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/file.h>
36 #include <linux/falloc.h>
37 #include <linux/slab.h>
43 #include "current_stateid.h"
49 #ifdef CONFIG_NFSD_V4_SECURITY_LABEL
50 #include <linux/security.h>
53 nfsd4_security_inode_setsecctx(struct svc_fh
*resfh
, struct xdr_netobj
*label
, u32
*bmval
)
55 struct inode
*inode
= d_inode(resfh
->fh_dentry
);
59 status
= security_inode_setsecctx(resfh
->fh_dentry
,
60 label
->data
, label
->len
);
65 * XXX: We should really fail the whole open, but we may
66 * already have created a new file, so it may be too
67 * late. For now this seems the least of evils:
69 bmval
[2] &= ~FATTR4_WORD2_SECURITY_LABEL
;
75 nfsd4_security_inode_setsecctx(struct svc_fh
*resfh
, struct xdr_netobj
*label
, u32
*bmval
)
79 #define NFSDDBG_FACILITY NFSDDBG_PROC
81 static u32 nfsd_attrmask
[] = {
82 NFSD_WRITEABLE_ATTRS_WORD0
,
83 NFSD_WRITEABLE_ATTRS_WORD1
,
84 NFSD_WRITEABLE_ATTRS_WORD2
87 static u32 nfsd41_ex_attrmask
[] = {
88 NFSD_SUPPATTR_EXCLCREAT_WORD0
,
89 NFSD_SUPPATTR_EXCLCREAT_WORD1
,
90 NFSD_SUPPATTR_EXCLCREAT_WORD2
94 check_attr_support(struct svc_rqst
*rqstp
, struct nfsd4_compound_state
*cstate
,
95 u32
*bmval
, u32
*writable
)
97 struct dentry
*dentry
= cstate
->current_fh
.fh_dentry
;
98 struct svc_export
*exp
= cstate
->current_fh
.fh_export
;
100 if (!nfsd_attrs_supported(cstate
->minorversion
, bmval
))
101 return nfserr_attrnotsupp
;
102 if ((bmval
[0] & FATTR4_WORD0_ACL
) && !IS_POSIXACL(d_inode(dentry
)))
103 return nfserr_attrnotsupp
;
104 if ((bmval
[2] & FATTR4_WORD2_SECURITY_LABEL
) &&
105 !(exp
->ex_flags
& NFSEXP_SECURITY_LABEL
))
106 return nfserr_attrnotsupp
;
107 if (writable
&& !bmval_is_subset(bmval
, writable
))
109 if (writable
&& (bmval
[2] & FATTR4_WORD2_MODE_UMASK
) &&
110 (bmval
[1] & FATTR4_WORD1_MODE
))
116 nfsd4_check_open_attributes(struct svc_rqst
*rqstp
,
117 struct nfsd4_compound_state
*cstate
, struct nfsd4_open
*open
)
119 __be32 status
= nfs_ok
;
121 if (open
->op_create
== NFS4_OPEN_CREATE
) {
122 if (open
->op_createmode
== NFS4_CREATE_UNCHECKED
123 || open
->op_createmode
== NFS4_CREATE_GUARDED
)
124 status
= check_attr_support(rqstp
, cstate
,
125 open
->op_bmval
, nfsd_attrmask
);
126 else if (open
->op_createmode
== NFS4_CREATE_EXCLUSIVE4_1
)
127 status
= check_attr_support(rqstp
, cstate
,
128 open
->op_bmval
, nfsd41_ex_attrmask
);
135 is_create_with_attrs(struct nfsd4_open
*open
)
137 return open
->op_create
== NFS4_OPEN_CREATE
138 && (open
->op_createmode
== NFS4_CREATE_UNCHECKED
139 || open
->op_createmode
== NFS4_CREATE_GUARDED
140 || open
->op_createmode
== NFS4_CREATE_EXCLUSIVE4_1
);
144 * if error occurs when setting the acl, just clear the acl bit
145 * in the returned attr bitmap.
148 do_set_nfs4_acl(struct svc_rqst
*rqstp
, struct svc_fh
*fhp
,
149 struct nfs4_acl
*acl
, u32
*bmval
)
153 status
= nfsd4_set_nfs4_acl(rqstp
, fhp
, acl
);
156 * We should probably fail the whole open at this point,
157 * but we've already created the file, so it's too late;
158 * So this seems the least of evils:
160 bmval
[0] &= ~FATTR4_WORD0_ACL
;
164 fh_dup2(struct svc_fh
*dst
, struct svc_fh
*src
)
167 dget(src
->fh_dentry
);
169 exp_get(src
->fh_export
);
174 do_open_permission(struct svc_rqst
*rqstp
, struct svc_fh
*current_fh
, struct nfsd4_open
*open
, int accmode
)
178 if (open
->op_truncate
&&
179 !(open
->op_share_access
& NFS4_SHARE_ACCESS_WRITE
))
182 accmode
|= NFSD_MAY_READ_IF_EXEC
;
184 if (open
->op_share_access
& NFS4_SHARE_ACCESS_READ
)
185 accmode
|= NFSD_MAY_READ
;
186 if (open
->op_share_access
& NFS4_SHARE_ACCESS_WRITE
)
187 accmode
|= (NFSD_MAY_WRITE
| NFSD_MAY_TRUNC
);
188 if (open
->op_share_deny
& NFS4_SHARE_DENY_READ
)
189 accmode
|= NFSD_MAY_WRITE
;
191 status
= fh_verify(rqstp
, current_fh
, S_IFREG
, accmode
);
196 static __be32
nfsd_check_obj_isreg(struct svc_fh
*fh
)
198 umode_t mode
= d_inode(fh
->fh_dentry
)->i_mode
;
205 * Using err_symlink as our catch-all case may look odd; but
206 * there's no other obvious error for this case in 4.0, and we
207 * happen to know that it will cause the linux v4 client to do
208 * the right thing on attempts to open something other than a
211 return nfserr_symlink
;
214 static void nfsd4_set_open_owner_reply_cache(struct nfsd4_compound_state
*cstate
, struct nfsd4_open
*open
, struct svc_fh
*resfh
)
216 if (nfsd4_has_session(cstate
))
218 fh_copy_shallow(&open
->op_openowner
->oo_owner
.so_replay
.rp_openfh
,
223 do_open_lookup(struct svc_rqst
*rqstp
, struct nfsd4_compound_state
*cstate
, struct nfsd4_open
*open
, struct svc_fh
**resfh
)
225 struct svc_fh
*current_fh
= &cstate
->current_fh
;
229 *resfh
= kmalloc(sizeof(struct svc_fh
), GFP_KERNEL
);
231 return nfserr_jukebox
;
232 fh_init(*resfh
, NFS4_FHSIZE
);
233 open
->op_truncate
= 0;
235 if (open
->op_create
) {
236 /* FIXME: check session persistence and pnfs flags.
237 * The nfsv4.1 spec requires the following semantics:
239 * Persistent | pNFS | Server REQUIRED | Client Allowed
240 * Reply Cache | server | |
241 * -------------+--------+-----------------+--------------------
242 * no | no | EXCLUSIVE4_1 | EXCLUSIVE4_1
244 * | | and EXCLUSIVE4 | or EXCLUSIVE4
246 * no | yes | EXCLUSIVE4_1 | EXCLUSIVE4_1
247 * yes | no | GUARDED4 | GUARDED4
248 * yes | yes | GUARDED4 | GUARDED4
252 * Note: create modes (UNCHECKED,GUARDED...) are the same
253 * in NFSv4 as in v3 except EXCLUSIVE4_1.
255 status
= do_nfsd_create(rqstp
, current_fh
, open
->op_fname
.data
,
256 open
->op_fname
.len
, &open
->op_iattr
,
257 *resfh
, open
->op_createmode
,
258 (u32
*)open
->op_verf
.data
,
259 &open
->op_truncate
, &open
->op_created
);
261 if (!status
&& open
->op_label
.len
)
262 nfsd4_security_inode_setsecctx(*resfh
, &open
->op_label
, open
->op_bmval
);
265 * Following rfc 3530 14.2.16, and rfc 5661 18.16.4
266 * use the returned bitmask to indicate which attributes
267 * we used to store the verifier:
269 if (nfsd_create_is_exclusive(open
->op_createmode
) && status
== 0)
270 open
->op_bmval
[1] |= (FATTR4_WORD1_TIME_ACCESS
|
271 FATTR4_WORD1_TIME_MODIFY
);
274 * Note this may exit with the parent still locked.
275 * We will hold the lock until nfsd4_open's final
276 * lookup, to prevent renames or unlinks until we've had
277 * a chance to an acquire a delegation if appropriate.
279 status
= nfsd_lookup(rqstp
, current_fh
,
280 open
->op_fname
.data
, open
->op_fname
.len
, *resfh
);
283 status
= nfsd_check_obj_isreg(*resfh
);
287 if (is_create_with_attrs(open
) && open
->op_acl
!= NULL
)
288 do_set_nfs4_acl(rqstp
, *resfh
, open
->op_acl
, open
->op_bmval
);
290 nfsd4_set_open_owner_reply_cache(cstate
, open
, *resfh
);
291 accmode
= NFSD_MAY_NOP
;
292 if (open
->op_created
||
293 open
->op_claim_type
== NFS4_OPEN_CLAIM_DELEGATE_CUR
)
294 accmode
|= NFSD_MAY_OWNER_OVERRIDE
;
295 status
= do_open_permission(rqstp
, *resfh
, open
, accmode
);
296 set_change_info(&open
->op_cinfo
, current_fh
);
302 do_open_fhandle(struct svc_rqst
*rqstp
, struct nfsd4_compound_state
*cstate
, struct nfsd4_open
*open
)
304 struct svc_fh
*current_fh
= &cstate
->current_fh
;
308 /* We don't know the target directory, and therefore can not
309 * set the change info
312 memset(&open
->op_cinfo
, 0, sizeof(struct nfsd4_change_info
));
314 nfsd4_set_open_owner_reply_cache(cstate
, open
, current_fh
);
316 open
->op_truncate
= (open
->op_iattr
.ia_valid
& ATTR_SIZE
) &&
317 (open
->op_iattr
.ia_size
== 0);
319 * In the delegation case, the client is telling us about an
320 * open that it *already* performed locally, some time ago. We
321 * should let it succeed now if possible.
323 * In the case of a CLAIM_FH open, on the other hand, the client
324 * may be counting on us to enforce permissions (the Linux 4.1
325 * client uses this for normal opens, for example).
327 if (open
->op_claim_type
== NFS4_OPEN_CLAIM_DELEG_CUR_FH
)
328 accmode
= NFSD_MAY_OWNER_OVERRIDE
;
330 status
= do_open_permission(rqstp
, current_fh
, open
, accmode
);
336 copy_clientid(clientid_t
*clid
, struct nfsd4_session
*session
)
338 struct nfsd4_sessionid
*sid
=
339 (struct nfsd4_sessionid
*)session
->se_sessionid
.data
;
341 clid
->cl_boot
= sid
->clientid
.cl_boot
;
342 clid
->cl_id
= sid
->clientid
.cl_id
;
346 nfsd4_open(struct svc_rqst
*rqstp
, struct nfsd4_compound_state
*cstate
,
347 struct nfsd4_open
*open
)
350 struct svc_fh
*resfh
= NULL
;
351 struct net
*net
= SVC_NET(rqstp
);
352 struct nfsd_net
*nn
= net_generic(net
, nfsd_net_id
);
354 dprintk("NFSD: nfsd4_open filename %.*s op_openowner %p\n",
355 (int)open
->op_fname
.len
, open
->op_fname
.data
,
358 /* This check required by spec. */
359 if (open
->op_create
&& open
->op_claim_type
!= NFS4_OPEN_CLAIM_NULL
)
362 open
->op_created
= 0;
365 * Before RECLAIM_COMPLETE done, server should deny new lock
367 if (nfsd4_has_session(cstate
) &&
368 !test_bit(NFSD4_CLIENT_RECLAIM_COMPLETE
,
369 &cstate
->session
->se_client
->cl_flags
) &&
370 open
->op_claim_type
!= NFS4_OPEN_CLAIM_PREVIOUS
)
373 if (nfsd4_has_session(cstate
))
374 copy_clientid(&open
->op_clientid
, cstate
->session
);
376 /* check seqid for replay. set nfs4_owner */
377 status
= nfsd4_process_open1(cstate
, open
, nn
);
378 if (status
== nfserr_replay_me
) {
379 struct nfs4_replay
*rp
= &open
->op_openowner
->oo_owner
.so_replay
;
380 fh_put(&cstate
->current_fh
);
381 fh_copy_shallow(&cstate
->current_fh
.fh_handle
,
383 status
= fh_verify(rqstp
, &cstate
->current_fh
, 0, NFSD_MAY_NOP
);
385 dprintk("nfsd4_open: replay failed"
386 " restoring previous filehandle\n");
388 status
= nfserr_replay_me
;
392 if (open
->op_xdr_error
) {
393 status
= open
->op_xdr_error
;
397 status
= nfsd4_check_open_attributes(rqstp
, cstate
, open
);
401 /* Openowner is now set, so sequence id will get bumped. Now we need
402 * these checks before we do any creates: */
403 status
= nfserr_grace
;
404 if (opens_in_grace(net
) && open
->op_claim_type
!= NFS4_OPEN_CLAIM_PREVIOUS
)
406 status
= nfserr_no_grace
;
407 if (!opens_in_grace(net
) && open
->op_claim_type
== NFS4_OPEN_CLAIM_PREVIOUS
)
410 switch (open
->op_claim_type
) {
411 case NFS4_OPEN_CLAIM_DELEGATE_CUR
:
412 case NFS4_OPEN_CLAIM_NULL
:
413 status
= do_open_lookup(rqstp
, cstate
, open
, &resfh
);
417 case NFS4_OPEN_CLAIM_PREVIOUS
:
418 status
= nfs4_check_open_reclaim(&open
->op_clientid
,
422 open
->op_openowner
->oo_flags
|= NFS4_OO_CONFIRMED
;
423 case NFS4_OPEN_CLAIM_FH
:
424 case NFS4_OPEN_CLAIM_DELEG_CUR_FH
:
425 status
= do_open_fhandle(rqstp
, cstate
, open
);
428 resfh
= &cstate
->current_fh
;
430 case NFS4_OPEN_CLAIM_DELEG_PREV_FH
:
431 case NFS4_OPEN_CLAIM_DELEGATE_PREV
:
432 dprintk("NFSD: unsupported OPEN claim type %d\n",
433 open
->op_claim_type
);
434 status
= nfserr_notsupp
;
437 dprintk("NFSD: Invalid OPEN claim type %d\n",
438 open
->op_claim_type
);
439 status
= nfserr_inval
;
443 * nfsd4_process_open2() does the actual opening of the file. If
444 * successful, it (1) truncates the file if open->op_truncate was
445 * set, (2) sets open->op_stateid, (3) sets open->op_delegation.
447 status
= nfsd4_process_open2(rqstp
, resfh
, open
);
448 WARN(status
&& open
->op_created
,
449 "nfsd4_process_open2 failed to open newly-created file! status=%u\n",
450 be32_to_cpu(status
));
452 if (resfh
&& resfh
!= &cstate
->current_fh
) {
453 fh_dup2(&cstate
->current_fh
, resfh
);
457 nfsd4_cleanup_open_state(cstate
, open
);
458 nfsd4_bump_seqid(cstate
, status
);
463 * OPEN is the only seqid-mutating operation whose decoding can fail
464 * with a seqid-mutating error (specifically, decoding of user names in
465 * the attributes). Therefore we have to do some processing to look up
466 * the stateowner so that we can bump the seqid.
468 static __be32
nfsd4_open_omfg(struct svc_rqst
*rqstp
, struct nfsd4_compound_state
*cstate
, struct nfsd4_op
*op
)
470 struct nfsd4_open
*open
= (struct nfsd4_open
*)&op
->u
;
472 if (!seqid_mutating_err(ntohl(op
->status
)))
474 if (nfsd4_has_session(cstate
))
476 open
->op_xdr_error
= op
->status
;
477 return nfsd4_open(rqstp
, cstate
, open
);
481 * filehandle-manipulating ops.
484 nfsd4_getfh(struct svc_rqst
*rqstp
, struct nfsd4_compound_state
*cstate
,
485 struct svc_fh
**getfh
)
487 if (!cstate
->current_fh
.fh_dentry
)
488 return nfserr_nofilehandle
;
490 *getfh
= &cstate
->current_fh
;
495 nfsd4_putfh(struct svc_rqst
*rqstp
, struct nfsd4_compound_state
*cstate
,
496 struct nfsd4_putfh
*putfh
)
498 fh_put(&cstate
->current_fh
);
499 cstate
->current_fh
.fh_handle
.fh_size
= putfh
->pf_fhlen
;
500 memcpy(&cstate
->current_fh
.fh_handle
.fh_base
, putfh
->pf_fhval
,
502 return fh_verify(rqstp
, &cstate
->current_fh
, 0, NFSD_MAY_BYPASS_GSS
);
506 nfsd4_putrootfh(struct svc_rqst
*rqstp
, struct nfsd4_compound_state
*cstate
,
511 fh_put(&cstate
->current_fh
);
512 status
= exp_pseudoroot(rqstp
, &cstate
->current_fh
);
517 nfsd4_restorefh(struct svc_rqst
*rqstp
, struct nfsd4_compound_state
*cstate
,
520 if (!cstate
->save_fh
.fh_dentry
)
521 return nfserr_restorefh
;
523 fh_dup2(&cstate
->current_fh
, &cstate
->save_fh
);
524 if (HAS_STATE_ID(cstate
, SAVED_STATE_ID_FLAG
)) {
525 memcpy(&cstate
->current_stateid
, &cstate
->save_stateid
, sizeof(stateid_t
));
526 SET_STATE_ID(cstate
, CURRENT_STATE_ID_FLAG
);
532 nfsd4_savefh(struct svc_rqst
*rqstp
, struct nfsd4_compound_state
*cstate
,
535 if (!cstate
->current_fh
.fh_dentry
)
536 return nfserr_nofilehandle
;
538 fh_dup2(&cstate
->save_fh
, &cstate
->current_fh
);
539 if (HAS_STATE_ID(cstate
, CURRENT_STATE_ID_FLAG
)) {
540 memcpy(&cstate
->save_stateid
, &cstate
->current_stateid
, sizeof(stateid_t
));
541 SET_STATE_ID(cstate
, SAVED_STATE_ID_FLAG
);
550 nfsd4_access(struct svc_rqst
*rqstp
, struct nfsd4_compound_state
*cstate
,
551 struct nfsd4_access
*access
)
553 if (access
->ac_req_access
& ~NFS3_ACCESS_FULL
)
556 access
->ac_resp_access
= access
->ac_req_access
;
557 return nfsd_access(rqstp
, &cstate
->current_fh
, &access
->ac_resp_access
,
558 &access
->ac_supported
);
561 static void gen_boot_verifier(nfs4_verifier
*verifier
, struct net
*net
)
564 struct nfsd_net
*nn
= net_generic(net
, nfsd_net_id
);
567 * This is opaque to client, so no need to byte-swap. Use
568 * __force to keep sparse happy
570 verf
[0] = (__force __be32
)nn
->nfssvc_boot
.tv_sec
;
571 verf
[1] = (__force __be32
)nn
->nfssvc_boot
.tv_usec
;
572 memcpy(verifier
->data
, verf
, sizeof(verifier
->data
));
576 nfsd4_commit(struct svc_rqst
*rqstp
, struct nfsd4_compound_state
*cstate
,
577 struct nfsd4_commit
*commit
)
579 gen_boot_verifier(&commit
->co_verf
, SVC_NET(rqstp
));
580 return nfsd_commit(rqstp
, &cstate
->current_fh
, commit
->co_offset
,
585 nfsd4_create(struct svc_rqst
*rqstp
, struct nfsd4_compound_state
*cstate
,
586 struct nfsd4_create
*create
)
592 fh_init(&resfh
, NFS4_FHSIZE
);
594 status
= fh_verify(rqstp
, &cstate
->current_fh
, S_IFDIR
, NFSD_MAY_NOP
);
598 status
= check_attr_support(rqstp
, cstate
, create
->cr_bmval
,
603 switch (create
->cr_type
) {
605 status
= nfsd_symlink(rqstp
, &cstate
->current_fh
,
606 create
->cr_name
, create
->cr_namelen
,
607 create
->cr_data
, &resfh
);
611 rdev
= MKDEV(create
->cr_specdata1
, create
->cr_specdata2
);
612 if (MAJOR(rdev
) != create
->cr_specdata1
||
613 MINOR(rdev
) != create
->cr_specdata2
)
615 status
= nfsd_create(rqstp
, &cstate
->current_fh
,
616 create
->cr_name
, create
->cr_namelen
,
617 &create
->cr_iattr
, S_IFBLK
, rdev
, &resfh
);
621 rdev
= MKDEV(create
->cr_specdata1
, create
->cr_specdata2
);
622 if (MAJOR(rdev
) != create
->cr_specdata1
||
623 MINOR(rdev
) != create
->cr_specdata2
)
625 status
= nfsd_create(rqstp
, &cstate
->current_fh
,
626 create
->cr_name
, create
->cr_namelen
,
627 &create
->cr_iattr
,S_IFCHR
, rdev
, &resfh
);
631 status
= nfsd_create(rqstp
, &cstate
->current_fh
,
632 create
->cr_name
, create
->cr_namelen
,
633 &create
->cr_iattr
, S_IFSOCK
, 0, &resfh
);
637 status
= nfsd_create(rqstp
, &cstate
->current_fh
,
638 create
->cr_name
, create
->cr_namelen
,
639 &create
->cr_iattr
, S_IFIFO
, 0, &resfh
);
643 create
->cr_iattr
.ia_valid
&= ~ATTR_SIZE
;
644 status
= nfsd_create(rqstp
, &cstate
->current_fh
,
645 create
->cr_name
, create
->cr_namelen
,
646 &create
->cr_iattr
, S_IFDIR
, 0, &resfh
);
650 status
= nfserr_badtype
;
656 if (create
->cr_label
.len
)
657 nfsd4_security_inode_setsecctx(&resfh
, &create
->cr_label
, create
->cr_bmval
);
659 if (create
->cr_acl
!= NULL
)
660 do_set_nfs4_acl(rqstp
, &resfh
, create
->cr_acl
,
663 fh_unlock(&cstate
->current_fh
);
664 set_change_info(&create
->cr_cinfo
, &cstate
->current_fh
);
665 fh_dup2(&cstate
->current_fh
, &resfh
);
672 nfsd4_getattr(struct svc_rqst
*rqstp
, struct nfsd4_compound_state
*cstate
,
673 struct nfsd4_getattr
*getattr
)
677 status
= fh_verify(rqstp
, &cstate
->current_fh
, 0, NFSD_MAY_NOP
);
681 if (getattr
->ga_bmval
[1] & NFSD_WRITEONLY_ATTRS_WORD1
)
684 getattr
->ga_bmval
[0] &= nfsd_suppattrs
[cstate
->minorversion
][0];
685 getattr
->ga_bmval
[1] &= nfsd_suppattrs
[cstate
->minorversion
][1];
686 getattr
->ga_bmval
[2] &= nfsd_suppattrs
[cstate
->minorversion
][2];
688 getattr
->ga_fhp
= &cstate
->current_fh
;
693 nfsd4_link(struct svc_rqst
*rqstp
, struct nfsd4_compound_state
*cstate
,
694 struct nfsd4_link
*link
)
696 __be32 status
= nfserr_nofilehandle
;
698 if (!cstate
->save_fh
.fh_dentry
)
700 status
= nfsd_link(rqstp
, &cstate
->current_fh
,
701 link
->li_name
, link
->li_namelen
, &cstate
->save_fh
);
703 set_change_info(&link
->li_cinfo
, &cstate
->current_fh
);
707 static __be32
nfsd4_do_lookupp(struct svc_rqst
*rqstp
, struct svc_fh
*fh
)
709 struct svc_fh tmp_fh
;
712 fh_init(&tmp_fh
, NFS4_FHSIZE
);
713 ret
= exp_pseudoroot(rqstp
, &tmp_fh
);
716 if (tmp_fh
.fh_dentry
== fh
->fh_dentry
) {
721 return nfsd_lookup(rqstp
, fh
, "..", 2, fh
);
725 nfsd4_lookupp(struct svc_rqst
*rqstp
, struct nfsd4_compound_state
*cstate
,
728 return nfsd4_do_lookupp(rqstp
, &cstate
->current_fh
);
732 nfsd4_lookup(struct svc_rqst
*rqstp
, struct nfsd4_compound_state
*cstate
,
733 struct nfsd4_lookup
*lookup
)
735 return nfsd_lookup(rqstp
, &cstate
->current_fh
,
736 lookup
->lo_name
, lookup
->lo_len
,
737 &cstate
->current_fh
);
741 nfsd4_read(struct svc_rqst
*rqstp
, struct nfsd4_compound_state
*cstate
,
742 struct nfsd4_read
*read
)
746 read
->rd_filp
= NULL
;
747 if (read
->rd_offset
>= OFFSET_MAX
)
751 * If we do a zero copy read, then a client will see read data
752 * that reflects the state of the file *after* performing the
753 * following compound.
755 * To ensure proper ordering, we therefore turn off zero copy if
756 * the client wants us to do more in this compound:
758 if (!nfsd4_last_compound_op(rqstp
))
759 clear_bit(RQ_SPLICE_OK
, &rqstp
->rq_flags
);
762 status
= nfs4_preprocess_stateid_op(rqstp
, cstate
, &cstate
->current_fh
,
763 &read
->rd_stateid
, RD_STATE
,
764 &read
->rd_filp
, &read
->rd_tmp_file
);
766 dprintk("NFSD: nfsd4_read: couldn't process stateid!\n");
771 read
->rd_rqstp
= rqstp
;
772 read
->rd_fhp
= &cstate
->current_fh
;
777 nfsd4_readdir(struct svc_rqst
*rqstp
, struct nfsd4_compound_state
*cstate
,
778 struct nfsd4_readdir
*readdir
)
780 u64 cookie
= readdir
->rd_cookie
;
781 static const nfs4_verifier zeroverf
;
783 /* no need to check permission - this will be done in nfsd_readdir() */
785 if (readdir
->rd_bmval
[1] & NFSD_WRITEONLY_ATTRS_WORD1
)
788 readdir
->rd_bmval
[0] &= nfsd_suppattrs
[cstate
->minorversion
][0];
789 readdir
->rd_bmval
[1] &= nfsd_suppattrs
[cstate
->minorversion
][1];
790 readdir
->rd_bmval
[2] &= nfsd_suppattrs
[cstate
->minorversion
][2];
792 if ((cookie
== 1) || (cookie
== 2) ||
793 (cookie
== 0 && memcmp(readdir
->rd_verf
.data
, zeroverf
.data
, NFS4_VERIFIER_SIZE
)))
794 return nfserr_bad_cookie
;
796 readdir
->rd_rqstp
= rqstp
;
797 readdir
->rd_fhp
= &cstate
->current_fh
;
802 nfsd4_readlink(struct svc_rqst
*rqstp
, struct nfsd4_compound_state
*cstate
,
803 struct nfsd4_readlink
*readlink
)
805 readlink
->rl_rqstp
= rqstp
;
806 readlink
->rl_fhp
= &cstate
->current_fh
;
811 nfsd4_remove(struct svc_rqst
*rqstp
, struct nfsd4_compound_state
*cstate
,
812 struct nfsd4_remove
*remove
)
816 if (opens_in_grace(SVC_NET(rqstp
)))
818 status
= nfsd_unlink(rqstp
, &cstate
->current_fh
, 0,
819 remove
->rm_name
, remove
->rm_namelen
);
821 fh_unlock(&cstate
->current_fh
);
822 set_change_info(&remove
->rm_cinfo
, &cstate
->current_fh
);
828 nfsd4_rename(struct svc_rqst
*rqstp
, struct nfsd4_compound_state
*cstate
,
829 struct nfsd4_rename
*rename
)
831 __be32 status
= nfserr_nofilehandle
;
833 if (!cstate
->save_fh
.fh_dentry
)
835 if (opens_in_grace(SVC_NET(rqstp
)) &&
836 !(cstate
->save_fh
.fh_export
->ex_flags
& NFSEXP_NOSUBTREECHECK
))
838 status
= nfsd_rename(rqstp
, &cstate
->save_fh
, rename
->rn_sname
,
839 rename
->rn_snamelen
, &cstate
->current_fh
,
840 rename
->rn_tname
, rename
->rn_tnamelen
);
843 set_change_info(&rename
->rn_sinfo
, &cstate
->current_fh
);
844 set_change_info(&rename
->rn_tinfo
, &cstate
->save_fh
);
849 nfsd4_secinfo(struct svc_rqst
*rqstp
, struct nfsd4_compound_state
*cstate
,
850 struct nfsd4_secinfo
*secinfo
)
852 struct svc_export
*exp
;
853 struct dentry
*dentry
;
856 err
= fh_verify(rqstp
, &cstate
->current_fh
, S_IFDIR
, NFSD_MAY_EXEC
);
859 err
= nfsd_lookup_dentry(rqstp
, &cstate
->current_fh
,
860 secinfo
->si_name
, secinfo
->si_namelen
,
864 fh_unlock(&cstate
->current_fh
);
865 if (d_really_is_negative(dentry
)) {
869 secinfo
->si_exp
= exp
;
871 if (cstate
->minorversion
)
872 /* See rfc 5661 section 2.6.3.1.1.8 */
873 fh_put(&cstate
->current_fh
);
878 nfsd4_secinfo_no_name(struct svc_rqst
*rqstp
, struct nfsd4_compound_state
*cstate
,
879 struct nfsd4_secinfo_no_name
*sin
)
883 switch (sin
->sin_style
) {
884 case NFS4_SECINFO_STYLE4_CURRENT_FH
:
886 case NFS4_SECINFO_STYLE4_PARENT
:
887 err
= nfsd4_do_lookupp(rqstp
, &cstate
->current_fh
);
895 sin
->sin_exp
= exp_get(cstate
->current_fh
.fh_export
);
896 fh_put(&cstate
->current_fh
);
901 nfsd4_setattr(struct svc_rqst
*rqstp
, struct nfsd4_compound_state
*cstate
,
902 struct nfsd4_setattr
*setattr
)
904 __be32 status
= nfs_ok
;
907 if (setattr
->sa_iattr
.ia_valid
& ATTR_SIZE
) {
908 status
= nfs4_preprocess_stateid_op(rqstp
, cstate
,
909 &cstate
->current_fh
, &setattr
->sa_stateid
,
910 WR_STATE
, NULL
, NULL
);
912 dprintk("NFSD: nfsd4_setattr: couldn't process stateid!\n");
916 err
= fh_want_write(&cstate
->current_fh
);
918 return nfserrno(err
);
921 status
= check_attr_support(rqstp
, cstate
, setattr
->sa_bmval
,
926 if (setattr
->sa_acl
!= NULL
)
927 status
= nfsd4_set_nfs4_acl(rqstp
, &cstate
->current_fh
,
931 if (setattr
->sa_label
.len
)
932 status
= nfsd4_set_nfs4_label(rqstp
, &cstate
->current_fh
,
936 status
= nfsd_setattr(rqstp
, &cstate
->current_fh
, &setattr
->sa_iattr
,
939 fh_drop_write(&cstate
->current_fh
);
943 static int fill_in_write_vector(struct kvec
*vec
, struct nfsd4_write
*write
)
946 int buflen
= write
->wr_buflen
;
948 vec
[0].iov_base
= write
->wr_head
.iov_base
;
949 vec
[0].iov_len
= min_t(int, buflen
, write
->wr_head
.iov_len
);
950 buflen
-= vec
[0].iov_len
;
953 vec
[i
].iov_base
= page_address(write
->wr_pagelist
[i
- 1]);
954 vec
[i
].iov_len
= min_t(int, PAGE_SIZE
, buflen
);
955 buflen
-= vec
[i
].iov_len
;
962 nfsd4_write(struct svc_rqst
*rqstp
, struct nfsd4_compound_state
*cstate
,
963 struct nfsd4_write
*write
)
965 stateid_t
*stateid
= &write
->wr_stateid
;
966 struct file
*filp
= NULL
;
967 __be32 status
= nfs_ok
;
971 if (write
->wr_offset
>= OFFSET_MAX
)
974 status
= nfs4_preprocess_stateid_op(rqstp
, cstate
, &cstate
->current_fh
,
975 stateid
, WR_STATE
, &filp
, NULL
);
977 dprintk("NFSD: nfsd4_write: couldn't process stateid!\n");
981 cnt
= write
->wr_buflen
;
982 write
->wr_how_written
= write
->wr_stable_how
;
983 gen_boot_verifier(&write
->wr_verifier
, SVC_NET(rqstp
));
985 nvecs
= fill_in_write_vector(rqstp
->rq_vec
, write
);
986 WARN_ON_ONCE(nvecs
> ARRAY_SIZE(rqstp
->rq_vec
));
988 status
= nfsd_vfs_write(rqstp
, &cstate
->current_fh
, filp
,
989 write
->wr_offset
, rqstp
->rq_vec
, nvecs
, &cnt
,
990 write
->wr_how_written
);
993 write
->wr_bytes_written
= cnt
;
999 nfsd4_verify_copy(struct svc_rqst
*rqstp
, struct nfsd4_compound_state
*cstate
,
1000 stateid_t
*src_stateid
, struct file
**src
,
1001 stateid_t
*dst_stateid
, struct file
**dst
)
1005 status
= nfs4_preprocess_stateid_op(rqstp
, cstate
, &cstate
->save_fh
,
1006 src_stateid
, RD_STATE
, src
, NULL
);
1008 dprintk("NFSD: %s: couldn't process src stateid!\n", __func__
);
1012 status
= nfs4_preprocess_stateid_op(rqstp
, cstate
, &cstate
->current_fh
,
1013 dst_stateid
, WR_STATE
, dst
, NULL
);
1015 dprintk("NFSD: %s: couldn't process dst stateid!\n", __func__
);
1019 /* fix up for NFS-specific error code */
1020 if (!S_ISREG(file_inode(*src
)->i_mode
) ||
1021 !S_ISREG(file_inode(*dst
)->i_mode
)) {
1022 status
= nfserr_wrong_type
;
1036 nfsd4_clone(struct svc_rqst
*rqstp
, struct nfsd4_compound_state
*cstate
,
1037 struct nfsd4_clone
*clone
)
1039 struct file
*src
, *dst
;
1042 status
= nfsd4_verify_copy(rqstp
, cstate
, &clone
->cl_src_stateid
, &src
,
1043 &clone
->cl_dst_stateid
, &dst
);
1047 status
= nfsd4_clone_file_range(src
, clone
->cl_src_pos
,
1048 dst
, clone
->cl_dst_pos
, clone
->cl_count
);
1057 nfsd4_copy(struct svc_rqst
*rqstp
, struct nfsd4_compound_state
*cstate
,
1058 struct nfsd4_copy
*copy
)
1060 struct file
*src
, *dst
;
1064 status
= nfsd4_verify_copy(rqstp
, cstate
, ©
->cp_src_stateid
, &src
,
1065 ©
->cp_dst_stateid
, &dst
);
1069 bytes
= nfsd_copy_file_range(src
, copy
->cp_src_pos
,
1070 dst
, copy
->cp_dst_pos
, copy
->cp_count
);
1073 status
= nfserrno(bytes
);
1075 copy
->cp_res
.wr_bytes_written
= bytes
;
1076 copy
->cp_res
.wr_stable_how
= NFS_UNSTABLE
;
1077 copy
->cp_consecutive
= 1;
1078 copy
->cp_synchronous
= 1;
1079 gen_boot_verifier(©
->cp_res
.wr_verifier
, SVC_NET(rqstp
));
1090 nfsd4_fallocate(struct svc_rqst
*rqstp
, struct nfsd4_compound_state
*cstate
,
1091 struct nfsd4_fallocate
*fallocate
, int flags
)
1093 __be32 status
= nfserr_notsupp
;
1096 status
= nfs4_preprocess_stateid_op(rqstp
, cstate
, &cstate
->current_fh
,
1097 &fallocate
->falloc_stateid
,
1098 WR_STATE
, &file
, NULL
);
1099 if (status
!= nfs_ok
) {
1100 dprintk("NFSD: nfsd4_fallocate: couldn't process stateid!\n");
1104 status
= nfsd4_vfs_fallocate(rqstp
, &cstate
->current_fh
, file
,
1105 fallocate
->falloc_offset
,
1106 fallocate
->falloc_length
,
1113 nfsd4_allocate(struct svc_rqst
*rqstp
, struct nfsd4_compound_state
*cstate
,
1114 struct nfsd4_fallocate
*fallocate
)
1116 return nfsd4_fallocate(rqstp
, cstate
, fallocate
, 0);
1120 nfsd4_deallocate(struct svc_rqst
*rqstp
, struct nfsd4_compound_state
*cstate
,
1121 struct nfsd4_fallocate
*fallocate
)
1123 return nfsd4_fallocate(rqstp
, cstate
, fallocate
,
1124 FALLOC_FL_PUNCH_HOLE
| FALLOC_FL_KEEP_SIZE
);
1128 nfsd4_seek(struct svc_rqst
*rqstp
, struct nfsd4_compound_state
*cstate
,
1129 struct nfsd4_seek
*seek
)
1135 status
= nfs4_preprocess_stateid_op(rqstp
, cstate
, &cstate
->current_fh
,
1136 &seek
->seek_stateid
,
1137 RD_STATE
, &file
, NULL
);
1139 dprintk("NFSD: nfsd4_seek: couldn't process stateid!\n");
1143 switch (seek
->seek_whence
) {
1144 case NFS4_CONTENT_DATA
:
1147 case NFS4_CONTENT_HOLE
:
1151 status
= nfserr_union_notsupp
;
1156 * Note: This call does change file->f_pos, but nothing in NFSD
1157 * should ever file->f_pos.
1159 seek
->seek_pos
= vfs_llseek(file
, seek
->seek_offset
, whence
);
1160 if (seek
->seek_pos
< 0)
1161 status
= nfserrno(seek
->seek_pos
);
1162 else if (seek
->seek_pos
>= i_size_read(file_inode(file
)))
1163 seek
->seek_eof
= true;
1170 /* This routine never returns NFS_OK! If there are no other errors, it
1171 * will return NFSERR_SAME or NFSERR_NOT_SAME depending on whether the
1172 * attributes matched. VERIFY is implemented by mapping NFSERR_SAME
1173 * to NFS_OK after the call; NVERIFY by mapping NFSERR_NOT_SAME to NFS_OK.
1176 _nfsd4_verify(struct svc_rqst
*rqstp
, struct nfsd4_compound_state
*cstate
,
1177 struct nfsd4_verify
*verify
)
1183 status
= fh_verify(rqstp
, &cstate
->current_fh
, 0, NFSD_MAY_NOP
);
1187 status
= check_attr_support(rqstp
, cstate
, verify
->ve_bmval
, NULL
);
1191 if ((verify
->ve_bmval
[0] & FATTR4_WORD0_RDATTR_ERROR
)
1192 || (verify
->ve_bmval
[1] & NFSD_WRITEONLY_ATTRS_WORD1
))
1193 return nfserr_inval
;
1194 if (verify
->ve_attrlen
& 3)
1195 return nfserr_inval
;
1198 * bitmap_len(1) + bitmap(2) + attr_len(1) = 4
1200 count
= 4 + (verify
->ve_attrlen
>> 2);
1201 buf
= kmalloc(count
<< 2, GFP_KERNEL
);
1203 return nfserr_jukebox
;
1206 status
= nfsd4_encode_fattr_to_buf(&p
, count
, &cstate
->current_fh
,
1207 cstate
->current_fh
.fh_export
,
1208 cstate
->current_fh
.fh_dentry
,
1212 * If nfsd4_encode_fattr() ran out of space, assume that's because
1213 * the attributes are longer (hence different) than those given:
1215 if (status
== nfserr_resource
)
1216 status
= nfserr_not_same
;
1221 p
= buf
+ 1 + ntohl(buf
[0]);
1222 status
= nfserr_not_same
;
1223 if (ntohl(*p
++) != verify
->ve_attrlen
)
1225 if (!memcmp(p
, verify
->ve_attrval
, verify
->ve_attrlen
))
1226 status
= nfserr_same
;
1234 nfsd4_nverify(struct svc_rqst
*rqstp
, struct nfsd4_compound_state
*cstate
,
1235 struct nfsd4_verify
*verify
)
1239 status
= _nfsd4_verify(rqstp
, cstate
, verify
);
1240 return status
== nfserr_not_same
? nfs_ok
: status
;
1244 nfsd4_verify(struct svc_rqst
*rqstp
, struct nfsd4_compound_state
*cstate
,
1245 struct nfsd4_verify
*verify
)
1249 status
= _nfsd4_verify(rqstp
, cstate
, verify
);
1250 return status
== nfserr_same
? nfs_ok
: status
;
1253 #ifdef CONFIG_NFSD_PNFS
1254 static const struct nfsd4_layout_ops
*
1255 nfsd4_layout_verify(struct svc_export
*exp
, unsigned int layout_type
)
1257 if (!exp
->ex_layout_types
) {
1258 dprintk("%s: export does not support pNFS\n", __func__
);
1262 if (!(exp
->ex_layout_types
& (1 << layout_type
))) {
1263 dprintk("%s: layout type %d not supported\n",
1264 __func__
, layout_type
);
1268 return nfsd4_layout_ops
[layout_type
];
1272 nfsd4_getdeviceinfo(struct svc_rqst
*rqstp
,
1273 struct nfsd4_compound_state
*cstate
,
1274 struct nfsd4_getdeviceinfo
*gdp
)
1276 const struct nfsd4_layout_ops
*ops
;
1277 struct nfsd4_deviceid_map
*map
;
1278 struct svc_export
*exp
;
1281 dprintk("%s: layout_type %u dev_id [0x%llx:0x%x] maxcnt %u\n",
1283 gdp
->gd_layout_type
,
1284 gdp
->gd_devid
.fsid_idx
, gdp
->gd_devid
.generation
,
1287 map
= nfsd4_find_devid_map(gdp
->gd_devid
.fsid_idx
);
1289 dprintk("%s: couldn't find device ID to export mapping!\n",
1291 return nfserr_noent
;
1294 exp
= rqst_exp_find(rqstp
, map
->fsid_type
, map
->fsid
);
1296 dprintk("%s: could not find device id\n", __func__
);
1297 return nfserr_noent
;
1300 nfserr
= nfserr_layoutunavailable
;
1301 ops
= nfsd4_layout_verify(exp
, gdp
->gd_layout_type
);
1306 if (gdp
->gd_maxcount
!= 0) {
1307 nfserr
= ops
->proc_getdeviceinfo(exp
->ex_path
.mnt
->mnt_sb
,
1308 rqstp
, cstate
->session
->se_client
, gdp
);
1311 gdp
->gd_notify_types
&= ops
->notify_types
;
1318 nfsd4_layoutget(struct svc_rqst
*rqstp
,
1319 struct nfsd4_compound_state
*cstate
,
1320 struct nfsd4_layoutget
*lgp
)
1322 struct svc_fh
*current_fh
= &cstate
->current_fh
;
1323 const struct nfsd4_layout_ops
*ops
;
1324 struct nfs4_layout_stateid
*ls
;
1328 switch (lgp
->lg_seg
.iomode
) {
1330 accmode
= NFSD_MAY_READ
;
1333 accmode
= NFSD_MAY_READ
| NFSD_MAY_WRITE
;
1336 dprintk("%s: invalid iomode %d\n",
1337 __func__
, lgp
->lg_seg
.iomode
);
1338 nfserr
= nfserr_badiomode
;
1342 nfserr
= fh_verify(rqstp
, current_fh
, 0, accmode
);
1346 nfserr
= nfserr_layoutunavailable
;
1347 ops
= nfsd4_layout_verify(current_fh
->fh_export
, lgp
->lg_layout_type
);
1352 * Verify minlength and range as per RFC5661:
1353 * o If loga_length is less than loga_minlength,
1354 * the metadata server MUST return NFS4ERR_INVAL.
1355 * o If the sum of loga_offset and loga_minlength exceeds
1356 * NFS4_UINT64_MAX, and loga_minlength is not
1357 * NFS4_UINT64_MAX, the error NFS4ERR_INVAL MUST result.
1358 * o If the sum of loga_offset and loga_length exceeds
1359 * NFS4_UINT64_MAX, and loga_length is not NFS4_UINT64_MAX,
1360 * the error NFS4ERR_INVAL MUST result.
1362 nfserr
= nfserr_inval
;
1363 if (lgp
->lg_seg
.length
< lgp
->lg_minlength
||
1364 (lgp
->lg_minlength
!= NFS4_MAX_UINT64
&&
1365 lgp
->lg_minlength
> NFS4_MAX_UINT64
- lgp
->lg_seg
.offset
) ||
1366 (lgp
->lg_seg
.length
!= NFS4_MAX_UINT64
&&
1367 lgp
->lg_seg
.length
> NFS4_MAX_UINT64
- lgp
->lg_seg
.offset
))
1369 if (lgp
->lg_seg
.length
== 0)
1372 nfserr
= nfsd4_preprocess_layout_stateid(rqstp
, cstate
, &lgp
->lg_sid
,
1373 true, lgp
->lg_layout_type
, &ls
);
1375 trace_layout_get_lookup_fail(&lgp
->lg_sid
);
1379 nfserr
= nfserr_recallconflict
;
1380 if (atomic_read(&ls
->ls_stid
.sc_file
->fi_lo_recalls
))
1383 nfserr
= ops
->proc_layoutget(d_inode(current_fh
->fh_dentry
),
1388 nfserr
= nfsd4_insert_layout(lgp
, ls
);
1391 mutex_unlock(&ls
->ls_mutex
);
1392 nfs4_put_stid(&ls
->ls_stid
);
1398 nfsd4_layoutcommit(struct svc_rqst
*rqstp
,
1399 struct nfsd4_compound_state
*cstate
,
1400 struct nfsd4_layoutcommit
*lcp
)
1402 const struct nfsd4_layout_seg
*seg
= &lcp
->lc_seg
;
1403 struct svc_fh
*current_fh
= &cstate
->current_fh
;
1404 const struct nfsd4_layout_ops
*ops
;
1405 loff_t new_size
= lcp
->lc_last_wr
+ 1;
1406 struct inode
*inode
;
1407 struct nfs4_layout_stateid
*ls
;
1410 nfserr
= fh_verify(rqstp
, current_fh
, 0, NFSD_MAY_WRITE
);
1414 nfserr
= nfserr_layoutunavailable
;
1415 ops
= nfsd4_layout_verify(current_fh
->fh_export
, lcp
->lc_layout_type
);
1418 inode
= d_inode(current_fh
->fh_dentry
);
1420 nfserr
= nfserr_inval
;
1421 if (new_size
<= seg
->offset
) {
1422 dprintk("pnfsd: last write before layout segment\n");
1425 if (new_size
> seg
->offset
+ seg
->length
) {
1426 dprintk("pnfsd: last write beyond layout segment\n");
1429 if (!lcp
->lc_newoffset
&& new_size
> i_size_read(inode
)) {
1430 dprintk("pnfsd: layoutcommit beyond EOF\n");
1434 nfserr
= nfsd4_preprocess_layout_stateid(rqstp
, cstate
, &lcp
->lc_sid
,
1435 false, lcp
->lc_layout_type
,
1438 trace_layout_commit_lookup_fail(&lcp
->lc_sid
);
1439 /* fixup error code as per RFC5661 */
1440 if (nfserr
== nfserr_bad_stateid
)
1441 nfserr
= nfserr_badlayout
;
1445 /* LAYOUTCOMMIT does not require any serialization */
1446 mutex_unlock(&ls
->ls_mutex
);
1448 if (new_size
> i_size_read(inode
)) {
1449 lcp
->lc_size_chg
= 1;
1450 lcp
->lc_newsize
= new_size
;
1452 lcp
->lc_size_chg
= 0;
1455 nfserr
= ops
->proc_layoutcommit(inode
, lcp
);
1456 nfs4_put_stid(&ls
->ls_stid
);
1462 nfsd4_layoutreturn(struct svc_rqst
*rqstp
,
1463 struct nfsd4_compound_state
*cstate
,
1464 struct nfsd4_layoutreturn
*lrp
)
1466 struct svc_fh
*current_fh
= &cstate
->current_fh
;
1469 nfserr
= fh_verify(rqstp
, current_fh
, 0, NFSD_MAY_NOP
);
1473 nfserr
= nfserr_layoutunavailable
;
1474 if (!nfsd4_layout_verify(current_fh
->fh_export
, lrp
->lr_layout_type
))
1477 switch (lrp
->lr_seg
.iomode
) {
1483 dprintk("%s: invalid iomode %d\n", __func__
,
1484 lrp
->lr_seg
.iomode
);
1485 nfserr
= nfserr_inval
;
1489 switch (lrp
->lr_return_type
) {
1491 nfserr
= nfsd4_return_file_layouts(rqstp
, cstate
, lrp
);
1495 nfserr
= nfsd4_return_client_layouts(rqstp
, cstate
, lrp
);
1498 dprintk("%s: invalid return_type %d\n", __func__
,
1499 lrp
->lr_return_type
);
1500 nfserr
= nfserr_inval
;
1506 #endif /* CONFIG_NFSD_PNFS */
1512 nfsd4_proc_null(struct svc_rqst
*rqstp
, void *argp
, void *resp
)
1517 static inline void nfsd4_increment_op_stats(u32 opnum
)
1519 if (opnum
>= FIRST_NFS4_OP
&& opnum
<= LAST_NFS4_OP
)
1520 nfsdstats
.nfs4_opcount
[opnum
]++;
1523 typedef __be32(*nfsd4op_func
)(struct svc_rqst
*, struct nfsd4_compound_state
*,
1525 typedef u32(*nfsd4op_rsize
)(struct svc_rqst
*, struct nfsd4_op
*op
);
1526 typedef void(*stateid_setter
)(struct nfsd4_compound_state
*, void *);
1527 typedef void(*stateid_getter
)(struct nfsd4_compound_state
*, void *);
1529 enum nfsd4_op_flags
{
1530 ALLOWED_WITHOUT_FH
= 1 << 0, /* No current filehandle required */
1531 ALLOWED_ON_ABSENT_FS
= 1 << 1, /* ops processed on absent fs */
1532 ALLOWED_AS_FIRST_OP
= 1 << 2, /* ops reqired first in compound */
1533 /* For rfc 5661 section 2.6.3.1.1: */
1534 OP_HANDLES_WRONGSEC
= 1 << 3,
1535 OP_IS_PUTFH_LIKE
= 1 << 4,
1537 * These are the ops whose result size we estimate before
1538 * encoding, to avoid performing an op then not being able to
1539 * respond or cache a response. This includes writes and setattrs
1540 * as well as the operations usually called "nonidempotent":
1542 OP_MODIFIES_SOMETHING
= 1 << 5,
1544 * Cache compounds containing these ops in the xid-based drc:
1545 * We use the DRC for compounds containing non-idempotent
1546 * operations, *except* those that are 4.1-specific (since
1547 * sessions provide their own EOS), and except for stateful
1548 * operations other than setclientid and setclientid_confirm
1549 * (since sequence numbers provide EOS for open, lock, etc in
1552 OP_CACHEME
= 1 << 6,
1554 * These are ops which clear current state id.
1556 OP_CLEAR_STATEID
= 1 << 7,
1559 struct nfsd4_operation
{
1560 nfsd4op_func op_func
;
1563 /* Try to get response size before operation */
1564 nfsd4op_rsize op_rsize_bop
;
1565 stateid_getter op_get_currentstateid
;
1566 stateid_setter op_set_currentstateid
;
1569 static struct nfsd4_operation nfsd4_ops
[];
1571 static const char *nfsd4_op_name(unsigned opnum
);
1574 * Enforce NFSv4.1 COMPOUND ordering rules:
1576 * Also note, enforced elsewhere:
1577 * - SEQUENCE other than as first op results in
1578 * NFS4ERR_SEQUENCE_POS. (Enforced in nfsd4_sequence().)
1579 * - BIND_CONN_TO_SESSION must be the only op in its compound.
1580 * (Enforced in nfsd4_bind_conn_to_session().)
1581 * - DESTROY_SESSION must be the final operation in a compound, if
1582 * sessionid's in SEQUENCE and DESTROY_SESSION are the same.
1583 * (Enforced in nfsd4_destroy_session().)
1585 static __be32
nfs41_check_op_ordering(struct nfsd4_compoundargs
*args
)
1587 struct nfsd4_op
*op
= &args
->ops
[0];
1589 /* These ordering requirements don't apply to NFSv4.0: */
1590 if (args
->minorversion
== 0)
1592 /* This is weird, but OK, not our problem: */
1593 if (args
->opcnt
== 0)
1595 if (op
->status
== nfserr_op_illegal
)
1597 if (!(nfsd4_ops
[op
->opnum
].op_flags
& ALLOWED_AS_FIRST_OP
))
1598 return nfserr_op_not_in_session
;
1599 if (op
->opnum
== OP_SEQUENCE
)
1601 if (args
->opcnt
!= 1)
1602 return nfserr_not_only_op
;
1606 static inline struct nfsd4_operation
*OPDESC(struct nfsd4_op
*op
)
1608 return &nfsd4_ops
[op
->opnum
];
1611 bool nfsd4_cache_this_op(struct nfsd4_op
*op
)
1613 if (op
->opnum
== OP_ILLEGAL
)
1615 return OPDESC(op
)->op_flags
& OP_CACHEME
;
1618 static bool need_wrongsec_check(struct svc_rqst
*rqstp
)
1620 struct nfsd4_compoundres
*resp
= rqstp
->rq_resp
;
1621 struct nfsd4_compoundargs
*argp
= rqstp
->rq_argp
;
1622 struct nfsd4_op
*this = &argp
->ops
[resp
->opcnt
- 1];
1623 struct nfsd4_op
*next
= &argp
->ops
[resp
->opcnt
];
1624 struct nfsd4_operation
*thisd
;
1625 struct nfsd4_operation
*nextd
;
1627 thisd
= OPDESC(this);
1629 * Most ops check wronsec on our own; only the putfh-like ops
1630 * have special rules.
1632 if (!(thisd
->op_flags
& OP_IS_PUTFH_LIKE
))
1635 * rfc 5661 2.6.3.1.1.6: don't bother erroring out a
1636 * put-filehandle operation if we're not going to use the
1639 if (argp
->opcnt
== resp
->opcnt
)
1641 if (next
->opnum
== OP_ILLEGAL
)
1643 nextd
= OPDESC(next
);
1645 * Rest of 2.6.3.1.1: certain operations will return WRONGSEC
1646 * errors themselves as necessary; others should check for them
1649 return !(nextd
->op_flags
& OP_HANDLES_WRONGSEC
);
1652 static void svcxdr_init_encode(struct svc_rqst
*rqstp
,
1653 struct nfsd4_compoundres
*resp
)
1655 struct xdr_stream
*xdr
= &resp
->xdr
;
1656 struct xdr_buf
*buf
= &rqstp
->rq_res
;
1657 struct kvec
*head
= buf
->head
;
1661 xdr
->p
= head
->iov_base
+ head
->iov_len
;
1662 xdr
->end
= head
->iov_base
+ PAGE_SIZE
- rqstp
->rq_auth_slack
;
1663 /* Tail and page_len should be zero at this point: */
1664 buf
->len
= buf
->head
[0].iov_len
;
1665 xdr
->scratch
.iov_len
= 0;
1666 xdr
->page_ptr
= buf
->pages
- 1;
1667 buf
->buflen
= PAGE_SIZE
* (1 + rqstp
->rq_page_end
- buf
->pages
)
1668 - rqstp
->rq_auth_slack
;
1675 nfsd4_proc_compound(struct svc_rqst
*rqstp
,
1676 struct nfsd4_compoundargs
*args
,
1677 struct nfsd4_compoundres
*resp
)
1679 struct nfsd4_op
*op
;
1680 struct nfsd4_operation
*opdesc
;
1681 struct nfsd4_compound_state
*cstate
= &resp
->cstate
;
1682 struct svc_fh
*current_fh
= &cstate
->current_fh
;
1683 struct svc_fh
*save_fh
= &cstate
->save_fh
;
1686 svcxdr_init_encode(rqstp
, resp
);
1687 resp
->tagp
= resp
->xdr
.p
;
1688 /* reserve space for: taglen, tag, and opcnt */
1689 xdr_reserve_space(&resp
->xdr
, 8 + args
->taglen
);
1690 resp
->taglen
= args
->taglen
;
1691 resp
->tag
= args
->tag
;
1692 resp
->rqstp
= rqstp
;
1693 cstate
->minorversion
= args
->minorversion
;
1694 fh_init(current_fh
, NFS4_FHSIZE
);
1695 fh_init(save_fh
, NFS4_FHSIZE
);
1697 * Don't use the deferral mechanism for NFSv4; compounds make it
1698 * too hard to avoid non-idempotency problems.
1700 clear_bit(RQ_USEDEFERRAL
, &rqstp
->rq_flags
);
1703 * According to RFC3010, this takes precedence over all other errors.
1705 status
= nfserr_minor_vers_mismatch
;
1706 if (nfsd_minorversion(args
->minorversion
, NFSD_TEST
) <= 0)
1709 status
= nfs41_check_op_ordering(args
);
1712 op
->status
= status
;
1716 while (!status
&& resp
->opcnt
< args
->opcnt
) {
1717 op
= &args
->ops
[resp
->opcnt
++];
1719 dprintk("nfsv4 compound op #%d/%d: %d (%s)\n",
1720 resp
->opcnt
, args
->opcnt
, op
->opnum
,
1721 nfsd4_op_name(op
->opnum
));
1723 * The XDR decode routines may have pre-set op->status;
1724 * for example, if there is a miscellaneous XDR error
1725 * it will be set to nfserr_bad_xdr.
1728 if (op
->opnum
== OP_OPEN
)
1729 op
->status
= nfsd4_open_omfg(rqstp
, cstate
, op
);
1733 opdesc
= OPDESC(op
);
1735 if (!current_fh
->fh_dentry
) {
1736 if (!(opdesc
->op_flags
& ALLOWED_WITHOUT_FH
)) {
1737 op
->status
= nfserr_nofilehandle
;
1740 } else if (current_fh
->fh_export
->ex_fslocs
.migrated
&&
1741 !(opdesc
->op_flags
& ALLOWED_ON_ABSENT_FS
)) {
1742 op
->status
= nfserr_moved
;
1746 fh_clear_wcc(current_fh
);
1748 /* If op is non-idempotent */
1749 if (opdesc
->op_flags
& OP_MODIFIES_SOMETHING
) {
1751 * Don't execute this op if we couldn't encode a
1754 u32 plen
= opdesc
->op_rsize_bop(rqstp
, op
);
1756 * Plus if there's another operation, make sure
1757 * we'll have space to at least encode an error:
1759 if (resp
->opcnt
< args
->opcnt
)
1760 plen
+= COMPOUND_ERR_SLACK_SPACE
;
1761 op
->status
= nfsd4_check_resp_size(resp
, plen
);
1767 if (opdesc
->op_get_currentstateid
)
1768 opdesc
->op_get_currentstateid(cstate
, &op
->u
);
1769 op
->status
= opdesc
->op_func(rqstp
, cstate
, &op
->u
);
1772 if (opdesc
->op_set_currentstateid
)
1773 opdesc
->op_set_currentstateid(cstate
, &op
->u
);
1775 if (opdesc
->op_flags
& OP_CLEAR_STATEID
)
1776 clear_current_stateid(cstate
);
1778 if (need_wrongsec_check(rqstp
))
1779 op
->status
= check_nfsd_access(current_fh
->fh_export
, rqstp
);
1783 /* Only from SEQUENCE */
1784 if (cstate
->status
== nfserr_replay_cache
) {
1785 dprintk("%s NFS4.1 replay from cache\n", __func__
);
1786 status
= op
->status
;
1789 if (op
->status
== nfserr_replay_me
) {
1790 op
->replay
= &cstate
->replay_owner
->so_replay
;
1791 nfsd4_encode_replay(&resp
->xdr
, op
);
1792 status
= op
->status
= op
->replay
->rp_status
;
1794 nfsd4_encode_operation(resp
, op
);
1795 status
= op
->status
;
1798 dprintk("nfsv4 compound op %p opcnt %d #%d: %d: status %d\n",
1799 args
->ops
, args
->opcnt
, resp
->opcnt
, op
->opnum
,
1800 be32_to_cpu(status
));
1802 nfsd4_cstate_clear_replay(cstate
);
1803 nfsd4_increment_op_stats(op
->opnum
);
1806 cstate
->status
= status
;
1809 BUG_ON(cstate
->replay_owner
);
1811 /* Reset deferral mechanism for RPC deferrals */
1812 set_bit(RQ_USEDEFERRAL
, &rqstp
->rq_flags
);
1813 dprintk("nfsv4 compound returned %d\n", ntohl(status
));
1817 #define op_encode_hdr_size (2)
1818 #define op_encode_stateid_maxsz (XDR_QUADLEN(NFS4_STATEID_SIZE))
1819 #define op_encode_verifier_maxsz (XDR_QUADLEN(NFS4_VERIFIER_SIZE))
1820 #define op_encode_change_info_maxsz (5)
1821 #define nfs4_fattr_bitmap_maxsz (4)
1823 /* We'll fall back on returning no lockowner if run out of space: */
1824 #define op_encode_lockowner_maxsz (0)
1825 #define op_encode_lock_denied_maxsz (8 + op_encode_lockowner_maxsz)
1827 #define nfs4_owner_maxsz (1 + XDR_QUADLEN(IDMAP_NAMESZ))
1829 #define op_encode_ace_maxsz (3 + nfs4_owner_maxsz)
1830 #define op_encode_delegation_maxsz (1 + op_encode_stateid_maxsz + 1 + \
1831 op_encode_ace_maxsz)
1833 #define op_encode_channel_attrs_maxsz (6 + 1 + 1)
1835 static inline u32
nfsd4_only_status_rsize(struct svc_rqst
*rqstp
, struct nfsd4_op
*op
)
1837 return (op_encode_hdr_size
) * sizeof(__be32
);
1840 static inline u32
nfsd4_status_stateid_rsize(struct svc_rqst
*rqstp
, struct nfsd4_op
*op
)
1842 return (op_encode_hdr_size
+ op_encode_stateid_maxsz
)* sizeof(__be32
);
1845 static inline u32
nfsd4_access_rsize(struct svc_rqst
*rqstp
, struct nfsd4_op
*op
)
1847 /* ac_supported, ac_resp_access */
1848 return (op_encode_hdr_size
+ 2)* sizeof(__be32
);
1851 static inline u32
nfsd4_commit_rsize(struct svc_rqst
*rqstp
, struct nfsd4_op
*op
)
1853 return (op_encode_hdr_size
+ op_encode_verifier_maxsz
) * sizeof(__be32
);
1856 static inline u32
nfsd4_create_rsize(struct svc_rqst
*rqstp
, struct nfsd4_op
*op
)
1858 return (op_encode_hdr_size
+ op_encode_change_info_maxsz
1859 + nfs4_fattr_bitmap_maxsz
) * sizeof(__be32
);
1863 * Note since this is an idempotent operation we won't insist on failing
1864 * the op prematurely if the estimate is too large. We may turn off splice
1865 * reads unnecessarily.
1867 static inline u32
nfsd4_getattr_rsize(struct svc_rqst
*rqstp
,
1868 struct nfsd4_op
*op
)
1870 u32
*bmap
= op
->u
.getattr
.ga_bmval
;
1871 u32 bmap0
= bmap
[0], bmap1
= bmap
[1], bmap2
= bmap
[2];
1874 if (bmap0
& FATTR4_WORD0_ACL
)
1875 return svc_max_payload(rqstp
);
1876 if (bmap0
& FATTR4_WORD0_FS_LOCATIONS
)
1877 return svc_max_payload(rqstp
);
1879 if (bmap1
& FATTR4_WORD1_OWNER
) {
1880 ret
+= IDMAP_NAMESZ
+ 4;
1881 bmap1
&= ~FATTR4_WORD1_OWNER
;
1883 if (bmap1
& FATTR4_WORD1_OWNER_GROUP
) {
1884 ret
+= IDMAP_NAMESZ
+ 4;
1885 bmap1
&= ~FATTR4_WORD1_OWNER_GROUP
;
1887 if (bmap0
& FATTR4_WORD0_FILEHANDLE
) {
1888 ret
+= NFS4_FHSIZE
+ 4;
1889 bmap0
&= ~FATTR4_WORD0_FILEHANDLE
;
1891 if (bmap2
& FATTR4_WORD2_SECURITY_LABEL
) {
1892 ret
+= NFS4_MAXLABELLEN
+ 12;
1893 bmap2
&= ~FATTR4_WORD2_SECURITY_LABEL
;
1896 * Largest of remaining attributes are 16 bytes (e.g.,
1897 * supported_attributes)
1899 ret
+= 16 * (hweight32(bmap0
) + hweight32(bmap1
) + hweight32(bmap2
));
1900 /* bitmask, length */
1905 static inline u32
nfsd4_getfh_rsize(struct svc_rqst
*rqstp
, struct nfsd4_op
*op
)
1907 return (op_encode_hdr_size
+ 1) * sizeof(__be32
) + NFS4_FHSIZE
;
1910 static inline u32
nfsd4_link_rsize(struct svc_rqst
*rqstp
, struct nfsd4_op
*op
)
1912 return (op_encode_hdr_size
+ op_encode_change_info_maxsz
)
1916 static inline u32
nfsd4_lock_rsize(struct svc_rqst
*rqstp
, struct nfsd4_op
*op
)
1918 return (op_encode_hdr_size
+ op_encode_lock_denied_maxsz
)
1922 static inline u32
nfsd4_open_rsize(struct svc_rqst
*rqstp
, struct nfsd4_op
*op
)
1924 return (op_encode_hdr_size
+ op_encode_stateid_maxsz
1925 + op_encode_change_info_maxsz
+ 1
1926 + nfs4_fattr_bitmap_maxsz
1927 + op_encode_delegation_maxsz
) * sizeof(__be32
);
1930 static inline u32
nfsd4_read_rsize(struct svc_rqst
*rqstp
, struct nfsd4_op
*op
)
1932 u32 maxcount
= 0, rlen
= 0;
1934 maxcount
= svc_max_payload(rqstp
);
1935 rlen
= min(op
->u
.read
.rd_length
, maxcount
);
1937 return (op_encode_hdr_size
+ 2 + XDR_QUADLEN(rlen
)) * sizeof(__be32
);
1940 static inline u32
nfsd4_readdir_rsize(struct svc_rqst
*rqstp
, struct nfsd4_op
*op
)
1942 u32 maxcount
= 0, rlen
= 0;
1944 maxcount
= svc_max_payload(rqstp
);
1945 rlen
= min(op
->u
.readdir
.rd_maxcount
, maxcount
);
1947 return (op_encode_hdr_size
+ op_encode_verifier_maxsz
+
1948 XDR_QUADLEN(rlen
)) * sizeof(__be32
);
1951 static inline u32
nfsd4_readlink_rsize(struct svc_rqst
*rqstp
, struct nfsd4_op
*op
)
1953 return (op_encode_hdr_size
+ 1) * sizeof(__be32
) + PAGE_SIZE
;
1956 static inline u32
nfsd4_remove_rsize(struct svc_rqst
*rqstp
, struct nfsd4_op
*op
)
1958 return (op_encode_hdr_size
+ op_encode_change_info_maxsz
)
1962 static inline u32
nfsd4_rename_rsize(struct svc_rqst
*rqstp
, struct nfsd4_op
*op
)
1964 return (op_encode_hdr_size
+ op_encode_change_info_maxsz
1965 + op_encode_change_info_maxsz
) * sizeof(__be32
);
1968 static inline u32
nfsd4_sequence_rsize(struct svc_rqst
*rqstp
,
1969 struct nfsd4_op
*op
)
1971 return (op_encode_hdr_size
1972 + XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN
) + 5) * sizeof(__be32
);
1975 static inline u32
nfsd4_test_stateid_rsize(struct svc_rqst
*rqstp
, struct nfsd4_op
*op
)
1977 return (op_encode_hdr_size
+ 1 + op
->u
.test_stateid
.ts_num_ids
)
1981 static inline u32
nfsd4_setattr_rsize(struct svc_rqst
*rqstp
, struct nfsd4_op
*op
)
1983 return (op_encode_hdr_size
+ nfs4_fattr_bitmap_maxsz
) * sizeof(__be32
);
1986 static inline u32
nfsd4_secinfo_rsize(struct svc_rqst
*rqstp
, struct nfsd4_op
*op
)
1988 return (op_encode_hdr_size
+ RPC_AUTH_MAXFLAVOR
*
1989 (4 + XDR_QUADLEN(GSS_OID_MAX_LEN
))) * sizeof(__be32
);
1992 static inline u32
nfsd4_setclientid_rsize(struct svc_rqst
*rqstp
, struct nfsd4_op
*op
)
1994 return (op_encode_hdr_size
+ 2 + XDR_QUADLEN(NFS4_VERIFIER_SIZE
)) *
1998 static inline u32
nfsd4_write_rsize(struct svc_rqst
*rqstp
, struct nfsd4_op
*op
)
2000 return (op_encode_hdr_size
+ 2 + op_encode_verifier_maxsz
) * sizeof(__be32
);
2003 static inline u32
nfsd4_exchange_id_rsize(struct svc_rqst
*rqstp
, struct nfsd4_op
*op
)
2005 return (op_encode_hdr_size
+ 2 + 1 + /* eir_clientid, eir_sequenceid */\
2006 1 + 1 + /* eir_flags, spr_how */\
2007 4 + /* spo_must_enforce & _allow with bitmap */\
2008 2 + /*eir_server_owner.so_minor_id */\
2009 /* eir_server_owner.so_major_id<> */\
2010 XDR_QUADLEN(NFS4_OPAQUE_LIMIT
) + 1 +\
2011 /* eir_server_scope<> */\
2012 XDR_QUADLEN(NFS4_OPAQUE_LIMIT
) + 1 +\
2013 1 + /* eir_server_impl_id array length */\
2014 0 /* ignored eir_server_impl_id contents */) * sizeof(__be32
);
2017 static inline u32
nfsd4_bind_conn_to_session_rsize(struct svc_rqst
*rqstp
, struct nfsd4_op
*op
)
2019 return (op_encode_hdr_size
+ \
2020 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN
) + /* bctsr_sessid */\
2021 2 /* bctsr_dir, use_conn_in_rdma_mode */) * sizeof(__be32
);
2024 static inline u32
nfsd4_create_session_rsize(struct svc_rqst
*rqstp
, struct nfsd4_op
*op
)
2026 return (op_encode_hdr_size
+ \
2027 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN
) + /* sessionid */\
2028 2 + /* csr_sequence, csr_flags */\
2029 op_encode_channel_attrs_maxsz
+ \
2030 op_encode_channel_attrs_maxsz
) * sizeof(__be32
);
2033 static inline u32
nfsd4_copy_rsize(struct svc_rqst
*rqstp
, struct nfsd4_op
*op
)
2035 return (op_encode_hdr_size
+
2036 1 /* wr_callback */ +
2037 op_encode_stateid_maxsz
/* wr_callback */ +
2039 1 /* wr_committed */ +
2040 op_encode_verifier_maxsz
+
2041 1 /* cr_consecutive */ +
2042 1 /* cr_synchronous */) * sizeof(__be32
);
2045 #ifdef CONFIG_NFSD_PNFS
2046 static inline u32
nfsd4_getdeviceinfo_rsize(struct svc_rqst
*rqstp
, struct nfsd4_op
*op
)
2048 u32 maxcount
= 0, rlen
= 0;
2050 maxcount
= svc_max_payload(rqstp
);
2051 rlen
= min(op
->u
.getdeviceinfo
.gd_maxcount
, maxcount
);
2053 return (op_encode_hdr_size
+
2054 1 /* gd_layout_type*/ +
2056 2 /* gd_notify_types */) * sizeof(__be32
);
2060 * At this stage we don't really know what layout driver will handle the request,
2061 * so we need to define an arbitrary upper bound here.
2063 #define MAX_LAYOUT_SIZE 128
2064 static inline u32
nfsd4_layoutget_rsize(struct svc_rqst
*rqstp
, struct nfsd4_op
*op
)
2066 return (op_encode_hdr_size
+
2067 1 /* logr_return_on_close */ +
2068 op_encode_stateid_maxsz
+
2069 1 /* nr of layouts */ +
2070 MAX_LAYOUT_SIZE
) * sizeof(__be32
);
2073 static inline u32
nfsd4_layoutcommit_rsize(struct svc_rqst
*rqstp
, struct nfsd4_op
*op
)
2075 return (op_encode_hdr_size
+
2076 1 /* locr_newsize */ +
2077 2 /* ns_size */) * sizeof(__be32
);
2080 static inline u32
nfsd4_layoutreturn_rsize(struct svc_rqst
*rqstp
, struct nfsd4_op
*op
)
2082 return (op_encode_hdr_size
+
2083 1 /* lrs_stateid */ +
2084 op_encode_stateid_maxsz
) * sizeof(__be32
);
2086 #endif /* CONFIG_NFSD_PNFS */
2089 static inline u32
nfsd4_seek_rsize(struct svc_rqst
*rqstp
, struct nfsd4_op
*op
)
2091 return (op_encode_hdr_size
+ 3) * sizeof(__be32
);
2094 static struct nfsd4_operation nfsd4_ops
[] = {
2096 .op_func
= (nfsd4op_func
)nfsd4_access
,
2097 .op_name
= "OP_ACCESS",
2098 .op_rsize_bop
= (nfsd4op_rsize
)nfsd4_access_rsize
,
2101 .op_func
= (nfsd4op_func
)nfsd4_close
,
2102 .op_flags
= OP_MODIFIES_SOMETHING
,
2103 .op_name
= "OP_CLOSE",
2104 .op_rsize_bop
= (nfsd4op_rsize
)nfsd4_status_stateid_rsize
,
2105 .op_get_currentstateid
= (stateid_getter
)nfsd4_get_closestateid
,
2106 .op_set_currentstateid
= (stateid_setter
)nfsd4_set_closestateid
,
2109 .op_func
= (nfsd4op_func
)nfsd4_commit
,
2110 .op_flags
= OP_MODIFIES_SOMETHING
,
2111 .op_name
= "OP_COMMIT",
2112 .op_rsize_bop
= (nfsd4op_rsize
)nfsd4_commit_rsize
,
2115 .op_func
= (nfsd4op_func
)nfsd4_create
,
2116 .op_flags
= OP_MODIFIES_SOMETHING
| OP_CACHEME
| OP_CLEAR_STATEID
,
2117 .op_name
= "OP_CREATE",
2118 .op_rsize_bop
= (nfsd4op_rsize
)nfsd4_create_rsize
,
2120 [OP_DELEGRETURN
] = {
2121 .op_func
= (nfsd4op_func
)nfsd4_delegreturn
,
2122 .op_flags
= OP_MODIFIES_SOMETHING
,
2123 .op_name
= "OP_DELEGRETURN",
2124 .op_rsize_bop
= nfsd4_only_status_rsize
,
2125 .op_get_currentstateid
= (stateid_getter
)nfsd4_get_delegreturnstateid
,
2128 .op_func
= (nfsd4op_func
)nfsd4_getattr
,
2129 .op_flags
= ALLOWED_ON_ABSENT_FS
,
2130 .op_rsize_bop
= nfsd4_getattr_rsize
,
2131 .op_name
= "OP_GETATTR",
2134 .op_func
= (nfsd4op_func
)nfsd4_getfh
,
2135 .op_name
= "OP_GETFH",
2136 .op_rsize_bop
= (nfsd4op_rsize
)nfsd4_getfh_rsize
,
2139 .op_func
= (nfsd4op_func
)nfsd4_link
,
2140 .op_flags
= ALLOWED_ON_ABSENT_FS
| OP_MODIFIES_SOMETHING
2142 .op_name
= "OP_LINK",
2143 .op_rsize_bop
= (nfsd4op_rsize
)nfsd4_link_rsize
,
2146 .op_func
= (nfsd4op_func
)nfsd4_lock
,
2147 .op_flags
= OP_MODIFIES_SOMETHING
,
2148 .op_name
= "OP_LOCK",
2149 .op_rsize_bop
= (nfsd4op_rsize
)nfsd4_lock_rsize
,
2150 .op_set_currentstateid
= (stateid_setter
)nfsd4_set_lockstateid
,
2153 .op_func
= (nfsd4op_func
)nfsd4_lockt
,
2154 .op_name
= "OP_LOCKT",
2155 .op_rsize_bop
= (nfsd4op_rsize
)nfsd4_lock_rsize
,
2158 .op_func
= (nfsd4op_func
)nfsd4_locku
,
2159 .op_flags
= OP_MODIFIES_SOMETHING
,
2160 .op_name
= "OP_LOCKU",
2161 .op_rsize_bop
= (nfsd4op_rsize
)nfsd4_status_stateid_rsize
,
2162 .op_get_currentstateid
= (stateid_getter
)nfsd4_get_lockustateid
,
2165 .op_func
= (nfsd4op_func
)nfsd4_lookup
,
2166 .op_flags
= OP_HANDLES_WRONGSEC
| OP_CLEAR_STATEID
,
2167 .op_name
= "OP_LOOKUP",
2168 .op_rsize_bop
= (nfsd4op_rsize
)nfsd4_only_status_rsize
,
2171 .op_func
= (nfsd4op_func
)nfsd4_lookupp
,
2172 .op_flags
= OP_HANDLES_WRONGSEC
| OP_CLEAR_STATEID
,
2173 .op_name
= "OP_LOOKUPP",
2174 .op_rsize_bop
= (nfsd4op_rsize
)nfsd4_only_status_rsize
,
2177 .op_func
= (nfsd4op_func
)nfsd4_nverify
,
2178 .op_name
= "OP_NVERIFY",
2179 .op_rsize_bop
= (nfsd4op_rsize
)nfsd4_only_status_rsize
,
2182 .op_func
= (nfsd4op_func
)nfsd4_open
,
2183 .op_flags
= OP_HANDLES_WRONGSEC
| OP_MODIFIES_SOMETHING
,
2184 .op_name
= "OP_OPEN",
2185 .op_rsize_bop
= (nfsd4op_rsize
)nfsd4_open_rsize
,
2186 .op_set_currentstateid
= (stateid_setter
)nfsd4_set_openstateid
,
2188 [OP_OPEN_CONFIRM
] = {
2189 .op_func
= (nfsd4op_func
)nfsd4_open_confirm
,
2190 .op_flags
= OP_MODIFIES_SOMETHING
,
2191 .op_name
= "OP_OPEN_CONFIRM",
2192 .op_rsize_bop
= (nfsd4op_rsize
)nfsd4_status_stateid_rsize
,
2194 [OP_OPEN_DOWNGRADE
] = {
2195 .op_func
= (nfsd4op_func
)nfsd4_open_downgrade
,
2196 .op_flags
= OP_MODIFIES_SOMETHING
,
2197 .op_name
= "OP_OPEN_DOWNGRADE",
2198 .op_rsize_bop
= (nfsd4op_rsize
)nfsd4_status_stateid_rsize
,
2199 .op_get_currentstateid
= (stateid_getter
)nfsd4_get_opendowngradestateid
,
2200 .op_set_currentstateid
= (stateid_setter
)nfsd4_set_opendowngradestateid
,
2203 .op_func
= (nfsd4op_func
)nfsd4_putfh
,
2204 .op_flags
= ALLOWED_WITHOUT_FH
| ALLOWED_ON_ABSENT_FS
2205 | OP_IS_PUTFH_LIKE
| OP_CLEAR_STATEID
,
2206 .op_name
= "OP_PUTFH",
2207 .op_rsize_bop
= (nfsd4op_rsize
)nfsd4_only_status_rsize
,
2210 .op_func
= (nfsd4op_func
)nfsd4_putrootfh
,
2211 .op_flags
= ALLOWED_WITHOUT_FH
| ALLOWED_ON_ABSENT_FS
2212 | OP_IS_PUTFH_LIKE
| OP_CLEAR_STATEID
,
2213 .op_name
= "OP_PUTPUBFH",
2214 .op_rsize_bop
= (nfsd4op_rsize
)nfsd4_only_status_rsize
,
2217 .op_func
= (nfsd4op_func
)nfsd4_putrootfh
,
2218 .op_flags
= ALLOWED_WITHOUT_FH
| ALLOWED_ON_ABSENT_FS
2219 | OP_IS_PUTFH_LIKE
| OP_CLEAR_STATEID
,
2220 .op_name
= "OP_PUTROOTFH",
2221 .op_rsize_bop
= (nfsd4op_rsize
)nfsd4_only_status_rsize
,
2224 .op_func
= (nfsd4op_func
)nfsd4_read
,
2225 .op_name
= "OP_READ",
2226 .op_rsize_bop
= (nfsd4op_rsize
)nfsd4_read_rsize
,
2227 .op_get_currentstateid
= (stateid_getter
)nfsd4_get_readstateid
,
2230 .op_func
= (nfsd4op_func
)nfsd4_readdir
,
2231 .op_name
= "OP_READDIR",
2232 .op_rsize_bop
= (nfsd4op_rsize
)nfsd4_readdir_rsize
,
2235 .op_func
= (nfsd4op_func
)nfsd4_readlink
,
2236 .op_name
= "OP_READLINK",
2237 .op_rsize_bop
= (nfsd4op_rsize
)nfsd4_readlink_rsize
,
2240 .op_func
= (nfsd4op_func
)nfsd4_remove
,
2241 .op_flags
= OP_MODIFIES_SOMETHING
| OP_CACHEME
,
2242 .op_name
= "OP_REMOVE",
2243 .op_rsize_bop
= (nfsd4op_rsize
)nfsd4_remove_rsize
,
2246 .op_func
= (nfsd4op_func
)nfsd4_rename
,
2247 .op_flags
= OP_MODIFIES_SOMETHING
| OP_CACHEME
,
2248 .op_name
= "OP_RENAME",
2249 .op_rsize_bop
= (nfsd4op_rsize
)nfsd4_rename_rsize
,
2252 .op_func
= (nfsd4op_func
)nfsd4_renew
,
2253 .op_flags
= ALLOWED_WITHOUT_FH
| ALLOWED_ON_ABSENT_FS
2254 | OP_MODIFIES_SOMETHING
,
2255 .op_name
= "OP_RENEW",
2256 .op_rsize_bop
= (nfsd4op_rsize
)nfsd4_only_status_rsize
,
2260 .op_func
= (nfsd4op_func
)nfsd4_restorefh
,
2261 .op_flags
= ALLOWED_WITHOUT_FH
| ALLOWED_ON_ABSENT_FS
2262 | OP_IS_PUTFH_LIKE
| OP_MODIFIES_SOMETHING
,
2263 .op_name
= "OP_RESTOREFH",
2264 .op_rsize_bop
= (nfsd4op_rsize
)nfsd4_only_status_rsize
,
2267 .op_func
= (nfsd4op_func
)nfsd4_savefh
,
2268 .op_flags
= OP_HANDLES_WRONGSEC
| OP_MODIFIES_SOMETHING
,
2269 .op_name
= "OP_SAVEFH",
2270 .op_rsize_bop
= (nfsd4op_rsize
)nfsd4_only_status_rsize
,
2273 .op_func
= (nfsd4op_func
)nfsd4_secinfo
,
2274 .op_flags
= OP_HANDLES_WRONGSEC
,
2275 .op_name
= "OP_SECINFO",
2276 .op_rsize_bop
= (nfsd4op_rsize
)nfsd4_secinfo_rsize
,
2279 .op_func
= (nfsd4op_func
)nfsd4_setattr
,
2280 .op_name
= "OP_SETATTR",
2281 .op_flags
= OP_MODIFIES_SOMETHING
| OP_CACHEME
,
2282 .op_rsize_bop
= (nfsd4op_rsize
)nfsd4_setattr_rsize
,
2283 .op_get_currentstateid
= (stateid_getter
)nfsd4_get_setattrstateid
,
2285 [OP_SETCLIENTID
] = {
2286 .op_func
= (nfsd4op_func
)nfsd4_setclientid
,
2287 .op_flags
= ALLOWED_WITHOUT_FH
| ALLOWED_ON_ABSENT_FS
2288 | OP_MODIFIES_SOMETHING
| OP_CACHEME
,
2289 .op_name
= "OP_SETCLIENTID",
2290 .op_rsize_bop
= (nfsd4op_rsize
)nfsd4_setclientid_rsize
,
2292 [OP_SETCLIENTID_CONFIRM
] = {
2293 .op_func
= (nfsd4op_func
)nfsd4_setclientid_confirm
,
2294 .op_flags
= ALLOWED_WITHOUT_FH
| ALLOWED_ON_ABSENT_FS
2295 | OP_MODIFIES_SOMETHING
| OP_CACHEME
,
2296 .op_name
= "OP_SETCLIENTID_CONFIRM",
2297 .op_rsize_bop
= (nfsd4op_rsize
)nfsd4_only_status_rsize
,
2300 .op_func
= (nfsd4op_func
)nfsd4_verify
,
2301 .op_name
= "OP_VERIFY",
2302 .op_rsize_bop
= (nfsd4op_rsize
)nfsd4_only_status_rsize
,
2305 .op_func
= (nfsd4op_func
)nfsd4_write
,
2306 .op_flags
= OP_MODIFIES_SOMETHING
| OP_CACHEME
,
2307 .op_name
= "OP_WRITE",
2308 .op_rsize_bop
= (nfsd4op_rsize
)nfsd4_write_rsize
,
2309 .op_get_currentstateid
= (stateid_getter
)nfsd4_get_writestateid
,
2311 [OP_RELEASE_LOCKOWNER
] = {
2312 .op_func
= (nfsd4op_func
)nfsd4_release_lockowner
,
2313 .op_flags
= ALLOWED_WITHOUT_FH
| ALLOWED_ON_ABSENT_FS
2314 | OP_MODIFIES_SOMETHING
,
2315 .op_name
= "OP_RELEASE_LOCKOWNER",
2316 .op_rsize_bop
= (nfsd4op_rsize
)nfsd4_only_status_rsize
,
2319 /* NFSv4.1 operations */
2320 [OP_EXCHANGE_ID
] = {
2321 .op_func
= (nfsd4op_func
)nfsd4_exchange_id
,
2322 .op_flags
= ALLOWED_WITHOUT_FH
| ALLOWED_AS_FIRST_OP
2323 | OP_MODIFIES_SOMETHING
,
2324 .op_name
= "OP_EXCHANGE_ID",
2325 .op_rsize_bop
= (nfsd4op_rsize
)nfsd4_exchange_id_rsize
,
2327 [OP_BACKCHANNEL_CTL
] = {
2328 .op_func
= (nfsd4op_func
)nfsd4_backchannel_ctl
,
2329 .op_flags
= ALLOWED_WITHOUT_FH
| OP_MODIFIES_SOMETHING
,
2330 .op_name
= "OP_BACKCHANNEL_CTL",
2331 .op_rsize_bop
= (nfsd4op_rsize
)nfsd4_only_status_rsize
,
2333 [OP_BIND_CONN_TO_SESSION
] = {
2334 .op_func
= (nfsd4op_func
)nfsd4_bind_conn_to_session
,
2335 .op_flags
= ALLOWED_WITHOUT_FH
| ALLOWED_AS_FIRST_OP
2336 | OP_MODIFIES_SOMETHING
,
2337 .op_name
= "OP_BIND_CONN_TO_SESSION",
2338 .op_rsize_bop
= (nfsd4op_rsize
)nfsd4_bind_conn_to_session_rsize
,
2340 [OP_CREATE_SESSION
] = {
2341 .op_func
= (nfsd4op_func
)nfsd4_create_session
,
2342 .op_flags
= ALLOWED_WITHOUT_FH
| ALLOWED_AS_FIRST_OP
2343 | OP_MODIFIES_SOMETHING
,
2344 .op_name
= "OP_CREATE_SESSION",
2345 .op_rsize_bop
= (nfsd4op_rsize
)nfsd4_create_session_rsize
,
2347 [OP_DESTROY_SESSION
] = {
2348 .op_func
= (nfsd4op_func
)nfsd4_destroy_session
,
2349 .op_flags
= ALLOWED_WITHOUT_FH
| ALLOWED_AS_FIRST_OP
2350 | OP_MODIFIES_SOMETHING
,
2351 .op_name
= "OP_DESTROY_SESSION",
2352 .op_rsize_bop
= (nfsd4op_rsize
)nfsd4_only_status_rsize
,
2355 .op_func
= (nfsd4op_func
)nfsd4_sequence
,
2356 .op_flags
= ALLOWED_WITHOUT_FH
| ALLOWED_AS_FIRST_OP
,
2357 .op_name
= "OP_SEQUENCE",
2358 .op_rsize_bop
= (nfsd4op_rsize
)nfsd4_sequence_rsize
,
2360 [OP_DESTROY_CLIENTID
] = {
2361 .op_func
= (nfsd4op_func
)nfsd4_destroy_clientid
,
2362 .op_flags
= ALLOWED_WITHOUT_FH
| ALLOWED_AS_FIRST_OP
2363 | OP_MODIFIES_SOMETHING
,
2364 .op_name
= "OP_DESTROY_CLIENTID",
2365 .op_rsize_bop
= (nfsd4op_rsize
)nfsd4_only_status_rsize
,
2367 [OP_RECLAIM_COMPLETE
] = {
2368 .op_func
= (nfsd4op_func
)nfsd4_reclaim_complete
,
2369 .op_flags
= ALLOWED_WITHOUT_FH
| OP_MODIFIES_SOMETHING
,
2370 .op_name
= "OP_RECLAIM_COMPLETE",
2371 .op_rsize_bop
= (nfsd4op_rsize
)nfsd4_only_status_rsize
,
2373 [OP_SECINFO_NO_NAME
] = {
2374 .op_func
= (nfsd4op_func
)nfsd4_secinfo_no_name
,
2375 .op_flags
= OP_HANDLES_WRONGSEC
,
2376 .op_name
= "OP_SECINFO_NO_NAME",
2377 .op_rsize_bop
= (nfsd4op_rsize
)nfsd4_secinfo_rsize
,
2379 [OP_TEST_STATEID
] = {
2380 .op_func
= (nfsd4op_func
)nfsd4_test_stateid
,
2381 .op_flags
= ALLOWED_WITHOUT_FH
,
2382 .op_name
= "OP_TEST_STATEID",
2383 .op_rsize_bop
= (nfsd4op_rsize
)nfsd4_test_stateid_rsize
,
2385 [OP_FREE_STATEID
] = {
2386 .op_func
= (nfsd4op_func
)nfsd4_free_stateid
,
2387 .op_flags
= ALLOWED_WITHOUT_FH
| OP_MODIFIES_SOMETHING
,
2388 .op_name
= "OP_FREE_STATEID",
2389 .op_get_currentstateid
= (stateid_getter
)nfsd4_get_freestateid
,
2390 .op_rsize_bop
= (nfsd4op_rsize
)nfsd4_only_status_rsize
,
2392 #ifdef CONFIG_NFSD_PNFS
2393 [OP_GETDEVICEINFO
] = {
2394 .op_func
= (nfsd4op_func
)nfsd4_getdeviceinfo
,
2395 .op_flags
= ALLOWED_WITHOUT_FH
,
2396 .op_name
= "OP_GETDEVICEINFO",
2397 .op_rsize_bop
= (nfsd4op_rsize
)nfsd4_getdeviceinfo_rsize
,
2400 .op_func
= (nfsd4op_func
)nfsd4_layoutget
,
2401 .op_flags
= OP_MODIFIES_SOMETHING
,
2402 .op_name
= "OP_LAYOUTGET",
2403 .op_rsize_bop
= (nfsd4op_rsize
)nfsd4_layoutget_rsize
,
2405 [OP_LAYOUTCOMMIT
] = {
2406 .op_func
= (nfsd4op_func
)nfsd4_layoutcommit
,
2407 .op_flags
= OP_MODIFIES_SOMETHING
,
2408 .op_name
= "OP_LAYOUTCOMMIT",
2409 .op_rsize_bop
= (nfsd4op_rsize
)nfsd4_layoutcommit_rsize
,
2411 [OP_LAYOUTRETURN
] = {
2412 .op_func
= (nfsd4op_func
)nfsd4_layoutreturn
,
2413 .op_flags
= OP_MODIFIES_SOMETHING
,
2414 .op_name
= "OP_LAYOUTRETURN",
2415 .op_rsize_bop
= (nfsd4op_rsize
)nfsd4_layoutreturn_rsize
,
2417 #endif /* CONFIG_NFSD_PNFS */
2419 /* NFSv4.2 operations */
2421 .op_func
= (nfsd4op_func
)nfsd4_allocate
,
2422 .op_flags
= OP_MODIFIES_SOMETHING
| OP_CACHEME
,
2423 .op_name
= "OP_ALLOCATE",
2424 .op_rsize_bop
= (nfsd4op_rsize
)nfsd4_only_status_rsize
,
2427 .op_func
= (nfsd4op_func
)nfsd4_deallocate
,
2428 .op_flags
= OP_MODIFIES_SOMETHING
| OP_CACHEME
,
2429 .op_name
= "OP_DEALLOCATE",
2430 .op_rsize_bop
= (nfsd4op_rsize
)nfsd4_only_status_rsize
,
2433 .op_func
= (nfsd4op_func
)nfsd4_clone
,
2434 .op_flags
= OP_MODIFIES_SOMETHING
| OP_CACHEME
,
2435 .op_name
= "OP_CLONE",
2436 .op_rsize_bop
= (nfsd4op_rsize
)nfsd4_only_status_rsize
,
2439 .op_func
= (nfsd4op_func
)nfsd4_copy
,
2440 .op_flags
= OP_MODIFIES_SOMETHING
| OP_CACHEME
,
2441 .op_name
= "OP_COPY",
2442 .op_rsize_bop
= (nfsd4op_rsize
)nfsd4_copy_rsize
,
2445 .op_func
= (nfsd4op_func
)nfsd4_seek
,
2446 .op_name
= "OP_SEEK",
2447 .op_rsize_bop
= (nfsd4op_rsize
)nfsd4_seek_rsize
,
2452 * nfsd4_spo_must_allow - Determine if the compound op contains an
2453 * operation that is allowed to be sent with machine credentials
2455 * @rqstp: a pointer to the struct svc_rqst
2457 * Checks to see if the compound contains a spo_must_allow op
2458 * and confirms that it was sent with the proper machine creds.
2461 bool nfsd4_spo_must_allow(struct svc_rqst
*rqstp
)
2463 struct nfsd4_compoundres
*resp
= rqstp
->rq_resp
;
2464 struct nfsd4_compoundargs
*argp
= rqstp
->rq_argp
;
2465 struct nfsd4_op
*this = &argp
->ops
[resp
->opcnt
- 1];
2466 struct nfsd4_compound_state
*cstate
= &resp
->cstate
;
2467 struct nfs4_op_map
*allow
= &cstate
->clp
->cl_spo_must_allow
;
2470 if (!cstate
->minorversion
)
2473 if (cstate
->spo_must_allowed
== true)
2476 opiter
= resp
->opcnt
;
2477 while (opiter
< argp
->opcnt
) {
2478 this = &argp
->ops
[opiter
++];
2479 if (test_bit(this->opnum
, allow
->u
.longs
) &&
2480 cstate
->clp
->cl_mach_cred
&&
2481 nfsd4_mach_creds_match(cstate
->clp
, rqstp
)) {
2482 cstate
->spo_must_allowed
= true;
2486 cstate
->spo_must_allowed
= false;
2490 int nfsd4_max_reply(struct svc_rqst
*rqstp
, struct nfsd4_op
*op
)
2492 if (op
->opnum
== OP_ILLEGAL
)
2493 return op_encode_hdr_size
* sizeof(__be32
);
2495 BUG_ON(OPDESC(op
)->op_rsize_bop
== NULL
);
2496 return OPDESC(op
)->op_rsize_bop(rqstp
, op
);
2499 void warn_on_nonidempotent_op(struct nfsd4_op
*op
)
2501 if (OPDESC(op
)->op_flags
& OP_MODIFIES_SOMETHING
) {
2502 pr_err("unable to encode reply to nonidempotent op %d (%s)\n",
2503 op
->opnum
, nfsd4_op_name(op
->opnum
));
2508 static const char *nfsd4_op_name(unsigned opnum
)
2510 if (opnum
< ARRAY_SIZE(nfsd4_ops
))
2511 return nfsd4_ops
[opnum
].op_name
;
2512 return "unknown_operation";
2515 #define nfsd4_voidres nfsd4_voidargs
2516 struct nfsd4_voidargs
{ int dummy
; };
2518 static struct svc_procedure nfsd_procedures4
[2] = {
2520 .pc_func
= (svc_procfunc
) nfsd4_proc_null
,
2521 .pc_encode
= (kxdrproc_t
) nfs4svc_encode_voidres
,
2522 .pc_argsize
= sizeof(struct nfsd4_voidargs
),
2523 .pc_ressize
= sizeof(struct nfsd4_voidres
),
2524 .pc_cachetype
= RC_NOCACHE
,
2527 [NFSPROC4_COMPOUND
] = {
2528 .pc_func
= (svc_procfunc
) nfsd4_proc_compound
,
2529 .pc_decode
= (kxdrproc_t
) nfs4svc_decode_compoundargs
,
2530 .pc_encode
= (kxdrproc_t
) nfs4svc_encode_compoundres
,
2531 .pc_argsize
= sizeof(struct nfsd4_compoundargs
),
2532 .pc_ressize
= sizeof(struct nfsd4_compoundres
),
2533 .pc_release
= nfsd4_release_compoundargs
,
2534 .pc_cachetype
= RC_NOCACHE
,
2535 .pc_xdrressize
= NFSD_BUFSIZE
/4,
2539 struct svc_version nfsd_version4
= {
2542 .vs_proc
= nfsd_procedures4
,
2543 .vs_dispatch
= nfsd_dispatch
,
2544 .vs_xdrsize
= NFS4_SVC_XDRSIZE
,
2545 .vs_rpcb_optnl
= true,
2546 .vs_need_cong_ctrl
= true,