2 * Server-side procedures for NFSv4.
4 * Copyright (c) 2002 The Regents of the University of Michigan.
7 * Kendrick Smith <kmsmith@umich.edu>
8 * Andy Adamson <andros@umich.edu>
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
14 * 1. Redistributions of source code must retain the above copyright
15 * notice, this list of conditions and the following disclaimer.
16 * 2. Redistributions in binary form must reproduce the above copyright
17 * notice, this list of conditions and the following disclaimer in the
18 * documentation and/or other materials provided with the distribution.
19 * 3. Neither the name of the University nor the names of its
20 * contributors may be used to endorse or promote products derived
21 * from this software without specific prior written permission.
23 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
24 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
25 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
26 * DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
28 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
29 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
30 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
31 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
32 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
33 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
35 #include <linux/fs_struct.h>
36 #include <linux/file.h>
37 #include <linux/falloc.h>
38 #include <linux/slab.h>
39 #include <linux/kthread.h>
40 #include <linux/sunrpc/addr.h>
41 #include <linux/nfs_ssc.h>
47 #include "current_stateid.h"
53 static bool inter_copy_offload_enable
;
54 module_param(inter_copy_offload_enable
, bool, 0644);
55 MODULE_PARM_DESC(inter_copy_offload_enable
,
56 "Enable inter server to server copy offload. Default: false");
58 #ifdef CONFIG_NFSD_V4_SECURITY_LABEL
59 #include <linux/security.h>
62 nfsd4_security_inode_setsecctx(struct svc_fh
*resfh
, struct xdr_netobj
*label
, u32
*bmval
)
64 struct inode
*inode
= d_inode(resfh
->fh_dentry
);
68 status
= security_inode_setsecctx(resfh
->fh_dentry
,
69 label
->data
, label
->len
);
74 * XXX: We should really fail the whole open, but we may
75 * already have created a new file, so it may be too
76 * late. For now this seems the least of evils:
78 bmval
[2] &= ~FATTR4_WORD2_SECURITY_LABEL
;
84 nfsd4_security_inode_setsecctx(struct svc_fh
*resfh
, struct xdr_netobj
*label
, u32
*bmval
)
88 #define NFSDDBG_FACILITY NFSDDBG_PROC
90 static u32 nfsd_attrmask
[] = {
91 NFSD_WRITEABLE_ATTRS_WORD0
,
92 NFSD_WRITEABLE_ATTRS_WORD1
,
93 NFSD_WRITEABLE_ATTRS_WORD2
96 static u32 nfsd41_ex_attrmask
[] = {
97 NFSD_SUPPATTR_EXCLCREAT_WORD0
,
98 NFSD_SUPPATTR_EXCLCREAT_WORD1
,
99 NFSD_SUPPATTR_EXCLCREAT_WORD2
103 check_attr_support(struct svc_rqst
*rqstp
, struct nfsd4_compound_state
*cstate
,
104 u32
*bmval
, u32
*writable
)
106 struct dentry
*dentry
= cstate
->current_fh
.fh_dentry
;
107 struct svc_export
*exp
= cstate
->current_fh
.fh_export
;
109 if (!nfsd_attrs_supported(cstate
->minorversion
, bmval
))
110 return nfserr_attrnotsupp
;
111 if ((bmval
[0] & FATTR4_WORD0_ACL
) && !IS_POSIXACL(d_inode(dentry
)))
112 return nfserr_attrnotsupp
;
113 if ((bmval
[2] & FATTR4_WORD2_SECURITY_LABEL
) &&
114 !(exp
->ex_flags
& NFSEXP_SECURITY_LABEL
))
115 return nfserr_attrnotsupp
;
116 if (writable
&& !bmval_is_subset(bmval
, writable
))
118 if (writable
&& (bmval
[2] & FATTR4_WORD2_MODE_UMASK
) &&
119 (bmval
[1] & FATTR4_WORD1_MODE
))
125 nfsd4_check_open_attributes(struct svc_rqst
*rqstp
,
126 struct nfsd4_compound_state
*cstate
, struct nfsd4_open
*open
)
128 __be32 status
= nfs_ok
;
130 if (open
->op_create
== NFS4_OPEN_CREATE
) {
131 if (open
->op_createmode
== NFS4_CREATE_UNCHECKED
132 || open
->op_createmode
== NFS4_CREATE_GUARDED
)
133 status
= check_attr_support(rqstp
, cstate
,
134 open
->op_bmval
, nfsd_attrmask
);
135 else if (open
->op_createmode
== NFS4_CREATE_EXCLUSIVE4_1
)
136 status
= check_attr_support(rqstp
, cstate
,
137 open
->op_bmval
, nfsd41_ex_attrmask
);
144 is_create_with_attrs(struct nfsd4_open
*open
)
146 return open
->op_create
== NFS4_OPEN_CREATE
147 && (open
->op_createmode
== NFS4_CREATE_UNCHECKED
148 || open
->op_createmode
== NFS4_CREATE_GUARDED
149 || open
->op_createmode
== NFS4_CREATE_EXCLUSIVE4_1
);
153 * if error occurs when setting the acl, just clear the acl bit
154 * in the returned attr bitmap.
157 do_set_nfs4_acl(struct svc_rqst
*rqstp
, struct svc_fh
*fhp
,
158 struct nfs4_acl
*acl
, u32
*bmval
)
162 status
= nfsd4_set_nfs4_acl(rqstp
, fhp
, acl
);
165 * We should probably fail the whole open at this point,
166 * but we've already created the file, so it's too late;
167 * So this seems the least of evils:
169 bmval
[0] &= ~FATTR4_WORD0_ACL
;
173 fh_dup2(struct svc_fh
*dst
, struct svc_fh
*src
)
176 dget(src
->fh_dentry
);
178 exp_get(src
->fh_export
);
183 do_open_permission(struct svc_rqst
*rqstp
, struct svc_fh
*current_fh
, struct nfsd4_open
*open
, int accmode
)
187 if (open
->op_truncate
&&
188 !(open
->op_share_access
& NFS4_SHARE_ACCESS_WRITE
))
191 accmode
|= NFSD_MAY_READ_IF_EXEC
;
193 if (open
->op_share_access
& NFS4_SHARE_ACCESS_READ
)
194 accmode
|= NFSD_MAY_READ
;
195 if (open
->op_share_access
& NFS4_SHARE_ACCESS_WRITE
)
196 accmode
|= (NFSD_MAY_WRITE
| NFSD_MAY_TRUNC
);
197 if (open
->op_share_deny
& NFS4_SHARE_DENY_READ
)
198 accmode
|= NFSD_MAY_WRITE
;
200 status
= fh_verify(rqstp
, current_fh
, S_IFREG
, accmode
);
205 static __be32
nfsd_check_obj_isreg(struct svc_fh
*fh
)
207 umode_t mode
= d_inode(fh
->fh_dentry
)->i_mode
;
214 * Using err_symlink as our catch-all case may look odd; but
215 * there's no other obvious error for this case in 4.0, and we
216 * happen to know that it will cause the linux v4 client to do
217 * the right thing on attempts to open something other than a
220 return nfserr_symlink
;
223 static void nfsd4_set_open_owner_reply_cache(struct nfsd4_compound_state
*cstate
, struct nfsd4_open
*open
, struct svc_fh
*resfh
)
225 if (nfsd4_has_session(cstate
))
227 fh_copy_shallow(&open
->op_openowner
->oo_owner
.so_replay
.rp_openfh
,
232 do_open_lookup(struct svc_rqst
*rqstp
, struct nfsd4_compound_state
*cstate
, struct nfsd4_open
*open
, struct svc_fh
**resfh
)
234 struct svc_fh
*current_fh
= &cstate
->current_fh
;
238 *resfh
= kmalloc(sizeof(struct svc_fh
), GFP_KERNEL
);
240 return nfserr_jukebox
;
241 fh_init(*resfh
, NFS4_FHSIZE
);
242 open
->op_truncate
= false;
244 if (open
->op_create
) {
245 /* FIXME: check session persistence and pnfs flags.
246 * The nfsv4.1 spec requires the following semantics:
248 * Persistent | pNFS | Server REQUIRED | Client Allowed
249 * Reply Cache | server | |
250 * -------------+--------+-----------------+--------------------
251 * no | no | EXCLUSIVE4_1 | EXCLUSIVE4_1
253 * | | and EXCLUSIVE4 | or EXCLUSIVE4
255 * no | yes | EXCLUSIVE4_1 | EXCLUSIVE4_1
256 * yes | no | GUARDED4 | GUARDED4
257 * yes | yes | GUARDED4 | GUARDED4
261 * Note: create modes (UNCHECKED,GUARDED...) are the same
262 * in NFSv4 as in v3 except EXCLUSIVE4_1.
264 current
->fs
->umask
= open
->op_umask
;
265 status
= do_nfsd_create(rqstp
, current_fh
, open
->op_fname
,
266 open
->op_fnamelen
, &open
->op_iattr
,
267 *resfh
, open
->op_createmode
,
268 (u32
*)open
->op_verf
.data
,
269 &open
->op_truncate
, &open
->op_created
);
270 current
->fs
->umask
= 0;
272 if (!status
&& open
->op_label
.len
)
273 nfsd4_security_inode_setsecctx(*resfh
, &open
->op_label
, open
->op_bmval
);
276 * Following rfc 3530 14.2.16, and rfc 5661 18.16.4
277 * use the returned bitmask to indicate which attributes
278 * we used to store the verifier:
280 if (nfsd_create_is_exclusive(open
->op_createmode
) && status
== 0)
281 open
->op_bmval
[1] |= (FATTR4_WORD1_TIME_ACCESS
|
282 FATTR4_WORD1_TIME_MODIFY
);
285 * Note this may exit with the parent still locked.
286 * We will hold the lock until nfsd4_open's final
287 * lookup, to prevent renames or unlinks until we've had
288 * a chance to an acquire a delegation if appropriate.
290 status
= nfsd_lookup(rqstp
, current_fh
,
291 open
->op_fname
, open
->op_fnamelen
, *resfh
);
294 status
= nfsd_check_obj_isreg(*resfh
);
298 if (is_create_with_attrs(open
) && open
->op_acl
!= NULL
)
299 do_set_nfs4_acl(rqstp
, *resfh
, open
->op_acl
, open
->op_bmval
);
301 nfsd4_set_open_owner_reply_cache(cstate
, open
, *resfh
);
302 accmode
= NFSD_MAY_NOP
;
303 if (open
->op_created
||
304 open
->op_claim_type
== NFS4_OPEN_CLAIM_DELEGATE_CUR
)
305 accmode
|= NFSD_MAY_OWNER_OVERRIDE
;
306 status
= do_open_permission(rqstp
, *resfh
, open
, accmode
);
307 set_change_info(&open
->op_cinfo
, current_fh
);
313 do_open_fhandle(struct svc_rqst
*rqstp
, struct nfsd4_compound_state
*cstate
, struct nfsd4_open
*open
)
315 struct svc_fh
*current_fh
= &cstate
->current_fh
;
319 /* We don't know the target directory, and therefore can not
320 * set the change info
323 memset(&open
->op_cinfo
, 0, sizeof(struct nfsd4_change_info
));
325 nfsd4_set_open_owner_reply_cache(cstate
, open
, current_fh
);
327 open
->op_truncate
= (open
->op_iattr
.ia_valid
& ATTR_SIZE
) &&
328 (open
->op_iattr
.ia_size
== 0);
330 * In the delegation case, the client is telling us about an
331 * open that it *already* performed locally, some time ago. We
332 * should let it succeed now if possible.
334 * In the case of a CLAIM_FH open, on the other hand, the client
335 * may be counting on us to enforce permissions (the Linux 4.1
336 * client uses this for normal opens, for example).
338 if (open
->op_claim_type
== NFS4_OPEN_CLAIM_DELEG_CUR_FH
)
339 accmode
= NFSD_MAY_OWNER_OVERRIDE
;
341 status
= do_open_permission(rqstp
, current_fh
, open
, accmode
);
347 copy_clientid(clientid_t
*clid
, struct nfsd4_session
*session
)
349 struct nfsd4_sessionid
*sid
=
350 (struct nfsd4_sessionid
*)session
->se_sessionid
.data
;
352 clid
->cl_boot
= sid
->clientid
.cl_boot
;
353 clid
->cl_id
= sid
->clientid
.cl_id
;
357 nfsd4_open(struct svc_rqst
*rqstp
, struct nfsd4_compound_state
*cstate
,
360 struct nfsd4_open
*open
= &u
->open
;
362 struct svc_fh
*resfh
= NULL
;
363 struct net
*net
= SVC_NET(rqstp
);
364 struct nfsd_net
*nn
= net_generic(net
, nfsd_net_id
);
365 bool reclaim
= false;
367 dprintk("NFSD: nfsd4_open filename %.*s op_openowner %p\n",
368 (int)open
->op_fnamelen
, open
->op_fname
,
371 /* This check required by spec. */
372 if (open
->op_create
&& open
->op_claim_type
!= NFS4_OPEN_CLAIM_NULL
)
375 open
->op_created
= false;
378 * Before RECLAIM_COMPLETE done, server should deny new lock
380 if (nfsd4_has_session(cstate
) &&
381 !test_bit(NFSD4_CLIENT_RECLAIM_COMPLETE
,
382 &cstate
->session
->se_client
->cl_flags
) &&
383 open
->op_claim_type
!= NFS4_OPEN_CLAIM_PREVIOUS
)
386 if (nfsd4_has_session(cstate
))
387 copy_clientid(&open
->op_clientid
, cstate
->session
);
389 /* check seqid for replay. set nfs4_owner */
390 status
= nfsd4_process_open1(cstate
, open
, nn
);
391 if (status
== nfserr_replay_me
) {
392 struct nfs4_replay
*rp
= &open
->op_openowner
->oo_owner
.so_replay
;
393 fh_put(&cstate
->current_fh
);
394 fh_copy_shallow(&cstate
->current_fh
.fh_handle
,
396 status
= fh_verify(rqstp
, &cstate
->current_fh
, 0, NFSD_MAY_NOP
);
398 dprintk("nfsd4_open: replay failed"
399 " restoring previous filehandle\n");
401 status
= nfserr_replay_me
;
405 if (open
->op_xdr_error
) {
406 status
= open
->op_xdr_error
;
410 status
= nfsd4_check_open_attributes(rqstp
, cstate
, open
);
414 /* Openowner is now set, so sequence id will get bumped. Now we need
415 * these checks before we do any creates: */
416 status
= nfserr_grace
;
417 if (opens_in_grace(net
) && open
->op_claim_type
!= NFS4_OPEN_CLAIM_PREVIOUS
)
419 status
= nfserr_no_grace
;
420 if (!opens_in_grace(net
) && open
->op_claim_type
== NFS4_OPEN_CLAIM_PREVIOUS
)
423 switch (open
->op_claim_type
) {
424 case NFS4_OPEN_CLAIM_DELEGATE_CUR
:
425 case NFS4_OPEN_CLAIM_NULL
:
426 status
= do_open_lookup(rqstp
, cstate
, open
, &resfh
);
430 case NFS4_OPEN_CLAIM_PREVIOUS
:
431 status
= nfs4_check_open_reclaim(&open
->op_clientid
,
435 open
->op_openowner
->oo_flags
|= NFS4_OO_CONFIRMED
;
438 case NFS4_OPEN_CLAIM_FH
:
439 case NFS4_OPEN_CLAIM_DELEG_CUR_FH
:
440 status
= do_open_fhandle(rqstp
, cstate
, open
);
443 resfh
= &cstate
->current_fh
;
445 case NFS4_OPEN_CLAIM_DELEG_PREV_FH
:
446 case NFS4_OPEN_CLAIM_DELEGATE_PREV
:
447 dprintk("NFSD: unsupported OPEN claim type %d\n",
448 open
->op_claim_type
);
449 status
= nfserr_notsupp
;
452 dprintk("NFSD: Invalid OPEN claim type %d\n",
453 open
->op_claim_type
);
454 status
= nfserr_inval
;
458 * nfsd4_process_open2() does the actual opening of the file. If
459 * successful, it (1) truncates the file if open->op_truncate was
460 * set, (2) sets open->op_stateid, (3) sets open->op_delegation.
462 status
= nfsd4_process_open2(rqstp
, resfh
, open
);
463 WARN(status
&& open
->op_created
,
464 "nfsd4_process_open2 failed to open newly-created file! status=%u\n",
465 be32_to_cpu(status
));
466 if (reclaim
&& !status
)
467 nn
->somebody_reclaimed
= true;
469 if (resfh
&& resfh
!= &cstate
->current_fh
) {
470 fh_dup2(&cstate
->current_fh
, resfh
);
474 nfsd4_cleanup_open_state(cstate
, open
);
475 nfsd4_bump_seqid(cstate
, status
);
480 * OPEN is the only seqid-mutating operation whose decoding can fail
481 * with a seqid-mutating error (specifically, decoding of user names in
482 * the attributes). Therefore we have to do some processing to look up
483 * the stateowner so that we can bump the seqid.
485 static __be32
nfsd4_open_omfg(struct svc_rqst
*rqstp
, struct nfsd4_compound_state
*cstate
, struct nfsd4_op
*op
)
487 struct nfsd4_open
*open
= &op
->u
.open
;
489 if (!seqid_mutating_err(ntohl(op
->status
)))
491 if (nfsd4_has_session(cstate
))
493 open
->op_xdr_error
= op
->status
;
494 return nfsd4_open(rqstp
, cstate
, &op
->u
);
498 * filehandle-manipulating ops.
501 nfsd4_getfh(struct svc_rqst
*rqstp
, struct nfsd4_compound_state
*cstate
,
504 u
->getfh
= &cstate
->current_fh
;
509 nfsd4_putfh(struct svc_rqst
*rqstp
, struct nfsd4_compound_state
*cstate
,
512 struct nfsd4_putfh
*putfh
= &u
->putfh
;
515 fh_put(&cstate
->current_fh
);
516 cstate
->current_fh
.fh_handle
.fh_size
= putfh
->pf_fhlen
;
517 memcpy(&cstate
->current_fh
.fh_handle
.fh_base
, putfh
->pf_fhval
,
519 ret
= fh_verify(rqstp
, &cstate
->current_fh
, 0, NFSD_MAY_BYPASS_GSS
);
520 #ifdef CONFIG_NFSD_V4_2_INTER_SSC
521 if (ret
== nfserr_stale
&& putfh
->no_verify
) {
522 SET_FH_FLAG(&cstate
->current_fh
, NFSD4_FH_FOREIGN
);
530 nfsd4_putrootfh(struct svc_rqst
*rqstp
, struct nfsd4_compound_state
*cstate
,
535 fh_put(&cstate
->current_fh
);
536 status
= exp_pseudoroot(rqstp
, &cstate
->current_fh
);
541 nfsd4_restorefh(struct svc_rqst
*rqstp
, struct nfsd4_compound_state
*cstate
,
544 if (!cstate
->save_fh
.fh_dentry
)
545 return nfserr_restorefh
;
547 fh_dup2(&cstate
->current_fh
, &cstate
->save_fh
);
548 if (HAS_CSTATE_FLAG(cstate
, SAVED_STATE_ID_FLAG
)) {
549 memcpy(&cstate
->current_stateid
, &cstate
->save_stateid
, sizeof(stateid_t
));
550 SET_CSTATE_FLAG(cstate
, CURRENT_STATE_ID_FLAG
);
556 nfsd4_savefh(struct svc_rqst
*rqstp
, struct nfsd4_compound_state
*cstate
,
559 fh_dup2(&cstate
->save_fh
, &cstate
->current_fh
);
560 if (HAS_CSTATE_FLAG(cstate
, CURRENT_STATE_ID_FLAG
)) {
561 memcpy(&cstate
->save_stateid
, &cstate
->current_stateid
, sizeof(stateid_t
));
562 SET_CSTATE_FLAG(cstate
, SAVED_STATE_ID_FLAG
);
571 nfsd4_access(struct svc_rqst
*rqstp
, struct nfsd4_compound_state
*cstate
,
574 struct nfsd4_access
*access
= &u
->access
;
577 access_full
= NFS3_ACCESS_FULL
;
578 if (cstate
->minorversion
>= 2)
579 access_full
|= NFS4_ACCESS_XALIST
| NFS4_ACCESS_XAREAD
|
582 if (access
->ac_req_access
& ~access_full
)
585 access
->ac_resp_access
= access
->ac_req_access
;
586 return nfsd_access(rqstp
, &cstate
->current_fh
, &access
->ac_resp_access
,
587 &access
->ac_supported
);
590 static void gen_boot_verifier(nfs4_verifier
*verifier
, struct net
*net
)
592 __be32
*verf
= (__be32
*)verifier
->data
;
594 BUILD_BUG_ON(2*sizeof(*verf
) != sizeof(verifier
->data
));
596 nfsd_copy_boot_verifier(verf
, net_generic(net
, nfsd_net_id
));
600 nfsd4_commit(struct svc_rqst
*rqstp
, struct nfsd4_compound_state
*cstate
,
603 struct nfsd4_commit
*commit
= &u
->commit
;
605 return nfsd_commit(rqstp
, &cstate
->current_fh
, commit
->co_offset
,
607 (__be32
*)commit
->co_verf
.data
);
611 nfsd4_create(struct svc_rqst
*rqstp
, struct nfsd4_compound_state
*cstate
,
614 struct nfsd4_create
*create
= &u
->create
;
619 fh_init(&resfh
, NFS4_FHSIZE
);
621 status
= fh_verify(rqstp
, &cstate
->current_fh
, S_IFDIR
, NFSD_MAY_NOP
);
625 status
= check_attr_support(rqstp
, cstate
, create
->cr_bmval
,
630 current
->fs
->umask
= create
->cr_umask
;
631 switch (create
->cr_type
) {
633 status
= nfsd_symlink(rqstp
, &cstate
->current_fh
,
634 create
->cr_name
, create
->cr_namelen
,
635 create
->cr_data
, &resfh
);
639 status
= nfserr_inval
;
640 rdev
= MKDEV(create
->cr_specdata1
, create
->cr_specdata2
);
641 if (MAJOR(rdev
) != create
->cr_specdata1
||
642 MINOR(rdev
) != create
->cr_specdata2
)
644 status
= nfsd_create(rqstp
, &cstate
->current_fh
,
645 create
->cr_name
, create
->cr_namelen
,
646 &create
->cr_iattr
, S_IFBLK
, rdev
, &resfh
);
650 status
= nfserr_inval
;
651 rdev
= MKDEV(create
->cr_specdata1
, create
->cr_specdata2
);
652 if (MAJOR(rdev
) != create
->cr_specdata1
||
653 MINOR(rdev
) != create
->cr_specdata2
)
655 status
= nfsd_create(rqstp
, &cstate
->current_fh
,
656 create
->cr_name
, create
->cr_namelen
,
657 &create
->cr_iattr
,S_IFCHR
, rdev
, &resfh
);
661 status
= nfsd_create(rqstp
, &cstate
->current_fh
,
662 create
->cr_name
, create
->cr_namelen
,
663 &create
->cr_iattr
, S_IFSOCK
, 0, &resfh
);
667 status
= nfsd_create(rqstp
, &cstate
->current_fh
,
668 create
->cr_name
, create
->cr_namelen
,
669 &create
->cr_iattr
, S_IFIFO
, 0, &resfh
);
673 create
->cr_iattr
.ia_valid
&= ~ATTR_SIZE
;
674 status
= nfsd_create(rqstp
, &cstate
->current_fh
,
675 create
->cr_name
, create
->cr_namelen
,
676 &create
->cr_iattr
, S_IFDIR
, 0, &resfh
);
680 status
= nfserr_badtype
;
686 if (create
->cr_label
.len
)
687 nfsd4_security_inode_setsecctx(&resfh
, &create
->cr_label
, create
->cr_bmval
);
689 if (create
->cr_acl
!= NULL
)
690 do_set_nfs4_acl(rqstp
, &resfh
, create
->cr_acl
,
693 fh_unlock(&cstate
->current_fh
);
694 set_change_info(&create
->cr_cinfo
, &cstate
->current_fh
);
695 fh_dup2(&cstate
->current_fh
, &resfh
);
699 current
->fs
->umask
= 0;
704 nfsd4_getattr(struct svc_rqst
*rqstp
, struct nfsd4_compound_state
*cstate
,
707 struct nfsd4_getattr
*getattr
= &u
->getattr
;
710 status
= fh_verify(rqstp
, &cstate
->current_fh
, 0, NFSD_MAY_NOP
);
714 if (getattr
->ga_bmval
[1] & NFSD_WRITEONLY_ATTRS_WORD1
)
717 getattr
->ga_bmval
[0] &= nfsd_suppattrs
[cstate
->minorversion
][0];
718 getattr
->ga_bmval
[1] &= nfsd_suppattrs
[cstate
->minorversion
][1];
719 getattr
->ga_bmval
[2] &= nfsd_suppattrs
[cstate
->minorversion
][2];
721 getattr
->ga_fhp
= &cstate
->current_fh
;
726 nfsd4_link(struct svc_rqst
*rqstp
, struct nfsd4_compound_state
*cstate
,
729 struct nfsd4_link
*link
= &u
->link
;
732 status
= nfsd_link(rqstp
, &cstate
->current_fh
,
733 link
->li_name
, link
->li_namelen
, &cstate
->save_fh
);
735 set_change_info(&link
->li_cinfo
, &cstate
->current_fh
);
739 static __be32
nfsd4_do_lookupp(struct svc_rqst
*rqstp
, struct svc_fh
*fh
)
741 struct svc_fh tmp_fh
;
744 fh_init(&tmp_fh
, NFS4_FHSIZE
);
745 ret
= exp_pseudoroot(rqstp
, &tmp_fh
);
748 if (tmp_fh
.fh_dentry
== fh
->fh_dentry
) {
753 return nfsd_lookup(rqstp
, fh
, "..", 2, fh
);
757 nfsd4_lookupp(struct svc_rqst
*rqstp
, struct nfsd4_compound_state
*cstate
,
760 return nfsd4_do_lookupp(rqstp
, &cstate
->current_fh
);
764 nfsd4_lookup(struct svc_rqst
*rqstp
, struct nfsd4_compound_state
*cstate
,
767 return nfsd_lookup(rqstp
, &cstate
->current_fh
,
768 u
->lookup
.lo_name
, u
->lookup
.lo_len
,
769 &cstate
->current_fh
);
773 nfsd4_read(struct svc_rqst
*rqstp
, struct nfsd4_compound_state
*cstate
,
776 struct nfsd4_read
*read
= &u
->read
;
780 if (read
->rd_offset
>= OFFSET_MAX
)
783 trace_nfsd_read_start(rqstp
, &cstate
->current_fh
,
784 read
->rd_offset
, read
->rd_length
);
787 * If we do a zero copy read, then a client will see read data
788 * that reflects the state of the file *after* performing the
789 * following compound.
791 * To ensure proper ordering, we therefore turn off zero copy if
792 * the client wants us to do more in this compound:
794 if (!nfsd4_last_compound_op(rqstp
))
795 clear_bit(RQ_SPLICE_OK
, &rqstp
->rq_flags
);
798 status
= nfs4_preprocess_stateid_op(rqstp
, cstate
, &cstate
->current_fh
,
799 &read
->rd_stateid
, RD_STATE
,
802 dprintk("NFSD: nfsd4_read: couldn't process stateid!\n");
807 read
->rd_rqstp
= rqstp
;
808 read
->rd_fhp
= &cstate
->current_fh
;
814 nfsd4_read_release(union nfsd4_op_u
*u
)
817 nfsd_file_put(u
->read
.rd_nf
);
818 trace_nfsd_read_done(u
->read
.rd_rqstp
, u
->read
.rd_fhp
,
819 u
->read
.rd_offset
, u
->read
.rd_length
);
823 nfsd4_readdir(struct svc_rqst
*rqstp
, struct nfsd4_compound_state
*cstate
,
826 struct nfsd4_readdir
*readdir
= &u
->readdir
;
827 u64 cookie
= readdir
->rd_cookie
;
828 static const nfs4_verifier zeroverf
;
830 /* no need to check permission - this will be done in nfsd_readdir() */
832 if (readdir
->rd_bmval
[1] & NFSD_WRITEONLY_ATTRS_WORD1
)
835 readdir
->rd_bmval
[0] &= nfsd_suppattrs
[cstate
->minorversion
][0];
836 readdir
->rd_bmval
[1] &= nfsd_suppattrs
[cstate
->minorversion
][1];
837 readdir
->rd_bmval
[2] &= nfsd_suppattrs
[cstate
->minorversion
][2];
839 if ((cookie
== 1) || (cookie
== 2) ||
840 (cookie
== 0 && memcmp(readdir
->rd_verf
.data
, zeroverf
.data
, NFS4_VERIFIER_SIZE
)))
841 return nfserr_bad_cookie
;
843 readdir
->rd_rqstp
= rqstp
;
844 readdir
->rd_fhp
= &cstate
->current_fh
;
849 nfsd4_readlink(struct svc_rqst
*rqstp
, struct nfsd4_compound_state
*cstate
,
852 u
->readlink
.rl_rqstp
= rqstp
;
853 u
->readlink
.rl_fhp
= &cstate
->current_fh
;
858 nfsd4_remove(struct svc_rqst
*rqstp
, struct nfsd4_compound_state
*cstate
,
861 struct nfsd4_remove
*remove
= &u
->remove
;
864 if (opens_in_grace(SVC_NET(rqstp
)))
866 status
= nfsd_unlink(rqstp
, &cstate
->current_fh
, 0,
867 remove
->rm_name
, remove
->rm_namelen
);
869 fh_unlock(&cstate
->current_fh
);
870 set_change_info(&remove
->rm_cinfo
, &cstate
->current_fh
);
876 nfsd4_rename(struct svc_rqst
*rqstp
, struct nfsd4_compound_state
*cstate
,
879 struct nfsd4_rename
*rename
= &u
->rename
;
882 if (opens_in_grace(SVC_NET(rqstp
)))
884 status
= nfsd_rename(rqstp
, &cstate
->save_fh
, rename
->rn_sname
,
885 rename
->rn_snamelen
, &cstate
->current_fh
,
886 rename
->rn_tname
, rename
->rn_tnamelen
);
889 set_change_info(&rename
->rn_sinfo
, &cstate
->current_fh
);
890 set_change_info(&rename
->rn_tinfo
, &cstate
->save_fh
);
895 nfsd4_secinfo(struct svc_rqst
*rqstp
, struct nfsd4_compound_state
*cstate
,
898 struct nfsd4_secinfo
*secinfo
= &u
->secinfo
;
899 struct svc_export
*exp
;
900 struct dentry
*dentry
;
903 err
= fh_verify(rqstp
, &cstate
->current_fh
, S_IFDIR
, NFSD_MAY_EXEC
);
906 err
= nfsd_lookup_dentry(rqstp
, &cstate
->current_fh
,
907 secinfo
->si_name
, secinfo
->si_namelen
,
911 fh_unlock(&cstate
->current_fh
);
912 if (d_really_is_negative(dentry
)) {
916 secinfo
->si_exp
= exp
;
918 if (cstate
->minorversion
)
919 /* See rfc 5661 section 2.6.3.1.1.8 */
920 fh_put(&cstate
->current_fh
);
925 nfsd4_secinfo_no_name(struct svc_rqst
*rqstp
, struct nfsd4_compound_state
*cstate
,
930 switch (u
->secinfo_no_name
.sin_style
) {
931 case NFS4_SECINFO_STYLE4_CURRENT_FH
:
933 case NFS4_SECINFO_STYLE4_PARENT
:
934 err
= nfsd4_do_lookupp(rqstp
, &cstate
->current_fh
);
942 u
->secinfo_no_name
.sin_exp
= exp_get(cstate
->current_fh
.fh_export
);
943 fh_put(&cstate
->current_fh
);
948 nfsd4_secinfo_release(union nfsd4_op_u
*u
)
950 if (u
->secinfo
.si_exp
)
951 exp_put(u
->secinfo
.si_exp
);
955 nfsd4_secinfo_no_name_release(union nfsd4_op_u
*u
)
957 if (u
->secinfo_no_name
.sin_exp
)
958 exp_put(u
->secinfo_no_name
.sin_exp
);
962 nfsd4_setattr(struct svc_rqst
*rqstp
, struct nfsd4_compound_state
*cstate
,
965 struct nfsd4_setattr
*setattr
= &u
->setattr
;
966 __be32 status
= nfs_ok
;
969 if (setattr
->sa_iattr
.ia_valid
& ATTR_SIZE
) {
970 status
= nfs4_preprocess_stateid_op(rqstp
, cstate
,
971 &cstate
->current_fh
, &setattr
->sa_stateid
,
972 WR_STATE
, NULL
, NULL
);
974 dprintk("NFSD: nfsd4_setattr: couldn't process stateid!\n");
978 err
= fh_want_write(&cstate
->current_fh
);
980 return nfserrno(err
);
983 status
= check_attr_support(rqstp
, cstate
, setattr
->sa_bmval
,
988 if (setattr
->sa_acl
!= NULL
)
989 status
= nfsd4_set_nfs4_acl(rqstp
, &cstate
->current_fh
,
993 if (setattr
->sa_label
.len
)
994 status
= nfsd4_set_nfs4_label(rqstp
, &cstate
->current_fh
,
998 status
= nfsd_setattr(rqstp
, &cstate
->current_fh
, &setattr
->sa_iattr
,
1001 fh_drop_write(&cstate
->current_fh
);
1006 nfsd4_write(struct svc_rqst
*rqstp
, struct nfsd4_compound_state
*cstate
,
1007 union nfsd4_op_u
*u
)
1009 struct nfsd4_write
*write
= &u
->write
;
1010 stateid_t
*stateid
= &write
->wr_stateid
;
1011 struct nfsd_file
*nf
= NULL
;
1012 __be32 status
= nfs_ok
;
1016 if (write
->wr_offset
>= OFFSET_MAX
)
1017 return nfserr_inval
;
1019 cnt
= write
->wr_buflen
;
1020 trace_nfsd_write_start(rqstp
, &cstate
->current_fh
,
1021 write
->wr_offset
, cnt
);
1022 status
= nfs4_preprocess_stateid_op(rqstp
, cstate
, &cstate
->current_fh
,
1023 stateid
, WR_STATE
, &nf
, NULL
);
1025 dprintk("NFSD: nfsd4_write: couldn't process stateid!\n");
1029 write
->wr_how_written
= write
->wr_stable_how
;
1031 nvecs
= svc_fill_write_vector(rqstp
, write
->wr_payload
.pages
,
1032 write
->wr_payload
.head
, write
->wr_buflen
);
1033 WARN_ON_ONCE(nvecs
> ARRAY_SIZE(rqstp
->rq_vec
));
1035 status
= nfsd_vfs_write(rqstp
, &cstate
->current_fh
, nf
,
1036 write
->wr_offset
, rqstp
->rq_vec
, nvecs
, &cnt
,
1037 write
->wr_how_written
,
1038 (__be32
*)write
->wr_verifier
.data
);
1041 write
->wr_bytes_written
= cnt
;
1042 trace_nfsd_write_done(rqstp
, &cstate
->current_fh
,
1043 write
->wr_offset
, cnt
);
1048 nfsd4_verify_copy(struct svc_rqst
*rqstp
, struct nfsd4_compound_state
*cstate
,
1049 stateid_t
*src_stateid
, struct nfsd_file
**src
,
1050 stateid_t
*dst_stateid
, struct nfsd_file
**dst
)
1054 if (!cstate
->save_fh
.fh_dentry
)
1055 return nfserr_nofilehandle
;
1057 status
= nfs4_preprocess_stateid_op(rqstp
, cstate
, &cstate
->save_fh
,
1058 src_stateid
, RD_STATE
, src
, NULL
);
1060 dprintk("NFSD: %s: couldn't process src stateid!\n", __func__
);
1064 status
= nfs4_preprocess_stateid_op(rqstp
, cstate
, &cstate
->current_fh
,
1065 dst_stateid
, WR_STATE
, dst
, NULL
);
1067 dprintk("NFSD: %s: couldn't process dst stateid!\n", __func__
);
1071 /* fix up for NFS-specific error code */
1072 if (!S_ISREG(file_inode((*src
)->nf_file
)->i_mode
) ||
1073 !S_ISREG(file_inode((*dst
)->nf_file
)->i_mode
)) {
1074 status
= nfserr_wrong_type
;
1081 nfsd_file_put(*dst
);
1083 nfsd_file_put(*src
);
1088 nfsd4_clone(struct svc_rqst
*rqstp
, struct nfsd4_compound_state
*cstate
,
1089 union nfsd4_op_u
*u
)
1091 struct nfsd4_clone
*clone
= &u
->clone
;
1092 struct nfsd_file
*src
, *dst
;
1095 status
= nfsd4_verify_copy(rqstp
, cstate
, &clone
->cl_src_stateid
, &src
,
1096 &clone
->cl_dst_stateid
, &dst
);
1100 status
= nfsd4_clone_file_range(src
, clone
->cl_src_pos
,
1101 dst
, clone
->cl_dst_pos
, clone
->cl_count
,
1102 EX_ISSYNC(cstate
->current_fh
.fh_export
));
1110 void nfs4_put_copy(struct nfsd4_copy
*copy
)
1112 if (!refcount_dec_and_test(©
->refcount
))
1118 check_and_set_stop_copy(struct nfsd4_copy
*copy
)
1122 spin_lock(©
->cp_clp
->async_lock
);
1123 value
= copy
->stopped
;
1125 copy
->stopped
= true;
1126 spin_unlock(©
->cp_clp
->async_lock
);
1130 static void nfsd4_stop_copy(struct nfsd4_copy
*copy
)
1132 /* only 1 thread should stop the copy */
1133 if (!check_and_set_stop_copy(copy
))
1134 kthread_stop(copy
->copy_task
);
1135 nfs4_put_copy(copy
);
1138 static struct nfsd4_copy
*nfsd4_get_copy(struct nfs4_client
*clp
)
1140 struct nfsd4_copy
*copy
= NULL
;
1142 spin_lock(&clp
->async_lock
);
1143 if (!list_empty(&clp
->async_copies
)) {
1144 copy
= list_first_entry(&clp
->async_copies
, struct nfsd4_copy
,
1146 refcount_inc(©
->refcount
);
1148 spin_unlock(&clp
->async_lock
);
1152 void nfsd4_shutdown_copy(struct nfs4_client
*clp
)
1154 struct nfsd4_copy
*copy
;
1156 while ((copy
= nfsd4_get_copy(clp
)) != NULL
)
1157 nfsd4_stop_copy(copy
);
1159 #ifdef CONFIG_NFSD_V4_2_INTER_SSC
1161 extern struct file
*nfs42_ssc_open(struct vfsmount
*ss_mnt
,
1162 struct nfs_fh
*src_fh
,
1163 nfs4_stateid
*stateid
);
1164 extern void nfs42_ssc_close(struct file
*filep
);
1166 extern void nfs_sb_deactive(struct super_block
*sb
);
1168 #define NFSD42_INTERSSC_MOUNTOPS "vers=4.2,addr=%s,sec=sys"
1171 * Support one copy source server for now.
1174 nfsd4_interssc_connect(struct nl4_server
*nss
, struct svc_rqst
*rqstp
,
1175 struct vfsmount
**mount
)
1177 struct file_system_type
*type
;
1178 struct vfsmount
*ss_mnt
;
1179 struct nfs42_netaddr
*naddr
;
1180 struct sockaddr_storage tmp_addr
;
1181 size_t tmp_addrlen
, match_netid_len
= 3;
1182 char *startsep
= "", *endsep
= "", *match_netid
= "tcp";
1183 char *ipaddr
, *dev_name
, *raw_data
;
1185 __be32 status
= nfserr_inval
;
1187 naddr
= &nss
->u
.nl4_addr
;
1188 tmp_addrlen
= rpc_uaddr2sockaddr(SVC_NET(rqstp
), naddr
->addr
,
1190 (struct sockaddr
*)&tmp_addr
,
1192 if (tmp_addrlen
== 0)
1195 if (tmp_addr
.ss_family
== AF_INET6
) {
1198 match_netid
= "tcp6";
1199 match_netid_len
= 4;
1202 if (naddr
->netid_len
!= match_netid_len
||
1203 strncmp(naddr
->netid
, match_netid
, naddr
->netid_len
))
1206 /* Construct the raw data for the vfs_kern_mount call */
1207 len
= RPC_MAX_ADDRBUFLEN
+ 1;
1208 ipaddr
= kzalloc(len
, GFP_KERNEL
);
1212 rpc_ntop((struct sockaddr
*)&tmp_addr
, ipaddr
, len
);
1214 /* 2 for ipv6 endsep and startsep. 3 for ":/" and trailing '/0'*/
1216 raw_len
= strlen(NFSD42_INTERSSC_MOUNTOPS
) + strlen(ipaddr
);
1217 raw_data
= kzalloc(raw_len
, GFP_KERNEL
);
1219 goto out_free_ipaddr
;
1221 snprintf(raw_data
, raw_len
, NFSD42_INTERSSC_MOUNTOPS
, ipaddr
);
1223 status
= nfserr_nodev
;
1224 type
= get_fs_type("nfs");
1226 goto out_free_rawdata
;
1228 /* Set the server:<export> for the vfs_kern_mount call */
1229 dev_name
= kzalloc(len
+ 5, GFP_KERNEL
);
1231 goto out_free_rawdata
;
1232 snprintf(dev_name
, len
+ 5, "%s%s%s:/", startsep
, ipaddr
, endsep
);
1234 /* Use an 'internal' mount: SB_KERNMOUNT -> MNT_INTERNAL */
1235 ss_mnt
= vfs_kern_mount(type
, SB_KERNMOUNT
, dev_name
, raw_data
);
1236 module_put(type
->owner
);
1238 goto out_free_devname
;
1254 nfsd4_interssc_disconnect(struct vfsmount
*ss_mnt
)
1256 nfs_do_sb_deactive(ss_mnt
->mnt_sb
);
1261 * Verify COPY destination stateid.
1263 * Connect to the source server with NFSv4.1.
1264 * Create the source struct file for nfsd_copy_range.
1265 * Called with COPY cstate:
1266 * SAVED_FH: source filehandle
1267 * CURRENT_FH: destination filehandle
1270 nfsd4_setup_inter_ssc(struct svc_rqst
*rqstp
,
1271 struct nfsd4_compound_state
*cstate
,
1272 struct nfsd4_copy
*copy
, struct vfsmount
**mount
)
1274 struct svc_fh
*s_fh
= NULL
;
1275 stateid_t
*s_stid
= ©
->cp_src_stateid
;
1276 __be32 status
= nfserr_inval
;
1278 /* Verify the destination stateid and set dst struct file*/
1279 status
= nfs4_preprocess_stateid_op(rqstp
, cstate
, &cstate
->current_fh
,
1280 ©
->cp_dst_stateid
,
1281 WR_STATE
, ©
->nf_dst
, NULL
);
1285 status
= nfsd4_interssc_connect(©
->cp_src
, rqstp
, mount
);
1289 s_fh
= &cstate
->save_fh
;
1291 copy
->c_fh
.size
= s_fh
->fh_handle
.fh_size
;
1292 memcpy(copy
->c_fh
.data
, &s_fh
->fh_handle
.fh_base
, copy
->c_fh
.size
);
1293 copy
->stateid
.seqid
= cpu_to_be32(s_stid
->si_generation
);
1294 memcpy(copy
->stateid
.other
, (void *)&s_stid
->si_opaque
,
1295 sizeof(stateid_opaque_t
));
1303 nfsd4_cleanup_inter_ssc(struct vfsmount
*ss_mnt
, struct nfsd_file
*src
,
1304 struct nfsd_file
*dst
)
1306 nfs42_ssc_close(src
->nf_file
);
1307 /* 'src' is freed by nfsd4_do_async_copy */
1312 #else /* CONFIG_NFSD_V4_2_INTER_SSC */
1315 nfsd4_setup_inter_ssc(struct svc_rqst
*rqstp
,
1316 struct nfsd4_compound_state
*cstate
,
1317 struct nfsd4_copy
*copy
,
1318 struct vfsmount
**mount
)
1321 return nfserr_inval
;
1325 nfsd4_cleanup_inter_ssc(struct vfsmount
*ss_mnt
, struct nfsd_file
*src
,
1326 struct nfsd_file
*dst
)
1331 nfsd4_interssc_disconnect(struct vfsmount
*ss_mnt
)
1335 static struct file
*nfs42_ssc_open(struct vfsmount
*ss_mnt
,
1336 struct nfs_fh
*src_fh
,
1337 nfs4_stateid
*stateid
)
1341 #endif /* CONFIG_NFSD_V4_2_INTER_SSC */
1344 nfsd4_setup_intra_ssc(struct svc_rqst
*rqstp
,
1345 struct nfsd4_compound_state
*cstate
,
1346 struct nfsd4_copy
*copy
)
1348 return nfsd4_verify_copy(rqstp
, cstate
, ©
->cp_src_stateid
,
1349 ©
->nf_src
, ©
->cp_dst_stateid
,
1354 nfsd4_cleanup_intra_ssc(struct nfsd_file
*src
, struct nfsd_file
*dst
)
1360 static void nfsd4_cb_offload_release(struct nfsd4_callback
*cb
)
1362 struct nfsd4_copy
*copy
= container_of(cb
, struct nfsd4_copy
, cp_cb
);
1364 nfs4_put_copy(copy
);
1367 static int nfsd4_cb_offload_done(struct nfsd4_callback
*cb
,
1368 struct rpc_task
*task
)
1373 static const struct nfsd4_callback_ops nfsd4_cb_offload_ops
= {
1374 .release
= nfsd4_cb_offload_release
,
1375 .done
= nfsd4_cb_offload_done
1378 static void nfsd4_init_copy_res(struct nfsd4_copy
*copy
, bool sync
)
1380 copy
->cp_res
.wr_stable_how
= NFS_UNSTABLE
;
1381 copy
->cp_synchronous
= sync
;
1382 gen_boot_verifier(©
->cp_res
.wr_verifier
, copy
->cp_clp
->net
);
1385 static ssize_t
_nfsd_copy_file_range(struct nfsd4_copy
*copy
)
1387 ssize_t bytes_copied
= 0;
1388 size_t bytes_total
= copy
->cp_count
;
1389 u64 src_pos
= copy
->cp_src_pos
;
1390 u64 dst_pos
= copy
->cp_dst_pos
;
1393 if (kthread_should_stop())
1395 bytes_copied
= nfsd_copy_file_range(copy
->nf_src
->nf_file
,
1396 src_pos
, copy
->nf_dst
->nf_file
, dst_pos
,
1398 if (bytes_copied
<= 0)
1400 bytes_total
-= bytes_copied
;
1401 copy
->cp_res
.wr_bytes_written
+= bytes_copied
;
1402 src_pos
+= bytes_copied
;
1403 dst_pos
+= bytes_copied
;
1404 } while (bytes_total
> 0 && !copy
->cp_synchronous
);
1405 return bytes_copied
;
1408 static __be32
nfsd4_do_copy(struct nfsd4_copy
*copy
, bool sync
)
1413 bytes
= _nfsd_copy_file_range(copy
);
1414 /* for async copy, we ignore the error, client can always retry
1417 if (bytes
< 0 && !copy
->cp_res
.wr_bytes_written
)
1418 status
= nfserrno(bytes
);
1420 nfsd4_init_copy_res(copy
, sync
);
1424 if (!copy
->cp_intra
) /* Inter server SSC */
1425 nfsd4_cleanup_inter_ssc(copy
->ss_mnt
, copy
->nf_src
,
1428 nfsd4_cleanup_intra_ssc(copy
->nf_src
, copy
->nf_dst
);
1433 static void dup_copy_fields(struct nfsd4_copy
*src
, struct nfsd4_copy
*dst
)
1435 dst
->cp_src_pos
= src
->cp_src_pos
;
1436 dst
->cp_dst_pos
= src
->cp_dst_pos
;
1437 dst
->cp_count
= src
->cp_count
;
1438 dst
->cp_synchronous
= src
->cp_synchronous
;
1439 memcpy(&dst
->cp_res
, &src
->cp_res
, sizeof(src
->cp_res
));
1440 memcpy(&dst
->fh
, &src
->fh
, sizeof(src
->fh
));
1441 dst
->cp_clp
= src
->cp_clp
;
1442 dst
->nf_dst
= nfsd_file_get(src
->nf_dst
);
1443 dst
->cp_intra
= src
->cp_intra
;
1444 if (src
->cp_intra
) /* for inter, file_src doesn't exist yet */
1445 dst
->nf_src
= nfsd_file_get(src
->nf_src
);
1447 memcpy(&dst
->cp_stateid
, &src
->cp_stateid
, sizeof(src
->cp_stateid
));
1448 memcpy(&dst
->cp_src
, &src
->cp_src
, sizeof(struct nl4_server
));
1449 memcpy(&dst
->stateid
, &src
->stateid
, sizeof(src
->stateid
));
1450 memcpy(&dst
->c_fh
, &src
->c_fh
, sizeof(src
->c_fh
));
1451 dst
->ss_mnt
= src
->ss_mnt
;
1454 static void cleanup_async_copy(struct nfsd4_copy
*copy
)
1456 nfs4_free_copy_state(copy
);
1457 nfsd_file_put(copy
->nf_dst
);
1459 nfsd_file_put(copy
->nf_src
);
1460 spin_lock(©
->cp_clp
->async_lock
);
1461 list_del(©
->copies
);
1462 spin_unlock(©
->cp_clp
->async_lock
);
1463 nfs4_put_copy(copy
);
1466 static int nfsd4_do_async_copy(void *data
)
1468 struct nfsd4_copy
*copy
= (struct nfsd4_copy
*)data
;
1469 struct nfsd4_copy
*cb_copy
;
1471 if (!copy
->cp_intra
) { /* Inter server SSC */
1472 copy
->nf_src
= kzalloc(sizeof(struct nfsd_file
), GFP_KERNEL
);
1473 if (!copy
->nf_src
) {
1474 copy
->nfserr
= nfserr_serverfault
;
1475 nfsd4_interssc_disconnect(copy
->ss_mnt
);
1478 copy
->nf_src
->nf_file
= nfs42_ssc_open(copy
->ss_mnt
, ©
->c_fh
,
1480 if (IS_ERR(copy
->nf_src
->nf_file
)) {
1481 copy
->nfserr
= nfserr_offload_denied
;
1482 nfsd4_interssc_disconnect(copy
->ss_mnt
);
1487 copy
->nfserr
= nfsd4_do_copy(copy
, 0);
1489 cb_copy
= kzalloc(sizeof(struct nfsd4_copy
), GFP_KERNEL
);
1492 refcount_set(&cb_copy
->refcount
, 1);
1493 memcpy(&cb_copy
->cp_res
, ©
->cp_res
, sizeof(copy
->cp_res
));
1494 cb_copy
->cp_clp
= copy
->cp_clp
;
1495 cb_copy
->nfserr
= copy
->nfserr
;
1496 memcpy(&cb_copy
->fh
, ©
->fh
, sizeof(copy
->fh
));
1497 nfsd4_init_cb(&cb_copy
->cp_cb
, cb_copy
->cp_clp
,
1498 &nfsd4_cb_offload_ops
, NFSPROC4_CLNT_CB_OFFLOAD
);
1499 nfsd4_run_cb(&cb_copy
->cp_cb
);
1501 if (!copy
->cp_intra
)
1502 kfree(copy
->nf_src
);
1503 cleanup_async_copy(copy
);
1508 nfsd4_copy(struct svc_rqst
*rqstp
, struct nfsd4_compound_state
*cstate
,
1509 union nfsd4_op_u
*u
)
1511 struct nfsd4_copy
*copy
= &u
->copy
;
1513 struct nfsd4_copy
*async_copy
= NULL
;
1515 if (!copy
->cp_intra
) { /* Inter server SSC */
1516 if (!inter_copy_offload_enable
|| copy
->cp_synchronous
) {
1517 status
= nfserr_notsupp
;
1520 status
= nfsd4_setup_inter_ssc(rqstp
, cstate
, copy
,
1523 return nfserr_offload_denied
;
1525 status
= nfsd4_setup_intra_ssc(rqstp
, cstate
, copy
);
1530 copy
->cp_clp
= cstate
->clp
;
1531 memcpy(©
->fh
, &cstate
->current_fh
.fh_handle
,
1532 sizeof(struct knfsd_fh
));
1533 if (!copy
->cp_synchronous
) {
1534 struct nfsd_net
*nn
= net_generic(SVC_NET(rqstp
), nfsd_net_id
);
1536 status
= nfserrno(-ENOMEM
);
1537 async_copy
= kzalloc(sizeof(struct nfsd4_copy
), GFP_KERNEL
);
1540 if (!nfs4_init_copy_state(nn
, copy
))
1542 refcount_set(&async_copy
->refcount
, 1);
1543 memcpy(©
->cp_res
.cb_stateid
, ©
->cp_stateid
,
1544 sizeof(copy
->cp_stateid
));
1545 dup_copy_fields(copy
, async_copy
);
1546 async_copy
->copy_task
= kthread_create(nfsd4_do_async_copy
,
1547 async_copy
, "%s", "copy thread");
1548 if (IS_ERR(async_copy
->copy_task
))
1550 spin_lock(&async_copy
->cp_clp
->async_lock
);
1551 list_add(&async_copy
->copies
,
1552 &async_copy
->cp_clp
->async_copies
);
1553 spin_unlock(&async_copy
->cp_clp
->async_lock
);
1554 wake_up_process(async_copy
->copy_task
);
1557 status
= nfsd4_do_copy(copy
, 1);
1563 cleanup_async_copy(async_copy
);
1564 status
= nfserrno(-ENOMEM
);
1565 if (!copy
->cp_intra
)
1566 nfsd4_interssc_disconnect(copy
->ss_mnt
);
1571 find_async_copy(struct nfs4_client
*clp
, stateid_t
*stateid
)
1573 struct nfsd4_copy
*copy
;
1575 spin_lock(&clp
->async_lock
);
1576 list_for_each_entry(copy
, &clp
->async_copies
, copies
) {
1577 if (memcmp(©
->cp_stateid
.stid
, stateid
, NFS4_STATEID_SIZE
))
1579 refcount_inc(©
->refcount
);
1580 spin_unlock(&clp
->async_lock
);
1583 spin_unlock(&clp
->async_lock
);
1588 nfsd4_offload_cancel(struct svc_rqst
*rqstp
,
1589 struct nfsd4_compound_state
*cstate
,
1590 union nfsd4_op_u
*u
)
1592 struct nfsd4_offload_status
*os
= &u
->offload_status
;
1593 struct nfsd4_copy
*copy
;
1594 struct nfs4_client
*clp
= cstate
->clp
;
1596 copy
= find_async_copy(clp
, &os
->stateid
);
1598 struct nfsd_net
*nn
= net_generic(SVC_NET(rqstp
), nfsd_net_id
);
1600 return manage_cpntf_state(nn
, &os
->stateid
, clp
, NULL
);
1602 nfsd4_stop_copy(copy
);
1608 nfsd4_copy_notify(struct svc_rqst
*rqstp
, struct nfsd4_compound_state
*cstate
,
1609 union nfsd4_op_u
*u
)
1611 struct nfsd4_copy_notify
*cn
= &u
->copy_notify
;
1613 struct nfsd_net
*nn
= net_generic(SVC_NET(rqstp
), nfsd_net_id
);
1614 struct nfs4_stid
*stid
;
1615 struct nfs4_cpntf_state
*cps
;
1616 struct nfs4_client
*clp
= cstate
->clp
;
1618 status
= nfs4_preprocess_stateid_op(rqstp
, cstate
, &cstate
->current_fh
,
1619 &cn
->cpn_src_stateid
, RD_STATE
, NULL
,
1624 cn
->cpn_sec
= nn
->nfsd4_lease
;
1627 status
= nfserrno(-ENOMEM
);
1628 cps
= nfs4_alloc_init_cpntf_state(nn
, stid
);
1631 memcpy(&cn
->cpn_cnr_stateid
, &cps
->cp_stateid
.stid
, sizeof(stateid_t
));
1632 memcpy(&cps
->cp_p_stateid
, &stid
->sc_stateid
, sizeof(stateid_t
));
1633 memcpy(&cps
->cp_p_clid
, &clp
->cl_clientid
, sizeof(clientid_t
));
1635 /* For now, only return one server address in cpn_src, the
1636 * address used by the client to connect to this server.
1638 cn
->cpn_src
.nl4_type
= NL4_NETADDR
;
1639 status
= nfsd4_set_netaddr((struct sockaddr
*)&rqstp
->rq_daddr
,
1640 &cn
->cpn_src
.u
.nl4_addr
);
1641 WARN_ON_ONCE(status
);
1643 nfs4_put_cpntf_state(nn
, cps
);
1647 nfs4_put_stid(stid
);
1652 nfsd4_fallocate(struct svc_rqst
*rqstp
, struct nfsd4_compound_state
*cstate
,
1653 struct nfsd4_fallocate
*fallocate
, int flags
)
1656 struct nfsd_file
*nf
;
1658 status
= nfs4_preprocess_stateid_op(rqstp
, cstate
, &cstate
->current_fh
,
1659 &fallocate
->falloc_stateid
,
1660 WR_STATE
, &nf
, NULL
);
1661 if (status
!= nfs_ok
) {
1662 dprintk("NFSD: nfsd4_fallocate: couldn't process stateid!\n");
1666 status
= nfsd4_vfs_fallocate(rqstp
, &cstate
->current_fh
, nf
->nf_file
,
1667 fallocate
->falloc_offset
,
1668 fallocate
->falloc_length
,
1674 nfsd4_offload_status(struct svc_rqst
*rqstp
,
1675 struct nfsd4_compound_state
*cstate
,
1676 union nfsd4_op_u
*u
)
1678 struct nfsd4_offload_status
*os
= &u
->offload_status
;
1680 struct nfsd4_copy
*copy
;
1681 struct nfs4_client
*clp
= cstate
->clp
;
1683 copy
= find_async_copy(clp
, &os
->stateid
);
1685 os
->count
= copy
->cp_res
.wr_bytes_written
;
1686 nfs4_put_copy(copy
);
1688 status
= nfserr_bad_stateid
;
1694 nfsd4_allocate(struct svc_rqst
*rqstp
, struct nfsd4_compound_state
*cstate
,
1695 union nfsd4_op_u
*u
)
1697 return nfsd4_fallocate(rqstp
, cstate
, &u
->allocate
, 0);
1701 nfsd4_deallocate(struct svc_rqst
*rqstp
, struct nfsd4_compound_state
*cstate
,
1702 union nfsd4_op_u
*u
)
1704 return nfsd4_fallocate(rqstp
, cstate
, &u
->deallocate
,
1705 FALLOC_FL_PUNCH_HOLE
| FALLOC_FL_KEEP_SIZE
);
1709 nfsd4_seek(struct svc_rqst
*rqstp
, struct nfsd4_compound_state
*cstate
,
1710 union nfsd4_op_u
*u
)
1712 struct nfsd4_seek
*seek
= &u
->seek
;
1715 struct nfsd_file
*nf
;
1717 status
= nfs4_preprocess_stateid_op(rqstp
, cstate
, &cstate
->current_fh
,
1718 &seek
->seek_stateid
,
1719 RD_STATE
, &nf
, NULL
);
1721 dprintk("NFSD: nfsd4_seek: couldn't process stateid!\n");
1725 switch (seek
->seek_whence
) {
1726 case NFS4_CONTENT_DATA
:
1729 case NFS4_CONTENT_HOLE
:
1733 status
= nfserr_union_notsupp
;
1738 * Note: This call does change file->f_pos, but nothing in NFSD
1739 * should ever file->f_pos.
1741 seek
->seek_pos
= vfs_llseek(nf
->nf_file
, seek
->seek_offset
, whence
);
1742 if (seek
->seek_pos
< 0)
1743 status
= nfserrno(seek
->seek_pos
);
1744 else if (seek
->seek_pos
>= i_size_read(file_inode(nf
->nf_file
)))
1745 seek
->seek_eof
= true;
1752 /* This routine never returns NFS_OK! If there are no other errors, it
1753 * will return NFSERR_SAME or NFSERR_NOT_SAME depending on whether the
1754 * attributes matched. VERIFY is implemented by mapping NFSERR_SAME
1755 * to NFS_OK after the call; NVERIFY by mapping NFSERR_NOT_SAME to NFS_OK.
1758 _nfsd4_verify(struct svc_rqst
*rqstp
, struct nfsd4_compound_state
*cstate
,
1759 struct nfsd4_verify
*verify
)
1765 status
= fh_verify(rqstp
, &cstate
->current_fh
, 0, NFSD_MAY_NOP
);
1769 status
= check_attr_support(rqstp
, cstate
, verify
->ve_bmval
, NULL
);
1773 if ((verify
->ve_bmval
[0] & FATTR4_WORD0_RDATTR_ERROR
)
1774 || (verify
->ve_bmval
[1] & NFSD_WRITEONLY_ATTRS_WORD1
))
1775 return nfserr_inval
;
1776 if (verify
->ve_attrlen
& 3)
1777 return nfserr_inval
;
1780 * bitmap_len(1) + bitmap(2) + attr_len(1) = 4
1782 count
= 4 + (verify
->ve_attrlen
>> 2);
1783 buf
= kmalloc(count
<< 2, GFP_KERNEL
);
1785 return nfserr_jukebox
;
1788 status
= nfsd4_encode_fattr_to_buf(&p
, count
, &cstate
->current_fh
,
1789 cstate
->current_fh
.fh_export
,
1790 cstate
->current_fh
.fh_dentry
,
1794 * If nfsd4_encode_fattr() ran out of space, assume that's because
1795 * the attributes are longer (hence different) than those given:
1797 if (status
== nfserr_resource
)
1798 status
= nfserr_not_same
;
1803 p
= buf
+ 1 + ntohl(buf
[0]);
1804 status
= nfserr_not_same
;
1805 if (ntohl(*p
++) != verify
->ve_attrlen
)
1807 if (!memcmp(p
, verify
->ve_attrval
, verify
->ve_attrlen
))
1808 status
= nfserr_same
;
1816 nfsd4_nverify(struct svc_rqst
*rqstp
, struct nfsd4_compound_state
*cstate
,
1817 union nfsd4_op_u
*u
)
1821 status
= _nfsd4_verify(rqstp
, cstate
, &u
->verify
);
1822 return status
== nfserr_not_same
? nfs_ok
: status
;
1826 nfsd4_verify(struct svc_rqst
*rqstp
, struct nfsd4_compound_state
*cstate
,
1827 union nfsd4_op_u
*u
)
1831 status
= _nfsd4_verify(rqstp
, cstate
, &u
->nverify
);
1832 return status
== nfserr_same
? nfs_ok
: status
;
1835 #ifdef CONFIG_NFSD_PNFS
1836 static const struct nfsd4_layout_ops
*
1837 nfsd4_layout_verify(struct svc_export
*exp
, unsigned int layout_type
)
1839 if (!exp
->ex_layout_types
) {
1840 dprintk("%s: export does not support pNFS\n", __func__
);
1844 if (layout_type
>= LAYOUT_TYPE_MAX
||
1845 !(exp
->ex_layout_types
& (1 << layout_type
))) {
1846 dprintk("%s: layout type %d not supported\n",
1847 __func__
, layout_type
);
1851 return nfsd4_layout_ops
[layout_type
];
1855 nfsd4_getdeviceinfo(struct svc_rqst
*rqstp
,
1856 struct nfsd4_compound_state
*cstate
, union nfsd4_op_u
*u
)
1858 struct nfsd4_getdeviceinfo
*gdp
= &u
->getdeviceinfo
;
1859 const struct nfsd4_layout_ops
*ops
;
1860 struct nfsd4_deviceid_map
*map
;
1861 struct svc_export
*exp
;
1864 dprintk("%s: layout_type %u dev_id [0x%llx:0x%x] maxcnt %u\n",
1866 gdp
->gd_layout_type
,
1867 gdp
->gd_devid
.fsid_idx
, gdp
->gd_devid
.generation
,
1870 map
= nfsd4_find_devid_map(gdp
->gd_devid
.fsid_idx
);
1872 dprintk("%s: couldn't find device ID to export mapping!\n",
1874 return nfserr_noent
;
1877 exp
= rqst_exp_find(rqstp
, map
->fsid_type
, map
->fsid
);
1879 dprintk("%s: could not find device id\n", __func__
);
1880 return nfserr_noent
;
1883 nfserr
= nfserr_layoutunavailable
;
1884 ops
= nfsd4_layout_verify(exp
, gdp
->gd_layout_type
);
1889 if (gdp
->gd_maxcount
!= 0) {
1890 nfserr
= ops
->proc_getdeviceinfo(exp
->ex_path
.mnt
->mnt_sb
,
1891 rqstp
, cstate
->session
->se_client
, gdp
);
1894 gdp
->gd_notify_types
&= ops
->notify_types
;
1901 nfsd4_getdeviceinfo_release(union nfsd4_op_u
*u
)
1903 kfree(u
->getdeviceinfo
.gd_device
);
1907 nfsd4_layoutget(struct svc_rqst
*rqstp
,
1908 struct nfsd4_compound_state
*cstate
, union nfsd4_op_u
*u
)
1910 struct nfsd4_layoutget
*lgp
= &u
->layoutget
;
1911 struct svc_fh
*current_fh
= &cstate
->current_fh
;
1912 const struct nfsd4_layout_ops
*ops
;
1913 struct nfs4_layout_stateid
*ls
;
1915 int accmode
= NFSD_MAY_READ_IF_EXEC
;
1917 switch (lgp
->lg_seg
.iomode
) {
1919 accmode
|= NFSD_MAY_READ
;
1922 accmode
|= NFSD_MAY_READ
| NFSD_MAY_WRITE
;
1925 dprintk("%s: invalid iomode %d\n",
1926 __func__
, lgp
->lg_seg
.iomode
);
1927 nfserr
= nfserr_badiomode
;
1931 nfserr
= fh_verify(rqstp
, current_fh
, 0, accmode
);
1935 nfserr
= nfserr_layoutunavailable
;
1936 ops
= nfsd4_layout_verify(current_fh
->fh_export
, lgp
->lg_layout_type
);
1941 * Verify minlength and range as per RFC5661:
1942 * o If loga_length is less than loga_minlength,
1943 * the metadata server MUST return NFS4ERR_INVAL.
1944 * o If the sum of loga_offset and loga_minlength exceeds
1945 * NFS4_UINT64_MAX, and loga_minlength is not
1946 * NFS4_UINT64_MAX, the error NFS4ERR_INVAL MUST result.
1947 * o If the sum of loga_offset and loga_length exceeds
1948 * NFS4_UINT64_MAX, and loga_length is not NFS4_UINT64_MAX,
1949 * the error NFS4ERR_INVAL MUST result.
1951 nfserr
= nfserr_inval
;
1952 if (lgp
->lg_seg
.length
< lgp
->lg_minlength
||
1953 (lgp
->lg_minlength
!= NFS4_MAX_UINT64
&&
1954 lgp
->lg_minlength
> NFS4_MAX_UINT64
- lgp
->lg_seg
.offset
) ||
1955 (lgp
->lg_seg
.length
!= NFS4_MAX_UINT64
&&
1956 lgp
->lg_seg
.length
> NFS4_MAX_UINT64
- lgp
->lg_seg
.offset
))
1958 if (lgp
->lg_seg
.length
== 0)
1961 nfserr
= nfsd4_preprocess_layout_stateid(rqstp
, cstate
, &lgp
->lg_sid
,
1962 true, lgp
->lg_layout_type
, &ls
);
1964 trace_nfsd_layout_get_lookup_fail(&lgp
->lg_sid
);
1968 nfserr
= nfserr_recallconflict
;
1969 if (atomic_read(&ls
->ls_stid
.sc_file
->fi_lo_recalls
))
1972 nfserr
= ops
->proc_layoutget(d_inode(current_fh
->fh_dentry
),
1977 nfserr
= nfsd4_insert_layout(lgp
, ls
);
1980 mutex_unlock(&ls
->ls_mutex
);
1981 nfs4_put_stid(&ls
->ls_stid
);
1987 nfsd4_layoutget_release(union nfsd4_op_u
*u
)
1989 kfree(u
->layoutget
.lg_content
);
1993 nfsd4_layoutcommit(struct svc_rqst
*rqstp
,
1994 struct nfsd4_compound_state
*cstate
, union nfsd4_op_u
*u
)
1996 struct nfsd4_layoutcommit
*lcp
= &u
->layoutcommit
;
1997 const struct nfsd4_layout_seg
*seg
= &lcp
->lc_seg
;
1998 struct svc_fh
*current_fh
= &cstate
->current_fh
;
1999 const struct nfsd4_layout_ops
*ops
;
2000 loff_t new_size
= lcp
->lc_last_wr
+ 1;
2001 struct inode
*inode
;
2002 struct nfs4_layout_stateid
*ls
;
2005 nfserr
= fh_verify(rqstp
, current_fh
, 0, NFSD_MAY_WRITE
);
2009 nfserr
= nfserr_layoutunavailable
;
2010 ops
= nfsd4_layout_verify(current_fh
->fh_export
, lcp
->lc_layout_type
);
2013 inode
= d_inode(current_fh
->fh_dentry
);
2015 nfserr
= nfserr_inval
;
2016 if (new_size
<= seg
->offset
) {
2017 dprintk("pnfsd: last write before layout segment\n");
2020 if (new_size
> seg
->offset
+ seg
->length
) {
2021 dprintk("pnfsd: last write beyond layout segment\n");
2024 if (!lcp
->lc_newoffset
&& new_size
> i_size_read(inode
)) {
2025 dprintk("pnfsd: layoutcommit beyond EOF\n");
2029 nfserr
= nfsd4_preprocess_layout_stateid(rqstp
, cstate
, &lcp
->lc_sid
,
2030 false, lcp
->lc_layout_type
,
2033 trace_nfsd_layout_commit_lookup_fail(&lcp
->lc_sid
);
2034 /* fixup error code as per RFC5661 */
2035 if (nfserr
== nfserr_bad_stateid
)
2036 nfserr
= nfserr_badlayout
;
2040 /* LAYOUTCOMMIT does not require any serialization */
2041 mutex_unlock(&ls
->ls_mutex
);
2043 if (new_size
> i_size_read(inode
)) {
2044 lcp
->lc_size_chg
= 1;
2045 lcp
->lc_newsize
= new_size
;
2047 lcp
->lc_size_chg
= 0;
2050 nfserr
= ops
->proc_layoutcommit(inode
, lcp
);
2051 nfs4_put_stid(&ls
->ls_stid
);
2057 nfsd4_layoutreturn(struct svc_rqst
*rqstp
,
2058 struct nfsd4_compound_state
*cstate
, union nfsd4_op_u
*u
)
2060 struct nfsd4_layoutreturn
*lrp
= &u
->layoutreturn
;
2061 struct svc_fh
*current_fh
= &cstate
->current_fh
;
2064 nfserr
= fh_verify(rqstp
, current_fh
, 0, NFSD_MAY_NOP
);
2068 nfserr
= nfserr_layoutunavailable
;
2069 if (!nfsd4_layout_verify(current_fh
->fh_export
, lrp
->lr_layout_type
))
2072 switch (lrp
->lr_seg
.iomode
) {
2078 dprintk("%s: invalid iomode %d\n", __func__
,
2079 lrp
->lr_seg
.iomode
);
2080 nfserr
= nfserr_inval
;
2084 switch (lrp
->lr_return_type
) {
2086 nfserr
= nfsd4_return_file_layouts(rqstp
, cstate
, lrp
);
2090 nfserr
= nfsd4_return_client_layouts(rqstp
, cstate
, lrp
);
2093 dprintk("%s: invalid return_type %d\n", __func__
,
2094 lrp
->lr_return_type
);
2095 nfserr
= nfserr_inval
;
2101 #endif /* CONFIG_NFSD_PNFS */
2104 nfsd4_getxattr(struct svc_rqst
*rqstp
, struct nfsd4_compound_state
*cstate
,
2105 union nfsd4_op_u
*u
)
2107 struct nfsd4_getxattr
*getxattr
= &u
->getxattr
;
2109 return nfsd_getxattr(rqstp
, &cstate
->current_fh
,
2110 getxattr
->getxa_name
, &getxattr
->getxa_buf
,
2111 &getxattr
->getxa_len
);
2115 nfsd4_setxattr(struct svc_rqst
*rqstp
, struct nfsd4_compound_state
*cstate
,
2116 union nfsd4_op_u
*u
)
2118 struct nfsd4_setxattr
*setxattr
= &u
->setxattr
;
2121 if (opens_in_grace(SVC_NET(rqstp
)))
2122 return nfserr_grace
;
2124 ret
= nfsd_setxattr(rqstp
, &cstate
->current_fh
, setxattr
->setxa_name
,
2125 setxattr
->setxa_buf
, setxattr
->setxa_len
,
2126 setxattr
->setxa_flags
);
2129 set_change_info(&setxattr
->setxa_cinfo
, &cstate
->current_fh
);
2135 nfsd4_listxattrs(struct svc_rqst
*rqstp
, struct nfsd4_compound_state
*cstate
,
2136 union nfsd4_op_u
*u
)
2139 * Get the entire list, then copy out only the user attributes
2140 * in the encode function.
2142 return nfsd_listxattr(rqstp
, &cstate
->current_fh
,
2143 &u
->listxattrs
.lsxa_buf
, &u
->listxattrs
.lsxa_len
);
2147 nfsd4_removexattr(struct svc_rqst
*rqstp
, struct nfsd4_compound_state
*cstate
,
2148 union nfsd4_op_u
*u
)
2150 struct nfsd4_removexattr
*removexattr
= &u
->removexattr
;
2153 if (opens_in_grace(SVC_NET(rqstp
)))
2154 return nfserr_grace
;
2156 ret
= nfsd_removexattr(rqstp
, &cstate
->current_fh
,
2157 removexattr
->rmxa_name
);
2160 set_change_info(&removexattr
->rmxa_cinfo
, &cstate
->current_fh
);
2169 nfsd4_proc_null(struct svc_rqst
*rqstp
)
2174 static inline void nfsd4_increment_op_stats(u32 opnum
)
2176 if (opnum
>= FIRST_NFS4_OP
&& opnum
<= LAST_NFS4_OP
)
2177 nfsdstats
.nfs4_opcount
[opnum
]++;
2180 static const struct nfsd4_operation nfsd4_ops
[];
2182 static const char *nfsd4_op_name(unsigned opnum
);
2185 * Enforce NFSv4.1 COMPOUND ordering rules:
2187 * Also note, enforced elsewhere:
2188 * - SEQUENCE other than as first op results in
2189 * NFS4ERR_SEQUENCE_POS. (Enforced in nfsd4_sequence().)
2190 * - BIND_CONN_TO_SESSION must be the only op in its compound.
2191 * (Enforced in nfsd4_bind_conn_to_session().)
2192 * - DESTROY_SESSION must be the final operation in a compound, if
2193 * sessionid's in SEQUENCE and DESTROY_SESSION are the same.
2194 * (Enforced in nfsd4_destroy_session().)
2196 static __be32
nfs41_check_op_ordering(struct nfsd4_compoundargs
*args
)
2198 struct nfsd4_op
*first_op
= &args
->ops
[0];
2200 /* These ordering requirements don't apply to NFSv4.0: */
2201 if (args
->minorversion
== 0)
2203 /* This is weird, but OK, not our problem: */
2204 if (args
->opcnt
== 0)
2206 if (first_op
->status
== nfserr_op_illegal
)
2208 if (!(nfsd4_ops
[first_op
->opnum
].op_flags
& ALLOWED_AS_FIRST_OP
))
2209 return nfserr_op_not_in_session
;
2210 if (first_op
->opnum
== OP_SEQUENCE
)
2213 * So first_op is something allowed outside a session, like
2214 * EXCHANGE_ID; but then it has to be the only op in the
2217 if (args
->opcnt
!= 1)
2218 return nfserr_not_only_op
;
2222 const struct nfsd4_operation
*OPDESC(struct nfsd4_op
*op
)
2224 return &nfsd4_ops
[op
->opnum
];
2227 bool nfsd4_cache_this_op(struct nfsd4_op
*op
)
2229 if (op
->opnum
== OP_ILLEGAL
)
2231 return OPDESC(op
)->op_flags
& OP_CACHEME
;
2234 static bool need_wrongsec_check(struct svc_rqst
*rqstp
)
2236 struct nfsd4_compoundres
*resp
= rqstp
->rq_resp
;
2237 struct nfsd4_compoundargs
*argp
= rqstp
->rq_argp
;
2238 struct nfsd4_op
*this = &argp
->ops
[resp
->opcnt
- 1];
2239 struct nfsd4_op
*next
= &argp
->ops
[resp
->opcnt
];
2240 const struct nfsd4_operation
*thisd
= OPDESC(this);
2241 const struct nfsd4_operation
*nextd
;
2244 * Most ops check wronsec on our own; only the putfh-like ops
2245 * have special rules.
2247 if (!(thisd
->op_flags
& OP_IS_PUTFH_LIKE
))
2250 * rfc 5661 2.6.3.1.1.6: don't bother erroring out a
2251 * put-filehandle operation if we're not going to use the
2254 if (argp
->opcnt
== resp
->opcnt
)
2256 if (next
->opnum
== OP_ILLEGAL
)
2258 nextd
= OPDESC(next
);
2260 * Rest of 2.6.3.1.1: certain operations will return WRONGSEC
2261 * errors themselves as necessary; others should check for them
2264 return !(nextd
->op_flags
& OP_HANDLES_WRONGSEC
);
2267 static void svcxdr_init_encode(struct svc_rqst
*rqstp
,
2268 struct nfsd4_compoundres
*resp
)
2270 struct xdr_stream
*xdr
= &resp
->xdr
;
2271 struct xdr_buf
*buf
= &rqstp
->rq_res
;
2272 struct kvec
*head
= buf
->head
;
2276 xdr
->p
= head
->iov_base
+ head
->iov_len
;
2277 xdr
->end
= head
->iov_base
+ PAGE_SIZE
- rqstp
->rq_auth_slack
;
2278 /* Tail and page_len should be zero at this point: */
2279 buf
->len
= buf
->head
[0].iov_len
;
2280 xdr_reset_scratch_buffer(xdr
);
2281 xdr
->page_ptr
= buf
->pages
- 1;
2282 buf
->buflen
= PAGE_SIZE
* (1 + rqstp
->rq_page_end
- buf
->pages
)
2283 - rqstp
->rq_auth_slack
;
2286 #ifdef CONFIG_NFSD_V4_2_INTER_SSC
2288 check_if_stalefh_allowed(struct nfsd4_compoundargs
*args
)
2290 struct nfsd4_op
*op
, *current_op
= NULL
, *saved_op
= NULL
;
2291 struct nfsd4_copy
*copy
;
2292 struct nfsd4_putfh
*putfh
;
2295 /* traverse all operation and if it's a COPY compound, mark the
2296 * source filehandle to skip verification
2298 for (i
= 0; i
< args
->opcnt
; i
++) {
2300 if (op
->opnum
== OP_PUTFH
)
2302 else if (op
->opnum
== OP_SAVEFH
)
2303 saved_op
= current_op
;
2304 else if (op
->opnum
== OP_RESTOREFH
)
2305 current_op
= saved_op
;
2306 else if (op
->opnum
== OP_COPY
) {
2307 copy
= (struct nfsd4_copy
*)&op
->u
;
2309 op
->status
= nfserr_nofilehandle
;
2312 putfh
= (struct nfsd4_putfh
*)&saved_op
->u
;
2313 if (!copy
->cp_intra
)
2314 putfh
->no_verify
= true;
2320 check_if_stalefh_allowed(struct nfsd4_compoundargs
*args
)
2329 nfsd4_proc_compound(struct svc_rqst
*rqstp
)
2331 struct nfsd4_compoundargs
*args
= rqstp
->rq_argp
;
2332 struct nfsd4_compoundres
*resp
= rqstp
->rq_resp
;
2333 struct nfsd4_op
*op
;
2334 struct nfsd4_compound_state
*cstate
= &resp
->cstate
;
2335 struct svc_fh
*current_fh
= &cstate
->current_fh
;
2336 struct svc_fh
*save_fh
= &cstate
->save_fh
;
2337 struct nfsd_net
*nn
= net_generic(SVC_NET(rqstp
), nfsd_net_id
);
2340 svcxdr_init_encode(rqstp
, resp
);
2341 resp
->tagp
= resp
->xdr
.p
;
2342 /* reserve space for: taglen, tag, and opcnt */
2343 xdr_reserve_space(&resp
->xdr
, 8 + args
->taglen
);
2344 resp
->taglen
= args
->taglen
;
2345 resp
->tag
= args
->tag
;
2346 resp
->rqstp
= rqstp
;
2347 cstate
->minorversion
= args
->minorversion
;
2348 fh_init(current_fh
, NFS4_FHSIZE
);
2349 fh_init(save_fh
, NFS4_FHSIZE
);
2351 * Don't use the deferral mechanism for NFSv4; compounds make it
2352 * too hard to avoid non-idempotency problems.
2354 clear_bit(RQ_USEDEFERRAL
, &rqstp
->rq_flags
);
2357 * According to RFC3010, this takes precedence over all other errors.
2359 status
= nfserr_minor_vers_mismatch
;
2360 if (nfsd_minorversion(nn
, args
->minorversion
, NFSD_TEST
) <= 0)
2362 status
= nfserr_resource
;
2363 if (args
->opcnt
> NFSD_MAX_OPS_PER_COMPOUND
)
2366 status
= nfs41_check_op_ordering(args
);
2369 op
->status
= status
;
2373 check_if_stalefh_allowed(args
);
2375 rqstp
->rq_lease_breaker
= (void **)&cstate
->clp
;
2377 trace_nfsd_compound(rqstp
, args
->opcnt
);
2378 while (!status
&& resp
->opcnt
< args
->opcnt
) {
2379 op
= &args
->ops
[resp
->opcnt
++];
2382 * The XDR decode routines may have pre-set op->status;
2383 * for example, if there is a miscellaneous XDR error
2384 * it will be set to nfserr_bad_xdr.
2387 if (op
->opnum
== OP_OPEN
)
2388 op
->status
= nfsd4_open_omfg(rqstp
, cstate
, op
);
2391 if (!current_fh
->fh_dentry
&&
2392 !HAS_FH_FLAG(current_fh
, NFSD4_FH_FOREIGN
)) {
2393 if (!(op
->opdesc
->op_flags
& ALLOWED_WITHOUT_FH
)) {
2394 op
->status
= nfserr_nofilehandle
;
2397 } else if (current_fh
->fh_export
&&
2398 current_fh
->fh_export
->ex_fslocs
.migrated
&&
2399 !(op
->opdesc
->op_flags
& ALLOWED_ON_ABSENT_FS
)) {
2400 op
->status
= nfserr_moved
;
2404 fh_clear_wcc(current_fh
);
2406 /* If op is non-idempotent */
2407 if (op
->opdesc
->op_flags
& OP_MODIFIES_SOMETHING
) {
2409 * Don't execute this op if we couldn't encode a
2412 u32 plen
= op
->opdesc
->op_rsize_bop(rqstp
, op
);
2414 * Plus if there's another operation, make sure
2415 * we'll have space to at least encode an error:
2417 if (resp
->opcnt
< args
->opcnt
)
2418 plen
+= COMPOUND_ERR_SLACK_SPACE
;
2419 op
->status
= nfsd4_check_resp_size(resp
, plen
);
2425 if (op
->opdesc
->op_get_currentstateid
)
2426 op
->opdesc
->op_get_currentstateid(cstate
, &op
->u
);
2427 op
->status
= op
->opdesc
->op_func(rqstp
, cstate
, &op
->u
);
2429 /* Only from SEQUENCE */
2430 if (cstate
->status
== nfserr_replay_cache
) {
2431 dprintk("%s NFS4.1 replay from cache\n", __func__
);
2432 status
= op
->status
;
2436 if (op
->opdesc
->op_set_currentstateid
)
2437 op
->opdesc
->op_set_currentstateid(cstate
, &op
->u
);
2439 if (op
->opdesc
->op_flags
& OP_CLEAR_STATEID
)
2440 clear_current_stateid(cstate
);
2442 if (current_fh
->fh_export
&&
2443 need_wrongsec_check(rqstp
))
2444 op
->status
= check_nfsd_access(current_fh
->fh_export
, rqstp
);
2447 if (op
->status
== nfserr_replay_me
) {
2448 op
->replay
= &cstate
->replay_owner
->so_replay
;
2449 nfsd4_encode_replay(&resp
->xdr
, op
);
2450 status
= op
->status
= op
->replay
->rp_status
;
2452 nfsd4_encode_operation(resp
, op
);
2453 status
= op
->status
;
2456 trace_nfsd_compound_status(args
->opcnt
, resp
->opcnt
, status
,
2457 nfsd4_op_name(op
->opnum
));
2459 nfsd4_cstate_clear_replay(cstate
);
2460 nfsd4_increment_op_stats(op
->opnum
);
2465 BUG_ON(cstate
->replay_owner
);
2467 cstate
->status
= status
;
2468 /* Reset deferral mechanism for RPC deferrals */
2469 set_bit(RQ_USEDEFERRAL
, &rqstp
->rq_flags
);
2473 #define op_encode_hdr_size (2)
2474 #define op_encode_stateid_maxsz (XDR_QUADLEN(NFS4_STATEID_SIZE))
2475 #define op_encode_verifier_maxsz (XDR_QUADLEN(NFS4_VERIFIER_SIZE))
2476 #define op_encode_change_info_maxsz (5)
2477 #define nfs4_fattr_bitmap_maxsz (4)
2479 /* We'll fall back on returning no lockowner if run out of space: */
2480 #define op_encode_lockowner_maxsz (0)
2481 #define op_encode_lock_denied_maxsz (8 + op_encode_lockowner_maxsz)
2483 #define nfs4_owner_maxsz (1 + XDR_QUADLEN(IDMAP_NAMESZ))
2485 #define op_encode_ace_maxsz (3 + nfs4_owner_maxsz)
2486 #define op_encode_delegation_maxsz (1 + op_encode_stateid_maxsz + 1 + \
2487 op_encode_ace_maxsz)
2489 #define op_encode_channel_attrs_maxsz (6 + 1 + 1)
2491 static inline u32
nfsd4_only_status_rsize(struct svc_rqst
*rqstp
, struct nfsd4_op
*op
)
2493 return (op_encode_hdr_size
) * sizeof(__be32
);
2496 static inline u32
nfsd4_status_stateid_rsize(struct svc_rqst
*rqstp
, struct nfsd4_op
*op
)
2498 return (op_encode_hdr_size
+ op_encode_stateid_maxsz
)* sizeof(__be32
);
2501 static inline u32
nfsd4_access_rsize(struct svc_rqst
*rqstp
, struct nfsd4_op
*op
)
2503 /* ac_supported, ac_resp_access */
2504 return (op_encode_hdr_size
+ 2)* sizeof(__be32
);
2507 static inline u32
nfsd4_commit_rsize(struct svc_rqst
*rqstp
, struct nfsd4_op
*op
)
2509 return (op_encode_hdr_size
+ op_encode_verifier_maxsz
) * sizeof(__be32
);
2512 static inline u32
nfsd4_create_rsize(struct svc_rqst
*rqstp
, struct nfsd4_op
*op
)
2514 return (op_encode_hdr_size
+ op_encode_change_info_maxsz
2515 + nfs4_fattr_bitmap_maxsz
) * sizeof(__be32
);
2519 * Note since this is an idempotent operation we won't insist on failing
2520 * the op prematurely if the estimate is too large. We may turn off splice
2521 * reads unnecessarily.
2523 static inline u32
nfsd4_getattr_rsize(struct svc_rqst
*rqstp
,
2524 struct nfsd4_op
*op
)
2526 u32
*bmap
= op
->u
.getattr
.ga_bmval
;
2527 u32 bmap0
= bmap
[0], bmap1
= bmap
[1], bmap2
= bmap
[2];
2530 if (bmap0
& FATTR4_WORD0_ACL
)
2531 return svc_max_payload(rqstp
);
2532 if (bmap0
& FATTR4_WORD0_FS_LOCATIONS
)
2533 return svc_max_payload(rqstp
);
2535 if (bmap1
& FATTR4_WORD1_OWNER
) {
2536 ret
+= IDMAP_NAMESZ
+ 4;
2537 bmap1
&= ~FATTR4_WORD1_OWNER
;
2539 if (bmap1
& FATTR4_WORD1_OWNER_GROUP
) {
2540 ret
+= IDMAP_NAMESZ
+ 4;
2541 bmap1
&= ~FATTR4_WORD1_OWNER_GROUP
;
2543 if (bmap0
& FATTR4_WORD0_FILEHANDLE
) {
2544 ret
+= NFS4_FHSIZE
+ 4;
2545 bmap0
&= ~FATTR4_WORD0_FILEHANDLE
;
2547 if (bmap2
& FATTR4_WORD2_SECURITY_LABEL
) {
2548 ret
+= NFS4_MAXLABELLEN
+ 12;
2549 bmap2
&= ~FATTR4_WORD2_SECURITY_LABEL
;
2552 * Largest of remaining attributes are 16 bytes (e.g.,
2553 * supported_attributes)
2555 ret
+= 16 * (hweight32(bmap0
) + hweight32(bmap1
) + hweight32(bmap2
));
2556 /* bitmask, length */
2561 static inline u32
nfsd4_getfh_rsize(struct svc_rqst
*rqstp
, struct nfsd4_op
*op
)
2563 return (op_encode_hdr_size
+ 1) * sizeof(__be32
) + NFS4_FHSIZE
;
2566 static inline u32
nfsd4_link_rsize(struct svc_rqst
*rqstp
, struct nfsd4_op
*op
)
2568 return (op_encode_hdr_size
+ op_encode_change_info_maxsz
)
2572 static inline u32
nfsd4_lock_rsize(struct svc_rqst
*rqstp
, struct nfsd4_op
*op
)
2574 return (op_encode_hdr_size
+ op_encode_lock_denied_maxsz
)
2578 static inline u32
nfsd4_open_rsize(struct svc_rqst
*rqstp
, struct nfsd4_op
*op
)
2580 return (op_encode_hdr_size
+ op_encode_stateid_maxsz
2581 + op_encode_change_info_maxsz
+ 1
2582 + nfs4_fattr_bitmap_maxsz
2583 + op_encode_delegation_maxsz
) * sizeof(__be32
);
2586 static inline u32
nfsd4_read_rsize(struct svc_rqst
*rqstp
, struct nfsd4_op
*op
)
2588 u32 maxcount
= 0, rlen
= 0;
2590 maxcount
= svc_max_payload(rqstp
);
2591 rlen
= min(op
->u
.read
.rd_length
, maxcount
);
2593 return (op_encode_hdr_size
+ 2 + XDR_QUADLEN(rlen
)) * sizeof(__be32
);
2596 static inline u32
nfsd4_read_plus_rsize(struct svc_rqst
*rqstp
, struct nfsd4_op
*op
)
2598 u32 maxcount
= svc_max_payload(rqstp
);
2599 u32 rlen
= min(op
->u
.read
.rd_length
, maxcount
);
2601 * If we detect that the file changed during hole encoding, then we
2602 * recover by encoding the remaining reply as data. This means we need
2603 * to set aside enough room to encode two data segments.
2605 u32 seg_len
= 2 * (1 + 2 + 1);
2607 return (op_encode_hdr_size
+ 2 + seg_len
+ XDR_QUADLEN(rlen
)) * sizeof(__be32
);
2610 static inline u32
nfsd4_readdir_rsize(struct svc_rqst
*rqstp
, struct nfsd4_op
*op
)
2612 u32 maxcount
= 0, rlen
= 0;
2614 maxcount
= svc_max_payload(rqstp
);
2615 rlen
= min(op
->u
.readdir
.rd_maxcount
, maxcount
);
2617 return (op_encode_hdr_size
+ op_encode_verifier_maxsz
+
2618 XDR_QUADLEN(rlen
)) * sizeof(__be32
);
2621 static inline u32
nfsd4_readlink_rsize(struct svc_rqst
*rqstp
, struct nfsd4_op
*op
)
2623 return (op_encode_hdr_size
+ 1) * sizeof(__be32
) + PAGE_SIZE
;
2626 static inline u32
nfsd4_remove_rsize(struct svc_rqst
*rqstp
, struct nfsd4_op
*op
)
2628 return (op_encode_hdr_size
+ op_encode_change_info_maxsz
)
2632 static inline u32
nfsd4_rename_rsize(struct svc_rqst
*rqstp
, struct nfsd4_op
*op
)
2634 return (op_encode_hdr_size
+ op_encode_change_info_maxsz
2635 + op_encode_change_info_maxsz
) * sizeof(__be32
);
2638 static inline u32
nfsd4_sequence_rsize(struct svc_rqst
*rqstp
,
2639 struct nfsd4_op
*op
)
2641 return (op_encode_hdr_size
2642 + XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN
) + 5) * sizeof(__be32
);
2645 static inline u32
nfsd4_test_stateid_rsize(struct svc_rqst
*rqstp
, struct nfsd4_op
*op
)
2647 return (op_encode_hdr_size
+ 1 + op
->u
.test_stateid
.ts_num_ids
)
2651 static inline u32
nfsd4_setattr_rsize(struct svc_rqst
*rqstp
, struct nfsd4_op
*op
)
2653 return (op_encode_hdr_size
+ nfs4_fattr_bitmap_maxsz
) * sizeof(__be32
);
2656 static inline u32
nfsd4_secinfo_rsize(struct svc_rqst
*rqstp
, struct nfsd4_op
*op
)
2658 return (op_encode_hdr_size
+ RPC_AUTH_MAXFLAVOR
*
2659 (4 + XDR_QUADLEN(GSS_OID_MAX_LEN
))) * sizeof(__be32
);
2662 static inline u32
nfsd4_setclientid_rsize(struct svc_rqst
*rqstp
, struct nfsd4_op
*op
)
2664 return (op_encode_hdr_size
+ 2 + XDR_QUADLEN(NFS4_VERIFIER_SIZE
)) *
2668 static inline u32
nfsd4_write_rsize(struct svc_rqst
*rqstp
, struct nfsd4_op
*op
)
2670 return (op_encode_hdr_size
+ 2 + op_encode_verifier_maxsz
) * sizeof(__be32
);
2673 static inline u32
nfsd4_exchange_id_rsize(struct svc_rqst
*rqstp
, struct nfsd4_op
*op
)
2675 return (op_encode_hdr_size
+ 2 + 1 + /* eir_clientid, eir_sequenceid */\
2676 1 + 1 + /* eir_flags, spr_how */\
2677 4 + /* spo_must_enforce & _allow with bitmap */\
2678 2 + /*eir_server_owner.so_minor_id */\
2679 /* eir_server_owner.so_major_id<> */\
2680 XDR_QUADLEN(NFS4_OPAQUE_LIMIT
) + 1 +\
2681 /* eir_server_scope<> */\
2682 XDR_QUADLEN(NFS4_OPAQUE_LIMIT
) + 1 +\
2683 1 + /* eir_server_impl_id array length */\
2684 0 /* ignored eir_server_impl_id contents */) * sizeof(__be32
);
2687 static inline u32
nfsd4_bind_conn_to_session_rsize(struct svc_rqst
*rqstp
, struct nfsd4_op
*op
)
2689 return (op_encode_hdr_size
+ \
2690 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN
) + /* bctsr_sessid */\
2691 2 /* bctsr_dir, use_conn_in_rdma_mode */) * sizeof(__be32
);
2694 static inline u32
nfsd4_create_session_rsize(struct svc_rqst
*rqstp
, struct nfsd4_op
*op
)
2696 return (op_encode_hdr_size
+ \
2697 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN
) + /* sessionid */\
2698 2 + /* csr_sequence, csr_flags */\
2699 op_encode_channel_attrs_maxsz
+ \
2700 op_encode_channel_attrs_maxsz
) * sizeof(__be32
);
2703 static inline u32
nfsd4_copy_rsize(struct svc_rqst
*rqstp
, struct nfsd4_op
*op
)
2705 return (op_encode_hdr_size
+
2706 1 /* wr_callback */ +
2707 op_encode_stateid_maxsz
/* wr_callback */ +
2709 1 /* wr_committed */ +
2710 op_encode_verifier_maxsz
+
2711 1 /* cr_consecutive */ +
2712 1 /* cr_synchronous */) * sizeof(__be32
);
2715 static inline u32
nfsd4_offload_status_rsize(struct svc_rqst
*rqstp
,
2716 struct nfsd4_op
*op
)
2718 return (op_encode_hdr_size
+
2720 1 /* osr_complete<1> optional 0 for now */) * sizeof(__be32
);
2723 static inline u32
nfsd4_copy_notify_rsize(struct svc_rqst
*rqstp
,
2724 struct nfsd4_op
*op
)
2726 return (op_encode_hdr_size
+
2727 3 /* cnr_lease_time */ +
2728 1 /* We support one cnr_source_server */ +
2729 1 /* cnr_stateid seq */ +
2730 op_encode_stateid_maxsz
/* cnr_stateid */ +
2731 1 /* num cnr_source_server*/ +
2734 XDR_QUADLEN(NFS4_OPAQUE_LIMIT
) /*nl4_loc + nl4_loc_sz */)
2738 #ifdef CONFIG_NFSD_PNFS
2739 static inline u32
nfsd4_getdeviceinfo_rsize(struct svc_rqst
*rqstp
, struct nfsd4_op
*op
)
2741 u32 maxcount
= 0, rlen
= 0;
2743 maxcount
= svc_max_payload(rqstp
);
2744 rlen
= min(op
->u
.getdeviceinfo
.gd_maxcount
, maxcount
);
2746 return (op_encode_hdr_size
+
2747 1 /* gd_layout_type*/ +
2749 2 /* gd_notify_types */) * sizeof(__be32
);
2753 * At this stage we don't really know what layout driver will handle the request,
2754 * so we need to define an arbitrary upper bound here.
2756 #define MAX_LAYOUT_SIZE 128
2757 static inline u32
nfsd4_layoutget_rsize(struct svc_rqst
*rqstp
, struct nfsd4_op
*op
)
2759 return (op_encode_hdr_size
+
2760 1 /* logr_return_on_close */ +
2761 op_encode_stateid_maxsz
+
2762 1 /* nr of layouts */ +
2763 MAX_LAYOUT_SIZE
) * sizeof(__be32
);
2766 static inline u32
nfsd4_layoutcommit_rsize(struct svc_rqst
*rqstp
, struct nfsd4_op
*op
)
2768 return (op_encode_hdr_size
+
2769 1 /* locr_newsize */ +
2770 2 /* ns_size */) * sizeof(__be32
);
2773 static inline u32
nfsd4_layoutreturn_rsize(struct svc_rqst
*rqstp
, struct nfsd4_op
*op
)
2775 return (op_encode_hdr_size
+
2776 1 /* lrs_stateid */ +
2777 op_encode_stateid_maxsz
) * sizeof(__be32
);
2779 #endif /* CONFIG_NFSD_PNFS */
2782 static inline u32
nfsd4_seek_rsize(struct svc_rqst
*rqstp
, struct nfsd4_op
*op
)
2784 return (op_encode_hdr_size
+ 3) * sizeof(__be32
);
2787 static inline u32
nfsd4_getxattr_rsize(struct svc_rqst
*rqstp
,
2788 struct nfsd4_op
*op
)
2792 maxcount
= svc_max_payload(rqstp
);
2793 rlen
= min_t(u32
, XATTR_SIZE_MAX
, maxcount
);
2795 return (op_encode_hdr_size
+ 1 + XDR_QUADLEN(rlen
)) * sizeof(__be32
);
2798 static inline u32
nfsd4_setxattr_rsize(struct svc_rqst
*rqstp
,
2799 struct nfsd4_op
*op
)
2801 return (op_encode_hdr_size
+ op_encode_change_info_maxsz
)
2804 static inline u32
nfsd4_listxattrs_rsize(struct svc_rqst
*rqstp
,
2805 struct nfsd4_op
*op
)
2809 maxcount
= svc_max_payload(rqstp
);
2810 rlen
= min(op
->u
.listxattrs
.lsxa_maxcount
, maxcount
);
2812 return (op_encode_hdr_size
+ 4 + XDR_QUADLEN(rlen
)) * sizeof(__be32
);
2815 static inline u32
nfsd4_removexattr_rsize(struct svc_rqst
*rqstp
,
2816 struct nfsd4_op
*op
)
2818 return (op_encode_hdr_size
+ op_encode_change_info_maxsz
)
2823 static const struct nfsd4_operation nfsd4_ops
[] = {
2825 .op_func
= nfsd4_access
,
2826 .op_name
= "OP_ACCESS",
2827 .op_rsize_bop
= nfsd4_access_rsize
,
2830 .op_func
= nfsd4_close
,
2831 .op_flags
= OP_MODIFIES_SOMETHING
,
2832 .op_name
= "OP_CLOSE",
2833 .op_rsize_bop
= nfsd4_status_stateid_rsize
,
2834 .op_get_currentstateid
= nfsd4_get_closestateid
,
2835 .op_set_currentstateid
= nfsd4_set_closestateid
,
2838 .op_func
= nfsd4_commit
,
2839 .op_flags
= OP_MODIFIES_SOMETHING
,
2840 .op_name
= "OP_COMMIT",
2841 .op_rsize_bop
= nfsd4_commit_rsize
,
2844 .op_func
= nfsd4_create
,
2845 .op_flags
= OP_MODIFIES_SOMETHING
| OP_CACHEME
| OP_CLEAR_STATEID
,
2846 .op_name
= "OP_CREATE",
2847 .op_rsize_bop
= nfsd4_create_rsize
,
2849 [OP_DELEGRETURN
] = {
2850 .op_func
= nfsd4_delegreturn
,
2851 .op_flags
= OP_MODIFIES_SOMETHING
,
2852 .op_name
= "OP_DELEGRETURN",
2853 .op_rsize_bop
= nfsd4_only_status_rsize
,
2854 .op_get_currentstateid
= nfsd4_get_delegreturnstateid
,
2857 .op_func
= nfsd4_getattr
,
2858 .op_flags
= ALLOWED_ON_ABSENT_FS
,
2859 .op_rsize_bop
= nfsd4_getattr_rsize
,
2860 .op_name
= "OP_GETATTR",
2863 .op_func
= nfsd4_getfh
,
2864 .op_name
= "OP_GETFH",
2865 .op_rsize_bop
= nfsd4_getfh_rsize
,
2868 .op_func
= nfsd4_link
,
2869 .op_flags
= ALLOWED_ON_ABSENT_FS
| OP_MODIFIES_SOMETHING
2871 .op_name
= "OP_LINK",
2872 .op_rsize_bop
= nfsd4_link_rsize
,
2875 .op_func
= nfsd4_lock
,
2876 .op_flags
= OP_MODIFIES_SOMETHING
|
2877 OP_NONTRIVIAL_ERROR_ENCODE
,
2878 .op_name
= "OP_LOCK",
2879 .op_rsize_bop
= nfsd4_lock_rsize
,
2880 .op_set_currentstateid
= nfsd4_set_lockstateid
,
2883 .op_func
= nfsd4_lockt
,
2884 .op_flags
= OP_NONTRIVIAL_ERROR_ENCODE
,
2885 .op_name
= "OP_LOCKT",
2886 .op_rsize_bop
= nfsd4_lock_rsize
,
2889 .op_func
= nfsd4_locku
,
2890 .op_flags
= OP_MODIFIES_SOMETHING
,
2891 .op_name
= "OP_LOCKU",
2892 .op_rsize_bop
= nfsd4_status_stateid_rsize
,
2893 .op_get_currentstateid
= nfsd4_get_lockustateid
,
2896 .op_func
= nfsd4_lookup
,
2897 .op_flags
= OP_HANDLES_WRONGSEC
| OP_CLEAR_STATEID
,
2898 .op_name
= "OP_LOOKUP",
2899 .op_rsize_bop
= nfsd4_only_status_rsize
,
2902 .op_func
= nfsd4_lookupp
,
2903 .op_flags
= OP_HANDLES_WRONGSEC
| OP_CLEAR_STATEID
,
2904 .op_name
= "OP_LOOKUPP",
2905 .op_rsize_bop
= nfsd4_only_status_rsize
,
2908 .op_func
= nfsd4_nverify
,
2909 .op_name
= "OP_NVERIFY",
2910 .op_rsize_bop
= nfsd4_only_status_rsize
,
2913 .op_func
= nfsd4_open
,
2914 .op_flags
= OP_HANDLES_WRONGSEC
| OP_MODIFIES_SOMETHING
,
2915 .op_name
= "OP_OPEN",
2916 .op_rsize_bop
= nfsd4_open_rsize
,
2917 .op_set_currentstateid
= nfsd4_set_openstateid
,
2919 [OP_OPEN_CONFIRM
] = {
2920 .op_func
= nfsd4_open_confirm
,
2921 .op_flags
= OP_MODIFIES_SOMETHING
,
2922 .op_name
= "OP_OPEN_CONFIRM",
2923 .op_rsize_bop
= nfsd4_status_stateid_rsize
,
2925 [OP_OPEN_DOWNGRADE
] = {
2926 .op_func
= nfsd4_open_downgrade
,
2927 .op_flags
= OP_MODIFIES_SOMETHING
,
2928 .op_name
= "OP_OPEN_DOWNGRADE",
2929 .op_rsize_bop
= nfsd4_status_stateid_rsize
,
2930 .op_get_currentstateid
= nfsd4_get_opendowngradestateid
,
2931 .op_set_currentstateid
= nfsd4_set_opendowngradestateid
,
2934 .op_func
= nfsd4_putfh
,
2935 .op_flags
= ALLOWED_WITHOUT_FH
| ALLOWED_ON_ABSENT_FS
2936 | OP_IS_PUTFH_LIKE
| OP_CLEAR_STATEID
,
2937 .op_name
= "OP_PUTFH",
2938 .op_rsize_bop
= nfsd4_only_status_rsize
,
2941 .op_func
= nfsd4_putrootfh
,
2942 .op_flags
= ALLOWED_WITHOUT_FH
| ALLOWED_ON_ABSENT_FS
2943 | OP_IS_PUTFH_LIKE
| OP_CLEAR_STATEID
,
2944 .op_name
= "OP_PUTPUBFH",
2945 .op_rsize_bop
= nfsd4_only_status_rsize
,
2948 .op_func
= nfsd4_putrootfh
,
2949 .op_flags
= ALLOWED_WITHOUT_FH
| ALLOWED_ON_ABSENT_FS
2950 | OP_IS_PUTFH_LIKE
| OP_CLEAR_STATEID
,
2951 .op_name
= "OP_PUTROOTFH",
2952 .op_rsize_bop
= nfsd4_only_status_rsize
,
2955 .op_func
= nfsd4_read
,
2956 .op_release
= nfsd4_read_release
,
2957 .op_name
= "OP_READ",
2958 .op_rsize_bop
= nfsd4_read_rsize
,
2959 .op_get_currentstateid
= nfsd4_get_readstateid
,
2962 .op_func
= nfsd4_readdir
,
2963 .op_name
= "OP_READDIR",
2964 .op_rsize_bop
= nfsd4_readdir_rsize
,
2967 .op_func
= nfsd4_readlink
,
2968 .op_name
= "OP_READLINK",
2969 .op_rsize_bop
= nfsd4_readlink_rsize
,
2972 .op_func
= nfsd4_remove
,
2973 .op_flags
= OP_MODIFIES_SOMETHING
| OP_CACHEME
,
2974 .op_name
= "OP_REMOVE",
2975 .op_rsize_bop
= nfsd4_remove_rsize
,
2978 .op_func
= nfsd4_rename
,
2979 .op_flags
= OP_MODIFIES_SOMETHING
| OP_CACHEME
,
2980 .op_name
= "OP_RENAME",
2981 .op_rsize_bop
= nfsd4_rename_rsize
,
2984 .op_func
= nfsd4_renew
,
2985 .op_flags
= ALLOWED_WITHOUT_FH
| ALLOWED_ON_ABSENT_FS
2986 | OP_MODIFIES_SOMETHING
,
2987 .op_name
= "OP_RENEW",
2988 .op_rsize_bop
= nfsd4_only_status_rsize
,
2992 .op_func
= nfsd4_restorefh
,
2993 .op_flags
= ALLOWED_WITHOUT_FH
| ALLOWED_ON_ABSENT_FS
2994 | OP_IS_PUTFH_LIKE
| OP_MODIFIES_SOMETHING
,
2995 .op_name
= "OP_RESTOREFH",
2996 .op_rsize_bop
= nfsd4_only_status_rsize
,
2999 .op_func
= nfsd4_savefh
,
3000 .op_flags
= OP_HANDLES_WRONGSEC
| OP_MODIFIES_SOMETHING
,
3001 .op_name
= "OP_SAVEFH",
3002 .op_rsize_bop
= nfsd4_only_status_rsize
,
3005 .op_func
= nfsd4_secinfo
,
3006 .op_release
= nfsd4_secinfo_release
,
3007 .op_flags
= OP_HANDLES_WRONGSEC
,
3008 .op_name
= "OP_SECINFO",
3009 .op_rsize_bop
= nfsd4_secinfo_rsize
,
3012 .op_func
= nfsd4_setattr
,
3013 .op_name
= "OP_SETATTR",
3014 .op_flags
= OP_MODIFIES_SOMETHING
| OP_CACHEME
3015 | OP_NONTRIVIAL_ERROR_ENCODE
,
3016 .op_rsize_bop
= nfsd4_setattr_rsize
,
3017 .op_get_currentstateid
= nfsd4_get_setattrstateid
,
3019 [OP_SETCLIENTID
] = {
3020 .op_func
= nfsd4_setclientid
,
3021 .op_flags
= ALLOWED_WITHOUT_FH
| ALLOWED_ON_ABSENT_FS
3022 | OP_MODIFIES_SOMETHING
| OP_CACHEME
3023 | OP_NONTRIVIAL_ERROR_ENCODE
,
3024 .op_name
= "OP_SETCLIENTID",
3025 .op_rsize_bop
= nfsd4_setclientid_rsize
,
3027 [OP_SETCLIENTID_CONFIRM
] = {
3028 .op_func
= nfsd4_setclientid_confirm
,
3029 .op_flags
= ALLOWED_WITHOUT_FH
| ALLOWED_ON_ABSENT_FS
3030 | OP_MODIFIES_SOMETHING
| OP_CACHEME
,
3031 .op_name
= "OP_SETCLIENTID_CONFIRM",
3032 .op_rsize_bop
= nfsd4_only_status_rsize
,
3035 .op_func
= nfsd4_verify
,
3036 .op_name
= "OP_VERIFY",
3037 .op_rsize_bop
= nfsd4_only_status_rsize
,
3040 .op_func
= nfsd4_write
,
3041 .op_flags
= OP_MODIFIES_SOMETHING
| OP_CACHEME
,
3042 .op_name
= "OP_WRITE",
3043 .op_rsize_bop
= nfsd4_write_rsize
,
3044 .op_get_currentstateid
= nfsd4_get_writestateid
,
3046 [OP_RELEASE_LOCKOWNER
] = {
3047 .op_func
= nfsd4_release_lockowner
,
3048 .op_flags
= ALLOWED_WITHOUT_FH
| ALLOWED_ON_ABSENT_FS
3049 | OP_MODIFIES_SOMETHING
,
3050 .op_name
= "OP_RELEASE_LOCKOWNER",
3051 .op_rsize_bop
= nfsd4_only_status_rsize
,
3054 /* NFSv4.1 operations */
3055 [OP_EXCHANGE_ID
] = {
3056 .op_func
= nfsd4_exchange_id
,
3057 .op_flags
= ALLOWED_WITHOUT_FH
| ALLOWED_AS_FIRST_OP
3058 | OP_MODIFIES_SOMETHING
,
3059 .op_name
= "OP_EXCHANGE_ID",
3060 .op_rsize_bop
= nfsd4_exchange_id_rsize
,
3062 [OP_BACKCHANNEL_CTL
] = {
3063 .op_func
= nfsd4_backchannel_ctl
,
3064 .op_flags
= ALLOWED_WITHOUT_FH
| OP_MODIFIES_SOMETHING
,
3065 .op_name
= "OP_BACKCHANNEL_CTL",
3066 .op_rsize_bop
= nfsd4_only_status_rsize
,
3068 [OP_BIND_CONN_TO_SESSION
] = {
3069 .op_func
= nfsd4_bind_conn_to_session
,
3070 .op_flags
= ALLOWED_WITHOUT_FH
| ALLOWED_AS_FIRST_OP
3071 | OP_MODIFIES_SOMETHING
,
3072 .op_name
= "OP_BIND_CONN_TO_SESSION",
3073 .op_rsize_bop
= nfsd4_bind_conn_to_session_rsize
,
3075 [OP_CREATE_SESSION
] = {
3076 .op_func
= nfsd4_create_session
,
3077 .op_flags
= ALLOWED_WITHOUT_FH
| ALLOWED_AS_FIRST_OP
3078 | OP_MODIFIES_SOMETHING
,
3079 .op_name
= "OP_CREATE_SESSION",
3080 .op_rsize_bop
= nfsd4_create_session_rsize
,
3082 [OP_DESTROY_SESSION
] = {
3083 .op_func
= nfsd4_destroy_session
,
3084 .op_flags
= ALLOWED_WITHOUT_FH
| ALLOWED_AS_FIRST_OP
3085 | OP_MODIFIES_SOMETHING
,
3086 .op_name
= "OP_DESTROY_SESSION",
3087 .op_rsize_bop
= nfsd4_only_status_rsize
,
3090 .op_func
= nfsd4_sequence
,
3091 .op_flags
= ALLOWED_WITHOUT_FH
| ALLOWED_AS_FIRST_OP
,
3092 .op_name
= "OP_SEQUENCE",
3093 .op_rsize_bop
= nfsd4_sequence_rsize
,
3095 [OP_DESTROY_CLIENTID
] = {
3096 .op_func
= nfsd4_destroy_clientid
,
3097 .op_flags
= ALLOWED_WITHOUT_FH
| ALLOWED_AS_FIRST_OP
3098 | OP_MODIFIES_SOMETHING
,
3099 .op_name
= "OP_DESTROY_CLIENTID",
3100 .op_rsize_bop
= nfsd4_only_status_rsize
,
3102 [OP_RECLAIM_COMPLETE
] = {
3103 .op_func
= nfsd4_reclaim_complete
,
3104 .op_flags
= ALLOWED_WITHOUT_FH
| OP_MODIFIES_SOMETHING
,
3105 .op_name
= "OP_RECLAIM_COMPLETE",
3106 .op_rsize_bop
= nfsd4_only_status_rsize
,
3108 [OP_SECINFO_NO_NAME
] = {
3109 .op_func
= nfsd4_secinfo_no_name
,
3110 .op_release
= nfsd4_secinfo_no_name_release
,
3111 .op_flags
= OP_HANDLES_WRONGSEC
,
3112 .op_name
= "OP_SECINFO_NO_NAME",
3113 .op_rsize_bop
= nfsd4_secinfo_rsize
,
3115 [OP_TEST_STATEID
] = {
3116 .op_func
= nfsd4_test_stateid
,
3117 .op_flags
= ALLOWED_WITHOUT_FH
,
3118 .op_name
= "OP_TEST_STATEID",
3119 .op_rsize_bop
= nfsd4_test_stateid_rsize
,
3121 [OP_FREE_STATEID
] = {
3122 .op_func
= nfsd4_free_stateid
,
3123 .op_flags
= ALLOWED_WITHOUT_FH
| OP_MODIFIES_SOMETHING
,
3124 .op_name
= "OP_FREE_STATEID",
3125 .op_get_currentstateid
= nfsd4_get_freestateid
,
3126 .op_rsize_bop
= nfsd4_only_status_rsize
,
3128 #ifdef CONFIG_NFSD_PNFS
3129 [OP_GETDEVICEINFO
] = {
3130 .op_func
= nfsd4_getdeviceinfo
,
3131 .op_release
= nfsd4_getdeviceinfo_release
,
3132 .op_flags
= ALLOWED_WITHOUT_FH
,
3133 .op_name
= "OP_GETDEVICEINFO",
3134 .op_rsize_bop
= nfsd4_getdeviceinfo_rsize
,
3137 .op_func
= nfsd4_layoutget
,
3138 .op_release
= nfsd4_layoutget_release
,
3139 .op_flags
= OP_MODIFIES_SOMETHING
,
3140 .op_name
= "OP_LAYOUTGET",
3141 .op_rsize_bop
= nfsd4_layoutget_rsize
,
3143 [OP_LAYOUTCOMMIT
] = {
3144 .op_func
= nfsd4_layoutcommit
,
3145 .op_flags
= OP_MODIFIES_SOMETHING
,
3146 .op_name
= "OP_LAYOUTCOMMIT",
3147 .op_rsize_bop
= nfsd4_layoutcommit_rsize
,
3149 [OP_LAYOUTRETURN
] = {
3150 .op_func
= nfsd4_layoutreturn
,
3151 .op_flags
= OP_MODIFIES_SOMETHING
,
3152 .op_name
= "OP_LAYOUTRETURN",
3153 .op_rsize_bop
= nfsd4_layoutreturn_rsize
,
3155 #endif /* CONFIG_NFSD_PNFS */
3157 /* NFSv4.2 operations */
3159 .op_func
= nfsd4_allocate
,
3160 .op_flags
= OP_MODIFIES_SOMETHING
,
3161 .op_name
= "OP_ALLOCATE",
3162 .op_rsize_bop
= nfsd4_only_status_rsize
,
3165 .op_func
= nfsd4_deallocate
,
3166 .op_flags
= OP_MODIFIES_SOMETHING
,
3167 .op_name
= "OP_DEALLOCATE",
3168 .op_rsize_bop
= nfsd4_only_status_rsize
,
3171 .op_func
= nfsd4_clone
,
3172 .op_flags
= OP_MODIFIES_SOMETHING
,
3173 .op_name
= "OP_CLONE",
3174 .op_rsize_bop
= nfsd4_only_status_rsize
,
3177 .op_func
= nfsd4_copy
,
3178 .op_flags
= OP_MODIFIES_SOMETHING
,
3179 .op_name
= "OP_COPY",
3180 .op_rsize_bop
= nfsd4_copy_rsize
,
3183 .op_func
= nfsd4_read
,
3184 .op_release
= nfsd4_read_release
,
3185 .op_name
= "OP_READ_PLUS",
3186 .op_rsize_bop
= nfsd4_read_plus_rsize
,
3187 .op_get_currentstateid
= nfsd4_get_readstateid
,
3190 .op_func
= nfsd4_seek
,
3191 .op_name
= "OP_SEEK",
3192 .op_rsize_bop
= nfsd4_seek_rsize
,
3194 [OP_OFFLOAD_STATUS
] = {
3195 .op_func
= nfsd4_offload_status
,
3196 .op_name
= "OP_OFFLOAD_STATUS",
3197 .op_rsize_bop
= nfsd4_offload_status_rsize
,
3199 [OP_OFFLOAD_CANCEL
] = {
3200 .op_func
= nfsd4_offload_cancel
,
3201 .op_flags
= OP_MODIFIES_SOMETHING
,
3202 .op_name
= "OP_OFFLOAD_CANCEL",
3203 .op_rsize_bop
= nfsd4_only_status_rsize
,
3205 [OP_COPY_NOTIFY
] = {
3206 .op_func
= nfsd4_copy_notify
,
3207 .op_flags
= OP_MODIFIES_SOMETHING
,
3208 .op_name
= "OP_COPY_NOTIFY",
3209 .op_rsize_bop
= nfsd4_copy_notify_rsize
,
3212 .op_func
= nfsd4_getxattr
,
3213 .op_name
= "OP_GETXATTR",
3214 .op_rsize_bop
= nfsd4_getxattr_rsize
,
3217 .op_func
= nfsd4_setxattr
,
3218 .op_flags
= OP_MODIFIES_SOMETHING
| OP_CACHEME
,
3219 .op_name
= "OP_SETXATTR",
3220 .op_rsize_bop
= nfsd4_setxattr_rsize
,
3223 .op_func
= nfsd4_listxattrs
,
3224 .op_name
= "OP_LISTXATTRS",
3225 .op_rsize_bop
= nfsd4_listxattrs_rsize
,
3227 [OP_REMOVEXATTR
] = {
3228 .op_func
= nfsd4_removexattr
,
3229 .op_flags
= OP_MODIFIES_SOMETHING
| OP_CACHEME
,
3230 .op_name
= "OP_REMOVEXATTR",
3231 .op_rsize_bop
= nfsd4_removexattr_rsize
,
3236 * nfsd4_spo_must_allow - Determine if the compound op contains an
3237 * operation that is allowed to be sent with machine credentials
3239 * @rqstp: a pointer to the struct svc_rqst
3241 * Checks to see if the compound contains a spo_must_allow op
3242 * and confirms that it was sent with the proper machine creds.
3245 bool nfsd4_spo_must_allow(struct svc_rqst
*rqstp
)
3247 struct nfsd4_compoundres
*resp
= rqstp
->rq_resp
;
3248 struct nfsd4_compoundargs
*argp
= rqstp
->rq_argp
;
3249 struct nfsd4_op
*this = &argp
->ops
[resp
->opcnt
- 1];
3250 struct nfsd4_compound_state
*cstate
= &resp
->cstate
;
3251 struct nfs4_op_map
*allow
= &cstate
->clp
->cl_spo_must_allow
;
3254 if (!cstate
->minorversion
)
3257 if (cstate
->spo_must_allowed
)
3260 opiter
= resp
->opcnt
;
3261 while (opiter
< argp
->opcnt
) {
3262 this = &argp
->ops
[opiter
++];
3263 if (test_bit(this->opnum
, allow
->u
.longs
) &&
3264 cstate
->clp
->cl_mach_cred
&&
3265 nfsd4_mach_creds_match(cstate
->clp
, rqstp
)) {
3266 cstate
->spo_must_allowed
= true;
3270 cstate
->spo_must_allowed
= false;
3274 int nfsd4_max_reply(struct svc_rqst
*rqstp
, struct nfsd4_op
*op
)
3276 if (op
->opnum
== OP_ILLEGAL
|| op
->status
== nfserr_notsupp
)
3277 return op_encode_hdr_size
* sizeof(__be32
);
3279 BUG_ON(OPDESC(op
)->op_rsize_bop
== NULL
);
3280 return OPDESC(op
)->op_rsize_bop(rqstp
, op
);
3283 void warn_on_nonidempotent_op(struct nfsd4_op
*op
)
3285 if (OPDESC(op
)->op_flags
& OP_MODIFIES_SOMETHING
) {
3286 pr_err("unable to encode reply to nonidempotent op %u (%s)\n",
3287 op
->opnum
, nfsd4_op_name(op
->opnum
));
3292 static const char *nfsd4_op_name(unsigned opnum
)
3294 if (opnum
< ARRAY_SIZE(nfsd4_ops
))
3295 return nfsd4_ops
[opnum
].op_name
;
3296 return "unknown_operation";
3299 static const struct svc_procedure nfsd_procedures4
[2] = {
3301 .pc_func
= nfsd4_proc_null
,
3302 .pc_decode
= nfssvc_decode_voidarg
,
3303 .pc_encode
= nfssvc_encode_voidres
,
3304 .pc_argsize
= sizeof(struct nfsd_voidargs
),
3305 .pc_ressize
= sizeof(struct nfsd_voidres
),
3306 .pc_cachetype
= RC_NOCACHE
,
3309 [NFSPROC4_COMPOUND
] = {
3310 .pc_func
= nfsd4_proc_compound
,
3311 .pc_decode
= nfs4svc_decode_compoundargs
,
3312 .pc_encode
= nfs4svc_encode_compoundres
,
3313 .pc_argsize
= sizeof(struct nfsd4_compoundargs
),
3314 .pc_ressize
= sizeof(struct nfsd4_compoundres
),
3315 .pc_release
= nfsd4_release_compoundargs
,
3316 .pc_cachetype
= RC_NOCACHE
,
3317 .pc_xdrressize
= NFSD_BUFSIZE
/4,
3321 static unsigned int nfsd_count3
[ARRAY_SIZE(nfsd_procedures4
)];
3322 const struct svc_version nfsd_version4
= {
3325 .vs_proc
= nfsd_procedures4
,
3326 .vs_count
= nfsd_count3
,
3327 .vs_dispatch
= nfsd_dispatch
,
3328 .vs_xdrsize
= NFS4_SVC_XDRSIZE
,
3329 .vs_rpcb_optnl
= true,
3330 .vs_need_cong_ctrl
= true,