4 * Client-side procedure declarations for NFSv4.
6 * Copyright (c) 2002 The Regents of the University of Michigan.
9 * Kendrick Smith <kmsmith@umich.edu>
10 * Andy Adamson <andros@umich.edu>
12 * Redistribution and use in source and binary forms, with or without
13 * modification, are permitted provided that the following conditions
16 * 1. Redistributions of source code must retain the above copyright
17 * notice, this list of conditions and the following disclaimer.
18 * 2. Redistributions in binary form must reproduce the above copyright
19 * notice, this list of conditions and the following disclaimer in the
20 * documentation and/or other materials provided with the distribution.
21 * 3. Neither the name of the University nor the names of its
22 * contributors may be used to endorse or promote products derived
23 * from this software without specific prior written permission.
25 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
26 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
27 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
28 * DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
29 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
30 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
31 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
32 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
33 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
34 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
35 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
39 #include <linux/delay.h>
40 #include <linux/errno.h>
41 #include <linux/file.h>
42 #include <linux/string.h>
43 #include <linux/ratelimit.h>
44 #include <linux/printk.h>
45 #include <linux/slab.h>
46 #include <linux/sunrpc/clnt.h>
47 #include <linux/nfs.h>
48 #include <linux/nfs4.h>
49 #include <linux/nfs_fs.h>
50 #include <linux/nfs_page.h>
51 #include <linux/nfs_mount.h>
52 #include <linux/namei.h>
53 #include <linux/mount.h>
54 #include <linux/module.h>
55 #include <linux/xattr.h>
56 #include <linux/utsname.h>
57 #include <linux/freezer.h>
60 #include "delegation.h"
66 #include "nfs4idmap.h"
67 #include "nfs4session.h"
70 #include "nfs4trace.h"
72 #define NFSDBG_FACILITY NFSDBG_PROC
74 #define NFS4_POLL_RETRY_MIN (HZ/10)
75 #define NFS4_POLL_RETRY_MAX (15*HZ)
77 /* file attributes which can be mapped to nfs attributes */
78 #define NFS4_VALID_ATTRS (ATTR_MODE \
89 static int _nfs4_proc_open(struct nfs4_opendata
*data
);
90 static int _nfs4_recover_proc_open(struct nfs4_opendata
*data
);
91 static int nfs4_do_fsinfo(struct nfs_server
*, struct nfs_fh
*, struct nfs_fsinfo
*);
92 static void nfs_fixup_referral_attributes(struct nfs_fattr
*fattr
);
93 static int nfs4_proc_getattr(struct nfs_server
*, struct nfs_fh
*, struct nfs_fattr
*, struct nfs4_label
*label
);
94 static int _nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
, struct nfs4_label
*label
);
95 static int nfs4_do_setattr(struct inode
*inode
, struct rpc_cred
*cred
,
96 struct nfs_fattr
*fattr
, struct iattr
*sattr
,
97 struct nfs4_state
*state
, struct nfs4_label
*ilabel
,
98 struct nfs4_label
*olabel
);
99 #ifdef CONFIG_NFS_V4_1
100 static int nfs41_test_stateid(struct nfs_server
*, nfs4_stateid
*,
102 static int nfs41_free_stateid(struct nfs_server
*, nfs4_stateid
*,
106 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
107 static inline struct nfs4_label
*
108 nfs4_label_init_security(struct inode
*dir
, struct dentry
*dentry
,
109 struct iattr
*sattr
, struct nfs4_label
*label
)
116 if (nfs_server_capable(dir
, NFS_CAP_SECURITY_LABEL
) == 0)
119 err
= security_dentry_init_security(dentry
, sattr
->ia_mode
,
120 &dentry
->d_name
, (void **)&label
->label
, &label
->len
);
127 nfs4_label_release_security(struct nfs4_label
*label
)
130 security_release_secctx(label
->label
, label
->len
);
132 static inline u32
*nfs4_bitmask(struct nfs_server
*server
, struct nfs4_label
*label
)
135 return server
->attr_bitmask
;
137 return server
->attr_bitmask_nl
;
140 static inline struct nfs4_label
*
141 nfs4_label_init_security(struct inode
*dir
, struct dentry
*dentry
,
142 struct iattr
*sattr
, struct nfs4_label
*l
)
145 nfs4_label_release_security(struct nfs4_label
*label
)
148 nfs4_bitmask(struct nfs_server
*server
, struct nfs4_label
*label
)
149 { return server
->attr_bitmask
; }
152 /* Prevent leaks of NFSv4 errors into userland */
153 static int nfs4_map_errors(int err
)
158 case -NFS4ERR_RESOURCE
:
159 case -NFS4ERR_LAYOUTTRYLATER
:
160 case -NFS4ERR_RECALLCONFLICT
:
162 case -NFS4ERR_WRONGSEC
:
163 case -NFS4ERR_WRONG_CRED
:
165 case -NFS4ERR_BADOWNER
:
166 case -NFS4ERR_BADNAME
:
168 case -NFS4ERR_SHARE_DENIED
:
170 case -NFS4ERR_MINOR_VERS_MISMATCH
:
171 return -EPROTONOSUPPORT
;
172 case -NFS4ERR_FILE_OPEN
:
175 dprintk("%s could not handle NFSv4 error %d\n",
183 * This is our standard bitmap for GETATTR requests.
185 const u32 nfs4_fattr_bitmap
[3] = {
187 | FATTR4_WORD0_CHANGE
190 | FATTR4_WORD0_FILEID
,
192 | FATTR4_WORD1_NUMLINKS
194 | FATTR4_WORD1_OWNER_GROUP
195 | FATTR4_WORD1_RAWDEV
196 | FATTR4_WORD1_SPACE_USED
197 | FATTR4_WORD1_TIME_ACCESS
198 | FATTR4_WORD1_TIME_METADATA
199 | FATTR4_WORD1_TIME_MODIFY
200 | FATTR4_WORD1_MOUNTED_ON_FILEID
,
201 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
202 FATTR4_WORD2_SECURITY_LABEL
206 static const u32 nfs4_pnfs_open_bitmap
[3] = {
208 | FATTR4_WORD0_CHANGE
211 | FATTR4_WORD0_FILEID
,
213 | FATTR4_WORD1_NUMLINKS
215 | FATTR4_WORD1_OWNER_GROUP
216 | FATTR4_WORD1_RAWDEV
217 | FATTR4_WORD1_SPACE_USED
218 | FATTR4_WORD1_TIME_ACCESS
219 | FATTR4_WORD1_TIME_METADATA
220 | FATTR4_WORD1_TIME_MODIFY
,
221 FATTR4_WORD2_MDSTHRESHOLD
222 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
223 | FATTR4_WORD2_SECURITY_LABEL
227 static const u32 nfs4_open_noattr_bitmap
[3] = {
229 | FATTR4_WORD0_CHANGE
230 | FATTR4_WORD0_FILEID
,
233 const u32 nfs4_statfs_bitmap
[3] = {
234 FATTR4_WORD0_FILES_AVAIL
235 | FATTR4_WORD0_FILES_FREE
236 | FATTR4_WORD0_FILES_TOTAL
,
237 FATTR4_WORD1_SPACE_AVAIL
238 | FATTR4_WORD1_SPACE_FREE
239 | FATTR4_WORD1_SPACE_TOTAL
242 const u32 nfs4_pathconf_bitmap
[3] = {
244 | FATTR4_WORD0_MAXNAME
,
248 const u32 nfs4_fsinfo_bitmap
[3] = { FATTR4_WORD0_MAXFILESIZE
249 | FATTR4_WORD0_MAXREAD
250 | FATTR4_WORD0_MAXWRITE
251 | FATTR4_WORD0_LEASE_TIME
,
252 FATTR4_WORD1_TIME_DELTA
253 | FATTR4_WORD1_FS_LAYOUT_TYPES
,
254 FATTR4_WORD2_LAYOUT_BLKSIZE
255 | FATTR4_WORD2_CLONE_BLKSIZE
258 const u32 nfs4_fs_locations_bitmap
[3] = {
260 | FATTR4_WORD0_CHANGE
263 | FATTR4_WORD0_FILEID
264 | FATTR4_WORD0_FS_LOCATIONS
,
266 | FATTR4_WORD1_NUMLINKS
268 | FATTR4_WORD1_OWNER_GROUP
269 | FATTR4_WORD1_RAWDEV
270 | FATTR4_WORD1_SPACE_USED
271 | FATTR4_WORD1_TIME_ACCESS
272 | FATTR4_WORD1_TIME_METADATA
273 | FATTR4_WORD1_TIME_MODIFY
274 | FATTR4_WORD1_MOUNTED_ON_FILEID
,
277 static void nfs4_setup_readdir(u64 cookie
, __be32
*verifier
, struct dentry
*dentry
,
278 struct nfs4_readdir_arg
*readdir
)
283 readdir
->cookie
= cookie
;
284 memcpy(&readdir
->verifier
, verifier
, sizeof(readdir
->verifier
));
289 memset(&readdir
->verifier
, 0, sizeof(readdir
->verifier
));
294 * NFSv4 servers do not return entries for '.' and '..'
295 * Therefore, we fake these entries here. We let '.'
296 * have cookie 0 and '..' have cookie 1. Note that
297 * when talking to the server, we always send cookie 0
300 start
= p
= kmap_atomic(*readdir
->pages
);
303 *p
++ = xdr_one
; /* next */
304 *p
++ = xdr_zero
; /* cookie, first word */
305 *p
++ = xdr_one
; /* cookie, second word */
306 *p
++ = xdr_one
; /* entry len */
307 memcpy(p
, ".\0\0\0", 4); /* entry */
309 *p
++ = xdr_one
; /* bitmap length */
310 *p
++ = htonl(FATTR4_WORD0_FILEID
); /* bitmap */
311 *p
++ = htonl(8); /* attribute buffer length */
312 p
= xdr_encode_hyper(p
, NFS_FILEID(d_inode(dentry
)));
315 *p
++ = xdr_one
; /* next */
316 *p
++ = xdr_zero
; /* cookie, first word */
317 *p
++ = xdr_two
; /* cookie, second word */
318 *p
++ = xdr_two
; /* entry len */
319 memcpy(p
, "..\0\0", 4); /* entry */
321 *p
++ = xdr_one
; /* bitmap length */
322 *p
++ = htonl(FATTR4_WORD0_FILEID
); /* bitmap */
323 *p
++ = htonl(8); /* attribute buffer length */
324 p
= xdr_encode_hyper(p
, NFS_FILEID(d_inode(dentry
->d_parent
)));
326 readdir
->pgbase
= (char *)p
- (char *)start
;
327 readdir
->count
-= readdir
->pgbase
;
328 kunmap_atomic(start
);
331 static long nfs4_update_delay(long *timeout
)
335 return NFS4_POLL_RETRY_MAX
;
337 *timeout
= NFS4_POLL_RETRY_MIN
;
338 if (*timeout
> NFS4_POLL_RETRY_MAX
)
339 *timeout
= NFS4_POLL_RETRY_MAX
;
345 static int nfs4_delay(struct rpc_clnt
*clnt
, long *timeout
)
351 freezable_schedule_timeout_killable_unsafe(
352 nfs4_update_delay(timeout
));
353 if (fatal_signal_pending(current
))
358 /* This is the error handling routine for processes that are allowed
361 static int nfs4_do_handle_exception(struct nfs_server
*server
,
362 int errorcode
, struct nfs4_exception
*exception
)
364 struct nfs_client
*clp
= server
->nfs_client
;
365 struct nfs4_state
*state
= exception
->state
;
366 struct inode
*inode
= exception
->inode
;
369 exception
->delay
= 0;
370 exception
->recovering
= 0;
371 exception
->retry
= 0;
375 case -NFS4ERR_OPENMODE
:
376 case -NFS4ERR_DELEG_REVOKED
:
377 case -NFS4ERR_ADMIN_REVOKED
:
378 case -NFS4ERR_BAD_STATEID
:
379 if (inode
&& nfs_async_inode_return_delegation(inode
,
381 goto wait_on_recovery
;
384 ret
= nfs4_schedule_stateid_recovery(server
, state
);
387 goto wait_on_recovery
;
388 case -NFS4ERR_EXPIRED
:
390 ret
= nfs4_schedule_stateid_recovery(server
, state
);
394 case -NFS4ERR_STALE_STATEID
:
395 case -NFS4ERR_STALE_CLIENTID
:
396 nfs4_schedule_lease_recovery(clp
);
397 goto wait_on_recovery
;
399 ret
= nfs4_schedule_migration_recovery(server
);
402 goto wait_on_recovery
;
403 case -NFS4ERR_LEASE_MOVED
:
404 nfs4_schedule_lease_moved_recovery(clp
);
405 goto wait_on_recovery
;
406 #if defined(CONFIG_NFS_V4_1)
407 case -NFS4ERR_BADSESSION
:
408 case -NFS4ERR_BADSLOT
:
409 case -NFS4ERR_BAD_HIGH_SLOT
:
410 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
411 case -NFS4ERR_DEADSESSION
:
412 case -NFS4ERR_SEQ_FALSE_RETRY
:
413 case -NFS4ERR_SEQ_MISORDERED
:
414 dprintk("%s ERROR: %d Reset session\n", __func__
,
416 nfs4_schedule_session_recovery(clp
->cl_session
, errorcode
);
417 goto wait_on_recovery
;
418 #endif /* defined(CONFIG_NFS_V4_1) */
419 case -NFS4ERR_FILE_OPEN
:
420 if (exception
->timeout
> HZ
) {
421 /* We have retried a decent amount, time to
428 nfs_inc_server_stats(server
, NFSIOS_DELAY
);
430 case -NFS4ERR_RECALLCONFLICT
:
431 exception
->delay
= 1;
434 case -NFS4ERR_RETRY_UNCACHED_REP
:
435 case -NFS4ERR_OLD_STATEID
:
436 exception
->retry
= 1;
438 case -NFS4ERR_BADOWNER
:
439 /* The following works around a Linux server bug! */
440 case -NFS4ERR_BADNAME
:
441 if (server
->caps
& NFS_CAP_UIDGID_NOMAP
) {
442 server
->caps
&= ~NFS_CAP_UIDGID_NOMAP
;
443 exception
->retry
= 1;
444 printk(KERN_WARNING
"NFS: v4 server %s "
445 "does not accept raw "
447 "Reenabling the idmapper.\n",
448 server
->nfs_client
->cl_hostname
);
451 /* We failed to handle the error */
452 return nfs4_map_errors(ret
);
454 exception
->recovering
= 1;
458 /* This is the error handling routine for processes that are allowed
461 int nfs4_handle_exception(struct nfs_server
*server
, int errorcode
, struct nfs4_exception
*exception
)
463 struct nfs_client
*clp
= server
->nfs_client
;
466 ret
= nfs4_do_handle_exception(server
, errorcode
, exception
);
467 if (exception
->delay
) {
468 ret
= nfs4_delay(server
->client
, &exception
->timeout
);
471 if (exception
->recovering
) {
472 ret
= nfs4_wait_clnt_recover(clp
);
473 if (test_bit(NFS_MIG_FAILED
, &server
->mig_status
))
480 exception
->retry
= 1;
485 nfs4_async_handle_exception(struct rpc_task
*task
, struct nfs_server
*server
,
486 int errorcode
, struct nfs4_exception
*exception
)
488 struct nfs_client
*clp
= server
->nfs_client
;
491 ret
= nfs4_do_handle_exception(server
, errorcode
, exception
);
492 if (exception
->delay
) {
493 rpc_delay(task
, nfs4_update_delay(&exception
->timeout
));
496 if (exception
->recovering
) {
497 rpc_sleep_on(&clp
->cl_rpcwaitq
, task
, NULL
);
498 if (test_bit(NFS4CLNT_MANAGER_RUNNING
, &clp
->cl_state
) == 0)
499 rpc_wake_up_queued_task(&clp
->cl_rpcwaitq
, task
);
502 if (test_bit(NFS_MIG_FAILED
, &server
->mig_status
))
507 exception
->retry
= 1;
512 nfs4_async_handle_error(struct rpc_task
*task
, struct nfs_server
*server
,
513 struct nfs4_state
*state
, long *timeout
)
515 struct nfs4_exception exception
= {
519 if (task
->tk_status
>= 0)
522 exception
.timeout
= *timeout
;
523 task
->tk_status
= nfs4_async_handle_exception(task
, server
,
526 if (exception
.delay
&& timeout
)
527 *timeout
= exception
.timeout
;
534 * Return 'true' if 'clp' is using an rpc_client that is integrity protected
535 * or 'false' otherwise.
537 static bool _nfs4_is_integrity_protected(struct nfs_client
*clp
)
539 rpc_authflavor_t flavor
= clp
->cl_rpcclient
->cl_auth
->au_flavor
;
541 if (flavor
== RPC_AUTH_GSS_KRB5I
||
542 flavor
== RPC_AUTH_GSS_KRB5P
)
548 static void do_renew_lease(struct nfs_client
*clp
, unsigned long timestamp
)
550 spin_lock(&clp
->cl_lock
);
551 if (time_before(clp
->cl_last_renewal
,timestamp
))
552 clp
->cl_last_renewal
= timestamp
;
553 spin_unlock(&clp
->cl_lock
);
556 static void renew_lease(const struct nfs_server
*server
, unsigned long timestamp
)
558 struct nfs_client
*clp
= server
->nfs_client
;
560 if (!nfs4_has_session(clp
))
561 do_renew_lease(clp
, timestamp
);
564 struct nfs4_call_sync_data
{
565 const struct nfs_server
*seq_server
;
566 struct nfs4_sequence_args
*seq_args
;
567 struct nfs4_sequence_res
*seq_res
;
570 void nfs4_init_sequence(struct nfs4_sequence_args
*args
,
571 struct nfs4_sequence_res
*res
, int cache_reply
)
573 args
->sa_slot
= NULL
;
574 args
->sa_cache_this
= cache_reply
;
575 args
->sa_privileged
= 0;
580 static void nfs4_set_sequence_privileged(struct nfs4_sequence_args
*args
)
582 args
->sa_privileged
= 1;
585 int nfs40_setup_sequence(struct nfs4_slot_table
*tbl
,
586 struct nfs4_sequence_args
*args
,
587 struct nfs4_sequence_res
*res
,
588 struct rpc_task
*task
)
590 struct nfs4_slot
*slot
;
592 /* slot already allocated? */
593 if (res
->sr_slot
!= NULL
)
596 spin_lock(&tbl
->slot_tbl_lock
);
597 if (nfs4_slot_tbl_draining(tbl
) && !args
->sa_privileged
)
600 slot
= nfs4_alloc_slot(tbl
);
602 if (slot
== ERR_PTR(-ENOMEM
))
603 task
->tk_timeout
= HZ
>> 2;
606 spin_unlock(&tbl
->slot_tbl_lock
);
608 args
->sa_slot
= slot
;
612 rpc_call_start(task
);
616 if (args
->sa_privileged
)
617 rpc_sleep_on_priority(&tbl
->slot_tbl_waitq
, task
,
618 NULL
, RPC_PRIORITY_PRIVILEGED
);
620 rpc_sleep_on(&tbl
->slot_tbl_waitq
, task
, NULL
);
621 spin_unlock(&tbl
->slot_tbl_lock
);
624 EXPORT_SYMBOL_GPL(nfs40_setup_sequence
);
626 static int nfs40_sequence_done(struct rpc_task
*task
,
627 struct nfs4_sequence_res
*res
)
629 struct nfs4_slot
*slot
= res
->sr_slot
;
630 struct nfs4_slot_table
*tbl
;
636 spin_lock(&tbl
->slot_tbl_lock
);
637 if (!nfs41_wake_and_assign_slot(tbl
, slot
))
638 nfs4_free_slot(tbl
, slot
);
639 spin_unlock(&tbl
->slot_tbl_lock
);
646 #if defined(CONFIG_NFS_V4_1)
648 static void nfs41_sequence_free_slot(struct nfs4_sequence_res
*res
)
650 struct nfs4_session
*session
;
651 struct nfs4_slot_table
*tbl
;
652 struct nfs4_slot
*slot
= res
->sr_slot
;
653 bool send_new_highest_used_slotid
= false;
656 session
= tbl
->session
;
658 spin_lock(&tbl
->slot_tbl_lock
);
659 /* Be nice to the server: try to ensure that the last transmitted
660 * value for highest_user_slotid <= target_highest_slotid
662 if (tbl
->highest_used_slotid
> tbl
->target_highest_slotid
)
663 send_new_highest_used_slotid
= true;
665 if (nfs41_wake_and_assign_slot(tbl
, slot
)) {
666 send_new_highest_used_slotid
= false;
669 nfs4_free_slot(tbl
, slot
);
671 if (tbl
->highest_used_slotid
!= NFS4_NO_SLOT
)
672 send_new_highest_used_slotid
= false;
674 spin_unlock(&tbl
->slot_tbl_lock
);
676 if (send_new_highest_used_slotid
)
677 nfs41_notify_server(session
->clp
);
680 int nfs41_sequence_done(struct rpc_task
*task
, struct nfs4_sequence_res
*res
)
682 struct nfs4_session
*session
;
683 struct nfs4_slot
*slot
= res
->sr_slot
;
684 struct nfs_client
*clp
;
685 bool interrupted
= false;
690 /* don't increment the sequence number if the task wasn't sent */
691 if (!RPC_WAS_SENT(task
))
694 session
= slot
->table
->session
;
696 if (slot
->interrupted
) {
697 slot
->interrupted
= 0;
701 trace_nfs4_sequence_done(session
, res
);
702 /* Check the SEQUENCE operation status */
703 switch (res
->sr_status
) {
705 /* Update the slot's sequence and clientid lease timer */
708 do_renew_lease(clp
, res
->sr_timestamp
);
709 /* Check sequence flags */
710 nfs41_handle_sequence_flag_errors(clp
, res
->sr_status_flags
);
711 nfs41_update_target_slotid(slot
->table
, slot
, res
);
715 * sr_status remains 1 if an RPC level error occurred.
716 * The server may or may not have processed the sequence
718 * Mark the slot as having hosted an interrupted RPC call.
720 slot
->interrupted
= 1;
723 /* The server detected a resend of the RPC call and
724 * returned NFS4ERR_DELAY as per Section 2.10.6.2
727 dprintk("%s: slot=%u seq=%u: Operation in progress\n",
732 case -NFS4ERR_BADSLOT
:
734 * The slot id we used was probably retired. Try again
735 * using a different slot id.
738 case -NFS4ERR_SEQ_MISORDERED
:
740 * Was the last operation on this sequence interrupted?
741 * If so, retry after bumping the sequence number.
748 * Could this slot have been previously retired?
749 * If so, then the server may be expecting seq_nr = 1!
751 if (slot
->seq_nr
!= 1) {
756 case -NFS4ERR_SEQ_FALSE_RETRY
:
760 /* Just update the slot sequence no. */
764 /* The session may be reset by one of the error handlers. */
765 dprintk("%s: Error %d free the slot \n", __func__
, res
->sr_status
);
766 nfs41_sequence_free_slot(res
);
770 if (rpc_restart_call_prepare(task
)) {
776 if (!rpc_restart_call(task
))
778 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
781 EXPORT_SYMBOL_GPL(nfs41_sequence_done
);
783 int nfs4_sequence_done(struct rpc_task
*task
, struct nfs4_sequence_res
*res
)
785 if (res
->sr_slot
== NULL
)
787 if (!res
->sr_slot
->table
->session
)
788 return nfs40_sequence_done(task
, res
);
789 return nfs41_sequence_done(task
, res
);
791 EXPORT_SYMBOL_GPL(nfs4_sequence_done
);
793 int nfs41_setup_sequence(struct nfs4_session
*session
,
794 struct nfs4_sequence_args
*args
,
795 struct nfs4_sequence_res
*res
,
796 struct rpc_task
*task
)
798 struct nfs4_slot
*slot
;
799 struct nfs4_slot_table
*tbl
;
801 dprintk("--> %s\n", __func__
);
802 /* slot already allocated? */
803 if (res
->sr_slot
!= NULL
)
806 tbl
= &session
->fc_slot_table
;
808 task
->tk_timeout
= 0;
810 spin_lock(&tbl
->slot_tbl_lock
);
811 if (test_bit(NFS4_SLOT_TBL_DRAINING
, &tbl
->slot_tbl_state
) &&
812 !args
->sa_privileged
) {
813 /* The state manager will wait until the slot table is empty */
814 dprintk("%s session is draining\n", __func__
);
818 slot
= nfs4_alloc_slot(tbl
);
820 /* If out of memory, try again in 1/4 second */
821 if (slot
== ERR_PTR(-ENOMEM
))
822 task
->tk_timeout
= HZ
>> 2;
823 dprintk("<-- %s: no free slots\n", __func__
);
826 spin_unlock(&tbl
->slot_tbl_lock
);
828 args
->sa_slot
= slot
;
830 dprintk("<-- %s slotid=%u seqid=%u\n", __func__
,
831 slot
->slot_nr
, slot
->seq_nr
);
834 res
->sr_timestamp
= jiffies
;
835 res
->sr_status_flags
= 0;
837 * sr_status is only set in decode_sequence, and so will remain
838 * set to 1 if an rpc level failure occurs.
841 trace_nfs4_setup_sequence(session
, args
);
843 rpc_call_start(task
);
846 /* Privileged tasks are queued with top priority */
847 if (args
->sa_privileged
)
848 rpc_sleep_on_priority(&tbl
->slot_tbl_waitq
, task
,
849 NULL
, RPC_PRIORITY_PRIVILEGED
);
851 rpc_sleep_on(&tbl
->slot_tbl_waitq
, task
, NULL
);
852 spin_unlock(&tbl
->slot_tbl_lock
);
855 EXPORT_SYMBOL_GPL(nfs41_setup_sequence
);
857 static int nfs4_setup_sequence(const struct nfs_server
*server
,
858 struct nfs4_sequence_args
*args
,
859 struct nfs4_sequence_res
*res
,
860 struct rpc_task
*task
)
862 struct nfs4_session
*session
= nfs4_get_session(server
);
866 return nfs40_setup_sequence(server
->nfs_client
->cl_slot_tbl
,
869 dprintk("--> %s clp %p session %p sr_slot %u\n",
870 __func__
, session
->clp
, session
, res
->sr_slot
?
871 res
->sr_slot
->slot_nr
: NFS4_NO_SLOT
);
873 ret
= nfs41_setup_sequence(session
, args
, res
, task
);
875 dprintk("<-- %s status=%d\n", __func__
, ret
);
879 static void nfs41_call_sync_prepare(struct rpc_task
*task
, void *calldata
)
881 struct nfs4_call_sync_data
*data
= calldata
;
882 struct nfs4_session
*session
= nfs4_get_session(data
->seq_server
);
884 dprintk("--> %s data->seq_server %p\n", __func__
, data
->seq_server
);
886 nfs41_setup_sequence(session
, data
->seq_args
, data
->seq_res
, task
);
889 static void nfs41_call_sync_done(struct rpc_task
*task
, void *calldata
)
891 struct nfs4_call_sync_data
*data
= calldata
;
893 nfs41_sequence_done(task
, data
->seq_res
);
896 static const struct rpc_call_ops nfs41_call_sync_ops
= {
897 .rpc_call_prepare
= nfs41_call_sync_prepare
,
898 .rpc_call_done
= nfs41_call_sync_done
,
901 #else /* !CONFIG_NFS_V4_1 */
903 static int nfs4_setup_sequence(const struct nfs_server
*server
,
904 struct nfs4_sequence_args
*args
,
905 struct nfs4_sequence_res
*res
,
906 struct rpc_task
*task
)
908 return nfs40_setup_sequence(server
->nfs_client
->cl_slot_tbl
,
912 int nfs4_sequence_done(struct rpc_task
*task
,
913 struct nfs4_sequence_res
*res
)
915 return nfs40_sequence_done(task
, res
);
917 EXPORT_SYMBOL_GPL(nfs4_sequence_done
);
919 #endif /* !CONFIG_NFS_V4_1 */
921 static void nfs40_call_sync_prepare(struct rpc_task
*task
, void *calldata
)
923 struct nfs4_call_sync_data
*data
= calldata
;
924 nfs4_setup_sequence(data
->seq_server
,
925 data
->seq_args
, data
->seq_res
, task
);
928 static void nfs40_call_sync_done(struct rpc_task
*task
, void *calldata
)
930 struct nfs4_call_sync_data
*data
= calldata
;
931 nfs4_sequence_done(task
, data
->seq_res
);
934 static const struct rpc_call_ops nfs40_call_sync_ops
= {
935 .rpc_call_prepare
= nfs40_call_sync_prepare
,
936 .rpc_call_done
= nfs40_call_sync_done
,
939 static int nfs4_call_sync_sequence(struct rpc_clnt
*clnt
,
940 struct nfs_server
*server
,
941 struct rpc_message
*msg
,
942 struct nfs4_sequence_args
*args
,
943 struct nfs4_sequence_res
*res
)
946 struct rpc_task
*task
;
947 struct nfs_client
*clp
= server
->nfs_client
;
948 struct nfs4_call_sync_data data
= {
949 .seq_server
= server
,
953 struct rpc_task_setup task_setup
= {
956 .callback_ops
= clp
->cl_mvops
->call_sync_ops
,
957 .callback_data
= &data
960 task
= rpc_run_task(&task_setup
);
964 ret
= task
->tk_status
;
970 int nfs4_call_sync(struct rpc_clnt
*clnt
,
971 struct nfs_server
*server
,
972 struct rpc_message
*msg
,
973 struct nfs4_sequence_args
*args
,
974 struct nfs4_sequence_res
*res
,
977 nfs4_init_sequence(args
, res
, cache_reply
);
978 return nfs4_call_sync_sequence(clnt
, server
, msg
, args
, res
);
981 static void update_changeattr(struct inode
*dir
, struct nfs4_change_info
*cinfo
)
983 struct nfs_inode
*nfsi
= NFS_I(dir
);
985 spin_lock(&dir
->i_lock
);
986 nfsi
->cache_validity
|= NFS_INO_INVALID_ATTR
|NFS_INO_INVALID_DATA
;
987 if (!cinfo
->atomic
|| cinfo
->before
!= dir
->i_version
)
988 nfs_force_lookup_revalidate(dir
);
989 dir
->i_version
= cinfo
->after
;
990 nfsi
->attr_gencount
= nfs_inc_attr_generation_counter();
991 nfs_fscache_invalidate(dir
);
992 spin_unlock(&dir
->i_lock
);
995 struct nfs4_opendata
{
997 struct nfs_openargs o_arg
;
998 struct nfs_openres o_res
;
999 struct nfs_open_confirmargs c_arg
;
1000 struct nfs_open_confirmres c_res
;
1001 struct nfs4_string owner_name
;
1002 struct nfs4_string group_name
;
1003 struct nfs4_label
*a_label
;
1004 struct nfs_fattr f_attr
;
1005 struct nfs4_label
*f_label
;
1007 struct dentry
*dentry
;
1008 struct nfs4_state_owner
*owner
;
1009 struct nfs4_state
*state
;
1011 unsigned long timestamp
;
1012 unsigned int rpc_done
: 1;
1013 unsigned int file_created
: 1;
1014 unsigned int is_recover
: 1;
1019 static bool nfs4_clear_cap_atomic_open_v1(struct nfs_server
*server
,
1020 int err
, struct nfs4_exception
*exception
)
1024 if (!(server
->caps
& NFS_CAP_ATOMIC_OPEN_V1
))
1026 server
->caps
&= ~NFS_CAP_ATOMIC_OPEN_V1
;
1027 exception
->retry
= 1;
1032 nfs4_map_atomic_open_share(struct nfs_server
*server
,
1033 fmode_t fmode
, int openflags
)
1037 switch (fmode
& (FMODE_READ
| FMODE_WRITE
)) {
1039 res
= NFS4_SHARE_ACCESS_READ
;
1042 res
= NFS4_SHARE_ACCESS_WRITE
;
1044 case FMODE_READ
|FMODE_WRITE
:
1045 res
= NFS4_SHARE_ACCESS_BOTH
;
1047 if (!(server
->caps
& NFS_CAP_ATOMIC_OPEN_V1
))
1049 /* Want no delegation if we're using O_DIRECT */
1050 if (openflags
& O_DIRECT
)
1051 res
|= NFS4_SHARE_WANT_NO_DELEG
;
1056 static enum open_claim_type4
1057 nfs4_map_atomic_open_claim(struct nfs_server
*server
,
1058 enum open_claim_type4 claim
)
1060 if (server
->caps
& NFS_CAP_ATOMIC_OPEN_V1
)
1065 case NFS4_OPEN_CLAIM_FH
:
1066 return NFS4_OPEN_CLAIM_NULL
;
1067 case NFS4_OPEN_CLAIM_DELEG_CUR_FH
:
1068 return NFS4_OPEN_CLAIM_DELEGATE_CUR
;
1069 case NFS4_OPEN_CLAIM_DELEG_PREV_FH
:
1070 return NFS4_OPEN_CLAIM_DELEGATE_PREV
;
1074 static void nfs4_init_opendata_res(struct nfs4_opendata
*p
)
1076 p
->o_res
.f_attr
= &p
->f_attr
;
1077 p
->o_res
.f_label
= p
->f_label
;
1078 p
->o_res
.seqid
= p
->o_arg
.seqid
;
1079 p
->c_res
.seqid
= p
->c_arg
.seqid
;
1080 p
->o_res
.server
= p
->o_arg
.server
;
1081 p
->o_res
.access_request
= p
->o_arg
.access
;
1082 nfs_fattr_init(&p
->f_attr
);
1083 nfs_fattr_init_names(&p
->f_attr
, &p
->owner_name
, &p
->group_name
);
1086 static struct nfs4_opendata
*nfs4_opendata_alloc(struct dentry
*dentry
,
1087 struct nfs4_state_owner
*sp
, fmode_t fmode
, int flags
,
1088 const struct iattr
*attrs
,
1089 struct nfs4_label
*label
,
1090 enum open_claim_type4 claim
,
1093 struct dentry
*parent
= dget_parent(dentry
);
1094 struct inode
*dir
= d_inode(parent
);
1095 struct nfs_server
*server
= NFS_SERVER(dir
);
1096 struct nfs_seqid
*(*alloc_seqid
)(struct nfs_seqid_counter
*, gfp_t
);
1097 struct nfs4_opendata
*p
;
1099 p
= kzalloc(sizeof(*p
), gfp_mask
);
1103 p
->f_label
= nfs4_label_alloc(server
, gfp_mask
);
1104 if (IS_ERR(p
->f_label
))
1107 p
->a_label
= nfs4_label_alloc(server
, gfp_mask
);
1108 if (IS_ERR(p
->a_label
))
1111 alloc_seqid
= server
->nfs_client
->cl_mvops
->alloc_seqid
;
1112 p
->o_arg
.seqid
= alloc_seqid(&sp
->so_seqid
, gfp_mask
);
1113 if (IS_ERR(p
->o_arg
.seqid
))
1114 goto err_free_label
;
1115 nfs_sb_active(dentry
->d_sb
);
1116 p
->dentry
= dget(dentry
);
1119 atomic_inc(&sp
->so_count
);
1120 p
->o_arg
.open_flags
= flags
;
1121 p
->o_arg
.fmode
= fmode
& (FMODE_READ
|FMODE_WRITE
);
1122 p
->o_arg
.share_access
= nfs4_map_atomic_open_share(server
,
1124 /* don't put an ACCESS op in OPEN compound if O_EXCL, because ACCESS
1125 * will return permission denied for all bits until close */
1126 if (!(flags
& O_EXCL
)) {
1127 /* ask server to check for all possible rights as results
1129 p
->o_arg
.access
= NFS4_ACCESS_READ
| NFS4_ACCESS_MODIFY
|
1130 NFS4_ACCESS_EXTEND
| NFS4_ACCESS_EXECUTE
;
1132 p
->o_arg
.clientid
= server
->nfs_client
->cl_clientid
;
1133 p
->o_arg
.id
.create_time
= ktime_to_ns(sp
->so_seqid
.create_time
);
1134 p
->o_arg
.id
.uniquifier
= sp
->so_seqid
.owner_id
;
1135 p
->o_arg
.name
= &dentry
->d_name
;
1136 p
->o_arg
.server
= server
;
1137 p
->o_arg
.bitmask
= nfs4_bitmask(server
, label
);
1138 p
->o_arg
.open_bitmap
= &nfs4_fattr_bitmap
[0];
1139 p
->o_arg
.label
= nfs4_label_copy(p
->a_label
, label
);
1140 p
->o_arg
.claim
= nfs4_map_atomic_open_claim(server
, claim
);
1141 switch (p
->o_arg
.claim
) {
1142 case NFS4_OPEN_CLAIM_NULL
:
1143 case NFS4_OPEN_CLAIM_DELEGATE_CUR
:
1144 case NFS4_OPEN_CLAIM_DELEGATE_PREV
:
1145 p
->o_arg
.fh
= NFS_FH(dir
);
1147 case NFS4_OPEN_CLAIM_PREVIOUS
:
1148 case NFS4_OPEN_CLAIM_FH
:
1149 case NFS4_OPEN_CLAIM_DELEG_CUR_FH
:
1150 case NFS4_OPEN_CLAIM_DELEG_PREV_FH
:
1151 p
->o_arg
.fh
= NFS_FH(d_inode(dentry
));
1153 if (attrs
!= NULL
&& attrs
->ia_valid
!= 0) {
1156 p
->o_arg
.u
.attrs
= &p
->attrs
;
1157 memcpy(&p
->attrs
, attrs
, sizeof(p
->attrs
));
1160 verf
[1] = current
->pid
;
1161 memcpy(p
->o_arg
.u
.verifier
.data
, verf
,
1162 sizeof(p
->o_arg
.u
.verifier
.data
));
1164 p
->c_arg
.fh
= &p
->o_res
.fh
;
1165 p
->c_arg
.stateid
= &p
->o_res
.stateid
;
1166 p
->c_arg
.seqid
= p
->o_arg
.seqid
;
1167 nfs4_init_opendata_res(p
);
1168 kref_init(&p
->kref
);
1172 nfs4_label_free(p
->a_label
);
1174 nfs4_label_free(p
->f_label
);
1182 static void nfs4_opendata_free(struct kref
*kref
)
1184 struct nfs4_opendata
*p
= container_of(kref
,
1185 struct nfs4_opendata
, kref
);
1186 struct super_block
*sb
= p
->dentry
->d_sb
;
1188 nfs_free_seqid(p
->o_arg
.seqid
);
1189 if (p
->state
!= NULL
)
1190 nfs4_put_open_state(p
->state
);
1191 nfs4_put_state_owner(p
->owner
);
1193 nfs4_label_free(p
->a_label
);
1194 nfs4_label_free(p
->f_label
);
1198 nfs_sb_deactive(sb
);
1199 nfs_fattr_free_names(&p
->f_attr
);
1200 kfree(p
->f_attr
.mdsthreshold
);
1204 static void nfs4_opendata_put(struct nfs4_opendata
*p
)
1207 kref_put(&p
->kref
, nfs4_opendata_free
);
1210 static int nfs4_wait_for_completion_rpc_task(struct rpc_task
*task
)
1214 ret
= rpc_wait_for_completion_task(task
);
1218 static bool nfs4_mode_match_open_stateid(struct nfs4_state
*state
,
1221 switch(fmode
& (FMODE_READ
|FMODE_WRITE
)) {
1222 case FMODE_READ
|FMODE_WRITE
:
1223 return state
->n_rdwr
!= 0;
1225 return state
->n_wronly
!= 0;
1227 return state
->n_rdonly
!= 0;
1233 static int can_open_cached(struct nfs4_state
*state
, fmode_t mode
, int open_mode
)
1237 if (open_mode
& (O_EXCL
|O_TRUNC
))
1239 switch (mode
& (FMODE_READ
|FMODE_WRITE
)) {
1241 ret
|= test_bit(NFS_O_RDONLY_STATE
, &state
->flags
) != 0
1242 && state
->n_rdonly
!= 0;
1245 ret
|= test_bit(NFS_O_WRONLY_STATE
, &state
->flags
) != 0
1246 && state
->n_wronly
!= 0;
1248 case FMODE_READ
|FMODE_WRITE
:
1249 ret
|= test_bit(NFS_O_RDWR_STATE
, &state
->flags
) != 0
1250 && state
->n_rdwr
!= 0;
1256 static int can_open_delegated(struct nfs_delegation
*delegation
, fmode_t fmode
,
1257 enum open_claim_type4 claim
)
1259 if (delegation
== NULL
)
1261 if ((delegation
->type
& fmode
) != fmode
)
1263 if (test_bit(NFS_DELEGATION_RETURNING
, &delegation
->flags
))
1266 case NFS4_OPEN_CLAIM_NULL
:
1267 case NFS4_OPEN_CLAIM_FH
:
1269 case NFS4_OPEN_CLAIM_PREVIOUS
:
1270 if (!test_bit(NFS_DELEGATION_NEED_RECLAIM
, &delegation
->flags
))
1275 nfs_mark_delegation_referenced(delegation
);
1279 static void update_open_stateflags(struct nfs4_state
*state
, fmode_t fmode
)
1288 case FMODE_READ
|FMODE_WRITE
:
1291 nfs4_state_set_mode_locked(state
, state
->state
| fmode
);
1294 static void nfs_test_and_clear_all_open_stateid(struct nfs4_state
*state
)
1296 struct nfs_client
*clp
= state
->owner
->so_server
->nfs_client
;
1297 bool need_recover
= false;
1299 if (test_and_clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
) && state
->n_rdonly
)
1300 need_recover
= true;
1301 if (test_and_clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
) && state
->n_wronly
)
1302 need_recover
= true;
1303 if (test_and_clear_bit(NFS_O_RDWR_STATE
, &state
->flags
) && state
->n_rdwr
)
1304 need_recover
= true;
1306 nfs4_state_mark_reclaim_nograce(clp
, state
);
1309 static bool nfs_need_update_open_stateid(struct nfs4_state
*state
,
1310 nfs4_stateid
*stateid
)
1312 if (test_and_set_bit(NFS_OPEN_STATE
, &state
->flags
) == 0)
1314 if (!nfs4_stateid_match_other(stateid
, &state
->open_stateid
)) {
1315 nfs_test_and_clear_all_open_stateid(state
);
1318 if (nfs4_stateid_is_newer(stateid
, &state
->open_stateid
))
1323 static void nfs_resync_open_stateid_locked(struct nfs4_state
*state
)
1325 if (!(state
->n_wronly
|| state
->n_rdonly
|| state
->n_rdwr
))
1327 if (state
->n_wronly
)
1328 set_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1329 if (state
->n_rdonly
)
1330 set_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1332 set_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1333 set_bit(NFS_OPEN_STATE
, &state
->flags
);
1336 static void nfs_clear_open_stateid_locked(struct nfs4_state
*state
,
1337 nfs4_stateid
*arg_stateid
,
1338 nfs4_stateid
*stateid
, fmode_t fmode
)
1340 clear_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1341 switch (fmode
& (FMODE_READ
|FMODE_WRITE
)) {
1343 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1346 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1349 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1350 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1351 clear_bit(NFS_OPEN_STATE
, &state
->flags
);
1353 if (stateid
== NULL
)
1355 /* Handle races with OPEN */
1356 if (!nfs4_stateid_match_other(arg_stateid
, &state
->open_stateid
) ||
1357 (nfs4_stateid_match_other(stateid
, &state
->open_stateid
) &&
1358 !nfs4_stateid_is_newer(stateid
, &state
->open_stateid
))) {
1359 nfs_resync_open_stateid_locked(state
);
1362 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0)
1363 nfs4_stateid_copy(&state
->stateid
, stateid
);
1364 nfs4_stateid_copy(&state
->open_stateid
, stateid
);
1367 static void nfs_clear_open_stateid(struct nfs4_state
*state
,
1368 nfs4_stateid
*arg_stateid
,
1369 nfs4_stateid
*stateid
, fmode_t fmode
)
1371 write_seqlock(&state
->seqlock
);
1372 nfs_clear_open_stateid_locked(state
, arg_stateid
, stateid
, fmode
);
1373 write_sequnlock(&state
->seqlock
);
1374 if (test_bit(NFS_STATE_RECLAIM_NOGRACE
, &state
->flags
))
1375 nfs4_schedule_state_manager(state
->owner
->so_server
->nfs_client
);
1378 static void nfs_set_open_stateid_locked(struct nfs4_state
*state
, nfs4_stateid
*stateid
, fmode_t fmode
)
1382 set_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1385 set_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1387 case FMODE_READ
|FMODE_WRITE
:
1388 set_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1390 if (!nfs_need_update_open_stateid(state
, stateid
))
1392 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0)
1393 nfs4_stateid_copy(&state
->stateid
, stateid
);
1394 nfs4_stateid_copy(&state
->open_stateid
, stateid
);
1397 static void __update_open_stateid(struct nfs4_state
*state
, nfs4_stateid
*open_stateid
, const nfs4_stateid
*deleg_stateid
, fmode_t fmode
)
1400 * Protect the call to nfs4_state_set_mode_locked and
1401 * serialise the stateid update
1403 spin_lock(&state
->owner
->so_lock
);
1404 write_seqlock(&state
->seqlock
);
1405 if (deleg_stateid
!= NULL
) {
1406 nfs4_stateid_copy(&state
->stateid
, deleg_stateid
);
1407 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1409 if (open_stateid
!= NULL
)
1410 nfs_set_open_stateid_locked(state
, open_stateid
, fmode
);
1411 write_sequnlock(&state
->seqlock
);
1412 update_open_stateflags(state
, fmode
);
1413 spin_unlock(&state
->owner
->so_lock
);
1416 static int update_open_stateid(struct nfs4_state
*state
, nfs4_stateid
*open_stateid
, nfs4_stateid
*delegation
, fmode_t fmode
)
1418 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
1419 struct nfs_delegation
*deleg_cur
;
1422 fmode
&= (FMODE_READ
|FMODE_WRITE
);
1425 deleg_cur
= rcu_dereference(nfsi
->delegation
);
1426 if (deleg_cur
== NULL
)
1429 spin_lock(&deleg_cur
->lock
);
1430 if (rcu_dereference(nfsi
->delegation
) != deleg_cur
||
1431 test_bit(NFS_DELEGATION_RETURNING
, &deleg_cur
->flags
) ||
1432 (deleg_cur
->type
& fmode
) != fmode
)
1433 goto no_delegation_unlock
;
1435 if (delegation
== NULL
)
1436 delegation
= &deleg_cur
->stateid
;
1437 else if (!nfs4_stateid_match(&deleg_cur
->stateid
, delegation
))
1438 goto no_delegation_unlock
;
1440 nfs_mark_delegation_referenced(deleg_cur
);
1441 __update_open_stateid(state
, open_stateid
, &deleg_cur
->stateid
, fmode
);
1443 no_delegation_unlock
:
1444 spin_unlock(&deleg_cur
->lock
);
1448 if (!ret
&& open_stateid
!= NULL
) {
1449 __update_open_stateid(state
, open_stateid
, NULL
, fmode
);
1452 if (test_bit(NFS_STATE_RECLAIM_NOGRACE
, &state
->flags
))
1453 nfs4_schedule_state_manager(state
->owner
->so_server
->nfs_client
);
1458 static bool nfs4_update_lock_stateid(struct nfs4_lock_state
*lsp
,
1459 const nfs4_stateid
*stateid
)
1461 struct nfs4_state
*state
= lsp
->ls_state
;
1464 spin_lock(&state
->state_lock
);
1465 if (!nfs4_stateid_match_other(stateid
, &lsp
->ls_stateid
))
1467 if (!nfs4_stateid_is_newer(stateid
, &lsp
->ls_stateid
))
1469 nfs4_stateid_copy(&lsp
->ls_stateid
, stateid
);
1472 spin_unlock(&state
->state_lock
);
1476 static void nfs4_return_incompatible_delegation(struct inode
*inode
, fmode_t fmode
)
1478 struct nfs_delegation
*delegation
;
1481 delegation
= rcu_dereference(NFS_I(inode
)->delegation
);
1482 if (delegation
== NULL
|| (delegation
->type
& fmode
) == fmode
) {
1487 nfs4_inode_return_delegation(inode
);
1490 static struct nfs4_state
*nfs4_try_open_cached(struct nfs4_opendata
*opendata
)
1492 struct nfs4_state
*state
= opendata
->state
;
1493 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
1494 struct nfs_delegation
*delegation
;
1495 int open_mode
= opendata
->o_arg
.open_flags
;
1496 fmode_t fmode
= opendata
->o_arg
.fmode
;
1497 enum open_claim_type4 claim
= opendata
->o_arg
.claim
;
1498 nfs4_stateid stateid
;
1502 spin_lock(&state
->owner
->so_lock
);
1503 if (can_open_cached(state
, fmode
, open_mode
)) {
1504 update_open_stateflags(state
, fmode
);
1505 spin_unlock(&state
->owner
->so_lock
);
1506 goto out_return_state
;
1508 spin_unlock(&state
->owner
->so_lock
);
1510 delegation
= rcu_dereference(nfsi
->delegation
);
1511 if (!can_open_delegated(delegation
, fmode
, claim
)) {
1515 /* Save the delegation */
1516 nfs4_stateid_copy(&stateid
, &delegation
->stateid
);
1518 nfs_release_seqid(opendata
->o_arg
.seqid
);
1519 if (!opendata
->is_recover
) {
1520 ret
= nfs_may_open(state
->inode
, state
->owner
->so_cred
, open_mode
);
1526 /* Try to update the stateid using the delegation */
1527 if (update_open_stateid(state
, NULL
, &stateid
, fmode
))
1528 goto out_return_state
;
1531 return ERR_PTR(ret
);
1533 atomic_inc(&state
->count
);
1538 nfs4_opendata_check_deleg(struct nfs4_opendata
*data
, struct nfs4_state
*state
)
1540 struct nfs_client
*clp
= NFS_SERVER(state
->inode
)->nfs_client
;
1541 struct nfs_delegation
*delegation
;
1542 int delegation_flags
= 0;
1545 delegation
= rcu_dereference(NFS_I(state
->inode
)->delegation
);
1547 delegation_flags
= delegation
->flags
;
1549 switch (data
->o_arg
.claim
) {
1552 case NFS4_OPEN_CLAIM_DELEGATE_CUR
:
1553 case NFS4_OPEN_CLAIM_DELEG_CUR_FH
:
1554 pr_err_ratelimited("NFS: Broken NFSv4 server %s is "
1555 "returning a delegation for "
1556 "OPEN(CLAIM_DELEGATE_CUR)\n",
1560 if ((delegation_flags
& 1UL<<NFS_DELEGATION_NEED_RECLAIM
) == 0)
1561 nfs_inode_set_delegation(state
->inode
,
1562 data
->owner
->so_cred
,
1565 nfs_inode_reclaim_delegation(state
->inode
,
1566 data
->owner
->so_cred
,
1571 * Check the inode attributes against the CLAIM_PREVIOUS returned attributes
1572 * and update the nfs4_state.
1574 static struct nfs4_state
*
1575 _nfs4_opendata_reclaim_to_nfs4_state(struct nfs4_opendata
*data
)
1577 struct inode
*inode
= data
->state
->inode
;
1578 struct nfs4_state
*state
= data
->state
;
1581 if (!data
->rpc_done
) {
1582 if (data
->rpc_status
) {
1583 ret
= data
->rpc_status
;
1586 /* cached opens have already been processed */
1590 ret
= nfs_refresh_inode(inode
, &data
->f_attr
);
1594 if (data
->o_res
.delegation_type
!= 0)
1595 nfs4_opendata_check_deleg(data
, state
);
1597 update_open_stateid(state
, &data
->o_res
.stateid
, NULL
,
1599 atomic_inc(&state
->count
);
1603 return ERR_PTR(ret
);
1607 static struct nfs4_state
*
1608 _nfs4_opendata_to_nfs4_state(struct nfs4_opendata
*data
)
1610 struct inode
*inode
;
1611 struct nfs4_state
*state
= NULL
;
1614 if (!data
->rpc_done
) {
1615 state
= nfs4_try_open_cached(data
);
1616 trace_nfs4_cached_open(data
->state
);
1621 if (!(data
->f_attr
.valid
& NFS_ATTR_FATTR
))
1623 inode
= nfs_fhget(data
->dir
->d_sb
, &data
->o_res
.fh
, &data
->f_attr
, data
->f_label
);
1624 ret
= PTR_ERR(inode
);
1628 state
= nfs4_get_open_state(inode
, data
->owner
);
1631 if (data
->o_res
.delegation_type
!= 0)
1632 nfs4_opendata_check_deleg(data
, state
);
1633 update_open_stateid(state
, &data
->o_res
.stateid
, NULL
,
1637 nfs_release_seqid(data
->o_arg
.seqid
);
1642 return ERR_PTR(ret
);
1645 static struct nfs4_state
*
1646 nfs4_opendata_to_nfs4_state(struct nfs4_opendata
*data
)
1648 if (data
->o_arg
.claim
== NFS4_OPEN_CLAIM_PREVIOUS
)
1649 return _nfs4_opendata_reclaim_to_nfs4_state(data
);
1650 return _nfs4_opendata_to_nfs4_state(data
);
1653 static struct nfs_open_context
*nfs4_state_find_open_context(struct nfs4_state
*state
)
1655 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
1656 struct nfs_open_context
*ctx
;
1658 spin_lock(&state
->inode
->i_lock
);
1659 list_for_each_entry(ctx
, &nfsi
->open_files
, list
) {
1660 if (ctx
->state
!= state
)
1662 get_nfs_open_context(ctx
);
1663 spin_unlock(&state
->inode
->i_lock
);
1666 spin_unlock(&state
->inode
->i_lock
);
1667 return ERR_PTR(-ENOENT
);
1670 static struct nfs4_opendata
*nfs4_open_recoverdata_alloc(struct nfs_open_context
*ctx
,
1671 struct nfs4_state
*state
, enum open_claim_type4 claim
)
1673 struct nfs4_opendata
*opendata
;
1675 opendata
= nfs4_opendata_alloc(ctx
->dentry
, state
->owner
, 0, 0,
1676 NULL
, NULL
, claim
, GFP_NOFS
);
1677 if (opendata
== NULL
)
1678 return ERR_PTR(-ENOMEM
);
1679 opendata
->state
= state
;
1680 atomic_inc(&state
->count
);
1684 static int nfs4_open_recover_helper(struct nfs4_opendata
*opendata
,
1687 struct nfs4_state
*newstate
;
1690 if (!nfs4_mode_match_open_stateid(opendata
->state
, fmode
))
1692 opendata
->o_arg
.open_flags
= 0;
1693 opendata
->o_arg
.fmode
= fmode
;
1694 opendata
->o_arg
.share_access
= nfs4_map_atomic_open_share(
1695 NFS_SB(opendata
->dentry
->d_sb
),
1697 memset(&opendata
->o_res
, 0, sizeof(opendata
->o_res
));
1698 memset(&opendata
->c_res
, 0, sizeof(opendata
->c_res
));
1699 nfs4_init_opendata_res(opendata
);
1700 ret
= _nfs4_recover_proc_open(opendata
);
1703 newstate
= nfs4_opendata_to_nfs4_state(opendata
);
1704 if (IS_ERR(newstate
))
1705 return PTR_ERR(newstate
);
1706 if (newstate
!= opendata
->state
)
1708 nfs4_close_state(newstate
, fmode
);
1712 static int nfs4_open_recover(struct nfs4_opendata
*opendata
, struct nfs4_state
*state
)
1716 /* Don't trigger recovery in nfs_test_and_clear_all_open_stateid */
1717 clear_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1718 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1719 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1720 /* memory barrier prior to reading state->n_* */
1721 clear_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1722 clear_bit(NFS_OPEN_STATE
, &state
->flags
);
1724 ret
= nfs4_open_recover_helper(opendata
, FMODE_READ
|FMODE_WRITE
);
1727 ret
= nfs4_open_recover_helper(opendata
, FMODE_WRITE
);
1730 ret
= nfs4_open_recover_helper(opendata
, FMODE_READ
);
1734 * We may have performed cached opens for all three recoveries.
1735 * Check if we need to update the current stateid.
1737 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0 &&
1738 !nfs4_stateid_match(&state
->stateid
, &state
->open_stateid
)) {
1739 write_seqlock(&state
->seqlock
);
1740 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0)
1741 nfs4_stateid_copy(&state
->stateid
, &state
->open_stateid
);
1742 write_sequnlock(&state
->seqlock
);
1749 * reclaim state on the server after a reboot.
1751 static int _nfs4_do_open_reclaim(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1753 struct nfs_delegation
*delegation
;
1754 struct nfs4_opendata
*opendata
;
1755 fmode_t delegation_type
= 0;
1758 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
,
1759 NFS4_OPEN_CLAIM_PREVIOUS
);
1760 if (IS_ERR(opendata
))
1761 return PTR_ERR(opendata
);
1763 delegation
= rcu_dereference(NFS_I(state
->inode
)->delegation
);
1764 if (delegation
!= NULL
&& test_bit(NFS_DELEGATION_NEED_RECLAIM
, &delegation
->flags
) != 0)
1765 delegation_type
= delegation
->type
;
1767 opendata
->o_arg
.u
.delegation_type
= delegation_type
;
1768 status
= nfs4_open_recover(opendata
, state
);
1769 nfs4_opendata_put(opendata
);
1773 static int nfs4_do_open_reclaim(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1775 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1776 struct nfs4_exception exception
= { };
1779 err
= _nfs4_do_open_reclaim(ctx
, state
);
1780 trace_nfs4_open_reclaim(ctx
, 0, err
);
1781 if (nfs4_clear_cap_atomic_open_v1(server
, err
, &exception
))
1783 if (err
!= -NFS4ERR_DELAY
)
1785 nfs4_handle_exception(server
, err
, &exception
);
1786 } while (exception
.retry
);
1790 static int nfs4_open_reclaim(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
1792 struct nfs_open_context
*ctx
;
1795 ctx
= nfs4_state_find_open_context(state
);
1798 ret
= nfs4_do_open_reclaim(ctx
, state
);
1799 put_nfs_open_context(ctx
);
1803 static int nfs4_handle_delegation_recall_error(struct nfs_server
*server
, struct nfs4_state
*state
, const nfs4_stateid
*stateid
, int err
)
1807 printk(KERN_ERR
"NFS: %s: unhandled error "
1808 "%d.\n", __func__
, err
);
1814 case -NFS4ERR_BADSESSION
:
1815 case -NFS4ERR_BADSLOT
:
1816 case -NFS4ERR_BAD_HIGH_SLOT
:
1817 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
1818 case -NFS4ERR_DEADSESSION
:
1819 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1820 nfs4_schedule_session_recovery(server
->nfs_client
->cl_session
, err
);
1822 case -NFS4ERR_STALE_CLIENTID
:
1823 case -NFS4ERR_STALE_STATEID
:
1824 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1825 case -NFS4ERR_EXPIRED
:
1826 /* Don't recall a delegation if it was lost */
1827 nfs4_schedule_lease_recovery(server
->nfs_client
);
1829 case -NFS4ERR_MOVED
:
1830 nfs4_schedule_migration_recovery(server
);
1832 case -NFS4ERR_LEASE_MOVED
:
1833 nfs4_schedule_lease_moved_recovery(server
->nfs_client
);
1835 case -NFS4ERR_DELEG_REVOKED
:
1836 case -NFS4ERR_ADMIN_REVOKED
:
1837 case -NFS4ERR_BAD_STATEID
:
1838 case -NFS4ERR_OPENMODE
:
1839 nfs_inode_find_state_and_recover(state
->inode
,
1841 nfs4_schedule_stateid_recovery(server
, state
);
1843 case -NFS4ERR_DELAY
:
1844 case -NFS4ERR_GRACE
:
1845 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1849 case -NFS4ERR_DENIED
:
1850 /* kill_proc(fl->fl_pid, SIGLOST, 1); */
1856 int nfs4_open_delegation_recall(struct nfs_open_context
*ctx
,
1857 struct nfs4_state
*state
, const nfs4_stateid
*stateid
,
1860 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1861 struct nfs4_opendata
*opendata
;
1864 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
,
1865 NFS4_OPEN_CLAIM_DELEG_CUR_FH
);
1866 if (IS_ERR(opendata
))
1867 return PTR_ERR(opendata
);
1868 nfs4_stateid_copy(&opendata
->o_arg
.u
.delegation
, stateid
);
1869 write_seqlock(&state
->seqlock
);
1870 nfs4_stateid_copy(&state
->stateid
, &state
->open_stateid
);
1871 write_sequnlock(&state
->seqlock
);
1872 clear_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1873 switch (type
& (FMODE_READ
|FMODE_WRITE
)) {
1874 case FMODE_READ
|FMODE_WRITE
:
1876 err
= nfs4_open_recover_helper(opendata
, FMODE_READ
|FMODE_WRITE
);
1879 err
= nfs4_open_recover_helper(opendata
, FMODE_WRITE
);
1883 err
= nfs4_open_recover_helper(opendata
, FMODE_READ
);
1885 nfs4_opendata_put(opendata
);
1886 return nfs4_handle_delegation_recall_error(server
, state
, stateid
, err
);
1889 static void nfs4_open_confirm_prepare(struct rpc_task
*task
, void *calldata
)
1891 struct nfs4_opendata
*data
= calldata
;
1893 nfs40_setup_sequence(data
->o_arg
.server
->nfs_client
->cl_slot_tbl
,
1894 &data
->c_arg
.seq_args
, &data
->c_res
.seq_res
, task
);
1897 static void nfs4_open_confirm_done(struct rpc_task
*task
, void *calldata
)
1899 struct nfs4_opendata
*data
= calldata
;
1901 nfs40_sequence_done(task
, &data
->c_res
.seq_res
);
1903 data
->rpc_status
= task
->tk_status
;
1904 if (data
->rpc_status
== 0) {
1905 nfs4_stateid_copy(&data
->o_res
.stateid
, &data
->c_res
.stateid
);
1906 nfs_confirm_seqid(&data
->owner
->so_seqid
, 0);
1907 renew_lease(data
->o_res
.server
, data
->timestamp
);
1912 static void nfs4_open_confirm_release(void *calldata
)
1914 struct nfs4_opendata
*data
= calldata
;
1915 struct nfs4_state
*state
= NULL
;
1917 /* If this request hasn't been cancelled, do nothing */
1918 if (data
->cancelled
== 0)
1920 /* In case of error, no cleanup! */
1921 if (!data
->rpc_done
)
1923 state
= nfs4_opendata_to_nfs4_state(data
);
1925 nfs4_close_state(state
, data
->o_arg
.fmode
);
1927 nfs4_opendata_put(data
);
1930 static const struct rpc_call_ops nfs4_open_confirm_ops
= {
1931 .rpc_call_prepare
= nfs4_open_confirm_prepare
,
1932 .rpc_call_done
= nfs4_open_confirm_done
,
1933 .rpc_release
= nfs4_open_confirm_release
,
1937 * Note: On error, nfs4_proc_open_confirm will free the struct nfs4_opendata
1939 static int _nfs4_proc_open_confirm(struct nfs4_opendata
*data
)
1941 struct nfs_server
*server
= NFS_SERVER(d_inode(data
->dir
));
1942 struct rpc_task
*task
;
1943 struct rpc_message msg
= {
1944 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_CONFIRM
],
1945 .rpc_argp
= &data
->c_arg
,
1946 .rpc_resp
= &data
->c_res
,
1947 .rpc_cred
= data
->owner
->so_cred
,
1949 struct rpc_task_setup task_setup_data
= {
1950 .rpc_client
= server
->client
,
1951 .rpc_message
= &msg
,
1952 .callback_ops
= &nfs4_open_confirm_ops
,
1953 .callback_data
= data
,
1954 .workqueue
= nfsiod_workqueue
,
1955 .flags
= RPC_TASK_ASYNC
,
1959 nfs4_init_sequence(&data
->c_arg
.seq_args
, &data
->c_res
.seq_res
, 1);
1960 kref_get(&data
->kref
);
1962 data
->rpc_status
= 0;
1963 data
->timestamp
= jiffies
;
1964 if (data
->is_recover
)
1965 nfs4_set_sequence_privileged(&data
->c_arg
.seq_args
);
1966 task
= rpc_run_task(&task_setup_data
);
1968 return PTR_ERR(task
);
1969 status
= nfs4_wait_for_completion_rpc_task(task
);
1971 data
->cancelled
= 1;
1974 status
= data
->rpc_status
;
1979 static void nfs4_open_prepare(struct rpc_task
*task
, void *calldata
)
1981 struct nfs4_opendata
*data
= calldata
;
1982 struct nfs4_state_owner
*sp
= data
->owner
;
1983 struct nfs_client
*clp
= sp
->so_server
->nfs_client
;
1984 enum open_claim_type4 claim
= data
->o_arg
.claim
;
1986 if (nfs_wait_on_sequence(data
->o_arg
.seqid
, task
) != 0)
1989 * Check if we still need to send an OPEN call, or if we can use
1990 * a delegation instead.
1992 if (data
->state
!= NULL
) {
1993 struct nfs_delegation
*delegation
;
1995 if (can_open_cached(data
->state
, data
->o_arg
.fmode
, data
->o_arg
.open_flags
))
1998 delegation
= rcu_dereference(NFS_I(data
->state
->inode
)->delegation
);
1999 if (can_open_delegated(delegation
, data
->o_arg
.fmode
, claim
))
2000 goto unlock_no_action
;
2003 /* Update client id. */
2004 data
->o_arg
.clientid
= clp
->cl_clientid
;
2008 case NFS4_OPEN_CLAIM_PREVIOUS
:
2009 case NFS4_OPEN_CLAIM_DELEG_CUR_FH
:
2010 case NFS4_OPEN_CLAIM_DELEG_PREV_FH
:
2011 data
->o_arg
.open_bitmap
= &nfs4_open_noattr_bitmap
[0];
2012 case NFS4_OPEN_CLAIM_FH
:
2013 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_NOATTR
];
2014 nfs_copy_fh(&data
->o_res
.fh
, data
->o_arg
.fh
);
2016 data
->timestamp
= jiffies
;
2017 if (nfs4_setup_sequence(data
->o_arg
.server
,
2018 &data
->o_arg
.seq_args
,
2019 &data
->o_res
.seq_res
,
2021 nfs_release_seqid(data
->o_arg
.seqid
);
2023 /* Set the create mode (note dependency on the session type) */
2024 data
->o_arg
.createmode
= NFS4_CREATE_UNCHECKED
;
2025 if (data
->o_arg
.open_flags
& O_EXCL
) {
2026 data
->o_arg
.createmode
= NFS4_CREATE_EXCLUSIVE
;
2027 if (nfs4_has_persistent_session(clp
))
2028 data
->o_arg
.createmode
= NFS4_CREATE_GUARDED
;
2029 else if (clp
->cl_mvops
->minor_version
> 0)
2030 data
->o_arg
.createmode
= NFS4_CREATE_EXCLUSIVE4_1
;
2034 trace_nfs4_cached_open(data
->state
);
2037 task
->tk_action
= NULL
;
2039 nfs4_sequence_done(task
, &data
->o_res
.seq_res
);
2042 static void nfs4_open_done(struct rpc_task
*task
, void *calldata
)
2044 struct nfs4_opendata
*data
= calldata
;
2046 data
->rpc_status
= task
->tk_status
;
2048 if (!nfs4_sequence_done(task
, &data
->o_res
.seq_res
))
2051 if (task
->tk_status
== 0) {
2052 if (data
->o_res
.f_attr
->valid
& NFS_ATTR_FATTR_TYPE
) {
2053 switch (data
->o_res
.f_attr
->mode
& S_IFMT
) {
2057 data
->rpc_status
= -ELOOP
;
2060 data
->rpc_status
= -EISDIR
;
2063 data
->rpc_status
= -ENOTDIR
;
2066 renew_lease(data
->o_res
.server
, data
->timestamp
);
2067 if (!(data
->o_res
.rflags
& NFS4_OPEN_RESULT_CONFIRM
))
2068 nfs_confirm_seqid(&data
->owner
->so_seqid
, 0);
2073 static void nfs4_open_release(void *calldata
)
2075 struct nfs4_opendata
*data
= calldata
;
2076 struct nfs4_state
*state
= NULL
;
2078 /* If this request hasn't been cancelled, do nothing */
2079 if (data
->cancelled
== 0)
2081 /* In case of error, no cleanup! */
2082 if (data
->rpc_status
!= 0 || !data
->rpc_done
)
2084 /* In case we need an open_confirm, no cleanup! */
2085 if (data
->o_res
.rflags
& NFS4_OPEN_RESULT_CONFIRM
)
2087 state
= nfs4_opendata_to_nfs4_state(data
);
2089 nfs4_close_state(state
, data
->o_arg
.fmode
);
2091 nfs4_opendata_put(data
);
2094 static const struct rpc_call_ops nfs4_open_ops
= {
2095 .rpc_call_prepare
= nfs4_open_prepare
,
2096 .rpc_call_done
= nfs4_open_done
,
2097 .rpc_release
= nfs4_open_release
,
2100 static int nfs4_run_open_task(struct nfs4_opendata
*data
, int isrecover
)
2102 struct inode
*dir
= d_inode(data
->dir
);
2103 struct nfs_server
*server
= NFS_SERVER(dir
);
2104 struct nfs_openargs
*o_arg
= &data
->o_arg
;
2105 struct nfs_openres
*o_res
= &data
->o_res
;
2106 struct rpc_task
*task
;
2107 struct rpc_message msg
= {
2108 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN
],
2111 .rpc_cred
= data
->owner
->so_cred
,
2113 struct rpc_task_setup task_setup_data
= {
2114 .rpc_client
= server
->client
,
2115 .rpc_message
= &msg
,
2116 .callback_ops
= &nfs4_open_ops
,
2117 .callback_data
= data
,
2118 .workqueue
= nfsiod_workqueue
,
2119 .flags
= RPC_TASK_ASYNC
,
2123 nfs4_init_sequence(&o_arg
->seq_args
, &o_res
->seq_res
, 1);
2124 kref_get(&data
->kref
);
2126 data
->rpc_status
= 0;
2127 data
->cancelled
= 0;
2128 data
->is_recover
= 0;
2130 nfs4_set_sequence_privileged(&o_arg
->seq_args
);
2131 data
->is_recover
= 1;
2133 task
= rpc_run_task(&task_setup_data
);
2135 return PTR_ERR(task
);
2136 status
= nfs4_wait_for_completion_rpc_task(task
);
2138 data
->cancelled
= 1;
2141 status
= data
->rpc_status
;
2147 static int _nfs4_recover_proc_open(struct nfs4_opendata
*data
)
2149 struct inode
*dir
= d_inode(data
->dir
);
2150 struct nfs_openres
*o_res
= &data
->o_res
;
2153 status
= nfs4_run_open_task(data
, 1);
2154 if (status
!= 0 || !data
->rpc_done
)
2157 nfs_fattr_map_and_free_names(NFS_SERVER(dir
), &data
->f_attr
);
2159 if (o_res
->rflags
& NFS4_OPEN_RESULT_CONFIRM
) {
2160 status
= _nfs4_proc_open_confirm(data
);
2169 * Additional permission checks in order to distinguish between an
2170 * open for read, and an open for execute. This works around the
2171 * fact that NFSv4 OPEN treats read and execute permissions as being
2173 * Note that in the non-execute case, we want to turn off permission
2174 * checking if we just created a new file (POSIX open() semantics).
2176 static int nfs4_opendata_access(struct rpc_cred
*cred
,
2177 struct nfs4_opendata
*opendata
,
2178 struct nfs4_state
*state
, fmode_t fmode
,
2181 struct nfs_access_entry cache
;
2184 /* access call failed or for some reason the server doesn't
2185 * support any access modes -- defer access call until later */
2186 if (opendata
->o_res
.access_supported
== 0)
2191 * Use openflags to check for exec, because fmode won't
2192 * always have FMODE_EXEC set when file open for exec.
2194 if (openflags
& __FMODE_EXEC
) {
2195 /* ONLY check for exec rights */
2197 } else if ((fmode
& FMODE_READ
) && !opendata
->file_created
)
2201 cache
.jiffies
= jiffies
;
2202 nfs_access_set_mask(&cache
, opendata
->o_res
.access_result
);
2203 nfs_access_add_cache(state
->inode
, &cache
);
2205 if ((mask
& ~cache
.mask
& (MAY_READ
| MAY_EXEC
)) == 0)
2208 /* even though OPEN succeeded, access is denied. Close the file */
2209 nfs4_close_state(state
, fmode
);
2214 * Note: On error, nfs4_proc_open will free the struct nfs4_opendata
2216 static int _nfs4_proc_open(struct nfs4_opendata
*data
)
2218 struct inode
*dir
= d_inode(data
->dir
);
2219 struct nfs_server
*server
= NFS_SERVER(dir
);
2220 struct nfs_openargs
*o_arg
= &data
->o_arg
;
2221 struct nfs_openres
*o_res
= &data
->o_res
;
2224 status
= nfs4_run_open_task(data
, 0);
2225 if (!data
->rpc_done
)
2228 if (status
== -NFS4ERR_BADNAME
&&
2229 !(o_arg
->open_flags
& O_CREAT
))
2234 nfs_fattr_map_and_free_names(server
, &data
->f_attr
);
2236 if (o_arg
->open_flags
& O_CREAT
) {
2237 update_changeattr(dir
, &o_res
->cinfo
);
2238 if (o_arg
->open_flags
& O_EXCL
)
2239 data
->file_created
= 1;
2240 else if (o_res
->cinfo
.before
!= o_res
->cinfo
.after
)
2241 data
->file_created
= 1;
2243 if ((o_res
->rflags
& NFS4_OPEN_RESULT_LOCKTYPE_POSIX
) == 0)
2244 server
->caps
&= ~NFS_CAP_POSIX_LOCK
;
2245 if(o_res
->rflags
& NFS4_OPEN_RESULT_CONFIRM
) {
2246 status
= _nfs4_proc_open_confirm(data
);
2250 if (!(o_res
->f_attr
->valid
& NFS_ATTR_FATTR
))
2251 nfs4_proc_getattr(server
, &o_res
->fh
, o_res
->f_attr
, o_res
->f_label
);
2255 static int nfs4_recover_expired_lease(struct nfs_server
*server
)
2257 return nfs4_client_recover_expired_lease(server
->nfs_client
);
2262 * reclaim state on the server after a network partition.
2263 * Assumes caller holds the appropriate lock
2265 static int _nfs4_open_expired(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
2267 struct nfs4_opendata
*opendata
;
2270 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
,
2271 NFS4_OPEN_CLAIM_FH
);
2272 if (IS_ERR(opendata
))
2273 return PTR_ERR(opendata
);
2274 ret
= nfs4_open_recover(opendata
, state
);
2276 d_drop(ctx
->dentry
);
2277 nfs4_opendata_put(opendata
);
2281 static int nfs4_do_open_expired(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
2283 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
2284 struct nfs4_exception exception
= { };
2288 err
= _nfs4_open_expired(ctx
, state
);
2289 trace_nfs4_open_expired(ctx
, 0, err
);
2290 if (nfs4_clear_cap_atomic_open_v1(server
, err
, &exception
))
2295 case -NFS4ERR_GRACE
:
2296 case -NFS4ERR_DELAY
:
2297 nfs4_handle_exception(server
, err
, &exception
);
2300 } while (exception
.retry
);
2305 static int nfs4_open_expired(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
2307 struct nfs_open_context
*ctx
;
2310 ctx
= nfs4_state_find_open_context(state
);
2313 ret
= nfs4_do_open_expired(ctx
, state
);
2314 put_nfs_open_context(ctx
);
2318 static void nfs_finish_clear_delegation_stateid(struct nfs4_state
*state
)
2320 nfs_remove_bad_delegation(state
->inode
);
2321 write_seqlock(&state
->seqlock
);
2322 nfs4_stateid_copy(&state
->stateid
, &state
->open_stateid
);
2323 write_sequnlock(&state
->seqlock
);
2324 clear_bit(NFS_DELEGATED_STATE
, &state
->flags
);
2327 static void nfs40_clear_delegation_stateid(struct nfs4_state
*state
)
2329 if (rcu_access_pointer(NFS_I(state
->inode
)->delegation
) != NULL
)
2330 nfs_finish_clear_delegation_stateid(state
);
2333 static int nfs40_open_expired(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
2335 /* NFSv4.0 doesn't allow for delegation recovery on open expire */
2336 nfs40_clear_delegation_stateid(state
);
2337 return nfs4_open_expired(sp
, state
);
2340 #if defined(CONFIG_NFS_V4_1)
2341 static void nfs41_check_delegation_stateid(struct nfs4_state
*state
)
2343 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
2344 nfs4_stateid stateid
;
2345 struct nfs_delegation
*delegation
;
2346 struct rpc_cred
*cred
;
2349 /* Get the delegation credential for use by test/free_stateid */
2351 delegation
= rcu_dereference(NFS_I(state
->inode
)->delegation
);
2352 if (delegation
== NULL
) {
2357 nfs4_stateid_copy(&stateid
, &delegation
->stateid
);
2358 cred
= get_rpccred(delegation
->cred
);
2360 status
= nfs41_test_stateid(server
, &stateid
, cred
);
2361 trace_nfs4_test_delegation_stateid(state
, NULL
, status
);
2363 if (status
!= NFS_OK
) {
2364 /* Free the stateid unless the server explicitly
2365 * informs us the stateid is unrecognized. */
2366 if (status
!= -NFS4ERR_BAD_STATEID
)
2367 nfs41_free_stateid(server
, &stateid
, cred
);
2368 nfs_finish_clear_delegation_stateid(state
);
2375 * nfs41_check_open_stateid - possibly free an open stateid
2377 * @state: NFSv4 state for an inode
2379 * Returns NFS_OK if recovery for this stateid is now finished.
2380 * Otherwise a negative NFS4ERR value is returned.
2382 static int nfs41_check_open_stateid(struct nfs4_state
*state
)
2384 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
2385 nfs4_stateid
*stateid
= &state
->open_stateid
;
2386 struct rpc_cred
*cred
= state
->owner
->so_cred
;
2389 /* If a state reset has been done, test_stateid is unneeded */
2390 if ((test_bit(NFS_O_RDONLY_STATE
, &state
->flags
) == 0) &&
2391 (test_bit(NFS_O_WRONLY_STATE
, &state
->flags
) == 0) &&
2392 (test_bit(NFS_O_RDWR_STATE
, &state
->flags
) == 0))
2393 return -NFS4ERR_BAD_STATEID
;
2395 status
= nfs41_test_stateid(server
, stateid
, cred
);
2396 trace_nfs4_test_open_stateid(state
, NULL
, status
);
2397 if (status
!= NFS_OK
) {
2398 /* Free the stateid unless the server explicitly
2399 * informs us the stateid is unrecognized. */
2400 if (status
!= -NFS4ERR_BAD_STATEID
)
2401 nfs41_free_stateid(server
, stateid
, cred
);
2403 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
2404 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
2405 clear_bit(NFS_O_RDWR_STATE
, &state
->flags
);
2406 clear_bit(NFS_OPEN_STATE
, &state
->flags
);
2411 static int nfs41_open_expired(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
2415 nfs41_check_delegation_stateid(state
);
2416 status
= nfs41_check_open_stateid(state
);
2417 if (status
!= NFS_OK
)
2418 status
= nfs4_open_expired(sp
, state
);
2424 * on an EXCLUSIVE create, the server should send back a bitmask with FATTR4-*
2425 * fields corresponding to attributes that were used to store the verifier.
2426 * Make sure we clobber those fields in the later setattr call
2428 static inline void nfs4_exclusive_attrset(struct nfs4_opendata
*opendata
,
2429 struct iattr
*sattr
, struct nfs4_label
**label
)
2431 const u32
*attrset
= opendata
->o_res
.attrset
;
2433 if ((attrset
[1] & FATTR4_WORD1_TIME_ACCESS
) &&
2434 !(sattr
->ia_valid
& ATTR_ATIME_SET
))
2435 sattr
->ia_valid
|= ATTR_ATIME
;
2437 if ((attrset
[1] & FATTR4_WORD1_TIME_MODIFY
) &&
2438 !(sattr
->ia_valid
& ATTR_MTIME_SET
))
2439 sattr
->ia_valid
|= ATTR_MTIME
;
2441 /* Except MODE, it seems harmless of setting twice. */
2442 if ((attrset
[1] & FATTR4_WORD1_MODE
))
2443 sattr
->ia_valid
&= ~ATTR_MODE
;
2445 if (attrset
[2] & FATTR4_WORD2_SECURITY_LABEL
)
2449 static int _nfs4_open_and_get_state(struct nfs4_opendata
*opendata
,
2452 struct nfs_open_context
*ctx
)
2454 struct nfs4_state_owner
*sp
= opendata
->owner
;
2455 struct nfs_server
*server
= sp
->so_server
;
2456 struct dentry
*dentry
;
2457 struct nfs4_state
*state
;
2461 seq
= raw_seqcount_begin(&sp
->so_reclaim_seqcount
);
2463 ret
= _nfs4_proc_open(opendata
);
2467 state
= nfs4_opendata_to_nfs4_state(opendata
);
2468 ret
= PTR_ERR(state
);
2471 if (server
->caps
& NFS_CAP_POSIX_LOCK
)
2472 set_bit(NFS_STATE_POSIX_LOCKS
, &state
->flags
);
2474 dentry
= opendata
->dentry
;
2475 if (d_really_is_negative(dentry
)) {
2476 struct dentry
*alias
;
2478 alias
= d_exact_alias(dentry
, state
->inode
);
2480 alias
= d_splice_alias(igrab(state
->inode
), dentry
);
2481 /* d_splice_alias() can't fail here - it's a non-directory */
2484 ctx
->dentry
= dentry
= alias
;
2486 nfs_set_verifier(dentry
,
2487 nfs_save_change_attribute(d_inode(opendata
->dir
)));
2490 ret
= nfs4_opendata_access(sp
->so_cred
, opendata
, state
, fmode
, flags
);
2495 if (d_inode(dentry
) == state
->inode
) {
2496 nfs_inode_attach_open_context(ctx
);
2497 if (read_seqcount_retry(&sp
->so_reclaim_seqcount
, seq
))
2498 nfs4_schedule_stateid_recovery(server
, state
);
2505 * Returns a referenced nfs4_state
2507 static int _nfs4_do_open(struct inode
*dir
,
2508 struct nfs_open_context
*ctx
,
2510 struct iattr
*sattr
,
2511 struct nfs4_label
*label
,
2514 struct nfs4_state_owner
*sp
;
2515 struct nfs4_state
*state
= NULL
;
2516 struct nfs_server
*server
= NFS_SERVER(dir
);
2517 struct nfs4_opendata
*opendata
;
2518 struct dentry
*dentry
= ctx
->dentry
;
2519 struct rpc_cred
*cred
= ctx
->cred
;
2520 struct nfs4_threshold
**ctx_th
= &ctx
->mdsthreshold
;
2521 fmode_t fmode
= ctx
->mode
& (FMODE_READ
|FMODE_WRITE
|FMODE_EXEC
);
2522 enum open_claim_type4 claim
= NFS4_OPEN_CLAIM_NULL
;
2523 struct nfs4_label
*olabel
= NULL
;
2526 /* Protect against reboot recovery conflicts */
2528 sp
= nfs4_get_state_owner(server
, cred
, GFP_KERNEL
);
2530 dprintk("nfs4_do_open: nfs4_get_state_owner failed!\n");
2533 status
= nfs4_recover_expired_lease(server
);
2535 goto err_put_state_owner
;
2536 if (d_really_is_positive(dentry
))
2537 nfs4_return_incompatible_delegation(d_inode(dentry
), fmode
);
2539 if (d_really_is_positive(dentry
))
2540 claim
= NFS4_OPEN_CLAIM_FH
;
2541 opendata
= nfs4_opendata_alloc(dentry
, sp
, fmode
, flags
, sattr
,
2542 label
, claim
, GFP_KERNEL
);
2543 if (opendata
== NULL
)
2544 goto err_put_state_owner
;
2547 olabel
= nfs4_label_alloc(server
, GFP_KERNEL
);
2548 if (IS_ERR(olabel
)) {
2549 status
= PTR_ERR(olabel
);
2550 goto err_opendata_put
;
2554 if (server
->attr_bitmask
[2] & FATTR4_WORD2_MDSTHRESHOLD
) {
2555 if (!opendata
->f_attr
.mdsthreshold
) {
2556 opendata
->f_attr
.mdsthreshold
= pnfs_mdsthreshold_alloc();
2557 if (!opendata
->f_attr
.mdsthreshold
)
2558 goto err_free_label
;
2560 opendata
->o_arg
.open_bitmap
= &nfs4_pnfs_open_bitmap
[0];
2562 if (d_really_is_positive(dentry
))
2563 opendata
->state
= nfs4_get_open_state(d_inode(dentry
), sp
);
2565 status
= _nfs4_open_and_get_state(opendata
, fmode
, flags
, ctx
);
2567 goto err_free_label
;
2570 if ((opendata
->o_arg
.open_flags
& (O_CREAT
|O_EXCL
)) == (O_CREAT
|O_EXCL
) &&
2571 (opendata
->o_arg
.createmode
!= NFS4_CREATE_GUARDED
)) {
2572 nfs4_exclusive_attrset(opendata
, sattr
, &label
);
2574 * send create attributes which was not set by open
2575 * with an extra setattr.
2577 if (sattr
->ia_valid
& NFS4_VALID_ATTRS
) {
2578 nfs_fattr_init(opendata
->o_res
.f_attr
);
2579 status
= nfs4_do_setattr(state
->inode
, cred
,
2580 opendata
->o_res
.f_attr
, sattr
,
2581 state
, label
, olabel
);
2583 nfs_setattr_update_inode(state
->inode
, sattr
,
2584 opendata
->o_res
.f_attr
);
2585 nfs_setsecurity(state
->inode
, opendata
->o_res
.f_attr
, olabel
);
2589 if (opened
&& opendata
->file_created
)
2590 *opened
|= FILE_CREATED
;
2592 if (pnfs_use_threshold(ctx_th
, opendata
->f_attr
.mdsthreshold
, server
)) {
2593 *ctx_th
= opendata
->f_attr
.mdsthreshold
;
2594 opendata
->f_attr
.mdsthreshold
= NULL
;
2597 nfs4_label_free(olabel
);
2599 nfs4_opendata_put(opendata
);
2600 nfs4_put_state_owner(sp
);
2603 nfs4_label_free(olabel
);
2605 nfs4_opendata_put(opendata
);
2606 err_put_state_owner
:
2607 nfs4_put_state_owner(sp
);
2613 static struct nfs4_state
*nfs4_do_open(struct inode
*dir
,
2614 struct nfs_open_context
*ctx
,
2616 struct iattr
*sattr
,
2617 struct nfs4_label
*label
,
2620 struct nfs_server
*server
= NFS_SERVER(dir
);
2621 struct nfs4_exception exception
= { };
2622 struct nfs4_state
*res
;
2626 status
= _nfs4_do_open(dir
, ctx
, flags
, sattr
, label
, opened
);
2628 trace_nfs4_open_file(ctx
, flags
, status
);
2631 /* NOTE: BAD_SEQID means the server and client disagree about the
2632 * book-keeping w.r.t. state-changing operations
2633 * (OPEN/CLOSE/LOCK/LOCKU...)
2634 * It is actually a sign of a bug on the client or on the server.
2636 * If we receive a BAD_SEQID error in the particular case of
2637 * doing an OPEN, we assume that nfs_increment_open_seqid() will
2638 * have unhashed the old state_owner for us, and that we can
2639 * therefore safely retry using a new one. We should still warn
2640 * the user though...
2642 if (status
== -NFS4ERR_BAD_SEQID
) {
2643 pr_warn_ratelimited("NFS: v4 server %s "
2644 " returned a bad sequence-id error!\n",
2645 NFS_SERVER(dir
)->nfs_client
->cl_hostname
);
2646 exception
.retry
= 1;
2650 * BAD_STATEID on OPEN means that the server cancelled our
2651 * state before it received the OPEN_CONFIRM.
2652 * Recover by retrying the request as per the discussion
2653 * on Page 181 of RFC3530.
2655 if (status
== -NFS4ERR_BAD_STATEID
) {
2656 exception
.retry
= 1;
2659 if (status
== -EAGAIN
) {
2660 /* We must have found a delegation */
2661 exception
.retry
= 1;
2664 if (nfs4_clear_cap_atomic_open_v1(server
, status
, &exception
))
2666 res
= ERR_PTR(nfs4_handle_exception(server
,
2667 status
, &exception
));
2668 } while (exception
.retry
);
2672 static int _nfs4_do_setattr(struct inode
*inode
, struct rpc_cred
*cred
,
2673 struct nfs_fattr
*fattr
, struct iattr
*sattr
,
2674 struct nfs4_state
*state
, struct nfs4_label
*ilabel
,
2675 struct nfs4_label
*olabel
)
2677 struct nfs_server
*server
= NFS_SERVER(inode
);
2678 struct nfs_setattrargs arg
= {
2679 .fh
= NFS_FH(inode
),
2682 .bitmask
= server
->attr_bitmask
,
2685 struct nfs_setattrres res
= {
2690 struct rpc_message msg
= {
2691 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETATTR
],
2696 struct rpc_cred
*delegation_cred
= NULL
;
2697 unsigned long timestamp
= jiffies
;
2702 arg
.bitmask
= nfs4_bitmask(server
, ilabel
);
2704 arg
.bitmask
= nfs4_bitmask(server
, olabel
);
2706 nfs_fattr_init(fattr
);
2708 /* Servers should only apply open mode checks for file size changes */
2709 truncate
= (sattr
->ia_valid
& ATTR_SIZE
) ? true : false;
2710 fmode
= truncate
? FMODE_WRITE
: FMODE_READ
;
2712 if (nfs4_copy_delegation_stateid(inode
, fmode
, &arg
.stateid
, &delegation_cred
)) {
2713 /* Use that stateid */
2714 } else if (truncate
&& state
!= NULL
) {
2715 struct nfs_lockowner lockowner
= {
2716 .l_owner
= current
->files
,
2717 .l_pid
= current
->tgid
,
2719 if (!nfs4_valid_open_stateid(state
))
2721 if (nfs4_select_rw_stateid(state
, FMODE_WRITE
, &lockowner
,
2722 &arg
.stateid
, &delegation_cred
) == -EIO
)
2725 nfs4_stateid_copy(&arg
.stateid
, &zero_stateid
);
2726 if (delegation_cred
)
2727 msg
.rpc_cred
= delegation_cred
;
2729 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
2731 put_rpccred(delegation_cred
);
2732 if (status
== 0 && state
!= NULL
)
2733 renew_lease(server
, timestamp
);
2734 trace_nfs4_setattr(inode
, &arg
.stateid
, status
);
2738 static int nfs4_do_setattr(struct inode
*inode
, struct rpc_cred
*cred
,
2739 struct nfs_fattr
*fattr
, struct iattr
*sattr
,
2740 struct nfs4_state
*state
, struct nfs4_label
*ilabel
,
2741 struct nfs4_label
*olabel
)
2743 struct nfs_server
*server
= NFS_SERVER(inode
);
2744 struct nfs4_exception exception
= {
2750 err
= _nfs4_do_setattr(inode
, cred
, fattr
, sattr
, state
, ilabel
, olabel
);
2752 case -NFS4ERR_OPENMODE
:
2753 if (!(sattr
->ia_valid
& ATTR_SIZE
)) {
2754 pr_warn_once("NFSv4: server %s is incorrectly "
2755 "applying open mode checks to "
2756 "a SETATTR that is not "
2757 "changing file size.\n",
2758 server
->nfs_client
->cl_hostname
);
2760 if (state
&& !(state
->state
& FMODE_WRITE
)) {
2762 if (sattr
->ia_valid
& ATTR_OPEN
)
2767 err
= nfs4_handle_exception(server
, err
, &exception
);
2768 } while (exception
.retry
);
2774 nfs4_wait_on_layoutreturn(struct inode
*inode
, struct rpc_task
*task
)
2776 if (inode
== NULL
|| !nfs_have_layout(inode
))
2779 return pnfs_wait_on_layoutreturn(inode
, task
);
2782 struct nfs4_closedata
{
2783 struct inode
*inode
;
2784 struct nfs4_state
*state
;
2785 struct nfs_closeargs arg
;
2786 struct nfs_closeres res
;
2787 struct nfs_fattr fattr
;
2788 unsigned long timestamp
;
2793 static void nfs4_free_closedata(void *data
)
2795 struct nfs4_closedata
*calldata
= data
;
2796 struct nfs4_state_owner
*sp
= calldata
->state
->owner
;
2797 struct super_block
*sb
= calldata
->state
->inode
->i_sb
;
2800 pnfs_roc_release(calldata
->state
->inode
);
2801 nfs4_put_open_state(calldata
->state
);
2802 nfs_free_seqid(calldata
->arg
.seqid
);
2803 nfs4_put_state_owner(sp
);
2804 nfs_sb_deactive(sb
);
2808 static void nfs4_close_done(struct rpc_task
*task
, void *data
)
2810 struct nfs4_closedata
*calldata
= data
;
2811 struct nfs4_state
*state
= calldata
->state
;
2812 struct nfs_server
*server
= NFS_SERVER(calldata
->inode
);
2813 nfs4_stateid
*res_stateid
= NULL
;
2815 dprintk("%s: begin!\n", __func__
);
2816 if (!nfs4_sequence_done(task
, &calldata
->res
.seq_res
))
2818 trace_nfs4_close(state
, &calldata
->arg
, &calldata
->res
, task
->tk_status
);
2819 /* hmm. we are done with the inode, and in the process of freeing
2820 * the state_owner. we keep this around to process errors
2822 switch (task
->tk_status
) {
2824 res_stateid
= &calldata
->res
.stateid
;
2826 pnfs_roc_set_barrier(state
->inode
,
2827 calldata
->roc_barrier
);
2828 renew_lease(server
, calldata
->timestamp
);
2830 case -NFS4ERR_ADMIN_REVOKED
:
2831 case -NFS4ERR_STALE_STATEID
:
2832 case -NFS4ERR_OLD_STATEID
:
2833 case -NFS4ERR_BAD_STATEID
:
2834 case -NFS4ERR_EXPIRED
:
2835 if (!nfs4_stateid_match(&calldata
->arg
.stateid
,
2836 &state
->open_stateid
)) {
2837 rpc_restart_call_prepare(task
);
2840 if (calldata
->arg
.fmode
== 0)
2843 if (nfs4_async_handle_error(task
, server
, state
, NULL
) == -EAGAIN
) {
2844 rpc_restart_call_prepare(task
);
2848 nfs_clear_open_stateid(state
, &calldata
->arg
.stateid
,
2849 res_stateid
, calldata
->arg
.fmode
);
2851 nfs_release_seqid(calldata
->arg
.seqid
);
2852 nfs_refresh_inode(calldata
->inode
, calldata
->res
.fattr
);
2853 dprintk("%s: done, ret = %d!\n", __func__
, task
->tk_status
);
2856 static void nfs4_close_prepare(struct rpc_task
*task
, void *data
)
2858 struct nfs4_closedata
*calldata
= data
;
2859 struct nfs4_state
*state
= calldata
->state
;
2860 struct inode
*inode
= calldata
->inode
;
2861 bool is_rdonly
, is_wronly
, is_rdwr
;
2864 dprintk("%s: begin!\n", __func__
);
2865 if (nfs_wait_on_sequence(calldata
->arg
.seqid
, task
) != 0)
2868 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_DOWNGRADE
];
2869 spin_lock(&state
->owner
->so_lock
);
2870 is_rdwr
= test_bit(NFS_O_RDWR_STATE
, &state
->flags
);
2871 is_rdonly
= test_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
2872 is_wronly
= test_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
2873 nfs4_stateid_copy(&calldata
->arg
.stateid
, &state
->open_stateid
);
2874 /* Calculate the change in open mode */
2875 calldata
->arg
.fmode
= 0;
2876 if (state
->n_rdwr
== 0) {
2877 if (state
->n_rdonly
== 0)
2878 call_close
|= is_rdonly
;
2880 calldata
->arg
.fmode
|= FMODE_READ
;
2881 if (state
->n_wronly
== 0)
2882 call_close
|= is_wronly
;
2884 calldata
->arg
.fmode
|= FMODE_WRITE
;
2886 calldata
->arg
.fmode
|= FMODE_READ
|FMODE_WRITE
;
2888 if (calldata
->arg
.fmode
== 0)
2889 call_close
|= is_rdwr
;
2891 if (!nfs4_valid_open_stateid(state
))
2893 spin_unlock(&state
->owner
->so_lock
);
2896 /* Note: exit _without_ calling nfs4_close_done */
2900 if (nfs4_wait_on_layoutreturn(inode
, task
)) {
2901 nfs_release_seqid(calldata
->arg
.seqid
);
2905 if (calldata
->arg
.fmode
== 0)
2906 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CLOSE
];
2908 pnfs_roc_get_barrier(inode
, &calldata
->roc_barrier
);
2910 calldata
->arg
.share_access
=
2911 nfs4_map_atomic_open_share(NFS_SERVER(inode
),
2912 calldata
->arg
.fmode
, 0);
2914 nfs_fattr_init(calldata
->res
.fattr
);
2915 calldata
->timestamp
= jiffies
;
2916 if (nfs4_setup_sequence(NFS_SERVER(inode
),
2917 &calldata
->arg
.seq_args
,
2918 &calldata
->res
.seq_res
,
2920 nfs_release_seqid(calldata
->arg
.seqid
);
2921 dprintk("%s: done!\n", __func__
);
2924 task
->tk_action
= NULL
;
2926 nfs4_sequence_done(task
, &calldata
->res
.seq_res
);
2929 static const struct rpc_call_ops nfs4_close_ops
= {
2930 .rpc_call_prepare
= nfs4_close_prepare
,
2931 .rpc_call_done
= nfs4_close_done
,
2932 .rpc_release
= nfs4_free_closedata
,
2935 static bool nfs4_roc(struct inode
*inode
)
2937 if (!nfs_have_layout(inode
))
2939 return pnfs_roc(inode
);
2943 * It is possible for data to be read/written from a mem-mapped file
2944 * after the sys_close call (which hits the vfs layer as a flush).
2945 * This means that we can't safely call nfsv4 close on a file until
2946 * the inode is cleared. This in turn means that we are not good
2947 * NFSv4 citizens - we do not indicate to the server to update the file's
2948 * share state even when we are done with one of the three share
2949 * stateid's in the inode.
2951 * NOTE: Caller must be holding the sp->so_owner semaphore!
2953 int nfs4_do_close(struct nfs4_state
*state
, gfp_t gfp_mask
, int wait
)
2955 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
2956 struct nfs_seqid
*(*alloc_seqid
)(struct nfs_seqid_counter
*, gfp_t
);
2957 struct nfs4_closedata
*calldata
;
2958 struct nfs4_state_owner
*sp
= state
->owner
;
2959 struct rpc_task
*task
;
2960 struct rpc_message msg
= {
2961 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CLOSE
],
2962 .rpc_cred
= state
->owner
->so_cred
,
2964 struct rpc_task_setup task_setup_data
= {
2965 .rpc_client
= server
->client
,
2966 .rpc_message
= &msg
,
2967 .callback_ops
= &nfs4_close_ops
,
2968 .workqueue
= nfsiod_workqueue
,
2969 .flags
= RPC_TASK_ASYNC
,
2971 int status
= -ENOMEM
;
2973 nfs4_state_protect(server
->nfs_client
, NFS_SP4_MACH_CRED_CLEANUP
,
2974 &task_setup_data
.rpc_client
, &msg
);
2976 calldata
= kzalloc(sizeof(*calldata
), gfp_mask
);
2977 if (calldata
== NULL
)
2979 nfs4_init_sequence(&calldata
->arg
.seq_args
, &calldata
->res
.seq_res
, 1);
2980 calldata
->inode
= state
->inode
;
2981 calldata
->state
= state
;
2982 calldata
->arg
.fh
= NFS_FH(state
->inode
);
2983 /* Serialization for the sequence id */
2984 alloc_seqid
= server
->nfs_client
->cl_mvops
->alloc_seqid
;
2985 calldata
->arg
.seqid
= alloc_seqid(&state
->owner
->so_seqid
, gfp_mask
);
2986 if (IS_ERR(calldata
->arg
.seqid
))
2987 goto out_free_calldata
;
2988 calldata
->arg
.fmode
= 0;
2989 calldata
->arg
.bitmask
= server
->cache_consistency_bitmask
;
2990 calldata
->res
.fattr
= &calldata
->fattr
;
2991 calldata
->res
.seqid
= calldata
->arg
.seqid
;
2992 calldata
->res
.server
= server
;
2993 calldata
->roc
= nfs4_roc(state
->inode
);
2994 nfs_sb_active(calldata
->inode
->i_sb
);
2996 msg
.rpc_argp
= &calldata
->arg
;
2997 msg
.rpc_resp
= &calldata
->res
;
2998 task_setup_data
.callback_data
= calldata
;
2999 task
= rpc_run_task(&task_setup_data
);
3001 return PTR_ERR(task
);
3004 status
= rpc_wait_for_completion_task(task
);
3010 nfs4_put_open_state(state
);
3011 nfs4_put_state_owner(sp
);
3015 static struct inode
*
3016 nfs4_atomic_open(struct inode
*dir
, struct nfs_open_context
*ctx
,
3017 int open_flags
, struct iattr
*attr
, int *opened
)
3019 struct nfs4_state
*state
;
3020 struct nfs4_label l
= {0, 0, 0, NULL
}, *label
= NULL
;
3022 label
= nfs4_label_init_security(dir
, ctx
->dentry
, attr
, &l
);
3024 /* Protect against concurrent sillydeletes */
3025 state
= nfs4_do_open(dir
, ctx
, open_flags
, attr
, label
, opened
);
3027 nfs4_label_release_security(label
);
3030 return ERR_CAST(state
);
3031 return state
->inode
;
3034 static void nfs4_close_context(struct nfs_open_context
*ctx
, int is_sync
)
3036 if (ctx
->state
== NULL
)
3039 nfs4_close_sync(ctx
->state
, ctx
->mode
);
3041 nfs4_close_state(ctx
->state
, ctx
->mode
);
3044 #define FATTR4_WORD1_NFS40_MASK (2*FATTR4_WORD1_MOUNTED_ON_FILEID - 1UL)
3045 #define FATTR4_WORD2_NFS41_MASK (2*FATTR4_WORD2_SUPPATTR_EXCLCREAT - 1UL)
3046 #define FATTR4_WORD2_NFS42_MASK (2*FATTR4_WORD2_SECURITY_LABEL - 1UL)
3048 static int _nfs4_server_capabilities(struct nfs_server
*server
, struct nfs_fh
*fhandle
)
3050 u32 bitmask
[3] = {}, minorversion
= server
->nfs_client
->cl_minorversion
;
3051 struct nfs4_server_caps_arg args
= {
3055 struct nfs4_server_caps_res res
= {};
3056 struct rpc_message msg
= {
3057 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SERVER_CAPS
],
3063 bitmask
[0] = FATTR4_WORD0_SUPPORTED_ATTRS
|
3064 FATTR4_WORD0_FH_EXPIRE_TYPE
|
3065 FATTR4_WORD0_LINK_SUPPORT
|
3066 FATTR4_WORD0_SYMLINK_SUPPORT
|
3067 FATTR4_WORD0_ACLSUPPORT
;
3069 bitmask
[2] = FATTR4_WORD2_SUPPATTR_EXCLCREAT
;
3071 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3073 /* Sanity check the server answers */
3074 switch (minorversion
) {
3076 res
.attr_bitmask
[1] &= FATTR4_WORD1_NFS40_MASK
;
3077 res
.attr_bitmask
[2] = 0;
3080 res
.attr_bitmask
[2] &= FATTR4_WORD2_NFS41_MASK
;
3083 res
.attr_bitmask
[2] &= FATTR4_WORD2_NFS42_MASK
;
3085 memcpy(server
->attr_bitmask
, res
.attr_bitmask
, sizeof(server
->attr_bitmask
));
3086 server
->caps
&= ~(NFS_CAP_ACLS
|NFS_CAP_HARDLINKS
|
3087 NFS_CAP_SYMLINKS
|NFS_CAP_FILEID
|
3088 NFS_CAP_MODE
|NFS_CAP_NLINK
|NFS_CAP_OWNER
|
3089 NFS_CAP_OWNER_GROUP
|NFS_CAP_ATIME
|
3090 NFS_CAP_CTIME
|NFS_CAP_MTIME
|
3091 NFS_CAP_SECURITY_LABEL
);
3092 if (res
.attr_bitmask
[0] & FATTR4_WORD0_ACL
&&
3093 res
.acl_bitmask
& ACL4_SUPPORT_ALLOW_ACL
)
3094 server
->caps
|= NFS_CAP_ACLS
;
3095 if (res
.has_links
!= 0)
3096 server
->caps
|= NFS_CAP_HARDLINKS
;
3097 if (res
.has_symlinks
!= 0)
3098 server
->caps
|= NFS_CAP_SYMLINKS
;
3099 if (res
.attr_bitmask
[0] & FATTR4_WORD0_FILEID
)
3100 server
->caps
|= NFS_CAP_FILEID
;
3101 if (res
.attr_bitmask
[1] & FATTR4_WORD1_MODE
)
3102 server
->caps
|= NFS_CAP_MODE
;
3103 if (res
.attr_bitmask
[1] & FATTR4_WORD1_NUMLINKS
)
3104 server
->caps
|= NFS_CAP_NLINK
;
3105 if (res
.attr_bitmask
[1] & FATTR4_WORD1_OWNER
)
3106 server
->caps
|= NFS_CAP_OWNER
;
3107 if (res
.attr_bitmask
[1] & FATTR4_WORD1_OWNER_GROUP
)
3108 server
->caps
|= NFS_CAP_OWNER_GROUP
;
3109 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_ACCESS
)
3110 server
->caps
|= NFS_CAP_ATIME
;
3111 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_METADATA
)
3112 server
->caps
|= NFS_CAP_CTIME
;
3113 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_MODIFY
)
3114 server
->caps
|= NFS_CAP_MTIME
;
3115 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
3116 if (res
.attr_bitmask
[2] & FATTR4_WORD2_SECURITY_LABEL
)
3117 server
->caps
|= NFS_CAP_SECURITY_LABEL
;
3119 memcpy(server
->attr_bitmask_nl
, res
.attr_bitmask
,
3120 sizeof(server
->attr_bitmask
));
3121 server
->attr_bitmask_nl
[2] &= ~FATTR4_WORD2_SECURITY_LABEL
;
3123 memcpy(server
->cache_consistency_bitmask
, res
.attr_bitmask
, sizeof(server
->cache_consistency_bitmask
));
3124 server
->cache_consistency_bitmask
[0] &= FATTR4_WORD0_CHANGE
|FATTR4_WORD0_SIZE
;
3125 server
->cache_consistency_bitmask
[1] &= FATTR4_WORD1_TIME_METADATA
|FATTR4_WORD1_TIME_MODIFY
;
3126 server
->cache_consistency_bitmask
[2] = 0;
3127 memcpy(server
->exclcreat_bitmask
, res
.exclcreat_bitmask
,
3128 sizeof(server
->exclcreat_bitmask
));
3129 server
->acl_bitmask
= res
.acl_bitmask
;
3130 server
->fh_expire_type
= res
.fh_expire_type
;
3136 int nfs4_server_capabilities(struct nfs_server
*server
, struct nfs_fh
*fhandle
)
3138 struct nfs4_exception exception
= { };
3141 err
= nfs4_handle_exception(server
,
3142 _nfs4_server_capabilities(server
, fhandle
),
3144 } while (exception
.retry
);
3148 static int _nfs4_lookup_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3149 struct nfs_fsinfo
*info
)
3152 struct nfs4_lookup_root_arg args
= {
3155 struct nfs4_lookup_res res
= {
3157 .fattr
= info
->fattr
,
3160 struct rpc_message msg
= {
3161 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOOKUP_ROOT
],
3166 bitmask
[0] = nfs4_fattr_bitmap
[0];
3167 bitmask
[1] = nfs4_fattr_bitmap
[1];
3169 * Process the label in the upcoming getfattr
3171 bitmask
[2] = nfs4_fattr_bitmap
[2] & ~FATTR4_WORD2_SECURITY_LABEL
;
3173 nfs_fattr_init(info
->fattr
);
3174 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3177 static int nfs4_lookup_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3178 struct nfs_fsinfo
*info
)
3180 struct nfs4_exception exception
= { };
3183 err
= _nfs4_lookup_root(server
, fhandle
, info
);
3184 trace_nfs4_lookup_root(server
, fhandle
, info
->fattr
, err
);
3187 case -NFS4ERR_WRONGSEC
:
3190 err
= nfs4_handle_exception(server
, err
, &exception
);
3192 } while (exception
.retry
);
3197 static int nfs4_lookup_root_sec(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3198 struct nfs_fsinfo
*info
, rpc_authflavor_t flavor
)
3200 struct rpc_auth_create_args auth_args
= {
3201 .pseudoflavor
= flavor
,
3203 struct rpc_auth
*auth
;
3206 auth
= rpcauth_create(&auth_args
, server
->client
);
3211 ret
= nfs4_lookup_root(server
, fhandle
, info
);
3217 * Retry pseudoroot lookup with various security flavors. We do this when:
3219 * NFSv4.0: the PUTROOTFH operation returns NFS4ERR_WRONGSEC
3220 * NFSv4.1: the server does not support the SECINFO_NO_NAME operation
3222 * Returns zero on success, or a negative NFS4ERR value, or a
3223 * negative errno value.
3225 static int nfs4_find_root_sec(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3226 struct nfs_fsinfo
*info
)
3228 /* Per 3530bis 15.33.5 */
3229 static const rpc_authflavor_t flav_array
[] = {
3233 RPC_AUTH_UNIX
, /* courtesy */
3236 int status
= -EPERM
;
3239 if (server
->auth_info
.flavor_len
> 0) {
3240 /* try each flavor specified by user */
3241 for (i
= 0; i
< server
->auth_info
.flavor_len
; i
++) {
3242 status
= nfs4_lookup_root_sec(server
, fhandle
, info
,
3243 server
->auth_info
.flavors
[i
]);
3244 if (status
== -NFS4ERR_WRONGSEC
|| status
== -EACCES
)
3249 /* no flavors specified by user, try default list */
3250 for (i
= 0; i
< ARRAY_SIZE(flav_array
); i
++) {
3251 status
= nfs4_lookup_root_sec(server
, fhandle
, info
,
3253 if (status
== -NFS4ERR_WRONGSEC
|| status
== -EACCES
)
3260 * -EACCESS could mean that the user doesn't have correct permissions
3261 * to access the mount. It could also mean that we tried to mount
3262 * with a gss auth flavor, but rpc.gssd isn't running. Either way,
3263 * existing mount programs don't handle -EACCES very well so it should
3264 * be mapped to -EPERM instead.
3266 if (status
== -EACCES
)
3271 static int nfs4_do_find_root_sec(struct nfs_server
*server
,
3272 struct nfs_fh
*fhandle
, struct nfs_fsinfo
*info
)
3274 int mv
= server
->nfs_client
->cl_minorversion
;
3275 return nfs_v4_minor_ops
[mv
]->find_root_sec(server
, fhandle
, info
);
3279 * nfs4_proc_get_rootfh - get file handle for server's pseudoroot
3280 * @server: initialized nfs_server handle
3281 * @fhandle: we fill in the pseudo-fs root file handle
3282 * @info: we fill in an FSINFO struct
3283 * @auth_probe: probe the auth flavours
3285 * Returns zero on success, or a negative errno.
3287 int nfs4_proc_get_rootfh(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3288 struct nfs_fsinfo
*info
,
3294 status
= nfs4_lookup_root(server
, fhandle
, info
);
3296 if (auth_probe
|| status
== NFS4ERR_WRONGSEC
)
3297 status
= nfs4_do_find_root_sec(server
, fhandle
, info
);
3300 status
= nfs4_server_capabilities(server
, fhandle
);
3302 status
= nfs4_do_fsinfo(server
, fhandle
, info
);
3304 return nfs4_map_errors(status
);
3307 static int nfs4_proc_get_root(struct nfs_server
*server
, struct nfs_fh
*mntfh
,
3308 struct nfs_fsinfo
*info
)
3311 struct nfs_fattr
*fattr
= info
->fattr
;
3312 struct nfs4_label
*label
= NULL
;
3314 error
= nfs4_server_capabilities(server
, mntfh
);
3316 dprintk("nfs4_get_root: getcaps error = %d\n", -error
);
3320 label
= nfs4_label_alloc(server
, GFP_KERNEL
);
3322 return PTR_ERR(label
);
3324 error
= nfs4_proc_getattr(server
, mntfh
, fattr
, label
);
3326 dprintk("nfs4_get_root: getattr error = %d\n", -error
);
3327 goto err_free_label
;
3330 if (fattr
->valid
& NFS_ATTR_FATTR_FSID
&&
3331 !nfs_fsid_equal(&server
->fsid
, &fattr
->fsid
))
3332 memcpy(&server
->fsid
, &fattr
->fsid
, sizeof(server
->fsid
));
3335 nfs4_label_free(label
);
3341 * Get locations and (maybe) other attributes of a referral.
3342 * Note that we'll actually follow the referral later when
3343 * we detect fsid mismatch in inode revalidation
3345 static int nfs4_get_referral(struct rpc_clnt
*client
, struct inode
*dir
,
3346 const struct qstr
*name
, struct nfs_fattr
*fattr
,
3347 struct nfs_fh
*fhandle
)
3349 int status
= -ENOMEM
;
3350 struct page
*page
= NULL
;
3351 struct nfs4_fs_locations
*locations
= NULL
;
3353 page
= alloc_page(GFP_KERNEL
);
3356 locations
= kmalloc(sizeof(struct nfs4_fs_locations
), GFP_KERNEL
);
3357 if (locations
== NULL
)
3360 status
= nfs4_proc_fs_locations(client
, dir
, name
, locations
, page
);
3365 * If the fsid didn't change, this is a migration event, not a
3366 * referral. Cause us to drop into the exception handler, which
3367 * will kick off migration recovery.
3369 if (nfs_fsid_equal(&NFS_SERVER(dir
)->fsid
, &locations
->fattr
.fsid
)) {
3370 dprintk("%s: server did not return a different fsid for"
3371 " a referral at %s\n", __func__
, name
->name
);
3372 status
= -NFS4ERR_MOVED
;
3375 /* Fixup attributes for the nfs_lookup() call to nfs_fhget() */
3376 nfs_fixup_referral_attributes(&locations
->fattr
);
3378 /* replace the lookup nfs_fattr with the locations nfs_fattr */
3379 memcpy(fattr
, &locations
->fattr
, sizeof(struct nfs_fattr
));
3380 memset(fhandle
, 0, sizeof(struct nfs_fh
));
3388 static int _nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3389 struct nfs_fattr
*fattr
, struct nfs4_label
*label
)
3391 struct nfs4_getattr_arg args
= {
3393 .bitmask
= server
->attr_bitmask
,
3395 struct nfs4_getattr_res res
= {
3400 struct rpc_message msg
= {
3401 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETATTR
],
3406 args
.bitmask
= nfs4_bitmask(server
, label
);
3408 nfs_fattr_init(fattr
);
3409 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3412 static int nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3413 struct nfs_fattr
*fattr
, struct nfs4_label
*label
)
3415 struct nfs4_exception exception
= { };
3418 err
= _nfs4_proc_getattr(server
, fhandle
, fattr
, label
);
3419 trace_nfs4_getattr(server
, fhandle
, fattr
, err
);
3420 err
= nfs4_handle_exception(server
, err
,
3422 } while (exception
.retry
);
3427 * The file is not closed if it is opened due to the a request to change
3428 * the size of the file. The open call will not be needed once the
3429 * VFS layer lookup-intents are implemented.
3431 * Close is called when the inode is destroyed.
3432 * If we haven't opened the file for O_WRONLY, we
3433 * need to in the size_change case to obtain a stateid.
3436 * Because OPEN is always done by name in nfsv4, it is
3437 * possible that we opened a different file by the same
3438 * name. We can recognize this race condition, but we
3439 * can't do anything about it besides returning an error.
3441 * This will be fixed with VFS changes (lookup-intent).
3444 nfs4_proc_setattr(struct dentry
*dentry
, struct nfs_fattr
*fattr
,
3445 struct iattr
*sattr
)
3447 struct inode
*inode
= d_inode(dentry
);
3448 struct rpc_cred
*cred
= NULL
;
3449 struct nfs4_state
*state
= NULL
;
3450 struct nfs4_label
*label
= NULL
;
3453 if (pnfs_ld_layoutret_on_setattr(inode
) &&
3454 sattr
->ia_valid
& ATTR_SIZE
&&
3455 sattr
->ia_size
< i_size_read(inode
))
3456 pnfs_commit_and_return_layout(inode
);
3458 nfs_fattr_init(fattr
);
3460 /* Deal with open(O_TRUNC) */
3461 if (sattr
->ia_valid
& ATTR_OPEN
)
3462 sattr
->ia_valid
&= ~(ATTR_MTIME
|ATTR_CTIME
);
3464 /* Optimization: if the end result is no change, don't RPC */
3465 if ((sattr
->ia_valid
& ~(ATTR_FILE
|ATTR_OPEN
)) == 0)
3468 /* Search for an existing open(O_WRITE) file */
3469 if (sattr
->ia_valid
& ATTR_FILE
) {
3470 struct nfs_open_context
*ctx
;
3472 ctx
= nfs_file_open_context(sattr
->ia_file
);
3479 label
= nfs4_label_alloc(NFS_SERVER(inode
), GFP_KERNEL
);
3481 return PTR_ERR(label
);
3483 status
= nfs4_do_setattr(inode
, cred
, fattr
, sattr
, state
, NULL
, label
);
3485 nfs_setattr_update_inode(inode
, sattr
, fattr
);
3486 nfs_setsecurity(inode
, fattr
, label
);
3488 nfs4_label_free(label
);
3492 static int _nfs4_proc_lookup(struct rpc_clnt
*clnt
, struct inode
*dir
,
3493 const struct qstr
*name
, struct nfs_fh
*fhandle
,
3494 struct nfs_fattr
*fattr
, struct nfs4_label
*label
)
3496 struct nfs_server
*server
= NFS_SERVER(dir
);
3498 struct nfs4_lookup_arg args
= {
3499 .bitmask
= server
->attr_bitmask
,
3500 .dir_fh
= NFS_FH(dir
),
3503 struct nfs4_lookup_res res
= {
3509 struct rpc_message msg
= {
3510 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOOKUP
],
3515 args
.bitmask
= nfs4_bitmask(server
, label
);
3517 nfs_fattr_init(fattr
);
3519 dprintk("NFS call lookup %s\n", name
->name
);
3520 status
= nfs4_call_sync(clnt
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3521 dprintk("NFS reply lookup: %d\n", status
);
3525 static void nfs_fixup_secinfo_attributes(struct nfs_fattr
*fattr
)
3527 fattr
->valid
|= NFS_ATTR_FATTR_TYPE
| NFS_ATTR_FATTR_MODE
|
3528 NFS_ATTR_FATTR_NLINK
| NFS_ATTR_FATTR_MOUNTPOINT
;
3529 fattr
->mode
= S_IFDIR
| S_IRUGO
| S_IXUGO
;
3533 static int nfs4_proc_lookup_common(struct rpc_clnt
**clnt
, struct inode
*dir
,
3534 struct qstr
*name
, struct nfs_fh
*fhandle
,
3535 struct nfs_fattr
*fattr
, struct nfs4_label
*label
)
3537 struct nfs4_exception exception
= { };
3538 struct rpc_clnt
*client
= *clnt
;
3541 err
= _nfs4_proc_lookup(client
, dir
, name
, fhandle
, fattr
, label
);
3542 trace_nfs4_lookup(dir
, name
, err
);
3544 case -NFS4ERR_BADNAME
:
3547 case -NFS4ERR_MOVED
:
3548 err
= nfs4_get_referral(client
, dir
, name
, fattr
, fhandle
);
3549 if (err
== -NFS4ERR_MOVED
)
3550 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
, &exception
);
3552 case -NFS4ERR_WRONGSEC
:
3554 if (client
!= *clnt
)
3556 client
= nfs4_negotiate_security(client
, dir
, name
);
3558 return PTR_ERR(client
);
3560 exception
.retry
= 1;
3563 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
, &exception
);
3565 } while (exception
.retry
);
3570 else if (client
!= *clnt
)
3571 rpc_shutdown_client(client
);
3576 static int nfs4_proc_lookup(struct inode
*dir
, struct qstr
*name
,
3577 struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
,
3578 struct nfs4_label
*label
)
3581 struct rpc_clnt
*client
= NFS_CLIENT(dir
);
3583 status
= nfs4_proc_lookup_common(&client
, dir
, name
, fhandle
, fattr
, label
);
3584 if (client
!= NFS_CLIENT(dir
)) {
3585 rpc_shutdown_client(client
);
3586 nfs_fixup_secinfo_attributes(fattr
);
3592 nfs4_proc_lookup_mountpoint(struct inode
*dir
, struct qstr
*name
,
3593 struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
3595 struct rpc_clnt
*client
= NFS_CLIENT(dir
);
3598 status
= nfs4_proc_lookup_common(&client
, dir
, name
, fhandle
, fattr
, NULL
);
3600 return ERR_PTR(status
);
3601 return (client
== NFS_CLIENT(dir
)) ? rpc_clone_client(client
) : client
;
3604 static int _nfs4_proc_access(struct inode
*inode
, struct nfs_access_entry
*entry
)
3606 struct nfs_server
*server
= NFS_SERVER(inode
);
3607 struct nfs4_accessargs args
= {
3608 .fh
= NFS_FH(inode
),
3609 .bitmask
= server
->cache_consistency_bitmask
,
3611 struct nfs4_accessres res
= {
3614 struct rpc_message msg
= {
3615 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_ACCESS
],
3618 .rpc_cred
= entry
->cred
,
3620 int mode
= entry
->mask
;
3624 * Determine which access bits we want to ask for...
3626 if (mode
& MAY_READ
)
3627 args
.access
|= NFS4_ACCESS_READ
;
3628 if (S_ISDIR(inode
->i_mode
)) {
3629 if (mode
& MAY_WRITE
)
3630 args
.access
|= NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
| NFS4_ACCESS_DELETE
;
3631 if (mode
& MAY_EXEC
)
3632 args
.access
|= NFS4_ACCESS_LOOKUP
;
3634 if (mode
& MAY_WRITE
)
3635 args
.access
|= NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
;
3636 if (mode
& MAY_EXEC
)
3637 args
.access
|= NFS4_ACCESS_EXECUTE
;
3640 res
.fattr
= nfs_alloc_fattr();
3641 if (res
.fattr
== NULL
)
3644 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3646 nfs_access_set_mask(entry
, res
.access
);
3647 nfs_refresh_inode(inode
, res
.fattr
);
3649 nfs_free_fattr(res
.fattr
);
3653 static int nfs4_proc_access(struct inode
*inode
, struct nfs_access_entry
*entry
)
3655 struct nfs4_exception exception
= { };
3658 err
= _nfs4_proc_access(inode
, entry
);
3659 trace_nfs4_access(inode
, err
);
3660 err
= nfs4_handle_exception(NFS_SERVER(inode
), err
,
3662 } while (exception
.retry
);
3667 * TODO: For the time being, we don't try to get any attributes
3668 * along with any of the zero-copy operations READ, READDIR,
3671 * In the case of the first three, we want to put the GETATTR
3672 * after the read-type operation -- this is because it is hard
3673 * to predict the length of a GETATTR response in v4, and thus
3674 * align the READ data correctly. This means that the GETATTR
3675 * may end up partially falling into the page cache, and we should
3676 * shift it into the 'tail' of the xdr_buf before processing.
3677 * To do this efficiently, we need to know the total length
3678 * of data received, which doesn't seem to be available outside
3681 * In the case of WRITE, we also want to put the GETATTR after
3682 * the operation -- in this case because we want to make sure
3683 * we get the post-operation mtime and size.
3685 * Both of these changes to the XDR layer would in fact be quite
3686 * minor, but I decided to leave them for a subsequent patch.
3688 static int _nfs4_proc_readlink(struct inode
*inode
, struct page
*page
,
3689 unsigned int pgbase
, unsigned int pglen
)
3691 struct nfs4_readlink args
= {
3692 .fh
= NFS_FH(inode
),
3697 struct nfs4_readlink_res res
;
3698 struct rpc_message msg
= {
3699 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READLINK
],
3704 return nfs4_call_sync(NFS_SERVER(inode
)->client
, NFS_SERVER(inode
), &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3707 static int nfs4_proc_readlink(struct inode
*inode
, struct page
*page
,
3708 unsigned int pgbase
, unsigned int pglen
)
3710 struct nfs4_exception exception
= { };
3713 err
= _nfs4_proc_readlink(inode
, page
, pgbase
, pglen
);
3714 trace_nfs4_readlink(inode
, err
);
3715 err
= nfs4_handle_exception(NFS_SERVER(inode
), err
,
3717 } while (exception
.retry
);
3722 * This is just for mknod. open(O_CREAT) will always do ->open_context().
3725 nfs4_proc_create(struct inode
*dir
, struct dentry
*dentry
, struct iattr
*sattr
,
3728 struct nfs4_label l
, *ilabel
= NULL
;
3729 struct nfs_open_context
*ctx
;
3730 struct nfs4_state
*state
;
3733 ctx
= alloc_nfs_open_context(dentry
, FMODE_READ
);
3735 return PTR_ERR(ctx
);
3737 ilabel
= nfs4_label_init_security(dir
, dentry
, sattr
, &l
);
3739 sattr
->ia_mode
&= ~current_umask();
3740 state
= nfs4_do_open(dir
, ctx
, flags
, sattr
, ilabel
, NULL
);
3741 if (IS_ERR(state
)) {
3742 status
= PTR_ERR(state
);
3746 nfs4_label_release_security(ilabel
);
3747 put_nfs_open_context(ctx
);
3751 static int _nfs4_proc_remove(struct inode
*dir
, struct qstr
*name
)
3753 struct nfs_server
*server
= NFS_SERVER(dir
);
3754 struct nfs_removeargs args
= {
3758 struct nfs_removeres res
= {
3761 struct rpc_message msg
= {
3762 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_REMOVE
],
3768 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 1);
3770 update_changeattr(dir
, &res
.cinfo
);
3774 static int nfs4_proc_remove(struct inode
*dir
, struct qstr
*name
)
3776 struct nfs4_exception exception
= { };
3779 err
= _nfs4_proc_remove(dir
, name
);
3780 trace_nfs4_remove(dir
, name
, err
);
3781 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
3783 } while (exception
.retry
);
3787 static void nfs4_proc_unlink_setup(struct rpc_message
*msg
, struct inode
*dir
)
3789 struct nfs_server
*server
= NFS_SERVER(dir
);
3790 struct nfs_removeargs
*args
= msg
->rpc_argp
;
3791 struct nfs_removeres
*res
= msg
->rpc_resp
;
3793 res
->server
= server
;
3794 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_REMOVE
];
3795 nfs4_init_sequence(&args
->seq_args
, &res
->seq_res
, 1);
3797 nfs_fattr_init(res
->dir_attr
);
3800 static void nfs4_proc_unlink_rpc_prepare(struct rpc_task
*task
, struct nfs_unlinkdata
*data
)
3802 nfs4_setup_sequence(NFS_SB(data
->dentry
->d_sb
),
3803 &data
->args
.seq_args
,
3808 static int nfs4_proc_unlink_done(struct rpc_task
*task
, struct inode
*dir
)
3810 struct nfs_unlinkdata
*data
= task
->tk_calldata
;
3811 struct nfs_removeres
*res
= &data
->res
;
3813 if (!nfs4_sequence_done(task
, &res
->seq_res
))
3815 if (nfs4_async_handle_error(task
, res
->server
, NULL
,
3816 &data
->timeout
) == -EAGAIN
)
3818 update_changeattr(dir
, &res
->cinfo
);
3822 static void nfs4_proc_rename_setup(struct rpc_message
*msg
, struct inode
*dir
)
3824 struct nfs_server
*server
= NFS_SERVER(dir
);
3825 struct nfs_renameargs
*arg
= msg
->rpc_argp
;
3826 struct nfs_renameres
*res
= msg
->rpc_resp
;
3828 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENAME
];
3829 res
->server
= server
;
3830 nfs4_init_sequence(&arg
->seq_args
, &res
->seq_res
, 1);
3833 static void nfs4_proc_rename_rpc_prepare(struct rpc_task
*task
, struct nfs_renamedata
*data
)
3835 nfs4_setup_sequence(NFS_SERVER(data
->old_dir
),
3836 &data
->args
.seq_args
,
3841 static int nfs4_proc_rename_done(struct rpc_task
*task
, struct inode
*old_dir
,
3842 struct inode
*new_dir
)
3844 struct nfs_renamedata
*data
= task
->tk_calldata
;
3845 struct nfs_renameres
*res
= &data
->res
;
3847 if (!nfs4_sequence_done(task
, &res
->seq_res
))
3849 if (nfs4_async_handle_error(task
, res
->server
, NULL
, &data
->timeout
) == -EAGAIN
)
3852 update_changeattr(old_dir
, &res
->old_cinfo
);
3853 update_changeattr(new_dir
, &res
->new_cinfo
);
3857 static int _nfs4_proc_link(struct inode
*inode
, struct inode
*dir
, struct qstr
*name
)
3859 struct nfs_server
*server
= NFS_SERVER(inode
);
3860 struct nfs4_link_arg arg
= {
3861 .fh
= NFS_FH(inode
),
3862 .dir_fh
= NFS_FH(dir
),
3864 .bitmask
= server
->attr_bitmask
,
3866 struct nfs4_link_res res
= {
3870 struct rpc_message msg
= {
3871 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LINK
],
3875 int status
= -ENOMEM
;
3877 res
.fattr
= nfs_alloc_fattr();
3878 if (res
.fattr
== NULL
)
3881 res
.label
= nfs4_label_alloc(server
, GFP_KERNEL
);
3882 if (IS_ERR(res
.label
)) {
3883 status
= PTR_ERR(res
.label
);
3886 arg
.bitmask
= nfs4_bitmask(server
, res
.label
);
3888 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
3890 update_changeattr(dir
, &res
.cinfo
);
3891 status
= nfs_post_op_update_inode(inode
, res
.fattr
);
3893 nfs_setsecurity(inode
, res
.fattr
, res
.label
);
3897 nfs4_label_free(res
.label
);
3900 nfs_free_fattr(res
.fattr
);
3904 static int nfs4_proc_link(struct inode
*inode
, struct inode
*dir
, struct qstr
*name
)
3906 struct nfs4_exception exception
= { };
3909 err
= nfs4_handle_exception(NFS_SERVER(inode
),
3910 _nfs4_proc_link(inode
, dir
, name
),
3912 } while (exception
.retry
);
3916 struct nfs4_createdata
{
3917 struct rpc_message msg
;
3918 struct nfs4_create_arg arg
;
3919 struct nfs4_create_res res
;
3921 struct nfs_fattr fattr
;
3922 struct nfs4_label
*label
;
3925 static struct nfs4_createdata
*nfs4_alloc_createdata(struct inode
*dir
,
3926 struct qstr
*name
, struct iattr
*sattr
, u32 ftype
)
3928 struct nfs4_createdata
*data
;
3930 data
= kzalloc(sizeof(*data
), GFP_KERNEL
);
3932 struct nfs_server
*server
= NFS_SERVER(dir
);
3934 data
->label
= nfs4_label_alloc(server
, GFP_KERNEL
);
3935 if (IS_ERR(data
->label
))
3938 data
->msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CREATE
];
3939 data
->msg
.rpc_argp
= &data
->arg
;
3940 data
->msg
.rpc_resp
= &data
->res
;
3941 data
->arg
.dir_fh
= NFS_FH(dir
);
3942 data
->arg
.server
= server
;
3943 data
->arg
.name
= name
;
3944 data
->arg
.attrs
= sattr
;
3945 data
->arg
.ftype
= ftype
;
3946 data
->arg
.bitmask
= nfs4_bitmask(server
, data
->label
);
3947 data
->res
.server
= server
;
3948 data
->res
.fh
= &data
->fh
;
3949 data
->res
.fattr
= &data
->fattr
;
3950 data
->res
.label
= data
->label
;
3951 nfs_fattr_init(data
->res
.fattr
);
3959 static int nfs4_do_create(struct inode
*dir
, struct dentry
*dentry
, struct nfs4_createdata
*data
)
3961 int status
= nfs4_call_sync(NFS_SERVER(dir
)->client
, NFS_SERVER(dir
), &data
->msg
,
3962 &data
->arg
.seq_args
, &data
->res
.seq_res
, 1);
3964 update_changeattr(dir
, &data
->res
.dir_cinfo
);
3965 status
= nfs_instantiate(dentry
, data
->res
.fh
, data
->res
.fattr
, data
->res
.label
);
3970 static void nfs4_free_createdata(struct nfs4_createdata
*data
)
3972 nfs4_label_free(data
->label
);
3976 static int _nfs4_proc_symlink(struct inode
*dir
, struct dentry
*dentry
,
3977 struct page
*page
, unsigned int len
, struct iattr
*sattr
,
3978 struct nfs4_label
*label
)
3980 struct nfs4_createdata
*data
;
3981 int status
= -ENAMETOOLONG
;
3983 if (len
> NFS4_MAXPATHLEN
)
3987 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4LNK
);
3991 data
->msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SYMLINK
];
3992 data
->arg
.u
.symlink
.pages
= &page
;
3993 data
->arg
.u
.symlink
.len
= len
;
3994 data
->arg
.label
= label
;
3996 status
= nfs4_do_create(dir
, dentry
, data
);
3998 nfs4_free_createdata(data
);
4003 static int nfs4_proc_symlink(struct inode
*dir
, struct dentry
*dentry
,
4004 struct page
*page
, unsigned int len
, struct iattr
*sattr
)
4006 struct nfs4_exception exception
= { };
4007 struct nfs4_label l
, *label
= NULL
;
4010 label
= nfs4_label_init_security(dir
, dentry
, sattr
, &l
);
4013 err
= _nfs4_proc_symlink(dir
, dentry
, page
, len
, sattr
, label
);
4014 trace_nfs4_symlink(dir
, &dentry
->d_name
, err
);
4015 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
4017 } while (exception
.retry
);
4019 nfs4_label_release_security(label
);
4023 static int _nfs4_proc_mkdir(struct inode
*dir
, struct dentry
*dentry
,
4024 struct iattr
*sattr
, struct nfs4_label
*label
)
4026 struct nfs4_createdata
*data
;
4027 int status
= -ENOMEM
;
4029 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4DIR
);
4033 data
->arg
.label
= label
;
4034 status
= nfs4_do_create(dir
, dentry
, data
);
4036 nfs4_free_createdata(data
);
4041 static int nfs4_proc_mkdir(struct inode
*dir
, struct dentry
*dentry
,
4042 struct iattr
*sattr
)
4044 struct nfs4_exception exception
= { };
4045 struct nfs4_label l
, *label
= NULL
;
4048 label
= nfs4_label_init_security(dir
, dentry
, sattr
, &l
);
4050 sattr
->ia_mode
&= ~current_umask();
4052 err
= _nfs4_proc_mkdir(dir
, dentry
, sattr
, label
);
4053 trace_nfs4_mkdir(dir
, &dentry
->d_name
, err
);
4054 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
4056 } while (exception
.retry
);
4057 nfs4_label_release_security(label
);
4062 static int _nfs4_proc_readdir(struct dentry
*dentry
, struct rpc_cred
*cred
,
4063 u64 cookie
, struct page
**pages
, unsigned int count
, int plus
)
4065 struct inode
*dir
= d_inode(dentry
);
4066 struct nfs4_readdir_arg args
= {
4071 .bitmask
= NFS_SERVER(d_inode(dentry
))->attr_bitmask
,
4074 struct nfs4_readdir_res res
;
4075 struct rpc_message msg
= {
4076 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READDIR
],
4083 dprintk("%s: dentry = %pd2, cookie = %Lu\n", __func__
,
4085 (unsigned long long)cookie
);
4086 nfs4_setup_readdir(cookie
, NFS_I(dir
)->cookieverf
, dentry
, &args
);
4087 res
.pgbase
= args
.pgbase
;
4088 status
= nfs4_call_sync(NFS_SERVER(dir
)->client
, NFS_SERVER(dir
), &msg
, &args
.seq_args
, &res
.seq_res
, 0);
4090 memcpy(NFS_I(dir
)->cookieverf
, res
.verifier
.data
, NFS4_VERIFIER_SIZE
);
4091 status
+= args
.pgbase
;
4094 nfs_invalidate_atime(dir
);
4096 dprintk("%s: returns %d\n", __func__
, status
);
4100 static int nfs4_proc_readdir(struct dentry
*dentry
, struct rpc_cred
*cred
,
4101 u64 cookie
, struct page
**pages
, unsigned int count
, int plus
)
4103 struct nfs4_exception exception
= { };
4106 err
= _nfs4_proc_readdir(dentry
, cred
, cookie
,
4107 pages
, count
, plus
);
4108 trace_nfs4_readdir(d_inode(dentry
), err
);
4109 err
= nfs4_handle_exception(NFS_SERVER(d_inode(dentry
)), err
,
4111 } while (exception
.retry
);
4115 static int _nfs4_proc_mknod(struct inode
*dir
, struct dentry
*dentry
,
4116 struct iattr
*sattr
, struct nfs4_label
*label
, dev_t rdev
)
4118 struct nfs4_createdata
*data
;
4119 int mode
= sattr
->ia_mode
;
4120 int status
= -ENOMEM
;
4122 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4SOCK
);
4127 data
->arg
.ftype
= NF4FIFO
;
4128 else if (S_ISBLK(mode
)) {
4129 data
->arg
.ftype
= NF4BLK
;
4130 data
->arg
.u
.device
.specdata1
= MAJOR(rdev
);
4131 data
->arg
.u
.device
.specdata2
= MINOR(rdev
);
4133 else if (S_ISCHR(mode
)) {
4134 data
->arg
.ftype
= NF4CHR
;
4135 data
->arg
.u
.device
.specdata1
= MAJOR(rdev
);
4136 data
->arg
.u
.device
.specdata2
= MINOR(rdev
);
4137 } else if (!S_ISSOCK(mode
)) {
4142 data
->arg
.label
= label
;
4143 status
= nfs4_do_create(dir
, dentry
, data
);
4145 nfs4_free_createdata(data
);
4150 static int nfs4_proc_mknod(struct inode
*dir
, struct dentry
*dentry
,
4151 struct iattr
*sattr
, dev_t rdev
)
4153 struct nfs4_exception exception
= { };
4154 struct nfs4_label l
, *label
= NULL
;
4157 label
= nfs4_label_init_security(dir
, dentry
, sattr
, &l
);
4159 sattr
->ia_mode
&= ~current_umask();
4161 err
= _nfs4_proc_mknod(dir
, dentry
, sattr
, label
, rdev
);
4162 trace_nfs4_mknod(dir
, &dentry
->d_name
, err
);
4163 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
4165 } while (exception
.retry
);
4167 nfs4_label_release_security(label
);
4172 static int _nfs4_proc_statfs(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
4173 struct nfs_fsstat
*fsstat
)
4175 struct nfs4_statfs_arg args
= {
4177 .bitmask
= server
->attr_bitmask
,
4179 struct nfs4_statfs_res res
= {
4182 struct rpc_message msg
= {
4183 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_STATFS
],
4188 nfs_fattr_init(fsstat
->fattr
);
4189 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
4192 static int nfs4_proc_statfs(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsstat
*fsstat
)
4194 struct nfs4_exception exception
= { };
4197 err
= nfs4_handle_exception(server
,
4198 _nfs4_proc_statfs(server
, fhandle
, fsstat
),
4200 } while (exception
.retry
);
4204 static int _nfs4_do_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
4205 struct nfs_fsinfo
*fsinfo
)
4207 struct nfs4_fsinfo_arg args
= {
4209 .bitmask
= server
->attr_bitmask
,
4211 struct nfs4_fsinfo_res res
= {
4214 struct rpc_message msg
= {
4215 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FSINFO
],
4220 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
4223 static int nfs4_do_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsinfo
*fsinfo
)
4225 struct nfs4_exception exception
= { };
4226 unsigned long now
= jiffies
;
4230 err
= _nfs4_do_fsinfo(server
, fhandle
, fsinfo
);
4231 trace_nfs4_fsinfo(server
, fhandle
, fsinfo
->fattr
, err
);
4233 struct nfs_client
*clp
= server
->nfs_client
;
4235 spin_lock(&clp
->cl_lock
);
4236 clp
->cl_lease_time
= fsinfo
->lease_time
* HZ
;
4237 clp
->cl_last_renewal
= now
;
4238 spin_unlock(&clp
->cl_lock
);
4241 err
= nfs4_handle_exception(server
, err
, &exception
);
4242 } while (exception
.retry
);
4246 static int nfs4_proc_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsinfo
*fsinfo
)
4250 nfs_fattr_init(fsinfo
->fattr
);
4251 error
= nfs4_do_fsinfo(server
, fhandle
, fsinfo
);
4253 /* block layout checks this! */
4254 server
->pnfs_blksize
= fsinfo
->blksize
;
4255 set_pnfs_layoutdriver(server
, fhandle
, fsinfo
->layouttype
);
4261 static int _nfs4_proc_pathconf(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
4262 struct nfs_pathconf
*pathconf
)
4264 struct nfs4_pathconf_arg args
= {
4266 .bitmask
= server
->attr_bitmask
,
4268 struct nfs4_pathconf_res res
= {
4269 .pathconf
= pathconf
,
4271 struct rpc_message msg
= {
4272 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_PATHCONF
],
4277 /* None of the pathconf attributes are mandatory to implement */
4278 if ((args
.bitmask
[0] & nfs4_pathconf_bitmap
[0]) == 0) {
4279 memset(pathconf
, 0, sizeof(*pathconf
));
4283 nfs_fattr_init(pathconf
->fattr
);
4284 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
4287 static int nfs4_proc_pathconf(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
4288 struct nfs_pathconf
*pathconf
)
4290 struct nfs4_exception exception
= { };
4294 err
= nfs4_handle_exception(server
,
4295 _nfs4_proc_pathconf(server
, fhandle
, pathconf
),
4297 } while (exception
.retry
);
4301 int nfs4_set_rw_stateid(nfs4_stateid
*stateid
,
4302 const struct nfs_open_context
*ctx
,
4303 const struct nfs_lock_context
*l_ctx
,
4306 const struct nfs_lockowner
*lockowner
= NULL
;
4309 lockowner
= &l_ctx
->lockowner
;
4310 return nfs4_select_rw_stateid(ctx
->state
, fmode
, lockowner
, stateid
, NULL
);
4312 EXPORT_SYMBOL_GPL(nfs4_set_rw_stateid
);
4314 static bool nfs4_stateid_is_current(nfs4_stateid
*stateid
,
4315 const struct nfs_open_context
*ctx
,
4316 const struct nfs_lock_context
*l_ctx
,
4319 nfs4_stateid current_stateid
;
4321 /* If the current stateid represents a lost lock, then exit */
4322 if (nfs4_set_rw_stateid(¤t_stateid
, ctx
, l_ctx
, fmode
) == -EIO
)
4324 return nfs4_stateid_match(stateid
, ¤t_stateid
);
4327 static bool nfs4_error_stateid_expired(int err
)
4330 case -NFS4ERR_DELEG_REVOKED
:
4331 case -NFS4ERR_ADMIN_REVOKED
:
4332 case -NFS4ERR_BAD_STATEID
:
4333 case -NFS4ERR_STALE_STATEID
:
4334 case -NFS4ERR_OLD_STATEID
:
4335 case -NFS4ERR_OPENMODE
:
4336 case -NFS4ERR_EXPIRED
:
4342 void __nfs4_read_done_cb(struct nfs_pgio_header
*hdr
)
4344 nfs_invalidate_atime(hdr
->inode
);
4347 static int nfs4_read_done_cb(struct rpc_task
*task
, struct nfs_pgio_header
*hdr
)
4349 struct nfs_server
*server
= NFS_SERVER(hdr
->inode
);
4351 trace_nfs4_read(hdr
, task
->tk_status
);
4352 if (nfs4_async_handle_error(task
, server
,
4353 hdr
->args
.context
->state
,
4355 rpc_restart_call_prepare(task
);
4359 __nfs4_read_done_cb(hdr
);
4360 if (task
->tk_status
> 0)
4361 renew_lease(server
, hdr
->timestamp
);
4365 static bool nfs4_read_stateid_changed(struct rpc_task
*task
,
4366 struct nfs_pgio_args
*args
)
4369 if (!nfs4_error_stateid_expired(task
->tk_status
) ||
4370 nfs4_stateid_is_current(&args
->stateid
,
4375 rpc_restart_call_prepare(task
);
4379 static int nfs4_read_done(struct rpc_task
*task
, struct nfs_pgio_header
*hdr
)
4382 dprintk("--> %s\n", __func__
);
4384 if (!nfs4_sequence_done(task
, &hdr
->res
.seq_res
))
4386 if (nfs4_read_stateid_changed(task
, &hdr
->args
))
4388 return hdr
->pgio_done_cb
? hdr
->pgio_done_cb(task
, hdr
) :
4389 nfs4_read_done_cb(task
, hdr
);
4392 static void nfs4_proc_read_setup(struct nfs_pgio_header
*hdr
,
4393 struct rpc_message
*msg
)
4395 hdr
->timestamp
= jiffies
;
4396 hdr
->pgio_done_cb
= nfs4_read_done_cb
;
4397 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READ
];
4398 nfs4_init_sequence(&hdr
->args
.seq_args
, &hdr
->res
.seq_res
, 0);
4401 static int nfs4_proc_pgio_rpc_prepare(struct rpc_task
*task
,
4402 struct nfs_pgio_header
*hdr
)
4404 if (nfs4_setup_sequence(NFS_SERVER(hdr
->inode
),
4405 &hdr
->args
.seq_args
,
4409 if (nfs4_set_rw_stateid(&hdr
->args
.stateid
, hdr
->args
.context
,
4410 hdr
->args
.lock_context
,
4411 hdr
->rw_ops
->rw_mode
) == -EIO
)
4413 if (unlikely(test_bit(NFS_CONTEXT_BAD
, &hdr
->args
.context
->flags
)))
4418 static int nfs4_write_done_cb(struct rpc_task
*task
,
4419 struct nfs_pgio_header
*hdr
)
4421 struct inode
*inode
= hdr
->inode
;
4423 trace_nfs4_write(hdr
, task
->tk_status
);
4424 if (nfs4_async_handle_error(task
, NFS_SERVER(inode
),
4425 hdr
->args
.context
->state
,
4427 rpc_restart_call_prepare(task
);
4430 if (task
->tk_status
>= 0) {
4431 renew_lease(NFS_SERVER(inode
), hdr
->timestamp
);
4432 nfs_writeback_update_inode(hdr
);
4437 static bool nfs4_write_stateid_changed(struct rpc_task
*task
,
4438 struct nfs_pgio_args
*args
)
4441 if (!nfs4_error_stateid_expired(task
->tk_status
) ||
4442 nfs4_stateid_is_current(&args
->stateid
,
4447 rpc_restart_call_prepare(task
);
4451 static int nfs4_write_done(struct rpc_task
*task
, struct nfs_pgio_header
*hdr
)
4453 if (!nfs4_sequence_done(task
, &hdr
->res
.seq_res
))
4455 if (nfs4_write_stateid_changed(task
, &hdr
->args
))
4457 return hdr
->pgio_done_cb
? hdr
->pgio_done_cb(task
, hdr
) :
4458 nfs4_write_done_cb(task
, hdr
);
4462 bool nfs4_write_need_cache_consistency_data(struct nfs_pgio_header
*hdr
)
4464 /* Don't request attributes for pNFS or O_DIRECT writes */
4465 if (hdr
->ds_clp
!= NULL
|| hdr
->dreq
!= NULL
)
4467 /* Otherwise, request attributes if and only if we don't hold
4470 return nfs4_have_delegation(hdr
->inode
, FMODE_READ
) == 0;
4473 static void nfs4_proc_write_setup(struct nfs_pgio_header
*hdr
,
4474 struct rpc_message
*msg
)
4476 struct nfs_server
*server
= NFS_SERVER(hdr
->inode
);
4478 if (!nfs4_write_need_cache_consistency_data(hdr
)) {
4479 hdr
->args
.bitmask
= NULL
;
4480 hdr
->res
.fattr
= NULL
;
4482 hdr
->args
.bitmask
= server
->cache_consistency_bitmask
;
4484 if (!hdr
->pgio_done_cb
)
4485 hdr
->pgio_done_cb
= nfs4_write_done_cb
;
4486 hdr
->res
.server
= server
;
4487 hdr
->timestamp
= jiffies
;
4489 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_WRITE
];
4490 nfs4_init_sequence(&hdr
->args
.seq_args
, &hdr
->res
.seq_res
, 1);
4493 static void nfs4_proc_commit_rpc_prepare(struct rpc_task
*task
, struct nfs_commit_data
*data
)
4495 nfs4_setup_sequence(NFS_SERVER(data
->inode
),
4496 &data
->args
.seq_args
,
4501 static int nfs4_commit_done_cb(struct rpc_task
*task
, struct nfs_commit_data
*data
)
4503 struct inode
*inode
= data
->inode
;
4505 trace_nfs4_commit(data
, task
->tk_status
);
4506 if (nfs4_async_handle_error(task
, NFS_SERVER(inode
),
4507 NULL
, NULL
) == -EAGAIN
) {
4508 rpc_restart_call_prepare(task
);
4514 static int nfs4_commit_done(struct rpc_task
*task
, struct nfs_commit_data
*data
)
4516 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
4518 return data
->commit_done_cb(task
, data
);
4521 static void nfs4_proc_commit_setup(struct nfs_commit_data
*data
, struct rpc_message
*msg
)
4523 struct nfs_server
*server
= NFS_SERVER(data
->inode
);
4525 if (data
->commit_done_cb
== NULL
)
4526 data
->commit_done_cb
= nfs4_commit_done_cb
;
4527 data
->res
.server
= server
;
4528 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_COMMIT
];
4529 nfs4_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
4532 struct nfs4_renewdata
{
4533 struct nfs_client
*client
;
4534 unsigned long timestamp
;
4538 * nfs4_proc_async_renew(): This is not one of the nfs_rpc_ops; it is a special
4539 * standalone procedure for queueing an asynchronous RENEW.
4541 static void nfs4_renew_release(void *calldata
)
4543 struct nfs4_renewdata
*data
= calldata
;
4544 struct nfs_client
*clp
= data
->client
;
4546 if (atomic_read(&clp
->cl_count
) > 1)
4547 nfs4_schedule_state_renewal(clp
);
4548 nfs_put_client(clp
);
4552 static void nfs4_renew_done(struct rpc_task
*task
, void *calldata
)
4554 struct nfs4_renewdata
*data
= calldata
;
4555 struct nfs_client
*clp
= data
->client
;
4556 unsigned long timestamp
= data
->timestamp
;
4558 trace_nfs4_renew_async(clp
, task
->tk_status
);
4559 switch (task
->tk_status
) {
4562 case -NFS4ERR_LEASE_MOVED
:
4563 nfs4_schedule_lease_moved_recovery(clp
);
4566 /* Unless we're shutting down, schedule state recovery! */
4567 if (test_bit(NFS_CS_RENEWD
, &clp
->cl_res_state
) == 0)
4569 if (task
->tk_status
!= NFS4ERR_CB_PATH_DOWN
) {
4570 nfs4_schedule_lease_recovery(clp
);
4573 nfs4_schedule_path_down_recovery(clp
);
4575 do_renew_lease(clp
, timestamp
);
4578 static const struct rpc_call_ops nfs4_renew_ops
= {
4579 .rpc_call_done
= nfs4_renew_done
,
4580 .rpc_release
= nfs4_renew_release
,
4583 static int nfs4_proc_async_renew(struct nfs_client
*clp
, struct rpc_cred
*cred
, unsigned renew_flags
)
4585 struct rpc_message msg
= {
4586 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENEW
],
4590 struct nfs4_renewdata
*data
;
4592 if (renew_flags
== 0)
4594 if (!atomic_inc_not_zero(&clp
->cl_count
))
4596 data
= kmalloc(sizeof(*data
), GFP_NOFS
);
4600 data
->timestamp
= jiffies
;
4601 return rpc_call_async(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
,
4602 &nfs4_renew_ops
, data
);
4605 static int nfs4_proc_renew(struct nfs_client
*clp
, struct rpc_cred
*cred
)
4607 struct rpc_message msg
= {
4608 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENEW
],
4612 unsigned long now
= jiffies
;
4615 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
4618 do_renew_lease(clp
, now
);
4622 static inline int nfs4_server_supports_acls(struct nfs_server
*server
)
4624 return server
->caps
& NFS_CAP_ACLS
;
4627 /* Assuming that XATTR_SIZE_MAX is a multiple of PAGE_SIZE, and that
4628 * it's OK to put sizeof(void) * (XATTR_SIZE_MAX/PAGE_SIZE) bytes on
4631 #define NFS4ACL_MAXPAGES DIV_ROUND_UP(XATTR_SIZE_MAX, PAGE_SIZE)
4633 static int buf_to_pages_noslab(const void *buf
, size_t buflen
,
4634 struct page
**pages
)
4636 struct page
*newpage
, **spages
;
4642 len
= min_t(size_t, PAGE_SIZE
, buflen
);
4643 newpage
= alloc_page(GFP_KERNEL
);
4645 if (newpage
== NULL
)
4647 memcpy(page_address(newpage
), buf
, len
);
4652 } while (buflen
!= 0);
4658 __free_page(spages
[rc
-1]);
4662 struct nfs4_cached_acl
{
4668 static void nfs4_set_cached_acl(struct inode
*inode
, struct nfs4_cached_acl
*acl
)
4670 struct nfs_inode
*nfsi
= NFS_I(inode
);
4672 spin_lock(&inode
->i_lock
);
4673 kfree(nfsi
->nfs4_acl
);
4674 nfsi
->nfs4_acl
= acl
;
4675 spin_unlock(&inode
->i_lock
);
4678 static void nfs4_zap_acl_attr(struct inode
*inode
)
4680 nfs4_set_cached_acl(inode
, NULL
);
4683 static inline ssize_t
nfs4_read_cached_acl(struct inode
*inode
, char *buf
, size_t buflen
)
4685 struct nfs_inode
*nfsi
= NFS_I(inode
);
4686 struct nfs4_cached_acl
*acl
;
4689 spin_lock(&inode
->i_lock
);
4690 acl
= nfsi
->nfs4_acl
;
4693 if (buf
== NULL
) /* user is just asking for length */
4695 if (acl
->cached
== 0)
4697 ret
= -ERANGE
; /* see getxattr(2) man page */
4698 if (acl
->len
> buflen
)
4700 memcpy(buf
, acl
->data
, acl
->len
);
4704 spin_unlock(&inode
->i_lock
);
4708 static void nfs4_write_cached_acl(struct inode
*inode
, struct page
**pages
, size_t pgbase
, size_t acl_len
)
4710 struct nfs4_cached_acl
*acl
;
4711 size_t buflen
= sizeof(*acl
) + acl_len
;
4713 if (buflen
<= PAGE_SIZE
) {
4714 acl
= kmalloc(buflen
, GFP_KERNEL
);
4718 _copy_from_pages(acl
->data
, pages
, pgbase
, acl_len
);
4720 acl
= kmalloc(sizeof(*acl
), GFP_KERNEL
);
4727 nfs4_set_cached_acl(inode
, acl
);
4731 * The getxattr API returns the required buffer length when called with a
4732 * NULL buf. The NFSv4 acl tool then calls getxattr again after allocating
4733 * the required buf. On a NULL buf, we send a page of data to the server
4734 * guessing that the ACL request can be serviced by a page. If so, we cache
4735 * up to the page of ACL data, and the 2nd call to getxattr is serviced by
4736 * the cache. If not so, we throw away the page, and cache the required
4737 * length. The next getxattr call will then produce another round trip to
4738 * the server, this time with the input buf of the required size.
4740 static ssize_t
__nfs4_get_acl_uncached(struct inode
*inode
, void *buf
, size_t buflen
)
4742 struct page
*pages
[NFS4ACL_MAXPAGES
] = {NULL
, };
4743 struct nfs_getaclargs args
= {
4744 .fh
= NFS_FH(inode
),
4748 struct nfs_getaclres res
= {
4751 struct rpc_message msg
= {
4752 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETACL
],
4756 unsigned int npages
= DIV_ROUND_UP(buflen
, PAGE_SIZE
);
4757 int ret
= -ENOMEM
, i
;
4759 /* As long as we're doing a round trip to the server anyway,
4760 * let's be prepared for a page of acl data. */
4763 if (npages
> ARRAY_SIZE(pages
))
4766 for (i
= 0; i
< npages
; i
++) {
4767 pages
[i
] = alloc_page(GFP_KERNEL
);
4772 /* for decoding across pages */
4773 res
.acl_scratch
= alloc_page(GFP_KERNEL
);
4774 if (!res
.acl_scratch
)
4777 args
.acl_len
= npages
* PAGE_SIZE
;
4779 dprintk("%s buf %p buflen %zu npages %d args.acl_len %zu\n",
4780 __func__
, buf
, buflen
, npages
, args
.acl_len
);
4781 ret
= nfs4_call_sync(NFS_SERVER(inode
)->client
, NFS_SERVER(inode
),
4782 &msg
, &args
.seq_args
, &res
.seq_res
, 0);
4786 /* Handle the case where the passed-in buffer is too short */
4787 if (res
.acl_flags
& NFS4_ACL_TRUNC
) {
4788 /* Did the user only issue a request for the acl length? */
4794 nfs4_write_cached_acl(inode
, pages
, res
.acl_data_offset
, res
.acl_len
);
4796 if (res
.acl_len
> buflen
) {
4800 _copy_from_pages(buf
, pages
, res
.acl_data_offset
, res
.acl_len
);
4805 for (i
= 0; i
< npages
; i
++)
4807 __free_page(pages
[i
]);
4808 if (res
.acl_scratch
)
4809 __free_page(res
.acl_scratch
);
4813 static ssize_t
nfs4_get_acl_uncached(struct inode
*inode
, void *buf
, size_t buflen
)
4815 struct nfs4_exception exception
= { };
4818 ret
= __nfs4_get_acl_uncached(inode
, buf
, buflen
);
4819 trace_nfs4_get_acl(inode
, ret
);
4822 ret
= nfs4_handle_exception(NFS_SERVER(inode
), ret
, &exception
);
4823 } while (exception
.retry
);
4827 static ssize_t
nfs4_proc_get_acl(struct inode
*inode
, void *buf
, size_t buflen
)
4829 struct nfs_server
*server
= NFS_SERVER(inode
);
4832 if (!nfs4_server_supports_acls(server
))
4834 ret
= nfs_revalidate_inode(server
, inode
);
4837 if (NFS_I(inode
)->cache_validity
& NFS_INO_INVALID_ACL
)
4838 nfs_zap_acl_cache(inode
);
4839 ret
= nfs4_read_cached_acl(inode
, buf
, buflen
);
4841 /* -ENOENT is returned if there is no ACL or if there is an ACL
4842 * but no cached acl data, just the acl length */
4844 return nfs4_get_acl_uncached(inode
, buf
, buflen
);
4847 static int __nfs4_proc_set_acl(struct inode
*inode
, const void *buf
, size_t buflen
)
4849 struct nfs_server
*server
= NFS_SERVER(inode
);
4850 struct page
*pages
[NFS4ACL_MAXPAGES
];
4851 struct nfs_setaclargs arg
= {
4852 .fh
= NFS_FH(inode
),
4856 struct nfs_setaclres res
;
4857 struct rpc_message msg
= {
4858 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETACL
],
4862 unsigned int npages
= DIV_ROUND_UP(buflen
, PAGE_SIZE
);
4865 if (!nfs4_server_supports_acls(server
))
4867 if (npages
> ARRAY_SIZE(pages
))
4869 i
= buf_to_pages_noslab(buf
, buflen
, arg
.acl_pages
);
4872 nfs4_inode_return_delegation(inode
);
4873 ret
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
4876 * Free each page after tx, so the only ref left is
4877 * held by the network stack
4880 put_page(pages
[i
-1]);
4883 * Acl update can result in inode attribute update.
4884 * so mark the attribute cache invalid.
4886 spin_lock(&inode
->i_lock
);
4887 NFS_I(inode
)->cache_validity
|= NFS_INO_INVALID_ATTR
;
4888 spin_unlock(&inode
->i_lock
);
4889 nfs_access_zap_cache(inode
);
4890 nfs_zap_acl_cache(inode
);
4894 static int nfs4_proc_set_acl(struct inode
*inode
, const void *buf
, size_t buflen
)
4896 struct nfs4_exception exception
= { };
4899 err
= __nfs4_proc_set_acl(inode
, buf
, buflen
);
4900 trace_nfs4_set_acl(inode
, err
);
4901 err
= nfs4_handle_exception(NFS_SERVER(inode
), err
,
4903 } while (exception
.retry
);
4907 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
4908 static int _nfs4_get_security_label(struct inode
*inode
, void *buf
,
4911 struct nfs_server
*server
= NFS_SERVER(inode
);
4912 struct nfs_fattr fattr
;
4913 struct nfs4_label label
= {0, 0, buflen
, buf
};
4915 u32 bitmask
[3] = { 0, 0, FATTR4_WORD2_SECURITY_LABEL
};
4916 struct nfs4_getattr_arg arg
= {
4917 .fh
= NFS_FH(inode
),
4920 struct nfs4_getattr_res res
= {
4925 struct rpc_message msg
= {
4926 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETATTR
],
4932 nfs_fattr_init(&fattr
);
4934 ret
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 0);
4937 if (!(fattr
.valid
& NFS_ATTR_FATTR_V4_SECURITY_LABEL
))
4939 if (buflen
< label
.len
)
4944 static int nfs4_get_security_label(struct inode
*inode
, void *buf
,
4947 struct nfs4_exception exception
= { };
4950 if (!nfs_server_capable(inode
, NFS_CAP_SECURITY_LABEL
))
4954 err
= _nfs4_get_security_label(inode
, buf
, buflen
);
4955 trace_nfs4_get_security_label(inode
, err
);
4956 err
= nfs4_handle_exception(NFS_SERVER(inode
), err
,
4958 } while (exception
.retry
);
4962 static int _nfs4_do_set_security_label(struct inode
*inode
,
4963 struct nfs4_label
*ilabel
,
4964 struct nfs_fattr
*fattr
,
4965 struct nfs4_label
*olabel
)
4968 struct iattr sattr
= {0};
4969 struct nfs_server
*server
= NFS_SERVER(inode
);
4970 const u32 bitmask
[3] = { 0, 0, FATTR4_WORD2_SECURITY_LABEL
};
4971 struct nfs_setattrargs arg
= {
4972 .fh
= NFS_FH(inode
),
4978 struct nfs_setattrres res
= {
4983 struct rpc_message msg
= {
4984 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETATTR
],
4990 nfs4_stateid_copy(&arg
.stateid
, &zero_stateid
);
4992 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
4994 dprintk("%s failed: %d\n", __func__
, status
);
4999 static int nfs4_do_set_security_label(struct inode
*inode
,
5000 struct nfs4_label
*ilabel
,
5001 struct nfs_fattr
*fattr
,
5002 struct nfs4_label
*olabel
)
5004 struct nfs4_exception exception
= { };
5008 err
= _nfs4_do_set_security_label(inode
, ilabel
,
5010 trace_nfs4_set_security_label(inode
, err
);
5011 err
= nfs4_handle_exception(NFS_SERVER(inode
), err
,
5013 } while (exception
.retry
);
5018 nfs4_set_security_label(struct dentry
*dentry
, const void *buf
, size_t buflen
)
5020 struct nfs4_label ilabel
, *olabel
= NULL
;
5021 struct nfs_fattr fattr
;
5022 struct rpc_cred
*cred
;
5023 struct inode
*inode
= d_inode(dentry
);
5026 if (!nfs_server_capable(inode
, NFS_CAP_SECURITY_LABEL
))
5029 nfs_fattr_init(&fattr
);
5033 ilabel
.label
= (char *)buf
;
5034 ilabel
.len
= buflen
;
5036 cred
= rpc_lookup_cred();
5038 return PTR_ERR(cred
);
5040 olabel
= nfs4_label_alloc(NFS_SERVER(inode
), GFP_KERNEL
);
5041 if (IS_ERR(olabel
)) {
5042 status
= -PTR_ERR(olabel
);
5046 status
= nfs4_do_set_security_label(inode
, &ilabel
, &fattr
, olabel
);
5048 nfs_setsecurity(inode
, &fattr
, olabel
);
5050 nfs4_label_free(olabel
);
5055 #endif /* CONFIG_NFS_V4_SECURITY_LABEL */
5058 static void nfs4_init_boot_verifier(const struct nfs_client
*clp
,
5059 nfs4_verifier
*bootverf
)
5063 if (test_bit(NFS4CLNT_PURGE_STATE
, &clp
->cl_state
)) {
5064 /* An impossible timestamp guarantees this value
5065 * will never match a generated boot time. */
5067 verf
[1] = cpu_to_be32(NSEC_PER_SEC
+ 1);
5069 struct nfs_net
*nn
= net_generic(clp
->cl_net
, nfs_net_id
);
5070 verf
[0] = cpu_to_be32(nn
->boot_time
.tv_sec
);
5071 verf
[1] = cpu_to_be32(nn
->boot_time
.tv_nsec
);
5073 memcpy(bootverf
->data
, verf
, sizeof(bootverf
->data
));
5077 nfs4_init_nonuniform_client_string(struct nfs_client
*clp
)
5082 if (clp
->cl_owner_id
!= NULL
)
5086 len
= 14 + strlen(clp
->cl_ipaddr
) + 1 +
5087 strlen(rpc_peeraddr2str(clp
->cl_rpcclient
, RPC_DISPLAY_ADDR
)) +
5089 strlen(rpc_peeraddr2str(clp
->cl_rpcclient
, RPC_DISPLAY_PROTO
)) +
5093 if (len
> NFS4_OPAQUE_LIMIT
+ 1)
5097 * Since this string is allocated at mount time, and held until the
5098 * nfs_client is destroyed, we can use GFP_KERNEL here w/o worrying
5099 * about a memory-reclaim deadlock.
5101 str
= kmalloc(len
, GFP_KERNEL
);
5106 scnprintf(str
, len
, "Linux NFSv4.0 %s/%s %s",
5108 rpc_peeraddr2str(clp
->cl_rpcclient
, RPC_DISPLAY_ADDR
),
5109 rpc_peeraddr2str(clp
->cl_rpcclient
, RPC_DISPLAY_PROTO
));
5112 clp
->cl_owner_id
= str
;
5117 nfs4_init_uniquifier_client_string(struct nfs_client
*clp
)
5122 len
= 10 + 10 + 1 + 10 + 1 +
5123 strlen(nfs4_client_id_uniquifier
) + 1 +
5124 strlen(clp
->cl_rpcclient
->cl_nodename
) + 1;
5126 if (len
> NFS4_OPAQUE_LIMIT
+ 1)
5130 * Since this string is allocated at mount time, and held until the
5131 * nfs_client is destroyed, we can use GFP_KERNEL here w/o worrying
5132 * about a memory-reclaim deadlock.
5134 str
= kmalloc(len
, GFP_KERNEL
);
5138 scnprintf(str
, len
, "Linux NFSv%u.%u %s/%s",
5139 clp
->rpc_ops
->version
, clp
->cl_minorversion
,
5140 nfs4_client_id_uniquifier
,
5141 clp
->cl_rpcclient
->cl_nodename
);
5142 clp
->cl_owner_id
= str
;
5147 nfs4_init_uniform_client_string(struct nfs_client
*clp
)
5152 if (clp
->cl_owner_id
!= NULL
)
5155 if (nfs4_client_id_uniquifier
[0] != '\0')
5156 return nfs4_init_uniquifier_client_string(clp
);
5158 len
= 10 + 10 + 1 + 10 + 1 +
5159 strlen(clp
->cl_rpcclient
->cl_nodename
) + 1;
5161 if (len
> NFS4_OPAQUE_LIMIT
+ 1)
5165 * Since this string is allocated at mount time, and held until the
5166 * nfs_client is destroyed, we can use GFP_KERNEL here w/o worrying
5167 * about a memory-reclaim deadlock.
5169 str
= kmalloc(len
, GFP_KERNEL
);
5173 scnprintf(str
, len
, "Linux NFSv%u.%u %s",
5174 clp
->rpc_ops
->version
, clp
->cl_minorversion
,
5175 clp
->cl_rpcclient
->cl_nodename
);
5176 clp
->cl_owner_id
= str
;
5181 * nfs4_callback_up_net() starts only "tcp" and "tcp6" callback
5182 * services. Advertise one based on the address family of the
5186 nfs4_init_callback_netid(const struct nfs_client
*clp
, char *buf
, size_t len
)
5188 if (strchr(clp
->cl_ipaddr
, ':') != NULL
)
5189 return scnprintf(buf
, len
, "tcp6");
5191 return scnprintf(buf
, len
, "tcp");
5194 static void nfs4_setclientid_done(struct rpc_task
*task
, void *calldata
)
5196 struct nfs4_setclientid
*sc
= calldata
;
5198 if (task
->tk_status
== 0)
5199 sc
->sc_cred
= get_rpccred(task
->tk_rqstp
->rq_cred
);
5202 static const struct rpc_call_ops nfs4_setclientid_ops
= {
5203 .rpc_call_done
= nfs4_setclientid_done
,
5207 * nfs4_proc_setclientid - Negotiate client ID
5208 * @clp: state data structure
5209 * @program: RPC program for NFSv4 callback service
5210 * @port: IP port number for NFS4 callback service
5211 * @cred: RPC credential to use for this call
5212 * @res: where to place the result
5214 * Returns zero, a negative errno, or a negative NFS4ERR status code.
5216 int nfs4_proc_setclientid(struct nfs_client
*clp
, u32 program
,
5217 unsigned short port
, struct rpc_cred
*cred
,
5218 struct nfs4_setclientid_res
*res
)
5220 nfs4_verifier sc_verifier
;
5221 struct nfs4_setclientid setclientid
= {
5222 .sc_verifier
= &sc_verifier
,
5226 struct rpc_message msg
= {
5227 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETCLIENTID
],
5228 .rpc_argp
= &setclientid
,
5232 struct rpc_task
*task
;
5233 struct rpc_task_setup task_setup_data
= {
5234 .rpc_client
= clp
->cl_rpcclient
,
5235 .rpc_message
= &msg
,
5236 .callback_ops
= &nfs4_setclientid_ops
,
5237 .callback_data
= &setclientid
,
5238 .flags
= RPC_TASK_TIMEOUT
,
5242 /* nfs_client_id4 */
5243 nfs4_init_boot_verifier(clp
, &sc_verifier
);
5245 if (test_bit(NFS_CS_MIGRATION
, &clp
->cl_flags
))
5246 status
= nfs4_init_uniform_client_string(clp
);
5248 status
= nfs4_init_nonuniform_client_string(clp
);
5254 setclientid
.sc_netid_len
=
5255 nfs4_init_callback_netid(clp
,
5256 setclientid
.sc_netid
,
5257 sizeof(setclientid
.sc_netid
));
5258 setclientid
.sc_uaddr_len
= scnprintf(setclientid
.sc_uaddr
,
5259 sizeof(setclientid
.sc_uaddr
), "%s.%u.%u",
5260 clp
->cl_ipaddr
, port
>> 8, port
& 255);
5262 dprintk("NFS call setclientid auth=%s, '%s'\n",
5263 clp
->cl_rpcclient
->cl_auth
->au_ops
->au_name
,
5265 task
= rpc_run_task(&task_setup_data
);
5267 status
= PTR_ERR(task
);
5270 status
= task
->tk_status
;
5271 if (setclientid
.sc_cred
) {
5272 clp
->cl_acceptor
= rpcauth_stringify_acceptor(setclientid
.sc_cred
);
5273 put_rpccred(setclientid
.sc_cred
);
5277 trace_nfs4_setclientid(clp
, status
);
5278 dprintk("NFS reply setclientid: %d\n", status
);
5283 * nfs4_proc_setclientid_confirm - Confirm client ID
5284 * @clp: state data structure
5285 * @res: result of a previous SETCLIENTID
5286 * @cred: RPC credential to use for this call
5288 * Returns zero, a negative errno, or a negative NFS4ERR status code.
5290 int nfs4_proc_setclientid_confirm(struct nfs_client
*clp
,
5291 struct nfs4_setclientid_res
*arg
,
5292 struct rpc_cred
*cred
)
5294 struct rpc_message msg
= {
5295 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETCLIENTID_CONFIRM
],
5301 dprintk("NFS call setclientid_confirm auth=%s, (client ID %llx)\n",
5302 clp
->cl_rpcclient
->cl_auth
->au_ops
->au_name
,
5304 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
5305 trace_nfs4_setclientid_confirm(clp
, status
);
5306 dprintk("NFS reply setclientid_confirm: %d\n", status
);
5310 struct nfs4_delegreturndata
{
5311 struct nfs4_delegreturnargs args
;
5312 struct nfs4_delegreturnres res
;
5314 nfs4_stateid stateid
;
5315 unsigned long timestamp
;
5316 struct nfs_fattr fattr
;
5318 struct inode
*inode
;
5323 static void nfs4_delegreturn_done(struct rpc_task
*task
, void *calldata
)
5325 struct nfs4_delegreturndata
*data
= calldata
;
5327 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
5330 trace_nfs4_delegreturn_exit(&data
->args
, &data
->res
, task
->tk_status
);
5331 switch (task
->tk_status
) {
5333 renew_lease(data
->res
.server
, data
->timestamp
);
5334 case -NFS4ERR_ADMIN_REVOKED
:
5335 case -NFS4ERR_DELEG_REVOKED
:
5336 case -NFS4ERR_BAD_STATEID
:
5337 case -NFS4ERR_OLD_STATEID
:
5338 case -NFS4ERR_STALE_STATEID
:
5339 case -NFS4ERR_EXPIRED
:
5340 task
->tk_status
= 0;
5342 pnfs_roc_set_barrier(data
->inode
, data
->roc_barrier
);
5345 if (nfs4_async_handle_error(task
, data
->res
.server
,
5346 NULL
, NULL
) == -EAGAIN
) {
5347 rpc_restart_call_prepare(task
);
5351 data
->rpc_status
= task
->tk_status
;
5354 static void nfs4_delegreturn_release(void *calldata
)
5356 struct nfs4_delegreturndata
*data
= calldata
;
5357 struct inode
*inode
= data
->inode
;
5361 pnfs_roc_release(inode
);
5362 nfs_iput_and_deactive(inode
);
5367 static void nfs4_delegreturn_prepare(struct rpc_task
*task
, void *data
)
5369 struct nfs4_delegreturndata
*d_data
;
5371 d_data
= (struct nfs4_delegreturndata
*)data
;
5373 if (nfs4_wait_on_layoutreturn(d_data
->inode
, task
))
5377 pnfs_roc_get_barrier(d_data
->inode
, &d_data
->roc_barrier
);
5379 nfs4_setup_sequence(d_data
->res
.server
,
5380 &d_data
->args
.seq_args
,
5381 &d_data
->res
.seq_res
,
5385 static const struct rpc_call_ops nfs4_delegreturn_ops
= {
5386 .rpc_call_prepare
= nfs4_delegreturn_prepare
,
5387 .rpc_call_done
= nfs4_delegreturn_done
,
5388 .rpc_release
= nfs4_delegreturn_release
,
5391 static int _nfs4_proc_delegreturn(struct inode
*inode
, struct rpc_cred
*cred
, const nfs4_stateid
*stateid
, int issync
)
5393 struct nfs4_delegreturndata
*data
;
5394 struct nfs_server
*server
= NFS_SERVER(inode
);
5395 struct rpc_task
*task
;
5396 struct rpc_message msg
= {
5397 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DELEGRETURN
],
5400 struct rpc_task_setup task_setup_data
= {
5401 .rpc_client
= server
->client
,
5402 .rpc_message
= &msg
,
5403 .callback_ops
= &nfs4_delegreturn_ops
,
5404 .flags
= RPC_TASK_ASYNC
,
5408 data
= kzalloc(sizeof(*data
), GFP_NOFS
);
5411 nfs4_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
5413 nfs4_state_protect(server
->nfs_client
,
5414 NFS_SP4_MACH_CRED_CLEANUP
,
5415 &task_setup_data
.rpc_client
, &msg
);
5417 data
->args
.fhandle
= &data
->fh
;
5418 data
->args
.stateid
= &data
->stateid
;
5419 data
->args
.bitmask
= server
->cache_consistency_bitmask
;
5420 nfs_copy_fh(&data
->fh
, NFS_FH(inode
));
5421 nfs4_stateid_copy(&data
->stateid
, stateid
);
5422 data
->res
.fattr
= &data
->fattr
;
5423 data
->res
.server
= server
;
5424 nfs_fattr_init(data
->res
.fattr
);
5425 data
->timestamp
= jiffies
;
5426 data
->rpc_status
= 0;
5427 data
->inode
= nfs_igrab_and_active(inode
);
5429 data
->roc
= nfs4_roc(inode
);
5431 task_setup_data
.callback_data
= data
;
5432 msg
.rpc_argp
= &data
->args
;
5433 msg
.rpc_resp
= &data
->res
;
5434 task
= rpc_run_task(&task_setup_data
);
5436 return PTR_ERR(task
);
5439 status
= nfs4_wait_for_completion_rpc_task(task
);
5442 status
= data
->rpc_status
;
5444 nfs_post_op_update_inode_force_wcc(inode
, &data
->fattr
);
5446 nfs_refresh_inode(inode
, &data
->fattr
);
5452 int nfs4_proc_delegreturn(struct inode
*inode
, struct rpc_cred
*cred
, const nfs4_stateid
*stateid
, int issync
)
5454 struct nfs_server
*server
= NFS_SERVER(inode
);
5455 struct nfs4_exception exception
= { };
5458 err
= _nfs4_proc_delegreturn(inode
, cred
, stateid
, issync
);
5459 trace_nfs4_delegreturn(inode
, stateid
, err
);
5461 case -NFS4ERR_STALE_STATEID
:
5462 case -NFS4ERR_EXPIRED
:
5466 err
= nfs4_handle_exception(server
, err
, &exception
);
5467 } while (exception
.retry
);
5471 #define NFS4_LOCK_MINTIMEOUT (1 * HZ)
5472 #define NFS4_LOCK_MAXTIMEOUT (30 * HZ)
5475 * sleep, with exponential backoff, and retry the LOCK operation.
5477 static unsigned long
5478 nfs4_set_lock_task_retry(unsigned long timeout
)
5480 freezable_schedule_timeout_killable_unsafe(timeout
);
5482 if (timeout
> NFS4_LOCK_MAXTIMEOUT
)
5483 return NFS4_LOCK_MAXTIMEOUT
;
5487 static int _nfs4_proc_getlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
5489 struct inode
*inode
= state
->inode
;
5490 struct nfs_server
*server
= NFS_SERVER(inode
);
5491 struct nfs_client
*clp
= server
->nfs_client
;
5492 struct nfs_lockt_args arg
= {
5493 .fh
= NFS_FH(inode
),
5496 struct nfs_lockt_res res
= {
5499 struct rpc_message msg
= {
5500 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCKT
],
5503 .rpc_cred
= state
->owner
->so_cred
,
5505 struct nfs4_lock_state
*lsp
;
5508 arg
.lock_owner
.clientid
= clp
->cl_clientid
;
5509 status
= nfs4_set_lock_state(state
, request
);
5512 lsp
= request
->fl_u
.nfs4_fl
.owner
;
5513 arg
.lock_owner
.id
= lsp
->ls_seqid
.owner_id
;
5514 arg
.lock_owner
.s_dev
= server
->s_dev
;
5515 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
5518 request
->fl_type
= F_UNLCK
;
5520 case -NFS4ERR_DENIED
:
5523 request
->fl_ops
->fl_release_private(request
);
5524 request
->fl_ops
= NULL
;
5529 static int nfs4_proc_getlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
5531 struct nfs4_exception exception
= { };
5535 err
= _nfs4_proc_getlk(state
, cmd
, request
);
5536 trace_nfs4_get_lock(request
, state
, cmd
, err
);
5537 err
= nfs4_handle_exception(NFS_SERVER(state
->inode
), err
,
5539 } while (exception
.retry
);
5543 static int do_vfs_lock(struct inode
*inode
, struct file_lock
*fl
)
5545 return locks_lock_inode_wait(inode
, fl
);
5548 struct nfs4_unlockdata
{
5549 struct nfs_locku_args arg
;
5550 struct nfs_locku_res res
;
5551 struct nfs4_lock_state
*lsp
;
5552 struct nfs_open_context
*ctx
;
5553 struct file_lock fl
;
5554 struct nfs_server
*server
;
5555 unsigned long timestamp
;
5558 static struct nfs4_unlockdata
*nfs4_alloc_unlockdata(struct file_lock
*fl
,
5559 struct nfs_open_context
*ctx
,
5560 struct nfs4_lock_state
*lsp
,
5561 struct nfs_seqid
*seqid
)
5563 struct nfs4_unlockdata
*p
;
5564 struct inode
*inode
= lsp
->ls_state
->inode
;
5566 p
= kzalloc(sizeof(*p
), GFP_NOFS
);
5569 p
->arg
.fh
= NFS_FH(inode
);
5571 p
->arg
.seqid
= seqid
;
5572 p
->res
.seqid
= seqid
;
5574 atomic_inc(&lsp
->ls_count
);
5575 /* Ensure we don't close file until we're done freeing locks! */
5576 p
->ctx
= get_nfs_open_context(ctx
);
5577 memcpy(&p
->fl
, fl
, sizeof(p
->fl
));
5578 p
->server
= NFS_SERVER(inode
);
5582 static void nfs4_locku_release_calldata(void *data
)
5584 struct nfs4_unlockdata
*calldata
= data
;
5585 nfs_free_seqid(calldata
->arg
.seqid
);
5586 nfs4_put_lock_state(calldata
->lsp
);
5587 put_nfs_open_context(calldata
->ctx
);
5591 static void nfs4_locku_done(struct rpc_task
*task
, void *data
)
5593 struct nfs4_unlockdata
*calldata
= data
;
5595 if (!nfs4_sequence_done(task
, &calldata
->res
.seq_res
))
5597 switch (task
->tk_status
) {
5599 renew_lease(calldata
->server
, calldata
->timestamp
);
5600 do_vfs_lock(calldata
->lsp
->ls_state
->inode
, &calldata
->fl
);
5601 if (nfs4_update_lock_stateid(calldata
->lsp
,
5602 &calldata
->res
.stateid
))
5604 case -NFS4ERR_BAD_STATEID
:
5605 case -NFS4ERR_OLD_STATEID
:
5606 case -NFS4ERR_STALE_STATEID
:
5607 case -NFS4ERR_EXPIRED
:
5608 if (!nfs4_stateid_match(&calldata
->arg
.stateid
,
5609 &calldata
->lsp
->ls_stateid
))
5610 rpc_restart_call_prepare(task
);
5613 if (nfs4_async_handle_error(task
, calldata
->server
,
5614 NULL
, NULL
) == -EAGAIN
)
5615 rpc_restart_call_prepare(task
);
5617 nfs_release_seqid(calldata
->arg
.seqid
);
5620 static void nfs4_locku_prepare(struct rpc_task
*task
, void *data
)
5622 struct nfs4_unlockdata
*calldata
= data
;
5624 if (nfs_wait_on_sequence(calldata
->arg
.seqid
, task
) != 0)
5626 nfs4_stateid_copy(&calldata
->arg
.stateid
, &calldata
->lsp
->ls_stateid
);
5627 if (test_bit(NFS_LOCK_INITIALIZED
, &calldata
->lsp
->ls_flags
) == 0) {
5628 /* Note: exit _without_ running nfs4_locku_done */
5631 calldata
->timestamp
= jiffies
;
5632 if (nfs4_setup_sequence(calldata
->server
,
5633 &calldata
->arg
.seq_args
,
5634 &calldata
->res
.seq_res
,
5636 nfs_release_seqid(calldata
->arg
.seqid
);
5639 task
->tk_action
= NULL
;
5641 nfs4_sequence_done(task
, &calldata
->res
.seq_res
);
5644 static const struct rpc_call_ops nfs4_locku_ops
= {
5645 .rpc_call_prepare
= nfs4_locku_prepare
,
5646 .rpc_call_done
= nfs4_locku_done
,
5647 .rpc_release
= nfs4_locku_release_calldata
,
5650 static struct rpc_task
*nfs4_do_unlck(struct file_lock
*fl
,
5651 struct nfs_open_context
*ctx
,
5652 struct nfs4_lock_state
*lsp
,
5653 struct nfs_seqid
*seqid
)
5655 struct nfs4_unlockdata
*data
;
5656 struct rpc_message msg
= {
5657 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCKU
],
5658 .rpc_cred
= ctx
->cred
,
5660 struct rpc_task_setup task_setup_data
= {
5661 .rpc_client
= NFS_CLIENT(lsp
->ls_state
->inode
),
5662 .rpc_message
= &msg
,
5663 .callback_ops
= &nfs4_locku_ops
,
5664 .workqueue
= nfsiod_workqueue
,
5665 .flags
= RPC_TASK_ASYNC
,
5668 nfs4_state_protect(NFS_SERVER(lsp
->ls_state
->inode
)->nfs_client
,
5669 NFS_SP4_MACH_CRED_CLEANUP
, &task_setup_data
.rpc_client
, &msg
);
5671 /* Ensure this is an unlock - when canceling a lock, the
5672 * canceled lock is passed in, and it won't be an unlock.
5674 fl
->fl_type
= F_UNLCK
;
5676 data
= nfs4_alloc_unlockdata(fl
, ctx
, lsp
, seqid
);
5678 nfs_free_seqid(seqid
);
5679 return ERR_PTR(-ENOMEM
);
5682 nfs4_init_sequence(&data
->arg
.seq_args
, &data
->res
.seq_res
, 1);
5683 msg
.rpc_argp
= &data
->arg
;
5684 msg
.rpc_resp
= &data
->res
;
5685 task_setup_data
.callback_data
= data
;
5686 return rpc_run_task(&task_setup_data
);
5689 static int nfs4_proc_unlck(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
5691 struct inode
*inode
= state
->inode
;
5692 struct nfs4_state_owner
*sp
= state
->owner
;
5693 struct nfs_inode
*nfsi
= NFS_I(inode
);
5694 struct nfs_seqid
*seqid
;
5695 struct nfs4_lock_state
*lsp
;
5696 struct rpc_task
*task
;
5697 struct nfs_seqid
*(*alloc_seqid
)(struct nfs_seqid_counter
*, gfp_t
);
5699 unsigned char fl_flags
= request
->fl_flags
;
5701 status
= nfs4_set_lock_state(state
, request
);
5702 /* Unlock _before_ we do the RPC call */
5703 request
->fl_flags
|= FL_EXISTS
;
5704 /* Exclude nfs_delegation_claim_locks() */
5705 mutex_lock(&sp
->so_delegreturn_mutex
);
5706 /* Exclude nfs4_reclaim_open_stateid() - note nesting! */
5707 down_read(&nfsi
->rwsem
);
5708 if (do_vfs_lock(inode
, request
) == -ENOENT
) {
5709 up_read(&nfsi
->rwsem
);
5710 mutex_unlock(&sp
->so_delegreturn_mutex
);
5713 up_read(&nfsi
->rwsem
);
5714 mutex_unlock(&sp
->so_delegreturn_mutex
);
5717 /* Is this a delegated lock? */
5718 lsp
= request
->fl_u
.nfs4_fl
.owner
;
5719 if (test_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
) == 0)
5721 alloc_seqid
= NFS_SERVER(inode
)->nfs_client
->cl_mvops
->alloc_seqid
;
5722 seqid
= alloc_seqid(&lsp
->ls_seqid
, GFP_KERNEL
);
5726 task
= nfs4_do_unlck(request
, nfs_file_open_context(request
->fl_file
), lsp
, seqid
);
5727 status
= PTR_ERR(task
);
5730 status
= nfs4_wait_for_completion_rpc_task(task
);
5733 request
->fl_flags
= fl_flags
;
5734 trace_nfs4_unlock(request
, state
, F_SETLK
, status
);
5738 struct nfs4_lockdata
{
5739 struct nfs_lock_args arg
;
5740 struct nfs_lock_res res
;
5741 struct nfs4_lock_state
*lsp
;
5742 struct nfs_open_context
*ctx
;
5743 struct file_lock fl
;
5744 unsigned long timestamp
;
5747 struct nfs_server
*server
;
5750 static struct nfs4_lockdata
*nfs4_alloc_lockdata(struct file_lock
*fl
,
5751 struct nfs_open_context
*ctx
, struct nfs4_lock_state
*lsp
,
5754 struct nfs4_lockdata
*p
;
5755 struct inode
*inode
= lsp
->ls_state
->inode
;
5756 struct nfs_server
*server
= NFS_SERVER(inode
);
5757 struct nfs_seqid
*(*alloc_seqid
)(struct nfs_seqid_counter
*, gfp_t
);
5759 p
= kzalloc(sizeof(*p
), gfp_mask
);
5763 p
->arg
.fh
= NFS_FH(inode
);
5765 p
->arg
.open_seqid
= nfs_alloc_seqid(&lsp
->ls_state
->owner
->so_seqid
, gfp_mask
);
5766 if (IS_ERR(p
->arg
.open_seqid
))
5768 alloc_seqid
= server
->nfs_client
->cl_mvops
->alloc_seqid
;
5769 p
->arg
.lock_seqid
= alloc_seqid(&lsp
->ls_seqid
, gfp_mask
);
5770 if (IS_ERR(p
->arg
.lock_seqid
))
5771 goto out_free_seqid
;
5772 p
->arg
.lock_owner
.clientid
= server
->nfs_client
->cl_clientid
;
5773 p
->arg
.lock_owner
.id
= lsp
->ls_seqid
.owner_id
;
5774 p
->arg
.lock_owner
.s_dev
= server
->s_dev
;
5775 p
->res
.lock_seqid
= p
->arg
.lock_seqid
;
5778 atomic_inc(&lsp
->ls_count
);
5779 p
->ctx
= get_nfs_open_context(ctx
);
5780 get_file(fl
->fl_file
);
5781 memcpy(&p
->fl
, fl
, sizeof(p
->fl
));
5784 nfs_free_seqid(p
->arg
.open_seqid
);
5790 static void nfs4_lock_prepare(struct rpc_task
*task
, void *calldata
)
5792 struct nfs4_lockdata
*data
= calldata
;
5793 struct nfs4_state
*state
= data
->lsp
->ls_state
;
5795 dprintk("%s: begin!\n", __func__
);
5796 if (nfs_wait_on_sequence(data
->arg
.lock_seqid
, task
) != 0)
5798 /* Do we need to do an open_to_lock_owner? */
5799 if (!test_bit(NFS_LOCK_INITIALIZED
, &data
->lsp
->ls_flags
)) {
5800 if (nfs_wait_on_sequence(data
->arg
.open_seqid
, task
) != 0) {
5801 goto out_release_lock_seqid
;
5803 nfs4_stateid_copy(&data
->arg
.open_stateid
,
5804 &state
->open_stateid
);
5805 data
->arg
.new_lock_owner
= 1;
5806 data
->res
.open_seqid
= data
->arg
.open_seqid
;
5808 data
->arg
.new_lock_owner
= 0;
5809 nfs4_stateid_copy(&data
->arg
.lock_stateid
,
5810 &data
->lsp
->ls_stateid
);
5812 if (!nfs4_valid_open_stateid(state
)) {
5813 data
->rpc_status
= -EBADF
;
5814 task
->tk_action
= NULL
;
5815 goto out_release_open_seqid
;
5817 data
->timestamp
= jiffies
;
5818 if (nfs4_setup_sequence(data
->server
,
5819 &data
->arg
.seq_args
,
5823 out_release_open_seqid
:
5824 nfs_release_seqid(data
->arg
.open_seqid
);
5825 out_release_lock_seqid
:
5826 nfs_release_seqid(data
->arg
.lock_seqid
);
5828 nfs4_sequence_done(task
, &data
->res
.seq_res
);
5829 dprintk("%s: done!, ret = %d\n", __func__
, data
->rpc_status
);
5832 static void nfs4_lock_done(struct rpc_task
*task
, void *calldata
)
5834 struct nfs4_lockdata
*data
= calldata
;
5835 struct nfs4_lock_state
*lsp
= data
->lsp
;
5837 dprintk("%s: begin!\n", __func__
);
5839 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
5842 data
->rpc_status
= task
->tk_status
;
5843 switch (task
->tk_status
) {
5845 renew_lease(NFS_SERVER(d_inode(data
->ctx
->dentry
)),
5847 if (data
->arg
.new_lock
) {
5848 data
->fl
.fl_flags
&= ~(FL_SLEEP
| FL_ACCESS
);
5849 if (do_vfs_lock(lsp
->ls_state
->inode
, &data
->fl
) < 0) {
5850 rpc_restart_call_prepare(task
);
5854 if (data
->arg
.new_lock_owner
!= 0) {
5855 nfs_confirm_seqid(&lsp
->ls_seqid
, 0);
5856 nfs4_stateid_copy(&lsp
->ls_stateid
, &data
->res
.stateid
);
5857 set_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
);
5858 } else if (!nfs4_update_lock_stateid(lsp
, &data
->res
.stateid
))
5859 rpc_restart_call_prepare(task
);
5861 case -NFS4ERR_BAD_STATEID
:
5862 case -NFS4ERR_OLD_STATEID
:
5863 case -NFS4ERR_STALE_STATEID
:
5864 case -NFS4ERR_EXPIRED
:
5865 if (data
->arg
.new_lock_owner
!= 0) {
5866 if (!nfs4_stateid_match(&data
->arg
.open_stateid
,
5867 &lsp
->ls_state
->open_stateid
))
5868 rpc_restart_call_prepare(task
);
5869 } else if (!nfs4_stateid_match(&data
->arg
.lock_stateid
,
5871 rpc_restart_call_prepare(task
);
5873 dprintk("%s: done, ret = %d!\n", __func__
, data
->rpc_status
);
5876 static void nfs4_lock_release(void *calldata
)
5878 struct nfs4_lockdata
*data
= calldata
;
5880 dprintk("%s: begin!\n", __func__
);
5881 nfs_free_seqid(data
->arg
.open_seqid
);
5882 if (data
->cancelled
!= 0) {
5883 struct rpc_task
*task
;
5884 task
= nfs4_do_unlck(&data
->fl
, data
->ctx
, data
->lsp
,
5885 data
->arg
.lock_seqid
);
5887 rpc_put_task_async(task
);
5888 dprintk("%s: cancelling lock!\n", __func__
);
5890 nfs_free_seqid(data
->arg
.lock_seqid
);
5891 nfs4_put_lock_state(data
->lsp
);
5892 put_nfs_open_context(data
->ctx
);
5893 fput(data
->fl
.fl_file
);
5895 dprintk("%s: done!\n", __func__
);
5898 static const struct rpc_call_ops nfs4_lock_ops
= {
5899 .rpc_call_prepare
= nfs4_lock_prepare
,
5900 .rpc_call_done
= nfs4_lock_done
,
5901 .rpc_release
= nfs4_lock_release
,
5904 static void nfs4_handle_setlk_error(struct nfs_server
*server
, struct nfs4_lock_state
*lsp
, int new_lock_owner
, int error
)
5907 case -NFS4ERR_ADMIN_REVOKED
:
5908 case -NFS4ERR_BAD_STATEID
:
5909 lsp
->ls_seqid
.flags
&= ~NFS_SEQID_CONFIRMED
;
5910 if (new_lock_owner
!= 0 ||
5911 test_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
) != 0)
5912 nfs4_schedule_stateid_recovery(server
, lsp
->ls_state
);
5914 case -NFS4ERR_STALE_STATEID
:
5915 lsp
->ls_seqid
.flags
&= ~NFS_SEQID_CONFIRMED
;
5916 case -NFS4ERR_EXPIRED
:
5917 nfs4_schedule_lease_recovery(server
->nfs_client
);
5921 static int _nfs4_do_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*fl
, int recovery_type
)
5923 struct nfs4_lockdata
*data
;
5924 struct rpc_task
*task
;
5925 struct rpc_message msg
= {
5926 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCK
],
5927 .rpc_cred
= state
->owner
->so_cred
,
5929 struct rpc_task_setup task_setup_data
= {
5930 .rpc_client
= NFS_CLIENT(state
->inode
),
5931 .rpc_message
= &msg
,
5932 .callback_ops
= &nfs4_lock_ops
,
5933 .workqueue
= nfsiod_workqueue
,
5934 .flags
= RPC_TASK_ASYNC
,
5938 dprintk("%s: begin!\n", __func__
);
5939 data
= nfs4_alloc_lockdata(fl
, nfs_file_open_context(fl
->fl_file
),
5940 fl
->fl_u
.nfs4_fl
.owner
,
5941 recovery_type
== NFS_LOCK_NEW
? GFP_KERNEL
: GFP_NOFS
);
5945 data
->arg
.block
= 1;
5946 nfs4_init_sequence(&data
->arg
.seq_args
, &data
->res
.seq_res
, 1);
5947 msg
.rpc_argp
= &data
->arg
;
5948 msg
.rpc_resp
= &data
->res
;
5949 task_setup_data
.callback_data
= data
;
5950 if (recovery_type
> NFS_LOCK_NEW
) {
5951 if (recovery_type
== NFS_LOCK_RECLAIM
)
5952 data
->arg
.reclaim
= NFS_LOCK_RECLAIM
;
5953 nfs4_set_sequence_privileged(&data
->arg
.seq_args
);
5955 data
->arg
.new_lock
= 1;
5956 task
= rpc_run_task(&task_setup_data
);
5958 return PTR_ERR(task
);
5959 ret
= nfs4_wait_for_completion_rpc_task(task
);
5961 ret
= data
->rpc_status
;
5963 nfs4_handle_setlk_error(data
->server
, data
->lsp
,
5964 data
->arg
.new_lock_owner
, ret
);
5966 data
->cancelled
= 1;
5968 dprintk("%s: done, ret = %d!\n", __func__
, ret
);
5969 trace_nfs4_set_lock(fl
, state
, &data
->res
.stateid
, cmd
, ret
);
5973 static int nfs4_lock_reclaim(struct nfs4_state
*state
, struct file_lock
*request
)
5975 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
5976 struct nfs4_exception exception
= {
5977 .inode
= state
->inode
,
5982 /* Cache the lock if possible... */
5983 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) != 0)
5985 err
= _nfs4_do_setlk(state
, F_SETLK
, request
, NFS_LOCK_RECLAIM
);
5986 if (err
!= -NFS4ERR_DELAY
)
5988 nfs4_handle_exception(server
, err
, &exception
);
5989 } while (exception
.retry
);
5993 static int nfs4_lock_expired(struct nfs4_state
*state
, struct file_lock
*request
)
5995 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
5996 struct nfs4_exception exception
= {
5997 .inode
= state
->inode
,
6001 err
= nfs4_set_lock_state(state
, request
);
6004 if (!recover_lost_locks
) {
6005 set_bit(NFS_LOCK_LOST
, &request
->fl_u
.nfs4_fl
.owner
->ls_flags
);
6009 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) != 0)
6011 err
= _nfs4_do_setlk(state
, F_SETLK
, request
, NFS_LOCK_EXPIRED
);
6015 case -NFS4ERR_GRACE
:
6016 case -NFS4ERR_DELAY
:
6017 nfs4_handle_exception(server
, err
, &exception
);
6020 } while (exception
.retry
);
6025 #if defined(CONFIG_NFS_V4_1)
6027 * nfs41_check_expired_locks - possibly free a lock stateid
6029 * @state: NFSv4 state for an inode
6031 * Returns NFS_OK if recovery for this stateid is now finished.
6032 * Otherwise a negative NFS4ERR value is returned.
6034 static int nfs41_check_expired_locks(struct nfs4_state
*state
)
6036 int status
, ret
= -NFS4ERR_BAD_STATEID
;
6037 struct nfs4_lock_state
*lsp
;
6038 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
6040 list_for_each_entry(lsp
, &state
->lock_states
, ls_locks
) {
6041 if (test_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
)) {
6042 struct rpc_cred
*cred
= lsp
->ls_state
->owner
->so_cred
;
6044 status
= nfs41_test_stateid(server
,
6047 trace_nfs4_test_lock_stateid(state
, lsp
, status
);
6048 if (status
!= NFS_OK
) {
6049 /* Free the stateid unless the server
6050 * informs us the stateid is unrecognized. */
6051 if (status
!= -NFS4ERR_BAD_STATEID
)
6052 nfs41_free_stateid(server
,
6055 clear_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
);
6064 static int nfs41_lock_expired(struct nfs4_state
*state
, struct file_lock
*request
)
6066 int status
= NFS_OK
;
6068 if (test_bit(LK_STATE_IN_USE
, &state
->flags
))
6069 status
= nfs41_check_expired_locks(state
);
6070 if (status
!= NFS_OK
)
6071 status
= nfs4_lock_expired(state
, request
);
6076 static int _nfs4_proc_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
6078 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
6079 struct nfs4_state_owner
*sp
= state
->owner
;
6080 unsigned char fl_flags
= request
->fl_flags
;
6081 int status
= -ENOLCK
;
6083 if ((fl_flags
& FL_POSIX
) &&
6084 !test_bit(NFS_STATE_POSIX_LOCKS
, &state
->flags
))
6086 /* Is this a delegated open? */
6087 status
= nfs4_set_lock_state(state
, request
);
6090 request
->fl_flags
|= FL_ACCESS
;
6091 status
= do_vfs_lock(state
->inode
, request
);
6094 mutex_lock(&sp
->so_delegreturn_mutex
);
6095 down_read(&nfsi
->rwsem
);
6096 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
)) {
6097 /* Yes: cache locks! */
6098 /* ...but avoid races with delegation recall... */
6099 request
->fl_flags
= fl_flags
& ~FL_SLEEP
;
6100 status
= do_vfs_lock(state
->inode
, request
);
6101 up_read(&nfsi
->rwsem
);
6102 mutex_unlock(&sp
->so_delegreturn_mutex
);
6105 up_read(&nfsi
->rwsem
);
6106 mutex_unlock(&sp
->so_delegreturn_mutex
);
6107 status
= _nfs4_do_setlk(state
, cmd
, request
, NFS_LOCK_NEW
);
6109 request
->fl_flags
= fl_flags
;
6113 static int nfs4_proc_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
6115 struct nfs4_exception exception
= {
6117 .inode
= state
->inode
,
6122 err
= _nfs4_proc_setlk(state
, cmd
, request
);
6123 if (err
== -NFS4ERR_DENIED
)
6125 err
= nfs4_handle_exception(NFS_SERVER(state
->inode
),
6127 } while (exception
.retry
);
6132 nfs4_proc_lock(struct file
*filp
, int cmd
, struct file_lock
*request
)
6134 struct nfs_open_context
*ctx
;
6135 struct nfs4_state
*state
;
6136 unsigned long timeout
= NFS4_LOCK_MINTIMEOUT
;
6139 /* verify open state */
6140 ctx
= nfs_file_open_context(filp
);
6143 if (request
->fl_start
< 0 || request
->fl_end
< 0)
6146 if (IS_GETLK(cmd
)) {
6148 return nfs4_proc_getlk(state
, F_GETLK
, request
);
6152 if (!(IS_SETLK(cmd
) || IS_SETLKW(cmd
)))
6155 if (request
->fl_type
== F_UNLCK
) {
6157 return nfs4_proc_unlck(state
, cmd
, request
);
6164 * Don't rely on the VFS having checked the file open mode,
6165 * since it won't do this for flock() locks.
6167 switch (request
->fl_type
) {
6169 if (!(filp
->f_mode
& FMODE_READ
))
6173 if (!(filp
->f_mode
& FMODE_WRITE
))
6178 status
= nfs4_proc_setlk(state
, cmd
, request
);
6179 if ((status
!= -EAGAIN
) || IS_SETLK(cmd
))
6181 timeout
= nfs4_set_lock_task_retry(timeout
);
6182 status
= -ERESTARTSYS
;
6185 } while(status
< 0);
6189 int nfs4_lock_delegation_recall(struct file_lock
*fl
, struct nfs4_state
*state
, const nfs4_stateid
*stateid
)
6191 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
6194 err
= nfs4_set_lock_state(state
, fl
);
6197 err
= _nfs4_do_setlk(state
, F_SETLK
, fl
, NFS_LOCK_NEW
);
6198 return nfs4_handle_delegation_recall_error(server
, state
, stateid
, err
);
6201 struct nfs_release_lockowner_data
{
6202 struct nfs4_lock_state
*lsp
;
6203 struct nfs_server
*server
;
6204 struct nfs_release_lockowner_args args
;
6205 struct nfs_release_lockowner_res res
;
6206 unsigned long timestamp
;
6209 static void nfs4_release_lockowner_prepare(struct rpc_task
*task
, void *calldata
)
6211 struct nfs_release_lockowner_data
*data
= calldata
;
6212 struct nfs_server
*server
= data
->server
;
6213 nfs40_setup_sequence(server
->nfs_client
->cl_slot_tbl
,
6214 &data
->args
.seq_args
, &data
->res
.seq_res
, task
);
6215 data
->args
.lock_owner
.clientid
= server
->nfs_client
->cl_clientid
;
6216 data
->timestamp
= jiffies
;
6219 static void nfs4_release_lockowner_done(struct rpc_task
*task
, void *calldata
)
6221 struct nfs_release_lockowner_data
*data
= calldata
;
6222 struct nfs_server
*server
= data
->server
;
6224 nfs40_sequence_done(task
, &data
->res
.seq_res
);
6226 switch (task
->tk_status
) {
6228 renew_lease(server
, data
->timestamp
);
6230 case -NFS4ERR_STALE_CLIENTID
:
6231 case -NFS4ERR_EXPIRED
:
6232 nfs4_schedule_lease_recovery(server
->nfs_client
);
6234 case -NFS4ERR_LEASE_MOVED
:
6235 case -NFS4ERR_DELAY
:
6236 if (nfs4_async_handle_error(task
, server
,
6237 NULL
, NULL
) == -EAGAIN
)
6238 rpc_restart_call_prepare(task
);
6242 static void nfs4_release_lockowner_release(void *calldata
)
6244 struct nfs_release_lockowner_data
*data
= calldata
;
6245 nfs4_free_lock_state(data
->server
, data
->lsp
);
6249 static const struct rpc_call_ops nfs4_release_lockowner_ops
= {
6250 .rpc_call_prepare
= nfs4_release_lockowner_prepare
,
6251 .rpc_call_done
= nfs4_release_lockowner_done
,
6252 .rpc_release
= nfs4_release_lockowner_release
,
6256 nfs4_release_lockowner(struct nfs_server
*server
, struct nfs4_lock_state
*lsp
)
6258 struct nfs_release_lockowner_data
*data
;
6259 struct rpc_message msg
= {
6260 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RELEASE_LOCKOWNER
],
6263 if (server
->nfs_client
->cl_mvops
->minor_version
!= 0)
6266 data
= kmalloc(sizeof(*data
), GFP_NOFS
);
6270 data
->server
= server
;
6271 data
->args
.lock_owner
.clientid
= server
->nfs_client
->cl_clientid
;
6272 data
->args
.lock_owner
.id
= lsp
->ls_seqid
.owner_id
;
6273 data
->args
.lock_owner
.s_dev
= server
->s_dev
;
6275 msg
.rpc_argp
= &data
->args
;
6276 msg
.rpc_resp
= &data
->res
;
6277 nfs4_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 0);
6278 rpc_call_async(server
->client
, &msg
, 0, &nfs4_release_lockowner_ops
, data
);
6281 #define XATTR_NAME_NFSV4_ACL "system.nfs4_acl"
6283 static int nfs4_xattr_set_nfs4_acl(const struct xattr_handler
*handler
,
6284 struct dentry
*dentry
, const char *key
,
6285 const void *buf
, size_t buflen
,
6288 return nfs4_proc_set_acl(d_inode(dentry
), buf
, buflen
);
6291 static int nfs4_xattr_get_nfs4_acl(const struct xattr_handler
*handler
,
6292 struct dentry
*unused
, struct inode
*inode
,
6293 const char *key
, void *buf
, size_t buflen
)
6295 return nfs4_proc_get_acl(inode
, buf
, buflen
);
6298 static bool nfs4_xattr_list_nfs4_acl(struct dentry
*dentry
)
6300 return nfs4_server_supports_acls(NFS_SERVER(d_inode(dentry
)));
6303 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
6305 static int nfs4_xattr_set_nfs4_label(const struct xattr_handler
*handler
,
6306 struct dentry
*dentry
, const char *key
,
6307 const void *buf
, size_t buflen
,
6310 if (security_ismaclabel(key
))
6311 return nfs4_set_security_label(dentry
, buf
, buflen
);
6316 static int nfs4_xattr_get_nfs4_label(const struct xattr_handler
*handler
,
6317 struct dentry
*unused
, struct inode
*inode
,
6318 const char *key
, void *buf
, size_t buflen
)
6320 if (security_ismaclabel(key
))
6321 return nfs4_get_security_label(inode
, buf
, buflen
);
6326 nfs4_listxattr_nfs4_label(struct inode
*inode
, char *list
, size_t list_len
)
6330 if (nfs_server_capable(inode
, NFS_CAP_SECURITY_LABEL
)) {
6331 len
= security_inode_listsecurity(inode
, list
, list_len
);
6332 if (list_len
&& len
> list_len
)
6338 static const struct xattr_handler nfs4_xattr_nfs4_label_handler
= {
6339 .prefix
= XATTR_SECURITY_PREFIX
,
6340 .get
= nfs4_xattr_get_nfs4_label
,
6341 .set
= nfs4_xattr_set_nfs4_label
,
6347 nfs4_listxattr_nfs4_label(struct inode
*inode
, char *list
, size_t list_len
)
6355 * nfs_fhget will use either the mounted_on_fileid or the fileid
6357 static void nfs_fixup_referral_attributes(struct nfs_fattr
*fattr
)
6359 if (!(((fattr
->valid
& NFS_ATTR_FATTR_MOUNTED_ON_FILEID
) ||
6360 (fattr
->valid
& NFS_ATTR_FATTR_FILEID
)) &&
6361 (fattr
->valid
& NFS_ATTR_FATTR_FSID
) &&
6362 (fattr
->valid
& NFS_ATTR_FATTR_V4_LOCATIONS
)))
6365 fattr
->valid
|= NFS_ATTR_FATTR_TYPE
| NFS_ATTR_FATTR_MODE
|
6366 NFS_ATTR_FATTR_NLINK
| NFS_ATTR_FATTR_V4_REFERRAL
;
6367 fattr
->mode
= S_IFDIR
| S_IRUGO
| S_IXUGO
;
6371 static int _nfs4_proc_fs_locations(struct rpc_clnt
*client
, struct inode
*dir
,
6372 const struct qstr
*name
,
6373 struct nfs4_fs_locations
*fs_locations
,
6376 struct nfs_server
*server
= NFS_SERVER(dir
);
6378 [0] = FATTR4_WORD0_FSID
| FATTR4_WORD0_FS_LOCATIONS
,
6380 struct nfs4_fs_locations_arg args
= {
6381 .dir_fh
= NFS_FH(dir
),
6386 struct nfs4_fs_locations_res res
= {
6387 .fs_locations
= fs_locations
,
6389 struct rpc_message msg
= {
6390 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FS_LOCATIONS
],
6396 dprintk("%s: start\n", __func__
);
6398 /* Ask for the fileid of the absent filesystem if mounted_on_fileid
6399 * is not supported */
6400 if (NFS_SERVER(dir
)->attr_bitmask
[1] & FATTR4_WORD1_MOUNTED_ON_FILEID
)
6401 bitmask
[1] |= FATTR4_WORD1_MOUNTED_ON_FILEID
;
6403 bitmask
[0] |= FATTR4_WORD0_FILEID
;
6405 nfs_fattr_init(&fs_locations
->fattr
);
6406 fs_locations
->server
= server
;
6407 fs_locations
->nlocations
= 0;
6408 status
= nfs4_call_sync(client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
6409 dprintk("%s: returned status = %d\n", __func__
, status
);
6413 int nfs4_proc_fs_locations(struct rpc_clnt
*client
, struct inode
*dir
,
6414 const struct qstr
*name
,
6415 struct nfs4_fs_locations
*fs_locations
,
6418 struct nfs4_exception exception
= { };
6421 err
= _nfs4_proc_fs_locations(client
, dir
, name
,
6422 fs_locations
, page
);
6423 trace_nfs4_get_fs_locations(dir
, name
, err
);
6424 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
6426 } while (exception
.retry
);
6431 * This operation also signals the server that this client is
6432 * performing migration recovery. The server can stop returning
6433 * NFS4ERR_LEASE_MOVED to this client. A RENEW operation is
6434 * appended to this compound to identify the client ID which is
6435 * performing recovery.
6437 static int _nfs40_proc_get_locations(struct inode
*inode
,
6438 struct nfs4_fs_locations
*locations
,
6439 struct page
*page
, struct rpc_cred
*cred
)
6441 struct nfs_server
*server
= NFS_SERVER(inode
);
6442 struct rpc_clnt
*clnt
= server
->client
;
6444 [0] = FATTR4_WORD0_FSID
| FATTR4_WORD0_FS_LOCATIONS
,
6446 struct nfs4_fs_locations_arg args
= {
6447 .clientid
= server
->nfs_client
->cl_clientid
,
6448 .fh
= NFS_FH(inode
),
6451 .migration
= 1, /* skip LOOKUP */
6452 .renew
= 1, /* append RENEW */
6454 struct nfs4_fs_locations_res res
= {
6455 .fs_locations
= locations
,
6459 struct rpc_message msg
= {
6460 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FS_LOCATIONS
],
6465 unsigned long now
= jiffies
;
6468 nfs_fattr_init(&locations
->fattr
);
6469 locations
->server
= server
;
6470 locations
->nlocations
= 0;
6472 nfs4_init_sequence(&args
.seq_args
, &res
.seq_res
, 0);
6473 nfs4_set_sequence_privileged(&args
.seq_args
);
6474 status
= nfs4_call_sync_sequence(clnt
, server
, &msg
,
6475 &args
.seq_args
, &res
.seq_res
);
6479 renew_lease(server
, now
);
6483 #ifdef CONFIG_NFS_V4_1
6486 * This operation also signals the server that this client is
6487 * performing migration recovery. The server can stop asserting
6488 * SEQ4_STATUS_LEASE_MOVED for this client. The client ID
6489 * performing this operation is identified in the SEQUENCE
6490 * operation in this compound.
6492 * When the client supports GETATTR(fs_locations_info), it can
6493 * be plumbed in here.
6495 static int _nfs41_proc_get_locations(struct inode
*inode
,
6496 struct nfs4_fs_locations
*locations
,
6497 struct page
*page
, struct rpc_cred
*cred
)
6499 struct nfs_server
*server
= NFS_SERVER(inode
);
6500 struct rpc_clnt
*clnt
= server
->client
;
6502 [0] = FATTR4_WORD0_FSID
| FATTR4_WORD0_FS_LOCATIONS
,
6504 struct nfs4_fs_locations_arg args
= {
6505 .fh
= NFS_FH(inode
),
6508 .migration
= 1, /* skip LOOKUP */
6510 struct nfs4_fs_locations_res res
= {
6511 .fs_locations
= locations
,
6514 struct rpc_message msg
= {
6515 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FS_LOCATIONS
],
6522 nfs_fattr_init(&locations
->fattr
);
6523 locations
->server
= server
;
6524 locations
->nlocations
= 0;
6526 nfs4_init_sequence(&args
.seq_args
, &res
.seq_res
, 0);
6527 nfs4_set_sequence_privileged(&args
.seq_args
);
6528 status
= nfs4_call_sync_sequence(clnt
, server
, &msg
,
6529 &args
.seq_args
, &res
.seq_res
);
6530 if (status
== NFS4_OK
&&
6531 res
.seq_res
.sr_status_flags
& SEQ4_STATUS_LEASE_MOVED
)
6532 status
= -NFS4ERR_LEASE_MOVED
;
6536 #endif /* CONFIG_NFS_V4_1 */
6539 * nfs4_proc_get_locations - discover locations for a migrated FSID
6540 * @inode: inode on FSID that is migrating
6541 * @locations: result of query
6543 * @cred: credential to use for this operation
6545 * Returns NFS4_OK on success, a negative NFS4ERR status code if the
6546 * operation failed, or a negative errno if a local error occurred.
6548 * On success, "locations" is filled in, but if the server has
6549 * no locations information, NFS_ATTR_FATTR_V4_LOCATIONS is not
6552 * -NFS4ERR_LEASE_MOVED is returned if the server still has leases
6553 * from this client that require migration recovery.
6555 int nfs4_proc_get_locations(struct inode
*inode
,
6556 struct nfs4_fs_locations
*locations
,
6557 struct page
*page
, struct rpc_cred
*cred
)
6559 struct nfs_server
*server
= NFS_SERVER(inode
);
6560 struct nfs_client
*clp
= server
->nfs_client
;
6561 const struct nfs4_mig_recovery_ops
*ops
=
6562 clp
->cl_mvops
->mig_recovery_ops
;
6563 struct nfs4_exception exception
= { };
6566 dprintk("%s: FSID %llx:%llx on \"%s\"\n", __func__
,
6567 (unsigned long long)server
->fsid
.major
,
6568 (unsigned long long)server
->fsid
.minor
,
6570 nfs_display_fhandle(NFS_FH(inode
), __func__
);
6573 status
= ops
->get_locations(inode
, locations
, page
, cred
);
6574 if (status
!= -NFS4ERR_DELAY
)
6576 nfs4_handle_exception(server
, status
, &exception
);
6577 } while (exception
.retry
);
6582 * This operation also signals the server that this client is
6583 * performing "lease moved" recovery. The server can stop
6584 * returning NFS4ERR_LEASE_MOVED to this client. A RENEW operation
6585 * is appended to this compound to identify the client ID which is
6586 * performing recovery.
6588 static int _nfs40_proc_fsid_present(struct inode
*inode
, struct rpc_cred
*cred
)
6590 struct nfs_server
*server
= NFS_SERVER(inode
);
6591 struct nfs_client
*clp
= NFS_SERVER(inode
)->nfs_client
;
6592 struct rpc_clnt
*clnt
= server
->client
;
6593 struct nfs4_fsid_present_arg args
= {
6594 .fh
= NFS_FH(inode
),
6595 .clientid
= clp
->cl_clientid
,
6596 .renew
= 1, /* append RENEW */
6598 struct nfs4_fsid_present_res res
= {
6601 struct rpc_message msg
= {
6602 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FSID_PRESENT
],
6607 unsigned long now
= jiffies
;
6610 res
.fh
= nfs_alloc_fhandle();
6614 nfs4_init_sequence(&args
.seq_args
, &res
.seq_res
, 0);
6615 nfs4_set_sequence_privileged(&args
.seq_args
);
6616 status
= nfs4_call_sync_sequence(clnt
, server
, &msg
,
6617 &args
.seq_args
, &res
.seq_res
);
6618 nfs_free_fhandle(res
.fh
);
6622 do_renew_lease(clp
, now
);
6626 #ifdef CONFIG_NFS_V4_1
6629 * This operation also signals the server that this client is
6630 * performing "lease moved" recovery. The server can stop asserting
6631 * SEQ4_STATUS_LEASE_MOVED for this client. The client ID performing
6632 * this operation is identified in the SEQUENCE operation in this
6635 static int _nfs41_proc_fsid_present(struct inode
*inode
, struct rpc_cred
*cred
)
6637 struct nfs_server
*server
= NFS_SERVER(inode
);
6638 struct rpc_clnt
*clnt
= server
->client
;
6639 struct nfs4_fsid_present_arg args
= {
6640 .fh
= NFS_FH(inode
),
6642 struct nfs4_fsid_present_res res
= {
6644 struct rpc_message msg
= {
6645 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FSID_PRESENT
],
6652 res
.fh
= nfs_alloc_fhandle();
6656 nfs4_init_sequence(&args
.seq_args
, &res
.seq_res
, 0);
6657 nfs4_set_sequence_privileged(&args
.seq_args
);
6658 status
= nfs4_call_sync_sequence(clnt
, server
, &msg
,
6659 &args
.seq_args
, &res
.seq_res
);
6660 nfs_free_fhandle(res
.fh
);
6661 if (status
== NFS4_OK
&&
6662 res
.seq_res
.sr_status_flags
& SEQ4_STATUS_LEASE_MOVED
)
6663 status
= -NFS4ERR_LEASE_MOVED
;
6667 #endif /* CONFIG_NFS_V4_1 */
6670 * nfs4_proc_fsid_present - Is this FSID present or absent on server?
6671 * @inode: inode on FSID to check
6672 * @cred: credential to use for this operation
6674 * Server indicates whether the FSID is present, moved, or not
6675 * recognized. This operation is necessary to clear a LEASE_MOVED
6676 * condition for this client ID.
6678 * Returns NFS4_OK if the FSID is present on this server,
6679 * -NFS4ERR_MOVED if the FSID is no longer present, a negative
6680 * NFS4ERR code if some error occurred on the server, or a
6681 * negative errno if a local failure occurred.
6683 int nfs4_proc_fsid_present(struct inode
*inode
, struct rpc_cred
*cred
)
6685 struct nfs_server
*server
= NFS_SERVER(inode
);
6686 struct nfs_client
*clp
= server
->nfs_client
;
6687 const struct nfs4_mig_recovery_ops
*ops
=
6688 clp
->cl_mvops
->mig_recovery_ops
;
6689 struct nfs4_exception exception
= { };
6692 dprintk("%s: FSID %llx:%llx on \"%s\"\n", __func__
,
6693 (unsigned long long)server
->fsid
.major
,
6694 (unsigned long long)server
->fsid
.minor
,
6696 nfs_display_fhandle(NFS_FH(inode
), __func__
);
6699 status
= ops
->fsid_present(inode
, cred
);
6700 if (status
!= -NFS4ERR_DELAY
)
6702 nfs4_handle_exception(server
, status
, &exception
);
6703 } while (exception
.retry
);
6708 * If 'use_integrity' is true and the state managment nfs_client
6709 * cl_rpcclient is using krb5i/p, use the integrity protected cl_rpcclient
6710 * and the machine credential as per RFC3530bis and RFC5661 Security
6711 * Considerations sections. Otherwise, just use the user cred with the
6712 * filesystem's rpc_client.
6714 static int _nfs4_proc_secinfo(struct inode
*dir
, const struct qstr
*name
, struct nfs4_secinfo_flavors
*flavors
, bool use_integrity
)
6717 struct nfs4_secinfo_arg args
= {
6718 .dir_fh
= NFS_FH(dir
),
6721 struct nfs4_secinfo_res res
= {
6724 struct rpc_message msg
= {
6725 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SECINFO
],
6729 struct rpc_clnt
*clnt
= NFS_SERVER(dir
)->client
;
6730 struct rpc_cred
*cred
= NULL
;
6732 if (use_integrity
) {
6733 clnt
= NFS_SERVER(dir
)->nfs_client
->cl_rpcclient
;
6734 cred
= nfs4_get_clid_cred(NFS_SERVER(dir
)->nfs_client
);
6735 msg
.rpc_cred
= cred
;
6738 dprintk("NFS call secinfo %s\n", name
->name
);
6740 nfs4_state_protect(NFS_SERVER(dir
)->nfs_client
,
6741 NFS_SP4_MACH_CRED_SECINFO
, &clnt
, &msg
);
6743 status
= nfs4_call_sync(clnt
, NFS_SERVER(dir
), &msg
, &args
.seq_args
,
6745 dprintk("NFS reply secinfo: %d\n", status
);
6753 int nfs4_proc_secinfo(struct inode
*dir
, const struct qstr
*name
,
6754 struct nfs4_secinfo_flavors
*flavors
)
6756 struct nfs4_exception exception
= { };
6759 err
= -NFS4ERR_WRONGSEC
;
6761 /* try to use integrity protection with machine cred */
6762 if (_nfs4_is_integrity_protected(NFS_SERVER(dir
)->nfs_client
))
6763 err
= _nfs4_proc_secinfo(dir
, name
, flavors
, true);
6766 * if unable to use integrity protection, or SECINFO with
6767 * integrity protection returns NFS4ERR_WRONGSEC (which is
6768 * disallowed by spec, but exists in deployed servers) use
6769 * the current filesystem's rpc_client and the user cred.
6771 if (err
== -NFS4ERR_WRONGSEC
)
6772 err
= _nfs4_proc_secinfo(dir
, name
, flavors
, false);
6774 trace_nfs4_secinfo(dir
, name
, err
);
6775 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
6777 } while (exception
.retry
);
6781 #ifdef CONFIG_NFS_V4_1
6783 * Check the exchange flags returned by the server for invalid flags, having
6784 * both PNFS and NON_PNFS flags set, and not having one of NON_PNFS, PNFS, or
6787 static int nfs4_check_cl_exchange_flags(u32 flags
)
6789 if (flags
& ~EXCHGID4_FLAG_MASK_R
)
6791 if ((flags
& EXCHGID4_FLAG_USE_PNFS_MDS
) &&
6792 (flags
& EXCHGID4_FLAG_USE_NON_PNFS
))
6794 if (!(flags
& (EXCHGID4_FLAG_MASK_PNFS
)))
6798 return -NFS4ERR_INVAL
;
6802 nfs41_same_server_scope(struct nfs41_server_scope
*a
,
6803 struct nfs41_server_scope
*b
)
6805 if (a
->server_scope_sz
== b
->server_scope_sz
&&
6806 memcmp(a
->server_scope
, b
->server_scope
, a
->server_scope_sz
) == 0)
6813 nfs4_bind_one_conn_to_session_done(struct rpc_task
*task
, void *calldata
)
6817 static const struct rpc_call_ops nfs4_bind_one_conn_to_session_ops
= {
6818 .rpc_call_done
= &nfs4_bind_one_conn_to_session_done
,
6822 * nfs4_proc_bind_one_conn_to_session()
6824 * The 4.1 client currently uses the same TCP connection for the
6825 * fore and backchannel.
6828 int nfs4_proc_bind_one_conn_to_session(struct rpc_clnt
*clnt
,
6829 struct rpc_xprt
*xprt
,
6830 struct nfs_client
*clp
,
6831 struct rpc_cred
*cred
)
6834 struct nfs41_bind_conn_to_session_args args
= {
6836 .dir
= NFS4_CDFC4_FORE_OR_BOTH
,
6838 struct nfs41_bind_conn_to_session_res res
;
6839 struct rpc_message msg
= {
6841 &nfs4_procedures
[NFSPROC4_CLNT_BIND_CONN_TO_SESSION
],
6846 struct rpc_task_setup task_setup_data
= {
6849 .callback_ops
= &nfs4_bind_one_conn_to_session_ops
,
6850 .rpc_message
= &msg
,
6851 .flags
= RPC_TASK_TIMEOUT
,
6853 struct rpc_task
*task
;
6855 dprintk("--> %s\n", __func__
);
6857 nfs4_copy_sessionid(&args
.sessionid
, &clp
->cl_session
->sess_id
);
6858 if (!(clp
->cl_session
->flags
& SESSION4_BACK_CHAN
))
6859 args
.dir
= NFS4_CDFC4_FORE
;
6861 /* Do not set the backchannel flag unless this is clnt->cl_xprt */
6862 if (xprt
!= rcu_access_pointer(clnt
->cl_xprt
))
6863 args
.dir
= NFS4_CDFC4_FORE
;
6865 task
= rpc_run_task(&task_setup_data
);
6866 if (!IS_ERR(task
)) {
6867 status
= task
->tk_status
;
6870 status
= PTR_ERR(task
);
6871 trace_nfs4_bind_conn_to_session(clp
, status
);
6873 if (memcmp(res
.sessionid
.data
,
6874 clp
->cl_session
->sess_id
.data
, NFS4_MAX_SESSIONID_LEN
)) {
6875 dprintk("NFS: %s: Session ID mismatch\n", __func__
);
6879 if ((res
.dir
& args
.dir
) != res
.dir
|| res
.dir
== 0) {
6880 dprintk("NFS: %s: Unexpected direction from server\n",
6885 if (res
.use_conn_in_rdma_mode
!= args
.use_conn_in_rdma_mode
) {
6886 dprintk("NFS: %s: Server returned RDMA mode = true\n",
6893 dprintk("<-- %s status= %d\n", __func__
, status
);
6897 struct rpc_bind_conn_calldata
{
6898 struct nfs_client
*clp
;
6899 struct rpc_cred
*cred
;
6903 nfs4_proc_bind_conn_to_session_callback(struct rpc_clnt
*clnt
,
6904 struct rpc_xprt
*xprt
,
6907 struct rpc_bind_conn_calldata
*p
= calldata
;
6909 return nfs4_proc_bind_one_conn_to_session(clnt
, xprt
, p
->clp
, p
->cred
);
6912 int nfs4_proc_bind_conn_to_session(struct nfs_client
*clp
, struct rpc_cred
*cred
)
6914 struct rpc_bind_conn_calldata data
= {
6918 return rpc_clnt_iterate_for_each_xprt(clp
->cl_rpcclient
,
6919 nfs4_proc_bind_conn_to_session_callback
, &data
);
6923 * Minimum set of SP4_MACH_CRED operations from RFC 5661 in the enforce map
6924 * and operations we'd like to see to enable certain features in the allow map
6926 static const struct nfs41_state_protection nfs4_sp4_mach_cred_request
= {
6927 .how
= SP4_MACH_CRED
,
6928 .enforce
.u
.words
= {
6929 [1] = 1 << (OP_BIND_CONN_TO_SESSION
- 32) |
6930 1 << (OP_EXCHANGE_ID
- 32) |
6931 1 << (OP_CREATE_SESSION
- 32) |
6932 1 << (OP_DESTROY_SESSION
- 32) |
6933 1 << (OP_DESTROY_CLIENTID
- 32)
6936 [0] = 1 << (OP_CLOSE
) |
6937 1 << (OP_OPEN_DOWNGRADE
) |
6939 1 << (OP_DELEGRETURN
) |
6941 [1] = 1 << (OP_SECINFO
- 32) |
6942 1 << (OP_SECINFO_NO_NAME
- 32) |
6943 1 << (OP_LAYOUTRETURN
- 32) |
6944 1 << (OP_TEST_STATEID
- 32) |
6945 1 << (OP_FREE_STATEID
- 32) |
6946 1 << (OP_WRITE
- 32)
6951 * Select the state protection mode for client `clp' given the server results
6952 * from exchange_id in `sp'.
6954 * Returns 0 on success, negative errno otherwise.
6956 static int nfs4_sp4_select_mode(struct nfs_client
*clp
,
6957 struct nfs41_state_protection
*sp
)
6959 static const u32 supported_enforce
[NFS4_OP_MAP_NUM_WORDS
] = {
6960 [1] = 1 << (OP_BIND_CONN_TO_SESSION
- 32) |
6961 1 << (OP_EXCHANGE_ID
- 32) |
6962 1 << (OP_CREATE_SESSION
- 32) |
6963 1 << (OP_DESTROY_SESSION
- 32) |
6964 1 << (OP_DESTROY_CLIENTID
- 32)
6968 if (sp
->how
== SP4_MACH_CRED
) {
6969 /* Print state protect result */
6970 dfprintk(MOUNT
, "Server SP4_MACH_CRED support:\n");
6971 for (i
= 0; i
<= LAST_NFS4_OP
; i
++) {
6972 if (test_bit(i
, sp
->enforce
.u
.longs
))
6973 dfprintk(MOUNT
, " enforce op %d\n", i
);
6974 if (test_bit(i
, sp
->allow
.u
.longs
))
6975 dfprintk(MOUNT
, " allow op %d\n", i
);
6978 /* make sure nothing is on enforce list that isn't supported */
6979 for (i
= 0; i
< NFS4_OP_MAP_NUM_WORDS
; i
++) {
6980 if (sp
->enforce
.u
.words
[i
] & ~supported_enforce
[i
]) {
6981 dfprintk(MOUNT
, "sp4_mach_cred: disabled\n");
6987 * Minimal mode - state operations are allowed to use machine
6988 * credential. Note this already happens by default, so the
6989 * client doesn't have to do anything more than the negotiation.
6991 * NOTE: we don't care if EXCHANGE_ID is in the list -
6992 * we're already using the machine cred for exchange_id
6993 * and will never use a different cred.
6995 if (test_bit(OP_BIND_CONN_TO_SESSION
, sp
->enforce
.u
.longs
) &&
6996 test_bit(OP_CREATE_SESSION
, sp
->enforce
.u
.longs
) &&
6997 test_bit(OP_DESTROY_SESSION
, sp
->enforce
.u
.longs
) &&
6998 test_bit(OP_DESTROY_CLIENTID
, sp
->enforce
.u
.longs
)) {
6999 dfprintk(MOUNT
, "sp4_mach_cred:\n");
7000 dfprintk(MOUNT
, " minimal mode enabled\n");
7001 set_bit(NFS_SP4_MACH_CRED_MINIMAL
, &clp
->cl_sp4_flags
);
7003 dfprintk(MOUNT
, "sp4_mach_cred: disabled\n");
7007 if (test_bit(OP_CLOSE
, sp
->allow
.u
.longs
) &&
7008 test_bit(OP_OPEN_DOWNGRADE
, sp
->allow
.u
.longs
) &&
7009 test_bit(OP_DELEGRETURN
, sp
->allow
.u
.longs
) &&
7010 test_bit(OP_LOCKU
, sp
->allow
.u
.longs
)) {
7011 dfprintk(MOUNT
, " cleanup mode enabled\n");
7012 set_bit(NFS_SP4_MACH_CRED_CLEANUP
, &clp
->cl_sp4_flags
);
7015 if (test_bit(OP_LAYOUTRETURN
, sp
->allow
.u
.longs
)) {
7016 dfprintk(MOUNT
, " pnfs cleanup mode enabled\n");
7017 set_bit(NFS_SP4_MACH_CRED_PNFS_CLEANUP
,
7018 &clp
->cl_sp4_flags
);
7021 if (test_bit(OP_SECINFO
, sp
->allow
.u
.longs
) &&
7022 test_bit(OP_SECINFO_NO_NAME
, sp
->allow
.u
.longs
)) {
7023 dfprintk(MOUNT
, " secinfo mode enabled\n");
7024 set_bit(NFS_SP4_MACH_CRED_SECINFO
, &clp
->cl_sp4_flags
);
7027 if (test_bit(OP_TEST_STATEID
, sp
->allow
.u
.longs
) &&
7028 test_bit(OP_FREE_STATEID
, sp
->allow
.u
.longs
)) {
7029 dfprintk(MOUNT
, " stateid mode enabled\n");
7030 set_bit(NFS_SP4_MACH_CRED_STATEID
, &clp
->cl_sp4_flags
);
7033 if (test_bit(OP_WRITE
, sp
->allow
.u
.longs
)) {
7034 dfprintk(MOUNT
, " write mode enabled\n");
7035 set_bit(NFS_SP4_MACH_CRED_WRITE
, &clp
->cl_sp4_flags
);
7038 if (test_bit(OP_COMMIT
, sp
->allow
.u
.longs
)) {
7039 dfprintk(MOUNT
, " commit mode enabled\n");
7040 set_bit(NFS_SP4_MACH_CRED_COMMIT
, &clp
->cl_sp4_flags
);
7048 * _nfs4_proc_exchange_id()
7050 * Wrapper for EXCHANGE_ID operation.
7052 static int _nfs4_proc_exchange_id(struct nfs_client
*clp
, struct rpc_cred
*cred
,
7055 nfs4_verifier verifier
;
7056 struct nfs41_exchange_id_args args
= {
7057 .verifier
= &verifier
,
7059 #ifdef CONFIG_NFS_V4_1_MIGRATION
7060 .flags
= EXCHGID4_FLAG_SUPP_MOVED_REFER
|
7061 EXCHGID4_FLAG_BIND_PRINC_STATEID
|
7062 EXCHGID4_FLAG_SUPP_MOVED_MIGR
,
7064 .flags
= EXCHGID4_FLAG_SUPP_MOVED_REFER
|
7065 EXCHGID4_FLAG_BIND_PRINC_STATEID
,
7068 struct nfs41_exchange_id_res res
= {
7072 struct rpc_message msg
= {
7073 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_EXCHANGE_ID
],
7079 nfs4_init_boot_verifier(clp
, &verifier
);
7081 status
= nfs4_init_uniform_client_string(clp
);
7085 dprintk("NFS call exchange_id auth=%s, '%s'\n",
7086 clp
->cl_rpcclient
->cl_auth
->au_ops
->au_name
,
7089 res
.server_owner
= kzalloc(sizeof(struct nfs41_server_owner
),
7091 if (unlikely(res
.server_owner
== NULL
)) {
7096 res
.server_scope
= kzalloc(sizeof(struct nfs41_server_scope
),
7098 if (unlikely(res
.server_scope
== NULL
)) {
7100 goto out_server_owner
;
7103 res
.impl_id
= kzalloc(sizeof(struct nfs41_impl_id
), GFP_NOFS
);
7104 if (unlikely(res
.impl_id
== NULL
)) {
7106 goto out_server_scope
;
7111 args
.state_protect
.how
= SP4_NONE
;
7115 args
.state_protect
= nfs4_sp4_mach_cred_request
;
7125 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
7126 trace_nfs4_exchange_id(clp
, status
);
7128 status
= nfs4_check_cl_exchange_flags(res
.flags
);
7131 status
= nfs4_sp4_select_mode(clp
, &res
.state_protect
);
7134 clp
->cl_clientid
= res
.clientid
;
7135 clp
->cl_exchange_flags
= res
.flags
;
7136 /* Client ID is not confirmed */
7137 if (!(res
.flags
& EXCHGID4_FLAG_CONFIRMED_R
)) {
7138 clear_bit(NFS4_SESSION_ESTABLISHED
,
7139 &clp
->cl_session
->session_state
);
7140 clp
->cl_seqid
= res
.seqid
;
7143 kfree(clp
->cl_serverowner
);
7144 clp
->cl_serverowner
= res
.server_owner
;
7145 res
.server_owner
= NULL
;
7147 /* use the most recent implementation id */
7148 kfree(clp
->cl_implid
);
7149 clp
->cl_implid
= res
.impl_id
;
7152 if (clp
->cl_serverscope
!= NULL
&&
7153 !nfs41_same_server_scope(clp
->cl_serverscope
,
7154 res
.server_scope
)) {
7155 dprintk("%s: server_scope mismatch detected\n",
7157 set_bit(NFS4CLNT_SERVER_SCOPE_MISMATCH
, &clp
->cl_state
);
7158 kfree(clp
->cl_serverscope
);
7159 clp
->cl_serverscope
= NULL
;
7162 if (clp
->cl_serverscope
== NULL
) {
7163 clp
->cl_serverscope
= res
.server_scope
;
7164 res
.server_scope
= NULL
;
7171 kfree(res
.server_scope
);
7173 kfree(res
.server_owner
);
7175 if (clp
->cl_implid
!= NULL
)
7176 dprintk("NFS reply exchange_id: Server Implementation ID: "
7177 "domain: %s, name: %s, date: %llu,%u\n",
7178 clp
->cl_implid
->domain
, clp
->cl_implid
->name
,
7179 clp
->cl_implid
->date
.seconds
,
7180 clp
->cl_implid
->date
.nseconds
);
7181 dprintk("NFS reply exchange_id: %d\n", status
);
7186 * nfs4_proc_exchange_id()
7188 * Returns zero, a negative errno, or a negative NFS4ERR status code.
7190 * Since the clientid has expired, all compounds using sessions
7191 * associated with the stale clientid will be returning
7192 * NFS4ERR_BADSESSION in the sequence operation, and will therefore
7193 * be in some phase of session reset.
7195 * Will attempt to negotiate SP4_MACH_CRED if krb5i / krb5p auth is used.
7197 int nfs4_proc_exchange_id(struct nfs_client
*clp
, struct rpc_cred
*cred
)
7199 rpc_authflavor_t authflavor
= clp
->cl_rpcclient
->cl_auth
->au_flavor
;
7202 /* try SP4_MACH_CRED if krb5i/p */
7203 if (authflavor
== RPC_AUTH_GSS_KRB5I
||
7204 authflavor
== RPC_AUTH_GSS_KRB5P
) {
7205 status
= _nfs4_proc_exchange_id(clp
, cred
, SP4_MACH_CRED
);
7211 return _nfs4_proc_exchange_id(clp
, cred
, SP4_NONE
);
7214 static int _nfs4_proc_destroy_clientid(struct nfs_client
*clp
,
7215 struct rpc_cred
*cred
)
7217 struct rpc_message msg
= {
7218 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DESTROY_CLIENTID
],
7224 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
7225 trace_nfs4_destroy_clientid(clp
, status
);
7227 dprintk("NFS: Got error %d from the server %s on "
7228 "DESTROY_CLIENTID.", status
, clp
->cl_hostname
);
7232 static int nfs4_proc_destroy_clientid(struct nfs_client
*clp
,
7233 struct rpc_cred
*cred
)
7238 for (loop
= NFS4_MAX_LOOP_ON_RECOVER
; loop
!= 0; loop
--) {
7239 ret
= _nfs4_proc_destroy_clientid(clp
, cred
);
7241 case -NFS4ERR_DELAY
:
7242 case -NFS4ERR_CLIENTID_BUSY
:
7252 int nfs4_destroy_clientid(struct nfs_client
*clp
)
7254 struct rpc_cred
*cred
;
7257 if (clp
->cl_mvops
->minor_version
< 1)
7259 if (clp
->cl_exchange_flags
== 0)
7261 if (clp
->cl_preserve_clid
)
7263 cred
= nfs4_get_clid_cred(clp
);
7264 ret
= nfs4_proc_destroy_clientid(clp
, cred
);
7269 case -NFS4ERR_STALE_CLIENTID
:
7270 clp
->cl_exchange_flags
= 0;
7276 struct nfs4_get_lease_time_data
{
7277 struct nfs4_get_lease_time_args
*args
;
7278 struct nfs4_get_lease_time_res
*res
;
7279 struct nfs_client
*clp
;
7282 static void nfs4_get_lease_time_prepare(struct rpc_task
*task
,
7285 struct nfs4_get_lease_time_data
*data
=
7286 (struct nfs4_get_lease_time_data
*)calldata
;
7288 dprintk("--> %s\n", __func__
);
7289 /* just setup sequence, do not trigger session recovery
7290 since we're invoked within one */
7291 nfs41_setup_sequence(data
->clp
->cl_session
,
7292 &data
->args
->la_seq_args
,
7293 &data
->res
->lr_seq_res
,
7295 dprintk("<-- %s\n", __func__
);
7299 * Called from nfs4_state_manager thread for session setup, so don't recover
7300 * from sequence operation or clientid errors.
7302 static void nfs4_get_lease_time_done(struct rpc_task
*task
, void *calldata
)
7304 struct nfs4_get_lease_time_data
*data
=
7305 (struct nfs4_get_lease_time_data
*)calldata
;
7307 dprintk("--> %s\n", __func__
);
7308 if (!nfs41_sequence_done(task
, &data
->res
->lr_seq_res
))
7310 switch (task
->tk_status
) {
7311 case -NFS4ERR_DELAY
:
7312 case -NFS4ERR_GRACE
:
7313 dprintk("%s Retry: tk_status %d\n", __func__
, task
->tk_status
);
7314 rpc_delay(task
, NFS4_POLL_RETRY_MIN
);
7315 task
->tk_status
= 0;
7317 case -NFS4ERR_RETRY_UNCACHED_REP
:
7318 rpc_restart_call_prepare(task
);
7321 dprintk("<-- %s\n", __func__
);
7324 static const struct rpc_call_ops nfs4_get_lease_time_ops
= {
7325 .rpc_call_prepare
= nfs4_get_lease_time_prepare
,
7326 .rpc_call_done
= nfs4_get_lease_time_done
,
7329 int nfs4_proc_get_lease_time(struct nfs_client
*clp
, struct nfs_fsinfo
*fsinfo
)
7331 struct rpc_task
*task
;
7332 struct nfs4_get_lease_time_args args
;
7333 struct nfs4_get_lease_time_res res
= {
7334 .lr_fsinfo
= fsinfo
,
7336 struct nfs4_get_lease_time_data data
= {
7341 struct rpc_message msg
= {
7342 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GET_LEASE_TIME
],
7346 struct rpc_task_setup task_setup
= {
7347 .rpc_client
= clp
->cl_rpcclient
,
7348 .rpc_message
= &msg
,
7349 .callback_ops
= &nfs4_get_lease_time_ops
,
7350 .callback_data
= &data
,
7351 .flags
= RPC_TASK_TIMEOUT
,
7355 nfs4_init_sequence(&args
.la_seq_args
, &res
.lr_seq_res
, 0);
7356 nfs4_set_sequence_privileged(&args
.la_seq_args
);
7357 dprintk("--> %s\n", __func__
);
7358 task
= rpc_run_task(&task_setup
);
7361 status
= PTR_ERR(task
);
7363 status
= task
->tk_status
;
7366 dprintk("<-- %s return %d\n", __func__
, status
);
7372 * Initialize the values to be used by the client in CREATE_SESSION
7373 * If nfs4_init_session set the fore channel request and response sizes,
7376 * Set the back channel max_resp_sz_cached to zero to force the client to
7377 * always set csa_cachethis to FALSE because the current implementation
7378 * of the back channel DRC only supports caching the CB_SEQUENCE operation.
7380 static void nfs4_init_channel_attrs(struct nfs41_create_session_args
*args
,
7381 struct rpc_clnt
*clnt
)
7383 unsigned int max_rqst_sz
, max_resp_sz
;
7384 unsigned int max_bc_payload
= rpc_max_bc_payload(clnt
);
7386 max_rqst_sz
= NFS_MAX_FILE_IO_SIZE
+ nfs41_maxwrite_overhead
;
7387 max_resp_sz
= NFS_MAX_FILE_IO_SIZE
+ nfs41_maxread_overhead
;
7389 /* Fore channel attributes */
7390 args
->fc_attrs
.max_rqst_sz
= max_rqst_sz
;
7391 args
->fc_attrs
.max_resp_sz
= max_resp_sz
;
7392 args
->fc_attrs
.max_ops
= NFS4_MAX_OPS
;
7393 args
->fc_attrs
.max_reqs
= max_session_slots
;
7395 dprintk("%s: Fore Channel : max_rqst_sz=%u max_resp_sz=%u "
7396 "max_ops=%u max_reqs=%u\n",
7398 args
->fc_attrs
.max_rqst_sz
, args
->fc_attrs
.max_resp_sz
,
7399 args
->fc_attrs
.max_ops
, args
->fc_attrs
.max_reqs
);
7401 /* Back channel attributes */
7402 args
->bc_attrs
.max_rqst_sz
= max_bc_payload
;
7403 args
->bc_attrs
.max_resp_sz
= max_bc_payload
;
7404 args
->bc_attrs
.max_resp_sz_cached
= 0;
7405 args
->bc_attrs
.max_ops
= NFS4_MAX_BACK_CHANNEL_OPS
;
7406 args
->bc_attrs
.max_reqs
= NFS41_BC_MAX_CALLBACKS
;
7408 dprintk("%s: Back Channel : max_rqst_sz=%u max_resp_sz=%u "
7409 "max_resp_sz_cached=%u max_ops=%u max_reqs=%u\n",
7411 args
->bc_attrs
.max_rqst_sz
, args
->bc_attrs
.max_resp_sz
,
7412 args
->bc_attrs
.max_resp_sz_cached
, args
->bc_attrs
.max_ops
,
7413 args
->bc_attrs
.max_reqs
);
7416 static int nfs4_verify_fore_channel_attrs(struct nfs41_create_session_args
*args
,
7417 struct nfs41_create_session_res
*res
)
7419 struct nfs4_channel_attrs
*sent
= &args
->fc_attrs
;
7420 struct nfs4_channel_attrs
*rcvd
= &res
->fc_attrs
;
7422 if (rcvd
->max_resp_sz
> sent
->max_resp_sz
)
7425 * Our requested max_ops is the minimum we need; we're not
7426 * prepared to break up compounds into smaller pieces than that.
7427 * So, no point even trying to continue if the server won't
7430 if (rcvd
->max_ops
< sent
->max_ops
)
7432 if (rcvd
->max_reqs
== 0)
7434 if (rcvd
->max_reqs
> NFS4_MAX_SLOT_TABLE
)
7435 rcvd
->max_reqs
= NFS4_MAX_SLOT_TABLE
;
7439 static int nfs4_verify_back_channel_attrs(struct nfs41_create_session_args
*args
,
7440 struct nfs41_create_session_res
*res
)
7442 struct nfs4_channel_attrs
*sent
= &args
->bc_attrs
;
7443 struct nfs4_channel_attrs
*rcvd
= &res
->bc_attrs
;
7445 if (!(res
->flags
& SESSION4_BACK_CHAN
))
7447 if (rcvd
->max_rqst_sz
> sent
->max_rqst_sz
)
7449 if (rcvd
->max_resp_sz
< sent
->max_resp_sz
)
7451 if (rcvd
->max_resp_sz_cached
> sent
->max_resp_sz_cached
)
7453 /* These would render the backchannel useless: */
7454 if (rcvd
->max_ops
!= sent
->max_ops
)
7456 if (rcvd
->max_reqs
!= sent
->max_reqs
)
7462 static int nfs4_verify_channel_attrs(struct nfs41_create_session_args
*args
,
7463 struct nfs41_create_session_res
*res
)
7467 ret
= nfs4_verify_fore_channel_attrs(args
, res
);
7470 return nfs4_verify_back_channel_attrs(args
, res
);
7473 static void nfs4_update_session(struct nfs4_session
*session
,
7474 struct nfs41_create_session_res
*res
)
7476 nfs4_copy_sessionid(&session
->sess_id
, &res
->sessionid
);
7477 /* Mark client id and session as being confirmed */
7478 session
->clp
->cl_exchange_flags
|= EXCHGID4_FLAG_CONFIRMED_R
;
7479 set_bit(NFS4_SESSION_ESTABLISHED
, &session
->session_state
);
7480 session
->flags
= res
->flags
;
7481 memcpy(&session
->fc_attrs
, &res
->fc_attrs
, sizeof(session
->fc_attrs
));
7482 if (res
->flags
& SESSION4_BACK_CHAN
)
7483 memcpy(&session
->bc_attrs
, &res
->bc_attrs
,
7484 sizeof(session
->bc_attrs
));
7487 static int _nfs4_proc_create_session(struct nfs_client
*clp
,
7488 struct rpc_cred
*cred
)
7490 struct nfs4_session
*session
= clp
->cl_session
;
7491 struct nfs41_create_session_args args
= {
7493 .clientid
= clp
->cl_clientid
,
7494 .seqid
= clp
->cl_seqid
,
7495 .cb_program
= NFS4_CALLBACK
,
7497 struct nfs41_create_session_res res
;
7499 struct rpc_message msg
= {
7500 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CREATE_SESSION
],
7507 nfs4_init_channel_attrs(&args
, clp
->cl_rpcclient
);
7508 args
.flags
= (SESSION4_PERSIST
| SESSION4_BACK_CHAN
);
7510 status
= rpc_call_sync(session
->clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
7511 trace_nfs4_create_session(clp
, status
);
7514 /* Verify the session's negotiated channel_attrs values */
7515 status
= nfs4_verify_channel_attrs(&args
, &res
);
7516 /* Increment the clientid slot sequence id */
7517 if (clp
->cl_seqid
== res
.seqid
)
7521 nfs4_update_session(session
, &res
);
7528 * Issues a CREATE_SESSION operation to the server.
7529 * It is the responsibility of the caller to verify the session is
7530 * expired before calling this routine.
7532 int nfs4_proc_create_session(struct nfs_client
*clp
, struct rpc_cred
*cred
)
7536 struct nfs4_session
*session
= clp
->cl_session
;
7538 dprintk("--> %s clp=%p session=%p\n", __func__
, clp
, session
);
7540 status
= _nfs4_proc_create_session(clp
, cred
);
7544 /* Init or reset the session slot tables */
7545 status
= nfs4_setup_session_slot_tables(session
);
7546 dprintk("slot table setup returned %d\n", status
);
7550 ptr
= (unsigned *)&session
->sess_id
.data
[0];
7551 dprintk("%s client>seqid %d sessionid %u:%u:%u:%u\n", __func__
,
7552 clp
->cl_seqid
, ptr
[0], ptr
[1], ptr
[2], ptr
[3]);
7554 dprintk("<-- %s\n", __func__
);
7559 * Issue the over-the-wire RPC DESTROY_SESSION.
7560 * The caller must serialize access to this routine.
7562 int nfs4_proc_destroy_session(struct nfs4_session
*session
,
7563 struct rpc_cred
*cred
)
7565 struct rpc_message msg
= {
7566 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DESTROY_SESSION
],
7567 .rpc_argp
= session
,
7572 dprintk("--> nfs4_proc_destroy_session\n");
7574 /* session is still being setup */
7575 if (!test_and_clear_bit(NFS4_SESSION_ESTABLISHED
, &session
->session_state
))
7578 status
= rpc_call_sync(session
->clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
7579 trace_nfs4_destroy_session(session
->clp
, status
);
7582 dprintk("NFS: Got error %d from the server on DESTROY_SESSION. "
7583 "Session has been destroyed regardless...\n", status
);
7585 dprintk("<-- nfs4_proc_destroy_session\n");
7590 * Renew the cl_session lease.
7592 struct nfs4_sequence_data
{
7593 struct nfs_client
*clp
;
7594 struct nfs4_sequence_args args
;
7595 struct nfs4_sequence_res res
;
7598 static void nfs41_sequence_release(void *data
)
7600 struct nfs4_sequence_data
*calldata
= data
;
7601 struct nfs_client
*clp
= calldata
->clp
;
7603 if (atomic_read(&clp
->cl_count
) > 1)
7604 nfs4_schedule_state_renewal(clp
);
7605 nfs_put_client(clp
);
7609 static int nfs41_sequence_handle_errors(struct rpc_task
*task
, struct nfs_client
*clp
)
7611 switch(task
->tk_status
) {
7612 case -NFS4ERR_DELAY
:
7613 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
7616 nfs4_schedule_lease_recovery(clp
);
7621 static void nfs41_sequence_call_done(struct rpc_task
*task
, void *data
)
7623 struct nfs4_sequence_data
*calldata
= data
;
7624 struct nfs_client
*clp
= calldata
->clp
;
7626 if (!nfs41_sequence_done(task
, task
->tk_msg
.rpc_resp
))
7629 trace_nfs4_sequence(clp
, task
->tk_status
);
7630 if (task
->tk_status
< 0) {
7631 dprintk("%s ERROR %d\n", __func__
, task
->tk_status
);
7632 if (atomic_read(&clp
->cl_count
) == 1)
7635 if (nfs41_sequence_handle_errors(task
, clp
) == -EAGAIN
) {
7636 rpc_restart_call_prepare(task
);
7640 dprintk("%s rpc_cred %p\n", __func__
, task
->tk_msg
.rpc_cred
);
7642 dprintk("<-- %s\n", __func__
);
7645 static void nfs41_sequence_prepare(struct rpc_task
*task
, void *data
)
7647 struct nfs4_sequence_data
*calldata
= data
;
7648 struct nfs_client
*clp
= calldata
->clp
;
7649 struct nfs4_sequence_args
*args
;
7650 struct nfs4_sequence_res
*res
;
7652 args
= task
->tk_msg
.rpc_argp
;
7653 res
= task
->tk_msg
.rpc_resp
;
7655 nfs41_setup_sequence(clp
->cl_session
, args
, res
, task
);
7658 static const struct rpc_call_ops nfs41_sequence_ops
= {
7659 .rpc_call_done
= nfs41_sequence_call_done
,
7660 .rpc_call_prepare
= nfs41_sequence_prepare
,
7661 .rpc_release
= nfs41_sequence_release
,
7664 static struct rpc_task
*_nfs41_proc_sequence(struct nfs_client
*clp
,
7665 struct rpc_cred
*cred
,
7668 struct nfs4_sequence_data
*calldata
;
7669 struct rpc_message msg
= {
7670 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SEQUENCE
],
7673 struct rpc_task_setup task_setup_data
= {
7674 .rpc_client
= clp
->cl_rpcclient
,
7675 .rpc_message
= &msg
,
7676 .callback_ops
= &nfs41_sequence_ops
,
7677 .flags
= RPC_TASK_ASYNC
| RPC_TASK_TIMEOUT
,
7680 if (!atomic_inc_not_zero(&clp
->cl_count
))
7681 return ERR_PTR(-EIO
);
7682 calldata
= kzalloc(sizeof(*calldata
), GFP_NOFS
);
7683 if (calldata
== NULL
) {
7684 nfs_put_client(clp
);
7685 return ERR_PTR(-ENOMEM
);
7687 nfs4_init_sequence(&calldata
->args
, &calldata
->res
, 0);
7689 nfs4_set_sequence_privileged(&calldata
->args
);
7690 msg
.rpc_argp
= &calldata
->args
;
7691 msg
.rpc_resp
= &calldata
->res
;
7692 calldata
->clp
= clp
;
7693 task_setup_data
.callback_data
= calldata
;
7695 return rpc_run_task(&task_setup_data
);
7698 static int nfs41_proc_async_sequence(struct nfs_client
*clp
, struct rpc_cred
*cred
, unsigned renew_flags
)
7700 struct rpc_task
*task
;
7703 if ((renew_flags
& NFS4_RENEW_TIMEOUT
) == 0)
7705 task
= _nfs41_proc_sequence(clp
, cred
, false);
7707 ret
= PTR_ERR(task
);
7709 rpc_put_task_async(task
);
7710 dprintk("<-- %s status=%d\n", __func__
, ret
);
7714 static int nfs4_proc_sequence(struct nfs_client
*clp
, struct rpc_cred
*cred
)
7716 struct rpc_task
*task
;
7719 task
= _nfs41_proc_sequence(clp
, cred
, true);
7721 ret
= PTR_ERR(task
);
7724 ret
= rpc_wait_for_completion_task(task
);
7726 ret
= task
->tk_status
;
7729 dprintk("<-- %s status=%d\n", __func__
, ret
);
7733 struct nfs4_reclaim_complete_data
{
7734 struct nfs_client
*clp
;
7735 struct nfs41_reclaim_complete_args arg
;
7736 struct nfs41_reclaim_complete_res res
;
7739 static void nfs4_reclaim_complete_prepare(struct rpc_task
*task
, void *data
)
7741 struct nfs4_reclaim_complete_data
*calldata
= data
;
7743 nfs41_setup_sequence(calldata
->clp
->cl_session
,
7744 &calldata
->arg
.seq_args
,
7745 &calldata
->res
.seq_res
,
7749 static int nfs41_reclaim_complete_handle_errors(struct rpc_task
*task
, struct nfs_client
*clp
)
7751 switch(task
->tk_status
) {
7753 case -NFS4ERR_COMPLETE_ALREADY
:
7754 case -NFS4ERR_WRONG_CRED
: /* What to do here? */
7756 case -NFS4ERR_DELAY
:
7757 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
7759 case -NFS4ERR_RETRY_UNCACHED_REP
:
7762 nfs4_schedule_lease_recovery(clp
);
7767 static void nfs4_reclaim_complete_done(struct rpc_task
*task
, void *data
)
7769 struct nfs4_reclaim_complete_data
*calldata
= data
;
7770 struct nfs_client
*clp
= calldata
->clp
;
7771 struct nfs4_sequence_res
*res
= &calldata
->res
.seq_res
;
7773 dprintk("--> %s\n", __func__
);
7774 if (!nfs41_sequence_done(task
, res
))
7777 trace_nfs4_reclaim_complete(clp
, task
->tk_status
);
7778 if (nfs41_reclaim_complete_handle_errors(task
, clp
) == -EAGAIN
) {
7779 rpc_restart_call_prepare(task
);
7782 dprintk("<-- %s\n", __func__
);
7785 static void nfs4_free_reclaim_complete_data(void *data
)
7787 struct nfs4_reclaim_complete_data
*calldata
= data
;
7792 static const struct rpc_call_ops nfs4_reclaim_complete_call_ops
= {
7793 .rpc_call_prepare
= nfs4_reclaim_complete_prepare
,
7794 .rpc_call_done
= nfs4_reclaim_complete_done
,
7795 .rpc_release
= nfs4_free_reclaim_complete_data
,
7799 * Issue a global reclaim complete.
7801 static int nfs41_proc_reclaim_complete(struct nfs_client
*clp
,
7802 struct rpc_cred
*cred
)
7804 struct nfs4_reclaim_complete_data
*calldata
;
7805 struct rpc_task
*task
;
7806 struct rpc_message msg
= {
7807 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RECLAIM_COMPLETE
],
7810 struct rpc_task_setup task_setup_data
= {
7811 .rpc_client
= clp
->cl_rpcclient
,
7812 .rpc_message
= &msg
,
7813 .callback_ops
= &nfs4_reclaim_complete_call_ops
,
7814 .flags
= RPC_TASK_ASYNC
,
7816 int status
= -ENOMEM
;
7818 dprintk("--> %s\n", __func__
);
7819 calldata
= kzalloc(sizeof(*calldata
), GFP_NOFS
);
7820 if (calldata
== NULL
)
7822 calldata
->clp
= clp
;
7823 calldata
->arg
.one_fs
= 0;
7825 nfs4_init_sequence(&calldata
->arg
.seq_args
, &calldata
->res
.seq_res
, 0);
7826 nfs4_set_sequence_privileged(&calldata
->arg
.seq_args
);
7827 msg
.rpc_argp
= &calldata
->arg
;
7828 msg
.rpc_resp
= &calldata
->res
;
7829 task_setup_data
.callback_data
= calldata
;
7830 task
= rpc_run_task(&task_setup_data
);
7832 status
= PTR_ERR(task
);
7835 status
= nfs4_wait_for_completion_rpc_task(task
);
7837 status
= task
->tk_status
;
7841 dprintk("<-- %s status=%d\n", __func__
, status
);
7846 nfs4_layoutget_prepare(struct rpc_task
*task
, void *calldata
)
7848 struct nfs4_layoutget
*lgp
= calldata
;
7849 struct nfs_server
*server
= NFS_SERVER(lgp
->args
.inode
);
7850 struct nfs4_session
*session
= nfs4_get_session(server
);
7852 dprintk("--> %s\n", __func__
);
7853 nfs41_setup_sequence(session
, &lgp
->args
.seq_args
,
7854 &lgp
->res
.seq_res
, task
);
7855 dprintk("<-- %s\n", __func__
);
7858 static void nfs4_layoutget_done(struct rpc_task
*task
, void *calldata
)
7860 struct nfs4_layoutget
*lgp
= calldata
;
7862 dprintk("--> %s\n", __func__
);
7863 nfs41_sequence_done(task
, &lgp
->res
.seq_res
);
7864 dprintk("<-- %s\n", __func__
);
7868 nfs4_layoutget_handle_exception(struct rpc_task
*task
,
7869 struct nfs4_layoutget
*lgp
, struct nfs4_exception
*exception
)
7871 struct inode
*inode
= lgp
->args
.inode
;
7872 struct nfs_server
*server
= NFS_SERVER(inode
);
7873 struct pnfs_layout_hdr
*lo
;
7874 int status
= task
->tk_status
;
7876 dprintk("--> %s tk_status => %d\n", __func__
, -task
->tk_status
);
7883 * NFS4ERR_LAYOUTUNAVAILABLE means we are not supposed to use pnfs
7884 * on the file. set tk_status to -ENODATA to tell upper layer to
7887 case -NFS4ERR_LAYOUTUNAVAILABLE
:
7891 * NFS4ERR_BADLAYOUT means the MDS cannot return a layout of
7892 * length lgp->args.minlength != 0 (see RFC5661 section 18.43.3).
7894 case -NFS4ERR_BADLAYOUT
:
7895 status
= -EOVERFLOW
;
7898 * NFS4ERR_LAYOUTTRYLATER is a conflict with another client
7899 * (or clients) writing to the same RAID stripe except when
7900 * the minlength argument is 0 (see RFC5661 section 18.43.3).
7902 * Treat it like we would RECALLCONFLICT -- we retry for a little
7903 * while, and then eventually give up.
7905 case -NFS4ERR_LAYOUTTRYLATER
:
7906 if (lgp
->args
.minlength
== 0) {
7907 status
= -EOVERFLOW
;
7911 case -NFS4ERR_RECALLCONFLICT
:
7912 nfs4_handle_exception(server
, -NFS4ERR_RECALLCONFLICT
,
7914 status
= -ERECALLCONFLICT
;
7916 case -NFS4ERR_EXPIRED
:
7917 case -NFS4ERR_BAD_STATEID
:
7918 exception
->timeout
= 0;
7919 spin_lock(&inode
->i_lock
);
7920 if (nfs4_stateid_match(&lgp
->args
.stateid
,
7921 &lgp
->args
.ctx
->state
->stateid
)) {
7922 spin_unlock(&inode
->i_lock
);
7923 /* If the open stateid was bad, then recover it. */
7924 exception
->state
= lgp
->args
.ctx
->state
;
7927 lo
= NFS_I(inode
)->layout
;
7928 if (lo
&& nfs4_stateid_match(&lgp
->args
.stateid
,
7929 &lo
->plh_stateid
)) {
7933 * Mark the bad layout state as invalid, then retry
7934 * with the current stateid.
7936 set_bit(NFS_LAYOUT_INVALID_STID
, &lo
->plh_flags
);
7937 pnfs_mark_matching_lsegs_invalid(lo
, &head
, NULL
, 0);
7938 spin_unlock(&inode
->i_lock
);
7939 pnfs_free_lseg_list(&head
);
7941 spin_unlock(&inode
->i_lock
);
7946 status
= nfs4_handle_exception(server
, status
, exception
);
7947 if (exception
->retry
)
7950 dprintk("<-- %s\n", __func__
);
7954 static size_t max_response_pages(struct nfs_server
*server
)
7956 u32 max_resp_sz
= server
->nfs_client
->cl_session
->fc_attrs
.max_resp_sz
;
7957 return nfs_page_array_len(0, max_resp_sz
);
7960 static void nfs4_free_pages(struct page
**pages
, size_t size
)
7967 for (i
= 0; i
< size
; i
++) {
7970 __free_page(pages
[i
]);
7975 static struct page
**nfs4_alloc_pages(size_t size
, gfp_t gfp_flags
)
7977 struct page
**pages
;
7980 pages
= kcalloc(size
, sizeof(struct page
*), gfp_flags
);
7982 dprintk("%s: can't alloc array of %zu pages\n", __func__
, size
);
7986 for (i
= 0; i
< size
; i
++) {
7987 pages
[i
] = alloc_page(gfp_flags
);
7989 dprintk("%s: failed to allocate page\n", __func__
);
7990 nfs4_free_pages(pages
, size
);
7998 static void nfs4_layoutget_release(void *calldata
)
8000 struct nfs4_layoutget
*lgp
= calldata
;
8001 struct inode
*inode
= lgp
->args
.inode
;
8002 struct nfs_server
*server
= NFS_SERVER(inode
);
8003 size_t max_pages
= max_response_pages(server
);
8005 dprintk("--> %s\n", __func__
);
8006 nfs4_free_pages(lgp
->args
.layout
.pages
, max_pages
);
8007 pnfs_put_layout_hdr(NFS_I(inode
)->layout
);
8008 put_nfs_open_context(lgp
->args
.ctx
);
8010 dprintk("<-- %s\n", __func__
);
8013 static const struct rpc_call_ops nfs4_layoutget_call_ops
= {
8014 .rpc_call_prepare
= nfs4_layoutget_prepare
,
8015 .rpc_call_done
= nfs4_layoutget_done
,
8016 .rpc_release
= nfs4_layoutget_release
,
8019 struct pnfs_layout_segment
*
8020 nfs4_proc_layoutget(struct nfs4_layoutget
*lgp
, long *timeout
, gfp_t gfp_flags
)
8022 struct inode
*inode
= lgp
->args
.inode
;
8023 struct nfs_server
*server
= NFS_SERVER(inode
);
8024 size_t max_pages
= max_response_pages(server
);
8025 struct rpc_task
*task
;
8026 struct rpc_message msg
= {
8027 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LAYOUTGET
],
8028 .rpc_argp
= &lgp
->args
,
8029 .rpc_resp
= &lgp
->res
,
8030 .rpc_cred
= lgp
->cred
,
8032 struct rpc_task_setup task_setup_data
= {
8033 .rpc_client
= server
->client
,
8034 .rpc_message
= &msg
,
8035 .callback_ops
= &nfs4_layoutget_call_ops
,
8036 .callback_data
= lgp
,
8037 .flags
= RPC_TASK_ASYNC
,
8039 struct pnfs_layout_segment
*lseg
= NULL
;
8040 struct nfs4_exception exception
= { .timeout
= *timeout
};
8043 dprintk("--> %s\n", __func__
);
8045 /* nfs4_layoutget_release calls pnfs_put_layout_hdr */
8046 pnfs_get_layout_hdr(NFS_I(inode
)->layout
);
8048 lgp
->args
.layout
.pages
= nfs4_alloc_pages(max_pages
, gfp_flags
);
8049 if (!lgp
->args
.layout
.pages
) {
8050 nfs4_layoutget_release(lgp
);
8051 return ERR_PTR(-ENOMEM
);
8053 lgp
->args
.layout
.pglen
= max_pages
* PAGE_SIZE
;
8055 lgp
->res
.layoutp
= &lgp
->args
.layout
;
8056 lgp
->res
.seq_res
.sr_slot
= NULL
;
8057 nfs4_init_sequence(&lgp
->args
.seq_args
, &lgp
->res
.seq_res
, 0);
8059 task
= rpc_run_task(&task_setup_data
);
8061 return ERR_CAST(task
);
8062 status
= nfs4_wait_for_completion_rpc_task(task
);
8064 status
= nfs4_layoutget_handle_exception(task
, lgp
, &exception
);
8065 *timeout
= exception
.timeout
;
8068 trace_nfs4_layoutget(lgp
->args
.ctx
,
8074 /* if layoutp->len is 0, nfs4_layoutget_prepare called rpc_exit */
8075 if (status
== 0 && lgp
->res
.layoutp
->len
)
8076 lseg
= pnfs_layout_process(lgp
);
8078 dprintk("<-- %s status=%d\n", __func__
, status
);
8080 return ERR_PTR(status
);
8085 nfs4_layoutreturn_prepare(struct rpc_task
*task
, void *calldata
)
8087 struct nfs4_layoutreturn
*lrp
= calldata
;
8089 dprintk("--> %s\n", __func__
);
8090 nfs41_setup_sequence(lrp
->clp
->cl_session
,
8091 &lrp
->args
.seq_args
,
8096 static void nfs4_layoutreturn_done(struct rpc_task
*task
, void *calldata
)
8098 struct nfs4_layoutreturn
*lrp
= calldata
;
8099 struct nfs_server
*server
;
8101 dprintk("--> %s\n", __func__
);
8103 if (!nfs41_sequence_done(task
, &lrp
->res
.seq_res
))
8106 server
= NFS_SERVER(lrp
->args
.inode
);
8107 switch (task
->tk_status
) {
8109 task
->tk_status
= 0;
8112 case -NFS4ERR_DELAY
:
8113 if (nfs4_async_handle_error(task
, server
, NULL
, NULL
) != -EAGAIN
)
8115 rpc_restart_call_prepare(task
);
8118 dprintk("<-- %s\n", __func__
);
8121 static void nfs4_layoutreturn_release(void *calldata
)
8123 struct nfs4_layoutreturn
*lrp
= calldata
;
8124 struct pnfs_layout_hdr
*lo
= lrp
->args
.layout
;
8127 dprintk("--> %s\n", __func__
);
8128 spin_lock(&lo
->plh_inode
->i_lock
);
8129 pnfs_mark_matching_lsegs_invalid(lo
, &freeme
, &lrp
->args
.range
,
8130 be32_to_cpu(lrp
->args
.stateid
.seqid
));
8131 pnfs_mark_layout_returned_if_empty(lo
);
8132 if (lrp
->res
.lrs_present
)
8133 pnfs_set_layout_stateid(lo
, &lrp
->res
.stateid
, true);
8134 pnfs_clear_layoutreturn_waitbit(lo
);
8135 spin_unlock(&lo
->plh_inode
->i_lock
);
8136 pnfs_free_lseg_list(&freeme
);
8137 pnfs_put_layout_hdr(lrp
->args
.layout
);
8138 nfs_iput_and_deactive(lrp
->inode
);
8140 dprintk("<-- %s\n", __func__
);
8143 static const struct rpc_call_ops nfs4_layoutreturn_call_ops
= {
8144 .rpc_call_prepare
= nfs4_layoutreturn_prepare
,
8145 .rpc_call_done
= nfs4_layoutreturn_done
,
8146 .rpc_release
= nfs4_layoutreturn_release
,
8149 int nfs4_proc_layoutreturn(struct nfs4_layoutreturn
*lrp
, bool sync
)
8151 struct rpc_task
*task
;
8152 struct rpc_message msg
= {
8153 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LAYOUTRETURN
],
8154 .rpc_argp
= &lrp
->args
,
8155 .rpc_resp
= &lrp
->res
,
8156 .rpc_cred
= lrp
->cred
,
8158 struct rpc_task_setup task_setup_data
= {
8159 .rpc_client
= NFS_SERVER(lrp
->args
.inode
)->client
,
8160 .rpc_message
= &msg
,
8161 .callback_ops
= &nfs4_layoutreturn_call_ops
,
8162 .callback_data
= lrp
,
8166 nfs4_state_protect(NFS_SERVER(lrp
->args
.inode
)->nfs_client
,
8167 NFS_SP4_MACH_CRED_PNFS_CLEANUP
,
8168 &task_setup_data
.rpc_client
, &msg
);
8170 dprintk("--> %s\n", __func__
);
8172 lrp
->inode
= nfs_igrab_and_active(lrp
->args
.inode
);
8174 nfs4_layoutreturn_release(lrp
);
8177 task_setup_data
.flags
|= RPC_TASK_ASYNC
;
8179 nfs4_init_sequence(&lrp
->args
.seq_args
, &lrp
->res
.seq_res
, 1);
8180 task
= rpc_run_task(&task_setup_data
);
8182 return PTR_ERR(task
);
8184 status
= task
->tk_status
;
8185 trace_nfs4_layoutreturn(lrp
->args
.inode
, &lrp
->args
.stateid
, status
);
8186 dprintk("<-- %s status=%d\n", __func__
, status
);
8192 _nfs4_proc_getdeviceinfo(struct nfs_server
*server
,
8193 struct pnfs_device
*pdev
,
8194 struct rpc_cred
*cred
)
8196 struct nfs4_getdeviceinfo_args args
= {
8198 .notify_types
= NOTIFY_DEVICEID4_CHANGE
|
8199 NOTIFY_DEVICEID4_DELETE
,
8201 struct nfs4_getdeviceinfo_res res
= {
8204 struct rpc_message msg
= {
8205 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETDEVICEINFO
],
8212 dprintk("--> %s\n", __func__
);
8213 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
8214 if (res
.notification
& ~args
.notify_types
)
8215 dprintk("%s: unsupported notification\n", __func__
);
8216 if (res
.notification
!= args
.notify_types
)
8219 dprintk("<-- %s status=%d\n", __func__
, status
);
8224 int nfs4_proc_getdeviceinfo(struct nfs_server
*server
,
8225 struct pnfs_device
*pdev
,
8226 struct rpc_cred
*cred
)
8228 struct nfs4_exception exception
= { };
8232 err
= nfs4_handle_exception(server
,
8233 _nfs4_proc_getdeviceinfo(server
, pdev
, cred
),
8235 } while (exception
.retry
);
8238 EXPORT_SYMBOL_GPL(nfs4_proc_getdeviceinfo
);
8240 static void nfs4_layoutcommit_prepare(struct rpc_task
*task
, void *calldata
)
8242 struct nfs4_layoutcommit_data
*data
= calldata
;
8243 struct nfs_server
*server
= NFS_SERVER(data
->args
.inode
);
8244 struct nfs4_session
*session
= nfs4_get_session(server
);
8246 nfs41_setup_sequence(session
,
8247 &data
->args
.seq_args
,
8253 nfs4_layoutcommit_done(struct rpc_task
*task
, void *calldata
)
8255 struct nfs4_layoutcommit_data
*data
= calldata
;
8256 struct nfs_server
*server
= NFS_SERVER(data
->args
.inode
);
8258 if (!nfs41_sequence_done(task
, &data
->res
.seq_res
))
8261 switch (task
->tk_status
) { /* Just ignore these failures */
8262 case -NFS4ERR_DELEG_REVOKED
: /* layout was recalled */
8263 case -NFS4ERR_BADIOMODE
: /* no IOMODE_RW layout for range */
8264 case -NFS4ERR_BADLAYOUT
: /* no layout */
8265 case -NFS4ERR_GRACE
: /* loca_recalim always false */
8266 task
->tk_status
= 0;
8270 if (nfs4_async_handle_error(task
, server
, NULL
, NULL
) == -EAGAIN
) {
8271 rpc_restart_call_prepare(task
);
8277 static void nfs4_layoutcommit_release(void *calldata
)
8279 struct nfs4_layoutcommit_data
*data
= calldata
;
8281 pnfs_cleanup_layoutcommit(data
);
8282 nfs_post_op_update_inode_force_wcc(data
->args
.inode
,
8284 put_rpccred(data
->cred
);
8285 nfs_iput_and_deactive(data
->inode
);
8289 static const struct rpc_call_ops nfs4_layoutcommit_ops
= {
8290 .rpc_call_prepare
= nfs4_layoutcommit_prepare
,
8291 .rpc_call_done
= nfs4_layoutcommit_done
,
8292 .rpc_release
= nfs4_layoutcommit_release
,
8296 nfs4_proc_layoutcommit(struct nfs4_layoutcommit_data
*data
, bool sync
)
8298 struct rpc_message msg
= {
8299 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LAYOUTCOMMIT
],
8300 .rpc_argp
= &data
->args
,
8301 .rpc_resp
= &data
->res
,
8302 .rpc_cred
= data
->cred
,
8304 struct rpc_task_setup task_setup_data
= {
8305 .task
= &data
->task
,
8306 .rpc_client
= NFS_CLIENT(data
->args
.inode
),
8307 .rpc_message
= &msg
,
8308 .callback_ops
= &nfs4_layoutcommit_ops
,
8309 .callback_data
= data
,
8311 struct rpc_task
*task
;
8314 dprintk("NFS: initiating layoutcommit call. sync %d "
8315 "lbw: %llu inode %lu\n", sync
,
8316 data
->args
.lastbytewritten
,
8317 data
->args
.inode
->i_ino
);
8320 data
->inode
= nfs_igrab_and_active(data
->args
.inode
);
8321 if (data
->inode
== NULL
) {
8322 nfs4_layoutcommit_release(data
);
8325 task_setup_data
.flags
= RPC_TASK_ASYNC
;
8327 nfs4_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
8328 task
= rpc_run_task(&task_setup_data
);
8330 return PTR_ERR(task
);
8332 status
= task
->tk_status
;
8333 trace_nfs4_layoutcommit(data
->args
.inode
, &data
->args
.stateid
, status
);
8334 dprintk("%s: status %d\n", __func__
, status
);
8340 * Use the state managment nfs_client cl_rpcclient, which uses krb5i (if
8341 * possible) as per RFC3530bis and RFC5661 Security Considerations sections
8344 _nfs41_proc_secinfo_no_name(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
8345 struct nfs_fsinfo
*info
,
8346 struct nfs4_secinfo_flavors
*flavors
, bool use_integrity
)
8348 struct nfs41_secinfo_no_name_args args
= {
8349 .style
= SECINFO_STYLE_CURRENT_FH
,
8351 struct nfs4_secinfo_res res
= {
8354 struct rpc_message msg
= {
8355 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SECINFO_NO_NAME
],
8359 struct rpc_clnt
*clnt
= server
->client
;
8360 struct rpc_cred
*cred
= NULL
;
8363 if (use_integrity
) {
8364 clnt
= server
->nfs_client
->cl_rpcclient
;
8365 cred
= nfs4_get_clid_cred(server
->nfs_client
);
8366 msg
.rpc_cred
= cred
;
8369 dprintk("--> %s\n", __func__
);
8370 status
= nfs4_call_sync(clnt
, server
, &msg
, &args
.seq_args
,
8372 dprintk("<-- %s status=%d\n", __func__
, status
);
8381 nfs41_proc_secinfo_no_name(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
8382 struct nfs_fsinfo
*info
, struct nfs4_secinfo_flavors
*flavors
)
8384 struct nfs4_exception exception
= { };
8387 /* first try using integrity protection */
8388 err
= -NFS4ERR_WRONGSEC
;
8390 /* try to use integrity protection with machine cred */
8391 if (_nfs4_is_integrity_protected(server
->nfs_client
))
8392 err
= _nfs41_proc_secinfo_no_name(server
, fhandle
, info
,
8396 * if unable to use integrity protection, or SECINFO with
8397 * integrity protection returns NFS4ERR_WRONGSEC (which is
8398 * disallowed by spec, but exists in deployed servers) use
8399 * the current filesystem's rpc_client and the user cred.
8401 if (err
== -NFS4ERR_WRONGSEC
)
8402 err
= _nfs41_proc_secinfo_no_name(server
, fhandle
, info
,
8407 case -NFS4ERR_WRONGSEC
:
8411 err
= nfs4_handle_exception(server
, err
, &exception
);
8413 } while (exception
.retry
);
8419 nfs41_find_root_sec(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
8420 struct nfs_fsinfo
*info
)
8424 rpc_authflavor_t flavor
= RPC_AUTH_MAXFLAVOR
;
8425 struct nfs4_secinfo_flavors
*flavors
;
8426 struct nfs4_secinfo4
*secinfo
;
8429 page
= alloc_page(GFP_KERNEL
);
8435 flavors
= page_address(page
);
8436 err
= nfs41_proc_secinfo_no_name(server
, fhandle
, info
, flavors
);
8439 * Fall back on "guess and check" method if
8440 * the server doesn't support SECINFO_NO_NAME
8442 if (err
== -NFS4ERR_WRONGSEC
|| err
== -ENOTSUPP
) {
8443 err
= nfs4_find_root_sec(server
, fhandle
, info
);
8449 for (i
= 0; i
< flavors
->num_flavors
; i
++) {
8450 secinfo
= &flavors
->flavors
[i
];
8452 switch (secinfo
->flavor
) {
8456 flavor
= rpcauth_get_pseudoflavor(secinfo
->flavor
,
8457 &secinfo
->flavor_info
);
8460 flavor
= RPC_AUTH_MAXFLAVOR
;
8464 if (!nfs_auth_info_match(&server
->auth_info
, flavor
))
8465 flavor
= RPC_AUTH_MAXFLAVOR
;
8467 if (flavor
!= RPC_AUTH_MAXFLAVOR
) {
8468 err
= nfs4_lookup_root_sec(server
, fhandle
,
8475 if (flavor
== RPC_AUTH_MAXFLAVOR
)
8486 static int _nfs41_test_stateid(struct nfs_server
*server
,
8487 nfs4_stateid
*stateid
,
8488 struct rpc_cred
*cred
)
8491 struct nfs41_test_stateid_args args
= {
8494 struct nfs41_test_stateid_res res
;
8495 struct rpc_message msg
= {
8496 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_TEST_STATEID
],
8501 struct rpc_clnt
*rpc_client
= server
->client
;
8503 nfs4_state_protect(server
->nfs_client
, NFS_SP4_MACH_CRED_STATEID
,
8506 dprintk("NFS call test_stateid %p\n", stateid
);
8507 nfs4_init_sequence(&args
.seq_args
, &res
.seq_res
, 0);
8508 nfs4_set_sequence_privileged(&args
.seq_args
);
8509 status
= nfs4_call_sync_sequence(rpc_client
, server
, &msg
,
8510 &args
.seq_args
, &res
.seq_res
);
8511 if (status
!= NFS_OK
) {
8512 dprintk("NFS reply test_stateid: failed, %d\n", status
);
8515 dprintk("NFS reply test_stateid: succeeded, %d\n", -res
.status
);
8520 * nfs41_test_stateid - perform a TEST_STATEID operation
8522 * @server: server / transport on which to perform the operation
8523 * @stateid: state ID to test
8526 * Returns NFS_OK if the server recognizes that "stateid" is valid.
8527 * Otherwise a negative NFS4ERR value is returned if the operation
8528 * failed or the state ID is not currently valid.
8530 static int nfs41_test_stateid(struct nfs_server
*server
,
8531 nfs4_stateid
*stateid
,
8532 struct rpc_cred
*cred
)
8534 struct nfs4_exception exception
= { };
8537 err
= _nfs41_test_stateid(server
, stateid
, cred
);
8538 if (err
!= -NFS4ERR_DELAY
)
8540 nfs4_handle_exception(server
, err
, &exception
);
8541 } while (exception
.retry
);
8545 struct nfs_free_stateid_data
{
8546 struct nfs_server
*server
;
8547 struct nfs41_free_stateid_args args
;
8548 struct nfs41_free_stateid_res res
;
8551 static void nfs41_free_stateid_prepare(struct rpc_task
*task
, void *calldata
)
8553 struct nfs_free_stateid_data
*data
= calldata
;
8554 nfs41_setup_sequence(nfs4_get_session(data
->server
),
8555 &data
->args
.seq_args
,
8560 static void nfs41_free_stateid_done(struct rpc_task
*task
, void *calldata
)
8562 struct nfs_free_stateid_data
*data
= calldata
;
8564 nfs41_sequence_done(task
, &data
->res
.seq_res
);
8566 switch (task
->tk_status
) {
8567 case -NFS4ERR_DELAY
:
8568 if (nfs4_async_handle_error(task
, data
->server
, NULL
, NULL
) == -EAGAIN
)
8569 rpc_restart_call_prepare(task
);
8573 static void nfs41_free_stateid_release(void *calldata
)
8578 static const struct rpc_call_ops nfs41_free_stateid_ops
= {
8579 .rpc_call_prepare
= nfs41_free_stateid_prepare
,
8580 .rpc_call_done
= nfs41_free_stateid_done
,
8581 .rpc_release
= nfs41_free_stateid_release
,
8584 static struct rpc_task
*_nfs41_free_stateid(struct nfs_server
*server
,
8585 nfs4_stateid
*stateid
,
8586 struct rpc_cred
*cred
,
8589 struct rpc_message msg
= {
8590 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FREE_STATEID
],
8593 struct rpc_task_setup task_setup
= {
8594 .rpc_client
= server
->client
,
8595 .rpc_message
= &msg
,
8596 .callback_ops
= &nfs41_free_stateid_ops
,
8597 .flags
= RPC_TASK_ASYNC
,
8599 struct nfs_free_stateid_data
*data
;
8601 nfs4_state_protect(server
->nfs_client
, NFS_SP4_MACH_CRED_STATEID
,
8602 &task_setup
.rpc_client
, &msg
);
8604 dprintk("NFS call free_stateid %p\n", stateid
);
8605 data
= kmalloc(sizeof(*data
), GFP_NOFS
);
8607 return ERR_PTR(-ENOMEM
);
8608 data
->server
= server
;
8609 nfs4_stateid_copy(&data
->args
.stateid
, stateid
);
8611 task_setup
.callback_data
= data
;
8613 msg
.rpc_argp
= &data
->args
;
8614 msg
.rpc_resp
= &data
->res
;
8615 nfs4_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 0);
8617 nfs4_set_sequence_privileged(&data
->args
.seq_args
);
8619 return rpc_run_task(&task_setup
);
8623 * nfs41_free_stateid - perform a FREE_STATEID operation
8625 * @server: server / transport on which to perform the operation
8626 * @stateid: state ID to release
8629 * Returns NFS_OK if the server freed "stateid". Otherwise a
8630 * negative NFS4ERR value is returned.
8632 static int nfs41_free_stateid(struct nfs_server
*server
,
8633 nfs4_stateid
*stateid
,
8634 struct rpc_cred
*cred
)
8636 struct rpc_task
*task
;
8639 task
= _nfs41_free_stateid(server
, stateid
, cred
, true);
8641 return PTR_ERR(task
);
8642 ret
= rpc_wait_for_completion_task(task
);
8644 ret
= task
->tk_status
;
8650 nfs41_free_lock_state(struct nfs_server
*server
, struct nfs4_lock_state
*lsp
)
8652 struct rpc_task
*task
;
8653 struct rpc_cred
*cred
= lsp
->ls_state
->owner
->so_cred
;
8655 task
= _nfs41_free_stateid(server
, &lsp
->ls_stateid
, cred
, false);
8656 nfs4_free_lock_state(server
, lsp
);
8662 static bool nfs41_match_stateid(const nfs4_stateid
*s1
,
8663 const nfs4_stateid
*s2
)
8665 if (s1
->type
!= s2
->type
)
8668 if (memcmp(s1
->other
, s2
->other
, sizeof(s1
->other
)) != 0)
8671 if (s1
->seqid
== s2
->seqid
)
8673 if (s1
->seqid
== 0 || s2
->seqid
== 0)
8679 #endif /* CONFIG_NFS_V4_1 */
8681 static bool nfs4_match_stateid(const nfs4_stateid
*s1
,
8682 const nfs4_stateid
*s2
)
8684 return nfs4_stateid_match(s1
, s2
);
8688 static const struct nfs4_state_recovery_ops nfs40_reboot_recovery_ops
= {
8689 .owner_flag_bit
= NFS_OWNER_RECLAIM_REBOOT
,
8690 .state_flag_bit
= NFS_STATE_RECLAIM_REBOOT
,
8691 .recover_open
= nfs4_open_reclaim
,
8692 .recover_lock
= nfs4_lock_reclaim
,
8693 .establish_clid
= nfs4_init_clientid
,
8694 .detect_trunking
= nfs40_discover_server_trunking
,
8697 #if defined(CONFIG_NFS_V4_1)
8698 static const struct nfs4_state_recovery_ops nfs41_reboot_recovery_ops
= {
8699 .owner_flag_bit
= NFS_OWNER_RECLAIM_REBOOT
,
8700 .state_flag_bit
= NFS_STATE_RECLAIM_REBOOT
,
8701 .recover_open
= nfs4_open_reclaim
,
8702 .recover_lock
= nfs4_lock_reclaim
,
8703 .establish_clid
= nfs41_init_clientid
,
8704 .reclaim_complete
= nfs41_proc_reclaim_complete
,
8705 .detect_trunking
= nfs41_discover_server_trunking
,
8707 #endif /* CONFIG_NFS_V4_1 */
8709 static const struct nfs4_state_recovery_ops nfs40_nograce_recovery_ops
= {
8710 .owner_flag_bit
= NFS_OWNER_RECLAIM_NOGRACE
,
8711 .state_flag_bit
= NFS_STATE_RECLAIM_NOGRACE
,
8712 .recover_open
= nfs40_open_expired
,
8713 .recover_lock
= nfs4_lock_expired
,
8714 .establish_clid
= nfs4_init_clientid
,
8717 #if defined(CONFIG_NFS_V4_1)
8718 static const struct nfs4_state_recovery_ops nfs41_nograce_recovery_ops
= {
8719 .owner_flag_bit
= NFS_OWNER_RECLAIM_NOGRACE
,
8720 .state_flag_bit
= NFS_STATE_RECLAIM_NOGRACE
,
8721 .recover_open
= nfs41_open_expired
,
8722 .recover_lock
= nfs41_lock_expired
,
8723 .establish_clid
= nfs41_init_clientid
,
8725 #endif /* CONFIG_NFS_V4_1 */
8727 static const struct nfs4_state_maintenance_ops nfs40_state_renewal_ops
= {
8728 .sched_state_renewal
= nfs4_proc_async_renew
,
8729 .get_state_renewal_cred_locked
= nfs4_get_renew_cred_locked
,
8730 .renew_lease
= nfs4_proc_renew
,
8733 #if defined(CONFIG_NFS_V4_1)
8734 static const struct nfs4_state_maintenance_ops nfs41_state_renewal_ops
= {
8735 .sched_state_renewal
= nfs41_proc_async_sequence
,
8736 .get_state_renewal_cred_locked
= nfs4_get_machine_cred_locked
,
8737 .renew_lease
= nfs4_proc_sequence
,
8741 static const struct nfs4_mig_recovery_ops nfs40_mig_recovery_ops
= {
8742 .get_locations
= _nfs40_proc_get_locations
,
8743 .fsid_present
= _nfs40_proc_fsid_present
,
8746 #if defined(CONFIG_NFS_V4_1)
8747 static const struct nfs4_mig_recovery_ops nfs41_mig_recovery_ops
= {
8748 .get_locations
= _nfs41_proc_get_locations
,
8749 .fsid_present
= _nfs41_proc_fsid_present
,
8751 #endif /* CONFIG_NFS_V4_1 */
8753 static const struct nfs4_minor_version_ops nfs_v4_0_minor_ops
= {
8755 .init_caps
= NFS_CAP_READDIRPLUS
8756 | NFS_CAP_ATOMIC_OPEN
8757 | NFS_CAP_POSIX_LOCK
,
8758 .init_client
= nfs40_init_client
,
8759 .shutdown_client
= nfs40_shutdown_client
,
8760 .match_stateid
= nfs4_match_stateid
,
8761 .find_root_sec
= nfs4_find_root_sec
,
8762 .free_lock_state
= nfs4_release_lockowner
,
8763 .alloc_seqid
= nfs_alloc_seqid
,
8764 .call_sync_ops
= &nfs40_call_sync_ops
,
8765 .reboot_recovery_ops
= &nfs40_reboot_recovery_ops
,
8766 .nograce_recovery_ops
= &nfs40_nograce_recovery_ops
,
8767 .state_renewal_ops
= &nfs40_state_renewal_ops
,
8768 .mig_recovery_ops
= &nfs40_mig_recovery_ops
,
8771 #if defined(CONFIG_NFS_V4_1)
8772 static struct nfs_seqid
*
8773 nfs_alloc_no_seqid(struct nfs_seqid_counter
*arg1
, gfp_t arg2
)
8778 static const struct nfs4_minor_version_ops nfs_v4_1_minor_ops
= {
8780 .init_caps
= NFS_CAP_READDIRPLUS
8781 | NFS_CAP_ATOMIC_OPEN
8782 | NFS_CAP_POSIX_LOCK
8783 | NFS_CAP_STATEID_NFSV41
8784 | NFS_CAP_ATOMIC_OPEN_V1
,
8785 .init_client
= nfs41_init_client
,
8786 .shutdown_client
= nfs41_shutdown_client
,
8787 .match_stateid
= nfs41_match_stateid
,
8788 .find_root_sec
= nfs41_find_root_sec
,
8789 .free_lock_state
= nfs41_free_lock_state
,
8790 .alloc_seqid
= nfs_alloc_no_seqid
,
8791 .call_sync_ops
= &nfs41_call_sync_ops
,
8792 .reboot_recovery_ops
= &nfs41_reboot_recovery_ops
,
8793 .nograce_recovery_ops
= &nfs41_nograce_recovery_ops
,
8794 .state_renewal_ops
= &nfs41_state_renewal_ops
,
8795 .mig_recovery_ops
= &nfs41_mig_recovery_ops
,
8799 #if defined(CONFIG_NFS_V4_2)
8800 static const struct nfs4_minor_version_ops nfs_v4_2_minor_ops
= {
8802 .init_caps
= NFS_CAP_READDIRPLUS
8803 | NFS_CAP_ATOMIC_OPEN
8804 | NFS_CAP_POSIX_LOCK
8805 | NFS_CAP_STATEID_NFSV41
8806 | NFS_CAP_ATOMIC_OPEN_V1
8809 | NFS_CAP_DEALLOCATE
8811 | NFS_CAP_LAYOUTSTATS
8813 .init_client
= nfs41_init_client
,
8814 .shutdown_client
= nfs41_shutdown_client
,
8815 .match_stateid
= nfs41_match_stateid
,
8816 .find_root_sec
= nfs41_find_root_sec
,
8817 .free_lock_state
= nfs41_free_lock_state
,
8818 .call_sync_ops
= &nfs41_call_sync_ops
,
8819 .alloc_seqid
= nfs_alloc_no_seqid
,
8820 .reboot_recovery_ops
= &nfs41_reboot_recovery_ops
,
8821 .nograce_recovery_ops
= &nfs41_nograce_recovery_ops
,
8822 .state_renewal_ops
= &nfs41_state_renewal_ops
,
8823 .mig_recovery_ops
= &nfs41_mig_recovery_ops
,
8827 const struct nfs4_minor_version_ops
*nfs_v4_minor_ops
[] = {
8828 [0] = &nfs_v4_0_minor_ops
,
8829 #if defined(CONFIG_NFS_V4_1)
8830 [1] = &nfs_v4_1_minor_ops
,
8832 #if defined(CONFIG_NFS_V4_2)
8833 [2] = &nfs_v4_2_minor_ops
,
8837 ssize_t
nfs4_listxattr(struct dentry
*dentry
, char *list
, size_t size
)
8839 ssize_t error
, error2
;
8841 error
= generic_listxattr(dentry
, list
, size
);
8849 error2
= nfs4_listxattr_nfs4_label(d_inode(dentry
), list
, size
);
8852 return error
+ error2
;
8855 static const struct inode_operations nfs4_dir_inode_operations
= {
8856 .create
= nfs_create
,
8857 .lookup
= nfs_lookup
,
8858 .atomic_open
= nfs_atomic_open
,
8860 .unlink
= nfs_unlink
,
8861 .symlink
= nfs_symlink
,
8865 .rename
= nfs_rename
,
8866 .permission
= nfs_permission
,
8867 .getattr
= nfs_getattr
,
8868 .setattr
= nfs_setattr
,
8869 .getxattr
= generic_getxattr
,
8870 .setxattr
= generic_setxattr
,
8871 .listxattr
= nfs4_listxattr
,
8872 .removexattr
= generic_removexattr
,
8875 static const struct inode_operations nfs4_file_inode_operations
= {
8876 .permission
= nfs_permission
,
8877 .getattr
= nfs_getattr
,
8878 .setattr
= nfs_setattr
,
8879 .getxattr
= generic_getxattr
,
8880 .setxattr
= generic_setxattr
,
8881 .listxattr
= nfs4_listxattr
,
8882 .removexattr
= generic_removexattr
,
8885 const struct nfs_rpc_ops nfs_v4_clientops
= {
8886 .version
= 4, /* protocol version */
8887 .dentry_ops
= &nfs4_dentry_operations
,
8888 .dir_inode_ops
= &nfs4_dir_inode_operations
,
8889 .file_inode_ops
= &nfs4_file_inode_operations
,
8890 .file_ops
= &nfs4_file_operations
,
8891 .getroot
= nfs4_proc_get_root
,
8892 .submount
= nfs4_submount
,
8893 .try_mount
= nfs4_try_mount
,
8894 .getattr
= nfs4_proc_getattr
,
8895 .setattr
= nfs4_proc_setattr
,
8896 .lookup
= nfs4_proc_lookup
,
8897 .access
= nfs4_proc_access
,
8898 .readlink
= nfs4_proc_readlink
,
8899 .create
= nfs4_proc_create
,
8900 .remove
= nfs4_proc_remove
,
8901 .unlink_setup
= nfs4_proc_unlink_setup
,
8902 .unlink_rpc_prepare
= nfs4_proc_unlink_rpc_prepare
,
8903 .unlink_done
= nfs4_proc_unlink_done
,
8904 .rename_setup
= nfs4_proc_rename_setup
,
8905 .rename_rpc_prepare
= nfs4_proc_rename_rpc_prepare
,
8906 .rename_done
= nfs4_proc_rename_done
,
8907 .link
= nfs4_proc_link
,
8908 .symlink
= nfs4_proc_symlink
,
8909 .mkdir
= nfs4_proc_mkdir
,
8910 .rmdir
= nfs4_proc_remove
,
8911 .readdir
= nfs4_proc_readdir
,
8912 .mknod
= nfs4_proc_mknod
,
8913 .statfs
= nfs4_proc_statfs
,
8914 .fsinfo
= nfs4_proc_fsinfo
,
8915 .pathconf
= nfs4_proc_pathconf
,
8916 .set_capabilities
= nfs4_server_capabilities
,
8917 .decode_dirent
= nfs4_decode_dirent
,
8918 .pgio_rpc_prepare
= nfs4_proc_pgio_rpc_prepare
,
8919 .read_setup
= nfs4_proc_read_setup
,
8920 .read_done
= nfs4_read_done
,
8921 .write_setup
= nfs4_proc_write_setup
,
8922 .write_done
= nfs4_write_done
,
8923 .commit_setup
= nfs4_proc_commit_setup
,
8924 .commit_rpc_prepare
= nfs4_proc_commit_rpc_prepare
,
8925 .commit_done
= nfs4_commit_done
,
8926 .lock
= nfs4_proc_lock
,
8927 .clear_acl_cache
= nfs4_zap_acl_attr
,
8928 .close_context
= nfs4_close_context
,
8929 .open_context
= nfs4_atomic_open
,
8930 .have_delegation
= nfs4_have_delegation
,
8931 .return_delegation
= nfs4_inode_return_delegation
,
8932 .alloc_client
= nfs4_alloc_client
,
8933 .init_client
= nfs4_init_client
,
8934 .free_client
= nfs4_free_client
,
8935 .create_server
= nfs4_create_server
,
8936 .clone_server
= nfs_clone_server
,
8939 static const struct xattr_handler nfs4_xattr_nfs4_acl_handler
= {
8940 .name
= XATTR_NAME_NFSV4_ACL
,
8941 .list
= nfs4_xattr_list_nfs4_acl
,
8942 .get
= nfs4_xattr_get_nfs4_acl
,
8943 .set
= nfs4_xattr_set_nfs4_acl
,
8946 const struct xattr_handler
*nfs4_xattr_handlers
[] = {
8947 &nfs4_xattr_nfs4_acl_handler
,
8948 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
8949 &nfs4_xattr_nfs4_label_handler
,