsd4_secinfo_no_name, | |
68d93184 | 2239 | .op_flags = OP_HANDLES_WRONGSEC, |
04f4ad16 BF |
2240 | .op_name = "OP_SECINFO_NO_NAME", |
2241 | }, | |
17456804 BS |
2242 | [OP_TEST_STATEID] = { |
2243 | .op_func = (nfsd4op_func)nfsd4_test_stateid, | |
2244 | .op_flags = ALLOWED_WITHOUT_FH, | |
2245 | .op_name = "OP_TEST_STATEID", | |
2246 | }, | |
e1ca12df BS |
2247 | [OP_FREE_STATEID] = { |
2248 | .op_func = (nfsd4op_func)nfsd4_free_stateid, | |
58e7b33a | 2249 | .op_flags = ALLOWED_WITHOUT_FH | OP_MODIFIES_SOMETHING, |
e1ca12df | 2250 | .op_name = "OP_FREE_STATEID", |
a1dc6955 | 2251 | .op_get_currentstateid = (stateid_getter)nfsd4_get_freestateid, |
58e7b33a | 2252 | .op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize, |
e1ca12df | 2253 | }, |
9cf514cc CH |
2254 | #ifdef CONFIG_NFSD_PNFS |
2255 | [OP_GETDEVICEINFO] = { | |
2256 | .op_func = (nfsd4op_func)nfsd4_getdeviceinfo, | |
2257 | .op_flags = ALLOWED_WITHOUT_FH, | |
2258 | .op_name = "OP_GETDEVICEINFO", | |
2259 | }, | |
2260 | [OP_LAYOUTGET] = { | |
2261 | .op_func = (nfsd4op_func)nfsd4_layoutget, | |
2262 | .op_flags = OP_MODIFIES_SOMETHING, | |
2263 | .op_name = "OP_LAYOUTGET", | |
2264 | .op_rsize_bop = (nfsd4op_rsize)nfsd4_layoutget_rsize, | |
2265 | }, | |
2266 | [OP_LAYOUTCOMMIT] = { | |
2267 | .op_func = (nfsd4op_func)nfsd4_layoutcommit, | |
2268 | .op_flags = OP_MODIFIES_SOMETHING, | |
2269 | .op_name = "OP_LAYOUTCOMMIT", | |
2270 | .op_rsize_bop = (nfsd4op_rsize)nfsd4_layoutcommit_rsize, | |
2271 | }, | |
2272 | [OP_LAYOUTRETURN] = { | |
2273 | .op_func = (nfsd4op_func)nfsd4_layoutreturn, | |
2274 | .op_flags = OP_MODIFIES_SOMETHING, | |
2275 | .op_name = "OP_LAYOUTRETURN", | |
2276 | .op_rsize_bop = (nfsd4op_rsize)nfsd4_layoutreturn_rsize, | |
2277 | }, | |
2278 | #endif /* CONFIG_NFSD_PNFS */ | |
24bab491 AS |
2279 | |
2280 | /* NFSv4.2 operations */ | |
95d871f0 AS |
2281 | [OP_ALLOCATE] = { |
2282 | .op_func = (nfsd4op_func)nfsd4_allocate, | |
2283 | .op_flags = OP_MODIFIES_SOMETHING | OP_CACHEME, | |
2284 | .op_name = "OP_ALLOCATE", | |
2285 | .op_rsize_bop = (nfsd4op_rsize)nfsd4_write_rsize, | |
2286 | }, | |
b0cb9085 AS |
2287 | [OP_DEALLOCATE] = { |
2288 | .op_func = (nfsd4op_func)nfsd4_deallocate, | |
2289 | .op_flags = OP_MODIFIES_SOMETHING | OP_CACHEME, | |
2290 | .op_name = "OP_DEALLOCATE", | |
2291 | .op_rsize_bop = (nfsd4op_rsize)nfsd4_write_rsize, | |
2292 | }, | |
24bab491 AS |
2293 | [OP_SEEK] = { |
2294 | .op_func = (nfsd4op_func)nfsd4_seek, | |
2295 | .op_name = "OP_SEEK", | |
2296 | }, | |
b591480b BF |
2297 | }; |
2298 | ||
4f0cefbf BF |
2299 | int nfsd4_max_reply(struct svc_rqst *rqstp, struct nfsd4_op *op) |
2300 | { | |
2301 | struct nfsd4_operation *opdesc; | |
2302 | nfsd4op_rsize estimator; | |
2303 | ||
2304 | if (op->opnum == OP_ILLEGAL) | |
2305 | return op_encode_hdr_size * sizeof(__be32); | |
2306 | opdesc = OPDESC(op); | |
2307 | estimator = opdesc->op_rsize_bop; | |
2308 | return estimator ? estimator(rqstp, op) : PAGE_SIZE; | |
2309 | } | |
2310 | ||
07d1f802 BF |
2311 | void warn_on_nonidempotent_op(struct nfsd4_op *op) |
2312 | { | |
2313 | if (OPDESC(op)->op_flags & OP_MODIFIES_SOMETHING) { | |
2314 | pr_err("unable to encode reply to nonidempotent op %d (%s)\n", | |
2315 | op->opnum, nfsd4_op_name(op->opnum)); | |
2316 | WARN_ON_ONCE(1); | |
2317 | } | |
2318 | } | |
2319 | ||
f1c7f79b | 2320 | static const char *nfsd4_op_name(unsigned opnum) |
b001a1b6 BH |
2321 | { |
2322 | if (opnum < ARRAY_SIZE(nfsd4_ops)) | |
2323 | return nfsd4_ops[opnum].op_name; | |
2324 | return "unknown_operation"; | |
2325 | } | |
2326 | ||
1da177e4 | 2327 | #define nfsd4_voidres nfsd4_voidargs |
1da177e4 LT |
2328 | struct nfsd4_voidargs { int dummy; }; |
2329 | ||
1da177e4 | 2330 | static struct svc_procedure nfsd_procedures4[2] = { |
0a93a47f YZ |
2331 | [NFSPROC4_NULL] = { |
2332 | .pc_func = (svc_procfunc) nfsd4_proc_null, | |
2333 | .pc_encode = (kxdrproc_t) nfs4svc_encode_voidres, | |
2334 | .pc_argsize = sizeof(struct nfsd4_voidargs), | |
2335 | .pc_ressize = sizeof(struct nfsd4_voidres), | |
2336 | .pc_cachetype = RC_NOCACHE, | |
2337 | .pc_xdrressize = 1, | |
2338 | }, | |
2339 | [NFSPROC4_COMPOUND] = { | |
2340 | .pc_func = (svc_procfunc) nfsd4_proc_compound, | |
2341 | .pc_decode = (kxdrproc_t) nfs4svc_decode_compoundargs, | |
2342 | .pc_encode = (kxdrproc_t) nfs4svc_encode_compoundres, | |
2343 | .pc_argsize = sizeof(struct nfsd4_compoundargs), | |
2344 | .pc_ressize = sizeof(struct nfsd4_compoundres), | |
3e98abff | 2345 | .pc_release = nfsd4_release_compoundargs, |
0a93a47f YZ |
2346 | .pc_cachetype = RC_NOCACHE, |
2347 | .pc_xdrressize = NFSD_BUFSIZE/4, | |
2348 | }, | |
1da177e4 LT |
2349 | }; |
2350 | ||
2351 | struct svc_version nfsd_version4 = { | |
2352 | .vs_vers = 4, | |
2353 | .vs_nproc = 2, | |
2354 | .vs_proc = nfsd_procedures4, | |
2355 | .vs_dispatch = nfsd_dispatch, | |
2356 | .vs_xdrsize = NFS4_SVC_XDRSIZE, | |
7e55b59b | 2357 | .vs_rpcb_optnl = 1, |
1da177e4 LT |
2358 | }; |
2359 | ||
2360 | /* | |
2361 | * Local variables: | |
2362 | * c-basic-offset: 8 | |
2363 | * End: | |
2364 | */ |