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/string.h>
42 #include <linux/ratelimit.h>
43 #include <linux/printk.h>
44 #include <linux/slab.h>
45 #include <linux/sunrpc/clnt.h>
46 #include <linux/nfs.h>
47 #include <linux/nfs4.h>
48 #include <linux/nfs_fs.h>
49 #include <linux/nfs_page.h>
50 #include <linux/nfs_mount.h>
51 #include <linux/namei.h>
52 #include <linux/mount.h>
53 #include <linux/module.h>
54 #include <linux/nfs_idmap.h>
55 #include <linux/xattr.h>
56 #include <linux/utsname.h>
57 #include <linux/freezer.h>
60 #include "delegation.h"
66 #include "nfs4session.h"
69 #include "nfs4trace.h"
71 #define NFSDBG_FACILITY NFSDBG_PROC
73 #define NFS4_POLL_RETRY_MIN (HZ/10)
74 #define NFS4_POLL_RETRY_MAX (15*HZ)
77 static int _nfs4_proc_open(struct nfs4_opendata
*data
);
78 static int _nfs4_recover_proc_open(struct nfs4_opendata
*data
);
79 static int nfs4_do_fsinfo(struct nfs_server
*, struct nfs_fh
*, struct nfs_fsinfo
*);
80 static int nfs4_async_handle_error(struct rpc_task
*, const struct nfs_server
*, struct nfs4_state
*);
81 static void nfs_fixup_referral_attributes(struct nfs_fattr
*fattr
);
82 static int nfs4_proc_getattr(struct nfs_server
*, struct nfs_fh
*, struct nfs_fattr
*, struct nfs4_label
*label
);
83 static int _nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
, struct nfs4_label
*label
);
84 static int nfs4_do_setattr(struct inode
*inode
, struct rpc_cred
*cred
,
85 struct nfs_fattr
*fattr
, struct iattr
*sattr
,
86 struct nfs4_state
*state
, struct nfs4_label
*ilabel
,
87 struct nfs4_label
*olabel
);
88 #ifdef CONFIG_NFS_V4_1
89 static int nfs41_test_stateid(struct nfs_server
*, nfs4_stateid
*,
91 static int nfs41_free_stateid(struct nfs_server
*, nfs4_stateid
*,
95 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
96 static inline struct nfs4_label
*
97 nfs4_label_init_security(struct inode
*dir
, struct dentry
*dentry
,
98 struct iattr
*sattr
, struct nfs4_label
*label
)
105 if (nfs_server_capable(dir
, NFS_CAP_SECURITY_LABEL
) == 0)
108 if (NFS_SERVER(dir
)->nfs_client
->cl_minorversion
< 2)
111 err
= security_dentry_init_security(dentry
, sattr
->ia_mode
,
112 &dentry
->d_name
, (void **)&label
->label
, &label
->len
);
119 nfs4_label_release_security(struct nfs4_label
*label
)
122 security_release_secctx(label
->label
, label
->len
);
124 static inline u32
*nfs4_bitmask(struct nfs_server
*server
, struct nfs4_label
*label
)
127 return server
->attr_bitmask
;
129 return server
->attr_bitmask_nl
;
132 static inline struct nfs4_label
*
133 nfs4_label_init_security(struct inode
*dir
, struct dentry
*dentry
,
134 struct iattr
*sattr
, struct nfs4_label
*l
)
137 nfs4_label_release_security(struct nfs4_label
*label
)
140 nfs4_bitmask(struct nfs_server
*server
, struct nfs4_label
*label
)
141 { return server
->attr_bitmask
; }
144 /* Prevent leaks of NFSv4 errors into userland */
145 static int nfs4_map_errors(int err
)
150 case -NFS4ERR_RESOURCE
:
151 case -NFS4ERR_LAYOUTTRYLATER
:
152 case -NFS4ERR_RECALLCONFLICT
:
154 case -NFS4ERR_WRONGSEC
:
156 case -NFS4ERR_BADOWNER
:
157 case -NFS4ERR_BADNAME
:
159 case -NFS4ERR_SHARE_DENIED
:
161 case -NFS4ERR_MINOR_VERS_MISMATCH
:
162 return -EPROTONOSUPPORT
;
163 case -NFS4ERR_ACCESS
:
165 case -NFS4ERR_FILE_OPEN
:
168 dprintk("%s could not handle NFSv4 error %d\n",
176 * This is our standard bitmap for GETATTR requests.
178 const u32 nfs4_fattr_bitmap
[3] = {
180 | FATTR4_WORD0_CHANGE
183 | FATTR4_WORD0_FILEID
,
185 | FATTR4_WORD1_NUMLINKS
187 | FATTR4_WORD1_OWNER_GROUP
188 | FATTR4_WORD1_RAWDEV
189 | FATTR4_WORD1_SPACE_USED
190 | FATTR4_WORD1_TIME_ACCESS
191 | FATTR4_WORD1_TIME_METADATA
192 | FATTR4_WORD1_TIME_MODIFY
,
193 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
194 FATTR4_WORD2_SECURITY_LABEL
198 static const u32 nfs4_pnfs_open_bitmap
[3] = {
200 | FATTR4_WORD0_CHANGE
203 | FATTR4_WORD0_FILEID
,
205 | FATTR4_WORD1_NUMLINKS
207 | FATTR4_WORD1_OWNER_GROUP
208 | FATTR4_WORD1_RAWDEV
209 | FATTR4_WORD1_SPACE_USED
210 | FATTR4_WORD1_TIME_ACCESS
211 | FATTR4_WORD1_TIME_METADATA
212 | FATTR4_WORD1_TIME_MODIFY
,
213 FATTR4_WORD2_MDSTHRESHOLD
216 static const u32 nfs4_open_noattr_bitmap
[3] = {
218 | FATTR4_WORD0_CHANGE
219 | FATTR4_WORD0_FILEID
,
222 const u32 nfs4_statfs_bitmap
[3] = {
223 FATTR4_WORD0_FILES_AVAIL
224 | FATTR4_WORD0_FILES_FREE
225 | FATTR4_WORD0_FILES_TOTAL
,
226 FATTR4_WORD1_SPACE_AVAIL
227 | FATTR4_WORD1_SPACE_FREE
228 | FATTR4_WORD1_SPACE_TOTAL
231 const u32 nfs4_pathconf_bitmap
[3] = {
233 | FATTR4_WORD0_MAXNAME
,
237 const u32 nfs4_fsinfo_bitmap
[3] = { FATTR4_WORD0_MAXFILESIZE
238 | FATTR4_WORD0_MAXREAD
239 | FATTR4_WORD0_MAXWRITE
240 | FATTR4_WORD0_LEASE_TIME
,
241 FATTR4_WORD1_TIME_DELTA
242 | FATTR4_WORD1_FS_LAYOUT_TYPES
,
243 FATTR4_WORD2_LAYOUT_BLKSIZE
246 const u32 nfs4_fs_locations_bitmap
[3] = {
248 | FATTR4_WORD0_CHANGE
251 | FATTR4_WORD0_FILEID
252 | FATTR4_WORD0_FS_LOCATIONS
,
254 | FATTR4_WORD1_NUMLINKS
256 | FATTR4_WORD1_OWNER_GROUP
257 | FATTR4_WORD1_RAWDEV
258 | FATTR4_WORD1_SPACE_USED
259 | FATTR4_WORD1_TIME_ACCESS
260 | FATTR4_WORD1_TIME_METADATA
261 | FATTR4_WORD1_TIME_MODIFY
262 | FATTR4_WORD1_MOUNTED_ON_FILEID
,
265 static void nfs4_setup_readdir(u64 cookie
, __be32
*verifier
, struct dentry
*dentry
,
266 struct nfs4_readdir_arg
*readdir
)
271 readdir
->cookie
= cookie
;
272 memcpy(&readdir
->verifier
, verifier
, sizeof(readdir
->verifier
));
277 memset(&readdir
->verifier
, 0, sizeof(readdir
->verifier
));
282 * NFSv4 servers do not return entries for '.' and '..'
283 * Therefore, we fake these entries here. We let '.'
284 * have cookie 0 and '..' have cookie 1. Note that
285 * when talking to the server, we always send cookie 0
288 start
= p
= kmap_atomic(*readdir
->pages
);
291 *p
++ = xdr_one
; /* next */
292 *p
++ = xdr_zero
; /* cookie, first word */
293 *p
++ = xdr_one
; /* cookie, second word */
294 *p
++ = xdr_one
; /* entry len */
295 memcpy(p
, ".\0\0\0", 4); /* entry */
297 *p
++ = xdr_one
; /* bitmap length */
298 *p
++ = htonl(FATTR4_WORD0_FILEID
); /* bitmap */
299 *p
++ = htonl(8); /* attribute buffer length */
300 p
= xdr_encode_hyper(p
, NFS_FILEID(dentry
->d_inode
));
303 *p
++ = xdr_one
; /* next */
304 *p
++ = xdr_zero
; /* cookie, first word */
305 *p
++ = xdr_two
; /* cookie, second word */
306 *p
++ = xdr_two
; /* entry len */
307 memcpy(p
, "..\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(dentry
->d_parent
->d_inode
));
314 readdir
->pgbase
= (char *)p
- (char *)start
;
315 readdir
->count
-= readdir
->pgbase
;
316 kunmap_atomic(start
);
319 static int nfs4_delay(struct rpc_clnt
*clnt
, long *timeout
)
326 *timeout
= NFS4_POLL_RETRY_MIN
;
327 if (*timeout
> NFS4_POLL_RETRY_MAX
)
328 *timeout
= NFS4_POLL_RETRY_MAX
;
329 freezable_schedule_timeout_killable_unsafe(*timeout
);
330 if (fatal_signal_pending(current
))
336 /* This is the error handling routine for processes that are allowed
339 static int nfs4_handle_exception(struct nfs_server
*server
, int errorcode
, struct nfs4_exception
*exception
)
341 struct nfs_client
*clp
= server
->nfs_client
;
342 struct nfs4_state
*state
= exception
->state
;
343 struct inode
*inode
= exception
->inode
;
346 exception
->retry
= 0;
350 case -NFS4ERR_OPENMODE
:
351 if (inode
&& nfs4_have_delegation(inode
, FMODE_READ
)) {
352 nfs4_inode_return_delegation(inode
);
353 exception
->retry
= 1;
358 ret
= nfs4_schedule_stateid_recovery(server
, state
);
361 goto wait_on_recovery
;
362 case -NFS4ERR_DELEG_REVOKED
:
363 case -NFS4ERR_ADMIN_REVOKED
:
364 case -NFS4ERR_BAD_STATEID
:
365 if (inode
!= NULL
&& nfs4_have_delegation(inode
, FMODE_READ
)) {
366 nfs_remove_bad_delegation(inode
);
367 exception
->retry
= 1;
372 ret
= nfs4_schedule_stateid_recovery(server
, state
);
375 goto wait_on_recovery
;
376 case -NFS4ERR_EXPIRED
:
378 ret
= nfs4_schedule_stateid_recovery(server
, state
);
382 case -NFS4ERR_STALE_STATEID
:
383 case -NFS4ERR_STALE_CLIENTID
:
384 nfs4_schedule_lease_recovery(clp
);
385 goto wait_on_recovery
;
386 #if defined(CONFIG_NFS_V4_1)
387 case -NFS4ERR_BADSESSION
:
388 case -NFS4ERR_BADSLOT
:
389 case -NFS4ERR_BAD_HIGH_SLOT
:
390 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
391 case -NFS4ERR_DEADSESSION
:
392 case -NFS4ERR_SEQ_FALSE_RETRY
:
393 case -NFS4ERR_SEQ_MISORDERED
:
394 dprintk("%s ERROR: %d Reset session\n", __func__
,
396 nfs4_schedule_session_recovery(clp
->cl_session
, errorcode
);
397 goto wait_on_recovery
;
398 #endif /* defined(CONFIG_NFS_V4_1) */
399 case -NFS4ERR_FILE_OPEN
:
400 if (exception
->timeout
> HZ
) {
401 /* We have retried a decent amount, time to
409 ret
= nfs4_delay(server
->client
, &exception
->timeout
);
412 case -NFS4ERR_RETRY_UNCACHED_REP
:
413 case -NFS4ERR_OLD_STATEID
:
414 exception
->retry
= 1;
416 case -NFS4ERR_BADOWNER
:
417 /* The following works around a Linux server bug! */
418 case -NFS4ERR_BADNAME
:
419 if (server
->caps
& NFS_CAP_UIDGID_NOMAP
) {
420 server
->caps
&= ~NFS_CAP_UIDGID_NOMAP
;
421 exception
->retry
= 1;
422 printk(KERN_WARNING
"NFS: v4 server %s "
423 "does not accept raw "
425 "Reenabling the idmapper.\n",
426 server
->nfs_client
->cl_hostname
);
429 /* We failed to handle the error */
430 return nfs4_map_errors(ret
);
432 ret
= nfs4_wait_clnt_recover(clp
);
434 exception
->retry
= 1;
439 static void do_renew_lease(struct nfs_client
*clp
, unsigned long timestamp
)
441 spin_lock(&clp
->cl_lock
);
442 if (time_before(clp
->cl_last_renewal
,timestamp
))
443 clp
->cl_last_renewal
= timestamp
;
444 spin_unlock(&clp
->cl_lock
);
447 static void renew_lease(const struct nfs_server
*server
, unsigned long timestamp
)
449 do_renew_lease(server
->nfs_client
, timestamp
);
452 #if defined(CONFIG_NFS_V4_1)
454 static void nfs41_sequence_free_slot(struct nfs4_sequence_res
*res
)
456 struct nfs4_session
*session
;
457 struct nfs4_slot_table
*tbl
;
458 bool send_new_highest_used_slotid
= false;
461 /* just wake up the next guy waiting since
462 * we may have not consumed a slot after all */
463 dprintk("%s: No slot\n", __func__
);
466 tbl
= res
->sr_slot
->table
;
467 session
= tbl
->session
;
469 spin_lock(&tbl
->slot_tbl_lock
);
470 /* Be nice to the server: try to ensure that the last transmitted
471 * value for highest_user_slotid <= target_highest_slotid
473 if (tbl
->highest_used_slotid
> tbl
->target_highest_slotid
)
474 send_new_highest_used_slotid
= true;
476 if (nfs41_wake_and_assign_slot(tbl
, res
->sr_slot
)) {
477 send_new_highest_used_slotid
= false;
480 nfs4_free_slot(tbl
, res
->sr_slot
);
482 if (tbl
->highest_used_slotid
!= NFS4_NO_SLOT
)
483 send_new_highest_used_slotid
= false;
485 spin_unlock(&tbl
->slot_tbl_lock
);
487 if (send_new_highest_used_slotid
)
488 nfs41_server_notify_highest_slotid_update(session
->clp
);
491 static int nfs41_sequence_done(struct rpc_task
*task
, struct nfs4_sequence_res
*res
)
493 struct nfs4_session
*session
;
494 struct nfs4_slot
*slot
;
495 struct nfs_client
*clp
;
496 bool interrupted
= false;
499 /* don't increment the sequence number if the task wasn't sent */
500 if (!RPC_WAS_SENT(task
))
504 session
= slot
->table
->session
;
506 if (slot
->interrupted
) {
507 slot
->interrupted
= 0;
511 trace_nfs4_sequence_done(session
, res
);
512 /* Check the SEQUENCE operation status */
513 switch (res
->sr_status
) {
515 /* Update the slot's sequence and clientid lease timer */
518 do_renew_lease(clp
, res
->sr_timestamp
);
519 /* Check sequence flags */
520 if (res
->sr_status_flags
!= 0)
521 nfs4_schedule_lease_recovery(clp
);
522 nfs41_update_target_slotid(slot
->table
, slot
, res
);
526 * sr_status remains 1 if an RPC level error occurred.
527 * The server may or may not have processed the sequence
529 * Mark the slot as having hosted an interrupted RPC call.
531 slot
->interrupted
= 1;
534 /* The server detected a resend of the RPC call and
535 * returned NFS4ERR_DELAY as per Section 2.10.6.2
538 dprintk("%s: slot=%u seq=%u: Operation in progress\n",
543 case -NFS4ERR_BADSLOT
:
545 * The slot id we used was probably retired. Try again
546 * using a different slot id.
549 case -NFS4ERR_SEQ_MISORDERED
:
551 * Was the last operation on this sequence interrupted?
552 * If so, retry after bumping the sequence number.
559 * Could this slot have been previously retired?
560 * If so, then the server may be expecting seq_nr = 1!
562 if (slot
->seq_nr
!= 1) {
567 case -NFS4ERR_SEQ_FALSE_RETRY
:
571 /* Just update the slot sequence no. */
575 /* The session may be reset by one of the error handlers. */
576 dprintk("%s: Error %d free the slot \n", __func__
, res
->sr_status
);
577 nfs41_sequence_free_slot(res
);
580 if (rpc_restart_call_prepare(task
)) {
586 if (!rpc_restart_call(task
))
588 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
592 static int nfs4_sequence_done(struct rpc_task
*task
,
593 struct nfs4_sequence_res
*res
)
595 if (res
->sr_slot
== NULL
)
597 return nfs41_sequence_done(task
, res
);
600 static void nfs41_init_sequence(struct nfs4_sequence_args
*args
,
601 struct nfs4_sequence_res
*res
, int cache_reply
)
603 args
->sa_slot
= NULL
;
604 args
->sa_cache_this
= 0;
605 args
->sa_privileged
= 0;
607 args
->sa_cache_this
= 1;
611 static void nfs4_set_sequence_privileged(struct nfs4_sequence_args
*args
)
613 args
->sa_privileged
= 1;
616 int nfs41_setup_sequence(struct nfs4_session
*session
,
617 struct nfs4_sequence_args
*args
,
618 struct nfs4_sequence_res
*res
,
619 struct rpc_task
*task
)
621 struct nfs4_slot
*slot
;
622 struct nfs4_slot_table
*tbl
;
624 dprintk("--> %s\n", __func__
);
625 /* slot already allocated? */
626 if (res
->sr_slot
!= NULL
)
629 tbl
= &session
->fc_slot_table
;
631 task
->tk_timeout
= 0;
633 spin_lock(&tbl
->slot_tbl_lock
);
634 if (test_bit(NFS4_SLOT_TBL_DRAINING
, &tbl
->slot_tbl_state
) &&
635 !args
->sa_privileged
) {
636 /* The state manager will wait until the slot table is empty */
637 dprintk("%s session is draining\n", __func__
);
641 slot
= nfs4_alloc_slot(tbl
);
643 /* If out of memory, try again in 1/4 second */
644 if (slot
== ERR_PTR(-ENOMEM
))
645 task
->tk_timeout
= HZ
>> 2;
646 dprintk("<-- %s: no free slots\n", __func__
);
649 spin_unlock(&tbl
->slot_tbl_lock
);
651 args
->sa_slot
= slot
;
653 dprintk("<-- %s slotid=%d seqid=%d\n", __func__
,
654 slot
->slot_nr
, slot
->seq_nr
);
657 res
->sr_timestamp
= jiffies
;
658 res
->sr_status_flags
= 0;
660 * sr_status is only set in decode_sequence, and so will remain
661 * set to 1 if an rpc level failure occurs.
664 trace_nfs4_setup_sequence(session
, args
);
666 rpc_call_start(task
);
669 /* Privileged tasks are queued with top priority */
670 if (args
->sa_privileged
)
671 rpc_sleep_on_priority(&tbl
->slot_tbl_waitq
, task
,
672 NULL
, RPC_PRIORITY_PRIVILEGED
);
674 rpc_sleep_on(&tbl
->slot_tbl_waitq
, task
, NULL
);
675 spin_unlock(&tbl
->slot_tbl_lock
);
678 EXPORT_SYMBOL_GPL(nfs41_setup_sequence
);
680 int nfs4_setup_sequence(const struct nfs_server
*server
,
681 struct nfs4_sequence_args
*args
,
682 struct nfs4_sequence_res
*res
,
683 struct rpc_task
*task
)
685 struct nfs4_session
*session
= nfs4_get_session(server
);
688 if (session
== NULL
) {
689 rpc_call_start(task
);
693 dprintk("--> %s clp %p session %p sr_slot %d\n",
694 __func__
, session
->clp
, session
, res
->sr_slot
?
695 res
->sr_slot
->slot_nr
: -1);
697 ret
= nfs41_setup_sequence(session
, args
, res
, task
);
699 dprintk("<-- %s status=%d\n", __func__
, ret
);
703 struct nfs41_call_sync_data
{
704 const struct nfs_server
*seq_server
;
705 struct nfs4_sequence_args
*seq_args
;
706 struct nfs4_sequence_res
*seq_res
;
709 static void nfs41_call_sync_prepare(struct rpc_task
*task
, void *calldata
)
711 struct nfs41_call_sync_data
*data
= calldata
;
712 struct nfs4_session
*session
= nfs4_get_session(data
->seq_server
);
714 dprintk("--> %s data->seq_server %p\n", __func__
, data
->seq_server
);
716 nfs41_setup_sequence(session
, data
->seq_args
, data
->seq_res
, task
);
719 static void nfs41_call_sync_done(struct rpc_task
*task
, void *calldata
)
721 struct nfs41_call_sync_data
*data
= calldata
;
723 nfs41_sequence_done(task
, data
->seq_res
);
726 static const struct rpc_call_ops nfs41_call_sync_ops
= {
727 .rpc_call_prepare
= nfs41_call_sync_prepare
,
728 .rpc_call_done
= nfs41_call_sync_done
,
731 static int nfs4_call_sync_sequence(struct rpc_clnt
*clnt
,
732 struct nfs_server
*server
,
733 struct rpc_message
*msg
,
734 struct nfs4_sequence_args
*args
,
735 struct nfs4_sequence_res
*res
)
738 struct rpc_task
*task
;
739 struct nfs41_call_sync_data data
= {
740 .seq_server
= server
,
744 struct rpc_task_setup task_setup
= {
747 .callback_ops
= &nfs41_call_sync_ops
,
748 .callback_data
= &data
751 task
= rpc_run_task(&task_setup
);
755 ret
= task
->tk_status
;
763 void nfs41_init_sequence(struct nfs4_sequence_args
*args
,
764 struct nfs4_sequence_res
*res
, int cache_reply
)
768 static void nfs4_set_sequence_privileged(struct nfs4_sequence_args
*args
)
773 static int nfs4_sequence_done(struct rpc_task
*task
,
774 struct nfs4_sequence_res
*res
)
778 #endif /* CONFIG_NFS_V4_1 */
781 int _nfs4_call_sync(struct rpc_clnt
*clnt
,
782 struct nfs_server
*server
,
783 struct rpc_message
*msg
,
784 struct nfs4_sequence_args
*args
,
785 struct nfs4_sequence_res
*res
)
787 return rpc_call_sync(clnt
, msg
, 0);
791 int nfs4_call_sync(struct rpc_clnt
*clnt
,
792 struct nfs_server
*server
,
793 struct rpc_message
*msg
,
794 struct nfs4_sequence_args
*args
,
795 struct nfs4_sequence_res
*res
,
798 nfs41_init_sequence(args
, res
, cache_reply
);
799 return server
->nfs_client
->cl_mvops
->call_sync(clnt
, server
, msg
,
803 static void update_changeattr(struct inode
*dir
, struct nfs4_change_info
*cinfo
)
805 struct nfs_inode
*nfsi
= NFS_I(dir
);
807 spin_lock(&dir
->i_lock
);
808 nfsi
->cache_validity
|= NFS_INO_INVALID_ATTR
|NFS_INO_INVALID_DATA
;
809 if (!cinfo
->atomic
|| cinfo
->before
!= dir
->i_version
)
810 nfs_force_lookup_revalidate(dir
);
811 dir
->i_version
= cinfo
->after
;
812 nfs_fscache_invalidate(dir
);
813 spin_unlock(&dir
->i_lock
);
816 struct nfs4_opendata
{
818 struct nfs_openargs o_arg
;
819 struct nfs_openres o_res
;
820 struct nfs_open_confirmargs c_arg
;
821 struct nfs_open_confirmres c_res
;
822 struct nfs4_string owner_name
;
823 struct nfs4_string group_name
;
824 struct nfs_fattr f_attr
;
825 struct nfs4_label
*f_label
;
827 struct dentry
*dentry
;
828 struct nfs4_state_owner
*owner
;
829 struct nfs4_state
*state
;
831 unsigned long timestamp
;
832 unsigned int rpc_done
: 1;
833 unsigned int is_recover
: 1;
838 static bool nfs4_clear_cap_atomic_open_v1(struct nfs_server
*server
,
839 int err
, struct nfs4_exception
*exception
)
843 if (!(server
->caps
& NFS_CAP_ATOMIC_OPEN_V1
))
845 server
->caps
&= ~NFS_CAP_ATOMIC_OPEN_V1
;
846 exception
->retry
= 1;
850 static enum open_claim_type4
851 nfs4_map_atomic_open_claim(struct nfs_server
*server
,
852 enum open_claim_type4 claim
)
854 if (server
->caps
& NFS_CAP_ATOMIC_OPEN_V1
)
859 case NFS4_OPEN_CLAIM_FH
:
860 return NFS4_OPEN_CLAIM_NULL
;
861 case NFS4_OPEN_CLAIM_DELEG_CUR_FH
:
862 return NFS4_OPEN_CLAIM_DELEGATE_CUR
;
863 case NFS4_OPEN_CLAIM_DELEG_PREV_FH
:
864 return NFS4_OPEN_CLAIM_DELEGATE_PREV
;
868 static void nfs4_init_opendata_res(struct nfs4_opendata
*p
)
870 p
->o_res
.f_attr
= &p
->f_attr
;
871 p
->o_res
.f_label
= p
->f_label
;
872 p
->o_res
.seqid
= p
->o_arg
.seqid
;
873 p
->c_res
.seqid
= p
->c_arg
.seqid
;
874 p
->o_res
.server
= p
->o_arg
.server
;
875 p
->o_res
.access_request
= p
->o_arg
.access
;
876 nfs_fattr_init(&p
->f_attr
);
877 nfs_fattr_init_names(&p
->f_attr
, &p
->owner_name
, &p
->group_name
);
880 static struct nfs4_opendata
*nfs4_opendata_alloc(struct dentry
*dentry
,
881 struct nfs4_state_owner
*sp
, fmode_t fmode
, int flags
,
882 const struct iattr
*attrs
,
883 struct nfs4_label
*label
,
884 enum open_claim_type4 claim
,
887 struct dentry
*parent
= dget_parent(dentry
);
888 struct inode
*dir
= parent
->d_inode
;
889 struct nfs_server
*server
= NFS_SERVER(dir
);
890 struct nfs4_opendata
*p
;
892 p
= kzalloc(sizeof(*p
), gfp_mask
);
896 p
->f_label
= nfs4_label_alloc(server
, gfp_mask
);
897 if (IS_ERR(p
->f_label
))
900 p
->o_arg
.seqid
= nfs_alloc_seqid(&sp
->so_seqid
, gfp_mask
);
901 if (p
->o_arg
.seqid
== NULL
)
903 nfs_sb_active(dentry
->d_sb
);
904 p
->dentry
= dget(dentry
);
907 atomic_inc(&sp
->so_count
);
908 p
->o_arg
.open_flags
= flags
;
909 p
->o_arg
.fmode
= fmode
& (FMODE_READ
|FMODE_WRITE
);
910 /* don't put an ACCESS op in OPEN compound if O_EXCL, because ACCESS
911 * will return permission denied for all bits until close */
912 if (!(flags
& O_EXCL
)) {
913 /* ask server to check for all possible rights as results
915 p
->o_arg
.access
= NFS4_ACCESS_READ
| NFS4_ACCESS_MODIFY
|
916 NFS4_ACCESS_EXTEND
| NFS4_ACCESS_EXECUTE
;
918 p
->o_arg
.clientid
= server
->nfs_client
->cl_clientid
;
919 p
->o_arg
.id
.create_time
= ktime_to_ns(sp
->so_seqid
.create_time
);
920 p
->o_arg
.id
.uniquifier
= sp
->so_seqid
.owner_id
;
921 p
->o_arg
.name
= &dentry
->d_name
;
922 p
->o_arg
.server
= server
;
923 p
->o_arg
.bitmask
= nfs4_bitmask(server
, label
);
924 p
->o_arg
.open_bitmap
= &nfs4_fattr_bitmap
[0];
925 p
->o_arg
.label
= label
;
926 p
->o_arg
.claim
= nfs4_map_atomic_open_claim(server
, claim
);
927 switch (p
->o_arg
.claim
) {
928 case NFS4_OPEN_CLAIM_NULL
:
929 case NFS4_OPEN_CLAIM_DELEGATE_CUR
:
930 case NFS4_OPEN_CLAIM_DELEGATE_PREV
:
931 p
->o_arg
.fh
= NFS_FH(dir
);
933 case NFS4_OPEN_CLAIM_PREVIOUS
:
934 case NFS4_OPEN_CLAIM_FH
:
935 case NFS4_OPEN_CLAIM_DELEG_CUR_FH
:
936 case NFS4_OPEN_CLAIM_DELEG_PREV_FH
:
937 p
->o_arg
.fh
= NFS_FH(dentry
->d_inode
);
939 if (attrs
!= NULL
&& attrs
->ia_valid
!= 0) {
942 p
->o_arg
.u
.attrs
= &p
->attrs
;
943 memcpy(&p
->attrs
, attrs
, sizeof(p
->attrs
));
946 verf
[1] = current
->pid
;
947 memcpy(p
->o_arg
.u
.verifier
.data
, verf
,
948 sizeof(p
->o_arg
.u
.verifier
.data
));
950 p
->c_arg
.fh
= &p
->o_res
.fh
;
951 p
->c_arg
.stateid
= &p
->o_res
.stateid
;
952 p
->c_arg
.seqid
= p
->o_arg
.seqid
;
953 nfs4_init_opendata_res(p
);
958 nfs4_label_free(p
->f_label
);
966 static void nfs4_opendata_free(struct kref
*kref
)
968 struct nfs4_opendata
*p
= container_of(kref
,
969 struct nfs4_opendata
, kref
);
970 struct super_block
*sb
= p
->dentry
->d_sb
;
972 nfs_free_seqid(p
->o_arg
.seqid
);
973 if (p
->state
!= NULL
)
974 nfs4_put_open_state(p
->state
);
975 nfs4_put_state_owner(p
->owner
);
977 nfs4_label_free(p
->f_label
);
982 nfs_fattr_free_names(&p
->f_attr
);
986 static void nfs4_opendata_put(struct nfs4_opendata
*p
)
989 kref_put(&p
->kref
, nfs4_opendata_free
);
992 static int nfs4_wait_for_completion_rpc_task(struct rpc_task
*task
)
996 ret
= rpc_wait_for_completion_task(task
);
1000 static int can_open_cached(struct nfs4_state
*state
, fmode_t mode
, int open_mode
)
1004 if (open_mode
& (O_EXCL
|O_TRUNC
))
1006 switch (mode
& (FMODE_READ
|FMODE_WRITE
)) {
1008 ret
|= test_bit(NFS_O_RDONLY_STATE
, &state
->flags
) != 0
1009 && state
->n_rdonly
!= 0;
1012 ret
|= test_bit(NFS_O_WRONLY_STATE
, &state
->flags
) != 0
1013 && state
->n_wronly
!= 0;
1015 case FMODE_READ
|FMODE_WRITE
:
1016 ret
|= test_bit(NFS_O_RDWR_STATE
, &state
->flags
) != 0
1017 && state
->n_rdwr
!= 0;
1023 static int can_open_delegated(struct nfs_delegation
*delegation
, fmode_t fmode
)
1025 if (delegation
== NULL
)
1027 if ((delegation
->type
& fmode
) != fmode
)
1029 if (test_bit(NFS_DELEGATION_NEED_RECLAIM
, &delegation
->flags
))
1031 if (test_bit(NFS_DELEGATION_RETURNING
, &delegation
->flags
))
1033 nfs_mark_delegation_referenced(delegation
);
1037 static void update_open_stateflags(struct nfs4_state
*state
, fmode_t fmode
)
1046 case FMODE_READ
|FMODE_WRITE
:
1049 nfs4_state_set_mode_locked(state
, state
->state
| fmode
);
1052 static void nfs_set_open_stateid_locked(struct nfs4_state
*state
, nfs4_stateid
*stateid
, fmode_t fmode
)
1054 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0)
1055 nfs4_stateid_copy(&state
->stateid
, stateid
);
1056 nfs4_stateid_copy(&state
->open_stateid
, stateid
);
1057 set_bit(NFS_OPEN_STATE
, &state
->flags
);
1060 set_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1063 set_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1065 case FMODE_READ
|FMODE_WRITE
:
1066 set_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1070 static void nfs_set_open_stateid(struct nfs4_state
*state
, nfs4_stateid
*stateid
, fmode_t fmode
)
1072 write_seqlock(&state
->seqlock
);
1073 nfs_set_open_stateid_locked(state
, stateid
, fmode
);
1074 write_sequnlock(&state
->seqlock
);
1077 static void __update_open_stateid(struct nfs4_state
*state
, nfs4_stateid
*open_stateid
, const nfs4_stateid
*deleg_stateid
, fmode_t fmode
)
1080 * Protect the call to nfs4_state_set_mode_locked and
1081 * serialise the stateid update
1083 write_seqlock(&state
->seqlock
);
1084 if (deleg_stateid
!= NULL
) {
1085 nfs4_stateid_copy(&state
->stateid
, deleg_stateid
);
1086 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1088 if (open_stateid
!= NULL
)
1089 nfs_set_open_stateid_locked(state
, open_stateid
, fmode
);
1090 write_sequnlock(&state
->seqlock
);
1091 spin_lock(&state
->owner
->so_lock
);
1092 update_open_stateflags(state
, fmode
);
1093 spin_unlock(&state
->owner
->so_lock
);
1096 static int update_open_stateid(struct nfs4_state
*state
, nfs4_stateid
*open_stateid
, nfs4_stateid
*delegation
, fmode_t fmode
)
1098 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
1099 struct nfs_delegation
*deleg_cur
;
1102 fmode
&= (FMODE_READ
|FMODE_WRITE
);
1105 deleg_cur
= rcu_dereference(nfsi
->delegation
);
1106 if (deleg_cur
== NULL
)
1109 spin_lock(&deleg_cur
->lock
);
1110 if (rcu_dereference(nfsi
->delegation
) != deleg_cur
||
1111 test_bit(NFS_DELEGATION_RETURNING
, &deleg_cur
->flags
) ||
1112 (deleg_cur
->type
& fmode
) != fmode
)
1113 goto no_delegation_unlock
;
1115 if (delegation
== NULL
)
1116 delegation
= &deleg_cur
->stateid
;
1117 else if (!nfs4_stateid_match(&deleg_cur
->stateid
, delegation
))
1118 goto no_delegation_unlock
;
1120 nfs_mark_delegation_referenced(deleg_cur
);
1121 __update_open_stateid(state
, open_stateid
, &deleg_cur
->stateid
, fmode
);
1123 no_delegation_unlock
:
1124 spin_unlock(&deleg_cur
->lock
);
1128 if (!ret
&& open_stateid
!= NULL
) {
1129 __update_open_stateid(state
, open_stateid
, NULL
, fmode
);
1137 static void nfs4_return_incompatible_delegation(struct inode
*inode
, fmode_t fmode
)
1139 struct nfs_delegation
*delegation
;
1142 delegation
= rcu_dereference(NFS_I(inode
)->delegation
);
1143 if (delegation
== NULL
|| (delegation
->type
& fmode
) == fmode
) {
1148 nfs4_inode_return_delegation(inode
);
1151 static struct nfs4_state
*nfs4_try_open_cached(struct nfs4_opendata
*opendata
)
1153 struct nfs4_state
*state
= opendata
->state
;
1154 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
1155 struct nfs_delegation
*delegation
;
1156 int open_mode
= opendata
->o_arg
.open_flags
;
1157 fmode_t fmode
= opendata
->o_arg
.fmode
;
1158 nfs4_stateid stateid
;
1162 if (can_open_cached(state
, fmode
, open_mode
)) {
1163 spin_lock(&state
->owner
->so_lock
);
1164 if (can_open_cached(state
, fmode
, open_mode
)) {
1165 update_open_stateflags(state
, fmode
);
1166 spin_unlock(&state
->owner
->so_lock
);
1167 goto out_return_state
;
1169 spin_unlock(&state
->owner
->so_lock
);
1172 delegation
= rcu_dereference(nfsi
->delegation
);
1173 if (!can_open_delegated(delegation
, fmode
)) {
1177 /* Save the delegation */
1178 nfs4_stateid_copy(&stateid
, &delegation
->stateid
);
1180 nfs_release_seqid(opendata
->o_arg
.seqid
);
1181 if (!opendata
->is_recover
) {
1182 ret
= nfs_may_open(state
->inode
, state
->owner
->so_cred
, open_mode
);
1188 /* Try to update the stateid using the delegation */
1189 if (update_open_stateid(state
, NULL
, &stateid
, fmode
))
1190 goto out_return_state
;
1193 return ERR_PTR(ret
);
1195 atomic_inc(&state
->count
);
1200 nfs4_opendata_check_deleg(struct nfs4_opendata
*data
, struct nfs4_state
*state
)
1202 struct nfs_client
*clp
= NFS_SERVER(state
->inode
)->nfs_client
;
1203 struct nfs_delegation
*delegation
;
1204 int delegation_flags
= 0;
1207 delegation
= rcu_dereference(NFS_I(state
->inode
)->delegation
);
1209 delegation_flags
= delegation
->flags
;
1211 if (data
->o_arg
.claim
== NFS4_OPEN_CLAIM_DELEGATE_CUR
) {
1212 pr_err_ratelimited("NFS: Broken NFSv4 server %s is "
1213 "returning a delegation for "
1214 "OPEN(CLAIM_DELEGATE_CUR)\n",
1216 } else if ((delegation_flags
& 1UL<<NFS_DELEGATION_NEED_RECLAIM
) == 0)
1217 nfs_inode_set_delegation(state
->inode
,
1218 data
->owner
->so_cred
,
1221 nfs_inode_reclaim_delegation(state
->inode
,
1222 data
->owner
->so_cred
,
1227 * Check the inode attributes against the CLAIM_PREVIOUS returned attributes
1228 * and update the nfs4_state.
1230 static struct nfs4_state
*
1231 _nfs4_opendata_reclaim_to_nfs4_state(struct nfs4_opendata
*data
)
1233 struct inode
*inode
= data
->state
->inode
;
1234 struct nfs4_state
*state
= data
->state
;
1237 if (!data
->rpc_done
) {
1238 ret
= data
->rpc_status
;
1243 if (!(data
->f_attr
.valid
& NFS_ATTR_FATTR_TYPE
) ||
1244 !(data
->f_attr
.valid
& NFS_ATTR_FATTR_FILEID
) ||
1245 !(data
->f_attr
.valid
& NFS_ATTR_FATTR_CHANGE
))
1249 state
= nfs4_get_open_state(inode
, data
->owner
);
1253 ret
= nfs_refresh_inode(inode
, &data
->f_attr
);
1257 nfs_setsecurity(inode
, &data
->f_attr
, data
->f_label
);
1259 if (data
->o_res
.delegation_type
!= 0)
1260 nfs4_opendata_check_deleg(data
, state
);
1261 update_open_stateid(state
, &data
->o_res
.stateid
, NULL
,
1266 return ERR_PTR(ret
);
1270 static struct nfs4_state
*
1271 _nfs4_opendata_to_nfs4_state(struct nfs4_opendata
*data
)
1273 struct inode
*inode
;
1274 struct nfs4_state
*state
= NULL
;
1277 if (!data
->rpc_done
) {
1278 state
= nfs4_try_open_cached(data
);
1283 if (!(data
->f_attr
.valid
& NFS_ATTR_FATTR
))
1285 inode
= nfs_fhget(data
->dir
->d_sb
, &data
->o_res
.fh
, &data
->f_attr
, data
->f_label
);
1286 ret
= PTR_ERR(inode
);
1290 state
= nfs4_get_open_state(inode
, data
->owner
);
1293 if (data
->o_res
.delegation_type
!= 0)
1294 nfs4_opendata_check_deleg(data
, state
);
1295 update_open_stateid(state
, &data
->o_res
.stateid
, NULL
,
1299 nfs_release_seqid(data
->o_arg
.seqid
);
1304 return ERR_PTR(ret
);
1307 static struct nfs4_state
*
1308 nfs4_opendata_to_nfs4_state(struct nfs4_opendata
*data
)
1310 if (data
->o_arg
.claim
== NFS4_OPEN_CLAIM_PREVIOUS
)
1311 return _nfs4_opendata_reclaim_to_nfs4_state(data
);
1312 return _nfs4_opendata_to_nfs4_state(data
);
1315 static struct nfs_open_context
*nfs4_state_find_open_context(struct nfs4_state
*state
)
1317 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
1318 struct nfs_open_context
*ctx
;
1320 spin_lock(&state
->inode
->i_lock
);
1321 list_for_each_entry(ctx
, &nfsi
->open_files
, list
) {
1322 if (ctx
->state
!= state
)
1324 get_nfs_open_context(ctx
);
1325 spin_unlock(&state
->inode
->i_lock
);
1328 spin_unlock(&state
->inode
->i_lock
);
1329 return ERR_PTR(-ENOENT
);
1332 static struct nfs4_opendata
*nfs4_open_recoverdata_alloc(struct nfs_open_context
*ctx
,
1333 struct nfs4_state
*state
, enum open_claim_type4 claim
)
1335 struct nfs4_opendata
*opendata
;
1337 opendata
= nfs4_opendata_alloc(ctx
->dentry
, state
->owner
, 0, 0,
1338 NULL
, NULL
, claim
, GFP_NOFS
);
1339 if (opendata
== NULL
)
1340 return ERR_PTR(-ENOMEM
);
1341 opendata
->state
= state
;
1342 atomic_inc(&state
->count
);
1346 static int nfs4_open_recover_helper(struct nfs4_opendata
*opendata
, fmode_t fmode
, struct nfs4_state
**res
)
1348 struct nfs4_state
*newstate
;
1351 opendata
->o_arg
.open_flags
= 0;
1352 opendata
->o_arg
.fmode
= fmode
;
1353 memset(&opendata
->o_res
, 0, sizeof(opendata
->o_res
));
1354 memset(&opendata
->c_res
, 0, sizeof(opendata
->c_res
));
1355 nfs4_init_opendata_res(opendata
);
1356 ret
= _nfs4_recover_proc_open(opendata
);
1359 newstate
= nfs4_opendata_to_nfs4_state(opendata
);
1360 if (IS_ERR(newstate
))
1361 return PTR_ERR(newstate
);
1362 nfs4_close_state(newstate
, fmode
);
1367 static int nfs4_open_recover(struct nfs4_opendata
*opendata
, struct nfs4_state
*state
)
1369 struct nfs4_state
*newstate
;
1372 /* memory barrier prior to reading state->n_* */
1373 clear_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1374 clear_bit(NFS_OPEN_STATE
, &state
->flags
);
1376 if (state
->n_rdwr
!= 0) {
1377 clear_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1378 ret
= nfs4_open_recover_helper(opendata
, FMODE_READ
|FMODE_WRITE
, &newstate
);
1381 if (newstate
!= state
)
1384 if (state
->n_wronly
!= 0) {
1385 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1386 ret
= nfs4_open_recover_helper(opendata
, FMODE_WRITE
, &newstate
);
1389 if (newstate
!= state
)
1392 if (state
->n_rdonly
!= 0) {
1393 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1394 ret
= nfs4_open_recover_helper(opendata
, FMODE_READ
, &newstate
);
1397 if (newstate
!= state
)
1401 * We may have performed cached opens for all three recoveries.
1402 * Check if we need to update the current stateid.
1404 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0 &&
1405 !nfs4_stateid_match(&state
->stateid
, &state
->open_stateid
)) {
1406 write_seqlock(&state
->seqlock
);
1407 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0)
1408 nfs4_stateid_copy(&state
->stateid
, &state
->open_stateid
);
1409 write_sequnlock(&state
->seqlock
);
1416 * reclaim state on the server after a reboot.
1418 static int _nfs4_do_open_reclaim(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1420 struct nfs_delegation
*delegation
;
1421 struct nfs4_opendata
*opendata
;
1422 fmode_t delegation_type
= 0;
1425 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
,
1426 NFS4_OPEN_CLAIM_PREVIOUS
);
1427 if (IS_ERR(opendata
))
1428 return PTR_ERR(opendata
);
1430 delegation
= rcu_dereference(NFS_I(state
->inode
)->delegation
);
1431 if (delegation
!= NULL
&& test_bit(NFS_DELEGATION_NEED_RECLAIM
, &delegation
->flags
) != 0)
1432 delegation_type
= delegation
->type
;
1434 opendata
->o_arg
.u
.delegation_type
= delegation_type
;
1435 status
= nfs4_open_recover(opendata
, state
);
1436 nfs4_opendata_put(opendata
);
1440 static int nfs4_do_open_reclaim(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1442 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1443 struct nfs4_exception exception
= { };
1446 err
= _nfs4_do_open_reclaim(ctx
, state
);
1447 trace_nfs4_open_reclaim(ctx
, 0, err
);
1448 if (nfs4_clear_cap_atomic_open_v1(server
, err
, &exception
))
1450 if (err
!= -NFS4ERR_DELAY
)
1452 nfs4_handle_exception(server
, err
, &exception
);
1453 } while (exception
.retry
);
1457 static int nfs4_open_reclaim(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
1459 struct nfs_open_context
*ctx
;
1462 ctx
= nfs4_state_find_open_context(state
);
1465 ret
= nfs4_do_open_reclaim(ctx
, state
);
1466 put_nfs_open_context(ctx
);
1470 static int nfs4_handle_delegation_recall_error(struct nfs_server
*server
, struct nfs4_state
*state
, const nfs4_stateid
*stateid
, int err
)
1474 printk(KERN_ERR
"NFS: %s: unhandled error "
1475 "%d.\n", __func__
, err
);
1480 case -NFS4ERR_BADSESSION
:
1481 case -NFS4ERR_BADSLOT
:
1482 case -NFS4ERR_BAD_HIGH_SLOT
:
1483 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
1484 case -NFS4ERR_DEADSESSION
:
1485 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1486 nfs4_schedule_session_recovery(server
->nfs_client
->cl_session
, err
);
1488 case -NFS4ERR_STALE_CLIENTID
:
1489 case -NFS4ERR_STALE_STATEID
:
1490 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1491 case -NFS4ERR_EXPIRED
:
1492 /* Don't recall a delegation if it was lost */
1493 nfs4_schedule_lease_recovery(server
->nfs_client
);
1495 case -NFS4ERR_DELEG_REVOKED
:
1496 case -NFS4ERR_ADMIN_REVOKED
:
1497 case -NFS4ERR_BAD_STATEID
:
1498 case -NFS4ERR_OPENMODE
:
1499 nfs_inode_find_state_and_recover(state
->inode
,
1501 nfs4_schedule_stateid_recovery(server
, state
);
1503 case -NFS4ERR_DELAY
:
1504 case -NFS4ERR_GRACE
:
1505 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1509 case -NFS4ERR_DENIED
:
1510 /* kill_proc(fl->fl_pid, SIGLOST, 1); */
1516 int nfs4_open_delegation_recall(struct nfs_open_context
*ctx
, struct nfs4_state
*state
, const nfs4_stateid
*stateid
)
1518 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1519 struct nfs4_opendata
*opendata
;
1522 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
,
1523 NFS4_OPEN_CLAIM_DELEG_CUR_FH
);
1524 if (IS_ERR(opendata
))
1525 return PTR_ERR(opendata
);
1526 nfs4_stateid_copy(&opendata
->o_arg
.u
.delegation
, stateid
);
1527 err
= nfs4_open_recover(opendata
, state
);
1528 nfs4_opendata_put(opendata
);
1529 return nfs4_handle_delegation_recall_error(server
, state
, stateid
, err
);
1532 static void nfs4_open_confirm_done(struct rpc_task
*task
, void *calldata
)
1534 struct nfs4_opendata
*data
= calldata
;
1536 data
->rpc_status
= task
->tk_status
;
1537 if (data
->rpc_status
== 0) {
1538 nfs4_stateid_copy(&data
->o_res
.stateid
, &data
->c_res
.stateid
);
1539 nfs_confirm_seqid(&data
->owner
->so_seqid
, 0);
1540 renew_lease(data
->o_res
.server
, data
->timestamp
);
1545 static void nfs4_open_confirm_release(void *calldata
)
1547 struct nfs4_opendata
*data
= calldata
;
1548 struct nfs4_state
*state
= NULL
;
1550 /* If this request hasn't been cancelled, do nothing */
1551 if (data
->cancelled
== 0)
1553 /* In case of error, no cleanup! */
1554 if (!data
->rpc_done
)
1556 state
= nfs4_opendata_to_nfs4_state(data
);
1558 nfs4_close_state(state
, data
->o_arg
.fmode
);
1560 nfs4_opendata_put(data
);
1563 static const struct rpc_call_ops nfs4_open_confirm_ops
= {
1564 .rpc_call_done
= nfs4_open_confirm_done
,
1565 .rpc_release
= nfs4_open_confirm_release
,
1569 * Note: On error, nfs4_proc_open_confirm will free the struct nfs4_opendata
1571 static int _nfs4_proc_open_confirm(struct nfs4_opendata
*data
)
1573 struct nfs_server
*server
= NFS_SERVER(data
->dir
->d_inode
);
1574 struct rpc_task
*task
;
1575 struct rpc_message msg
= {
1576 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_CONFIRM
],
1577 .rpc_argp
= &data
->c_arg
,
1578 .rpc_resp
= &data
->c_res
,
1579 .rpc_cred
= data
->owner
->so_cred
,
1581 struct rpc_task_setup task_setup_data
= {
1582 .rpc_client
= server
->client
,
1583 .rpc_message
= &msg
,
1584 .callback_ops
= &nfs4_open_confirm_ops
,
1585 .callback_data
= data
,
1586 .workqueue
= nfsiod_workqueue
,
1587 .flags
= RPC_TASK_ASYNC
,
1591 kref_get(&data
->kref
);
1593 data
->rpc_status
= 0;
1594 data
->timestamp
= jiffies
;
1595 task
= rpc_run_task(&task_setup_data
);
1597 return PTR_ERR(task
);
1598 status
= nfs4_wait_for_completion_rpc_task(task
);
1600 data
->cancelled
= 1;
1603 status
= data
->rpc_status
;
1608 static void nfs4_open_prepare(struct rpc_task
*task
, void *calldata
)
1610 struct nfs4_opendata
*data
= calldata
;
1611 struct nfs4_state_owner
*sp
= data
->owner
;
1612 struct nfs_client
*clp
= sp
->so_server
->nfs_client
;
1614 if (nfs_wait_on_sequence(data
->o_arg
.seqid
, task
) != 0)
1617 * Check if we still need to send an OPEN call, or if we can use
1618 * a delegation instead.
1620 if (data
->state
!= NULL
) {
1621 struct nfs_delegation
*delegation
;
1623 if (can_open_cached(data
->state
, data
->o_arg
.fmode
, data
->o_arg
.open_flags
))
1626 delegation
= rcu_dereference(NFS_I(data
->state
->inode
)->delegation
);
1627 if (data
->o_arg
.claim
!= NFS4_OPEN_CLAIM_DELEGATE_CUR
&&
1628 data
->o_arg
.claim
!= NFS4_OPEN_CLAIM_DELEG_CUR_FH
&&
1629 can_open_delegated(delegation
, data
->o_arg
.fmode
))
1630 goto unlock_no_action
;
1633 /* Update client id. */
1634 data
->o_arg
.clientid
= clp
->cl_clientid
;
1635 switch (data
->o_arg
.claim
) {
1636 case NFS4_OPEN_CLAIM_PREVIOUS
:
1637 case NFS4_OPEN_CLAIM_DELEG_CUR_FH
:
1638 case NFS4_OPEN_CLAIM_DELEG_PREV_FH
:
1639 data
->o_arg
.open_bitmap
= &nfs4_open_noattr_bitmap
[0];
1640 case NFS4_OPEN_CLAIM_FH
:
1641 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_NOATTR
];
1642 nfs_copy_fh(&data
->o_res
.fh
, data
->o_arg
.fh
);
1644 data
->timestamp
= jiffies
;
1645 if (nfs4_setup_sequence(data
->o_arg
.server
,
1646 &data
->o_arg
.seq_args
,
1647 &data
->o_res
.seq_res
,
1649 nfs_release_seqid(data
->o_arg
.seqid
);
1651 /* Set the create mode (note dependency on the session type) */
1652 data
->o_arg
.createmode
= NFS4_CREATE_UNCHECKED
;
1653 if (data
->o_arg
.open_flags
& O_EXCL
) {
1654 data
->o_arg
.createmode
= NFS4_CREATE_EXCLUSIVE
;
1655 if (nfs4_has_persistent_session(clp
))
1656 data
->o_arg
.createmode
= NFS4_CREATE_GUARDED
;
1657 else if (clp
->cl_mvops
->minor_version
> 0)
1658 data
->o_arg
.createmode
= NFS4_CREATE_EXCLUSIVE4_1
;
1664 task
->tk_action
= NULL
;
1666 nfs4_sequence_done(task
, &data
->o_res
.seq_res
);
1669 static void nfs4_open_done(struct rpc_task
*task
, void *calldata
)
1671 struct nfs4_opendata
*data
= calldata
;
1673 data
->rpc_status
= task
->tk_status
;
1675 if (!nfs4_sequence_done(task
, &data
->o_res
.seq_res
))
1678 if (task
->tk_status
== 0) {
1679 if (data
->o_res
.f_attr
->valid
& NFS_ATTR_FATTR_TYPE
) {
1680 switch (data
->o_res
.f_attr
->mode
& S_IFMT
) {
1684 data
->rpc_status
= -ELOOP
;
1687 data
->rpc_status
= -EISDIR
;
1690 data
->rpc_status
= -ENOTDIR
;
1693 renew_lease(data
->o_res
.server
, data
->timestamp
);
1694 if (!(data
->o_res
.rflags
& NFS4_OPEN_RESULT_CONFIRM
))
1695 nfs_confirm_seqid(&data
->owner
->so_seqid
, 0);
1700 static void nfs4_open_release(void *calldata
)
1702 struct nfs4_opendata
*data
= calldata
;
1703 struct nfs4_state
*state
= NULL
;
1705 /* If this request hasn't been cancelled, do nothing */
1706 if (data
->cancelled
== 0)
1708 /* In case of error, no cleanup! */
1709 if (data
->rpc_status
!= 0 || !data
->rpc_done
)
1711 /* In case we need an open_confirm, no cleanup! */
1712 if (data
->o_res
.rflags
& NFS4_OPEN_RESULT_CONFIRM
)
1714 state
= nfs4_opendata_to_nfs4_state(data
);
1716 nfs4_close_state(state
, data
->o_arg
.fmode
);
1718 nfs4_opendata_put(data
);
1721 static const struct rpc_call_ops nfs4_open_ops
= {
1722 .rpc_call_prepare
= nfs4_open_prepare
,
1723 .rpc_call_done
= nfs4_open_done
,
1724 .rpc_release
= nfs4_open_release
,
1727 static int nfs4_run_open_task(struct nfs4_opendata
*data
, int isrecover
)
1729 struct inode
*dir
= data
->dir
->d_inode
;
1730 struct nfs_server
*server
= NFS_SERVER(dir
);
1731 struct nfs_openargs
*o_arg
= &data
->o_arg
;
1732 struct nfs_openres
*o_res
= &data
->o_res
;
1733 struct rpc_task
*task
;
1734 struct rpc_message msg
= {
1735 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN
],
1738 .rpc_cred
= data
->owner
->so_cred
,
1740 struct rpc_task_setup task_setup_data
= {
1741 .rpc_client
= server
->client
,
1742 .rpc_message
= &msg
,
1743 .callback_ops
= &nfs4_open_ops
,
1744 .callback_data
= data
,
1745 .workqueue
= nfsiod_workqueue
,
1746 .flags
= RPC_TASK_ASYNC
,
1750 nfs41_init_sequence(&o_arg
->seq_args
, &o_res
->seq_res
, 1);
1751 kref_get(&data
->kref
);
1753 data
->rpc_status
= 0;
1754 data
->cancelled
= 0;
1755 data
->is_recover
= 0;
1757 nfs4_set_sequence_privileged(&o_arg
->seq_args
);
1758 data
->is_recover
= 1;
1760 task
= rpc_run_task(&task_setup_data
);
1762 return PTR_ERR(task
);
1763 status
= nfs4_wait_for_completion_rpc_task(task
);
1765 data
->cancelled
= 1;
1768 status
= data
->rpc_status
;
1774 static int _nfs4_recover_proc_open(struct nfs4_opendata
*data
)
1776 struct inode
*dir
= data
->dir
->d_inode
;
1777 struct nfs_openres
*o_res
= &data
->o_res
;
1780 status
= nfs4_run_open_task(data
, 1);
1781 if (status
!= 0 || !data
->rpc_done
)
1784 nfs_fattr_map_and_free_names(NFS_SERVER(dir
), &data
->f_attr
);
1786 if (o_res
->rflags
& NFS4_OPEN_RESULT_CONFIRM
) {
1787 status
= _nfs4_proc_open_confirm(data
);
1795 static int nfs4_opendata_access(struct rpc_cred
*cred
,
1796 struct nfs4_opendata
*opendata
,
1797 struct nfs4_state
*state
, fmode_t fmode
,
1800 struct nfs_access_entry cache
;
1803 /* access call failed or for some reason the server doesn't
1804 * support any access modes -- defer access call until later */
1805 if (opendata
->o_res
.access_supported
== 0)
1809 /* don't check MAY_WRITE - a newly created file may not have
1810 * write mode bits, but POSIX allows the creating process to write.
1811 * use openflags to check for exec, because fmode won't
1812 * always have FMODE_EXEC set when file open for exec. */
1813 if (openflags
& __FMODE_EXEC
) {
1814 /* ONLY check for exec rights */
1816 } else if (fmode
& FMODE_READ
)
1820 cache
.jiffies
= jiffies
;
1821 nfs_access_set_mask(&cache
, opendata
->o_res
.access_result
);
1822 nfs_access_add_cache(state
->inode
, &cache
);
1824 if ((mask
& ~cache
.mask
& (MAY_READ
| MAY_EXEC
)) == 0)
1827 /* even though OPEN succeeded, access is denied. Close the file */
1828 nfs4_close_state(state
, fmode
);
1833 * Note: On error, nfs4_proc_open will free the struct nfs4_opendata
1835 static int _nfs4_proc_open(struct nfs4_opendata
*data
)
1837 struct inode
*dir
= data
->dir
->d_inode
;
1838 struct nfs_server
*server
= NFS_SERVER(dir
);
1839 struct nfs_openargs
*o_arg
= &data
->o_arg
;
1840 struct nfs_openres
*o_res
= &data
->o_res
;
1843 status
= nfs4_run_open_task(data
, 0);
1844 if (!data
->rpc_done
)
1847 if (status
== -NFS4ERR_BADNAME
&&
1848 !(o_arg
->open_flags
& O_CREAT
))
1853 nfs_fattr_map_and_free_names(server
, &data
->f_attr
);
1855 if (o_arg
->open_flags
& O_CREAT
)
1856 update_changeattr(dir
, &o_res
->cinfo
);
1857 if ((o_res
->rflags
& NFS4_OPEN_RESULT_LOCKTYPE_POSIX
) == 0)
1858 server
->caps
&= ~NFS_CAP_POSIX_LOCK
;
1859 if(o_res
->rflags
& NFS4_OPEN_RESULT_CONFIRM
) {
1860 status
= _nfs4_proc_open_confirm(data
);
1864 if (!(o_res
->f_attr
->valid
& NFS_ATTR_FATTR
))
1865 _nfs4_proc_getattr(server
, &o_res
->fh
, o_res
->f_attr
, o_res
->f_label
);
1869 static int nfs4_recover_expired_lease(struct nfs_server
*server
)
1871 return nfs4_client_recover_expired_lease(server
->nfs_client
);
1876 * reclaim state on the server after a network partition.
1877 * Assumes caller holds the appropriate lock
1879 static int _nfs4_open_expired(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1881 struct nfs4_opendata
*opendata
;
1884 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
,
1885 NFS4_OPEN_CLAIM_FH
);
1886 if (IS_ERR(opendata
))
1887 return PTR_ERR(opendata
);
1888 ret
= nfs4_open_recover(opendata
, state
);
1890 d_drop(ctx
->dentry
);
1891 nfs4_opendata_put(opendata
);
1895 static int nfs4_do_open_expired(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1897 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1898 struct nfs4_exception exception
= { };
1902 err
= _nfs4_open_expired(ctx
, state
);
1903 trace_nfs4_open_expired(ctx
, 0, err
);
1904 if (nfs4_clear_cap_atomic_open_v1(server
, err
, &exception
))
1909 case -NFS4ERR_GRACE
:
1910 case -NFS4ERR_DELAY
:
1911 nfs4_handle_exception(server
, err
, &exception
);
1914 } while (exception
.retry
);
1919 static int nfs4_open_expired(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
1921 struct nfs_open_context
*ctx
;
1924 ctx
= nfs4_state_find_open_context(state
);
1927 ret
= nfs4_do_open_expired(ctx
, state
);
1928 put_nfs_open_context(ctx
);
1932 #if defined(CONFIG_NFS_V4_1)
1933 static void nfs41_clear_delegation_stateid(struct nfs4_state
*state
)
1935 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1936 nfs4_stateid
*stateid
= &state
->stateid
;
1937 struct nfs_delegation
*delegation
;
1938 struct rpc_cred
*cred
= NULL
;
1939 int status
= -NFS4ERR_BAD_STATEID
;
1941 /* If a state reset has been done, test_stateid is unneeded */
1942 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0)
1945 /* Get the delegation credential for use by test/free_stateid */
1947 delegation
= rcu_dereference(NFS_I(state
->inode
)->delegation
);
1948 if (delegation
!= NULL
&&
1949 nfs4_stateid_match(&delegation
->stateid
, stateid
)) {
1950 cred
= get_rpccred(delegation
->cred
);
1952 status
= nfs41_test_stateid(server
, stateid
, cred
);
1956 if (status
!= NFS_OK
) {
1957 /* Free the stateid unless the server explicitly
1958 * informs us the stateid is unrecognized. */
1959 if (status
!= -NFS4ERR_BAD_STATEID
)
1960 nfs41_free_stateid(server
, stateid
, cred
);
1961 nfs_remove_bad_delegation(state
->inode
);
1963 write_seqlock(&state
->seqlock
);
1964 nfs4_stateid_copy(&state
->stateid
, &state
->open_stateid
);
1965 write_sequnlock(&state
->seqlock
);
1966 clear_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1974 * nfs41_check_open_stateid - possibly free an open stateid
1976 * @state: NFSv4 state for an inode
1978 * Returns NFS_OK if recovery for this stateid is now finished.
1979 * Otherwise a negative NFS4ERR value is returned.
1981 static int nfs41_check_open_stateid(struct nfs4_state
*state
)
1983 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1984 nfs4_stateid
*stateid
= &state
->open_stateid
;
1985 struct rpc_cred
*cred
= state
->owner
->so_cred
;
1988 /* If a state reset has been done, test_stateid is unneeded */
1989 if ((test_bit(NFS_O_RDONLY_STATE
, &state
->flags
) == 0) &&
1990 (test_bit(NFS_O_WRONLY_STATE
, &state
->flags
) == 0) &&
1991 (test_bit(NFS_O_RDWR_STATE
, &state
->flags
) == 0))
1992 return -NFS4ERR_BAD_STATEID
;
1994 status
= nfs41_test_stateid(server
, stateid
, cred
);
1995 if (status
!= NFS_OK
) {
1996 /* Free the stateid unless the server explicitly
1997 * informs us the stateid is unrecognized. */
1998 if (status
!= -NFS4ERR_BAD_STATEID
)
1999 nfs41_free_stateid(server
, stateid
, cred
);
2001 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
2002 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
2003 clear_bit(NFS_O_RDWR_STATE
, &state
->flags
);
2004 clear_bit(NFS_OPEN_STATE
, &state
->flags
);
2009 static int nfs41_open_expired(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
2013 nfs41_clear_delegation_stateid(state
);
2014 status
= nfs41_check_open_stateid(state
);
2015 if (status
!= NFS_OK
)
2016 status
= nfs4_open_expired(sp
, state
);
2022 * on an EXCLUSIVE create, the server should send back a bitmask with FATTR4-*
2023 * fields corresponding to attributes that were used to store the verifier.
2024 * Make sure we clobber those fields in the later setattr call
2026 static inline void nfs4_exclusive_attrset(struct nfs4_opendata
*opendata
, struct iattr
*sattr
)
2028 if ((opendata
->o_res
.attrset
[1] & FATTR4_WORD1_TIME_ACCESS
) &&
2029 !(sattr
->ia_valid
& ATTR_ATIME_SET
))
2030 sattr
->ia_valid
|= ATTR_ATIME
;
2032 if ((opendata
->o_res
.attrset
[1] & FATTR4_WORD1_TIME_MODIFY
) &&
2033 !(sattr
->ia_valid
& ATTR_MTIME_SET
))
2034 sattr
->ia_valid
|= ATTR_MTIME
;
2037 static int _nfs4_open_and_get_state(struct nfs4_opendata
*opendata
,
2040 struct nfs_open_context
*ctx
)
2042 struct nfs4_state_owner
*sp
= opendata
->owner
;
2043 struct nfs_server
*server
= sp
->so_server
;
2044 struct dentry
*dentry
;
2045 struct nfs4_state
*state
;
2049 seq
= raw_seqcount_begin(&sp
->so_reclaim_seqcount
);
2051 ret
= _nfs4_proc_open(opendata
);
2055 state
= nfs4_opendata_to_nfs4_state(opendata
);
2056 ret
= PTR_ERR(state
);
2059 if (server
->caps
& NFS_CAP_POSIX_LOCK
)
2060 set_bit(NFS_STATE_POSIX_LOCKS
, &state
->flags
);
2062 dentry
= opendata
->dentry
;
2063 if (dentry
->d_inode
== NULL
) {
2064 /* FIXME: Is this d_drop() ever needed? */
2066 dentry
= d_add_unique(dentry
, igrab(state
->inode
));
2067 if (dentry
== NULL
) {
2068 dentry
= opendata
->dentry
;
2069 } else if (dentry
!= ctx
->dentry
) {
2071 ctx
->dentry
= dget(dentry
);
2073 nfs_set_verifier(dentry
,
2074 nfs_save_change_attribute(opendata
->dir
->d_inode
));
2077 ret
= nfs4_opendata_access(sp
->so_cred
, opendata
, state
, fmode
, flags
);
2082 if (dentry
->d_inode
== state
->inode
) {
2083 nfs_inode_attach_open_context(ctx
);
2084 if (read_seqcount_retry(&sp
->so_reclaim_seqcount
, seq
))
2085 nfs4_schedule_stateid_recovery(server
, state
);
2092 * Returns a referenced nfs4_state
2094 static int _nfs4_do_open(struct inode
*dir
,
2095 struct nfs_open_context
*ctx
,
2097 struct iattr
*sattr
,
2098 struct nfs4_label
*label
)
2100 struct nfs4_state_owner
*sp
;
2101 struct nfs4_state
*state
= NULL
;
2102 struct nfs_server
*server
= NFS_SERVER(dir
);
2103 struct nfs4_opendata
*opendata
;
2104 struct dentry
*dentry
= ctx
->dentry
;
2105 struct rpc_cred
*cred
= ctx
->cred
;
2106 struct nfs4_threshold
**ctx_th
= &ctx
->mdsthreshold
;
2107 fmode_t fmode
= ctx
->mode
& (FMODE_READ
|FMODE_WRITE
|FMODE_EXEC
);
2108 enum open_claim_type4 claim
= NFS4_OPEN_CLAIM_NULL
;
2109 struct nfs4_label
*olabel
= NULL
;
2112 /* Protect against reboot recovery conflicts */
2114 sp
= nfs4_get_state_owner(server
, cred
, GFP_KERNEL
);
2116 dprintk("nfs4_do_open: nfs4_get_state_owner failed!\n");
2119 status
= nfs4_recover_expired_lease(server
);
2121 goto err_put_state_owner
;
2122 if (dentry
->d_inode
!= NULL
)
2123 nfs4_return_incompatible_delegation(dentry
->d_inode
, fmode
);
2125 if (dentry
->d_inode
)
2126 claim
= NFS4_OPEN_CLAIM_FH
;
2127 opendata
= nfs4_opendata_alloc(dentry
, sp
, fmode
, flags
, sattr
,
2128 label
, claim
, GFP_KERNEL
);
2129 if (opendata
== NULL
)
2130 goto err_put_state_owner
;
2133 olabel
= nfs4_label_alloc(server
, GFP_KERNEL
);
2134 if (IS_ERR(olabel
)) {
2135 status
= PTR_ERR(olabel
);
2136 goto err_opendata_put
;
2140 if (ctx_th
&& server
->attr_bitmask
[2] & FATTR4_WORD2_MDSTHRESHOLD
) {
2141 opendata
->f_attr
.mdsthreshold
= pnfs_mdsthreshold_alloc();
2142 if (!opendata
->f_attr
.mdsthreshold
)
2143 goto err_free_label
;
2144 opendata
->o_arg
.open_bitmap
= &nfs4_pnfs_open_bitmap
[0];
2146 if (dentry
->d_inode
!= NULL
)
2147 opendata
->state
= nfs4_get_open_state(dentry
->d_inode
, sp
);
2149 status
= _nfs4_open_and_get_state(opendata
, fmode
, flags
, ctx
);
2151 goto err_free_label
;
2154 if ((opendata
->o_arg
.open_flags
& O_EXCL
) &&
2155 (opendata
->o_arg
.createmode
!= NFS4_CREATE_GUARDED
)) {
2156 nfs4_exclusive_attrset(opendata
, sattr
);
2158 nfs_fattr_init(opendata
->o_res
.f_attr
);
2159 status
= nfs4_do_setattr(state
->inode
, cred
,
2160 opendata
->o_res
.f_attr
, sattr
,
2161 state
, label
, olabel
);
2163 nfs_setattr_update_inode(state
->inode
, sattr
);
2164 nfs_post_op_update_inode(state
->inode
, opendata
->o_res
.f_attr
);
2165 nfs_setsecurity(state
->inode
, opendata
->o_res
.f_attr
, olabel
);
2169 if (pnfs_use_threshold(ctx_th
, opendata
->f_attr
.mdsthreshold
, server
))
2170 *ctx_th
= opendata
->f_attr
.mdsthreshold
;
2172 kfree(opendata
->f_attr
.mdsthreshold
);
2173 opendata
->f_attr
.mdsthreshold
= NULL
;
2175 nfs4_label_free(olabel
);
2177 nfs4_opendata_put(opendata
);
2178 nfs4_put_state_owner(sp
);
2181 nfs4_label_free(olabel
);
2183 kfree(opendata
->f_attr
.mdsthreshold
);
2184 nfs4_opendata_put(opendata
);
2185 err_put_state_owner
:
2186 nfs4_put_state_owner(sp
);
2192 static struct nfs4_state
*nfs4_do_open(struct inode
*dir
,
2193 struct nfs_open_context
*ctx
,
2195 struct iattr
*sattr
,
2196 struct nfs4_label
*label
)
2198 struct nfs_server
*server
= NFS_SERVER(dir
);
2199 struct nfs4_exception exception
= { };
2200 struct nfs4_state
*res
;
2204 status
= _nfs4_do_open(dir
, ctx
, flags
, sattr
, label
);
2206 trace_nfs4_open_file(ctx
, flags
, status
);
2209 /* NOTE: BAD_SEQID means the server and client disagree about the
2210 * book-keeping w.r.t. state-changing operations
2211 * (OPEN/CLOSE/LOCK/LOCKU...)
2212 * It is actually a sign of a bug on the client or on the server.
2214 * If we receive a BAD_SEQID error in the particular case of
2215 * doing an OPEN, we assume that nfs_increment_open_seqid() will
2216 * have unhashed the old state_owner for us, and that we can
2217 * therefore safely retry using a new one. We should still warn
2218 * the user though...
2220 if (status
== -NFS4ERR_BAD_SEQID
) {
2221 pr_warn_ratelimited("NFS: v4 server %s "
2222 " returned a bad sequence-id error!\n",
2223 NFS_SERVER(dir
)->nfs_client
->cl_hostname
);
2224 exception
.retry
= 1;
2228 * BAD_STATEID on OPEN means that the server cancelled our
2229 * state before it received the OPEN_CONFIRM.
2230 * Recover by retrying the request as per the discussion
2231 * on Page 181 of RFC3530.
2233 if (status
== -NFS4ERR_BAD_STATEID
) {
2234 exception
.retry
= 1;
2237 if (status
== -EAGAIN
) {
2238 /* We must have found a delegation */
2239 exception
.retry
= 1;
2242 if (nfs4_clear_cap_atomic_open_v1(server
, status
, &exception
))
2244 res
= ERR_PTR(nfs4_handle_exception(server
,
2245 status
, &exception
));
2246 } while (exception
.retry
);
2250 static int _nfs4_do_setattr(struct inode
*inode
, struct rpc_cred
*cred
,
2251 struct nfs_fattr
*fattr
, struct iattr
*sattr
,
2252 struct nfs4_state
*state
, struct nfs4_label
*ilabel
,
2253 struct nfs4_label
*olabel
)
2255 struct nfs_server
*server
= NFS_SERVER(inode
);
2256 struct nfs_setattrargs arg
= {
2257 .fh
= NFS_FH(inode
),
2260 .bitmask
= server
->attr_bitmask
,
2263 struct nfs_setattrres res
= {
2268 struct rpc_message msg
= {
2269 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETATTR
],
2274 unsigned long timestamp
= jiffies
;
2279 arg
.bitmask
= nfs4_bitmask(server
, ilabel
);
2281 arg
.bitmask
= nfs4_bitmask(server
, olabel
);
2283 nfs_fattr_init(fattr
);
2285 /* Servers should only apply open mode checks for file size changes */
2286 truncate
= (sattr
->ia_valid
& ATTR_SIZE
) ? true : false;
2287 fmode
= truncate
? FMODE_WRITE
: FMODE_READ
;
2289 if (nfs4_copy_delegation_stateid(&arg
.stateid
, inode
, fmode
)) {
2290 /* Use that stateid */
2291 } else if (truncate
&& state
!= NULL
&& nfs4_valid_open_stateid(state
)) {
2292 struct nfs_lockowner lockowner
= {
2293 .l_owner
= current
->files
,
2294 .l_pid
= current
->tgid
,
2296 nfs4_select_rw_stateid(&arg
.stateid
, state
, FMODE_WRITE
,
2299 nfs4_stateid_copy(&arg
.stateid
, &zero_stateid
);
2301 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
2302 if (status
== 0 && state
!= NULL
)
2303 renew_lease(server
, timestamp
);
2307 static int nfs4_do_setattr(struct inode
*inode
, struct rpc_cred
*cred
,
2308 struct nfs_fattr
*fattr
, struct iattr
*sattr
,
2309 struct nfs4_state
*state
, struct nfs4_label
*ilabel
,
2310 struct nfs4_label
*olabel
)
2312 struct nfs_server
*server
= NFS_SERVER(inode
);
2313 struct nfs4_exception exception
= {
2319 err
= _nfs4_do_setattr(inode
, cred
, fattr
, sattr
, state
, ilabel
, olabel
);
2320 trace_nfs4_setattr(inode
, err
);
2322 case -NFS4ERR_OPENMODE
:
2323 if (!(sattr
->ia_valid
& ATTR_SIZE
)) {
2324 pr_warn_once("NFSv4: server %s is incorrectly "
2325 "applying open mode checks to "
2326 "a SETATTR that is not "
2327 "changing file size.\n",
2328 server
->nfs_client
->cl_hostname
);
2330 if (state
&& !(state
->state
& FMODE_WRITE
)) {
2332 if (sattr
->ia_valid
& ATTR_OPEN
)
2337 err
= nfs4_handle_exception(server
, err
, &exception
);
2338 } while (exception
.retry
);
2343 struct nfs4_closedata
{
2344 struct inode
*inode
;
2345 struct nfs4_state
*state
;
2346 struct nfs_closeargs arg
;
2347 struct nfs_closeres res
;
2348 struct nfs_fattr fattr
;
2349 unsigned long timestamp
;
2354 static void nfs4_free_closedata(void *data
)
2356 struct nfs4_closedata
*calldata
= data
;
2357 struct nfs4_state_owner
*sp
= calldata
->state
->owner
;
2358 struct super_block
*sb
= calldata
->state
->inode
->i_sb
;
2361 pnfs_roc_release(calldata
->state
->inode
);
2362 nfs4_put_open_state(calldata
->state
);
2363 nfs_free_seqid(calldata
->arg
.seqid
);
2364 nfs4_put_state_owner(sp
);
2365 nfs_sb_deactive(sb
);
2369 static void nfs4_close_clear_stateid_flags(struct nfs4_state
*state
,
2372 spin_lock(&state
->owner
->so_lock
);
2373 clear_bit(NFS_O_RDWR_STATE
, &state
->flags
);
2374 switch (fmode
& (FMODE_READ
|FMODE_WRITE
)) {
2376 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
2379 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
2382 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
2383 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
2384 clear_bit(NFS_OPEN_STATE
, &state
->flags
);
2386 spin_unlock(&state
->owner
->so_lock
);
2389 static void nfs4_close_done(struct rpc_task
*task
, void *data
)
2391 struct nfs4_closedata
*calldata
= data
;
2392 struct nfs4_state
*state
= calldata
->state
;
2393 struct nfs_server
*server
= NFS_SERVER(calldata
->inode
);
2395 dprintk("%s: begin!\n", __func__
);
2396 if (!nfs4_sequence_done(task
, &calldata
->res
.seq_res
))
2398 trace_nfs4_close(state
, &calldata
->arg
, &calldata
->res
, task
->tk_status
);
2399 /* hmm. we are done with the inode, and in the process of freeing
2400 * the state_owner. we keep this around to process errors
2402 switch (task
->tk_status
) {
2405 pnfs_roc_set_barrier(state
->inode
,
2406 calldata
->roc_barrier
);
2407 nfs_set_open_stateid(state
, &calldata
->res
.stateid
, 0);
2408 renew_lease(server
, calldata
->timestamp
);
2409 nfs4_close_clear_stateid_flags(state
,
2410 calldata
->arg
.fmode
);
2412 case -NFS4ERR_STALE_STATEID
:
2413 case -NFS4ERR_OLD_STATEID
:
2414 case -NFS4ERR_BAD_STATEID
:
2415 case -NFS4ERR_EXPIRED
:
2416 if (calldata
->arg
.fmode
== 0)
2419 if (nfs4_async_handle_error(task
, server
, state
) == -EAGAIN
)
2420 rpc_restart_call_prepare(task
);
2422 nfs_release_seqid(calldata
->arg
.seqid
);
2423 nfs_refresh_inode(calldata
->inode
, calldata
->res
.fattr
);
2424 dprintk("%s: done, ret = %d!\n", __func__
, task
->tk_status
);
2427 static void nfs4_close_prepare(struct rpc_task
*task
, void *data
)
2429 struct nfs4_closedata
*calldata
= data
;
2430 struct nfs4_state
*state
= calldata
->state
;
2431 struct inode
*inode
= calldata
->inode
;
2434 dprintk("%s: begin!\n", __func__
);
2435 if (nfs_wait_on_sequence(calldata
->arg
.seqid
, task
) != 0)
2438 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_DOWNGRADE
];
2439 calldata
->arg
.fmode
= FMODE_READ
|FMODE_WRITE
;
2440 spin_lock(&state
->owner
->so_lock
);
2441 /* Calculate the change in open mode */
2442 if (state
->n_rdwr
== 0) {
2443 if (state
->n_rdonly
== 0) {
2444 call_close
|= test_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
2445 call_close
|= test_bit(NFS_O_RDWR_STATE
, &state
->flags
);
2446 calldata
->arg
.fmode
&= ~FMODE_READ
;
2448 if (state
->n_wronly
== 0) {
2449 call_close
|= test_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
2450 call_close
|= test_bit(NFS_O_RDWR_STATE
, &state
->flags
);
2451 calldata
->arg
.fmode
&= ~FMODE_WRITE
;
2454 if (!nfs4_valid_open_stateid(state
))
2456 spin_unlock(&state
->owner
->so_lock
);
2459 /* Note: exit _without_ calling nfs4_close_done */
2463 if (calldata
->arg
.fmode
== 0) {
2464 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CLOSE
];
2465 if (calldata
->roc
&&
2466 pnfs_roc_drain(inode
, &calldata
->roc_barrier
, task
)) {
2467 nfs_release_seqid(calldata
->arg
.seqid
);
2472 nfs_fattr_init(calldata
->res
.fattr
);
2473 calldata
->timestamp
= jiffies
;
2474 if (nfs4_setup_sequence(NFS_SERVER(inode
),
2475 &calldata
->arg
.seq_args
,
2476 &calldata
->res
.seq_res
,
2478 nfs_release_seqid(calldata
->arg
.seqid
);
2479 dprintk("%s: done!\n", __func__
);
2482 task
->tk_action
= NULL
;
2484 nfs4_sequence_done(task
, &calldata
->res
.seq_res
);
2487 static const struct rpc_call_ops nfs4_close_ops
= {
2488 .rpc_call_prepare
= nfs4_close_prepare
,
2489 .rpc_call_done
= nfs4_close_done
,
2490 .rpc_release
= nfs4_free_closedata
,
2494 * It is possible for data to be read/written from a mem-mapped file
2495 * after the sys_close call (which hits the vfs layer as a flush).
2496 * This means that we can't safely call nfsv4 close on a file until
2497 * the inode is cleared. This in turn means that we are not good
2498 * NFSv4 citizens - we do not indicate to the server to update the file's
2499 * share state even when we are done with one of the three share
2500 * stateid's in the inode.
2502 * NOTE: Caller must be holding the sp->so_owner semaphore!
2504 int nfs4_do_close(struct nfs4_state
*state
, gfp_t gfp_mask
, int wait
)
2506 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
2507 struct nfs4_closedata
*calldata
;
2508 struct nfs4_state_owner
*sp
= state
->owner
;
2509 struct rpc_task
*task
;
2510 struct rpc_message msg
= {
2511 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CLOSE
],
2512 .rpc_cred
= state
->owner
->so_cred
,
2514 struct rpc_task_setup task_setup_data
= {
2515 .rpc_client
= server
->client
,
2516 .rpc_message
= &msg
,
2517 .callback_ops
= &nfs4_close_ops
,
2518 .workqueue
= nfsiod_workqueue
,
2519 .flags
= RPC_TASK_ASYNC
,
2521 int status
= -ENOMEM
;
2523 calldata
= kzalloc(sizeof(*calldata
), gfp_mask
);
2524 if (calldata
== NULL
)
2526 nfs41_init_sequence(&calldata
->arg
.seq_args
, &calldata
->res
.seq_res
, 1);
2527 calldata
->inode
= state
->inode
;
2528 calldata
->state
= state
;
2529 calldata
->arg
.fh
= NFS_FH(state
->inode
);
2530 calldata
->arg
.stateid
= &state
->open_stateid
;
2531 /* Serialization for the sequence id */
2532 calldata
->arg
.seqid
= nfs_alloc_seqid(&state
->owner
->so_seqid
, gfp_mask
);
2533 if (calldata
->arg
.seqid
== NULL
)
2534 goto out_free_calldata
;
2535 calldata
->arg
.fmode
= 0;
2536 calldata
->arg
.bitmask
= server
->cache_consistency_bitmask
;
2537 calldata
->res
.fattr
= &calldata
->fattr
;
2538 calldata
->res
.seqid
= calldata
->arg
.seqid
;
2539 calldata
->res
.server
= server
;
2540 calldata
->roc
= pnfs_roc(state
->inode
);
2541 nfs_sb_active(calldata
->inode
->i_sb
);
2543 msg
.rpc_argp
= &calldata
->arg
;
2544 msg
.rpc_resp
= &calldata
->res
;
2545 task_setup_data
.callback_data
= calldata
;
2546 task
= rpc_run_task(&task_setup_data
);
2548 return PTR_ERR(task
);
2551 status
= rpc_wait_for_completion_task(task
);
2557 nfs4_put_open_state(state
);
2558 nfs4_put_state_owner(sp
);
2562 static struct inode
*
2563 nfs4_atomic_open(struct inode
*dir
, struct nfs_open_context
*ctx
, int open_flags
, struct iattr
*attr
)
2565 struct nfs4_state
*state
;
2566 struct nfs4_label l
= {0, 0, 0, NULL
}, *label
= NULL
;
2568 label
= nfs4_label_init_security(dir
, ctx
->dentry
, attr
, &l
);
2570 /* Protect against concurrent sillydeletes */
2571 state
= nfs4_do_open(dir
, ctx
, open_flags
, attr
, label
);
2573 nfs4_label_release_security(label
);
2576 return ERR_CAST(state
);
2577 return state
->inode
;
2580 static void nfs4_close_context(struct nfs_open_context
*ctx
, int is_sync
)
2582 if (ctx
->state
== NULL
)
2585 nfs4_close_sync(ctx
->state
, ctx
->mode
);
2587 nfs4_close_state(ctx
->state
, ctx
->mode
);
2590 static int _nfs4_server_capabilities(struct nfs_server
*server
, struct nfs_fh
*fhandle
)
2592 struct nfs4_server_caps_arg args
= {
2595 struct nfs4_server_caps_res res
= {};
2596 struct rpc_message msg
= {
2597 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SERVER_CAPS
],
2603 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2605 memcpy(server
->attr_bitmask
, res
.attr_bitmask
, sizeof(server
->attr_bitmask
));
2606 server
->caps
&= ~(NFS_CAP_ACLS
|NFS_CAP_HARDLINKS
|
2607 NFS_CAP_SYMLINKS
|NFS_CAP_FILEID
|
2608 NFS_CAP_MODE
|NFS_CAP_NLINK
|NFS_CAP_OWNER
|
2609 NFS_CAP_OWNER_GROUP
|NFS_CAP_ATIME
|
2610 NFS_CAP_CTIME
|NFS_CAP_MTIME
);
2611 if (res
.attr_bitmask
[0] & FATTR4_WORD0_ACL
)
2612 server
->caps
|= NFS_CAP_ACLS
;
2613 if (res
.has_links
!= 0)
2614 server
->caps
|= NFS_CAP_HARDLINKS
;
2615 if (res
.has_symlinks
!= 0)
2616 server
->caps
|= NFS_CAP_SYMLINKS
;
2617 if (res
.attr_bitmask
[0] & FATTR4_WORD0_FILEID
)
2618 server
->caps
|= NFS_CAP_FILEID
;
2619 if (res
.attr_bitmask
[1] & FATTR4_WORD1_MODE
)
2620 server
->caps
|= NFS_CAP_MODE
;
2621 if (res
.attr_bitmask
[1] & FATTR4_WORD1_NUMLINKS
)
2622 server
->caps
|= NFS_CAP_NLINK
;
2623 if (res
.attr_bitmask
[1] & FATTR4_WORD1_OWNER
)
2624 server
->caps
|= NFS_CAP_OWNER
;
2625 if (res
.attr_bitmask
[1] & FATTR4_WORD1_OWNER_GROUP
)
2626 server
->caps
|= NFS_CAP_OWNER_GROUP
;
2627 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_ACCESS
)
2628 server
->caps
|= NFS_CAP_ATIME
;
2629 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_METADATA
)
2630 server
->caps
|= NFS_CAP_CTIME
;
2631 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_MODIFY
)
2632 server
->caps
|= NFS_CAP_MTIME
;
2633 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
2634 if (res
.attr_bitmask
[2] & FATTR4_WORD2_SECURITY_LABEL
)
2635 server
->caps
|= NFS_CAP_SECURITY_LABEL
;
2637 memcpy(server
->attr_bitmask_nl
, res
.attr_bitmask
,
2638 sizeof(server
->attr_bitmask
));
2640 if (server
->caps
& NFS_CAP_SECURITY_LABEL
) {
2641 server
->attr_bitmask_nl
[2] &= ~FATTR4_WORD2_SECURITY_LABEL
;
2642 res
.attr_bitmask
[2] &= ~FATTR4_WORD2_SECURITY_LABEL
;
2644 memcpy(server
->cache_consistency_bitmask
, res
.attr_bitmask
, sizeof(server
->cache_consistency_bitmask
));
2645 server
->cache_consistency_bitmask
[0] &= FATTR4_WORD0_CHANGE
|FATTR4_WORD0_SIZE
;
2646 server
->cache_consistency_bitmask
[1] &= FATTR4_WORD1_TIME_METADATA
|FATTR4_WORD1_TIME_MODIFY
;
2647 server
->acl_bitmask
= res
.acl_bitmask
;
2648 server
->fh_expire_type
= res
.fh_expire_type
;
2654 int nfs4_server_capabilities(struct nfs_server
*server
, struct nfs_fh
*fhandle
)
2656 struct nfs4_exception exception
= { };
2659 err
= nfs4_handle_exception(server
,
2660 _nfs4_server_capabilities(server
, fhandle
),
2662 } while (exception
.retry
);
2666 static int _nfs4_lookup_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2667 struct nfs_fsinfo
*info
)
2670 struct nfs4_lookup_root_arg args
= {
2673 struct nfs4_lookup_res res
= {
2675 .fattr
= info
->fattr
,
2678 struct rpc_message msg
= {
2679 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOOKUP_ROOT
],
2684 bitmask
[0] = nfs4_fattr_bitmap
[0];
2685 bitmask
[1] = nfs4_fattr_bitmap
[1];
2687 * Process the label in the upcoming getfattr
2689 bitmask
[2] = nfs4_fattr_bitmap
[2] & ~FATTR4_WORD2_SECURITY_LABEL
;
2691 nfs_fattr_init(info
->fattr
);
2692 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2695 static int nfs4_lookup_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2696 struct nfs_fsinfo
*info
)
2698 struct nfs4_exception exception
= { };
2701 err
= _nfs4_lookup_root(server
, fhandle
, info
);
2702 trace_nfs4_lookup_root(server
, fhandle
, info
->fattr
, err
);
2705 case -NFS4ERR_WRONGSEC
:
2708 err
= nfs4_handle_exception(server
, err
, &exception
);
2710 } while (exception
.retry
);
2715 static int nfs4_lookup_root_sec(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2716 struct nfs_fsinfo
*info
, rpc_authflavor_t flavor
)
2718 struct rpc_auth
*auth
;
2721 auth
= rpcauth_create(flavor
, server
->client
);
2726 ret
= nfs4_lookup_root(server
, fhandle
, info
);
2732 * Retry pseudoroot lookup with various security flavors. We do this when:
2734 * NFSv4.0: the PUTROOTFH operation returns NFS4ERR_WRONGSEC
2735 * NFSv4.1: the server does not support the SECINFO_NO_NAME operation
2737 * Returns zero on success, or a negative NFS4ERR value, or a
2738 * negative errno value.
2740 static int nfs4_find_root_sec(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2741 struct nfs_fsinfo
*info
)
2743 /* Per 3530bis 15.33.5 */
2744 static const rpc_authflavor_t flav_array
[] = {
2748 RPC_AUTH_UNIX
, /* courtesy */
2751 int status
= -EPERM
;
2754 for (i
= 0; i
< ARRAY_SIZE(flav_array
); i
++) {
2755 status
= nfs4_lookup_root_sec(server
, fhandle
, info
, flav_array
[i
]);
2756 if (status
== -NFS4ERR_WRONGSEC
|| status
== -EACCES
)
2762 * -EACCESS could mean that the user doesn't have correct permissions
2763 * to access the mount. It could also mean that we tried to mount
2764 * with a gss auth flavor, but rpc.gssd isn't running. Either way,
2765 * existing mount programs don't handle -EACCES very well so it should
2766 * be mapped to -EPERM instead.
2768 if (status
== -EACCES
)
2773 static int nfs4_do_find_root_sec(struct nfs_server
*server
,
2774 struct nfs_fh
*fhandle
, struct nfs_fsinfo
*info
)
2776 int mv
= server
->nfs_client
->cl_minorversion
;
2777 return nfs_v4_minor_ops
[mv
]->find_root_sec(server
, fhandle
, info
);
2781 * nfs4_proc_get_rootfh - get file handle for server's pseudoroot
2782 * @server: initialized nfs_server handle
2783 * @fhandle: we fill in the pseudo-fs root file handle
2784 * @info: we fill in an FSINFO struct
2786 * Returns zero on success, or a negative errno.
2788 int nfs4_proc_get_rootfh(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2789 struct nfs_fsinfo
*info
)
2793 status
= nfs4_lookup_root(server
, fhandle
, info
);
2794 if ((status
== -NFS4ERR_WRONGSEC
) &&
2795 !(server
->flags
& NFS_MOUNT_SECFLAVOUR
))
2796 status
= nfs4_do_find_root_sec(server
, fhandle
, info
);
2799 status
= nfs4_server_capabilities(server
, fhandle
);
2801 status
= nfs4_do_fsinfo(server
, fhandle
, info
);
2803 return nfs4_map_errors(status
);
2806 static int nfs4_proc_get_root(struct nfs_server
*server
, struct nfs_fh
*mntfh
,
2807 struct nfs_fsinfo
*info
)
2810 struct nfs_fattr
*fattr
= info
->fattr
;
2811 struct nfs4_label
*label
= NULL
;
2813 error
= nfs4_server_capabilities(server
, mntfh
);
2815 dprintk("nfs4_get_root: getcaps error = %d\n", -error
);
2819 label
= nfs4_label_alloc(server
, GFP_KERNEL
);
2821 return PTR_ERR(label
);
2823 error
= nfs4_proc_getattr(server
, mntfh
, fattr
, label
);
2825 dprintk("nfs4_get_root: getattr error = %d\n", -error
);
2826 goto err_free_label
;
2829 if (fattr
->valid
& NFS_ATTR_FATTR_FSID
&&
2830 !nfs_fsid_equal(&server
->fsid
, &fattr
->fsid
))
2831 memcpy(&server
->fsid
, &fattr
->fsid
, sizeof(server
->fsid
));
2834 nfs4_label_free(label
);
2840 * Get locations and (maybe) other attributes of a referral.
2841 * Note that we'll actually follow the referral later when
2842 * we detect fsid mismatch in inode revalidation
2844 static int nfs4_get_referral(struct rpc_clnt
*client
, struct inode
*dir
,
2845 const struct qstr
*name
, struct nfs_fattr
*fattr
,
2846 struct nfs_fh
*fhandle
)
2848 int status
= -ENOMEM
;
2849 struct page
*page
= NULL
;
2850 struct nfs4_fs_locations
*locations
= NULL
;
2852 page
= alloc_page(GFP_KERNEL
);
2855 locations
= kmalloc(sizeof(struct nfs4_fs_locations
), GFP_KERNEL
);
2856 if (locations
== NULL
)
2859 status
= nfs4_proc_fs_locations(client
, dir
, name
, locations
, page
);
2862 /* Make sure server returned a different fsid for the referral */
2863 if (nfs_fsid_equal(&NFS_SERVER(dir
)->fsid
, &locations
->fattr
.fsid
)) {
2864 dprintk("%s: server did not return a different fsid for"
2865 " a referral at %s\n", __func__
, name
->name
);
2869 /* Fixup attributes for the nfs_lookup() call to nfs_fhget() */
2870 nfs_fixup_referral_attributes(&locations
->fattr
);
2872 /* replace the lookup nfs_fattr with the locations nfs_fattr */
2873 memcpy(fattr
, &locations
->fattr
, sizeof(struct nfs_fattr
));
2874 memset(fhandle
, 0, sizeof(struct nfs_fh
));
2882 static int _nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2883 struct nfs_fattr
*fattr
, struct nfs4_label
*label
)
2885 struct nfs4_getattr_arg args
= {
2887 .bitmask
= server
->attr_bitmask
,
2889 struct nfs4_getattr_res res
= {
2894 struct rpc_message msg
= {
2895 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETATTR
],
2900 args
.bitmask
= nfs4_bitmask(server
, label
);
2902 nfs_fattr_init(fattr
);
2903 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2906 static int nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2907 struct nfs_fattr
*fattr
, struct nfs4_label
*label
)
2909 struct nfs4_exception exception
= { };
2912 err
= _nfs4_proc_getattr(server
, fhandle
, fattr
, label
);
2913 trace_nfs4_getattr(server
, fhandle
, fattr
, err
);
2914 err
= nfs4_handle_exception(server
, err
,
2916 } while (exception
.retry
);
2921 * The file is not closed if it is opened due to the a request to change
2922 * the size of the file. The open call will not be needed once the
2923 * VFS layer lookup-intents are implemented.
2925 * Close is called when the inode is destroyed.
2926 * If we haven't opened the file for O_WRONLY, we
2927 * need to in the size_change case to obtain a stateid.
2930 * Because OPEN is always done by name in nfsv4, it is
2931 * possible that we opened a different file by the same
2932 * name. We can recognize this race condition, but we
2933 * can't do anything about it besides returning an error.
2935 * This will be fixed with VFS changes (lookup-intent).
2938 nfs4_proc_setattr(struct dentry
*dentry
, struct nfs_fattr
*fattr
,
2939 struct iattr
*sattr
)
2941 struct inode
*inode
= dentry
->d_inode
;
2942 struct rpc_cred
*cred
= NULL
;
2943 struct nfs4_state
*state
= NULL
;
2944 struct nfs4_label
*label
= NULL
;
2947 if (pnfs_ld_layoutret_on_setattr(inode
))
2948 pnfs_commit_and_return_layout(inode
);
2950 nfs_fattr_init(fattr
);
2952 /* Deal with open(O_TRUNC) */
2953 if (sattr
->ia_valid
& ATTR_OPEN
)
2954 sattr
->ia_valid
&= ~(ATTR_MTIME
|ATTR_CTIME
);
2956 /* Optimization: if the end result is no change, don't RPC */
2957 if ((sattr
->ia_valid
& ~(ATTR_FILE
|ATTR_OPEN
)) == 0)
2960 /* Search for an existing open(O_WRITE) file */
2961 if (sattr
->ia_valid
& ATTR_FILE
) {
2962 struct nfs_open_context
*ctx
;
2964 ctx
= nfs_file_open_context(sattr
->ia_file
);
2971 label
= nfs4_label_alloc(NFS_SERVER(inode
), GFP_KERNEL
);
2973 return PTR_ERR(label
);
2975 status
= nfs4_do_setattr(inode
, cred
, fattr
, sattr
, state
, NULL
, label
);
2977 nfs_setattr_update_inode(inode
, sattr
);
2978 nfs_setsecurity(inode
, fattr
, label
);
2980 nfs4_label_free(label
);
2984 static int _nfs4_proc_lookup(struct rpc_clnt
*clnt
, struct inode
*dir
,
2985 const struct qstr
*name
, struct nfs_fh
*fhandle
,
2986 struct nfs_fattr
*fattr
, struct nfs4_label
*label
)
2988 struct nfs_server
*server
= NFS_SERVER(dir
);
2990 struct nfs4_lookup_arg args
= {
2991 .bitmask
= server
->attr_bitmask
,
2992 .dir_fh
= NFS_FH(dir
),
2995 struct nfs4_lookup_res res
= {
3001 struct rpc_message msg
= {
3002 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOOKUP
],
3007 args
.bitmask
= nfs4_bitmask(server
, label
);
3009 nfs_fattr_init(fattr
);
3011 dprintk("NFS call lookup %s\n", name
->name
);
3012 status
= nfs4_call_sync(clnt
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3013 dprintk("NFS reply lookup: %d\n", status
);
3017 static void nfs_fixup_secinfo_attributes(struct nfs_fattr
*fattr
)
3019 fattr
->valid
|= NFS_ATTR_FATTR_TYPE
| NFS_ATTR_FATTR_MODE
|
3020 NFS_ATTR_FATTR_NLINK
| NFS_ATTR_FATTR_MOUNTPOINT
;
3021 fattr
->mode
= S_IFDIR
| S_IRUGO
| S_IXUGO
;
3025 static int nfs4_proc_lookup_common(struct rpc_clnt
**clnt
, struct inode
*dir
,
3026 struct qstr
*name
, struct nfs_fh
*fhandle
,
3027 struct nfs_fattr
*fattr
, struct nfs4_label
*label
)
3029 struct nfs4_exception exception
= { };
3030 struct rpc_clnt
*client
= *clnt
;
3033 err
= _nfs4_proc_lookup(client
, dir
, name
, fhandle
, fattr
, label
);
3034 trace_nfs4_lookup(dir
, name
, err
);
3036 case -NFS4ERR_BADNAME
:
3039 case -NFS4ERR_MOVED
:
3040 err
= nfs4_get_referral(client
, dir
, name
, fattr
, fhandle
);
3042 case -NFS4ERR_WRONGSEC
:
3044 if (client
!= *clnt
)
3047 client
= nfs4_create_sec_client(client
, dir
, name
);
3049 return PTR_ERR(client
);
3051 exception
.retry
= 1;
3054 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
, &exception
);
3056 } while (exception
.retry
);
3061 else if (client
!= *clnt
)
3062 rpc_shutdown_client(client
);
3067 static int nfs4_proc_lookup(struct inode
*dir
, struct qstr
*name
,
3068 struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
,
3069 struct nfs4_label
*label
)
3072 struct rpc_clnt
*client
= NFS_CLIENT(dir
);
3074 status
= nfs4_proc_lookup_common(&client
, dir
, name
, fhandle
, fattr
, label
);
3075 if (client
!= NFS_CLIENT(dir
)) {
3076 rpc_shutdown_client(client
);
3077 nfs_fixup_secinfo_attributes(fattr
);
3083 nfs4_proc_lookup_mountpoint(struct inode
*dir
, struct qstr
*name
,
3084 struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
3087 struct rpc_clnt
*client
= rpc_clone_client(NFS_CLIENT(dir
));
3089 status
= nfs4_proc_lookup_common(&client
, dir
, name
, fhandle
, fattr
, NULL
);
3091 rpc_shutdown_client(client
);
3092 return ERR_PTR(status
);
3097 static int _nfs4_proc_access(struct inode
*inode
, struct nfs_access_entry
*entry
)
3099 struct nfs_server
*server
= NFS_SERVER(inode
);
3100 struct nfs4_accessargs args
= {
3101 .fh
= NFS_FH(inode
),
3102 .bitmask
= server
->cache_consistency_bitmask
,
3104 struct nfs4_accessres res
= {
3107 struct rpc_message msg
= {
3108 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_ACCESS
],
3111 .rpc_cred
= entry
->cred
,
3113 int mode
= entry
->mask
;
3117 * Determine which access bits we want to ask for...
3119 if (mode
& MAY_READ
)
3120 args
.access
|= NFS4_ACCESS_READ
;
3121 if (S_ISDIR(inode
->i_mode
)) {
3122 if (mode
& MAY_WRITE
)
3123 args
.access
|= NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
| NFS4_ACCESS_DELETE
;
3124 if (mode
& MAY_EXEC
)
3125 args
.access
|= NFS4_ACCESS_LOOKUP
;
3127 if (mode
& MAY_WRITE
)
3128 args
.access
|= NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
;
3129 if (mode
& MAY_EXEC
)
3130 args
.access
|= NFS4_ACCESS_EXECUTE
;
3133 res
.fattr
= nfs_alloc_fattr();
3134 if (res
.fattr
== NULL
)
3137 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3139 nfs_access_set_mask(entry
, res
.access
);
3140 nfs_refresh_inode(inode
, res
.fattr
);
3142 nfs_free_fattr(res
.fattr
);
3146 static int nfs4_proc_access(struct inode
*inode
, struct nfs_access_entry
*entry
)
3148 struct nfs4_exception exception
= { };
3151 err
= _nfs4_proc_access(inode
, entry
);
3152 trace_nfs4_access(inode
, err
);
3153 err
= nfs4_handle_exception(NFS_SERVER(inode
), err
,
3155 } while (exception
.retry
);
3160 * TODO: For the time being, we don't try to get any attributes
3161 * along with any of the zero-copy operations READ, READDIR,
3164 * In the case of the first three, we want to put the GETATTR
3165 * after the read-type operation -- this is because it is hard
3166 * to predict the length of a GETATTR response in v4, and thus
3167 * align the READ data correctly. This means that the GETATTR
3168 * may end up partially falling into the page cache, and we should
3169 * shift it into the 'tail' of the xdr_buf before processing.
3170 * To do this efficiently, we need to know the total length
3171 * of data received, which doesn't seem to be available outside
3174 * In the case of WRITE, we also want to put the GETATTR after
3175 * the operation -- in this case because we want to make sure
3176 * we get the post-operation mtime and size.
3178 * Both of these changes to the XDR layer would in fact be quite
3179 * minor, but I decided to leave them for a subsequent patch.
3181 static int _nfs4_proc_readlink(struct inode
*inode
, struct page
*page
,
3182 unsigned int pgbase
, unsigned int pglen
)
3184 struct nfs4_readlink args
= {
3185 .fh
= NFS_FH(inode
),
3190 struct nfs4_readlink_res res
;
3191 struct rpc_message msg
= {
3192 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READLINK
],
3197 return nfs4_call_sync(NFS_SERVER(inode
)->client
, NFS_SERVER(inode
), &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3200 static int nfs4_proc_readlink(struct inode
*inode
, struct page
*page
,
3201 unsigned int pgbase
, unsigned int pglen
)
3203 struct nfs4_exception exception
= { };
3206 err
= _nfs4_proc_readlink(inode
, page
, pgbase
, pglen
);
3207 trace_nfs4_readlink(inode
, err
);
3208 err
= nfs4_handle_exception(NFS_SERVER(inode
), err
,
3210 } while (exception
.retry
);
3215 * This is just for mknod. open(O_CREAT) will always do ->open_context().
3218 nfs4_proc_create(struct inode
*dir
, struct dentry
*dentry
, struct iattr
*sattr
,
3221 struct nfs4_label l
, *ilabel
= NULL
;
3222 struct nfs_open_context
*ctx
;
3223 struct nfs4_state
*state
;
3226 ctx
= alloc_nfs_open_context(dentry
, FMODE_READ
);
3228 return PTR_ERR(ctx
);
3230 ilabel
= nfs4_label_init_security(dir
, dentry
, sattr
, &l
);
3232 sattr
->ia_mode
&= ~current_umask();
3233 state
= nfs4_do_open(dir
, ctx
, flags
, sattr
, ilabel
);
3234 if (IS_ERR(state
)) {
3235 status
= PTR_ERR(state
);
3239 nfs4_label_release_security(ilabel
);
3240 put_nfs_open_context(ctx
);
3244 static int _nfs4_proc_remove(struct inode
*dir
, struct qstr
*name
)
3246 struct nfs_server
*server
= NFS_SERVER(dir
);
3247 struct nfs_removeargs args
= {
3251 struct nfs_removeres res
= {
3254 struct rpc_message msg
= {
3255 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_REMOVE
],
3261 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 1);
3263 update_changeattr(dir
, &res
.cinfo
);
3267 static int nfs4_proc_remove(struct inode
*dir
, struct qstr
*name
)
3269 struct nfs4_exception exception
= { };
3272 err
= _nfs4_proc_remove(dir
, name
);
3273 trace_nfs4_remove(dir
, name
, err
);
3274 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
3276 } while (exception
.retry
);
3280 static void nfs4_proc_unlink_setup(struct rpc_message
*msg
, struct inode
*dir
)
3282 struct nfs_server
*server
= NFS_SERVER(dir
);
3283 struct nfs_removeargs
*args
= msg
->rpc_argp
;
3284 struct nfs_removeres
*res
= msg
->rpc_resp
;
3286 res
->server
= server
;
3287 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_REMOVE
];
3288 nfs41_init_sequence(&args
->seq_args
, &res
->seq_res
, 1);
3290 nfs_fattr_init(res
->dir_attr
);
3293 static void nfs4_proc_unlink_rpc_prepare(struct rpc_task
*task
, struct nfs_unlinkdata
*data
)
3295 nfs4_setup_sequence(NFS_SERVER(data
->dir
),
3296 &data
->args
.seq_args
,
3301 static int nfs4_proc_unlink_done(struct rpc_task
*task
, struct inode
*dir
)
3303 struct nfs_unlinkdata
*data
= task
->tk_calldata
;
3304 struct nfs_removeres
*res
= &data
->res
;
3306 if (!nfs4_sequence_done(task
, &res
->seq_res
))
3308 if (nfs4_async_handle_error(task
, res
->server
, NULL
) == -EAGAIN
)
3310 update_changeattr(dir
, &res
->cinfo
);
3314 static void nfs4_proc_rename_setup(struct rpc_message
*msg
, struct inode
*dir
)
3316 struct nfs_server
*server
= NFS_SERVER(dir
);
3317 struct nfs_renameargs
*arg
= msg
->rpc_argp
;
3318 struct nfs_renameres
*res
= msg
->rpc_resp
;
3320 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENAME
];
3321 res
->server
= server
;
3322 nfs41_init_sequence(&arg
->seq_args
, &res
->seq_res
, 1);
3325 static void nfs4_proc_rename_rpc_prepare(struct rpc_task
*task
, struct nfs_renamedata
*data
)
3327 nfs4_setup_sequence(NFS_SERVER(data
->old_dir
),
3328 &data
->args
.seq_args
,
3333 static int nfs4_proc_rename_done(struct rpc_task
*task
, struct inode
*old_dir
,
3334 struct inode
*new_dir
)
3336 struct nfs_renamedata
*data
= task
->tk_calldata
;
3337 struct nfs_renameres
*res
= &data
->res
;
3339 if (!nfs4_sequence_done(task
, &res
->seq_res
))
3341 if (nfs4_async_handle_error(task
, res
->server
, NULL
) == -EAGAIN
)
3344 update_changeattr(old_dir
, &res
->old_cinfo
);
3345 update_changeattr(new_dir
, &res
->new_cinfo
);
3349 static int _nfs4_proc_rename(struct inode
*old_dir
, struct qstr
*old_name
,
3350 struct inode
*new_dir
, struct qstr
*new_name
)
3352 struct nfs_server
*server
= NFS_SERVER(old_dir
);
3353 struct nfs_renameargs arg
= {
3354 .old_dir
= NFS_FH(old_dir
),
3355 .new_dir
= NFS_FH(new_dir
),
3356 .old_name
= old_name
,
3357 .new_name
= new_name
,
3359 struct nfs_renameres res
= {
3362 struct rpc_message msg
= {
3363 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENAME
],
3367 int status
= -ENOMEM
;
3369 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
3371 update_changeattr(old_dir
, &res
.old_cinfo
);
3372 update_changeattr(new_dir
, &res
.new_cinfo
);
3377 static int nfs4_proc_rename(struct inode
*old_dir
, struct qstr
*old_name
,
3378 struct inode
*new_dir
, struct qstr
*new_name
)
3380 struct nfs4_exception exception
= { };
3383 err
= _nfs4_proc_rename(old_dir
, old_name
,
3385 trace_nfs4_rename(old_dir
, old_name
, new_dir
, new_name
, err
);
3386 err
= nfs4_handle_exception(NFS_SERVER(old_dir
), err
,
3388 } while (exception
.retry
);
3392 static int _nfs4_proc_link(struct inode
*inode
, struct inode
*dir
, struct qstr
*name
)
3394 struct nfs_server
*server
= NFS_SERVER(inode
);
3395 struct nfs4_link_arg arg
= {
3396 .fh
= NFS_FH(inode
),
3397 .dir_fh
= NFS_FH(dir
),
3399 .bitmask
= server
->attr_bitmask
,
3401 struct nfs4_link_res res
= {
3405 struct rpc_message msg
= {
3406 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LINK
],
3410 int status
= -ENOMEM
;
3412 res
.fattr
= nfs_alloc_fattr();
3413 if (res
.fattr
== NULL
)
3416 res
.label
= nfs4_label_alloc(server
, GFP_KERNEL
);
3417 if (IS_ERR(res
.label
)) {
3418 status
= PTR_ERR(res
.label
);
3421 arg
.bitmask
= nfs4_bitmask(server
, res
.label
);
3423 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
3425 update_changeattr(dir
, &res
.cinfo
);
3426 status
= nfs_post_op_update_inode(inode
, res
.fattr
);
3428 nfs_setsecurity(inode
, res
.fattr
, res
.label
);
3432 nfs4_label_free(res
.label
);
3435 nfs_free_fattr(res
.fattr
);
3439 static int nfs4_proc_link(struct inode
*inode
, struct inode
*dir
, struct qstr
*name
)
3441 struct nfs4_exception exception
= { };
3444 err
= nfs4_handle_exception(NFS_SERVER(inode
),
3445 _nfs4_proc_link(inode
, dir
, name
),
3447 } while (exception
.retry
);
3451 struct nfs4_createdata
{
3452 struct rpc_message msg
;
3453 struct nfs4_create_arg arg
;
3454 struct nfs4_create_res res
;
3456 struct nfs_fattr fattr
;
3457 struct nfs4_label
*label
;
3460 static struct nfs4_createdata
*nfs4_alloc_createdata(struct inode
*dir
,
3461 struct qstr
*name
, struct iattr
*sattr
, u32 ftype
)
3463 struct nfs4_createdata
*data
;
3465 data
= kzalloc(sizeof(*data
), GFP_KERNEL
);
3467 struct nfs_server
*server
= NFS_SERVER(dir
);
3469 data
->label
= nfs4_label_alloc(server
, GFP_KERNEL
);
3470 if (IS_ERR(data
->label
))
3473 data
->msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CREATE
];
3474 data
->msg
.rpc_argp
= &data
->arg
;
3475 data
->msg
.rpc_resp
= &data
->res
;
3476 data
->arg
.dir_fh
= NFS_FH(dir
);
3477 data
->arg
.server
= server
;
3478 data
->arg
.name
= name
;
3479 data
->arg
.attrs
= sattr
;
3480 data
->arg
.ftype
= ftype
;
3481 data
->arg
.bitmask
= nfs4_bitmask(server
, data
->label
);
3482 data
->res
.server
= server
;
3483 data
->res
.fh
= &data
->fh
;
3484 data
->res
.fattr
= &data
->fattr
;
3485 data
->res
.label
= data
->label
;
3486 nfs_fattr_init(data
->res
.fattr
);
3494 static int nfs4_do_create(struct inode
*dir
, struct dentry
*dentry
, struct nfs4_createdata
*data
)
3496 int status
= nfs4_call_sync(NFS_SERVER(dir
)->client
, NFS_SERVER(dir
), &data
->msg
,
3497 &data
->arg
.seq_args
, &data
->res
.seq_res
, 1);
3499 update_changeattr(dir
, &data
->res
.dir_cinfo
);
3500 status
= nfs_instantiate(dentry
, data
->res
.fh
, data
->res
.fattr
, data
->res
.label
);
3505 static void nfs4_free_createdata(struct nfs4_createdata
*data
)
3507 nfs4_label_free(data
->label
);
3511 static int _nfs4_proc_symlink(struct inode
*dir
, struct dentry
*dentry
,
3512 struct page
*page
, unsigned int len
, struct iattr
*sattr
,
3513 struct nfs4_label
*label
)
3515 struct nfs4_createdata
*data
;
3516 int status
= -ENAMETOOLONG
;
3518 if (len
> NFS4_MAXPATHLEN
)
3522 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4LNK
);
3526 data
->msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SYMLINK
];
3527 data
->arg
.u
.symlink
.pages
= &page
;
3528 data
->arg
.u
.symlink
.len
= len
;
3529 data
->arg
.label
= label
;
3531 status
= nfs4_do_create(dir
, dentry
, data
);
3533 nfs4_free_createdata(data
);
3538 static int nfs4_proc_symlink(struct inode
*dir
, struct dentry
*dentry
,
3539 struct page
*page
, unsigned int len
, struct iattr
*sattr
)
3541 struct nfs4_exception exception
= { };
3542 struct nfs4_label l
, *label
= NULL
;
3545 label
= nfs4_label_init_security(dir
, dentry
, sattr
, &l
);
3548 err
= _nfs4_proc_symlink(dir
, dentry
, page
, len
, sattr
, label
);
3549 trace_nfs4_symlink(dir
, &dentry
->d_name
, err
);
3550 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
3552 } while (exception
.retry
);
3554 nfs4_label_release_security(label
);
3558 static int _nfs4_proc_mkdir(struct inode
*dir
, struct dentry
*dentry
,
3559 struct iattr
*sattr
, struct nfs4_label
*label
)
3561 struct nfs4_createdata
*data
;
3562 int status
= -ENOMEM
;
3564 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4DIR
);
3568 data
->arg
.label
= label
;
3569 status
= nfs4_do_create(dir
, dentry
, data
);
3571 nfs4_free_createdata(data
);
3576 static int nfs4_proc_mkdir(struct inode
*dir
, struct dentry
*dentry
,
3577 struct iattr
*sattr
)
3579 struct nfs4_exception exception
= { };
3580 struct nfs4_label l
, *label
= NULL
;
3583 label
= nfs4_label_init_security(dir
, dentry
, sattr
, &l
);
3585 sattr
->ia_mode
&= ~current_umask();
3587 err
= _nfs4_proc_mkdir(dir
, dentry
, sattr
, label
);
3588 trace_nfs4_mkdir(dir
, &dentry
->d_name
, err
);
3589 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
3591 } while (exception
.retry
);
3592 nfs4_label_release_security(label
);
3597 static int _nfs4_proc_readdir(struct dentry
*dentry
, struct rpc_cred
*cred
,
3598 u64 cookie
, struct page
**pages
, unsigned int count
, int plus
)
3600 struct inode
*dir
= dentry
->d_inode
;
3601 struct nfs4_readdir_arg args
= {
3606 .bitmask
= NFS_SERVER(dentry
->d_inode
)->attr_bitmask
,
3609 struct nfs4_readdir_res res
;
3610 struct rpc_message msg
= {
3611 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READDIR
],
3618 dprintk("%s: dentry = %s/%s, cookie = %Lu\n", __func__
,
3619 dentry
->d_parent
->d_name
.name
,
3620 dentry
->d_name
.name
,
3621 (unsigned long long)cookie
);
3622 nfs4_setup_readdir(cookie
, NFS_I(dir
)->cookieverf
, dentry
, &args
);
3623 res
.pgbase
= args
.pgbase
;
3624 status
= nfs4_call_sync(NFS_SERVER(dir
)->client
, NFS_SERVER(dir
), &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3626 memcpy(NFS_I(dir
)->cookieverf
, res
.verifier
.data
, NFS4_VERIFIER_SIZE
);
3627 status
+= args
.pgbase
;
3630 nfs_invalidate_atime(dir
);
3632 dprintk("%s: returns %d\n", __func__
, status
);
3636 static int nfs4_proc_readdir(struct dentry
*dentry
, struct rpc_cred
*cred
,
3637 u64 cookie
, struct page
**pages
, unsigned int count
, int plus
)
3639 struct nfs4_exception exception
= { };
3642 err
= _nfs4_proc_readdir(dentry
, cred
, cookie
,
3643 pages
, count
, plus
);
3644 trace_nfs4_readdir(dentry
->d_inode
, err
);
3645 err
= nfs4_handle_exception(NFS_SERVER(dentry
->d_inode
), err
,
3647 } while (exception
.retry
);
3651 static int _nfs4_proc_mknod(struct inode
*dir
, struct dentry
*dentry
,
3652 struct iattr
*sattr
, struct nfs4_label
*label
, dev_t rdev
)
3654 struct nfs4_createdata
*data
;
3655 int mode
= sattr
->ia_mode
;
3656 int status
= -ENOMEM
;
3658 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4SOCK
);
3663 data
->arg
.ftype
= NF4FIFO
;
3664 else if (S_ISBLK(mode
)) {
3665 data
->arg
.ftype
= NF4BLK
;
3666 data
->arg
.u
.device
.specdata1
= MAJOR(rdev
);
3667 data
->arg
.u
.device
.specdata2
= MINOR(rdev
);
3669 else if (S_ISCHR(mode
)) {
3670 data
->arg
.ftype
= NF4CHR
;
3671 data
->arg
.u
.device
.specdata1
= MAJOR(rdev
);
3672 data
->arg
.u
.device
.specdata2
= MINOR(rdev
);
3673 } else if (!S_ISSOCK(mode
)) {
3678 data
->arg
.label
= label
;
3679 status
= nfs4_do_create(dir
, dentry
, data
);
3681 nfs4_free_createdata(data
);
3686 static int nfs4_proc_mknod(struct inode
*dir
, struct dentry
*dentry
,
3687 struct iattr
*sattr
, dev_t rdev
)
3689 struct nfs4_exception exception
= { };
3690 struct nfs4_label l
, *label
= NULL
;
3693 label
= nfs4_label_init_security(dir
, dentry
, sattr
, &l
);
3695 sattr
->ia_mode
&= ~current_umask();
3697 err
= _nfs4_proc_mknod(dir
, dentry
, sattr
, label
, rdev
);
3698 trace_nfs4_mknod(dir
, &dentry
->d_name
, err
);
3699 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
3701 } while (exception
.retry
);
3703 nfs4_label_release_security(label
);
3708 static int _nfs4_proc_statfs(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3709 struct nfs_fsstat
*fsstat
)
3711 struct nfs4_statfs_arg args
= {
3713 .bitmask
= server
->attr_bitmask
,
3715 struct nfs4_statfs_res res
= {
3718 struct rpc_message msg
= {
3719 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_STATFS
],
3724 nfs_fattr_init(fsstat
->fattr
);
3725 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3728 static int nfs4_proc_statfs(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsstat
*fsstat
)
3730 struct nfs4_exception exception
= { };
3733 err
= nfs4_handle_exception(server
,
3734 _nfs4_proc_statfs(server
, fhandle
, fsstat
),
3736 } while (exception
.retry
);
3740 static int _nfs4_do_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3741 struct nfs_fsinfo
*fsinfo
)
3743 struct nfs4_fsinfo_arg args
= {
3745 .bitmask
= server
->attr_bitmask
,
3747 struct nfs4_fsinfo_res res
= {
3750 struct rpc_message msg
= {
3751 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FSINFO
],
3756 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3759 static int nfs4_do_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsinfo
*fsinfo
)
3761 struct nfs4_exception exception
= { };
3762 unsigned long now
= jiffies
;
3766 err
= _nfs4_do_fsinfo(server
, fhandle
, fsinfo
);
3767 trace_nfs4_fsinfo(server
, fhandle
, fsinfo
->fattr
, err
);
3769 struct nfs_client
*clp
= server
->nfs_client
;
3771 spin_lock(&clp
->cl_lock
);
3772 clp
->cl_lease_time
= fsinfo
->lease_time
* HZ
;
3773 clp
->cl_last_renewal
= now
;
3774 spin_unlock(&clp
->cl_lock
);
3777 err
= nfs4_handle_exception(server
, err
, &exception
);
3778 } while (exception
.retry
);
3782 static int nfs4_proc_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsinfo
*fsinfo
)
3786 nfs_fattr_init(fsinfo
->fattr
);
3787 error
= nfs4_do_fsinfo(server
, fhandle
, fsinfo
);
3789 /* block layout checks this! */
3790 server
->pnfs_blksize
= fsinfo
->blksize
;
3791 set_pnfs_layoutdriver(server
, fhandle
, fsinfo
->layouttype
);
3797 static int _nfs4_proc_pathconf(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3798 struct nfs_pathconf
*pathconf
)
3800 struct nfs4_pathconf_arg args
= {
3802 .bitmask
= server
->attr_bitmask
,
3804 struct nfs4_pathconf_res res
= {
3805 .pathconf
= pathconf
,
3807 struct rpc_message msg
= {
3808 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_PATHCONF
],
3813 /* None of the pathconf attributes are mandatory to implement */
3814 if ((args
.bitmask
[0] & nfs4_pathconf_bitmap
[0]) == 0) {
3815 memset(pathconf
, 0, sizeof(*pathconf
));
3819 nfs_fattr_init(pathconf
->fattr
);
3820 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3823 static int nfs4_proc_pathconf(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3824 struct nfs_pathconf
*pathconf
)
3826 struct nfs4_exception exception
= { };
3830 err
= nfs4_handle_exception(server
,
3831 _nfs4_proc_pathconf(server
, fhandle
, pathconf
),
3833 } while (exception
.retry
);
3837 int nfs4_set_rw_stateid(nfs4_stateid
*stateid
,
3838 const struct nfs_open_context
*ctx
,
3839 const struct nfs_lock_context
*l_ctx
,
3842 const struct nfs_lockowner
*lockowner
= NULL
;
3845 lockowner
= &l_ctx
->lockowner
;
3846 return nfs4_select_rw_stateid(stateid
, ctx
->state
, fmode
, lockowner
);
3848 EXPORT_SYMBOL_GPL(nfs4_set_rw_stateid
);
3850 static bool nfs4_stateid_is_current(nfs4_stateid
*stateid
,
3851 const struct nfs_open_context
*ctx
,
3852 const struct nfs_lock_context
*l_ctx
,
3855 nfs4_stateid current_stateid
;
3857 if (nfs4_set_rw_stateid(¤t_stateid
, ctx
, l_ctx
, fmode
))
3859 return nfs4_stateid_match(stateid
, ¤t_stateid
);
3862 static bool nfs4_error_stateid_expired(int err
)
3865 case -NFS4ERR_DELEG_REVOKED
:
3866 case -NFS4ERR_ADMIN_REVOKED
:
3867 case -NFS4ERR_BAD_STATEID
:
3868 case -NFS4ERR_STALE_STATEID
:
3869 case -NFS4ERR_OLD_STATEID
:
3870 case -NFS4ERR_OPENMODE
:
3871 case -NFS4ERR_EXPIRED
:
3877 void __nfs4_read_done_cb(struct nfs_read_data
*data
)
3879 nfs_invalidate_atime(data
->header
->inode
);
3882 static int nfs4_read_done_cb(struct rpc_task
*task
, struct nfs_read_data
*data
)
3884 struct nfs_server
*server
= NFS_SERVER(data
->header
->inode
);
3886 trace_nfs4_read(data
, task
->tk_status
);
3887 if (nfs4_async_handle_error(task
, server
, data
->args
.context
->state
) == -EAGAIN
) {
3888 rpc_restart_call_prepare(task
);
3892 __nfs4_read_done_cb(data
);
3893 if (task
->tk_status
> 0)
3894 renew_lease(server
, data
->timestamp
);
3898 static bool nfs4_read_stateid_changed(struct rpc_task
*task
,
3899 struct nfs_readargs
*args
)
3902 if (!nfs4_error_stateid_expired(task
->tk_status
) ||
3903 nfs4_stateid_is_current(&args
->stateid
,
3908 rpc_restart_call_prepare(task
);
3912 static int nfs4_read_done(struct rpc_task
*task
, struct nfs_read_data
*data
)
3915 dprintk("--> %s\n", __func__
);
3917 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
3919 if (nfs4_read_stateid_changed(task
, &data
->args
))
3921 return data
->read_done_cb
? data
->read_done_cb(task
, data
) :
3922 nfs4_read_done_cb(task
, data
);
3925 static void nfs4_proc_read_setup(struct nfs_read_data
*data
, struct rpc_message
*msg
)
3927 data
->timestamp
= jiffies
;
3928 data
->read_done_cb
= nfs4_read_done_cb
;
3929 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READ
];
3930 nfs41_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 0);
3933 static void nfs4_proc_read_rpc_prepare(struct rpc_task
*task
, struct nfs_read_data
*data
)
3935 if (nfs4_setup_sequence(NFS_SERVER(data
->header
->inode
),
3936 &data
->args
.seq_args
,
3940 nfs4_set_rw_stateid(&data
->args
.stateid
, data
->args
.context
,
3941 data
->args
.lock_context
, FMODE_READ
);
3944 static int nfs4_write_done_cb(struct rpc_task
*task
, struct nfs_write_data
*data
)
3946 struct inode
*inode
= data
->header
->inode
;
3948 trace_nfs4_write(data
, task
->tk_status
);
3949 if (nfs4_async_handle_error(task
, NFS_SERVER(inode
), data
->args
.context
->state
) == -EAGAIN
) {
3950 rpc_restart_call_prepare(task
);
3953 if (task
->tk_status
>= 0) {
3954 renew_lease(NFS_SERVER(inode
), data
->timestamp
);
3955 nfs_post_op_update_inode_force_wcc(inode
, &data
->fattr
);
3960 static bool nfs4_write_stateid_changed(struct rpc_task
*task
,
3961 struct nfs_writeargs
*args
)
3964 if (!nfs4_error_stateid_expired(task
->tk_status
) ||
3965 nfs4_stateid_is_current(&args
->stateid
,
3970 rpc_restart_call_prepare(task
);
3974 static int nfs4_write_done(struct rpc_task
*task
, struct nfs_write_data
*data
)
3976 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
3978 if (nfs4_write_stateid_changed(task
, &data
->args
))
3980 return data
->write_done_cb
? data
->write_done_cb(task
, data
) :
3981 nfs4_write_done_cb(task
, data
);
3985 bool nfs4_write_need_cache_consistency_data(const struct nfs_write_data
*data
)
3987 const struct nfs_pgio_header
*hdr
= data
->header
;
3989 /* Don't request attributes for pNFS or O_DIRECT writes */
3990 if (data
->ds_clp
!= NULL
|| hdr
->dreq
!= NULL
)
3992 /* Otherwise, request attributes if and only if we don't hold
3995 return nfs4_have_delegation(hdr
->inode
, FMODE_READ
) == 0;
3998 static void nfs4_proc_write_setup(struct nfs_write_data
*data
, struct rpc_message
*msg
)
4000 struct nfs_server
*server
= NFS_SERVER(data
->header
->inode
);
4002 if (!nfs4_write_need_cache_consistency_data(data
)) {
4003 data
->args
.bitmask
= NULL
;
4004 data
->res
.fattr
= NULL
;
4006 data
->args
.bitmask
= server
->cache_consistency_bitmask
;
4008 if (!data
->write_done_cb
)
4009 data
->write_done_cb
= nfs4_write_done_cb
;
4010 data
->res
.server
= server
;
4011 data
->timestamp
= jiffies
;
4013 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_WRITE
];
4014 nfs41_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
4017 static void nfs4_proc_write_rpc_prepare(struct rpc_task
*task
, struct nfs_write_data
*data
)
4019 if (nfs4_setup_sequence(NFS_SERVER(data
->header
->inode
),
4020 &data
->args
.seq_args
,
4024 nfs4_set_rw_stateid(&data
->args
.stateid
, data
->args
.context
,
4025 data
->args
.lock_context
, FMODE_WRITE
);
4028 static void nfs4_proc_commit_rpc_prepare(struct rpc_task
*task
, struct nfs_commit_data
*data
)
4030 nfs4_setup_sequence(NFS_SERVER(data
->inode
),
4031 &data
->args
.seq_args
,
4036 static int nfs4_commit_done_cb(struct rpc_task
*task
, struct nfs_commit_data
*data
)
4038 struct inode
*inode
= data
->inode
;
4040 trace_nfs4_commit(data
, task
->tk_status
);
4041 if (nfs4_async_handle_error(task
, NFS_SERVER(inode
), NULL
) == -EAGAIN
) {
4042 rpc_restart_call_prepare(task
);
4048 static int nfs4_commit_done(struct rpc_task
*task
, struct nfs_commit_data
*data
)
4050 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
4052 return data
->commit_done_cb(task
, data
);
4055 static void nfs4_proc_commit_setup(struct nfs_commit_data
*data
, struct rpc_message
*msg
)
4057 struct nfs_server
*server
= NFS_SERVER(data
->inode
);
4059 if (data
->commit_done_cb
== NULL
)
4060 data
->commit_done_cb
= nfs4_commit_done_cb
;
4061 data
->res
.server
= server
;
4062 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_COMMIT
];
4063 nfs41_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
4066 struct nfs4_renewdata
{
4067 struct nfs_client
*client
;
4068 unsigned long timestamp
;
4072 * nfs4_proc_async_renew(): This is not one of the nfs_rpc_ops; it is a special
4073 * standalone procedure for queueing an asynchronous RENEW.
4075 static void nfs4_renew_release(void *calldata
)
4077 struct nfs4_renewdata
*data
= calldata
;
4078 struct nfs_client
*clp
= data
->client
;
4080 if (atomic_read(&clp
->cl_count
) > 1)
4081 nfs4_schedule_state_renewal(clp
);
4082 nfs_put_client(clp
);
4086 static void nfs4_renew_done(struct rpc_task
*task
, void *calldata
)
4088 struct nfs4_renewdata
*data
= calldata
;
4089 struct nfs_client
*clp
= data
->client
;
4090 unsigned long timestamp
= data
->timestamp
;
4092 trace_nfs4_renew_async(clp
, task
->tk_status
);
4093 if (task
->tk_status
< 0) {
4094 /* Unless we're shutting down, schedule state recovery! */
4095 if (test_bit(NFS_CS_RENEWD
, &clp
->cl_res_state
) == 0)
4097 if (task
->tk_status
!= NFS4ERR_CB_PATH_DOWN
) {
4098 nfs4_schedule_lease_recovery(clp
);
4101 nfs4_schedule_path_down_recovery(clp
);
4103 do_renew_lease(clp
, timestamp
);
4106 static const struct rpc_call_ops nfs4_renew_ops
= {
4107 .rpc_call_done
= nfs4_renew_done
,
4108 .rpc_release
= nfs4_renew_release
,
4111 static int nfs4_proc_async_renew(struct nfs_client
*clp
, struct rpc_cred
*cred
, unsigned renew_flags
)
4113 struct rpc_message msg
= {
4114 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENEW
],
4118 struct nfs4_renewdata
*data
;
4120 if (renew_flags
== 0)
4122 if (!atomic_inc_not_zero(&clp
->cl_count
))
4124 data
= kmalloc(sizeof(*data
), GFP_NOFS
);
4128 data
->timestamp
= jiffies
;
4129 return rpc_call_async(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
,
4130 &nfs4_renew_ops
, data
);
4133 static int nfs4_proc_renew(struct nfs_client
*clp
, struct rpc_cred
*cred
)
4135 struct rpc_message msg
= {
4136 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENEW
],
4140 unsigned long now
= jiffies
;
4143 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
4146 do_renew_lease(clp
, now
);
4150 static inline int nfs4_server_supports_acls(struct nfs_server
*server
)
4152 return (server
->caps
& NFS_CAP_ACLS
)
4153 && (server
->acl_bitmask
& ACL4_SUPPORT_ALLOW_ACL
)
4154 && (server
->acl_bitmask
& ACL4_SUPPORT_DENY_ACL
);
4157 /* Assuming that XATTR_SIZE_MAX is a multiple of PAGE_SIZE, and that
4158 * it's OK to put sizeof(void) * (XATTR_SIZE_MAX/PAGE_SIZE) bytes on
4161 #define NFS4ACL_MAXPAGES DIV_ROUND_UP(XATTR_SIZE_MAX, PAGE_SIZE)
4163 static int buf_to_pages_noslab(const void *buf
, size_t buflen
,
4164 struct page
**pages
, unsigned int *pgbase
)
4166 struct page
*newpage
, **spages
;
4172 len
= min_t(size_t, PAGE_SIZE
, buflen
);
4173 newpage
= alloc_page(GFP_KERNEL
);
4175 if (newpage
== NULL
)
4177 memcpy(page_address(newpage
), buf
, len
);
4182 } while (buflen
!= 0);
4188 __free_page(spages
[rc
-1]);
4192 struct nfs4_cached_acl
{
4198 static void nfs4_set_cached_acl(struct inode
*inode
, struct nfs4_cached_acl
*acl
)
4200 struct nfs_inode
*nfsi
= NFS_I(inode
);
4202 spin_lock(&inode
->i_lock
);
4203 kfree(nfsi
->nfs4_acl
);
4204 nfsi
->nfs4_acl
= acl
;
4205 spin_unlock(&inode
->i_lock
);
4208 static void nfs4_zap_acl_attr(struct inode
*inode
)
4210 nfs4_set_cached_acl(inode
, NULL
);
4213 static inline ssize_t
nfs4_read_cached_acl(struct inode
*inode
, char *buf
, size_t buflen
)
4215 struct nfs_inode
*nfsi
= NFS_I(inode
);
4216 struct nfs4_cached_acl
*acl
;
4219 spin_lock(&inode
->i_lock
);
4220 acl
= nfsi
->nfs4_acl
;
4223 if (buf
== NULL
) /* user is just asking for length */
4225 if (acl
->cached
== 0)
4227 ret
= -ERANGE
; /* see getxattr(2) man page */
4228 if (acl
->len
> buflen
)
4230 memcpy(buf
, acl
->data
, acl
->len
);
4234 spin_unlock(&inode
->i_lock
);
4238 static void nfs4_write_cached_acl(struct inode
*inode
, struct page
**pages
, size_t pgbase
, size_t acl_len
)
4240 struct nfs4_cached_acl
*acl
;
4241 size_t buflen
= sizeof(*acl
) + acl_len
;
4243 if (buflen
<= PAGE_SIZE
) {
4244 acl
= kmalloc(buflen
, GFP_KERNEL
);
4248 _copy_from_pages(acl
->data
, pages
, pgbase
, acl_len
);
4250 acl
= kmalloc(sizeof(*acl
), GFP_KERNEL
);
4257 nfs4_set_cached_acl(inode
, acl
);
4261 * The getxattr API returns the required buffer length when called with a
4262 * NULL buf. The NFSv4 acl tool then calls getxattr again after allocating
4263 * the required buf. On a NULL buf, we send a page of data to the server
4264 * guessing that the ACL request can be serviced by a page. If so, we cache
4265 * up to the page of ACL data, and the 2nd call to getxattr is serviced by
4266 * the cache. If not so, we throw away the page, and cache the required
4267 * length. The next getxattr call will then produce another round trip to
4268 * the server, this time with the input buf of the required size.
4270 static ssize_t
__nfs4_get_acl_uncached(struct inode
*inode
, void *buf
, size_t buflen
)
4272 struct page
*pages
[NFS4ACL_MAXPAGES
] = {NULL
, };
4273 struct nfs_getaclargs args
= {
4274 .fh
= NFS_FH(inode
),
4278 struct nfs_getaclres res
= {
4281 struct rpc_message msg
= {
4282 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETACL
],
4286 unsigned int npages
= DIV_ROUND_UP(buflen
, PAGE_SIZE
);
4287 int ret
= -ENOMEM
, i
;
4289 /* As long as we're doing a round trip to the server anyway,
4290 * let's be prepared for a page of acl data. */
4293 if (npages
> ARRAY_SIZE(pages
))
4296 for (i
= 0; i
< npages
; i
++) {
4297 pages
[i
] = alloc_page(GFP_KERNEL
);
4302 /* for decoding across pages */
4303 res
.acl_scratch
= alloc_page(GFP_KERNEL
);
4304 if (!res
.acl_scratch
)
4307 args
.acl_len
= npages
* PAGE_SIZE
;
4308 args
.acl_pgbase
= 0;
4310 dprintk("%s buf %p buflen %zu npages %d args.acl_len %zu\n",
4311 __func__
, buf
, buflen
, npages
, args
.acl_len
);
4312 ret
= nfs4_call_sync(NFS_SERVER(inode
)->client
, NFS_SERVER(inode
),
4313 &msg
, &args
.seq_args
, &res
.seq_res
, 0);
4317 /* Handle the case where the passed-in buffer is too short */
4318 if (res
.acl_flags
& NFS4_ACL_TRUNC
) {
4319 /* Did the user only issue a request for the acl length? */
4325 nfs4_write_cached_acl(inode
, pages
, res
.acl_data_offset
, res
.acl_len
);
4327 if (res
.acl_len
> buflen
) {
4331 _copy_from_pages(buf
, pages
, res
.acl_data_offset
, res
.acl_len
);
4336 for (i
= 0; i
< npages
; i
++)
4338 __free_page(pages
[i
]);
4339 if (res
.acl_scratch
)
4340 __free_page(res
.acl_scratch
);
4344 static ssize_t
nfs4_get_acl_uncached(struct inode
*inode
, void *buf
, size_t buflen
)
4346 struct nfs4_exception exception
= { };
4349 ret
= __nfs4_get_acl_uncached(inode
, buf
, buflen
);
4350 trace_nfs4_get_acl(inode
, ret
);
4353 ret
= nfs4_handle_exception(NFS_SERVER(inode
), ret
, &exception
);
4354 } while (exception
.retry
);
4358 static ssize_t
nfs4_proc_get_acl(struct inode
*inode
, void *buf
, size_t buflen
)
4360 struct nfs_server
*server
= NFS_SERVER(inode
);
4363 if (!nfs4_server_supports_acls(server
))
4365 ret
= nfs_revalidate_inode(server
, inode
);
4368 if (NFS_I(inode
)->cache_validity
& NFS_INO_INVALID_ACL
)
4369 nfs_zap_acl_cache(inode
);
4370 ret
= nfs4_read_cached_acl(inode
, buf
, buflen
);
4372 /* -ENOENT is returned if there is no ACL or if there is an ACL
4373 * but no cached acl data, just the acl length */
4375 return nfs4_get_acl_uncached(inode
, buf
, buflen
);
4378 static int __nfs4_proc_set_acl(struct inode
*inode
, const void *buf
, size_t buflen
)
4380 struct nfs_server
*server
= NFS_SERVER(inode
);
4381 struct page
*pages
[NFS4ACL_MAXPAGES
];
4382 struct nfs_setaclargs arg
= {
4383 .fh
= NFS_FH(inode
),
4387 struct nfs_setaclres res
;
4388 struct rpc_message msg
= {
4389 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETACL
],
4393 unsigned int npages
= DIV_ROUND_UP(buflen
, PAGE_SIZE
);
4396 if (!nfs4_server_supports_acls(server
))
4398 if (npages
> ARRAY_SIZE(pages
))
4400 i
= buf_to_pages_noslab(buf
, buflen
, arg
.acl_pages
, &arg
.acl_pgbase
);
4403 nfs4_inode_return_delegation(inode
);
4404 ret
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
4407 * Free each page after tx, so the only ref left is
4408 * held by the network stack
4411 put_page(pages
[i
-1]);
4414 * Acl update can result in inode attribute update.
4415 * so mark the attribute cache invalid.
4417 spin_lock(&inode
->i_lock
);
4418 NFS_I(inode
)->cache_validity
|= NFS_INO_INVALID_ATTR
;
4419 spin_unlock(&inode
->i_lock
);
4420 nfs_access_zap_cache(inode
);
4421 nfs_zap_acl_cache(inode
);
4425 static int nfs4_proc_set_acl(struct inode
*inode
, const void *buf
, size_t buflen
)
4427 struct nfs4_exception exception
= { };
4430 err
= __nfs4_proc_set_acl(inode
, buf
, buflen
);
4431 trace_nfs4_set_acl(inode
, err
);
4432 err
= nfs4_handle_exception(NFS_SERVER(inode
), err
,
4434 } while (exception
.retry
);
4438 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
4439 static int _nfs4_get_security_label(struct inode
*inode
, void *buf
,
4442 struct nfs_server
*server
= NFS_SERVER(inode
);
4443 struct nfs_fattr fattr
;
4444 struct nfs4_label label
= {0, 0, buflen
, buf
};
4446 u32 bitmask
[3] = { 0, 0, FATTR4_WORD2_SECURITY_LABEL
};
4447 struct nfs4_getattr_arg args
= {
4448 .fh
= NFS_FH(inode
),
4451 struct nfs4_getattr_res res
= {
4456 struct rpc_message msg
= {
4457 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETATTR
],
4463 nfs_fattr_init(&fattr
);
4465 ret
= rpc_call_sync(server
->client
, &msg
, 0);
4468 if (!(fattr
.valid
& NFS_ATTR_FATTR_V4_SECURITY_LABEL
))
4470 if (buflen
< label
.len
)
4475 static int nfs4_get_security_label(struct inode
*inode
, void *buf
,
4478 struct nfs4_exception exception
= { };
4481 if (!nfs_server_capable(inode
, NFS_CAP_SECURITY_LABEL
))
4485 err
= _nfs4_get_security_label(inode
, buf
, buflen
);
4486 trace_nfs4_get_security_label(inode
, err
);
4487 err
= nfs4_handle_exception(NFS_SERVER(inode
), err
,
4489 } while (exception
.retry
);
4493 static int _nfs4_do_set_security_label(struct inode
*inode
,
4494 struct nfs4_label
*ilabel
,
4495 struct nfs_fattr
*fattr
,
4496 struct nfs4_label
*olabel
)
4499 struct iattr sattr
= {0};
4500 struct nfs_server
*server
= NFS_SERVER(inode
);
4501 const u32 bitmask
[3] = { 0, 0, FATTR4_WORD2_SECURITY_LABEL
};
4502 struct nfs_setattrargs args
= {
4503 .fh
= NFS_FH(inode
),
4509 struct nfs_setattrres res
= {
4514 struct rpc_message msg
= {
4515 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETATTR
],
4521 nfs4_stateid_copy(&args
.stateid
, &zero_stateid
);
4523 status
= rpc_call_sync(server
->client
, &msg
, 0);
4525 dprintk("%s failed: %d\n", __func__
, status
);
4530 static int nfs4_do_set_security_label(struct inode
*inode
,
4531 struct nfs4_label
*ilabel
,
4532 struct nfs_fattr
*fattr
,
4533 struct nfs4_label
*olabel
)
4535 struct nfs4_exception exception
= { };
4539 err
= _nfs4_do_set_security_label(inode
, ilabel
,
4541 trace_nfs4_set_security_label(inode
, err
);
4542 err
= nfs4_handle_exception(NFS_SERVER(inode
), err
,
4544 } while (exception
.retry
);
4549 nfs4_set_security_label(struct dentry
*dentry
, const void *buf
, size_t buflen
)
4551 struct nfs4_label ilabel
, *olabel
= NULL
;
4552 struct nfs_fattr fattr
;
4553 struct rpc_cred
*cred
;
4554 struct inode
*inode
= dentry
->d_inode
;
4557 if (!nfs_server_capable(inode
, NFS_CAP_SECURITY_LABEL
))
4560 nfs_fattr_init(&fattr
);
4564 ilabel
.label
= (char *)buf
;
4565 ilabel
.len
= buflen
;
4567 cred
= rpc_lookup_cred();
4569 return PTR_ERR(cred
);
4571 olabel
= nfs4_label_alloc(NFS_SERVER(inode
), GFP_KERNEL
);
4572 if (IS_ERR(olabel
)) {
4573 status
= -PTR_ERR(olabel
);
4577 status
= nfs4_do_set_security_label(inode
, &ilabel
, &fattr
, olabel
);
4579 nfs_setsecurity(inode
, &fattr
, olabel
);
4581 nfs4_label_free(olabel
);
4586 #endif /* CONFIG_NFS_V4_SECURITY_LABEL */
4590 nfs4_async_handle_error(struct rpc_task
*task
, const struct nfs_server
*server
, struct nfs4_state
*state
)
4592 struct nfs_client
*clp
= server
->nfs_client
;
4594 if (task
->tk_status
>= 0)
4596 switch(task
->tk_status
) {
4597 case -NFS4ERR_DELEG_REVOKED
:
4598 case -NFS4ERR_ADMIN_REVOKED
:
4599 case -NFS4ERR_BAD_STATEID
:
4602 nfs_remove_bad_delegation(state
->inode
);
4603 case -NFS4ERR_OPENMODE
:
4606 if (nfs4_schedule_stateid_recovery(server
, state
) < 0)
4607 goto stateid_invalid
;
4608 goto wait_on_recovery
;
4609 case -NFS4ERR_EXPIRED
:
4610 if (state
!= NULL
) {
4611 if (nfs4_schedule_stateid_recovery(server
, state
) < 0)
4612 goto stateid_invalid
;
4614 case -NFS4ERR_STALE_STATEID
:
4615 case -NFS4ERR_STALE_CLIENTID
:
4616 nfs4_schedule_lease_recovery(clp
);
4617 goto wait_on_recovery
;
4618 #if defined(CONFIG_NFS_V4_1)
4619 case -NFS4ERR_BADSESSION
:
4620 case -NFS4ERR_BADSLOT
:
4621 case -NFS4ERR_BAD_HIGH_SLOT
:
4622 case -NFS4ERR_DEADSESSION
:
4623 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
4624 case -NFS4ERR_SEQ_FALSE_RETRY
:
4625 case -NFS4ERR_SEQ_MISORDERED
:
4626 dprintk("%s ERROR %d, Reset session\n", __func__
,
4628 nfs4_schedule_session_recovery(clp
->cl_session
, task
->tk_status
);
4629 task
->tk_status
= 0;
4631 #endif /* CONFIG_NFS_V4_1 */
4632 case -NFS4ERR_DELAY
:
4633 nfs_inc_server_stats(server
, NFSIOS_DELAY
);
4634 case -NFS4ERR_GRACE
:
4635 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
4636 task
->tk_status
= 0;
4638 case -NFS4ERR_RETRY_UNCACHED_REP
:
4639 case -NFS4ERR_OLD_STATEID
:
4640 task
->tk_status
= 0;
4643 task
->tk_status
= nfs4_map_errors(task
->tk_status
);
4646 task
->tk_status
= -EIO
;
4649 rpc_sleep_on(&clp
->cl_rpcwaitq
, task
, NULL
);
4650 if (test_bit(NFS4CLNT_MANAGER_RUNNING
, &clp
->cl_state
) == 0)
4651 rpc_wake_up_queued_task(&clp
->cl_rpcwaitq
, task
);
4652 task
->tk_status
= 0;
4656 static void nfs4_init_boot_verifier(const struct nfs_client
*clp
,
4657 nfs4_verifier
*bootverf
)
4661 if (test_bit(NFS4CLNT_PURGE_STATE
, &clp
->cl_state
)) {
4662 /* An impossible timestamp guarantees this value
4663 * will never match a generated boot time. */
4665 verf
[1] = cpu_to_be32(NSEC_PER_SEC
+ 1);
4667 struct nfs_net
*nn
= net_generic(clp
->cl_net
, nfs_net_id
);
4668 verf
[0] = cpu_to_be32(nn
->boot_time
.tv_sec
);
4669 verf
[1] = cpu_to_be32(nn
->boot_time
.tv_nsec
);
4671 memcpy(bootverf
->data
, verf
, sizeof(bootverf
->data
));
4675 nfs4_init_nonuniform_client_string(const struct nfs_client
*clp
,
4676 char *buf
, size_t len
)
4678 unsigned int result
;
4681 result
= scnprintf(buf
, len
, "Linux NFSv4.0 %s/%s %s",
4683 rpc_peeraddr2str(clp
->cl_rpcclient
,
4685 rpc_peeraddr2str(clp
->cl_rpcclient
,
4686 RPC_DISPLAY_PROTO
));
4692 nfs4_init_uniform_client_string(const struct nfs_client
*clp
,
4693 char *buf
, size_t len
)
4695 const char *nodename
= clp
->cl_rpcclient
->cl_nodename
;
4697 if (nfs4_client_id_uniquifier
[0] != '\0')
4698 return scnprintf(buf
, len
, "Linux NFSv%u.%u %s/%s",
4699 clp
->rpc_ops
->version
,
4700 clp
->cl_minorversion
,
4701 nfs4_client_id_uniquifier
,
4703 return scnprintf(buf
, len
, "Linux NFSv%u.%u %s",
4704 clp
->rpc_ops
->version
, clp
->cl_minorversion
,
4709 * nfs4_proc_setclientid - Negotiate client ID
4710 * @clp: state data structure
4711 * @program: RPC program for NFSv4 callback service
4712 * @port: IP port number for NFS4 callback service
4713 * @cred: RPC credential to use for this call
4714 * @res: where to place the result
4716 * Returns zero, a negative errno, or a negative NFS4ERR status code.
4718 int nfs4_proc_setclientid(struct nfs_client
*clp
, u32 program
,
4719 unsigned short port
, struct rpc_cred
*cred
,
4720 struct nfs4_setclientid_res
*res
)
4722 nfs4_verifier sc_verifier
;
4723 struct nfs4_setclientid setclientid
= {
4724 .sc_verifier
= &sc_verifier
,
4726 .sc_cb_ident
= clp
->cl_cb_ident
,
4728 struct rpc_message msg
= {
4729 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETCLIENTID
],
4730 .rpc_argp
= &setclientid
,
4736 /* nfs_client_id4 */
4737 nfs4_init_boot_verifier(clp
, &sc_verifier
);
4738 if (test_bit(NFS_CS_MIGRATION
, &clp
->cl_flags
))
4739 setclientid
.sc_name_len
=
4740 nfs4_init_uniform_client_string(clp
,
4741 setclientid
.sc_name
,
4742 sizeof(setclientid
.sc_name
));
4744 setclientid
.sc_name_len
=
4745 nfs4_init_nonuniform_client_string(clp
,
4746 setclientid
.sc_name
,
4747 sizeof(setclientid
.sc_name
));
4750 setclientid
.sc_netid_len
= scnprintf(setclientid
.sc_netid
,
4751 sizeof(setclientid
.sc_netid
), "%s",
4752 rpc_peeraddr2str(clp
->cl_rpcclient
,
4753 RPC_DISPLAY_NETID
));
4755 setclientid
.sc_uaddr_len
= scnprintf(setclientid
.sc_uaddr
,
4756 sizeof(setclientid
.sc_uaddr
), "%s.%u.%u",
4757 clp
->cl_ipaddr
, port
>> 8, port
& 255);
4759 dprintk("NFS call setclientid auth=%s, '%.*s'\n",
4760 clp
->cl_rpcclient
->cl_auth
->au_ops
->au_name
,
4761 setclientid
.sc_name_len
, setclientid
.sc_name
);
4762 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
4763 trace_nfs4_setclientid(clp
, status
);
4764 dprintk("NFS reply setclientid: %d\n", status
);
4769 * nfs4_proc_setclientid_confirm - Confirm client ID
4770 * @clp: state data structure
4771 * @res: result of a previous SETCLIENTID
4772 * @cred: RPC credential to use for this call
4774 * Returns zero, a negative errno, or a negative NFS4ERR status code.
4776 int nfs4_proc_setclientid_confirm(struct nfs_client
*clp
,
4777 struct nfs4_setclientid_res
*arg
,
4778 struct rpc_cred
*cred
)
4780 struct rpc_message msg
= {
4781 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETCLIENTID_CONFIRM
],
4787 dprintk("NFS call setclientid_confirm auth=%s, (client ID %llx)\n",
4788 clp
->cl_rpcclient
->cl_auth
->au_ops
->au_name
,
4790 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
4791 trace_nfs4_setclientid_confirm(clp
, status
);
4792 dprintk("NFS reply setclientid_confirm: %d\n", status
);
4796 struct nfs4_delegreturndata
{
4797 struct nfs4_delegreturnargs args
;
4798 struct nfs4_delegreturnres res
;
4800 nfs4_stateid stateid
;
4801 unsigned long timestamp
;
4802 struct nfs_fattr fattr
;
4806 static void nfs4_delegreturn_done(struct rpc_task
*task
, void *calldata
)
4808 struct nfs4_delegreturndata
*data
= calldata
;
4810 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
4813 trace_nfs4_delegreturn_exit(&data
->args
, &data
->res
, task
->tk_status
);
4814 switch (task
->tk_status
) {
4815 case -NFS4ERR_STALE_STATEID
:
4816 case -NFS4ERR_EXPIRED
:
4818 renew_lease(data
->res
.server
, data
->timestamp
);
4821 if (nfs4_async_handle_error(task
, data
->res
.server
, NULL
) ==
4823 rpc_restart_call_prepare(task
);
4827 data
->rpc_status
= task
->tk_status
;
4830 static void nfs4_delegreturn_release(void *calldata
)
4835 #if defined(CONFIG_NFS_V4_1)
4836 static void nfs4_delegreturn_prepare(struct rpc_task
*task
, void *data
)
4838 struct nfs4_delegreturndata
*d_data
;
4840 d_data
= (struct nfs4_delegreturndata
*)data
;
4842 nfs4_setup_sequence(d_data
->res
.server
,
4843 &d_data
->args
.seq_args
,
4844 &d_data
->res
.seq_res
,
4847 #endif /* CONFIG_NFS_V4_1 */
4849 static const struct rpc_call_ops nfs4_delegreturn_ops
= {
4850 #if defined(CONFIG_NFS_V4_1)
4851 .rpc_call_prepare
= nfs4_delegreturn_prepare
,
4852 #endif /* CONFIG_NFS_V4_1 */
4853 .rpc_call_done
= nfs4_delegreturn_done
,
4854 .rpc_release
= nfs4_delegreturn_release
,
4857 static int _nfs4_proc_delegreturn(struct inode
*inode
, struct rpc_cred
*cred
, const nfs4_stateid
*stateid
, int issync
)
4859 struct nfs4_delegreturndata
*data
;
4860 struct nfs_server
*server
= NFS_SERVER(inode
);
4861 struct rpc_task
*task
;
4862 struct rpc_message msg
= {
4863 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DELEGRETURN
],
4866 struct rpc_task_setup task_setup_data
= {
4867 .rpc_client
= server
->client
,
4868 .rpc_message
= &msg
,
4869 .callback_ops
= &nfs4_delegreturn_ops
,
4870 .flags
= RPC_TASK_ASYNC
,
4874 data
= kzalloc(sizeof(*data
), GFP_NOFS
);
4877 nfs41_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
4878 data
->args
.fhandle
= &data
->fh
;
4879 data
->args
.stateid
= &data
->stateid
;
4880 data
->args
.bitmask
= server
->cache_consistency_bitmask
;
4881 nfs_copy_fh(&data
->fh
, NFS_FH(inode
));
4882 nfs4_stateid_copy(&data
->stateid
, stateid
);
4883 data
->res
.fattr
= &data
->fattr
;
4884 data
->res
.server
= server
;
4885 nfs_fattr_init(data
->res
.fattr
);
4886 data
->timestamp
= jiffies
;
4887 data
->rpc_status
= 0;
4889 task_setup_data
.callback_data
= data
;
4890 msg
.rpc_argp
= &data
->args
;
4891 msg
.rpc_resp
= &data
->res
;
4892 task
= rpc_run_task(&task_setup_data
);
4894 return PTR_ERR(task
);
4897 status
= nfs4_wait_for_completion_rpc_task(task
);
4900 status
= data
->rpc_status
;
4902 nfs_post_op_update_inode_force_wcc(inode
, &data
->fattr
);
4904 nfs_refresh_inode(inode
, &data
->fattr
);
4910 int nfs4_proc_delegreturn(struct inode
*inode
, struct rpc_cred
*cred
, const nfs4_stateid
*stateid
, int issync
)
4912 struct nfs_server
*server
= NFS_SERVER(inode
);
4913 struct nfs4_exception exception
= { };
4916 err
= _nfs4_proc_delegreturn(inode
, cred
, stateid
, issync
);
4917 trace_nfs4_delegreturn(inode
, err
);
4919 case -NFS4ERR_STALE_STATEID
:
4920 case -NFS4ERR_EXPIRED
:
4924 err
= nfs4_handle_exception(server
, err
, &exception
);
4925 } while (exception
.retry
);
4929 #define NFS4_LOCK_MINTIMEOUT (1 * HZ)
4930 #define NFS4_LOCK_MAXTIMEOUT (30 * HZ)
4933 * sleep, with exponential backoff, and retry the LOCK operation.
4935 static unsigned long
4936 nfs4_set_lock_task_retry(unsigned long timeout
)
4938 freezable_schedule_timeout_killable_unsafe(timeout
);
4940 if (timeout
> NFS4_LOCK_MAXTIMEOUT
)
4941 return NFS4_LOCK_MAXTIMEOUT
;
4945 static int _nfs4_proc_getlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
4947 struct inode
*inode
= state
->inode
;
4948 struct nfs_server
*server
= NFS_SERVER(inode
);
4949 struct nfs_client
*clp
= server
->nfs_client
;
4950 struct nfs_lockt_args arg
= {
4951 .fh
= NFS_FH(inode
),
4954 struct nfs_lockt_res res
= {
4957 struct rpc_message msg
= {
4958 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCKT
],
4961 .rpc_cred
= state
->owner
->so_cred
,
4963 struct nfs4_lock_state
*lsp
;
4966 arg
.lock_owner
.clientid
= clp
->cl_clientid
;
4967 status
= nfs4_set_lock_state(state
, request
);
4970 lsp
= request
->fl_u
.nfs4_fl
.owner
;
4971 arg
.lock_owner
.id
= lsp
->ls_seqid
.owner_id
;
4972 arg
.lock_owner
.s_dev
= server
->s_dev
;
4973 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
4976 request
->fl_type
= F_UNLCK
;
4978 case -NFS4ERR_DENIED
:
4981 request
->fl_ops
->fl_release_private(request
);
4986 static int nfs4_proc_getlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
4988 struct nfs4_exception exception
= { };
4992 err
= _nfs4_proc_getlk(state
, cmd
, request
);
4993 trace_nfs4_get_lock(request
, state
, cmd
, err
);
4994 err
= nfs4_handle_exception(NFS_SERVER(state
->inode
), err
,
4996 } while (exception
.retry
);
5000 static int do_vfs_lock(struct file
*file
, struct file_lock
*fl
)
5003 switch (fl
->fl_flags
& (FL_POSIX
|FL_FLOCK
)) {
5005 res
= posix_lock_file_wait(file
, fl
);
5008 res
= flock_lock_file_wait(file
, fl
);
5016 struct nfs4_unlockdata
{
5017 struct nfs_locku_args arg
;
5018 struct nfs_locku_res res
;
5019 struct nfs4_lock_state
*lsp
;
5020 struct nfs_open_context
*ctx
;
5021 struct file_lock fl
;
5022 const struct nfs_server
*server
;
5023 unsigned long timestamp
;
5026 static struct nfs4_unlockdata
*nfs4_alloc_unlockdata(struct file_lock
*fl
,
5027 struct nfs_open_context
*ctx
,
5028 struct nfs4_lock_state
*lsp
,
5029 struct nfs_seqid
*seqid
)
5031 struct nfs4_unlockdata
*p
;
5032 struct inode
*inode
= lsp
->ls_state
->inode
;
5034 p
= kzalloc(sizeof(*p
), GFP_NOFS
);
5037 p
->arg
.fh
= NFS_FH(inode
);
5039 p
->arg
.seqid
= seqid
;
5040 p
->res
.seqid
= seqid
;
5041 p
->arg
.stateid
= &lsp
->ls_stateid
;
5043 atomic_inc(&lsp
->ls_count
);
5044 /* Ensure we don't close file until we're done freeing locks! */
5045 p
->ctx
= get_nfs_open_context(ctx
);
5046 memcpy(&p
->fl
, fl
, sizeof(p
->fl
));
5047 p
->server
= NFS_SERVER(inode
);
5051 static void nfs4_locku_release_calldata(void *data
)
5053 struct nfs4_unlockdata
*calldata
= data
;
5054 nfs_free_seqid(calldata
->arg
.seqid
);
5055 nfs4_put_lock_state(calldata
->lsp
);
5056 put_nfs_open_context(calldata
->ctx
);
5060 static void nfs4_locku_done(struct rpc_task
*task
, void *data
)
5062 struct nfs4_unlockdata
*calldata
= data
;
5064 if (!nfs4_sequence_done(task
, &calldata
->res
.seq_res
))
5066 switch (task
->tk_status
) {
5068 nfs4_stateid_copy(&calldata
->lsp
->ls_stateid
,
5069 &calldata
->res
.stateid
);
5070 renew_lease(calldata
->server
, calldata
->timestamp
);
5072 case -NFS4ERR_BAD_STATEID
:
5073 case -NFS4ERR_OLD_STATEID
:
5074 case -NFS4ERR_STALE_STATEID
:
5075 case -NFS4ERR_EXPIRED
:
5078 if (nfs4_async_handle_error(task
, calldata
->server
, NULL
) == -EAGAIN
)
5079 rpc_restart_call_prepare(task
);
5081 nfs_release_seqid(calldata
->arg
.seqid
);
5084 static void nfs4_locku_prepare(struct rpc_task
*task
, void *data
)
5086 struct nfs4_unlockdata
*calldata
= data
;
5088 if (nfs_wait_on_sequence(calldata
->arg
.seqid
, task
) != 0)
5090 if (test_bit(NFS_LOCK_INITIALIZED
, &calldata
->lsp
->ls_flags
) == 0) {
5091 /* Note: exit _without_ running nfs4_locku_done */
5094 calldata
->timestamp
= jiffies
;
5095 if (nfs4_setup_sequence(calldata
->server
,
5096 &calldata
->arg
.seq_args
,
5097 &calldata
->res
.seq_res
,
5099 nfs_release_seqid(calldata
->arg
.seqid
);
5102 task
->tk_action
= NULL
;
5104 nfs4_sequence_done(task
, &calldata
->res
.seq_res
);
5107 static const struct rpc_call_ops nfs4_locku_ops
= {
5108 .rpc_call_prepare
= nfs4_locku_prepare
,
5109 .rpc_call_done
= nfs4_locku_done
,
5110 .rpc_release
= nfs4_locku_release_calldata
,
5113 static struct rpc_task
*nfs4_do_unlck(struct file_lock
*fl
,
5114 struct nfs_open_context
*ctx
,
5115 struct nfs4_lock_state
*lsp
,
5116 struct nfs_seqid
*seqid
)
5118 struct nfs4_unlockdata
*data
;
5119 struct rpc_message msg
= {
5120 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCKU
],
5121 .rpc_cred
= ctx
->cred
,
5123 struct rpc_task_setup task_setup_data
= {
5124 .rpc_client
= NFS_CLIENT(lsp
->ls_state
->inode
),
5125 .rpc_message
= &msg
,
5126 .callback_ops
= &nfs4_locku_ops
,
5127 .workqueue
= nfsiod_workqueue
,
5128 .flags
= RPC_TASK_ASYNC
,
5131 /* Ensure this is an unlock - when canceling a lock, the
5132 * canceled lock is passed in, and it won't be an unlock.
5134 fl
->fl_type
= F_UNLCK
;
5136 data
= nfs4_alloc_unlockdata(fl
, ctx
, lsp
, seqid
);
5138 nfs_free_seqid(seqid
);
5139 return ERR_PTR(-ENOMEM
);
5142 nfs41_init_sequence(&data
->arg
.seq_args
, &data
->res
.seq_res
, 1);
5143 msg
.rpc_argp
= &data
->arg
;
5144 msg
.rpc_resp
= &data
->res
;
5145 task_setup_data
.callback_data
= data
;
5146 return rpc_run_task(&task_setup_data
);
5149 static int nfs4_proc_unlck(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
5151 struct inode
*inode
= state
->inode
;
5152 struct nfs4_state_owner
*sp
= state
->owner
;
5153 struct nfs_inode
*nfsi
= NFS_I(inode
);
5154 struct nfs_seqid
*seqid
;
5155 struct nfs4_lock_state
*lsp
;
5156 struct rpc_task
*task
;
5158 unsigned char fl_flags
= request
->fl_flags
;
5160 status
= nfs4_set_lock_state(state
, request
);
5161 /* Unlock _before_ we do the RPC call */
5162 request
->fl_flags
|= FL_EXISTS
;
5163 /* Exclude nfs_delegation_claim_locks() */
5164 mutex_lock(&sp
->so_delegreturn_mutex
);
5165 /* Exclude nfs4_reclaim_open_stateid() - note nesting! */
5166 down_read(&nfsi
->rwsem
);
5167 if (do_vfs_lock(request
->fl_file
, request
) == -ENOENT
) {
5168 up_read(&nfsi
->rwsem
);
5169 mutex_unlock(&sp
->so_delegreturn_mutex
);
5172 up_read(&nfsi
->rwsem
);
5173 mutex_unlock(&sp
->so_delegreturn_mutex
);
5176 /* Is this a delegated lock? */
5177 lsp
= request
->fl_u
.nfs4_fl
.owner
;
5178 if (test_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
) == 0)
5180 seqid
= nfs_alloc_seqid(&lsp
->ls_seqid
, GFP_KERNEL
);
5184 task
= nfs4_do_unlck(request
, nfs_file_open_context(request
->fl_file
), lsp
, seqid
);
5185 status
= PTR_ERR(task
);
5188 status
= nfs4_wait_for_completion_rpc_task(task
);
5191 request
->fl_flags
= fl_flags
;
5192 trace_nfs4_unlock(request
, state
, F_SETLK
, status
);
5196 struct nfs4_lockdata
{
5197 struct nfs_lock_args arg
;
5198 struct nfs_lock_res res
;
5199 struct nfs4_lock_state
*lsp
;
5200 struct nfs_open_context
*ctx
;
5201 struct file_lock fl
;
5202 unsigned long timestamp
;
5205 struct nfs_server
*server
;
5208 static struct nfs4_lockdata
*nfs4_alloc_lockdata(struct file_lock
*fl
,
5209 struct nfs_open_context
*ctx
, struct nfs4_lock_state
*lsp
,
5212 struct nfs4_lockdata
*p
;
5213 struct inode
*inode
= lsp
->ls_state
->inode
;
5214 struct nfs_server
*server
= NFS_SERVER(inode
);
5216 p
= kzalloc(sizeof(*p
), gfp_mask
);
5220 p
->arg
.fh
= NFS_FH(inode
);
5222 p
->arg
.open_seqid
= nfs_alloc_seqid(&lsp
->ls_state
->owner
->so_seqid
, gfp_mask
);
5223 if (p
->arg
.open_seqid
== NULL
)
5225 p
->arg
.lock_seqid
= nfs_alloc_seqid(&lsp
->ls_seqid
, gfp_mask
);
5226 if (p
->arg
.lock_seqid
== NULL
)
5227 goto out_free_seqid
;
5228 p
->arg
.lock_stateid
= &lsp
->ls_stateid
;
5229 p
->arg
.lock_owner
.clientid
= server
->nfs_client
->cl_clientid
;
5230 p
->arg
.lock_owner
.id
= lsp
->ls_seqid
.owner_id
;
5231 p
->arg
.lock_owner
.s_dev
= server
->s_dev
;
5232 p
->res
.lock_seqid
= p
->arg
.lock_seqid
;
5235 atomic_inc(&lsp
->ls_count
);
5236 p
->ctx
= get_nfs_open_context(ctx
);
5237 memcpy(&p
->fl
, fl
, sizeof(p
->fl
));
5240 nfs_free_seqid(p
->arg
.open_seqid
);
5246 static void nfs4_lock_prepare(struct rpc_task
*task
, void *calldata
)
5248 struct nfs4_lockdata
*data
= calldata
;
5249 struct nfs4_state
*state
= data
->lsp
->ls_state
;
5251 dprintk("%s: begin!\n", __func__
);
5252 if (nfs_wait_on_sequence(data
->arg
.lock_seqid
, task
) != 0)
5254 /* Do we need to do an open_to_lock_owner? */
5255 if (!(data
->arg
.lock_seqid
->sequence
->flags
& NFS_SEQID_CONFIRMED
)) {
5256 if (nfs_wait_on_sequence(data
->arg
.open_seqid
, task
) != 0) {
5257 goto out_release_lock_seqid
;
5259 data
->arg
.open_stateid
= &state
->open_stateid
;
5260 data
->arg
.new_lock_owner
= 1;
5261 data
->res
.open_seqid
= data
->arg
.open_seqid
;
5263 data
->arg
.new_lock_owner
= 0;
5264 if (!nfs4_valid_open_stateid(state
)) {
5265 data
->rpc_status
= -EBADF
;
5266 task
->tk_action
= NULL
;
5267 goto out_release_open_seqid
;
5269 data
->timestamp
= jiffies
;
5270 if (nfs4_setup_sequence(data
->server
,
5271 &data
->arg
.seq_args
,
5275 out_release_open_seqid
:
5276 nfs_release_seqid(data
->arg
.open_seqid
);
5277 out_release_lock_seqid
:
5278 nfs_release_seqid(data
->arg
.lock_seqid
);
5280 nfs4_sequence_done(task
, &data
->res
.seq_res
);
5281 dprintk("%s: done!, ret = %d\n", __func__
, data
->rpc_status
);
5284 static void nfs4_lock_done(struct rpc_task
*task
, void *calldata
)
5286 struct nfs4_lockdata
*data
= calldata
;
5288 dprintk("%s: begin!\n", __func__
);
5290 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
5293 data
->rpc_status
= task
->tk_status
;
5294 if (data
->arg
.new_lock_owner
!= 0) {
5295 if (data
->rpc_status
== 0)
5296 nfs_confirm_seqid(&data
->lsp
->ls_seqid
, 0);
5300 if (data
->rpc_status
== 0) {
5301 nfs4_stateid_copy(&data
->lsp
->ls_stateid
, &data
->res
.stateid
);
5302 set_bit(NFS_LOCK_INITIALIZED
, &data
->lsp
->ls_flags
);
5303 renew_lease(NFS_SERVER(data
->ctx
->dentry
->d_inode
), data
->timestamp
);
5306 dprintk("%s: done, ret = %d!\n", __func__
, data
->rpc_status
);
5309 static void nfs4_lock_release(void *calldata
)
5311 struct nfs4_lockdata
*data
= calldata
;
5313 dprintk("%s: begin!\n", __func__
);
5314 nfs_free_seqid(data
->arg
.open_seqid
);
5315 if (data
->cancelled
!= 0) {
5316 struct rpc_task
*task
;
5317 task
= nfs4_do_unlck(&data
->fl
, data
->ctx
, data
->lsp
,
5318 data
->arg
.lock_seqid
);
5320 rpc_put_task_async(task
);
5321 dprintk("%s: cancelling lock!\n", __func__
);
5323 nfs_free_seqid(data
->arg
.lock_seqid
);
5324 nfs4_put_lock_state(data
->lsp
);
5325 put_nfs_open_context(data
->ctx
);
5327 dprintk("%s: done!\n", __func__
);
5330 static const struct rpc_call_ops nfs4_lock_ops
= {
5331 .rpc_call_prepare
= nfs4_lock_prepare
,
5332 .rpc_call_done
= nfs4_lock_done
,
5333 .rpc_release
= nfs4_lock_release
,
5336 static void nfs4_handle_setlk_error(struct nfs_server
*server
, struct nfs4_lock_state
*lsp
, int new_lock_owner
, int error
)
5339 case -NFS4ERR_ADMIN_REVOKED
:
5340 case -NFS4ERR_BAD_STATEID
:
5341 lsp
->ls_seqid
.flags
&= ~NFS_SEQID_CONFIRMED
;
5342 if (new_lock_owner
!= 0 ||
5343 test_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
) != 0)
5344 nfs4_schedule_stateid_recovery(server
, lsp
->ls_state
);
5346 case -NFS4ERR_STALE_STATEID
:
5347 lsp
->ls_seqid
.flags
&= ~NFS_SEQID_CONFIRMED
;
5348 case -NFS4ERR_EXPIRED
:
5349 nfs4_schedule_lease_recovery(server
->nfs_client
);
5353 static int _nfs4_do_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*fl
, int recovery_type
)
5355 struct nfs4_lockdata
*data
;
5356 struct rpc_task
*task
;
5357 struct rpc_message msg
= {
5358 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCK
],
5359 .rpc_cred
= state
->owner
->so_cred
,
5361 struct rpc_task_setup task_setup_data
= {
5362 .rpc_client
= NFS_CLIENT(state
->inode
),
5363 .rpc_message
= &msg
,
5364 .callback_ops
= &nfs4_lock_ops
,
5365 .workqueue
= nfsiod_workqueue
,
5366 .flags
= RPC_TASK_ASYNC
,
5370 dprintk("%s: begin!\n", __func__
);
5371 data
= nfs4_alloc_lockdata(fl
, nfs_file_open_context(fl
->fl_file
),
5372 fl
->fl_u
.nfs4_fl
.owner
,
5373 recovery_type
== NFS_LOCK_NEW
? GFP_KERNEL
: GFP_NOFS
);
5377 data
->arg
.block
= 1;
5378 nfs41_init_sequence(&data
->arg
.seq_args
, &data
->res
.seq_res
, 1);
5379 msg
.rpc_argp
= &data
->arg
;
5380 msg
.rpc_resp
= &data
->res
;
5381 task_setup_data
.callback_data
= data
;
5382 if (recovery_type
> NFS_LOCK_NEW
) {
5383 if (recovery_type
== NFS_LOCK_RECLAIM
)
5384 data
->arg
.reclaim
= NFS_LOCK_RECLAIM
;
5385 nfs4_set_sequence_privileged(&data
->arg
.seq_args
);
5387 task
= rpc_run_task(&task_setup_data
);
5389 return PTR_ERR(task
);
5390 ret
= nfs4_wait_for_completion_rpc_task(task
);
5392 ret
= data
->rpc_status
;
5394 nfs4_handle_setlk_error(data
->server
, data
->lsp
,
5395 data
->arg
.new_lock_owner
, ret
);
5397 data
->cancelled
= 1;
5399 dprintk("%s: done, ret = %d!\n", __func__
, ret
);
5403 static int nfs4_lock_reclaim(struct nfs4_state
*state
, struct file_lock
*request
)
5405 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
5406 struct nfs4_exception exception
= {
5407 .inode
= state
->inode
,
5412 /* Cache the lock if possible... */
5413 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) != 0)
5415 err
= _nfs4_do_setlk(state
, F_SETLK
, request
, NFS_LOCK_RECLAIM
);
5416 trace_nfs4_lock_reclaim(request
, state
, F_SETLK
, err
);
5417 if (err
!= -NFS4ERR_DELAY
)
5419 nfs4_handle_exception(server
, err
, &exception
);
5420 } while (exception
.retry
);
5424 static int nfs4_lock_expired(struct nfs4_state
*state
, struct file_lock
*request
)
5426 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
5427 struct nfs4_exception exception
= {
5428 .inode
= state
->inode
,
5432 err
= nfs4_set_lock_state(state
, request
);
5436 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) != 0)
5438 err
= _nfs4_do_setlk(state
, F_SETLK
, request
, NFS_LOCK_EXPIRED
);
5439 trace_nfs4_lock_expired(request
, state
, F_SETLK
, err
);
5443 case -NFS4ERR_GRACE
:
5444 case -NFS4ERR_DELAY
:
5445 nfs4_handle_exception(server
, err
, &exception
);
5448 } while (exception
.retry
);
5453 #if defined(CONFIG_NFS_V4_1)
5455 * nfs41_check_expired_locks - possibly free a lock stateid
5457 * @state: NFSv4 state for an inode
5459 * Returns NFS_OK if recovery for this stateid is now finished.
5460 * Otherwise a negative NFS4ERR value is returned.
5462 static int nfs41_check_expired_locks(struct nfs4_state
*state
)
5464 int status
, ret
= -NFS4ERR_BAD_STATEID
;
5465 struct nfs4_lock_state
*lsp
;
5466 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
5468 list_for_each_entry(lsp
, &state
->lock_states
, ls_locks
) {
5469 if (test_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
)) {
5470 struct rpc_cred
*cred
= lsp
->ls_state
->owner
->so_cred
;
5472 status
= nfs41_test_stateid(server
,
5475 if (status
!= NFS_OK
) {
5476 /* Free the stateid unless the server
5477 * informs us the stateid is unrecognized. */
5478 if (status
!= -NFS4ERR_BAD_STATEID
)
5479 nfs41_free_stateid(server
,
5482 clear_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
);
5491 static int nfs41_lock_expired(struct nfs4_state
*state
, struct file_lock
*request
)
5493 int status
= NFS_OK
;
5495 if (test_bit(LK_STATE_IN_USE
, &state
->flags
))
5496 status
= nfs41_check_expired_locks(state
);
5497 if (status
!= NFS_OK
)
5498 status
= nfs4_lock_expired(state
, request
);
5503 static int _nfs4_proc_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
5505 struct nfs4_state_owner
*sp
= state
->owner
;
5506 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
5507 unsigned char fl_flags
= request
->fl_flags
;
5509 int status
= -ENOLCK
;
5511 if ((fl_flags
& FL_POSIX
) &&
5512 !test_bit(NFS_STATE_POSIX_LOCKS
, &state
->flags
))
5514 /* Is this a delegated open? */
5515 status
= nfs4_set_lock_state(state
, request
);
5518 request
->fl_flags
|= FL_ACCESS
;
5519 status
= do_vfs_lock(request
->fl_file
, request
);
5522 down_read(&nfsi
->rwsem
);
5523 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
)) {
5524 /* Yes: cache locks! */
5525 /* ...but avoid races with delegation recall... */
5526 request
->fl_flags
= fl_flags
& ~FL_SLEEP
;
5527 status
= do_vfs_lock(request
->fl_file
, request
);
5530 seq
= raw_seqcount_begin(&sp
->so_reclaim_seqcount
);
5531 up_read(&nfsi
->rwsem
);
5532 status
= _nfs4_do_setlk(state
, cmd
, request
, NFS_LOCK_NEW
);
5535 down_read(&nfsi
->rwsem
);
5536 if (read_seqcount_retry(&sp
->so_reclaim_seqcount
, seq
)) {
5537 status
= -NFS4ERR_DELAY
;
5540 /* Note: we always want to sleep here! */
5541 request
->fl_flags
= fl_flags
| FL_SLEEP
;
5542 if (do_vfs_lock(request
->fl_file
, request
) < 0)
5543 printk(KERN_WARNING
"NFS: %s: VFS is out of sync with lock "
5544 "manager!\n", __func__
);
5546 up_read(&nfsi
->rwsem
);
5548 request
->fl_flags
= fl_flags
;
5552 static int nfs4_proc_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
5554 struct nfs4_exception exception
= {
5556 .inode
= state
->inode
,
5561 err
= _nfs4_proc_setlk(state
, cmd
, request
);
5562 trace_nfs4_set_lock(request
, state
, cmd
, err
);
5563 if (err
== -NFS4ERR_DENIED
)
5565 err
= nfs4_handle_exception(NFS_SERVER(state
->inode
),
5567 } while (exception
.retry
);
5572 nfs4_proc_lock(struct file
*filp
, int cmd
, struct file_lock
*request
)
5574 struct nfs_open_context
*ctx
;
5575 struct nfs4_state
*state
;
5576 unsigned long timeout
= NFS4_LOCK_MINTIMEOUT
;
5579 /* verify open state */
5580 ctx
= nfs_file_open_context(filp
);
5583 if (request
->fl_start
< 0 || request
->fl_end
< 0)
5586 if (IS_GETLK(cmd
)) {
5588 return nfs4_proc_getlk(state
, F_GETLK
, request
);
5592 if (!(IS_SETLK(cmd
) || IS_SETLKW(cmd
)))
5595 if (request
->fl_type
== F_UNLCK
) {
5597 return nfs4_proc_unlck(state
, cmd
, request
);
5604 * Don't rely on the VFS having checked the file open mode,
5605 * since it won't do this for flock() locks.
5607 switch (request
->fl_type
) {
5609 if (!(filp
->f_mode
& FMODE_READ
))
5613 if (!(filp
->f_mode
& FMODE_WRITE
))
5618 status
= nfs4_proc_setlk(state
, cmd
, request
);
5619 if ((status
!= -EAGAIN
) || IS_SETLK(cmd
))
5621 timeout
= nfs4_set_lock_task_retry(timeout
);
5622 status
= -ERESTARTSYS
;
5625 } while(status
< 0);
5629 int nfs4_lock_delegation_recall(struct file_lock
*fl
, struct nfs4_state
*state
, const nfs4_stateid
*stateid
)
5631 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
5634 err
= nfs4_set_lock_state(state
, fl
);
5637 err
= _nfs4_do_setlk(state
, F_SETLK
, fl
, NFS_LOCK_NEW
);
5638 return nfs4_handle_delegation_recall_error(server
, state
, stateid
, err
);
5641 struct nfs_release_lockowner_data
{
5642 struct nfs4_lock_state
*lsp
;
5643 struct nfs_server
*server
;
5644 struct nfs_release_lockowner_args args
;
5647 static void nfs4_release_lockowner_release(void *calldata
)
5649 struct nfs_release_lockowner_data
*data
= calldata
;
5650 nfs4_free_lock_state(data
->server
, data
->lsp
);
5654 static const struct rpc_call_ops nfs4_release_lockowner_ops
= {
5655 .rpc_release
= nfs4_release_lockowner_release
,
5658 static int nfs4_release_lockowner(struct nfs_server
*server
, struct nfs4_lock_state
*lsp
)
5660 struct nfs_release_lockowner_data
*data
;
5661 struct rpc_message msg
= {
5662 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RELEASE_LOCKOWNER
],
5665 if (server
->nfs_client
->cl_mvops
->minor_version
!= 0)
5667 data
= kmalloc(sizeof(*data
), GFP_NOFS
);
5671 data
->server
= server
;
5672 data
->args
.lock_owner
.clientid
= server
->nfs_client
->cl_clientid
;
5673 data
->args
.lock_owner
.id
= lsp
->ls_seqid
.owner_id
;
5674 data
->args
.lock_owner
.s_dev
= server
->s_dev
;
5675 msg
.rpc_argp
= &data
->args
;
5676 rpc_call_async(server
->client
, &msg
, 0, &nfs4_release_lockowner_ops
, data
);
5680 #define XATTR_NAME_NFSV4_ACL "system.nfs4_acl"
5682 static int nfs4_xattr_set_nfs4_acl(struct dentry
*dentry
, const char *key
,
5683 const void *buf
, size_t buflen
,
5684 int flags
, int type
)
5686 if (strcmp(key
, "") != 0)
5689 return nfs4_proc_set_acl(dentry
->d_inode
, buf
, buflen
);
5692 static int nfs4_xattr_get_nfs4_acl(struct dentry
*dentry
, const char *key
,
5693 void *buf
, size_t buflen
, int type
)
5695 if (strcmp(key
, "") != 0)
5698 return nfs4_proc_get_acl(dentry
->d_inode
, buf
, buflen
);
5701 static size_t nfs4_xattr_list_nfs4_acl(struct dentry
*dentry
, char *list
,
5702 size_t list_len
, const char *name
,
5703 size_t name_len
, int type
)
5705 size_t len
= sizeof(XATTR_NAME_NFSV4_ACL
);
5707 if (!nfs4_server_supports_acls(NFS_SERVER(dentry
->d_inode
)))
5710 if (list
&& len
<= list_len
)
5711 memcpy(list
, XATTR_NAME_NFSV4_ACL
, len
);
5715 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
5716 static inline int nfs4_server_supports_labels(struct nfs_server
*server
)
5718 return server
->caps
& NFS_CAP_SECURITY_LABEL
;
5721 static int nfs4_xattr_set_nfs4_label(struct dentry
*dentry
, const char *key
,
5722 const void *buf
, size_t buflen
,
5723 int flags
, int type
)
5725 if (security_ismaclabel(key
))
5726 return nfs4_set_security_label(dentry
, buf
, buflen
);
5731 static int nfs4_xattr_get_nfs4_label(struct dentry
*dentry
, const char *key
,
5732 void *buf
, size_t buflen
, int type
)
5734 if (security_ismaclabel(key
))
5735 return nfs4_get_security_label(dentry
->d_inode
, buf
, buflen
);
5739 static size_t nfs4_xattr_list_nfs4_label(struct dentry
*dentry
, char *list
,
5740 size_t list_len
, const char *name
,
5741 size_t name_len
, int type
)
5745 if (nfs_server_capable(dentry
->d_inode
, NFS_CAP_SECURITY_LABEL
)) {
5746 len
= security_inode_listsecurity(dentry
->d_inode
, NULL
, 0);
5747 if (list
&& len
<= list_len
)
5748 security_inode_listsecurity(dentry
->d_inode
, list
, len
);
5753 static const struct xattr_handler nfs4_xattr_nfs4_label_handler
= {
5754 .prefix
= XATTR_SECURITY_PREFIX
,
5755 .list
= nfs4_xattr_list_nfs4_label
,
5756 .get
= nfs4_xattr_get_nfs4_label
,
5757 .set
= nfs4_xattr_set_nfs4_label
,
5763 * nfs_fhget will use either the mounted_on_fileid or the fileid
5765 static void nfs_fixup_referral_attributes(struct nfs_fattr
*fattr
)
5767 if (!(((fattr
->valid
& NFS_ATTR_FATTR_MOUNTED_ON_FILEID
) ||
5768 (fattr
->valid
& NFS_ATTR_FATTR_FILEID
)) &&
5769 (fattr
->valid
& NFS_ATTR_FATTR_FSID
) &&
5770 (fattr
->valid
& NFS_ATTR_FATTR_V4_LOCATIONS
)))
5773 fattr
->valid
|= NFS_ATTR_FATTR_TYPE
| NFS_ATTR_FATTR_MODE
|
5774 NFS_ATTR_FATTR_NLINK
| NFS_ATTR_FATTR_V4_REFERRAL
;
5775 fattr
->mode
= S_IFDIR
| S_IRUGO
| S_IXUGO
;
5779 static int _nfs4_proc_fs_locations(struct rpc_clnt
*client
, struct inode
*dir
,
5780 const struct qstr
*name
,
5781 struct nfs4_fs_locations
*fs_locations
,
5784 struct nfs_server
*server
= NFS_SERVER(dir
);
5786 [0] = FATTR4_WORD0_FSID
| FATTR4_WORD0_FS_LOCATIONS
,
5788 struct nfs4_fs_locations_arg args
= {
5789 .dir_fh
= NFS_FH(dir
),
5794 struct nfs4_fs_locations_res res
= {
5795 .fs_locations
= fs_locations
,
5797 struct rpc_message msg
= {
5798 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FS_LOCATIONS
],
5804 dprintk("%s: start\n", __func__
);
5806 /* Ask for the fileid of the absent filesystem if mounted_on_fileid
5807 * is not supported */
5808 if (NFS_SERVER(dir
)->attr_bitmask
[1] & FATTR4_WORD1_MOUNTED_ON_FILEID
)
5809 bitmask
[1] |= FATTR4_WORD1_MOUNTED_ON_FILEID
;
5811 bitmask
[0] |= FATTR4_WORD0_FILEID
;
5813 nfs_fattr_init(&fs_locations
->fattr
);
5814 fs_locations
->server
= server
;
5815 fs_locations
->nlocations
= 0;
5816 status
= nfs4_call_sync(client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
5817 dprintk("%s: returned status = %d\n", __func__
, status
);
5821 int nfs4_proc_fs_locations(struct rpc_clnt
*client
, struct inode
*dir
,
5822 const struct qstr
*name
,
5823 struct nfs4_fs_locations
*fs_locations
,
5826 struct nfs4_exception exception
= { };
5829 err
= _nfs4_proc_fs_locations(client
, dir
, name
,
5830 fs_locations
, page
);
5831 trace_nfs4_get_fs_locations(dir
, name
, err
);
5832 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
5834 } while (exception
.retry
);
5839 * Use the state managment nfs_client cl_rpcclient, which uses krb5i (if
5840 * possible) as per RFC3530bis and RFC5661 Security Considerations sections
5842 static int _nfs4_proc_secinfo(struct inode
*dir
, const struct qstr
*name
, struct nfs4_secinfo_flavors
*flavors
)
5845 struct nfs4_secinfo_arg args
= {
5846 .dir_fh
= NFS_FH(dir
),
5849 struct nfs4_secinfo_res res
= {
5852 struct rpc_message msg
= {
5853 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SECINFO
],
5857 struct rpc_clnt
*clnt
= NFS_SERVER(dir
)->nfs_client
->cl_rpcclient
;
5859 dprintk("NFS call secinfo %s\n", name
->name
);
5860 status
= nfs4_call_sync(clnt
, NFS_SERVER(dir
), &msg
, &args
.seq_args
, &res
.seq_res
, 0);
5861 dprintk("NFS reply secinfo: %d\n", status
);
5865 int nfs4_proc_secinfo(struct inode
*dir
, const struct qstr
*name
,
5866 struct nfs4_secinfo_flavors
*flavors
)
5868 struct nfs4_exception exception
= { };
5871 err
= _nfs4_proc_secinfo(dir
, name
, flavors
);
5872 trace_nfs4_secinfo(dir
, name
, err
);
5873 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
5875 } while (exception
.retry
);
5879 #ifdef CONFIG_NFS_V4_1
5881 * Check the exchange flags returned by the server for invalid flags, having
5882 * both PNFS and NON_PNFS flags set, and not having one of NON_PNFS, PNFS, or
5885 static int nfs4_check_cl_exchange_flags(u32 flags
)
5887 if (flags
& ~EXCHGID4_FLAG_MASK_R
)
5889 if ((flags
& EXCHGID4_FLAG_USE_PNFS_MDS
) &&
5890 (flags
& EXCHGID4_FLAG_USE_NON_PNFS
))
5892 if (!(flags
& (EXCHGID4_FLAG_MASK_PNFS
)))
5896 return -NFS4ERR_INVAL
;
5900 nfs41_same_server_scope(struct nfs41_server_scope
*a
,
5901 struct nfs41_server_scope
*b
)
5903 if (a
->server_scope_sz
== b
->server_scope_sz
&&
5904 memcmp(a
->server_scope
, b
->server_scope
, a
->server_scope_sz
) == 0)
5911 * nfs4_proc_bind_conn_to_session()
5913 * The 4.1 client currently uses the same TCP connection for the
5914 * fore and backchannel.
5916 int nfs4_proc_bind_conn_to_session(struct nfs_client
*clp
, struct rpc_cred
*cred
)
5919 struct nfs41_bind_conn_to_session_res res
;
5920 struct rpc_message msg
= {
5922 &nfs4_procedures
[NFSPROC4_CLNT_BIND_CONN_TO_SESSION
],
5928 dprintk("--> %s\n", __func__
);
5930 res
.session
= kzalloc(sizeof(struct nfs4_session
), GFP_NOFS
);
5931 if (unlikely(res
.session
== NULL
)) {
5936 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
5937 trace_nfs4_bind_conn_to_session(clp
, status
);
5939 if (memcmp(res
.session
->sess_id
.data
,
5940 clp
->cl_session
->sess_id
.data
, NFS4_MAX_SESSIONID_LEN
)) {
5941 dprintk("NFS: %s: Session ID mismatch\n", __func__
);
5945 if (res
.dir
!= NFS4_CDFS4_BOTH
) {
5946 dprintk("NFS: %s: Unexpected direction from server\n",
5951 if (res
.use_conn_in_rdma_mode
) {
5952 dprintk("NFS: %s: Server returned RDMA mode = true\n",
5961 dprintk("<-- %s status= %d\n", __func__
, status
);
5966 * nfs4_proc_exchange_id()
5968 * Returns zero, a negative errno, or a negative NFS4ERR status code.
5970 * Since the clientid has expired, all compounds using sessions
5971 * associated with the stale clientid will be returning
5972 * NFS4ERR_BADSESSION in the sequence operation, and will therefore
5973 * be in some phase of session reset.
5975 int nfs4_proc_exchange_id(struct nfs_client
*clp
, struct rpc_cred
*cred
)
5977 nfs4_verifier verifier
;
5978 struct nfs41_exchange_id_args args
= {
5979 .verifier
= &verifier
,
5981 .flags
= EXCHGID4_FLAG_SUPP_MOVED_REFER
|
5982 EXCHGID4_FLAG_BIND_PRINC_STATEID
,
5984 struct nfs41_exchange_id_res res
= {
5988 struct rpc_message msg
= {
5989 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_EXCHANGE_ID
],
5995 nfs4_init_boot_verifier(clp
, &verifier
);
5996 args
.id_len
= nfs4_init_uniform_client_string(clp
, args
.id
,
5998 dprintk("NFS call exchange_id auth=%s, '%.*s'\n",
5999 clp
->cl_rpcclient
->cl_auth
->au_ops
->au_name
,
6000 args
.id_len
, args
.id
);
6002 res
.server_owner
= kzalloc(sizeof(struct nfs41_server_owner
),
6004 if (unlikely(res
.server_owner
== NULL
)) {
6009 res
.server_scope
= kzalloc(sizeof(struct nfs41_server_scope
),
6011 if (unlikely(res
.server_scope
== NULL
)) {
6013 goto out_server_owner
;
6016 res
.impl_id
= kzalloc(sizeof(struct nfs41_impl_id
), GFP_NOFS
);
6017 if (unlikely(res
.impl_id
== NULL
)) {
6019 goto out_server_scope
;
6022 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
6023 trace_nfs4_exchange_id(clp
, status
);
6025 status
= nfs4_check_cl_exchange_flags(res
.flags
);
6028 clp
->cl_clientid
= res
.clientid
;
6029 clp
->cl_exchange_flags
= (res
.flags
& ~EXCHGID4_FLAG_CONFIRMED_R
);
6030 if (!(res
.flags
& EXCHGID4_FLAG_CONFIRMED_R
))
6031 clp
->cl_seqid
= res
.seqid
;
6033 kfree(clp
->cl_serverowner
);
6034 clp
->cl_serverowner
= res
.server_owner
;
6035 res
.server_owner
= NULL
;
6037 /* use the most recent implementation id */
6038 kfree(clp
->cl_implid
);
6039 clp
->cl_implid
= res
.impl_id
;
6041 if (clp
->cl_serverscope
!= NULL
&&
6042 !nfs41_same_server_scope(clp
->cl_serverscope
,
6043 res
.server_scope
)) {
6044 dprintk("%s: server_scope mismatch detected\n",
6046 set_bit(NFS4CLNT_SERVER_SCOPE_MISMATCH
, &clp
->cl_state
);
6047 kfree(clp
->cl_serverscope
);
6048 clp
->cl_serverscope
= NULL
;
6051 if (clp
->cl_serverscope
== NULL
) {
6052 clp
->cl_serverscope
= res
.server_scope
;
6059 kfree(res
.server_owner
);
6061 kfree(res
.server_scope
);
6063 if (clp
->cl_implid
!= NULL
)
6064 dprintk("NFS reply exchange_id: Server Implementation ID: "
6065 "domain: %s, name: %s, date: %llu,%u\n",
6066 clp
->cl_implid
->domain
, clp
->cl_implid
->name
,
6067 clp
->cl_implid
->date
.seconds
,
6068 clp
->cl_implid
->date
.nseconds
);
6069 dprintk("NFS reply exchange_id: %d\n", status
);
6073 static int _nfs4_proc_destroy_clientid(struct nfs_client
*clp
,
6074 struct rpc_cred
*cred
)
6076 struct rpc_message msg
= {
6077 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DESTROY_CLIENTID
],
6083 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
6084 trace_nfs4_destroy_clientid(clp
, status
);
6086 dprintk("NFS: Got error %d from the server %s on "
6087 "DESTROY_CLIENTID.", status
, clp
->cl_hostname
);
6091 static int nfs4_proc_destroy_clientid(struct nfs_client
*clp
,
6092 struct rpc_cred
*cred
)
6097 for (loop
= NFS4_MAX_LOOP_ON_RECOVER
; loop
!= 0; loop
--) {
6098 ret
= _nfs4_proc_destroy_clientid(clp
, cred
);
6100 case -NFS4ERR_DELAY
:
6101 case -NFS4ERR_CLIENTID_BUSY
:
6111 int nfs4_destroy_clientid(struct nfs_client
*clp
)
6113 struct rpc_cred
*cred
;
6116 if (clp
->cl_mvops
->minor_version
< 1)
6118 if (clp
->cl_exchange_flags
== 0)
6120 if (clp
->cl_preserve_clid
)
6122 cred
= nfs4_get_clid_cred(clp
);
6123 ret
= nfs4_proc_destroy_clientid(clp
, cred
);
6128 case -NFS4ERR_STALE_CLIENTID
:
6129 clp
->cl_exchange_flags
= 0;
6135 struct nfs4_get_lease_time_data
{
6136 struct nfs4_get_lease_time_args
*args
;
6137 struct nfs4_get_lease_time_res
*res
;
6138 struct nfs_client
*clp
;
6141 static void nfs4_get_lease_time_prepare(struct rpc_task
*task
,
6144 struct nfs4_get_lease_time_data
*data
=
6145 (struct nfs4_get_lease_time_data
*)calldata
;
6147 dprintk("--> %s\n", __func__
);
6148 /* just setup sequence, do not trigger session recovery
6149 since we're invoked within one */
6150 nfs41_setup_sequence(data
->clp
->cl_session
,
6151 &data
->args
->la_seq_args
,
6152 &data
->res
->lr_seq_res
,
6154 dprintk("<-- %s\n", __func__
);
6158 * Called from nfs4_state_manager thread for session setup, so don't recover
6159 * from sequence operation or clientid errors.
6161 static void nfs4_get_lease_time_done(struct rpc_task
*task
, void *calldata
)
6163 struct nfs4_get_lease_time_data
*data
=
6164 (struct nfs4_get_lease_time_data
*)calldata
;
6166 dprintk("--> %s\n", __func__
);
6167 if (!nfs41_sequence_done(task
, &data
->res
->lr_seq_res
))
6169 switch (task
->tk_status
) {
6170 case -NFS4ERR_DELAY
:
6171 case -NFS4ERR_GRACE
:
6172 dprintk("%s Retry: tk_status %d\n", __func__
, task
->tk_status
);
6173 rpc_delay(task
, NFS4_POLL_RETRY_MIN
);
6174 task
->tk_status
= 0;
6176 case -NFS4ERR_RETRY_UNCACHED_REP
:
6177 rpc_restart_call_prepare(task
);
6180 dprintk("<-- %s\n", __func__
);
6183 static const struct rpc_call_ops nfs4_get_lease_time_ops
= {
6184 .rpc_call_prepare
= nfs4_get_lease_time_prepare
,
6185 .rpc_call_done
= nfs4_get_lease_time_done
,
6188 int nfs4_proc_get_lease_time(struct nfs_client
*clp
, struct nfs_fsinfo
*fsinfo
)
6190 struct rpc_task
*task
;
6191 struct nfs4_get_lease_time_args args
;
6192 struct nfs4_get_lease_time_res res
= {
6193 .lr_fsinfo
= fsinfo
,
6195 struct nfs4_get_lease_time_data data
= {
6200 struct rpc_message msg
= {
6201 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GET_LEASE_TIME
],
6205 struct rpc_task_setup task_setup
= {
6206 .rpc_client
= clp
->cl_rpcclient
,
6207 .rpc_message
= &msg
,
6208 .callback_ops
= &nfs4_get_lease_time_ops
,
6209 .callback_data
= &data
,
6210 .flags
= RPC_TASK_TIMEOUT
,
6214 nfs41_init_sequence(&args
.la_seq_args
, &res
.lr_seq_res
, 0);
6215 nfs4_set_sequence_privileged(&args
.la_seq_args
);
6216 dprintk("--> %s\n", __func__
);
6217 task
= rpc_run_task(&task_setup
);
6220 status
= PTR_ERR(task
);
6222 status
= task
->tk_status
;
6225 dprintk("<-- %s return %d\n", __func__
, status
);
6231 * Initialize the values to be used by the client in CREATE_SESSION
6232 * If nfs4_init_session set the fore channel request and response sizes,
6235 * Set the back channel max_resp_sz_cached to zero to force the client to
6236 * always set csa_cachethis to FALSE because the current implementation
6237 * of the back channel DRC only supports caching the CB_SEQUENCE operation.
6239 static void nfs4_init_channel_attrs(struct nfs41_create_session_args
*args
)
6241 unsigned int max_rqst_sz
, max_resp_sz
;
6243 max_rqst_sz
= NFS_MAX_FILE_IO_SIZE
+ nfs41_maxwrite_overhead
;
6244 max_resp_sz
= NFS_MAX_FILE_IO_SIZE
+ nfs41_maxread_overhead
;
6246 /* Fore channel attributes */
6247 args
->fc_attrs
.max_rqst_sz
= max_rqst_sz
;
6248 args
->fc_attrs
.max_resp_sz
= max_resp_sz
;
6249 args
->fc_attrs
.max_ops
= NFS4_MAX_OPS
;
6250 args
->fc_attrs
.max_reqs
= max_session_slots
;
6252 dprintk("%s: Fore Channel : max_rqst_sz=%u max_resp_sz=%u "
6253 "max_ops=%u max_reqs=%u\n",
6255 args
->fc_attrs
.max_rqst_sz
, args
->fc_attrs
.max_resp_sz
,
6256 args
->fc_attrs
.max_ops
, args
->fc_attrs
.max_reqs
);
6258 /* Back channel attributes */
6259 args
->bc_attrs
.max_rqst_sz
= PAGE_SIZE
;
6260 args
->bc_attrs
.max_resp_sz
= PAGE_SIZE
;
6261 args
->bc_attrs
.max_resp_sz_cached
= 0;
6262 args
->bc_attrs
.max_ops
= NFS4_MAX_BACK_CHANNEL_OPS
;
6263 args
->bc_attrs
.max_reqs
= 1;
6265 dprintk("%s: Back Channel : max_rqst_sz=%u max_resp_sz=%u "
6266 "max_resp_sz_cached=%u max_ops=%u max_reqs=%u\n",
6268 args
->bc_attrs
.max_rqst_sz
, args
->bc_attrs
.max_resp_sz
,
6269 args
->bc_attrs
.max_resp_sz_cached
, args
->bc_attrs
.max_ops
,
6270 args
->bc_attrs
.max_reqs
);
6273 static int nfs4_verify_fore_channel_attrs(struct nfs41_create_session_args
*args
, struct nfs4_session
*session
)
6275 struct nfs4_channel_attrs
*sent
= &args
->fc_attrs
;
6276 struct nfs4_channel_attrs
*rcvd
= &session
->fc_attrs
;
6278 if (rcvd
->max_resp_sz
> sent
->max_resp_sz
)
6281 * Our requested max_ops is the minimum we need; we're not
6282 * prepared to break up compounds into smaller pieces than that.
6283 * So, no point even trying to continue if the server won't
6286 if (rcvd
->max_ops
< sent
->max_ops
)
6288 if (rcvd
->max_reqs
== 0)
6290 if (rcvd
->max_reqs
> NFS4_MAX_SLOT_TABLE
)
6291 rcvd
->max_reqs
= NFS4_MAX_SLOT_TABLE
;
6295 static int nfs4_verify_back_channel_attrs(struct nfs41_create_session_args
*args
, struct nfs4_session
*session
)
6297 struct nfs4_channel_attrs
*sent
= &args
->bc_attrs
;
6298 struct nfs4_channel_attrs
*rcvd
= &session
->bc_attrs
;
6300 if (rcvd
->max_rqst_sz
> sent
->max_rqst_sz
)
6302 if (rcvd
->max_resp_sz
< sent
->max_resp_sz
)
6304 if (rcvd
->max_resp_sz_cached
> sent
->max_resp_sz_cached
)
6306 /* These would render the backchannel useless: */
6307 if (rcvd
->max_ops
!= sent
->max_ops
)
6309 if (rcvd
->max_reqs
!= sent
->max_reqs
)
6314 static int nfs4_verify_channel_attrs(struct nfs41_create_session_args
*args
,
6315 struct nfs4_session
*session
)
6319 ret
= nfs4_verify_fore_channel_attrs(args
, session
);
6322 return nfs4_verify_back_channel_attrs(args
, session
);
6325 static int _nfs4_proc_create_session(struct nfs_client
*clp
,
6326 struct rpc_cred
*cred
)
6328 struct nfs4_session
*session
= clp
->cl_session
;
6329 struct nfs41_create_session_args args
= {
6331 .cb_program
= NFS4_CALLBACK
,
6333 struct nfs41_create_session_res res
= {
6336 struct rpc_message msg
= {
6337 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CREATE_SESSION
],
6344 nfs4_init_channel_attrs(&args
);
6345 args
.flags
= (SESSION4_PERSIST
| SESSION4_BACK_CHAN
);
6347 status
= rpc_call_sync(session
->clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
6348 trace_nfs4_create_session(clp
, status
);
6351 /* Verify the session's negotiated channel_attrs values */
6352 status
= nfs4_verify_channel_attrs(&args
, session
);
6353 /* Increment the clientid slot sequence id */
6361 * Issues a CREATE_SESSION operation to the server.
6362 * It is the responsibility of the caller to verify the session is
6363 * expired before calling this routine.
6365 int nfs4_proc_create_session(struct nfs_client
*clp
, struct rpc_cred
*cred
)
6369 struct nfs4_session
*session
= clp
->cl_session
;
6371 dprintk("--> %s clp=%p session=%p\n", __func__
, clp
, session
);
6373 status
= _nfs4_proc_create_session(clp
, cred
);
6377 /* Init or reset the session slot tables */
6378 status
= nfs4_setup_session_slot_tables(session
);
6379 dprintk("slot table setup returned %d\n", status
);
6383 ptr
= (unsigned *)&session
->sess_id
.data
[0];
6384 dprintk("%s client>seqid %d sessionid %u:%u:%u:%u\n", __func__
,
6385 clp
->cl_seqid
, ptr
[0], ptr
[1], ptr
[2], ptr
[3]);
6387 dprintk("<-- %s\n", __func__
);
6392 * Issue the over-the-wire RPC DESTROY_SESSION.
6393 * The caller must serialize access to this routine.
6395 int nfs4_proc_destroy_session(struct nfs4_session
*session
,
6396 struct rpc_cred
*cred
)
6398 struct rpc_message msg
= {
6399 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DESTROY_SESSION
],
6400 .rpc_argp
= session
,
6405 dprintk("--> nfs4_proc_destroy_session\n");
6407 /* session is still being setup */
6408 if (session
->clp
->cl_cons_state
!= NFS_CS_READY
)
6411 status
= rpc_call_sync(session
->clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
6412 trace_nfs4_destroy_session(session
->clp
, status
);
6415 dprintk("NFS: Got error %d from the server on DESTROY_SESSION. "
6416 "Session has been destroyed regardless...\n", status
);
6418 dprintk("<-- nfs4_proc_destroy_session\n");
6423 * Renew the cl_session lease.
6425 struct nfs4_sequence_data
{
6426 struct nfs_client
*clp
;
6427 struct nfs4_sequence_args args
;
6428 struct nfs4_sequence_res res
;
6431 static void nfs41_sequence_release(void *data
)
6433 struct nfs4_sequence_data
*calldata
= data
;
6434 struct nfs_client
*clp
= calldata
->clp
;
6436 if (atomic_read(&clp
->cl_count
) > 1)
6437 nfs4_schedule_state_renewal(clp
);
6438 nfs_put_client(clp
);
6442 static int nfs41_sequence_handle_errors(struct rpc_task
*task
, struct nfs_client
*clp
)
6444 switch(task
->tk_status
) {
6445 case -NFS4ERR_DELAY
:
6446 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
6449 nfs4_schedule_lease_recovery(clp
);
6454 static void nfs41_sequence_call_done(struct rpc_task
*task
, void *data
)
6456 struct nfs4_sequence_data
*calldata
= data
;
6457 struct nfs_client
*clp
= calldata
->clp
;
6459 if (!nfs41_sequence_done(task
, task
->tk_msg
.rpc_resp
))
6462 trace_nfs4_sequence(clp
, task
->tk_status
);
6463 if (task
->tk_status
< 0) {
6464 dprintk("%s ERROR %d\n", __func__
, task
->tk_status
);
6465 if (atomic_read(&clp
->cl_count
) == 1)
6468 if (nfs41_sequence_handle_errors(task
, clp
) == -EAGAIN
) {
6469 rpc_restart_call_prepare(task
);
6473 dprintk("%s rpc_cred %p\n", __func__
, task
->tk_msg
.rpc_cred
);
6475 dprintk("<-- %s\n", __func__
);
6478 static void nfs41_sequence_prepare(struct rpc_task
*task
, void *data
)
6480 struct nfs4_sequence_data
*calldata
= data
;
6481 struct nfs_client
*clp
= calldata
->clp
;
6482 struct nfs4_sequence_args
*args
;
6483 struct nfs4_sequence_res
*res
;
6485 args
= task
->tk_msg
.rpc_argp
;
6486 res
= task
->tk_msg
.rpc_resp
;
6488 nfs41_setup_sequence(clp
->cl_session
, args
, res
, task
);
6491 static const struct rpc_call_ops nfs41_sequence_ops
= {
6492 .rpc_call_done
= nfs41_sequence_call_done
,
6493 .rpc_call_prepare
= nfs41_sequence_prepare
,
6494 .rpc_release
= nfs41_sequence_release
,
6497 static struct rpc_task
*_nfs41_proc_sequence(struct nfs_client
*clp
,
6498 struct rpc_cred
*cred
,
6501 struct nfs4_sequence_data
*calldata
;
6502 struct rpc_message msg
= {
6503 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SEQUENCE
],
6506 struct rpc_task_setup task_setup_data
= {
6507 .rpc_client
= clp
->cl_rpcclient
,
6508 .rpc_message
= &msg
,
6509 .callback_ops
= &nfs41_sequence_ops
,
6510 .flags
= RPC_TASK_ASYNC
| RPC_TASK_TIMEOUT
,
6513 if (!atomic_inc_not_zero(&clp
->cl_count
))
6514 return ERR_PTR(-EIO
);
6515 calldata
= kzalloc(sizeof(*calldata
), GFP_NOFS
);
6516 if (calldata
== NULL
) {
6517 nfs_put_client(clp
);
6518 return ERR_PTR(-ENOMEM
);
6520 nfs41_init_sequence(&calldata
->args
, &calldata
->res
, 0);
6522 nfs4_set_sequence_privileged(&calldata
->args
);
6523 msg
.rpc_argp
= &calldata
->args
;
6524 msg
.rpc_resp
= &calldata
->res
;
6525 calldata
->clp
= clp
;
6526 task_setup_data
.callback_data
= calldata
;
6528 return rpc_run_task(&task_setup_data
);
6531 static int nfs41_proc_async_sequence(struct nfs_client
*clp
, struct rpc_cred
*cred
, unsigned renew_flags
)
6533 struct rpc_task
*task
;
6536 if ((renew_flags
& NFS4_RENEW_TIMEOUT
) == 0)
6538 task
= _nfs41_proc_sequence(clp
, cred
, false);
6540 ret
= PTR_ERR(task
);
6542 rpc_put_task_async(task
);
6543 dprintk("<-- %s status=%d\n", __func__
, ret
);
6547 static int nfs4_proc_sequence(struct nfs_client
*clp
, struct rpc_cred
*cred
)
6549 struct rpc_task
*task
;
6552 task
= _nfs41_proc_sequence(clp
, cred
, true);
6554 ret
= PTR_ERR(task
);
6557 ret
= rpc_wait_for_completion_task(task
);
6559 struct nfs4_sequence_res
*res
= task
->tk_msg
.rpc_resp
;
6561 if (task
->tk_status
== 0)
6562 nfs41_handle_sequence_flag_errors(clp
, res
->sr_status_flags
);
6563 ret
= task
->tk_status
;
6567 dprintk("<-- %s status=%d\n", __func__
, ret
);
6571 struct nfs4_reclaim_complete_data
{
6572 struct nfs_client
*clp
;
6573 struct nfs41_reclaim_complete_args arg
;
6574 struct nfs41_reclaim_complete_res res
;
6577 static void nfs4_reclaim_complete_prepare(struct rpc_task
*task
, void *data
)
6579 struct nfs4_reclaim_complete_data
*calldata
= data
;
6581 nfs41_setup_sequence(calldata
->clp
->cl_session
,
6582 &calldata
->arg
.seq_args
,
6583 &calldata
->res
.seq_res
,
6587 static int nfs41_reclaim_complete_handle_errors(struct rpc_task
*task
, struct nfs_client
*clp
)
6589 switch(task
->tk_status
) {
6591 case -NFS4ERR_COMPLETE_ALREADY
:
6592 case -NFS4ERR_WRONG_CRED
: /* What to do here? */
6594 case -NFS4ERR_DELAY
:
6595 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
6597 case -NFS4ERR_RETRY_UNCACHED_REP
:
6600 nfs4_schedule_lease_recovery(clp
);
6605 static void nfs4_reclaim_complete_done(struct rpc_task
*task
, void *data
)
6607 struct nfs4_reclaim_complete_data
*calldata
= data
;
6608 struct nfs_client
*clp
= calldata
->clp
;
6609 struct nfs4_sequence_res
*res
= &calldata
->res
.seq_res
;
6611 dprintk("--> %s\n", __func__
);
6612 if (!nfs41_sequence_done(task
, res
))
6615 trace_nfs4_reclaim_complete(clp
, task
->tk_status
);
6616 if (nfs41_reclaim_complete_handle_errors(task
, clp
) == -EAGAIN
) {
6617 rpc_restart_call_prepare(task
);
6620 dprintk("<-- %s\n", __func__
);
6623 static void nfs4_free_reclaim_complete_data(void *data
)
6625 struct nfs4_reclaim_complete_data
*calldata
= data
;
6630 static const struct rpc_call_ops nfs4_reclaim_complete_call_ops
= {
6631 .rpc_call_prepare
= nfs4_reclaim_complete_prepare
,
6632 .rpc_call_done
= nfs4_reclaim_complete_done
,
6633 .rpc_release
= nfs4_free_reclaim_complete_data
,
6637 * Issue a global reclaim complete.
6639 static int nfs41_proc_reclaim_complete(struct nfs_client
*clp
,
6640 struct rpc_cred
*cred
)
6642 struct nfs4_reclaim_complete_data
*calldata
;
6643 struct rpc_task
*task
;
6644 struct rpc_message msg
= {
6645 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RECLAIM_COMPLETE
],
6648 struct rpc_task_setup task_setup_data
= {
6649 .rpc_client
= clp
->cl_rpcclient
,
6650 .rpc_message
= &msg
,
6651 .callback_ops
= &nfs4_reclaim_complete_call_ops
,
6652 .flags
= RPC_TASK_ASYNC
,
6654 int status
= -ENOMEM
;
6656 dprintk("--> %s\n", __func__
);
6657 calldata
= kzalloc(sizeof(*calldata
), GFP_NOFS
);
6658 if (calldata
== NULL
)
6660 calldata
->clp
= clp
;
6661 calldata
->arg
.one_fs
= 0;
6663 nfs41_init_sequence(&calldata
->arg
.seq_args
, &calldata
->res
.seq_res
, 0);
6664 nfs4_set_sequence_privileged(&calldata
->arg
.seq_args
);
6665 msg
.rpc_argp
= &calldata
->arg
;
6666 msg
.rpc_resp
= &calldata
->res
;
6667 task_setup_data
.callback_data
= calldata
;
6668 task
= rpc_run_task(&task_setup_data
);
6670 status
= PTR_ERR(task
);
6673 status
= nfs4_wait_for_completion_rpc_task(task
);
6675 status
= task
->tk_status
;
6679 dprintk("<-- %s status=%d\n", __func__
, status
);
6684 nfs4_layoutget_prepare(struct rpc_task
*task
, void *calldata
)
6686 struct nfs4_layoutget
*lgp
= calldata
;
6687 struct nfs_server
*server
= NFS_SERVER(lgp
->args
.inode
);
6688 struct nfs4_session
*session
= nfs4_get_session(server
);
6690 dprintk("--> %s\n", __func__
);
6691 /* Note the is a race here, where a CB_LAYOUTRECALL can come in
6692 * right now covering the LAYOUTGET we are about to send.
6693 * However, that is not so catastrophic, and there seems
6694 * to be no way to prevent it completely.
6696 if (nfs41_setup_sequence(session
, &lgp
->args
.seq_args
,
6697 &lgp
->res
.seq_res
, task
))
6699 if (pnfs_choose_layoutget_stateid(&lgp
->args
.stateid
,
6700 NFS_I(lgp
->args
.inode
)->layout
,
6701 lgp
->args
.ctx
->state
)) {
6702 rpc_exit(task
, NFS4_OK
);
6706 static void nfs4_layoutget_done(struct rpc_task
*task
, void *calldata
)
6708 struct nfs4_layoutget
*lgp
= calldata
;
6709 struct inode
*inode
= lgp
->args
.inode
;
6710 struct nfs_server
*server
= NFS_SERVER(inode
);
6711 struct pnfs_layout_hdr
*lo
;
6712 struct nfs4_state
*state
= NULL
;
6713 unsigned long timeo
, giveup
;
6715 dprintk("--> %s\n", __func__
);
6717 if (!nfs41_sequence_done(task
, &lgp
->res
.seq_res
))
6720 switch (task
->tk_status
) {
6723 case -NFS4ERR_LAYOUTTRYLATER
:
6724 case -NFS4ERR_RECALLCONFLICT
:
6725 timeo
= rpc_get_timeout(task
->tk_client
);
6726 giveup
= lgp
->args
.timestamp
+ timeo
;
6727 if (time_after(giveup
, jiffies
))
6728 task
->tk_status
= -NFS4ERR_DELAY
;
6730 case -NFS4ERR_EXPIRED
:
6731 case -NFS4ERR_BAD_STATEID
:
6732 spin_lock(&inode
->i_lock
);
6733 lo
= NFS_I(inode
)->layout
;
6734 if (!lo
|| list_empty(&lo
->plh_segs
)) {
6735 spin_unlock(&inode
->i_lock
);
6736 /* If the open stateid was bad, then recover it. */
6737 state
= lgp
->args
.ctx
->state
;
6741 pnfs_mark_matching_lsegs_invalid(lo
, &head
, NULL
);
6742 spin_unlock(&inode
->i_lock
);
6743 /* Mark the bad layout state as invalid, then
6744 * retry using the open stateid. */
6745 pnfs_free_lseg_list(&head
);
6748 if (nfs4_async_handle_error(task
, server
, state
) == -EAGAIN
)
6749 rpc_restart_call_prepare(task
);
6751 dprintk("<-- %s\n", __func__
);
6754 static size_t max_response_pages(struct nfs_server
*server
)
6756 u32 max_resp_sz
= server
->nfs_client
->cl_session
->fc_attrs
.max_resp_sz
;
6757 return nfs_page_array_len(0, max_resp_sz
);
6760 static void nfs4_free_pages(struct page
**pages
, size_t size
)
6767 for (i
= 0; i
< size
; i
++) {
6770 __free_page(pages
[i
]);
6775 static struct page
**nfs4_alloc_pages(size_t size
, gfp_t gfp_flags
)
6777 struct page
**pages
;
6780 pages
= kcalloc(size
, sizeof(struct page
*), gfp_flags
);
6782 dprintk("%s: can't alloc array of %zu pages\n", __func__
, size
);
6786 for (i
= 0; i
< size
; i
++) {
6787 pages
[i
] = alloc_page(gfp_flags
);
6789 dprintk("%s: failed to allocate page\n", __func__
);
6790 nfs4_free_pages(pages
, size
);
6798 static void nfs4_layoutget_release(void *calldata
)
6800 struct nfs4_layoutget
*lgp
= calldata
;
6801 struct inode
*inode
= lgp
->args
.inode
;
6802 struct nfs_server
*server
= NFS_SERVER(inode
);
6803 size_t max_pages
= max_response_pages(server
);
6805 dprintk("--> %s\n", __func__
);
6806 nfs4_free_pages(lgp
->args
.layout
.pages
, max_pages
);
6807 pnfs_put_layout_hdr(NFS_I(inode
)->layout
);
6808 put_nfs_open_context(lgp
->args
.ctx
);
6810 dprintk("<-- %s\n", __func__
);
6813 static const struct rpc_call_ops nfs4_layoutget_call_ops
= {
6814 .rpc_call_prepare
= nfs4_layoutget_prepare
,
6815 .rpc_call_done
= nfs4_layoutget_done
,
6816 .rpc_release
= nfs4_layoutget_release
,
6819 struct pnfs_layout_segment
*
6820 nfs4_proc_layoutget(struct nfs4_layoutget
*lgp
, gfp_t gfp_flags
)
6822 struct inode
*inode
= lgp
->args
.inode
;
6823 struct nfs_server
*server
= NFS_SERVER(inode
);
6824 size_t max_pages
= max_response_pages(server
);
6825 struct rpc_task
*task
;
6826 struct rpc_message msg
= {
6827 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LAYOUTGET
],
6828 .rpc_argp
= &lgp
->args
,
6829 .rpc_resp
= &lgp
->res
,
6830 .rpc_cred
= lgp
->cred
,
6832 struct rpc_task_setup task_setup_data
= {
6833 .rpc_client
= server
->client
,
6834 .rpc_message
= &msg
,
6835 .callback_ops
= &nfs4_layoutget_call_ops
,
6836 .callback_data
= lgp
,
6837 .flags
= RPC_TASK_ASYNC
,
6839 struct pnfs_layout_segment
*lseg
= NULL
;
6842 dprintk("--> %s\n", __func__
);
6844 lgp
->args
.layout
.pages
= nfs4_alloc_pages(max_pages
, gfp_flags
);
6845 if (!lgp
->args
.layout
.pages
) {
6846 nfs4_layoutget_release(lgp
);
6847 return ERR_PTR(-ENOMEM
);
6849 lgp
->args
.layout
.pglen
= max_pages
* PAGE_SIZE
;
6850 lgp
->args
.timestamp
= jiffies
;
6852 lgp
->res
.layoutp
= &lgp
->args
.layout
;
6853 lgp
->res
.seq_res
.sr_slot
= NULL
;
6854 nfs41_init_sequence(&lgp
->args
.seq_args
, &lgp
->res
.seq_res
, 0);
6856 /* nfs4_layoutget_release calls pnfs_put_layout_hdr */
6857 pnfs_get_layout_hdr(NFS_I(inode
)->layout
);
6859 task
= rpc_run_task(&task_setup_data
);
6861 return ERR_CAST(task
);
6862 status
= nfs4_wait_for_completion_rpc_task(task
);
6864 status
= task
->tk_status
;
6865 trace_nfs4_layoutget(lgp
->args
.ctx
,
6869 /* if layoutp->len is 0, nfs4_layoutget_prepare called rpc_exit */
6870 if (status
== 0 && lgp
->res
.layoutp
->len
)
6871 lseg
= pnfs_layout_process(lgp
);
6873 dprintk("<-- %s status=%d\n", __func__
, status
);
6875 return ERR_PTR(status
);
6880 nfs4_layoutreturn_prepare(struct rpc_task
*task
, void *calldata
)
6882 struct nfs4_layoutreturn
*lrp
= calldata
;
6884 dprintk("--> %s\n", __func__
);
6885 nfs41_setup_sequence(lrp
->clp
->cl_session
,
6886 &lrp
->args
.seq_args
,
6891 static void nfs4_layoutreturn_done(struct rpc_task
*task
, void *calldata
)
6893 struct nfs4_layoutreturn
*lrp
= calldata
;
6894 struct nfs_server
*server
;
6896 dprintk("--> %s\n", __func__
);
6898 if (!nfs41_sequence_done(task
, &lrp
->res
.seq_res
))
6901 server
= NFS_SERVER(lrp
->args
.inode
);
6902 if (nfs4_async_handle_error(task
, server
, NULL
) == -EAGAIN
) {
6903 rpc_restart_call_prepare(task
);
6906 dprintk("<-- %s\n", __func__
);
6909 static void nfs4_layoutreturn_release(void *calldata
)
6911 struct nfs4_layoutreturn
*lrp
= calldata
;
6912 struct pnfs_layout_hdr
*lo
= lrp
->args
.layout
;
6914 dprintk("--> %s\n", __func__
);
6915 spin_lock(&lo
->plh_inode
->i_lock
);
6916 if (lrp
->res
.lrs_present
)
6917 pnfs_set_layout_stateid(lo
, &lrp
->res
.stateid
, true);
6918 lo
->plh_block_lgets
--;
6919 spin_unlock(&lo
->plh_inode
->i_lock
);
6920 pnfs_put_layout_hdr(lrp
->args
.layout
);
6922 dprintk("<-- %s\n", __func__
);
6925 static const struct rpc_call_ops nfs4_layoutreturn_call_ops
= {
6926 .rpc_call_prepare
= nfs4_layoutreturn_prepare
,
6927 .rpc_call_done
= nfs4_layoutreturn_done
,
6928 .rpc_release
= nfs4_layoutreturn_release
,
6931 int nfs4_proc_layoutreturn(struct nfs4_layoutreturn
*lrp
)
6933 struct rpc_task
*task
;
6934 struct rpc_message msg
= {
6935 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LAYOUTRETURN
],
6936 .rpc_argp
= &lrp
->args
,
6937 .rpc_resp
= &lrp
->res
,
6938 .rpc_cred
= lrp
->cred
,
6940 struct rpc_task_setup task_setup_data
= {
6941 .rpc_client
= NFS_SERVER(lrp
->args
.inode
)->client
,
6942 .rpc_message
= &msg
,
6943 .callback_ops
= &nfs4_layoutreturn_call_ops
,
6944 .callback_data
= lrp
,
6948 dprintk("--> %s\n", __func__
);
6949 nfs41_init_sequence(&lrp
->args
.seq_args
, &lrp
->res
.seq_res
, 1);
6950 task
= rpc_run_task(&task_setup_data
);
6952 return PTR_ERR(task
);
6953 status
= task
->tk_status
;
6954 trace_nfs4_layoutreturn(lrp
->args
.inode
, status
);
6955 dprintk("<-- %s status=%d\n", __func__
, status
);
6961 * Retrieve the list of Data Server devices from the MDS.
6963 static int _nfs4_getdevicelist(struct nfs_server
*server
,
6964 const struct nfs_fh
*fh
,
6965 struct pnfs_devicelist
*devlist
)
6967 struct nfs4_getdevicelist_args args
= {
6969 .layoutclass
= server
->pnfs_curr_ld
->id
,
6971 struct nfs4_getdevicelist_res res
= {
6974 struct rpc_message msg
= {
6975 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETDEVICELIST
],
6981 dprintk("--> %s\n", __func__
);
6982 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
,
6984 dprintk("<-- %s status=%d\n", __func__
, status
);
6988 int nfs4_proc_getdevicelist(struct nfs_server
*server
,
6989 const struct nfs_fh
*fh
,
6990 struct pnfs_devicelist
*devlist
)
6992 struct nfs4_exception exception
= { };
6996 err
= nfs4_handle_exception(server
,
6997 _nfs4_getdevicelist(server
, fh
, devlist
),
6999 } while (exception
.retry
);
7001 dprintk("%s: err=%d, num_devs=%u\n", __func__
,
7002 err
, devlist
->num_devs
);
7006 EXPORT_SYMBOL_GPL(nfs4_proc_getdevicelist
);
7009 _nfs4_proc_getdeviceinfo(struct nfs_server
*server
,
7010 struct pnfs_device
*pdev
,
7011 struct rpc_cred
*cred
)
7013 struct nfs4_getdeviceinfo_args args
= {
7016 struct nfs4_getdeviceinfo_res res
= {
7019 struct rpc_message msg
= {
7020 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETDEVICEINFO
],
7027 dprintk("--> %s\n", __func__
);
7028 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
7029 dprintk("<-- %s status=%d\n", __func__
, status
);
7034 int nfs4_proc_getdeviceinfo(struct nfs_server
*server
,
7035 struct pnfs_device
*pdev
,
7036 struct rpc_cred
*cred
)
7038 struct nfs4_exception exception
= { };
7042 err
= nfs4_handle_exception(server
,
7043 _nfs4_proc_getdeviceinfo(server
, pdev
, cred
),
7045 } while (exception
.retry
);
7048 EXPORT_SYMBOL_GPL(nfs4_proc_getdeviceinfo
);
7050 static void nfs4_layoutcommit_prepare(struct rpc_task
*task
, void *calldata
)
7052 struct nfs4_layoutcommit_data
*data
= calldata
;
7053 struct nfs_server
*server
= NFS_SERVER(data
->args
.inode
);
7054 struct nfs4_session
*session
= nfs4_get_session(server
);
7056 nfs41_setup_sequence(session
,
7057 &data
->args
.seq_args
,
7063 nfs4_layoutcommit_done(struct rpc_task
*task
, void *calldata
)
7065 struct nfs4_layoutcommit_data
*data
= calldata
;
7066 struct nfs_server
*server
= NFS_SERVER(data
->args
.inode
);
7068 if (!nfs41_sequence_done(task
, &data
->res
.seq_res
))
7071 switch (task
->tk_status
) { /* Just ignore these failures */
7072 case -NFS4ERR_DELEG_REVOKED
: /* layout was recalled */
7073 case -NFS4ERR_BADIOMODE
: /* no IOMODE_RW layout for range */
7074 case -NFS4ERR_BADLAYOUT
: /* no layout */
7075 case -NFS4ERR_GRACE
: /* loca_recalim always false */
7076 task
->tk_status
= 0;
7079 nfs_post_op_update_inode_force_wcc(data
->args
.inode
,
7083 if (nfs4_async_handle_error(task
, server
, NULL
) == -EAGAIN
) {
7084 rpc_restart_call_prepare(task
);
7090 static void nfs4_layoutcommit_release(void *calldata
)
7092 struct nfs4_layoutcommit_data
*data
= calldata
;
7094 pnfs_cleanup_layoutcommit(data
);
7095 put_rpccred(data
->cred
);
7099 static const struct rpc_call_ops nfs4_layoutcommit_ops
= {
7100 .rpc_call_prepare
= nfs4_layoutcommit_prepare
,
7101 .rpc_call_done
= nfs4_layoutcommit_done
,
7102 .rpc_release
= nfs4_layoutcommit_release
,
7106 nfs4_proc_layoutcommit(struct nfs4_layoutcommit_data
*data
, bool sync
)
7108 struct rpc_message msg
= {
7109 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LAYOUTCOMMIT
],
7110 .rpc_argp
= &data
->args
,
7111 .rpc_resp
= &data
->res
,
7112 .rpc_cred
= data
->cred
,
7114 struct rpc_task_setup task_setup_data
= {
7115 .task
= &data
->task
,
7116 .rpc_client
= NFS_CLIENT(data
->args
.inode
),
7117 .rpc_message
= &msg
,
7118 .callback_ops
= &nfs4_layoutcommit_ops
,
7119 .callback_data
= data
,
7120 .flags
= RPC_TASK_ASYNC
,
7122 struct rpc_task
*task
;
7125 dprintk("NFS: %4d initiating layoutcommit call. sync %d "
7126 "lbw: %llu inode %lu\n",
7127 data
->task
.tk_pid
, sync
,
7128 data
->args
.lastbytewritten
,
7129 data
->args
.inode
->i_ino
);
7131 nfs41_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
7132 task
= rpc_run_task(&task_setup_data
);
7134 return PTR_ERR(task
);
7137 status
= nfs4_wait_for_completion_rpc_task(task
);
7140 status
= task
->tk_status
;
7141 trace_nfs4_layoutcommit(data
->args
.inode
, status
);
7143 dprintk("%s: status %d\n", __func__
, status
);
7149 * Use the state managment nfs_client cl_rpcclient, which uses krb5i (if
7150 * possible) as per RFC3530bis and RFC5661 Security Considerations sections
7153 _nfs41_proc_secinfo_no_name(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
7154 struct nfs_fsinfo
*info
, struct nfs4_secinfo_flavors
*flavors
)
7156 struct nfs41_secinfo_no_name_args args
= {
7157 .style
= SECINFO_STYLE_CURRENT_FH
,
7159 struct nfs4_secinfo_res res
= {
7162 struct rpc_message msg
= {
7163 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SECINFO_NO_NAME
],
7167 return nfs4_call_sync(server
->nfs_client
->cl_rpcclient
, server
, &msg
,
7168 &args
.seq_args
, &res
.seq_res
, 0);
7172 nfs41_proc_secinfo_no_name(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
7173 struct nfs_fsinfo
*info
, struct nfs4_secinfo_flavors
*flavors
)
7175 struct nfs4_exception exception
= { };
7178 err
= _nfs41_proc_secinfo_no_name(server
, fhandle
, info
, flavors
);
7181 case -NFS4ERR_WRONGSEC
:
7182 case -NFS4ERR_NOTSUPP
:
7185 err
= nfs4_handle_exception(server
, err
, &exception
);
7187 } while (exception
.retry
);
7193 nfs41_find_root_sec(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
7194 struct nfs_fsinfo
*info
)
7198 rpc_authflavor_t flavor
;
7199 struct nfs4_secinfo_flavors
*flavors
;
7201 page
= alloc_page(GFP_KERNEL
);
7207 flavors
= page_address(page
);
7208 err
= nfs41_proc_secinfo_no_name(server
, fhandle
, info
, flavors
);
7211 * Fall back on "guess and check" method if
7212 * the server doesn't support SECINFO_NO_NAME
7214 if (err
== -NFS4ERR_WRONGSEC
|| err
== -NFS4ERR_NOTSUPP
) {
7215 err
= nfs4_find_root_sec(server
, fhandle
, info
);
7221 flavor
= nfs_find_best_sec(flavors
);
7223 err
= nfs4_lookup_root_sec(server
, fhandle
, info
, flavor
);
7233 static int _nfs41_test_stateid(struct nfs_server
*server
,
7234 nfs4_stateid
*stateid
,
7235 struct rpc_cred
*cred
)
7238 struct nfs41_test_stateid_args args
= {
7241 struct nfs41_test_stateid_res res
;
7242 struct rpc_message msg
= {
7243 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_TEST_STATEID
],
7249 dprintk("NFS call test_stateid %p\n", stateid
);
7250 nfs41_init_sequence(&args
.seq_args
, &res
.seq_res
, 0);
7251 nfs4_set_sequence_privileged(&args
.seq_args
);
7252 status
= nfs4_call_sync_sequence(server
->client
, server
, &msg
,
7253 &args
.seq_args
, &res
.seq_res
);
7254 if (status
!= NFS_OK
) {
7255 dprintk("NFS reply test_stateid: failed, %d\n", status
);
7258 dprintk("NFS reply test_stateid: succeeded, %d\n", -res
.status
);
7263 * nfs41_test_stateid - perform a TEST_STATEID operation
7265 * @server: server / transport on which to perform the operation
7266 * @stateid: state ID to test
7269 * Returns NFS_OK if the server recognizes that "stateid" is valid.
7270 * Otherwise a negative NFS4ERR value is returned if the operation
7271 * failed or the state ID is not currently valid.
7273 static int nfs41_test_stateid(struct nfs_server
*server
,
7274 nfs4_stateid
*stateid
,
7275 struct rpc_cred
*cred
)
7277 struct nfs4_exception exception
= { };
7280 err
= _nfs41_test_stateid(server
, stateid
, cred
);
7281 if (err
!= -NFS4ERR_DELAY
)
7283 nfs4_handle_exception(server
, err
, &exception
);
7284 } while (exception
.retry
);
7288 struct nfs_free_stateid_data
{
7289 struct nfs_server
*server
;
7290 struct nfs41_free_stateid_args args
;
7291 struct nfs41_free_stateid_res res
;
7294 static void nfs41_free_stateid_prepare(struct rpc_task
*task
, void *calldata
)
7296 struct nfs_free_stateid_data
*data
= calldata
;
7297 nfs41_setup_sequence(nfs4_get_session(data
->server
),
7298 &data
->args
.seq_args
,
7303 static void nfs41_free_stateid_done(struct rpc_task
*task
, void *calldata
)
7305 struct nfs_free_stateid_data
*data
= calldata
;
7307 nfs41_sequence_done(task
, &data
->res
.seq_res
);
7309 switch (task
->tk_status
) {
7310 case -NFS4ERR_DELAY
:
7311 if (nfs4_async_handle_error(task
, data
->server
, NULL
) == -EAGAIN
)
7312 rpc_restart_call_prepare(task
);
7316 static void nfs41_free_stateid_release(void *calldata
)
7321 static const struct rpc_call_ops nfs41_free_stateid_ops
= {
7322 .rpc_call_prepare
= nfs41_free_stateid_prepare
,
7323 .rpc_call_done
= nfs41_free_stateid_done
,
7324 .rpc_release
= nfs41_free_stateid_release
,
7327 static struct rpc_task
*_nfs41_free_stateid(struct nfs_server
*server
,
7328 nfs4_stateid
*stateid
,
7329 struct rpc_cred
*cred
,
7332 struct rpc_message msg
= {
7333 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FREE_STATEID
],
7336 struct rpc_task_setup task_setup
= {
7337 .rpc_client
= server
->client
,
7338 .rpc_message
= &msg
,
7339 .callback_ops
= &nfs41_free_stateid_ops
,
7340 .flags
= RPC_TASK_ASYNC
,
7342 struct nfs_free_stateid_data
*data
;
7344 dprintk("NFS call free_stateid %p\n", stateid
);
7345 data
= kmalloc(sizeof(*data
), GFP_NOFS
);
7347 return ERR_PTR(-ENOMEM
);
7348 data
->server
= server
;
7349 nfs4_stateid_copy(&data
->args
.stateid
, stateid
);
7351 task_setup
.callback_data
= data
;
7353 msg
.rpc_argp
= &data
->args
;
7354 msg
.rpc_resp
= &data
->res
;
7355 nfs41_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 0);
7357 nfs4_set_sequence_privileged(&data
->args
.seq_args
);
7359 return rpc_run_task(&task_setup
);
7363 * nfs41_free_stateid - perform a FREE_STATEID operation
7365 * @server: server / transport on which to perform the operation
7366 * @stateid: state ID to release
7369 * Returns NFS_OK if the server freed "stateid". Otherwise a
7370 * negative NFS4ERR value is returned.
7372 static int nfs41_free_stateid(struct nfs_server
*server
,
7373 nfs4_stateid
*stateid
,
7374 struct rpc_cred
*cred
)
7376 struct rpc_task
*task
;
7379 task
= _nfs41_free_stateid(server
, stateid
, cred
, true);
7381 return PTR_ERR(task
);
7382 ret
= rpc_wait_for_completion_task(task
);
7384 ret
= task
->tk_status
;
7389 static int nfs41_free_lock_state(struct nfs_server
*server
, struct nfs4_lock_state
*lsp
)
7391 struct rpc_task
*task
;
7392 struct rpc_cred
*cred
= lsp
->ls_state
->owner
->so_cred
;
7394 task
= _nfs41_free_stateid(server
, &lsp
->ls_stateid
, cred
, false);
7395 nfs4_free_lock_state(server
, lsp
);
7397 return PTR_ERR(task
);
7402 static bool nfs41_match_stateid(const nfs4_stateid
*s1
,
7403 const nfs4_stateid
*s2
)
7405 if (memcmp(s1
->other
, s2
->other
, sizeof(s1
->other
)) != 0)
7408 if (s1
->seqid
== s2
->seqid
)
7410 if (s1
->seqid
== 0 || s2
->seqid
== 0)
7416 #endif /* CONFIG_NFS_V4_1 */
7418 static bool nfs4_match_stateid(const nfs4_stateid
*s1
,
7419 const nfs4_stateid
*s2
)
7421 return nfs4_stateid_match(s1
, s2
);
7425 static const struct nfs4_state_recovery_ops nfs40_reboot_recovery_ops
= {
7426 .owner_flag_bit
= NFS_OWNER_RECLAIM_REBOOT
,
7427 .state_flag_bit
= NFS_STATE_RECLAIM_REBOOT
,
7428 .recover_open
= nfs4_open_reclaim
,
7429 .recover_lock
= nfs4_lock_reclaim
,
7430 .establish_clid
= nfs4_init_clientid
,
7431 .detect_trunking
= nfs40_discover_server_trunking
,
7434 #if defined(CONFIG_NFS_V4_1)
7435 static const struct nfs4_state_recovery_ops nfs41_reboot_recovery_ops
= {
7436 .owner_flag_bit
= NFS_OWNER_RECLAIM_REBOOT
,
7437 .state_flag_bit
= NFS_STATE_RECLAIM_REBOOT
,
7438 .recover_open
= nfs4_open_reclaim
,
7439 .recover_lock
= nfs4_lock_reclaim
,
7440 .establish_clid
= nfs41_init_clientid
,
7441 .reclaim_complete
= nfs41_proc_reclaim_complete
,
7442 .detect_trunking
= nfs41_discover_server_trunking
,
7444 #endif /* CONFIG_NFS_V4_1 */
7446 static const struct nfs4_state_recovery_ops nfs40_nograce_recovery_ops
= {
7447 .owner_flag_bit
= NFS_OWNER_RECLAIM_NOGRACE
,
7448 .state_flag_bit
= NFS_STATE_RECLAIM_NOGRACE
,
7449 .recover_open
= nfs4_open_expired
,
7450 .recover_lock
= nfs4_lock_expired
,
7451 .establish_clid
= nfs4_init_clientid
,
7454 #if defined(CONFIG_NFS_V4_1)
7455 static const struct nfs4_state_recovery_ops nfs41_nograce_recovery_ops
= {
7456 .owner_flag_bit
= NFS_OWNER_RECLAIM_NOGRACE
,
7457 .state_flag_bit
= NFS_STATE_RECLAIM_NOGRACE
,
7458 .recover_open
= nfs41_open_expired
,
7459 .recover_lock
= nfs41_lock_expired
,
7460 .establish_clid
= nfs41_init_clientid
,
7462 #endif /* CONFIG_NFS_V4_1 */
7464 static const struct nfs4_state_maintenance_ops nfs40_state_renewal_ops
= {
7465 .sched_state_renewal
= nfs4_proc_async_renew
,
7466 .get_state_renewal_cred_locked
= nfs4_get_renew_cred_locked
,
7467 .renew_lease
= nfs4_proc_renew
,
7470 #if defined(CONFIG_NFS_V4_1)
7471 static const struct nfs4_state_maintenance_ops nfs41_state_renewal_ops
= {
7472 .sched_state_renewal
= nfs41_proc_async_sequence
,
7473 .get_state_renewal_cred_locked
= nfs4_get_machine_cred_locked
,
7474 .renew_lease
= nfs4_proc_sequence
,
7478 static const struct nfs4_minor_version_ops nfs_v4_0_minor_ops
= {
7480 .init_caps
= NFS_CAP_READDIRPLUS
7481 | NFS_CAP_ATOMIC_OPEN
7482 | NFS_CAP_CHANGE_ATTR
7483 | NFS_CAP_POSIX_LOCK
,
7484 .call_sync
= _nfs4_call_sync
,
7485 .match_stateid
= nfs4_match_stateid
,
7486 .find_root_sec
= nfs4_find_root_sec
,
7487 .free_lock_state
= nfs4_release_lockowner
,
7488 .reboot_recovery_ops
= &nfs40_reboot_recovery_ops
,
7489 .nograce_recovery_ops
= &nfs40_nograce_recovery_ops
,
7490 .state_renewal_ops
= &nfs40_state_renewal_ops
,
7493 #if defined(CONFIG_NFS_V4_1)
7494 static const struct nfs4_minor_version_ops nfs_v4_1_minor_ops
= {
7496 .init_caps
= NFS_CAP_READDIRPLUS
7497 | NFS_CAP_ATOMIC_OPEN
7498 | NFS_CAP_CHANGE_ATTR
7499 | NFS_CAP_POSIX_LOCK
7500 | NFS_CAP_STATEID_NFSV41
7501 | NFS_CAP_ATOMIC_OPEN_V1
,
7502 .call_sync
= nfs4_call_sync_sequence
,
7503 .match_stateid
= nfs41_match_stateid
,
7504 .find_root_sec
= nfs41_find_root_sec
,
7505 .free_lock_state
= nfs41_free_lock_state
,
7506 .reboot_recovery_ops
= &nfs41_reboot_recovery_ops
,
7507 .nograce_recovery_ops
= &nfs41_nograce_recovery_ops
,
7508 .state_renewal_ops
= &nfs41_state_renewal_ops
,
7512 #if defined(CONFIG_NFS_V4_2)
7513 static const struct nfs4_minor_version_ops nfs_v4_2_minor_ops
= {
7515 .init_caps
= NFS_CAP_READDIRPLUS
7516 | NFS_CAP_ATOMIC_OPEN
7517 | NFS_CAP_CHANGE_ATTR
7518 | NFS_CAP_POSIX_LOCK
7519 | NFS_CAP_STATEID_NFSV41
7520 | NFS_CAP_ATOMIC_OPEN_V1
,
7521 .call_sync
= nfs4_call_sync_sequence
,
7522 .match_stateid
= nfs41_match_stateid
,
7523 .find_root_sec
= nfs41_find_root_sec
,
7524 .free_lock_state
= nfs41_free_lock_state
,
7525 .reboot_recovery_ops
= &nfs41_reboot_recovery_ops
,
7526 .nograce_recovery_ops
= &nfs41_nograce_recovery_ops
,
7527 .state_renewal_ops
= &nfs41_state_renewal_ops
,
7531 const struct nfs4_minor_version_ops
*nfs_v4_minor_ops
[] = {
7532 [0] = &nfs_v4_0_minor_ops
,
7533 #if defined(CONFIG_NFS_V4_1)
7534 [1] = &nfs_v4_1_minor_ops
,
7536 #if defined(CONFIG_NFS_V4_2)
7537 [2] = &nfs_v4_2_minor_ops
,
7541 static const struct inode_operations nfs4_dir_inode_operations
= {
7542 .create
= nfs_create
,
7543 .lookup
= nfs_lookup
,
7544 .atomic_open
= nfs_atomic_open
,
7546 .unlink
= nfs_unlink
,
7547 .symlink
= nfs_symlink
,
7551 .rename
= nfs_rename
,
7552 .permission
= nfs_permission
,
7553 .getattr
= nfs_getattr
,
7554 .setattr
= nfs_setattr
,
7555 .getxattr
= generic_getxattr
,
7556 .setxattr
= generic_setxattr
,
7557 .listxattr
= generic_listxattr
,
7558 .removexattr
= generic_removexattr
,
7561 static const struct inode_operations nfs4_file_inode_operations
= {
7562 .permission
= nfs_permission
,
7563 .getattr
= nfs_getattr
,
7564 .setattr
= nfs_setattr
,
7565 .getxattr
= generic_getxattr
,
7566 .setxattr
= generic_setxattr
,
7567 .listxattr
= generic_listxattr
,
7568 .removexattr
= generic_removexattr
,
7571 const struct nfs_rpc_ops nfs_v4_clientops
= {
7572 .version
= 4, /* protocol version */
7573 .dentry_ops
= &nfs4_dentry_operations
,
7574 .dir_inode_ops
= &nfs4_dir_inode_operations
,
7575 .file_inode_ops
= &nfs4_file_inode_operations
,
7576 .file_ops
= &nfs4_file_operations
,
7577 .getroot
= nfs4_proc_get_root
,
7578 .submount
= nfs4_submount
,
7579 .try_mount
= nfs4_try_mount
,
7580 .getattr
= nfs4_proc_getattr
,
7581 .setattr
= nfs4_proc_setattr
,
7582 .lookup
= nfs4_proc_lookup
,
7583 .access
= nfs4_proc_access
,
7584 .readlink
= nfs4_proc_readlink
,
7585 .create
= nfs4_proc_create
,
7586 .remove
= nfs4_proc_remove
,
7587 .unlink_setup
= nfs4_proc_unlink_setup
,
7588 .unlink_rpc_prepare
= nfs4_proc_unlink_rpc_prepare
,
7589 .unlink_done
= nfs4_proc_unlink_done
,
7590 .rename
= nfs4_proc_rename
,
7591 .rename_setup
= nfs4_proc_rename_setup
,
7592 .rename_rpc_prepare
= nfs4_proc_rename_rpc_prepare
,
7593 .rename_done
= nfs4_proc_rename_done
,
7594 .link
= nfs4_proc_link
,
7595 .symlink
= nfs4_proc_symlink
,
7596 .mkdir
= nfs4_proc_mkdir
,
7597 .rmdir
= nfs4_proc_remove
,
7598 .readdir
= nfs4_proc_readdir
,
7599 .mknod
= nfs4_proc_mknod
,
7600 .statfs
= nfs4_proc_statfs
,
7601 .fsinfo
= nfs4_proc_fsinfo
,
7602 .pathconf
= nfs4_proc_pathconf
,
7603 .set_capabilities
= nfs4_server_capabilities
,
7604 .decode_dirent
= nfs4_decode_dirent
,
7605 .read_setup
= nfs4_proc_read_setup
,
7606 .read_pageio_init
= pnfs_pageio_init_read
,
7607 .read_rpc_prepare
= nfs4_proc_read_rpc_prepare
,
7608 .read_done
= nfs4_read_done
,
7609 .write_setup
= nfs4_proc_write_setup
,
7610 .write_pageio_init
= pnfs_pageio_init_write
,
7611 .write_rpc_prepare
= nfs4_proc_write_rpc_prepare
,
7612 .write_done
= nfs4_write_done
,
7613 .commit_setup
= nfs4_proc_commit_setup
,
7614 .commit_rpc_prepare
= nfs4_proc_commit_rpc_prepare
,
7615 .commit_done
= nfs4_commit_done
,
7616 .lock
= nfs4_proc_lock
,
7617 .clear_acl_cache
= nfs4_zap_acl_attr
,
7618 .close_context
= nfs4_close_context
,
7619 .open_context
= nfs4_atomic_open
,
7620 .have_delegation
= nfs4_have_delegation
,
7621 .return_delegation
= nfs4_inode_return_delegation
,
7622 .alloc_client
= nfs4_alloc_client
,
7623 .init_client
= nfs4_init_client
,
7624 .free_client
= nfs4_free_client
,
7625 .create_server
= nfs4_create_server
,
7626 .clone_server
= nfs_clone_server
,
7629 static const struct xattr_handler nfs4_xattr_nfs4_acl_handler
= {
7630 .prefix
= XATTR_NAME_NFSV4_ACL
,
7631 .list
= nfs4_xattr_list_nfs4_acl
,
7632 .get
= nfs4_xattr_get_nfs4_acl
,
7633 .set
= nfs4_xattr_set_nfs4_acl
,
7636 const struct xattr_handler
*nfs4_xattr_handlers
[] = {
7637 &nfs4_xattr_nfs4_acl_handler
,
7638 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
7639 &nfs4_xattr_nfs4_label_handler
,