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
);
357 bool reclaim
= false;
359 dprintk("NFSD: nfsd4_open filename %.*s op_openowner %p\n",
360 (int)open
->op_fname
.len
, open
->op_fname
.data
,
363 /* This check required by spec. */
364 if (open
->op_create
&& open
->op_claim_type
!= NFS4_OPEN_CLAIM_NULL
)
367 open
->op_created
= 0;
370 * Before RECLAIM_COMPLETE done, server should deny new lock
372 if (nfsd4_has_session(cstate
) &&
373 !test_bit(NFSD4_CLIENT_RECLAIM_COMPLETE
,
374 &cstate
->session
->se_client
->cl_flags
) &&
375 open
->op_claim_type
!= NFS4_OPEN_CLAIM_PREVIOUS
)
378 if (nfsd4_has_session(cstate
))
379 copy_clientid(&open
->op_clientid
, cstate
->session
);
381 /* check seqid for replay. set nfs4_owner */
382 status
= nfsd4_process_open1(cstate
, open
, nn
);
383 if (status
== nfserr_replay_me
) {
384 struct nfs4_replay
*rp
= &open
->op_openowner
->oo_owner
.so_replay
;
385 fh_put(&cstate
->current_fh
);
386 fh_copy_shallow(&cstate
->current_fh
.fh_handle
,
388 status
= fh_verify(rqstp
, &cstate
->current_fh
, 0, NFSD_MAY_NOP
);
390 dprintk("nfsd4_open: replay failed"
391 " restoring previous filehandle\n");
393 status
= nfserr_replay_me
;
397 if (open
->op_xdr_error
) {
398 status
= open
->op_xdr_error
;
402 status
= nfsd4_check_open_attributes(rqstp
, cstate
, open
);
406 /* Openowner is now set, so sequence id will get bumped. Now we need
407 * these checks before we do any creates: */
408 status
= nfserr_grace
;
409 if (opens_in_grace(net
) && open
->op_claim_type
!= NFS4_OPEN_CLAIM_PREVIOUS
)
411 status
= nfserr_no_grace
;
412 if (!opens_in_grace(net
) && open
->op_claim_type
== NFS4_OPEN_CLAIM_PREVIOUS
)
415 switch (open
->op_claim_type
) {
416 case NFS4_OPEN_CLAIM_DELEGATE_CUR
:
417 case NFS4_OPEN_CLAIM_NULL
:
418 status
= do_open_lookup(rqstp
, cstate
, open
, &resfh
);
422 case NFS4_OPEN_CLAIM_PREVIOUS
:
423 status
= nfs4_check_open_reclaim(&open
->op_clientid
,
427 open
->op_openowner
->oo_flags
|= NFS4_OO_CONFIRMED
;
429 case NFS4_OPEN_CLAIM_FH
:
430 case NFS4_OPEN_CLAIM_DELEG_CUR_FH
:
431 status
= do_open_fhandle(rqstp
, cstate
, open
);
434 resfh
= &cstate
->current_fh
;
436 case NFS4_OPEN_CLAIM_DELEG_PREV_FH
:
437 case NFS4_OPEN_CLAIM_DELEGATE_PREV
:
438 dprintk("NFSD: unsupported OPEN claim type %d\n",
439 open
->op_claim_type
);
440 status
= nfserr_notsupp
;
443 dprintk("NFSD: Invalid OPEN claim type %d\n",
444 open
->op_claim_type
);
445 status
= nfserr_inval
;
449 * nfsd4_process_open2() does the actual opening of the file. If
450 * successful, it (1) truncates the file if open->op_truncate was
451 * set, (2) sets open->op_stateid, (3) sets open->op_delegation.
453 status
= nfsd4_process_open2(rqstp
, resfh
, open
);
454 WARN(status
&& open
->op_created
,
455 "nfsd4_process_open2 failed to open newly-created file! status=%u\n",
456 be32_to_cpu(status
));
457 if (reclaim
&& !status
)
458 nn
->somebody_reclaimed
= true;
460 if (resfh
&& resfh
!= &cstate
->current_fh
) {
461 fh_dup2(&cstate
->current_fh
, resfh
);
465 nfsd4_cleanup_open_state(cstate
, open
);
466 nfsd4_bump_seqid(cstate
, status
);
471 * OPEN is the only seqid-mutating operation whose decoding can fail
472 * with a seqid-mutating error (specifically, decoding of user names in
473 * the attributes). Therefore we have to do some processing to look up
474 * the stateowner so that we can bump the seqid.
476 static __be32
nfsd4_open_omfg(struct svc_rqst
*rqstp
, struct nfsd4_compound_state
*cstate
, struct nfsd4_op
*op
)
478 struct nfsd4_open
*open
= &op
->u
.open
;
480 if (!seqid_mutating_err(ntohl(op
->status
)))
482 if (nfsd4_has_session(cstate
))
484 open
->op_xdr_error
= op
->status
;
485 return nfsd4_open(rqstp
, cstate
, &op
->u
);
489 * filehandle-manipulating ops.
492 nfsd4_getfh(struct svc_rqst
*rqstp
, struct nfsd4_compound_state
*cstate
,
495 u
->getfh
= &cstate
->current_fh
;
500 nfsd4_putfh(struct svc_rqst
*rqstp
, struct nfsd4_compound_state
*cstate
,
503 struct nfsd4_putfh
*putfh
= &u
->putfh
;
505 fh_put(&cstate
->current_fh
);
506 cstate
->current_fh
.fh_handle
.fh_size
= putfh
->pf_fhlen
;
507 memcpy(&cstate
->current_fh
.fh_handle
.fh_base
, putfh
->pf_fhval
,
509 return fh_verify(rqstp
, &cstate
->current_fh
, 0, NFSD_MAY_BYPASS_GSS
);
513 nfsd4_putrootfh(struct svc_rqst
*rqstp
, struct nfsd4_compound_state
*cstate
,
518 fh_put(&cstate
->current_fh
);
519 status
= exp_pseudoroot(rqstp
, &cstate
->current_fh
);
524 nfsd4_restorefh(struct svc_rqst
*rqstp
, struct nfsd4_compound_state
*cstate
,
527 if (!cstate
->save_fh
.fh_dentry
)
528 return nfserr_restorefh
;
530 fh_dup2(&cstate
->current_fh
, &cstate
->save_fh
);
531 if (HAS_STATE_ID(cstate
, SAVED_STATE_ID_FLAG
)) {
532 memcpy(&cstate
->current_stateid
, &cstate
->save_stateid
, sizeof(stateid_t
));
533 SET_STATE_ID(cstate
, CURRENT_STATE_ID_FLAG
);
539 nfsd4_savefh(struct svc_rqst
*rqstp
, struct nfsd4_compound_state
*cstate
,
542 fh_dup2(&cstate
->save_fh
, &cstate
->current_fh
);
543 if (HAS_STATE_ID(cstate
, CURRENT_STATE_ID_FLAG
)) {
544 memcpy(&cstate
->save_stateid
, &cstate
->current_stateid
, sizeof(stateid_t
));
545 SET_STATE_ID(cstate
, SAVED_STATE_ID_FLAG
);
554 nfsd4_access(struct svc_rqst
*rqstp
, struct nfsd4_compound_state
*cstate
,
557 struct nfsd4_access
*access
= &u
->access
;
559 if (access
->ac_req_access
& ~NFS3_ACCESS_FULL
)
562 access
->ac_resp_access
= access
->ac_req_access
;
563 return nfsd_access(rqstp
, &cstate
->current_fh
, &access
->ac_resp_access
,
564 &access
->ac_supported
);
567 static void gen_boot_verifier(nfs4_verifier
*verifier
, struct net
*net
)
570 struct nfsd_net
*nn
= net_generic(net
, nfsd_net_id
);
573 * This is opaque to client, so no need to byte-swap. Use
574 * __force to keep sparse happy. y2038 time_t overflow is
575 * irrelevant in this usage.
577 verf
[0] = (__force __be32
)nn
->nfssvc_boot
.tv_sec
;
578 verf
[1] = (__force __be32
)nn
->nfssvc_boot
.tv_nsec
;
579 memcpy(verifier
->data
, verf
, sizeof(verifier
->data
));
583 nfsd4_commit(struct svc_rqst
*rqstp
, struct nfsd4_compound_state
*cstate
,
586 struct nfsd4_commit
*commit
= &u
->commit
;
588 gen_boot_verifier(&commit
->co_verf
, SVC_NET(rqstp
));
589 return nfsd_commit(rqstp
, &cstate
->current_fh
, commit
->co_offset
,
594 nfsd4_create(struct svc_rqst
*rqstp
, struct nfsd4_compound_state
*cstate
,
597 struct nfsd4_create
*create
= &u
->create
;
602 fh_init(&resfh
, NFS4_FHSIZE
);
604 status
= fh_verify(rqstp
, &cstate
->current_fh
, S_IFDIR
, NFSD_MAY_NOP
);
608 status
= check_attr_support(rqstp
, cstate
, create
->cr_bmval
,
613 current
->fs
->umask
= create
->cr_umask
;
614 switch (create
->cr_type
) {
616 status
= nfsd_symlink(rqstp
, &cstate
->current_fh
,
617 create
->cr_name
, create
->cr_namelen
,
618 create
->cr_data
, &resfh
);
622 status
= nfserr_inval
;
623 rdev
= MKDEV(create
->cr_specdata1
, create
->cr_specdata2
);
624 if (MAJOR(rdev
) != create
->cr_specdata1
||
625 MINOR(rdev
) != create
->cr_specdata2
)
627 status
= nfsd_create(rqstp
, &cstate
->current_fh
,
628 create
->cr_name
, create
->cr_namelen
,
629 &create
->cr_iattr
, S_IFBLK
, rdev
, &resfh
);
633 status
= nfserr_inval
;
634 rdev
= MKDEV(create
->cr_specdata1
, create
->cr_specdata2
);
635 if (MAJOR(rdev
) != create
->cr_specdata1
||
636 MINOR(rdev
) != create
->cr_specdata2
)
638 status
= nfsd_create(rqstp
, &cstate
->current_fh
,
639 create
->cr_name
, create
->cr_namelen
,
640 &create
->cr_iattr
,S_IFCHR
, rdev
, &resfh
);
644 status
= nfsd_create(rqstp
, &cstate
->current_fh
,
645 create
->cr_name
, create
->cr_namelen
,
646 &create
->cr_iattr
, S_IFSOCK
, 0, &resfh
);
650 status
= nfsd_create(rqstp
, &cstate
->current_fh
,
651 create
->cr_name
, create
->cr_namelen
,
652 &create
->cr_iattr
, S_IFIFO
, 0, &resfh
);
656 create
->cr_iattr
.ia_valid
&= ~ATTR_SIZE
;
657 status
= nfsd_create(rqstp
, &cstate
->current_fh
,
658 create
->cr_name
, create
->cr_namelen
,
659 &create
->cr_iattr
, S_IFDIR
, 0, &resfh
);
663 status
= nfserr_badtype
;
669 if (create
->cr_label
.len
)
670 nfsd4_security_inode_setsecctx(&resfh
, &create
->cr_label
, create
->cr_bmval
);
672 if (create
->cr_acl
!= NULL
)
673 do_set_nfs4_acl(rqstp
, &resfh
, create
->cr_acl
,
676 fh_unlock(&cstate
->current_fh
);
677 set_change_info(&create
->cr_cinfo
, &cstate
->current_fh
);
678 fh_dup2(&cstate
->current_fh
, &resfh
);
682 current
->fs
->umask
= 0;
687 nfsd4_getattr(struct svc_rqst
*rqstp
, struct nfsd4_compound_state
*cstate
,
690 struct nfsd4_getattr
*getattr
= &u
->getattr
;
693 status
= fh_verify(rqstp
, &cstate
->current_fh
, 0, NFSD_MAY_NOP
);
697 if (getattr
->ga_bmval
[1] & NFSD_WRITEONLY_ATTRS_WORD1
)
700 getattr
->ga_bmval
[0] &= nfsd_suppattrs
[cstate
->minorversion
][0];
701 getattr
->ga_bmval
[1] &= nfsd_suppattrs
[cstate
->minorversion
][1];
702 getattr
->ga_bmval
[2] &= nfsd_suppattrs
[cstate
->minorversion
][2];
704 getattr
->ga_fhp
= &cstate
->current_fh
;
709 nfsd4_link(struct svc_rqst
*rqstp
, struct nfsd4_compound_state
*cstate
,
712 struct nfsd4_link
*link
= &u
->link
;
715 status
= nfsd_link(rqstp
, &cstate
->current_fh
,
716 link
->li_name
, link
->li_namelen
, &cstate
->save_fh
);
718 set_change_info(&link
->li_cinfo
, &cstate
->current_fh
);
722 static __be32
nfsd4_do_lookupp(struct svc_rqst
*rqstp
, struct svc_fh
*fh
)
724 struct svc_fh tmp_fh
;
727 fh_init(&tmp_fh
, NFS4_FHSIZE
);
728 ret
= exp_pseudoroot(rqstp
, &tmp_fh
);
731 if (tmp_fh
.fh_dentry
== fh
->fh_dentry
) {
736 return nfsd_lookup(rqstp
, fh
, "..", 2, fh
);
740 nfsd4_lookupp(struct svc_rqst
*rqstp
, struct nfsd4_compound_state
*cstate
,
743 return nfsd4_do_lookupp(rqstp
, &cstate
->current_fh
);
747 nfsd4_lookup(struct svc_rqst
*rqstp
, struct nfsd4_compound_state
*cstate
,
750 return nfsd_lookup(rqstp
, &cstate
->current_fh
,
751 u
->lookup
.lo_name
, u
->lookup
.lo_len
,
752 &cstate
->current_fh
);
756 nfsd4_read(struct svc_rqst
*rqstp
, struct nfsd4_compound_state
*cstate
,
759 struct nfsd4_read
*read
= &u
->read
;
762 read
->rd_filp
= NULL
;
763 if (read
->rd_offset
>= OFFSET_MAX
)
766 trace_nfsd_read_start(rqstp
, &cstate
->current_fh
,
767 read
->rd_offset
, read
->rd_length
);
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
);
801 trace_nfsd_read_done(u
->read
.rd_rqstp
, u
->read
.rd_fhp
,
802 u
->read
.rd_offset
, u
->read
.rd_length
);
806 nfsd4_readdir(struct svc_rqst
*rqstp
, struct nfsd4_compound_state
*cstate
,
809 struct nfsd4_readdir
*readdir
= &u
->readdir
;
810 u64 cookie
= readdir
->rd_cookie
;
811 static const nfs4_verifier zeroverf
;
813 /* no need to check permission - this will be done in nfsd_readdir() */
815 if (readdir
->rd_bmval
[1] & NFSD_WRITEONLY_ATTRS_WORD1
)
818 readdir
->rd_bmval
[0] &= nfsd_suppattrs
[cstate
->minorversion
][0];
819 readdir
->rd_bmval
[1] &= nfsd_suppattrs
[cstate
->minorversion
][1];
820 readdir
->rd_bmval
[2] &= nfsd_suppattrs
[cstate
->minorversion
][2];
822 if ((cookie
== 1) || (cookie
== 2) ||
823 (cookie
== 0 && memcmp(readdir
->rd_verf
.data
, zeroverf
.data
, NFS4_VERIFIER_SIZE
)))
824 return nfserr_bad_cookie
;
826 readdir
->rd_rqstp
= rqstp
;
827 readdir
->rd_fhp
= &cstate
->current_fh
;
832 nfsd4_readlink(struct svc_rqst
*rqstp
, struct nfsd4_compound_state
*cstate
,
835 u
->readlink
.rl_rqstp
= rqstp
;
836 u
->readlink
.rl_fhp
= &cstate
->current_fh
;
841 nfsd4_remove(struct svc_rqst
*rqstp
, struct nfsd4_compound_state
*cstate
,
844 struct nfsd4_remove
*remove
= &u
->remove
;
847 if (opens_in_grace(SVC_NET(rqstp
)))
849 status
= nfsd_unlink(rqstp
, &cstate
->current_fh
, 0,
850 remove
->rm_name
, remove
->rm_namelen
);
852 fh_unlock(&cstate
->current_fh
);
853 set_change_info(&remove
->rm_cinfo
, &cstate
->current_fh
);
859 nfsd4_rename(struct svc_rqst
*rqstp
, struct nfsd4_compound_state
*cstate
,
862 struct nfsd4_rename
*rename
= &u
->rename
;
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
);
990 nfsd4_write(struct svc_rqst
*rqstp
, struct nfsd4_compound_state
*cstate
,
993 struct nfsd4_write
*write
= &u
->write
;
994 stateid_t
*stateid
= &write
->wr_stateid
;
995 struct file
*filp
= NULL
;
996 __be32 status
= nfs_ok
;
1000 if (write
->wr_offset
>= OFFSET_MAX
)
1001 return nfserr_inval
;
1003 cnt
= write
->wr_buflen
;
1004 trace_nfsd_write_start(rqstp
, &cstate
->current_fh
,
1005 write
->wr_offset
, cnt
);
1006 status
= nfs4_preprocess_stateid_op(rqstp
, cstate
, &cstate
->current_fh
,
1007 stateid
, WR_STATE
, &filp
, NULL
);
1009 dprintk("NFSD: nfsd4_write: couldn't process stateid!\n");
1013 write
->wr_how_written
= write
->wr_stable_how
;
1014 gen_boot_verifier(&write
->wr_verifier
, SVC_NET(rqstp
));
1016 nvecs
= svc_fill_write_vector(rqstp
, write
->wr_pagelist
,
1017 &write
->wr_head
, write
->wr_buflen
);
1018 WARN_ON_ONCE(nvecs
> ARRAY_SIZE(rqstp
->rq_vec
));
1020 status
= nfsd_vfs_write(rqstp
, &cstate
->current_fh
, filp
,
1021 write
->wr_offset
, rqstp
->rq_vec
, nvecs
, &cnt
,
1022 write
->wr_how_written
);
1025 write
->wr_bytes_written
= cnt
;
1026 trace_nfsd_write_done(rqstp
, &cstate
->current_fh
,
1027 write
->wr_offset
, cnt
);
1032 nfsd4_verify_copy(struct svc_rqst
*rqstp
, struct nfsd4_compound_state
*cstate
,
1033 stateid_t
*src_stateid
, struct file
**src
,
1034 stateid_t
*dst_stateid
, struct file
**dst
)
1038 if (!cstate
->save_fh
.fh_dentry
)
1039 return nfserr_nofilehandle
;
1041 status
= nfs4_preprocess_stateid_op(rqstp
, cstate
, &cstate
->save_fh
,
1042 src_stateid
, RD_STATE
, src
, NULL
);
1044 dprintk("NFSD: %s: couldn't process src stateid!\n", __func__
);
1048 status
= nfs4_preprocess_stateid_op(rqstp
, cstate
, &cstate
->current_fh
,
1049 dst_stateid
, WR_STATE
, dst
, NULL
);
1051 dprintk("NFSD: %s: couldn't process dst stateid!\n", __func__
);
1055 /* fix up for NFS-specific error code */
1056 if (!S_ISREG(file_inode(*src
)->i_mode
) ||
1057 !S_ISREG(file_inode(*dst
)->i_mode
)) {
1058 status
= nfserr_wrong_type
;
1072 nfsd4_clone(struct svc_rqst
*rqstp
, struct nfsd4_compound_state
*cstate
,
1073 union nfsd4_op_u
*u
)
1075 struct nfsd4_clone
*clone
= &u
->clone
;
1076 struct file
*src
, *dst
;
1079 status
= nfsd4_verify_copy(rqstp
, cstate
, &clone
->cl_src_stateid
, &src
,
1080 &clone
->cl_dst_stateid
, &dst
);
1084 status
= nfsd4_clone_file_range(src
, clone
->cl_src_pos
,
1085 dst
, clone
->cl_dst_pos
, clone
->cl_count
);
1094 nfsd4_copy(struct svc_rqst
*rqstp
, struct nfsd4_compound_state
*cstate
,
1095 union nfsd4_op_u
*u
)
1097 struct nfsd4_copy
*copy
= &u
->copy
;
1098 struct file
*src
, *dst
;
1102 status
= nfsd4_verify_copy(rqstp
, cstate
, ©
->cp_src_stateid
, &src
,
1103 ©
->cp_dst_stateid
, &dst
);
1107 bytes
= nfsd_copy_file_range(src
, copy
->cp_src_pos
,
1108 dst
, copy
->cp_dst_pos
, copy
->cp_count
);
1111 status
= nfserrno(bytes
);
1113 copy
->cp_res
.wr_bytes_written
= bytes
;
1114 copy
->cp_res
.wr_stable_how
= NFS_UNSTABLE
;
1115 copy
->cp_synchronous
= 1;
1116 gen_boot_verifier(©
->cp_res
.wr_verifier
, SVC_NET(rqstp
));
1127 nfsd4_fallocate(struct svc_rqst
*rqstp
, struct nfsd4_compound_state
*cstate
,
1128 struct nfsd4_fallocate
*fallocate
, int flags
)
1130 __be32 status
= nfserr_notsupp
;
1133 status
= nfs4_preprocess_stateid_op(rqstp
, cstate
, &cstate
->current_fh
,
1134 &fallocate
->falloc_stateid
,
1135 WR_STATE
, &file
, NULL
);
1136 if (status
!= nfs_ok
) {
1137 dprintk("NFSD: nfsd4_fallocate: couldn't process stateid!\n");
1141 status
= nfsd4_vfs_fallocate(rqstp
, &cstate
->current_fh
, file
,
1142 fallocate
->falloc_offset
,
1143 fallocate
->falloc_length
,
1150 nfsd4_allocate(struct svc_rqst
*rqstp
, struct nfsd4_compound_state
*cstate
,
1151 union nfsd4_op_u
*u
)
1153 return nfsd4_fallocate(rqstp
, cstate
, &u
->allocate
, 0);
1157 nfsd4_deallocate(struct svc_rqst
*rqstp
, struct nfsd4_compound_state
*cstate
,
1158 union nfsd4_op_u
*u
)
1160 return nfsd4_fallocate(rqstp
, cstate
, &u
->deallocate
,
1161 FALLOC_FL_PUNCH_HOLE
| FALLOC_FL_KEEP_SIZE
);
1165 nfsd4_seek(struct svc_rqst
*rqstp
, struct nfsd4_compound_state
*cstate
,
1166 union nfsd4_op_u
*u
)
1168 struct nfsd4_seek
*seek
= &u
->seek
;
1173 status
= nfs4_preprocess_stateid_op(rqstp
, cstate
, &cstate
->current_fh
,
1174 &seek
->seek_stateid
,
1175 RD_STATE
, &file
, NULL
);
1177 dprintk("NFSD: nfsd4_seek: couldn't process stateid!\n");
1181 switch (seek
->seek_whence
) {
1182 case NFS4_CONTENT_DATA
:
1185 case NFS4_CONTENT_HOLE
:
1189 status
= nfserr_union_notsupp
;
1194 * Note: This call does change file->f_pos, but nothing in NFSD
1195 * should ever file->f_pos.
1197 seek
->seek_pos
= vfs_llseek(file
, seek
->seek_offset
, whence
);
1198 if (seek
->seek_pos
< 0)
1199 status
= nfserrno(seek
->seek_pos
);
1200 else if (seek
->seek_pos
>= i_size_read(file_inode(file
)))
1201 seek
->seek_eof
= true;
1208 /* This routine never returns NFS_OK! If there are no other errors, it
1209 * will return NFSERR_SAME or NFSERR_NOT_SAME depending on whether the
1210 * attributes matched. VERIFY is implemented by mapping NFSERR_SAME
1211 * to NFS_OK after the call; NVERIFY by mapping NFSERR_NOT_SAME to NFS_OK.
1214 _nfsd4_verify(struct svc_rqst
*rqstp
, struct nfsd4_compound_state
*cstate
,
1215 struct nfsd4_verify
*verify
)
1221 status
= fh_verify(rqstp
, &cstate
->current_fh
, 0, NFSD_MAY_NOP
);
1225 status
= check_attr_support(rqstp
, cstate
, verify
->ve_bmval
, NULL
);
1229 if ((verify
->ve_bmval
[0] & FATTR4_WORD0_RDATTR_ERROR
)
1230 || (verify
->ve_bmval
[1] & NFSD_WRITEONLY_ATTRS_WORD1
))
1231 return nfserr_inval
;
1232 if (verify
->ve_attrlen
& 3)
1233 return nfserr_inval
;
1236 * bitmap_len(1) + bitmap(2) + attr_len(1) = 4
1238 count
= 4 + (verify
->ve_attrlen
>> 2);
1239 buf
= kmalloc(count
<< 2, GFP_KERNEL
);
1241 return nfserr_jukebox
;
1244 status
= nfsd4_encode_fattr_to_buf(&p
, count
, &cstate
->current_fh
,
1245 cstate
->current_fh
.fh_export
,
1246 cstate
->current_fh
.fh_dentry
,
1250 * If nfsd4_encode_fattr() ran out of space, assume that's because
1251 * the attributes are longer (hence different) than those given:
1253 if (status
== nfserr_resource
)
1254 status
= nfserr_not_same
;
1259 p
= buf
+ 1 + ntohl(buf
[0]);
1260 status
= nfserr_not_same
;
1261 if (ntohl(*p
++) != verify
->ve_attrlen
)
1263 if (!memcmp(p
, verify
->ve_attrval
, verify
->ve_attrlen
))
1264 status
= nfserr_same
;
1272 nfsd4_nverify(struct svc_rqst
*rqstp
, struct nfsd4_compound_state
*cstate
,
1273 union nfsd4_op_u
*u
)
1277 status
= _nfsd4_verify(rqstp
, cstate
, &u
->verify
);
1278 return status
== nfserr_not_same
? nfs_ok
: status
;
1282 nfsd4_verify(struct svc_rqst
*rqstp
, struct nfsd4_compound_state
*cstate
,
1283 union nfsd4_op_u
*u
)
1287 status
= _nfsd4_verify(rqstp
, cstate
, &u
->nverify
);
1288 return status
== nfserr_same
? nfs_ok
: status
;
1291 #ifdef CONFIG_NFSD_PNFS
1292 static const struct nfsd4_layout_ops
*
1293 nfsd4_layout_verify(struct svc_export
*exp
, unsigned int layout_type
)
1295 if (!exp
->ex_layout_types
) {
1296 dprintk("%s: export does not support pNFS\n", __func__
);
1300 if (layout_type
>= LAYOUT_TYPE_MAX
||
1301 !(exp
->ex_layout_types
& (1 << layout_type
))) {
1302 dprintk("%s: layout type %d not supported\n",
1303 __func__
, layout_type
);
1307 return nfsd4_layout_ops
[layout_type
];
1311 nfsd4_getdeviceinfo(struct svc_rqst
*rqstp
,
1312 struct nfsd4_compound_state
*cstate
, union nfsd4_op_u
*u
)
1314 struct nfsd4_getdeviceinfo
*gdp
= &u
->getdeviceinfo
;
1315 const struct nfsd4_layout_ops
*ops
;
1316 struct nfsd4_deviceid_map
*map
;
1317 struct svc_export
*exp
;
1320 dprintk("%s: layout_type %u dev_id [0x%llx:0x%x] maxcnt %u\n",
1322 gdp
->gd_layout_type
,
1323 gdp
->gd_devid
.fsid_idx
, gdp
->gd_devid
.generation
,
1326 map
= nfsd4_find_devid_map(gdp
->gd_devid
.fsid_idx
);
1328 dprintk("%s: couldn't find device ID to export mapping!\n",
1330 return nfserr_noent
;
1333 exp
= rqst_exp_find(rqstp
, map
->fsid_type
, map
->fsid
);
1335 dprintk("%s: could not find device id\n", __func__
);
1336 return nfserr_noent
;
1339 nfserr
= nfserr_layoutunavailable
;
1340 ops
= nfsd4_layout_verify(exp
, gdp
->gd_layout_type
);
1345 if (gdp
->gd_maxcount
!= 0) {
1346 nfserr
= ops
->proc_getdeviceinfo(exp
->ex_path
.mnt
->mnt_sb
,
1347 rqstp
, cstate
->session
->se_client
, gdp
);
1350 gdp
->gd_notify_types
&= ops
->notify_types
;
1357 nfsd4_getdeviceinfo_release(union nfsd4_op_u
*u
)
1359 kfree(u
->getdeviceinfo
.gd_device
);
1363 nfsd4_layoutget(struct svc_rqst
*rqstp
,
1364 struct nfsd4_compound_state
*cstate
, union nfsd4_op_u
*u
)
1366 struct nfsd4_layoutget
*lgp
= &u
->layoutget
;
1367 struct svc_fh
*current_fh
= &cstate
->current_fh
;
1368 const struct nfsd4_layout_ops
*ops
;
1369 struct nfs4_layout_stateid
*ls
;
1371 int accmode
= NFSD_MAY_READ_IF_EXEC
;
1373 switch (lgp
->lg_seg
.iomode
) {
1375 accmode
|= NFSD_MAY_READ
;
1378 accmode
|= NFSD_MAY_READ
| NFSD_MAY_WRITE
;
1381 dprintk("%s: invalid iomode %d\n",
1382 __func__
, lgp
->lg_seg
.iomode
);
1383 nfserr
= nfserr_badiomode
;
1387 nfserr
= fh_verify(rqstp
, current_fh
, 0, accmode
);
1391 nfserr
= nfserr_layoutunavailable
;
1392 ops
= nfsd4_layout_verify(current_fh
->fh_export
, lgp
->lg_layout_type
);
1397 * Verify minlength and range as per RFC5661:
1398 * o If loga_length is less than loga_minlength,
1399 * the metadata server MUST return NFS4ERR_INVAL.
1400 * o If the sum of loga_offset and loga_minlength exceeds
1401 * NFS4_UINT64_MAX, and loga_minlength is not
1402 * NFS4_UINT64_MAX, the error NFS4ERR_INVAL MUST result.
1403 * o If the sum of loga_offset and loga_length exceeds
1404 * NFS4_UINT64_MAX, and loga_length is not NFS4_UINT64_MAX,
1405 * the error NFS4ERR_INVAL MUST result.
1407 nfserr
= nfserr_inval
;
1408 if (lgp
->lg_seg
.length
< lgp
->lg_minlength
||
1409 (lgp
->lg_minlength
!= NFS4_MAX_UINT64
&&
1410 lgp
->lg_minlength
> NFS4_MAX_UINT64
- lgp
->lg_seg
.offset
) ||
1411 (lgp
->lg_seg
.length
!= NFS4_MAX_UINT64
&&
1412 lgp
->lg_seg
.length
> NFS4_MAX_UINT64
- lgp
->lg_seg
.offset
))
1414 if (lgp
->lg_seg
.length
== 0)
1417 nfserr
= nfsd4_preprocess_layout_stateid(rqstp
, cstate
, &lgp
->lg_sid
,
1418 true, lgp
->lg_layout_type
, &ls
);
1420 trace_nfsd_layout_get_lookup_fail(&lgp
->lg_sid
);
1424 nfserr
= nfserr_recallconflict
;
1425 if (atomic_read(&ls
->ls_stid
.sc_file
->fi_lo_recalls
))
1428 nfserr
= ops
->proc_layoutget(d_inode(current_fh
->fh_dentry
),
1433 nfserr
= nfsd4_insert_layout(lgp
, ls
);
1436 mutex_unlock(&ls
->ls_mutex
);
1437 nfs4_put_stid(&ls
->ls_stid
);
1443 nfsd4_layoutget_release(union nfsd4_op_u
*u
)
1445 kfree(u
->layoutget
.lg_content
);
1449 nfsd4_layoutcommit(struct svc_rqst
*rqstp
,
1450 struct nfsd4_compound_state
*cstate
, union nfsd4_op_u
*u
)
1452 struct nfsd4_layoutcommit
*lcp
= &u
->layoutcommit
;
1453 const struct nfsd4_layout_seg
*seg
= &lcp
->lc_seg
;
1454 struct svc_fh
*current_fh
= &cstate
->current_fh
;
1455 const struct nfsd4_layout_ops
*ops
;
1456 loff_t new_size
= lcp
->lc_last_wr
+ 1;
1457 struct inode
*inode
;
1458 struct nfs4_layout_stateid
*ls
;
1461 nfserr
= fh_verify(rqstp
, current_fh
, 0, NFSD_MAY_WRITE
);
1465 nfserr
= nfserr_layoutunavailable
;
1466 ops
= nfsd4_layout_verify(current_fh
->fh_export
, lcp
->lc_layout_type
);
1469 inode
= d_inode(current_fh
->fh_dentry
);
1471 nfserr
= nfserr_inval
;
1472 if (new_size
<= seg
->offset
) {
1473 dprintk("pnfsd: last write before layout segment\n");
1476 if (new_size
> seg
->offset
+ seg
->length
) {
1477 dprintk("pnfsd: last write beyond layout segment\n");
1480 if (!lcp
->lc_newoffset
&& new_size
> i_size_read(inode
)) {
1481 dprintk("pnfsd: layoutcommit beyond EOF\n");
1485 nfserr
= nfsd4_preprocess_layout_stateid(rqstp
, cstate
, &lcp
->lc_sid
,
1486 false, lcp
->lc_layout_type
,
1489 trace_nfsd_layout_commit_lookup_fail(&lcp
->lc_sid
);
1490 /* fixup error code as per RFC5661 */
1491 if (nfserr
== nfserr_bad_stateid
)
1492 nfserr
= nfserr_badlayout
;
1496 /* LAYOUTCOMMIT does not require any serialization */
1497 mutex_unlock(&ls
->ls_mutex
);
1499 if (new_size
> i_size_read(inode
)) {
1500 lcp
->lc_size_chg
= 1;
1501 lcp
->lc_newsize
= new_size
;
1503 lcp
->lc_size_chg
= 0;
1506 nfserr
= ops
->proc_layoutcommit(inode
, lcp
);
1507 nfs4_put_stid(&ls
->ls_stid
);
1513 nfsd4_layoutreturn(struct svc_rqst
*rqstp
,
1514 struct nfsd4_compound_state
*cstate
, union nfsd4_op_u
*u
)
1516 struct nfsd4_layoutreturn
*lrp
= &u
->layoutreturn
;
1517 struct svc_fh
*current_fh
= &cstate
->current_fh
;
1520 nfserr
= fh_verify(rqstp
, current_fh
, 0, NFSD_MAY_NOP
);
1524 nfserr
= nfserr_layoutunavailable
;
1525 if (!nfsd4_layout_verify(current_fh
->fh_export
, lrp
->lr_layout_type
))
1528 switch (lrp
->lr_seg
.iomode
) {
1534 dprintk("%s: invalid iomode %d\n", __func__
,
1535 lrp
->lr_seg
.iomode
);
1536 nfserr
= nfserr_inval
;
1540 switch (lrp
->lr_return_type
) {
1542 nfserr
= nfsd4_return_file_layouts(rqstp
, cstate
, lrp
);
1546 nfserr
= nfsd4_return_client_layouts(rqstp
, cstate
, lrp
);
1549 dprintk("%s: invalid return_type %d\n", __func__
,
1550 lrp
->lr_return_type
);
1551 nfserr
= nfserr_inval
;
1557 #endif /* CONFIG_NFSD_PNFS */
1563 nfsd4_proc_null(struct svc_rqst
*rqstp
)
1568 static inline void nfsd4_increment_op_stats(u32 opnum
)
1570 if (opnum
>= FIRST_NFS4_OP
&& opnum
<= LAST_NFS4_OP
)
1571 nfsdstats
.nfs4_opcount
[opnum
]++;
1574 static const struct nfsd4_operation nfsd4_ops
[];
1576 static const char *nfsd4_op_name(unsigned opnum
);
1579 * Enforce NFSv4.1 COMPOUND ordering rules:
1581 * Also note, enforced elsewhere:
1582 * - SEQUENCE other than as first op results in
1583 * NFS4ERR_SEQUENCE_POS. (Enforced in nfsd4_sequence().)
1584 * - BIND_CONN_TO_SESSION must be the only op in its compound.
1585 * (Enforced in nfsd4_bind_conn_to_session().)
1586 * - DESTROY_SESSION must be the final operation in a compound, if
1587 * sessionid's in SEQUENCE and DESTROY_SESSION are the same.
1588 * (Enforced in nfsd4_destroy_session().)
1590 static __be32
nfs41_check_op_ordering(struct nfsd4_compoundargs
*args
)
1592 struct nfsd4_op
*first_op
= &args
->ops
[0];
1594 /* These ordering requirements don't apply to NFSv4.0: */
1595 if (args
->minorversion
== 0)
1597 /* This is weird, but OK, not our problem: */
1598 if (args
->opcnt
== 0)
1600 if (first_op
->status
== nfserr_op_illegal
)
1602 if (!(nfsd4_ops
[first_op
->opnum
].op_flags
& ALLOWED_AS_FIRST_OP
))
1603 return nfserr_op_not_in_session
;
1604 if (first_op
->opnum
== OP_SEQUENCE
)
1607 * So first_op is something allowed outside a session, like
1608 * EXCHANGE_ID; but then it has to be the only op in the
1611 if (args
->opcnt
!= 1)
1612 return nfserr_not_only_op
;
1616 const struct nfsd4_operation
*OPDESC(struct nfsd4_op
*op
)
1618 return &nfsd4_ops
[op
->opnum
];
1621 bool nfsd4_cache_this_op(struct nfsd4_op
*op
)
1623 if (op
->opnum
== OP_ILLEGAL
)
1625 return OPDESC(op
)->op_flags
& OP_CACHEME
;
1628 static bool need_wrongsec_check(struct svc_rqst
*rqstp
)
1630 struct nfsd4_compoundres
*resp
= rqstp
->rq_resp
;
1631 struct nfsd4_compoundargs
*argp
= rqstp
->rq_argp
;
1632 struct nfsd4_op
*this = &argp
->ops
[resp
->opcnt
- 1];
1633 struct nfsd4_op
*next
= &argp
->ops
[resp
->opcnt
];
1634 const struct nfsd4_operation
*thisd
= OPDESC(this);
1635 const struct nfsd4_operation
*nextd
;
1638 * Most ops check wronsec on our own; only the putfh-like ops
1639 * have special rules.
1641 if (!(thisd
->op_flags
& OP_IS_PUTFH_LIKE
))
1644 * rfc 5661 2.6.3.1.1.6: don't bother erroring out a
1645 * put-filehandle operation if we're not going to use the
1648 if (argp
->opcnt
== resp
->opcnt
)
1650 if (next
->opnum
== OP_ILLEGAL
)
1652 nextd
= OPDESC(next
);
1654 * Rest of 2.6.3.1.1: certain operations will return WRONGSEC
1655 * errors themselves as necessary; others should check for them
1658 return !(nextd
->op_flags
& OP_HANDLES_WRONGSEC
);
1661 static void svcxdr_init_encode(struct svc_rqst
*rqstp
,
1662 struct nfsd4_compoundres
*resp
)
1664 struct xdr_stream
*xdr
= &resp
->xdr
;
1665 struct xdr_buf
*buf
= &rqstp
->rq_res
;
1666 struct kvec
*head
= buf
->head
;
1670 xdr
->p
= head
->iov_base
+ head
->iov_len
;
1671 xdr
->end
= head
->iov_base
+ PAGE_SIZE
- rqstp
->rq_auth_slack
;
1672 /* Tail and page_len should be zero at this point: */
1673 buf
->len
= buf
->head
[0].iov_len
;
1674 xdr
->scratch
.iov_len
= 0;
1675 xdr
->page_ptr
= buf
->pages
- 1;
1676 buf
->buflen
= PAGE_SIZE
* (1 + rqstp
->rq_page_end
- buf
->pages
)
1677 - rqstp
->rq_auth_slack
;
1684 nfsd4_proc_compound(struct svc_rqst
*rqstp
)
1686 struct nfsd4_compoundargs
*args
= rqstp
->rq_argp
;
1687 struct nfsd4_compoundres
*resp
= rqstp
->rq_resp
;
1688 struct nfsd4_op
*op
;
1689 struct nfsd4_compound_state
*cstate
= &resp
->cstate
;
1690 struct svc_fh
*current_fh
= &cstate
->current_fh
;
1691 struct svc_fh
*save_fh
= &cstate
->save_fh
;
1694 svcxdr_init_encode(rqstp
, resp
);
1695 resp
->tagp
= resp
->xdr
.p
;
1696 /* reserve space for: taglen, tag, and opcnt */
1697 xdr_reserve_space(&resp
->xdr
, 8 + args
->taglen
);
1698 resp
->taglen
= args
->taglen
;
1699 resp
->tag
= args
->tag
;
1700 resp
->rqstp
= rqstp
;
1701 cstate
->minorversion
= args
->minorversion
;
1702 fh_init(current_fh
, NFS4_FHSIZE
);
1703 fh_init(save_fh
, NFS4_FHSIZE
);
1705 * Don't use the deferral mechanism for NFSv4; compounds make it
1706 * too hard to avoid non-idempotency problems.
1708 clear_bit(RQ_USEDEFERRAL
, &rqstp
->rq_flags
);
1711 * According to RFC3010, this takes precedence over all other errors.
1713 status
= nfserr_minor_vers_mismatch
;
1714 if (nfsd_minorversion(args
->minorversion
, NFSD_TEST
) <= 0)
1716 status
= nfserr_resource
;
1717 if (args
->opcnt
> NFSD_MAX_OPS_PER_COMPOUND
)
1720 status
= nfs41_check_op_ordering(args
);
1723 op
->status
= status
;
1728 trace_nfsd_compound(rqstp
, args
->opcnt
);
1729 while (!status
&& resp
->opcnt
< args
->opcnt
) {
1730 op
= &args
->ops
[resp
->opcnt
++];
1733 * The XDR decode routines may have pre-set op->status;
1734 * for example, if there is a miscellaneous XDR error
1735 * it will be set to nfserr_bad_xdr.
1738 if (op
->opnum
== OP_OPEN
)
1739 op
->status
= nfsd4_open_omfg(rqstp
, cstate
, op
);
1743 if (!current_fh
->fh_dentry
) {
1744 if (!(op
->opdesc
->op_flags
& ALLOWED_WITHOUT_FH
)) {
1745 op
->status
= nfserr_nofilehandle
;
1748 } else if (current_fh
->fh_export
->ex_fslocs
.migrated
&&
1749 !(op
->opdesc
->op_flags
& ALLOWED_ON_ABSENT_FS
)) {
1750 op
->status
= nfserr_moved
;
1754 fh_clear_wcc(current_fh
);
1756 /* If op is non-idempotent */
1757 if (op
->opdesc
->op_flags
& OP_MODIFIES_SOMETHING
) {
1759 * Don't execute this op if we couldn't encode a
1762 u32 plen
= op
->opdesc
->op_rsize_bop(rqstp
, op
);
1764 * Plus if there's another operation, make sure
1765 * we'll have space to at least encode an error:
1767 if (resp
->opcnt
< args
->opcnt
)
1768 plen
+= COMPOUND_ERR_SLACK_SPACE
;
1769 op
->status
= nfsd4_check_resp_size(resp
, plen
);
1775 if (op
->opdesc
->op_get_currentstateid
)
1776 op
->opdesc
->op_get_currentstateid(cstate
, &op
->u
);
1777 op
->status
= op
->opdesc
->op_func(rqstp
, cstate
, &op
->u
);
1779 /* Only from SEQUENCE */
1780 if (cstate
->status
== nfserr_replay_cache
) {
1781 dprintk("%s NFS4.1 replay from cache\n", __func__
);
1782 status
= op
->status
;
1786 if (op
->opdesc
->op_set_currentstateid
)
1787 op
->opdesc
->op_set_currentstateid(cstate
, &op
->u
);
1789 if (op
->opdesc
->op_flags
& OP_CLEAR_STATEID
)
1790 clear_current_stateid(cstate
);
1792 if (need_wrongsec_check(rqstp
))
1793 op
->status
= check_nfsd_access(current_fh
->fh_export
, rqstp
);
1796 if (op
->status
== nfserr_replay_me
) {
1797 op
->replay
= &cstate
->replay_owner
->so_replay
;
1798 nfsd4_encode_replay(&resp
->xdr
, op
);
1799 status
= op
->status
= op
->replay
->rp_status
;
1801 nfsd4_encode_operation(resp
, op
);
1802 status
= op
->status
;
1805 trace_nfsd_compound_status(args
->opcnt
, resp
->opcnt
, status
,
1806 nfsd4_op_name(op
->opnum
));
1808 nfsd4_cstate_clear_replay(cstate
);
1809 nfsd4_increment_op_stats(op
->opnum
);
1812 cstate
->status
= status
;
1815 BUG_ON(cstate
->replay_owner
);
1817 /* Reset deferral mechanism for RPC deferrals */
1818 set_bit(RQ_USEDEFERRAL
, &rqstp
->rq_flags
);
1819 dprintk("nfsv4 compound returned %d\n", ntohl(status
));
1823 #define op_encode_hdr_size (2)
1824 #define op_encode_stateid_maxsz (XDR_QUADLEN(NFS4_STATEID_SIZE))
1825 #define op_encode_verifier_maxsz (XDR_QUADLEN(NFS4_VERIFIER_SIZE))
1826 #define op_encode_change_info_maxsz (5)
1827 #define nfs4_fattr_bitmap_maxsz (4)
1829 /* We'll fall back on returning no lockowner if run out of space: */
1830 #define op_encode_lockowner_maxsz (0)
1831 #define op_encode_lock_denied_maxsz (8 + op_encode_lockowner_maxsz)
1833 #define nfs4_owner_maxsz (1 + XDR_QUADLEN(IDMAP_NAMESZ))
1835 #define op_encode_ace_maxsz (3 + nfs4_owner_maxsz)
1836 #define op_encode_delegation_maxsz (1 + op_encode_stateid_maxsz + 1 + \
1837 op_encode_ace_maxsz)
1839 #define op_encode_channel_attrs_maxsz (6 + 1 + 1)
1841 static inline u32
nfsd4_only_status_rsize(struct svc_rqst
*rqstp
, struct nfsd4_op
*op
)
1843 return (op_encode_hdr_size
) * sizeof(__be32
);
1846 static inline u32
nfsd4_status_stateid_rsize(struct svc_rqst
*rqstp
, struct nfsd4_op
*op
)
1848 return (op_encode_hdr_size
+ op_encode_stateid_maxsz
)* sizeof(__be32
);
1851 static inline u32
nfsd4_access_rsize(struct svc_rqst
*rqstp
, struct nfsd4_op
*op
)
1853 /* ac_supported, ac_resp_access */
1854 return (op_encode_hdr_size
+ 2)* sizeof(__be32
);
1857 static inline u32
nfsd4_commit_rsize(struct svc_rqst
*rqstp
, struct nfsd4_op
*op
)
1859 return (op_encode_hdr_size
+ op_encode_verifier_maxsz
) * sizeof(__be32
);
1862 static inline u32
nfsd4_create_rsize(struct svc_rqst
*rqstp
, struct nfsd4_op
*op
)
1864 return (op_encode_hdr_size
+ op_encode_change_info_maxsz
1865 + nfs4_fattr_bitmap_maxsz
) * sizeof(__be32
);
1869 * Note since this is an idempotent operation we won't insist on failing
1870 * the op prematurely if the estimate is too large. We may turn off splice
1871 * reads unnecessarily.
1873 static inline u32
nfsd4_getattr_rsize(struct svc_rqst
*rqstp
,
1874 struct nfsd4_op
*op
)
1876 u32
*bmap
= op
->u
.getattr
.ga_bmval
;
1877 u32 bmap0
= bmap
[0], bmap1
= bmap
[1], bmap2
= bmap
[2];
1880 if (bmap0
& FATTR4_WORD0_ACL
)
1881 return svc_max_payload(rqstp
);
1882 if (bmap0
& FATTR4_WORD0_FS_LOCATIONS
)
1883 return svc_max_payload(rqstp
);
1885 if (bmap1
& FATTR4_WORD1_OWNER
) {
1886 ret
+= IDMAP_NAMESZ
+ 4;
1887 bmap1
&= ~FATTR4_WORD1_OWNER
;
1889 if (bmap1
& FATTR4_WORD1_OWNER_GROUP
) {
1890 ret
+= IDMAP_NAMESZ
+ 4;
1891 bmap1
&= ~FATTR4_WORD1_OWNER_GROUP
;
1893 if (bmap0
& FATTR4_WORD0_FILEHANDLE
) {
1894 ret
+= NFS4_FHSIZE
+ 4;
1895 bmap0
&= ~FATTR4_WORD0_FILEHANDLE
;
1897 if (bmap2
& FATTR4_WORD2_SECURITY_LABEL
) {
1898 ret
+= NFS4_MAXLABELLEN
+ 12;
1899 bmap2
&= ~FATTR4_WORD2_SECURITY_LABEL
;
1902 * Largest of remaining attributes are 16 bytes (e.g.,
1903 * supported_attributes)
1905 ret
+= 16 * (hweight32(bmap0
) + hweight32(bmap1
) + hweight32(bmap2
));
1906 /* bitmask, length */
1911 static inline u32
nfsd4_getfh_rsize(struct svc_rqst
*rqstp
, struct nfsd4_op
*op
)
1913 return (op_encode_hdr_size
+ 1) * sizeof(__be32
) + NFS4_FHSIZE
;
1916 static inline u32
nfsd4_link_rsize(struct svc_rqst
*rqstp
, struct nfsd4_op
*op
)
1918 return (op_encode_hdr_size
+ op_encode_change_info_maxsz
)
1922 static inline u32
nfsd4_lock_rsize(struct svc_rqst
*rqstp
, struct nfsd4_op
*op
)
1924 return (op_encode_hdr_size
+ op_encode_lock_denied_maxsz
)
1928 static inline u32
nfsd4_open_rsize(struct svc_rqst
*rqstp
, struct nfsd4_op
*op
)
1930 return (op_encode_hdr_size
+ op_encode_stateid_maxsz
1931 + op_encode_change_info_maxsz
+ 1
1932 + nfs4_fattr_bitmap_maxsz
1933 + op_encode_delegation_maxsz
) * sizeof(__be32
);
1936 static inline u32
nfsd4_read_rsize(struct svc_rqst
*rqstp
, struct nfsd4_op
*op
)
1938 u32 maxcount
= 0, rlen
= 0;
1940 maxcount
= svc_max_payload(rqstp
);
1941 rlen
= min(op
->u
.read
.rd_length
, maxcount
);
1943 return (op_encode_hdr_size
+ 2 + XDR_QUADLEN(rlen
)) * sizeof(__be32
);
1946 static inline u32
nfsd4_readdir_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
.readdir
.rd_maxcount
, maxcount
);
1953 return (op_encode_hdr_size
+ op_encode_verifier_maxsz
+
1954 XDR_QUADLEN(rlen
)) * sizeof(__be32
);
1957 static inline u32
nfsd4_readlink_rsize(struct svc_rqst
*rqstp
, struct nfsd4_op
*op
)
1959 return (op_encode_hdr_size
+ 1) * sizeof(__be32
) + PAGE_SIZE
;
1962 static inline u32
nfsd4_remove_rsize(struct svc_rqst
*rqstp
, struct nfsd4_op
*op
)
1964 return (op_encode_hdr_size
+ op_encode_change_info_maxsz
)
1968 static inline u32
nfsd4_rename_rsize(struct svc_rqst
*rqstp
, struct nfsd4_op
*op
)
1970 return (op_encode_hdr_size
+ op_encode_change_info_maxsz
1971 + op_encode_change_info_maxsz
) * sizeof(__be32
);
1974 static inline u32
nfsd4_sequence_rsize(struct svc_rqst
*rqstp
,
1975 struct nfsd4_op
*op
)
1977 return (op_encode_hdr_size
1978 + XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN
) + 5) * sizeof(__be32
);
1981 static inline u32
nfsd4_test_stateid_rsize(struct svc_rqst
*rqstp
, struct nfsd4_op
*op
)
1983 return (op_encode_hdr_size
+ 1 + op
->u
.test_stateid
.ts_num_ids
)
1987 static inline u32
nfsd4_setattr_rsize(struct svc_rqst
*rqstp
, struct nfsd4_op
*op
)
1989 return (op_encode_hdr_size
+ nfs4_fattr_bitmap_maxsz
) * sizeof(__be32
);
1992 static inline u32
nfsd4_secinfo_rsize(struct svc_rqst
*rqstp
, struct nfsd4_op
*op
)
1994 return (op_encode_hdr_size
+ RPC_AUTH_MAXFLAVOR
*
1995 (4 + XDR_QUADLEN(GSS_OID_MAX_LEN
))) * sizeof(__be32
);
1998 static inline u32
nfsd4_setclientid_rsize(struct svc_rqst
*rqstp
, struct nfsd4_op
*op
)
2000 return (op_encode_hdr_size
+ 2 + XDR_QUADLEN(NFS4_VERIFIER_SIZE
)) *
2004 static inline u32
nfsd4_write_rsize(struct svc_rqst
*rqstp
, struct nfsd4_op
*op
)
2006 return (op_encode_hdr_size
+ 2 + op_encode_verifier_maxsz
) * sizeof(__be32
);
2009 static inline u32
nfsd4_exchange_id_rsize(struct svc_rqst
*rqstp
, struct nfsd4_op
*op
)
2011 return (op_encode_hdr_size
+ 2 + 1 + /* eir_clientid, eir_sequenceid */\
2012 1 + 1 + /* eir_flags, spr_how */\
2013 4 + /* spo_must_enforce & _allow with bitmap */\
2014 2 + /*eir_server_owner.so_minor_id */\
2015 /* eir_server_owner.so_major_id<> */\
2016 XDR_QUADLEN(NFS4_OPAQUE_LIMIT
) + 1 +\
2017 /* eir_server_scope<> */\
2018 XDR_QUADLEN(NFS4_OPAQUE_LIMIT
) + 1 +\
2019 1 + /* eir_server_impl_id array length */\
2020 0 /* ignored eir_server_impl_id contents */) * sizeof(__be32
);
2023 static inline u32
nfsd4_bind_conn_to_session_rsize(struct svc_rqst
*rqstp
, struct nfsd4_op
*op
)
2025 return (op_encode_hdr_size
+ \
2026 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN
) + /* bctsr_sessid */\
2027 2 /* bctsr_dir, use_conn_in_rdma_mode */) * sizeof(__be32
);
2030 static inline u32
nfsd4_create_session_rsize(struct svc_rqst
*rqstp
, struct nfsd4_op
*op
)
2032 return (op_encode_hdr_size
+ \
2033 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN
) + /* sessionid */\
2034 2 + /* csr_sequence, csr_flags */\
2035 op_encode_channel_attrs_maxsz
+ \
2036 op_encode_channel_attrs_maxsz
) * sizeof(__be32
);
2039 static inline u32
nfsd4_copy_rsize(struct svc_rqst
*rqstp
, struct nfsd4_op
*op
)
2041 return (op_encode_hdr_size
+
2042 1 /* wr_callback */ +
2043 op_encode_stateid_maxsz
/* wr_callback */ +
2045 1 /* wr_committed */ +
2046 op_encode_verifier_maxsz
+
2047 1 /* cr_consecutive */ +
2048 1 /* cr_synchronous */) * sizeof(__be32
);
2051 #ifdef CONFIG_NFSD_PNFS
2052 static inline u32
nfsd4_getdeviceinfo_rsize(struct svc_rqst
*rqstp
, struct nfsd4_op
*op
)
2054 u32 maxcount
= 0, rlen
= 0;
2056 maxcount
= svc_max_payload(rqstp
);
2057 rlen
= min(op
->u
.getdeviceinfo
.gd_maxcount
, maxcount
);
2059 return (op_encode_hdr_size
+
2060 1 /* gd_layout_type*/ +
2062 2 /* gd_notify_types */) * sizeof(__be32
);
2066 * At this stage we don't really know what layout driver will handle the request,
2067 * so we need to define an arbitrary upper bound here.
2069 #define MAX_LAYOUT_SIZE 128
2070 static inline u32
nfsd4_layoutget_rsize(struct svc_rqst
*rqstp
, struct nfsd4_op
*op
)
2072 return (op_encode_hdr_size
+
2073 1 /* logr_return_on_close */ +
2074 op_encode_stateid_maxsz
+
2075 1 /* nr of layouts */ +
2076 MAX_LAYOUT_SIZE
) * sizeof(__be32
);
2079 static inline u32
nfsd4_layoutcommit_rsize(struct svc_rqst
*rqstp
, struct nfsd4_op
*op
)
2081 return (op_encode_hdr_size
+
2082 1 /* locr_newsize */ +
2083 2 /* ns_size */) * sizeof(__be32
);
2086 static inline u32
nfsd4_layoutreturn_rsize(struct svc_rqst
*rqstp
, struct nfsd4_op
*op
)
2088 return (op_encode_hdr_size
+
2089 1 /* lrs_stateid */ +
2090 op_encode_stateid_maxsz
) * sizeof(__be32
);
2092 #endif /* CONFIG_NFSD_PNFS */
2095 static inline u32
nfsd4_seek_rsize(struct svc_rqst
*rqstp
, struct nfsd4_op
*op
)
2097 return (op_encode_hdr_size
+ 3) * sizeof(__be32
);
2100 static const struct nfsd4_operation nfsd4_ops
[] = {
2102 .op_func
= nfsd4_access
,
2103 .op_name
= "OP_ACCESS",
2104 .op_rsize_bop
= nfsd4_access_rsize
,
2107 .op_func
= nfsd4_close
,
2108 .op_flags
= OP_MODIFIES_SOMETHING
,
2109 .op_name
= "OP_CLOSE",
2110 .op_rsize_bop
= nfsd4_status_stateid_rsize
,
2111 .op_get_currentstateid
= nfsd4_get_closestateid
,
2112 .op_set_currentstateid
= nfsd4_set_closestateid
,
2115 .op_func
= nfsd4_commit
,
2116 .op_flags
= OP_MODIFIES_SOMETHING
,
2117 .op_name
= "OP_COMMIT",
2118 .op_rsize_bop
= nfsd4_commit_rsize
,
2121 .op_func
= nfsd4_create
,
2122 .op_flags
= OP_MODIFIES_SOMETHING
| OP_CACHEME
| OP_CLEAR_STATEID
,
2123 .op_name
= "OP_CREATE",
2124 .op_rsize_bop
= nfsd4_create_rsize
,
2126 [OP_DELEGRETURN
] = {
2127 .op_func
= nfsd4_delegreturn
,
2128 .op_flags
= OP_MODIFIES_SOMETHING
,
2129 .op_name
= "OP_DELEGRETURN",
2130 .op_rsize_bop
= nfsd4_only_status_rsize
,
2131 .op_get_currentstateid
= nfsd4_get_delegreturnstateid
,
2134 .op_func
= nfsd4_getattr
,
2135 .op_flags
= ALLOWED_ON_ABSENT_FS
,
2136 .op_rsize_bop
= nfsd4_getattr_rsize
,
2137 .op_name
= "OP_GETATTR",
2140 .op_func
= nfsd4_getfh
,
2141 .op_name
= "OP_GETFH",
2142 .op_rsize_bop
= nfsd4_getfh_rsize
,
2145 .op_func
= nfsd4_link
,
2146 .op_flags
= ALLOWED_ON_ABSENT_FS
| OP_MODIFIES_SOMETHING
2148 .op_name
= "OP_LINK",
2149 .op_rsize_bop
= nfsd4_link_rsize
,
2152 .op_func
= nfsd4_lock
,
2153 .op_flags
= OP_MODIFIES_SOMETHING
|
2154 OP_NONTRIVIAL_ERROR_ENCODE
,
2155 .op_name
= "OP_LOCK",
2156 .op_rsize_bop
= nfsd4_lock_rsize
,
2157 .op_set_currentstateid
= nfsd4_set_lockstateid
,
2160 .op_func
= nfsd4_lockt
,
2161 .op_flags
= OP_NONTRIVIAL_ERROR_ENCODE
,
2162 .op_name
= "OP_LOCKT",
2163 .op_rsize_bop
= nfsd4_lock_rsize
,
2166 .op_func
= nfsd4_locku
,
2167 .op_flags
= OP_MODIFIES_SOMETHING
,
2168 .op_name
= "OP_LOCKU",
2169 .op_rsize_bop
= nfsd4_status_stateid_rsize
,
2170 .op_get_currentstateid
= nfsd4_get_lockustateid
,
2173 .op_func
= nfsd4_lookup
,
2174 .op_flags
= OP_HANDLES_WRONGSEC
| OP_CLEAR_STATEID
,
2175 .op_name
= "OP_LOOKUP",
2176 .op_rsize_bop
= nfsd4_only_status_rsize
,
2179 .op_func
= nfsd4_lookupp
,
2180 .op_flags
= OP_HANDLES_WRONGSEC
| OP_CLEAR_STATEID
,
2181 .op_name
= "OP_LOOKUPP",
2182 .op_rsize_bop
= nfsd4_only_status_rsize
,
2185 .op_func
= nfsd4_nverify
,
2186 .op_name
= "OP_NVERIFY",
2187 .op_rsize_bop
= nfsd4_only_status_rsize
,
2190 .op_func
= nfsd4_open
,
2191 .op_flags
= OP_HANDLES_WRONGSEC
| OP_MODIFIES_SOMETHING
,
2192 .op_name
= "OP_OPEN",
2193 .op_rsize_bop
= nfsd4_open_rsize
,
2194 .op_set_currentstateid
= nfsd4_set_openstateid
,
2196 [OP_OPEN_CONFIRM
] = {
2197 .op_func
= nfsd4_open_confirm
,
2198 .op_flags
= OP_MODIFIES_SOMETHING
,
2199 .op_name
= "OP_OPEN_CONFIRM",
2200 .op_rsize_bop
= nfsd4_status_stateid_rsize
,
2202 [OP_OPEN_DOWNGRADE
] = {
2203 .op_func
= nfsd4_open_downgrade
,
2204 .op_flags
= OP_MODIFIES_SOMETHING
,
2205 .op_name
= "OP_OPEN_DOWNGRADE",
2206 .op_rsize_bop
= nfsd4_status_stateid_rsize
,
2207 .op_get_currentstateid
= nfsd4_get_opendowngradestateid
,
2208 .op_set_currentstateid
= nfsd4_set_opendowngradestateid
,
2211 .op_func
= nfsd4_putfh
,
2212 .op_flags
= ALLOWED_WITHOUT_FH
| ALLOWED_ON_ABSENT_FS
2213 | OP_IS_PUTFH_LIKE
| OP_CLEAR_STATEID
,
2214 .op_name
= "OP_PUTFH",
2215 .op_rsize_bop
= nfsd4_only_status_rsize
,
2218 .op_func
= nfsd4_putrootfh
,
2219 .op_flags
= ALLOWED_WITHOUT_FH
| ALLOWED_ON_ABSENT_FS
2220 | OP_IS_PUTFH_LIKE
| OP_CLEAR_STATEID
,
2221 .op_name
= "OP_PUTPUBFH",
2222 .op_rsize_bop
= nfsd4_only_status_rsize
,
2225 .op_func
= nfsd4_putrootfh
,
2226 .op_flags
= ALLOWED_WITHOUT_FH
| ALLOWED_ON_ABSENT_FS
2227 | OP_IS_PUTFH_LIKE
| OP_CLEAR_STATEID
,
2228 .op_name
= "OP_PUTROOTFH",
2229 .op_rsize_bop
= nfsd4_only_status_rsize
,
2232 .op_func
= nfsd4_read
,
2233 .op_release
= nfsd4_read_release
,
2234 .op_name
= "OP_READ",
2235 .op_rsize_bop
= nfsd4_read_rsize
,
2236 .op_get_currentstateid
= nfsd4_get_readstateid
,
2239 .op_func
= nfsd4_readdir
,
2240 .op_name
= "OP_READDIR",
2241 .op_rsize_bop
= nfsd4_readdir_rsize
,
2244 .op_func
= nfsd4_readlink
,
2245 .op_name
= "OP_READLINK",
2246 .op_rsize_bop
= nfsd4_readlink_rsize
,
2249 .op_func
= nfsd4_remove
,
2250 .op_flags
= OP_MODIFIES_SOMETHING
| OP_CACHEME
,
2251 .op_name
= "OP_REMOVE",
2252 .op_rsize_bop
= nfsd4_remove_rsize
,
2255 .op_func
= nfsd4_rename
,
2256 .op_flags
= OP_MODIFIES_SOMETHING
| OP_CACHEME
,
2257 .op_name
= "OP_RENAME",
2258 .op_rsize_bop
= nfsd4_rename_rsize
,
2261 .op_func
= nfsd4_renew
,
2262 .op_flags
= ALLOWED_WITHOUT_FH
| ALLOWED_ON_ABSENT_FS
2263 | OP_MODIFIES_SOMETHING
,
2264 .op_name
= "OP_RENEW",
2265 .op_rsize_bop
= nfsd4_only_status_rsize
,
2269 .op_func
= nfsd4_restorefh
,
2270 .op_flags
= ALLOWED_WITHOUT_FH
| ALLOWED_ON_ABSENT_FS
2271 | OP_IS_PUTFH_LIKE
| OP_MODIFIES_SOMETHING
,
2272 .op_name
= "OP_RESTOREFH",
2273 .op_rsize_bop
= nfsd4_only_status_rsize
,
2276 .op_func
= nfsd4_savefh
,
2277 .op_flags
= OP_HANDLES_WRONGSEC
| OP_MODIFIES_SOMETHING
,
2278 .op_name
= "OP_SAVEFH",
2279 .op_rsize_bop
= nfsd4_only_status_rsize
,
2282 .op_func
= nfsd4_secinfo
,
2283 .op_release
= nfsd4_secinfo_release
,
2284 .op_flags
= OP_HANDLES_WRONGSEC
,
2285 .op_name
= "OP_SECINFO",
2286 .op_rsize_bop
= nfsd4_secinfo_rsize
,
2289 .op_func
= nfsd4_setattr
,
2290 .op_name
= "OP_SETATTR",
2291 .op_flags
= OP_MODIFIES_SOMETHING
| OP_CACHEME
2292 | OP_NONTRIVIAL_ERROR_ENCODE
,
2293 .op_rsize_bop
= nfsd4_setattr_rsize
,
2294 .op_get_currentstateid
= nfsd4_get_setattrstateid
,
2296 [OP_SETCLIENTID
] = {
2297 .op_func
= nfsd4_setclientid
,
2298 .op_flags
= ALLOWED_WITHOUT_FH
| ALLOWED_ON_ABSENT_FS
2299 | OP_MODIFIES_SOMETHING
| OP_CACHEME
2300 | OP_NONTRIVIAL_ERROR_ENCODE
,
2301 .op_name
= "OP_SETCLIENTID",
2302 .op_rsize_bop
= nfsd4_setclientid_rsize
,
2304 [OP_SETCLIENTID_CONFIRM
] = {
2305 .op_func
= nfsd4_setclientid_confirm
,
2306 .op_flags
= ALLOWED_WITHOUT_FH
| ALLOWED_ON_ABSENT_FS
2307 | OP_MODIFIES_SOMETHING
| OP_CACHEME
,
2308 .op_name
= "OP_SETCLIENTID_CONFIRM",
2309 .op_rsize_bop
= nfsd4_only_status_rsize
,
2312 .op_func
= nfsd4_verify
,
2313 .op_name
= "OP_VERIFY",
2314 .op_rsize_bop
= nfsd4_only_status_rsize
,
2317 .op_func
= nfsd4_write
,
2318 .op_flags
= OP_MODIFIES_SOMETHING
| OP_CACHEME
,
2319 .op_name
= "OP_WRITE",
2320 .op_rsize_bop
= nfsd4_write_rsize
,
2321 .op_get_currentstateid
= nfsd4_get_writestateid
,
2323 [OP_RELEASE_LOCKOWNER
] = {
2324 .op_func
= nfsd4_release_lockowner
,
2325 .op_flags
= ALLOWED_WITHOUT_FH
| ALLOWED_ON_ABSENT_FS
2326 | OP_MODIFIES_SOMETHING
,
2327 .op_name
= "OP_RELEASE_LOCKOWNER",
2328 .op_rsize_bop
= nfsd4_only_status_rsize
,
2331 /* NFSv4.1 operations */
2332 [OP_EXCHANGE_ID
] = {
2333 .op_func
= nfsd4_exchange_id
,
2334 .op_flags
= ALLOWED_WITHOUT_FH
| ALLOWED_AS_FIRST_OP
2335 | OP_MODIFIES_SOMETHING
,
2336 .op_name
= "OP_EXCHANGE_ID",
2337 .op_rsize_bop
= nfsd4_exchange_id_rsize
,
2339 [OP_BACKCHANNEL_CTL
] = {
2340 .op_func
= nfsd4_backchannel_ctl
,
2341 .op_flags
= ALLOWED_WITHOUT_FH
| OP_MODIFIES_SOMETHING
,
2342 .op_name
= "OP_BACKCHANNEL_CTL",
2343 .op_rsize_bop
= nfsd4_only_status_rsize
,
2345 [OP_BIND_CONN_TO_SESSION
] = {
2346 .op_func
= nfsd4_bind_conn_to_session
,
2347 .op_flags
= ALLOWED_WITHOUT_FH
| ALLOWED_AS_FIRST_OP
2348 | OP_MODIFIES_SOMETHING
,
2349 .op_name
= "OP_BIND_CONN_TO_SESSION",
2350 .op_rsize_bop
= nfsd4_bind_conn_to_session_rsize
,
2352 [OP_CREATE_SESSION
] = {
2353 .op_func
= nfsd4_create_session
,
2354 .op_flags
= ALLOWED_WITHOUT_FH
| ALLOWED_AS_FIRST_OP
2355 | OP_MODIFIES_SOMETHING
,
2356 .op_name
= "OP_CREATE_SESSION",
2357 .op_rsize_bop
= nfsd4_create_session_rsize
,
2359 [OP_DESTROY_SESSION
] = {
2360 .op_func
= nfsd4_destroy_session
,
2361 .op_flags
= ALLOWED_WITHOUT_FH
| ALLOWED_AS_FIRST_OP
2362 | OP_MODIFIES_SOMETHING
,
2363 .op_name
= "OP_DESTROY_SESSION",
2364 .op_rsize_bop
= nfsd4_only_status_rsize
,
2367 .op_func
= nfsd4_sequence
,
2368 .op_flags
= ALLOWED_WITHOUT_FH
| ALLOWED_AS_FIRST_OP
,
2369 .op_name
= "OP_SEQUENCE",
2370 .op_rsize_bop
= nfsd4_sequence_rsize
,
2372 [OP_DESTROY_CLIENTID
] = {
2373 .op_func
= nfsd4_destroy_clientid
,
2374 .op_flags
= ALLOWED_WITHOUT_FH
| ALLOWED_AS_FIRST_OP
2375 | OP_MODIFIES_SOMETHING
,
2376 .op_name
= "OP_DESTROY_CLIENTID",
2377 .op_rsize_bop
= nfsd4_only_status_rsize
,
2379 [OP_RECLAIM_COMPLETE
] = {
2380 .op_func
= nfsd4_reclaim_complete
,
2381 .op_flags
= ALLOWED_WITHOUT_FH
| OP_MODIFIES_SOMETHING
,
2382 .op_name
= "OP_RECLAIM_COMPLETE",
2383 .op_rsize_bop
= nfsd4_only_status_rsize
,
2385 [OP_SECINFO_NO_NAME
] = {
2386 .op_func
= nfsd4_secinfo_no_name
,
2387 .op_release
= nfsd4_secinfo_no_name_release
,
2388 .op_flags
= OP_HANDLES_WRONGSEC
,
2389 .op_name
= "OP_SECINFO_NO_NAME",
2390 .op_rsize_bop
= nfsd4_secinfo_rsize
,
2392 [OP_TEST_STATEID
] = {
2393 .op_func
= nfsd4_test_stateid
,
2394 .op_flags
= ALLOWED_WITHOUT_FH
,
2395 .op_name
= "OP_TEST_STATEID",
2396 .op_rsize_bop
= nfsd4_test_stateid_rsize
,
2398 [OP_FREE_STATEID
] = {
2399 .op_func
= nfsd4_free_stateid
,
2400 .op_flags
= ALLOWED_WITHOUT_FH
| OP_MODIFIES_SOMETHING
,
2401 .op_name
= "OP_FREE_STATEID",
2402 .op_get_currentstateid
= nfsd4_get_freestateid
,
2403 .op_rsize_bop
= nfsd4_only_status_rsize
,
2405 #ifdef CONFIG_NFSD_PNFS
2406 [OP_GETDEVICEINFO
] = {
2407 .op_func
= nfsd4_getdeviceinfo
,
2408 .op_release
= nfsd4_getdeviceinfo_release
,
2409 .op_flags
= ALLOWED_WITHOUT_FH
,
2410 .op_name
= "OP_GETDEVICEINFO",
2411 .op_rsize_bop
= nfsd4_getdeviceinfo_rsize
,
2414 .op_func
= nfsd4_layoutget
,
2415 .op_release
= nfsd4_layoutget_release
,
2416 .op_flags
= OP_MODIFIES_SOMETHING
,
2417 .op_name
= "OP_LAYOUTGET",
2418 .op_rsize_bop
= nfsd4_layoutget_rsize
,
2420 [OP_LAYOUTCOMMIT
] = {
2421 .op_func
= nfsd4_layoutcommit
,
2422 .op_flags
= OP_MODIFIES_SOMETHING
,
2423 .op_name
= "OP_LAYOUTCOMMIT",
2424 .op_rsize_bop
= nfsd4_layoutcommit_rsize
,
2426 [OP_LAYOUTRETURN
] = {
2427 .op_func
= nfsd4_layoutreturn
,
2428 .op_flags
= OP_MODIFIES_SOMETHING
,
2429 .op_name
= "OP_LAYOUTRETURN",
2430 .op_rsize_bop
= nfsd4_layoutreturn_rsize
,
2432 #endif /* CONFIG_NFSD_PNFS */
2434 /* NFSv4.2 operations */
2436 .op_func
= nfsd4_allocate
,
2437 .op_flags
= OP_MODIFIES_SOMETHING
| OP_CACHEME
,
2438 .op_name
= "OP_ALLOCATE",
2439 .op_rsize_bop
= nfsd4_only_status_rsize
,
2442 .op_func
= nfsd4_deallocate
,
2443 .op_flags
= OP_MODIFIES_SOMETHING
| OP_CACHEME
,
2444 .op_name
= "OP_DEALLOCATE",
2445 .op_rsize_bop
= nfsd4_only_status_rsize
,
2448 .op_func
= nfsd4_clone
,
2449 .op_flags
= OP_MODIFIES_SOMETHING
| OP_CACHEME
,
2450 .op_name
= "OP_CLONE",
2451 .op_rsize_bop
= nfsd4_only_status_rsize
,
2454 .op_func
= nfsd4_copy
,
2455 .op_flags
= OP_MODIFIES_SOMETHING
| OP_CACHEME
,
2456 .op_name
= "OP_COPY",
2457 .op_rsize_bop
= nfsd4_copy_rsize
,
2460 .op_func
= nfsd4_seek
,
2461 .op_name
= "OP_SEEK",
2462 .op_rsize_bop
= nfsd4_seek_rsize
,
2467 * nfsd4_spo_must_allow - Determine if the compound op contains an
2468 * operation that is allowed to be sent with machine credentials
2470 * @rqstp: a pointer to the struct svc_rqst
2472 * Checks to see if the compound contains a spo_must_allow op
2473 * and confirms that it was sent with the proper machine creds.
2476 bool nfsd4_spo_must_allow(struct svc_rqst
*rqstp
)
2478 struct nfsd4_compoundres
*resp
= rqstp
->rq_resp
;
2479 struct nfsd4_compoundargs
*argp
= rqstp
->rq_argp
;
2480 struct nfsd4_op
*this = &argp
->ops
[resp
->opcnt
- 1];
2481 struct nfsd4_compound_state
*cstate
= &resp
->cstate
;
2482 struct nfs4_op_map
*allow
= &cstate
->clp
->cl_spo_must_allow
;
2485 if (!cstate
->minorversion
)
2488 if (cstate
->spo_must_allowed
== true)
2491 opiter
= resp
->opcnt
;
2492 while (opiter
< argp
->opcnt
) {
2493 this = &argp
->ops
[opiter
++];
2494 if (test_bit(this->opnum
, allow
->u
.longs
) &&
2495 cstate
->clp
->cl_mach_cred
&&
2496 nfsd4_mach_creds_match(cstate
->clp
, rqstp
)) {
2497 cstate
->spo_must_allowed
= true;
2501 cstate
->spo_must_allowed
= false;
2505 int nfsd4_max_reply(struct svc_rqst
*rqstp
, struct nfsd4_op
*op
)
2507 if (op
->opnum
== OP_ILLEGAL
|| op
->status
== nfserr_notsupp
)
2508 return op_encode_hdr_size
* sizeof(__be32
);
2510 BUG_ON(OPDESC(op
)->op_rsize_bop
== NULL
);
2511 return OPDESC(op
)->op_rsize_bop(rqstp
, op
);
2514 void warn_on_nonidempotent_op(struct nfsd4_op
*op
)
2516 if (OPDESC(op
)->op_flags
& OP_MODIFIES_SOMETHING
) {
2517 pr_err("unable to encode reply to nonidempotent op %d (%s)\n",
2518 op
->opnum
, nfsd4_op_name(op
->opnum
));
2523 static const char *nfsd4_op_name(unsigned opnum
)
2525 if (opnum
< ARRAY_SIZE(nfsd4_ops
))
2526 return nfsd4_ops
[opnum
].op_name
;
2527 return "unknown_operation";
2530 #define nfsd4_voidres nfsd4_voidargs
2531 struct nfsd4_voidargs
{ int dummy
; };
2533 static const struct svc_procedure nfsd_procedures4
[2] = {
2535 .pc_func
= nfsd4_proc_null
,
2536 .pc_encode
= nfs4svc_encode_voidres
,
2537 .pc_argsize
= sizeof(struct nfsd4_voidargs
),
2538 .pc_ressize
= sizeof(struct nfsd4_voidres
),
2539 .pc_cachetype
= RC_NOCACHE
,
2542 [NFSPROC4_COMPOUND
] = {
2543 .pc_func
= nfsd4_proc_compound
,
2544 .pc_decode
= nfs4svc_decode_compoundargs
,
2545 .pc_encode
= nfs4svc_encode_compoundres
,
2546 .pc_argsize
= sizeof(struct nfsd4_compoundargs
),
2547 .pc_ressize
= sizeof(struct nfsd4_compoundres
),
2548 .pc_release
= nfsd4_release_compoundargs
,
2549 .pc_cachetype
= RC_NOCACHE
,
2550 .pc_xdrressize
= NFSD_BUFSIZE
/4,
2554 static unsigned int nfsd_count3
[ARRAY_SIZE(nfsd_procedures4
)];
2555 const struct svc_version nfsd_version4
= {
2558 .vs_proc
= nfsd_procedures4
,
2559 .vs_count
= nfsd_count3
,
2560 .vs_dispatch
= nfsd_dispatch
,
2561 .vs_xdrsize
= NFS4_SVC_XDRSIZE
,
2562 .vs_rpcb_optnl
= true,
2563 .vs_need_cong_ctrl
= true,