2 * Server-side XDR 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 * TODO: Neil Brown made the following observation: We currently
36 * initially reserve NFSD_BUFSIZE space on the transmit queue and
37 * never release any of that until the request is complete.
38 * It would be good to calculate a new maximum response size while
39 * decoding the COMPOUND, and call svc_reserve with this number
40 * at the end of nfs4svc_decode_compoundargs.
43 #include <linux/slab.h>
44 #include <linux/namei.h>
45 #include <linux/statfs.h>
46 #include <linux/utsname.h>
47 #include <linux/pagemap.h>
48 #include <linux/sunrpc/svcauth_gss.h>
58 #define NFSDDBG_FACILITY NFSDDBG_XDR
61 * As per referral draft, the fsid for a referral MUST be different from the fsid of the containing
62 * directory in order to indicate to the client that a filesystem boundary is present
63 * We use a fixed fsid for a referral
65 #define NFS4_REFERRAL_FSID_MAJOR 0x8000000ULL
66 #define NFS4_REFERRAL_FSID_MINOR 0x8000000ULL
69 check_filename(char *str
, int len
)
75 if (isdotent(str
, len
))
76 return nfserr_badname
;
77 for (i
= 0; i
< len
; i
++)
79 return nfserr_badname
;
91 dprintk("NFSD: xdr error (%s:%d)\n", \
92 __FILE__, __LINE__); \
93 status = nfserr_bad_xdr; \
96 #define READ32(x) (x) = ntohl(*p++)
97 #define READ64(x) do { \
98 (x) = (u64)ntohl(*p++) << 32; \
101 #define READTIME(x) do { \
106 #define READMEM(x,nbytes) do { \
108 p += XDR_QUADLEN(nbytes); \
110 #define SAVEMEM(x,nbytes) do { \
111 if (!(x = (p==argp->tmp || p == argp->tmpp) ? \
112 savemem(argp, p, nbytes) : \
114 dprintk("NFSD: xdr error (%s:%d)\n", \
115 __FILE__, __LINE__); \
118 p += XDR_QUADLEN(nbytes); \
120 #define COPYMEM(x,nbytes) do { \
121 memcpy((x), p, nbytes); \
122 p += XDR_QUADLEN(nbytes); \
125 /* READ_BUF, read_buf(): nbytes must be <= PAGE_SIZE */
126 #define READ_BUF(nbytes) do { \
127 if (nbytes <= (u32)((char *)argp->end - (char *)argp->p)) { \
129 argp->p += XDR_QUADLEN(nbytes); \
130 } else if (!(p = read_buf(argp, nbytes))) { \
131 dprintk("NFSD: xdr error (%s:%d)\n", \
132 __FILE__, __LINE__); \
137 static __be32
*read_buf(struct nfsd4_compoundargs
*argp
, u32 nbytes
)
139 /* We want more bytes than seem to be available.
140 * Maybe we need a new page, maybe we have just run out
142 unsigned int avail
= (char *)argp
->end
- (char *)argp
->p
;
144 if (avail
+ argp
->pagelen
< nbytes
)
146 if (avail
+ PAGE_SIZE
< nbytes
) /* need more than a page !! */
148 /* ok, we can do it with the current plus the next page */
149 if (nbytes
<= sizeof(argp
->tmp
))
153 p
= argp
->tmpp
= kmalloc(nbytes
, GFP_KERNEL
);
159 * The following memcpy is safe because read_buf is always
160 * called with nbytes > avail, and the two cases above both
161 * guarantee p points to at least nbytes bytes.
163 memcpy(p
, argp
->p
, avail
);
164 /* step to next page */
165 argp
->p
= page_address(argp
->pagelist
[0]);
167 if (argp
->pagelen
< PAGE_SIZE
) {
168 argp
->end
= argp
->p
+ (argp
->pagelen
>>2);
171 argp
->end
= argp
->p
+ (PAGE_SIZE
>>2);
172 argp
->pagelen
-= PAGE_SIZE
;
174 memcpy(((char*)p
)+avail
, argp
->p
, (nbytes
- avail
));
175 argp
->p
+= XDR_QUADLEN(nbytes
- avail
);
179 static int zero_clientid(clientid_t
*clid
)
181 return (clid
->cl_boot
== 0) && (clid
->cl_id
== 0);
185 defer_free(struct nfsd4_compoundargs
*argp
,
186 void (*release
)(const void *), void *p
)
190 tb
= kmalloc(sizeof(*tb
), GFP_KERNEL
);
194 tb
->release
= release
;
195 tb
->next
= argp
->to_free
;
200 static char *savemem(struct nfsd4_compoundargs
*argp
, __be32
*p
, int nbytes
)
202 if (p
== argp
->tmp
) {
203 p
= kmemdup(argp
->tmp
, nbytes
, GFP_KERNEL
);
207 BUG_ON(p
!= argp
->tmpp
);
210 if (defer_free(argp
, kfree
, p
)) {
218 nfsd4_decode_bitmap(struct nfsd4_compoundargs
*argp
, u32
*bmval
)
232 READ_BUF(bmlen
<< 2);
244 nfsd4_decode_fattr(struct nfsd4_compoundargs
*argp
, u32
*bmval
,
245 struct iattr
*iattr
, struct nfs4_acl
**acl
)
247 int expected_len
, len
= 0;
254 if ((status
= nfsd4_decode_bitmap(argp
, bmval
)))
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
) {
268 struct nfs4_ace
*ace
;
270 READ_BUF(4); len
+= 4;
273 if (nace
> NFS4_ACL_MAX
)
274 return nfserr_resource
;
276 *acl
= nfs4_acl_new(nace
);
281 defer_free(argp
, kfree
, *acl
);
283 (*acl
)->naces
= nace
;
284 for (ace
= (*acl
)->aces
; ace
< (*acl
)->aces
+ nace
; ace
++) {
285 READ_BUF(16); len
+= 16;
288 READ32(ace
->access_mask
);
291 len
+= XDR_QUADLEN(dummy32
) << 2;
292 READMEM(buf
, dummy32
);
293 ace
->whotype
= nfs4_acl_get_whotype(buf
, dummy32
);
295 if (ace
->whotype
!= NFS4_ACL_WHO_NAMED
)
297 else if (ace
->flag
& NFS4_ACE_IDENTIFIER_GROUP
)
298 status
= nfsd_map_name_to_gid(argp
->rqstp
,
299 buf
, dummy32
, &ace
->who
);
301 status
= nfsd_map_name_to_uid(argp
->rqstp
,
302 buf
, dummy32
, &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_MODIFY_SET
) {
368 case NFS4_SET_TO_CLIENT_TIME
:
369 /* We require the high 32 bits of 'seconds' to be 0, and we ignore
370 all 32 bits of 'nseconds'. */
376 READ32(iattr
->ia_mtime
.tv_sec
);
377 READ32(iattr
->ia_mtime
.tv_nsec
);
378 if (iattr
->ia_mtime
.tv_nsec
>= (u32
)1000000000)
380 iattr
->ia_valid
|= (ATTR_MTIME
| ATTR_MTIME_SET
);
382 case NFS4_SET_TO_SERVER_TIME
:
383 iattr
->ia_valid
|= ATTR_MTIME
;
389 if (bmval
[0] & ~NFSD_WRITEABLE_ATTRS_WORD0
390 || bmval
[1] & ~NFSD_WRITEABLE_ATTRS_WORD1
391 || bmval
[2] & ~NFSD_WRITEABLE_ATTRS_WORD2
)
392 READ_BUF(expected_len
- len
);
393 else if (len
!= expected_len
)
399 status
= nfserrno(host_err
);
404 nfsd4_decode_stateid(struct nfsd4_compoundargs
*argp
, stateid_t
*sid
)
408 READ_BUF(sizeof(stateid_t
));
409 READ32(sid
->si_generation
);
410 COPYMEM(&sid
->si_opaque
, sizeof(stateid_opaque_t
));
416 nfsd4_decode_access(struct nfsd4_compoundargs
*argp
, struct nfsd4_access
*access
)
421 READ32(access
->ac_req_access
);
426 static __be32
nfsd4_decode_cb_sec(struct nfsd4_compoundargs
*argp
, struct nfsd4_cb_sec
*cbs
)
434 /* callback_sec_params4 */
437 cbs
->flavor
= (u32
)(-1);
438 for (i
= 0; i
< nr_secflavs
; ++i
) {
443 /* Nothing to read */
444 if (cbs
->flavor
== (u32
)(-1))
445 cbs
->flavor
= RPC_AUTH_NULL
;
455 SAVEMEM(machine_name
, dummy
);
466 if (cbs
->flavor
== (u32
)(-1)) {
469 cbs
->flavor
= RPC_AUTH_UNIX
;
473 dprintk("RPC_AUTH_GSS callback secflavor "
478 /* gcbp_handle_from_server */
481 p
+= XDR_QUADLEN(dummy
);
482 /* gcbp_handle_from_client */
488 dprintk("Illegal callback secflavor\n");
495 static __be32
nfsd4_decode_backchannel_ctl(struct nfsd4_compoundargs
*argp
, struct nfsd4_backchannel_ctl
*bc
)
500 READ32(bc
->bc_cb_program
);
501 nfsd4_decode_cb_sec(argp
, &bc
->bc_cb_sec
);
506 static __be32
nfsd4_decode_bind_conn_to_session(struct nfsd4_compoundargs
*argp
, struct nfsd4_bind_conn_to_session
*bcts
)
510 READ_BUF(NFS4_MAX_SESSIONID_LEN
+ 8);
511 COPYMEM(bcts
->sessionid
.data
, NFS4_MAX_SESSIONID_LEN
);
513 /* XXX: skipping ctsa_use_conn_in_rdma_mode. Perhaps Tom Tucker
514 * could help us figure out we should be using it. */
519 nfsd4_decode_close(struct nfsd4_compoundargs
*argp
, struct nfsd4_close
*close
)
524 READ32(close
->cl_seqid
);
525 return nfsd4_decode_stateid(argp
, &close
->cl_stateid
);
532 nfsd4_decode_commit(struct nfsd4_compoundargs
*argp
, struct nfsd4_commit
*commit
)
537 READ64(commit
->co_offset
);
538 READ32(commit
->co_count
);
544 nfsd4_decode_create(struct nfsd4_compoundargs
*argp
, struct nfsd4_create
*create
)
549 READ32(create
->cr_type
);
550 switch (create
->cr_type
) {
553 READ32(create
->cr_linklen
);
554 READ_BUF(create
->cr_linklen
);
555 SAVEMEM(create
->cr_linkname
, create
->cr_linklen
);
560 READ32(create
->cr_specdata1
);
561 READ32(create
->cr_specdata2
);
571 READ32(create
->cr_namelen
);
572 READ_BUF(create
->cr_namelen
);
573 SAVEMEM(create
->cr_name
, create
->cr_namelen
);
574 if ((status
= check_filename(create
->cr_name
, create
->cr_namelen
)))
577 status
= nfsd4_decode_fattr(argp
, create
->cr_bmval
, &create
->cr_iattr
,
586 nfsd4_decode_delegreturn(struct nfsd4_compoundargs
*argp
, struct nfsd4_delegreturn
*dr
)
588 return nfsd4_decode_stateid(argp
, &dr
->dr_stateid
);
592 nfsd4_decode_getattr(struct nfsd4_compoundargs
*argp
, struct nfsd4_getattr
*getattr
)
594 return nfsd4_decode_bitmap(argp
, getattr
->ga_bmval
);
598 nfsd4_decode_link(struct nfsd4_compoundargs
*argp
, struct nfsd4_link
*link
)
603 READ32(link
->li_namelen
);
604 READ_BUF(link
->li_namelen
);
605 SAVEMEM(link
->li_name
, link
->li_namelen
);
606 if ((status
= check_filename(link
->li_name
, link
->li_namelen
)))
613 nfsd4_decode_lock(struct nfsd4_compoundargs
*argp
, struct nfsd4_lock
*lock
)
618 * type, reclaim(boolean), offset, length, new_lock_owner(boolean)
621 READ32(lock
->lk_type
);
622 if ((lock
->lk_type
< NFS4_READ_LT
) || (lock
->lk_type
> NFS4_WRITEW_LT
))
624 READ32(lock
->lk_reclaim
);
625 READ64(lock
->lk_offset
);
626 READ64(lock
->lk_length
);
627 READ32(lock
->lk_is_new
);
629 if (lock
->lk_is_new
) {
631 READ32(lock
->lk_new_open_seqid
);
632 status
= nfsd4_decode_stateid(argp
, &lock
->lk_new_open_stateid
);
635 READ_BUF(8 + sizeof(clientid_t
));
636 READ32(lock
->lk_new_lock_seqid
);
637 COPYMEM(&lock
->lk_new_clientid
, sizeof(clientid_t
));
638 READ32(lock
->lk_new_owner
.len
);
639 READ_BUF(lock
->lk_new_owner
.len
);
640 READMEM(lock
->lk_new_owner
.data
, lock
->lk_new_owner
.len
);
642 status
= nfsd4_decode_stateid(argp
, &lock
->lk_old_lock_stateid
);
646 READ32(lock
->lk_old_lock_seqid
);
653 nfsd4_decode_lockt(struct nfsd4_compoundargs
*argp
, struct nfsd4_lockt
*lockt
)
658 READ32(lockt
->lt_type
);
659 if((lockt
->lt_type
< NFS4_READ_LT
) || (lockt
->lt_type
> NFS4_WRITEW_LT
))
661 READ64(lockt
->lt_offset
);
662 READ64(lockt
->lt_length
);
663 COPYMEM(&lockt
->lt_clientid
, 8);
664 READ32(lockt
->lt_owner
.len
);
665 READ_BUF(lockt
->lt_owner
.len
);
666 READMEM(lockt
->lt_owner
.data
, lockt
->lt_owner
.len
);
672 nfsd4_decode_locku(struct nfsd4_compoundargs
*argp
, struct nfsd4_locku
*locku
)
677 READ32(locku
->lu_type
);
678 if ((locku
->lu_type
< NFS4_READ_LT
) || (locku
->lu_type
> NFS4_WRITEW_LT
))
680 READ32(locku
->lu_seqid
);
681 status
= nfsd4_decode_stateid(argp
, &locku
->lu_stateid
);
685 READ64(locku
->lu_offset
);
686 READ64(locku
->lu_length
);
692 nfsd4_decode_lookup(struct nfsd4_compoundargs
*argp
, struct nfsd4_lookup
*lookup
)
697 READ32(lookup
->lo_len
);
698 READ_BUF(lookup
->lo_len
);
699 SAVEMEM(lookup
->lo_name
, lookup
->lo_len
);
700 if ((status
= check_filename(lookup
->lo_name
, lookup
->lo_len
)))
706 static __be32
nfsd4_decode_share_access(struct nfsd4_compoundargs
*argp
, u32
*share_access
, u32
*deleg_want
, u32
*deleg_when
)
713 *share_access
= w
& NFS4_SHARE_ACCESS_MASK
;
714 *deleg_want
= w
& NFS4_SHARE_WANT_MASK
;
716 *deleg_when
= w
& NFS4_SHARE_WHEN_MASK
;
718 switch (w
& NFS4_SHARE_ACCESS_MASK
) {
719 case NFS4_SHARE_ACCESS_READ
:
720 case NFS4_SHARE_ACCESS_WRITE
:
721 case NFS4_SHARE_ACCESS_BOTH
:
724 return nfserr_bad_xdr
;
726 w
&= ~NFS4_SHARE_ACCESS_MASK
;
729 if (!argp
->minorversion
)
730 return nfserr_bad_xdr
;
731 switch (w
& NFS4_SHARE_WANT_MASK
) {
732 case NFS4_SHARE_WANT_NO_PREFERENCE
:
733 case NFS4_SHARE_WANT_READ_DELEG
:
734 case NFS4_SHARE_WANT_WRITE_DELEG
:
735 case NFS4_SHARE_WANT_ANY_DELEG
:
736 case NFS4_SHARE_WANT_NO_DELEG
:
737 case NFS4_SHARE_WANT_CANCEL
:
740 return nfserr_bad_xdr
;
742 w
&= ~NFS4_SHARE_WANT_MASK
;
746 if (!deleg_when
) /* open_downgrade */
749 case NFS4_SHARE_SIGNAL_DELEG_WHEN_RESRC_AVAIL
:
750 case NFS4_SHARE_PUSH_DELEG_WHEN_UNCONTENDED
:
751 case (NFS4_SHARE_SIGNAL_DELEG_WHEN_RESRC_AVAIL
|
752 NFS4_SHARE_PUSH_DELEG_WHEN_UNCONTENDED
):
756 return nfserr_bad_xdr
;
759 static __be32
nfsd4_decode_share_deny(struct nfsd4_compoundargs
*argp
, u32
*x
)
765 /* Note: unlinke access bits, deny bits may be zero. */
766 if (*x
& ~NFS4_SHARE_DENY_BOTH
)
767 return nfserr_bad_xdr
;
770 return nfserr_bad_xdr
;
773 static __be32
nfsd4_decode_opaque(struct nfsd4_compoundargs
*argp
, struct xdr_netobj
*o
)
780 if (o
->len
== 0 || o
->len
> NFS4_OPAQUE_LIMIT
)
781 return nfserr_bad_xdr
;
784 SAVEMEM(o
->data
, o
->len
);
787 return nfserr_bad_xdr
;
791 nfsd4_decode_open(struct nfsd4_compoundargs
*argp
, struct nfsd4_open
*open
)
796 memset(open
->op_bmval
, 0, sizeof(open
->op_bmval
));
797 open
->op_iattr
.ia_valid
= 0;
798 open
->op_openowner
= NULL
;
800 /* seqid, share_access, share_deny, clientid, ownerlen */
802 READ32(open
->op_seqid
);
803 /* decode, yet ignore deleg_when until supported */
804 status
= nfsd4_decode_share_access(argp
, &open
->op_share_access
,
805 &open
->op_deleg_want
, &dummy
);
808 status
= nfsd4_decode_share_deny(argp
, &open
->op_share_deny
);
811 READ_BUF(sizeof(clientid_t
));
812 COPYMEM(&open
->op_clientid
, sizeof(clientid_t
));
813 status
= nfsd4_decode_opaque(argp
, &open
->op_owner
);
817 READ32(open
->op_create
);
818 switch (open
->op_create
) {
819 case NFS4_OPEN_NOCREATE
:
821 case NFS4_OPEN_CREATE
:
823 READ32(open
->op_createmode
);
824 switch (open
->op_createmode
) {
825 case NFS4_CREATE_UNCHECKED
:
826 case NFS4_CREATE_GUARDED
:
827 status
= nfsd4_decode_fattr(argp
, open
->op_bmval
,
828 &open
->op_iattr
, &open
->op_acl
);
832 case NFS4_CREATE_EXCLUSIVE
:
833 READ_BUF(NFS4_VERIFIER_SIZE
);
834 COPYMEM(open
->op_verf
.data
, NFS4_VERIFIER_SIZE
);
836 case NFS4_CREATE_EXCLUSIVE4_1
:
837 if (argp
->minorversion
< 1)
839 READ_BUF(NFS4_VERIFIER_SIZE
);
840 COPYMEM(open
->op_verf
.data
, NFS4_VERIFIER_SIZE
);
841 status
= nfsd4_decode_fattr(argp
, open
->op_bmval
,
842 &open
->op_iattr
, &open
->op_acl
);
856 READ32(open
->op_claim_type
);
857 switch (open
->op_claim_type
) {
858 case NFS4_OPEN_CLAIM_NULL
:
859 case NFS4_OPEN_CLAIM_DELEGATE_PREV
:
861 READ32(open
->op_fname
.len
);
862 READ_BUF(open
->op_fname
.len
);
863 SAVEMEM(open
->op_fname
.data
, open
->op_fname
.len
);
864 if ((status
= check_filename(open
->op_fname
.data
, open
->op_fname
.len
)))
867 case NFS4_OPEN_CLAIM_PREVIOUS
:
869 READ32(open
->op_delegate_type
);
871 case NFS4_OPEN_CLAIM_DELEGATE_CUR
:
872 status
= nfsd4_decode_stateid(argp
, &open
->op_delegate_stateid
);
876 READ32(open
->op_fname
.len
);
877 READ_BUF(open
->op_fname
.len
);
878 SAVEMEM(open
->op_fname
.data
, open
->op_fname
.len
);
879 if ((status
= check_filename(open
->op_fname
.data
, open
->op_fname
.len
)))
882 case NFS4_OPEN_CLAIM_FH
:
883 case NFS4_OPEN_CLAIM_DELEG_PREV_FH
:
884 if (argp
->minorversion
< 1)
888 case NFS4_OPEN_CLAIM_DELEG_CUR_FH
:
889 if (argp
->minorversion
< 1)
891 status
= nfsd4_decode_stateid(argp
, &open
->op_delegate_stateid
);
903 nfsd4_decode_open_confirm(struct nfsd4_compoundargs
*argp
, struct nfsd4_open_confirm
*open_conf
)
907 status
= nfsd4_decode_stateid(argp
, &open_conf
->oc_req_stateid
);
911 READ32(open_conf
->oc_seqid
);
917 nfsd4_decode_open_downgrade(struct nfsd4_compoundargs
*argp
, struct nfsd4_open_downgrade
*open_down
)
921 status
= nfsd4_decode_stateid(argp
, &open_down
->od_stateid
);
925 READ32(open_down
->od_seqid
);
926 status
= nfsd4_decode_share_access(argp
, &open_down
->od_share_access
,
927 &open_down
->od_deleg_want
, NULL
);
930 status
= nfsd4_decode_share_deny(argp
, &open_down
->od_share_deny
);
937 nfsd4_decode_putfh(struct nfsd4_compoundargs
*argp
, struct nfsd4_putfh
*putfh
)
942 READ32(putfh
->pf_fhlen
);
943 if (putfh
->pf_fhlen
> NFS4_FHSIZE
)
945 READ_BUF(putfh
->pf_fhlen
);
946 SAVEMEM(putfh
->pf_fhval
, putfh
->pf_fhlen
);
952 nfsd4_decode_read(struct nfsd4_compoundargs
*argp
, struct nfsd4_read
*read
)
956 status
= nfsd4_decode_stateid(argp
, &read
->rd_stateid
);
960 READ64(read
->rd_offset
);
961 READ32(read
->rd_length
);
967 nfsd4_decode_readdir(struct nfsd4_compoundargs
*argp
, struct nfsd4_readdir
*readdir
)
972 READ64(readdir
->rd_cookie
);
973 COPYMEM(readdir
->rd_verf
.data
, sizeof(readdir
->rd_verf
.data
));
974 READ32(readdir
->rd_dircount
); /* just in case you needed a useless field... */
975 READ32(readdir
->rd_maxcount
);
976 if ((status
= nfsd4_decode_bitmap(argp
, readdir
->rd_bmval
)))
983 nfsd4_decode_remove(struct nfsd4_compoundargs
*argp
, struct nfsd4_remove
*remove
)
988 READ32(remove
->rm_namelen
);
989 READ_BUF(remove
->rm_namelen
);
990 SAVEMEM(remove
->rm_name
, remove
->rm_namelen
);
991 if ((status
= check_filename(remove
->rm_name
, remove
->rm_namelen
)))
998 nfsd4_decode_rename(struct nfsd4_compoundargs
*argp
, struct nfsd4_rename
*rename
)
1003 READ32(rename
->rn_snamelen
);
1004 READ_BUF(rename
->rn_snamelen
+ 4);
1005 SAVEMEM(rename
->rn_sname
, rename
->rn_snamelen
);
1006 READ32(rename
->rn_tnamelen
);
1007 READ_BUF(rename
->rn_tnamelen
);
1008 SAVEMEM(rename
->rn_tname
, rename
->rn_tnamelen
);
1009 if ((status
= check_filename(rename
->rn_sname
, rename
->rn_snamelen
)))
1011 if ((status
= check_filename(rename
->rn_tname
, rename
->rn_tnamelen
)))
1018 nfsd4_decode_renew(struct nfsd4_compoundargs
*argp
, clientid_t
*clientid
)
1022 READ_BUF(sizeof(clientid_t
));
1023 COPYMEM(clientid
, sizeof(clientid_t
));
1029 nfsd4_decode_secinfo(struct nfsd4_compoundargs
*argp
,
1030 struct nfsd4_secinfo
*secinfo
)
1035 READ32(secinfo
->si_namelen
);
1036 READ_BUF(secinfo
->si_namelen
);
1037 SAVEMEM(secinfo
->si_name
, secinfo
->si_namelen
);
1038 status
= check_filename(secinfo
->si_name
, secinfo
->si_namelen
);
1045 nfsd4_decode_secinfo_no_name(struct nfsd4_compoundargs
*argp
,
1046 struct nfsd4_secinfo_no_name
*sin
)
1051 READ32(sin
->sin_style
);
1056 nfsd4_decode_setattr(struct nfsd4_compoundargs
*argp
, struct nfsd4_setattr
*setattr
)
1060 status
= nfsd4_decode_stateid(argp
, &setattr
->sa_stateid
);
1063 return nfsd4_decode_fattr(argp
, setattr
->sa_bmval
, &setattr
->sa_iattr
,
1068 nfsd4_decode_setclientid(struct nfsd4_compoundargs
*argp
, struct nfsd4_setclientid
*setclientid
)
1072 READ_BUF(NFS4_VERIFIER_SIZE
);
1073 COPYMEM(setclientid
->se_verf
.data
, NFS4_VERIFIER_SIZE
);
1075 status
= nfsd4_decode_opaque(argp
, &setclientid
->se_name
);
1077 return nfserr_bad_xdr
;
1079 READ32(setclientid
->se_callback_prog
);
1080 READ32(setclientid
->se_callback_netid_len
);
1082 READ_BUF(setclientid
->se_callback_netid_len
+ 4);
1083 SAVEMEM(setclientid
->se_callback_netid_val
, setclientid
->se_callback_netid_len
);
1084 READ32(setclientid
->se_callback_addr_len
);
1086 READ_BUF(setclientid
->se_callback_addr_len
+ 4);
1087 SAVEMEM(setclientid
->se_callback_addr_val
, setclientid
->se_callback_addr_len
);
1088 READ32(setclientid
->se_callback_ident
);
1094 nfsd4_decode_setclientid_confirm(struct nfsd4_compoundargs
*argp
, struct nfsd4_setclientid_confirm
*scd_c
)
1098 READ_BUF(8 + NFS4_VERIFIER_SIZE
);
1099 COPYMEM(&scd_c
->sc_clientid
, 8);
1100 COPYMEM(&scd_c
->sc_confirm
, NFS4_VERIFIER_SIZE
);
1105 /* Also used for NVERIFY */
1107 nfsd4_decode_verify(struct nfsd4_compoundargs
*argp
, struct nfsd4_verify
*verify
)
1111 if ((status
= nfsd4_decode_bitmap(argp
, verify
->ve_bmval
)))
1114 /* For convenience's sake, we compare raw xdr'd attributes in
1115 * nfsd4_proc_verify */
1118 READ32(verify
->ve_attrlen
);
1119 READ_BUF(verify
->ve_attrlen
);
1120 SAVEMEM(verify
->ve_attrval
, verify
->ve_attrlen
);
1126 nfsd4_decode_write(struct nfsd4_compoundargs
*argp
, struct nfsd4_write
*write
)
1132 status
= nfsd4_decode_stateid(argp
, &write
->wr_stateid
);
1136 READ64(write
->wr_offset
);
1137 READ32(write
->wr_stable_how
);
1138 if (write
->wr_stable_how
> 2)
1140 READ32(write
->wr_buflen
);
1142 /* Sorry .. no magic macros for this.. *
1143 * READ_BUF(write->wr_buflen);
1144 * SAVEMEM(write->wr_buf, write->wr_buflen);
1146 avail
= (char*)argp
->end
- (char*)argp
->p
;
1147 if (avail
+ argp
->pagelen
< write
->wr_buflen
) {
1148 dprintk("NFSD: xdr error (%s:%d)\n",
1149 __FILE__
, __LINE__
);
1152 write
->wr_head
.iov_base
= p
;
1153 write
->wr_head
.iov_len
= avail
;
1154 WARN_ON(avail
!= (XDR_QUADLEN(avail
) << 2));
1155 write
->wr_pagelist
= argp
->pagelist
;
1157 len
= XDR_QUADLEN(write
->wr_buflen
) << 2;
1163 pages
= len
>> PAGE_SHIFT
;
1164 argp
->pagelist
+= pages
;
1165 argp
->pagelen
-= pages
* PAGE_SIZE
;
1166 len
-= pages
* PAGE_SIZE
;
1168 argp
->p
= (__be32
*)page_address(argp
->pagelist
[0]);
1169 argp
->end
= argp
->p
+ XDR_QUADLEN(PAGE_SIZE
);
1171 argp
->p
+= XDR_QUADLEN(len
);
1177 nfsd4_decode_release_lockowner(struct nfsd4_compoundargs
*argp
, struct nfsd4_release_lockowner
*rlockowner
)
1182 COPYMEM(&rlockowner
->rl_clientid
, sizeof(clientid_t
));
1183 READ32(rlockowner
->rl_owner
.len
);
1184 READ_BUF(rlockowner
->rl_owner
.len
);
1185 READMEM(rlockowner
->rl_owner
.data
, rlockowner
->rl_owner
.len
);
1187 if (argp
->minorversion
&& !zero_clientid(&rlockowner
->rl_clientid
))
1188 return nfserr_inval
;
1193 nfsd4_decode_exchange_id(struct nfsd4_compoundargs
*argp
,
1194 struct nfsd4_exchange_id
*exid
)
1199 READ_BUF(NFS4_VERIFIER_SIZE
);
1200 COPYMEM(exid
->verifier
.data
, NFS4_VERIFIER_SIZE
);
1202 status
= nfsd4_decode_opaque(argp
, &exid
->clname
);
1204 return nfserr_bad_xdr
;
1207 READ32(exid
->flags
);
1209 /* Ignore state_protect4_a */
1211 READ32(exid
->spa_how
);
1212 switch (exid
->spa_how
) {
1216 /* spo_must_enforce */
1219 READ_BUF(dummy
* 4);
1222 /* spo_must_allow */
1225 READ_BUF(dummy
* 4);
1232 READ_BUF(dummy
* 4);
1237 READ_BUF(dummy
* 4);
1240 /* ssp_hash_algs<> */
1247 p
+= XDR_QUADLEN(dummy
);
1250 /* ssp_encr_algs<> */
1257 p
+= XDR_QUADLEN(dummy
);
1260 /* ssp_window and ssp_num_gss_handles */
1269 /* Ignore Implementation ID */
1270 READ_BUF(4); /* nfs_impl_id4 array length */
1281 p
+= XDR_QUADLEN(dummy
);
1287 p
+= XDR_QUADLEN(dummy
);
1297 nfsd4_decode_create_session(struct nfsd4_compoundargs
*argp
,
1298 struct nfsd4_create_session
*sess
)
1304 COPYMEM(&sess
->clientid
, 8);
1305 READ32(sess
->seqid
);
1306 READ32(sess
->flags
);
1308 /* Fore channel attrs */
1310 READ32(dummy
); /* headerpadsz is always 0 */
1311 READ32(sess
->fore_channel
.maxreq_sz
);
1312 READ32(sess
->fore_channel
.maxresp_sz
);
1313 READ32(sess
->fore_channel
.maxresp_cached
);
1314 READ32(sess
->fore_channel
.maxops
);
1315 READ32(sess
->fore_channel
.maxreqs
);
1316 READ32(sess
->fore_channel
.nr_rdma_attrs
);
1317 if (sess
->fore_channel
.nr_rdma_attrs
== 1) {
1319 READ32(sess
->fore_channel
.rdma_attrs
);
1320 } else if (sess
->fore_channel
.nr_rdma_attrs
> 1) {
1321 dprintk("Too many fore channel attr bitmaps!\n");
1325 /* Back channel attrs */
1327 READ32(dummy
); /* headerpadsz is always 0 */
1328 READ32(sess
->back_channel
.maxreq_sz
);
1329 READ32(sess
->back_channel
.maxresp_sz
);
1330 READ32(sess
->back_channel
.maxresp_cached
);
1331 READ32(sess
->back_channel
.maxops
);
1332 READ32(sess
->back_channel
.maxreqs
);
1333 READ32(sess
->back_channel
.nr_rdma_attrs
);
1334 if (sess
->back_channel
.nr_rdma_attrs
== 1) {
1336 READ32(sess
->back_channel
.rdma_attrs
);
1337 } else if (sess
->back_channel
.nr_rdma_attrs
> 1) {
1338 dprintk("Too many back channel attr bitmaps!\n");
1343 READ32(sess
->callback_prog
);
1344 nfsd4_decode_cb_sec(argp
, &sess
->cb_sec
);
1349 nfsd4_decode_destroy_session(struct nfsd4_compoundargs
*argp
,
1350 struct nfsd4_destroy_session
*destroy_session
)
1353 READ_BUF(NFS4_MAX_SESSIONID_LEN
);
1354 COPYMEM(destroy_session
->sessionid
.data
, NFS4_MAX_SESSIONID_LEN
);
1360 nfsd4_decode_free_stateid(struct nfsd4_compoundargs
*argp
,
1361 struct nfsd4_free_stateid
*free_stateid
)
1365 READ_BUF(sizeof(stateid_t
));
1366 READ32(free_stateid
->fr_stateid
.si_generation
);
1367 COPYMEM(&free_stateid
->fr_stateid
.si_opaque
, sizeof(stateid_opaque_t
));
1373 nfsd4_decode_sequence(struct nfsd4_compoundargs
*argp
,
1374 struct nfsd4_sequence
*seq
)
1378 READ_BUF(NFS4_MAX_SESSIONID_LEN
+ 16);
1379 COPYMEM(seq
->sessionid
.data
, NFS4_MAX_SESSIONID_LEN
);
1381 READ32(seq
->slotid
);
1382 READ32(seq
->maxslots
);
1383 READ32(seq
->cachethis
);
1389 nfsd4_decode_test_stateid(struct nfsd4_compoundargs
*argp
, struct nfsd4_test_stateid
*test_stateid
)
1393 struct nfsd4_test_stateid_id
*stateid
;
1396 test_stateid
->ts_num_ids
= ntohl(*p
++);
1398 INIT_LIST_HEAD(&test_stateid
->ts_stateid_list
);
1400 for (i
= 0; i
< test_stateid
->ts_num_ids
; i
++) {
1401 stateid
= kmalloc(sizeof(struct nfsd4_test_stateid_id
), GFP_KERNEL
);
1403 status
= nfserrno(-ENOMEM
);
1407 defer_free(argp
, kfree
, stateid
);
1408 INIT_LIST_HEAD(&stateid
->ts_id_list
);
1409 list_add_tail(&stateid
->ts_id_list
, &test_stateid
->ts_stateid_list
);
1411 status
= nfsd4_decode_stateid(argp
, &stateid
->ts_id_stateid
);
1420 dprintk("NFSD: xdr error (%s:%d)\n", __FILE__
, __LINE__
);
1421 status
= nfserr_bad_xdr
;
1425 static __be32
nfsd4_decode_destroy_clientid(struct nfsd4_compoundargs
*argp
, struct nfsd4_destroy_clientid
*dc
)
1430 COPYMEM(&dc
->clientid
, 8);
1435 static __be32
nfsd4_decode_reclaim_complete(struct nfsd4_compoundargs
*argp
, struct nfsd4_reclaim_complete
*rc
)
1440 READ32(rc
->rca_one_fs
);
1446 nfsd4_decode_noop(struct nfsd4_compoundargs
*argp
, void *p
)
1452 nfsd4_decode_notsupp(struct nfsd4_compoundargs
*argp
, void *p
)
1454 return nfserr_notsupp
;
1457 typedef __be32(*nfsd4_dec
)(struct nfsd4_compoundargs
*argp
, void *);
1459 static nfsd4_dec nfsd4_dec_ops
[] = {
1460 [OP_ACCESS
] = (nfsd4_dec
)nfsd4_decode_access
,
1461 [OP_CLOSE
] = (nfsd4_dec
)nfsd4_decode_close
,
1462 [OP_COMMIT
] = (nfsd4_dec
)nfsd4_decode_commit
,
1463 [OP_CREATE
] = (nfsd4_dec
)nfsd4_decode_create
,
1464 [OP_DELEGPURGE
] = (nfsd4_dec
)nfsd4_decode_notsupp
,
1465 [OP_DELEGRETURN
] = (nfsd4_dec
)nfsd4_decode_delegreturn
,
1466 [OP_GETATTR
] = (nfsd4_dec
)nfsd4_decode_getattr
,
1467 [OP_GETFH
] = (nfsd4_dec
)nfsd4_decode_noop
,
1468 [OP_LINK
] = (nfsd4_dec
)nfsd4_decode_link
,
1469 [OP_LOCK
] = (nfsd4_dec
)nfsd4_decode_lock
,
1470 [OP_LOCKT
] = (nfsd4_dec
)nfsd4_decode_lockt
,
1471 [OP_LOCKU
] = (nfsd4_dec
)nfsd4_decode_locku
,
1472 [OP_LOOKUP
] = (nfsd4_dec
)nfsd4_decode_lookup
,
1473 [OP_LOOKUPP
] = (nfsd4_dec
)nfsd4_decode_noop
,
1474 [OP_NVERIFY
] = (nfsd4_dec
)nfsd4_decode_verify
,
1475 [OP_OPEN
] = (nfsd4_dec
)nfsd4_decode_open
,
1476 [OP_OPENATTR
] = (nfsd4_dec
)nfsd4_decode_notsupp
,
1477 [OP_OPEN_CONFIRM
] = (nfsd4_dec
)nfsd4_decode_open_confirm
,
1478 [OP_OPEN_DOWNGRADE
] = (nfsd4_dec
)nfsd4_decode_open_downgrade
,
1479 [OP_PUTFH
] = (nfsd4_dec
)nfsd4_decode_putfh
,
1480 [OP_PUTPUBFH
] = (nfsd4_dec
)nfsd4_decode_noop
,
1481 [OP_PUTROOTFH
] = (nfsd4_dec
)nfsd4_decode_noop
,
1482 [OP_READ
] = (nfsd4_dec
)nfsd4_decode_read
,
1483 [OP_READDIR
] = (nfsd4_dec
)nfsd4_decode_readdir
,
1484 [OP_READLINK
] = (nfsd4_dec
)nfsd4_decode_noop
,
1485 [OP_REMOVE
] = (nfsd4_dec
)nfsd4_decode_remove
,
1486 [OP_RENAME
] = (nfsd4_dec
)nfsd4_decode_rename
,
1487 [OP_RENEW
] = (nfsd4_dec
)nfsd4_decode_renew
,
1488 [OP_RESTOREFH
] = (nfsd4_dec
)nfsd4_decode_noop
,
1489 [OP_SAVEFH
] = (nfsd4_dec
)nfsd4_decode_noop
,
1490 [OP_SECINFO
] = (nfsd4_dec
)nfsd4_decode_secinfo
,
1491 [OP_SETATTR
] = (nfsd4_dec
)nfsd4_decode_setattr
,
1492 [OP_SETCLIENTID
] = (nfsd4_dec
)nfsd4_decode_setclientid
,
1493 [OP_SETCLIENTID_CONFIRM
] = (nfsd4_dec
)nfsd4_decode_setclientid_confirm
,
1494 [OP_VERIFY
] = (nfsd4_dec
)nfsd4_decode_verify
,
1495 [OP_WRITE
] = (nfsd4_dec
)nfsd4_decode_write
,
1496 [OP_RELEASE_LOCKOWNER
] = (nfsd4_dec
)nfsd4_decode_release_lockowner
,
1499 static nfsd4_dec nfsd41_dec_ops
[] = {
1500 [OP_ACCESS
] = (nfsd4_dec
)nfsd4_decode_access
,
1501 [OP_CLOSE
] = (nfsd4_dec
)nfsd4_decode_close
,
1502 [OP_COMMIT
] = (nfsd4_dec
)nfsd4_decode_commit
,
1503 [OP_CREATE
] = (nfsd4_dec
)nfsd4_decode_create
,
1504 [OP_DELEGPURGE
] = (nfsd4_dec
)nfsd4_decode_notsupp
,
1505 [OP_DELEGRETURN
] = (nfsd4_dec
)nfsd4_decode_delegreturn
,
1506 [OP_GETATTR
] = (nfsd4_dec
)nfsd4_decode_getattr
,
1507 [OP_GETFH
] = (nfsd4_dec
)nfsd4_decode_noop
,
1508 [OP_LINK
] = (nfsd4_dec
)nfsd4_decode_link
,
1509 [OP_LOCK
] = (nfsd4_dec
)nfsd4_decode_lock
,
1510 [OP_LOCKT
] = (nfsd4_dec
)nfsd4_decode_lockt
,
1511 [OP_LOCKU
] = (nfsd4_dec
)nfsd4_decode_locku
,
1512 [OP_LOOKUP
] = (nfsd4_dec
)nfsd4_decode_lookup
,
1513 [OP_LOOKUPP
] = (nfsd4_dec
)nfsd4_decode_noop
,
1514 [OP_NVERIFY
] = (nfsd4_dec
)nfsd4_decode_verify
,
1515 [OP_OPEN
] = (nfsd4_dec
)nfsd4_decode_open
,
1516 [OP_OPENATTR
] = (nfsd4_dec
)nfsd4_decode_notsupp
,
1517 [OP_OPEN_CONFIRM
] = (nfsd4_dec
)nfsd4_decode_notsupp
,
1518 [OP_OPEN_DOWNGRADE
] = (nfsd4_dec
)nfsd4_decode_open_downgrade
,
1519 [OP_PUTFH
] = (nfsd4_dec
)nfsd4_decode_putfh
,
1520 [OP_PUTPUBFH
] = (nfsd4_dec
)nfsd4_decode_notsupp
,
1521 [OP_PUTROOTFH
] = (nfsd4_dec
)nfsd4_decode_noop
,
1522 [OP_READ
] = (nfsd4_dec
)nfsd4_decode_read
,
1523 [OP_READDIR
] = (nfsd4_dec
)nfsd4_decode_readdir
,
1524 [OP_READLINK
] = (nfsd4_dec
)nfsd4_decode_noop
,
1525 [OP_REMOVE
] = (nfsd4_dec
)nfsd4_decode_remove
,
1526 [OP_RENAME
] = (nfsd4_dec
)nfsd4_decode_rename
,
1527 [OP_RENEW
] = (nfsd4_dec
)nfsd4_decode_notsupp
,
1528 [OP_RESTOREFH
] = (nfsd4_dec
)nfsd4_decode_noop
,
1529 [OP_SAVEFH
] = (nfsd4_dec
)nfsd4_decode_noop
,
1530 [OP_SECINFO
] = (nfsd4_dec
)nfsd4_decode_secinfo
,
1531 [OP_SETATTR
] = (nfsd4_dec
)nfsd4_decode_setattr
,
1532 [OP_SETCLIENTID
] = (nfsd4_dec
)nfsd4_decode_notsupp
,
1533 [OP_SETCLIENTID_CONFIRM
]= (nfsd4_dec
)nfsd4_decode_notsupp
,
1534 [OP_VERIFY
] = (nfsd4_dec
)nfsd4_decode_verify
,
1535 [OP_WRITE
] = (nfsd4_dec
)nfsd4_decode_write
,
1536 [OP_RELEASE_LOCKOWNER
] = (nfsd4_dec
)nfsd4_decode_notsupp
,
1538 /* new operations for NFSv4.1 */
1539 [OP_BACKCHANNEL_CTL
] = (nfsd4_dec
)nfsd4_decode_backchannel_ctl
,
1540 [OP_BIND_CONN_TO_SESSION
]= (nfsd4_dec
)nfsd4_decode_bind_conn_to_session
,
1541 [OP_EXCHANGE_ID
] = (nfsd4_dec
)nfsd4_decode_exchange_id
,
1542 [OP_CREATE_SESSION
] = (nfsd4_dec
)nfsd4_decode_create_session
,
1543 [OP_DESTROY_SESSION
] = (nfsd4_dec
)nfsd4_decode_destroy_session
,
1544 [OP_FREE_STATEID
] = (nfsd4_dec
)nfsd4_decode_free_stateid
,
1545 [OP_GET_DIR_DELEGATION
] = (nfsd4_dec
)nfsd4_decode_notsupp
,
1546 [OP_GETDEVICEINFO
] = (nfsd4_dec
)nfsd4_decode_notsupp
,
1547 [OP_GETDEVICELIST
] = (nfsd4_dec
)nfsd4_decode_notsupp
,
1548 [OP_LAYOUTCOMMIT
] = (nfsd4_dec
)nfsd4_decode_notsupp
,
1549 [OP_LAYOUTGET
] = (nfsd4_dec
)nfsd4_decode_notsupp
,
1550 [OP_LAYOUTRETURN
] = (nfsd4_dec
)nfsd4_decode_notsupp
,
1551 [OP_SECINFO_NO_NAME
] = (nfsd4_dec
)nfsd4_decode_secinfo_no_name
,
1552 [OP_SEQUENCE
] = (nfsd4_dec
)nfsd4_decode_sequence
,
1553 [OP_SET_SSV
] = (nfsd4_dec
)nfsd4_decode_notsupp
,
1554 [OP_TEST_STATEID
] = (nfsd4_dec
)nfsd4_decode_test_stateid
,
1555 [OP_WANT_DELEGATION
] = (nfsd4_dec
)nfsd4_decode_notsupp
,
1556 [OP_DESTROY_CLIENTID
] = (nfsd4_dec
)nfsd4_decode_destroy_clientid
,
1557 [OP_RECLAIM_COMPLETE
] = (nfsd4_dec
)nfsd4_decode_reclaim_complete
,
1560 struct nfsd4_minorversion_ops
{
1561 nfsd4_dec
*decoders
;
1565 static struct nfsd4_minorversion_ops nfsd4_minorversion
[] = {
1566 [0] = { nfsd4_dec_ops
, ARRAY_SIZE(nfsd4_dec_ops
) },
1567 [1] = { nfsd41_dec_ops
, ARRAY_SIZE(nfsd41_dec_ops
) },
1571 nfsd4_decode_compound(struct nfsd4_compoundargs
*argp
)
1574 struct nfsd4_op
*op
;
1575 struct nfsd4_minorversion_ops
*ops
;
1576 bool cachethis
= false;
1580 READ32(argp
->taglen
);
1581 READ_BUF(argp
->taglen
+ 8);
1582 SAVEMEM(argp
->tag
, argp
->taglen
);
1583 READ32(argp
->minorversion
);
1584 READ32(argp
->opcnt
);
1586 if (argp
->taglen
> NFSD4_MAX_TAGLEN
)
1588 if (argp
->opcnt
> 100)
1591 if (argp
->opcnt
> ARRAY_SIZE(argp
->iops
)) {
1592 argp
->ops
= kmalloc(argp
->opcnt
* sizeof(*argp
->ops
), GFP_KERNEL
);
1594 argp
->ops
= argp
->iops
;
1595 dprintk("nfsd: couldn't allocate room for COMPOUND\n");
1600 if (argp
->minorversion
>= ARRAY_SIZE(nfsd4_minorversion
))
1603 ops
= &nfsd4_minorversion
[argp
->minorversion
];
1604 for (i
= 0; i
< argp
->opcnt
; i
++) {
1611 if (op
->opnum
>= FIRST_NFS4_OP
&& op
->opnum
<= LAST_NFS4_OP
)
1612 op
->status
= ops
->decoders
[op
->opnum
](argp
, &op
->u
);
1614 op
->opnum
= OP_ILLEGAL
;
1615 op
->status
= nfserr_op_illegal
;
1623 * We'll try to cache the result in the DRC if any one
1624 * op in the compound wants to be cached:
1626 cachethis
|= nfsd4_cache_this_op(op
);
1628 /* Sessions make the DRC unnecessary: */
1629 if (argp
->minorversion
)
1631 argp
->rqstp
->rq_cachetype
= cachethis
? RC_REPLBUFF
: RC_NOCACHE
;
1636 #define WRITE32(n) *p++ = htonl(n)
1637 #define WRITE64(n) do { \
1638 *p++ = htonl((u32)((n) >> 32)); \
1639 *p++ = htonl((u32)(n)); \
1641 #define WRITEMEM(ptr,nbytes) do { if (nbytes > 0) { \
1642 *(p + XDR_QUADLEN(nbytes) -1) = 0; \
1643 memcpy(p, ptr, nbytes); \
1644 p += XDR_QUADLEN(nbytes); \
1647 static void write32(__be32
**p
, u32 n
)
1652 static void write64(__be32
**p
, u64 n
)
1654 write32(p
, (n
>> 32));
1658 static void write_change(__be32
**p
, struct kstat
*stat
, struct inode
*inode
)
1660 if (IS_I_VERSION(inode
)) {
1661 write64(p
, inode
->i_version
);
1663 write32(p
, stat
->ctime
.tv_sec
);
1664 write32(p
, stat
->ctime
.tv_nsec
);
1668 static void write_cinfo(__be32
**p
, struct nfsd4_change_info
*c
)
1670 write32(p
, c
->atomic
);
1671 if (c
->change_supported
) {
1672 write64(p
, c
->before_change
);
1673 write64(p
, c
->after_change
);
1675 write32(p
, c
->before_ctime_sec
);
1676 write32(p
, c
->before_ctime_nsec
);
1677 write32(p
, c
->after_ctime_sec
);
1678 write32(p
, c
->after_ctime_nsec
);
1682 #define RESERVE_SPACE(nbytes) do { \
1684 BUG_ON(p + XDR_QUADLEN(nbytes) > resp->end); \
1686 #define ADJUST_ARGS() resp->p = p
1689 * Header routine to setup seqid operation replay cache
1691 #define ENCODE_SEQID_OP_HEAD \
1697 * Routine for encoding the result of a "seqid-mutating" NFSv4 operation. This
1698 * is where sequence id's are incremented, and the replay cache is filled.
1699 * Note that we increment sequence id's here, at the last moment, so we're sure
1700 * we know whether the error to be returned is a sequence id mutating error.
1703 static void encode_seqid_op_tail(struct nfsd4_compoundres
*resp
, __be32
*save
, __be32 nfserr
)
1705 struct nfs4_stateowner
*stateowner
= resp
->cstate
.replay_owner
;
1707 if (seqid_mutating_err(ntohl(nfserr
)) && stateowner
) {
1708 stateowner
->so_seqid
++;
1709 stateowner
->so_replay
.rp_status
= nfserr
;
1710 stateowner
->so_replay
.rp_buflen
=
1711 (char *)resp
->p
- (char *)save
;
1712 memcpy(stateowner
->so_replay
.rp_buf
, save
,
1713 stateowner
->so_replay
.rp_buflen
);
1714 nfsd4_purge_closed_stateid(stateowner
);
1718 /* Encode as an array of strings the string given with components
1719 * separated @sep, escaped with esc_enter and esc_exit.
1721 static __be32
nfsd4_encode_components_esc(char sep
, char *components
,
1722 __be32
**pp
, int *buflen
,
1723 char esc_enter
, char esc_exit
)
1727 int strlen
, count
=0;
1728 char *str
, *end
, *next
;
1730 dprintk("nfsd4_encode_components(%s)\n", components
);
1731 if ((*buflen
-= 4) < 0)
1732 return nfserr_resource
;
1733 WRITE32(0); /* We will fill this in with @count later */
1734 end
= str
= components
;
1736 bool found_esc
= false;
1738 /* try to parse as esc_start, ..., esc_end, sep */
1739 if (*str
== esc_enter
) {
1740 for (; *end
&& (*end
!= esc_exit
); end
++)
1741 /* find esc_exit or end of string */;
1743 if (*end
&& (!*next
|| *next
== sep
)) {
1750 for (; *end
&& (*end
!= sep
); end
++)
1751 /* find sep or end of string */;
1755 if ((*buflen
-= ((XDR_QUADLEN(strlen
) << 2) + 4)) < 0)
1756 return nfserr_resource
;
1758 WRITEMEM(str
, strlen
);
1771 /* Encode as an array of strings the string given with components
1774 static __be32
nfsd4_encode_components(char sep
, char *components
,
1775 __be32
**pp
, int *buflen
)
1777 return nfsd4_encode_components_esc(sep
, components
, pp
, buflen
, 0, 0);
1781 * encode a location element of a fs_locations structure
1783 static __be32
nfsd4_encode_fs_location4(struct nfsd4_fs_location
*location
,
1784 __be32
**pp
, int *buflen
)
1789 status
= nfsd4_encode_components_esc(':', location
->hosts
, &p
, buflen
,
1793 status
= nfsd4_encode_components('/', location
->path
, &p
, buflen
);
1801 * Encode a path in RFC3530 'pathname4' format
1803 static __be32
nfsd4_encode_path(const struct path
*root
,
1804 const struct path
*path
, __be32
**pp
, int *buflen
)
1808 .dentry
= path
->dentry
,
1811 struct dentry
**components
= NULL
;
1812 unsigned int ncomponents
= 0;
1813 __be32 err
= nfserr_jukebox
;
1815 dprintk("nfsd4_encode_components(");
1818 /* First walk the path up to the nfsd root, and store the
1819 * dentries/path components in an array.
1822 if (cur
.dentry
== root
->dentry
&& cur
.mnt
== root
->mnt
)
1824 if (cur
.dentry
== cur
.mnt
->mnt_root
) {
1825 if (follow_up(&cur
))
1829 if ((ncomponents
& 15) == 0) {
1830 struct dentry
**new;
1831 new = krealloc(components
,
1832 sizeof(*new) * (ncomponents
+ 16),
1838 components
[ncomponents
++] = cur
.dentry
;
1839 cur
.dentry
= dget_parent(cur
.dentry
);
1845 WRITE32(ncomponents
);
1847 while (ncomponents
) {
1848 struct dentry
*dentry
= components
[ncomponents
- 1];
1849 unsigned int len
= dentry
->d_name
.len
;
1851 *buflen
-= 4 + (XDR_QUADLEN(len
) << 2);
1855 WRITEMEM(dentry
->d_name
.name
, len
);
1856 dprintk("/%s", dentry
->d_name
.name
);
1866 dput(components
[--ncomponents
]);
1872 static __be32
nfsd4_encode_fsloc_fsroot(struct svc_rqst
*rqstp
,
1873 const struct path
*path
, __be32
**pp
, int *buflen
)
1875 struct svc_export
*exp_ps
;
1878 exp_ps
= rqst_find_fsidzero_export(rqstp
);
1880 return nfserrno(PTR_ERR(exp_ps
));
1881 res
= nfsd4_encode_path(&exp_ps
->ex_path
, path
, pp
, buflen
);
1887 * encode a fs_locations structure
1889 static __be32
nfsd4_encode_fs_locations(struct svc_rqst
*rqstp
,
1890 struct svc_export
*exp
,
1891 __be32
**pp
, int *buflen
)
1896 struct nfsd4_fs_locations
*fslocs
= &exp
->ex_fslocs
;
1898 status
= nfsd4_encode_fsloc_fsroot(rqstp
, &exp
->ex_path
, &p
, buflen
);
1901 if ((*buflen
-= 4) < 0)
1902 return nfserr_resource
;
1903 WRITE32(fslocs
->locations_count
);
1904 for (i
=0; i
<fslocs
->locations_count
; i
++) {
1905 status
= nfsd4_encode_fs_location4(&fslocs
->locations
[i
],
1914 static u32
nfs4_file_type(umode_t mode
)
1916 switch (mode
& S_IFMT
) {
1917 case S_IFIFO
: return NF4FIFO
;
1918 case S_IFCHR
: return NF4CHR
;
1919 case S_IFDIR
: return NF4DIR
;
1920 case S_IFBLK
: return NF4BLK
;
1921 case S_IFLNK
: return NF4LNK
;
1922 case S_IFREG
: return NF4REG
;
1923 case S_IFSOCK
: return NF4SOCK
;
1924 default: return NF4BAD
;
1929 nfsd4_encode_name(struct svc_rqst
*rqstp
, int whotype
, uid_t id
, int group
,
1930 __be32
**p
, int *buflen
)
1934 if (*buflen
< (XDR_QUADLEN(IDMAP_NAMESZ
) << 2) + 4)
1935 return nfserr_resource
;
1936 if (whotype
!= NFS4_ACL_WHO_NAMED
)
1937 status
= nfs4_acl_write_who(whotype
, (u8
*)(*p
+ 1));
1939 status
= nfsd_map_gid_to_name(rqstp
, id
, (u8
*)(*p
+ 1));
1941 status
= nfsd_map_uid_to_name(rqstp
, id
, (u8
*)(*p
+ 1));
1943 return nfserrno(status
);
1944 *p
= xdr_encode_opaque(*p
, NULL
, status
);
1945 *buflen
-= (XDR_QUADLEN(status
) << 2) + 4;
1946 BUG_ON(*buflen
< 0);
1950 static inline __be32
1951 nfsd4_encode_user(struct svc_rqst
*rqstp
, uid_t uid
, __be32
**p
, int *buflen
)
1953 return nfsd4_encode_name(rqstp
, NFS4_ACL_WHO_NAMED
, uid
, 0, p
, buflen
);
1956 static inline __be32
1957 nfsd4_encode_group(struct svc_rqst
*rqstp
, uid_t gid
, __be32
**p
, int *buflen
)
1959 return nfsd4_encode_name(rqstp
, NFS4_ACL_WHO_NAMED
, gid
, 1, p
, buflen
);
1962 static inline __be32
1963 nfsd4_encode_aclname(struct svc_rqst
*rqstp
, int whotype
, uid_t id
, int group
,
1964 __be32
**p
, int *buflen
)
1966 return nfsd4_encode_name(rqstp
, whotype
, id
, group
, p
, buflen
);
1969 #define WORD0_ABSENT_FS_ATTRS (FATTR4_WORD0_FS_LOCATIONS | FATTR4_WORD0_FSID | \
1970 FATTR4_WORD0_RDATTR_ERROR)
1971 #define WORD1_ABSENT_FS_ATTRS FATTR4_WORD1_MOUNTED_ON_FILEID
1973 static __be32
fattr_handle_absent_fs(u32
*bmval0
, u32
*bmval1
, u32
*rdattr_err
)
1975 /* As per referral draft: */
1976 if (*bmval0
& ~WORD0_ABSENT_FS_ATTRS
||
1977 *bmval1
& ~WORD1_ABSENT_FS_ATTRS
) {
1978 if (*bmval0
& FATTR4_WORD0_RDATTR_ERROR
||
1979 *bmval0
& FATTR4_WORD0_FS_LOCATIONS
)
1980 *rdattr_err
= NFSERR_MOVED
;
1982 return nfserr_moved
;
1984 *bmval0
&= WORD0_ABSENT_FS_ATTRS
;
1985 *bmval1
&= WORD1_ABSENT_FS_ATTRS
;
1990 static int get_parent_attributes(struct svc_export
*exp
, struct kstat
*stat
)
1992 struct path path
= exp
->ex_path
;
1996 while (follow_up(&path
)) {
1997 if (path
.dentry
!= path
.mnt
->mnt_root
)
2000 err
= vfs_getattr(&path
, stat
);
2006 * Note: @fhp can be NULL; in this case, we might have to compose the filehandle
2009 * @countp is the buffer size in _words_; upon successful return this becomes
2010 * replaced with the number of words written.
2013 nfsd4_encode_fattr(struct svc_fh
*fhp
, struct svc_export
*exp
,
2014 struct dentry
*dentry
, __be32
*buffer
, int *countp
, u32
*bmval
,
2015 struct svc_rqst
*rqstp
, int ignore_crossmnt
)
2017 u32 bmval0
= bmval
[0];
2018 u32 bmval1
= bmval
[1];
2019 u32 bmval2
= bmval
[2];
2021 struct svc_fh tempfh
;
2022 struct kstatfs statfs
;
2023 int buflen
= *countp
<< 2;
2032 struct nfs4_acl
*acl
= NULL
;
2033 struct nfsd4_compoundres
*resp
= rqstp
->rq_resp
;
2034 u32 minorversion
= resp
->cstate
.minorversion
;
2035 struct path path
= {
2036 .mnt
= exp
->ex_path
.mnt
,
2039 struct nfsd_net
*nn
= net_generic(SVC_NET(rqstp
), nfsd_net_id
);
2041 BUG_ON(bmval1
& NFSD_WRITEONLY_ATTRS_WORD1
);
2042 BUG_ON(bmval0
& ~nfsd_suppattrs0(minorversion
));
2043 BUG_ON(bmval1
& ~nfsd_suppattrs1(minorversion
));
2044 BUG_ON(bmval2
& ~nfsd_suppattrs2(minorversion
));
2046 if (exp
->ex_fslocs
.migrated
) {
2048 status
= fattr_handle_absent_fs(&bmval0
, &bmval1
, &rdattr_err
);
2053 err
= vfs_getattr(&path
, &stat
);
2056 if ((bmval0
& (FATTR4_WORD0_FILES_FREE
| FATTR4_WORD0_FILES_TOTAL
|
2057 FATTR4_WORD0_MAXNAME
)) ||
2058 (bmval1
& (FATTR4_WORD1_SPACE_AVAIL
| FATTR4_WORD1_SPACE_FREE
|
2059 FATTR4_WORD1_SPACE_TOTAL
))) {
2060 err
= vfs_statfs(&path
, &statfs
);
2064 if ((bmval0
& (FATTR4_WORD0_FILEHANDLE
| FATTR4_WORD0_FSID
)) && !fhp
) {
2065 fh_init(&tempfh
, NFS4_FHSIZE
);
2066 status
= fh_compose(&tempfh
, exp
, dentry
, NULL
);
2071 if (bmval0
& (FATTR4_WORD0_ACL
| FATTR4_WORD0_ACLSUPPORT
2072 | FATTR4_WORD0_SUPPORTED_ATTRS
)) {
2073 err
= nfsd4_get_nfs4_acl(rqstp
, dentry
, &acl
);
2074 aclsupport
= (err
== 0);
2075 if (bmval0
& FATTR4_WORD0_ACL
) {
2076 if (err
== -EOPNOTSUPP
)
2077 bmval0
&= ~FATTR4_WORD0_ACL
;
2078 else if (err
== -EINVAL
) {
2079 status
= nfserr_attrnotsupp
;
2081 } else if (err
!= 0)
2087 if ((buflen
-= 16) < 0)
2093 } else if (bmval1
) {
2094 if ((buflen
-= 12) < 0)
2100 if ((buflen
-= 8) < 0)
2105 attrlenp
= p
++; /* to be backfilled later */
2107 if (bmval0
& FATTR4_WORD0_SUPPORTED_ATTRS
) {
2108 u32 word0
= nfsd_suppattrs0(minorversion
);
2109 u32 word1
= nfsd_suppattrs1(minorversion
);
2110 u32 word2
= nfsd_suppattrs2(minorversion
);
2113 word0
&= ~FATTR4_WORD0_ACL
;
2115 if ((buflen
-= 12) < 0)
2121 if ((buflen
-= 16) < 0)
2129 if (bmval0
& FATTR4_WORD0_TYPE
) {
2130 if ((buflen
-= 4) < 0)
2132 dummy
= nfs4_file_type(stat
.mode
);
2133 if (dummy
== NF4BAD
)
2134 goto out_serverfault
;
2137 if (bmval0
& FATTR4_WORD0_FH_EXPIRE_TYPE
) {
2138 if ((buflen
-= 4) < 0)
2140 if (exp
->ex_flags
& NFSEXP_NOSUBTREECHECK
)
2141 WRITE32(NFS4_FH_PERSISTENT
);
2143 WRITE32(NFS4_FH_PERSISTENT
|NFS4_FH_VOL_RENAME
);
2145 if (bmval0
& FATTR4_WORD0_CHANGE
) {
2146 if ((buflen
-= 8) < 0)
2148 write_change(&p
, &stat
, dentry
->d_inode
);
2150 if (bmval0
& FATTR4_WORD0_SIZE
) {
2151 if ((buflen
-= 8) < 0)
2155 if (bmval0
& FATTR4_WORD0_LINK_SUPPORT
) {
2156 if ((buflen
-= 4) < 0)
2160 if (bmval0
& FATTR4_WORD0_SYMLINK_SUPPORT
) {
2161 if ((buflen
-= 4) < 0)
2165 if (bmval0
& FATTR4_WORD0_NAMED_ATTR
) {
2166 if ((buflen
-= 4) < 0)
2170 if (bmval0
& FATTR4_WORD0_FSID
) {
2171 if ((buflen
-= 16) < 0)
2173 if (exp
->ex_fslocs
.migrated
) {
2174 WRITE64(NFS4_REFERRAL_FSID_MAJOR
);
2175 WRITE64(NFS4_REFERRAL_FSID_MINOR
);
2176 } else switch(fsid_source(fhp
)) {
2177 case FSIDSOURCE_FSID
:
2178 WRITE64((u64
)exp
->ex_fsid
);
2181 case FSIDSOURCE_DEV
:
2183 WRITE32(MAJOR(stat
.dev
));
2185 WRITE32(MINOR(stat
.dev
));
2187 case FSIDSOURCE_UUID
:
2188 WRITEMEM(exp
->ex_uuid
, 16);
2192 if (bmval0
& FATTR4_WORD0_UNIQUE_HANDLES
) {
2193 if ((buflen
-= 4) < 0)
2197 if (bmval0
& FATTR4_WORD0_LEASE_TIME
) {
2198 if ((buflen
-= 4) < 0)
2200 WRITE32(nn
->nfsd4_lease
);
2202 if (bmval0
& FATTR4_WORD0_RDATTR_ERROR
) {
2203 if ((buflen
-= 4) < 0)
2205 WRITE32(rdattr_err
);
2207 if (bmval0
& FATTR4_WORD0_ACL
) {
2208 struct nfs4_ace
*ace
;
2211 if ((buflen
-= 4) < 0)
2217 if ((buflen
-= 4) < 0)
2219 WRITE32(acl
->naces
);
2221 for (ace
= acl
->aces
; ace
< acl
->aces
+ acl
->naces
; ace
++) {
2222 if ((buflen
-= 4*3) < 0)
2226 WRITE32(ace
->access_mask
& NFS4_ACE_MASK_ALL
);
2227 status
= nfsd4_encode_aclname(rqstp
, ace
->whotype
,
2228 ace
->who
, ace
->flag
& NFS4_ACE_IDENTIFIER_GROUP
,
2230 if (status
== nfserr_resource
)
2237 if (bmval0
& FATTR4_WORD0_ACLSUPPORT
) {
2238 if ((buflen
-= 4) < 0)
2240 WRITE32(aclsupport
?
2241 ACL4_SUPPORT_ALLOW_ACL
|ACL4_SUPPORT_DENY_ACL
: 0);
2243 if (bmval0
& FATTR4_WORD0_CANSETTIME
) {
2244 if ((buflen
-= 4) < 0)
2248 if (bmval0
& FATTR4_WORD0_CASE_INSENSITIVE
) {
2249 if ((buflen
-= 4) < 0)
2253 if (bmval0
& FATTR4_WORD0_CASE_PRESERVING
) {
2254 if ((buflen
-= 4) < 0)
2258 if (bmval0
& FATTR4_WORD0_CHOWN_RESTRICTED
) {
2259 if ((buflen
-= 4) < 0)
2263 if (bmval0
& FATTR4_WORD0_FILEHANDLE
) {
2264 buflen
-= (XDR_QUADLEN(fhp
->fh_handle
.fh_size
) << 2) + 4;
2267 WRITE32(fhp
->fh_handle
.fh_size
);
2268 WRITEMEM(&fhp
->fh_handle
.fh_base
, fhp
->fh_handle
.fh_size
);
2270 if (bmval0
& FATTR4_WORD0_FILEID
) {
2271 if ((buflen
-= 8) < 0)
2275 if (bmval0
& FATTR4_WORD0_FILES_AVAIL
) {
2276 if ((buflen
-= 8) < 0)
2278 WRITE64((u64
) statfs
.f_ffree
);
2280 if (bmval0
& FATTR4_WORD0_FILES_FREE
) {
2281 if ((buflen
-= 8) < 0)
2283 WRITE64((u64
) statfs
.f_ffree
);
2285 if (bmval0
& FATTR4_WORD0_FILES_TOTAL
) {
2286 if ((buflen
-= 8) < 0)
2288 WRITE64((u64
) statfs
.f_files
);
2290 if (bmval0
& FATTR4_WORD0_FS_LOCATIONS
) {
2291 status
= nfsd4_encode_fs_locations(rqstp
, exp
, &p
, &buflen
);
2292 if (status
== nfserr_resource
)
2297 if (bmval0
& FATTR4_WORD0_HOMOGENEOUS
) {
2298 if ((buflen
-= 4) < 0)
2302 if (bmval0
& FATTR4_WORD0_MAXFILESIZE
) {
2303 if ((buflen
-= 8) < 0)
2307 if (bmval0
& FATTR4_WORD0_MAXLINK
) {
2308 if ((buflen
-= 4) < 0)
2312 if (bmval0
& FATTR4_WORD0_MAXNAME
) {
2313 if ((buflen
-= 4) < 0)
2315 WRITE32(statfs
.f_namelen
);
2317 if (bmval0
& FATTR4_WORD0_MAXREAD
) {
2318 if ((buflen
-= 8) < 0)
2320 WRITE64((u64
) svc_max_payload(rqstp
));
2322 if (bmval0
& FATTR4_WORD0_MAXWRITE
) {
2323 if ((buflen
-= 8) < 0)
2325 WRITE64((u64
) svc_max_payload(rqstp
));
2327 if (bmval1
& FATTR4_WORD1_MODE
) {
2328 if ((buflen
-= 4) < 0)
2330 WRITE32(stat
.mode
& S_IALLUGO
);
2332 if (bmval1
& FATTR4_WORD1_NO_TRUNC
) {
2333 if ((buflen
-= 4) < 0)
2337 if (bmval1
& FATTR4_WORD1_NUMLINKS
) {
2338 if ((buflen
-= 4) < 0)
2340 WRITE32(stat
.nlink
);
2342 if (bmval1
& FATTR4_WORD1_OWNER
) {
2343 status
= nfsd4_encode_user(rqstp
, stat
.uid
, &p
, &buflen
);
2344 if (status
== nfserr_resource
)
2349 if (bmval1
& FATTR4_WORD1_OWNER_GROUP
) {
2350 status
= nfsd4_encode_group(rqstp
, stat
.gid
, &p
, &buflen
);
2351 if (status
== nfserr_resource
)
2356 if (bmval1
& FATTR4_WORD1_RAWDEV
) {
2357 if ((buflen
-= 8) < 0)
2359 WRITE32((u32
) MAJOR(stat
.rdev
));
2360 WRITE32((u32
) MINOR(stat
.rdev
));
2362 if (bmval1
& FATTR4_WORD1_SPACE_AVAIL
) {
2363 if ((buflen
-= 8) < 0)
2365 dummy64
= (u64
)statfs
.f_bavail
* (u64
)statfs
.f_bsize
;
2368 if (bmval1
& FATTR4_WORD1_SPACE_FREE
) {
2369 if ((buflen
-= 8) < 0)
2371 dummy64
= (u64
)statfs
.f_bfree
* (u64
)statfs
.f_bsize
;
2374 if (bmval1
& FATTR4_WORD1_SPACE_TOTAL
) {
2375 if ((buflen
-= 8) < 0)
2377 dummy64
= (u64
)statfs
.f_blocks
* (u64
)statfs
.f_bsize
;
2380 if (bmval1
& FATTR4_WORD1_SPACE_USED
) {
2381 if ((buflen
-= 8) < 0)
2383 dummy64
= (u64
)stat
.blocks
<< 9;
2386 if (bmval1
& FATTR4_WORD1_TIME_ACCESS
) {
2387 if ((buflen
-= 12) < 0)
2390 WRITE32(stat
.atime
.tv_sec
);
2391 WRITE32(stat
.atime
.tv_nsec
);
2393 if (bmval1
& FATTR4_WORD1_TIME_DELTA
) {
2394 if ((buflen
-= 12) < 0)
2400 if (bmval1
& FATTR4_WORD1_TIME_METADATA
) {
2401 if ((buflen
-= 12) < 0)
2404 WRITE32(stat
.ctime
.tv_sec
);
2405 WRITE32(stat
.ctime
.tv_nsec
);
2407 if (bmval1
& FATTR4_WORD1_TIME_MODIFY
) {
2408 if ((buflen
-= 12) < 0)
2411 WRITE32(stat
.mtime
.tv_sec
);
2412 WRITE32(stat
.mtime
.tv_nsec
);
2414 if (bmval1
& FATTR4_WORD1_MOUNTED_ON_FILEID
) {
2415 if ((buflen
-= 8) < 0)
2418 * Get parent's attributes if not ignoring crossmount
2419 * and this is the root of a cross-mounted filesystem.
2421 if (ignore_crossmnt
== 0 &&
2422 dentry
== exp
->ex_path
.mnt
->mnt_root
)
2423 get_parent_attributes(exp
, &stat
);
2426 if (bmval2
& FATTR4_WORD2_SUPPATTR_EXCLCREAT
) {
2428 WRITE32(NFSD_SUPPATTR_EXCLCREAT_WORD0
);
2429 WRITE32(NFSD_SUPPATTR_EXCLCREAT_WORD1
);
2430 WRITE32(NFSD_SUPPATTR_EXCLCREAT_WORD2
);
2433 *attrlenp
= htonl((char *)p
- (char *)attrlenp
- 4);
2434 *countp
= p
- buffer
;
2443 status
= nfserrno(err
);
2447 status
= nfserr_resource
;
2450 status
= nfserr_serverfault
;
2454 static inline int attributes_need_mount(u32
*bmval
)
2456 if (bmval
[0] & ~(FATTR4_WORD0_RDATTR_ERROR
| FATTR4_WORD0_LEASE_TIME
))
2458 if (bmval
[1] & ~FATTR4_WORD1_MOUNTED_ON_FILEID
)
2464 nfsd4_encode_dirent_fattr(struct nfsd4_readdir
*cd
,
2465 const char *name
, int namlen
, __be32
*p
, int *buflen
)
2467 struct svc_export
*exp
= cd
->rd_fhp
->fh_export
;
2468 struct dentry
*dentry
;
2470 int ignore_crossmnt
= 0;
2472 dentry
= lookup_one_len(name
, cd
->rd_fhp
->fh_dentry
, namlen
);
2474 return nfserrno(PTR_ERR(dentry
));
2475 if (!dentry
->d_inode
) {
2477 * nfsd_buffered_readdir drops the i_mutex between
2478 * readdir and calling this callback, leaving a window
2479 * where this directory entry could have gone away.
2482 return nfserr_noent
;
2487 * In the case of a mountpoint, the client may be asking for
2488 * attributes that are only properties of the underlying filesystem
2489 * as opposed to the cross-mounted file system. In such a case,
2490 * we will not follow the cross mount and will fill the attribtutes
2491 * directly from the mountpoint dentry.
2493 if (nfsd_mountpoint(dentry
, exp
)) {
2496 if (!(exp
->ex_flags
& NFSEXP_V4ROOT
)
2497 && !attributes_need_mount(cd
->rd_bmval
)) {
2498 ignore_crossmnt
= 1;
2502 * Why the heck aren't we just using nfsd_lookup??
2503 * Different "."/".." handling? Something else?
2504 * At least, add a comment here to explain....
2506 err
= nfsd_cross_mnt(cd
->rd_rqstp
, &dentry
, &exp
);
2508 nfserr
= nfserrno(err
);
2511 nfserr
= check_nfsd_access(exp
, cd
->rd_rqstp
);
2517 nfserr
= nfsd4_encode_fattr(NULL
, exp
, dentry
, p
, buflen
, cd
->rd_bmval
,
2518 cd
->rd_rqstp
, ignore_crossmnt
);
2526 nfsd4_encode_rdattr_error(__be32
*p
, int buflen
, __be32 nfserr
)
2533 *p
++ = htonl(FATTR4_WORD0_RDATTR_ERROR
); /* bmval0 */
2534 *p
++ = htonl(0); /* bmval1 */
2537 *p
++ = nfserr
; /* no htonl */
2538 *attrlenp
= htonl((char *)p
- (char *)attrlenp
- 4);
2543 nfsd4_encode_dirent(void *ccdv
, const char *name
, int namlen
,
2544 loff_t offset
, u64 ino
, unsigned int d_type
)
2546 struct readdir_cd
*ccd
= ccdv
;
2547 struct nfsd4_readdir
*cd
= container_of(ccd
, struct nfsd4_readdir
, common
);
2549 __be32
*p
= cd
->buffer
;
2551 __be32 nfserr
= nfserr_toosmall
;
2553 /* In nfsv4, "." and ".." never make it onto the wire.. */
2554 if (name
&& isdotent(name
, namlen
)) {
2555 cd
->common
.err
= nfs_ok
;
2560 xdr_encode_hyper(cd
->offset
, (u64
) offset
);
2562 buflen
= cd
->buflen
- 4 - XDR_QUADLEN(namlen
);
2566 *p
++ = xdr_one
; /* mark entry present */
2568 p
= xdr_encode_hyper(p
, NFS_OFFSET_MAX
); /* offset of next entry */
2569 p
= xdr_encode_array(p
, name
, namlen
); /* name length & name */
2571 nfserr
= nfsd4_encode_dirent_fattr(cd
, name
, namlen
, p
, &buflen
);
2576 case nfserr_resource
:
2577 nfserr
= nfserr_toosmall
;
2583 * If the client requested the RDATTR_ERROR attribute,
2584 * we stuff the error code into this attribute
2585 * and continue. If this attribute was not requested,
2586 * then in accordance with the spec, we fail the
2587 * entire READDIR operation(!)
2589 if (!(cd
->rd_bmval
[0] & FATTR4_WORD0_RDATTR_ERROR
))
2591 p
= nfsd4_encode_rdattr_error(p
, buflen
, nfserr
);
2593 nfserr
= nfserr_toosmall
;
2597 cd
->buflen
-= (p
- cd
->buffer
);
2599 cd
->offset
= cookiep
;
2601 cd
->common
.err
= nfs_ok
;
2604 cd
->common
.err
= nfserr
;
2609 nfsd4_encode_stateid(struct nfsd4_compoundres
*resp
, stateid_t
*sid
)
2613 RESERVE_SPACE(sizeof(stateid_t
));
2614 WRITE32(sid
->si_generation
);
2615 WRITEMEM(&sid
->si_opaque
, sizeof(stateid_opaque_t
));
2620 nfsd4_encode_access(struct nfsd4_compoundres
*resp
, __be32 nfserr
, struct nfsd4_access
*access
)
2626 WRITE32(access
->ac_supported
);
2627 WRITE32(access
->ac_resp_access
);
2633 static __be32
nfsd4_encode_bind_conn_to_session(struct nfsd4_compoundres
*resp
, __be32 nfserr
, struct nfsd4_bind_conn_to_session
*bcts
)
2638 RESERVE_SPACE(NFS4_MAX_SESSIONID_LEN
+ 8);
2639 WRITEMEM(bcts
->sessionid
.data
, NFS4_MAX_SESSIONID_LEN
);
2641 /* Sorry, we do not yet support RDMA over 4.1: */
2649 nfsd4_encode_close(struct nfsd4_compoundres
*resp
, __be32 nfserr
, struct nfsd4_close
*close
)
2651 ENCODE_SEQID_OP_HEAD
;
2654 nfsd4_encode_stateid(resp
, &close
->cl_stateid
);
2656 encode_seqid_op_tail(resp
, save
, nfserr
);
2662 nfsd4_encode_commit(struct nfsd4_compoundres
*resp
, __be32 nfserr
, struct nfsd4_commit
*commit
)
2667 RESERVE_SPACE(NFS4_VERIFIER_SIZE
);
2668 WRITEMEM(commit
->co_verf
.data
, NFS4_VERIFIER_SIZE
);
2675 nfsd4_encode_create(struct nfsd4_compoundres
*resp
, __be32 nfserr
, struct nfsd4_create
*create
)
2681 write_cinfo(&p
, &create
->cr_cinfo
);
2683 WRITE32(create
->cr_bmval
[0]);
2684 WRITE32(create
->cr_bmval
[1]);
2691 nfsd4_encode_getattr(struct nfsd4_compoundres
*resp
, __be32 nfserr
, struct nfsd4_getattr
*getattr
)
2693 struct svc_fh
*fhp
= getattr
->ga_fhp
;
2699 buflen
= resp
->end
- resp
->p
- (COMPOUND_ERR_SLACK_SPACE
>> 2);
2700 nfserr
= nfsd4_encode_fattr(fhp
, fhp
->fh_export
, fhp
->fh_dentry
,
2701 resp
->p
, &buflen
, getattr
->ga_bmval
,
2709 nfsd4_encode_getfh(struct nfsd4_compoundres
*resp
, __be32 nfserr
, struct svc_fh
**fhpp
)
2711 struct svc_fh
*fhp
= *fhpp
;
2716 len
= fhp
->fh_handle
.fh_size
;
2717 RESERVE_SPACE(len
+ 4);
2719 WRITEMEM(&fhp
->fh_handle
.fh_base
, len
);
2726 * Including all fields other than the name, a LOCK4denied structure requires
2727 * 8(clientid) + 4(namelen) + 8(offset) + 8(length) + 4(type) = 32 bytes.
2730 nfsd4_encode_lock_denied(struct nfsd4_compoundres
*resp
, struct nfsd4_lock_denied
*ld
)
2732 struct xdr_netobj
*conf
= &ld
->ld_owner
;
2735 RESERVE_SPACE(32 + XDR_LEN(conf
->len
));
2736 WRITE64(ld
->ld_start
);
2737 WRITE64(ld
->ld_length
);
2738 WRITE32(ld
->ld_type
);
2740 WRITEMEM(&ld
->ld_clientid
, 8);
2742 WRITEMEM(conf
->data
, conf
->len
);
2744 } else { /* non - nfsv4 lock in conflict, no clientid nor owner */
2745 WRITE64((u64
)0); /* clientid */
2746 WRITE32(0); /* length of owner name */
2752 nfsd4_encode_lock(struct nfsd4_compoundres
*resp
, __be32 nfserr
, struct nfsd4_lock
*lock
)
2754 ENCODE_SEQID_OP_HEAD
;
2757 nfsd4_encode_stateid(resp
, &lock
->lk_resp_stateid
);
2758 else if (nfserr
== nfserr_denied
)
2759 nfsd4_encode_lock_denied(resp
, &lock
->lk_denied
);
2761 encode_seqid_op_tail(resp
, save
, nfserr
);
2766 nfsd4_encode_lockt(struct nfsd4_compoundres
*resp
, __be32 nfserr
, struct nfsd4_lockt
*lockt
)
2768 if (nfserr
== nfserr_denied
)
2769 nfsd4_encode_lock_denied(resp
, &lockt
->lt_denied
);
2774 nfsd4_encode_locku(struct nfsd4_compoundres
*resp
, __be32 nfserr
, struct nfsd4_locku
*locku
)
2776 ENCODE_SEQID_OP_HEAD
;
2779 nfsd4_encode_stateid(resp
, &locku
->lu_stateid
);
2781 encode_seqid_op_tail(resp
, save
, nfserr
);
2787 nfsd4_encode_link(struct nfsd4_compoundres
*resp
, __be32 nfserr
, struct nfsd4_link
*link
)
2793 write_cinfo(&p
, &link
->li_cinfo
);
2801 nfsd4_encode_open(struct nfsd4_compoundres
*resp
, __be32 nfserr
, struct nfsd4_open
*open
)
2804 ENCODE_SEQID_OP_HEAD
;
2809 nfsd4_encode_stateid(resp
, &open
->op_stateid
);
2811 write_cinfo(&p
, &open
->op_cinfo
);
2812 WRITE32(open
->op_rflags
);
2814 WRITE32(open
->op_bmval
[0]);
2815 WRITE32(open
->op_bmval
[1]);
2816 WRITE32(open
->op_delegate_type
);
2819 switch (open
->op_delegate_type
) {
2820 case NFS4_OPEN_DELEGATE_NONE
:
2822 case NFS4_OPEN_DELEGATE_READ
:
2823 nfsd4_encode_stateid(resp
, &open
->op_delegate_stateid
);
2825 WRITE32(open
->op_recall
);
2828 * TODO: ACE's in delegations
2830 WRITE32(NFS4_ACE_ACCESS_ALLOWED_ACE_TYPE
);
2833 WRITE32(0); /* XXX: is NULL principal ok? */
2836 case NFS4_OPEN_DELEGATE_WRITE
:
2837 nfsd4_encode_stateid(resp
, &open
->op_delegate_stateid
);
2842 * TODO: space_limit's in delegations
2844 WRITE32(NFS4_LIMIT_SIZE
);
2849 * TODO: ACE's in delegations
2851 WRITE32(NFS4_ACE_ACCESS_ALLOWED_ACE_TYPE
);
2854 WRITE32(0); /* XXX: is NULL principal ok? */
2857 case NFS4_OPEN_DELEGATE_NONE_EXT
: /* 4.1 */
2858 switch (open
->op_why_no_deleg
) {
2859 case WND4_CONTENTION
:
2862 WRITE32(open
->op_why_no_deleg
);
2863 WRITE32(0); /* deleg signaling not supported yet */
2867 WRITE32(open
->op_why_no_deleg
);
2874 /* XXX save filehandle here */
2876 encode_seqid_op_tail(resp
, save
, nfserr
);
2881 nfsd4_encode_open_confirm(struct nfsd4_compoundres
*resp
, __be32 nfserr
, struct nfsd4_open_confirm
*oc
)
2883 ENCODE_SEQID_OP_HEAD
;
2886 nfsd4_encode_stateid(resp
, &oc
->oc_resp_stateid
);
2888 encode_seqid_op_tail(resp
, save
, nfserr
);
2893 nfsd4_encode_open_downgrade(struct nfsd4_compoundres
*resp
, __be32 nfserr
, struct nfsd4_open_downgrade
*od
)
2895 ENCODE_SEQID_OP_HEAD
;
2898 nfsd4_encode_stateid(resp
, &od
->od_stateid
);
2900 encode_seqid_op_tail(resp
, save
, nfserr
);
2905 nfsd4_encode_read(struct nfsd4_compoundres
*resp
, __be32 nfserr
,
2906 struct nfsd4_read
*read
)
2911 unsigned long maxcount
;
2917 if (resp
->xbuf
->page_len
)
2918 return nfserr_resource
;
2920 RESERVE_SPACE(8); /* eof flag and byte count */
2922 maxcount
= svc_max_payload(resp
->rqstp
);
2923 if (maxcount
> read
->rd_length
)
2924 maxcount
= read
->rd_length
;
2929 page
= *(resp
->rqstp
->rq_next_page
);
2930 if (!page
) { /* ran out of pages */
2934 resp
->rqstp
->rq_vec
[v
].iov_base
= page_address(page
);
2935 resp
->rqstp
->rq_vec
[v
].iov_len
=
2936 len
< PAGE_SIZE
? len
: PAGE_SIZE
;
2937 resp
->rqstp
->rq_next_page
++;
2943 nfserr
= nfsd_read_file(read
->rd_rqstp
, read
->rd_fhp
, read
->rd_filp
,
2944 read
->rd_offset
, resp
->rqstp
->rq_vec
, read
->rd_vlen
,
2949 eof
= (read
->rd_offset
+ maxcount
>=
2950 read
->rd_fhp
->fh_dentry
->d_inode
->i_size
);
2955 resp
->xbuf
->head
[0].iov_len
= (char*)p
2956 - (char*)resp
->xbuf
->head
[0].iov_base
;
2957 resp
->xbuf
->page_len
= maxcount
;
2959 /* Use rest of head for padding and remaining ops: */
2960 resp
->xbuf
->tail
[0].iov_base
= p
;
2961 resp
->xbuf
->tail
[0].iov_len
= 0;
2965 resp
->xbuf
->tail
[0].iov_base
+= maxcount
&3;
2966 resp
->xbuf
->tail
[0].iov_len
= 4 - (maxcount
&3);
2973 nfsd4_encode_readlink(struct nfsd4_compoundres
*resp
, __be32 nfserr
, struct nfsd4_readlink
*readlink
)
2981 if (resp
->xbuf
->page_len
)
2982 return nfserr_resource
;
2983 if (!*resp
->rqstp
->rq_next_page
)
2984 return nfserr_resource
;
2986 page
= page_address(*(resp
->rqstp
->rq_next_page
++));
2988 maxcount
= PAGE_SIZE
;
2992 * XXX: By default, the ->readlink() VFS op will truncate symlinks
2993 * if they would overflow the buffer. Is this kosher in NFSv4? If
2994 * not, one easy fix is: if ->readlink() precisely fills the buffer,
2995 * assume that truncation occurred, and return NFS4ERR_RESOURCE.
2997 nfserr
= nfsd_readlink(readlink
->rl_rqstp
, readlink
->rl_fhp
, page
, &maxcount
);
2998 if (nfserr
== nfserr_isdir
)
2999 return nfserr_inval
;
3005 resp
->xbuf
->head
[0].iov_len
= (char*)p
3006 - (char*)resp
->xbuf
->head
[0].iov_base
;
3007 resp
->xbuf
->page_len
= maxcount
;
3009 /* Use rest of head for padding and remaining ops: */
3010 resp
->xbuf
->tail
[0].iov_base
= p
;
3011 resp
->xbuf
->tail
[0].iov_len
= 0;
3015 resp
->xbuf
->tail
[0].iov_base
+= maxcount
&3;
3016 resp
->xbuf
->tail
[0].iov_len
= 4 - (maxcount
&3);
3023 nfsd4_encode_readdir(struct nfsd4_compoundres
*resp
, __be32 nfserr
, struct nfsd4_readdir
*readdir
)
3027 __be32
*page
, *savep
, *tailbase
;
3032 if (resp
->xbuf
->page_len
)
3033 return nfserr_resource
;
3034 if (!*resp
->rqstp
->rq_next_page
)
3035 return nfserr_resource
;
3037 RESERVE_SPACE(NFS4_VERIFIER_SIZE
);
3040 /* XXX: Following NFSv3, we ignore the READDIR verifier for now. */
3044 resp
->xbuf
->head
[0].iov_len
= ((char*)resp
->p
) - (char*)resp
->xbuf
->head
[0].iov_base
;
3047 maxcount
= PAGE_SIZE
;
3048 if (maxcount
> readdir
->rd_maxcount
)
3049 maxcount
= readdir
->rd_maxcount
;
3052 * Convert from bytes to words, account for the two words already
3053 * written, make sure to leave two words at the end for the next
3054 * pointer and eof field.
3056 maxcount
= (maxcount
>> 2) - 4;
3058 nfserr
= nfserr_toosmall
;
3062 page
= page_address(*(resp
->rqstp
->rq_next_page
++));
3063 readdir
->common
.err
= 0;
3064 readdir
->buflen
= maxcount
;
3065 readdir
->buffer
= page
;
3066 readdir
->offset
= NULL
;
3068 offset
= readdir
->rd_cookie
;
3069 nfserr
= nfsd_readdir(readdir
->rd_rqstp
, readdir
->rd_fhp
,
3071 &readdir
->common
, nfsd4_encode_dirent
);
3072 if (nfserr
== nfs_ok
&&
3073 readdir
->common
.err
== nfserr_toosmall
&&
3074 readdir
->buffer
== page
)
3075 nfserr
= nfserr_toosmall
;
3079 if (readdir
->offset
)
3080 xdr_encode_hyper(readdir
->offset
, offset
);
3082 p
= readdir
->buffer
;
3083 *p
++ = 0; /* no more entries */
3084 *p
++ = htonl(readdir
->common
.err
== nfserr_eof
);
3085 resp
->xbuf
->page_len
= ((char*)p
) -
3086 (char*)page_address(*(resp
->rqstp
->rq_next_page
-1));
3088 /* Use rest of head for padding and remaining ops: */
3089 resp
->xbuf
->tail
[0].iov_base
= tailbase
;
3090 resp
->xbuf
->tail
[0].iov_len
= 0;
3091 resp
->p
= resp
->xbuf
->tail
[0].iov_base
;
3092 resp
->end
= resp
->p
+ (PAGE_SIZE
- resp
->xbuf
->head
[0].iov_len
)/4;
3102 nfsd4_encode_remove(struct nfsd4_compoundres
*resp
, __be32 nfserr
, struct nfsd4_remove
*remove
)
3108 write_cinfo(&p
, &remove
->rm_cinfo
);
3115 nfsd4_encode_rename(struct nfsd4_compoundres
*resp
, __be32 nfserr
, struct nfsd4_rename
*rename
)
3121 write_cinfo(&p
, &rename
->rn_sinfo
);
3122 write_cinfo(&p
, &rename
->rn_tinfo
);
3129 nfsd4_do_encode_secinfo(struct nfsd4_compoundres
*resp
,
3130 __be32 nfserr
,struct svc_export
*exp
)
3134 struct exp_flavor_info
*flavs
;
3135 struct exp_flavor_info def_flavs
[2];
3140 if (exp
->ex_nflavors
) {
3141 flavs
= exp
->ex_flavors
;
3142 nflavs
= exp
->ex_nflavors
;
3143 } else { /* Handling of some defaults in absence of real secinfo: */
3145 if (exp
->ex_client
->flavour
->flavour
== RPC_AUTH_UNIX
) {
3147 flavs
[0].pseudoflavor
= RPC_AUTH_UNIX
;
3148 flavs
[1].pseudoflavor
= RPC_AUTH_NULL
;
3149 } else if (exp
->ex_client
->flavour
->flavour
== RPC_AUTH_GSS
) {
3151 flavs
[0].pseudoflavor
3152 = svcauth_gss_flavor(exp
->ex_client
);
3155 flavs
[0].pseudoflavor
3156 = exp
->ex_client
->flavour
->flavour
;
3163 for (i
= 0; i
< nflavs
; i
++) {
3164 u32 flav
= flavs
[i
].pseudoflavor
;
3165 struct gss_api_mech
*gm
= gss_mech_get_by_pseudoflavor(flav
);
3169 WRITE32(RPC_AUTH_GSS
);
3171 RESERVE_SPACE(4 + gm
->gm_oid
.len
);
3172 WRITE32(gm
->gm_oid
.len
);
3173 WRITEMEM(gm
->gm_oid
.data
, gm
->gm_oid
.len
);
3176 WRITE32(0); /* qop */
3179 WRITE32(gss_pseudoflavor_to_service(gm
, flav
));
3195 nfsd4_encode_secinfo(struct nfsd4_compoundres
*resp
, __be32 nfserr
,
3196 struct nfsd4_secinfo
*secinfo
)
3198 return nfsd4_do_encode_secinfo(resp
, nfserr
, secinfo
->si_exp
);
3202 nfsd4_encode_secinfo_no_name(struct nfsd4_compoundres
*resp
, __be32 nfserr
,
3203 struct nfsd4_secinfo_no_name
*secinfo
)
3205 return nfsd4_do_encode_secinfo(resp
, nfserr
, secinfo
->sin_exp
);
3209 * The SETATTR encode routine is special -- it always encodes a bitmap,
3210 * regardless of the error status.
3213 nfsd4_encode_setattr(struct nfsd4_compoundres
*resp
, __be32 nfserr
, struct nfsd4_setattr
*setattr
)
3225 WRITE32(setattr
->sa_bmval
[0]);
3226 WRITE32(setattr
->sa_bmval
[1]);
3233 nfsd4_encode_setclientid(struct nfsd4_compoundres
*resp
, __be32 nfserr
, struct nfsd4_setclientid
*scd
)
3238 RESERVE_SPACE(8 + NFS4_VERIFIER_SIZE
);
3239 WRITEMEM(&scd
->se_clientid
, 8);
3240 WRITEMEM(&scd
->se_confirm
, NFS4_VERIFIER_SIZE
);
3243 else if (nfserr
== nfserr_clid_inuse
) {
3253 nfsd4_encode_write(struct nfsd4_compoundres
*resp
, __be32 nfserr
, struct nfsd4_write
*write
)
3259 WRITE32(write
->wr_bytes_written
);
3260 WRITE32(write
->wr_how_written
);
3261 WRITEMEM(write
->wr_verifier
.data
, NFS4_VERIFIER_SIZE
);
3268 nfsd4_encode_exchange_id(struct nfsd4_compoundres
*resp
, __be32 nfserr
,
3269 struct nfsd4_exchange_id
*exid
)
3275 int server_scope_sz
;
3276 uint64_t minor_id
= 0;
3281 major_id
= utsname()->nodename
;
3282 major_id_sz
= strlen(major_id
);
3283 server_scope
= utsname()->nodename
;
3284 server_scope_sz
= strlen(server_scope
);
3287 8 /* eir_clientid */ +
3288 4 /* eir_sequenceid */ +
3290 4 /* spr_how (SP4_NONE) */ +
3291 8 /* so_minor_id */ +
3292 4 /* so_major_id.len */ +
3293 (XDR_QUADLEN(major_id_sz
) * 4) +
3294 4 /* eir_server_scope.len */ +
3295 (XDR_QUADLEN(server_scope_sz
) * 4) +
3296 4 /* eir_server_impl_id.count (0) */);
3298 WRITEMEM(&exid
->clientid
, 8);
3299 WRITE32(exid
->seqid
);
3300 WRITE32(exid
->flags
);
3302 /* state_protect4_r. Currently only support SP4_NONE */
3303 BUG_ON(exid
->spa_how
!= SP4_NONE
);
3304 WRITE32(exid
->spa_how
);
3306 /* The server_owner struct */
3307 WRITE64(minor_id
); /* Minor id */
3309 WRITE32(major_id_sz
);
3310 WRITEMEM(major_id
, major_id_sz
);
3313 WRITE32(server_scope_sz
);
3314 WRITEMEM(server_scope
, server_scope_sz
);
3316 /* Implementation id */
3317 WRITE32(0); /* zero length nfs_impl_id4 array */
3323 nfsd4_encode_create_session(struct nfsd4_compoundres
*resp
, __be32 nfserr
,
3324 struct nfsd4_create_session
*sess
)
3332 WRITEMEM(sess
->sessionid
.data
, NFS4_MAX_SESSIONID_LEN
);
3333 WRITE32(sess
->seqid
);
3334 WRITE32(sess
->flags
);
3338 WRITE32(0); /* headerpadsz */
3339 WRITE32(sess
->fore_channel
.maxreq_sz
);
3340 WRITE32(sess
->fore_channel
.maxresp_sz
);
3341 WRITE32(sess
->fore_channel
.maxresp_cached
);
3342 WRITE32(sess
->fore_channel
.maxops
);
3343 WRITE32(sess
->fore_channel
.maxreqs
);
3344 WRITE32(sess
->fore_channel
.nr_rdma_attrs
);
3347 if (sess
->fore_channel
.nr_rdma_attrs
) {
3349 WRITE32(sess
->fore_channel
.rdma_attrs
);
3354 WRITE32(0); /* headerpadsz */
3355 WRITE32(sess
->back_channel
.maxreq_sz
);
3356 WRITE32(sess
->back_channel
.maxresp_sz
);
3357 WRITE32(sess
->back_channel
.maxresp_cached
);
3358 WRITE32(sess
->back_channel
.maxops
);
3359 WRITE32(sess
->back_channel
.maxreqs
);
3360 WRITE32(sess
->back_channel
.nr_rdma_attrs
);
3363 if (sess
->back_channel
.nr_rdma_attrs
) {
3365 WRITE32(sess
->back_channel
.rdma_attrs
);
3372 nfsd4_encode_destroy_session(struct nfsd4_compoundres
*resp
, __be32 nfserr
,
3373 struct nfsd4_destroy_session
*destroy_session
)
3379 nfsd4_encode_free_stateid(struct nfsd4_compoundres
*resp
, __be32 nfserr
,
3380 struct nfsd4_free_stateid
*free_stateid
)
3394 nfsd4_encode_sequence(struct nfsd4_compoundres
*resp
, __be32 nfserr
,
3395 struct nfsd4_sequence
*seq
)
3402 RESERVE_SPACE(NFS4_MAX_SESSIONID_LEN
+ 20);
3403 WRITEMEM(seq
->sessionid
.data
, NFS4_MAX_SESSIONID_LEN
);
3404 WRITE32(seq
->seqid
);
3405 WRITE32(seq
->slotid
);
3406 /* Note slotid's are numbered from zero: */
3407 WRITE32(seq
->maxslots
- 1); /* sr_highest_slotid */
3408 WRITE32(seq
->maxslots
- 1); /* sr_target_highest_slotid */
3409 WRITE32(seq
->status_flags
);
3412 resp
->cstate
.datap
= p
; /* DRC cache data pointer */
3417 nfsd4_encode_test_stateid(struct nfsd4_compoundres
*resp
, __be32 nfserr
,
3418 struct nfsd4_test_stateid
*test_stateid
)
3420 struct nfsd4_test_stateid_id
*stateid
, *next
;
3423 RESERVE_SPACE(4 + (4 * test_stateid
->ts_num_ids
));
3424 *p
++ = htonl(test_stateid
->ts_num_ids
);
3426 list_for_each_entry_safe(stateid
, next
, &test_stateid
->ts_stateid_list
, ts_id_list
) {
3427 *p
++ = stateid
->ts_id_status
;
3435 nfsd4_encode_noop(struct nfsd4_compoundres
*resp
, __be32 nfserr
, void *p
)
3440 typedef __be32(* nfsd4_enc
)(struct nfsd4_compoundres
*, __be32
, void *);
3443 * Note: nfsd4_enc_ops vector is shared for v4.0 and v4.1
3444 * since we don't need to filter out obsolete ops as this is
3445 * done in the decoding phase.
3447 static nfsd4_enc nfsd4_enc_ops
[] = {
3448 [OP_ACCESS
] = (nfsd4_enc
)nfsd4_encode_access
,
3449 [OP_CLOSE
] = (nfsd4_enc
)nfsd4_encode_close
,
3450 [OP_COMMIT
] = (nfsd4_enc
)nfsd4_encode_commit
,
3451 [OP_CREATE
] = (nfsd4_enc
)nfsd4_encode_create
,
3452 [OP_DELEGPURGE
] = (nfsd4_enc
)nfsd4_encode_noop
,
3453 [OP_DELEGRETURN
] = (nfsd4_enc
)nfsd4_encode_noop
,
3454 [OP_GETATTR
] = (nfsd4_enc
)nfsd4_encode_getattr
,
3455 [OP_GETFH
] = (nfsd4_enc
)nfsd4_encode_getfh
,
3456 [OP_LINK
] = (nfsd4_enc
)nfsd4_encode_link
,
3457 [OP_LOCK
] = (nfsd4_enc
)nfsd4_encode_lock
,
3458 [OP_LOCKT
] = (nfsd4_enc
)nfsd4_encode_lockt
,
3459 [OP_LOCKU
] = (nfsd4_enc
)nfsd4_encode_locku
,
3460 [OP_LOOKUP
] = (nfsd4_enc
)nfsd4_encode_noop
,
3461 [OP_LOOKUPP
] = (nfsd4_enc
)nfsd4_encode_noop
,
3462 [OP_NVERIFY
] = (nfsd4_enc
)nfsd4_encode_noop
,
3463 [OP_OPEN
] = (nfsd4_enc
)nfsd4_encode_open
,
3464 [OP_OPENATTR
] = (nfsd4_enc
)nfsd4_encode_noop
,
3465 [OP_OPEN_CONFIRM
] = (nfsd4_enc
)nfsd4_encode_open_confirm
,
3466 [OP_OPEN_DOWNGRADE
] = (nfsd4_enc
)nfsd4_encode_open_downgrade
,
3467 [OP_PUTFH
] = (nfsd4_enc
)nfsd4_encode_noop
,
3468 [OP_PUTPUBFH
] = (nfsd4_enc
)nfsd4_encode_noop
,
3469 [OP_PUTROOTFH
] = (nfsd4_enc
)nfsd4_encode_noop
,
3470 [OP_READ
] = (nfsd4_enc
)nfsd4_encode_read
,
3471 [OP_READDIR
] = (nfsd4_enc
)nfsd4_encode_readdir
,
3472 [OP_READLINK
] = (nfsd4_enc
)nfsd4_encode_readlink
,
3473 [OP_REMOVE
] = (nfsd4_enc
)nfsd4_encode_remove
,
3474 [OP_RENAME
] = (nfsd4_enc
)nfsd4_encode_rename
,
3475 [OP_RENEW
] = (nfsd4_enc
)nfsd4_encode_noop
,
3476 [OP_RESTOREFH
] = (nfsd4_enc
)nfsd4_encode_noop
,
3477 [OP_SAVEFH
] = (nfsd4_enc
)nfsd4_encode_noop
,
3478 [OP_SECINFO
] = (nfsd4_enc
)nfsd4_encode_secinfo
,
3479 [OP_SETATTR
] = (nfsd4_enc
)nfsd4_encode_setattr
,
3480 [OP_SETCLIENTID
] = (nfsd4_enc
)nfsd4_encode_setclientid
,
3481 [OP_SETCLIENTID_CONFIRM
] = (nfsd4_enc
)nfsd4_encode_noop
,
3482 [OP_VERIFY
] = (nfsd4_enc
)nfsd4_encode_noop
,
3483 [OP_WRITE
] = (nfsd4_enc
)nfsd4_encode_write
,
3484 [OP_RELEASE_LOCKOWNER
] = (nfsd4_enc
)nfsd4_encode_noop
,
3486 /* NFSv4.1 operations */
3487 [OP_BACKCHANNEL_CTL
] = (nfsd4_enc
)nfsd4_encode_noop
,
3488 [OP_BIND_CONN_TO_SESSION
] = (nfsd4_enc
)nfsd4_encode_bind_conn_to_session
,
3489 [OP_EXCHANGE_ID
] = (nfsd4_enc
)nfsd4_encode_exchange_id
,
3490 [OP_CREATE_SESSION
] = (nfsd4_enc
)nfsd4_encode_create_session
,
3491 [OP_DESTROY_SESSION
] = (nfsd4_enc
)nfsd4_encode_destroy_session
,
3492 [OP_FREE_STATEID
] = (nfsd4_enc
)nfsd4_encode_free_stateid
,
3493 [OP_GET_DIR_DELEGATION
] = (nfsd4_enc
)nfsd4_encode_noop
,
3494 [OP_GETDEVICEINFO
] = (nfsd4_enc
)nfsd4_encode_noop
,
3495 [OP_GETDEVICELIST
] = (nfsd4_enc
)nfsd4_encode_noop
,
3496 [OP_LAYOUTCOMMIT
] = (nfsd4_enc
)nfsd4_encode_noop
,
3497 [OP_LAYOUTGET
] = (nfsd4_enc
)nfsd4_encode_noop
,
3498 [OP_LAYOUTRETURN
] = (nfsd4_enc
)nfsd4_encode_noop
,
3499 [OP_SECINFO_NO_NAME
] = (nfsd4_enc
)nfsd4_encode_secinfo_no_name
,
3500 [OP_SEQUENCE
] = (nfsd4_enc
)nfsd4_encode_sequence
,
3501 [OP_SET_SSV
] = (nfsd4_enc
)nfsd4_encode_noop
,
3502 [OP_TEST_STATEID
] = (nfsd4_enc
)nfsd4_encode_test_stateid
,
3503 [OP_WANT_DELEGATION
] = (nfsd4_enc
)nfsd4_encode_noop
,
3504 [OP_DESTROY_CLIENTID
] = (nfsd4_enc
)nfsd4_encode_noop
,
3505 [OP_RECLAIM_COMPLETE
] = (nfsd4_enc
)nfsd4_encode_noop
,
3509 * Calculate the total amount of memory that the compound response has taken
3510 * after encoding the current operation with pad.
3512 * pad: if operation is non-idempotent, pad was calculate by op_rsize_bop()
3513 * which was specified at nfsd4_operation, else pad is zero.
3515 * Compare this length to the session se_fmaxresp_sz and se_fmaxresp_cached.
3517 * Our se_fmaxresp_cached will always be a multiple of PAGE_SIZE, and so
3518 * will be at least a page and will therefore hold the xdr_buf head.
3520 __be32
nfsd4_check_resp_size(struct nfsd4_compoundres
*resp
, u32 pad
)
3522 struct xdr_buf
*xb
= &resp
->rqstp
->rq_res
;
3523 struct nfsd4_session
*session
= NULL
;
3524 struct nfsd4_slot
*slot
= resp
->cstate
.slot
;
3525 u32 length
, tlen
= 0;
3527 if (!nfsd4_has_session(&resp
->cstate
))
3530 session
= resp
->cstate
.session
;
3531 if (session
== NULL
)
3534 if (xb
->page_len
== 0) {
3535 length
= (char *)resp
->p
- (char *)xb
->head
[0].iov_base
+ pad
;
3537 if (xb
->tail
[0].iov_base
&& xb
->tail
[0].iov_len
> 0)
3538 tlen
= (char *)resp
->p
- (char *)xb
->tail
[0].iov_base
;
3540 length
= xb
->head
[0].iov_len
+ xb
->page_len
+ tlen
+ pad
;
3542 dprintk("%s length %u, xb->page_len %u tlen %u pad %u\n", __func__
,
3543 length
, xb
->page_len
, tlen
, pad
);
3545 if (length
> session
->se_fchannel
.maxresp_sz
)
3546 return nfserr_rep_too_big
;
3548 if ((slot
->sl_flags
& NFSD4_SLOT_CACHETHIS
) &&
3549 length
> session
->se_fchannel
.maxresp_cached
)
3550 return nfserr_rep_too_big_to_cache
;
3556 nfsd4_encode_operation(struct nfsd4_compoundres
*resp
, struct nfsd4_op
*op
)
3563 statp
= p
++; /* to be backfilled at the end */
3566 if (op
->opnum
== OP_ILLEGAL
)
3568 BUG_ON(op
->opnum
< 0 || op
->opnum
>= ARRAY_SIZE(nfsd4_enc_ops
) ||
3569 !nfsd4_enc_ops
[op
->opnum
]);
3570 op
->status
= nfsd4_enc_ops
[op
->opnum
](resp
, op
->status
, &op
->u
);
3571 /* nfsd4_check_drc_limit guarantees enough room for error status */
3573 op
->status
= nfsd4_check_resp_size(resp
, 0);
3576 * Note: We write the status directly, instead of using WRITE32(),
3577 * since it is already in network byte order.
3579 *statp
= op
->status
;
3583 * Encode the reply stored in the stateowner reply cache
3585 * XDR note: do not encode rp->rp_buflen: the buffer contains the
3586 * previously sent already encoded operation.
3588 * called with nfs4_lock_state() held
3591 nfsd4_encode_replay(struct nfsd4_compoundres
*resp
, struct nfsd4_op
*op
)
3594 struct nfs4_replay
*rp
= op
->replay
;
3600 *p
++ = rp
->rp_status
; /* already xdr'ed */
3603 RESERVE_SPACE(rp
->rp_buflen
);
3604 WRITEMEM(rp
->rp_buf
, rp
->rp_buflen
);
3609 nfs4svc_encode_voidres(struct svc_rqst
*rqstp
, __be32
*p
, void *dummy
)
3611 return xdr_ressize_check(rqstp
, p
);
3614 int nfsd4_release_compoundargs(void *rq
, __be32
*p
, void *resp
)
3616 struct svc_rqst
*rqstp
= rq
;
3617 struct nfsd4_compoundargs
*args
= rqstp
->rq_argp
;
3619 if (args
->ops
!= args
->iops
) {
3621 args
->ops
= args
->iops
;
3625 while (args
->to_free
) {
3626 struct tmpbuf
*tb
= args
->to_free
;
3627 args
->to_free
= tb
->next
;
3628 tb
->release(tb
->buf
);
3635 nfs4svc_decode_compoundargs(struct svc_rqst
*rqstp
, __be32
*p
, struct nfsd4_compoundargs
*args
)
3638 args
->end
= rqstp
->rq_arg
.head
[0].iov_base
+ rqstp
->rq_arg
.head
[0].iov_len
;
3639 args
->pagelist
= rqstp
->rq_arg
.pages
;
3640 args
->pagelen
= rqstp
->rq_arg
.page_len
;
3642 args
->to_free
= NULL
;
3643 args
->ops
= args
->iops
;
3644 args
->rqstp
= rqstp
;
3646 return !nfsd4_decode_compound(args
);
3650 nfs4svc_encode_compoundres(struct svc_rqst
*rqstp
, __be32
*p
, struct nfsd4_compoundres
*resp
)
3653 * All that remains is to write the tag and operation count...
3655 struct nfsd4_compound_state
*cs
= &resp
->cstate
;
3658 *p
++ = htonl(resp
->taglen
);
3659 memcpy(p
, resp
->tag
, resp
->taglen
);
3660 p
+= XDR_QUADLEN(resp
->taglen
);
3661 *p
++ = htonl(resp
->opcnt
);
3663 if (rqstp
->rq_res
.page_len
)
3664 iov
= &rqstp
->rq_res
.tail
[0];
3666 iov
= &rqstp
->rq_res
.head
[0];
3667 iov
->iov_len
= ((char*)resp
->p
) - (char*)iov
->iov_base
;
3668 BUG_ON(iov
->iov_len
> PAGE_SIZE
);
3669 if (nfsd4_has_session(cs
)) {
3670 if (cs
->status
!= nfserr_replay_cache
) {
3671 nfsd4_store_cache_entry(resp
);
3672 cs
->slot
->sl_flags
&= ~NFSD4_SLOT_INUSE
;
3674 /* Renew the clientid on success and on replay */
3675 release_session_client(cs
->session
);
3676 nfsd4_put_session(cs
->session
);