4 * Server-side XDR for NFSv4
6 * Copyright (c) 2002 The Regents of the University of Michigan.
9 * Kendrick Smith <kmsmith@umich.edu>
10 * Andy Adamson <andros@umich.edu>
12 * Redistribution and use in source and binary forms, with or without
13 * modification, are permitted provided that the following conditions
16 * 1. Redistributions of source code must retain the above copyright
17 * notice, this list of conditions and the following disclaimer.
18 * 2. Redistributions in binary form must reproduce the above copyright
19 * notice, this list of conditions and the following disclaimer in the
20 * documentation and/or other materials provided with the distribution.
21 * 3. Neither the name of the University nor the names of its
22 * contributors may be used to endorse or promote products derived
23 * from this software without specific prior written permission.
25 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
26 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
27 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
28 * DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
29 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
30 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
31 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
32 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
33 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
34 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
35 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
37 * TODO: Neil Brown made the following observation: We currently
38 * initially reserve NFSD_BUFSIZE space on the transmit queue and
39 * never release any of that until the request is complete.
40 * It would be good to calculate a new maximum response size while
41 * decoding the COMPOUND, and call svc_reserve with this number
42 * at the end of nfs4svc_decode_compoundargs.
45 #include <linux/param.h>
46 #include <linux/smp.h>
47 #include <linux/smp_lock.h>
49 #include <linux/namei.h>
50 #include <linux/vfs.h>
51 #include <linux/sunrpc/xdr.h>
52 #include <linux/sunrpc/svc.h>
53 #include <linux/sunrpc/clnt.h>
54 #include <linux/nfsd/nfsd.h>
55 #include <linux/nfsd/state.h>
56 #include <linux/nfsd/xdr4.h>
57 #include <linux/nfsd_idmap.h>
58 #include <linux/nfs4.h>
59 #include <linux/nfs4_acl.h>
61 #define NFSDDBG_FACILITY NFSDDBG_XDR
64 check_filename(char *str
, int len
, int err
)
70 if (isdotent(str
, len
))
72 for (i
= 0; i
< len
; i
++)
79 * START OF "GENERIC" DECODE ROUTINES.
80 * These may look a little ugly since they are imported from a "generic"
81 * set of XDR encode/decode routines which are intended to be shared by
82 * all of our NFSv4 implementations (OpenBSD, MacOS X...).
84 * If the pain of reading these is too great, it should be a straightforward
85 * task to translate them into Linux-specific versions which are more
86 * consistent with the style used in NFSv2/v3...
96 printk(KERN_NOTICE "xdr error! (%s:%d)\n", __FILE__, __LINE__); \
97 status = nfserr_bad_xdr; \
100 #define READ32(x) (x) = ntohl(*p++)
101 #define READ64(x) do { \
102 (x) = (u64)ntohl(*p++) << 32; \
103 (x) |= ntohl(*p++); \
105 #define READTIME(x) do { \
110 #define READMEM(x,nbytes) do { \
112 p += XDR_QUADLEN(nbytes); \
114 #define SAVEMEM(x,nbytes) do { \
115 if (!(x = (p==argp->tmp || p == argp->tmpp) ? \
116 savemem(argp, p, nbytes) : \
118 printk(KERN_NOTICE "xdr error! (%s:%d)\n", __FILE__, __LINE__); \
121 p += XDR_QUADLEN(nbytes); \
123 #define COPYMEM(x,nbytes) do { \
124 memcpy((x), p, nbytes); \
125 p += XDR_QUADLEN(nbytes); \
128 /* READ_BUF, read_buf(): nbytes must be <= PAGE_SIZE */
129 #define READ_BUF(nbytes) do { \
130 if (nbytes <= (u32)((char *)argp->end - (char *)argp->p)) { \
132 argp->p += XDR_QUADLEN(nbytes); \
133 } else if (!(p = read_buf(argp, nbytes))) { \
134 printk(KERN_NOTICE "xdr error! (%s:%d)\n", __FILE__, __LINE__); \
139 static u32
*read_buf(struct nfsd4_compoundargs
*argp
, int nbytes
)
141 /* We want more bytes than seem to be available.
142 * Maybe we need a new page, maybe we have just run out
144 int avail
= (char*)argp
->end
- (char*)argp
->p
;
146 if (avail
+ argp
->pagelen
< nbytes
)
148 if (avail
+ PAGE_SIZE
< nbytes
) /* need more than a page !! */
150 /* ok, we can do it with the current plus the next page */
151 if (nbytes
<= sizeof(argp
->tmp
))
155 p
= argp
->tmpp
= kmalloc(nbytes
, GFP_KERNEL
);
160 memcpy(p
, argp
->p
, avail
);
161 /* step to next page */
162 argp
->p
= page_address(argp
->pagelist
[0]);
164 if (argp
->pagelen
< PAGE_SIZE
) {
165 argp
->end
= p
+ (argp
->pagelen
>>2);
168 argp
->end
= p
+ (PAGE_SIZE
>>2);
169 argp
->pagelen
-= PAGE_SIZE
;
171 memcpy(((char*)p
)+avail
, argp
->p
, (nbytes
- avail
));
172 argp
->p
+= XDR_QUADLEN(nbytes
- avail
);
177 defer_free(struct nfsd4_compoundargs
*argp
,
178 void (*release
)(const void *), void *p
)
182 tb
= kmalloc(sizeof(*tb
), GFP_KERNEL
);
186 tb
->release
= release
;
187 tb
->next
= argp
->to_free
;
192 static char *savemem(struct nfsd4_compoundargs
*argp
, u32
*p
, int nbytes
)
195 if (p
== argp
->tmp
) {
196 new = kmalloc(nbytes
, GFP_KERNEL
);
197 if (!new) return NULL
;
199 memcpy(p
, argp
->tmp
, nbytes
);
201 BUG_ON(p
!= argp
->tmpp
);
204 if (defer_free(argp
, kfree
, p
)) {
213 nfsd4_decode_bitmap(struct nfsd4_compoundargs
*argp
, u32
*bmval
)
226 READ_BUF(bmlen
<< 2);
236 nfsd4_decode_fattr(struct nfsd4_compoundargs
*argp
, u32
*bmval
, struct iattr
*iattr
,
237 struct nfs4_acl
**acl
)
239 int expected_len
, len
= 0;
245 if ((status
= nfsd4_decode_bitmap(argp
, bmval
)))
249 * According to spec, unsupported attributes return ERR_NOTSUPP;
250 * read-only attributes return ERR_INVAL.
252 if ((bmval
[0] & ~NFSD_SUPPORTED_ATTRS_WORD0
) || (bmval
[1] & ~NFSD_SUPPORTED_ATTRS_WORD1
))
253 return nfserr_attrnotsupp
;
254 if ((bmval
[0] & ~NFSD_WRITEABLE_ATTRS_WORD0
) || (bmval
[1] & ~NFSD_WRITEABLE_ATTRS_WORD1
))
258 READ32(expected_len
);
260 if (bmval
[0] & FATTR4_WORD0_SIZE
) {
263 READ64(iattr
->ia_size
);
264 iattr
->ia_valid
|= ATTR_SIZE
;
266 if (bmval
[0] & FATTR4_WORD0_ACL
) {
270 READ_BUF(4); len
+= 4;
273 *acl
= nfs4_acl_new();
278 defer_free(argp
, (void (*)(const void *))nfs4_acl_free
, *acl
);
280 for (i
= 0; i
< nace
; i
++) {
281 READ_BUF(16); len
+= 16;
284 READ32(ace
.access_mask
);
287 len
+= XDR_QUADLEN(dummy32
) << 2;
288 READMEM(buf
, dummy32
);
289 ace
.whotype
= nfs4_acl_get_whotype(buf
, dummy32
);
291 if (ace
.whotype
!= NFS4_ACL_WHO_NAMED
)
293 else if (ace
.flag
& NFS4_ACE_IDENTIFIER_GROUP
)
294 status
= nfsd_map_name_to_gid(argp
->rqstp
,
295 buf
, dummy32
, &ace
.who
);
297 status
= nfsd_map_name_to_uid(argp
->rqstp
,
298 buf
, dummy32
, &ace
.who
);
301 status
= nfs4_acl_add_ace(*acl
, ace
.type
, ace
.flag
,
302 ace
.access_mask
, ace
.whotype
, ace
.who
);
308 if (bmval
[1] & FATTR4_WORD1_MODE
) {
311 READ32(iattr
->ia_mode
);
312 iattr
->ia_mode
&= (S_IFMT
| S_IALLUGO
);
313 iattr
->ia_valid
|= ATTR_MODE
;
315 if (bmval
[1] & FATTR4_WORD1_OWNER
) {
320 len
+= (XDR_QUADLEN(dummy32
) << 2);
321 READMEM(buf
, dummy32
);
322 if ((status
= nfsd_map_name_to_uid(argp
->rqstp
, buf
, dummy32
, &iattr
->ia_uid
)))
324 iattr
->ia_valid
|= ATTR_UID
;
326 if (bmval
[1] & FATTR4_WORD1_OWNER_GROUP
) {
331 len
+= (XDR_QUADLEN(dummy32
) << 2);
332 READMEM(buf
, dummy32
);
333 if ((status
= nfsd_map_name_to_gid(argp
->rqstp
, buf
, dummy32
, &iattr
->ia_gid
)))
335 iattr
->ia_valid
|= ATTR_GID
;
337 if (bmval
[1] & FATTR4_WORD1_TIME_ACCESS_SET
) {
342 case NFS4_SET_TO_CLIENT_TIME
:
343 /* We require the high 32 bits of 'seconds' to be 0, and we ignore
344 all 32 bits of 'nseconds'. */
350 READ32(iattr
->ia_atime
.tv_sec
);
351 READ32(iattr
->ia_atime
.tv_nsec
);
352 if (iattr
->ia_atime
.tv_nsec
>= (u32
)1000000000)
354 iattr
->ia_valid
|= (ATTR_ATIME
| ATTR_ATIME_SET
);
356 case NFS4_SET_TO_SERVER_TIME
:
357 iattr
->ia_valid
|= ATTR_ATIME
;
363 if (bmval
[1] & FATTR4_WORD1_TIME_METADATA
) {
364 /* We require the high 32 bits of 'seconds' to be 0, and we ignore
365 all 32 bits of 'nseconds'. */
371 READ32(iattr
->ia_ctime
.tv_sec
);
372 READ32(iattr
->ia_ctime
.tv_nsec
);
373 if (iattr
->ia_ctime
.tv_nsec
>= (u32
)1000000000)
375 iattr
->ia_valid
|= ATTR_CTIME
;
377 if (bmval
[1] & FATTR4_WORD1_TIME_MODIFY_SET
) {
382 case NFS4_SET_TO_CLIENT_TIME
:
383 /* We require the high 32 bits of 'seconds' to be 0, and we ignore
384 all 32 bits of 'nseconds'. */
390 READ32(iattr
->ia_mtime
.tv_sec
);
391 READ32(iattr
->ia_mtime
.tv_nsec
);
392 if (iattr
->ia_mtime
.tv_nsec
>= (u32
)1000000000)
394 iattr
->ia_valid
|= (ATTR_MTIME
| ATTR_MTIME_SET
);
396 case NFS4_SET_TO_SERVER_TIME
:
397 iattr
->ia_valid
|= ATTR_MTIME
;
403 if (len
!= expected_len
)
409 status
= nfserrno(status
);
414 nfsd4_decode_access(struct nfsd4_compoundargs
*argp
, struct nfsd4_access
*access
)
419 READ32(access
->ac_req_access
);
425 nfsd4_decode_close(struct nfsd4_compoundargs
*argp
, struct nfsd4_close
*close
)
429 close
->cl_stateowner
= NULL
;
430 READ_BUF(4 + sizeof(stateid_t
));
431 READ32(close
->cl_seqid
);
432 READ32(close
->cl_stateid
.si_generation
);
433 COPYMEM(&close
->cl_stateid
.si_opaque
, sizeof(stateid_opaque_t
));
440 nfsd4_decode_commit(struct nfsd4_compoundargs
*argp
, struct nfsd4_commit
*commit
)
445 READ64(commit
->co_offset
);
446 READ32(commit
->co_count
);
452 nfsd4_decode_create(struct nfsd4_compoundargs
*argp
, struct nfsd4_create
*create
)
457 READ32(create
->cr_type
);
458 switch (create
->cr_type
) {
461 READ32(create
->cr_linklen
);
462 READ_BUF(create
->cr_linklen
);
463 SAVEMEM(create
->cr_linkname
, create
->cr_linklen
);
468 READ32(create
->cr_specdata1
);
469 READ32(create
->cr_specdata2
);
479 READ32(create
->cr_namelen
);
480 READ_BUF(create
->cr_namelen
);
481 SAVEMEM(create
->cr_name
, create
->cr_namelen
);
482 if ((status
= check_filename(create
->cr_name
, create
->cr_namelen
, nfserr_inval
)))
485 if ((status
= nfsd4_decode_fattr(argp
, create
->cr_bmval
, &create
->cr_iattr
, &create
->cr_acl
)))
492 nfsd4_decode_delegreturn(struct nfsd4_compoundargs
*argp
, struct nfsd4_delegreturn
*dr
)
496 READ_BUF(sizeof(stateid_t
));
497 READ32(dr
->dr_stateid
.si_generation
);
498 COPYMEM(&dr
->dr_stateid
.si_opaque
, sizeof(stateid_opaque_t
));
504 nfsd4_decode_getattr(struct nfsd4_compoundargs
*argp
, struct nfsd4_getattr
*getattr
)
506 return nfsd4_decode_bitmap(argp
, getattr
->ga_bmval
);
510 nfsd4_decode_link(struct nfsd4_compoundargs
*argp
, struct nfsd4_link
*link
)
515 READ32(link
->li_namelen
);
516 READ_BUF(link
->li_namelen
);
517 SAVEMEM(link
->li_name
, link
->li_namelen
);
518 if ((status
= check_filename(link
->li_name
, link
->li_namelen
, nfserr_inval
)))
525 nfsd4_decode_lock(struct nfsd4_compoundargs
*argp
, struct nfsd4_lock
*lock
)
529 lock
->lk_replay_owner
= NULL
;
531 * type, reclaim(boolean), offset, length, new_lock_owner(boolean)
534 READ32(lock
->lk_type
);
535 if ((lock
->lk_type
< NFS4_READ_LT
) || (lock
->lk_type
> NFS4_WRITEW_LT
))
537 READ32(lock
->lk_reclaim
);
538 READ64(lock
->lk_offset
);
539 READ64(lock
->lk_length
);
540 READ32(lock
->lk_is_new
);
542 if (lock
->lk_is_new
) {
544 READ32(lock
->lk_new_open_seqid
);
545 READ32(lock
->lk_new_open_stateid
.si_generation
);
547 COPYMEM(&lock
->lk_new_open_stateid
.si_opaque
, sizeof(stateid_opaque_t
));
548 READ32(lock
->lk_new_lock_seqid
);
549 COPYMEM(&lock
->lk_new_clientid
, sizeof(clientid_t
));
550 READ32(lock
->lk_new_owner
.len
);
551 READ_BUF(lock
->lk_new_owner
.len
);
552 READMEM(lock
->lk_new_owner
.data
, lock
->lk_new_owner
.len
);
555 READ32(lock
->lk_old_lock_stateid
.si_generation
);
556 COPYMEM(&lock
->lk_old_lock_stateid
.si_opaque
, sizeof(stateid_opaque_t
));
557 READ32(lock
->lk_old_lock_seqid
);
564 nfsd4_decode_lockt(struct nfsd4_compoundargs
*argp
, struct nfsd4_lockt
*lockt
)
569 READ32(lockt
->lt_type
);
570 if((lockt
->lt_type
< NFS4_READ_LT
) || (lockt
->lt_type
> NFS4_WRITEW_LT
))
572 READ64(lockt
->lt_offset
);
573 READ64(lockt
->lt_length
);
574 COPYMEM(&lockt
->lt_clientid
, 8);
575 READ32(lockt
->lt_owner
.len
);
576 READ_BUF(lockt
->lt_owner
.len
);
577 READMEM(lockt
->lt_owner
.data
, lockt
->lt_owner
.len
);
583 nfsd4_decode_locku(struct nfsd4_compoundargs
*argp
, struct nfsd4_locku
*locku
)
587 locku
->lu_stateowner
= NULL
;
588 READ_BUF(24 + sizeof(stateid_t
));
589 READ32(locku
->lu_type
);
590 if ((locku
->lu_type
< NFS4_READ_LT
) || (locku
->lu_type
> NFS4_WRITEW_LT
))
592 READ32(locku
->lu_seqid
);
593 READ32(locku
->lu_stateid
.si_generation
);
594 COPYMEM(&locku
->lu_stateid
.si_opaque
, sizeof(stateid_opaque_t
));
595 READ64(locku
->lu_offset
);
596 READ64(locku
->lu_length
);
602 nfsd4_decode_lookup(struct nfsd4_compoundargs
*argp
, struct nfsd4_lookup
*lookup
)
607 READ32(lookup
->lo_len
);
608 READ_BUF(lookup
->lo_len
);
609 SAVEMEM(lookup
->lo_name
, lookup
->lo_len
);
610 if ((status
= check_filename(lookup
->lo_name
, lookup
->lo_len
, nfserr_noent
)))
617 nfsd4_decode_open(struct nfsd4_compoundargs
*argp
, struct nfsd4_open
*open
)
621 memset(open
->op_bmval
, 0, sizeof(open
->op_bmval
));
622 open
->op_iattr
.ia_valid
= 0;
623 open
->op_stateowner
= NULL
;
625 /* seqid, share_access, share_deny, clientid, ownerlen */
626 READ_BUF(16 + sizeof(clientid_t
));
627 READ32(open
->op_seqid
);
628 READ32(open
->op_share_access
);
629 READ32(open
->op_share_deny
);
630 COPYMEM(&open
->op_clientid
, sizeof(clientid_t
));
631 READ32(open
->op_owner
.len
);
633 /* owner, open_flag */
634 READ_BUF(open
->op_owner
.len
+ 4);
635 SAVEMEM(open
->op_owner
.data
, open
->op_owner
.len
);
636 READ32(open
->op_create
);
637 switch (open
->op_create
) {
638 case NFS4_OPEN_NOCREATE
:
640 case NFS4_OPEN_CREATE
:
642 READ32(open
->op_createmode
);
643 switch (open
->op_createmode
) {
644 case NFS4_CREATE_UNCHECKED
:
645 case NFS4_CREATE_GUARDED
:
646 if ((status
= nfsd4_decode_fattr(argp
, open
->op_bmval
, &open
->op_iattr
, &open
->op_acl
)))
649 case NFS4_CREATE_EXCLUSIVE
:
651 COPYMEM(open
->op_verf
.data
, 8);
663 READ32(open
->op_claim_type
);
664 switch (open
->op_claim_type
) {
665 case NFS4_OPEN_CLAIM_NULL
:
666 case NFS4_OPEN_CLAIM_DELEGATE_PREV
:
668 READ32(open
->op_fname
.len
);
669 READ_BUF(open
->op_fname
.len
);
670 SAVEMEM(open
->op_fname
.data
, open
->op_fname
.len
);
671 if ((status
= check_filename(open
->op_fname
.data
, open
->op_fname
.len
, nfserr_inval
)))
674 case NFS4_OPEN_CLAIM_PREVIOUS
:
676 READ32(open
->op_delegate_type
);
678 case NFS4_OPEN_CLAIM_DELEGATE_CUR
:
679 READ_BUF(sizeof(stateid_t
) + 4);
680 COPYMEM(&open
->op_delegate_stateid
, sizeof(stateid_t
));
681 READ32(open
->op_fname
.len
);
682 READ_BUF(open
->op_fname
.len
);
683 SAVEMEM(open
->op_fname
.data
, open
->op_fname
.len
);
684 if ((status
= check_filename(open
->op_fname
.data
, open
->op_fname
.len
, nfserr_inval
)))
695 nfsd4_decode_open_confirm(struct nfsd4_compoundargs
*argp
, struct nfsd4_open_confirm
*open_conf
)
699 open_conf
->oc_stateowner
= NULL
;
700 READ_BUF(4 + sizeof(stateid_t
));
701 READ32(open_conf
->oc_req_stateid
.si_generation
);
702 COPYMEM(&open_conf
->oc_req_stateid
.si_opaque
, sizeof(stateid_opaque_t
));
703 READ32(open_conf
->oc_seqid
);
709 nfsd4_decode_open_downgrade(struct nfsd4_compoundargs
*argp
, struct nfsd4_open_downgrade
*open_down
)
713 open_down
->od_stateowner
= NULL
;
714 READ_BUF(12 + sizeof(stateid_t
));
715 READ32(open_down
->od_stateid
.si_generation
);
716 COPYMEM(&open_down
->od_stateid
.si_opaque
, sizeof(stateid_opaque_t
));
717 READ32(open_down
->od_seqid
);
718 READ32(open_down
->od_share_access
);
719 READ32(open_down
->od_share_deny
);
725 nfsd4_decode_putfh(struct nfsd4_compoundargs
*argp
, struct nfsd4_putfh
*putfh
)
730 READ32(putfh
->pf_fhlen
);
731 if (putfh
->pf_fhlen
> NFS4_FHSIZE
)
733 READ_BUF(putfh
->pf_fhlen
);
734 SAVEMEM(putfh
->pf_fhval
, putfh
->pf_fhlen
);
740 nfsd4_decode_read(struct nfsd4_compoundargs
*argp
, struct nfsd4_read
*read
)
744 READ_BUF(sizeof(stateid_t
) + 12);
745 READ32(read
->rd_stateid
.si_generation
);
746 COPYMEM(&read
->rd_stateid
.si_opaque
, sizeof(stateid_opaque_t
));
747 READ64(read
->rd_offset
);
748 READ32(read
->rd_length
);
754 nfsd4_decode_readdir(struct nfsd4_compoundargs
*argp
, struct nfsd4_readdir
*readdir
)
759 READ64(readdir
->rd_cookie
);
760 COPYMEM(readdir
->rd_verf
.data
, sizeof(readdir
->rd_verf
.data
));
761 READ32(readdir
->rd_dircount
); /* just in case you needed a useless field... */
762 READ32(readdir
->rd_maxcount
);
763 if ((status
= nfsd4_decode_bitmap(argp
, readdir
->rd_bmval
)))
770 nfsd4_decode_remove(struct nfsd4_compoundargs
*argp
, struct nfsd4_remove
*remove
)
775 READ32(remove
->rm_namelen
);
776 READ_BUF(remove
->rm_namelen
);
777 SAVEMEM(remove
->rm_name
, remove
->rm_namelen
);
778 if ((status
= check_filename(remove
->rm_name
, remove
->rm_namelen
, nfserr_noent
)))
785 nfsd4_decode_rename(struct nfsd4_compoundargs
*argp
, struct nfsd4_rename
*rename
)
790 READ32(rename
->rn_snamelen
);
791 READ_BUF(rename
->rn_snamelen
+ 4);
792 SAVEMEM(rename
->rn_sname
, rename
->rn_snamelen
);
793 READ32(rename
->rn_tnamelen
);
794 READ_BUF(rename
->rn_tnamelen
);
795 SAVEMEM(rename
->rn_tname
, rename
->rn_tnamelen
);
796 if ((status
= check_filename(rename
->rn_sname
, rename
->rn_snamelen
, nfserr_noent
)))
798 if ((status
= check_filename(rename
->rn_tname
, rename
->rn_tnamelen
, nfserr_inval
)))
805 nfsd4_decode_renew(struct nfsd4_compoundargs
*argp
, clientid_t
*clientid
)
809 READ_BUF(sizeof(clientid_t
));
810 COPYMEM(clientid
, sizeof(clientid_t
));
816 nfsd4_decode_setattr(struct nfsd4_compoundargs
*argp
, struct nfsd4_setattr
*setattr
)
820 READ_BUF(sizeof(stateid_t
));
821 READ32(setattr
->sa_stateid
.si_generation
);
822 COPYMEM(&setattr
->sa_stateid
.si_opaque
, sizeof(stateid_opaque_t
));
823 if ((status
= nfsd4_decode_fattr(argp
, setattr
->sa_bmval
, &setattr
->sa_iattr
, &setattr
->sa_acl
)))
830 nfsd4_decode_setclientid(struct nfsd4_compoundargs
*argp
, struct nfsd4_setclientid
*setclientid
)
835 COPYMEM(setclientid
->se_verf
.data
, 8);
836 READ32(setclientid
->se_namelen
);
838 READ_BUF(setclientid
->se_namelen
+ 8);
839 SAVEMEM(setclientid
->se_name
, setclientid
->se_namelen
);
840 READ32(setclientid
->se_callback_prog
);
841 READ32(setclientid
->se_callback_netid_len
);
843 READ_BUF(setclientid
->se_callback_netid_len
+ 4);
844 SAVEMEM(setclientid
->se_callback_netid_val
, setclientid
->se_callback_netid_len
);
845 READ32(setclientid
->se_callback_addr_len
);
847 READ_BUF(setclientid
->se_callback_addr_len
+ 4);
848 SAVEMEM(setclientid
->se_callback_addr_val
, setclientid
->se_callback_addr_len
);
849 READ32(setclientid
->se_callback_ident
);
855 nfsd4_decode_setclientid_confirm(struct nfsd4_compoundargs
*argp
, struct nfsd4_setclientid_confirm
*scd_c
)
859 READ_BUF(8 + sizeof(nfs4_verifier
));
860 COPYMEM(&scd_c
->sc_clientid
, 8);
861 COPYMEM(&scd_c
->sc_confirm
, sizeof(nfs4_verifier
));
866 /* Also used for NVERIFY */
868 nfsd4_decode_verify(struct nfsd4_compoundargs
*argp
, struct nfsd4_verify
*verify
)
871 struct nfsd4_compoundargs save
= {
874 .rqstp
= argp
->rqstp
,
877 struct iattr ve_iattr
; /* request */
878 struct nfs4_acl
*ve_acl
; /* request */
882 if ((status
= nfsd4_decode_bitmap(argp
, verify
->ve_bmval
)))
885 /* For convenience's sake, we compare raw xdr'd attributes in
886 * nfsd4_proc_verify; however we still decode here just to return
887 * correct error in case of bad xdr. */
889 status
= nfsd4_decode_fattr(ve_bmval
, &ve_iattr
, &ve_acl
);
890 if (status
== nfserr_inval
) {
891 status
= nfserrno(status
);
896 READ32(verify
->ve_attrlen
);
897 READ_BUF(verify
->ve_attrlen
);
898 SAVEMEM(verify
->ve_attrval
, verify
->ve_attrlen
);
904 nfsd4_decode_write(struct nfsd4_compoundargs
*argp
, struct nfsd4_write
*write
)
911 READ_BUF(sizeof(stateid_opaque_t
) + 20);
912 READ32(write
->wr_stateid
.si_generation
);
913 COPYMEM(&write
->wr_stateid
.si_opaque
, sizeof(stateid_opaque_t
));
914 READ64(write
->wr_offset
);
915 READ32(write
->wr_stable_how
);
916 if (write
->wr_stable_how
> 2)
918 READ32(write
->wr_buflen
);
920 /* Sorry .. no magic macros for this.. *
921 * READ_BUF(write->wr_buflen);
922 * SAVEMEM(write->wr_buf, write->wr_buflen);
924 avail
= (char*)argp
->end
- (char*)argp
->p
;
925 if (avail
+ argp
->pagelen
< write
->wr_buflen
) {
926 printk(KERN_NOTICE
"xdr error! (%s:%d)\n", __FILE__
, __LINE__
);
929 argp
->rqstp
->rq_vec
[0].iov_base
= p
;
930 argp
->rqstp
->rq_vec
[0].iov_len
= avail
;
932 len
= write
->wr_buflen
;
933 while (len
> argp
->rqstp
->rq_vec
[v
].iov_len
) {
934 len
-= argp
->rqstp
->rq_vec
[v
].iov_len
;
936 argp
->rqstp
->rq_vec
[v
].iov_base
= page_address(argp
->pagelist
[0]);
938 if (argp
->pagelen
>= PAGE_SIZE
) {
939 argp
->rqstp
->rq_vec
[v
].iov_len
= PAGE_SIZE
;
940 argp
->pagelen
-= PAGE_SIZE
;
942 argp
->rqstp
->rq_vec
[v
].iov_len
= argp
->pagelen
;
943 argp
->pagelen
-= len
;
946 argp
->end
= (u32
*) (argp
->rqstp
->rq_vec
[v
].iov_base
+ argp
->rqstp
->rq_vec
[v
].iov_len
);
947 argp
->p
= (u32
*) (argp
->rqstp
->rq_vec
[v
].iov_base
+ (XDR_QUADLEN(len
) << 2));
948 argp
->rqstp
->rq_vec
[v
].iov_len
= len
;
949 write
->wr_vlen
= v
+1;
955 nfsd4_decode_release_lockowner(struct nfsd4_compoundargs
*argp
, struct nfsd4_release_lockowner
*rlockowner
)
960 COPYMEM(&rlockowner
->rl_clientid
, sizeof(clientid_t
));
961 READ32(rlockowner
->rl_owner
.len
);
962 READ_BUF(rlockowner
->rl_owner
.len
);
963 READMEM(rlockowner
->rl_owner
.data
, rlockowner
->rl_owner
.len
);
969 nfsd4_decode_compound(struct nfsd4_compoundargs
*argp
)
976 * XXX: According to spec, we should check the tag
977 * for UTF-8 compliance. I'm postponing this for
978 * now because it seems that some clients do use
982 READ32(argp
->taglen
);
983 READ_BUF(argp
->taglen
+ 8);
984 SAVEMEM(argp
->tag
, argp
->taglen
);
985 READ32(argp
->minorversion
);
988 if (argp
->taglen
> NFSD4_MAX_TAGLEN
)
990 if (argp
->opcnt
> 100)
993 if (argp
->opcnt
> ARRAY_SIZE(argp
->iops
)) {
994 argp
->ops
= kmalloc(argp
->opcnt
* sizeof(*argp
->ops
), GFP_KERNEL
);
996 argp
->ops
= argp
->iops
;
997 printk(KERN_INFO
"nfsd: couldn't allocate room for COMPOUND\n");
1002 for (i
= 0; i
< argp
->opcnt
; i
++) {
1007 * We can't use READ_BUF() here because we need to handle
1008 * a missing opcode as an OP_WRITE + 1. So we need to check
1009 * to see if we're truly at the end of our buffer or if there
1010 * is another page we need to flip to.
1013 if (argp
->p
== argp
->end
) {
1014 if (argp
->pagelen
< 4) {
1015 /* There isn't an opcode still on the wire */
1016 op
->opnum
= OP_WRITE
+ 1;
1017 op
->status
= nfserr_bad_xdr
;
1023 * False alarm. We just hit a page boundary, but there
1024 * is still data available. Move pointer across page
1025 * boundary. *snip from READ_BUF*
1027 argp
->p
= page_address(argp
->pagelist
[0]);
1029 if (argp
->pagelen
< PAGE_SIZE
) {
1030 argp
->end
= p
+ (argp
->pagelen
>>2);
1033 argp
->end
= p
+ (PAGE_SIZE
>>2);
1034 argp
->pagelen
-= PAGE_SIZE
;
1037 op
->opnum
= ntohl(*argp
->p
++);
1039 switch (op
->opnum
) {
1040 case 2: /* Reserved operation */
1041 op
->opnum
= OP_ILLEGAL
;
1042 if (argp
->minorversion
== 0)
1043 op
->status
= nfserr_op_illegal
;
1045 op
->status
= nfserr_minor_vers_mismatch
;
1048 op
->status
= nfsd4_decode_access(argp
, &op
->u
.access
);
1051 op
->status
= nfsd4_decode_close(argp
, &op
->u
.close
);
1054 op
->status
= nfsd4_decode_commit(argp
, &op
->u
.commit
);
1057 op
->status
= nfsd4_decode_create(argp
, &op
->u
.create
);
1059 case OP_DELEGRETURN
:
1060 op
->status
= nfsd4_decode_delegreturn(argp
, &op
->u
.delegreturn
);
1063 op
->status
= nfsd4_decode_getattr(argp
, &op
->u
.getattr
);
1066 op
->status
= nfs_ok
;
1069 op
->status
= nfsd4_decode_link(argp
, &op
->u
.link
);
1072 op
->status
= nfsd4_decode_lock(argp
, &op
->u
.lock
);
1075 op
->status
= nfsd4_decode_lockt(argp
, &op
->u
.lockt
);
1078 op
->status
= nfsd4_decode_locku(argp
, &op
->u
.locku
);
1081 op
->status
= nfsd4_decode_lookup(argp
, &op
->u
.lookup
);
1084 op
->status
= nfs_ok
;
1087 op
->status
= nfsd4_decode_verify(argp
, &op
->u
.nverify
);
1090 op
->status
= nfsd4_decode_open(argp
, &op
->u
.open
);
1092 case OP_OPEN_CONFIRM
:
1093 op
->status
= nfsd4_decode_open_confirm(argp
, &op
->u
.open_confirm
);
1095 case OP_OPEN_DOWNGRADE
:
1096 op
->status
= nfsd4_decode_open_downgrade(argp
, &op
->u
.open_downgrade
);
1099 op
->status
= nfsd4_decode_putfh(argp
, &op
->u
.putfh
);
1102 op
->status
= nfs_ok
;
1105 op
->status
= nfsd4_decode_read(argp
, &op
->u
.read
);
1108 op
->status
= nfsd4_decode_readdir(argp
, &op
->u
.readdir
);
1111 op
->status
= nfs_ok
;
1114 op
->status
= nfsd4_decode_remove(argp
, &op
->u
.remove
);
1117 op
->status
= nfsd4_decode_rename(argp
, &op
->u
.rename
);
1120 op
->status
= nfs_ok
;
1123 op
->status
= nfsd4_decode_renew(argp
, &op
->u
.renew
);
1126 op
->status
= nfs_ok
;
1129 op
->status
= nfsd4_decode_setattr(argp
, &op
->u
.setattr
);
1131 case OP_SETCLIENTID
:
1132 op
->status
= nfsd4_decode_setclientid(argp
, &op
->u
.setclientid
);
1134 case OP_SETCLIENTID_CONFIRM
:
1135 op
->status
= nfsd4_decode_setclientid_confirm(argp
, &op
->u
.setclientid_confirm
);
1138 op
->status
= nfsd4_decode_verify(argp
, &op
->u
.verify
);
1141 op
->status
= nfsd4_decode_write(argp
, &op
->u
.write
);
1143 case OP_RELEASE_LOCKOWNER
:
1144 op
->status
= nfsd4_decode_release_lockowner(argp
, &op
->u
.release_lockowner
);
1147 op
->opnum
= OP_ILLEGAL
;
1148 op
->status
= nfserr_op_illegal
;
1161 * END OF "GENERIC" DECODE ROUTINES.
1165 * START OF "GENERIC" ENCODE ROUTINES.
1166 * These may look a little ugly since they are imported from a "generic"
1167 * set of XDR encode/decode routines which are intended to be shared by
1168 * all of our NFSv4 implementations (OpenBSD, MacOS X...).
1170 * If the pain of reading these is too great, it should be a straightforward
1171 * task to translate them into Linux-specific versions which are more
1172 * consistent with the style used in NFSv2/v3...
1174 #define ENCODE_HEAD u32 *p
1176 #define WRITE32(n) *p++ = htonl(n)
1177 #define WRITE64(n) do { \
1178 *p++ = htonl((u32)((n) >> 32)); \
1179 *p++ = htonl((u32)(n)); \
1181 #define WRITEMEM(ptr,nbytes) do { \
1182 *(p + XDR_QUADLEN(nbytes) -1) = 0; \
1183 memcpy(p, ptr, nbytes); \
1184 p += XDR_QUADLEN(nbytes); \
1186 #define WRITECINFO(c) do { \
1187 *p++ = htonl(c.atomic); \
1188 *p++ = htonl(c.before_ctime_sec); \
1189 *p++ = htonl(c.before_ctime_nsec); \
1190 *p++ = htonl(c.after_ctime_sec); \
1191 *p++ = htonl(c.after_ctime_nsec); \
1194 #define RESERVE_SPACE(nbytes) do { \
1196 BUG_ON(p + XDR_QUADLEN(nbytes) > resp->end); \
1198 #define ADJUST_ARGS() resp->p = p
1201 * Header routine to setup seqid operation replay cache
1203 #define ENCODE_SEQID_OP_HEAD \
1210 * Routine for encoding the result of a "seqid-mutating" NFSv4 operation. This
1211 * is where sequence id's are incremented, and the replay cache is filled.
1212 * Note that we increment sequence id's here, at the last moment, so we're sure
1213 * we know whether the error to be returned is a sequence id mutating error.
1216 #define ENCODE_SEQID_OP_TAIL(stateowner) do { \
1217 if (seqid_mutating_err(nfserr) && stateowner) { \
1218 stateowner->so_seqid++; \
1219 stateowner->so_replay.rp_status = nfserr; \
1220 stateowner->so_replay.rp_buflen = \
1221 (((char *)(resp)->p - (char *)save)); \
1222 memcpy(stateowner->so_replay.rp_buf, save, \
1223 stateowner->so_replay.rp_buflen); \
1226 /* Encode as an array of strings the string given with components
1229 static int nfsd4_encode_components(char sep
, char *components
,
1230 u32
**pp
, int *buflen
)
1234 int strlen
, count
=0;
1237 dprintk("nfsd4_encode_components(%s)\n", components
);
1238 if ((*buflen
-= 4) < 0)
1239 return nfserr_resource
;
1240 WRITE32(0); /* We will fill this in with @count later */
1241 end
= str
= components
;
1243 for (; *end
&& (*end
!= sep
); end
++)
1244 ; /* Point to end of component */
1247 if ((*buflen
-= ((XDR_QUADLEN(strlen
) << 2) + 4)) < 0)
1248 return nfserr_resource
;
1250 WRITEMEM(str
, strlen
);
1264 * encode a location element of a fs_locations structure
1266 static int nfsd4_encode_fs_location4(struct nfsd4_fs_location
*location
,
1267 u32
**pp
, int *buflen
)
1272 status
= nfsd4_encode_components(':', location
->hosts
, &p
, buflen
);
1275 status
= nfsd4_encode_components('/', location
->path
, &p
, buflen
);
1283 * Return the path to an export point in the pseudo filesystem namespace
1284 * Returned string is safe to use as long as the caller holds a reference
1287 static char *nfsd4_path(struct svc_rqst
*rqstp
, struct svc_export
*exp
)
1289 struct svc_fh tmp_fh
;
1290 char *path
, *rootpath
;
1293 fh_init(&tmp_fh
, NFS4_FHSIZE
);
1294 stat
= exp_pseudoroot(rqstp
->rq_client
, &tmp_fh
, &rqstp
->rq_chandle
);
1296 return ERR_PTR(stat
);
1297 rootpath
= tmp_fh
.fh_export
->ex_path
;
1299 path
= exp
->ex_path
;
1301 if (strncmp(path
, rootpath
, strlen(rootpath
))) {
1302 printk("nfsd: fs_locations failed;"
1303 "%s is not contained in %s\n", path
, rootpath
);
1304 return ERR_PTR(-EOPNOTSUPP
);
1307 return path
+ strlen(rootpath
);
1311 * encode a fs_locations structure
1313 static int nfsd4_encode_fs_locations(struct svc_rqst
*rqstp
,
1314 struct svc_export
*exp
,
1315 u32
**pp
, int *buflen
)
1319 struct nfsd4_fs_locations
*fslocs
= &exp
->ex_fslocs
;
1320 char *root
= nfsd4_path(rqstp
, exp
);
1323 return PTR_ERR(root
);
1324 status
= nfsd4_encode_components('/', root
, &p
, buflen
);
1327 if ((*buflen
-= 4) < 0)
1328 return nfserr_resource
;
1329 WRITE32(fslocs
->locations_count
);
1330 for (i
=0; i
<fslocs
->locations_count
; i
++) {
1331 status
= nfsd4_encode_fs_location4(&fslocs
->locations
[i
],
1340 static u32 nfs4_ftypes
[16] = {
1341 NF4BAD
, NF4FIFO
, NF4CHR
, NF4BAD
,
1342 NF4DIR
, NF4BAD
, NF4BLK
, NF4BAD
,
1343 NF4REG
, NF4BAD
, NF4LNK
, NF4BAD
,
1344 NF4SOCK
, NF4BAD
, NF4LNK
, NF4BAD
,
1348 nfsd4_encode_name(struct svc_rqst
*rqstp
, int whotype
, uid_t id
, int group
,
1349 u32
**p
, int *buflen
)
1353 if (*buflen
< (XDR_QUADLEN(IDMAP_NAMESZ
) << 2) + 4)
1354 return nfserr_resource
;
1355 if (whotype
!= NFS4_ACL_WHO_NAMED
)
1356 status
= nfs4_acl_write_who(whotype
, (u8
*)(*p
+ 1));
1358 status
= nfsd_map_gid_to_name(rqstp
, id
, (u8
*)(*p
+ 1));
1360 status
= nfsd_map_uid_to_name(rqstp
, id
, (u8
*)(*p
+ 1));
1362 return nfserrno(status
);
1363 *p
= xdr_encode_opaque(*p
, NULL
, status
);
1364 *buflen
-= (XDR_QUADLEN(status
) << 2) + 4;
1365 BUG_ON(*buflen
< 0);
1370 nfsd4_encode_user(struct svc_rqst
*rqstp
, uid_t uid
, u32
**p
, int *buflen
)
1372 return nfsd4_encode_name(rqstp
, NFS4_ACL_WHO_NAMED
, uid
, 0, p
, buflen
);
1376 nfsd4_encode_group(struct svc_rqst
*rqstp
, uid_t gid
, u32
**p
, int *buflen
)
1378 return nfsd4_encode_name(rqstp
, NFS4_ACL_WHO_NAMED
, gid
, 1, p
, buflen
);
1382 nfsd4_encode_aclname(struct svc_rqst
*rqstp
, int whotype
, uid_t id
, int group
,
1383 u32
**p
, int *buflen
)
1385 return nfsd4_encode_name(rqstp
, whotype
, id
, group
, p
, buflen
);
1390 * Note: @fhp can be NULL; in this case, we might have to compose the filehandle
1393 * @countp is the buffer size in _words_; upon successful return this becomes
1394 * replaced with the number of words written.
1397 nfsd4_encode_fattr(struct svc_fh
*fhp
, struct svc_export
*exp
,
1398 struct dentry
*dentry
, u32
*buffer
, int *countp
, u32
*bmval
,
1399 struct svc_rqst
*rqstp
)
1401 u32 bmval0
= bmval
[0];
1402 u32 bmval1
= bmval
[1];
1404 struct svc_fh tempfh
;
1405 struct kstatfs statfs
;
1406 int buflen
= *countp
<< 2;
1413 struct nfs4_acl
*acl
= NULL
;
1415 BUG_ON(bmval1
& NFSD_WRITEONLY_ATTRS_WORD1
);
1416 BUG_ON(bmval0
& ~NFSD_SUPPORTED_ATTRS_WORD0
);
1417 BUG_ON(bmval1
& ~NFSD_SUPPORTED_ATTRS_WORD1
);
1419 status
= vfs_getattr(exp
->ex_mnt
, dentry
, &stat
);
1422 if ((bmval0
& (FATTR4_WORD0_FILES_FREE
| FATTR4_WORD0_FILES_TOTAL
)) ||
1423 (bmval1
& (FATTR4_WORD1_SPACE_AVAIL
| FATTR4_WORD1_SPACE_FREE
|
1424 FATTR4_WORD1_SPACE_TOTAL
))) {
1425 status
= vfs_statfs(dentry
, &statfs
);
1429 if ((bmval0
& (FATTR4_WORD0_FILEHANDLE
| FATTR4_WORD0_FSID
)) && !fhp
) {
1430 fh_init(&tempfh
, NFS4_FHSIZE
);
1431 status
= fh_compose(&tempfh
, exp
, dentry
, NULL
);
1436 if (bmval0
& (FATTR4_WORD0_ACL
| FATTR4_WORD0_ACLSUPPORT
1437 | FATTR4_WORD0_SUPPORTED_ATTRS
)) {
1438 status
= nfsd4_get_nfs4_acl(rqstp
, dentry
, &acl
);
1439 aclsupport
= (status
== 0);
1440 if (bmval0
& FATTR4_WORD0_ACL
) {
1441 if (status
== -EOPNOTSUPP
)
1442 bmval0
&= ~FATTR4_WORD0_ACL
;
1443 else if (status
== -EINVAL
) {
1444 status
= nfserr_attrnotsupp
;
1446 } else if (status
!= 0)
1450 if (bmval0
& FATTR4_WORD0_FS_LOCATIONS
) {
1451 if (exp
->ex_fslocs
.locations
== NULL
) {
1452 bmval0
&= ~FATTR4_WORD0_FS_LOCATIONS
;
1455 if ((buflen
-= 16) < 0)
1461 attrlenp
= p
++; /* to be backfilled later */
1463 if (bmval0
& FATTR4_WORD0_SUPPORTED_ATTRS
) {
1464 if ((buflen
-= 12) < 0)
1467 WRITE32(aclsupport
?
1468 NFSD_SUPPORTED_ATTRS_WORD0
:
1469 NFSD_SUPPORTED_ATTRS_WORD0
& ~FATTR4_WORD0_ACL
);
1470 WRITE32(NFSD_SUPPORTED_ATTRS_WORD1
);
1472 if (bmval0
& FATTR4_WORD0_TYPE
) {
1473 if ((buflen
-= 4) < 0)
1475 dummy
= nfs4_ftypes
[(stat
.mode
& S_IFMT
) >> 12];
1476 if (dummy
== NF4BAD
)
1477 goto out_serverfault
;
1480 if (bmval0
& FATTR4_WORD0_FH_EXPIRE_TYPE
) {
1481 if ((buflen
-= 4) < 0)
1483 if (exp
->ex_flags
& NFSEXP_NOSUBTREECHECK
)
1484 WRITE32(NFS4_FH_PERSISTENT
);
1486 WRITE32(NFS4_FH_PERSISTENT
|NFS4_FH_VOL_RENAME
);
1488 if (bmval0
& FATTR4_WORD0_CHANGE
) {
1490 * Note: This _must_ be consistent with the scheme for writing
1491 * change_info, so any changes made here must be reflected there
1492 * as well. (See xdr4.h:set_change_info() and the WRITECINFO()
1495 if ((buflen
-= 8) < 0)
1497 WRITE32(stat
.ctime
.tv_sec
);
1498 WRITE32(stat
.ctime
.tv_nsec
);
1500 if (bmval0
& FATTR4_WORD0_SIZE
) {
1501 if ((buflen
-= 8) < 0)
1505 if (bmval0
& FATTR4_WORD0_LINK_SUPPORT
) {
1506 if ((buflen
-= 4) < 0)
1510 if (bmval0
& FATTR4_WORD0_SYMLINK_SUPPORT
) {
1511 if ((buflen
-= 4) < 0)
1515 if (bmval0
& FATTR4_WORD0_NAMED_ATTR
) {
1516 if ((buflen
-= 4) < 0)
1520 if (bmval0
& FATTR4_WORD0_FSID
) {
1521 if ((buflen
-= 16) < 0)
1523 if (is_fsid(fhp
, rqstp
->rq_reffh
)) {
1524 WRITE64((u64
)exp
->ex_fsid
);
1528 WRITE32(MAJOR(stat
.dev
));
1530 WRITE32(MINOR(stat
.dev
));
1533 if (bmval0
& FATTR4_WORD0_UNIQUE_HANDLES
) {
1534 if ((buflen
-= 4) < 0)
1538 if (bmval0
& FATTR4_WORD0_LEASE_TIME
) {
1539 if ((buflen
-= 4) < 0)
1541 WRITE32(NFSD_LEASE_TIME
);
1543 if (bmval0
& FATTR4_WORD0_RDATTR_ERROR
) {
1544 if ((buflen
-= 4) < 0)
1548 if (bmval0
& FATTR4_WORD0_ACL
) {
1549 struct nfs4_ace
*ace
;
1550 struct list_head
*h
;
1553 if ((buflen
-= 4) < 0)
1559 if ((buflen
-= 4) < 0)
1561 WRITE32(acl
->naces
);
1563 list_for_each(h
, &acl
->ace_head
) {
1564 ace
= list_entry(h
, struct nfs4_ace
, l_ace
);
1566 if ((buflen
-= 4*3) < 0)
1570 WRITE32(ace
->access_mask
& NFS4_ACE_MASK_ALL
);
1571 status
= nfsd4_encode_aclname(rqstp
, ace
->whotype
,
1572 ace
->who
, ace
->flag
& NFS4_ACE_IDENTIFIER_GROUP
,
1574 if (status
== nfserr_resource
)
1581 if (bmval0
& FATTR4_WORD0_ACLSUPPORT
) {
1582 if ((buflen
-= 4) < 0)
1584 WRITE32(aclsupport
?
1585 ACL4_SUPPORT_ALLOW_ACL
|ACL4_SUPPORT_DENY_ACL
: 0);
1587 if (bmval0
& FATTR4_WORD0_CANSETTIME
) {
1588 if ((buflen
-= 4) < 0)
1592 if (bmval0
& FATTR4_WORD0_CASE_INSENSITIVE
) {
1593 if ((buflen
-= 4) < 0)
1597 if (bmval0
& FATTR4_WORD0_CASE_PRESERVING
) {
1598 if ((buflen
-= 4) < 0)
1602 if (bmval0
& FATTR4_WORD0_CHOWN_RESTRICTED
) {
1603 if ((buflen
-= 4) < 0)
1607 if (bmval0
& FATTR4_WORD0_FILEHANDLE
) {
1608 buflen
-= (XDR_QUADLEN(fhp
->fh_handle
.fh_size
) << 2) + 4;
1611 WRITE32(fhp
->fh_handle
.fh_size
);
1612 WRITEMEM(&fhp
->fh_handle
.fh_base
, fhp
->fh_handle
.fh_size
);
1614 if (bmval0
& FATTR4_WORD0_FILEID
) {
1615 if ((buflen
-= 8) < 0)
1617 WRITE64((u64
) stat
.ino
);
1619 if (bmval0
& FATTR4_WORD0_FILES_AVAIL
) {
1620 if ((buflen
-= 8) < 0)
1622 WRITE64((u64
) statfs
.f_ffree
);
1624 if (bmval0
& FATTR4_WORD0_FILES_FREE
) {
1625 if ((buflen
-= 8) < 0)
1627 WRITE64((u64
) statfs
.f_ffree
);
1629 if (bmval0
& FATTR4_WORD0_FILES_TOTAL
) {
1630 if ((buflen
-= 8) < 0)
1632 WRITE64((u64
) statfs
.f_files
);
1634 if (bmval0
& FATTR4_WORD0_FS_LOCATIONS
) {
1635 status
= nfsd4_encode_fs_locations(rqstp
, exp
, &p
, &buflen
);
1636 if (status
== nfserr_resource
)
1641 if (bmval0
& FATTR4_WORD0_HOMOGENEOUS
) {
1642 if ((buflen
-= 4) < 0)
1646 if (bmval0
& FATTR4_WORD0_MAXFILESIZE
) {
1647 if ((buflen
-= 8) < 0)
1651 if (bmval0
& FATTR4_WORD0_MAXLINK
) {
1652 if ((buflen
-= 4) < 0)
1656 if (bmval0
& FATTR4_WORD0_MAXNAME
) {
1657 if ((buflen
-= 4) < 0)
1661 if (bmval0
& FATTR4_WORD0_MAXREAD
) {
1662 if ((buflen
-= 8) < 0)
1664 WRITE64((u64
) svc_max_payload(rqstp
));
1666 if (bmval0
& FATTR4_WORD0_MAXWRITE
) {
1667 if ((buflen
-= 8) < 0)
1669 WRITE64((u64
) svc_max_payload(rqstp
));
1671 if (bmval1
& FATTR4_WORD1_MODE
) {
1672 if ((buflen
-= 4) < 0)
1674 WRITE32(stat
.mode
& S_IALLUGO
);
1676 if (bmval1
& FATTR4_WORD1_NO_TRUNC
) {
1677 if ((buflen
-= 4) < 0)
1681 if (bmval1
& FATTR4_WORD1_NUMLINKS
) {
1682 if ((buflen
-= 4) < 0)
1684 WRITE32(stat
.nlink
);
1686 if (bmval1
& FATTR4_WORD1_OWNER
) {
1687 status
= nfsd4_encode_user(rqstp
, stat
.uid
, &p
, &buflen
);
1688 if (status
== nfserr_resource
)
1693 if (bmval1
& FATTR4_WORD1_OWNER_GROUP
) {
1694 status
= nfsd4_encode_group(rqstp
, stat
.gid
, &p
, &buflen
);
1695 if (status
== nfserr_resource
)
1700 if (bmval1
& FATTR4_WORD1_RAWDEV
) {
1701 if ((buflen
-= 8) < 0)
1703 WRITE32((u32
) MAJOR(stat
.rdev
));
1704 WRITE32((u32
) MINOR(stat
.rdev
));
1706 if (bmval1
& FATTR4_WORD1_SPACE_AVAIL
) {
1707 if ((buflen
-= 8) < 0)
1709 dummy64
= (u64
)statfs
.f_bavail
* (u64
)statfs
.f_bsize
;
1712 if (bmval1
& FATTR4_WORD1_SPACE_FREE
) {
1713 if ((buflen
-= 8) < 0)
1715 dummy64
= (u64
)statfs
.f_bfree
* (u64
)statfs
.f_bsize
;
1718 if (bmval1
& FATTR4_WORD1_SPACE_TOTAL
) {
1719 if ((buflen
-= 8) < 0)
1721 dummy64
= (u64
)statfs
.f_blocks
* (u64
)statfs
.f_bsize
;
1724 if (bmval1
& FATTR4_WORD1_SPACE_USED
) {
1725 if ((buflen
-= 8) < 0)
1727 dummy64
= (u64
)stat
.blocks
<< 9;
1730 if (bmval1
& FATTR4_WORD1_TIME_ACCESS
) {
1731 if ((buflen
-= 12) < 0)
1734 WRITE32(stat
.atime
.tv_sec
);
1735 WRITE32(stat
.atime
.tv_nsec
);
1737 if (bmval1
& FATTR4_WORD1_TIME_DELTA
) {
1738 if ((buflen
-= 12) < 0)
1744 if (bmval1
& FATTR4_WORD1_TIME_METADATA
) {
1745 if ((buflen
-= 12) < 0)
1748 WRITE32(stat
.ctime
.tv_sec
);
1749 WRITE32(stat
.ctime
.tv_nsec
);
1751 if (bmval1
& FATTR4_WORD1_TIME_MODIFY
) {
1752 if ((buflen
-= 12) < 0)
1755 WRITE32(stat
.mtime
.tv_sec
);
1756 WRITE32(stat
.mtime
.tv_nsec
);
1758 if (bmval1
& FATTR4_WORD1_MOUNTED_ON_FILEID
) {
1759 struct dentry
*mnt_pnt
, *mnt_root
;
1761 if ((buflen
-= 8) < 0)
1763 mnt_root
= exp
->ex_mnt
->mnt_root
;
1764 if (mnt_root
->d_inode
== dentry
->d_inode
) {
1765 mnt_pnt
= exp
->ex_mnt
->mnt_mountpoint
;
1766 WRITE64((u64
) mnt_pnt
->d_inode
->i_ino
);
1768 WRITE64((u64
) stat
.ino
);
1770 *attrlenp
= htonl((char *)p
- (char *)attrlenp
- 4);
1771 *countp
= p
- buffer
;
1780 status
= nfserrno(status
);
1784 status
= nfserr_resource
;
1787 status
= nfserr_serverfault
;
1792 nfsd4_encode_dirent_fattr(struct nfsd4_readdir
*cd
,
1793 const char *name
, int namlen
, u32
*p
, int *buflen
)
1795 struct svc_export
*exp
= cd
->rd_fhp
->fh_export
;
1796 struct dentry
*dentry
;
1799 dentry
= lookup_one_len(name
, cd
->rd_fhp
->fh_dentry
, namlen
);
1801 return nfserrno(PTR_ERR(dentry
));
1804 if (d_mountpoint(dentry
)) {
1805 if (nfsd_cross_mnt(cd
->rd_rqstp
, &dentry
, &exp
)) {
1807 * -EAGAIN is the only error returned from
1808 * nfsd_cross_mnt() and it indicates that an
1809 * up-call has been initiated to fill in the export
1810 * options on exp. When the answer comes back,
1811 * this call will be retried.
1813 nfserr
= nfserr_dropit
;
1818 nfserr
= nfsd4_encode_fattr(NULL
, exp
, dentry
, p
, buflen
, cd
->rd_bmval
,
1827 nfsd4_encode_rdattr_error(u32
*p
, int buflen
, int nfserr
)
1834 *p
++ = htonl(FATTR4_WORD0_RDATTR_ERROR
); /* bmval0 */
1835 *p
++ = htonl(0); /* bmval1 */
1838 *p
++ = nfserr
; /* no htonl */
1839 *attrlenp
= htonl((char *)p
- (char *)attrlenp
- 4);
1844 nfsd4_encode_dirent(struct readdir_cd
*ccd
, const char *name
, int namlen
,
1845 loff_t offset
, ino_t ino
, unsigned int d_type
)
1847 struct nfsd4_readdir
*cd
= container_of(ccd
, struct nfsd4_readdir
, common
);
1849 u32
*p
= cd
->buffer
;
1850 int nfserr
= nfserr_toosmall
;
1852 /* In nfsv4, "." and ".." never make it onto the wire.. */
1853 if (name
&& isdotent(name
, namlen
)) {
1854 cd
->common
.err
= nfs_ok
;
1859 xdr_encode_hyper(cd
->offset
, (u64
) offset
);
1861 buflen
= cd
->buflen
- 4 - XDR_QUADLEN(namlen
);
1865 *p
++ = xdr_one
; /* mark entry present */
1866 cd
->offset
= p
; /* remember pointer */
1867 p
= xdr_encode_hyper(p
, NFS_OFFSET_MAX
); /* offset of next entry */
1868 p
= xdr_encode_array(p
, name
, namlen
); /* name length & name */
1870 nfserr
= nfsd4_encode_dirent_fattr(cd
, name
, namlen
, p
, &buflen
);
1875 case nfserr_resource
:
1876 nfserr
= nfserr_toosmall
;
1882 * If the client requested the RDATTR_ERROR attribute,
1883 * we stuff the error code into this attribute
1884 * and continue. If this attribute was not requested,
1885 * then in accordance with the spec, we fail the
1886 * entire READDIR operation(!)
1888 if (!(cd
->rd_bmval
[0] & FATTR4_WORD0_RDATTR_ERROR
))
1890 p
= nfsd4_encode_rdattr_error(p
, buflen
, nfserr
);
1892 nfserr
= nfserr_toosmall
;
1896 cd
->buflen
-= (p
- cd
->buffer
);
1898 cd
->common
.err
= nfs_ok
;
1901 cd
->common
.err
= nfserr
;
1906 nfsd4_encode_access(struct nfsd4_compoundres
*resp
, int nfserr
, struct nfsd4_access
*access
)
1912 WRITE32(access
->ac_supported
);
1913 WRITE32(access
->ac_resp_access
);
1919 nfsd4_encode_close(struct nfsd4_compoundres
*resp
, int nfserr
, struct nfsd4_close
*close
)
1921 ENCODE_SEQID_OP_HEAD
;
1924 RESERVE_SPACE(sizeof(stateid_t
));
1925 WRITE32(close
->cl_stateid
.si_generation
);
1926 WRITEMEM(&close
->cl_stateid
.si_opaque
, sizeof(stateid_opaque_t
));
1929 ENCODE_SEQID_OP_TAIL(close
->cl_stateowner
);
1934 nfsd4_encode_commit(struct nfsd4_compoundres
*resp
, int nfserr
, struct nfsd4_commit
*commit
)
1940 WRITEMEM(commit
->co_verf
.data
, 8);
1946 nfsd4_encode_create(struct nfsd4_compoundres
*resp
, int nfserr
, struct nfsd4_create
*create
)
1952 WRITECINFO(create
->cr_cinfo
);
1954 WRITE32(create
->cr_bmval
[0]);
1955 WRITE32(create
->cr_bmval
[1]);
1961 nfsd4_encode_getattr(struct nfsd4_compoundres
*resp
, int nfserr
, struct nfsd4_getattr
*getattr
)
1963 struct svc_fh
*fhp
= getattr
->ga_fhp
;
1969 buflen
= resp
->end
- resp
->p
- (COMPOUND_ERR_SLACK_SPACE
>> 2);
1970 nfserr
= nfsd4_encode_fattr(fhp
, fhp
->fh_export
, fhp
->fh_dentry
,
1971 resp
->p
, &buflen
, getattr
->ga_bmval
,
1980 nfsd4_encode_getfh(struct nfsd4_compoundres
*resp
, int nfserr
, struct svc_fh
*fhp
)
1986 len
= fhp
->fh_handle
.fh_size
;
1987 RESERVE_SPACE(len
+ 4);
1989 WRITEMEM(&fhp
->fh_handle
.fh_base
, len
);
1995 * Including all fields other than the name, a LOCK4denied structure requires
1996 * 8(clientid) + 4(namelen) + 8(offset) + 8(length) + 4(type) = 32 bytes.
1999 nfsd4_encode_lock_denied(struct nfsd4_compoundres
*resp
, struct nfsd4_lock_denied
*ld
)
2003 RESERVE_SPACE(32 + XDR_LEN(ld
->ld_sop
? ld
->ld_sop
->so_owner
.len
: 0));
2004 WRITE64(ld
->ld_start
);
2005 WRITE64(ld
->ld_length
);
2006 WRITE32(ld
->ld_type
);
2008 WRITEMEM(&ld
->ld_clientid
, 8);
2009 WRITE32(ld
->ld_sop
->so_owner
.len
);
2010 WRITEMEM(ld
->ld_sop
->so_owner
.data
, ld
->ld_sop
->so_owner
.len
);
2011 kref_put(&ld
->ld_sop
->so_ref
, nfs4_free_stateowner
);
2012 } else { /* non - nfsv4 lock in conflict, no clientid nor owner */
2013 WRITE64((u64
)0); /* clientid */
2014 WRITE32(0); /* length of owner name */
2020 nfsd4_encode_lock(struct nfsd4_compoundres
*resp
, int nfserr
, struct nfsd4_lock
*lock
)
2022 ENCODE_SEQID_OP_HEAD
;
2025 RESERVE_SPACE(4 + sizeof(stateid_t
));
2026 WRITE32(lock
->lk_resp_stateid
.si_generation
);
2027 WRITEMEM(&lock
->lk_resp_stateid
.si_opaque
, sizeof(stateid_opaque_t
));
2029 } else if (nfserr
== nfserr_denied
)
2030 nfsd4_encode_lock_denied(resp
, &lock
->lk_denied
);
2032 ENCODE_SEQID_OP_TAIL(lock
->lk_replay_owner
);
2036 nfsd4_encode_lockt(struct nfsd4_compoundres
*resp
, int nfserr
, struct nfsd4_lockt
*lockt
)
2038 if (nfserr
== nfserr_denied
)
2039 nfsd4_encode_lock_denied(resp
, &lockt
->lt_denied
);
2043 nfsd4_encode_locku(struct nfsd4_compoundres
*resp
, int nfserr
, struct nfsd4_locku
*locku
)
2045 ENCODE_SEQID_OP_HEAD
;
2048 RESERVE_SPACE(sizeof(stateid_t
));
2049 WRITE32(locku
->lu_stateid
.si_generation
);
2050 WRITEMEM(&locku
->lu_stateid
.si_opaque
, sizeof(stateid_opaque_t
));
2054 ENCODE_SEQID_OP_TAIL(locku
->lu_stateowner
);
2059 nfsd4_encode_link(struct nfsd4_compoundres
*resp
, int nfserr
, struct nfsd4_link
*link
)
2065 WRITECINFO(link
->li_cinfo
);
2072 nfsd4_encode_open(struct nfsd4_compoundres
*resp
, int nfserr
, struct nfsd4_open
*open
)
2074 ENCODE_SEQID_OP_HEAD
;
2079 RESERVE_SPACE(36 + sizeof(stateid_t
));
2080 WRITE32(open
->op_stateid
.si_generation
);
2081 WRITEMEM(&open
->op_stateid
.si_opaque
, sizeof(stateid_opaque_t
));
2082 WRITECINFO(open
->op_cinfo
);
2083 WRITE32(open
->op_rflags
);
2085 WRITE32(open
->op_bmval
[0]);
2086 WRITE32(open
->op_bmval
[1]);
2087 WRITE32(open
->op_delegate_type
);
2090 switch (open
->op_delegate_type
) {
2091 case NFS4_OPEN_DELEGATE_NONE
:
2093 case NFS4_OPEN_DELEGATE_READ
:
2094 RESERVE_SPACE(20 + sizeof(stateid_t
));
2095 WRITEMEM(&open
->op_delegate_stateid
, sizeof(stateid_t
));
2096 WRITE32(open
->op_recall
);
2099 * TODO: ACE's in delegations
2101 WRITE32(NFS4_ACE_ACCESS_ALLOWED_ACE_TYPE
);
2104 WRITE32(0); /* XXX: is NULL principal ok? */
2107 case NFS4_OPEN_DELEGATE_WRITE
:
2108 RESERVE_SPACE(32 + sizeof(stateid_t
));
2109 WRITEMEM(&open
->op_delegate_stateid
, sizeof(stateid_t
));
2113 * TODO: space_limit's in delegations
2115 WRITE32(NFS4_LIMIT_SIZE
);
2120 * TODO: ACE's in delegations
2122 WRITE32(NFS4_ACE_ACCESS_ALLOWED_ACE_TYPE
);
2125 WRITE32(0); /* XXX: is NULL principal ok? */
2131 /* XXX save filehandle here */
2133 ENCODE_SEQID_OP_TAIL(open
->op_stateowner
);
2137 nfsd4_encode_open_confirm(struct nfsd4_compoundres
*resp
, int nfserr
, struct nfsd4_open_confirm
*oc
)
2139 ENCODE_SEQID_OP_HEAD
;
2142 RESERVE_SPACE(sizeof(stateid_t
));
2143 WRITE32(oc
->oc_resp_stateid
.si_generation
);
2144 WRITEMEM(&oc
->oc_resp_stateid
.si_opaque
, sizeof(stateid_opaque_t
));
2148 ENCODE_SEQID_OP_TAIL(oc
->oc_stateowner
);
2152 nfsd4_encode_open_downgrade(struct nfsd4_compoundres
*resp
, int nfserr
, struct nfsd4_open_downgrade
*od
)
2154 ENCODE_SEQID_OP_HEAD
;
2157 RESERVE_SPACE(sizeof(stateid_t
));
2158 WRITE32(od
->od_stateid
.si_generation
);
2159 WRITEMEM(&od
->od_stateid
.si_opaque
, sizeof(stateid_opaque_t
));
2163 ENCODE_SEQID_OP_TAIL(od
->od_stateowner
);
2167 nfsd4_encode_read(struct nfsd4_compoundres
*resp
, int nfserr
,
2168 struct nfsd4_read
*read
)
2172 unsigned long maxcount
;
2178 if (resp
->xbuf
->page_len
)
2179 return nfserr_resource
;
2181 RESERVE_SPACE(8); /* eof flag and byte count */
2183 maxcount
= svc_max_payload(resp
->rqstp
);
2184 if (maxcount
> read
->rd_length
)
2185 maxcount
= read
->rd_length
;
2190 pn
= resp
->rqstp
->rq_resused
++;
2191 resp
->rqstp
->rq_vec
[v
].iov_base
=
2192 page_address(resp
->rqstp
->rq_respages
[pn
]);
2193 resp
->rqstp
->rq_vec
[v
].iov_len
=
2194 len
< PAGE_SIZE
? len
: PAGE_SIZE
;
2200 nfserr
= nfsd_read(read
->rd_rqstp
, read
->rd_fhp
, read
->rd_filp
,
2201 read
->rd_offset
, resp
->rqstp
->rq_vec
, read
->rd_vlen
,
2204 if (nfserr
== nfserr_symlink
)
2205 nfserr
= nfserr_inval
;
2208 eof
= (read
->rd_offset
+ maxcount
>=
2209 read
->rd_fhp
->fh_dentry
->d_inode
->i_size
);
2214 resp
->xbuf
->head
[0].iov_len
= (char*)p
2215 - (char*)resp
->xbuf
->head
[0].iov_base
;
2216 resp
->xbuf
->page_len
= maxcount
;
2218 /* Use rest of head for padding and remaining ops: */
2219 resp
->xbuf
->tail
[0].iov_base
= p
;
2220 resp
->xbuf
->tail
[0].iov_len
= 0;
2224 resp
->xbuf
->tail
[0].iov_base
+= maxcount
&3;
2225 resp
->xbuf
->tail
[0].iov_len
= 4 - (maxcount
&3);
2232 nfsd4_encode_readlink(struct nfsd4_compoundres
*resp
, int nfserr
, struct nfsd4_readlink
*readlink
)
2240 if (resp
->xbuf
->page_len
)
2241 return nfserr_resource
;
2243 page
= page_address(resp
->rqstp
->rq_respages
[resp
->rqstp
->rq_resused
++]);
2245 maxcount
= PAGE_SIZE
;
2249 * XXX: By default, the ->readlink() VFS op will truncate symlinks
2250 * if they would overflow the buffer. Is this kosher in NFSv4? If
2251 * not, one easy fix is: if ->readlink() precisely fills the buffer,
2252 * assume that truncation occurred, and return NFS4ERR_RESOURCE.
2254 nfserr
= nfsd_readlink(readlink
->rl_rqstp
, readlink
->rl_fhp
, page
, &maxcount
);
2255 if (nfserr
== nfserr_isdir
)
2256 return nfserr_inval
;
2262 resp
->xbuf
->head
[0].iov_len
= (char*)p
2263 - (char*)resp
->xbuf
->head
[0].iov_base
;
2264 resp
->xbuf
->page_len
= maxcount
;
2266 /* Use rest of head for padding and remaining ops: */
2267 resp
->xbuf
->tail
[0].iov_base
= p
;
2268 resp
->xbuf
->tail
[0].iov_len
= 0;
2272 resp
->xbuf
->tail
[0].iov_base
+= maxcount
&3;
2273 resp
->xbuf
->tail
[0].iov_len
= 4 - (maxcount
&3);
2280 nfsd4_encode_readdir(struct nfsd4_compoundres
*resp
, int nfserr
, struct nfsd4_readdir
*readdir
)
2284 u32
*page
, *savep
, *tailbase
;
2289 if (resp
->xbuf
->page_len
)
2290 return nfserr_resource
;
2292 RESERVE_SPACE(8); /* verifier */
2295 /* XXX: Following NFSv3, we ignore the READDIR verifier for now. */
2299 resp
->xbuf
->head
[0].iov_len
= ((char*)resp
->p
) - (char*)resp
->xbuf
->head
[0].iov_base
;
2302 maxcount
= PAGE_SIZE
;
2303 if (maxcount
> readdir
->rd_maxcount
)
2304 maxcount
= readdir
->rd_maxcount
;
2307 * Convert from bytes to words, account for the two words already
2308 * written, make sure to leave two words at the end for the next
2309 * pointer and eof field.
2311 maxcount
= (maxcount
>> 2) - 4;
2313 nfserr
= nfserr_toosmall
;
2317 page
= page_address(resp
->rqstp
->rq_respages
[resp
->rqstp
->rq_resused
++]);
2318 readdir
->common
.err
= 0;
2319 readdir
->buflen
= maxcount
;
2320 readdir
->buffer
= page
;
2321 readdir
->offset
= NULL
;
2323 offset
= readdir
->rd_cookie
;
2324 nfserr
= nfsd_readdir(readdir
->rd_rqstp
, readdir
->rd_fhp
,
2326 &readdir
->common
, nfsd4_encode_dirent
);
2327 if (nfserr
== nfs_ok
&&
2328 readdir
->common
.err
== nfserr_toosmall
&&
2329 readdir
->buffer
== page
)
2330 nfserr
= nfserr_toosmall
;
2331 if (nfserr
== nfserr_symlink
)
2332 nfserr
= nfserr_notdir
;
2336 if (readdir
->offset
)
2337 xdr_encode_hyper(readdir
->offset
, offset
);
2339 p
= readdir
->buffer
;
2340 *p
++ = 0; /* no more entries */
2341 *p
++ = htonl(readdir
->common
.err
== nfserr_eof
);
2342 resp
->xbuf
->page_len
= ((char*)p
) - (char*)page_address(
2343 resp
->rqstp
->rq_respages
[resp
->rqstp
->rq_resused
-1]);
2345 /* Use rest of head for padding and remaining ops: */
2346 resp
->xbuf
->tail
[0].iov_base
= tailbase
;
2347 resp
->xbuf
->tail
[0].iov_len
= 0;
2348 resp
->p
= resp
->xbuf
->tail
[0].iov_base
;
2349 resp
->end
= resp
->p
+ (PAGE_SIZE
- resp
->xbuf
->head
[0].iov_len
)/4;
2359 nfsd4_encode_remove(struct nfsd4_compoundres
*resp
, int nfserr
, struct nfsd4_remove
*remove
)
2365 WRITECINFO(remove
->rm_cinfo
);
2371 nfsd4_encode_rename(struct nfsd4_compoundres
*resp
, int nfserr
, struct nfsd4_rename
*rename
)
2377 WRITECINFO(rename
->rn_sinfo
);
2378 WRITECINFO(rename
->rn_tinfo
);
2384 * The SETATTR encode routine is special -- it always encodes a bitmap,
2385 * regardless of the error status.
2388 nfsd4_encode_setattr(struct nfsd4_compoundres
*resp
, int nfserr
, struct nfsd4_setattr
*setattr
)
2400 WRITE32(setattr
->sa_bmval
[0]);
2401 WRITE32(setattr
->sa_bmval
[1]);
2407 nfsd4_encode_setclientid(struct nfsd4_compoundres
*resp
, int nfserr
, struct nfsd4_setclientid
*scd
)
2412 RESERVE_SPACE(8 + sizeof(nfs4_verifier
));
2413 WRITEMEM(&scd
->se_clientid
, 8);
2414 WRITEMEM(&scd
->se_confirm
, sizeof(nfs4_verifier
));
2417 else if (nfserr
== nfserr_clid_inuse
) {
2426 nfsd4_encode_write(struct nfsd4_compoundres
*resp
, int nfserr
, struct nfsd4_write
*write
)
2432 WRITE32(write
->wr_bytes_written
);
2433 WRITE32(write
->wr_how_written
);
2434 WRITEMEM(write
->wr_verifier
.data
, 8);
2440 nfsd4_encode_operation(struct nfsd4_compoundres
*resp
, struct nfsd4_op
*op
)
2447 statp
= p
++; /* to be backfilled at the end */
2450 switch (op
->opnum
) {
2452 nfsd4_encode_access(resp
, op
->status
, &op
->u
.access
);
2455 nfsd4_encode_close(resp
, op
->status
, &op
->u
.close
);
2458 nfsd4_encode_commit(resp
, op
->status
, &op
->u
.commit
);
2461 nfsd4_encode_create(resp
, op
->status
, &op
->u
.create
);
2463 case OP_DELEGRETURN
:
2466 op
->status
= nfsd4_encode_getattr(resp
, op
->status
, &op
->u
.getattr
);
2469 nfsd4_encode_getfh(resp
, op
->status
, op
->u
.getfh
);
2472 nfsd4_encode_link(resp
, op
->status
, &op
->u
.link
);
2475 nfsd4_encode_lock(resp
, op
->status
, &op
->u
.lock
);
2478 nfsd4_encode_lockt(resp
, op
->status
, &op
->u
.lockt
);
2481 nfsd4_encode_locku(resp
, op
->status
, &op
->u
.locku
);
2490 nfsd4_encode_open(resp
, op
->status
, &op
->u
.open
);
2492 case OP_OPEN_CONFIRM
:
2493 nfsd4_encode_open_confirm(resp
, op
->status
, &op
->u
.open_confirm
);
2495 case OP_OPEN_DOWNGRADE
:
2496 nfsd4_encode_open_downgrade(resp
, op
->status
, &op
->u
.open_downgrade
);
2503 op
->status
= nfsd4_encode_read(resp
, op
->status
, &op
->u
.read
);
2506 op
->status
= nfsd4_encode_readdir(resp
, op
->status
, &op
->u
.readdir
);
2509 op
->status
= nfsd4_encode_readlink(resp
, op
->status
, &op
->u
.readlink
);
2512 nfsd4_encode_remove(resp
, op
->status
, &op
->u
.remove
);
2515 nfsd4_encode_rename(resp
, op
->status
, &op
->u
.rename
);
2524 nfsd4_encode_setattr(resp
, op
->status
, &op
->u
.setattr
);
2526 case OP_SETCLIENTID
:
2527 nfsd4_encode_setclientid(resp
, op
->status
, &op
->u
.setclientid
);
2529 case OP_SETCLIENTID_CONFIRM
:
2534 nfsd4_encode_write(resp
, op
->status
, &op
->u
.write
);
2536 case OP_RELEASE_LOCKOWNER
:
2543 * Note: We write the status directly, instead of using WRITE32(),
2544 * since it is already in network byte order.
2546 *statp
= op
->status
;
2550 * Encode the reply stored in the stateowner reply cache
2552 * XDR note: do not encode rp->rp_buflen: the buffer contains the
2553 * previously sent already encoded operation.
2555 * called with nfs4_lock_state() held
2558 nfsd4_encode_replay(struct nfsd4_compoundres
*resp
, struct nfsd4_op
*op
)
2561 struct nfs4_replay
*rp
= op
->replay
;
2567 *p
++ = rp
->rp_status
; /* already xdr'ed */
2570 RESERVE_SPACE(rp
->rp_buflen
);
2571 WRITEMEM(rp
->rp_buf
, rp
->rp_buflen
);
2576 * END OF "GENERIC" ENCODE ROUTINES.
2580 nfs4svc_encode_voidres(struct svc_rqst
*rqstp
, u32
*p
, void *dummy
)
2582 return xdr_ressize_check(rqstp
, p
);
2585 void nfsd4_release_compoundargs(struct nfsd4_compoundargs
*args
)
2587 if (args
->ops
!= args
->iops
) {
2589 args
->ops
= args
->iops
;
2593 while (args
->to_free
) {
2594 struct tmpbuf
*tb
= args
->to_free
;
2595 args
->to_free
= tb
->next
;
2596 tb
->release(tb
->buf
);
2602 nfs4svc_decode_compoundargs(struct svc_rqst
*rqstp
, u32
*p
, struct nfsd4_compoundargs
*args
)
2607 args
->end
= rqstp
->rq_arg
.head
[0].iov_base
+ rqstp
->rq_arg
.head
[0].iov_len
;
2608 args
->pagelist
= rqstp
->rq_arg
.pages
;
2609 args
->pagelen
= rqstp
->rq_arg
.page_len
;
2611 args
->to_free
= NULL
;
2612 args
->ops
= args
->iops
;
2613 args
->rqstp
= rqstp
;
2615 status
= nfsd4_decode_compound(args
);
2617 nfsd4_release_compoundargs(args
);
2623 nfs4svc_encode_compoundres(struct svc_rqst
*rqstp
, u32
*p
, struct nfsd4_compoundres
*resp
)
2626 * All that remains is to write the tag and operation count...
2630 *p
++ = htonl(resp
->taglen
);
2631 memcpy(p
, resp
->tag
, resp
->taglen
);
2632 p
+= XDR_QUADLEN(resp
->taglen
);
2633 *p
++ = htonl(resp
->opcnt
);
2635 if (rqstp
->rq_res
.page_len
)
2636 iov
= &rqstp
->rq_res
.tail
[0];
2638 iov
= &rqstp
->rq_res
.head
[0];
2639 iov
->iov_len
= ((char*)resp
->p
) - (char*)iov
->iov_base
;
2640 BUG_ON(iov
->iov_len
> PAGE_SIZE
);