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 err
= security_dentry_init_security(dentry
, sattr
->ia_mode
,
109 &dentry
->d_name
, (void **)&label
->label
, &label
->len
);
116 nfs4_label_release_security(struct nfs4_label
*label
)
119 security_release_secctx(label
->label
, label
->len
);
121 static inline u32
*nfs4_bitmask(struct nfs_server
*server
, struct nfs4_label
*label
)
124 return server
->attr_bitmask
;
126 return server
->attr_bitmask_nl
;
129 static inline struct nfs4_label
*
130 nfs4_label_init_security(struct inode
*dir
, struct dentry
*dentry
,
131 struct iattr
*sattr
, struct nfs4_label
*l
)
134 nfs4_label_release_security(struct nfs4_label
*label
)
137 nfs4_bitmask(struct nfs_server
*server
, struct nfs4_label
*label
)
138 { return server
->attr_bitmask
; }
141 /* Prevent leaks of NFSv4 errors into userland */
142 static int nfs4_map_errors(int err
)
147 case -NFS4ERR_RESOURCE
:
148 case -NFS4ERR_LAYOUTTRYLATER
:
149 case -NFS4ERR_RECALLCONFLICT
:
151 case -NFS4ERR_WRONGSEC
:
152 case -NFS4ERR_WRONG_CRED
:
154 case -NFS4ERR_BADOWNER
:
155 case -NFS4ERR_BADNAME
:
157 case -NFS4ERR_SHARE_DENIED
:
159 case -NFS4ERR_MINOR_VERS_MISMATCH
:
160 return -EPROTONOSUPPORT
;
161 case -NFS4ERR_ACCESS
:
163 case -NFS4ERR_FILE_OPEN
:
166 dprintk("%s could not handle NFSv4 error %d\n",
174 * This is our standard bitmap for GETATTR requests.
176 const u32 nfs4_fattr_bitmap
[3] = {
178 | FATTR4_WORD0_CHANGE
181 | FATTR4_WORD0_FILEID
,
183 | FATTR4_WORD1_NUMLINKS
185 | FATTR4_WORD1_OWNER_GROUP
186 | FATTR4_WORD1_RAWDEV
187 | FATTR4_WORD1_SPACE_USED
188 | FATTR4_WORD1_TIME_ACCESS
189 | FATTR4_WORD1_TIME_METADATA
190 | FATTR4_WORD1_TIME_MODIFY
,
191 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
192 FATTR4_WORD2_SECURITY_LABEL
196 static const u32 nfs4_pnfs_open_bitmap
[3] = {
198 | FATTR4_WORD0_CHANGE
201 | FATTR4_WORD0_FILEID
,
203 | FATTR4_WORD1_NUMLINKS
205 | FATTR4_WORD1_OWNER_GROUP
206 | FATTR4_WORD1_RAWDEV
207 | FATTR4_WORD1_SPACE_USED
208 | FATTR4_WORD1_TIME_ACCESS
209 | FATTR4_WORD1_TIME_METADATA
210 | FATTR4_WORD1_TIME_MODIFY
,
211 FATTR4_WORD2_MDSTHRESHOLD
214 static const u32 nfs4_open_noattr_bitmap
[3] = {
216 | FATTR4_WORD0_CHANGE
217 | FATTR4_WORD0_FILEID
,
220 const u32 nfs4_statfs_bitmap
[3] = {
221 FATTR4_WORD0_FILES_AVAIL
222 | FATTR4_WORD0_FILES_FREE
223 | FATTR4_WORD0_FILES_TOTAL
,
224 FATTR4_WORD1_SPACE_AVAIL
225 | FATTR4_WORD1_SPACE_FREE
226 | FATTR4_WORD1_SPACE_TOTAL
229 const u32 nfs4_pathconf_bitmap
[3] = {
231 | FATTR4_WORD0_MAXNAME
,
235 const u32 nfs4_fsinfo_bitmap
[3] = { FATTR4_WORD0_MAXFILESIZE
236 | FATTR4_WORD0_MAXREAD
237 | FATTR4_WORD0_MAXWRITE
238 | FATTR4_WORD0_LEASE_TIME
,
239 FATTR4_WORD1_TIME_DELTA
240 | FATTR4_WORD1_FS_LAYOUT_TYPES
,
241 FATTR4_WORD2_LAYOUT_BLKSIZE
244 const u32 nfs4_fs_locations_bitmap
[3] = {
246 | FATTR4_WORD0_CHANGE
249 | FATTR4_WORD0_FILEID
250 | FATTR4_WORD0_FS_LOCATIONS
,
252 | FATTR4_WORD1_NUMLINKS
254 | FATTR4_WORD1_OWNER_GROUP
255 | FATTR4_WORD1_RAWDEV
256 | FATTR4_WORD1_SPACE_USED
257 | FATTR4_WORD1_TIME_ACCESS
258 | FATTR4_WORD1_TIME_METADATA
259 | FATTR4_WORD1_TIME_MODIFY
260 | FATTR4_WORD1_MOUNTED_ON_FILEID
,
263 static void nfs4_setup_readdir(u64 cookie
, __be32
*verifier
, struct dentry
*dentry
,
264 struct nfs4_readdir_arg
*readdir
)
269 readdir
->cookie
= cookie
;
270 memcpy(&readdir
->verifier
, verifier
, sizeof(readdir
->verifier
));
275 memset(&readdir
->verifier
, 0, sizeof(readdir
->verifier
));
280 * NFSv4 servers do not return entries for '.' and '..'
281 * Therefore, we fake these entries here. We let '.'
282 * have cookie 0 and '..' have cookie 1. Note that
283 * when talking to the server, we always send cookie 0
286 start
= p
= kmap_atomic(*readdir
->pages
);
289 *p
++ = xdr_one
; /* next */
290 *p
++ = xdr_zero
; /* cookie, first word */
291 *p
++ = xdr_one
; /* cookie, second word */
292 *p
++ = xdr_one
; /* entry len */
293 memcpy(p
, ".\0\0\0", 4); /* entry */
295 *p
++ = xdr_one
; /* bitmap length */
296 *p
++ = htonl(FATTR4_WORD0_FILEID
); /* bitmap */
297 *p
++ = htonl(8); /* attribute buffer length */
298 p
= xdr_encode_hyper(p
, NFS_FILEID(dentry
->d_inode
));
301 *p
++ = xdr_one
; /* next */
302 *p
++ = xdr_zero
; /* cookie, first word */
303 *p
++ = xdr_two
; /* cookie, second word */
304 *p
++ = xdr_two
; /* entry len */
305 memcpy(p
, "..\0\0", 4); /* entry */
307 *p
++ = xdr_one
; /* bitmap length */
308 *p
++ = htonl(FATTR4_WORD0_FILEID
); /* bitmap */
309 *p
++ = htonl(8); /* attribute buffer length */
310 p
= xdr_encode_hyper(p
, NFS_FILEID(dentry
->d_parent
->d_inode
));
312 readdir
->pgbase
= (char *)p
- (char *)start
;
313 readdir
->count
-= readdir
->pgbase
;
314 kunmap_atomic(start
);
317 static int nfs4_delay(struct rpc_clnt
*clnt
, long *timeout
)
324 *timeout
= NFS4_POLL_RETRY_MIN
;
325 if (*timeout
> NFS4_POLL_RETRY_MAX
)
326 *timeout
= NFS4_POLL_RETRY_MAX
;
327 freezable_schedule_timeout_killable_unsafe(*timeout
);
328 if (fatal_signal_pending(current
))
334 /* This is the error handling routine for processes that are allowed
337 static int nfs4_handle_exception(struct nfs_server
*server
, int errorcode
, struct nfs4_exception
*exception
)
339 struct nfs_client
*clp
= server
->nfs_client
;
340 struct nfs4_state
*state
= exception
->state
;
341 struct inode
*inode
= exception
->inode
;
344 exception
->retry
= 0;
348 case -NFS4ERR_OPENMODE
:
349 if (inode
&& nfs4_have_delegation(inode
, FMODE_READ
)) {
350 nfs4_inode_return_delegation(inode
);
351 exception
->retry
= 1;
356 ret
= nfs4_schedule_stateid_recovery(server
, state
);
359 goto wait_on_recovery
;
360 case -NFS4ERR_DELEG_REVOKED
:
361 case -NFS4ERR_ADMIN_REVOKED
:
362 case -NFS4ERR_BAD_STATEID
:
363 if (inode
!= NULL
&& nfs4_have_delegation(inode
, FMODE_READ
)) {
364 nfs_remove_bad_delegation(inode
);
365 exception
->retry
= 1;
370 ret
= nfs4_schedule_stateid_recovery(server
, state
);
373 goto wait_on_recovery
;
374 case -NFS4ERR_EXPIRED
:
376 ret
= nfs4_schedule_stateid_recovery(server
, state
);
380 case -NFS4ERR_STALE_STATEID
:
381 case -NFS4ERR_STALE_CLIENTID
:
382 nfs4_schedule_lease_recovery(clp
);
383 goto wait_on_recovery
;
385 ret
= nfs4_schedule_migration_recovery(server
);
388 goto wait_on_recovery
;
389 case -NFS4ERR_LEASE_MOVED
:
390 nfs4_schedule_lease_moved_recovery(clp
);
391 goto wait_on_recovery
;
392 #if defined(CONFIG_NFS_V4_1)
393 case -NFS4ERR_BADSESSION
:
394 case -NFS4ERR_BADSLOT
:
395 case -NFS4ERR_BAD_HIGH_SLOT
:
396 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
397 case -NFS4ERR_DEADSESSION
:
398 case -NFS4ERR_SEQ_FALSE_RETRY
:
399 case -NFS4ERR_SEQ_MISORDERED
:
400 dprintk("%s ERROR: %d Reset session\n", __func__
,
402 nfs4_schedule_session_recovery(clp
->cl_session
, errorcode
);
403 goto wait_on_recovery
;
404 #endif /* defined(CONFIG_NFS_V4_1) */
405 case -NFS4ERR_FILE_OPEN
:
406 if (exception
->timeout
> HZ
) {
407 /* We have retried a decent amount, time to
415 ret
= nfs4_delay(server
->client
, &exception
->timeout
);
418 case -NFS4ERR_RETRY_UNCACHED_REP
:
419 case -NFS4ERR_OLD_STATEID
:
420 exception
->retry
= 1;
422 case -NFS4ERR_BADOWNER
:
423 /* The following works around a Linux server bug! */
424 case -NFS4ERR_BADNAME
:
425 if (server
->caps
& NFS_CAP_UIDGID_NOMAP
) {
426 server
->caps
&= ~NFS_CAP_UIDGID_NOMAP
;
427 exception
->retry
= 1;
428 printk(KERN_WARNING
"NFS: v4 server %s "
429 "does not accept raw "
431 "Reenabling the idmapper.\n",
432 server
->nfs_client
->cl_hostname
);
435 /* We failed to handle the error */
436 return nfs4_map_errors(ret
);
438 ret
= nfs4_wait_clnt_recover(clp
);
439 if (test_bit(NFS_MIG_FAILED
, &server
->mig_status
))
442 exception
->retry
= 1;
447 * Return 'true' if 'clp' is using an rpc_client that is integrity protected
448 * or 'false' otherwise.
450 static bool _nfs4_is_integrity_protected(struct nfs_client
*clp
)
452 rpc_authflavor_t flavor
= clp
->cl_rpcclient
->cl_auth
->au_flavor
;
454 if (flavor
== RPC_AUTH_GSS_KRB5I
||
455 flavor
== RPC_AUTH_GSS_KRB5P
)
461 static void do_renew_lease(struct nfs_client
*clp
, unsigned long timestamp
)
463 spin_lock(&clp
->cl_lock
);
464 if (time_before(clp
->cl_last_renewal
,timestamp
))
465 clp
->cl_last_renewal
= timestamp
;
466 spin_unlock(&clp
->cl_lock
);
469 static void renew_lease(const struct nfs_server
*server
, unsigned long timestamp
)
471 do_renew_lease(server
->nfs_client
, timestamp
);
474 struct nfs4_call_sync_data
{
475 const struct nfs_server
*seq_server
;
476 struct nfs4_sequence_args
*seq_args
;
477 struct nfs4_sequence_res
*seq_res
;
480 static void nfs4_init_sequence(struct nfs4_sequence_args
*args
,
481 struct nfs4_sequence_res
*res
, int cache_reply
)
483 args
->sa_slot
= NULL
;
484 args
->sa_cache_this
= cache_reply
;
485 args
->sa_privileged
= 0;
490 static void nfs4_set_sequence_privileged(struct nfs4_sequence_args
*args
)
492 args
->sa_privileged
= 1;
495 static int nfs40_setup_sequence(const struct nfs_server
*server
,
496 struct nfs4_sequence_args
*args
,
497 struct nfs4_sequence_res
*res
,
498 struct rpc_task
*task
)
500 struct nfs4_slot_table
*tbl
= server
->nfs_client
->cl_slot_tbl
;
501 struct nfs4_slot
*slot
;
503 /* slot already allocated? */
504 if (res
->sr_slot
!= NULL
)
507 spin_lock(&tbl
->slot_tbl_lock
);
508 if (nfs4_slot_tbl_draining(tbl
) && !args
->sa_privileged
)
511 slot
= nfs4_alloc_slot(tbl
);
513 if (slot
== ERR_PTR(-ENOMEM
))
514 task
->tk_timeout
= HZ
>> 2;
517 spin_unlock(&tbl
->slot_tbl_lock
);
519 args
->sa_slot
= slot
;
523 rpc_call_start(task
);
527 if (args
->sa_privileged
)
528 rpc_sleep_on_priority(&tbl
->slot_tbl_waitq
, task
,
529 NULL
, RPC_PRIORITY_PRIVILEGED
);
531 rpc_sleep_on(&tbl
->slot_tbl_waitq
, task
, NULL
);
532 spin_unlock(&tbl
->slot_tbl_lock
);
536 static int nfs40_sequence_done(struct rpc_task
*task
,
537 struct nfs4_sequence_res
*res
)
539 struct nfs4_slot
*slot
= res
->sr_slot
;
540 struct nfs4_slot_table
*tbl
;
546 spin_lock(&tbl
->slot_tbl_lock
);
547 if (!nfs41_wake_and_assign_slot(tbl
, slot
))
548 nfs4_free_slot(tbl
, slot
);
549 spin_unlock(&tbl
->slot_tbl_lock
);
556 #if defined(CONFIG_NFS_V4_1)
558 static void nfs41_sequence_free_slot(struct nfs4_sequence_res
*res
)
560 struct nfs4_session
*session
;
561 struct nfs4_slot_table
*tbl
;
562 struct nfs4_slot
*slot
= res
->sr_slot
;
563 bool send_new_highest_used_slotid
= false;
566 session
= tbl
->session
;
568 spin_lock(&tbl
->slot_tbl_lock
);
569 /* Be nice to the server: try to ensure that the last transmitted
570 * value for highest_user_slotid <= target_highest_slotid
572 if (tbl
->highest_used_slotid
> tbl
->target_highest_slotid
)
573 send_new_highest_used_slotid
= true;
575 if (nfs41_wake_and_assign_slot(tbl
, slot
)) {
576 send_new_highest_used_slotid
= false;
579 nfs4_free_slot(tbl
, slot
);
581 if (tbl
->highest_used_slotid
!= NFS4_NO_SLOT
)
582 send_new_highest_used_slotid
= false;
584 spin_unlock(&tbl
->slot_tbl_lock
);
586 if (send_new_highest_used_slotid
)
587 nfs41_server_notify_highest_slotid_update(session
->clp
);
590 int nfs41_sequence_done(struct rpc_task
*task
, struct nfs4_sequence_res
*res
)
592 struct nfs4_session
*session
;
593 struct nfs4_slot
*slot
= res
->sr_slot
;
594 struct nfs_client
*clp
;
595 bool interrupted
= false;
600 /* don't increment the sequence number if the task wasn't sent */
601 if (!RPC_WAS_SENT(task
))
604 session
= slot
->table
->session
;
606 if (slot
->interrupted
) {
607 slot
->interrupted
= 0;
611 trace_nfs4_sequence_done(session
, res
);
612 /* Check the SEQUENCE operation status */
613 switch (res
->sr_status
) {
615 /* Update the slot's sequence and clientid lease timer */
618 do_renew_lease(clp
, res
->sr_timestamp
);
619 /* Check sequence flags */
620 if (res
->sr_status_flags
!= 0)
621 nfs4_schedule_lease_recovery(clp
);
622 nfs41_update_target_slotid(slot
->table
, slot
, res
);
626 * sr_status remains 1 if an RPC level error occurred.
627 * The server may or may not have processed the sequence
629 * Mark the slot as having hosted an interrupted RPC call.
631 slot
->interrupted
= 1;
634 /* The server detected a resend of the RPC call and
635 * returned NFS4ERR_DELAY as per Section 2.10.6.2
638 dprintk("%s: slot=%u seq=%u: Operation in progress\n",
643 case -NFS4ERR_BADSLOT
:
645 * The slot id we used was probably retired. Try again
646 * using a different slot id.
649 case -NFS4ERR_SEQ_MISORDERED
:
651 * Was the last operation on this sequence interrupted?
652 * If so, retry after bumping the sequence number.
659 * Could this slot have been previously retired?
660 * If so, then the server may be expecting seq_nr = 1!
662 if (slot
->seq_nr
!= 1) {
667 case -NFS4ERR_SEQ_FALSE_RETRY
:
671 /* Just update the slot sequence no. */
675 /* The session may be reset by one of the error handlers. */
676 dprintk("%s: Error %d free the slot \n", __func__
, res
->sr_status
);
677 nfs41_sequence_free_slot(res
);
681 if (rpc_restart_call_prepare(task
)) {
687 if (!rpc_restart_call(task
))
689 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
692 EXPORT_SYMBOL_GPL(nfs41_sequence_done
);
694 static int nfs4_sequence_done(struct rpc_task
*task
,
695 struct nfs4_sequence_res
*res
)
697 if (res
->sr_slot
== NULL
)
699 if (!res
->sr_slot
->table
->session
)
700 return nfs40_sequence_done(task
, res
);
701 return nfs41_sequence_done(task
, res
);
704 int nfs41_setup_sequence(struct nfs4_session
*session
,
705 struct nfs4_sequence_args
*args
,
706 struct nfs4_sequence_res
*res
,
707 struct rpc_task
*task
)
709 struct nfs4_slot
*slot
;
710 struct nfs4_slot_table
*tbl
;
712 dprintk("--> %s\n", __func__
);
713 /* slot already allocated? */
714 if (res
->sr_slot
!= NULL
)
717 tbl
= &session
->fc_slot_table
;
719 task
->tk_timeout
= 0;
721 spin_lock(&tbl
->slot_tbl_lock
);
722 if (test_bit(NFS4_SLOT_TBL_DRAINING
, &tbl
->slot_tbl_state
) &&
723 !args
->sa_privileged
) {
724 /* The state manager will wait until the slot table is empty */
725 dprintk("%s session is draining\n", __func__
);
729 slot
= nfs4_alloc_slot(tbl
);
731 /* If out of memory, try again in 1/4 second */
732 if (slot
== ERR_PTR(-ENOMEM
))
733 task
->tk_timeout
= HZ
>> 2;
734 dprintk("<-- %s: no free slots\n", __func__
);
737 spin_unlock(&tbl
->slot_tbl_lock
);
739 args
->sa_slot
= slot
;
741 dprintk("<-- %s slotid=%u seqid=%u\n", __func__
,
742 slot
->slot_nr
, slot
->seq_nr
);
745 res
->sr_timestamp
= jiffies
;
746 res
->sr_status_flags
= 0;
748 * sr_status is only set in decode_sequence, and so will remain
749 * set to 1 if an rpc level failure occurs.
752 trace_nfs4_setup_sequence(session
, args
);
754 rpc_call_start(task
);
757 /* Privileged tasks are queued with top priority */
758 if (args
->sa_privileged
)
759 rpc_sleep_on_priority(&tbl
->slot_tbl_waitq
, task
,
760 NULL
, RPC_PRIORITY_PRIVILEGED
);
762 rpc_sleep_on(&tbl
->slot_tbl_waitq
, task
, NULL
);
763 spin_unlock(&tbl
->slot_tbl_lock
);
766 EXPORT_SYMBOL_GPL(nfs41_setup_sequence
);
768 static int nfs4_setup_sequence(const struct nfs_server
*server
,
769 struct nfs4_sequence_args
*args
,
770 struct nfs4_sequence_res
*res
,
771 struct rpc_task
*task
)
773 struct nfs4_session
*session
= nfs4_get_session(server
);
777 return nfs40_setup_sequence(server
, args
, res
, task
);
779 dprintk("--> %s clp %p session %p sr_slot %u\n",
780 __func__
, session
->clp
, session
, res
->sr_slot
?
781 res
->sr_slot
->slot_nr
: NFS4_NO_SLOT
);
783 ret
= nfs41_setup_sequence(session
, args
, res
, task
);
785 dprintk("<-- %s status=%d\n", __func__
, ret
);
789 static void nfs41_call_sync_prepare(struct rpc_task
*task
, void *calldata
)
791 struct nfs4_call_sync_data
*data
= calldata
;
792 struct nfs4_session
*session
= nfs4_get_session(data
->seq_server
);
794 dprintk("--> %s data->seq_server %p\n", __func__
, data
->seq_server
);
796 nfs41_setup_sequence(session
, data
->seq_args
, data
->seq_res
, task
);
799 static void nfs41_call_sync_done(struct rpc_task
*task
, void *calldata
)
801 struct nfs4_call_sync_data
*data
= calldata
;
803 nfs41_sequence_done(task
, data
->seq_res
);
806 static const struct rpc_call_ops nfs41_call_sync_ops
= {
807 .rpc_call_prepare
= nfs41_call_sync_prepare
,
808 .rpc_call_done
= nfs41_call_sync_done
,
811 #else /* !CONFIG_NFS_V4_1 */
813 static int nfs4_setup_sequence(const struct nfs_server
*server
,
814 struct nfs4_sequence_args
*args
,
815 struct nfs4_sequence_res
*res
,
816 struct rpc_task
*task
)
818 return nfs40_setup_sequence(server
, args
, res
, task
);
821 static int nfs4_sequence_done(struct rpc_task
*task
,
822 struct nfs4_sequence_res
*res
)
824 return nfs40_sequence_done(task
, res
);
827 #endif /* !CONFIG_NFS_V4_1 */
829 static void nfs40_call_sync_prepare(struct rpc_task
*task
, void *calldata
)
831 struct nfs4_call_sync_data
*data
= calldata
;
832 nfs4_setup_sequence(data
->seq_server
,
833 data
->seq_args
, data
->seq_res
, task
);
836 static void nfs40_call_sync_done(struct rpc_task
*task
, void *calldata
)
838 struct nfs4_call_sync_data
*data
= calldata
;
839 nfs4_sequence_done(task
, data
->seq_res
);
842 static const struct rpc_call_ops nfs40_call_sync_ops
= {
843 .rpc_call_prepare
= nfs40_call_sync_prepare
,
844 .rpc_call_done
= nfs40_call_sync_done
,
847 static int nfs4_call_sync_sequence(struct rpc_clnt
*clnt
,
848 struct nfs_server
*server
,
849 struct rpc_message
*msg
,
850 struct nfs4_sequence_args
*args
,
851 struct nfs4_sequence_res
*res
)
854 struct rpc_task
*task
;
855 struct nfs_client
*clp
= server
->nfs_client
;
856 struct nfs4_call_sync_data data
= {
857 .seq_server
= server
,
861 struct rpc_task_setup task_setup
= {
864 .callback_ops
= clp
->cl_mvops
->call_sync_ops
,
865 .callback_data
= &data
868 task
= rpc_run_task(&task_setup
);
872 ret
= task
->tk_status
;
879 int nfs4_call_sync(struct rpc_clnt
*clnt
,
880 struct nfs_server
*server
,
881 struct rpc_message
*msg
,
882 struct nfs4_sequence_args
*args
,
883 struct nfs4_sequence_res
*res
,
886 nfs4_init_sequence(args
, res
, cache_reply
);
887 return nfs4_call_sync_sequence(clnt
, server
, msg
, args
, res
);
890 static void update_changeattr(struct inode
*dir
, struct nfs4_change_info
*cinfo
)
892 struct nfs_inode
*nfsi
= NFS_I(dir
);
894 spin_lock(&dir
->i_lock
);
895 nfsi
->cache_validity
|= NFS_INO_INVALID_ATTR
|NFS_INO_INVALID_DATA
;
896 if (!cinfo
->atomic
|| cinfo
->before
!= dir
->i_version
)
897 nfs_force_lookup_revalidate(dir
);
898 dir
->i_version
= cinfo
->after
;
899 nfs_fscache_invalidate(dir
);
900 spin_unlock(&dir
->i_lock
);
903 struct nfs4_opendata
{
905 struct nfs_openargs o_arg
;
906 struct nfs_openres o_res
;
907 struct nfs_open_confirmargs c_arg
;
908 struct nfs_open_confirmres c_res
;
909 struct nfs4_string owner_name
;
910 struct nfs4_string group_name
;
911 struct nfs_fattr f_attr
;
912 struct nfs4_label
*f_label
;
914 struct dentry
*dentry
;
915 struct nfs4_state_owner
*owner
;
916 struct nfs4_state
*state
;
918 unsigned long timestamp
;
919 unsigned int rpc_done
: 1;
920 unsigned int file_created
: 1;
921 unsigned int is_recover
: 1;
926 static bool nfs4_clear_cap_atomic_open_v1(struct nfs_server
*server
,
927 int err
, struct nfs4_exception
*exception
)
931 if (!(server
->caps
& NFS_CAP_ATOMIC_OPEN_V1
))
933 server
->caps
&= ~NFS_CAP_ATOMIC_OPEN_V1
;
934 exception
->retry
= 1;
938 static enum open_claim_type4
939 nfs4_map_atomic_open_claim(struct nfs_server
*server
,
940 enum open_claim_type4 claim
)
942 if (server
->caps
& NFS_CAP_ATOMIC_OPEN_V1
)
947 case NFS4_OPEN_CLAIM_FH
:
948 return NFS4_OPEN_CLAIM_NULL
;
949 case NFS4_OPEN_CLAIM_DELEG_CUR_FH
:
950 return NFS4_OPEN_CLAIM_DELEGATE_CUR
;
951 case NFS4_OPEN_CLAIM_DELEG_PREV_FH
:
952 return NFS4_OPEN_CLAIM_DELEGATE_PREV
;
956 static void nfs4_init_opendata_res(struct nfs4_opendata
*p
)
958 p
->o_res
.f_attr
= &p
->f_attr
;
959 p
->o_res
.f_label
= p
->f_label
;
960 p
->o_res
.seqid
= p
->o_arg
.seqid
;
961 p
->c_res
.seqid
= p
->c_arg
.seqid
;
962 p
->o_res
.server
= p
->o_arg
.server
;
963 p
->o_res
.access_request
= p
->o_arg
.access
;
964 nfs_fattr_init(&p
->f_attr
);
965 nfs_fattr_init_names(&p
->f_attr
, &p
->owner_name
, &p
->group_name
);
968 static struct nfs4_opendata
*nfs4_opendata_alloc(struct dentry
*dentry
,
969 struct nfs4_state_owner
*sp
, fmode_t fmode
, int flags
,
970 const struct iattr
*attrs
,
971 struct nfs4_label
*label
,
972 enum open_claim_type4 claim
,
975 struct dentry
*parent
= dget_parent(dentry
);
976 struct inode
*dir
= parent
->d_inode
;
977 struct nfs_server
*server
= NFS_SERVER(dir
);
978 struct nfs4_opendata
*p
;
980 p
= kzalloc(sizeof(*p
), gfp_mask
);
984 p
->f_label
= nfs4_label_alloc(server
, gfp_mask
);
985 if (IS_ERR(p
->f_label
))
988 p
->o_arg
.seqid
= nfs_alloc_seqid(&sp
->so_seqid
, gfp_mask
);
989 if (p
->o_arg
.seqid
== NULL
)
991 nfs_sb_active(dentry
->d_sb
);
992 p
->dentry
= dget(dentry
);
995 atomic_inc(&sp
->so_count
);
996 p
->o_arg
.open_flags
= flags
;
997 p
->o_arg
.fmode
= fmode
& (FMODE_READ
|FMODE_WRITE
);
998 /* don't put an ACCESS op in OPEN compound if O_EXCL, because ACCESS
999 * will return permission denied for all bits until close */
1000 if (!(flags
& O_EXCL
)) {
1001 /* ask server to check for all possible rights as results
1003 p
->o_arg
.access
= NFS4_ACCESS_READ
| NFS4_ACCESS_MODIFY
|
1004 NFS4_ACCESS_EXTEND
| NFS4_ACCESS_EXECUTE
;
1006 p
->o_arg
.clientid
= server
->nfs_client
->cl_clientid
;
1007 p
->o_arg
.id
.create_time
= ktime_to_ns(sp
->so_seqid
.create_time
);
1008 p
->o_arg
.id
.uniquifier
= sp
->so_seqid
.owner_id
;
1009 p
->o_arg
.name
= &dentry
->d_name
;
1010 p
->o_arg
.server
= server
;
1011 p
->o_arg
.bitmask
= nfs4_bitmask(server
, label
);
1012 p
->o_arg
.open_bitmap
= &nfs4_fattr_bitmap
[0];
1013 p
->o_arg
.label
= label
;
1014 p
->o_arg
.claim
= nfs4_map_atomic_open_claim(server
, claim
);
1015 switch (p
->o_arg
.claim
) {
1016 case NFS4_OPEN_CLAIM_NULL
:
1017 case NFS4_OPEN_CLAIM_DELEGATE_CUR
:
1018 case NFS4_OPEN_CLAIM_DELEGATE_PREV
:
1019 p
->o_arg
.fh
= NFS_FH(dir
);
1021 case NFS4_OPEN_CLAIM_PREVIOUS
:
1022 case NFS4_OPEN_CLAIM_FH
:
1023 case NFS4_OPEN_CLAIM_DELEG_CUR_FH
:
1024 case NFS4_OPEN_CLAIM_DELEG_PREV_FH
:
1025 p
->o_arg
.fh
= NFS_FH(dentry
->d_inode
);
1027 if (attrs
!= NULL
&& attrs
->ia_valid
!= 0) {
1030 p
->o_arg
.u
.attrs
= &p
->attrs
;
1031 memcpy(&p
->attrs
, attrs
, sizeof(p
->attrs
));
1034 verf
[1] = current
->pid
;
1035 memcpy(p
->o_arg
.u
.verifier
.data
, verf
,
1036 sizeof(p
->o_arg
.u
.verifier
.data
));
1038 p
->c_arg
.fh
= &p
->o_res
.fh
;
1039 p
->c_arg
.stateid
= &p
->o_res
.stateid
;
1040 p
->c_arg
.seqid
= p
->o_arg
.seqid
;
1041 nfs4_init_opendata_res(p
);
1042 kref_init(&p
->kref
);
1046 nfs4_label_free(p
->f_label
);
1054 static void nfs4_opendata_free(struct kref
*kref
)
1056 struct nfs4_opendata
*p
= container_of(kref
,
1057 struct nfs4_opendata
, kref
);
1058 struct super_block
*sb
= p
->dentry
->d_sb
;
1060 nfs_free_seqid(p
->o_arg
.seqid
);
1061 if (p
->state
!= NULL
)
1062 nfs4_put_open_state(p
->state
);
1063 nfs4_put_state_owner(p
->owner
);
1065 nfs4_label_free(p
->f_label
);
1069 nfs_sb_deactive(sb
);
1070 nfs_fattr_free_names(&p
->f_attr
);
1074 static void nfs4_opendata_put(struct nfs4_opendata
*p
)
1077 kref_put(&p
->kref
, nfs4_opendata_free
);
1080 static int nfs4_wait_for_completion_rpc_task(struct rpc_task
*task
)
1084 ret
= rpc_wait_for_completion_task(task
);
1088 static int can_open_cached(struct nfs4_state
*state
, fmode_t mode
, int open_mode
)
1092 if (open_mode
& (O_EXCL
|O_TRUNC
))
1094 switch (mode
& (FMODE_READ
|FMODE_WRITE
)) {
1096 ret
|= test_bit(NFS_O_RDONLY_STATE
, &state
->flags
) != 0
1097 && state
->n_rdonly
!= 0;
1100 ret
|= test_bit(NFS_O_WRONLY_STATE
, &state
->flags
) != 0
1101 && state
->n_wronly
!= 0;
1103 case FMODE_READ
|FMODE_WRITE
:
1104 ret
|= test_bit(NFS_O_RDWR_STATE
, &state
->flags
) != 0
1105 && state
->n_rdwr
!= 0;
1111 static int can_open_delegated(struct nfs_delegation
*delegation
, fmode_t fmode
)
1113 if (delegation
== NULL
)
1115 if ((delegation
->type
& fmode
) != fmode
)
1117 if (test_bit(NFS_DELEGATION_NEED_RECLAIM
, &delegation
->flags
))
1119 if (test_bit(NFS_DELEGATION_RETURNING
, &delegation
->flags
))
1121 nfs_mark_delegation_referenced(delegation
);
1125 static void update_open_stateflags(struct nfs4_state
*state
, fmode_t fmode
)
1134 case FMODE_READ
|FMODE_WRITE
:
1137 nfs4_state_set_mode_locked(state
, state
->state
| fmode
);
1140 static void nfs_set_open_stateid_locked(struct nfs4_state
*state
, nfs4_stateid
*stateid
, fmode_t fmode
)
1142 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0)
1143 nfs4_stateid_copy(&state
->stateid
, stateid
);
1144 nfs4_stateid_copy(&state
->open_stateid
, stateid
);
1145 set_bit(NFS_OPEN_STATE
, &state
->flags
);
1148 set_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1151 set_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1153 case FMODE_READ
|FMODE_WRITE
:
1154 set_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1158 static void nfs_set_open_stateid(struct nfs4_state
*state
, nfs4_stateid
*stateid
, fmode_t fmode
)
1160 write_seqlock(&state
->seqlock
);
1161 nfs_set_open_stateid_locked(state
, stateid
, fmode
);
1162 write_sequnlock(&state
->seqlock
);
1165 static void __update_open_stateid(struct nfs4_state
*state
, nfs4_stateid
*open_stateid
, const nfs4_stateid
*deleg_stateid
, fmode_t fmode
)
1168 * Protect the call to nfs4_state_set_mode_locked and
1169 * serialise the stateid update
1171 write_seqlock(&state
->seqlock
);
1172 if (deleg_stateid
!= NULL
) {
1173 nfs4_stateid_copy(&state
->stateid
, deleg_stateid
);
1174 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1176 if (open_stateid
!= NULL
)
1177 nfs_set_open_stateid_locked(state
, open_stateid
, fmode
);
1178 write_sequnlock(&state
->seqlock
);
1179 spin_lock(&state
->owner
->so_lock
);
1180 update_open_stateflags(state
, fmode
);
1181 spin_unlock(&state
->owner
->so_lock
);
1184 static int update_open_stateid(struct nfs4_state
*state
, nfs4_stateid
*open_stateid
, nfs4_stateid
*delegation
, fmode_t fmode
)
1186 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
1187 struct nfs_delegation
*deleg_cur
;
1190 fmode
&= (FMODE_READ
|FMODE_WRITE
);
1193 deleg_cur
= rcu_dereference(nfsi
->delegation
);
1194 if (deleg_cur
== NULL
)
1197 spin_lock(&deleg_cur
->lock
);
1198 if (rcu_dereference(nfsi
->delegation
) != deleg_cur
||
1199 test_bit(NFS_DELEGATION_RETURNING
, &deleg_cur
->flags
) ||
1200 (deleg_cur
->type
& fmode
) != fmode
)
1201 goto no_delegation_unlock
;
1203 if (delegation
== NULL
)
1204 delegation
= &deleg_cur
->stateid
;
1205 else if (!nfs4_stateid_match(&deleg_cur
->stateid
, delegation
))
1206 goto no_delegation_unlock
;
1208 nfs_mark_delegation_referenced(deleg_cur
);
1209 __update_open_stateid(state
, open_stateid
, &deleg_cur
->stateid
, fmode
);
1211 no_delegation_unlock
:
1212 spin_unlock(&deleg_cur
->lock
);
1216 if (!ret
&& open_stateid
!= NULL
) {
1217 __update_open_stateid(state
, open_stateid
, NULL
, fmode
);
1225 static void nfs4_return_incompatible_delegation(struct inode
*inode
, fmode_t fmode
)
1227 struct nfs_delegation
*delegation
;
1230 delegation
= rcu_dereference(NFS_I(inode
)->delegation
);
1231 if (delegation
== NULL
|| (delegation
->type
& fmode
) == fmode
) {
1236 nfs4_inode_return_delegation(inode
);
1239 static struct nfs4_state
*nfs4_try_open_cached(struct nfs4_opendata
*opendata
)
1241 struct nfs4_state
*state
= opendata
->state
;
1242 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
1243 struct nfs_delegation
*delegation
;
1244 int open_mode
= opendata
->o_arg
.open_flags
;
1245 fmode_t fmode
= opendata
->o_arg
.fmode
;
1246 nfs4_stateid stateid
;
1250 if (can_open_cached(state
, fmode
, open_mode
)) {
1251 spin_lock(&state
->owner
->so_lock
);
1252 if (can_open_cached(state
, fmode
, open_mode
)) {
1253 update_open_stateflags(state
, fmode
);
1254 spin_unlock(&state
->owner
->so_lock
);
1255 goto out_return_state
;
1257 spin_unlock(&state
->owner
->so_lock
);
1260 delegation
= rcu_dereference(nfsi
->delegation
);
1261 if (!can_open_delegated(delegation
, fmode
)) {
1265 /* Save the delegation */
1266 nfs4_stateid_copy(&stateid
, &delegation
->stateid
);
1268 nfs_release_seqid(opendata
->o_arg
.seqid
);
1269 if (!opendata
->is_recover
) {
1270 ret
= nfs_may_open(state
->inode
, state
->owner
->so_cred
, open_mode
);
1276 /* Try to update the stateid using the delegation */
1277 if (update_open_stateid(state
, NULL
, &stateid
, fmode
))
1278 goto out_return_state
;
1281 return ERR_PTR(ret
);
1283 atomic_inc(&state
->count
);
1288 nfs4_opendata_check_deleg(struct nfs4_opendata
*data
, struct nfs4_state
*state
)
1290 struct nfs_client
*clp
= NFS_SERVER(state
->inode
)->nfs_client
;
1291 struct nfs_delegation
*delegation
;
1292 int delegation_flags
= 0;
1295 delegation
= rcu_dereference(NFS_I(state
->inode
)->delegation
);
1297 delegation_flags
= delegation
->flags
;
1299 if (data
->o_arg
.claim
== NFS4_OPEN_CLAIM_DELEGATE_CUR
) {
1300 pr_err_ratelimited("NFS: Broken NFSv4 server %s is "
1301 "returning a delegation for "
1302 "OPEN(CLAIM_DELEGATE_CUR)\n",
1304 } else if ((delegation_flags
& 1UL<<NFS_DELEGATION_NEED_RECLAIM
) == 0)
1305 nfs_inode_set_delegation(state
->inode
,
1306 data
->owner
->so_cred
,
1309 nfs_inode_reclaim_delegation(state
->inode
,
1310 data
->owner
->so_cred
,
1315 * Check the inode attributes against the CLAIM_PREVIOUS returned attributes
1316 * and update the nfs4_state.
1318 static struct nfs4_state
*
1319 _nfs4_opendata_reclaim_to_nfs4_state(struct nfs4_opendata
*data
)
1321 struct inode
*inode
= data
->state
->inode
;
1322 struct nfs4_state
*state
= data
->state
;
1325 if (!data
->rpc_done
) {
1326 if (data
->rpc_status
) {
1327 ret
= data
->rpc_status
;
1330 /* cached opens have already been processed */
1334 ret
= nfs_refresh_inode(inode
, &data
->f_attr
);
1338 if (data
->o_res
.delegation_type
!= 0)
1339 nfs4_opendata_check_deleg(data
, state
);
1341 update_open_stateid(state
, &data
->o_res
.stateid
, NULL
,
1343 atomic_inc(&state
->count
);
1347 return ERR_PTR(ret
);
1351 static struct nfs4_state
*
1352 _nfs4_opendata_to_nfs4_state(struct nfs4_opendata
*data
)
1354 struct inode
*inode
;
1355 struct nfs4_state
*state
= NULL
;
1358 if (!data
->rpc_done
) {
1359 state
= nfs4_try_open_cached(data
);
1364 if (!(data
->f_attr
.valid
& NFS_ATTR_FATTR
))
1366 inode
= nfs_fhget(data
->dir
->d_sb
, &data
->o_res
.fh
, &data
->f_attr
, data
->f_label
);
1367 ret
= PTR_ERR(inode
);
1371 state
= nfs4_get_open_state(inode
, data
->owner
);
1374 if (data
->o_res
.delegation_type
!= 0)
1375 nfs4_opendata_check_deleg(data
, state
);
1376 update_open_stateid(state
, &data
->o_res
.stateid
, NULL
,
1380 nfs_release_seqid(data
->o_arg
.seqid
);
1385 return ERR_PTR(ret
);
1388 static struct nfs4_state
*
1389 nfs4_opendata_to_nfs4_state(struct nfs4_opendata
*data
)
1391 if (data
->o_arg
.claim
== NFS4_OPEN_CLAIM_PREVIOUS
)
1392 return _nfs4_opendata_reclaim_to_nfs4_state(data
);
1393 return _nfs4_opendata_to_nfs4_state(data
);
1396 static struct nfs_open_context
*nfs4_state_find_open_context(struct nfs4_state
*state
)
1398 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
1399 struct nfs_open_context
*ctx
;
1401 spin_lock(&state
->inode
->i_lock
);
1402 list_for_each_entry(ctx
, &nfsi
->open_files
, list
) {
1403 if (ctx
->state
!= state
)
1405 get_nfs_open_context(ctx
);
1406 spin_unlock(&state
->inode
->i_lock
);
1409 spin_unlock(&state
->inode
->i_lock
);
1410 return ERR_PTR(-ENOENT
);
1413 static struct nfs4_opendata
*nfs4_open_recoverdata_alloc(struct nfs_open_context
*ctx
,
1414 struct nfs4_state
*state
, enum open_claim_type4 claim
)
1416 struct nfs4_opendata
*opendata
;
1418 opendata
= nfs4_opendata_alloc(ctx
->dentry
, state
->owner
, 0, 0,
1419 NULL
, NULL
, claim
, GFP_NOFS
);
1420 if (opendata
== NULL
)
1421 return ERR_PTR(-ENOMEM
);
1422 opendata
->state
= state
;
1423 atomic_inc(&state
->count
);
1427 static int nfs4_open_recover_helper(struct nfs4_opendata
*opendata
, fmode_t fmode
, struct nfs4_state
**res
)
1429 struct nfs4_state
*newstate
;
1432 opendata
->o_arg
.open_flags
= 0;
1433 opendata
->o_arg
.fmode
= fmode
;
1434 memset(&opendata
->o_res
, 0, sizeof(opendata
->o_res
));
1435 memset(&opendata
->c_res
, 0, sizeof(opendata
->c_res
));
1436 nfs4_init_opendata_res(opendata
);
1437 ret
= _nfs4_recover_proc_open(opendata
);
1440 newstate
= nfs4_opendata_to_nfs4_state(opendata
);
1441 if (IS_ERR(newstate
))
1442 return PTR_ERR(newstate
);
1443 nfs4_close_state(newstate
, fmode
);
1448 static int nfs4_open_recover(struct nfs4_opendata
*opendata
, struct nfs4_state
*state
)
1450 struct nfs4_state
*newstate
;
1453 /* memory barrier prior to reading state->n_* */
1454 clear_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1455 clear_bit(NFS_OPEN_STATE
, &state
->flags
);
1457 if (state
->n_rdwr
!= 0) {
1458 clear_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1459 ret
= nfs4_open_recover_helper(opendata
, FMODE_READ
|FMODE_WRITE
, &newstate
);
1462 if (newstate
!= state
)
1465 if (state
->n_wronly
!= 0) {
1466 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1467 ret
= nfs4_open_recover_helper(opendata
, FMODE_WRITE
, &newstate
);
1470 if (newstate
!= state
)
1473 if (state
->n_rdonly
!= 0) {
1474 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1475 ret
= nfs4_open_recover_helper(opendata
, FMODE_READ
, &newstate
);
1478 if (newstate
!= state
)
1482 * We may have performed cached opens for all three recoveries.
1483 * Check if we need to update the current stateid.
1485 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0 &&
1486 !nfs4_stateid_match(&state
->stateid
, &state
->open_stateid
)) {
1487 write_seqlock(&state
->seqlock
);
1488 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0)
1489 nfs4_stateid_copy(&state
->stateid
, &state
->open_stateid
);
1490 write_sequnlock(&state
->seqlock
);
1497 * reclaim state on the server after a reboot.
1499 static int _nfs4_do_open_reclaim(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1501 struct nfs_delegation
*delegation
;
1502 struct nfs4_opendata
*opendata
;
1503 fmode_t delegation_type
= 0;
1506 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
,
1507 NFS4_OPEN_CLAIM_PREVIOUS
);
1508 if (IS_ERR(opendata
))
1509 return PTR_ERR(opendata
);
1511 delegation
= rcu_dereference(NFS_I(state
->inode
)->delegation
);
1512 if (delegation
!= NULL
&& test_bit(NFS_DELEGATION_NEED_RECLAIM
, &delegation
->flags
) != 0)
1513 delegation_type
= delegation
->type
;
1515 opendata
->o_arg
.u
.delegation_type
= delegation_type
;
1516 status
= nfs4_open_recover(opendata
, state
);
1517 nfs4_opendata_put(opendata
);
1521 static int nfs4_do_open_reclaim(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1523 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1524 struct nfs4_exception exception
= { };
1527 err
= _nfs4_do_open_reclaim(ctx
, state
);
1528 trace_nfs4_open_reclaim(ctx
, 0, err
);
1529 if (nfs4_clear_cap_atomic_open_v1(server
, err
, &exception
))
1531 if (err
!= -NFS4ERR_DELAY
)
1533 nfs4_handle_exception(server
, err
, &exception
);
1534 } while (exception
.retry
);
1538 static int nfs4_open_reclaim(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
1540 struct nfs_open_context
*ctx
;
1543 ctx
= nfs4_state_find_open_context(state
);
1546 ret
= nfs4_do_open_reclaim(ctx
, state
);
1547 put_nfs_open_context(ctx
);
1551 static int nfs4_handle_delegation_recall_error(struct nfs_server
*server
, struct nfs4_state
*state
, const nfs4_stateid
*stateid
, int err
)
1555 printk(KERN_ERR
"NFS: %s: unhandled error "
1556 "%d.\n", __func__
, err
);
1561 case -NFS4ERR_BADSESSION
:
1562 case -NFS4ERR_BADSLOT
:
1563 case -NFS4ERR_BAD_HIGH_SLOT
:
1564 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
1565 case -NFS4ERR_DEADSESSION
:
1566 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1567 nfs4_schedule_session_recovery(server
->nfs_client
->cl_session
, err
);
1569 case -NFS4ERR_STALE_CLIENTID
:
1570 case -NFS4ERR_STALE_STATEID
:
1571 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1572 case -NFS4ERR_EXPIRED
:
1573 /* Don't recall a delegation if it was lost */
1574 nfs4_schedule_lease_recovery(server
->nfs_client
);
1576 case -NFS4ERR_MOVED
:
1577 nfs4_schedule_migration_recovery(server
);
1579 case -NFS4ERR_LEASE_MOVED
:
1580 nfs4_schedule_lease_moved_recovery(server
->nfs_client
);
1582 case -NFS4ERR_DELEG_REVOKED
:
1583 case -NFS4ERR_ADMIN_REVOKED
:
1584 case -NFS4ERR_BAD_STATEID
:
1585 case -NFS4ERR_OPENMODE
:
1586 nfs_inode_find_state_and_recover(state
->inode
,
1588 nfs4_schedule_stateid_recovery(server
, state
);
1590 case -NFS4ERR_DELAY
:
1591 case -NFS4ERR_GRACE
:
1592 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1596 case -NFS4ERR_DENIED
:
1597 /* kill_proc(fl->fl_pid, SIGLOST, 1); */
1603 int nfs4_open_delegation_recall(struct nfs_open_context
*ctx
, struct nfs4_state
*state
, const nfs4_stateid
*stateid
)
1605 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1606 struct nfs4_opendata
*opendata
;
1609 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
,
1610 NFS4_OPEN_CLAIM_DELEG_CUR_FH
);
1611 if (IS_ERR(opendata
))
1612 return PTR_ERR(opendata
);
1613 nfs4_stateid_copy(&opendata
->o_arg
.u
.delegation
, stateid
);
1614 err
= nfs4_open_recover(opendata
, state
);
1615 nfs4_opendata_put(opendata
);
1616 return nfs4_handle_delegation_recall_error(server
, state
, stateid
, err
);
1619 static void nfs4_open_confirm_prepare(struct rpc_task
*task
, void *calldata
)
1621 struct nfs4_opendata
*data
= calldata
;
1623 nfs40_setup_sequence(data
->o_arg
.server
, &data
->c_arg
.seq_args
,
1624 &data
->c_res
.seq_res
, task
);
1627 static void nfs4_open_confirm_done(struct rpc_task
*task
, void *calldata
)
1629 struct nfs4_opendata
*data
= calldata
;
1631 nfs40_sequence_done(task
, &data
->c_res
.seq_res
);
1633 data
->rpc_status
= task
->tk_status
;
1634 if (data
->rpc_status
== 0) {
1635 nfs4_stateid_copy(&data
->o_res
.stateid
, &data
->c_res
.stateid
);
1636 nfs_confirm_seqid(&data
->owner
->so_seqid
, 0);
1637 renew_lease(data
->o_res
.server
, data
->timestamp
);
1642 static void nfs4_open_confirm_release(void *calldata
)
1644 struct nfs4_opendata
*data
= calldata
;
1645 struct nfs4_state
*state
= NULL
;
1647 /* If this request hasn't been cancelled, do nothing */
1648 if (data
->cancelled
== 0)
1650 /* In case of error, no cleanup! */
1651 if (!data
->rpc_done
)
1653 state
= nfs4_opendata_to_nfs4_state(data
);
1655 nfs4_close_state(state
, data
->o_arg
.fmode
);
1657 nfs4_opendata_put(data
);
1660 static const struct rpc_call_ops nfs4_open_confirm_ops
= {
1661 .rpc_call_prepare
= nfs4_open_confirm_prepare
,
1662 .rpc_call_done
= nfs4_open_confirm_done
,
1663 .rpc_release
= nfs4_open_confirm_release
,
1667 * Note: On error, nfs4_proc_open_confirm will free the struct nfs4_opendata
1669 static int _nfs4_proc_open_confirm(struct nfs4_opendata
*data
)
1671 struct nfs_server
*server
= NFS_SERVER(data
->dir
->d_inode
);
1672 struct rpc_task
*task
;
1673 struct rpc_message msg
= {
1674 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_CONFIRM
],
1675 .rpc_argp
= &data
->c_arg
,
1676 .rpc_resp
= &data
->c_res
,
1677 .rpc_cred
= data
->owner
->so_cred
,
1679 struct rpc_task_setup task_setup_data
= {
1680 .rpc_client
= server
->client
,
1681 .rpc_message
= &msg
,
1682 .callback_ops
= &nfs4_open_confirm_ops
,
1683 .callback_data
= data
,
1684 .workqueue
= nfsiod_workqueue
,
1685 .flags
= RPC_TASK_ASYNC
,
1689 nfs4_init_sequence(&data
->c_arg
.seq_args
, &data
->c_res
.seq_res
, 1);
1690 kref_get(&data
->kref
);
1692 data
->rpc_status
= 0;
1693 data
->timestamp
= jiffies
;
1694 task
= rpc_run_task(&task_setup_data
);
1696 return PTR_ERR(task
);
1697 status
= nfs4_wait_for_completion_rpc_task(task
);
1699 data
->cancelled
= 1;
1702 status
= data
->rpc_status
;
1707 static void nfs4_open_prepare(struct rpc_task
*task
, void *calldata
)
1709 struct nfs4_opendata
*data
= calldata
;
1710 struct nfs4_state_owner
*sp
= data
->owner
;
1711 struct nfs_client
*clp
= sp
->so_server
->nfs_client
;
1713 if (nfs_wait_on_sequence(data
->o_arg
.seqid
, task
) != 0)
1716 * Check if we still need to send an OPEN call, or if we can use
1717 * a delegation instead.
1719 if (data
->state
!= NULL
) {
1720 struct nfs_delegation
*delegation
;
1722 if (can_open_cached(data
->state
, data
->o_arg
.fmode
, data
->o_arg
.open_flags
))
1725 delegation
= rcu_dereference(NFS_I(data
->state
->inode
)->delegation
);
1726 if (data
->o_arg
.claim
!= NFS4_OPEN_CLAIM_DELEGATE_CUR
&&
1727 data
->o_arg
.claim
!= NFS4_OPEN_CLAIM_DELEG_CUR_FH
&&
1728 can_open_delegated(delegation
, data
->o_arg
.fmode
))
1729 goto unlock_no_action
;
1732 /* Update client id. */
1733 data
->o_arg
.clientid
= clp
->cl_clientid
;
1734 switch (data
->o_arg
.claim
) {
1735 case NFS4_OPEN_CLAIM_PREVIOUS
:
1736 case NFS4_OPEN_CLAIM_DELEG_CUR_FH
:
1737 case NFS4_OPEN_CLAIM_DELEG_PREV_FH
:
1738 data
->o_arg
.open_bitmap
= &nfs4_open_noattr_bitmap
[0];
1739 case NFS4_OPEN_CLAIM_FH
:
1740 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_NOATTR
];
1741 nfs_copy_fh(&data
->o_res
.fh
, data
->o_arg
.fh
);
1743 data
->timestamp
= jiffies
;
1744 if (nfs4_setup_sequence(data
->o_arg
.server
,
1745 &data
->o_arg
.seq_args
,
1746 &data
->o_res
.seq_res
,
1748 nfs_release_seqid(data
->o_arg
.seqid
);
1750 /* Set the create mode (note dependency on the session type) */
1751 data
->o_arg
.createmode
= NFS4_CREATE_UNCHECKED
;
1752 if (data
->o_arg
.open_flags
& O_EXCL
) {
1753 data
->o_arg
.createmode
= NFS4_CREATE_EXCLUSIVE
;
1754 if (nfs4_has_persistent_session(clp
))
1755 data
->o_arg
.createmode
= NFS4_CREATE_GUARDED
;
1756 else if (clp
->cl_mvops
->minor_version
> 0)
1757 data
->o_arg
.createmode
= NFS4_CREATE_EXCLUSIVE4_1
;
1763 task
->tk_action
= NULL
;
1765 nfs4_sequence_done(task
, &data
->o_res
.seq_res
);
1768 static void nfs4_open_done(struct rpc_task
*task
, void *calldata
)
1770 struct nfs4_opendata
*data
= calldata
;
1772 data
->rpc_status
= task
->tk_status
;
1774 if (!nfs4_sequence_done(task
, &data
->o_res
.seq_res
))
1777 if (task
->tk_status
== 0) {
1778 if (data
->o_res
.f_attr
->valid
& NFS_ATTR_FATTR_TYPE
) {
1779 switch (data
->o_res
.f_attr
->mode
& S_IFMT
) {
1783 data
->rpc_status
= -ELOOP
;
1786 data
->rpc_status
= -EISDIR
;
1789 data
->rpc_status
= -ENOTDIR
;
1792 renew_lease(data
->o_res
.server
, data
->timestamp
);
1793 if (!(data
->o_res
.rflags
& NFS4_OPEN_RESULT_CONFIRM
))
1794 nfs_confirm_seqid(&data
->owner
->so_seqid
, 0);
1799 static void nfs4_open_release(void *calldata
)
1801 struct nfs4_opendata
*data
= calldata
;
1802 struct nfs4_state
*state
= NULL
;
1804 /* If this request hasn't been cancelled, do nothing */
1805 if (data
->cancelled
== 0)
1807 /* In case of error, no cleanup! */
1808 if (data
->rpc_status
!= 0 || !data
->rpc_done
)
1810 /* In case we need an open_confirm, no cleanup! */
1811 if (data
->o_res
.rflags
& NFS4_OPEN_RESULT_CONFIRM
)
1813 state
= nfs4_opendata_to_nfs4_state(data
);
1815 nfs4_close_state(state
, data
->o_arg
.fmode
);
1817 nfs4_opendata_put(data
);
1820 static const struct rpc_call_ops nfs4_open_ops
= {
1821 .rpc_call_prepare
= nfs4_open_prepare
,
1822 .rpc_call_done
= nfs4_open_done
,
1823 .rpc_release
= nfs4_open_release
,
1826 static int nfs4_run_open_task(struct nfs4_opendata
*data
, int isrecover
)
1828 struct inode
*dir
= data
->dir
->d_inode
;
1829 struct nfs_server
*server
= NFS_SERVER(dir
);
1830 struct nfs_openargs
*o_arg
= &data
->o_arg
;
1831 struct nfs_openres
*o_res
= &data
->o_res
;
1832 struct rpc_task
*task
;
1833 struct rpc_message msg
= {
1834 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN
],
1837 .rpc_cred
= data
->owner
->so_cred
,
1839 struct rpc_task_setup task_setup_data
= {
1840 .rpc_client
= server
->client
,
1841 .rpc_message
= &msg
,
1842 .callback_ops
= &nfs4_open_ops
,
1843 .callback_data
= data
,
1844 .workqueue
= nfsiod_workqueue
,
1845 .flags
= RPC_TASK_ASYNC
,
1849 nfs4_init_sequence(&o_arg
->seq_args
, &o_res
->seq_res
, 1);
1850 kref_get(&data
->kref
);
1852 data
->rpc_status
= 0;
1853 data
->cancelled
= 0;
1854 data
->is_recover
= 0;
1856 nfs4_set_sequence_privileged(&o_arg
->seq_args
);
1857 data
->is_recover
= 1;
1859 task
= rpc_run_task(&task_setup_data
);
1861 return PTR_ERR(task
);
1862 status
= nfs4_wait_for_completion_rpc_task(task
);
1864 data
->cancelled
= 1;
1867 status
= data
->rpc_status
;
1873 static int _nfs4_recover_proc_open(struct nfs4_opendata
*data
)
1875 struct inode
*dir
= data
->dir
->d_inode
;
1876 struct nfs_openres
*o_res
= &data
->o_res
;
1879 status
= nfs4_run_open_task(data
, 1);
1880 if (status
!= 0 || !data
->rpc_done
)
1883 nfs_fattr_map_and_free_names(NFS_SERVER(dir
), &data
->f_attr
);
1885 if (o_res
->rflags
& NFS4_OPEN_RESULT_CONFIRM
) {
1886 status
= _nfs4_proc_open_confirm(data
);
1894 static int nfs4_opendata_access(struct rpc_cred
*cred
,
1895 struct nfs4_opendata
*opendata
,
1896 struct nfs4_state
*state
, fmode_t fmode
,
1899 struct nfs_access_entry cache
;
1902 /* access call failed or for some reason the server doesn't
1903 * support any access modes -- defer access call until later */
1904 if (opendata
->o_res
.access_supported
== 0)
1908 /* don't check MAY_WRITE - a newly created file may not have
1909 * write mode bits, but POSIX allows the creating process to write.
1910 * use openflags to check for exec, because fmode won't
1911 * always have FMODE_EXEC set when file open for exec. */
1912 if (openflags
& __FMODE_EXEC
) {
1913 /* ONLY check for exec rights */
1915 } else if (fmode
& FMODE_READ
)
1919 cache
.jiffies
= jiffies
;
1920 nfs_access_set_mask(&cache
, opendata
->o_res
.access_result
);
1921 nfs_access_add_cache(state
->inode
, &cache
);
1923 if ((mask
& ~cache
.mask
& (MAY_READ
| MAY_EXEC
)) == 0)
1926 /* even though OPEN succeeded, access is denied. Close the file */
1927 nfs4_close_state(state
, fmode
);
1932 * Note: On error, nfs4_proc_open will free the struct nfs4_opendata
1934 static int _nfs4_proc_open(struct nfs4_opendata
*data
)
1936 struct inode
*dir
= data
->dir
->d_inode
;
1937 struct nfs_server
*server
= NFS_SERVER(dir
);
1938 struct nfs_openargs
*o_arg
= &data
->o_arg
;
1939 struct nfs_openres
*o_res
= &data
->o_res
;
1942 status
= nfs4_run_open_task(data
, 0);
1943 if (!data
->rpc_done
)
1946 if (status
== -NFS4ERR_BADNAME
&&
1947 !(o_arg
->open_flags
& O_CREAT
))
1952 nfs_fattr_map_and_free_names(server
, &data
->f_attr
);
1954 if (o_arg
->open_flags
& O_CREAT
) {
1955 update_changeattr(dir
, &o_res
->cinfo
);
1956 if (o_arg
->open_flags
& O_EXCL
)
1957 data
->file_created
= 1;
1958 else if (o_res
->cinfo
.before
!= o_res
->cinfo
.after
)
1959 data
->file_created
= 1;
1961 if ((o_res
->rflags
& NFS4_OPEN_RESULT_LOCKTYPE_POSIX
) == 0)
1962 server
->caps
&= ~NFS_CAP_POSIX_LOCK
;
1963 if(o_res
->rflags
& NFS4_OPEN_RESULT_CONFIRM
) {
1964 status
= _nfs4_proc_open_confirm(data
);
1968 if (!(o_res
->f_attr
->valid
& NFS_ATTR_FATTR
))
1969 _nfs4_proc_getattr(server
, &o_res
->fh
, o_res
->f_attr
, o_res
->f_label
);
1973 static int nfs4_recover_expired_lease(struct nfs_server
*server
)
1975 return nfs4_client_recover_expired_lease(server
->nfs_client
);
1980 * reclaim state on the server after a network partition.
1981 * Assumes caller holds the appropriate lock
1983 static int _nfs4_open_expired(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1985 struct nfs4_opendata
*opendata
;
1988 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
,
1989 NFS4_OPEN_CLAIM_FH
);
1990 if (IS_ERR(opendata
))
1991 return PTR_ERR(opendata
);
1992 ret
= nfs4_open_recover(opendata
, state
);
1994 d_drop(ctx
->dentry
);
1995 nfs4_opendata_put(opendata
);
1999 static int nfs4_do_open_expired(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
2001 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
2002 struct nfs4_exception exception
= { };
2006 err
= _nfs4_open_expired(ctx
, state
);
2007 trace_nfs4_open_expired(ctx
, 0, err
);
2008 if (nfs4_clear_cap_atomic_open_v1(server
, err
, &exception
))
2013 case -NFS4ERR_GRACE
:
2014 case -NFS4ERR_DELAY
:
2015 nfs4_handle_exception(server
, err
, &exception
);
2018 } while (exception
.retry
);
2023 static int nfs4_open_expired(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
2025 struct nfs_open_context
*ctx
;
2028 ctx
= nfs4_state_find_open_context(state
);
2031 ret
= nfs4_do_open_expired(ctx
, state
);
2032 put_nfs_open_context(ctx
);
2036 #if defined(CONFIG_NFS_V4_1)
2037 static void nfs41_clear_delegation_stateid(struct nfs4_state
*state
)
2039 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
2040 nfs4_stateid
*stateid
= &state
->stateid
;
2041 struct nfs_delegation
*delegation
;
2042 struct rpc_cred
*cred
= NULL
;
2043 int status
= -NFS4ERR_BAD_STATEID
;
2045 /* If a state reset has been done, test_stateid is unneeded */
2046 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0)
2049 /* Get the delegation credential for use by test/free_stateid */
2051 delegation
= rcu_dereference(NFS_I(state
->inode
)->delegation
);
2052 if (delegation
!= NULL
&&
2053 nfs4_stateid_match(&delegation
->stateid
, stateid
)) {
2054 cred
= get_rpccred(delegation
->cred
);
2056 status
= nfs41_test_stateid(server
, stateid
, cred
);
2057 trace_nfs4_test_delegation_stateid(state
, NULL
, status
);
2061 if (status
!= NFS_OK
) {
2062 /* Free the stateid unless the server explicitly
2063 * informs us the stateid is unrecognized. */
2064 if (status
!= -NFS4ERR_BAD_STATEID
)
2065 nfs41_free_stateid(server
, stateid
, cred
);
2066 nfs_remove_bad_delegation(state
->inode
);
2068 write_seqlock(&state
->seqlock
);
2069 nfs4_stateid_copy(&state
->stateid
, &state
->open_stateid
);
2070 write_sequnlock(&state
->seqlock
);
2071 clear_bit(NFS_DELEGATED_STATE
, &state
->flags
);
2079 * nfs41_check_open_stateid - possibly free an open stateid
2081 * @state: NFSv4 state for an inode
2083 * Returns NFS_OK if recovery for this stateid is now finished.
2084 * Otherwise a negative NFS4ERR value is returned.
2086 static int nfs41_check_open_stateid(struct nfs4_state
*state
)
2088 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
2089 nfs4_stateid
*stateid
= &state
->open_stateid
;
2090 struct rpc_cred
*cred
= state
->owner
->so_cred
;
2093 /* If a state reset has been done, test_stateid is unneeded */
2094 if ((test_bit(NFS_O_RDONLY_STATE
, &state
->flags
) == 0) &&
2095 (test_bit(NFS_O_WRONLY_STATE
, &state
->flags
) == 0) &&
2096 (test_bit(NFS_O_RDWR_STATE
, &state
->flags
) == 0))
2097 return -NFS4ERR_BAD_STATEID
;
2099 status
= nfs41_test_stateid(server
, stateid
, cred
);
2100 trace_nfs4_test_open_stateid(state
, NULL
, status
);
2101 if (status
!= NFS_OK
) {
2102 /* Free the stateid unless the server explicitly
2103 * informs us the stateid is unrecognized. */
2104 if (status
!= -NFS4ERR_BAD_STATEID
)
2105 nfs41_free_stateid(server
, stateid
, cred
);
2107 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
2108 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
2109 clear_bit(NFS_O_RDWR_STATE
, &state
->flags
);
2110 clear_bit(NFS_OPEN_STATE
, &state
->flags
);
2115 static int nfs41_open_expired(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
2119 nfs41_clear_delegation_stateid(state
);
2120 status
= nfs41_check_open_stateid(state
);
2121 if (status
!= NFS_OK
)
2122 status
= nfs4_open_expired(sp
, state
);
2128 * on an EXCLUSIVE create, the server should send back a bitmask with FATTR4-*
2129 * fields corresponding to attributes that were used to store the verifier.
2130 * Make sure we clobber those fields in the later setattr call
2132 static inline void nfs4_exclusive_attrset(struct nfs4_opendata
*opendata
, struct iattr
*sattr
)
2134 if ((opendata
->o_res
.attrset
[1] & FATTR4_WORD1_TIME_ACCESS
) &&
2135 !(sattr
->ia_valid
& ATTR_ATIME_SET
))
2136 sattr
->ia_valid
|= ATTR_ATIME
;
2138 if ((opendata
->o_res
.attrset
[1] & FATTR4_WORD1_TIME_MODIFY
) &&
2139 !(sattr
->ia_valid
& ATTR_MTIME_SET
))
2140 sattr
->ia_valid
|= ATTR_MTIME
;
2143 static int _nfs4_open_and_get_state(struct nfs4_opendata
*opendata
,
2146 struct nfs_open_context
*ctx
)
2148 struct nfs4_state_owner
*sp
= opendata
->owner
;
2149 struct nfs_server
*server
= sp
->so_server
;
2150 struct dentry
*dentry
;
2151 struct nfs4_state
*state
;
2155 seq
= raw_seqcount_begin(&sp
->so_reclaim_seqcount
);
2157 ret
= _nfs4_proc_open(opendata
);
2161 state
= nfs4_opendata_to_nfs4_state(opendata
);
2162 ret
= PTR_ERR(state
);
2165 if (server
->caps
& NFS_CAP_POSIX_LOCK
)
2166 set_bit(NFS_STATE_POSIX_LOCKS
, &state
->flags
);
2168 dentry
= opendata
->dentry
;
2169 if (dentry
->d_inode
== NULL
) {
2170 /* FIXME: Is this d_drop() ever needed? */
2172 dentry
= d_add_unique(dentry
, igrab(state
->inode
));
2173 if (dentry
== NULL
) {
2174 dentry
= opendata
->dentry
;
2175 } else if (dentry
!= ctx
->dentry
) {
2177 ctx
->dentry
= dget(dentry
);
2179 nfs_set_verifier(dentry
,
2180 nfs_save_change_attribute(opendata
->dir
->d_inode
));
2183 ret
= nfs4_opendata_access(sp
->so_cred
, opendata
, state
, fmode
, flags
);
2188 if (dentry
->d_inode
== state
->inode
) {
2189 nfs_inode_attach_open_context(ctx
);
2190 if (read_seqcount_retry(&sp
->so_reclaim_seqcount
, seq
))
2191 nfs4_schedule_stateid_recovery(server
, state
);
2198 * Returns a referenced nfs4_state
2200 static int _nfs4_do_open(struct inode
*dir
,
2201 struct nfs_open_context
*ctx
,
2203 struct iattr
*sattr
,
2204 struct nfs4_label
*label
,
2207 struct nfs4_state_owner
*sp
;
2208 struct nfs4_state
*state
= NULL
;
2209 struct nfs_server
*server
= NFS_SERVER(dir
);
2210 struct nfs4_opendata
*opendata
;
2211 struct dentry
*dentry
= ctx
->dentry
;
2212 struct rpc_cred
*cred
= ctx
->cred
;
2213 struct nfs4_threshold
**ctx_th
= &ctx
->mdsthreshold
;
2214 fmode_t fmode
= ctx
->mode
& (FMODE_READ
|FMODE_WRITE
|FMODE_EXEC
);
2215 enum open_claim_type4 claim
= NFS4_OPEN_CLAIM_NULL
;
2216 struct nfs4_label
*olabel
= NULL
;
2219 /* Protect against reboot recovery conflicts */
2221 sp
= nfs4_get_state_owner(server
, cred
, GFP_KERNEL
);
2223 dprintk("nfs4_do_open: nfs4_get_state_owner failed!\n");
2226 status
= nfs4_recover_expired_lease(server
);
2228 goto err_put_state_owner
;
2229 if (dentry
->d_inode
!= NULL
)
2230 nfs4_return_incompatible_delegation(dentry
->d_inode
, fmode
);
2232 if (dentry
->d_inode
)
2233 claim
= NFS4_OPEN_CLAIM_FH
;
2234 opendata
= nfs4_opendata_alloc(dentry
, sp
, fmode
, flags
, sattr
,
2235 label
, claim
, GFP_KERNEL
);
2236 if (opendata
== NULL
)
2237 goto err_put_state_owner
;
2240 olabel
= nfs4_label_alloc(server
, GFP_KERNEL
);
2241 if (IS_ERR(olabel
)) {
2242 status
= PTR_ERR(olabel
);
2243 goto err_opendata_put
;
2247 if (ctx_th
&& server
->attr_bitmask
[2] & FATTR4_WORD2_MDSTHRESHOLD
) {
2248 opendata
->f_attr
.mdsthreshold
= pnfs_mdsthreshold_alloc();
2249 if (!opendata
->f_attr
.mdsthreshold
)
2250 goto err_free_label
;
2251 opendata
->o_arg
.open_bitmap
= &nfs4_pnfs_open_bitmap
[0];
2253 if (dentry
->d_inode
!= NULL
)
2254 opendata
->state
= nfs4_get_open_state(dentry
->d_inode
, sp
);
2256 status
= _nfs4_open_and_get_state(opendata
, fmode
, flags
, ctx
);
2258 goto err_free_label
;
2261 if ((opendata
->o_arg
.open_flags
& O_EXCL
) &&
2262 (opendata
->o_arg
.createmode
!= NFS4_CREATE_GUARDED
)) {
2263 nfs4_exclusive_attrset(opendata
, sattr
);
2265 nfs_fattr_init(opendata
->o_res
.f_attr
);
2266 status
= nfs4_do_setattr(state
->inode
, cred
,
2267 opendata
->o_res
.f_attr
, sattr
,
2268 state
, label
, olabel
);
2270 nfs_setattr_update_inode(state
->inode
, sattr
);
2271 nfs_post_op_update_inode(state
->inode
, opendata
->o_res
.f_attr
);
2272 nfs_setsecurity(state
->inode
, opendata
->o_res
.f_attr
, olabel
);
2275 if (opendata
->file_created
)
2276 *opened
|= FILE_CREATED
;
2278 if (pnfs_use_threshold(ctx_th
, opendata
->f_attr
.mdsthreshold
, server
))
2279 *ctx_th
= opendata
->f_attr
.mdsthreshold
;
2281 kfree(opendata
->f_attr
.mdsthreshold
);
2282 opendata
->f_attr
.mdsthreshold
= NULL
;
2284 nfs4_label_free(olabel
);
2286 nfs4_opendata_put(opendata
);
2287 nfs4_put_state_owner(sp
);
2290 nfs4_label_free(olabel
);
2292 kfree(opendata
->f_attr
.mdsthreshold
);
2293 nfs4_opendata_put(opendata
);
2294 err_put_state_owner
:
2295 nfs4_put_state_owner(sp
);
2301 static struct nfs4_state
*nfs4_do_open(struct inode
*dir
,
2302 struct nfs_open_context
*ctx
,
2304 struct iattr
*sattr
,
2305 struct nfs4_label
*label
,
2308 struct nfs_server
*server
= NFS_SERVER(dir
);
2309 struct nfs4_exception exception
= { };
2310 struct nfs4_state
*res
;
2314 status
= _nfs4_do_open(dir
, ctx
, flags
, sattr
, label
, opened
);
2316 trace_nfs4_open_file(ctx
, flags
, status
);
2319 /* NOTE: BAD_SEQID means the server and client disagree about the
2320 * book-keeping w.r.t. state-changing operations
2321 * (OPEN/CLOSE/LOCK/LOCKU...)
2322 * It is actually a sign of a bug on the client or on the server.
2324 * If we receive a BAD_SEQID error in the particular case of
2325 * doing an OPEN, we assume that nfs_increment_open_seqid() will
2326 * have unhashed the old state_owner for us, and that we can
2327 * therefore safely retry using a new one. We should still warn
2328 * the user though...
2330 if (status
== -NFS4ERR_BAD_SEQID
) {
2331 pr_warn_ratelimited("NFS: v4 server %s "
2332 " returned a bad sequence-id error!\n",
2333 NFS_SERVER(dir
)->nfs_client
->cl_hostname
);
2334 exception
.retry
= 1;
2338 * BAD_STATEID on OPEN means that the server cancelled our
2339 * state before it received the OPEN_CONFIRM.
2340 * Recover by retrying the request as per the discussion
2341 * on Page 181 of RFC3530.
2343 if (status
== -NFS4ERR_BAD_STATEID
) {
2344 exception
.retry
= 1;
2347 if (status
== -EAGAIN
) {
2348 /* We must have found a delegation */
2349 exception
.retry
= 1;
2352 if (nfs4_clear_cap_atomic_open_v1(server
, status
, &exception
))
2354 res
= ERR_PTR(nfs4_handle_exception(server
,
2355 status
, &exception
));
2356 } while (exception
.retry
);
2360 static int _nfs4_do_setattr(struct inode
*inode
, struct rpc_cred
*cred
,
2361 struct nfs_fattr
*fattr
, struct iattr
*sattr
,
2362 struct nfs4_state
*state
, struct nfs4_label
*ilabel
,
2363 struct nfs4_label
*olabel
)
2365 struct nfs_server
*server
= NFS_SERVER(inode
);
2366 struct nfs_setattrargs arg
= {
2367 .fh
= NFS_FH(inode
),
2370 .bitmask
= server
->attr_bitmask
,
2373 struct nfs_setattrres res
= {
2378 struct rpc_message msg
= {
2379 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETATTR
],
2384 unsigned long timestamp
= jiffies
;
2389 arg
.bitmask
= nfs4_bitmask(server
, ilabel
);
2391 arg
.bitmask
= nfs4_bitmask(server
, olabel
);
2393 nfs_fattr_init(fattr
);
2395 /* Servers should only apply open mode checks for file size changes */
2396 truncate
= (sattr
->ia_valid
& ATTR_SIZE
) ? true : false;
2397 fmode
= truncate
? FMODE_WRITE
: FMODE_READ
;
2399 if (nfs4_copy_delegation_stateid(&arg
.stateid
, inode
, fmode
)) {
2400 /* Use that stateid */
2401 } else if (truncate
&& state
!= NULL
) {
2402 struct nfs_lockowner lockowner
= {
2403 .l_owner
= current
->files
,
2404 .l_pid
= current
->tgid
,
2406 if (!nfs4_valid_open_stateid(state
))
2408 if (nfs4_select_rw_stateid(&arg
.stateid
, state
, FMODE_WRITE
,
2409 &lockowner
) == -EIO
)
2412 nfs4_stateid_copy(&arg
.stateid
, &zero_stateid
);
2414 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
2415 if (status
== 0 && state
!= NULL
)
2416 renew_lease(server
, timestamp
);
2420 static int nfs4_do_setattr(struct inode
*inode
, struct rpc_cred
*cred
,
2421 struct nfs_fattr
*fattr
, struct iattr
*sattr
,
2422 struct nfs4_state
*state
, struct nfs4_label
*ilabel
,
2423 struct nfs4_label
*olabel
)
2425 struct nfs_server
*server
= NFS_SERVER(inode
);
2426 struct nfs4_exception exception
= {
2432 err
= _nfs4_do_setattr(inode
, cred
, fattr
, sattr
, state
, ilabel
, olabel
);
2433 trace_nfs4_setattr(inode
, err
);
2435 case -NFS4ERR_OPENMODE
:
2436 if (!(sattr
->ia_valid
& ATTR_SIZE
)) {
2437 pr_warn_once("NFSv4: server %s is incorrectly "
2438 "applying open mode checks to "
2439 "a SETATTR that is not "
2440 "changing file size.\n",
2441 server
->nfs_client
->cl_hostname
);
2443 if (state
&& !(state
->state
& FMODE_WRITE
)) {
2445 if (sattr
->ia_valid
& ATTR_OPEN
)
2450 err
= nfs4_handle_exception(server
, err
, &exception
);
2451 } while (exception
.retry
);
2456 struct nfs4_closedata
{
2457 struct inode
*inode
;
2458 struct nfs4_state
*state
;
2459 struct nfs_closeargs arg
;
2460 struct nfs_closeres res
;
2461 struct nfs_fattr fattr
;
2462 unsigned long timestamp
;
2467 static void nfs4_free_closedata(void *data
)
2469 struct nfs4_closedata
*calldata
= data
;
2470 struct nfs4_state_owner
*sp
= calldata
->state
->owner
;
2471 struct super_block
*sb
= calldata
->state
->inode
->i_sb
;
2474 pnfs_roc_release(calldata
->state
->inode
);
2475 nfs4_put_open_state(calldata
->state
);
2476 nfs_free_seqid(calldata
->arg
.seqid
);
2477 nfs4_put_state_owner(sp
);
2478 nfs_sb_deactive(sb
);
2482 static void nfs4_close_clear_stateid_flags(struct nfs4_state
*state
,
2485 spin_lock(&state
->owner
->so_lock
);
2486 clear_bit(NFS_O_RDWR_STATE
, &state
->flags
);
2487 switch (fmode
& (FMODE_READ
|FMODE_WRITE
)) {
2489 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
2492 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
2495 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
2496 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
2497 clear_bit(NFS_OPEN_STATE
, &state
->flags
);
2499 spin_unlock(&state
->owner
->so_lock
);
2502 static void nfs4_close_done(struct rpc_task
*task
, void *data
)
2504 struct nfs4_closedata
*calldata
= data
;
2505 struct nfs4_state
*state
= calldata
->state
;
2506 struct nfs_server
*server
= NFS_SERVER(calldata
->inode
);
2508 dprintk("%s: begin!\n", __func__
);
2509 if (!nfs4_sequence_done(task
, &calldata
->res
.seq_res
))
2511 trace_nfs4_close(state
, &calldata
->arg
, &calldata
->res
, task
->tk_status
);
2512 /* hmm. we are done with the inode, and in the process of freeing
2513 * the state_owner. we keep this around to process errors
2515 switch (task
->tk_status
) {
2518 pnfs_roc_set_barrier(state
->inode
,
2519 calldata
->roc_barrier
);
2520 nfs_set_open_stateid(state
, &calldata
->res
.stateid
, 0);
2521 renew_lease(server
, calldata
->timestamp
);
2523 case -NFS4ERR_ADMIN_REVOKED
:
2524 case -NFS4ERR_STALE_STATEID
:
2525 case -NFS4ERR_OLD_STATEID
:
2526 case -NFS4ERR_BAD_STATEID
:
2527 case -NFS4ERR_EXPIRED
:
2528 if (calldata
->arg
.fmode
== 0)
2531 if (nfs4_async_handle_error(task
, server
, state
) == -EAGAIN
) {
2532 rpc_restart_call_prepare(task
);
2536 nfs4_close_clear_stateid_flags(state
, calldata
->arg
.fmode
);
2538 nfs_release_seqid(calldata
->arg
.seqid
);
2539 nfs_refresh_inode(calldata
->inode
, calldata
->res
.fattr
);
2540 dprintk("%s: done, ret = %d!\n", __func__
, task
->tk_status
);
2543 static void nfs4_close_prepare(struct rpc_task
*task
, void *data
)
2545 struct nfs4_closedata
*calldata
= data
;
2546 struct nfs4_state
*state
= calldata
->state
;
2547 struct inode
*inode
= calldata
->inode
;
2550 dprintk("%s: begin!\n", __func__
);
2551 if (nfs_wait_on_sequence(calldata
->arg
.seqid
, task
) != 0)
2554 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_DOWNGRADE
];
2555 calldata
->arg
.fmode
= FMODE_READ
|FMODE_WRITE
;
2556 spin_lock(&state
->owner
->so_lock
);
2557 /* Calculate the change in open mode */
2558 if (state
->n_rdwr
== 0) {
2559 if (state
->n_rdonly
== 0) {
2560 call_close
|= test_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
2561 call_close
|= test_bit(NFS_O_RDWR_STATE
, &state
->flags
);
2562 calldata
->arg
.fmode
&= ~FMODE_READ
;
2564 if (state
->n_wronly
== 0) {
2565 call_close
|= test_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
2566 call_close
|= test_bit(NFS_O_RDWR_STATE
, &state
->flags
);
2567 calldata
->arg
.fmode
&= ~FMODE_WRITE
;
2570 if (!nfs4_valid_open_stateid(state
))
2572 spin_unlock(&state
->owner
->so_lock
);
2575 /* Note: exit _without_ calling nfs4_close_done */
2579 if (calldata
->arg
.fmode
== 0) {
2580 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CLOSE
];
2581 if (calldata
->roc
&&
2582 pnfs_roc_drain(inode
, &calldata
->roc_barrier
, task
)) {
2583 nfs_release_seqid(calldata
->arg
.seqid
);
2588 nfs_fattr_init(calldata
->res
.fattr
);
2589 calldata
->timestamp
= jiffies
;
2590 if (nfs4_setup_sequence(NFS_SERVER(inode
),
2591 &calldata
->arg
.seq_args
,
2592 &calldata
->res
.seq_res
,
2594 nfs_release_seqid(calldata
->arg
.seqid
);
2595 dprintk("%s: done!\n", __func__
);
2598 task
->tk_action
= NULL
;
2600 nfs4_sequence_done(task
, &calldata
->res
.seq_res
);
2603 static const struct rpc_call_ops nfs4_close_ops
= {
2604 .rpc_call_prepare
= nfs4_close_prepare
,
2605 .rpc_call_done
= nfs4_close_done
,
2606 .rpc_release
= nfs4_free_closedata
,
2610 * It is possible for data to be read/written from a mem-mapped file
2611 * after the sys_close call (which hits the vfs layer as a flush).
2612 * This means that we can't safely call nfsv4 close on a file until
2613 * the inode is cleared. This in turn means that we are not good
2614 * NFSv4 citizens - we do not indicate to the server to update the file's
2615 * share state even when we are done with one of the three share
2616 * stateid's in the inode.
2618 * NOTE: Caller must be holding the sp->so_owner semaphore!
2620 int nfs4_do_close(struct nfs4_state
*state
, gfp_t gfp_mask
, int wait
)
2622 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
2623 struct nfs4_closedata
*calldata
;
2624 struct nfs4_state_owner
*sp
= state
->owner
;
2625 struct rpc_task
*task
;
2626 struct rpc_message msg
= {
2627 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CLOSE
],
2628 .rpc_cred
= state
->owner
->so_cred
,
2630 struct rpc_task_setup task_setup_data
= {
2631 .rpc_client
= server
->client
,
2632 .rpc_message
= &msg
,
2633 .callback_ops
= &nfs4_close_ops
,
2634 .workqueue
= nfsiod_workqueue
,
2635 .flags
= RPC_TASK_ASYNC
,
2637 int status
= -ENOMEM
;
2639 nfs4_state_protect(server
->nfs_client
, NFS_SP4_MACH_CRED_CLEANUP
,
2640 &task_setup_data
.rpc_client
, &msg
);
2642 calldata
= kzalloc(sizeof(*calldata
), gfp_mask
);
2643 if (calldata
== NULL
)
2645 nfs4_init_sequence(&calldata
->arg
.seq_args
, &calldata
->res
.seq_res
, 1);
2646 calldata
->inode
= state
->inode
;
2647 calldata
->state
= state
;
2648 calldata
->arg
.fh
= NFS_FH(state
->inode
);
2649 calldata
->arg
.stateid
= &state
->open_stateid
;
2650 /* Serialization for the sequence id */
2651 calldata
->arg
.seqid
= nfs_alloc_seqid(&state
->owner
->so_seqid
, gfp_mask
);
2652 if (calldata
->arg
.seqid
== NULL
)
2653 goto out_free_calldata
;
2654 calldata
->arg
.fmode
= 0;
2655 calldata
->arg
.bitmask
= server
->cache_consistency_bitmask
;
2656 calldata
->res
.fattr
= &calldata
->fattr
;
2657 calldata
->res
.seqid
= calldata
->arg
.seqid
;
2658 calldata
->res
.server
= server
;
2659 calldata
->roc
= pnfs_roc(state
->inode
);
2660 nfs_sb_active(calldata
->inode
->i_sb
);
2662 msg
.rpc_argp
= &calldata
->arg
;
2663 msg
.rpc_resp
= &calldata
->res
;
2664 task_setup_data
.callback_data
= calldata
;
2665 task
= rpc_run_task(&task_setup_data
);
2667 return PTR_ERR(task
);
2670 status
= rpc_wait_for_completion_task(task
);
2676 nfs4_put_open_state(state
);
2677 nfs4_put_state_owner(sp
);
2681 static struct inode
*
2682 nfs4_atomic_open(struct inode
*dir
, struct nfs_open_context
*ctx
,
2683 int open_flags
, struct iattr
*attr
, int *opened
)
2685 struct nfs4_state
*state
;
2686 struct nfs4_label l
= {0, 0, 0, NULL
}, *label
= NULL
;
2688 label
= nfs4_label_init_security(dir
, ctx
->dentry
, attr
, &l
);
2690 /* Protect against concurrent sillydeletes */
2691 state
= nfs4_do_open(dir
, ctx
, open_flags
, attr
, label
, opened
);
2693 nfs4_label_release_security(label
);
2696 return ERR_CAST(state
);
2697 return state
->inode
;
2700 static void nfs4_close_context(struct nfs_open_context
*ctx
, int is_sync
)
2702 if (ctx
->state
== NULL
)
2705 nfs4_close_sync(ctx
->state
, ctx
->mode
);
2707 nfs4_close_state(ctx
->state
, ctx
->mode
);
2710 #define FATTR4_WORD1_NFS40_MASK (2*FATTR4_WORD1_MOUNTED_ON_FILEID - 1UL)
2711 #define FATTR4_WORD2_NFS41_MASK (2*FATTR4_WORD2_SUPPATTR_EXCLCREAT - 1UL)
2712 #define FATTR4_WORD2_NFS42_MASK (2*FATTR4_WORD2_CHANGE_SECURITY_LABEL - 1UL)
2714 static int _nfs4_server_capabilities(struct nfs_server
*server
, struct nfs_fh
*fhandle
)
2716 struct nfs4_server_caps_arg args
= {
2719 struct nfs4_server_caps_res res
= {};
2720 struct rpc_message msg
= {
2721 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SERVER_CAPS
],
2727 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2729 /* Sanity check the server answers */
2730 switch (server
->nfs_client
->cl_minorversion
) {
2732 res
.attr_bitmask
[1] &= FATTR4_WORD1_NFS40_MASK
;
2733 res
.attr_bitmask
[2] = 0;
2736 res
.attr_bitmask
[2] &= FATTR4_WORD2_NFS41_MASK
;
2739 res
.attr_bitmask
[2] &= FATTR4_WORD2_NFS42_MASK
;
2741 memcpy(server
->attr_bitmask
, res
.attr_bitmask
, sizeof(server
->attr_bitmask
));
2742 server
->caps
&= ~(NFS_CAP_ACLS
|NFS_CAP_HARDLINKS
|
2743 NFS_CAP_SYMLINKS
|NFS_CAP_FILEID
|
2744 NFS_CAP_MODE
|NFS_CAP_NLINK
|NFS_CAP_OWNER
|
2745 NFS_CAP_OWNER_GROUP
|NFS_CAP_ATIME
|
2746 NFS_CAP_CTIME
|NFS_CAP_MTIME
|
2747 NFS_CAP_SECURITY_LABEL
);
2748 if (res
.attr_bitmask
[0] & FATTR4_WORD0_ACL
&&
2749 res
.acl_bitmask
& ACL4_SUPPORT_ALLOW_ACL
)
2750 server
->caps
|= NFS_CAP_ACLS
;
2751 if (res
.has_links
!= 0)
2752 server
->caps
|= NFS_CAP_HARDLINKS
;
2753 if (res
.has_symlinks
!= 0)
2754 server
->caps
|= NFS_CAP_SYMLINKS
;
2755 if (res
.attr_bitmask
[0] & FATTR4_WORD0_FILEID
)
2756 server
->caps
|= NFS_CAP_FILEID
;
2757 if (res
.attr_bitmask
[1] & FATTR4_WORD1_MODE
)
2758 server
->caps
|= NFS_CAP_MODE
;
2759 if (res
.attr_bitmask
[1] & FATTR4_WORD1_NUMLINKS
)
2760 server
->caps
|= NFS_CAP_NLINK
;
2761 if (res
.attr_bitmask
[1] & FATTR4_WORD1_OWNER
)
2762 server
->caps
|= NFS_CAP_OWNER
;
2763 if (res
.attr_bitmask
[1] & FATTR4_WORD1_OWNER_GROUP
)
2764 server
->caps
|= NFS_CAP_OWNER_GROUP
;
2765 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_ACCESS
)
2766 server
->caps
|= NFS_CAP_ATIME
;
2767 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_METADATA
)
2768 server
->caps
|= NFS_CAP_CTIME
;
2769 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_MODIFY
)
2770 server
->caps
|= NFS_CAP_MTIME
;
2771 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
2772 if (res
.attr_bitmask
[2] & FATTR4_WORD2_SECURITY_LABEL
)
2773 server
->caps
|= NFS_CAP_SECURITY_LABEL
;
2775 memcpy(server
->attr_bitmask_nl
, res
.attr_bitmask
,
2776 sizeof(server
->attr_bitmask
));
2777 server
->attr_bitmask_nl
[2] &= ~FATTR4_WORD2_SECURITY_LABEL
;
2779 memcpy(server
->cache_consistency_bitmask
, res
.attr_bitmask
, sizeof(server
->cache_consistency_bitmask
));
2780 server
->cache_consistency_bitmask
[0] &= FATTR4_WORD0_CHANGE
|FATTR4_WORD0_SIZE
;
2781 server
->cache_consistency_bitmask
[1] &= FATTR4_WORD1_TIME_METADATA
|FATTR4_WORD1_TIME_MODIFY
;
2782 server
->cache_consistency_bitmask
[2] = 0;
2783 server
->acl_bitmask
= res
.acl_bitmask
;
2784 server
->fh_expire_type
= res
.fh_expire_type
;
2790 int nfs4_server_capabilities(struct nfs_server
*server
, struct nfs_fh
*fhandle
)
2792 struct nfs4_exception exception
= { };
2795 err
= nfs4_handle_exception(server
,
2796 _nfs4_server_capabilities(server
, fhandle
),
2798 } while (exception
.retry
);
2802 static int _nfs4_lookup_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2803 struct nfs_fsinfo
*info
)
2806 struct nfs4_lookup_root_arg args
= {
2809 struct nfs4_lookup_res res
= {
2811 .fattr
= info
->fattr
,
2814 struct rpc_message msg
= {
2815 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOOKUP_ROOT
],
2820 bitmask
[0] = nfs4_fattr_bitmap
[0];
2821 bitmask
[1] = nfs4_fattr_bitmap
[1];
2823 * Process the label in the upcoming getfattr
2825 bitmask
[2] = nfs4_fattr_bitmap
[2] & ~FATTR4_WORD2_SECURITY_LABEL
;
2827 nfs_fattr_init(info
->fattr
);
2828 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2831 static int nfs4_lookup_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2832 struct nfs_fsinfo
*info
)
2834 struct nfs4_exception exception
= { };
2837 err
= _nfs4_lookup_root(server
, fhandle
, info
);
2838 trace_nfs4_lookup_root(server
, fhandle
, info
->fattr
, err
);
2841 case -NFS4ERR_WRONGSEC
:
2844 err
= nfs4_handle_exception(server
, err
, &exception
);
2846 } while (exception
.retry
);
2851 static int nfs4_lookup_root_sec(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2852 struct nfs_fsinfo
*info
, rpc_authflavor_t flavor
)
2854 struct rpc_auth_create_args auth_args
= {
2855 .pseudoflavor
= flavor
,
2857 struct rpc_auth
*auth
;
2860 auth
= rpcauth_create(&auth_args
, server
->client
);
2865 ret
= nfs4_lookup_root(server
, fhandle
, info
);
2871 * Retry pseudoroot lookup with various security flavors. We do this when:
2873 * NFSv4.0: the PUTROOTFH operation returns NFS4ERR_WRONGSEC
2874 * NFSv4.1: the server does not support the SECINFO_NO_NAME operation
2876 * Returns zero on success, or a negative NFS4ERR value, or a
2877 * negative errno value.
2879 static int nfs4_find_root_sec(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2880 struct nfs_fsinfo
*info
)
2882 /* Per 3530bis 15.33.5 */
2883 static const rpc_authflavor_t flav_array
[] = {
2887 RPC_AUTH_UNIX
, /* courtesy */
2890 int status
= -EPERM
;
2893 if (server
->auth_info
.flavor_len
> 0) {
2894 /* try each flavor specified by user */
2895 for (i
= 0; i
< server
->auth_info
.flavor_len
; i
++) {
2896 status
= nfs4_lookup_root_sec(server
, fhandle
, info
,
2897 server
->auth_info
.flavors
[i
]);
2898 if (status
== -NFS4ERR_WRONGSEC
|| status
== -EACCES
)
2903 /* no flavors specified by user, try default list */
2904 for (i
= 0; i
< ARRAY_SIZE(flav_array
); i
++) {
2905 status
= nfs4_lookup_root_sec(server
, fhandle
, info
,
2907 if (status
== -NFS4ERR_WRONGSEC
|| status
== -EACCES
)
2914 * -EACCESS could mean that the user doesn't have correct permissions
2915 * to access the mount. It could also mean that we tried to mount
2916 * with a gss auth flavor, but rpc.gssd isn't running. Either way,
2917 * existing mount programs don't handle -EACCES very well so it should
2918 * be mapped to -EPERM instead.
2920 if (status
== -EACCES
)
2925 static int nfs4_do_find_root_sec(struct nfs_server
*server
,
2926 struct nfs_fh
*fhandle
, struct nfs_fsinfo
*info
)
2928 int mv
= server
->nfs_client
->cl_minorversion
;
2929 return nfs_v4_minor_ops
[mv
]->find_root_sec(server
, fhandle
, info
);
2933 * nfs4_proc_get_rootfh - get file handle for server's pseudoroot
2934 * @server: initialized nfs_server handle
2935 * @fhandle: we fill in the pseudo-fs root file handle
2936 * @info: we fill in an FSINFO struct
2937 * @auth_probe: probe the auth flavours
2939 * Returns zero on success, or a negative errno.
2941 int nfs4_proc_get_rootfh(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2942 struct nfs_fsinfo
*info
,
2947 switch (auth_probe
) {
2949 status
= nfs4_lookup_root(server
, fhandle
, info
);
2950 if (status
!= -NFS4ERR_WRONGSEC
)
2953 status
= nfs4_do_find_root_sec(server
, fhandle
, info
);
2957 status
= nfs4_server_capabilities(server
, fhandle
);
2959 status
= nfs4_do_fsinfo(server
, fhandle
, info
);
2961 return nfs4_map_errors(status
);
2964 static int nfs4_proc_get_root(struct nfs_server
*server
, struct nfs_fh
*mntfh
,
2965 struct nfs_fsinfo
*info
)
2968 struct nfs_fattr
*fattr
= info
->fattr
;
2969 struct nfs4_label
*label
= NULL
;
2971 error
= nfs4_server_capabilities(server
, mntfh
);
2973 dprintk("nfs4_get_root: getcaps error = %d\n", -error
);
2977 label
= nfs4_label_alloc(server
, GFP_KERNEL
);
2979 return PTR_ERR(label
);
2981 error
= nfs4_proc_getattr(server
, mntfh
, fattr
, label
);
2983 dprintk("nfs4_get_root: getattr error = %d\n", -error
);
2984 goto err_free_label
;
2987 if (fattr
->valid
& NFS_ATTR_FATTR_FSID
&&
2988 !nfs_fsid_equal(&server
->fsid
, &fattr
->fsid
))
2989 memcpy(&server
->fsid
, &fattr
->fsid
, sizeof(server
->fsid
));
2992 nfs4_label_free(label
);
2998 * Get locations and (maybe) other attributes of a referral.
2999 * Note that we'll actually follow the referral later when
3000 * we detect fsid mismatch in inode revalidation
3002 static int nfs4_get_referral(struct rpc_clnt
*client
, struct inode
*dir
,
3003 const struct qstr
*name
, struct nfs_fattr
*fattr
,
3004 struct nfs_fh
*fhandle
)
3006 int status
= -ENOMEM
;
3007 struct page
*page
= NULL
;
3008 struct nfs4_fs_locations
*locations
= NULL
;
3010 page
= alloc_page(GFP_KERNEL
);
3013 locations
= kmalloc(sizeof(struct nfs4_fs_locations
), GFP_KERNEL
);
3014 if (locations
== NULL
)
3017 status
= nfs4_proc_fs_locations(client
, dir
, name
, locations
, page
);
3022 * If the fsid didn't change, this is a migration event, not a
3023 * referral. Cause us to drop into the exception handler, which
3024 * will kick off migration recovery.
3026 if (nfs_fsid_equal(&NFS_SERVER(dir
)->fsid
, &locations
->fattr
.fsid
)) {
3027 dprintk("%s: server did not return a different fsid for"
3028 " a referral at %s\n", __func__
, name
->name
);
3029 status
= -NFS4ERR_MOVED
;
3032 /* Fixup attributes for the nfs_lookup() call to nfs_fhget() */
3033 nfs_fixup_referral_attributes(&locations
->fattr
);
3035 /* replace the lookup nfs_fattr with the locations nfs_fattr */
3036 memcpy(fattr
, &locations
->fattr
, sizeof(struct nfs_fattr
));
3037 memset(fhandle
, 0, sizeof(struct nfs_fh
));
3045 static int _nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3046 struct nfs_fattr
*fattr
, struct nfs4_label
*label
)
3048 struct nfs4_getattr_arg args
= {
3050 .bitmask
= server
->attr_bitmask
,
3052 struct nfs4_getattr_res res
= {
3057 struct rpc_message msg
= {
3058 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETATTR
],
3063 args
.bitmask
= nfs4_bitmask(server
, label
);
3065 nfs_fattr_init(fattr
);
3066 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3069 static int nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3070 struct nfs_fattr
*fattr
, struct nfs4_label
*label
)
3072 struct nfs4_exception exception
= { };
3075 err
= _nfs4_proc_getattr(server
, fhandle
, fattr
, label
);
3076 trace_nfs4_getattr(server
, fhandle
, fattr
, err
);
3077 err
= nfs4_handle_exception(server
, err
,
3079 } while (exception
.retry
);
3084 * The file is not closed if it is opened due to the a request to change
3085 * the size of the file. The open call will not be needed once the
3086 * VFS layer lookup-intents are implemented.
3088 * Close is called when the inode is destroyed.
3089 * If we haven't opened the file for O_WRONLY, we
3090 * need to in the size_change case to obtain a stateid.
3093 * Because OPEN is always done by name in nfsv4, it is
3094 * possible that we opened a different file by the same
3095 * name. We can recognize this race condition, but we
3096 * can't do anything about it besides returning an error.
3098 * This will be fixed with VFS changes (lookup-intent).
3101 nfs4_proc_setattr(struct dentry
*dentry
, struct nfs_fattr
*fattr
,
3102 struct iattr
*sattr
)
3104 struct inode
*inode
= dentry
->d_inode
;
3105 struct rpc_cred
*cred
= NULL
;
3106 struct nfs4_state
*state
= NULL
;
3107 struct nfs4_label
*label
= NULL
;
3110 if (pnfs_ld_layoutret_on_setattr(inode
))
3111 pnfs_commit_and_return_layout(inode
);
3113 nfs_fattr_init(fattr
);
3115 /* Deal with open(O_TRUNC) */
3116 if (sattr
->ia_valid
& ATTR_OPEN
)
3117 sattr
->ia_valid
&= ~(ATTR_MTIME
|ATTR_CTIME
);
3119 /* Optimization: if the end result is no change, don't RPC */
3120 if ((sattr
->ia_valid
& ~(ATTR_FILE
|ATTR_OPEN
)) == 0)
3123 /* Search for an existing open(O_WRITE) file */
3124 if (sattr
->ia_valid
& ATTR_FILE
) {
3125 struct nfs_open_context
*ctx
;
3127 ctx
= nfs_file_open_context(sattr
->ia_file
);
3134 label
= nfs4_label_alloc(NFS_SERVER(inode
), GFP_KERNEL
);
3136 return PTR_ERR(label
);
3138 status
= nfs4_do_setattr(inode
, cred
, fattr
, sattr
, state
, NULL
, label
);
3140 nfs_setattr_update_inode(inode
, sattr
);
3141 nfs_setsecurity(inode
, fattr
, label
);
3143 nfs4_label_free(label
);
3147 static int _nfs4_proc_lookup(struct rpc_clnt
*clnt
, struct inode
*dir
,
3148 const struct qstr
*name
, struct nfs_fh
*fhandle
,
3149 struct nfs_fattr
*fattr
, struct nfs4_label
*label
)
3151 struct nfs_server
*server
= NFS_SERVER(dir
);
3153 struct nfs4_lookup_arg args
= {
3154 .bitmask
= server
->attr_bitmask
,
3155 .dir_fh
= NFS_FH(dir
),
3158 struct nfs4_lookup_res res
= {
3164 struct rpc_message msg
= {
3165 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOOKUP
],
3170 args
.bitmask
= nfs4_bitmask(server
, label
);
3172 nfs_fattr_init(fattr
);
3174 dprintk("NFS call lookup %s\n", name
->name
);
3175 status
= nfs4_call_sync(clnt
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3176 dprintk("NFS reply lookup: %d\n", status
);
3180 static void nfs_fixup_secinfo_attributes(struct nfs_fattr
*fattr
)
3182 fattr
->valid
|= NFS_ATTR_FATTR_TYPE
| NFS_ATTR_FATTR_MODE
|
3183 NFS_ATTR_FATTR_NLINK
| NFS_ATTR_FATTR_MOUNTPOINT
;
3184 fattr
->mode
= S_IFDIR
| S_IRUGO
| S_IXUGO
;
3188 static int nfs4_proc_lookup_common(struct rpc_clnt
**clnt
, struct inode
*dir
,
3189 struct qstr
*name
, struct nfs_fh
*fhandle
,
3190 struct nfs_fattr
*fattr
, struct nfs4_label
*label
)
3192 struct nfs4_exception exception
= { };
3193 struct rpc_clnt
*client
= *clnt
;
3196 err
= _nfs4_proc_lookup(client
, dir
, name
, fhandle
, fattr
, label
);
3197 trace_nfs4_lookup(dir
, name
, err
);
3199 case -NFS4ERR_BADNAME
:
3202 case -NFS4ERR_MOVED
:
3203 err
= nfs4_get_referral(client
, dir
, name
, fattr
, fhandle
);
3205 case -NFS4ERR_WRONGSEC
:
3207 if (client
!= *clnt
)
3209 client
= nfs4_create_sec_client(client
, dir
, name
);
3211 return PTR_ERR(client
);
3213 exception
.retry
= 1;
3216 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
, &exception
);
3218 } while (exception
.retry
);
3223 else if (client
!= *clnt
)
3224 rpc_shutdown_client(client
);
3229 static int nfs4_proc_lookup(struct inode
*dir
, struct qstr
*name
,
3230 struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
,
3231 struct nfs4_label
*label
)
3234 struct rpc_clnt
*client
= NFS_CLIENT(dir
);
3236 status
= nfs4_proc_lookup_common(&client
, dir
, name
, fhandle
, fattr
, label
);
3237 if (client
!= NFS_CLIENT(dir
)) {
3238 rpc_shutdown_client(client
);
3239 nfs_fixup_secinfo_attributes(fattr
);
3245 nfs4_proc_lookup_mountpoint(struct inode
*dir
, struct qstr
*name
,
3246 struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
3248 struct rpc_clnt
*client
= NFS_CLIENT(dir
);
3251 status
= nfs4_proc_lookup_common(&client
, dir
, name
, fhandle
, fattr
, NULL
);
3253 return ERR_PTR(status
);
3254 return (client
== NFS_CLIENT(dir
)) ? rpc_clone_client(client
) : client
;
3257 static int _nfs4_proc_access(struct inode
*inode
, struct nfs_access_entry
*entry
)
3259 struct nfs_server
*server
= NFS_SERVER(inode
);
3260 struct nfs4_accessargs args
= {
3261 .fh
= NFS_FH(inode
),
3262 .bitmask
= server
->cache_consistency_bitmask
,
3264 struct nfs4_accessres res
= {
3267 struct rpc_message msg
= {
3268 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_ACCESS
],
3271 .rpc_cred
= entry
->cred
,
3273 int mode
= entry
->mask
;
3277 * Determine which access bits we want to ask for...
3279 if (mode
& MAY_READ
)
3280 args
.access
|= NFS4_ACCESS_READ
;
3281 if (S_ISDIR(inode
->i_mode
)) {
3282 if (mode
& MAY_WRITE
)
3283 args
.access
|= NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
| NFS4_ACCESS_DELETE
;
3284 if (mode
& MAY_EXEC
)
3285 args
.access
|= NFS4_ACCESS_LOOKUP
;
3287 if (mode
& MAY_WRITE
)
3288 args
.access
|= NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
;
3289 if (mode
& MAY_EXEC
)
3290 args
.access
|= NFS4_ACCESS_EXECUTE
;
3293 res
.fattr
= nfs_alloc_fattr();
3294 if (res
.fattr
== NULL
)
3297 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3299 nfs_access_set_mask(entry
, res
.access
);
3300 nfs_refresh_inode(inode
, res
.fattr
);
3302 nfs_free_fattr(res
.fattr
);
3306 static int nfs4_proc_access(struct inode
*inode
, struct nfs_access_entry
*entry
)
3308 struct nfs4_exception exception
= { };
3311 err
= _nfs4_proc_access(inode
, entry
);
3312 trace_nfs4_access(inode
, err
);
3313 err
= nfs4_handle_exception(NFS_SERVER(inode
), err
,
3315 } while (exception
.retry
);
3320 * TODO: For the time being, we don't try to get any attributes
3321 * along with any of the zero-copy operations READ, READDIR,
3324 * In the case of the first three, we want to put the GETATTR
3325 * after the read-type operation -- this is because it is hard
3326 * to predict the length of a GETATTR response in v4, and thus
3327 * align the READ data correctly. This means that the GETATTR
3328 * may end up partially falling into the page cache, and we should
3329 * shift it into the 'tail' of the xdr_buf before processing.
3330 * To do this efficiently, we need to know the total length
3331 * of data received, which doesn't seem to be available outside
3334 * In the case of WRITE, we also want to put the GETATTR after
3335 * the operation -- in this case because we want to make sure
3336 * we get the post-operation mtime and size.
3338 * Both of these changes to the XDR layer would in fact be quite
3339 * minor, but I decided to leave them for a subsequent patch.
3341 static int _nfs4_proc_readlink(struct inode
*inode
, struct page
*page
,
3342 unsigned int pgbase
, unsigned int pglen
)
3344 struct nfs4_readlink args
= {
3345 .fh
= NFS_FH(inode
),
3350 struct nfs4_readlink_res res
;
3351 struct rpc_message msg
= {
3352 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READLINK
],
3357 return nfs4_call_sync(NFS_SERVER(inode
)->client
, NFS_SERVER(inode
), &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3360 static int nfs4_proc_readlink(struct inode
*inode
, struct page
*page
,
3361 unsigned int pgbase
, unsigned int pglen
)
3363 struct nfs4_exception exception
= { };
3366 err
= _nfs4_proc_readlink(inode
, page
, pgbase
, pglen
);
3367 trace_nfs4_readlink(inode
, err
);
3368 err
= nfs4_handle_exception(NFS_SERVER(inode
), err
,
3370 } while (exception
.retry
);
3375 * This is just for mknod. open(O_CREAT) will always do ->open_context().
3378 nfs4_proc_create(struct inode
*dir
, struct dentry
*dentry
, struct iattr
*sattr
,
3381 struct nfs4_label l
, *ilabel
= NULL
;
3382 struct nfs_open_context
*ctx
;
3383 struct nfs4_state
*state
;
3387 ctx
= alloc_nfs_open_context(dentry
, FMODE_READ
);
3389 return PTR_ERR(ctx
);
3391 ilabel
= nfs4_label_init_security(dir
, dentry
, sattr
, &l
);
3393 sattr
->ia_mode
&= ~current_umask();
3394 state
= nfs4_do_open(dir
, ctx
, flags
, sattr
, ilabel
, &opened
);
3395 if (IS_ERR(state
)) {
3396 status
= PTR_ERR(state
);
3400 nfs4_label_release_security(ilabel
);
3401 put_nfs_open_context(ctx
);
3405 static int _nfs4_proc_remove(struct inode
*dir
, struct qstr
*name
)
3407 struct nfs_server
*server
= NFS_SERVER(dir
);
3408 struct nfs_removeargs args
= {
3412 struct nfs_removeres res
= {
3415 struct rpc_message msg
= {
3416 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_REMOVE
],
3422 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 1);
3424 update_changeattr(dir
, &res
.cinfo
);
3428 static int nfs4_proc_remove(struct inode
*dir
, struct qstr
*name
)
3430 struct nfs4_exception exception
= { };
3433 err
= _nfs4_proc_remove(dir
, name
);
3434 trace_nfs4_remove(dir
, name
, err
);
3435 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
3437 } while (exception
.retry
);
3441 static void nfs4_proc_unlink_setup(struct rpc_message
*msg
, struct inode
*dir
)
3443 struct nfs_server
*server
= NFS_SERVER(dir
);
3444 struct nfs_removeargs
*args
= msg
->rpc_argp
;
3445 struct nfs_removeres
*res
= msg
->rpc_resp
;
3447 res
->server
= server
;
3448 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_REMOVE
];
3449 nfs4_init_sequence(&args
->seq_args
, &res
->seq_res
, 1);
3451 nfs_fattr_init(res
->dir_attr
);
3454 static void nfs4_proc_unlink_rpc_prepare(struct rpc_task
*task
, struct nfs_unlinkdata
*data
)
3456 nfs4_setup_sequence(NFS_SERVER(data
->dir
),
3457 &data
->args
.seq_args
,
3462 static int nfs4_proc_unlink_done(struct rpc_task
*task
, struct inode
*dir
)
3464 struct nfs_unlinkdata
*data
= task
->tk_calldata
;
3465 struct nfs_removeres
*res
= &data
->res
;
3467 if (!nfs4_sequence_done(task
, &res
->seq_res
))
3469 if (nfs4_async_handle_error(task
, res
->server
, NULL
) == -EAGAIN
)
3471 update_changeattr(dir
, &res
->cinfo
);
3475 static void nfs4_proc_rename_setup(struct rpc_message
*msg
, struct inode
*dir
)
3477 struct nfs_server
*server
= NFS_SERVER(dir
);
3478 struct nfs_renameargs
*arg
= msg
->rpc_argp
;
3479 struct nfs_renameres
*res
= msg
->rpc_resp
;
3481 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENAME
];
3482 res
->server
= server
;
3483 nfs4_init_sequence(&arg
->seq_args
, &res
->seq_res
, 1);
3486 static void nfs4_proc_rename_rpc_prepare(struct rpc_task
*task
, struct nfs_renamedata
*data
)
3488 nfs4_setup_sequence(NFS_SERVER(data
->old_dir
),
3489 &data
->args
.seq_args
,
3494 static int nfs4_proc_rename_done(struct rpc_task
*task
, struct inode
*old_dir
,
3495 struct inode
*new_dir
)
3497 struct nfs_renamedata
*data
= task
->tk_calldata
;
3498 struct nfs_renameres
*res
= &data
->res
;
3500 if (!nfs4_sequence_done(task
, &res
->seq_res
))
3502 if (nfs4_async_handle_error(task
, res
->server
, NULL
) == -EAGAIN
)
3505 update_changeattr(old_dir
, &res
->old_cinfo
);
3506 update_changeattr(new_dir
, &res
->new_cinfo
);
3510 static int _nfs4_proc_rename(struct inode
*old_dir
, struct qstr
*old_name
,
3511 struct inode
*new_dir
, struct qstr
*new_name
)
3513 struct nfs_server
*server
= NFS_SERVER(old_dir
);
3514 struct nfs_renameargs arg
= {
3515 .old_dir
= NFS_FH(old_dir
),
3516 .new_dir
= NFS_FH(new_dir
),
3517 .old_name
= old_name
,
3518 .new_name
= new_name
,
3520 struct nfs_renameres res
= {
3523 struct rpc_message msg
= {
3524 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENAME
],
3528 int status
= -ENOMEM
;
3530 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
3532 update_changeattr(old_dir
, &res
.old_cinfo
);
3533 update_changeattr(new_dir
, &res
.new_cinfo
);
3538 static int nfs4_proc_rename(struct inode
*old_dir
, struct qstr
*old_name
,
3539 struct inode
*new_dir
, struct qstr
*new_name
)
3541 struct nfs4_exception exception
= { };
3544 err
= _nfs4_proc_rename(old_dir
, old_name
,
3546 trace_nfs4_rename(old_dir
, old_name
, new_dir
, new_name
, err
);
3547 err
= nfs4_handle_exception(NFS_SERVER(old_dir
), err
,
3549 } while (exception
.retry
);
3553 static int _nfs4_proc_link(struct inode
*inode
, struct inode
*dir
, struct qstr
*name
)
3555 struct nfs_server
*server
= NFS_SERVER(inode
);
3556 struct nfs4_link_arg arg
= {
3557 .fh
= NFS_FH(inode
),
3558 .dir_fh
= NFS_FH(dir
),
3560 .bitmask
= server
->attr_bitmask
,
3562 struct nfs4_link_res res
= {
3566 struct rpc_message msg
= {
3567 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LINK
],
3571 int status
= -ENOMEM
;
3573 res
.fattr
= nfs_alloc_fattr();
3574 if (res
.fattr
== NULL
)
3577 res
.label
= nfs4_label_alloc(server
, GFP_KERNEL
);
3578 if (IS_ERR(res
.label
)) {
3579 status
= PTR_ERR(res
.label
);
3582 arg
.bitmask
= nfs4_bitmask(server
, res
.label
);
3584 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
3586 update_changeattr(dir
, &res
.cinfo
);
3587 status
= nfs_post_op_update_inode(inode
, res
.fattr
);
3589 nfs_setsecurity(inode
, res
.fattr
, res
.label
);
3593 nfs4_label_free(res
.label
);
3596 nfs_free_fattr(res
.fattr
);
3600 static int nfs4_proc_link(struct inode
*inode
, struct inode
*dir
, struct qstr
*name
)
3602 struct nfs4_exception exception
= { };
3605 err
= nfs4_handle_exception(NFS_SERVER(inode
),
3606 _nfs4_proc_link(inode
, dir
, name
),
3608 } while (exception
.retry
);
3612 struct nfs4_createdata
{
3613 struct rpc_message msg
;
3614 struct nfs4_create_arg arg
;
3615 struct nfs4_create_res res
;
3617 struct nfs_fattr fattr
;
3618 struct nfs4_label
*label
;
3621 static struct nfs4_createdata
*nfs4_alloc_createdata(struct inode
*dir
,
3622 struct qstr
*name
, struct iattr
*sattr
, u32 ftype
)
3624 struct nfs4_createdata
*data
;
3626 data
= kzalloc(sizeof(*data
), GFP_KERNEL
);
3628 struct nfs_server
*server
= NFS_SERVER(dir
);
3630 data
->label
= nfs4_label_alloc(server
, GFP_KERNEL
);
3631 if (IS_ERR(data
->label
))
3634 data
->msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CREATE
];
3635 data
->msg
.rpc_argp
= &data
->arg
;
3636 data
->msg
.rpc_resp
= &data
->res
;
3637 data
->arg
.dir_fh
= NFS_FH(dir
);
3638 data
->arg
.server
= server
;
3639 data
->arg
.name
= name
;
3640 data
->arg
.attrs
= sattr
;
3641 data
->arg
.ftype
= ftype
;
3642 data
->arg
.bitmask
= nfs4_bitmask(server
, data
->label
);
3643 data
->res
.server
= server
;
3644 data
->res
.fh
= &data
->fh
;
3645 data
->res
.fattr
= &data
->fattr
;
3646 data
->res
.label
= data
->label
;
3647 nfs_fattr_init(data
->res
.fattr
);
3655 static int nfs4_do_create(struct inode
*dir
, struct dentry
*dentry
, struct nfs4_createdata
*data
)
3657 int status
= nfs4_call_sync(NFS_SERVER(dir
)->client
, NFS_SERVER(dir
), &data
->msg
,
3658 &data
->arg
.seq_args
, &data
->res
.seq_res
, 1);
3660 update_changeattr(dir
, &data
->res
.dir_cinfo
);
3661 status
= nfs_instantiate(dentry
, data
->res
.fh
, data
->res
.fattr
, data
->res
.label
);
3666 static void nfs4_free_createdata(struct nfs4_createdata
*data
)
3668 nfs4_label_free(data
->label
);
3672 static int _nfs4_proc_symlink(struct inode
*dir
, struct dentry
*dentry
,
3673 struct page
*page
, unsigned int len
, struct iattr
*sattr
,
3674 struct nfs4_label
*label
)
3676 struct nfs4_createdata
*data
;
3677 int status
= -ENAMETOOLONG
;
3679 if (len
> NFS4_MAXPATHLEN
)
3683 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4LNK
);
3687 data
->msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SYMLINK
];
3688 data
->arg
.u
.symlink
.pages
= &page
;
3689 data
->arg
.u
.symlink
.len
= len
;
3690 data
->arg
.label
= label
;
3692 status
= nfs4_do_create(dir
, dentry
, data
);
3694 nfs4_free_createdata(data
);
3699 static int nfs4_proc_symlink(struct inode
*dir
, struct dentry
*dentry
,
3700 struct page
*page
, unsigned int len
, struct iattr
*sattr
)
3702 struct nfs4_exception exception
= { };
3703 struct nfs4_label l
, *label
= NULL
;
3706 label
= nfs4_label_init_security(dir
, dentry
, sattr
, &l
);
3709 err
= _nfs4_proc_symlink(dir
, dentry
, page
, len
, sattr
, label
);
3710 trace_nfs4_symlink(dir
, &dentry
->d_name
, err
);
3711 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
3713 } while (exception
.retry
);
3715 nfs4_label_release_security(label
);
3719 static int _nfs4_proc_mkdir(struct inode
*dir
, struct dentry
*dentry
,
3720 struct iattr
*sattr
, struct nfs4_label
*label
)
3722 struct nfs4_createdata
*data
;
3723 int status
= -ENOMEM
;
3725 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4DIR
);
3729 data
->arg
.label
= label
;
3730 status
= nfs4_do_create(dir
, dentry
, data
);
3732 nfs4_free_createdata(data
);
3737 static int nfs4_proc_mkdir(struct inode
*dir
, struct dentry
*dentry
,
3738 struct iattr
*sattr
)
3740 struct nfs4_exception exception
= { };
3741 struct nfs4_label l
, *label
= NULL
;
3744 label
= nfs4_label_init_security(dir
, dentry
, sattr
, &l
);
3746 sattr
->ia_mode
&= ~current_umask();
3748 err
= _nfs4_proc_mkdir(dir
, dentry
, sattr
, label
);
3749 trace_nfs4_mkdir(dir
, &dentry
->d_name
, err
);
3750 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
3752 } while (exception
.retry
);
3753 nfs4_label_release_security(label
);
3758 static int _nfs4_proc_readdir(struct dentry
*dentry
, struct rpc_cred
*cred
,
3759 u64 cookie
, struct page
**pages
, unsigned int count
, int plus
)
3761 struct inode
*dir
= dentry
->d_inode
;
3762 struct nfs4_readdir_arg args
= {
3767 .bitmask
= NFS_SERVER(dentry
->d_inode
)->attr_bitmask
,
3770 struct nfs4_readdir_res res
;
3771 struct rpc_message msg
= {
3772 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READDIR
],
3779 dprintk("%s: dentry = %pd2, cookie = %Lu\n", __func__
,
3781 (unsigned long long)cookie
);
3782 nfs4_setup_readdir(cookie
, NFS_I(dir
)->cookieverf
, dentry
, &args
);
3783 res
.pgbase
= args
.pgbase
;
3784 status
= nfs4_call_sync(NFS_SERVER(dir
)->client
, NFS_SERVER(dir
), &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3786 memcpy(NFS_I(dir
)->cookieverf
, res
.verifier
.data
, NFS4_VERIFIER_SIZE
);
3787 status
+= args
.pgbase
;
3790 nfs_invalidate_atime(dir
);
3792 dprintk("%s: returns %d\n", __func__
, status
);
3796 static int nfs4_proc_readdir(struct dentry
*dentry
, struct rpc_cred
*cred
,
3797 u64 cookie
, struct page
**pages
, unsigned int count
, int plus
)
3799 struct nfs4_exception exception
= { };
3802 err
= _nfs4_proc_readdir(dentry
, cred
, cookie
,
3803 pages
, count
, plus
);
3804 trace_nfs4_readdir(dentry
->d_inode
, err
);
3805 err
= nfs4_handle_exception(NFS_SERVER(dentry
->d_inode
), err
,
3807 } while (exception
.retry
);
3811 static int _nfs4_proc_mknod(struct inode
*dir
, struct dentry
*dentry
,
3812 struct iattr
*sattr
, struct nfs4_label
*label
, dev_t rdev
)
3814 struct nfs4_createdata
*data
;
3815 int mode
= sattr
->ia_mode
;
3816 int status
= -ENOMEM
;
3818 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4SOCK
);
3823 data
->arg
.ftype
= NF4FIFO
;
3824 else if (S_ISBLK(mode
)) {
3825 data
->arg
.ftype
= NF4BLK
;
3826 data
->arg
.u
.device
.specdata1
= MAJOR(rdev
);
3827 data
->arg
.u
.device
.specdata2
= MINOR(rdev
);
3829 else if (S_ISCHR(mode
)) {
3830 data
->arg
.ftype
= NF4CHR
;
3831 data
->arg
.u
.device
.specdata1
= MAJOR(rdev
);
3832 data
->arg
.u
.device
.specdata2
= MINOR(rdev
);
3833 } else if (!S_ISSOCK(mode
)) {
3838 data
->arg
.label
= label
;
3839 status
= nfs4_do_create(dir
, dentry
, data
);
3841 nfs4_free_createdata(data
);
3846 static int nfs4_proc_mknod(struct inode
*dir
, struct dentry
*dentry
,
3847 struct iattr
*sattr
, dev_t rdev
)
3849 struct nfs4_exception exception
= { };
3850 struct nfs4_label l
, *label
= NULL
;
3853 label
= nfs4_label_init_security(dir
, dentry
, sattr
, &l
);
3855 sattr
->ia_mode
&= ~current_umask();
3857 err
= _nfs4_proc_mknod(dir
, dentry
, sattr
, label
, rdev
);
3858 trace_nfs4_mknod(dir
, &dentry
->d_name
, err
);
3859 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
3861 } while (exception
.retry
);
3863 nfs4_label_release_security(label
);
3868 static int _nfs4_proc_statfs(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3869 struct nfs_fsstat
*fsstat
)
3871 struct nfs4_statfs_arg args
= {
3873 .bitmask
= server
->attr_bitmask
,
3875 struct nfs4_statfs_res res
= {
3878 struct rpc_message msg
= {
3879 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_STATFS
],
3884 nfs_fattr_init(fsstat
->fattr
);
3885 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3888 static int nfs4_proc_statfs(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsstat
*fsstat
)
3890 struct nfs4_exception exception
= { };
3893 err
= nfs4_handle_exception(server
,
3894 _nfs4_proc_statfs(server
, fhandle
, fsstat
),
3896 } while (exception
.retry
);
3900 static int _nfs4_do_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3901 struct nfs_fsinfo
*fsinfo
)
3903 struct nfs4_fsinfo_arg args
= {
3905 .bitmask
= server
->attr_bitmask
,
3907 struct nfs4_fsinfo_res res
= {
3910 struct rpc_message msg
= {
3911 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FSINFO
],
3916 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3919 static int nfs4_do_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsinfo
*fsinfo
)
3921 struct nfs4_exception exception
= { };
3922 unsigned long now
= jiffies
;
3926 err
= _nfs4_do_fsinfo(server
, fhandle
, fsinfo
);
3927 trace_nfs4_fsinfo(server
, fhandle
, fsinfo
->fattr
, err
);
3929 struct nfs_client
*clp
= server
->nfs_client
;
3931 spin_lock(&clp
->cl_lock
);
3932 clp
->cl_lease_time
= fsinfo
->lease_time
* HZ
;
3933 clp
->cl_last_renewal
= now
;
3934 spin_unlock(&clp
->cl_lock
);
3937 err
= nfs4_handle_exception(server
, err
, &exception
);
3938 } while (exception
.retry
);
3942 static int nfs4_proc_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsinfo
*fsinfo
)
3946 nfs_fattr_init(fsinfo
->fattr
);
3947 error
= nfs4_do_fsinfo(server
, fhandle
, fsinfo
);
3949 /* block layout checks this! */
3950 server
->pnfs_blksize
= fsinfo
->blksize
;
3951 set_pnfs_layoutdriver(server
, fhandle
, fsinfo
->layouttype
);
3957 static int _nfs4_proc_pathconf(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3958 struct nfs_pathconf
*pathconf
)
3960 struct nfs4_pathconf_arg args
= {
3962 .bitmask
= server
->attr_bitmask
,
3964 struct nfs4_pathconf_res res
= {
3965 .pathconf
= pathconf
,
3967 struct rpc_message msg
= {
3968 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_PATHCONF
],
3973 /* None of the pathconf attributes are mandatory to implement */
3974 if ((args
.bitmask
[0] & nfs4_pathconf_bitmap
[0]) == 0) {
3975 memset(pathconf
, 0, sizeof(*pathconf
));
3979 nfs_fattr_init(pathconf
->fattr
);
3980 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3983 static int nfs4_proc_pathconf(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3984 struct nfs_pathconf
*pathconf
)
3986 struct nfs4_exception exception
= { };
3990 err
= nfs4_handle_exception(server
,
3991 _nfs4_proc_pathconf(server
, fhandle
, pathconf
),
3993 } while (exception
.retry
);
3997 int nfs4_set_rw_stateid(nfs4_stateid
*stateid
,
3998 const struct nfs_open_context
*ctx
,
3999 const struct nfs_lock_context
*l_ctx
,
4002 const struct nfs_lockowner
*lockowner
= NULL
;
4005 lockowner
= &l_ctx
->lockowner
;
4006 return nfs4_select_rw_stateid(stateid
, ctx
->state
, fmode
, lockowner
);
4008 EXPORT_SYMBOL_GPL(nfs4_set_rw_stateid
);
4010 static bool nfs4_stateid_is_current(nfs4_stateid
*stateid
,
4011 const struct nfs_open_context
*ctx
,
4012 const struct nfs_lock_context
*l_ctx
,
4015 nfs4_stateid current_stateid
;
4017 /* If the current stateid represents a lost lock, then exit */
4018 if (nfs4_set_rw_stateid(¤t_stateid
, ctx
, l_ctx
, fmode
) == -EIO
)
4020 return nfs4_stateid_match(stateid
, ¤t_stateid
);
4023 static bool nfs4_error_stateid_expired(int err
)
4026 case -NFS4ERR_DELEG_REVOKED
:
4027 case -NFS4ERR_ADMIN_REVOKED
:
4028 case -NFS4ERR_BAD_STATEID
:
4029 case -NFS4ERR_STALE_STATEID
:
4030 case -NFS4ERR_OLD_STATEID
:
4031 case -NFS4ERR_OPENMODE
:
4032 case -NFS4ERR_EXPIRED
:
4038 void __nfs4_read_done_cb(struct nfs_read_data
*data
)
4040 nfs_invalidate_atime(data
->header
->inode
);
4043 static int nfs4_read_done_cb(struct rpc_task
*task
, struct nfs_read_data
*data
)
4045 struct nfs_server
*server
= NFS_SERVER(data
->header
->inode
);
4047 trace_nfs4_read(data
, task
->tk_status
);
4048 if (nfs4_async_handle_error(task
, server
, data
->args
.context
->state
) == -EAGAIN
) {
4049 rpc_restart_call_prepare(task
);
4053 __nfs4_read_done_cb(data
);
4054 if (task
->tk_status
> 0)
4055 renew_lease(server
, data
->timestamp
);
4059 static bool nfs4_read_stateid_changed(struct rpc_task
*task
,
4060 struct nfs_readargs
*args
)
4063 if (!nfs4_error_stateid_expired(task
->tk_status
) ||
4064 nfs4_stateid_is_current(&args
->stateid
,
4069 rpc_restart_call_prepare(task
);
4073 static int nfs4_read_done(struct rpc_task
*task
, struct nfs_read_data
*data
)
4076 dprintk("--> %s\n", __func__
);
4078 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
4080 if (nfs4_read_stateid_changed(task
, &data
->args
))
4082 return data
->read_done_cb
? data
->read_done_cb(task
, data
) :
4083 nfs4_read_done_cb(task
, data
);
4086 static void nfs4_proc_read_setup(struct nfs_read_data
*data
, struct rpc_message
*msg
)
4088 data
->timestamp
= jiffies
;
4089 data
->read_done_cb
= nfs4_read_done_cb
;
4090 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READ
];
4091 nfs4_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 0);
4094 static int nfs4_proc_read_rpc_prepare(struct rpc_task
*task
, struct nfs_read_data
*data
)
4096 if (nfs4_setup_sequence(NFS_SERVER(data
->header
->inode
),
4097 &data
->args
.seq_args
,
4101 if (nfs4_set_rw_stateid(&data
->args
.stateid
, data
->args
.context
,
4102 data
->args
.lock_context
, FMODE_READ
) == -EIO
)
4104 if (unlikely(test_bit(NFS_CONTEXT_BAD
, &data
->args
.context
->flags
)))
4109 static int nfs4_write_done_cb(struct rpc_task
*task
, struct nfs_write_data
*data
)
4111 struct inode
*inode
= data
->header
->inode
;
4113 trace_nfs4_write(data
, task
->tk_status
);
4114 if (nfs4_async_handle_error(task
, NFS_SERVER(inode
), data
->args
.context
->state
) == -EAGAIN
) {
4115 rpc_restart_call_prepare(task
);
4118 if (task
->tk_status
>= 0) {
4119 renew_lease(NFS_SERVER(inode
), data
->timestamp
);
4120 nfs_post_op_update_inode_force_wcc(inode
, &data
->fattr
);
4125 static bool nfs4_write_stateid_changed(struct rpc_task
*task
,
4126 struct nfs_writeargs
*args
)
4129 if (!nfs4_error_stateid_expired(task
->tk_status
) ||
4130 nfs4_stateid_is_current(&args
->stateid
,
4135 rpc_restart_call_prepare(task
);
4139 static int nfs4_write_done(struct rpc_task
*task
, struct nfs_write_data
*data
)
4141 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
4143 if (nfs4_write_stateid_changed(task
, &data
->args
))
4145 return data
->write_done_cb
? data
->write_done_cb(task
, data
) :
4146 nfs4_write_done_cb(task
, data
);
4150 bool nfs4_write_need_cache_consistency_data(const struct nfs_write_data
*data
)
4152 const struct nfs_pgio_header
*hdr
= data
->header
;
4154 /* Don't request attributes for pNFS or O_DIRECT writes */
4155 if (data
->ds_clp
!= NULL
|| hdr
->dreq
!= NULL
)
4157 /* Otherwise, request attributes if and only if we don't hold
4160 return nfs4_have_delegation(hdr
->inode
, FMODE_READ
) == 0;
4163 static void nfs4_proc_write_setup(struct nfs_write_data
*data
, struct rpc_message
*msg
)
4165 struct nfs_server
*server
= NFS_SERVER(data
->header
->inode
);
4167 if (!nfs4_write_need_cache_consistency_data(data
)) {
4168 data
->args
.bitmask
= NULL
;
4169 data
->res
.fattr
= NULL
;
4171 data
->args
.bitmask
= server
->cache_consistency_bitmask
;
4173 if (!data
->write_done_cb
)
4174 data
->write_done_cb
= nfs4_write_done_cb
;
4175 data
->res
.server
= server
;
4176 data
->timestamp
= jiffies
;
4178 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_WRITE
];
4179 nfs4_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
4182 static int nfs4_proc_write_rpc_prepare(struct rpc_task
*task
, struct nfs_write_data
*data
)
4184 if (nfs4_setup_sequence(NFS_SERVER(data
->header
->inode
),
4185 &data
->args
.seq_args
,
4189 if (nfs4_set_rw_stateid(&data
->args
.stateid
, data
->args
.context
,
4190 data
->args
.lock_context
, FMODE_WRITE
) == -EIO
)
4192 if (unlikely(test_bit(NFS_CONTEXT_BAD
, &data
->args
.context
->flags
)))
4197 static void nfs4_proc_commit_rpc_prepare(struct rpc_task
*task
, struct nfs_commit_data
*data
)
4199 nfs4_setup_sequence(NFS_SERVER(data
->inode
),
4200 &data
->args
.seq_args
,
4205 static int nfs4_commit_done_cb(struct rpc_task
*task
, struct nfs_commit_data
*data
)
4207 struct inode
*inode
= data
->inode
;
4209 trace_nfs4_commit(data
, task
->tk_status
);
4210 if (nfs4_async_handle_error(task
, NFS_SERVER(inode
), NULL
) == -EAGAIN
) {
4211 rpc_restart_call_prepare(task
);
4217 static int nfs4_commit_done(struct rpc_task
*task
, struct nfs_commit_data
*data
)
4219 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
4221 return data
->commit_done_cb(task
, data
);
4224 static void nfs4_proc_commit_setup(struct nfs_commit_data
*data
, struct rpc_message
*msg
)
4226 struct nfs_server
*server
= NFS_SERVER(data
->inode
);
4228 if (data
->commit_done_cb
== NULL
)
4229 data
->commit_done_cb
= nfs4_commit_done_cb
;
4230 data
->res
.server
= server
;
4231 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_COMMIT
];
4232 nfs4_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
4235 struct nfs4_renewdata
{
4236 struct nfs_client
*client
;
4237 unsigned long timestamp
;
4241 * nfs4_proc_async_renew(): This is not one of the nfs_rpc_ops; it is a special
4242 * standalone procedure for queueing an asynchronous RENEW.
4244 static void nfs4_renew_release(void *calldata
)
4246 struct nfs4_renewdata
*data
= calldata
;
4247 struct nfs_client
*clp
= data
->client
;
4249 if (atomic_read(&clp
->cl_count
) > 1)
4250 nfs4_schedule_state_renewal(clp
);
4251 nfs_put_client(clp
);
4255 static void nfs4_renew_done(struct rpc_task
*task
, void *calldata
)
4257 struct nfs4_renewdata
*data
= calldata
;
4258 struct nfs_client
*clp
= data
->client
;
4259 unsigned long timestamp
= data
->timestamp
;
4261 trace_nfs4_renew_async(clp
, task
->tk_status
);
4262 switch (task
->tk_status
) {
4265 case -NFS4ERR_LEASE_MOVED
:
4266 nfs4_schedule_lease_moved_recovery(clp
);
4269 /* Unless we're shutting down, schedule state recovery! */
4270 if (test_bit(NFS_CS_RENEWD
, &clp
->cl_res_state
) == 0)
4272 if (task
->tk_status
!= NFS4ERR_CB_PATH_DOWN
) {
4273 nfs4_schedule_lease_recovery(clp
);
4276 nfs4_schedule_path_down_recovery(clp
);
4278 do_renew_lease(clp
, timestamp
);
4281 static const struct rpc_call_ops nfs4_renew_ops
= {
4282 .rpc_call_done
= nfs4_renew_done
,
4283 .rpc_release
= nfs4_renew_release
,
4286 static int nfs4_proc_async_renew(struct nfs_client
*clp
, struct rpc_cred
*cred
, unsigned renew_flags
)
4288 struct rpc_message msg
= {
4289 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENEW
],
4293 struct nfs4_renewdata
*data
;
4295 if (renew_flags
== 0)
4297 if (!atomic_inc_not_zero(&clp
->cl_count
))
4299 data
= kmalloc(sizeof(*data
), GFP_NOFS
);
4303 data
->timestamp
= jiffies
;
4304 return rpc_call_async(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
,
4305 &nfs4_renew_ops
, data
);
4308 static int nfs4_proc_renew(struct nfs_client
*clp
, struct rpc_cred
*cred
)
4310 struct rpc_message msg
= {
4311 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENEW
],
4315 unsigned long now
= jiffies
;
4318 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
4321 do_renew_lease(clp
, now
);
4325 static inline int nfs4_server_supports_acls(struct nfs_server
*server
)
4327 return server
->caps
& NFS_CAP_ACLS
;
4330 /* Assuming that XATTR_SIZE_MAX is a multiple of PAGE_SIZE, and that
4331 * it's OK to put sizeof(void) * (XATTR_SIZE_MAX/PAGE_SIZE) bytes on
4334 #define NFS4ACL_MAXPAGES DIV_ROUND_UP(XATTR_SIZE_MAX, PAGE_SIZE)
4336 static int buf_to_pages_noslab(const void *buf
, size_t buflen
,
4337 struct page
**pages
, unsigned int *pgbase
)
4339 struct page
*newpage
, **spages
;
4345 len
= min_t(size_t, PAGE_SIZE
, buflen
);
4346 newpage
= alloc_page(GFP_KERNEL
);
4348 if (newpage
== NULL
)
4350 memcpy(page_address(newpage
), buf
, len
);
4355 } while (buflen
!= 0);
4361 __free_page(spages
[rc
-1]);
4365 struct nfs4_cached_acl
{
4371 static void nfs4_set_cached_acl(struct inode
*inode
, struct nfs4_cached_acl
*acl
)
4373 struct nfs_inode
*nfsi
= NFS_I(inode
);
4375 spin_lock(&inode
->i_lock
);
4376 kfree(nfsi
->nfs4_acl
);
4377 nfsi
->nfs4_acl
= acl
;
4378 spin_unlock(&inode
->i_lock
);
4381 static void nfs4_zap_acl_attr(struct inode
*inode
)
4383 nfs4_set_cached_acl(inode
, NULL
);
4386 static inline ssize_t
nfs4_read_cached_acl(struct inode
*inode
, char *buf
, size_t buflen
)
4388 struct nfs_inode
*nfsi
= NFS_I(inode
);
4389 struct nfs4_cached_acl
*acl
;
4392 spin_lock(&inode
->i_lock
);
4393 acl
= nfsi
->nfs4_acl
;
4396 if (buf
== NULL
) /* user is just asking for length */
4398 if (acl
->cached
== 0)
4400 ret
= -ERANGE
; /* see getxattr(2) man page */
4401 if (acl
->len
> buflen
)
4403 memcpy(buf
, acl
->data
, acl
->len
);
4407 spin_unlock(&inode
->i_lock
);
4411 static void nfs4_write_cached_acl(struct inode
*inode
, struct page
**pages
, size_t pgbase
, size_t acl_len
)
4413 struct nfs4_cached_acl
*acl
;
4414 size_t buflen
= sizeof(*acl
) + acl_len
;
4416 if (buflen
<= PAGE_SIZE
) {
4417 acl
= kmalloc(buflen
, GFP_KERNEL
);
4421 _copy_from_pages(acl
->data
, pages
, pgbase
, acl_len
);
4423 acl
= kmalloc(sizeof(*acl
), GFP_KERNEL
);
4430 nfs4_set_cached_acl(inode
, acl
);
4434 * The getxattr API returns the required buffer length when called with a
4435 * NULL buf. The NFSv4 acl tool then calls getxattr again after allocating
4436 * the required buf. On a NULL buf, we send a page of data to the server
4437 * guessing that the ACL request can be serviced by a page. If so, we cache
4438 * up to the page of ACL data, and the 2nd call to getxattr is serviced by
4439 * the cache. If not so, we throw away the page, and cache the required
4440 * length. The next getxattr call will then produce another round trip to
4441 * the server, this time with the input buf of the required size.
4443 static ssize_t
__nfs4_get_acl_uncached(struct inode
*inode
, void *buf
, size_t buflen
)
4445 struct page
*pages
[NFS4ACL_MAXPAGES
] = {NULL
, };
4446 struct nfs_getaclargs args
= {
4447 .fh
= NFS_FH(inode
),
4451 struct nfs_getaclres res
= {
4454 struct rpc_message msg
= {
4455 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETACL
],
4459 unsigned int npages
= DIV_ROUND_UP(buflen
, PAGE_SIZE
);
4460 int ret
= -ENOMEM
, i
;
4462 /* As long as we're doing a round trip to the server anyway,
4463 * let's be prepared for a page of acl data. */
4466 if (npages
> ARRAY_SIZE(pages
))
4469 for (i
= 0; i
< npages
; i
++) {
4470 pages
[i
] = alloc_page(GFP_KERNEL
);
4475 /* for decoding across pages */
4476 res
.acl_scratch
= alloc_page(GFP_KERNEL
);
4477 if (!res
.acl_scratch
)
4480 args
.acl_len
= npages
* PAGE_SIZE
;
4481 args
.acl_pgbase
= 0;
4483 dprintk("%s buf %p buflen %zu npages %d args.acl_len %zu\n",
4484 __func__
, buf
, buflen
, npages
, args
.acl_len
);
4485 ret
= nfs4_call_sync(NFS_SERVER(inode
)->client
, NFS_SERVER(inode
),
4486 &msg
, &args
.seq_args
, &res
.seq_res
, 0);
4490 /* Handle the case where the passed-in buffer is too short */
4491 if (res
.acl_flags
& NFS4_ACL_TRUNC
) {
4492 /* Did the user only issue a request for the acl length? */
4498 nfs4_write_cached_acl(inode
, pages
, res
.acl_data_offset
, res
.acl_len
);
4500 if (res
.acl_len
> buflen
) {
4504 _copy_from_pages(buf
, pages
, res
.acl_data_offset
, res
.acl_len
);
4509 for (i
= 0; i
< npages
; i
++)
4511 __free_page(pages
[i
]);
4512 if (res
.acl_scratch
)
4513 __free_page(res
.acl_scratch
);
4517 static ssize_t
nfs4_get_acl_uncached(struct inode
*inode
, void *buf
, size_t buflen
)
4519 struct nfs4_exception exception
= { };
4522 ret
= __nfs4_get_acl_uncached(inode
, buf
, buflen
);
4523 trace_nfs4_get_acl(inode
, ret
);
4526 ret
= nfs4_handle_exception(NFS_SERVER(inode
), ret
, &exception
);
4527 } while (exception
.retry
);
4531 static ssize_t
nfs4_proc_get_acl(struct inode
*inode
, void *buf
, size_t buflen
)
4533 struct nfs_server
*server
= NFS_SERVER(inode
);
4536 if (!nfs4_server_supports_acls(server
))
4538 ret
= nfs_revalidate_inode(server
, inode
);
4541 if (NFS_I(inode
)->cache_validity
& NFS_INO_INVALID_ACL
)
4542 nfs_zap_acl_cache(inode
);
4543 ret
= nfs4_read_cached_acl(inode
, buf
, buflen
);
4545 /* -ENOENT is returned if there is no ACL or if there is an ACL
4546 * but no cached acl data, just the acl length */
4548 return nfs4_get_acl_uncached(inode
, buf
, buflen
);
4551 static int __nfs4_proc_set_acl(struct inode
*inode
, const void *buf
, size_t buflen
)
4553 struct nfs_server
*server
= NFS_SERVER(inode
);
4554 struct page
*pages
[NFS4ACL_MAXPAGES
];
4555 struct nfs_setaclargs arg
= {
4556 .fh
= NFS_FH(inode
),
4560 struct nfs_setaclres res
;
4561 struct rpc_message msg
= {
4562 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETACL
],
4566 unsigned int npages
= DIV_ROUND_UP(buflen
, PAGE_SIZE
);
4569 if (!nfs4_server_supports_acls(server
))
4571 if (npages
> ARRAY_SIZE(pages
))
4573 i
= buf_to_pages_noslab(buf
, buflen
, arg
.acl_pages
, &arg
.acl_pgbase
);
4576 nfs4_inode_return_delegation(inode
);
4577 ret
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
4580 * Free each page after tx, so the only ref left is
4581 * held by the network stack
4584 put_page(pages
[i
-1]);
4587 * Acl update can result in inode attribute update.
4588 * so mark the attribute cache invalid.
4590 spin_lock(&inode
->i_lock
);
4591 NFS_I(inode
)->cache_validity
|= NFS_INO_INVALID_ATTR
;
4592 spin_unlock(&inode
->i_lock
);
4593 nfs_access_zap_cache(inode
);
4594 nfs_zap_acl_cache(inode
);
4598 static int nfs4_proc_set_acl(struct inode
*inode
, const void *buf
, size_t buflen
)
4600 struct nfs4_exception exception
= { };
4603 err
= __nfs4_proc_set_acl(inode
, buf
, buflen
);
4604 trace_nfs4_set_acl(inode
, err
);
4605 err
= nfs4_handle_exception(NFS_SERVER(inode
), err
,
4607 } while (exception
.retry
);
4611 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
4612 static int _nfs4_get_security_label(struct inode
*inode
, void *buf
,
4615 struct nfs_server
*server
= NFS_SERVER(inode
);
4616 struct nfs_fattr fattr
;
4617 struct nfs4_label label
= {0, 0, buflen
, buf
};
4619 u32 bitmask
[3] = { 0, 0, FATTR4_WORD2_SECURITY_LABEL
};
4620 struct nfs4_getattr_arg arg
= {
4621 .fh
= NFS_FH(inode
),
4624 struct nfs4_getattr_res res
= {
4629 struct rpc_message msg
= {
4630 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETATTR
],
4636 nfs_fattr_init(&fattr
);
4638 ret
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 0);
4641 if (!(fattr
.valid
& NFS_ATTR_FATTR_V4_SECURITY_LABEL
))
4643 if (buflen
< label
.len
)
4648 static int nfs4_get_security_label(struct inode
*inode
, void *buf
,
4651 struct nfs4_exception exception
= { };
4654 if (!nfs_server_capable(inode
, NFS_CAP_SECURITY_LABEL
))
4658 err
= _nfs4_get_security_label(inode
, buf
, buflen
);
4659 trace_nfs4_get_security_label(inode
, err
);
4660 err
= nfs4_handle_exception(NFS_SERVER(inode
), err
,
4662 } while (exception
.retry
);
4666 static int _nfs4_do_set_security_label(struct inode
*inode
,
4667 struct nfs4_label
*ilabel
,
4668 struct nfs_fattr
*fattr
,
4669 struct nfs4_label
*olabel
)
4672 struct iattr sattr
= {0};
4673 struct nfs_server
*server
= NFS_SERVER(inode
);
4674 const u32 bitmask
[3] = { 0, 0, FATTR4_WORD2_SECURITY_LABEL
};
4675 struct nfs_setattrargs arg
= {
4676 .fh
= NFS_FH(inode
),
4682 struct nfs_setattrres res
= {
4687 struct rpc_message msg
= {
4688 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETATTR
],
4694 nfs4_stateid_copy(&arg
.stateid
, &zero_stateid
);
4696 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
4698 dprintk("%s failed: %d\n", __func__
, status
);
4703 static int nfs4_do_set_security_label(struct inode
*inode
,
4704 struct nfs4_label
*ilabel
,
4705 struct nfs_fattr
*fattr
,
4706 struct nfs4_label
*olabel
)
4708 struct nfs4_exception exception
= { };
4712 err
= _nfs4_do_set_security_label(inode
, ilabel
,
4714 trace_nfs4_set_security_label(inode
, err
);
4715 err
= nfs4_handle_exception(NFS_SERVER(inode
), err
,
4717 } while (exception
.retry
);
4722 nfs4_set_security_label(struct dentry
*dentry
, const void *buf
, size_t buflen
)
4724 struct nfs4_label ilabel
, *olabel
= NULL
;
4725 struct nfs_fattr fattr
;
4726 struct rpc_cred
*cred
;
4727 struct inode
*inode
= dentry
->d_inode
;
4730 if (!nfs_server_capable(inode
, NFS_CAP_SECURITY_LABEL
))
4733 nfs_fattr_init(&fattr
);
4737 ilabel
.label
= (char *)buf
;
4738 ilabel
.len
= buflen
;
4740 cred
= rpc_lookup_cred();
4742 return PTR_ERR(cred
);
4744 olabel
= nfs4_label_alloc(NFS_SERVER(inode
), GFP_KERNEL
);
4745 if (IS_ERR(olabel
)) {
4746 status
= -PTR_ERR(olabel
);
4750 status
= nfs4_do_set_security_label(inode
, &ilabel
, &fattr
, olabel
);
4752 nfs_setsecurity(inode
, &fattr
, olabel
);
4754 nfs4_label_free(olabel
);
4759 #endif /* CONFIG_NFS_V4_SECURITY_LABEL */
4763 nfs4_async_handle_error(struct rpc_task
*task
, const struct nfs_server
*server
, struct nfs4_state
*state
)
4765 struct nfs_client
*clp
= server
->nfs_client
;
4767 if (task
->tk_status
>= 0)
4769 switch(task
->tk_status
) {
4770 case -NFS4ERR_DELEG_REVOKED
:
4771 case -NFS4ERR_ADMIN_REVOKED
:
4772 case -NFS4ERR_BAD_STATEID
:
4775 nfs_remove_bad_delegation(state
->inode
);
4776 case -NFS4ERR_OPENMODE
:
4779 if (nfs4_schedule_stateid_recovery(server
, state
) < 0)
4780 goto recovery_failed
;
4781 goto wait_on_recovery
;
4782 case -NFS4ERR_EXPIRED
:
4783 if (state
!= NULL
) {
4784 if (nfs4_schedule_stateid_recovery(server
, state
) < 0)
4785 goto recovery_failed
;
4787 case -NFS4ERR_STALE_STATEID
:
4788 case -NFS4ERR_STALE_CLIENTID
:
4789 nfs4_schedule_lease_recovery(clp
);
4790 goto wait_on_recovery
;
4791 case -NFS4ERR_MOVED
:
4792 if (nfs4_schedule_migration_recovery(server
) < 0)
4793 goto recovery_failed
;
4794 goto wait_on_recovery
;
4795 case -NFS4ERR_LEASE_MOVED
:
4796 nfs4_schedule_lease_moved_recovery(clp
);
4797 goto wait_on_recovery
;
4798 #if defined(CONFIG_NFS_V4_1)
4799 case -NFS4ERR_BADSESSION
:
4800 case -NFS4ERR_BADSLOT
:
4801 case -NFS4ERR_BAD_HIGH_SLOT
:
4802 case -NFS4ERR_DEADSESSION
:
4803 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
4804 case -NFS4ERR_SEQ_FALSE_RETRY
:
4805 case -NFS4ERR_SEQ_MISORDERED
:
4806 dprintk("%s ERROR %d, Reset session\n", __func__
,
4808 nfs4_schedule_session_recovery(clp
->cl_session
, task
->tk_status
);
4809 goto wait_on_recovery
;
4810 #endif /* CONFIG_NFS_V4_1 */
4811 case -NFS4ERR_DELAY
:
4812 nfs_inc_server_stats(server
, NFSIOS_DELAY
);
4813 case -NFS4ERR_GRACE
:
4814 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
4815 case -NFS4ERR_RETRY_UNCACHED_REP
:
4816 case -NFS4ERR_OLD_STATEID
:
4819 task
->tk_status
= nfs4_map_errors(task
->tk_status
);
4822 task
->tk_status
= -EIO
;
4825 rpc_sleep_on(&clp
->cl_rpcwaitq
, task
, NULL
);
4826 if (test_bit(NFS4CLNT_MANAGER_RUNNING
, &clp
->cl_state
) == 0)
4827 rpc_wake_up_queued_task(&clp
->cl_rpcwaitq
, task
);
4828 if (test_bit(NFS_MIG_FAILED
, &server
->mig_status
))
4829 goto recovery_failed
;
4831 task
->tk_status
= 0;
4835 static void nfs4_init_boot_verifier(const struct nfs_client
*clp
,
4836 nfs4_verifier
*bootverf
)
4840 if (test_bit(NFS4CLNT_PURGE_STATE
, &clp
->cl_state
)) {
4841 /* An impossible timestamp guarantees this value
4842 * will never match a generated boot time. */
4844 verf
[1] = cpu_to_be32(NSEC_PER_SEC
+ 1);
4846 struct nfs_net
*nn
= net_generic(clp
->cl_net
, nfs_net_id
);
4847 verf
[0] = cpu_to_be32(nn
->boot_time
.tv_sec
);
4848 verf
[1] = cpu_to_be32(nn
->boot_time
.tv_nsec
);
4850 memcpy(bootverf
->data
, verf
, sizeof(bootverf
->data
));
4854 nfs4_init_nonuniform_client_string(const struct nfs_client
*clp
,
4855 char *buf
, size_t len
)
4857 unsigned int result
;
4860 result
= scnprintf(buf
, len
, "Linux NFSv4.0 %s/%s %s",
4862 rpc_peeraddr2str(clp
->cl_rpcclient
,
4864 rpc_peeraddr2str(clp
->cl_rpcclient
,
4865 RPC_DISPLAY_PROTO
));
4871 nfs4_init_uniform_client_string(const struct nfs_client
*clp
,
4872 char *buf
, size_t len
)
4874 const char *nodename
= clp
->cl_rpcclient
->cl_nodename
;
4876 if (nfs4_client_id_uniquifier
[0] != '\0')
4877 return scnprintf(buf
, len
, "Linux NFSv%u.%u %s/%s",
4878 clp
->rpc_ops
->version
,
4879 clp
->cl_minorversion
,
4880 nfs4_client_id_uniquifier
,
4882 return scnprintf(buf
, len
, "Linux NFSv%u.%u %s",
4883 clp
->rpc_ops
->version
, clp
->cl_minorversion
,
4888 * nfs4_proc_setclientid - Negotiate client ID
4889 * @clp: state data structure
4890 * @program: RPC program for NFSv4 callback service
4891 * @port: IP port number for NFS4 callback service
4892 * @cred: RPC credential to use for this call
4893 * @res: where to place the result
4895 * Returns zero, a negative errno, or a negative NFS4ERR status code.
4897 int nfs4_proc_setclientid(struct nfs_client
*clp
, u32 program
,
4898 unsigned short port
, struct rpc_cred
*cred
,
4899 struct nfs4_setclientid_res
*res
)
4901 nfs4_verifier sc_verifier
;
4902 struct nfs4_setclientid setclientid
= {
4903 .sc_verifier
= &sc_verifier
,
4905 .sc_cb_ident
= clp
->cl_cb_ident
,
4907 struct rpc_message msg
= {
4908 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETCLIENTID
],
4909 .rpc_argp
= &setclientid
,
4915 /* nfs_client_id4 */
4916 nfs4_init_boot_verifier(clp
, &sc_verifier
);
4917 if (test_bit(NFS_CS_MIGRATION
, &clp
->cl_flags
))
4918 setclientid
.sc_name_len
=
4919 nfs4_init_uniform_client_string(clp
,
4920 setclientid
.sc_name
,
4921 sizeof(setclientid
.sc_name
));
4923 setclientid
.sc_name_len
=
4924 nfs4_init_nonuniform_client_string(clp
,
4925 setclientid
.sc_name
,
4926 sizeof(setclientid
.sc_name
));
4929 setclientid
.sc_netid_len
= scnprintf(setclientid
.sc_netid
,
4930 sizeof(setclientid
.sc_netid
), "%s",
4931 rpc_peeraddr2str(clp
->cl_rpcclient
,
4932 RPC_DISPLAY_NETID
));
4934 setclientid
.sc_uaddr_len
= scnprintf(setclientid
.sc_uaddr
,
4935 sizeof(setclientid
.sc_uaddr
), "%s.%u.%u",
4936 clp
->cl_ipaddr
, port
>> 8, port
& 255);
4938 dprintk("NFS call setclientid auth=%s, '%.*s'\n",
4939 clp
->cl_rpcclient
->cl_auth
->au_ops
->au_name
,
4940 setclientid
.sc_name_len
, setclientid
.sc_name
);
4941 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
4942 trace_nfs4_setclientid(clp
, status
);
4943 dprintk("NFS reply setclientid: %d\n", status
);
4948 * nfs4_proc_setclientid_confirm - Confirm client ID
4949 * @clp: state data structure
4950 * @res: result of a previous SETCLIENTID
4951 * @cred: RPC credential to use for this call
4953 * Returns zero, a negative errno, or a negative NFS4ERR status code.
4955 int nfs4_proc_setclientid_confirm(struct nfs_client
*clp
,
4956 struct nfs4_setclientid_res
*arg
,
4957 struct rpc_cred
*cred
)
4959 struct rpc_message msg
= {
4960 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETCLIENTID_CONFIRM
],
4966 dprintk("NFS call setclientid_confirm auth=%s, (client ID %llx)\n",
4967 clp
->cl_rpcclient
->cl_auth
->au_ops
->au_name
,
4969 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
4970 trace_nfs4_setclientid_confirm(clp
, status
);
4971 dprintk("NFS reply setclientid_confirm: %d\n", status
);
4975 struct nfs4_delegreturndata
{
4976 struct nfs4_delegreturnargs args
;
4977 struct nfs4_delegreturnres res
;
4979 nfs4_stateid stateid
;
4980 unsigned long timestamp
;
4981 struct nfs_fattr fattr
;
4985 static void nfs4_delegreturn_done(struct rpc_task
*task
, void *calldata
)
4987 struct nfs4_delegreturndata
*data
= calldata
;
4989 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
4992 trace_nfs4_delegreturn_exit(&data
->args
, &data
->res
, task
->tk_status
);
4993 switch (task
->tk_status
) {
4995 renew_lease(data
->res
.server
, data
->timestamp
);
4997 case -NFS4ERR_ADMIN_REVOKED
:
4998 case -NFS4ERR_DELEG_REVOKED
:
4999 case -NFS4ERR_BAD_STATEID
:
5000 case -NFS4ERR_OLD_STATEID
:
5001 case -NFS4ERR_STALE_STATEID
:
5002 case -NFS4ERR_EXPIRED
:
5003 task
->tk_status
= 0;
5006 if (nfs4_async_handle_error(task
, data
->res
.server
, NULL
) ==
5008 rpc_restart_call_prepare(task
);
5012 data
->rpc_status
= task
->tk_status
;
5015 static void nfs4_delegreturn_release(void *calldata
)
5020 static void nfs4_delegreturn_prepare(struct rpc_task
*task
, void *data
)
5022 struct nfs4_delegreturndata
*d_data
;
5024 d_data
= (struct nfs4_delegreturndata
*)data
;
5026 nfs4_setup_sequence(d_data
->res
.server
,
5027 &d_data
->args
.seq_args
,
5028 &d_data
->res
.seq_res
,
5032 static const struct rpc_call_ops nfs4_delegreturn_ops
= {
5033 .rpc_call_prepare
= nfs4_delegreturn_prepare
,
5034 .rpc_call_done
= nfs4_delegreturn_done
,
5035 .rpc_release
= nfs4_delegreturn_release
,
5038 static int _nfs4_proc_delegreturn(struct inode
*inode
, struct rpc_cred
*cred
, const nfs4_stateid
*stateid
, int issync
)
5040 struct nfs4_delegreturndata
*data
;
5041 struct nfs_server
*server
= NFS_SERVER(inode
);
5042 struct rpc_task
*task
;
5043 struct rpc_message msg
= {
5044 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DELEGRETURN
],
5047 struct rpc_task_setup task_setup_data
= {
5048 .rpc_client
= server
->client
,
5049 .rpc_message
= &msg
,
5050 .callback_ops
= &nfs4_delegreturn_ops
,
5051 .flags
= RPC_TASK_ASYNC
,
5055 data
= kzalloc(sizeof(*data
), GFP_NOFS
);
5058 nfs4_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
5059 data
->args
.fhandle
= &data
->fh
;
5060 data
->args
.stateid
= &data
->stateid
;
5061 data
->args
.bitmask
= server
->cache_consistency_bitmask
;
5062 nfs_copy_fh(&data
->fh
, NFS_FH(inode
));
5063 nfs4_stateid_copy(&data
->stateid
, stateid
);
5064 data
->res
.fattr
= &data
->fattr
;
5065 data
->res
.server
= server
;
5066 nfs_fattr_init(data
->res
.fattr
);
5067 data
->timestamp
= jiffies
;
5068 data
->rpc_status
= 0;
5070 task_setup_data
.callback_data
= data
;
5071 msg
.rpc_argp
= &data
->args
;
5072 msg
.rpc_resp
= &data
->res
;
5073 task
= rpc_run_task(&task_setup_data
);
5075 return PTR_ERR(task
);
5078 status
= nfs4_wait_for_completion_rpc_task(task
);
5081 status
= data
->rpc_status
;
5083 nfs_post_op_update_inode_force_wcc(inode
, &data
->fattr
);
5085 nfs_refresh_inode(inode
, &data
->fattr
);
5091 int nfs4_proc_delegreturn(struct inode
*inode
, struct rpc_cred
*cred
, const nfs4_stateid
*stateid
, int issync
)
5093 struct nfs_server
*server
= NFS_SERVER(inode
);
5094 struct nfs4_exception exception
= { };
5097 err
= _nfs4_proc_delegreturn(inode
, cred
, stateid
, issync
);
5098 trace_nfs4_delegreturn(inode
, err
);
5100 case -NFS4ERR_STALE_STATEID
:
5101 case -NFS4ERR_EXPIRED
:
5105 err
= nfs4_handle_exception(server
, err
, &exception
);
5106 } while (exception
.retry
);
5110 #define NFS4_LOCK_MINTIMEOUT (1 * HZ)
5111 #define NFS4_LOCK_MAXTIMEOUT (30 * HZ)
5114 * sleep, with exponential backoff, and retry the LOCK operation.
5116 static unsigned long
5117 nfs4_set_lock_task_retry(unsigned long timeout
)
5119 freezable_schedule_timeout_killable_unsafe(timeout
);
5121 if (timeout
> NFS4_LOCK_MAXTIMEOUT
)
5122 return NFS4_LOCK_MAXTIMEOUT
;
5126 static int _nfs4_proc_getlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
5128 struct inode
*inode
= state
->inode
;
5129 struct nfs_server
*server
= NFS_SERVER(inode
);
5130 struct nfs_client
*clp
= server
->nfs_client
;
5131 struct nfs_lockt_args arg
= {
5132 .fh
= NFS_FH(inode
),
5135 struct nfs_lockt_res res
= {
5138 struct rpc_message msg
= {
5139 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCKT
],
5142 .rpc_cred
= state
->owner
->so_cred
,
5144 struct nfs4_lock_state
*lsp
;
5147 arg
.lock_owner
.clientid
= clp
->cl_clientid
;
5148 status
= nfs4_set_lock_state(state
, request
);
5151 lsp
= request
->fl_u
.nfs4_fl
.owner
;
5152 arg
.lock_owner
.id
= lsp
->ls_seqid
.owner_id
;
5153 arg
.lock_owner
.s_dev
= server
->s_dev
;
5154 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
5157 request
->fl_type
= F_UNLCK
;
5159 case -NFS4ERR_DENIED
:
5162 request
->fl_ops
->fl_release_private(request
);
5163 request
->fl_ops
= NULL
;
5168 static int nfs4_proc_getlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
5170 struct nfs4_exception exception
= { };
5174 err
= _nfs4_proc_getlk(state
, cmd
, request
);
5175 trace_nfs4_get_lock(request
, state
, cmd
, err
);
5176 err
= nfs4_handle_exception(NFS_SERVER(state
->inode
), err
,
5178 } while (exception
.retry
);
5182 static int do_vfs_lock(struct file
*file
, struct file_lock
*fl
)
5185 switch (fl
->fl_flags
& (FL_POSIX
|FL_FLOCK
)) {
5187 res
= posix_lock_file_wait(file
, fl
);
5190 res
= flock_lock_file_wait(file
, fl
);
5198 struct nfs4_unlockdata
{
5199 struct nfs_locku_args arg
;
5200 struct nfs_locku_res res
;
5201 struct nfs4_lock_state
*lsp
;
5202 struct nfs_open_context
*ctx
;
5203 struct file_lock fl
;
5204 const struct nfs_server
*server
;
5205 unsigned long timestamp
;
5208 static struct nfs4_unlockdata
*nfs4_alloc_unlockdata(struct file_lock
*fl
,
5209 struct nfs_open_context
*ctx
,
5210 struct nfs4_lock_state
*lsp
,
5211 struct nfs_seqid
*seqid
)
5213 struct nfs4_unlockdata
*p
;
5214 struct inode
*inode
= lsp
->ls_state
->inode
;
5216 p
= kzalloc(sizeof(*p
), GFP_NOFS
);
5219 p
->arg
.fh
= NFS_FH(inode
);
5221 p
->arg
.seqid
= seqid
;
5222 p
->res
.seqid
= seqid
;
5223 p
->arg
.stateid
= &lsp
->ls_stateid
;
5225 atomic_inc(&lsp
->ls_count
);
5226 /* Ensure we don't close file until we're done freeing locks! */
5227 p
->ctx
= get_nfs_open_context(ctx
);
5228 memcpy(&p
->fl
, fl
, sizeof(p
->fl
));
5229 p
->server
= NFS_SERVER(inode
);
5233 static void nfs4_locku_release_calldata(void *data
)
5235 struct nfs4_unlockdata
*calldata
= data
;
5236 nfs_free_seqid(calldata
->arg
.seqid
);
5237 nfs4_put_lock_state(calldata
->lsp
);
5238 put_nfs_open_context(calldata
->ctx
);
5242 static void nfs4_locku_done(struct rpc_task
*task
, void *data
)
5244 struct nfs4_unlockdata
*calldata
= data
;
5246 if (!nfs4_sequence_done(task
, &calldata
->res
.seq_res
))
5248 switch (task
->tk_status
) {
5250 nfs4_stateid_copy(&calldata
->lsp
->ls_stateid
,
5251 &calldata
->res
.stateid
);
5252 renew_lease(calldata
->server
, calldata
->timestamp
);
5254 case -NFS4ERR_BAD_STATEID
:
5255 case -NFS4ERR_OLD_STATEID
:
5256 case -NFS4ERR_STALE_STATEID
:
5257 case -NFS4ERR_EXPIRED
:
5260 if (nfs4_async_handle_error(task
, calldata
->server
, NULL
) == -EAGAIN
)
5261 rpc_restart_call_prepare(task
);
5263 nfs_release_seqid(calldata
->arg
.seqid
);
5266 static void nfs4_locku_prepare(struct rpc_task
*task
, void *data
)
5268 struct nfs4_unlockdata
*calldata
= data
;
5270 if (nfs_wait_on_sequence(calldata
->arg
.seqid
, task
) != 0)
5272 if (test_bit(NFS_LOCK_INITIALIZED
, &calldata
->lsp
->ls_flags
) == 0) {
5273 /* Note: exit _without_ running nfs4_locku_done */
5276 calldata
->timestamp
= jiffies
;
5277 if (nfs4_setup_sequence(calldata
->server
,
5278 &calldata
->arg
.seq_args
,
5279 &calldata
->res
.seq_res
,
5281 nfs_release_seqid(calldata
->arg
.seqid
);
5284 task
->tk_action
= NULL
;
5286 nfs4_sequence_done(task
, &calldata
->res
.seq_res
);
5289 static const struct rpc_call_ops nfs4_locku_ops
= {
5290 .rpc_call_prepare
= nfs4_locku_prepare
,
5291 .rpc_call_done
= nfs4_locku_done
,
5292 .rpc_release
= nfs4_locku_release_calldata
,
5295 static struct rpc_task
*nfs4_do_unlck(struct file_lock
*fl
,
5296 struct nfs_open_context
*ctx
,
5297 struct nfs4_lock_state
*lsp
,
5298 struct nfs_seqid
*seqid
)
5300 struct nfs4_unlockdata
*data
;
5301 struct rpc_message msg
= {
5302 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCKU
],
5303 .rpc_cred
= ctx
->cred
,
5305 struct rpc_task_setup task_setup_data
= {
5306 .rpc_client
= NFS_CLIENT(lsp
->ls_state
->inode
),
5307 .rpc_message
= &msg
,
5308 .callback_ops
= &nfs4_locku_ops
,
5309 .workqueue
= nfsiod_workqueue
,
5310 .flags
= RPC_TASK_ASYNC
,
5313 nfs4_state_protect(NFS_SERVER(lsp
->ls_state
->inode
)->nfs_client
,
5314 NFS_SP4_MACH_CRED_CLEANUP
, &task_setup_data
.rpc_client
, &msg
);
5316 /* Ensure this is an unlock - when canceling a lock, the
5317 * canceled lock is passed in, and it won't be an unlock.
5319 fl
->fl_type
= F_UNLCK
;
5321 data
= nfs4_alloc_unlockdata(fl
, ctx
, lsp
, seqid
);
5323 nfs_free_seqid(seqid
);
5324 return ERR_PTR(-ENOMEM
);
5327 nfs4_init_sequence(&data
->arg
.seq_args
, &data
->res
.seq_res
, 1);
5328 msg
.rpc_argp
= &data
->arg
;
5329 msg
.rpc_resp
= &data
->res
;
5330 task_setup_data
.callback_data
= data
;
5331 return rpc_run_task(&task_setup_data
);
5334 static int nfs4_proc_unlck(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
5336 struct inode
*inode
= state
->inode
;
5337 struct nfs4_state_owner
*sp
= state
->owner
;
5338 struct nfs_inode
*nfsi
= NFS_I(inode
);
5339 struct nfs_seqid
*seqid
;
5340 struct nfs4_lock_state
*lsp
;
5341 struct rpc_task
*task
;
5343 unsigned char fl_flags
= request
->fl_flags
;
5345 status
= nfs4_set_lock_state(state
, request
);
5346 /* Unlock _before_ we do the RPC call */
5347 request
->fl_flags
|= FL_EXISTS
;
5348 /* Exclude nfs_delegation_claim_locks() */
5349 mutex_lock(&sp
->so_delegreturn_mutex
);
5350 /* Exclude nfs4_reclaim_open_stateid() - note nesting! */
5351 down_read(&nfsi
->rwsem
);
5352 if (do_vfs_lock(request
->fl_file
, request
) == -ENOENT
) {
5353 up_read(&nfsi
->rwsem
);
5354 mutex_unlock(&sp
->so_delegreturn_mutex
);
5357 up_read(&nfsi
->rwsem
);
5358 mutex_unlock(&sp
->so_delegreturn_mutex
);
5361 /* Is this a delegated lock? */
5362 lsp
= request
->fl_u
.nfs4_fl
.owner
;
5363 if (test_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
) == 0)
5365 seqid
= nfs_alloc_seqid(&lsp
->ls_seqid
, GFP_KERNEL
);
5369 task
= nfs4_do_unlck(request
, nfs_file_open_context(request
->fl_file
), lsp
, seqid
);
5370 status
= PTR_ERR(task
);
5373 status
= nfs4_wait_for_completion_rpc_task(task
);
5376 request
->fl_flags
= fl_flags
;
5377 trace_nfs4_unlock(request
, state
, F_SETLK
, status
);
5381 struct nfs4_lockdata
{
5382 struct nfs_lock_args arg
;
5383 struct nfs_lock_res res
;
5384 struct nfs4_lock_state
*lsp
;
5385 struct nfs_open_context
*ctx
;
5386 struct file_lock fl
;
5387 unsigned long timestamp
;
5390 struct nfs_server
*server
;
5393 static struct nfs4_lockdata
*nfs4_alloc_lockdata(struct file_lock
*fl
,
5394 struct nfs_open_context
*ctx
, struct nfs4_lock_state
*lsp
,
5397 struct nfs4_lockdata
*p
;
5398 struct inode
*inode
= lsp
->ls_state
->inode
;
5399 struct nfs_server
*server
= NFS_SERVER(inode
);
5401 p
= kzalloc(sizeof(*p
), gfp_mask
);
5405 p
->arg
.fh
= NFS_FH(inode
);
5407 p
->arg
.open_seqid
= nfs_alloc_seqid(&lsp
->ls_state
->owner
->so_seqid
, gfp_mask
);
5408 if (p
->arg
.open_seqid
== NULL
)
5410 p
->arg
.lock_seqid
= nfs_alloc_seqid(&lsp
->ls_seqid
, gfp_mask
);
5411 if (p
->arg
.lock_seqid
== NULL
)
5412 goto out_free_seqid
;
5413 p
->arg
.lock_stateid
= &lsp
->ls_stateid
;
5414 p
->arg
.lock_owner
.clientid
= server
->nfs_client
->cl_clientid
;
5415 p
->arg
.lock_owner
.id
= lsp
->ls_seqid
.owner_id
;
5416 p
->arg
.lock_owner
.s_dev
= server
->s_dev
;
5417 p
->res
.lock_seqid
= p
->arg
.lock_seqid
;
5420 atomic_inc(&lsp
->ls_count
);
5421 p
->ctx
= get_nfs_open_context(ctx
);
5422 memcpy(&p
->fl
, fl
, sizeof(p
->fl
));
5425 nfs_free_seqid(p
->arg
.open_seqid
);
5431 static void nfs4_lock_prepare(struct rpc_task
*task
, void *calldata
)
5433 struct nfs4_lockdata
*data
= calldata
;
5434 struct nfs4_state
*state
= data
->lsp
->ls_state
;
5436 dprintk("%s: begin!\n", __func__
);
5437 if (nfs_wait_on_sequence(data
->arg
.lock_seqid
, task
) != 0)
5439 /* Do we need to do an open_to_lock_owner? */
5440 if (!(data
->arg
.lock_seqid
->sequence
->flags
& NFS_SEQID_CONFIRMED
)) {
5441 if (nfs_wait_on_sequence(data
->arg
.open_seqid
, task
) != 0) {
5442 goto out_release_lock_seqid
;
5444 data
->arg
.open_stateid
= &state
->open_stateid
;
5445 data
->arg
.new_lock_owner
= 1;
5446 data
->res
.open_seqid
= data
->arg
.open_seqid
;
5448 data
->arg
.new_lock_owner
= 0;
5449 if (!nfs4_valid_open_stateid(state
)) {
5450 data
->rpc_status
= -EBADF
;
5451 task
->tk_action
= NULL
;
5452 goto out_release_open_seqid
;
5454 data
->timestamp
= jiffies
;
5455 if (nfs4_setup_sequence(data
->server
,
5456 &data
->arg
.seq_args
,
5460 out_release_open_seqid
:
5461 nfs_release_seqid(data
->arg
.open_seqid
);
5462 out_release_lock_seqid
:
5463 nfs_release_seqid(data
->arg
.lock_seqid
);
5465 nfs4_sequence_done(task
, &data
->res
.seq_res
);
5466 dprintk("%s: done!, ret = %d\n", __func__
, data
->rpc_status
);
5469 static void nfs4_lock_done(struct rpc_task
*task
, void *calldata
)
5471 struct nfs4_lockdata
*data
= calldata
;
5473 dprintk("%s: begin!\n", __func__
);
5475 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
5478 data
->rpc_status
= task
->tk_status
;
5479 if (data
->arg
.new_lock_owner
!= 0) {
5480 if (data
->rpc_status
== 0)
5481 nfs_confirm_seqid(&data
->lsp
->ls_seqid
, 0);
5485 if (data
->rpc_status
== 0) {
5486 nfs4_stateid_copy(&data
->lsp
->ls_stateid
, &data
->res
.stateid
);
5487 set_bit(NFS_LOCK_INITIALIZED
, &data
->lsp
->ls_flags
);
5488 renew_lease(NFS_SERVER(data
->ctx
->dentry
->d_inode
), data
->timestamp
);
5491 dprintk("%s: done, ret = %d!\n", __func__
, data
->rpc_status
);
5494 static void nfs4_lock_release(void *calldata
)
5496 struct nfs4_lockdata
*data
= calldata
;
5498 dprintk("%s: begin!\n", __func__
);
5499 nfs_free_seqid(data
->arg
.open_seqid
);
5500 if (data
->cancelled
!= 0) {
5501 struct rpc_task
*task
;
5502 task
= nfs4_do_unlck(&data
->fl
, data
->ctx
, data
->lsp
,
5503 data
->arg
.lock_seqid
);
5505 rpc_put_task_async(task
);
5506 dprintk("%s: cancelling lock!\n", __func__
);
5508 nfs_free_seqid(data
->arg
.lock_seqid
);
5509 nfs4_put_lock_state(data
->lsp
);
5510 put_nfs_open_context(data
->ctx
);
5512 dprintk("%s: done!\n", __func__
);
5515 static const struct rpc_call_ops nfs4_lock_ops
= {
5516 .rpc_call_prepare
= nfs4_lock_prepare
,
5517 .rpc_call_done
= nfs4_lock_done
,
5518 .rpc_release
= nfs4_lock_release
,
5521 static void nfs4_handle_setlk_error(struct nfs_server
*server
, struct nfs4_lock_state
*lsp
, int new_lock_owner
, int error
)
5524 case -NFS4ERR_ADMIN_REVOKED
:
5525 case -NFS4ERR_BAD_STATEID
:
5526 lsp
->ls_seqid
.flags
&= ~NFS_SEQID_CONFIRMED
;
5527 if (new_lock_owner
!= 0 ||
5528 test_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
) != 0)
5529 nfs4_schedule_stateid_recovery(server
, lsp
->ls_state
);
5531 case -NFS4ERR_STALE_STATEID
:
5532 lsp
->ls_seqid
.flags
&= ~NFS_SEQID_CONFIRMED
;
5533 case -NFS4ERR_EXPIRED
:
5534 nfs4_schedule_lease_recovery(server
->nfs_client
);
5538 static int _nfs4_do_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*fl
, int recovery_type
)
5540 struct nfs4_lockdata
*data
;
5541 struct rpc_task
*task
;
5542 struct rpc_message msg
= {
5543 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCK
],
5544 .rpc_cred
= state
->owner
->so_cred
,
5546 struct rpc_task_setup task_setup_data
= {
5547 .rpc_client
= NFS_CLIENT(state
->inode
),
5548 .rpc_message
= &msg
,
5549 .callback_ops
= &nfs4_lock_ops
,
5550 .workqueue
= nfsiod_workqueue
,
5551 .flags
= RPC_TASK_ASYNC
,
5555 dprintk("%s: begin!\n", __func__
);
5556 data
= nfs4_alloc_lockdata(fl
, nfs_file_open_context(fl
->fl_file
),
5557 fl
->fl_u
.nfs4_fl
.owner
,
5558 recovery_type
== NFS_LOCK_NEW
? GFP_KERNEL
: GFP_NOFS
);
5562 data
->arg
.block
= 1;
5563 nfs4_init_sequence(&data
->arg
.seq_args
, &data
->res
.seq_res
, 1);
5564 msg
.rpc_argp
= &data
->arg
;
5565 msg
.rpc_resp
= &data
->res
;
5566 task_setup_data
.callback_data
= data
;
5567 if (recovery_type
> NFS_LOCK_NEW
) {
5568 if (recovery_type
== NFS_LOCK_RECLAIM
)
5569 data
->arg
.reclaim
= NFS_LOCK_RECLAIM
;
5570 nfs4_set_sequence_privileged(&data
->arg
.seq_args
);
5572 task
= rpc_run_task(&task_setup_data
);
5574 return PTR_ERR(task
);
5575 ret
= nfs4_wait_for_completion_rpc_task(task
);
5577 ret
= data
->rpc_status
;
5579 nfs4_handle_setlk_error(data
->server
, data
->lsp
,
5580 data
->arg
.new_lock_owner
, ret
);
5582 data
->cancelled
= 1;
5584 dprintk("%s: done, ret = %d!\n", __func__
, ret
);
5588 static int nfs4_lock_reclaim(struct nfs4_state
*state
, struct file_lock
*request
)
5590 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
5591 struct nfs4_exception exception
= {
5592 .inode
= state
->inode
,
5597 /* Cache the lock if possible... */
5598 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) != 0)
5600 err
= _nfs4_do_setlk(state
, F_SETLK
, request
, NFS_LOCK_RECLAIM
);
5601 trace_nfs4_lock_reclaim(request
, state
, F_SETLK
, err
);
5602 if (err
!= -NFS4ERR_DELAY
)
5604 nfs4_handle_exception(server
, err
, &exception
);
5605 } while (exception
.retry
);
5609 static int nfs4_lock_expired(struct nfs4_state
*state
, struct file_lock
*request
)
5611 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
5612 struct nfs4_exception exception
= {
5613 .inode
= state
->inode
,
5617 err
= nfs4_set_lock_state(state
, request
);
5620 if (!recover_lost_locks
) {
5621 set_bit(NFS_LOCK_LOST
, &request
->fl_u
.nfs4_fl
.owner
->ls_flags
);
5625 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) != 0)
5627 err
= _nfs4_do_setlk(state
, F_SETLK
, request
, NFS_LOCK_EXPIRED
);
5628 trace_nfs4_lock_expired(request
, state
, F_SETLK
, err
);
5632 case -NFS4ERR_GRACE
:
5633 case -NFS4ERR_DELAY
:
5634 nfs4_handle_exception(server
, err
, &exception
);
5637 } while (exception
.retry
);
5642 #if defined(CONFIG_NFS_V4_1)
5644 * nfs41_check_expired_locks - possibly free a lock stateid
5646 * @state: NFSv4 state for an inode
5648 * Returns NFS_OK if recovery for this stateid is now finished.
5649 * Otherwise a negative NFS4ERR value is returned.
5651 static int nfs41_check_expired_locks(struct nfs4_state
*state
)
5653 int status
, ret
= -NFS4ERR_BAD_STATEID
;
5654 struct nfs4_lock_state
*lsp
;
5655 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
5657 list_for_each_entry(lsp
, &state
->lock_states
, ls_locks
) {
5658 if (test_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
)) {
5659 struct rpc_cred
*cred
= lsp
->ls_state
->owner
->so_cred
;
5661 status
= nfs41_test_stateid(server
,
5664 trace_nfs4_test_lock_stateid(state
, lsp
, status
);
5665 if (status
!= NFS_OK
) {
5666 /* Free the stateid unless the server
5667 * informs us the stateid is unrecognized. */
5668 if (status
!= -NFS4ERR_BAD_STATEID
)
5669 nfs41_free_stateid(server
,
5672 clear_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
);
5681 static int nfs41_lock_expired(struct nfs4_state
*state
, struct file_lock
*request
)
5683 int status
= NFS_OK
;
5685 if (test_bit(LK_STATE_IN_USE
, &state
->flags
))
5686 status
= nfs41_check_expired_locks(state
);
5687 if (status
!= NFS_OK
)
5688 status
= nfs4_lock_expired(state
, request
);
5693 static int _nfs4_proc_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
5695 struct nfs4_state_owner
*sp
= state
->owner
;
5696 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
5697 unsigned char fl_flags
= request
->fl_flags
;
5699 int status
= -ENOLCK
;
5701 if ((fl_flags
& FL_POSIX
) &&
5702 !test_bit(NFS_STATE_POSIX_LOCKS
, &state
->flags
))
5704 /* Is this a delegated open? */
5705 status
= nfs4_set_lock_state(state
, request
);
5708 request
->fl_flags
|= FL_ACCESS
;
5709 status
= do_vfs_lock(request
->fl_file
, request
);
5712 down_read(&nfsi
->rwsem
);
5713 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
)) {
5714 /* Yes: cache locks! */
5715 /* ...but avoid races with delegation recall... */
5716 request
->fl_flags
= fl_flags
& ~FL_SLEEP
;
5717 status
= do_vfs_lock(request
->fl_file
, request
);
5720 seq
= raw_seqcount_begin(&sp
->so_reclaim_seqcount
);
5721 up_read(&nfsi
->rwsem
);
5722 status
= _nfs4_do_setlk(state
, cmd
, request
, NFS_LOCK_NEW
);
5725 down_read(&nfsi
->rwsem
);
5726 if (read_seqcount_retry(&sp
->so_reclaim_seqcount
, seq
)) {
5727 status
= -NFS4ERR_DELAY
;
5730 /* Note: we always want to sleep here! */
5731 request
->fl_flags
= fl_flags
| FL_SLEEP
;
5732 if (do_vfs_lock(request
->fl_file
, request
) < 0)
5733 printk(KERN_WARNING
"NFS: %s: VFS is out of sync with lock "
5734 "manager!\n", __func__
);
5736 up_read(&nfsi
->rwsem
);
5738 request
->fl_flags
= fl_flags
;
5742 static int nfs4_proc_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
5744 struct nfs4_exception exception
= {
5746 .inode
= state
->inode
,
5751 err
= _nfs4_proc_setlk(state
, cmd
, request
);
5752 trace_nfs4_set_lock(request
, state
, cmd
, err
);
5753 if (err
== -NFS4ERR_DENIED
)
5755 err
= nfs4_handle_exception(NFS_SERVER(state
->inode
),
5757 } while (exception
.retry
);
5762 nfs4_proc_lock(struct file
*filp
, int cmd
, struct file_lock
*request
)
5764 struct nfs_open_context
*ctx
;
5765 struct nfs4_state
*state
;
5766 unsigned long timeout
= NFS4_LOCK_MINTIMEOUT
;
5769 /* verify open state */
5770 ctx
= nfs_file_open_context(filp
);
5773 if (request
->fl_start
< 0 || request
->fl_end
< 0)
5776 if (IS_GETLK(cmd
)) {
5778 return nfs4_proc_getlk(state
, F_GETLK
, request
);
5782 if (!(IS_SETLK(cmd
) || IS_SETLKW(cmd
)))
5785 if (request
->fl_type
== F_UNLCK
) {
5787 return nfs4_proc_unlck(state
, cmd
, request
);
5794 * Don't rely on the VFS having checked the file open mode,
5795 * since it won't do this for flock() locks.
5797 switch (request
->fl_type
) {
5799 if (!(filp
->f_mode
& FMODE_READ
))
5803 if (!(filp
->f_mode
& FMODE_WRITE
))
5808 status
= nfs4_proc_setlk(state
, cmd
, request
);
5809 if ((status
!= -EAGAIN
) || IS_SETLK(cmd
))
5811 timeout
= nfs4_set_lock_task_retry(timeout
);
5812 status
= -ERESTARTSYS
;
5815 } while(status
< 0);
5819 int nfs4_lock_delegation_recall(struct file_lock
*fl
, struct nfs4_state
*state
, const nfs4_stateid
*stateid
)
5821 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
5824 err
= nfs4_set_lock_state(state
, fl
);
5827 err
= _nfs4_do_setlk(state
, F_SETLK
, fl
, NFS_LOCK_NEW
);
5828 return nfs4_handle_delegation_recall_error(server
, state
, stateid
, err
);
5831 struct nfs_release_lockowner_data
{
5832 struct nfs4_lock_state
*lsp
;
5833 struct nfs_server
*server
;
5834 struct nfs_release_lockowner_args args
;
5835 struct nfs_release_lockowner_res res
;
5836 unsigned long timestamp
;
5839 static void nfs4_release_lockowner_prepare(struct rpc_task
*task
, void *calldata
)
5841 struct nfs_release_lockowner_data
*data
= calldata
;
5842 nfs40_setup_sequence(data
->server
,
5843 &data
->args
.seq_args
, &data
->res
.seq_res
, task
);
5844 data
->timestamp
= jiffies
;
5847 static void nfs4_release_lockowner_done(struct rpc_task
*task
, void *calldata
)
5849 struct nfs_release_lockowner_data
*data
= calldata
;
5850 struct nfs_server
*server
= data
->server
;
5852 nfs40_sequence_done(task
, &data
->res
.seq_res
);
5854 switch (task
->tk_status
) {
5856 renew_lease(server
, data
->timestamp
);
5858 case -NFS4ERR_STALE_CLIENTID
:
5859 case -NFS4ERR_EXPIRED
:
5860 case -NFS4ERR_LEASE_MOVED
:
5861 case -NFS4ERR_DELAY
:
5862 if (nfs4_async_handle_error(task
, server
, NULL
) == -EAGAIN
)
5863 rpc_restart_call_prepare(task
);
5867 static void nfs4_release_lockowner_release(void *calldata
)
5869 struct nfs_release_lockowner_data
*data
= calldata
;
5870 nfs4_free_lock_state(data
->server
, data
->lsp
);
5874 static const struct rpc_call_ops nfs4_release_lockowner_ops
= {
5875 .rpc_call_prepare
= nfs4_release_lockowner_prepare
,
5876 .rpc_call_done
= nfs4_release_lockowner_done
,
5877 .rpc_release
= nfs4_release_lockowner_release
,
5880 static int nfs4_release_lockowner(struct nfs_server
*server
, struct nfs4_lock_state
*lsp
)
5882 struct nfs_release_lockowner_data
*data
;
5883 struct rpc_message msg
= {
5884 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RELEASE_LOCKOWNER
],
5887 if (server
->nfs_client
->cl_mvops
->minor_version
!= 0)
5890 data
= kmalloc(sizeof(*data
), GFP_NOFS
);
5894 data
->server
= server
;
5895 data
->args
.lock_owner
.clientid
= server
->nfs_client
->cl_clientid
;
5896 data
->args
.lock_owner
.id
= lsp
->ls_seqid
.owner_id
;
5897 data
->args
.lock_owner
.s_dev
= server
->s_dev
;
5899 msg
.rpc_argp
= &data
->args
;
5900 msg
.rpc_resp
= &data
->res
;
5901 nfs4_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 0);
5902 rpc_call_async(server
->client
, &msg
, 0, &nfs4_release_lockowner_ops
, data
);
5906 #define XATTR_NAME_NFSV4_ACL "system.nfs4_acl"
5908 static int nfs4_xattr_set_nfs4_acl(struct dentry
*dentry
, const char *key
,
5909 const void *buf
, size_t buflen
,
5910 int flags
, int type
)
5912 if (strcmp(key
, "") != 0)
5915 return nfs4_proc_set_acl(dentry
->d_inode
, buf
, buflen
);
5918 static int nfs4_xattr_get_nfs4_acl(struct dentry
*dentry
, const char *key
,
5919 void *buf
, size_t buflen
, int type
)
5921 if (strcmp(key
, "") != 0)
5924 return nfs4_proc_get_acl(dentry
->d_inode
, buf
, buflen
);
5927 static size_t nfs4_xattr_list_nfs4_acl(struct dentry
*dentry
, char *list
,
5928 size_t list_len
, const char *name
,
5929 size_t name_len
, int type
)
5931 size_t len
= sizeof(XATTR_NAME_NFSV4_ACL
);
5933 if (!nfs4_server_supports_acls(NFS_SERVER(dentry
->d_inode
)))
5936 if (list
&& len
<= list_len
)
5937 memcpy(list
, XATTR_NAME_NFSV4_ACL
, len
);
5941 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
5942 static inline int nfs4_server_supports_labels(struct nfs_server
*server
)
5944 return server
->caps
& NFS_CAP_SECURITY_LABEL
;
5947 static int nfs4_xattr_set_nfs4_label(struct dentry
*dentry
, const char *key
,
5948 const void *buf
, size_t buflen
,
5949 int flags
, int type
)
5951 if (security_ismaclabel(key
))
5952 return nfs4_set_security_label(dentry
, buf
, buflen
);
5957 static int nfs4_xattr_get_nfs4_label(struct dentry
*dentry
, const char *key
,
5958 void *buf
, size_t buflen
, int type
)
5960 if (security_ismaclabel(key
))
5961 return nfs4_get_security_label(dentry
->d_inode
, buf
, buflen
);
5965 static size_t nfs4_xattr_list_nfs4_label(struct dentry
*dentry
, char *list
,
5966 size_t list_len
, const char *name
,
5967 size_t name_len
, int type
)
5971 if (nfs_server_capable(dentry
->d_inode
, NFS_CAP_SECURITY_LABEL
)) {
5972 len
= security_inode_listsecurity(dentry
->d_inode
, NULL
, 0);
5973 if (list
&& len
<= list_len
)
5974 security_inode_listsecurity(dentry
->d_inode
, list
, len
);
5979 static const struct xattr_handler nfs4_xattr_nfs4_label_handler
= {
5980 .prefix
= XATTR_SECURITY_PREFIX
,
5981 .list
= nfs4_xattr_list_nfs4_label
,
5982 .get
= nfs4_xattr_get_nfs4_label
,
5983 .set
= nfs4_xattr_set_nfs4_label
,
5989 * nfs_fhget will use either the mounted_on_fileid or the fileid
5991 static void nfs_fixup_referral_attributes(struct nfs_fattr
*fattr
)
5993 if (!(((fattr
->valid
& NFS_ATTR_FATTR_MOUNTED_ON_FILEID
) ||
5994 (fattr
->valid
& NFS_ATTR_FATTR_FILEID
)) &&
5995 (fattr
->valid
& NFS_ATTR_FATTR_FSID
) &&
5996 (fattr
->valid
& NFS_ATTR_FATTR_V4_LOCATIONS
)))
5999 fattr
->valid
|= NFS_ATTR_FATTR_TYPE
| NFS_ATTR_FATTR_MODE
|
6000 NFS_ATTR_FATTR_NLINK
| NFS_ATTR_FATTR_V4_REFERRAL
;
6001 fattr
->mode
= S_IFDIR
| S_IRUGO
| S_IXUGO
;
6005 static int _nfs4_proc_fs_locations(struct rpc_clnt
*client
, struct inode
*dir
,
6006 const struct qstr
*name
,
6007 struct nfs4_fs_locations
*fs_locations
,
6010 struct nfs_server
*server
= NFS_SERVER(dir
);
6012 [0] = FATTR4_WORD0_FSID
| FATTR4_WORD0_FS_LOCATIONS
,
6014 struct nfs4_fs_locations_arg args
= {
6015 .dir_fh
= NFS_FH(dir
),
6020 struct nfs4_fs_locations_res res
= {
6021 .fs_locations
= fs_locations
,
6023 struct rpc_message msg
= {
6024 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FS_LOCATIONS
],
6030 dprintk("%s: start\n", __func__
);
6032 /* Ask for the fileid of the absent filesystem if mounted_on_fileid
6033 * is not supported */
6034 if (NFS_SERVER(dir
)->attr_bitmask
[1] & FATTR4_WORD1_MOUNTED_ON_FILEID
)
6035 bitmask
[1] |= FATTR4_WORD1_MOUNTED_ON_FILEID
;
6037 bitmask
[0] |= FATTR4_WORD0_FILEID
;
6039 nfs_fattr_init(&fs_locations
->fattr
);
6040 fs_locations
->server
= server
;
6041 fs_locations
->nlocations
= 0;
6042 status
= nfs4_call_sync(client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
6043 dprintk("%s: returned status = %d\n", __func__
, status
);
6047 int nfs4_proc_fs_locations(struct rpc_clnt
*client
, struct inode
*dir
,
6048 const struct qstr
*name
,
6049 struct nfs4_fs_locations
*fs_locations
,
6052 struct nfs4_exception exception
= { };
6055 err
= _nfs4_proc_fs_locations(client
, dir
, name
,
6056 fs_locations
, page
);
6057 trace_nfs4_get_fs_locations(dir
, name
, err
);
6058 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
6060 } while (exception
.retry
);
6065 * This operation also signals the server that this client is
6066 * performing migration recovery. The server can stop returning
6067 * NFS4ERR_LEASE_MOVED to this client. A RENEW operation is
6068 * appended to this compound to identify the client ID which is
6069 * performing recovery.
6071 static int _nfs40_proc_get_locations(struct inode
*inode
,
6072 struct nfs4_fs_locations
*locations
,
6073 struct page
*page
, struct rpc_cred
*cred
)
6075 struct nfs_server
*server
= NFS_SERVER(inode
);
6076 struct rpc_clnt
*clnt
= server
->client
;
6078 [0] = FATTR4_WORD0_FSID
| FATTR4_WORD0_FS_LOCATIONS
,
6080 struct nfs4_fs_locations_arg args
= {
6081 .clientid
= server
->nfs_client
->cl_clientid
,
6082 .fh
= NFS_FH(inode
),
6085 .migration
= 1, /* skip LOOKUP */
6086 .renew
= 1, /* append RENEW */
6088 struct nfs4_fs_locations_res res
= {
6089 .fs_locations
= locations
,
6093 struct rpc_message msg
= {
6094 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FS_LOCATIONS
],
6099 unsigned long now
= jiffies
;
6102 nfs_fattr_init(&locations
->fattr
);
6103 locations
->server
= server
;
6104 locations
->nlocations
= 0;
6106 nfs4_init_sequence(&args
.seq_args
, &res
.seq_res
, 0);
6107 nfs4_set_sequence_privileged(&args
.seq_args
);
6108 status
= nfs4_call_sync_sequence(clnt
, server
, &msg
,
6109 &args
.seq_args
, &res
.seq_res
);
6113 renew_lease(server
, now
);
6117 #ifdef CONFIG_NFS_V4_1
6120 * This operation also signals the server that this client is
6121 * performing migration recovery. The server can stop asserting
6122 * SEQ4_STATUS_LEASE_MOVED for this client. The client ID
6123 * performing this operation is identified in the SEQUENCE
6124 * operation in this compound.
6126 * When the client supports GETATTR(fs_locations_info), it can
6127 * be plumbed in here.
6129 static int _nfs41_proc_get_locations(struct inode
*inode
,
6130 struct nfs4_fs_locations
*locations
,
6131 struct page
*page
, struct rpc_cred
*cred
)
6133 struct nfs_server
*server
= NFS_SERVER(inode
);
6134 struct rpc_clnt
*clnt
= server
->client
;
6136 [0] = FATTR4_WORD0_FSID
| FATTR4_WORD0_FS_LOCATIONS
,
6138 struct nfs4_fs_locations_arg args
= {
6139 .fh
= NFS_FH(inode
),
6142 .migration
= 1, /* skip LOOKUP */
6144 struct nfs4_fs_locations_res res
= {
6145 .fs_locations
= locations
,
6148 struct rpc_message msg
= {
6149 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FS_LOCATIONS
],
6156 nfs_fattr_init(&locations
->fattr
);
6157 locations
->server
= server
;
6158 locations
->nlocations
= 0;
6160 nfs4_init_sequence(&args
.seq_args
, &res
.seq_res
, 0);
6161 nfs4_set_sequence_privileged(&args
.seq_args
);
6162 status
= nfs4_call_sync_sequence(clnt
, server
, &msg
,
6163 &args
.seq_args
, &res
.seq_res
);
6164 if (status
== NFS4_OK
&&
6165 res
.seq_res
.sr_status_flags
& SEQ4_STATUS_LEASE_MOVED
)
6166 status
= -NFS4ERR_LEASE_MOVED
;
6170 #endif /* CONFIG_NFS_V4_1 */
6173 * nfs4_proc_get_locations - discover locations for a migrated FSID
6174 * @inode: inode on FSID that is migrating
6175 * @locations: result of query
6177 * @cred: credential to use for this operation
6179 * Returns NFS4_OK on success, a negative NFS4ERR status code if the
6180 * operation failed, or a negative errno if a local error occurred.
6182 * On success, "locations" is filled in, but if the server has
6183 * no locations information, NFS_ATTR_FATTR_V4_LOCATIONS is not
6186 * -NFS4ERR_LEASE_MOVED is returned if the server still has leases
6187 * from this client that require migration recovery.
6189 int nfs4_proc_get_locations(struct inode
*inode
,
6190 struct nfs4_fs_locations
*locations
,
6191 struct page
*page
, struct rpc_cred
*cred
)
6193 struct nfs_server
*server
= NFS_SERVER(inode
);
6194 struct nfs_client
*clp
= server
->nfs_client
;
6195 const struct nfs4_mig_recovery_ops
*ops
=
6196 clp
->cl_mvops
->mig_recovery_ops
;
6197 struct nfs4_exception exception
= { };
6200 dprintk("%s: FSID %llx:%llx on \"%s\"\n", __func__
,
6201 (unsigned long long)server
->fsid
.major
,
6202 (unsigned long long)server
->fsid
.minor
,
6204 nfs_display_fhandle(NFS_FH(inode
), __func__
);
6207 status
= ops
->get_locations(inode
, locations
, page
, cred
);
6208 if (status
!= -NFS4ERR_DELAY
)
6210 nfs4_handle_exception(server
, status
, &exception
);
6211 } while (exception
.retry
);
6216 * This operation also signals the server that this client is
6217 * performing "lease moved" recovery. The server can stop
6218 * returning NFS4ERR_LEASE_MOVED to this client. A RENEW operation
6219 * is appended to this compound to identify the client ID which is
6220 * performing recovery.
6222 static int _nfs40_proc_fsid_present(struct inode
*inode
, struct rpc_cred
*cred
)
6224 struct nfs_server
*server
= NFS_SERVER(inode
);
6225 struct nfs_client
*clp
= NFS_SERVER(inode
)->nfs_client
;
6226 struct rpc_clnt
*clnt
= server
->client
;
6227 struct nfs4_fsid_present_arg args
= {
6228 .fh
= NFS_FH(inode
),
6229 .clientid
= clp
->cl_clientid
,
6230 .renew
= 1, /* append RENEW */
6232 struct nfs4_fsid_present_res res
= {
6235 struct rpc_message msg
= {
6236 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FSID_PRESENT
],
6241 unsigned long now
= jiffies
;
6244 res
.fh
= nfs_alloc_fhandle();
6248 nfs4_init_sequence(&args
.seq_args
, &res
.seq_res
, 0);
6249 nfs4_set_sequence_privileged(&args
.seq_args
);
6250 status
= nfs4_call_sync_sequence(clnt
, server
, &msg
,
6251 &args
.seq_args
, &res
.seq_res
);
6252 nfs_free_fhandle(res
.fh
);
6256 do_renew_lease(clp
, now
);
6260 #ifdef CONFIG_NFS_V4_1
6263 * This operation also signals the server that this client is
6264 * performing "lease moved" recovery. The server can stop asserting
6265 * SEQ4_STATUS_LEASE_MOVED for this client. The client ID performing
6266 * this operation is identified in the SEQUENCE operation in this
6269 static int _nfs41_proc_fsid_present(struct inode
*inode
, struct rpc_cred
*cred
)
6271 struct nfs_server
*server
= NFS_SERVER(inode
);
6272 struct rpc_clnt
*clnt
= server
->client
;
6273 struct nfs4_fsid_present_arg args
= {
6274 .fh
= NFS_FH(inode
),
6276 struct nfs4_fsid_present_res res
= {
6278 struct rpc_message msg
= {
6279 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FSID_PRESENT
],
6286 res
.fh
= nfs_alloc_fhandle();
6290 nfs4_init_sequence(&args
.seq_args
, &res
.seq_res
, 0);
6291 nfs4_set_sequence_privileged(&args
.seq_args
);
6292 status
= nfs4_call_sync_sequence(clnt
, server
, &msg
,
6293 &args
.seq_args
, &res
.seq_res
);
6294 nfs_free_fhandle(res
.fh
);
6295 if (status
== NFS4_OK
&&
6296 res
.seq_res
.sr_status_flags
& SEQ4_STATUS_LEASE_MOVED
)
6297 status
= -NFS4ERR_LEASE_MOVED
;
6301 #endif /* CONFIG_NFS_V4_1 */
6304 * nfs4_proc_fsid_present - Is this FSID present or absent on server?
6305 * @inode: inode on FSID to check
6306 * @cred: credential to use for this operation
6308 * Server indicates whether the FSID is present, moved, or not
6309 * recognized. This operation is necessary to clear a LEASE_MOVED
6310 * condition for this client ID.
6312 * Returns NFS4_OK if the FSID is present on this server,
6313 * -NFS4ERR_MOVED if the FSID is no longer present, a negative
6314 * NFS4ERR code if some error occurred on the server, or a
6315 * negative errno if a local failure occurred.
6317 int nfs4_proc_fsid_present(struct inode
*inode
, struct rpc_cred
*cred
)
6319 struct nfs_server
*server
= NFS_SERVER(inode
);
6320 struct nfs_client
*clp
= server
->nfs_client
;
6321 const struct nfs4_mig_recovery_ops
*ops
=
6322 clp
->cl_mvops
->mig_recovery_ops
;
6323 struct nfs4_exception exception
= { };
6326 dprintk("%s: FSID %llx:%llx on \"%s\"\n", __func__
,
6327 (unsigned long long)server
->fsid
.major
,
6328 (unsigned long long)server
->fsid
.minor
,
6330 nfs_display_fhandle(NFS_FH(inode
), __func__
);
6333 status
= ops
->fsid_present(inode
, cred
);
6334 if (status
!= -NFS4ERR_DELAY
)
6336 nfs4_handle_exception(server
, status
, &exception
);
6337 } while (exception
.retry
);
6342 * If 'use_integrity' is true and the state managment nfs_client
6343 * cl_rpcclient is using krb5i/p, use the integrity protected cl_rpcclient
6344 * and the machine credential as per RFC3530bis and RFC5661 Security
6345 * Considerations sections. Otherwise, just use the user cred with the
6346 * filesystem's rpc_client.
6348 static int _nfs4_proc_secinfo(struct inode
*dir
, const struct qstr
*name
, struct nfs4_secinfo_flavors
*flavors
, bool use_integrity
)
6351 struct nfs4_secinfo_arg args
= {
6352 .dir_fh
= NFS_FH(dir
),
6355 struct nfs4_secinfo_res res
= {
6358 struct rpc_message msg
= {
6359 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SECINFO
],
6363 struct rpc_clnt
*clnt
= NFS_SERVER(dir
)->client
;
6364 struct rpc_cred
*cred
= NULL
;
6366 if (use_integrity
) {
6367 clnt
= NFS_SERVER(dir
)->nfs_client
->cl_rpcclient
;
6368 cred
= nfs4_get_clid_cred(NFS_SERVER(dir
)->nfs_client
);
6369 msg
.rpc_cred
= cred
;
6372 dprintk("NFS call secinfo %s\n", name
->name
);
6374 nfs4_state_protect(NFS_SERVER(dir
)->nfs_client
,
6375 NFS_SP4_MACH_CRED_SECINFO
, &clnt
, &msg
);
6377 status
= nfs4_call_sync(clnt
, NFS_SERVER(dir
), &msg
, &args
.seq_args
,
6379 dprintk("NFS reply secinfo: %d\n", status
);
6387 int nfs4_proc_secinfo(struct inode
*dir
, const struct qstr
*name
,
6388 struct nfs4_secinfo_flavors
*flavors
)
6390 struct nfs4_exception exception
= { };
6393 err
= -NFS4ERR_WRONGSEC
;
6395 /* try to use integrity protection with machine cred */
6396 if (_nfs4_is_integrity_protected(NFS_SERVER(dir
)->nfs_client
))
6397 err
= _nfs4_proc_secinfo(dir
, name
, flavors
, true);
6400 * if unable to use integrity protection, or SECINFO with
6401 * integrity protection returns NFS4ERR_WRONGSEC (which is
6402 * disallowed by spec, but exists in deployed servers) use
6403 * the current filesystem's rpc_client and the user cred.
6405 if (err
== -NFS4ERR_WRONGSEC
)
6406 err
= _nfs4_proc_secinfo(dir
, name
, flavors
, false);
6408 trace_nfs4_secinfo(dir
, name
, err
);
6409 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
6411 } while (exception
.retry
);
6415 #ifdef CONFIG_NFS_V4_1
6417 * Check the exchange flags returned by the server for invalid flags, having
6418 * both PNFS and NON_PNFS flags set, and not having one of NON_PNFS, PNFS, or
6421 static int nfs4_check_cl_exchange_flags(u32 flags
)
6423 if (flags
& ~EXCHGID4_FLAG_MASK_R
)
6425 if ((flags
& EXCHGID4_FLAG_USE_PNFS_MDS
) &&
6426 (flags
& EXCHGID4_FLAG_USE_NON_PNFS
))
6428 if (!(flags
& (EXCHGID4_FLAG_MASK_PNFS
)))
6432 return -NFS4ERR_INVAL
;
6436 nfs41_same_server_scope(struct nfs41_server_scope
*a
,
6437 struct nfs41_server_scope
*b
)
6439 if (a
->server_scope_sz
== b
->server_scope_sz
&&
6440 memcmp(a
->server_scope
, b
->server_scope
, a
->server_scope_sz
) == 0)
6447 * nfs4_proc_bind_conn_to_session()
6449 * The 4.1 client currently uses the same TCP connection for the
6450 * fore and backchannel.
6452 int nfs4_proc_bind_conn_to_session(struct nfs_client
*clp
, struct rpc_cred
*cred
)
6455 struct nfs41_bind_conn_to_session_res res
;
6456 struct rpc_message msg
= {
6458 &nfs4_procedures
[NFSPROC4_CLNT_BIND_CONN_TO_SESSION
],
6464 dprintk("--> %s\n", __func__
);
6466 res
.session
= kzalloc(sizeof(struct nfs4_session
), GFP_NOFS
);
6467 if (unlikely(res
.session
== NULL
)) {
6472 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
6473 trace_nfs4_bind_conn_to_session(clp
, status
);
6475 if (memcmp(res
.session
->sess_id
.data
,
6476 clp
->cl_session
->sess_id
.data
, NFS4_MAX_SESSIONID_LEN
)) {
6477 dprintk("NFS: %s: Session ID mismatch\n", __func__
);
6481 if (res
.dir
!= NFS4_CDFS4_BOTH
) {
6482 dprintk("NFS: %s: Unexpected direction from server\n",
6487 if (res
.use_conn_in_rdma_mode
) {
6488 dprintk("NFS: %s: Server returned RDMA mode = true\n",
6497 dprintk("<-- %s status= %d\n", __func__
, status
);
6502 * Minimum set of SP4_MACH_CRED operations from RFC 5661 in the enforce map
6503 * and operations we'd like to see to enable certain features in the allow map
6505 static const struct nfs41_state_protection nfs4_sp4_mach_cred_request
= {
6506 .how
= SP4_MACH_CRED
,
6507 .enforce
.u
.words
= {
6508 [1] = 1 << (OP_BIND_CONN_TO_SESSION
- 32) |
6509 1 << (OP_EXCHANGE_ID
- 32) |
6510 1 << (OP_CREATE_SESSION
- 32) |
6511 1 << (OP_DESTROY_SESSION
- 32) |
6512 1 << (OP_DESTROY_CLIENTID
- 32)
6515 [0] = 1 << (OP_CLOSE
) |
6518 [1] = 1 << (OP_SECINFO
- 32) |
6519 1 << (OP_SECINFO_NO_NAME
- 32) |
6520 1 << (OP_TEST_STATEID
- 32) |
6521 1 << (OP_FREE_STATEID
- 32) |
6522 1 << (OP_WRITE
- 32)
6527 * Select the state protection mode for client `clp' given the server results
6528 * from exchange_id in `sp'.
6530 * Returns 0 on success, negative errno otherwise.
6532 static int nfs4_sp4_select_mode(struct nfs_client
*clp
,
6533 struct nfs41_state_protection
*sp
)
6535 static const u32 supported_enforce
[NFS4_OP_MAP_NUM_WORDS
] = {
6536 [1] = 1 << (OP_BIND_CONN_TO_SESSION
- 32) |
6537 1 << (OP_EXCHANGE_ID
- 32) |
6538 1 << (OP_CREATE_SESSION
- 32) |
6539 1 << (OP_DESTROY_SESSION
- 32) |
6540 1 << (OP_DESTROY_CLIENTID
- 32)
6544 if (sp
->how
== SP4_MACH_CRED
) {
6545 /* Print state protect result */
6546 dfprintk(MOUNT
, "Server SP4_MACH_CRED support:\n");
6547 for (i
= 0; i
<= LAST_NFS4_OP
; i
++) {
6548 if (test_bit(i
, sp
->enforce
.u
.longs
))
6549 dfprintk(MOUNT
, " enforce op %d\n", i
);
6550 if (test_bit(i
, sp
->allow
.u
.longs
))
6551 dfprintk(MOUNT
, " allow op %d\n", i
);
6554 /* make sure nothing is on enforce list that isn't supported */
6555 for (i
= 0; i
< NFS4_OP_MAP_NUM_WORDS
; i
++) {
6556 if (sp
->enforce
.u
.words
[i
] & ~supported_enforce
[i
]) {
6557 dfprintk(MOUNT
, "sp4_mach_cred: disabled\n");
6563 * Minimal mode - state operations are allowed to use machine
6564 * credential. Note this already happens by default, so the
6565 * client doesn't have to do anything more than the negotiation.
6567 * NOTE: we don't care if EXCHANGE_ID is in the list -
6568 * we're already using the machine cred for exchange_id
6569 * and will never use a different cred.
6571 if (test_bit(OP_BIND_CONN_TO_SESSION
, sp
->enforce
.u
.longs
) &&
6572 test_bit(OP_CREATE_SESSION
, sp
->enforce
.u
.longs
) &&
6573 test_bit(OP_DESTROY_SESSION
, sp
->enforce
.u
.longs
) &&
6574 test_bit(OP_DESTROY_CLIENTID
, sp
->enforce
.u
.longs
)) {
6575 dfprintk(MOUNT
, "sp4_mach_cred:\n");
6576 dfprintk(MOUNT
, " minimal mode enabled\n");
6577 set_bit(NFS_SP4_MACH_CRED_MINIMAL
, &clp
->cl_sp4_flags
);
6579 dfprintk(MOUNT
, "sp4_mach_cred: disabled\n");
6583 if (test_bit(OP_CLOSE
, sp
->allow
.u
.longs
) &&
6584 test_bit(OP_LOCKU
, sp
->allow
.u
.longs
)) {
6585 dfprintk(MOUNT
, " cleanup mode enabled\n");
6586 set_bit(NFS_SP4_MACH_CRED_CLEANUP
, &clp
->cl_sp4_flags
);
6589 if (test_bit(OP_SECINFO
, sp
->allow
.u
.longs
) &&
6590 test_bit(OP_SECINFO_NO_NAME
, sp
->allow
.u
.longs
)) {
6591 dfprintk(MOUNT
, " secinfo mode enabled\n");
6592 set_bit(NFS_SP4_MACH_CRED_SECINFO
, &clp
->cl_sp4_flags
);
6595 if (test_bit(OP_TEST_STATEID
, sp
->allow
.u
.longs
) &&
6596 test_bit(OP_FREE_STATEID
, sp
->allow
.u
.longs
)) {
6597 dfprintk(MOUNT
, " stateid mode enabled\n");
6598 set_bit(NFS_SP4_MACH_CRED_STATEID
, &clp
->cl_sp4_flags
);
6601 if (test_bit(OP_WRITE
, sp
->allow
.u
.longs
)) {
6602 dfprintk(MOUNT
, " write mode enabled\n");
6603 set_bit(NFS_SP4_MACH_CRED_WRITE
, &clp
->cl_sp4_flags
);
6606 if (test_bit(OP_COMMIT
, sp
->allow
.u
.longs
)) {
6607 dfprintk(MOUNT
, " commit mode enabled\n");
6608 set_bit(NFS_SP4_MACH_CRED_COMMIT
, &clp
->cl_sp4_flags
);
6616 * _nfs4_proc_exchange_id()
6618 * Wrapper for EXCHANGE_ID operation.
6620 static int _nfs4_proc_exchange_id(struct nfs_client
*clp
, struct rpc_cred
*cred
,
6623 nfs4_verifier verifier
;
6624 struct nfs41_exchange_id_args args
= {
6625 .verifier
= &verifier
,
6627 #ifdef CONFIG_NFS_V4_1_MIGRATION
6628 .flags
= EXCHGID4_FLAG_SUPP_MOVED_REFER
|
6629 EXCHGID4_FLAG_BIND_PRINC_STATEID
|
6630 EXCHGID4_FLAG_SUPP_MOVED_MIGR
,
6632 .flags
= EXCHGID4_FLAG_SUPP_MOVED_REFER
|
6633 EXCHGID4_FLAG_BIND_PRINC_STATEID
,
6636 struct nfs41_exchange_id_res res
= {
6640 struct rpc_message msg
= {
6641 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_EXCHANGE_ID
],
6647 nfs4_init_boot_verifier(clp
, &verifier
);
6648 args
.id_len
= nfs4_init_uniform_client_string(clp
, args
.id
,
6650 dprintk("NFS call exchange_id auth=%s, '%.*s'\n",
6651 clp
->cl_rpcclient
->cl_auth
->au_ops
->au_name
,
6652 args
.id_len
, args
.id
);
6654 res
.server_owner
= kzalloc(sizeof(struct nfs41_server_owner
),
6656 if (unlikely(res
.server_owner
== NULL
)) {
6661 res
.server_scope
= kzalloc(sizeof(struct nfs41_server_scope
),
6663 if (unlikely(res
.server_scope
== NULL
)) {
6665 goto out_server_owner
;
6668 res
.impl_id
= kzalloc(sizeof(struct nfs41_impl_id
), GFP_NOFS
);
6669 if (unlikely(res
.impl_id
== NULL
)) {
6671 goto out_server_scope
;
6676 args
.state_protect
.how
= SP4_NONE
;
6680 args
.state_protect
= nfs4_sp4_mach_cred_request
;
6687 goto out_server_scope
;
6690 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
6691 trace_nfs4_exchange_id(clp
, status
);
6693 status
= nfs4_check_cl_exchange_flags(res
.flags
);
6696 status
= nfs4_sp4_select_mode(clp
, &res
.state_protect
);
6699 clp
->cl_clientid
= res
.clientid
;
6700 clp
->cl_exchange_flags
= (res
.flags
& ~EXCHGID4_FLAG_CONFIRMED_R
);
6701 if (!(res
.flags
& EXCHGID4_FLAG_CONFIRMED_R
))
6702 clp
->cl_seqid
= res
.seqid
;
6704 kfree(clp
->cl_serverowner
);
6705 clp
->cl_serverowner
= res
.server_owner
;
6706 res
.server_owner
= NULL
;
6708 /* use the most recent implementation id */
6709 kfree(clp
->cl_implid
);
6710 clp
->cl_implid
= res
.impl_id
;
6712 if (clp
->cl_serverscope
!= NULL
&&
6713 !nfs41_same_server_scope(clp
->cl_serverscope
,
6714 res
.server_scope
)) {
6715 dprintk("%s: server_scope mismatch detected\n",
6717 set_bit(NFS4CLNT_SERVER_SCOPE_MISMATCH
, &clp
->cl_state
);
6718 kfree(clp
->cl_serverscope
);
6719 clp
->cl_serverscope
= NULL
;
6722 if (clp
->cl_serverscope
== NULL
) {
6723 clp
->cl_serverscope
= res
.server_scope
;
6730 kfree(res
.server_owner
);
6732 kfree(res
.server_scope
);
6734 if (clp
->cl_implid
!= NULL
)
6735 dprintk("NFS reply exchange_id: Server Implementation ID: "
6736 "domain: %s, name: %s, date: %llu,%u\n",
6737 clp
->cl_implid
->domain
, clp
->cl_implid
->name
,
6738 clp
->cl_implid
->date
.seconds
,
6739 clp
->cl_implid
->date
.nseconds
);
6740 dprintk("NFS reply exchange_id: %d\n", status
);
6745 * nfs4_proc_exchange_id()
6747 * Returns zero, a negative errno, or a negative NFS4ERR status code.
6749 * Since the clientid has expired, all compounds using sessions
6750 * associated with the stale clientid will be returning
6751 * NFS4ERR_BADSESSION in the sequence operation, and will therefore
6752 * be in some phase of session reset.
6754 * Will attempt to negotiate SP4_MACH_CRED if krb5i / krb5p auth is used.
6756 int nfs4_proc_exchange_id(struct nfs_client
*clp
, struct rpc_cred
*cred
)
6758 rpc_authflavor_t authflavor
= clp
->cl_rpcclient
->cl_auth
->au_flavor
;
6761 /* try SP4_MACH_CRED if krb5i/p */
6762 if (authflavor
== RPC_AUTH_GSS_KRB5I
||
6763 authflavor
== RPC_AUTH_GSS_KRB5P
) {
6764 status
= _nfs4_proc_exchange_id(clp
, cred
, SP4_MACH_CRED
);
6770 return _nfs4_proc_exchange_id(clp
, cred
, SP4_NONE
);
6773 static int _nfs4_proc_destroy_clientid(struct nfs_client
*clp
,
6774 struct rpc_cred
*cred
)
6776 struct rpc_message msg
= {
6777 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DESTROY_CLIENTID
],
6783 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
6784 trace_nfs4_destroy_clientid(clp
, status
);
6786 dprintk("NFS: Got error %d from the server %s on "
6787 "DESTROY_CLIENTID.", status
, clp
->cl_hostname
);
6791 static int nfs4_proc_destroy_clientid(struct nfs_client
*clp
,
6792 struct rpc_cred
*cred
)
6797 for (loop
= NFS4_MAX_LOOP_ON_RECOVER
; loop
!= 0; loop
--) {
6798 ret
= _nfs4_proc_destroy_clientid(clp
, cred
);
6800 case -NFS4ERR_DELAY
:
6801 case -NFS4ERR_CLIENTID_BUSY
:
6811 int nfs4_destroy_clientid(struct nfs_client
*clp
)
6813 struct rpc_cred
*cred
;
6816 if (clp
->cl_mvops
->minor_version
< 1)
6818 if (clp
->cl_exchange_flags
== 0)
6820 if (clp
->cl_preserve_clid
)
6822 cred
= nfs4_get_clid_cred(clp
);
6823 ret
= nfs4_proc_destroy_clientid(clp
, cred
);
6828 case -NFS4ERR_STALE_CLIENTID
:
6829 clp
->cl_exchange_flags
= 0;
6835 struct nfs4_get_lease_time_data
{
6836 struct nfs4_get_lease_time_args
*args
;
6837 struct nfs4_get_lease_time_res
*res
;
6838 struct nfs_client
*clp
;
6841 static void nfs4_get_lease_time_prepare(struct rpc_task
*task
,
6844 struct nfs4_get_lease_time_data
*data
=
6845 (struct nfs4_get_lease_time_data
*)calldata
;
6847 dprintk("--> %s\n", __func__
);
6848 /* just setup sequence, do not trigger session recovery
6849 since we're invoked within one */
6850 nfs41_setup_sequence(data
->clp
->cl_session
,
6851 &data
->args
->la_seq_args
,
6852 &data
->res
->lr_seq_res
,
6854 dprintk("<-- %s\n", __func__
);
6858 * Called from nfs4_state_manager thread for session setup, so don't recover
6859 * from sequence operation or clientid errors.
6861 static void nfs4_get_lease_time_done(struct rpc_task
*task
, void *calldata
)
6863 struct nfs4_get_lease_time_data
*data
=
6864 (struct nfs4_get_lease_time_data
*)calldata
;
6866 dprintk("--> %s\n", __func__
);
6867 if (!nfs41_sequence_done(task
, &data
->res
->lr_seq_res
))
6869 switch (task
->tk_status
) {
6870 case -NFS4ERR_DELAY
:
6871 case -NFS4ERR_GRACE
:
6872 dprintk("%s Retry: tk_status %d\n", __func__
, task
->tk_status
);
6873 rpc_delay(task
, NFS4_POLL_RETRY_MIN
);
6874 task
->tk_status
= 0;
6876 case -NFS4ERR_RETRY_UNCACHED_REP
:
6877 rpc_restart_call_prepare(task
);
6880 dprintk("<-- %s\n", __func__
);
6883 static const struct rpc_call_ops nfs4_get_lease_time_ops
= {
6884 .rpc_call_prepare
= nfs4_get_lease_time_prepare
,
6885 .rpc_call_done
= nfs4_get_lease_time_done
,
6888 int nfs4_proc_get_lease_time(struct nfs_client
*clp
, struct nfs_fsinfo
*fsinfo
)
6890 struct rpc_task
*task
;
6891 struct nfs4_get_lease_time_args args
;
6892 struct nfs4_get_lease_time_res res
= {
6893 .lr_fsinfo
= fsinfo
,
6895 struct nfs4_get_lease_time_data data
= {
6900 struct rpc_message msg
= {
6901 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GET_LEASE_TIME
],
6905 struct rpc_task_setup task_setup
= {
6906 .rpc_client
= clp
->cl_rpcclient
,
6907 .rpc_message
= &msg
,
6908 .callback_ops
= &nfs4_get_lease_time_ops
,
6909 .callback_data
= &data
,
6910 .flags
= RPC_TASK_TIMEOUT
,
6914 nfs4_init_sequence(&args
.la_seq_args
, &res
.lr_seq_res
, 0);
6915 nfs4_set_sequence_privileged(&args
.la_seq_args
);
6916 dprintk("--> %s\n", __func__
);
6917 task
= rpc_run_task(&task_setup
);
6920 status
= PTR_ERR(task
);
6922 status
= task
->tk_status
;
6925 dprintk("<-- %s return %d\n", __func__
, status
);
6931 * Initialize the values to be used by the client in CREATE_SESSION
6932 * If nfs4_init_session set the fore channel request and response sizes,
6935 * Set the back channel max_resp_sz_cached to zero to force the client to
6936 * always set csa_cachethis to FALSE because the current implementation
6937 * of the back channel DRC only supports caching the CB_SEQUENCE operation.
6939 static void nfs4_init_channel_attrs(struct nfs41_create_session_args
*args
)
6941 unsigned int max_rqst_sz
, max_resp_sz
;
6943 max_rqst_sz
= NFS_MAX_FILE_IO_SIZE
+ nfs41_maxwrite_overhead
;
6944 max_resp_sz
= NFS_MAX_FILE_IO_SIZE
+ nfs41_maxread_overhead
;
6946 /* Fore channel attributes */
6947 args
->fc_attrs
.max_rqst_sz
= max_rqst_sz
;
6948 args
->fc_attrs
.max_resp_sz
= max_resp_sz
;
6949 args
->fc_attrs
.max_ops
= NFS4_MAX_OPS
;
6950 args
->fc_attrs
.max_reqs
= max_session_slots
;
6952 dprintk("%s: Fore Channel : max_rqst_sz=%u max_resp_sz=%u "
6953 "max_ops=%u max_reqs=%u\n",
6955 args
->fc_attrs
.max_rqst_sz
, args
->fc_attrs
.max_resp_sz
,
6956 args
->fc_attrs
.max_ops
, args
->fc_attrs
.max_reqs
);
6958 /* Back channel attributes */
6959 args
->bc_attrs
.max_rqst_sz
= PAGE_SIZE
;
6960 args
->bc_attrs
.max_resp_sz
= PAGE_SIZE
;
6961 args
->bc_attrs
.max_resp_sz_cached
= 0;
6962 args
->bc_attrs
.max_ops
= NFS4_MAX_BACK_CHANNEL_OPS
;
6963 args
->bc_attrs
.max_reqs
= 1;
6965 dprintk("%s: Back Channel : max_rqst_sz=%u max_resp_sz=%u "
6966 "max_resp_sz_cached=%u max_ops=%u max_reqs=%u\n",
6968 args
->bc_attrs
.max_rqst_sz
, args
->bc_attrs
.max_resp_sz
,
6969 args
->bc_attrs
.max_resp_sz_cached
, args
->bc_attrs
.max_ops
,
6970 args
->bc_attrs
.max_reqs
);
6973 static int nfs4_verify_fore_channel_attrs(struct nfs41_create_session_args
*args
, struct nfs4_session
*session
)
6975 struct nfs4_channel_attrs
*sent
= &args
->fc_attrs
;
6976 struct nfs4_channel_attrs
*rcvd
= &session
->fc_attrs
;
6978 if (rcvd
->max_resp_sz
> sent
->max_resp_sz
)
6981 * Our requested max_ops is the minimum we need; we're not
6982 * prepared to break up compounds into smaller pieces than that.
6983 * So, no point even trying to continue if the server won't
6986 if (rcvd
->max_ops
< sent
->max_ops
)
6988 if (rcvd
->max_reqs
== 0)
6990 if (rcvd
->max_reqs
> NFS4_MAX_SLOT_TABLE
)
6991 rcvd
->max_reqs
= NFS4_MAX_SLOT_TABLE
;
6995 static int nfs4_verify_back_channel_attrs(struct nfs41_create_session_args
*args
, struct nfs4_session
*session
)
6997 struct nfs4_channel_attrs
*sent
= &args
->bc_attrs
;
6998 struct nfs4_channel_attrs
*rcvd
= &session
->bc_attrs
;
7000 if (rcvd
->max_rqst_sz
> sent
->max_rqst_sz
)
7002 if (rcvd
->max_resp_sz
< sent
->max_resp_sz
)
7004 if (rcvd
->max_resp_sz_cached
> sent
->max_resp_sz_cached
)
7006 /* These would render the backchannel useless: */
7007 if (rcvd
->max_ops
!= sent
->max_ops
)
7009 if (rcvd
->max_reqs
!= sent
->max_reqs
)
7014 static int nfs4_verify_channel_attrs(struct nfs41_create_session_args
*args
,
7015 struct nfs4_session
*session
)
7019 ret
= nfs4_verify_fore_channel_attrs(args
, session
);
7022 return nfs4_verify_back_channel_attrs(args
, session
);
7025 static int _nfs4_proc_create_session(struct nfs_client
*clp
,
7026 struct rpc_cred
*cred
)
7028 struct nfs4_session
*session
= clp
->cl_session
;
7029 struct nfs41_create_session_args args
= {
7031 .cb_program
= NFS4_CALLBACK
,
7033 struct nfs41_create_session_res res
= {
7036 struct rpc_message msg
= {
7037 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CREATE_SESSION
],
7044 nfs4_init_channel_attrs(&args
);
7045 args
.flags
= (SESSION4_PERSIST
| SESSION4_BACK_CHAN
);
7047 status
= rpc_call_sync(session
->clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
7048 trace_nfs4_create_session(clp
, status
);
7051 /* Verify the session's negotiated channel_attrs values */
7052 status
= nfs4_verify_channel_attrs(&args
, session
);
7053 /* Increment the clientid slot sequence id */
7061 * Issues a CREATE_SESSION operation to the server.
7062 * It is the responsibility of the caller to verify the session is
7063 * expired before calling this routine.
7065 int nfs4_proc_create_session(struct nfs_client
*clp
, struct rpc_cred
*cred
)
7069 struct nfs4_session
*session
= clp
->cl_session
;
7071 dprintk("--> %s clp=%p session=%p\n", __func__
, clp
, session
);
7073 status
= _nfs4_proc_create_session(clp
, cred
);
7077 /* Init or reset the session slot tables */
7078 status
= nfs4_setup_session_slot_tables(session
);
7079 dprintk("slot table setup returned %d\n", status
);
7083 ptr
= (unsigned *)&session
->sess_id
.data
[0];
7084 dprintk("%s client>seqid %d sessionid %u:%u:%u:%u\n", __func__
,
7085 clp
->cl_seqid
, ptr
[0], ptr
[1], ptr
[2], ptr
[3]);
7087 dprintk("<-- %s\n", __func__
);
7092 * Issue the over-the-wire RPC DESTROY_SESSION.
7093 * The caller must serialize access to this routine.
7095 int nfs4_proc_destroy_session(struct nfs4_session
*session
,
7096 struct rpc_cred
*cred
)
7098 struct rpc_message msg
= {
7099 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DESTROY_SESSION
],
7100 .rpc_argp
= session
,
7105 dprintk("--> nfs4_proc_destroy_session\n");
7107 /* session is still being setup */
7108 if (session
->clp
->cl_cons_state
!= NFS_CS_READY
)
7111 status
= rpc_call_sync(session
->clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
7112 trace_nfs4_destroy_session(session
->clp
, status
);
7115 dprintk("NFS: Got error %d from the server on DESTROY_SESSION. "
7116 "Session has been destroyed regardless...\n", status
);
7118 dprintk("<-- nfs4_proc_destroy_session\n");
7123 * Renew the cl_session lease.
7125 struct nfs4_sequence_data
{
7126 struct nfs_client
*clp
;
7127 struct nfs4_sequence_args args
;
7128 struct nfs4_sequence_res res
;
7131 static void nfs41_sequence_release(void *data
)
7133 struct nfs4_sequence_data
*calldata
= data
;
7134 struct nfs_client
*clp
= calldata
->clp
;
7136 if (atomic_read(&clp
->cl_count
) > 1)
7137 nfs4_schedule_state_renewal(clp
);
7138 nfs_put_client(clp
);
7142 static int nfs41_sequence_handle_errors(struct rpc_task
*task
, struct nfs_client
*clp
)
7144 switch(task
->tk_status
) {
7145 case -NFS4ERR_DELAY
:
7146 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
7149 nfs4_schedule_lease_recovery(clp
);
7154 static void nfs41_sequence_call_done(struct rpc_task
*task
, void *data
)
7156 struct nfs4_sequence_data
*calldata
= data
;
7157 struct nfs_client
*clp
= calldata
->clp
;
7159 if (!nfs41_sequence_done(task
, task
->tk_msg
.rpc_resp
))
7162 trace_nfs4_sequence(clp
, task
->tk_status
);
7163 if (task
->tk_status
< 0) {
7164 dprintk("%s ERROR %d\n", __func__
, task
->tk_status
);
7165 if (atomic_read(&clp
->cl_count
) == 1)
7168 if (nfs41_sequence_handle_errors(task
, clp
) == -EAGAIN
) {
7169 rpc_restart_call_prepare(task
);
7173 dprintk("%s rpc_cred %p\n", __func__
, task
->tk_msg
.rpc_cred
);
7175 dprintk("<-- %s\n", __func__
);
7178 static void nfs41_sequence_prepare(struct rpc_task
*task
, void *data
)
7180 struct nfs4_sequence_data
*calldata
= data
;
7181 struct nfs_client
*clp
= calldata
->clp
;
7182 struct nfs4_sequence_args
*args
;
7183 struct nfs4_sequence_res
*res
;
7185 args
= task
->tk_msg
.rpc_argp
;
7186 res
= task
->tk_msg
.rpc_resp
;
7188 nfs41_setup_sequence(clp
->cl_session
, args
, res
, task
);
7191 static const struct rpc_call_ops nfs41_sequence_ops
= {
7192 .rpc_call_done
= nfs41_sequence_call_done
,
7193 .rpc_call_prepare
= nfs41_sequence_prepare
,
7194 .rpc_release
= nfs41_sequence_release
,
7197 static struct rpc_task
*_nfs41_proc_sequence(struct nfs_client
*clp
,
7198 struct rpc_cred
*cred
,
7201 struct nfs4_sequence_data
*calldata
;
7202 struct rpc_message msg
= {
7203 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SEQUENCE
],
7206 struct rpc_task_setup task_setup_data
= {
7207 .rpc_client
= clp
->cl_rpcclient
,
7208 .rpc_message
= &msg
,
7209 .callback_ops
= &nfs41_sequence_ops
,
7210 .flags
= RPC_TASK_ASYNC
| RPC_TASK_TIMEOUT
,
7213 if (!atomic_inc_not_zero(&clp
->cl_count
))
7214 return ERR_PTR(-EIO
);
7215 calldata
= kzalloc(sizeof(*calldata
), GFP_NOFS
);
7216 if (calldata
== NULL
) {
7217 nfs_put_client(clp
);
7218 return ERR_PTR(-ENOMEM
);
7220 nfs4_init_sequence(&calldata
->args
, &calldata
->res
, 0);
7222 nfs4_set_sequence_privileged(&calldata
->args
);
7223 msg
.rpc_argp
= &calldata
->args
;
7224 msg
.rpc_resp
= &calldata
->res
;
7225 calldata
->clp
= clp
;
7226 task_setup_data
.callback_data
= calldata
;
7228 return rpc_run_task(&task_setup_data
);
7231 static int nfs41_proc_async_sequence(struct nfs_client
*clp
, struct rpc_cred
*cred
, unsigned renew_flags
)
7233 struct rpc_task
*task
;
7236 if ((renew_flags
& NFS4_RENEW_TIMEOUT
) == 0)
7238 task
= _nfs41_proc_sequence(clp
, cred
, false);
7240 ret
= PTR_ERR(task
);
7242 rpc_put_task_async(task
);
7243 dprintk("<-- %s status=%d\n", __func__
, ret
);
7247 static int nfs4_proc_sequence(struct nfs_client
*clp
, struct rpc_cred
*cred
)
7249 struct rpc_task
*task
;
7252 task
= _nfs41_proc_sequence(clp
, cred
, true);
7254 ret
= PTR_ERR(task
);
7257 ret
= rpc_wait_for_completion_task(task
);
7259 struct nfs4_sequence_res
*res
= task
->tk_msg
.rpc_resp
;
7261 if (task
->tk_status
== 0)
7262 nfs41_handle_sequence_flag_errors(clp
, res
->sr_status_flags
);
7263 ret
= task
->tk_status
;
7267 dprintk("<-- %s status=%d\n", __func__
, ret
);
7271 struct nfs4_reclaim_complete_data
{
7272 struct nfs_client
*clp
;
7273 struct nfs41_reclaim_complete_args arg
;
7274 struct nfs41_reclaim_complete_res res
;
7277 static void nfs4_reclaim_complete_prepare(struct rpc_task
*task
, void *data
)
7279 struct nfs4_reclaim_complete_data
*calldata
= data
;
7281 nfs41_setup_sequence(calldata
->clp
->cl_session
,
7282 &calldata
->arg
.seq_args
,
7283 &calldata
->res
.seq_res
,
7287 static int nfs41_reclaim_complete_handle_errors(struct rpc_task
*task
, struct nfs_client
*clp
)
7289 switch(task
->tk_status
) {
7291 case -NFS4ERR_COMPLETE_ALREADY
:
7292 case -NFS4ERR_WRONG_CRED
: /* What to do here? */
7294 case -NFS4ERR_DELAY
:
7295 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
7297 case -NFS4ERR_RETRY_UNCACHED_REP
:
7300 nfs4_schedule_lease_recovery(clp
);
7305 static void nfs4_reclaim_complete_done(struct rpc_task
*task
, void *data
)
7307 struct nfs4_reclaim_complete_data
*calldata
= data
;
7308 struct nfs_client
*clp
= calldata
->clp
;
7309 struct nfs4_sequence_res
*res
= &calldata
->res
.seq_res
;
7311 dprintk("--> %s\n", __func__
);
7312 if (!nfs41_sequence_done(task
, res
))
7315 trace_nfs4_reclaim_complete(clp
, task
->tk_status
);
7316 if (nfs41_reclaim_complete_handle_errors(task
, clp
) == -EAGAIN
) {
7317 rpc_restart_call_prepare(task
);
7320 dprintk("<-- %s\n", __func__
);
7323 static void nfs4_free_reclaim_complete_data(void *data
)
7325 struct nfs4_reclaim_complete_data
*calldata
= data
;
7330 static const struct rpc_call_ops nfs4_reclaim_complete_call_ops
= {
7331 .rpc_call_prepare
= nfs4_reclaim_complete_prepare
,
7332 .rpc_call_done
= nfs4_reclaim_complete_done
,
7333 .rpc_release
= nfs4_free_reclaim_complete_data
,
7337 * Issue a global reclaim complete.
7339 static int nfs41_proc_reclaim_complete(struct nfs_client
*clp
,
7340 struct rpc_cred
*cred
)
7342 struct nfs4_reclaim_complete_data
*calldata
;
7343 struct rpc_task
*task
;
7344 struct rpc_message msg
= {
7345 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RECLAIM_COMPLETE
],
7348 struct rpc_task_setup task_setup_data
= {
7349 .rpc_client
= clp
->cl_rpcclient
,
7350 .rpc_message
= &msg
,
7351 .callback_ops
= &nfs4_reclaim_complete_call_ops
,
7352 .flags
= RPC_TASK_ASYNC
,
7354 int status
= -ENOMEM
;
7356 dprintk("--> %s\n", __func__
);
7357 calldata
= kzalloc(sizeof(*calldata
), GFP_NOFS
);
7358 if (calldata
== NULL
)
7360 calldata
->clp
= clp
;
7361 calldata
->arg
.one_fs
= 0;
7363 nfs4_init_sequence(&calldata
->arg
.seq_args
, &calldata
->res
.seq_res
, 0);
7364 nfs4_set_sequence_privileged(&calldata
->arg
.seq_args
);
7365 msg
.rpc_argp
= &calldata
->arg
;
7366 msg
.rpc_resp
= &calldata
->res
;
7367 task_setup_data
.callback_data
= calldata
;
7368 task
= rpc_run_task(&task_setup_data
);
7370 status
= PTR_ERR(task
);
7373 status
= nfs4_wait_for_completion_rpc_task(task
);
7375 status
= task
->tk_status
;
7379 dprintk("<-- %s status=%d\n", __func__
, status
);
7384 nfs4_layoutget_prepare(struct rpc_task
*task
, void *calldata
)
7386 struct nfs4_layoutget
*lgp
= calldata
;
7387 struct nfs_server
*server
= NFS_SERVER(lgp
->args
.inode
);
7388 struct nfs4_session
*session
= nfs4_get_session(server
);
7390 dprintk("--> %s\n", __func__
);
7391 /* Note the is a race here, where a CB_LAYOUTRECALL can come in
7392 * right now covering the LAYOUTGET we are about to send.
7393 * However, that is not so catastrophic, and there seems
7394 * to be no way to prevent it completely.
7396 if (nfs41_setup_sequence(session
, &lgp
->args
.seq_args
,
7397 &lgp
->res
.seq_res
, task
))
7399 if (pnfs_choose_layoutget_stateid(&lgp
->args
.stateid
,
7400 NFS_I(lgp
->args
.inode
)->layout
,
7401 lgp
->args
.ctx
->state
)) {
7402 rpc_exit(task
, NFS4_OK
);
7406 static void nfs4_layoutget_done(struct rpc_task
*task
, void *calldata
)
7408 struct nfs4_layoutget
*lgp
= calldata
;
7409 struct inode
*inode
= lgp
->args
.inode
;
7410 struct nfs_server
*server
= NFS_SERVER(inode
);
7411 struct pnfs_layout_hdr
*lo
;
7412 struct nfs4_state
*state
= NULL
;
7413 unsigned long timeo
, now
, giveup
;
7415 dprintk("--> %s tk_status => %d\n", __func__
, -task
->tk_status
);
7417 if (!nfs41_sequence_done(task
, &lgp
->res
.seq_res
))
7420 switch (task
->tk_status
) {
7424 * NFS4ERR_LAYOUTTRYLATER is a conflict with another client
7425 * (or clients) writing to the same RAID stripe
7427 case -NFS4ERR_LAYOUTTRYLATER
:
7429 * NFS4ERR_RECALLCONFLICT is when conflict with self (must recall
7430 * existing layout before getting a new one).
7432 case -NFS4ERR_RECALLCONFLICT
:
7433 timeo
= rpc_get_timeout(task
->tk_client
);
7434 giveup
= lgp
->args
.timestamp
+ timeo
;
7436 if (time_after(giveup
, now
)) {
7437 unsigned long delay
;
7440 * - Not less then NFS4_POLL_RETRY_MIN.
7441 * - One last time a jiffie before we give up
7442 * - exponential backoff (time_now minus start_attempt)
7444 delay
= max_t(unsigned long, NFS4_POLL_RETRY_MIN
,
7445 min((giveup
- now
- 1),
7446 now
- lgp
->args
.timestamp
));
7448 dprintk("%s: NFS4ERR_RECALLCONFLICT waiting %lu\n",
7450 rpc_delay(task
, delay
);
7451 task
->tk_status
= 0;
7452 rpc_restart_call_prepare(task
);
7453 goto out
; /* Do not call nfs4_async_handle_error() */
7456 case -NFS4ERR_EXPIRED
:
7457 case -NFS4ERR_BAD_STATEID
:
7458 spin_lock(&inode
->i_lock
);
7459 lo
= NFS_I(inode
)->layout
;
7460 if (!lo
|| list_empty(&lo
->plh_segs
)) {
7461 spin_unlock(&inode
->i_lock
);
7462 /* If the open stateid was bad, then recover it. */
7463 state
= lgp
->args
.ctx
->state
;
7467 pnfs_mark_matching_lsegs_invalid(lo
, &head
, NULL
);
7468 spin_unlock(&inode
->i_lock
);
7469 /* Mark the bad layout state as invalid, then
7470 * retry using the open stateid. */
7471 pnfs_free_lseg_list(&head
);
7474 if (nfs4_async_handle_error(task
, server
, state
) == -EAGAIN
)
7475 rpc_restart_call_prepare(task
);
7477 dprintk("<-- %s\n", __func__
);
7480 static size_t max_response_pages(struct nfs_server
*server
)
7482 u32 max_resp_sz
= server
->nfs_client
->cl_session
->fc_attrs
.max_resp_sz
;
7483 return nfs_page_array_len(0, max_resp_sz
);
7486 static void nfs4_free_pages(struct page
**pages
, size_t size
)
7493 for (i
= 0; i
< size
; i
++) {
7496 __free_page(pages
[i
]);
7501 static struct page
**nfs4_alloc_pages(size_t size
, gfp_t gfp_flags
)
7503 struct page
**pages
;
7506 pages
= kcalloc(size
, sizeof(struct page
*), gfp_flags
);
7508 dprintk("%s: can't alloc array of %zu pages\n", __func__
, size
);
7512 for (i
= 0; i
< size
; i
++) {
7513 pages
[i
] = alloc_page(gfp_flags
);
7515 dprintk("%s: failed to allocate page\n", __func__
);
7516 nfs4_free_pages(pages
, size
);
7524 static void nfs4_layoutget_release(void *calldata
)
7526 struct nfs4_layoutget
*lgp
= calldata
;
7527 struct inode
*inode
= lgp
->args
.inode
;
7528 struct nfs_server
*server
= NFS_SERVER(inode
);
7529 size_t max_pages
= max_response_pages(server
);
7531 dprintk("--> %s\n", __func__
);
7532 nfs4_free_pages(lgp
->args
.layout
.pages
, max_pages
);
7533 pnfs_put_layout_hdr(NFS_I(inode
)->layout
);
7534 put_nfs_open_context(lgp
->args
.ctx
);
7536 dprintk("<-- %s\n", __func__
);
7539 static const struct rpc_call_ops nfs4_layoutget_call_ops
= {
7540 .rpc_call_prepare
= nfs4_layoutget_prepare
,
7541 .rpc_call_done
= nfs4_layoutget_done
,
7542 .rpc_release
= nfs4_layoutget_release
,
7545 struct pnfs_layout_segment
*
7546 nfs4_proc_layoutget(struct nfs4_layoutget
*lgp
, gfp_t gfp_flags
)
7548 struct inode
*inode
= lgp
->args
.inode
;
7549 struct nfs_server
*server
= NFS_SERVER(inode
);
7550 size_t max_pages
= max_response_pages(server
);
7551 struct rpc_task
*task
;
7552 struct rpc_message msg
= {
7553 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LAYOUTGET
],
7554 .rpc_argp
= &lgp
->args
,
7555 .rpc_resp
= &lgp
->res
,
7556 .rpc_cred
= lgp
->cred
,
7558 struct rpc_task_setup task_setup_data
= {
7559 .rpc_client
= server
->client
,
7560 .rpc_message
= &msg
,
7561 .callback_ops
= &nfs4_layoutget_call_ops
,
7562 .callback_data
= lgp
,
7563 .flags
= RPC_TASK_ASYNC
,
7565 struct pnfs_layout_segment
*lseg
= NULL
;
7568 dprintk("--> %s\n", __func__
);
7570 lgp
->args
.layout
.pages
= nfs4_alloc_pages(max_pages
, gfp_flags
);
7571 if (!lgp
->args
.layout
.pages
) {
7572 nfs4_layoutget_release(lgp
);
7573 return ERR_PTR(-ENOMEM
);
7575 lgp
->args
.layout
.pglen
= max_pages
* PAGE_SIZE
;
7576 lgp
->args
.timestamp
= jiffies
;
7578 lgp
->res
.layoutp
= &lgp
->args
.layout
;
7579 lgp
->res
.seq_res
.sr_slot
= NULL
;
7580 nfs4_init_sequence(&lgp
->args
.seq_args
, &lgp
->res
.seq_res
, 0);
7582 /* nfs4_layoutget_release calls pnfs_put_layout_hdr */
7583 pnfs_get_layout_hdr(NFS_I(inode
)->layout
);
7585 task
= rpc_run_task(&task_setup_data
);
7587 return ERR_CAST(task
);
7588 status
= nfs4_wait_for_completion_rpc_task(task
);
7590 status
= task
->tk_status
;
7591 trace_nfs4_layoutget(lgp
->args
.ctx
,
7595 /* if layoutp->len is 0, nfs4_layoutget_prepare called rpc_exit */
7596 if (status
== 0 && lgp
->res
.layoutp
->len
)
7597 lseg
= pnfs_layout_process(lgp
);
7599 dprintk("<-- %s status=%d\n", __func__
, status
);
7601 return ERR_PTR(status
);
7606 nfs4_layoutreturn_prepare(struct rpc_task
*task
, void *calldata
)
7608 struct nfs4_layoutreturn
*lrp
= calldata
;
7610 dprintk("--> %s\n", __func__
);
7611 nfs41_setup_sequence(lrp
->clp
->cl_session
,
7612 &lrp
->args
.seq_args
,
7617 static void nfs4_layoutreturn_done(struct rpc_task
*task
, void *calldata
)
7619 struct nfs4_layoutreturn
*lrp
= calldata
;
7620 struct nfs_server
*server
;
7622 dprintk("--> %s\n", __func__
);
7624 if (!nfs41_sequence_done(task
, &lrp
->res
.seq_res
))
7627 server
= NFS_SERVER(lrp
->args
.inode
);
7628 switch (task
->tk_status
) {
7630 task
->tk_status
= 0;
7633 case -NFS4ERR_DELAY
:
7634 if (nfs4_async_handle_error(task
, server
, NULL
) != -EAGAIN
)
7636 rpc_restart_call_prepare(task
);
7639 dprintk("<-- %s\n", __func__
);
7642 static void nfs4_layoutreturn_release(void *calldata
)
7644 struct nfs4_layoutreturn
*lrp
= calldata
;
7645 struct pnfs_layout_hdr
*lo
= lrp
->args
.layout
;
7647 dprintk("--> %s\n", __func__
);
7648 spin_lock(&lo
->plh_inode
->i_lock
);
7649 if (lrp
->res
.lrs_present
)
7650 pnfs_set_layout_stateid(lo
, &lrp
->res
.stateid
, true);
7651 lo
->plh_block_lgets
--;
7652 spin_unlock(&lo
->plh_inode
->i_lock
);
7653 pnfs_put_layout_hdr(lrp
->args
.layout
);
7655 dprintk("<-- %s\n", __func__
);
7658 static const struct rpc_call_ops nfs4_layoutreturn_call_ops
= {
7659 .rpc_call_prepare
= nfs4_layoutreturn_prepare
,
7660 .rpc_call_done
= nfs4_layoutreturn_done
,
7661 .rpc_release
= nfs4_layoutreturn_release
,
7664 int nfs4_proc_layoutreturn(struct nfs4_layoutreturn
*lrp
)
7666 struct rpc_task
*task
;
7667 struct rpc_message msg
= {
7668 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LAYOUTRETURN
],
7669 .rpc_argp
= &lrp
->args
,
7670 .rpc_resp
= &lrp
->res
,
7671 .rpc_cred
= lrp
->cred
,
7673 struct rpc_task_setup task_setup_data
= {
7674 .rpc_client
= NFS_SERVER(lrp
->args
.inode
)->client
,
7675 .rpc_message
= &msg
,
7676 .callback_ops
= &nfs4_layoutreturn_call_ops
,
7677 .callback_data
= lrp
,
7681 dprintk("--> %s\n", __func__
);
7682 nfs4_init_sequence(&lrp
->args
.seq_args
, &lrp
->res
.seq_res
, 1);
7683 task
= rpc_run_task(&task_setup_data
);
7685 return PTR_ERR(task
);
7686 status
= task
->tk_status
;
7687 trace_nfs4_layoutreturn(lrp
->args
.inode
, status
);
7688 dprintk("<-- %s status=%d\n", __func__
, status
);
7694 * Retrieve the list of Data Server devices from the MDS.
7696 static int _nfs4_getdevicelist(struct nfs_server
*server
,
7697 const struct nfs_fh
*fh
,
7698 struct pnfs_devicelist
*devlist
)
7700 struct nfs4_getdevicelist_args args
= {
7702 .layoutclass
= server
->pnfs_curr_ld
->id
,
7704 struct nfs4_getdevicelist_res res
= {
7707 struct rpc_message msg
= {
7708 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETDEVICELIST
],
7714 dprintk("--> %s\n", __func__
);
7715 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
,
7717 dprintk("<-- %s status=%d\n", __func__
, status
);
7721 int nfs4_proc_getdevicelist(struct nfs_server
*server
,
7722 const struct nfs_fh
*fh
,
7723 struct pnfs_devicelist
*devlist
)
7725 struct nfs4_exception exception
= { };
7729 err
= nfs4_handle_exception(server
,
7730 _nfs4_getdevicelist(server
, fh
, devlist
),
7732 } while (exception
.retry
);
7734 dprintk("%s: err=%d, num_devs=%u\n", __func__
,
7735 err
, devlist
->num_devs
);
7739 EXPORT_SYMBOL_GPL(nfs4_proc_getdevicelist
);
7742 _nfs4_proc_getdeviceinfo(struct nfs_server
*server
,
7743 struct pnfs_device
*pdev
,
7744 struct rpc_cred
*cred
)
7746 struct nfs4_getdeviceinfo_args args
= {
7749 struct nfs4_getdeviceinfo_res res
= {
7752 struct rpc_message msg
= {
7753 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETDEVICEINFO
],
7760 dprintk("--> %s\n", __func__
);
7761 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
7762 dprintk("<-- %s status=%d\n", __func__
, status
);
7767 int nfs4_proc_getdeviceinfo(struct nfs_server
*server
,
7768 struct pnfs_device
*pdev
,
7769 struct rpc_cred
*cred
)
7771 struct nfs4_exception exception
= { };
7775 err
= nfs4_handle_exception(server
,
7776 _nfs4_proc_getdeviceinfo(server
, pdev
, cred
),
7778 } while (exception
.retry
);
7781 EXPORT_SYMBOL_GPL(nfs4_proc_getdeviceinfo
);
7783 static void nfs4_layoutcommit_prepare(struct rpc_task
*task
, void *calldata
)
7785 struct nfs4_layoutcommit_data
*data
= calldata
;
7786 struct nfs_server
*server
= NFS_SERVER(data
->args
.inode
);
7787 struct nfs4_session
*session
= nfs4_get_session(server
);
7789 nfs41_setup_sequence(session
,
7790 &data
->args
.seq_args
,
7796 nfs4_layoutcommit_done(struct rpc_task
*task
, void *calldata
)
7798 struct nfs4_layoutcommit_data
*data
= calldata
;
7799 struct nfs_server
*server
= NFS_SERVER(data
->args
.inode
);
7801 if (!nfs41_sequence_done(task
, &data
->res
.seq_res
))
7804 switch (task
->tk_status
) { /* Just ignore these failures */
7805 case -NFS4ERR_DELEG_REVOKED
: /* layout was recalled */
7806 case -NFS4ERR_BADIOMODE
: /* no IOMODE_RW layout for range */
7807 case -NFS4ERR_BADLAYOUT
: /* no layout */
7808 case -NFS4ERR_GRACE
: /* loca_recalim always false */
7809 task
->tk_status
= 0;
7813 if (nfs4_async_handle_error(task
, server
, NULL
) == -EAGAIN
) {
7814 rpc_restart_call_prepare(task
);
7820 static void nfs4_layoutcommit_release(void *calldata
)
7822 struct nfs4_layoutcommit_data
*data
= calldata
;
7824 pnfs_cleanup_layoutcommit(data
);
7825 nfs_post_op_update_inode_force_wcc(data
->args
.inode
,
7827 put_rpccred(data
->cred
);
7831 static const struct rpc_call_ops nfs4_layoutcommit_ops
= {
7832 .rpc_call_prepare
= nfs4_layoutcommit_prepare
,
7833 .rpc_call_done
= nfs4_layoutcommit_done
,
7834 .rpc_release
= nfs4_layoutcommit_release
,
7838 nfs4_proc_layoutcommit(struct nfs4_layoutcommit_data
*data
, bool sync
)
7840 struct rpc_message msg
= {
7841 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LAYOUTCOMMIT
],
7842 .rpc_argp
= &data
->args
,
7843 .rpc_resp
= &data
->res
,
7844 .rpc_cred
= data
->cred
,
7846 struct rpc_task_setup task_setup_data
= {
7847 .task
= &data
->task
,
7848 .rpc_client
= NFS_CLIENT(data
->args
.inode
),
7849 .rpc_message
= &msg
,
7850 .callback_ops
= &nfs4_layoutcommit_ops
,
7851 .callback_data
= data
,
7852 .flags
= RPC_TASK_ASYNC
,
7854 struct rpc_task
*task
;
7857 dprintk("NFS: %4d initiating layoutcommit call. sync %d "
7858 "lbw: %llu inode %lu\n",
7859 data
->task
.tk_pid
, sync
,
7860 data
->args
.lastbytewritten
,
7861 data
->args
.inode
->i_ino
);
7863 nfs4_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
7864 task
= rpc_run_task(&task_setup_data
);
7866 return PTR_ERR(task
);
7869 status
= nfs4_wait_for_completion_rpc_task(task
);
7872 status
= task
->tk_status
;
7873 trace_nfs4_layoutcommit(data
->args
.inode
, status
);
7875 dprintk("%s: status %d\n", __func__
, status
);
7881 * Use the state managment nfs_client cl_rpcclient, which uses krb5i (if
7882 * possible) as per RFC3530bis and RFC5661 Security Considerations sections
7885 _nfs41_proc_secinfo_no_name(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
7886 struct nfs_fsinfo
*info
,
7887 struct nfs4_secinfo_flavors
*flavors
, bool use_integrity
)
7889 struct nfs41_secinfo_no_name_args args
= {
7890 .style
= SECINFO_STYLE_CURRENT_FH
,
7892 struct nfs4_secinfo_res res
= {
7895 struct rpc_message msg
= {
7896 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SECINFO_NO_NAME
],
7900 struct rpc_clnt
*clnt
= server
->client
;
7901 struct rpc_cred
*cred
= NULL
;
7904 if (use_integrity
) {
7905 clnt
= server
->nfs_client
->cl_rpcclient
;
7906 cred
= nfs4_get_clid_cred(server
->nfs_client
);
7907 msg
.rpc_cred
= cred
;
7910 dprintk("--> %s\n", __func__
);
7911 status
= nfs4_call_sync(clnt
, server
, &msg
, &args
.seq_args
,
7913 dprintk("<-- %s status=%d\n", __func__
, status
);
7922 nfs41_proc_secinfo_no_name(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
7923 struct nfs_fsinfo
*info
, struct nfs4_secinfo_flavors
*flavors
)
7925 struct nfs4_exception exception
= { };
7928 /* first try using integrity protection */
7929 err
= -NFS4ERR_WRONGSEC
;
7931 /* try to use integrity protection with machine cred */
7932 if (_nfs4_is_integrity_protected(server
->nfs_client
))
7933 err
= _nfs41_proc_secinfo_no_name(server
, fhandle
, info
,
7937 * if unable to use integrity protection, or SECINFO with
7938 * integrity protection returns NFS4ERR_WRONGSEC (which is
7939 * disallowed by spec, but exists in deployed servers) use
7940 * the current filesystem's rpc_client and the user cred.
7942 if (err
== -NFS4ERR_WRONGSEC
)
7943 err
= _nfs41_proc_secinfo_no_name(server
, fhandle
, info
,
7948 case -NFS4ERR_WRONGSEC
:
7952 err
= nfs4_handle_exception(server
, err
, &exception
);
7954 } while (exception
.retry
);
7960 nfs41_find_root_sec(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
7961 struct nfs_fsinfo
*info
)
7965 rpc_authflavor_t flavor
= RPC_AUTH_MAXFLAVOR
;
7966 struct nfs4_secinfo_flavors
*flavors
;
7967 struct nfs4_secinfo4
*secinfo
;
7970 page
= alloc_page(GFP_KERNEL
);
7976 flavors
= page_address(page
);
7977 err
= nfs41_proc_secinfo_no_name(server
, fhandle
, info
, flavors
);
7980 * Fall back on "guess and check" method if
7981 * the server doesn't support SECINFO_NO_NAME
7983 if (err
== -NFS4ERR_WRONGSEC
|| err
== -ENOTSUPP
) {
7984 err
= nfs4_find_root_sec(server
, fhandle
, info
);
7990 for (i
= 0; i
< flavors
->num_flavors
; i
++) {
7991 secinfo
= &flavors
->flavors
[i
];
7993 switch (secinfo
->flavor
) {
7997 flavor
= rpcauth_get_pseudoflavor(secinfo
->flavor
,
7998 &secinfo
->flavor_info
);
8001 flavor
= RPC_AUTH_MAXFLAVOR
;
8005 if (!nfs_auth_info_match(&server
->auth_info
, flavor
))
8006 flavor
= RPC_AUTH_MAXFLAVOR
;
8008 if (flavor
!= RPC_AUTH_MAXFLAVOR
) {
8009 err
= nfs4_lookup_root_sec(server
, fhandle
,
8016 if (flavor
== RPC_AUTH_MAXFLAVOR
)
8027 static int _nfs41_test_stateid(struct nfs_server
*server
,
8028 nfs4_stateid
*stateid
,
8029 struct rpc_cred
*cred
)
8032 struct nfs41_test_stateid_args args
= {
8035 struct nfs41_test_stateid_res res
;
8036 struct rpc_message msg
= {
8037 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_TEST_STATEID
],
8042 struct rpc_clnt
*rpc_client
= server
->client
;
8044 nfs4_state_protect(server
->nfs_client
, NFS_SP4_MACH_CRED_STATEID
,
8047 dprintk("NFS call test_stateid %p\n", stateid
);
8048 nfs4_init_sequence(&args
.seq_args
, &res
.seq_res
, 0);
8049 nfs4_set_sequence_privileged(&args
.seq_args
);
8050 status
= nfs4_call_sync_sequence(rpc_client
, server
, &msg
,
8051 &args
.seq_args
, &res
.seq_res
);
8052 if (status
!= NFS_OK
) {
8053 dprintk("NFS reply test_stateid: failed, %d\n", status
);
8056 dprintk("NFS reply test_stateid: succeeded, %d\n", -res
.status
);
8061 * nfs41_test_stateid - perform a TEST_STATEID operation
8063 * @server: server / transport on which to perform the operation
8064 * @stateid: state ID to test
8067 * Returns NFS_OK if the server recognizes that "stateid" is valid.
8068 * Otherwise a negative NFS4ERR value is returned if the operation
8069 * failed or the state ID is not currently valid.
8071 static int nfs41_test_stateid(struct nfs_server
*server
,
8072 nfs4_stateid
*stateid
,
8073 struct rpc_cred
*cred
)
8075 struct nfs4_exception exception
= { };
8078 err
= _nfs41_test_stateid(server
, stateid
, cred
);
8079 if (err
!= -NFS4ERR_DELAY
)
8081 nfs4_handle_exception(server
, err
, &exception
);
8082 } while (exception
.retry
);
8086 struct nfs_free_stateid_data
{
8087 struct nfs_server
*server
;
8088 struct nfs41_free_stateid_args args
;
8089 struct nfs41_free_stateid_res res
;
8092 static void nfs41_free_stateid_prepare(struct rpc_task
*task
, void *calldata
)
8094 struct nfs_free_stateid_data
*data
= calldata
;
8095 nfs41_setup_sequence(nfs4_get_session(data
->server
),
8096 &data
->args
.seq_args
,
8101 static void nfs41_free_stateid_done(struct rpc_task
*task
, void *calldata
)
8103 struct nfs_free_stateid_data
*data
= calldata
;
8105 nfs41_sequence_done(task
, &data
->res
.seq_res
);
8107 switch (task
->tk_status
) {
8108 case -NFS4ERR_DELAY
:
8109 if (nfs4_async_handle_error(task
, data
->server
, NULL
) == -EAGAIN
)
8110 rpc_restart_call_prepare(task
);
8114 static void nfs41_free_stateid_release(void *calldata
)
8119 static const struct rpc_call_ops nfs41_free_stateid_ops
= {
8120 .rpc_call_prepare
= nfs41_free_stateid_prepare
,
8121 .rpc_call_done
= nfs41_free_stateid_done
,
8122 .rpc_release
= nfs41_free_stateid_release
,
8125 static struct rpc_task
*_nfs41_free_stateid(struct nfs_server
*server
,
8126 nfs4_stateid
*stateid
,
8127 struct rpc_cred
*cred
,
8130 struct rpc_message msg
= {
8131 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FREE_STATEID
],
8134 struct rpc_task_setup task_setup
= {
8135 .rpc_client
= server
->client
,
8136 .rpc_message
= &msg
,
8137 .callback_ops
= &nfs41_free_stateid_ops
,
8138 .flags
= RPC_TASK_ASYNC
,
8140 struct nfs_free_stateid_data
*data
;
8142 nfs4_state_protect(server
->nfs_client
, NFS_SP4_MACH_CRED_STATEID
,
8143 &task_setup
.rpc_client
, &msg
);
8145 dprintk("NFS call free_stateid %p\n", stateid
);
8146 data
= kmalloc(sizeof(*data
), GFP_NOFS
);
8148 return ERR_PTR(-ENOMEM
);
8149 data
->server
= server
;
8150 nfs4_stateid_copy(&data
->args
.stateid
, stateid
);
8152 task_setup
.callback_data
= data
;
8154 msg
.rpc_argp
= &data
->args
;
8155 msg
.rpc_resp
= &data
->res
;
8156 nfs4_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 0);
8158 nfs4_set_sequence_privileged(&data
->args
.seq_args
);
8160 return rpc_run_task(&task_setup
);
8164 * nfs41_free_stateid - perform a FREE_STATEID operation
8166 * @server: server / transport on which to perform the operation
8167 * @stateid: state ID to release
8170 * Returns NFS_OK if the server freed "stateid". Otherwise a
8171 * negative NFS4ERR value is returned.
8173 static int nfs41_free_stateid(struct nfs_server
*server
,
8174 nfs4_stateid
*stateid
,
8175 struct rpc_cred
*cred
)
8177 struct rpc_task
*task
;
8180 task
= _nfs41_free_stateid(server
, stateid
, cred
, true);
8182 return PTR_ERR(task
);
8183 ret
= rpc_wait_for_completion_task(task
);
8185 ret
= task
->tk_status
;
8190 static int nfs41_free_lock_state(struct nfs_server
*server
, struct nfs4_lock_state
*lsp
)
8192 struct rpc_task
*task
;
8193 struct rpc_cred
*cred
= lsp
->ls_state
->owner
->so_cred
;
8195 task
= _nfs41_free_stateid(server
, &lsp
->ls_stateid
, cred
, false);
8196 nfs4_free_lock_state(server
, lsp
);
8198 return PTR_ERR(task
);
8203 static bool nfs41_match_stateid(const nfs4_stateid
*s1
,
8204 const nfs4_stateid
*s2
)
8206 if (memcmp(s1
->other
, s2
->other
, sizeof(s1
->other
)) != 0)
8209 if (s1
->seqid
== s2
->seqid
)
8211 if (s1
->seqid
== 0 || s2
->seqid
== 0)
8217 #endif /* CONFIG_NFS_V4_1 */
8219 static bool nfs4_match_stateid(const nfs4_stateid
*s1
,
8220 const nfs4_stateid
*s2
)
8222 return nfs4_stateid_match(s1
, s2
);
8226 static const struct nfs4_state_recovery_ops nfs40_reboot_recovery_ops
= {
8227 .owner_flag_bit
= NFS_OWNER_RECLAIM_REBOOT
,
8228 .state_flag_bit
= NFS_STATE_RECLAIM_REBOOT
,
8229 .recover_open
= nfs4_open_reclaim
,
8230 .recover_lock
= nfs4_lock_reclaim
,
8231 .establish_clid
= nfs4_init_clientid
,
8232 .detect_trunking
= nfs40_discover_server_trunking
,
8235 #if defined(CONFIG_NFS_V4_1)
8236 static const struct nfs4_state_recovery_ops nfs41_reboot_recovery_ops
= {
8237 .owner_flag_bit
= NFS_OWNER_RECLAIM_REBOOT
,
8238 .state_flag_bit
= NFS_STATE_RECLAIM_REBOOT
,
8239 .recover_open
= nfs4_open_reclaim
,
8240 .recover_lock
= nfs4_lock_reclaim
,
8241 .establish_clid
= nfs41_init_clientid
,
8242 .reclaim_complete
= nfs41_proc_reclaim_complete
,
8243 .detect_trunking
= nfs41_discover_server_trunking
,
8245 #endif /* CONFIG_NFS_V4_1 */
8247 static const struct nfs4_state_recovery_ops nfs40_nograce_recovery_ops
= {
8248 .owner_flag_bit
= NFS_OWNER_RECLAIM_NOGRACE
,
8249 .state_flag_bit
= NFS_STATE_RECLAIM_NOGRACE
,
8250 .recover_open
= nfs4_open_expired
,
8251 .recover_lock
= nfs4_lock_expired
,
8252 .establish_clid
= nfs4_init_clientid
,
8255 #if defined(CONFIG_NFS_V4_1)
8256 static const struct nfs4_state_recovery_ops nfs41_nograce_recovery_ops
= {
8257 .owner_flag_bit
= NFS_OWNER_RECLAIM_NOGRACE
,
8258 .state_flag_bit
= NFS_STATE_RECLAIM_NOGRACE
,
8259 .recover_open
= nfs41_open_expired
,
8260 .recover_lock
= nfs41_lock_expired
,
8261 .establish_clid
= nfs41_init_clientid
,
8263 #endif /* CONFIG_NFS_V4_1 */
8265 static const struct nfs4_state_maintenance_ops nfs40_state_renewal_ops
= {
8266 .sched_state_renewal
= nfs4_proc_async_renew
,
8267 .get_state_renewal_cred_locked
= nfs4_get_renew_cred_locked
,
8268 .renew_lease
= nfs4_proc_renew
,
8271 #if defined(CONFIG_NFS_V4_1)
8272 static const struct nfs4_state_maintenance_ops nfs41_state_renewal_ops
= {
8273 .sched_state_renewal
= nfs41_proc_async_sequence
,
8274 .get_state_renewal_cred_locked
= nfs4_get_machine_cred_locked
,
8275 .renew_lease
= nfs4_proc_sequence
,
8279 static const struct nfs4_mig_recovery_ops nfs40_mig_recovery_ops
= {
8280 .get_locations
= _nfs40_proc_get_locations
,
8281 .fsid_present
= _nfs40_proc_fsid_present
,
8284 #if defined(CONFIG_NFS_V4_1)
8285 static const struct nfs4_mig_recovery_ops nfs41_mig_recovery_ops
= {
8286 .get_locations
= _nfs41_proc_get_locations
,
8287 .fsid_present
= _nfs41_proc_fsid_present
,
8289 #endif /* CONFIG_NFS_V4_1 */
8291 static const struct nfs4_minor_version_ops nfs_v4_0_minor_ops
= {
8293 .init_caps
= NFS_CAP_READDIRPLUS
8294 | NFS_CAP_ATOMIC_OPEN
8295 | NFS_CAP_CHANGE_ATTR
8296 | NFS_CAP_POSIX_LOCK
,
8297 .init_client
= nfs40_init_client
,
8298 .shutdown_client
= nfs40_shutdown_client
,
8299 .match_stateid
= nfs4_match_stateid
,
8300 .find_root_sec
= nfs4_find_root_sec
,
8301 .free_lock_state
= nfs4_release_lockowner
,
8302 .call_sync_ops
= &nfs40_call_sync_ops
,
8303 .reboot_recovery_ops
= &nfs40_reboot_recovery_ops
,
8304 .nograce_recovery_ops
= &nfs40_nograce_recovery_ops
,
8305 .state_renewal_ops
= &nfs40_state_renewal_ops
,
8306 .mig_recovery_ops
= &nfs40_mig_recovery_ops
,
8309 #if defined(CONFIG_NFS_V4_1)
8310 static const struct nfs4_minor_version_ops nfs_v4_1_minor_ops
= {
8312 .init_caps
= NFS_CAP_READDIRPLUS
8313 | NFS_CAP_ATOMIC_OPEN
8314 | NFS_CAP_CHANGE_ATTR
8315 | NFS_CAP_POSIX_LOCK
8316 | NFS_CAP_STATEID_NFSV41
8317 | NFS_CAP_ATOMIC_OPEN_V1
,
8318 .init_client
= nfs41_init_client
,
8319 .shutdown_client
= nfs41_shutdown_client
,
8320 .match_stateid
= nfs41_match_stateid
,
8321 .find_root_sec
= nfs41_find_root_sec
,
8322 .free_lock_state
= nfs41_free_lock_state
,
8323 .call_sync_ops
= &nfs41_call_sync_ops
,
8324 .reboot_recovery_ops
= &nfs41_reboot_recovery_ops
,
8325 .nograce_recovery_ops
= &nfs41_nograce_recovery_ops
,
8326 .state_renewal_ops
= &nfs41_state_renewal_ops
,
8327 .mig_recovery_ops
= &nfs41_mig_recovery_ops
,
8331 #if defined(CONFIG_NFS_V4_2)
8332 static const struct nfs4_minor_version_ops nfs_v4_2_minor_ops
= {
8334 .init_caps
= NFS_CAP_READDIRPLUS
8335 | NFS_CAP_ATOMIC_OPEN
8336 | NFS_CAP_CHANGE_ATTR
8337 | NFS_CAP_POSIX_LOCK
8338 | NFS_CAP_STATEID_NFSV41
8339 | NFS_CAP_ATOMIC_OPEN_V1
,
8340 .init_client
= nfs41_init_client
,
8341 .shutdown_client
= nfs41_shutdown_client
,
8342 .match_stateid
= nfs41_match_stateid
,
8343 .find_root_sec
= nfs41_find_root_sec
,
8344 .free_lock_state
= nfs41_free_lock_state
,
8345 .call_sync_ops
= &nfs41_call_sync_ops
,
8346 .reboot_recovery_ops
= &nfs41_reboot_recovery_ops
,
8347 .nograce_recovery_ops
= &nfs41_nograce_recovery_ops
,
8348 .state_renewal_ops
= &nfs41_state_renewal_ops
,
8352 const struct nfs4_minor_version_ops
*nfs_v4_minor_ops
[] = {
8353 [0] = &nfs_v4_0_minor_ops
,
8354 #if defined(CONFIG_NFS_V4_1)
8355 [1] = &nfs_v4_1_minor_ops
,
8357 #if defined(CONFIG_NFS_V4_2)
8358 [2] = &nfs_v4_2_minor_ops
,
8362 static const struct inode_operations nfs4_dir_inode_operations
= {
8363 .create
= nfs_create
,
8364 .lookup
= nfs_lookup
,
8365 .atomic_open
= nfs_atomic_open
,
8367 .unlink
= nfs_unlink
,
8368 .symlink
= nfs_symlink
,
8372 .rename
= nfs_rename
,
8373 .permission
= nfs_permission
,
8374 .getattr
= nfs_getattr
,
8375 .setattr
= nfs_setattr
,
8376 .getxattr
= generic_getxattr
,
8377 .setxattr
= generic_setxattr
,
8378 .listxattr
= generic_listxattr
,
8379 .removexattr
= generic_removexattr
,
8382 static const struct inode_operations nfs4_file_inode_operations
= {
8383 .permission
= nfs_permission
,
8384 .getattr
= nfs_getattr
,
8385 .setattr
= nfs_setattr
,
8386 .getxattr
= generic_getxattr
,
8387 .setxattr
= generic_setxattr
,
8388 .listxattr
= generic_listxattr
,
8389 .removexattr
= generic_removexattr
,
8392 const struct nfs_rpc_ops nfs_v4_clientops
= {
8393 .version
= 4, /* protocol version */
8394 .dentry_ops
= &nfs4_dentry_operations
,
8395 .dir_inode_ops
= &nfs4_dir_inode_operations
,
8396 .file_inode_ops
= &nfs4_file_inode_operations
,
8397 .file_ops
= &nfs4_file_operations
,
8398 .getroot
= nfs4_proc_get_root
,
8399 .submount
= nfs4_submount
,
8400 .try_mount
= nfs4_try_mount
,
8401 .getattr
= nfs4_proc_getattr
,
8402 .setattr
= nfs4_proc_setattr
,
8403 .lookup
= nfs4_proc_lookup
,
8404 .access
= nfs4_proc_access
,
8405 .readlink
= nfs4_proc_readlink
,
8406 .create
= nfs4_proc_create
,
8407 .remove
= nfs4_proc_remove
,
8408 .unlink_setup
= nfs4_proc_unlink_setup
,
8409 .unlink_rpc_prepare
= nfs4_proc_unlink_rpc_prepare
,
8410 .unlink_done
= nfs4_proc_unlink_done
,
8411 .rename
= nfs4_proc_rename
,
8412 .rename_setup
= nfs4_proc_rename_setup
,
8413 .rename_rpc_prepare
= nfs4_proc_rename_rpc_prepare
,
8414 .rename_done
= nfs4_proc_rename_done
,
8415 .link
= nfs4_proc_link
,
8416 .symlink
= nfs4_proc_symlink
,
8417 .mkdir
= nfs4_proc_mkdir
,
8418 .rmdir
= nfs4_proc_remove
,
8419 .readdir
= nfs4_proc_readdir
,
8420 .mknod
= nfs4_proc_mknod
,
8421 .statfs
= nfs4_proc_statfs
,
8422 .fsinfo
= nfs4_proc_fsinfo
,
8423 .pathconf
= nfs4_proc_pathconf
,
8424 .set_capabilities
= nfs4_server_capabilities
,
8425 .decode_dirent
= nfs4_decode_dirent
,
8426 .read_setup
= nfs4_proc_read_setup
,
8427 .read_pageio_init
= pnfs_pageio_init_read
,
8428 .read_rpc_prepare
= nfs4_proc_read_rpc_prepare
,
8429 .read_done
= nfs4_read_done
,
8430 .write_setup
= nfs4_proc_write_setup
,
8431 .write_pageio_init
= pnfs_pageio_init_write
,
8432 .write_rpc_prepare
= nfs4_proc_write_rpc_prepare
,
8433 .write_done
= nfs4_write_done
,
8434 .commit_setup
= nfs4_proc_commit_setup
,
8435 .commit_rpc_prepare
= nfs4_proc_commit_rpc_prepare
,
8436 .commit_done
= nfs4_commit_done
,
8437 .lock
= nfs4_proc_lock
,
8438 .clear_acl_cache
= nfs4_zap_acl_attr
,
8439 .close_context
= nfs4_close_context
,
8440 .open_context
= nfs4_atomic_open
,
8441 .have_delegation
= nfs4_have_delegation
,
8442 .return_delegation
= nfs4_inode_return_delegation
,
8443 .alloc_client
= nfs4_alloc_client
,
8444 .init_client
= nfs4_init_client
,
8445 .free_client
= nfs4_free_client
,
8446 .create_server
= nfs4_create_server
,
8447 .clone_server
= nfs_clone_server
,
8450 static const struct xattr_handler nfs4_xattr_nfs4_acl_handler
= {
8451 .prefix
= XATTR_NAME_NFSV4_ACL
,
8452 .list
= nfs4_xattr_list_nfs4_acl
,
8453 .get
= nfs4_xattr_get_nfs4_acl
,
8454 .set
= nfs4_xattr_set_nfs4_acl
,
8457 const struct xattr_handler
*nfs4_xattr_handlers
[] = {
8458 &nfs4_xattr_nfs4_acl_handler
,
8459 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
8460 &nfs4_xattr_nfs4_label_handler
,