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
;
542 if (!RPC_WAS_SENT(task
))
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 bool send_new_highest_used_slotid
= false;
565 /* just wake up the next guy waiting since
566 * we may have not consumed a slot after all */
567 dprintk("%s: No slot\n", __func__
);
570 tbl
= res
->sr_slot
->table
;
571 session
= tbl
->session
;
573 spin_lock(&tbl
->slot_tbl_lock
);
574 /* Be nice to the server: try to ensure that the last transmitted
575 * value for highest_user_slotid <= target_highest_slotid
577 if (tbl
->highest_used_slotid
> tbl
->target_highest_slotid
)
578 send_new_highest_used_slotid
= true;
580 if (nfs41_wake_and_assign_slot(tbl
, res
->sr_slot
)) {
581 send_new_highest_used_slotid
= false;
584 nfs4_free_slot(tbl
, res
->sr_slot
);
586 if (tbl
->highest_used_slotid
!= NFS4_NO_SLOT
)
587 send_new_highest_used_slotid
= false;
589 spin_unlock(&tbl
->slot_tbl_lock
);
591 if (send_new_highest_used_slotid
)
592 nfs41_server_notify_highest_slotid_update(session
->clp
);
595 static int nfs41_sequence_done(struct rpc_task
*task
, struct nfs4_sequence_res
*res
)
597 struct nfs4_session
*session
;
598 struct nfs4_slot
*slot
;
599 struct nfs_client
*clp
;
600 bool interrupted
= false;
603 /* don't increment the sequence number if the task wasn't sent */
604 if (!RPC_WAS_SENT(task
))
608 session
= slot
->table
->session
;
610 if (slot
->interrupted
) {
611 slot
->interrupted
= 0;
615 trace_nfs4_sequence_done(session
, res
);
616 /* Check the SEQUENCE operation status */
617 switch (res
->sr_status
) {
619 /* Update the slot's sequence and clientid lease timer */
622 do_renew_lease(clp
, res
->sr_timestamp
);
623 /* Check sequence flags */
624 if (res
->sr_status_flags
!= 0)
625 nfs4_schedule_lease_recovery(clp
);
626 nfs41_update_target_slotid(slot
->table
, slot
, res
);
630 * sr_status remains 1 if an RPC level error occurred.
631 * The server may or may not have processed the sequence
633 * Mark the slot as having hosted an interrupted RPC call.
635 slot
->interrupted
= 1;
638 /* The server detected a resend of the RPC call and
639 * returned NFS4ERR_DELAY as per Section 2.10.6.2
642 dprintk("%s: slot=%u seq=%u: Operation in progress\n",
647 case -NFS4ERR_BADSLOT
:
649 * The slot id we used was probably retired. Try again
650 * using a different slot id.
653 case -NFS4ERR_SEQ_MISORDERED
:
655 * Was the last operation on this sequence interrupted?
656 * If so, retry after bumping the sequence number.
663 * Could this slot have been previously retired?
664 * If so, then the server may be expecting seq_nr = 1!
666 if (slot
->seq_nr
!= 1) {
671 case -NFS4ERR_SEQ_FALSE_RETRY
:
675 /* Just update the slot sequence no. */
679 /* The session may be reset by one of the error handlers. */
680 dprintk("%s: Error %d free the slot \n", __func__
, res
->sr_status
);
681 nfs41_sequence_free_slot(res
);
684 if (rpc_restart_call_prepare(task
)) {
690 if (!rpc_restart_call(task
))
692 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
696 static int nfs4_sequence_done(struct rpc_task
*task
,
697 struct nfs4_sequence_res
*res
)
699 if (res
->sr_slot
== NULL
)
701 if (!res
->sr_slot
->table
->session
)
702 return nfs40_sequence_done(task
, res
);
703 return nfs41_sequence_done(task
, res
);
706 int nfs41_setup_sequence(struct nfs4_session
*session
,
707 struct nfs4_sequence_args
*args
,
708 struct nfs4_sequence_res
*res
,
709 struct rpc_task
*task
)
711 struct nfs4_slot
*slot
;
712 struct nfs4_slot_table
*tbl
;
714 dprintk("--> %s\n", __func__
);
715 /* slot already allocated? */
716 if (res
->sr_slot
!= NULL
)
719 tbl
= &session
->fc_slot_table
;
721 task
->tk_timeout
= 0;
723 spin_lock(&tbl
->slot_tbl_lock
);
724 if (test_bit(NFS4_SLOT_TBL_DRAINING
, &tbl
->slot_tbl_state
) &&
725 !args
->sa_privileged
) {
726 /* The state manager will wait until the slot table is empty */
727 dprintk("%s session is draining\n", __func__
);
731 slot
= nfs4_alloc_slot(tbl
);
733 /* If out of memory, try again in 1/4 second */
734 if (slot
== ERR_PTR(-ENOMEM
))
735 task
->tk_timeout
= HZ
>> 2;
736 dprintk("<-- %s: no free slots\n", __func__
);
739 spin_unlock(&tbl
->slot_tbl_lock
);
741 args
->sa_slot
= slot
;
743 dprintk("<-- %s slotid=%u seqid=%u\n", __func__
,
744 slot
->slot_nr
, slot
->seq_nr
);
747 res
->sr_timestamp
= jiffies
;
748 res
->sr_status_flags
= 0;
750 * sr_status is only set in decode_sequence, and so will remain
751 * set to 1 if an rpc level failure occurs.
754 trace_nfs4_setup_sequence(session
, args
);
756 rpc_call_start(task
);
759 /* Privileged tasks are queued with top priority */
760 if (args
->sa_privileged
)
761 rpc_sleep_on_priority(&tbl
->slot_tbl_waitq
, task
,
762 NULL
, RPC_PRIORITY_PRIVILEGED
);
764 rpc_sleep_on(&tbl
->slot_tbl_waitq
, task
, NULL
);
765 spin_unlock(&tbl
->slot_tbl_lock
);
768 EXPORT_SYMBOL_GPL(nfs41_setup_sequence
);
770 static int nfs4_setup_sequence(const struct nfs_server
*server
,
771 struct nfs4_sequence_args
*args
,
772 struct nfs4_sequence_res
*res
,
773 struct rpc_task
*task
)
775 struct nfs4_session
*session
= nfs4_get_session(server
);
779 return nfs40_setup_sequence(server
, args
, res
, task
);
781 dprintk("--> %s clp %p session %p sr_slot %u\n",
782 __func__
, session
->clp
, session
, res
->sr_slot
?
783 res
->sr_slot
->slot_nr
: NFS4_NO_SLOT
);
785 ret
= nfs41_setup_sequence(session
, args
, res
, task
);
787 dprintk("<-- %s status=%d\n", __func__
, ret
);
791 static void nfs41_call_sync_prepare(struct rpc_task
*task
, void *calldata
)
793 struct nfs4_call_sync_data
*data
= calldata
;
794 struct nfs4_session
*session
= nfs4_get_session(data
->seq_server
);
796 dprintk("--> %s data->seq_server %p\n", __func__
, data
->seq_server
);
798 nfs41_setup_sequence(session
, data
->seq_args
, data
->seq_res
, task
);
801 static void nfs41_call_sync_done(struct rpc_task
*task
, void *calldata
)
803 struct nfs4_call_sync_data
*data
= calldata
;
805 nfs41_sequence_done(task
, data
->seq_res
);
808 static const struct rpc_call_ops nfs41_call_sync_ops
= {
809 .rpc_call_prepare
= nfs41_call_sync_prepare
,
810 .rpc_call_done
= nfs41_call_sync_done
,
813 #else /* !CONFIG_NFS_V4_1 */
815 static int nfs4_setup_sequence(const struct nfs_server
*server
,
816 struct nfs4_sequence_args
*args
,
817 struct nfs4_sequence_res
*res
,
818 struct rpc_task
*task
)
820 return nfs40_setup_sequence(server
, args
, res
, task
);
823 static int nfs4_sequence_done(struct rpc_task
*task
,
824 struct nfs4_sequence_res
*res
)
826 return nfs40_sequence_done(task
, res
);
829 #endif /* !CONFIG_NFS_V4_1 */
831 static void nfs40_call_sync_prepare(struct rpc_task
*task
, void *calldata
)
833 struct nfs4_call_sync_data
*data
= calldata
;
834 nfs4_setup_sequence(data
->seq_server
,
835 data
->seq_args
, data
->seq_res
, task
);
838 static void nfs40_call_sync_done(struct rpc_task
*task
, void *calldata
)
840 struct nfs4_call_sync_data
*data
= calldata
;
841 nfs4_sequence_done(task
, data
->seq_res
);
844 static const struct rpc_call_ops nfs40_call_sync_ops
= {
845 .rpc_call_prepare
= nfs40_call_sync_prepare
,
846 .rpc_call_done
= nfs40_call_sync_done
,
849 static int nfs4_call_sync_sequence(struct rpc_clnt
*clnt
,
850 struct nfs_server
*server
,
851 struct rpc_message
*msg
,
852 struct nfs4_sequence_args
*args
,
853 struct nfs4_sequence_res
*res
)
856 struct rpc_task
*task
;
857 struct nfs_client
*clp
= server
->nfs_client
;
858 struct nfs4_call_sync_data data
= {
859 .seq_server
= server
,
863 struct rpc_task_setup task_setup
= {
866 .callback_ops
= clp
->cl_mvops
->call_sync_ops
,
867 .callback_data
= &data
870 task
= rpc_run_task(&task_setup
);
874 ret
= task
->tk_status
;
881 int nfs4_call_sync(struct rpc_clnt
*clnt
,
882 struct nfs_server
*server
,
883 struct rpc_message
*msg
,
884 struct nfs4_sequence_args
*args
,
885 struct nfs4_sequence_res
*res
,
888 nfs4_init_sequence(args
, res
, cache_reply
);
889 return nfs4_call_sync_sequence(clnt
, server
, msg
, args
, res
);
892 static void update_changeattr(struct inode
*dir
, struct nfs4_change_info
*cinfo
)
894 struct nfs_inode
*nfsi
= NFS_I(dir
);
896 spin_lock(&dir
->i_lock
);
897 nfsi
->cache_validity
|= NFS_INO_INVALID_ATTR
|NFS_INO_INVALID_DATA
;
898 if (!cinfo
->atomic
|| cinfo
->before
!= dir
->i_version
)
899 nfs_force_lookup_revalidate(dir
);
900 dir
->i_version
= cinfo
->after
;
901 nfs_fscache_invalidate(dir
);
902 spin_unlock(&dir
->i_lock
);
905 struct nfs4_opendata
{
907 struct nfs_openargs o_arg
;
908 struct nfs_openres o_res
;
909 struct nfs_open_confirmargs c_arg
;
910 struct nfs_open_confirmres c_res
;
911 struct nfs4_string owner_name
;
912 struct nfs4_string group_name
;
913 struct nfs_fattr f_attr
;
914 struct nfs4_label
*f_label
;
916 struct dentry
*dentry
;
917 struct nfs4_state_owner
*owner
;
918 struct nfs4_state
*state
;
920 unsigned long timestamp
;
921 unsigned int rpc_done
: 1;
922 unsigned int file_created
: 1;
923 unsigned int is_recover
: 1;
928 static bool nfs4_clear_cap_atomic_open_v1(struct nfs_server
*server
,
929 int err
, struct nfs4_exception
*exception
)
933 if (!(server
->caps
& NFS_CAP_ATOMIC_OPEN_V1
))
935 server
->caps
&= ~NFS_CAP_ATOMIC_OPEN_V1
;
936 exception
->retry
= 1;
940 static enum open_claim_type4
941 nfs4_map_atomic_open_claim(struct nfs_server
*server
,
942 enum open_claim_type4 claim
)
944 if (server
->caps
& NFS_CAP_ATOMIC_OPEN_V1
)
949 case NFS4_OPEN_CLAIM_FH
:
950 return NFS4_OPEN_CLAIM_NULL
;
951 case NFS4_OPEN_CLAIM_DELEG_CUR_FH
:
952 return NFS4_OPEN_CLAIM_DELEGATE_CUR
;
953 case NFS4_OPEN_CLAIM_DELEG_PREV_FH
:
954 return NFS4_OPEN_CLAIM_DELEGATE_PREV
;
958 static void nfs4_init_opendata_res(struct nfs4_opendata
*p
)
960 p
->o_res
.f_attr
= &p
->f_attr
;
961 p
->o_res
.f_label
= p
->f_label
;
962 p
->o_res
.seqid
= p
->o_arg
.seqid
;
963 p
->c_res
.seqid
= p
->c_arg
.seqid
;
964 p
->o_res
.server
= p
->o_arg
.server
;
965 p
->o_res
.access_request
= p
->o_arg
.access
;
966 nfs_fattr_init(&p
->f_attr
);
967 nfs_fattr_init_names(&p
->f_attr
, &p
->owner_name
, &p
->group_name
);
970 static struct nfs4_opendata
*nfs4_opendata_alloc(struct dentry
*dentry
,
971 struct nfs4_state_owner
*sp
, fmode_t fmode
, int flags
,
972 const struct iattr
*attrs
,
973 struct nfs4_label
*label
,
974 enum open_claim_type4 claim
,
977 struct dentry
*parent
= dget_parent(dentry
);
978 struct inode
*dir
= parent
->d_inode
;
979 struct nfs_server
*server
= NFS_SERVER(dir
);
980 struct nfs4_opendata
*p
;
982 p
= kzalloc(sizeof(*p
), gfp_mask
);
986 p
->f_label
= nfs4_label_alloc(server
, gfp_mask
);
987 if (IS_ERR(p
->f_label
))
990 p
->o_arg
.seqid
= nfs_alloc_seqid(&sp
->so_seqid
, gfp_mask
);
991 if (p
->o_arg
.seqid
== NULL
)
993 nfs_sb_active(dentry
->d_sb
);
994 p
->dentry
= dget(dentry
);
997 atomic_inc(&sp
->so_count
);
998 p
->o_arg
.open_flags
= flags
;
999 p
->o_arg
.fmode
= fmode
& (FMODE_READ
|FMODE_WRITE
);
1000 /* don't put an ACCESS op in OPEN compound if O_EXCL, because ACCESS
1001 * will return permission denied for all bits until close */
1002 if (!(flags
& O_EXCL
)) {
1003 /* ask server to check for all possible rights as results
1005 p
->o_arg
.access
= NFS4_ACCESS_READ
| NFS4_ACCESS_MODIFY
|
1006 NFS4_ACCESS_EXTEND
| NFS4_ACCESS_EXECUTE
;
1008 p
->o_arg
.clientid
= server
->nfs_client
->cl_clientid
;
1009 p
->o_arg
.id
.create_time
= ktime_to_ns(sp
->so_seqid
.create_time
);
1010 p
->o_arg
.id
.uniquifier
= sp
->so_seqid
.owner_id
;
1011 p
->o_arg
.name
= &dentry
->d_name
;
1012 p
->o_arg
.server
= server
;
1013 p
->o_arg
.bitmask
= nfs4_bitmask(server
, label
);
1014 p
->o_arg
.open_bitmap
= &nfs4_fattr_bitmap
[0];
1015 p
->o_arg
.label
= label
;
1016 p
->o_arg
.claim
= nfs4_map_atomic_open_claim(server
, claim
);
1017 switch (p
->o_arg
.claim
) {
1018 case NFS4_OPEN_CLAIM_NULL
:
1019 case NFS4_OPEN_CLAIM_DELEGATE_CUR
:
1020 case NFS4_OPEN_CLAIM_DELEGATE_PREV
:
1021 p
->o_arg
.fh
= NFS_FH(dir
);
1023 case NFS4_OPEN_CLAIM_PREVIOUS
:
1024 case NFS4_OPEN_CLAIM_FH
:
1025 case NFS4_OPEN_CLAIM_DELEG_CUR_FH
:
1026 case NFS4_OPEN_CLAIM_DELEG_PREV_FH
:
1027 p
->o_arg
.fh
= NFS_FH(dentry
->d_inode
);
1029 if (attrs
!= NULL
&& attrs
->ia_valid
!= 0) {
1032 p
->o_arg
.u
.attrs
= &p
->attrs
;
1033 memcpy(&p
->attrs
, attrs
, sizeof(p
->attrs
));
1036 verf
[1] = current
->pid
;
1037 memcpy(p
->o_arg
.u
.verifier
.data
, verf
,
1038 sizeof(p
->o_arg
.u
.verifier
.data
));
1040 p
->c_arg
.fh
= &p
->o_res
.fh
;
1041 p
->c_arg
.stateid
= &p
->o_res
.stateid
;
1042 p
->c_arg
.seqid
= p
->o_arg
.seqid
;
1043 nfs4_init_opendata_res(p
);
1044 kref_init(&p
->kref
);
1048 nfs4_label_free(p
->f_label
);
1056 static void nfs4_opendata_free(struct kref
*kref
)
1058 struct nfs4_opendata
*p
= container_of(kref
,
1059 struct nfs4_opendata
, kref
);
1060 struct super_block
*sb
= p
->dentry
->d_sb
;
1062 nfs_free_seqid(p
->o_arg
.seqid
);
1063 if (p
->state
!= NULL
)
1064 nfs4_put_open_state(p
->state
);
1065 nfs4_put_state_owner(p
->owner
);
1067 nfs4_label_free(p
->f_label
);
1071 nfs_sb_deactive(sb
);
1072 nfs_fattr_free_names(&p
->f_attr
);
1076 static void nfs4_opendata_put(struct nfs4_opendata
*p
)
1079 kref_put(&p
->kref
, nfs4_opendata_free
);
1082 static int nfs4_wait_for_completion_rpc_task(struct rpc_task
*task
)
1086 ret
= rpc_wait_for_completion_task(task
);
1090 static int can_open_cached(struct nfs4_state
*state
, fmode_t mode
, int open_mode
)
1094 if (open_mode
& (O_EXCL
|O_TRUNC
))
1096 switch (mode
& (FMODE_READ
|FMODE_WRITE
)) {
1098 ret
|= test_bit(NFS_O_RDONLY_STATE
, &state
->flags
) != 0
1099 && state
->n_rdonly
!= 0;
1102 ret
|= test_bit(NFS_O_WRONLY_STATE
, &state
->flags
) != 0
1103 && state
->n_wronly
!= 0;
1105 case FMODE_READ
|FMODE_WRITE
:
1106 ret
|= test_bit(NFS_O_RDWR_STATE
, &state
->flags
) != 0
1107 && state
->n_rdwr
!= 0;
1113 static int can_open_delegated(struct nfs_delegation
*delegation
, fmode_t fmode
)
1115 if (delegation
== NULL
)
1117 if ((delegation
->type
& fmode
) != fmode
)
1119 if (test_bit(NFS_DELEGATION_NEED_RECLAIM
, &delegation
->flags
))
1121 if (test_bit(NFS_DELEGATION_RETURNING
, &delegation
->flags
))
1123 nfs_mark_delegation_referenced(delegation
);
1127 static void update_open_stateflags(struct nfs4_state
*state
, fmode_t fmode
)
1136 case FMODE_READ
|FMODE_WRITE
:
1139 nfs4_state_set_mode_locked(state
, state
->state
| fmode
);
1142 static void nfs_set_open_stateid_locked(struct nfs4_state
*state
, nfs4_stateid
*stateid
, fmode_t fmode
)
1144 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0)
1145 nfs4_stateid_copy(&state
->stateid
, stateid
);
1146 nfs4_stateid_copy(&state
->open_stateid
, stateid
);
1147 set_bit(NFS_OPEN_STATE
, &state
->flags
);
1150 set_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1153 set_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1155 case FMODE_READ
|FMODE_WRITE
:
1156 set_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1160 static void nfs_set_open_stateid(struct nfs4_state
*state
, nfs4_stateid
*stateid
, fmode_t fmode
)
1162 write_seqlock(&state
->seqlock
);
1163 nfs_set_open_stateid_locked(state
, stateid
, fmode
);
1164 write_sequnlock(&state
->seqlock
);
1167 static void __update_open_stateid(struct nfs4_state
*state
, nfs4_stateid
*open_stateid
, const nfs4_stateid
*deleg_stateid
, fmode_t fmode
)
1170 * Protect the call to nfs4_state_set_mode_locked and
1171 * serialise the stateid update
1173 write_seqlock(&state
->seqlock
);
1174 if (deleg_stateid
!= NULL
) {
1175 nfs4_stateid_copy(&state
->stateid
, deleg_stateid
);
1176 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1178 if (open_stateid
!= NULL
)
1179 nfs_set_open_stateid_locked(state
, open_stateid
, fmode
);
1180 write_sequnlock(&state
->seqlock
);
1181 spin_lock(&state
->owner
->so_lock
);
1182 update_open_stateflags(state
, fmode
);
1183 spin_unlock(&state
->owner
->so_lock
);
1186 static int update_open_stateid(struct nfs4_state
*state
, nfs4_stateid
*open_stateid
, nfs4_stateid
*delegation
, fmode_t fmode
)
1188 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
1189 struct nfs_delegation
*deleg_cur
;
1192 fmode
&= (FMODE_READ
|FMODE_WRITE
);
1195 deleg_cur
= rcu_dereference(nfsi
->delegation
);
1196 if (deleg_cur
== NULL
)
1199 spin_lock(&deleg_cur
->lock
);
1200 if (rcu_dereference(nfsi
->delegation
) != deleg_cur
||
1201 test_bit(NFS_DELEGATION_RETURNING
, &deleg_cur
->flags
) ||
1202 (deleg_cur
->type
& fmode
) != fmode
)
1203 goto no_delegation_unlock
;
1205 if (delegation
== NULL
)
1206 delegation
= &deleg_cur
->stateid
;
1207 else if (!nfs4_stateid_match(&deleg_cur
->stateid
, delegation
))
1208 goto no_delegation_unlock
;
1210 nfs_mark_delegation_referenced(deleg_cur
);
1211 __update_open_stateid(state
, open_stateid
, &deleg_cur
->stateid
, fmode
);
1213 no_delegation_unlock
:
1214 spin_unlock(&deleg_cur
->lock
);
1218 if (!ret
&& open_stateid
!= NULL
) {
1219 __update_open_stateid(state
, open_stateid
, NULL
, fmode
);
1227 static void nfs4_return_incompatible_delegation(struct inode
*inode
, fmode_t fmode
)
1229 struct nfs_delegation
*delegation
;
1232 delegation
= rcu_dereference(NFS_I(inode
)->delegation
);
1233 if (delegation
== NULL
|| (delegation
->type
& fmode
) == fmode
) {
1238 nfs4_inode_return_delegation(inode
);
1241 static struct nfs4_state
*nfs4_try_open_cached(struct nfs4_opendata
*opendata
)
1243 struct nfs4_state
*state
= opendata
->state
;
1244 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
1245 struct nfs_delegation
*delegation
;
1246 int open_mode
= opendata
->o_arg
.open_flags
;
1247 fmode_t fmode
= opendata
->o_arg
.fmode
;
1248 nfs4_stateid stateid
;
1252 if (can_open_cached(state
, fmode
, open_mode
)) {
1253 spin_lock(&state
->owner
->so_lock
);
1254 if (can_open_cached(state
, fmode
, open_mode
)) {
1255 update_open_stateflags(state
, fmode
);
1256 spin_unlock(&state
->owner
->so_lock
);
1257 goto out_return_state
;
1259 spin_unlock(&state
->owner
->so_lock
);
1262 delegation
= rcu_dereference(nfsi
->delegation
);
1263 if (!can_open_delegated(delegation
, fmode
)) {
1267 /* Save the delegation */
1268 nfs4_stateid_copy(&stateid
, &delegation
->stateid
);
1270 nfs_release_seqid(opendata
->o_arg
.seqid
);
1271 if (!opendata
->is_recover
) {
1272 ret
= nfs_may_open(state
->inode
, state
->owner
->so_cred
, open_mode
);
1278 /* Try to update the stateid using the delegation */
1279 if (update_open_stateid(state
, NULL
, &stateid
, fmode
))
1280 goto out_return_state
;
1283 return ERR_PTR(ret
);
1285 atomic_inc(&state
->count
);
1290 nfs4_opendata_check_deleg(struct nfs4_opendata
*data
, struct nfs4_state
*state
)
1292 struct nfs_client
*clp
= NFS_SERVER(state
->inode
)->nfs_client
;
1293 struct nfs_delegation
*delegation
;
1294 int delegation_flags
= 0;
1297 delegation
= rcu_dereference(NFS_I(state
->inode
)->delegation
);
1299 delegation_flags
= delegation
->flags
;
1301 if (data
->o_arg
.claim
== NFS4_OPEN_CLAIM_DELEGATE_CUR
) {
1302 pr_err_ratelimited("NFS: Broken NFSv4 server %s is "
1303 "returning a delegation for "
1304 "OPEN(CLAIM_DELEGATE_CUR)\n",
1306 } else if ((delegation_flags
& 1UL<<NFS_DELEGATION_NEED_RECLAIM
) == 0)
1307 nfs_inode_set_delegation(state
->inode
,
1308 data
->owner
->so_cred
,
1311 nfs_inode_reclaim_delegation(state
->inode
,
1312 data
->owner
->so_cred
,
1317 * Check the inode attributes against the CLAIM_PREVIOUS returned attributes
1318 * and update the nfs4_state.
1320 static struct nfs4_state
*
1321 _nfs4_opendata_reclaim_to_nfs4_state(struct nfs4_opendata
*data
)
1323 struct inode
*inode
= data
->state
->inode
;
1324 struct nfs4_state
*state
= data
->state
;
1327 if (!data
->rpc_done
) {
1328 if (data
->rpc_status
) {
1329 ret
= data
->rpc_status
;
1332 /* cached opens have already been processed */
1336 ret
= nfs_refresh_inode(inode
, &data
->f_attr
);
1340 if (data
->o_res
.delegation_type
!= 0)
1341 nfs4_opendata_check_deleg(data
, state
);
1343 update_open_stateid(state
, &data
->o_res
.stateid
, NULL
,
1345 atomic_inc(&state
->count
);
1349 return ERR_PTR(ret
);
1353 static struct nfs4_state
*
1354 _nfs4_opendata_to_nfs4_state(struct nfs4_opendata
*data
)
1356 struct inode
*inode
;
1357 struct nfs4_state
*state
= NULL
;
1360 if (!data
->rpc_done
) {
1361 state
= nfs4_try_open_cached(data
);
1366 if (!(data
->f_attr
.valid
& NFS_ATTR_FATTR
))
1368 inode
= nfs_fhget(data
->dir
->d_sb
, &data
->o_res
.fh
, &data
->f_attr
, data
->f_label
);
1369 ret
= PTR_ERR(inode
);
1373 state
= nfs4_get_open_state(inode
, data
->owner
);
1376 if (data
->o_res
.delegation_type
!= 0)
1377 nfs4_opendata_check_deleg(data
, state
);
1378 update_open_stateid(state
, &data
->o_res
.stateid
, NULL
,
1382 nfs_release_seqid(data
->o_arg
.seqid
);
1387 return ERR_PTR(ret
);
1390 static struct nfs4_state
*
1391 nfs4_opendata_to_nfs4_state(struct nfs4_opendata
*data
)
1393 if (data
->o_arg
.claim
== NFS4_OPEN_CLAIM_PREVIOUS
)
1394 return _nfs4_opendata_reclaim_to_nfs4_state(data
);
1395 return _nfs4_opendata_to_nfs4_state(data
);
1398 static struct nfs_open_context
*nfs4_state_find_open_context(struct nfs4_state
*state
)
1400 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
1401 struct nfs_open_context
*ctx
;
1403 spin_lock(&state
->inode
->i_lock
);
1404 list_for_each_entry(ctx
, &nfsi
->open_files
, list
) {
1405 if (ctx
->state
!= state
)
1407 get_nfs_open_context(ctx
);
1408 spin_unlock(&state
->inode
->i_lock
);
1411 spin_unlock(&state
->inode
->i_lock
);
1412 return ERR_PTR(-ENOENT
);
1415 static struct nfs4_opendata
*nfs4_open_recoverdata_alloc(struct nfs_open_context
*ctx
,
1416 struct nfs4_state
*state
, enum open_claim_type4 claim
)
1418 struct nfs4_opendata
*opendata
;
1420 opendata
= nfs4_opendata_alloc(ctx
->dentry
, state
->owner
, 0, 0,
1421 NULL
, NULL
, claim
, GFP_NOFS
);
1422 if (opendata
== NULL
)
1423 return ERR_PTR(-ENOMEM
);
1424 opendata
->state
= state
;
1425 atomic_inc(&state
->count
);
1429 static int nfs4_open_recover_helper(struct nfs4_opendata
*opendata
, fmode_t fmode
, struct nfs4_state
**res
)
1431 struct nfs4_state
*newstate
;
1434 opendata
->o_arg
.open_flags
= 0;
1435 opendata
->o_arg
.fmode
= fmode
;
1436 memset(&opendata
->o_res
, 0, sizeof(opendata
->o_res
));
1437 memset(&opendata
->c_res
, 0, sizeof(opendata
->c_res
));
1438 nfs4_init_opendata_res(opendata
);
1439 ret
= _nfs4_recover_proc_open(opendata
);
1442 newstate
= nfs4_opendata_to_nfs4_state(opendata
);
1443 if (IS_ERR(newstate
))
1444 return PTR_ERR(newstate
);
1445 nfs4_close_state(newstate
, fmode
);
1450 static int nfs4_open_recover(struct nfs4_opendata
*opendata
, struct nfs4_state
*state
)
1452 struct nfs4_state
*newstate
;
1455 /* memory barrier prior to reading state->n_* */
1456 clear_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1457 clear_bit(NFS_OPEN_STATE
, &state
->flags
);
1459 if (state
->n_rdwr
!= 0) {
1460 clear_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1461 ret
= nfs4_open_recover_helper(opendata
, FMODE_READ
|FMODE_WRITE
, &newstate
);
1464 if (newstate
!= state
)
1467 if (state
->n_wronly
!= 0) {
1468 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1469 ret
= nfs4_open_recover_helper(opendata
, FMODE_WRITE
, &newstate
);
1472 if (newstate
!= state
)
1475 if (state
->n_rdonly
!= 0) {
1476 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1477 ret
= nfs4_open_recover_helper(opendata
, FMODE_READ
, &newstate
);
1480 if (newstate
!= state
)
1484 * We may have performed cached opens for all three recoveries.
1485 * Check if we need to update the current stateid.
1487 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0 &&
1488 !nfs4_stateid_match(&state
->stateid
, &state
->open_stateid
)) {
1489 write_seqlock(&state
->seqlock
);
1490 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0)
1491 nfs4_stateid_copy(&state
->stateid
, &state
->open_stateid
);
1492 write_sequnlock(&state
->seqlock
);
1499 * reclaim state on the server after a reboot.
1501 static int _nfs4_do_open_reclaim(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1503 struct nfs_delegation
*delegation
;
1504 struct nfs4_opendata
*opendata
;
1505 fmode_t delegation_type
= 0;
1508 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
,
1509 NFS4_OPEN_CLAIM_PREVIOUS
);
1510 if (IS_ERR(opendata
))
1511 return PTR_ERR(opendata
);
1513 delegation
= rcu_dereference(NFS_I(state
->inode
)->delegation
);
1514 if (delegation
!= NULL
&& test_bit(NFS_DELEGATION_NEED_RECLAIM
, &delegation
->flags
) != 0)
1515 delegation_type
= delegation
->type
;
1517 opendata
->o_arg
.u
.delegation_type
= delegation_type
;
1518 status
= nfs4_open_recover(opendata
, state
);
1519 nfs4_opendata_put(opendata
);
1523 static int nfs4_do_open_reclaim(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1525 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1526 struct nfs4_exception exception
= { };
1529 err
= _nfs4_do_open_reclaim(ctx
, state
);
1530 trace_nfs4_open_reclaim(ctx
, 0, err
);
1531 if (nfs4_clear_cap_atomic_open_v1(server
, err
, &exception
))
1533 if (err
!= -NFS4ERR_DELAY
)
1535 nfs4_handle_exception(server
, err
, &exception
);
1536 } while (exception
.retry
);
1540 static int nfs4_open_reclaim(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
1542 struct nfs_open_context
*ctx
;
1545 ctx
= nfs4_state_find_open_context(state
);
1548 ret
= nfs4_do_open_reclaim(ctx
, state
);
1549 put_nfs_open_context(ctx
);
1553 static int nfs4_handle_delegation_recall_error(struct nfs_server
*server
, struct nfs4_state
*state
, const nfs4_stateid
*stateid
, int err
)
1557 printk(KERN_ERR
"NFS: %s: unhandled error "
1558 "%d.\n", __func__
, err
);
1563 case -NFS4ERR_BADSESSION
:
1564 case -NFS4ERR_BADSLOT
:
1565 case -NFS4ERR_BAD_HIGH_SLOT
:
1566 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
1567 case -NFS4ERR_DEADSESSION
:
1568 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1569 nfs4_schedule_session_recovery(server
->nfs_client
->cl_session
, err
);
1571 case -NFS4ERR_STALE_CLIENTID
:
1572 case -NFS4ERR_STALE_STATEID
:
1573 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1574 case -NFS4ERR_EXPIRED
:
1575 /* Don't recall a delegation if it was lost */
1576 nfs4_schedule_lease_recovery(server
->nfs_client
);
1578 case -NFS4ERR_MOVED
:
1579 nfs4_schedule_migration_recovery(server
);
1581 case -NFS4ERR_LEASE_MOVED
:
1582 nfs4_schedule_lease_moved_recovery(server
->nfs_client
);
1584 case -NFS4ERR_DELEG_REVOKED
:
1585 case -NFS4ERR_ADMIN_REVOKED
:
1586 case -NFS4ERR_BAD_STATEID
:
1587 case -NFS4ERR_OPENMODE
:
1588 nfs_inode_find_state_and_recover(state
->inode
,
1590 nfs4_schedule_stateid_recovery(server
, state
);
1592 case -NFS4ERR_DELAY
:
1593 case -NFS4ERR_GRACE
:
1594 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1598 case -NFS4ERR_DENIED
:
1599 /* kill_proc(fl->fl_pid, SIGLOST, 1); */
1605 int nfs4_open_delegation_recall(struct nfs_open_context
*ctx
, struct nfs4_state
*state
, const nfs4_stateid
*stateid
)
1607 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1608 struct nfs4_opendata
*opendata
;
1611 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
,
1612 NFS4_OPEN_CLAIM_DELEG_CUR_FH
);
1613 if (IS_ERR(opendata
))
1614 return PTR_ERR(opendata
);
1615 nfs4_stateid_copy(&opendata
->o_arg
.u
.delegation
, stateid
);
1616 err
= nfs4_open_recover(opendata
, state
);
1617 nfs4_opendata_put(opendata
);
1618 return nfs4_handle_delegation_recall_error(server
, state
, stateid
, err
);
1621 static void nfs4_open_confirm_prepare(struct rpc_task
*task
, void *calldata
)
1623 struct nfs4_opendata
*data
= calldata
;
1625 nfs40_setup_sequence(data
->o_arg
.server
, &data
->o_arg
.seq_args
,
1626 &data
->o_res
.seq_res
, task
);
1629 static void nfs4_open_confirm_done(struct rpc_task
*task
, void *calldata
)
1631 struct nfs4_opendata
*data
= calldata
;
1633 nfs40_sequence_done(task
, &data
->o_res
.seq_res
);
1635 data
->rpc_status
= task
->tk_status
;
1636 if (data
->rpc_status
== 0) {
1637 nfs4_stateid_copy(&data
->o_res
.stateid
, &data
->c_res
.stateid
);
1638 nfs_confirm_seqid(&data
->owner
->so_seqid
, 0);
1639 renew_lease(data
->o_res
.server
, data
->timestamp
);
1644 static void nfs4_open_confirm_release(void *calldata
)
1646 struct nfs4_opendata
*data
= calldata
;
1647 struct nfs4_state
*state
= NULL
;
1649 /* If this request hasn't been cancelled, do nothing */
1650 if (data
->cancelled
== 0)
1652 /* In case of error, no cleanup! */
1653 if (!data
->rpc_done
)
1655 state
= nfs4_opendata_to_nfs4_state(data
);
1657 nfs4_close_state(state
, data
->o_arg
.fmode
);
1659 nfs4_opendata_put(data
);
1662 static const struct rpc_call_ops nfs4_open_confirm_ops
= {
1663 .rpc_call_prepare
= nfs4_open_confirm_prepare
,
1664 .rpc_call_done
= nfs4_open_confirm_done
,
1665 .rpc_release
= nfs4_open_confirm_release
,
1669 * Note: On error, nfs4_proc_open_confirm will free the struct nfs4_opendata
1671 static int _nfs4_proc_open_confirm(struct nfs4_opendata
*data
)
1673 struct nfs_server
*server
= NFS_SERVER(data
->dir
->d_inode
);
1674 struct rpc_task
*task
;
1675 struct rpc_message msg
= {
1676 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_CONFIRM
],
1677 .rpc_argp
= &data
->c_arg
,
1678 .rpc_resp
= &data
->c_res
,
1679 .rpc_cred
= data
->owner
->so_cred
,
1681 struct rpc_task_setup task_setup_data
= {
1682 .rpc_client
= server
->client
,
1683 .rpc_message
= &msg
,
1684 .callback_ops
= &nfs4_open_confirm_ops
,
1685 .callback_data
= data
,
1686 .workqueue
= nfsiod_workqueue
,
1687 .flags
= RPC_TASK_ASYNC
,
1691 nfs4_init_sequence(&data
->o_arg
.seq_args
, &data
->o_res
.seq_res
, 1);
1692 kref_get(&data
->kref
);
1694 data
->rpc_status
= 0;
1695 data
->timestamp
= jiffies
;
1696 task
= rpc_run_task(&task_setup_data
);
1698 return PTR_ERR(task
);
1699 status
= nfs4_wait_for_completion_rpc_task(task
);
1701 data
->cancelled
= 1;
1704 status
= data
->rpc_status
;
1709 static void nfs4_open_prepare(struct rpc_task
*task
, void *calldata
)
1711 struct nfs4_opendata
*data
= calldata
;
1712 struct nfs4_state_owner
*sp
= data
->owner
;
1713 struct nfs_client
*clp
= sp
->so_server
->nfs_client
;
1715 if (nfs_wait_on_sequence(data
->o_arg
.seqid
, task
) != 0)
1718 * Check if we still need to send an OPEN call, or if we can use
1719 * a delegation instead.
1721 if (data
->state
!= NULL
) {
1722 struct nfs_delegation
*delegation
;
1724 if (can_open_cached(data
->state
, data
->o_arg
.fmode
, data
->o_arg
.open_flags
))
1727 delegation
= rcu_dereference(NFS_I(data
->state
->inode
)->delegation
);
1728 if (data
->o_arg
.claim
!= NFS4_OPEN_CLAIM_DELEGATE_CUR
&&
1729 data
->o_arg
.claim
!= NFS4_OPEN_CLAIM_DELEG_CUR_FH
&&
1730 can_open_delegated(delegation
, data
->o_arg
.fmode
))
1731 goto unlock_no_action
;
1734 /* Update client id. */
1735 data
->o_arg
.clientid
= clp
->cl_clientid
;
1736 switch (data
->o_arg
.claim
) {
1737 case NFS4_OPEN_CLAIM_PREVIOUS
:
1738 case NFS4_OPEN_CLAIM_DELEG_CUR_FH
:
1739 case NFS4_OPEN_CLAIM_DELEG_PREV_FH
:
1740 data
->o_arg
.open_bitmap
= &nfs4_open_noattr_bitmap
[0];
1741 case NFS4_OPEN_CLAIM_FH
:
1742 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_NOATTR
];
1743 nfs_copy_fh(&data
->o_res
.fh
, data
->o_arg
.fh
);
1745 data
->timestamp
= jiffies
;
1746 if (nfs4_setup_sequence(data
->o_arg
.server
,
1747 &data
->o_arg
.seq_args
,
1748 &data
->o_res
.seq_res
,
1750 nfs_release_seqid(data
->o_arg
.seqid
);
1752 /* Set the create mode (note dependency on the session type) */
1753 data
->o_arg
.createmode
= NFS4_CREATE_UNCHECKED
;
1754 if (data
->o_arg
.open_flags
& O_EXCL
) {
1755 data
->o_arg
.createmode
= NFS4_CREATE_EXCLUSIVE
;
1756 if (nfs4_has_persistent_session(clp
))
1757 data
->o_arg
.createmode
= NFS4_CREATE_GUARDED
;
1758 else if (clp
->cl_mvops
->minor_version
> 0)
1759 data
->o_arg
.createmode
= NFS4_CREATE_EXCLUSIVE4_1
;
1765 task
->tk_action
= NULL
;
1767 nfs4_sequence_done(task
, &data
->o_res
.seq_res
);
1770 static void nfs4_open_done(struct rpc_task
*task
, void *calldata
)
1772 struct nfs4_opendata
*data
= calldata
;
1774 data
->rpc_status
= task
->tk_status
;
1776 if (!nfs4_sequence_done(task
, &data
->o_res
.seq_res
))
1779 if (task
->tk_status
== 0) {
1780 if (data
->o_res
.f_attr
->valid
& NFS_ATTR_FATTR_TYPE
) {
1781 switch (data
->o_res
.f_attr
->mode
& S_IFMT
) {
1785 data
->rpc_status
= -ELOOP
;
1788 data
->rpc_status
= -EISDIR
;
1791 data
->rpc_status
= -ENOTDIR
;
1794 renew_lease(data
->o_res
.server
, data
->timestamp
);
1795 if (!(data
->o_res
.rflags
& NFS4_OPEN_RESULT_CONFIRM
))
1796 nfs_confirm_seqid(&data
->owner
->so_seqid
, 0);
1801 static void nfs4_open_release(void *calldata
)
1803 struct nfs4_opendata
*data
= calldata
;
1804 struct nfs4_state
*state
= NULL
;
1806 /* If this request hasn't been cancelled, do nothing */
1807 if (data
->cancelled
== 0)
1809 /* In case of error, no cleanup! */
1810 if (data
->rpc_status
!= 0 || !data
->rpc_done
)
1812 /* In case we need an open_confirm, no cleanup! */
1813 if (data
->o_res
.rflags
& NFS4_OPEN_RESULT_CONFIRM
)
1815 state
= nfs4_opendata_to_nfs4_state(data
);
1817 nfs4_close_state(state
, data
->o_arg
.fmode
);
1819 nfs4_opendata_put(data
);
1822 static const struct rpc_call_ops nfs4_open_ops
= {
1823 .rpc_call_prepare
= nfs4_open_prepare
,
1824 .rpc_call_done
= nfs4_open_done
,
1825 .rpc_release
= nfs4_open_release
,
1828 static int nfs4_run_open_task(struct nfs4_opendata
*data
, int isrecover
)
1830 struct inode
*dir
= data
->dir
->d_inode
;
1831 struct nfs_server
*server
= NFS_SERVER(dir
);
1832 struct nfs_openargs
*o_arg
= &data
->o_arg
;
1833 struct nfs_openres
*o_res
= &data
->o_res
;
1834 struct rpc_task
*task
;
1835 struct rpc_message msg
= {
1836 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN
],
1839 .rpc_cred
= data
->owner
->so_cred
,
1841 struct rpc_task_setup task_setup_data
= {
1842 .rpc_client
= server
->client
,
1843 .rpc_message
= &msg
,
1844 .callback_ops
= &nfs4_open_ops
,
1845 .callback_data
= data
,
1846 .workqueue
= nfsiod_workqueue
,
1847 .flags
= RPC_TASK_ASYNC
,
1851 nfs4_init_sequence(&o_arg
->seq_args
, &o_res
->seq_res
, 1);
1852 kref_get(&data
->kref
);
1854 data
->rpc_status
= 0;
1855 data
->cancelled
= 0;
1856 data
->is_recover
= 0;
1858 nfs4_set_sequence_privileged(&o_arg
->seq_args
);
1859 data
->is_recover
= 1;
1861 task
= rpc_run_task(&task_setup_data
);
1863 return PTR_ERR(task
);
1864 status
= nfs4_wait_for_completion_rpc_task(task
);
1866 data
->cancelled
= 1;
1869 status
= data
->rpc_status
;
1875 static int _nfs4_recover_proc_open(struct nfs4_opendata
*data
)
1877 struct inode
*dir
= data
->dir
->d_inode
;
1878 struct nfs_openres
*o_res
= &data
->o_res
;
1881 status
= nfs4_run_open_task(data
, 1);
1882 if (status
!= 0 || !data
->rpc_done
)
1885 nfs_fattr_map_and_free_names(NFS_SERVER(dir
), &data
->f_attr
);
1887 if (o_res
->rflags
& NFS4_OPEN_RESULT_CONFIRM
) {
1888 status
= _nfs4_proc_open_confirm(data
);
1896 static int nfs4_opendata_access(struct rpc_cred
*cred
,
1897 struct nfs4_opendata
*opendata
,
1898 struct nfs4_state
*state
, fmode_t fmode
,
1901 struct nfs_access_entry cache
;
1904 /* access call failed or for some reason the server doesn't
1905 * support any access modes -- defer access call until later */
1906 if (opendata
->o_res
.access_supported
== 0)
1910 /* don't check MAY_WRITE - a newly created file may not have
1911 * write mode bits, but POSIX allows the creating process to write.
1912 * use openflags to check for exec, because fmode won't
1913 * always have FMODE_EXEC set when file open for exec. */
1914 if (openflags
& __FMODE_EXEC
) {
1915 /* ONLY check for exec rights */
1917 } else if (fmode
& FMODE_READ
)
1921 cache
.jiffies
= jiffies
;
1922 nfs_access_set_mask(&cache
, opendata
->o_res
.access_result
);
1923 nfs_access_add_cache(state
->inode
, &cache
);
1925 if ((mask
& ~cache
.mask
& (MAY_READ
| MAY_EXEC
)) == 0)
1928 /* even though OPEN succeeded, access is denied. Close the file */
1929 nfs4_close_state(state
, fmode
);
1934 * Note: On error, nfs4_proc_open will free the struct nfs4_opendata
1936 static int _nfs4_proc_open(struct nfs4_opendata
*data
)
1938 struct inode
*dir
= data
->dir
->d_inode
;
1939 struct nfs_server
*server
= NFS_SERVER(dir
);
1940 struct nfs_openargs
*o_arg
= &data
->o_arg
;
1941 struct nfs_openres
*o_res
= &data
->o_res
;
1944 status
= nfs4_run_open_task(data
, 0);
1945 if (!data
->rpc_done
)
1948 if (status
== -NFS4ERR_BADNAME
&&
1949 !(o_arg
->open_flags
& O_CREAT
))
1954 nfs_fattr_map_and_free_names(server
, &data
->f_attr
);
1956 if (o_arg
->open_flags
& O_CREAT
) {
1957 update_changeattr(dir
, &o_res
->cinfo
);
1958 if (o_arg
->open_flags
& O_EXCL
)
1959 data
->file_created
= 1;
1960 else if (o_res
->cinfo
.before
!= o_res
->cinfo
.after
)
1961 data
->file_created
= 1;
1963 if ((o_res
->rflags
& NFS4_OPEN_RESULT_LOCKTYPE_POSIX
) == 0)
1964 server
->caps
&= ~NFS_CAP_POSIX_LOCK
;
1965 if(o_res
->rflags
& NFS4_OPEN_RESULT_CONFIRM
) {
1966 status
= _nfs4_proc_open_confirm(data
);
1970 if (!(o_res
->f_attr
->valid
& NFS_ATTR_FATTR
))
1971 _nfs4_proc_getattr(server
, &o_res
->fh
, o_res
->f_attr
, o_res
->f_label
);
1975 static int nfs4_recover_expired_lease(struct nfs_server
*server
)
1977 return nfs4_client_recover_expired_lease(server
->nfs_client
);
1982 * reclaim state on the server after a network partition.
1983 * Assumes caller holds the appropriate lock
1985 static int _nfs4_open_expired(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1987 struct nfs4_opendata
*opendata
;
1990 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
,
1991 NFS4_OPEN_CLAIM_FH
);
1992 if (IS_ERR(opendata
))
1993 return PTR_ERR(opendata
);
1994 ret
= nfs4_open_recover(opendata
, state
);
1996 d_drop(ctx
->dentry
);
1997 nfs4_opendata_put(opendata
);
2001 static int nfs4_do_open_expired(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
2003 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
2004 struct nfs4_exception exception
= { };
2008 err
= _nfs4_open_expired(ctx
, state
);
2009 trace_nfs4_open_expired(ctx
, 0, err
);
2010 if (nfs4_clear_cap_atomic_open_v1(server
, err
, &exception
))
2015 case -NFS4ERR_GRACE
:
2016 case -NFS4ERR_DELAY
:
2017 nfs4_handle_exception(server
, err
, &exception
);
2020 } while (exception
.retry
);
2025 static int nfs4_open_expired(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
2027 struct nfs_open_context
*ctx
;
2030 ctx
= nfs4_state_find_open_context(state
);
2033 ret
= nfs4_do_open_expired(ctx
, state
);
2034 put_nfs_open_context(ctx
);
2038 #if defined(CONFIG_NFS_V4_1)
2039 static void nfs41_clear_delegation_stateid(struct nfs4_state
*state
)
2041 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
2042 nfs4_stateid
*stateid
= &state
->stateid
;
2043 struct nfs_delegation
*delegation
;
2044 struct rpc_cred
*cred
= NULL
;
2045 int status
= -NFS4ERR_BAD_STATEID
;
2047 /* If a state reset has been done, test_stateid is unneeded */
2048 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0)
2051 /* Get the delegation credential for use by test/free_stateid */
2053 delegation
= rcu_dereference(NFS_I(state
->inode
)->delegation
);
2054 if (delegation
!= NULL
&&
2055 nfs4_stateid_match(&delegation
->stateid
, stateid
)) {
2056 cred
= get_rpccred(delegation
->cred
);
2058 status
= nfs41_test_stateid(server
, stateid
, cred
);
2059 trace_nfs4_test_delegation_stateid(state
, NULL
, status
);
2063 if (status
!= NFS_OK
) {
2064 /* Free the stateid unless the server explicitly
2065 * informs us the stateid is unrecognized. */
2066 if (status
!= -NFS4ERR_BAD_STATEID
)
2067 nfs41_free_stateid(server
, stateid
, cred
);
2068 nfs_remove_bad_delegation(state
->inode
);
2070 write_seqlock(&state
->seqlock
);
2071 nfs4_stateid_copy(&state
->stateid
, &state
->open_stateid
);
2072 write_sequnlock(&state
->seqlock
);
2073 clear_bit(NFS_DELEGATED_STATE
, &state
->flags
);
2081 * nfs41_check_open_stateid - possibly free an open stateid
2083 * @state: NFSv4 state for an inode
2085 * Returns NFS_OK if recovery for this stateid is now finished.
2086 * Otherwise a negative NFS4ERR value is returned.
2088 static int nfs41_check_open_stateid(struct nfs4_state
*state
)
2090 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
2091 nfs4_stateid
*stateid
= &state
->open_stateid
;
2092 struct rpc_cred
*cred
= state
->owner
->so_cred
;
2095 /* If a state reset has been done, test_stateid is unneeded */
2096 if ((test_bit(NFS_O_RDONLY_STATE
, &state
->flags
) == 0) &&
2097 (test_bit(NFS_O_WRONLY_STATE
, &state
->flags
) == 0) &&
2098 (test_bit(NFS_O_RDWR_STATE
, &state
->flags
) == 0))
2099 return -NFS4ERR_BAD_STATEID
;
2101 status
= nfs41_test_stateid(server
, stateid
, cred
);
2102 trace_nfs4_test_open_stateid(state
, NULL
, status
);
2103 if (status
!= NFS_OK
) {
2104 /* Free the stateid unless the server explicitly
2105 * informs us the stateid is unrecognized. */
2106 if (status
!= -NFS4ERR_BAD_STATEID
)
2107 nfs41_free_stateid(server
, stateid
, cred
);
2109 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
2110 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
2111 clear_bit(NFS_O_RDWR_STATE
, &state
->flags
);
2112 clear_bit(NFS_OPEN_STATE
, &state
->flags
);
2117 static int nfs41_open_expired(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
2121 nfs41_clear_delegation_stateid(state
);
2122 status
= nfs41_check_open_stateid(state
);
2123 if (status
!= NFS_OK
)
2124 status
= nfs4_open_expired(sp
, state
);
2130 * on an EXCLUSIVE create, the server should send back a bitmask with FATTR4-*
2131 * fields corresponding to attributes that were used to store the verifier.
2132 * Make sure we clobber those fields in the later setattr call
2134 static inline void nfs4_exclusive_attrset(struct nfs4_opendata
*opendata
, struct iattr
*sattr
)
2136 if ((opendata
->o_res
.attrset
[1] & FATTR4_WORD1_TIME_ACCESS
) &&
2137 !(sattr
->ia_valid
& ATTR_ATIME_SET
))
2138 sattr
->ia_valid
|= ATTR_ATIME
;
2140 if ((opendata
->o_res
.attrset
[1] & FATTR4_WORD1_TIME_MODIFY
) &&
2141 !(sattr
->ia_valid
& ATTR_MTIME_SET
))
2142 sattr
->ia_valid
|= ATTR_MTIME
;
2145 static int _nfs4_open_and_get_state(struct nfs4_opendata
*opendata
,
2148 struct nfs_open_context
*ctx
)
2150 struct nfs4_state_owner
*sp
= opendata
->owner
;
2151 struct nfs_server
*server
= sp
->so_server
;
2152 struct dentry
*dentry
;
2153 struct nfs4_state
*state
;
2157 seq
= raw_seqcount_begin(&sp
->so_reclaim_seqcount
);
2159 ret
= _nfs4_proc_open(opendata
);
2163 state
= nfs4_opendata_to_nfs4_state(opendata
);
2164 ret
= PTR_ERR(state
);
2167 if (server
->caps
& NFS_CAP_POSIX_LOCK
)
2168 set_bit(NFS_STATE_POSIX_LOCKS
, &state
->flags
);
2170 dentry
= opendata
->dentry
;
2171 if (dentry
->d_inode
== NULL
) {
2172 /* FIXME: Is this d_drop() ever needed? */
2174 dentry
= d_add_unique(dentry
, igrab(state
->inode
));
2175 if (dentry
== NULL
) {
2176 dentry
= opendata
->dentry
;
2177 } else if (dentry
!= ctx
->dentry
) {
2179 ctx
->dentry
= dget(dentry
);
2181 nfs_set_verifier(dentry
,
2182 nfs_save_change_attribute(opendata
->dir
->d_inode
));
2185 ret
= nfs4_opendata_access(sp
->so_cred
, opendata
, state
, fmode
, flags
);
2190 if (dentry
->d_inode
== state
->inode
) {
2191 nfs_inode_attach_open_context(ctx
);
2192 if (read_seqcount_retry(&sp
->so_reclaim_seqcount
, seq
))
2193 nfs4_schedule_stateid_recovery(server
, state
);
2200 * Returns a referenced nfs4_state
2202 static int _nfs4_do_open(struct inode
*dir
,
2203 struct nfs_open_context
*ctx
,
2205 struct iattr
*sattr
,
2206 struct nfs4_label
*label
,
2209 struct nfs4_state_owner
*sp
;
2210 struct nfs4_state
*state
= NULL
;
2211 struct nfs_server
*server
= NFS_SERVER(dir
);
2212 struct nfs4_opendata
*opendata
;
2213 struct dentry
*dentry
= ctx
->dentry
;
2214 struct rpc_cred
*cred
= ctx
->cred
;
2215 struct nfs4_threshold
**ctx_th
= &ctx
->mdsthreshold
;
2216 fmode_t fmode
= ctx
->mode
& (FMODE_READ
|FMODE_WRITE
|FMODE_EXEC
);
2217 enum open_claim_type4 claim
= NFS4_OPEN_CLAIM_NULL
;
2218 struct nfs4_label
*olabel
= NULL
;
2221 /* Protect against reboot recovery conflicts */
2223 sp
= nfs4_get_state_owner(server
, cred
, GFP_KERNEL
);
2225 dprintk("nfs4_do_open: nfs4_get_state_owner failed!\n");
2228 status
= nfs4_recover_expired_lease(server
);
2230 goto err_put_state_owner
;
2231 if (dentry
->d_inode
!= NULL
)
2232 nfs4_return_incompatible_delegation(dentry
->d_inode
, fmode
);
2234 if (dentry
->d_inode
)
2235 claim
= NFS4_OPEN_CLAIM_FH
;
2236 opendata
= nfs4_opendata_alloc(dentry
, sp
, fmode
, flags
, sattr
,
2237 label
, claim
, GFP_KERNEL
);
2238 if (opendata
== NULL
)
2239 goto err_put_state_owner
;
2242 olabel
= nfs4_label_alloc(server
, GFP_KERNEL
);
2243 if (IS_ERR(olabel
)) {
2244 status
= PTR_ERR(olabel
);
2245 goto err_opendata_put
;
2249 if (ctx_th
&& server
->attr_bitmask
[2] & FATTR4_WORD2_MDSTHRESHOLD
) {
2250 opendata
->f_attr
.mdsthreshold
= pnfs_mdsthreshold_alloc();
2251 if (!opendata
->f_attr
.mdsthreshold
)
2252 goto err_free_label
;
2253 opendata
->o_arg
.open_bitmap
= &nfs4_pnfs_open_bitmap
[0];
2255 if (dentry
->d_inode
!= NULL
)
2256 opendata
->state
= nfs4_get_open_state(dentry
->d_inode
, sp
);
2258 status
= _nfs4_open_and_get_state(opendata
, fmode
, flags
, ctx
);
2260 goto err_free_label
;
2263 if ((opendata
->o_arg
.open_flags
& O_EXCL
) &&
2264 (opendata
->o_arg
.createmode
!= NFS4_CREATE_GUARDED
)) {
2265 nfs4_exclusive_attrset(opendata
, sattr
);
2267 nfs_fattr_init(opendata
->o_res
.f_attr
);
2268 status
= nfs4_do_setattr(state
->inode
, cred
,
2269 opendata
->o_res
.f_attr
, sattr
,
2270 state
, label
, olabel
);
2272 nfs_setattr_update_inode(state
->inode
, sattr
);
2273 nfs_post_op_update_inode(state
->inode
, opendata
->o_res
.f_attr
);
2274 nfs_setsecurity(state
->inode
, opendata
->o_res
.f_attr
, olabel
);
2277 if (opendata
->file_created
)
2278 *opened
|= FILE_CREATED
;
2280 if (pnfs_use_threshold(ctx_th
, opendata
->f_attr
.mdsthreshold
, server
))
2281 *ctx_th
= opendata
->f_attr
.mdsthreshold
;
2283 kfree(opendata
->f_attr
.mdsthreshold
);
2284 opendata
->f_attr
.mdsthreshold
= NULL
;
2286 nfs4_label_free(olabel
);
2288 nfs4_opendata_put(opendata
);
2289 nfs4_put_state_owner(sp
);
2292 nfs4_label_free(olabel
);
2294 kfree(opendata
->f_attr
.mdsthreshold
);
2295 nfs4_opendata_put(opendata
);
2296 err_put_state_owner
:
2297 nfs4_put_state_owner(sp
);
2303 static struct nfs4_state
*nfs4_do_open(struct inode
*dir
,
2304 struct nfs_open_context
*ctx
,
2306 struct iattr
*sattr
,
2307 struct nfs4_label
*label
,
2310 struct nfs_server
*server
= NFS_SERVER(dir
);
2311 struct nfs4_exception exception
= { };
2312 struct nfs4_state
*res
;
2316 status
= _nfs4_do_open(dir
, ctx
, flags
, sattr
, label
, opened
);
2318 trace_nfs4_open_file(ctx
, flags
, status
);
2321 /* NOTE: BAD_SEQID means the server and client disagree about the
2322 * book-keeping w.r.t. state-changing operations
2323 * (OPEN/CLOSE/LOCK/LOCKU...)
2324 * It is actually a sign of a bug on the client or on the server.
2326 * If we receive a BAD_SEQID error in the particular case of
2327 * doing an OPEN, we assume that nfs_increment_open_seqid() will
2328 * have unhashed the old state_owner for us, and that we can
2329 * therefore safely retry using a new one. We should still warn
2330 * the user though...
2332 if (status
== -NFS4ERR_BAD_SEQID
) {
2333 pr_warn_ratelimited("NFS: v4 server %s "
2334 " returned a bad sequence-id error!\n",
2335 NFS_SERVER(dir
)->nfs_client
->cl_hostname
);
2336 exception
.retry
= 1;
2340 * BAD_STATEID on OPEN means that the server cancelled our
2341 * state before it received the OPEN_CONFIRM.
2342 * Recover by retrying the request as per the discussion
2343 * on Page 181 of RFC3530.
2345 if (status
== -NFS4ERR_BAD_STATEID
) {
2346 exception
.retry
= 1;
2349 if (status
== -EAGAIN
) {
2350 /* We must have found a delegation */
2351 exception
.retry
= 1;
2354 if (nfs4_clear_cap_atomic_open_v1(server
, status
, &exception
))
2356 res
= ERR_PTR(nfs4_handle_exception(server
,
2357 status
, &exception
));
2358 } while (exception
.retry
);
2362 static int _nfs4_do_setattr(struct inode
*inode
, struct rpc_cred
*cred
,
2363 struct nfs_fattr
*fattr
, struct iattr
*sattr
,
2364 struct nfs4_state
*state
, struct nfs4_label
*ilabel
,
2365 struct nfs4_label
*olabel
)
2367 struct nfs_server
*server
= NFS_SERVER(inode
);
2368 struct nfs_setattrargs arg
= {
2369 .fh
= NFS_FH(inode
),
2372 .bitmask
= server
->attr_bitmask
,
2375 struct nfs_setattrres res
= {
2380 struct rpc_message msg
= {
2381 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETATTR
],
2386 unsigned long timestamp
= jiffies
;
2391 arg
.bitmask
= nfs4_bitmask(server
, ilabel
);
2393 arg
.bitmask
= nfs4_bitmask(server
, olabel
);
2395 nfs_fattr_init(fattr
);
2397 /* Servers should only apply open mode checks for file size changes */
2398 truncate
= (sattr
->ia_valid
& ATTR_SIZE
) ? true : false;
2399 fmode
= truncate
? FMODE_WRITE
: FMODE_READ
;
2401 if (nfs4_copy_delegation_stateid(&arg
.stateid
, inode
, fmode
)) {
2402 /* Use that stateid */
2403 } else if (truncate
&& state
!= NULL
&& nfs4_valid_open_stateid(state
)) {
2404 struct nfs_lockowner lockowner
= {
2405 .l_owner
= current
->files
,
2406 .l_pid
= current
->tgid
,
2408 nfs4_select_rw_stateid(&arg
.stateid
, state
, FMODE_WRITE
,
2411 nfs4_stateid_copy(&arg
.stateid
, &zero_stateid
);
2413 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
2414 if (status
== 0 && state
!= NULL
)
2415 renew_lease(server
, timestamp
);
2419 static int nfs4_do_setattr(struct inode
*inode
, struct rpc_cred
*cred
,
2420 struct nfs_fattr
*fattr
, struct iattr
*sattr
,
2421 struct nfs4_state
*state
, struct nfs4_label
*ilabel
,
2422 struct nfs4_label
*olabel
)
2424 struct nfs_server
*server
= NFS_SERVER(inode
);
2425 struct nfs4_exception exception
= {
2431 err
= _nfs4_do_setattr(inode
, cred
, fattr
, sattr
, state
, ilabel
, olabel
);
2432 trace_nfs4_setattr(inode
, err
);
2434 case -NFS4ERR_OPENMODE
:
2435 if (!(sattr
->ia_valid
& ATTR_SIZE
)) {
2436 pr_warn_once("NFSv4: server %s is incorrectly "
2437 "applying open mode checks to "
2438 "a SETATTR that is not "
2439 "changing file size.\n",
2440 server
->nfs_client
->cl_hostname
);
2442 if (state
&& !(state
->state
& FMODE_WRITE
)) {
2444 if (sattr
->ia_valid
& ATTR_OPEN
)
2449 err
= nfs4_handle_exception(server
, err
, &exception
);
2450 } while (exception
.retry
);
2455 struct nfs4_closedata
{
2456 struct inode
*inode
;
2457 struct nfs4_state
*state
;
2458 struct nfs_closeargs arg
;
2459 struct nfs_closeres res
;
2460 struct nfs_fattr fattr
;
2461 unsigned long timestamp
;
2466 static void nfs4_free_closedata(void *data
)
2468 struct nfs4_closedata
*calldata
= data
;
2469 struct nfs4_state_owner
*sp
= calldata
->state
->owner
;
2470 struct super_block
*sb
= calldata
->state
->inode
->i_sb
;
2473 pnfs_roc_release(calldata
->state
->inode
);
2474 nfs4_put_open_state(calldata
->state
);
2475 nfs_free_seqid(calldata
->arg
.seqid
);
2476 nfs4_put_state_owner(sp
);
2477 nfs_sb_deactive(sb
);
2481 static void nfs4_close_clear_stateid_flags(struct nfs4_state
*state
,
2484 spin_lock(&state
->owner
->so_lock
);
2485 clear_bit(NFS_O_RDWR_STATE
, &state
->flags
);
2486 switch (fmode
& (FMODE_READ
|FMODE_WRITE
)) {
2488 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
2491 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
2494 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
2495 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
2496 clear_bit(NFS_OPEN_STATE
, &state
->flags
);
2498 spin_unlock(&state
->owner
->so_lock
);
2501 static void nfs4_close_done(struct rpc_task
*task
, void *data
)
2503 struct nfs4_closedata
*calldata
= data
;
2504 struct nfs4_state
*state
= calldata
->state
;
2505 struct nfs_server
*server
= NFS_SERVER(calldata
->inode
);
2507 dprintk("%s: begin!\n", __func__
);
2508 if (!nfs4_sequence_done(task
, &calldata
->res
.seq_res
))
2510 trace_nfs4_close(state
, &calldata
->arg
, &calldata
->res
, task
->tk_status
);
2511 /* hmm. we are done with the inode, and in the process of freeing
2512 * the state_owner. we keep this around to process errors
2514 switch (task
->tk_status
) {
2517 pnfs_roc_set_barrier(state
->inode
,
2518 calldata
->roc_barrier
);
2519 nfs_set_open_stateid(state
, &calldata
->res
.stateid
, 0);
2520 renew_lease(server
, calldata
->timestamp
);
2522 case -NFS4ERR_ADMIN_REVOKED
:
2523 case -NFS4ERR_STALE_STATEID
:
2524 case -NFS4ERR_OLD_STATEID
:
2525 case -NFS4ERR_BAD_STATEID
:
2526 case -NFS4ERR_EXPIRED
:
2527 if (calldata
->arg
.fmode
== 0)
2530 if (nfs4_async_handle_error(task
, server
, state
) == -EAGAIN
) {
2531 rpc_restart_call_prepare(task
);
2535 nfs4_close_clear_stateid_flags(state
, calldata
->arg
.fmode
);
2537 nfs_release_seqid(calldata
->arg
.seqid
);
2538 nfs_refresh_inode(calldata
->inode
, calldata
->res
.fattr
);
2539 dprintk("%s: done, ret = %d!\n", __func__
, task
->tk_status
);
2542 static void nfs4_close_prepare(struct rpc_task
*task
, void *data
)
2544 struct nfs4_closedata
*calldata
= data
;
2545 struct nfs4_state
*state
= calldata
->state
;
2546 struct inode
*inode
= calldata
->inode
;
2549 dprintk("%s: begin!\n", __func__
);
2550 if (nfs_wait_on_sequence(calldata
->arg
.seqid
, task
) != 0)
2553 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_DOWNGRADE
];
2554 calldata
->arg
.fmode
= FMODE_READ
|FMODE_WRITE
;
2555 spin_lock(&state
->owner
->so_lock
);
2556 /* Calculate the change in open mode */
2557 if (state
->n_rdwr
== 0) {
2558 if (state
->n_rdonly
== 0) {
2559 call_close
|= test_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
2560 call_close
|= test_bit(NFS_O_RDWR_STATE
, &state
->flags
);
2561 calldata
->arg
.fmode
&= ~FMODE_READ
;
2563 if (state
->n_wronly
== 0) {
2564 call_close
|= test_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
2565 call_close
|= test_bit(NFS_O_RDWR_STATE
, &state
->flags
);
2566 calldata
->arg
.fmode
&= ~FMODE_WRITE
;
2569 if (!nfs4_valid_open_stateid(state
))
2571 spin_unlock(&state
->owner
->so_lock
);
2574 /* Note: exit _without_ calling nfs4_close_done */
2578 if (calldata
->arg
.fmode
== 0) {
2579 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CLOSE
];
2580 if (calldata
->roc
&&
2581 pnfs_roc_drain(inode
, &calldata
->roc_barrier
, task
)) {
2582 nfs_release_seqid(calldata
->arg
.seqid
);
2587 nfs_fattr_init(calldata
->res
.fattr
);
2588 calldata
->timestamp
= jiffies
;
2589 if (nfs4_setup_sequence(NFS_SERVER(inode
),
2590 &calldata
->arg
.seq_args
,
2591 &calldata
->res
.seq_res
,
2593 nfs_release_seqid(calldata
->arg
.seqid
);
2594 dprintk("%s: done!\n", __func__
);
2597 task
->tk_action
= NULL
;
2599 nfs4_sequence_done(task
, &calldata
->res
.seq_res
);
2602 static const struct rpc_call_ops nfs4_close_ops
= {
2603 .rpc_call_prepare
= nfs4_close_prepare
,
2604 .rpc_call_done
= nfs4_close_done
,
2605 .rpc_release
= nfs4_free_closedata
,
2609 * It is possible for data to be read/written from a mem-mapped file
2610 * after the sys_close call (which hits the vfs layer as a flush).
2611 * This means that we can't safely call nfsv4 close on a file until
2612 * the inode is cleared. This in turn means that we are not good
2613 * NFSv4 citizens - we do not indicate to the server to update the file's
2614 * share state even when we are done with one of the three share
2615 * stateid's in the inode.
2617 * NOTE: Caller must be holding the sp->so_owner semaphore!
2619 int nfs4_do_close(struct nfs4_state
*state
, gfp_t gfp_mask
, int wait
)
2621 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
2622 struct nfs4_closedata
*calldata
;
2623 struct nfs4_state_owner
*sp
= state
->owner
;
2624 struct rpc_task
*task
;
2625 struct rpc_message msg
= {
2626 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CLOSE
],
2627 .rpc_cred
= state
->owner
->so_cred
,
2629 struct rpc_task_setup task_setup_data
= {
2630 .rpc_client
= server
->client
,
2631 .rpc_message
= &msg
,
2632 .callback_ops
= &nfs4_close_ops
,
2633 .workqueue
= nfsiod_workqueue
,
2634 .flags
= RPC_TASK_ASYNC
,
2636 int status
= -ENOMEM
;
2638 nfs4_state_protect(server
->nfs_client
, NFS_SP4_MACH_CRED_CLEANUP
,
2639 &task_setup_data
.rpc_client
, &msg
);
2641 calldata
= kzalloc(sizeof(*calldata
), gfp_mask
);
2642 if (calldata
== NULL
)
2644 nfs4_init_sequence(&calldata
->arg
.seq_args
, &calldata
->res
.seq_res
, 1);
2645 calldata
->inode
= state
->inode
;
2646 calldata
->state
= state
;
2647 calldata
->arg
.fh
= NFS_FH(state
->inode
);
2648 calldata
->arg
.stateid
= &state
->open_stateid
;
2649 /* Serialization for the sequence id */
2650 calldata
->arg
.seqid
= nfs_alloc_seqid(&state
->owner
->so_seqid
, gfp_mask
);
2651 if (calldata
->arg
.seqid
== NULL
)
2652 goto out_free_calldata
;
2653 calldata
->arg
.fmode
= 0;
2654 calldata
->arg
.bitmask
= server
->cache_consistency_bitmask
;
2655 calldata
->res
.fattr
= &calldata
->fattr
;
2656 calldata
->res
.seqid
= calldata
->arg
.seqid
;
2657 calldata
->res
.server
= server
;
2658 calldata
->roc
= pnfs_roc(state
->inode
);
2659 nfs_sb_active(calldata
->inode
->i_sb
);
2661 msg
.rpc_argp
= &calldata
->arg
;
2662 msg
.rpc_resp
= &calldata
->res
;
2663 task_setup_data
.callback_data
= calldata
;
2664 task
= rpc_run_task(&task_setup_data
);
2666 return PTR_ERR(task
);
2669 status
= rpc_wait_for_completion_task(task
);
2675 nfs4_put_open_state(state
);
2676 nfs4_put_state_owner(sp
);
2680 static struct inode
*
2681 nfs4_atomic_open(struct inode
*dir
, struct nfs_open_context
*ctx
,
2682 int open_flags
, struct iattr
*attr
, int *opened
)
2684 struct nfs4_state
*state
;
2685 struct nfs4_label l
= {0, 0, 0, NULL
}, *label
= NULL
;
2687 label
= nfs4_label_init_security(dir
, ctx
->dentry
, attr
, &l
);
2689 /* Protect against concurrent sillydeletes */
2690 state
= nfs4_do_open(dir
, ctx
, open_flags
, attr
, label
, opened
);
2692 nfs4_label_release_security(label
);
2695 return ERR_CAST(state
);
2696 return state
->inode
;
2699 static void nfs4_close_context(struct nfs_open_context
*ctx
, int is_sync
)
2701 if (ctx
->state
== NULL
)
2704 nfs4_close_sync(ctx
->state
, ctx
->mode
);
2706 nfs4_close_state(ctx
->state
, ctx
->mode
);
2709 #define FATTR4_WORD1_NFS40_MASK (2*FATTR4_WORD1_MOUNTED_ON_FILEID - 1UL)
2710 #define FATTR4_WORD2_NFS41_MASK (2*FATTR4_WORD2_SUPPATTR_EXCLCREAT - 1UL)
2711 #define FATTR4_WORD2_NFS42_MASK (2*FATTR4_WORD2_CHANGE_SECURITY_LABEL - 1UL)
2713 static int _nfs4_server_capabilities(struct nfs_server
*server
, struct nfs_fh
*fhandle
)
2715 struct nfs4_server_caps_arg args
= {
2718 struct nfs4_server_caps_res res
= {};
2719 struct rpc_message msg
= {
2720 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SERVER_CAPS
],
2726 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2728 /* Sanity check the server answers */
2729 switch (server
->nfs_client
->cl_minorversion
) {
2731 res
.attr_bitmask
[1] &= FATTR4_WORD1_NFS40_MASK
;
2732 res
.attr_bitmask
[2] = 0;
2735 res
.attr_bitmask
[2] &= FATTR4_WORD2_NFS41_MASK
;
2738 res
.attr_bitmask
[2] &= FATTR4_WORD2_NFS42_MASK
;
2740 memcpy(server
->attr_bitmask
, res
.attr_bitmask
, sizeof(server
->attr_bitmask
));
2741 server
->caps
&= ~(NFS_CAP_ACLS
|NFS_CAP_HARDLINKS
|
2742 NFS_CAP_SYMLINKS
|NFS_CAP_FILEID
|
2743 NFS_CAP_MODE
|NFS_CAP_NLINK
|NFS_CAP_OWNER
|
2744 NFS_CAP_OWNER_GROUP
|NFS_CAP_ATIME
|
2745 NFS_CAP_CTIME
|NFS_CAP_MTIME
|
2746 NFS_CAP_SECURITY_LABEL
);
2747 if (res
.attr_bitmask
[0] & FATTR4_WORD0_ACL
)
2748 server
->caps
|= NFS_CAP_ACLS
;
2749 if (res
.has_links
!= 0)
2750 server
->caps
|= NFS_CAP_HARDLINKS
;
2751 if (res
.has_symlinks
!= 0)
2752 server
->caps
|= NFS_CAP_SYMLINKS
;
2753 if (res
.attr_bitmask
[0] & FATTR4_WORD0_FILEID
)
2754 server
->caps
|= NFS_CAP_FILEID
;
2755 if (res
.attr_bitmask
[1] & FATTR4_WORD1_MODE
)
2756 server
->caps
|= NFS_CAP_MODE
;
2757 if (res
.attr_bitmask
[1] & FATTR4_WORD1_NUMLINKS
)
2758 server
->caps
|= NFS_CAP_NLINK
;
2759 if (res
.attr_bitmask
[1] & FATTR4_WORD1_OWNER
)
2760 server
->caps
|= NFS_CAP_OWNER
;
2761 if (res
.attr_bitmask
[1] & FATTR4_WORD1_OWNER_GROUP
)
2762 server
->caps
|= NFS_CAP_OWNER_GROUP
;
2763 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_ACCESS
)
2764 server
->caps
|= NFS_CAP_ATIME
;
2765 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_METADATA
)
2766 server
->caps
|= NFS_CAP_CTIME
;
2767 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_MODIFY
)
2768 server
->caps
|= NFS_CAP_MTIME
;
2769 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
2770 if (res
.attr_bitmask
[2] & FATTR4_WORD2_SECURITY_LABEL
)
2771 server
->caps
|= NFS_CAP_SECURITY_LABEL
;
2773 memcpy(server
->attr_bitmask_nl
, res
.attr_bitmask
,
2774 sizeof(server
->attr_bitmask
));
2775 server
->attr_bitmask_nl
[2] &= ~FATTR4_WORD2_SECURITY_LABEL
;
2777 memcpy(server
->cache_consistency_bitmask
, res
.attr_bitmask
, sizeof(server
->cache_consistency_bitmask
));
2778 server
->cache_consistency_bitmask
[0] &= FATTR4_WORD0_CHANGE
|FATTR4_WORD0_SIZE
;
2779 server
->cache_consistency_bitmask
[1] &= FATTR4_WORD1_TIME_METADATA
|FATTR4_WORD1_TIME_MODIFY
;
2780 server
->cache_consistency_bitmask
[2] = 0;
2781 server
->acl_bitmask
= res
.acl_bitmask
;
2782 server
->fh_expire_type
= res
.fh_expire_type
;
2788 int nfs4_server_capabilities(struct nfs_server
*server
, struct nfs_fh
*fhandle
)
2790 struct nfs4_exception exception
= { };
2793 err
= nfs4_handle_exception(server
,
2794 _nfs4_server_capabilities(server
, fhandle
),
2796 } while (exception
.retry
);
2800 static int _nfs4_lookup_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2801 struct nfs_fsinfo
*info
)
2804 struct nfs4_lookup_root_arg args
= {
2807 struct nfs4_lookup_res res
= {
2809 .fattr
= info
->fattr
,
2812 struct rpc_message msg
= {
2813 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOOKUP_ROOT
],
2818 bitmask
[0] = nfs4_fattr_bitmap
[0];
2819 bitmask
[1] = nfs4_fattr_bitmap
[1];
2821 * Process the label in the upcoming getfattr
2823 bitmask
[2] = nfs4_fattr_bitmap
[2] & ~FATTR4_WORD2_SECURITY_LABEL
;
2825 nfs_fattr_init(info
->fattr
);
2826 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2829 static int nfs4_lookup_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2830 struct nfs_fsinfo
*info
)
2832 struct nfs4_exception exception
= { };
2835 err
= _nfs4_lookup_root(server
, fhandle
, info
);
2836 trace_nfs4_lookup_root(server
, fhandle
, info
->fattr
, err
);
2839 case -NFS4ERR_WRONGSEC
:
2842 err
= nfs4_handle_exception(server
, err
, &exception
);
2844 } while (exception
.retry
);
2849 static int nfs4_lookup_root_sec(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2850 struct nfs_fsinfo
*info
, rpc_authflavor_t flavor
)
2852 struct rpc_auth_create_args auth_args
= {
2853 .pseudoflavor
= flavor
,
2855 struct rpc_auth
*auth
;
2858 auth
= rpcauth_create(&auth_args
, server
->client
);
2863 ret
= nfs4_lookup_root(server
, fhandle
, info
);
2869 * Retry pseudoroot lookup with various security flavors. We do this when:
2871 * NFSv4.0: the PUTROOTFH operation returns NFS4ERR_WRONGSEC
2872 * NFSv4.1: the server does not support the SECINFO_NO_NAME operation
2874 * Returns zero on success, or a negative NFS4ERR value, or a
2875 * negative errno value.
2877 static int nfs4_find_root_sec(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2878 struct nfs_fsinfo
*info
)
2880 /* Per 3530bis 15.33.5 */
2881 static const rpc_authflavor_t flav_array
[] = {
2885 RPC_AUTH_UNIX
, /* courtesy */
2888 int status
= -EPERM
;
2891 if (server
->auth_info
.flavor_len
> 0) {
2892 /* try each flavor specified by user */
2893 for (i
= 0; i
< server
->auth_info
.flavor_len
; i
++) {
2894 status
= nfs4_lookup_root_sec(server
, fhandle
, info
,
2895 server
->auth_info
.flavors
[i
]);
2896 if (status
== -NFS4ERR_WRONGSEC
|| status
== -EACCES
)
2901 /* no flavors specified by user, try default list */
2902 for (i
= 0; i
< ARRAY_SIZE(flav_array
); i
++) {
2903 status
= nfs4_lookup_root_sec(server
, fhandle
, info
,
2905 if (status
== -NFS4ERR_WRONGSEC
|| status
== -EACCES
)
2912 * -EACCESS could mean that the user doesn't have correct permissions
2913 * to access the mount. It could also mean that we tried to mount
2914 * with a gss auth flavor, but rpc.gssd isn't running. Either way,
2915 * existing mount programs don't handle -EACCES very well so it should
2916 * be mapped to -EPERM instead.
2918 if (status
== -EACCES
)
2923 static int nfs4_do_find_root_sec(struct nfs_server
*server
,
2924 struct nfs_fh
*fhandle
, struct nfs_fsinfo
*info
)
2926 int mv
= server
->nfs_client
->cl_minorversion
;
2927 return nfs_v4_minor_ops
[mv
]->find_root_sec(server
, fhandle
, info
);
2931 * nfs4_proc_get_rootfh - get file handle for server's pseudoroot
2932 * @server: initialized nfs_server handle
2933 * @fhandle: we fill in the pseudo-fs root file handle
2934 * @info: we fill in an FSINFO struct
2935 * @auth_probe: probe the auth flavours
2937 * Returns zero on success, or a negative errno.
2939 int nfs4_proc_get_rootfh(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2940 struct nfs_fsinfo
*info
,
2945 switch (auth_probe
) {
2947 status
= nfs4_lookup_root(server
, fhandle
, info
);
2948 if (status
!= -NFS4ERR_WRONGSEC
)
2951 status
= nfs4_do_find_root_sec(server
, fhandle
, info
);
2955 status
= nfs4_server_capabilities(server
, fhandle
);
2957 status
= nfs4_do_fsinfo(server
, fhandle
, info
);
2959 return nfs4_map_errors(status
);
2962 static int nfs4_proc_get_root(struct nfs_server
*server
, struct nfs_fh
*mntfh
,
2963 struct nfs_fsinfo
*info
)
2966 struct nfs_fattr
*fattr
= info
->fattr
;
2967 struct nfs4_label
*label
= NULL
;
2969 error
= nfs4_server_capabilities(server
, mntfh
);
2971 dprintk("nfs4_get_root: getcaps error = %d\n", -error
);
2975 label
= nfs4_label_alloc(server
, GFP_KERNEL
);
2977 return PTR_ERR(label
);
2979 error
= nfs4_proc_getattr(server
, mntfh
, fattr
, label
);
2981 dprintk("nfs4_get_root: getattr error = %d\n", -error
);
2982 goto err_free_label
;
2985 if (fattr
->valid
& NFS_ATTR_FATTR_FSID
&&
2986 !nfs_fsid_equal(&server
->fsid
, &fattr
->fsid
))
2987 memcpy(&server
->fsid
, &fattr
->fsid
, sizeof(server
->fsid
));
2990 nfs4_label_free(label
);
2996 * Get locations and (maybe) other attributes of a referral.
2997 * Note that we'll actually follow the referral later when
2998 * we detect fsid mismatch in inode revalidation
3000 static int nfs4_get_referral(struct rpc_clnt
*client
, struct inode
*dir
,
3001 const struct qstr
*name
, struct nfs_fattr
*fattr
,
3002 struct nfs_fh
*fhandle
)
3004 int status
= -ENOMEM
;
3005 struct page
*page
= NULL
;
3006 struct nfs4_fs_locations
*locations
= NULL
;
3008 page
= alloc_page(GFP_KERNEL
);
3011 locations
= kmalloc(sizeof(struct nfs4_fs_locations
), GFP_KERNEL
);
3012 if (locations
== NULL
)
3015 status
= nfs4_proc_fs_locations(client
, dir
, name
, locations
, page
);
3020 * If the fsid didn't change, this is a migration event, not a
3021 * referral. Cause us to drop into the exception handler, which
3022 * will kick off migration recovery.
3024 if (nfs_fsid_equal(&NFS_SERVER(dir
)->fsid
, &locations
->fattr
.fsid
)) {
3025 dprintk("%s: server did not return a different fsid for"
3026 " a referral at %s\n", __func__
, name
->name
);
3027 status
= -NFS4ERR_MOVED
;
3030 /* Fixup attributes for the nfs_lookup() call to nfs_fhget() */
3031 nfs_fixup_referral_attributes(&locations
->fattr
);
3033 /* replace the lookup nfs_fattr with the locations nfs_fattr */
3034 memcpy(fattr
, &locations
->fattr
, sizeof(struct nfs_fattr
));
3035 memset(fhandle
, 0, sizeof(struct nfs_fh
));
3043 static int _nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3044 struct nfs_fattr
*fattr
, struct nfs4_label
*label
)
3046 struct nfs4_getattr_arg args
= {
3048 .bitmask
= server
->attr_bitmask
,
3050 struct nfs4_getattr_res res
= {
3055 struct rpc_message msg
= {
3056 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETATTR
],
3061 args
.bitmask
= nfs4_bitmask(server
, label
);
3063 nfs_fattr_init(fattr
);
3064 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3067 static int nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3068 struct nfs_fattr
*fattr
, struct nfs4_label
*label
)
3070 struct nfs4_exception exception
= { };
3073 err
= _nfs4_proc_getattr(server
, fhandle
, fattr
, label
);
3074 trace_nfs4_getattr(server
, fhandle
, fattr
, err
);
3075 err
= nfs4_handle_exception(server
, err
,
3077 } while (exception
.retry
);
3082 * The file is not closed if it is opened due to the a request to change
3083 * the size of the file. The open call will not be needed once the
3084 * VFS layer lookup-intents are implemented.
3086 * Close is called when the inode is destroyed.
3087 * If we haven't opened the file for O_WRONLY, we
3088 * need to in the size_change case to obtain a stateid.
3091 * Because OPEN is always done by name in nfsv4, it is
3092 * possible that we opened a different file by the same
3093 * name. We can recognize this race condition, but we
3094 * can't do anything about it besides returning an error.
3096 * This will be fixed with VFS changes (lookup-intent).
3099 nfs4_proc_setattr(struct dentry
*dentry
, struct nfs_fattr
*fattr
,
3100 struct iattr
*sattr
)
3102 struct inode
*inode
= dentry
->d_inode
;
3103 struct rpc_cred
*cred
= NULL
;
3104 struct nfs4_state
*state
= NULL
;
3105 struct nfs4_label
*label
= NULL
;
3108 if (pnfs_ld_layoutret_on_setattr(inode
))
3109 pnfs_commit_and_return_layout(inode
);
3111 nfs_fattr_init(fattr
);
3113 /* Deal with open(O_TRUNC) */
3114 if (sattr
->ia_valid
& ATTR_OPEN
)
3115 sattr
->ia_valid
&= ~(ATTR_MTIME
|ATTR_CTIME
);
3117 /* Optimization: if the end result is no change, don't RPC */
3118 if ((sattr
->ia_valid
& ~(ATTR_FILE
|ATTR_OPEN
)) == 0)
3121 /* Search for an existing open(O_WRITE) file */
3122 if (sattr
->ia_valid
& ATTR_FILE
) {
3123 struct nfs_open_context
*ctx
;
3125 ctx
= nfs_file_open_context(sattr
->ia_file
);
3132 label
= nfs4_label_alloc(NFS_SERVER(inode
), GFP_KERNEL
);
3134 return PTR_ERR(label
);
3136 status
= nfs4_do_setattr(inode
, cred
, fattr
, sattr
, state
, NULL
, label
);
3138 nfs_setattr_update_inode(inode
, sattr
);
3139 nfs_setsecurity(inode
, fattr
, label
);
3141 nfs4_label_free(label
);
3145 static int _nfs4_proc_lookup(struct rpc_clnt
*clnt
, struct inode
*dir
,
3146 const struct qstr
*name
, struct nfs_fh
*fhandle
,
3147 struct nfs_fattr
*fattr
, struct nfs4_label
*label
)
3149 struct nfs_server
*server
= NFS_SERVER(dir
);
3151 struct nfs4_lookup_arg args
= {
3152 .bitmask
= server
->attr_bitmask
,
3153 .dir_fh
= NFS_FH(dir
),
3156 struct nfs4_lookup_res res
= {
3162 struct rpc_message msg
= {
3163 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOOKUP
],
3168 args
.bitmask
= nfs4_bitmask(server
, label
);
3170 nfs_fattr_init(fattr
);
3172 dprintk("NFS call lookup %s\n", name
->name
);
3173 status
= nfs4_call_sync(clnt
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3174 dprintk("NFS reply lookup: %d\n", status
);
3178 static void nfs_fixup_secinfo_attributes(struct nfs_fattr
*fattr
)
3180 fattr
->valid
|= NFS_ATTR_FATTR_TYPE
| NFS_ATTR_FATTR_MODE
|
3181 NFS_ATTR_FATTR_NLINK
| NFS_ATTR_FATTR_MOUNTPOINT
;
3182 fattr
->mode
= S_IFDIR
| S_IRUGO
| S_IXUGO
;
3186 static int nfs4_proc_lookup_common(struct rpc_clnt
**clnt
, struct inode
*dir
,
3187 struct qstr
*name
, struct nfs_fh
*fhandle
,
3188 struct nfs_fattr
*fattr
, struct nfs4_label
*label
)
3190 struct nfs4_exception exception
= { };
3191 struct rpc_clnt
*client
= *clnt
;
3194 err
= _nfs4_proc_lookup(client
, dir
, name
, fhandle
, fattr
, label
);
3195 trace_nfs4_lookup(dir
, name
, err
);
3197 case -NFS4ERR_BADNAME
:
3200 case -NFS4ERR_MOVED
:
3201 err
= nfs4_get_referral(client
, dir
, name
, fattr
, fhandle
);
3203 case -NFS4ERR_WRONGSEC
:
3205 if (client
!= *clnt
)
3207 client
= nfs4_create_sec_client(client
, dir
, name
);
3209 return PTR_ERR(client
);
3211 exception
.retry
= 1;
3214 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
, &exception
);
3216 } while (exception
.retry
);
3221 else if (client
!= *clnt
)
3222 rpc_shutdown_client(client
);
3227 static int nfs4_proc_lookup(struct inode
*dir
, struct qstr
*name
,
3228 struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
,
3229 struct nfs4_label
*label
)
3232 struct rpc_clnt
*client
= NFS_CLIENT(dir
);
3234 status
= nfs4_proc_lookup_common(&client
, dir
, name
, fhandle
, fattr
, label
);
3235 if (client
!= NFS_CLIENT(dir
)) {
3236 rpc_shutdown_client(client
);
3237 nfs_fixup_secinfo_attributes(fattr
);
3243 nfs4_proc_lookup_mountpoint(struct inode
*dir
, struct qstr
*name
,
3244 struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
3246 struct rpc_clnt
*client
= NFS_CLIENT(dir
);
3249 status
= nfs4_proc_lookup_common(&client
, dir
, name
, fhandle
, fattr
, NULL
);
3251 return ERR_PTR(status
);
3252 return (client
== NFS_CLIENT(dir
)) ? rpc_clone_client(client
) : client
;
3255 static int _nfs4_proc_access(struct inode
*inode
, struct nfs_access_entry
*entry
)
3257 struct nfs_server
*server
= NFS_SERVER(inode
);
3258 struct nfs4_accessargs args
= {
3259 .fh
= NFS_FH(inode
),
3260 .bitmask
= server
->cache_consistency_bitmask
,
3262 struct nfs4_accessres res
= {
3265 struct rpc_message msg
= {
3266 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_ACCESS
],
3269 .rpc_cred
= entry
->cred
,
3271 int mode
= entry
->mask
;
3275 * Determine which access bits we want to ask for...
3277 if (mode
& MAY_READ
)
3278 args
.access
|= NFS4_ACCESS_READ
;
3279 if (S_ISDIR(inode
->i_mode
)) {
3280 if (mode
& MAY_WRITE
)
3281 args
.access
|= NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
| NFS4_ACCESS_DELETE
;
3282 if (mode
& MAY_EXEC
)
3283 args
.access
|= NFS4_ACCESS_LOOKUP
;
3285 if (mode
& MAY_WRITE
)
3286 args
.access
|= NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
;
3287 if (mode
& MAY_EXEC
)
3288 args
.access
|= NFS4_ACCESS_EXECUTE
;
3291 res
.fattr
= nfs_alloc_fattr();
3292 if (res
.fattr
== NULL
)
3295 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3297 nfs_access_set_mask(entry
, res
.access
);
3298 nfs_refresh_inode(inode
, res
.fattr
);
3300 nfs_free_fattr(res
.fattr
);
3304 static int nfs4_proc_access(struct inode
*inode
, struct nfs_access_entry
*entry
)
3306 struct nfs4_exception exception
= { };
3309 err
= _nfs4_proc_access(inode
, entry
);
3310 trace_nfs4_access(inode
, err
);
3311 err
= nfs4_handle_exception(NFS_SERVER(inode
), err
,
3313 } while (exception
.retry
);
3318 * TODO: For the time being, we don't try to get any attributes
3319 * along with any of the zero-copy operations READ, READDIR,
3322 * In the case of the first three, we want to put the GETATTR
3323 * after the read-type operation -- this is because it is hard
3324 * to predict the length of a GETATTR response in v4, and thus
3325 * align the READ data correctly. This means that the GETATTR
3326 * may end up partially falling into the page cache, and we should
3327 * shift it into the 'tail' of the xdr_buf before processing.
3328 * To do this efficiently, we need to know the total length
3329 * of data received, which doesn't seem to be available outside
3332 * In the case of WRITE, we also want to put the GETATTR after
3333 * the operation -- in this case because we want to make sure
3334 * we get the post-operation mtime and size.
3336 * Both of these changes to the XDR layer would in fact be quite
3337 * minor, but I decided to leave them for a subsequent patch.
3339 static int _nfs4_proc_readlink(struct inode
*inode
, struct page
*page
,
3340 unsigned int pgbase
, unsigned int pglen
)
3342 struct nfs4_readlink args
= {
3343 .fh
= NFS_FH(inode
),
3348 struct nfs4_readlink_res res
;
3349 struct rpc_message msg
= {
3350 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READLINK
],
3355 return nfs4_call_sync(NFS_SERVER(inode
)->client
, NFS_SERVER(inode
), &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3358 static int nfs4_proc_readlink(struct inode
*inode
, struct page
*page
,
3359 unsigned int pgbase
, unsigned int pglen
)
3361 struct nfs4_exception exception
= { };
3364 err
= _nfs4_proc_readlink(inode
, page
, pgbase
, pglen
);
3365 trace_nfs4_readlink(inode
, err
);
3366 err
= nfs4_handle_exception(NFS_SERVER(inode
), err
,
3368 } while (exception
.retry
);
3373 * This is just for mknod. open(O_CREAT) will always do ->open_context().
3376 nfs4_proc_create(struct inode
*dir
, struct dentry
*dentry
, struct iattr
*sattr
,
3379 struct nfs4_label l
, *ilabel
= NULL
;
3380 struct nfs_open_context
*ctx
;
3381 struct nfs4_state
*state
;
3385 ctx
= alloc_nfs_open_context(dentry
, FMODE_READ
);
3387 return PTR_ERR(ctx
);
3389 ilabel
= nfs4_label_init_security(dir
, dentry
, sattr
, &l
);
3391 sattr
->ia_mode
&= ~current_umask();
3392 state
= nfs4_do_open(dir
, ctx
, flags
, sattr
, ilabel
, &opened
);
3393 if (IS_ERR(state
)) {
3394 status
= PTR_ERR(state
);
3398 nfs4_label_release_security(ilabel
);
3399 put_nfs_open_context(ctx
);
3403 static int _nfs4_proc_remove(struct inode
*dir
, struct qstr
*name
)
3405 struct nfs_server
*server
= NFS_SERVER(dir
);
3406 struct nfs_removeargs args
= {
3410 struct nfs_removeres res
= {
3413 struct rpc_message msg
= {
3414 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_REMOVE
],
3420 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 1);
3422 update_changeattr(dir
, &res
.cinfo
);
3426 static int nfs4_proc_remove(struct inode
*dir
, struct qstr
*name
)
3428 struct nfs4_exception exception
= { };
3431 err
= _nfs4_proc_remove(dir
, name
);
3432 trace_nfs4_remove(dir
, name
, err
);
3433 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
3435 } while (exception
.retry
);
3439 static void nfs4_proc_unlink_setup(struct rpc_message
*msg
, struct inode
*dir
)
3441 struct nfs_server
*server
= NFS_SERVER(dir
);
3442 struct nfs_removeargs
*args
= msg
->rpc_argp
;
3443 struct nfs_removeres
*res
= msg
->rpc_resp
;
3445 res
->server
= server
;
3446 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_REMOVE
];
3447 nfs4_init_sequence(&args
->seq_args
, &res
->seq_res
, 1);
3449 nfs_fattr_init(res
->dir_attr
);
3452 static void nfs4_proc_unlink_rpc_prepare(struct rpc_task
*task
, struct nfs_unlinkdata
*data
)
3454 nfs4_setup_sequence(NFS_SERVER(data
->dir
),
3455 &data
->args
.seq_args
,
3460 static int nfs4_proc_unlink_done(struct rpc_task
*task
, struct inode
*dir
)
3462 struct nfs_unlinkdata
*data
= task
->tk_calldata
;
3463 struct nfs_removeres
*res
= &data
->res
;
3465 if (!nfs4_sequence_done(task
, &res
->seq_res
))
3467 if (nfs4_async_handle_error(task
, res
->server
, NULL
) == -EAGAIN
)
3469 update_changeattr(dir
, &res
->cinfo
);
3473 static void nfs4_proc_rename_setup(struct rpc_message
*msg
, struct inode
*dir
)
3475 struct nfs_server
*server
= NFS_SERVER(dir
);
3476 struct nfs_renameargs
*arg
= msg
->rpc_argp
;
3477 struct nfs_renameres
*res
= msg
->rpc_resp
;
3479 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENAME
];
3480 res
->server
= server
;
3481 nfs4_init_sequence(&arg
->seq_args
, &res
->seq_res
, 1);
3484 static void nfs4_proc_rename_rpc_prepare(struct rpc_task
*task
, struct nfs_renamedata
*data
)
3486 nfs4_setup_sequence(NFS_SERVER(data
->old_dir
),
3487 &data
->args
.seq_args
,
3492 static int nfs4_proc_rename_done(struct rpc_task
*task
, struct inode
*old_dir
,
3493 struct inode
*new_dir
)
3495 struct nfs_renamedata
*data
= task
->tk_calldata
;
3496 struct nfs_renameres
*res
= &data
->res
;
3498 if (!nfs4_sequence_done(task
, &res
->seq_res
))
3500 if (nfs4_async_handle_error(task
, res
->server
, NULL
) == -EAGAIN
)
3503 update_changeattr(old_dir
, &res
->old_cinfo
);
3504 update_changeattr(new_dir
, &res
->new_cinfo
);
3508 static int _nfs4_proc_rename(struct inode
*old_dir
, struct qstr
*old_name
,
3509 struct inode
*new_dir
, struct qstr
*new_name
)
3511 struct nfs_server
*server
= NFS_SERVER(old_dir
);
3512 struct nfs_renameargs arg
= {
3513 .old_dir
= NFS_FH(old_dir
),
3514 .new_dir
= NFS_FH(new_dir
),
3515 .old_name
= old_name
,
3516 .new_name
= new_name
,
3518 struct nfs_renameres res
= {
3521 struct rpc_message msg
= {
3522 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENAME
],
3526 int status
= -ENOMEM
;
3528 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
3530 update_changeattr(old_dir
, &res
.old_cinfo
);
3531 update_changeattr(new_dir
, &res
.new_cinfo
);
3536 static int nfs4_proc_rename(struct inode
*old_dir
, struct qstr
*old_name
,
3537 struct inode
*new_dir
, struct qstr
*new_name
)
3539 struct nfs4_exception exception
= { };
3542 err
= _nfs4_proc_rename(old_dir
, old_name
,
3544 trace_nfs4_rename(old_dir
, old_name
, new_dir
, new_name
, err
);
3545 err
= nfs4_handle_exception(NFS_SERVER(old_dir
), err
,
3547 } while (exception
.retry
);
3551 static int _nfs4_proc_link(struct inode
*inode
, struct inode
*dir
, struct qstr
*name
)
3553 struct nfs_server
*server
= NFS_SERVER(inode
);
3554 struct nfs4_link_arg arg
= {
3555 .fh
= NFS_FH(inode
),
3556 .dir_fh
= NFS_FH(dir
),
3558 .bitmask
= server
->attr_bitmask
,
3560 struct nfs4_link_res res
= {
3564 struct rpc_message msg
= {
3565 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LINK
],
3569 int status
= -ENOMEM
;
3571 res
.fattr
= nfs_alloc_fattr();
3572 if (res
.fattr
== NULL
)
3575 res
.label
= nfs4_label_alloc(server
, GFP_KERNEL
);
3576 if (IS_ERR(res
.label
)) {
3577 status
= PTR_ERR(res
.label
);
3580 arg
.bitmask
= nfs4_bitmask(server
, res
.label
);
3582 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
3584 update_changeattr(dir
, &res
.cinfo
);
3585 status
= nfs_post_op_update_inode(inode
, res
.fattr
);
3587 nfs_setsecurity(inode
, res
.fattr
, res
.label
);
3591 nfs4_label_free(res
.label
);
3594 nfs_free_fattr(res
.fattr
);
3598 static int nfs4_proc_link(struct inode
*inode
, struct inode
*dir
, struct qstr
*name
)
3600 struct nfs4_exception exception
= { };
3603 err
= nfs4_handle_exception(NFS_SERVER(inode
),
3604 _nfs4_proc_link(inode
, dir
, name
),
3606 } while (exception
.retry
);
3610 struct nfs4_createdata
{
3611 struct rpc_message msg
;
3612 struct nfs4_create_arg arg
;
3613 struct nfs4_create_res res
;
3615 struct nfs_fattr fattr
;
3616 struct nfs4_label
*label
;
3619 static struct nfs4_createdata
*nfs4_alloc_createdata(struct inode
*dir
,
3620 struct qstr
*name
, struct iattr
*sattr
, u32 ftype
)
3622 struct nfs4_createdata
*data
;
3624 data
= kzalloc(sizeof(*data
), GFP_KERNEL
);
3626 struct nfs_server
*server
= NFS_SERVER(dir
);
3628 data
->label
= nfs4_label_alloc(server
, GFP_KERNEL
);
3629 if (IS_ERR(data
->label
))
3632 data
->msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CREATE
];
3633 data
->msg
.rpc_argp
= &data
->arg
;
3634 data
->msg
.rpc_resp
= &data
->res
;
3635 data
->arg
.dir_fh
= NFS_FH(dir
);
3636 data
->arg
.server
= server
;
3637 data
->arg
.name
= name
;
3638 data
->arg
.attrs
= sattr
;
3639 data
->arg
.ftype
= ftype
;
3640 data
->arg
.bitmask
= nfs4_bitmask(server
, data
->label
);
3641 data
->res
.server
= server
;
3642 data
->res
.fh
= &data
->fh
;
3643 data
->res
.fattr
= &data
->fattr
;
3644 data
->res
.label
= data
->label
;
3645 nfs_fattr_init(data
->res
.fattr
);
3653 static int nfs4_do_create(struct inode
*dir
, struct dentry
*dentry
, struct nfs4_createdata
*data
)
3655 int status
= nfs4_call_sync(NFS_SERVER(dir
)->client
, NFS_SERVER(dir
), &data
->msg
,
3656 &data
->arg
.seq_args
, &data
->res
.seq_res
, 1);
3658 update_changeattr(dir
, &data
->res
.dir_cinfo
);
3659 status
= nfs_instantiate(dentry
, data
->res
.fh
, data
->res
.fattr
, data
->res
.label
);
3664 static void nfs4_free_createdata(struct nfs4_createdata
*data
)
3666 nfs4_label_free(data
->label
);
3670 static int _nfs4_proc_symlink(struct inode
*dir
, struct dentry
*dentry
,
3671 struct page
*page
, unsigned int len
, struct iattr
*sattr
,
3672 struct nfs4_label
*label
)
3674 struct nfs4_createdata
*data
;
3675 int status
= -ENAMETOOLONG
;
3677 if (len
> NFS4_MAXPATHLEN
)
3681 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4LNK
);
3685 data
->msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SYMLINK
];
3686 data
->arg
.u
.symlink
.pages
= &page
;
3687 data
->arg
.u
.symlink
.len
= len
;
3688 data
->arg
.label
= label
;
3690 status
= nfs4_do_create(dir
, dentry
, data
);
3692 nfs4_free_createdata(data
);
3697 static int nfs4_proc_symlink(struct inode
*dir
, struct dentry
*dentry
,
3698 struct page
*page
, unsigned int len
, struct iattr
*sattr
)
3700 struct nfs4_exception exception
= { };
3701 struct nfs4_label l
, *label
= NULL
;
3704 label
= nfs4_label_init_security(dir
, dentry
, sattr
, &l
);
3707 err
= _nfs4_proc_symlink(dir
, dentry
, page
, len
, sattr
, label
);
3708 trace_nfs4_symlink(dir
, &dentry
->d_name
, err
);
3709 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
3711 } while (exception
.retry
);
3713 nfs4_label_release_security(label
);
3717 static int _nfs4_proc_mkdir(struct inode
*dir
, struct dentry
*dentry
,
3718 struct iattr
*sattr
, struct nfs4_label
*label
)
3720 struct nfs4_createdata
*data
;
3721 int status
= -ENOMEM
;
3723 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4DIR
);
3727 data
->arg
.label
= label
;
3728 status
= nfs4_do_create(dir
, dentry
, data
);
3730 nfs4_free_createdata(data
);
3735 static int nfs4_proc_mkdir(struct inode
*dir
, struct dentry
*dentry
,
3736 struct iattr
*sattr
)
3738 struct nfs4_exception exception
= { };
3739 struct nfs4_label l
, *label
= NULL
;
3742 label
= nfs4_label_init_security(dir
, dentry
, sattr
, &l
);
3744 sattr
->ia_mode
&= ~current_umask();
3746 err
= _nfs4_proc_mkdir(dir
, dentry
, sattr
, label
);
3747 trace_nfs4_mkdir(dir
, &dentry
->d_name
, err
);
3748 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
3750 } while (exception
.retry
);
3751 nfs4_label_release_security(label
);
3756 static int _nfs4_proc_readdir(struct dentry
*dentry
, struct rpc_cred
*cred
,
3757 u64 cookie
, struct page
**pages
, unsigned int count
, int plus
)
3759 struct inode
*dir
= dentry
->d_inode
;
3760 struct nfs4_readdir_arg args
= {
3765 .bitmask
= NFS_SERVER(dentry
->d_inode
)->attr_bitmask
,
3768 struct nfs4_readdir_res res
;
3769 struct rpc_message msg
= {
3770 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READDIR
],
3777 dprintk("%s: dentry = %pd2, cookie = %Lu\n", __func__
,
3779 (unsigned long long)cookie
);
3780 nfs4_setup_readdir(cookie
, NFS_I(dir
)->cookieverf
, dentry
, &args
);
3781 res
.pgbase
= args
.pgbase
;
3782 status
= nfs4_call_sync(NFS_SERVER(dir
)->client
, NFS_SERVER(dir
), &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3784 memcpy(NFS_I(dir
)->cookieverf
, res
.verifier
.data
, NFS4_VERIFIER_SIZE
);
3785 status
+= args
.pgbase
;
3788 nfs_invalidate_atime(dir
);
3790 dprintk("%s: returns %d\n", __func__
, status
);
3794 static int nfs4_proc_readdir(struct dentry
*dentry
, struct rpc_cred
*cred
,
3795 u64 cookie
, struct page
**pages
, unsigned int count
, int plus
)
3797 struct nfs4_exception exception
= { };
3800 err
= _nfs4_proc_readdir(dentry
, cred
, cookie
,
3801 pages
, count
, plus
);
3802 trace_nfs4_readdir(dentry
->d_inode
, err
);
3803 err
= nfs4_handle_exception(NFS_SERVER(dentry
->d_inode
), err
,
3805 } while (exception
.retry
);
3809 static int _nfs4_proc_mknod(struct inode
*dir
, struct dentry
*dentry
,
3810 struct iattr
*sattr
, struct nfs4_label
*label
, dev_t rdev
)
3812 struct nfs4_createdata
*data
;
3813 int mode
= sattr
->ia_mode
;
3814 int status
= -ENOMEM
;
3816 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4SOCK
);
3821 data
->arg
.ftype
= NF4FIFO
;
3822 else if (S_ISBLK(mode
)) {
3823 data
->arg
.ftype
= NF4BLK
;
3824 data
->arg
.u
.device
.specdata1
= MAJOR(rdev
);
3825 data
->arg
.u
.device
.specdata2
= MINOR(rdev
);
3827 else if (S_ISCHR(mode
)) {
3828 data
->arg
.ftype
= NF4CHR
;
3829 data
->arg
.u
.device
.specdata1
= MAJOR(rdev
);
3830 data
->arg
.u
.device
.specdata2
= MINOR(rdev
);
3831 } else if (!S_ISSOCK(mode
)) {
3836 data
->arg
.label
= label
;
3837 status
= nfs4_do_create(dir
, dentry
, data
);
3839 nfs4_free_createdata(data
);
3844 static int nfs4_proc_mknod(struct inode
*dir
, struct dentry
*dentry
,
3845 struct iattr
*sattr
, dev_t rdev
)
3847 struct nfs4_exception exception
= { };
3848 struct nfs4_label l
, *label
= NULL
;
3851 label
= nfs4_label_init_security(dir
, dentry
, sattr
, &l
);
3853 sattr
->ia_mode
&= ~current_umask();
3855 err
= _nfs4_proc_mknod(dir
, dentry
, sattr
, label
, rdev
);
3856 trace_nfs4_mknod(dir
, &dentry
->d_name
, err
);
3857 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
3859 } while (exception
.retry
);
3861 nfs4_label_release_security(label
);
3866 static int _nfs4_proc_statfs(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3867 struct nfs_fsstat
*fsstat
)
3869 struct nfs4_statfs_arg args
= {
3871 .bitmask
= server
->attr_bitmask
,
3873 struct nfs4_statfs_res res
= {
3876 struct rpc_message msg
= {
3877 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_STATFS
],
3882 nfs_fattr_init(fsstat
->fattr
);
3883 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3886 static int nfs4_proc_statfs(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsstat
*fsstat
)
3888 struct nfs4_exception exception
= { };
3891 err
= nfs4_handle_exception(server
,
3892 _nfs4_proc_statfs(server
, fhandle
, fsstat
),
3894 } while (exception
.retry
);
3898 static int _nfs4_do_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3899 struct nfs_fsinfo
*fsinfo
)
3901 struct nfs4_fsinfo_arg args
= {
3903 .bitmask
= server
->attr_bitmask
,
3905 struct nfs4_fsinfo_res res
= {
3908 struct rpc_message msg
= {
3909 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FSINFO
],
3914 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3917 static int nfs4_do_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsinfo
*fsinfo
)
3919 struct nfs4_exception exception
= { };
3920 unsigned long now
= jiffies
;
3924 err
= _nfs4_do_fsinfo(server
, fhandle
, fsinfo
);
3925 trace_nfs4_fsinfo(server
, fhandle
, fsinfo
->fattr
, err
);
3927 struct nfs_client
*clp
= server
->nfs_client
;
3929 spin_lock(&clp
->cl_lock
);
3930 clp
->cl_lease_time
= fsinfo
->lease_time
* HZ
;
3931 clp
->cl_last_renewal
= now
;
3932 spin_unlock(&clp
->cl_lock
);
3935 err
= nfs4_handle_exception(server
, err
, &exception
);
3936 } while (exception
.retry
);
3940 static int nfs4_proc_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsinfo
*fsinfo
)
3944 nfs_fattr_init(fsinfo
->fattr
);
3945 error
= nfs4_do_fsinfo(server
, fhandle
, fsinfo
);
3947 /* block layout checks this! */
3948 server
->pnfs_blksize
= fsinfo
->blksize
;
3949 set_pnfs_layoutdriver(server
, fhandle
, fsinfo
->layouttype
);
3955 static int _nfs4_proc_pathconf(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3956 struct nfs_pathconf
*pathconf
)
3958 struct nfs4_pathconf_arg args
= {
3960 .bitmask
= server
->attr_bitmask
,
3962 struct nfs4_pathconf_res res
= {
3963 .pathconf
= pathconf
,
3965 struct rpc_message msg
= {
3966 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_PATHCONF
],
3971 /* None of the pathconf attributes are mandatory to implement */
3972 if ((args
.bitmask
[0] & nfs4_pathconf_bitmap
[0]) == 0) {
3973 memset(pathconf
, 0, sizeof(*pathconf
));
3977 nfs_fattr_init(pathconf
->fattr
);
3978 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3981 static int nfs4_proc_pathconf(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3982 struct nfs_pathconf
*pathconf
)
3984 struct nfs4_exception exception
= { };
3988 err
= nfs4_handle_exception(server
,
3989 _nfs4_proc_pathconf(server
, fhandle
, pathconf
),
3991 } while (exception
.retry
);
3995 int nfs4_set_rw_stateid(nfs4_stateid
*stateid
,
3996 const struct nfs_open_context
*ctx
,
3997 const struct nfs_lock_context
*l_ctx
,
4000 const struct nfs_lockowner
*lockowner
= NULL
;
4003 lockowner
= &l_ctx
->lockowner
;
4004 return nfs4_select_rw_stateid(stateid
, ctx
->state
, fmode
, lockowner
);
4006 EXPORT_SYMBOL_GPL(nfs4_set_rw_stateid
);
4008 static bool nfs4_stateid_is_current(nfs4_stateid
*stateid
,
4009 const struct nfs_open_context
*ctx
,
4010 const struct nfs_lock_context
*l_ctx
,
4013 nfs4_stateid current_stateid
;
4015 if (nfs4_set_rw_stateid(¤t_stateid
, ctx
, l_ctx
, fmode
))
4017 return nfs4_stateid_match(stateid
, ¤t_stateid
);
4020 static bool nfs4_error_stateid_expired(int err
)
4023 case -NFS4ERR_DELEG_REVOKED
:
4024 case -NFS4ERR_ADMIN_REVOKED
:
4025 case -NFS4ERR_BAD_STATEID
:
4026 case -NFS4ERR_STALE_STATEID
:
4027 case -NFS4ERR_OLD_STATEID
:
4028 case -NFS4ERR_OPENMODE
:
4029 case -NFS4ERR_EXPIRED
:
4035 void __nfs4_read_done_cb(struct nfs_read_data
*data
)
4037 nfs_invalidate_atime(data
->header
->inode
);
4040 static int nfs4_read_done_cb(struct rpc_task
*task
, struct nfs_read_data
*data
)
4042 struct nfs_server
*server
= NFS_SERVER(data
->header
->inode
);
4044 trace_nfs4_read(data
, task
->tk_status
);
4045 if (nfs4_async_handle_error(task
, server
, data
->args
.context
->state
) == -EAGAIN
) {
4046 rpc_restart_call_prepare(task
);
4050 __nfs4_read_done_cb(data
);
4051 if (task
->tk_status
> 0)
4052 renew_lease(server
, data
->timestamp
);
4056 static bool nfs4_read_stateid_changed(struct rpc_task
*task
,
4057 struct nfs_readargs
*args
)
4060 if (!nfs4_error_stateid_expired(task
->tk_status
) ||
4061 nfs4_stateid_is_current(&args
->stateid
,
4066 rpc_restart_call_prepare(task
);
4070 static int nfs4_read_done(struct rpc_task
*task
, struct nfs_read_data
*data
)
4073 dprintk("--> %s\n", __func__
);
4075 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
4077 if (nfs4_read_stateid_changed(task
, &data
->args
))
4079 return data
->read_done_cb
? data
->read_done_cb(task
, data
) :
4080 nfs4_read_done_cb(task
, data
);
4083 static void nfs4_proc_read_setup(struct nfs_read_data
*data
, struct rpc_message
*msg
)
4085 data
->timestamp
= jiffies
;
4086 data
->read_done_cb
= nfs4_read_done_cb
;
4087 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READ
];
4088 nfs4_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 0);
4091 static int nfs4_proc_read_rpc_prepare(struct rpc_task
*task
, struct nfs_read_data
*data
)
4093 if (nfs4_setup_sequence(NFS_SERVER(data
->header
->inode
),
4094 &data
->args
.seq_args
,
4098 if (nfs4_set_rw_stateid(&data
->args
.stateid
, data
->args
.context
,
4099 data
->args
.lock_context
, FMODE_READ
) == -EIO
)
4101 if (unlikely(test_bit(NFS_CONTEXT_BAD
, &data
->args
.context
->flags
)))
4106 static int nfs4_write_done_cb(struct rpc_task
*task
, struct nfs_write_data
*data
)
4108 struct inode
*inode
= data
->header
->inode
;
4110 trace_nfs4_write(data
, task
->tk_status
);
4111 if (nfs4_async_handle_error(task
, NFS_SERVER(inode
), data
->args
.context
->state
) == -EAGAIN
) {
4112 rpc_restart_call_prepare(task
);
4115 if (task
->tk_status
>= 0) {
4116 renew_lease(NFS_SERVER(inode
), data
->timestamp
);
4117 nfs_post_op_update_inode_force_wcc(inode
, &data
->fattr
);
4122 static bool nfs4_write_stateid_changed(struct rpc_task
*task
,
4123 struct nfs_writeargs
*args
)
4126 if (!nfs4_error_stateid_expired(task
->tk_status
) ||
4127 nfs4_stateid_is_current(&args
->stateid
,
4132 rpc_restart_call_prepare(task
);
4136 static int nfs4_write_done(struct rpc_task
*task
, struct nfs_write_data
*data
)
4138 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
4140 if (nfs4_write_stateid_changed(task
, &data
->args
))
4142 return data
->write_done_cb
? data
->write_done_cb(task
, data
) :
4143 nfs4_write_done_cb(task
, data
);
4147 bool nfs4_write_need_cache_consistency_data(const struct nfs_write_data
*data
)
4149 const struct nfs_pgio_header
*hdr
= data
->header
;
4151 /* Don't request attributes for pNFS or O_DIRECT writes */
4152 if (data
->ds_clp
!= NULL
|| hdr
->dreq
!= NULL
)
4154 /* Otherwise, request attributes if and only if we don't hold
4157 return nfs4_have_delegation(hdr
->inode
, FMODE_READ
) == 0;
4160 static void nfs4_proc_write_setup(struct nfs_write_data
*data
, struct rpc_message
*msg
)
4162 struct nfs_server
*server
= NFS_SERVER(data
->header
->inode
);
4164 if (!nfs4_write_need_cache_consistency_data(data
)) {
4165 data
->args
.bitmask
= NULL
;
4166 data
->res
.fattr
= NULL
;
4168 data
->args
.bitmask
= server
->cache_consistency_bitmask
;
4170 if (!data
->write_done_cb
)
4171 data
->write_done_cb
= nfs4_write_done_cb
;
4172 data
->res
.server
= server
;
4173 data
->timestamp
= jiffies
;
4175 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_WRITE
];
4176 nfs4_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
4179 static int nfs4_proc_write_rpc_prepare(struct rpc_task
*task
, struct nfs_write_data
*data
)
4181 if (nfs4_setup_sequence(NFS_SERVER(data
->header
->inode
),
4182 &data
->args
.seq_args
,
4186 if (nfs4_set_rw_stateid(&data
->args
.stateid
, data
->args
.context
,
4187 data
->args
.lock_context
, FMODE_WRITE
) == -EIO
)
4189 if (unlikely(test_bit(NFS_CONTEXT_BAD
, &data
->args
.context
->flags
)))
4194 static void nfs4_proc_commit_rpc_prepare(struct rpc_task
*task
, struct nfs_commit_data
*data
)
4196 nfs4_setup_sequence(NFS_SERVER(data
->inode
),
4197 &data
->args
.seq_args
,
4202 static int nfs4_commit_done_cb(struct rpc_task
*task
, struct nfs_commit_data
*data
)
4204 struct inode
*inode
= data
->inode
;
4206 trace_nfs4_commit(data
, task
->tk_status
);
4207 if (nfs4_async_handle_error(task
, NFS_SERVER(inode
), NULL
) == -EAGAIN
) {
4208 rpc_restart_call_prepare(task
);
4214 static int nfs4_commit_done(struct rpc_task
*task
, struct nfs_commit_data
*data
)
4216 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
4218 return data
->commit_done_cb(task
, data
);
4221 static void nfs4_proc_commit_setup(struct nfs_commit_data
*data
, struct rpc_message
*msg
)
4223 struct nfs_server
*server
= NFS_SERVER(data
->inode
);
4225 if (data
->commit_done_cb
== NULL
)
4226 data
->commit_done_cb
= nfs4_commit_done_cb
;
4227 data
->res
.server
= server
;
4228 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_COMMIT
];
4229 nfs4_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
4232 struct nfs4_renewdata
{
4233 struct nfs_client
*client
;
4234 unsigned long timestamp
;
4238 * nfs4_proc_async_renew(): This is not one of the nfs_rpc_ops; it is a special
4239 * standalone procedure for queueing an asynchronous RENEW.
4241 static void nfs4_renew_release(void *calldata
)
4243 struct nfs4_renewdata
*data
= calldata
;
4244 struct nfs_client
*clp
= data
->client
;
4246 if (atomic_read(&clp
->cl_count
) > 1)
4247 nfs4_schedule_state_renewal(clp
);
4248 nfs_put_client(clp
);
4252 static void nfs4_renew_done(struct rpc_task
*task
, void *calldata
)
4254 struct nfs4_renewdata
*data
= calldata
;
4255 struct nfs_client
*clp
= data
->client
;
4256 unsigned long timestamp
= data
->timestamp
;
4258 trace_nfs4_renew_async(clp
, task
->tk_status
);
4259 switch (task
->tk_status
) {
4262 case -NFS4ERR_LEASE_MOVED
:
4263 nfs4_schedule_lease_moved_recovery(clp
);
4266 /* Unless we're shutting down, schedule state recovery! */
4267 if (test_bit(NFS_CS_RENEWD
, &clp
->cl_res_state
) == 0)
4269 if (task
->tk_status
!= NFS4ERR_CB_PATH_DOWN
) {
4270 nfs4_schedule_lease_recovery(clp
);
4273 nfs4_schedule_path_down_recovery(clp
);
4275 do_renew_lease(clp
, timestamp
);
4278 static const struct rpc_call_ops nfs4_renew_ops
= {
4279 .rpc_call_done
= nfs4_renew_done
,
4280 .rpc_release
= nfs4_renew_release
,
4283 static int nfs4_proc_async_renew(struct nfs_client
*clp
, struct rpc_cred
*cred
, unsigned renew_flags
)
4285 struct rpc_message msg
= {
4286 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENEW
],
4290 struct nfs4_renewdata
*data
;
4292 if (renew_flags
== 0)
4294 if (!atomic_inc_not_zero(&clp
->cl_count
))
4296 data
= kmalloc(sizeof(*data
), GFP_NOFS
);
4300 data
->timestamp
= jiffies
;
4301 return rpc_call_async(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
,
4302 &nfs4_renew_ops
, data
);
4305 static int nfs4_proc_renew(struct nfs_client
*clp
, struct rpc_cred
*cred
)
4307 struct rpc_message msg
= {
4308 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENEW
],
4312 unsigned long now
= jiffies
;
4315 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
4318 do_renew_lease(clp
, now
);
4322 static inline int nfs4_server_supports_acls(struct nfs_server
*server
)
4324 return (server
->caps
& NFS_CAP_ACLS
)
4325 && (server
->acl_bitmask
& ACL4_SUPPORT_ALLOW_ACL
)
4326 && (server
->acl_bitmask
& ACL4_SUPPORT_DENY_ACL
);
4329 /* Assuming that XATTR_SIZE_MAX is a multiple of PAGE_SIZE, and that
4330 * it's OK to put sizeof(void) * (XATTR_SIZE_MAX/PAGE_SIZE) bytes on
4333 #define NFS4ACL_MAXPAGES DIV_ROUND_UP(XATTR_SIZE_MAX, PAGE_SIZE)
4335 static int buf_to_pages_noslab(const void *buf
, size_t buflen
,
4336 struct page
**pages
, unsigned int *pgbase
)
4338 struct page
*newpage
, **spages
;
4344 len
= min_t(size_t, PAGE_SIZE
, buflen
);
4345 newpage
= alloc_page(GFP_KERNEL
);
4347 if (newpage
== NULL
)
4349 memcpy(page_address(newpage
), buf
, len
);
4354 } while (buflen
!= 0);
4360 __free_page(spages
[rc
-1]);
4364 struct nfs4_cached_acl
{
4370 static void nfs4_set_cached_acl(struct inode
*inode
, struct nfs4_cached_acl
*acl
)
4372 struct nfs_inode
*nfsi
= NFS_I(inode
);
4374 spin_lock(&inode
->i_lock
);
4375 kfree(nfsi
->nfs4_acl
);
4376 nfsi
->nfs4_acl
= acl
;
4377 spin_unlock(&inode
->i_lock
);
4380 static void nfs4_zap_acl_attr(struct inode
*inode
)
4382 nfs4_set_cached_acl(inode
, NULL
);
4385 static inline ssize_t
nfs4_read_cached_acl(struct inode
*inode
, char *buf
, size_t buflen
)
4387 struct nfs_inode
*nfsi
= NFS_I(inode
);
4388 struct nfs4_cached_acl
*acl
;
4391 spin_lock(&inode
->i_lock
);
4392 acl
= nfsi
->nfs4_acl
;
4395 if (buf
== NULL
) /* user is just asking for length */
4397 if (acl
->cached
== 0)
4399 ret
= -ERANGE
; /* see getxattr(2) man page */
4400 if (acl
->len
> buflen
)
4402 memcpy(buf
, acl
->data
, acl
->len
);
4406 spin_unlock(&inode
->i_lock
);
4410 static void nfs4_write_cached_acl(struct inode
*inode
, struct page
**pages
, size_t pgbase
, size_t acl_len
)
4412 struct nfs4_cached_acl
*acl
;
4413 size_t buflen
= sizeof(*acl
) + acl_len
;
4415 if (buflen
<= PAGE_SIZE
) {
4416 acl
= kmalloc(buflen
, GFP_KERNEL
);
4420 _copy_from_pages(acl
->data
, pages
, pgbase
, acl_len
);
4422 acl
= kmalloc(sizeof(*acl
), GFP_KERNEL
);
4429 nfs4_set_cached_acl(inode
, acl
);
4433 * The getxattr API returns the required buffer length when called with a
4434 * NULL buf. The NFSv4 acl tool then calls getxattr again after allocating
4435 * the required buf. On a NULL buf, we send a page of data to the server
4436 * guessing that the ACL request can be serviced by a page. If so, we cache
4437 * up to the page of ACL data, and the 2nd call to getxattr is serviced by
4438 * the cache. If not so, we throw away the page, and cache the required
4439 * length. The next getxattr call will then produce another round trip to
4440 * the server, this time with the input buf of the required size.
4442 static ssize_t
__nfs4_get_acl_uncached(struct inode
*inode
, void *buf
, size_t buflen
)
4444 struct page
*pages
[NFS4ACL_MAXPAGES
] = {NULL
, };
4445 struct nfs_getaclargs args
= {
4446 .fh
= NFS_FH(inode
),
4450 struct nfs_getaclres res
= {
4453 struct rpc_message msg
= {
4454 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETACL
],
4458 unsigned int npages
= DIV_ROUND_UP(buflen
, PAGE_SIZE
);
4459 int ret
= -ENOMEM
, i
;
4461 /* As long as we're doing a round trip to the server anyway,
4462 * let's be prepared for a page of acl data. */
4465 if (npages
> ARRAY_SIZE(pages
))
4468 for (i
= 0; i
< npages
; i
++) {
4469 pages
[i
] = alloc_page(GFP_KERNEL
);
4474 /* for decoding across pages */
4475 res
.acl_scratch
= alloc_page(GFP_KERNEL
);
4476 if (!res
.acl_scratch
)
4479 args
.acl_len
= npages
* PAGE_SIZE
;
4480 args
.acl_pgbase
= 0;
4482 dprintk("%s buf %p buflen %zu npages %d args.acl_len %zu\n",
4483 __func__
, buf
, buflen
, npages
, args
.acl_len
);
4484 ret
= nfs4_call_sync(NFS_SERVER(inode
)->client
, NFS_SERVER(inode
),
4485 &msg
, &args
.seq_args
, &res
.seq_res
, 0);
4489 /* Handle the case where the passed-in buffer is too short */
4490 if (res
.acl_flags
& NFS4_ACL_TRUNC
) {
4491 /* Did the user only issue a request for the acl length? */
4497 nfs4_write_cached_acl(inode
, pages
, res
.acl_data_offset
, res
.acl_len
);
4499 if (res
.acl_len
> buflen
) {
4503 _copy_from_pages(buf
, pages
, res
.acl_data_offset
, res
.acl_len
);
4508 for (i
= 0; i
< npages
; i
++)
4510 __free_page(pages
[i
]);
4511 if (res
.acl_scratch
)
4512 __free_page(res
.acl_scratch
);
4516 static ssize_t
nfs4_get_acl_uncached(struct inode
*inode
, void *buf
, size_t buflen
)
4518 struct nfs4_exception exception
= { };
4521 ret
= __nfs4_get_acl_uncached(inode
, buf
, buflen
);
4522 trace_nfs4_get_acl(inode
, ret
);
4525 ret
= nfs4_handle_exception(NFS_SERVER(inode
), ret
, &exception
);
4526 } while (exception
.retry
);
4530 static ssize_t
nfs4_proc_get_acl(struct inode
*inode
, void *buf
, size_t buflen
)
4532 struct nfs_server
*server
= NFS_SERVER(inode
);
4535 if (!nfs4_server_supports_acls(server
))
4537 ret
= nfs_revalidate_inode(server
, inode
);
4540 if (NFS_I(inode
)->cache_validity
& NFS_INO_INVALID_ACL
)
4541 nfs_zap_acl_cache(inode
);
4542 ret
= nfs4_read_cached_acl(inode
, buf
, buflen
);
4544 /* -ENOENT is returned if there is no ACL or if there is an ACL
4545 * but no cached acl data, just the acl length */
4547 return nfs4_get_acl_uncached(inode
, buf
, buflen
);
4550 static int __nfs4_proc_set_acl(struct inode
*inode
, const void *buf
, size_t buflen
)
4552 struct nfs_server
*server
= NFS_SERVER(inode
);
4553 struct page
*pages
[NFS4ACL_MAXPAGES
];
4554 struct nfs_setaclargs arg
= {
4555 .fh
= NFS_FH(inode
),
4559 struct nfs_setaclres res
;
4560 struct rpc_message msg
= {
4561 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETACL
],
4565 unsigned int npages
= DIV_ROUND_UP(buflen
, PAGE_SIZE
);
4568 if (!nfs4_server_supports_acls(server
))
4570 if (npages
> ARRAY_SIZE(pages
))
4572 i
= buf_to_pages_noslab(buf
, buflen
, arg
.acl_pages
, &arg
.acl_pgbase
);
4575 nfs4_inode_return_delegation(inode
);
4576 ret
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
4579 * Free each page after tx, so the only ref left is
4580 * held by the network stack
4583 put_page(pages
[i
-1]);
4586 * Acl update can result in inode attribute update.
4587 * so mark the attribute cache invalid.
4589 spin_lock(&inode
->i_lock
);
4590 NFS_I(inode
)->cache_validity
|= NFS_INO_INVALID_ATTR
;
4591 spin_unlock(&inode
->i_lock
);
4592 nfs_access_zap_cache(inode
);
4593 nfs_zap_acl_cache(inode
);
4597 static int nfs4_proc_set_acl(struct inode
*inode
, const void *buf
, size_t buflen
)
4599 struct nfs4_exception exception
= { };
4602 err
= __nfs4_proc_set_acl(inode
, buf
, buflen
);
4603 trace_nfs4_set_acl(inode
, err
);
4604 err
= nfs4_handle_exception(NFS_SERVER(inode
), err
,
4606 } while (exception
.retry
);
4610 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
4611 static int _nfs4_get_security_label(struct inode
*inode
, void *buf
,
4614 struct nfs_server
*server
= NFS_SERVER(inode
);
4615 struct nfs_fattr fattr
;
4616 struct nfs4_label label
= {0, 0, buflen
, buf
};
4618 u32 bitmask
[3] = { 0, 0, FATTR4_WORD2_SECURITY_LABEL
};
4619 struct nfs4_getattr_arg arg
= {
4620 .fh
= NFS_FH(inode
),
4623 struct nfs4_getattr_res res
= {
4628 struct rpc_message msg
= {
4629 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETATTR
],
4635 nfs_fattr_init(&fattr
);
4637 ret
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 0);
4640 if (!(fattr
.valid
& NFS_ATTR_FATTR_V4_SECURITY_LABEL
))
4642 if (buflen
< label
.len
)
4647 static int nfs4_get_security_label(struct inode
*inode
, void *buf
,
4650 struct nfs4_exception exception
= { };
4653 if (!nfs_server_capable(inode
, NFS_CAP_SECURITY_LABEL
))
4657 err
= _nfs4_get_security_label(inode
, buf
, buflen
);
4658 trace_nfs4_get_security_label(inode
, err
);
4659 err
= nfs4_handle_exception(NFS_SERVER(inode
), err
,
4661 } while (exception
.retry
);
4665 static int _nfs4_do_set_security_label(struct inode
*inode
,
4666 struct nfs4_label
*ilabel
,
4667 struct nfs_fattr
*fattr
,
4668 struct nfs4_label
*olabel
)
4671 struct iattr sattr
= {0};
4672 struct nfs_server
*server
= NFS_SERVER(inode
);
4673 const u32 bitmask
[3] = { 0, 0, FATTR4_WORD2_SECURITY_LABEL
};
4674 struct nfs_setattrargs arg
= {
4675 .fh
= NFS_FH(inode
),
4681 struct nfs_setattrres res
= {
4686 struct rpc_message msg
= {
4687 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETATTR
],
4693 nfs4_stateid_copy(&arg
.stateid
, &zero_stateid
);
4695 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
4697 dprintk("%s failed: %d\n", __func__
, status
);
4702 static int nfs4_do_set_security_label(struct inode
*inode
,
4703 struct nfs4_label
*ilabel
,
4704 struct nfs_fattr
*fattr
,
4705 struct nfs4_label
*olabel
)
4707 struct nfs4_exception exception
= { };
4711 err
= _nfs4_do_set_security_label(inode
, ilabel
,
4713 trace_nfs4_set_security_label(inode
, err
);
4714 err
= nfs4_handle_exception(NFS_SERVER(inode
), err
,
4716 } while (exception
.retry
);
4721 nfs4_set_security_label(struct dentry
*dentry
, const void *buf
, size_t buflen
)
4723 struct nfs4_label ilabel
, *olabel
= NULL
;
4724 struct nfs_fattr fattr
;
4725 struct rpc_cred
*cred
;
4726 struct inode
*inode
= dentry
->d_inode
;
4729 if (!nfs_server_capable(inode
, NFS_CAP_SECURITY_LABEL
))
4732 nfs_fattr_init(&fattr
);
4736 ilabel
.label
= (char *)buf
;
4737 ilabel
.len
= buflen
;
4739 cred
= rpc_lookup_cred();
4741 return PTR_ERR(cred
);
4743 olabel
= nfs4_label_alloc(NFS_SERVER(inode
), GFP_KERNEL
);
4744 if (IS_ERR(olabel
)) {
4745 status
= -PTR_ERR(olabel
);
4749 status
= nfs4_do_set_security_label(inode
, &ilabel
, &fattr
, olabel
);
4751 nfs_setsecurity(inode
, &fattr
, olabel
);
4753 nfs4_label_free(olabel
);
4758 #endif /* CONFIG_NFS_V4_SECURITY_LABEL */
4762 nfs4_async_handle_error(struct rpc_task
*task
, const struct nfs_server
*server
, struct nfs4_state
*state
)
4764 struct nfs_client
*clp
= server
->nfs_client
;
4766 if (task
->tk_status
>= 0)
4768 switch(task
->tk_status
) {
4769 case -NFS4ERR_DELEG_REVOKED
:
4770 case -NFS4ERR_ADMIN_REVOKED
:
4771 case -NFS4ERR_BAD_STATEID
:
4774 nfs_remove_bad_delegation(state
->inode
);
4775 case -NFS4ERR_OPENMODE
:
4778 if (nfs4_schedule_stateid_recovery(server
, state
) < 0)
4779 goto recovery_failed
;
4780 goto wait_on_recovery
;
4781 case -NFS4ERR_EXPIRED
:
4782 if (state
!= NULL
) {
4783 if (nfs4_schedule_stateid_recovery(server
, state
) < 0)
4784 goto recovery_failed
;
4786 case -NFS4ERR_STALE_STATEID
:
4787 case -NFS4ERR_STALE_CLIENTID
:
4788 nfs4_schedule_lease_recovery(clp
);
4789 goto wait_on_recovery
;
4790 case -NFS4ERR_MOVED
:
4791 if (nfs4_schedule_migration_recovery(server
) < 0)
4792 goto recovery_failed
;
4793 goto wait_on_recovery
;
4794 case -NFS4ERR_LEASE_MOVED
:
4795 nfs4_schedule_lease_moved_recovery(clp
);
4796 goto wait_on_recovery
;
4797 #if defined(CONFIG_NFS_V4_1)
4798 case -NFS4ERR_BADSESSION
:
4799 case -NFS4ERR_BADSLOT
:
4800 case -NFS4ERR_BAD_HIGH_SLOT
:
4801 case -NFS4ERR_DEADSESSION
:
4802 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
4803 case -NFS4ERR_SEQ_FALSE_RETRY
:
4804 case -NFS4ERR_SEQ_MISORDERED
:
4805 dprintk("%s ERROR %d, Reset session\n", __func__
,
4807 nfs4_schedule_session_recovery(clp
->cl_session
, task
->tk_status
);
4808 goto wait_on_recovery
;
4809 #endif /* CONFIG_NFS_V4_1 */
4810 case -NFS4ERR_DELAY
:
4811 nfs_inc_server_stats(server
, NFSIOS_DELAY
);
4812 case -NFS4ERR_GRACE
:
4813 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
4814 case -NFS4ERR_RETRY_UNCACHED_REP
:
4815 case -NFS4ERR_OLD_STATEID
:
4818 task
->tk_status
= nfs4_map_errors(task
->tk_status
);
4821 task
->tk_status
= -EIO
;
4824 rpc_sleep_on(&clp
->cl_rpcwaitq
, task
, NULL
);
4825 if (test_bit(NFS4CLNT_MANAGER_RUNNING
, &clp
->cl_state
) == 0)
4826 rpc_wake_up_queued_task(&clp
->cl_rpcwaitq
, task
);
4827 if (test_bit(NFS_MIG_FAILED
, &server
->mig_status
))
4828 goto recovery_failed
;
4830 task
->tk_status
= 0;
4834 static void nfs4_init_boot_verifier(const struct nfs_client
*clp
,
4835 nfs4_verifier
*bootverf
)
4839 if (test_bit(NFS4CLNT_PURGE_STATE
, &clp
->cl_state
)) {
4840 /* An impossible timestamp guarantees this value
4841 * will never match a generated boot time. */
4843 verf
[1] = cpu_to_be32(NSEC_PER_SEC
+ 1);
4845 struct nfs_net
*nn
= net_generic(clp
->cl_net
, nfs_net_id
);
4846 verf
[0] = cpu_to_be32(nn
->boot_time
.tv_sec
);
4847 verf
[1] = cpu_to_be32(nn
->boot_time
.tv_nsec
);
4849 memcpy(bootverf
->data
, verf
, sizeof(bootverf
->data
));
4853 nfs4_init_nonuniform_client_string(const struct nfs_client
*clp
,
4854 char *buf
, size_t len
)
4856 unsigned int result
;
4859 result
= scnprintf(buf
, len
, "Linux NFSv4.0 %s/%s %s",
4861 rpc_peeraddr2str(clp
->cl_rpcclient
,
4863 rpc_peeraddr2str(clp
->cl_rpcclient
,
4864 RPC_DISPLAY_PROTO
));
4870 nfs4_init_uniform_client_string(const struct nfs_client
*clp
,
4871 char *buf
, size_t len
)
4873 const char *nodename
= clp
->cl_rpcclient
->cl_nodename
;
4875 if (nfs4_client_id_uniquifier
[0] != '\0')
4876 return scnprintf(buf
, len
, "Linux NFSv%u.%u %s/%s",
4877 clp
->rpc_ops
->version
,
4878 clp
->cl_minorversion
,
4879 nfs4_client_id_uniquifier
,
4881 return scnprintf(buf
, len
, "Linux NFSv%u.%u %s",
4882 clp
->rpc_ops
->version
, clp
->cl_minorversion
,
4887 * nfs4_proc_setclientid - Negotiate client ID
4888 * @clp: state data structure
4889 * @program: RPC program for NFSv4 callback service
4890 * @port: IP port number for NFS4 callback service
4891 * @cred: RPC credential to use for this call
4892 * @res: where to place the result
4894 * Returns zero, a negative errno, or a negative NFS4ERR status code.
4896 int nfs4_proc_setclientid(struct nfs_client
*clp
, u32 program
,
4897 unsigned short port
, struct rpc_cred
*cred
,
4898 struct nfs4_setclientid_res
*res
)
4900 nfs4_verifier sc_verifier
;
4901 struct nfs4_setclientid setclientid
= {
4902 .sc_verifier
= &sc_verifier
,
4904 .sc_cb_ident
= clp
->cl_cb_ident
,
4906 struct rpc_message msg
= {
4907 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETCLIENTID
],
4908 .rpc_argp
= &setclientid
,
4914 /* nfs_client_id4 */
4915 nfs4_init_boot_verifier(clp
, &sc_verifier
);
4916 if (test_bit(NFS_CS_MIGRATION
, &clp
->cl_flags
))
4917 setclientid
.sc_name_len
=
4918 nfs4_init_uniform_client_string(clp
,
4919 setclientid
.sc_name
,
4920 sizeof(setclientid
.sc_name
));
4922 setclientid
.sc_name_len
=
4923 nfs4_init_nonuniform_client_string(clp
,
4924 setclientid
.sc_name
,
4925 sizeof(setclientid
.sc_name
));
4928 setclientid
.sc_netid_len
= scnprintf(setclientid
.sc_netid
,
4929 sizeof(setclientid
.sc_netid
), "%s",
4930 rpc_peeraddr2str(clp
->cl_rpcclient
,
4931 RPC_DISPLAY_NETID
));
4933 setclientid
.sc_uaddr_len
= scnprintf(setclientid
.sc_uaddr
,
4934 sizeof(setclientid
.sc_uaddr
), "%s.%u.%u",
4935 clp
->cl_ipaddr
, port
>> 8, port
& 255);
4937 dprintk("NFS call setclientid auth=%s, '%.*s'\n",
4938 clp
->cl_rpcclient
->cl_auth
->au_ops
->au_name
,
4939 setclientid
.sc_name_len
, setclientid
.sc_name
);
4940 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
4941 trace_nfs4_setclientid(clp
, status
);
4942 dprintk("NFS reply setclientid: %d\n", status
);
4947 * nfs4_proc_setclientid_confirm - Confirm client ID
4948 * @clp: state data structure
4949 * @res: result of a previous SETCLIENTID
4950 * @cred: RPC credential to use for this call
4952 * Returns zero, a negative errno, or a negative NFS4ERR status code.
4954 int nfs4_proc_setclientid_confirm(struct nfs_client
*clp
,
4955 struct nfs4_setclientid_res
*arg
,
4956 struct rpc_cred
*cred
)
4958 struct rpc_message msg
= {
4959 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETCLIENTID_CONFIRM
],
4965 dprintk("NFS call setclientid_confirm auth=%s, (client ID %llx)\n",
4966 clp
->cl_rpcclient
->cl_auth
->au_ops
->au_name
,
4968 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
4969 trace_nfs4_setclientid_confirm(clp
, status
);
4970 dprintk("NFS reply setclientid_confirm: %d\n", status
);
4974 struct nfs4_delegreturndata
{
4975 struct nfs4_delegreturnargs args
;
4976 struct nfs4_delegreturnres res
;
4978 nfs4_stateid stateid
;
4979 unsigned long timestamp
;
4980 struct nfs_fattr fattr
;
4984 static void nfs4_delegreturn_done(struct rpc_task
*task
, void *calldata
)
4986 struct nfs4_delegreturndata
*data
= calldata
;
4988 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
4991 trace_nfs4_delegreturn_exit(&data
->args
, &data
->res
, task
->tk_status
);
4992 switch (task
->tk_status
) {
4994 renew_lease(data
->res
.server
, data
->timestamp
);
4996 case -NFS4ERR_ADMIN_REVOKED
:
4997 case -NFS4ERR_DELEG_REVOKED
:
4998 case -NFS4ERR_BAD_STATEID
:
4999 case -NFS4ERR_OLD_STATEID
:
5000 case -NFS4ERR_STALE_STATEID
:
5001 case -NFS4ERR_EXPIRED
:
5002 task
->tk_status
= 0;
5005 if (nfs4_async_handle_error(task
, data
->res
.server
, NULL
) ==
5007 rpc_restart_call_prepare(task
);
5011 data
->rpc_status
= task
->tk_status
;
5014 static void nfs4_delegreturn_release(void *calldata
)
5019 static void nfs4_delegreturn_prepare(struct rpc_task
*task
, void *data
)
5021 struct nfs4_delegreturndata
*d_data
;
5023 d_data
= (struct nfs4_delegreturndata
*)data
;
5025 nfs4_setup_sequence(d_data
->res
.server
,
5026 &d_data
->args
.seq_args
,
5027 &d_data
->res
.seq_res
,
5031 static const struct rpc_call_ops nfs4_delegreturn_ops
= {
5032 .rpc_call_prepare
= nfs4_delegreturn_prepare
,
5033 .rpc_call_done
= nfs4_delegreturn_done
,
5034 .rpc_release
= nfs4_delegreturn_release
,
5037 static int _nfs4_proc_delegreturn(struct inode
*inode
, struct rpc_cred
*cred
, const nfs4_stateid
*stateid
, int issync
)
5039 struct nfs4_delegreturndata
*data
;
5040 struct nfs_server
*server
= NFS_SERVER(inode
);
5041 struct rpc_task
*task
;
5042 struct rpc_message msg
= {
5043 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DELEGRETURN
],
5046 struct rpc_task_setup task_setup_data
= {
5047 .rpc_client
= server
->client
,
5048 .rpc_message
= &msg
,
5049 .callback_ops
= &nfs4_delegreturn_ops
,
5050 .flags
= RPC_TASK_ASYNC
,
5054 data
= kzalloc(sizeof(*data
), GFP_NOFS
);
5057 nfs4_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
5058 data
->args
.fhandle
= &data
->fh
;
5059 data
->args
.stateid
= &data
->stateid
;
5060 data
->args
.bitmask
= server
->cache_consistency_bitmask
;
5061 nfs_copy_fh(&data
->fh
, NFS_FH(inode
));
5062 nfs4_stateid_copy(&data
->stateid
, stateid
);
5063 data
->res
.fattr
= &data
->fattr
;
5064 data
->res
.server
= server
;
5065 nfs_fattr_init(data
->res
.fattr
);
5066 data
->timestamp
= jiffies
;
5067 data
->rpc_status
= 0;
5069 task_setup_data
.callback_data
= data
;
5070 msg
.rpc_argp
= &data
->args
;
5071 msg
.rpc_resp
= &data
->res
;
5072 task
= rpc_run_task(&task_setup_data
);
5074 return PTR_ERR(task
);
5077 status
= nfs4_wait_for_completion_rpc_task(task
);
5080 status
= data
->rpc_status
;
5082 nfs_post_op_update_inode_force_wcc(inode
, &data
->fattr
);
5084 nfs_refresh_inode(inode
, &data
->fattr
);
5090 int nfs4_proc_delegreturn(struct inode
*inode
, struct rpc_cred
*cred
, const nfs4_stateid
*stateid
, int issync
)
5092 struct nfs_server
*server
= NFS_SERVER(inode
);
5093 struct nfs4_exception exception
= { };
5096 err
= _nfs4_proc_delegreturn(inode
, cred
, stateid
, issync
);
5097 trace_nfs4_delegreturn(inode
, err
);
5099 case -NFS4ERR_STALE_STATEID
:
5100 case -NFS4ERR_EXPIRED
:
5104 err
= nfs4_handle_exception(server
, err
, &exception
);
5105 } while (exception
.retry
);
5109 #define NFS4_LOCK_MINTIMEOUT (1 * HZ)
5110 #define NFS4_LOCK_MAXTIMEOUT (30 * HZ)
5113 * sleep, with exponential backoff, and retry the LOCK operation.
5115 static unsigned long
5116 nfs4_set_lock_task_retry(unsigned long timeout
)
5118 freezable_schedule_timeout_killable_unsafe(timeout
);
5120 if (timeout
> NFS4_LOCK_MAXTIMEOUT
)
5121 return NFS4_LOCK_MAXTIMEOUT
;
5125 static int _nfs4_proc_getlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
5127 struct inode
*inode
= state
->inode
;
5128 struct nfs_server
*server
= NFS_SERVER(inode
);
5129 struct nfs_client
*clp
= server
->nfs_client
;
5130 struct nfs_lockt_args arg
= {
5131 .fh
= NFS_FH(inode
),
5134 struct nfs_lockt_res res
= {
5137 struct rpc_message msg
= {
5138 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCKT
],
5141 .rpc_cred
= state
->owner
->so_cred
,
5143 struct nfs4_lock_state
*lsp
;
5146 arg
.lock_owner
.clientid
= clp
->cl_clientid
;
5147 status
= nfs4_set_lock_state(state
, request
);
5150 lsp
= request
->fl_u
.nfs4_fl
.owner
;
5151 arg
.lock_owner
.id
= lsp
->ls_seqid
.owner_id
;
5152 arg
.lock_owner
.s_dev
= server
->s_dev
;
5153 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
5156 request
->fl_type
= F_UNLCK
;
5158 case -NFS4ERR_DENIED
:
5161 request
->fl_ops
->fl_release_private(request
);
5162 request
->fl_ops
= NULL
;
5167 static int nfs4_proc_getlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
5169 struct nfs4_exception exception
= { };
5173 err
= _nfs4_proc_getlk(state
, cmd
, request
);
5174 trace_nfs4_get_lock(request
, state
, cmd
, err
);
5175 err
= nfs4_handle_exception(NFS_SERVER(state
->inode
), err
,
5177 } while (exception
.retry
);
5181 static int do_vfs_lock(struct file
*file
, struct file_lock
*fl
)
5184 switch (fl
->fl_flags
& (FL_POSIX
|FL_FLOCK
)) {
5186 res
= posix_lock_file_wait(file
, fl
);
5189 res
= flock_lock_file_wait(file
, fl
);
5197 struct nfs4_unlockdata
{
5198 struct nfs_locku_args arg
;
5199 struct nfs_locku_res res
;
5200 struct nfs4_lock_state
*lsp
;
5201 struct nfs_open_context
*ctx
;
5202 struct file_lock fl
;
5203 const struct nfs_server
*server
;
5204 unsigned long timestamp
;
5207 static struct nfs4_unlockdata
*nfs4_alloc_unlockdata(struct file_lock
*fl
,
5208 struct nfs_open_context
*ctx
,
5209 struct nfs4_lock_state
*lsp
,
5210 struct nfs_seqid
*seqid
)
5212 struct nfs4_unlockdata
*p
;
5213 struct inode
*inode
= lsp
->ls_state
->inode
;
5215 p
= kzalloc(sizeof(*p
), GFP_NOFS
);
5218 p
->arg
.fh
= NFS_FH(inode
);
5220 p
->arg
.seqid
= seqid
;
5221 p
->res
.seqid
= seqid
;
5222 p
->arg
.stateid
= &lsp
->ls_stateid
;
5224 atomic_inc(&lsp
->ls_count
);
5225 /* Ensure we don't close file until we're done freeing locks! */
5226 p
->ctx
= get_nfs_open_context(ctx
);
5227 memcpy(&p
->fl
, fl
, sizeof(p
->fl
));
5228 p
->server
= NFS_SERVER(inode
);
5232 static void nfs4_locku_release_calldata(void *data
)
5234 struct nfs4_unlockdata
*calldata
= data
;
5235 nfs_free_seqid(calldata
->arg
.seqid
);
5236 nfs4_put_lock_state(calldata
->lsp
);
5237 put_nfs_open_context(calldata
->ctx
);
5241 static void nfs4_locku_done(struct rpc_task
*task
, void *data
)
5243 struct nfs4_unlockdata
*calldata
= data
;
5245 if (!nfs4_sequence_done(task
, &calldata
->res
.seq_res
))
5247 switch (task
->tk_status
) {
5249 nfs4_stateid_copy(&calldata
->lsp
->ls_stateid
,
5250 &calldata
->res
.stateid
);
5251 renew_lease(calldata
->server
, calldata
->timestamp
);
5253 case -NFS4ERR_BAD_STATEID
:
5254 case -NFS4ERR_OLD_STATEID
:
5255 case -NFS4ERR_STALE_STATEID
:
5256 case -NFS4ERR_EXPIRED
:
5259 if (nfs4_async_handle_error(task
, calldata
->server
, NULL
) == -EAGAIN
)
5260 rpc_restart_call_prepare(task
);
5262 nfs_release_seqid(calldata
->arg
.seqid
);
5265 static void nfs4_locku_prepare(struct rpc_task
*task
, void *data
)
5267 struct nfs4_unlockdata
*calldata
= data
;
5269 if (nfs_wait_on_sequence(calldata
->arg
.seqid
, task
) != 0)
5271 if (test_bit(NFS_LOCK_INITIALIZED
, &calldata
->lsp
->ls_flags
) == 0) {
5272 /* Note: exit _without_ running nfs4_locku_done */
5275 calldata
->timestamp
= jiffies
;
5276 if (nfs4_setup_sequence(calldata
->server
,
5277 &calldata
->arg
.seq_args
,
5278 &calldata
->res
.seq_res
,
5280 nfs_release_seqid(calldata
->arg
.seqid
);
5283 task
->tk_action
= NULL
;
5285 nfs4_sequence_done(task
, &calldata
->res
.seq_res
);
5288 static const struct rpc_call_ops nfs4_locku_ops
= {
5289 .rpc_call_prepare
= nfs4_locku_prepare
,
5290 .rpc_call_done
= nfs4_locku_done
,
5291 .rpc_release
= nfs4_locku_release_calldata
,
5294 static struct rpc_task
*nfs4_do_unlck(struct file_lock
*fl
,
5295 struct nfs_open_context
*ctx
,
5296 struct nfs4_lock_state
*lsp
,
5297 struct nfs_seqid
*seqid
)
5299 struct nfs4_unlockdata
*data
;
5300 struct rpc_message msg
= {
5301 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCKU
],
5302 .rpc_cred
= ctx
->cred
,
5304 struct rpc_task_setup task_setup_data
= {
5305 .rpc_client
= NFS_CLIENT(lsp
->ls_state
->inode
),
5306 .rpc_message
= &msg
,
5307 .callback_ops
= &nfs4_locku_ops
,
5308 .workqueue
= nfsiod_workqueue
,
5309 .flags
= RPC_TASK_ASYNC
,
5312 nfs4_state_protect(NFS_SERVER(lsp
->ls_state
->inode
)->nfs_client
,
5313 NFS_SP4_MACH_CRED_CLEANUP
, &task_setup_data
.rpc_client
, &msg
);
5315 /* Ensure this is an unlock - when canceling a lock, the
5316 * canceled lock is passed in, and it won't be an unlock.
5318 fl
->fl_type
= F_UNLCK
;
5320 data
= nfs4_alloc_unlockdata(fl
, ctx
, lsp
, seqid
);
5322 nfs_free_seqid(seqid
);
5323 return ERR_PTR(-ENOMEM
);
5326 nfs4_init_sequence(&data
->arg
.seq_args
, &data
->res
.seq_res
, 1);
5327 msg
.rpc_argp
= &data
->arg
;
5328 msg
.rpc_resp
= &data
->res
;
5329 task_setup_data
.callback_data
= data
;
5330 return rpc_run_task(&task_setup_data
);
5333 static int nfs4_proc_unlck(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
5335 struct inode
*inode
= state
->inode
;
5336 struct nfs4_state_owner
*sp
= state
->owner
;
5337 struct nfs_inode
*nfsi
= NFS_I(inode
);
5338 struct nfs_seqid
*seqid
;
5339 struct nfs4_lock_state
*lsp
;
5340 struct rpc_task
*task
;
5342 unsigned char fl_flags
= request
->fl_flags
;
5344 status
= nfs4_set_lock_state(state
, request
);
5345 /* Unlock _before_ we do the RPC call */
5346 request
->fl_flags
|= FL_EXISTS
;
5347 /* Exclude nfs_delegation_claim_locks() */
5348 mutex_lock(&sp
->so_delegreturn_mutex
);
5349 /* Exclude nfs4_reclaim_open_stateid() - note nesting! */
5350 down_read(&nfsi
->rwsem
);
5351 if (do_vfs_lock(request
->fl_file
, request
) == -ENOENT
) {
5352 up_read(&nfsi
->rwsem
);
5353 mutex_unlock(&sp
->so_delegreturn_mutex
);
5356 up_read(&nfsi
->rwsem
);
5357 mutex_unlock(&sp
->so_delegreturn_mutex
);
5360 /* Is this a delegated lock? */
5361 lsp
= request
->fl_u
.nfs4_fl
.owner
;
5362 if (test_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
) == 0)
5364 seqid
= nfs_alloc_seqid(&lsp
->ls_seqid
, GFP_KERNEL
);
5368 task
= nfs4_do_unlck(request
, nfs_file_open_context(request
->fl_file
), lsp
, seqid
);
5369 status
= PTR_ERR(task
);
5372 status
= nfs4_wait_for_completion_rpc_task(task
);
5375 request
->fl_flags
= fl_flags
;
5376 trace_nfs4_unlock(request
, state
, F_SETLK
, status
);
5380 struct nfs4_lockdata
{
5381 struct nfs_lock_args arg
;
5382 struct nfs_lock_res res
;
5383 struct nfs4_lock_state
*lsp
;
5384 struct nfs_open_context
*ctx
;
5385 struct file_lock fl
;
5386 unsigned long timestamp
;
5389 struct nfs_server
*server
;
5392 static struct nfs4_lockdata
*nfs4_alloc_lockdata(struct file_lock
*fl
,
5393 struct nfs_open_context
*ctx
, struct nfs4_lock_state
*lsp
,
5396 struct nfs4_lockdata
*p
;
5397 struct inode
*inode
= lsp
->ls_state
->inode
;
5398 struct nfs_server
*server
= NFS_SERVER(inode
);
5400 p
= kzalloc(sizeof(*p
), gfp_mask
);
5404 p
->arg
.fh
= NFS_FH(inode
);
5406 p
->arg
.open_seqid
= nfs_alloc_seqid(&lsp
->ls_state
->owner
->so_seqid
, gfp_mask
);
5407 if (p
->arg
.open_seqid
== NULL
)
5409 p
->arg
.lock_seqid
= nfs_alloc_seqid(&lsp
->ls_seqid
, gfp_mask
);
5410 if (p
->arg
.lock_seqid
== NULL
)
5411 goto out_free_seqid
;
5412 p
->arg
.lock_stateid
= &lsp
->ls_stateid
;
5413 p
->arg
.lock_owner
.clientid
= server
->nfs_client
->cl_clientid
;
5414 p
->arg
.lock_owner
.id
= lsp
->ls_seqid
.owner_id
;
5415 p
->arg
.lock_owner
.s_dev
= server
->s_dev
;
5416 p
->res
.lock_seqid
= p
->arg
.lock_seqid
;
5419 atomic_inc(&lsp
->ls_count
);
5420 p
->ctx
= get_nfs_open_context(ctx
);
5421 memcpy(&p
->fl
, fl
, sizeof(p
->fl
));
5424 nfs_free_seqid(p
->arg
.open_seqid
);
5430 static void nfs4_lock_prepare(struct rpc_task
*task
, void *calldata
)
5432 struct nfs4_lockdata
*data
= calldata
;
5433 struct nfs4_state
*state
= data
->lsp
->ls_state
;
5435 dprintk("%s: begin!\n", __func__
);
5436 if (nfs_wait_on_sequence(data
->arg
.lock_seqid
, task
) != 0)
5438 /* Do we need to do an open_to_lock_owner? */
5439 if (!(data
->arg
.lock_seqid
->sequence
->flags
& NFS_SEQID_CONFIRMED
)) {
5440 if (nfs_wait_on_sequence(data
->arg
.open_seqid
, task
) != 0) {
5441 goto out_release_lock_seqid
;
5443 data
->arg
.open_stateid
= &state
->open_stateid
;
5444 data
->arg
.new_lock_owner
= 1;
5445 data
->res
.open_seqid
= data
->arg
.open_seqid
;
5447 data
->arg
.new_lock_owner
= 0;
5448 if (!nfs4_valid_open_stateid(state
)) {
5449 data
->rpc_status
= -EBADF
;
5450 task
->tk_action
= NULL
;
5451 goto out_release_open_seqid
;
5453 data
->timestamp
= jiffies
;
5454 if (nfs4_setup_sequence(data
->server
,
5455 &data
->arg
.seq_args
,
5459 out_release_open_seqid
:
5460 nfs_release_seqid(data
->arg
.open_seqid
);
5461 out_release_lock_seqid
:
5462 nfs_release_seqid(data
->arg
.lock_seqid
);
5464 nfs4_sequence_done(task
, &data
->res
.seq_res
);
5465 dprintk("%s: done!, ret = %d\n", __func__
, data
->rpc_status
);
5468 static void nfs4_lock_done(struct rpc_task
*task
, void *calldata
)
5470 struct nfs4_lockdata
*data
= calldata
;
5472 dprintk("%s: begin!\n", __func__
);
5474 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
5477 data
->rpc_status
= task
->tk_status
;
5478 if (data
->arg
.new_lock_owner
!= 0) {
5479 if (data
->rpc_status
== 0)
5480 nfs_confirm_seqid(&data
->lsp
->ls_seqid
, 0);
5484 if (data
->rpc_status
== 0) {
5485 nfs4_stateid_copy(&data
->lsp
->ls_stateid
, &data
->res
.stateid
);
5486 set_bit(NFS_LOCK_INITIALIZED
, &data
->lsp
->ls_flags
);
5487 renew_lease(NFS_SERVER(data
->ctx
->dentry
->d_inode
), data
->timestamp
);
5490 dprintk("%s: done, ret = %d!\n", __func__
, data
->rpc_status
);
5493 static void nfs4_lock_release(void *calldata
)
5495 struct nfs4_lockdata
*data
= calldata
;
5497 dprintk("%s: begin!\n", __func__
);
5498 nfs_free_seqid(data
->arg
.open_seqid
);
5499 if (data
->cancelled
!= 0) {
5500 struct rpc_task
*task
;
5501 task
= nfs4_do_unlck(&data
->fl
, data
->ctx
, data
->lsp
,
5502 data
->arg
.lock_seqid
);
5504 rpc_put_task_async(task
);
5505 dprintk("%s: cancelling lock!\n", __func__
);
5507 nfs_free_seqid(data
->arg
.lock_seqid
);
5508 nfs4_put_lock_state(data
->lsp
);
5509 put_nfs_open_context(data
->ctx
);
5511 dprintk("%s: done!\n", __func__
);
5514 static const struct rpc_call_ops nfs4_lock_ops
= {
5515 .rpc_call_prepare
= nfs4_lock_prepare
,
5516 .rpc_call_done
= nfs4_lock_done
,
5517 .rpc_release
= nfs4_lock_release
,
5520 static void nfs4_handle_setlk_error(struct nfs_server
*server
, struct nfs4_lock_state
*lsp
, int new_lock_owner
, int error
)
5523 case -NFS4ERR_ADMIN_REVOKED
:
5524 case -NFS4ERR_BAD_STATEID
:
5525 lsp
->ls_seqid
.flags
&= ~NFS_SEQID_CONFIRMED
;
5526 if (new_lock_owner
!= 0 ||
5527 test_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
) != 0)
5528 nfs4_schedule_stateid_recovery(server
, lsp
->ls_state
);
5530 case -NFS4ERR_STALE_STATEID
:
5531 lsp
->ls_seqid
.flags
&= ~NFS_SEQID_CONFIRMED
;
5532 case -NFS4ERR_EXPIRED
:
5533 nfs4_schedule_lease_recovery(server
->nfs_client
);
5537 static int _nfs4_do_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*fl
, int recovery_type
)
5539 struct nfs4_lockdata
*data
;
5540 struct rpc_task
*task
;
5541 struct rpc_message msg
= {
5542 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCK
],
5543 .rpc_cred
= state
->owner
->so_cred
,
5545 struct rpc_task_setup task_setup_data
= {
5546 .rpc_client
= NFS_CLIENT(state
->inode
),
5547 .rpc_message
= &msg
,
5548 .callback_ops
= &nfs4_lock_ops
,
5549 .workqueue
= nfsiod_workqueue
,
5550 .flags
= RPC_TASK_ASYNC
,
5554 dprintk("%s: begin!\n", __func__
);
5555 data
= nfs4_alloc_lockdata(fl
, nfs_file_open_context(fl
->fl_file
),
5556 fl
->fl_u
.nfs4_fl
.owner
,
5557 recovery_type
== NFS_LOCK_NEW
? GFP_KERNEL
: GFP_NOFS
);
5561 data
->arg
.block
= 1;
5562 nfs4_init_sequence(&data
->arg
.seq_args
, &data
->res
.seq_res
, 1);
5563 msg
.rpc_argp
= &data
->arg
;
5564 msg
.rpc_resp
= &data
->res
;
5565 task_setup_data
.callback_data
= data
;
5566 if (recovery_type
> NFS_LOCK_NEW
) {
5567 if (recovery_type
== NFS_LOCK_RECLAIM
)
5568 data
->arg
.reclaim
= NFS_LOCK_RECLAIM
;
5569 nfs4_set_sequence_privileged(&data
->arg
.seq_args
);
5571 task
= rpc_run_task(&task_setup_data
);
5573 return PTR_ERR(task
);
5574 ret
= nfs4_wait_for_completion_rpc_task(task
);
5576 ret
= data
->rpc_status
;
5578 nfs4_handle_setlk_error(data
->server
, data
->lsp
,
5579 data
->arg
.new_lock_owner
, ret
);
5581 data
->cancelled
= 1;
5583 dprintk("%s: done, ret = %d!\n", __func__
, ret
);
5587 static int nfs4_lock_reclaim(struct nfs4_state
*state
, struct file_lock
*request
)
5589 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
5590 struct nfs4_exception exception
= {
5591 .inode
= state
->inode
,
5596 /* Cache the lock if possible... */
5597 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) != 0)
5599 err
= _nfs4_do_setlk(state
, F_SETLK
, request
, NFS_LOCK_RECLAIM
);
5600 trace_nfs4_lock_reclaim(request
, state
, F_SETLK
, err
);
5601 if (err
!= -NFS4ERR_DELAY
)
5603 nfs4_handle_exception(server
, err
, &exception
);
5604 } while (exception
.retry
);
5608 static int nfs4_lock_expired(struct nfs4_state
*state
, struct file_lock
*request
)
5610 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
5611 struct nfs4_exception exception
= {
5612 .inode
= state
->inode
,
5616 err
= nfs4_set_lock_state(state
, request
);
5619 if (!recover_lost_locks
) {
5620 set_bit(NFS_LOCK_LOST
, &request
->fl_u
.nfs4_fl
.owner
->ls_flags
);
5624 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) != 0)
5626 err
= _nfs4_do_setlk(state
, F_SETLK
, request
, NFS_LOCK_EXPIRED
);
5627 trace_nfs4_lock_expired(request
, state
, F_SETLK
, err
);
5631 case -NFS4ERR_GRACE
:
5632 case -NFS4ERR_DELAY
:
5633 nfs4_handle_exception(server
, err
, &exception
);
5636 } while (exception
.retry
);
5641 #if defined(CONFIG_NFS_V4_1)
5643 * nfs41_check_expired_locks - possibly free a lock stateid
5645 * @state: NFSv4 state for an inode
5647 * Returns NFS_OK if recovery for this stateid is now finished.
5648 * Otherwise a negative NFS4ERR value is returned.
5650 static int nfs41_check_expired_locks(struct nfs4_state
*state
)
5652 int status
, ret
= -NFS4ERR_BAD_STATEID
;
5653 struct nfs4_lock_state
*lsp
;
5654 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
5656 list_for_each_entry(lsp
, &state
->lock_states
, ls_locks
) {
5657 if (test_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
)) {
5658 struct rpc_cred
*cred
= lsp
->ls_state
->owner
->so_cred
;
5660 status
= nfs41_test_stateid(server
,
5663 trace_nfs4_test_lock_stateid(state
, lsp
, status
);
5664 if (status
!= NFS_OK
) {
5665 /* Free the stateid unless the server
5666 * informs us the stateid is unrecognized. */
5667 if (status
!= -NFS4ERR_BAD_STATEID
)
5668 nfs41_free_stateid(server
,
5671 clear_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
);
5680 static int nfs41_lock_expired(struct nfs4_state
*state
, struct file_lock
*request
)
5682 int status
= NFS_OK
;
5684 if (test_bit(LK_STATE_IN_USE
, &state
->flags
))
5685 status
= nfs41_check_expired_locks(state
);
5686 if (status
!= NFS_OK
)
5687 status
= nfs4_lock_expired(state
, request
);
5692 static int _nfs4_proc_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
5694 struct nfs4_state_owner
*sp
= state
->owner
;
5695 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
5696 unsigned char fl_flags
= request
->fl_flags
;
5698 int status
= -ENOLCK
;
5700 if ((fl_flags
& FL_POSIX
) &&
5701 !test_bit(NFS_STATE_POSIX_LOCKS
, &state
->flags
))
5703 /* Is this a delegated open? */
5704 status
= nfs4_set_lock_state(state
, request
);
5707 request
->fl_flags
|= FL_ACCESS
;
5708 status
= do_vfs_lock(request
->fl_file
, request
);
5711 down_read(&nfsi
->rwsem
);
5712 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
)) {
5713 /* Yes: cache locks! */
5714 /* ...but avoid races with delegation recall... */
5715 request
->fl_flags
= fl_flags
& ~FL_SLEEP
;
5716 status
= do_vfs_lock(request
->fl_file
, request
);
5719 seq
= raw_seqcount_begin(&sp
->so_reclaim_seqcount
);
5720 up_read(&nfsi
->rwsem
);
5721 status
= _nfs4_do_setlk(state
, cmd
, request
, NFS_LOCK_NEW
);
5724 down_read(&nfsi
->rwsem
);
5725 if (read_seqcount_retry(&sp
->so_reclaim_seqcount
, seq
)) {
5726 status
= -NFS4ERR_DELAY
;
5729 /* Note: we always want to sleep here! */
5730 request
->fl_flags
= fl_flags
| FL_SLEEP
;
5731 if (do_vfs_lock(request
->fl_file
, request
) < 0)
5732 printk(KERN_WARNING
"NFS: %s: VFS is out of sync with lock "
5733 "manager!\n", __func__
);
5735 up_read(&nfsi
->rwsem
);
5737 request
->fl_flags
= fl_flags
;
5741 static int nfs4_proc_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
5743 struct nfs4_exception exception
= {
5745 .inode
= state
->inode
,
5750 err
= _nfs4_proc_setlk(state
, cmd
, request
);
5751 trace_nfs4_set_lock(request
, state
, cmd
, err
);
5752 if (err
== -NFS4ERR_DENIED
)
5754 err
= nfs4_handle_exception(NFS_SERVER(state
->inode
),
5756 } while (exception
.retry
);
5761 nfs4_proc_lock(struct file
*filp
, int cmd
, struct file_lock
*request
)
5763 struct nfs_open_context
*ctx
;
5764 struct nfs4_state
*state
;
5765 unsigned long timeout
= NFS4_LOCK_MINTIMEOUT
;
5768 /* verify open state */
5769 ctx
= nfs_file_open_context(filp
);
5772 if (request
->fl_start
< 0 || request
->fl_end
< 0)
5775 if (IS_GETLK(cmd
)) {
5777 return nfs4_proc_getlk(state
, F_GETLK
, request
);
5781 if (!(IS_SETLK(cmd
) || IS_SETLKW(cmd
)))
5784 if (request
->fl_type
== F_UNLCK
) {
5786 return nfs4_proc_unlck(state
, cmd
, request
);
5793 * Don't rely on the VFS having checked the file open mode,
5794 * since it won't do this for flock() locks.
5796 switch (request
->fl_type
) {
5798 if (!(filp
->f_mode
& FMODE_READ
))
5802 if (!(filp
->f_mode
& FMODE_WRITE
))
5807 status
= nfs4_proc_setlk(state
, cmd
, request
);
5808 if ((status
!= -EAGAIN
) || IS_SETLK(cmd
))
5810 timeout
= nfs4_set_lock_task_retry(timeout
);
5811 status
= -ERESTARTSYS
;
5814 } while(status
< 0);
5818 int nfs4_lock_delegation_recall(struct file_lock
*fl
, struct nfs4_state
*state
, const nfs4_stateid
*stateid
)
5820 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
5823 err
= nfs4_set_lock_state(state
, fl
);
5826 err
= _nfs4_do_setlk(state
, F_SETLK
, fl
, NFS_LOCK_NEW
);
5827 return nfs4_handle_delegation_recall_error(server
, state
, stateid
, err
);
5830 struct nfs_release_lockowner_data
{
5831 struct nfs4_lock_state
*lsp
;
5832 struct nfs_server
*server
;
5833 struct nfs_release_lockowner_args args
;
5834 struct nfs4_sequence_args seq_args
;
5835 struct nfs4_sequence_res seq_res
;
5836 unsigned long timestamp
;
5839 static void nfs4_release_lockowner_prepare(struct rpc_task
*task
, void *calldata
)
5841 struct nfs_release_lockowner_data
*data
= calldata
;
5842 nfs40_setup_sequence(data
->server
,
5843 &data
->seq_args
, &data
->seq_res
, task
);
5844 data
->timestamp
= jiffies
;
5847 static void nfs4_release_lockowner_done(struct rpc_task
*task
, void *calldata
)
5849 struct nfs_release_lockowner_data
*data
= calldata
;
5850 struct nfs_server
*server
= data
->server
;
5852 nfs40_sequence_done(task
, &data
->seq_res
);
5854 switch (task
->tk_status
) {
5856 renew_lease(server
, data
->timestamp
);
5858 case -NFS4ERR_STALE_CLIENTID
:
5859 case -NFS4ERR_EXPIRED
:
5860 case -NFS4ERR_LEASE_MOVED
:
5861 case -NFS4ERR_DELAY
:
5862 if (nfs4_async_handle_error(task
, server
, NULL
) == -EAGAIN
)
5863 rpc_restart_call_prepare(task
);
5867 static void nfs4_release_lockowner_release(void *calldata
)
5869 struct nfs_release_lockowner_data
*data
= calldata
;
5870 nfs4_free_lock_state(data
->server
, data
->lsp
);
5874 static const struct rpc_call_ops nfs4_release_lockowner_ops
= {
5875 .rpc_call_prepare
= nfs4_release_lockowner_prepare
,
5876 .rpc_call_done
= nfs4_release_lockowner_done
,
5877 .rpc_release
= nfs4_release_lockowner_release
,
5880 static int nfs4_release_lockowner(struct nfs_server
*server
, struct nfs4_lock_state
*lsp
)
5882 struct nfs_release_lockowner_data
*data
;
5883 struct rpc_message msg
= {
5884 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RELEASE_LOCKOWNER
],
5887 if (server
->nfs_client
->cl_mvops
->minor_version
!= 0)
5890 data
= kmalloc(sizeof(*data
), GFP_NOFS
);
5893 nfs4_init_sequence(&data
->seq_args
, &data
->seq_res
, 0);
5895 data
->server
= server
;
5896 data
->args
.lock_owner
.clientid
= server
->nfs_client
->cl_clientid
;
5897 data
->args
.lock_owner
.id
= lsp
->ls_seqid
.owner_id
;
5898 data
->args
.lock_owner
.s_dev
= server
->s_dev
;
5900 msg
.rpc_argp
= &data
->args
;
5901 rpc_call_async(server
->client
, &msg
, 0, &nfs4_release_lockowner_ops
, data
);
5905 #define XATTR_NAME_NFSV4_ACL "system.nfs4_acl"
5907 static int nfs4_xattr_set_nfs4_acl(struct dentry
*dentry
, const char *key
,
5908 const void *buf
, size_t buflen
,
5909 int flags
, int type
)
5911 if (strcmp(key
, "") != 0)
5914 return nfs4_proc_set_acl(dentry
->d_inode
, buf
, buflen
);
5917 static int nfs4_xattr_get_nfs4_acl(struct dentry
*dentry
, const char *key
,
5918 void *buf
, size_t buflen
, int type
)
5920 if (strcmp(key
, "") != 0)
5923 return nfs4_proc_get_acl(dentry
->d_inode
, buf
, buflen
);
5926 static size_t nfs4_xattr_list_nfs4_acl(struct dentry
*dentry
, char *list
,
5927 size_t list_len
, const char *name
,
5928 size_t name_len
, int type
)
5930 size_t len
= sizeof(XATTR_NAME_NFSV4_ACL
);
5932 if (!nfs4_server_supports_acls(NFS_SERVER(dentry
->d_inode
)))
5935 if (list
&& len
<= list_len
)
5936 memcpy(list
, XATTR_NAME_NFSV4_ACL
, len
);
5940 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
5941 static inline int nfs4_server_supports_labels(struct nfs_server
*server
)
5943 return server
->caps
& NFS_CAP_SECURITY_LABEL
;
5946 static int nfs4_xattr_set_nfs4_label(struct dentry
*dentry
, const char *key
,
5947 const void *buf
, size_t buflen
,
5948 int flags
, int type
)
5950 if (security_ismaclabel(key
))
5951 return nfs4_set_security_label(dentry
, buf
, buflen
);
5956 static int nfs4_xattr_get_nfs4_label(struct dentry
*dentry
, const char *key
,
5957 void *buf
, size_t buflen
, int type
)
5959 if (security_ismaclabel(key
))
5960 return nfs4_get_security_label(dentry
->d_inode
, buf
, buflen
);
5964 static size_t nfs4_xattr_list_nfs4_label(struct dentry
*dentry
, char *list
,
5965 size_t list_len
, const char *name
,
5966 size_t name_len
, int type
)
5970 if (nfs_server_capable(dentry
->d_inode
, NFS_CAP_SECURITY_LABEL
)) {
5971 len
= security_inode_listsecurity(dentry
->d_inode
, NULL
, 0);
5972 if (list
&& len
<= list_len
)
5973 security_inode_listsecurity(dentry
->d_inode
, list
, len
);
5978 static const struct xattr_handler nfs4_xattr_nfs4_label_handler
= {
5979 .prefix
= XATTR_SECURITY_PREFIX
,
5980 .list
= nfs4_xattr_list_nfs4_label
,
5981 .get
= nfs4_xattr_get_nfs4_label
,
5982 .set
= nfs4_xattr_set_nfs4_label
,
5988 * nfs_fhget will use either the mounted_on_fileid or the fileid
5990 static void nfs_fixup_referral_attributes(struct nfs_fattr
*fattr
)
5992 if (!(((fattr
->valid
& NFS_ATTR_FATTR_MOUNTED_ON_FILEID
) ||
5993 (fattr
->valid
& NFS_ATTR_FATTR_FILEID
)) &&
5994 (fattr
->valid
& NFS_ATTR_FATTR_FSID
) &&
5995 (fattr
->valid
& NFS_ATTR_FATTR_V4_LOCATIONS
)))
5998 fattr
->valid
|= NFS_ATTR_FATTR_TYPE
| NFS_ATTR_FATTR_MODE
|
5999 NFS_ATTR_FATTR_NLINK
| NFS_ATTR_FATTR_V4_REFERRAL
;
6000 fattr
->mode
= S_IFDIR
| S_IRUGO
| S_IXUGO
;
6004 static int _nfs4_proc_fs_locations(struct rpc_clnt
*client
, struct inode
*dir
,
6005 const struct qstr
*name
,
6006 struct nfs4_fs_locations
*fs_locations
,
6009 struct nfs_server
*server
= NFS_SERVER(dir
);
6011 [0] = FATTR4_WORD0_FSID
| FATTR4_WORD0_FS_LOCATIONS
,
6013 struct nfs4_fs_locations_arg args
= {
6014 .dir_fh
= NFS_FH(dir
),
6019 struct nfs4_fs_locations_res res
= {
6020 .fs_locations
= fs_locations
,
6022 struct rpc_message msg
= {
6023 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FS_LOCATIONS
],
6029 dprintk("%s: start\n", __func__
);
6031 /* Ask for the fileid of the absent filesystem if mounted_on_fileid
6032 * is not supported */
6033 if (NFS_SERVER(dir
)->attr_bitmask
[1] & FATTR4_WORD1_MOUNTED_ON_FILEID
)
6034 bitmask
[1] |= FATTR4_WORD1_MOUNTED_ON_FILEID
;
6036 bitmask
[0] |= FATTR4_WORD0_FILEID
;
6038 nfs_fattr_init(&fs_locations
->fattr
);
6039 fs_locations
->server
= server
;
6040 fs_locations
->nlocations
= 0;
6041 status
= nfs4_call_sync(client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
6042 dprintk("%s: returned status = %d\n", __func__
, status
);
6046 int nfs4_proc_fs_locations(struct rpc_clnt
*client
, struct inode
*dir
,
6047 const struct qstr
*name
,
6048 struct nfs4_fs_locations
*fs_locations
,
6051 struct nfs4_exception exception
= { };
6054 err
= _nfs4_proc_fs_locations(client
, dir
, name
,
6055 fs_locations
, page
);
6056 trace_nfs4_get_fs_locations(dir
, name
, err
);
6057 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
6059 } while (exception
.retry
);
6064 * This operation also signals the server that this client is
6065 * performing migration recovery. The server can stop returning
6066 * NFS4ERR_LEASE_MOVED to this client. A RENEW operation is
6067 * appended to this compound to identify the client ID which is
6068 * performing recovery.
6070 static int _nfs40_proc_get_locations(struct inode
*inode
,
6071 struct nfs4_fs_locations
*locations
,
6072 struct page
*page
, struct rpc_cred
*cred
)
6074 struct nfs_server
*server
= NFS_SERVER(inode
);
6075 struct rpc_clnt
*clnt
= server
->client
;
6077 [0] = FATTR4_WORD0_FSID
| FATTR4_WORD0_FS_LOCATIONS
,
6079 struct nfs4_fs_locations_arg args
= {
6080 .clientid
= server
->nfs_client
->cl_clientid
,
6081 .fh
= NFS_FH(inode
),
6084 .migration
= 1, /* skip LOOKUP */
6085 .renew
= 1, /* append RENEW */
6087 struct nfs4_fs_locations_res res
= {
6088 .fs_locations
= locations
,
6092 struct rpc_message msg
= {
6093 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FS_LOCATIONS
],
6098 unsigned long now
= jiffies
;
6101 nfs_fattr_init(&locations
->fattr
);
6102 locations
->server
= server
;
6103 locations
->nlocations
= 0;
6105 nfs4_init_sequence(&args
.seq_args
, &res
.seq_res
, 0);
6106 nfs4_set_sequence_privileged(&args
.seq_args
);
6107 status
= nfs4_call_sync_sequence(clnt
, server
, &msg
,
6108 &args
.seq_args
, &res
.seq_res
);
6112 renew_lease(server
, now
);
6116 #ifdef CONFIG_NFS_V4_1
6119 * This operation also signals the server that this client is
6120 * performing migration recovery. The server can stop asserting
6121 * SEQ4_STATUS_LEASE_MOVED for this client. The client ID
6122 * performing this operation is identified in the SEQUENCE
6123 * operation in this compound.
6125 * When the client supports GETATTR(fs_locations_info), it can
6126 * be plumbed in here.
6128 static int _nfs41_proc_get_locations(struct inode
*inode
,
6129 struct nfs4_fs_locations
*locations
,
6130 struct page
*page
, struct rpc_cred
*cred
)
6132 struct nfs_server
*server
= NFS_SERVER(inode
);
6133 struct rpc_clnt
*clnt
= server
->client
;
6135 [0] = FATTR4_WORD0_FSID
| FATTR4_WORD0_FS_LOCATIONS
,
6137 struct nfs4_fs_locations_arg args
= {
6138 .fh
= NFS_FH(inode
),
6141 .migration
= 1, /* skip LOOKUP */
6143 struct nfs4_fs_locations_res res
= {
6144 .fs_locations
= locations
,
6147 struct rpc_message msg
= {
6148 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FS_LOCATIONS
],
6155 nfs_fattr_init(&locations
->fattr
);
6156 locations
->server
= server
;
6157 locations
->nlocations
= 0;
6159 nfs4_init_sequence(&args
.seq_args
, &res
.seq_res
, 0);
6160 nfs4_set_sequence_privileged(&args
.seq_args
);
6161 status
= nfs4_call_sync_sequence(clnt
, server
, &msg
,
6162 &args
.seq_args
, &res
.seq_res
);
6163 if (status
== NFS4_OK
&&
6164 res
.seq_res
.sr_status_flags
& SEQ4_STATUS_LEASE_MOVED
)
6165 status
= -NFS4ERR_LEASE_MOVED
;
6169 #endif /* CONFIG_NFS_V4_1 */
6172 * nfs4_proc_get_locations - discover locations for a migrated FSID
6173 * @inode: inode on FSID that is migrating
6174 * @locations: result of query
6176 * @cred: credential to use for this operation
6178 * Returns NFS4_OK on success, a negative NFS4ERR status code if the
6179 * operation failed, or a negative errno if a local error occurred.
6181 * On success, "locations" is filled in, but if the server has
6182 * no locations information, NFS_ATTR_FATTR_V4_LOCATIONS is not
6185 * -NFS4ERR_LEASE_MOVED is returned if the server still has leases
6186 * from this client that require migration recovery.
6188 int nfs4_proc_get_locations(struct inode
*inode
,
6189 struct nfs4_fs_locations
*locations
,
6190 struct page
*page
, struct rpc_cred
*cred
)
6192 struct nfs_server
*server
= NFS_SERVER(inode
);
6193 struct nfs_client
*clp
= server
->nfs_client
;
6194 const struct nfs4_mig_recovery_ops
*ops
=
6195 clp
->cl_mvops
->mig_recovery_ops
;
6196 struct nfs4_exception exception
= { };
6199 dprintk("%s: FSID %llx:%llx on \"%s\"\n", __func__
,
6200 (unsigned long long)server
->fsid
.major
,
6201 (unsigned long long)server
->fsid
.minor
,
6203 nfs_display_fhandle(NFS_FH(inode
), __func__
);
6206 status
= ops
->get_locations(inode
, locations
, page
, cred
);
6207 if (status
!= -NFS4ERR_DELAY
)
6209 nfs4_handle_exception(server
, status
, &exception
);
6210 } while (exception
.retry
);
6215 * This operation also signals the server that this client is
6216 * performing "lease moved" recovery. The server can stop
6217 * returning NFS4ERR_LEASE_MOVED to this client. A RENEW operation
6218 * is appended to this compound to identify the client ID which is
6219 * performing recovery.
6221 static int _nfs40_proc_fsid_present(struct inode
*inode
, struct rpc_cred
*cred
)
6223 struct nfs_server
*server
= NFS_SERVER(inode
);
6224 struct nfs_client
*clp
= NFS_SERVER(inode
)->nfs_client
;
6225 struct rpc_clnt
*clnt
= server
->client
;
6226 struct nfs4_fsid_present_arg args
= {
6227 .fh
= NFS_FH(inode
),
6228 .clientid
= clp
->cl_clientid
,
6229 .renew
= 1, /* append RENEW */
6231 struct nfs4_fsid_present_res res
= {
6234 struct rpc_message msg
= {
6235 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FSID_PRESENT
],
6240 unsigned long now
= jiffies
;
6243 res
.fh
= nfs_alloc_fhandle();
6247 nfs4_init_sequence(&args
.seq_args
, &res
.seq_res
, 0);
6248 nfs4_set_sequence_privileged(&args
.seq_args
);
6249 status
= nfs4_call_sync_sequence(clnt
, server
, &msg
,
6250 &args
.seq_args
, &res
.seq_res
);
6251 nfs_free_fhandle(res
.fh
);
6255 do_renew_lease(clp
, now
);
6259 #ifdef CONFIG_NFS_V4_1
6262 * This operation also signals the server that this client is
6263 * performing "lease moved" recovery. The server can stop asserting
6264 * SEQ4_STATUS_LEASE_MOVED for this client. The client ID performing
6265 * this operation is identified in the SEQUENCE operation in this
6268 static int _nfs41_proc_fsid_present(struct inode
*inode
, struct rpc_cred
*cred
)
6270 struct nfs_server
*server
= NFS_SERVER(inode
);
6271 struct rpc_clnt
*clnt
= server
->client
;
6272 struct nfs4_fsid_present_arg args
= {
6273 .fh
= NFS_FH(inode
),
6275 struct nfs4_fsid_present_res res
= {
6277 struct rpc_message msg
= {
6278 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FSID_PRESENT
],
6285 res
.fh
= nfs_alloc_fhandle();
6289 nfs4_init_sequence(&args
.seq_args
, &res
.seq_res
, 0);
6290 nfs4_set_sequence_privileged(&args
.seq_args
);
6291 status
= nfs4_call_sync_sequence(clnt
, server
, &msg
,
6292 &args
.seq_args
, &res
.seq_res
);
6293 nfs_free_fhandle(res
.fh
);
6294 if (status
== NFS4_OK
&&
6295 res
.seq_res
.sr_status_flags
& SEQ4_STATUS_LEASE_MOVED
)
6296 status
= -NFS4ERR_LEASE_MOVED
;
6300 #endif /* CONFIG_NFS_V4_1 */
6303 * nfs4_proc_fsid_present - Is this FSID present or absent on server?
6304 * @inode: inode on FSID to check
6305 * @cred: credential to use for this operation
6307 * Server indicates whether the FSID is present, moved, or not
6308 * recognized. This operation is necessary to clear a LEASE_MOVED
6309 * condition for this client ID.
6311 * Returns NFS4_OK if the FSID is present on this server,
6312 * -NFS4ERR_MOVED if the FSID is no longer present, a negative
6313 * NFS4ERR code if some error occurred on the server, or a
6314 * negative errno if a local failure occurred.
6316 int nfs4_proc_fsid_present(struct inode
*inode
, struct rpc_cred
*cred
)
6318 struct nfs_server
*server
= NFS_SERVER(inode
);
6319 struct nfs_client
*clp
= server
->nfs_client
;
6320 const struct nfs4_mig_recovery_ops
*ops
=
6321 clp
->cl_mvops
->mig_recovery_ops
;
6322 struct nfs4_exception exception
= { };
6325 dprintk("%s: FSID %llx:%llx on \"%s\"\n", __func__
,
6326 (unsigned long long)server
->fsid
.major
,
6327 (unsigned long long)server
->fsid
.minor
,
6329 nfs_display_fhandle(NFS_FH(inode
), __func__
);
6332 status
= ops
->fsid_present(inode
, cred
);
6333 if (status
!= -NFS4ERR_DELAY
)
6335 nfs4_handle_exception(server
, status
, &exception
);
6336 } while (exception
.retry
);
6341 * If 'use_integrity' is true and the state managment nfs_client
6342 * cl_rpcclient is using krb5i/p, use the integrity protected cl_rpcclient
6343 * and the machine credential as per RFC3530bis and RFC5661 Security
6344 * Considerations sections. Otherwise, just use the user cred with the
6345 * filesystem's rpc_client.
6347 static int _nfs4_proc_secinfo(struct inode
*dir
, const struct qstr
*name
, struct nfs4_secinfo_flavors
*flavors
, bool use_integrity
)
6350 struct nfs4_secinfo_arg args
= {
6351 .dir_fh
= NFS_FH(dir
),
6354 struct nfs4_secinfo_res res
= {
6357 struct rpc_message msg
= {
6358 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SECINFO
],
6362 struct rpc_clnt
*clnt
= NFS_SERVER(dir
)->client
;
6363 struct rpc_cred
*cred
= NULL
;
6365 if (use_integrity
) {
6366 clnt
= NFS_SERVER(dir
)->nfs_client
->cl_rpcclient
;
6367 cred
= nfs4_get_clid_cred(NFS_SERVER(dir
)->nfs_client
);
6368 msg
.rpc_cred
= cred
;
6371 dprintk("NFS call secinfo %s\n", name
->name
);
6373 nfs4_state_protect(NFS_SERVER(dir
)->nfs_client
,
6374 NFS_SP4_MACH_CRED_SECINFO
, &clnt
, &msg
);
6376 status
= nfs4_call_sync(clnt
, NFS_SERVER(dir
), &msg
, &args
.seq_args
,
6378 dprintk("NFS reply secinfo: %d\n", status
);
6386 int nfs4_proc_secinfo(struct inode
*dir
, const struct qstr
*name
,
6387 struct nfs4_secinfo_flavors
*flavors
)
6389 struct nfs4_exception exception
= { };
6392 err
= -NFS4ERR_WRONGSEC
;
6394 /* try to use integrity protection with machine cred */
6395 if (_nfs4_is_integrity_protected(NFS_SERVER(dir
)->nfs_client
))
6396 err
= _nfs4_proc_secinfo(dir
, name
, flavors
, true);
6399 * if unable to use integrity protection, or SECINFO with
6400 * integrity protection returns NFS4ERR_WRONGSEC (which is
6401 * disallowed by spec, but exists in deployed servers) use
6402 * the current filesystem's rpc_client and the user cred.
6404 if (err
== -NFS4ERR_WRONGSEC
)
6405 err
= _nfs4_proc_secinfo(dir
, name
, flavors
, false);
6407 trace_nfs4_secinfo(dir
, name
, err
);
6408 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
6410 } while (exception
.retry
);
6414 #ifdef CONFIG_NFS_V4_1
6416 * Check the exchange flags returned by the server for invalid flags, having
6417 * both PNFS and NON_PNFS flags set, and not having one of NON_PNFS, PNFS, or
6420 static int nfs4_check_cl_exchange_flags(u32 flags
)
6422 if (flags
& ~EXCHGID4_FLAG_MASK_R
)
6424 if ((flags
& EXCHGID4_FLAG_USE_PNFS_MDS
) &&
6425 (flags
& EXCHGID4_FLAG_USE_NON_PNFS
))
6427 if (!(flags
& (EXCHGID4_FLAG_MASK_PNFS
)))
6431 return -NFS4ERR_INVAL
;
6435 nfs41_same_server_scope(struct nfs41_server_scope
*a
,
6436 struct nfs41_server_scope
*b
)
6438 if (a
->server_scope_sz
== b
->server_scope_sz
&&
6439 memcmp(a
->server_scope
, b
->server_scope
, a
->server_scope_sz
) == 0)
6446 * nfs4_proc_bind_conn_to_session()
6448 * The 4.1 client currently uses the same TCP connection for the
6449 * fore and backchannel.
6451 int nfs4_proc_bind_conn_to_session(struct nfs_client
*clp
, struct rpc_cred
*cred
)
6454 struct nfs41_bind_conn_to_session_res res
;
6455 struct rpc_message msg
= {
6457 &nfs4_procedures
[NFSPROC4_CLNT_BIND_CONN_TO_SESSION
],
6463 dprintk("--> %s\n", __func__
);
6465 res
.session
= kzalloc(sizeof(struct nfs4_session
), GFP_NOFS
);
6466 if (unlikely(res
.session
== NULL
)) {
6471 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
6472 trace_nfs4_bind_conn_to_session(clp
, status
);
6474 if (memcmp(res
.session
->sess_id
.data
,
6475 clp
->cl_session
->sess_id
.data
, NFS4_MAX_SESSIONID_LEN
)) {
6476 dprintk("NFS: %s: Session ID mismatch\n", __func__
);
6480 if (res
.dir
!= NFS4_CDFS4_BOTH
) {
6481 dprintk("NFS: %s: Unexpected direction from server\n",
6486 if (res
.use_conn_in_rdma_mode
) {
6487 dprintk("NFS: %s: Server returned RDMA mode = true\n",
6496 dprintk("<-- %s status= %d\n", __func__
, status
);
6501 * Minimum set of SP4_MACH_CRED operations from RFC 5661 in the enforce map
6502 * and operations we'd like to see to enable certain features in the allow map
6504 static const struct nfs41_state_protection nfs4_sp4_mach_cred_request
= {
6505 .how
= SP4_MACH_CRED
,
6506 .enforce
.u
.words
= {
6507 [1] = 1 << (OP_BIND_CONN_TO_SESSION
- 32) |
6508 1 << (OP_EXCHANGE_ID
- 32) |
6509 1 << (OP_CREATE_SESSION
- 32) |
6510 1 << (OP_DESTROY_SESSION
- 32) |
6511 1 << (OP_DESTROY_CLIENTID
- 32)
6514 [0] = 1 << (OP_CLOSE
) |
6517 [1] = 1 << (OP_SECINFO
- 32) |
6518 1 << (OP_SECINFO_NO_NAME
- 32) |
6519 1 << (OP_TEST_STATEID
- 32) |
6520 1 << (OP_FREE_STATEID
- 32) |
6521 1 << (OP_WRITE
- 32)
6526 * Select the state protection mode for client `clp' given the server results
6527 * from exchange_id in `sp'.
6529 * Returns 0 on success, negative errno otherwise.
6531 static int nfs4_sp4_select_mode(struct nfs_client
*clp
,
6532 struct nfs41_state_protection
*sp
)
6534 static const u32 supported_enforce
[NFS4_OP_MAP_NUM_WORDS
] = {
6535 [1] = 1 << (OP_BIND_CONN_TO_SESSION
- 32) |
6536 1 << (OP_EXCHANGE_ID
- 32) |
6537 1 << (OP_CREATE_SESSION
- 32) |
6538 1 << (OP_DESTROY_SESSION
- 32) |
6539 1 << (OP_DESTROY_CLIENTID
- 32)
6543 if (sp
->how
== SP4_MACH_CRED
) {
6544 /* Print state protect result */
6545 dfprintk(MOUNT
, "Server SP4_MACH_CRED support:\n");
6546 for (i
= 0; i
<= LAST_NFS4_OP
; i
++) {
6547 if (test_bit(i
, sp
->enforce
.u
.longs
))
6548 dfprintk(MOUNT
, " enforce op %d\n", i
);
6549 if (test_bit(i
, sp
->allow
.u
.longs
))
6550 dfprintk(MOUNT
, " allow op %d\n", i
);
6553 /* make sure nothing is on enforce list that isn't supported */
6554 for (i
= 0; i
< NFS4_OP_MAP_NUM_WORDS
; i
++) {
6555 if (sp
->enforce
.u
.words
[i
] & ~supported_enforce
[i
]) {
6556 dfprintk(MOUNT
, "sp4_mach_cred: disabled\n");
6562 * Minimal mode - state operations are allowed to use machine
6563 * credential. Note this already happens by default, so the
6564 * client doesn't have to do anything more than the negotiation.
6566 * NOTE: we don't care if EXCHANGE_ID is in the list -
6567 * we're already using the machine cred for exchange_id
6568 * and will never use a different cred.
6570 if (test_bit(OP_BIND_CONN_TO_SESSION
, sp
->enforce
.u
.longs
) &&
6571 test_bit(OP_CREATE_SESSION
, sp
->enforce
.u
.longs
) &&
6572 test_bit(OP_DESTROY_SESSION
, sp
->enforce
.u
.longs
) &&
6573 test_bit(OP_DESTROY_CLIENTID
, sp
->enforce
.u
.longs
)) {
6574 dfprintk(MOUNT
, "sp4_mach_cred:\n");
6575 dfprintk(MOUNT
, " minimal mode enabled\n");
6576 set_bit(NFS_SP4_MACH_CRED_MINIMAL
, &clp
->cl_sp4_flags
);
6578 dfprintk(MOUNT
, "sp4_mach_cred: disabled\n");
6582 if (test_bit(OP_CLOSE
, sp
->allow
.u
.longs
) &&
6583 test_bit(OP_LOCKU
, sp
->allow
.u
.longs
)) {
6584 dfprintk(MOUNT
, " cleanup mode enabled\n");
6585 set_bit(NFS_SP4_MACH_CRED_CLEANUP
, &clp
->cl_sp4_flags
);
6588 if (test_bit(OP_SECINFO
, sp
->allow
.u
.longs
) &&
6589 test_bit(OP_SECINFO_NO_NAME
, sp
->allow
.u
.longs
)) {
6590 dfprintk(MOUNT
, " secinfo mode enabled\n");
6591 set_bit(NFS_SP4_MACH_CRED_SECINFO
, &clp
->cl_sp4_flags
);
6594 if (test_bit(OP_TEST_STATEID
, sp
->allow
.u
.longs
) &&
6595 test_bit(OP_FREE_STATEID
, sp
->allow
.u
.longs
)) {
6596 dfprintk(MOUNT
, " stateid mode enabled\n");
6597 set_bit(NFS_SP4_MACH_CRED_STATEID
, &clp
->cl_sp4_flags
);
6600 if (test_bit(OP_WRITE
, sp
->allow
.u
.longs
)) {
6601 dfprintk(MOUNT
, " write mode enabled\n");
6602 set_bit(NFS_SP4_MACH_CRED_WRITE
, &clp
->cl_sp4_flags
);
6605 if (test_bit(OP_COMMIT
, sp
->allow
.u
.longs
)) {
6606 dfprintk(MOUNT
, " commit mode enabled\n");
6607 set_bit(NFS_SP4_MACH_CRED_COMMIT
, &clp
->cl_sp4_flags
);
6615 * _nfs4_proc_exchange_id()
6617 * Wrapper for EXCHANGE_ID operation.
6619 static int _nfs4_proc_exchange_id(struct nfs_client
*clp
, struct rpc_cred
*cred
,
6622 nfs4_verifier verifier
;
6623 struct nfs41_exchange_id_args args
= {
6624 .verifier
= &verifier
,
6626 #ifdef CONFIG_NFS_V4_1_MIGRATION
6627 .flags
= EXCHGID4_FLAG_SUPP_MOVED_REFER
|
6628 EXCHGID4_FLAG_BIND_PRINC_STATEID
|
6629 EXCHGID4_FLAG_SUPP_MOVED_MIGR
,
6631 .flags
= EXCHGID4_FLAG_SUPP_MOVED_REFER
|
6632 EXCHGID4_FLAG_BIND_PRINC_STATEID
,
6635 struct nfs41_exchange_id_res res
= {
6639 struct rpc_message msg
= {
6640 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_EXCHANGE_ID
],
6646 nfs4_init_boot_verifier(clp
, &verifier
);
6647 args
.id_len
= nfs4_init_uniform_client_string(clp
, args
.id
,
6649 dprintk("NFS call exchange_id auth=%s, '%.*s'\n",
6650 clp
->cl_rpcclient
->cl_auth
->au_ops
->au_name
,
6651 args
.id_len
, args
.id
);
6653 res
.server_owner
= kzalloc(sizeof(struct nfs41_server_owner
),
6655 if (unlikely(res
.server_owner
== NULL
)) {
6660 res
.server_scope
= kzalloc(sizeof(struct nfs41_server_scope
),
6662 if (unlikely(res
.server_scope
== NULL
)) {
6664 goto out_server_owner
;
6667 res
.impl_id
= kzalloc(sizeof(struct nfs41_impl_id
), GFP_NOFS
);
6668 if (unlikely(res
.impl_id
== NULL
)) {
6670 goto out_server_scope
;
6675 args
.state_protect
.how
= SP4_NONE
;
6679 args
.state_protect
= nfs4_sp4_mach_cred_request
;
6686 goto out_server_scope
;
6689 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
6690 trace_nfs4_exchange_id(clp
, status
);
6692 status
= nfs4_check_cl_exchange_flags(res
.flags
);
6695 status
= nfs4_sp4_select_mode(clp
, &res
.state_protect
);
6698 clp
->cl_clientid
= res
.clientid
;
6699 clp
->cl_exchange_flags
= (res
.flags
& ~EXCHGID4_FLAG_CONFIRMED_R
);
6700 if (!(res
.flags
& EXCHGID4_FLAG_CONFIRMED_R
))
6701 clp
->cl_seqid
= res
.seqid
;
6703 kfree(clp
->cl_serverowner
);
6704 clp
->cl_serverowner
= res
.server_owner
;
6705 res
.server_owner
= NULL
;
6707 /* use the most recent implementation id */
6708 kfree(clp
->cl_implid
);
6709 clp
->cl_implid
= res
.impl_id
;
6711 if (clp
->cl_serverscope
!= NULL
&&
6712 !nfs41_same_server_scope(clp
->cl_serverscope
,
6713 res
.server_scope
)) {
6714 dprintk("%s: server_scope mismatch detected\n",
6716 set_bit(NFS4CLNT_SERVER_SCOPE_MISMATCH
, &clp
->cl_state
);
6717 kfree(clp
->cl_serverscope
);
6718 clp
->cl_serverscope
= NULL
;
6721 if (clp
->cl_serverscope
== NULL
) {
6722 clp
->cl_serverscope
= res
.server_scope
;
6729 kfree(res
.server_owner
);
6731 kfree(res
.server_scope
);
6733 if (clp
->cl_implid
!= NULL
)
6734 dprintk("NFS reply exchange_id: Server Implementation ID: "
6735 "domain: %s, name: %s, date: %llu,%u\n",
6736 clp
->cl_implid
->domain
, clp
->cl_implid
->name
,
6737 clp
->cl_implid
->date
.seconds
,
6738 clp
->cl_implid
->date
.nseconds
);
6739 dprintk("NFS reply exchange_id: %d\n", status
);
6744 * nfs4_proc_exchange_id()
6746 * Returns zero, a negative errno, or a negative NFS4ERR status code.
6748 * Since the clientid has expired, all compounds using sessions
6749 * associated with the stale clientid will be returning
6750 * NFS4ERR_BADSESSION in the sequence operation, and will therefore
6751 * be in some phase of session reset.
6753 * Will attempt to negotiate SP4_MACH_CRED if krb5i / krb5p auth is used.
6755 int nfs4_proc_exchange_id(struct nfs_client
*clp
, struct rpc_cred
*cred
)
6757 rpc_authflavor_t authflavor
= clp
->cl_rpcclient
->cl_auth
->au_flavor
;
6760 /* try SP4_MACH_CRED if krb5i/p */
6761 if (authflavor
== RPC_AUTH_GSS_KRB5I
||
6762 authflavor
== RPC_AUTH_GSS_KRB5P
) {
6763 status
= _nfs4_proc_exchange_id(clp
, cred
, SP4_MACH_CRED
);
6769 return _nfs4_proc_exchange_id(clp
, cred
, SP4_NONE
);
6772 static int _nfs4_proc_destroy_clientid(struct nfs_client
*clp
,
6773 struct rpc_cred
*cred
)
6775 struct rpc_message msg
= {
6776 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DESTROY_CLIENTID
],
6782 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
6783 trace_nfs4_destroy_clientid(clp
, status
);
6785 dprintk("NFS: Got error %d from the server %s on "
6786 "DESTROY_CLIENTID.", status
, clp
->cl_hostname
);
6790 static int nfs4_proc_destroy_clientid(struct nfs_client
*clp
,
6791 struct rpc_cred
*cred
)
6796 for (loop
= NFS4_MAX_LOOP_ON_RECOVER
; loop
!= 0; loop
--) {
6797 ret
= _nfs4_proc_destroy_clientid(clp
, cred
);
6799 case -NFS4ERR_DELAY
:
6800 case -NFS4ERR_CLIENTID_BUSY
:
6810 int nfs4_destroy_clientid(struct nfs_client
*clp
)
6812 struct rpc_cred
*cred
;
6815 if (clp
->cl_mvops
->minor_version
< 1)
6817 if (clp
->cl_exchange_flags
== 0)
6819 if (clp
->cl_preserve_clid
)
6821 cred
= nfs4_get_clid_cred(clp
);
6822 ret
= nfs4_proc_destroy_clientid(clp
, cred
);
6827 case -NFS4ERR_STALE_CLIENTID
:
6828 clp
->cl_exchange_flags
= 0;
6834 struct nfs4_get_lease_time_data
{
6835 struct nfs4_get_lease_time_args
*args
;
6836 struct nfs4_get_lease_time_res
*res
;
6837 struct nfs_client
*clp
;
6840 static void nfs4_get_lease_time_prepare(struct rpc_task
*task
,
6843 struct nfs4_get_lease_time_data
*data
=
6844 (struct nfs4_get_lease_time_data
*)calldata
;
6846 dprintk("--> %s\n", __func__
);
6847 /* just setup sequence, do not trigger session recovery
6848 since we're invoked within one */
6849 nfs41_setup_sequence(data
->clp
->cl_session
,
6850 &data
->args
->la_seq_args
,
6851 &data
->res
->lr_seq_res
,
6853 dprintk("<-- %s\n", __func__
);
6857 * Called from nfs4_state_manager thread for session setup, so don't recover
6858 * from sequence operation or clientid errors.
6860 static void nfs4_get_lease_time_done(struct rpc_task
*task
, void *calldata
)
6862 struct nfs4_get_lease_time_data
*data
=
6863 (struct nfs4_get_lease_time_data
*)calldata
;
6865 dprintk("--> %s\n", __func__
);
6866 if (!nfs41_sequence_done(task
, &data
->res
->lr_seq_res
))
6868 switch (task
->tk_status
) {
6869 case -NFS4ERR_DELAY
:
6870 case -NFS4ERR_GRACE
:
6871 dprintk("%s Retry: tk_status %d\n", __func__
, task
->tk_status
);
6872 rpc_delay(task
, NFS4_POLL_RETRY_MIN
);
6873 task
->tk_status
= 0;
6875 case -NFS4ERR_RETRY_UNCACHED_REP
:
6876 rpc_restart_call_prepare(task
);
6879 dprintk("<-- %s\n", __func__
);
6882 static const struct rpc_call_ops nfs4_get_lease_time_ops
= {
6883 .rpc_call_prepare
= nfs4_get_lease_time_prepare
,
6884 .rpc_call_done
= nfs4_get_lease_time_done
,
6887 int nfs4_proc_get_lease_time(struct nfs_client
*clp
, struct nfs_fsinfo
*fsinfo
)
6889 struct rpc_task
*task
;
6890 struct nfs4_get_lease_time_args args
;
6891 struct nfs4_get_lease_time_res res
= {
6892 .lr_fsinfo
= fsinfo
,
6894 struct nfs4_get_lease_time_data data
= {
6899 struct rpc_message msg
= {
6900 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GET_LEASE_TIME
],
6904 struct rpc_task_setup task_setup
= {
6905 .rpc_client
= clp
->cl_rpcclient
,
6906 .rpc_message
= &msg
,
6907 .callback_ops
= &nfs4_get_lease_time_ops
,
6908 .callback_data
= &data
,
6909 .flags
= RPC_TASK_TIMEOUT
,
6913 nfs4_init_sequence(&args
.la_seq_args
, &res
.lr_seq_res
, 0);
6914 nfs4_set_sequence_privileged(&args
.la_seq_args
);
6915 dprintk("--> %s\n", __func__
);
6916 task
= rpc_run_task(&task_setup
);
6919 status
= PTR_ERR(task
);
6921 status
= task
->tk_status
;
6924 dprintk("<-- %s return %d\n", __func__
, status
);
6930 * Initialize the values to be used by the client in CREATE_SESSION
6931 * If nfs4_init_session set the fore channel request and response sizes,
6934 * Set the back channel max_resp_sz_cached to zero to force the client to
6935 * always set csa_cachethis to FALSE because the current implementation
6936 * of the back channel DRC only supports caching the CB_SEQUENCE operation.
6938 static void nfs4_init_channel_attrs(struct nfs41_create_session_args
*args
)
6940 unsigned int max_rqst_sz
, max_resp_sz
;
6942 max_rqst_sz
= NFS_MAX_FILE_IO_SIZE
+ nfs41_maxwrite_overhead
;
6943 max_resp_sz
= NFS_MAX_FILE_IO_SIZE
+ nfs41_maxread_overhead
;
6945 /* Fore channel attributes */
6946 args
->fc_attrs
.max_rqst_sz
= max_rqst_sz
;
6947 args
->fc_attrs
.max_resp_sz
= max_resp_sz
;
6948 args
->fc_attrs
.max_ops
= NFS4_MAX_OPS
;
6949 args
->fc_attrs
.max_reqs
= max_session_slots
;
6951 dprintk("%s: Fore Channel : max_rqst_sz=%u max_resp_sz=%u "
6952 "max_ops=%u max_reqs=%u\n",
6954 args
->fc_attrs
.max_rqst_sz
, args
->fc_attrs
.max_resp_sz
,
6955 args
->fc_attrs
.max_ops
, args
->fc_attrs
.max_reqs
);
6957 /* Back channel attributes */
6958 args
->bc_attrs
.max_rqst_sz
= PAGE_SIZE
;
6959 args
->bc_attrs
.max_resp_sz
= PAGE_SIZE
;
6960 args
->bc_attrs
.max_resp_sz_cached
= 0;
6961 args
->bc_attrs
.max_ops
= NFS4_MAX_BACK_CHANNEL_OPS
;
6962 args
->bc_attrs
.max_reqs
= 1;
6964 dprintk("%s: Back Channel : max_rqst_sz=%u max_resp_sz=%u "
6965 "max_resp_sz_cached=%u max_ops=%u max_reqs=%u\n",
6967 args
->bc_attrs
.max_rqst_sz
, args
->bc_attrs
.max_resp_sz
,
6968 args
->bc_attrs
.max_resp_sz_cached
, args
->bc_attrs
.max_ops
,
6969 args
->bc_attrs
.max_reqs
);
6972 static int nfs4_verify_fore_channel_attrs(struct nfs41_create_session_args
*args
, struct nfs4_session
*session
)
6974 struct nfs4_channel_attrs
*sent
= &args
->fc_attrs
;
6975 struct nfs4_channel_attrs
*rcvd
= &session
->fc_attrs
;
6977 if (rcvd
->max_resp_sz
> sent
->max_resp_sz
)
6980 * Our requested max_ops is the minimum we need; we're not
6981 * prepared to break up compounds into smaller pieces than that.
6982 * So, no point even trying to continue if the server won't
6985 if (rcvd
->max_ops
< sent
->max_ops
)
6987 if (rcvd
->max_reqs
== 0)
6989 if (rcvd
->max_reqs
> NFS4_MAX_SLOT_TABLE
)
6990 rcvd
->max_reqs
= NFS4_MAX_SLOT_TABLE
;
6994 static int nfs4_verify_back_channel_attrs(struct nfs41_create_session_args
*args
, struct nfs4_session
*session
)
6996 struct nfs4_channel_attrs
*sent
= &args
->bc_attrs
;
6997 struct nfs4_channel_attrs
*rcvd
= &session
->bc_attrs
;
6999 if (rcvd
->max_rqst_sz
> sent
->max_rqst_sz
)
7001 if (rcvd
->max_resp_sz
< sent
->max_resp_sz
)
7003 if (rcvd
->max_resp_sz_cached
> sent
->max_resp_sz_cached
)
7005 /* These would render the backchannel useless: */
7006 if (rcvd
->max_ops
!= sent
->max_ops
)
7008 if (rcvd
->max_reqs
!= sent
->max_reqs
)
7013 static int nfs4_verify_channel_attrs(struct nfs41_create_session_args
*args
,
7014 struct nfs4_session
*session
)
7018 ret
= nfs4_verify_fore_channel_attrs(args
, session
);
7021 return nfs4_verify_back_channel_attrs(args
, session
);
7024 static int _nfs4_proc_create_session(struct nfs_client
*clp
,
7025 struct rpc_cred
*cred
)
7027 struct nfs4_session
*session
= clp
->cl_session
;
7028 struct nfs41_create_session_args args
= {
7030 .cb_program
= NFS4_CALLBACK
,
7032 struct nfs41_create_session_res res
= {
7035 struct rpc_message msg
= {
7036 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CREATE_SESSION
],
7043 nfs4_init_channel_attrs(&args
);
7044 args
.flags
= (SESSION4_PERSIST
| SESSION4_BACK_CHAN
);
7046 status
= rpc_call_sync(session
->clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
7047 trace_nfs4_create_session(clp
, status
);
7050 /* Verify the session's negotiated channel_attrs values */
7051 status
= nfs4_verify_channel_attrs(&args
, session
);
7052 /* Increment the clientid slot sequence id */
7060 * Issues a CREATE_SESSION operation to the server.
7061 * It is the responsibility of the caller to verify the session is
7062 * expired before calling this routine.
7064 int nfs4_proc_create_session(struct nfs_client
*clp
, struct rpc_cred
*cred
)
7068 struct nfs4_session
*session
= clp
->cl_session
;
7070 dprintk("--> %s clp=%p session=%p\n", __func__
, clp
, session
);
7072 status
= _nfs4_proc_create_session(clp
, cred
);
7076 /* Init or reset the session slot tables */
7077 status
= nfs4_setup_session_slot_tables(session
);
7078 dprintk("slot table setup returned %d\n", status
);
7082 ptr
= (unsigned *)&session
->sess_id
.data
[0];
7083 dprintk("%s client>seqid %d sessionid %u:%u:%u:%u\n", __func__
,
7084 clp
->cl_seqid
, ptr
[0], ptr
[1], ptr
[2], ptr
[3]);
7086 dprintk("<-- %s\n", __func__
);
7091 * Issue the over-the-wire RPC DESTROY_SESSION.
7092 * The caller must serialize access to this routine.
7094 int nfs4_proc_destroy_session(struct nfs4_session
*session
,
7095 struct rpc_cred
*cred
)
7097 struct rpc_message msg
= {
7098 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DESTROY_SESSION
],
7099 .rpc_argp
= session
,
7104 dprintk("--> nfs4_proc_destroy_session\n");
7106 /* session is still being setup */
7107 if (session
->clp
->cl_cons_state
!= NFS_CS_READY
)
7110 status
= rpc_call_sync(session
->clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
7111 trace_nfs4_destroy_session(session
->clp
, status
);
7114 dprintk("NFS: Got error %d from the server on DESTROY_SESSION. "
7115 "Session has been destroyed regardless...\n", status
);
7117 dprintk("<-- nfs4_proc_destroy_session\n");
7122 * Renew the cl_session lease.
7124 struct nfs4_sequence_data
{
7125 struct nfs_client
*clp
;
7126 struct nfs4_sequence_args args
;
7127 struct nfs4_sequence_res res
;
7130 static void nfs41_sequence_release(void *data
)
7132 struct nfs4_sequence_data
*calldata
= data
;
7133 struct nfs_client
*clp
= calldata
->clp
;
7135 if (atomic_read(&clp
->cl_count
) > 1)
7136 nfs4_schedule_state_renewal(clp
);
7137 nfs_put_client(clp
);
7141 static int nfs41_sequence_handle_errors(struct rpc_task
*task
, struct nfs_client
*clp
)
7143 switch(task
->tk_status
) {
7144 case -NFS4ERR_DELAY
:
7145 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
7148 nfs4_schedule_lease_recovery(clp
);
7153 static void nfs41_sequence_call_done(struct rpc_task
*task
, void *data
)
7155 struct nfs4_sequence_data
*calldata
= data
;
7156 struct nfs_client
*clp
= calldata
->clp
;
7158 if (!nfs41_sequence_done(task
, task
->tk_msg
.rpc_resp
))
7161 trace_nfs4_sequence(clp
, task
->tk_status
);
7162 if (task
->tk_status
< 0) {
7163 dprintk("%s ERROR %d\n", __func__
, task
->tk_status
);
7164 if (atomic_read(&clp
->cl_count
) == 1)
7167 if (nfs41_sequence_handle_errors(task
, clp
) == -EAGAIN
) {
7168 rpc_restart_call_prepare(task
);
7172 dprintk("%s rpc_cred %p\n", __func__
, task
->tk_msg
.rpc_cred
);
7174 dprintk("<-- %s\n", __func__
);
7177 static void nfs41_sequence_prepare(struct rpc_task
*task
, void *data
)
7179 struct nfs4_sequence_data
*calldata
= data
;
7180 struct nfs_client
*clp
= calldata
->clp
;
7181 struct nfs4_sequence_args
*args
;
7182 struct nfs4_sequence_res
*res
;
7184 args
= task
->tk_msg
.rpc_argp
;
7185 res
= task
->tk_msg
.rpc_resp
;
7187 nfs41_setup_sequence(clp
->cl_session
, args
, res
, task
);
7190 static const struct rpc_call_ops nfs41_sequence_ops
= {
7191 .rpc_call_done
= nfs41_sequence_call_done
,
7192 .rpc_call_prepare
= nfs41_sequence_prepare
,
7193 .rpc_release
= nfs41_sequence_release
,
7196 static struct rpc_task
*_nfs41_proc_sequence(struct nfs_client
*clp
,
7197 struct rpc_cred
*cred
,
7200 struct nfs4_sequence_data
*calldata
;
7201 struct rpc_message msg
= {
7202 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SEQUENCE
],
7205 struct rpc_task_setup task_setup_data
= {
7206 .rpc_client
= clp
->cl_rpcclient
,
7207 .rpc_message
= &msg
,
7208 .callback_ops
= &nfs41_sequence_ops
,
7209 .flags
= RPC_TASK_ASYNC
| RPC_TASK_TIMEOUT
,
7212 if (!atomic_inc_not_zero(&clp
->cl_count
))
7213 return ERR_PTR(-EIO
);
7214 calldata
= kzalloc(sizeof(*calldata
), GFP_NOFS
);
7215 if (calldata
== NULL
) {
7216 nfs_put_client(clp
);
7217 return ERR_PTR(-ENOMEM
);
7219 nfs4_init_sequence(&calldata
->args
, &calldata
->res
, 0);
7221 nfs4_set_sequence_privileged(&calldata
->args
);
7222 msg
.rpc_argp
= &calldata
->args
;
7223 msg
.rpc_resp
= &calldata
->res
;
7224 calldata
->clp
= clp
;
7225 task_setup_data
.callback_data
= calldata
;
7227 return rpc_run_task(&task_setup_data
);
7230 static int nfs41_proc_async_sequence(struct nfs_client
*clp
, struct rpc_cred
*cred
, unsigned renew_flags
)
7232 struct rpc_task
*task
;
7235 if ((renew_flags
& NFS4_RENEW_TIMEOUT
) == 0)
7237 task
= _nfs41_proc_sequence(clp
, cred
, false);
7239 ret
= PTR_ERR(task
);
7241 rpc_put_task_async(task
);
7242 dprintk("<-- %s status=%d\n", __func__
, ret
);
7246 static int nfs4_proc_sequence(struct nfs_client
*clp
, struct rpc_cred
*cred
)
7248 struct rpc_task
*task
;
7251 task
= _nfs41_proc_sequence(clp
, cred
, true);
7253 ret
= PTR_ERR(task
);
7256 ret
= rpc_wait_for_completion_task(task
);
7258 struct nfs4_sequence_res
*res
= task
->tk_msg
.rpc_resp
;
7260 if (task
->tk_status
== 0)
7261 nfs41_handle_sequence_flag_errors(clp
, res
->sr_status_flags
);
7262 ret
= task
->tk_status
;
7266 dprintk("<-- %s status=%d\n", __func__
, ret
);
7270 struct nfs4_reclaim_complete_data
{
7271 struct nfs_client
*clp
;
7272 struct nfs41_reclaim_complete_args arg
;
7273 struct nfs41_reclaim_complete_res res
;
7276 static void nfs4_reclaim_complete_prepare(struct rpc_task
*task
, void *data
)
7278 struct nfs4_reclaim_complete_data
*calldata
= data
;
7280 nfs41_setup_sequence(calldata
->clp
->cl_session
,
7281 &calldata
->arg
.seq_args
,
7282 &calldata
->res
.seq_res
,
7286 static int nfs41_reclaim_complete_handle_errors(struct rpc_task
*task
, struct nfs_client
*clp
)
7288 switch(task
->tk_status
) {
7290 case -NFS4ERR_COMPLETE_ALREADY
:
7291 case -NFS4ERR_WRONG_CRED
: /* What to do here? */
7293 case -NFS4ERR_DELAY
:
7294 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
7296 case -NFS4ERR_RETRY_UNCACHED_REP
:
7299 nfs4_schedule_lease_recovery(clp
);
7304 static void nfs4_reclaim_complete_done(struct rpc_task
*task
, void *data
)
7306 struct nfs4_reclaim_complete_data
*calldata
= data
;
7307 struct nfs_client
*clp
= calldata
->clp
;
7308 struct nfs4_sequence_res
*res
= &calldata
->res
.seq_res
;
7310 dprintk("--> %s\n", __func__
);
7311 if (!nfs41_sequence_done(task
, res
))
7314 trace_nfs4_reclaim_complete(clp
, task
->tk_status
);
7315 if (nfs41_reclaim_complete_handle_errors(task
, clp
) == -EAGAIN
) {
7316 rpc_restart_call_prepare(task
);
7319 dprintk("<-- %s\n", __func__
);
7322 static void nfs4_free_reclaim_complete_data(void *data
)
7324 struct nfs4_reclaim_complete_data
*calldata
= data
;
7329 static const struct rpc_call_ops nfs4_reclaim_complete_call_ops
= {
7330 .rpc_call_prepare
= nfs4_reclaim_complete_prepare
,
7331 .rpc_call_done
= nfs4_reclaim_complete_done
,
7332 .rpc_release
= nfs4_free_reclaim_complete_data
,
7336 * Issue a global reclaim complete.
7338 static int nfs41_proc_reclaim_complete(struct nfs_client
*clp
,
7339 struct rpc_cred
*cred
)
7341 struct nfs4_reclaim_complete_data
*calldata
;
7342 struct rpc_task
*task
;
7343 struct rpc_message msg
= {
7344 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RECLAIM_COMPLETE
],
7347 struct rpc_task_setup task_setup_data
= {
7348 .rpc_client
= clp
->cl_rpcclient
,
7349 .rpc_message
= &msg
,
7350 .callback_ops
= &nfs4_reclaim_complete_call_ops
,
7351 .flags
= RPC_TASK_ASYNC
,
7353 int status
= -ENOMEM
;
7355 dprintk("--> %s\n", __func__
);
7356 calldata
= kzalloc(sizeof(*calldata
), GFP_NOFS
);
7357 if (calldata
== NULL
)
7359 calldata
->clp
= clp
;
7360 calldata
->arg
.one_fs
= 0;
7362 nfs4_init_sequence(&calldata
->arg
.seq_args
, &calldata
->res
.seq_res
, 0);
7363 nfs4_set_sequence_privileged(&calldata
->arg
.seq_args
);
7364 msg
.rpc_argp
= &calldata
->arg
;
7365 msg
.rpc_resp
= &calldata
->res
;
7366 task_setup_data
.callback_data
= calldata
;
7367 task
= rpc_run_task(&task_setup_data
);
7369 status
= PTR_ERR(task
);
7372 status
= nfs4_wait_for_completion_rpc_task(task
);
7374 status
= task
->tk_status
;
7378 dprintk("<-- %s status=%d\n", __func__
, status
);
7383 nfs4_layoutget_prepare(struct rpc_task
*task
, void *calldata
)
7385 struct nfs4_layoutget
*lgp
= calldata
;
7386 struct nfs_server
*server
= NFS_SERVER(lgp
->args
.inode
);
7387 struct nfs4_session
*session
= nfs4_get_session(server
);
7389 dprintk("--> %s\n", __func__
);
7390 /* Note the is a race here, where a CB_LAYOUTRECALL can come in
7391 * right now covering the LAYOUTGET we are about to send.
7392 * However, that is not so catastrophic, and there seems
7393 * to be no way to prevent it completely.
7395 if (nfs41_setup_sequence(session
, &lgp
->args
.seq_args
,
7396 &lgp
->res
.seq_res
, task
))
7398 if (pnfs_choose_layoutget_stateid(&lgp
->args
.stateid
,
7399 NFS_I(lgp
->args
.inode
)->layout
,
7400 lgp
->args
.ctx
->state
)) {
7401 rpc_exit(task
, NFS4_OK
);
7405 static void nfs4_layoutget_done(struct rpc_task
*task
, void *calldata
)
7407 struct nfs4_layoutget
*lgp
= calldata
;
7408 struct inode
*inode
= lgp
->args
.inode
;
7409 struct nfs_server
*server
= NFS_SERVER(inode
);
7410 struct pnfs_layout_hdr
*lo
;
7411 struct nfs4_state
*state
= NULL
;
7412 unsigned long timeo
, giveup
;
7414 dprintk("--> %s\n", __func__
);
7416 if (!nfs41_sequence_done(task
, &lgp
->res
.seq_res
))
7419 switch (task
->tk_status
) {
7422 case -NFS4ERR_LAYOUTTRYLATER
:
7423 case -NFS4ERR_RECALLCONFLICT
:
7424 timeo
= rpc_get_timeout(task
->tk_client
);
7425 giveup
= lgp
->args
.timestamp
+ timeo
;
7426 if (time_after(giveup
, jiffies
))
7427 task
->tk_status
= -NFS4ERR_DELAY
;
7429 case -NFS4ERR_EXPIRED
:
7430 case -NFS4ERR_BAD_STATEID
:
7431 spin_lock(&inode
->i_lock
);
7432 lo
= NFS_I(inode
)->layout
;
7433 if (!lo
|| list_empty(&lo
->plh_segs
)) {
7434 spin_unlock(&inode
->i_lock
);
7435 /* If the open stateid was bad, then recover it. */
7436 state
= lgp
->args
.ctx
->state
;
7440 pnfs_mark_matching_lsegs_invalid(lo
, &head
, NULL
);
7441 spin_unlock(&inode
->i_lock
);
7442 /* Mark the bad layout state as invalid, then
7443 * retry using the open stateid. */
7444 pnfs_free_lseg_list(&head
);
7447 if (nfs4_async_handle_error(task
, server
, state
) == -EAGAIN
)
7448 rpc_restart_call_prepare(task
);
7450 dprintk("<-- %s\n", __func__
);
7453 static size_t max_response_pages(struct nfs_server
*server
)
7455 u32 max_resp_sz
= server
->nfs_client
->cl_session
->fc_attrs
.max_resp_sz
;
7456 return nfs_page_array_len(0, max_resp_sz
);
7459 static void nfs4_free_pages(struct page
**pages
, size_t size
)
7466 for (i
= 0; i
< size
; i
++) {
7469 __free_page(pages
[i
]);
7474 static struct page
**nfs4_alloc_pages(size_t size
, gfp_t gfp_flags
)
7476 struct page
**pages
;
7479 pages
= kcalloc(size
, sizeof(struct page
*), gfp_flags
);
7481 dprintk("%s: can't alloc array of %zu pages\n", __func__
, size
);
7485 for (i
= 0; i
< size
; i
++) {
7486 pages
[i
] = alloc_page(gfp_flags
);
7488 dprintk("%s: failed to allocate page\n", __func__
);
7489 nfs4_free_pages(pages
, size
);
7497 static void nfs4_layoutget_release(void *calldata
)
7499 struct nfs4_layoutget
*lgp
= calldata
;
7500 struct inode
*inode
= lgp
->args
.inode
;
7501 struct nfs_server
*server
= NFS_SERVER(inode
);
7502 size_t max_pages
= max_response_pages(server
);
7504 dprintk("--> %s\n", __func__
);
7505 nfs4_free_pages(lgp
->args
.layout
.pages
, max_pages
);
7506 pnfs_put_layout_hdr(NFS_I(inode
)->layout
);
7507 put_nfs_open_context(lgp
->args
.ctx
);
7509 dprintk("<-- %s\n", __func__
);
7512 static const struct rpc_call_ops nfs4_layoutget_call_ops
= {
7513 .rpc_call_prepare
= nfs4_layoutget_prepare
,
7514 .rpc_call_done
= nfs4_layoutget_done
,
7515 .rpc_release
= nfs4_layoutget_release
,
7518 struct pnfs_layout_segment
*
7519 nfs4_proc_layoutget(struct nfs4_layoutget
*lgp
, gfp_t gfp_flags
)
7521 struct inode
*inode
= lgp
->args
.inode
;
7522 struct nfs_server
*server
= NFS_SERVER(inode
);
7523 size_t max_pages
= max_response_pages(server
);
7524 struct rpc_task
*task
;
7525 struct rpc_message msg
= {
7526 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LAYOUTGET
],
7527 .rpc_argp
= &lgp
->args
,
7528 .rpc_resp
= &lgp
->res
,
7529 .rpc_cred
= lgp
->cred
,
7531 struct rpc_task_setup task_setup_data
= {
7532 .rpc_client
= server
->client
,
7533 .rpc_message
= &msg
,
7534 .callback_ops
= &nfs4_layoutget_call_ops
,
7535 .callback_data
= lgp
,
7536 .flags
= RPC_TASK_ASYNC
,
7538 struct pnfs_layout_segment
*lseg
= NULL
;
7541 dprintk("--> %s\n", __func__
);
7543 lgp
->args
.layout
.pages
= nfs4_alloc_pages(max_pages
, gfp_flags
);
7544 if (!lgp
->args
.layout
.pages
) {
7545 nfs4_layoutget_release(lgp
);
7546 return ERR_PTR(-ENOMEM
);
7548 lgp
->args
.layout
.pglen
= max_pages
* PAGE_SIZE
;
7549 lgp
->args
.timestamp
= jiffies
;
7551 lgp
->res
.layoutp
= &lgp
->args
.layout
;
7552 lgp
->res
.seq_res
.sr_slot
= NULL
;
7553 nfs4_init_sequence(&lgp
->args
.seq_args
, &lgp
->res
.seq_res
, 0);
7555 /* nfs4_layoutget_release calls pnfs_put_layout_hdr */
7556 pnfs_get_layout_hdr(NFS_I(inode
)->layout
);
7558 task
= rpc_run_task(&task_setup_data
);
7560 return ERR_CAST(task
);
7561 status
= nfs4_wait_for_completion_rpc_task(task
);
7563 status
= task
->tk_status
;
7564 trace_nfs4_layoutget(lgp
->args
.ctx
,
7568 /* if layoutp->len is 0, nfs4_layoutget_prepare called rpc_exit */
7569 if (status
== 0 && lgp
->res
.layoutp
->len
)
7570 lseg
= pnfs_layout_process(lgp
);
7572 dprintk("<-- %s status=%d\n", __func__
, status
);
7574 return ERR_PTR(status
);
7579 nfs4_layoutreturn_prepare(struct rpc_task
*task
, void *calldata
)
7581 struct nfs4_layoutreturn
*lrp
= calldata
;
7583 dprintk("--> %s\n", __func__
);
7584 nfs41_setup_sequence(lrp
->clp
->cl_session
,
7585 &lrp
->args
.seq_args
,
7590 static void nfs4_layoutreturn_done(struct rpc_task
*task
, void *calldata
)
7592 struct nfs4_layoutreturn
*lrp
= calldata
;
7593 struct nfs_server
*server
;
7595 dprintk("--> %s\n", __func__
);
7597 if (!nfs41_sequence_done(task
, &lrp
->res
.seq_res
))
7600 server
= NFS_SERVER(lrp
->args
.inode
);
7601 switch (task
->tk_status
) {
7603 task
->tk_status
= 0;
7606 case -NFS4ERR_DELAY
:
7607 if (nfs4_async_handle_error(task
, server
, NULL
) != -EAGAIN
)
7609 rpc_restart_call_prepare(task
);
7612 dprintk("<-- %s\n", __func__
);
7615 static void nfs4_layoutreturn_release(void *calldata
)
7617 struct nfs4_layoutreturn
*lrp
= calldata
;
7618 struct pnfs_layout_hdr
*lo
= lrp
->args
.layout
;
7620 dprintk("--> %s\n", __func__
);
7621 spin_lock(&lo
->plh_inode
->i_lock
);
7622 if (lrp
->res
.lrs_present
)
7623 pnfs_set_layout_stateid(lo
, &lrp
->res
.stateid
, true);
7624 lo
->plh_block_lgets
--;
7625 spin_unlock(&lo
->plh_inode
->i_lock
);
7626 pnfs_put_layout_hdr(lrp
->args
.layout
);
7628 dprintk("<-- %s\n", __func__
);
7631 static const struct rpc_call_ops nfs4_layoutreturn_call_ops
= {
7632 .rpc_call_prepare
= nfs4_layoutreturn_prepare
,
7633 .rpc_call_done
= nfs4_layoutreturn_done
,
7634 .rpc_release
= nfs4_layoutreturn_release
,
7637 int nfs4_proc_layoutreturn(struct nfs4_layoutreturn
*lrp
)
7639 struct rpc_task
*task
;
7640 struct rpc_message msg
= {
7641 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LAYOUTRETURN
],
7642 .rpc_argp
= &lrp
->args
,
7643 .rpc_resp
= &lrp
->res
,
7644 .rpc_cred
= lrp
->cred
,
7646 struct rpc_task_setup task_setup_data
= {
7647 .rpc_client
= NFS_SERVER(lrp
->args
.inode
)->client
,
7648 .rpc_message
= &msg
,
7649 .callback_ops
= &nfs4_layoutreturn_call_ops
,
7650 .callback_data
= lrp
,
7654 dprintk("--> %s\n", __func__
);
7655 nfs4_init_sequence(&lrp
->args
.seq_args
, &lrp
->res
.seq_res
, 1);
7656 task
= rpc_run_task(&task_setup_data
);
7658 return PTR_ERR(task
);
7659 status
= task
->tk_status
;
7660 trace_nfs4_layoutreturn(lrp
->args
.inode
, status
);
7661 dprintk("<-- %s status=%d\n", __func__
, status
);
7667 * Retrieve the list of Data Server devices from the MDS.
7669 static int _nfs4_getdevicelist(struct nfs_server
*server
,
7670 const struct nfs_fh
*fh
,
7671 struct pnfs_devicelist
*devlist
)
7673 struct nfs4_getdevicelist_args args
= {
7675 .layoutclass
= server
->pnfs_curr_ld
->id
,
7677 struct nfs4_getdevicelist_res res
= {
7680 struct rpc_message msg
= {
7681 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETDEVICELIST
],
7687 dprintk("--> %s\n", __func__
);
7688 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
,
7690 dprintk("<-- %s status=%d\n", __func__
, status
);
7694 int nfs4_proc_getdevicelist(struct nfs_server
*server
,
7695 const struct nfs_fh
*fh
,
7696 struct pnfs_devicelist
*devlist
)
7698 struct nfs4_exception exception
= { };
7702 err
= nfs4_handle_exception(server
,
7703 _nfs4_getdevicelist(server
, fh
, devlist
),
7705 } while (exception
.retry
);
7707 dprintk("%s: err=%d, num_devs=%u\n", __func__
,
7708 err
, devlist
->num_devs
);
7712 EXPORT_SYMBOL_GPL(nfs4_proc_getdevicelist
);
7715 _nfs4_proc_getdeviceinfo(struct nfs_server
*server
,
7716 struct pnfs_device
*pdev
,
7717 struct rpc_cred
*cred
)
7719 struct nfs4_getdeviceinfo_args args
= {
7722 struct nfs4_getdeviceinfo_res res
= {
7725 struct rpc_message msg
= {
7726 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETDEVICEINFO
],
7733 dprintk("--> %s\n", __func__
);
7734 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
7735 dprintk("<-- %s status=%d\n", __func__
, status
);
7740 int nfs4_proc_getdeviceinfo(struct nfs_server
*server
,
7741 struct pnfs_device
*pdev
,
7742 struct rpc_cred
*cred
)
7744 struct nfs4_exception exception
= { };
7748 err
= nfs4_handle_exception(server
,
7749 _nfs4_proc_getdeviceinfo(server
, pdev
, cred
),
7751 } while (exception
.retry
);
7754 EXPORT_SYMBOL_GPL(nfs4_proc_getdeviceinfo
);
7756 static void nfs4_layoutcommit_prepare(struct rpc_task
*task
, void *calldata
)
7758 struct nfs4_layoutcommit_data
*data
= calldata
;
7759 struct nfs_server
*server
= NFS_SERVER(data
->args
.inode
);
7760 struct nfs4_session
*session
= nfs4_get_session(server
);
7762 nfs41_setup_sequence(session
,
7763 &data
->args
.seq_args
,
7769 nfs4_layoutcommit_done(struct rpc_task
*task
, void *calldata
)
7771 struct nfs4_layoutcommit_data
*data
= calldata
;
7772 struct nfs_server
*server
= NFS_SERVER(data
->args
.inode
);
7774 if (!nfs41_sequence_done(task
, &data
->res
.seq_res
))
7777 switch (task
->tk_status
) { /* Just ignore these failures */
7778 case -NFS4ERR_DELEG_REVOKED
: /* layout was recalled */
7779 case -NFS4ERR_BADIOMODE
: /* no IOMODE_RW layout for range */
7780 case -NFS4ERR_BADLAYOUT
: /* no layout */
7781 case -NFS4ERR_GRACE
: /* loca_recalim always false */
7782 task
->tk_status
= 0;
7785 nfs_post_op_update_inode_force_wcc(data
->args
.inode
,
7789 if (nfs4_async_handle_error(task
, server
, NULL
) == -EAGAIN
) {
7790 rpc_restart_call_prepare(task
);
7796 static void nfs4_layoutcommit_release(void *calldata
)
7798 struct nfs4_layoutcommit_data
*data
= calldata
;
7800 pnfs_cleanup_layoutcommit(data
);
7801 put_rpccred(data
->cred
);
7805 static const struct rpc_call_ops nfs4_layoutcommit_ops
= {
7806 .rpc_call_prepare
= nfs4_layoutcommit_prepare
,
7807 .rpc_call_done
= nfs4_layoutcommit_done
,
7808 .rpc_release
= nfs4_layoutcommit_release
,
7812 nfs4_proc_layoutcommit(struct nfs4_layoutcommit_data
*data
, bool sync
)
7814 struct rpc_message msg
= {
7815 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LAYOUTCOMMIT
],
7816 .rpc_argp
= &data
->args
,
7817 .rpc_resp
= &data
->res
,
7818 .rpc_cred
= data
->cred
,
7820 struct rpc_task_setup task_setup_data
= {
7821 .task
= &data
->task
,
7822 .rpc_client
= NFS_CLIENT(data
->args
.inode
),
7823 .rpc_message
= &msg
,
7824 .callback_ops
= &nfs4_layoutcommit_ops
,
7825 .callback_data
= data
,
7826 .flags
= RPC_TASK_ASYNC
,
7828 struct rpc_task
*task
;
7831 dprintk("NFS: %4d initiating layoutcommit call. sync %d "
7832 "lbw: %llu inode %lu\n",
7833 data
->task
.tk_pid
, sync
,
7834 data
->args
.lastbytewritten
,
7835 data
->args
.inode
->i_ino
);
7837 nfs4_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
7838 task
= rpc_run_task(&task_setup_data
);
7840 return PTR_ERR(task
);
7843 status
= nfs4_wait_for_completion_rpc_task(task
);
7846 status
= task
->tk_status
;
7847 trace_nfs4_layoutcommit(data
->args
.inode
, status
);
7849 dprintk("%s: status %d\n", __func__
, status
);
7855 * Use the state managment nfs_client cl_rpcclient, which uses krb5i (if
7856 * possible) as per RFC3530bis and RFC5661 Security Considerations sections
7859 _nfs41_proc_secinfo_no_name(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
7860 struct nfs_fsinfo
*info
,
7861 struct nfs4_secinfo_flavors
*flavors
, bool use_integrity
)
7863 struct nfs41_secinfo_no_name_args args
= {
7864 .style
= SECINFO_STYLE_CURRENT_FH
,
7866 struct nfs4_secinfo_res res
= {
7869 struct rpc_message msg
= {
7870 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SECINFO_NO_NAME
],
7874 struct rpc_clnt
*clnt
= server
->client
;
7875 struct rpc_cred
*cred
= NULL
;
7878 if (use_integrity
) {
7879 clnt
= server
->nfs_client
->cl_rpcclient
;
7880 cred
= nfs4_get_clid_cred(server
->nfs_client
);
7881 msg
.rpc_cred
= cred
;
7884 dprintk("--> %s\n", __func__
);
7885 status
= nfs4_call_sync(clnt
, server
, &msg
, &args
.seq_args
,
7887 dprintk("<-- %s status=%d\n", __func__
, status
);
7896 nfs41_proc_secinfo_no_name(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
7897 struct nfs_fsinfo
*info
, struct nfs4_secinfo_flavors
*flavors
)
7899 struct nfs4_exception exception
= { };
7902 /* first try using integrity protection */
7903 err
= -NFS4ERR_WRONGSEC
;
7905 /* try to use integrity protection with machine cred */
7906 if (_nfs4_is_integrity_protected(server
->nfs_client
))
7907 err
= _nfs41_proc_secinfo_no_name(server
, fhandle
, info
,
7911 * if unable to use integrity protection, or SECINFO with
7912 * integrity protection returns NFS4ERR_WRONGSEC (which is
7913 * disallowed by spec, but exists in deployed servers) use
7914 * the current filesystem's rpc_client and the user cred.
7916 if (err
== -NFS4ERR_WRONGSEC
)
7917 err
= _nfs41_proc_secinfo_no_name(server
, fhandle
, info
,
7922 case -NFS4ERR_WRONGSEC
:
7923 case -NFS4ERR_NOTSUPP
:
7926 err
= nfs4_handle_exception(server
, err
, &exception
);
7928 } while (exception
.retry
);
7934 nfs41_find_root_sec(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
7935 struct nfs_fsinfo
*info
)
7939 rpc_authflavor_t flavor
= RPC_AUTH_MAXFLAVOR
;
7940 struct nfs4_secinfo_flavors
*flavors
;
7941 struct nfs4_secinfo4
*secinfo
;
7944 page
= alloc_page(GFP_KERNEL
);
7950 flavors
= page_address(page
);
7951 err
= nfs41_proc_secinfo_no_name(server
, fhandle
, info
, flavors
);
7954 * Fall back on "guess and check" method if
7955 * the server doesn't support SECINFO_NO_NAME
7957 if (err
== -NFS4ERR_WRONGSEC
|| err
== -NFS4ERR_NOTSUPP
) {
7958 err
= nfs4_find_root_sec(server
, fhandle
, info
);
7964 for (i
= 0; i
< flavors
->num_flavors
; i
++) {
7965 secinfo
= &flavors
->flavors
[i
];
7967 switch (secinfo
->flavor
) {
7971 flavor
= rpcauth_get_pseudoflavor(secinfo
->flavor
,
7972 &secinfo
->flavor_info
);
7975 flavor
= RPC_AUTH_MAXFLAVOR
;
7979 if (!nfs_auth_info_match(&server
->auth_info
, flavor
))
7980 flavor
= RPC_AUTH_MAXFLAVOR
;
7982 if (flavor
!= RPC_AUTH_MAXFLAVOR
) {
7983 err
= nfs4_lookup_root_sec(server
, fhandle
,
7990 if (flavor
== RPC_AUTH_MAXFLAVOR
)
8001 static int _nfs41_test_stateid(struct nfs_server
*server
,
8002 nfs4_stateid
*stateid
,
8003 struct rpc_cred
*cred
)
8006 struct nfs41_test_stateid_args args
= {
8009 struct nfs41_test_stateid_res res
;
8010 struct rpc_message msg
= {
8011 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_TEST_STATEID
],
8016 struct rpc_clnt
*rpc_client
= server
->client
;
8018 nfs4_state_protect(server
->nfs_client
, NFS_SP4_MACH_CRED_STATEID
,
8021 dprintk("NFS call test_stateid %p\n", stateid
);
8022 nfs4_init_sequence(&args
.seq_args
, &res
.seq_res
, 0);
8023 nfs4_set_sequence_privileged(&args
.seq_args
);
8024 status
= nfs4_call_sync_sequence(rpc_client
, server
, &msg
,
8025 &args
.seq_args
, &res
.seq_res
);
8026 if (status
!= NFS_OK
) {
8027 dprintk("NFS reply test_stateid: failed, %d\n", status
);
8030 dprintk("NFS reply test_stateid: succeeded, %d\n", -res
.status
);
8035 * nfs41_test_stateid - perform a TEST_STATEID operation
8037 * @server: server / transport on which to perform the operation
8038 * @stateid: state ID to test
8041 * Returns NFS_OK if the server recognizes that "stateid" is valid.
8042 * Otherwise a negative NFS4ERR value is returned if the operation
8043 * failed or the state ID is not currently valid.
8045 static int nfs41_test_stateid(struct nfs_server
*server
,
8046 nfs4_stateid
*stateid
,
8047 struct rpc_cred
*cred
)
8049 struct nfs4_exception exception
= { };
8052 err
= _nfs41_test_stateid(server
, stateid
, cred
);
8053 if (err
!= -NFS4ERR_DELAY
)
8055 nfs4_handle_exception(server
, err
, &exception
);
8056 } while (exception
.retry
);
8060 struct nfs_free_stateid_data
{
8061 struct nfs_server
*server
;
8062 struct nfs41_free_stateid_args args
;
8063 struct nfs41_free_stateid_res res
;
8066 static void nfs41_free_stateid_prepare(struct rpc_task
*task
, void *calldata
)
8068 struct nfs_free_stateid_data
*data
= calldata
;
8069 nfs41_setup_sequence(nfs4_get_session(data
->server
),
8070 &data
->args
.seq_args
,
8075 static void nfs41_free_stateid_done(struct rpc_task
*task
, void *calldata
)
8077 struct nfs_free_stateid_data
*data
= calldata
;
8079 nfs41_sequence_done(task
, &data
->res
.seq_res
);
8081 switch (task
->tk_status
) {
8082 case -NFS4ERR_DELAY
:
8083 if (nfs4_async_handle_error(task
, data
->server
, NULL
) == -EAGAIN
)
8084 rpc_restart_call_prepare(task
);
8088 static void nfs41_free_stateid_release(void *calldata
)
8093 static const struct rpc_call_ops nfs41_free_stateid_ops
= {
8094 .rpc_call_prepare
= nfs41_free_stateid_prepare
,
8095 .rpc_call_done
= nfs41_free_stateid_done
,
8096 .rpc_release
= nfs41_free_stateid_release
,
8099 static struct rpc_task
*_nfs41_free_stateid(struct nfs_server
*server
,
8100 nfs4_stateid
*stateid
,
8101 struct rpc_cred
*cred
,
8104 struct rpc_message msg
= {
8105 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FREE_STATEID
],
8108 struct rpc_task_setup task_setup
= {
8109 .rpc_client
= server
->client
,
8110 .rpc_message
= &msg
,
8111 .callback_ops
= &nfs41_free_stateid_ops
,
8112 .flags
= RPC_TASK_ASYNC
,
8114 struct nfs_free_stateid_data
*data
;
8116 nfs4_state_protect(server
->nfs_client
, NFS_SP4_MACH_CRED_STATEID
,
8117 &task_setup
.rpc_client
, &msg
);
8119 dprintk("NFS call free_stateid %p\n", stateid
);
8120 data
= kmalloc(sizeof(*data
), GFP_NOFS
);
8122 return ERR_PTR(-ENOMEM
);
8123 data
->server
= server
;
8124 nfs4_stateid_copy(&data
->args
.stateid
, stateid
);
8126 task_setup
.callback_data
= data
;
8128 msg
.rpc_argp
= &data
->args
;
8129 msg
.rpc_resp
= &data
->res
;
8130 nfs4_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 0);
8132 nfs4_set_sequence_privileged(&data
->args
.seq_args
);
8134 return rpc_run_task(&task_setup
);
8138 * nfs41_free_stateid - perform a FREE_STATEID operation
8140 * @server: server / transport on which to perform the operation
8141 * @stateid: state ID to release
8144 * Returns NFS_OK if the server freed "stateid". Otherwise a
8145 * negative NFS4ERR value is returned.
8147 static int nfs41_free_stateid(struct nfs_server
*server
,
8148 nfs4_stateid
*stateid
,
8149 struct rpc_cred
*cred
)
8151 struct rpc_task
*task
;
8154 task
= _nfs41_free_stateid(server
, stateid
, cred
, true);
8156 return PTR_ERR(task
);
8157 ret
= rpc_wait_for_completion_task(task
);
8159 ret
= task
->tk_status
;
8164 static int nfs41_free_lock_state(struct nfs_server
*server
, struct nfs4_lock_state
*lsp
)
8166 struct rpc_task
*task
;
8167 struct rpc_cred
*cred
= lsp
->ls_state
->owner
->so_cred
;
8169 task
= _nfs41_free_stateid(server
, &lsp
->ls_stateid
, cred
, false);
8170 nfs4_free_lock_state(server
, lsp
);
8172 return PTR_ERR(task
);
8177 static bool nfs41_match_stateid(const nfs4_stateid
*s1
,
8178 const nfs4_stateid
*s2
)
8180 if (memcmp(s1
->other
, s2
->other
, sizeof(s1
->other
)) != 0)
8183 if (s1
->seqid
== s2
->seqid
)
8185 if (s1
->seqid
== 0 || s2
->seqid
== 0)
8191 #endif /* CONFIG_NFS_V4_1 */
8193 static bool nfs4_match_stateid(const nfs4_stateid
*s1
,
8194 const nfs4_stateid
*s2
)
8196 return nfs4_stateid_match(s1
, s2
);
8200 static const struct nfs4_state_recovery_ops nfs40_reboot_recovery_ops
= {
8201 .owner_flag_bit
= NFS_OWNER_RECLAIM_REBOOT
,
8202 .state_flag_bit
= NFS_STATE_RECLAIM_REBOOT
,
8203 .recover_open
= nfs4_open_reclaim
,
8204 .recover_lock
= nfs4_lock_reclaim
,
8205 .establish_clid
= nfs4_init_clientid
,
8206 .detect_trunking
= nfs40_discover_server_trunking
,
8209 #if defined(CONFIG_NFS_V4_1)
8210 static const struct nfs4_state_recovery_ops nfs41_reboot_recovery_ops
= {
8211 .owner_flag_bit
= NFS_OWNER_RECLAIM_REBOOT
,
8212 .state_flag_bit
= NFS_STATE_RECLAIM_REBOOT
,
8213 .recover_open
= nfs4_open_reclaim
,
8214 .recover_lock
= nfs4_lock_reclaim
,
8215 .establish_clid
= nfs41_init_clientid
,
8216 .reclaim_complete
= nfs41_proc_reclaim_complete
,
8217 .detect_trunking
= nfs41_discover_server_trunking
,
8219 #endif /* CONFIG_NFS_V4_1 */
8221 static const struct nfs4_state_recovery_ops nfs40_nograce_recovery_ops
= {
8222 .owner_flag_bit
= NFS_OWNER_RECLAIM_NOGRACE
,
8223 .state_flag_bit
= NFS_STATE_RECLAIM_NOGRACE
,
8224 .recover_open
= nfs4_open_expired
,
8225 .recover_lock
= nfs4_lock_expired
,
8226 .establish_clid
= nfs4_init_clientid
,
8229 #if defined(CONFIG_NFS_V4_1)
8230 static const struct nfs4_state_recovery_ops nfs41_nograce_recovery_ops
= {
8231 .owner_flag_bit
= NFS_OWNER_RECLAIM_NOGRACE
,
8232 .state_flag_bit
= NFS_STATE_RECLAIM_NOGRACE
,
8233 .recover_open
= nfs41_open_expired
,
8234 .recover_lock
= nfs41_lock_expired
,
8235 .establish_clid
= nfs41_init_clientid
,
8237 #endif /* CONFIG_NFS_V4_1 */
8239 static const struct nfs4_state_maintenance_ops nfs40_state_renewal_ops
= {
8240 .sched_state_renewal
= nfs4_proc_async_renew
,
8241 .get_state_renewal_cred_locked
= nfs4_get_renew_cred_locked
,
8242 .renew_lease
= nfs4_proc_renew
,
8245 #if defined(CONFIG_NFS_V4_1)
8246 static const struct nfs4_state_maintenance_ops nfs41_state_renewal_ops
= {
8247 .sched_state_renewal
= nfs41_proc_async_sequence
,
8248 .get_state_renewal_cred_locked
= nfs4_get_machine_cred_locked
,
8249 .renew_lease
= nfs4_proc_sequence
,
8253 static const struct nfs4_mig_recovery_ops nfs40_mig_recovery_ops
= {
8254 .get_locations
= _nfs40_proc_get_locations
,
8255 .fsid_present
= _nfs40_proc_fsid_present
,
8258 #if defined(CONFIG_NFS_V4_1)
8259 static const struct nfs4_mig_recovery_ops nfs41_mig_recovery_ops
= {
8260 .get_locations
= _nfs41_proc_get_locations
,
8261 .fsid_present
= _nfs41_proc_fsid_present
,
8263 #endif /* CONFIG_NFS_V4_1 */
8265 static const struct nfs4_minor_version_ops nfs_v4_0_minor_ops
= {
8267 .init_caps
= NFS_CAP_READDIRPLUS
8268 | NFS_CAP_ATOMIC_OPEN
8269 | NFS_CAP_CHANGE_ATTR
8270 | NFS_CAP_POSIX_LOCK
,
8271 .init_client
= nfs40_init_client
,
8272 .shutdown_client
= nfs40_shutdown_client
,
8273 .match_stateid
= nfs4_match_stateid
,
8274 .find_root_sec
= nfs4_find_root_sec
,
8275 .free_lock_state
= nfs4_release_lockowner
,
8276 .call_sync_ops
= &nfs40_call_sync_ops
,
8277 .reboot_recovery_ops
= &nfs40_reboot_recovery_ops
,
8278 .nograce_recovery_ops
= &nfs40_nograce_recovery_ops
,
8279 .state_renewal_ops
= &nfs40_state_renewal_ops
,
8280 .mig_recovery_ops
= &nfs40_mig_recovery_ops
,
8283 #if defined(CONFIG_NFS_V4_1)
8284 static const struct nfs4_minor_version_ops nfs_v4_1_minor_ops
= {
8286 .init_caps
= NFS_CAP_READDIRPLUS
8287 | NFS_CAP_ATOMIC_OPEN
8288 | NFS_CAP_CHANGE_ATTR
8289 | NFS_CAP_POSIX_LOCK
8290 | NFS_CAP_STATEID_NFSV41
8291 | NFS_CAP_ATOMIC_OPEN_V1
,
8292 .init_client
= nfs41_init_client
,
8293 .shutdown_client
= nfs41_shutdown_client
,
8294 .match_stateid
= nfs41_match_stateid
,
8295 .find_root_sec
= nfs41_find_root_sec
,
8296 .free_lock_state
= nfs41_free_lock_state
,
8297 .call_sync_ops
= &nfs41_call_sync_ops
,
8298 .reboot_recovery_ops
= &nfs41_reboot_recovery_ops
,
8299 .nograce_recovery_ops
= &nfs41_nograce_recovery_ops
,
8300 .state_renewal_ops
= &nfs41_state_renewal_ops
,
8301 .mig_recovery_ops
= &nfs41_mig_recovery_ops
,
8305 #if defined(CONFIG_NFS_V4_2)
8306 static const struct nfs4_minor_version_ops nfs_v4_2_minor_ops
= {
8308 .init_caps
= NFS_CAP_READDIRPLUS
8309 | NFS_CAP_ATOMIC_OPEN
8310 | NFS_CAP_CHANGE_ATTR
8311 | NFS_CAP_POSIX_LOCK
8312 | NFS_CAP_STATEID_NFSV41
8313 | NFS_CAP_ATOMIC_OPEN_V1
,
8314 .init_client
= nfs41_init_client
,
8315 .shutdown_client
= nfs41_shutdown_client
,
8316 .match_stateid
= nfs41_match_stateid
,
8317 .find_root_sec
= nfs41_find_root_sec
,
8318 .free_lock_state
= nfs41_free_lock_state
,
8319 .call_sync_ops
= &nfs41_call_sync_ops
,
8320 .reboot_recovery_ops
= &nfs41_reboot_recovery_ops
,
8321 .nograce_recovery_ops
= &nfs41_nograce_recovery_ops
,
8322 .state_renewal_ops
= &nfs41_state_renewal_ops
,
8326 const struct nfs4_minor_version_ops
*nfs_v4_minor_ops
[] = {
8327 [0] = &nfs_v4_0_minor_ops
,
8328 #if defined(CONFIG_NFS_V4_1)
8329 [1] = &nfs_v4_1_minor_ops
,
8331 #if defined(CONFIG_NFS_V4_2)
8332 [2] = &nfs_v4_2_minor_ops
,
8336 static const struct inode_operations nfs4_dir_inode_operations
= {
8337 .create
= nfs_create
,
8338 .lookup
= nfs_lookup
,
8339 .atomic_open
= nfs_atomic_open
,
8341 .unlink
= nfs_unlink
,
8342 .symlink
= nfs_symlink
,
8346 .rename
= nfs_rename
,
8347 .permission
= nfs_permission
,
8348 .getattr
= nfs_getattr
,
8349 .setattr
= nfs_setattr
,
8350 .getxattr
= generic_getxattr
,
8351 .setxattr
= generic_setxattr
,
8352 .listxattr
= generic_listxattr
,
8353 .removexattr
= generic_removexattr
,
8356 static const struct inode_operations nfs4_file_inode_operations
= {
8357 .permission
= nfs_permission
,
8358 .getattr
= nfs_getattr
,
8359 .setattr
= nfs_setattr
,
8360 .getxattr
= generic_getxattr
,
8361 .setxattr
= generic_setxattr
,
8362 .listxattr
= generic_listxattr
,
8363 .removexattr
= generic_removexattr
,
8366 const struct nfs_rpc_ops nfs_v4_clientops
= {
8367 .version
= 4, /* protocol version */
8368 .dentry_ops
= &nfs4_dentry_operations
,
8369 .dir_inode_ops
= &nfs4_dir_inode_operations
,
8370 .file_inode_ops
= &nfs4_file_inode_operations
,
8371 .file_ops
= &nfs4_file_operations
,
8372 .getroot
= nfs4_proc_get_root
,
8373 .submount
= nfs4_submount
,
8374 .try_mount
= nfs4_try_mount
,
8375 .getattr
= nfs4_proc_getattr
,
8376 .setattr
= nfs4_proc_setattr
,
8377 .lookup
= nfs4_proc_lookup
,
8378 .access
= nfs4_proc_access
,
8379 .readlink
= nfs4_proc_readlink
,
8380 .create
= nfs4_proc_create
,
8381 .remove
= nfs4_proc_remove
,
8382 .unlink_setup
= nfs4_proc_unlink_setup
,
8383 .unlink_rpc_prepare
= nfs4_proc_unlink_rpc_prepare
,
8384 .unlink_done
= nfs4_proc_unlink_done
,
8385 .rename
= nfs4_proc_rename
,
8386 .rename_setup
= nfs4_proc_rename_setup
,
8387 .rename_rpc_prepare
= nfs4_proc_rename_rpc_prepare
,
8388 .rename_done
= nfs4_proc_rename_done
,
8389 .link
= nfs4_proc_link
,
8390 .symlink
= nfs4_proc_symlink
,
8391 .mkdir
= nfs4_proc_mkdir
,
8392 .rmdir
= nfs4_proc_remove
,
8393 .readdir
= nfs4_proc_readdir
,
8394 .mknod
= nfs4_proc_mknod
,
8395 .statfs
= nfs4_proc_statfs
,
8396 .fsinfo
= nfs4_proc_fsinfo
,
8397 .pathconf
= nfs4_proc_pathconf
,
8398 .set_capabilities
= nfs4_server_capabilities
,
8399 .decode_dirent
= nfs4_decode_dirent
,
8400 .read_setup
= nfs4_proc_read_setup
,
8401 .read_pageio_init
= pnfs_pageio_init_read
,
8402 .read_rpc_prepare
= nfs4_proc_read_rpc_prepare
,
8403 .read_done
= nfs4_read_done
,
8404 .write_setup
= nfs4_proc_write_setup
,
8405 .write_pageio_init
= pnfs_pageio_init_write
,
8406 .write_rpc_prepare
= nfs4_proc_write_rpc_prepare
,
8407 .write_done
= nfs4_write_done
,
8408 .commit_setup
= nfs4_proc_commit_setup
,
8409 .commit_rpc_prepare
= nfs4_proc_commit_rpc_prepare
,
8410 .commit_done
= nfs4_commit_done
,
8411 .lock
= nfs4_proc_lock
,
8412 .clear_acl_cache
= nfs4_zap_acl_attr
,
8413 .close_context
= nfs4_close_context
,
8414 .open_context
= nfs4_atomic_open
,
8415 .have_delegation
= nfs4_have_delegation
,
8416 .return_delegation
= nfs4_inode_return_delegation
,
8417 .alloc_client
= nfs4_alloc_client
,
8418 .init_client
= nfs4_init_client
,
8419 .free_client
= nfs4_free_client
,
8420 .create_server
= nfs4_create_server
,
8421 .clone_server
= nfs_clone_server
,
8424 static const struct xattr_handler nfs4_xattr_nfs4_acl_handler
= {
8425 .prefix
= XATTR_NAME_NFSV4_ACL
,
8426 .list
= nfs4_xattr_list_nfs4_acl
,
8427 .get
= nfs4_xattr_get_nfs4_acl
,
8428 .set
= nfs4_xattr_set_nfs4_acl
,
8431 const struct xattr_handler
*nfs4_xattr_handlers
[] = {
8432 &nfs4_xattr_nfs4_acl_handler
,
8433 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
8434 &nfs4_xattr_nfs4_label_handler
,