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
);
1956 * Additional permission checks in order to distinguish between an
1957 * open for read, and an open for execute. This works around the
1958 * fact that NFSv4 OPEN treats read and execute permissions as being
1960 * Note that in the non-execute case, we want to turn off permission
1961 * checking if we just created a new file (POSIX open() semantics).
1963 static int nfs4_opendata_access(struct rpc_cred
*cred
,
1964 struct nfs4_opendata
*opendata
,
1965 struct nfs4_state
*state
, fmode_t fmode
,
1968 struct nfs_access_entry cache
;
1971 /* access call failed or for some reason the server doesn't
1972 * support any access modes -- defer access call until later */
1973 if (opendata
->o_res
.access_supported
== 0)
1978 * Use openflags to check for exec, because fmode won't
1979 * always have FMODE_EXEC set when file open for exec.
1981 if (openflags
& __FMODE_EXEC
) {
1982 /* ONLY check for exec rights */
1984 } else if ((fmode
& FMODE_READ
) && !opendata
->file_created
)
1988 cache
.jiffies
= jiffies
;
1989 nfs_access_set_mask(&cache
, opendata
->o_res
.access_result
);
1990 nfs_access_add_cache(state
->inode
, &cache
);
1992 if ((mask
& ~cache
.mask
& (MAY_READ
| MAY_EXEC
)) == 0)
1995 /* even though OPEN succeeded, access is denied. Close the file */
1996 nfs4_close_state(state
, fmode
);
2001 * Note: On error, nfs4_proc_open will free the struct nfs4_opendata
2003 static int _nfs4_proc_open(struct nfs4_opendata
*data
)
2005 struct inode
*dir
= data
->dir
->d_inode
;
2006 struct nfs_server
*server
= NFS_SERVER(dir
);
2007 struct nfs_openargs
*o_arg
= &data
->o_arg
;
2008 struct nfs_openres
*o_res
= &data
->o_res
;
2011 status
= nfs4_run_open_task(data
, 0);
2012 if (!data
->rpc_done
)
2015 if (status
== -NFS4ERR_BADNAME
&&
2016 !(o_arg
->open_flags
& O_CREAT
))
2021 nfs_fattr_map_and_free_names(server
, &data
->f_attr
);
2023 if (o_arg
->open_flags
& O_CREAT
) {
2024 update_changeattr(dir
, &o_res
->cinfo
);
2025 if (o_arg
->open_flags
& O_EXCL
)
2026 data
->file_created
= 1;
2027 else if (o_res
->cinfo
.before
!= o_res
->cinfo
.after
)
2028 data
->file_created
= 1;
2030 if ((o_res
->rflags
& NFS4_OPEN_RESULT_LOCKTYPE_POSIX
) == 0)
2031 server
->caps
&= ~NFS_CAP_POSIX_LOCK
;
2032 if(o_res
->rflags
& NFS4_OPEN_RESULT_CONFIRM
) {
2033 status
= _nfs4_proc_open_confirm(data
);
2037 if (!(o_res
->f_attr
->valid
& NFS_ATTR_FATTR
))
2038 nfs4_proc_getattr(server
, &o_res
->fh
, o_res
->f_attr
, o_res
->f_label
);
2042 static int nfs4_recover_expired_lease(struct nfs_server
*server
)
2044 return nfs4_client_recover_expired_lease(server
->nfs_client
);
2049 * reclaim state on the server after a network partition.
2050 * Assumes caller holds the appropriate lock
2052 static int _nfs4_open_expired(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
2054 struct nfs4_opendata
*opendata
;
2057 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
,
2058 NFS4_OPEN_CLAIM_FH
);
2059 if (IS_ERR(opendata
))
2060 return PTR_ERR(opendata
);
2061 ret
= nfs4_open_recover(opendata
, state
);
2063 d_drop(ctx
->dentry
);
2064 nfs4_opendata_put(opendata
);
2068 static int nfs4_do_open_expired(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
2070 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
2071 struct nfs4_exception exception
= { };
2075 err
= _nfs4_open_expired(ctx
, state
);
2076 trace_nfs4_open_expired(ctx
, 0, err
);
2077 if (nfs4_clear_cap_atomic_open_v1(server
, err
, &exception
))
2082 case -NFS4ERR_GRACE
:
2083 case -NFS4ERR_DELAY
:
2084 nfs4_handle_exception(server
, err
, &exception
);
2087 } while (exception
.retry
);
2092 static int nfs4_open_expired(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
2094 struct nfs_open_context
*ctx
;
2097 ctx
= nfs4_state_find_open_context(state
);
2100 ret
= nfs4_do_open_expired(ctx
, state
);
2101 put_nfs_open_context(ctx
);
2105 #if defined(CONFIG_NFS_V4_1)
2106 static void nfs41_clear_delegation_stateid(struct nfs4_state
*state
)
2108 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
2109 nfs4_stateid
*stateid
= &state
->stateid
;
2110 struct nfs_delegation
*delegation
;
2111 struct rpc_cred
*cred
= NULL
;
2112 int status
= -NFS4ERR_BAD_STATEID
;
2114 /* If a state reset has been done, test_stateid is unneeded */
2115 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0)
2118 /* Get the delegation credential for use by test/free_stateid */
2120 delegation
= rcu_dereference(NFS_I(state
->inode
)->delegation
);
2121 if (delegation
!= NULL
&&
2122 nfs4_stateid_match(&delegation
->stateid
, stateid
)) {
2123 cred
= get_rpccred(delegation
->cred
);
2125 status
= nfs41_test_stateid(server
, stateid
, cred
);
2126 trace_nfs4_test_delegation_stateid(state
, NULL
, status
);
2130 if (status
!= NFS_OK
) {
2131 /* Free the stateid unless the server explicitly
2132 * informs us the stateid is unrecognized. */
2133 if (status
!= -NFS4ERR_BAD_STATEID
)
2134 nfs41_free_stateid(server
, stateid
, cred
);
2135 nfs_remove_bad_delegation(state
->inode
);
2137 write_seqlock(&state
->seqlock
);
2138 nfs4_stateid_copy(&state
->stateid
, &state
->open_stateid
);
2139 write_sequnlock(&state
->seqlock
);
2140 clear_bit(NFS_DELEGATED_STATE
, &state
->flags
);
2148 * nfs41_check_open_stateid - possibly free an open stateid
2150 * @state: NFSv4 state for an inode
2152 * Returns NFS_OK if recovery for this stateid is now finished.
2153 * Otherwise a negative NFS4ERR value is returned.
2155 static int nfs41_check_open_stateid(struct nfs4_state
*state
)
2157 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
2158 nfs4_stateid
*stateid
= &state
->open_stateid
;
2159 struct rpc_cred
*cred
= state
->owner
->so_cred
;
2162 /* If a state reset has been done, test_stateid is unneeded */
2163 if ((test_bit(NFS_O_RDONLY_STATE
, &state
->flags
) == 0) &&
2164 (test_bit(NFS_O_WRONLY_STATE
, &state
->flags
) == 0) &&
2165 (test_bit(NFS_O_RDWR_STATE
, &state
->flags
) == 0))
2166 return -NFS4ERR_BAD_STATEID
;
2168 status
= nfs41_test_stateid(server
, stateid
, cred
);
2169 trace_nfs4_test_open_stateid(state
, NULL
, status
);
2170 if (status
!= NFS_OK
) {
2171 /* Free the stateid unless the server explicitly
2172 * informs us the stateid is unrecognized. */
2173 if (status
!= -NFS4ERR_BAD_STATEID
)
2174 nfs41_free_stateid(server
, stateid
, cred
);
2176 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
2177 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
2178 clear_bit(NFS_O_RDWR_STATE
, &state
->flags
);
2179 clear_bit(NFS_OPEN_STATE
, &state
->flags
);
2184 static int nfs41_open_expired(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
2188 nfs41_clear_delegation_stateid(state
);
2189 status
= nfs41_check_open_stateid(state
);
2190 if (status
!= NFS_OK
)
2191 status
= nfs4_open_expired(sp
, state
);
2197 * on an EXCLUSIVE create, the server should send back a bitmask with FATTR4-*
2198 * fields corresponding to attributes that were used to store the verifier.
2199 * Make sure we clobber those fields in the later setattr call
2201 static inline void nfs4_exclusive_attrset(struct nfs4_opendata
*opendata
, struct iattr
*sattr
)
2203 if ((opendata
->o_res
.attrset
[1] & FATTR4_WORD1_TIME_ACCESS
) &&
2204 !(sattr
->ia_valid
& ATTR_ATIME_SET
))
2205 sattr
->ia_valid
|= ATTR_ATIME
;
2207 if ((opendata
->o_res
.attrset
[1] & FATTR4_WORD1_TIME_MODIFY
) &&
2208 !(sattr
->ia_valid
& ATTR_MTIME_SET
))
2209 sattr
->ia_valid
|= ATTR_MTIME
;
2212 static int _nfs4_open_and_get_state(struct nfs4_opendata
*opendata
,
2215 struct nfs_open_context
*ctx
)
2217 struct nfs4_state_owner
*sp
= opendata
->owner
;
2218 struct nfs_server
*server
= sp
->so_server
;
2219 struct dentry
*dentry
;
2220 struct nfs4_state
*state
;
2224 seq
= raw_seqcount_begin(&sp
->so_reclaim_seqcount
);
2226 ret
= _nfs4_proc_open(opendata
);
2228 if (ret
== -ENOENT
) {
2229 d_drop(opendata
->dentry
);
2230 d_add(opendata
->dentry
, NULL
);
2231 nfs_set_verifier(opendata
->dentry
,
2232 nfs_save_change_attribute(opendata
->dir
->d_inode
));
2237 state
= nfs4_opendata_to_nfs4_state(opendata
);
2238 ret
= PTR_ERR(state
);
2241 if (server
->caps
& NFS_CAP_POSIX_LOCK
)
2242 set_bit(NFS_STATE_POSIX_LOCKS
, &state
->flags
);
2244 dentry
= opendata
->dentry
;
2245 if (dentry
->d_inode
== NULL
) {
2246 /* FIXME: Is this d_drop() ever needed? */
2248 dentry
= d_add_unique(dentry
, igrab(state
->inode
));
2249 if (dentry
== NULL
) {
2250 dentry
= opendata
->dentry
;
2251 } else if (dentry
!= ctx
->dentry
) {
2253 ctx
->dentry
= dget(dentry
);
2255 nfs_set_verifier(dentry
,
2256 nfs_save_change_attribute(opendata
->dir
->d_inode
));
2259 ret
= nfs4_opendata_access(sp
->so_cred
, opendata
, state
, fmode
, flags
);
2264 if (dentry
->d_inode
== state
->inode
) {
2265 nfs_inode_attach_open_context(ctx
);
2266 if (read_seqcount_retry(&sp
->so_reclaim_seqcount
, seq
))
2267 nfs4_schedule_stateid_recovery(server
, state
);
2274 * Returns a referenced nfs4_state
2276 static int _nfs4_do_open(struct inode
*dir
,
2277 struct nfs_open_context
*ctx
,
2279 struct iattr
*sattr
,
2280 struct nfs4_label
*label
,
2283 struct nfs4_state_owner
*sp
;
2284 struct nfs4_state
*state
= NULL
;
2285 struct nfs_server
*server
= NFS_SERVER(dir
);
2286 struct nfs4_opendata
*opendata
;
2287 struct dentry
*dentry
= ctx
->dentry
;
2288 struct rpc_cred
*cred
= ctx
->cred
;
2289 struct nfs4_threshold
**ctx_th
= &ctx
->mdsthreshold
;
2290 fmode_t fmode
= ctx
->mode
& (FMODE_READ
|FMODE_WRITE
|FMODE_EXEC
);
2291 enum open_claim_type4 claim
= NFS4_OPEN_CLAIM_NULL
;
2292 struct nfs4_label
*olabel
= NULL
;
2295 /* Protect against reboot recovery conflicts */
2297 sp
= nfs4_get_state_owner(server
, cred
, GFP_KERNEL
);
2299 dprintk("nfs4_do_open: nfs4_get_state_owner failed!\n");
2302 status
= nfs4_recover_expired_lease(server
);
2304 goto err_put_state_owner
;
2305 if (dentry
->d_inode
!= NULL
)
2306 nfs4_return_incompatible_delegation(dentry
->d_inode
, fmode
);
2308 if (dentry
->d_inode
)
2309 claim
= NFS4_OPEN_CLAIM_FH
;
2310 opendata
= nfs4_opendata_alloc(dentry
, sp
, fmode
, flags
, sattr
,
2311 label
, claim
, GFP_KERNEL
);
2312 if (opendata
== NULL
)
2313 goto err_put_state_owner
;
2316 olabel
= nfs4_label_alloc(server
, GFP_KERNEL
);
2317 if (IS_ERR(olabel
)) {
2318 status
= PTR_ERR(olabel
);
2319 goto err_opendata_put
;
2323 if (server
->attr_bitmask
[2] & FATTR4_WORD2_MDSTHRESHOLD
) {
2324 if (!opendata
->f_attr
.mdsthreshold
) {
2325 opendata
->f_attr
.mdsthreshold
= pnfs_mdsthreshold_alloc();
2326 if (!opendata
->f_attr
.mdsthreshold
)
2327 goto err_free_label
;
2329 opendata
->o_arg
.open_bitmap
= &nfs4_pnfs_open_bitmap
[0];
2331 if (dentry
->d_inode
!= NULL
)
2332 opendata
->state
= nfs4_get_open_state(dentry
->d_inode
, sp
);
2334 status
= _nfs4_open_and_get_state(opendata
, fmode
, flags
, ctx
);
2336 goto err_free_label
;
2339 if ((opendata
->o_arg
.open_flags
& O_EXCL
) &&
2340 (opendata
->o_arg
.createmode
!= NFS4_CREATE_GUARDED
)) {
2341 nfs4_exclusive_attrset(opendata
, sattr
);
2343 nfs_fattr_init(opendata
->o_res
.f_attr
);
2344 status
= nfs4_do_setattr(state
->inode
, cred
,
2345 opendata
->o_res
.f_attr
, sattr
,
2346 state
, label
, olabel
);
2348 nfs_setattr_update_inode(state
->inode
, sattr
);
2349 nfs_post_op_update_inode(state
->inode
, opendata
->o_res
.f_attr
);
2350 nfs_setsecurity(state
->inode
, opendata
->o_res
.f_attr
, olabel
);
2353 if (opendata
->file_created
)
2354 *opened
|= FILE_CREATED
;
2356 if (pnfs_use_threshold(ctx_th
, opendata
->f_attr
.mdsthreshold
, server
)) {
2357 *ctx_th
= opendata
->f_attr
.mdsthreshold
;
2358 opendata
->f_attr
.mdsthreshold
= NULL
;
2361 nfs4_label_free(olabel
);
2363 nfs4_opendata_put(opendata
);
2364 nfs4_put_state_owner(sp
);
2367 nfs4_label_free(olabel
);
2369 nfs4_opendata_put(opendata
);
2370 err_put_state_owner
:
2371 nfs4_put_state_owner(sp
);
2377 static struct nfs4_state
*nfs4_do_open(struct inode
*dir
,
2378 struct nfs_open_context
*ctx
,
2380 struct iattr
*sattr
,
2381 struct nfs4_label
*label
,
2384 struct nfs_server
*server
= NFS_SERVER(dir
);
2385 struct nfs4_exception exception
= { };
2386 struct nfs4_state
*res
;
2390 status
= _nfs4_do_open(dir
, ctx
, flags
, sattr
, label
, opened
);
2392 trace_nfs4_open_file(ctx
, flags
, status
);
2395 /* NOTE: BAD_SEQID means the server and client disagree about the
2396 * book-keeping w.r.t. state-changing operations
2397 * (OPEN/CLOSE/LOCK/LOCKU...)
2398 * It is actually a sign of a bug on the client or on the server.
2400 * If we receive a BAD_SEQID error in the particular case of
2401 * doing an OPEN, we assume that nfs_increment_open_seqid() will
2402 * have unhashed the old state_owner for us, and that we can
2403 * therefore safely retry using a new one. We should still warn
2404 * the user though...
2406 if (status
== -NFS4ERR_BAD_SEQID
) {
2407 pr_warn_ratelimited("NFS: v4 server %s "
2408 " returned a bad sequence-id error!\n",
2409 NFS_SERVER(dir
)->nfs_client
->cl_hostname
);
2410 exception
.retry
= 1;
2414 * BAD_STATEID on OPEN means that the server cancelled our
2415 * state before it received the OPEN_CONFIRM.
2416 * Recover by retrying the request as per the discussion
2417 * on Page 181 of RFC3530.
2419 if (status
== -NFS4ERR_BAD_STATEID
) {
2420 exception
.retry
= 1;
2423 if (status
== -EAGAIN
) {
2424 /* We must have found a delegation */
2425 exception
.retry
= 1;
2428 if (nfs4_clear_cap_atomic_open_v1(server
, status
, &exception
))
2430 res
= ERR_PTR(nfs4_handle_exception(server
,
2431 status
, &exception
));
2432 } while (exception
.retry
);
2436 static int _nfs4_do_setattr(struct inode
*inode
, struct rpc_cred
*cred
,
2437 struct nfs_fattr
*fattr
, struct iattr
*sattr
,
2438 struct nfs4_state
*state
, struct nfs4_label
*ilabel
,
2439 struct nfs4_label
*olabel
)
2441 struct nfs_server
*server
= NFS_SERVER(inode
);
2442 struct nfs_setattrargs arg
= {
2443 .fh
= NFS_FH(inode
),
2446 .bitmask
= server
->attr_bitmask
,
2449 struct nfs_setattrres res
= {
2454 struct rpc_message msg
= {
2455 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETATTR
],
2460 unsigned long timestamp
= jiffies
;
2465 arg
.bitmask
= nfs4_bitmask(server
, ilabel
);
2467 arg
.bitmask
= nfs4_bitmask(server
, olabel
);
2469 nfs_fattr_init(fattr
);
2471 /* Servers should only apply open mode checks for file size changes */
2472 truncate
= (sattr
->ia_valid
& ATTR_SIZE
) ? true : false;
2473 fmode
= truncate
? FMODE_WRITE
: FMODE_READ
;
2475 if (nfs4_copy_delegation_stateid(&arg
.stateid
, inode
, fmode
)) {
2476 /* Use that stateid */
2477 } else if (truncate
&& state
!= NULL
) {
2478 struct nfs_lockowner lockowner
= {
2479 .l_owner
= current
->files
,
2480 .l_pid
= current
->tgid
,
2482 if (!nfs4_valid_open_stateid(state
))
2484 if (nfs4_select_rw_stateid(&arg
.stateid
, state
, FMODE_WRITE
,
2485 &lockowner
) == -EIO
)
2488 nfs4_stateid_copy(&arg
.stateid
, &zero_stateid
);
2490 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
2491 if (status
== 0 && state
!= NULL
)
2492 renew_lease(server
, timestamp
);
2496 static int nfs4_do_setattr(struct inode
*inode
, struct rpc_cred
*cred
,
2497 struct nfs_fattr
*fattr
, struct iattr
*sattr
,
2498 struct nfs4_state
*state
, struct nfs4_label
*ilabel
,
2499 struct nfs4_label
*olabel
)
2501 struct nfs_server
*server
= NFS_SERVER(inode
);
2502 struct nfs4_exception exception
= {
2508 err
= _nfs4_do_setattr(inode
, cred
, fattr
, sattr
, state
, ilabel
, olabel
);
2509 trace_nfs4_setattr(inode
, err
);
2511 case -NFS4ERR_OPENMODE
:
2512 if (!(sattr
->ia_valid
& ATTR_SIZE
)) {
2513 pr_warn_once("NFSv4: server %s is incorrectly "
2514 "applying open mode checks to "
2515 "a SETATTR that is not "
2516 "changing file size.\n",
2517 server
->nfs_client
->cl_hostname
);
2519 if (state
&& !(state
->state
& FMODE_WRITE
)) {
2521 if (sattr
->ia_valid
& ATTR_OPEN
)
2526 err
= nfs4_handle_exception(server
, err
, &exception
);
2527 } while (exception
.retry
);
2532 struct nfs4_closedata
{
2533 struct inode
*inode
;
2534 struct nfs4_state
*state
;
2535 struct nfs_closeargs arg
;
2536 struct nfs_closeres res
;
2537 struct nfs_fattr fattr
;
2538 unsigned long timestamp
;
2543 static void nfs4_free_closedata(void *data
)
2545 struct nfs4_closedata
*calldata
= data
;
2546 struct nfs4_state_owner
*sp
= calldata
->state
->owner
;
2547 struct super_block
*sb
= calldata
->state
->inode
->i_sb
;
2550 pnfs_roc_release(calldata
->state
->inode
);
2551 nfs4_put_open_state(calldata
->state
);
2552 nfs_free_seqid(calldata
->arg
.seqid
);
2553 nfs4_put_state_owner(sp
);
2554 nfs_sb_deactive(sb
);
2558 static void nfs4_close_done(struct rpc_task
*task
, void *data
)
2560 struct nfs4_closedata
*calldata
= data
;
2561 struct nfs4_state
*state
= calldata
->state
;
2562 struct nfs_server
*server
= NFS_SERVER(calldata
->inode
);
2563 nfs4_stateid
*res_stateid
= NULL
;
2565 dprintk("%s: begin!\n", __func__
);
2566 if (!nfs4_sequence_done(task
, &calldata
->res
.seq_res
))
2568 trace_nfs4_close(state
, &calldata
->arg
, &calldata
->res
, task
->tk_status
);
2569 /* hmm. we are done with the inode, and in the process of freeing
2570 * the state_owner. we keep this around to process errors
2572 switch (task
->tk_status
) {
2574 res_stateid
= &calldata
->res
.stateid
;
2575 if (calldata
->arg
.fmode
== 0 && calldata
->roc
)
2576 pnfs_roc_set_barrier(state
->inode
,
2577 calldata
->roc_barrier
);
2578 renew_lease(server
, calldata
->timestamp
);
2580 case -NFS4ERR_ADMIN_REVOKED
:
2581 case -NFS4ERR_STALE_STATEID
:
2582 case -NFS4ERR_OLD_STATEID
:
2583 case -NFS4ERR_BAD_STATEID
:
2584 case -NFS4ERR_EXPIRED
:
2585 if (calldata
->arg
.fmode
== 0)
2588 if (nfs4_async_handle_error(task
, server
, state
) == -EAGAIN
) {
2589 rpc_restart_call_prepare(task
);
2593 nfs_clear_open_stateid(state
, res_stateid
, calldata
->arg
.fmode
);
2595 nfs_release_seqid(calldata
->arg
.seqid
);
2596 nfs_refresh_inode(calldata
->inode
, calldata
->res
.fattr
);
2597 dprintk("%s: done, ret = %d!\n", __func__
, task
->tk_status
);
2600 static void nfs4_close_prepare(struct rpc_task
*task
, void *data
)
2602 struct nfs4_closedata
*calldata
= data
;
2603 struct nfs4_state
*state
= calldata
->state
;
2604 struct inode
*inode
= calldata
->inode
;
2605 bool is_rdonly
, is_wronly
, is_rdwr
;
2608 dprintk("%s: begin!\n", __func__
);
2609 if (nfs_wait_on_sequence(calldata
->arg
.seqid
, task
) != 0)
2612 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_DOWNGRADE
];
2613 spin_lock(&state
->owner
->so_lock
);
2614 is_rdwr
= test_bit(NFS_O_RDWR_STATE
, &state
->flags
);
2615 is_rdonly
= test_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
2616 is_wronly
= test_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
2617 /* Calculate the current open share mode */
2618 calldata
->arg
.fmode
= 0;
2619 if (is_rdonly
|| is_rdwr
)
2620 calldata
->arg
.fmode
|= FMODE_READ
;
2621 if (is_wronly
|| is_rdwr
)
2622 calldata
->arg
.fmode
|= FMODE_WRITE
;
2623 /* Calculate the change in open mode */
2624 if (state
->n_rdwr
== 0) {
2625 if (state
->n_rdonly
== 0) {
2626 call_close
|= is_rdonly
|| is_rdwr
;
2627 calldata
->arg
.fmode
&= ~FMODE_READ
;
2629 if (state
->n_wronly
== 0) {
2630 call_close
|= is_wronly
|| is_rdwr
;
2631 calldata
->arg
.fmode
&= ~FMODE_WRITE
;
2634 if (!nfs4_valid_open_stateid(state
))
2636 spin_unlock(&state
->owner
->so_lock
);
2639 /* Note: exit _without_ calling nfs4_close_done */
2643 if (calldata
->arg
.fmode
== 0) {
2644 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CLOSE
];
2645 if (calldata
->roc
&&
2646 pnfs_roc_drain(inode
, &calldata
->roc_barrier
, task
)) {
2647 nfs_release_seqid(calldata
->arg
.seqid
);
2652 nfs_fattr_init(calldata
->res
.fattr
);
2653 calldata
->timestamp
= jiffies
;
2654 if (nfs4_setup_sequence(NFS_SERVER(inode
),
2655 &calldata
->arg
.seq_args
,
2656 &calldata
->res
.seq_res
,
2658 nfs_release_seqid(calldata
->arg
.seqid
);
2659 dprintk("%s: done!\n", __func__
);
2662 task
->tk_action
= NULL
;
2664 nfs4_sequence_done(task
, &calldata
->res
.seq_res
);
2667 static const struct rpc_call_ops nfs4_close_ops
= {
2668 .rpc_call_prepare
= nfs4_close_prepare
,
2669 .rpc_call_done
= nfs4_close_done
,
2670 .rpc_release
= nfs4_free_closedata
,
2673 static bool nfs4_state_has_opener(struct nfs4_state
*state
)
2675 /* first check existing openers */
2676 if (test_bit(NFS_O_RDONLY_STATE
, &state
->flags
) != 0 &&
2677 state
->n_rdonly
!= 0)
2680 if (test_bit(NFS_O_WRONLY_STATE
, &state
->flags
) != 0 &&
2681 state
->n_wronly
!= 0)
2684 if (test_bit(NFS_O_RDWR_STATE
, &state
->flags
) != 0 &&
2691 static bool nfs4_roc(struct inode
*inode
)
2693 struct nfs_inode
*nfsi
= NFS_I(inode
);
2694 struct nfs_open_context
*ctx
;
2695 struct nfs4_state
*state
;
2697 spin_lock(&inode
->i_lock
);
2698 list_for_each_entry(ctx
, &nfsi
->open_files
, list
) {
2702 if (nfs4_state_has_opener(state
)) {
2703 spin_unlock(&inode
->i_lock
);
2707 spin_unlock(&inode
->i_lock
);
2709 if (nfs4_check_delegation(inode
, FMODE_READ
))
2712 return pnfs_roc(inode
);
2716 * It is possible for data to be read/written from a mem-mapped file
2717 * after the sys_close call (which hits the vfs layer as a flush).
2718 * This means that we can't safely call nfsv4 close on a file until
2719 * the inode is cleared. This in turn means that we are not good
2720 * NFSv4 citizens - we do not indicate to the server to update the file's
2721 * share state even when we are done with one of the three share
2722 * stateid's in the inode.
2724 * NOTE: Caller must be holding the sp->so_owner semaphore!
2726 int nfs4_do_close(struct nfs4_state
*state
, gfp_t gfp_mask
, int wait
)
2728 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
2729 struct nfs4_closedata
*calldata
;
2730 struct nfs4_state_owner
*sp
= state
->owner
;
2731 struct rpc_task
*task
;
2732 struct rpc_message msg
= {
2733 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CLOSE
],
2734 .rpc_cred
= state
->owner
->so_cred
,
2736 struct rpc_task_setup task_setup_data
= {
2737 .rpc_client
= server
->client
,
2738 .rpc_message
= &msg
,
2739 .callback_ops
= &nfs4_close_ops
,
2740 .workqueue
= nfsiod_workqueue
,
2741 .flags
= RPC_TASK_ASYNC
,
2743 int status
= -ENOMEM
;
2745 nfs4_state_protect(server
->nfs_client
, NFS_SP4_MACH_CRED_CLEANUP
,
2746 &task_setup_data
.rpc_client
, &msg
);
2748 calldata
= kzalloc(sizeof(*calldata
), gfp_mask
);
2749 if (calldata
== NULL
)
2751 nfs4_init_sequence(&calldata
->arg
.seq_args
, &calldata
->res
.seq_res
, 1);
2752 calldata
->inode
= state
->inode
;
2753 calldata
->state
= state
;
2754 calldata
->arg
.fh
= NFS_FH(state
->inode
);
2755 calldata
->arg
.stateid
= &state
->open_stateid
;
2756 /* Serialization for the sequence id */
2757 calldata
->arg
.seqid
= nfs_alloc_seqid(&state
->owner
->so_seqid
, gfp_mask
);
2758 if (calldata
->arg
.seqid
== NULL
)
2759 goto out_free_calldata
;
2760 calldata
->arg
.fmode
= 0;
2761 calldata
->arg
.bitmask
= server
->cache_consistency_bitmask
;
2762 calldata
->res
.fattr
= &calldata
->fattr
;
2763 calldata
->res
.seqid
= calldata
->arg
.seqid
;
2764 calldata
->res
.server
= server
;
2765 calldata
->roc
= nfs4_roc(state
->inode
);
2766 nfs_sb_active(calldata
->inode
->i_sb
);
2768 msg
.rpc_argp
= &calldata
->arg
;
2769 msg
.rpc_resp
= &calldata
->res
;
2770 task_setup_data
.callback_data
= calldata
;
2771 task
= rpc_run_task(&task_setup_data
);
2773 return PTR_ERR(task
);
2776 status
= rpc_wait_for_completion_task(task
);
2782 nfs4_put_open_state(state
);
2783 nfs4_put_state_owner(sp
);
2787 static struct inode
*
2788 nfs4_atomic_open(struct inode
*dir
, struct nfs_open_context
*ctx
,
2789 int open_flags
, struct iattr
*attr
, int *opened
)
2791 struct nfs4_state
*state
;
2792 struct nfs4_label l
= {0, 0, 0, NULL
}, *label
= NULL
;
2794 label
= nfs4_label_init_security(dir
, ctx
->dentry
, attr
, &l
);
2796 /* Protect against concurrent sillydeletes */
2797 state
= nfs4_do_open(dir
, ctx
, open_flags
, attr
, label
, opened
);
2799 nfs4_label_release_security(label
);
2802 return ERR_CAST(state
);
2803 return state
->inode
;
2806 static void nfs4_close_context(struct nfs_open_context
*ctx
, int is_sync
)
2808 if (ctx
->state
== NULL
)
2811 nfs4_close_sync(ctx
->state
, ctx
->mode
);
2813 nfs4_close_state(ctx
->state
, ctx
->mode
);
2816 #define FATTR4_WORD1_NFS40_MASK (2*FATTR4_WORD1_MOUNTED_ON_FILEID - 1UL)
2817 #define FATTR4_WORD2_NFS41_MASK (2*FATTR4_WORD2_SUPPATTR_EXCLCREAT - 1UL)
2818 #define FATTR4_WORD2_NFS42_MASK (2*FATTR4_WORD2_SECURITY_LABEL - 1UL)
2820 static int _nfs4_server_capabilities(struct nfs_server
*server
, struct nfs_fh
*fhandle
)
2822 struct nfs4_server_caps_arg args
= {
2825 struct nfs4_server_caps_res res
= {};
2826 struct rpc_message msg
= {
2827 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SERVER_CAPS
],
2833 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2835 /* Sanity check the server answers */
2836 switch (server
->nfs_client
->cl_minorversion
) {
2838 res
.attr_bitmask
[1] &= FATTR4_WORD1_NFS40_MASK
;
2839 res
.attr_bitmask
[2] = 0;
2842 res
.attr_bitmask
[2] &= FATTR4_WORD2_NFS41_MASK
;
2845 res
.attr_bitmask
[2] &= FATTR4_WORD2_NFS42_MASK
;
2847 memcpy(server
->attr_bitmask
, res
.attr_bitmask
, sizeof(server
->attr_bitmask
));
2848 server
->caps
&= ~(NFS_CAP_ACLS
|NFS_CAP_HARDLINKS
|
2849 NFS_CAP_SYMLINKS
|NFS_CAP_FILEID
|
2850 NFS_CAP_MODE
|NFS_CAP_NLINK
|NFS_CAP_OWNER
|
2851 NFS_CAP_OWNER_GROUP
|NFS_CAP_ATIME
|
2852 NFS_CAP_CTIME
|NFS_CAP_MTIME
|
2853 NFS_CAP_SECURITY_LABEL
);
2854 if (res
.attr_bitmask
[0] & FATTR4_WORD0_ACL
&&
2855 res
.acl_bitmask
& ACL4_SUPPORT_ALLOW_ACL
)
2856 server
->caps
|= NFS_CAP_ACLS
;
2857 if (res
.has_links
!= 0)
2858 server
->caps
|= NFS_CAP_HARDLINKS
;
2859 if (res
.has_symlinks
!= 0)
2860 server
->caps
|= NFS_CAP_SYMLINKS
;
2861 if (res
.attr_bitmask
[0] & FATTR4_WORD0_FILEID
)
2862 server
->caps
|= NFS_CAP_FILEID
;
2863 if (res
.attr_bitmask
[1] & FATTR4_WORD1_MODE
)
2864 server
->caps
|= NFS_CAP_MODE
;
2865 if (res
.attr_bitmask
[1] & FATTR4_WORD1_NUMLINKS
)
2866 server
->caps
|= NFS_CAP_NLINK
;
2867 if (res
.attr_bitmask
[1] & FATTR4_WORD1_OWNER
)
2868 server
->caps
|= NFS_CAP_OWNER
;
2869 if (res
.attr_bitmask
[1] & FATTR4_WORD1_OWNER_GROUP
)
2870 server
->caps
|= NFS_CAP_OWNER_GROUP
;
2871 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_ACCESS
)
2872 server
->caps
|= NFS_CAP_ATIME
;
2873 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_METADATA
)
2874 server
->caps
|= NFS_CAP_CTIME
;
2875 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_MODIFY
)
2876 server
->caps
|= NFS_CAP_MTIME
;
2877 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
2878 if (res
.attr_bitmask
[2] & FATTR4_WORD2_SECURITY_LABEL
)
2879 server
->caps
|= NFS_CAP_SECURITY_LABEL
;
2881 memcpy(server
->attr_bitmask_nl
, res
.attr_bitmask
,
2882 sizeof(server
->attr_bitmask
));
2883 server
->attr_bitmask_nl
[2] &= ~FATTR4_WORD2_SECURITY_LABEL
;
2885 memcpy(server
->cache_consistency_bitmask
, res
.attr_bitmask
, sizeof(server
->cache_consistency_bitmask
));
2886 server
->cache_consistency_bitmask
[0] &= FATTR4_WORD0_CHANGE
|FATTR4_WORD0_SIZE
;
2887 server
->cache_consistency_bitmask
[1] &= FATTR4_WORD1_TIME_METADATA
|FATTR4_WORD1_TIME_MODIFY
;
2888 server
->cache_consistency_bitmask
[2] = 0;
2889 server
->acl_bitmask
= res
.acl_bitmask
;
2890 server
->fh_expire_type
= res
.fh_expire_type
;
2896 int nfs4_server_capabilities(struct nfs_server
*server
, struct nfs_fh
*fhandle
)
2898 struct nfs4_exception exception
= { };
2901 err
= nfs4_handle_exception(server
,
2902 _nfs4_server_capabilities(server
, fhandle
),
2904 } while (exception
.retry
);
2908 static int _nfs4_lookup_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2909 struct nfs_fsinfo
*info
)
2912 struct nfs4_lookup_root_arg args
= {
2915 struct nfs4_lookup_res res
= {
2917 .fattr
= info
->fattr
,
2920 struct rpc_message msg
= {
2921 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOOKUP_ROOT
],
2926 bitmask
[0] = nfs4_fattr_bitmap
[0];
2927 bitmask
[1] = nfs4_fattr_bitmap
[1];
2929 * Process the label in the upcoming getfattr
2931 bitmask
[2] = nfs4_fattr_bitmap
[2] & ~FATTR4_WORD2_SECURITY_LABEL
;
2933 nfs_fattr_init(info
->fattr
);
2934 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2937 static int nfs4_lookup_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2938 struct nfs_fsinfo
*info
)
2940 struct nfs4_exception exception
= { };
2943 err
= _nfs4_lookup_root(server
, fhandle
, info
);
2944 trace_nfs4_lookup_root(server
, fhandle
, info
->fattr
, err
);
2947 case -NFS4ERR_WRONGSEC
:
2950 err
= nfs4_handle_exception(server
, err
, &exception
);
2952 } while (exception
.retry
);
2957 static int nfs4_lookup_root_sec(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2958 struct nfs_fsinfo
*info
, rpc_authflavor_t flavor
)
2960 struct rpc_auth_create_args auth_args
= {
2961 .pseudoflavor
= flavor
,
2963 struct rpc_auth
*auth
;
2966 auth
= rpcauth_create(&auth_args
, server
->client
);
2971 ret
= nfs4_lookup_root(server
, fhandle
, info
);
2977 * Retry pseudoroot lookup with various security flavors. We do this when:
2979 * NFSv4.0: the PUTROOTFH operation returns NFS4ERR_WRONGSEC
2980 * NFSv4.1: the server does not support the SECINFO_NO_NAME operation
2982 * Returns zero on success, or a negative NFS4ERR value, or a
2983 * negative errno value.
2985 static int nfs4_find_root_sec(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2986 struct nfs_fsinfo
*info
)
2988 /* Per 3530bis 15.33.5 */
2989 static const rpc_authflavor_t flav_array
[] = {
2993 RPC_AUTH_UNIX
, /* courtesy */
2996 int status
= -EPERM
;
2999 if (server
->auth_info
.flavor_len
> 0) {
3000 /* try each flavor specified by user */
3001 for (i
= 0; i
< server
->auth_info
.flavor_len
; i
++) {
3002 status
= nfs4_lookup_root_sec(server
, fhandle
, info
,
3003 server
->auth_info
.flavors
[i
]);
3004 if (status
== -NFS4ERR_WRONGSEC
|| status
== -EACCES
)
3009 /* no flavors specified by user, try default list */
3010 for (i
= 0; i
< ARRAY_SIZE(flav_array
); i
++) {
3011 status
= nfs4_lookup_root_sec(server
, fhandle
, info
,
3013 if (status
== -NFS4ERR_WRONGSEC
|| status
== -EACCES
)
3020 * -EACCESS could mean that the user doesn't have correct permissions
3021 * to access the mount. It could also mean that we tried to mount
3022 * with a gss auth flavor, but rpc.gssd isn't running. Either way,
3023 * existing mount programs don't handle -EACCES very well so it should
3024 * be mapped to -EPERM instead.
3026 if (status
== -EACCES
)
3031 static int nfs4_do_find_root_sec(struct nfs_server
*server
,
3032 struct nfs_fh
*fhandle
, struct nfs_fsinfo
*info
)
3034 int mv
= server
->nfs_client
->cl_minorversion
;
3035 return nfs_v4_minor_ops
[mv
]->find_root_sec(server
, fhandle
, info
);
3039 * nfs4_proc_get_rootfh - get file handle for server's pseudoroot
3040 * @server: initialized nfs_server handle
3041 * @fhandle: we fill in the pseudo-fs root file handle
3042 * @info: we fill in an FSINFO struct
3043 * @auth_probe: probe the auth flavours
3045 * Returns zero on success, or a negative errno.
3047 int nfs4_proc_get_rootfh(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3048 struct nfs_fsinfo
*info
,
3053 switch (auth_probe
) {
3055 status
= nfs4_lookup_root(server
, fhandle
, info
);
3056 if (status
!= -NFS4ERR_WRONGSEC
)
3059 status
= nfs4_do_find_root_sec(server
, fhandle
, info
);
3063 status
= nfs4_server_capabilities(server
, fhandle
);
3065 status
= nfs4_do_fsinfo(server
, fhandle
, info
);
3067 return nfs4_map_errors(status
);
3070 static int nfs4_proc_get_root(struct nfs_server
*server
, struct nfs_fh
*mntfh
,
3071 struct nfs_fsinfo
*info
)
3074 struct nfs_fattr
*fattr
= info
->fattr
;
3075 struct nfs4_label
*label
= NULL
;
3077 error
= nfs4_server_capabilities(server
, mntfh
);
3079 dprintk("nfs4_get_root: getcaps error = %d\n", -error
);
3083 label
= nfs4_label_alloc(server
, GFP_KERNEL
);
3085 return PTR_ERR(label
);
3087 error
= nfs4_proc_getattr(server
, mntfh
, fattr
, label
);
3089 dprintk("nfs4_get_root: getattr error = %d\n", -error
);
3090 goto err_free_label
;
3093 if (fattr
->valid
& NFS_ATTR_FATTR_FSID
&&
3094 !nfs_fsid_equal(&server
->fsid
, &fattr
->fsid
))
3095 memcpy(&server
->fsid
, &fattr
->fsid
, sizeof(server
->fsid
));
3098 nfs4_label_free(label
);
3104 * Get locations and (maybe) other attributes of a referral.
3105 * Note that we'll actually follow the referral later when
3106 * we detect fsid mismatch in inode revalidation
3108 static int nfs4_get_referral(struct rpc_clnt
*client
, struct inode
*dir
,
3109 const struct qstr
*name
, struct nfs_fattr
*fattr
,
3110 struct nfs_fh
*fhandle
)
3112 int status
= -ENOMEM
;
3113 struct page
*page
= NULL
;
3114 struct nfs4_fs_locations
*locations
= NULL
;
3116 page
= alloc_page(GFP_KERNEL
);
3119 locations
= kmalloc(sizeof(struct nfs4_fs_locations
), GFP_KERNEL
);
3120 if (locations
== NULL
)
3123 status
= nfs4_proc_fs_locations(client
, dir
, name
, locations
, page
);
3128 * If the fsid didn't change, this is a migration event, not a
3129 * referral. Cause us to drop into the exception handler, which
3130 * will kick off migration recovery.
3132 if (nfs_fsid_equal(&NFS_SERVER(dir
)->fsid
, &locations
->fattr
.fsid
)) {
3133 dprintk("%s: server did not return a different fsid for"
3134 " a referral at %s\n", __func__
, name
->name
);
3135 status
= -NFS4ERR_MOVED
;
3138 /* Fixup attributes for the nfs_lookup() call to nfs_fhget() */
3139 nfs_fixup_referral_attributes(&locations
->fattr
);
3141 /* replace the lookup nfs_fattr with the locations nfs_fattr */
3142 memcpy(fattr
, &locations
->fattr
, sizeof(struct nfs_fattr
));
3143 memset(fhandle
, 0, sizeof(struct nfs_fh
));
3151 static int _nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3152 struct nfs_fattr
*fattr
, struct nfs4_label
*label
)
3154 struct nfs4_getattr_arg args
= {
3156 .bitmask
= server
->attr_bitmask
,
3158 struct nfs4_getattr_res res
= {
3163 struct rpc_message msg
= {
3164 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETATTR
],
3169 args
.bitmask
= nfs4_bitmask(server
, label
);
3171 nfs_fattr_init(fattr
);
3172 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3175 static int nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3176 struct nfs_fattr
*fattr
, struct nfs4_label
*label
)
3178 struct nfs4_exception exception
= { };
3181 err
= _nfs4_proc_getattr(server
, fhandle
, fattr
, label
);
3182 trace_nfs4_getattr(server
, fhandle
, fattr
, err
);
3183 err
= nfs4_handle_exception(server
, err
,
3185 } while (exception
.retry
);
3190 * The file is not closed if it is opened due to the a request to change
3191 * the size of the file. The open call will not be needed once the
3192 * VFS layer lookup-intents are implemented.
3194 * Close is called when the inode is destroyed.
3195 * If we haven't opened the file for O_WRONLY, we
3196 * need to in the size_change case to obtain a stateid.
3199 * Because OPEN is always done by name in nfsv4, it is
3200 * possible that we opened a different file by the same
3201 * name. We can recognize this race condition, but we
3202 * can't do anything about it besides returning an error.
3204 * This will be fixed with VFS changes (lookup-intent).
3207 nfs4_proc_setattr(struct dentry
*dentry
, struct nfs_fattr
*fattr
,
3208 struct iattr
*sattr
)
3210 struct inode
*inode
= dentry
->d_inode
;
3211 struct rpc_cred
*cred
= NULL
;
3212 struct nfs4_state
*state
= NULL
;
3213 struct nfs4_label
*label
= NULL
;
3216 if (pnfs_ld_layoutret_on_setattr(inode
))
3217 pnfs_commit_and_return_layout(inode
);
3219 nfs_fattr_init(fattr
);
3221 /* Deal with open(O_TRUNC) */
3222 if (sattr
->ia_valid
& ATTR_OPEN
)
3223 sattr
->ia_valid
&= ~(ATTR_MTIME
|ATTR_CTIME
);
3225 /* Optimization: if the end result is no change, don't RPC */
3226 if ((sattr
->ia_valid
& ~(ATTR_FILE
|ATTR_OPEN
)) == 0)
3229 /* Search for an existing open(O_WRITE) file */
3230 if (sattr
->ia_valid
& ATTR_FILE
) {
3231 struct nfs_open_context
*ctx
;
3233 ctx
= nfs_file_open_context(sattr
->ia_file
);
3240 label
= nfs4_label_alloc(NFS_SERVER(inode
), GFP_KERNEL
);
3242 return PTR_ERR(label
);
3244 status
= nfs4_do_setattr(inode
, cred
, fattr
, sattr
, state
, NULL
, label
);
3246 nfs_setattr_update_inode(inode
, sattr
);
3247 nfs_setsecurity(inode
, fattr
, label
);
3249 nfs4_label_free(label
);
3253 static int _nfs4_proc_lookup(struct rpc_clnt
*clnt
, struct inode
*dir
,
3254 const struct qstr
*name
, struct nfs_fh
*fhandle
,
3255 struct nfs_fattr
*fattr
, struct nfs4_label
*label
)
3257 struct nfs_server
*server
= NFS_SERVER(dir
);
3259 struct nfs4_lookup_arg args
= {
3260 .bitmask
= server
->attr_bitmask
,
3261 .dir_fh
= NFS_FH(dir
),
3264 struct nfs4_lookup_res res
= {
3270 struct rpc_message msg
= {
3271 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOOKUP
],
3276 args
.bitmask
= nfs4_bitmask(server
, label
);
3278 nfs_fattr_init(fattr
);
3280 dprintk("NFS call lookup %s\n", name
->name
);
3281 status
= nfs4_call_sync(clnt
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3282 dprintk("NFS reply lookup: %d\n", status
);
3286 static void nfs_fixup_secinfo_attributes(struct nfs_fattr
*fattr
)
3288 fattr
->valid
|= NFS_ATTR_FATTR_TYPE
| NFS_ATTR_FATTR_MODE
|
3289 NFS_ATTR_FATTR_NLINK
| NFS_ATTR_FATTR_MOUNTPOINT
;
3290 fattr
->mode
= S_IFDIR
| S_IRUGO
| S_IXUGO
;
3294 static int nfs4_proc_lookup_common(struct rpc_clnt
**clnt
, struct inode
*dir
,
3295 struct qstr
*name
, struct nfs_fh
*fhandle
,
3296 struct nfs_fattr
*fattr
, struct nfs4_label
*label
)
3298 struct nfs4_exception exception
= { };
3299 struct rpc_clnt
*client
= *clnt
;
3302 err
= _nfs4_proc_lookup(client
, dir
, name
, fhandle
, fattr
, label
);
3303 trace_nfs4_lookup(dir
, name
, err
);
3305 case -NFS4ERR_BADNAME
:
3308 case -NFS4ERR_MOVED
:
3309 err
= nfs4_get_referral(client
, dir
, name
, fattr
, fhandle
);
3311 case -NFS4ERR_WRONGSEC
:
3313 if (client
!= *clnt
)
3315 client
= nfs4_negotiate_security(client
, dir
, name
);
3317 return PTR_ERR(client
);
3319 exception
.retry
= 1;
3322 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
, &exception
);
3324 } while (exception
.retry
);
3329 else if (client
!= *clnt
)
3330 rpc_shutdown_client(client
);
3335 static int nfs4_proc_lookup(struct inode
*dir
, struct qstr
*name
,
3336 struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
,
3337 struct nfs4_label
*label
)
3340 struct rpc_clnt
*client
= NFS_CLIENT(dir
);
3342 status
= nfs4_proc_lookup_common(&client
, dir
, name
, fhandle
, fattr
, label
);
3343 if (client
!= NFS_CLIENT(dir
)) {
3344 rpc_shutdown_client(client
);
3345 nfs_fixup_secinfo_attributes(fattr
);
3351 nfs4_proc_lookup_mountpoint(struct inode
*dir
, struct qstr
*name
,
3352 struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
3354 struct rpc_clnt
*client
= NFS_CLIENT(dir
);
3357 status
= nfs4_proc_lookup_common(&client
, dir
, name
, fhandle
, fattr
, NULL
);
3359 return ERR_PTR(status
);
3360 return (client
== NFS_CLIENT(dir
)) ? rpc_clone_client(client
) : client
;
3363 static int _nfs4_proc_access(struct inode
*inode
, struct nfs_access_entry
*entry
)
3365 struct nfs_server
*server
= NFS_SERVER(inode
);
3366 struct nfs4_accessargs args
= {
3367 .fh
= NFS_FH(inode
),
3368 .bitmask
= server
->cache_consistency_bitmask
,
3370 struct nfs4_accessres res
= {
3373 struct rpc_message msg
= {
3374 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_ACCESS
],
3377 .rpc_cred
= entry
->cred
,
3379 int mode
= entry
->mask
;
3383 * Determine which access bits we want to ask for...
3385 if (mode
& MAY_READ
)
3386 args
.access
|= NFS4_ACCESS_READ
;
3387 if (S_ISDIR(inode
->i_mode
)) {
3388 if (mode
& MAY_WRITE
)
3389 args
.access
|= NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
| NFS4_ACCESS_DELETE
;
3390 if (mode
& MAY_EXEC
)
3391 args
.access
|= NFS4_ACCESS_LOOKUP
;
3393 if (mode
& MAY_WRITE
)
3394 args
.access
|= NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
;
3395 if (mode
& MAY_EXEC
)
3396 args
.access
|= NFS4_ACCESS_EXECUTE
;
3399 res
.fattr
= nfs_alloc_fattr();
3400 if (res
.fattr
== NULL
)
3403 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3405 nfs_access_set_mask(entry
, res
.access
);
3406 nfs_refresh_inode(inode
, res
.fattr
);
3408 nfs_free_fattr(res
.fattr
);
3412 static int nfs4_proc_access(struct inode
*inode
, struct nfs_access_entry
*entry
)
3414 struct nfs4_exception exception
= { };
3417 err
= _nfs4_proc_access(inode
, entry
);
3418 trace_nfs4_access(inode
, err
);
3419 err
= nfs4_handle_exception(NFS_SERVER(inode
), err
,
3421 } while (exception
.retry
);
3426 * TODO: For the time being, we don't try to get any attributes
3427 * along with any of the zero-copy operations READ, READDIR,
3430 * In the case of the first three, we want to put the GETATTR
3431 * after the read-type operation -- this is because it is hard
3432 * to predict the length of a GETATTR response in v4, and thus
3433 * align the READ data correctly. This means that the GETATTR
3434 * may end up partially falling into the page cache, and we should
3435 * shift it into the 'tail' of the xdr_buf before processing.
3436 * To do this efficiently, we need to know the total length
3437 * of data received, which doesn't seem to be available outside
3440 * In the case of WRITE, we also want to put the GETATTR after
3441 * the operation -- in this case because we want to make sure
3442 * we get the post-operation mtime and size.
3444 * Both of these changes to the XDR layer would in fact be quite
3445 * minor, but I decided to leave them for a subsequent patch.
3447 static int _nfs4_proc_readlink(struct inode
*inode
, struct page
*page
,
3448 unsigned int pgbase
, unsigned int pglen
)
3450 struct nfs4_readlink args
= {
3451 .fh
= NFS_FH(inode
),
3456 struct nfs4_readlink_res res
;
3457 struct rpc_message msg
= {
3458 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READLINK
],
3463 return nfs4_call_sync(NFS_SERVER(inode
)->client
, NFS_SERVER(inode
), &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3466 static int nfs4_proc_readlink(struct inode
*inode
, struct page
*page
,
3467 unsigned int pgbase
, unsigned int pglen
)
3469 struct nfs4_exception exception
= { };
3472 err
= _nfs4_proc_readlink(inode
, page
, pgbase
, pglen
);
3473 trace_nfs4_readlink(inode
, err
);
3474 err
= nfs4_handle_exception(NFS_SERVER(inode
), err
,
3476 } while (exception
.retry
);
3481 * This is just for mknod. open(O_CREAT) will always do ->open_context().
3484 nfs4_proc_create(struct inode
*dir
, struct dentry
*dentry
, struct iattr
*sattr
,
3487 struct nfs4_label l
, *ilabel
= NULL
;
3488 struct nfs_open_context
*ctx
;
3489 struct nfs4_state
*state
;
3493 ctx
= alloc_nfs_open_context(dentry
, FMODE_READ
);
3495 return PTR_ERR(ctx
);
3497 ilabel
= nfs4_label_init_security(dir
, dentry
, sattr
, &l
);
3499 sattr
->ia_mode
&= ~current_umask();
3500 state
= nfs4_do_open(dir
, ctx
, flags
, sattr
, ilabel
, &opened
);
3501 if (IS_ERR(state
)) {
3502 status
= PTR_ERR(state
);
3506 nfs4_label_release_security(ilabel
);
3507 put_nfs_open_context(ctx
);
3511 static int _nfs4_proc_remove(struct inode
*dir
, struct qstr
*name
)
3513 struct nfs_server
*server
= NFS_SERVER(dir
);
3514 struct nfs_removeargs args
= {
3518 struct nfs_removeres res
= {
3521 struct rpc_message msg
= {
3522 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_REMOVE
],
3528 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 1);
3530 update_changeattr(dir
, &res
.cinfo
);
3534 static int nfs4_proc_remove(struct inode
*dir
, struct qstr
*name
)
3536 struct nfs4_exception exception
= { };
3539 err
= _nfs4_proc_remove(dir
, name
);
3540 trace_nfs4_remove(dir
, name
, err
);
3541 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
3543 } while (exception
.retry
);
3547 static void nfs4_proc_unlink_setup(struct rpc_message
*msg
, struct inode
*dir
)
3549 struct nfs_server
*server
= NFS_SERVER(dir
);
3550 struct nfs_removeargs
*args
= msg
->rpc_argp
;
3551 struct nfs_removeres
*res
= msg
->rpc_resp
;
3553 res
->server
= server
;
3554 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_REMOVE
];
3555 nfs4_init_sequence(&args
->seq_args
, &res
->seq_res
, 1);
3557 nfs_fattr_init(res
->dir_attr
);
3560 static void nfs4_proc_unlink_rpc_prepare(struct rpc_task
*task
, struct nfs_unlinkdata
*data
)
3562 nfs4_setup_sequence(NFS_SERVER(data
->dir
),
3563 &data
->args
.seq_args
,
3568 static int nfs4_proc_unlink_done(struct rpc_task
*task
, struct inode
*dir
)
3570 struct nfs_unlinkdata
*data
= task
->tk_calldata
;
3571 struct nfs_removeres
*res
= &data
->res
;
3573 if (!nfs4_sequence_done(task
, &res
->seq_res
))
3575 if (nfs4_async_handle_error(task
, res
->server
, NULL
) == -EAGAIN
)
3577 update_changeattr(dir
, &res
->cinfo
);
3581 static void nfs4_proc_rename_setup(struct rpc_message
*msg
, struct inode
*dir
)
3583 struct nfs_server
*server
= NFS_SERVER(dir
);
3584 struct nfs_renameargs
*arg
= msg
->rpc_argp
;
3585 struct nfs_renameres
*res
= msg
->rpc_resp
;
3587 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENAME
];
3588 res
->server
= server
;
3589 nfs4_init_sequence(&arg
->seq_args
, &res
->seq_res
, 1);
3592 static void nfs4_proc_rename_rpc_prepare(struct rpc_task
*task
, struct nfs_renamedata
*data
)
3594 nfs4_setup_sequence(NFS_SERVER(data
->old_dir
),
3595 &data
->args
.seq_args
,
3600 static int nfs4_proc_rename_done(struct rpc_task
*task
, struct inode
*old_dir
,
3601 struct inode
*new_dir
)
3603 struct nfs_renamedata
*data
= task
->tk_calldata
;
3604 struct nfs_renameres
*res
= &data
->res
;
3606 if (!nfs4_sequence_done(task
, &res
->seq_res
))
3608 if (nfs4_async_handle_error(task
, res
->server
, NULL
) == -EAGAIN
)
3611 update_changeattr(old_dir
, &res
->old_cinfo
);
3612 update_changeattr(new_dir
, &res
->new_cinfo
);
3616 static int _nfs4_proc_link(struct inode
*inode
, struct inode
*dir
, struct qstr
*name
)
3618 struct nfs_server
*server
= NFS_SERVER(inode
);
3619 struct nfs4_link_arg arg
= {
3620 .fh
= NFS_FH(inode
),
3621 .dir_fh
= NFS_FH(dir
),
3623 .bitmask
= server
->attr_bitmask
,
3625 struct nfs4_link_res res
= {
3629 struct rpc_message msg
= {
3630 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LINK
],
3634 int status
= -ENOMEM
;
3636 res
.fattr
= nfs_alloc_fattr();
3637 if (res
.fattr
== NULL
)
3640 res
.label
= nfs4_label_alloc(server
, GFP_KERNEL
);
3641 if (IS_ERR(res
.label
)) {
3642 status
= PTR_ERR(res
.label
);
3645 arg
.bitmask
= nfs4_bitmask(server
, res
.label
);
3647 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
3649 update_changeattr(dir
, &res
.cinfo
);
3650 status
= nfs_post_op_update_inode(inode
, res
.fattr
);
3652 nfs_setsecurity(inode
, res
.fattr
, res
.label
);
3656 nfs4_label_free(res
.label
);
3659 nfs_free_fattr(res
.fattr
);
3663 static int nfs4_proc_link(struct inode
*inode
, struct inode
*dir
, struct qstr
*name
)
3665 struct nfs4_exception exception
= { };
3668 err
= nfs4_handle_exception(NFS_SERVER(inode
),
3669 _nfs4_proc_link(inode
, dir
, name
),
3671 } while (exception
.retry
);
3675 struct nfs4_createdata
{
3676 struct rpc_message msg
;
3677 struct nfs4_create_arg arg
;
3678 struct nfs4_create_res res
;
3680 struct nfs_fattr fattr
;
3681 struct nfs4_label
*label
;
3684 static struct nfs4_createdata
*nfs4_alloc_createdata(struct inode
*dir
,
3685 struct qstr
*name
, struct iattr
*sattr
, u32 ftype
)
3687 struct nfs4_createdata
*data
;
3689 data
= kzalloc(sizeof(*data
), GFP_KERNEL
);
3691 struct nfs_server
*server
= NFS_SERVER(dir
);
3693 data
->label
= nfs4_label_alloc(server
, GFP_KERNEL
);
3694 if (IS_ERR(data
->label
))
3697 data
->msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CREATE
];
3698 data
->msg
.rpc_argp
= &data
->arg
;
3699 data
->msg
.rpc_resp
= &data
->res
;
3700 data
->arg
.dir_fh
= NFS_FH(dir
);
3701 data
->arg
.server
= server
;
3702 data
->arg
.name
= name
;
3703 data
->arg
.attrs
= sattr
;
3704 data
->arg
.ftype
= ftype
;
3705 data
->arg
.bitmask
= nfs4_bitmask(server
, data
->label
);
3706 data
->res
.server
= server
;
3707 data
->res
.fh
= &data
->fh
;
3708 data
->res
.fattr
= &data
->fattr
;
3709 data
->res
.label
= data
->label
;
3710 nfs_fattr_init(data
->res
.fattr
);
3718 static int nfs4_do_create(struct inode
*dir
, struct dentry
*dentry
, struct nfs4_createdata
*data
)
3720 int status
= nfs4_call_sync(NFS_SERVER(dir
)->client
, NFS_SERVER(dir
), &data
->msg
,
3721 &data
->arg
.seq_args
, &data
->res
.seq_res
, 1);
3723 update_changeattr(dir
, &data
->res
.dir_cinfo
);
3724 status
= nfs_instantiate(dentry
, data
->res
.fh
, data
->res
.fattr
, data
->res
.label
);
3729 static void nfs4_free_createdata(struct nfs4_createdata
*data
)
3731 nfs4_label_free(data
->label
);
3735 static int _nfs4_proc_symlink(struct inode
*dir
, struct dentry
*dentry
,
3736 struct page
*page
, unsigned int len
, struct iattr
*sattr
,
3737 struct nfs4_label
*label
)
3739 struct nfs4_createdata
*data
;
3740 int status
= -ENAMETOOLONG
;
3742 if (len
> NFS4_MAXPATHLEN
)
3746 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4LNK
);
3750 data
->msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SYMLINK
];
3751 data
->arg
.u
.symlink
.pages
= &page
;
3752 data
->arg
.u
.symlink
.len
= len
;
3753 data
->arg
.label
= label
;
3755 status
= nfs4_do_create(dir
, dentry
, data
);
3757 nfs4_free_createdata(data
);
3762 static int nfs4_proc_symlink(struct inode
*dir
, struct dentry
*dentry
,
3763 struct page
*page
, unsigned int len
, struct iattr
*sattr
)
3765 struct nfs4_exception exception
= { };
3766 struct nfs4_label l
, *label
= NULL
;
3769 label
= nfs4_label_init_security(dir
, dentry
, sattr
, &l
);
3772 err
= _nfs4_proc_symlink(dir
, dentry
, page
, len
, sattr
, label
);
3773 trace_nfs4_symlink(dir
, &dentry
->d_name
, err
);
3774 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
3776 } while (exception
.retry
);
3778 nfs4_label_release_security(label
);
3782 static int _nfs4_proc_mkdir(struct inode
*dir
, struct dentry
*dentry
,
3783 struct iattr
*sattr
, struct nfs4_label
*label
)
3785 struct nfs4_createdata
*data
;
3786 int status
= -ENOMEM
;
3788 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4DIR
);
3792 data
->arg
.label
= label
;
3793 status
= nfs4_do_create(dir
, dentry
, data
);
3795 nfs4_free_createdata(data
);
3800 static int nfs4_proc_mkdir(struct inode
*dir
, struct dentry
*dentry
,
3801 struct iattr
*sattr
)
3803 struct nfs4_exception exception
= { };
3804 struct nfs4_label l
, *label
= NULL
;
3807 label
= nfs4_label_init_security(dir
, dentry
, sattr
, &l
);
3809 sattr
->ia_mode
&= ~current_umask();
3811 err
= _nfs4_proc_mkdir(dir
, dentry
, sattr
, label
);
3812 trace_nfs4_mkdir(dir
, &dentry
->d_name
, err
);
3813 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
3815 } while (exception
.retry
);
3816 nfs4_label_release_security(label
);
3821 static int _nfs4_proc_readdir(struct dentry
*dentry
, struct rpc_cred
*cred
,
3822 u64 cookie
, struct page
**pages
, unsigned int count
, int plus
)
3824 struct inode
*dir
= dentry
->d_inode
;
3825 struct nfs4_readdir_arg args
= {
3830 .bitmask
= NFS_SERVER(dentry
->d_inode
)->attr_bitmask
,
3833 struct nfs4_readdir_res res
;
3834 struct rpc_message msg
= {
3835 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READDIR
],
3842 dprintk("%s: dentry = %pd2, cookie = %Lu\n", __func__
,
3844 (unsigned long long)cookie
);
3845 nfs4_setup_readdir(cookie
, NFS_I(dir
)->cookieverf
, dentry
, &args
);
3846 res
.pgbase
= args
.pgbase
;
3847 status
= nfs4_call_sync(NFS_SERVER(dir
)->client
, NFS_SERVER(dir
), &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3849 memcpy(NFS_I(dir
)->cookieverf
, res
.verifier
.data
, NFS4_VERIFIER_SIZE
);
3850 status
+= args
.pgbase
;
3853 nfs_invalidate_atime(dir
);
3855 dprintk("%s: returns %d\n", __func__
, status
);
3859 static int nfs4_proc_readdir(struct dentry
*dentry
, struct rpc_cred
*cred
,
3860 u64 cookie
, struct page
**pages
, unsigned int count
, int plus
)
3862 struct nfs4_exception exception
= { };
3865 err
= _nfs4_proc_readdir(dentry
, cred
, cookie
,
3866 pages
, count
, plus
);
3867 trace_nfs4_readdir(dentry
->d_inode
, err
);
3868 err
= nfs4_handle_exception(NFS_SERVER(dentry
->d_inode
), err
,
3870 } while (exception
.retry
);
3874 static int _nfs4_proc_mknod(struct inode
*dir
, struct dentry
*dentry
,
3875 struct iattr
*sattr
, struct nfs4_label
*label
, dev_t rdev
)
3877 struct nfs4_createdata
*data
;
3878 int mode
= sattr
->ia_mode
;
3879 int status
= -ENOMEM
;
3881 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4SOCK
);
3886 data
->arg
.ftype
= NF4FIFO
;
3887 else if (S_ISBLK(mode
)) {
3888 data
->arg
.ftype
= NF4BLK
;
3889 data
->arg
.u
.device
.specdata1
= MAJOR(rdev
);
3890 data
->arg
.u
.device
.specdata2
= MINOR(rdev
);
3892 else if (S_ISCHR(mode
)) {
3893 data
->arg
.ftype
= NF4CHR
;
3894 data
->arg
.u
.device
.specdata1
= MAJOR(rdev
);
3895 data
->arg
.u
.device
.specdata2
= MINOR(rdev
);
3896 } else if (!S_ISSOCK(mode
)) {
3901 data
->arg
.label
= label
;
3902 status
= nfs4_do_create(dir
, dentry
, data
);
3904 nfs4_free_createdata(data
);
3909 static int nfs4_proc_mknod(struct inode
*dir
, struct dentry
*dentry
,
3910 struct iattr
*sattr
, dev_t rdev
)
3912 struct nfs4_exception exception
= { };
3913 struct nfs4_label l
, *label
= NULL
;
3916 label
= nfs4_label_init_security(dir
, dentry
, sattr
, &l
);
3918 sattr
->ia_mode
&= ~current_umask();
3920 err
= _nfs4_proc_mknod(dir
, dentry
, sattr
, label
, rdev
);
3921 trace_nfs4_mknod(dir
, &dentry
->d_name
, err
);
3922 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
3924 } while (exception
.retry
);
3926 nfs4_label_release_security(label
);
3931 static int _nfs4_proc_statfs(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3932 struct nfs_fsstat
*fsstat
)
3934 struct nfs4_statfs_arg args
= {
3936 .bitmask
= server
->attr_bitmask
,
3938 struct nfs4_statfs_res res
= {
3941 struct rpc_message msg
= {
3942 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_STATFS
],
3947 nfs_fattr_init(fsstat
->fattr
);
3948 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3951 static int nfs4_proc_statfs(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsstat
*fsstat
)
3953 struct nfs4_exception exception
= { };
3956 err
= nfs4_handle_exception(server
,
3957 _nfs4_proc_statfs(server
, fhandle
, fsstat
),
3959 } while (exception
.retry
);
3963 static int _nfs4_do_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3964 struct nfs_fsinfo
*fsinfo
)
3966 struct nfs4_fsinfo_arg args
= {
3968 .bitmask
= server
->attr_bitmask
,
3970 struct nfs4_fsinfo_res res
= {
3973 struct rpc_message msg
= {
3974 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FSINFO
],
3979 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3982 static int nfs4_do_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsinfo
*fsinfo
)
3984 struct nfs4_exception exception
= { };
3985 unsigned long now
= jiffies
;
3989 err
= _nfs4_do_fsinfo(server
, fhandle
, fsinfo
);
3990 trace_nfs4_fsinfo(server
, fhandle
, fsinfo
->fattr
, err
);
3992 struct nfs_client
*clp
= server
->nfs_client
;
3994 spin_lock(&clp
->cl_lock
);
3995 clp
->cl_lease_time
= fsinfo
->lease_time
* HZ
;
3996 clp
->cl_last_renewal
= now
;
3997 spin_unlock(&clp
->cl_lock
);
4000 err
= nfs4_handle_exception(server
, err
, &exception
);
4001 } while (exception
.retry
);
4005 static int nfs4_proc_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsinfo
*fsinfo
)
4009 nfs_fattr_init(fsinfo
->fattr
);
4010 error
= nfs4_do_fsinfo(server
, fhandle
, fsinfo
);
4012 /* block layout checks this! */
4013 server
->pnfs_blksize
= fsinfo
->blksize
;
4014 set_pnfs_layoutdriver(server
, fhandle
, fsinfo
->layouttype
);
4020 static int _nfs4_proc_pathconf(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
4021 struct nfs_pathconf
*pathconf
)
4023 struct nfs4_pathconf_arg args
= {
4025 .bitmask
= server
->attr_bitmask
,
4027 struct nfs4_pathconf_res res
= {
4028 .pathconf
= pathconf
,
4030 struct rpc_message msg
= {
4031 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_PATHCONF
],
4036 /* None of the pathconf attributes are mandatory to implement */
4037 if ((args
.bitmask
[0] & nfs4_pathconf_bitmap
[0]) == 0) {
4038 memset(pathconf
, 0, sizeof(*pathconf
));
4042 nfs_fattr_init(pathconf
->fattr
);
4043 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
4046 static int nfs4_proc_pathconf(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
4047 struct nfs_pathconf
*pathconf
)
4049 struct nfs4_exception exception
= { };
4053 err
= nfs4_handle_exception(server
,
4054 _nfs4_proc_pathconf(server
, fhandle
, pathconf
),
4056 } while (exception
.retry
);
4060 int nfs4_set_rw_stateid(nfs4_stateid
*stateid
,
4061 const struct nfs_open_context
*ctx
,
4062 const struct nfs_lock_context
*l_ctx
,
4065 const struct nfs_lockowner
*lockowner
= NULL
;
4068 lockowner
= &l_ctx
->lockowner
;
4069 return nfs4_select_rw_stateid(stateid
, ctx
->state
, fmode
, lockowner
);
4071 EXPORT_SYMBOL_GPL(nfs4_set_rw_stateid
);
4073 static bool nfs4_stateid_is_current(nfs4_stateid
*stateid
,
4074 const struct nfs_open_context
*ctx
,
4075 const struct nfs_lock_context
*l_ctx
,
4078 nfs4_stateid current_stateid
;
4080 /* If the current stateid represents a lost lock, then exit */
4081 if (nfs4_set_rw_stateid(¤t_stateid
, ctx
, l_ctx
, fmode
) == -EIO
)
4083 return nfs4_stateid_match(stateid
, ¤t_stateid
);
4086 static bool nfs4_error_stateid_expired(int err
)
4089 case -NFS4ERR_DELEG_REVOKED
:
4090 case -NFS4ERR_ADMIN_REVOKED
:
4091 case -NFS4ERR_BAD_STATEID
:
4092 case -NFS4ERR_STALE_STATEID
:
4093 case -NFS4ERR_OLD_STATEID
:
4094 case -NFS4ERR_OPENMODE
:
4095 case -NFS4ERR_EXPIRED
:
4101 void __nfs4_read_done_cb(struct nfs_pgio_header
*hdr
)
4103 nfs_invalidate_atime(hdr
->inode
);
4106 static int nfs4_read_done_cb(struct rpc_task
*task
, struct nfs_pgio_header
*hdr
)
4108 struct nfs_server
*server
= NFS_SERVER(hdr
->inode
);
4110 trace_nfs4_read(hdr
, task
->tk_status
);
4111 if (nfs4_async_handle_error(task
, server
,
4112 hdr
->args
.context
->state
) == -EAGAIN
) {
4113 rpc_restart_call_prepare(task
);
4117 __nfs4_read_done_cb(hdr
);
4118 if (task
->tk_status
> 0)
4119 renew_lease(server
, hdr
->timestamp
);
4123 static bool nfs4_read_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_read_done(struct rpc_task
*task
, struct nfs_pgio_header
*hdr
)
4140 dprintk("--> %s\n", __func__
);
4142 if (!nfs4_sequence_done(task
, &hdr
->res
.seq_res
))
4144 if (nfs4_read_stateid_changed(task
, &hdr
->args
))
4146 return hdr
->pgio_done_cb
? hdr
->pgio_done_cb(task
, hdr
) :
4147 nfs4_read_done_cb(task
, hdr
);
4150 static void nfs4_proc_read_setup(struct nfs_pgio_header
*hdr
,
4151 struct rpc_message
*msg
)
4153 hdr
->timestamp
= jiffies
;
4154 hdr
->pgio_done_cb
= nfs4_read_done_cb
;
4155 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READ
];
4156 nfs4_init_sequence(&hdr
->args
.seq_args
, &hdr
->res
.seq_res
, 0);
4159 static int nfs4_proc_pgio_rpc_prepare(struct rpc_task
*task
,
4160 struct nfs_pgio_header
*hdr
)
4162 if (nfs4_setup_sequence(NFS_SERVER(hdr
->inode
),
4163 &hdr
->args
.seq_args
,
4167 if (nfs4_set_rw_stateid(&hdr
->args
.stateid
, hdr
->args
.context
,
4168 hdr
->args
.lock_context
,
4169 hdr
->rw_ops
->rw_mode
) == -EIO
)
4171 if (unlikely(test_bit(NFS_CONTEXT_BAD
, &hdr
->args
.context
->flags
)))
4176 static int nfs4_write_done_cb(struct rpc_task
*task
,
4177 struct nfs_pgio_header
*hdr
)
4179 struct inode
*inode
= hdr
->inode
;
4181 trace_nfs4_write(hdr
, task
->tk_status
);
4182 if (nfs4_async_handle_error(task
, NFS_SERVER(inode
),
4183 hdr
->args
.context
->state
) == -EAGAIN
) {
4184 rpc_restart_call_prepare(task
);
4187 if (task
->tk_status
>= 0) {
4188 renew_lease(NFS_SERVER(inode
), hdr
->timestamp
);
4189 nfs_post_op_update_inode_force_wcc(inode
, &hdr
->fattr
);
4194 static bool nfs4_write_stateid_changed(struct rpc_task
*task
,
4195 struct nfs_pgio_args
*args
)
4198 if (!nfs4_error_stateid_expired(task
->tk_status
) ||
4199 nfs4_stateid_is_current(&args
->stateid
,
4204 rpc_restart_call_prepare(task
);
4208 static int nfs4_write_done(struct rpc_task
*task
, struct nfs_pgio_header
*hdr
)
4210 if (!nfs4_sequence_done(task
, &hdr
->res
.seq_res
))
4212 if (nfs4_write_stateid_changed(task
, &hdr
->args
))
4214 return hdr
->pgio_done_cb
? hdr
->pgio_done_cb(task
, hdr
) :
4215 nfs4_write_done_cb(task
, hdr
);
4219 bool nfs4_write_need_cache_consistency_data(struct nfs_pgio_header
*hdr
)
4221 /* Don't request attributes for pNFS or O_DIRECT writes */
4222 if (hdr
->ds_clp
!= NULL
|| hdr
->dreq
!= NULL
)
4224 /* Otherwise, request attributes if and only if we don't hold
4227 return nfs4_have_delegation(hdr
->inode
, FMODE_READ
) == 0;
4230 static void nfs4_proc_write_setup(struct nfs_pgio_header
*hdr
,
4231 struct rpc_message
*msg
)
4233 struct nfs_server
*server
= NFS_SERVER(hdr
->inode
);
4235 if (!nfs4_write_need_cache_consistency_data(hdr
)) {
4236 hdr
->args
.bitmask
= NULL
;
4237 hdr
->res
.fattr
= NULL
;
4239 hdr
->args
.bitmask
= server
->cache_consistency_bitmask
;
4241 if (!hdr
->pgio_done_cb
)
4242 hdr
->pgio_done_cb
= nfs4_write_done_cb
;
4243 hdr
->res
.server
= server
;
4244 hdr
->timestamp
= jiffies
;
4246 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_WRITE
];
4247 nfs4_init_sequence(&hdr
->args
.seq_args
, &hdr
->res
.seq_res
, 1);
4250 static void nfs4_proc_commit_rpc_prepare(struct rpc_task
*task
, struct nfs_commit_data
*data
)
4252 nfs4_setup_sequence(NFS_SERVER(data
->inode
),
4253 &data
->args
.seq_args
,
4258 static int nfs4_commit_done_cb(struct rpc_task
*task
, struct nfs_commit_data
*data
)
4260 struct inode
*inode
= data
->inode
;
4262 trace_nfs4_commit(data
, task
->tk_status
);
4263 if (nfs4_async_handle_error(task
, NFS_SERVER(inode
), NULL
) == -EAGAIN
) {
4264 rpc_restart_call_prepare(task
);
4270 static int nfs4_commit_done(struct rpc_task
*task
, struct nfs_commit_data
*data
)
4272 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
4274 return data
->commit_done_cb(task
, data
);
4277 static void nfs4_proc_commit_setup(struct nfs_commit_data
*data
, struct rpc_message
*msg
)
4279 struct nfs_server
*server
= NFS_SERVER(data
->inode
);
4281 if (data
->commit_done_cb
== NULL
)
4282 data
->commit_done_cb
= nfs4_commit_done_cb
;
4283 data
->res
.server
= server
;
4284 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_COMMIT
];
4285 nfs4_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
4288 struct nfs4_renewdata
{
4289 struct nfs_client
*client
;
4290 unsigned long timestamp
;
4294 * nfs4_proc_async_renew(): This is not one of the nfs_rpc_ops; it is a special
4295 * standalone procedure for queueing an asynchronous RENEW.
4297 static void nfs4_renew_release(void *calldata
)
4299 struct nfs4_renewdata
*data
= calldata
;
4300 struct nfs_client
*clp
= data
->client
;
4302 if (atomic_read(&clp
->cl_count
) > 1)
4303 nfs4_schedule_state_renewal(clp
);
4304 nfs_put_client(clp
);
4308 static void nfs4_renew_done(struct rpc_task
*task
, void *calldata
)
4310 struct nfs4_renewdata
*data
= calldata
;
4311 struct nfs_client
*clp
= data
->client
;
4312 unsigned long timestamp
= data
->timestamp
;
4314 trace_nfs4_renew_async(clp
, task
->tk_status
);
4315 switch (task
->tk_status
) {
4318 case -NFS4ERR_LEASE_MOVED
:
4319 nfs4_schedule_lease_moved_recovery(clp
);
4322 /* Unless we're shutting down, schedule state recovery! */
4323 if (test_bit(NFS_CS_RENEWD
, &clp
->cl_res_state
) == 0)
4325 if (task
->tk_status
!= NFS4ERR_CB_PATH_DOWN
) {
4326 nfs4_schedule_lease_recovery(clp
);
4329 nfs4_schedule_path_down_recovery(clp
);
4331 do_renew_lease(clp
, timestamp
);
4334 static const struct rpc_call_ops nfs4_renew_ops
= {
4335 .rpc_call_done
= nfs4_renew_done
,
4336 .rpc_release
= nfs4_renew_release
,
4339 static int nfs4_proc_async_renew(struct nfs_client
*clp
, struct rpc_cred
*cred
, unsigned renew_flags
)
4341 struct rpc_message msg
= {
4342 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENEW
],
4346 struct nfs4_renewdata
*data
;
4348 if (renew_flags
== 0)
4350 if (!atomic_inc_not_zero(&clp
->cl_count
))
4352 data
= kmalloc(sizeof(*data
), GFP_NOFS
);
4356 data
->timestamp
= jiffies
;
4357 return rpc_call_async(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
,
4358 &nfs4_renew_ops
, data
);
4361 static int nfs4_proc_renew(struct nfs_client
*clp
, struct rpc_cred
*cred
)
4363 struct rpc_message msg
= {
4364 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENEW
],
4368 unsigned long now
= jiffies
;
4371 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
4374 do_renew_lease(clp
, now
);
4378 static inline int nfs4_server_supports_acls(struct nfs_server
*server
)
4380 return server
->caps
& NFS_CAP_ACLS
;
4383 /* Assuming that XATTR_SIZE_MAX is a multiple of PAGE_SIZE, and that
4384 * it's OK to put sizeof(void) * (XATTR_SIZE_MAX/PAGE_SIZE) bytes on
4387 #define NFS4ACL_MAXPAGES DIV_ROUND_UP(XATTR_SIZE_MAX, PAGE_SIZE)
4389 static int buf_to_pages_noslab(const void *buf
, size_t buflen
,
4390 struct page
**pages
, unsigned int *pgbase
)
4392 struct page
*newpage
, **spages
;
4398 len
= min_t(size_t, PAGE_SIZE
, buflen
);
4399 newpage
= alloc_page(GFP_KERNEL
);
4401 if (newpage
== NULL
)
4403 memcpy(page_address(newpage
), buf
, len
);
4408 } while (buflen
!= 0);
4414 __free_page(spages
[rc
-1]);
4418 struct nfs4_cached_acl
{
4424 static void nfs4_set_cached_acl(struct inode
*inode
, struct nfs4_cached_acl
*acl
)
4426 struct nfs_inode
*nfsi
= NFS_I(inode
);
4428 spin_lock(&inode
->i_lock
);
4429 kfree(nfsi
->nfs4_acl
);
4430 nfsi
->nfs4_acl
= acl
;
4431 spin_unlock(&inode
->i_lock
);
4434 static void nfs4_zap_acl_attr(struct inode
*inode
)
4436 nfs4_set_cached_acl(inode
, NULL
);
4439 static inline ssize_t
nfs4_read_cached_acl(struct inode
*inode
, char *buf
, size_t buflen
)
4441 struct nfs_inode
*nfsi
= NFS_I(inode
);
4442 struct nfs4_cached_acl
*acl
;
4445 spin_lock(&inode
->i_lock
);
4446 acl
= nfsi
->nfs4_acl
;
4449 if (buf
== NULL
) /* user is just asking for length */
4451 if (acl
->cached
== 0)
4453 ret
= -ERANGE
; /* see getxattr(2) man page */
4454 if (acl
->len
> buflen
)
4456 memcpy(buf
, acl
->data
, acl
->len
);
4460 spin_unlock(&inode
->i_lock
);
4464 static void nfs4_write_cached_acl(struct inode
*inode
, struct page
**pages
, size_t pgbase
, size_t acl_len
)
4466 struct nfs4_cached_acl
*acl
;
4467 size_t buflen
= sizeof(*acl
) + acl_len
;
4469 if (buflen
<= PAGE_SIZE
) {
4470 acl
= kmalloc(buflen
, GFP_KERNEL
);
4474 _copy_from_pages(acl
->data
, pages
, pgbase
, acl_len
);
4476 acl
= kmalloc(sizeof(*acl
), GFP_KERNEL
);
4483 nfs4_set_cached_acl(inode
, acl
);
4487 * The getxattr API returns the required buffer length when called with a
4488 * NULL buf. The NFSv4 acl tool then calls getxattr again after allocating
4489 * the required buf. On a NULL buf, we send a page of data to the server
4490 * guessing that the ACL request can be serviced by a page. If so, we cache
4491 * up to the page of ACL data, and the 2nd call to getxattr is serviced by
4492 * the cache. If not so, we throw away the page, and cache the required
4493 * length. The next getxattr call will then produce another round trip to
4494 * the server, this time with the input buf of the required size.
4496 static ssize_t
__nfs4_get_acl_uncached(struct inode
*inode
, void *buf
, size_t buflen
)
4498 struct page
*pages
[NFS4ACL_MAXPAGES
] = {NULL
, };
4499 struct nfs_getaclargs args
= {
4500 .fh
= NFS_FH(inode
),
4504 struct nfs_getaclres res
= {
4507 struct rpc_message msg
= {
4508 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETACL
],
4512 unsigned int npages
= DIV_ROUND_UP(buflen
, PAGE_SIZE
);
4513 int ret
= -ENOMEM
, i
;
4515 /* As long as we're doing a round trip to the server anyway,
4516 * let's be prepared for a page of acl data. */
4519 if (npages
> ARRAY_SIZE(pages
))
4522 for (i
= 0; i
< npages
; i
++) {
4523 pages
[i
] = alloc_page(GFP_KERNEL
);
4528 /* for decoding across pages */
4529 res
.acl_scratch
= alloc_page(GFP_KERNEL
);
4530 if (!res
.acl_scratch
)
4533 args
.acl_len
= npages
* PAGE_SIZE
;
4534 args
.acl_pgbase
= 0;
4536 dprintk("%s buf %p buflen %zu npages %d args.acl_len %zu\n",
4537 __func__
, buf
, buflen
, npages
, args
.acl_len
);
4538 ret
= nfs4_call_sync(NFS_SERVER(inode
)->client
, NFS_SERVER(inode
),
4539 &msg
, &args
.seq_args
, &res
.seq_res
, 0);
4543 /* Handle the case where the passed-in buffer is too short */
4544 if (res
.acl_flags
& NFS4_ACL_TRUNC
) {
4545 /* Did the user only issue a request for the acl length? */
4551 nfs4_write_cached_acl(inode
, pages
, res
.acl_data_offset
, res
.acl_len
);
4553 if (res
.acl_len
> buflen
) {
4557 _copy_from_pages(buf
, pages
, res
.acl_data_offset
, res
.acl_len
);
4562 for (i
= 0; i
< npages
; i
++)
4564 __free_page(pages
[i
]);
4565 if (res
.acl_scratch
)
4566 __free_page(res
.acl_scratch
);
4570 static ssize_t
nfs4_get_acl_uncached(struct inode
*inode
, void *buf
, size_t buflen
)
4572 struct nfs4_exception exception
= { };
4575 ret
= __nfs4_get_acl_uncached(inode
, buf
, buflen
);
4576 trace_nfs4_get_acl(inode
, ret
);
4579 ret
= nfs4_handle_exception(NFS_SERVER(inode
), ret
, &exception
);
4580 } while (exception
.retry
);
4584 static ssize_t
nfs4_proc_get_acl(struct inode
*inode
, void *buf
, size_t buflen
)
4586 struct nfs_server
*server
= NFS_SERVER(inode
);
4589 if (!nfs4_server_supports_acls(server
))
4591 ret
= nfs_revalidate_inode(server
, inode
);
4594 if (NFS_I(inode
)->cache_validity
& NFS_INO_INVALID_ACL
)
4595 nfs_zap_acl_cache(inode
);
4596 ret
= nfs4_read_cached_acl(inode
, buf
, buflen
);
4598 /* -ENOENT is returned if there is no ACL or if there is an ACL
4599 * but no cached acl data, just the acl length */
4601 return nfs4_get_acl_uncached(inode
, buf
, buflen
);
4604 static int __nfs4_proc_set_acl(struct inode
*inode
, const void *buf
, size_t buflen
)
4606 struct nfs_server
*server
= NFS_SERVER(inode
);
4607 struct page
*pages
[NFS4ACL_MAXPAGES
];
4608 struct nfs_setaclargs arg
= {
4609 .fh
= NFS_FH(inode
),
4613 struct nfs_setaclres res
;
4614 struct rpc_message msg
= {
4615 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETACL
],
4619 unsigned int npages
= DIV_ROUND_UP(buflen
, PAGE_SIZE
);
4622 if (!nfs4_server_supports_acls(server
))
4624 if (npages
> ARRAY_SIZE(pages
))
4626 i
= buf_to_pages_noslab(buf
, buflen
, arg
.acl_pages
, &arg
.acl_pgbase
);
4629 nfs4_inode_return_delegation(inode
);
4630 ret
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
4633 * Free each page after tx, so the only ref left is
4634 * held by the network stack
4637 put_page(pages
[i
-1]);
4640 * Acl update can result in inode attribute update.
4641 * so mark the attribute cache invalid.
4643 spin_lock(&inode
->i_lock
);
4644 NFS_I(inode
)->cache_validity
|= NFS_INO_INVALID_ATTR
;
4645 spin_unlock(&inode
->i_lock
);
4646 nfs_access_zap_cache(inode
);
4647 nfs_zap_acl_cache(inode
);
4651 static int nfs4_proc_set_acl(struct inode
*inode
, const void *buf
, size_t buflen
)
4653 struct nfs4_exception exception
= { };
4656 err
= __nfs4_proc_set_acl(inode
, buf
, buflen
);
4657 trace_nfs4_set_acl(inode
, err
);
4658 err
= nfs4_handle_exception(NFS_SERVER(inode
), err
,
4660 } while (exception
.retry
);
4664 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
4665 static int _nfs4_get_security_label(struct inode
*inode
, void *buf
,
4668 struct nfs_server
*server
= NFS_SERVER(inode
);
4669 struct nfs_fattr fattr
;
4670 struct nfs4_label label
= {0, 0, buflen
, buf
};
4672 u32 bitmask
[3] = { 0, 0, FATTR4_WORD2_SECURITY_LABEL
};
4673 struct nfs4_getattr_arg arg
= {
4674 .fh
= NFS_FH(inode
),
4677 struct nfs4_getattr_res res
= {
4682 struct rpc_message msg
= {
4683 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETATTR
],
4689 nfs_fattr_init(&fattr
);
4691 ret
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 0);
4694 if (!(fattr
.valid
& NFS_ATTR_FATTR_V4_SECURITY_LABEL
))
4696 if (buflen
< label
.len
)
4701 static int nfs4_get_security_label(struct inode
*inode
, void *buf
,
4704 struct nfs4_exception exception
= { };
4707 if (!nfs_server_capable(inode
, NFS_CAP_SECURITY_LABEL
))
4711 err
= _nfs4_get_security_label(inode
, buf
, buflen
);
4712 trace_nfs4_get_security_label(inode
, err
);
4713 err
= nfs4_handle_exception(NFS_SERVER(inode
), err
,
4715 } while (exception
.retry
);
4719 static int _nfs4_do_set_security_label(struct inode
*inode
,
4720 struct nfs4_label
*ilabel
,
4721 struct nfs_fattr
*fattr
,
4722 struct nfs4_label
*olabel
)
4725 struct iattr sattr
= {0};
4726 struct nfs_server
*server
= NFS_SERVER(inode
);
4727 const u32 bitmask
[3] = { 0, 0, FATTR4_WORD2_SECURITY_LABEL
};
4728 struct nfs_setattrargs arg
= {
4729 .fh
= NFS_FH(inode
),
4735 struct nfs_setattrres res
= {
4740 struct rpc_message msg
= {
4741 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETATTR
],
4747 nfs4_stateid_copy(&arg
.stateid
, &zero_stateid
);
4749 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
4751 dprintk("%s failed: %d\n", __func__
, status
);
4756 static int nfs4_do_set_security_label(struct inode
*inode
,
4757 struct nfs4_label
*ilabel
,
4758 struct nfs_fattr
*fattr
,
4759 struct nfs4_label
*olabel
)
4761 struct nfs4_exception exception
= { };
4765 err
= _nfs4_do_set_security_label(inode
, ilabel
,
4767 trace_nfs4_set_security_label(inode
, err
);
4768 err
= nfs4_handle_exception(NFS_SERVER(inode
), err
,
4770 } while (exception
.retry
);
4775 nfs4_set_security_label(struct dentry
*dentry
, const void *buf
, size_t buflen
)
4777 struct nfs4_label ilabel
, *olabel
= NULL
;
4778 struct nfs_fattr fattr
;
4779 struct rpc_cred
*cred
;
4780 struct inode
*inode
= dentry
->d_inode
;
4783 if (!nfs_server_capable(inode
, NFS_CAP_SECURITY_LABEL
))
4786 nfs_fattr_init(&fattr
);
4790 ilabel
.label
= (char *)buf
;
4791 ilabel
.len
= buflen
;
4793 cred
= rpc_lookup_cred();
4795 return PTR_ERR(cred
);
4797 olabel
= nfs4_label_alloc(NFS_SERVER(inode
), GFP_KERNEL
);
4798 if (IS_ERR(olabel
)) {
4799 status
= -PTR_ERR(olabel
);
4803 status
= nfs4_do_set_security_label(inode
, &ilabel
, &fattr
, olabel
);
4805 nfs_setsecurity(inode
, &fattr
, olabel
);
4807 nfs4_label_free(olabel
);
4812 #endif /* CONFIG_NFS_V4_SECURITY_LABEL */
4816 nfs4_async_handle_error(struct rpc_task
*task
, const struct nfs_server
*server
, struct nfs4_state
*state
)
4818 struct nfs_client
*clp
= server
->nfs_client
;
4820 if (task
->tk_status
>= 0)
4822 switch(task
->tk_status
) {
4823 case -NFS4ERR_DELEG_REVOKED
:
4824 case -NFS4ERR_ADMIN_REVOKED
:
4825 case -NFS4ERR_BAD_STATEID
:
4828 nfs_remove_bad_delegation(state
->inode
);
4829 case -NFS4ERR_OPENMODE
:
4832 if (nfs4_schedule_stateid_recovery(server
, state
) < 0)
4833 goto recovery_failed
;
4834 goto wait_on_recovery
;
4835 case -NFS4ERR_EXPIRED
:
4836 if (state
!= NULL
) {
4837 if (nfs4_schedule_stateid_recovery(server
, state
) < 0)
4838 goto recovery_failed
;
4840 case -NFS4ERR_STALE_STATEID
:
4841 case -NFS4ERR_STALE_CLIENTID
:
4842 nfs4_schedule_lease_recovery(clp
);
4843 goto wait_on_recovery
;
4844 case -NFS4ERR_MOVED
:
4845 if (nfs4_schedule_migration_recovery(server
) < 0)
4846 goto recovery_failed
;
4847 goto wait_on_recovery
;
4848 case -NFS4ERR_LEASE_MOVED
:
4849 nfs4_schedule_lease_moved_recovery(clp
);
4850 goto wait_on_recovery
;
4851 #if defined(CONFIG_NFS_V4_1)
4852 case -NFS4ERR_BADSESSION
:
4853 case -NFS4ERR_BADSLOT
:
4854 case -NFS4ERR_BAD_HIGH_SLOT
:
4855 case -NFS4ERR_DEADSESSION
:
4856 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
4857 case -NFS4ERR_SEQ_FALSE_RETRY
:
4858 case -NFS4ERR_SEQ_MISORDERED
:
4859 dprintk("%s ERROR %d, Reset session\n", __func__
,
4861 nfs4_schedule_session_recovery(clp
->cl_session
, task
->tk_status
);
4862 goto wait_on_recovery
;
4863 #endif /* CONFIG_NFS_V4_1 */
4864 case -NFS4ERR_DELAY
:
4865 nfs_inc_server_stats(server
, NFSIOS_DELAY
);
4866 case -NFS4ERR_GRACE
:
4867 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
4868 case -NFS4ERR_RETRY_UNCACHED_REP
:
4869 case -NFS4ERR_OLD_STATEID
:
4872 task
->tk_status
= nfs4_map_errors(task
->tk_status
);
4875 task
->tk_status
= -EIO
;
4878 rpc_sleep_on(&clp
->cl_rpcwaitq
, task
, NULL
);
4879 if (test_bit(NFS4CLNT_MANAGER_RUNNING
, &clp
->cl_state
) == 0)
4880 rpc_wake_up_queued_task(&clp
->cl_rpcwaitq
, task
);
4881 if (test_bit(NFS_MIG_FAILED
, &server
->mig_status
))
4882 goto recovery_failed
;
4884 task
->tk_status
= 0;
4888 static void nfs4_init_boot_verifier(const struct nfs_client
*clp
,
4889 nfs4_verifier
*bootverf
)
4893 if (test_bit(NFS4CLNT_PURGE_STATE
, &clp
->cl_state
)) {
4894 /* An impossible timestamp guarantees this value
4895 * will never match a generated boot time. */
4897 verf
[1] = cpu_to_be32(NSEC_PER_SEC
+ 1);
4899 struct nfs_net
*nn
= net_generic(clp
->cl_net
, nfs_net_id
);
4900 verf
[0] = cpu_to_be32(nn
->boot_time
.tv_sec
);
4901 verf
[1] = cpu_to_be32(nn
->boot_time
.tv_nsec
);
4903 memcpy(bootverf
->data
, verf
, sizeof(bootverf
->data
));
4907 nfs4_init_nonuniform_client_string(const struct nfs_client
*clp
,
4908 char *buf
, size_t len
)
4910 unsigned int result
;
4913 result
= scnprintf(buf
, len
, "Linux NFSv4.0 %s/%s %s",
4915 rpc_peeraddr2str(clp
->cl_rpcclient
,
4917 rpc_peeraddr2str(clp
->cl_rpcclient
,
4918 RPC_DISPLAY_PROTO
));
4924 nfs4_init_uniform_client_string(const struct nfs_client
*clp
,
4925 char *buf
, size_t len
)
4927 const char *nodename
= clp
->cl_rpcclient
->cl_nodename
;
4929 if (nfs4_client_id_uniquifier
[0] != '\0')
4930 return scnprintf(buf
, len
, "Linux NFSv%u.%u %s/%s",
4931 clp
->rpc_ops
->version
,
4932 clp
->cl_minorversion
,
4933 nfs4_client_id_uniquifier
,
4935 return scnprintf(buf
, len
, "Linux NFSv%u.%u %s",
4936 clp
->rpc_ops
->version
, clp
->cl_minorversion
,
4941 * nfs4_callback_up_net() starts only "tcp" and "tcp6" callback
4942 * services. Advertise one based on the address family of the
4946 nfs4_init_callback_netid(const struct nfs_client
*clp
, char *buf
, size_t len
)
4948 if (strchr(clp
->cl_ipaddr
, ':') != NULL
)
4949 return scnprintf(buf
, len
, "tcp6");
4951 return scnprintf(buf
, len
, "tcp");
4954 static void nfs4_setclientid_done(struct rpc_task
*task
, void *calldata
)
4956 struct nfs4_setclientid
*sc
= calldata
;
4958 if (task
->tk_status
== 0)
4959 sc
->sc_cred
= get_rpccred(task
->tk_rqstp
->rq_cred
);
4962 static const struct rpc_call_ops nfs4_setclientid_ops
= {
4963 .rpc_call_done
= nfs4_setclientid_done
,
4967 * nfs4_proc_setclientid - Negotiate client ID
4968 * @clp: state data structure
4969 * @program: RPC program for NFSv4 callback service
4970 * @port: IP port number for NFS4 callback service
4971 * @cred: RPC credential to use for this call
4972 * @res: where to place the result
4974 * Returns zero, a negative errno, or a negative NFS4ERR status code.
4976 int nfs4_proc_setclientid(struct nfs_client
*clp
, u32 program
,
4977 unsigned short port
, struct rpc_cred
*cred
,
4978 struct nfs4_setclientid_res
*res
)
4980 nfs4_verifier sc_verifier
;
4981 struct nfs4_setclientid setclientid
= {
4982 .sc_verifier
= &sc_verifier
,
4984 .sc_cb_ident
= clp
->cl_cb_ident
,
4986 struct rpc_message msg
= {
4987 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETCLIENTID
],
4988 .rpc_argp
= &setclientid
,
4992 struct rpc_task
*task
;
4993 struct rpc_task_setup task_setup_data
= {
4994 .rpc_client
= clp
->cl_rpcclient
,
4995 .rpc_message
= &msg
,
4996 .callback_ops
= &nfs4_setclientid_ops
,
4997 .callback_data
= &setclientid
,
4998 .flags
= RPC_TASK_TIMEOUT
,
5002 /* nfs_client_id4 */
5003 nfs4_init_boot_verifier(clp
, &sc_verifier
);
5004 if (test_bit(NFS_CS_MIGRATION
, &clp
->cl_flags
))
5005 setclientid
.sc_name_len
=
5006 nfs4_init_uniform_client_string(clp
,
5007 setclientid
.sc_name
,
5008 sizeof(setclientid
.sc_name
));
5010 setclientid
.sc_name_len
=
5011 nfs4_init_nonuniform_client_string(clp
,
5012 setclientid
.sc_name
,
5013 sizeof(setclientid
.sc_name
));
5015 setclientid
.sc_netid_len
=
5016 nfs4_init_callback_netid(clp
,
5017 setclientid
.sc_netid
,
5018 sizeof(setclientid
.sc_netid
));
5019 setclientid
.sc_uaddr_len
= scnprintf(setclientid
.sc_uaddr
,
5020 sizeof(setclientid
.sc_uaddr
), "%s.%u.%u",
5021 clp
->cl_ipaddr
, port
>> 8, port
& 255);
5023 dprintk("NFS call setclientid auth=%s, '%.*s'\n",
5024 clp
->cl_rpcclient
->cl_auth
->au_ops
->au_name
,
5025 setclientid
.sc_name_len
, setclientid
.sc_name
);
5026 task
= rpc_run_task(&task_setup_data
);
5028 status
= PTR_ERR(task
);
5031 status
= task
->tk_status
;
5032 if (setclientid
.sc_cred
) {
5033 clp
->cl_acceptor
= rpcauth_stringify_acceptor(setclientid
.sc_cred
);
5034 put_rpccred(setclientid
.sc_cred
);
5038 trace_nfs4_setclientid(clp
, status
);
5039 dprintk("NFS reply setclientid: %d\n", status
);
5044 * nfs4_proc_setclientid_confirm - Confirm client ID
5045 * @clp: state data structure
5046 * @res: result of a previous SETCLIENTID
5047 * @cred: RPC credential to use for this call
5049 * Returns zero, a negative errno, or a negative NFS4ERR status code.
5051 int nfs4_proc_setclientid_confirm(struct nfs_client
*clp
,
5052 struct nfs4_setclientid_res
*arg
,
5053 struct rpc_cred
*cred
)
5055 struct rpc_message msg
= {
5056 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETCLIENTID_CONFIRM
],
5062 dprintk("NFS call setclientid_confirm auth=%s, (client ID %llx)\n",
5063 clp
->cl_rpcclient
->cl_auth
->au_ops
->au_name
,
5065 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
5066 trace_nfs4_setclientid_confirm(clp
, status
);
5067 dprintk("NFS reply setclientid_confirm: %d\n", status
);
5071 struct nfs4_delegreturndata
{
5072 struct nfs4_delegreturnargs args
;
5073 struct nfs4_delegreturnres res
;
5075 nfs4_stateid stateid
;
5076 unsigned long timestamp
;
5077 struct nfs_fattr fattr
;
5079 struct inode
*inode
;
5084 static void nfs4_delegreturn_done(struct rpc_task
*task
, void *calldata
)
5086 struct nfs4_delegreturndata
*data
= calldata
;
5088 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
5091 trace_nfs4_delegreturn_exit(&data
->args
, &data
->res
, task
->tk_status
);
5092 switch (task
->tk_status
) {
5094 renew_lease(data
->res
.server
, data
->timestamp
);
5095 case -NFS4ERR_ADMIN_REVOKED
:
5096 case -NFS4ERR_DELEG_REVOKED
:
5097 case -NFS4ERR_BAD_STATEID
:
5098 case -NFS4ERR_OLD_STATEID
:
5099 case -NFS4ERR_STALE_STATEID
:
5100 case -NFS4ERR_EXPIRED
:
5101 task
->tk_status
= 0;
5103 pnfs_roc_set_barrier(data
->inode
, data
->roc_barrier
);
5106 if (nfs4_async_handle_error(task
, data
->res
.server
, NULL
) ==
5108 rpc_restart_call_prepare(task
);
5112 data
->rpc_status
= task
->tk_status
;
5115 static void nfs4_delegreturn_release(void *calldata
)
5117 struct nfs4_delegreturndata
*data
= calldata
;
5120 pnfs_roc_release(data
->inode
);
5124 static void nfs4_delegreturn_prepare(struct rpc_task
*task
, void *data
)
5126 struct nfs4_delegreturndata
*d_data
;
5128 d_data
= (struct nfs4_delegreturndata
*)data
;
5131 pnfs_roc_drain(d_data
->inode
, &d_data
->roc_barrier
, task
))
5134 nfs4_setup_sequence(d_data
->res
.server
,
5135 &d_data
->args
.seq_args
,
5136 &d_data
->res
.seq_res
,
5140 static const struct rpc_call_ops nfs4_delegreturn_ops
= {
5141 .rpc_call_prepare
= nfs4_delegreturn_prepare
,
5142 .rpc_call_done
= nfs4_delegreturn_done
,
5143 .rpc_release
= nfs4_delegreturn_release
,
5146 static int _nfs4_proc_delegreturn(struct inode
*inode
, struct rpc_cred
*cred
, const nfs4_stateid
*stateid
, int issync
)
5148 struct nfs4_delegreturndata
*data
;
5149 struct nfs_server
*server
= NFS_SERVER(inode
);
5150 struct rpc_task
*task
;
5151 struct rpc_message msg
= {
5152 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DELEGRETURN
],
5155 struct rpc_task_setup task_setup_data
= {
5156 .rpc_client
= server
->client
,
5157 .rpc_message
= &msg
,
5158 .callback_ops
= &nfs4_delegreturn_ops
,
5159 .flags
= RPC_TASK_ASYNC
,
5163 data
= kzalloc(sizeof(*data
), GFP_NOFS
);
5166 nfs4_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
5167 data
->args
.fhandle
= &data
->fh
;
5168 data
->args
.stateid
= &data
->stateid
;
5169 data
->args
.bitmask
= server
->cache_consistency_bitmask
;
5170 nfs_copy_fh(&data
->fh
, NFS_FH(inode
));
5171 nfs4_stateid_copy(&data
->stateid
, stateid
);
5172 data
->res
.fattr
= &data
->fattr
;
5173 data
->res
.server
= server
;
5174 nfs_fattr_init(data
->res
.fattr
);
5175 data
->timestamp
= jiffies
;
5176 data
->rpc_status
= 0;
5177 data
->inode
= inode
;
5178 data
->roc
= list_empty(&NFS_I(inode
)->open_files
) ?
5179 pnfs_roc(inode
) : false;
5181 task_setup_data
.callback_data
= data
;
5182 msg
.rpc_argp
= &data
->args
;
5183 msg
.rpc_resp
= &data
->res
;
5184 task
= rpc_run_task(&task_setup_data
);
5186 return PTR_ERR(task
);
5189 status
= nfs4_wait_for_completion_rpc_task(task
);
5192 status
= data
->rpc_status
;
5194 nfs_post_op_update_inode_force_wcc(inode
, &data
->fattr
);
5196 nfs_refresh_inode(inode
, &data
->fattr
);
5202 int nfs4_proc_delegreturn(struct inode
*inode
, struct rpc_cred
*cred
, const nfs4_stateid
*stateid
, int issync
)
5204 struct nfs_server
*server
= NFS_SERVER(inode
);
5205 struct nfs4_exception exception
= { };
5208 err
= _nfs4_proc_delegreturn(inode
, cred
, stateid
, issync
);
5209 trace_nfs4_delegreturn(inode
, err
);
5211 case -NFS4ERR_STALE_STATEID
:
5212 case -NFS4ERR_EXPIRED
:
5216 err
= nfs4_handle_exception(server
, err
, &exception
);
5217 } while (exception
.retry
);
5221 #define NFS4_LOCK_MINTIMEOUT (1 * HZ)
5222 #define NFS4_LOCK_MAXTIMEOUT (30 * HZ)
5225 * sleep, with exponential backoff, and retry the LOCK operation.
5227 static unsigned long
5228 nfs4_set_lock_task_retry(unsigned long timeout
)
5230 freezable_schedule_timeout_killable_unsafe(timeout
);
5232 if (timeout
> NFS4_LOCK_MAXTIMEOUT
)
5233 return NFS4_LOCK_MAXTIMEOUT
;
5237 static int _nfs4_proc_getlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
5239 struct inode
*inode
= state
->inode
;
5240 struct nfs_server
*server
= NFS_SERVER(inode
);
5241 struct nfs_client
*clp
= server
->nfs_client
;
5242 struct nfs_lockt_args arg
= {
5243 .fh
= NFS_FH(inode
),
5246 struct nfs_lockt_res res
= {
5249 struct rpc_message msg
= {
5250 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCKT
],
5253 .rpc_cred
= state
->owner
->so_cred
,
5255 struct nfs4_lock_state
*lsp
;
5258 arg
.lock_owner
.clientid
= clp
->cl_clientid
;
5259 status
= nfs4_set_lock_state(state
, request
);
5262 lsp
= request
->fl_u
.nfs4_fl
.owner
;
5263 arg
.lock_owner
.id
= lsp
->ls_seqid
.owner_id
;
5264 arg
.lock_owner
.s_dev
= server
->s_dev
;
5265 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
5268 request
->fl_type
= F_UNLCK
;
5270 case -NFS4ERR_DENIED
:
5273 request
->fl_ops
->fl_release_private(request
);
5274 request
->fl_ops
= NULL
;
5279 static int nfs4_proc_getlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
5281 struct nfs4_exception exception
= { };
5285 err
= _nfs4_proc_getlk(state
, cmd
, request
);
5286 trace_nfs4_get_lock(request
, state
, cmd
, err
);
5287 err
= nfs4_handle_exception(NFS_SERVER(state
->inode
), err
,
5289 } while (exception
.retry
);
5293 static int do_vfs_lock(struct file
*file
, struct file_lock
*fl
)
5296 switch (fl
->fl_flags
& (FL_POSIX
|FL_FLOCK
)) {
5298 res
= posix_lock_file_wait(file
, fl
);
5301 res
= flock_lock_file_wait(file
, fl
);
5309 struct nfs4_unlockdata
{
5310 struct nfs_locku_args arg
;
5311 struct nfs_locku_res res
;
5312 struct nfs4_lock_state
*lsp
;
5313 struct nfs_open_context
*ctx
;
5314 struct file_lock fl
;
5315 const struct nfs_server
*server
;
5316 unsigned long timestamp
;
5319 static struct nfs4_unlockdata
*nfs4_alloc_unlockdata(struct file_lock
*fl
,
5320 struct nfs_open_context
*ctx
,
5321 struct nfs4_lock_state
*lsp
,
5322 struct nfs_seqid
*seqid
)
5324 struct nfs4_unlockdata
*p
;
5325 struct inode
*inode
= lsp
->ls_state
->inode
;
5327 p
= kzalloc(sizeof(*p
), GFP_NOFS
);
5330 p
->arg
.fh
= NFS_FH(inode
);
5332 p
->arg
.seqid
= seqid
;
5333 p
->res
.seqid
= seqid
;
5334 p
->arg
.stateid
= &lsp
->ls_stateid
;
5336 atomic_inc(&lsp
->ls_count
);
5337 /* Ensure we don't close file until we're done freeing locks! */
5338 p
->ctx
= get_nfs_open_context(ctx
);
5339 memcpy(&p
->fl
, fl
, sizeof(p
->fl
));
5340 p
->server
= NFS_SERVER(inode
);
5344 static void nfs4_locku_release_calldata(void *data
)
5346 struct nfs4_unlockdata
*calldata
= data
;
5347 nfs_free_seqid(calldata
->arg
.seqid
);
5348 nfs4_put_lock_state(calldata
->lsp
);
5349 put_nfs_open_context(calldata
->ctx
);
5353 static void nfs4_locku_done(struct rpc_task
*task
, void *data
)
5355 struct nfs4_unlockdata
*calldata
= data
;
5357 if (!nfs4_sequence_done(task
, &calldata
->res
.seq_res
))
5359 switch (task
->tk_status
) {
5361 nfs4_stateid_copy(&calldata
->lsp
->ls_stateid
,
5362 &calldata
->res
.stateid
);
5363 renew_lease(calldata
->server
, calldata
->timestamp
);
5365 case -NFS4ERR_BAD_STATEID
:
5366 case -NFS4ERR_OLD_STATEID
:
5367 case -NFS4ERR_STALE_STATEID
:
5368 case -NFS4ERR_EXPIRED
:
5371 if (nfs4_async_handle_error(task
, calldata
->server
, NULL
) == -EAGAIN
)
5372 rpc_restart_call_prepare(task
);
5374 nfs_release_seqid(calldata
->arg
.seqid
);
5377 static void nfs4_locku_prepare(struct rpc_task
*task
, void *data
)
5379 struct nfs4_unlockdata
*calldata
= data
;
5381 if (nfs_wait_on_sequence(calldata
->arg
.seqid
, task
) != 0)
5383 if (test_bit(NFS_LOCK_INITIALIZED
, &calldata
->lsp
->ls_flags
) == 0) {
5384 /* Note: exit _without_ running nfs4_locku_done */
5387 calldata
->timestamp
= jiffies
;
5388 if (nfs4_setup_sequence(calldata
->server
,
5389 &calldata
->arg
.seq_args
,
5390 &calldata
->res
.seq_res
,
5392 nfs_release_seqid(calldata
->arg
.seqid
);
5395 task
->tk_action
= NULL
;
5397 nfs4_sequence_done(task
, &calldata
->res
.seq_res
);
5400 static const struct rpc_call_ops nfs4_locku_ops
= {
5401 .rpc_call_prepare
= nfs4_locku_prepare
,
5402 .rpc_call_done
= nfs4_locku_done
,
5403 .rpc_release
= nfs4_locku_release_calldata
,
5406 static struct rpc_task
*nfs4_do_unlck(struct file_lock
*fl
,
5407 struct nfs_open_context
*ctx
,
5408 struct nfs4_lock_state
*lsp
,
5409 struct nfs_seqid
*seqid
)
5411 struct nfs4_unlockdata
*data
;
5412 struct rpc_message msg
= {
5413 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCKU
],
5414 .rpc_cred
= ctx
->cred
,
5416 struct rpc_task_setup task_setup_data
= {
5417 .rpc_client
= NFS_CLIENT(lsp
->ls_state
->inode
),
5418 .rpc_message
= &msg
,
5419 .callback_ops
= &nfs4_locku_ops
,
5420 .workqueue
= nfsiod_workqueue
,
5421 .flags
= RPC_TASK_ASYNC
,
5424 nfs4_state_protect(NFS_SERVER(lsp
->ls_state
->inode
)->nfs_client
,
5425 NFS_SP4_MACH_CRED_CLEANUP
, &task_setup_data
.rpc_client
, &msg
);
5427 /* Ensure this is an unlock - when canceling a lock, the
5428 * canceled lock is passed in, and it won't be an unlock.
5430 fl
->fl_type
= F_UNLCK
;
5432 data
= nfs4_alloc_unlockdata(fl
, ctx
, lsp
, seqid
);
5434 nfs_free_seqid(seqid
);
5435 return ERR_PTR(-ENOMEM
);
5438 nfs4_init_sequence(&data
->arg
.seq_args
, &data
->res
.seq_res
, 1);
5439 msg
.rpc_argp
= &data
->arg
;
5440 msg
.rpc_resp
= &data
->res
;
5441 task_setup_data
.callback_data
= data
;
5442 return rpc_run_task(&task_setup_data
);
5445 static int nfs4_proc_unlck(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
5447 struct inode
*inode
= state
->inode
;
5448 struct nfs4_state_owner
*sp
= state
->owner
;
5449 struct nfs_inode
*nfsi
= NFS_I(inode
);
5450 struct nfs_seqid
*seqid
;
5451 struct nfs4_lock_state
*lsp
;
5452 struct rpc_task
*task
;
5454 unsigned char fl_flags
= request
->fl_flags
;
5456 status
= nfs4_set_lock_state(state
, request
);
5457 /* Unlock _before_ we do the RPC call */
5458 request
->fl_flags
|= FL_EXISTS
;
5459 /* Exclude nfs_delegation_claim_locks() */
5460 mutex_lock(&sp
->so_delegreturn_mutex
);
5461 /* Exclude nfs4_reclaim_open_stateid() - note nesting! */
5462 down_read(&nfsi
->rwsem
);
5463 if (do_vfs_lock(request
->fl_file
, request
) == -ENOENT
) {
5464 up_read(&nfsi
->rwsem
);
5465 mutex_unlock(&sp
->so_delegreturn_mutex
);
5468 up_read(&nfsi
->rwsem
);
5469 mutex_unlock(&sp
->so_delegreturn_mutex
);
5472 /* Is this a delegated lock? */
5473 lsp
= request
->fl_u
.nfs4_fl
.owner
;
5474 if (test_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
) == 0)
5476 seqid
= nfs_alloc_seqid(&lsp
->ls_seqid
, GFP_KERNEL
);
5480 task
= nfs4_do_unlck(request
, nfs_file_open_context(request
->fl_file
), lsp
, seqid
);
5481 status
= PTR_ERR(task
);
5484 status
= nfs4_wait_for_completion_rpc_task(task
);
5487 request
->fl_flags
= fl_flags
;
5488 trace_nfs4_unlock(request
, state
, F_SETLK
, status
);
5492 struct nfs4_lockdata
{
5493 struct nfs_lock_args arg
;
5494 struct nfs_lock_res res
;
5495 struct nfs4_lock_state
*lsp
;
5496 struct nfs_open_context
*ctx
;
5497 struct file_lock fl
;
5498 unsigned long timestamp
;
5501 struct nfs_server
*server
;
5504 static struct nfs4_lockdata
*nfs4_alloc_lockdata(struct file_lock
*fl
,
5505 struct nfs_open_context
*ctx
, struct nfs4_lock_state
*lsp
,
5508 struct nfs4_lockdata
*p
;
5509 struct inode
*inode
= lsp
->ls_state
->inode
;
5510 struct nfs_server
*server
= NFS_SERVER(inode
);
5512 p
= kzalloc(sizeof(*p
), gfp_mask
);
5516 p
->arg
.fh
= NFS_FH(inode
);
5518 p
->arg
.open_seqid
= nfs_alloc_seqid(&lsp
->ls_state
->owner
->so_seqid
, gfp_mask
);
5519 if (p
->arg
.open_seqid
== NULL
)
5521 p
->arg
.lock_seqid
= nfs_alloc_seqid(&lsp
->ls_seqid
, gfp_mask
);
5522 if (p
->arg
.lock_seqid
== NULL
)
5523 goto out_free_seqid
;
5524 p
->arg
.lock_stateid
= &lsp
->ls_stateid
;
5525 p
->arg
.lock_owner
.clientid
= server
->nfs_client
->cl_clientid
;
5526 p
->arg
.lock_owner
.id
= lsp
->ls_seqid
.owner_id
;
5527 p
->arg
.lock_owner
.s_dev
= server
->s_dev
;
5528 p
->res
.lock_seqid
= p
->arg
.lock_seqid
;
5531 atomic_inc(&lsp
->ls_count
);
5532 p
->ctx
= get_nfs_open_context(ctx
);
5533 memcpy(&p
->fl
, fl
, sizeof(p
->fl
));
5536 nfs_free_seqid(p
->arg
.open_seqid
);
5542 static void nfs4_lock_prepare(struct rpc_task
*task
, void *calldata
)
5544 struct nfs4_lockdata
*data
= calldata
;
5545 struct nfs4_state
*state
= data
->lsp
->ls_state
;
5547 dprintk("%s: begin!\n", __func__
);
5548 if (nfs_wait_on_sequence(data
->arg
.lock_seqid
, task
) != 0)
5550 /* Do we need to do an open_to_lock_owner? */
5551 if (!(data
->arg
.lock_seqid
->sequence
->flags
& NFS_SEQID_CONFIRMED
)) {
5552 if (nfs_wait_on_sequence(data
->arg
.open_seqid
, task
) != 0) {
5553 goto out_release_lock_seqid
;
5555 data
->arg
.open_stateid
= &state
->open_stateid
;
5556 data
->arg
.new_lock_owner
= 1;
5557 data
->res
.open_seqid
= data
->arg
.open_seqid
;
5559 data
->arg
.new_lock_owner
= 0;
5560 if (!nfs4_valid_open_stateid(state
)) {
5561 data
->rpc_status
= -EBADF
;
5562 task
->tk_action
= NULL
;
5563 goto out_release_open_seqid
;
5565 data
->timestamp
= jiffies
;
5566 if (nfs4_setup_sequence(data
->server
,
5567 &data
->arg
.seq_args
,
5571 out_release_open_seqid
:
5572 nfs_release_seqid(data
->arg
.open_seqid
);
5573 out_release_lock_seqid
:
5574 nfs_release_seqid(data
->arg
.lock_seqid
);
5576 nfs4_sequence_done(task
, &data
->res
.seq_res
);
5577 dprintk("%s: done!, ret = %d\n", __func__
, data
->rpc_status
);
5580 static void nfs4_lock_done(struct rpc_task
*task
, void *calldata
)
5582 struct nfs4_lockdata
*data
= calldata
;
5584 dprintk("%s: begin!\n", __func__
);
5586 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
5589 data
->rpc_status
= task
->tk_status
;
5590 if (data
->arg
.new_lock_owner
!= 0) {
5591 if (data
->rpc_status
== 0)
5592 nfs_confirm_seqid(&data
->lsp
->ls_seqid
, 0);
5596 if (data
->rpc_status
== 0) {
5597 nfs4_stateid_copy(&data
->lsp
->ls_stateid
, &data
->res
.stateid
);
5598 set_bit(NFS_LOCK_INITIALIZED
, &data
->lsp
->ls_flags
);
5599 renew_lease(NFS_SERVER(data
->ctx
->dentry
->d_inode
), data
->timestamp
);
5602 dprintk("%s: done, ret = %d!\n", __func__
, data
->rpc_status
);
5605 static void nfs4_lock_release(void *calldata
)
5607 struct nfs4_lockdata
*data
= calldata
;
5609 dprintk("%s: begin!\n", __func__
);
5610 nfs_free_seqid(data
->arg
.open_seqid
);
5611 if (data
->cancelled
!= 0) {
5612 struct rpc_task
*task
;
5613 task
= nfs4_do_unlck(&data
->fl
, data
->ctx
, data
->lsp
,
5614 data
->arg
.lock_seqid
);
5616 rpc_put_task_async(task
);
5617 dprintk("%s: cancelling lock!\n", __func__
);
5619 nfs_free_seqid(data
->arg
.lock_seqid
);
5620 nfs4_put_lock_state(data
->lsp
);
5621 put_nfs_open_context(data
->ctx
);
5623 dprintk("%s: done!\n", __func__
);
5626 static const struct rpc_call_ops nfs4_lock_ops
= {
5627 .rpc_call_prepare
= nfs4_lock_prepare
,
5628 .rpc_call_done
= nfs4_lock_done
,
5629 .rpc_release
= nfs4_lock_release
,
5632 static void nfs4_handle_setlk_error(struct nfs_server
*server
, struct nfs4_lock_state
*lsp
, int new_lock_owner
, int error
)
5635 case -NFS4ERR_ADMIN_REVOKED
:
5636 case -NFS4ERR_BAD_STATEID
:
5637 lsp
->ls_seqid
.flags
&= ~NFS_SEQID_CONFIRMED
;
5638 if (new_lock_owner
!= 0 ||
5639 test_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
) != 0)
5640 nfs4_schedule_stateid_recovery(server
, lsp
->ls_state
);
5642 case -NFS4ERR_STALE_STATEID
:
5643 lsp
->ls_seqid
.flags
&= ~NFS_SEQID_CONFIRMED
;
5644 case -NFS4ERR_EXPIRED
:
5645 nfs4_schedule_lease_recovery(server
->nfs_client
);
5649 static int _nfs4_do_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*fl
, int recovery_type
)
5651 struct nfs4_lockdata
*data
;
5652 struct rpc_task
*task
;
5653 struct rpc_message msg
= {
5654 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCK
],
5655 .rpc_cred
= state
->owner
->so_cred
,
5657 struct rpc_task_setup task_setup_data
= {
5658 .rpc_client
= NFS_CLIENT(state
->inode
),
5659 .rpc_message
= &msg
,
5660 .callback_ops
= &nfs4_lock_ops
,
5661 .workqueue
= nfsiod_workqueue
,
5662 .flags
= RPC_TASK_ASYNC
,
5666 dprintk("%s: begin!\n", __func__
);
5667 data
= nfs4_alloc_lockdata(fl
, nfs_file_open_context(fl
->fl_file
),
5668 fl
->fl_u
.nfs4_fl
.owner
,
5669 recovery_type
== NFS_LOCK_NEW
? GFP_KERNEL
: GFP_NOFS
);
5673 data
->arg
.block
= 1;
5674 nfs4_init_sequence(&data
->arg
.seq_args
, &data
->res
.seq_res
, 1);
5675 msg
.rpc_argp
= &data
->arg
;
5676 msg
.rpc_resp
= &data
->res
;
5677 task_setup_data
.callback_data
= data
;
5678 if (recovery_type
> NFS_LOCK_NEW
) {
5679 if (recovery_type
== NFS_LOCK_RECLAIM
)
5680 data
->arg
.reclaim
= NFS_LOCK_RECLAIM
;
5681 nfs4_set_sequence_privileged(&data
->arg
.seq_args
);
5683 task
= rpc_run_task(&task_setup_data
);
5685 return PTR_ERR(task
);
5686 ret
= nfs4_wait_for_completion_rpc_task(task
);
5688 ret
= data
->rpc_status
;
5690 nfs4_handle_setlk_error(data
->server
, data
->lsp
,
5691 data
->arg
.new_lock_owner
, ret
);
5693 data
->cancelled
= 1;
5695 dprintk("%s: done, ret = %d!\n", __func__
, ret
);
5699 static int nfs4_lock_reclaim(struct nfs4_state
*state
, struct file_lock
*request
)
5701 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
5702 struct nfs4_exception exception
= {
5703 .inode
= state
->inode
,
5708 /* Cache the lock if possible... */
5709 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) != 0)
5711 err
= _nfs4_do_setlk(state
, F_SETLK
, request
, NFS_LOCK_RECLAIM
);
5712 trace_nfs4_lock_reclaim(request
, state
, F_SETLK
, err
);
5713 if (err
!= -NFS4ERR_DELAY
)
5715 nfs4_handle_exception(server
, err
, &exception
);
5716 } while (exception
.retry
);
5720 static int nfs4_lock_expired(struct nfs4_state
*state
, struct file_lock
*request
)
5722 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
5723 struct nfs4_exception exception
= {
5724 .inode
= state
->inode
,
5728 err
= nfs4_set_lock_state(state
, request
);
5731 if (!recover_lost_locks
) {
5732 set_bit(NFS_LOCK_LOST
, &request
->fl_u
.nfs4_fl
.owner
->ls_flags
);
5736 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) != 0)
5738 err
= _nfs4_do_setlk(state
, F_SETLK
, request
, NFS_LOCK_EXPIRED
);
5739 trace_nfs4_lock_expired(request
, state
, F_SETLK
, err
);
5743 case -NFS4ERR_GRACE
:
5744 case -NFS4ERR_DELAY
:
5745 nfs4_handle_exception(server
, err
, &exception
);
5748 } while (exception
.retry
);
5753 #if defined(CONFIG_NFS_V4_1)
5755 * nfs41_check_expired_locks - possibly free a lock stateid
5757 * @state: NFSv4 state for an inode
5759 * Returns NFS_OK if recovery for this stateid is now finished.
5760 * Otherwise a negative NFS4ERR value is returned.
5762 static int nfs41_check_expired_locks(struct nfs4_state
*state
)
5764 int status
, ret
= -NFS4ERR_BAD_STATEID
;
5765 struct nfs4_lock_state
*lsp
;
5766 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
5768 list_for_each_entry(lsp
, &state
->lock_states
, ls_locks
) {
5769 if (test_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
)) {
5770 struct rpc_cred
*cred
= lsp
->ls_state
->owner
->so_cred
;
5772 status
= nfs41_test_stateid(server
,
5775 trace_nfs4_test_lock_stateid(state
, lsp
, status
);
5776 if (status
!= NFS_OK
) {
5777 /* Free the stateid unless the server
5778 * informs us the stateid is unrecognized. */
5779 if (status
!= -NFS4ERR_BAD_STATEID
)
5780 nfs41_free_stateid(server
,
5783 clear_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
);
5792 static int nfs41_lock_expired(struct nfs4_state
*state
, struct file_lock
*request
)
5794 int status
= NFS_OK
;
5796 if (test_bit(LK_STATE_IN_USE
, &state
->flags
))
5797 status
= nfs41_check_expired_locks(state
);
5798 if (status
!= NFS_OK
)
5799 status
= nfs4_lock_expired(state
, request
);
5804 static int _nfs4_proc_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
5806 struct nfs4_state_owner
*sp
= state
->owner
;
5807 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
5808 unsigned char fl_flags
= request
->fl_flags
;
5810 int status
= -ENOLCK
;
5812 if ((fl_flags
& FL_POSIX
) &&
5813 !test_bit(NFS_STATE_POSIX_LOCKS
, &state
->flags
))
5815 /* Is this a delegated open? */
5816 status
= nfs4_set_lock_state(state
, request
);
5819 request
->fl_flags
|= FL_ACCESS
;
5820 status
= do_vfs_lock(request
->fl_file
, request
);
5823 down_read(&nfsi
->rwsem
);
5824 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
)) {
5825 /* Yes: cache locks! */
5826 /* ...but avoid races with delegation recall... */
5827 request
->fl_flags
= fl_flags
& ~FL_SLEEP
;
5828 status
= do_vfs_lock(request
->fl_file
, request
);
5831 seq
= raw_seqcount_begin(&sp
->so_reclaim_seqcount
);
5832 up_read(&nfsi
->rwsem
);
5833 status
= _nfs4_do_setlk(state
, cmd
, request
, NFS_LOCK_NEW
);
5836 down_read(&nfsi
->rwsem
);
5837 if (read_seqcount_retry(&sp
->so_reclaim_seqcount
, seq
)) {
5838 status
= -NFS4ERR_DELAY
;
5841 /* Note: we always want to sleep here! */
5842 request
->fl_flags
= fl_flags
| FL_SLEEP
;
5843 if (do_vfs_lock(request
->fl_file
, request
) < 0)
5844 printk(KERN_WARNING
"NFS: %s: VFS is out of sync with lock "
5845 "manager!\n", __func__
);
5847 up_read(&nfsi
->rwsem
);
5849 request
->fl_flags
= fl_flags
;
5853 static int nfs4_proc_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
5855 struct nfs4_exception exception
= {
5857 .inode
= state
->inode
,
5862 err
= _nfs4_proc_setlk(state
, cmd
, request
);
5863 trace_nfs4_set_lock(request
, state
, cmd
, err
);
5864 if (err
== -NFS4ERR_DENIED
)
5866 err
= nfs4_handle_exception(NFS_SERVER(state
->inode
),
5868 } while (exception
.retry
);
5873 nfs4_proc_lock(struct file
*filp
, int cmd
, struct file_lock
*request
)
5875 struct nfs_open_context
*ctx
;
5876 struct nfs4_state
*state
;
5877 unsigned long timeout
= NFS4_LOCK_MINTIMEOUT
;
5880 /* verify open state */
5881 ctx
= nfs_file_open_context(filp
);
5884 if (request
->fl_start
< 0 || request
->fl_end
< 0)
5887 if (IS_GETLK(cmd
)) {
5889 return nfs4_proc_getlk(state
, F_GETLK
, request
);
5893 if (!(IS_SETLK(cmd
) || IS_SETLKW(cmd
)))
5896 if (request
->fl_type
== F_UNLCK
) {
5898 return nfs4_proc_unlck(state
, cmd
, request
);
5905 * Don't rely on the VFS having checked the file open mode,
5906 * since it won't do this for flock() locks.
5908 switch (request
->fl_type
) {
5910 if (!(filp
->f_mode
& FMODE_READ
))
5914 if (!(filp
->f_mode
& FMODE_WRITE
))
5919 status
= nfs4_proc_setlk(state
, cmd
, request
);
5920 if ((status
!= -EAGAIN
) || IS_SETLK(cmd
))
5922 timeout
= nfs4_set_lock_task_retry(timeout
);
5923 status
= -ERESTARTSYS
;
5926 } while(status
< 0);
5930 int nfs4_lock_delegation_recall(struct file_lock
*fl
, struct nfs4_state
*state
, const nfs4_stateid
*stateid
)
5932 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
5935 err
= nfs4_set_lock_state(state
, fl
);
5938 err
= _nfs4_do_setlk(state
, F_SETLK
, fl
, NFS_LOCK_NEW
);
5939 return nfs4_handle_delegation_recall_error(server
, state
, stateid
, err
);
5942 struct nfs_release_lockowner_data
{
5943 struct nfs4_lock_state
*lsp
;
5944 struct nfs_server
*server
;
5945 struct nfs_release_lockowner_args args
;
5946 struct nfs_release_lockowner_res res
;
5947 unsigned long timestamp
;
5950 static void nfs4_release_lockowner_prepare(struct rpc_task
*task
, void *calldata
)
5952 struct nfs_release_lockowner_data
*data
= calldata
;
5953 struct nfs_server
*server
= data
->server
;
5954 nfs40_setup_sequence(server
, &data
->args
.seq_args
,
5955 &data
->res
.seq_res
, task
);
5956 data
->args
.lock_owner
.clientid
= server
->nfs_client
->cl_clientid
;
5957 data
->timestamp
= jiffies
;
5960 static void nfs4_release_lockowner_done(struct rpc_task
*task
, void *calldata
)
5962 struct nfs_release_lockowner_data
*data
= calldata
;
5963 struct nfs_server
*server
= data
->server
;
5965 nfs40_sequence_done(task
, &data
->res
.seq_res
);
5967 switch (task
->tk_status
) {
5969 renew_lease(server
, data
->timestamp
);
5971 case -NFS4ERR_STALE_CLIENTID
:
5972 case -NFS4ERR_EXPIRED
:
5973 nfs4_schedule_lease_recovery(server
->nfs_client
);
5975 case -NFS4ERR_LEASE_MOVED
:
5976 case -NFS4ERR_DELAY
:
5977 if (nfs4_async_handle_error(task
, server
, NULL
) == -EAGAIN
)
5978 rpc_restart_call_prepare(task
);
5982 static void nfs4_release_lockowner_release(void *calldata
)
5984 struct nfs_release_lockowner_data
*data
= calldata
;
5985 nfs4_free_lock_state(data
->server
, data
->lsp
);
5989 static const struct rpc_call_ops nfs4_release_lockowner_ops
= {
5990 .rpc_call_prepare
= nfs4_release_lockowner_prepare
,
5991 .rpc_call_done
= nfs4_release_lockowner_done
,
5992 .rpc_release
= nfs4_release_lockowner_release
,
5996 nfs4_release_lockowner(struct nfs_server
*server
, struct nfs4_lock_state
*lsp
)
5998 struct nfs_release_lockowner_data
*data
;
5999 struct rpc_message msg
= {
6000 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RELEASE_LOCKOWNER
],
6003 if (server
->nfs_client
->cl_mvops
->minor_version
!= 0)
6006 data
= kmalloc(sizeof(*data
), GFP_NOFS
);
6010 data
->server
= server
;
6011 data
->args
.lock_owner
.clientid
= server
->nfs_client
->cl_clientid
;
6012 data
->args
.lock_owner
.id
= lsp
->ls_seqid
.owner_id
;
6013 data
->args
.lock_owner
.s_dev
= server
->s_dev
;
6015 msg
.rpc_argp
= &data
->args
;
6016 msg
.rpc_resp
= &data
->res
;
6017 nfs4_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 0);
6018 rpc_call_async(server
->client
, &msg
, 0, &nfs4_release_lockowner_ops
, data
);
6021 #define XATTR_NAME_NFSV4_ACL "system.nfs4_acl"
6023 static int nfs4_xattr_set_nfs4_acl(struct dentry
*dentry
, const char *key
,
6024 const void *buf
, size_t buflen
,
6025 int flags
, int type
)
6027 if (strcmp(key
, "") != 0)
6030 return nfs4_proc_set_acl(dentry
->d_inode
, buf
, buflen
);
6033 static int nfs4_xattr_get_nfs4_acl(struct dentry
*dentry
, const char *key
,
6034 void *buf
, size_t buflen
, int type
)
6036 if (strcmp(key
, "") != 0)
6039 return nfs4_proc_get_acl(dentry
->d_inode
, buf
, buflen
);
6042 static size_t nfs4_xattr_list_nfs4_acl(struct dentry
*dentry
, char *list
,
6043 size_t list_len
, const char *name
,
6044 size_t name_len
, int type
)
6046 size_t len
= sizeof(XATTR_NAME_NFSV4_ACL
);
6048 if (!nfs4_server_supports_acls(NFS_SERVER(dentry
->d_inode
)))
6051 if (list
&& len
<= list_len
)
6052 memcpy(list
, XATTR_NAME_NFSV4_ACL
, len
);
6056 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
6057 static inline int nfs4_server_supports_labels(struct nfs_server
*server
)
6059 return server
->caps
& NFS_CAP_SECURITY_LABEL
;
6062 static int nfs4_xattr_set_nfs4_label(struct dentry
*dentry
, const char *key
,
6063 const void *buf
, size_t buflen
,
6064 int flags
, int type
)
6066 if (security_ismaclabel(key
))
6067 return nfs4_set_security_label(dentry
, buf
, buflen
);
6072 static int nfs4_xattr_get_nfs4_label(struct dentry
*dentry
, const char *key
,
6073 void *buf
, size_t buflen
, int type
)
6075 if (security_ismaclabel(key
))
6076 return nfs4_get_security_label(dentry
->d_inode
, buf
, buflen
);
6080 static size_t nfs4_xattr_list_nfs4_label(struct dentry
*dentry
, char *list
,
6081 size_t list_len
, const char *name
,
6082 size_t name_len
, int type
)
6086 if (nfs_server_capable(dentry
->d_inode
, NFS_CAP_SECURITY_LABEL
)) {
6087 len
= security_inode_listsecurity(dentry
->d_inode
, NULL
, 0);
6088 if (list
&& len
<= list_len
)
6089 security_inode_listsecurity(dentry
->d_inode
, list
, len
);
6094 static const struct xattr_handler nfs4_xattr_nfs4_label_handler
= {
6095 .prefix
= XATTR_SECURITY_PREFIX
,
6096 .list
= nfs4_xattr_list_nfs4_label
,
6097 .get
= nfs4_xattr_get_nfs4_label
,
6098 .set
= nfs4_xattr_set_nfs4_label
,
6104 * nfs_fhget will use either the mounted_on_fileid or the fileid
6106 static void nfs_fixup_referral_attributes(struct nfs_fattr
*fattr
)
6108 if (!(((fattr
->valid
& NFS_ATTR_FATTR_MOUNTED_ON_FILEID
) ||
6109 (fattr
->valid
& NFS_ATTR_FATTR_FILEID
)) &&
6110 (fattr
->valid
& NFS_ATTR_FATTR_FSID
) &&
6111 (fattr
->valid
& NFS_ATTR_FATTR_V4_LOCATIONS
)))
6114 fattr
->valid
|= NFS_ATTR_FATTR_TYPE
| NFS_ATTR_FATTR_MODE
|
6115 NFS_ATTR_FATTR_NLINK
| NFS_ATTR_FATTR_V4_REFERRAL
;
6116 fattr
->mode
= S_IFDIR
| S_IRUGO
| S_IXUGO
;
6120 static int _nfs4_proc_fs_locations(struct rpc_clnt
*client
, struct inode
*dir
,
6121 const struct qstr
*name
,
6122 struct nfs4_fs_locations
*fs_locations
,
6125 struct nfs_server
*server
= NFS_SERVER(dir
);
6127 [0] = FATTR4_WORD0_FSID
| FATTR4_WORD0_FS_LOCATIONS
,
6129 struct nfs4_fs_locations_arg args
= {
6130 .dir_fh
= NFS_FH(dir
),
6135 struct nfs4_fs_locations_res res
= {
6136 .fs_locations
= fs_locations
,
6138 struct rpc_message msg
= {
6139 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FS_LOCATIONS
],
6145 dprintk("%s: start\n", __func__
);
6147 /* Ask for the fileid of the absent filesystem if mounted_on_fileid
6148 * is not supported */
6149 if (NFS_SERVER(dir
)->attr_bitmask
[1] & FATTR4_WORD1_MOUNTED_ON_FILEID
)
6150 bitmask
[1] |= FATTR4_WORD1_MOUNTED_ON_FILEID
;
6152 bitmask
[0] |= FATTR4_WORD0_FILEID
;
6154 nfs_fattr_init(&fs_locations
->fattr
);
6155 fs_locations
->server
= server
;
6156 fs_locations
->nlocations
= 0;
6157 status
= nfs4_call_sync(client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
6158 dprintk("%s: returned status = %d\n", __func__
, status
);
6162 int nfs4_proc_fs_locations(struct rpc_clnt
*client
, struct inode
*dir
,
6163 const struct qstr
*name
,
6164 struct nfs4_fs_locations
*fs_locations
,
6167 struct nfs4_exception exception
= { };
6170 err
= _nfs4_proc_fs_locations(client
, dir
, name
,
6171 fs_locations
, page
);
6172 trace_nfs4_get_fs_locations(dir
, name
, err
);
6173 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
6175 } while (exception
.retry
);
6180 * This operation also signals the server that this client is
6181 * performing migration recovery. The server can stop returning
6182 * NFS4ERR_LEASE_MOVED to this client. A RENEW operation is
6183 * appended to this compound to identify the client ID which is
6184 * performing recovery.
6186 static int _nfs40_proc_get_locations(struct inode
*inode
,
6187 struct nfs4_fs_locations
*locations
,
6188 struct page
*page
, struct rpc_cred
*cred
)
6190 struct nfs_server
*server
= NFS_SERVER(inode
);
6191 struct rpc_clnt
*clnt
= server
->client
;
6193 [0] = FATTR4_WORD0_FSID
| FATTR4_WORD0_FS_LOCATIONS
,
6195 struct nfs4_fs_locations_arg args
= {
6196 .clientid
= server
->nfs_client
->cl_clientid
,
6197 .fh
= NFS_FH(inode
),
6200 .migration
= 1, /* skip LOOKUP */
6201 .renew
= 1, /* append RENEW */
6203 struct nfs4_fs_locations_res res
= {
6204 .fs_locations
= locations
,
6208 struct rpc_message msg
= {
6209 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FS_LOCATIONS
],
6214 unsigned long now
= jiffies
;
6217 nfs_fattr_init(&locations
->fattr
);
6218 locations
->server
= server
;
6219 locations
->nlocations
= 0;
6221 nfs4_init_sequence(&args
.seq_args
, &res
.seq_res
, 0);
6222 nfs4_set_sequence_privileged(&args
.seq_args
);
6223 status
= nfs4_call_sync_sequence(clnt
, server
, &msg
,
6224 &args
.seq_args
, &res
.seq_res
);
6228 renew_lease(server
, now
);
6232 #ifdef CONFIG_NFS_V4_1
6235 * This operation also signals the server that this client is
6236 * performing migration recovery. The server can stop asserting
6237 * SEQ4_STATUS_LEASE_MOVED for this client. The client ID
6238 * performing this operation is identified in the SEQUENCE
6239 * operation in this compound.
6241 * When the client supports GETATTR(fs_locations_info), it can
6242 * be plumbed in here.
6244 static int _nfs41_proc_get_locations(struct inode
*inode
,
6245 struct nfs4_fs_locations
*locations
,
6246 struct page
*page
, struct rpc_cred
*cred
)
6248 struct nfs_server
*server
= NFS_SERVER(inode
);
6249 struct rpc_clnt
*clnt
= server
->client
;
6251 [0] = FATTR4_WORD0_FSID
| FATTR4_WORD0_FS_LOCATIONS
,
6253 struct nfs4_fs_locations_arg args
= {
6254 .fh
= NFS_FH(inode
),
6257 .migration
= 1, /* skip LOOKUP */
6259 struct nfs4_fs_locations_res res
= {
6260 .fs_locations
= locations
,
6263 struct rpc_message msg
= {
6264 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FS_LOCATIONS
],
6271 nfs_fattr_init(&locations
->fattr
);
6272 locations
->server
= server
;
6273 locations
->nlocations
= 0;
6275 nfs4_init_sequence(&args
.seq_args
, &res
.seq_res
, 0);
6276 nfs4_set_sequence_privileged(&args
.seq_args
);
6277 status
= nfs4_call_sync_sequence(clnt
, server
, &msg
,
6278 &args
.seq_args
, &res
.seq_res
);
6279 if (status
== NFS4_OK
&&
6280 res
.seq_res
.sr_status_flags
& SEQ4_STATUS_LEASE_MOVED
)
6281 status
= -NFS4ERR_LEASE_MOVED
;
6285 #endif /* CONFIG_NFS_V4_1 */
6288 * nfs4_proc_get_locations - discover locations for a migrated FSID
6289 * @inode: inode on FSID that is migrating
6290 * @locations: result of query
6292 * @cred: credential to use for this operation
6294 * Returns NFS4_OK on success, a negative NFS4ERR status code if the
6295 * operation failed, or a negative errno if a local error occurred.
6297 * On success, "locations" is filled in, but if the server has
6298 * no locations information, NFS_ATTR_FATTR_V4_LOCATIONS is not
6301 * -NFS4ERR_LEASE_MOVED is returned if the server still has leases
6302 * from this client that require migration recovery.
6304 int nfs4_proc_get_locations(struct inode
*inode
,
6305 struct nfs4_fs_locations
*locations
,
6306 struct page
*page
, struct rpc_cred
*cred
)
6308 struct nfs_server
*server
= NFS_SERVER(inode
);
6309 struct nfs_client
*clp
= server
->nfs_client
;
6310 const struct nfs4_mig_recovery_ops
*ops
=
6311 clp
->cl_mvops
->mig_recovery_ops
;
6312 struct nfs4_exception exception
= { };
6315 dprintk("%s: FSID %llx:%llx on \"%s\"\n", __func__
,
6316 (unsigned long long)server
->fsid
.major
,
6317 (unsigned long long)server
->fsid
.minor
,
6319 nfs_display_fhandle(NFS_FH(inode
), __func__
);
6322 status
= ops
->get_locations(inode
, locations
, page
, cred
);
6323 if (status
!= -NFS4ERR_DELAY
)
6325 nfs4_handle_exception(server
, status
, &exception
);
6326 } while (exception
.retry
);
6331 * This operation also signals the server that this client is
6332 * performing "lease moved" recovery. The server can stop
6333 * returning NFS4ERR_LEASE_MOVED to this client. A RENEW operation
6334 * is appended to this compound to identify the client ID which is
6335 * performing recovery.
6337 static int _nfs40_proc_fsid_present(struct inode
*inode
, struct rpc_cred
*cred
)
6339 struct nfs_server
*server
= NFS_SERVER(inode
);
6340 struct nfs_client
*clp
= NFS_SERVER(inode
)->nfs_client
;
6341 struct rpc_clnt
*clnt
= server
->client
;
6342 struct nfs4_fsid_present_arg args
= {
6343 .fh
= NFS_FH(inode
),
6344 .clientid
= clp
->cl_clientid
,
6345 .renew
= 1, /* append RENEW */
6347 struct nfs4_fsid_present_res res
= {
6350 struct rpc_message msg
= {
6351 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FSID_PRESENT
],
6356 unsigned long now
= jiffies
;
6359 res
.fh
= nfs_alloc_fhandle();
6363 nfs4_init_sequence(&args
.seq_args
, &res
.seq_res
, 0);
6364 nfs4_set_sequence_privileged(&args
.seq_args
);
6365 status
= nfs4_call_sync_sequence(clnt
, server
, &msg
,
6366 &args
.seq_args
, &res
.seq_res
);
6367 nfs_free_fhandle(res
.fh
);
6371 do_renew_lease(clp
, now
);
6375 #ifdef CONFIG_NFS_V4_1
6378 * This operation also signals the server that this client is
6379 * performing "lease moved" recovery. The server can stop asserting
6380 * SEQ4_STATUS_LEASE_MOVED for this client. The client ID performing
6381 * this operation is identified in the SEQUENCE operation in this
6384 static int _nfs41_proc_fsid_present(struct inode
*inode
, struct rpc_cred
*cred
)
6386 struct nfs_server
*server
= NFS_SERVER(inode
);
6387 struct rpc_clnt
*clnt
= server
->client
;
6388 struct nfs4_fsid_present_arg args
= {
6389 .fh
= NFS_FH(inode
),
6391 struct nfs4_fsid_present_res res
= {
6393 struct rpc_message msg
= {
6394 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FSID_PRESENT
],
6401 res
.fh
= nfs_alloc_fhandle();
6405 nfs4_init_sequence(&args
.seq_args
, &res
.seq_res
, 0);
6406 nfs4_set_sequence_privileged(&args
.seq_args
);
6407 status
= nfs4_call_sync_sequence(clnt
, server
, &msg
,
6408 &args
.seq_args
, &res
.seq_res
);
6409 nfs_free_fhandle(res
.fh
);
6410 if (status
== NFS4_OK
&&
6411 res
.seq_res
.sr_status_flags
& SEQ4_STATUS_LEASE_MOVED
)
6412 status
= -NFS4ERR_LEASE_MOVED
;
6416 #endif /* CONFIG_NFS_V4_1 */
6419 * nfs4_proc_fsid_present - Is this FSID present or absent on server?
6420 * @inode: inode on FSID to check
6421 * @cred: credential to use for this operation
6423 * Server indicates whether the FSID is present, moved, or not
6424 * recognized. This operation is necessary to clear a LEASE_MOVED
6425 * condition for this client ID.
6427 * Returns NFS4_OK if the FSID is present on this server,
6428 * -NFS4ERR_MOVED if the FSID is no longer present, a negative
6429 * NFS4ERR code if some error occurred on the server, or a
6430 * negative errno if a local failure occurred.
6432 int nfs4_proc_fsid_present(struct inode
*inode
, struct rpc_cred
*cred
)
6434 struct nfs_server
*server
= NFS_SERVER(inode
);
6435 struct nfs_client
*clp
= server
->nfs_client
;
6436 const struct nfs4_mig_recovery_ops
*ops
=
6437 clp
->cl_mvops
->mig_recovery_ops
;
6438 struct nfs4_exception exception
= { };
6441 dprintk("%s: FSID %llx:%llx on \"%s\"\n", __func__
,
6442 (unsigned long long)server
->fsid
.major
,
6443 (unsigned long long)server
->fsid
.minor
,
6445 nfs_display_fhandle(NFS_FH(inode
), __func__
);
6448 status
= ops
->fsid_present(inode
, cred
);
6449 if (status
!= -NFS4ERR_DELAY
)
6451 nfs4_handle_exception(server
, status
, &exception
);
6452 } while (exception
.retry
);
6457 * If 'use_integrity' is true and the state managment nfs_client
6458 * cl_rpcclient is using krb5i/p, use the integrity protected cl_rpcclient
6459 * and the machine credential as per RFC3530bis and RFC5661 Security
6460 * Considerations sections. Otherwise, just use the user cred with the
6461 * filesystem's rpc_client.
6463 static int _nfs4_proc_secinfo(struct inode
*dir
, const struct qstr
*name
, struct nfs4_secinfo_flavors
*flavors
, bool use_integrity
)
6466 struct nfs4_secinfo_arg args
= {
6467 .dir_fh
= NFS_FH(dir
),
6470 struct nfs4_secinfo_res res
= {
6473 struct rpc_message msg
= {
6474 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SECINFO
],
6478 struct rpc_clnt
*clnt
= NFS_SERVER(dir
)->client
;
6479 struct rpc_cred
*cred
= NULL
;
6481 if (use_integrity
) {
6482 clnt
= NFS_SERVER(dir
)->nfs_client
->cl_rpcclient
;
6483 cred
= nfs4_get_clid_cred(NFS_SERVER(dir
)->nfs_client
);
6484 msg
.rpc_cred
= cred
;
6487 dprintk("NFS call secinfo %s\n", name
->name
);
6489 nfs4_state_protect(NFS_SERVER(dir
)->nfs_client
,
6490 NFS_SP4_MACH_CRED_SECINFO
, &clnt
, &msg
);
6492 status
= nfs4_call_sync(clnt
, NFS_SERVER(dir
), &msg
, &args
.seq_args
,
6494 dprintk("NFS reply secinfo: %d\n", status
);
6502 int nfs4_proc_secinfo(struct inode
*dir
, const struct qstr
*name
,
6503 struct nfs4_secinfo_flavors
*flavors
)
6505 struct nfs4_exception exception
= { };
6508 err
= -NFS4ERR_WRONGSEC
;
6510 /* try to use integrity protection with machine cred */
6511 if (_nfs4_is_integrity_protected(NFS_SERVER(dir
)->nfs_client
))
6512 err
= _nfs4_proc_secinfo(dir
, name
, flavors
, true);
6515 * if unable to use integrity protection, or SECINFO with
6516 * integrity protection returns NFS4ERR_WRONGSEC (which is
6517 * disallowed by spec, but exists in deployed servers) use
6518 * the current filesystem's rpc_client and the user cred.
6520 if (err
== -NFS4ERR_WRONGSEC
)
6521 err
= _nfs4_proc_secinfo(dir
, name
, flavors
, false);
6523 trace_nfs4_secinfo(dir
, name
, err
);
6524 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
6526 } while (exception
.retry
);
6530 #ifdef CONFIG_NFS_V4_1
6532 * Check the exchange flags returned by the server for invalid flags, having
6533 * both PNFS and NON_PNFS flags set, and not having one of NON_PNFS, PNFS, or
6536 static int nfs4_check_cl_exchange_flags(u32 flags
)
6538 if (flags
& ~EXCHGID4_FLAG_MASK_R
)
6540 if ((flags
& EXCHGID4_FLAG_USE_PNFS_MDS
) &&
6541 (flags
& EXCHGID4_FLAG_USE_NON_PNFS
))
6543 if (!(flags
& (EXCHGID4_FLAG_MASK_PNFS
)))
6547 return -NFS4ERR_INVAL
;
6551 nfs41_same_server_scope(struct nfs41_server_scope
*a
,
6552 struct nfs41_server_scope
*b
)
6554 if (a
->server_scope_sz
== b
->server_scope_sz
&&
6555 memcmp(a
->server_scope
, b
->server_scope
, a
->server_scope_sz
) == 0)
6562 * nfs4_proc_bind_conn_to_session()
6564 * The 4.1 client currently uses the same TCP connection for the
6565 * fore and backchannel.
6567 int nfs4_proc_bind_conn_to_session(struct nfs_client
*clp
, struct rpc_cred
*cred
)
6570 struct nfs41_bind_conn_to_session_res res
;
6571 struct rpc_message msg
= {
6573 &nfs4_procedures
[NFSPROC4_CLNT_BIND_CONN_TO_SESSION
],
6579 dprintk("--> %s\n", __func__
);
6581 res
.session
= kzalloc(sizeof(struct nfs4_session
), GFP_NOFS
);
6582 if (unlikely(res
.session
== NULL
)) {
6587 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
6588 trace_nfs4_bind_conn_to_session(clp
, status
);
6590 if (memcmp(res
.session
->sess_id
.data
,
6591 clp
->cl_session
->sess_id
.data
, NFS4_MAX_SESSIONID_LEN
)) {
6592 dprintk("NFS: %s: Session ID mismatch\n", __func__
);
6596 if (res
.dir
!= NFS4_CDFS4_BOTH
) {
6597 dprintk("NFS: %s: Unexpected direction from server\n",
6602 if (res
.use_conn_in_rdma_mode
) {
6603 dprintk("NFS: %s: Server returned RDMA mode = true\n",
6612 dprintk("<-- %s status= %d\n", __func__
, status
);
6617 * Minimum set of SP4_MACH_CRED operations from RFC 5661 in the enforce map
6618 * and operations we'd like to see to enable certain features in the allow map
6620 static const struct nfs41_state_protection nfs4_sp4_mach_cred_request
= {
6621 .how
= SP4_MACH_CRED
,
6622 .enforce
.u
.words
= {
6623 [1] = 1 << (OP_BIND_CONN_TO_SESSION
- 32) |
6624 1 << (OP_EXCHANGE_ID
- 32) |
6625 1 << (OP_CREATE_SESSION
- 32) |
6626 1 << (OP_DESTROY_SESSION
- 32) |
6627 1 << (OP_DESTROY_CLIENTID
- 32)
6630 [0] = 1 << (OP_CLOSE
) |
6633 [1] = 1 << (OP_SECINFO
- 32) |
6634 1 << (OP_SECINFO_NO_NAME
- 32) |
6635 1 << (OP_TEST_STATEID
- 32) |
6636 1 << (OP_FREE_STATEID
- 32) |
6637 1 << (OP_WRITE
- 32)
6642 * Select the state protection mode for client `clp' given the server results
6643 * from exchange_id in `sp'.
6645 * Returns 0 on success, negative errno otherwise.
6647 static int nfs4_sp4_select_mode(struct nfs_client
*clp
,
6648 struct nfs41_state_protection
*sp
)
6650 static const u32 supported_enforce
[NFS4_OP_MAP_NUM_WORDS
] = {
6651 [1] = 1 << (OP_BIND_CONN_TO_SESSION
- 32) |
6652 1 << (OP_EXCHANGE_ID
- 32) |
6653 1 << (OP_CREATE_SESSION
- 32) |
6654 1 << (OP_DESTROY_SESSION
- 32) |
6655 1 << (OP_DESTROY_CLIENTID
- 32)
6659 if (sp
->how
== SP4_MACH_CRED
) {
6660 /* Print state protect result */
6661 dfprintk(MOUNT
, "Server SP4_MACH_CRED support:\n");
6662 for (i
= 0; i
<= LAST_NFS4_OP
; i
++) {
6663 if (test_bit(i
, sp
->enforce
.u
.longs
))
6664 dfprintk(MOUNT
, " enforce op %d\n", i
);
6665 if (test_bit(i
, sp
->allow
.u
.longs
))
6666 dfprintk(MOUNT
, " allow op %d\n", i
);
6669 /* make sure nothing is on enforce list that isn't supported */
6670 for (i
= 0; i
< NFS4_OP_MAP_NUM_WORDS
; i
++) {
6671 if (sp
->enforce
.u
.words
[i
] & ~supported_enforce
[i
]) {
6672 dfprintk(MOUNT
, "sp4_mach_cred: disabled\n");
6678 * Minimal mode - state operations are allowed to use machine
6679 * credential. Note this already happens by default, so the
6680 * client doesn't have to do anything more than the negotiation.
6682 * NOTE: we don't care if EXCHANGE_ID is in the list -
6683 * we're already using the machine cred for exchange_id
6684 * and will never use a different cred.
6686 if (test_bit(OP_BIND_CONN_TO_SESSION
, sp
->enforce
.u
.longs
) &&
6687 test_bit(OP_CREATE_SESSION
, sp
->enforce
.u
.longs
) &&
6688 test_bit(OP_DESTROY_SESSION
, sp
->enforce
.u
.longs
) &&
6689 test_bit(OP_DESTROY_CLIENTID
, sp
->enforce
.u
.longs
)) {
6690 dfprintk(MOUNT
, "sp4_mach_cred:\n");
6691 dfprintk(MOUNT
, " minimal mode enabled\n");
6692 set_bit(NFS_SP4_MACH_CRED_MINIMAL
, &clp
->cl_sp4_flags
);
6694 dfprintk(MOUNT
, "sp4_mach_cred: disabled\n");
6698 if (test_bit(OP_CLOSE
, sp
->allow
.u
.longs
) &&
6699 test_bit(OP_LOCKU
, sp
->allow
.u
.longs
)) {
6700 dfprintk(MOUNT
, " cleanup mode enabled\n");
6701 set_bit(NFS_SP4_MACH_CRED_CLEANUP
, &clp
->cl_sp4_flags
);
6704 if (test_bit(OP_SECINFO
, sp
->allow
.u
.longs
) &&
6705 test_bit(OP_SECINFO_NO_NAME
, sp
->allow
.u
.longs
)) {
6706 dfprintk(MOUNT
, " secinfo mode enabled\n");
6707 set_bit(NFS_SP4_MACH_CRED_SECINFO
, &clp
->cl_sp4_flags
);
6710 if (test_bit(OP_TEST_STATEID
, sp
->allow
.u
.longs
) &&
6711 test_bit(OP_FREE_STATEID
, sp
->allow
.u
.longs
)) {
6712 dfprintk(MOUNT
, " stateid mode enabled\n");
6713 set_bit(NFS_SP4_MACH_CRED_STATEID
, &clp
->cl_sp4_flags
);
6716 if (test_bit(OP_WRITE
, sp
->allow
.u
.longs
)) {
6717 dfprintk(MOUNT
, " write mode enabled\n");
6718 set_bit(NFS_SP4_MACH_CRED_WRITE
, &clp
->cl_sp4_flags
);
6721 if (test_bit(OP_COMMIT
, sp
->allow
.u
.longs
)) {
6722 dfprintk(MOUNT
, " commit mode enabled\n");
6723 set_bit(NFS_SP4_MACH_CRED_COMMIT
, &clp
->cl_sp4_flags
);
6731 * _nfs4_proc_exchange_id()
6733 * Wrapper for EXCHANGE_ID operation.
6735 static int _nfs4_proc_exchange_id(struct nfs_client
*clp
, struct rpc_cred
*cred
,
6738 nfs4_verifier verifier
;
6739 struct nfs41_exchange_id_args args
= {
6740 .verifier
= &verifier
,
6742 #ifdef CONFIG_NFS_V4_1_MIGRATION
6743 .flags
= EXCHGID4_FLAG_SUPP_MOVED_REFER
|
6744 EXCHGID4_FLAG_BIND_PRINC_STATEID
|
6745 EXCHGID4_FLAG_SUPP_MOVED_MIGR
,
6747 .flags
= EXCHGID4_FLAG_SUPP_MOVED_REFER
|
6748 EXCHGID4_FLAG_BIND_PRINC_STATEID
,
6751 struct nfs41_exchange_id_res res
= {
6755 struct rpc_message msg
= {
6756 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_EXCHANGE_ID
],
6762 nfs4_init_boot_verifier(clp
, &verifier
);
6763 args
.id_len
= nfs4_init_uniform_client_string(clp
, args
.id
,
6765 dprintk("NFS call exchange_id auth=%s, '%.*s'\n",
6766 clp
->cl_rpcclient
->cl_auth
->au_ops
->au_name
,
6767 args
.id_len
, args
.id
);
6769 res
.server_owner
= kzalloc(sizeof(struct nfs41_server_owner
),
6771 if (unlikely(res
.server_owner
== NULL
)) {
6776 res
.server_scope
= kzalloc(sizeof(struct nfs41_server_scope
),
6778 if (unlikely(res
.server_scope
== NULL
)) {
6780 goto out_server_owner
;
6783 res
.impl_id
= kzalloc(sizeof(struct nfs41_impl_id
), GFP_NOFS
);
6784 if (unlikely(res
.impl_id
== NULL
)) {
6786 goto out_server_scope
;
6791 args
.state_protect
.how
= SP4_NONE
;
6795 args
.state_protect
= nfs4_sp4_mach_cred_request
;
6802 goto out_server_scope
;
6805 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
6806 trace_nfs4_exchange_id(clp
, status
);
6808 status
= nfs4_check_cl_exchange_flags(res
.flags
);
6811 status
= nfs4_sp4_select_mode(clp
, &res
.state_protect
);
6814 clp
->cl_clientid
= res
.clientid
;
6815 clp
->cl_exchange_flags
= (res
.flags
& ~EXCHGID4_FLAG_CONFIRMED_R
);
6816 if (!(res
.flags
& EXCHGID4_FLAG_CONFIRMED_R
))
6817 clp
->cl_seqid
= res
.seqid
;
6819 kfree(clp
->cl_serverowner
);
6820 clp
->cl_serverowner
= res
.server_owner
;
6821 res
.server_owner
= NULL
;
6823 /* use the most recent implementation id */
6824 kfree(clp
->cl_implid
);
6825 clp
->cl_implid
= res
.impl_id
;
6827 if (clp
->cl_serverscope
!= NULL
&&
6828 !nfs41_same_server_scope(clp
->cl_serverscope
,
6829 res
.server_scope
)) {
6830 dprintk("%s: server_scope mismatch detected\n",
6832 set_bit(NFS4CLNT_SERVER_SCOPE_MISMATCH
, &clp
->cl_state
);
6833 kfree(clp
->cl_serverscope
);
6834 clp
->cl_serverscope
= NULL
;
6837 if (clp
->cl_serverscope
== NULL
) {
6838 clp
->cl_serverscope
= res
.server_scope
;
6845 kfree(res
.server_owner
);
6847 kfree(res
.server_scope
);
6849 if (clp
->cl_implid
!= NULL
)
6850 dprintk("NFS reply exchange_id: Server Implementation ID: "
6851 "domain: %s, name: %s, date: %llu,%u\n",
6852 clp
->cl_implid
->domain
, clp
->cl_implid
->name
,
6853 clp
->cl_implid
->date
.seconds
,
6854 clp
->cl_implid
->date
.nseconds
);
6855 dprintk("NFS reply exchange_id: %d\n", status
);
6860 * nfs4_proc_exchange_id()
6862 * Returns zero, a negative errno, or a negative NFS4ERR status code.
6864 * Since the clientid has expired, all compounds using sessions
6865 * associated with the stale clientid will be returning
6866 * NFS4ERR_BADSESSION in the sequence operation, and will therefore
6867 * be in some phase of session reset.
6869 * Will attempt to negotiate SP4_MACH_CRED if krb5i / krb5p auth is used.
6871 int nfs4_proc_exchange_id(struct nfs_client
*clp
, struct rpc_cred
*cred
)
6873 rpc_authflavor_t authflavor
= clp
->cl_rpcclient
->cl_auth
->au_flavor
;
6876 /* try SP4_MACH_CRED if krb5i/p */
6877 if (authflavor
== RPC_AUTH_GSS_KRB5I
||
6878 authflavor
== RPC_AUTH_GSS_KRB5P
) {
6879 status
= _nfs4_proc_exchange_id(clp
, cred
, SP4_MACH_CRED
);
6885 return _nfs4_proc_exchange_id(clp
, cred
, SP4_NONE
);
6888 static int _nfs4_proc_destroy_clientid(struct nfs_client
*clp
,
6889 struct rpc_cred
*cred
)
6891 struct rpc_message msg
= {
6892 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DESTROY_CLIENTID
],
6898 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
6899 trace_nfs4_destroy_clientid(clp
, status
);
6901 dprintk("NFS: Got error %d from the server %s on "
6902 "DESTROY_CLIENTID.", status
, clp
->cl_hostname
);
6906 static int nfs4_proc_destroy_clientid(struct nfs_client
*clp
,
6907 struct rpc_cred
*cred
)
6912 for (loop
= NFS4_MAX_LOOP_ON_RECOVER
; loop
!= 0; loop
--) {
6913 ret
= _nfs4_proc_destroy_clientid(clp
, cred
);
6915 case -NFS4ERR_DELAY
:
6916 case -NFS4ERR_CLIENTID_BUSY
:
6926 int nfs4_destroy_clientid(struct nfs_client
*clp
)
6928 struct rpc_cred
*cred
;
6931 if (clp
->cl_mvops
->minor_version
< 1)
6933 if (clp
->cl_exchange_flags
== 0)
6935 if (clp
->cl_preserve_clid
)
6937 cred
= nfs4_get_clid_cred(clp
);
6938 ret
= nfs4_proc_destroy_clientid(clp
, cred
);
6943 case -NFS4ERR_STALE_CLIENTID
:
6944 clp
->cl_exchange_flags
= 0;
6950 struct nfs4_get_lease_time_data
{
6951 struct nfs4_get_lease_time_args
*args
;
6952 struct nfs4_get_lease_time_res
*res
;
6953 struct nfs_client
*clp
;
6956 static void nfs4_get_lease_time_prepare(struct rpc_task
*task
,
6959 struct nfs4_get_lease_time_data
*data
=
6960 (struct nfs4_get_lease_time_data
*)calldata
;
6962 dprintk("--> %s\n", __func__
);
6963 /* just setup sequence, do not trigger session recovery
6964 since we're invoked within one */
6965 nfs41_setup_sequence(data
->clp
->cl_session
,
6966 &data
->args
->la_seq_args
,
6967 &data
->res
->lr_seq_res
,
6969 dprintk("<-- %s\n", __func__
);
6973 * Called from nfs4_state_manager thread for session setup, so don't recover
6974 * from sequence operation or clientid errors.
6976 static void nfs4_get_lease_time_done(struct rpc_task
*task
, void *calldata
)
6978 struct nfs4_get_lease_time_data
*data
=
6979 (struct nfs4_get_lease_time_data
*)calldata
;
6981 dprintk("--> %s\n", __func__
);
6982 if (!nfs41_sequence_done(task
, &data
->res
->lr_seq_res
))
6984 switch (task
->tk_status
) {
6985 case -NFS4ERR_DELAY
:
6986 case -NFS4ERR_GRACE
:
6987 dprintk("%s Retry: tk_status %d\n", __func__
, task
->tk_status
);
6988 rpc_delay(task
, NFS4_POLL_RETRY_MIN
);
6989 task
->tk_status
= 0;
6991 case -NFS4ERR_RETRY_UNCACHED_REP
:
6992 rpc_restart_call_prepare(task
);
6995 dprintk("<-- %s\n", __func__
);
6998 static const struct rpc_call_ops nfs4_get_lease_time_ops
= {
6999 .rpc_call_prepare
= nfs4_get_lease_time_prepare
,
7000 .rpc_call_done
= nfs4_get_lease_time_done
,
7003 int nfs4_proc_get_lease_time(struct nfs_client
*clp
, struct nfs_fsinfo
*fsinfo
)
7005 struct rpc_task
*task
;
7006 struct nfs4_get_lease_time_args args
;
7007 struct nfs4_get_lease_time_res res
= {
7008 .lr_fsinfo
= fsinfo
,
7010 struct nfs4_get_lease_time_data data
= {
7015 struct rpc_message msg
= {
7016 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GET_LEASE_TIME
],
7020 struct rpc_task_setup task_setup
= {
7021 .rpc_client
= clp
->cl_rpcclient
,
7022 .rpc_message
= &msg
,
7023 .callback_ops
= &nfs4_get_lease_time_ops
,
7024 .callback_data
= &data
,
7025 .flags
= RPC_TASK_TIMEOUT
,
7029 nfs4_init_sequence(&args
.la_seq_args
, &res
.lr_seq_res
, 0);
7030 nfs4_set_sequence_privileged(&args
.la_seq_args
);
7031 dprintk("--> %s\n", __func__
);
7032 task
= rpc_run_task(&task_setup
);
7035 status
= PTR_ERR(task
);
7037 status
= task
->tk_status
;
7040 dprintk("<-- %s return %d\n", __func__
, status
);
7046 * Initialize the values to be used by the client in CREATE_SESSION
7047 * If nfs4_init_session set the fore channel request and response sizes,
7050 * Set the back channel max_resp_sz_cached to zero to force the client to
7051 * always set csa_cachethis to FALSE because the current implementation
7052 * of the back channel DRC only supports caching the CB_SEQUENCE operation.
7054 static void nfs4_init_channel_attrs(struct nfs41_create_session_args
*args
)
7056 unsigned int max_rqst_sz
, max_resp_sz
;
7058 max_rqst_sz
= NFS_MAX_FILE_IO_SIZE
+ nfs41_maxwrite_overhead
;
7059 max_resp_sz
= NFS_MAX_FILE_IO_SIZE
+ nfs41_maxread_overhead
;
7061 /* Fore channel attributes */
7062 args
->fc_attrs
.max_rqst_sz
= max_rqst_sz
;
7063 args
->fc_attrs
.max_resp_sz
= max_resp_sz
;
7064 args
->fc_attrs
.max_ops
= NFS4_MAX_OPS
;
7065 args
->fc_attrs
.max_reqs
= max_session_slots
;
7067 dprintk("%s: Fore Channel : max_rqst_sz=%u max_resp_sz=%u "
7068 "max_ops=%u max_reqs=%u\n",
7070 args
->fc_attrs
.max_rqst_sz
, args
->fc_attrs
.max_resp_sz
,
7071 args
->fc_attrs
.max_ops
, args
->fc_attrs
.max_reqs
);
7073 /* Back channel attributes */
7074 args
->bc_attrs
.max_rqst_sz
= PAGE_SIZE
;
7075 args
->bc_attrs
.max_resp_sz
= PAGE_SIZE
;
7076 args
->bc_attrs
.max_resp_sz_cached
= 0;
7077 args
->bc_attrs
.max_ops
= NFS4_MAX_BACK_CHANNEL_OPS
;
7078 args
->bc_attrs
.max_reqs
= 1;
7080 dprintk("%s: Back Channel : max_rqst_sz=%u max_resp_sz=%u "
7081 "max_resp_sz_cached=%u max_ops=%u max_reqs=%u\n",
7083 args
->bc_attrs
.max_rqst_sz
, args
->bc_attrs
.max_resp_sz
,
7084 args
->bc_attrs
.max_resp_sz_cached
, args
->bc_attrs
.max_ops
,
7085 args
->bc_attrs
.max_reqs
);
7088 static int nfs4_verify_fore_channel_attrs(struct nfs41_create_session_args
*args
, struct nfs4_session
*session
)
7090 struct nfs4_channel_attrs
*sent
= &args
->fc_attrs
;
7091 struct nfs4_channel_attrs
*rcvd
= &session
->fc_attrs
;
7093 if (rcvd
->max_resp_sz
> sent
->max_resp_sz
)
7096 * Our requested max_ops is the minimum we need; we're not
7097 * prepared to break up compounds into smaller pieces than that.
7098 * So, no point even trying to continue if the server won't
7101 if (rcvd
->max_ops
< sent
->max_ops
)
7103 if (rcvd
->max_reqs
== 0)
7105 if (rcvd
->max_reqs
> NFS4_MAX_SLOT_TABLE
)
7106 rcvd
->max_reqs
= NFS4_MAX_SLOT_TABLE
;
7110 static int nfs4_verify_back_channel_attrs(struct nfs41_create_session_args
*args
, struct nfs4_session
*session
)
7112 struct nfs4_channel_attrs
*sent
= &args
->bc_attrs
;
7113 struct nfs4_channel_attrs
*rcvd
= &session
->bc_attrs
;
7115 if (rcvd
->max_rqst_sz
> sent
->max_rqst_sz
)
7117 if (rcvd
->max_resp_sz
< sent
->max_resp_sz
)
7119 if (rcvd
->max_resp_sz_cached
> sent
->max_resp_sz_cached
)
7121 /* These would render the backchannel useless: */
7122 if (rcvd
->max_ops
!= sent
->max_ops
)
7124 if (rcvd
->max_reqs
!= sent
->max_reqs
)
7129 static int nfs4_verify_channel_attrs(struct nfs41_create_session_args
*args
,
7130 struct nfs4_session
*session
)
7134 ret
= nfs4_verify_fore_channel_attrs(args
, session
);
7137 return nfs4_verify_back_channel_attrs(args
, session
);
7140 static int _nfs4_proc_create_session(struct nfs_client
*clp
,
7141 struct rpc_cred
*cred
)
7143 struct nfs4_session
*session
= clp
->cl_session
;
7144 struct nfs41_create_session_args args
= {
7146 .cb_program
= NFS4_CALLBACK
,
7148 struct nfs41_create_session_res res
= {
7151 struct rpc_message msg
= {
7152 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CREATE_SESSION
],
7159 nfs4_init_channel_attrs(&args
);
7160 args
.flags
= (SESSION4_PERSIST
| SESSION4_BACK_CHAN
);
7162 status
= rpc_call_sync(session
->clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
7163 trace_nfs4_create_session(clp
, status
);
7166 /* Verify the session's negotiated channel_attrs values */
7167 status
= nfs4_verify_channel_attrs(&args
, session
);
7168 /* Increment the clientid slot sequence id */
7176 * Issues a CREATE_SESSION operation to the server.
7177 * It is the responsibility of the caller to verify the session is
7178 * expired before calling this routine.
7180 int nfs4_proc_create_session(struct nfs_client
*clp
, struct rpc_cred
*cred
)
7184 struct nfs4_session
*session
= clp
->cl_session
;
7186 dprintk("--> %s clp=%p session=%p\n", __func__
, clp
, session
);
7188 status
= _nfs4_proc_create_session(clp
, cred
);
7192 /* Init or reset the session slot tables */
7193 status
= nfs4_setup_session_slot_tables(session
);
7194 dprintk("slot table setup returned %d\n", status
);
7198 ptr
= (unsigned *)&session
->sess_id
.data
[0];
7199 dprintk("%s client>seqid %d sessionid %u:%u:%u:%u\n", __func__
,
7200 clp
->cl_seqid
, ptr
[0], ptr
[1], ptr
[2], ptr
[3]);
7202 dprintk("<-- %s\n", __func__
);
7207 * Issue the over-the-wire RPC DESTROY_SESSION.
7208 * The caller must serialize access to this routine.
7210 int nfs4_proc_destroy_session(struct nfs4_session
*session
,
7211 struct rpc_cred
*cred
)
7213 struct rpc_message msg
= {
7214 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DESTROY_SESSION
],
7215 .rpc_argp
= session
,
7220 dprintk("--> nfs4_proc_destroy_session\n");
7222 /* session is still being setup */
7223 if (session
->clp
->cl_cons_state
!= NFS_CS_READY
)
7226 status
= rpc_call_sync(session
->clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
7227 trace_nfs4_destroy_session(session
->clp
, status
);
7230 dprintk("NFS: Got error %d from the server on DESTROY_SESSION. "
7231 "Session has been destroyed regardless...\n", status
);
7233 dprintk("<-- nfs4_proc_destroy_session\n");
7238 * Renew the cl_session lease.
7240 struct nfs4_sequence_data
{
7241 struct nfs_client
*clp
;
7242 struct nfs4_sequence_args args
;
7243 struct nfs4_sequence_res res
;
7246 static void nfs41_sequence_release(void *data
)
7248 struct nfs4_sequence_data
*calldata
= data
;
7249 struct nfs_client
*clp
= calldata
->clp
;
7251 if (atomic_read(&clp
->cl_count
) > 1)
7252 nfs4_schedule_state_renewal(clp
);
7253 nfs_put_client(clp
);
7257 static int nfs41_sequence_handle_errors(struct rpc_task
*task
, struct nfs_client
*clp
)
7259 switch(task
->tk_status
) {
7260 case -NFS4ERR_DELAY
:
7261 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
7264 nfs4_schedule_lease_recovery(clp
);
7269 static void nfs41_sequence_call_done(struct rpc_task
*task
, void *data
)
7271 struct nfs4_sequence_data
*calldata
= data
;
7272 struct nfs_client
*clp
= calldata
->clp
;
7274 if (!nfs41_sequence_done(task
, task
->tk_msg
.rpc_resp
))
7277 trace_nfs4_sequence(clp
, task
->tk_status
);
7278 if (task
->tk_status
< 0) {
7279 dprintk("%s ERROR %d\n", __func__
, task
->tk_status
);
7280 if (atomic_read(&clp
->cl_count
) == 1)
7283 if (nfs41_sequence_handle_errors(task
, clp
) == -EAGAIN
) {
7284 rpc_restart_call_prepare(task
);
7288 dprintk("%s rpc_cred %p\n", __func__
, task
->tk_msg
.rpc_cred
);
7290 dprintk("<-- %s\n", __func__
);
7293 static void nfs41_sequence_prepare(struct rpc_task
*task
, void *data
)
7295 struct nfs4_sequence_data
*calldata
= data
;
7296 struct nfs_client
*clp
= calldata
->clp
;
7297 struct nfs4_sequence_args
*args
;
7298 struct nfs4_sequence_res
*res
;
7300 args
= task
->tk_msg
.rpc_argp
;
7301 res
= task
->tk_msg
.rpc_resp
;
7303 nfs41_setup_sequence(clp
->cl_session
, args
, res
, task
);
7306 static const struct rpc_call_ops nfs41_sequence_ops
= {
7307 .rpc_call_done
= nfs41_sequence_call_done
,
7308 .rpc_call_prepare
= nfs41_sequence_prepare
,
7309 .rpc_release
= nfs41_sequence_release
,
7312 static struct rpc_task
*_nfs41_proc_sequence(struct nfs_client
*clp
,
7313 struct rpc_cred
*cred
,
7316 struct nfs4_sequence_data
*calldata
;
7317 struct rpc_message msg
= {
7318 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SEQUENCE
],
7321 struct rpc_task_setup task_setup_data
= {
7322 .rpc_client
= clp
->cl_rpcclient
,
7323 .rpc_message
= &msg
,
7324 .callback_ops
= &nfs41_sequence_ops
,
7325 .flags
= RPC_TASK_ASYNC
| RPC_TASK_TIMEOUT
,
7328 if (!atomic_inc_not_zero(&clp
->cl_count
))
7329 return ERR_PTR(-EIO
);
7330 calldata
= kzalloc(sizeof(*calldata
), GFP_NOFS
);
7331 if (calldata
== NULL
) {
7332 nfs_put_client(clp
);
7333 return ERR_PTR(-ENOMEM
);
7335 nfs4_init_sequence(&calldata
->args
, &calldata
->res
, 0);
7337 nfs4_set_sequence_privileged(&calldata
->args
);
7338 msg
.rpc_argp
= &calldata
->args
;
7339 msg
.rpc_resp
= &calldata
->res
;
7340 calldata
->clp
= clp
;
7341 task_setup_data
.callback_data
= calldata
;
7343 return rpc_run_task(&task_setup_data
);
7346 static int nfs41_proc_async_sequence(struct nfs_client
*clp
, struct rpc_cred
*cred
, unsigned renew_flags
)
7348 struct rpc_task
*task
;
7351 if ((renew_flags
& NFS4_RENEW_TIMEOUT
) == 0)
7353 task
= _nfs41_proc_sequence(clp
, cred
, false);
7355 ret
= PTR_ERR(task
);
7357 rpc_put_task_async(task
);
7358 dprintk("<-- %s status=%d\n", __func__
, ret
);
7362 static int nfs4_proc_sequence(struct nfs_client
*clp
, struct rpc_cred
*cred
)
7364 struct rpc_task
*task
;
7367 task
= _nfs41_proc_sequence(clp
, cred
, true);
7369 ret
= PTR_ERR(task
);
7372 ret
= rpc_wait_for_completion_task(task
);
7374 struct nfs4_sequence_res
*res
= task
->tk_msg
.rpc_resp
;
7376 if (task
->tk_status
== 0)
7377 nfs41_handle_sequence_flag_errors(clp
, res
->sr_status_flags
);
7378 ret
= task
->tk_status
;
7382 dprintk("<-- %s status=%d\n", __func__
, ret
);
7386 struct nfs4_reclaim_complete_data
{
7387 struct nfs_client
*clp
;
7388 struct nfs41_reclaim_complete_args arg
;
7389 struct nfs41_reclaim_complete_res res
;
7392 static void nfs4_reclaim_complete_prepare(struct rpc_task
*task
, void *data
)
7394 struct nfs4_reclaim_complete_data
*calldata
= data
;
7396 nfs41_setup_sequence(calldata
->clp
->cl_session
,
7397 &calldata
->arg
.seq_args
,
7398 &calldata
->res
.seq_res
,
7402 static int nfs41_reclaim_complete_handle_errors(struct rpc_task
*task
, struct nfs_client
*clp
)
7404 switch(task
->tk_status
) {
7406 case -NFS4ERR_COMPLETE_ALREADY
:
7407 case -NFS4ERR_WRONG_CRED
: /* What to do here? */
7409 case -NFS4ERR_DELAY
:
7410 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
7412 case -NFS4ERR_RETRY_UNCACHED_REP
:
7415 nfs4_schedule_lease_recovery(clp
);
7420 static void nfs4_reclaim_complete_done(struct rpc_task
*task
, void *data
)
7422 struct nfs4_reclaim_complete_data
*calldata
= data
;
7423 struct nfs_client
*clp
= calldata
->clp
;
7424 struct nfs4_sequence_res
*res
= &calldata
->res
.seq_res
;
7426 dprintk("--> %s\n", __func__
);
7427 if (!nfs41_sequence_done(task
, res
))
7430 trace_nfs4_reclaim_complete(clp
, task
->tk_status
);
7431 if (nfs41_reclaim_complete_handle_errors(task
, clp
) == -EAGAIN
) {
7432 rpc_restart_call_prepare(task
);
7435 dprintk("<-- %s\n", __func__
);
7438 static void nfs4_free_reclaim_complete_data(void *data
)
7440 struct nfs4_reclaim_complete_data
*calldata
= data
;
7445 static const struct rpc_call_ops nfs4_reclaim_complete_call_ops
= {
7446 .rpc_call_prepare
= nfs4_reclaim_complete_prepare
,
7447 .rpc_call_done
= nfs4_reclaim_complete_done
,
7448 .rpc_release
= nfs4_free_reclaim_complete_data
,
7452 * Issue a global reclaim complete.
7454 static int nfs41_proc_reclaim_complete(struct nfs_client
*clp
,
7455 struct rpc_cred
*cred
)
7457 struct nfs4_reclaim_complete_data
*calldata
;
7458 struct rpc_task
*task
;
7459 struct rpc_message msg
= {
7460 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RECLAIM_COMPLETE
],
7463 struct rpc_task_setup task_setup_data
= {
7464 .rpc_client
= clp
->cl_rpcclient
,
7465 .rpc_message
= &msg
,
7466 .callback_ops
= &nfs4_reclaim_complete_call_ops
,
7467 .flags
= RPC_TASK_ASYNC
,
7469 int status
= -ENOMEM
;
7471 dprintk("--> %s\n", __func__
);
7472 calldata
= kzalloc(sizeof(*calldata
), GFP_NOFS
);
7473 if (calldata
== NULL
)
7475 calldata
->clp
= clp
;
7476 calldata
->arg
.one_fs
= 0;
7478 nfs4_init_sequence(&calldata
->arg
.seq_args
, &calldata
->res
.seq_res
, 0);
7479 nfs4_set_sequence_privileged(&calldata
->arg
.seq_args
);
7480 msg
.rpc_argp
= &calldata
->arg
;
7481 msg
.rpc_resp
= &calldata
->res
;
7482 task_setup_data
.callback_data
= calldata
;
7483 task
= rpc_run_task(&task_setup_data
);
7485 status
= PTR_ERR(task
);
7488 status
= nfs4_wait_for_completion_rpc_task(task
);
7490 status
= task
->tk_status
;
7494 dprintk("<-- %s status=%d\n", __func__
, status
);
7499 nfs4_layoutget_prepare(struct rpc_task
*task
, void *calldata
)
7501 struct nfs4_layoutget
*lgp
= calldata
;
7502 struct nfs_server
*server
= NFS_SERVER(lgp
->args
.inode
);
7503 struct nfs4_session
*session
= nfs4_get_session(server
);
7505 dprintk("--> %s\n", __func__
);
7506 /* Note the is a race here, where a CB_LAYOUTRECALL can come in
7507 * right now covering the LAYOUTGET we are about to send.
7508 * However, that is not so catastrophic, and there seems
7509 * to be no way to prevent it completely.
7511 if (nfs41_setup_sequence(session
, &lgp
->args
.seq_args
,
7512 &lgp
->res
.seq_res
, task
))
7514 if (pnfs_choose_layoutget_stateid(&lgp
->args
.stateid
,
7515 NFS_I(lgp
->args
.inode
)->layout
,
7516 lgp
->args
.ctx
->state
)) {
7517 rpc_exit(task
, NFS4_OK
);
7521 static void nfs4_layoutget_done(struct rpc_task
*task
, void *calldata
)
7523 struct nfs4_layoutget
*lgp
= calldata
;
7524 struct inode
*inode
= lgp
->args
.inode
;
7525 struct nfs_server
*server
= NFS_SERVER(inode
);
7526 struct pnfs_layout_hdr
*lo
;
7527 struct nfs4_state
*state
= NULL
;
7528 unsigned long timeo
, now
, giveup
;
7530 dprintk("--> %s tk_status => %d\n", __func__
, -task
->tk_status
);
7532 if (!nfs41_sequence_done(task
, &lgp
->res
.seq_res
))
7535 switch (task
->tk_status
) {
7539 * NFS4ERR_LAYOUTTRYLATER is a conflict with another client
7540 * (or clients) writing to the same RAID stripe
7542 case -NFS4ERR_LAYOUTTRYLATER
:
7544 * NFS4ERR_RECALLCONFLICT is when conflict with self (must recall
7545 * existing layout before getting a new one).
7547 case -NFS4ERR_RECALLCONFLICT
:
7548 timeo
= rpc_get_timeout(task
->tk_client
);
7549 giveup
= lgp
->args
.timestamp
+ timeo
;
7551 if (time_after(giveup
, now
)) {
7552 unsigned long delay
;
7555 * - Not less then NFS4_POLL_RETRY_MIN.
7556 * - One last time a jiffie before we give up
7557 * - exponential backoff (time_now minus start_attempt)
7559 delay
= max_t(unsigned long, NFS4_POLL_RETRY_MIN
,
7560 min((giveup
- now
- 1),
7561 now
- lgp
->args
.timestamp
));
7563 dprintk("%s: NFS4ERR_RECALLCONFLICT waiting %lu\n",
7565 rpc_delay(task
, delay
);
7566 task
->tk_status
= 0;
7567 rpc_restart_call_prepare(task
);
7568 goto out
; /* Do not call nfs4_async_handle_error() */
7571 case -NFS4ERR_EXPIRED
:
7572 case -NFS4ERR_BAD_STATEID
:
7573 spin_lock(&inode
->i_lock
);
7574 lo
= NFS_I(inode
)->layout
;
7575 if (!lo
|| list_empty(&lo
->plh_segs
)) {
7576 spin_unlock(&inode
->i_lock
);
7577 /* If the open stateid was bad, then recover it. */
7578 state
= lgp
->args
.ctx
->state
;
7582 pnfs_mark_matching_lsegs_invalid(lo
, &head
, NULL
);
7583 spin_unlock(&inode
->i_lock
);
7584 /* Mark the bad layout state as invalid, then
7585 * retry using the open stateid. */
7586 pnfs_free_lseg_list(&head
);
7589 if (nfs4_async_handle_error(task
, server
, state
) == -EAGAIN
)
7590 rpc_restart_call_prepare(task
);
7592 dprintk("<-- %s\n", __func__
);
7595 static size_t max_response_pages(struct nfs_server
*server
)
7597 u32 max_resp_sz
= server
->nfs_client
->cl_session
->fc_attrs
.max_resp_sz
;
7598 return nfs_page_array_len(0, max_resp_sz
);
7601 static void nfs4_free_pages(struct page
**pages
, size_t size
)
7608 for (i
= 0; i
< size
; i
++) {
7611 __free_page(pages
[i
]);
7616 static struct page
**nfs4_alloc_pages(size_t size
, gfp_t gfp_flags
)
7618 struct page
**pages
;
7621 pages
= kcalloc(size
, sizeof(struct page
*), gfp_flags
);
7623 dprintk("%s: can't alloc array of %zu pages\n", __func__
, size
);
7627 for (i
= 0; i
< size
; i
++) {
7628 pages
[i
] = alloc_page(gfp_flags
);
7630 dprintk("%s: failed to allocate page\n", __func__
);
7631 nfs4_free_pages(pages
, size
);
7639 static void nfs4_layoutget_release(void *calldata
)
7641 struct nfs4_layoutget
*lgp
= calldata
;
7642 struct inode
*inode
= lgp
->args
.inode
;
7643 struct nfs_server
*server
= NFS_SERVER(inode
);
7644 size_t max_pages
= max_response_pages(server
);
7646 dprintk("--> %s\n", __func__
);
7647 nfs4_free_pages(lgp
->args
.layout
.pages
, max_pages
);
7648 pnfs_put_layout_hdr(NFS_I(inode
)->layout
);
7649 put_nfs_open_context(lgp
->args
.ctx
);
7651 dprintk("<-- %s\n", __func__
);
7654 static const struct rpc_call_ops nfs4_layoutget_call_ops
= {
7655 .rpc_call_prepare
= nfs4_layoutget_prepare
,
7656 .rpc_call_done
= nfs4_layoutget_done
,
7657 .rpc_release
= nfs4_layoutget_release
,
7660 struct pnfs_layout_segment
*
7661 nfs4_proc_layoutget(struct nfs4_layoutget
*lgp
, gfp_t gfp_flags
)
7663 struct inode
*inode
= lgp
->args
.inode
;
7664 struct nfs_server
*server
= NFS_SERVER(inode
);
7665 size_t max_pages
= max_response_pages(server
);
7666 struct rpc_task
*task
;
7667 struct rpc_message msg
= {
7668 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LAYOUTGET
],
7669 .rpc_argp
= &lgp
->args
,
7670 .rpc_resp
= &lgp
->res
,
7671 .rpc_cred
= lgp
->cred
,
7673 struct rpc_task_setup task_setup_data
= {
7674 .rpc_client
= server
->client
,
7675 .rpc_message
= &msg
,
7676 .callback_ops
= &nfs4_layoutget_call_ops
,
7677 .callback_data
= lgp
,
7678 .flags
= RPC_TASK_ASYNC
,
7680 struct pnfs_layout_segment
*lseg
= NULL
;
7683 dprintk("--> %s\n", __func__
);
7685 lgp
->args
.layout
.pages
= nfs4_alloc_pages(max_pages
, gfp_flags
);
7686 if (!lgp
->args
.layout
.pages
) {
7687 nfs4_layoutget_release(lgp
);
7688 return ERR_PTR(-ENOMEM
);
7690 lgp
->args
.layout
.pglen
= max_pages
* PAGE_SIZE
;
7691 lgp
->args
.timestamp
= jiffies
;
7693 lgp
->res
.layoutp
= &lgp
->args
.layout
;
7694 lgp
->res
.seq_res
.sr_slot
= NULL
;
7695 nfs4_init_sequence(&lgp
->args
.seq_args
, &lgp
->res
.seq_res
, 0);
7697 /* nfs4_layoutget_release calls pnfs_put_layout_hdr */
7698 pnfs_get_layout_hdr(NFS_I(inode
)->layout
);
7700 task
= rpc_run_task(&task_setup_data
);
7702 return ERR_CAST(task
);
7703 status
= nfs4_wait_for_completion_rpc_task(task
);
7705 status
= task
->tk_status
;
7706 trace_nfs4_layoutget(lgp
->args
.ctx
,
7710 /* if layoutp->len is 0, nfs4_layoutget_prepare called rpc_exit */
7711 if (status
== 0 && lgp
->res
.layoutp
->len
)
7712 lseg
= pnfs_layout_process(lgp
);
7714 dprintk("<-- %s status=%d\n", __func__
, status
);
7716 return ERR_PTR(status
);
7721 nfs4_layoutreturn_prepare(struct rpc_task
*task
, void *calldata
)
7723 struct nfs4_layoutreturn
*lrp
= calldata
;
7725 dprintk("--> %s\n", __func__
);
7726 nfs41_setup_sequence(lrp
->clp
->cl_session
,
7727 &lrp
->args
.seq_args
,
7732 static void nfs4_layoutreturn_done(struct rpc_task
*task
, void *calldata
)
7734 struct nfs4_layoutreturn
*lrp
= calldata
;
7735 struct nfs_server
*server
;
7737 dprintk("--> %s\n", __func__
);
7739 if (!nfs41_sequence_done(task
, &lrp
->res
.seq_res
))
7742 server
= NFS_SERVER(lrp
->args
.inode
);
7743 switch (task
->tk_status
) {
7745 task
->tk_status
= 0;
7748 case -NFS4ERR_DELAY
:
7749 if (nfs4_async_handle_error(task
, server
, NULL
) != -EAGAIN
)
7751 rpc_restart_call_prepare(task
);
7754 dprintk("<-- %s\n", __func__
);
7757 static void nfs4_layoutreturn_release(void *calldata
)
7759 struct nfs4_layoutreturn
*lrp
= calldata
;
7760 struct pnfs_layout_hdr
*lo
= lrp
->args
.layout
;
7762 dprintk("--> %s\n", __func__
);
7763 spin_lock(&lo
->plh_inode
->i_lock
);
7764 if (lrp
->res
.lrs_present
)
7765 pnfs_set_layout_stateid(lo
, &lrp
->res
.stateid
, true);
7766 lo
->plh_block_lgets
--;
7767 spin_unlock(&lo
->plh_inode
->i_lock
);
7768 pnfs_put_layout_hdr(lrp
->args
.layout
);
7770 dprintk("<-- %s\n", __func__
);
7773 static const struct rpc_call_ops nfs4_layoutreturn_call_ops
= {
7774 .rpc_call_prepare
= nfs4_layoutreturn_prepare
,
7775 .rpc_call_done
= nfs4_layoutreturn_done
,
7776 .rpc_release
= nfs4_layoutreturn_release
,
7779 int nfs4_proc_layoutreturn(struct nfs4_layoutreturn
*lrp
)
7781 struct rpc_task
*task
;
7782 struct rpc_message msg
= {
7783 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LAYOUTRETURN
],
7784 .rpc_argp
= &lrp
->args
,
7785 .rpc_resp
= &lrp
->res
,
7786 .rpc_cred
= lrp
->cred
,
7788 struct rpc_task_setup task_setup_data
= {
7789 .rpc_client
= NFS_SERVER(lrp
->args
.inode
)->client
,
7790 .rpc_message
= &msg
,
7791 .callback_ops
= &nfs4_layoutreturn_call_ops
,
7792 .callback_data
= lrp
,
7796 dprintk("--> %s\n", __func__
);
7797 nfs4_init_sequence(&lrp
->args
.seq_args
, &lrp
->res
.seq_res
, 1);
7798 task
= rpc_run_task(&task_setup_data
);
7800 return PTR_ERR(task
);
7801 status
= task
->tk_status
;
7802 trace_nfs4_layoutreturn(lrp
->args
.inode
, status
);
7803 dprintk("<-- %s status=%d\n", __func__
, status
);
7809 * Retrieve the list of Data Server devices from the MDS.
7811 static int _nfs4_getdevicelist(struct nfs_server
*server
,
7812 const struct nfs_fh
*fh
,
7813 struct pnfs_devicelist
*devlist
)
7815 struct nfs4_getdevicelist_args args
= {
7817 .layoutclass
= server
->pnfs_curr_ld
->id
,
7819 struct nfs4_getdevicelist_res res
= {
7822 struct rpc_message msg
= {
7823 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETDEVICELIST
],
7829 dprintk("--> %s\n", __func__
);
7830 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
,
7832 dprintk("<-- %s status=%d\n", __func__
, status
);
7836 int nfs4_proc_getdevicelist(struct nfs_server
*server
,
7837 const struct nfs_fh
*fh
,
7838 struct pnfs_devicelist
*devlist
)
7840 struct nfs4_exception exception
= { };
7844 err
= nfs4_handle_exception(server
,
7845 _nfs4_getdevicelist(server
, fh
, devlist
),
7847 } while (exception
.retry
);
7849 dprintk("%s: err=%d, num_devs=%u\n", __func__
,
7850 err
, devlist
->num_devs
);
7854 EXPORT_SYMBOL_GPL(nfs4_proc_getdevicelist
);
7857 _nfs4_proc_getdeviceinfo(struct nfs_server
*server
,
7858 struct pnfs_device
*pdev
,
7859 struct rpc_cred
*cred
)
7861 struct nfs4_getdeviceinfo_args args
= {
7864 struct nfs4_getdeviceinfo_res res
= {
7867 struct rpc_message msg
= {
7868 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETDEVICEINFO
],
7875 dprintk("--> %s\n", __func__
);
7876 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
7877 dprintk("<-- %s status=%d\n", __func__
, status
);
7882 int nfs4_proc_getdeviceinfo(struct nfs_server
*server
,
7883 struct pnfs_device
*pdev
,
7884 struct rpc_cred
*cred
)
7886 struct nfs4_exception exception
= { };
7890 err
= nfs4_handle_exception(server
,
7891 _nfs4_proc_getdeviceinfo(server
, pdev
, cred
),
7893 } while (exception
.retry
);
7896 EXPORT_SYMBOL_GPL(nfs4_proc_getdeviceinfo
);
7898 static void nfs4_layoutcommit_prepare(struct rpc_task
*task
, void *calldata
)
7900 struct nfs4_layoutcommit_data
*data
= calldata
;
7901 struct nfs_server
*server
= NFS_SERVER(data
->args
.inode
);
7902 struct nfs4_session
*session
= nfs4_get_session(server
);
7904 nfs41_setup_sequence(session
,
7905 &data
->args
.seq_args
,
7911 nfs4_layoutcommit_done(struct rpc_task
*task
, void *calldata
)
7913 struct nfs4_layoutcommit_data
*data
= calldata
;
7914 struct nfs_server
*server
= NFS_SERVER(data
->args
.inode
);
7916 if (!nfs41_sequence_done(task
, &data
->res
.seq_res
))
7919 switch (task
->tk_status
) { /* Just ignore these failures */
7920 case -NFS4ERR_DELEG_REVOKED
: /* layout was recalled */
7921 case -NFS4ERR_BADIOMODE
: /* no IOMODE_RW layout for range */
7922 case -NFS4ERR_BADLAYOUT
: /* no layout */
7923 case -NFS4ERR_GRACE
: /* loca_recalim always false */
7924 task
->tk_status
= 0;
7928 if (nfs4_async_handle_error(task
, server
, NULL
) == -EAGAIN
) {
7929 rpc_restart_call_prepare(task
);
7935 static void nfs4_layoutcommit_release(void *calldata
)
7937 struct nfs4_layoutcommit_data
*data
= calldata
;
7939 pnfs_cleanup_layoutcommit(data
);
7940 nfs_post_op_update_inode_force_wcc(data
->args
.inode
,
7942 put_rpccred(data
->cred
);
7946 static const struct rpc_call_ops nfs4_layoutcommit_ops
= {
7947 .rpc_call_prepare
= nfs4_layoutcommit_prepare
,
7948 .rpc_call_done
= nfs4_layoutcommit_done
,
7949 .rpc_release
= nfs4_layoutcommit_release
,
7953 nfs4_proc_layoutcommit(struct nfs4_layoutcommit_data
*data
, bool sync
)
7955 struct rpc_message msg
= {
7956 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LAYOUTCOMMIT
],
7957 .rpc_argp
= &data
->args
,
7958 .rpc_resp
= &data
->res
,
7959 .rpc_cred
= data
->cred
,
7961 struct rpc_task_setup task_setup_data
= {
7962 .task
= &data
->task
,
7963 .rpc_client
= NFS_CLIENT(data
->args
.inode
),
7964 .rpc_message
= &msg
,
7965 .callback_ops
= &nfs4_layoutcommit_ops
,
7966 .callback_data
= data
,
7967 .flags
= RPC_TASK_ASYNC
,
7969 struct rpc_task
*task
;
7972 dprintk("NFS: %4d initiating layoutcommit call. sync %d "
7973 "lbw: %llu inode %lu\n",
7974 data
->task
.tk_pid
, sync
,
7975 data
->args
.lastbytewritten
,
7976 data
->args
.inode
->i_ino
);
7978 nfs4_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
7979 task
= rpc_run_task(&task_setup_data
);
7981 return PTR_ERR(task
);
7984 status
= nfs4_wait_for_completion_rpc_task(task
);
7987 status
= task
->tk_status
;
7988 trace_nfs4_layoutcommit(data
->args
.inode
, status
);
7990 dprintk("%s: status %d\n", __func__
, status
);
7996 * Use the state managment nfs_client cl_rpcclient, which uses krb5i (if
7997 * possible) as per RFC3530bis and RFC5661 Security Considerations sections
8000 _nfs41_proc_secinfo_no_name(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
8001 struct nfs_fsinfo
*info
,
8002 struct nfs4_secinfo_flavors
*flavors
, bool use_integrity
)
8004 struct nfs41_secinfo_no_name_args args
= {
8005 .style
= SECINFO_STYLE_CURRENT_FH
,
8007 struct nfs4_secinfo_res res
= {
8010 struct rpc_message msg
= {
8011 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SECINFO_NO_NAME
],
8015 struct rpc_clnt
*clnt
= server
->client
;
8016 struct rpc_cred
*cred
= NULL
;
8019 if (use_integrity
) {
8020 clnt
= server
->nfs_client
->cl_rpcclient
;
8021 cred
= nfs4_get_clid_cred(server
->nfs_client
);
8022 msg
.rpc_cred
= cred
;
8025 dprintk("--> %s\n", __func__
);
8026 status
= nfs4_call_sync(clnt
, server
, &msg
, &args
.seq_args
,
8028 dprintk("<-- %s status=%d\n", __func__
, status
);
8037 nfs41_proc_secinfo_no_name(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
8038 struct nfs_fsinfo
*info
, struct nfs4_secinfo_flavors
*flavors
)
8040 struct nfs4_exception exception
= { };
8043 /* first try using integrity protection */
8044 err
= -NFS4ERR_WRONGSEC
;
8046 /* try to use integrity protection with machine cred */
8047 if (_nfs4_is_integrity_protected(server
->nfs_client
))
8048 err
= _nfs41_proc_secinfo_no_name(server
, fhandle
, info
,
8052 * if unable to use integrity protection, or SECINFO with
8053 * integrity protection returns NFS4ERR_WRONGSEC (which is
8054 * disallowed by spec, but exists in deployed servers) use
8055 * the current filesystem's rpc_client and the user cred.
8057 if (err
== -NFS4ERR_WRONGSEC
)
8058 err
= _nfs41_proc_secinfo_no_name(server
, fhandle
, info
,
8063 case -NFS4ERR_WRONGSEC
:
8067 err
= nfs4_handle_exception(server
, err
, &exception
);
8069 } while (exception
.retry
);
8075 nfs41_find_root_sec(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
8076 struct nfs_fsinfo
*info
)
8080 rpc_authflavor_t flavor
= RPC_AUTH_MAXFLAVOR
;
8081 struct nfs4_secinfo_flavors
*flavors
;
8082 struct nfs4_secinfo4
*secinfo
;
8085 page
= alloc_page(GFP_KERNEL
);
8091 flavors
= page_address(page
);
8092 err
= nfs41_proc_secinfo_no_name(server
, fhandle
, info
, flavors
);
8095 * Fall back on "guess and check" method if
8096 * the server doesn't support SECINFO_NO_NAME
8098 if (err
== -NFS4ERR_WRONGSEC
|| err
== -ENOTSUPP
) {
8099 err
= nfs4_find_root_sec(server
, fhandle
, info
);
8105 for (i
= 0; i
< flavors
->num_flavors
; i
++) {
8106 secinfo
= &flavors
->flavors
[i
];
8108 switch (secinfo
->flavor
) {
8112 flavor
= rpcauth_get_pseudoflavor(secinfo
->flavor
,
8113 &secinfo
->flavor_info
);
8116 flavor
= RPC_AUTH_MAXFLAVOR
;
8120 if (!nfs_auth_info_match(&server
->auth_info
, flavor
))
8121 flavor
= RPC_AUTH_MAXFLAVOR
;
8123 if (flavor
!= RPC_AUTH_MAXFLAVOR
) {
8124 err
= nfs4_lookup_root_sec(server
, fhandle
,
8131 if (flavor
== RPC_AUTH_MAXFLAVOR
)
8142 static int _nfs41_test_stateid(struct nfs_server
*server
,
8143 nfs4_stateid
*stateid
,
8144 struct rpc_cred
*cred
)
8147 struct nfs41_test_stateid_args args
= {
8150 struct nfs41_test_stateid_res res
;
8151 struct rpc_message msg
= {
8152 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_TEST_STATEID
],
8157 struct rpc_clnt
*rpc_client
= server
->client
;
8159 nfs4_state_protect(server
->nfs_client
, NFS_SP4_MACH_CRED_STATEID
,
8162 dprintk("NFS call test_stateid %p\n", stateid
);
8163 nfs4_init_sequence(&args
.seq_args
, &res
.seq_res
, 0);
8164 nfs4_set_sequence_privileged(&args
.seq_args
);
8165 status
= nfs4_call_sync_sequence(rpc_client
, server
, &msg
,
8166 &args
.seq_args
, &res
.seq_res
);
8167 if (status
!= NFS_OK
) {
8168 dprintk("NFS reply test_stateid: failed, %d\n", status
);
8171 dprintk("NFS reply test_stateid: succeeded, %d\n", -res
.status
);
8176 * nfs41_test_stateid - perform a TEST_STATEID operation
8178 * @server: server / transport on which to perform the operation
8179 * @stateid: state ID to test
8182 * Returns NFS_OK if the server recognizes that "stateid" is valid.
8183 * Otherwise a negative NFS4ERR value is returned if the operation
8184 * failed or the state ID is not currently valid.
8186 static int nfs41_test_stateid(struct nfs_server
*server
,
8187 nfs4_stateid
*stateid
,
8188 struct rpc_cred
*cred
)
8190 struct nfs4_exception exception
= { };
8193 err
= _nfs41_test_stateid(server
, stateid
, cred
);
8194 if (err
!= -NFS4ERR_DELAY
)
8196 nfs4_handle_exception(server
, err
, &exception
);
8197 } while (exception
.retry
);
8201 struct nfs_free_stateid_data
{
8202 struct nfs_server
*server
;
8203 struct nfs41_free_stateid_args args
;
8204 struct nfs41_free_stateid_res res
;
8207 static void nfs41_free_stateid_prepare(struct rpc_task
*task
, void *calldata
)
8209 struct nfs_free_stateid_data
*data
= calldata
;
8210 nfs41_setup_sequence(nfs4_get_session(data
->server
),
8211 &data
->args
.seq_args
,
8216 static void nfs41_free_stateid_done(struct rpc_task
*task
, void *calldata
)
8218 struct nfs_free_stateid_data
*data
= calldata
;
8220 nfs41_sequence_done(task
, &data
->res
.seq_res
);
8222 switch (task
->tk_status
) {
8223 case -NFS4ERR_DELAY
:
8224 if (nfs4_async_handle_error(task
, data
->server
, NULL
) == -EAGAIN
)
8225 rpc_restart_call_prepare(task
);
8229 static void nfs41_free_stateid_release(void *calldata
)
8234 static const struct rpc_call_ops nfs41_free_stateid_ops
= {
8235 .rpc_call_prepare
= nfs41_free_stateid_prepare
,
8236 .rpc_call_done
= nfs41_free_stateid_done
,
8237 .rpc_release
= nfs41_free_stateid_release
,
8240 static struct rpc_task
*_nfs41_free_stateid(struct nfs_server
*server
,
8241 nfs4_stateid
*stateid
,
8242 struct rpc_cred
*cred
,
8245 struct rpc_message msg
= {
8246 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FREE_STATEID
],
8249 struct rpc_task_setup task_setup
= {
8250 .rpc_client
= server
->client
,
8251 .rpc_message
= &msg
,
8252 .callback_ops
= &nfs41_free_stateid_ops
,
8253 .flags
= RPC_TASK_ASYNC
,
8255 struct nfs_free_stateid_data
*data
;
8257 nfs4_state_protect(server
->nfs_client
, NFS_SP4_MACH_CRED_STATEID
,
8258 &task_setup
.rpc_client
, &msg
);
8260 dprintk("NFS call free_stateid %p\n", stateid
);
8261 data
= kmalloc(sizeof(*data
), GFP_NOFS
);
8263 return ERR_PTR(-ENOMEM
);
8264 data
->server
= server
;
8265 nfs4_stateid_copy(&data
->args
.stateid
, stateid
);
8267 task_setup
.callback_data
= data
;
8269 msg
.rpc_argp
= &data
->args
;
8270 msg
.rpc_resp
= &data
->res
;
8271 nfs4_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 0);
8273 nfs4_set_sequence_privileged(&data
->args
.seq_args
);
8275 return rpc_run_task(&task_setup
);
8279 * nfs41_free_stateid - perform a FREE_STATEID operation
8281 * @server: server / transport on which to perform the operation
8282 * @stateid: state ID to release
8285 * Returns NFS_OK if the server freed "stateid". Otherwise a
8286 * negative NFS4ERR value is returned.
8288 static int nfs41_free_stateid(struct nfs_server
*server
,
8289 nfs4_stateid
*stateid
,
8290 struct rpc_cred
*cred
)
8292 struct rpc_task
*task
;
8295 task
= _nfs41_free_stateid(server
, stateid
, cred
, true);
8297 return PTR_ERR(task
);
8298 ret
= rpc_wait_for_completion_task(task
);
8300 ret
= task
->tk_status
;
8306 nfs41_free_lock_state(struct nfs_server
*server
, struct nfs4_lock_state
*lsp
)
8308 struct rpc_task
*task
;
8309 struct rpc_cred
*cred
= lsp
->ls_state
->owner
->so_cred
;
8311 task
= _nfs41_free_stateid(server
, &lsp
->ls_stateid
, cred
, false);
8312 nfs4_free_lock_state(server
, lsp
);
8318 static bool nfs41_match_stateid(const nfs4_stateid
*s1
,
8319 const nfs4_stateid
*s2
)
8321 if (memcmp(s1
->other
, s2
->other
, sizeof(s1
->other
)) != 0)
8324 if (s1
->seqid
== s2
->seqid
)
8326 if (s1
->seqid
== 0 || s2
->seqid
== 0)
8332 #endif /* CONFIG_NFS_V4_1 */
8334 static bool nfs4_match_stateid(const nfs4_stateid
*s1
,
8335 const nfs4_stateid
*s2
)
8337 return nfs4_stateid_match(s1
, s2
);
8341 static const struct nfs4_state_recovery_ops nfs40_reboot_recovery_ops
= {
8342 .owner_flag_bit
= NFS_OWNER_RECLAIM_REBOOT
,
8343 .state_flag_bit
= NFS_STATE_RECLAIM_REBOOT
,
8344 .recover_open
= nfs4_open_reclaim
,
8345 .recover_lock
= nfs4_lock_reclaim
,
8346 .establish_clid
= nfs4_init_clientid
,
8347 .detect_trunking
= nfs40_discover_server_trunking
,
8350 #if defined(CONFIG_NFS_V4_1)
8351 static const struct nfs4_state_recovery_ops nfs41_reboot_recovery_ops
= {
8352 .owner_flag_bit
= NFS_OWNER_RECLAIM_REBOOT
,
8353 .state_flag_bit
= NFS_STATE_RECLAIM_REBOOT
,
8354 .recover_open
= nfs4_open_reclaim
,
8355 .recover_lock
= nfs4_lock_reclaim
,
8356 .establish_clid
= nfs41_init_clientid
,
8357 .reclaim_complete
= nfs41_proc_reclaim_complete
,
8358 .detect_trunking
= nfs41_discover_server_trunking
,
8360 #endif /* CONFIG_NFS_V4_1 */
8362 static const struct nfs4_state_recovery_ops nfs40_nograce_recovery_ops
= {
8363 .owner_flag_bit
= NFS_OWNER_RECLAIM_NOGRACE
,
8364 .state_flag_bit
= NFS_STATE_RECLAIM_NOGRACE
,
8365 .recover_open
= nfs4_open_expired
,
8366 .recover_lock
= nfs4_lock_expired
,
8367 .establish_clid
= nfs4_init_clientid
,
8370 #if defined(CONFIG_NFS_V4_1)
8371 static const struct nfs4_state_recovery_ops nfs41_nograce_recovery_ops
= {
8372 .owner_flag_bit
= NFS_OWNER_RECLAIM_NOGRACE
,
8373 .state_flag_bit
= NFS_STATE_RECLAIM_NOGRACE
,
8374 .recover_open
= nfs41_open_expired
,
8375 .recover_lock
= nfs41_lock_expired
,
8376 .establish_clid
= nfs41_init_clientid
,
8378 #endif /* CONFIG_NFS_V4_1 */
8380 static const struct nfs4_state_maintenance_ops nfs40_state_renewal_ops
= {
8381 .sched_state_renewal
= nfs4_proc_async_renew
,
8382 .get_state_renewal_cred_locked
= nfs4_get_renew_cred_locked
,
8383 .renew_lease
= nfs4_proc_renew
,
8386 #if defined(CONFIG_NFS_V4_1)
8387 static const struct nfs4_state_maintenance_ops nfs41_state_renewal_ops
= {
8388 .sched_state_renewal
= nfs41_proc_async_sequence
,
8389 .get_state_renewal_cred_locked
= nfs4_get_machine_cred_locked
,
8390 .renew_lease
= nfs4_proc_sequence
,
8394 static const struct nfs4_mig_recovery_ops nfs40_mig_recovery_ops
= {
8395 .get_locations
= _nfs40_proc_get_locations
,
8396 .fsid_present
= _nfs40_proc_fsid_present
,
8399 #if defined(CONFIG_NFS_V4_1)
8400 static const struct nfs4_mig_recovery_ops nfs41_mig_recovery_ops
= {
8401 .get_locations
= _nfs41_proc_get_locations
,
8402 .fsid_present
= _nfs41_proc_fsid_present
,
8404 #endif /* CONFIG_NFS_V4_1 */
8406 static const struct nfs4_minor_version_ops nfs_v4_0_minor_ops
= {
8408 .init_caps
= NFS_CAP_READDIRPLUS
8409 | NFS_CAP_ATOMIC_OPEN
8410 | NFS_CAP_CHANGE_ATTR
8411 | NFS_CAP_POSIX_LOCK
,
8412 .init_client
= nfs40_init_client
,
8413 .shutdown_client
= nfs40_shutdown_client
,
8414 .match_stateid
= nfs4_match_stateid
,
8415 .find_root_sec
= nfs4_find_root_sec
,
8416 .free_lock_state
= nfs4_release_lockowner
,
8417 .call_sync_ops
= &nfs40_call_sync_ops
,
8418 .reboot_recovery_ops
= &nfs40_reboot_recovery_ops
,
8419 .nograce_recovery_ops
= &nfs40_nograce_recovery_ops
,
8420 .state_renewal_ops
= &nfs40_state_renewal_ops
,
8421 .mig_recovery_ops
= &nfs40_mig_recovery_ops
,
8424 #if defined(CONFIG_NFS_V4_1)
8425 static const struct nfs4_minor_version_ops nfs_v4_1_minor_ops
= {
8427 .init_caps
= NFS_CAP_READDIRPLUS
8428 | NFS_CAP_ATOMIC_OPEN
8429 | NFS_CAP_CHANGE_ATTR
8430 | NFS_CAP_POSIX_LOCK
8431 | NFS_CAP_STATEID_NFSV41
8432 | NFS_CAP_ATOMIC_OPEN_V1
,
8433 .init_client
= nfs41_init_client
,
8434 .shutdown_client
= nfs41_shutdown_client
,
8435 .match_stateid
= nfs41_match_stateid
,
8436 .find_root_sec
= nfs41_find_root_sec
,
8437 .free_lock_state
= nfs41_free_lock_state
,
8438 .call_sync_ops
= &nfs41_call_sync_ops
,
8439 .reboot_recovery_ops
= &nfs41_reboot_recovery_ops
,
8440 .nograce_recovery_ops
= &nfs41_nograce_recovery_ops
,
8441 .state_renewal_ops
= &nfs41_state_renewal_ops
,
8442 .mig_recovery_ops
= &nfs41_mig_recovery_ops
,
8446 #if defined(CONFIG_NFS_V4_2)
8447 static const struct nfs4_minor_version_ops nfs_v4_2_minor_ops
= {
8449 .init_caps
= NFS_CAP_READDIRPLUS
8450 | NFS_CAP_ATOMIC_OPEN
8451 | NFS_CAP_CHANGE_ATTR
8452 | NFS_CAP_POSIX_LOCK
8453 | NFS_CAP_STATEID_NFSV41
8454 | NFS_CAP_ATOMIC_OPEN_V1
,
8455 .init_client
= nfs41_init_client
,
8456 .shutdown_client
= nfs41_shutdown_client
,
8457 .match_stateid
= nfs41_match_stateid
,
8458 .find_root_sec
= nfs41_find_root_sec
,
8459 .free_lock_state
= nfs41_free_lock_state
,
8460 .call_sync_ops
= &nfs41_call_sync_ops
,
8461 .reboot_recovery_ops
= &nfs41_reboot_recovery_ops
,
8462 .nograce_recovery_ops
= &nfs41_nograce_recovery_ops
,
8463 .state_renewal_ops
= &nfs41_state_renewal_ops
,
8467 const struct nfs4_minor_version_ops
*nfs_v4_minor_ops
[] = {
8468 [0] = &nfs_v4_0_minor_ops
,
8469 #if defined(CONFIG_NFS_V4_1)
8470 [1] = &nfs_v4_1_minor_ops
,
8472 #if defined(CONFIG_NFS_V4_2)
8473 [2] = &nfs_v4_2_minor_ops
,
8477 static const struct inode_operations nfs4_dir_inode_operations
= {
8478 .create
= nfs_create
,
8479 .lookup
= nfs_lookup
,
8480 .atomic_open
= nfs_atomic_open
,
8482 .unlink
= nfs_unlink
,
8483 .symlink
= nfs_symlink
,
8487 .rename
= nfs_rename
,
8488 .permission
= nfs_permission
,
8489 .getattr
= nfs_getattr
,
8490 .setattr
= nfs_setattr
,
8491 .getxattr
= generic_getxattr
,
8492 .setxattr
= generic_setxattr
,
8493 .listxattr
= generic_listxattr
,
8494 .removexattr
= generic_removexattr
,
8497 static const struct inode_operations nfs4_file_inode_operations
= {
8498 .permission
= nfs_permission
,
8499 .getattr
= nfs_getattr
,
8500 .setattr
= nfs_setattr
,
8501 .getxattr
= generic_getxattr
,
8502 .setxattr
= generic_setxattr
,
8503 .listxattr
= generic_listxattr
,
8504 .removexattr
= generic_removexattr
,
8507 const struct nfs_rpc_ops nfs_v4_clientops
= {
8508 .version
= 4, /* protocol version */
8509 .dentry_ops
= &nfs4_dentry_operations
,
8510 .dir_inode_ops
= &nfs4_dir_inode_operations
,
8511 .file_inode_ops
= &nfs4_file_inode_operations
,
8512 .file_ops
= &nfs4_file_operations
,
8513 .getroot
= nfs4_proc_get_root
,
8514 .submount
= nfs4_submount
,
8515 .try_mount
= nfs4_try_mount
,
8516 .getattr
= nfs4_proc_getattr
,
8517 .setattr
= nfs4_proc_setattr
,
8518 .lookup
= nfs4_proc_lookup
,
8519 .access
= nfs4_proc_access
,
8520 .readlink
= nfs4_proc_readlink
,
8521 .create
= nfs4_proc_create
,
8522 .remove
= nfs4_proc_remove
,
8523 .unlink_setup
= nfs4_proc_unlink_setup
,
8524 .unlink_rpc_prepare
= nfs4_proc_unlink_rpc_prepare
,
8525 .unlink_done
= nfs4_proc_unlink_done
,
8526 .rename_setup
= nfs4_proc_rename_setup
,
8527 .rename_rpc_prepare
= nfs4_proc_rename_rpc_prepare
,
8528 .rename_done
= nfs4_proc_rename_done
,
8529 .link
= nfs4_proc_link
,
8530 .symlink
= nfs4_proc_symlink
,
8531 .mkdir
= nfs4_proc_mkdir
,
8532 .rmdir
= nfs4_proc_remove
,
8533 .readdir
= nfs4_proc_readdir
,
8534 .mknod
= nfs4_proc_mknod
,
8535 .statfs
= nfs4_proc_statfs
,
8536 .fsinfo
= nfs4_proc_fsinfo
,
8537 .pathconf
= nfs4_proc_pathconf
,
8538 .set_capabilities
= nfs4_server_capabilities
,
8539 .decode_dirent
= nfs4_decode_dirent
,
8540 .pgio_rpc_prepare
= nfs4_proc_pgio_rpc_prepare
,
8541 .read_setup
= nfs4_proc_read_setup
,
8542 .read_done
= nfs4_read_done
,
8543 .write_setup
= nfs4_proc_write_setup
,
8544 .write_done
= nfs4_write_done
,
8545 .commit_setup
= nfs4_proc_commit_setup
,
8546 .commit_rpc_prepare
= nfs4_proc_commit_rpc_prepare
,
8547 .commit_done
= nfs4_commit_done
,
8548 .lock
= nfs4_proc_lock
,
8549 .clear_acl_cache
= nfs4_zap_acl_attr
,
8550 .close_context
= nfs4_close_context
,
8551 .open_context
= nfs4_atomic_open
,
8552 .have_delegation
= nfs4_have_delegation
,
8553 .return_delegation
= nfs4_inode_return_delegation
,
8554 .alloc_client
= nfs4_alloc_client
,
8555 .init_client
= nfs4_init_client
,
8556 .free_client
= nfs4_free_client
,
8557 .create_server
= nfs4_create_server
,
8558 .clone_server
= nfs_clone_server
,
8561 static const struct xattr_handler nfs4_xattr_nfs4_acl_handler
= {
8562 .prefix
= XATTR_NAME_NFSV4_ACL
,
8563 .list
= nfs4_xattr_list_nfs4_acl
,
8564 .get
= nfs4_xattr_get_nfs4_acl
,
8565 .set
= nfs4_xattr_set_nfs4_acl
,
8568 const struct xattr_handler
*nfs4_xattr_handlers
[] = {
8569 &nfs4_xattr_nfs4_acl_handler
,
8570 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
8571 &nfs4_xattr_nfs4_label_handler
,