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/xattr.h>
55 #include <linux/utsname.h>
56 #include <linux/freezer.h>
59 #include "delegation.h"
65 #include "nfs4idmap.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
*, long *);
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_FILE_OPEN
:
164 dprintk("%s could not handle NFSv4 error %d\n",
172 * This is our standard bitmap for GETATTR requests.
174 const u32 nfs4_fattr_bitmap
[3] = {
176 | FATTR4_WORD0_CHANGE
179 | FATTR4_WORD0_FILEID
,
181 | FATTR4_WORD1_NUMLINKS
183 | FATTR4_WORD1_OWNER_GROUP
184 | FATTR4_WORD1_RAWDEV
185 | FATTR4_WORD1_SPACE_USED
186 | FATTR4_WORD1_TIME_ACCESS
187 | FATTR4_WORD1_TIME_METADATA
188 | FATTR4_WORD1_TIME_MODIFY
189 | FATTR4_WORD1_MOUNTED_ON_FILEID
,
190 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
191 FATTR4_WORD2_SECURITY_LABEL
195 static const u32 nfs4_pnfs_open_bitmap
[3] = {
197 | FATTR4_WORD0_CHANGE
200 | FATTR4_WORD0_FILEID
,
202 | FATTR4_WORD1_NUMLINKS
204 | FATTR4_WORD1_OWNER_GROUP
205 | FATTR4_WORD1_RAWDEV
206 | FATTR4_WORD1_SPACE_USED
207 | FATTR4_WORD1_TIME_ACCESS
208 | FATTR4_WORD1_TIME_METADATA
209 | FATTR4_WORD1_TIME_MODIFY
,
210 FATTR4_WORD2_MDSTHRESHOLD
213 static const u32 nfs4_open_noattr_bitmap
[3] = {
215 | FATTR4_WORD0_CHANGE
216 | FATTR4_WORD0_FILEID
,
219 const u32 nfs4_statfs_bitmap
[3] = {
220 FATTR4_WORD0_FILES_AVAIL
221 | FATTR4_WORD0_FILES_FREE
222 | FATTR4_WORD0_FILES_TOTAL
,
223 FATTR4_WORD1_SPACE_AVAIL
224 | FATTR4_WORD1_SPACE_FREE
225 | FATTR4_WORD1_SPACE_TOTAL
228 const u32 nfs4_pathconf_bitmap
[3] = {
230 | FATTR4_WORD0_MAXNAME
,
234 const u32 nfs4_fsinfo_bitmap
[3] = { FATTR4_WORD0_MAXFILESIZE
235 | FATTR4_WORD0_MAXREAD
236 | FATTR4_WORD0_MAXWRITE
237 | FATTR4_WORD0_LEASE_TIME
,
238 FATTR4_WORD1_TIME_DELTA
239 | FATTR4_WORD1_FS_LAYOUT_TYPES
,
240 FATTR4_WORD2_LAYOUT_BLKSIZE
243 const u32 nfs4_fs_locations_bitmap
[3] = {
245 | FATTR4_WORD0_CHANGE
248 | FATTR4_WORD0_FILEID
249 | FATTR4_WORD0_FS_LOCATIONS
,
251 | FATTR4_WORD1_NUMLINKS
253 | FATTR4_WORD1_OWNER_GROUP
254 | FATTR4_WORD1_RAWDEV
255 | FATTR4_WORD1_SPACE_USED
256 | FATTR4_WORD1_TIME_ACCESS
257 | FATTR4_WORD1_TIME_METADATA
258 | FATTR4_WORD1_TIME_MODIFY
259 | FATTR4_WORD1_MOUNTED_ON_FILEID
,
262 static void nfs4_setup_readdir(u64 cookie
, __be32
*verifier
, struct dentry
*dentry
,
263 struct nfs4_readdir_arg
*readdir
)
268 readdir
->cookie
= cookie
;
269 memcpy(&readdir
->verifier
, verifier
, sizeof(readdir
->verifier
));
274 memset(&readdir
->verifier
, 0, sizeof(readdir
->verifier
));
279 * NFSv4 servers do not return entries for '.' and '..'
280 * Therefore, we fake these entries here. We let '.'
281 * have cookie 0 and '..' have cookie 1. Note that
282 * when talking to the server, we always send cookie 0
285 start
= p
= kmap_atomic(*readdir
->pages
);
288 *p
++ = xdr_one
; /* next */
289 *p
++ = xdr_zero
; /* cookie, first word */
290 *p
++ = xdr_one
; /* cookie, second word */
291 *p
++ = xdr_one
; /* entry len */
292 memcpy(p
, ".\0\0\0", 4); /* entry */
294 *p
++ = xdr_one
; /* bitmap length */
295 *p
++ = htonl(FATTR4_WORD0_FILEID
); /* bitmap */
296 *p
++ = htonl(8); /* attribute buffer length */
297 p
= xdr_encode_hyper(p
, NFS_FILEID(d_inode(dentry
)));
300 *p
++ = xdr_one
; /* next */
301 *p
++ = xdr_zero
; /* cookie, first word */
302 *p
++ = xdr_two
; /* cookie, second word */
303 *p
++ = xdr_two
; /* entry len */
304 memcpy(p
, "..\0\0", 4); /* entry */
306 *p
++ = xdr_one
; /* bitmap length */
307 *p
++ = htonl(FATTR4_WORD0_FILEID
); /* bitmap */
308 *p
++ = htonl(8); /* attribute buffer length */
309 p
= xdr_encode_hyper(p
, NFS_FILEID(d_inode(dentry
->d_parent
)));
311 readdir
->pgbase
= (char *)p
- (char *)start
;
312 readdir
->count
-= readdir
->pgbase
;
313 kunmap_atomic(start
);
316 static long nfs4_update_delay(long *timeout
)
320 return NFS4_POLL_RETRY_MAX
;
322 *timeout
= NFS4_POLL_RETRY_MIN
;
323 if (*timeout
> NFS4_POLL_RETRY_MAX
)
324 *timeout
= NFS4_POLL_RETRY_MAX
;
330 static int nfs4_delay(struct rpc_clnt
*clnt
, long *timeout
)
336 freezable_schedule_timeout_killable_unsafe(
337 nfs4_update_delay(timeout
));
338 if (fatal_signal_pending(current
))
343 /* This is the error handling routine for processes that are allowed
346 int nfs4_handle_exception(struct nfs_server
*server
, int errorcode
, struct nfs4_exception
*exception
)
348 struct nfs_client
*clp
= server
->nfs_client
;
349 struct nfs4_state
*state
= exception
->state
;
350 struct inode
*inode
= exception
->inode
;
353 exception
->retry
= 0;
357 case -NFS4ERR_OPENMODE
:
358 if (inode
&& nfs4_have_delegation(inode
, FMODE_READ
)) {
359 nfs4_inode_return_delegation(inode
);
360 exception
->retry
= 1;
365 ret
= nfs4_schedule_stateid_recovery(server
, state
);
368 goto wait_on_recovery
;
369 case -NFS4ERR_DELEG_REVOKED
:
370 case -NFS4ERR_ADMIN_REVOKED
:
371 case -NFS4ERR_BAD_STATEID
:
374 ret
= nfs4_schedule_stateid_recovery(server
, state
);
377 goto wait_on_recovery
;
378 case -NFS4ERR_EXPIRED
:
380 ret
= nfs4_schedule_stateid_recovery(server
, state
);
384 case -NFS4ERR_STALE_STATEID
:
385 case -NFS4ERR_STALE_CLIENTID
:
386 nfs4_schedule_lease_recovery(clp
);
387 goto wait_on_recovery
;
389 ret
= nfs4_schedule_migration_recovery(server
);
392 goto wait_on_recovery
;
393 case -NFS4ERR_LEASE_MOVED
:
394 nfs4_schedule_lease_moved_recovery(clp
);
395 goto wait_on_recovery
;
396 #if defined(CONFIG_NFS_V4_1)
397 case -NFS4ERR_BADSESSION
:
398 case -NFS4ERR_BADSLOT
:
399 case -NFS4ERR_BAD_HIGH_SLOT
:
400 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
401 case -NFS4ERR_DEADSESSION
:
402 case -NFS4ERR_SEQ_FALSE_RETRY
:
403 case -NFS4ERR_SEQ_MISORDERED
:
404 dprintk("%s ERROR: %d Reset session\n", __func__
,
406 nfs4_schedule_session_recovery(clp
->cl_session
, errorcode
);
407 goto wait_on_recovery
;
408 #endif /* defined(CONFIG_NFS_V4_1) */
409 case -NFS4ERR_FILE_OPEN
:
410 if (exception
->timeout
> HZ
) {
411 /* We have retried a decent amount, time to
419 ret
= nfs4_delay(server
->client
, &exception
->timeout
);
422 case -NFS4ERR_RETRY_UNCACHED_REP
:
423 case -NFS4ERR_OLD_STATEID
:
424 exception
->retry
= 1;
426 case -NFS4ERR_BADOWNER
:
427 /* The following works around a Linux server bug! */
428 case -NFS4ERR_BADNAME
:
429 if (server
->caps
& NFS_CAP_UIDGID_NOMAP
) {
430 server
->caps
&= ~NFS_CAP_UIDGID_NOMAP
;
431 exception
->retry
= 1;
432 printk(KERN_WARNING
"NFS: v4 server %s "
433 "does not accept raw "
435 "Reenabling the idmapper.\n",
436 server
->nfs_client
->cl_hostname
);
439 /* We failed to handle the error */
440 return nfs4_map_errors(ret
);
442 ret
= nfs4_wait_clnt_recover(clp
);
443 if (test_bit(NFS_MIG_FAILED
, &server
->mig_status
))
446 exception
->retry
= 1;
451 * Return 'true' if 'clp' is using an rpc_client that is integrity protected
452 * or 'false' otherwise.
454 static bool _nfs4_is_integrity_protected(struct nfs_client
*clp
)
456 rpc_authflavor_t flavor
= clp
->cl_rpcclient
->cl_auth
->au_flavor
;
458 if (flavor
== RPC_AUTH_GSS_KRB5I
||
459 flavor
== RPC_AUTH_GSS_KRB5P
)
465 static void do_renew_lease(struct nfs_client
*clp
, unsigned long timestamp
)
467 spin_lock(&clp
->cl_lock
);
468 if (time_before(clp
->cl_last_renewal
,timestamp
))
469 clp
->cl_last_renewal
= timestamp
;
470 spin_unlock(&clp
->cl_lock
);
473 static void renew_lease(const struct nfs_server
*server
, unsigned long timestamp
)
475 do_renew_lease(server
->nfs_client
, timestamp
);
478 struct nfs4_call_sync_data
{
479 const struct nfs_server
*seq_server
;
480 struct nfs4_sequence_args
*seq_args
;
481 struct nfs4_sequence_res
*seq_res
;
484 static void nfs4_init_sequence(struct nfs4_sequence_args
*args
,
485 struct nfs4_sequence_res
*res
, int cache_reply
)
487 args
->sa_slot
= NULL
;
488 args
->sa_cache_this
= cache_reply
;
489 args
->sa_privileged
= 0;
494 static void nfs4_set_sequence_privileged(struct nfs4_sequence_args
*args
)
496 args
->sa_privileged
= 1;
499 int nfs40_setup_sequence(struct nfs4_slot_table
*tbl
,
500 struct nfs4_sequence_args
*args
,
501 struct nfs4_sequence_res
*res
,
502 struct rpc_task
*task
)
504 struct nfs4_slot
*slot
;
506 /* slot already allocated? */
507 if (res
->sr_slot
!= NULL
)
510 spin_lock(&tbl
->slot_tbl_lock
);
511 if (nfs4_slot_tbl_draining(tbl
) && !args
->sa_privileged
)
514 slot
= nfs4_alloc_slot(tbl
);
516 if (slot
== ERR_PTR(-ENOMEM
))
517 task
->tk_timeout
= HZ
>> 2;
520 spin_unlock(&tbl
->slot_tbl_lock
);
522 args
->sa_slot
= slot
;
526 rpc_call_start(task
);
530 if (args
->sa_privileged
)
531 rpc_sleep_on_priority(&tbl
->slot_tbl_waitq
, task
,
532 NULL
, RPC_PRIORITY_PRIVILEGED
);
534 rpc_sleep_on(&tbl
->slot_tbl_waitq
, task
, NULL
);
535 spin_unlock(&tbl
->slot_tbl_lock
);
538 EXPORT_SYMBOL_GPL(nfs40_setup_sequence
);
540 static int nfs40_sequence_done(struct rpc_task
*task
,
541 struct nfs4_sequence_res
*res
)
543 struct nfs4_slot
*slot
= res
->sr_slot
;
544 struct nfs4_slot_table
*tbl
;
550 spin_lock(&tbl
->slot_tbl_lock
);
551 if (!nfs41_wake_and_assign_slot(tbl
, slot
))
552 nfs4_free_slot(tbl
, slot
);
553 spin_unlock(&tbl
->slot_tbl_lock
);
560 #if defined(CONFIG_NFS_V4_1)
562 static void nfs41_sequence_free_slot(struct nfs4_sequence_res
*res
)
564 struct nfs4_session
*session
;
565 struct nfs4_slot_table
*tbl
;
566 struct nfs4_slot
*slot
= res
->sr_slot
;
567 bool send_new_highest_used_slotid
= false;
570 session
= tbl
->session
;
572 spin_lock(&tbl
->slot_tbl_lock
);
573 /* Be nice to the server: try to ensure that the last transmitted
574 * value for highest_user_slotid <= target_highest_slotid
576 if (tbl
->highest_used_slotid
> tbl
->target_highest_slotid
)
577 send_new_highest_used_slotid
= true;
579 if (nfs41_wake_and_assign_slot(tbl
, slot
)) {
580 send_new_highest_used_slotid
= false;
583 nfs4_free_slot(tbl
, slot
);
585 if (tbl
->highest_used_slotid
!= NFS4_NO_SLOT
)
586 send_new_highest_used_slotid
= false;
588 spin_unlock(&tbl
->slot_tbl_lock
);
590 if (send_new_highest_used_slotid
)
591 nfs41_server_notify_highest_slotid_update(session
->clp
);
594 int nfs41_sequence_done(struct rpc_task
*task
, struct nfs4_sequence_res
*res
)
596 struct nfs4_session
*session
;
597 struct nfs4_slot
*slot
= res
->sr_slot
;
598 struct nfs_client
*clp
;
599 bool interrupted
= false;
604 /* don't increment the sequence number if the task wasn't sent */
605 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
);
685 if (rpc_restart_call_prepare(task
)) {
691 if (!rpc_restart_call(task
))
693 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
696 EXPORT_SYMBOL_GPL(nfs41_sequence_done
);
698 int nfs4_sequence_done(struct rpc_task
*task
, struct nfs4_sequence_res
*res
)
700 if (res
->sr_slot
== NULL
)
702 if (!res
->sr_slot
->table
->session
)
703 return nfs40_sequence_done(task
, res
);
704 return nfs41_sequence_done(task
, res
);
706 EXPORT_SYMBOL_GPL(nfs4_sequence_done
);
708 int nfs41_setup_sequence(struct nfs4_session
*session
,
709 struct nfs4_sequence_args
*args
,
710 struct nfs4_sequence_res
*res
,
711 struct rpc_task
*task
)
713 struct nfs4_slot
*slot
;
714 struct nfs4_slot_table
*tbl
;
716 dprintk("--> %s\n", __func__
);
717 /* slot already allocated? */
718 if (res
->sr_slot
!= NULL
)
721 tbl
= &session
->fc_slot_table
;
723 task
->tk_timeout
= 0;
725 spin_lock(&tbl
->slot_tbl_lock
);
726 if (test_bit(NFS4_SLOT_TBL_DRAINING
, &tbl
->slot_tbl_state
) &&
727 !args
->sa_privileged
) {
728 /* The state manager will wait until the slot table is empty */
729 dprintk("%s session is draining\n", __func__
);
733 slot
= nfs4_alloc_slot(tbl
);
735 /* If out of memory, try again in 1/4 second */
736 if (slot
== ERR_PTR(-ENOMEM
))
737 task
->tk_timeout
= HZ
>> 2;
738 dprintk("<-- %s: no free slots\n", __func__
);
741 spin_unlock(&tbl
->slot_tbl_lock
);
743 args
->sa_slot
= slot
;
745 dprintk("<-- %s slotid=%u seqid=%u\n", __func__
,
746 slot
->slot_nr
, slot
->seq_nr
);
749 res
->sr_timestamp
= jiffies
;
750 res
->sr_status_flags
= 0;
752 * sr_status is only set in decode_sequence, and so will remain
753 * set to 1 if an rpc level failure occurs.
756 trace_nfs4_setup_sequence(session
, args
);
758 rpc_call_start(task
);
761 /* Privileged tasks are queued with top priority */
762 if (args
->sa_privileged
)
763 rpc_sleep_on_priority(&tbl
->slot_tbl_waitq
, task
,
764 NULL
, RPC_PRIORITY_PRIVILEGED
);
766 rpc_sleep_on(&tbl
->slot_tbl_waitq
, task
, NULL
);
767 spin_unlock(&tbl
->slot_tbl_lock
);
770 EXPORT_SYMBOL_GPL(nfs41_setup_sequence
);
772 static int nfs4_setup_sequence(const struct nfs_server
*server
,
773 struct nfs4_sequence_args
*args
,
774 struct nfs4_sequence_res
*res
,
775 struct rpc_task
*task
)
777 struct nfs4_session
*session
= nfs4_get_session(server
);
781 return nfs40_setup_sequence(server
->nfs_client
->cl_slot_tbl
,
784 dprintk("--> %s clp %p session %p sr_slot %u\n",
785 __func__
, session
->clp
, session
, res
->sr_slot
?
786 res
->sr_slot
->slot_nr
: NFS4_NO_SLOT
);
788 ret
= nfs41_setup_sequence(session
, args
, res
, task
);
790 dprintk("<-- %s status=%d\n", __func__
, ret
);
794 static void nfs41_call_sync_prepare(struct rpc_task
*task
, void *calldata
)
796 struct nfs4_call_sync_data
*data
= calldata
;
797 struct nfs4_session
*session
= nfs4_get_session(data
->seq_server
);
799 dprintk("--> %s data->seq_server %p\n", __func__
, data
->seq_server
);
801 nfs41_setup_sequence(session
, data
->seq_args
, data
->seq_res
, task
);
804 static void nfs41_call_sync_done(struct rpc_task
*task
, void *calldata
)
806 struct nfs4_call_sync_data
*data
= calldata
;
808 nfs41_sequence_done(task
, data
->seq_res
);
811 static const struct rpc_call_ops nfs41_call_sync_ops
= {
812 .rpc_call_prepare
= nfs41_call_sync_prepare
,
813 .rpc_call_done
= nfs41_call_sync_done
,
816 #else /* !CONFIG_NFS_V4_1 */
818 static int nfs4_setup_sequence(const struct nfs_server
*server
,
819 struct nfs4_sequence_args
*args
,
820 struct nfs4_sequence_res
*res
,
821 struct rpc_task
*task
)
823 return nfs40_setup_sequence(server
->nfs_client
->cl_slot_tbl
,
827 int nfs4_sequence_done(struct rpc_task
*task
,
828 struct nfs4_sequence_res
*res
)
830 return nfs40_sequence_done(task
, res
);
832 EXPORT_SYMBOL_GPL(nfs4_sequence_done
);
834 #endif /* !CONFIG_NFS_V4_1 */
836 static void nfs40_call_sync_prepare(struct rpc_task
*task
, void *calldata
)
838 struct nfs4_call_sync_data
*data
= calldata
;
839 nfs4_setup_sequence(data
->seq_server
,
840 data
->seq_args
, data
->seq_res
, task
);
843 static void nfs40_call_sync_done(struct rpc_task
*task
, void *calldata
)
845 struct nfs4_call_sync_data
*data
= calldata
;
846 nfs4_sequence_done(task
, data
->seq_res
);
849 static const struct rpc_call_ops nfs40_call_sync_ops
= {
850 .rpc_call_prepare
= nfs40_call_sync_prepare
,
851 .rpc_call_done
= nfs40_call_sync_done
,
854 static int nfs4_call_sync_sequence(struct rpc_clnt
*clnt
,
855 struct nfs_server
*server
,
856 struct rpc_message
*msg
,
857 struct nfs4_sequence_args
*args
,
858 struct nfs4_sequence_res
*res
)
861 struct rpc_task
*task
;
862 struct nfs_client
*clp
= server
->nfs_client
;
863 struct nfs4_call_sync_data data
= {
864 .seq_server
= server
,
868 struct rpc_task_setup task_setup
= {
871 .callback_ops
= clp
->cl_mvops
->call_sync_ops
,
872 .callback_data
= &data
875 task
= rpc_run_task(&task_setup
);
879 ret
= task
->tk_status
;
885 int nfs4_call_sync(struct rpc_clnt
*clnt
,
886 struct nfs_server
*server
,
887 struct rpc_message
*msg
,
888 struct nfs4_sequence_args
*args
,
889 struct nfs4_sequence_res
*res
,
892 nfs4_init_sequence(args
, res
, cache_reply
);
893 return nfs4_call_sync_sequence(clnt
, server
, msg
, args
, res
);
896 static void update_changeattr(struct inode
*dir
, struct nfs4_change_info
*cinfo
)
898 struct nfs_inode
*nfsi
= NFS_I(dir
);
900 spin_lock(&dir
->i_lock
);
901 nfsi
->cache_validity
|= NFS_INO_INVALID_ATTR
|NFS_INO_INVALID_DATA
;
902 if (!cinfo
->atomic
|| cinfo
->before
!= dir
->i_version
)
903 nfs_force_lookup_revalidate(dir
);
904 dir
->i_version
= cinfo
->after
;
905 nfsi
->attr_gencount
= nfs_inc_attr_generation_counter();
906 nfs_fscache_invalidate(dir
);
907 spin_unlock(&dir
->i_lock
);
910 struct nfs4_opendata
{
912 struct nfs_openargs o_arg
;
913 struct nfs_openres o_res
;
914 struct nfs_open_confirmargs c_arg
;
915 struct nfs_open_confirmres c_res
;
916 struct nfs4_string owner_name
;
917 struct nfs4_string group_name
;
918 struct nfs_fattr f_attr
;
919 struct nfs4_label
*f_label
;
921 struct dentry
*dentry
;
922 struct nfs4_state_owner
*owner
;
923 struct nfs4_state
*state
;
925 unsigned long timestamp
;
926 unsigned int rpc_done
: 1;
927 unsigned int file_created
: 1;
928 unsigned int is_recover
: 1;
933 static bool nfs4_clear_cap_atomic_open_v1(struct nfs_server
*server
,
934 int err
, struct nfs4_exception
*exception
)
938 if (!(server
->caps
& NFS_CAP_ATOMIC_OPEN_V1
))
940 server
->caps
&= ~NFS_CAP_ATOMIC_OPEN_V1
;
941 exception
->retry
= 1;
946 nfs4_map_atomic_open_share(struct nfs_server
*server
,
947 fmode_t fmode
, int openflags
)
951 switch (fmode
& (FMODE_READ
| FMODE_WRITE
)) {
953 res
= NFS4_SHARE_ACCESS_READ
;
956 res
= NFS4_SHARE_ACCESS_WRITE
;
958 case FMODE_READ
|FMODE_WRITE
:
959 res
= NFS4_SHARE_ACCESS_BOTH
;
961 if (!(server
->caps
& NFS_CAP_ATOMIC_OPEN_V1
))
963 /* Want no delegation if we're using O_DIRECT */
964 if (openflags
& O_DIRECT
)
965 res
|= NFS4_SHARE_WANT_NO_DELEG
;
970 static enum open_claim_type4
971 nfs4_map_atomic_open_claim(struct nfs_server
*server
,
972 enum open_claim_type4 claim
)
974 if (server
->caps
& NFS_CAP_ATOMIC_OPEN_V1
)
979 case NFS4_OPEN_CLAIM_FH
:
980 return NFS4_OPEN_CLAIM_NULL
;
981 case NFS4_OPEN_CLAIM_DELEG_CUR_FH
:
982 return NFS4_OPEN_CLAIM_DELEGATE_CUR
;
983 case NFS4_OPEN_CLAIM_DELEG_PREV_FH
:
984 return NFS4_OPEN_CLAIM_DELEGATE_PREV
;
988 static void nfs4_init_opendata_res(struct nfs4_opendata
*p
)
990 p
->o_res
.f_attr
= &p
->f_attr
;
991 p
->o_res
.f_label
= p
->f_label
;
992 p
->o_res
.seqid
= p
->o_arg
.seqid
;
993 p
->c_res
.seqid
= p
->c_arg
.seqid
;
994 p
->o_res
.server
= p
->o_arg
.server
;
995 p
->o_res
.access_request
= p
->o_arg
.access
;
996 nfs_fattr_init(&p
->f_attr
);
997 nfs_fattr_init_names(&p
->f_attr
, &p
->owner_name
, &p
->group_name
);
1000 static struct nfs4_opendata
*nfs4_opendata_alloc(struct dentry
*dentry
,
1001 struct nfs4_state_owner
*sp
, fmode_t fmode
, int flags
,
1002 const struct iattr
*attrs
,
1003 struct nfs4_label
*label
,
1004 enum open_claim_type4 claim
,
1007 struct dentry
*parent
= dget_parent(dentry
);
1008 struct inode
*dir
= d_inode(parent
);
1009 struct nfs_server
*server
= NFS_SERVER(dir
);
1010 struct nfs_seqid
*(*alloc_seqid
)(struct nfs_seqid_counter
*, gfp_t
);
1011 struct nfs4_opendata
*p
;
1013 p
= kzalloc(sizeof(*p
), gfp_mask
);
1017 p
->f_label
= nfs4_label_alloc(server
, gfp_mask
);
1018 if (IS_ERR(p
->f_label
))
1021 alloc_seqid
= server
->nfs_client
->cl_mvops
->alloc_seqid
;
1022 p
->o_arg
.seqid
= alloc_seqid(&sp
->so_seqid
, gfp_mask
);
1023 if (IS_ERR(p
->o_arg
.seqid
))
1024 goto err_free_label
;
1025 nfs_sb_active(dentry
->d_sb
);
1026 p
->dentry
= dget(dentry
);
1029 atomic_inc(&sp
->so_count
);
1030 p
->o_arg
.open_flags
= flags
;
1031 p
->o_arg
.fmode
= fmode
& (FMODE_READ
|FMODE_WRITE
);
1032 p
->o_arg
.share_access
= nfs4_map_atomic_open_share(server
,
1034 /* don't put an ACCESS op in OPEN compound if O_EXCL, because ACCESS
1035 * will return permission denied for all bits until close */
1036 if (!(flags
& O_EXCL
)) {
1037 /* ask server to check for all possible rights as results
1039 p
->o_arg
.access
= NFS4_ACCESS_READ
| NFS4_ACCESS_MODIFY
|
1040 NFS4_ACCESS_EXTEND
| NFS4_ACCESS_EXECUTE
;
1042 p
->o_arg
.clientid
= server
->nfs_client
->cl_clientid
;
1043 p
->o_arg
.id
.create_time
= ktime_to_ns(sp
->so_seqid
.create_time
);
1044 p
->o_arg
.id
.uniquifier
= sp
->so_seqid
.owner_id
;
1045 p
->o_arg
.name
= &dentry
->d_name
;
1046 p
->o_arg
.server
= server
;
1047 p
->o_arg
.bitmask
= nfs4_bitmask(server
, label
);
1048 p
->o_arg
.open_bitmap
= &nfs4_fattr_bitmap
[0];
1049 p
->o_arg
.label
= label
;
1050 p
->o_arg
.claim
= nfs4_map_atomic_open_claim(server
, claim
);
1051 switch (p
->o_arg
.claim
) {
1052 case NFS4_OPEN_CLAIM_NULL
:
1053 case NFS4_OPEN_CLAIM_DELEGATE_CUR
:
1054 case NFS4_OPEN_CLAIM_DELEGATE_PREV
:
1055 p
->o_arg
.fh
= NFS_FH(dir
);
1057 case NFS4_OPEN_CLAIM_PREVIOUS
:
1058 case NFS4_OPEN_CLAIM_FH
:
1059 case NFS4_OPEN_CLAIM_DELEG_CUR_FH
:
1060 case NFS4_OPEN_CLAIM_DELEG_PREV_FH
:
1061 p
->o_arg
.fh
= NFS_FH(d_inode(dentry
));
1063 if (attrs
!= NULL
&& attrs
->ia_valid
!= 0) {
1066 p
->o_arg
.u
.attrs
= &p
->attrs
;
1067 memcpy(&p
->attrs
, attrs
, sizeof(p
->attrs
));
1070 verf
[1] = current
->pid
;
1071 memcpy(p
->o_arg
.u
.verifier
.data
, verf
,
1072 sizeof(p
->o_arg
.u
.verifier
.data
));
1074 p
->c_arg
.fh
= &p
->o_res
.fh
;
1075 p
->c_arg
.stateid
= &p
->o_res
.stateid
;
1076 p
->c_arg
.seqid
= p
->o_arg
.seqid
;
1077 nfs4_init_opendata_res(p
);
1078 kref_init(&p
->kref
);
1082 nfs4_label_free(p
->f_label
);
1090 static void nfs4_opendata_free(struct kref
*kref
)
1092 struct nfs4_opendata
*p
= container_of(kref
,
1093 struct nfs4_opendata
, kref
);
1094 struct super_block
*sb
= p
->dentry
->d_sb
;
1096 nfs_free_seqid(p
->o_arg
.seqid
);
1097 if (p
->state
!= NULL
)
1098 nfs4_put_open_state(p
->state
);
1099 nfs4_put_state_owner(p
->owner
);
1101 nfs4_label_free(p
->f_label
);
1105 nfs_sb_deactive(sb
);
1106 nfs_fattr_free_names(&p
->f_attr
);
1107 kfree(p
->f_attr
.mdsthreshold
);
1111 static void nfs4_opendata_put(struct nfs4_opendata
*p
)
1114 kref_put(&p
->kref
, nfs4_opendata_free
);
1117 static int nfs4_wait_for_completion_rpc_task(struct rpc_task
*task
)
1121 ret
= rpc_wait_for_completion_task(task
);
1125 static int can_open_cached(struct nfs4_state
*state
, fmode_t mode
, int open_mode
)
1129 if (open_mode
& (O_EXCL
|O_TRUNC
))
1131 switch (mode
& (FMODE_READ
|FMODE_WRITE
)) {
1133 ret
|= test_bit(NFS_O_RDONLY_STATE
, &state
->flags
) != 0
1134 && state
->n_rdonly
!= 0;
1137 ret
|= test_bit(NFS_O_WRONLY_STATE
, &state
->flags
) != 0
1138 && state
->n_wronly
!= 0;
1140 case FMODE_READ
|FMODE_WRITE
:
1141 ret
|= test_bit(NFS_O_RDWR_STATE
, &state
->flags
) != 0
1142 && state
->n_rdwr
!= 0;
1148 static int can_open_delegated(struct nfs_delegation
*delegation
, fmode_t fmode
)
1150 if (delegation
== NULL
)
1152 if ((delegation
->type
& fmode
) != fmode
)
1154 if (test_bit(NFS_DELEGATION_RETURNING
, &delegation
->flags
))
1156 nfs_mark_delegation_referenced(delegation
);
1160 static void update_open_stateflags(struct nfs4_state
*state
, fmode_t fmode
)
1169 case FMODE_READ
|FMODE_WRITE
:
1172 nfs4_state_set_mode_locked(state
, state
->state
| fmode
);
1175 static void nfs_test_and_clear_all_open_stateid(struct nfs4_state
*state
)
1177 struct nfs_client
*clp
= state
->owner
->so_server
->nfs_client
;
1178 bool need_recover
= false;
1180 if (test_and_clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
) && state
->n_rdonly
)
1181 need_recover
= true;
1182 if (test_and_clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
) && state
->n_wronly
)
1183 need_recover
= true;
1184 if (test_and_clear_bit(NFS_O_RDWR_STATE
, &state
->flags
) && state
->n_rdwr
)
1185 need_recover
= true;
1187 nfs4_state_mark_reclaim_nograce(clp
, state
);
1190 static bool nfs_need_update_open_stateid(struct nfs4_state
*state
,
1191 nfs4_stateid
*stateid
)
1193 if (test_and_set_bit(NFS_OPEN_STATE
, &state
->flags
) == 0)
1195 if (!nfs4_stateid_match_other(stateid
, &state
->open_stateid
)) {
1196 nfs_test_and_clear_all_open_stateid(state
);
1199 if (nfs4_stateid_is_newer(stateid
, &state
->open_stateid
))
1204 static void nfs_resync_open_stateid_locked(struct nfs4_state
*state
)
1206 if (state
->n_wronly
)
1207 set_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1208 if (state
->n_rdonly
)
1209 set_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1211 set_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1214 static void nfs_clear_open_stateid_locked(struct nfs4_state
*state
,
1215 nfs4_stateid
*stateid
, fmode_t fmode
)
1217 clear_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1218 switch (fmode
& (FMODE_READ
|FMODE_WRITE
)) {
1220 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1223 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1226 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1227 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1228 clear_bit(NFS_OPEN_STATE
, &state
->flags
);
1230 if (stateid
== NULL
)
1232 /* Handle races with OPEN */
1233 if (!nfs4_stateid_match_other(stateid
, &state
->open_stateid
) ||
1234 !nfs4_stateid_is_newer(stateid
, &state
->open_stateid
)) {
1235 nfs_resync_open_stateid_locked(state
);
1238 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0)
1239 nfs4_stateid_copy(&state
->stateid
, stateid
);
1240 nfs4_stateid_copy(&state
->open_stateid
, stateid
);
1243 static void nfs_clear_open_stateid(struct nfs4_state
*state
, nfs4_stateid
*stateid
, fmode_t fmode
)
1245 write_seqlock(&state
->seqlock
);
1246 nfs_clear_open_stateid_locked(state
, stateid
, fmode
);
1247 write_sequnlock(&state
->seqlock
);
1248 if (test_bit(NFS_STATE_RECLAIM_NOGRACE
, &state
->flags
))
1249 nfs4_schedule_state_manager(state
->owner
->so_server
->nfs_client
);
1252 static void nfs_set_open_stateid_locked(struct nfs4_state
*state
, nfs4_stateid
*stateid
, fmode_t fmode
)
1256 set_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1259 set_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1261 case FMODE_READ
|FMODE_WRITE
:
1262 set_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1264 if (!nfs_need_update_open_stateid(state
, stateid
))
1266 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0)
1267 nfs4_stateid_copy(&state
->stateid
, stateid
);
1268 nfs4_stateid_copy(&state
->open_stateid
, stateid
);
1271 static void __update_open_stateid(struct nfs4_state
*state
, nfs4_stateid
*open_stateid
, const nfs4_stateid
*deleg_stateid
, fmode_t fmode
)
1274 * Protect the call to nfs4_state_set_mode_locked and
1275 * serialise the stateid update
1277 write_seqlock(&state
->seqlock
);
1278 if (deleg_stateid
!= NULL
) {
1279 nfs4_stateid_copy(&state
->stateid
, deleg_stateid
);
1280 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1282 if (open_stateid
!= NULL
)
1283 nfs_set_open_stateid_locked(state
, open_stateid
, fmode
);
1284 write_sequnlock(&state
->seqlock
);
1285 spin_lock(&state
->owner
->so_lock
);
1286 update_open_stateflags(state
, fmode
);
1287 spin_unlock(&state
->owner
->so_lock
);
1290 static int update_open_stateid(struct nfs4_state
*state
, nfs4_stateid
*open_stateid
, nfs4_stateid
*delegation
, fmode_t fmode
)
1292 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
1293 struct nfs_delegation
*deleg_cur
;
1296 fmode
&= (FMODE_READ
|FMODE_WRITE
);
1299 deleg_cur
= rcu_dereference(nfsi
->delegation
);
1300 if (deleg_cur
== NULL
)
1303 spin_lock(&deleg_cur
->lock
);
1304 if (rcu_dereference(nfsi
->delegation
) != deleg_cur
||
1305 test_bit(NFS_DELEGATION_RETURNING
, &deleg_cur
->flags
) ||
1306 (deleg_cur
->type
& fmode
) != fmode
)
1307 goto no_delegation_unlock
;
1309 if (delegation
== NULL
)
1310 delegation
= &deleg_cur
->stateid
;
1311 else if (!nfs4_stateid_match(&deleg_cur
->stateid
, delegation
))
1312 goto no_delegation_unlock
;
1314 nfs_mark_delegation_referenced(deleg_cur
);
1315 __update_open_stateid(state
, open_stateid
, &deleg_cur
->stateid
, fmode
);
1317 no_delegation_unlock
:
1318 spin_unlock(&deleg_cur
->lock
);
1322 if (!ret
&& open_stateid
!= NULL
) {
1323 __update_open_stateid(state
, open_stateid
, NULL
, fmode
);
1326 if (test_bit(NFS_STATE_RECLAIM_NOGRACE
, &state
->flags
))
1327 nfs4_schedule_state_manager(state
->owner
->so_server
->nfs_client
);
1332 static bool nfs4_update_lock_stateid(struct nfs4_lock_state
*lsp
,
1333 const nfs4_stateid
*stateid
)
1335 struct nfs4_state
*state
= lsp
->ls_state
;
1338 spin_lock(&state
->state_lock
);
1339 if (!nfs4_stateid_match_other(stateid
, &lsp
->ls_stateid
))
1341 if (!nfs4_stateid_is_newer(stateid
, &lsp
->ls_stateid
))
1343 nfs4_stateid_copy(&lsp
->ls_stateid
, stateid
);
1346 spin_unlock(&state
->state_lock
);
1350 static void nfs4_return_incompatible_delegation(struct inode
*inode
, fmode_t fmode
)
1352 struct nfs_delegation
*delegation
;
1355 delegation
= rcu_dereference(NFS_I(inode
)->delegation
);
1356 if (delegation
== NULL
|| (delegation
->type
& fmode
) == fmode
) {
1361 nfs4_inode_return_delegation(inode
);
1364 static struct nfs4_state
*nfs4_try_open_cached(struct nfs4_opendata
*opendata
)
1366 struct nfs4_state
*state
= opendata
->state
;
1367 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
1368 struct nfs_delegation
*delegation
;
1369 int open_mode
= opendata
->o_arg
.open_flags
;
1370 fmode_t fmode
= opendata
->o_arg
.fmode
;
1371 nfs4_stateid stateid
;
1375 spin_lock(&state
->owner
->so_lock
);
1376 if (can_open_cached(state
, fmode
, open_mode
)) {
1377 update_open_stateflags(state
, fmode
);
1378 spin_unlock(&state
->owner
->so_lock
);
1379 goto out_return_state
;
1381 spin_unlock(&state
->owner
->so_lock
);
1383 delegation
= rcu_dereference(nfsi
->delegation
);
1384 if (!can_open_delegated(delegation
, fmode
)) {
1388 /* Save the delegation */
1389 nfs4_stateid_copy(&stateid
, &delegation
->stateid
);
1391 nfs_release_seqid(opendata
->o_arg
.seqid
);
1392 if (!opendata
->is_recover
) {
1393 ret
= nfs_may_open(state
->inode
, state
->owner
->so_cred
, open_mode
);
1399 /* Try to update the stateid using the delegation */
1400 if (update_open_stateid(state
, NULL
, &stateid
, fmode
))
1401 goto out_return_state
;
1404 return ERR_PTR(ret
);
1406 atomic_inc(&state
->count
);
1411 nfs4_opendata_check_deleg(struct nfs4_opendata
*data
, struct nfs4_state
*state
)
1413 struct nfs_client
*clp
= NFS_SERVER(state
->inode
)->nfs_client
;
1414 struct nfs_delegation
*delegation
;
1415 int delegation_flags
= 0;
1418 delegation
= rcu_dereference(NFS_I(state
->inode
)->delegation
);
1420 delegation_flags
= delegation
->flags
;
1422 if (data
->o_arg
.claim
== NFS4_OPEN_CLAIM_DELEGATE_CUR
) {
1423 pr_err_ratelimited("NFS: Broken NFSv4 server %s is "
1424 "returning a delegation for "
1425 "OPEN(CLAIM_DELEGATE_CUR)\n",
1427 } else if ((delegation_flags
& 1UL<<NFS_DELEGATION_NEED_RECLAIM
) == 0)
1428 nfs_inode_set_delegation(state
->inode
,
1429 data
->owner
->so_cred
,
1432 nfs_inode_reclaim_delegation(state
->inode
,
1433 data
->owner
->so_cred
,
1438 * Check the inode attributes against the CLAIM_PREVIOUS returned attributes
1439 * and update the nfs4_state.
1441 static struct nfs4_state
*
1442 _nfs4_opendata_reclaim_to_nfs4_state(struct nfs4_opendata
*data
)
1444 struct inode
*inode
= data
->state
->inode
;
1445 struct nfs4_state
*state
= data
->state
;
1448 if (!data
->rpc_done
) {
1449 if (data
->rpc_status
) {
1450 ret
= data
->rpc_status
;
1453 /* cached opens have already been processed */
1457 ret
= nfs_refresh_inode(inode
, &data
->f_attr
);
1461 if (data
->o_res
.delegation_type
!= 0)
1462 nfs4_opendata_check_deleg(data
, state
);
1464 update_open_stateid(state
, &data
->o_res
.stateid
, NULL
,
1466 atomic_inc(&state
->count
);
1470 return ERR_PTR(ret
);
1474 static struct nfs4_state
*
1475 _nfs4_opendata_to_nfs4_state(struct nfs4_opendata
*data
)
1477 struct inode
*inode
;
1478 struct nfs4_state
*state
= NULL
;
1481 if (!data
->rpc_done
) {
1482 state
= nfs4_try_open_cached(data
);
1487 if (!(data
->f_attr
.valid
& NFS_ATTR_FATTR
))
1489 inode
= nfs_fhget(data
->dir
->d_sb
, &data
->o_res
.fh
, &data
->f_attr
, data
->f_label
);
1490 ret
= PTR_ERR(inode
);
1494 state
= nfs4_get_open_state(inode
, data
->owner
);
1497 if (data
->o_res
.delegation_type
!= 0)
1498 nfs4_opendata_check_deleg(data
, state
);
1499 update_open_stateid(state
, &data
->o_res
.stateid
, NULL
,
1503 nfs_release_seqid(data
->o_arg
.seqid
);
1508 return ERR_PTR(ret
);
1511 static struct nfs4_state
*
1512 nfs4_opendata_to_nfs4_state(struct nfs4_opendata
*data
)
1514 if (data
->o_arg
.claim
== NFS4_OPEN_CLAIM_PREVIOUS
)
1515 return _nfs4_opendata_reclaim_to_nfs4_state(data
);
1516 return _nfs4_opendata_to_nfs4_state(data
);
1519 static struct nfs_open_context
*nfs4_state_find_open_context(struct nfs4_state
*state
)
1521 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
1522 struct nfs_open_context
*ctx
;
1524 spin_lock(&state
->inode
->i_lock
);
1525 list_for_each_entry(ctx
, &nfsi
->open_files
, list
) {
1526 if (ctx
->state
!= state
)
1528 get_nfs_open_context(ctx
);
1529 spin_unlock(&state
->inode
->i_lock
);
1532 spin_unlock(&state
->inode
->i_lock
);
1533 return ERR_PTR(-ENOENT
);
1536 static struct nfs4_opendata
*nfs4_open_recoverdata_alloc(struct nfs_open_context
*ctx
,
1537 struct nfs4_state
*state
, enum open_claim_type4 claim
)
1539 struct nfs4_opendata
*opendata
;
1541 opendata
= nfs4_opendata_alloc(ctx
->dentry
, state
->owner
, 0, 0,
1542 NULL
, NULL
, claim
, GFP_NOFS
);
1543 if (opendata
== NULL
)
1544 return ERR_PTR(-ENOMEM
);
1545 opendata
->state
= state
;
1546 atomic_inc(&state
->count
);
1550 static int nfs4_open_recover_helper(struct nfs4_opendata
*opendata
, fmode_t fmode
, struct nfs4_state
**res
)
1552 struct nfs4_state
*newstate
;
1555 opendata
->o_arg
.open_flags
= 0;
1556 opendata
->o_arg
.fmode
= fmode
;
1557 opendata
->o_arg
.share_access
= nfs4_map_atomic_open_share(
1558 NFS_SB(opendata
->dentry
->d_sb
),
1560 memset(&opendata
->o_res
, 0, sizeof(opendata
->o_res
));
1561 memset(&opendata
->c_res
, 0, sizeof(opendata
->c_res
));
1562 nfs4_init_opendata_res(opendata
);
1563 ret
= _nfs4_recover_proc_open(opendata
);
1566 newstate
= nfs4_opendata_to_nfs4_state(opendata
);
1567 if (IS_ERR(newstate
))
1568 return PTR_ERR(newstate
);
1569 nfs4_close_state(newstate
, fmode
);
1574 static int nfs4_open_recover(struct nfs4_opendata
*opendata
, struct nfs4_state
*state
)
1576 struct nfs4_state
*newstate
;
1579 /* Don't trigger recovery in nfs_test_and_clear_all_open_stateid */
1580 clear_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1581 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1582 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1583 /* memory barrier prior to reading state->n_* */
1584 clear_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1585 clear_bit(NFS_OPEN_STATE
, &state
->flags
);
1587 if (state
->n_rdwr
!= 0) {
1588 ret
= nfs4_open_recover_helper(opendata
, FMODE_READ
|FMODE_WRITE
, &newstate
);
1591 if (newstate
!= state
)
1594 if (state
->n_wronly
!= 0) {
1595 ret
= nfs4_open_recover_helper(opendata
, FMODE_WRITE
, &newstate
);
1598 if (newstate
!= state
)
1601 if (state
->n_rdonly
!= 0) {
1602 ret
= nfs4_open_recover_helper(opendata
, FMODE_READ
, &newstate
);
1605 if (newstate
!= state
)
1609 * We may have performed cached opens for all three recoveries.
1610 * Check if we need to update the current stateid.
1612 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0 &&
1613 !nfs4_stateid_match(&state
->stateid
, &state
->open_stateid
)) {
1614 write_seqlock(&state
->seqlock
);
1615 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0)
1616 nfs4_stateid_copy(&state
->stateid
, &state
->open_stateid
);
1617 write_sequnlock(&state
->seqlock
);
1624 * reclaim state on the server after a reboot.
1626 static int _nfs4_do_open_reclaim(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1628 struct nfs_delegation
*delegation
;
1629 struct nfs4_opendata
*opendata
;
1630 fmode_t delegation_type
= 0;
1633 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
,
1634 NFS4_OPEN_CLAIM_PREVIOUS
);
1635 if (IS_ERR(opendata
))
1636 return PTR_ERR(opendata
);
1638 delegation
= rcu_dereference(NFS_I(state
->inode
)->delegation
);
1639 if (delegation
!= NULL
&& test_bit(NFS_DELEGATION_NEED_RECLAIM
, &delegation
->flags
) != 0)
1640 delegation_type
= delegation
->type
;
1642 opendata
->o_arg
.u
.delegation_type
= delegation_type
;
1643 status
= nfs4_open_recover(opendata
, state
);
1644 nfs4_opendata_put(opendata
);
1648 static int nfs4_do_open_reclaim(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1650 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1651 struct nfs4_exception exception
= { };
1654 err
= _nfs4_do_open_reclaim(ctx
, state
);
1655 trace_nfs4_open_reclaim(ctx
, 0, err
);
1656 if (nfs4_clear_cap_atomic_open_v1(server
, err
, &exception
))
1658 if (err
!= -NFS4ERR_DELAY
)
1660 nfs4_handle_exception(server
, err
, &exception
);
1661 } while (exception
.retry
);
1665 static int nfs4_open_reclaim(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
1667 struct nfs_open_context
*ctx
;
1670 ctx
= nfs4_state_find_open_context(state
);
1673 ret
= nfs4_do_open_reclaim(ctx
, state
);
1674 put_nfs_open_context(ctx
);
1678 static int nfs4_handle_delegation_recall_error(struct nfs_server
*server
, struct nfs4_state
*state
, const nfs4_stateid
*stateid
, int err
)
1682 printk(KERN_ERR
"NFS: %s: unhandled error "
1683 "%d.\n", __func__
, err
);
1688 case -NFS4ERR_BADSESSION
:
1689 case -NFS4ERR_BADSLOT
:
1690 case -NFS4ERR_BAD_HIGH_SLOT
:
1691 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
1692 case -NFS4ERR_DEADSESSION
:
1693 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1694 nfs4_schedule_session_recovery(server
->nfs_client
->cl_session
, err
);
1696 case -NFS4ERR_STALE_CLIENTID
:
1697 case -NFS4ERR_STALE_STATEID
:
1698 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1699 case -NFS4ERR_EXPIRED
:
1700 /* Don't recall a delegation if it was lost */
1701 nfs4_schedule_lease_recovery(server
->nfs_client
);
1703 case -NFS4ERR_MOVED
:
1704 nfs4_schedule_migration_recovery(server
);
1706 case -NFS4ERR_LEASE_MOVED
:
1707 nfs4_schedule_lease_moved_recovery(server
->nfs_client
);
1709 case -NFS4ERR_DELEG_REVOKED
:
1710 case -NFS4ERR_ADMIN_REVOKED
:
1711 case -NFS4ERR_BAD_STATEID
:
1712 case -NFS4ERR_OPENMODE
:
1713 nfs_inode_find_state_and_recover(state
->inode
,
1715 nfs4_schedule_stateid_recovery(server
, state
);
1717 case -NFS4ERR_DELAY
:
1718 case -NFS4ERR_GRACE
:
1719 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1723 case -NFS4ERR_DENIED
:
1724 /* kill_proc(fl->fl_pid, SIGLOST, 1); */
1730 int nfs4_open_delegation_recall(struct nfs_open_context
*ctx
, struct nfs4_state
*state
, const nfs4_stateid
*stateid
)
1732 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1733 struct nfs4_opendata
*opendata
;
1736 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
,
1737 NFS4_OPEN_CLAIM_DELEG_CUR_FH
);
1738 if (IS_ERR(opendata
))
1739 return PTR_ERR(opendata
);
1740 nfs4_stateid_copy(&opendata
->o_arg
.u
.delegation
, stateid
);
1741 err
= nfs4_open_recover(opendata
, state
);
1742 nfs4_opendata_put(opendata
);
1743 return nfs4_handle_delegation_recall_error(server
, state
, stateid
, err
);
1746 static void nfs4_open_confirm_prepare(struct rpc_task
*task
, void *calldata
)
1748 struct nfs4_opendata
*data
= calldata
;
1750 nfs40_setup_sequence(data
->o_arg
.server
->nfs_client
->cl_slot_tbl
,
1751 &data
->c_arg
.seq_args
, &data
->c_res
.seq_res
, task
);
1754 static void nfs4_open_confirm_done(struct rpc_task
*task
, void *calldata
)
1756 struct nfs4_opendata
*data
= calldata
;
1758 nfs40_sequence_done(task
, &data
->c_res
.seq_res
);
1760 data
->rpc_status
= task
->tk_status
;
1761 if (data
->rpc_status
== 0) {
1762 nfs4_stateid_copy(&data
->o_res
.stateid
, &data
->c_res
.stateid
);
1763 nfs_confirm_seqid(&data
->owner
->so_seqid
, 0);
1764 renew_lease(data
->o_res
.server
, data
->timestamp
);
1769 static void nfs4_open_confirm_release(void *calldata
)
1771 struct nfs4_opendata
*data
= calldata
;
1772 struct nfs4_state
*state
= NULL
;
1774 /* If this request hasn't been cancelled, do nothing */
1775 if (data
->cancelled
== 0)
1777 /* In case of error, no cleanup! */
1778 if (!data
->rpc_done
)
1780 state
= nfs4_opendata_to_nfs4_state(data
);
1782 nfs4_close_state(state
, data
->o_arg
.fmode
);
1784 nfs4_opendata_put(data
);
1787 static const struct rpc_call_ops nfs4_open_confirm_ops
= {
1788 .rpc_call_prepare
= nfs4_open_confirm_prepare
,
1789 .rpc_call_done
= nfs4_open_confirm_done
,
1790 .rpc_release
= nfs4_open_confirm_release
,
1794 * Note: On error, nfs4_proc_open_confirm will free the struct nfs4_opendata
1796 static int _nfs4_proc_open_confirm(struct nfs4_opendata
*data
)
1798 struct nfs_server
*server
= NFS_SERVER(d_inode(data
->dir
));
1799 struct rpc_task
*task
;
1800 struct rpc_message msg
= {
1801 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_CONFIRM
],
1802 .rpc_argp
= &data
->c_arg
,
1803 .rpc_resp
= &data
->c_res
,
1804 .rpc_cred
= data
->owner
->so_cred
,
1806 struct rpc_task_setup task_setup_data
= {
1807 .rpc_client
= server
->client
,
1808 .rpc_message
= &msg
,
1809 .callback_ops
= &nfs4_open_confirm_ops
,
1810 .callback_data
= data
,
1811 .workqueue
= nfsiod_workqueue
,
1812 .flags
= RPC_TASK_ASYNC
,
1816 nfs4_init_sequence(&data
->c_arg
.seq_args
, &data
->c_res
.seq_res
, 1);
1817 kref_get(&data
->kref
);
1819 data
->rpc_status
= 0;
1820 data
->timestamp
= jiffies
;
1821 task
= rpc_run_task(&task_setup_data
);
1823 return PTR_ERR(task
);
1824 status
= nfs4_wait_for_completion_rpc_task(task
);
1826 data
->cancelled
= 1;
1829 status
= data
->rpc_status
;
1834 static void nfs4_open_prepare(struct rpc_task
*task
, void *calldata
)
1836 struct nfs4_opendata
*data
= calldata
;
1837 struct nfs4_state_owner
*sp
= data
->owner
;
1838 struct nfs_client
*clp
= sp
->so_server
->nfs_client
;
1840 if (nfs_wait_on_sequence(data
->o_arg
.seqid
, task
) != 0)
1843 * Check if we still need to send an OPEN call, or if we can use
1844 * a delegation instead.
1846 if (data
->state
!= NULL
) {
1847 struct nfs_delegation
*delegation
;
1849 if (can_open_cached(data
->state
, data
->o_arg
.fmode
, data
->o_arg
.open_flags
))
1852 delegation
= rcu_dereference(NFS_I(data
->state
->inode
)->delegation
);
1853 if (data
->o_arg
.claim
!= NFS4_OPEN_CLAIM_DELEGATE_CUR
&&
1854 data
->o_arg
.claim
!= NFS4_OPEN_CLAIM_DELEG_CUR_FH
&&
1855 can_open_delegated(delegation
, data
->o_arg
.fmode
))
1856 goto unlock_no_action
;
1859 /* Update client id. */
1860 data
->o_arg
.clientid
= clp
->cl_clientid
;
1861 switch (data
->o_arg
.claim
) {
1862 case NFS4_OPEN_CLAIM_PREVIOUS
:
1863 case NFS4_OPEN_CLAIM_DELEG_CUR_FH
:
1864 case NFS4_OPEN_CLAIM_DELEG_PREV_FH
:
1865 data
->o_arg
.open_bitmap
= &nfs4_open_noattr_bitmap
[0];
1866 case NFS4_OPEN_CLAIM_FH
:
1867 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_NOATTR
];
1868 nfs_copy_fh(&data
->o_res
.fh
, data
->o_arg
.fh
);
1870 data
->timestamp
= jiffies
;
1871 if (nfs4_setup_sequence(data
->o_arg
.server
,
1872 &data
->o_arg
.seq_args
,
1873 &data
->o_res
.seq_res
,
1875 nfs_release_seqid(data
->o_arg
.seqid
);
1877 /* Set the create mode (note dependency on the session type) */
1878 data
->o_arg
.createmode
= NFS4_CREATE_UNCHECKED
;
1879 if (data
->o_arg
.open_flags
& O_EXCL
) {
1880 data
->o_arg
.createmode
= NFS4_CREATE_EXCLUSIVE
;
1881 if (nfs4_has_persistent_session(clp
))
1882 data
->o_arg
.createmode
= NFS4_CREATE_GUARDED
;
1883 else if (clp
->cl_mvops
->minor_version
> 0)
1884 data
->o_arg
.createmode
= NFS4_CREATE_EXCLUSIVE4_1
;
1890 task
->tk_action
= NULL
;
1892 nfs4_sequence_done(task
, &data
->o_res
.seq_res
);
1895 static void nfs4_open_done(struct rpc_task
*task
, void *calldata
)
1897 struct nfs4_opendata
*data
= calldata
;
1899 data
->rpc_status
= task
->tk_status
;
1901 if (!nfs4_sequence_done(task
, &data
->o_res
.seq_res
))
1904 if (task
->tk_status
== 0) {
1905 if (data
->o_res
.f_attr
->valid
& NFS_ATTR_FATTR_TYPE
) {
1906 switch (data
->o_res
.f_attr
->mode
& S_IFMT
) {
1910 data
->rpc_status
= -ELOOP
;
1913 data
->rpc_status
= -EISDIR
;
1916 data
->rpc_status
= -ENOTDIR
;
1919 renew_lease(data
->o_res
.server
, data
->timestamp
);
1920 if (!(data
->o_res
.rflags
& NFS4_OPEN_RESULT_CONFIRM
))
1921 nfs_confirm_seqid(&data
->owner
->so_seqid
, 0);
1926 static void nfs4_open_release(void *calldata
)
1928 struct nfs4_opendata
*data
= calldata
;
1929 struct nfs4_state
*state
= NULL
;
1931 /* If this request hasn't been cancelled, do nothing */
1932 if (data
->cancelled
== 0)
1934 /* In case of error, no cleanup! */
1935 if (data
->rpc_status
!= 0 || !data
->rpc_done
)
1937 /* In case we need an open_confirm, no cleanup! */
1938 if (data
->o_res
.rflags
& NFS4_OPEN_RESULT_CONFIRM
)
1940 state
= nfs4_opendata_to_nfs4_state(data
);
1942 nfs4_close_state(state
, data
->o_arg
.fmode
);
1944 nfs4_opendata_put(data
);
1947 static const struct rpc_call_ops nfs4_open_ops
= {
1948 .rpc_call_prepare
= nfs4_open_prepare
,
1949 .rpc_call_done
= nfs4_open_done
,
1950 .rpc_release
= nfs4_open_release
,
1953 static int nfs4_run_open_task(struct nfs4_opendata
*data
, int isrecover
)
1955 struct inode
*dir
= d_inode(data
->dir
);
1956 struct nfs_server
*server
= NFS_SERVER(dir
);
1957 struct nfs_openargs
*o_arg
= &data
->o_arg
;
1958 struct nfs_openres
*o_res
= &data
->o_res
;
1959 struct rpc_task
*task
;
1960 struct rpc_message msg
= {
1961 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN
],
1964 .rpc_cred
= data
->owner
->so_cred
,
1966 struct rpc_task_setup task_setup_data
= {
1967 .rpc_client
= server
->client
,
1968 .rpc_message
= &msg
,
1969 .callback_ops
= &nfs4_open_ops
,
1970 .callback_data
= data
,
1971 .workqueue
= nfsiod_workqueue
,
1972 .flags
= RPC_TASK_ASYNC
,
1976 nfs4_init_sequence(&o_arg
->seq_args
, &o_res
->seq_res
, 1);
1977 kref_get(&data
->kref
);
1979 data
->rpc_status
= 0;
1980 data
->cancelled
= 0;
1981 data
->is_recover
= 0;
1983 nfs4_set_sequence_privileged(&o_arg
->seq_args
);
1984 data
->is_recover
= 1;
1986 task
= rpc_run_task(&task_setup_data
);
1988 return PTR_ERR(task
);
1989 status
= nfs4_wait_for_completion_rpc_task(task
);
1991 data
->cancelled
= 1;
1994 status
= data
->rpc_status
;
2000 static int _nfs4_recover_proc_open(struct nfs4_opendata
*data
)
2002 struct inode
*dir
= d_inode(data
->dir
);
2003 struct nfs_openres
*o_res
= &data
->o_res
;
2006 status
= nfs4_run_open_task(data
, 1);
2007 if (status
!= 0 || !data
->rpc_done
)
2010 nfs_fattr_map_and_free_names(NFS_SERVER(dir
), &data
->f_attr
);
2012 if (o_res
->rflags
& NFS4_OPEN_RESULT_CONFIRM
) {
2013 status
= _nfs4_proc_open_confirm(data
);
2022 * Additional permission checks in order to distinguish between an
2023 * open for read, and an open for execute. This works around the
2024 * fact that NFSv4 OPEN treats read and execute permissions as being
2026 * Note that in the non-execute case, we want to turn off permission
2027 * checking if we just created a new file (POSIX open() semantics).
2029 static int nfs4_opendata_access(struct rpc_cred
*cred
,
2030 struct nfs4_opendata
*opendata
,
2031 struct nfs4_state
*state
, fmode_t fmode
,
2034 struct nfs_access_entry cache
;
2037 /* access call failed or for some reason the server doesn't
2038 * support any access modes -- defer access call until later */
2039 if (opendata
->o_res
.access_supported
== 0)
2044 * Use openflags to check for exec, because fmode won't
2045 * always have FMODE_EXEC set when file open for exec.
2047 if (openflags
& __FMODE_EXEC
) {
2048 /* ONLY check for exec rights */
2050 } else if ((fmode
& FMODE_READ
) && !opendata
->file_created
)
2054 cache
.jiffies
= jiffies
;
2055 nfs_access_set_mask(&cache
, opendata
->o_res
.access_result
);
2056 nfs_access_add_cache(state
->inode
, &cache
);
2058 if ((mask
& ~cache
.mask
& (MAY_READ
| MAY_EXEC
)) == 0)
2061 /* even though OPEN succeeded, access is denied. Close the file */
2062 nfs4_close_state(state
, fmode
);
2067 * Note: On error, nfs4_proc_open will free the struct nfs4_opendata
2069 static int _nfs4_proc_open(struct nfs4_opendata
*data
)
2071 struct inode
*dir
= d_inode(data
->dir
);
2072 struct nfs_server
*server
= NFS_SERVER(dir
);
2073 struct nfs_openargs
*o_arg
= &data
->o_arg
;
2074 struct nfs_openres
*o_res
= &data
->o_res
;
2077 status
= nfs4_run_open_task(data
, 0);
2078 if (!data
->rpc_done
)
2081 if (status
== -NFS4ERR_BADNAME
&&
2082 !(o_arg
->open_flags
& O_CREAT
))
2087 nfs_fattr_map_and_free_names(server
, &data
->f_attr
);
2089 if (o_arg
->open_flags
& O_CREAT
) {
2090 update_changeattr(dir
, &o_res
->cinfo
);
2091 if (o_arg
->open_flags
& O_EXCL
)
2092 data
->file_created
= 1;
2093 else if (o_res
->cinfo
.before
!= o_res
->cinfo
.after
)
2094 data
->file_created
= 1;
2096 if ((o_res
->rflags
& NFS4_OPEN_RESULT_LOCKTYPE_POSIX
) == 0)
2097 server
->caps
&= ~NFS_CAP_POSIX_LOCK
;
2098 if(o_res
->rflags
& NFS4_OPEN_RESULT_CONFIRM
) {
2099 status
= _nfs4_proc_open_confirm(data
);
2103 if (!(o_res
->f_attr
->valid
& NFS_ATTR_FATTR
))
2104 nfs4_proc_getattr(server
, &o_res
->fh
, o_res
->f_attr
, o_res
->f_label
);
2108 static int nfs4_recover_expired_lease(struct nfs_server
*server
)
2110 return nfs4_client_recover_expired_lease(server
->nfs_client
);
2115 * reclaim state on the server after a network partition.
2116 * Assumes caller holds the appropriate lock
2118 static int _nfs4_open_expired(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
2120 struct nfs4_opendata
*opendata
;
2123 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
,
2124 NFS4_OPEN_CLAIM_FH
);
2125 if (IS_ERR(opendata
))
2126 return PTR_ERR(opendata
);
2127 ret
= nfs4_open_recover(opendata
, state
);
2129 d_drop(ctx
->dentry
);
2130 nfs4_opendata_put(opendata
);
2134 static int nfs4_do_open_expired(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
2136 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
2137 struct nfs4_exception exception
= { };
2141 err
= _nfs4_open_expired(ctx
, state
);
2142 trace_nfs4_open_expired(ctx
, 0, err
);
2143 if (nfs4_clear_cap_atomic_open_v1(server
, err
, &exception
))
2148 case -NFS4ERR_GRACE
:
2149 case -NFS4ERR_DELAY
:
2150 nfs4_handle_exception(server
, err
, &exception
);
2153 } while (exception
.retry
);
2158 static int nfs4_open_expired(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
2160 struct nfs_open_context
*ctx
;
2163 ctx
= nfs4_state_find_open_context(state
);
2166 ret
= nfs4_do_open_expired(ctx
, state
);
2167 put_nfs_open_context(ctx
);
2171 static void nfs_finish_clear_delegation_stateid(struct nfs4_state
*state
)
2173 nfs_remove_bad_delegation(state
->inode
);
2174 write_seqlock(&state
->seqlock
);
2175 nfs4_stateid_copy(&state
->stateid
, &state
->open_stateid
);
2176 write_sequnlock(&state
->seqlock
);
2177 clear_bit(NFS_DELEGATED_STATE
, &state
->flags
);
2180 static void nfs40_clear_delegation_stateid(struct nfs4_state
*state
)
2182 if (rcu_access_pointer(NFS_I(state
->inode
)->delegation
) != NULL
)
2183 nfs_finish_clear_delegation_stateid(state
);
2186 static int nfs40_open_expired(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
2188 /* NFSv4.0 doesn't allow for delegation recovery on open expire */
2189 nfs40_clear_delegation_stateid(state
);
2190 return nfs4_open_expired(sp
, state
);
2193 #if defined(CONFIG_NFS_V4_1)
2194 static void nfs41_check_delegation_stateid(struct nfs4_state
*state
)
2196 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
2197 nfs4_stateid stateid
;
2198 struct nfs_delegation
*delegation
;
2199 struct rpc_cred
*cred
;
2202 /* Get the delegation credential for use by test/free_stateid */
2204 delegation
= rcu_dereference(NFS_I(state
->inode
)->delegation
);
2205 if (delegation
== NULL
) {
2210 nfs4_stateid_copy(&stateid
, &delegation
->stateid
);
2211 cred
= get_rpccred(delegation
->cred
);
2213 status
= nfs41_test_stateid(server
, &stateid
, cred
);
2214 trace_nfs4_test_delegation_stateid(state
, NULL
, status
);
2216 if (status
!= NFS_OK
) {
2217 /* Free the stateid unless the server explicitly
2218 * informs us the stateid is unrecognized. */
2219 if (status
!= -NFS4ERR_BAD_STATEID
)
2220 nfs41_free_stateid(server
, &stateid
, cred
);
2221 nfs_finish_clear_delegation_stateid(state
);
2228 * nfs41_check_open_stateid - possibly free an open stateid
2230 * @state: NFSv4 state for an inode
2232 * Returns NFS_OK if recovery for this stateid is now finished.
2233 * Otherwise a negative NFS4ERR value is returned.
2235 static int nfs41_check_open_stateid(struct nfs4_state
*state
)
2237 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
2238 nfs4_stateid
*stateid
= &state
->open_stateid
;
2239 struct rpc_cred
*cred
= state
->owner
->so_cred
;
2242 /* If a state reset has been done, test_stateid is unneeded */
2243 if ((test_bit(NFS_O_RDONLY_STATE
, &state
->flags
) == 0) &&
2244 (test_bit(NFS_O_WRONLY_STATE
, &state
->flags
) == 0) &&
2245 (test_bit(NFS_O_RDWR_STATE
, &state
->flags
) == 0))
2246 return -NFS4ERR_BAD_STATEID
;
2248 status
= nfs41_test_stateid(server
, stateid
, cred
);
2249 trace_nfs4_test_open_stateid(state
, NULL
, status
);
2250 if (status
!= NFS_OK
) {
2251 /* Free the stateid unless the server explicitly
2252 * informs us the stateid is unrecognized. */
2253 if (status
!= -NFS4ERR_BAD_STATEID
)
2254 nfs41_free_stateid(server
, stateid
, cred
);
2256 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
2257 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
2258 clear_bit(NFS_O_RDWR_STATE
, &state
->flags
);
2259 clear_bit(NFS_OPEN_STATE
, &state
->flags
);
2264 static int nfs41_open_expired(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
2268 nfs41_check_delegation_stateid(state
);
2269 status
= nfs41_check_open_stateid(state
);
2270 if (status
!= NFS_OK
)
2271 status
= nfs4_open_expired(sp
, state
);
2277 * on an EXCLUSIVE create, the server should send back a bitmask with FATTR4-*
2278 * fields corresponding to attributes that were used to store the verifier.
2279 * Make sure we clobber those fields in the later setattr call
2281 static inline void nfs4_exclusive_attrset(struct nfs4_opendata
*opendata
, struct iattr
*sattr
)
2283 if ((opendata
->o_res
.attrset
[1] & FATTR4_WORD1_TIME_ACCESS
) &&
2284 !(sattr
->ia_valid
& ATTR_ATIME_SET
))
2285 sattr
->ia_valid
|= ATTR_ATIME
;
2287 if ((opendata
->o_res
.attrset
[1] & FATTR4_WORD1_TIME_MODIFY
) &&
2288 !(sattr
->ia_valid
& ATTR_MTIME_SET
))
2289 sattr
->ia_valid
|= ATTR_MTIME
;
2292 static int _nfs4_open_and_get_state(struct nfs4_opendata
*opendata
,
2295 struct nfs_open_context
*ctx
)
2297 struct nfs4_state_owner
*sp
= opendata
->owner
;
2298 struct nfs_server
*server
= sp
->so_server
;
2299 struct dentry
*dentry
;
2300 struct nfs4_state
*state
;
2304 seq
= raw_seqcount_begin(&sp
->so_reclaim_seqcount
);
2306 ret
= _nfs4_proc_open(opendata
);
2310 state
= nfs4_opendata_to_nfs4_state(opendata
);
2311 ret
= PTR_ERR(state
);
2314 if (server
->caps
& NFS_CAP_POSIX_LOCK
)
2315 set_bit(NFS_STATE_POSIX_LOCKS
, &state
->flags
);
2317 dentry
= opendata
->dentry
;
2318 if (d_really_is_negative(dentry
)) {
2319 /* FIXME: Is this d_drop() ever needed? */
2321 dentry
= d_add_unique(dentry
, igrab(state
->inode
));
2322 if (dentry
== NULL
) {
2323 dentry
= opendata
->dentry
;
2324 } else if (dentry
!= ctx
->dentry
) {
2326 ctx
->dentry
= dget(dentry
);
2328 nfs_set_verifier(dentry
,
2329 nfs_save_change_attribute(d_inode(opendata
->dir
)));
2332 ret
= nfs4_opendata_access(sp
->so_cred
, opendata
, state
, fmode
, flags
);
2337 if (d_inode(dentry
) == state
->inode
) {
2338 nfs_inode_attach_open_context(ctx
);
2339 if (read_seqcount_retry(&sp
->so_reclaim_seqcount
, seq
))
2340 nfs4_schedule_stateid_recovery(server
, state
);
2347 * Returns a referenced nfs4_state
2349 static int _nfs4_do_open(struct inode
*dir
,
2350 struct nfs_open_context
*ctx
,
2352 struct iattr
*sattr
,
2353 struct nfs4_label
*label
,
2356 struct nfs4_state_owner
*sp
;
2357 struct nfs4_state
*state
= NULL
;
2358 struct nfs_server
*server
= NFS_SERVER(dir
);
2359 struct nfs4_opendata
*opendata
;
2360 struct dentry
*dentry
= ctx
->dentry
;
2361 struct rpc_cred
*cred
= ctx
->cred
;
2362 struct nfs4_threshold
**ctx_th
= &ctx
->mdsthreshold
;
2363 fmode_t fmode
= ctx
->mode
& (FMODE_READ
|FMODE_WRITE
|FMODE_EXEC
);
2364 enum open_claim_type4 claim
= NFS4_OPEN_CLAIM_NULL
;
2365 struct nfs4_label
*olabel
= NULL
;
2368 /* Protect against reboot recovery conflicts */
2370 sp
= nfs4_get_state_owner(server
, cred
, GFP_KERNEL
);
2372 dprintk("nfs4_do_open: nfs4_get_state_owner failed!\n");
2375 status
= nfs4_recover_expired_lease(server
);
2377 goto err_put_state_owner
;
2378 if (d_really_is_positive(dentry
))
2379 nfs4_return_incompatible_delegation(d_inode(dentry
), fmode
);
2381 if (d_really_is_positive(dentry
))
2382 claim
= NFS4_OPEN_CLAIM_FH
;
2383 opendata
= nfs4_opendata_alloc(dentry
, sp
, fmode
, flags
, sattr
,
2384 label
, claim
, GFP_KERNEL
);
2385 if (opendata
== NULL
)
2386 goto err_put_state_owner
;
2389 olabel
= nfs4_label_alloc(server
, GFP_KERNEL
);
2390 if (IS_ERR(olabel
)) {
2391 status
= PTR_ERR(olabel
);
2392 goto err_opendata_put
;
2396 if (server
->attr_bitmask
[2] & FATTR4_WORD2_MDSTHRESHOLD
) {
2397 if (!opendata
->f_attr
.mdsthreshold
) {
2398 opendata
->f_attr
.mdsthreshold
= pnfs_mdsthreshold_alloc();
2399 if (!opendata
->f_attr
.mdsthreshold
)
2400 goto err_free_label
;
2402 opendata
->o_arg
.open_bitmap
= &nfs4_pnfs_open_bitmap
[0];
2404 if (d_really_is_positive(dentry
))
2405 opendata
->state
= nfs4_get_open_state(d_inode(dentry
), sp
);
2407 status
= _nfs4_open_and_get_state(opendata
, fmode
, flags
, ctx
);
2409 goto err_free_label
;
2412 if ((opendata
->o_arg
.open_flags
& O_EXCL
) &&
2413 (opendata
->o_arg
.createmode
!= NFS4_CREATE_GUARDED
)) {
2414 nfs4_exclusive_attrset(opendata
, sattr
);
2416 nfs_fattr_init(opendata
->o_res
.f_attr
);
2417 status
= nfs4_do_setattr(state
->inode
, cred
,
2418 opendata
->o_res
.f_attr
, sattr
,
2419 state
, label
, olabel
);
2421 nfs_setattr_update_inode(state
->inode
, sattr
,
2422 opendata
->o_res
.f_attr
);
2423 nfs_setsecurity(state
->inode
, opendata
->o_res
.f_attr
, olabel
);
2426 if (opendata
->file_created
)
2427 *opened
|= FILE_CREATED
;
2429 if (pnfs_use_threshold(ctx_th
, opendata
->f_attr
.mdsthreshold
, server
)) {
2430 *ctx_th
= opendata
->f_attr
.mdsthreshold
;
2431 opendata
->f_attr
.mdsthreshold
= NULL
;
2434 nfs4_label_free(olabel
);
2436 nfs4_opendata_put(opendata
);
2437 nfs4_put_state_owner(sp
);
2440 nfs4_label_free(olabel
);
2442 nfs4_opendata_put(opendata
);
2443 err_put_state_owner
:
2444 nfs4_put_state_owner(sp
);
2450 static struct nfs4_state
*nfs4_do_open(struct inode
*dir
,
2451 struct nfs_open_context
*ctx
,
2453 struct iattr
*sattr
,
2454 struct nfs4_label
*label
,
2457 struct nfs_server
*server
= NFS_SERVER(dir
);
2458 struct nfs4_exception exception
= { };
2459 struct nfs4_state
*res
;
2463 status
= _nfs4_do_open(dir
, ctx
, flags
, sattr
, label
, opened
);
2465 trace_nfs4_open_file(ctx
, flags
, status
);
2468 /* NOTE: BAD_SEQID means the server and client disagree about the
2469 * book-keeping w.r.t. state-changing operations
2470 * (OPEN/CLOSE/LOCK/LOCKU...)
2471 * It is actually a sign of a bug on the client or on the server.
2473 * If we receive a BAD_SEQID error in the particular case of
2474 * doing an OPEN, we assume that nfs_increment_open_seqid() will
2475 * have unhashed the old state_owner for us, and that we can
2476 * therefore safely retry using a new one. We should still warn
2477 * the user though...
2479 if (status
== -NFS4ERR_BAD_SEQID
) {
2480 pr_warn_ratelimited("NFS: v4 server %s "
2481 " returned a bad sequence-id error!\n",
2482 NFS_SERVER(dir
)->nfs_client
->cl_hostname
);
2483 exception
.retry
= 1;
2487 * BAD_STATEID on OPEN means that the server cancelled our
2488 * state before it received the OPEN_CONFIRM.
2489 * Recover by retrying the request as per the discussion
2490 * on Page 181 of RFC3530.
2492 if (status
== -NFS4ERR_BAD_STATEID
) {
2493 exception
.retry
= 1;
2496 if (status
== -EAGAIN
) {
2497 /* We must have found a delegation */
2498 exception
.retry
= 1;
2501 if (nfs4_clear_cap_atomic_open_v1(server
, status
, &exception
))
2503 res
= ERR_PTR(nfs4_handle_exception(server
,
2504 status
, &exception
));
2505 } while (exception
.retry
);
2509 static int _nfs4_do_setattr(struct inode
*inode
, struct rpc_cred
*cred
,
2510 struct nfs_fattr
*fattr
, struct iattr
*sattr
,
2511 struct nfs4_state
*state
, struct nfs4_label
*ilabel
,
2512 struct nfs4_label
*olabel
)
2514 struct nfs_server
*server
= NFS_SERVER(inode
);
2515 struct nfs_setattrargs arg
= {
2516 .fh
= NFS_FH(inode
),
2519 .bitmask
= server
->attr_bitmask
,
2522 struct nfs_setattrres res
= {
2527 struct rpc_message msg
= {
2528 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETATTR
],
2533 unsigned long timestamp
= jiffies
;
2538 arg
.bitmask
= nfs4_bitmask(server
, ilabel
);
2540 arg
.bitmask
= nfs4_bitmask(server
, olabel
);
2542 nfs_fattr_init(fattr
);
2544 /* Servers should only apply open mode checks for file size changes */
2545 truncate
= (sattr
->ia_valid
& ATTR_SIZE
) ? true : false;
2546 fmode
= truncate
? FMODE_WRITE
: FMODE_READ
;
2548 if (nfs4_copy_delegation_stateid(&arg
.stateid
, inode
, fmode
)) {
2549 /* Use that stateid */
2550 } else if (truncate
&& state
!= NULL
) {
2551 struct nfs_lockowner lockowner
= {
2552 .l_owner
= current
->files
,
2553 .l_pid
= current
->tgid
,
2555 if (!nfs4_valid_open_stateid(state
))
2557 if (nfs4_select_rw_stateid(&arg
.stateid
, state
, FMODE_WRITE
,
2558 &lockowner
) == -EIO
)
2561 nfs4_stateid_copy(&arg
.stateid
, &zero_stateid
);
2563 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
2564 if (status
== 0 && state
!= NULL
)
2565 renew_lease(server
, timestamp
);
2569 static int nfs4_do_setattr(struct inode
*inode
, struct rpc_cred
*cred
,
2570 struct nfs_fattr
*fattr
, struct iattr
*sattr
,
2571 struct nfs4_state
*state
, struct nfs4_label
*ilabel
,
2572 struct nfs4_label
*olabel
)
2574 struct nfs_server
*server
= NFS_SERVER(inode
);
2575 struct nfs4_exception exception
= {
2581 err
= _nfs4_do_setattr(inode
, cred
, fattr
, sattr
, state
, ilabel
, olabel
);
2582 trace_nfs4_setattr(inode
, err
);
2584 case -NFS4ERR_OPENMODE
:
2585 if (!(sattr
->ia_valid
& ATTR_SIZE
)) {
2586 pr_warn_once("NFSv4: server %s is incorrectly "
2587 "applying open mode checks to "
2588 "a SETATTR that is not "
2589 "changing file size.\n",
2590 server
->nfs_client
->cl_hostname
);
2592 if (state
&& !(state
->state
& FMODE_WRITE
)) {
2594 if (sattr
->ia_valid
& ATTR_OPEN
)
2599 err
= nfs4_handle_exception(server
, err
, &exception
);
2600 } while (exception
.retry
);
2605 struct nfs4_closedata
{
2606 struct inode
*inode
;
2607 struct nfs4_state
*state
;
2608 struct nfs_closeargs arg
;
2609 struct nfs_closeres res
;
2610 struct nfs_fattr fattr
;
2611 unsigned long timestamp
;
2616 static void nfs4_free_closedata(void *data
)
2618 struct nfs4_closedata
*calldata
= data
;
2619 struct nfs4_state_owner
*sp
= calldata
->state
->owner
;
2620 struct super_block
*sb
= calldata
->state
->inode
->i_sb
;
2623 pnfs_roc_release(calldata
->state
->inode
);
2624 nfs4_put_open_state(calldata
->state
);
2625 nfs_free_seqid(calldata
->arg
.seqid
);
2626 nfs4_put_state_owner(sp
);
2627 nfs_sb_deactive(sb
);
2631 static void nfs4_close_done(struct rpc_task
*task
, void *data
)
2633 struct nfs4_closedata
*calldata
= data
;
2634 struct nfs4_state
*state
= calldata
->state
;
2635 struct nfs_server
*server
= NFS_SERVER(calldata
->inode
);
2636 nfs4_stateid
*res_stateid
= NULL
;
2638 dprintk("%s: begin!\n", __func__
);
2639 if (!nfs4_sequence_done(task
, &calldata
->res
.seq_res
))
2641 trace_nfs4_close(state
, &calldata
->arg
, &calldata
->res
, task
->tk_status
);
2642 /* hmm. we are done with the inode, and in the process of freeing
2643 * the state_owner. we keep this around to process errors
2645 switch (task
->tk_status
) {
2647 res_stateid
= &calldata
->res
.stateid
;
2648 if (calldata
->arg
.fmode
== 0 && calldata
->roc
)
2649 pnfs_roc_set_barrier(state
->inode
,
2650 calldata
->roc_barrier
);
2651 renew_lease(server
, calldata
->timestamp
);
2653 case -NFS4ERR_ADMIN_REVOKED
:
2654 case -NFS4ERR_STALE_STATEID
:
2655 case -NFS4ERR_OLD_STATEID
:
2656 case -NFS4ERR_BAD_STATEID
:
2657 case -NFS4ERR_EXPIRED
:
2658 if (!nfs4_stateid_match(&calldata
->arg
.stateid
,
2659 &state
->open_stateid
)) {
2660 rpc_restart_call_prepare(task
);
2663 if (calldata
->arg
.fmode
== 0)
2666 if (nfs4_async_handle_error(task
, server
, state
, NULL
) == -EAGAIN
) {
2667 rpc_restart_call_prepare(task
);
2671 nfs_clear_open_stateid(state
, res_stateid
, calldata
->arg
.fmode
);
2673 nfs_release_seqid(calldata
->arg
.seqid
);
2674 nfs_refresh_inode(calldata
->inode
, calldata
->res
.fattr
);
2675 dprintk("%s: done, ret = %d!\n", __func__
, task
->tk_status
);
2678 static void nfs4_close_prepare(struct rpc_task
*task
, void *data
)
2680 struct nfs4_closedata
*calldata
= data
;
2681 struct nfs4_state
*state
= calldata
->state
;
2682 struct inode
*inode
= calldata
->inode
;
2683 bool is_rdonly
, is_wronly
, is_rdwr
;
2686 dprintk("%s: begin!\n", __func__
);
2687 if (nfs_wait_on_sequence(calldata
->arg
.seqid
, task
) != 0)
2690 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_DOWNGRADE
];
2691 spin_lock(&state
->owner
->so_lock
);
2692 is_rdwr
= test_bit(NFS_O_RDWR_STATE
, &state
->flags
);
2693 is_rdonly
= test_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
2694 is_wronly
= test_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
2695 nfs4_stateid_copy(&calldata
->arg
.stateid
, &state
->open_stateid
);
2696 /* Calculate the change in open mode */
2697 calldata
->arg
.fmode
= 0;
2698 if (state
->n_rdwr
== 0) {
2699 if (state
->n_rdonly
== 0)
2700 call_close
|= is_rdonly
;
2702 calldata
->arg
.fmode
|= FMODE_READ
;
2703 if (state
->n_wronly
== 0)
2704 call_close
|= is_wronly
;
2706 calldata
->arg
.fmode
|= FMODE_WRITE
;
2708 calldata
->arg
.fmode
|= FMODE_READ
|FMODE_WRITE
;
2710 if (calldata
->arg
.fmode
== 0)
2711 call_close
|= is_rdwr
;
2713 if (!nfs4_valid_open_stateid(state
))
2715 spin_unlock(&state
->owner
->so_lock
);
2718 /* Note: exit _without_ calling nfs4_close_done */
2722 if (calldata
->arg
.fmode
== 0) {
2723 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CLOSE
];
2724 if (calldata
->roc
&&
2725 pnfs_roc_drain(inode
, &calldata
->roc_barrier
, task
)) {
2726 nfs_release_seqid(calldata
->arg
.seqid
);
2730 calldata
->arg
.share_access
=
2731 nfs4_map_atomic_open_share(NFS_SERVER(inode
),
2732 calldata
->arg
.fmode
, 0);
2734 nfs_fattr_init(calldata
->res
.fattr
);
2735 calldata
->timestamp
= jiffies
;
2736 if (nfs4_setup_sequence(NFS_SERVER(inode
),
2737 &calldata
->arg
.seq_args
,
2738 &calldata
->res
.seq_res
,
2740 nfs_release_seqid(calldata
->arg
.seqid
);
2741 dprintk("%s: done!\n", __func__
);
2744 task
->tk_action
= NULL
;
2746 nfs4_sequence_done(task
, &calldata
->res
.seq_res
);
2749 static const struct rpc_call_ops nfs4_close_ops
= {
2750 .rpc_call_prepare
= nfs4_close_prepare
,
2751 .rpc_call_done
= nfs4_close_done
,
2752 .rpc_release
= nfs4_free_closedata
,
2755 static bool nfs4_roc(struct inode
*inode
)
2757 if (!nfs_have_layout(inode
))
2759 return pnfs_roc(inode
);
2763 * It is possible for data to be read/written from a mem-mapped file
2764 * after the sys_close call (which hits the vfs layer as a flush).
2765 * This means that we can't safely call nfsv4 close on a file until
2766 * the inode is cleared. This in turn means that we are not good
2767 * NFSv4 citizens - we do not indicate to the server to update the file's
2768 * share state even when we are done with one of the three share
2769 * stateid's in the inode.
2771 * NOTE: Caller must be holding the sp->so_owner semaphore!
2773 int nfs4_do_close(struct nfs4_state
*state
, gfp_t gfp_mask
, int wait
)
2775 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
2776 struct nfs_seqid
*(*alloc_seqid
)(struct nfs_seqid_counter
*, gfp_t
);
2777 struct nfs4_closedata
*calldata
;
2778 struct nfs4_state_owner
*sp
= state
->owner
;
2779 struct rpc_task
*task
;
2780 struct rpc_message msg
= {
2781 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CLOSE
],
2782 .rpc_cred
= state
->owner
->so_cred
,
2784 struct rpc_task_setup task_setup_data
= {
2785 .rpc_client
= server
->client
,
2786 .rpc_message
= &msg
,
2787 .callback_ops
= &nfs4_close_ops
,
2788 .workqueue
= nfsiod_workqueue
,
2789 .flags
= RPC_TASK_ASYNC
,
2791 int status
= -ENOMEM
;
2793 nfs4_state_protect(server
->nfs_client
, NFS_SP4_MACH_CRED_CLEANUP
,
2794 &task_setup_data
.rpc_client
, &msg
);
2796 calldata
= kzalloc(sizeof(*calldata
), gfp_mask
);
2797 if (calldata
== NULL
)
2799 nfs4_init_sequence(&calldata
->arg
.seq_args
, &calldata
->res
.seq_res
, 1);
2800 calldata
->inode
= state
->inode
;
2801 calldata
->state
= state
;
2802 calldata
->arg
.fh
= NFS_FH(state
->inode
);
2803 /* Serialization for the sequence id */
2804 alloc_seqid
= server
->nfs_client
->cl_mvops
->alloc_seqid
;
2805 calldata
->arg
.seqid
= alloc_seqid(&state
->owner
->so_seqid
, gfp_mask
);
2806 if (IS_ERR(calldata
->arg
.seqid
))
2807 goto out_free_calldata
;
2808 calldata
->arg
.fmode
= 0;
2809 calldata
->arg
.bitmask
= server
->cache_consistency_bitmask
;
2810 calldata
->res
.fattr
= &calldata
->fattr
;
2811 calldata
->res
.seqid
= calldata
->arg
.seqid
;
2812 calldata
->res
.server
= server
;
2813 calldata
->roc
= nfs4_roc(state
->inode
);
2814 nfs_sb_active(calldata
->inode
->i_sb
);
2816 msg
.rpc_argp
= &calldata
->arg
;
2817 msg
.rpc_resp
= &calldata
->res
;
2818 task_setup_data
.callback_data
= calldata
;
2819 task
= rpc_run_task(&task_setup_data
);
2821 return PTR_ERR(task
);
2824 status
= rpc_wait_for_completion_task(task
);
2830 nfs4_put_open_state(state
);
2831 nfs4_put_state_owner(sp
);
2835 static struct inode
*
2836 nfs4_atomic_open(struct inode
*dir
, struct nfs_open_context
*ctx
,
2837 int open_flags
, struct iattr
*attr
, int *opened
)
2839 struct nfs4_state
*state
;
2840 struct nfs4_label l
= {0, 0, 0, NULL
}, *label
= NULL
;
2842 label
= nfs4_label_init_security(dir
, ctx
->dentry
, attr
, &l
);
2844 /* Protect against concurrent sillydeletes */
2845 state
= nfs4_do_open(dir
, ctx
, open_flags
, attr
, label
, opened
);
2847 nfs4_label_release_security(label
);
2850 return ERR_CAST(state
);
2851 return state
->inode
;
2854 static void nfs4_close_context(struct nfs_open_context
*ctx
, int is_sync
)
2856 if (ctx
->state
== NULL
)
2859 nfs4_close_sync(ctx
->state
, ctx
->mode
);
2861 nfs4_close_state(ctx
->state
, ctx
->mode
);
2864 #define FATTR4_WORD1_NFS40_MASK (2*FATTR4_WORD1_MOUNTED_ON_FILEID - 1UL)
2865 #define FATTR4_WORD2_NFS41_MASK (2*FATTR4_WORD2_SUPPATTR_EXCLCREAT - 1UL)
2866 #define FATTR4_WORD2_NFS42_MASK (2*FATTR4_WORD2_SECURITY_LABEL - 1UL)
2868 static int _nfs4_server_capabilities(struct nfs_server
*server
, struct nfs_fh
*fhandle
)
2870 struct nfs4_server_caps_arg args
= {
2873 struct nfs4_server_caps_res res
= {};
2874 struct rpc_message msg
= {
2875 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SERVER_CAPS
],
2881 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2883 /* Sanity check the server answers */
2884 switch (server
->nfs_client
->cl_minorversion
) {
2886 res
.attr_bitmask
[1] &= FATTR4_WORD1_NFS40_MASK
;
2887 res
.attr_bitmask
[2] = 0;
2890 res
.attr_bitmask
[2] &= FATTR4_WORD2_NFS41_MASK
;
2893 res
.attr_bitmask
[2] &= FATTR4_WORD2_NFS42_MASK
;
2895 memcpy(server
->attr_bitmask
, res
.attr_bitmask
, sizeof(server
->attr_bitmask
));
2896 server
->caps
&= ~(NFS_CAP_ACLS
|NFS_CAP_HARDLINKS
|
2897 NFS_CAP_SYMLINKS
|NFS_CAP_FILEID
|
2898 NFS_CAP_MODE
|NFS_CAP_NLINK
|NFS_CAP_OWNER
|
2899 NFS_CAP_OWNER_GROUP
|NFS_CAP_ATIME
|
2900 NFS_CAP_CTIME
|NFS_CAP_MTIME
|
2901 NFS_CAP_SECURITY_LABEL
);
2902 if (res
.attr_bitmask
[0] & FATTR4_WORD0_ACL
&&
2903 res
.acl_bitmask
& ACL4_SUPPORT_ALLOW_ACL
)
2904 server
->caps
|= NFS_CAP_ACLS
;
2905 if (res
.has_links
!= 0)
2906 server
->caps
|= NFS_CAP_HARDLINKS
;
2907 if (res
.has_symlinks
!= 0)
2908 server
->caps
|= NFS_CAP_SYMLINKS
;
2909 if (res
.attr_bitmask
[0] & FATTR4_WORD0_FILEID
)
2910 server
->caps
|= NFS_CAP_FILEID
;
2911 if (res
.attr_bitmask
[1] & FATTR4_WORD1_MODE
)
2912 server
->caps
|= NFS_CAP_MODE
;
2913 if (res
.attr_bitmask
[1] & FATTR4_WORD1_NUMLINKS
)
2914 server
->caps
|= NFS_CAP_NLINK
;
2915 if (res
.attr_bitmask
[1] & FATTR4_WORD1_OWNER
)
2916 server
->caps
|= NFS_CAP_OWNER
;
2917 if (res
.attr_bitmask
[1] & FATTR4_WORD1_OWNER_GROUP
)
2918 server
->caps
|= NFS_CAP_OWNER_GROUP
;
2919 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_ACCESS
)
2920 server
->caps
|= NFS_CAP_ATIME
;
2921 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_METADATA
)
2922 server
->caps
|= NFS_CAP_CTIME
;
2923 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_MODIFY
)
2924 server
->caps
|= NFS_CAP_MTIME
;
2925 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
2926 if (res
.attr_bitmask
[2] & FATTR4_WORD2_SECURITY_LABEL
)
2927 server
->caps
|= NFS_CAP_SECURITY_LABEL
;
2929 memcpy(server
->attr_bitmask_nl
, res
.attr_bitmask
,
2930 sizeof(server
->attr_bitmask
));
2931 server
->attr_bitmask_nl
[2] &= ~FATTR4_WORD2_SECURITY_LABEL
;
2933 memcpy(server
->cache_consistency_bitmask
, res
.attr_bitmask
, sizeof(server
->cache_consistency_bitmask
));
2934 server
->cache_consistency_bitmask
[0] &= FATTR4_WORD0_CHANGE
|FATTR4_WORD0_SIZE
;
2935 server
->cache_consistency_bitmask
[1] &= FATTR4_WORD1_TIME_METADATA
|FATTR4_WORD1_TIME_MODIFY
;
2936 server
->cache_consistency_bitmask
[2] = 0;
2937 server
->acl_bitmask
= res
.acl_bitmask
;
2938 server
->fh_expire_type
= res
.fh_expire_type
;
2944 int nfs4_server_capabilities(struct nfs_server
*server
, struct nfs_fh
*fhandle
)
2946 struct nfs4_exception exception
= { };
2949 err
= nfs4_handle_exception(server
,
2950 _nfs4_server_capabilities(server
, fhandle
),
2952 } while (exception
.retry
);
2956 static int _nfs4_lookup_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2957 struct nfs_fsinfo
*info
)
2960 struct nfs4_lookup_root_arg args
= {
2963 struct nfs4_lookup_res res
= {
2965 .fattr
= info
->fattr
,
2968 struct rpc_message msg
= {
2969 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOOKUP_ROOT
],
2974 bitmask
[0] = nfs4_fattr_bitmap
[0];
2975 bitmask
[1] = nfs4_fattr_bitmap
[1];
2977 * Process the label in the upcoming getfattr
2979 bitmask
[2] = nfs4_fattr_bitmap
[2] & ~FATTR4_WORD2_SECURITY_LABEL
;
2981 nfs_fattr_init(info
->fattr
);
2982 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2985 static int nfs4_lookup_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2986 struct nfs_fsinfo
*info
)
2988 struct nfs4_exception exception
= { };
2991 err
= _nfs4_lookup_root(server
, fhandle
, info
);
2992 trace_nfs4_lookup_root(server
, fhandle
, info
->fattr
, err
);
2995 case -NFS4ERR_WRONGSEC
:
2998 err
= nfs4_handle_exception(server
, err
, &exception
);
3000 } while (exception
.retry
);
3005 static int nfs4_lookup_root_sec(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3006 struct nfs_fsinfo
*info
, rpc_authflavor_t flavor
)
3008 struct rpc_auth_create_args auth_args
= {
3009 .pseudoflavor
= flavor
,
3011 struct rpc_auth
*auth
;
3014 auth
= rpcauth_create(&auth_args
, server
->client
);
3019 ret
= nfs4_lookup_root(server
, fhandle
, info
);
3025 * Retry pseudoroot lookup with various security flavors. We do this when:
3027 * NFSv4.0: the PUTROOTFH operation returns NFS4ERR_WRONGSEC
3028 * NFSv4.1: the server does not support the SECINFO_NO_NAME operation
3030 * Returns zero on success, or a negative NFS4ERR value, or a
3031 * negative errno value.
3033 static int nfs4_find_root_sec(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3034 struct nfs_fsinfo
*info
)
3036 /* Per 3530bis 15.33.5 */
3037 static const rpc_authflavor_t flav_array
[] = {
3041 RPC_AUTH_UNIX
, /* courtesy */
3044 int status
= -EPERM
;
3047 if (server
->auth_info
.flavor_len
> 0) {
3048 /* try each flavor specified by user */
3049 for (i
= 0; i
< server
->auth_info
.flavor_len
; i
++) {
3050 status
= nfs4_lookup_root_sec(server
, fhandle
, info
,
3051 server
->auth_info
.flavors
[i
]);
3052 if (status
== -NFS4ERR_WRONGSEC
|| status
== -EACCES
)
3057 /* no flavors specified by user, try default list */
3058 for (i
= 0; i
< ARRAY_SIZE(flav_array
); i
++) {
3059 status
= nfs4_lookup_root_sec(server
, fhandle
, info
,
3061 if (status
== -NFS4ERR_WRONGSEC
|| status
== -EACCES
)
3068 * -EACCESS could mean that the user doesn't have correct permissions
3069 * to access the mount. It could also mean that we tried to mount
3070 * with a gss auth flavor, but rpc.gssd isn't running. Either way,
3071 * existing mount programs don't handle -EACCES very well so it should
3072 * be mapped to -EPERM instead.
3074 if (status
== -EACCES
)
3079 static int nfs4_do_find_root_sec(struct nfs_server
*server
,
3080 struct nfs_fh
*fhandle
, struct nfs_fsinfo
*info
)
3082 int mv
= server
->nfs_client
->cl_minorversion
;
3083 return nfs_v4_minor_ops
[mv
]->find_root_sec(server
, fhandle
, info
);
3087 * nfs4_proc_get_rootfh - get file handle for server's pseudoroot
3088 * @server: initialized nfs_server handle
3089 * @fhandle: we fill in the pseudo-fs root file handle
3090 * @info: we fill in an FSINFO struct
3091 * @auth_probe: probe the auth flavours
3093 * Returns zero on success, or a negative errno.
3095 int nfs4_proc_get_rootfh(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3096 struct nfs_fsinfo
*info
,
3102 status
= nfs4_lookup_root(server
, fhandle
, info
);
3104 if (auth_probe
|| status
== NFS4ERR_WRONGSEC
)
3105 status
= nfs4_do_find_root_sec(server
, fhandle
, info
);
3108 status
= nfs4_server_capabilities(server
, fhandle
);
3110 status
= nfs4_do_fsinfo(server
, fhandle
, info
);
3112 return nfs4_map_errors(status
);
3115 static int nfs4_proc_get_root(struct nfs_server
*server
, struct nfs_fh
*mntfh
,
3116 struct nfs_fsinfo
*info
)
3119 struct nfs_fattr
*fattr
= info
->fattr
;
3120 struct nfs4_label
*label
= NULL
;
3122 error
= nfs4_server_capabilities(server
, mntfh
);
3124 dprintk("nfs4_get_root: getcaps error = %d\n", -error
);
3128 label
= nfs4_label_alloc(server
, GFP_KERNEL
);
3130 return PTR_ERR(label
);
3132 error
= nfs4_proc_getattr(server
, mntfh
, fattr
, label
);
3134 dprintk("nfs4_get_root: getattr error = %d\n", -error
);
3135 goto err_free_label
;
3138 if (fattr
->valid
& NFS_ATTR_FATTR_FSID
&&
3139 !nfs_fsid_equal(&server
->fsid
, &fattr
->fsid
))
3140 memcpy(&server
->fsid
, &fattr
->fsid
, sizeof(server
->fsid
));
3143 nfs4_label_free(label
);
3149 * Get locations and (maybe) other attributes of a referral.
3150 * Note that we'll actually follow the referral later when
3151 * we detect fsid mismatch in inode revalidation
3153 static int nfs4_get_referral(struct rpc_clnt
*client
, struct inode
*dir
,
3154 const struct qstr
*name
, struct nfs_fattr
*fattr
,
3155 struct nfs_fh
*fhandle
)
3157 int status
= -ENOMEM
;
3158 struct page
*page
= NULL
;
3159 struct nfs4_fs_locations
*locations
= NULL
;
3161 page
= alloc_page(GFP_KERNEL
);
3164 locations
= kmalloc(sizeof(struct nfs4_fs_locations
), GFP_KERNEL
);
3165 if (locations
== NULL
)
3168 status
= nfs4_proc_fs_locations(client
, dir
, name
, locations
, page
);
3173 * If the fsid didn't change, this is a migration event, not a
3174 * referral. Cause us to drop into the exception handler, which
3175 * will kick off migration recovery.
3177 if (nfs_fsid_equal(&NFS_SERVER(dir
)->fsid
, &locations
->fattr
.fsid
)) {
3178 dprintk("%s: server did not return a different fsid for"
3179 " a referral at %s\n", __func__
, name
->name
);
3180 status
= -NFS4ERR_MOVED
;
3183 /* Fixup attributes for the nfs_lookup() call to nfs_fhget() */
3184 nfs_fixup_referral_attributes(&locations
->fattr
);
3186 /* replace the lookup nfs_fattr with the locations nfs_fattr */
3187 memcpy(fattr
, &locations
->fattr
, sizeof(struct nfs_fattr
));
3188 memset(fhandle
, 0, sizeof(struct nfs_fh
));
3196 static int _nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3197 struct nfs_fattr
*fattr
, struct nfs4_label
*label
)
3199 struct nfs4_getattr_arg args
= {
3201 .bitmask
= server
->attr_bitmask
,
3203 struct nfs4_getattr_res res
= {
3208 struct rpc_message msg
= {
3209 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETATTR
],
3214 args
.bitmask
= nfs4_bitmask(server
, label
);
3216 nfs_fattr_init(fattr
);
3217 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3220 static int nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3221 struct nfs_fattr
*fattr
, struct nfs4_label
*label
)
3223 struct nfs4_exception exception
= { };
3226 err
= _nfs4_proc_getattr(server
, fhandle
, fattr
, label
);
3227 trace_nfs4_getattr(server
, fhandle
, fattr
, err
);
3228 err
= nfs4_handle_exception(server
, err
,
3230 } while (exception
.retry
);
3235 * The file is not closed if it is opened due to the a request to change
3236 * the size of the file. The open call will not be needed once the
3237 * VFS layer lookup-intents are implemented.
3239 * Close is called when the inode is destroyed.
3240 * If we haven't opened the file for O_WRONLY, we
3241 * need to in the size_change case to obtain a stateid.
3244 * Because OPEN is always done by name in nfsv4, it is
3245 * possible that we opened a different file by the same
3246 * name. We can recognize this race condition, but we
3247 * can't do anything about it besides returning an error.
3249 * This will be fixed with VFS changes (lookup-intent).
3252 nfs4_proc_setattr(struct dentry
*dentry
, struct nfs_fattr
*fattr
,
3253 struct iattr
*sattr
)
3255 struct inode
*inode
= d_inode(dentry
);
3256 struct rpc_cred
*cred
= NULL
;
3257 struct nfs4_state
*state
= NULL
;
3258 struct nfs4_label
*label
= NULL
;
3261 if (pnfs_ld_layoutret_on_setattr(inode
) &&
3262 sattr
->ia_valid
& ATTR_SIZE
&&
3263 sattr
->ia_size
< i_size_read(inode
))
3264 pnfs_commit_and_return_layout(inode
);
3266 nfs_fattr_init(fattr
);
3268 /* Deal with open(O_TRUNC) */
3269 if (sattr
->ia_valid
& ATTR_OPEN
)
3270 sattr
->ia_valid
&= ~(ATTR_MTIME
|ATTR_CTIME
);
3272 /* Optimization: if the end result is no change, don't RPC */
3273 if ((sattr
->ia_valid
& ~(ATTR_FILE
|ATTR_OPEN
)) == 0)
3276 /* Search for an existing open(O_WRITE) file */
3277 if (sattr
->ia_valid
& ATTR_FILE
) {
3278 struct nfs_open_context
*ctx
;
3280 ctx
= nfs_file_open_context(sattr
->ia_file
);
3287 label
= nfs4_label_alloc(NFS_SERVER(inode
), GFP_KERNEL
);
3289 return PTR_ERR(label
);
3291 status
= nfs4_do_setattr(inode
, cred
, fattr
, sattr
, state
, NULL
, label
);
3293 nfs_setattr_update_inode(inode
, sattr
, fattr
);
3294 nfs_setsecurity(inode
, fattr
, label
);
3296 nfs4_label_free(label
);
3300 static int _nfs4_proc_lookup(struct rpc_clnt
*clnt
, struct inode
*dir
,
3301 const struct qstr
*name
, struct nfs_fh
*fhandle
,
3302 struct nfs_fattr
*fattr
, struct nfs4_label
*label
)
3304 struct nfs_server
*server
= NFS_SERVER(dir
);
3306 struct nfs4_lookup_arg args
= {
3307 .bitmask
= server
->attr_bitmask
,
3308 .dir_fh
= NFS_FH(dir
),
3311 struct nfs4_lookup_res res
= {
3317 struct rpc_message msg
= {
3318 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOOKUP
],
3323 args
.bitmask
= nfs4_bitmask(server
, label
);
3325 nfs_fattr_init(fattr
);
3327 dprintk("NFS call lookup %s\n", name
->name
);
3328 status
= nfs4_call_sync(clnt
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3329 dprintk("NFS reply lookup: %d\n", status
);
3333 static void nfs_fixup_secinfo_attributes(struct nfs_fattr
*fattr
)
3335 fattr
->valid
|= NFS_ATTR_FATTR_TYPE
| NFS_ATTR_FATTR_MODE
|
3336 NFS_ATTR_FATTR_NLINK
| NFS_ATTR_FATTR_MOUNTPOINT
;
3337 fattr
->mode
= S_IFDIR
| S_IRUGO
| S_IXUGO
;
3341 static int nfs4_proc_lookup_common(struct rpc_clnt
**clnt
, struct inode
*dir
,
3342 struct qstr
*name
, struct nfs_fh
*fhandle
,
3343 struct nfs_fattr
*fattr
, struct nfs4_label
*label
)
3345 struct nfs4_exception exception
= { };
3346 struct rpc_clnt
*client
= *clnt
;
3349 err
= _nfs4_proc_lookup(client
, dir
, name
, fhandle
, fattr
, label
);
3350 trace_nfs4_lookup(dir
, name
, err
);
3352 case -NFS4ERR_BADNAME
:
3355 case -NFS4ERR_MOVED
:
3356 err
= nfs4_get_referral(client
, dir
, name
, fattr
, fhandle
);
3358 case -NFS4ERR_WRONGSEC
:
3360 if (client
!= *clnt
)
3362 client
= nfs4_negotiate_security(client
, dir
, name
);
3364 return PTR_ERR(client
);
3366 exception
.retry
= 1;
3369 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
, &exception
);
3371 } while (exception
.retry
);
3376 else if (client
!= *clnt
)
3377 rpc_shutdown_client(client
);
3382 static int nfs4_proc_lookup(struct inode
*dir
, struct qstr
*name
,
3383 struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
,
3384 struct nfs4_label
*label
)
3387 struct rpc_clnt
*client
= NFS_CLIENT(dir
);
3389 status
= nfs4_proc_lookup_common(&client
, dir
, name
, fhandle
, fattr
, label
);
3390 if (client
!= NFS_CLIENT(dir
)) {
3391 rpc_shutdown_client(client
);
3392 nfs_fixup_secinfo_attributes(fattr
);
3398 nfs4_proc_lookup_mountpoint(struct inode
*dir
, struct qstr
*name
,
3399 struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
3401 struct rpc_clnt
*client
= NFS_CLIENT(dir
);
3404 status
= nfs4_proc_lookup_common(&client
, dir
, name
, fhandle
, fattr
, NULL
);
3406 return ERR_PTR(status
);
3407 return (client
== NFS_CLIENT(dir
)) ? rpc_clone_client(client
) : client
;
3410 static int _nfs4_proc_access(struct inode
*inode
, struct nfs_access_entry
*entry
)
3412 struct nfs_server
*server
= NFS_SERVER(inode
);
3413 struct nfs4_accessargs args
= {
3414 .fh
= NFS_FH(inode
),
3415 .bitmask
= server
->cache_consistency_bitmask
,
3417 struct nfs4_accessres res
= {
3420 struct rpc_message msg
= {
3421 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_ACCESS
],
3424 .rpc_cred
= entry
->cred
,
3426 int mode
= entry
->mask
;
3430 * Determine which access bits we want to ask for...
3432 if (mode
& MAY_READ
)
3433 args
.access
|= NFS4_ACCESS_READ
;
3434 if (S_ISDIR(inode
->i_mode
)) {
3435 if (mode
& MAY_WRITE
)
3436 args
.access
|= NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
| NFS4_ACCESS_DELETE
;
3437 if (mode
& MAY_EXEC
)
3438 args
.access
|= NFS4_ACCESS_LOOKUP
;
3440 if (mode
& MAY_WRITE
)
3441 args
.access
|= NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
;
3442 if (mode
& MAY_EXEC
)
3443 args
.access
|= NFS4_ACCESS_EXECUTE
;
3446 res
.fattr
= nfs_alloc_fattr();
3447 if (res
.fattr
== NULL
)
3450 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3452 nfs_access_set_mask(entry
, res
.access
);
3453 nfs_refresh_inode(inode
, res
.fattr
);
3455 nfs_free_fattr(res
.fattr
);
3459 static int nfs4_proc_access(struct inode
*inode
, struct nfs_access_entry
*entry
)
3461 struct nfs4_exception exception
= { };
3464 err
= _nfs4_proc_access(inode
, entry
);
3465 trace_nfs4_access(inode
, err
);
3466 err
= nfs4_handle_exception(NFS_SERVER(inode
), err
,
3468 } while (exception
.retry
);
3473 * TODO: For the time being, we don't try to get any attributes
3474 * along with any of the zero-copy operations READ, READDIR,
3477 * In the case of the first three, we want to put the GETATTR
3478 * after the read-type operation -- this is because it is hard
3479 * to predict the length of a GETATTR response in v4, and thus
3480 * align the READ data correctly. This means that the GETATTR
3481 * may end up partially falling into the page cache, and we should
3482 * shift it into the 'tail' of the xdr_buf before processing.
3483 * To do this efficiently, we need to know the total length
3484 * of data received, which doesn't seem to be available outside
3487 * In the case of WRITE, we also want to put the GETATTR after
3488 * the operation -- in this case because we want to make sure
3489 * we get the post-operation mtime and size.
3491 * Both of these changes to the XDR layer would in fact be quite
3492 * minor, but I decided to leave them for a subsequent patch.
3494 static int _nfs4_proc_readlink(struct inode
*inode
, struct page
*page
,
3495 unsigned int pgbase
, unsigned int pglen
)
3497 struct nfs4_readlink args
= {
3498 .fh
= NFS_FH(inode
),
3503 struct nfs4_readlink_res res
;
3504 struct rpc_message msg
= {
3505 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READLINK
],
3510 return nfs4_call_sync(NFS_SERVER(inode
)->client
, NFS_SERVER(inode
), &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3513 static int nfs4_proc_readlink(struct inode
*inode
, struct page
*page
,
3514 unsigned int pgbase
, unsigned int pglen
)
3516 struct nfs4_exception exception
= { };
3519 err
= _nfs4_proc_readlink(inode
, page
, pgbase
, pglen
);
3520 trace_nfs4_readlink(inode
, err
);
3521 err
= nfs4_handle_exception(NFS_SERVER(inode
), err
,
3523 } while (exception
.retry
);
3528 * This is just for mknod. open(O_CREAT) will always do ->open_context().
3531 nfs4_proc_create(struct inode
*dir
, struct dentry
*dentry
, struct iattr
*sattr
,
3534 struct nfs4_label l
, *ilabel
= NULL
;
3535 struct nfs_open_context
*ctx
;
3536 struct nfs4_state
*state
;
3540 ctx
= alloc_nfs_open_context(dentry
, FMODE_READ
);
3542 return PTR_ERR(ctx
);
3544 ilabel
= nfs4_label_init_security(dir
, dentry
, sattr
, &l
);
3546 sattr
->ia_mode
&= ~current_umask();
3547 state
= nfs4_do_open(dir
, ctx
, flags
, sattr
, ilabel
, &opened
);
3548 if (IS_ERR(state
)) {
3549 status
= PTR_ERR(state
);
3553 nfs4_label_release_security(ilabel
);
3554 put_nfs_open_context(ctx
);
3558 static int _nfs4_proc_remove(struct inode
*dir
, struct qstr
*name
)
3560 struct nfs_server
*server
= NFS_SERVER(dir
);
3561 struct nfs_removeargs args
= {
3565 struct nfs_removeres res
= {
3568 struct rpc_message msg
= {
3569 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_REMOVE
],
3575 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 1);
3577 update_changeattr(dir
, &res
.cinfo
);
3581 static int nfs4_proc_remove(struct inode
*dir
, struct qstr
*name
)
3583 struct nfs4_exception exception
= { };
3586 err
= _nfs4_proc_remove(dir
, name
);
3587 trace_nfs4_remove(dir
, name
, err
);
3588 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
3590 } while (exception
.retry
);
3594 static void nfs4_proc_unlink_setup(struct rpc_message
*msg
, struct inode
*dir
)
3596 struct nfs_server
*server
= NFS_SERVER(dir
);
3597 struct nfs_removeargs
*args
= msg
->rpc_argp
;
3598 struct nfs_removeres
*res
= msg
->rpc_resp
;
3600 res
->server
= server
;
3601 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_REMOVE
];
3602 nfs4_init_sequence(&args
->seq_args
, &res
->seq_res
, 1);
3604 nfs_fattr_init(res
->dir_attr
);
3607 static void nfs4_proc_unlink_rpc_prepare(struct rpc_task
*task
, struct nfs_unlinkdata
*data
)
3609 nfs4_setup_sequence(NFS_SERVER(data
->dir
),
3610 &data
->args
.seq_args
,
3615 static int nfs4_proc_unlink_done(struct rpc_task
*task
, struct inode
*dir
)
3617 struct nfs_unlinkdata
*data
= task
->tk_calldata
;
3618 struct nfs_removeres
*res
= &data
->res
;
3620 if (!nfs4_sequence_done(task
, &res
->seq_res
))
3622 if (nfs4_async_handle_error(task
, res
->server
, NULL
,
3623 &data
->timeout
) == -EAGAIN
)
3625 update_changeattr(dir
, &res
->cinfo
);
3629 static void nfs4_proc_rename_setup(struct rpc_message
*msg
, struct inode
*dir
)
3631 struct nfs_server
*server
= NFS_SERVER(dir
);
3632 struct nfs_renameargs
*arg
= msg
->rpc_argp
;
3633 struct nfs_renameres
*res
= msg
->rpc_resp
;
3635 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENAME
];
3636 res
->server
= server
;
3637 nfs4_init_sequence(&arg
->seq_args
, &res
->seq_res
, 1);
3640 static void nfs4_proc_rename_rpc_prepare(struct rpc_task
*task
, struct nfs_renamedata
*data
)
3642 nfs4_setup_sequence(NFS_SERVER(data
->old_dir
),
3643 &data
->args
.seq_args
,
3648 static int nfs4_proc_rename_done(struct rpc_task
*task
, struct inode
*old_dir
,
3649 struct inode
*new_dir
)
3651 struct nfs_renamedata
*data
= task
->tk_calldata
;
3652 struct nfs_renameres
*res
= &data
->res
;
3654 if (!nfs4_sequence_done(task
, &res
->seq_res
))
3656 if (nfs4_async_handle_error(task
, res
->server
, NULL
, &data
->timeout
) == -EAGAIN
)
3659 update_changeattr(old_dir
, &res
->old_cinfo
);
3660 update_changeattr(new_dir
, &res
->new_cinfo
);
3664 static int _nfs4_proc_link(struct inode
*inode
, struct inode
*dir
, struct qstr
*name
)
3666 struct nfs_server
*server
= NFS_SERVER(inode
);
3667 struct nfs4_link_arg arg
= {
3668 .fh
= NFS_FH(inode
),
3669 .dir_fh
= NFS_FH(dir
),
3671 .bitmask
= server
->attr_bitmask
,
3673 struct nfs4_link_res res
= {
3677 struct rpc_message msg
= {
3678 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LINK
],
3682 int status
= -ENOMEM
;
3684 res
.fattr
= nfs_alloc_fattr();
3685 if (res
.fattr
== NULL
)
3688 res
.label
= nfs4_label_alloc(server
, GFP_KERNEL
);
3689 if (IS_ERR(res
.label
)) {
3690 status
= PTR_ERR(res
.label
);
3693 arg
.bitmask
= nfs4_bitmask(server
, res
.label
);
3695 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
3697 update_changeattr(dir
, &res
.cinfo
);
3698 status
= nfs_post_op_update_inode(inode
, res
.fattr
);
3700 nfs_setsecurity(inode
, res
.fattr
, res
.label
);
3704 nfs4_label_free(res
.label
);
3707 nfs_free_fattr(res
.fattr
);
3711 static int nfs4_proc_link(struct inode
*inode
, struct inode
*dir
, struct qstr
*name
)
3713 struct nfs4_exception exception
= { };
3716 err
= nfs4_handle_exception(NFS_SERVER(inode
),
3717 _nfs4_proc_link(inode
, dir
, name
),
3719 } while (exception
.retry
);
3723 struct nfs4_createdata
{
3724 struct rpc_message msg
;
3725 struct nfs4_create_arg arg
;
3726 struct nfs4_create_res res
;
3728 struct nfs_fattr fattr
;
3729 struct nfs4_label
*label
;
3732 static struct nfs4_createdata
*nfs4_alloc_createdata(struct inode
*dir
,
3733 struct qstr
*name
, struct iattr
*sattr
, u32 ftype
)
3735 struct nfs4_createdata
*data
;
3737 data
= kzalloc(sizeof(*data
), GFP_KERNEL
);
3739 struct nfs_server
*server
= NFS_SERVER(dir
);
3741 data
->label
= nfs4_label_alloc(server
, GFP_KERNEL
);
3742 if (IS_ERR(data
->label
))
3745 data
->msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CREATE
];
3746 data
->msg
.rpc_argp
= &data
->arg
;
3747 data
->msg
.rpc_resp
= &data
->res
;
3748 data
->arg
.dir_fh
= NFS_FH(dir
);
3749 data
->arg
.server
= server
;
3750 data
->arg
.name
= name
;
3751 data
->arg
.attrs
= sattr
;
3752 data
->arg
.ftype
= ftype
;
3753 data
->arg
.bitmask
= nfs4_bitmask(server
, data
->label
);
3754 data
->res
.server
= server
;
3755 data
->res
.fh
= &data
->fh
;
3756 data
->res
.fattr
= &data
->fattr
;
3757 data
->res
.label
= data
->label
;
3758 nfs_fattr_init(data
->res
.fattr
);
3766 static int nfs4_do_create(struct inode
*dir
, struct dentry
*dentry
, struct nfs4_createdata
*data
)
3768 int status
= nfs4_call_sync(NFS_SERVER(dir
)->client
, NFS_SERVER(dir
), &data
->msg
,
3769 &data
->arg
.seq_args
, &data
->res
.seq_res
, 1);
3771 update_changeattr(dir
, &data
->res
.dir_cinfo
);
3772 status
= nfs_instantiate(dentry
, data
->res
.fh
, data
->res
.fattr
, data
->res
.label
);
3777 static void nfs4_free_createdata(struct nfs4_createdata
*data
)
3779 nfs4_label_free(data
->label
);
3783 static int _nfs4_proc_symlink(struct inode
*dir
, struct dentry
*dentry
,
3784 struct page
*page
, unsigned int len
, struct iattr
*sattr
,
3785 struct nfs4_label
*label
)
3787 struct nfs4_createdata
*data
;
3788 int status
= -ENAMETOOLONG
;
3790 if (len
> NFS4_MAXPATHLEN
)
3794 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4LNK
);
3798 data
->msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SYMLINK
];
3799 data
->arg
.u
.symlink
.pages
= &page
;
3800 data
->arg
.u
.symlink
.len
= len
;
3801 data
->arg
.label
= label
;
3803 status
= nfs4_do_create(dir
, dentry
, data
);
3805 nfs4_free_createdata(data
);
3810 static int nfs4_proc_symlink(struct inode
*dir
, struct dentry
*dentry
,
3811 struct page
*page
, unsigned int len
, struct iattr
*sattr
)
3813 struct nfs4_exception exception
= { };
3814 struct nfs4_label l
, *label
= NULL
;
3817 label
= nfs4_label_init_security(dir
, dentry
, sattr
, &l
);
3820 err
= _nfs4_proc_symlink(dir
, dentry
, page
, len
, sattr
, label
);
3821 trace_nfs4_symlink(dir
, &dentry
->d_name
, err
);
3822 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
3824 } while (exception
.retry
);
3826 nfs4_label_release_security(label
);
3830 static int _nfs4_proc_mkdir(struct inode
*dir
, struct dentry
*dentry
,
3831 struct iattr
*sattr
, struct nfs4_label
*label
)
3833 struct nfs4_createdata
*data
;
3834 int status
= -ENOMEM
;
3836 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4DIR
);
3840 data
->arg
.label
= label
;
3841 status
= nfs4_do_create(dir
, dentry
, data
);
3843 nfs4_free_createdata(data
);
3848 static int nfs4_proc_mkdir(struct inode
*dir
, struct dentry
*dentry
,
3849 struct iattr
*sattr
)
3851 struct nfs4_exception exception
= { };
3852 struct nfs4_label l
, *label
= NULL
;
3855 label
= nfs4_label_init_security(dir
, dentry
, sattr
, &l
);
3857 sattr
->ia_mode
&= ~current_umask();
3859 err
= _nfs4_proc_mkdir(dir
, dentry
, sattr
, label
);
3860 trace_nfs4_mkdir(dir
, &dentry
->d_name
, err
);
3861 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
3863 } while (exception
.retry
);
3864 nfs4_label_release_security(label
);
3869 static int _nfs4_proc_readdir(struct dentry
*dentry
, struct rpc_cred
*cred
,
3870 u64 cookie
, struct page
**pages
, unsigned int count
, int plus
)
3872 struct inode
*dir
= d_inode(dentry
);
3873 struct nfs4_readdir_arg args
= {
3878 .bitmask
= NFS_SERVER(d_inode(dentry
))->attr_bitmask
,
3881 struct nfs4_readdir_res res
;
3882 struct rpc_message msg
= {
3883 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READDIR
],
3890 dprintk("%s: dentry = %pd2, cookie = %Lu\n", __func__
,
3892 (unsigned long long)cookie
);
3893 nfs4_setup_readdir(cookie
, NFS_I(dir
)->cookieverf
, dentry
, &args
);
3894 res
.pgbase
= args
.pgbase
;
3895 status
= nfs4_call_sync(NFS_SERVER(dir
)->client
, NFS_SERVER(dir
), &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3897 memcpy(NFS_I(dir
)->cookieverf
, res
.verifier
.data
, NFS4_VERIFIER_SIZE
);
3898 status
+= args
.pgbase
;
3901 nfs_invalidate_atime(dir
);
3903 dprintk("%s: returns %d\n", __func__
, status
);
3907 static int nfs4_proc_readdir(struct dentry
*dentry
, struct rpc_cred
*cred
,
3908 u64 cookie
, struct page
**pages
, unsigned int count
, int plus
)
3910 struct nfs4_exception exception
= { };
3913 err
= _nfs4_proc_readdir(dentry
, cred
, cookie
,
3914 pages
, count
, plus
);
3915 trace_nfs4_readdir(d_inode(dentry
), err
);
3916 err
= nfs4_handle_exception(NFS_SERVER(d_inode(dentry
)), err
,
3918 } while (exception
.retry
);
3922 static int _nfs4_proc_mknod(struct inode
*dir
, struct dentry
*dentry
,
3923 struct iattr
*sattr
, struct nfs4_label
*label
, dev_t rdev
)
3925 struct nfs4_createdata
*data
;
3926 int mode
= sattr
->ia_mode
;
3927 int status
= -ENOMEM
;
3929 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4SOCK
);
3934 data
->arg
.ftype
= NF4FIFO
;
3935 else if (S_ISBLK(mode
)) {
3936 data
->arg
.ftype
= NF4BLK
;
3937 data
->arg
.u
.device
.specdata1
= MAJOR(rdev
);
3938 data
->arg
.u
.device
.specdata2
= MINOR(rdev
);
3940 else if (S_ISCHR(mode
)) {
3941 data
->arg
.ftype
= NF4CHR
;
3942 data
->arg
.u
.device
.specdata1
= MAJOR(rdev
);
3943 data
->arg
.u
.device
.specdata2
= MINOR(rdev
);
3944 } else if (!S_ISSOCK(mode
)) {
3949 data
->arg
.label
= label
;
3950 status
= nfs4_do_create(dir
, dentry
, data
);
3952 nfs4_free_createdata(data
);
3957 static int nfs4_proc_mknod(struct inode
*dir
, struct dentry
*dentry
,
3958 struct iattr
*sattr
, dev_t rdev
)
3960 struct nfs4_exception exception
= { };
3961 struct nfs4_label l
, *label
= NULL
;
3964 label
= nfs4_label_init_security(dir
, dentry
, sattr
, &l
);
3966 sattr
->ia_mode
&= ~current_umask();
3968 err
= _nfs4_proc_mknod(dir
, dentry
, sattr
, label
, rdev
);
3969 trace_nfs4_mknod(dir
, &dentry
->d_name
, err
);
3970 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
3972 } while (exception
.retry
);
3974 nfs4_label_release_security(label
);
3979 static int _nfs4_proc_statfs(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3980 struct nfs_fsstat
*fsstat
)
3982 struct nfs4_statfs_arg args
= {
3984 .bitmask
= server
->attr_bitmask
,
3986 struct nfs4_statfs_res res
= {
3989 struct rpc_message msg
= {
3990 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_STATFS
],
3995 nfs_fattr_init(fsstat
->fattr
);
3996 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3999 static int nfs4_proc_statfs(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsstat
*fsstat
)
4001 struct nfs4_exception exception
= { };
4004 err
= nfs4_handle_exception(server
,
4005 _nfs4_proc_statfs(server
, fhandle
, fsstat
),
4007 } while (exception
.retry
);
4011 static int _nfs4_do_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
4012 struct nfs_fsinfo
*fsinfo
)
4014 struct nfs4_fsinfo_arg args
= {
4016 .bitmask
= server
->attr_bitmask
,
4018 struct nfs4_fsinfo_res res
= {
4021 struct rpc_message msg
= {
4022 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FSINFO
],
4027 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
4030 static int nfs4_do_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsinfo
*fsinfo
)
4032 struct nfs4_exception exception
= { };
4033 unsigned long now
= jiffies
;
4037 err
= _nfs4_do_fsinfo(server
, fhandle
, fsinfo
);
4038 trace_nfs4_fsinfo(server
, fhandle
, fsinfo
->fattr
, err
);
4040 struct nfs_client
*clp
= server
->nfs_client
;
4042 spin_lock(&clp
->cl_lock
);
4043 clp
->cl_lease_time
= fsinfo
->lease_time
* HZ
;
4044 clp
->cl_last_renewal
= now
;
4045 spin_unlock(&clp
->cl_lock
);
4048 err
= nfs4_handle_exception(server
, err
, &exception
);
4049 } while (exception
.retry
);
4053 static int nfs4_proc_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsinfo
*fsinfo
)
4057 nfs_fattr_init(fsinfo
->fattr
);
4058 error
= nfs4_do_fsinfo(server
, fhandle
, fsinfo
);
4060 /* block layout checks this! */
4061 server
->pnfs_blksize
= fsinfo
->blksize
;
4062 set_pnfs_layoutdriver(server
, fhandle
, fsinfo
->layouttype
);
4068 static int _nfs4_proc_pathconf(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
4069 struct nfs_pathconf
*pathconf
)
4071 struct nfs4_pathconf_arg args
= {
4073 .bitmask
= server
->attr_bitmask
,
4075 struct nfs4_pathconf_res res
= {
4076 .pathconf
= pathconf
,
4078 struct rpc_message msg
= {
4079 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_PATHCONF
],
4084 /* None of the pathconf attributes are mandatory to implement */
4085 if ((args
.bitmask
[0] & nfs4_pathconf_bitmap
[0]) == 0) {
4086 memset(pathconf
, 0, sizeof(*pathconf
));
4090 nfs_fattr_init(pathconf
->fattr
);
4091 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
4094 static int nfs4_proc_pathconf(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
4095 struct nfs_pathconf
*pathconf
)
4097 struct nfs4_exception exception
= { };
4101 err
= nfs4_handle_exception(server
,
4102 _nfs4_proc_pathconf(server
, fhandle
, pathconf
),
4104 } while (exception
.retry
);
4108 int nfs4_set_rw_stateid(nfs4_stateid
*stateid
,
4109 const struct nfs_open_context
*ctx
,
4110 const struct nfs_lock_context
*l_ctx
,
4113 const struct nfs_lockowner
*lockowner
= NULL
;
4116 lockowner
= &l_ctx
->lockowner
;
4117 return nfs4_select_rw_stateid(stateid
, ctx
->state
, fmode
, lockowner
);
4119 EXPORT_SYMBOL_GPL(nfs4_set_rw_stateid
);
4121 static bool nfs4_stateid_is_current(nfs4_stateid
*stateid
,
4122 const struct nfs_open_context
*ctx
,
4123 const struct nfs_lock_context
*l_ctx
,
4126 nfs4_stateid current_stateid
;
4128 /* If the current stateid represents a lost lock, then exit */
4129 if (nfs4_set_rw_stateid(¤t_stateid
, ctx
, l_ctx
, fmode
) == -EIO
)
4131 return nfs4_stateid_match(stateid
, ¤t_stateid
);
4134 static bool nfs4_error_stateid_expired(int err
)
4137 case -NFS4ERR_DELEG_REVOKED
:
4138 case -NFS4ERR_ADMIN_REVOKED
:
4139 case -NFS4ERR_BAD_STATEID
:
4140 case -NFS4ERR_STALE_STATEID
:
4141 case -NFS4ERR_OLD_STATEID
:
4142 case -NFS4ERR_OPENMODE
:
4143 case -NFS4ERR_EXPIRED
:
4149 void __nfs4_read_done_cb(struct nfs_pgio_header
*hdr
)
4151 nfs_invalidate_atime(hdr
->inode
);
4154 static int nfs4_read_done_cb(struct rpc_task
*task
, struct nfs_pgio_header
*hdr
)
4156 struct nfs_server
*server
= NFS_SERVER(hdr
->inode
);
4158 trace_nfs4_read(hdr
, task
->tk_status
);
4159 if (nfs4_async_handle_error(task
, server
,
4160 hdr
->args
.context
->state
,
4162 rpc_restart_call_prepare(task
);
4166 __nfs4_read_done_cb(hdr
);
4167 if (task
->tk_status
> 0)
4168 renew_lease(server
, hdr
->timestamp
);
4172 static bool nfs4_read_stateid_changed(struct rpc_task
*task
,
4173 struct nfs_pgio_args
*args
)
4176 if (!nfs4_error_stateid_expired(task
->tk_status
) ||
4177 nfs4_stateid_is_current(&args
->stateid
,
4182 rpc_restart_call_prepare(task
);
4186 static int nfs4_read_done(struct rpc_task
*task
, struct nfs_pgio_header
*hdr
)
4189 dprintk("--> %s\n", __func__
);
4191 if (!nfs4_sequence_done(task
, &hdr
->res
.seq_res
))
4193 if (nfs4_read_stateid_changed(task
, &hdr
->args
))
4195 return hdr
->pgio_done_cb
? hdr
->pgio_done_cb(task
, hdr
) :
4196 nfs4_read_done_cb(task
, hdr
);
4199 static void nfs4_proc_read_setup(struct nfs_pgio_header
*hdr
,
4200 struct rpc_message
*msg
)
4202 hdr
->timestamp
= jiffies
;
4203 hdr
->pgio_done_cb
= nfs4_read_done_cb
;
4204 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READ
];
4205 nfs4_init_sequence(&hdr
->args
.seq_args
, &hdr
->res
.seq_res
, 0);
4208 static int nfs4_proc_pgio_rpc_prepare(struct rpc_task
*task
,
4209 struct nfs_pgio_header
*hdr
)
4211 if (nfs4_setup_sequence(NFS_SERVER(hdr
->inode
),
4212 &hdr
->args
.seq_args
,
4216 if (nfs4_set_rw_stateid(&hdr
->args
.stateid
, hdr
->args
.context
,
4217 hdr
->args
.lock_context
,
4218 hdr
->rw_ops
->rw_mode
) == -EIO
)
4220 if (unlikely(test_bit(NFS_CONTEXT_BAD
, &hdr
->args
.context
->flags
)))
4225 static int nfs4_write_done_cb(struct rpc_task
*task
,
4226 struct nfs_pgio_header
*hdr
)
4228 struct inode
*inode
= hdr
->inode
;
4230 trace_nfs4_write(hdr
, task
->tk_status
);
4231 if (nfs4_async_handle_error(task
, NFS_SERVER(inode
),
4232 hdr
->args
.context
->state
,
4234 rpc_restart_call_prepare(task
);
4237 if (task
->tk_status
>= 0) {
4238 renew_lease(NFS_SERVER(inode
), hdr
->timestamp
);
4239 nfs_writeback_update_inode(hdr
);
4244 static bool nfs4_write_stateid_changed(struct rpc_task
*task
,
4245 struct nfs_pgio_args
*args
)
4248 if (!nfs4_error_stateid_expired(task
->tk_status
) ||
4249 nfs4_stateid_is_current(&args
->stateid
,
4254 rpc_restart_call_prepare(task
);
4258 static int nfs4_write_done(struct rpc_task
*task
, struct nfs_pgio_header
*hdr
)
4260 if (!nfs4_sequence_done(task
, &hdr
->res
.seq_res
))
4262 if (nfs4_write_stateid_changed(task
, &hdr
->args
))
4264 return hdr
->pgio_done_cb
? hdr
->pgio_done_cb(task
, hdr
) :
4265 nfs4_write_done_cb(task
, hdr
);
4269 bool nfs4_write_need_cache_consistency_data(struct nfs_pgio_header
*hdr
)
4271 /* Don't request attributes for pNFS or O_DIRECT writes */
4272 if (hdr
->ds_clp
!= NULL
|| hdr
->dreq
!= NULL
)
4274 /* Otherwise, request attributes if and only if we don't hold
4277 return nfs4_have_delegation(hdr
->inode
, FMODE_READ
) == 0;
4280 static void nfs4_proc_write_setup(struct nfs_pgio_header
*hdr
,
4281 struct rpc_message
*msg
)
4283 struct nfs_server
*server
= NFS_SERVER(hdr
->inode
);
4285 if (!nfs4_write_need_cache_consistency_data(hdr
)) {
4286 hdr
->args
.bitmask
= NULL
;
4287 hdr
->res
.fattr
= NULL
;
4289 hdr
->args
.bitmask
= server
->cache_consistency_bitmask
;
4291 if (!hdr
->pgio_done_cb
)
4292 hdr
->pgio_done_cb
= nfs4_write_done_cb
;
4293 hdr
->res
.server
= server
;
4294 hdr
->timestamp
= jiffies
;
4296 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_WRITE
];
4297 nfs4_init_sequence(&hdr
->args
.seq_args
, &hdr
->res
.seq_res
, 1);
4300 static void nfs4_proc_commit_rpc_prepare(struct rpc_task
*task
, struct nfs_commit_data
*data
)
4302 nfs4_setup_sequence(NFS_SERVER(data
->inode
),
4303 &data
->args
.seq_args
,
4308 static int nfs4_commit_done_cb(struct rpc_task
*task
, struct nfs_commit_data
*data
)
4310 struct inode
*inode
= data
->inode
;
4312 trace_nfs4_commit(data
, task
->tk_status
);
4313 if (nfs4_async_handle_error(task
, NFS_SERVER(inode
),
4314 NULL
, NULL
) == -EAGAIN
) {
4315 rpc_restart_call_prepare(task
);
4321 static int nfs4_commit_done(struct rpc_task
*task
, struct nfs_commit_data
*data
)
4323 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
4325 return data
->commit_done_cb(task
, data
);
4328 static void nfs4_proc_commit_setup(struct nfs_commit_data
*data
, struct rpc_message
*msg
)
4330 struct nfs_server
*server
= NFS_SERVER(data
->inode
);
4332 if (data
->commit_done_cb
== NULL
)
4333 data
->commit_done_cb
= nfs4_commit_done_cb
;
4334 data
->res
.server
= server
;
4335 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_COMMIT
];
4336 nfs4_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
4339 struct nfs4_renewdata
{
4340 struct nfs_client
*client
;
4341 unsigned long timestamp
;
4345 * nfs4_proc_async_renew(): This is not one of the nfs_rpc_ops; it is a special
4346 * standalone procedure for queueing an asynchronous RENEW.
4348 static void nfs4_renew_release(void *calldata
)
4350 struct nfs4_renewdata
*data
= calldata
;
4351 struct nfs_client
*clp
= data
->client
;
4353 if (atomic_read(&clp
->cl_count
) > 1)
4354 nfs4_schedule_state_renewal(clp
);
4355 nfs_put_client(clp
);
4359 static void nfs4_renew_done(struct rpc_task
*task
, void *calldata
)
4361 struct nfs4_renewdata
*data
= calldata
;
4362 struct nfs_client
*clp
= data
->client
;
4363 unsigned long timestamp
= data
->timestamp
;
4365 trace_nfs4_renew_async(clp
, task
->tk_status
);
4366 switch (task
->tk_status
) {
4369 case -NFS4ERR_LEASE_MOVED
:
4370 nfs4_schedule_lease_moved_recovery(clp
);
4373 /* Unless we're shutting down, schedule state recovery! */
4374 if (test_bit(NFS_CS_RENEWD
, &clp
->cl_res_state
) == 0)
4376 if (task
->tk_status
!= NFS4ERR_CB_PATH_DOWN
) {
4377 nfs4_schedule_lease_recovery(clp
);
4380 nfs4_schedule_path_down_recovery(clp
);
4382 do_renew_lease(clp
, timestamp
);
4385 static const struct rpc_call_ops nfs4_renew_ops
= {
4386 .rpc_call_done
= nfs4_renew_done
,
4387 .rpc_release
= nfs4_renew_release
,
4390 static int nfs4_proc_async_renew(struct nfs_client
*clp
, struct rpc_cred
*cred
, unsigned renew_flags
)
4392 struct rpc_message msg
= {
4393 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENEW
],
4397 struct nfs4_renewdata
*data
;
4399 if (renew_flags
== 0)
4401 if (!atomic_inc_not_zero(&clp
->cl_count
))
4403 data
= kmalloc(sizeof(*data
), GFP_NOFS
);
4407 data
->timestamp
= jiffies
;
4408 return rpc_call_async(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
,
4409 &nfs4_renew_ops
, data
);
4412 static int nfs4_proc_renew(struct nfs_client
*clp
, struct rpc_cred
*cred
)
4414 struct rpc_message msg
= {
4415 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENEW
],
4419 unsigned long now
= jiffies
;
4422 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
4425 do_renew_lease(clp
, now
);
4429 static inline int nfs4_server_supports_acls(struct nfs_server
*server
)
4431 return server
->caps
& NFS_CAP_ACLS
;
4434 /* Assuming that XATTR_SIZE_MAX is a multiple of PAGE_SIZE, and that
4435 * it's OK to put sizeof(void) * (XATTR_SIZE_MAX/PAGE_SIZE) bytes on
4438 #define NFS4ACL_MAXPAGES DIV_ROUND_UP(XATTR_SIZE_MAX, PAGE_SIZE)
4440 static int buf_to_pages_noslab(const void *buf
, size_t buflen
,
4441 struct page
**pages
, unsigned int *pgbase
)
4443 struct page
*newpage
, **spages
;
4449 len
= min_t(size_t, PAGE_SIZE
, buflen
);
4450 newpage
= alloc_page(GFP_KERNEL
);
4452 if (newpage
== NULL
)
4454 memcpy(page_address(newpage
), buf
, len
);
4459 } while (buflen
!= 0);
4465 __free_page(spages
[rc
-1]);
4469 struct nfs4_cached_acl
{
4475 static void nfs4_set_cached_acl(struct inode
*inode
, struct nfs4_cached_acl
*acl
)
4477 struct nfs_inode
*nfsi
= NFS_I(inode
);
4479 spin_lock(&inode
->i_lock
);
4480 kfree(nfsi
->nfs4_acl
);
4481 nfsi
->nfs4_acl
= acl
;
4482 spin_unlock(&inode
->i_lock
);
4485 static void nfs4_zap_acl_attr(struct inode
*inode
)
4487 nfs4_set_cached_acl(inode
, NULL
);
4490 static inline ssize_t
nfs4_read_cached_acl(struct inode
*inode
, char *buf
, size_t buflen
)
4492 struct nfs_inode
*nfsi
= NFS_I(inode
);
4493 struct nfs4_cached_acl
*acl
;
4496 spin_lock(&inode
->i_lock
);
4497 acl
= nfsi
->nfs4_acl
;
4500 if (buf
== NULL
) /* user is just asking for length */
4502 if (acl
->cached
== 0)
4504 ret
= -ERANGE
; /* see getxattr(2) man page */
4505 if (acl
->len
> buflen
)
4507 memcpy(buf
, acl
->data
, acl
->len
);
4511 spin_unlock(&inode
->i_lock
);
4515 static void nfs4_write_cached_acl(struct inode
*inode
, struct page
**pages
, size_t pgbase
, size_t acl_len
)
4517 struct nfs4_cached_acl
*acl
;
4518 size_t buflen
= sizeof(*acl
) + acl_len
;
4520 if (buflen
<= PAGE_SIZE
) {
4521 acl
= kmalloc(buflen
, GFP_KERNEL
);
4525 _copy_from_pages(acl
->data
, pages
, pgbase
, acl_len
);
4527 acl
= kmalloc(sizeof(*acl
), GFP_KERNEL
);
4534 nfs4_set_cached_acl(inode
, acl
);
4538 * The getxattr API returns the required buffer length when called with a
4539 * NULL buf. The NFSv4 acl tool then calls getxattr again after allocating
4540 * the required buf. On a NULL buf, we send a page of data to the server
4541 * guessing that the ACL request can be serviced by a page. If so, we cache
4542 * up to the page of ACL data, and the 2nd call to getxattr is serviced by
4543 * the cache. If not so, we throw away the page, and cache the required
4544 * length. The next getxattr call will then produce another round trip to
4545 * the server, this time with the input buf of the required size.
4547 static ssize_t
__nfs4_get_acl_uncached(struct inode
*inode
, void *buf
, size_t buflen
)
4549 struct page
*pages
[NFS4ACL_MAXPAGES
] = {NULL
, };
4550 struct nfs_getaclargs args
= {
4551 .fh
= NFS_FH(inode
),
4555 struct nfs_getaclres res
= {
4558 struct rpc_message msg
= {
4559 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETACL
],
4563 unsigned int npages
= DIV_ROUND_UP(buflen
, PAGE_SIZE
);
4564 int ret
= -ENOMEM
, i
;
4566 /* As long as we're doing a round trip to the server anyway,
4567 * let's be prepared for a page of acl data. */
4570 if (npages
> ARRAY_SIZE(pages
))
4573 for (i
= 0; i
< npages
; i
++) {
4574 pages
[i
] = alloc_page(GFP_KERNEL
);
4579 /* for decoding across pages */
4580 res
.acl_scratch
= alloc_page(GFP_KERNEL
);
4581 if (!res
.acl_scratch
)
4584 args
.acl_len
= npages
* PAGE_SIZE
;
4585 args
.acl_pgbase
= 0;
4587 dprintk("%s buf %p buflen %zu npages %d args.acl_len %zu\n",
4588 __func__
, buf
, buflen
, npages
, args
.acl_len
);
4589 ret
= nfs4_call_sync(NFS_SERVER(inode
)->client
, NFS_SERVER(inode
),
4590 &msg
, &args
.seq_args
, &res
.seq_res
, 0);
4594 /* Handle the case where the passed-in buffer is too short */
4595 if (res
.acl_flags
& NFS4_ACL_TRUNC
) {
4596 /* Did the user only issue a request for the acl length? */
4602 nfs4_write_cached_acl(inode
, pages
, res
.acl_data_offset
, res
.acl_len
);
4604 if (res
.acl_len
> buflen
) {
4608 _copy_from_pages(buf
, pages
, res
.acl_data_offset
, res
.acl_len
);
4613 for (i
= 0; i
< npages
; i
++)
4615 __free_page(pages
[i
]);
4616 if (res
.acl_scratch
)
4617 __free_page(res
.acl_scratch
);
4621 static ssize_t
nfs4_get_acl_uncached(struct inode
*inode
, void *buf
, size_t buflen
)
4623 struct nfs4_exception exception
= { };
4626 ret
= __nfs4_get_acl_uncached(inode
, buf
, buflen
);
4627 trace_nfs4_get_acl(inode
, ret
);
4630 ret
= nfs4_handle_exception(NFS_SERVER(inode
), ret
, &exception
);
4631 } while (exception
.retry
);
4635 static ssize_t
nfs4_proc_get_acl(struct inode
*inode
, void *buf
, size_t buflen
)
4637 struct nfs_server
*server
= NFS_SERVER(inode
);
4640 if (!nfs4_server_supports_acls(server
))
4642 ret
= nfs_revalidate_inode(server
, inode
);
4645 if (NFS_I(inode
)->cache_validity
& NFS_INO_INVALID_ACL
)
4646 nfs_zap_acl_cache(inode
);
4647 ret
= nfs4_read_cached_acl(inode
, buf
, buflen
);
4649 /* -ENOENT is returned if there is no ACL or if there is an ACL
4650 * but no cached acl data, just the acl length */
4652 return nfs4_get_acl_uncached(inode
, buf
, buflen
);
4655 static int __nfs4_proc_set_acl(struct inode
*inode
, const void *buf
, size_t buflen
)
4657 struct nfs_server
*server
= NFS_SERVER(inode
);
4658 struct page
*pages
[NFS4ACL_MAXPAGES
];
4659 struct nfs_setaclargs arg
= {
4660 .fh
= NFS_FH(inode
),
4664 struct nfs_setaclres res
;
4665 struct rpc_message msg
= {
4666 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETACL
],
4670 unsigned int npages
= DIV_ROUND_UP(buflen
, PAGE_SIZE
);
4673 if (!nfs4_server_supports_acls(server
))
4675 if (npages
> ARRAY_SIZE(pages
))
4677 i
= buf_to_pages_noslab(buf
, buflen
, arg
.acl_pages
, &arg
.acl_pgbase
);
4680 nfs4_inode_return_delegation(inode
);
4681 ret
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
4684 * Free each page after tx, so the only ref left is
4685 * held by the network stack
4688 put_page(pages
[i
-1]);
4691 * Acl update can result in inode attribute update.
4692 * so mark the attribute cache invalid.
4694 spin_lock(&inode
->i_lock
);
4695 NFS_I(inode
)->cache_validity
|= NFS_INO_INVALID_ATTR
;
4696 spin_unlock(&inode
->i_lock
);
4697 nfs_access_zap_cache(inode
);
4698 nfs_zap_acl_cache(inode
);
4702 static int nfs4_proc_set_acl(struct inode
*inode
, const void *buf
, size_t buflen
)
4704 struct nfs4_exception exception
= { };
4707 err
= __nfs4_proc_set_acl(inode
, buf
, buflen
);
4708 trace_nfs4_set_acl(inode
, err
);
4709 err
= nfs4_handle_exception(NFS_SERVER(inode
), err
,
4711 } while (exception
.retry
);
4715 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
4716 static int _nfs4_get_security_label(struct inode
*inode
, void *buf
,
4719 struct nfs_server
*server
= NFS_SERVER(inode
);
4720 struct nfs_fattr fattr
;
4721 struct nfs4_label label
= {0, 0, buflen
, buf
};
4723 u32 bitmask
[3] = { 0, 0, FATTR4_WORD2_SECURITY_LABEL
};
4724 struct nfs4_getattr_arg arg
= {
4725 .fh
= NFS_FH(inode
),
4728 struct nfs4_getattr_res res
= {
4733 struct rpc_message msg
= {
4734 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETATTR
],
4740 nfs_fattr_init(&fattr
);
4742 ret
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 0);
4745 if (!(fattr
.valid
& NFS_ATTR_FATTR_V4_SECURITY_LABEL
))
4747 if (buflen
< label
.len
)
4752 static int nfs4_get_security_label(struct inode
*inode
, void *buf
,
4755 struct nfs4_exception exception
= { };
4758 if (!nfs_server_capable(inode
, NFS_CAP_SECURITY_LABEL
))
4762 err
= _nfs4_get_security_label(inode
, buf
, buflen
);
4763 trace_nfs4_get_security_label(inode
, err
);
4764 err
= nfs4_handle_exception(NFS_SERVER(inode
), err
,
4766 } while (exception
.retry
);
4770 static int _nfs4_do_set_security_label(struct inode
*inode
,
4771 struct nfs4_label
*ilabel
,
4772 struct nfs_fattr
*fattr
,
4773 struct nfs4_label
*olabel
)
4776 struct iattr sattr
= {0};
4777 struct nfs_server
*server
= NFS_SERVER(inode
);
4778 const u32 bitmask
[3] = { 0, 0, FATTR4_WORD2_SECURITY_LABEL
};
4779 struct nfs_setattrargs arg
= {
4780 .fh
= NFS_FH(inode
),
4786 struct nfs_setattrres res
= {
4791 struct rpc_message msg
= {
4792 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETATTR
],
4798 nfs4_stateid_copy(&arg
.stateid
, &zero_stateid
);
4800 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
4802 dprintk("%s failed: %d\n", __func__
, status
);
4807 static int nfs4_do_set_security_label(struct inode
*inode
,
4808 struct nfs4_label
*ilabel
,
4809 struct nfs_fattr
*fattr
,
4810 struct nfs4_label
*olabel
)
4812 struct nfs4_exception exception
= { };
4816 err
= _nfs4_do_set_security_label(inode
, ilabel
,
4818 trace_nfs4_set_security_label(inode
, err
);
4819 err
= nfs4_handle_exception(NFS_SERVER(inode
), err
,
4821 } while (exception
.retry
);
4826 nfs4_set_security_label(struct dentry
*dentry
, const void *buf
, size_t buflen
)
4828 struct nfs4_label ilabel
, *olabel
= NULL
;
4829 struct nfs_fattr fattr
;
4830 struct rpc_cred
*cred
;
4831 struct inode
*inode
= d_inode(dentry
);
4834 if (!nfs_server_capable(inode
, NFS_CAP_SECURITY_LABEL
))
4837 nfs_fattr_init(&fattr
);
4841 ilabel
.label
= (char *)buf
;
4842 ilabel
.len
= buflen
;
4844 cred
= rpc_lookup_cred();
4846 return PTR_ERR(cred
);
4848 olabel
= nfs4_label_alloc(NFS_SERVER(inode
), GFP_KERNEL
);
4849 if (IS_ERR(olabel
)) {
4850 status
= -PTR_ERR(olabel
);
4854 status
= nfs4_do_set_security_label(inode
, &ilabel
, &fattr
, olabel
);
4856 nfs_setsecurity(inode
, &fattr
, olabel
);
4858 nfs4_label_free(olabel
);
4863 #endif /* CONFIG_NFS_V4_SECURITY_LABEL */
4867 nfs4_async_handle_error(struct rpc_task
*task
, const struct nfs_server
*server
,
4868 struct nfs4_state
*state
, long *timeout
)
4870 struct nfs_client
*clp
= server
->nfs_client
;
4872 if (task
->tk_status
>= 0)
4874 switch(task
->tk_status
) {
4875 case -NFS4ERR_DELEG_REVOKED
:
4876 case -NFS4ERR_ADMIN_REVOKED
:
4877 case -NFS4ERR_BAD_STATEID
:
4878 case -NFS4ERR_OPENMODE
:
4881 if (nfs4_schedule_stateid_recovery(server
, state
) < 0)
4882 goto recovery_failed
;
4883 goto wait_on_recovery
;
4884 case -NFS4ERR_EXPIRED
:
4885 if (state
!= NULL
) {
4886 if (nfs4_schedule_stateid_recovery(server
, state
) < 0)
4887 goto recovery_failed
;
4889 case -NFS4ERR_STALE_STATEID
:
4890 case -NFS4ERR_STALE_CLIENTID
:
4891 nfs4_schedule_lease_recovery(clp
);
4892 goto wait_on_recovery
;
4893 case -NFS4ERR_MOVED
:
4894 if (nfs4_schedule_migration_recovery(server
) < 0)
4895 goto recovery_failed
;
4896 goto wait_on_recovery
;
4897 case -NFS4ERR_LEASE_MOVED
:
4898 nfs4_schedule_lease_moved_recovery(clp
);
4899 goto wait_on_recovery
;
4900 #if defined(CONFIG_NFS_V4_1)
4901 case -NFS4ERR_BADSESSION
:
4902 case -NFS4ERR_BADSLOT
:
4903 case -NFS4ERR_BAD_HIGH_SLOT
:
4904 case -NFS4ERR_DEADSESSION
:
4905 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
4906 case -NFS4ERR_SEQ_FALSE_RETRY
:
4907 case -NFS4ERR_SEQ_MISORDERED
:
4908 dprintk("%s ERROR %d, Reset session\n", __func__
,
4910 nfs4_schedule_session_recovery(clp
->cl_session
, task
->tk_status
);
4911 goto wait_on_recovery
;
4912 #endif /* CONFIG_NFS_V4_1 */
4913 case -NFS4ERR_DELAY
:
4914 nfs_inc_server_stats(server
, NFSIOS_DELAY
);
4915 rpc_delay(task
, nfs4_update_delay(timeout
));
4917 case -NFS4ERR_GRACE
:
4918 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
4919 case -NFS4ERR_RETRY_UNCACHED_REP
:
4920 case -NFS4ERR_OLD_STATEID
:
4923 task
->tk_status
= nfs4_map_errors(task
->tk_status
);
4926 task
->tk_status
= -EIO
;
4929 rpc_sleep_on(&clp
->cl_rpcwaitq
, task
, NULL
);
4930 if (test_bit(NFS4CLNT_MANAGER_RUNNING
, &clp
->cl_state
) == 0)
4931 rpc_wake_up_queued_task(&clp
->cl_rpcwaitq
, task
);
4932 if (test_bit(NFS_MIG_FAILED
, &server
->mig_status
))
4933 goto recovery_failed
;
4935 task
->tk_status
= 0;
4939 static void nfs4_init_boot_verifier(const struct nfs_client
*clp
,
4940 nfs4_verifier
*bootverf
)
4944 if (test_bit(NFS4CLNT_PURGE_STATE
, &clp
->cl_state
)) {
4945 /* An impossible timestamp guarantees this value
4946 * will never match a generated boot time. */
4948 verf
[1] = cpu_to_be32(NSEC_PER_SEC
+ 1);
4950 struct nfs_net
*nn
= net_generic(clp
->cl_net
, nfs_net_id
);
4951 verf
[0] = cpu_to_be32(nn
->boot_time
.tv_sec
);
4952 verf
[1] = cpu_to_be32(nn
->boot_time
.tv_nsec
);
4954 memcpy(bootverf
->data
, verf
, sizeof(bootverf
->data
));
4958 nfs4_init_nonuniform_client_string(struct nfs_client
*clp
,
4959 char *buf
, size_t len
)
4961 unsigned int result
;
4963 if (clp
->cl_owner_id
!= NULL
)
4964 return strlcpy(buf
, clp
->cl_owner_id
, len
);
4967 result
= scnprintf(buf
, len
, "Linux NFSv4.0 %s/%s %s",
4969 rpc_peeraddr2str(clp
->cl_rpcclient
,
4971 rpc_peeraddr2str(clp
->cl_rpcclient
,
4972 RPC_DISPLAY_PROTO
));
4974 clp
->cl_owner_id
= kstrdup(buf
, GFP_KERNEL
);
4979 nfs4_init_uniform_client_string(struct nfs_client
*clp
,
4980 char *buf
, size_t len
)
4982 const char *nodename
= clp
->cl_rpcclient
->cl_nodename
;
4983 unsigned int result
;
4985 if (clp
->cl_owner_id
!= NULL
)
4986 return strlcpy(buf
, clp
->cl_owner_id
, len
);
4988 if (nfs4_client_id_uniquifier
[0] != '\0')
4989 result
= scnprintf(buf
, len
, "Linux NFSv%u.%u %s/%s",
4990 clp
->rpc_ops
->version
,
4991 clp
->cl_minorversion
,
4992 nfs4_client_id_uniquifier
,
4995 result
= scnprintf(buf
, len
, "Linux NFSv%u.%u %s",
4996 clp
->rpc_ops
->version
, clp
->cl_minorversion
,
4998 clp
->cl_owner_id
= kstrdup(buf
, GFP_KERNEL
);
5003 * nfs4_callback_up_net() starts only "tcp" and "tcp6" callback
5004 * services. Advertise one based on the address family of the
5008 nfs4_init_callback_netid(const struct nfs_client
*clp
, char *buf
, size_t len
)
5010 if (strchr(clp
->cl_ipaddr
, ':') != NULL
)
5011 return scnprintf(buf
, len
, "tcp6");
5013 return scnprintf(buf
, len
, "tcp");
5016 static void nfs4_setclientid_done(struct rpc_task
*task
, void *calldata
)
5018 struct nfs4_setclientid
*sc
= calldata
;
5020 if (task
->tk_status
== 0)
5021 sc
->sc_cred
= get_rpccred(task
->tk_rqstp
->rq_cred
);
5024 static const struct rpc_call_ops nfs4_setclientid_ops
= {
5025 .rpc_call_done
= nfs4_setclientid_done
,
5029 * nfs4_proc_setclientid - Negotiate client ID
5030 * @clp: state data structure
5031 * @program: RPC program for NFSv4 callback service
5032 * @port: IP port number for NFS4 callback service
5033 * @cred: RPC credential to use for this call
5034 * @res: where to place the result
5036 * Returns zero, a negative errno, or a negative NFS4ERR status code.
5038 int nfs4_proc_setclientid(struct nfs_client
*clp
, u32 program
,
5039 unsigned short port
, struct rpc_cred
*cred
,
5040 struct nfs4_setclientid_res
*res
)
5042 nfs4_verifier sc_verifier
;
5043 struct nfs4_setclientid setclientid
= {
5044 .sc_verifier
= &sc_verifier
,
5046 .sc_cb_ident
= clp
->cl_cb_ident
,
5048 struct rpc_message msg
= {
5049 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETCLIENTID
],
5050 .rpc_argp
= &setclientid
,
5054 struct rpc_task
*task
;
5055 struct rpc_task_setup task_setup_data
= {
5056 .rpc_client
= clp
->cl_rpcclient
,
5057 .rpc_message
= &msg
,
5058 .callback_ops
= &nfs4_setclientid_ops
,
5059 .callback_data
= &setclientid
,
5060 .flags
= RPC_TASK_TIMEOUT
,
5064 /* nfs_client_id4 */
5065 nfs4_init_boot_verifier(clp
, &sc_verifier
);
5066 if (test_bit(NFS_CS_MIGRATION
, &clp
->cl_flags
))
5067 setclientid
.sc_name_len
=
5068 nfs4_init_uniform_client_string(clp
,
5069 setclientid
.sc_name
,
5070 sizeof(setclientid
.sc_name
));
5072 setclientid
.sc_name_len
=
5073 nfs4_init_nonuniform_client_string(clp
,
5074 setclientid
.sc_name
,
5075 sizeof(setclientid
.sc_name
));
5077 setclientid
.sc_netid_len
=
5078 nfs4_init_callback_netid(clp
,
5079 setclientid
.sc_netid
,
5080 sizeof(setclientid
.sc_netid
));
5081 setclientid
.sc_uaddr_len
= scnprintf(setclientid
.sc_uaddr
,
5082 sizeof(setclientid
.sc_uaddr
), "%s.%u.%u",
5083 clp
->cl_ipaddr
, port
>> 8, port
& 255);
5085 dprintk("NFS call setclientid auth=%s, '%.*s'\n",
5086 clp
->cl_rpcclient
->cl_auth
->au_ops
->au_name
,
5087 setclientid
.sc_name_len
, setclientid
.sc_name
);
5088 task
= rpc_run_task(&task_setup_data
);
5090 status
= PTR_ERR(task
);
5093 status
= task
->tk_status
;
5094 if (setclientid
.sc_cred
) {
5095 clp
->cl_acceptor
= rpcauth_stringify_acceptor(setclientid
.sc_cred
);
5096 put_rpccred(setclientid
.sc_cred
);
5100 trace_nfs4_setclientid(clp
, status
);
5101 dprintk("NFS reply setclientid: %d\n", status
);
5106 * nfs4_proc_setclientid_confirm - Confirm client ID
5107 * @clp: state data structure
5108 * @res: result of a previous SETCLIENTID
5109 * @cred: RPC credential to use for this call
5111 * Returns zero, a negative errno, or a negative NFS4ERR status code.
5113 int nfs4_proc_setclientid_confirm(struct nfs_client
*clp
,
5114 struct nfs4_setclientid_res
*arg
,
5115 struct rpc_cred
*cred
)
5117 struct rpc_message msg
= {
5118 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETCLIENTID_CONFIRM
],
5124 dprintk("NFS call setclientid_confirm auth=%s, (client ID %llx)\n",
5125 clp
->cl_rpcclient
->cl_auth
->au_ops
->au_name
,
5127 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
5128 trace_nfs4_setclientid_confirm(clp
, status
);
5129 dprintk("NFS reply setclientid_confirm: %d\n", status
);
5133 struct nfs4_delegreturndata
{
5134 struct nfs4_delegreturnargs args
;
5135 struct nfs4_delegreturnres res
;
5137 nfs4_stateid stateid
;
5138 unsigned long timestamp
;
5139 struct nfs_fattr fattr
;
5141 struct inode
*inode
;
5146 static void nfs4_delegreturn_done(struct rpc_task
*task
, void *calldata
)
5148 struct nfs4_delegreturndata
*data
= calldata
;
5150 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
5153 trace_nfs4_delegreturn_exit(&data
->args
, &data
->res
, task
->tk_status
);
5154 switch (task
->tk_status
) {
5156 renew_lease(data
->res
.server
, data
->timestamp
);
5157 case -NFS4ERR_ADMIN_REVOKED
:
5158 case -NFS4ERR_DELEG_REVOKED
:
5159 case -NFS4ERR_BAD_STATEID
:
5160 case -NFS4ERR_OLD_STATEID
:
5161 case -NFS4ERR_STALE_STATEID
:
5162 case -NFS4ERR_EXPIRED
:
5163 task
->tk_status
= 0;
5165 pnfs_roc_set_barrier(data
->inode
, data
->roc_barrier
);
5168 if (nfs4_async_handle_error(task
, data
->res
.server
,
5169 NULL
, NULL
) == -EAGAIN
) {
5170 rpc_restart_call_prepare(task
);
5174 data
->rpc_status
= task
->tk_status
;
5177 static void nfs4_delegreturn_release(void *calldata
)
5179 struct nfs4_delegreturndata
*data
= calldata
;
5180 struct inode
*inode
= data
->inode
;
5184 pnfs_roc_release(inode
);
5185 nfs_iput_and_deactive(inode
);
5190 static void nfs4_delegreturn_prepare(struct rpc_task
*task
, void *data
)
5192 struct nfs4_delegreturndata
*d_data
;
5194 d_data
= (struct nfs4_delegreturndata
*)data
;
5197 pnfs_roc_drain(d_data
->inode
, &d_data
->roc_barrier
, task
))
5200 nfs4_setup_sequence(d_data
->res
.server
,
5201 &d_data
->args
.seq_args
,
5202 &d_data
->res
.seq_res
,
5206 static const struct rpc_call_ops nfs4_delegreturn_ops
= {
5207 .rpc_call_prepare
= nfs4_delegreturn_prepare
,
5208 .rpc_call_done
= nfs4_delegreturn_done
,
5209 .rpc_release
= nfs4_delegreturn_release
,
5212 static int _nfs4_proc_delegreturn(struct inode
*inode
, struct rpc_cred
*cred
, const nfs4_stateid
*stateid
, int issync
)
5214 struct nfs4_delegreturndata
*data
;
5215 struct nfs_server
*server
= NFS_SERVER(inode
);
5216 struct rpc_task
*task
;
5217 struct rpc_message msg
= {
5218 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DELEGRETURN
],
5221 struct rpc_task_setup task_setup_data
= {
5222 .rpc_client
= server
->client
,
5223 .rpc_message
= &msg
,
5224 .callback_ops
= &nfs4_delegreturn_ops
,
5225 .flags
= RPC_TASK_ASYNC
,
5229 data
= kzalloc(sizeof(*data
), GFP_NOFS
);
5232 nfs4_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
5233 data
->args
.fhandle
= &data
->fh
;
5234 data
->args
.stateid
= &data
->stateid
;
5235 data
->args
.bitmask
= server
->cache_consistency_bitmask
;
5236 nfs_copy_fh(&data
->fh
, NFS_FH(inode
));
5237 nfs4_stateid_copy(&data
->stateid
, stateid
);
5238 data
->res
.fattr
= &data
->fattr
;
5239 data
->res
.server
= server
;
5240 nfs_fattr_init(data
->res
.fattr
);
5241 data
->timestamp
= jiffies
;
5242 data
->rpc_status
= 0;
5243 data
->inode
= nfs_igrab_and_active(inode
);
5245 data
->roc
= nfs4_roc(inode
);
5247 task_setup_data
.callback_data
= data
;
5248 msg
.rpc_argp
= &data
->args
;
5249 msg
.rpc_resp
= &data
->res
;
5250 task
= rpc_run_task(&task_setup_data
);
5252 return PTR_ERR(task
);
5255 status
= nfs4_wait_for_completion_rpc_task(task
);
5258 status
= data
->rpc_status
;
5260 nfs_post_op_update_inode_force_wcc(inode
, &data
->fattr
);
5262 nfs_refresh_inode(inode
, &data
->fattr
);
5268 int nfs4_proc_delegreturn(struct inode
*inode
, struct rpc_cred
*cred
, const nfs4_stateid
*stateid
, int issync
)
5270 struct nfs_server
*server
= NFS_SERVER(inode
);
5271 struct nfs4_exception exception
= { };
5274 err
= _nfs4_proc_delegreturn(inode
, cred
, stateid
, issync
);
5275 trace_nfs4_delegreturn(inode
, err
);
5277 case -NFS4ERR_STALE_STATEID
:
5278 case -NFS4ERR_EXPIRED
:
5282 err
= nfs4_handle_exception(server
, err
, &exception
);
5283 } while (exception
.retry
);
5287 #define NFS4_LOCK_MINTIMEOUT (1 * HZ)
5288 #define NFS4_LOCK_MAXTIMEOUT (30 * HZ)
5291 * sleep, with exponential backoff, and retry the LOCK operation.
5293 static unsigned long
5294 nfs4_set_lock_task_retry(unsigned long timeout
)
5296 freezable_schedule_timeout_killable_unsafe(timeout
);
5298 if (timeout
> NFS4_LOCK_MAXTIMEOUT
)
5299 return NFS4_LOCK_MAXTIMEOUT
;
5303 static int _nfs4_proc_getlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
5305 struct inode
*inode
= state
->inode
;
5306 struct nfs_server
*server
= NFS_SERVER(inode
);
5307 struct nfs_client
*clp
= server
->nfs_client
;
5308 struct nfs_lockt_args arg
= {
5309 .fh
= NFS_FH(inode
),
5312 struct nfs_lockt_res res
= {
5315 struct rpc_message msg
= {
5316 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCKT
],
5319 .rpc_cred
= state
->owner
->so_cred
,
5321 struct nfs4_lock_state
*lsp
;
5324 arg
.lock_owner
.clientid
= clp
->cl_clientid
;
5325 status
= nfs4_set_lock_state(state
, request
);
5328 lsp
= request
->fl_u
.nfs4_fl
.owner
;
5329 arg
.lock_owner
.id
= lsp
->ls_seqid
.owner_id
;
5330 arg
.lock_owner
.s_dev
= server
->s_dev
;
5331 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
5334 request
->fl_type
= F_UNLCK
;
5336 case -NFS4ERR_DENIED
:
5339 request
->fl_ops
->fl_release_private(request
);
5340 request
->fl_ops
= NULL
;
5345 static int nfs4_proc_getlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
5347 struct nfs4_exception exception
= { };
5351 err
= _nfs4_proc_getlk(state
, cmd
, request
);
5352 trace_nfs4_get_lock(request
, state
, cmd
, err
);
5353 err
= nfs4_handle_exception(NFS_SERVER(state
->inode
), err
,
5355 } while (exception
.retry
);
5359 static int do_vfs_lock(struct file
*file
, struct file_lock
*fl
)
5362 switch (fl
->fl_flags
& (FL_POSIX
|FL_FLOCK
)) {
5364 res
= posix_lock_file_wait(file
, fl
);
5367 res
= flock_lock_file_wait(file
, fl
);
5375 struct nfs4_unlockdata
{
5376 struct nfs_locku_args arg
;
5377 struct nfs_locku_res res
;
5378 struct nfs4_lock_state
*lsp
;
5379 struct nfs_open_context
*ctx
;
5380 struct file_lock fl
;
5381 const struct nfs_server
*server
;
5382 unsigned long timestamp
;
5385 static struct nfs4_unlockdata
*nfs4_alloc_unlockdata(struct file_lock
*fl
,
5386 struct nfs_open_context
*ctx
,
5387 struct nfs4_lock_state
*lsp
,
5388 struct nfs_seqid
*seqid
)
5390 struct nfs4_unlockdata
*p
;
5391 struct inode
*inode
= lsp
->ls_state
->inode
;
5393 p
= kzalloc(sizeof(*p
), GFP_NOFS
);
5396 p
->arg
.fh
= NFS_FH(inode
);
5398 p
->arg
.seqid
= seqid
;
5399 p
->res
.seqid
= seqid
;
5401 atomic_inc(&lsp
->ls_count
);
5402 /* Ensure we don't close file until we're done freeing locks! */
5403 p
->ctx
= get_nfs_open_context(ctx
);
5404 memcpy(&p
->fl
, fl
, sizeof(p
->fl
));
5405 p
->server
= NFS_SERVER(inode
);
5409 static void nfs4_locku_release_calldata(void *data
)
5411 struct nfs4_unlockdata
*calldata
= data
;
5412 nfs_free_seqid(calldata
->arg
.seqid
);
5413 nfs4_put_lock_state(calldata
->lsp
);
5414 put_nfs_open_context(calldata
->ctx
);
5418 static void nfs4_locku_done(struct rpc_task
*task
, void *data
)
5420 struct nfs4_unlockdata
*calldata
= data
;
5422 if (!nfs4_sequence_done(task
, &calldata
->res
.seq_res
))
5424 switch (task
->tk_status
) {
5426 renew_lease(calldata
->server
, calldata
->timestamp
);
5427 do_vfs_lock(calldata
->fl
.fl_file
, &calldata
->fl
);
5428 if (nfs4_update_lock_stateid(calldata
->lsp
,
5429 &calldata
->res
.stateid
))
5431 case -NFS4ERR_BAD_STATEID
:
5432 case -NFS4ERR_OLD_STATEID
:
5433 case -NFS4ERR_STALE_STATEID
:
5434 case -NFS4ERR_EXPIRED
:
5435 if (!nfs4_stateid_match(&calldata
->arg
.stateid
,
5436 &calldata
->lsp
->ls_stateid
))
5437 rpc_restart_call_prepare(task
);
5440 if (nfs4_async_handle_error(task
, calldata
->server
,
5441 NULL
, NULL
) == -EAGAIN
)
5442 rpc_restart_call_prepare(task
);
5444 nfs_release_seqid(calldata
->arg
.seqid
);
5447 static void nfs4_locku_prepare(struct rpc_task
*task
, void *data
)
5449 struct nfs4_unlockdata
*calldata
= data
;
5451 if (nfs_wait_on_sequence(calldata
->arg
.seqid
, task
) != 0)
5453 nfs4_stateid_copy(&calldata
->arg
.stateid
, &calldata
->lsp
->ls_stateid
);
5454 if (test_bit(NFS_LOCK_INITIALIZED
, &calldata
->lsp
->ls_flags
) == 0) {
5455 /* Note: exit _without_ running nfs4_locku_done */
5458 calldata
->timestamp
= jiffies
;
5459 if (nfs4_setup_sequence(calldata
->server
,
5460 &calldata
->arg
.seq_args
,
5461 &calldata
->res
.seq_res
,
5463 nfs_release_seqid(calldata
->arg
.seqid
);
5466 task
->tk_action
= NULL
;
5468 nfs4_sequence_done(task
, &calldata
->res
.seq_res
);
5471 static const struct rpc_call_ops nfs4_locku_ops
= {
5472 .rpc_call_prepare
= nfs4_locku_prepare
,
5473 .rpc_call_done
= nfs4_locku_done
,
5474 .rpc_release
= nfs4_locku_release_calldata
,
5477 static struct rpc_task
*nfs4_do_unlck(struct file_lock
*fl
,
5478 struct nfs_open_context
*ctx
,
5479 struct nfs4_lock_state
*lsp
,
5480 struct nfs_seqid
*seqid
)
5482 struct nfs4_unlockdata
*data
;
5483 struct rpc_message msg
= {
5484 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCKU
],
5485 .rpc_cred
= ctx
->cred
,
5487 struct rpc_task_setup task_setup_data
= {
5488 .rpc_client
= NFS_CLIENT(lsp
->ls_state
->inode
),
5489 .rpc_message
= &msg
,
5490 .callback_ops
= &nfs4_locku_ops
,
5491 .workqueue
= nfsiod_workqueue
,
5492 .flags
= RPC_TASK_ASYNC
,
5495 nfs4_state_protect(NFS_SERVER(lsp
->ls_state
->inode
)->nfs_client
,
5496 NFS_SP4_MACH_CRED_CLEANUP
, &task_setup_data
.rpc_client
, &msg
);
5498 /* Ensure this is an unlock - when canceling a lock, the
5499 * canceled lock is passed in, and it won't be an unlock.
5501 fl
->fl_type
= F_UNLCK
;
5503 data
= nfs4_alloc_unlockdata(fl
, ctx
, lsp
, seqid
);
5505 nfs_free_seqid(seqid
);
5506 return ERR_PTR(-ENOMEM
);
5509 nfs4_init_sequence(&data
->arg
.seq_args
, &data
->res
.seq_res
, 1);
5510 msg
.rpc_argp
= &data
->arg
;
5511 msg
.rpc_resp
= &data
->res
;
5512 task_setup_data
.callback_data
= data
;
5513 return rpc_run_task(&task_setup_data
);
5516 static int nfs4_proc_unlck(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
5518 struct inode
*inode
= state
->inode
;
5519 struct nfs4_state_owner
*sp
= state
->owner
;
5520 struct nfs_inode
*nfsi
= NFS_I(inode
);
5521 struct nfs_seqid
*seqid
;
5522 struct nfs4_lock_state
*lsp
;
5523 struct rpc_task
*task
;
5524 struct nfs_seqid
*(*alloc_seqid
)(struct nfs_seqid_counter
*, gfp_t
);
5526 unsigned char fl_flags
= request
->fl_flags
;
5528 status
= nfs4_set_lock_state(state
, request
);
5529 /* Unlock _before_ we do the RPC call */
5530 request
->fl_flags
|= FL_EXISTS
;
5531 /* Exclude nfs_delegation_claim_locks() */
5532 mutex_lock(&sp
->so_delegreturn_mutex
);
5533 /* Exclude nfs4_reclaim_open_stateid() - note nesting! */
5534 down_read(&nfsi
->rwsem
);
5535 if (do_vfs_lock(request
->fl_file
, request
) == -ENOENT
) {
5536 up_read(&nfsi
->rwsem
);
5537 mutex_unlock(&sp
->so_delegreturn_mutex
);
5540 up_read(&nfsi
->rwsem
);
5541 mutex_unlock(&sp
->so_delegreturn_mutex
);
5544 /* Is this a delegated lock? */
5545 lsp
= request
->fl_u
.nfs4_fl
.owner
;
5546 if (test_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
) == 0)
5548 alloc_seqid
= NFS_SERVER(inode
)->nfs_client
->cl_mvops
->alloc_seqid
;
5549 seqid
= alloc_seqid(&lsp
->ls_seqid
, GFP_KERNEL
);
5553 task
= nfs4_do_unlck(request
, nfs_file_open_context(request
->fl_file
), lsp
, seqid
);
5554 status
= PTR_ERR(task
);
5557 status
= nfs4_wait_for_completion_rpc_task(task
);
5560 request
->fl_flags
= fl_flags
;
5561 trace_nfs4_unlock(request
, state
, F_SETLK
, status
);
5565 struct nfs4_lockdata
{
5566 struct nfs_lock_args arg
;
5567 struct nfs_lock_res res
;
5568 struct nfs4_lock_state
*lsp
;
5569 struct nfs_open_context
*ctx
;
5570 struct file_lock fl
;
5571 unsigned long timestamp
;
5574 struct nfs_server
*server
;
5577 static struct nfs4_lockdata
*nfs4_alloc_lockdata(struct file_lock
*fl
,
5578 struct nfs_open_context
*ctx
, struct nfs4_lock_state
*lsp
,
5581 struct nfs4_lockdata
*p
;
5582 struct inode
*inode
= lsp
->ls_state
->inode
;
5583 struct nfs_server
*server
= NFS_SERVER(inode
);
5584 struct nfs_seqid
*(*alloc_seqid
)(struct nfs_seqid_counter
*, gfp_t
);
5586 p
= kzalloc(sizeof(*p
), gfp_mask
);
5590 p
->arg
.fh
= NFS_FH(inode
);
5592 p
->arg
.open_seqid
= nfs_alloc_seqid(&lsp
->ls_state
->owner
->so_seqid
, gfp_mask
);
5593 if (IS_ERR(p
->arg
.open_seqid
))
5595 alloc_seqid
= server
->nfs_client
->cl_mvops
->alloc_seqid
;
5596 p
->arg
.lock_seqid
= alloc_seqid(&lsp
->ls_seqid
, gfp_mask
);
5597 if (IS_ERR(p
->arg
.lock_seqid
))
5598 goto out_free_seqid
;
5599 p
->arg
.lock_owner
.clientid
= server
->nfs_client
->cl_clientid
;
5600 p
->arg
.lock_owner
.id
= lsp
->ls_seqid
.owner_id
;
5601 p
->arg
.lock_owner
.s_dev
= server
->s_dev
;
5602 p
->res
.lock_seqid
= p
->arg
.lock_seqid
;
5605 atomic_inc(&lsp
->ls_count
);
5606 p
->ctx
= get_nfs_open_context(ctx
);
5607 memcpy(&p
->fl
, fl
, sizeof(p
->fl
));
5610 nfs_free_seqid(p
->arg
.open_seqid
);
5616 static void nfs4_lock_prepare(struct rpc_task
*task
, void *calldata
)
5618 struct nfs4_lockdata
*data
= calldata
;
5619 struct nfs4_state
*state
= data
->lsp
->ls_state
;
5621 dprintk("%s: begin!\n", __func__
);
5622 if (nfs_wait_on_sequence(data
->arg
.lock_seqid
, task
) != 0)
5624 /* Do we need to do an open_to_lock_owner? */
5625 if (!test_bit(NFS_LOCK_INITIALIZED
, &data
->lsp
->ls_flags
)) {
5626 if (nfs_wait_on_sequence(data
->arg
.open_seqid
, task
) != 0) {
5627 goto out_release_lock_seqid
;
5629 nfs4_stateid_copy(&data
->arg
.open_stateid
,
5630 &state
->open_stateid
);
5631 data
->arg
.new_lock_owner
= 1;
5632 data
->res
.open_seqid
= data
->arg
.open_seqid
;
5634 data
->arg
.new_lock_owner
= 0;
5635 nfs4_stateid_copy(&data
->arg
.lock_stateid
,
5636 &data
->lsp
->ls_stateid
);
5638 if (!nfs4_valid_open_stateid(state
)) {
5639 data
->rpc_status
= -EBADF
;
5640 task
->tk_action
= NULL
;
5641 goto out_release_open_seqid
;
5643 data
->timestamp
= jiffies
;
5644 if (nfs4_setup_sequence(data
->server
,
5645 &data
->arg
.seq_args
,
5649 out_release_open_seqid
:
5650 nfs_release_seqid(data
->arg
.open_seqid
);
5651 out_release_lock_seqid
:
5652 nfs_release_seqid(data
->arg
.lock_seqid
);
5654 nfs4_sequence_done(task
, &data
->res
.seq_res
);
5655 dprintk("%s: done!, ret = %d\n", __func__
, data
->rpc_status
);
5658 static void nfs4_lock_done(struct rpc_task
*task
, void *calldata
)
5660 struct nfs4_lockdata
*data
= calldata
;
5661 struct nfs4_lock_state
*lsp
= data
->lsp
;
5663 dprintk("%s: begin!\n", __func__
);
5665 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
5668 data
->rpc_status
= task
->tk_status
;
5669 switch (task
->tk_status
) {
5671 renew_lease(NFS_SERVER(d_inode(data
->ctx
->dentry
)),
5673 if (data
->arg
.new_lock
) {
5674 data
->fl
.fl_flags
&= ~(FL_SLEEP
| FL_ACCESS
);
5675 if (do_vfs_lock(data
->fl
.fl_file
, &data
->fl
) < 0) {
5676 rpc_restart_call_prepare(task
);
5680 if (data
->arg
.new_lock_owner
!= 0) {
5681 nfs_confirm_seqid(&lsp
->ls_seqid
, 0);
5682 nfs4_stateid_copy(&lsp
->ls_stateid
, &data
->res
.stateid
);
5683 set_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
);
5684 } else if (!nfs4_update_lock_stateid(lsp
, &data
->res
.stateid
))
5685 rpc_restart_call_prepare(task
);
5687 case -NFS4ERR_BAD_STATEID
:
5688 case -NFS4ERR_OLD_STATEID
:
5689 case -NFS4ERR_STALE_STATEID
:
5690 case -NFS4ERR_EXPIRED
:
5691 if (data
->arg
.new_lock_owner
!= 0) {
5692 if (!nfs4_stateid_match(&data
->arg
.open_stateid
,
5693 &lsp
->ls_state
->open_stateid
))
5694 rpc_restart_call_prepare(task
);
5695 } else if (!nfs4_stateid_match(&data
->arg
.lock_stateid
,
5697 rpc_restart_call_prepare(task
);
5699 dprintk("%s: done, ret = %d!\n", __func__
, data
->rpc_status
);
5702 static void nfs4_lock_release(void *calldata
)
5704 struct nfs4_lockdata
*data
= calldata
;
5706 dprintk("%s: begin!\n", __func__
);
5707 nfs_free_seqid(data
->arg
.open_seqid
);
5708 if (data
->cancelled
!= 0) {
5709 struct rpc_task
*task
;
5710 task
= nfs4_do_unlck(&data
->fl
, data
->ctx
, data
->lsp
,
5711 data
->arg
.lock_seqid
);
5713 rpc_put_task_async(task
);
5714 dprintk("%s: cancelling lock!\n", __func__
);
5716 nfs_free_seqid(data
->arg
.lock_seqid
);
5717 nfs4_put_lock_state(data
->lsp
);
5718 put_nfs_open_context(data
->ctx
);
5720 dprintk("%s: done!\n", __func__
);
5723 static const struct rpc_call_ops nfs4_lock_ops
= {
5724 .rpc_call_prepare
= nfs4_lock_prepare
,
5725 .rpc_call_done
= nfs4_lock_done
,
5726 .rpc_release
= nfs4_lock_release
,
5729 static void nfs4_handle_setlk_error(struct nfs_server
*server
, struct nfs4_lock_state
*lsp
, int new_lock_owner
, int error
)
5732 case -NFS4ERR_ADMIN_REVOKED
:
5733 case -NFS4ERR_BAD_STATEID
:
5734 lsp
->ls_seqid
.flags
&= ~NFS_SEQID_CONFIRMED
;
5735 if (new_lock_owner
!= 0 ||
5736 test_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
) != 0)
5737 nfs4_schedule_stateid_recovery(server
, lsp
->ls_state
);
5739 case -NFS4ERR_STALE_STATEID
:
5740 lsp
->ls_seqid
.flags
&= ~NFS_SEQID_CONFIRMED
;
5741 case -NFS4ERR_EXPIRED
:
5742 nfs4_schedule_lease_recovery(server
->nfs_client
);
5746 static int _nfs4_do_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*fl
, int recovery_type
)
5748 struct nfs4_lockdata
*data
;
5749 struct rpc_task
*task
;
5750 struct rpc_message msg
= {
5751 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCK
],
5752 .rpc_cred
= state
->owner
->so_cred
,
5754 struct rpc_task_setup task_setup_data
= {
5755 .rpc_client
= NFS_CLIENT(state
->inode
),
5756 .rpc_message
= &msg
,
5757 .callback_ops
= &nfs4_lock_ops
,
5758 .workqueue
= nfsiod_workqueue
,
5759 .flags
= RPC_TASK_ASYNC
,
5763 dprintk("%s: begin!\n", __func__
);
5764 data
= nfs4_alloc_lockdata(fl
, nfs_file_open_context(fl
->fl_file
),
5765 fl
->fl_u
.nfs4_fl
.owner
,
5766 recovery_type
== NFS_LOCK_NEW
? GFP_KERNEL
: GFP_NOFS
);
5770 data
->arg
.block
= 1;
5771 nfs4_init_sequence(&data
->arg
.seq_args
, &data
->res
.seq_res
, 1);
5772 msg
.rpc_argp
= &data
->arg
;
5773 msg
.rpc_resp
= &data
->res
;
5774 task_setup_data
.callback_data
= data
;
5775 if (recovery_type
> NFS_LOCK_NEW
) {
5776 if (recovery_type
== NFS_LOCK_RECLAIM
)
5777 data
->arg
.reclaim
= NFS_LOCK_RECLAIM
;
5778 nfs4_set_sequence_privileged(&data
->arg
.seq_args
);
5780 data
->arg
.new_lock
= 1;
5781 task
= rpc_run_task(&task_setup_data
);
5783 return PTR_ERR(task
);
5784 ret
= nfs4_wait_for_completion_rpc_task(task
);
5786 ret
= data
->rpc_status
;
5788 nfs4_handle_setlk_error(data
->server
, data
->lsp
,
5789 data
->arg
.new_lock_owner
, ret
);
5791 data
->cancelled
= 1;
5793 dprintk("%s: done, ret = %d!\n", __func__
, ret
);
5797 static int nfs4_lock_reclaim(struct nfs4_state
*state
, struct file_lock
*request
)
5799 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
5800 struct nfs4_exception exception
= {
5801 .inode
= state
->inode
,
5806 /* Cache the lock if possible... */
5807 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) != 0)
5809 err
= _nfs4_do_setlk(state
, F_SETLK
, request
, NFS_LOCK_RECLAIM
);
5810 trace_nfs4_lock_reclaim(request
, state
, F_SETLK
, err
);
5811 if (err
!= -NFS4ERR_DELAY
)
5813 nfs4_handle_exception(server
, err
, &exception
);
5814 } while (exception
.retry
);
5818 static int nfs4_lock_expired(struct nfs4_state
*state
, struct file_lock
*request
)
5820 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
5821 struct nfs4_exception exception
= {
5822 .inode
= state
->inode
,
5826 err
= nfs4_set_lock_state(state
, request
);
5829 if (!recover_lost_locks
) {
5830 set_bit(NFS_LOCK_LOST
, &request
->fl_u
.nfs4_fl
.owner
->ls_flags
);
5834 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) != 0)
5836 err
= _nfs4_do_setlk(state
, F_SETLK
, request
, NFS_LOCK_EXPIRED
);
5837 trace_nfs4_lock_expired(request
, state
, F_SETLK
, err
);
5841 case -NFS4ERR_GRACE
:
5842 case -NFS4ERR_DELAY
:
5843 nfs4_handle_exception(server
, err
, &exception
);
5846 } while (exception
.retry
);
5851 #if defined(CONFIG_NFS_V4_1)
5853 * nfs41_check_expired_locks - possibly free a lock stateid
5855 * @state: NFSv4 state for an inode
5857 * Returns NFS_OK if recovery for this stateid is now finished.
5858 * Otherwise a negative NFS4ERR value is returned.
5860 static int nfs41_check_expired_locks(struct nfs4_state
*state
)
5862 int status
, ret
= -NFS4ERR_BAD_STATEID
;
5863 struct nfs4_lock_state
*lsp
;
5864 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
5866 list_for_each_entry(lsp
, &state
->lock_states
, ls_locks
) {
5867 if (test_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
)) {
5868 struct rpc_cred
*cred
= lsp
->ls_state
->owner
->so_cred
;
5870 status
= nfs41_test_stateid(server
,
5873 trace_nfs4_test_lock_stateid(state
, lsp
, status
);
5874 if (status
!= NFS_OK
) {
5875 /* Free the stateid unless the server
5876 * informs us the stateid is unrecognized. */
5877 if (status
!= -NFS4ERR_BAD_STATEID
)
5878 nfs41_free_stateid(server
,
5881 clear_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
);
5890 static int nfs41_lock_expired(struct nfs4_state
*state
, struct file_lock
*request
)
5892 int status
= NFS_OK
;
5894 if (test_bit(LK_STATE_IN_USE
, &state
->flags
))
5895 status
= nfs41_check_expired_locks(state
);
5896 if (status
!= NFS_OK
)
5897 status
= nfs4_lock_expired(state
, request
);
5902 static int _nfs4_proc_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
5904 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
5905 unsigned char fl_flags
= request
->fl_flags
;
5906 int status
= -ENOLCK
;
5908 if ((fl_flags
& FL_POSIX
) &&
5909 !test_bit(NFS_STATE_POSIX_LOCKS
, &state
->flags
))
5911 /* Is this a delegated open? */
5912 status
= nfs4_set_lock_state(state
, request
);
5915 request
->fl_flags
|= FL_ACCESS
;
5916 status
= do_vfs_lock(request
->fl_file
, request
);
5919 down_read(&nfsi
->rwsem
);
5920 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
)) {
5921 /* Yes: cache locks! */
5922 /* ...but avoid races with delegation recall... */
5923 request
->fl_flags
= fl_flags
& ~FL_SLEEP
;
5924 status
= do_vfs_lock(request
->fl_file
, request
);
5925 up_read(&nfsi
->rwsem
);
5928 up_read(&nfsi
->rwsem
);
5929 status
= _nfs4_do_setlk(state
, cmd
, request
, NFS_LOCK_NEW
);
5931 request
->fl_flags
= fl_flags
;
5935 static int nfs4_proc_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
5937 struct nfs4_exception exception
= {
5939 .inode
= state
->inode
,
5944 err
= _nfs4_proc_setlk(state
, cmd
, request
);
5945 trace_nfs4_set_lock(request
, state
, cmd
, err
);
5946 if (err
== -NFS4ERR_DENIED
)
5948 err
= nfs4_handle_exception(NFS_SERVER(state
->inode
),
5950 } while (exception
.retry
);
5955 nfs4_proc_lock(struct file
*filp
, int cmd
, struct file_lock
*request
)
5957 struct nfs_open_context
*ctx
;
5958 struct nfs4_state
*state
;
5959 unsigned long timeout
= NFS4_LOCK_MINTIMEOUT
;
5962 /* verify open state */
5963 ctx
= nfs_file_open_context(filp
);
5966 if (request
->fl_start
< 0 || request
->fl_end
< 0)
5969 if (IS_GETLK(cmd
)) {
5971 return nfs4_proc_getlk(state
, F_GETLK
, request
);
5975 if (!(IS_SETLK(cmd
) || IS_SETLKW(cmd
)))
5978 if (request
->fl_type
== F_UNLCK
) {
5980 return nfs4_proc_unlck(state
, cmd
, request
);
5987 * Don't rely on the VFS having checked the file open mode,
5988 * since it won't do this for flock() locks.
5990 switch (request
->fl_type
) {
5992 if (!(filp
->f_mode
& FMODE_READ
))
5996 if (!(filp
->f_mode
& FMODE_WRITE
))
6001 status
= nfs4_proc_setlk(state
, cmd
, request
);
6002 if ((status
!= -EAGAIN
) || IS_SETLK(cmd
))
6004 timeout
= nfs4_set_lock_task_retry(timeout
);
6005 status
= -ERESTARTSYS
;
6008 } while(status
< 0);
6012 int nfs4_lock_delegation_recall(struct file_lock
*fl
, struct nfs4_state
*state
, const nfs4_stateid
*stateid
)
6014 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
6017 err
= nfs4_set_lock_state(state
, fl
);
6020 err
= _nfs4_do_setlk(state
, F_SETLK
, fl
, NFS_LOCK_NEW
);
6021 return nfs4_handle_delegation_recall_error(server
, state
, stateid
, err
);
6024 struct nfs_release_lockowner_data
{
6025 struct nfs4_lock_state
*lsp
;
6026 struct nfs_server
*server
;
6027 struct nfs_release_lockowner_args args
;
6028 struct nfs_release_lockowner_res res
;
6029 unsigned long timestamp
;
6032 static void nfs4_release_lockowner_prepare(struct rpc_task
*task
, void *calldata
)
6034 struct nfs_release_lockowner_data
*data
= calldata
;
6035 struct nfs_server
*server
= data
->server
;
6036 nfs40_setup_sequence(server
->nfs_client
->cl_slot_tbl
,
6037 &data
->args
.seq_args
, &data
->res
.seq_res
, task
);
6038 data
->args
.lock_owner
.clientid
= server
->nfs_client
->cl_clientid
;
6039 data
->timestamp
= jiffies
;
6042 static void nfs4_release_lockowner_done(struct rpc_task
*task
, void *calldata
)
6044 struct nfs_release_lockowner_data
*data
= calldata
;
6045 struct nfs_server
*server
= data
->server
;
6047 nfs40_sequence_done(task
, &data
->res
.seq_res
);
6049 switch (task
->tk_status
) {
6051 renew_lease(server
, data
->timestamp
);
6053 case -NFS4ERR_STALE_CLIENTID
:
6054 case -NFS4ERR_EXPIRED
:
6055 nfs4_schedule_lease_recovery(server
->nfs_client
);
6057 case -NFS4ERR_LEASE_MOVED
:
6058 case -NFS4ERR_DELAY
:
6059 if (nfs4_async_handle_error(task
, server
,
6060 NULL
, NULL
) == -EAGAIN
)
6061 rpc_restart_call_prepare(task
);
6065 static void nfs4_release_lockowner_release(void *calldata
)
6067 struct nfs_release_lockowner_data
*data
= calldata
;
6068 nfs4_free_lock_state(data
->server
, data
->lsp
);
6072 static const struct rpc_call_ops nfs4_release_lockowner_ops
= {
6073 .rpc_call_prepare
= nfs4_release_lockowner_prepare
,
6074 .rpc_call_done
= nfs4_release_lockowner_done
,
6075 .rpc_release
= nfs4_release_lockowner_release
,
6079 nfs4_release_lockowner(struct nfs_server
*server
, struct nfs4_lock_state
*lsp
)
6081 struct nfs_release_lockowner_data
*data
;
6082 struct rpc_message msg
= {
6083 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RELEASE_LOCKOWNER
],
6086 if (server
->nfs_client
->cl_mvops
->minor_version
!= 0)
6089 data
= kmalloc(sizeof(*data
), GFP_NOFS
);
6093 data
->server
= server
;
6094 data
->args
.lock_owner
.clientid
= server
->nfs_client
->cl_clientid
;
6095 data
->args
.lock_owner
.id
= lsp
->ls_seqid
.owner_id
;
6096 data
->args
.lock_owner
.s_dev
= server
->s_dev
;
6098 msg
.rpc_argp
= &data
->args
;
6099 msg
.rpc_resp
= &data
->res
;
6100 nfs4_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 0);
6101 rpc_call_async(server
->client
, &msg
, 0, &nfs4_release_lockowner_ops
, data
);
6104 #define XATTR_NAME_NFSV4_ACL "system.nfs4_acl"
6106 static int nfs4_xattr_set_nfs4_acl(struct dentry
*dentry
, const char *key
,
6107 const void *buf
, size_t buflen
,
6108 int flags
, int type
)
6110 if (strcmp(key
, "") != 0)
6113 return nfs4_proc_set_acl(d_inode(dentry
), buf
, buflen
);
6116 static int nfs4_xattr_get_nfs4_acl(struct dentry
*dentry
, const char *key
,
6117 void *buf
, size_t buflen
, int type
)
6119 if (strcmp(key
, "") != 0)
6122 return nfs4_proc_get_acl(d_inode(dentry
), buf
, buflen
);
6125 static size_t nfs4_xattr_list_nfs4_acl(struct dentry
*dentry
, char *list
,
6126 size_t list_len
, const char *name
,
6127 size_t name_len
, int type
)
6129 size_t len
= sizeof(XATTR_NAME_NFSV4_ACL
);
6131 if (!nfs4_server_supports_acls(NFS_SERVER(d_inode(dentry
))))
6134 if (list
&& len
<= list_len
)
6135 memcpy(list
, XATTR_NAME_NFSV4_ACL
, len
);
6139 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
6140 static inline int nfs4_server_supports_labels(struct nfs_server
*server
)
6142 return server
->caps
& NFS_CAP_SECURITY_LABEL
;
6145 static int nfs4_xattr_set_nfs4_label(struct dentry
*dentry
, const char *key
,
6146 const void *buf
, size_t buflen
,
6147 int flags
, int type
)
6149 if (security_ismaclabel(key
))
6150 return nfs4_set_security_label(dentry
, buf
, buflen
);
6155 static int nfs4_xattr_get_nfs4_label(struct dentry
*dentry
, const char *key
,
6156 void *buf
, size_t buflen
, int type
)
6158 if (security_ismaclabel(key
))
6159 return nfs4_get_security_label(d_inode(dentry
), buf
, buflen
);
6163 static size_t nfs4_xattr_list_nfs4_label(struct dentry
*dentry
, char *list
,
6164 size_t list_len
, const char *name
,
6165 size_t name_len
, int type
)
6169 if (nfs_server_capable(d_inode(dentry
), NFS_CAP_SECURITY_LABEL
)) {
6170 len
= security_inode_listsecurity(d_inode(dentry
), NULL
, 0);
6171 if (list
&& len
<= list_len
)
6172 security_inode_listsecurity(d_inode(dentry
), list
, len
);
6177 static const struct xattr_handler nfs4_xattr_nfs4_label_handler
= {
6178 .prefix
= XATTR_SECURITY_PREFIX
,
6179 .list
= nfs4_xattr_list_nfs4_label
,
6180 .get
= nfs4_xattr_get_nfs4_label
,
6181 .set
= nfs4_xattr_set_nfs4_label
,
6187 * nfs_fhget will use either the mounted_on_fileid or the fileid
6189 static void nfs_fixup_referral_attributes(struct nfs_fattr
*fattr
)
6191 if (!(((fattr
->valid
& NFS_ATTR_FATTR_MOUNTED_ON_FILEID
) ||
6192 (fattr
->valid
& NFS_ATTR_FATTR_FILEID
)) &&
6193 (fattr
->valid
& NFS_ATTR_FATTR_FSID
) &&
6194 (fattr
->valid
& NFS_ATTR_FATTR_V4_LOCATIONS
)))
6197 fattr
->valid
|= NFS_ATTR_FATTR_TYPE
| NFS_ATTR_FATTR_MODE
|
6198 NFS_ATTR_FATTR_NLINK
| NFS_ATTR_FATTR_V4_REFERRAL
;
6199 fattr
->mode
= S_IFDIR
| S_IRUGO
| S_IXUGO
;
6203 static int _nfs4_proc_fs_locations(struct rpc_clnt
*client
, struct inode
*dir
,
6204 const struct qstr
*name
,
6205 struct nfs4_fs_locations
*fs_locations
,
6208 struct nfs_server
*server
= NFS_SERVER(dir
);
6210 [0] = FATTR4_WORD0_FSID
| FATTR4_WORD0_FS_LOCATIONS
,
6212 struct nfs4_fs_locations_arg args
= {
6213 .dir_fh
= NFS_FH(dir
),
6218 struct nfs4_fs_locations_res res
= {
6219 .fs_locations
= fs_locations
,
6221 struct rpc_message msg
= {
6222 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FS_LOCATIONS
],
6228 dprintk("%s: start\n", __func__
);
6230 /* Ask for the fileid of the absent filesystem if mounted_on_fileid
6231 * is not supported */
6232 if (NFS_SERVER(dir
)->attr_bitmask
[1] & FATTR4_WORD1_MOUNTED_ON_FILEID
)
6233 bitmask
[1] |= FATTR4_WORD1_MOUNTED_ON_FILEID
;
6235 bitmask
[0] |= FATTR4_WORD0_FILEID
;
6237 nfs_fattr_init(&fs_locations
->fattr
);
6238 fs_locations
->server
= server
;
6239 fs_locations
->nlocations
= 0;
6240 status
= nfs4_call_sync(client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
6241 dprintk("%s: returned status = %d\n", __func__
, status
);
6245 int nfs4_proc_fs_locations(struct rpc_clnt
*client
, struct inode
*dir
,
6246 const struct qstr
*name
,
6247 struct nfs4_fs_locations
*fs_locations
,
6250 struct nfs4_exception exception
= { };
6253 err
= _nfs4_proc_fs_locations(client
, dir
, name
,
6254 fs_locations
, page
);
6255 trace_nfs4_get_fs_locations(dir
, name
, err
);
6256 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
6258 } while (exception
.retry
);
6263 * This operation also signals the server that this client is
6264 * performing migration recovery. The server can stop returning
6265 * NFS4ERR_LEASE_MOVED to this client. A RENEW operation is
6266 * appended to this compound to identify the client ID which is
6267 * performing recovery.
6269 static int _nfs40_proc_get_locations(struct inode
*inode
,
6270 struct nfs4_fs_locations
*locations
,
6271 struct page
*page
, struct rpc_cred
*cred
)
6273 struct nfs_server
*server
= NFS_SERVER(inode
);
6274 struct rpc_clnt
*clnt
= server
->client
;
6276 [0] = FATTR4_WORD0_FSID
| FATTR4_WORD0_FS_LOCATIONS
,
6278 struct nfs4_fs_locations_arg args
= {
6279 .clientid
= server
->nfs_client
->cl_clientid
,
6280 .fh
= NFS_FH(inode
),
6283 .migration
= 1, /* skip LOOKUP */
6284 .renew
= 1, /* append RENEW */
6286 struct nfs4_fs_locations_res res
= {
6287 .fs_locations
= locations
,
6291 struct rpc_message msg
= {
6292 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FS_LOCATIONS
],
6297 unsigned long now
= jiffies
;
6300 nfs_fattr_init(&locations
->fattr
);
6301 locations
->server
= server
;
6302 locations
->nlocations
= 0;
6304 nfs4_init_sequence(&args
.seq_args
, &res
.seq_res
, 0);
6305 nfs4_set_sequence_privileged(&args
.seq_args
);
6306 status
= nfs4_call_sync_sequence(clnt
, server
, &msg
,
6307 &args
.seq_args
, &res
.seq_res
);
6311 renew_lease(server
, now
);
6315 #ifdef CONFIG_NFS_V4_1
6318 * This operation also signals the server that this client is
6319 * performing migration recovery. The server can stop asserting
6320 * SEQ4_STATUS_LEASE_MOVED for this client. The client ID
6321 * performing this operation is identified in the SEQUENCE
6322 * operation in this compound.
6324 * When the client supports GETATTR(fs_locations_info), it can
6325 * be plumbed in here.
6327 static int _nfs41_proc_get_locations(struct inode
*inode
,
6328 struct nfs4_fs_locations
*locations
,
6329 struct page
*page
, struct rpc_cred
*cred
)
6331 struct nfs_server
*server
= NFS_SERVER(inode
);
6332 struct rpc_clnt
*clnt
= server
->client
;
6334 [0] = FATTR4_WORD0_FSID
| FATTR4_WORD0_FS_LOCATIONS
,
6336 struct nfs4_fs_locations_arg args
= {
6337 .fh
= NFS_FH(inode
),
6340 .migration
= 1, /* skip LOOKUP */
6342 struct nfs4_fs_locations_res res
= {
6343 .fs_locations
= locations
,
6346 struct rpc_message msg
= {
6347 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FS_LOCATIONS
],
6354 nfs_fattr_init(&locations
->fattr
);
6355 locations
->server
= server
;
6356 locations
->nlocations
= 0;
6358 nfs4_init_sequence(&args
.seq_args
, &res
.seq_res
, 0);
6359 nfs4_set_sequence_privileged(&args
.seq_args
);
6360 status
= nfs4_call_sync_sequence(clnt
, server
, &msg
,
6361 &args
.seq_args
, &res
.seq_res
);
6362 if (status
== NFS4_OK
&&
6363 res
.seq_res
.sr_status_flags
& SEQ4_STATUS_LEASE_MOVED
)
6364 status
= -NFS4ERR_LEASE_MOVED
;
6368 #endif /* CONFIG_NFS_V4_1 */
6371 * nfs4_proc_get_locations - discover locations for a migrated FSID
6372 * @inode: inode on FSID that is migrating
6373 * @locations: result of query
6375 * @cred: credential to use for this operation
6377 * Returns NFS4_OK on success, a negative NFS4ERR status code if the
6378 * operation failed, or a negative errno if a local error occurred.
6380 * On success, "locations" is filled in, but if the server has
6381 * no locations information, NFS_ATTR_FATTR_V4_LOCATIONS is not
6384 * -NFS4ERR_LEASE_MOVED is returned if the server still has leases
6385 * from this client that require migration recovery.
6387 int nfs4_proc_get_locations(struct inode
*inode
,
6388 struct nfs4_fs_locations
*locations
,
6389 struct page
*page
, struct rpc_cred
*cred
)
6391 struct nfs_server
*server
= NFS_SERVER(inode
);
6392 struct nfs_client
*clp
= server
->nfs_client
;
6393 const struct nfs4_mig_recovery_ops
*ops
=
6394 clp
->cl_mvops
->mig_recovery_ops
;
6395 struct nfs4_exception exception
= { };
6398 dprintk("%s: FSID %llx:%llx on \"%s\"\n", __func__
,
6399 (unsigned long long)server
->fsid
.major
,
6400 (unsigned long long)server
->fsid
.minor
,
6402 nfs_display_fhandle(NFS_FH(inode
), __func__
);
6405 status
= ops
->get_locations(inode
, locations
, page
, cred
);
6406 if (status
!= -NFS4ERR_DELAY
)
6408 nfs4_handle_exception(server
, status
, &exception
);
6409 } while (exception
.retry
);
6414 * This operation also signals the server that this client is
6415 * performing "lease moved" recovery. The server can stop
6416 * returning NFS4ERR_LEASE_MOVED to this client. A RENEW operation
6417 * is appended to this compound to identify the client ID which is
6418 * performing recovery.
6420 static int _nfs40_proc_fsid_present(struct inode
*inode
, struct rpc_cred
*cred
)
6422 struct nfs_server
*server
= NFS_SERVER(inode
);
6423 struct nfs_client
*clp
= NFS_SERVER(inode
)->nfs_client
;
6424 struct rpc_clnt
*clnt
= server
->client
;
6425 struct nfs4_fsid_present_arg args
= {
6426 .fh
= NFS_FH(inode
),
6427 .clientid
= clp
->cl_clientid
,
6428 .renew
= 1, /* append RENEW */
6430 struct nfs4_fsid_present_res res
= {
6433 struct rpc_message msg
= {
6434 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FSID_PRESENT
],
6439 unsigned long now
= jiffies
;
6442 res
.fh
= nfs_alloc_fhandle();
6446 nfs4_init_sequence(&args
.seq_args
, &res
.seq_res
, 0);
6447 nfs4_set_sequence_privileged(&args
.seq_args
);
6448 status
= nfs4_call_sync_sequence(clnt
, server
, &msg
,
6449 &args
.seq_args
, &res
.seq_res
);
6450 nfs_free_fhandle(res
.fh
);
6454 do_renew_lease(clp
, now
);
6458 #ifdef CONFIG_NFS_V4_1
6461 * This operation also signals the server that this client is
6462 * performing "lease moved" recovery. The server can stop asserting
6463 * SEQ4_STATUS_LEASE_MOVED for this client. The client ID performing
6464 * this operation is identified in the SEQUENCE operation in this
6467 static int _nfs41_proc_fsid_present(struct inode
*inode
, struct rpc_cred
*cred
)
6469 struct nfs_server
*server
= NFS_SERVER(inode
);
6470 struct rpc_clnt
*clnt
= server
->client
;
6471 struct nfs4_fsid_present_arg args
= {
6472 .fh
= NFS_FH(inode
),
6474 struct nfs4_fsid_present_res res
= {
6476 struct rpc_message msg
= {
6477 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FSID_PRESENT
],
6484 res
.fh
= nfs_alloc_fhandle();
6488 nfs4_init_sequence(&args
.seq_args
, &res
.seq_res
, 0);
6489 nfs4_set_sequence_privileged(&args
.seq_args
);
6490 status
= nfs4_call_sync_sequence(clnt
, server
, &msg
,
6491 &args
.seq_args
, &res
.seq_res
);
6492 nfs_free_fhandle(res
.fh
);
6493 if (status
== NFS4_OK
&&
6494 res
.seq_res
.sr_status_flags
& SEQ4_STATUS_LEASE_MOVED
)
6495 status
= -NFS4ERR_LEASE_MOVED
;
6499 #endif /* CONFIG_NFS_V4_1 */
6502 * nfs4_proc_fsid_present - Is this FSID present or absent on server?
6503 * @inode: inode on FSID to check
6504 * @cred: credential to use for this operation
6506 * Server indicates whether the FSID is present, moved, or not
6507 * recognized. This operation is necessary to clear a LEASE_MOVED
6508 * condition for this client ID.
6510 * Returns NFS4_OK if the FSID is present on this server,
6511 * -NFS4ERR_MOVED if the FSID is no longer present, a negative
6512 * NFS4ERR code if some error occurred on the server, or a
6513 * negative errno if a local failure occurred.
6515 int nfs4_proc_fsid_present(struct inode
*inode
, struct rpc_cred
*cred
)
6517 struct nfs_server
*server
= NFS_SERVER(inode
);
6518 struct nfs_client
*clp
= server
->nfs_client
;
6519 const struct nfs4_mig_recovery_ops
*ops
=
6520 clp
->cl_mvops
->mig_recovery_ops
;
6521 struct nfs4_exception exception
= { };
6524 dprintk("%s: FSID %llx:%llx on \"%s\"\n", __func__
,
6525 (unsigned long long)server
->fsid
.major
,
6526 (unsigned long long)server
->fsid
.minor
,
6528 nfs_display_fhandle(NFS_FH(inode
), __func__
);
6531 status
= ops
->fsid_present(inode
, cred
);
6532 if (status
!= -NFS4ERR_DELAY
)
6534 nfs4_handle_exception(server
, status
, &exception
);
6535 } while (exception
.retry
);
6540 * If 'use_integrity' is true and the state managment nfs_client
6541 * cl_rpcclient is using krb5i/p, use the integrity protected cl_rpcclient
6542 * and the machine credential as per RFC3530bis and RFC5661 Security
6543 * Considerations sections. Otherwise, just use the user cred with the
6544 * filesystem's rpc_client.
6546 static int _nfs4_proc_secinfo(struct inode
*dir
, const struct qstr
*name
, struct nfs4_secinfo_flavors
*flavors
, bool use_integrity
)
6549 struct nfs4_secinfo_arg args
= {
6550 .dir_fh
= NFS_FH(dir
),
6553 struct nfs4_secinfo_res res
= {
6556 struct rpc_message msg
= {
6557 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SECINFO
],
6561 struct rpc_clnt
*clnt
= NFS_SERVER(dir
)->client
;
6562 struct rpc_cred
*cred
= NULL
;
6564 if (use_integrity
) {
6565 clnt
= NFS_SERVER(dir
)->nfs_client
->cl_rpcclient
;
6566 cred
= nfs4_get_clid_cred(NFS_SERVER(dir
)->nfs_client
);
6567 msg
.rpc_cred
= cred
;
6570 dprintk("NFS call secinfo %s\n", name
->name
);
6572 nfs4_state_protect(NFS_SERVER(dir
)->nfs_client
,
6573 NFS_SP4_MACH_CRED_SECINFO
, &clnt
, &msg
);
6575 status
= nfs4_call_sync(clnt
, NFS_SERVER(dir
), &msg
, &args
.seq_args
,
6577 dprintk("NFS reply secinfo: %d\n", status
);
6585 int nfs4_proc_secinfo(struct inode
*dir
, const struct qstr
*name
,
6586 struct nfs4_secinfo_flavors
*flavors
)
6588 struct nfs4_exception exception
= { };
6591 err
= -NFS4ERR_WRONGSEC
;
6593 /* try to use integrity protection with machine cred */
6594 if (_nfs4_is_integrity_protected(NFS_SERVER(dir
)->nfs_client
))
6595 err
= _nfs4_proc_secinfo(dir
, name
, flavors
, true);
6598 * if unable to use integrity protection, or SECINFO with
6599 * integrity protection returns NFS4ERR_WRONGSEC (which is
6600 * disallowed by spec, but exists in deployed servers) use
6601 * the current filesystem's rpc_client and the user cred.
6603 if (err
== -NFS4ERR_WRONGSEC
)
6604 err
= _nfs4_proc_secinfo(dir
, name
, flavors
, false);
6606 trace_nfs4_secinfo(dir
, name
, err
);
6607 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
6609 } while (exception
.retry
);
6613 #ifdef CONFIG_NFS_V4_1
6615 * Check the exchange flags returned by the server for invalid flags, having
6616 * both PNFS and NON_PNFS flags set, and not having one of NON_PNFS, PNFS, or
6619 static int nfs4_check_cl_exchange_flags(u32 flags
)
6621 if (flags
& ~EXCHGID4_FLAG_MASK_R
)
6623 if ((flags
& EXCHGID4_FLAG_USE_PNFS_MDS
) &&
6624 (flags
& EXCHGID4_FLAG_USE_NON_PNFS
))
6626 if (!(flags
& (EXCHGID4_FLAG_MASK_PNFS
)))
6630 return -NFS4ERR_INVAL
;
6634 nfs41_same_server_scope(struct nfs41_server_scope
*a
,
6635 struct nfs41_server_scope
*b
)
6637 if (a
->server_scope_sz
== b
->server_scope_sz
&&
6638 memcmp(a
->server_scope
, b
->server_scope
, a
->server_scope_sz
) == 0)
6645 * nfs4_proc_bind_conn_to_session()
6647 * The 4.1 client currently uses the same TCP connection for the
6648 * fore and backchannel.
6650 int nfs4_proc_bind_conn_to_session(struct nfs_client
*clp
, struct rpc_cred
*cred
)
6653 struct nfs41_bind_conn_to_session_args args
= {
6655 .dir
= NFS4_CDFC4_FORE_OR_BOTH
,
6657 struct nfs41_bind_conn_to_session_res res
;
6658 struct rpc_message msg
= {
6660 &nfs4_procedures
[NFSPROC4_CLNT_BIND_CONN_TO_SESSION
],
6666 dprintk("--> %s\n", __func__
);
6668 nfs4_copy_sessionid(&args
.sessionid
, &clp
->cl_session
->sess_id
);
6669 if (!(clp
->cl_session
->flags
& SESSION4_BACK_CHAN
))
6670 args
.dir
= NFS4_CDFC4_FORE
;
6672 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
6673 trace_nfs4_bind_conn_to_session(clp
, status
);
6675 if (memcmp(res
.sessionid
.data
,
6676 clp
->cl_session
->sess_id
.data
, NFS4_MAX_SESSIONID_LEN
)) {
6677 dprintk("NFS: %s: Session ID mismatch\n", __func__
);
6681 if ((res
.dir
& args
.dir
) != res
.dir
|| res
.dir
== 0) {
6682 dprintk("NFS: %s: Unexpected direction from server\n",
6687 if (res
.use_conn_in_rdma_mode
!= args
.use_conn_in_rdma_mode
) {
6688 dprintk("NFS: %s: Server returned RDMA mode = true\n",
6695 dprintk("<-- %s status= %d\n", __func__
, status
);
6700 * Minimum set of SP4_MACH_CRED operations from RFC 5661 in the enforce map
6701 * and operations we'd like to see to enable certain features in the allow map
6703 static const struct nfs41_state_protection nfs4_sp4_mach_cred_request
= {
6704 .how
= SP4_MACH_CRED
,
6705 .enforce
.u
.words
= {
6706 [1] = 1 << (OP_BIND_CONN_TO_SESSION
- 32) |
6707 1 << (OP_EXCHANGE_ID
- 32) |
6708 1 << (OP_CREATE_SESSION
- 32) |
6709 1 << (OP_DESTROY_SESSION
- 32) |
6710 1 << (OP_DESTROY_CLIENTID
- 32)
6713 [0] = 1 << (OP_CLOSE
) |
6716 [1] = 1 << (OP_SECINFO
- 32) |
6717 1 << (OP_SECINFO_NO_NAME
- 32) |
6718 1 << (OP_TEST_STATEID
- 32) |
6719 1 << (OP_FREE_STATEID
- 32) |
6720 1 << (OP_WRITE
- 32)
6725 * Select the state protection mode for client `clp' given the server results
6726 * from exchange_id in `sp'.
6728 * Returns 0 on success, negative errno otherwise.
6730 static int nfs4_sp4_select_mode(struct nfs_client
*clp
,
6731 struct nfs41_state_protection
*sp
)
6733 static const u32 supported_enforce
[NFS4_OP_MAP_NUM_WORDS
] = {
6734 [1] = 1 << (OP_BIND_CONN_TO_SESSION
- 32) |
6735 1 << (OP_EXCHANGE_ID
- 32) |
6736 1 << (OP_CREATE_SESSION
- 32) |
6737 1 << (OP_DESTROY_SESSION
- 32) |
6738 1 << (OP_DESTROY_CLIENTID
- 32)
6742 if (sp
->how
== SP4_MACH_CRED
) {
6743 /* Print state protect result */
6744 dfprintk(MOUNT
, "Server SP4_MACH_CRED support:\n");
6745 for (i
= 0; i
<= LAST_NFS4_OP
; i
++) {
6746 if (test_bit(i
, sp
->enforce
.u
.longs
))
6747 dfprintk(MOUNT
, " enforce op %d\n", i
);
6748 if (test_bit(i
, sp
->allow
.u
.longs
))
6749 dfprintk(MOUNT
, " allow op %d\n", i
);
6752 /* make sure nothing is on enforce list that isn't supported */
6753 for (i
= 0; i
< NFS4_OP_MAP_NUM_WORDS
; i
++) {
6754 if (sp
->enforce
.u
.words
[i
] & ~supported_enforce
[i
]) {
6755 dfprintk(MOUNT
, "sp4_mach_cred: disabled\n");
6761 * Minimal mode - state operations are allowed to use machine
6762 * credential. Note this already happens by default, so the
6763 * client doesn't have to do anything more than the negotiation.
6765 * NOTE: we don't care if EXCHANGE_ID is in the list -
6766 * we're already using the machine cred for exchange_id
6767 * and will never use a different cred.
6769 if (test_bit(OP_BIND_CONN_TO_SESSION
, sp
->enforce
.u
.longs
) &&
6770 test_bit(OP_CREATE_SESSION
, sp
->enforce
.u
.longs
) &&
6771 test_bit(OP_DESTROY_SESSION
, sp
->enforce
.u
.longs
) &&
6772 test_bit(OP_DESTROY_CLIENTID
, sp
->enforce
.u
.longs
)) {
6773 dfprintk(MOUNT
, "sp4_mach_cred:\n");
6774 dfprintk(MOUNT
, " minimal mode enabled\n");
6775 set_bit(NFS_SP4_MACH_CRED_MINIMAL
, &clp
->cl_sp4_flags
);
6777 dfprintk(MOUNT
, "sp4_mach_cred: disabled\n");
6781 if (test_bit(OP_CLOSE
, sp
->allow
.u
.longs
) &&
6782 test_bit(OP_LOCKU
, sp
->allow
.u
.longs
)) {
6783 dfprintk(MOUNT
, " cleanup mode enabled\n");
6784 set_bit(NFS_SP4_MACH_CRED_CLEANUP
, &clp
->cl_sp4_flags
);
6787 if (test_bit(OP_SECINFO
, sp
->allow
.u
.longs
) &&
6788 test_bit(OP_SECINFO_NO_NAME
, sp
->allow
.u
.longs
)) {
6789 dfprintk(MOUNT
, " secinfo mode enabled\n");
6790 set_bit(NFS_SP4_MACH_CRED_SECINFO
, &clp
->cl_sp4_flags
);
6793 if (test_bit(OP_TEST_STATEID
, sp
->allow
.u
.longs
) &&
6794 test_bit(OP_FREE_STATEID
, sp
->allow
.u
.longs
)) {
6795 dfprintk(MOUNT
, " stateid mode enabled\n");
6796 set_bit(NFS_SP4_MACH_CRED_STATEID
, &clp
->cl_sp4_flags
);
6799 if (test_bit(OP_WRITE
, sp
->allow
.u
.longs
)) {
6800 dfprintk(MOUNT
, " write mode enabled\n");
6801 set_bit(NFS_SP4_MACH_CRED_WRITE
, &clp
->cl_sp4_flags
);
6804 if (test_bit(OP_COMMIT
, sp
->allow
.u
.longs
)) {
6805 dfprintk(MOUNT
, " commit mode enabled\n");
6806 set_bit(NFS_SP4_MACH_CRED_COMMIT
, &clp
->cl_sp4_flags
);
6814 * _nfs4_proc_exchange_id()
6816 * Wrapper for EXCHANGE_ID operation.
6818 static int _nfs4_proc_exchange_id(struct nfs_client
*clp
, struct rpc_cred
*cred
,
6821 nfs4_verifier verifier
;
6822 struct nfs41_exchange_id_args args
= {
6823 .verifier
= &verifier
,
6825 #ifdef CONFIG_NFS_V4_1_MIGRATION
6826 .flags
= EXCHGID4_FLAG_SUPP_MOVED_REFER
|
6827 EXCHGID4_FLAG_BIND_PRINC_STATEID
|
6828 EXCHGID4_FLAG_SUPP_MOVED_MIGR
,
6830 .flags
= EXCHGID4_FLAG_SUPP_MOVED_REFER
|
6831 EXCHGID4_FLAG_BIND_PRINC_STATEID
,
6834 struct nfs41_exchange_id_res res
= {
6838 struct rpc_message msg
= {
6839 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_EXCHANGE_ID
],
6845 nfs4_init_boot_verifier(clp
, &verifier
);
6846 args
.id_len
= nfs4_init_uniform_client_string(clp
, args
.id
,
6848 dprintk("NFS call exchange_id auth=%s, '%.*s'\n",
6849 clp
->cl_rpcclient
->cl_auth
->au_ops
->au_name
,
6850 args
.id_len
, args
.id
);
6852 res
.server_owner
= kzalloc(sizeof(struct nfs41_server_owner
),
6854 if (unlikely(res
.server_owner
== NULL
)) {
6859 res
.server_scope
= kzalloc(sizeof(struct nfs41_server_scope
),
6861 if (unlikely(res
.server_scope
== NULL
)) {
6863 goto out_server_owner
;
6866 res
.impl_id
= kzalloc(sizeof(struct nfs41_impl_id
), GFP_NOFS
);
6867 if (unlikely(res
.impl_id
== NULL
)) {
6869 goto out_server_scope
;
6874 args
.state_protect
.how
= SP4_NONE
;
6878 args
.state_protect
= nfs4_sp4_mach_cred_request
;
6885 goto out_server_scope
;
6888 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
6889 trace_nfs4_exchange_id(clp
, status
);
6891 status
= nfs4_check_cl_exchange_flags(res
.flags
);
6894 status
= nfs4_sp4_select_mode(clp
, &res
.state_protect
);
6897 clp
->cl_clientid
= res
.clientid
;
6898 clp
->cl_exchange_flags
= res
.flags
;
6899 /* Client ID is not confirmed */
6900 if (!(res
.flags
& EXCHGID4_FLAG_CONFIRMED_R
)) {
6901 clear_bit(NFS4_SESSION_ESTABLISHED
,
6902 &clp
->cl_session
->session_state
);
6903 clp
->cl_seqid
= res
.seqid
;
6906 kfree(clp
->cl_serverowner
);
6907 clp
->cl_serverowner
= res
.server_owner
;
6908 res
.server_owner
= NULL
;
6910 /* use the most recent implementation id */
6911 kfree(clp
->cl_implid
);
6912 clp
->cl_implid
= res
.impl_id
;
6914 if (clp
->cl_serverscope
!= NULL
&&
6915 !nfs41_same_server_scope(clp
->cl_serverscope
,
6916 res
.server_scope
)) {
6917 dprintk("%s: server_scope mismatch detected\n",
6919 set_bit(NFS4CLNT_SERVER_SCOPE_MISMATCH
, &clp
->cl_state
);
6920 kfree(clp
->cl_serverscope
);
6921 clp
->cl_serverscope
= NULL
;
6924 if (clp
->cl_serverscope
== NULL
) {
6925 clp
->cl_serverscope
= res
.server_scope
;
6932 kfree(res
.server_owner
);
6934 kfree(res
.server_scope
);
6936 if (clp
->cl_implid
!= NULL
)
6937 dprintk("NFS reply exchange_id: Server Implementation ID: "
6938 "domain: %s, name: %s, date: %llu,%u\n",
6939 clp
->cl_implid
->domain
, clp
->cl_implid
->name
,
6940 clp
->cl_implid
->date
.seconds
,
6941 clp
->cl_implid
->date
.nseconds
);
6942 dprintk("NFS reply exchange_id: %d\n", status
);
6947 * nfs4_proc_exchange_id()
6949 * Returns zero, a negative errno, or a negative NFS4ERR status code.
6951 * Since the clientid has expired, all compounds using sessions
6952 * associated with the stale clientid will be returning
6953 * NFS4ERR_BADSESSION in the sequence operation, and will therefore
6954 * be in some phase of session reset.
6956 * Will attempt to negotiate SP4_MACH_CRED if krb5i / krb5p auth is used.
6958 int nfs4_proc_exchange_id(struct nfs_client
*clp
, struct rpc_cred
*cred
)
6960 rpc_authflavor_t authflavor
= clp
->cl_rpcclient
->cl_auth
->au_flavor
;
6963 /* try SP4_MACH_CRED if krb5i/p */
6964 if (authflavor
== RPC_AUTH_GSS_KRB5I
||
6965 authflavor
== RPC_AUTH_GSS_KRB5P
) {
6966 status
= _nfs4_proc_exchange_id(clp
, cred
, SP4_MACH_CRED
);
6972 return _nfs4_proc_exchange_id(clp
, cred
, SP4_NONE
);
6975 static int _nfs4_proc_destroy_clientid(struct nfs_client
*clp
,
6976 struct rpc_cred
*cred
)
6978 struct rpc_message msg
= {
6979 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DESTROY_CLIENTID
],
6985 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
6986 trace_nfs4_destroy_clientid(clp
, status
);
6988 dprintk("NFS: Got error %d from the server %s on "
6989 "DESTROY_CLIENTID.", status
, clp
->cl_hostname
);
6993 static int nfs4_proc_destroy_clientid(struct nfs_client
*clp
,
6994 struct rpc_cred
*cred
)
6999 for (loop
= NFS4_MAX_LOOP_ON_RECOVER
; loop
!= 0; loop
--) {
7000 ret
= _nfs4_proc_destroy_clientid(clp
, cred
);
7002 case -NFS4ERR_DELAY
:
7003 case -NFS4ERR_CLIENTID_BUSY
:
7013 int nfs4_destroy_clientid(struct nfs_client
*clp
)
7015 struct rpc_cred
*cred
;
7018 if (clp
->cl_mvops
->minor_version
< 1)
7020 if (clp
->cl_exchange_flags
== 0)
7022 if (clp
->cl_preserve_clid
)
7024 cred
= nfs4_get_clid_cred(clp
);
7025 ret
= nfs4_proc_destroy_clientid(clp
, cred
);
7030 case -NFS4ERR_STALE_CLIENTID
:
7031 clp
->cl_exchange_flags
= 0;
7037 struct nfs4_get_lease_time_data
{
7038 struct nfs4_get_lease_time_args
*args
;
7039 struct nfs4_get_lease_time_res
*res
;
7040 struct nfs_client
*clp
;
7043 static void nfs4_get_lease_time_prepare(struct rpc_task
*task
,
7046 struct nfs4_get_lease_time_data
*data
=
7047 (struct nfs4_get_lease_time_data
*)calldata
;
7049 dprintk("--> %s\n", __func__
);
7050 /* just setup sequence, do not trigger session recovery
7051 since we're invoked within one */
7052 nfs41_setup_sequence(data
->clp
->cl_session
,
7053 &data
->args
->la_seq_args
,
7054 &data
->res
->lr_seq_res
,
7056 dprintk("<-- %s\n", __func__
);
7060 * Called from nfs4_state_manager thread for session setup, so don't recover
7061 * from sequence operation or clientid errors.
7063 static void nfs4_get_lease_time_done(struct rpc_task
*task
, void *calldata
)
7065 struct nfs4_get_lease_time_data
*data
=
7066 (struct nfs4_get_lease_time_data
*)calldata
;
7068 dprintk("--> %s\n", __func__
);
7069 if (!nfs41_sequence_done(task
, &data
->res
->lr_seq_res
))
7071 switch (task
->tk_status
) {
7072 case -NFS4ERR_DELAY
:
7073 case -NFS4ERR_GRACE
:
7074 dprintk("%s Retry: tk_status %d\n", __func__
, task
->tk_status
);
7075 rpc_delay(task
, NFS4_POLL_RETRY_MIN
);
7076 task
->tk_status
= 0;
7078 case -NFS4ERR_RETRY_UNCACHED_REP
:
7079 rpc_restart_call_prepare(task
);
7082 dprintk("<-- %s\n", __func__
);
7085 static const struct rpc_call_ops nfs4_get_lease_time_ops
= {
7086 .rpc_call_prepare
= nfs4_get_lease_time_prepare
,
7087 .rpc_call_done
= nfs4_get_lease_time_done
,
7090 int nfs4_proc_get_lease_time(struct nfs_client
*clp
, struct nfs_fsinfo
*fsinfo
)
7092 struct rpc_task
*task
;
7093 struct nfs4_get_lease_time_args args
;
7094 struct nfs4_get_lease_time_res res
= {
7095 .lr_fsinfo
= fsinfo
,
7097 struct nfs4_get_lease_time_data data
= {
7102 struct rpc_message msg
= {
7103 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GET_LEASE_TIME
],
7107 struct rpc_task_setup task_setup
= {
7108 .rpc_client
= clp
->cl_rpcclient
,
7109 .rpc_message
= &msg
,
7110 .callback_ops
= &nfs4_get_lease_time_ops
,
7111 .callback_data
= &data
,
7112 .flags
= RPC_TASK_TIMEOUT
,
7116 nfs4_init_sequence(&args
.la_seq_args
, &res
.lr_seq_res
, 0);
7117 nfs4_set_sequence_privileged(&args
.la_seq_args
);
7118 dprintk("--> %s\n", __func__
);
7119 task
= rpc_run_task(&task_setup
);
7122 status
= PTR_ERR(task
);
7124 status
= task
->tk_status
;
7127 dprintk("<-- %s return %d\n", __func__
, status
);
7133 * Initialize the values to be used by the client in CREATE_SESSION
7134 * If nfs4_init_session set the fore channel request and response sizes,
7137 * Set the back channel max_resp_sz_cached to zero to force the client to
7138 * always set csa_cachethis to FALSE because the current implementation
7139 * of the back channel DRC only supports caching the CB_SEQUENCE operation.
7141 static void nfs4_init_channel_attrs(struct nfs41_create_session_args
*args
)
7143 unsigned int max_rqst_sz
, max_resp_sz
;
7145 max_rqst_sz
= NFS_MAX_FILE_IO_SIZE
+ nfs41_maxwrite_overhead
;
7146 max_resp_sz
= NFS_MAX_FILE_IO_SIZE
+ nfs41_maxread_overhead
;
7148 /* Fore channel attributes */
7149 args
->fc_attrs
.max_rqst_sz
= max_rqst_sz
;
7150 args
->fc_attrs
.max_resp_sz
= max_resp_sz
;
7151 args
->fc_attrs
.max_ops
= NFS4_MAX_OPS
;
7152 args
->fc_attrs
.max_reqs
= max_session_slots
;
7154 dprintk("%s: Fore Channel : max_rqst_sz=%u max_resp_sz=%u "
7155 "max_ops=%u max_reqs=%u\n",
7157 args
->fc_attrs
.max_rqst_sz
, args
->fc_attrs
.max_resp_sz
,
7158 args
->fc_attrs
.max_ops
, args
->fc_attrs
.max_reqs
);
7160 /* Back channel attributes */
7161 args
->bc_attrs
.max_rqst_sz
= PAGE_SIZE
;
7162 args
->bc_attrs
.max_resp_sz
= PAGE_SIZE
;
7163 args
->bc_attrs
.max_resp_sz_cached
= 0;
7164 args
->bc_attrs
.max_ops
= NFS4_MAX_BACK_CHANNEL_OPS
;
7165 args
->bc_attrs
.max_reqs
= 1;
7167 dprintk("%s: Back Channel : max_rqst_sz=%u max_resp_sz=%u "
7168 "max_resp_sz_cached=%u max_ops=%u max_reqs=%u\n",
7170 args
->bc_attrs
.max_rqst_sz
, args
->bc_attrs
.max_resp_sz
,
7171 args
->bc_attrs
.max_resp_sz_cached
, args
->bc_attrs
.max_ops
,
7172 args
->bc_attrs
.max_reqs
);
7175 static int nfs4_verify_fore_channel_attrs(struct nfs41_create_session_args
*args
,
7176 struct nfs41_create_session_res
*res
)
7178 struct nfs4_channel_attrs
*sent
= &args
->fc_attrs
;
7179 struct nfs4_channel_attrs
*rcvd
= &res
->fc_attrs
;
7181 if (rcvd
->max_resp_sz
> sent
->max_resp_sz
)
7184 * Our requested max_ops is the minimum we need; we're not
7185 * prepared to break up compounds into smaller pieces than that.
7186 * So, no point even trying to continue if the server won't
7189 if (rcvd
->max_ops
< sent
->max_ops
)
7191 if (rcvd
->max_reqs
== 0)
7193 if (rcvd
->max_reqs
> NFS4_MAX_SLOT_TABLE
)
7194 rcvd
->max_reqs
= NFS4_MAX_SLOT_TABLE
;
7198 static int nfs4_verify_back_channel_attrs(struct nfs41_create_session_args
*args
,
7199 struct nfs41_create_session_res
*res
)
7201 struct nfs4_channel_attrs
*sent
= &args
->bc_attrs
;
7202 struct nfs4_channel_attrs
*rcvd
= &res
->bc_attrs
;
7204 if (!(res
->flags
& SESSION4_BACK_CHAN
))
7206 if (rcvd
->max_rqst_sz
> sent
->max_rqst_sz
)
7208 if (rcvd
->max_resp_sz
< sent
->max_resp_sz
)
7210 if (rcvd
->max_resp_sz_cached
> sent
->max_resp_sz_cached
)
7212 /* These would render the backchannel useless: */
7213 if (rcvd
->max_ops
!= sent
->max_ops
)
7215 if (rcvd
->max_reqs
!= sent
->max_reqs
)
7221 static int nfs4_verify_channel_attrs(struct nfs41_create_session_args
*args
,
7222 struct nfs41_create_session_res
*res
)
7226 ret
= nfs4_verify_fore_channel_attrs(args
, res
);
7229 return nfs4_verify_back_channel_attrs(args
, res
);
7232 static void nfs4_update_session(struct nfs4_session
*session
,
7233 struct nfs41_create_session_res
*res
)
7235 nfs4_copy_sessionid(&session
->sess_id
, &res
->sessionid
);
7236 /* Mark client id and session as being confirmed */
7237 session
->clp
->cl_exchange_flags
|= EXCHGID4_FLAG_CONFIRMED_R
;
7238 set_bit(NFS4_SESSION_ESTABLISHED
, &session
->session_state
);
7239 session
->flags
= res
->flags
;
7240 memcpy(&session
->fc_attrs
, &res
->fc_attrs
, sizeof(session
->fc_attrs
));
7241 if (res
->flags
& SESSION4_BACK_CHAN
)
7242 memcpy(&session
->bc_attrs
, &res
->bc_attrs
,
7243 sizeof(session
->bc_attrs
));
7246 static int _nfs4_proc_create_session(struct nfs_client
*clp
,
7247 struct rpc_cred
*cred
)
7249 struct nfs4_session
*session
= clp
->cl_session
;
7250 struct nfs41_create_session_args args
= {
7252 .clientid
= clp
->cl_clientid
,
7253 .seqid
= clp
->cl_seqid
,
7254 .cb_program
= NFS4_CALLBACK
,
7256 struct nfs41_create_session_res res
;
7258 struct rpc_message msg
= {
7259 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CREATE_SESSION
],
7266 nfs4_init_channel_attrs(&args
);
7267 args
.flags
= (SESSION4_PERSIST
| SESSION4_BACK_CHAN
);
7269 status
= rpc_call_sync(session
->clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
7270 trace_nfs4_create_session(clp
, status
);
7273 /* Verify the session's negotiated channel_attrs values */
7274 status
= nfs4_verify_channel_attrs(&args
, &res
);
7275 /* Increment the clientid slot sequence id */
7276 if (clp
->cl_seqid
== res
.seqid
)
7280 nfs4_update_session(session
, &res
);
7287 * Issues a CREATE_SESSION operation to the server.
7288 * It is the responsibility of the caller to verify the session is
7289 * expired before calling this routine.
7291 int nfs4_proc_create_session(struct nfs_client
*clp
, struct rpc_cred
*cred
)
7295 struct nfs4_session
*session
= clp
->cl_session
;
7297 dprintk("--> %s clp=%p session=%p\n", __func__
, clp
, session
);
7299 status
= _nfs4_proc_create_session(clp
, cred
);
7303 /* Init or reset the session slot tables */
7304 status
= nfs4_setup_session_slot_tables(session
);
7305 dprintk("slot table setup returned %d\n", status
);
7309 ptr
= (unsigned *)&session
->sess_id
.data
[0];
7310 dprintk("%s client>seqid %d sessionid %u:%u:%u:%u\n", __func__
,
7311 clp
->cl_seqid
, ptr
[0], ptr
[1], ptr
[2], ptr
[3]);
7313 dprintk("<-- %s\n", __func__
);
7318 * Issue the over-the-wire RPC DESTROY_SESSION.
7319 * The caller must serialize access to this routine.
7321 int nfs4_proc_destroy_session(struct nfs4_session
*session
,
7322 struct rpc_cred
*cred
)
7324 struct rpc_message msg
= {
7325 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DESTROY_SESSION
],
7326 .rpc_argp
= session
,
7331 dprintk("--> nfs4_proc_destroy_session\n");
7333 /* session is still being setup */
7334 if (!test_and_clear_bit(NFS4_SESSION_ESTABLISHED
, &session
->session_state
))
7337 status
= rpc_call_sync(session
->clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
7338 trace_nfs4_destroy_session(session
->clp
, status
);
7341 dprintk("NFS: Got error %d from the server on DESTROY_SESSION. "
7342 "Session has been destroyed regardless...\n", status
);
7344 dprintk("<-- nfs4_proc_destroy_session\n");
7349 * Renew the cl_session lease.
7351 struct nfs4_sequence_data
{
7352 struct nfs_client
*clp
;
7353 struct nfs4_sequence_args args
;
7354 struct nfs4_sequence_res res
;
7357 static void nfs41_sequence_release(void *data
)
7359 struct nfs4_sequence_data
*calldata
= data
;
7360 struct nfs_client
*clp
= calldata
->clp
;
7362 if (atomic_read(&clp
->cl_count
) > 1)
7363 nfs4_schedule_state_renewal(clp
);
7364 nfs_put_client(clp
);
7368 static int nfs41_sequence_handle_errors(struct rpc_task
*task
, struct nfs_client
*clp
)
7370 switch(task
->tk_status
) {
7371 case -NFS4ERR_DELAY
:
7372 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
7375 nfs4_schedule_lease_recovery(clp
);
7380 static void nfs41_sequence_call_done(struct rpc_task
*task
, void *data
)
7382 struct nfs4_sequence_data
*calldata
= data
;
7383 struct nfs_client
*clp
= calldata
->clp
;
7385 if (!nfs41_sequence_done(task
, task
->tk_msg
.rpc_resp
))
7388 trace_nfs4_sequence(clp
, task
->tk_status
);
7389 if (task
->tk_status
< 0) {
7390 dprintk("%s ERROR %d\n", __func__
, task
->tk_status
);
7391 if (atomic_read(&clp
->cl_count
) == 1)
7394 if (nfs41_sequence_handle_errors(task
, clp
) == -EAGAIN
) {
7395 rpc_restart_call_prepare(task
);
7399 dprintk("%s rpc_cred %p\n", __func__
, task
->tk_msg
.rpc_cred
);
7401 dprintk("<-- %s\n", __func__
);
7404 static void nfs41_sequence_prepare(struct rpc_task
*task
, void *data
)
7406 struct nfs4_sequence_data
*calldata
= data
;
7407 struct nfs_client
*clp
= calldata
->clp
;
7408 struct nfs4_sequence_args
*args
;
7409 struct nfs4_sequence_res
*res
;
7411 args
= task
->tk_msg
.rpc_argp
;
7412 res
= task
->tk_msg
.rpc_resp
;
7414 nfs41_setup_sequence(clp
->cl_session
, args
, res
, task
);
7417 static const struct rpc_call_ops nfs41_sequence_ops
= {
7418 .rpc_call_done
= nfs41_sequence_call_done
,
7419 .rpc_call_prepare
= nfs41_sequence_prepare
,
7420 .rpc_release
= nfs41_sequence_release
,
7423 static struct rpc_task
*_nfs41_proc_sequence(struct nfs_client
*clp
,
7424 struct rpc_cred
*cred
,
7427 struct nfs4_sequence_data
*calldata
;
7428 struct rpc_message msg
= {
7429 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SEQUENCE
],
7432 struct rpc_task_setup task_setup_data
= {
7433 .rpc_client
= clp
->cl_rpcclient
,
7434 .rpc_message
= &msg
,
7435 .callback_ops
= &nfs41_sequence_ops
,
7436 .flags
= RPC_TASK_ASYNC
| RPC_TASK_TIMEOUT
,
7439 if (!atomic_inc_not_zero(&clp
->cl_count
))
7440 return ERR_PTR(-EIO
);
7441 calldata
= kzalloc(sizeof(*calldata
), GFP_NOFS
);
7442 if (calldata
== NULL
) {
7443 nfs_put_client(clp
);
7444 return ERR_PTR(-ENOMEM
);
7446 nfs4_init_sequence(&calldata
->args
, &calldata
->res
, 0);
7448 nfs4_set_sequence_privileged(&calldata
->args
);
7449 msg
.rpc_argp
= &calldata
->args
;
7450 msg
.rpc_resp
= &calldata
->res
;
7451 calldata
->clp
= clp
;
7452 task_setup_data
.callback_data
= calldata
;
7454 return rpc_run_task(&task_setup_data
);
7457 static int nfs41_proc_async_sequence(struct nfs_client
*clp
, struct rpc_cred
*cred
, unsigned renew_flags
)
7459 struct rpc_task
*task
;
7462 if ((renew_flags
& NFS4_RENEW_TIMEOUT
) == 0)
7464 task
= _nfs41_proc_sequence(clp
, cred
, false);
7466 ret
= PTR_ERR(task
);
7468 rpc_put_task_async(task
);
7469 dprintk("<-- %s status=%d\n", __func__
, ret
);
7473 static int nfs4_proc_sequence(struct nfs_client
*clp
, struct rpc_cred
*cred
)
7475 struct rpc_task
*task
;
7478 task
= _nfs41_proc_sequence(clp
, cred
, true);
7480 ret
= PTR_ERR(task
);
7483 ret
= rpc_wait_for_completion_task(task
);
7485 struct nfs4_sequence_res
*res
= task
->tk_msg
.rpc_resp
;
7487 if (task
->tk_status
== 0)
7488 nfs41_handle_sequence_flag_errors(clp
, res
->sr_status_flags
);
7489 ret
= task
->tk_status
;
7493 dprintk("<-- %s status=%d\n", __func__
, ret
);
7497 struct nfs4_reclaim_complete_data
{
7498 struct nfs_client
*clp
;
7499 struct nfs41_reclaim_complete_args arg
;
7500 struct nfs41_reclaim_complete_res res
;
7503 static void nfs4_reclaim_complete_prepare(struct rpc_task
*task
, void *data
)
7505 struct nfs4_reclaim_complete_data
*calldata
= data
;
7507 nfs41_setup_sequence(calldata
->clp
->cl_session
,
7508 &calldata
->arg
.seq_args
,
7509 &calldata
->res
.seq_res
,
7513 static int nfs41_reclaim_complete_handle_errors(struct rpc_task
*task
, struct nfs_client
*clp
)
7515 switch(task
->tk_status
) {
7517 case -NFS4ERR_COMPLETE_ALREADY
:
7518 case -NFS4ERR_WRONG_CRED
: /* What to do here? */
7520 case -NFS4ERR_DELAY
:
7521 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
7523 case -NFS4ERR_RETRY_UNCACHED_REP
:
7526 nfs4_schedule_lease_recovery(clp
);
7531 static void nfs4_reclaim_complete_done(struct rpc_task
*task
, void *data
)
7533 struct nfs4_reclaim_complete_data
*calldata
= data
;
7534 struct nfs_client
*clp
= calldata
->clp
;
7535 struct nfs4_sequence_res
*res
= &calldata
->res
.seq_res
;
7537 dprintk("--> %s\n", __func__
);
7538 if (!nfs41_sequence_done(task
, res
))
7541 trace_nfs4_reclaim_complete(clp
, task
->tk_status
);
7542 if (nfs41_reclaim_complete_handle_errors(task
, clp
) == -EAGAIN
) {
7543 rpc_restart_call_prepare(task
);
7546 dprintk("<-- %s\n", __func__
);
7549 static void nfs4_free_reclaim_complete_data(void *data
)
7551 struct nfs4_reclaim_complete_data
*calldata
= data
;
7556 static const struct rpc_call_ops nfs4_reclaim_complete_call_ops
= {
7557 .rpc_call_prepare
= nfs4_reclaim_complete_prepare
,
7558 .rpc_call_done
= nfs4_reclaim_complete_done
,
7559 .rpc_release
= nfs4_free_reclaim_complete_data
,
7563 * Issue a global reclaim complete.
7565 static int nfs41_proc_reclaim_complete(struct nfs_client
*clp
,
7566 struct rpc_cred
*cred
)
7568 struct nfs4_reclaim_complete_data
*calldata
;
7569 struct rpc_task
*task
;
7570 struct rpc_message msg
= {
7571 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RECLAIM_COMPLETE
],
7574 struct rpc_task_setup task_setup_data
= {
7575 .rpc_client
= clp
->cl_rpcclient
,
7576 .rpc_message
= &msg
,
7577 .callback_ops
= &nfs4_reclaim_complete_call_ops
,
7578 .flags
= RPC_TASK_ASYNC
,
7580 int status
= -ENOMEM
;
7582 dprintk("--> %s\n", __func__
);
7583 calldata
= kzalloc(sizeof(*calldata
), GFP_NOFS
);
7584 if (calldata
== NULL
)
7586 calldata
->clp
= clp
;
7587 calldata
->arg
.one_fs
= 0;
7589 nfs4_init_sequence(&calldata
->arg
.seq_args
, &calldata
->res
.seq_res
, 0);
7590 nfs4_set_sequence_privileged(&calldata
->arg
.seq_args
);
7591 msg
.rpc_argp
= &calldata
->arg
;
7592 msg
.rpc_resp
= &calldata
->res
;
7593 task_setup_data
.callback_data
= calldata
;
7594 task
= rpc_run_task(&task_setup_data
);
7596 status
= PTR_ERR(task
);
7599 status
= nfs4_wait_for_completion_rpc_task(task
);
7601 status
= task
->tk_status
;
7605 dprintk("<-- %s status=%d\n", __func__
, status
);
7610 nfs4_layoutget_prepare(struct rpc_task
*task
, void *calldata
)
7612 struct nfs4_layoutget
*lgp
= calldata
;
7613 struct nfs_server
*server
= NFS_SERVER(lgp
->args
.inode
);
7614 struct nfs4_session
*session
= nfs4_get_session(server
);
7616 dprintk("--> %s\n", __func__
);
7617 /* Note the is a race here, where a CB_LAYOUTRECALL can come in
7618 * right now covering the LAYOUTGET we are about to send.
7619 * However, that is not so catastrophic, and there seems
7620 * to be no way to prevent it completely.
7622 if (nfs41_setup_sequence(session
, &lgp
->args
.seq_args
,
7623 &lgp
->res
.seq_res
, task
))
7625 if (pnfs_choose_layoutget_stateid(&lgp
->args
.stateid
,
7626 NFS_I(lgp
->args
.inode
)->layout
,
7628 lgp
->args
.ctx
->state
)) {
7629 rpc_exit(task
, NFS4_OK
);
7633 static void nfs4_layoutget_done(struct rpc_task
*task
, void *calldata
)
7635 struct nfs4_layoutget
*lgp
= calldata
;
7636 struct inode
*inode
= lgp
->args
.inode
;
7637 struct nfs_server
*server
= NFS_SERVER(inode
);
7638 struct pnfs_layout_hdr
*lo
;
7639 struct nfs4_state
*state
= NULL
;
7640 unsigned long timeo
, now
, giveup
;
7642 dprintk("--> %s tk_status => %d\n", __func__
, -task
->tk_status
);
7644 if (!nfs41_sequence_done(task
, &lgp
->res
.seq_res
))
7647 switch (task
->tk_status
) {
7651 * NFS4ERR_LAYOUTTRYLATER is a conflict with another client
7652 * (or clients) writing to the same RAID stripe
7654 case -NFS4ERR_LAYOUTTRYLATER
:
7656 * NFS4ERR_RECALLCONFLICT is when conflict with self (must recall
7657 * existing layout before getting a new one).
7659 case -NFS4ERR_RECALLCONFLICT
:
7660 timeo
= rpc_get_timeout(task
->tk_client
);
7661 giveup
= lgp
->args
.timestamp
+ timeo
;
7663 if (time_after(giveup
, now
)) {
7664 unsigned long delay
;
7667 * - Not less then NFS4_POLL_RETRY_MIN.
7668 * - One last time a jiffie before we give up
7669 * - exponential backoff (time_now minus start_attempt)
7671 delay
= max_t(unsigned long, NFS4_POLL_RETRY_MIN
,
7672 min((giveup
- now
- 1),
7673 now
- lgp
->args
.timestamp
));
7675 dprintk("%s: NFS4ERR_RECALLCONFLICT waiting %lu\n",
7677 rpc_delay(task
, delay
);
7678 task
->tk_status
= 0;
7679 rpc_restart_call_prepare(task
);
7680 goto out
; /* Do not call nfs4_async_handle_error() */
7683 case -NFS4ERR_EXPIRED
:
7684 case -NFS4ERR_BAD_STATEID
:
7685 spin_lock(&inode
->i_lock
);
7686 lo
= NFS_I(inode
)->layout
;
7687 if (!lo
|| list_empty(&lo
->plh_segs
)) {
7688 spin_unlock(&inode
->i_lock
);
7689 /* If the open stateid was bad, then recover it. */
7690 state
= lgp
->args
.ctx
->state
;
7695 * Mark the bad layout state as invalid, then retry
7696 * with the current stateid.
7698 pnfs_mark_matching_lsegs_invalid(lo
, &head
, NULL
);
7699 spin_unlock(&inode
->i_lock
);
7700 pnfs_free_lseg_list(&head
);
7702 task
->tk_status
= 0;
7703 rpc_restart_call_prepare(task
);
7706 if (nfs4_async_handle_error(task
, server
, state
, NULL
) == -EAGAIN
)
7707 rpc_restart_call_prepare(task
);
7709 dprintk("<-- %s\n", __func__
);
7712 static size_t max_response_pages(struct nfs_server
*server
)
7714 u32 max_resp_sz
= server
->nfs_client
->cl_session
->fc_attrs
.max_resp_sz
;
7715 return nfs_page_array_len(0, max_resp_sz
);
7718 static void nfs4_free_pages(struct page
**pages
, size_t size
)
7725 for (i
= 0; i
< size
; i
++) {
7728 __free_page(pages
[i
]);
7733 static struct page
**nfs4_alloc_pages(size_t size
, gfp_t gfp_flags
)
7735 struct page
**pages
;
7738 pages
= kcalloc(size
, sizeof(struct page
*), gfp_flags
);
7740 dprintk("%s: can't alloc array of %zu pages\n", __func__
, size
);
7744 for (i
= 0; i
< size
; i
++) {
7745 pages
[i
] = alloc_page(gfp_flags
);
7747 dprintk("%s: failed to allocate page\n", __func__
);
7748 nfs4_free_pages(pages
, size
);
7756 static void nfs4_layoutget_release(void *calldata
)
7758 struct nfs4_layoutget
*lgp
= calldata
;
7759 struct inode
*inode
= lgp
->args
.inode
;
7760 struct nfs_server
*server
= NFS_SERVER(inode
);
7761 size_t max_pages
= max_response_pages(server
);
7763 dprintk("--> %s\n", __func__
);
7764 nfs4_free_pages(lgp
->args
.layout
.pages
, max_pages
);
7765 pnfs_put_layout_hdr(NFS_I(inode
)->layout
);
7766 put_nfs_open_context(lgp
->args
.ctx
);
7768 dprintk("<-- %s\n", __func__
);
7771 static const struct rpc_call_ops nfs4_layoutget_call_ops
= {
7772 .rpc_call_prepare
= nfs4_layoutget_prepare
,
7773 .rpc_call_done
= nfs4_layoutget_done
,
7774 .rpc_release
= nfs4_layoutget_release
,
7777 struct pnfs_layout_segment
*
7778 nfs4_proc_layoutget(struct nfs4_layoutget
*lgp
, gfp_t gfp_flags
)
7780 struct inode
*inode
= lgp
->args
.inode
;
7781 struct nfs_server
*server
= NFS_SERVER(inode
);
7782 size_t max_pages
= max_response_pages(server
);
7783 struct rpc_task
*task
;
7784 struct rpc_message msg
= {
7785 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LAYOUTGET
],
7786 .rpc_argp
= &lgp
->args
,
7787 .rpc_resp
= &lgp
->res
,
7788 .rpc_cred
= lgp
->cred
,
7790 struct rpc_task_setup task_setup_data
= {
7791 .rpc_client
= server
->client
,
7792 .rpc_message
= &msg
,
7793 .callback_ops
= &nfs4_layoutget_call_ops
,
7794 .callback_data
= lgp
,
7795 .flags
= RPC_TASK_ASYNC
,
7797 struct pnfs_layout_segment
*lseg
= NULL
;
7800 dprintk("--> %s\n", __func__
);
7802 /* nfs4_layoutget_release calls pnfs_put_layout_hdr */
7803 pnfs_get_layout_hdr(NFS_I(inode
)->layout
);
7805 lgp
->args
.layout
.pages
= nfs4_alloc_pages(max_pages
, gfp_flags
);
7806 if (!lgp
->args
.layout
.pages
) {
7807 nfs4_layoutget_release(lgp
);
7808 return ERR_PTR(-ENOMEM
);
7810 lgp
->args
.layout
.pglen
= max_pages
* PAGE_SIZE
;
7811 lgp
->args
.timestamp
= jiffies
;
7813 lgp
->res
.layoutp
= &lgp
->args
.layout
;
7814 lgp
->res
.seq_res
.sr_slot
= NULL
;
7815 nfs4_init_sequence(&lgp
->args
.seq_args
, &lgp
->res
.seq_res
, 0);
7817 task
= rpc_run_task(&task_setup_data
);
7819 return ERR_CAST(task
);
7820 status
= nfs4_wait_for_completion_rpc_task(task
);
7822 status
= task
->tk_status
;
7823 trace_nfs4_layoutget(lgp
->args
.ctx
,
7827 /* if layoutp->len is 0, nfs4_layoutget_prepare called rpc_exit */
7828 if (status
== 0 && lgp
->res
.layoutp
->len
)
7829 lseg
= pnfs_layout_process(lgp
);
7831 dprintk("<-- %s status=%d\n", __func__
, status
);
7833 return ERR_PTR(status
);
7838 nfs4_layoutreturn_prepare(struct rpc_task
*task
, void *calldata
)
7840 struct nfs4_layoutreturn
*lrp
= calldata
;
7842 dprintk("--> %s\n", __func__
);
7843 nfs41_setup_sequence(lrp
->clp
->cl_session
,
7844 &lrp
->args
.seq_args
,
7849 static void nfs4_layoutreturn_done(struct rpc_task
*task
, void *calldata
)
7851 struct nfs4_layoutreturn
*lrp
= calldata
;
7852 struct nfs_server
*server
;
7854 dprintk("--> %s\n", __func__
);
7856 if (!nfs41_sequence_done(task
, &lrp
->res
.seq_res
))
7859 server
= NFS_SERVER(lrp
->args
.inode
);
7860 switch (task
->tk_status
) {
7862 task
->tk_status
= 0;
7865 case -NFS4ERR_DELAY
:
7866 if (nfs4_async_handle_error(task
, server
, NULL
, NULL
) != -EAGAIN
)
7868 rpc_restart_call_prepare(task
);
7871 dprintk("<-- %s\n", __func__
);
7874 static void nfs4_layoutreturn_release(void *calldata
)
7876 struct nfs4_layoutreturn
*lrp
= calldata
;
7877 struct pnfs_layout_hdr
*lo
= lrp
->args
.layout
;
7879 dprintk("--> %s\n", __func__
);
7880 spin_lock(&lo
->plh_inode
->i_lock
);
7881 if (lrp
->res
.lrs_present
)
7882 pnfs_set_layout_stateid(lo
, &lrp
->res
.stateid
, true);
7883 pnfs_clear_layoutreturn_waitbit(lo
);
7884 clear_bit(NFS_LAYOUT_RETURN_BEFORE_CLOSE
, &lo
->plh_flags
);
7885 rpc_wake_up(&NFS_SERVER(lo
->plh_inode
)->roc_rpcwaitq
);
7886 lo
->plh_block_lgets
--;
7887 spin_unlock(&lo
->plh_inode
->i_lock
);
7888 pnfs_put_layout_hdr(lrp
->args
.layout
);
7889 nfs_iput_and_deactive(lrp
->inode
);
7891 dprintk("<-- %s\n", __func__
);
7894 static const struct rpc_call_ops nfs4_layoutreturn_call_ops
= {
7895 .rpc_call_prepare
= nfs4_layoutreturn_prepare
,
7896 .rpc_call_done
= nfs4_layoutreturn_done
,
7897 .rpc_release
= nfs4_layoutreturn_release
,
7900 int nfs4_proc_layoutreturn(struct nfs4_layoutreturn
*lrp
, bool sync
)
7902 struct rpc_task
*task
;
7903 struct rpc_message msg
= {
7904 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LAYOUTRETURN
],
7905 .rpc_argp
= &lrp
->args
,
7906 .rpc_resp
= &lrp
->res
,
7907 .rpc_cred
= lrp
->cred
,
7909 struct rpc_task_setup task_setup_data
= {
7910 .rpc_client
= NFS_SERVER(lrp
->args
.inode
)->client
,
7911 .rpc_message
= &msg
,
7912 .callback_ops
= &nfs4_layoutreturn_call_ops
,
7913 .callback_data
= lrp
,
7917 dprintk("--> %s\n", __func__
);
7919 lrp
->inode
= nfs_igrab_and_active(lrp
->args
.inode
);
7921 nfs4_layoutreturn_release(lrp
);
7924 task_setup_data
.flags
|= RPC_TASK_ASYNC
;
7926 nfs4_init_sequence(&lrp
->args
.seq_args
, &lrp
->res
.seq_res
, 1);
7927 task
= rpc_run_task(&task_setup_data
);
7929 return PTR_ERR(task
);
7931 status
= task
->tk_status
;
7932 trace_nfs4_layoutreturn(lrp
->args
.inode
, status
);
7933 dprintk("<-- %s status=%d\n", __func__
, status
);
7939 _nfs4_proc_getdeviceinfo(struct nfs_server
*server
,
7940 struct pnfs_device
*pdev
,
7941 struct rpc_cred
*cred
)
7943 struct nfs4_getdeviceinfo_args args
= {
7945 .notify_types
= NOTIFY_DEVICEID4_CHANGE
|
7946 NOTIFY_DEVICEID4_DELETE
,
7948 struct nfs4_getdeviceinfo_res res
= {
7951 struct rpc_message msg
= {
7952 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETDEVICEINFO
],
7959 dprintk("--> %s\n", __func__
);
7960 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
7961 if (res
.notification
& ~args
.notify_types
)
7962 dprintk("%s: unsupported notification\n", __func__
);
7963 if (res
.notification
!= args
.notify_types
)
7966 dprintk("<-- %s status=%d\n", __func__
, status
);
7971 int nfs4_proc_getdeviceinfo(struct nfs_server
*server
,
7972 struct pnfs_device
*pdev
,
7973 struct rpc_cred
*cred
)
7975 struct nfs4_exception exception
= { };
7979 err
= nfs4_handle_exception(server
,
7980 _nfs4_proc_getdeviceinfo(server
, pdev
, cred
),
7982 } while (exception
.retry
);
7985 EXPORT_SYMBOL_GPL(nfs4_proc_getdeviceinfo
);
7987 static void nfs4_layoutcommit_prepare(struct rpc_task
*task
, void *calldata
)
7989 struct nfs4_layoutcommit_data
*data
= calldata
;
7990 struct nfs_server
*server
= NFS_SERVER(data
->args
.inode
);
7991 struct nfs4_session
*session
= nfs4_get_session(server
);
7993 nfs41_setup_sequence(session
,
7994 &data
->args
.seq_args
,
8000 nfs4_layoutcommit_done(struct rpc_task
*task
, void *calldata
)
8002 struct nfs4_layoutcommit_data
*data
= calldata
;
8003 struct nfs_server
*server
= NFS_SERVER(data
->args
.inode
);
8005 if (!nfs41_sequence_done(task
, &data
->res
.seq_res
))
8008 switch (task
->tk_status
) { /* Just ignore these failures */
8009 case -NFS4ERR_DELEG_REVOKED
: /* layout was recalled */
8010 case -NFS4ERR_BADIOMODE
: /* no IOMODE_RW layout for range */
8011 case -NFS4ERR_BADLAYOUT
: /* no layout */
8012 case -NFS4ERR_GRACE
: /* loca_recalim always false */
8013 task
->tk_status
= 0;
8017 if (nfs4_async_handle_error(task
, server
, NULL
, NULL
) == -EAGAIN
) {
8018 rpc_restart_call_prepare(task
);
8024 static void nfs4_layoutcommit_release(void *calldata
)
8026 struct nfs4_layoutcommit_data
*data
= calldata
;
8028 pnfs_cleanup_layoutcommit(data
);
8029 nfs_post_op_update_inode_force_wcc(data
->args
.inode
,
8031 put_rpccred(data
->cred
);
8032 nfs_iput_and_deactive(data
->inode
);
8036 static const struct rpc_call_ops nfs4_layoutcommit_ops
= {
8037 .rpc_call_prepare
= nfs4_layoutcommit_prepare
,
8038 .rpc_call_done
= nfs4_layoutcommit_done
,
8039 .rpc_release
= nfs4_layoutcommit_release
,
8043 nfs4_proc_layoutcommit(struct nfs4_layoutcommit_data
*data
, bool sync
)
8045 struct rpc_message msg
= {
8046 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LAYOUTCOMMIT
],
8047 .rpc_argp
= &data
->args
,
8048 .rpc_resp
= &data
->res
,
8049 .rpc_cred
= data
->cred
,
8051 struct rpc_task_setup task_setup_data
= {
8052 .task
= &data
->task
,
8053 .rpc_client
= NFS_CLIENT(data
->args
.inode
),
8054 .rpc_message
= &msg
,
8055 .callback_ops
= &nfs4_layoutcommit_ops
,
8056 .callback_data
= data
,
8058 struct rpc_task
*task
;
8061 dprintk("NFS: %4d initiating layoutcommit call. sync %d "
8062 "lbw: %llu inode %lu\n",
8063 data
->task
.tk_pid
, sync
,
8064 data
->args
.lastbytewritten
,
8065 data
->args
.inode
->i_ino
);
8068 data
->inode
= nfs_igrab_and_active(data
->args
.inode
);
8069 if (data
->inode
== NULL
) {
8070 nfs4_layoutcommit_release(data
);
8073 task_setup_data
.flags
= RPC_TASK_ASYNC
;
8075 nfs4_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
8076 task
= rpc_run_task(&task_setup_data
);
8078 return PTR_ERR(task
);
8080 status
= task
->tk_status
;
8081 trace_nfs4_layoutcommit(data
->args
.inode
, status
);
8082 dprintk("%s: status %d\n", __func__
, status
);
8088 * Use the state managment nfs_client cl_rpcclient, which uses krb5i (if
8089 * possible) as per RFC3530bis and RFC5661 Security Considerations sections
8092 _nfs41_proc_secinfo_no_name(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
8093 struct nfs_fsinfo
*info
,
8094 struct nfs4_secinfo_flavors
*flavors
, bool use_integrity
)
8096 struct nfs41_secinfo_no_name_args args
= {
8097 .style
= SECINFO_STYLE_CURRENT_FH
,
8099 struct nfs4_secinfo_res res
= {
8102 struct rpc_message msg
= {
8103 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SECINFO_NO_NAME
],
8107 struct rpc_clnt
*clnt
= server
->client
;
8108 struct rpc_cred
*cred
= NULL
;
8111 if (use_integrity
) {
8112 clnt
= server
->nfs_client
->cl_rpcclient
;
8113 cred
= nfs4_get_clid_cred(server
->nfs_client
);
8114 msg
.rpc_cred
= cred
;
8117 dprintk("--> %s\n", __func__
);
8118 status
= nfs4_call_sync(clnt
, server
, &msg
, &args
.seq_args
,
8120 dprintk("<-- %s status=%d\n", __func__
, status
);
8129 nfs41_proc_secinfo_no_name(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
8130 struct nfs_fsinfo
*info
, struct nfs4_secinfo_flavors
*flavors
)
8132 struct nfs4_exception exception
= { };
8135 /* first try using integrity protection */
8136 err
= -NFS4ERR_WRONGSEC
;
8138 /* try to use integrity protection with machine cred */
8139 if (_nfs4_is_integrity_protected(server
->nfs_client
))
8140 err
= _nfs41_proc_secinfo_no_name(server
, fhandle
, info
,
8144 * if unable to use integrity protection, or SECINFO with
8145 * integrity protection returns NFS4ERR_WRONGSEC (which is
8146 * disallowed by spec, but exists in deployed servers) use
8147 * the current filesystem's rpc_client and the user cred.
8149 if (err
== -NFS4ERR_WRONGSEC
)
8150 err
= _nfs41_proc_secinfo_no_name(server
, fhandle
, info
,
8155 case -NFS4ERR_WRONGSEC
:
8159 err
= nfs4_handle_exception(server
, err
, &exception
);
8161 } while (exception
.retry
);
8167 nfs41_find_root_sec(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
8168 struct nfs_fsinfo
*info
)
8172 rpc_authflavor_t flavor
= RPC_AUTH_MAXFLAVOR
;
8173 struct nfs4_secinfo_flavors
*flavors
;
8174 struct nfs4_secinfo4
*secinfo
;
8177 page
= alloc_page(GFP_KERNEL
);
8183 flavors
= page_address(page
);
8184 err
= nfs41_proc_secinfo_no_name(server
, fhandle
, info
, flavors
);
8187 * Fall back on "guess and check" method if
8188 * the server doesn't support SECINFO_NO_NAME
8190 if (err
== -NFS4ERR_WRONGSEC
|| err
== -ENOTSUPP
) {
8191 err
= nfs4_find_root_sec(server
, fhandle
, info
);
8197 for (i
= 0; i
< flavors
->num_flavors
; i
++) {
8198 secinfo
= &flavors
->flavors
[i
];
8200 switch (secinfo
->flavor
) {
8204 flavor
= rpcauth_get_pseudoflavor(secinfo
->flavor
,
8205 &secinfo
->flavor_info
);
8208 flavor
= RPC_AUTH_MAXFLAVOR
;
8212 if (!nfs_auth_info_match(&server
->auth_info
, flavor
))
8213 flavor
= RPC_AUTH_MAXFLAVOR
;
8215 if (flavor
!= RPC_AUTH_MAXFLAVOR
) {
8216 err
= nfs4_lookup_root_sec(server
, fhandle
,
8223 if (flavor
== RPC_AUTH_MAXFLAVOR
)
8234 static int _nfs41_test_stateid(struct nfs_server
*server
,
8235 nfs4_stateid
*stateid
,
8236 struct rpc_cred
*cred
)
8239 struct nfs41_test_stateid_args args
= {
8242 struct nfs41_test_stateid_res res
;
8243 struct rpc_message msg
= {
8244 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_TEST_STATEID
],
8249 struct rpc_clnt
*rpc_client
= server
->client
;
8251 nfs4_state_protect(server
->nfs_client
, NFS_SP4_MACH_CRED_STATEID
,
8254 dprintk("NFS call test_stateid %p\n", stateid
);
8255 nfs4_init_sequence(&args
.seq_args
, &res
.seq_res
, 0);
8256 nfs4_set_sequence_privileged(&args
.seq_args
);
8257 status
= nfs4_call_sync_sequence(rpc_client
, server
, &msg
,
8258 &args
.seq_args
, &res
.seq_res
);
8259 if (status
!= NFS_OK
) {
8260 dprintk("NFS reply test_stateid: failed, %d\n", status
);
8263 dprintk("NFS reply test_stateid: succeeded, %d\n", -res
.status
);
8268 * nfs41_test_stateid - perform a TEST_STATEID operation
8270 * @server: server / transport on which to perform the operation
8271 * @stateid: state ID to test
8274 * Returns NFS_OK if the server recognizes that "stateid" is valid.
8275 * Otherwise a negative NFS4ERR value is returned if the operation
8276 * failed or the state ID is not currently valid.
8278 static int nfs41_test_stateid(struct nfs_server
*server
,
8279 nfs4_stateid
*stateid
,
8280 struct rpc_cred
*cred
)
8282 struct nfs4_exception exception
= { };
8285 err
= _nfs41_test_stateid(server
, stateid
, cred
);
8286 if (err
!= -NFS4ERR_DELAY
)
8288 nfs4_handle_exception(server
, err
, &exception
);
8289 } while (exception
.retry
);
8293 struct nfs_free_stateid_data
{
8294 struct nfs_server
*server
;
8295 struct nfs41_free_stateid_args args
;
8296 struct nfs41_free_stateid_res res
;
8299 static void nfs41_free_stateid_prepare(struct rpc_task
*task
, void *calldata
)
8301 struct nfs_free_stateid_data
*data
= calldata
;
8302 nfs41_setup_sequence(nfs4_get_session(data
->server
),
8303 &data
->args
.seq_args
,
8308 static void nfs41_free_stateid_done(struct rpc_task
*task
, void *calldata
)
8310 struct nfs_free_stateid_data
*data
= calldata
;
8312 nfs41_sequence_done(task
, &data
->res
.seq_res
);
8314 switch (task
->tk_status
) {
8315 case -NFS4ERR_DELAY
:
8316 if (nfs4_async_handle_error(task
, data
->server
, NULL
, NULL
) == -EAGAIN
)
8317 rpc_restart_call_prepare(task
);
8321 static void nfs41_free_stateid_release(void *calldata
)
8326 static const struct rpc_call_ops nfs41_free_stateid_ops
= {
8327 .rpc_call_prepare
= nfs41_free_stateid_prepare
,
8328 .rpc_call_done
= nfs41_free_stateid_done
,
8329 .rpc_release
= nfs41_free_stateid_release
,
8332 static struct rpc_task
*_nfs41_free_stateid(struct nfs_server
*server
,
8333 nfs4_stateid
*stateid
,
8334 struct rpc_cred
*cred
,
8337 struct rpc_message msg
= {
8338 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FREE_STATEID
],
8341 struct rpc_task_setup task_setup
= {
8342 .rpc_client
= server
->client
,
8343 .rpc_message
= &msg
,
8344 .callback_ops
= &nfs41_free_stateid_ops
,
8345 .flags
= RPC_TASK_ASYNC
,
8347 struct nfs_free_stateid_data
*data
;
8349 nfs4_state_protect(server
->nfs_client
, NFS_SP4_MACH_CRED_STATEID
,
8350 &task_setup
.rpc_client
, &msg
);
8352 dprintk("NFS call free_stateid %p\n", stateid
);
8353 data
= kmalloc(sizeof(*data
), GFP_NOFS
);
8355 return ERR_PTR(-ENOMEM
);
8356 data
->server
= server
;
8357 nfs4_stateid_copy(&data
->args
.stateid
, stateid
);
8359 task_setup
.callback_data
= data
;
8361 msg
.rpc_argp
= &data
->args
;
8362 msg
.rpc_resp
= &data
->res
;
8363 nfs4_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 0);
8365 nfs4_set_sequence_privileged(&data
->args
.seq_args
);
8367 return rpc_run_task(&task_setup
);
8371 * nfs41_free_stateid - perform a FREE_STATEID operation
8373 * @server: server / transport on which to perform the operation
8374 * @stateid: state ID to release
8377 * Returns NFS_OK if the server freed "stateid". Otherwise a
8378 * negative NFS4ERR value is returned.
8380 static int nfs41_free_stateid(struct nfs_server
*server
,
8381 nfs4_stateid
*stateid
,
8382 struct rpc_cred
*cred
)
8384 struct rpc_task
*task
;
8387 task
= _nfs41_free_stateid(server
, stateid
, cred
, true);
8389 return PTR_ERR(task
);
8390 ret
= rpc_wait_for_completion_task(task
);
8392 ret
= task
->tk_status
;
8398 nfs41_free_lock_state(struct nfs_server
*server
, struct nfs4_lock_state
*lsp
)
8400 struct rpc_task
*task
;
8401 struct rpc_cred
*cred
= lsp
->ls_state
->owner
->so_cred
;
8403 task
= _nfs41_free_stateid(server
, &lsp
->ls_stateid
, cred
, false);
8404 nfs4_free_lock_state(server
, lsp
);
8410 static bool nfs41_match_stateid(const nfs4_stateid
*s1
,
8411 const nfs4_stateid
*s2
)
8413 if (memcmp(s1
->other
, s2
->other
, sizeof(s1
->other
)) != 0)
8416 if (s1
->seqid
== s2
->seqid
)
8418 if (s1
->seqid
== 0 || s2
->seqid
== 0)
8424 #endif /* CONFIG_NFS_V4_1 */
8426 static bool nfs4_match_stateid(const nfs4_stateid
*s1
,
8427 const nfs4_stateid
*s2
)
8429 return nfs4_stateid_match(s1
, s2
);
8433 static const struct nfs4_state_recovery_ops nfs40_reboot_recovery_ops
= {
8434 .owner_flag_bit
= NFS_OWNER_RECLAIM_REBOOT
,
8435 .state_flag_bit
= NFS_STATE_RECLAIM_REBOOT
,
8436 .recover_open
= nfs4_open_reclaim
,
8437 .recover_lock
= nfs4_lock_reclaim
,
8438 .establish_clid
= nfs4_init_clientid
,
8439 .detect_trunking
= nfs40_discover_server_trunking
,
8442 #if defined(CONFIG_NFS_V4_1)
8443 static const struct nfs4_state_recovery_ops nfs41_reboot_recovery_ops
= {
8444 .owner_flag_bit
= NFS_OWNER_RECLAIM_REBOOT
,
8445 .state_flag_bit
= NFS_STATE_RECLAIM_REBOOT
,
8446 .recover_open
= nfs4_open_reclaim
,
8447 .recover_lock
= nfs4_lock_reclaim
,
8448 .establish_clid
= nfs41_init_clientid
,
8449 .reclaim_complete
= nfs41_proc_reclaim_complete
,
8450 .detect_trunking
= nfs41_discover_server_trunking
,
8452 #endif /* CONFIG_NFS_V4_1 */
8454 static const struct nfs4_state_recovery_ops nfs40_nograce_recovery_ops
= {
8455 .owner_flag_bit
= NFS_OWNER_RECLAIM_NOGRACE
,
8456 .state_flag_bit
= NFS_STATE_RECLAIM_NOGRACE
,
8457 .recover_open
= nfs40_open_expired
,
8458 .recover_lock
= nfs4_lock_expired
,
8459 .establish_clid
= nfs4_init_clientid
,
8462 #if defined(CONFIG_NFS_V4_1)
8463 static const struct nfs4_state_recovery_ops nfs41_nograce_recovery_ops
= {
8464 .owner_flag_bit
= NFS_OWNER_RECLAIM_NOGRACE
,
8465 .state_flag_bit
= NFS_STATE_RECLAIM_NOGRACE
,
8466 .recover_open
= nfs41_open_expired
,
8467 .recover_lock
= nfs41_lock_expired
,
8468 .establish_clid
= nfs41_init_clientid
,
8470 #endif /* CONFIG_NFS_V4_1 */
8472 static const struct nfs4_state_maintenance_ops nfs40_state_renewal_ops
= {
8473 .sched_state_renewal
= nfs4_proc_async_renew
,
8474 .get_state_renewal_cred_locked
= nfs4_get_renew_cred_locked
,
8475 .renew_lease
= nfs4_proc_renew
,
8478 #if defined(CONFIG_NFS_V4_1)
8479 static const struct nfs4_state_maintenance_ops nfs41_state_renewal_ops
= {
8480 .sched_state_renewal
= nfs41_proc_async_sequence
,
8481 .get_state_renewal_cred_locked
= nfs4_get_machine_cred_locked
,
8482 .renew_lease
= nfs4_proc_sequence
,
8486 static const struct nfs4_mig_recovery_ops nfs40_mig_recovery_ops
= {
8487 .get_locations
= _nfs40_proc_get_locations
,
8488 .fsid_present
= _nfs40_proc_fsid_present
,
8491 #if defined(CONFIG_NFS_V4_1)
8492 static const struct nfs4_mig_recovery_ops nfs41_mig_recovery_ops
= {
8493 .get_locations
= _nfs41_proc_get_locations
,
8494 .fsid_present
= _nfs41_proc_fsid_present
,
8496 #endif /* CONFIG_NFS_V4_1 */
8498 static const struct nfs4_minor_version_ops nfs_v4_0_minor_ops
= {
8500 .init_caps
= NFS_CAP_READDIRPLUS
8501 | NFS_CAP_ATOMIC_OPEN
8502 | NFS_CAP_CHANGE_ATTR
8503 | NFS_CAP_POSIX_LOCK
,
8504 .init_client
= nfs40_init_client
,
8505 .shutdown_client
= nfs40_shutdown_client
,
8506 .match_stateid
= nfs4_match_stateid
,
8507 .find_root_sec
= nfs4_find_root_sec
,
8508 .free_lock_state
= nfs4_release_lockowner
,
8509 .alloc_seqid
= nfs_alloc_seqid
,
8510 .call_sync_ops
= &nfs40_call_sync_ops
,
8511 .reboot_recovery_ops
= &nfs40_reboot_recovery_ops
,
8512 .nograce_recovery_ops
= &nfs40_nograce_recovery_ops
,
8513 .state_renewal_ops
= &nfs40_state_renewal_ops
,
8514 .mig_recovery_ops
= &nfs40_mig_recovery_ops
,
8517 #if defined(CONFIG_NFS_V4_1)
8518 static struct nfs_seqid
*
8519 nfs_alloc_no_seqid(struct nfs_seqid_counter
*arg1
, gfp_t arg2
)
8524 static const struct nfs4_minor_version_ops nfs_v4_1_minor_ops
= {
8526 .init_caps
= NFS_CAP_READDIRPLUS
8527 | NFS_CAP_ATOMIC_OPEN
8528 | NFS_CAP_CHANGE_ATTR
8529 | NFS_CAP_POSIX_LOCK
8530 | NFS_CAP_STATEID_NFSV41
8531 | NFS_CAP_ATOMIC_OPEN_V1
,
8532 .init_client
= nfs41_init_client
,
8533 .shutdown_client
= nfs41_shutdown_client
,
8534 .match_stateid
= nfs41_match_stateid
,
8535 .find_root_sec
= nfs41_find_root_sec
,
8536 .free_lock_state
= nfs41_free_lock_state
,
8537 .alloc_seqid
= nfs_alloc_no_seqid
,
8538 .call_sync_ops
= &nfs41_call_sync_ops
,
8539 .reboot_recovery_ops
= &nfs41_reboot_recovery_ops
,
8540 .nograce_recovery_ops
= &nfs41_nograce_recovery_ops
,
8541 .state_renewal_ops
= &nfs41_state_renewal_ops
,
8542 .mig_recovery_ops
= &nfs41_mig_recovery_ops
,
8546 #if defined(CONFIG_NFS_V4_2)
8547 static const struct nfs4_minor_version_ops nfs_v4_2_minor_ops
= {
8549 .init_caps
= NFS_CAP_READDIRPLUS
8550 | NFS_CAP_ATOMIC_OPEN
8551 | NFS_CAP_CHANGE_ATTR
8552 | NFS_CAP_POSIX_LOCK
8553 | NFS_CAP_STATEID_NFSV41
8554 | NFS_CAP_ATOMIC_OPEN_V1
8556 | NFS_CAP_DEALLOCATE
8558 .init_client
= nfs41_init_client
,
8559 .shutdown_client
= nfs41_shutdown_client
,
8560 .match_stateid
= nfs41_match_stateid
,
8561 .find_root_sec
= nfs41_find_root_sec
,
8562 .free_lock_state
= nfs41_free_lock_state
,
8563 .call_sync_ops
= &nfs41_call_sync_ops
,
8564 .alloc_seqid
= nfs_alloc_no_seqid
,
8565 .reboot_recovery_ops
= &nfs41_reboot_recovery_ops
,
8566 .nograce_recovery_ops
= &nfs41_nograce_recovery_ops
,
8567 .state_renewal_ops
= &nfs41_state_renewal_ops
,
8571 const struct nfs4_minor_version_ops
*nfs_v4_minor_ops
[] = {
8572 [0] = &nfs_v4_0_minor_ops
,
8573 #if defined(CONFIG_NFS_V4_1)
8574 [1] = &nfs_v4_1_minor_ops
,
8576 #if defined(CONFIG_NFS_V4_2)
8577 [2] = &nfs_v4_2_minor_ops
,
8581 static const struct inode_operations nfs4_dir_inode_operations
= {
8582 .create
= nfs_create
,
8583 .lookup
= nfs_lookup
,
8584 .atomic_open
= nfs_atomic_open
,
8586 .unlink
= nfs_unlink
,
8587 .symlink
= nfs_symlink
,
8591 .rename
= nfs_rename
,
8592 .permission
= nfs_permission
,
8593 .getattr
= nfs_getattr
,
8594 .setattr
= nfs_setattr
,
8595 .getxattr
= generic_getxattr
,
8596 .setxattr
= generic_setxattr
,
8597 .listxattr
= generic_listxattr
,
8598 .removexattr
= generic_removexattr
,
8601 static const struct inode_operations nfs4_file_inode_operations
= {
8602 .permission
= nfs_permission
,
8603 .getattr
= nfs_getattr
,
8604 .setattr
= nfs_setattr
,
8605 .getxattr
= generic_getxattr
,
8606 .setxattr
= generic_setxattr
,
8607 .listxattr
= generic_listxattr
,
8608 .removexattr
= generic_removexattr
,
8611 const struct nfs_rpc_ops nfs_v4_clientops
= {
8612 .version
= 4, /* protocol version */
8613 .dentry_ops
= &nfs4_dentry_operations
,
8614 .dir_inode_ops
= &nfs4_dir_inode_operations
,
8615 .file_inode_ops
= &nfs4_file_inode_operations
,
8616 .file_ops
= &nfs4_file_operations
,
8617 .getroot
= nfs4_proc_get_root
,
8618 .submount
= nfs4_submount
,
8619 .try_mount
= nfs4_try_mount
,
8620 .getattr
= nfs4_proc_getattr
,
8621 .setattr
= nfs4_proc_setattr
,
8622 .lookup
= nfs4_proc_lookup
,
8623 .access
= nfs4_proc_access
,
8624 .readlink
= nfs4_proc_readlink
,
8625 .create
= nfs4_proc_create
,
8626 .remove
= nfs4_proc_remove
,
8627 .unlink_setup
= nfs4_proc_unlink_setup
,
8628 .unlink_rpc_prepare
= nfs4_proc_unlink_rpc_prepare
,
8629 .unlink_done
= nfs4_proc_unlink_done
,
8630 .rename_setup
= nfs4_proc_rename_setup
,
8631 .rename_rpc_prepare
= nfs4_proc_rename_rpc_prepare
,
8632 .rename_done
= nfs4_proc_rename_done
,
8633 .link
= nfs4_proc_link
,
8634 .symlink
= nfs4_proc_symlink
,
8635 .mkdir
= nfs4_proc_mkdir
,
8636 .rmdir
= nfs4_proc_remove
,
8637 .readdir
= nfs4_proc_readdir
,
8638 .mknod
= nfs4_proc_mknod
,
8639 .statfs
= nfs4_proc_statfs
,
8640 .fsinfo
= nfs4_proc_fsinfo
,
8641 .pathconf
= nfs4_proc_pathconf
,
8642 .set_capabilities
= nfs4_server_capabilities
,
8643 .decode_dirent
= nfs4_decode_dirent
,
8644 .pgio_rpc_prepare
= nfs4_proc_pgio_rpc_prepare
,
8645 .read_setup
= nfs4_proc_read_setup
,
8646 .read_done
= nfs4_read_done
,
8647 .write_setup
= nfs4_proc_write_setup
,
8648 .write_done
= nfs4_write_done
,
8649 .commit_setup
= nfs4_proc_commit_setup
,
8650 .commit_rpc_prepare
= nfs4_proc_commit_rpc_prepare
,
8651 .commit_done
= nfs4_commit_done
,
8652 .lock
= nfs4_proc_lock
,
8653 .clear_acl_cache
= nfs4_zap_acl_attr
,
8654 .close_context
= nfs4_close_context
,
8655 .open_context
= nfs4_atomic_open
,
8656 .have_delegation
= nfs4_have_delegation
,
8657 .return_delegation
= nfs4_inode_return_delegation
,
8658 .alloc_client
= nfs4_alloc_client
,
8659 .init_client
= nfs4_init_client
,
8660 .free_client
= nfs4_free_client
,
8661 .create_server
= nfs4_create_server
,
8662 .clone_server
= nfs_clone_server
,
8665 static const struct xattr_handler nfs4_xattr_nfs4_acl_handler
= {
8666 .prefix
= XATTR_NAME_NFSV4_ACL
,
8667 .list
= nfs4_xattr_list_nfs4_acl
,
8668 .get
= nfs4_xattr_get_nfs4_acl
,
8669 .set
= nfs4_xattr_set_nfs4_acl
,
8672 const struct xattr_handler
*nfs4_xattr_handlers
[] = {
8673 &nfs4_xattr_nfs4_acl_handler
,
8674 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
8675 &nfs4_xattr_nfs4_label_handler
,