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
);
1071 kfree(p
->f_attr
.mdsthreshold
);
1075 static void nfs4_opendata_put(struct nfs4_opendata
*p
)
1078 kref_put(&p
->kref
, nfs4_opendata_free
);
1081 static int nfs4_wait_for_completion_rpc_task(struct rpc_task
*task
)
1085 ret
= rpc_wait_for_completion_task(task
);
1089 static int can_open_cached(struct nfs4_state
*state
, fmode_t mode
, int open_mode
)
1093 if (open_mode
& (O_EXCL
|O_TRUNC
))
1095 switch (mode
& (FMODE_READ
|FMODE_WRITE
)) {
1097 ret
|= test_bit(NFS_O_RDONLY_STATE
, &state
->flags
) != 0
1098 && state
->n_rdonly
!= 0;
1101 ret
|= test_bit(NFS_O_WRONLY_STATE
, &state
->flags
) != 0
1102 && state
->n_wronly
!= 0;
1104 case FMODE_READ
|FMODE_WRITE
:
1105 ret
|= test_bit(NFS_O_RDWR_STATE
, &state
->flags
) != 0
1106 && state
->n_rdwr
!= 0;
1112 static int can_open_delegated(struct nfs_delegation
*delegation
, fmode_t fmode
)
1114 if (delegation
== NULL
)
1116 if ((delegation
->type
& fmode
) != fmode
)
1118 if (test_bit(NFS_DELEGATION_NEED_RECLAIM
, &delegation
->flags
))
1120 if (test_bit(NFS_DELEGATION_RETURNING
, &delegation
->flags
))
1122 nfs_mark_delegation_referenced(delegation
);
1126 static void update_open_stateflags(struct nfs4_state
*state
, fmode_t fmode
)
1135 case FMODE_READ
|FMODE_WRITE
:
1138 nfs4_state_set_mode_locked(state
, state
->state
| fmode
);
1141 static void nfs_test_and_clear_all_open_stateid(struct nfs4_state
*state
)
1143 struct nfs_client
*clp
= state
->owner
->so_server
->nfs_client
;
1144 bool need_recover
= false;
1146 if (test_and_clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
) && state
->n_rdonly
)
1147 need_recover
= true;
1148 if (test_and_clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
) && state
->n_wronly
)
1149 need_recover
= true;
1150 if (test_and_clear_bit(NFS_O_RDWR_STATE
, &state
->flags
) && state
->n_rdwr
)
1151 need_recover
= true;
1153 nfs4_state_mark_reclaim_nograce(clp
, state
);
1156 static bool nfs_need_update_open_stateid(struct nfs4_state
*state
,
1157 nfs4_stateid
*stateid
)
1159 if (test_and_set_bit(NFS_OPEN_STATE
, &state
->flags
) == 0)
1161 if (!nfs4_stateid_match_other(stateid
, &state
->open_stateid
)) {
1162 nfs_test_and_clear_all_open_stateid(state
);
1165 if (nfs4_stateid_is_newer(stateid
, &state
->open_stateid
))
1170 static void nfs_clear_open_stateid_locked(struct nfs4_state
*state
,
1171 nfs4_stateid
*stateid
, fmode_t fmode
)
1173 clear_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1174 switch (fmode
& (FMODE_READ
|FMODE_WRITE
)) {
1176 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1179 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1182 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1183 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1184 clear_bit(NFS_OPEN_STATE
, &state
->flags
);
1186 if (stateid
== NULL
)
1188 if (!nfs_need_update_open_stateid(state
, stateid
))
1190 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0)
1191 nfs4_stateid_copy(&state
->stateid
, stateid
);
1192 nfs4_stateid_copy(&state
->open_stateid
, stateid
);
1195 static void nfs_clear_open_stateid(struct nfs4_state
*state
, nfs4_stateid
*stateid
, fmode_t fmode
)
1197 write_seqlock(&state
->seqlock
);
1198 nfs_clear_open_stateid_locked(state
, stateid
, fmode
);
1199 write_sequnlock(&state
->seqlock
);
1200 if (test_bit(NFS_STATE_RECLAIM_NOGRACE
, &state
->flags
))
1201 nfs4_schedule_state_manager(state
->owner
->so_server
->nfs_client
);
1204 static void nfs_set_open_stateid_locked(struct nfs4_state
*state
, nfs4_stateid
*stateid
, fmode_t fmode
)
1208 set_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1211 set_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1213 case FMODE_READ
|FMODE_WRITE
:
1214 set_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1216 if (!nfs_need_update_open_stateid(state
, stateid
))
1218 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0)
1219 nfs4_stateid_copy(&state
->stateid
, stateid
);
1220 nfs4_stateid_copy(&state
->open_stateid
, stateid
);
1223 static void __update_open_stateid(struct nfs4_state
*state
, nfs4_stateid
*open_stateid
, const nfs4_stateid
*deleg_stateid
, fmode_t fmode
)
1226 * Protect the call to nfs4_state_set_mode_locked and
1227 * serialise the stateid update
1229 write_seqlock(&state
->seqlock
);
1230 if (deleg_stateid
!= NULL
) {
1231 nfs4_stateid_copy(&state
->stateid
, deleg_stateid
);
1232 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1234 if (open_stateid
!= NULL
)
1235 nfs_set_open_stateid_locked(state
, open_stateid
, fmode
);
1236 write_sequnlock(&state
->seqlock
);
1237 spin_lock(&state
->owner
->so_lock
);
1238 update_open_stateflags(state
, fmode
);
1239 spin_unlock(&state
->owner
->so_lock
);
1242 static int update_open_stateid(struct nfs4_state
*state
, nfs4_stateid
*open_stateid
, nfs4_stateid
*delegation
, fmode_t fmode
)
1244 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
1245 struct nfs_delegation
*deleg_cur
;
1248 fmode
&= (FMODE_READ
|FMODE_WRITE
);
1251 deleg_cur
= rcu_dereference(nfsi
->delegation
);
1252 if (deleg_cur
== NULL
)
1255 spin_lock(&deleg_cur
->lock
);
1256 if (rcu_dereference(nfsi
->delegation
) != deleg_cur
||
1257 test_bit(NFS_DELEGATION_RETURNING
, &deleg_cur
->flags
) ||
1258 (deleg_cur
->type
& fmode
) != fmode
)
1259 goto no_delegation_unlock
;
1261 if (delegation
== NULL
)
1262 delegation
= &deleg_cur
->stateid
;
1263 else if (!nfs4_stateid_match(&deleg_cur
->stateid
, delegation
))
1264 goto no_delegation_unlock
;
1266 nfs_mark_delegation_referenced(deleg_cur
);
1267 __update_open_stateid(state
, open_stateid
, &deleg_cur
->stateid
, fmode
);
1269 no_delegation_unlock
:
1270 spin_unlock(&deleg_cur
->lock
);
1274 if (!ret
&& open_stateid
!= NULL
) {
1275 __update_open_stateid(state
, open_stateid
, NULL
, fmode
);
1278 if (test_bit(NFS_STATE_RECLAIM_NOGRACE
, &state
->flags
))
1279 nfs4_schedule_state_manager(state
->owner
->so_server
->nfs_client
);
1285 static void nfs4_return_incompatible_delegation(struct inode
*inode
, fmode_t fmode
)
1287 struct nfs_delegation
*delegation
;
1290 delegation
= rcu_dereference(NFS_I(inode
)->delegation
);
1291 if (delegation
== NULL
|| (delegation
->type
& fmode
) == fmode
) {
1296 nfs4_inode_return_delegation(inode
);
1299 static struct nfs4_state
*nfs4_try_open_cached(struct nfs4_opendata
*opendata
)
1301 struct nfs4_state
*state
= opendata
->state
;
1302 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
1303 struct nfs_delegation
*delegation
;
1304 int open_mode
= opendata
->o_arg
.open_flags
;
1305 fmode_t fmode
= opendata
->o_arg
.fmode
;
1306 nfs4_stateid stateid
;
1310 if (can_open_cached(state
, fmode
, open_mode
)) {
1311 spin_lock(&state
->owner
->so_lock
);
1312 if (can_open_cached(state
, fmode
, open_mode
)) {
1313 update_open_stateflags(state
, fmode
);
1314 spin_unlock(&state
->owner
->so_lock
);
1315 goto out_return_state
;
1317 spin_unlock(&state
->owner
->so_lock
);
1320 delegation
= rcu_dereference(nfsi
->delegation
);
1321 if (!can_open_delegated(delegation
, fmode
)) {
1325 /* Save the delegation */
1326 nfs4_stateid_copy(&stateid
, &delegation
->stateid
);
1328 nfs_release_seqid(opendata
->o_arg
.seqid
);
1329 if (!opendata
->is_recover
) {
1330 ret
= nfs_may_open(state
->inode
, state
->owner
->so_cred
, open_mode
);
1336 /* Try to update the stateid using the delegation */
1337 if (update_open_stateid(state
, NULL
, &stateid
, fmode
))
1338 goto out_return_state
;
1341 return ERR_PTR(ret
);
1343 atomic_inc(&state
->count
);
1348 nfs4_opendata_check_deleg(struct nfs4_opendata
*data
, struct nfs4_state
*state
)
1350 struct nfs_client
*clp
= NFS_SERVER(state
->inode
)->nfs_client
;
1351 struct nfs_delegation
*delegation
;
1352 int delegation_flags
= 0;
1355 delegation
= rcu_dereference(NFS_I(state
->inode
)->delegation
);
1357 delegation_flags
= delegation
->flags
;
1359 if (data
->o_arg
.claim
== NFS4_OPEN_CLAIM_DELEGATE_CUR
) {
1360 pr_err_ratelimited("NFS: Broken NFSv4 server %s is "
1361 "returning a delegation for "
1362 "OPEN(CLAIM_DELEGATE_CUR)\n",
1364 } else if ((delegation_flags
& 1UL<<NFS_DELEGATION_NEED_RECLAIM
) == 0)
1365 nfs_inode_set_delegation(state
->inode
,
1366 data
->owner
->so_cred
,
1369 nfs_inode_reclaim_delegation(state
->inode
,
1370 data
->owner
->so_cred
,
1375 * Check the inode attributes against the CLAIM_PREVIOUS returned attributes
1376 * and update the nfs4_state.
1378 static struct nfs4_state
*
1379 _nfs4_opendata_reclaim_to_nfs4_state(struct nfs4_opendata
*data
)
1381 struct inode
*inode
= data
->state
->inode
;
1382 struct nfs4_state
*state
= data
->state
;
1385 if (!data
->rpc_done
) {
1386 if (data
->rpc_status
) {
1387 ret
= data
->rpc_status
;
1390 /* cached opens have already been processed */
1394 ret
= nfs_refresh_inode(inode
, &data
->f_attr
);
1398 if (data
->o_res
.delegation_type
!= 0)
1399 nfs4_opendata_check_deleg(data
, state
);
1401 update_open_stateid(state
, &data
->o_res
.stateid
, NULL
,
1403 atomic_inc(&state
->count
);
1407 return ERR_PTR(ret
);
1411 static struct nfs4_state
*
1412 _nfs4_opendata_to_nfs4_state(struct nfs4_opendata
*data
)
1414 struct inode
*inode
;
1415 struct nfs4_state
*state
= NULL
;
1418 if (!data
->rpc_done
) {
1419 state
= nfs4_try_open_cached(data
);
1424 if (!(data
->f_attr
.valid
& NFS_ATTR_FATTR
))
1426 inode
= nfs_fhget(data
->dir
->d_sb
, &data
->o_res
.fh
, &data
->f_attr
, data
->f_label
);
1427 ret
= PTR_ERR(inode
);
1431 state
= nfs4_get_open_state(inode
, data
->owner
);
1434 if (data
->o_res
.delegation_type
!= 0)
1435 nfs4_opendata_check_deleg(data
, state
);
1436 update_open_stateid(state
, &data
->o_res
.stateid
, NULL
,
1440 nfs_release_seqid(data
->o_arg
.seqid
);
1445 return ERR_PTR(ret
);
1448 static struct nfs4_state
*
1449 nfs4_opendata_to_nfs4_state(struct nfs4_opendata
*data
)
1451 if (data
->o_arg
.claim
== NFS4_OPEN_CLAIM_PREVIOUS
)
1452 return _nfs4_opendata_reclaim_to_nfs4_state(data
);
1453 return _nfs4_opendata_to_nfs4_state(data
);
1456 static struct nfs_open_context
*nfs4_state_find_open_context(struct nfs4_state
*state
)
1458 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
1459 struct nfs_open_context
*ctx
;
1461 spin_lock(&state
->inode
->i_lock
);
1462 list_for_each_entry(ctx
, &nfsi
->open_files
, list
) {
1463 if (ctx
->state
!= state
)
1465 get_nfs_open_context(ctx
);
1466 spin_unlock(&state
->inode
->i_lock
);
1469 spin_unlock(&state
->inode
->i_lock
);
1470 return ERR_PTR(-ENOENT
);
1473 static struct nfs4_opendata
*nfs4_open_recoverdata_alloc(struct nfs_open_context
*ctx
,
1474 struct nfs4_state
*state
, enum open_claim_type4 claim
)
1476 struct nfs4_opendata
*opendata
;
1478 opendata
= nfs4_opendata_alloc(ctx
->dentry
, state
->owner
, 0, 0,
1479 NULL
, NULL
, claim
, GFP_NOFS
);
1480 if (opendata
== NULL
)
1481 return ERR_PTR(-ENOMEM
);
1482 opendata
->state
= state
;
1483 atomic_inc(&state
->count
);
1487 static int nfs4_open_recover_helper(struct nfs4_opendata
*opendata
, fmode_t fmode
, struct nfs4_state
**res
)
1489 struct nfs4_state
*newstate
;
1492 opendata
->o_arg
.open_flags
= 0;
1493 opendata
->o_arg
.fmode
= fmode
;
1494 memset(&opendata
->o_res
, 0, sizeof(opendata
->o_res
));
1495 memset(&opendata
->c_res
, 0, sizeof(opendata
->c_res
));
1496 nfs4_init_opendata_res(opendata
);
1497 ret
= _nfs4_recover_proc_open(opendata
);
1500 newstate
= nfs4_opendata_to_nfs4_state(opendata
);
1501 if (IS_ERR(newstate
))
1502 return PTR_ERR(newstate
);
1503 nfs4_close_state(newstate
, fmode
);
1508 static int nfs4_open_recover(struct nfs4_opendata
*opendata
, struct nfs4_state
*state
)
1510 struct nfs4_state
*newstate
;
1513 /* Don't trigger recovery in nfs_test_and_clear_all_open_stateid */
1514 clear_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1515 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1516 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1517 /* memory barrier prior to reading state->n_* */
1518 clear_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1519 clear_bit(NFS_OPEN_STATE
, &state
->flags
);
1521 if (state
->n_rdwr
!= 0) {
1522 ret
= nfs4_open_recover_helper(opendata
, FMODE_READ
|FMODE_WRITE
, &newstate
);
1525 if (newstate
!= state
)
1528 if (state
->n_wronly
!= 0) {
1529 ret
= nfs4_open_recover_helper(opendata
, FMODE_WRITE
, &newstate
);
1532 if (newstate
!= state
)
1535 if (state
->n_rdonly
!= 0) {
1536 ret
= nfs4_open_recover_helper(opendata
, FMODE_READ
, &newstate
);
1539 if (newstate
!= state
)
1543 * We may have performed cached opens for all three recoveries.
1544 * Check if we need to update the current stateid.
1546 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0 &&
1547 !nfs4_stateid_match(&state
->stateid
, &state
->open_stateid
)) {
1548 write_seqlock(&state
->seqlock
);
1549 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0)
1550 nfs4_stateid_copy(&state
->stateid
, &state
->open_stateid
);
1551 write_sequnlock(&state
->seqlock
);
1558 * reclaim state on the server after a reboot.
1560 static int _nfs4_do_open_reclaim(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1562 struct nfs_delegation
*delegation
;
1563 struct nfs4_opendata
*opendata
;
1564 fmode_t delegation_type
= 0;
1567 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
,
1568 NFS4_OPEN_CLAIM_PREVIOUS
);
1569 if (IS_ERR(opendata
))
1570 return PTR_ERR(opendata
);
1572 delegation
= rcu_dereference(NFS_I(state
->inode
)->delegation
);
1573 if (delegation
!= NULL
&& test_bit(NFS_DELEGATION_NEED_RECLAIM
, &delegation
->flags
) != 0)
1574 delegation_type
= delegation
->type
;
1576 opendata
->o_arg
.u
.delegation_type
= delegation_type
;
1577 status
= nfs4_open_recover(opendata
, state
);
1578 nfs4_opendata_put(opendata
);
1582 static int nfs4_do_open_reclaim(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1584 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1585 struct nfs4_exception exception
= { };
1588 err
= _nfs4_do_open_reclaim(ctx
, state
);
1589 trace_nfs4_open_reclaim(ctx
, 0, err
);
1590 if (nfs4_clear_cap_atomic_open_v1(server
, err
, &exception
))
1592 if (err
!= -NFS4ERR_DELAY
)
1594 nfs4_handle_exception(server
, err
, &exception
);
1595 } while (exception
.retry
);
1599 static int nfs4_open_reclaim(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
1601 struct nfs_open_context
*ctx
;
1604 ctx
= nfs4_state_find_open_context(state
);
1607 ret
= nfs4_do_open_reclaim(ctx
, state
);
1608 put_nfs_open_context(ctx
);
1612 static int nfs4_handle_delegation_recall_error(struct nfs_server
*server
, struct nfs4_state
*state
, const nfs4_stateid
*stateid
, int err
)
1616 printk(KERN_ERR
"NFS: %s: unhandled error "
1617 "%d.\n", __func__
, err
);
1622 case -NFS4ERR_BADSESSION
:
1623 case -NFS4ERR_BADSLOT
:
1624 case -NFS4ERR_BAD_HIGH_SLOT
:
1625 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
1626 case -NFS4ERR_DEADSESSION
:
1627 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1628 nfs4_schedule_session_recovery(server
->nfs_client
->cl_session
, err
);
1630 case -NFS4ERR_STALE_CLIENTID
:
1631 case -NFS4ERR_STALE_STATEID
:
1632 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1633 case -NFS4ERR_EXPIRED
:
1634 /* Don't recall a delegation if it was lost */
1635 nfs4_schedule_lease_recovery(server
->nfs_client
);
1637 case -NFS4ERR_MOVED
:
1638 nfs4_schedule_migration_recovery(server
);
1640 case -NFS4ERR_LEASE_MOVED
:
1641 nfs4_schedule_lease_moved_recovery(server
->nfs_client
);
1643 case -NFS4ERR_DELEG_REVOKED
:
1644 case -NFS4ERR_ADMIN_REVOKED
:
1645 case -NFS4ERR_BAD_STATEID
:
1646 case -NFS4ERR_OPENMODE
:
1647 nfs_inode_find_state_and_recover(state
->inode
,
1649 nfs4_schedule_stateid_recovery(server
, state
);
1651 case -NFS4ERR_DELAY
:
1652 case -NFS4ERR_GRACE
:
1653 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1657 case -NFS4ERR_DENIED
:
1658 /* kill_proc(fl->fl_pid, SIGLOST, 1); */
1664 int nfs4_open_delegation_recall(struct nfs_open_context
*ctx
, struct nfs4_state
*state
, const nfs4_stateid
*stateid
)
1666 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1667 struct nfs4_opendata
*opendata
;
1670 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
,
1671 NFS4_OPEN_CLAIM_DELEG_CUR_FH
);
1672 if (IS_ERR(opendata
))
1673 return PTR_ERR(opendata
);
1674 nfs4_stateid_copy(&opendata
->o_arg
.u
.delegation
, stateid
);
1675 err
= nfs4_open_recover(opendata
, state
);
1676 nfs4_opendata_put(opendata
);
1677 return nfs4_handle_delegation_recall_error(server
, state
, stateid
, err
);
1680 static void nfs4_open_confirm_prepare(struct rpc_task
*task
, void *calldata
)
1682 struct nfs4_opendata
*data
= calldata
;
1684 nfs40_setup_sequence(data
->o_arg
.server
, &data
->c_arg
.seq_args
,
1685 &data
->c_res
.seq_res
, task
);
1688 static void nfs4_open_confirm_done(struct rpc_task
*task
, void *calldata
)
1690 struct nfs4_opendata
*data
= calldata
;
1692 nfs40_sequence_done(task
, &data
->c_res
.seq_res
);
1694 data
->rpc_status
= task
->tk_status
;
1695 if (data
->rpc_status
== 0) {
1696 nfs4_stateid_copy(&data
->o_res
.stateid
, &data
->c_res
.stateid
);
1697 nfs_confirm_seqid(&data
->owner
->so_seqid
, 0);
1698 renew_lease(data
->o_res
.server
, data
->timestamp
);
1703 static void nfs4_open_confirm_release(void *calldata
)
1705 struct nfs4_opendata
*data
= calldata
;
1706 struct nfs4_state
*state
= NULL
;
1708 /* If this request hasn't been cancelled, do nothing */
1709 if (data
->cancelled
== 0)
1711 /* In case of error, no cleanup! */
1712 if (!data
->rpc_done
)
1714 state
= nfs4_opendata_to_nfs4_state(data
);
1716 nfs4_close_state(state
, data
->o_arg
.fmode
);
1718 nfs4_opendata_put(data
);
1721 static const struct rpc_call_ops nfs4_open_confirm_ops
= {
1722 .rpc_call_prepare
= nfs4_open_confirm_prepare
,
1723 .rpc_call_done
= nfs4_open_confirm_done
,
1724 .rpc_release
= nfs4_open_confirm_release
,
1728 * Note: On error, nfs4_proc_open_confirm will free the struct nfs4_opendata
1730 static int _nfs4_proc_open_confirm(struct nfs4_opendata
*data
)
1732 struct nfs_server
*server
= NFS_SERVER(data
->dir
->d_inode
);
1733 struct rpc_task
*task
;
1734 struct rpc_message msg
= {
1735 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_CONFIRM
],
1736 .rpc_argp
= &data
->c_arg
,
1737 .rpc_resp
= &data
->c_res
,
1738 .rpc_cred
= data
->owner
->so_cred
,
1740 struct rpc_task_setup task_setup_data
= {
1741 .rpc_client
= server
->client
,
1742 .rpc_message
= &msg
,
1743 .callback_ops
= &nfs4_open_confirm_ops
,
1744 .callback_data
= data
,
1745 .workqueue
= nfsiod_workqueue
,
1746 .flags
= RPC_TASK_ASYNC
,
1750 nfs4_init_sequence(&data
->c_arg
.seq_args
, &data
->c_res
.seq_res
, 1);
1751 kref_get(&data
->kref
);
1753 data
->rpc_status
= 0;
1754 data
->timestamp
= jiffies
;
1755 task
= rpc_run_task(&task_setup_data
);
1757 return PTR_ERR(task
);
1758 status
= nfs4_wait_for_completion_rpc_task(task
);
1760 data
->cancelled
= 1;
1763 status
= data
->rpc_status
;
1768 static void nfs4_open_prepare(struct rpc_task
*task
, void *calldata
)
1770 struct nfs4_opendata
*data
= calldata
;
1771 struct nfs4_state_owner
*sp
= data
->owner
;
1772 struct nfs_client
*clp
= sp
->so_server
->nfs_client
;
1774 if (nfs_wait_on_sequence(data
->o_arg
.seqid
, task
) != 0)
1777 * Check if we still need to send an OPEN call, or if we can use
1778 * a delegation instead.
1780 if (data
->state
!= NULL
) {
1781 struct nfs_delegation
*delegation
;
1783 if (can_open_cached(data
->state
, data
->o_arg
.fmode
, data
->o_arg
.open_flags
))
1786 delegation
= rcu_dereference(NFS_I(data
->state
->inode
)->delegation
);
1787 if (data
->o_arg
.claim
!= NFS4_OPEN_CLAIM_DELEGATE_CUR
&&
1788 data
->o_arg
.claim
!= NFS4_OPEN_CLAIM_DELEG_CUR_FH
&&
1789 can_open_delegated(delegation
, data
->o_arg
.fmode
))
1790 goto unlock_no_action
;
1793 /* Update client id. */
1794 data
->o_arg
.clientid
= clp
->cl_clientid
;
1795 switch (data
->o_arg
.claim
) {
1796 case NFS4_OPEN_CLAIM_PREVIOUS
:
1797 case NFS4_OPEN_CLAIM_DELEG_CUR_FH
:
1798 case NFS4_OPEN_CLAIM_DELEG_PREV_FH
:
1799 data
->o_arg
.open_bitmap
= &nfs4_open_noattr_bitmap
[0];
1800 case NFS4_OPEN_CLAIM_FH
:
1801 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_NOATTR
];
1802 nfs_copy_fh(&data
->o_res
.fh
, data
->o_arg
.fh
);
1804 data
->timestamp
= jiffies
;
1805 if (nfs4_setup_sequence(data
->o_arg
.server
,
1806 &data
->o_arg
.seq_args
,
1807 &data
->o_res
.seq_res
,
1809 nfs_release_seqid(data
->o_arg
.seqid
);
1811 /* Set the create mode (note dependency on the session type) */
1812 data
->o_arg
.createmode
= NFS4_CREATE_UNCHECKED
;
1813 if (data
->o_arg
.open_flags
& O_EXCL
) {
1814 data
->o_arg
.createmode
= NFS4_CREATE_EXCLUSIVE
;
1815 if (nfs4_has_persistent_session(clp
))
1816 data
->o_arg
.createmode
= NFS4_CREATE_GUARDED
;
1817 else if (clp
->cl_mvops
->minor_version
> 0)
1818 data
->o_arg
.createmode
= NFS4_CREATE_EXCLUSIVE4_1
;
1824 task
->tk_action
= NULL
;
1826 nfs4_sequence_done(task
, &data
->o_res
.seq_res
);
1829 static void nfs4_open_done(struct rpc_task
*task
, void *calldata
)
1831 struct nfs4_opendata
*data
= calldata
;
1833 data
->rpc_status
= task
->tk_status
;
1835 if (!nfs4_sequence_done(task
, &data
->o_res
.seq_res
))
1838 if (task
->tk_status
== 0) {
1839 if (data
->o_res
.f_attr
->valid
& NFS_ATTR_FATTR_TYPE
) {
1840 switch (data
->o_res
.f_attr
->mode
& S_IFMT
) {
1844 data
->rpc_status
= -ELOOP
;
1847 data
->rpc_status
= -EISDIR
;
1850 data
->rpc_status
= -ENOTDIR
;
1853 renew_lease(data
->o_res
.server
, data
->timestamp
);
1854 if (!(data
->o_res
.rflags
& NFS4_OPEN_RESULT_CONFIRM
))
1855 nfs_confirm_seqid(&data
->owner
->so_seqid
, 0);
1860 static void nfs4_open_release(void *calldata
)
1862 struct nfs4_opendata
*data
= calldata
;
1863 struct nfs4_state
*state
= NULL
;
1865 /* If this request hasn't been cancelled, do nothing */
1866 if (data
->cancelled
== 0)
1868 /* In case of error, no cleanup! */
1869 if (data
->rpc_status
!= 0 || !data
->rpc_done
)
1871 /* In case we need an open_confirm, no cleanup! */
1872 if (data
->o_res
.rflags
& NFS4_OPEN_RESULT_CONFIRM
)
1874 state
= nfs4_opendata_to_nfs4_state(data
);
1876 nfs4_close_state(state
, data
->o_arg
.fmode
);
1878 nfs4_opendata_put(data
);
1881 static const struct rpc_call_ops nfs4_open_ops
= {
1882 .rpc_call_prepare
= nfs4_open_prepare
,
1883 .rpc_call_done
= nfs4_open_done
,
1884 .rpc_release
= nfs4_open_release
,
1887 static int nfs4_run_open_task(struct nfs4_opendata
*data
, int isrecover
)
1889 struct inode
*dir
= data
->dir
->d_inode
;
1890 struct nfs_server
*server
= NFS_SERVER(dir
);
1891 struct nfs_openargs
*o_arg
= &data
->o_arg
;
1892 struct nfs_openres
*o_res
= &data
->o_res
;
1893 struct rpc_task
*task
;
1894 struct rpc_message msg
= {
1895 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN
],
1898 .rpc_cred
= data
->owner
->so_cred
,
1900 struct rpc_task_setup task_setup_data
= {
1901 .rpc_client
= server
->client
,
1902 .rpc_message
= &msg
,
1903 .callback_ops
= &nfs4_open_ops
,
1904 .callback_data
= data
,
1905 .workqueue
= nfsiod_workqueue
,
1906 .flags
= RPC_TASK_ASYNC
,
1910 nfs4_init_sequence(&o_arg
->seq_args
, &o_res
->seq_res
, 1);
1911 kref_get(&data
->kref
);
1913 data
->rpc_status
= 0;
1914 data
->cancelled
= 0;
1915 data
->is_recover
= 0;
1917 nfs4_set_sequence_privileged(&o_arg
->seq_args
);
1918 data
->is_recover
= 1;
1920 task
= rpc_run_task(&task_setup_data
);
1922 return PTR_ERR(task
);
1923 status
= nfs4_wait_for_completion_rpc_task(task
);
1925 data
->cancelled
= 1;
1928 status
= data
->rpc_status
;
1934 static int _nfs4_recover_proc_open(struct nfs4_opendata
*data
)
1936 struct inode
*dir
= data
->dir
->d_inode
;
1937 struct nfs_openres
*o_res
= &data
->o_res
;
1940 status
= nfs4_run_open_task(data
, 1);
1941 if (status
!= 0 || !data
->rpc_done
)
1944 nfs_fattr_map_and_free_names(NFS_SERVER(dir
), &data
->f_attr
);
1946 if (o_res
->rflags
& NFS4_OPEN_RESULT_CONFIRM
) {
1947 status
= _nfs4_proc_open_confirm(data
);
1955 static int nfs4_opendata_access(struct rpc_cred
*cred
,
1956 struct nfs4_opendata
*opendata
,
1957 struct nfs4_state
*state
, fmode_t fmode
,
1960 struct nfs_access_entry cache
;
1963 /* access call failed or for some reason the server doesn't
1964 * support any access modes -- defer access call until later */
1965 if (opendata
->o_res
.access_supported
== 0)
1969 /* don't check MAY_WRITE - a newly created file may not have
1970 * write mode bits, but POSIX allows the creating process to write.
1971 * use openflags to check for exec, because fmode won't
1972 * always have FMODE_EXEC set when file open for exec. */
1973 if (openflags
& __FMODE_EXEC
) {
1974 /* ONLY check for exec rights */
1976 } else if (fmode
& FMODE_READ
)
1980 cache
.jiffies
= jiffies
;
1981 nfs_access_set_mask(&cache
, opendata
->o_res
.access_result
);
1982 nfs_access_add_cache(state
->inode
, &cache
);
1984 if ((mask
& ~cache
.mask
& (MAY_READ
| MAY_EXEC
)) == 0)
1987 /* even though OPEN succeeded, access is denied. Close the file */
1988 nfs4_close_state(state
, fmode
);
1993 * Note: On error, nfs4_proc_open will free the struct nfs4_opendata
1995 static int _nfs4_proc_open(struct nfs4_opendata
*data
)
1997 struct inode
*dir
= data
->dir
->d_inode
;
1998 struct nfs_server
*server
= NFS_SERVER(dir
);
1999 struct nfs_openargs
*o_arg
= &data
->o_arg
;
2000 struct nfs_openres
*o_res
= &data
->o_res
;
2003 status
= nfs4_run_open_task(data
, 0);
2004 if (!data
->rpc_done
)
2007 if (status
== -NFS4ERR_BADNAME
&&
2008 !(o_arg
->open_flags
& O_CREAT
))
2013 nfs_fattr_map_and_free_names(server
, &data
->f_attr
);
2015 if (o_arg
->open_flags
& O_CREAT
) {
2016 update_changeattr(dir
, &o_res
->cinfo
);
2017 if (o_arg
->open_flags
& O_EXCL
)
2018 data
->file_created
= 1;
2019 else if (o_res
->cinfo
.before
!= o_res
->cinfo
.after
)
2020 data
->file_created
= 1;
2022 if ((o_res
->rflags
& NFS4_OPEN_RESULT_LOCKTYPE_POSIX
) == 0)
2023 server
->caps
&= ~NFS_CAP_POSIX_LOCK
;
2024 if(o_res
->rflags
& NFS4_OPEN_RESULT_CONFIRM
) {
2025 status
= _nfs4_proc_open_confirm(data
);
2029 if (!(o_res
->f_attr
->valid
& NFS_ATTR_FATTR
))
2030 _nfs4_proc_getattr(server
, &o_res
->fh
, o_res
->f_attr
, o_res
->f_label
);
2034 static int nfs4_recover_expired_lease(struct nfs_server
*server
)
2036 return nfs4_client_recover_expired_lease(server
->nfs_client
);
2041 * reclaim state on the server after a network partition.
2042 * Assumes caller holds the appropriate lock
2044 static int _nfs4_open_expired(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
2046 struct nfs4_opendata
*opendata
;
2049 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
,
2050 NFS4_OPEN_CLAIM_FH
);
2051 if (IS_ERR(opendata
))
2052 return PTR_ERR(opendata
);
2053 ret
= nfs4_open_recover(opendata
, state
);
2055 d_drop(ctx
->dentry
);
2056 nfs4_opendata_put(opendata
);
2060 static int nfs4_do_open_expired(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
2062 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
2063 struct nfs4_exception exception
= { };
2067 err
= _nfs4_open_expired(ctx
, state
);
2068 trace_nfs4_open_expired(ctx
, 0, err
);
2069 if (nfs4_clear_cap_atomic_open_v1(server
, err
, &exception
))
2074 case -NFS4ERR_GRACE
:
2075 case -NFS4ERR_DELAY
:
2076 nfs4_handle_exception(server
, err
, &exception
);
2079 } while (exception
.retry
);
2084 static int nfs4_open_expired(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
2086 struct nfs_open_context
*ctx
;
2089 ctx
= nfs4_state_find_open_context(state
);
2092 ret
= nfs4_do_open_expired(ctx
, state
);
2093 put_nfs_open_context(ctx
);
2097 #if defined(CONFIG_NFS_V4_1)
2098 static void nfs41_clear_delegation_stateid(struct nfs4_state
*state
)
2100 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
2101 nfs4_stateid
*stateid
= &state
->stateid
;
2102 struct nfs_delegation
*delegation
;
2103 struct rpc_cred
*cred
= NULL
;
2104 int status
= -NFS4ERR_BAD_STATEID
;
2106 /* If a state reset has been done, test_stateid is unneeded */
2107 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0)
2110 /* Get the delegation credential for use by test/free_stateid */
2112 delegation
= rcu_dereference(NFS_I(state
->inode
)->delegation
);
2113 if (delegation
!= NULL
&&
2114 nfs4_stateid_match(&delegation
->stateid
, stateid
)) {
2115 cred
= get_rpccred(delegation
->cred
);
2117 status
= nfs41_test_stateid(server
, stateid
, cred
);
2118 trace_nfs4_test_delegation_stateid(state
, NULL
, status
);
2122 if (status
!= NFS_OK
) {
2123 /* Free the stateid unless the server explicitly
2124 * informs us the stateid is unrecognized. */
2125 if (status
!= -NFS4ERR_BAD_STATEID
)
2126 nfs41_free_stateid(server
, stateid
, cred
);
2127 nfs_remove_bad_delegation(state
->inode
);
2129 write_seqlock(&state
->seqlock
);
2130 nfs4_stateid_copy(&state
->stateid
, &state
->open_stateid
);
2131 write_sequnlock(&state
->seqlock
);
2132 clear_bit(NFS_DELEGATED_STATE
, &state
->flags
);
2140 * nfs41_check_open_stateid - possibly free an open stateid
2142 * @state: NFSv4 state for an inode
2144 * Returns NFS_OK if recovery for this stateid is now finished.
2145 * Otherwise a negative NFS4ERR value is returned.
2147 static int nfs41_check_open_stateid(struct nfs4_state
*state
)
2149 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
2150 nfs4_stateid
*stateid
= &state
->open_stateid
;
2151 struct rpc_cred
*cred
= state
->owner
->so_cred
;
2154 /* If a state reset has been done, test_stateid is unneeded */
2155 if ((test_bit(NFS_O_RDONLY_STATE
, &state
->flags
) == 0) &&
2156 (test_bit(NFS_O_WRONLY_STATE
, &state
->flags
) == 0) &&
2157 (test_bit(NFS_O_RDWR_STATE
, &state
->flags
) == 0))
2158 return -NFS4ERR_BAD_STATEID
;
2160 status
= nfs41_test_stateid(server
, stateid
, cred
);
2161 trace_nfs4_test_open_stateid(state
, NULL
, status
);
2162 if (status
!= NFS_OK
) {
2163 /* Free the stateid unless the server explicitly
2164 * informs us the stateid is unrecognized. */
2165 if (status
!= -NFS4ERR_BAD_STATEID
)
2166 nfs41_free_stateid(server
, stateid
, cred
);
2168 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
2169 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
2170 clear_bit(NFS_O_RDWR_STATE
, &state
->flags
);
2171 clear_bit(NFS_OPEN_STATE
, &state
->flags
);
2176 static int nfs41_open_expired(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
2180 nfs41_clear_delegation_stateid(state
);
2181 status
= nfs41_check_open_stateid(state
);
2182 if (status
!= NFS_OK
)
2183 status
= nfs4_open_expired(sp
, state
);
2189 * on an EXCLUSIVE create, the server should send back a bitmask with FATTR4-*
2190 * fields corresponding to attributes that were used to store the verifier.
2191 * Make sure we clobber those fields in the later setattr call
2193 static inline void nfs4_exclusive_attrset(struct nfs4_opendata
*opendata
, struct iattr
*sattr
)
2195 if ((opendata
->o_res
.attrset
[1] & FATTR4_WORD1_TIME_ACCESS
) &&
2196 !(sattr
->ia_valid
& ATTR_ATIME_SET
))
2197 sattr
->ia_valid
|= ATTR_ATIME
;
2199 if ((opendata
->o_res
.attrset
[1] & FATTR4_WORD1_TIME_MODIFY
) &&
2200 !(sattr
->ia_valid
& ATTR_MTIME_SET
))
2201 sattr
->ia_valid
|= ATTR_MTIME
;
2204 static int _nfs4_open_and_get_state(struct nfs4_opendata
*opendata
,
2207 struct nfs_open_context
*ctx
)
2209 struct nfs4_state_owner
*sp
= opendata
->owner
;
2210 struct nfs_server
*server
= sp
->so_server
;
2211 struct dentry
*dentry
;
2212 struct nfs4_state
*state
;
2216 seq
= raw_seqcount_begin(&sp
->so_reclaim_seqcount
);
2218 ret
= _nfs4_proc_open(opendata
);
2222 state
= nfs4_opendata_to_nfs4_state(opendata
);
2223 ret
= PTR_ERR(state
);
2226 if (server
->caps
& NFS_CAP_POSIX_LOCK
)
2227 set_bit(NFS_STATE_POSIX_LOCKS
, &state
->flags
);
2229 dentry
= opendata
->dentry
;
2230 if (dentry
->d_inode
== NULL
) {
2231 /* FIXME: Is this d_drop() ever needed? */
2233 dentry
= d_add_unique(dentry
, igrab(state
->inode
));
2234 if (dentry
== NULL
) {
2235 dentry
= opendata
->dentry
;
2236 } else if (dentry
!= ctx
->dentry
) {
2238 ctx
->dentry
= dget(dentry
);
2240 nfs_set_verifier(dentry
,
2241 nfs_save_change_attribute(opendata
->dir
->d_inode
));
2244 ret
= nfs4_opendata_access(sp
->so_cred
, opendata
, state
, fmode
, flags
);
2249 if (dentry
->d_inode
== state
->inode
) {
2250 nfs_inode_attach_open_context(ctx
);
2251 if (read_seqcount_retry(&sp
->so_reclaim_seqcount
, seq
))
2252 nfs4_schedule_stateid_recovery(server
, state
);
2259 * Returns a referenced nfs4_state
2261 static int _nfs4_do_open(struct inode
*dir
,
2262 struct nfs_open_context
*ctx
,
2264 struct iattr
*sattr
,
2265 struct nfs4_label
*label
,
2268 struct nfs4_state_owner
*sp
;
2269 struct nfs4_state
*state
= NULL
;
2270 struct nfs_server
*server
= NFS_SERVER(dir
);
2271 struct nfs4_opendata
*opendata
;
2272 struct dentry
*dentry
= ctx
->dentry
;
2273 struct rpc_cred
*cred
= ctx
->cred
;
2274 struct nfs4_threshold
**ctx_th
= &ctx
->mdsthreshold
;
2275 fmode_t fmode
= ctx
->mode
& (FMODE_READ
|FMODE_WRITE
|FMODE_EXEC
);
2276 enum open_claim_type4 claim
= NFS4_OPEN_CLAIM_NULL
;
2277 struct nfs4_label
*olabel
= NULL
;
2280 /* Protect against reboot recovery conflicts */
2282 sp
= nfs4_get_state_owner(server
, cred
, GFP_KERNEL
);
2284 dprintk("nfs4_do_open: nfs4_get_state_owner failed!\n");
2287 status
= nfs4_recover_expired_lease(server
);
2289 goto err_put_state_owner
;
2290 if (dentry
->d_inode
!= NULL
)
2291 nfs4_return_incompatible_delegation(dentry
->d_inode
, fmode
);
2293 if (dentry
->d_inode
)
2294 claim
= NFS4_OPEN_CLAIM_FH
;
2295 opendata
= nfs4_opendata_alloc(dentry
, sp
, fmode
, flags
, sattr
,
2296 label
, claim
, GFP_KERNEL
);
2297 if (opendata
== NULL
)
2298 goto err_put_state_owner
;
2301 olabel
= nfs4_label_alloc(server
, GFP_KERNEL
);
2302 if (IS_ERR(olabel
)) {
2303 status
= PTR_ERR(olabel
);
2304 goto err_opendata_put
;
2308 if (server
->attr_bitmask
[2] & FATTR4_WORD2_MDSTHRESHOLD
) {
2309 if (!opendata
->f_attr
.mdsthreshold
) {
2310 opendata
->f_attr
.mdsthreshold
= pnfs_mdsthreshold_alloc();
2311 if (!opendata
->f_attr
.mdsthreshold
)
2312 goto err_free_label
;
2314 opendata
->o_arg
.open_bitmap
= &nfs4_pnfs_open_bitmap
[0];
2316 if (dentry
->d_inode
!= NULL
)
2317 opendata
->state
= nfs4_get_open_state(dentry
->d_inode
, sp
);
2319 status
= _nfs4_open_and_get_state(opendata
, fmode
, flags
, ctx
);
2321 goto err_free_label
;
2324 if ((opendata
->o_arg
.open_flags
& O_EXCL
) &&
2325 (opendata
->o_arg
.createmode
!= NFS4_CREATE_GUARDED
)) {
2326 nfs4_exclusive_attrset(opendata
, sattr
);
2328 nfs_fattr_init(opendata
->o_res
.f_attr
);
2329 status
= nfs4_do_setattr(state
->inode
, cred
,
2330 opendata
->o_res
.f_attr
, sattr
,
2331 state
, label
, olabel
);
2333 nfs_setattr_update_inode(state
->inode
, sattr
);
2334 nfs_post_op_update_inode(state
->inode
, opendata
->o_res
.f_attr
);
2335 nfs_setsecurity(state
->inode
, opendata
->o_res
.f_attr
, olabel
);
2338 if (opendata
->file_created
)
2339 *opened
|= FILE_CREATED
;
2341 if (pnfs_use_threshold(ctx_th
, opendata
->f_attr
.mdsthreshold
, server
)) {
2342 *ctx_th
= opendata
->f_attr
.mdsthreshold
;
2343 opendata
->f_attr
.mdsthreshold
= NULL
;
2346 nfs4_label_free(olabel
);
2348 nfs4_opendata_put(opendata
);
2349 nfs4_put_state_owner(sp
);
2352 nfs4_label_free(olabel
);
2354 nfs4_opendata_put(opendata
);
2355 err_put_state_owner
:
2356 nfs4_put_state_owner(sp
);
2362 static struct nfs4_state
*nfs4_do_open(struct inode
*dir
,
2363 struct nfs_open_context
*ctx
,
2365 struct iattr
*sattr
,
2366 struct nfs4_label
*label
,
2369 struct nfs_server
*server
= NFS_SERVER(dir
);
2370 struct nfs4_exception exception
= { };
2371 struct nfs4_state
*res
;
2375 status
= _nfs4_do_open(dir
, ctx
, flags
, sattr
, label
, opened
);
2377 trace_nfs4_open_file(ctx
, flags
, status
);
2380 /* NOTE: BAD_SEQID means the server and client disagree about the
2381 * book-keeping w.r.t. state-changing operations
2382 * (OPEN/CLOSE/LOCK/LOCKU...)
2383 * It is actually a sign of a bug on the client or on the server.
2385 * If we receive a BAD_SEQID error in the particular case of
2386 * doing an OPEN, we assume that nfs_increment_open_seqid() will
2387 * have unhashed the old state_owner for us, and that we can
2388 * therefore safely retry using a new one. We should still warn
2389 * the user though...
2391 if (status
== -NFS4ERR_BAD_SEQID
) {
2392 pr_warn_ratelimited("NFS: v4 server %s "
2393 " returned a bad sequence-id error!\n",
2394 NFS_SERVER(dir
)->nfs_client
->cl_hostname
);
2395 exception
.retry
= 1;
2399 * BAD_STATEID on OPEN means that the server cancelled our
2400 * state before it received the OPEN_CONFIRM.
2401 * Recover by retrying the request as per the discussion
2402 * on Page 181 of RFC3530.
2404 if (status
== -NFS4ERR_BAD_STATEID
) {
2405 exception
.retry
= 1;
2408 if (status
== -EAGAIN
) {
2409 /* We must have found a delegation */
2410 exception
.retry
= 1;
2413 if (nfs4_clear_cap_atomic_open_v1(server
, status
, &exception
))
2415 res
= ERR_PTR(nfs4_handle_exception(server
,
2416 status
, &exception
));
2417 } while (exception
.retry
);
2421 static int _nfs4_do_setattr(struct inode
*inode
, struct rpc_cred
*cred
,
2422 struct nfs_fattr
*fattr
, struct iattr
*sattr
,
2423 struct nfs4_state
*state
, struct nfs4_label
*ilabel
,
2424 struct nfs4_label
*olabel
)
2426 struct nfs_server
*server
= NFS_SERVER(inode
);
2427 struct nfs_setattrargs arg
= {
2428 .fh
= NFS_FH(inode
),
2431 .bitmask
= server
->attr_bitmask
,
2434 struct nfs_setattrres res
= {
2439 struct rpc_message msg
= {
2440 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETATTR
],
2445 unsigned long timestamp
= jiffies
;
2450 arg
.bitmask
= nfs4_bitmask(server
, ilabel
);
2452 arg
.bitmask
= nfs4_bitmask(server
, olabel
);
2454 nfs_fattr_init(fattr
);
2456 /* Servers should only apply open mode checks for file size changes */
2457 truncate
= (sattr
->ia_valid
& ATTR_SIZE
) ? true : false;
2458 fmode
= truncate
? FMODE_WRITE
: FMODE_READ
;
2460 if (nfs4_copy_delegation_stateid(&arg
.stateid
, inode
, fmode
)) {
2461 /* Use that stateid */
2462 } else if (truncate
&& state
!= NULL
) {
2463 struct nfs_lockowner lockowner
= {
2464 .l_owner
= current
->files
,
2465 .l_pid
= current
->tgid
,
2467 if (!nfs4_valid_open_stateid(state
))
2469 if (nfs4_select_rw_stateid(&arg
.stateid
, state
, FMODE_WRITE
,
2470 &lockowner
) == -EIO
)
2473 nfs4_stateid_copy(&arg
.stateid
, &zero_stateid
);
2475 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
2476 if (status
== 0 && state
!= NULL
)
2477 renew_lease(server
, timestamp
);
2481 static int nfs4_do_setattr(struct inode
*inode
, struct rpc_cred
*cred
,
2482 struct nfs_fattr
*fattr
, struct iattr
*sattr
,
2483 struct nfs4_state
*state
, struct nfs4_label
*ilabel
,
2484 struct nfs4_label
*olabel
)
2486 struct nfs_server
*server
= NFS_SERVER(inode
);
2487 struct nfs4_exception exception
= {
2493 err
= _nfs4_do_setattr(inode
, cred
, fattr
, sattr
, state
, ilabel
, olabel
);
2494 trace_nfs4_setattr(inode
, err
);
2496 case -NFS4ERR_OPENMODE
:
2497 if (!(sattr
->ia_valid
& ATTR_SIZE
)) {
2498 pr_warn_once("NFSv4: server %s is incorrectly "
2499 "applying open mode checks to "
2500 "a SETATTR that is not "
2501 "changing file size.\n",
2502 server
->nfs_client
->cl_hostname
);
2504 if (state
&& !(state
->state
& FMODE_WRITE
)) {
2506 if (sattr
->ia_valid
& ATTR_OPEN
)
2511 err
= nfs4_handle_exception(server
, err
, &exception
);
2512 } while (exception
.retry
);
2517 struct nfs4_closedata
{
2518 struct inode
*inode
;
2519 struct nfs4_state
*state
;
2520 struct nfs_closeargs arg
;
2521 struct nfs_closeres res
;
2522 struct nfs_fattr fattr
;
2523 unsigned long timestamp
;
2528 static void nfs4_free_closedata(void *data
)
2530 struct nfs4_closedata
*calldata
= data
;
2531 struct nfs4_state_owner
*sp
= calldata
->state
->owner
;
2532 struct super_block
*sb
= calldata
->state
->inode
->i_sb
;
2535 pnfs_roc_release(calldata
->state
->inode
);
2536 nfs4_put_open_state(calldata
->state
);
2537 nfs_free_seqid(calldata
->arg
.seqid
);
2538 nfs4_put_state_owner(sp
);
2539 nfs_sb_deactive(sb
);
2543 static void nfs4_close_done(struct rpc_task
*task
, void *data
)
2545 struct nfs4_closedata
*calldata
= data
;
2546 struct nfs4_state
*state
= calldata
->state
;
2547 struct nfs_server
*server
= NFS_SERVER(calldata
->inode
);
2549 dprintk("%s: begin!\n", __func__
);
2550 if (!nfs4_sequence_done(task
, &calldata
->res
.seq_res
))
2552 trace_nfs4_close(state
, &calldata
->arg
, &calldata
->res
, task
->tk_status
);
2553 /* hmm. we are done with the inode, and in the process of freeing
2554 * the state_owner. we keep this around to process errors
2556 switch (task
->tk_status
) {
2559 pnfs_roc_set_barrier(state
->inode
,
2560 calldata
->roc_barrier
);
2561 nfs_clear_open_stateid(state
, &calldata
->res
.stateid
, 0);
2562 renew_lease(server
, calldata
->timestamp
);
2564 case -NFS4ERR_ADMIN_REVOKED
:
2565 case -NFS4ERR_STALE_STATEID
:
2566 case -NFS4ERR_OLD_STATEID
:
2567 case -NFS4ERR_BAD_STATEID
:
2568 case -NFS4ERR_EXPIRED
:
2569 if (calldata
->arg
.fmode
== 0)
2572 if (nfs4_async_handle_error(task
, server
, state
) == -EAGAIN
) {
2573 rpc_restart_call_prepare(task
);
2577 nfs_clear_open_stateid(state
, NULL
, calldata
->arg
.fmode
);
2579 nfs_release_seqid(calldata
->arg
.seqid
);
2580 nfs_refresh_inode(calldata
->inode
, calldata
->res
.fattr
);
2581 dprintk("%s: done, ret = %d!\n", __func__
, task
->tk_status
);
2584 static void nfs4_close_prepare(struct rpc_task
*task
, void *data
)
2586 struct nfs4_closedata
*calldata
= data
;
2587 struct nfs4_state
*state
= calldata
->state
;
2588 struct inode
*inode
= calldata
->inode
;
2591 dprintk("%s: begin!\n", __func__
);
2592 if (nfs_wait_on_sequence(calldata
->arg
.seqid
, task
) != 0)
2595 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_DOWNGRADE
];
2596 calldata
->arg
.fmode
= FMODE_READ
|FMODE_WRITE
;
2597 spin_lock(&state
->owner
->so_lock
);
2598 /* Calculate the change in open mode */
2599 if (state
->n_rdwr
== 0) {
2600 if (state
->n_rdonly
== 0) {
2601 call_close
|= test_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
2602 call_close
|= test_bit(NFS_O_RDWR_STATE
, &state
->flags
);
2603 calldata
->arg
.fmode
&= ~FMODE_READ
;
2605 if (state
->n_wronly
== 0) {
2606 call_close
|= test_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
2607 call_close
|= test_bit(NFS_O_RDWR_STATE
, &state
->flags
);
2608 calldata
->arg
.fmode
&= ~FMODE_WRITE
;
2611 if (!nfs4_valid_open_stateid(state
))
2613 spin_unlock(&state
->owner
->so_lock
);
2616 /* Note: exit _without_ calling nfs4_close_done */
2620 if (calldata
->arg
.fmode
== 0) {
2621 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CLOSE
];
2622 if (calldata
->roc
&&
2623 pnfs_roc_drain(inode
, &calldata
->roc_barrier
, task
)) {
2624 nfs_release_seqid(calldata
->arg
.seqid
);
2629 nfs_fattr_init(calldata
->res
.fattr
);
2630 calldata
->timestamp
= jiffies
;
2631 if (nfs4_setup_sequence(NFS_SERVER(inode
),
2632 &calldata
->arg
.seq_args
,
2633 &calldata
->res
.seq_res
,
2635 nfs_release_seqid(calldata
->arg
.seqid
);
2636 dprintk("%s: done!\n", __func__
);
2639 task
->tk_action
= NULL
;
2641 nfs4_sequence_done(task
, &calldata
->res
.seq_res
);
2644 static const struct rpc_call_ops nfs4_close_ops
= {
2645 .rpc_call_prepare
= nfs4_close_prepare
,
2646 .rpc_call_done
= nfs4_close_done
,
2647 .rpc_release
= nfs4_free_closedata
,
2651 * It is possible for data to be read/written from a mem-mapped file
2652 * after the sys_close call (which hits the vfs layer as a flush).
2653 * This means that we can't safely call nfsv4 close on a file until
2654 * the inode is cleared. This in turn means that we are not good
2655 * NFSv4 citizens - we do not indicate to the server to update the file's
2656 * share state even when we are done with one of the three share
2657 * stateid's in the inode.
2659 * NOTE: Caller must be holding the sp->so_owner semaphore!
2661 int nfs4_do_close(struct nfs4_state
*state
, gfp_t gfp_mask
, int wait
)
2663 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
2664 struct nfs4_closedata
*calldata
;
2665 struct nfs4_state_owner
*sp
= state
->owner
;
2666 struct rpc_task
*task
;
2667 struct rpc_message msg
= {
2668 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CLOSE
],
2669 .rpc_cred
= state
->owner
->so_cred
,
2671 struct rpc_task_setup task_setup_data
= {
2672 .rpc_client
= server
->client
,
2673 .rpc_message
= &msg
,
2674 .callback_ops
= &nfs4_close_ops
,
2675 .workqueue
= nfsiod_workqueue
,
2676 .flags
= RPC_TASK_ASYNC
,
2678 int status
= -ENOMEM
;
2680 nfs4_state_protect(server
->nfs_client
, NFS_SP4_MACH_CRED_CLEANUP
,
2681 &task_setup_data
.rpc_client
, &msg
);
2683 calldata
= kzalloc(sizeof(*calldata
), gfp_mask
);
2684 if (calldata
== NULL
)
2686 nfs4_init_sequence(&calldata
->arg
.seq_args
, &calldata
->res
.seq_res
, 1);
2687 calldata
->inode
= state
->inode
;
2688 calldata
->state
= state
;
2689 calldata
->arg
.fh
= NFS_FH(state
->inode
);
2690 calldata
->arg
.stateid
= &state
->open_stateid
;
2691 /* Serialization for the sequence id */
2692 calldata
->arg
.seqid
= nfs_alloc_seqid(&state
->owner
->so_seqid
, gfp_mask
);
2693 if (calldata
->arg
.seqid
== NULL
)
2694 goto out_free_calldata
;
2695 calldata
->arg
.fmode
= 0;
2696 calldata
->arg
.bitmask
= server
->cache_consistency_bitmask
;
2697 calldata
->res
.fattr
= &calldata
->fattr
;
2698 calldata
->res
.seqid
= calldata
->arg
.seqid
;
2699 calldata
->res
.server
= server
;
2700 calldata
->roc
= pnfs_roc(state
->inode
);
2701 nfs_sb_active(calldata
->inode
->i_sb
);
2703 msg
.rpc_argp
= &calldata
->arg
;
2704 msg
.rpc_resp
= &calldata
->res
;
2705 task_setup_data
.callback_data
= calldata
;
2706 task
= rpc_run_task(&task_setup_data
);
2708 return PTR_ERR(task
);
2711 status
= rpc_wait_for_completion_task(task
);
2717 nfs4_put_open_state(state
);
2718 nfs4_put_state_owner(sp
);
2722 static struct inode
*
2723 nfs4_atomic_open(struct inode
*dir
, struct nfs_open_context
*ctx
,
2724 int open_flags
, struct iattr
*attr
, int *opened
)
2726 struct nfs4_state
*state
;
2727 struct nfs4_label l
= {0, 0, 0, NULL
}, *label
= NULL
;
2729 label
= nfs4_label_init_security(dir
, ctx
->dentry
, attr
, &l
);
2731 /* Protect against concurrent sillydeletes */
2732 state
= nfs4_do_open(dir
, ctx
, open_flags
, attr
, label
, opened
);
2734 nfs4_label_release_security(label
);
2737 return ERR_CAST(state
);
2738 return state
->inode
;
2741 static void nfs4_close_context(struct nfs_open_context
*ctx
, int is_sync
)
2743 if (ctx
->state
== NULL
)
2746 nfs4_close_sync(ctx
->state
, ctx
->mode
);
2748 nfs4_close_state(ctx
->state
, ctx
->mode
);
2751 #define FATTR4_WORD1_NFS40_MASK (2*FATTR4_WORD1_MOUNTED_ON_FILEID - 1UL)
2752 #define FATTR4_WORD2_NFS41_MASK (2*FATTR4_WORD2_SUPPATTR_EXCLCREAT - 1UL)
2753 #define FATTR4_WORD2_NFS42_MASK (2*FATTR4_WORD2_CHANGE_SECURITY_LABEL - 1UL)
2755 static int _nfs4_server_capabilities(struct nfs_server
*server
, struct nfs_fh
*fhandle
)
2757 struct nfs4_server_caps_arg args
= {
2760 struct nfs4_server_caps_res res
= {};
2761 struct rpc_message msg
= {
2762 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SERVER_CAPS
],
2768 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2770 /* Sanity check the server answers */
2771 switch (server
->nfs_client
->cl_minorversion
) {
2773 res
.attr_bitmask
[1] &= FATTR4_WORD1_NFS40_MASK
;
2774 res
.attr_bitmask
[2] = 0;
2777 res
.attr_bitmask
[2] &= FATTR4_WORD2_NFS41_MASK
;
2780 res
.attr_bitmask
[2] &= FATTR4_WORD2_NFS42_MASK
;
2782 memcpy(server
->attr_bitmask
, res
.attr_bitmask
, sizeof(server
->attr_bitmask
));
2783 server
->caps
&= ~(NFS_CAP_ACLS
|NFS_CAP_HARDLINKS
|
2784 NFS_CAP_SYMLINKS
|NFS_CAP_FILEID
|
2785 NFS_CAP_MODE
|NFS_CAP_NLINK
|NFS_CAP_OWNER
|
2786 NFS_CAP_OWNER_GROUP
|NFS_CAP_ATIME
|
2787 NFS_CAP_CTIME
|NFS_CAP_MTIME
|
2788 NFS_CAP_SECURITY_LABEL
);
2789 if (res
.attr_bitmask
[0] & FATTR4_WORD0_ACL
&&
2790 res
.acl_bitmask
& ACL4_SUPPORT_ALLOW_ACL
)
2791 server
->caps
|= NFS_CAP_ACLS
;
2792 if (res
.has_links
!= 0)
2793 server
->caps
|= NFS_CAP_HARDLINKS
;
2794 if (res
.has_symlinks
!= 0)
2795 server
->caps
|= NFS_CAP_SYMLINKS
;
2796 if (res
.attr_bitmask
[0] & FATTR4_WORD0_FILEID
)
2797 server
->caps
|= NFS_CAP_FILEID
;
2798 if (res
.attr_bitmask
[1] & FATTR4_WORD1_MODE
)
2799 server
->caps
|= NFS_CAP_MODE
;
2800 if (res
.attr_bitmask
[1] & FATTR4_WORD1_NUMLINKS
)
2801 server
->caps
|= NFS_CAP_NLINK
;
2802 if (res
.attr_bitmask
[1] & FATTR4_WORD1_OWNER
)
2803 server
->caps
|= NFS_CAP_OWNER
;
2804 if (res
.attr_bitmask
[1] & FATTR4_WORD1_OWNER_GROUP
)
2805 server
->caps
|= NFS_CAP_OWNER_GROUP
;
2806 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_ACCESS
)
2807 server
->caps
|= NFS_CAP_ATIME
;
2808 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_METADATA
)
2809 server
->caps
|= NFS_CAP_CTIME
;
2810 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_MODIFY
)
2811 server
->caps
|= NFS_CAP_MTIME
;
2812 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
2813 if (res
.attr_bitmask
[2] & FATTR4_WORD2_SECURITY_LABEL
)
2814 server
->caps
|= NFS_CAP_SECURITY_LABEL
;
2816 memcpy(server
->attr_bitmask_nl
, res
.attr_bitmask
,
2817 sizeof(server
->attr_bitmask
));
2818 server
->attr_bitmask_nl
[2] &= ~FATTR4_WORD2_SECURITY_LABEL
;
2820 memcpy(server
->cache_consistency_bitmask
, res
.attr_bitmask
, sizeof(server
->cache_consistency_bitmask
));
2821 server
->cache_consistency_bitmask
[0] &= FATTR4_WORD0_CHANGE
|FATTR4_WORD0_SIZE
;
2822 server
->cache_consistency_bitmask
[1] &= FATTR4_WORD1_TIME_METADATA
|FATTR4_WORD1_TIME_MODIFY
;
2823 server
->cache_consistency_bitmask
[2] = 0;
2824 server
->acl_bitmask
= res
.acl_bitmask
;
2825 server
->fh_expire_type
= res
.fh_expire_type
;
2831 int nfs4_server_capabilities(struct nfs_server
*server
, struct nfs_fh
*fhandle
)
2833 struct nfs4_exception exception
= { };
2836 err
= nfs4_handle_exception(server
,
2837 _nfs4_server_capabilities(server
, fhandle
),
2839 } while (exception
.retry
);
2843 static int _nfs4_lookup_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2844 struct nfs_fsinfo
*info
)
2847 struct nfs4_lookup_root_arg args
= {
2850 struct nfs4_lookup_res res
= {
2852 .fattr
= info
->fattr
,
2855 struct rpc_message msg
= {
2856 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOOKUP_ROOT
],
2861 bitmask
[0] = nfs4_fattr_bitmap
[0];
2862 bitmask
[1] = nfs4_fattr_bitmap
[1];
2864 * Process the label in the upcoming getfattr
2866 bitmask
[2] = nfs4_fattr_bitmap
[2] & ~FATTR4_WORD2_SECURITY_LABEL
;
2868 nfs_fattr_init(info
->fattr
);
2869 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2872 static int nfs4_lookup_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2873 struct nfs_fsinfo
*info
)
2875 struct nfs4_exception exception
= { };
2878 err
= _nfs4_lookup_root(server
, fhandle
, info
);
2879 trace_nfs4_lookup_root(server
, fhandle
, info
->fattr
, err
);
2882 case -NFS4ERR_WRONGSEC
:
2885 err
= nfs4_handle_exception(server
, err
, &exception
);
2887 } while (exception
.retry
);
2892 static int nfs4_lookup_root_sec(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2893 struct nfs_fsinfo
*info
, rpc_authflavor_t flavor
)
2895 struct rpc_auth_create_args auth_args
= {
2896 .pseudoflavor
= flavor
,
2898 struct rpc_auth
*auth
;
2901 auth
= rpcauth_create(&auth_args
, server
->client
);
2906 ret
= nfs4_lookup_root(server
, fhandle
, info
);
2912 * Retry pseudoroot lookup with various security flavors. We do this when:
2914 * NFSv4.0: the PUTROOTFH operation returns NFS4ERR_WRONGSEC
2915 * NFSv4.1: the server does not support the SECINFO_NO_NAME operation
2917 * Returns zero on success, or a negative NFS4ERR value, or a
2918 * negative errno value.
2920 static int nfs4_find_root_sec(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2921 struct nfs_fsinfo
*info
)
2923 /* Per 3530bis 15.33.5 */
2924 static const rpc_authflavor_t flav_array
[] = {
2928 RPC_AUTH_UNIX
, /* courtesy */
2931 int status
= -EPERM
;
2934 if (server
->auth_info
.flavor_len
> 0) {
2935 /* try each flavor specified by user */
2936 for (i
= 0; i
< server
->auth_info
.flavor_len
; i
++) {
2937 status
= nfs4_lookup_root_sec(server
, fhandle
, info
,
2938 server
->auth_info
.flavors
[i
]);
2939 if (status
== -NFS4ERR_WRONGSEC
|| status
== -EACCES
)
2944 /* no flavors specified by user, try default list */
2945 for (i
= 0; i
< ARRAY_SIZE(flav_array
); i
++) {
2946 status
= nfs4_lookup_root_sec(server
, fhandle
, info
,
2948 if (status
== -NFS4ERR_WRONGSEC
|| status
== -EACCES
)
2955 * -EACCESS could mean that the user doesn't have correct permissions
2956 * to access the mount. It could also mean that we tried to mount
2957 * with a gss auth flavor, but rpc.gssd isn't running. Either way,
2958 * existing mount programs don't handle -EACCES very well so it should
2959 * be mapped to -EPERM instead.
2961 if (status
== -EACCES
)
2966 static int nfs4_do_find_root_sec(struct nfs_server
*server
,
2967 struct nfs_fh
*fhandle
, struct nfs_fsinfo
*info
)
2969 int mv
= server
->nfs_client
->cl_minorversion
;
2970 return nfs_v4_minor_ops
[mv
]->find_root_sec(server
, fhandle
, info
);
2974 * nfs4_proc_get_rootfh - get file handle for server's pseudoroot
2975 * @server: initialized nfs_server handle
2976 * @fhandle: we fill in the pseudo-fs root file handle
2977 * @info: we fill in an FSINFO struct
2978 * @auth_probe: probe the auth flavours
2980 * Returns zero on success, or a negative errno.
2982 int nfs4_proc_get_rootfh(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2983 struct nfs_fsinfo
*info
,
2988 switch (auth_probe
) {
2990 status
= nfs4_lookup_root(server
, fhandle
, info
);
2991 if (status
!= -NFS4ERR_WRONGSEC
)
2994 status
= nfs4_do_find_root_sec(server
, fhandle
, info
);
2998 status
= nfs4_server_capabilities(server
, fhandle
);
3000 status
= nfs4_do_fsinfo(server
, fhandle
, info
);
3002 return nfs4_map_errors(status
);
3005 static int nfs4_proc_get_root(struct nfs_server
*server
, struct nfs_fh
*mntfh
,
3006 struct nfs_fsinfo
*info
)
3009 struct nfs_fattr
*fattr
= info
->fattr
;
3010 struct nfs4_label
*label
= NULL
;
3012 error
= nfs4_server_capabilities(server
, mntfh
);
3014 dprintk("nfs4_get_root: getcaps error = %d\n", -error
);
3018 label
= nfs4_label_alloc(server
, GFP_KERNEL
);
3020 return PTR_ERR(label
);
3022 error
= nfs4_proc_getattr(server
, mntfh
, fattr
, label
);
3024 dprintk("nfs4_get_root: getattr error = %d\n", -error
);
3025 goto err_free_label
;
3028 if (fattr
->valid
& NFS_ATTR_FATTR_FSID
&&
3029 !nfs_fsid_equal(&server
->fsid
, &fattr
->fsid
))
3030 memcpy(&server
->fsid
, &fattr
->fsid
, sizeof(server
->fsid
));
3033 nfs4_label_free(label
);
3039 * Get locations and (maybe) other attributes of a referral.
3040 * Note that we'll actually follow the referral later when
3041 * we detect fsid mismatch in inode revalidation
3043 static int nfs4_get_referral(struct rpc_clnt
*client
, struct inode
*dir
,
3044 const struct qstr
*name
, struct nfs_fattr
*fattr
,
3045 struct nfs_fh
*fhandle
)
3047 int status
= -ENOMEM
;
3048 struct page
*page
= NULL
;
3049 struct nfs4_fs_locations
*locations
= NULL
;
3051 page
= alloc_page(GFP_KERNEL
);
3054 locations
= kmalloc(sizeof(struct nfs4_fs_locations
), GFP_KERNEL
);
3055 if (locations
== NULL
)
3058 status
= nfs4_proc_fs_locations(client
, dir
, name
, locations
, page
);
3063 * If the fsid didn't change, this is a migration event, not a
3064 * referral. Cause us to drop into the exception handler, which
3065 * will kick off migration recovery.
3067 if (nfs_fsid_equal(&NFS_SERVER(dir
)->fsid
, &locations
->fattr
.fsid
)) {
3068 dprintk("%s: server did not return a different fsid for"
3069 " a referral at %s\n", __func__
, name
->name
);
3070 status
= -NFS4ERR_MOVED
;
3073 /* Fixup attributes for the nfs_lookup() call to nfs_fhget() */
3074 nfs_fixup_referral_attributes(&locations
->fattr
);
3076 /* replace the lookup nfs_fattr with the locations nfs_fattr */
3077 memcpy(fattr
, &locations
->fattr
, sizeof(struct nfs_fattr
));
3078 memset(fhandle
, 0, sizeof(struct nfs_fh
));
3086 static int _nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3087 struct nfs_fattr
*fattr
, struct nfs4_label
*label
)
3089 struct nfs4_getattr_arg args
= {
3091 .bitmask
= server
->attr_bitmask
,
3093 struct nfs4_getattr_res res
= {
3098 struct rpc_message msg
= {
3099 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETATTR
],
3104 args
.bitmask
= nfs4_bitmask(server
, label
);
3106 nfs_fattr_init(fattr
);
3107 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3110 static int nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3111 struct nfs_fattr
*fattr
, struct nfs4_label
*label
)
3113 struct nfs4_exception exception
= { };
3116 err
= _nfs4_proc_getattr(server
, fhandle
, fattr
, label
);
3117 trace_nfs4_getattr(server
, fhandle
, fattr
, err
);
3118 err
= nfs4_handle_exception(server
, err
,
3120 } while (exception
.retry
);
3125 * The file is not closed if it is opened due to the a request to change
3126 * the size of the file. The open call will not be needed once the
3127 * VFS layer lookup-intents are implemented.
3129 * Close is called when the inode is destroyed.
3130 * If we haven't opened the file for O_WRONLY, we
3131 * need to in the size_change case to obtain a stateid.
3134 * Because OPEN is always done by name in nfsv4, it is
3135 * possible that we opened a different file by the same
3136 * name. We can recognize this race condition, but we
3137 * can't do anything about it besides returning an error.
3139 * This will be fixed with VFS changes (lookup-intent).
3142 nfs4_proc_setattr(struct dentry
*dentry
, struct nfs_fattr
*fattr
,
3143 struct iattr
*sattr
)
3145 struct inode
*inode
= dentry
->d_inode
;
3146 struct rpc_cred
*cred
= NULL
;
3147 struct nfs4_state
*state
= NULL
;
3148 struct nfs4_label
*label
= NULL
;
3151 if (pnfs_ld_layoutret_on_setattr(inode
))
3152 pnfs_commit_and_return_layout(inode
);
3154 nfs_fattr_init(fattr
);
3156 /* Deal with open(O_TRUNC) */
3157 if (sattr
->ia_valid
& ATTR_OPEN
)
3158 sattr
->ia_valid
&= ~(ATTR_MTIME
|ATTR_CTIME
);
3160 /* Optimization: if the end result is no change, don't RPC */
3161 if ((sattr
->ia_valid
& ~(ATTR_FILE
|ATTR_OPEN
)) == 0)
3164 /* Search for an existing open(O_WRITE) file */
3165 if (sattr
->ia_valid
& ATTR_FILE
) {
3166 struct nfs_open_context
*ctx
;
3168 ctx
= nfs_file_open_context(sattr
->ia_file
);
3175 label
= nfs4_label_alloc(NFS_SERVER(inode
), GFP_KERNEL
);
3177 return PTR_ERR(label
);
3179 status
= nfs4_do_setattr(inode
, cred
, fattr
, sattr
, state
, NULL
, label
);
3181 nfs_setattr_update_inode(inode
, sattr
);
3182 nfs_setsecurity(inode
, fattr
, label
);
3184 nfs4_label_free(label
);
3188 static int _nfs4_proc_lookup(struct rpc_clnt
*clnt
, struct inode
*dir
,
3189 const struct qstr
*name
, struct nfs_fh
*fhandle
,
3190 struct nfs_fattr
*fattr
, struct nfs4_label
*label
)
3192 struct nfs_server
*server
= NFS_SERVER(dir
);
3194 struct nfs4_lookup_arg args
= {
3195 .bitmask
= server
->attr_bitmask
,
3196 .dir_fh
= NFS_FH(dir
),
3199 struct nfs4_lookup_res res
= {
3205 struct rpc_message msg
= {
3206 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOOKUP
],
3211 args
.bitmask
= nfs4_bitmask(server
, label
);
3213 nfs_fattr_init(fattr
);
3215 dprintk("NFS call lookup %s\n", name
->name
);
3216 status
= nfs4_call_sync(clnt
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3217 dprintk("NFS reply lookup: %d\n", status
);
3221 static void nfs_fixup_secinfo_attributes(struct nfs_fattr
*fattr
)
3223 fattr
->valid
|= NFS_ATTR_FATTR_TYPE
| NFS_ATTR_FATTR_MODE
|
3224 NFS_ATTR_FATTR_NLINK
| NFS_ATTR_FATTR_MOUNTPOINT
;
3225 fattr
->mode
= S_IFDIR
| S_IRUGO
| S_IXUGO
;
3229 static int nfs4_proc_lookup_common(struct rpc_clnt
**clnt
, struct inode
*dir
,
3230 struct qstr
*name
, struct nfs_fh
*fhandle
,
3231 struct nfs_fattr
*fattr
, struct nfs4_label
*label
)
3233 struct nfs4_exception exception
= { };
3234 struct rpc_clnt
*client
= *clnt
;
3237 err
= _nfs4_proc_lookup(client
, dir
, name
, fhandle
, fattr
, label
);
3238 trace_nfs4_lookup(dir
, name
, err
);
3240 case -NFS4ERR_BADNAME
:
3243 case -NFS4ERR_MOVED
:
3244 err
= nfs4_get_referral(client
, dir
, name
, fattr
, fhandle
);
3246 case -NFS4ERR_WRONGSEC
:
3248 if (client
!= *clnt
)
3250 client
= nfs4_create_sec_client(client
, dir
, name
);
3252 return PTR_ERR(client
);
3254 exception
.retry
= 1;
3257 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
, &exception
);
3259 } while (exception
.retry
);
3264 else if (client
!= *clnt
)
3265 rpc_shutdown_client(client
);
3270 static int nfs4_proc_lookup(struct inode
*dir
, struct qstr
*name
,
3271 struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
,
3272 struct nfs4_label
*label
)
3275 struct rpc_clnt
*client
= NFS_CLIENT(dir
);
3277 status
= nfs4_proc_lookup_common(&client
, dir
, name
, fhandle
, fattr
, label
);
3278 if (client
!= NFS_CLIENT(dir
)) {
3279 rpc_shutdown_client(client
);
3280 nfs_fixup_secinfo_attributes(fattr
);
3286 nfs4_proc_lookup_mountpoint(struct inode
*dir
, struct qstr
*name
,
3287 struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
3289 struct rpc_clnt
*client
= NFS_CLIENT(dir
);
3292 status
= nfs4_proc_lookup_common(&client
, dir
, name
, fhandle
, fattr
, NULL
);
3294 return ERR_PTR(status
);
3295 return (client
== NFS_CLIENT(dir
)) ? rpc_clone_client(client
) : client
;
3298 static int _nfs4_proc_access(struct inode
*inode
, struct nfs_access_entry
*entry
)
3300 struct nfs_server
*server
= NFS_SERVER(inode
);
3301 struct nfs4_accessargs args
= {
3302 .fh
= NFS_FH(inode
),
3303 .bitmask
= server
->cache_consistency_bitmask
,
3305 struct nfs4_accessres res
= {
3308 struct rpc_message msg
= {
3309 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_ACCESS
],
3312 .rpc_cred
= entry
->cred
,
3314 int mode
= entry
->mask
;
3318 * Determine which access bits we want to ask for...
3320 if (mode
& MAY_READ
)
3321 args
.access
|= NFS4_ACCESS_READ
;
3322 if (S_ISDIR(inode
->i_mode
)) {
3323 if (mode
& MAY_WRITE
)
3324 args
.access
|= NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
| NFS4_ACCESS_DELETE
;
3325 if (mode
& MAY_EXEC
)
3326 args
.access
|= NFS4_ACCESS_LOOKUP
;
3328 if (mode
& MAY_WRITE
)
3329 args
.access
|= NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
;
3330 if (mode
& MAY_EXEC
)
3331 args
.access
|= NFS4_ACCESS_EXECUTE
;
3334 res
.fattr
= nfs_alloc_fattr();
3335 if (res
.fattr
== NULL
)
3338 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3340 nfs_access_set_mask(entry
, res
.access
);
3341 nfs_refresh_inode(inode
, res
.fattr
);
3343 nfs_free_fattr(res
.fattr
);
3347 static int nfs4_proc_access(struct inode
*inode
, struct nfs_access_entry
*entry
)
3349 struct nfs4_exception exception
= { };
3352 err
= _nfs4_proc_access(inode
, entry
);
3353 trace_nfs4_access(inode
, err
);
3354 err
= nfs4_handle_exception(NFS_SERVER(inode
), err
,
3356 } while (exception
.retry
);
3361 * TODO: For the time being, we don't try to get any attributes
3362 * along with any of the zero-copy operations READ, READDIR,
3365 * In the case of the first three, we want to put the GETATTR
3366 * after the read-type operation -- this is because it is hard
3367 * to predict the length of a GETATTR response in v4, and thus
3368 * align the READ data correctly. This means that the GETATTR
3369 * may end up partially falling into the page cache, and we should
3370 * shift it into the 'tail' of the xdr_buf before processing.
3371 * To do this efficiently, we need to know the total length
3372 * of data received, which doesn't seem to be available outside
3375 * In the case of WRITE, we also want to put the GETATTR after
3376 * the operation -- in this case because we want to make sure
3377 * we get the post-operation mtime and size.
3379 * Both of these changes to the XDR layer would in fact be quite
3380 * minor, but I decided to leave them for a subsequent patch.
3382 static int _nfs4_proc_readlink(struct inode
*inode
, struct page
*page
,
3383 unsigned int pgbase
, unsigned int pglen
)
3385 struct nfs4_readlink args
= {
3386 .fh
= NFS_FH(inode
),
3391 struct nfs4_readlink_res res
;
3392 struct rpc_message msg
= {
3393 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READLINK
],
3398 return nfs4_call_sync(NFS_SERVER(inode
)->client
, NFS_SERVER(inode
), &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3401 static int nfs4_proc_readlink(struct inode
*inode
, struct page
*page
,
3402 unsigned int pgbase
, unsigned int pglen
)
3404 struct nfs4_exception exception
= { };
3407 err
= _nfs4_proc_readlink(inode
, page
, pgbase
, pglen
);
3408 trace_nfs4_readlink(inode
, err
);
3409 err
= nfs4_handle_exception(NFS_SERVER(inode
), err
,
3411 } while (exception
.retry
);
3416 * This is just for mknod. open(O_CREAT) will always do ->open_context().
3419 nfs4_proc_create(struct inode
*dir
, struct dentry
*dentry
, struct iattr
*sattr
,
3422 struct nfs4_label l
, *ilabel
= NULL
;
3423 struct nfs_open_context
*ctx
;
3424 struct nfs4_state
*state
;
3428 ctx
= alloc_nfs_open_context(dentry
, FMODE_READ
);
3430 return PTR_ERR(ctx
);
3432 ilabel
= nfs4_label_init_security(dir
, dentry
, sattr
, &l
);
3434 sattr
->ia_mode
&= ~current_umask();
3435 state
= nfs4_do_open(dir
, ctx
, flags
, sattr
, ilabel
, &opened
);
3436 if (IS_ERR(state
)) {
3437 status
= PTR_ERR(state
);
3441 nfs4_label_release_security(ilabel
);
3442 put_nfs_open_context(ctx
);
3446 static int _nfs4_proc_remove(struct inode
*dir
, struct qstr
*name
)
3448 struct nfs_server
*server
= NFS_SERVER(dir
);
3449 struct nfs_removeargs args
= {
3453 struct nfs_removeres res
= {
3456 struct rpc_message msg
= {
3457 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_REMOVE
],
3463 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 1);
3465 update_changeattr(dir
, &res
.cinfo
);
3469 static int nfs4_proc_remove(struct inode
*dir
, struct qstr
*name
)
3471 struct nfs4_exception exception
= { };
3474 err
= _nfs4_proc_remove(dir
, name
);
3475 trace_nfs4_remove(dir
, name
, err
);
3476 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
3478 } while (exception
.retry
);
3482 static void nfs4_proc_unlink_setup(struct rpc_message
*msg
, struct inode
*dir
)
3484 struct nfs_server
*server
= NFS_SERVER(dir
);
3485 struct nfs_removeargs
*args
= msg
->rpc_argp
;
3486 struct nfs_removeres
*res
= msg
->rpc_resp
;
3488 res
->server
= server
;
3489 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_REMOVE
];
3490 nfs4_init_sequence(&args
->seq_args
, &res
->seq_res
, 1);
3492 nfs_fattr_init(res
->dir_attr
);
3495 static void nfs4_proc_unlink_rpc_prepare(struct rpc_task
*task
, struct nfs_unlinkdata
*data
)
3497 nfs4_setup_sequence(NFS_SERVER(data
->dir
),
3498 &data
->args
.seq_args
,
3503 static int nfs4_proc_unlink_done(struct rpc_task
*task
, struct inode
*dir
)
3505 struct nfs_unlinkdata
*data
= task
->tk_calldata
;
3506 struct nfs_removeres
*res
= &data
->res
;
3508 if (!nfs4_sequence_done(task
, &res
->seq_res
))
3510 if (nfs4_async_handle_error(task
, res
->server
, NULL
) == -EAGAIN
)
3512 update_changeattr(dir
, &res
->cinfo
);
3516 static void nfs4_proc_rename_setup(struct rpc_message
*msg
, struct inode
*dir
)
3518 struct nfs_server
*server
= NFS_SERVER(dir
);
3519 struct nfs_renameargs
*arg
= msg
->rpc_argp
;
3520 struct nfs_renameres
*res
= msg
->rpc_resp
;
3522 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENAME
];
3523 res
->server
= server
;
3524 nfs4_init_sequence(&arg
->seq_args
, &res
->seq_res
, 1);
3527 static void nfs4_proc_rename_rpc_prepare(struct rpc_task
*task
, struct nfs_renamedata
*data
)
3529 nfs4_setup_sequence(NFS_SERVER(data
->old_dir
),
3530 &data
->args
.seq_args
,
3535 static int nfs4_proc_rename_done(struct rpc_task
*task
, struct inode
*old_dir
,
3536 struct inode
*new_dir
)
3538 struct nfs_renamedata
*data
= task
->tk_calldata
;
3539 struct nfs_renameres
*res
= &data
->res
;
3541 if (!nfs4_sequence_done(task
, &res
->seq_res
))
3543 if (nfs4_async_handle_error(task
, res
->server
, NULL
) == -EAGAIN
)
3546 update_changeattr(old_dir
, &res
->old_cinfo
);
3547 update_changeattr(new_dir
, &res
->new_cinfo
);
3551 static int _nfs4_proc_link(struct inode
*inode
, struct inode
*dir
, struct qstr
*name
)
3553 struct nfs_server
*server
= NFS_SERVER(inode
);
3554 struct nfs4_link_arg arg
= {
3555 .fh
= NFS_FH(inode
),
3556 .dir_fh
= NFS_FH(dir
),
3558 .bitmask
= server
->attr_bitmask
,
3560 struct nfs4_link_res res
= {
3564 struct rpc_message msg
= {
3565 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LINK
],
3569 int status
= -ENOMEM
;
3571 res
.fattr
= nfs_alloc_fattr();
3572 if (res
.fattr
== NULL
)
3575 res
.label
= nfs4_label_alloc(server
, GFP_KERNEL
);
3576 if (IS_ERR(res
.label
)) {
3577 status
= PTR_ERR(res
.label
);
3580 arg
.bitmask
= nfs4_bitmask(server
, res
.label
);
3582 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
3584 update_changeattr(dir
, &res
.cinfo
);
3585 status
= nfs_post_op_update_inode(inode
, res
.fattr
);
3587 nfs_setsecurity(inode
, res
.fattr
, res
.label
);
3591 nfs4_label_free(res
.label
);
3594 nfs_free_fattr(res
.fattr
);
3598 static int nfs4_proc_link(struct inode
*inode
, struct inode
*dir
, struct qstr
*name
)
3600 struct nfs4_exception exception
= { };
3603 err
= nfs4_handle_exception(NFS_SERVER(inode
),
3604 _nfs4_proc_link(inode
, dir
, name
),
3606 } while (exception
.retry
);
3610 struct nfs4_createdata
{
3611 struct rpc_message msg
;
3612 struct nfs4_create_arg arg
;
3613 struct nfs4_create_res res
;
3615 struct nfs_fattr fattr
;
3616 struct nfs4_label
*label
;
3619 static struct nfs4_createdata
*nfs4_alloc_createdata(struct inode
*dir
,
3620 struct qstr
*name
, struct iattr
*sattr
, u32 ftype
)
3622 struct nfs4_createdata
*data
;
3624 data
= kzalloc(sizeof(*data
), GFP_KERNEL
);
3626 struct nfs_server
*server
= NFS_SERVER(dir
);
3628 data
->label
= nfs4_label_alloc(server
, GFP_KERNEL
);
3629 if (IS_ERR(data
->label
))
3632 data
->msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CREATE
];
3633 data
->msg
.rpc_argp
= &data
->arg
;
3634 data
->msg
.rpc_resp
= &data
->res
;
3635 data
->arg
.dir_fh
= NFS_FH(dir
);
3636 data
->arg
.server
= server
;
3637 data
->arg
.name
= name
;
3638 data
->arg
.attrs
= sattr
;
3639 data
->arg
.ftype
= ftype
;
3640 data
->arg
.bitmask
= nfs4_bitmask(server
, data
->label
);
3641 data
->res
.server
= server
;
3642 data
->res
.fh
= &data
->fh
;
3643 data
->res
.fattr
= &data
->fattr
;
3644 data
->res
.label
= data
->label
;
3645 nfs_fattr_init(data
->res
.fattr
);
3653 static int nfs4_do_create(struct inode
*dir
, struct dentry
*dentry
, struct nfs4_createdata
*data
)
3655 int status
= nfs4_call_sync(NFS_SERVER(dir
)->client
, NFS_SERVER(dir
), &data
->msg
,
3656 &data
->arg
.seq_args
, &data
->res
.seq_res
, 1);
3658 update_changeattr(dir
, &data
->res
.dir_cinfo
);
3659 status
= nfs_instantiate(dentry
, data
->res
.fh
, data
->res
.fattr
, data
->res
.label
);
3664 static void nfs4_free_createdata(struct nfs4_createdata
*data
)
3666 nfs4_label_free(data
->label
);
3670 static int _nfs4_proc_symlink(struct inode
*dir
, struct dentry
*dentry
,
3671 struct page
*page
, unsigned int len
, struct iattr
*sattr
,
3672 struct nfs4_label
*label
)
3674 struct nfs4_createdata
*data
;
3675 int status
= -ENAMETOOLONG
;
3677 if (len
> NFS4_MAXPATHLEN
)
3681 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4LNK
);
3685 data
->msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SYMLINK
];
3686 data
->arg
.u
.symlink
.pages
= &page
;
3687 data
->arg
.u
.symlink
.len
= len
;
3688 data
->arg
.label
= label
;
3690 status
= nfs4_do_create(dir
, dentry
, data
);
3692 nfs4_free_createdata(data
);
3697 static int nfs4_proc_symlink(struct inode
*dir
, struct dentry
*dentry
,
3698 struct page
*page
, unsigned int len
, struct iattr
*sattr
)
3700 struct nfs4_exception exception
= { };
3701 struct nfs4_label l
, *label
= NULL
;
3704 label
= nfs4_label_init_security(dir
, dentry
, sattr
, &l
);
3707 err
= _nfs4_proc_symlink(dir
, dentry
, page
, len
, sattr
, label
);
3708 trace_nfs4_symlink(dir
, &dentry
->d_name
, err
);
3709 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
3711 } while (exception
.retry
);
3713 nfs4_label_release_security(label
);
3717 static int _nfs4_proc_mkdir(struct inode
*dir
, struct dentry
*dentry
,
3718 struct iattr
*sattr
, struct nfs4_label
*label
)
3720 struct nfs4_createdata
*data
;
3721 int status
= -ENOMEM
;
3723 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4DIR
);
3727 data
->arg
.label
= label
;
3728 status
= nfs4_do_create(dir
, dentry
, data
);
3730 nfs4_free_createdata(data
);
3735 static int nfs4_proc_mkdir(struct inode
*dir
, struct dentry
*dentry
,
3736 struct iattr
*sattr
)
3738 struct nfs4_exception exception
= { };
3739 struct nfs4_label l
, *label
= NULL
;
3742 label
= nfs4_label_init_security(dir
, dentry
, sattr
, &l
);
3744 sattr
->ia_mode
&= ~current_umask();
3746 err
= _nfs4_proc_mkdir(dir
, dentry
, sattr
, label
);
3747 trace_nfs4_mkdir(dir
, &dentry
->d_name
, err
);
3748 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
3750 } while (exception
.retry
);
3751 nfs4_label_release_security(label
);
3756 static int _nfs4_proc_readdir(struct dentry
*dentry
, struct rpc_cred
*cred
,
3757 u64 cookie
, struct page
**pages
, unsigned int count
, int plus
)
3759 struct inode
*dir
= dentry
->d_inode
;
3760 struct nfs4_readdir_arg args
= {
3765 .bitmask
= NFS_SERVER(dentry
->d_inode
)->attr_bitmask
,
3768 struct nfs4_readdir_res res
;
3769 struct rpc_message msg
= {
3770 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READDIR
],
3777 dprintk("%s: dentry = %pd2, cookie = %Lu\n", __func__
,
3779 (unsigned long long)cookie
);
3780 nfs4_setup_readdir(cookie
, NFS_I(dir
)->cookieverf
, dentry
, &args
);
3781 res
.pgbase
= args
.pgbase
;
3782 status
= nfs4_call_sync(NFS_SERVER(dir
)->client
, NFS_SERVER(dir
), &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3784 memcpy(NFS_I(dir
)->cookieverf
, res
.verifier
.data
, NFS4_VERIFIER_SIZE
);
3785 status
+= args
.pgbase
;
3788 nfs_invalidate_atime(dir
);
3790 dprintk("%s: returns %d\n", __func__
, status
);
3794 static int nfs4_proc_readdir(struct dentry
*dentry
, struct rpc_cred
*cred
,
3795 u64 cookie
, struct page
**pages
, unsigned int count
, int plus
)
3797 struct nfs4_exception exception
= { };
3800 err
= _nfs4_proc_readdir(dentry
, cred
, cookie
,
3801 pages
, count
, plus
);
3802 trace_nfs4_readdir(dentry
->d_inode
, err
);
3803 err
= nfs4_handle_exception(NFS_SERVER(dentry
->d_inode
), err
,
3805 } while (exception
.retry
);
3809 static int _nfs4_proc_mknod(struct inode
*dir
, struct dentry
*dentry
,
3810 struct iattr
*sattr
, struct nfs4_label
*label
, dev_t rdev
)
3812 struct nfs4_createdata
*data
;
3813 int mode
= sattr
->ia_mode
;
3814 int status
= -ENOMEM
;
3816 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4SOCK
);
3821 data
->arg
.ftype
= NF4FIFO
;
3822 else if (S_ISBLK(mode
)) {
3823 data
->arg
.ftype
= NF4BLK
;
3824 data
->arg
.u
.device
.specdata1
= MAJOR(rdev
);
3825 data
->arg
.u
.device
.specdata2
= MINOR(rdev
);
3827 else if (S_ISCHR(mode
)) {
3828 data
->arg
.ftype
= NF4CHR
;
3829 data
->arg
.u
.device
.specdata1
= MAJOR(rdev
);
3830 data
->arg
.u
.device
.specdata2
= MINOR(rdev
);
3831 } else if (!S_ISSOCK(mode
)) {
3836 data
->arg
.label
= label
;
3837 status
= nfs4_do_create(dir
, dentry
, data
);
3839 nfs4_free_createdata(data
);
3844 static int nfs4_proc_mknod(struct inode
*dir
, struct dentry
*dentry
,
3845 struct iattr
*sattr
, dev_t rdev
)
3847 struct nfs4_exception exception
= { };
3848 struct nfs4_label l
, *label
= NULL
;
3851 label
= nfs4_label_init_security(dir
, dentry
, sattr
, &l
);
3853 sattr
->ia_mode
&= ~current_umask();
3855 err
= _nfs4_proc_mknod(dir
, dentry
, sattr
, label
, rdev
);
3856 trace_nfs4_mknod(dir
, &dentry
->d_name
, err
);
3857 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
3859 } while (exception
.retry
);
3861 nfs4_label_release_security(label
);
3866 static int _nfs4_proc_statfs(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3867 struct nfs_fsstat
*fsstat
)
3869 struct nfs4_statfs_arg args
= {
3871 .bitmask
= server
->attr_bitmask
,
3873 struct nfs4_statfs_res res
= {
3876 struct rpc_message msg
= {
3877 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_STATFS
],
3882 nfs_fattr_init(fsstat
->fattr
);
3883 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3886 static int nfs4_proc_statfs(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsstat
*fsstat
)
3888 struct nfs4_exception exception
= { };
3891 err
= nfs4_handle_exception(server
,
3892 _nfs4_proc_statfs(server
, fhandle
, fsstat
),
3894 } while (exception
.retry
);
3898 static int _nfs4_do_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3899 struct nfs_fsinfo
*fsinfo
)
3901 struct nfs4_fsinfo_arg args
= {
3903 .bitmask
= server
->attr_bitmask
,
3905 struct nfs4_fsinfo_res res
= {
3908 struct rpc_message msg
= {
3909 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FSINFO
],
3914 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3917 static int nfs4_do_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsinfo
*fsinfo
)
3919 struct nfs4_exception exception
= { };
3920 unsigned long now
= jiffies
;
3924 err
= _nfs4_do_fsinfo(server
, fhandle
, fsinfo
);
3925 trace_nfs4_fsinfo(server
, fhandle
, fsinfo
->fattr
, err
);
3927 struct nfs_client
*clp
= server
->nfs_client
;
3929 spin_lock(&clp
->cl_lock
);
3930 clp
->cl_lease_time
= fsinfo
->lease_time
* HZ
;
3931 clp
->cl_last_renewal
= now
;
3932 spin_unlock(&clp
->cl_lock
);
3935 err
= nfs4_handle_exception(server
, err
, &exception
);
3936 } while (exception
.retry
);
3940 static int nfs4_proc_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsinfo
*fsinfo
)
3944 nfs_fattr_init(fsinfo
->fattr
);
3945 error
= nfs4_do_fsinfo(server
, fhandle
, fsinfo
);
3947 /* block layout checks this! */
3948 server
->pnfs_blksize
= fsinfo
->blksize
;
3949 set_pnfs_layoutdriver(server
, fhandle
, fsinfo
->layouttype
);
3955 static int _nfs4_proc_pathconf(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3956 struct nfs_pathconf
*pathconf
)
3958 struct nfs4_pathconf_arg args
= {
3960 .bitmask
= server
->attr_bitmask
,
3962 struct nfs4_pathconf_res res
= {
3963 .pathconf
= pathconf
,
3965 struct rpc_message msg
= {
3966 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_PATHCONF
],
3971 /* None of the pathconf attributes are mandatory to implement */
3972 if ((args
.bitmask
[0] & nfs4_pathconf_bitmap
[0]) == 0) {
3973 memset(pathconf
, 0, sizeof(*pathconf
));
3977 nfs_fattr_init(pathconf
->fattr
);
3978 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3981 static int nfs4_proc_pathconf(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3982 struct nfs_pathconf
*pathconf
)
3984 struct nfs4_exception exception
= { };
3988 err
= nfs4_handle_exception(server
,
3989 _nfs4_proc_pathconf(server
, fhandle
, pathconf
),
3991 } while (exception
.retry
);
3995 int nfs4_set_rw_stateid(nfs4_stateid
*stateid
,
3996 const struct nfs_open_context
*ctx
,
3997 const struct nfs_lock_context
*l_ctx
,
4000 const struct nfs_lockowner
*lockowner
= NULL
;
4003 lockowner
= &l_ctx
->lockowner
;
4004 return nfs4_select_rw_stateid(stateid
, ctx
->state
, fmode
, lockowner
);
4006 EXPORT_SYMBOL_GPL(nfs4_set_rw_stateid
);
4008 static bool nfs4_stateid_is_current(nfs4_stateid
*stateid
,
4009 const struct nfs_open_context
*ctx
,
4010 const struct nfs_lock_context
*l_ctx
,
4013 nfs4_stateid current_stateid
;
4015 /* If the current stateid represents a lost lock, then exit */
4016 if (nfs4_set_rw_stateid(¤t_stateid
, ctx
, l_ctx
, fmode
) == -EIO
)
4018 return nfs4_stateid_match(stateid
, ¤t_stateid
);
4021 static bool nfs4_error_stateid_expired(int err
)
4024 case -NFS4ERR_DELEG_REVOKED
:
4025 case -NFS4ERR_ADMIN_REVOKED
:
4026 case -NFS4ERR_BAD_STATEID
:
4027 case -NFS4ERR_STALE_STATEID
:
4028 case -NFS4ERR_OLD_STATEID
:
4029 case -NFS4ERR_OPENMODE
:
4030 case -NFS4ERR_EXPIRED
:
4036 void __nfs4_read_done_cb(struct nfs_pgio_data
*data
)
4038 nfs_invalidate_atime(data
->header
->inode
);
4041 static int nfs4_read_done_cb(struct rpc_task
*task
, struct nfs_pgio_data
*data
)
4043 struct nfs_server
*server
= NFS_SERVER(data
->header
->inode
);
4045 trace_nfs4_read(data
, task
->tk_status
);
4046 if (nfs4_async_handle_error(task
, server
, data
->args
.context
->state
) == -EAGAIN
) {
4047 rpc_restart_call_prepare(task
);
4051 __nfs4_read_done_cb(data
);
4052 if (task
->tk_status
> 0)
4053 renew_lease(server
, data
->timestamp
);
4057 static bool nfs4_read_stateid_changed(struct rpc_task
*task
,
4058 struct nfs_pgio_args
*args
)
4061 if (!nfs4_error_stateid_expired(task
->tk_status
) ||
4062 nfs4_stateid_is_current(&args
->stateid
,
4067 rpc_restart_call_prepare(task
);
4071 static int nfs4_read_done(struct rpc_task
*task
, struct nfs_pgio_data
*data
)
4074 dprintk("--> %s\n", __func__
);
4076 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
4078 if (nfs4_read_stateid_changed(task
, &data
->args
))
4080 return data
->pgio_done_cb
? data
->pgio_done_cb(task
, data
) :
4081 nfs4_read_done_cb(task
, data
);
4084 static void nfs4_proc_read_setup(struct nfs_pgio_data
*data
, struct rpc_message
*msg
)
4086 data
->timestamp
= jiffies
;
4087 data
->pgio_done_cb
= nfs4_read_done_cb
;
4088 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READ
];
4089 nfs4_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 0);
4092 static int nfs4_proc_pgio_rpc_prepare(struct rpc_task
*task
, struct nfs_pgio_data
*data
)
4094 if (nfs4_setup_sequence(NFS_SERVER(data
->header
->inode
),
4095 &data
->args
.seq_args
,
4099 if (nfs4_set_rw_stateid(&data
->args
.stateid
, data
->args
.context
,
4100 data
->args
.lock_context
, data
->header
->rw_ops
->rw_mode
) == -EIO
)
4102 if (unlikely(test_bit(NFS_CONTEXT_BAD
, &data
->args
.context
->flags
)))
4107 static int nfs4_write_done_cb(struct rpc_task
*task
, struct nfs_pgio_data
*data
)
4109 struct inode
*inode
= data
->header
->inode
;
4111 trace_nfs4_write(data
, task
->tk_status
);
4112 if (nfs4_async_handle_error(task
, NFS_SERVER(inode
), data
->args
.context
->state
) == -EAGAIN
) {
4113 rpc_restart_call_prepare(task
);
4116 if (task
->tk_status
>= 0) {
4117 renew_lease(NFS_SERVER(inode
), data
->timestamp
);
4118 nfs_post_op_update_inode_force_wcc(inode
, &data
->fattr
);
4123 static bool nfs4_write_stateid_changed(struct rpc_task
*task
,
4124 struct nfs_pgio_args
*args
)
4127 if (!nfs4_error_stateid_expired(task
->tk_status
) ||
4128 nfs4_stateid_is_current(&args
->stateid
,
4133 rpc_restart_call_prepare(task
);
4137 static int nfs4_write_done(struct rpc_task
*task
, struct nfs_pgio_data
*data
)
4139 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
4141 if (nfs4_write_stateid_changed(task
, &data
->args
))
4143 return data
->pgio_done_cb
? data
->pgio_done_cb(task
, data
) :
4144 nfs4_write_done_cb(task
, data
);
4148 bool nfs4_write_need_cache_consistency_data(const struct nfs_pgio_data
*data
)
4150 const struct nfs_pgio_header
*hdr
= data
->header
;
4152 /* Don't request attributes for pNFS or O_DIRECT writes */
4153 if (data
->ds_clp
!= NULL
|| hdr
->dreq
!= NULL
)
4155 /* Otherwise, request attributes if and only if we don't hold
4158 return nfs4_have_delegation(hdr
->inode
, FMODE_READ
) == 0;
4161 static void nfs4_proc_write_setup(struct nfs_pgio_data
*data
, struct rpc_message
*msg
)
4163 struct nfs_server
*server
= NFS_SERVER(data
->header
->inode
);
4165 if (!nfs4_write_need_cache_consistency_data(data
)) {
4166 data
->args
.bitmask
= NULL
;
4167 data
->res
.fattr
= NULL
;
4169 data
->args
.bitmask
= server
->cache_consistency_bitmask
;
4171 if (!data
->pgio_done_cb
)
4172 data
->pgio_done_cb
= nfs4_write_done_cb
;
4173 data
->res
.server
= server
;
4174 data
->timestamp
= jiffies
;
4176 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_WRITE
];
4177 nfs4_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
4180 static void nfs4_proc_commit_rpc_prepare(struct rpc_task
*task
, struct nfs_commit_data
*data
)
4182 nfs4_setup_sequence(NFS_SERVER(data
->inode
),
4183 &data
->args
.seq_args
,
4188 static int nfs4_commit_done_cb(struct rpc_task
*task
, struct nfs_commit_data
*data
)
4190 struct inode
*inode
= data
->inode
;
4192 trace_nfs4_commit(data
, task
->tk_status
);
4193 if (nfs4_async_handle_error(task
, NFS_SERVER(inode
), NULL
) == -EAGAIN
) {
4194 rpc_restart_call_prepare(task
);
4200 static int nfs4_commit_done(struct rpc_task
*task
, struct nfs_commit_data
*data
)
4202 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
4204 return data
->commit_done_cb(task
, data
);
4207 static void nfs4_proc_commit_setup(struct nfs_commit_data
*data
, struct rpc_message
*msg
)
4209 struct nfs_server
*server
= NFS_SERVER(data
->inode
);
4211 if (data
->commit_done_cb
== NULL
)
4212 data
->commit_done_cb
= nfs4_commit_done_cb
;
4213 data
->res
.server
= server
;
4214 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_COMMIT
];
4215 nfs4_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
4218 struct nfs4_renewdata
{
4219 struct nfs_client
*client
;
4220 unsigned long timestamp
;
4224 * nfs4_proc_async_renew(): This is not one of the nfs_rpc_ops; it is a special
4225 * standalone procedure for queueing an asynchronous RENEW.
4227 static void nfs4_renew_release(void *calldata
)
4229 struct nfs4_renewdata
*data
= calldata
;
4230 struct nfs_client
*clp
= data
->client
;
4232 if (atomic_read(&clp
->cl_count
) > 1)
4233 nfs4_schedule_state_renewal(clp
);
4234 nfs_put_client(clp
);
4238 static void nfs4_renew_done(struct rpc_task
*task
, void *calldata
)
4240 struct nfs4_renewdata
*data
= calldata
;
4241 struct nfs_client
*clp
= data
->client
;
4242 unsigned long timestamp
= data
->timestamp
;
4244 trace_nfs4_renew_async(clp
, task
->tk_status
);
4245 switch (task
->tk_status
) {
4248 case -NFS4ERR_LEASE_MOVED
:
4249 nfs4_schedule_lease_moved_recovery(clp
);
4252 /* Unless we're shutting down, schedule state recovery! */
4253 if (test_bit(NFS_CS_RENEWD
, &clp
->cl_res_state
) == 0)
4255 if (task
->tk_status
!= NFS4ERR_CB_PATH_DOWN
) {
4256 nfs4_schedule_lease_recovery(clp
);
4259 nfs4_schedule_path_down_recovery(clp
);
4261 do_renew_lease(clp
, timestamp
);
4264 static const struct rpc_call_ops nfs4_renew_ops
= {
4265 .rpc_call_done
= nfs4_renew_done
,
4266 .rpc_release
= nfs4_renew_release
,
4269 static int nfs4_proc_async_renew(struct nfs_client
*clp
, struct rpc_cred
*cred
, unsigned renew_flags
)
4271 struct rpc_message msg
= {
4272 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENEW
],
4276 struct nfs4_renewdata
*data
;
4278 if (renew_flags
== 0)
4280 if (!atomic_inc_not_zero(&clp
->cl_count
))
4282 data
= kmalloc(sizeof(*data
), GFP_NOFS
);
4286 data
->timestamp
= jiffies
;
4287 return rpc_call_async(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
,
4288 &nfs4_renew_ops
, data
);
4291 static int nfs4_proc_renew(struct nfs_client
*clp
, struct rpc_cred
*cred
)
4293 struct rpc_message msg
= {
4294 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENEW
],
4298 unsigned long now
= jiffies
;
4301 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
4304 do_renew_lease(clp
, now
);
4308 static inline int nfs4_server_supports_acls(struct nfs_server
*server
)
4310 return server
->caps
& NFS_CAP_ACLS
;
4313 /* Assuming that XATTR_SIZE_MAX is a multiple of PAGE_SIZE, and that
4314 * it's OK to put sizeof(void) * (XATTR_SIZE_MAX/PAGE_SIZE) bytes on
4317 #define NFS4ACL_MAXPAGES DIV_ROUND_UP(XATTR_SIZE_MAX, PAGE_SIZE)
4319 static int buf_to_pages_noslab(const void *buf
, size_t buflen
,
4320 struct page
**pages
, unsigned int *pgbase
)
4322 struct page
*newpage
, **spages
;
4328 len
= min_t(size_t, PAGE_SIZE
, buflen
);
4329 newpage
= alloc_page(GFP_KERNEL
);
4331 if (newpage
== NULL
)
4333 memcpy(page_address(newpage
), buf
, len
);
4338 } while (buflen
!= 0);
4344 __free_page(spages
[rc
-1]);
4348 struct nfs4_cached_acl
{
4354 static void nfs4_set_cached_acl(struct inode
*inode
, struct nfs4_cached_acl
*acl
)
4356 struct nfs_inode
*nfsi
= NFS_I(inode
);
4358 spin_lock(&inode
->i_lock
);
4359 kfree(nfsi
->nfs4_acl
);
4360 nfsi
->nfs4_acl
= acl
;
4361 spin_unlock(&inode
->i_lock
);
4364 static void nfs4_zap_acl_attr(struct inode
*inode
)
4366 nfs4_set_cached_acl(inode
, NULL
);
4369 static inline ssize_t
nfs4_read_cached_acl(struct inode
*inode
, char *buf
, size_t buflen
)
4371 struct nfs_inode
*nfsi
= NFS_I(inode
);
4372 struct nfs4_cached_acl
*acl
;
4375 spin_lock(&inode
->i_lock
);
4376 acl
= nfsi
->nfs4_acl
;
4379 if (buf
== NULL
) /* user is just asking for length */
4381 if (acl
->cached
== 0)
4383 ret
= -ERANGE
; /* see getxattr(2) man page */
4384 if (acl
->len
> buflen
)
4386 memcpy(buf
, acl
->data
, acl
->len
);
4390 spin_unlock(&inode
->i_lock
);
4394 static void nfs4_write_cached_acl(struct inode
*inode
, struct page
**pages
, size_t pgbase
, size_t acl_len
)
4396 struct nfs4_cached_acl
*acl
;
4397 size_t buflen
= sizeof(*acl
) + acl_len
;
4399 if (buflen
<= PAGE_SIZE
) {
4400 acl
= kmalloc(buflen
, GFP_KERNEL
);
4404 _copy_from_pages(acl
->data
, pages
, pgbase
, acl_len
);
4406 acl
= kmalloc(sizeof(*acl
), GFP_KERNEL
);
4413 nfs4_set_cached_acl(inode
, acl
);
4417 * The getxattr API returns the required buffer length when called with a
4418 * NULL buf. The NFSv4 acl tool then calls getxattr again after allocating
4419 * the required buf. On a NULL buf, we send a page of data to the server
4420 * guessing that the ACL request can be serviced by a page. If so, we cache
4421 * up to the page of ACL data, and the 2nd call to getxattr is serviced by
4422 * the cache. If not so, we throw away the page, and cache the required
4423 * length. The next getxattr call will then produce another round trip to
4424 * the server, this time with the input buf of the required size.
4426 static ssize_t
__nfs4_get_acl_uncached(struct inode
*inode
, void *buf
, size_t buflen
)
4428 struct page
*pages
[NFS4ACL_MAXPAGES
] = {NULL
, };
4429 struct nfs_getaclargs args
= {
4430 .fh
= NFS_FH(inode
),
4434 struct nfs_getaclres res
= {
4437 struct rpc_message msg
= {
4438 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETACL
],
4442 unsigned int npages
= DIV_ROUND_UP(buflen
, PAGE_SIZE
);
4443 int ret
= -ENOMEM
, i
;
4445 /* As long as we're doing a round trip to the server anyway,
4446 * let's be prepared for a page of acl data. */
4449 if (npages
> ARRAY_SIZE(pages
))
4452 for (i
= 0; i
< npages
; i
++) {
4453 pages
[i
] = alloc_page(GFP_KERNEL
);
4458 /* for decoding across pages */
4459 res
.acl_scratch
= alloc_page(GFP_KERNEL
);
4460 if (!res
.acl_scratch
)
4463 args
.acl_len
= npages
* PAGE_SIZE
;
4464 args
.acl_pgbase
= 0;
4466 dprintk("%s buf %p buflen %zu npages %d args.acl_len %zu\n",
4467 __func__
, buf
, buflen
, npages
, args
.acl_len
);
4468 ret
= nfs4_call_sync(NFS_SERVER(inode
)->client
, NFS_SERVER(inode
),
4469 &msg
, &args
.seq_args
, &res
.seq_res
, 0);
4473 /* Handle the case where the passed-in buffer is too short */
4474 if (res
.acl_flags
& NFS4_ACL_TRUNC
) {
4475 /* Did the user only issue a request for the acl length? */
4481 nfs4_write_cached_acl(inode
, pages
, res
.acl_data_offset
, res
.acl_len
);
4483 if (res
.acl_len
> buflen
) {
4487 _copy_from_pages(buf
, pages
, res
.acl_data_offset
, res
.acl_len
);
4492 for (i
= 0; i
< npages
; i
++)
4494 __free_page(pages
[i
]);
4495 if (res
.acl_scratch
)
4496 __free_page(res
.acl_scratch
);
4500 static ssize_t
nfs4_get_acl_uncached(struct inode
*inode
, void *buf
, size_t buflen
)
4502 struct nfs4_exception exception
= { };
4505 ret
= __nfs4_get_acl_uncached(inode
, buf
, buflen
);
4506 trace_nfs4_get_acl(inode
, ret
);
4509 ret
= nfs4_handle_exception(NFS_SERVER(inode
), ret
, &exception
);
4510 } while (exception
.retry
);
4514 static ssize_t
nfs4_proc_get_acl(struct inode
*inode
, void *buf
, size_t buflen
)
4516 struct nfs_server
*server
= NFS_SERVER(inode
);
4519 if (!nfs4_server_supports_acls(server
))
4521 ret
= nfs_revalidate_inode(server
, inode
);
4524 if (NFS_I(inode
)->cache_validity
& NFS_INO_INVALID_ACL
)
4525 nfs_zap_acl_cache(inode
);
4526 ret
= nfs4_read_cached_acl(inode
, buf
, buflen
);
4528 /* -ENOENT is returned if there is no ACL or if there is an ACL
4529 * but no cached acl data, just the acl length */
4531 return nfs4_get_acl_uncached(inode
, buf
, buflen
);
4534 static int __nfs4_proc_set_acl(struct inode
*inode
, const void *buf
, size_t buflen
)
4536 struct nfs_server
*server
= NFS_SERVER(inode
);
4537 struct page
*pages
[NFS4ACL_MAXPAGES
];
4538 struct nfs_setaclargs arg
= {
4539 .fh
= NFS_FH(inode
),
4543 struct nfs_setaclres res
;
4544 struct rpc_message msg
= {
4545 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETACL
],
4549 unsigned int npages
= DIV_ROUND_UP(buflen
, PAGE_SIZE
);
4552 if (!nfs4_server_supports_acls(server
))
4554 if (npages
> ARRAY_SIZE(pages
))
4556 i
= buf_to_pages_noslab(buf
, buflen
, arg
.acl_pages
, &arg
.acl_pgbase
);
4559 nfs4_inode_return_delegation(inode
);
4560 ret
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
4563 * Free each page after tx, so the only ref left is
4564 * held by the network stack
4567 put_page(pages
[i
-1]);
4570 * Acl update can result in inode attribute update.
4571 * so mark the attribute cache invalid.
4573 spin_lock(&inode
->i_lock
);
4574 NFS_I(inode
)->cache_validity
|= NFS_INO_INVALID_ATTR
;
4575 spin_unlock(&inode
->i_lock
);
4576 nfs_access_zap_cache(inode
);
4577 nfs_zap_acl_cache(inode
);
4581 static int nfs4_proc_set_acl(struct inode
*inode
, const void *buf
, size_t buflen
)
4583 struct nfs4_exception exception
= { };
4586 err
= __nfs4_proc_set_acl(inode
, buf
, buflen
);
4587 trace_nfs4_set_acl(inode
, err
);
4588 err
= nfs4_handle_exception(NFS_SERVER(inode
), err
,
4590 } while (exception
.retry
);
4594 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
4595 static int _nfs4_get_security_label(struct inode
*inode
, void *buf
,
4598 struct nfs_server
*server
= NFS_SERVER(inode
);
4599 struct nfs_fattr fattr
;
4600 struct nfs4_label label
= {0, 0, buflen
, buf
};
4602 u32 bitmask
[3] = { 0, 0, FATTR4_WORD2_SECURITY_LABEL
};
4603 struct nfs4_getattr_arg arg
= {
4604 .fh
= NFS_FH(inode
),
4607 struct nfs4_getattr_res res
= {
4612 struct rpc_message msg
= {
4613 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETATTR
],
4619 nfs_fattr_init(&fattr
);
4621 ret
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 0);
4624 if (!(fattr
.valid
& NFS_ATTR_FATTR_V4_SECURITY_LABEL
))
4626 if (buflen
< label
.len
)
4631 static int nfs4_get_security_label(struct inode
*inode
, void *buf
,
4634 struct nfs4_exception exception
= { };
4637 if (!nfs_server_capable(inode
, NFS_CAP_SECURITY_LABEL
))
4641 err
= _nfs4_get_security_label(inode
, buf
, buflen
);
4642 trace_nfs4_get_security_label(inode
, err
);
4643 err
= nfs4_handle_exception(NFS_SERVER(inode
), err
,
4645 } while (exception
.retry
);
4649 static int _nfs4_do_set_security_label(struct inode
*inode
,
4650 struct nfs4_label
*ilabel
,
4651 struct nfs_fattr
*fattr
,
4652 struct nfs4_label
*olabel
)
4655 struct iattr sattr
= {0};
4656 struct nfs_server
*server
= NFS_SERVER(inode
);
4657 const u32 bitmask
[3] = { 0, 0, FATTR4_WORD2_SECURITY_LABEL
};
4658 struct nfs_setattrargs arg
= {
4659 .fh
= NFS_FH(inode
),
4665 struct nfs_setattrres res
= {
4670 struct rpc_message msg
= {
4671 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETATTR
],
4677 nfs4_stateid_copy(&arg
.stateid
, &zero_stateid
);
4679 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
4681 dprintk("%s failed: %d\n", __func__
, status
);
4686 static int nfs4_do_set_security_label(struct inode
*inode
,
4687 struct nfs4_label
*ilabel
,
4688 struct nfs_fattr
*fattr
,
4689 struct nfs4_label
*olabel
)
4691 struct nfs4_exception exception
= { };
4695 err
= _nfs4_do_set_security_label(inode
, ilabel
,
4697 trace_nfs4_set_security_label(inode
, err
);
4698 err
= nfs4_handle_exception(NFS_SERVER(inode
), err
,
4700 } while (exception
.retry
);
4705 nfs4_set_security_label(struct dentry
*dentry
, const void *buf
, size_t buflen
)
4707 struct nfs4_label ilabel
, *olabel
= NULL
;
4708 struct nfs_fattr fattr
;
4709 struct rpc_cred
*cred
;
4710 struct inode
*inode
= dentry
->d_inode
;
4713 if (!nfs_server_capable(inode
, NFS_CAP_SECURITY_LABEL
))
4716 nfs_fattr_init(&fattr
);
4720 ilabel
.label
= (char *)buf
;
4721 ilabel
.len
= buflen
;
4723 cred
= rpc_lookup_cred();
4725 return PTR_ERR(cred
);
4727 olabel
= nfs4_label_alloc(NFS_SERVER(inode
), GFP_KERNEL
);
4728 if (IS_ERR(olabel
)) {
4729 status
= -PTR_ERR(olabel
);
4733 status
= nfs4_do_set_security_label(inode
, &ilabel
, &fattr
, olabel
);
4735 nfs_setsecurity(inode
, &fattr
, olabel
);
4737 nfs4_label_free(olabel
);
4742 #endif /* CONFIG_NFS_V4_SECURITY_LABEL */
4746 nfs4_async_handle_error(struct rpc_task
*task
, const struct nfs_server
*server
, struct nfs4_state
*state
)
4748 struct nfs_client
*clp
= server
->nfs_client
;
4750 if (task
->tk_status
>= 0)
4752 switch(task
->tk_status
) {
4753 case -NFS4ERR_DELEG_REVOKED
:
4754 case -NFS4ERR_ADMIN_REVOKED
:
4755 case -NFS4ERR_BAD_STATEID
:
4758 nfs_remove_bad_delegation(state
->inode
);
4759 case -NFS4ERR_OPENMODE
:
4762 if (nfs4_schedule_stateid_recovery(server
, state
) < 0)
4763 goto recovery_failed
;
4764 goto wait_on_recovery
;
4765 case -NFS4ERR_EXPIRED
:
4766 if (state
!= NULL
) {
4767 if (nfs4_schedule_stateid_recovery(server
, state
) < 0)
4768 goto recovery_failed
;
4770 case -NFS4ERR_STALE_STATEID
:
4771 case -NFS4ERR_STALE_CLIENTID
:
4772 nfs4_schedule_lease_recovery(clp
);
4773 goto wait_on_recovery
;
4774 case -NFS4ERR_MOVED
:
4775 if (nfs4_schedule_migration_recovery(server
) < 0)
4776 goto recovery_failed
;
4777 goto wait_on_recovery
;
4778 case -NFS4ERR_LEASE_MOVED
:
4779 nfs4_schedule_lease_moved_recovery(clp
);
4780 goto wait_on_recovery
;
4781 #if defined(CONFIG_NFS_V4_1)
4782 case -NFS4ERR_BADSESSION
:
4783 case -NFS4ERR_BADSLOT
:
4784 case -NFS4ERR_BAD_HIGH_SLOT
:
4785 case -NFS4ERR_DEADSESSION
:
4786 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
4787 case -NFS4ERR_SEQ_FALSE_RETRY
:
4788 case -NFS4ERR_SEQ_MISORDERED
:
4789 dprintk("%s ERROR %d, Reset session\n", __func__
,
4791 nfs4_schedule_session_recovery(clp
->cl_session
, task
->tk_status
);
4792 goto wait_on_recovery
;
4793 #endif /* CONFIG_NFS_V4_1 */
4794 case -NFS4ERR_DELAY
:
4795 nfs_inc_server_stats(server
, NFSIOS_DELAY
);
4796 case -NFS4ERR_GRACE
:
4797 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
4798 case -NFS4ERR_RETRY_UNCACHED_REP
:
4799 case -NFS4ERR_OLD_STATEID
:
4802 task
->tk_status
= nfs4_map_errors(task
->tk_status
);
4805 task
->tk_status
= -EIO
;
4808 rpc_sleep_on(&clp
->cl_rpcwaitq
, task
, NULL
);
4809 if (test_bit(NFS4CLNT_MANAGER_RUNNING
, &clp
->cl_state
) == 0)
4810 rpc_wake_up_queued_task(&clp
->cl_rpcwaitq
, task
);
4811 if (test_bit(NFS_MIG_FAILED
, &server
->mig_status
))
4812 goto recovery_failed
;
4814 task
->tk_status
= 0;
4818 static void nfs4_init_boot_verifier(const struct nfs_client
*clp
,
4819 nfs4_verifier
*bootverf
)
4823 if (test_bit(NFS4CLNT_PURGE_STATE
, &clp
->cl_state
)) {
4824 /* An impossible timestamp guarantees this value
4825 * will never match a generated boot time. */
4827 verf
[1] = cpu_to_be32(NSEC_PER_SEC
+ 1);
4829 struct nfs_net
*nn
= net_generic(clp
->cl_net
, nfs_net_id
);
4830 verf
[0] = cpu_to_be32(nn
->boot_time
.tv_sec
);
4831 verf
[1] = cpu_to_be32(nn
->boot_time
.tv_nsec
);
4833 memcpy(bootverf
->data
, verf
, sizeof(bootverf
->data
));
4837 nfs4_init_nonuniform_client_string(const struct nfs_client
*clp
,
4838 char *buf
, size_t len
)
4840 unsigned int result
;
4843 result
= scnprintf(buf
, len
, "Linux NFSv4.0 %s/%s %s",
4845 rpc_peeraddr2str(clp
->cl_rpcclient
,
4847 rpc_peeraddr2str(clp
->cl_rpcclient
,
4848 RPC_DISPLAY_PROTO
));
4854 nfs4_init_uniform_client_string(const struct nfs_client
*clp
,
4855 char *buf
, size_t len
)
4857 const char *nodename
= clp
->cl_rpcclient
->cl_nodename
;
4859 if (nfs4_client_id_uniquifier
[0] != '\0')
4860 return scnprintf(buf
, len
, "Linux NFSv%u.%u %s/%s",
4861 clp
->rpc_ops
->version
,
4862 clp
->cl_minorversion
,
4863 nfs4_client_id_uniquifier
,
4865 return scnprintf(buf
, len
, "Linux NFSv%u.%u %s",
4866 clp
->rpc_ops
->version
, clp
->cl_minorversion
,
4871 * nfs4_callback_up_net() starts only "tcp" and "tcp6" callback
4872 * services. Advertise one based on the address family of the
4876 nfs4_init_callback_netid(const struct nfs_client
*clp
, char *buf
, size_t len
)
4878 if (strchr(clp
->cl_ipaddr
, ':') != NULL
)
4879 return scnprintf(buf
, len
, "tcp6");
4881 return scnprintf(buf
, len
, "tcp");
4885 * nfs4_proc_setclientid - Negotiate client ID
4886 * @clp: state data structure
4887 * @program: RPC program for NFSv4 callback service
4888 * @port: IP port number for NFS4 callback service
4889 * @cred: RPC credential to use for this call
4890 * @res: where to place the result
4892 * Returns zero, a negative errno, or a negative NFS4ERR status code.
4894 int nfs4_proc_setclientid(struct nfs_client
*clp
, u32 program
,
4895 unsigned short port
, struct rpc_cred
*cred
,
4896 struct nfs4_setclientid_res
*res
)
4898 nfs4_verifier sc_verifier
;
4899 struct nfs4_setclientid setclientid
= {
4900 .sc_verifier
= &sc_verifier
,
4902 .sc_cb_ident
= clp
->cl_cb_ident
,
4904 struct rpc_message msg
= {
4905 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETCLIENTID
],
4906 .rpc_argp
= &setclientid
,
4912 /* nfs_client_id4 */
4913 nfs4_init_boot_verifier(clp
, &sc_verifier
);
4914 if (test_bit(NFS_CS_MIGRATION
, &clp
->cl_flags
))
4915 setclientid
.sc_name_len
=
4916 nfs4_init_uniform_client_string(clp
,
4917 setclientid
.sc_name
,
4918 sizeof(setclientid
.sc_name
));
4920 setclientid
.sc_name_len
=
4921 nfs4_init_nonuniform_client_string(clp
,
4922 setclientid
.sc_name
,
4923 sizeof(setclientid
.sc_name
));
4925 setclientid
.sc_netid_len
=
4926 nfs4_init_callback_netid(clp
,
4927 setclientid
.sc_netid
,
4928 sizeof(setclientid
.sc_netid
));
4929 setclientid
.sc_uaddr_len
= scnprintf(setclientid
.sc_uaddr
,
4930 sizeof(setclientid
.sc_uaddr
), "%s.%u.%u",
4931 clp
->cl_ipaddr
, port
>> 8, port
& 255);
4933 dprintk("NFS call setclientid auth=%s, '%.*s'\n",
4934 clp
->cl_rpcclient
->cl_auth
->au_ops
->au_name
,
4935 setclientid
.sc_name_len
, setclientid
.sc_name
);
4936 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
4937 trace_nfs4_setclientid(clp
, status
);
4938 dprintk("NFS reply setclientid: %d\n", status
);
4943 * nfs4_proc_setclientid_confirm - Confirm client ID
4944 * @clp: state data structure
4945 * @res: result of a previous SETCLIENTID
4946 * @cred: RPC credential to use for this call
4948 * Returns zero, a negative errno, or a negative NFS4ERR status code.
4950 int nfs4_proc_setclientid_confirm(struct nfs_client
*clp
,
4951 struct nfs4_setclientid_res
*arg
,
4952 struct rpc_cred
*cred
)
4954 struct rpc_message msg
= {
4955 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETCLIENTID_CONFIRM
],
4961 dprintk("NFS call setclientid_confirm auth=%s, (client ID %llx)\n",
4962 clp
->cl_rpcclient
->cl_auth
->au_ops
->au_name
,
4964 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
4965 trace_nfs4_setclientid_confirm(clp
, status
);
4966 dprintk("NFS reply setclientid_confirm: %d\n", status
);
4970 struct nfs4_delegreturndata
{
4971 struct nfs4_delegreturnargs args
;
4972 struct nfs4_delegreturnres res
;
4974 nfs4_stateid stateid
;
4975 unsigned long timestamp
;
4976 struct nfs_fattr fattr
;
4980 static void nfs4_delegreturn_done(struct rpc_task
*task
, void *calldata
)
4982 struct nfs4_delegreturndata
*data
= calldata
;
4984 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
4987 trace_nfs4_delegreturn_exit(&data
->args
, &data
->res
, task
->tk_status
);
4988 switch (task
->tk_status
) {
4990 renew_lease(data
->res
.server
, data
->timestamp
);
4992 case -NFS4ERR_ADMIN_REVOKED
:
4993 case -NFS4ERR_DELEG_REVOKED
:
4994 case -NFS4ERR_BAD_STATEID
:
4995 case -NFS4ERR_OLD_STATEID
:
4996 case -NFS4ERR_STALE_STATEID
:
4997 case -NFS4ERR_EXPIRED
:
4998 task
->tk_status
= 0;
5001 if (nfs4_async_handle_error(task
, data
->res
.server
, NULL
) ==
5003 rpc_restart_call_prepare(task
);
5007 data
->rpc_status
= task
->tk_status
;
5010 static void nfs4_delegreturn_release(void *calldata
)
5015 static void nfs4_delegreturn_prepare(struct rpc_task
*task
, void *data
)
5017 struct nfs4_delegreturndata
*d_data
;
5019 d_data
= (struct nfs4_delegreturndata
*)data
;
5021 nfs4_setup_sequence(d_data
->res
.server
,
5022 &d_data
->args
.seq_args
,
5023 &d_data
->res
.seq_res
,
5027 static const struct rpc_call_ops nfs4_delegreturn_ops
= {
5028 .rpc_call_prepare
= nfs4_delegreturn_prepare
,
5029 .rpc_call_done
= nfs4_delegreturn_done
,
5030 .rpc_release
= nfs4_delegreturn_release
,
5033 static int _nfs4_proc_delegreturn(struct inode
*inode
, struct rpc_cred
*cred
, const nfs4_stateid
*stateid
, int issync
)
5035 struct nfs4_delegreturndata
*data
;
5036 struct nfs_server
*server
= NFS_SERVER(inode
);
5037 struct rpc_task
*task
;
5038 struct rpc_message msg
= {
5039 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DELEGRETURN
],
5042 struct rpc_task_setup task_setup_data
= {
5043 .rpc_client
= server
->client
,
5044 .rpc_message
= &msg
,
5045 .callback_ops
= &nfs4_delegreturn_ops
,
5046 .flags
= RPC_TASK_ASYNC
,
5050 data
= kzalloc(sizeof(*data
), GFP_NOFS
);
5053 nfs4_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
5054 data
->args
.fhandle
= &data
->fh
;
5055 data
->args
.stateid
= &data
->stateid
;
5056 data
->args
.bitmask
= server
->cache_consistency_bitmask
;
5057 nfs_copy_fh(&data
->fh
, NFS_FH(inode
));
5058 nfs4_stateid_copy(&data
->stateid
, stateid
);
5059 data
->res
.fattr
= &data
->fattr
;
5060 data
->res
.server
= server
;
5061 nfs_fattr_init(data
->res
.fattr
);
5062 data
->timestamp
= jiffies
;
5063 data
->rpc_status
= 0;
5065 task_setup_data
.callback_data
= data
;
5066 msg
.rpc_argp
= &data
->args
;
5067 msg
.rpc_resp
= &data
->res
;
5068 task
= rpc_run_task(&task_setup_data
);
5070 return PTR_ERR(task
);
5073 status
= nfs4_wait_for_completion_rpc_task(task
);
5076 status
= data
->rpc_status
;
5078 nfs_post_op_update_inode_force_wcc(inode
, &data
->fattr
);
5080 nfs_refresh_inode(inode
, &data
->fattr
);
5086 int nfs4_proc_delegreturn(struct inode
*inode
, struct rpc_cred
*cred
, const nfs4_stateid
*stateid
, int issync
)
5088 struct nfs_server
*server
= NFS_SERVER(inode
);
5089 struct nfs4_exception exception
= { };
5092 err
= _nfs4_proc_delegreturn(inode
, cred
, stateid
, issync
);
5093 trace_nfs4_delegreturn(inode
, err
);
5095 case -NFS4ERR_STALE_STATEID
:
5096 case -NFS4ERR_EXPIRED
:
5100 err
= nfs4_handle_exception(server
, err
, &exception
);
5101 } while (exception
.retry
);
5105 #define NFS4_LOCK_MINTIMEOUT (1 * HZ)
5106 #define NFS4_LOCK_MAXTIMEOUT (30 * HZ)
5109 * sleep, with exponential backoff, and retry the LOCK operation.
5111 static unsigned long
5112 nfs4_set_lock_task_retry(unsigned long timeout
)
5114 freezable_schedule_timeout_killable_unsafe(timeout
);
5116 if (timeout
> NFS4_LOCK_MAXTIMEOUT
)
5117 return NFS4_LOCK_MAXTIMEOUT
;
5121 static int _nfs4_proc_getlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
5123 struct inode
*inode
= state
->inode
;
5124 struct nfs_server
*server
= NFS_SERVER(inode
);
5125 struct nfs_client
*clp
= server
->nfs_client
;
5126 struct nfs_lockt_args arg
= {
5127 .fh
= NFS_FH(inode
),
5130 struct nfs_lockt_res res
= {
5133 struct rpc_message msg
= {
5134 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCKT
],
5137 .rpc_cred
= state
->owner
->so_cred
,
5139 struct nfs4_lock_state
*lsp
;
5142 arg
.lock_owner
.clientid
= clp
->cl_clientid
;
5143 status
= nfs4_set_lock_state(state
, request
);
5146 lsp
= request
->fl_u
.nfs4_fl
.owner
;
5147 arg
.lock_owner
.id
= lsp
->ls_seqid
.owner_id
;
5148 arg
.lock_owner
.s_dev
= server
->s_dev
;
5149 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
5152 request
->fl_type
= F_UNLCK
;
5154 case -NFS4ERR_DENIED
:
5157 request
->fl_ops
->fl_release_private(request
);
5158 request
->fl_ops
= NULL
;
5163 static int nfs4_proc_getlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
5165 struct nfs4_exception exception
= { };
5169 err
= _nfs4_proc_getlk(state
, cmd
, request
);
5170 trace_nfs4_get_lock(request
, state
, cmd
, err
);
5171 err
= nfs4_handle_exception(NFS_SERVER(state
->inode
), err
,
5173 } while (exception
.retry
);
5177 static int do_vfs_lock(struct file
*file
, struct file_lock
*fl
)
5180 switch (fl
->fl_flags
& (FL_POSIX
|FL_FLOCK
)) {
5182 res
= posix_lock_file_wait(file
, fl
);
5185 res
= flock_lock_file_wait(file
, fl
);
5193 struct nfs4_unlockdata
{
5194 struct nfs_locku_args arg
;
5195 struct nfs_locku_res res
;
5196 struct nfs4_lock_state
*lsp
;
5197 struct nfs_open_context
*ctx
;
5198 struct file_lock fl
;
5199 const struct nfs_server
*server
;
5200 unsigned long timestamp
;
5203 static struct nfs4_unlockdata
*nfs4_alloc_unlockdata(struct file_lock
*fl
,
5204 struct nfs_open_context
*ctx
,
5205 struct nfs4_lock_state
*lsp
,
5206 struct nfs_seqid
*seqid
)
5208 struct nfs4_unlockdata
*p
;
5209 struct inode
*inode
= lsp
->ls_state
->inode
;
5211 p
= kzalloc(sizeof(*p
), GFP_NOFS
);
5214 p
->arg
.fh
= NFS_FH(inode
);
5216 p
->arg
.seqid
= seqid
;
5217 p
->res
.seqid
= seqid
;
5218 p
->arg
.stateid
= &lsp
->ls_stateid
;
5220 atomic_inc(&lsp
->ls_count
);
5221 /* Ensure we don't close file until we're done freeing locks! */
5222 p
->ctx
= get_nfs_open_context(ctx
);
5223 memcpy(&p
->fl
, fl
, sizeof(p
->fl
));
5224 p
->server
= NFS_SERVER(inode
);
5228 static void nfs4_locku_release_calldata(void *data
)
5230 struct nfs4_unlockdata
*calldata
= data
;
5231 nfs_free_seqid(calldata
->arg
.seqid
);
5232 nfs4_put_lock_state(calldata
->lsp
);
5233 put_nfs_open_context(calldata
->ctx
);
5237 static void nfs4_locku_done(struct rpc_task
*task
, void *data
)
5239 struct nfs4_unlockdata
*calldata
= data
;
5241 if (!nfs4_sequence_done(task
, &calldata
->res
.seq_res
))
5243 switch (task
->tk_status
) {
5245 nfs4_stateid_copy(&calldata
->lsp
->ls_stateid
,
5246 &calldata
->res
.stateid
);
5247 renew_lease(calldata
->server
, calldata
->timestamp
);
5249 case -NFS4ERR_BAD_STATEID
:
5250 case -NFS4ERR_OLD_STATEID
:
5251 case -NFS4ERR_STALE_STATEID
:
5252 case -NFS4ERR_EXPIRED
:
5255 if (nfs4_async_handle_error(task
, calldata
->server
, NULL
) == -EAGAIN
)
5256 rpc_restart_call_prepare(task
);
5258 nfs_release_seqid(calldata
->arg
.seqid
);
5261 static void nfs4_locku_prepare(struct rpc_task
*task
, void *data
)
5263 struct nfs4_unlockdata
*calldata
= data
;
5265 if (nfs_wait_on_sequence(calldata
->arg
.seqid
, task
) != 0)
5267 if (test_bit(NFS_LOCK_INITIALIZED
, &calldata
->lsp
->ls_flags
) == 0) {
5268 /* Note: exit _without_ running nfs4_locku_done */
5271 calldata
->timestamp
= jiffies
;
5272 if (nfs4_setup_sequence(calldata
->server
,
5273 &calldata
->arg
.seq_args
,
5274 &calldata
->res
.seq_res
,
5276 nfs_release_seqid(calldata
->arg
.seqid
);
5279 task
->tk_action
= NULL
;
5281 nfs4_sequence_done(task
, &calldata
->res
.seq_res
);
5284 static const struct rpc_call_ops nfs4_locku_ops
= {
5285 .rpc_call_prepare
= nfs4_locku_prepare
,
5286 .rpc_call_done
= nfs4_locku_done
,
5287 .rpc_release
= nfs4_locku_release_calldata
,
5290 static struct rpc_task
*nfs4_do_unlck(struct file_lock
*fl
,
5291 struct nfs_open_context
*ctx
,
5292 struct nfs4_lock_state
*lsp
,
5293 struct nfs_seqid
*seqid
)
5295 struct nfs4_unlockdata
*data
;
5296 struct rpc_message msg
= {
5297 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCKU
],
5298 .rpc_cred
= ctx
->cred
,
5300 struct rpc_task_setup task_setup_data
= {
5301 .rpc_client
= NFS_CLIENT(lsp
->ls_state
->inode
),
5302 .rpc_message
= &msg
,
5303 .callback_ops
= &nfs4_locku_ops
,
5304 .workqueue
= nfsiod_workqueue
,
5305 .flags
= RPC_TASK_ASYNC
,
5308 nfs4_state_protect(NFS_SERVER(lsp
->ls_state
->inode
)->nfs_client
,
5309 NFS_SP4_MACH_CRED_CLEANUP
, &task_setup_data
.rpc_client
, &msg
);
5311 /* Ensure this is an unlock - when canceling a lock, the
5312 * canceled lock is passed in, and it won't be an unlock.
5314 fl
->fl_type
= F_UNLCK
;
5316 data
= nfs4_alloc_unlockdata(fl
, ctx
, lsp
, seqid
);
5318 nfs_free_seqid(seqid
);
5319 return ERR_PTR(-ENOMEM
);
5322 nfs4_init_sequence(&data
->arg
.seq_args
, &data
->res
.seq_res
, 1);
5323 msg
.rpc_argp
= &data
->arg
;
5324 msg
.rpc_resp
= &data
->res
;
5325 task_setup_data
.callback_data
= data
;
5326 return rpc_run_task(&task_setup_data
);
5329 static int nfs4_proc_unlck(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
5331 struct inode
*inode
= state
->inode
;
5332 struct nfs4_state_owner
*sp
= state
->owner
;
5333 struct nfs_inode
*nfsi
= NFS_I(inode
);
5334 struct nfs_seqid
*seqid
;
5335 struct nfs4_lock_state
*lsp
;
5336 struct rpc_task
*task
;
5338 unsigned char fl_flags
= request
->fl_flags
;
5340 status
= nfs4_set_lock_state(state
, request
);
5341 /* Unlock _before_ we do the RPC call */
5342 request
->fl_flags
|= FL_EXISTS
;
5343 /* Exclude nfs_delegation_claim_locks() */
5344 mutex_lock(&sp
->so_delegreturn_mutex
);
5345 /* Exclude nfs4_reclaim_open_stateid() - note nesting! */
5346 down_read(&nfsi
->rwsem
);
5347 if (do_vfs_lock(request
->fl_file
, request
) == -ENOENT
) {
5348 up_read(&nfsi
->rwsem
);
5349 mutex_unlock(&sp
->so_delegreturn_mutex
);
5352 up_read(&nfsi
->rwsem
);
5353 mutex_unlock(&sp
->so_delegreturn_mutex
);
5356 /* Is this a delegated lock? */
5357 lsp
= request
->fl_u
.nfs4_fl
.owner
;
5358 if (test_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
) == 0)
5360 seqid
= nfs_alloc_seqid(&lsp
->ls_seqid
, GFP_KERNEL
);
5364 task
= nfs4_do_unlck(request
, nfs_file_open_context(request
->fl_file
), lsp
, seqid
);
5365 status
= PTR_ERR(task
);
5368 status
= nfs4_wait_for_completion_rpc_task(task
);
5371 request
->fl_flags
= fl_flags
;
5372 trace_nfs4_unlock(request
, state
, F_SETLK
, status
);
5376 struct nfs4_lockdata
{
5377 struct nfs_lock_args arg
;
5378 struct nfs_lock_res res
;
5379 struct nfs4_lock_state
*lsp
;
5380 struct nfs_open_context
*ctx
;
5381 struct file_lock fl
;
5382 unsigned long timestamp
;
5385 struct nfs_server
*server
;
5388 static struct nfs4_lockdata
*nfs4_alloc_lockdata(struct file_lock
*fl
,
5389 struct nfs_open_context
*ctx
, struct nfs4_lock_state
*lsp
,
5392 struct nfs4_lockdata
*p
;
5393 struct inode
*inode
= lsp
->ls_state
->inode
;
5394 struct nfs_server
*server
= NFS_SERVER(inode
);
5396 p
= kzalloc(sizeof(*p
), gfp_mask
);
5400 p
->arg
.fh
= NFS_FH(inode
);
5402 p
->arg
.open_seqid
= nfs_alloc_seqid(&lsp
->ls_state
->owner
->so_seqid
, gfp_mask
);
5403 if (p
->arg
.open_seqid
== NULL
)
5405 p
->arg
.lock_seqid
= nfs_alloc_seqid(&lsp
->ls_seqid
, gfp_mask
);
5406 if (p
->arg
.lock_seqid
== NULL
)
5407 goto out_free_seqid
;
5408 p
->arg
.lock_stateid
= &lsp
->ls_stateid
;
5409 p
->arg
.lock_owner
.clientid
= server
->nfs_client
->cl_clientid
;
5410 p
->arg
.lock_owner
.id
= lsp
->ls_seqid
.owner_id
;
5411 p
->arg
.lock_owner
.s_dev
= server
->s_dev
;
5412 p
->res
.lock_seqid
= p
->arg
.lock_seqid
;
5415 atomic_inc(&lsp
->ls_count
);
5416 p
->ctx
= get_nfs_open_context(ctx
);
5417 memcpy(&p
->fl
, fl
, sizeof(p
->fl
));
5420 nfs_free_seqid(p
->arg
.open_seqid
);
5426 static void nfs4_lock_prepare(struct rpc_task
*task
, void *calldata
)
5428 struct nfs4_lockdata
*data
= calldata
;
5429 struct nfs4_state
*state
= data
->lsp
->ls_state
;
5431 dprintk("%s: begin!\n", __func__
);
5432 if (nfs_wait_on_sequence(data
->arg
.lock_seqid
, task
) != 0)
5434 /* Do we need to do an open_to_lock_owner? */
5435 if (!(data
->arg
.lock_seqid
->sequence
->flags
& NFS_SEQID_CONFIRMED
)) {
5436 if (nfs_wait_on_sequence(data
->arg
.open_seqid
, task
) != 0) {
5437 goto out_release_lock_seqid
;
5439 data
->arg
.open_stateid
= &state
->open_stateid
;
5440 data
->arg
.new_lock_owner
= 1;
5441 data
->res
.open_seqid
= data
->arg
.open_seqid
;
5443 data
->arg
.new_lock_owner
= 0;
5444 if (!nfs4_valid_open_stateid(state
)) {
5445 data
->rpc_status
= -EBADF
;
5446 task
->tk_action
= NULL
;
5447 goto out_release_open_seqid
;
5449 data
->timestamp
= jiffies
;
5450 if (nfs4_setup_sequence(data
->server
,
5451 &data
->arg
.seq_args
,
5455 out_release_open_seqid
:
5456 nfs_release_seqid(data
->arg
.open_seqid
);
5457 out_release_lock_seqid
:
5458 nfs_release_seqid(data
->arg
.lock_seqid
);
5460 nfs4_sequence_done(task
, &data
->res
.seq_res
);
5461 dprintk("%s: done!, ret = %d\n", __func__
, data
->rpc_status
);
5464 static void nfs4_lock_done(struct rpc_task
*task
, void *calldata
)
5466 struct nfs4_lockdata
*data
= calldata
;
5468 dprintk("%s: begin!\n", __func__
);
5470 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
5473 data
->rpc_status
= task
->tk_status
;
5474 if (data
->arg
.new_lock_owner
!= 0) {
5475 if (data
->rpc_status
== 0)
5476 nfs_confirm_seqid(&data
->lsp
->ls_seqid
, 0);
5480 if (data
->rpc_status
== 0) {
5481 nfs4_stateid_copy(&data
->lsp
->ls_stateid
, &data
->res
.stateid
);
5482 set_bit(NFS_LOCK_INITIALIZED
, &data
->lsp
->ls_flags
);
5483 renew_lease(NFS_SERVER(data
->ctx
->dentry
->d_inode
), data
->timestamp
);
5486 dprintk("%s: done, ret = %d!\n", __func__
, data
->rpc_status
);
5489 static void nfs4_lock_release(void *calldata
)
5491 struct nfs4_lockdata
*data
= calldata
;
5493 dprintk("%s: begin!\n", __func__
);
5494 nfs_free_seqid(data
->arg
.open_seqid
);
5495 if (data
->cancelled
!= 0) {
5496 struct rpc_task
*task
;
5497 task
= nfs4_do_unlck(&data
->fl
, data
->ctx
, data
->lsp
,
5498 data
->arg
.lock_seqid
);
5500 rpc_put_task_async(task
);
5501 dprintk("%s: cancelling lock!\n", __func__
);
5503 nfs_free_seqid(data
->arg
.lock_seqid
);
5504 nfs4_put_lock_state(data
->lsp
);
5505 put_nfs_open_context(data
->ctx
);
5507 dprintk("%s: done!\n", __func__
);
5510 static const struct rpc_call_ops nfs4_lock_ops
= {
5511 .rpc_call_prepare
= nfs4_lock_prepare
,
5512 .rpc_call_done
= nfs4_lock_done
,
5513 .rpc_release
= nfs4_lock_release
,
5516 static void nfs4_handle_setlk_error(struct nfs_server
*server
, struct nfs4_lock_state
*lsp
, int new_lock_owner
, int error
)
5519 case -NFS4ERR_ADMIN_REVOKED
:
5520 case -NFS4ERR_BAD_STATEID
:
5521 lsp
->ls_seqid
.flags
&= ~NFS_SEQID_CONFIRMED
;
5522 if (new_lock_owner
!= 0 ||
5523 test_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
) != 0)
5524 nfs4_schedule_stateid_recovery(server
, lsp
->ls_state
);
5526 case -NFS4ERR_STALE_STATEID
:
5527 lsp
->ls_seqid
.flags
&= ~NFS_SEQID_CONFIRMED
;
5528 case -NFS4ERR_EXPIRED
:
5529 nfs4_schedule_lease_recovery(server
->nfs_client
);
5533 static int _nfs4_do_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*fl
, int recovery_type
)
5535 struct nfs4_lockdata
*data
;
5536 struct rpc_task
*task
;
5537 struct rpc_message msg
= {
5538 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCK
],
5539 .rpc_cred
= state
->owner
->so_cred
,
5541 struct rpc_task_setup task_setup_data
= {
5542 .rpc_client
= NFS_CLIENT(state
->inode
),
5543 .rpc_message
= &msg
,
5544 .callback_ops
= &nfs4_lock_ops
,
5545 .workqueue
= nfsiod_workqueue
,
5546 .flags
= RPC_TASK_ASYNC
,
5550 dprintk("%s: begin!\n", __func__
);
5551 data
= nfs4_alloc_lockdata(fl
, nfs_file_open_context(fl
->fl_file
),
5552 fl
->fl_u
.nfs4_fl
.owner
,
5553 recovery_type
== NFS_LOCK_NEW
? GFP_KERNEL
: GFP_NOFS
);
5557 data
->arg
.block
= 1;
5558 nfs4_init_sequence(&data
->arg
.seq_args
, &data
->res
.seq_res
, 1);
5559 msg
.rpc_argp
= &data
->arg
;
5560 msg
.rpc_resp
= &data
->res
;
5561 task_setup_data
.callback_data
= data
;
5562 if (recovery_type
> NFS_LOCK_NEW
) {
5563 if (recovery_type
== NFS_LOCK_RECLAIM
)
5564 data
->arg
.reclaim
= NFS_LOCK_RECLAIM
;
5565 nfs4_set_sequence_privileged(&data
->arg
.seq_args
);
5567 task
= rpc_run_task(&task_setup_data
);
5569 return PTR_ERR(task
);
5570 ret
= nfs4_wait_for_completion_rpc_task(task
);
5572 ret
= data
->rpc_status
;
5574 nfs4_handle_setlk_error(data
->server
, data
->lsp
,
5575 data
->arg
.new_lock_owner
, ret
);
5577 data
->cancelled
= 1;
5579 dprintk("%s: done, ret = %d!\n", __func__
, ret
);
5583 static int nfs4_lock_reclaim(struct nfs4_state
*state
, struct file_lock
*request
)
5585 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
5586 struct nfs4_exception exception
= {
5587 .inode
= state
->inode
,
5592 /* Cache the lock if possible... */
5593 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) != 0)
5595 err
= _nfs4_do_setlk(state
, F_SETLK
, request
, NFS_LOCK_RECLAIM
);
5596 trace_nfs4_lock_reclaim(request
, state
, F_SETLK
, err
);
5597 if (err
!= -NFS4ERR_DELAY
)
5599 nfs4_handle_exception(server
, err
, &exception
);
5600 } while (exception
.retry
);
5604 static int nfs4_lock_expired(struct nfs4_state
*state
, struct file_lock
*request
)
5606 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
5607 struct nfs4_exception exception
= {
5608 .inode
= state
->inode
,
5612 err
= nfs4_set_lock_state(state
, request
);
5615 if (!recover_lost_locks
) {
5616 set_bit(NFS_LOCK_LOST
, &request
->fl_u
.nfs4_fl
.owner
->ls_flags
);
5620 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) != 0)
5622 err
= _nfs4_do_setlk(state
, F_SETLK
, request
, NFS_LOCK_EXPIRED
);
5623 trace_nfs4_lock_expired(request
, state
, F_SETLK
, err
);
5627 case -NFS4ERR_GRACE
:
5628 case -NFS4ERR_DELAY
:
5629 nfs4_handle_exception(server
, err
, &exception
);
5632 } while (exception
.retry
);
5637 #if defined(CONFIG_NFS_V4_1)
5639 * nfs41_check_expired_locks - possibly free a lock stateid
5641 * @state: NFSv4 state for an inode
5643 * Returns NFS_OK if recovery for this stateid is now finished.
5644 * Otherwise a negative NFS4ERR value is returned.
5646 static int nfs41_check_expired_locks(struct nfs4_state
*state
)
5648 int status
, ret
= -NFS4ERR_BAD_STATEID
;
5649 struct nfs4_lock_state
*lsp
;
5650 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
5652 list_for_each_entry(lsp
, &state
->lock_states
, ls_locks
) {
5653 if (test_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
)) {
5654 struct rpc_cred
*cred
= lsp
->ls_state
->owner
->so_cred
;
5656 status
= nfs41_test_stateid(server
,
5659 trace_nfs4_test_lock_stateid(state
, lsp
, status
);
5660 if (status
!= NFS_OK
) {
5661 /* Free the stateid unless the server
5662 * informs us the stateid is unrecognized. */
5663 if (status
!= -NFS4ERR_BAD_STATEID
)
5664 nfs41_free_stateid(server
,
5667 clear_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
);
5676 static int nfs41_lock_expired(struct nfs4_state
*state
, struct file_lock
*request
)
5678 int status
= NFS_OK
;
5680 if (test_bit(LK_STATE_IN_USE
, &state
->flags
))
5681 status
= nfs41_check_expired_locks(state
);
5682 if (status
!= NFS_OK
)
5683 status
= nfs4_lock_expired(state
, request
);
5688 static int _nfs4_proc_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
5690 struct nfs4_state_owner
*sp
= state
->owner
;
5691 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
5692 unsigned char fl_flags
= request
->fl_flags
;
5694 int status
= -ENOLCK
;
5696 if ((fl_flags
& FL_POSIX
) &&
5697 !test_bit(NFS_STATE_POSIX_LOCKS
, &state
->flags
))
5699 /* Is this a delegated open? */
5700 status
= nfs4_set_lock_state(state
, request
);
5703 request
->fl_flags
|= FL_ACCESS
;
5704 status
= do_vfs_lock(request
->fl_file
, request
);
5707 down_read(&nfsi
->rwsem
);
5708 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
)) {
5709 /* Yes: cache locks! */
5710 /* ...but avoid races with delegation recall... */
5711 request
->fl_flags
= fl_flags
& ~FL_SLEEP
;
5712 status
= do_vfs_lock(request
->fl_file
, request
);
5715 seq
= raw_seqcount_begin(&sp
->so_reclaim_seqcount
);
5716 up_read(&nfsi
->rwsem
);
5717 status
= _nfs4_do_setlk(state
, cmd
, request
, NFS_LOCK_NEW
);
5720 down_read(&nfsi
->rwsem
);
5721 if (read_seqcount_retry(&sp
->so_reclaim_seqcount
, seq
)) {
5722 status
= -NFS4ERR_DELAY
;
5725 /* Note: we always want to sleep here! */
5726 request
->fl_flags
= fl_flags
| FL_SLEEP
;
5727 if (do_vfs_lock(request
->fl_file
, request
) < 0)
5728 printk(KERN_WARNING
"NFS: %s: VFS is out of sync with lock "
5729 "manager!\n", __func__
);
5731 up_read(&nfsi
->rwsem
);
5733 request
->fl_flags
= fl_flags
;
5737 static int nfs4_proc_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
5739 struct nfs4_exception exception
= {
5741 .inode
= state
->inode
,
5746 err
= _nfs4_proc_setlk(state
, cmd
, request
);
5747 trace_nfs4_set_lock(request
, state
, cmd
, err
);
5748 if (err
== -NFS4ERR_DENIED
)
5750 err
= nfs4_handle_exception(NFS_SERVER(state
->inode
),
5752 } while (exception
.retry
);
5757 nfs4_proc_lock(struct file
*filp
, int cmd
, struct file_lock
*request
)
5759 struct nfs_open_context
*ctx
;
5760 struct nfs4_state
*state
;
5761 unsigned long timeout
= NFS4_LOCK_MINTIMEOUT
;
5764 /* verify open state */
5765 ctx
= nfs_file_open_context(filp
);
5768 if (request
->fl_start
< 0 || request
->fl_end
< 0)
5771 if (IS_GETLK(cmd
)) {
5773 return nfs4_proc_getlk(state
, F_GETLK
, request
);
5777 if (!(IS_SETLK(cmd
) || IS_SETLKW(cmd
)))
5780 if (request
->fl_type
== F_UNLCK
) {
5782 return nfs4_proc_unlck(state
, cmd
, request
);
5789 * Don't rely on the VFS having checked the file open mode,
5790 * since it won't do this for flock() locks.
5792 switch (request
->fl_type
) {
5794 if (!(filp
->f_mode
& FMODE_READ
))
5798 if (!(filp
->f_mode
& FMODE_WRITE
))
5803 status
= nfs4_proc_setlk(state
, cmd
, request
);
5804 if ((status
!= -EAGAIN
) || IS_SETLK(cmd
))
5806 timeout
= nfs4_set_lock_task_retry(timeout
);
5807 status
= -ERESTARTSYS
;
5810 } while(status
< 0);
5814 int nfs4_lock_delegation_recall(struct file_lock
*fl
, struct nfs4_state
*state
, const nfs4_stateid
*stateid
)
5816 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
5819 err
= nfs4_set_lock_state(state
, fl
);
5822 err
= _nfs4_do_setlk(state
, F_SETLK
, fl
, NFS_LOCK_NEW
);
5823 return nfs4_handle_delegation_recall_error(server
, state
, stateid
, err
);
5826 struct nfs_release_lockowner_data
{
5827 struct nfs4_lock_state
*lsp
;
5828 struct nfs_server
*server
;
5829 struct nfs_release_lockowner_args args
;
5830 struct nfs_release_lockowner_res res
;
5831 unsigned long timestamp
;
5834 static void nfs4_release_lockowner_prepare(struct rpc_task
*task
, void *calldata
)
5836 struct nfs_release_lockowner_data
*data
= calldata
;
5837 nfs40_setup_sequence(data
->server
,
5838 &data
->args
.seq_args
, &data
->res
.seq_res
, task
);
5839 data
->timestamp
= jiffies
;
5842 static void nfs4_release_lockowner_done(struct rpc_task
*task
, void *calldata
)
5844 struct nfs_release_lockowner_data
*data
= calldata
;
5845 struct nfs_server
*server
= data
->server
;
5847 nfs40_sequence_done(task
, &data
->res
.seq_res
);
5849 switch (task
->tk_status
) {
5851 renew_lease(server
, data
->timestamp
);
5853 case -NFS4ERR_STALE_CLIENTID
:
5854 case -NFS4ERR_EXPIRED
:
5855 case -NFS4ERR_LEASE_MOVED
:
5856 case -NFS4ERR_DELAY
:
5857 if (nfs4_async_handle_error(task
, server
, NULL
) == -EAGAIN
)
5858 rpc_restart_call_prepare(task
);
5862 static void nfs4_release_lockowner_release(void *calldata
)
5864 struct nfs_release_lockowner_data
*data
= calldata
;
5865 nfs4_free_lock_state(data
->server
, data
->lsp
);
5869 static const struct rpc_call_ops nfs4_release_lockowner_ops
= {
5870 .rpc_call_prepare
= nfs4_release_lockowner_prepare
,
5871 .rpc_call_done
= nfs4_release_lockowner_done
,
5872 .rpc_release
= nfs4_release_lockowner_release
,
5875 static int nfs4_release_lockowner(struct nfs_server
*server
, struct nfs4_lock_state
*lsp
)
5877 struct nfs_release_lockowner_data
*data
;
5878 struct rpc_message msg
= {
5879 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RELEASE_LOCKOWNER
],
5882 if (server
->nfs_client
->cl_mvops
->minor_version
!= 0)
5885 data
= kmalloc(sizeof(*data
), GFP_NOFS
);
5889 data
->server
= server
;
5890 data
->args
.lock_owner
.clientid
= server
->nfs_client
->cl_clientid
;
5891 data
->args
.lock_owner
.id
= lsp
->ls_seqid
.owner_id
;
5892 data
->args
.lock_owner
.s_dev
= server
->s_dev
;
5894 msg
.rpc_argp
= &data
->args
;
5895 msg
.rpc_resp
= &data
->res
;
5896 nfs4_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 0);
5897 rpc_call_async(server
->client
, &msg
, 0, &nfs4_release_lockowner_ops
, data
);
5901 #define XATTR_NAME_NFSV4_ACL "system.nfs4_acl"
5903 static int nfs4_xattr_set_nfs4_acl(struct dentry
*dentry
, const char *key
,
5904 const void *buf
, size_t buflen
,
5905 int flags
, int type
)
5907 if (strcmp(key
, "") != 0)
5910 return nfs4_proc_set_acl(dentry
->d_inode
, buf
, buflen
);
5913 static int nfs4_xattr_get_nfs4_acl(struct dentry
*dentry
, const char *key
,
5914 void *buf
, size_t buflen
, int type
)
5916 if (strcmp(key
, "") != 0)
5919 return nfs4_proc_get_acl(dentry
->d_inode
, buf
, buflen
);
5922 static size_t nfs4_xattr_list_nfs4_acl(struct dentry
*dentry
, char *list
,
5923 size_t list_len
, const char *name
,
5924 size_t name_len
, int type
)
5926 size_t len
= sizeof(XATTR_NAME_NFSV4_ACL
);
5928 if (!nfs4_server_supports_acls(NFS_SERVER(dentry
->d_inode
)))
5931 if (list
&& len
<= list_len
)
5932 memcpy(list
, XATTR_NAME_NFSV4_ACL
, len
);
5936 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
5937 static inline int nfs4_server_supports_labels(struct nfs_server
*server
)
5939 return server
->caps
& NFS_CAP_SECURITY_LABEL
;
5942 static int nfs4_xattr_set_nfs4_label(struct dentry
*dentry
, const char *key
,
5943 const void *buf
, size_t buflen
,
5944 int flags
, int type
)
5946 if (security_ismaclabel(key
))
5947 return nfs4_set_security_label(dentry
, buf
, buflen
);
5952 static int nfs4_xattr_get_nfs4_label(struct dentry
*dentry
, const char *key
,
5953 void *buf
, size_t buflen
, int type
)
5955 if (security_ismaclabel(key
))
5956 return nfs4_get_security_label(dentry
->d_inode
, buf
, buflen
);
5960 static size_t nfs4_xattr_list_nfs4_label(struct dentry
*dentry
, char *list
,
5961 size_t list_len
, const char *name
,
5962 size_t name_len
, int type
)
5966 if (nfs_server_capable(dentry
->d_inode
, NFS_CAP_SECURITY_LABEL
)) {
5967 len
= security_inode_listsecurity(dentry
->d_inode
, NULL
, 0);
5968 if (list
&& len
<= list_len
)
5969 security_inode_listsecurity(dentry
->d_inode
, list
, len
);
5974 static const struct xattr_handler nfs4_xattr_nfs4_label_handler
= {
5975 .prefix
= XATTR_SECURITY_PREFIX
,
5976 .list
= nfs4_xattr_list_nfs4_label
,
5977 .get
= nfs4_xattr_get_nfs4_label
,
5978 .set
= nfs4_xattr_set_nfs4_label
,
5984 * nfs_fhget will use either the mounted_on_fileid or the fileid
5986 static void nfs_fixup_referral_attributes(struct nfs_fattr
*fattr
)
5988 if (!(((fattr
->valid
& NFS_ATTR_FATTR_MOUNTED_ON_FILEID
) ||
5989 (fattr
->valid
& NFS_ATTR_FATTR_FILEID
)) &&
5990 (fattr
->valid
& NFS_ATTR_FATTR_FSID
) &&
5991 (fattr
->valid
& NFS_ATTR_FATTR_V4_LOCATIONS
)))
5994 fattr
->valid
|= NFS_ATTR_FATTR_TYPE
| NFS_ATTR_FATTR_MODE
|
5995 NFS_ATTR_FATTR_NLINK
| NFS_ATTR_FATTR_V4_REFERRAL
;
5996 fattr
->mode
= S_IFDIR
| S_IRUGO
| S_IXUGO
;
6000 static int _nfs4_proc_fs_locations(struct rpc_clnt
*client
, struct inode
*dir
,
6001 const struct qstr
*name
,
6002 struct nfs4_fs_locations
*fs_locations
,
6005 struct nfs_server
*server
= NFS_SERVER(dir
);
6007 [0] = FATTR4_WORD0_FSID
| FATTR4_WORD0_FS_LOCATIONS
,
6009 struct nfs4_fs_locations_arg args
= {
6010 .dir_fh
= NFS_FH(dir
),
6015 struct nfs4_fs_locations_res res
= {
6016 .fs_locations
= fs_locations
,
6018 struct rpc_message msg
= {
6019 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FS_LOCATIONS
],
6025 dprintk("%s: start\n", __func__
);
6027 /* Ask for the fileid of the absent filesystem if mounted_on_fileid
6028 * is not supported */
6029 if (NFS_SERVER(dir
)->attr_bitmask
[1] & FATTR4_WORD1_MOUNTED_ON_FILEID
)
6030 bitmask
[1] |= FATTR4_WORD1_MOUNTED_ON_FILEID
;
6032 bitmask
[0] |= FATTR4_WORD0_FILEID
;
6034 nfs_fattr_init(&fs_locations
->fattr
);
6035 fs_locations
->server
= server
;
6036 fs_locations
->nlocations
= 0;
6037 status
= nfs4_call_sync(client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
6038 dprintk("%s: returned status = %d\n", __func__
, status
);
6042 int nfs4_proc_fs_locations(struct rpc_clnt
*client
, struct inode
*dir
,
6043 const struct qstr
*name
,
6044 struct nfs4_fs_locations
*fs_locations
,
6047 struct nfs4_exception exception
= { };
6050 err
= _nfs4_proc_fs_locations(client
, dir
, name
,
6051 fs_locations
, page
);
6052 trace_nfs4_get_fs_locations(dir
, name
, err
);
6053 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
6055 } while (exception
.retry
);
6060 * This operation also signals the server that this client is
6061 * performing migration recovery. The server can stop returning
6062 * NFS4ERR_LEASE_MOVED to this client. A RENEW operation is
6063 * appended to this compound to identify the client ID which is
6064 * performing recovery.
6066 static int _nfs40_proc_get_locations(struct inode
*inode
,
6067 struct nfs4_fs_locations
*locations
,
6068 struct page
*page
, struct rpc_cred
*cred
)
6070 struct nfs_server
*server
= NFS_SERVER(inode
);
6071 struct rpc_clnt
*clnt
= server
->client
;
6073 [0] = FATTR4_WORD0_FSID
| FATTR4_WORD0_FS_LOCATIONS
,
6075 struct nfs4_fs_locations_arg args
= {
6076 .clientid
= server
->nfs_client
->cl_clientid
,
6077 .fh
= NFS_FH(inode
),
6080 .migration
= 1, /* skip LOOKUP */
6081 .renew
= 1, /* append RENEW */
6083 struct nfs4_fs_locations_res res
= {
6084 .fs_locations
= locations
,
6088 struct rpc_message msg
= {
6089 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FS_LOCATIONS
],
6094 unsigned long now
= jiffies
;
6097 nfs_fattr_init(&locations
->fattr
);
6098 locations
->server
= server
;
6099 locations
->nlocations
= 0;
6101 nfs4_init_sequence(&args
.seq_args
, &res
.seq_res
, 0);
6102 nfs4_set_sequence_privileged(&args
.seq_args
);
6103 status
= nfs4_call_sync_sequence(clnt
, server
, &msg
,
6104 &args
.seq_args
, &res
.seq_res
);
6108 renew_lease(server
, now
);
6112 #ifdef CONFIG_NFS_V4_1
6115 * This operation also signals the server that this client is
6116 * performing migration recovery. The server can stop asserting
6117 * SEQ4_STATUS_LEASE_MOVED for this client. The client ID
6118 * performing this operation is identified in the SEQUENCE
6119 * operation in this compound.
6121 * When the client supports GETATTR(fs_locations_info), it can
6122 * be plumbed in here.
6124 static int _nfs41_proc_get_locations(struct inode
*inode
,
6125 struct nfs4_fs_locations
*locations
,
6126 struct page
*page
, struct rpc_cred
*cred
)
6128 struct nfs_server
*server
= NFS_SERVER(inode
);
6129 struct rpc_clnt
*clnt
= server
->client
;
6131 [0] = FATTR4_WORD0_FSID
| FATTR4_WORD0_FS_LOCATIONS
,
6133 struct nfs4_fs_locations_arg args
= {
6134 .fh
= NFS_FH(inode
),
6137 .migration
= 1, /* skip LOOKUP */
6139 struct nfs4_fs_locations_res res
= {
6140 .fs_locations
= locations
,
6143 struct rpc_message msg
= {
6144 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FS_LOCATIONS
],
6151 nfs_fattr_init(&locations
->fattr
);
6152 locations
->server
= server
;
6153 locations
->nlocations
= 0;
6155 nfs4_init_sequence(&args
.seq_args
, &res
.seq_res
, 0);
6156 nfs4_set_sequence_privileged(&args
.seq_args
);
6157 status
= nfs4_call_sync_sequence(clnt
, server
, &msg
,
6158 &args
.seq_args
, &res
.seq_res
);
6159 if (status
== NFS4_OK
&&
6160 res
.seq_res
.sr_status_flags
& SEQ4_STATUS_LEASE_MOVED
)
6161 status
= -NFS4ERR_LEASE_MOVED
;
6165 #endif /* CONFIG_NFS_V4_1 */
6168 * nfs4_proc_get_locations - discover locations for a migrated FSID
6169 * @inode: inode on FSID that is migrating
6170 * @locations: result of query
6172 * @cred: credential to use for this operation
6174 * Returns NFS4_OK on success, a negative NFS4ERR status code if the
6175 * operation failed, or a negative errno if a local error occurred.
6177 * On success, "locations" is filled in, but if the server has
6178 * no locations information, NFS_ATTR_FATTR_V4_LOCATIONS is not
6181 * -NFS4ERR_LEASE_MOVED is returned if the server still has leases
6182 * from this client that require migration recovery.
6184 int nfs4_proc_get_locations(struct inode
*inode
,
6185 struct nfs4_fs_locations
*locations
,
6186 struct page
*page
, struct rpc_cred
*cred
)
6188 struct nfs_server
*server
= NFS_SERVER(inode
);
6189 struct nfs_client
*clp
= server
->nfs_client
;
6190 const struct nfs4_mig_recovery_ops
*ops
=
6191 clp
->cl_mvops
->mig_recovery_ops
;
6192 struct nfs4_exception exception
= { };
6195 dprintk("%s: FSID %llx:%llx on \"%s\"\n", __func__
,
6196 (unsigned long long)server
->fsid
.major
,
6197 (unsigned long long)server
->fsid
.minor
,
6199 nfs_display_fhandle(NFS_FH(inode
), __func__
);
6202 status
= ops
->get_locations(inode
, locations
, page
, cred
);
6203 if (status
!= -NFS4ERR_DELAY
)
6205 nfs4_handle_exception(server
, status
, &exception
);
6206 } while (exception
.retry
);
6211 * This operation also signals the server that this client is
6212 * performing "lease moved" recovery. The server can stop
6213 * returning NFS4ERR_LEASE_MOVED to this client. A RENEW operation
6214 * is appended to this compound to identify the client ID which is
6215 * performing recovery.
6217 static int _nfs40_proc_fsid_present(struct inode
*inode
, struct rpc_cred
*cred
)
6219 struct nfs_server
*server
= NFS_SERVER(inode
);
6220 struct nfs_client
*clp
= NFS_SERVER(inode
)->nfs_client
;
6221 struct rpc_clnt
*clnt
= server
->client
;
6222 struct nfs4_fsid_present_arg args
= {
6223 .fh
= NFS_FH(inode
),
6224 .clientid
= clp
->cl_clientid
,
6225 .renew
= 1, /* append RENEW */
6227 struct nfs4_fsid_present_res res
= {
6230 struct rpc_message msg
= {
6231 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FSID_PRESENT
],
6236 unsigned long now
= jiffies
;
6239 res
.fh
= nfs_alloc_fhandle();
6243 nfs4_init_sequence(&args
.seq_args
, &res
.seq_res
, 0);
6244 nfs4_set_sequence_privileged(&args
.seq_args
);
6245 status
= nfs4_call_sync_sequence(clnt
, server
, &msg
,
6246 &args
.seq_args
, &res
.seq_res
);
6247 nfs_free_fhandle(res
.fh
);
6251 do_renew_lease(clp
, now
);
6255 #ifdef CONFIG_NFS_V4_1
6258 * This operation also signals the server that this client is
6259 * performing "lease moved" recovery. The server can stop asserting
6260 * SEQ4_STATUS_LEASE_MOVED for this client. The client ID performing
6261 * this operation is identified in the SEQUENCE operation in this
6264 static int _nfs41_proc_fsid_present(struct inode
*inode
, struct rpc_cred
*cred
)
6266 struct nfs_server
*server
= NFS_SERVER(inode
);
6267 struct rpc_clnt
*clnt
= server
->client
;
6268 struct nfs4_fsid_present_arg args
= {
6269 .fh
= NFS_FH(inode
),
6271 struct nfs4_fsid_present_res res
= {
6273 struct rpc_message msg
= {
6274 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FSID_PRESENT
],
6281 res
.fh
= nfs_alloc_fhandle();
6285 nfs4_init_sequence(&args
.seq_args
, &res
.seq_res
, 0);
6286 nfs4_set_sequence_privileged(&args
.seq_args
);
6287 status
= nfs4_call_sync_sequence(clnt
, server
, &msg
,
6288 &args
.seq_args
, &res
.seq_res
);
6289 nfs_free_fhandle(res
.fh
);
6290 if (status
== NFS4_OK
&&
6291 res
.seq_res
.sr_status_flags
& SEQ4_STATUS_LEASE_MOVED
)
6292 status
= -NFS4ERR_LEASE_MOVED
;
6296 #endif /* CONFIG_NFS_V4_1 */
6299 * nfs4_proc_fsid_present - Is this FSID present or absent on server?
6300 * @inode: inode on FSID to check
6301 * @cred: credential to use for this operation
6303 * Server indicates whether the FSID is present, moved, or not
6304 * recognized. This operation is necessary to clear a LEASE_MOVED
6305 * condition for this client ID.
6307 * Returns NFS4_OK if the FSID is present on this server,
6308 * -NFS4ERR_MOVED if the FSID is no longer present, a negative
6309 * NFS4ERR code if some error occurred on the server, or a
6310 * negative errno if a local failure occurred.
6312 int nfs4_proc_fsid_present(struct inode
*inode
, struct rpc_cred
*cred
)
6314 struct nfs_server
*server
= NFS_SERVER(inode
);
6315 struct nfs_client
*clp
= server
->nfs_client
;
6316 const struct nfs4_mig_recovery_ops
*ops
=
6317 clp
->cl_mvops
->mig_recovery_ops
;
6318 struct nfs4_exception exception
= { };
6321 dprintk("%s: FSID %llx:%llx on \"%s\"\n", __func__
,
6322 (unsigned long long)server
->fsid
.major
,
6323 (unsigned long long)server
->fsid
.minor
,
6325 nfs_display_fhandle(NFS_FH(inode
), __func__
);
6328 status
= ops
->fsid_present(inode
, cred
);
6329 if (status
!= -NFS4ERR_DELAY
)
6331 nfs4_handle_exception(server
, status
, &exception
);
6332 } while (exception
.retry
);
6337 * If 'use_integrity' is true and the state managment nfs_client
6338 * cl_rpcclient is using krb5i/p, use the integrity protected cl_rpcclient
6339 * and the machine credential as per RFC3530bis and RFC5661 Security
6340 * Considerations sections. Otherwise, just use the user cred with the
6341 * filesystem's rpc_client.
6343 static int _nfs4_proc_secinfo(struct inode
*dir
, const struct qstr
*name
, struct nfs4_secinfo_flavors
*flavors
, bool use_integrity
)
6346 struct nfs4_secinfo_arg args
= {
6347 .dir_fh
= NFS_FH(dir
),
6350 struct nfs4_secinfo_res res
= {
6353 struct rpc_message msg
= {
6354 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SECINFO
],
6358 struct rpc_clnt
*clnt
= NFS_SERVER(dir
)->client
;
6359 struct rpc_cred
*cred
= NULL
;
6361 if (use_integrity
) {
6362 clnt
= NFS_SERVER(dir
)->nfs_client
->cl_rpcclient
;
6363 cred
= nfs4_get_clid_cred(NFS_SERVER(dir
)->nfs_client
);
6364 msg
.rpc_cred
= cred
;
6367 dprintk("NFS call secinfo %s\n", name
->name
);
6369 nfs4_state_protect(NFS_SERVER(dir
)->nfs_client
,
6370 NFS_SP4_MACH_CRED_SECINFO
, &clnt
, &msg
);
6372 status
= nfs4_call_sync(clnt
, NFS_SERVER(dir
), &msg
, &args
.seq_args
,
6374 dprintk("NFS reply secinfo: %d\n", status
);
6382 int nfs4_proc_secinfo(struct inode
*dir
, const struct qstr
*name
,
6383 struct nfs4_secinfo_flavors
*flavors
)
6385 struct nfs4_exception exception
= { };
6388 err
= -NFS4ERR_WRONGSEC
;
6390 /* try to use integrity protection with machine cred */
6391 if (_nfs4_is_integrity_protected(NFS_SERVER(dir
)->nfs_client
))
6392 err
= _nfs4_proc_secinfo(dir
, name
, flavors
, true);
6395 * if unable to use integrity protection, or SECINFO with
6396 * integrity protection returns NFS4ERR_WRONGSEC (which is
6397 * disallowed by spec, but exists in deployed servers) use
6398 * the current filesystem's rpc_client and the user cred.
6400 if (err
== -NFS4ERR_WRONGSEC
)
6401 err
= _nfs4_proc_secinfo(dir
, name
, flavors
, false);
6403 trace_nfs4_secinfo(dir
, name
, err
);
6404 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
6406 } while (exception
.retry
);
6410 #ifdef CONFIG_NFS_V4_1
6412 * Check the exchange flags returned by the server for invalid flags, having
6413 * both PNFS and NON_PNFS flags set, and not having one of NON_PNFS, PNFS, or
6416 static int nfs4_check_cl_exchange_flags(u32 flags
)
6418 if (flags
& ~EXCHGID4_FLAG_MASK_R
)
6420 if ((flags
& EXCHGID4_FLAG_USE_PNFS_MDS
) &&
6421 (flags
& EXCHGID4_FLAG_USE_NON_PNFS
))
6423 if (!(flags
& (EXCHGID4_FLAG_MASK_PNFS
)))
6427 return -NFS4ERR_INVAL
;
6431 nfs41_same_server_scope(struct nfs41_server_scope
*a
,
6432 struct nfs41_server_scope
*b
)
6434 if (a
->server_scope_sz
== b
->server_scope_sz
&&
6435 memcmp(a
->server_scope
, b
->server_scope
, a
->server_scope_sz
) == 0)
6442 * nfs4_proc_bind_conn_to_session()
6444 * The 4.1 client currently uses the same TCP connection for the
6445 * fore and backchannel.
6447 int nfs4_proc_bind_conn_to_session(struct nfs_client
*clp
, struct rpc_cred
*cred
)
6450 struct nfs41_bind_conn_to_session_res res
;
6451 struct rpc_message msg
= {
6453 &nfs4_procedures
[NFSPROC4_CLNT_BIND_CONN_TO_SESSION
],
6459 dprintk("--> %s\n", __func__
);
6461 res
.session
= kzalloc(sizeof(struct nfs4_session
), GFP_NOFS
);
6462 if (unlikely(res
.session
== NULL
)) {
6467 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
6468 trace_nfs4_bind_conn_to_session(clp
, status
);
6470 if (memcmp(res
.session
->sess_id
.data
,
6471 clp
->cl_session
->sess_id
.data
, NFS4_MAX_SESSIONID_LEN
)) {
6472 dprintk("NFS: %s: Session ID mismatch\n", __func__
);
6476 if (res
.dir
!= NFS4_CDFS4_BOTH
) {
6477 dprintk("NFS: %s: Unexpected direction from server\n",
6482 if (res
.use_conn_in_rdma_mode
) {
6483 dprintk("NFS: %s: Server returned RDMA mode = true\n",
6492 dprintk("<-- %s status= %d\n", __func__
, status
);
6497 * Minimum set of SP4_MACH_CRED operations from RFC 5661 in the enforce map
6498 * and operations we'd like to see to enable certain features in the allow map
6500 static const struct nfs41_state_protection nfs4_sp4_mach_cred_request
= {
6501 .how
= SP4_MACH_CRED
,
6502 .enforce
.u
.words
= {
6503 [1] = 1 << (OP_BIND_CONN_TO_SESSION
- 32) |
6504 1 << (OP_EXCHANGE_ID
- 32) |
6505 1 << (OP_CREATE_SESSION
- 32) |
6506 1 << (OP_DESTROY_SESSION
- 32) |
6507 1 << (OP_DESTROY_CLIENTID
- 32)
6510 [0] = 1 << (OP_CLOSE
) |
6513 [1] = 1 << (OP_SECINFO
- 32) |
6514 1 << (OP_SECINFO_NO_NAME
- 32) |
6515 1 << (OP_TEST_STATEID
- 32) |
6516 1 << (OP_FREE_STATEID
- 32) |
6517 1 << (OP_WRITE
- 32)
6522 * Select the state protection mode for client `clp' given the server results
6523 * from exchange_id in `sp'.
6525 * Returns 0 on success, negative errno otherwise.
6527 static int nfs4_sp4_select_mode(struct nfs_client
*clp
,
6528 struct nfs41_state_protection
*sp
)
6530 static const u32 supported_enforce
[NFS4_OP_MAP_NUM_WORDS
] = {
6531 [1] = 1 << (OP_BIND_CONN_TO_SESSION
- 32) |
6532 1 << (OP_EXCHANGE_ID
- 32) |
6533 1 << (OP_CREATE_SESSION
- 32) |
6534 1 << (OP_DESTROY_SESSION
- 32) |
6535 1 << (OP_DESTROY_CLIENTID
- 32)
6539 if (sp
->how
== SP4_MACH_CRED
) {
6540 /* Print state protect result */
6541 dfprintk(MOUNT
, "Server SP4_MACH_CRED support:\n");
6542 for (i
= 0; i
<= LAST_NFS4_OP
; i
++) {
6543 if (test_bit(i
, sp
->enforce
.u
.longs
))
6544 dfprintk(MOUNT
, " enforce op %d\n", i
);
6545 if (test_bit(i
, sp
->allow
.u
.longs
))
6546 dfprintk(MOUNT
, " allow op %d\n", i
);
6549 /* make sure nothing is on enforce list that isn't supported */
6550 for (i
= 0; i
< NFS4_OP_MAP_NUM_WORDS
; i
++) {
6551 if (sp
->enforce
.u
.words
[i
] & ~supported_enforce
[i
]) {
6552 dfprintk(MOUNT
, "sp4_mach_cred: disabled\n");
6558 * Minimal mode - state operations are allowed to use machine
6559 * credential. Note this already happens by default, so the
6560 * client doesn't have to do anything more than the negotiation.
6562 * NOTE: we don't care if EXCHANGE_ID is in the list -
6563 * we're already using the machine cred for exchange_id
6564 * and will never use a different cred.
6566 if (test_bit(OP_BIND_CONN_TO_SESSION
, sp
->enforce
.u
.longs
) &&
6567 test_bit(OP_CREATE_SESSION
, sp
->enforce
.u
.longs
) &&
6568 test_bit(OP_DESTROY_SESSION
, sp
->enforce
.u
.longs
) &&
6569 test_bit(OP_DESTROY_CLIENTID
, sp
->enforce
.u
.longs
)) {
6570 dfprintk(MOUNT
, "sp4_mach_cred:\n");
6571 dfprintk(MOUNT
, " minimal mode enabled\n");
6572 set_bit(NFS_SP4_MACH_CRED_MINIMAL
, &clp
->cl_sp4_flags
);
6574 dfprintk(MOUNT
, "sp4_mach_cred: disabled\n");
6578 if (test_bit(OP_CLOSE
, sp
->allow
.u
.longs
) &&
6579 test_bit(OP_LOCKU
, sp
->allow
.u
.longs
)) {
6580 dfprintk(MOUNT
, " cleanup mode enabled\n");
6581 set_bit(NFS_SP4_MACH_CRED_CLEANUP
, &clp
->cl_sp4_flags
);
6584 if (test_bit(OP_SECINFO
, sp
->allow
.u
.longs
) &&
6585 test_bit(OP_SECINFO_NO_NAME
, sp
->allow
.u
.longs
)) {
6586 dfprintk(MOUNT
, " secinfo mode enabled\n");
6587 set_bit(NFS_SP4_MACH_CRED_SECINFO
, &clp
->cl_sp4_flags
);
6590 if (test_bit(OP_TEST_STATEID
, sp
->allow
.u
.longs
) &&
6591 test_bit(OP_FREE_STATEID
, sp
->allow
.u
.longs
)) {
6592 dfprintk(MOUNT
, " stateid mode enabled\n");
6593 set_bit(NFS_SP4_MACH_CRED_STATEID
, &clp
->cl_sp4_flags
);
6596 if (test_bit(OP_WRITE
, sp
->allow
.u
.longs
)) {
6597 dfprintk(MOUNT
, " write mode enabled\n");
6598 set_bit(NFS_SP4_MACH_CRED_WRITE
, &clp
->cl_sp4_flags
);
6601 if (test_bit(OP_COMMIT
, sp
->allow
.u
.longs
)) {
6602 dfprintk(MOUNT
, " commit mode enabled\n");
6603 set_bit(NFS_SP4_MACH_CRED_COMMIT
, &clp
->cl_sp4_flags
);
6611 * _nfs4_proc_exchange_id()
6613 * Wrapper for EXCHANGE_ID operation.
6615 static int _nfs4_proc_exchange_id(struct nfs_client
*clp
, struct rpc_cred
*cred
,
6618 nfs4_verifier verifier
;
6619 struct nfs41_exchange_id_args args
= {
6620 .verifier
= &verifier
,
6622 #ifdef CONFIG_NFS_V4_1_MIGRATION
6623 .flags
= EXCHGID4_FLAG_SUPP_MOVED_REFER
|
6624 EXCHGID4_FLAG_BIND_PRINC_STATEID
|
6625 EXCHGID4_FLAG_SUPP_MOVED_MIGR
,
6627 .flags
= EXCHGID4_FLAG_SUPP_MOVED_REFER
|
6628 EXCHGID4_FLAG_BIND_PRINC_STATEID
,
6631 struct nfs41_exchange_id_res res
= {
6635 struct rpc_message msg
= {
6636 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_EXCHANGE_ID
],
6642 nfs4_init_boot_verifier(clp
, &verifier
);
6643 args
.id_len
= nfs4_init_uniform_client_string(clp
, args
.id
,
6645 dprintk("NFS call exchange_id auth=%s, '%.*s'\n",
6646 clp
->cl_rpcclient
->cl_auth
->au_ops
->au_name
,
6647 args
.id_len
, args
.id
);
6649 res
.server_owner
= kzalloc(sizeof(struct nfs41_server_owner
),
6651 if (unlikely(res
.server_owner
== NULL
)) {
6656 res
.server_scope
= kzalloc(sizeof(struct nfs41_server_scope
),
6658 if (unlikely(res
.server_scope
== NULL
)) {
6660 goto out_server_owner
;
6663 res
.impl_id
= kzalloc(sizeof(struct nfs41_impl_id
), GFP_NOFS
);
6664 if (unlikely(res
.impl_id
== NULL
)) {
6666 goto out_server_scope
;
6671 args
.state_protect
.how
= SP4_NONE
;
6675 args
.state_protect
= nfs4_sp4_mach_cred_request
;
6682 goto out_server_scope
;
6685 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
6686 trace_nfs4_exchange_id(clp
, status
);
6688 status
= nfs4_check_cl_exchange_flags(res
.flags
);
6691 status
= nfs4_sp4_select_mode(clp
, &res
.state_protect
);
6694 clp
->cl_clientid
= res
.clientid
;
6695 clp
->cl_exchange_flags
= (res
.flags
& ~EXCHGID4_FLAG_CONFIRMED_R
);
6696 if (!(res
.flags
& EXCHGID4_FLAG_CONFIRMED_R
))
6697 clp
->cl_seqid
= res
.seqid
;
6699 kfree(clp
->cl_serverowner
);
6700 clp
->cl_serverowner
= res
.server_owner
;
6701 res
.server_owner
= NULL
;
6703 /* use the most recent implementation id */
6704 kfree(clp
->cl_implid
);
6705 clp
->cl_implid
= res
.impl_id
;
6707 if (clp
->cl_serverscope
!= NULL
&&
6708 !nfs41_same_server_scope(clp
->cl_serverscope
,
6709 res
.server_scope
)) {
6710 dprintk("%s: server_scope mismatch detected\n",
6712 set_bit(NFS4CLNT_SERVER_SCOPE_MISMATCH
, &clp
->cl_state
);
6713 kfree(clp
->cl_serverscope
);
6714 clp
->cl_serverscope
= NULL
;
6717 if (clp
->cl_serverscope
== NULL
) {
6718 clp
->cl_serverscope
= res
.server_scope
;
6725 kfree(res
.server_owner
);
6727 kfree(res
.server_scope
);
6729 if (clp
->cl_implid
!= NULL
)
6730 dprintk("NFS reply exchange_id: Server Implementation ID: "
6731 "domain: %s, name: %s, date: %llu,%u\n",
6732 clp
->cl_implid
->domain
, clp
->cl_implid
->name
,
6733 clp
->cl_implid
->date
.seconds
,
6734 clp
->cl_implid
->date
.nseconds
);
6735 dprintk("NFS reply exchange_id: %d\n", status
);
6740 * nfs4_proc_exchange_id()
6742 * Returns zero, a negative errno, or a negative NFS4ERR status code.
6744 * Since the clientid has expired, all compounds using sessions
6745 * associated with the stale clientid will be returning
6746 * NFS4ERR_BADSESSION in the sequence operation, and will therefore
6747 * be in some phase of session reset.
6749 * Will attempt to negotiate SP4_MACH_CRED if krb5i / krb5p auth is used.
6751 int nfs4_proc_exchange_id(struct nfs_client
*clp
, struct rpc_cred
*cred
)
6753 rpc_authflavor_t authflavor
= clp
->cl_rpcclient
->cl_auth
->au_flavor
;
6756 /* try SP4_MACH_CRED if krb5i/p */
6757 if (authflavor
== RPC_AUTH_GSS_KRB5I
||
6758 authflavor
== RPC_AUTH_GSS_KRB5P
) {
6759 status
= _nfs4_proc_exchange_id(clp
, cred
, SP4_MACH_CRED
);
6765 return _nfs4_proc_exchange_id(clp
, cred
, SP4_NONE
);
6768 static int _nfs4_proc_destroy_clientid(struct nfs_client
*clp
,
6769 struct rpc_cred
*cred
)
6771 struct rpc_message msg
= {
6772 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DESTROY_CLIENTID
],
6778 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
6779 trace_nfs4_destroy_clientid(clp
, status
);
6781 dprintk("NFS: Got error %d from the server %s on "
6782 "DESTROY_CLIENTID.", status
, clp
->cl_hostname
);
6786 static int nfs4_proc_destroy_clientid(struct nfs_client
*clp
,
6787 struct rpc_cred
*cred
)
6792 for (loop
= NFS4_MAX_LOOP_ON_RECOVER
; loop
!= 0; loop
--) {
6793 ret
= _nfs4_proc_destroy_clientid(clp
, cred
);
6795 case -NFS4ERR_DELAY
:
6796 case -NFS4ERR_CLIENTID_BUSY
:
6806 int nfs4_destroy_clientid(struct nfs_client
*clp
)
6808 struct rpc_cred
*cred
;
6811 if (clp
->cl_mvops
->minor_version
< 1)
6813 if (clp
->cl_exchange_flags
== 0)
6815 if (clp
->cl_preserve_clid
)
6817 cred
= nfs4_get_clid_cred(clp
);
6818 ret
= nfs4_proc_destroy_clientid(clp
, cred
);
6823 case -NFS4ERR_STALE_CLIENTID
:
6824 clp
->cl_exchange_flags
= 0;
6830 struct nfs4_get_lease_time_data
{
6831 struct nfs4_get_lease_time_args
*args
;
6832 struct nfs4_get_lease_time_res
*res
;
6833 struct nfs_client
*clp
;
6836 static void nfs4_get_lease_time_prepare(struct rpc_task
*task
,
6839 struct nfs4_get_lease_time_data
*data
=
6840 (struct nfs4_get_lease_time_data
*)calldata
;
6842 dprintk("--> %s\n", __func__
);
6843 /* just setup sequence, do not trigger session recovery
6844 since we're invoked within one */
6845 nfs41_setup_sequence(data
->clp
->cl_session
,
6846 &data
->args
->la_seq_args
,
6847 &data
->res
->lr_seq_res
,
6849 dprintk("<-- %s\n", __func__
);
6853 * Called from nfs4_state_manager thread for session setup, so don't recover
6854 * from sequence operation or clientid errors.
6856 static void nfs4_get_lease_time_done(struct rpc_task
*task
, void *calldata
)
6858 struct nfs4_get_lease_time_data
*data
=
6859 (struct nfs4_get_lease_time_data
*)calldata
;
6861 dprintk("--> %s\n", __func__
);
6862 if (!nfs41_sequence_done(task
, &data
->res
->lr_seq_res
))
6864 switch (task
->tk_status
) {
6865 case -NFS4ERR_DELAY
:
6866 case -NFS4ERR_GRACE
:
6867 dprintk("%s Retry: tk_status %d\n", __func__
, task
->tk_status
);
6868 rpc_delay(task
, NFS4_POLL_RETRY_MIN
);
6869 task
->tk_status
= 0;
6871 case -NFS4ERR_RETRY_UNCACHED_REP
:
6872 rpc_restart_call_prepare(task
);
6875 dprintk("<-- %s\n", __func__
);
6878 static const struct rpc_call_ops nfs4_get_lease_time_ops
= {
6879 .rpc_call_prepare
= nfs4_get_lease_time_prepare
,
6880 .rpc_call_done
= nfs4_get_lease_time_done
,
6883 int nfs4_proc_get_lease_time(struct nfs_client
*clp
, struct nfs_fsinfo
*fsinfo
)
6885 struct rpc_task
*task
;
6886 struct nfs4_get_lease_time_args args
;
6887 struct nfs4_get_lease_time_res res
= {
6888 .lr_fsinfo
= fsinfo
,
6890 struct nfs4_get_lease_time_data data
= {
6895 struct rpc_message msg
= {
6896 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GET_LEASE_TIME
],
6900 struct rpc_task_setup task_setup
= {
6901 .rpc_client
= clp
->cl_rpcclient
,
6902 .rpc_message
= &msg
,
6903 .callback_ops
= &nfs4_get_lease_time_ops
,
6904 .callback_data
= &data
,
6905 .flags
= RPC_TASK_TIMEOUT
,
6909 nfs4_init_sequence(&args
.la_seq_args
, &res
.lr_seq_res
, 0);
6910 nfs4_set_sequence_privileged(&args
.la_seq_args
);
6911 dprintk("--> %s\n", __func__
);
6912 task
= rpc_run_task(&task_setup
);
6915 status
= PTR_ERR(task
);
6917 status
= task
->tk_status
;
6920 dprintk("<-- %s return %d\n", __func__
, status
);
6926 * Initialize the values to be used by the client in CREATE_SESSION
6927 * If nfs4_init_session set the fore channel request and response sizes,
6930 * Set the back channel max_resp_sz_cached to zero to force the client to
6931 * always set csa_cachethis to FALSE because the current implementation
6932 * of the back channel DRC only supports caching the CB_SEQUENCE operation.
6934 static void nfs4_init_channel_attrs(struct nfs41_create_session_args
*args
)
6936 unsigned int max_rqst_sz
, max_resp_sz
;
6938 max_rqst_sz
= NFS_MAX_FILE_IO_SIZE
+ nfs41_maxwrite_overhead
;
6939 max_resp_sz
= NFS_MAX_FILE_IO_SIZE
+ nfs41_maxread_overhead
;
6941 /* Fore channel attributes */
6942 args
->fc_attrs
.max_rqst_sz
= max_rqst_sz
;
6943 args
->fc_attrs
.max_resp_sz
= max_resp_sz
;
6944 args
->fc_attrs
.max_ops
= NFS4_MAX_OPS
;
6945 args
->fc_attrs
.max_reqs
= max_session_slots
;
6947 dprintk("%s: Fore Channel : max_rqst_sz=%u max_resp_sz=%u "
6948 "max_ops=%u max_reqs=%u\n",
6950 args
->fc_attrs
.max_rqst_sz
, args
->fc_attrs
.max_resp_sz
,
6951 args
->fc_attrs
.max_ops
, args
->fc_attrs
.max_reqs
);
6953 /* Back channel attributes */
6954 args
->bc_attrs
.max_rqst_sz
= PAGE_SIZE
;
6955 args
->bc_attrs
.max_resp_sz
= PAGE_SIZE
;
6956 args
->bc_attrs
.max_resp_sz_cached
= 0;
6957 args
->bc_attrs
.max_ops
= NFS4_MAX_BACK_CHANNEL_OPS
;
6958 args
->bc_attrs
.max_reqs
= 1;
6960 dprintk("%s: Back Channel : max_rqst_sz=%u max_resp_sz=%u "
6961 "max_resp_sz_cached=%u max_ops=%u max_reqs=%u\n",
6963 args
->bc_attrs
.max_rqst_sz
, args
->bc_attrs
.max_resp_sz
,
6964 args
->bc_attrs
.max_resp_sz_cached
, args
->bc_attrs
.max_ops
,
6965 args
->bc_attrs
.max_reqs
);
6968 static int nfs4_verify_fore_channel_attrs(struct nfs41_create_session_args
*args
, struct nfs4_session
*session
)
6970 struct nfs4_channel_attrs
*sent
= &args
->fc_attrs
;
6971 struct nfs4_channel_attrs
*rcvd
= &session
->fc_attrs
;
6973 if (rcvd
->max_resp_sz
> sent
->max_resp_sz
)
6976 * Our requested max_ops is the minimum we need; we're not
6977 * prepared to break up compounds into smaller pieces than that.
6978 * So, no point even trying to continue if the server won't
6981 if (rcvd
->max_ops
< sent
->max_ops
)
6983 if (rcvd
->max_reqs
== 0)
6985 if (rcvd
->max_reqs
> NFS4_MAX_SLOT_TABLE
)
6986 rcvd
->max_reqs
= NFS4_MAX_SLOT_TABLE
;
6990 static int nfs4_verify_back_channel_attrs(struct nfs41_create_session_args
*args
, struct nfs4_session
*session
)
6992 struct nfs4_channel_attrs
*sent
= &args
->bc_attrs
;
6993 struct nfs4_channel_attrs
*rcvd
= &session
->bc_attrs
;
6995 if (rcvd
->max_rqst_sz
> sent
->max_rqst_sz
)
6997 if (rcvd
->max_resp_sz
< sent
->max_resp_sz
)
6999 if (rcvd
->max_resp_sz_cached
> sent
->max_resp_sz_cached
)
7001 /* These would render the backchannel useless: */
7002 if (rcvd
->max_ops
!= sent
->max_ops
)
7004 if (rcvd
->max_reqs
!= sent
->max_reqs
)
7009 static int nfs4_verify_channel_attrs(struct nfs41_create_session_args
*args
,
7010 struct nfs4_session
*session
)
7014 ret
= nfs4_verify_fore_channel_attrs(args
, session
);
7017 return nfs4_verify_back_channel_attrs(args
, session
);
7020 static int _nfs4_proc_create_session(struct nfs_client
*clp
,
7021 struct rpc_cred
*cred
)
7023 struct nfs4_session
*session
= clp
->cl_session
;
7024 struct nfs41_create_session_args args
= {
7026 .cb_program
= NFS4_CALLBACK
,
7028 struct nfs41_create_session_res res
= {
7031 struct rpc_message msg
= {
7032 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CREATE_SESSION
],
7039 nfs4_init_channel_attrs(&args
);
7040 args
.flags
= (SESSION4_PERSIST
| SESSION4_BACK_CHAN
);
7042 status
= rpc_call_sync(session
->clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
7043 trace_nfs4_create_session(clp
, status
);
7046 /* Verify the session's negotiated channel_attrs values */
7047 status
= nfs4_verify_channel_attrs(&args
, session
);
7048 /* Increment the clientid slot sequence id */
7056 * Issues a CREATE_SESSION operation to the server.
7057 * It is the responsibility of the caller to verify the session is
7058 * expired before calling this routine.
7060 int nfs4_proc_create_session(struct nfs_client
*clp
, struct rpc_cred
*cred
)
7064 struct nfs4_session
*session
= clp
->cl_session
;
7066 dprintk("--> %s clp=%p session=%p\n", __func__
, clp
, session
);
7068 status
= _nfs4_proc_create_session(clp
, cred
);
7072 /* Init or reset the session slot tables */
7073 status
= nfs4_setup_session_slot_tables(session
);
7074 dprintk("slot table setup returned %d\n", status
);
7078 ptr
= (unsigned *)&session
->sess_id
.data
[0];
7079 dprintk("%s client>seqid %d sessionid %u:%u:%u:%u\n", __func__
,
7080 clp
->cl_seqid
, ptr
[0], ptr
[1], ptr
[2], ptr
[3]);
7082 dprintk("<-- %s\n", __func__
);
7087 * Issue the over-the-wire RPC DESTROY_SESSION.
7088 * The caller must serialize access to this routine.
7090 int nfs4_proc_destroy_session(struct nfs4_session
*session
,
7091 struct rpc_cred
*cred
)
7093 struct rpc_message msg
= {
7094 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DESTROY_SESSION
],
7095 .rpc_argp
= session
,
7100 dprintk("--> nfs4_proc_destroy_session\n");
7102 /* session is still being setup */
7103 if (session
->clp
->cl_cons_state
!= NFS_CS_READY
)
7106 status
= rpc_call_sync(session
->clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
7107 trace_nfs4_destroy_session(session
->clp
, status
);
7110 dprintk("NFS: Got error %d from the server on DESTROY_SESSION. "
7111 "Session has been destroyed regardless...\n", status
);
7113 dprintk("<-- nfs4_proc_destroy_session\n");
7118 * Renew the cl_session lease.
7120 struct nfs4_sequence_data
{
7121 struct nfs_client
*clp
;
7122 struct nfs4_sequence_args args
;
7123 struct nfs4_sequence_res res
;
7126 static void nfs41_sequence_release(void *data
)
7128 struct nfs4_sequence_data
*calldata
= data
;
7129 struct nfs_client
*clp
= calldata
->clp
;
7131 if (atomic_read(&clp
->cl_count
) > 1)
7132 nfs4_schedule_state_renewal(clp
);
7133 nfs_put_client(clp
);
7137 static int nfs41_sequence_handle_errors(struct rpc_task
*task
, struct nfs_client
*clp
)
7139 switch(task
->tk_status
) {
7140 case -NFS4ERR_DELAY
:
7141 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
7144 nfs4_schedule_lease_recovery(clp
);
7149 static void nfs41_sequence_call_done(struct rpc_task
*task
, void *data
)
7151 struct nfs4_sequence_data
*calldata
= data
;
7152 struct nfs_client
*clp
= calldata
->clp
;
7154 if (!nfs41_sequence_done(task
, task
->tk_msg
.rpc_resp
))
7157 trace_nfs4_sequence(clp
, task
->tk_status
);
7158 if (task
->tk_status
< 0) {
7159 dprintk("%s ERROR %d\n", __func__
, task
->tk_status
);
7160 if (atomic_read(&clp
->cl_count
) == 1)
7163 if (nfs41_sequence_handle_errors(task
, clp
) == -EAGAIN
) {
7164 rpc_restart_call_prepare(task
);
7168 dprintk("%s rpc_cred %p\n", __func__
, task
->tk_msg
.rpc_cred
);
7170 dprintk("<-- %s\n", __func__
);
7173 static void nfs41_sequence_prepare(struct rpc_task
*task
, void *data
)
7175 struct nfs4_sequence_data
*calldata
= data
;
7176 struct nfs_client
*clp
= calldata
->clp
;
7177 struct nfs4_sequence_args
*args
;
7178 struct nfs4_sequence_res
*res
;
7180 args
= task
->tk_msg
.rpc_argp
;
7181 res
= task
->tk_msg
.rpc_resp
;
7183 nfs41_setup_sequence(clp
->cl_session
, args
, res
, task
);
7186 static const struct rpc_call_ops nfs41_sequence_ops
= {
7187 .rpc_call_done
= nfs41_sequence_call_done
,
7188 .rpc_call_prepare
= nfs41_sequence_prepare
,
7189 .rpc_release
= nfs41_sequence_release
,
7192 static struct rpc_task
*_nfs41_proc_sequence(struct nfs_client
*clp
,
7193 struct rpc_cred
*cred
,
7196 struct nfs4_sequence_data
*calldata
;
7197 struct rpc_message msg
= {
7198 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SEQUENCE
],
7201 struct rpc_task_setup task_setup_data
= {
7202 .rpc_client
= clp
->cl_rpcclient
,
7203 .rpc_message
= &msg
,
7204 .callback_ops
= &nfs41_sequence_ops
,
7205 .flags
= RPC_TASK_ASYNC
| RPC_TASK_TIMEOUT
,
7208 if (!atomic_inc_not_zero(&clp
->cl_count
))
7209 return ERR_PTR(-EIO
);
7210 calldata
= kzalloc(sizeof(*calldata
), GFP_NOFS
);
7211 if (calldata
== NULL
) {
7212 nfs_put_client(clp
);
7213 return ERR_PTR(-ENOMEM
);
7215 nfs4_init_sequence(&calldata
->args
, &calldata
->res
, 0);
7217 nfs4_set_sequence_privileged(&calldata
->args
);
7218 msg
.rpc_argp
= &calldata
->args
;
7219 msg
.rpc_resp
= &calldata
->res
;
7220 calldata
->clp
= clp
;
7221 task_setup_data
.callback_data
= calldata
;
7223 return rpc_run_task(&task_setup_data
);
7226 static int nfs41_proc_async_sequence(struct nfs_client
*clp
, struct rpc_cred
*cred
, unsigned renew_flags
)
7228 struct rpc_task
*task
;
7231 if ((renew_flags
& NFS4_RENEW_TIMEOUT
) == 0)
7233 task
= _nfs41_proc_sequence(clp
, cred
, false);
7235 ret
= PTR_ERR(task
);
7237 rpc_put_task_async(task
);
7238 dprintk("<-- %s status=%d\n", __func__
, ret
);
7242 static int nfs4_proc_sequence(struct nfs_client
*clp
, struct rpc_cred
*cred
)
7244 struct rpc_task
*task
;
7247 task
= _nfs41_proc_sequence(clp
, cred
, true);
7249 ret
= PTR_ERR(task
);
7252 ret
= rpc_wait_for_completion_task(task
);
7254 struct nfs4_sequence_res
*res
= task
->tk_msg
.rpc_resp
;
7256 if (task
->tk_status
== 0)
7257 nfs41_handle_sequence_flag_errors(clp
, res
->sr_status_flags
);
7258 ret
= task
->tk_status
;
7262 dprintk("<-- %s status=%d\n", __func__
, ret
);
7266 struct nfs4_reclaim_complete_data
{
7267 struct nfs_client
*clp
;
7268 struct nfs41_reclaim_complete_args arg
;
7269 struct nfs41_reclaim_complete_res res
;
7272 static void nfs4_reclaim_complete_prepare(struct rpc_task
*task
, void *data
)
7274 struct nfs4_reclaim_complete_data
*calldata
= data
;
7276 nfs41_setup_sequence(calldata
->clp
->cl_session
,
7277 &calldata
->arg
.seq_args
,
7278 &calldata
->res
.seq_res
,
7282 static int nfs41_reclaim_complete_handle_errors(struct rpc_task
*task
, struct nfs_client
*clp
)
7284 switch(task
->tk_status
) {
7286 case -NFS4ERR_COMPLETE_ALREADY
:
7287 case -NFS4ERR_WRONG_CRED
: /* What to do here? */
7289 case -NFS4ERR_DELAY
:
7290 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
7292 case -NFS4ERR_RETRY_UNCACHED_REP
:
7295 nfs4_schedule_lease_recovery(clp
);
7300 static void nfs4_reclaim_complete_done(struct rpc_task
*task
, void *data
)
7302 struct nfs4_reclaim_complete_data
*calldata
= data
;
7303 struct nfs_client
*clp
= calldata
->clp
;
7304 struct nfs4_sequence_res
*res
= &calldata
->res
.seq_res
;
7306 dprintk("--> %s\n", __func__
);
7307 if (!nfs41_sequence_done(task
, res
))
7310 trace_nfs4_reclaim_complete(clp
, task
->tk_status
);
7311 if (nfs41_reclaim_complete_handle_errors(task
, clp
) == -EAGAIN
) {
7312 rpc_restart_call_prepare(task
);
7315 dprintk("<-- %s\n", __func__
);
7318 static void nfs4_free_reclaim_complete_data(void *data
)
7320 struct nfs4_reclaim_complete_data
*calldata
= data
;
7325 static const struct rpc_call_ops nfs4_reclaim_complete_call_ops
= {
7326 .rpc_call_prepare
= nfs4_reclaim_complete_prepare
,
7327 .rpc_call_done
= nfs4_reclaim_complete_done
,
7328 .rpc_release
= nfs4_free_reclaim_complete_data
,
7332 * Issue a global reclaim complete.
7334 static int nfs41_proc_reclaim_complete(struct nfs_client
*clp
,
7335 struct rpc_cred
*cred
)
7337 struct nfs4_reclaim_complete_data
*calldata
;
7338 struct rpc_task
*task
;
7339 struct rpc_message msg
= {
7340 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RECLAIM_COMPLETE
],
7343 struct rpc_task_setup task_setup_data
= {
7344 .rpc_client
= clp
->cl_rpcclient
,
7345 .rpc_message
= &msg
,
7346 .callback_ops
= &nfs4_reclaim_complete_call_ops
,
7347 .flags
= RPC_TASK_ASYNC
,
7349 int status
= -ENOMEM
;
7351 dprintk("--> %s\n", __func__
);
7352 calldata
= kzalloc(sizeof(*calldata
), GFP_NOFS
);
7353 if (calldata
== NULL
)
7355 calldata
->clp
= clp
;
7356 calldata
->arg
.one_fs
= 0;
7358 nfs4_init_sequence(&calldata
->arg
.seq_args
, &calldata
->res
.seq_res
, 0);
7359 nfs4_set_sequence_privileged(&calldata
->arg
.seq_args
);
7360 msg
.rpc_argp
= &calldata
->arg
;
7361 msg
.rpc_resp
= &calldata
->res
;
7362 task_setup_data
.callback_data
= calldata
;
7363 task
= rpc_run_task(&task_setup_data
);
7365 status
= PTR_ERR(task
);
7368 status
= nfs4_wait_for_completion_rpc_task(task
);
7370 status
= task
->tk_status
;
7374 dprintk("<-- %s status=%d\n", __func__
, status
);
7379 nfs4_layoutget_prepare(struct rpc_task
*task
, void *calldata
)
7381 struct nfs4_layoutget
*lgp
= calldata
;
7382 struct nfs_server
*server
= NFS_SERVER(lgp
->args
.inode
);
7383 struct nfs4_session
*session
= nfs4_get_session(server
);
7385 dprintk("--> %s\n", __func__
);
7386 /* Note the is a race here, where a CB_LAYOUTRECALL can come in
7387 * right now covering the LAYOUTGET we are about to send.
7388 * However, that is not so catastrophic, and there seems
7389 * to be no way to prevent it completely.
7391 if (nfs41_setup_sequence(session
, &lgp
->args
.seq_args
,
7392 &lgp
->res
.seq_res
, task
))
7394 if (pnfs_choose_layoutget_stateid(&lgp
->args
.stateid
,
7395 NFS_I(lgp
->args
.inode
)->layout
,
7396 lgp
->args
.ctx
->state
)) {
7397 rpc_exit(task
, NFS4_OK
);
7401 static void nfs4_layoutget_done(struct rpc_task
*task
, void *calldata
)
7403 struct nfs4_layoutget
*lgp
= calldata
;
7404 struct inode
*inode
= lgp
->args
.inode
;
7405 struct nfs_server
*server
= NFS_SERVER(inode
);
7406 struct pnfs_layout_hdr
*lo
;
7407 struct nfs4_state
*state
= NULL
;
7408 unsigned long timeo
, now
, giveup
;
7410 dprintk("--> %s tk_status => %d\n", __func__
, -task
->tk_status
);
7412 if (!nfs41_sequence_done(task
, &lgp
->res
.seq_res
))
7415 switch (task
->tk_status
) {
7419 * NFS4ERR_LAYOUTTRYLATER is a conflict with another client
7420 * (or clients) writing to the same RAID stripe
7422 case -NFS4ERR_LAYOUTTRYLATER
:
7424 * NFS4ERR_RECALLCONFLICT is when conflict with self (must recall
7425 * existing layout before getting a new one).
7427 case -NFS4ERR_RECALLCONFLICT
:
7428 timeo
= rpc_get_timeout(task
->tk_client
);
7429 giveup
= lgp
->args
.timestamp
+ timeo
;
7431 if (time_after(giveup
, now
)) {
7432 unsigned long delay
;
7435 * - Not less then NFS4_POLL_RETRY_MIN.
7436 * - One last time a jiffie before we give up
7437 * - exponential backoff (time_now minus start_attempt)
7439 delay
= max_t(unsigned long, NFS4_POLL_RETRY_MIN
,
7440 min((giveup
- now
- 1),
7441 now
- lgp
->args
.timestamp
));
7443 dprintk("%s: NFS4ERR_RECALLCONFLICT waiting %lu\n",
7445 rpc_delay(task
, delay
);
7446 task
->tk_status
= 0;
7447 rpc_restart_call_prepare(task
);
7448 goto out
; /* Do not call nfs4_async_handle_error() */
7451 case -NFS4ERR_EXPIRED
:
7452 case -NFS4ERR_BAD_STATEID
:
7453 spin_lock(&inode
->i_lock
);
7454 lo
= NFS_I(inode
)->layout
;
7455 if (!lo
|| list_empty(&lo
->plh_segs
)) {
7456 spin_unlock(&inode
->i_lock
);
7457 /* If the open stateid was bad, then recover it. */
7458 state
= lgp
->args
.ctx
->state
;
7462 pnfs_mark_matching_lsegs_invalid(lo
, &head
, NULL
);
7463 spin_unlock(&inode
->i_lock
);
7464 /* Mark the bad layout state as invalid, then
7465 * retry using the open stateid. */
7466 pnfs_free_lseg_list(&head
);
7469 if (nfs4_async_handle_error(task
, server
, state
) == -EAGAIN
)
7470 rpc_restart_call_prepare(task
);
7472 dprintk("<-- %s\n", __func__
);
7475 static size_t max_response_pages(struct nfs_server
*server
)
7477 u32 max_resp_sz
= server
->nfs_client
->cl_session
->fc_attrs
.max_resp_sz
;
7478 return nfs_page_array_len(0, max_resp_sz
);
7481 static void nfs4_free_pages(struct page
**pages
, size_t size
)
7488 for (i
= 0; i
< size
; i
++) {
7491 __free_page(pages
[i
]);
7496 static struct page
**nfs4_alloc_pages(size_t size
, gfp_t gfp_flags
)
7498 struct page
**pages
;
7501 pages
= kcalloc(size
, sizeof(struct page
*), gfp_flags
);
7503 dprintk("%s: can't alloc array of %zu pages\n", __func__
, size
);
7507 for (i
= 0; i
< size
; i
++) {
7508 pages
[i
] = alloc_page(gfp_flags
);
7510 dprintk("%s: failed to allocate page\n", __func__
);
7511 nfs4_free_pages(pages
, size
);
7519 static void nfs4_layoutget_release(void *calldata
)
7521 struct nfs4_layoutget
*lgp
= calldata
;
7522 struct inode
*inode
= lgp
->args
.inode
;
7523 struct nfs_server
*server
= NFS_SERVER(inode
);
7524 size_t max_pages
= max_response_pages(server
);
7526 dprintk("--> %s\n", __func__
);
7527 nfs4_free_pages(lgp
->args
.layout
.pages
, max_pages
);
7528 pnfs_put_layout_hdr(NFS_I(inode
)->layout
);
7529 put_nfs_open_context(lgp
->args
.ctx
);
7531 dprintk("<-- %s\n", __func__
);
7534 static const struct rpc_call_ops nfs4_layoutget_call_ops
= {
7535 .rpc_call_prepare
= nfs4_layoutget_prepare
,
7536 .rpc_call_done
= nfs4_layoutget_done
,
7537 .rpc_release
= nfs4_layoutget_release
,
7540 struct pnfs_layout_segment
*
7541 nfs4_proc_layoutget(struct nfs4_layoutget
*lgp
, gfp_t gfp_flags
)
7543 struct inode
*inode
= lgp
->args
.inode
;
7544 struct nfs_server
*server
= NFS_SERVER(inode
);
7545 size_t max_pages
= max_response_pages(server
);
7546 struct rpc_task
*task
;
7547 struct rpc_message msg
= {
7548 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LAYOUTGET
],
7549 .rpc_argp
= &lgp
->args
,
7550 .rpc_resp
= &lgp
->res
,
7551 .rpc_cred
= lgp
->cred
,
7553 struct rpc_task_setup task_setup_data
= {
7554 .rpc_client
= server
->client
,
7555 .rpc_message
= &msg
,
7556 .callback_ops
= &nfs4_layoutget_call_ops
,
7557 .callback_data
= lgp
,
7558 .flags
= RPC_TASK_ASYNC
,
7560 struct pnfs_layout_segment
*lseg
= NULL
;
7563 dprintk("--> %s\n", __func__
);
7565 lgp
->args
.layout
.pages
= nfs4_alloc_pages(max_pages
, gfp_flags
);
7566 if (!lgp
->args
.layout
.pages
) {
7567 nfs4_layoutget_release(lgp
);
7568 return ERR_PTR(-ENOMEM
);
7570 lgp
->args
.layout
.pglen
= max_pages
* PAGE_SIZE
;
7571 lgp
->args
.timestamp
= jiffies
;
7573 lgp
->res
.layoutp
= &lgp
->args
.layout
;
7574 lgp
->res
.seq_res
.sr_slot
= NULL
;
7575 nfs4_init_sequence(&lgp
->args
.seq_args
, &lgp
->res
.seq_res
, 0);
7577 /* nfs4_layoutget_release calls pnfs_put_layout_hdr */
7578 pnfs_get_layout_hdr(NFS_I(inode
)->layout
);
7580 task
= rpc_run_task(&task_setup_data
);
7582 return ERR_CAST(task
);
7583 status
= nfs4_wait_for_completion_rpc_task(task
);
7585 status
= task
->tk_status
;
7586 trace_nfs4_layoutget(lgp
->args
.ctx
,
7590 /* if layoutp->len is 0, nfs4_layoutget_prepare called rpc_exit */
7591 if (status
== 0 && lgp
->res
.layoutp
->len
)
7592 lseg
= pnfs_layout_process(lgp
);
7594 dprintk("<-- %s status=%d\n", __func__
, status
);
7596 return ERR_PTR(status
);
7601 nfs4_layoutreturn_prepare(struct rpc_task
*task
, void *calldata
)
7603 struct nfs4_layoutreturn
*lrp
= calldata
;
7605 dprintk("--> %s\n", __func__
);
7606 nfs41_setup_sequence(lrp
->clp
->cl_session
,
7607 &lrp
->args
.seq_args
,
7612 static void nfs4_layoutreturn_done(struct rpc_task
*task
, void *calldata
)
7614 struct nfs4_layoutreturn
*lrp
= calldata
;
7615 struct nfs_server
*server
;
7617 dprintk("--> %s\n", __func__
);
7619 if (!nfs41_sequence_done(task
, &lrp
->res
.seq_res
))
7622 server
= NFS_SERVER(lrp
->args
.inode
);
7623 switch (task
->tk_status
) {
7625 task
->tk_status
= 0;
7628 case -NFS4ERR_DELAY
:
7629 if (nfs4_async_handle_error(task
, server
, NULL
) != -EAGAIN
)
7631 rpc_restart_call_prepare(task
);
7634 dprintk("<-- %s\n", __func__
);
7637 static void nfs4_layoutreturn_release(void *calldata
)
7639 struct nfs4_layoutreturn
*lrp
= calldata
;
7640 struct pnfs_layout_hdr
*lo
= lrp
->args
.layout
;
7642 dprintk("--> %s\n", __func__
);
7643 spin_lock(&lo
->plh_inode
->i_lock
);
7644 if (lrp
->res
.lrs_present
)
7645 pnfs_set_layout_stateid(lo
, &lrp
->res
.stateid
, true);
7646 lo
->plh_block_lgets
--;
7647 spin_unlock(&lo
->plh_inode
->i_lock
);
7648 pnfs_put_layout_hdr(lrp
->args
.layout
);
7650 dprintk("<-- %s\n", __func__
);
7653 static const struct rpc_call_ops nfs4_layoutreturn_call_ops
= {
7654 .rpc_call_prepare
= nfs4_layoutreturn_prepare
,
7655 .rpc_call_done
= nfs4_layoutreturn_done
,
7656 .rpc_release
= nfs4_layoutreturn_release
,
7659 int nfs4_proc_layoutreturn(struct nfs4_layoutreturn
*lrp
)
7661 struct rpc_task
*task
;
7662 struct rpc_message msg
= {
7663 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LAYOUTRETURN
],
7664 .rpc_argp
= &lrp
->args
,
7665 .rpc_resp
= &lrp
->res
,
7666 .rpc_cred
= lrp
->cred
,
7668 struct rpc_task_setup task_setup_data
= {
7669 .rpc_client
= NFS_SERVER(lrp
->args
.inode
)->client
,
7670 .rpc_message
= &msg
,
7671 .callback_ops
= &nfs4_layoutreturn_call_ops
,
7672 .callback_data
= lrp
,
7676 dprintk("--> %s\n", __func__
);
7677 nfs4_init_sequence(&lrp
->args
.seq_args
, &lrp
->res
.seq_res
, 1);
7678 task
= rpc_run_task(&task_setup_data
);
7680 return PTR_ERR(task
);
7681 status
= task
->tk_status
;
7682 trace_nfs4_layoutreturn(lrp
->args
.inode
, status
);
7683 dprintk("<-- %s status=%d\n", __func__
, status
);
7689 * Retrieve the list of Data Server devices from the MDS.
7691 static int _nfs4_getdevicelist(struct nfs_server
*server
,
7692 const struct nfs_fh
*fh
,
7693 struct pnfs_devicelist
*devlist
)
7695 struct nfs4_getdevicelist_args args
= {
7697 .layoutclass
= server
->pnfs_curr_ld
->id
,
7699 struct nfs4_getdevicelist_res res
= {
7702 struct rpc_message msg
= {
7703 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETDEVICELIST
],
7709 dprintk("--> %s\n", __func__
);
7710 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
,
7712 dprintk("<-- %s status=%d\n", __func__
, status
);
7716 int nfs4_proc_getdevicelist(struct nfs_server
*server
,
7717 const struct nfs_fh
*fh
,
7718 struct pnfs_devicelist
*devlist
)
7720 struct nfs4_exception exception
= { };
7724 err
= nfs4_handle_exception(server
,
7725 _nfs4_getdevicelist(server
, fh
, devlist
),
7727 } while (exception
.retry
);
7729 dprintk("%s: err=%d, num_devs=%u\n", __func__
,
7730 err
, devlist
->num_devs
);
7734 EXPORT_SYMBOL_GPL(nfs4_proc_getdevicelist
);
7737 _nfs4_proc_getdeviceinfo(struct nfs_server
*server
,
7738 struct pnfs_device
*pdev
,
7739 struct rpc_cred
*cred
)
7741 struct nfs4_getdeviceinfo_args args
= {
7744 struct nfs4_getdeviceinfo_res res
= {
7747 struct rpc_message msg
= {
7748 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETDEVICEINFO
],
7755 dprintk("--> %s\n", __func__
);
7756 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
7757 dprintk("<-- %s status=%d\n", __func__
, status
);
7762 int nfs4_proc_getdeviceinfo(struct nfs_server
*server
,
7763 struct pnfs_device
*pdev
,
7764 struct rpc_cred
*cred
)
7766 struct nfs4_exception exception
= { };
7770 err
= nfs4_handle_exception(server
,
7771 _nfs4_proc_getdeviceinfo(server
, pdev
, cred
),
7773 } while (exception
.retry
);
7776 EXPORT_SYMBOL_GPL(nfs4_proc_getdeviceinfo
);
7778 static void nfs4_layoutcommit_prepare(struct rpc_task
*task
, void *calldata
)
7780 struct nfs4_layoutcommit_data
*data
= calldata
;
7781 struct nfs_server
*server
= NFS_SERVER(data
->args
.inode
);
7782 struct nfs4_session
*session
= nfs4_get_session(server
);
7784 nfs41_setup_sequence(session
,
7785 &data
->args
.seq_args
,
7791 nfs4_layoutcommit_done(struct rpc_task
*task
, void *calldata
)
7793 struct nfs4_layoutcommit_data
*data
= calldata
;
7794 struct nfs_server
*server
= NFS_SERVER(data
->args
.inode
);
7796 if (!nfs41_sequence_done(task
, &data
->res
.seq_res
))
7799 switch (task
->tk_status
) { /* Just ignore these failures */
7800 case -NFS4ERR_DELEG_REVOKED
: /* layout was recalled */
7801 case -NFS4ERR_BADIOMODE
: /* no IOMODE_RW layout for range */
7802 case -NFS4ERR_BADLAYOUT
: /* no layout */
7803 case -NFS4ERR_GRACE
: /* loca_recalim always false */
7804 task
->tk_status
= 0;
7808 if (nfs4_async_handle_error(task
, server
, NULL
) == -EAGAIN
) {
7809 rpc_restart_call_prepare(task
);
7815 static void nfs4_layoutcommit_release(void *calldata
)
7817 struct nfs4_layoutcommit_data
*data
= calldata
;
7819 pnfs_cleanup_layoutcommit(data
);
7820 nfs_post_op_update_inode_force_wcc(data
->args
.inode
,
7822 put_rpccred(data
->cred
);
7826 static const struct rpc_call_ops nfs4_layoutcommit_ops
= {
7827 .rpc_call_prepare
= nfs4_layoutcommit_prepare
,
7828 .rpc_call_done
= nfs4_layoutcommit_done
,
7829 .rpc_release
= nfs4_layoutcommit_release
,
7833 nfs4_proc_layoutcommit(struct nfs4_layoutcommit_data
*data
, bool sync
)
7835 struct rpc_message msg
= {
7836 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LAYOUTCOMMIT
],
7837 .rpc_argp
= &data
->args
,
7838 .rpc_resp
= &data
->res
,
7839 .rpc_cred
= data
->cred
,
7841 struct rpc_task_setup task_setup_data
= {
7842 .task
= &data
->task
,
7843 .rpc_client
= NFS_CLIENT(data
->args
.inode
),
7844 .rpc_message
= &msg
,
7845 .callback_ops
= &nfs4_layoutcommit_ops
,
7846 .callback_data
= data
,
7847 .flags
= RPC_TASK_ASYNC
,
7849 struct rpc_task
*task
;
7852 dprintk("NFS: %4d initiating layoutcommit call. sync %d "
7853 "lbw: %llu inode %lu\n",
7854 data
->task
.tk_pid
, sync
,
7855 data
->args
.lastbytewritten
,
7856 data
->args
.inode
->i_ino
);
7858 nfs4_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
7859 task
= rpc_run_task(&task_setup_data
);
7861 return PTR_ERR(task
);
7864 status
= nfs4_wait_for_completion_rpc_task(task
);
7867 status
= task
->tk_status
;
7868 trace_nfs4_layoutcommit(data
->args
.inode
, status
);
7870 dprintk("%s: status %d\n", __func__
, status
);
7876 * Use the state managment nfs_client cl_rpcclient, which uses krb5i (if
7877 * possible) as per RFC3530bis and RFC5661 Security Considerations sections
7880 _nfs41_proc_secinfo_no_name(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
7881 struct nfs_fsinfo
*info
,
7882 struct nfs4_secinfo_flavors
*flavors
, bool use_integrity
)
7884 struct nfs41_secinfo_no_name_args args
= {
7885 .style
= SECINFO_STYLE_CURRENT_FH
,
7887 struct nfs4_secinfo_res res
= {
7890 struct rpc_message msg
= {
7891 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SECINFO_NO_NAME
],
7895 struct rpc_clnt
*clnt
= server
->client
;
7896 struct rpc_cred
*cred
= NULL
;
7899 if (use_integrity
) {
7900 clnt
= server
->nfs_client
->cl_rpcclient
;
7901 cred
= nfs4_get_clid_cred(server
->nfs_client
);
7902 msg
.rpc_cred
= cred
;
7905 dprintk("--> %s\n", __func__
);
7906 status
= nfs4_call_sync(clnt
, server
, &msg
, &args
.seq_args
,
7908 dprintk("<-- %s status=%d\n", __func__
, status
);
7917 nfs41_proc_secinfo_no_name(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
7918 struct nfs_fsinfo
*info
, struct nfs4_secinfo_flavors
*flavors
)
7920 struct nfs4_exception exception
= { };
7923 /* first try using integrity protection */
7924 err
= -NFS4ERR_WRONGSEC
;
7926 /* try to use integrity protection with machine cred */
7927 if (_nfs4_is_integrity_protected(server
->nfs_client
))
7928 err
= _nfs41_proc_secinfo_no_name(server
, fhandle
, info
,
7932 * if unable to use integrity protection, or SECINFO with
7933 * integrity protection returns NFS4ERR_WRONGSEC (which is
7934 * disallowed by spec, but exists in deployed servers) use
7935 * the current filesystem's rpc_client and the user cred.
7937 if (err
== -NFS4ERR_WRONGSEC
)
7938 err
= _nfs41_proc_secinfo_no_name(server
, fhandle
, info
,
7943 case -NFS4ERR_WRONGSEC
:
7947 err
= nfs4_handle_exception(server
, err
, &exception
);
7949 } while (exception
.retry
);
7955 nfs41_find_root_sec(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
7956 struct nfs_fsinfo
*info
)
7960 rpc_authflavor_t flavor
= RPC_AUTH_MAXFLAVOR
;
7961 struct nfs4_secinfo_flavors
*flavors
;
7962 struct nfs4_secinfo4
*secinfo
;
7965 page
= alloc_page(GFP_KERNEL
);
7971 flavors
= page_address(page
);
7972 err
= nfs41_proc_secinfo_no_name(server
, fhandle
, info
, flavors
);
7975 * Fall back on "guess and check" method if
7976 * the server doesn't support SECINFO_NO_NAME
7978 if (err
== -NFS4ERR_WRONGSEC
|| err
== -ENOTSUPP
) {
7979 err
= nfs4_find_root_sec(server
, fhandle
, info
);
7985 for (i
= 0; i
< flavors
->num_flavors
; i
++) {
7986 secinfo
= &flavors
->flavors
[i
];
7988 switch (secinfo
->flavor
) {
7992 flavor
= rpcauth_get_pseudoflavor(secinfo
->flavor
,
7993 &secinfo
->flavor_info
);
7996 flavor
= RPC_AUTH_MAXFLAVOR
;
8000 if (!nfs_auth_info_match(&server
->auth_info
, flavor
))
8001 flavor
= RPC_AUTH_MAXFLAVOR
;
8003 if (flavor
!= RPC_AUTH_MAXFLAVOR
) {
8004 err
= nfs4_lookup_root_sec(server
, fhandle
,
8011 if (flavor
== RPC_AUTH_MAXFLAVOR
)
8022 static int _nfs41_test_stateid(struct nfs_server
*server
,
8023 nfs4_stateid
*stateid
,
8024 struct rpc_cred
*cred
)
8027 struct nfs41_test_stateid_args args
= {
8030 struct nfs41_test_stateid_res res
;
8031 struct rpc_message msg
= {
8032 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_TEST_STATEID
],
8037 struct rpc_clnt
*rpc_client
= server
->client
;
8039 nfs4_state_protect(server
->nfs_client
, NFS_SP4_MACH_CRED_STATEID
,
8042 dprintk("NFS call test_stateid %p\n", stateid
);
8043 nfs4_init_sequence(&args
.seq_args
, &res
.seq_res
, 0);
8044 nfs4_set_sequence_privileged(&args
.seq_args
);
8045 status
= nfs4_call_sync_sequence(rpc_client
, server
, &msg
,
8046 &args
.seq_args
, &res
.seq_res
);
8047 if (status
!= NFS_OK
) {
8048 dprintk("NFS reply test_stateid: failed, %d\n", status
);
8051 dprintk("NFS reply test_stateid: succeeded, %d\n", -res
.status
);
8056 * nfs41_test_stateid - perform a TEST_STATEID operation
8058 * @server: server / transport on which to perform the operation
8059 * @stateid: state ID to test
8062 * Returns NFS_OK if the server recognizes that "stateid" is valid.
8063 * Otherwise a negative NFS4ERR value is returned if the operation
8064 * failed or the state ID is not currently valid.
8066 static int nfs41_test_stateid(struct nfs_server
*server
,
8067 nfs4_stateid
*stateid
,
8068 struct rpc_cred
*cred
)
8070 struct nfs4_exception exception
= { };
8073 err
= _nfs41_test_stateid(server
, stateid
, cred
);
8074 if (err
!= -NFS4ERR_DELAY
)
8076 nfs4_handle_exception(server
, err
, &exception
);
8077 } while (exception
.retry
);
8081 struct nfs_free_stateid_data
{
8082 struct nfs_server
*server
;
8083 struct nfs41_free_stateid_args args
;
8084 struct nfs41_free_stateid_res res
;
8087 static void nfs41_free_stateid_prepare(struct rpc_task
*task
, void *calldata
)
8089 struct nfs_free_stateid_data
*data
= calldata
;
8090 nfs41_setup_sequence(nfs4_get_session(data
->server
),
8091 &data
->args
.seq_args
,
8096 static void nfs41_free_stateid_done(struct rpc_task
*task
, void *calldata
)
8098 struct nfs_free_stateid_data
*data
= calldata
;
8100 nfs41_sequence_done(task
, &data
->res
.seq_res
);
8102 switch (task
->tk_status
) {
8103 case -NFS4ERR_DELAY
:
8104 if (nfs4_async_handle_error(task
, data
->server
, NULL
) == -EAGAIN
)
8105 rpc_restart_call_prepare(task
);
8109 static void nfs41_free_stateid_release(void *calldata
)
8114 static const struct rpc_call_ops nfs41_free_stateid_ops
= {
8115 .rpc_call_prepare
= nfs41_free_stateid_prepare
,
8116 .rpc_call_done
= nfs41_free_stateid_done
,
8117 .rpc_release
= nfs41_free_stateid_release
,
8120 static struct rpc_task
*_nfs41_free_stateid(struct nfs_server
*server
,
8121 nfs4_stateid
*stateid
,
8122 struct rpc_cred
*cred
,
8125 struct rpc_message msg
= {
8126 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FREE_STATEID
],
8129 struct rpc_task_setup task_setup
= {
8130 .rpc_client
= server
->client
,
8131 .rpc_message
= &msg
,
8132 .callback_ops
= &nfs41_free_stateid_ops
,
8133 .flags
= RPC_TASK_ASYNC
,
8135 struct nfs_free_stateid_data
*data
;
8137 nfs4_state_protect(server
->nfs_client
, NFS_SP4_MACH_CRED_STATEID
,
8138 &task_setup
.rpc_client
, &msg
);
8140 dprintk("NFS call free_stateid %p\n", stateid
);
8141 data
= kmalloc(sizeof(*data
), GFP_NOFS
);
8143 return ERR_PTR(-ENOMEM
);
8144 data
->server
= server
;
8145 nfs4_stateid_copy(&data
->args
.stateid
, stateid
);
8147 task_setup
.callback_data
= data
;
8149 msg
.rpc_argp
= &data
->args
;
8150 msg
.rpc_resp
= &data
->res
;
8151 nfs4_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 0);
8153 nfs4_set_sequence_privileged(&data
->args
.seq_args
);
8155 return rpc_run_task(&task_setup
);
8159 * nfs41_free_stateid - perform a FREE_STATEID operation
8161 * @server: server / transport on which to perform the operation
8162 * @stateid: state ID to release
8165 * Returns NFS_OK if the server freed "stateid". Otherwise a
8166 * negative NFS4ERR value is returned.
8168 static int nfs41_free_stateid(struct nfs_server
*server
,
8169 nfs4_stateid
*stateid
,
8170 struct rpc_cred
*cred
)
8172 struct rpc_task
*task
;
8175 task
= _nfs41_free_stateid(server
, stateid
, cred
, true);
8177 return PTR_ERR(task
);
8178 ret
= rpc_wait_for_completion_task(task
);
8180 ret
= task
->tk_status
;
8185 static int nfs41_free_lock_state(struct nfs_server
*server
, struct nfs4_lock_state
*lsp
)
8187 struct rpc_task
*task
;
8188 struct rpc_cred
*cred
= lsp
->ls_state
->owner
->so_cred
;
8190 task
= _nfs41_free_stateid(server
, &lsp
->ls_stateid
, cred
, false);
8191 nfs4_free_lock_state(server
, lsp
);
8193 return PTR_ERR(task
);
8198 static bool nfs41_match_stateid(const nfs4_stateid
*s1
,
8199 const nfs4_stateid
*s2
)
8201 if (memcmp(s1
->other
, s2
->other
, sizeof(s1
->other
)) != 0)
8204 if (s1
->seqid
== s2
->seqid
)
8206 if (s1
->seqid
== 0 || s2
->seqid
== 0)
8212 #endif /* CONFIG_NFS_V4_1 */
8214 static bool nfs4_match_stateid(const nfs4_stateid
*s1
,
8215 const nfs4_stateid
*s2
)
8217 return nfs4_stateid_match(s1
, s2
);
8221 static const struct nfs4_state_recovery_ops nfs40_reboot_recovery_ops
= {
8222 .owner_flag_bit
= NFS_OWNER_RECLAIM_REBOOT
,
8223 .state_flag_bit
= NFS_STATE_RECLAIM_REBOOT
,
8224 .recover_open
= nfs4_open_reclaim
,
8225 .recover_lock
= nfs4_lock_reclaim
,
8226 .establish_clid
= nfs4_init_clientid
,
8227 .detect_trunking
= nfs40_discover_server_trunking
,
8230 #if defined(CONFIG_NFS_V4_1)
8231 static const struct nfs4_state_recovery_ops nfs41_reboot_recovery_ops
= {
8232 .owner_flag_bit
= NFS_OWNER_RECLAIM_REBOOT
,
8233 .state_flag_bit
= NFS_STATE_RECLAIM_REBOOT
,
8234 .recover_open
= nfs4_open_reclaim
,
8235 .recover_lock
= nfs4_lock_reclaim
,
8236 .establish_clid
= nfs41_init_clientid
,
8237 .reclaim_complete
= nfs41_proc_reclaim_complete
,
8238 .detect_trunking
= nfs41_discover_server_trunking
,
8240 #endif /* CONFIG_NFS_V4_1 */
8242 static const struct nfs4_state_recovery_ops nfs40_nograce_recovery_ops
= {
8243 .owner_flag_bit
= NFS_OWNER_RECLAIM_NOGRACE
,
8244 .state_flag_bit
= NFS_STATE_RECLAIM_NOGRACE
,
8245 .recover_open
= nfs4_open_expired
,
8246 .recover_lock
= nfs4_lock_expired
,
8247 .establish_clid
= nfs4_init_clientid
,
8250 #if defined(CONFIG_NFS_V4_1)
8251 static const struct nfs4_state_recovery_ops nfs41_nograce_recovery_ops
= {
8252 .owner_flag_bit
= NFS_OWNER_RECLAIM_NOGRACE
,
8253 .state_flag_bit
= NFS_STATE_RECLAIM_NOGRACE
,
8254 .recover_open
= nfs41_open_expired
,
8255 .recover_lock
= nfs41_lock_expired
,
8256 .establish_clid
= nfs41_init_clientid
,
8258 #endif /* CONFIG_NFS_V4_1 */
8260 static const struct nfs4_state_maintenance_ops nfs40_state_renewal_ops
= {
8261 .sched_state_renewal
= nfs4_proc_async_renew
,
8262 .get_state_renewal_cred_locked
= nfs4_get_renew_cred_locked
,
8263 .renew_lease
= nfs4_proc_renew
,
8266 #if defined(CONFIG_NFS_V4_1)
8267 static const struct nfs4_state_maintenance_ops nfs41_state_renewal_ops
= {
8268 .sched_state_renewal
= nfs41_proc_async_sequence
,
8269 .get_state_renewal_cred_locked
= nfs4_get_machine_cred_locked
,
8270 .renew_lease
= nfs4_proc_sequence
,
8274 static const struct nfs4_mig_recovery_ops nfs40_mig_recovery_ops
= {
8275 .get_locations
= _nfs40_proc_get_locations
,
8276 .fsid_present
= _nfs40_proc_fsid_present
,
8279 #if defined(CONFIG_NFS_V4_1)
8280 static const struct nfs4_mig_recovery_ops nfs41_mig_recovery_ops
= {
8281 .get_locations
= _nfs41_proc_get_locations
,
8282 .fsid_present
= _nfs41_proc_fsid_present
,
8284 #endif /* CONFIG_NFS_V4_1 */
8286 static const struct nfs4_minor_version_ops nfs_v4_0_minor_ops
= {
8288 .init_caps
= NFS_CAP_READDIRPLUS
8289 | NFS_CAP_ATOMIC_OPEN
8290 | NFS_CAP_CHANGE_ATTR
8291 | NFS_CAP_POSIX_LOCK
,
8292 .init_client
= nfs40_init_client
,
8293 .shutdown_client
= nfs40_shutdown_client
,
8294 .match_stateid
= nfs4_match_stateid
,
8295 .find_root_sec
= nfs4_find_root_sec
,
8296 .free_lock_state
= nfs4_release_lockowner
,
8297 .call_sync_ops
= &nfs40_call_sync_ops
,
8298 .reboot_recovery_ops
= &nfs40_reboot_recovery_ops
,
8299 .nograce_recovery_ops
= &nfs40_nograce_recovery_ops
,
8300 .state_renewal_ops
= &nfs40_state_renewal_ops
,
8301 .mig_recovery_ops
= &nfs40_mig_recovery_ops
,
8304 #if defined(CONFIG_NFS_V4_1)
8305 static const struct nfs4_minor_version_ops nfs_v4_1_minor_ops
= {
8307 .init_caps
= NFS_CAP_READDIRPLUS
8308 | NFS_CAP_ATOMIC_OPEN
8309 | NFS_CAP_CHANGE_ATTR
8310 | NFS_CAP_POSIX_LOCK
8311 | NFS_CAP_STATEID_NFSV41
8312 | NFS_CAP_ATOMIC_OPEN_V1
,
8313 .init_client
= nfs41_init_client
,
8314 .shutdown_client
= nfs41_shutdown_client
,
8315 .match_stateid
= nfs41_match_stateid
,
8316 .find_root_sec
= nfs41_find_root_sec
,
8317 .free_lock_state
= nfs41_free_lock_state
,
8318 .call_sync_ops
= &nfs41_call_sync_ops
,
8319 .reboot_recovery_ops
= &nfs41_reboot_recovery_ops
,
8320 .nograce_recovery_ops
= &nfs41_nograce_recovery_ops
,
8321 .state_renewal_ops
= &nfs41_state_renewal_ops
,
8322 .mig_recovery_ops
= &nfs41_mig_recovery_ops
,
8326 #if defined(CONFIG_NFS_V4_2)
8327 static const struct nfs4_minor_version_ops nfs_v4_2_minor_ops
= {
8329 .init_caps
= NFS_CAP_READDIRPLUS
8330 | NFS_CAP_ATOMIC_OPEN
8331 | NFS_CAP_CHANGE_ATTR
8332 | NFS_CAP_POSIX_LOCK
8333 | NFS_CAP_STATEID_NFSV41
8334 | NFS_CAP_ATOMIC_OPEN_V1
,
8335 .init_client
= nfs41_init_client
,
8336 .shutdown_client
= nfs41_shutdown_client
,
8337 .match_stateid
= nfs41_match_stateid
,
8338 .find_root_sec
= nfs41_find_root_sec
,
8339 .free_lock_state
= nfs41_free_lock_state
,
8340 .call_sync_ops
= &nfs41_call_sync_ops
,
8341 .reboot_recovery_ops
= &nfs41_reboot_recovery_ops
,
8342 .nograce_recovery_ops
= &nfs41_nograce_recovery_ops
,
8343 .state_renewal_ops
= &nfs41_state_renewal_ops
,
8347 const struct nfs4_minor_version_ops
*nfs_v4_minor_ops
[] = {
8348 [0] = &nfs_v4_0_minor_ops
,
8349 #if defined(CONFIG_NFS_V4_1)
8350 [1] = &nfs_v4_1_minor_ops
,
8352 #if defined(CONFIG_NFS_V4_2)
8353 [2] = &nfs_v4_2_minor_ops
,
8357 static const struct inode_operations nfs4_dir_inode_operations
= {
8358 .create
= nfs_create
,
8359 .lookup
= nfs_lookup
,
8360 .atomic_open
= nfs_atomic_open
,
8362 .unlink
= nfs_unlink
,
8363 .symlink
= nfs_symlink
,
8367 .rename
= nfs_rename
,
8368 .permission
= nfs_permission
,
8369 .getattr
= nfs_getattr
,
8370 .setattr
= nfs_setattr
,
8371 .getxattr
= generic_getxattr
,
8372 .setxattr
= generic_setxattr
,
8373 .listxattr
= generic_listxattr
,
8374 .removexattr
= generic_removexattr
,
8377 static const struct inode_operations nfs4_file_inode_operations
= {
8378 .permission
= nfs_permission
,
8379 .getattr
= nfs_getattr
,
8380 .setattr
= nfs_setattr
,
8381 .getxattr
= generic_getxattr
,
8382 .setxattr
= generic_setxattr
,
8383 .listxattr
= generic_listxattr
,
8384 .removexattr
= generic_removexattr
,
8387 const struct nfs_rpc_ops nfs_v4_clientops
= {
8388 .version
= 4, /* protocol version */
8389 .dentry_ops
= &nfs4_dentry_operations
,
8390 .dir_inode_ops
= &nfs4_dir_inode_operations
,
8391 .file_inode_ops
= &nfs4_file_inode_operations
,
8392 .file_ops
= &nfs4_file_operations
,
8393 .getroot
= nfs4_proc_get_root
,
8394 .submount
= nfs4_submount
,
8395 .try_mount
= nfs4_try_mount
,
8396 .getattr
= nfs4_proc_getattr
,
8397 .setattr
= nfs4_proc_setattr
,
8398 .lookup
= nfs4_proc_lookup
,
8399 .access
= nfs4_proc_access
,
8400 .readlink
= nfs4_proc_readlink
,
8401 .create
= nfs4_proc_create
,
8402 .remove
= nfs4_proc_remove
,
8403 .unlink_setup
= nfs4_proc_unlink_setup
,
8404 .unlink_rpc_prepare
= nfs4_proc_unlink_rpc_prepare
,
8405 .unlink_done
= nfs4_proc_unlink_done
,
8406 .rename_setup
= nfs4_proc_rename_setup
,
8407 .rename_rpc_prepare
= nfs4_proc_rename_rpc_prepare
,
8408 .rename_done
= nfs4_proc_rename_done
,
8409 .link
= nfs4_proc_link
,
8410 .symlink
= nfs4_proc_symlink
,
8411 .mkdir
= nfs4_proc_mkdir
,
8412 .rmdir
= nfs4_proc_remove
,
8413 .readdir
= nfs4_proc_readdir
,
8414 .mknod
= nfs4_proc_mknod
,
8415 .statfs
= nfs4_proc_statfs
,
8416 .fsinfo
= nfs4_proc_fsinfo
,
8417 .pathconf
= nfs4_proc_pathconf
,
8418 .set_capabilities
= nfs4_server_capabilities
,
8419 .decode_dirent
= nfs4_decode_dirent
,
8420 .pgio_rpc_prepare
= nfs4_proc_pgio_rpc_prepare
,
8421 .read_setup
= nfs4_proc_read_setup
,
8422 .read_done
= nfs4_read_done
,
8423 .write_setup
= nfs4_proc_write_setup
,
8424 .write_done
= nfs4_write_done
,
8425 .commit_setup
= nfs4_proc_commit_setup
,
8426 .commit_rpc_prepare
= nfs4_proc_commit_rpc_prepare
,
8427 .commit_done
= nfs4_commit_done
,
8428 .lock
= nfs4_proc_lock
,
8429 .clear_acl_cache
= nfs4_zap_acl_attr
,
8430 .close_context
= nfs4_close_context
,
8431 .open_context
= nfs4_atomic_open
,
8432 .have_delegation
= nfs4_have_delegation
,
8433 .return_delegation
= nfs4_inode_return_delegation
,
8434 .alloc_client
= nfs4_alloc_client
,
8435 .init_client
= nfs4_init_client
,
8436 .free_client
= nfs4_free_client
,
8437 .create_server
= nfs4_create_server
,
8438 .clone_server
= nfs_clone_server
,
8441 static const struct xattr_handler nfs4_xattr_nfs4_acl_handler
= {
8442 .prefix
= XATTR_NAME_NFSV4_ACL
,
8443 .list
= nfs4_xattr_list_nfs4_acl
,
8444 .get
= nfs4_xattr_get_nfs4_acl
,
8445 .set
= nfs4_xattr_set_nfs4_acl
,
8448 const struct xattr_handler
*nfs4_xattr_handlers
[] = {
8449 &nfs4_xattr_nfs4_acl_handler
,
8450 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
8451 &nfs4_xattr_nfs4_label_handler
,