This source file includes following definitions.
- nfsd4_security_inode_setsecctx
- nfsd4_security_inode_setsecctx
- check_attr_support
- nfsd4_check_open_attributes
- is_create_with_attrs
- do_set_nfs4_acl
- fh_dup2
- do_open_permission
- nfsd_check_obj_isreg
- nfsd4_set_open_owner_reply_cache
- do_open_lookup
- do_open_fhandle
- copy_clientid
- nfsd4_open
- nfsd4_open_omfg
- nfsd4_getfh
- nfsd4_putfh
- nfsd4_putrootfh
- nfsd4_restorefh
- nfsd4_savefh
- nfsd4_access
- gen_boot_verifier
- nfsd4_commit
- nfsd4_create
- nfsd4_getattr
- nfsd4_link
- nfsd4_do_lookupp
- nfsd4_lookupp
- nfsd4_lookup
- nfsd4_read
- nfsd4_read_release
- nfsd4_readdir
- nfsd4_readlink
- nfsd4_remove
- nfsd4_rename
- nfsd4_secinfo
- nfsd4_secinfo_no_name
- nfsd4_secinfo_release
- nfsd4_secinfo_no_name_release
- nfsd4_setattr
- nfsd4_write
- nfsd4_verify_copy
- nfsd4_clone
- nfs4_put_copy
- check_and_set_stop_copy
- nfsd4_stop_copy
- nfsd4_get_copy
- nfsd4_shutdown_copy
- nfsd4_cb_offload_release
- nfsd4_cb_offload_done
- nfsd4_init_copy_res
- _nfsd_copy_file_range
- nfsd4_do_copy
- dup_copy_fields
- cleanup_async_copy
- nfsd4_do_async_copy
- nfsd4_copy
- find_async_copy
- nfsd4_offload_cancel
- nfsd4_fallocate
- nfsd4_offload_status
- nfsd4_allocate
- nfsd4_deallocate
- nfsd4_seek
- _nfsd4_verify
- nfsd4_nverify
- nfsd4_verify
- nfsd4_layout_verify
- nfsd4_getdeviceinfo
- nfsd4_getdeviceinfo_release
- nfsd4_layoutget
- nfsd4_layoutget_release
- nfsd4_layoutcommit
- nfsd4_layoutreturn
- nfsd4_proc_null
- nfsd4_increment_op_stats
- nfs41_check_op_ordering
- OPDESC
- nfsd4_cache_this_op
- need_wrongsec_check
- svcxdr_init_encode
- nfsd4_proc_compound
- nfsd4_only_status_rsize
- nfsd4_status_stateid_rsize
- nfsd4_access_rsize
- nfsd4_commit_rsize
- nfsd4_create_rsize
- nfsd4_getattr_rsize
- nfsd4_getfh_rsize
- nfsd4_link_rsize
- nfsd4_lock_rsize
- nfsd4_open_rsize
- nfsd4_read_rsize
- nfsd4_readdir_rsize
- nfsd4_readlink_rsize
- nfsd4_remove_rsize
- nfsd4_rename_rsize
- nfsd4_sequence_rsize
- nfsd4_test_stateid_rsize
- nfsd4_setattr_rsize
- nfsd4_secinfo_rsize
- nfsd4_setclientid_rsize
- nfsd4_write_rsize
- nfsd4_exchange_id_rsize
- nfsd4_bind_conn_to_session_rsize
- nfsd4_create_session_rsize
- nfsd4_copy_rsize
- nfsd4_offload_status_rsize
- nfsd4_getdeviceinfo_rsize
- nfsd4_layoutget_rsize
- nfsd4_layoutcommit_rsize
- nfsd4_layoutreturn_rsize
- nfsd4_seek_rsize
- nfsd4_spo_must_allow
- nfsd4_max_reply
- warn_on_nonidempotent_op
- nfsd4_op_name
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35 #include <linux/fs_struct.h>
36 #include <linux/file.h>
37 #include <linux/falloc.h>
38 #include <linux/slab.h>
39 #include <linux/kthread.h>
40
41 #include "idmap.h"
42 #include "cache.h"
43 #include "xdr4.h"
44 #include "vfs.h"
45 #include "current_stateid.h"
46 #include "netns.h"
47 #include "acl.h"
48 #include "pnfs.h"
49 #include "trace.h"
50
51 #ifdef CONFIG_NFSD_V4_SECURITY_LABEL
52 #include <linux/security.h>
53
54 static inline void
55 nfsd4_security_inode_setsecctx(struct svc_fh *resfh, struct xdr_netobj *label, u32 *bmval)
56 {
57 struct inode *inode = d_inode(resfh->fh_dentry);
58 int status;
59
60 inode_lock(inode);
61 status = security_inode_setsecctx(resfh->fh_dentry,
62 label->data, label->len);
63 inode_unlock(inode);
64
65 if (status)
66
67
68
69
70
71 bmval[2] &= ~FATTR4_WORD2_SECURITY_LABEL;
72
73 return;
74 }
75 #else
76 static inline void
77 nfsd4_security_inode_setsecctx(struct svc_fh *resfh, struct xdr_netobj *label, u32 *bmval)
78 { }
79 #endif
80
81 #define NFSDDBG_FACILITY NFSDDBG_PROC
82
83 static u32 nfsd_attrmask[] = {
84 NFSD_WRITEABLE_ATTRS_WORD0,
85 NFSD_WRITEABLE_ATTRS_WORD1,
86 NFSD_WRITEABLE_ATTRS_WORD2
87 };
88
89 static u32 nfsd41_ex_attrmask[] = {
90 NFSD_SUPPATTR_EXCLCREAT_WORD0,
91 NFSD_SUPPATTR_EXCLCREAT_WORD1,
92 NFSD_SUPPATTR_EXCLCREAT_WORD2
93 };
94
95 static __be32
96 check_attr_support(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
97 u32 *bmval, u32 *writable)
98 {
99 struct dentry *dentry = cstate->current_fh.fh_dentry;
100 struct svc_export *exp = cstate->current_fh.fh_export;
101
102 if (!nfsd_attrs_supported(cstate->minorversion, bmval))
103 return nfserr_attrnotsupp;
104 if ((bmval[0] & FATTR4_WORD0_ACL) && !IS_POSIXACL(d_inode(dentry)))
105 return nfserr_attrnotsupp;
106 if ((bmval[2] & FATTR4_WORD2_SECURITY_LABEL) &&
107 !(exp->ex_flags & NFSEXP_SECURITY_LABEL))
108 return nfserr_attrnotsupp;
109 if (writable && !bmval_is_subset(bmval, writable))
110 return nfserr_inval;
111 if (writable && (bmval[2] & FATTR4_WORD2_MODE_UMASK) &&
112 (bmval[1] & FATTR4_WORD1_MODE))
113 return nfserr_inval;
114 return nfs_ok;
115 }
116
117 static __be32
118 nfsd4_check_open_attributes(struct svc_rqst *rqstp,
119 struct nfsd4_compound_state *cstate, struct nfsd4_open *open)
120 {
121 __be32 status = nfs_ok;
122
123 if (open->op_create == NFS4_OPEN_CREATE) {
124 if (open->op_createmode == NFS4_CREATE_UNCHECKED
125 || open->op_createmode == NFS4_CREATE_GUARDED)
126 status = check_attr_support(rqstp, cstate,
127 open->op_bmval, nfsd_attrmask);
128 else if (open->op_createmode == NFS4_CREATE_EXCLUSIVE4_1)
129 status = check_attr_support(rqstp, cstate,
130 open->op_bmval, nfsd41_ex_attrmask);
131 }
132
133 return status;
134 }
135
136 static int
137 is_create_with_attrs(struct nfsd4_open *open)
138 {
139 return open->op_create == NFS4_OPEN_CREATE
140 && (open->op_createmode == NFS4_CREATE_UNCHECKED
141 || open->op_createmode == NFS4_CREATE_GUARDED
142 || open->op_createmode == NFS4_CREATE_EXCLUSIVE4_1);
143 }
144
145
146
147
148
149 static void
150 do_set_nfs4_acl(struct svc_rqst *rqstp, struct svc_fh *fhp,
151 struct nfs4_acl *acl, u32 *bmval)
152 {
153 __be32 status;
154
155 status = nfsd4_set_nfs4_acl(rqstp, fhp, acl);
156 if (status)
157
158
159
160
161
162 bmval[0] &= ~FATTR4_WORD0_ACL;
163 }
164
165 static inline void
166 fh_dup2(struct svc_fh *dst, struct svc_fh *src)
167 {
168 fh_put(dst);
169 dget(src->fh_dentry);
170 if (src->fh_export)
171 exp_get(src->fh_export);
172 *dst = *src;
173 }
174
175 static __be32
176 do_open_permission(struct svc_rqst *rqstp, struct svc_fh *current_fh, struct nfsd4_open *open, int accmode)
177 {
178 __be32 status;
179
180 if (open->op_truncate &&
181 !(open->op_share_access & NFS4_SHARE_ACCESS_WRITE))
182 return nfserr_inval;
183
184 accmode |= NFSD_MAY_READ_IF_EXEC;
185
186 if (open->op_share_access & NFS4_SHARE_ACCESS_READ)
187 accmode |= NFSD_MAY_READ;
188 if (open->op_share_access & NFS4_SHARE_ACCESS_WRITE)
189 accmode |= (NFSD_MAY_WRITE | NFSD_MAY_TRUNC);
190 if (open->op_share_deny & NFS4_SHARE_DENY_READ)
191 accmode |= NFSD_MAY_WRITE;
192
193 status = fh_verify(rqstp, current_fh, S_IFREG, accmode);
194
195 return status;
196 }
197
198 static __be32 nfsd_check_obj_isreg(struct svc_fh *fh)
199 {
200 umode_t mode = d_inode(fh->fh_dentry)->i_mode;
201
202 if (S_ISREG(mode))
203 return nfs_ok;
204 if (S_ISDIR(mode))
205 return nfserr_isdir;
206
207
208
209
210
211
212
213 return nfserr_symlink;
214 }
215
216 static void nfsd4_set_open_owner_reply_cache(struct nfsd4_compound_state *cstate, struct nfsd4_open *open, struct svc_fh *resfh)
217 {
218 if (nfsd4_has_session(cstate))
219 return;
220 fh_copy_shallow(&open->op_openowner->oo_owner.so_replay.rp_openfh,
221 &resfh->fh_handle);
222 }
223
224 static __be32
225 do_open_lookup(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, struct nfsd4_open *open, struct svc_fh **resfh)
226 {
227 struct svc_fh *current_fh = &cstate->current_fh;
228 int accmode;
229 __be32 status;
230
231 *resfh = kmalloc(sizeof(struct svc_fh), GFP_KERNEL);
232 if (!*resfh)
233 return nfserr_jukebox;
234 fh_init(*resfh, NFS4_FHSIZE);
235 open->op_truncate = 0;
236
237 if (open->op_create) {
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257 current->fs->umask = open->op_umask;
258 status = do_nfsd_create(rqstp, current_fh, open->op_fname.data,
259 open->op_fname.len, &open->op_iattr,
260 *resfh, open->op_createmode,
261 (u32 *)open->op_verf.data,
262 &open->op_truncate, &open->op_created);
263 current->fs->umask = 0;
264
265 if (!status && open->op_label.len)
266 nfsd4_security_inode_setsecctx(*resfh, &open->op_label, open->op_bmval);
267
268
269
270
271
272
273 if (nfsd_create_is_exclusive(open->op_createmode) && status == 0)
274 open->op_bmval[1] |= (FATTR4_WORD1_TIME_ACCESS |
275 FATTR4_WORD1_TIME_MODIFY);
276 } else
277
278
279
280
281
282
283 status = nfsd_lookup(rqstp, current_fh,
284 open->op_fname.data, open->op_fname.len, *resfh);
285 if (status)
286 goto out;
287 status = nfsd_check_obj_isreg(*resfh);
288 if (status)
289 goto out;
290
291 if (is_create_with_attrs(open) && open->op_acl != NULL)
292 do_set_nfs4_acl(rqstp, *resfh, open->op_acl, open->op_bmval);
293
294 nfsd4_set_open_owner_reply_cache(cstate, open, *resfh);
295 accmode = NFSD_MAY_NOP;
296 if (open->op_created ||
297 open->op_claim_type == NFS4_OPEN_CLAIM_DELEGATE_CUR)
298 accmode |= NFSD_MAY_OWNER_OVERRIDE;
299 status = do_open_permission(rqstp, *resfh, open, accmode);
300 set_change_info(&open->op_cinfo, current_fh);
301 out:
302 return status;
303 }
304
305 static __be32
306 do_open_fhandle(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, struct nfsd4_open *open)
307 {
308 struct svc_fh *current_fh = &cstate->current_fh;
309 __be32 status;
310 int accmode = 0;
311
312
313
314
315
316 memset(&open->op_cinfo, 0, sizeof(struct nfsd4_change_info));
317
318 nfsd4_set_open_owner_reply_cache(cstate, open, current_fh);
319
320 open->op_truncate = (open->op_iattr.ia_valid & ATTR_SIZE) &&
321 (open->op_iattr.ia_size == 0);
322
323
324
325
326
327
328
329
330
331 if (open->op_claim_type == NFS4_OPEN_CLAIM_DELEG_CUR_FH)
332 accmode = NFSD_MAY_OWNER_OVERRIDE;
333
334 status = do_open_permission(rqstp, current_fh, open, accmode);
335
336 return status;
337 }
338
339 static void
340 copy_clientid(clientid_t *clid, struct nfsd4_session *session)
341 {
342 struct nfsd4_sessionid *sid =
343 (struct nfsd4_sessionid *)session->se_sessionid.data;
344
345 clid->cl_boot = sid->clientid.cl_boot;
346 clid->cl_id = sid->clientid.cl_id;
347 }
348
349 static __be32
350 nfsd4_open(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
351 union nfsd4_op_u *u)
352 {
353 struct nfsd4_open *open = &u->open;
354 __be32 status;
355 struct svc_fh *resfh = NULL;
356 struct net *net = SVC_NET(rqstp);
357 struct nfsd_net *nn = net_generic(net, nfsd_net_id);
358 bool reclaim = false;
359
360 dprintk("NFSD: nfsd4_open filename %.*s op_openowner %p\n",
361 (int)open->op_fname.len, open->op_fname.data,
362 open->op_openowner);
363
364
365 if (open->op_create && open->op_claim_type != NFS4_OPEN_CLAIM_NULL)
366 return nfserr_inval;
367
368 open->op_created = 0;
369
370
371
372
373 if (nfsd4_has_session(cstate) &&
374 !test_bit(NFSD4_CLIENT_RECLAIM_COMPLETE,
375 &cstate->session->se_client->cl_flags) &&
376 open->op_claim_type != NFS4_OPEN_CLAIM_PREVIOUS)
377 return nfserr_grace;
378
379 if (nfsd4_has_session(cstate))
380 copy_clientid(&open->op_clientid, cstate->session);
381
382
383 status = nfsd4_process_open1(cstate, open, nn);
384 if (status == nfserr_replay_me) {
385 struct nfs4_replay *rp = &open->op_openowner->oo_owner.so_replay;
386 fh_put(&cstate->current_fh);
387 fh_copy_shallow(&cstate->current_fh.fh_handle,
388 &rp->rp_openfh);
389 status = fh_verify(rqstp, &cstate->current_fh, 0, NFSD_MAY_NOP);
390 if (status)
391 dprintk("nfsd4_open: replay failed"
392 " restoring previous filehandle\n");
393 else
394 status = nfserr_replay_me;
395 }
396 if (status)
397 goto out;
398 if (open->op_xdr_error) {
399 status = open->op_xdr_error;
400 goto out;
401 }
402
403 status = nfsd4_check_open_attributes(rqstp, cstate, open);
404 if (status)
405 goto out;
406
407
408
409 status = nfserr_grace;
410 if (opens_in_grace(net) && open->op_claim_type != NFS4_OPEN_CLAIM_PREVIOUS)
411 goto out;
412 status = nfserr_no_grace;
413 if (!opens_in_grace(net) && open->op_claim_type == NFS4_OPEN_CLAIM_PREVIOUS)
414 goto out;
415
416 switch (open->op_claim_type) {
417 case NFS4_OPEN_CLAIM_DELEGATE_CUR:
418 case NFS4_OPEN_CLAIM_NULL:
419 status = do_open_lookup(rqstp, cstate, open, &resfh);
420 if (status)
421 goto out;
422 break;
423 case NFS4_OPEN_CLAIM_PREVIOUS:
424 status = nfs4_check_open_reclaim(&open->op_clientid,
425 cstate, nn);
426 if (status)
427 goto out;
428 open->op_openowner->oo_flags |= NFS4_OO_CONFIRMED;
429 reclaim = true;
430
431 case NFS4_OPEN_CLAIM_FH:
432 case NFS4_OPEN_CLAIM_DELEG_CUR_FH:
433 status = do_open_fhandle(rqstp, cstate, open);
434 if (status)
435 goto out;
436 resfh = &cstate->current_fh;
437 break;
438 case NFS4_OPEN_CLAIM_DELEG_PREV_FH:
439 case NFS4_OPEN_CLAIM_DELEGATE_PREV:
440 dprintk("NFSD: unsupported OPEN claim type %d\n",
441 open->op_claim_type);
442 status = nfserr_notsupp;
443 goto out;
444 default:
445 dprintk("NFSD: Invalid OPEN claim type %d\n",
446 open->op_claim_type);
447 status = nfserr_inval;
448 goto out;
449 }
450
451
452
453
454
455 status = nfsd4_process_open2(rqstp, resfh, open);
456 WARN(status && open->op_created,
457 "nfsd4_process_open2 failed to open newly-created file! status=%u\n",
458 be32_to_cpu(status));
459 if (reclaim && !status)
460 nn->somebody_reclaimed = true;
461 out:
462 if (resfh && resfh != &cstate->current_fh) {
463 fh_dup2(&cstate->current_fh, resfh);
464 fh_put(resfh);
465 kfree(resfh);
466 }
467 nfsd4_cleanup_open_state(cstate, open);
468 nfsd4_bump_seqid(cstate, status);
469 return status;
470 }
471
472
473
474
475
476
477
478 static __be32 nfsd4_open_omfg(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, struct nfsd4_op *op)
479 {
480 struct nfsd4_open *open = &op->u.open;
481
482 if (!seqid_mutating_err(ntohl(op->status)))
483 return op->status;
484 if (nfsd4_has_session(cstate))
485 return op->status;
486 open->op_xdr_error = op->status;
487 return nfsd4_open(rqstp, cstate, &op->u);
488 }
489
490
491
492
493 static __be32
494 nfsd4_getfh(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
495 union nfsd4_op_u *u)
496 {
497 u->getfh = &cstate->current_fh;
498 return nfs_ok;
499 }
500
501 static __be32
502 nfsd4_putfh(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
503 union nfsd4_op_u *u)
504 {
505 struct nfsd4_putfh *putfh = &u->putfh;
506
507 fh_put(&cstate->current_fh);
508 cstate->current_fh.fh_handle.fh_size = putfh->pf_fhlen;
509 memcpy(&cstate->current_fh.fh_handle.fh_base, putfh->pf_fhval,
510 putfh->pf_fhlen);
511 return fh_verify(rqstp, &cstate->current_fh, 0, NFSD_MAY_BYPASS_GSS);
512 }
513
514 static __be32
515 nfsd4_putrootfh(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
516 union nfsd4_op_u *u)
517 {
518 __be32 status;
519
520 fh_put(&cstate->current_fh);
521 status = exp_pseudoroot(rqstp, &cstate->current_fh);
522 return status;
523 }
524
525 static __be32
526 nfsd4_restorefh(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
527 union nfsd4_op_u *u)
528 {
529 if (!cstate->save_fh.fh_dentry)
530 return nfserr_restorefh;
531
532 fh_dup2(&cstate->current_fh, &cstate->save_fh);
533 if (HAS_STATE_ID(cstate, SAVED_STATE_ID_FLAG)) {
534 memcpy(&cstate->current_stateid, &cstate->save_stateid, sizeof(stateid_t));
535 SET_STATE_ID(cstate, CURRENT_STATE_ID_FLAG);
536 }
537 return nfs_ok;
538 }
539
540 static __be32
541 nfsd4_savefh(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
542 union nfsd4_op_u *u)
543 {
544 fh_dup2(&cstate->save_fh, &cstate->current_fh);
545 if (HAS_STATE_ID(cstate, CURRENT_STATE_ID_FLAG)) {
546 memcpy(&cstate->save_stateid, &cstate->current_stateid, sizeof(stateid_t));
547 SET_STATE_ID(cstate, SAVED_STATE_ID_FLAG);
548 }
549 return nfs_ok;
550 }
551
552
553
554
555 static __be32
556 nfsd4_access(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
557 union nfsd4_op_u *u)
558 {
559 struct nfsd4_access *access = &u->access;
560
561 if (access->ac_req_access & ~NFS3_ACCESS_FULL)
562 return nfserr_inval;
563
564 access->ac_resp_access = access->ac_req_access;
565 return nfsd_access(rqstp, &cstate->current_fh, &access->ac_resp_access,
566 &access->ac_supported);
567 }
568
569 static void gen_boot_verifier(nfs4_verifier *verifier, struct net *net)
570 {
571 __be32 *verf = (__be32 *)verifier->data;
572
573 BUILD_BUG_ON(2*sizeof(*verf) != sizeof(verifier->data));
574
575 nfsd_copy_boot_verifier(verf, net_generic(net, nfsd_net_id));
576 }
577
578 static __be32
579 nfsd4_commit(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
580 union nfsd4_op_u *u)
581 {
582 struct nfsd4_commit *commit = &u->commit;
583
584 gen_boot_verifier(&commit->co_verf, SVC_NET(rqstp));
585 return nfsd_commit(rqstp, &cstate->current_fh, commit->co_offset,
586 commit->co_count);
587 }
588
589 static __be32
590 nfsd4_create(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
591 union nfsd4_op_u *u)
592 {
593 struct nfsd4_create *create = &u->create;
594 struct svc_fh resfh;
595 __be32 status;
596 dev_t rdev;
597
598 fh_init(&resfh, NFS4_FHSIZE);
599
600 status = fh_verify(rqstp, &cstate->current_fh, S_IFDIR, NFSD_MAY_NOP);
601 if (status)
602 return status;
603
604 status = check_attr_support(rqstp, cstate, create->cr_bmval,
605 nfsd_attrmask);
606 if (status)
607 return status;
608
609 current->fs->umask = create->cr_umask;
610 switch (create->cr_type) {
611 case NF4LNK:
612 status = nfsd_symlink(rqstp, &cstate->current_fh,
613 create->cr_name, create->cr_namelen,
614 create->cr_data, &resfh);
615 break;
616
617 case NF4BLK:
618 status = nfserr_inval;
619 rdev = MKDEV(create->cr_specdata1, create->cr_specdata2);
620 if (MAJOR(rdev) != create->cr_specdata1 ||
621 MINOR(rdev) != create->cr_specdata2)
622 goto out_umask;
623 status = nfsd_create(rqstp, &cstate->current_fh,
624 create->cr_name, create->cr_namelen,
625 &create->cr_iattr, S_IFBLK, rdev, &resfh);
626 break;
627
628 case NF4CHR:
629 status = nfserr_inval;
630 rdev = MKDEV(create->cr_specdata1, create->cr_specdata2);
631 if (MAJOR(rdev) != create->cr_specdata1 ||
632 MINOR(rdev) != create->cr_specdata2)
633 goto out_umask;
634 status = nfsd_create(rqstp, &cstate->current_fh,
635 create->cr_name, create->cr_namelen,
636 &create->cr_iattr,S_IFCHR, rdev, &resfh);
637 break;
638
639 case NF4SOCK:
640 status = nfsd_create(rqstp, &cstate->current_fh,
641 create->cr_name, create->cr_namelen,
642 &create->cr_iattr, S_IFSOCK, 0, &resfh);
643 break;
644
645 case NF4FIFO:
646 status = nfsd_create(rqstp, &cstate->current_fh,
647 create->cr_name, create->cr_namelen,
648 &create->cr_iattr, S_IFIFO, 0, &resfh);
649 break;
650
651 case NF4DIR:
652 create->cr_iattr.ia_valid &= ~ATTR_SIZE;
653 status = nfsd_create(rqstp, &cstate->current_fh,
654 create->cr_name, create->cr_namelen,
655 &create->cr_iattr, S_IFDIR, 0, &resfh);
656 break;
657
658 default:
659 status = nfserr_badtype;
660 }
661
662 if (status)
663 goto out;
664
665 if (create->cr_label.len)
666 nfsd4_security_inode_setsecctx(&resfh, &create->cr_label, create->cr_bmval);
667
668 if (create->cr_acl != NULL)
669 do_set_nfs4_acl(rqstp, &resfh, create->cr_acl,
670 create->cr_bmval);
671
672 fh_unlock(&cstate->current_fh);
673 set_change_info(&create->cr_cinfo, &cstate->current_fh);
674 fh_dup2(&cstate->current_fh, &resfh);
675 out:
676 fh_put(&resfh);
677 out_umask:
678 current->fs->umask = 0;
679 return status;
680 }
681
682 static __be32
683 nfsd4_getattr(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
684 union nfsd4_op_u *u)
685 {
686 struct nfsd4_getattr *getattr = &u->getattr;
687 __be32 status;
688
689 status = fh_verify(rqstp, &cstate->current_fh, 0, NFSD_MAY_NOP);
690 if (status)
691 return status;
692
693 if (getattr->ga_bmval[1] & NFSD_WRITEONLY_ATTRS_WORD1)
694 return nfserr_inval;
695
696 getattr->ga_bmval[0] &= nfsd_suppattrs[cstate->minorversion][0];
697 getattr->ga_bmval[1] &= nfsd_suppattrs[cstate->minorversion][1];
698 getattr->ga_bmval[2] &= nfsd_suppattrs[cstate->minorversion][2];
699
700 getattr->ga_fhp = &cstate->current_fh;
701 return nfs_ok;
702 }
703
704 static __be32
705 nfsd4_link(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
706 union nfsd4_op_u *u)
707 {
708 struct nfsd4_link *link = &u->link;
709 __be32 status;
710
711 status = nfsd_link(rqstp, &cstate->current_fh,
712 link->li_name, link->li_namelen, &cstate->save_fh);
713 if (!status)
714 set_change_info(&link->li_cinfo, &cstate->current_fh);
715 return status;
716 }
717
718 static __be32 nfsd4_do_lookupp(struct svc_rqst *rqstp, struct svc_fh *fh)
719 {
720 struct svc_fh tmp_fh;
721 __be32 ret;
722
723 fh_init(&tmp_fh, NFS4_FHSIZE);
724 ret = exp_pseudoroot(rqstp, &tmp_fh);
725 if (ret)
726 return ret;
727 if (tmp_fh.fh_dentry == fh->fh_dentry) {
728 fh_put(&tmp_fh);
729 return nfserr_noent;
730 }
731 fh_put(&tmp_fh);
732 return nfsd_lookup(rqstp, fh, "..", 2, fh);
733 }
734
735 static __be32
736 nfsd4_lookupp(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
737 union nfsd4_op_u *u)
738 {
739 return nfsd4_do_lookupp(rqstp, &cstate->current_fh);
740 }
741
742 static __be32
743 nfsd4_lookup(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
744 union nfsd4_op_u *u)
745 {
746 return nfsd_lookup(rqstp, &cstate->current_fh,
747 u->lookup.lo_name, u->lookup.lo_len,
748 &cstate->current_fh);
749 }
750
751 static __be32
752 nfsd4_read(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
753 union nfsd4_op_u *u)
754 {
755 struct nfsd4_read *read = &u->read;
756 __be32 status;
757
758 read->rd_nf = NULL;
759 if (read->rd_offset >= OFFSET_MAX)
760 return nfserr_inval;
761
762 trace_nfsd_read_start(rqstp, &cstate->current_fh,
763 read->rd_offset, read->rd_length);
764
765
766
767
768
769
770
771
772
773 if (!nfsd4_last_compound_op(rqstp))
774 clear_bit(RQ_SPLICE_OK, &rqstp->rq_flags);
775
776
777 status = nfs4_preprocess_stateid_op(rqstp, cstate, &cstate->current_fh,
778 &read->rd_stateid, RD_STATE,
779 &read->rd_nf);
780 if (status) {
781 dprintk("NFSD: nfsd4_read: couldn't process stateid!\n");
782 goto out;
783 }
784 status = nfs_ok;
785 out:
786 read->rd_rqstp = rqstp;
787 read->rd_fhp = &cstate->current_fh;
788 return status;
789 }
790
791
792 static void
793 nfsd4_read_release(union nfsd4_op_u *u)
794 {
795 if (u->read.rd_nf)
796 nfsd_file_put(u->read.rd_nf);
797 trace_nfsd_read_done(u->read.rd_rqstp, u->read.rd_fhp,
798 u->read.rd_offset, u->read.rd_length);
799 }
800
801 static __be32
802 nfsd4_readdir(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
803 union nfsd4_op_u *u)
804 {
805 struct nfsd4_readdir *readdir = &u->readdir;
806 u64 cookie = readdir->rd_cookie;
807 static const nfs4_verifier zeroverf;
808
809
810
811 if (readdir->rd_bmval[1] & NFSD_WRITEONLY_ATTRS_WORD1)
812 return nfserr_inval;
813
814 readdir->rd_bmval[0] &= nfsd_suppattrs[cstate->minorversion][0];
815 readdir->rd_bmval[1] &= nfsd_suppattrs[cstate->minorversion][1];
816 readdir->rd_bmval[2] &= nfsd_suppattrs[cstate->minorversion][2];
817
818 if ((cookie == 1) || (cookie == 2) ||
819 (cookie == 0 && memcmp(readdir->rd_verf.data, zeroverf.data, NFS4_VERIFIER_SIZE)))
820 return nfserr_bad_cookie;
821
822 readdir->rd_rqstp = rqstp;
823 readdir->rd_fhp = &cstate->current_fh;
824 return nfs_ok;
825 }
826
827 static __be32
828 nfsd4_readlink(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
829 union nfsd4_op_u *u)
830 {
831 u->readlink.rl_rqstp = rqstp;
832 u->readlink.rl_fhp = &cstate->current_fh;
833 return nfs_ok;
834 }
835
836 static __be32
837 nfsd4_remove(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
838 union nfsd4_op_u *u)
839 {
840 struct nfsd4_remove *remove = &u->remove;
841 __be32 status;
842
843 if (opens_in_grace(SVC_NET(rqstp)))
844 return nfserr_grace;
845 status = nfsd_unlink(rqstp, &cstate->current_fh, 0,
846 remove->rm_name, remove->rm_namelen);
847 if (!status) {
848 fh_unlock(&cstate->current_fh);
849 set_change_info(&remove->rm_cinfo, &cstate->current_fh);
850 }
851 return status;
852 }
853
854 static __be32
855 nfsd4_rename(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
856 union nfsd4_op_u *u)
857 {
858 struct nfsd4_rename *rename = &u->rename;
859 __be32 status;
860
861 if (opens_in_grace(SVC_NET(rqstp)))
862 return nfserr_grace;
863 status = nfsd_rename(rqstp, &cstate->save_fh, rename->rn_sname,
864 rename->rn_snamelen, &cstate->current_fh,
865 rename->rn_tname, rename->rn_tnamelen);
866 if (status)
867 return status;
868 set_change_info(&rename->rn_sinfo, &cstate->current_fh);
869 set_change_info(&rename->rn_tinfo, &cstate->save_fh);
870 return nfs_ok;
871 }
872
873 static __be32
874 nfsd4_secinfo(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
875 union nfsd4_op_u *u)
876 {
877 struct nfsd4_secinfo *secinfo = &u->secinfo;
878 struct svc_export *exp;
879 struct dentry *dentry;
880 __be32 err;
881
882 err = fh_verify(rqstp, &cstate->current_fh, S_IFDIR, NFSD_MAY_EXEC);
883 if (err)
884 return err;
885 err = nfsd_lookup_dentry(rqstp, &cstate->current_fh,
886 secinfo->si_name, secinfo->si_namelen,
887 &exp, &dentry);
888 if (err)
889 return err;
890 fh_unlock(&cstate->current_fh);
891 if (d_really_is_negative(dentry)) {
892 exp_put(exp);
893 err = nfserr_noent;
894 } else
895 secinfo->si_exp = exp;
896 dput(dentry);
897 if (cstate->minorversion)
898
899 fh_put(&cstate->current_fh);
900 return err;
901 }
902
903 static __be32
904 nfsd4_secinfo_no_name(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
905 union nfsd4_op_u *u)
906 {
907 __be32 err;
908
909 switch (u->secinfo_no_name.sin_style) {
910 case NFS4_SECINFO_STYLE4_CURRENT_FH:
911 break;
912 case NFS4_SECINFO_STYLE4_PARENT:
913 err = nfsd4_do_lookupp(rqstp, &cstate->current_fh);
914 if (err)
915 return err;
916 break;
917 default:
918 return nfserr_inval;
919 }
920
921 u->secinfo_no_name.sin_exp = exp_get(cstate->current_fh.fh_export);
922 fh_put(&cstate->current_fh);
923 return nfs_ok;
924 }
925
926 static void
927 nfsd4_secinfo_release(union nfsd4_op_u *u)
928 {
929 if (u->secinfo.si_exp)
930 exp_put(u->secinfo.si_exp);
931 }
932
933 static void
934 nfsd4_secinfo_no_name_release(union nfsd4_op_u *u)
935 {
936 if (u->secinfo_no_name.sin_exp)
937 exp_put(u->secinfo_no_name.sin_exp);
938 }
939
940 static __be32
941 nfsd4_setattr(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
942 union nfsd4_op_u *u)
943 {
944 struct nfsd4_setattr *setattr = &u->setattr;
945 __be32 status = nfs_ok;
946 int err;
947
948 if (setattr->sa_iattr.ia_valid & ATTR_SIZE) {
949 status = nfs4_preprocess_stateid_op(rqstp, cstate,
950 &cstate->current_fh, &setattr->sa_stateid,
951 WR_STATE, NULL);
952 if (status) {
953 dprintk("NFSD: nfsd4_setattr: couldn't process stateid!\n");
954 return status;
955 }
956 }
957 err = fh_want_write(&cstate->current_fh);
958 if (err)
959 return nfserrno(err);
960 status = nfs_ok;
961
962 status = check_attr_support(rqstp, cstate, setattr->sa_bmval,
963 nfsd_attrmask);
964 if (status)
965 goto out;
966
967 if (setattr->sa_acl != NULL)
968 status = nfsd4_set_nfs4_acl(rqstp, &cstate->current_fh,
969 setattr->sa_acl);
970 if (status)
971 goto out;
972 if (setattr->sa_label.len)
973 status = nfsd4_set_nfs4_label(rqstp, &cstate->current_fh,
974 &setattr->sa_label);
975 if (status)
976 goto out;
977 status = nfsd_setattr(rqstp, &cstate->current_fh, &setattr->sa_iattr,
978 0, (time_t)0);
979 out:
980 fh_drop_write(&cstate->current_fh);
981 return status;
982 }
983
984 static __be32
985 nfsd4_write(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
986 union nfsd4_op_u *u)
987 {
988 struct nfsd4_write *write = &u->write;
989 stateid_t *stateid = &write->wr_stateid;
990 struct nfsd_file *nf = NULL;
991 __be32 status = nfs_ok;
992 unsigned long cnt;
993 int nvecs;
994
995 if (write->wr_offset >= OFFSET_MAX)
996 return nfserr_inval;
997
998 cnt = write->wr_buflen;
999 trace_nfsd_write_start(rqstp, &cstate->current_fh,
1000 write->wr_offset, cnt);
1001 status = nfs4_preprocess_stateid_op(rqstp, cstate, &cstate->current_fh,
1002 stateid, WR_STATE, &nf);
1003 if (status) {
1004 dprintk("NFSD: nfsd4_write: couldn't process stateid!\n");
1005 return status;
1006 }
1007
1008 write->wr_how_written = write->wr_stable_how;
1009 gen_boot_verifier(&write->wr_verifier, SVC_NET(rqstp));
1010
1011 nvecs = svc_fill_write_vector(rqstp, write->wr_pagelist,
1012 &write->wr_head, write->wr_buflen);
1013 WARN_ON_ONCE(nvecs > ARRAY_SIZE(rqstp->rq_vec));
1014
1015 status = nfsd_vfs_write(rqstp, &cstate->current_fh, nf->nf_file,
1016 write->wr_offset, rqstp->rq_vec, nvecs, &cnt,
1017 write->wr_how_written);
1018 nfsd_file_put(nf);
1019
1020 write->wr_bytes_written = cnt;
1021 trace_nfsd_write_done(rqstp, &cstate->current_fh,
1022 write->wr_offset, cnt);
1023 return status;
1024 }
1025
1026 static __be32
1027 nfsd4_verify_copy(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
1028 stateid_t *src_stateid, struct nfsd_file **src,
1029 stateid_t *dst_stateid, struct nfsd_file **dst)
1030 {
1031 __be32 status;
1032
1033 if (!cstate->save_fh.fh_dentry)
1034 return nfserr_nofilehandle;
1035
1036 status = nfs4_preprocess_stateid_op(rqstp, cstate, &cstate->save_fh,
1037 src_stateid, RD_STATE, src);
1038 if (status) {
1039 dprintk("NFSD: %s: couldn't process src stateid!\n", __func__);
1040 goto out;
1041 }
1042
1043 status = nfs4_preprocess_stateid_op(rqstp, cstate, &cstate->current_fh,
1044 dst_stateid, WR_STATE, dst);
1045 if (status) {
1046 dprintk("NFSD: %s: couldn't process dst stateid!\n", __func__);
1047 goto out_put_src;
1048 }
1049
1050
1051 if (!S_ISREG(file_inode((*src)->nf_file)->i_mode) ||
1052 !S_ISREG(file_inode((*dst)->nf_file)->i_mode)) {
1053 status = nfserr_wrong_type;
1054 goto out_put_dst;
1055 }
1056
1057 out:
1058 return status;
1059 out_put_dst:
1060 nfsd_file_put(*dst);
1061 out_put_src:
1062 nfsd_file_put(*src);
1063 goto out;
1064 }
1065
1066 static __be32
1067 nfsd4_clone(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
1068 union nfsd4_op_u *u)
1069 {
1070 struct nfsd4_clone *clone = &u->clone;
1071 struct nfsd_file *src, *dst;
1072 __be32 status;
1073
1074 status = nfsd4_verify_copy(rqstp, cstate, &clone->cl_src_stateid, &src,
1075 &clone->cl_dst_stateid, &dst);
1076 if (status)
1077 goto out;
1078
1079 status = nfsd4_clone_file_range(src->nf_file, clone->cl_src_pos,
1080 dst->nf_file, clone->cl_dst_pos, clone->cl_count,
1081 EX_ISSYNC(cstate->current_fh.fh_export));
1082
1083 nfsd_file_put(dst);
1084 nfsd_file_put(src);
1085 out:
1086 return status;
1087 }
1088
1089 void nfs4_put_copy(struct nfsd4_copy *copy)
1090 {
1091 if (!refcount_dec_and_test(©->refcount))
1092 return;
1093 kfree(copy);
1094 }
1095
1096 static bool
1097 check_and_set_stop_copy(struct nfsd4_copy *copy)
1098 {
1099 bool value;
1100
1101 spin_lock(©->cp_clp->async_lock);
1102 value = copy->stopped;
1103 if (!copy->stopped)
1104 copy->stopped = true;
1105 spin_unlock(©->cp_clp->async_lock);
1106 return value;
1107 }
1108
1109 static void nfsd4_stop_copy(struct nfsd4_copy *copy)
1110 {
1111
1112 if (!check_and_set_stop_copy(copy))
1113 kthread_stop(copy->copy_task);
1114 nfs4_put_copy(copy);
1115 }
1116
1117 static struct nfsd4_copy *nfsd4_get_copy(struct nfs4_client *clp)
1118 {
1119 struct nfsd4_copy *copy = NULL;
1120
1121 spin_lock(&clp->async_lock);
1122 if (!list_empty(&clp->async_copies)) {
1123 copy = list_first_entry(&clp->async_copies, struct nfsd4_copy,
1124 copies);
1125 refcount_inc(©->refcount);
1126 }
1127 spin_unlock(&clp->async_lock);
1128 return copy;
1129 }
1130
1131 void nfsd4_shutdown_copy(struct nfs4_client *clp)
1132 {
1133 struct nfsd4_copy *copy;
1134
1135 while ((copy = nfsd4_get_copy(clp)) != NULL)
1136 nfsd4_stop_copy(copy);
1137 }
1138
1139 static void nfsd4_cb_offload_release(struct nfsd4_callback *cb)
1140 {
1141 struct nfsd4_copy *copy = container_of(cb, struct nfsd4_copy, cp_cb);
1142
1143 nfs4_put_copy(copy);
1144 }
1145
1146 static int nfsd4_cb_offload_done(struct nfsd4_callback *cb,
1147 struct rpc_task *task)
1148 {
1149 return 1;
1150 }
1151
1152 static const struct nfsd4_callback_ops nfsd4_cb_offload_ops = {
1153 .release = nfsd4_cb_offload_release,
1154 .done = nfsd4_cb_offload_done
1155 };
1156
1157 static void nfsd4_init_copy_res(struct nfsd4_copy *copy, bool sync)
1158 {
1159 copy->cp_res.wr_stable_how = NFS_UNSTABLE;
1160 copy->cp_synchronous = sync;
1161 gen_boot_verifier(©->cp_res.wr_verifier, copy->cp_clp->net);
1162 }
1163
1164 static ssize_t _nfsd_copy_file_range(struct nfsd4_copy *copy)
1165 {
1166 ssize_t bytes_copied = 0;
1167 size_t bytes_total = copy->cp_count;
1168 u64 src_pos = copy->cp_src_pos;
1169 u64 dst_pos = copy->cp_dst_pos;
1170
1171 do {
1172 if (kthread_should_stop())
1173 break;
1174 bytes_copied = nfsd_copy_file_range(copy->nf_src->nf_file,
1175 src_pos, copy->nf_dst->nf_file, dst_pos,
1176 bytes_total);
1177 if (bytes_copied <= 0)
1178 break;
1179 bytes_total -= bytes_copied;
1180 copy->cp_res.wr_bytes_written += bytes_copied;
1181 src_pos += bytes_copied;
1182 dst_pos += bytes_copied;
1183 } while (bytes_total > 0 && !copy->cp_synchronous);
1184 return bytes_copied;
1185 }
1186
1187 static __be32 nfsd4_do_copy(struct nfsd4_copy *copy, bool sync)
1188 {
1189 __be32 status;
1190 ssize_t bytes;
1191
1192 bytes = _nfsd_copy_file_range(copy);
1193
1194
1195
1196 if (bytes < 0 && !copy->cp_res.wr_bytes_written)
1197 status = nfserrno(bytes);
1198 else {
1199 nfsd4_init_copy_res(copy, sync);
1200 status = nfs_ok;
1201 }
1202
1203 nfsd_file_put(copy->nf_src);
1204 nfsd_file_put(copy->nf_dst);
1205 return status;
1206 }
1207
1208 static void dup_copy_fields(struct nfsd4_copy *src, struct nfsd4_copy *dst)
1209 {
1210 dst->cp_src_pos = src->cp_src_pos;
1211 dst->cp_dst_pos = src->cp_dst_pos;
1212 dst->cp_count = src->cp_count;
1213 dst->cp_synchronous = src->cp_synchronous;
1214 memcpy(&dst->cp_res, &src->cp_res, sizeof(src->cp_res));
1215 memcpy(&dst->fh, &src->fh, sizeof(src->fh));
1216 dst->cp_clp = src->cp_clp;
1217 dst->nf_dst = nfsd_file_get(src->nf_dst);
1218 dst->nf_src = nfsd_file_get(src->nf_src);
1219 memcpy(&dst->cp_stateid, &src->cp_stateid, sizeof(src->cp_stateid));
1220 }
1221
1222 static void cleanup_async_copy(struct nfsd4_copy *copy)
1223 {
1224 nfs4_free_cp_state(copy);
1225 nfsd_file_put(copy->nf_dst);
1226 nfsd_file_put(copy->nf_src);
1227 spin_lock(©->cp_clp->async_lock);
1228 list_del(©->copies);
1229 spin_unlock(©->cp_clp->async_lock);
1230 nfs4_put_copy(copy);
1231 }
1232
1233 static int nfsd4_do_async_copy(void *data)
1234 {
1235 struct nfsd4_copy *copy = (struct nfsd4_copy *)data;
1236 struct nfsd4_copy *cb_copy;
1237
1238 copy->nfserr = nfsd4_do_copy(copy, 0);
1239 cb_copy = kzalloc(sizeof(struct nfsd4_copy), GFP_KERNEL);
1240 if (!cb_copy)
1241 goto out;
1242 memcpy(&cb_copy->cp_res, ©->cp_res, sizeof(copy->cp_res));
1243 cb_copy->cp_clp = copy->cp_clp;
1244 cb_copy->nfserr = copy->nfserr;
1245 memcpy(&cb_copy->fh, ©->fh, sizeof(copy->fh));
1246 nfsd4_init_cb(&cb_copy->cp_cb, cb_copy->cp_clp,
1247 &nfsd4_cb_offload_ops, NFSPROC4_CLNT_CB_OFFLOAD);
1248 nfsd4_run_cb(&cb_copy->cp_cb);
1249 out:
1250 cleanup_async_copy(copy);
1251 return 0;
1252 }
1253
1254 static __be32
1255 nfsd4_copy(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
1256 union nfsd4_op_u *u)
1257 {
1258 struct nfsd4_copy *copy = &u->copy;
1259 __be32 status;
1260 struct nfsd4_copy *async_copy = NULL;
1261
1262 status = nfsd4_verify_copy(rqstp, cstate, ©->cp_src_stateid,
1263 ©->nf_src, ©->cp_dst_stateid,
1264 ©->nf_dst);
1265 if (status)
1266 goto out;
1267
1268 copy->cp_clp = cstate->clp;
1269 memcpy(©->fh, &cstate->current_fh.fh_handle,
1270 sizeof(struct knfsd_fh));
1271 if (!copy->cp_synchronous) {
1272 struct nfsd_net *nn = net_generic(SVC_NET(rqstp), nfsd_net_id);
1273
1274 status = nfserrno(-ENOMEM);
1275 async_copy = kzalloc(sizeof(struct nfsd4_copy), GFP_KERNEL);
1276 if (!async_copy)
1277 goto out;
1278 if (!nfs4_init_cp_state(nn, copy)) {
1279 kfree(async_copy);
1280 goto out;
1281 }
1282 refcount_set(&async_copy->refcount, 1);
1283 memcpy(©->cp_res.cb_stateid, ©->cp_stateid,
1284 sizeof(copy->cp_stateid));
1285 dup_copy_fields(copy, async_copy);
1286 async_copy->copy_task = kthread_create(nfsd4_do_async_copy,
1287 async_copy, "%s", "copy thread");
1288 if (IS_ERR(async_copy->copy_task))
1289 goto out_err;
1290 spin_lock(&async_copy->cp_clp->async_lock);
1291 list_add(&async_copy->copies,
1292 &async_copy->cp_clp->async_copies);
1293 spin_unlock(&async_copy->cp_clp->async_lock);
1294 wake_up_process(async_copy->copy_task);
1295 status = nfs_ok;
1296 } else
1297 status = nfsd4_do_copy(copy, 1);
1298 out:
1299 return status;
1300 out_err:
1301 if (async_copy)
1302 cleanup_async_copy(async_copy);
1303 goto out;
1304 }
1305
1306 struct nfsd4_copy *
1307 find_async_copy(struct nfs4_client *clp, stateid_t *stateid)
1308 {
1309 struct nfsd4_copy *copy;
1310
1311 spin_lock(&clp->async_lock);
1312 list_for_each_entry(copy, &clp->async_copies, copies) {
1313 if (memcmp(©->cp_stateid, stateid, NFS4_STATEID_SIZE))
1314 continue;
1315 refcount_inc(©->refcount);
1316 spin_unlock(&clp->async_lock);
1317 return copy;
1318 }
1319 spin_unlock(&clp->async_lock);
1320 return NULL;
1321 }
1322
1323 static __be32
1324 nfsd4_offload_cancel(struct svc_rqst *rqstp,
1325 struct nfsd4_compound_state *cstate,
1326 union nfsd4_op_u *u)
1327 {
1328 struct nfsd4_offload_status *os = &u->offload_status;
1329 __be32 status = 0;
1330 struct nfsd4_copy *copy;
1331 struct nfs4_client *clp = cstate->clp;
1332
1333 copy = find_async_copy(clp, &os->stateid);
1334 if (copy)
1335 nfsd4_stop_copy(copy);
1336 else
1337 status = nfserr_bad_stateid;
1338
1339 return status;
1340 }
1341
1342 static __be32
1343 nfsd4_fallocate(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
1344 struct nfsd4_fallocate *fallocate, int flags)
1345 {
1346 __be32 status;
1347 struct nfsd_file *nf;
1348
1349 status = nfs4_preprocess_stateid_op(rqstp, cstate, &cstate->current_fh,
1350 &fallocate->falloc_stateid,
1351 WR_STATE, &nf);
1352 if (status != nfs_ok) {
1353 dprintk("NFSD: nfsd4_fallocate: couldn't process stateid!\n");
1354 return status;
1355 }
1356
1357 status = nfsd4_vfs_fallocate(rqstp, &cstate->current_fh, nf->nf_file,
1358 fallocate->falloc_offset,
1359 fallocate->falloc_length,
1360 flags);
1361 nfsd_file_put(nf);
1362 return status;
1363 }
1364 static __be32
1365 nfsd4_offload_status(struct svc_rqst *rqstp,
1366 struct nfsd4_compound_state *cstate,
1367 union nfsd4_op_u *u)
1368 {
1369 struct nfsd4_offload_status *os = &u->offload_status;
1370 __be32 status = 0;
1371 struct nfsd4_copy *copy;
1372 struct nfs4_client *clp = cstate->clp;
1373
1374 copy = find_async_copy(clp, &os->stateid);
1375 if (copy) {
1376 os->count = copy->cp_res.wr_bytes_written;
1377 nfs4_put_copy(copy);
1378 } else
1379 status = nfserr_bad_stateid;
1380
1381 return status;
1382 }
1383
1384 static __be32
1385 nfsd4_allocate(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
1386 union nfsd4_op_u *u)
1387 {
1388 return nfsd4_fallocate(rqstp, cstate, &u->allocate, 0);
1389 }
1390
1391 static __be32
1392 nfsd4_deallocate(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
1393 union nfsd4_op_u *u)
1394 {
1395 return nfsd4_fallocate(rqstp, cstate, &u->deallocate,
1396 FALLOC_FL_PUNCH_HOLE | FALLOC_FL_KEEP_SIZE);
1397 }
1398
1399 static __be32
1400 nfsd4_seek(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
1401 union nfsd4_op_u *u)
1402 {
1403 struct nfsd4_seek *seek = &u->seek;
1404 int whence;
1405 __be32 status;
1406 struct nfsd_file *nf;
1407
1408 status = nfs4_preprocess_stateid_op(rqstp, cstate, &cstate->current_fh,
1409 &seek->seek_stateid,
1410 RD_STATE, &nf);
1411 if (status) {
1412 dprintk("NFSD: nfsd4_seek: couldn't process stateid!\n");
1413 return status;
1414 }
1415
1416 switch (seek->seek_whence) {
1417 case NFS4_CONTENT_DATA:
1418 whence = SEEK_DATA;
1419 break;
1420 case NFS4_CONTENT_HOLE:
1421 whence = SEEK_HOLE;
1422 break;
1423 default:
1424 status = nfserr_union_notsupp;
1425 goto out;
1426 }
1427
1428
1429
1430
1431
1432 seek->seek_pos = vfs_llseek(nf->nf_file, seek->seek_offset, whence);
1433 if (seek->seek_pos < 0)
1434 status = nfserrno(seek->seek_pos);
1435 else if (seek->seek_pos >= i_size_read(file_inode(nf->nf_file)))
1436 seek->seek_eof = true;
1437
1438 out:
1439 nfsd_file_put(nf);
1440 return status;
1441 }
1442
1443
1444
1445
1446
1447
1448 static __be32
1449 _nfsd4_verify(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
1450 struct nfsd4_verify *verify)
1451 {
1452 __be32 *buf, *p;
1453 int count;
1454 __be32 status;
1455
1456 status = fh_verify(rqstp, &cstate->current_fh, 0, NFSD_MAY_NOP);
1457 if (status)
1458 return status;
1459
1460 status = check_attr_support(rqstp, cstate, verify->ve_bmval, NULL);
1461 if (status)
1462 return status;
1463
1464 if ((verify->ve_bmval[0] & FATTR4_WORD0_RDATTR_ERROR)
1465 || (verify->ve_bmval[1] & NFSD_WRITEONLY_ATTRS_WORD1))
1466 return nfserr_inval;
1467 if (verify->ve_attrlen & 3)
1468 return nfserr_inval;
1469
1470
1471
1472
1473 count = 4 + (verify->ve_attrlen >> 2);
1474 buf = kmalloc(count << 2, GFP_KERNEL);
1475 if (!buf)
1476 return nfserr_jukebox;
1477
1478 p = buf;
1479 status = nfsd4_encode_fattr_to_buf(&p, count, &cstate->current_fh,
1480 cstate->current_fh.fh_export,
1481 cstate->current_fh.fh_dentry,
1482 verify->ve_bmval,
1483 rqstp, 0);
1484
1485
1486
1487
1488 if (status == nfserr_resource)
1489 status = nfserr_not_same;
1490 if (status)
1491 goto out_kfree;
1492
1493
1494 p = buf + 1 + ntohl(buf[0]);
1495 status = nfserr_not_same;
1496 if (ntohl(*p++) != verify->ve_attrlen)
1497 goto out_kfree;
1498 if (!memcmp(p, verify->ve_attrval, verify->ve_attrlen))
1499 status = nfserr_same;
1500
1501 out_kfree:
1502 kfree(buf);
1503 return status;
1504 }
1505
1506 static __be32
1507 nfsd4_nverify(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
1508 union nfsd4_op_u *u)
1509 {
1510 __be32 status;
1511
1512 status = _nfsd4_verify(rqstp, cstate, &u->verify);
1513 return status == nfserr_not_same ? nfs_ok : status;
1514 }
1515
1516 static __be32
1517 nfsd4_verify(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
1518 union nfsd4_op_u *u)
1519 {
1520 __be32 status;
1521
1522 status = _nfsd4_verify(rqstp, cstate, &u->nverify);
1523 return status == nfserr_same ? nfs_ok : status;
1524 }
1525
1526 #ifdef CONFIG_NFSD_PNFS
1527 static const struct nfsd4_layout_ops *
1528 nfsd4_layout_verify(struct svc_export *exp, unsigned int layout_type)
1529 {
1530 if (!exp->ex_layout_types) {
1531 dprintk("%s: export does not support pNFS\n", __func__);
1532 return NULL;
1533 }
1534
1535 if (layout_type >= LAYOUT_TYPE_MAX ||
1536 !(exp->ex_layout_types & (1 << layout_type))) {
1537 dprintk("%s: layout type %d not supported\n",
1538 __func__, layout_type);
1539 return NULL;
1540 }
1541
1542 return nfsd4_layout_ops[layout_type];
1543 }
1544
1545 static __be32
1546 nfsd4_getdeviceinfo(struct svc_rqst *rqstp,
1547 struct nfsd4_compound_state *cstate, union nfsd4_op_u *u)
1548 {
1549 struct nfsd4_getdeviceinfo *gdp = &u->getdeviceinfo;
1550 const struct nfsd4_layout_ops *ops;
1551 struct nfsd4_deviceid_map *map;
1552 struct svc_export *exp;
1553 __be32 nfserr;
1554
1555 dprintk("%s: layout_type %u dev_id [0x%llx:0x%x] maxcnt %u\n",
1556 __func__,
1557 gdp->gd_layout_type,
1558 gdp->gd_devid.fsid_idx, gdp->gd_devid.generation,
1559 gdp->gd_maxcount);
1560
1561 map = nfsd4_find_devid_map(gdp->gd_devid.fsid_idx);
1562 if (!map) {
1563 dprintk("%s: couldn't find device ID to export mapping!\n",
1564 __func__);
1565 return nfserr_noent;
1566 }
1567
1568 exp = rqst_exp_find(rqstp, map->fsid_type, map->fsid);
1569 if (IS_ERR(exp)) {
1570 dprintk("%s: could not find device id\n", __func__);
1571 return nfserr_noent;
1572 }
1573
1574 nfserr = nfserr_layoutunavailable;
1575 ops = nfsd4_layout_verify(exp, gdp->gd_layout_type);
1576 if (!ops)
1577 goto out;
1578
1579 nfserr = nfs_ok;
1580 if (gdp->gd_maxcount != 0) {
1581 nfserr = ops->proc_getdeviceinfo(exp->ex_path.mnt->mnt_sb,
1582 rqstp, cstate->session->se_client, gdp);
1583 }
1584
1585 gdp->gd_notify_types &= ops->notify_types;
1586 out:
1587 exp_put(exp);
1588 return nfserr;
1589 }
1590
1591 static void
1592 nfsd4_getdeviceinfo_release(union nfsd4_op_u *u)
1593 {
1594 kfree(u->getdeviceinfo.gd_device);
1595 }
1596
1597 static __be32
1598 nfsd4_layoutget(struct svc_rqst *rqstp,
1599 struct nfsd4_compound_state *cstate, union nfsd4_op_u *u)
1600 {
1601 struct nfsd4_layoutget *lgp = &u->layoutget;
1602 struct svc_fh *current_fh = &cstate->current_fh;
1603 const struct nfsd4_layout_ops *ops;
1604 struct nfs4_layout_stateid *ls;
1605 __be32 nfserr;
1606 int accmode = NFSD_MAY_READ_IF_EXEC;
1607
1608 switch (lgp->lg_seg.iomode) {
1609 case IOMODE_READ:
1610 accmode |= NFSD_MAY_READ;
1611 break;
1612 case IOMODE_RW:
1613 accmode |= NFSD_MAY_READ | NFSD_MAY_WRITE;
1614 break;
1615 default:
1616 dprintk("%s: invalid iomode %d\n",
1617 __func__, lgp->lg_seg.iomode);
1618 nfserr = nfserr_badiomode;
1619 goto out;
1620 }
1621
1622 nfserr = fh_verify(rqstp, current_fh, 0, accmode);
1623 if (nfserr)
1624 goto out;
1625
1626 nfserr = nfserr_layoutunavailable;
1627 ops = nfsd4_layout_verify(current_fh->fh_export, lgp->lg_layout_type);
1628 if (!ops)
1629 goto out;
1630
1631
1632
1633
1634
1635
1636
1637
1638
1639
1640
1641
1642 nfserr = nfserr_inval;
1643 if (lgp->lg_seg.length < lgp->lg_minlength ||
1644 (lgp->lg_minlength != NFS4_MAX_UINT64 &&
1645 lgp->lg_minlength > NFS4_MAX_UINT64 - lgp->lg_seg.offset) ||
1646 (lgp->lg_seg.length != NFS4_MAX_UINT64 &&
1647 lgp->lg_seg.length > NFS4_MAX_UINT64 - lgp->lg_seg.offset))
1648 goto out;
1649 if (lgp->lg_seg.length == 0)
1650 goto out;
1651
1652 nfserr = nfsd4_preprocess_layout_stateid(rqstp, cstate, &lgp->lg_sid,
1653 true, lgp->lg_layout_type, &ls);
1654 if (nfserr) {
1655 trace_nfsd_layout_get_lookup_fail(&lgp->lg_sid);
1656 goto out;
1657 }
1658
1659 nfserr = nfserr_recallconflict;
1660 if (atomic_read(&ls->ls_stid.sc_file->fi_lo_recalls))
1661 goto out_put_stid;
1662
1663 nfserr = ops->proc_layoutget(d_inode(current_fh->fh_dentry),
1664 current_fh, lgp);
1665 if (nfserr)
1666 goto out_put_stid;
1667
1668 nfserr = nfsd4_insert_layout(lgp, ls);
1669
1670 out_put_stid:
1671 mutex_unlock(&ls->ls_mutex);
1672 nfs4_put_stid(&ls->ls_stid);
1673 out:
1674 return nfserr;
1675 }
1676
1677 static void
1678 nfsd4_layoutget_release(union nfsd4_op_u *u)
1679 {
1680 kfree(u->layoutget.lg_content);
1681 }
1682
1683 static __be32
1684 nfsd4_layoutcommit(struct svc_rqst *rqstp,
1685 struct nfsd4_compound_state *cstate, union nfsd4_op_u *u)
1686 {
1687 struct nfsd4_layoutcommit *lcp = &u->layoutcommit;
1688 const struct nfsd4_layout_seg *seg = &lcp->lc_seg;
1689 struct svc_fh *current_fh = &cstate->current_fh;
1690 const struct nfsd4_layout_ops *ops;
1691 loff_t new_size = lcp->lc_last_wr + 1;
1692 struct inode *inode;
1693 struct nfs4_layout_stateid *ls;
1694 __be32 nfserr;
1695
1696 nfserr = fh_verify(rqstp, current_fh, 0, NFSD_MAY_WRITE);
1697 if (nfserr)
1698 goto out;
1699
1700 nfserr = nfserr_layoutunavailable;
1701 ops = nfsd4_layout_verify(current_fh->fh_export, lcp->lc_layout_type);
1702 if (!ops)
1703 goto out;
1704 inode = d_inode(current_fh->fh_dentry);
1705
1706 nfserr = nfserr_inval;
1707 if (new_size <= seg->offset) {
1708 dprintk("pnfsd: last write before layout segment\n");
1709 goto out;
1710 }
1711 if (new_size > seg->offset + seg->length) {
1712 dprintk("pnfsd: last write beyond layout segment\n");
1713 goto out;
1714 }
1715 if (!lcp->lc_newoffset && new_size > i_size_read(inode)) {
1716 dprintk("pnfsd: layoutcommit beyond EOF\n");
1717 goto out;
1718 }
1719
1720 nfserr = nfsd4_preprocess_layout_stateid(rqstp, cstate, &lcp->lc_sid,
1721 false, lcp->lc_layout_type,
1722 &ls);
1723 if (nfserr) {
1724 trace_nfsd_layout_commit_lookup_fail(&lcp->lc_sid);
1725
1726 if (nfserr == nfserr_bad_stateid)
1727 nfserr = nfserr_badlayout;
1728 goto out;
1729 }
1730
1731
1732 mutex_unlock(&ls->ls_mutex);
1733
1734 if (new_size > i_size_read(inode)) {
1735 lcp->lc_size_chg = 1;
1736 lcp->lc_newsize = new_size;
1737 } else {
1738 lcp->lc_size_chg = 0;
1739 }
1740
1741 nfserr = ops->proc_layoutcommit(inode, lcp);
1742 nfs4_put_stid(&ls->ls_stid);
1743 out:
1744 return nfserr;
1745 }
1746
1747 static __be32
1748 nfsd4_layoutreturn(struct svc_rqst *rqstp,
1749 struct nfsd4_compound_state *cstate, union nfsd4_op_u *u)
1750 {
1751 struct nfsd4_layoutreturn *lrp = &u->layoutreturn;
1752 struct svc_fh *current_fh = &cstate->current_fh;
1753 __be32 nfserr;
1754
1755 nfserr = fh_verify(rqstp, current_fh, 0, NFSD_MAY_NOP);
1756 if (nfserr)
1757 goto out;
1758
1759 nfserr = nfserr_layoutunavailable;
1760 if (!nfsd4_layout_verify(current_fh->fh_export, lrp->lr_layout_type))
1761 goto out;
1762
1763 switch (lrp->lr_seg.iomode) {
1764 case IOMODE_READ:
1765 case IOMODE_RW:
1766 case IOMODE_ANY:
1767 break;
1768 default:
1769 dprintk("%s: invalid iomode %d\n", __func__,
1770 lrp->lr_seg.iomode);
1771 nfserr = nfserr_inval;
1772 goto out;
1773 }
1774
1775 switch (lrp->lr_return_type) {
1776 case RETURN_FILE:
1777 nfserr = nfsd4_return_file_layouts(rqstp, cstate, lrp);
1778 break;
1779 case RETURN_FSID:
1780 case RETURN_ALL:
1781 nfserr = nfsd4_return_client_layouts(rqstp, cstate, lrp);
1782 break;
1783 default:
1784 dprintk("%s: invalid return_type %d\n", __func__,
1785 lrp->lr_return_type);
1786 nfserr = nfserr_inval;
1787 break;
1788 }
1789 out:
1790 return nfserr;
1791 }
1792 #endif
1793
1794
1795
1796
1797 static __be32
1798 nfsd4_proc_null(struct svc_rqst *rqstp)
1799 {
1800 return nfs_ok;
1801 }
1802
1803 static inline void nfsd4_increment_op_stats(u32 opnum)
1804 {
1805 if (opnum >= FIRST_NFS4_OP && opnum <= LAST_NFS4_OP)
1806 nfsdstats.nfs4_opcount[opnum]++;
1807 }
1808
1809 static const struct nfsd4_operation nfsd4_ops[];
1810
1811 static const char *nfsd4_op_name(unsigned opnum);
1812
1813
1814
1815
1816
1817
1818
1819
1820
1821
1822
1823
1824
1825 static __be32 nfs41_check_op_ordering(struct nfsd4_compoundargs *args)
1826 {
1827 struct nfsd4_op *first_op = &args->ops[0];
1828
1829
1830 if (args->minorversion == 0)
1831 return nfs_ok;
1832
1833 if (args->opcnt == 0)
1834 return nfs_ok;
1835 if (first_op->status == nfserr_op_illegal)
1836 return nfs_ok;
1837 if (!(nfsd4_ops[first_op->opnum].op_flags & ALLOWED_AS_FIRST_OP))
1838 return nfserr_op_not_in_session;
1839 if (first_op->opnum == OP_SEQUENCE)
1840 return nfs_ok;
1841
1842
1843
1844
1845
1846 if (args->opcnt != 1)
1847 return nfserr_not_only_op;
1848 return nfs_ok;
1849 }
1850
1851 const struct nfsd4_operation *OPDESC(struct nfsd4_op *op)
1852 {
1853 return &nfsd4_ops[op->opnum];
1854 }
1855
1856 bool nfsd4_cache_this_op(struct nfsd4_op *op)
1857 {
1858 if (op->opnum == OP_ILLEGAL)
1859 return false;
1860 return OPDESC(op)->op_flags & OP_CACHEME;
1861 }
1862
1863 static bool need_wrongsec_check(struct svc_rqst *rqstp)
1864 {
1865 struct nfsd4_compoundres *resp = rqstp->rq_resp;
1866 struct nfsd4_compoundargs *argp = rqstp->rq_argp;
1867 struct nfsd4_op *this = &argp->ops[resp->opcnt - 1];
1868 struct nfsd4_op *next = &argp->ops[resp->opcnt];
1869 const struct nfsd4_operation *thisd = OPDESC(this);
1870 const struct nfsd4_operation *nextd;
1871
1872
1873
1874
1875
1876 if (!(thisd->op_flags & OP_IS_PUTFH_LIKE))
1877 return false;
1878
1879
1880
1881
1882
1883 if (argp->opcnt == resp->opcnt)
1884 return false;
1885 if (next->opnum == OP_ILLEGAL)
1886 return false;
1887 nextd = OPDESC(next);
1888
1889
1890
1891
1892
1893 return !(nextd->op_flags & OP_HANDLES_WRONGSEC);
1894 }
1895
1896 static void svcxdr_init_encode(struct svc_rqst *rqstp,
1897 struct nfsd4_compoundres *resp)
1898 {
1899 struct xdr_stream *xdr = &resp->xdr;
1900 struct xdr_buf *buf = &rqstp->rq_res;
1901 struct kvec *head = buf->head;
1902
1903 xdr->buf = buf;
1904 xdr->iov = head;
1905 xdr->p = head->iov_base + head->iov_len;
1906 xdr->end = head->iov_base + PAGE_SIZE - rqstp->rq_auth_slack;
1907
1908 buf->len = buf->head[0].iov_len;
1909 xdr->scratch.iov_len = 0;
1910 xdr->page_ptr = buf->pages - 1;
1911 buf->buflen = PAGE_SIZE * (1 + rqstp->rq_page_end - buf->pages)
1912 - rqstp->rq_auth_slack;
1913 }
1914
1915
1916
1917
1918 static __be32
1919 nfsd4_proc_compound(struct svc_rqst *rqstp)
1920 {
1921 struct nfsd4_compoundargs *args = rqstp->rq_argp;
1922 struct nfsd4_compoundres *resp = rqstp->rq_resp;
1923 struct nfsd4_op *op;
1924 struct nfsd4_compound_state *cstate = &resp->cstate;
1925 struct svc_fh *current_fh = &cstate->current_fh;
1926 struct svc_fh *save_fh = &cstate->save_fh;
1927 struct nfsd_net *nn = net_generic(SVC_NET(rqstp), nfsd_net_id);
1928 __be32 status;
1929
1930 svcxdr_init_encode(rqstp, resp);
1931 resp->tagp = resp->xdr.p;
1932
1933 xdr_reserve_space(&resp->xdr, 8 + args->taglen);
1934 resp->taglen = args->taglen;
1935 resp->tag = args->tag;
1936 resp->rqstp = rqstp;
1937 cstate->minorversion = args->minorversion;
1938 fh_init(current_fh, NFS4_FHSIZE);
1939 fh_init(save_fh, NFS4_FHSIZE);
1940
1941
1942
1943
1944 clear_bit(RQ_USEDEFERRAL, &rqstp->rq_flags);
1945
1946
1947
1948
1949 status = nfserr_minor_vers_mismatch;
1950 if (nfsd_minorversion(nn, args->minorversion, NFSD_TEST) <= 0)
1951 goto out;
1952 status = nfserr_resource;
1953 if (args->opcnt > NFSD_MAX_OPS_PER_COMPOUND)
1954 goto out;
1955
1956 status = nfs41_check_op_ordering(args);
1957 if (status) {
1958 op = &args->ops[0];
1959 op->status = status;
1960 resp->opcnt = 1;
1961 goto encode_op;
1962 }
1963
1964 trace_nfsd_compound(rqstp, args->opcnt);
1965 while (!status && resp->opcnt < args->opcnt) {
1966 op = &args->ops[resp->opcnt++];
1967
1968
1969
1970
1971
1972
1973 if (op->status) {
1974 if (op->opnum == OP_OPEN)
1975 op->status = nfsd4_open_omfg(rqstp, cstate, op);
1976 goto encode_op;
1977 }
1978
1979 if (!current_fh->fh_dentry) {
1980 if (!(op->opdesc->op_flags & ALLOWED_WITHOUT_FH)) {
1981 op->status = nfserr_nofilehandle;
1982 goto encode_op;
1983 }
1984 } else if (current_fh->fh_export->ex_fslocs.migrated &&
1985 !(op->opdesc->op_flags & ALLOWED_ON_ABSENT_FS)) {
1986 op->status = nfserr_moved;
1987 goto encode_op;
1988 }
1989
1990 fh_clear_wcc(current_fh);
1991
1992
1993 if (op->opdesc->op_flags & OP_MODIFIES_SOMETHING) {
1994
1995
1996
1997
1998 u32 plen = op->opdesc->op_rsize_bop(rqstp, op);
1999
2000
2001
2002
2003 if (resp->opcnt < args->opcnt)
2004 plen += COMPOUND_ERR_SLACK_SPACE;
2005 op->status = nfsd4_check_resp_size(resp, plen);
2006 }
2007
2008 if (op->status)
2009 goto encode_op;
2010
2011 if (op->opdesc->op_get_currentstateid)
2012 op->opdesc->op_get_currentstateid(cstate, &op->u);
2013 op->status = op->opdesc->op_func(rqstp, cstate, &op->u);
2014
2015
2016 if (cstate->status == nfserr_replay_cache) {
2017 dprintk("%s NFS4.1 replay from cache\n", __func__);
2018 status = op->status;
2019 goto out;
2020 }
2021 if (!op->status) {
2022 if (op->opdesc->op_set_currentstateid)
2023 op->opdesc->op_set_currentstateid(cstate, &op->u);
2024
2025 if (op->opdesc->op_flags & OP_CLEAR_STATEID)
2026 clear_current_stateid(cstate);
2027
2028 if (need_wrongsec_check(rqstp))
2029 op->status = check_nfsd_access(current_fh->fh_export, rqstp);
2030 }
2031 encode_op:
2032 if (op->status == nfserr_replay_me) {
2033 op->replay = &cstate->replay_owner->so_replay;
2034 nfsd4_encode_replay(&resp->xdr, op);
2035 status = op->status = op->replay->rp_status;
2036 } else {
2037 nfsd4_encode_operation(resp, op);
2038 status = op->status;
2039 }
2040
2041 trace_nfsd_compound_status(args->opcnt, resp->opcnt, status,
2042 nfsd4_op_name(op->opnum));
2043
2044 nfsd4_cstate_clear_replay(cstate);
2045 nfsd4_increment_op_stats(op->opnum);
2046 }
2047
2048 cstate->status = status;
2049 fh_put(current_fh);
2050 fh_put(save_fh);
2051 BUG_ON(cstate->replay_owner);
2052 out:
2053
2054 set_bit(RQ_USEDEFERRAL, &rqstp->rq_flags);
2055 dprintk("nfsv4 compound returned %d\n", ntohl(status));
2056 return status;
2057 }
2058
2059 #define op_encode_hdr_size (2)
2060 #define op_encode_stateid_maxsz (XDR_QUADLEN(NFS4_STATEID_SIZE))
2061 #define op_encode_verifier_maxsz (XDR_QUADLEN(NFS4_VERIFIER_SIZE))
2062 #define op_encode_change_info_maxsz (5)
2063 #define nfs4_fattr_bitmap_maxsz (4)
2064
2065
2066 #define op_encode_lockowner_maxsz (0)
2067 #define op_encode_lock_denied_maxsz (8 + op_encode_lockowner_maxsz)
2068
2069 #define nfs4_owner_maxsz (1 + XDR_QUADLEN(IDMAP_NAMESZ))
2070
2071 #define op_encode_ace_maxsz (3 + nfs4_owner_maxsz)
2072 #define op_encode_delegation_maxsz (1 + op_encode_stateid_maxsz + 1 + \
2073 op_encode_ace_maxsz)
2074
2075 #define op_encode_channel_attrs_maxsz (6 + 1 + 1)
2076
2077 static inline u32 nfsd4_only_status_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
2078 {
2079 return (op_encode_hdr_size) * sizeof(__be32);
2080 }
2081
2082 static inline u32 nfsd4_status_stateid_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
2083 {
2084 return (op_encode_hdr_size + op_encode_stateid_maxsz)* sizeof(__be32);
2085 }
2086
2087 static inline u32 nfsd4_access_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
2088 {
2089
2090 return (op_encode_hdr_size + 2)* sizeof(__be32);
2091 }
2092
2093 static inline u32 nfsd4_commit_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
2094 {
2095 return (op_encode_hdr_size + op_encode_verifier_maxsz) * sizeof(__be32);
2096 }
2097
2098 static inline u32 nfsd4_create_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
2099 {
2100 return (op_encode_hdr_size + op_encode_change_info_maxsz
2101 + nfs4_fattr_bitmap_maxsz) * sizeof(__be32);
2102 }
2103
2104
2105
2106
2107
2108
2109 static inline u32 nfsd4_getattr_rsize(struct svc_rqst *rqstp,
2110 struct nfsd4_op *op)
2111 {
2112 u32 *bmap = op->u.getattr.ga_bmval;
2113 u32 bmap0 = bmap[0], bmap1 = bmap[1], bmap2 = bmap[2];
2114 u32 ret = 0;
2115
2116 if (bmap0 & FATTR4_WORD0_ACL)
2117 return svc_max_payload(rqstp);
2118 if (bmap0 & FATTR4_WORD0_FS_LOCATIONS)
2119 return svc_max_payload(rqstp);
2120
2121 if (bmap1 & FATTR4_WORD1_OWNER) {
2122 ret += IDMAP_NAMESZ + 4;
2123 bmap1 &= ~FATTR4_WORD1_OWNER;
2124 }
2125 if (bmap1 & FATTR4_WORD1_OWNER_GROUP) {
2126 ret += IDMAP_NAMESZ + 4;
2127 bmap1 &= ~FATTR4_WORD1_OWNER_GROUP;
2128 }
2129 if (bmap0 & FATTR4_WORD0_FILEHANDLE) {
2130 ret += NFS4_FHSIZE + 4;
2131 bmap0 &= ~FATTR4_WORD0_FILEHANDLE;
2132 }
2133 if (bmap2 & FATTR4_WORD2_SECURITY_LABEL) {
2134 ret += NFS4_MAXLABELLEN + 12;
2135 bmap2 &= ~FATTR4_WORD2_SECURITY_LABEL;
2136 }
2137
2138
2139
2140
2141 ret += 16 * (hweight32(bmap0) + hweight32(bmap1) + hweight32(bmap2));
2142
2143 ret += 20;
2144 return ret;
2145 }
2146
2147 static inline u32 nfsd4_getfh_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
2148 {
2149 return (op_encode_hdr_size + 1) * sizeof(__be32) + NFS4_FHSIZE;
2150 }
2151
2152 static inline u32 nfsd4_link_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
2153 {
2154 return (op_encode_hdr_size + op_encode_change_info_maxsz)
2155 * sizeof(__be32);
2156 }
2157
2158 static inline u32 nfsd4_lock_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
2159 {
2160 return (op_encode_hdr_size + op_encode_lock_denied_maxsz)
2161 * sizeof(__be32);
2162 }
2163
2164 static inline u32 nfsd4_open_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
2165 {
2166 return (op_encode_hdr_size + op_encode_stateid_maxsz
2167 + op_encode_change_info_maxsz + 1
2168 + nfs4_fattr_bitmap_maxsz
2169 + op_encode_delegation_maxsz) * sizeof(__be32);
2170 }
2171
2172 static inline u32 nfsd4_read_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
2173 {
2174 u32 maxcount = 0, rlen = 0;
2175
2176 maxcount = svc_max_payload(rqstp);
2177 rlen = min(op->u.read.rd_length, maxcount);
2178
2179 return (op_encode_hdr_size + 2 + XDR_QUADLEN(rlen)) * sizeof(__be32);
2180 }
2181
2182 static inline u32 nfsd4_readdir_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
2183 {
2184 u32 maxcount = 0, rlen = 0;
2185
2186 maxcount = svc_max_payload(rqstp);
2187 rlen = min(op->u.readdir.rd_maxcount, maxcount);
2188
2189 return (op_encode_hdr_size + op_encode_verifier_maxsz +
2190 XDR_QUADLEN(rlen)) * sizeof(__be32);
2191 }
2192
2193 static inline u32 nfsd4_readlink_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
2194 {
2195 return (op_encode_hdr_size + 1) * sizeof(__be32) + PAGE_SIZE;
2196 }
2197
2198 static inline u32 nfsd4_remove_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
2199 {
2200 return (op_encode_hdr_size + op_encode_change_info_maxsz)
2201 * sizeof(__be32);
2202 }
2203
2204 static inline u32 nfsd4_rename_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
2205 {
2206 return (op_encode_hdr_size + op_encode_change_info_maxsz
2207 + op_encode_change_info_maxsz) * sizeof(__be32);
2208 }
2209
2210 static inline u32 nfsd4_sequence_rsize(struct svc_rqst *rqstp,
2211 struct nfsd4_op *op)
2212 {
2213 return (op_encode_hdr_size
2214 + XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + 5) * sizeof(__be32);
2215 }
2216
2217 static inline u32 nfsd4_test_stateid_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
2218 {
2219 return (op_encode_hdr_size + 1 + op->u.test_stateid.ts_num_ids)
2220 * sizeof(__be32);
2221 }
2222
2223 static inline u32 nfsd4_setattr_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
2224 {
2225 return (op_encode_hdr_size + nfs4_fattr_bitmap_maxsz) * sizeof(__be32);
2226 }
2227
2228 static inline u32 nfsd4_secinfo_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
2229 {
2230 return (op_encode_hdr_size + RPC_AUTH_MAXFLAVOR *
2231 (4 + XDR_QUADLEN(GSS_OID_MAX_LEN))) * sizeof(__be32);
2232 }
2233
2234 static inline u32 nfsd4_setclientid_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
2235 {
2236 return (op_encode_hdr_size + 2 + XDR_QUADLEN(NFS4_VERIFIER_SIZE)) *
2237 sizeof(__be32);
2238 }
2239
2240 static inline u32 nfsd4_write_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
2241 {
2242 return (op_encode_hdr_size + 2 + op_encode_verifier_maxsz) * sizeof(__be32);
2243 }
2244
2245 static inline u32 nfsd4_exchange_id_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
2246 {
2247 return (op_encode_hdr_size + 2 + 1 + \
2248 1 + 1 + \
2249 4 + \
2250 2 + \
2251 \
2252 XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + 1 +\
2253 \
2254 XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + 1 +\
2255 1 + \
2256 0 ) * sizeof(__be32);
2257 }
2258
2259 static inline u32 nfsd4_bind_conn_to_session_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
2260 {
2261 return (op_encode_hdr_size + \
2262 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + \
2263 2 ) * sizeof(__be32);
2264 }
2265
2266 static inline u32 nfsd4_create_session_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
2267 {
2268 return (op_encode_hdr_size + \
2269 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + \
2270 2 + \
2271 op_encode_channel_attrs_maxsz + \
2272 op_encode_channel_attrs_maxsz) * sizeof(__be32);
2273 }
2274
2275 static inline u32 nfsd4_copy_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
2276 {
2277 return (op_encode_hdr_size +
2278 1 +
2279 op_encode_stateid_maxsz +
2280 2 +
2281 1 +
2282 op_encode_verifier_maxsz +
2283 1 +
2284 1 ) * sizeof(__be32);
2285 }
2286
2287 static inline u32 nfsd4_offload_status_rsize(struct svc_rqst *rqstp,
2288 struct nfsd4_op *op)
2289 {
2290 return (op_encode_hdr_size +
2291 2 +
2292 1 ) * sizeof(__be32);
2293 }
2294
2295 #ifdef CONFIG_NFSD_PNFS
2296 static inline u32 nfsd4_getdeviceinfo_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
2297 {
2298 u32 maxcount = 0, rlen = 0;
2299
2300 maxcount = svc_max_payload(rqstp);
2301 rlen = min(op->u.getdeviceinfo.gd_maxcount, maxcount);
2302
2303 return (op_encode_hdr_size +
2304 1 +
2305 XDR_QUADLEN(rlen) +
2306 2 ) * sizeof(__be32);
2307 }
2308
2309
2310
2311
2312
2313 #define MAX_LAYOUT_SIZE 128
2314 static inline u32 nfsd4_layoutget_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
2315 {
2316 return (op_encode_hdr_size +
2317 1 +
2318 op_encode_stateid_maxsz +
2319 1 +
2320 MAX_LAYOUT_SIZE) * sizeof(__be32);
2321 }
2322
2323 static inline u32 nfsd4_layoutcommit_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
2324 {
2325 return (op_encode_hdr_size +
2326 1 +
2327 2 ) * sizeof(__be32);
2328 }
2329
2330 static inline u32 nfsd4_layoutreturn_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
2331 {
2332 return (op_encode_hdr_size +
2333 1 +
2334 op_encode_stateid_maxsz) * sizeof(__be32);
2335 }
2336 #endif
2337
2338
2339 static inline u32 nfsd4_seek_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
2340 {
2341 return (op_encode_hdr_size + 3) * sizeof(__be32);
2342 }
2343
2344 static const struct nfsd4_operation nfsd4_ops[] = {
2345 [OP_ACCESS] = {
2346 .op_func = nfsd4_access,
2347 .op_name = "OP_ACCESS",
2348 .op_rsize_bop = nfsd4_access_rsize,
2349 },
2350 [OP_CLOSE] = {
2351 .op_func = nfsd4_close,
2352 .op_flags = OP_MODIFIES_SOMETHING,
2353 .op_name = "OP_CLOSE",
2354 .op_rsize_bop = nfsd4_status_stateid_rsize,
2355 .op_get_currentstateid = nfsd4_get_closestateid,
2356 .op_set_currentstateid = nfsd4_set_closestateid,
2357 },
2358 [OP_COMMIT] = {
2359 .op_func = nfsd4_commit,
2360 .op_flags = OP_MODIFIES_SOMETHING,
2361 .op_name = "OP_COMMIT",
2362 .op_rsize_bop = nfsd4_commit_rsize,
2363 },
2364 [OP_CREATE] = {
2365 .op_func = nfsd4_create,
2366 .op_flags = OP_MODIFIES_SOMETHING | OP_CACHEME | OP_CLEAR_STATEID,
2367 .op_name = "OP_CREATE",
2368 .op_rsize_bop = nfsd4_create_rsize,
2369 },
2370 [OP_DELEGRETURN] = {
2371 .op_func = nfsd4_delegreturn,
2372 .op_flags = OP_MODIFIES_SOMETHING,
2373 .op_name = "OP_DELEGRETURN",
2374 .op_rsize_bop = nfsd4_only_status_rsize,
2375 .op_get_currentstateid = nfsd4_get_delegreturnstateid,
2376 },
2377 [OP_GETATTR] = {
2378 .op_func = nfsd4_getattr,
2379 .op_flags = ALLOWED_ON_ABSENT_FS,
2380 .op_rsize_bop = nfsd4_getattr_rsize,
2381 .op_name = "OP_GETATTR",
2382 },
2383 [OP_GETFH] = {
2384 .op_func = nfsd4_getfh,
2385 .op_name = "OP_GETFH",
2386 .op_rsize_bop = nfsd4_getfh_rsize,
2387 },
2388 [OP_LINK] = {
2389 .op_func = nfsd4_link,
2390 .op_flags = ALLOWED_ON_ABSENT_FS | OP_MODIFIES_SOMETHING
2391 | OP_CACHEME,
2392 .op_name = "OP_LINK",
2393 .op_rsize_bop = nfsd4_link_rsize,
2394 },
2395 [OP_LOCK] = {
2396 .op_func = nfsd4_lock,
2397 .op_flags = OP_MODIFIES_SOMETHING |
2398 OP_NONTRIVIAL_ERROR_ENCODE,
2399 .op_name = "OP_LOCK",
2400 .op_rsize_bop = nfsd4_lock_rsize,
2401 .op_set_currentstateid = nfsd4_set_lockstateid,
2402 },
2403 [OP_LOCKT] = {
2404 .op_func = nfsd4_lockt,
2405 .op_flags = OP_NONTRIVIAL_ERROR_ENCODE,
2406 .op_name = "OP_LOCKT",
2407 .op_rsize_bop = nfsd4_lock_rsize,
2408 },
2409 [OP_LOCKU] = {
2410 .op_func = nfsd4_locku,
2411 .op_flags = OP_MODIFIES_SOMETHING,
2412 .op_name = "OP_LOCKU",
2413 .op_rsize_bop = nfsd4_status_stateid_rsize,
2414 .op_get_currentstateid = nfsd4_get_lockustateid,
2415 },
2416 [OP_LOOKUP] = {
2417 .op_func = nfsd4_lookup,
2418 .op_flags = OP_HANDLES_WRONGSEC | OP_CLEAR_STATEID,
2419 .op_name = "OP_LOOKUP",
2420 .op_rsize_bop = nfsd4_only_status_rsize,
2421 },
2422 [OP_LOOKUPP] = {
2423 .op_func = nfsd4_lookupp,
2424 .op_flags = OP_HANDLES_WRONGSEC | OP_CLEAR_STATEID,
2425 .op_name = "OP_LOOKUPP",
2426 .op_rsize_bop = nfsd4_only_status_rsize,
2427 },
2428 [OP_NVERIFY] = {
2429 .op_func = nfsd4_nverify,
2430 .op_name = "OP_NVERIFY",
2431 .op_rsize_bop = nfsd4_only_status_rsize,
2432 },
2433 [OP_OPEN] = {
2434 .op_func = nfsd4_open,
2435 .op_flags = OP_HANDLES_WRONGSEC | OP_MODIFIES_SOMETHING,
2436 .op_name = "OP_OPEN",
2437 .op_rsize_bop = nfsd4_open_rsize,
2438 .op_set_currentstateid = nfsd4_set_openstateid,
2439 },
2440 [OP_OPEN_CONFIRM] = {
2441 .op_func = nfsd4_open_confirm,
2442 .op_flags = OP_MODIFIES_SOMETHING,
2443 .op_name = "OP_OPEN_CONFIRM",
2444 .op_rsize_bop = nfsd4_status_stateid_rsize,
2445 },
2446 [OP_OPEN_DOWNGRADE] = {
2447 .op_func = nfsd4_open_downgrade,
2448 .op_flags = OP_MODIFIES_SOMETHING,
2449 .op_name = "OP_OPEN_DOWNGRADE",
2450 .op_rsize_bop = nfsd4_status_stateid_rsize,
2451 .op_get_currentstateid = nfsd4_get_opendowngradestateid,
2452 .op_set_currentstateid = nfsd4_set_opendowngradestateid,
2453 },
2454 [OP_PUTFH] = {
2455 .op_func = nfsd4_putfh,
2456 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS
2457 | OP_IS_PUTFH_LIKE | OP_CLEAR_STATEID,
2458 .op_name = "OP_PUTFH",
2459 .op_rsize_bop = nfsd4_only_status_rsize,
2460 },
2461 [OP_PUTPUBFH] = {
2462 .op_func = nfsd4_putrootfh,
2463 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS
2464 | OP_IS_PUTFH_LIKE | OP_CLEAR_STATEID,
2465 .op_name = "OP_PUTPUBFH",
2466 .op_rsize_bop = nfsd4_only_status_rsize,
2467 },
2468 [OP_PUTROOTFH] = {
2469 .op_func = nfsd4_putrootfh,
2470 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS
2471 | OP_IS_PUTFH_LIKE | OP_CLEAR_STATEID,
2472 .op_name = "OP_PUTROOTFH",
2473 .op_rsize_bop = nfsd4_only_status_rsize,
2474 },
2475 [OP_READ] = {
2476 .op_func = nfsd4_read,
2477 .op_release = nfsd4_read_release,
2478 .op_name = "OP_READ",
2479 .op_rsize_bop = nfsd4_read_rsize,
2480 .op_get_currentstateid = nfsd4_get_readstateid,
2481 },
2482 [OP_READDIR] = {
2483 .op_func = nfsd4_readdir,
2484 .op_name = "OP_READDIR",
2485 .op_rsize_bop = nfsd4_readdir_rsize,
2486 },
2487 [OP_READLINK] = {
2488 .op_func = nfsd4_readlink,
2489 .op_name = "OP_READLINK",
2490 .op_rsize_bop = nfsd4_readlink_rsize,
2491 },
2492 [OP_REMOVE] = {
2493 .op_func = nfsd4_remove,
2494 .op_flags = OP_MODIFIES_SOMETHING | OP_CACHEME,
2495 .op_name = "OP_REMOVE",
2496 .op_rsize_bop = nfsd4_remove_rsize,
2497 },
2498 [OP_RENAME] = {
2499 .op_func = nfsd4_rename,
2500 .op_flags = OP_MODIFIES_SOMETHING | OP_CACHEME,
2501 .op_name = "OP_RENAME",
2502 .op_rsize_bop = nfsd4_rename_rsize,
2503 },
2504 [OP_RENEW] = {
2505 .op_func = nfsd4_renew,
2506 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS
2507 | OP_MODIFIES_SOMETHING,
2508 .op_name = "OP_RENEW",
2509 .op_rsize_bop = nfsd4_only_status_rsize,
2510
2511 },
2512 [OP_RESTOREFH] = {
2513 .op_func = nfsd4_restorefh,
2514 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS
2515 | OP_IS_PUTFH_LIKE | OP_MODIFIES_SOMETHING,
2516 .op_name = "OP_RESTOREFH",
2517 .op_rsize_bop = nfsd4_only_status_rsize,
2518 },
2519 [OP_SAVEFH] = {
2520 .op_func = nfsd4_savefh,
2521 .op_flags = OP_HANDLES_WRONGSEC | OP_MODIFIES_SOMETHING,
2522 .op_name = "OP_SAVEFH",
2523 .op_rsize_bop = nfsd4_only_status_rsize,
2524 },
2525 [OP_SECINFO] = {
2526 .op_func = nfsd4_secinfo,
2527 .op_release = nfsd4_secinfo_release,
2528 .op_flags = OP_HANDLES_WRONGSEC,
2529 .op_name = "OP_SECINFO",
2530 .op_rsize_bop = nfsd4_secinfo_rsize,
2531 },
2532 [OP_SETATTR] = {
2533 .op_func = nfsd4_setattr,
2534 .op_name = "OP_SETATTR",
2535 .op_flags = OP_MODIFIES_SOMETHING | OP_CACHEME
2536 | OP_NONTRIVIAL_ERROR_ENCODE,
2537 .op_rsize_bop = nfsd4_setattr_rsize,
2538 .op_get_currentstateid = nfsd4_get_setattrstateid,
2539 },
2540 [OP_SETCLIENTID] = {
2541 .op_func = nfsd4_setclientid,
2542 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS
2543 | OP_MODIFIES_SOMETHING | OP_CACHEME
2544 | OP_NONTRIVIAL_ERROR_ENCODE,
2545 .op_name = "OP_SETCLIENTID",
2546 .op_rsize_bop = nfsd4_setclientid_rsize,
2547 },
2548 [OP_SETCLIENTID_CONFIRM] = {
2549 .op_func = nfsd4_setclientid_confirm,
2550 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS
2551 | OP_MODIFIES_SOMETHING | OP_CACHEME,
2552 .op_name = "OP_SETCLIENTID_CONFIRM",
2553 .op_rsize_bop = nfsd4_only_status_rsize,
2554 },
2555 [OP_VERIFY] = {
2556 .op_func = nfsd4_verify,
2557 .op_name = "OP_VERIFY",
2558 .op_rsize_bop = nfsd4_only_status_rsize,
2559 },
2560 [OP_WRITE] = {
2561 .op_func = nfsd4_write,
2562 .op_flags = OP_MODIFIES_SOMETHING | OP_CACHEME,
2563 .op_name = "OP_WRITE",
2564 .op_rsize_bop = nfsd4_write_rsize,
2565 .op_get_currentstateid = nfsd4_get_writestateid,
2566 },
2567 [OP_RELEASE_LOCKOWNER] = {
2568 .op_func = nfsd4_release_lockowner,
2569 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS
2570 | OP_MODIFIES_SOMETHING,
2571 .op_name = "OP_RELEASE_LOCKOWNER",
2572 .op_rsize_bop = nfsd4_only_status_rsize,
2573 },
2574
2575
2576 [OP_EXCHANGE_ID] = {
2577 .op_func = nfsd4_exchange_id,
2578 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP
2579 | OP_MODIFIES_SOMETHING,
2580 .op_name = "OP_EXCHANGE_ID",
2581 .op_rsize_bop = nfsd4_exchange_id_rsize,
2582 },
2583 [OP_BACKCHANNEL_CTL] = {
2584 .op_func = nfsd4_backchannel_ctl,
2585 .op_flags = ALLOWED_WITHOUT_FH | OP_MODIFIES_SOMETHING,
2586 .op_name = "OP_BACKCHANNEL_CTL",
2587 .op_rsize_bop = nfsd4_only_status_rsize,
2588 },
2589 [OP_BIND_CONN_TO_SESSION] = {
2590 .op_func = nfsd4_bind_conn_to_session,
2591 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP
2592 | OP_MODIFIES_SOMETHING,
2593 .op_name = "OP_BIND_CONN_TO_SESSION",
2594 .op_rsize_bop = nfsd4_bind_conn_to_session_rsize,
2595 },
2596 [OP_CREATE_SESSION] = {
2597 .op_func = nfsd4_create_session,
2598 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP
2599 | OP_MODIFIES_SOMETHING,
2600 .op_name = "OP_CREATE_SESSION",
2601 .op_rsize_bop = nfsd4_create_session_rsize,
2602 },
2603 [OP_DESTROY_SESSION] = {
2604 .op_func = nfsd4_destroy_session,
2605 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP
2606 | OP_MODIFIES_SOMETHING,
2607 .op_name = "OP_DESTROY_SESSION",
2608 .op_rsize_bop = nfsd4_only_status_rsize,
2609 },
2610 [OP_SEQUENCE] = {
2611 .op_func = nfsd4_sequence,
2612 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP,
2613 .op_name = "OP_SEQUENCE",
2614 .op_rsize_bop = nfsd4_sequence_rsize,
2615 },
2616 [OP_DESTROY_CLIENTID] = {
2617 .op_func = nfsd4_destroy_clientid,
2618 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP
2619 | OP_MODIFIES_SOMETHING,
2620 .op_name = "OP_DESTROY_CLIENTID",
2621 .op_rsize_bop = nfsd4_only_status_rsize,
2622 },
2623 [OP_RECLAIM_COMPLETE] = {
2624 .op_func = nfsd4_reclaim_complete,
2625 .op_flags = ALLOWED_WITHOUT_FH | OP_MODIFIES_SOMETHING,
2626 .op_name = "OP_RECLAIM_COMPLETE",
2627 .op_rsize_bop = nfsd4_only_status_rsize,
2628 },
2629 [OP_SECINFO_NO_NAME] = {
2630 .op_func = nfsd4_secinfo_no_name,
2631 .op_release = nfsd4_secinfo_no_name_release,
2632 .op_flags = OP_HANDLES_WRONGSEC,
2633 .op_name = "OP_SECINFO_NO_NAME",
2634 .op_rsize_bop = nfsd4_secinfo_rsize,
2635 },
2636 [OP_TEST_STATEID] = {
2637 .op_func = nfsd4_test_stateid,
2638 .op_flags = ALLOWED_WITHOUT_FH,
2639 .op_name = "OP_TEST_STATEID",
2640 .op_rsize_bop = nfsd4_test_stateid_rsize,
2641 },
2642 [OP_FREE_STATEID] = {
2643 .op_func = nfsd4_free_stateid,
2644 .op_flags = ALLOWED_WITHOUT_FH | OP_MODIFIES_SOMETHING,
2645 .op_name = "OP_FREE_STATEID",
2646 .op_get_currentstateid = nfsd4_get_freestateid,
2647 .op_rsize_bop = nfsd4_only_status_rsize,
2648 },
2649 #ifdef CONFIG_NFSD_PNFS
2650 [OP_GETDEVICEINFO] = {
2651 .op_func = nfsd4_getdeviceinfo,
2652 .op_release = nfsd4_getdeviceinfo_release,
2653 .op_flags = ALLOWED_WITHOUT_FH,
2654 .op_name = "OP_GETDEVICEINFO",
2655 .op_rsize_bop = nfsd4_getdeviceinfo_rsize,
2656 },
2657 [OP_LAYOUTGET] = {
2658 .op_func = nfsd4_layoutget,
2659 .op_release = nfsd4_layoutget_release,
2660 .op_flags = OP_MODIFIES_SOMETHING,
2661 .op_name = "OP_LAYOUTGET",
2662 .op_rsize_bop = nfsd4_layoutget_rsize,
2663 },
2664 [OP_LAYOUTCOMMIT] = {
2665 .op_func = nfsd4_layoutcommit,
2666 .op_flags = OP_MODIFIES_SOMETHING,
2667 .op_name = "OP_LAYOUTCOMMIT",
2668 .op_rsize_bop = nfsd4_layoutcommit_rsize,
2669 },
2670 [OP_LAYOUTRETURN] = {
2671 .op_func = nfsd4_layoutreturn,
2672 .op_flags = OP_MODIFIES_SOMETHING,
2673 .op_name = "OP_LAYOUTRETURN",
2674 .op_rsize_bop = nfsd4_layoutreturn_rsize,
2675 },
2676 #endif
2677
2678
2679 [OP_ALLOCATE] = {
2680 .op_func = nfsd4_allocate,
2681 .op_flags = OP_MODIFIES_SOMETHING,
2682 .op_name = "OP_ALLOCATE",
2683 .op_rsize_bop = nfsd4_only_status_rsize,
2684 },
2685 [OP_DEALLOCATE] = {
2686 .op_func = nfsd4_deallocate,
2687 .op_flags = OP_MODIFIES_SOMETHING,
2688 .op_name = "OP_DEALLOCATE",
2689 .op_rsize_bop = nfsd4_only_status_rsize,
2690 },
2691 [OP_CLONE] = {
2692 .op_func = nfsd4_clone,
2693 .op_flags = OP_MODIFIES_SOMETHING,
2694 .op_name = "OP_CLONE",
2695 .op_rsize_bop = nfsd4_only_status_rsize,
2696 },
2697 [OP_COPY] = {
2698 .op_func = nfsd4_copy,
2699 .op_flags = OP_MODIFIES_SOMETHING,
2700 .op_name = "OP_COPY",
2701 .op_rsize_bop = nfsd4_copy_rsize,
2702 },
2703 [OP_SEEK] = {
2704 .op_func = nfsd4_seek,
2705 .op_name = "OP_SEEK",
2706 .op_rsize_bop = nfsd4_seek_rsize,
2707 },
2708 [OP_OFFLOAD_STATUS] = {
2709 .op_func = nfsd4_offload_status,
2710 .op_name = "OP_OFFLOAD_STATUS",
2711 .op_rsize_bop = nfsd4_offload_status_rsize,
2712 },
2713 [OP_OFFLOAD_CANCEL] = {
2714 .op_func = nfsd4_offload_cancel,
2715 .op_flags = OP_MODIFIES_SOMETHING,
2716 .op_name = "OP_OFFLOAD_CANCEL",
2717 .op_rsize_bop = nfsd4_only_status_rsize,
2718 },
2719 };
2720
2721
2722
2723
2724
2725
2726
2727
2728
2729
2730
2731 bool nfsd4_spo_must_allow(struct svc_rqst *rqstp)
2732 {
2733 struct nfsd4_compoundres *resp = rqstp->rq_resp;
2734 struct nfsd4_compoundargs *argp = rqstp->rq_argp;
2735 struct nfsd4_op *this = &argp->ops[resp->opcnt - 1];
2736 struct nfsd4_compound_state *cstate = &resp->cstate;
2737 struct nfs4_op_map *allow = &cstate->clp->cl_spo_must_allow;
2738 u32 opiter;
2739
2740 if (!cstate->minorversion)
2741 return false;
2742
2743 if (cstate->spo_must_allowed == true)
2744 return true;
2745
2746 opiter = resp->opcnt;
2747 while (opiter < argp->opcnt) {
2748 this = &argp->ops[opiter++];
2749 if (test_bit(this->opnum, allow->u.longs) &&
2750 cstate->clp->cl_mach_cred &&
2751 nfsd4_mach_creds_match(cstate->clp, rqstp)) {
2752 cstate->spo_must_allowed = true;
2753 return true;
2754 }
2755 }
2756 cstate->spo_must_allowed = false;
2757 return false;
2758 }
2759
2760 int nfsd4_max_reply(struct svc_rqst *rqstp, struct nfsd4_op *op)
2761 {
2762 if (op->opnum == OP_ILLEGAL || op->status == nfserr_notsupp)
2763 return op_encode_hdr_size * sizeof(__be32);
2764
2765 BUG_ON(OPDESC(op)->op_rsize_bop == NULL);
2766 return OPDESC(op)->op_rsize_bop(rqstp, op);
2767 }
2768
2769 void warn_on_nonidempotent_op(struct nfsd4_op *op)
2770 {
2771 if (OPDESC(op)->op_flags & OP_MODIFIES_SOMETHING) {
2772 pr_err("unable to encode reply to nonidempotent op %d (%s)\n",
2773 op->opnum, nfsd4_op_name(op->opnum));
2774 WARN_ON_ONCE(1);
2775 }
2776 }
2777
2778 static const char *nfsd4_op_name(unsigned opnum)
2779 {
2780 if (opnum < ARRAY_SIZE(nfsd4_ops))
2781 return nfsd4_ops[opnum].op_name;
2782 return "unknown_operation";
2783 }
2784
2785 #define nfsd4_voidres nfsd4_voidargs
2786 struct nfsd4_voidargs { int dummy; };
2787
2788 static const struct svc_procedure nfsd_procedures4[2] = {
2789 [NFSPROC4_NULL] = {
2790 .pc_func = nfsd4_proc_null,
2791 .pc_encode = nfs4svc_encode_voidres,
2792 .pc_argsize = sizeof(struct nfsd4_voidargs),
2793 .pc_ressize = sizeof(struct nfsd4_voidres),
2794 .pc_cachetype = RC_NOCACHE,
2795 .pc_xdrressize = 1,
2796 },
2797 [NFSPROC4_COMPOUND] = {
2798 .pc_func = nfsd4_proc_compound,
2799 .pc_decode = nfs4svc_decode_compoundargs,
2800 .pc_encode = nfs4svc_encode_compoundres,
2801 .pc_argsize = sizeof(struct nfsd4_compoundargs),
2802 .pc_ressize = sizeof(struct nfsd4_compoundres),
2803 .pc_release = nfsd4_release_compoundargs,
2804 .pc_cachetype = RC_NOCACHE,
2805 .pc_xdrressize = NFSD_BUFSIZE/4,
2806 },
2807 };
2808
2809 static unsigned int nfsd_count3[ARRAY_SIZE(nfsd_procedures4)];
2810 const struct svc_version nfsd_version4 = {
2811 .vs_vers = 4,
2812 .vs_nproc = 2,
2813 .vs_proc = nfsd_procedures4,
2814 .vs_count = nfsd_count3,
2815 .vs_dispatch = nfsd_dispatch,
2816 .vs_xdrsize = NFS4_SVC_XDRSIZE,
2817 .vs_rpcb_optnl = true,
2818 .vs_need_cong_ctrl = true,
2819 };
2820
2821
2822
2823
2824
2825