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/slab.h>
43 #define NFSDDBG_FACILITY NFSDDBG_PROC
45 static u32 nfsd_attrmask
[] = {
46 NFSD_WRITEABLE_ATTRS_WORD0
,
47 NFSD_WRITEABLE_ATTRS_WORD1
,
48 NFSD_WRITEABLE_ATTRS_WORD2
51 static u32 nfsd41_ex_attrmask
[] = {
52 NFSD_SUPPATTR_EXCLCREAT_WORD0
,
53 NFSD_SUPPATTR_EXCLCREAT_WORD1
,
54 NFSD_SUPPATTR_EXCLCREAT_WORD2
58 check_attr_support(struct svc_rqst
*rqstp
, struct nfsd4_compound_state
*cstate
,
59 u32
*bmval
, u32
*writable
)
61 struct dentry
*dentry
= cstate
->current_fh
.fh_dentry
;
64 * Check about attributes are supported by the NFSv4 server or not.
65 * According to spec, unsupported attributes return ERR_ATTRNOTSUPP.
67 if ((bmval
[0] & ~nfsd_suppattrs0(cstate
->minorversion
)) ||
68 (bmval
[1] & ~nfsd_suppattrs1(cstate
->minorversion
)) ||
69 (bmval
[2] & ~nfsd_suppattrs2(cstate
->minorversion
)))
70 return nfserr_attrnotsupp
;
73 * Check FATTR4_WORD0_ACL can be supported
74 * in current environment or not.
76 if (bmval
[0] & FATTR4_WORD0_ACL
) {
77 if (!IS_POSIXACL(dentry
->d_inode
))
78 return nfserr_attrnotsupp
;
82 * According to spec, read-only attributes return ERR_INVAL.
85 if ((bmval
[0] & ~writable
[0]) || (bmval
[1] & ~writable
[1]) ||
86 (bmval
[2] & ~writable
[2]))
94 nfsd4_check_open_attributes(struct svc_rqst
*rqstp
,
95 struct nfsd4_compound_state
*cstate
, struct nfsd4_open
*open
)
97 __be32 status
= nfs_ok
;
99 if (open
->op_create
== NFS4_OPEN_CREATE
) {
100 if (open
->op_createmode
== NFS4_CREATE_UNCHECKED
101 || open
->op_createmode
== NFS4_CREATE_GUARDED
)
102 status
= check_attr_support(rqstp
, cstate
,
103 open
->op_bmval
, nfsd_attrmask
);
104 else if (open
->op_createmode
== NFS4_CREATE_EXCLUSIVE4_1
)
105 status
= check_attr_support(rqstp
, cstate
,
106 open
->op_bmval
, nfsd41_ex_attrmask
);
113 is_create_with_attrs(struct nfsd4_open
*open
)
115 return open
->op_create
== NFS4_OPEN_CREATE
116 && (open
->op_createmode
== NFS4_CREATE_UNCHECKED
117 || open
->op_createmode
== NFS4_CREATE_GUARDED
118 || open
->op_createmode
== NFS4_CREATE_EXCLUSIVE4_1
);
122 * if error occurs when setting the acl, just clear the acl bit
123 * in the returned attr bitmap.
126 do_set_nfs4_acl(struct svc_rqst
*rqstp
, struct svc_fh
*fhp
,
127 struct nfs4_acl
*acl
, u32
*bmval
)
131 status
= nfsd4_set_nfs4_acl(rqstp
, fhp
, acl
);
134 * We should probably fail the whole open at this point,
135 * but we've already created the file, so it's too late;
136 * So this seems the least of evils:
138 bmval
[0] &= ~FATTR4_WORD0_ACL
;
142 fh_dup2(struct svc_fh
*dst
, struct svc_fh
*src
)
145 dget(src
->fh_dentry
);
147 cache_get(&src
->fh_export
->h
);
152 do_open_permission(struct svc_rqst
*rqstp
, struct svc_fh
*current_fh
, struct nfsd4_open
*open
, int accmode
)
156 if (open
->op_truncate
&&
157 !(open
->op_share_access
& NFS4_SHARE_ACCESS_WRITE
))
160 accmode
|= NFSD_MAY_READ_IF_EXEC
;
162 if (open
->op_share_access
& NFS4_SHARE_ACCESS_READ
)
163 accmode
|= NFSD_MAY_READ
;
164 if (open
->op_share_access
& NFS4_SHARE_ACCESS_WRITE
)
165 accmode
|= (NFSD_MAY_WRITE
| NFSD_MAY_TRUNC
);
166 if (open
->op_share_deny
& NFS4_SHARE_DENY_READ
)
167 accmode
|= NFSD_MAY_WRITE
;
169 status
= fh_verify(rqstp
, current_fh
, S_IFREG
, accmode
);
174 static __be32
nfsd_check_obj_isreg(struct svc_fh
*fh
)
176 umode_t mode
= fh
->fh_dentry
->d_inode
->i_mode
;
183 * Using err_symlink as our catch-all case may look odd; but
184 * there's no other obvious error for this case in 4.0, and we
185 * happen to know that it will cause the linux v4 client to do
186 * the right thing on attempts to open something other than a
189 return nfserr_symlink
;
193 do_open_lookup(struct svc_rqst
*rqstp
, struct svc_fh
*current_fh
, struct nfsd4_open
*open
)
199 fh_init(&resfh
, NFS4_FHSIZE
);
200 open
->op_truncate
= 0;
202 if (open
->op_create
) {
203 /* FIXME: check session persistence and pnfs flags.
204 * The nfsv4.1 spec requires the following semantics:
206 * Persistent | pNFS | Server REQUIRED | Client Allowed
207 * Reply Cache | server | |
208 * -------------+--------+-----------------+--------------------
209 * no | no | EXCLUSIVE4_1 | EXCLUSIVE4_1
211 * | | and EXCLUSIVE4 | or EXCLUSIVE4
213 * no | yes | EXCLUSIVE4_1 | EXCLUSIVE4_1
214 * yes | no | GUARDED4 | GUARDED4
215 * yes | yes | GUARDED4 | GUARDED4
219 * Note: create modes (UNCHECKED,GUARDED...) are the same
220 * in NFSv4 as in v3 except EXCLUSIVE4_1.
222 status
= do_nfsd_create(rqstp
, current_fh
, open
->op_fname
.data
,
223 open
->op_fname
.len
, &open
->op_iattr
,
224 &resfh
, open
->op_createmode
,
225 (u32
*)open
->op_verf
.data
,
226 &open
->op_truncate
, &created
);
229 * Following rfc 3530 14.2.16, use the returned bitmask
230 * to indicate which attributes we used to store the
233 if (open
->op_createmode
== NFS4_CREATE_EXCLUSIVE
&& status
== 0)
234 open
->op_bmval
[1] = (FATTR4_WORD1_TIME_ACCESS
|
235 FATTR4_WORD1_TIME_MODIFY
);
237 status
= nfsd_lookup(rqstp
, current_fh
,
238 open
->op_fname
.data
, open
->op_fname
.len
, &resfh
);
239 fh_unlock(current_fh
);
242 status
= nfsd_check_obj_isreg(&resfh
);
247 if (is_create_with_attrs(open
) && open
->op_acl
!= NULL
)
248 do_set_nfs4_acl(rqstp
, &resfh
, open
->op_acl
, open
->op_bmval
);
250 set_change_info(&open
->op_cinfo
, current_fh
);
251 fh_dup2(current_fh
, &resfh
);
253 /* set reply cache */
254 fh_copy_shallow(&open
->op_openowner
->oo_owner
.so_replay
.rp_openfh
,
257 status
= do_open_permission(rqstp
, current_fh
, open
,
266 do_open_fhandle(struct svc_rqst
*rqstp
, struct svc_fh
*current_fh
, struct nfsd4_open
*open
)
270 /* Only reclaims from previously confirmed clients are valid */
271 if ((status
= nfs4_check_open_reclaim(&open
->op_clientid
)))
274 /* We don't know the target directory, and therefore can not
275 * set the change info
278 memset(&open
->op_cinfo
, 0, sizeof(struct nfsd4_change_info
));
280 /* set replay cache */
281 fh_copy_shallow(&open
->op_openowner
->oo_owner
.so_replay
.rp_openfh
,
282 ¤t_fh
->fh_handle
);
284 open
->op_truncate
= (open
->op_iattr
.ia_valid
& ATTR_SIZE
) &&
285 (open
->op_iattr
.ia_size
== 0);
287 status
= do_open_permission(rqstp
, current_fh
, open
,
288 NFSD_MAY_OWNER_OVERRIDE
);
294 copy_clientid(clientid_t
*clid
, struct nfsd4_session
*session
)
296 struct nfsd4_sessionid
*sid
=
297 (struct nfsd4_sessionid
*)session
->se_sessionid
.data
;
299 clid
->cl_boot
= sid
->clientid
.cl_boot
;
300 clid
->cl_id
= sid
->clientid
.cl_id
;
304 nfsd4_open(struct svc_rqst
*rqstp
, struct nfsd4_compound_state
*cstate
,
305 struct nfsd4_open
*open
)
308 struct nfsd4_compoundres
*resp
;
310 dprintk("NFSD: nfsd4_open filename %.*s op_openowner %p\n",
311 (int)open
->op_fname
.len
, open
->op_fname
.data
,
314 /* This check required by spec. */
315 if (open
->op_create
&& open
->op_claim_type
!= NFS4_OPEN_CLAIM_NULL
)
320 * Before RECLAIM_COMPLETE done, server should deny new lock
322 if (nfsd4_has_session(cstate
) &&
323 !cstate
->session
->se_client
->cl_firststate
&&
324 open
->op_claim_type
!= NFS4_OPEN_CLAIM_PREVIOUS
)
327 if (nfsd4_has_session(cstate
))
328 copy_clientid(&open
->op_clientid
, cstate
->session
);
332 /* check seqid for replay. set nfs4_owner */
333 resp
= rqstp
->rq_resp
;
334 status
= nfsd4_process_open1(&resp
->cstate
, open
);
335 if (status
== nfserr_replay_me
) {
336 struct nfs4_replay
*rp
= &open
->op_openowner
->oo_owner
.so_replay
;
337 fh_put(&cstate
->current_fh
);
338 fh_copy_shallow(&cstate
->current_fh
.fh_handle
,
340 status
= fh_verify(rqstp
, &cstate
->current_fh
, 0, NFSD_MAY_NOP
);
342 dprintk("nfsd4_open: replay failed"
343 " restoring previous filehandle\n");
345 status
= nfserr_replay_me
;
350 status
= nfsd4_check_open_attributes(rqstp
, cstate
, open
);
354 /* Openowner is now set, so sequence id will get bumped. Now we need
355 * these checks before we do any creates: */
356 status
= nfserr_grace
;
357 if (locks_in_grace() && open
->op_claim_type
!= NFS4_OPEN_CLAIM_PREVIOUS
)
359 status
= nfserr_no_grace
;
360 if (!locks_in_grace() && open
->op_claim_type
== NFS4_OPEN_CLAIM_PREVIOUS
)
363 switch (open
->op_claim_type
) {
364 case NFS4_OPEN_CLAIM_DELEGATE_CUR
:
365 case NFS4_OPEN_CLAIM_NULL
:
367 * (1) set CURRENT_FH to the file being opened,
368 * creating it if necessary, (2) set open->op_cinfo,
369 * (3) set open->op_truncate if the file is to be
370 * truncated after opening, (4) do permission checking.
372 status
= do_open_lookup(rqstp
, &cstate
->current_fh
,
377 case NFS4_OPEN_CLAIM_PREVIOUS
:
378 open
->op_openowner
->oo_flags
|= NFS4_OO_CONFIRMED
;
380 * The CURRENT_FH is already set to the file being
381 * opened. (1) set open->op_cinfo, (2) set
382 * open->op_truncate if the file is to be truncated
383 * after opening, (3) do permission checking.
385 status
= do_open_fhandle(rqstp
, &cstate
->current_fh
,
390 case NFS4_OPEN_CLAIM_DELEGATE_PREV
:
391 open
->op_openowner
->oo_flags
|= NFS4_OO_CONFIRMED
;
392 dprintk("NFSD: unsupported OPEN claim type %d\n",
393 open
->op_claim_type
);
394 status
= nfserr_notsupp
;
397 dprintk("NFSD: Invalid OPEN claim type %d\n",
398 open
->op_claim_type
);
399 status
= nfserr_inval
;
403 * nfsd4_process_open2() does the actual opening of the file. If
404 * successful, it (1) truncates the file if open->op_truncate was
405 * set, (2) sets open->op_stateid, (3) sets open->op_delegation.
407 status
= nfsd4_process_open2(rqstp
, &cstate
->current_fh
, open
);
409 if (open
->op_openowner
)
410 cstate
->replay_owner
= &open
->op_openowner
->oo_owner
;
417 * filehandle-manipulating ops.
420 nfsd4_getfh(struct svc_rqst
*rqstp
, struct nfsd4_compound_state
*cstate
,
421 struct svc_fh
**getfh
)
423 if (!cstate
->current_fh
.fh_dentry
)
424 return nfserr_nofilehandle
;
426 *getfh
= &cstate
->current_fh
;
431 nfsd4_putfh(struct svc_rqst
*rqstp
, struct nfsd4_compound_state
*cstate
,
432 struct nfsd4_putfh
*putfh
)
434 fh_put(&cstate
->current_fh
);
435 cstate
->current_fh
.fh_handle
.fh_size
= putfh
->pf_fhlen
;
436 memcpy(&cstate
->current_fh
.fh_handle
.fh_base
, putfh
->pf_fhval
,
438 return fh_verify(rqstp
, &cstate
->current_fh
, 0, NFSD_MAY_BYPASS_GSS
);
442 nfsd4_putrootfh(struct svc_rqst
*rqstp
, struct nfsd4_compound_state
*cstate
,
447 fh_put(&cstate
->current_fh
);
448 status
= exp_pseudoroot(rqstp
, &cstate
->current_fh
);
453 nfsd4_restorefh(struct svc_rqst
*rqstp
, struct nfsd4_compound_state
*cstate
,
456 if (!cstate
->save_fh
.fh_dentry
)
457 return nfserr_restorefh
;
459 fh_dup2(&cstate
->current_fh
, &cstate
->save_fh
);
464 nfsd4_savefh(struct svc_rqst
*rqstp
, struct nfsd4_compound_state
*cstate
,
467 if (!cstate
->current_fh
.fh_dentry
)
468 return nfserr_nofilehandle
;
470 fh_dup2(&cstate
->save_fh
, &cstate
->current_fh
);
478 nfsd4_access(struct svc_rqst
*rqstp
, struct nfsd4_compound_state
*cstate
,
479 struct nfsd4_access
*access
)
481 if (access
->ac_req_access
& ~NFS3_ACCESS_FULL
)
484 access
->ac_resp_access
= access
->ac_req_access
;
485 return nfsd_access(rqstp
, &cstate
->current_fh
, &access
->ac_resp_access
,
486 &access
->ac_supported
);
490 nfsd4_commit(struct svc_rqst
*rqstp
, struct nfsd4_compound_state
*cstate
,
491 struct nfsd4_commit
*commit
)
493 u32
*p
= (u32
*)commit
->co_verf
.data
;
494 *p
++ = nfssvc_boot
.tv_sec
;
495 *p
++ = nfssvc_boot
.tv_usec
;
497 return nfsd_commit(rqstp
, &cstate
->current_fh
, commit
->co_offset
,
502 nfsd4_create(struct svc_rqst
*rqstp
, struct nfsd4_compound_state
*cstate
,
503 struct nfsd4_create
*create
)
509 fh_init(&resfh
, NFS4_FHSIZE
);
511 status
= fh_verify(rqstp
, &cstate
->current_fh
, S_IFDIR
,
516 status
= check_attr_support(rqstp
, cstate
, create
->cr_bmval
,
521 switch (create
->cr_type
) {
523 /* ugh! we have to null-terminate the linktext, or
524 * vfs_symlink() will choke. it is always safe to
525 * null-terminate by brute force, since at worst we
526 * will overwrite the first byte of the create namelen
527 * in the XDR buffer, which has already been extracted
530 create
->cr_linkname
[create
->cr_linklen
] = 0;
532 status
= nfsd_symlink(rqstp
, &cstate
->current_fh
,
533 create
->cr_name
, create
->cr_namelen
,
534 create
->cr_linkname
, create
->cr_linklen
,
535 &resfh
, &create
->cr_iattr
);
539 rdev
= MKDEV(create
->cr_specdata1
, create
->cr_specdata2
);
540 if (MAJOR(rdev
) != create
->cr_specdata1
||
541 MINOR(rdev
) != create
->cr_specdata2
)
543 status
= nfsd_create(rqstp
, &cstate
->current_fh
,
544 create
->cr_name
, create
->cr_namelen
,
545 &create
->cr_iattr
, S_IFBLK
, rdev
, &resfh
);
549 rdev
= MKDEV(create
->cr_specdata1
, create
->cr_specdata2
);
550 if (MAJOR(rdev
) != create
->cr_specdata1
||
551 MINOR(rdev
) != create
->cr_specdata2
)
553 status
= nfsd_create(rqstp
, &cstate
->current_fh
,
554 create
->cr_name
, create
->cr_namelen
,
555 &create
->cr_iattr
,S_IFCHR
, rdev
, &resfh
);
559 status
= nfsd_create(rqstp
, &cstate
->current_fh
,
560 create
->cr_name
, create
->cr_namelen
,
561 &create
->cr_iattr
, S_IFSOCK
, 0, &resfh
);
565 status
= nfsd_create(rqstp
, &cstate
->current_fh
,
566 create
->cr_name
, create
->cr_namelen
,
567 &create
->cr_iattr
, S_IFIFO
, 0, &resfh
);
571 create
->cr_iattr
.ia_valid
&= ~ATTR_SIZE
;
572 status
= nfsd_create(rqstp
, &cstate
->current_fh
,
573 create
->cr_name
, create
->cr_namelen
,
574 &create
->cr_iattr
, S_IFDIR
, 0, &resfh
);
578 status
= nfserr_badtype
;
584 if (create
->cr_acl
!= NULL
)
585 do_set_nfs4_acl(rqstp
, &resfh
, create
->cr_acl
,
588 fh_unlock(&cstate
->current_fh
);
589 set_change_info(&create
->cr_cinfo
, &cstate
->current_fh
);
590 fh_dup2(&cstate
->current_fh
, &resfh
);
597 nfsd4_getattr(struct svc_rqst
*rqstp
, struct nfsd4_compound_state
*cstate
,
598 struct nfsd4_getattr
*getattr
)
602 status
= fh_verify(rqstp
, &cstate
->current_fh
, 0, NFSD_MAY_NOP
);
606 if (getattr
->ga_bmval
[1] & NFSD_WRITEONLY_ATTRS_WORD1
)
609 getattr
->ga_bmval
[0] &= nfsd_suppattrs0(cstate
->minorversion
);
610 getattr
->ga_bmval
[1] &= nfsd_suppattrs1(cstate
->minorversion
);
611 getattr
->ga_bmval
[2] &= nfsd_suppattrs2(cstate
->minorversion
);
613 getattr
->ga_fhp
= &cstate
->current_fh
;
618 nfsd4_link(struct svc_rqst
*rqstp
, struct nfsd4_compound_state
*cstate
,
619 struct nfsd4_link
*link
)
621 __be32 status
= nfserr_nofilehandle
;
623 if (!cstate
->save_fh
.fh_dentry
)
625 status
= nfsd_link(rqstp
, &cstate
->current_fh
,
626 link
->li_name
, link
->li_namelen
, &cstate
->save_fh
);
628 set_change_info(&link
->li_cinfo
, &cstate
->current_fh
);
632 static __be32
nfsd4_do_lookupp(struct svc_rqst
*rqstp
, struct svc_fh
*fh
)
634 struct svc_fh tmp_fh
;
637 fh_init(&tmp_fh
, NFS4_FHSIZE
);
638 ret
= exp_pseudoroot(rqstp
, &tmp_fh
);
641 if (tmp_fh
.fh_dentry
== fh
->fh_dentry
) {
646 return nfsd_lookup(rqstp
, fh
, "..", 2, fh
);
650 nfsd4_lookupp(struct svc_rqst
*rqstp
, struct nfsd4_compound_state
*cstate
,
653 return nfsd4_do_lookupp(rqstp
, &cstate
->current_fh
);
657 nfsd4_lookup(struct svc_rqst
*rqstp
, struct nfsd4_compound_state
*cstate
,
658 struct nfsd4_lookup
*lookup
)
660 return nfsd_lookup(rqstp
, &cstate
->current_fh
,
661 lookup
->lo_name
, lookup
->lo_len
,
662 &cstate
->current_fh
);
666 nfsd4_read(struct svc_rqst
*rqstp
, struct nfsd4_compound_state
*cstate
,
667 struct nfsd4_read
*read
)
671 /* no need to check permission - this will be done in nfsd_read() */
673 read
->rd_filp
= NULL
;
674 if (read
->rd_offset
>= OFFSET_MAX
)
679 if ((status
= nfs4_preprocess_stateid_op(cstate
, &read
->rd_stateid
,
680 RD_STATE
, &read
->rd_filp
))) {
681 dprintk("NFSD: nfsd4_read: couldn't process stateid!\n");
685 get_file(read
->rd_filp
);
689 read
->rd_rqstp
= rqstp
;
690 read
->rd_fhp
= &cstate
->current_fh
;
695 nfsd4_readdir(struct svc_rqst
*rqstp
, struct nfsd4_compound_state
*cstate
,
696 struct nfsd4_readdir
*readdir
)
698 u64 cookie
= readdir
->rd_cookie
;
699 static const nfs4_verifier zeroverf
;
701 /* no need to check permission - this will be done in nfsd_readdir() */
703 if (readdir
->rd_bmval
[1] & NFSD_WRITEONLY_ATTRS_WORD1
)
706 readdir
->rd_bmval
[0] &= nfsd_suppattrs0(cstate
->minorversion
);
707 readdir
->rd_bmval
[1] &= nfsd_suppattrs1(cstate
->minorversion
);
708 readdir
->rd_bmval
[2] &= nfsd_suppattrs2(cstate
->minorversion
);
710 if ((cookie
== 1) || (cookie
== 2) ||
711 (cookie
== 0 && memcmp(readdir
->rd_verf
.data
, zeroverf
.data
, NFS4_VERIFIER_SIZE
)))
712 return nfserr_bad_cookie
;
714 readdir
->rd_rqstp
= rqstp
;
715 readdir
->rd_fhp
= &cstate
->current_fh
;
720 nfsd4_readlink(struct svc_rqst
*rqstp
, struct nfsd4_compound_state
*cstate
,
721 struct nfsd4_readlink
*readlink
)
723 readlink
->rl_rqstp
= rqstp
;
724 readlink
->rl_fhp
= &cstate
->current_fh
;
729 nfsd4_remove(struct svc_rqst
*rqstp
, struct nfsd4_compound_state
*cstate
,
730 struct nfsd4_remove
*remove
)
734 if (locks_in_grace())
736 status
= nfsd_unlink(rqstp
, &cstate
->current_fh
, 0,
737 remove
->rm_name
, remove
->rm_namelen
);
739 fh_unlock(&cstate
->current_fh
);
740 set_change_info(&remove
->rm_cinfo
, &cstate
->current_fh
);
746 nfsd4_rename(struct svc_rqst
*rqstp
, struct nfsd4_compound_state
*cstate
,
747 struct nfsd4_rename
*rename
)
749 __be32 status
= nfserr_nofilehandle
;
751 if (!cstate
->save_fh
.fh_dentry
)
753 if (locks_in_grace() && !(cstate
->save_fh
.fh_export
->ex_flags
754 & NFSEXP_NOSUBTREECHECK
))
756 status
= nfsd_rename(rqstp
, &cstate
->save_fh
, rename
->rn_sname
,
757 rename
->rn_snamelen
, &cstate
->current_fh
,
758 rename
->rn_tname
, rename
->rn_tnamelen
);
760 /* the underlying filesystem returns different error's than required
761 * by NFSv4. both save_fh and current_fh have been verified.. */
762 if (status
== nfserr_isdir
)
763 status
= nfserr_exist
;
764 else if ((status
== nfserr_notdir
) &&
765 (S_ISDIR(cstate
->save_fh
.fh_dentry
->d_inode
->i_mode
) &&
766 S_ISDIR(cstate
->current_fh
.fh_dentry
->d_inode
->i_mode
)))
767 status
= nfserr_exist
;
770 set_change_info(&rename
->rn_sinfo
, &cstate
->current_fh
);
771 set_change_info(&rename
->rn_tinfo
, &cstate
->save_fh
);
777 nfsd4_secinfo(struct svc_rqst
*rqstp
, struct nfsd4_compound_state
*cstate
,
778 struct nfsd4_secinfo
*secinfo
)
781 struct svc_export
*exp
;
782 struct dentry
*dentry
;
785 fh_init(&resfh
, NFS4_FHSIZE
);
786 err
= fh_verify(rqstp
, &cstate
->current_fh
, S_IFDIR
, NFSD_MAY_EXEC
);
789 err
= nfsd_lookup_dentry(rqstp
, &cstate
->current_fh
,
790 secinfo
->si_name
, secinfo
->si_namelen
,
794 if (dentry
->d_inode
== NULL
) {
798 secinfo
->si_exp
= exp
;
800 if (cstate
->minorversion
)
801 /* See rfc 5661 section 2.6.3.1.1.8 */
802 fh_put(&cstate
->current_fh
);
807 nfsd4_secinfo_no_name(struct svc_rqst
*rqstp
, struct nfsd4_compound_state
*cstate
,
808 struct nfsd4_secinfo_no_name
*sin
)
812 switch (sin
->sin_style
) {
813 case NFS4_SECINFO_STYLE4_CURRENT_FH
:
815 case NFS4_SECINFO_STYLE4_PARENT
:
816 err
= nfsd4_do_lookupp(rqstp
, &cstate
->current_fh
);
823 exp_get(cstate
->current_fh
.fh_export
);
824 sin
->sin_exp
= cstate
->current_fh
.fh_export
;
825 fh_put(&cstate
->current_fh
);
830 nfsd4_setattr(struct svc_rqst
*rqstp
, struct nfsd4_compound_state
*cstate
,
831 struct nfsd4_setattr
*setattr
)
833 __be32 status
= nfs_ok
;
835 if (setattr
->sa_iattr
.ia_valid
& ATTR_SIZE
) {
837 status
= nfs4_preprocess_stateid_op(cstate
,
838 &setattr
->sa_stateid
, WR_STATE
, NULL
);
841 dprintk("NFSD: nfsd4_setattr: couldn't process stateid!\n");
845 status
= mnt_want_write(cstate
->current_fh
.fh_export
->ex_path
.mnt
);
850 status
= check_attr_support(rqstp
, cstate
, setattr
->sa_bmval
,
855 if (setattr
->sa_acl
!= NULL
)
856 status
= nfsd4_set_nfs4_acl(rqstp
, &cstate
->current_fh
,
860 status
= nfsd_setattr(rqstp
, &cstate
->current_fh
, &setattr
->sa_iattr
,
863 mnt_drop_write(cstate
->current_fh
.fh_export
->ex_path
.mnt
);
868 nfsd4_write(struct svc_rqst
*rqstp
, struct nfsd4_compound_state
*cstate
,
869 struct nfsd4_write
*write
)
871 stateid_t
*stateid
= &write
->wr_stateid
;
872 struct file
*filp
= NULL
;
874 __be32 status
= nfs_ok
;
877 /* no need to check permission - this will be done in nfsd_write() */
879 if (write
->wr_offset
>= OFFSET_MAX
)
883 status
= nfs4_preprocess_stateid_op(cstate
, stateid
, WR_STATE
, &filp
);
889 dprintk("NFSD: nfsd4_write: couldn't process stateid!\n");
893 cnt
= write
->wr_buflen
;
894 write
->wr_how_written
= write
->wr_stable_how
;
895 p
= (u32
*)write
->wr_verifier
.data
;
896 *p
++ = nfssvc_boot
.tv_sec
;
897 *p
++ = nfssvc_boot
.tv_usec
;
899 status
= nfsd_write(rqstp
, &cstate
->current_fh
, filp
,
900 write
->wr_offset
, rqstp
->rq_vec
, write
->wr_vlen
,
901 &cnt
, &write
->wr_how_written
);
905 write
->wr_bytes_written
= cnt
;
910 /* This routine never returns NFS_OK! If there are no other errors, it
911 * will return NFSERR_SAME or NFSERR_NOT_SAME depending on whether the
912 * attributes matched. VERIFY is implemented by mapping NFSERR_SAME
913 * to NFS_OK after the call; NVERIFY by mapping NFSERR_NOT_SAME to NFS_OK.
916 _nfsd4_verify(struct svc_rqst
*rqstp
, struct nfsd4_compound_state
*cstate
,
917 struct nfsd4_verify
*verify
)
923 status
= fh_verify(rqstp
, &cstate
->current_fh
, 0, NFSD_MAY_NOP
);
927 status
= check_attr_support(rqstp
, cstate
, verify
->ve_bmval
, NULL
);
931 if ((verify
->ve_bmval
[0] & FATTR4_WORD0_RDATTR_ERROR
)
932 || (verify
->ve_bmval
[1] & NFSD_WRITEONLY_ATTRS_WORD1
))
934 if (verify
->ve_attrlen
& 3)
938 * bitmap_len(1) + bitmap(2) + attr_len(1) = 4
940 count
= 4 + (verify
->ve_attrlen
>> 2);
941 buf
= kmalloc(count
<< 2, GFP_KERNEL
);
943 return nfserr_jukebox
;
945 status
= nfsd4_encode_fattr(&cstate
->current_fh
,
946 cstate
->current_fh
.fh_export
,
947 cstate
->current_fh
.fh_dentry
, buf
,
948 &count
, verify
->ve_bmval
,
951 /* this means that nfsd4_encode_fattr() ran out of space */
952 if (status
== nfserr_resource
&& count
== 0)
953 status
= nfserr_not_same
;
958 p
= buf
+ 1 + ntohl(buf
[0]);
959 status
= nfserr_not_same
;
960 if (ntohl(*p
++) != verify
->ve_attrlen
)
962 if (!memcmp(p
, verify
->ve_attrval
, verify
->ve_attrlen
))
963 status
= nfserr_same
;
971 nfsd4_nverify(struct svc_rqst
*rqstp
, struct nfsd4_compound_state
*cstate
,
972 struct nfsd4_verify
*verify
)
976 status
= _nfsd4_verify(rqstp
, cstate
, verify
);
977 return status
== nfserr_not_same
? nfs_ok
: status
;
981 nfsd4_verify(struct svc_rqst
*rqstp
, struct nfsd4_compound_state
*cstate
,
982 struct nfsd4_verify
*verify
)
986 status
= _nfsd4_verify(rqstp
, cstate
, verify
);
987 return status
== nfserr_same
? nfs_ok
: status
;
994 nfsd4_proc_null(struct svc_rqst
*rqstp
, void *argp
, void *resp
)
999 static inline void nfsd4_increment_op_stats(u32 opnum
)
1001 if (opnum
>= FIRST_NFS4_OP
&& opnum
<= LAST_NFS4_OP
)
1002 nfsdstats
.nfs4_opcount
[opnum
]++;
1005 typedef __be32(*nfsd4op_func
)(struct svc_rqst
*, struct nfsd4_compound_state
*,
1007 typedef u32(*nfsd4op_rsize
)(struct svc_rqst
*, struct nfsd4_op
*op
);
1009 enum nfsd4_op_flags
{
1010 ALLOWED_WITHOUT_FH
= 1 << 0, /* No current filehandle required */
1011 ALLOWED_ON_ABSENT_FS
= 1 << 1, /* ops processed on absent fs */
1012 ALLOWED_AS_FIRST_OP
= 1 << 2, /* ops reqired first in compound */
1013 /* For rfc 5661 section 2.6.3.1.1: */
1014 OP_HANDLES_WRONGSEC
= 1 << 3,
1015 OP_IS_PUTFH_LIKE
= 1 << 4,
1016 OP_MODIFIES_SOMETHING
= 1 << 5, /* op is non-idempotent */
1019 struct nfsd4_operation
{
1020 nfsd4op_func op_func
;
1024 * We use the DRC for compounds containing non-idempotent
1025 * operations, *except* those that are 4.1-specific (since
1026 * sessions provide their own EOS), and except for stateful
1027 * operations other than setclientid and setclientid_confirm
1028 * (since sequence numbers provide EOS for open, lock, etc in
1031 bool op_cacheresult
;
1032 /* Try to get response size before operation */
1033 nfsd4op_rsize op_rsize_bop
;
1036 static struct nfsd4_operation nfsd4_ops
[];
1038 static const char *nfsd4_op_name(unsigned opnum
);
1041 * Enforce NFSv4.1 COMPOUND ordering rules:
1043 * Also note, enforced elsewhere:
1044 * - SEQUENCE other than as first op results in
1045 * NFS4ERR_SEQUENCE_POS. (Enforced in nfsd4_sequence().)
1046 * - BIND_CONN_TO_SESSION must be the only op in its compound.
1047 * (Enforced in nfsd4_bind_conn_to_session().)
1048 * - DESTROY_SESSION must be the final operation in a compound, if
1049 * sessionid's in SEQUENCE and DESTROY_SESSION are the same.
1050 * (Enforced in nfsd4_destroy_session().)
1052 static __be32
nfs41_check_op_ordering(struct nfsd4_compoundargs
*args
)
1054 struct nfsd4_op
*op
= &args
->ops
[0];
1056 /* These ordering requirements don't apply to NFSv4.0: */
1057 if (args
->minorversion
== 0)
1059 /* This is weird, but OK, not our problem: */
1060 if (args
->opcnt
== 0)
1062 if (op
->status
== nfserr_op_illegal
)
1064 if (!(nfsd4_ops
[op
->opnum
].op_flags
& ALLOWED_AS_FIRST_OP
))
1065 return nfserr_op_not_in_session
;
1066 if (op
->opnum
== OP_SEQUENCE
)
1068 if (args
->opcnt
!= 1)
1069 return nfserr_not_only_op
;
1073 static inline struct nfsd4_operation
*OPDESC(struct nfsd4_op
*op
)
1075 return &nfsd4_ops
[op
->opnum
];
1078 bool nfsd4_cache_this_op(struct nfsd4_op
*op
)
1080 return OPDESC(op
)->op_cacheresult
;
1083 static bool need_wrongsec_check(struct svc_rqst
*rqstp
)
1085 struct nfsd4_compoundres
*resp
= rqstp
->rq_resp
;
1086 struct nfsd4_compoundargs
*argp
= rqstp
->rq_argp
;
1087 struct nfsd4_op
*this = &argp
->ops
[resp
->opcnt
- 1];
1088 struct nfsd4_op
*next
= &argp
->ops
[resp
->opcnt
];
1089 struct nfsd4_operation
*thisd
;
1090 struct nfsd4_operation
*nextd
;
1092 thisd
= OPDESC(this);
1094 * Most ops check wronsec on our own; only the putfh-like ops
1095 * have special rules.
1097 if (!(thisd
->op_flags
& OP_IS_PUTFH_LIKE
))
1100 * rfc 5661 2.6.3.1.1.6: don't bother erroring out a
1101 * put-filehandle operation if we're not going to use the
1104 if (argp
->opcnt
== resp
->opcnt
)
1107 nextd
= OPDESC(next
);
1109 * Rest of 2.6.3.1.1: certain operations will return WRONGSEC
1110 * errors themselves as necessary; others should check for them
1113 return !(nextd
->op_flags
& OP_HANDLES_WRONGSEC
);
1120 nfsd4_proc_compound(struct svc_rqst
*rqstp
,
1121 struct nfsd4_compoundargs
*args
,
1122 struct nfsd4_compoundres
*resp
)
1124 struct nfsd4_op
*op
;
1125 struct nfsd4_operation
*opdesc
;
1126 struct nfsd4_compound_state
*cstate
= &resp
->cstate
;
1131 resp
->xbuf
= &rqstp
->rq_res
;
1132 resp
->p
= rqstp
->rq_res
.head
[0].iov_base
+
1133 rqstp
->rq_res
.head
[0].iov_len
;
1134 resp
->tagp
= resp
->p
;
1135 /* reserve space for: taglen, tag, and opcnt */
1136 resp
->p
+= 2 + XDR_QUADLEN(args
->taglen
);
1137 resp
->end
= rqstp
->rq_res
.head
[0].iov_base
+ PAGE_SIZE
;
1138 resp
->taglen
= args
->taglen
;
1139 resp
->tag
= args
->tag
;
1141 resp
->rqstp
= rqstp
;
1142 resp
->cstate
.minorversion
= args
->minorversion
;
1143 resp
->cstate
.replay_owner
= NULL
;
1144 resp
->cstate
.session
= NULL
;
1145 fh_init(&resp
->cstate
.current_fh
, NFS4_FHSIZE
);
1146 fh_init(&resp
->cstate
.save_fh
, NFS4_FHSIZE
);
1148 * Don't use the deferral mechanism for NFSv4; compounds make it
1149 * too hard to avoid non-idempotency problems.
1151 rqstp
->rq_usedeferral
= 0;
1154 * According to RFC3010, this takes precedence over all other errors.
1156 status
= nfserr_minor_vers_mismatch
;
1157 if (args
->minorversion
> nfsd_supported_minorversion
)
1160 status
= nfs41_check_op_ordering(args
);
1163 op
->status
= status
;
1167 while (!status
&& resp
->opcnt
< args
->opcnt
) {
1168 op
= &args
->ops
[resp
->opcnt
++];
1170 dprintk("nfsv4 compound op #%d/%d: %d (%s)\n",
1171 resp
->opcnt
, args
->opcnt
, op
->opnum
,
1172 nfsd4_op_name(op
->opnum
));
1174 * The XDR decode routines may have pre-set op->status;
1175 * for example, if there is a miscellaneous XDR error
1176 * it will be set to nfserr_bad_xdr.
1181 /* We must be able to encode a successful response to
1182 * this operation, with enough room left over to encode a
1183 * failed response to the next operation. If we don't
1184 * have enough room, fail with ERR_RESOURCE.
1186 slack_bytes
= (char *)resp
->end
- (char *)resp
->p
;
1187 if (slack_bytes
< COMPOUND_SLACK_SPACE
1188 + COMPOUND_ERR_SLACK_SPACE
) {
1189 BUG_ON(slack_bytes
< COMPOUND_ERR_SLACK_SPACE
);
1190 op
->status
= nfserr_resource
;
1194 opdesc
= OPDESC(op
);
1196 if (!cstate
->current_fh
.fh_dentry
) {
1197 if (!(opdesc
->op_flags
& ALLOWED_WITHOUT_FH
)) {
1198 op
->status
= nfserr_nofilehandle
;
1201 } else if (cstate
->current_fh
.fh_export
->ex_fslocs
.migrated
&&
1202 !(opdesc
->op_flags
& ALLOWED_ON_ABSENT_FS
)) {
1203 op
->status
= nfserr_moved
;
1207 /* If op is non-idempotent */
1208 if (opdesc
->op_flags
& OP_MODIFIES_SOMETHING
) {
1209 plen
= opdesc
->op_rsize_bop(rqstp
, op
);
1210 op
->status
= nfsd4_check_resp_size(resp
, plen
);
1216 if (opdesc
->op_func
)
1217 op
->status
= opdesc
->op_func(rqstp
, cstate
, &op
->u
);
1219 BUG_ON(op
->status
== nfs_ok
);
1221 if (!op
->status
&& need_wrongsec_check(rqstp
))
1222 op
->status
= check_nfsd_access(cstate
->current_fh
.fh_export
, rqstp
);
1225 /* Only from SEQUENCE */
1226 if (resp
->cstate
.status
== nfserr_replay_cache
) {
1227 dprintk("%s NFS4.1 replay from cache\n", __func__
);
1228 status
= op
->status
;
1231 if (op
->status
== nfserr_replay_me
) {
1232 op
->replay
= &cstate
->replay_owner
->so_replay
;
1233 nfsd4_encode_replay(resp
, op
);
1234 status
= op
->status
= op
->replay
->rp_status
;
1236 nfsd4_encode_operation(resp
, op
);
1237 status
= op
->status
;
1240 dprintk("nfsv4 compound op %p opcnt %d #%d: %d: status %d\n",
1241 args
->ops
, args
->opcnt
, resp
->opcnt
, op
->opnum
,
1242 be32_to_cpu(status
));
1244 if (cstate
->replay_owner
) {
1245 nfs4_unlock_state();
1246 cstate
->replay_owner
= NULL
;
1248 /* XXX Ugh, we need to get rid of this kind of special case: */
1249 if (op
->opnum
== OP_READ
&& op
->u
.read
.rd_filp
)
1250 fput(op
->u
.read
.rd_filp
);
1252 nfsd4_increment_op_stats(op
->opnum
);
1255 resp
->cstate
.status
= status
;
1256 fh_put(&resp
->cstate
.current_fh
);
1257 fh_put(&resp
->cstate
.save_fh
);
1258 BUG_ON(resp
->cstate
.replay_owner
);
1260 /* Reset deferral mechanism for RPC deferrals */
1261 rqstp
->rq_usedeferral
= 1;
1262 dprintk("nfsv4 compound returned %d\n", ntohl(status
));
1266 #define op_encode_hdr_size (2)
1267 #define op_encode_stateid_maxsz (XDR_QUADLEN(NFS4_STATEID_SIZE))
1268 #define op_encode_verifier_maxsz (XDR_QUADLEN(NFS4_VERIFIER_SIZE))
1269 #define op_encode_change_info_maxsz (5)
1270 #define nfs4_fattr_bitmap_maxsz (4)
1272 #define op_encode_lockowner_maxsz (1 + XDR_QUADLEN(IDMAP_NAMESZ))
1273 #define op_encode_lock_denied_maxsz (8 + op_encode_lockowner_maxsz)
1275 #define nfs4_owner_maxsz (1 + XDR_QUADLEN(IDMAP_NAMESZ))
1277 #define op_encode_ace_maxsz (3 + nfs4_owner_maxsz)
1278 #define op_encode_delegation_maxsz (1 + op_encode_stateid_maxsz + 1 + \
1279 op_encode_ace_maxsz)
1281 #define op_encode_channel_attrs_maxsz (6 + 1 + 1)
1283 static inline u32
nfsd4_only_status_rsize(struct svc_rqst
*rqstp
, struct nfsd4_op
*op
)
1285 return (op_encode_hdr_size
) * sizeof(__be32
);
1288 static inline u32
nfsd4_status_stateid_rsize(struct svc_rqst
*rqstp
, struct nfsd4_op
*op
)
1290 return (op_encode_hdr_size
+ op_encode_stateid_maxsz
)* sizeof(__be32
);
1293 static inline u32
nfsd4_commit_rsize(struct svc_rqst
*rqstp
, struct nfsd4_op
*op
)
1295 return (op_encode_hdr_size
+ op_encode_verifier_maxsz
) * sizeof(__be32
);
1298 static inline u32
nfsd4_create_rsize(struct svc_rqst
*rqstp
, struct nfsd4_op
*op
)
1300 return (op_encode_hdr_size
+ op_encode_change_info_maxsz
1301 + nfs4_fattr_bitmap_maxsz
) * sizeof(__be32
);
1304 static inline u32
nfsd4_link_rsize(struct svc_rqst
*rqstp
, struct nfsd4_op
*op
)
1306 return (op_encode_hdr_size
+ op_encode_change_info_maxsz
)
1310 static inline u32
nfsd4_lock_rsize(struct svc_rqst
*rqstp
, struct nfsd4_op
*op
)
1312 return (op_encode_hdr_size
+ op_encode_lock_denied_maxsz
)
1316 static inline u32
nfsd4_open_rsize(struct svc_rqst
*rqstp
, struct nfsd4_op
*op
)
1318 return (op_encode_hdr_size
+ op_encode_stateid_maxsz
1319 + op_encode_change_info_maxsz
+ 1
1320 + nfs4_fattr_bitmap_maxsz
1321 + op_encode_delegation_maxsz
) * sizeof(__be32
);
1324 static inline u32
nfsd4_read_rsize(struct svc_rqst
*rqstp
, struct nfsd4_op
*op
)
1326 u32 maxcount
= 0, rlen
= 0;
1328 maxcount
= svc_max_payload(rqstp
);
1329 rlen
= op
->u
.read
.rd_length
;
1331 if (rlen
> maxcount
)
1334 return (op_encode_hdr_size
+ 2) * sizeof(__be32
) + rlen
;
1337 static inline u32
nfsd4_readdir_rsize(struct svc_rqst
*rqstp
, struct nfsd4_op
*op
)
1339 u32 rlen
= op
->u
.readdir
.rd_maxcount
;
1341 if (rlen
> PAGE_SIZE
)
1344 return (op_encode_hdr_size
+ op_encode_verifier_maxsz
)
1345 * sizeof(__be32
) + rlen
;
1348 static inline u32
nfsd4_remove_rsize(struct svc_rqst
*rqstp
, struct nfsd4_op
*op
)
1350 return (op_encode_hdr_size
+ op_encode_change_info_maxsz
)
1354 static inline u32
nfsd4_rename_rsize(struct svc_rqst
*rqstp
, struct nfsd4_op
*op
)
1356 return (op_encode_hdr_size
+ op_encode_change_info_maxsz
1357 + op_encode_change_info_maxsz
) * sizeof(__be32
);
1360 static inline u32
nfsd4_setattr_rsize(struct svc_rqst
*rqstp
, struct nfsd4_op
*op
)
1362 return (op_encode_hdr_size
+ nfs4_fattr_bitmap_maxsz
) * sizeof(__be32
);
1365 static inline u32
nfsd4_setclientid_rsize(struct svc_rqst
*rqstp
, struct nfsd4_op
*op
)
1367 return (op_encode_hdr_size
+ 2 + 1024) * sizeof(__be32
);
1370 static inline u32
nfsd4_write_rsize(struct svc_rqst
*rqstp
, struct nfsd4_op
*op
)
1372 return (op_encode_hdr_size
+ op_encode_verifier_maxsz
) * sizeof(__be32
);
1375 static inline u32
nfsd4_exchange_id_rsize(struct svc_rqst
*rqstp
, struct nfsd4_op
*op
)
1377 return (op_encode_hdr_size
+ 2 + 1 + /* eir_clientid, eir_sequenceid */\
1378 1 + 1 + 0 + /* eir_flags, spr_how, SP4_NONE (for now) */\
1379 2 + /*eir_server_owner.so_minor_id */\
1380 /* eir_server_owner.so_major_id<> */\
1381 XDR_QUADLEN(NFS4_OPAQUE_LIMIT
) + 1 +\
1382 /* eir_server_scope<> */\
1383 XDR_QUADLEN(NFS4_OPAQUE_LIMIT
) + 1 +\
1384 1 + /* eir_server_impl_id array length */\
1385 0 /* ignored eir_server_impl_id contents */) * sizeof(__be32
);
1388 static inline u32
nfsd4_bind_conn_to_session_rsize(struct svc_rqst
*rqstp
, struct nfsd4_op
*op
)
1390 return (op_encode_hdr_size
+ \
1391 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN
) + /* bctsr_sessid */\
1392 2 /* bctsr_dir, use_conn_in_rdma_mode */) * sizeof(__be32
);
1395 static inline u32
nfsd4_create_session_rsize(struct svc_rqst
*rqstp
, struct nfsd4_op
*op
)
1397 return (op_encode_hdr_size
+ \
1398 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN
) + /* sessionid */\
1399 2 + /* csr_sequence, csr_flags */\
1400 op_encode_channel_attrs_maxsz
+ \
1401 op_encode_channel_attrs_maxsz
) * sizeof(__be32
);
1404 static struct nfsd4_operation nfsd4_ops
[] = {
1406 .op_func
= (nfsd4op_func
)nfsd4_access
,
1407 .op_name
= "OP_ACCESS",
1410 .op_func
= (nfsd4op_func
)nfsd4_close
,
1411 .op_flags
= OP_MODIFIES_SOMETHING
,
1412 .op_name
= "OP_CLOSE",
1413 .op_rsize_bop
= (nfsd4op_rsize
)nfsd4_status_stateid_rsize
,
1416 .op_func
= (nfsd4op_func
)nfsd4_commit
,
1417 .op_flags
= OP_MODIFIES_SOMETHING
,
1418 .op_name
= "OP_COMMIT",
1419 .op_rsize_bop
= (nfsd4op_rsize
)nfsd4_commit_rsize
,
1422 .op_func
= (nfsd4op_func
)nfsd4_create
,
1423 .op_flags
= OP_MODIFIES_SOMETHING
,
1424 .op_name
= "OP_CREATE",
1425 .op_cacheresult
= true,
1426 .op_rsize_bop
= (nfsd4op_rsize
)nfsd4_create_rsize
,
1428 [OP_DELEGRETURN
] = {
1429 .op_func
= (nfsd4op_func
)nfsd4_delegreturn
,
1430 .op_flags
= OP_MODIFIES_SOMETHING
,
1431 .op_name
= "OP_DELEGRETURN",
1432 .op_rsize_bop
= nfsd4_only_status_rsize
,
1435 .op_func
= (nfsd4op_func
)nfsd4_getattr
,
1436 .op_flags
= ALLOWED_ON_ABSENT_FS
,
1437 .op_name
= "OP_GETATTR",
1440 .op_func
= (nfsd4op_func
)nfsd4_getfh
,
1441 .op_name
= "OP_GETFH",
1444 .op_func
= (nfsd4op_func
)nfsd4_link
,
1445 .op_flags
= ALLOWED_ON_ABSENT_FS
| OP_MODIFIES_SOMETHING
,
1446 .op_name
= "OP_LINK",
1447 .op_cacheresult
= true,
1448 .op_rsize_bop
= (nfsd4op_rsize
)nfsd4_link_rsize
,
1451 .op_func
= (nfsd4op_func
)nfsd4_lock
,
1452 .op_flags
= OP_MODIFIES_SOMETHING
,
1453 .op_name
= "OP_LOCK",
1454 .op_rsize_bop
= (nfsd4op_rsize
)nfsd4_lock_rsize
,
1457 .op_func
= (nfsd4op_func
)nfsd4_lockt
,
1458 .op_name
= "OP_LOCKT",
1461 .op_func
= (nfsd4op_func
)nfsd4_locku
,
1462 .op_flags
= OP_MODIFIES_SOMETHING
,
1463 .op_name
= "OP_LOCKU",
1464 .op_rsize_bop
= (nfsd4op_rsize
)nfsd4_status_stateid_rsize
,
1467 .op_func
= (nfsd4op_func
)nfsd4_lookup
,
1468 .op_flags
= OP_HANDLES_WRONGSEC
,
1469 .op_name
= "OP_LOOKUP",
1472 .op_func
= (nfsd4op_func
)nfsd4_lookupp
,
1473 .op_flags
= OP_HANDLES_WRONGSEC
,
1474 .op_name
= "OP_LOOKUPP",
1477 .op_func
= (nfsd4op_func
)nfsd4_nverify
,
1478 .op_name
= "OP_NVERIFY",
1481 .op_func
= (nfsd4op_func
)nfsd4_open
,
1482 .op_flags
= OP_HANDLES_WRONGSEC
| OP_MODIFIES_SOMETHING
,
1483 .op_name
= "OP_OPEN",
1484 .op_rsize_bop
= (nfsd4op_rsize
)nfsd4_open_rsize
,
1486 [OP_OPEN_CONFIRM
] = {
1487 .op_func
= (nfsd4op_func
)nfsd4_open_confirm
,
1488 .op_flags
= OP_MODIFIES_SOMETHING
,
1489 .op_name
= "OP_OPEN_CONFIRM",
1490 .op_rsize_bop
= (nfsd4op_rsize
)nfsd4_status_stateid_rsize
,
1492 [OP_OPEN_DOWNGRADE
] = {
1493 .op_func
= (nfsd4op_func
)nfsd4_open_downgrade
,
1494 .op_flags
= OP_MODIFIES_SOMETHING
,
1495 .op_name
= "OP_OPEN_DOWNGRADE",
1496 .op_rsize_bop
= (nfsd4op_rsize
)nfsd4_status_stateid_rsize
,
1499 .op_func
= (nfsd4op_func
)nfsd4_putfh
,
1500 .op_flags
= ALLOWED_WITHOUT_FH
| ALLOWED_ON_ABSENT_FS
1501 | OP_IS_PUTFH_LIKE
| OP_MODIFIES_SOMETHING
,
1502 .op_name
= "OP_PUTFH",
1503 .op_rsize_bop
= (nfsd4op_rsize
)nfsd4_only_status_rsize
,
1506 .op_func
= (nfsd4op_func
)nfsd4_putrootfh
,
1507 .op_flags
= ALLOWED_WITHOUT_FH
| ALLOWED_ON_ABSENT_FS
1508 | OP_IS_PUTFH_LIKE
| OP_MODIFIES_SOMETHING
,
1509 .op_name
= "OP_PUTPUBFH",
1510 .op_rsize_bop
= (nfsd4op_rsize
)nfsd4_only_status_rsize
,
1513 .op_func
= (nfsd4op_func
)nfsd4_putrootfh
,
1514 .op_flags
= ALLOWED_WITHOUT_FH
| ALLOWED_ON_ABSENT_FS
1515 | OP_IS_PUTFH_LIKE
| OP_MODIFIES_SOMETHING
,
1516 .op_name
= "OP_PUTROOTFH",
1517 .op_rsize_bop
= (nfsd4op_rsize
)nfsd4_only_status_rsize
,
1520 .op_func
= (nfsd4op_func
)nfsd4_read
,
1521 .op_flags
= OP_MODIFIES_SOMETHING
,
1522 .op_name
= "OP_READ",
1523 .op_rsize_bop
= (nfsd4op_rsize
)nfsd4_read_rsize
,
1526 .op_func
= (nfsd4op_func
)nfsd4_readdir
,
1527 .op_flags
= OP_MODIFIES_SOMETHING
,
1528 .op_name
= "OP_READDIR",
1529 .op_rsize_bop
= (nfsd4op_rsize
)nfsd4_readdir_rsize
,
1532 .op_func
= (nfsd4op_func
)nfsd4_readlink
,
1533 .op_name
= "OP_READLINK",
1536 .op_func
= (nfsd4op_func
)nfsd4_remove
,
1537 .op_flags
= OP_MODIFIES_SOMETHING
,
1538 .op_name
= "OP_REMOVE",
1539 .op_cacheresult
= true,
1540 .op_rsize_bop
= (nfsd4op_rsize
)nfsd4_remove_rsize
,
1543 .op_func
= (nfsd4op_func
)nfsd4_rename
,
1544 .op_flags
= OP_MODIFIES_SOMETHING
,
1545 .op_name
= "OP_RENAME",
1546 .op_cacheresult
= true,
1547 .op_rsize_bop
= (nfsd4op_rsize
)nfsd4_rename_rsize
,
1550 .op_func
= (nfsd4op_func
)nfsd4_renew
,
1551 .op_flags
= ALLOWED_WITHOUT_FH
| ALLOWED_ON_ABSENT_FS
1552 | OP_MODIFIES_SOMETHING
,
1553 .op_name
= "OP_RENEW",
1554 .op_rsize_bop
= (nfsd4op_rsize
)nfsd4_only_status_rsize
,
1558 .op_func
= (nfsd4op_func
)nfsd4_restorefh
,
1559 .op_flags
= ALLOWED_WITHOUT_FH
| ALLOWED_ON_ABSENT_FS
1560 | OP_IS_PUTFH_LIKE
| OP_MODIFIES_SOMETHING
,
1561 .op_name
= "OP_RESTOREFH",
1562 .op_rsize_bop
= (nfsd4op_rsize
)nfsd4_only_status_rsize
,
1565 .op_func
= (nfsd4op_func
)nfsd4_savefh
,
1566 .op_flags
= OP_HANDLES_WRONGSEC
| OP_MODIFIES_SOMETHING
,
1567 .op_name
= "OP_SAVEFH",
1568 .op_rsize_bop
= (nfsd4op_rsize
)nfsd4_only_status_rsize
,
1571 .op_func
= (nfsd4op_func
)nfsd4_secinfo
,
1572 .op_flags
= OP_HANDLES_WRONGSEC
,
1573 .op_name
= "OP_SECINFO",
1576 .op_func
= (nfsd4op_func
)nfsd4_setattr
,
1577 .op_name
= "OP_SETATTR",
1578 .op_flags
= OP_MODIFIES_SOMETHING
,
1579 .op_cacheresult
= true,
1580 .op_rsize_bop
= (nfsd4op_rsize
)nfsd4_setattr_rsize
,
1582 [OP_SETCLIENTID
] = {
1583 .op_func
= (nfsd4op_func
)nfsd4_setclientid
,
1584 .op_flags
= ALLOWED_WITHOUT_FH
| ALLOWED_ON_ABSENT_FS
1585 | OP_MODIFIES_SOMETHING
,
1586 .op_name
= "OP_SETCLIENTID",
1587 .op_cacheresult
= true,
1588 .op_rsize_bop
= (nfsd4op_rsize
)nfsd4_setclientid_rsize
,
1590 [OP_SETCLIENTID_CONFIRM
] = {
1591 .op_func
= (nfsd4op_func
)nfsd4_setclientid_confirm
,
1592 .op_flags
= ALLOWED_WITHOUT_FH
| ALLOWED_ON_ABSENT_FS
1593 | OP_MODIFIES_SOMETHING
,
1594 .op_name
= "OP_SETCLIENTID_CONFIRM",
1595 .op_cacheresult
= true,
1596 .op_rsize_bop
= (nfsd4op_rsize
)nfsd4_only_status_rsize
,
1599 .op_func
= (nfsd4op_func
)nfsd4_verify
,
1600 .op_name
= "OP_VERIFY",
1603 .op_func
= (nfsd4op_func
)nfsd4_write
,
1604 .op_flags
= OP_MODIFIES_SOMETHING
,
1605 .op_name
= "OP_WRITE",
1606 .op_cacheresult
= true,
1607 .op_rsize_bop
= (nfsd4op_rsize
)nfsd4_write_rsize
,
1609 [OP_RELEASE_LOCKOWNER
] = {
1610 .op_func
= (nfsd4op_func
)nfsd4_release_lockowner
,
1611 .op_flags
= ALLOWED_WITHOUT_FH
| ALLOWED_ON_ABSENT_FS
1612 | OP_MODIFIES_SOMETHING
,
1613 .op_name
= "OP_RELEASE_LOCKOWNER",
1614 .op_rsize_bop
= (nfsd4op_rsize
)nfsd4_only_status_rsize
,
1617 /* NFSv4.1 operations */
1618 [OP_EXCHANGE_ID
] = {
1619 .op_func
= (nfsd4op_func
)nfsd4_exchange_id
,
1620 .op_flags
= ALLOWED_WITHOUT_FH
| ALLOWED_AS_FIRST_OP
1621 | OP_MODIFIES_SOMETHING
,
1622 .op_name
= "OP_EXCHANGE_ID",
1623 .op_rsize_bop
= (nfsd4op_rsize
)nfsd4_exchange_id_rsize
,
1625 [OP_BIND_CONN_TO_SESSION
] = {
1626 .op_func
= (nfsd4op_func
)nfsd4_bind_conn_to_session
,
1627 .op_flags
= ALLOWED_WITHOUT_FH
| ALLOWED_AS_FIRST_OP
1628 | OP_MODIFIES_SOMETHING
,
1629 .op_name
= "OP_BIND_CONN_TO_SESSION",
1630 .op_rsize_bop
= (nfsd4op_rsize
)nfsd4_bind_conn_to_session_rsize
,
1632 [OP_CREATE_SESSION
] = {
1633 .op_func
= (nfsd4op_func
)nfsd4_create_session
,
1634 .op_flags
= ALLOWED_WITHOUT_FH
| ALLOWED_AS_FIRST_OP
1635 | OP_MODIFIES_SOMETHING
,
1636 .op_name
= "OP_CREATE_SESSION",
1637 .op_rsize_bop
= (nfsd4op_rsize
)nfsd4_create_session_rsize
,
1639 [OP_DESTROY_SESSION
] = {
1640 .op_func
= (nfsd4op_func
)nfsd4_destroy_session
,
1641 .op_flags
= ALLOWED_WITHOUT_FH
| ALLOWED_AS_FIRST_OP
1642 | OP_MODIFIES_SOMETHING
,
1643 .op_name
= "OP_DESTROY_SESSION",
1644 .op_rsize_bop
= (nfsd4op_rsize
)nfsd4_only_status_rsize
,
1647 .op_func
= (nfsd4op_func
)nfsd4_sequence
,
1648 .op_flags
= ALLOWED_WITHOUT_FH
| ALLOWED_AS_FIRST_OP
,
1649 .op_name
= "OP_SEQUENCE",
1651 [OP_DESTROY_CLIENTID
] = {
1653 .op_flags
= ALLOWED_WITHOUT_FH
| ALLOWED_AS_FIRST_OP
1654 | OP_MODIFIES_SOMETHING
,
1655 .op_name
= "OP_DESTROY_CLIENTID",
1656 .op_rsize_bop
= (nfsd4op_rsize
)nfsd4_only_status_rsize
,
1658 [OP_RECLAIM_COMPLETE
] = {
1659 .op_func
= (nfsd4op_func
)nfsd4_reclaim_complete
,
1660 .op_flags
= ALLOWED_WITHOUT_FH
| OP_MODIFIES_SOMETHING
,
1661 .op_name
= "OP_RECLAIM_COMPLETE",
1662 .op_rsize_bop
= (nfsd4op_rsize
)nfsd4_only_status_rsize
,
1664 [OP_SECINFO_NO_NAME
] = {
1665 .op_func
= (nfsd4op_func
)nfsd4_secinfo_no_name
,
1666 .op_flags
= OP_HANDLES_WRONGSEC
,
1667 .op_name
= "OP_SECINFO_NO_NAME",
1669 [OP_TEST_STATEID
] = {
1670 .op_func
= (nfsd4op_func
)nfsd4_test_stateid
,
1671 .op_flags
= ALLOWED_WITHOUT_FH
,
1672 .op_name
= "OP_TEST_STATEID",
1674 [OP_FREE_STATEID
] = {
1675 .op_func
= (nfsd4op_func
)nfsd4_free_stateid
,
1676 .op_flags
= ALLOWED_WITHOUT_FH
| OP_MODIFIES_SOMETHING
,
1677 .op_name
= "OP_FREE_STATEID",
1678 .op_rsize_bop
= (nfsd4op_rsize
)nfsd4_only_status_rsize
,
1682 static const char *nfsd4_op_name(unsigned opnum
)
1684 if (opnum
< ARRAY_SIZE(nfsd4_ops
))
1685 return nfsd4_ops
[opnum
].op_name
;
1686 return "unknown_operation";
1689 #define nfsd4_voidres nfsd4_voidargs
1690 struct nfsd4_voidargs
{ int dummy
; };
1692 static struct svc_procedure nfsd_procedures4
[2] = {
1694 .pc_func
= (svc_procfunc
) nfsd4_proc_null
,
1695 .pc_encode
= (kxdrproc_t
) nfs4svc_encode_voidres
,
1696 .pc_argsize
= sizeof(struct nfsd4_voidargs
),
1697 .pc_ressize
= sizeof(struct nfsd4_voidres
),
1698 .pc_cachetype
= RC_NOCACHE
,
1701 [NFSPROC4_COMPOUND
] = {
1702 .pc_func
= (svc_procfunc
) nfsd4_proc_compound
,
1703 .pc_decode
= (kxdrproc_t
) nfs4svc_decode_compoundargs
,
1704 .pc_encode
= (kxdrproc_t
) nfs4svc_encode_compoundres
,
1705 .pc_argsize
= sizeof(struct nfsd4_compoundargs
),
1706 .pc_ressize
= sizeof(struct nfsd4_compoundres
),
1707 .pc_release
= nfsd4_release_compoundargs
,
1708 .pc_cachetype
= RC_NOCACHE
,
1709 .pc_xdrressize
= NFSD_BUFSIZE
/4,
1713 struct svc_version nfsd_version4
= {
1716 .vs_proc
= nfsd_procedures4
,
1717 .vs_dispatch
= nfsd_dispatch
,
1718 .vs_xdrsize
= NFS4_SVC_XDRSIZE
,