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 #ifdef CONFIG_NFSD_V4_SECURITY_LABEL
59 #include <linux/security.h>
63 #define NFSDDBG_FACILITY NFSDDBG_XDR
66 * As per referral draft, the fsid for a referral MUST be different from the fsid of the containing
67 * directory in order to indicate to the client that a filesystem boundary is present
68 * We use a fixed fsid for a referral
70 #define NFS4_REFERRAL_FSID_MAJOR 0x8000000ULL
71 #define NFS4_REFERRAL_FSID_MINOR 0x8000000ULL
74 check_filename(char *str
, int len
)
80 if (isdotent(str
, len
))
81 return nfserr_badname
;
82 for (i
= 0; i
< len
; i
++)
84 return nfserr_badname
;
96 dprintk("NFSD: xdr error (%s:%d)\n", \
97 __FILE__, __LINE__); \
98 status = nfserr_bad_xdr; \
101 #define READ32(x) (x) = ntohl(*p++)
102 #define READ64(x) do { \
103 (x) = (u64)ntohl(*p++) << 32; \
104 (x) |= ntohl(*p++); \
106 #define READTIME(x) do { \
111 #define READMEM(x,nbytes) do { \
113 p += XDR_QUADLEN(nbytes); \
115 #define SAVEMEM(x,nbytes) do { \
116 if (!(x = (p==argp->tmp || p == argp->tmpp) ? \
117 savemem(argp, p, nbytes) : \
119 dprintk("NFSD: xdr error (%s:%d)\n", \
120 __FILE__, __LINE__); \
123 p += XDR_QUADLEN(nbytes); \
125 #define COPYMEM(x,nbytes) do { \
126 memcpy((x), p, nbytes); \
127 p += XDR_QUADLEN(nbytes); \
130 /* READ_BUF, read_buf(): nbytes must be <= PAGE_SIZE */
131 #define READ_BUF(nbytes) do { \
132 if (nbytes <= (u32)((char *)argp->end - (char *)argp->p)) { \
134 argp->p += XDR_QUADLEN(nbytes); \
135 } else if (!(p = read_buf(argp, nbytes))) { \
136 dprintk("NFSD: xdr error (%s:%d)\n", \
137 __FILE__, __LINE__); \
142 static void next_decode_page(struct nfsd4_compoundargs
*argp
)
145 argp
->p
= page_address(argp
->pagelist
[0]);
146 if (argp
->pagelen
< PAGE_SIZE
) {
147 argp
->end
= argp
->p
+ (argp
->pagelen
>>2);
150 argp
->end
= argp
->p
+ (PAGE_SIZE
>>2);
151 argp
->pagelen
-= PAGE_SIZE
;
155 static __be32
*read_buf(struct nfsd4_compoundargs
*argp
, u32 nbytes
)
157 /* We want more bytes than seem to be available.
158 * Maybe we need a new page, maybe we have just run out
160 unsigned int avail
= (char *)argp
->end
- (char *)argp
->p
;
162 if (avail
+ argp
->pagelen
< nbytes
)
164 if (avail
+ PAGE_SIZE
< nbytes
) /* need more than a page !! */
166 /* ok, we can do it with the current plus the next page */
167 if (nbytes
<= sizeof(argp
->tmp
))
171 p
= argp
->tmpp
= kmalloc(nbytes
, GFP_KERNEL
);
177 * The following memcpy is safe because read_buf is always
178 * called with nbytes > avail, and the two cases above both
179 * guarantee p points to at least nbytes bytes.
181 memcpy(p
, argp
->p
, avail
);
182 next_decode_page(argp
);
183 memcpy(((char*)p
)+avail
, argp
->p
, (nbytes
- avail
));
184 argp
->p
+= XDR_QUADLEN(nbytes
- avail
);
188 static int zero_clientid(clientid_t
*clid
)
190 return (clid
->cl_boot
== 0) && (clid
->cl_id
== 0);
194 defer_free(struct nfsd4_compoundargs
*argp
,
195 void (*release
)(const void *), void *p
)
199 tb
= kmalloc(sizeof(*tb
), GFP_KERNEL
);
203 tb
->release
= release
;
204 tb
->next
= argp
->to_free
;
209 static char *savemem(struct nfsd4_compoundargs
*argp
, __be32
*p
, int nbytes
)
211 if (p
== argp
->tmp
) {
212 p
= kmemdup(argp
->tmp
, nbytes
, GFP_KERNEL
);
216 BUG_ON(p
!= argp
->tmpp
);
219 if (defer_free(argp
, kfree
, p
)) {
227 nfsd4_decode_bitmap(struct nfsd4_compoundargs
*argp
, u32
*bmval
)
241 READ_BUF(bmlen
<< 2);
253 nfsd4_decode_fattr(struct nfsd4_compoundargs
*argp
, u32
*bmval
,
254 struct iattr
*iattr
, struct nfs4_acl
**acl
,
255 struct xdr_netobj
*label
)
257 int expected_len
, len
= 0;
264 if ((status
= nfsd4_decode_bitmap(argp
, bmval
)))
268 READ32(expected_len
);
270 if (bmval
[0] & FATTR4_WORD0_SIZE
) {
273 READ64(iattr
->ia_size
);
274 iattr
->ia_valid
|= ATTR_SIZE
;
276 if (bmval
[0] & FATTR4_WORD0_ACL
) {
278 struct nfs4_ace
*ace
;
280 READ_BUF(4); len
+= 4;
283 if (nace
> NFS4_ACL_MAX
)
284 return nfserr_resource
;
286 *acl
= nfs4_acl_new(nace
);
291 defer_free(argp
, kfree
, *acl
);
293 (*acl
)->naces
= nace
;
294 for (ace
= (*acl
)->aces
; ace
< (*acl
)->aces
+ nace
; ace
++) {
295 READ_BUF(16); len
+= 16;
298 READ32(ace
->access_mask
);
301 len
+= XDR_QUADLEN(dummy32
) << 2;
302 READMEM(buf
, dummy32
);
303 ace
->whotype
= nfs4_acl_get_whotype(buf
, dummy32
);
305 if (ace
->whotype
!= NFS4_ACL_WHO_NAMED
)
307 else if (ace
->flag
& NFS4_ACE_IDENTIFIER_GROUP
)
308 status
= nfsd_map_name_to_gid(argp
->rqstp
,
309 buf
, dummy32
, &ace
->who_gid
);
311 status
= nfsd_map_name_to_uid(argp
->rqstp
,
312 buf
, dummy32
, &ace
->who_uid
);
318 if (bmval
[1] & FATTR4_WORD1_MODE
) {
321 READ32(iattr
->ia_mode
);
322 iattr
->ia_mode
&= (S_IFMT
| S_IALLUGO
);
323 iattr
->ia_valid
|= ATTR_MODE
;
325 if (bmval
[1] & FATTR4_WORD1_OWNER
) {
330 len
+= (XDR_QUADLEN(dummy32
) << 2);
331 READMEM(buf
, dummy32
);
332 if ((status
= nfsd_map_name_to_uid(argp
->rqstp
, buf
, dummy32
, &iattr
->ia_uid
)))
334 iattr
->ia_valid
|= ATTR_UID
;
336 if (bmval
[1] & FATTR4_WORD1_OWNER_GROUP
) {
341 len
+= (XDR_QUADLEN(dummy32
) << 2);
342 READMEM(buf
, dummy32
);
343 if ((status
= nfsd_map_name_to_gid(argp
->rqstp
, buf
, dummy32
, &iattr
->ia_gid
)))
345 iattr
->ia_valid
|= ATTR_GID
;
347 if (bmval
[1] & FATTR4_WORD1_TIME_ACCESS_SET
) {
352 case NFS4_SET_TO_CLIENT_TIME
:
353 /* We require the high 32 bits of 'seconds' to be 0, and we ignore
354 all 32 bits of 'nseconds'. */
357 READ64(iattr
->ia_atime
.tv_sec
);
358 READ32(iattr
->ia_atime
.tv_nsec
);
359 if (iattr
->ia_atime
.tv_nsec
>= (u32
)1000000000)
361 iattr
->ia_valid
|= (ATTR_ATIME
| ATTR_ATIME_SET
);
363 case NFS4_SET_TO_SERVER_TIME
:
364 iattr
->ia_valid
|= ATTR_ATIME
;
370 if (bmval
[1] & FATTR4_WORD1_TIME_MODIFY_SET
) {
375 case NFS4_SET_TO_CLIENT_TIME
:
376 /* We require the high 32 bits of 'seconds' to be 0, and we ignore
377 all 32 bits of 'nseconds'. */
380 READ64(iattr
->ia_mtime
.tv_sec
);
381 READ32(iattr
->ia_mtime
.tv_nsec
);
382 if (iattr
->ia_mtime
.tv_nsec
>= (u32
)1000000000)
384 iattr
->ia_valid
|= (ATTR_MTIME
| ATTR_MTIME_SET
);
386 case NFS4_SET_TO_SERVER_TIME
:
387 iattr
->ia_valid
|= ATTR_MTIME
;
395 #ifdef CONFIG_NFSD_V4_SECURITY_LABEL
396 if (bmval
[2] & FATTR4_WORD2_SECURITY_LABEL
) {
399 READ32(dummy32
); /* lfs: we don't use it */
402 READ32(dummy32
); /* pi: we don't use it either */
407 if (dummy32
> NFSD4_MAX_SEC_LABEL_LEN
)
408 return nfserr_badlabel
;
409 len
+= (XDR_QUADLEN(dummy32
) << 2);
410 READMEM(buf
, dummy32
);
411 label
->data
= kzalloc(dummy32
+ 1, GFP_KERNEL
);
413 return nfserr_jukebox
;
414 defer_free(argp
, kfree
, label
->data
);
415 memcpy(label
->data
, buf
, dummy32
);
419 if (bmval
[0] & ~NFSD_WRITEABLE_ATTRS_WORD0
420 || bmval
[1] & ~NFSD_WRITEABLE_ATTRS_WORD1
421 || bmval
[2] & ~NFSD_WRITEABLE_ATTRS_WORD2
)
422 READ_BUF(expected_len
- len
);
423 else if (len
!= expected_len
)
429 status
= nfserrno(host_err
);
434 nfsd4_decode_stateid(struct nfsd4_compoundargs
*argp
, stateid_t
*sid
)
438 READ_BUF(sizeof(stateid_t
));
439 READ32(sid
->si_generation
);
440 COPYMEM(&sid
->si_opaque
, sizeof(stateid_opaque_t
));
446 nfsd4_decode_access(struct nfsd4_compoundargs
*argp
, struct nfsd4_access
*access
)
451 READ32(access
->ac_req_access
);
456 static __be32
nfsd4_decode_cb_sec(struct nfsd4_compoundargs
*argp
, struct nfsd4_cb_sec
*cbs
)
464 /* callback_sec_params4 */
468 cbs
->flavor
= (u32
)(-1);
470 /* Is this legal? Be generous, take it to mean AUTH_NONE: */
472 for (i
= 0; i
< nr_secflavs
; ++i
) {
477 /* Nothing to read */
478 if (cbs
->flavor
== (u32
)(-1))
479 cbs
->flavor
= RPC_AUTH_NULL
;
489 SAVEMEM(machine_name
, dummy
);
500 if (cbs
->flavor
== (u32
)(-1)) {
501 kuid_t kuid
= make_kuid(&init_user_ns
, uid
);
502 kgid_t kgid
= make_kgid(&init_user_ns
, gid
);
503 if (uid_valid(kuid
) && gid_valid(kgid
)) {
506 cbs
->flavor
= RPC_AUTH_UNIX
;
508 dprintk("RPC_AUTH_UNIX with invalid"
509 "uid or gid ignoring!\n");
514 dprintk("RPC_AUTH_GSS callback secflavor "
519 /* gcbp_handle_from_server */
522 p
+= XDR_QUADLEN(dummy
);
523 /* gcbp_handle_from_client */
529 dprintk("Illegal callback secflavor\n");
536 static __be32
nfsd4_decode_backchannel_ctl(struct nfsd4_compoundargs
*argp
, struct nfsd4_backchannel_ctl
*bc
)
541 READ32(bc
->bc_cb_program
);
542 nfsd4_decode_cb_sec(argp
, &bc
->bc_cb_sec
);
547 static __be32
nfsd4_decode_bind_conn_to_session(struct nfsd4_compoundargs
*argp
, struct nfsd4_bind_conn_to_session
*bcts
)
551 READ_BUF(NFS4_MAX_SESSIONID_LEN
+ 8);
552 COPYMEM(bcts
->sessionid
.data
, NFS4_MAX_SESSIONID_LEN
);
554 /* XXX: skipping ctsa_use_conn_in_rdma_mode. Perhaps Tom Tucker
555 * could help us figure out we should be using it. */
560 nfsd4_decode_close(struct nfsd4_compoundargs
*argp
, struct nfsd4_close
*close
)
565 READ32(close
->cl_seqid
);
566 return nfsd4_decode_stateid(argp
, &close
->cl_stateid
);
573 nfsd4_decode_commit(struct nfsd4_compoundargs
*argp
, struct nfsd4_commit
*commit
)
578 READ64(commit
->co_offset
);
579 READ32(commit
->co_count
);
585 nfsd4_decode_create(struct nfsd4_compoundargs
*argp
, struct nfsd4_create
*create
)
590 READ32(create
->cr_type
);
591 switch (create
->cr_type
) {
594 READ32(create
->cr_linklen
);
595 READ_BUF(create
->cr_linklen
);
596 SAVEMEM(create
->cr_linkname
, create
->cr_linklen
);
601 READ32(create
->cr_specdata1
);
602 READ32(create
->cr_specdata2
);
612 READ32(create
->cr_namelen
);
613 READ_BUF(create
->cr_namelen
);
614 SAVEMEM(create
->cr_name
, create
->cr_namelen
);
615 if ((status
= check_filename(create
->cr_name
, create
->cr_namelen
)))
618 status
= nfsd4_decode_fattr(argp
, create
->cr_bmval
, &create
->cr_iattr
,
619 &create
->cr_acl
, &create
->cr_label
);
627 nfsd4_decode_delegreturn(struct nfsd4_compoundargs
*argp
, struct nfsd4_delegreturn
*dr
)
629 return nfsd4_decode_stateid(argp
, &dr
->dr_stateid
);
633 nfsd4_decode_getattr(struct nfsd4_compoundargs
*argp
, struct nfsd4_getattr
*getattr
)
635 return nfsd4_decode_bitmap(argp
, getattr
->ga_bmval
);
639 nfsd4_decode_link(struct nfsd4_compoundargs
*argp
, struct nfsd4_link
*link
)
644 READ32(link
->li_namelen
);
645 READ_BUF(link
->li_namelen
);
646 SAVEMEM(link
->li_name
, link
->li_namelen
);
647 if ((status
= check_filename(link
->li_name
, link
->li_namelen
)))
654 nfsd4_decode_lock(struct nfsd4_compoundargs
*argp
, struct nfsd4_lock
*lock
)
659 * type, reclaim(boolean), offset, length, new_lock_owner(boolean)
662 READ32(lock
->lk_type
);
663 if ((lock
->lk_type
< NFS4_READ_LT
) || (lock
->lk_type
> NFS4_WRITEW_LT
))
665 READ32(lock
->lk_reclaim
);
666 READ64(lock
->lk_offset
);
667 READ64(lock
->lk_length
);
668 READ32(lock
->lk_is_new
);
670 if (lock
->lk_is_new
) {
672 READ32(lock
->lk_new_open_seqid
);
673 status
= nfsd4_decode_stateid(argp
, &lock
->lk_new_open_stateid
);
676 READ_BUF(8 + sizeof(clientid_t
));
677 READ32(lock
->lk_new_lock_seqid
);
678 COPYMEM(&lock
->lk_new_clientid
, sizeof(clientid_t
));
679 READ32(lock
->lk_new_owner
.len
);
680 READ_BUF(lock
->lk_new_owner
.len
);
681 READMEM(lock
->lk_new_owner
.data
, lock
->lk_new_owner
.len
);
683 status
= nfsd4_decode_stateid(argp
, &lock
->lk_old_lock_stateid
);
687 READ32(lock
->lk_old_lock_seqid
);
694 nfsd4_decode_lockt(struct nfsd4_compoundargs
*argp
, struct nfsd4_lockt
*lockt
)
699 READ32(lockt
->lt_type
);
700 if((lockt
->lt_type
< NFS4_READ_LT
) || (lockt
->lt_type
> NFS4_WRITEW_LT
))
702 READ64(lockt
->lt_offset
);
703 READ64(lockt
->lt_length
);
704 COPYMEM(&lockt
->lt_clientid
, 8);
705 READ32(lockt
->lt_owner
.len
);
706 READ_BUF(lockt
->lt_owner
.len
);
707 READMEM(lockt
->lt_owner
.data
, lockt
->lt_owner
.len
);
713 nfsd4_decode_locku(struct nfsd4_compoundargs
*argp
, struct nfsd4_locku
*locku
)
718 READ32(locku
->lu_type
);
719 if ((locku
->lu_type
< NFS4_READ_LT
) || (locku
->lu_type
> NFS4_WRITEW_LT
))
721 READ32(locku
->lu_seqid
);
722 status
= nfsd4_decode_stateid(argp
, &locku
->lu_stateid
);
726 READ64(locku
->lu_offset
);
727 READ64(locku
->lu_length
);
733 nfsd4_decode_lookup(struct nfsd4_compoundargs
*argp
, struct nfsd4_lookup
*lookup
)
738 READ32(lookup
->lo_len
);
739 READ_BUF(lookup
->lo_len
);
740 SAVEMEM(lookup
->lo_name
, lookup
->lo_len
);
741 if ((status
= check_filename(lookup
->lo_name
, lookup
->lo_len
)))
747 static __be32
nfsd4_decode_share_access(struct nfsd4_compoundargs
*argp
, u32
*share_access
, u32
*deleg_want
, u32
*deleg_when
)
754 *share_access
= w
& NFS4_SHARE_ACCESS_MASK
;
755 *deleg_want
= w
& NFS4_SHARE_WANT_MASK
;
757 *deleg_when
= w
& NFS4_SHARE_WHEN_MASK
;
759 switch (w
& NFS4_SHARE_ACCESS_MASK
) {
760 case NFS4_SHARE_ACCESS_READ
:
761 case NFS4_SHARE_ACCESS_WRITE
:
762 case NFS4_SHARE_ACCESS_BOTH
:
765 return nfserr_bad_xdr
;
767 w
&= ~NFS4_SHARE_ACCESS_MASK
;
770 if (!argp
->minorversion
)
771 return nfserr_bad_xdr
;
772 switch (w
& NFS4_SHARE_WANT_MASK
) {
773 case NFS4_SHARE_WANT_NO_PREFERENCE
:
774 case NFS4_SHARE_WANT_READ_DELEG
:
775 case NFS4_SHARE_WANT_WRITE_DELEG
:
776 case NFS4_SHARE_WANT_ANY_DELEG
:
777 case NFS4_SHARE_WANT_NO_DELEG
:
778 case NFS4_SHARE_WANT_CANCEL
:
781 return nfserr_bad_xdr
;
783 w
&= ~NFS4_SHARE_WANT_MASK
;
787 if (!deleg_when
) /* open_downgrade */
790 case NFS4_SHARE_SIGNAL_DELEG_WHEN_RESRC_AVAIL
:
791 case NFS4_SHARE_PUSH_DELEG_WHEN_UNCONTENDED
:
792 case (NFS4_SHARE_SIGNAL_DELEG_WHEN_RESRC_AVAIL
|
793 NFS4_SHARE_PUSH_DELEG_WHEN_UNCONTENDED
):
797 return nfserr_bad_xdr
;
800 static __be32
nfsd4_decode_share_deny(struct nfsd4_compoundargs
*argp
, u32
*x
)
806 /* Note: unlinke access bits, deny bits may be zero. */
807 if (*x
& ~NFS4_SHARE_DENY_BOTH
)
808 return nfserr_bad_xdr
;
811 return nfserr_bad_xdr
;
814 static __be32
nfsd4_decode_opaque(struct nfsd4_compoundargs
*argp
, struct xdr_netobj
*o
)
821 if (o
->len
== 0 || o
->len
> NFS4_OPAQUE_LIMIT
)
822 return nfserr_bad_xdr
;
825 SAVEMEM(o
->data
, o
->len
);
828 return nfserr_bad_xdr
;
832 nfsd4_decode_open(struct nfsd4_compoundargs
*argp
, struct nfsd4_open
*open
)
837 memset(open
->op_bmval
, 0, sizeof(open
->op_bmval
));
838 open
->op_iattr
.ia_valid
= 0;
839 open
->op_openowner
= NULL
;
841 open
->op_xdr_error
= 0;
842 /* seqid, share_access, share_deny, clientid, ownerlen */
844 READ32(open
->op_seqid
);
845 /* decode, yet ignore deleg_when until supported */
846 status
= nfsd4_decode_share_access(argp
, &open
->op_share_access
,
847 &open
->op_deleg_want
, &dummy
);
850 status
= nfsd4_decode_share_deny(argp
, &open
->op_share_deny
);
853 READ_BUF(sizeof(clientid_t
));
854 COPYMEM(&open
->op_clientid
, sizeof(clientid_t
));
855 status
= nfsd4_decode_opaque(argp
, &open
->op_owner
);
859 READ32(open
->op_create
);
860 switch (open
->op_create
) {
861 case NFS4_OPEN_NOCREATE
:
863 case NFS4_OPEN_CREATE
:
865 READ32(open
->op_createmode
);
866 switch (open
->op_createmode
) {
867 case NFS4_CREATE_UNCHECKED
:
868 case NFS4_CREATE_GUARDED
:
869 status
= nfsd4_decode_fattr(argp
, open
->op_bmval
,
870 &open
->op_iattr
, &open
->op_acl
, &open
->op_label
);
874 case NFS4_CREATE_EXCLUSIVE
:
875 READ_BUF(NFS4_VERIFIER_SIZE
);
876 COPYMEM(open
->op_verf
.data
, NFS4_VERIFIER_SIZE
);
878 case NFS4_CREATE_EXCLUSIVE4_1
:
879 if (argp
->minorversion
< 1)
881 READ_BUF(NFS4_VERIFIER_SIZE
);
882 COPYMEM(open
->op_verf
.data
, NFS4_VERIFIER_SIZE
);
883 status
= nfsd4_decode_fattr(argp
, open
->op_bmval
,
884 &open
->op_iattr
, &open
->op_acl
, &open
->op_label
);
898 READ32(open
->op_claim_type
);
899 switch (open
->op_claim_type
) {
900 case NFS4_OPEN_CLAIM_NULL
:
901 case NFS4_OPEN_CLAIM_DELEGATE_PREV
:
903 READ32(open
->op_fname
.len
);
904 READ_BUF(open
->op_fname
.len
);
905 SAVEMEM(open
->op_fname
.data
, open
->op_fname
.len
);
906 if ((status
= check_filename(open
->op_fname
.data
, open
->op_fname
.len
)))
909 case NFS4_OPEN_CLAIM_PREVIOUS
:
911 READ32(open
->op_delegate_type
);
913 case NFS4_OPEN_CLAIM_DELEGATE_CUR
:
914 status
= nfsd4_decode_stateid(argp
, &open
->op_delegate_stateid
);
918 READ32(open
->op_fname
.len
);
919 READ_BUF(open
->op_fname
.len
);
920 SAVEMEM(open
->op_fname
.data
, open
->op_fname
.len
);
921 if ((status
= check_filename(open
->op_fname
.data
, open
->op_fname
.len
)))
924 case NFS4_OPEN_CLAIM_FH
:
925 case NFS4_OPEN_CLAIM_DELEG_PREV_FH
:
926 if (argp
->minorversion
< 1)
930 case NFS4_OPEN_CLAIM_DELEG_CUR_FH
:
931 if (argp
->minorversion
< 1)
933 status
= nfsd4_decode_stateid(argp
, &open
->op_delegate_stateid
);
945 nfsd4_decode_open_confirm(struct nfsd4_compoundargs
*argp
, struct nfsd4_open_confirm
*open_conf
)
949 status
= nfsd4_decode_stateid(argp
, &open_conf
->oc_req_stateid
);
953 READ32(open_conf
->oc_seqid
);
959 nfsd4_decode_open_downgrade(struct nfsd4_compoundargs
*argp
, struct nfsd4_open_downgrade
*open_down
)
963 status
= nfsd4_decode_stateid(argp
, &open_down
->od_stateid
);
967 READ32(open_down
->od_seqid
);
968 status
= nfsd4_decode_share_access(argp
, &open_down
->od_share_access
,
969 &open_down
->od_deleg_want
, NULL
);
972 status
= nfsd4_decode_share_deny(argp
, &open_down
->od_share_deny
);
979 nfsd4_decode_putfh(struct nfsd4_compoundargs
*argp
, struct nfsd4_putfh
*putfh
)
984 READ32(putfh
->pf_fhlen
);
985 if (putfh
->pf_fhlen
> NFS4_FHSIZE
)
987 READ_BUF(putfh
->pf_fhlen
);
988 SAVEMEM(putfh
->pf_fhval
, putfh
->pf_fhlen
);
994 nfsd4_decode_read(struct nfsd4_compoundargs
*argp
, struct nfsd4_read
*read
)
998 status
= nfsd4_decode_stateid(argp
, &read
->rd_stateid
);
1002 READ64(read
->rd_offset
);
1003 READ32(read
->rd_length
);
1009 nfsd4_decode_readdir(struct nfsd4_compoundargs
*argp
, struct nfsd4_readdir
*readdir
)
1014 READ64(readdir
->rd_cookie
);
1015 COPYMEM(readdir
->rd_verf
.data
, sizeof(readdir
->rd_verf
.data
));
1016 READ32(readdir
->rd_dircount
); /* just in case you needed a useless field... */
1017 READ32(readdir
->rd_maxcount
);
1018 if ((status
= nfsd4_decode_bitmap(argp
, readdir
->rd_bmval
)))
1025 nfsd4_decode_remove(struct nfsd4_compoundargs
*argp
, struct nfsd4_remove
*remove
)
1030 READ32(remove
->rm_namelen
);
1031 READ_BUF(remove
->rm_namelen
);
1032 SAVEMEM(remove
->rm_name
, remove
->rm_namelen
);
1033 if ((status
= check_filename(remove
->rm_name
, remove
->rm_namelen
)))
1040 nfsd4_decode_rename(struct nfsd4_compoundargs
*argp
, struct nfsd4_rename
*rename
)
1045 READ32(rename
->rn_snamelen
);
1046 READ_BUF(rename
->rn_snamelen
+ 4);
1047 SAVEMEM(rename
->rn_sname
, rename
->rn_snamelen
);
1048 READ32(rename
->rn_tnamelen
);
1049 READ_BUF(rename
->rn_tnamelen
);
1050 SAVEMEM(rename
->rn_tname
, rename
->rn_tnamelen
);
1051 if ((status
= check_filename(rename
->rn_sname
, rename
->rn_snamelen
)))
1053 if ((status
= check_filename(rename
->rn_tname
, rename
->rn_tnamelen
)))
1060 nfsd4_decode_renew(struct nfsd4_compoundargs
*argp
, clientid_t
*clientid
)
1064 READ_BUF(sizeof(clientid_t
));
1065 COPYMEM(clientid
, sizeof(clientid_t
));
1071 nfsd4_decode_secinfo(struct nfsd4_compoundargs
*argp
,
1072 struct nfsd4_secinfo
*secinfo
)
1077 READ32(secinfo
->si_namelen
);
1078 READ_BUF(secinfo
->si_namelen
);
1079 SAVEMEM(secinfo
->si_name
, secinfo
->si_namelen
);
1080 status
= check_filename(secinfo
->si_name
, secinfo
->si_namelen
);
1087 nfsd4_decode_secinfo_no_name(struct nfsd4_compoundargs
*argp
,
1088 struct nfsd4_secinfo_no_name
*sin
)
1093 READ32(sin
->sin_style
);
1098 nfsd4_decode_setattr(struct nfsd4_compoundargs
*argp
, struct nfsd4_setattr
*setattr
)
1102 status
= nfsd4_decode_stateid(argp
, &setattr
->sa_stateid
);
1105 return nfsd4_decode_fattr(argp
, setattr
->sa_bmval
, &setattr
->sa_iattr
,
1106 &setattr
->sa_acl
, &setattr
->sa_label
);
1110 nfsd4_decode_setclientid(struct nfsd4_compoundargs
*argp
, struct nfsd4_setclientid
*setclientid
)
1114 READ_BUF(NFS4_VERIFIER_SIZE
);
1115 COPYMEM(setclientid
->se_verf
.data
, NFS4_VERIFIER_SIZE
);
1117 status
= nfsd4_decode_opaque(argp
, &setclientid
->se_name
);
1119 return nfserr_bad_xdr
;
1121 READ32(setclientid
->se_callback_prog
);
1122 READ32(setclientid
->se_callback_netid_len
);
1124 READ_BUF(setclientid
->se_callback_netid_len
+ 4);
1125 SAVEMEM(setclientid
->se_callback_netid_val
, setclientid
->se_callback_netid_len
);
1126 READ32(setclientid
->se_callback_addr_len
);
1128 READ_BUF(setclientid
->se_callback_addr_len
+ 4);
1129 SAVEMEM(setclientid
->se_callback_addr_val
, setclientid
->se_callback_addr_len
);
1130 READ32(setclientid
->se_callback_ident
);
1136 nfsd4_decode_setclientid_confirm(struct nfsd4_compoundargs
*argp
, struct nfsd4_setclientid_confirm
*scd_c
)
1140 READ_BUF(8 + NFS4_VERIFIER_SIZE
);
1141 COPYMEM(&scd_c
->sc_clientid
, 8);
1142 COPYMEM(&scd_c
->sc_confirm
, NFS4_VERIFIER_SIZE
);
1147 /* Also used for NVERIFY */
1149 nfsd4_decode_verify(struct nfsd4_compoundargs
*argp
, struct nfsd4_verify
*verify
)
1153 if ((status
= nfsd4_decode_bitmap(argp
, verify
->ve_bmval
)))
1156 /* For convenience's sake, we compare raw xdr'd attributes in
1157 * nfsd4_proc_verify */
1160 READ32(verify
->ve_attrlen
);
1161 READ_BUF(verify
->ve_attrlen
);
1162 SAVEMEM(verify
->ve_attrval
, verify
->ve_attrlen
);
1168 nfsd4_decode_write(struct nfsd4_compoundargs
*argp
, struct nfsd4_write
*write
)
1174 status
= nfsd4_decode_stateid(argp
, &write
->wr_stateid
);
1178 READ64(write
->wr_offset
);
1179 READ32(write
->wr_stable_how
);
1180 if (write
->wr_stable_how
> 2)
1182 READ32(write
->wr_buflen
);
1184 /* Sorry .. no magic macros for this.. *
1185 * READ_BUF(write->wr_buflen);
1186 * SAVEMEM(write->wr_buf, write->wr_buflen);
1188 avail
= (char*)argp
->end
- (char*)argp
->p
;
1189 if (avail
+ argp
->pagelen
< write
->wr_buflen
) {
1190 dprintk("NFSD: xdr error (%s:%d)\n",
1191 __FILE__
, __LINE__
);
1194 write
->wr_head
.iov_base
= p
;
1195 write
->wr_head
.iov_len
= avail
;
1196 WARN_ON(avail
!= (XDR_QUADLEN(avail
) << 2));
1197 write
->wr_pagelist
= argp
->pagelist
;
1199 len
= XDR_QUADLEN(write
->wr_buflen
) << 2;
1205 pages
= len
>> PAGE_SHIFT
;
1206 argp
->pagelist
+= pages
;
1207 argp
->pagelen
-= pages
* PAGE_SIZE
;
1208 len
-= pages
* PAGE_SIZE
;
1210 argp
->p
= (__be32
*)page_address(argp
->pagelist
[0]);
1211 argp
->end
= argp
->p
+ XDR_QUADLEN(PAGE_SIZE
);
1213 argp
->p
+= XDR_QUADLEN(len
);
1219 nfsd4_decode_release_lockowner(struct nfsd4_compoundargs
*argp
, struct nfsd4_release_lockowner
*rlockowner
)
1224 COPYMEM(&rlockowner
->rl_clientid
, sizeof(clientid_t
));
1225 READ32(rlockowner
->rl_owner
.len
);
1226 READ_BUF(rlockowner
->rl_owner
.len
);
1227 READMEM(rlockowner
->rl_owner
.data
, rlockowner
->rl_owner
.len
);
1229 if (argp
->minorversion
&& !zero_clientid(&rlockowner
->rl_clientid
))
1230 return nfserr_inval
;
1235 nfsd4_decode_exchange_id(struct nfsd4_compoundargs
*argp
,
1236 struct nfsd4_exchange_id
*exid
)
1241 READ_BUF(NFS4_VERIFIER_SIZE
);
1242 COPYMEM(exid
->verifier
.data
, NFS4_VERIFIER_SIZE
);
1244 status
= nfsd4_decode_opaque(argp
, &exid
->clname
);
1246 return nfserr_bad_xdr
;
1249 READ32(exid
->flags
);
1251 /* Ignore state_protect4_a */
1253 READ32(exid
->spa_how
);
1254 switch (exid
->spa_how
) {
1258 /* spo_must_enforce */
1261 READ_BUF(dummy
* 4);
1264 /* spo_must_allow */
1267 READ_BUF(dummy
* 4);
1274 READ_BUF(dummy
* 4);
1279 READ_BUF(dummy
* 4);
1282 /* ssp_hash_algs<> */
1289 p
+= XDR_QUADLEN(dummy
);
1292 /* ssp_encr_algs<> */
1299 p
+= XDR_QUADLEN(dummy
);
1302 /* ssp_window and ssp_num_gss_handles */
1311 /* Ignore Implementation ID */
1312 READ_BUF(4); /* nfs_impl_id4 array length */
1323 p
+= XDR_QUADLEN(dummy
);
1329 p
+= XDR_QUADLEN(dummy
);
1339 nfsd4_decode_create_session(struct nfsd4_compoundargs
*argp
,
1340 struct nfsd4_create_session
*sess
)
1346 COPYMEM(&sess
->clientid
, 8);
1347 READ32(sess
->seqid
);
1348 READ32(sess
->flags
);
1350 /* Fore channel attrs */
1352 READ32(dummy
); /* headerpadsz is always 0 */
1353 READ32(sess
->fore_channel
.maxreq_sz
);
1354 READ32(sess
->fore_channel
.maxresp_sz
);
1355 READ32(sess
->fore_channel
.maxresp_cached
);
1356 READ32(sess
->fore_channel
.maxops
);
1357 READ32(sess
->fore_channel
.maxreqs
);
1358 READ32(sess
->fore_channel
.nr_rdma_attrs
);
1359 if (sess
->fore_channel
.nr_rdma_attrs
== 1) {
1361 READ32(sess
->fore_channel
.rdma_attrs
);
1362 } else if (sess
->fore_channel
.nr_rdma_attrs
> 1) {
1363 dprintk("Too many fore channel attr bitmaps!\n");
1367 /* Back channel attrs */
1369 READ32(dummy
); /* headerpadsz is always 0 */
1370 READ32(sess
->back_channel
.maxreq_sz
);
1371 READ32(sess
->back_channel
.maxresp_sz
);
1372 READ32(sess
->back_channel
.maxresp_cached
);
1373 READ32(sess
->back_channel
.maxops
);
1374 READ32(sess
->back_channel
.maxreqs
);
1375 READ32(sess
->back_channel
.nr_rdma_attrs
);
1376 if (sess
->back_channel
.nr_rdma_attrs
== 1) {
1378 READ32(sess
->back_channel
.rdma_attrs
);
1379 } else if (sess
->back_channel
.nr_rdma_attrs
> 1) {
1380 dprintk("Too many back channel attr bitmaps!\n");
1385 READ32(sess
->callback_prog
);
1386 nfsd4_decode_cb_sec(argp
, &sess
->cb_sec
);
1391 nfsd4_decode_destroy_session(struct nfsd4_compoundargs
*argp
,
1392 struct nfsd4_destroy_session
*destroy_session
)
1395 READ_BUF(NFS4_MAX_SESSIONID_LEN
);
1396 COPYMEM(destroy_session
->sessionid
.data
, NFS4_MAX_SESSIONID_LEN
);
1402 nfsd4_decode_free_stateid(struct nfsd4_compoundargs
*argp
,
1403 struct nfsd4_free_stateid
*free_stateid
)
1407 READ_BUF(sizeof(stateid_t
));
1408 READ32(free_stateid
->fr_stateid
.si_generation
);
1409 COPYMEM(&free_stateid
->fr_stateid
.si_opaque
, sizeof(stateid_opaque_t
));
1415 nfsd4_decode_sequence(struct nfsd4_compoundargs
*argp
,
1416 struct nfsd4_sequence
*seq
)
1420 READ_BUF(NFS4_MAX_SESSIONID_LEN
+ 16);
1421 COPYMEM(seq
->sessionid
.data
, NFS4_MAX_SESSIONID_LEN
);
1423 READ32(seq
->slotid
);
1424 READ32(seq
->maxslots
);
1425 READ32(seq
->cachethis
);
1431 nfsd4_decode_test_stateid(struct nfsd4_compoundargs
*argp
, struct nfsd4_test_stateid
*test_stateid
)
1435 struct nfsd4_test_stateid_id
*stateid
;
1438 test_stateid
->ts_num_ids
= ntohl(*p
++);
1440 INIT_LIST_HEAD(&test_stateid
->ts_stateid_list
);
1442 for (i
= 0; i
< test_stateid
->ts_num_ids
; i
++) {
1443 stateid
= kmalloc(sizeof(struct nfsd4_test_stateid_id
), GFP_KERNEL
);
1445 status
= nfserrno(-ENOMEM
);
1449 defer_free(argp
, kfree
, stateid
);
1450 INIT_LIST_HEAD(&stateid
->ts_id_list
);
1451 list_add_tail(&stateid
->ts_id_list
, &test_stateid
->ts_stateid_list
);
1453 status
= nfsd4_decode_stateid(argp
, &stateid
->ts_id_stateid
);
1462 dprintk("NFSD: xdr error (%s:%d)\n", __FILE__
, __LINE__
);
1463 status
= nfserr_bad_xdr
;
1467 static __be32
nfsd4_decode_destroy_clientid(struct nfsd4_compoundargs
*argp
, struct nfsd4_destroy_clientid
*dc
)
1472 COPYMEM(&dc
->clientid
, 8);
1477 static __be32
nfsd4_decode_reclaim_complete(struct nfsd4_compoundargs
*argp
, struct nfsd4_reclaim_complete
*rc
)
1482 READ32(rc
->rca_one_fs
);
1488 nfsd4_decode_noop(struct nfsd4_compoundargs
*argp
, void *p
)
1494 nfsd4_decode_notsupp(struct nfsd4_compoundargs
*argp
, void *p
)
1496 return nfserr_notsupp
;
1499 typedef __be32(*nfsd4_dec
)(struct nfsd4_compoundargs
*argp
, void *);
1501 static nfsd4_dec nfsd4_dec_ops
[] = {
1502 [OP_ACCESS
] = (nfsd4_dec
)nfsd4_decode_access
,
1503 [OP_CLOSE
] = (nfsd4_dec
)nfsd4_decode_close
,
1504 [OP_COMMIT
] = (nfsd4_dec
)nfsd4_decode_commit
,
1505 [OP_CREATE
] = (nfsd4_dec
)nfsd4_decode_create
,
1506 [OP_DELEGPURGE
] = (nfsd4_dec
)nfsd4_decode_notsupp
,
1507 [OP_DELEGRETURN
] = (nfsd4_dec
)nfsd4_decode_delegreturn
,
1508 [OP_GETATTR
] = (nfsd4_dec
)nfsd4_decode_getattr
,
1509 [OP_GETFH
] = (nfsd4_dec
)nfsd4_decode_noop
,
1510 [OP_LINK
] = (nfsd4_dec
)nfsd4_decode_link
,
1511 [OP_LOCK
] = (nfsd4_dec
)nfsd4_decode_lock
,
1512 [OP_LOCKT
] = (nfsd4_dec
)nfsd4_decode_lockt
,
1513 [OP_LOCKU
] = (nfsd4_dec
)nfsd4_decode_locku
,
1514 [OP_LOOKUP
] = (nfsd4_dec
)nfsd4_decode_lookup
,
1515 [OP_LOOKUPP
] = (nfsd4_dec
)nfsd4_decode_noop
,
1516 [OP_NVERIFY
] = (nfsd4_dec
)nfsd4_decode_verify
,
1517 [OP_OPEN
] = (nfsd4_dec
)nfsd4_decode_open
,
1518 [OP_OPENATTR
] = (nfsd4_dec
)nfsd4_decode_notsupp
,
1519 [OP_OPEN_CONFIRM
] = (nfsd4_dec
)nfsd4_decode_open_confirm
,
1520 [OP_OPEN_DOWNGRADE
] = (nfsd4_dec
)nfsd4_decode_open_downgrade
,
1521 [OP_PUTFH
] = (nfsd4_dec
)nfsd4_decode_putfh
,
1522 [OP_PUTPUBFH
] = (nfsd4_dec
)nfsd4_decode_noop
,
1523 [OP_PUTROOTFH
] = (nfsd4_dec
)nfsd4_decode_noop
,
1524 [OP_READ
] = (nfsd4_dec
)nfsd4_decode_read
,
1525 [OP_READDIR
] = (nfsd4_dec
)nfsd4_decode_readdir
,
1526 [OP_READLINK
] = (nfsd4_dec
)nfsd4_decode_noop
,
1527 [OP_REMOVE
] = (nfsd4_dec
)nfsd4_decode_remove
,
1528 [OP_RENAME
] = (nfsd4_dec
)nfsd4_decode_rename
,
1529 [OP_RENEW
] = (nfsd4_dec
)nfsd4_decode_renew
,
1530 [OP_RESTOREFH
] = (nfsd4_dec
)nfsd4_decode_noop
,
1531 [OP_SAVEFH
] = (nfsd4_dec
)nfsd4_decode_noop
,
1532 [OP_SECINFO
] = (nfsd4_dec
)nfsd4_decode_secinfo
,
1533 [OP_SETATTR
] = (nfsd4_dec
)nfsd4_decode_setattr
,
1534 [OP_SETCLIENTID
] = (nfsd4_dec
)nfsd4_decode_setclientid
,
1535 [OP_SETCLIENTID_CONFIRM
] = (nfsd4_dec
)nfsd4_decode_setclientid_confirm
,
1536 [OP_VERIFY
] = (nfsd4_dec
)nfsd4_decode_verify
,
1537 [OP_WRITE
] = (nfsd4_dec
)nfsd4_decode_write
,
1538 [OP_RELEASE_LOCKOWNER
] = (nfsd4_dec
)nfsd4_decode_release_lockowner
,
1541 static nfsd4_dec nfsd41_dec_ops
[] = {
1542 [OP_ACCESS
] = (nfsd4_dec
)nfsd4_decode_access
,
1543 [OP_CLOSE
] = (nfsd4_dec
)nfsd4_decode_close
,
1544 [OP_COMMIT
] = (nfsd4_dec
)nfsd4_decode_commit
,
1545 [OP_CREATE
] = (nfsd4_dec
)nfsd4_decode_create
,
1546 [OP_DELEGPURGE
] = (nfsd4_dec
)nfsd4_decode_notsupp
,
1547 [OP_DELEGRETURN
] = (nfsd4_dec
)nfsd4_decode_delegreturn
,
1548 [OP_GETATTR
] = (nfsd4_dec
)nfsd4_decode_getattr
,
1549 [OP_GETFH
] = (nfsd4_dec
)nfsd4_decode_noop
,
1550 [OP_LINK
] = (nfsd4_dec
)nfsd4_decode_link
,
1551 [OP_LOCK
] = (nfsd4_dec
)nfsd4_decode_lock
,
1552 [OP_LOCKT
] = (nfsd4_dec
)nfsd4_decode_lockt
,
1553 [OP_LOCKU
] = (nfsd4_dec
)nfsd4_decode_locku
,
1554 [OP_LOOKUP
] = (nfsd4_dec
)nfsd4_decode_lookup
,
1555 [OP_LOOKUPP
] = (nfsd4_dec
)nfsd4_decode_noop
,
1556 [OP_NVERIFY
] = (nfsd4_dec
)nfsd4_decode_verify
,
1557 [OP_OPEN
] = (nfsd4_dec
)nfsd4_decode_open
,
1558 [OP_OPENATTR
] = (nfsd4_dec
)nfsd4_decode_notsupp
,
1559 [OP_OPEN_CONFIRM
] = (nfsd4_dec
)nfsd4_decode_notsupp
,
1560 [OP_OPEN_DOWNGRADE
] = (nfsd4_dec
)nfsd4_decode_open_downgrade
,
1561 [OP_PUTFH
] = (nfsd4_dec
)nfsd4_decode_putfh
,
1562 [OP_PUTPUBFH
] = (nfsd4_dec
)nfsd4_decode_notsupp
,
1563 [OP_PUTROOTFH
] = (nfsd4_dec
)nfsd4_decode_noop
,
1564 [OP_READ
] = (nfsd4_dec
)nfsd4_decode_read
,
1565 [OP_READDIR
] = (nfsd4_dec
)nfsd4_decode_readdir
,
1566 [OP_READLINK
] = (nfsd4_dec
)nfsd4_decode_noop
,
1567 [OP_REMOVE
] = (nfsd4_dec
)nfsd4_decode_remove
,
1568 [OP_RENAME
] = (nfsd4_dec
)nfsd4_decode_rename
,
1569 [OP_RENEW
] = (nfsd4_dec
)nfsd4_decode_notsupp
,
1570 [OP_RESTOREFH
] = (nfsd4_dec
)nfsd4_decode_noop
,
1571 [OP_SAVEFH
] = (nfsd4_dec
)nfsd4_decode_noop
,
1572 [OP_SECINFO
] = (nfsd4_dec
)nfsd4_decode_secinfo
,
1573 [OP_SETATTR
] = (nfsd4_dec
)nfsd4_decode_setattr
,
1574 [OP_SETCLIENTID
] = (nfsd4_dec
)nfsd4_decode_notsupp
,
1575 [OP_SETCLIENTID_CONFIRM
]= (nfsd4_dec
)nfsd4_decode_notsupp
,
1576 [OP_VERIFY
] = (nfsd4_dec
)nfsd4_decode_verify
,
1577 [OP_WRITE
] = (nfsd4_dec
)nfsd4_decode_write
,
1578 [OP_RELEASE_LOCKOWNER
] = (nfsd4_dec
)nfsd4_decode_notsupp
,
1580 /* new operations for NFSv4.1 */
1581 [OP_BACKCHANNEL_CTL
] = (nfsd4_dec
)nfsd4_decode_backchannel_ctl
,
1582 [OP_BIND_CONN_TO_SESSION
]= (nfsd4_dec
)nfsd4_decode_bind_conn_to_session
,
1583 [OP_EXCHANGE_ID
] = (nfsd4_dec
)nfsd4_decode_exchange_id
,
1584 [OP_CREATE_SESSION
] = (nfsd4_dec
)nfsd4_decode_create_session
,
1585 [OP_DESTROY_SESSION
] = (nfsd4_dec
)nfsd4_decode_destroy_session
,
1586 [OP_FREE_STATEID
] = (nfsd4_dec
)nfsd4_decode_free_stateid
,
1587 [OP_GET_DIR_DELEGATION
] = (nfsd4_dec
)nfsd4_decode_notsupp
,
1588 [OP_GETDEVICEINFO
] = (nfsd4_dec
)nfsd4_decode_notsupp
,
1589 [OP_GETDEVICELIST
] = (nfsd4_dec
)nfsd4_decode_notsupp
,
1590 [OP_LAYOUTCOMMIT
] = (nfsd4_dec
)nfsd4_decode_notsupp
,
1591 [OP_LAYOUTGET
] = (nfsd4_dec
)nfsd4_decode_notsupp
,
1592 [OP_LAYOUTRETURN
] = (nfsd4_dec
)nfsd4_decode_notsupp
,
1593 [OP_SECINFO_NO_NAME
] = (nfsd4_dec
)nfsd4_decode_secinfo_no_name
,
1594 [OP_SEQUENCE
] = (nfsd4_dec
)nfsd4_decode_sequence
,
1595 [OP_SET_SSV
] = (nfsd4_dec
)nfsd4_decode_notsupp
,
1596 [OP_TEST_STATEID
] = (nfsd4_dec
)nfsd4_decode_test_stateid
,
1597 [OP_WANT_DELEGATION
] = (nfsd4_dec
)nfsd4_decode_notsupp
,
1598 [OP_DESTROY_CLIENTID
] = (nfsd4_dec
)nfsd4_decode_destroy_clientid
,
1599 [OP_RECLAIM_COMPLETE
] = (nfsd4_dec
)nfsd4_decode_reclaim_complete
,
1602 struct nfsd4_minorversion_ops
{
1603 nfsd4_dec
*decoders
;
1607 static struct nfsd4_minorversion_ops nfsd4_minorversion
[] = {
1608 [0] = { nfsd4_dec_ops
, ARRAY_SIZE(nfsd4_dec_ops
) },
1609 [1] = { nfsd41_dec_ops
, ARRAY_SIZE(nfsd41_dec_ops
) },
1610 [2] = { nfsd41_dec_ops
, ARRAY_SIZE(nfsd41_dec_ops
) },
1614 nfsd4_decode_compound(struct nfsd4_compoundargs
*argp
)
1617 struct nfsd4_op
*op
;
1618 struct nfsd4_minorversion_ops
*ops
;
1619 bool cachethis
= false;
1623 READ32(argp
->taglen
);
1624 READ_BUF(argp
->taglen
+ 8);
1625 SAVEMEM(argp
->tag
, argp
->taglen
);
1626 READ32(argp
->minorversion
);
1627 READ32(argp
->opcnt
);
1629 if (argp
->taglen
> NFSD4_MAX_TAGLEN
)
1631 if (argp
->opcnt
> 100)
1634 if (argp
->opcnt
> ARRAY_SIZE(argp
->iops
)) {
1635 argp
->ops
= kmalloc(argp
->opcnt
* sizeof(*argp
->ops
), GFP_KERNEL
);
1637 argp
->ops
= argp
->iops
;
1638 dprintk("nfsd: couldn't allocate room for COMPOUND\n");
1643 if (argp
->minorversion
>= ARRAY_SIZE(nfsd4_minorversion
))
1646 ops
= &nfsd4_minorversion
[argp
->minorversion
];
1647 for (i
= 0; i
< argp
->opcnt
; i
++) {
1654 if (op
->opnum
>= FIRST_NFS4_OP
&& op
->opnum
<= LAST_NFS4_OP
)
1655 op
->status
= ops
->decoders
[op
->opnum
](argp
, &op
->u
);
1657 op
->opnum
= OP_ILLEGAL
;
1658 op
->status
= nfserr_op_illegal
;
1666 * We'll try to cache the result in the DRC if any one
1667 * op in the compound wants to be cached:
1669 cachethis
|= nfsd4_cache_this_op(op
);
1671 /* Sessions make the DRC unnecessary: */
1672 if (argp
->minorversion
)
1674 argp
->rqstp
->rq_cachetype
= cachethis
? RC_REPLBUFF
: RC_NOCACHE
;
1679 #define WRITE32(n) *p++ = htonl(n)
1680 #define WRITE64(n) do { \
1681 *p++ = htonl((u32)((n) >> 32)); \
1682 *p++ = htonl((u32)(n)); \
1684 #define WRITEMEM(ptr,nbytes) do { if (nbytes > 0) { \
1685 *(p + XDR_QUADLEN(nbytes) -1) = 0; \
1686 memcpy(p, ptr, nbytes); \
1687 p += XDR_QUADLEN(nbytes); \
1690 static void write32(__be32
**p
, u32 n
)
1695 static void write64(__be32
**p
, u64 n
)
1697 write32(p
, (n
>> 32));
1701 static void write_change(__be32
**p
, struct kstat
*stat
, struct inode
*inode
)
1703 if (IS_I_VERSION(inode
)) {
1704 write64(p
, inode
->i_version
);
1706 write32(p
, stat
->ctime
.tv_sec
);
1707 write32(p
, stat
->ctime
.tv_nsec
);
1711 static void write_cinfo(__be32
**p
, struct nfsd4_change_info
*c
)
1713 write32(p
, c
->atomic
);
1714 if (c
->change_supported
) {
1715 write64(p
, c
->before_change
);
1716 write64(p
, c
->after_change
);
1718 write32(p
, c
->before_ctime_sec
);
1719 write32(p
, c
->before_ctime_nsec
);
1720 write32(p
, c
->after_ctime_sec
);
1721 write32(p
, c
->after_ctime_nsec
);
1725 #define RESERVE_SPACE(nbytes) do { \
1727 BUG_ON(p + XDR_QUADLEN(nbytes) > resp->end); \
1729 #define ADJUST_ARGS() resp->p = p
1731 /* Encode as an array of strings the string given with components
1732 * separated @sep, escaped with esc_enter and esc_exit.
1734 static __be32
nfsd4_encode_components_esc(char sep
, char *components
,
1735 __be32
**pp
, int *buflen
,
1736 char esc_enter
, char esc_exit
)
1740 int strlen
, count
=0;
1741 char *str
, *end
, *next
;
1743 dprintk("nfsd4_encode_components(%s)\n", components
);
1744 if ((*buflen
-= 4) < 0)
1745 return nfserr_resource
;
1746 WRITE32(0); /* We will fill this in with @count later */
1747 end
= str
= components
;
1749 bool found_esc
= false;
1751 /* try to parse as esc_start, ..., esc_end, sep */
1752 if (*str
== esc_enter
) {
1753 for (; *end
&& (*end
!= esc_exit
); end
++)
1754 /* find esc_exit or end of string */;
1756 if (*end
&& (!*next
|| *next
== sep
)) {
1763 for (; *end
&& (*end
!= sep
); end
++)
1764 /* find sep or end of string */;
1768 if ((*buflen
-= ((XDR_QUADLEN(strlen
) << 2) + 4)) < 0)
1769 return nfserr_resource
;
1771 WRITEMEM(str
, strlen
);
1784 /* Encode as an array of strings the string given with components
1787 static __be32
nfsd4_encode_components(char sep
, char *components
,
1788 __be32
**pp
, int *buflen
)
1790 return nfsd4_encode_components_esc(sep
, components
, pp
, buflen
, 0, 0);
1794 * encode a location element of a fs_locations structure
1796 static __be32
nfsd4_encode_fs_location4(struct nfsd4_fs_location
*location
,
1797 __be32
**pp
, int *buflen
)
1802 status
= nfsd4_encode_components_esc(':', location
->hosts
, &p
, buflen
,
1806 status
= nfsd4_encode_components('/', location
->path
, &p
, buflen
);
1814 * Encode a path in RFC3530 'pathname4' format
1816 static __be32
nfsd4_encode_path(const struct path
*root
,
1817 const struct path
*path
, __be32
**pp
, int *buflen
)
1821 .dentry
= path
->dentry
,
1824 struct dentry
**components
= NULL
;
1825 unsigned int ncomponents
= 0;
1826 __be32 err
= nfserr_jukebox
;
1828 dprintk("nfsd4_encode_components(");
1831 /* First walk the path up to the nfsd root, and store the
1832 * dentries/path components in an array.
1835 if (cur
.dentry
== root
->dentry
&& cur
.mnt
== root
->mnt
)
1837 if (cur
.dentry
== cur
.mnt
->mnt_root
) {
1838 if (follow_up(&cur
))
1842 if ((ncomponents
& 15) == 0) {
1843 struct dentry
**new;
1844 new = krealloc(components
,
1845 sizeof(*new) * (ncomponents
+ 16),
1851 components
[ncomponents
++] = cur
.dentry
;
1852 cur
.dentry
= dget_parent(cur
.dentry
);
1858 WRITE32(ncomponents
);
1860 while (ncomponents
) {
1861 struct dentry
*dentry
= components
[ncomponents
- 1];
1862 unsigned int len
= dentry
->d_name
.len
;
1864 *buflen
-= 4 + (XDR_QUADLEN(len
) << 2);
1868 WRITEMEM(dentry
->d_name
.name
, len
);
1869 dprintk("/%s", dentry
->d_name
.name
);
1879 dput(components
[--ncomponents
]);
1885 static __be32
nfsd4_encode_fsloc_fsroot(struct svc_rqst
*rqstp
,
1886 const struct path
*path
, __be32
**pp
, int *buflen
)
1888 struct svc_export
*exp_ps
;
1891 exp_ps
= rqst_find_fsidzero_export(rqstp
);
1893 return nfserrno(PTR_ERR(exp_ps
));
1894 res
= nfsd4_encode_path(&exp_ps
->ex_path
, path
, pp
, buflen
);
1900 * encode a fs_locations structure
1902 static __be32
nfsd4_encode_fs_locations(struct svc_rqst
*rqstp
,
1903 struct svc_export
*exp
,
1904 __be32
**pp
, int *buflen
)
1909 struct nfsd4_fs_locations
*fslocs
= &exp
->ex_fslocs
;
1911 status
= nfsd4_encode_fsloc_fsroot(rqstp
, &exp
->ex_path
, &p
, buflen
);
1914 if ((*buflen
-= 4) < 0)
1915 return nfserr_resource
;
1916 WRITE32(fslocs
->locations_count
);
1917 for (i
=0; i
<fslocs
->locations_count
; i
++) {
1918 status
= nfsd4_encode_fs_location4(&fslocs
->locations
[i
],
1927 static u32
nfs4_file_type(umode_t mode
)
1929 switch (mode
& S_IFMT
) {
1930 case S_IFIFO
: return NF4FIFO
;
1931 case S_IFCHR
: return NF4CHR
;
1932 case S_IFDIR
: return NF4DIR
;
1933 case S_IFBLK
: return NF4BLK
;
1934 case S_IFLNK
: return NF4LNK
;
1935 case S_IFREG
: return NF4REG
;
1936 case S_IFSOCK
: return NF4SOCK
;
1937 default: return NF4BAD
;
1942 nfsd4_encode_name(struct svc_rqst
*rqstp
, int whotype
, kuid_t uid
, kgid_t gid
,
1943 __be32
**p
, int *buflen
)
1947 if (*buflen
< (XDR_QUADLEN(IDMAP_NAMESZ
) << 2) + 4)
1948 return nfserr_resource
;
1949 if (whotype
!= NFS4_ACL_WHO_NAMED
)
1950 status
= nfs4_acl_write_who(whotype
, (u8
*)(*p
+ 1));
1951 else if (gid_valid(gid
))
1952 status
= nfsd_map_gid_to_name(rqstp
, gid
, (u8
*)(*p
+ 1));
1954 status
= nfsd_map_uid_to_name(rqstp
, uid
, (u8
*)(*p
+ 1));
1956 return nfserrno(status
);
1957 *p
= xdr_encode_opaque(*p
, NULL
, status
);
1958 *buflen
-= (XDR_QUADLEN(status
) << 2) + 4;
1959 BUG_ON(*buflen
< 0);
1963 static inline __be32
1964 nfsd4_encode_user(struct svc_rqst
*rqstp
, kuid_t user
, __be32
**p
, int *buflen
)
1966 return nfsd4_encode_name(rqstp
, NFS4_ACL_WHO_NAMED
, user
, INVALID_GID
,
1970 static inline __be32
1971 nfsd4_encode_group(struct svc_rqst
*rqstp
, kgid_t group
, __be32
**p
, int *buflen
)
1973 return nfsd4_encode_name(rqstp
, NFS4_ACL_WHO_NAMED
, INVALID_UID
, group
,
1977 static inline __be32
1978 nfsd4_encode_aclname(struct svc_rqst
*rqstp
, struct nfs4_ace
*ace
,
1979 __be32
**p
, int *buflen
)
1981 kuid_t uid
= INVALID_UID
;
1982 kgid_t gid
= INVALID_GID
;
1984 if (ace
->whotype
== NFS4_ACL_WHO_NAMED
) {
1985 if (ace
->flag
& NFS4_ACE_IDENTIFIER_GROUP
)
1990 return nfsd4_encode_name(rqstp
, ace
->whotype
, uid
, gid
, p
, buflen
);
1993 #define WORD0_ABSENT_FS_ATTRS (FATTR4_WORD0_FS_LOCATIONS | FATTR4_WORD0_FSID | \
1994 FATTR4_WORD0_RDATTR_ERROR)
1995 #define WORD1_ABSENT_FS_ATTRS FATTR4_WORD1_MOUNTED_ON_FILEID
1997 #ifdef CONFIG_NFSD_V4_SECURITY_LABEL
1998 static inline __be32
1999 nfsd4_encode_security_label(struct svc_rqst
*rqstp
, void *context
, int len
, __be32
**pp
, int *buflen
)
2003 if (*buflen
< ((XDR_QUADLEN(len
) << 2) + 4 + 4 + 4))
2004 return nfserr_resource
;
2007 * For now we use a 0 here to indicate the null translation; in
2008 * the future we may place a call to translation code here.
2010 if ((*buflen
-= 8) < 0)
2011 return nfserr_resource
;
2013 WRITE32(0); /* lfs */
2014 WRITE32(0); /* pi */
2015 p
= xdr_encode_opaque(p
, context
, len
);
2016 *buflen
-= (XDR_QUADLEN(len
) << 2) + 4;
2022 static inline __be32
2023 nfsd4_encode_security_label(struct svc_rqst
*rqstp
, void *context
, int len
, __be32
**pp
, int *buflen
)
2027 static __be32
fattr_handle_absent_fs(u32
*bmval0
, u32
*bmval1
, u32
*rdattr_err
)
2029 /* As per referral draft: */
2030 if (*bmval0
& ~WORD0_ABSENT_FS_ATTRS
||
2031 *bmval1
& ~WORD1_ABSENT_FS_ATTRS
) {
2032 if (*bmval0
& FATTR4_WORD0_RDATTR_ERROR
||
2033 *bmval0
& FATTR4_WORD0_FS_LOCATIONS
)
2034 *rdattr_err
= NFSERR_MOVED
;
2036 return nfserr_moved
;
2038 *bmval0
&= WORD0_ABSENT_FS_ATTRS
;
2039 *bmval1
&= WORD1_ABSENT_FS_ATTRS
;
2044 static int get_parent_attributes(struct svc_export
*exp
, struct kstat
*stat
)
2046 struct path path
= exp
->ex_path
;
2050 while (follow_up(&path
)) {
2051 if (path
.dentry
!= path
.mnt
->mnt_root
)
2054 err
= vfs_getattr(&path
, stat
);
2060 * Note: @fhp can be NULL; in this case, we might have to compose the filehandle
2063 * countp is the buffer size in _words_
2066 nfsd4_encode_fattr(struct svc_fh
*fhp
, struct svc_export
*exp
,
2067 struct dentry
*dentry
, __be32
**buffer
, int count
, u32
*bmval
,
2068 struct svc_rqst
*rqstp
, int ignore_crossmnt
)
2070 u32 bmval0
= bmval
[0];
2071 u32 bmval1
= bmval
[1];
2072 u32 bmval2
= bmval
[2];
2074 struct svc_fh tempfh
;
2075 struct kstatfs statfs
;
2076 int buflen
= count
<< 2;
2081 __be32
*p
= *buffer
;
2085 struct nfs4_acl
*acl
= NULL
;
2086 void *context
= NULL
;
2088 bool contextsupport
= false;
2089 struct nfsd4_compoundres
*resp
= rqstp
->rq_resp
;
2090 u32 minorversion
= resp
->cstate
.minorversion
;
2091 struct path path
= {
2092 .mnt
= exp
->ex_path
.mnt
,
2095 struct nfsd_net
*nn
= net_generic(SVC_NET(rqstp
), nfsd_net_id
);
2097 BUG_ON(bmval1
& NFSD_WRITEONLY_ATTRS_WORD1
);
2098 BUG_ON(bmval0
& ~nfsd_suppattrs0(minorversion
));
2099 BUG_ON(bmval1
& ~nfsd_suppattrs1(minorversion
));
2100 BUG_ON(bmval2
& ~nfsd_suppattrs2(minorversion
));
2102 if (exp
->ex_fslocs
.migrated
) {
2104 status
= fattr_handle_absent_fs(&bmval0
, &bmval1
, &rdattr_err
);
2109 err
= vfs_getattr(&path
, &stat
);
2112 if ((bmval0
& (FATTR4_WORD0_FILES_FREE
| FATTR4_WORD0_FILES_TOTAL
|
2113 FATTR4_WORD0_MAXNAME
)) ||
2114 (bmval1
& (FATTR4_WORD1_SPACE_AVAIL
| FATTR4_WORD1_SPACE_FREE
|
2115 FATTR4_WORD1_SPACE_TOTAL
))) {
2116 err
= vfs_statfs(&path
, &statfs
);
2120 if ((bmval0
& (FATTR4_WORD0_FILEHANDLE
| FATTR4_WORD0_FSID
)) && !fhp
) {
2121 fh_init(&tempfh
, NFS4_FHSIZE
);
2122 status
= fh_compose(&tempfh
, exp
, dentry
, NULL
);
2127 if (bmval0
& (FATTR4_WORD0_ACL
| FATTR4_WORD0_ACLSUPPORT
2128 | FATTR4_WORD0_SUPPORTED_ATTRS
)) {
2129 err
= nfsd4_get_nfs4_acl(rqstp
, dentry
, &acl
);
2130 aclsupport
= (err
== 0);
2131 if (bmval0
& FATTR4_WORD0_ACL
) {
2132 if (err
== -EOPNOTSUPP
)
2133 bmval0
&= ~FATTR4_WORD0_ACL
;
2134 else if (err
== -EINVAL
) {
2135 status
= nfserr_attrnotsupp
;
2137 } else if (err
!= 0)
2142 #ifdef CONFIG_NFSD_V4_SECURITY_LABEL
2143 if ((bmval
[2] & FATTR4_WORD2_SECURITY_LABEL
) ||
2144 bmval
[0] & FATTR4_WORD0_SUPPORTED_ATTRS
) {
2145 err
= security_inode_getsecctx(dentry
->d_inode
,
2146 &context
, &contextlen
);
2147 contextsupport
= (err
== 0);
2148 if (bmval2
& FATTR4_WORD2_SECURITY_LABEL
) {
2149 if (err
== -EOPNOTSUPP
)
2150 bmval2
&= ~FATTR4_WORD2_SECURITY_LABEL
;
2155 #endif /* CONFIG_NFSD_V4_SECURITY_LABEL */
2158 if ((buflen
-= 16) < 0)
2164 } else if (bmval1
) {
2165 if ((buflen
-= 12) < 0)
2171 if ((buflen
-= 8) < 0)
2176 attrlenp
= p
++; /* to be backfilled later */
2178 if (bmval0
& FATTR4_WORD0_SUPPORTED_ATTRS
) {
2179 u32 word0
= nfsd_suppattrs0(minorversion
);
2180 u32 word1
= nfsd_suppattrs1(minorversion
);
2181 u32 word2
= nfsd_suppattrs2(minorversion
);
2184 word0
&= ~FATTR4_WORD0_ACL
;
2185 if (!contextsupport
)
2186 word2
&= ~FATTR4_WORD2_SECURITY_LABEL
;
2188 if ((buflen
-= 12) < 0)
2194 if ((buflen
-= 16) < 0)
2202 if (bmval0
& FATTR4_WORD0_TYPE
) {
2203 if ((buflen
-= 4) < 0)
2205 dummy
= nfs4_file_type(stat
.mode
);
2206 if (dummy
== NF4BAD
)
2207 goto out_serverfault
;
2210 if (bmval0
& FATTR4_WORD0_FH_EXPIRE_TYPE
) {
2211 if ((buflen
-= 4) < 0)
2213 if (exp
->ex_flags
& NFSEXP_NOSUBTREECHECK
)
2214 WRITE32(NFS4_FH_PERSISTENT
);
2216 WRITE32(NFS4_FH_PERSISTENT
|NFS4_FH_VOL_RENAME
);
2218 if (bmval0
& FATTR4_WORD0_CHANGE
) {
2219 if ((buflen
-= 8) < 0)
2221 write_change(&p
, &stat
, dentry
->d_inode
);
2223 if (bmval0
& FATTR4_WORD0_SIZE
) {
2224 if ((buflen
-= 8) < 0)
2228 if (bmval0
& FATTR4_WORD0_LINK_SUPPORT
) {
2229 if ((buflen
-= 4) < 0)
2233 if (bmval0
& FATTR4_WORD0_SYMLINK_SUPPORT
) {
2234 if ((buflen
-= 4) < 0)
2238 if (bmval0
& FATTR4_WORD0_NAMED_ATTR
) {
2239 if ((buflen
-= 4) < 0)
2243 if (bmval0
& FATTR4_WORD0_FSID
) {
2244 if ((buflen
-= 16) < 0)
2246 if (exp
->ex_fslocs
.migrated
) {
2247 WRITE64(NFS4_REFERRAL_FSID_MAJOR
);
2248 WRITE64(NFS4_REFERRAL_FSID_MINOR
);
2249 } else switch(fsid_source(fhp
)) {
2250 case FSIDSOURCE_FSID
:
2251 WRITE64((u64
)exp
->ex_fsid
);
2254 case FSIDSOURCE_DEV
:
2256 WRITE32(MAJOR(stat
.dev
));
2258 WRITE32(MINOR(stat
.dev
));
2260 case FSIDSOURCE_UUID
:
2261 WRITEMEM(exp
->ex_uuid
, 16);
2265 if (bmval0
& FATTR4_WORD0_UNIQUE_HANDLES
) {
2266 if ((buflen
-= 4) < 0)
2270 if (bmval0
& FATTR4_WORD0_LEASE_TIME
) {
2271 if ((buflen
-= 4) < 0)
2273 WRITE32(nn
->nfsd4_lease
);
2275 if (bmval0
& FATTR4_WORD0_RDATTR_ERROR
) {
2276 if ((buflen
-= 4) < 0)
2278 WRITE32(rdattr_err
);
2280 if (bmval0
& FATTR4_WORD0_ACL
) {
2281 struct nfs4_ace
*ace
;
2284 if ((buflen
-= 4) < 0)
2290 if ((buflen
-= 4) < 0)
2292 WRITE32(acl
->naces
);
2294 for (ace
= acl
->aces
; ace
< acl
->aces
+ acl
->naces
; ace
++) {
2295 if ((buflen
-= 4*3) < 0)
2299 WRITE32(ace
->access_mask
& NFS4_ACE_MASK_ALL
);
2300 status
= nfsd4_encode_aclname(rqstp
, ace
, &p
, &buflen
);
2301 if (status
== nfserr_resource
)
2308 if (bmval0
& FATTR4_WORD0_ACLSUPPORT
) {
2309 if ((buflen
-= 4) < 0)
2311 WRITE32(aclsupport
?
2312 ACL4_SUPPORT_ALLOW_ACL
|ACL4_SUPPORT_DENY_ACL
: 0);
2314 if (bmval0
& FATTR4_WORD0_CANSETTIME
) {
2315 if ((buflen
-= 4) < 0)
2319 if (bmval0
& FATTR4_WORD0_CASE_INSENSITIVE
) {
2320 if ((buflen
-= 4) < 0)
2324 if (bmval0
& FATTR4_WORD0_CASE_PRESERVING
) {
2325 if ((buflen
-= 4) < 0)
2329 if (bmval0
& FATTR4_WORD0_CHOWN_RESTRICTED
) {
2330 if ((buflen
-= 4) < 0)
2334 if (bmval0
& FATTR4_WORD0_FILEHANDLE
) {
2335 buflen
-= (XDR_QUADLEN(fhp
->fh_handle
.fh_size
) << 2) + 4;
2338 WRITE32(fhp
->fh_handle
.fh_size
);
2339 WRITEMEM(&fhp
->fh_handle
.fh_base
, fhp
->fh_handle
.fh_size
);
2341 if (bmval0
& FATTR4_WORD0_FILEID
) {
2342 if ((buflen
-= 8) < 0)
2346 if (bmval0
& FATTR4_WORD0_FILES_AVAIL
) {
2347 if ((buflen
-= 8) < 0)
2349 WRITE64((u64
) statfs
.f_ffree
);
2351 if (bmval0
& FATTR4_WORD0_FILES_FREE
) {
2352 if ((buflen
-= 8) < 0)
2354 WRITE64((u64
) statfs
.f_ffree
);
2356 if (bmval0
& FATTR4_WORD0_FILES_TOTAL
) {
2357 if ((buflen
-= 8) < 0)
2359 WRITE64((u64
) statfs
.f_files
);
2361 if (bmval0
& FATTR4_WORD0_FS_LOCATIONS
) {
2362 status
= nfsd4_encode_fs_locations(rqstp
, exp
, &p
, &buflen
);
2363 if (status
== nfserr_resource
)
2368 if (bmval0
& FATTR4_WORD0_HOMOGENEOUS
) {
2369 if ((buflen
-= 4) < 0)
2373 if (bmval0
& FATTR4_WORD0_MAXFILESIZE
) {
2374 if ((buflen
-= 8) < 0)
2378 if (bmval0
& FATTR4_WORD0_MAXLINK
) {
2379 if ((buflen
-= 4) < 0)
2383 if (bmval0
& FATTR4_WORD0_MAXNAME
) {
2384 if ((buflen
-= 4) < 0)
2386 WRITE32(statfs
.f_namelen
);
2388 if (bmval0
& FATTR4_WORD0_MAXREAD
) {
2389 if ((buflen
-= 8) < 0)
2391 WRITE64((u64
) svc_max_payload(rqstp
));
2393 if (bmval0
& FATTR4_WORD0_MAXWRITE
) {
2394 if ((buflen
-= 8) < 0)
2396 WRITE64((u64
) svc_max_payload(rqstp
));
2398 if (bmval1
& FATTR4_WORD1_MODE
) {
2399 if ((buflen
-= 4) < 0)
2401 WRITE32(stat
.mode
& S_IALLUGO
);
2403 if (bmval1
& FATTR4_WORD1_NO_TRUNC
) {
2404 if ((buflen
-= 4) < 0)
2408 if (bmval1
& FATTR4_WORD1_NUMLINKS
) {
2409 if ((buflen
-= 4) < 0)
2411 WRITE32(stat
.nlink
);
2413 if (bmval1
& FATTR4_WORD1_OWNER
) {
2414 status
= nfsd4_encode_user(rqstp
, stat
.uid
, &p
, &buflen
);
2415 if (status
== nfserr_resource
)
2420 if (bmval1
& FATTR4_WORD1_OWNER_GROUP
) {
2421 status
= nfsd4_encode_group(rqstp
, stat
.gid
, &p
, &buflen
);
2422 if (status
== nfserr_resource
)
2427 if (bmval1
& FATTR4_WORD1_RAWDEV
) {
2428 if ((buflen
-= 8) < 0)
2430 WRITE32((u32
) MAJOR(stat
.rdev
));
2431 WRITE32((u32
) MINOR(stat
.rdev
));
2433 if (bmval1
& FATTR4_WORD1_SPACE_AVAIL
) {
2434 if ((buflen
-= 8) < 0)
2436 dummy64
= (u64
)statfs
.f_bavail
* (u64
)statfs
.f_bsize
;
2439 if (bmval1
& FATTR4_WORD1_SPACE_FREE
) {
2440 if ((buflen
-= 8) < 0)
2442 dummy64
= (u64
)statfs
.f_bfree
* (u64
)statfs
.f_bsize
;
2445 if (bmval1
& FATTR4_WORD1_SPACE_TOTAL
) {
2446 if ((buflen
-= 8) < 0)
2448 dummy64
= (u64
)statfs
.f_blocks
* (u64
)statfs
.f_bsize
;
2451 if (bmval1
& FATTR4_WORD1_SPACE_USED
) {
2452 if ((buflen
-= 8) < 0)
2454 dummy64
= (u64
)stat
.blocks
<< 9;
2457 if (bmval1
& FATTR4_WORD1_TIME_ACCESS
) {
2458 if ((buflen
-= 12) < 0)
2460 WRITE64((s64
)stat
.atime
.tv_sec
);
2461 WRITE32(stat
.atime
.tv_nsec
);
2463 if (bmval1
& FATTR4_WORD1_TIME_DELTA
) {
2464 if ((buflen
-= 12) < 0)
2470 if (bmval1
& FATTR4_WORD1_TIME_METADATA
) {
2471 if ((buflen
-= 12) < 0)
2473 WRITE64((s64
)stat
.ctime
.tv_sec
);
2474 WRITE32(stat
.ctime
.tv_nsec
);
2476 if (bmval1
& FATTR4_WORD1_TIME_MODIFY
) {
2477 if ((buflen
-= 12) < 0)
2479 WRITE64((s64
)stat
.mtime
.tv_sec
);
2480 WRITE32(stat
.mtime
.tv_nsec
);
2482 if (bmval1
& FATTR4_WORD1_MOUNTED_ON_FILEID
) {
2483 if ((buflen
-= 8) < 0)
2486 * Get parent's attributes if not ignoring crossmount
2487 * and this is the root of a cross-mounted filesystem.
2489 if (ignore_crossmnt
== 0 &&
2490 dentry
== exp
->ex_path
.mnt
->mnt_root
)
2491 get_parent_attributes(exp
, &stat
);
2494 if (bmval2
& FATTR4_WORD2_SECURITY_LABEL
) {
2495 status
= nfsd4_encode_security_label(rqstp
, context
,
2496 contextlen
, &p
, &buflen
);
2500 if (bmval2
& FATTR4_WORD2_SUPPATTR_EXCLCREAT
) {
2502 WRITE32(NFSD_SUPPATTR_EXCLCREAT_WORD0
);
2503 WRITE32(NFSD_SUPPATTR_EXCLCREAT_WORD1
);
2504 WRITE32(NFSD_SUPPATTR_EXCLCREAT_WORD2
);
2507 *attrlenp
= htonl((char *)p
- (char *)attrlenp
- 4);
2512 #ifdef CONFIG_NFSD_V4_SECURITY_LABEL
2514 security_release_secctx(context
, contextlen
);
2515 #endif /* CONFIG_NFSD_V4_SECURITY_LABEL */
2521 status
= nfserrno(err
);
2524 status
= nfserr_resource
;
2527 status
= nfserr_serverfault
;
2531 static inline int attributes_need_mount(u32
*bmval
)
2533 if (bmval
[0] & ~(FATTR4_WORD0_RDATTR_ERROR
| FATTR4_WORD0_LEASE_TIME
))
2535 if (bmval
[1] & ~FATTR4_WORD1_MOUNTED_ON_FILEID
)
2541 nfsd4_encode_dirent_fattr(struct nfsd4_readdir
*cd
,
2542 const char *name
, int namlen
, __be32
**p
, int buflen
)
2544 struct svc_export
*exp
= cd
->rd_fhp
->fh_export
;
2545 struct dentry
*dentry
;
2547 int ignore_crossmnt
= 0;
2549 dentry
= lookup_one_len(name
, cd
->rd_fhp
->fh_dentry
, namlen
);
2551 return nfserrno(PTR_ERR(dentry
));
2552 if (!dentry
->d_inode
) {
2554 * nfsd_buffered_readdir drops the i_mutex between
2555 * readdir and calling this callback, leaving a window
2556 * where this directory entry could have gone away.
2559 return nfserr_noent
;
2564 * In the case of a mountpoint, the client may be asking for
2565 * attributes that are only properties of the underlying filesystem
2566 * as opposed to the cross-mounted file system. In such a case,
2567 * we will not follow the cross mount and will fill the attribtutes
2568 * directly from the mountpoint dentry.
2570 if (nfsd_mountpoint(dentry
, exp
)) {
2573 if (!(exp
->ex_flags
& NFSEXP_V4ROOT
)
2574 && !attributes_need_mount(cd
->rd_bmval
)) {
2575 ignore_crossmnt
= 1;
2579 * Why the heck aren't we just using nfsd_lookup??
2580 * Different "."/".." handling? Something else?
2581 * At least, add a comment here to explain....
2583 err
= nfsd_cross_mnt(cd
->rd_rqstp
, &dentry
, &exp
);
2585 nfserr
= nfserrno(err
);
2588 nfserr
= check_nfsd_access(exp
, cd
->rd_rqstp
);
2594 nfserr
= nfsd4_encode_fattr(NULL
, exp
, dentry
, p
, buflen
, cd
->rd_bmval
,
2595 cd
->rd_rqstp
, ignore_crossmnt
);
2603 nfsd4_encode_rdattr_error(__be32
*p
, int buflen
, __be32 nfserr
)
2610 *p
++ = htonl(FATTR4_WORD0_RDATTR_ERROR
); /* bmval0 */
2611 *p
++ = htonl(0); /* bmval1 */
2614 *p
++ = nfserr
; /* no htonl */
2615 *attrlenp
= htonl((char *)p
- (char *)attrlenp
- 4);
2620 nfsd4_encode_dirent(void *ccdv
, const char *name
, int namlen
,
2621 loff_t offset
, u64 ino
, unsigned int d_type
)
2623 struct readdir_cd
*ccd
= ccdv
;
2624 struct nfsd4_readdir
*cd
= container_of(ccd
, struct nfsd4_readdir
, common
);
2626 __be32
*p
= cd
->buffer
;
2628 __be32 nfserr
= nfserr_toosmall
;
2630 /* In nfsv4, "." and ".." never make it onto the wire.. */
2631 if (name
&& isdotent(name
, namlen
)) {
2632 cd
->common
.err
= nfs_ok
;
2637 xdr_encode_hyper(cd
->offset
, (u64
) offset
);
2639 buflen
= cd
->buflen
- 4 - XDR_QUADLEN(namlen
);
2643 *p
++ = xdr_one
; /* mark entry present */
2645 p
= xdr_encode_hyper(p
, NFS_OFFSET_MAX
); /* offset of next entry */
2646 p
= xdr_encode_array(p
, name
, namlen
); /* name length & name */
2648 nfserr
= nfsd4_encode_dirent_fattr(cd
, name
, namlen
, &p
, buflen
);
2652 case nfserr_resource
:
2653 nfserr
= nfserr_toosmall
;
2659 * If the client requested the RDATTR_ERROR attribute,
2660 * we stuff the error code into this attribute
2661 * and continue. If this attribute was not requested,
2662 * then in accordance with the spec, we fail the
2663 * entire READDIR operation(!)
2665 if (!(cd
->rd_bmval
[0] & FATTR4_WORD0_RDATTR_ERROR
))
2667 p
= nfsd4_encode_rdattr_error(p
, buflen
, nfserr
);
2669 nfserr
= nfserr_toosmall
;
2673 cd
->buflen
-= (p
- cd
->buffer
);
2675 cd
->offset
= cookiep
;
2677 cd
->common
.err
= nfs_ok
;
2680 cd
->common
.err
= nfserr
;
2685 nfsd4_encode_stateid(struct nfsd4_compoundres
*resp
, stateid_t
*sid
)
2689 RESERVE_SPACE(sizeof(stateid_t
));
2690 WRITE32(sid
->si_generation
);
2691 WRITEMEM(&sid
->si_opaque
, sizeof(stateid_opaque_t
));
2696 nfsd4_encode_access(struct nfsd4_compoundres
*resp
, __be32 nfserr
, struct nfsd4_access
*access
)
2702 WRITE32(access
->ac_supported
);
2703 WRITE32(access
->ac_resp_access
);
2709 static __be32
nfsd4_encode_bind_conn_to_session(struct nfsd4_compoundres
*resp
, __be32 nfserr
, struct nfsd4_bind_conn_to_session
*bcts
)
2714 RESERVE_SPACE(NFS4_MAX_SESSIONID_LEN
+ 8);
2715 WRITEMEM(bcts
->sessionid
.data
, NFS4_MAX_SESSIONID_LEN
);
2717 /* Sorry, we do not yet support RDMA over 4.1: */
2725 nfsd4_encode_close(struct nfsd4_compoundres
*resp
, __be32 nfserr
, struct nfsd4_close
*close
)
2728 nfsd4_encode_stateid(resp
, &close
->cl_stateid
);
2735 nfsd4_encode_commit(struct nfsd4_compoundres
*resp
, __be32 nfserr
, struct nfsd4_commit
*commit
)
2740 RESERVE_SPACE(NFS4_VERIFIER_SIZE
);
2741 WRITEMEM(commit
->co_verf
.data
, NFS4_VERIFIER_SIZE
);
2748 nfsd4_encode_create(struct nfsd4_compoundres
*resp
, __be32 nfserr
, struct nfsd4_create
*create
)
2754 write_cinfo(&p
, &create
->cr_cinfo
);
2756 WRITE32(create
->cr_bmval
[0]);
2757 WRITE32(create
->cr_bmval
[1]);
2764 nfsd4_encode_getattr(struct nfsd4_compoundres
*resp
, __be32 nfserr
, struct nfsd4_getattr
*getattr
)
2766 struct svc_fh
*fhp
= getattr
->ga_fhp
;
2772 buflen
= resp
->end
- resp
->p
- (COMPOUND_ERR_SLACK_SPACE
>> 2);
2773 nfserr
= nfsd4_encode_fattr(fhp
, fhp
->fh_export
, fhp
->fh_dentry
,
2774 &resp
->p
, buflen
, getattr
->ga_bmval
,
2780 nfsd4_encode_getfh(struct nfsd4_compoundres
*resp
, __be32 nfserr
, struct svc_fh
**fhpp
)
2782 struct svc_fh
*fhp
= *fhpp
;
2787 len
= fhp
->fh_handle
.fh_size
;
2788 RESERVE_SPACE(len
+ 4);
2790 WRITEMEM(&fhp
->fh_handle
.fh_base
, len
);
2797 * Including all fields other than the name, a LOCK4denied structure requires
2798 * 8(clientid) + 4(namelen) + 8(offset) + 8(length) + 4(type) = 32 bytes.
2801 nfsd4_encode_lock_denied(struct nfsd4_compoundres
*resp
, struct nfsd4_lock_denied
*ld
)
2803 struct xdr_netobj
*conf
= &ld
->ld_owner
;
2806 RESERVE_SPACE(32 + XDR_LEN(conf
->len
));
2807 WRITE64(ld
->ld_start
);
2808 WRITE64(ld
->ld_length
);
2809 WRITE32(ld
->ld_type
);
2811 WRITEMEM(&ld
->ld_clientid
, 8);
2813 WRITEMEM(conf
->data
, conf
->len
);
2815 } else { /* non - nfsv4 lock in conflict, no clientid nor owner */
2816 WRITE64((u64
)0); /* clientid */
2817 WRITE32(0); /* length of owner name */
2823 nfsd4_encode_lock(struct nfsd4_compoundres
*resp
, __be32 nfserr
, struct nfsd4_lock
*lock
)
2826 nfsd4_encode_stateid(resp
, &lock
->lk_resp_stateid
);
2827 else if (nfserr
== nfserr_denied
)
2828 nfsd4_encode_lock_denied(resp
, &lock
->lk_denied
);
2834 nfsd4_encode_lockt(struct nfsd4_compoundres
*resp
, __be32 nfserr
, struct nfsd4_lockt
*lockt
)
2836 if (nfserr
== nfserr_denied
)
2837 nfsd4_encode_lock_denied(resp
, &lockt
->lt_denied
);
2842 nfsd4_encode_locku(struct nfsd4_compoundres
*resp
, __be32 nfserr
, struct nfsd4_locku
*locku
)
2845 nfsd4_encode_stateid(resp
, &locku
->lu_stateid
);
2852 nfsd4_encode_link(struct nfsd4_compoundres
*resp
, __be32 nfserr
, struct nfsd4_link
*link
)
2858 write_cinfo(&p
, &link
->li_cinfo
);
2866 nfsd4_encode_open(struct nfsd4_compoundres
*resp
, __be32 nfserr
, struct nfsd4_open
*open
)
2873 nfsd4_encode_stateid(resp
, &open
->op_stateid
);
2875 write_cinfo(&p
, &open
->op_cinfo
);
2876 WRITE32(open
->op_rflags
);
2878 WRITE32(open
->op_bmval
[0]);
2879 WRITE32(open
->op_bmval
[1]);
2880 WRITE32(open
->op_delegate_type
);
2883 switch (open
->op_delegate_type
) {
2884 case NFS4_OPEN_DELEGATE_NONE
:
2886 case NFS4_OPEN_DELEGATE_READ
:
2887 nfsd4_encode_stateid(resp
, &open
->op_delegate_stateid
);
2889 WRITE32(open
->op_recall
);
2892 * TODO: ACE's in delegations
2894 WRITE32(NFS4_ACE_ACCESS_ALLOWED_ACE_TYPE
);
2897 WRITE32(0); /* XXX: is NULL principal ok? */
2900 case NFS4_OPEN_DELEGATE_WRITE
:
2901 nfsd4_encode_stateid(resp
, &open
->op_delegate_stateid
);
2906 * TODO: space_limit's in delegations
2908 WRITE32(NFS4_LIMIT_SIZE
);
2913 * TODO: ACE's in delegations
2915 WRITE32(NFS4_ACE_ACCESS_ALLOWED_ACE_TYPE
);
2918 WRITE32(0); /* XXX: is NULL principal ok? */
2921 case NFS4_OPEN_DELEGATE_NONE_EXT
: /* 4.1 */
2922 switch (open
->op_why_no_deleg
) {
2923 case WND4_CONTENTION
:
2926 WRITE32(open
->op_why_no_deleg
);
2927 WRITE32(0); /* deleg signaling not supported yet */
2931 WRITE32(open
->op_why_no_deleg
);
2938 /* XXX save filehandle here */
2944 nfsd4_encode_open_confirm(struct nfsd4_compoundres
*resp
, __be32 nfserr
, struct nfsd4_open_confirm
*oc
)
2947 nfsd4_encode_stateid(resp
, &oc
->oc_resp_stateid
);
2953 nfsd4_encode_open_downgrade(struct nfsd4_compoundres
*resp
, __be32 nfserr
, struct nfsd4_open_downgrade
*od
)
2956 nfsd4_encode_stateid(resp
, &od
->od_stateid
);
2962 nfsd4_encode_read(struct nfsd4_compoundres
*resp
, __be32 nfserr
,
2963 struct nfsd4_read
*read
)
2968 unsigned long maxcount
;
2974 if (resp
->xbuf
->page_len
)
2975 return nfserr_resource
;
2977 RESERVE_SPACE(8); /* eof flag and byte count */
2979 maxcount
= svc_max_payload(resp
->rqstp
);
2980 if (maxcount
> read
->rd_length
)
2981 maxcount
= read
->rd_length
;
2986 page
= *(resp
->rqstp
->rq_next_page
);
2987 if (!page
) { /* ran out of pages */
2991 resp
->rqstp
->rq_vec
[v
].iov_base
= page_address(page
);
2992 resp
->rqstp
->rq_vec
[v
].iov_len
=
2993 len
< PAGE_SIZE
? len
: PAGE_SIZE
;
2994 resp
->rqstp
->rq_next_page
++;
3000 nfserr
= nfsd_read_file(read
->rd_rqstp
, read
->rd_fhp
, read
->rd_filp
,
3001 read
->rd_offset
, resp
->rqstp
->rq_vec
, read
->rd_vlen
,
3006 eof
= (read
->rd_offset
+ maxcount
>=
3007 read
->rd_fhp
->fh_dentry
->d_inode
->i_size
);
3012 resp
->xbuf
->head
[0].iov_len
= (char*)p
3013 - (char*)resp
->xbuf
->head
[0].iov_base
;
3014 resp
->xbuf
->page_len
= maxcount
;
3016 /* Use rest of head for padding and remaining ops: */
3017 resp
->xbuf
->tail
[0].iov_base
= p
;
3018 resp
->xbuf
->tail
[0].iov_len
= 0;
3022 resp
->xbuf
->tail
[0].iov_base
+= maxcount
&3;
3023 resp
->xbuf
->tail
[0].iov_len
= 4 - (maxcount
&3);
3030 nfsd4_encode_readlink(struct nfsd4_compoundres
*resp
, __be32 nfserr
, struct nfsd4_readlink
*readlink
)
3038 if (resp
->xbuf
->page_len
)
3039 return nfserr_resource
;
3040 if (!*resp
->rqstp
->rq_next_page
)
3041 return nfserr_resource
;
3043 page
= page_address(*(resp
->rqstp
->rq_next_page
++));
3045 maxcount
= PAGE_SIZE
;
3049 * XXX: By default, the ->readlink() VFS op will truncate symlinks
3050 * if they would overflow the buffer. Is this kosher in NFSv4? If
3051 * not, one easy fix is: if ->readlink() precisely fills the buffer,
3052 * assume that truncation occurred, and return NFS4ERR_RESOURCE.
3054 nfserr
= nfsd_readlink(readlink
->rl_rqstp
, readlink
->rl_fhp
, page
, &maxcount
);
3055 if (nfserr
== nfserr_isdir
)
3056 return nfserr_inval
;
3062 resp
->xbuf
->head
[0].iov_len
= (char*)p
3063 - (char*)resp
->xbuf
->head
[0].iov_base
;
3064 resp
->xbuf
->page_len
= maxcount
;
3066 /* Use rest of head for padding and remaining ops: */
3067 resp
->xbuf
->tail
[0].iov_base
= p
;
3068 resp
->xbuf
->tail
[0].iov_len
= 0;
3072 resp
->xbuf
->tail
[0].iov_base
+= maxcount
&3;
3073 resp
->xbuf
->tail
[0].iov_len
= 4 - (maxcount
&3);
3080 nfsd4_encode_readdir(struct nfsd4_compoundres
*resp
, __be32 nfserr
, struct nfsd4_readdir
*readdir
)
3084 __be32
*page
, *savep
, *tailbase
;
3089 if (resp
->xbuf
->page_len
)
3090 return nfserr_resource
;
3091 if (!*resp
->rqstp
->rq_next_page
)
3092 return nfserr_resource
;
3094 RESERVE_SPACE(NFS4_VERIFIER_SIZE
);
3097 /* XXX: Following NFSv3, we ignore the READDIR verifier for now. */
3101 resp
->xbuf
->head
[0].iov_len
= ((char*)resp
->p
) - (char*)resp
->xbuf
->head
[0].iov_base
;
3104 maxcount
= PAGE_SIZE
;
3105 if (maxcount
> readdir
->rd_maxcount
)
3106 maxcount
= readdir
->rd_maxcount
;
3109 * Convert from bytes to words, account for the two words already
3110 * written, make sure to leave two words at the end for the next
3111 * pointer and eof field.
3113 maxcount
= (maxcount
>> 2) - 4;
3115 nfserr
= nfserr_toosmall
;
3119 page
= page_address(*(resp
->rqstp
->rq_next_page
++));
3120 readdir
->common
.err
= 0;
3121 readdir
->buflen
= maxcount
;
3122 readdir
->buffer
= page
;
3123 readdir
->offset
= NULL
;
3125 offset
= readdir
->rd_cookie
;
3126 nfserr
= nfsd_readdir(readdir
->rd_rqstp
, readdir
->rd_fhp
,
3128 &readdir
->common
, nfsd4_encode_dirent
);
3129 if (nfserr
== nfs_ok
&&
3130 readdir
->common
.err
== nfserr_toosmall
&&
3131 readdir
->buffer
== page
)
3132 nfserr
= nfserr_toosmall
;
3136 if (readdir
->offset
)
3137 xdr_encode_hyper(readdir
->offset
, offset
);
3139 p
= readdir
->buffer
;
3140 *p
++ = 0; /* no more entries */
3141 *p
++ = htonl(readdir
->common
.err
== nfserr_eof
);
3142 resp
->xbuf
->page_len
= ((char*)p
) -
3143 (char*)page_address(*(resp
->rqstp
->rq_next_page
-1));
3145 /* Use rest of head for padding and remaining ops: */
3146 resp
->xbuf
->tail
[0].iov_base
= tailbase
;
3147 resp
->xbuf
->tail
[0].iov_len
= 0;
3148 resp
->p
= resp
->xbuf
->tail
[0].iov_base
;
3149 resp
->end
= resp
->p
+ (PAGE_SIZE
- resp
->xbuf
->head
[0].iov_len
)/4;
3159 nfsd4_encode_remove(struct nfsd4_compoundres
*resp
, __be32 nfserr
, struct nfsd4_remove
*remove
)
3165 write_cinfo(&p
, &remove
->rm_cinfo
);
3172 nfsd4_encode_rename(struct nfsd4_compoundres
*resp
, __be32 nfserr
, struct nfsd4_rename
*rename
)
3178 write_cinfo(&p
, &rename
->rn_sinfo
);
3179 write_cinfo(&p
, &rename
->rn_tinfo
);
3186 nfsd4_do_encode_secinfo(struct nfsd4_compoundres
*resp
,
3187 __be32 nfserr
, struct svc_export
*exp
)
3189 u32 i
, nflavs
, supported
;
3190 struct exp_flavor_info
*flavs
;
3191 struct exp_flavor_info def_flavs
[2];
3192 __be32
*p
, *flavorsp
;
3193 static bool report
= true;
3197 if (exp
->ex_nflavors
) {
3198 flavs
= exp
->ex_flavors
;
3199 nflavs
= exp
->ex_nflavors
;
3200 } else { /* Handling of some defaults in absence of real secinfo: */
3202 if (exp
->ex_client
->flavour
->flavour
== RPC_AUTH_UNIX
) {
3204 flavs
[0].pseudoflavor
= RPC_AUTH_UNIX
;
3205 flavs
[1].pseudoflavor
= RPC_AUTH_NULL
;
3206 } else if (exp
->ex_client
->flavour
->flavour
== RPC_AUTH_GSS
) {
3208 flavs
[0].pseudoflavor
3209 = svcauth_gss_flavor(exp
->ex_client
);
3212 flavs
[0].pseudoflavor
3213 = exp
->ex_client
->flavour
->flavour
;
3219 flavorsp
= p
++; /* to be backfilled later */
3222 for (i
= 0; i
< nflavs
; i
++) {
3223 rpc_authflavor_t pf
= flavs
[i
].pseudoflavor
;
3224 struct rpcsec_gss_info info
;
3226 if (rpcauth_get_gssinfo(pf
, &info
) == 0) {
3228 RESERVE_SPACE(4 + 4 + info
.oid
.len
+ 4 + 4);
3229 WRITE32(RPC_AUTH_GSS
);
3230 WRITE32(info
.oid
.len
);
3231 WRITEMEM(info
.oid
.data
, info
.oid
.len
);
3233 WRITE32(info
.service
);
3235 } else if (pf
< RPC_AUTH_MAXFLAVOR
) {
3242 pr_warn("NFS: SECINFO: security flavor %u "
3243 "is not supported\n", pf
);
3247 if (nflavs
!= supported
)
3249 *flavorsp
= htonl(supported
);
3258 nfsd4_encode_secinfo(struct nfsd4_compoundres
*resp
, __be32 nfserr
,
3259 struct nfsd4_secinfo
*secinfo
)
3261 return nfsd4_do_encode_secinfo(resp
, nfserr
, secinfo
->si_exp
);
3265 nfsd4_encode_secinfo_no_name(struct nfsd4_compoundres
*resp
, __be32 nfserr
,
3266 struct nfsd4_secinfo_no_name
*secinfo
)
3268 return nfsd4_do_encode_secinfo(resp
, nfserr
, secinfo
->sin_exp
);
3272 * The SETATTR encode routine is special -- it always encodes a bitmap,
3273 * regardless of the error status.
3276 nfsd4_encode_setattr(struct nfsd4_compoundres
*resp
, __be32 nfserr
, struct nfsd4_setattr
*setattr
)
3289 WRITE32(setattr
->sa_bmval
[0]);
3290 WRITE32(setattr
->sa_bmval
[1]);
3291 WRITE32(setattr
->sa_bmval
[2]);
3298 nfsd4_encode_setclientid(struct nfsd4_compoundres
*resp
, __be32 nfserr
, struct nfsd4_setclientid
*scd
)
3303 RESERVE_SPACE(8 + NFS4_VERIFIER_SIZE
);
3304 WRITEMEM(&scd
->se_clientid
, 8);
3305 WRITEMEM(&scd
->se_confirm
, NFS4_VERIFIER_SIZE
);
3308 else if (nfserr
== nfserr_clid_inuse
) {
3318 nfsd4_encode_write(struct nfsd4_compoundres
*resp
, __be32 nfserr
, struct nfsd4_write
*write
)
3324 WRITE32(write
->wr_bytes_written
);
3325 WRITE32(write
->wr_how_written
);
3326 WRITEMEM(write
->wr_verifier
.data
, NFS4_VERIFIER_SIZE
);
3332 static const u32 nfs4_minimal_spo_must_enforce
[2] = {
3333 [1] = 1 << (OP_BIND_CONN_TO_SESSION
- 32) |
3334 1 << (OP_EXCHANGE_ID
- 32) |
3335 1 << (OP_CREATE_SESSION
- 32) |
3336 1 << (OP_DESTROY_SESSION
- 32) |
3337 1 << (OP_DESTROY_CLIENTID
- 32)
3341 nfsd4_encode_exchange_id(struct nfsd4_compoundres
*resp
, __be32 nfserr
,
3342 struct nfsd4_exchange_id
*exid
)
3348 int server_scope_sz
;
3349 uint64_t minor_id
= 0;
3354 major_id
= utsname()->nodename
;
3355 major_id_sz
= strlen(major_id
);
3356 server_scope
= utsname()->nodename
;
3357 server_scope_sz
= strlen(server_scope
);
3360 8 /* eir_clientid */ +
3361 4 /* eir_sequenceid */ +
3363 4 /* spr_how (SP4_NONE) */ +
3364 8 /* so_minor_id */ +
3365 4 /* so_major_id.len */ +
3366 (XDR_QUADLEN(major_id_sz
) * 4) +
3367 4 /* eir_server_scope.len */ +
3368 (XDR_QUADLEN(server_scope_sz
) * 4) +
3369 4 /* eir_server_impl_id.count (0) */);
3371 WRITEMEM(&exid
->clientid
, 8);
3372 WRITE32(exid
->seqid
);
3373 WRITE32(exid
->flags
);
3375 /* state_protect4_r. Currently only support SP4_NONE */
3376 BUG_ON(exid
->spa_how
!= SP4_NONE
);
3377 WRITE32(exid
->spa_how
);
3378 switch (exid
->spa_how
) {
3382 /* spo_must_enforce bitmap: */
3384 WRITE32(nfs4_minimal_spo_must_enforce
[0]);
3385 WRITE32(nfs4_minimal_spo_must_enforce
[1]);
3386 /* empty spo_must_allow bitmap: */
3393 /* The server_owner struct */
3394 WRITE64(minor_id
); /* Minor id */
3396 WRITE32(major_id_sz
);
3397 WRITEMEM(major_id
, major_id_sz
);
3400 WRITE32(server_scope_sz
);
3401 WRITEMEM(server_scope
, server_scope_sz
);
3403 /* Implementation id */
3404 WRITE32(0); /* zero length nfs_impl_id4 array */
3410 nfsd4_encode_create_session(struct nfsd4_compoundres
*resp
, __be32 nfserr
,
3411 struct nfsd4_create_session
*sess
)
3419 WRITEMEM(sess
->sessionid
.data
, NFS4_MAX_SESSIONID_LEN
);
3420 WRITE32(sess
->seqid
);
3421 WRITE32(sess
->flags
);
3425 WRITE32(0); /* headerpadsz */
3426 WRITE32(sess
->fore_channel
.maxreq_sz
);
3427 WRITE32(sess
->fore_channel
.maxresp_sz
);
3428 WRITE32(sess
->fore_channel
.maxresp_cached
);
3429 WRITE32(sess
->fore_channel
.maxops
);
3430 WRITE32(sess
->fore_channel
.maxreqs
);
3431 WRITE32(sess
->fore_channel
.nr_rdma_attrs
);
3434 if (sess
->fore_channel
.nr_rdma_attrs
) {
3436 WRITE32(sess
->fore_channel
.rdma_attrs
);
3441 WRITE32(0); /* headerpadsz */
3442 WRITE32(sess
->back_channel
.maxreq_sz
);
3443 WRITE32(sess
->back_channel
.maxresp_sz
);
3444 WRITE32(sess
->back_channel
.maxresp_cached
);
3445 WRITE32(sess
->back_channel
.maxops
);
3446 WRITE32(sess
->back_channel
.maxreqs
);
3447 WRITE32(sess
->back_channel
.nr_rdma_attrs
);
3450 if (sess
->back_channel
.nr_rdma_attrs
) {
3452 WRITE32(sess
->back_channel
.rdma_attrs
);
3459 nfsd4_encode_destroy_session(struct nfsd4_compoundres
*resp
, __be32 nfserr
,
3460 struct nfsd4_destroy_session
*destroy_session
)
3466 nfsd4_encode_free_stateid(struct nfsd4_compoundres
*resp
, __be32 nfserr
,
3467 struct nfsd4_free_stateid
*free_stateid
)
3481 nfsd4_encode_sequence(struct nfsd4_compoundres
*resp
, __be32 nfserr
,
3482 struct nfsd4_sequence
*seq
)
3489 RESERVE_SPACE(NFS4_MAX_SESSIONID_LEN
+ 20);
3490 WRITEMEM(seq
->sessionid
.data
, NFS4_MAX_SESSIONID_LEN
);
3491 WRITE32(seq
->seqid
);
3492 WRITE32(seq
->slotid
);
3493 /* Note slotid's are numbered from zero: */
3494 WRITE32(seq
->maxslots
- 1); /* sr_highest_slotid */
3495 WRITE32(seq
->maxslots
- 1); /* sr_target_highest_slotid */
3496 WRITE32(seq
->status_flags
);
3499 resp
->cstate
.datap
= p
; /* DRC cache data pointer */
3504 nfsd4_encode_test_stateid(struct nfsd4_compoundres
*resp
, __be32 nfserr
,
3505 struct nfsd4_test_stateid
*test_stateid
)
3507 struct nfsd4_test_stateid_id
*stateid
, *next
;
3510 RESERVE_SPACE(4 + (4 * test_stateid
->ts_num_ids
));
3511 *p
++ = htonl(test_stateid
->ts_num_ids
);
3513 list_for_each_entry_safe(stateid
, next
, &test_stateid
->ts_stateid_list
, ts_id_list
) {
3514 *p
++ = stateid
->ts_id_status
;
3522 nfsd4_encode_noop(struct nfsd4_compoundres
*resp
, __be32 nfserr
, void *p
)
3527 typedef __be32(* nfsd4_enc
)(struct nfsd4_compoundres
*, __be32
, void *);
3530 * Note: nfsd4_enc_ops vector is shared for v4.0 and v4.1
3531 * since we don't need to filter out obsolete ops as this is
3532 * done in the decoding phase.
3534 static nfsd4_enc nfsd4_enc_ops
[] = {
3535 [OP_ACCESS
] = (nfsd4_enc
)nfsd4_encode_access
,
3536 [OP_CLOSE
] = (nfsd4_enc
)nfsd4_encode_close
,
3537 [OP_COMMIT
] = (nfsd4_enc
)nfsd4_encode_commit
,
3538 [OP_CREATE
] = (nfsd4_enc
)nfsd4_encode_create
,
3539 [OP_DELEGPURGE
] = (nfsd4_enc
)nfsd4_encode_noop
,
3540 [OP_DELEGRETURN
] = (nfsd4_enc
)nfsd4_encode_noop
,
3541 [OP_GETATTR
] = (nfsd4_enc
)nfsd4_encode_getattr
,
3542 [OP_GETFH
] = (nfsd4_enc
)nfsd4_encode_getfh
,
3543 [OP_LINK
] = (nfsd4_enc
)nfsd4_encode_link
,
3544 [OP_LOCK
] = (nfsd4_enc
)nfsd4_encode_lock
,
3545 [OP_LOCKT
] = (nfsd4_enc
)nfsd4_encode_lockt
,
3546 [OP_LOCKU
] = (nfsd4_enc
)nfsd4_encode_locku
,
3547 [OP_LOOKUP
] = (nfsd4_enc
)nfsd4_encode_noop
,
3548 [OP_LOOKUPP
] = (nfsd4_enc
)nfsd4_encode_noop
,
3549 [OP_NVERIFY
] = (nfsd4_enc
)nfsd4_encode_noop
,
3550 [OP_OPEN
] = (nfsd4_enc
)nfsd4_encode_open
,
3551 [OP_OPENATTR
] = (nfsd4_enc
)nfsd4_encode_noop
,
3552 [OP_OPEN_CONFIRM
] = (nfsd4_enc
)nfsd4_encode_open_confirm
,
3553 [OP_OPEN_DOWNGRADE
] = (nfsd4_enc
)nfsd4_encode_open_downgrade
,
3554 [OP_PUTFH
] = (nfsd4_enc
)nfsd4_encode_noop
,
3555 [OP_PUTPUBFH
] = (nfsd4_enc
)nfsd4_encode_noop
,
3556 [OP_PUTROOTFH
] = (nfsd4_enc
)nfsd4_encode_noop
,
3557 [OP_READ
] = (nfsd4_enc
)nfsd4_encode_read
,
3558 [OP_READDIR
] = (nfsd4_enc
)nfsd4_encode_readdir
,
3559 [OP_READLINK
] = (nfsd4_enc
)nfsd4_encode_readlink
,
3560 [OP_REMOVE
] = (nfsd4_enc
)nfsd4_encode_remove
,
3561 [OP_RENAME
] = (nfsd4_enc
)nfsd4_encode_rename
,
3562 [OP_RENEW
] = (nfsd4_enc
)nfsd4_encode_noop
,
3563 [OP_RESTOREFH
] = (nfsd4_enc
)nfsd4_encode_noop
,
3564 [OP_SAVEFH
] = (nfsd4_enc
)nfsd4_encode_noop
,
3565 [OP_SECINFO
] = (nfsd4_enc
)nfsd4_encode_secinfo
,
3566 [OP_SETATTR
] = (nfsd4_enc
)nfsd4_encode_setattr
,
3567 [OP_SETCLIENTID
] = (nfsd4_enc
)nfsd4_encode_setclientid
,
3568 [OP_SETCLIENTID_CONFIRM
] = (nfsd4_enc
)nfsd4_encode_noop
,
3569 [OP_VERIFY
] = (nfsd4_enc
)nfsd4_encode_noop
,
3570 [OP_WRITE
] = (nfsd4_enc
)nfsd4_encode_write
,
3571 [OP_RELEASE_LOCKOWNER
] = (nfsd4_enc
)nfsd4_encode_noop
,
3573 /* NFSv4.1 operations */
3574 [OP_BACKCHANNEL_CTL
] = (nfsd4_enc
)nfsd4_encode_noop
,
3575 [OP_BIND_CONN_TO_SESSION
] = (nfsd4_enc
)nfsd4_encode_bind_conn_to_session
,
3576 [OP_EXCHANGE_ID
] = (nfsd4_enc
)nfsd4_encode_exchange_id
,
3577 [OP_CREATE_SESSION
] = (nfsd4_enc
)nfsd4_encode_create_session
,
3578 [OP_DESTROY_SESSION
] = (nfsd4_enc
)nfsd4_encode_destroy_session
,
3579 [OP_FREE_STATEID
] = (nfsd4_enc
)nfsd4_encode_free_stateid
,
3580 [OP_GET_DIR_DELEGATION
] = (nfsd4_enc
)nfsd4_encode_noop
,
3581 [OP_GETDEVICEINFO
] = (nfsd4_enc
)nfsd4_encode_noop
,
3582 [OP_GETDEVICELIST
] = (nfsd4_enc
)nfsd4_encode_noop
,
3583 [OP_LAYOUTCOMMIT
] = (nfsd4_enc
)nfsd4_encode_noop
,
3584 [OP_LAYOUTGET
] = (nfsd4_enc
)nfsd4_encode_noop
,
3585 [OP_LAYOUTRETURN
] = (nfsd4_enc
)nfsd4_encode_noop
,
3586 [OP_SECINFO_NO_NAME
] = (nfsd4_enc
)nfsd4_encode_secinfo_no_name
,
3587 [OP_SEQUENCE
] = (nfsd4_enc
)nfsd4_encode_sequence
,
3588 [OP_SET_SSV
] = (nfsd4_enc
)nfsd4_encode_noop
,
3589 [OP_TEST_STATEID
] = (nfsd4_enc
)nfsd4_encode_test_stateid
,
3590 [OP_WANT_DELEGATION
] = (nfsd4_enc
)nfsd4_encode_noop
,
3591 [OP_DESTROY_CLIENTID
] = (nfsd4_enc
)nfsd4_encode_noop
,
3592 [OP_RECLAIM_COMPLETE
] = (nfsd4_enc
)nfsd4_encode_noop
,
3596 * Calculate the total amount of memory that the compound response has taken
3597 * after encoding the current operation with pad.
3599 * pad: if operation is non-idempotent, pad was calculate by op_rsize_bop()
3600 * which was specified at nfsd4_operation, else pad is zero.
3602 * Compare this length to the session se_fmaxresp_sz and se_fmaxresp_cached.
3604 * Our se_fmaxresp_cached will always be a multiple of PAGE_SIZE, and so
3605 * will be at least a page and will therefore hold the xdr_buf head.
3607 __be32
nfsd4_check_resp_size(struct nfsd4_compoundres
*resp
, u32 pad
)
3609 struct xdr_buf
*xb
= &resp
->rqstp
->rq_res
;
3610 struct nfsd4_session
*session
= NULL
;
3611 struct nfsd4_slot
*slot
= resp
->cstate
.slot
;
3612 u32 length
, tlen
= 0;
3614 if (!nfsd4_has_session(&resp
->cstate
))
3617 session
= resp
->cstate
.session
;
3618 if (session
== NULL
)
3621 if (xb
->page_len
== 0) {
3622 length
= (char *)resp
->p
- (char *)xb
->head
[0].iov_base
+ pad
;
3624 if (xb
->tail
[0].iov_base
&& xb
->tail
[0].iov_len
> 0)
3625 tlen
= (char *)resp
->p
- (char *)xb
->tail
[0].iov_base
;
3627 length
= xb
->head
[0].iov_len
+ xb
->page_len
+ tlen
+ pad
;
3629 dprintk("%s length %u, xb->page_len %u tlen %u pad %u\n", __func__
,
3630 length
, xb
->page_len
, tlen
, pad
);
3632 if (length
> session
->se_fchannel
.maxresp_sz
)
3633 return nfserr_rep_too_big
;
3635 if ((slot
->sl_flags
& NFSD4_SLOT_CACHETHIS
) &&
3636 length
> session
->se_fchannel
.maxresp_cached
)
3637 return nfserr_rep_too_big_to_cache
;
3643 nfsd4_encode_operation(struct nfsd4_compoundres
*resp
, struct nfsd4_op
*op
)
3645 struct nfs4_stateowner
*so
= resp
->cstate
.replay_owner
;
3651 statp
= p
++; /* to be backfilled at the end */
3654 if (op
->opnum
== OP_ILLEGAL
)
3656 BUG_ON(op
->opnum
< 0 || op
->opnum
>= ARRAY_SIZE(nfsd4_enc_ops
) ||
3657 !nfsd4_enc_ops
[op
->opnum
]);
3658 op
->status
= nfsd4_enc_ops
[op
->opnum
](resp
, op
->status
, &op
->u
);
3659 /* nfsd4_check_drc_limit guarantees enough room for error status */
3661 op
->status
= nfsd4_check_resp_size(resp
, 0);
3663 so
->so_replay
.rp_status
= op
->status
;
3664 so
->so_replay
.rp_buflen
= (char *)resp
->p
- (char *)(statp
+1);
3665 memcpy(so
->so_replay
.rp_buf
, statp
+1, so
->so_replay
.rp_buflen
);
3669 * Note: We write the status directly, instead of using WRITE32(),
3670 * since it is already in network byte order.
3672 *statp
= op
->status
;
3676 * Encode the reply stored in the stateowner reply cache
3678 * XDR note: do not encode rp->rp_buflen: the buffer contains the
3679 * previously sent already encoded operation.
3681 * called with nfs4_lock_state() held
3684 nfsd4_encode_replay(struct nfsd4_compoundres
*resp
, struct nfsd4_op
*op
)
3687 struct nfs4_replay
*rp
= op
->replay
;
3693 *p
++ = rp
->rp_status
; /* already xdr'ed */
3696 RESERVE_SPACE(rp
->rp_buflen
);
3697 WRITEMEM(rp
->rp_buf
, rp
->rp_buflen
);
3702 nfs4svc_encode_voidres(struct svc_rqst
*rqstp
, __be32
*p
, void *dummy
)
3704 return xdr_ressize_check(rqstp
, p
);
3707 int nfsd4_release_compoundargs(void *rq
, __be32
*p
, void *resp
)
3709 struct svc_rqst
*rqstp
= rq
;
3710 struct nfsd4_compoundargs
*args
= rqstp
->rq_argp
;
3712 if (args
->ops
!= args
->iops
) {
3714 args
->ops
= args
->iops
;
3718 while (args
->to_free
) {
3719 struct tmpbuf
*tb
= args
->to_free
;
3720 args
->to_free
= tb
->next
;
3721 tb
->release(tb
->buf
);
3728 nfs4svc_decode_compoundargs(struct svc_rqst
*rqstp
, __be32
*p
, struct nfsd4_compoundargs
*args
)
3731 args
->end
= rqstp
->rq_arg
.head
[0].iov_base
+ rqstp
->rq_arg
.head
[0].iov_len
;
3732 args
->pagelist
= rqstp
->rq_arg
.pages
;
3733 args
->pagelen
= rqstp
->rq_arg
.page_len
;
3735 args
->to_free
= NULL
;
3736 args
->ops
= args
->iops
;
3737 args
->rqstp
= rqstp
;
3739 return !nfsd4_decode_compound(args
);
3743 nfs4svc_encode_compoundres(struct svc_rqst
*rqstp
, __be32
*p
, struct nfsd4_compoundres
*resp
)
3746 * All that remains is to write the tag and operation count...
3748 struct nfsd4_compound_state
*cs
= &resp
->cstate
;
3751 *p
++ = htonl(resp
->taglen
);
3752 memcpy(p
, resp
->tag
, resp
->taglen
);
3753 p
+= XDR_QUADLEN(resp
->taglen
);
3754 *p
++ = htonl(resp
->opcnt
);
3756 if (rqstp
->rq_res
.page_len
)
3757 iov
= &rqstp
->rq_res
.tail
[0];
3759 iov
= &rqstp
->rq_res
.head
[0];
3760 iov
->iov_len
= ((char*)resp
->p
) - (char*)iov
->iov_base
;
3761 BUG_ON(iov
->iov_len
> PAGE_SIZE
);
3762 if (nfsd4_has_session(cs
)) {
3763 struct nfsd_net
*nn
= net_generic(SVC_NET(rqstp
), nfsd_net_id
);
3764 struct nfs4_client
*clp
= cs
->session
->se_client
;
3765 if (cs
->status
!= nfserr_replay_cache
) {
3766 nfsd4_store_cache_entry(resp
);
3767 cs
->slot
->sl_flags
&= ~NFSD4_SLOT_INUSE
;
3769 /* Renew the clientid on success and on replay */
3770 spin_lock(&nn
->client_lock
);
3771 nfsd4_put_session(cs
->session
);
3772 spin_unlock(&nn
->client_lock
);
3773 put_client_renew(clp
);