2 * Server-side procedures for NFSv4.
4 * Copyright (c) 2002 The Regents of the University of Michigan.
7 * Kendrick Smith <kmsmith@umich.edu>
8 * Andy Adamson <andros@umich.edu>
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
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.
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.
35 #include <linux/fs_struct.h>
36 #include <linux/file.h>
37 #include <linux/falloc.h>
38 #include <linux/slab.h>
44 #include "current_stateid.h"
50 #ifdef CONFIG_NFSD_V4_SECURITY_LABEL
51 #include <linux/security.h>
54 nfsd4_security_inode_setsecctx(struct svc_fh
*resfh
, struct xdr_netobj
*label
, u32
*bmval
)
56 struct inode
*inode
= d_inode(resfh
->fh_dentry
);
60 status
= security_inode_setsecctx(resfh
->fh_dentry
,
61 label
->data
, label
->len
);
66 * XXX: We should really fail the whole open, but we may
67 * already have created a new file, so it may be too
68 * late. For now this seems the least of evils:
70 bmval
[2] &= ~FATTR4_WORD2_SECURITY_LABEL
;
76 nfsd4_security_inode_setsecctx(struct svc_fh
*resfh
, struct xdr_netobj
*label
, u32
*bmval
)
80 #define NFSDDBG_FACILITY NFSDDBG_PROC
82 static u32 nfsd_attrmask
[] = {
83 NFSD_WRITEABLE_ATTRS_WORD0
,
84 NFSD_WRITEABLE_ATTRS_WORD1
,
85 NFSD_WRITEABLE_ATTRS_WORD2
88 static u32 nfsd41_ex_attrmask
[] = {
89 NFSD_SUPPATTR_EXCLCREAT_WORD0
,
90 NFSD_SUPPATTR_EXCLCREAT_WORD1
,
91 NFSD_SUPPATTR_EXCLCREAT_WORD2
95 check_attr_support(struct svc_rqst
*rqstp
, struct nfsd4_compound_state
*cstate
,
96 u32
*bmval
, u32
*writable
)
98 struct dentry
*dentry
= cstate
->current_fh
.fh_dentry
;
99 struct svc_export
*exp
= cstate
->current_fh
.fh_export
;
101 if (!nfsd_attrs_supported(cstate
->minorversion
, bmval
))
102 return nfserr_attrnotsupp
;
103 if ((bmval
[0] & FATTR4_WORD0_ACL
) && !IS_POSIXACL(d_inode(dentry
)))
104 return nfserr_attrnotsupp
;
105 if ((bmval
[2] & FATTR4_WORD2_SECURITY_LABEL
) &&
106 !(exp
->ex_flags
& NFSEXP_SECURITY_LABEL
))
107 return nfserr_attrnotsupp
;
108 if (writable
&& !bmval_is_subset(bmval
, writable
))
110 if (writable
&& (bmval
[2] & FATTR4_WORD2_MODE_UMASK
) &&
111 (bmval
[1] & FATTR4_WORD1_MODE
))
117 nfsd4_check_open_attributes(struct svc_rqst
*rqstp
,
118 struct nfsd4_compound_state
*cstate
, struct nfsd4_open
*open
)
120 __be32 status
= nfs_ok
;
122 if (open
->op_create
== NFS4_OPEN_CREATE
) {
123 if (open
->op_createmode
== NFS4_CREATE_UNCHECKED
124 || open
->op_createmode
== NFS4_CREATE_GUARDED
)
125 status
= check_attr_support(rqstp
, cstate
,
126 open
->op_bmval
, nfsd_attrmask
);
127 else if (open
->op_createmode
== NFS4_CREATE_EXCLUSIVE4_1
)
128 status
= check_attr_support(rqstp
, cstate
,
129 open
->op_bmval
, nfsd41_ex_attrmask
);
136 is_create_with_attrs(struct nfsd4_open
*open
)
138 return open
->op_create
== NFS4_OPEN_CREATE
139 && (open
->op_createmode
== NFS4_CREATE_UNCHECKED
140 || open
->op_createmode
== NFS4_CREATE_GUARDED
141 || open
->op_createmode
== NFS4_CREATE_EXCLUSIVE4_1
);
145 * if error occurs when setting the acl, just clear the acl bit
146 * in the returned attr bitmap.
149 do_set_nfs4_acl(struct svc_rqst
*rqstp
, struct svc_fh
*fhp
,
150 struct nfs4_acl
*acl
, u32
*bmval
)
154 status
= nfsd4_set_nfs4_acl(rqstp
, fhp
, acl
);
157 * We should probably fail the whole open at this point,
158 * but we've already created the file, so it's too late;
159 * So this seems the least of evils:
161 bmval
[0] &= ~FATTR4_WORD0_ACL
;
165 fh_dup2(struct svc_fh
*dst
, struct svc_fh
*src
)
168 dget(src
->fh_dentry
);
170 exp_get(src
->fh_export
);
175 do_open_permission(struct svc_rqst
*rqstp
, struct svc_fh
*current_fh
, struct nfsd4_open
*open
, int accmode
)
179 if (open
->op_truncate
&&
180 !(open
->op_share_access
& NFS4_SHARE_ACCESS_WRITE
))
183 accmode
|= NFSD_MAY_READ_IF_EXEC
;
185 if (open
->op_share_access
& NFS4_SHARE_ACCESS_READ
)
186 accmode
|= NFSD_MAY_READ
;
187 if (open
->op_share_access
& NFS4_SHARE_ACCESS_WRITE
)
188 accmode
|= (NFSD_MAY_WRITE
| NFSD_MAY_TRUNC
);
189 if (open
->op_share_deny
& NFS4_SHARE_DENY_READ
)
190 accmode
|= NFSD_MAY_WRITE
;
192 status
= fh_verify(rqstp
, current_fh
, S_IFREG
, accmode
);
197 static __be32
nfsd_check_obj_isreg(struct svc_fh
*fh
)
199 umode_t mode
= d_inode(fh
->fh_dentry
)->i_mode
;
206 * Using err_symlink as our catch-all case may look odd; but
207 * there's no other obvious error for this case in 4.0, and we
208 * happen to know that it will cause the linux v4 client to do
209 * the right thing on attempts to open something other than a
212 return nfserr_symlink
;
215 static void nfsd4_set_open_owner_reply_cache(struct nfsd4_compound_state
*cstate
, struct nfsd4_open
*open
, struct svc_fh
*resfh
)
217 if (nfsd4_has_session(cstate
))
219 fh_copy_shallow(&open
->op_openowner
->oo_owner
.so_replay
.rp_openfh
,
224 do_open_lookup(struct svc_rqst
*rqstp
, struct nfsd4_compound_state
*cstate
, struct nfsd4_open
*open
, struct svc_fh
**resfh
)
226 struct svc_fh
*current_fh
= &cstate
->current_fh
;
230 *resfh
= kmalloc(sizeof(struct svc_fh
), GFP_KERNEL
);
232 return nfserr_jukebox
;
233 fh_init(*resfh
, NFS4_FHSIZE
);
234 open
->op_truncate
= 0;
236 if (open
->op_create
) {
237 /* FIXME: check session persistence and pnfs flags.
238 * The nfsv4.1 spec requires the following semantics:
240 * Persistent | pNFS | Server REQUIRED | Client Allowed
241 * Reply Cache | server | |
242 * -------------+--------+-----------------+--------------------
243 * no | no | EXCLUSIVE4_1 | EXCLUSIVE4_1
245 * | | and EXCLUSIVE4 | or EXCLUSIVE4
247 * no | yes | EXCLUSIVE4_1 | EXCLUSIVE4_1
248 * yes | no | GUARDED4 | GUARDED4
249 * yes | yes | GUARDED4 | GUARDED4
253 * Note: create modes (UNCHECKED,GUARDED...) are the same
254 * in NFSv4 as in v3 except EXCLUSIVE4_1.
256 current
->fs
->umask
= open
->op_umask
;
257 status
= do_nfsd_create(rqstp
, current_fh
, open
->op_fname
.data
,
258 open
->op_fname
.len
, &open
->op_iattr
,
259 *resfh
, open
->op_createmode
,
260 (u32
*)open
->op_verf
.data
,
261 &open
->op_truncate
, &open
->op_created
);
262 current
->fs
->umask
= 0;
264 if (!status
&& open
->op_label
.len
)
265 nfsd4_security_inode_setsecctx(*resfh
, &open
->op_label
, open
->op_bmval
);
268 * Following rfc 3530 14.2.16, and rfc 5661 18.16.4
269 * use the returned bitmask to indicate which attributes
270 * we used to store the verifier:
272 if (nfsd_create_is_exclusive(open
->op_createmode
) && status
== 0)
273 open
->op_bmval
[1] |= (FATTR4_WORD1_TIME_ACCESS
|
274 FATTR4_WORD1_TIME_MODIFY
);
277 * Note this may exit with the parent still locked.
278 * We will hold the lock until nfsd4_open's final
279 * lookup, to prevent renames or unlinks until we've had
280 * a chance to an acquire a delegation if appropriate.
282 status
= nfsd_lookup(rqstp
, current_fh
,
283 open
->op_fname
.data
, open
->op_fname
.len
, *resfh
);
286 status
= nfsd_check_obj_isreg(*resfh
);
290 if (is_create_with_attrs(open
) && open
->op_acl
!= NULL
)
291 do_set_nfs4_acl(rqstp
, *resfh
, open
->op_acl
, open
->op_bmval
);
293 nfsd4_set_open_owner_reply_cache(cstate
, open
, *resfh
);
294 accmode
= NFSD_MAY_NOP
;
295 if (open
->op_created
||
296 open
->op_claim_type
== NFS4_OPEN_CLAIM_DELEGATE_CUR
)
297 accmode
|= NFSD_MAY_OWNER_OVERRIDE
;
298 status
= do_open_permission(rqstp
, *resfh
, open
, accmode
);
299 set_change_info(&open
->op_cinfo
, current_fh
);
305 do_open_fhandle(struct svc_rqst
*rqstp
, struct nfsd4_compound_state
*cstate
, struct nfsd4_open
*open
)
307 struct svc_fh
*current_fh
= &cstate
->current_fh
;
311 /* We don't know the target directory, and therefore can not
312 * set the change info
315 memset(&open
->op_cinfo
, 0, sizeof(struct nfsd4_change_info
));
317 nfsd4_set_open_owner_reply_cache(cstate
, open
, current_fh
);
319 open
->op_truncate
= (open
->op_iattr
.ia_valid
& ATTR_SIZE
) &&
320 (open
->op_iattr
.ia_size
== 0);
322 * In the delegation case, the client is telling us about an
323 * open that it *already* performed locally, some time ago. We
324 * should let it succeed now if possible.
326 * In the case of a CLAIM_FH open, on the other hand, the client
327 * may be counting on us to enforce permissions (the Linux 4.1
328 * client uses this for normal opens, for example).
330 if (open
->op_claim_type
== NFS4_OPEN_CLAIM_DELEG_CUR_FH
)
331 accmode
= NFSD_MAY_OWNER_OVERRIDE
;
333 status
= do_open_permission(rqstp
, current_fh
, open
, accmode
);
339 copy_clientid(clientid_t
*clid
, struct nfsd4_session
*session
)
341 struct nfsd4_sessionid
*sid
=
342 (struct nfsd4_sessionid
*)session
->se_sessionid
.data
;
344 clid
->cl_boot
= sid
->clientid
.cl_boot
;
345 clid
->cl_id
= sid
->clientid
.cl_id
;
349 nfsd4_open(struct svc_rqst
*rqstp
, struct nfsd4_compound_state
*cstate
,
352 struct nfsd4_open
*open
= &u
->open
;
354 struct svc_fh
*resfh
= NULL
;
355 struct net
*net
= SVC_NET(rqstp
);
356 struct nfsd_net
*nn
= net_generic(net
, nfsd_net_id
);
358 dprintk("NFSD: nfsd4_open filename %.*s op_openowner %p\n",
359 (int)open
->op_fname
.len
, open
->op_fname
.data
,
362 /* This check required by spec. */
363 if (open
->op_create
&& open
->op_claim_type
!= NFS4_OPEN_CLAIM_NULL
)
366 open
->op_created
= 0;
369 * Before RECLAIM_COMPLETE done, server should deny new lock
371 if (nfsd4_has_session(cstate
) &&
372 !test_bit(NFSD4_CLIENT_RECLAIM_COMPLETE
,
373 &cstate
->session
->se_client
->cl_flags
) &&
374 open
->op_claim_type
!= NFS4_OPEN_CLAIM_PREVIOUS
)
377 if (nfsd4_has_session(cstate
))
378 copy_clientid(&open
->op_clientid
, cstate
->session
);
380 /* check seqid for replay. set nfs4_owner */
381 status
= nfsd4_process_open1(cstate
, open
, nn
);
382 if (status
== nfserr_replay_me
) {
383 struct nfs4_replay
*rp
= &open
->op_openowner
->oo_owner
.so_replay
;
384 fh_put(&cstate
->current_fh
);
385 fh_copy_shallow(&cstate
->current_fh
.fh_handle
,
387 status
= fh_verify(rqstp
, &cstate
->current_fh
, 0, NFSD_MAY_NOP
);
389 dprintk("nfsd4_open: replay failed"
390 " restoring previous filehandle\n");
392 status
= nfserr_replay_me
;
396 if (open
->op_xdr_error
) {
397 status
= open
->op_xdr_error
;
401 status
= nfsd4_check_open_attributes(rqstp
, cstate
, open
);
405 /* Openowner is now set, so sequence id will get bumped. Now we need
406 * these checks before we do any creates: */
407 status
= nfserr_grace
;
408 if (opens_in_grace(net
) && open
->op_claim_type
!= NFS4_OPEN_CLAIM_PREVIOUS
)
410 status
= nfserr_no_grace
;
411 if (!opens_in_grace(net
) && open
->op_claim_type
== NFS4_OPEN_CLAIM_PREVIOUS
)
414 switch (open
->op_claim_type
) {
415 case NFS4_OPEN_CLAIM_DELEGATE_CUR
:
416 case NFS4_OPEN_CLAIM_NULL
:
417 status
= do_open_lookup(rqstp
, cstate
, open
, &resfh
);
421 case NFS4_OPEN_CLAIM_PREVIOUS
:
422 status
= nfs4_check_open_reclaim(&open
->op_clientid
,
426 open
->op_openowner
->oo_flags
|= NFS4_OO_CONFIRMED
;
427 case NFS4_OPEN_CLAIM_FH
:
428 case NFS4_OPEN_CLAIM_DELEG_CUR_FH
:
429 status
= do_open_fhandle(rqstp
, cstate
, open
);
432 resfh
= &cstate
->current_fh
;
434 case NFS4_OPEN_CLAIM_DELEG_PREV_FH
:
435 case NFS4_OPEN_CLAIM_DELEGATE_PREV
:
436 dprintk("NFSD: unsupported OPEN claim type %d\n",
437 open
->op_claim_type
);
438 status
= nfserr_notsupp
;
441 dprintk("NFSD: Invalid OPEN claim type %d\n",
442 open
->op_claim_type
);
443 status
= nfserr_inval
;
447 * nfsd4_process_open2() does the actual opening of the file. If
448 * successful, it (1) truncates the file if open->op_truncate was
449 * set, (2) sets open->op_stateid, (3) sets open->op_delegation.
451 status
= nfsd4_process_open2(rqstp
, resfh
, open
);
452 WARN(status
&& open
->op_created
,
453 "nfsd4_process_open2 failed to open newly-created file! status=%u\n",
454 be32_to_cpu(status
));
456 if (resfh
&& resfh
!= &cstate
->current_fh
) {
457 fh_dup2(&cstate
->current_fh
, resfh
);
461 nfsd4_cleanup_open_state(cstate
, open
);
462 nfsd4_bump_seqid(cstate
, status
);
467 * OPEN is the only seqid-mutating operation whose decoding can fail
468 * with a seqid-mutating error (specifically, decoding of user names in
469 * the attributes). Therefore we have to do some processing to look up
470 * the stateowner so that we can bump the seqid.
472 static __be32
nfsd4_open_omfg(struct svc_rqst
*rqstp
, struct nfsd4_compound_state
*cstate
, struct nfsd4_op
*op
)
474 struct nfsd4_open
*open
= &op
->u
.open
;
476 if (!seqid_mutating_err(ntohl(op
->status
)))
478 if (nfsd4_has_session(cstate
))
480 open
->op_xdr_error
= op
->status
;
481 return nfsd4_open(rqstp
, cstate
, &op
->u
);
485 * filehandle-manipulating ops.
488 nfsd4_getfh(struct svc_rqst
*rqstp
, struct nfsd4_compound_state
*cstate
,
491 if (!cstate
->current_fh
.fh_dentry
)
492 return nfserr_nofilehandle
;
494 u
->getfh
= &cstate
->current_fh
;
499 nfsd4_putfh(struct svc_rqst
*rqstp
, struct nfsd4_compound_state
*cstate
,
502 struct nfsd4_putfh
*putfh
= &u
->putfh
;
504 fh_put(&cstate
->current_fh
);
505 cstate
->current_fh
.fh_handle
.fh_size
= putfh
->pf_fhlen
;
506 memcpy(&cstate
->current_fh
.fh_handle
.fh_base
, putfh
->pf_fhval
,
508 return fh_verify(rqstp
, &cstate
->current_fh
, 0, NFSD_MAY_BYPASS_GSS
);
512 nfsd4_putrootfh(struct svc_rqst
*rqstp
, struct nfsd4_compound_state
*cstate
,
517 fh_put(&cstate
->current_fh
);
518 status
= exp_pseudoroot(rqstp
, &cstate
->current_fh
);
523 nfsd4_restorefh(struct svc_rqst
*rqstp
, struct nfsd4_compound_state
*cstate
,
526 if (!cstate
->save_fh
.fh_dentry
)
527 return nfserr_restorefh
;
529 fh_dup2(&cstate
->current_fh
, &cstate
->save_fh
);
530 if (HAS_STATE_ID(cstate
, SAVED_STATE_ID_FLAG
)) {
531 memcpy(&cstate
->current_stateid
, &cstate
->save_stateid
, sizeof(stateid_t
));
532 SET_STATE_ID(cstate
, CURRENT_STATE_ID_FLAG
);
538 nfsd4_savefh(struct svc_rqst
*rqstp
, struct nfsd4_compound_state
*cstate
,
541 if (!cstate
->current_fh
.fh_dentry
)
542 return nfserr_nofilehandle
;
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
);
556 nfsd4_access(struct svc_rqst
*rqstp
, struct nfsd4_compound_state
*cstate
,
559 struct nfsd4_access
*access
= &u
->access
;
561 if (access
->ac_req_access
& ~NFS3_ACCESS_FULL
)
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
);
569 static void gen_boot_verifier(nfs4_verifier
*verifier
, struct net
*net
)
572 struct nfsd_net
*nn
= net_generic(net
, nfsd_net_id
);
575 * This is opaque to client, so no need to byte-swap. Use
576 * __force to keep sparse happy
578 verf
[0] = (__force __be32
)nn
->nfssvc_boot
.tv_sec
;
579 verf
[1] = (__force __be32
)nn
->nfssvc_boot
.tv_usec
;
580 memcpy(verifier
->data
, verf
, sizeof(verifier
->data
));
584 nfsd4_commit(struct svc_rqst
*rqstp
, struct nfsd4_compound_state
*cstate
,
587 struct nfsd4_commit
*commit
= &u
->commit
;
589 gen_boot_verifier(&commit
->co_verf
, SVC_NET(rqstp
));
590 return nfsd_commit(rqstp
, &cstate
->current_fh
, commit
->co_offset
,
595 nfsd4_create(struct svc_rqst
*rqstp
, struct nfsd4_compound_state
*cstate
,
598 struct nfsd4_create
*create
= &u
->create
;
603 fh_init(&resfh
, NFS4_FHSIZE
);
605 status
= fh_verify(rqstp
, &cstate
->current_fh
, S_IFDIR
, NFSD_MAY_NOP
);
609 status
= check_attr_support(rqstp
, cstate
, create
->cr_bmval
,
614 current
->fs
->umask
= create
->cr_umask
;
615 switch (create
->cr_type
) {
617 status
= nfsd_symlink(rqstp
, &cstate
->current_fh
,
618 create
->cr_name
, create
->cr_namelen
,
619 create
->cr_data
, &resfh
);
623 status
= nfserr_inval
;
624 rdev
= MKDEV(create
->cr_specdata1
, create
->cr_specdata2
);
625 if (MAJOR(rdev
) != create
->cr_specdata1
||
626 MINOR(rdev
) != create
->cr_specdata2
)
628 status
= nfsd_create(rqstp
, &cstate
->current_fh
,
629 create
->cr_name
, create
->cr_namelen
,
630 &create
->cr_iattr
, S_IFBLK
, rdev
, &resfh
);
634 status
= nfserr_inval
;
635 rdev
= MKDEV(create
->cr_specdata1
, create
->cr_specdata2
);
636 if (MAJOR(rdev
) != create
->cr_specdata1
||
637 MINOR(rdev
) != create
->cr_specdata2
)
639 status
= nfsd_create(rqstp
, &cstate
->current_fh
,
640 create
->cr_name
, create
->cr_namelen
,
641 &create
->cr_iattr
,S_IFCHR
, rdev
, &resfh
);
645 status
= nfsd_create(rqstp
, &cstate
->current_fh
,
646 create
->cr_name
, create
->cr_namelen
,
647 &create
->cr_iattr
, S_IFSOCK
, 0, &resfh
);
651 status
= nfsd_create(rqstp
, &cstate
->current_fh
,
652 create
->cr_name
, create
->cr_namelen
,
653 &create
->cr_iattr
, S_IFIFO
, 0, &resfh
);
657 create
->cr_iattr
.ia_valid
&= ~ATTR_SIZE
;
658 status
= nfsd_create(rqstp
, &cstate
->current_fh
,
659 create
->cr_name
, create
->cr_namelen
,
660 &create
->cr_iattr
, S_IFDIR
, 0, &resfh
);
664 status
= nfserr_badtype
;
670 if (create
->cr_label
.len
)
671 nfsd4_security_inode_setsecctx(&resfh
, &create
->cr_label
, create
->cr_bmval
);
673 if (create
->cr_acl
!= NULL
)
674 do_set_nfs4_acl(rqstp
, &resfh
, create
->cr_acl
,
677 fh_unlock(&cstate
->current_fh
);
678 set_change_info(&create
->cr_cinfo
, &cstate
->current_fh
);
679 fh_dup2(&cstate
->current_fh
, &resfh
);
683 current
->fs
->umask
= 0;
688 nfsd4_getattr(struct svc_rqst
*rqstp
, struct nfsd4_compound_state
*cstate
,
691 struct nfsd4_getattr
*getattr
= &u
->getattr
;
694 status
= fh_verify(rqstp
, &cstate
->current_fh
, 0, NFSD_MAY_NOP
);
698 if (getattr
->ga_bmval
[1] & NFSD_WRITEONLY_ATTRS_WORD1
)
701 getattr
->ga_bmval
[0] &= nfsd_suppattrs
[cstate
->minorversion
][0];
702 getattr
->ga_bmval
[1] &= nfsd_suppattrs
[cstate
->minorversion
][1];
703 getattr
->ga_bmval
[2] &= nfsd_suppattrs
[cstate
->minorversion
][2];
705 getattr
->ga_fhp
= &cstate
->current_fh
;
710 nfsd4_link(struct svc_rqst
*rqstp
, struct nfsd4_compound_state
*cstate
,
713 struct nfsd4_link
*link
= &u
->link
;
714 __be32 status
= nfserr_nofilehandle
;
716 if (!cstate
->save_fh
.fh_dentry
)
718 status
= nfsd_link(rqstp
, &cstate
->current_fh
,
719 link
->li_name
, link
->li_namelen
, &cstate
->save_fh
);
721 set_change_info(&link
->li_cinfo
, &cstate
->current_fh
);
725 static __be32
nfsd4_do_lookupp(struct svc_rqst
*rqstp
, struct svc_fh
*fh
)
727 struct svc_fh tmp_fh
;
730 fh_init(&tmp_fh
, NFS4_FHSIZE
);
731 ret
= exp_pseudoroot(rqstp
, &tmp_fh
);
734 if (tmp_fh
.fh_dentry
== fh
->fh_dentry
) {
739 return nfsd_lookup(rqstp
, fh
, "..", 2, fh
);
743 nfsd4_lookupp(struct svc_rqst
*rqstp
, struct nfsd4_compound_state
*cstate
,
746 return nfsd4_do_lookupp(rqstp
, &cstate
->current_fh
);
750 nfsd4_lookup(struct svc_rqst
*rqstp
, struct nfsd4_compound_state
*cstate
,
753 return nfsd_lookup(rqstp
, &cstate
->current_fh
,
754 u
->lookup
.lo_name
, u
->lookup
.lo_len
,
755 &cstate
->current_fh
);
759 nfsd4_read(struct svc_rqst
*rqstp
, struct nfsd4_compound_state
*cstate
,
762 struct nfsd4_read
*read
= &u
->read
;
765 read
->rd_filp
= NULL
;
766 if (read
->rd_offset
>= OFFSET_MAX
)
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.
774 * To ensure proper ordering, we therefore turn off zero copy if
775 * the client wants us to do more in this compound:
777 if (!nfsd4_last_compound_op(rqstp
))
778 clear_bit(RQ_SPLICE_OK
, &rqstp
->rq_flags
);
781 status
= nfs4_preprocess_stateid_op(rqstp
, cstate
, &cstate
->current_fh
,
782 &read
->rd_stateid
, RD_STATE
,
783 &read
->rd_filp
, &read
->rd_tmp_file
);
785 dprintk("NFSD: nfsd4_read: couldn't process stateid!\n");
790 read
->rd_rqstp
= rqstp
;
791 read
->rd_fhp
= &cstate
->current_fh
;
797 nfsd4_read_release(union nfsd4_op_u
*u
)
800 fput(u
->read
.rd_filp
);
804 nfsd4_readdir(struct svc_rqst
*rqstp
, struct nfsd4_compound_state
*cstate
,
807 struct nfsd4_readdir
*readdir
= &u
->readdir
;
808 u64 cookie
= readdir
->rd_cookie
;
809 static const nfs4_verifier zeroverf
;
811 /* no need to check permission - this will be done in nfsd_readdir() */
813 if (readdir
->rd_bmval
[1] & NFSD_WRITEONLY_ATTRS_WORD1
)
816 readdir
->rd_bmval
[0] &= nfsd_suppattrs
[cstate
->minorversion
][0];
817 readdir
->rd_bmval
[1] &= nfsd_suppattrs
[cstate
->minorversion
][1];
818 readdir
->rd_bmval
[2] &= nfsd_suppattrs
[cstate
->minorversion
][2];
820 if ((cookie
== 1) || (cookie
== 2) ||
821 (cookie
== 0 && memcmp(readdir
->rd_verf
.data
, zeroverf
.data
, NFS4_VERIFIER_SIZE
)))
822 return nfserr_bad_cookie
;
824 readdir
->rd_rqstp
= rqstp
;
825 readdir
->rd_fhp
= &cstate
->current_fh
;
830 nfsd4_readlink(struct svc_rqst
*rqstp
, struct nfsd4_compound_state
*cstate
,
833 u
->readlink
.rl_rqstp
= rqstp
;
834 u
->readlink
.rl_fhp
= &cstate
->current_fh
;
839 nfsd4_remove(struct svc_rqst
*rqstp
, struct nfsd4_compound_state
*cstate
,
842 struct nfsd4_remove
*remove
= &u
->remove
;
845 if (opens_in_grace(SVC_NET(rqstp
)))
847 status
= nfsd_unlink(rqstp
, &cstate
->current_fh
, 0,
848 remove
->rm_name
, remove
->rm_namelen
);
850 fh_unlock(&cstate
->current_fh
);
851 set_change_info(&remove
->rm_cinfo
, &cstate
->current_fh
);
857 nfsd4_rename(struct svc_rqst
*rqstp
, struct nfsd4_compound_state
*cstate
,
860 struct nfsd4_rename
*rename
= &u
->rename
;
861 __be32 status
= nfserr_nofilehandle
;
863 if (!cstate
->save_fh
.fh_dentry
)
865 if (opens_in_grace(SVC_NET(rqstp
)) &&
866 !(cstate
->save_fh
.fh_export
->ex_flags
& NFSEXP_NOSUBTREECHECK
))
868 status
= nfsd_rename(rqstp
, &cstate
->save_fh
, rename
->rn_sname
,
869 rename
->rn_snamelen
, &cstate
->current_fh
,
870 rename
->rn_tname
, rename
->rn_tnamelen
);
873 set_change_info(&rename
->rn_sinfo
, &cstate
->current_fh
);
874 set_change_info(&rename
->rn_tinfo
, &cstate
->save_fh
);
879 nfsd4_secinfo(struct svc_rqst
*rqstp
, struct nfsd4_compound_state
*cstate
,
882 struct nfsd4_secinfo
*secinfo
= &u
->secinfo
;
883 struct svc_export
*exp
;
884 struct dentry
*dentry
;
887 err
= fh_verify(rqstp
, &cstate
->current_fh
, S_IFDIR
, NFSD_MAY_EXEC
);
890 err
= nfsd_lookup_dentry(rqstp
, &cstate
->current_fh
,
891 secinfo
->si_name
, secinfo
->si_namelen
,
895 fh_unlock(&cstate
->current_fh
);
896 if (d_really_is_negative(dentry
)) {
900 secinfo
->si_exp
= exp
;
902 if (cstate
->minorversion
)
903 /* See rfc 5661 section 2.6.3.1.1.8 */
904 fh_put(&cstate
->current_fh
);
909 nfsd4_secinfo_no_name(struct svc_rqst
*rqstp
, struct nfsd4_compound_state
*cstate
,
914 switch (u
->secinfo_no_name
.sin_style
) {
915 case NFS4_SECINFO_STYLE4_CURRENT_FH
:
917 case NFS4_SECINFO_STYLE4_PARENT
:
918 err
= nfsd4_do_lookupp(rqstp
, &cstate
->current_fh
);
926 u
->secinfo_no_name
.sin_exp
= exp_get(cstate
->current_fh
.fh_export
);
927 fh_put(&cstate
->current_fh
);
932 nfsd4_secinfo_release(union nfsd4_op_u
*u
)
934 if (u
->secinfo
.si_exp
)
935 exp_put(u
->secinfo
.si_exp
);
939 nfsd4_secinfo_no_name_release(union nfsd4_op_u
*u
)
941 if (u
->secinfo_no_name
.sin_exp
)
942 exp_put(u
->secinfo_no_name
.sin_exp
);
946 nfsd4_setattr(struct svc_rqst
*rqstp
, struct nfsd4_compound_state
*cstate
,
949 struct nfsd4_setattr
*setattr
= &u
->setattr
;
950 __be32 status
= nfs_ok
;
953 if (setattr
->sa_iattr
.ia_valid
& ATTR_SIZE
) {
954 status
= nfs4_preprocess_stateid_op(rqstp
, cstate
,
955 &cstate
->current_fh
, &setattr
->sa_stateid
,
956 WR_STATE
, NULL
, NULL
);
958 dprintk("NFSD: nfsd4_setattr: couldn't process stateid!\n");
962 err
= fh_want_write(&cstate
->current_fh
);
964 return nfserrno(err
);
967 status
= check_attr_support(rqstp
, cstate
, setattr
->sa_bmval
,
972 if (setattr
->sa_acl
!= NULL
)
973 status
= nfsd4_set_nfs4_acl(rqstp
, &cstate
->current_fh
,
977 if (setattr
->sa_label
.len
)
978 status
= nfsd4_set_nfs4_label(rqstp
, &cstate
->current_fh
,
982 status
= nfsd_setattr(rqstp
, &cstate
->current_fh
, &setattr
->sa_iattr
,
985 fh_drop_write(&cstate
->current_fh
);
989 static int fill_in_write_vector(struct kvec
*vec
, struct nfsd4_write
*write
)
992 int buflen
= write
->wr_buflen
;
994 vec
[0].iov_base
= write
->wr_head
.iov_base
;
995 vec
[0].iov_len
= min_t(int, buflen
, write
->wr_head
.iov_len
);
996 buflen
-= vec
[0].iov_len
;
999 vec
[i
].iov_base
= page_address(write
->wr_pagelist
[i
- 1]);
1000 vec
[i
].iov_len
= min_t(int, PAGE_SIZE
, buflen
);
1001 buflen
-= vec
[i
].iov_len
;
1008 nfsd4_write(struct svc_rqst
*rqstp
, struct nfsd4_compound_state
*cstate
,
1009 union nfsd4_op_u
*u
)
1011 struct nfsd4_write
*write
= &u
->write
;
1012 stateid_t
*stateid
= &write
->wr_stateid
;
1013 struct file
*filp
= NULL
;
1014 __be32 status
= nfs_ok
;
1018 if (write
->wr_offset
>= OFFSET_MAX
)
1019 return nfserr_inval
;
1021 status
= nfs4_preprocess_stateid_op(rqstp
, cstate
, &cstate
->current_fh
,
1022 stateid
, WR_STATE
, &filp
, NULL
);
1024 dprintk("NFSD: nfsd4_write: couldn't process stateid!\n");
1028 cnt
= write
->wr_buflen
;
1029 write
->wr_how_written
= write
->wr_stable_how
;
1030 gen_boot_verifier(&write
->wr_verifier
, SVC_NET(rqstp
));
1032 nvecs
= fill_in_write_vector(rqstp
->rq_vec
, write
);
1033 WARN_ON_ONCE(nvecs
> ARRAY_SIZE(rqstp
->rq_vec
));
1035 status
= nfsd_vfs_write(rqstp
, &cstate
->current_fh
, filp
,
1036 write
->wr_offset
, rqstp
->rq_vec
, nvecs
, &cnt
,
1037 write
->wr_how_written
);
1040 write
->wr_bytes_written
= cnt
;
1046 nfsd4_verify_copy(struct svc_rqst
*rqstp
, struct nfsd4_compound_state
*cstate
,
1047 stateid_t
*src_stateid
, struct file
**src
,
1048 stateid_t
*dst_stateid
, struct file
**dst
)
1052 if (!cstate
->save_fh
.fh_dentry
)
1053 return nfserr_nofilehandle
;
1055 status
= nfs4_preprocess_stateid_op(rqstp
, cstate
, &cstate
->save_fh
,
1056 src_stateid
, RD_STATE
, src
, NULL
);
1058 dprintk("NFSD: %s: couldn't process src stateid!\n", __func__
);
1062 status
= nfs4_preprocess_stateid_op(rqstp
, cstate
, &cstate
->current_fh
,
1063 dst_stateid
, WR_STATE
, dst
, NULL
);
1065 dprintk("NFSD: %s: couldn't process dst stateid!\n", __func__
);
1069 /* fix up for NFS-specific error code */
1070 if (!S_ISREG(file_inode(*src
)->i_mode
) ||
1071 !S_ISREG(file_inode(*dst
)->i_mode
)) {
1072 status
= nfserr_wrong_type
;
1086 nfsd4_clone(struct svc_rqst
*rqstp
, struct nfsd4_compound_state
*cstate
,
1087 union nfsd4_op_u
*u
)
1089 struct nfsd4_clone
*clone
= &u
->clone
;
1090 struct file
*src
, *dst
;
1093 status
= nfsd4_verify_copy(rqstp
, cstate
, &clone
->cl_src_stateid
, &src
,
1094 &clone
->cl_dst_stateid
, &dst
);
1098 status
= nfsd4_clone_file_range(src
, clone
->cl_src_pos
,
1099 dst
, clone
->cl_dst_pos
, clone
->cl_count
);
1108 nfsd4_copy(struct svc_rqst
*rqstp
, struct nfsd4_compound_state
*cstate
,
1109 union nfsd4_op_u
*u
)
1111 struct nfsd4_copy
*copy
= &u
->copy
;
1112 struct file
*src
, *dst
;
1116 status
= nfsd4_verify_copy(rqstp
, cstate
, ©
->cp_src_stateid
, &src
,
1117 ©
->cp_dst_stateid
, &dst
);
1121 bytes
= nfsd_copy_file_range(src
, copy
->cp_src_pos
,
1122 dst
, copy
->cp_dst_pos
, copy
->cp_count
);
1125 status
= nfserrno(bytes
);
1127 copy
->cp_res
.wr_bytes_written
= bytes
;
1128 copy
->cp_res
.wr_stable_how
= NFS_UNSTABLE
;
1129 copy
->cp_consecutive
= 1;
1130 copy
->cp_synchronous
= 1;
1131 gen_boot_verifier(©
->cp_res
.wr_verifier
, SVC_NET(rqstp
));
1142 nfsd4_fallocate(struct svc_rqst
*rqstp
, struct nfsd4_compound_state
*cstate
,
1143 struct nfsd4_fallocate
*fallocate
, int flags
)
1145 __be32 status
= nfserr_notsupp
;
1148 status
= nfs4_preprocess_stateid_op(rqstp
, cstate
, &cstate
->current_fh
,
1149 &fallocate
->falloc_stateid
,
1150 WR_STATE
, &file
, NULL
);
1151 if (status
!= nfs_ok
) {
1152 dprintk("NFSD: nfsd4_fallocate: couldn't process stateid!\n");
1156 status
= nfsd4_vfs_fallocate(rqstp
, &cstate
->current_fh
, file
,
1157 fallocate
->falloc_offset
,
1158 fallocate
->falloc_length
,
1165 nfsd4_allocate(struct svc_rqst
*rqstp
, struct nfsd4_compound_state
*cstate
,
1166 union nfsd4_op_u
*u
)
1168 return nfsd4_fallocate(rqstp
, cstate
, &u
->allocate
, 0);
1172 nfsd4_deallocate(struct svc_rqst
*rqstp
, struct nfsd4_compound_state
*cstate
,
1173 union nfsd4_op_u
*u
)
1175 return nfsd4_fallocate(rqstp
, cstate
, &u
->deallocate
,
1176 FALLOC_FL_PUNCH_HOLE
| FALLOC_FL_KEEP_SIZE
);
1180 nfsd4_seek(struct svc_rqst
*rqstp
, struct nfsd4_compound_state
*cstate
,
1181 union nfsd4_op_u
*u
)
1183 struct nfsd4_seek
*seek
= &u
->seek
;
1188 status
= nfs4_preprocess_stateid_op(rqstp
, cstate
, &cstate
->current_fh
,
1189 &seek
->seek_stateid
,
1190 RD_STATE
, &file
, NULL
);
1192 dprintk("NFSD: nfsd4_seek: couldn't process stateid!\n");
1196 switch (seek
->seek_whence
) {
1197 case NFS4_CONTENT_DATA
:
1200 case NFS4_CONTENT_HOLE
:
1204 status
= nfserr_union_notsupp
;
1209 * Note: This call does change file->f_pos, but nothing in NFSD
1210 * should ever file->f_pos.
1212 seek
->seek_pos
= vfs_llseek(file
, seek
->seek_offset
, whence
);
1213 if (seek
->seek_pos
< 0)
1214 status
= nfserrno(seek
->seek_pos
);
1215 else if (seek
->seek_pos
>= i_size_read(file_inode(file
)))
1216 seek
->seek_eof
= true;
1223 /* This routine never returns NFS_OK! If there are no other errors, it
1224 * will return NFSERR_SAME or NFSERR_NOT_SAME depending on whether the
1225 * attributes matched. VERIFY is implemented by mapping NFSERR_SAME
1226 * to NFS_OK after the call; NVERIFY by mapping NFSERR_NOT_SAME to NFS_OK.
1229 _nfsd4_verify(struct svc_rqst
*rqstp
, struct nfsd4_compound_state
*cstate
,
1230 struct nfsd4_verify
*verify
)
1236 status
= fh_verify(rqstp
, &cstate
->current_fh
, 0, NFSD_MAY_NOP
);
1240 status
= check_attr_support(rqstp
, cstate
, verify
->ve_bmval
, NULL
);
1244 if ((verify
->ve_bmval
[0] & FATTR4_WORD0_RDATTR_ERROR
)
1245 || (verify
->ve_bmval
[1] & NFSD_WRITEONLY_ATTRS_WORD1
))
1246 return nfserr_inval
;
1247 if (verify
->ve_attrlen
& 3)
1248 return nfserr_inval
;
1251 * bitmap_len(1) + bitmap(2) + attr_len(1) = 4
1253 count
= 4 + (verify
->ve_attrlen
>> 2);
1254 buf
= kmalloc(count
<< 2, GFP_KERNEL
);
1256 return nfserr_jukebox
;
1259 status
= nfsd4_encode_fattr_to_buf(&p
, count
, &cstate
->current_fh
,
1260 cstate
->current_fh
.fh_export
,
1261 cstate
->current_fh
.fh_dentry
,
1265 * If nfsd4_encode_fattr() ran out of space, assume that's because
1266 * the attributes are longer (hence different) than those given:
1268 if (status
== nfserr_resource
)
1269 status
= nfserr_not_same
;
1274 p
= buf
+ 1 + ntohl(buf
[0]);
1275 status
= nfserr_not_same
;
1276 if (ntohl(*p
++) != verify
->ve_attrlen
)
1278 if (!memcmp(p
, verify
->ve_attrval
, verify
->ve_attrlen
))
1279 status
= nfserr_same
;
1287 nfsd4_nverify(struct svc_rqst
*rqstp
, struct nfsd4_compound_state
*cstate
,
1288 union nfsd4_op_u
*u
)
1292 status
= _nfsd4_verify(rqstp
, cstate
, &u
->verify
);
1293 return status
== nfserr_not_same
? nfs_ok
: status
;
1297 nfsd4_verify(struct svc_rqst
*rqstp
, struct nfsd4_compound_state
*cstate
,
1298 union nfsd4_op_u
*u
)
1302 status
= _nfsd4_verify(rqstp
, cstate
, &u
->nverify
);
1303 return status
== nfserr_same
? nfs_ok
: status
;
1306 #ifdef CONFIG_NFSD_PNFS
1307 static const struct nfsd4_layout_ops
*
1308 nfsd4_layout_verify(struct svc_export
*exp
, unsigned int layout_type
)
1310 if (!exp
->ex_layout_types
) {
1311 dprintk("%s: export does not support pNFS\n", __func__
);
1315 if (layout_type
>= LAYOUT_TYPE_MAX
||
1316 !(exp
->ex_layout_types
& (1 << layout_type
))) {
1317 dprintk("%s: layout type %d not supported\n",
1318 __func__
, layout_type
);
1322 return nfsd4_layout_ops
[layout_type
];
1326 nfsd4_getdeviceinfo(struct svc_rqst
*rqstp
,
1327 struct nfsd4_compound_state
*cstate
, union nfsd4_op_u
*u
)
1329 struct nfsd4_getdeviceinfo
*gdp
= &u
->getdeviceinfo
;
1330 const struct nfsd4_layout_ops
*ops
;
1331 struct nfsd4_deviceid_map
*map
;
1332 struct svc_export
*exp
;
1335 dprintk("%s: layout_type %u dev_id [0x%llx:0x%x] maxcnt %u\n",
1337 gdp
->gd_layout_type
,
1338 gdp
->gd_devid
.fsid_idx
, gdp
->gd_devid
.generation
,
1341 map
= nfsd4_find_devid_map(gdp
->gd_devid
.fsid_idx
);
1343 dprintk("%s: couldn't find device ID to export mapping!\n",
1345 return nfserr_noent
;
1348 exp
= rqst_exp_find(rqstp
, map
->fsid_type
, map
->fsid
);
1350 dprintk("%s: could not find device id\n", __func__
);
1351 return nfserr_noent
;
1354 nfserr
= nfserr_layoutunavailable
;
1355 ops
= nfsd4_layout_verify(exp
, gdp
->gd_layout_type
);
1360 if (gdp
->gd_maxcount
!= 0) {
1361 nfserr
= ops
->proc_getdeviceinfo(exp
->ex_path
.mnt
->mnt_sb
,
1362 rqstp
, cstate
->session
->se_client
, gdp
);
1365 gdp
->gd_notify_types
&= ops
->notify_types
;
1372 nfsd4_getdeviceinfo_release(union nfsd4_op_u
*u
)
1374 kfree(u
->getdeviceinfo
.gd_device
);
1378 nfsd4_layoutget(struct svc_rqst
*rqstp
,
1379 struct nfsd4_compound_state
*cstate
, union nfsd4_op_u
*u
)
1381 struct nfsd4_layoutget
*lgp
= &u
->layoutget
;
1382 struct svc_fh
*current_fh
= &cstate
->current_fh
;
1383 const struct nfsd4_layout_ops
*ops
;
1384 struct nfs4_layout_stateid
*ls
;
1386 int accmode
= NFSD_MAY_READ_IF_EXEC
;
1388 switch (lgp
->lg_seg
.iomode
) {
1390 accmode
|= NFSD_MAY_READ
;
1393 accmode
|= NFSD_MAY_READ
| NFSD_MAY_WRITE
;
1396 dprintk("%s: invalid iomode %d\n",
1397 __func__
, lgp
->lg_seg
.iomode
);
1398 nfserr
= nfserr_badiomode
;
1402 nfserr
= fh_verify(rqstp
, current_fh
, 0, accmode
);
1406 nfserr
= nfserr_layoutunavailable
;
1407 ops
= nfsd4_layout_verify(current_fh
->fh_export
, lgp
->lg_layout_type
);
1412 * Verify minlength and range as per RFC5661:
1413 * o If loga_length is less than loga_minlength,
1414 * the metadata server MUST return NFS4ERR_INVAL.
1415 * o If the sum of loga_offset and loga_minlength exceeds
1416 * NFS4_UINT64_MAX, and loga_minlength is not
1417 * NFS4_UINT64_MAX, the error NFS4ERR_INVAL MUST result.
1418 * o If the sum of loga_offset and loga_length exceeds
1419 * NFS4_UINT64_MAX, and loga_length is not NFS4_UINT64_MAX,
1420 * the error NFS4ERR_INVAL MUST result.
1422 nfserr
= nfserr_inval
;
1423 if (lgp
->lg_seg
.length
< lgp
->lg_minlength
||
1424 (lgp
->lg_minlength
!= NFS4_MAX_UINT64
&&
1425 lgp
->lg_minlength
> NFS4_MAX_UINT64
- lgp
->lg_seg
.offset
) ||
1426 (lgp
->lg_seg
.length
!= NFS4_MAX_UINT64
&&
1427 lgp
->lg_seg
.length
> NFS4_MAX_UINT64
- lgp
->lg_seg
.offset
))
1429 if (lgp
->lg_seg
.length
== 0)
1432 nfserr
= nfsd4_preprocess_layout_stateid(rqstp
, cstate
, &lgp
->lg_sid
,
1433 true, lgp
->lg_layout_type
, &ls
);
1435 trace_layout_get_lookup_fail(&lgp
->lg_sid
);
1439 nfserr
= nfserr_recallconflict
;
1440 if (atomic_read(&ls
->ls_stid
.sc_file
->fi_lo_recalls
))
1443 nfserr
= ops
->proc_layoutget(d_inode(current_fh
->fh_dentry
),
1448 nfserr
= nfsd4_insert_layout(lgp
, ls
);
1451 mutex_unlock(&ls
->ls_mutex
);
1452 nfs4_put_stid(&ls
->ls_stid
);
1458 nfsd4_layoutget_release(union nfsd4_op_u
*u
)
1460 kfree(u
->layoutget
.lg_content
);
1464 nfsd4_layoutcommit(struct svc_rqst
*rqstp
,
1465 struct nfsd4_compound_state
*cstate
, union nfsd4_op_u
*u
)
1467 struct nfsd4_layoutcommit
*lcp
= &u
->layoutcommit
;
1468 const struct nfsd4_layout_seg
*seg
= &lcp
->lc_seg
;
1469 struct svc_fh
*current_fh
= &cstate
->current_fh
;
1470 const struct nfsd4_layout_ops
*ops
;
1471 loff_t new_size
= lcp
->lc_last_wr
+ 1;
1472 struct inode
*inode
;
1473 struct nfs4_layout_stateid
*ls
;
1476 nfserr
= fh_verify(rqstp
, current_fh
, 0, NFSD_MAY_WRITE
);
1480 nfserr
= nfserr_layoutunavailable
;
1481 ops
= nfsd4_layout_verify(current_fh
->fh_export
, lcp
->lc_layout_type
);
1484 inode
= d_inode(current_fh
->fh_dentry
);
1486 nfserr
= nfserr_inval
;
1487 if (new_size
<= seg
->offset
) {
1488 dprintk("pnfsd: last write before layout segment\n");
1491 if (new_size
> seg
->offset
+ seg
->length
) {
1492 dprintk("pnfsd: last write beyond layout segment\n");
1495 if (!lcp
->lc_newoffset
&& new_size
> i_size_read(inode
)) {
1496 dprintk("pnfsd: layoutcommit beyond EOF\n");
1500 nfserr
= nfsd4_preprocess_layout_stateid(rqstp
, cstate
, &lcp
->lc_sid
,
1501 false, lcp
->lc_layout_type
,
1504 trace_layout_commit_lookup_fail(&lcp
->lc_sid
);
1505 /* fixup error code as per RFC5661 */
1506 if (nfserr
== nfserr_bad_stateid
)
1507 nfserr
= nfserr_badlayout
;
1511 /* LAYOUTCOMMIT does not require any serialization */
1512 mutex_unlock(&ls
->ls_mutex
);
1514 if (new_size
> i_size_read(inode
)) {
1515 lcp
->lc_size_chg
= 1;
1516 lcp
->lc_newsize
= new_size
;
1518 lcp
->lc_size_chg
= 0;
1521 nfserr
= ops
->proc_layoutcommit(inode
, lcp
);
1522 nfs4_put_stid(&ls
->ls_stid
);
1528 nfsd4_layoutreturn(struct svc_rqst
*rqstp
,
1529 struct nfsd4_compound_state
*cstate
, union nfsd4_op_u
*u
)
1531 struct nfsd4_layoutreturn
*lrp
= &u
->layoutreturn
;
1532 struct svc_fh
*current_fh
= &cstate
->current_fh
;
1535 nfserr
= fh_verify(rqstp
, current_fh
, 0, NFSD_MAY_NOP
);
1539 nfserr
= nfserr_layoutunavailable
;
1540 if (!nfsd4_layout_verify(current_fh
->fh_export
, lrp
->lr_layout_type
))
1543 switch (lrp
->lr_seg
.iomode
) {
1549 dprintk("%s: invalid iomode %d\n", __func__
,
1550 lrp
->lr_seg
.iomode
);
1551 nfserr
= nfserr_inval
;
1555 switch (lrp
->lr_return_type
) {
1557 nfserr
= nfsd4_return_file_layouts(rqstp
, cstate
, lrp
);
1561 nfserr
= nfsd4_return_client_layouts(rqstp
, cstate
, lrp
);
1564 dprintk("%s: invalid return_type %d\n", __func__
,
1565 lrp
->lr_return_type
);
1566 nfserr
= nfserr_inval
;
1572 #endif /* CONFIG_NFSD_PNFS */
1578 nfsd4_proc_null(struct svc_rqst
*rqstp
)
1583 static inline void nfsd4_increment_op_stats(u32 opnum
)
1585 if (opnum
>= FIRST_NFS4_OP
&& opnum
<= LAST_NFS4_OP
)
1586 nfsdstats
.nfs4_opcount
[opnum
]++;
1589 static const struct nfsd4_operation nfsd4_ops
[];
1591 static const char *nfsd4_op_name(unsigned opnum
);
1594 * Enforce NFSv4.1 COMPOUND ordering rules:
1596 * Also note, enforced elsewhere:
1597 * - SEQUENCE other than as first op results in
1598 * NFS4ERR_SEQUENCE_POS. (Enforced in nfsd4_sequence().)
1599 * - BIND_CONN_TO_SESSION must be the only op in its compound.
1600 * (Enforced in nfsd4_bind_conn_to_session().)
1601 * - DESTROY_SESSION must be the final operation in a compound, if
1602 * sessionid's in SEQUENCE and DESTROY_SESSION are the same.
1603 * (Enforced in nfsd4_destroy_session().)
1605 static __be32
nfs41_check_op_ordering(struct nfsd4_compoundargs
*args
)
1607 struct nfsd4_op
*op
= &args
->ops
[0];
1609 /* These ordering requirements don't apply to NFSv4.0: */
1610 if (args
->minorversion
== 0)
1612 /* This is weird, but OK, not our problem: */
1613 if (args
->opcnt
== 0)
1615 if (op
->status
== nfserr_op_illegal
)
1617 if (!(nfsd4_ops
[op
->opnum
].op_flags
& ALLOWED_AS_FIRST_OP
))
1618 return nfserr_op_not_in_session
;
1619 if (op
->opnum
== OP_SEQUENCE
)
1621 if (args
->opcnt
!= 1)
1622 return nfserr_not_only_op
;
1626 const struct nfsd4_operation
*OPDESC(struct nfsd4_op
*op
)
1628 return &nfsd4_ops
[op
->opnum
];
1631 bool nfsd4_cache_this_op(struct nfsd4_op
*op
)
1633 if (op
->opnum
== OP_ILLEGAL
)
1635 return OPDESC(op
)->op_flags
& OP_CACHEME
;
1638 static bool need_wrongsec_check(struct svc_rqst
*rqstp
)
1640 struct nfsd4_compoundres
*resp
= rqstp
->rq_resp
;
1641 struct nfsd4_compoundargs
*argp
= rqstp
->rq_argp
;
1642 struct nfsd4_op
*this = &argp
->ops
[resp
->opcnt
- 1];
1643 struct nfsd4_op
*next
= &argp
->ops
[resp
->opcnt
];
1644 const struct nfsd4_operation
*thisd
= OPDESC(this);
1645 const struct nfsd4_operation
*nextd
;
1648 * Most ops check wronsec on our own; only the putfh-like ops
1649 * have special rules.
1651 if (!(thisd
->op_flags
& OP_IS_PUTFH_LIKE
))
1654 * rfc 5661 2.6.3.1.1.6: don't bother erroring out a
1655 * put-filehandle operation if we're not going to use the
1658 if (argp
->opcnt
== resp
->opcnt
)
1660 if (next
->opnum
== OP_ILLEGAL
)
1662 nextd
= OPDESC(next
);
1664 * Rest of 2.6.3.1.1: certain operations will return WRONGSEC
1665 * errors themselves as necessary; others should check for them
1668 return !(nextd
->op_flags
& OP_HANDLES_WRONGSEC
);
1671 static void svcxdr_init_encode(struct svc_rqst
*rqstp
,
1672 struct nfsd4_compoundres
*resp
)
1674 struct xdr_stream
*xdr
= &resp
->xdr
;
1675 struct xdr_buf
*buf
= &rqstp
->rq_res
;
1676 struct kvec
*head
= buf
->head
;
1680 xdr
->p
= head
->iov_base
+ head
->iov_len
;
1681 xdr
->end
= head
->iov_base
+ PAGE_SIZE
- rqstp
->rq_auth_slack
;
1682 /* Tail and page_len should be zero at this point: */
1683 buf
->len
= buf
->head
[0].iov_len
;
1684 xdr
->scratch
.iov_len
= 0;
1685 xdr
->page_ptr
= buf
->pages
- 1;
1686 buf
->buflen
= PAGE_SIZE
* (1 + rqstp
->rq_page_end
- buf
->pages
)
1687 - rqstp
->rq_auth_slack
;
1694 nfsd4_proc_compound(struct svc_rqst
*rqstp
)
1696 struct nfsd4_compoundargs
*args
= rqstp
->rq_argp
;
1697 struct nfsd4_compoundres
*resp
= rqstp
->rq_resp
;
1698 struct nfsd4_op
*op
;
1699 struct nfsd4_compound_state
*cstate
= &resp
->cstate
;
1700 struct svc_fh
*current_fh
= &cstate
->current_fh
;
1701 struct svc_fh
*save_fh
= &cstate
->save_fh
;
1704 svcxdr_init_encode(rqstp
, resp
);
1705 resp
->tagp
= resp
->xdr
.p
;
1706 /* reserve space for: taglen, tag, and opcnt */
1707 xdr_reserve_space(&resp
->xdr
, 8 + args
->taglen
);
1708 resp
->taglen
= args
->taglen
;
1709 resp
->tag
= args
->tag
;
1710 resp
->rqstp
= rqstp
;
1711 cstate
->minorversion
= args
->minorversion
;
1712 fh_init(current_fh
, NFS4_FHSIZE
);
1713 fh_init(save_fh
, NFS4_FHSIZE
);
1715 * Don't use the deferral mechanism for NFSv4; compounds make it
1716 * too hard to avoid non-idempotency problems.
1718 clear_bit(RQ_USEDEFERRAL
, &rqstp
->rq_flags
);
1721 * According to RFC3010, this takes precedence over all other errors.
1723 status
= nfserr_minor_vers_mismatch
;
1724 if (nfsd_minorversion(args
->minorversion
, NFSD_TEST
) <= 0)
1727 status
= nfs41_check_op_ordering(args
);
1730 op
->status
= status
;
1735 while (!status
&& resp
->opcnt
< args
->opcnt
) {
1736 op
= &args
->ops
[resp
->opcnt
++];
1738 dprintk("nfsv4 compound op #%d/%d: %d (%s)\n",
1739 resp
->opcnt
, args
->opcnt
, op
->opnum
,
1740 nfsd4_op_name(op
->opnum
));
1742 * The XDR decode routines may have pre-set op->status;
1743 * for example, if there is a miscellaneous XDR error
1744 * it will be set to nfserr_bad_xdr.
1747 if (op
->opnum
== OP_OPEN
)
1748 op
->status
= nfsd4_open_omfg(rqstp
, cstate
, op
);
1752 if (!current_fh
->fh_dentry
) {
1753 if (!(op
->opdesc
->op_flags
& ALLOWED_WITHOUT_FH
)) {
1754 op
->status
= nfserr_nofilehandle
;
1757 } else if (current_fh
->fh_export
->ex_fslocs
.migrated
&&
1758 !(op
->opdesc
->op_flags
& ALLOWED_ON_ABSENT_FS
)) {
1759 op
->status
= nfserr_moved
;
1763 fh_clear_wcc(current_fh
);
1765 /* If op is non-idempotent */
1766 if (op
->opdesc
->op_flags
& OP_MODIFIES_SOMETHING
) {
1768 * Don't execute this op if we couldn't encode a
1771 u32 plen
= op
->opdesc
->op_rsize_bop(rqstp
, op
);
1773 * Plus if there's another operation, make sure
1774 * we'll have space to at least encode an error:
1776 if (resp
->opcnt
< args
->opcnt
)
1777 plen
+= COMPOUND_ERR_SLACK_SPACE
;
1778 op
->status
= nfsd4_check_resp_size(resp
, plen
);
1784 if (op
->opdesc
->op_get_currentstateid
)
1785 op
->opdesc
->op_get_currentstateid(cstate
, &op
->u
);
1786 op
->status
= op
->opdesc
->op_func(rqstp
, cstate
, &op
->u
);
1788 /* Only from SEQUENCE */
1789 if (cstate
->status
== nfserr_replay_cache
) {
1790 dprintk("%s NFS4.1 replay from cache\n", __func__
);
1791 status
= op
->status
;
1795 if (op
->opdesc
->op_set_currentstateid
)
1796 op
->opdesc
->op_set_currentstateid(cstate
, &op
->u
);
1798 if (op
->opdesc
->op_flags
& OP_CLEAR_STATEID
)
1799 clear_current_stateid(cstate
);
1801 if (need_wrongsec_check(rqstp
))
1802 op
->status
= check_nfsd_access(current_fh
->fh_export
, rqstp
);
1805 if (op
->status
== nfserr_replay_me
) {
1806 op
->replay
= &cstate
->replay_owner
->so_replay
;
1807 nfsd4_encode_replay(&resp
->xdr
, op
);
1808 status
= op
->status
= op
->replay
->rp_status
;
1810 nfsd4_encode_operation(resp
, op
);
1811 status
= op
->status
;
1814 dprintk("nfsv4 compound op %p opcnt %d #%d: %d: status %d\n",
1815 args
->ops
, args
->opcnt
, resp
->opcnt
, op
->opnum
,
1816 be32_to_cpu(status
));
1818 nfsd4_cstate_clear_replay(cstate
);
1819 nfsd4_increment_op_stats(op
->opnum
);
1822 cstate
->status
= status
;
1825 BUG_ON(cstate
->replay_owner
);
1827 /* Reset deferral mechanism for RPC deferrals */
1828 set_bit(RQ_USEDEFERRAL
, &rqstp
->rq_flags
);
1829 dprintk("nfsv4 compound returned %d\n", ntohl(status
));
1833 #define op_encode_hdr_size (2)
1834 #define op_encode_stateid_maxsz (XDR_QUADLEN(NFS4_STATEID_SIZE))
1835 #define op_encode_verifier_maxsz (XDR_QUADLEN(NFS4_VERIFIER_SIZE))
1836 #define op_encode_change_info_maxsz (5)
1837 #define nfs4_fattr_bitmap_maxsz (4)
1839 /* We'll fall back on returning no lockowner if run out of space: */
1840 #define op_encode_lockowner_maxsz (0)
1841 #define op_encode_lock_denied_maxsz (8 + op_encode_lockowner_maxsz)
1843 #define nfs4_owner_maxsz (1 + XDR_QUADLEN(IDMAP_NAMESZ))
1845 #define op_encode_ace_maxsz (3 + nfs4_owner_maxsz)
1846 #define op_encode_delegation_maxsz (1 + op_encode_stateid_maxsz + 1 + \
1847 op_encode_ace_maxsz)
1849 #define op_encode_channel_attrs_maxsz (6 + 1 + 1)
1851 static inline u32
nfsd4_only_status_rsize(struct svc_rqst
*rqstp
, struct nfsd4_op
*op
)
1853 return (op_encode_hdr_size
) * sizeof(__be32
);
1856 static inline u32
nfsd4_status_stateid_rsize(struct svc_rqst
*rqstp
, struct nfsd4_op
*op
)
1858 return (op_encode_hdr_size
+ op_encode_stateid_maxsz
)* sizeof(__be32
);
1861 static inline u32
nfsd4_access_rsize(struct svc_rqst
*rqstp
, struct nfsd4_op
*op
)
1863 /* ac_supported, ac_resp_access */
1864 return (op_encode_hdr_size
+ 2)* sizeof(__be32
);
1867 static inline u32
nfsd4_commit_rsize(struct svc_rqst
*rqstp
, struct nfsd4_op
*op
)
1869 return (op_encode_hdr_size
+ op_encode_verifier_maxsz
) * sizeof(__be32
);
1872 static inline u32
nfsd4_create_rsize(struct svc_rqst
*rqstp
, struct nfsd4_op
*op
)
1874 return (op_encode_hdr_size
+ op_encode_change_info_maxsz
1875 + nfs4_fattr_bitmap_maxsz
) * sizeof(__be32
);
1879 * Note since this is an idempotent operation we won't insist on failing
1880 * the op prematurely if the estimate is too large. We may turn off splice
1881 * reads unnecessarily.
1883 static inline u32
nfsd4_getattr_rsize(struct svc_rqst
*rqstp
,
1884 struct nfsd4_op
*op
)
1886 u32
*bmap
= op
->u
.getattr
.ga_bmval
;
1887 u32 bmap0
= bmap
[0], bmap1
= bmap
[1], bmap2
= bmap
[2];
1890 if (bmap0
& FATTR4_WORD0_ACL
)
1891 return svc_max_payload(rqstp
);
1892 if (bmap0
& FATTR4_WORD0_FS_LOCATIONS
)
1893 return svc_max_payload(rqstp
);
1895 if (bmap1
& FATTR4_WORD1_OWNER
) {
1896 ret
+= IDMAP_NAMESZ
+ 4;
1897 bmap1
&= ~FATTR4_WORD1_OWNER
;
1899 if (bmap1
& FATTR4_WORD1_OWNER_GROUP
) {
1900 ret
+= IDMAP_NAMESZ
+ 4;
1901 bmap1
&= ~FATTR4_WORD1_OWNER_GROUP
;
1903 if (bmap0
& FATTR4_WORD0_FILEHANDLE
) {
1904 ret
+= NFS4_FHSIZE
+ 4;
1905 bmap0
&= ~FATTR4_WORD0_FILEHANDLE
;
1907 if (bmap2
& FATTR4_WORD2_SECURITY_LABEL
) {
1908 ret
+= NFS4_MAXLABELLEN
+ 12;
1909 bmap2
&= ~FATTR4_WORD2_SECURITY_LABEL
;
1912 * Largest of remaining attributes are 16 bytes (e.g.,
1913 * supported_attributes)
1915 ret
+= 16 * (hweight32(bmap0
) + hweight32(bmap1
) + hweight32(bmap2
));
1916 /* bitmask, length */
1921 static inline u32
nfsd4_getfh_rsize(struct svc_rqst
*rqstp
, struct nfsd4_op
*op
)
1923 return (op_encode_hdr_size
+ 1) * sizeof(__be32
) + NFS4_FHSIZE
;
1926 static inline u32
nfsd4_link_rsize(struct svc_rqst
*rqstp
, struct nfsd4_op
*op
)
1928 return (op_encode_hdr_size
+ op_encode_change_info_maxsz
)
1932 static inline u32
nfsd4_lock_rsize(struct svc_rqst
*rqstp
, struct nfsd4_op
*op
)
1934 return (op_encode_hdr_size
+ op_encode_lock_denied_maxsz
)
1938 static inline u32
nfsd4_open_rsize(struct svc_rqst
*rqstp
, struct nfsd4_op
*op
)
1940 return (op_encode_hdr_size
+ op_encode_stateid_maxsz
1941 + op_encode_change_info_maxsz
+ 1
1942 + nfs4_fattr_bitmap_maxsz
1943 + op_encode_delegation_maxsz
) * sizeof(__be32
);
1946 static inline u32
nfsd4_read_rsize(struct svc_rqst
*rqstp
, struct nfsd4_op
*op
)
1948 u32 maxcount
= 0, rlen
= 0;
1950 maxcount
= svc_max_payload(rqstp
);
1951 rlen
= min(op
->u
.read
.rd_length
, maxcount
);
1953 return (op_encode_hdr_size
+ 2 + XDR_QUADLEN(rlen
)) * sizeof(__be32
);
1956 static inline u32
nfsd4_readdir_rsize(struct svc_rqst
*rqstp
, struct nfsd4_op
*op
)
1958 u32 maxcount
= 0, rlen
= 0;
1960 maxcount
= svc_max_payload(rqstp
);
1961 rlen
= min(op
->u
.readdir
.rd_maxcount
, maxcount
);
1963 return (op_encode_hdr_size
+ op_encode_verifier_maxsz
+
1964 XDR_QUADLEN(rlen
)) * sizeof(__be32
);
1967 static inline u32
nfsd4_readlink_rsize(struct svc_rqst
*rqstp
, struct nfsd4_op
*op
)
1969 return (op_encode_hdr_size
+ 1) * sizeof(__be32
) + PAGE_SIZE
;
1972 static inline u32
nfsd4_remove_rsize(struct svc_rqst
*rqstp
, struct nfsd4_op
*op
)
1974 return (op_encode_hdr_size
+ op_encode_change_info_maxsz
)
1978 static inline u32
nfsd4_rename_rsize(struct svc_rqst
*rqstp
, struct nfsd4_op
*op
)
1980 return (op_encode_hdr_size
+ op_encode_change_info_maxsz
1981 + op_encode_change_info_maxsz
) * sizeof(__be32
);
1984 static inline u32
nfsd4_sequence_rsize(struct svc_rqst
*rqstp
,
1985 struct nfsd4_op
*op
)
1987 return (op_encode_hdr_size
1988 + XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN
) + 5) * sizeof(__be32
);
1991 static inline u32
nfsd4_test_stateid_rsize(struct svc_rqst
*rqstp
, struct nfsd4_op
*op
)
1993 return (op_encode_hdr_size
+ 1 + op
->u
.test_stateid
.ts_num_ids
)
1997 static inline u32
nfsd4_setattr_rsize(struct svc_rqst
*rqstp
, struct nfsd4_op
*op
)
1999 return (op_encode_hdr_size
+ nfs4_fattr_bitmap_maxsz
) * sizeof(__be32
);
2002 static inline u32
nfsd4_secinfo_rsize(struct svc_rqst
*rqstp
, struct nfsd4_op
*op
)
2004 return (op_encode_hdr_size
+ RPC_AUTH_MAXFLAVOR
*
2005 (4 + XDR_QUADLEN(GSS_OID_MAX_LEN
))) * sizeof(__be32
);
2008 static inline u32
nfsd4_setclientid_rsize(struct svc_rqst
*rqstp
, struct nfsd4_op
*op
)
2010 return (op_encode_hdr_size
+ 2 + XDR_QUADLEN(NFS4_VERIFIER_SIZE
)) *
2014 static inline u32
nfsd4_write_rsize(struct svc_rqst
*rqstp
, struct nfsd4_op
*op
)
2016 return (op_encode_hdr_size
+ 2 + op_encode_verifier_maxsz
) * sizeof(__be32
);
2019 static inline u32
nfsd4_exchange_id_rsize(struct svc_rqst
*rqstp
, struct nfsd4_op
*op
)
2021 return (op_encode_hdr_size
+ 2 + 1 + /* eir_clientid, eir_sequenceid */\
2022 1 + 1 + /* eir_flags, spr_how */\
2023 4 + /* spo_must_enforce & _allow with bitmap */\
2024 2 + /*eir_server_owner.so_minor_id */\
2025 /* eir_server_owner.so_major_id<> */\
2026 XDR_QUADLEN(NFS4_OPAQUE_LIMIT
) + 1 +\
2027 /* eir_server_scope<> */\
2028 XDR_QUADLEN(NFS4_OPAQUE_LIMIT
) + 1 +\
2029 1 + /* eir_server_impl_id array length */\
2030 0 /* ignored eir_server_impl_id contents */) * sizeof(__be32
);
2033 static inline u32
nfsd4_bind_conn_to_session_rsize(struct svc_rqst
*rqstp
, struct nfsd4_op
*op
)
2035 return (op_encode_hdr_size
+ \
2036 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN
) + /* bctsr_sessid */\
2037 2 /* bctsr_dir, use_conn_in_rdma_mode */) * sizeof(__be32
);
2040 static inline u32
nfsd4_create_session_rsize(struct svc_rqst
*rqstp
, struct nfsd4_op
*op
)
2042 return (op_encode_hdr_size
+ \
2043 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN
) + /* sessionid */\
2044 2 + /* csr_sequence, csr_flags */\
2045 op_encode_channel_attrs_maxsz
+ \
2046 op_encode_channel_attrs_maxsz
) * sizeof(__be32
);
2049 static inline u32
nfsd4_copy_rsize(struct svc_rqst
*rqstp
, struct nfsd4_op
*op
)
2051 return (op_encode_hdr_size
+
2052 1 /* wr_callback */ +
2053 op_encode_stateid_maxsz
/* wr_callback */ +
2055 1 /* wr_committed */ +
2056 op_encode_verifier_maxsz
+
2057 1 /* cr_consecutive */ +
2058 1 /* cr_synchronous */) * sizeof(__be32
);
2061 #ifdef CONFIG_NFSD_PNFS
2062 static inline u32
nfsd4_getdeviceinfo_rsize(struct svc_rqst
*rqstp
, struct nfsd4_op
*op
)
2064 u32 maxcount
= 0, rlen
= 0;
2066 maxcount
= svc_max_payload(rqstp
);
2067 rlen
= min(op
->u
.getdeviceinfo
.gd_maxcount
, maxcount
);
2069 return (op_encode_hdr_size
+
2070 1 /* gd_layout_type*/ +
2072 2 /* gd_notify_types */) * sizeof(__be32
);
2076 * At this stage we don't really know what layout driver will handle the request,
2077 * so we need to define an arbitrary upper bound here.
2079 #define MAX_LAYOUT_SIZE 128
2080 static inline u32
nfsd4_layoutget_rsize(struct svc_rqst
*rqstp
, struct nfsd4_op
*op
)
2082 return (op_encode_hdr_size
+
2083 1 /* logr_return_on_close */ +
2084 op_encode_stateid_maxsz
+
2085 1 /* nr of layouts */ +
2086 MAX_LAYOUT_SIZE
) * sizeof(__be32
);
2089 static inline u32
nfsd4_layoutcommit_rsize(struct svc_rqst
*rqstp
, struct nfsd4_op
*op
)
2091 return (op_encode_hdr_size
+
2092 1 /* locr_newsize */ +
2093 2 /* ns_size */) * sizeof(__be32
);
2096 static inline u32
nfsd4_layoutreturn_rsize(struct svc_rqst
*rqstp
, struct nfsd4_op
*op
)
2098 return (op_encode_hdr_size
+
2099 1 /* lrs_stateid */ +
2100 op_encode_stateid_maxsz
) * sizeof(__be32
);
2102 #endif /* CONFIG_NFSD_PNFS */
2105 static inline u32
nfsd4_seek_rsize(struct svc_rqst
*rqstp
, struct nfsd4_op
*op
)
2107 return (op_encode_hdr_size
+ 3) * sizeof(__be32
);
2110 static const struct nfsd4_operation nfsd4_ops
[] = {
2112 .op_func
= nfsd4_access
,
2113 .op_name
= "OP_ACCESS",
2114 .op_rsize_bop
= nfsd4_access_rsize
,
2117 .op_func
= nfsd4_close
,
2118 .op_flags
= OP_MODIFIES_SOMETHING
,
2119 .op_name
= "OP_CLOSE",
2120 .op_rsize_bop
= nfsd4_status_stateid_rsize
,
2121 .op_get_currentstateid
= nfsd4_get_closestateid
,
2122 .op_set_currentstateid
= nfsd4_set_closestateid
,
2125 .op_func
= nfsd4_commit
,
2126 .op_flags
= OP_MODIFIES_SOMETHING
,
2127 .op_name
= "OP_COMMIT",
2128 .op_rsize_bop
= nfsd4_commit_rsize
,
2131 .op_func
= nfsd4_create
,
2132 .op_flags
= OP_MODIFIES_SOMETHING
| OP_CACHEME
| OP_CLEAR_STATEID
,
2133 .op_name
= "OP_CREATE",
2134 .op_rsize_bop
= nfsd4_create_rsize
,
2136 [OP_DELEGRETURN
] = {
2137 .op_func
= nfsd4_delegreturn
,
2138 .op_flags
= OP_MODIFIES_SOMETHING
,
2139 .op_name
= "OP_DELEGRETURN",
2140 .op_rsize_bop
= nfsd4_only_status_rsize
,
2141 .op_get_currentstateid
= nfsd4_get_delegreturnstateid
,
2144 .op_func
= nfsd4_getattr
,
2145 .op_flags
= ALLOWED_ON_ABSENT_FS
,
2146 .op_rsize_bop
= nfsd4_getattr_rsize
,
2147 .op_name
= "OP_GETATTR",
2150 .op_func
= nfsd4_getfh
,
2151 .op_name
= "OP_GETFH",
2152 .op_rsize_bop
= nfsd4_getfh_rsize
,
2155 .op_func
= nfsd4_link
,
2156 .op_flags
= ALLOWED_ON_ABSENT_FS
| OP_MODIFIES_SOMETHING
2158 .op_name
= "OP_LINK",
2159 .op_rsize_bop
= nfsd4_link_rsize
,
2162 .op_func
= nfsd4_lock
,
2163 .op_flags
= OP_MODIFIES_SOMETHING
|
2164 OP_NONTRIVIAL_ERROR_ENCODE
,
2165 .op_name
= "OP_LOCK",
2166 .op_rsize_bop
= nfsd4_lock_rsize
,
2167 .op_set_currentstateid
= nfsd4_set_lockstateid
,
2170 .op_func
= nfsd4_lockt
,
2171 .op_flags
= OP_NONTRIVIAL_ERROR_ENCODE
,
2172 .op_name
= "OP_LOCKT",
2173 .op_rsize_bop
= nfsd4_lock_rsize
,
2176 .op_func
= nfsd4_locku
,
2177 .op_flags
= OP_MODIFIES_SOMETHING
,
2178 .op_name
= "OP_LOCKU",
2179 .op_rsize_bop
= nfsd4_status_stateid_rsize
,
2180 .op_get_currentstateid
= nfsd4_get_lockustateid
,
2183 .op_func
= nfsd4_lookup
,
2184 .op_flags
= OP_HANDLES_WRONGSEC
| OP_CLEAR_STATEID
,
2185 .op_name
= "OP_LOOKUP",
2186 .op_rsize_bop
= nfsd4_only_status_rsize
,
2189 .op_func
= nfsd4_lookupp
,
2190 .op_flags
= OP_HANDLES_WRONGSEC
| OP_CLEAR_STATEID
,
2191 .op_name
= "OP_LOOKUPP",
2192 .op_rsize_bop
= nfsd4_only_status_rsize
,
2195 .op_func
= nfsd4_nverify
,
2196 .op_name
= "OP_NVERIFY",
2197 .op_rsize_bop
= nfsd4_only_status_rsize
,
2200 .op_func
= nfsd4_open
,
2201 .op_flags
= OP_HANDLES_WRONGSEC
| OP_MODIFIES_SOMETHING
,
2202 .op_name
= "OP_OPEN",
2203 .op_rsize_bop
= nfsd4_open_rsize
,
2204 .op_set_currentstateid
= nfsd4_set_openstateid
,
2206 [OP_OPEN_CONFIRM
] = {
2207 .op_func
= nfsd4_open_confirm
,
2208 .op_flags
= OP_MODIFIES_SOMETHING
,
2209 .op_name
= "OP_OPEN_CONFIRM",
2210 .op_rsize_bop
= nfsd4_status_stateid_rsize
,
2212 [OP_OPEN_DOWNGRADE
] = {
2213 .op_func
= nfsd4_open_downgrade
,
2214 .op_flags
= OP_MODIFIES_SOMETHING
,
2215 .op_name
= "OP_OPEN_DOWNGRADE",
2216 .op_rsize_bop
= nfsd4_status_stateid_rsize
,
2217 .op_get_currentstateid
= nfsd4_get_opendowngradestateid
,
2218 .op_set_currentstateid
= nfsd4_set_opendowngradestateid
,
2221 .op_func
= nfsd4_putfh
,
2222 .op_flags
= ALLOWED_WITHOUT_FH
| ALLOWED_ON_ABSENT_FS
2223 | OP_IS_PUTFH_LIKE
| OP_CLEAR_STATEID
,
2224 .op_name
= "OP_PUTFH",
2225 .op_rsize_bop
= nfsd4_only_status_rsize
,
2228 .op_func
= nfsd4_putrootfh
,
2229 .op_flags
= ALLOWED_WITHOUT_FH
| ALLOWED_ON_ABSENT_FS
2230 | OP_IS_PUTFH_LIKE
| OP_CLEAR_STATEID
,
2231 .op_name
= "OP_PUTPUBFH",
2232 .op_rsize_bop
= nfsd4_only_status_rsize
,
2235 .op_func
= nfsd4_putrootfh
,
2236 .op_flags
= ALLOWED_WITHOUT_FH
| ALLOWED_ON_ABSENT_FS
2237 | OP_IS_PUTFH_LIKE
| OP_CLEAR_STATEID
,
2238 .op_name
= "OP_PUTROOTFH",
2239 .op_rsize_bop
= nfsd4_only_status_rsize
,
2242 .op_func
= nfsd4_read
,
2243 .op_release
= nfsd4_read_release
,
2244 .op_name
= "OP_READ",
2245 .op_rsize_bop
= nfsd4_read_rsize
,
2246 .op_get_currentstateid
= nfsd4_get_readstateid
,
2249 .op_func
= nfsd4_readdir
,
2250 .op_name
= "OP_READDIR",
2251 .op_rsize_bop
= nfsd4_readdir_rsize
,
2254 .op_func
= nfsd4_readlink
,
2255 .op_name
= "OP_READLINK",
2256 .op_rsize_bop
= nfsd4_readlink_rsize
,
2259 .op_func
= nfsd4_remove
,
2260 .op_flags
= OP_MODIFIES_SOMETHING
| OP_CACHEME
,
2261 .op_name
= "OP_REMOVE",
2262 .op_rsize_bop
= nfsd4_remove_rsize
,
2265 .op_func
= nfsd4_rename
,
2266 .op_flags
= OP_MODIFIES_SOMETHING
| OP_CACHEME
,
2267 .op_name
= "OP_RENAME",
2268 .op_rsize_bop
= nfsd4_rename_rsize
,
2271 .op_func
= nfsd4_renew
,
2272 .op_flags
= ALLOWED_WITHOUT_FH
| ALLOWED_ON_ABSENT_FS
2273 | OP_MODIFIES_SOMETHING
,
2274 .op_name
= "OP_RENEW",
2275 .op_rsize_bop
= nfsd4_only_status_rsize
,
2279 .op_func
= nfsd4_restorefh
,
2280 .op_flags
= ALLOWED_WITHOUT_FH
| ALLOWED_ON_ABSENT_FS
2281 | OP_IS_PUTFH_LIKE
| OP_MODIFIES_SOMETHING
,
2282 .op_name
= "OP_RESTOREFH",
2283 .op_rsize_bop
= nfsd4_only_status_rsize
,
2286 .op_func
= nfsd4_savefh
,
2287 .op_flags
= OP_HANDLES_WRONGSEC
| OP_MODIFIES_SOMETHING
,
2288 .op_name
= "OP_SAVEFH",
2289 .op_rsize_bop
= nfsd4_only_status_rsize
,
2292 .op_func
= nfsd4_secinfo
,
2293 .op_release
= nfsd4_secinfo_release
,
2294 .op_flags
= OP_HANDLES_WRONGSEC
,
2295 .op_name
= "OP_SECINFO",
2296 .op_rsize_bop
= nfsd4_secinfo_rsize
,
2299 .op_func
= nfsd4_setattr
,
2300 .op_name
= "OP_SETATTR",
2301 .op_flags
= OP_MODIFIES_SOMETHING
| OP_CACHEME
2302 | OP_NONTRIVIAL_ERROR_ENCODE
,
2303 .op_rsize_bop
= nfsd4_setattr_rsize
,
2304 .op_get_currentstateid
= nfsd4_get_setattrstateid
,
2306 [OP_SETCLIENTID
] = {
2307 .op_func
= nfsd4_setclientid
,
2308 .op_flags
= ALLOWED_WITHOUT_FH
| ALLOWED_ON_ABSENT_FS
2309 | OP_MODIFIES_SOMETHING
| OP_CACHEME
2310 | OP_NONTRIVIAL_ERROR_ENCODE
,
2311 .op_name
= "OP_SETCLIENTID",
2312 .op_rsize_bop
= nfsd4_setclientid_rsize
,
2314 [OP_SETCLIENTID_CONFIRM
] = {
2315 .op_func
= nfsd4_setclientid_confirm
,
2316 .op_flags
= ALLOWED_WITHOUT_FH
| ALLOWED_ON_ABSENT_FS
2317 | OP_MODIFIES_SOMETHING
| OP_CACHEME
,
2318 .op_name
= "OP_SETCLIENTID_CONFIRM",
2319 .op_rsize_bop
= nfsd4_only_status_rsize
,
2322 .op_func
= nfsd4_verify
,
2323 .op_name
= "OP_VERIFY",
2324 .op_rsize_bop
= nfsd4_only_status_rsize
,
2327 .op_func
= nfsd4_write
,
2328 .op_flags
= OP_MODIFIES_SOMETHING
| OP_CACHEME
,
2329 .op_name
= "OP_WRITE",
2330 .op_rsize_bop
= nfsd4_write_rsize
,
2331 .op_get_currentstateid
= nfsd4_get_writestateid
,
2333 [OP_RELEASE_LOCKOWNER
] = {
2334 .op_func
= nfsd4_release_lockowner
,
2335 .op_flags
= ALLOWED_WITHOUT_FH
| ALLOWED_ON_ABSENT_FS
2336 | OP_MODIFIES_SOMETHING
,
2337 .op_name
= "OP_RELEASE_LOCKOWNER",
2338 .op_rsize_bop
= nfsd4_only_status_rsize
,
2341 /* NFSv4.1 operations */
2342 [OP_EXCHANGE_ID
] = {
2343 .op_func
= nfsd4_exchange_id
,
2344 .op_flags
= ALLOWED_WITHOUT_FH
| ALLOWED_AS_FIRST_OP
2345 | OP_MODIFIES_SOMETHING
,
2346 .op_name
= "OP_EXCHANGE_ID",
2347 .op_rsize_bop
= nfsd4_exchange_id_rsize
,
2349 [OP_BACKCHANNEL_CTL
] = {
2350 .op_func
= nfsd4_backchannel_ctl
,
2351 .op_flags
= ALLOWED_WITHOUT_FH
| OP_MODIFIES_SOMETHING
,
2352 .op_name
= "OP_BACKCHANNEL_CTL",
2353 .op_rsize_bop
= nfsd4_only_status_rsize
,
2355 [OP_BIND_CONN_TO_SESSION
] = {
2356 .op_func
= nfsd4_bind_conn_to_session
,
2357 .op_flags
= ALLOWED_WITHOUT_FH
| ALLOWED_AS_FIRST_OP
2358 | OP_MODIFIES_SOMETHING
,
2359 .op_name
= "OP_BIND_CONN_TO_SESSION",
2360 .op_rsize_bop
= nfsd4_bind_conn_to_session_rsize
,
2362 [OP_CREATE_SESSION
] = {
2363 .op_func
= nfsd4_create_session
,
2364 .op_flags
= ALLOWED_WITHOUT_FH
| ALLOWED_AS_FIRST_OP
2365 | OP_MODIFIES_SOMETHING
,
2366 .op_name
= "OP_CREATE_SESSION",
2367 .op_rsize_bop
= nfsd4_create_session_rsize
,
2369 [OP_DESTROY_SESSION
] = {
2370 .op_func
= nfsd4_destroy_session
,
2371 .op_flags
= ALLOWED_WITHOUT_FH
| ALLOWED_AS_FIRST_OP
2372 | OP_MODIFIES_SOMETHING
,
2373 .op_name
= "OP_DESTROY_SESSION",
2374 .op_rsize_bop
= nfsd4_only_status_rsize
,
2377 .op_func
= nfsd4_sequence
,
2378 .op_flags
= ALLOWED_WITHOUT_FH
| ALLOWED_AS_FIRST_OP
,
2379 .op_name
= "OP_SEQUENCE",
2380 .op_rsize_bop
= nfsd4_sequence_rsize
,
2382 [OP_DESTROY_CLIENTID
] = {
2383 .op_func
= nfsd4_destroy_clientid
,
2384 .op_flags
= ALLOWED_WITHOUT_FH
| ALLOWED_AS_FIRST_OP
2385 | OP_MODIFIES_SOMETHING
,
2386 .op_name
= "OP_DESTROY_CLIENTID",
2387 .op_rsize_bop
= nfsd4_only_status_rsize
,
2389 [OP_RECLAIM_COMPLETE
] = {
2390 .op_func
= nfsd4_reclaim_complete
,
2391 .op_flags
= ALLOWED_WITHOUT_FH
| OP_MODIFIES_SOMETHING
,
2392 .op_name
= "OP_RECLAIM_COMPLETE",
2393 .op_rsize_bop
= nfsd4_only_status_rsize
,
2395 [OP_SECINFO_NO_NAME
] = {
2396 .op_func
= nfsd4_secinfo_no_name
,
2397 .op_release
= nfsd4_secinfo_no_name_release
,
2398 .op_flags
= OP_HANDLES_WRONGSEC
,
2399 .op_name
= "OP_SECINFO_NO_NAME",
2400 .op_rsize_bop
= nfsd4_secinfo_rsize
,
2402 [OP_TEST_STATEID
] = {
2403 .op_func
= nfsd4_test_stateid
,
2404 .op_flags
= ALLOWED_WITHOUT_FH
,
2405 .op_name
= "OP_TEST_STATEID",
2406 .op_rsize_bop
= nfsd4_test_stateid_rsize
,
2408 [OP_FREE_STATEID
] = {
2409 .op_func
= nfsd4_free_stateid
,
2410 .op_flags
= ALLOWED_WITHOUT_FH
| OP_MODIFIES_SOMETHING
,
2411 .op_name
= "OP_FREE_STATEID",
2412 .op_get_currentstateid
= nfsd4_get_freestateid
,
2413 .op_rsize_bop
= nfsd4_only_status_rsize
,
2415 #ifdef CONFIG_NFSD_PNFS
2416 [OP_GETDEVICEINFO
] = {
2417 .op_func
= nfsd4_getdeviceinfo
,
2418 .op_release
= nfsd4_getdeviceinfo_release
,
2419 .op_flags
= ALLOWED_WITHOUT_FH
,
2420 .op_name
= "OP_GETDEVICEINFO",
2421 .op_rsize_bop
= nfsd4_getdeviceinfo_rsize
,
2424 .op_func
= nfsd4_layoutget
,
2425 .op_release
= nfsd4_layoutget_release
,
2426 .op_flags
= OP_MODIFIES_SOMETHING
,
2427 .op_name
= "OP_LAYOUTGET",
2428 .op_rsize_bop
= nfsd4_layoutget_rsize
,
2430 [OP_LAYOUTCOMMIT
] = {
2431 .op_func
= nfsd4_layoutcommit
,
2432 .op_flags
= OP_MODIFIES_SOMETHING
,
2433 .op_name
= "OP_LAYOUTCOMMIT",
2434 .op_rsize_bop
= nfsd4_layoutcommit_rsize
,
2436 [OP_LAYOUTRETURN
] = {
2437 .op_func
= nfsd4_layoutreturn
,
2438 .op_flags
= OP_MODIFIES_SOMETHING
,
2439 .op_name
= "OP_LAYOUTRETURN",
2440 .op_rsize_bop
= nfsd4_layoutreturn_rsize
,
2442 #endif /* CONFIG_NFSD_PNFS */
2444 /* NFSv4.2 operations */
2446 .op_func
= nfsd4_allocate
,
2447 .op_flags
= OP_MODIFIES_SOMETHING
| OP_CACHEME
,
2448 .op_name
= "OP_ALLOCATE",
2449 .op_rsize_bop
= nfsd4_only_status_rsize
,
2452 .op_func
= nfsd4_deallocate
,
2453 .op_flags
= OP_MODIFIES_SOMETHING
| OP_CACHEME
,
2454 .op_name
= "OP_DEALLOCATE",
2455 .op_rsize_bop
= nfsd4_only_status_rsize
,
2458 .op_func
= nfsd4_clone
,
2459 .op_flags
= OP_MODIFIES_SOMETHING
| OP_CACHEME
,
2460 .op_name
= "OP_CLONE",
2461 .op_rsize_bop
= nfsd4_only_status_rsize
,
2464 .op_func
= nfsd4_copy
,
2465 .op_flags
= OP_MODIFIES_SOMETHING
| OP_CACHEME
,
2466 .op_name
= "OP_COPY",
2467 .op_rsize_bop
= nfsd4_copy_rsize
,
2470 .op_func
= nfsd4_seek
,
2471 .op_name
= "OP_SEEK",
2472 .op_rsize_bop
= nfsd4_seek_rsize
,
2477 * nfsd4_spo_must_allow - Determine if the compound op contains an
2478 * operation that is allowed to be sent with machine credentials
2480 * @rqstp: a pointer to the struct svc_rqst
2482 * Checks to see if the compound contains a spo_must_allow op
2483 * and confirms that it was sent with the proper machine creds.
2486 bool nfsd4_spo_must_allow(struct svc_rqst
*rqstp
)
2488 struct nfsd4_compoundres
*resp
= rqstp
->rq_resp
;
2489 struct nfsd4_compoundargs
*argp
= rqstp
->rq_argp
;
2490 struct nfsd4_op
*this = &argp
->ops
[resp
->opcnt
- 1];
2491 struct nfsd4_compound_state
*cstate
= &resp
->cstate
;
2492 struct nfs4_op_map
*allow
= &cstate
->clp
->cl_spo_must_allow
;
2495 if (!cstate
->minorversion
)
2498 if (cstate
->spo_must_allowed
== true)
2501 opiter
= resp
->opcnt
;
2502 while (opiter
< argp
->opcnt
) {
2503 this = &argp
->ops
[opiter
++];
2504 if (test_bit(this->opnum
, allow
->u
.longs
) &&
2505 cstate
->clp
->cl_mach_cred
&&
2506 nfsd4_mach_creds_match(cstate
->clp
, rqstp
)) {
2507 cstate
->spo_must_allowed
= true;
2511 cstate
->spo_must_allowed
= false;
2515 int nfsd4_max_reply(struct svc_rqst
*rqstp
, struct nfsd4_op
*op
)
2517 if (op
->opnum
== OP_ILLEGAL
|| op
->status
== nfserr_notsupp
)
2518 return op_encode_hdr_size
* sizeof(__be32
);
2520 BUG_ON(OPDESC(op
)->op_rsize_bop
== NULL
);
2521 return OPDESC(op
)->op_rsize_bop(rqstp
, op
);
2524 void warn_on_nonidempotent_op(struct nfsd4_op
*op
)
2526 if (OPDESC(op
)->op_flags
& OP_MODIFIES_SOMETHING
) {
2527 pr_err("unable to encode reply to nonidempotent op %d (%s)\n",
2528 op
->opnum
, nfsd4_op_name(op
->opnum
));
2533 static const char *nfsd4_op_name(unsigned opnum
)
2535 if (opnum
< ARRAY_SIZE(nfsd4_ops
))
2536 return nfsd4_ops
[opnum
].op_name
;
2537 return "unknown_operation";
2540 #define nfsd4_voidres nfsd4_voidargs
2541 struct nfsd4_voidargs
{ int dummy
; };
2543 static const struct svc_procedure nfsd_procedures4
[2] = {
2545 .pc_func
= nfsd4_proc_null
,
2546 .pc_encode
= nfs4svc_encode_voidres
,
2547 .pc_argsize
= sizeof(struct nfsd4_voidargs
),
2548 .pc_ressize
= sizeof(struct nfsd4_voidres
),
2549 .pc_cachetype
= RC_NOCACHE
,
2552 [NFSPROC4_COMPOUND
] = {
2553 .pc_func
= nfsd4_proc_compound
,
2554 .pc_decode
= nfs4svc_decode_compoundargs
,
2555 .pc_encode
= nfs4svc_encode_compoundres
,
2556 .pc_argsize
= sizeof(struct nfsd4_compoundargs
),
2557 .pc_ressize
= sizeof(struct nfsd4_compoundres
),
2558 .pc_release
= nfsd4_release_compoundargs
,
2559 .pc_cachetype
= RC_NOCACHE
,
2560 .pc_xdrressize
= NFSD_BUFSIZE
/4,
2564 static unsigned int nfsd_count3
[ARRAY_SIZE(nfsd_procedures4
)];
2565 const struct svc_version nfsd_version4
= {
2568 .vs_proc
= nfsd_procedures4
,
2569 .vs_count
= nfsd_count3
,
2570 .vs_dispatch
= nfsd_dispatch
,
2571 .vs_xdrsize
= NFS4_SVC_XDRSIZE
,
2572 .vs_rpcb_optnl
= true,
2573 .vs_need_cong_ctrl
= true,