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/file.h>
42 #include <linux/string.h>
43 #include <linux/ratelimit.h>
44 #include <linux/printk.h>
45 #include <linux/slab.h>
46 #include <linux/sunrpc/clnt.h>
47 #include <linux/nfs.h>
48 #include <linux/nfs4.h>
49 #include <linux/nfs_fs.h>
50 #include <linux/nfs_page.h>
51 #include <linux/nfs_mount.h>
52 #include <linux/namei.h>
53 #include <linux/mount.h>
54 #include <linux/module.h>
55 #include <linux/xattr.h>
56 #include <linux/utsname.h>
57 #include <linux/freezer.h>
60 #include "delegation.h"
66 #include "nfs4idmap.h"
67 #include "nfs4session.h"
70 #include "nfs4trace.h"
72 #define NFSDBG_FACILITY NFSDBG_PROC
74 #define NFS4_POLL_RETRY_MIN (HZ/10)
75 #define NFS4_POLL_RETRY_MAX (15*HZ)
78 static int _nfs4_proc_open(struct nfs4_opendata
*data
);
79 static int _nfs4_recover_proc_open(struct nfs4_opendata
*data
);
80 static int nfs4_do_fsinfo(struct nfs_server
*, struct nfs_fh
*, struct nfs_fsinfo
*);
81 static int nfs4_async_handle_error(struct rpc_task
*, const struct nfs_server
*, struct nfs4_state
*, long *);
82 static void nfs_fixup_referral_attributes(struct nfs_fattr
*fattr
);
83 static int nfs4_proc_getattr(struct nfs_server
*, struct nfs_fh
*, struct nfs_fattr
*, struct nfs4_label
*label
);
84 static int _nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
, struct nfs4_label
*label
);
85 static int nfs4_do_setattr(struct inode
*inode
, struct rpc_cred
*cred
,
86 struct nfs_fattr
*fattr
, struct iattr
*sattr
,
87 struct nfs4_state
*state
, struct nfs4_label
*ilabel
,
88 struct nfs4_label
*olabel
);
89 #ifdef CONFIG_NFS_V4_1
90 static int nfs41_test_stateid(struct nfs_server
*, nfs4_stateid
*,
92 static int nfs41_free_stateid(struct nfs_server
*, nfs4_stateid
*,
96 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
97 static inline struct nfs4_label
*
98 nfs4_label_init_security(struct inode
*dir
, struct dentry
*dentry
,
99 struct iattr
*sattr
, struct nfs4_label
*label
)
106 if (nfs_server_capable(dir
, NFS_CAP_SECURITY_LABEL
) == 0)
109 err
= security_dentry_init_security(dentry
, sattr
->ia_mode
,
110 &dentry
->d_name
, (void **)&label
->label
, &label
->len
);
117 nfs4_label_release_security(struct nfs4_label
*label
)
120 security_release_secctx(label
->label
, label
->len
);
122 static inline u32
*nfs4_bitmask(struct nfs_server
*server
, struct nfs4_label
*label
)
125 return server
->attr_bitmask
;
127 return server
->attr_bitmask_nl
;
130 static inline struct nfs4_label
*
131 nfs4_label_init_security(struct inode
*dir
, struct dentry
*dentry
,
132 struct iattr
*sattr
, struct nfs4_label
*l
)
135 nfs4_label_release_security(struct nfs4_label
*label
)
138 nfs4_bitmask(struct nfs_server
*server
, struct nfs4_label
*label
)
139 { return server
->attr_bitmask
; }
142 /* Prevent leaks of NFSv4 errors into userland */
143 static int nfs4_map_errors(int err
)
148 case -NFS4ERR_RESOURCE
:
149 case -NFS4ERR_LAYOUTTRYLATER
:
150 case -NFS4ERR_RECALLCONFLICT
:
152 case -NFS4ERR_WRONGSEC
:
153 case -NFS4ERR_WRONG_CRED
:
155 case -NFS4ERR_BADOWNER
:
156 case -NFS4ERR_BADNAME
:
158 case -NFS4ERR_SHARE_DENIED
:
160 case -NFS4ERR_MINOR_VERS_MISMATCH
:
161 return -EPROTONOSUPPORT
;
162 case -NFS4ERR_FILE_OPEN
:
165 dprintk("%s could not handle NFSv4 error %d\n",
173 * This is our standard bitmap for GETATTR requests.
175 const u32 nfs4_fattr_bitmap
[3] = {
177 | FATTR4_WORD0_CHANGE
180 | FATTR4_WORD0_FILEID
,
182 | FATTR4_WORD1_NUMLINKS
184 | FATTR4_WORD1_OWNER_GROUP
185 | FATTR4_WORD1_RAWDEV
186 | FATTR4_WORD1_SPACE_USED
187 | FATTR4_WORD1_TIME_ACCESS
188 | FATTR4_WORD1_TIME_METADATA
189 | FATTR4_WORD1_TIME_MODIFY
190 | FATTR4_WORD1_MOUNTED_ON_FILEID
,
191 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
192 FATTR4_WORD2_SECURITY_LABEL
196 static const u32 nfs4_pnfs_open_bitmap
[3] = {
198 | FATTR4_WORD0_CHANGE
201 | FATTR4_WORD0_FILEID
,
203 | FATTR4_WORD1_NUMLINKS
205 | FATTR4_WORD1_OWNER_GROUP
206 | FATTR4_WORD1_RAWDEV
207 | FATTR4_WORD1_SPACE_USED
208 | FATTR4_WORD1_TIME_ACCESS
209 | FATTR4_WORD1_TIME_METADATA
210 | FATTR4_WORD1_TIME_MODIFY
,
211 FATTR4_WORD2_MDSTHRESHOLD
214 static const u32 nfs4_open_noattr_bitmap
[3] = {
216 | FATTR4_WORD0_CHANGE
217 | FATTR4_WORD0_FILEID
,
220 const u32 nfs4_statfs_bitmap
[3] = {
221 FATTR4_WORD0_FILES_AVAIL
222 | FATTR4_WORD0_FILES_FREE
223 | FATTR4_WORD0_FILES_TOTAL
,
224 FATTR4_WORD1_SPACE_AVAIL
225 | FATTR4_WORD1_SPACE_FREE
226 | FATTR4_WORD1_SPACE_TOTAL
229 const u32 nfs4_pathconf_bitmap
[3] = {
231 | FATTR4_WORD0_MAXNAME
,
235 const u32 nfs4_fsinfo_bitmap
[3] = { FATTR4_WORD0_MAXFILESIZE
236 | FATTR4_WORD0_MAXREAD
237 | FATTR4_WORD0_MAXWRITE
238 | FATTR4_WORD0_LEASE_TIME
,
239 FATTR4_WORD1_TIME_DELTA
240 | FATTR4_WORD1_FS_LAYOUT_TYPES
,
241 FATTR4_WORD2_LAYOUT_BLKSIZE
244 const u32 nfs4_fs_locations_bitmap
[3] = {
246 | FATTR4_WORD0_CHANGE
249 | FATTR4_WORD0_FILEID
250 | FATTR4_WORD0_FS_LOCATIONS
,
252 | FATTR4_WORD1_NUMLINKS
254 | FATTR4_WORD1_OWNER_GROUP
255 | FATTR4_WORD1_RAWDEV
256 | FATTR4_WORD1_SPACE_USED
257 | FATTR4_WORD1_TIME_ACCESS
258 | FATTR4_WORD1_TIME_METADATA
259 | FATTR4_WORD1_TIME_MODIFY
260 | FATTR4_WORD1_MOUNTED_ON_FILEID
,
263 static void nfs4_setup_readdir(u64 cookie
, __be32
*verifier
, struct dentry
*dentry
,
264 struct nfs4_readdir_arg
*readdir
)
269 readdir
->cookie
= cookie
;
270 memcpy(&readdir
->verifier
, verifier
, sizeof(readdir
->verifier
));
275 memset(&readdir
->verifier
, 0, sizeof(readdir
->verifier
));
280 * NFSv4 servers do not return entries for '.' and '..'
281 * Therefore, we fake these entries here. We let '.'
282 * have cookie 0 and '..' have cookie 1. Note that
283 * when talking to the server, we always send cookie 0
286 start
= p
= kmap_atomic(*readdir
->pages
);
289 *p
++ = xdr_one
; /* next */
290 *p
++ = xdr_zero
; /* cookie, first word */
291 *p
++ = xdr_one
; /* cookie, second word */
292 *p
++ = xdr_one
; /* entry len */
293 memcpy(p
, ".\0\0\0", 4); /* entry */
295 *p
++ = xdr_one
; /* bitmap length */
296 *p
++ = htonl(FATTR4_WORD0_FILEID
); /* bitmap */
297 *p
++ = htonl(8); /* attribute buffer length */
298 p
= xdr_encode_hyper(p
, NFS_FILEID(d_inode(dentry
)));
301 *p
++ = xdr_one
; /* next */
302 *p
++ = xdr_zero
; /* cookie, first word */
303 *p
++ = xdr_two
; /* cookie, second word */
304 *p
++ = xdr_two
; /* entry len */
305 memcpy(p
, "..\0\0", 4); /* entry */
307 *p
++ = xdr_one
; /* bitmap length */
308 *p
++ = htonl(FATTR4_WORD0_FILEID
); /* bitmap */
309 *p
++ = htonl(8); /* attribute buffer length */
310 p
= xdr_encode_hyper(p
, NFS_FILEID(d_inode(dentry
->d_parent
)));
312 readdir
->pgbase
= (char *)p
- (char *)start
;
313 readdir
->count
-= readdir
->pgbase
;
314 kunmap_atomic(start
);
317 static long nfs4_update_delay(long *timeout
)
321 return NFS4_POLL_RETRY_MAX
;
323 *timeout
= NFS4_POLL_RETRY_MIN
;
324 if (*timeout
> NFS4_POLL_RETRY_MAX
)
325 *timeout
= NFS4_POLL_RETRY_MAX
;
331 static int nfs4_delay(struct rpc_clnt
*clnt
, long *timeout
)
337 freezable_schedule_timeout_killable_unsafe(
338 nfs4_update_delay(timeout
));
339 if (fatal_signal_pending(current
))
344 /* This is the error handling routine for processes that are allowed
347 int nfs4_handle_exception(struct nfs_server
*server
, int errorcode
, struct nfs4_exception
*exception
)
349 struct nfs_client
*clp
= server
->nfs_client
;
350 struct nfs4_state
*state
= exception
->state
;
351 struct inode
*inode
= exception
->inode
;
354 exception
->retry
= 0;
358 case -NFS4ERR_OPENMODE
:
359 case -NFS4ERR_DELEG_REVOKED
:
360 case -NFS4ERR_ADMIN_REVOKED
:
361 case -NFS4ERR_BAD_STATEID
:
362 if (inode
&& nfs4_have_delegation(inode
, FMODE_READ
)) {
363 nfs4_inode_return_delegation(inode
);
364 exception
->retry
= 1;
369 ret
= nfs4_schedule_stateid_recovery(server
, state
);
372 goto wait_on_recovery
;
373 case -NFS4ERR_EXPIRED
:
375 ret
= nfs4_schedule_stateid_recovery(server
, state
);
379 case -NFS4ERR_STALE_STATEID
:
380 case -NFS4ERR_STALE_CLIENTID
:
381 nfs4_schedule_lease_recovery(clp
);
382 goto wait_on_recovery
;
384 ret
= nfs4_schedule_migration_recovery(server
);
387 goto wait_on_recovery
;
388 case -NFS4ERR_LEASE_MOVED
:
389 nfs4_schedule_lease_moved_recovery(clp
);
390 goto wait_on_recovery
;
391 #if defined(CONFIG_NFS_V4_1)
392 case -NFS4ERR_BADSESSION
:
393 case -NFS4ERR_BADSLOT
:
394 case -NFS4ERR_BAD_HIGH_SLOT
:
395 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
396 case -NFS4ERR_DEADSESSION
:
397 case -NFS4ERR_SEQ_FALSE_RETRY
:
398 case -NFS4ERR_SEQ_MISORDERED
:
399 dprintk("%s ERROR: %d Reset session\n", __func__
,
401 nfs4_schedule_session_recovery(clp
->cl_session
, errorcode
);
402 goto wait_on_recovery
;
403 #endif /* defined(CONFIG_NFS_V4_1) */
404 case -NFS4ERR_FILE_OPEN
:
405 if (exception
->timeout
> HZ
) {
406 /* We have retried a decent amount, time to
414 ret
= nfs4_delay(server
->client
, &exception
->timeout
);
417 case -NFS4ERR_RETRY_UNCACHED_REP
:
418 case -NFS4ERR_OLD_STATEID
:
419 exception
->retry
= 1;
421 case -NFS4ERR_BADOWNER
:
422 /* The following works around a Linux server bug! */
423 case -NFS4ERR_BADNAME
:
424 if (server
->caps
& NFS_CAP_UIDGID_NOMAP
) {
425 server
->caps
&= ~NFS_CAP_UIDGID_NOMAP
;
426 exception
->retry
= 1;
427 printk(KERN_WARNING
"NFS: v4 server %s "
428 "does not accept raw "
430 "Reenabling the idmapper.\n",
431 server
->nfs_client
->cl_hostname
);
434 /* We failed to handle the error */
435 return nfs4_map_errors(ret
);
437 ret
= nfs4_wait_clnt_recover(clp
);
438 if (test_bit(NFS_MIG_FAILED
, &server
->mig_status
))
441 exception
->retry
= 1;
446 * Return 'true' if 'clp' is using an rpc_client that is integrity protected
447 * or 'false' otherwise.
449 static bool _nfs4_is_integrity_protected(struct nfs_client
*clp
)
451 rpc_authflavor_t flavor
= clp
->cl_rpcclient
->cl_auth
->au_flavor
;
453 if (flavor
== RPC_AUTH_GSS_KRB5I
||
454 flavor
== RPC_AUTH_GSS_KRB5P
)
460 static void do_renew_lease(struct nfs_client
*clp
, unsigned long timestamp
)
462 spin_lock(&clp
->cl_lock
);
463 if (time_before(clp
->cl_last_renewal
,timestamp
))
464 clp
->cl_last_renewal
= timestamp
;
465 spin_unlock(&clp
->cl_lock
);
468 static void renew_lease(const struct nfs_server
*server
, unsigned long timestamp
)
470 struct nfs_client
*clp
= server
->nfs_client
;
472 if (!nfs4_has_session(clp
))
473 do_renew_lease(clp
, timestamp
);
476 struct nfs4_call_sync_data
{
477 const struct nfs_server
*seq_server
;
478 struct nfs4_sequence_args
*seq_args
;
479 struct nfs4_sequence_res
*seq_res
;
482 void nfs4_init_sequence(struct nfs4_sequence_args
*args
,
483 struct nfs4_sequence_res
*res
, int cache_reply
)
485 args
->sa_slot
= NULL
;
486 args
->sa_cache_this
= cache_reply
;
487 args
->sa_privileged
= 0;
492 static void nfs4_set_sequence_privileged(struct nfs4_sequence_args
*args
)
494 args
->sa_privileged
= 1;
497 int nfs40_setup_sequence(struct nfs4_slot_table
*tbl
,
498 struct nfs4_sequence_args
*args
,
499 struct nfs4_sequence_res
*res
,
500 struct rpc_task
*task
)
502 struct nfs4_slot
*slot
;
504 /* slot already allocated? */
505 if (res
->sr_slot
!= NULL
)
508 spin_lock(&tbl
->slot_tbl_lock
);
509 if (nfs4_slot_tbl_draining(tbl
) && !args
->sa_privileged
)
512 slot
= nfs4_alloc_slot(tbl
);
514 if (slot
== ERR_PTR(-ENOMEM
))
515 task
->tk_timeout
= HZ
>> 2;
518 spin_unlock(&tbl
->slot_tbl_lock
);
520 args
->sa_slot
= slot
;
524 rpc_call_start(task
);
528 if (args
->sa_privileged
)
529 rpc_sleep_on_priority(&tbl
->slot_tbl_waitq
, task
,
530 NULL
, RPC_PRIORITY_PRIVILEGED
);
532 rpc_sleep_on(&tbl
->slot_tbl_waitq
, task
, NULL
);
533 spin_unlock(&tbl
->slot_tbl_lock
);
536 EXPORT_SYMBOL_GPL(nfs40_setup_sequence
);
538 static int nfs40_sequence_done(struct rpc_task
*task
,
539 struct nfs4_sequence_res
*res
)
541 struct nfs4_slot
*slot
= res
->sr_slot
;
542 struct nfs4_slot_table
*tbl
;
548 spin_lock(&tbl
->slot_tbl_lock
);
549 if (!nfs41_wake_and_assign_slot(tbl
, slot
))
550 nfs4_free_slot(tbl
, slot
);
551 spin_unlock(&tbl
->slot_tbl_lock
);
558 #if defined(CONFIG_NFS_V4_1)
560 static void nfs41_sequence_free_slot(struct nfs4_sequence_res
*res
)
562 struct nfs4_session
*session
;
563 struct nfs4_slot_table
*tbl
;
564 struct nfs4_slot
*slot
= res
->sr_slot
;
565 bool send_new_highest_used_slotid
= false;
568 session
= tbl
->session
;
570 spin_lock(&tbl
->slot_tbl_lock
);
571 /* Be nice to the server: try to ensure that the last transmitted
572 * value for highest_user_slotid <= target_highest_slotid
574 if (tbl
->highest_used_slotid
> tbl
->target_highest_slotid
)
575 send_new_highest_used_slotid
= true;
577 if (nfs41_wake_and_assign_slot(tbl
, slot
)) {
578 send_new_highest_used_slotid
= false;
581 nfs4_free_slot(tbl
, slot
);
583 if (tbl
->highest_used_slotid
!= NFS4_NO_SLOT
)
584 send_new_highest_used_slotid
= false;
586 spin_unlock(&tbl
->slot_tbl_lock
);
588 if (send_new_highest_used_slotid
)
589 nfs41_server_notify_highest_slotid_update(session
->clp
);
592 int nfs41_sequence_done(struct rpc_task
*task
, struct nfs4_sequence_res
*res
)
594 struct nfs4_session
*session
;
595 struct nfs4_slot
*slot
= res
->sr_slot
;
596 struct nfs_client
*clp
;
597 bool interrupted
= false;
602 /* don't increment the sequence number if the task wasn't sent */
603 if (!RPC_WAS_SENT(task
))
606 session
= slot
->table
->session
;
608 if (slot
->interrupted
) {
609 slot
->interrupted
= 0;
613 trace_nfs4_sequence_done(session
, res
);
614 /* Check the SEQUENCE operation status */
615 switch (res
->sr_status
) {
617 /* Update the slot's sequence and clientid lease timer */
620 do_renew_lease(clp
, res
->sr_timestamp
);
621 /* Check sequence flags */
622 nfs41_handle_sequence_flag_errors(clp
, res
->sr_status_flags
);
623 nfs41_update_target_slotid(slot
->table
, slot
, res
);
627 * sr_status remains 1 if an RPC level error occurred.
628 * The server may or may not have processed the sequence
630 * Mark the slot as having hosted an interrupted RPC call.
632 slot
->interrupted
= 1;
635 /* The server detected a resend of the RPC call and
636 * returned NFS4ERR_DELAY as per Section 2.10.6.2
639 dprintk("%s: slot=%u seq=%u: Operation in progress\n",
644 case -NFS4ERR_BADSLOT
:
646 * The slot id we used was probably retired. Try again
647 * using a different slot id.
650 case -NFS4ERR_SEQ_MISORDERED
:
652 * Was the last operation on this sequence interrupted?
653 * If so, retry after bumping the sequence number.
660 * Could this slot have been previously retired?
661 * If so, then the server may be expecting seq_nr = 1!
663 if (slot
->seq_nr
!= 1) {
668 case -NFS4ERR_SEQ_FALSE_RETRY
:
672 /* Just update the slot sequence no. */
676 /* The session may be reset by one of the error handlers. */
677 dprintk("%s: Error %d free the slot \n", __func__
, res
->sr_status
);
678 nfs41_sequence_free_slot(res
);
682 if (rpc_restart_call_prepare(task
)) {
688 if (!rpc_restart_call(task
))
690 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
693 EXPORT_SYMBOL_GPL(nfs41_sequence_done
);
695 int nfs4_sequence_done(struct rpc_task
*task
, struct nfs4_sequence_res
*res
)
697 if (res
->sr_slot
== NULL
)
699 if (!res
->sr_slot
->table
->session
)
700 return nfs40_sequence_done(task
, res
);
701 return nfs41_sequence_done(task
, res
);
703 EXPORT_SYMBOL_GPL(nfs4_sequence_done
);
705 int nfs41_setup_sequence(struct nfs4_session
*session
,
706 struct nfs4_sequence_args
*args
,
707 struct nfs4_sequence_res
*res
,
708 struct rpc_task
*task
)
710 struct nfs4_slot
*slot
;
711 struct nfs4_slot_table
*tbl
;
713 dprintk("--> %s\n", __func__
);
714 /* slot already allocated? */
715 if (res
->sr_slot
!= NULL
)
718 tbl
= &session
->fc_slot_table
;
720 task
->tk_timeout
= 0;
722 spin_lock(&tbl
->slot_tbl_lock
);
723 if (test_bit(NFS4_SLOT_TBL_DRAINING
, &tbl
->slot_tbl_state
) &&
724 !args
->sa_privileged
) {
725 /* The state manager will wait until the slot table is empty */
726 dprintk("%s session is draining\n", __func__
);
730 slot
= nfs4_alloc_slot(tbl
);
732 /* If out of memory, try again in 1/4 second */
733 if (slot
== ERR_PTR(-ENOMEM
))
734 task
->tk_timeout
= HZ
>> 2;
735 dprintk("<-- %s: no free slots\n", __func__
);
738 spin_unlock(&tbl
->slot_tbl_lock
);
740 args
->sa_slot
= slot
;
742 dprintk("<-- %s slotid=%u seqid=%u\n", __func__
,
743 slot
->slot_nr
, slot
->seq_nr
);
746 res
->sr_timestamp
= jiffies
;
747 res
->sr_status_flags
= 0;
749 * sr_status is only set in decode_sequence, and so will remain
750 * set to 1 if an rpc level failure occurs.
753 trace_nfs4_setup_sequence(session
, args
);
755 rpc_call_start(task
);
758 /* Privileged tasks are queued with top priority */
759 if (args
->sa_privileged
)
760 rpc_sleep_on_priority(&tbl
->slot_tbl_waitq
, task
,
761 NULL
, RPC_PRIORITY_PRIVILEGED
);
763 rpc_sleep_on(&tbl
->slot_tbl_waitq
, task
, NULL
);
764 spin_unlock(&tbl
->slot_tbl_lock
);
767 EXPORT_SYMBOL_GPL(nfs41_setup_sequence
);
769 static int nfs4_setup_sequence(const struct nfs_server
*server
,
770 struct nfs4_sequence_args
*args
,
771 struct nfs4_sequence_res
*res
,
772 struct rpc_task
*task
)
774 struct nfs4_session
*session
= nfs4_get_session(server
);
778 return nfs40_setup_sequence(server
->nfs_client
->cl_slot_tbl
,
781 dprintk("--> %s clp %p session %p sr_slot %u\n",
782 __func__
, session
->clp
, session
, res
->sr_slot
?
783 res
->sr_slot
->slot_nr
: NFS4_NO_SLOT
);
785 ret
= nfs41_setup_sequence(session
, args
, res
, task
);
787 dprintk("<-- %s status=%d\n", __func__
, ret
);
791 static void nfs41_call_sync_prepare(struct rpc_task
*task
, void *calldata
)
793 struct nfs4_call_sync_data
*data
= calldata
;
794 struct nfs4_session
*session
= nfs4_get_session(data
->seq_server
);
796 dprintk("--> %s data->seq_server %p\n", __func__
, data
->seq_server
);
798 nfs41_setup_sequence(session
, data
->seq_args
, data
->seq_res
, task
);
801 static void nfs41_call_sync_done(struct rpc_task
*task
, void *calldata
)
803 struct nfs4_call_sync_data
*data
= calldata
;
805 nfs41_sequence_done(task
, data
->seq_res
);
808 static const struct rpc_call_ops nfs41_call_sync_ops
= {
809 .rpc_call_prepare
= nfs41_call_sync_prepare
,
810 .rpc_call_done
= nfs41_call_sync_done
,
813 #else /* !CONFIG_NFS_V4_1 */
815 static int nfs4_setup_sequence(const struct nfs_server
*server
,
816 struct nfs4_sequence_args
*args
,
817 struct nfs4_sequence_res
*res
,
818 struct rpc_task
*task
)
820 return nfs40_setup_sequence(server
->nfs_client
->cl_slot_tbl
,
824 int nfs4_sequence_done(struct rpc_task
*task
,
825 struct nfs4_sequence_res
*res
)
827 return nfs40_sequence_done(task
, res
);
829 EXPORT_SYMBOL_GPL(nfs4_sequence_done
);
831 #endif /* !CONFIG_NFS_V4_1 */
833 static void nfs40_call_sync_prepare(struct rpc_task
*task
, void *calldata
)
835 struct nfs4_call_sync_data
*data
= calldata
;
836 nfs4_setup_sequence(data
->seq_server
,
837 data
->seq_args
, data
->seq_res
, task
);
840 static void nfs40_call_sync_done(struct rpc_task
*task
, void *calldata
)
842 struct nfs4_call_sync_data
*data
= calldata
;
843 nfs4_sequence_done(task
, data
->seq_res
);
846 static const struct rpc_call_ops nfs40_call_sync_ops
= {
847 .rpc_call_prepare
= nfs40_call_sync_prepare
,
848 .rpc_call_done
= nfs40_call_sync_done
,
851 static int nfs4_call_sync_sequence(struct rpc_clnt
*clnt
,
852 struct nfs_server
*server
,
853 struct rpc_message
*msg
,
854 struct nfs4_sequence_args
*args
,
855 struct nfs4_sequence_res
*res
)
858 struct rpc_task
*task
;
859 struct nfs_client
*clp
= server
->nfs_client
;
860 struct nfs4_call_sync_data data
= {
861 .seq_server
= server
,
865 struct rpc_task_setup task_setup
= {
868 .callback_ops
= clp
->cl_mvops
->call_sync_ops
,
869 .callback_data
= &data
872 task
= rpc_run_task(&task_setup
);
876 ret
= task
->tk_status
;
882 int nfs4_call_sync(struct rpc_clnt
*clnt
,
883 struct nfs_server
*server
,
884 struct rpc_message
*msg
,
885 struct nfs4_sequence_args
*args
,
886 struct nfs4_sequence_res
*res
,
889 nfs4_init_sequence(args
, res
, cache_reply
);
890 return nfs4_call_sync_sequence(clnt
, server
, msg
, args
, res
);
893 static void update_changeattr(struct inode
*dir
, struct nfs4_change_info
*cinfo
)
895 struct nfs_inode
*nfsi
= NFS_I(dir
);
897 spin_lock(&dir
->i_lock
);
898 nfsi
->cache_validity
|= NFS_INO_INVALID_ATTR
|NFS_INO_INVALID_DATA
;
899 if (!cinfo
->atomic
|| cinfo
->before
!= dir
->i_version
)
900 nfs_force_lookup_revalidate(dir
);
901 dir
->i_version
= cinfo
->after
;
902 nfsi
->attr_gencount
= nfs_inc_attr_generation_counter();
903 nfs_fscache_invalidate(dir
);
904 spin_unlock(&dir
->i_lock
);
907 struct nfs4_opendata
{
909 struct nfs_openargs o_arg
;
910 struct nfs_openres o_res
;
911 struct nfs_open_confirmargs c_arg
;
912 struct nfs_open_confirmres c_res
;
913 struct nfs4_string owner_name
;
914 struct nfs4_string group_name
;
915 struct nfs_fattr f_attr
;
916 struct nfs4_label
*f_label
;
918 struct dentry
*dentry
;
919 struct nfs4_state_owner
*owner
;
920 struct nfs4_state
*state
;
922 unsigned long timestamp
;
923 unsigned int rpc_done
: 1;
924 unsigned int file_created
: 1;
925 unsigned int is_recover
: 1;
930 static bool nfs4_clear_cap_atomic_open_v1(struct nfs_server
*server
,
931 int err
, struct nfs4_exception
*exception
)
935 if (!(server
->caps
& NFS_CAP_ATOMIC_OPEN_V1
))
937 server
->caps
&= ~NFS_CAP_ATOMIC_OPEN_V1
;
938 exception
->retry
= 1;
943 nfs4_map_atomic_open_share(struct nfs_server
*server
,
944 fmode_t fmode
, int openflags
)
948 switch (fmode
& (FMODE_READ
| FMODE_WRITE
)) {
950 res
= NFS4_SHARE_ACCESS_READ
;
953 res
= NFS4_SHARE_ACCESS_WRITE
;
955 case FMODE_READ
|FMODE_WRITE
:
956 res
= NFS4_SHARE_ACCESS_BOTH
;
958 if (!(server
->caps
& NFS_CAP_ATOMIC_OPEN_V1
))
960 /* Want no delegation if we're using O_DIRECT */
961 if (openflags
& O_DIRECT
)
962 res
|= NFS4_SHARE_WANT_NO_DELEG
;
967 static enum open_claim_type4
968 nfs4_map_atomic_open_claim(struct nfs_server
*server
,
969 enum open_claim_type4 claim
)
971 if (server
->caps
& NFS_CAP_ATOMIC_OPEN_V1
)
976 case NFS4_OPEN_CLAIM_FH
:
977 return NFS4_OPEN_CLAIM_NULL
;
978 case NFS4_OPEN_CLAIM_DELEG_CUR_FH
:
979 return NFS4_OPEN_CLAIM_DELEGATE_CUR
;
980 case NFS4_OPEN_CLAIM_DELEG_PREV_FH
:
981 return NFS4_OPEN_CLAIM_DELEGATE_PREV
;
985 static void nfs4_init_opendata_res(struct nfs4_opendata
*p
)
987 p
->o_res
.f_attr
= &p
->f_attr
;
988 p
->o_res
.f_label
= p
->f_label
;
989 p
->o_res
.seqid
= p
->o_arg
.seqid
;
990 p
->c_res
.seqid
= p
->c_arg
.seqid
;
991 p
->o_res
.server
= p
->o_arg
.server
;
992 p
->o_res
.access_request
= p
->o_arg
.access
;
993 nfs_fattr_init(&p
->f_attr
);
994 nfs_fattr_init_names(&p
->f_attr
, &p
->owner_name
, &p
->group_name
);
997 static struct nfs4_opendata
*nfs4_opendata_alloc(struct dentry
*dentry
,
998 struct nfs4_state_owner
*sp
, fmode_t fmode
, int flags
,
999 const struct iattr
*attrs
,
1000 struct nfs4_label
*label
,
1001 enum open_claim_type4 claim
,
1004 struct dentry
*parent
= dget_parent(dentry
);
1005 struct inode
*dir
= d_inode(parent
);
1006 struct nfs_server
*server
= NFS_SERVER(dir
);
1007 struct nfs_seqid
*(*alloc_seqid
)(struct nfs_seqid_counter
*, gfp_t
);
1008 struct nfs4_opendata
*p
;
1010 p
= kzalloc(sizeof(*p
), gfp_mask
);
1014 p
->f_label
= nfs4_label_alloc(server
, gfp_mask
);
1015 if (IS_ERR(p
->f_label
))
1018 alloc_seqid
= server
->nfs_client
->cl_mvops
->alloc_seqid
;
1019 p
->o_arg
.seqid
= alloc_seqid(&sp
->so_seqid
, gfp_mask
);
1020 if (IS_ERR(p
->o_arg
.seqid
))
1021 goto err_free_label
;
1022 nfs_sb_active(dentry
->d_sb
);
1023 p
->dentry
= dget(dentry
);
1026 atomic_inc(&sp
->so_count
);
1027 p
->o_arg
.open_flags
= flags
;
1028 p
->o_arg
.fmode
= fmode
& (FMODE_READ
|FMODE_WRITE
);
1029 p
->o_arg
.share_access
= nfs4_map_atomic_open_share(server
,
1031 /* don't put an ACCESS op in OPEN compound if O_EXCL, because ACCESS
1032 * will return permission denied for all bits until close */
1033 if (!(flags
& O_EXCL
)) {
1034 /* ask server to check for all possible rights as results
1036 p
->o_arg
.access
= NFS4_ACCESS_READ
| NFS4_ACCESS_MODIFY
|
1037 NFS4_ACCESS_EXTEND
| NFS4_ACCESS_EXECUTE
;
1039 p
->o_arg
.clientid
= server
->nfs_client
->cl_clientid
;
1040 p
->o_arg
.id
.create_time
= ktime_to_ns(sp
->so_seqid
.create_time
);
1041 p
->o_arg
.id
.uniquifier
= sp
->so_seqid
.owner_id
;
1042 p
->o_arg
.name
= &dentry
->d_name
;
1043 p
->o_arg
.server
= server
;
1044 p
->o_arg
.bitmask
= nfs4_bitmask(server
, label
);
1045 p
->o_arg
.open_bitmap
= &nfs4_fattr_bitmap
[0];
1046 p
->o_arg
.label
= label
;
1047 p
->o_arg
.claim
= nfs4_map_atomic_open_claim(server
, claim
);
1048 switch (p
->o_arg
.claim
) {
1049 case NFS4_OPEN_CLAIM_NULL
:
1050 case NFS4_OPEN_CLAIM_DELEGATE_CUR
:
1051 case NFS4_OPEN_CLAIM_DELEGATE_PREV
:
1052 p
->o_arg
.fh
= NFS_FH(dir
);
1054 case NFS4_OPEN_CLAIM_PREVIOUS
:
1055 case NFS4_OPEN_CLAIM_FH
:
1056 case NFS4_OPEN_CLAIM_DELEG_CUR_FH
:
1057 case NFS4_OPEN_CLAIM_DELEG_PREV_FH
:
1058 p
->o_arg
.fh
= NFS_FH(d_inode(dentry
));
1060 if (attrs
!= NULL
&& attrs
->ia_valid
!= 0) {
1063 p
->o_arg
.u
.attrs
= &p
->attrs
;
1064 memcpy(&p
->attrs
, attrs
, sizeof(p
->attrs
));
1067 verf
[1] = current
->pid
;
1068 memcpy(p
->o_arg
.u
.verifier
.data
, verf
,
1069 sizeof(p
->o_arg
.u
.verifier
.data
));
1071 p
->c_arg
.fh
= &p
->o_res
.fh
;
1072 p
->c_arg
.stateid
= &p
->o_res
.stateid
;
1073 p
->c_arg
.seqid
= p
->o_arg
.seqid
;
1074 nfs4_init_opendata_res(p
);
1075 kref_init(&p
->kref
);
1079 nfs4_label_free(p
->f_label
);
1087 static void nfs4_opendata_free(struct kref
*kref
)
1089 struct nfs4_opendata
*p
= container_of(kref
,
1090 struct nfs4_opendata
, kref
);
1091 struct super_block
*sb
= p
->dentry
->d_sb
;
1093 nfs_free_seqid(p
->o_arg
.seqid
);
1094 if (p
->state
!= NULL
)
1095 nfs4_put_open_state(p
->state
);
1096 nfs4_put_state_owner(p
->owner
);
1098 nfs4_label_free(p
->f_label
);
1102 nfs_sb_deactive(sb
);
1103 nfs_fattr_free_names(&p
->f_attr
);
1104 kfree(p
->f_attr
.mdsthreshold
);
1108 static void nfs4_opendata_put(struct nfs4_opendata
*p
)
1111 kref_put(&p
->kref
, nfs4_opendata_free
);
1114 static int nfs4_wait_for_completion_rpc_task(struct rpc_task
*task
)
1118 ret
= rpc_wait_for_completion_task(task
);
1122 static int can_open_cached(struct nfs4_state
*state
, fmode_t mode
, int open_mode
)
1126 if (open_mode
& (O_EXCL
|O_TRUNC
))
1128 switch (mode
& (FMODE_READ
|FMODE_WRITE
)) {
1130 ret
|= test_bit(NFS_O_RDONLY_STATE
, &state
->flags
) != 0
1131 && state
->n_rdonly
!= 0;
1134 ret
|= test_bit(NFS_O_WRONLY_STATE
, &state
->flags
) != 0
1135 && state
->n_wronly
!= 0;
1137 case FMODE_READ
|FMODE_WRITE
:
1138 ret
|= test_bit(NFS_O_RDWR_STATE
, &state
->flags
) != 0
1139 && state
->n_rdwr
!= 0;
1145 static int can_open_delegated(struct nfs_delegation
*delegation
, fmode_t fmode
)
1147 if (delegation
== NULL
)
1149 if ((delegation
->type
& fmode
) != fmode
)
1151 if (test_bit(NFS_DELEGATION_RETURNING
, &delegation
->flags
))
1153 nfs_mark_delegation_referenced(delegation
);
1157 static void update_open_stateflags(struct nfs4_state
*state
, fmode_t fmode
)
1166 case FMODE_READ
|FMODE_WRITE
:
1169 nfs4_state_set_mode_locked(state
, state
->state
| fmode
);
1172 static void nfs_test_and_clear_all_open_stateid(struct nfs4_state
*state
)
1174 struct nfs_client
*clp
= state
->owner
->so_server
->nfs_client
;
1175 bool need_recover
= false;
1177 if (test_and_clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
) && state
->n_rdonly
)
1178 need_recover
= true;
1179 if (test_and_clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
) && state
->n_wronly
)
1180 need_recover
= true;
1181 if (test_and_clear_bit(NFS_O_RDWR_STATE
, &state
->flags
) && state
->n_rdwr
)
1182 need_recover
= true;
1184 nfs4_state_mark_reclaim_nograce(clp
, state
);
1187 static bool nfs_need_update_open_stateid(struct nfs4_state
*state
,
1188 nfs4_stateid
*stateid
)
1190 if (test_and_set_bit(NFS_OPEN_STATE
, &state
->flags
) == 0)
1192 if (!nfs4_stateid_match_other(stateid
, &state
->open_stateid
)) {
1193 nfs_test_and_clear_all_open_stateid(state
);
1196 if (nfs4_stateid_is_newer(stateid
, &state
->open_stateid
))
1201 static void nfs_resync_open_stateid_locked(struct nfs4_state
*state
)
1203 if (!(state
->n_wronly
|| state
->n_rdonly
|| state
->n_rdwr
))
1205 if (state
->n_wronly
)
1206 set_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1207 if (state
->n_rdonly
)
1208 set_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1210 set_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1211 set_bit(NFS_OPEN_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 if ((opendata
->o_arg
.claim
== NFS4_OPEN_CLAIM_DELEGATE_CUR
||
1556 opendata
->o_arg
.claim
== NFS4_OPEN_CLAIM_DELEG_CUR_FH
) &&
1557 (opendata
->o_arg
.u
.delegation_type
& fmode
) != fmode
)
1558 /* This mode can't have been delegated, so we must have
1559 * a valid open_stateid to cover it - not need to reclaim.
1562 opendata
->o_arg
.open_flags
= 0;
1563 opendata
->o_arg
.fmode
= fmode
;
1564 opendata
->o_arg
.share_access
= nfs4_map_atomic_open_share(
1565 NFS_SB(opendata
->dentry
->d_sb
),
1567 memset(&opendata
->o_res
, 0, sizeof(opendata
->o_res
));
1568 memset(&opendata
->c_res
, 0, sizeof(opendata
->c_res
));
1569 nfs4_init_opendata_res(opendata
);
1570 ret
= _nfs4_recover_proc_open(opendata
);
1573 newstate
= nfs4_opendata_to_nfs4_state(opendata
);
1574 if (IS_ERR(newstate
))
1575 return PTR_ERR(newstate
);
1576 nfs4_close_state(newstate
, fmode
);
1581 static int nfs4_open_recover(struct nfs4_opendata
*opendata
, struct nfs4_state
*state
)
1583 struct nfs4_state
*newstate
;
1586 /* Don't trigger recovery in nfs_test_and_clear_all_open_stateid */
1587 clear_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1588 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1589 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1590 /* memory barrier prior to reading state->n_* */
1591 clear_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1592 clear_bit(NFS_OPEN_STATE
, &state
->flags
);
1594 if (state
->n_rdwr
!= 0) {
1595 ret
= nfs4_open_recover_helper(opendata
, FMODE_READ
|FMODE_WRITE
, &newstate
);
1598 if (newstate
!= state
)
1601 if (state
->n_wronly
!= 0) {
1602 ret
= nfs4_open_recover_helper(opendata
, FMODE_WRITE
, &newstate
);
1605 if (newstate
!= state
)
1608 if (state
->n_rdonly
!= 0) {
1609 ret
= nfs4_open_recover_helper(opendata
, FMODE_READ
, &newstate
);
1612 if (newstate
!= state
)
1616 * We may have performed cached opens for all three recoveries.
1617 * Check if we need to update the current stateid.
1619 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0 &&
1620 !nfs4_stateid_match(&state
->stateid
, &state
->open_stateid
)) {
1621 write_seqlock(&state
->seqlock
);
1622 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0)
1623 nfs4_stateid_copy(&state
->stateid
, &state
->open_stateid
);
1624 write_sequnlock(&state
->seqlock
);
1631 * reclaim state on the server after a reboot.
1633 static int _nfs4_do_open_reclaim(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1635 struct nfs_delegation
*delegation
;
1636 struct nfs4_opendata
*opendata
;
1637 fmode_t delegation_type
= 0;
1640 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
,
1641 NFS4_OPEN_CLAIM_PREVIOUS
);
1642 if (IS_ERR(opendata
))
1643 return PTR_ERR(opendata
);
1645 delegation
= rcu_dereference(NFS_I(state
->inode
)->delegation
);
1646 if (delegation
!= NULL
&& test_bit(NFS_DELEGATION_NEED_RECLAIM
, &delegation
->flags
) != 0)
1647 delegation_type
= delegation
->type
;
1649 opendata
->o_arg
.u
.delegation_type
= delegation_type
;
1650 status
= nfs4_open_recover(opendata
, state
);
1651 nfs4_opendata_put(opendata
);
1655 static int nfs4_do_open_reclaim(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1657 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1658 struct nfs4_exception exception
= { };
1661 err
= _nfs4_do_open_reclaim(ctx
, state
);
1662 trace_nfs4_open_reclaim(ctx
, 0, err
);
1663 if (nfs4_clear_cap_atomic_open_v1(server
, err
, &exception
))
1665 if (err
!= -NFS4ERR_DELAY
)
1667 nfs4_handle_exception(server
, err
, &exception
);
1668 } while (exception
.retry
);
1672 static int nfs4_open_reclaim(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
1674 struct nfs_open_context
*ctx
;
1677 ctx
= nfs4_state_find_open_context(state
);
1680 ret
= nfs4_do_open_reclaim(ctx
, state
);
1681 put_nfs_open_context(ctx
);
1685 static int nfs4_handle_delegation_recall_error(struct nfs_server
*server
, struct nfs4_state
*state
, const nfs4_stateid
*stateid
, int err
)
1689 printk(KERN_ERR
"NFS: %s: unhandled error "
1690 "%d.\n", __func__
, err
);
1696 case -NFS4ERR_BADSESSION
:
1697 case -NFS4ERR_BADSLOT
:
1698 case -NFS4ERR_BAD_HIGH_SLOT
:
1699 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
1700 case -NFS4ERR_DEADSESSION
:
1701 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1702 nfs4_schedule_session_recovery(server
->nfs_client
->cl_session
, err
);
1704 case -NFS4ERR_STALE_CLIENTID
:
1705 case -NFS4ERR_STALE_STATEID
:
1706 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1707 case -NFS4ERR_EXPIRED
:
1708 /* Don't recall a delegation if it was lost */
1709 nfs4_schedule_lease_recovery(server
->nfs_client
);
1711 case -NFS4ERR_MOVED
:
1712 nfs4_schedule_migration_recovery(server
);
1714 case -NFS4ERR_LEASE_MOVED
:
1715 nfs4_schedule_lease_moved_recovery(server
->nfs_client
);
1717 case -NFS4ERR_DELEG_REVOKED
:
1718 case -NFS4ERR_ADMIN_REVOKED
:
1719 case -NFS4ERR_BAD_STATEID
:
1720 case -NFS4ERR_OPENMODE
:
1721 nfs_inode_find_state_and_recover(state
->inode
,
1723 nfs4_schedule_stateid_recovery(server
, state
);
1725 case -NFS4ERR_DELAY
:
1726 case -NFS4ERR_GRACE
:
1727 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1731 case -NFS4ERR_DENIED
:
1732 /* kill_proc(fl->fl_pid, SIGLOST, 1); */
1738 int nfs4_open_delegation_recall(struct nfs_open_context
*ctx
, struct nfs4_state
*state
, const nfs4_stateid
*stateid
)
1740 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1741 struct nfs4_opendata
*opendata
;
1744 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
,
1745 NFS4_OPEN_CLAIM_DELEG_CUR_FH
);
1746 if (IS_ERR(opendata
))
1747 return PTR_ERR(opendata
);
1748 nfs4_stateid_copy(&opendata
->o_arg
.u
.delegation
, stateid
);
1749 err
= nfs4_open_recover(opendata
, state
);
1750 nfs4_opendata_put(opendata
);
1751 return nfs4_handle_delegation_recall_error(server
, state
, stateid
, err
);
1754 static void nfs4_open_confirm_prepare(struct rpc_task
*task
, void *calldata
)
1756 struct nfs4_opendata
*data
= calldata
;
1758 nfs40_setup_sequence(data
->o_arg
.server
->nfs_client
->cl_slot_tbl
,
1759 &data
->c_arg
.seq_args
, &data
->c_res
.seq_res
, task
);
1762 static void nfs4_open_confirm_done(struct rpc_task
*task
, void *calldata
)
1764 struct nfs4_opendata
*data
= calldata
;
1766 nfs40_sequence_done(task
, &data
->c_res
.seq_res
);
1768 data
->rpc_status
= task
->tk_status
;
1769 if (data
->rpc_status
== 0) {
1770 nfs4_stateid_copy(&data
->o_res
.stateid
, &data
->c_res
.stateid
);
1771 nfs_confirm_seqid(&data
->owner
->so_seqid
, 0);
1772 renew_lease(data
->o_res
.server
, data
->timestamp
);
1777 static void nfs4_open_confirm_release(void *calldata
)
1779 struct nfs4_opendata
*data
= calldata
;
1780 struct nfs4_state
*state
= NULL
;
1782 /* If this request hasn't been cancelled, do nothing */
1783 if (data
->cancelled
== 0)
1785 /* In case of error, no cleanup! */
1786 if (!data
->rpc_done
)
1788 state
= nfs4_opendata_to_nfs4_state(data
);
1790 nfs4_close_state(state
, data
->o_arg
.fmode
);
1792 nfs4_opendata_put(data
);
1795 static const struct rpc_call_ops nfs4_open_confirm_ops
= {
1796 .rpc_call_prepare
= nfs4_open_confirm_prepare
,
1797 .rpc_call_done
= nfs4_open_confirm_done
,
1798 .rpc_release
= nfs4_open_confirm_release
,
1802 * Note: On error, nfs4_proc_open_confirm will free the struct nfs4_opendata
1804 static int _nfs4_proc_open_confirm(struct nfs4_opendata
*data
)
1806 struct nfs_server
*server
= NFS_SERVER(d_inode(data
->dir
));
1807 struct rpc_task
*task
;
1808 struct rpc_message msg
= {
1809 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_CONFIRM
],
1810 .rpc_argp
= &data
->c_arg
,
1811 .rpc_resp
= &data
->c_res
,
1812 .rpc_cred
= data
->owner
->so_cred
,
1814 struct rpc_task_setup task_setup_data
= {
1815 .rpc_client
= server
->client
,
1816 .rpc_message
= &msg
,
1817 .callback_ops
= &nfs4_open_confirm_ops
,
1818 .callback_data
= data
,
1819 .workqueue
= nfsiod_workqueue
,
1820 .flags
= RPC_TASK_ASYNC
,
1824 nfs4_init_sequence(&data
->c_arg
.seq_args
, &data
->c_res
.seq_res
, 1);
1825 kref_get(&data
->kref
);
1827 data
->rpc_status
= 0;
1828 data
->timestamp
= jiffies
;
1829 task
= rpc_run_task(&task_setup_data
);
1831 return PTR_ERR(task
);
1832 status
= nfs4_wait_for_completion_rpc_task(task
);
1834 data
->cancelled
= 1;
1837 status
= data
->rpc_status
;
1842 static void nfs4_open_prepare(struct rpc_task
*task
, void *calldata
)
1844 struct nfs4_opendata
*data
= calldata
;
1845 struct nfs4_state_owner
*sp
= data
->owner
;
1846 struct nfs_client
*clp
= sp
->so_server
->nfs_client
;
1848 if (nfs_wait_on_sequence(data
->o_arg
.seqid
, task
) != 0)
1851 * Check if we still need to send an OPEN call, or if we can use
1852 * a delegation instead.
1854 if (data
->state
!= NULL
) {
1855 struct nfs_delegation
*delegation
;
1857 if (can_open_cached(data
->state
, data
->o_arg
.fmode
, data
->o_arg
.open_flags
))
1860 delegation
= rcu_dereference(NFS_I(data
->state
->inode
)->delegation
);
1861 if (data
->o_arg
.claim
!= NFS4_OPEN_CLAIM_DELEGATE_CUR
&&
1862 data
->o_arg
.claim
!= NFS4_OPEN_CLAIM_DELEG_CUR_FH
&&
1863 can_open_delegated(delegation
, data
->o_arg
.fmode
))
1864 goto unlock_no_action
;
1867 /* Update client id. */
1868 data
->o_arg
.clientid
= clp
->cl_clientid
;
1869 switch (data
->o_arg
.claim
) {
1870 case NFS4_OPEN_CLAIM_PREVIOUS
:
1871 case NFS4_OPEN_CLAIM_DELEG_CUR_FH
:
1872 case NFS4_OPEN_CLAIM_DELEG_PREV_FH
:
1873 data
->o_arg
.open_bitmap
= &nfs4_open_noattr_bitmap
[0];
1874 case NFS4_OPEN_CLAIM_FH
:
1875 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_NOATTR
];
1876 nfs_copy_fh(&data
->o_res
.fh
, data
->o_arg
.fh
);
1878 data
->timestamp
= jiffies
;
1879 if (nfs4_setup_sequence(data
->o_arg
.server
,
1880 &data
->o_arg
.seq_args
,
1881 &data
->o_res
.seq_res
,
1883 nfs_release_seqid(data
->o_arg
.seqid
);
1885 /* Set the create mode (note dependency on the session type) */
1886 data
->o_arg
.createmode
= NFS4_CREATE_UNCHECKED
;
1887 if (data
->o_arg
.open_flags
& O_EXCL
) {
1888 data
->o_arg
.createmode
= NFS4_CREATE_EXCLUSIVE
;
1889 if (nfs4_has_persistent_session(clp
))
1890 data
->o_arg
.createmode
= NFS4_CREATE_GUARDED
;
1891 else if (clp
->cl_mvops
->minor_version
> 0)
1892 data
->o_arg
.createmode
= NFS4_CREATE_EXCLUSIVE4_1
;
1898 task
->tk_action
= NULL
;
1900 nfs4_sequence_done(task
, &data
->o_res
.seq_res
);
1903 static void nfs4_open_done(struct rpc_task
*task
, void *calldata
)
1905 struct nfs4_opendata
*data
= calldata
;
1907 data
->rpc_status
= task
->tk_status
;
1909 if (!nfs4_sequence_done(task
, &data
->o_res
.seq_res
))
1912 if (task
->tk_status
== 0) {
1913 if (data
->o_res
.f_attr
->valid
& NFS_ATTR_FATTR_TYPE
) {
1914 switch (data
->o_res
.f_attr
->mode
& S_IFMT
) {
1918 data
->rpc_status
= -ELOOP
;
1921 data
->rpc_status
= -EISDIR
;
1924 data
->rpc_status
= -ENOTDIR
;
1927 renew_lease(data
->o_res
.server
, data
->timestamp
);
1928 if (!(data
->o_res
.rflags
& NFS4_OPEN_RESULT_CONFIRM
))
1929 nfs_confirm_seqid(&data
->owner
->so_seqid
, 0);
1934 static void nfs4_open_release(void *calldata
)
1936 struct nfs4_opendata
*data
= calldata
;
1937 struct nfs4_state
*state
= NULL
;
1939 /* If this request hasn't been cancelled, do nothing */
1940 if (data
->cancelled
== 0)
1942 /* In case of error, no cleanup! */
1943 if (data
->rpc_status
!= 0 || !data
->rpc_done
)
1945 /* In case we need an open_confirm, no cleanup! */
1946 if (data
->o_res
.rflags
& NFS4_OPEN_RESULT_CONFIRM
)
1948 state
= nfs4_opendata_to_nfs4_state(data
);
1950 nfs4_close_state(state
, data
->o_arg
.fmode
);
1952 nfs4_opendata_put(data
);
1955 static const struct rpc_call_ops nfs4_open_ops
= {
1956 .rpc_call_prepare
= nfs4_open_prepare
,
1957 .rpc_call_done
= nfs4_open_done
,
1958 .rpc_release
= nfs4_open_release
,
1961 static int nfs4_run_open_task(struct nfs4_opendata
*data
, int isrecover
)
1963 struct inode
*dir
= d_inode(data
->dir
);
1964 struct nfs_server
*server
= NFS_SERVER(dir
);
1965 struct nfs_openargs
*o_arg
= &data
->o_arg
;
1966 struct nfs_openres
*o_res
= &data
->o_res
;
1967 struct rpc_task
*task
;
1968 struct rpc_message msg
= {
1969 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN
],
1972 .rpc_cred
= data
->owner
->so_cred
,
1974 struct rpc_task_setup task_setup_data
= {
1975 .rpc_client
= server
->client
,
1976 .rpc_message
= &msg
,
1977 .callback_ops
= &nfs4_open_ops
,
1978 .callback_data
= data
,
1979 .workqueue
= nfsiod_workqueue
,
1980 .flags
= RPC_TASK_ASYNC
,
1984 nfs4_init_sequence(&o_arg
->seq_args
, &o_res
->seq_res
, 1);
1985 kref_get(&data
->kref
);
1987 data
->rpc_status
= 0;
1988 data
->cancelled
= 0;
1989 data
->is_recover
= 0;
1991 nfs4_set_sequence_privileged(&o_arg
->seq_args
);
1992 data
->is_recover
= 1;
1994 task
= rpc_run_task(&task_setup_data
);
1996 return PTR_ERR(task
);
1997 status
= nfs4_wait_for_completion_rpc_task(task
);
1999 data
->cancelled
= 1;
2002 status
= data
->rpc_status
;
2008 static int _nfs4_recover_proc_open(struct nfs4_opendata
*data
)
2010 struct inode
*dir
= d_inode(data
->dir
);
2011 struct nfs_openres
*o_res
= &data
->o_res
;
2014 status
= nfs4_run_open_task(data
, 1);
2015 if (status
!= 0 || !data
->rpc_done
)
2018 nfs_fattr_map_and_free_names(NFS_SERVER(dir
), &data
->f_attr
);
2020 if (o_res
->rflags
& NFS4_OPEN_RESULT_CONFIRM
) {
2021 status
= _nfs4_proc_open_confirm(data
);
2030 * Additional permission checks in order to distinguish between an
2031 * open for read, and an open for execute. This works around the
2032 * fact that NFSv4 OPEN treats read and execute permissions as being
2034 * Note that in the non-execute case, we want to turn off permission
2035 * checking if we just created a new file (POSIX open() semantics).
2037 static int nfs4_opendata_access(struct rpc_cred
*cred
,
2038 struct nfs4_opendata
*opendata
,
2039 struct nfs4_state
*state
, fmode_t fmode
,
2042 struct nfs_access_entry cache
;
2045 /* access call failed or for some reason the server doesn't
2046 * support any access modes -- defer access call until later */
2047 if (opendata
->o_res
.access_supported
== 0)
2052 * Use openflags to check for exec, because fmode won't
2053 * always have FMODE_EXEC set when file open for exec.
2055 if (openflags
& __FMODE_EXEC
) {
2056 /* ONLY check for exec rights */
2058 } else if ((fmode
& FMODE_READ
) && !opendata
->file_created
)
2062 cache
.jiffies
= jiffies
;
2063 nfs_access_set_mask(&cache
, opendata
->o_res
.access_result
);
2064 nfs_access_add_cache(state
->inode
, &cache
);
2066 if ((mask
& ~cache
.mask
& (MAY_READ
| MAY_EXEC
)) == 0)
2069 /* even though OPEN succeeded, access is denied. Close the file */
2070 nfs4_close_state(state
, fmode
);
2075 * Note: On error, nfs4_proc_open will free the struct nfs4_opendata
2077 static int _nfs4_proc_open(struct nfs4_opendata
*data
)
2079 struct inode
*dir
= d_inode(data
->dir
);
2080 struct nfs_server
*server
= NFS_SERVER(dir
);
2081 struct nfs_openargs
*o_arg
= &data
->o_arg
;
2082 struct nfs_openres
*o_res
= &data
->o_res
;
2085 status
= nfs4_run_open_task(data
, 0);
2086 if (!data
->rpc_done
)
2089 if (status
== -NFS4ERR_BADNAME
&&
2090 !(o_arg
->open_flags
& O_CREAT
))
2095 nfs_fattr_map_and_free_names(server
, &data
->f_attr
);
2097 if (o_arg
->open_flags
& O_CREAT
) {
2098 update_changeattr(dir
, &o_res
->cinfo
);
2099 if (o_arg
->open_flags
& O_EXCL
)
2100 data
->file_created
= 1;
2101 else if (o_res
->cinfo
.before
!= o_res
->cinfo
.after
)
2102 data
->file_created
= 1;
2104 if ((o_res
->rflags
& NFS4_OPEN_RESULT_LOCKTYPE_POSIX
) == 0)
2105 server
->caps
&= ~NFS_CAP_POSIX_LOCK
;
2106 if(o_res
->rflags
& NFS4_OPEN_RESULT_CONFIRM
) {
2107 status
= _nfs4_proc_open_confirm(data
);
2111 if (!(o_res
->f_attr
->valid
& NFS_ATTR_FATTR
))
2112 nfs4_proc_getattr(server
, &o_res
->fh
, o_res
->f_attr
, o_res
->f_label
);
2116 static int nfs4_recover_expired_lease(struct nfs_server
*server
)
2118 return nfs4_client_recover_expired_lease(server
->nfs_client
);
2123 * reclaim state on the server after a network partition.
2124 * Assumes caller holds the appropriate lock
2126 static int _nfs4_open_expired(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
2128 struct nfs4_opendata
*opendata
;
2131 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
,
2132 NFS4_OPEN_CLAIM_FH
);
2133 if (IS_ERR(opendata
))
2134 return PTR_ERR(opendata
);
2135 ret
= nfs4_open_recover(opendata
, state
);
2137 d_drop(ctx
->dentry
);
2138 nfs4_opendata_put(opendata
);
2142 static int nfs4_do_open_expired(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
2144 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
2145 struct nfs4_exception exception
= { };
2149 err
= _nfs4_open_expired(ctx
, state
);
2150 trace_nfs4_open_expired(ctx
, 0, err
);
2151 if (nfs4_clear_cap_atomic_open_v1(server
, err
, &exception
))
2156 case -NFS4ERR_GRACE
:
2157 case -NFS4ERR_DELAY
:
2158 nfs4_handle_exception(server
, err
, &exception
);
2161 } while (exception
.retry
);
2166 static int nfs4_open_expired(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
2168 struct nfs_open_context
*ctx
;
2171 ctx
= nfs4_state_find_open_context(state
);
2174 ret
= nfs4_do_open_expired(ctx
, state
);
2175 put_nfs_open_context(ctx
);
2179 static void nfs_finish_clear_delegation_stateid(struct nfs4_state
*state
)
2181 nfs_remove_bad_delegation(state
->inode
);
2182 write_seqlock(&state
->seqlock
);
2183 nfs4_stateid_copy(&state
->stateid
, &state
->open_stateid
);
2184 write_sequnlock(&state
->seqlock
);
2185 clear_bit(NFS_DELEGATED_STATE
, &state
->flags
);
2188 static void nfs40_clear_delegation_stateid(struct nfs4_state
*state
)
2190 if (rcu_access_pointer(NFS_I(state
->inode
)->delegation
) != NULL
)
2191 nfs_finish_clear_delegation_stateid(state
);
2194 static int nfs40_open_expired(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
2196 /* NFSv4.0 doesn't allow for delegation recovery on open expire */
2197 nfs40_clear_delegation_stateid(state
);
2198 return nfs4_open_expired(sp
, state
);
2201 #if defined(CONFIG_NFS_V4_1)
2202 static void nfs41_check_delegation_stateid(struct nfs4_state
*state
)
2204 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
2205 nfs4_stateid stateid
;
2206 struct nfs_delegation
*delegation
;
2207 struct rpc_cred
*cred
;
2210 /* Get the delegation credential for use by test/free_stateid */
2212 delegation
= rcu_dereference(NFS_I(state
->inode
)->delegation
);
2213 if (delegation
== NULL
) {
2218 nfs4_stateid_copy(&stateid
, &delegation
->stateid
);
2219 cred
= get_rpccred(delegation
->cred
);
2221 status
= nfs41_test_stateid(server
, &stateid
, cred
);
2222 trace_nfs4_test_delegation_stateid(state
, NULL
, status
);
2224 if (status
!= NFS_OK
) {
2225 /* Free the stateid unless the server explicitly
2226 * informs us the stateid is unrecognized. */
2227 if (status
!= -NFS4ERR_BAD_STATEID
)
2228 nfs41_free_stateid(server
, &stateid
, cred
);
2229 nfs_finish_clear_delegation_stateid(state
);
2236 * nfs41_check_open_stateid - possibly free an open stateid
2238 * @state: NFSv4 state for an inode
2240 * Returns NFS_OK if recovery for this stateid is now finished.
2241 * Otherwise a negative NFS4ERR value is returned.
2243 static int nfs41_check_open_stateid(struct nfs4_state
*state
)
2245 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
2246 nfs4_stateid
*stateid
= &state
->open_stateid
;
2247 struct rpc_cred
*cred
= state
->owner
->so_cred
;
2250 /* If a state reset has been done, test_stateid is unneeded */
2251 if ((test_bit(NFS_O_RDONLY_STATE
, &state
->flags
) == 0) &&
2252 (test_bit(NFS_O_WRONLY_STATE
, &state
->flags
) == 0) &&
2253 (test_bit(NFS_O_RDWR_STATE
, &state
->flags
) == 0))
2254 return -NFS4ERR_BAD_STATEID
;
2256 status
= nfs41_test_stateid(server
, stateid
, cred
);
2257 trace_nfs4_test_open_stateid(state
, NULL
, status
);
2258 if (status
!= NFS_OK
) {
2259 /* Free the stateid unless the server explicitly
2260 * informs us the stateid is unrecognized. */
2261 if (status
!= -NFS4ERR_BAD_STATEID
)
2262 nfs41_free_stateid(server
, stateid
, cred
);
2264 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
2265 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
2266 clear_bit(NFS_O_RDWR_STATE
, &state
->flags
);
2267 clear_bit(NFS_OPEN_STATE
, &state
->flags
);
2272 static int nfs41_open_expired(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
2276 nfs41_check_delegation_stateid(state
);
2277 status
= nfs41_check_open_stateid(state
);
2278 if (status
!= NFS_OK
)
2279 status
= nfs4_open_expired(sp
, state
);
2285 * on an EXCLUSIVE create, the server should send back a bitmask with FATTR4-*
2286 * fields corresponding to attributes that were used to store the verifier.
2287 * Make sure we clobber those fields in the later setattr call
2289 static inline void nfs4_exclusive_attrset(struct nfs4_opendata
*opendata
, struct iattr
*sattr
)
2291 if ((opendata
->o_res
.attrset
[1] & FATTR4_WORD1_TIME_ACCESS
) &&
2292 !(sattr
->ia_valid
& ATTR_ATIME_SET
))
2293 sattr
->ia_valid
|= ATTR_ATIME
;
2295 if ((opendata
->o_res
.attrset
[1] & FATTR4_WORD1_TIME_MODIFY
) &&
2296 !(sattr
->ia_valid
& ATTR_MTIME_SET
))
2297 sattr
->ia_valid
|= ATTR_MTIME
;
2300 static int _nfs4_open_and_get_state(struct nfs4_opendata
*opendata
,
2303 struct nfs_open_context
*ctx
)
2305 struct nfs4_state_owner
*sp
= opendata
->owner
;
2306 struct nfs_server
*server
= sp
->so_server
;
2307 struct dentry
*dentry
;
2308 struct nfs4_state
*state
;
2312 seq
= raw_seqcount_begin(&sp
->so_reclaim_seqcount
);
2314 ret
= _nfs4_proc_open(opendata
);
2318 state
= nfs4_opendata_to_nfs4_state(opendata
);
2319 ret
= PTR_ERR(state
);
2322 if (server
->caps
& NFS_CAP_POSIX_LOCK
)
2323 set_bit(NFS_STATE_POSIX_LOCKS
, &state
->flags
);
2325 dentry
= opendata
->dentry
;
2326 if (d_really_is_negative(dentry
)) {
2327 /* FIXME: Is this d_drop() ever needed? */
2329 dentry
= d_add_unique(dentry
, igrab(state
->inode
));
2330 if (dentry
== NULL
) {
2331 dentry
= opendata
->dentry
;
2332 } else if (dentry
!= ctx
->dentry
) {
2334 ctx
->dentry
= dget(dentry
);
2336 nfs_set_verifier(dentry
,
2337 nfs_save_change_attribute(d_inode(opendata
->dir
)));
2340 ret
= nfs4_opendata_access(sp
->so_cred
, opendata
, state
, fmode
, flags
);
2345 if (d_inode(dentry
) == state
->inode
) {
2346 nfs_inode_attach_open_context(ctx
);
2347 if (read_seqcount_retry(&sp
->so_reclaim_seqcount
, seq
))
2348 nfs4_schedule_stateid_recovery(server
, state
);
2355 * Returns a referenced nfs4_state
2357 static int _nfs4_do_open(struct inode
*dir
,
2358 struct nfs_open_context
*ctx
,
2360 struct iattr
*sattr
,
2361 struct nfs4_label
*label
,
2364 struct nfs4_state_owner
*sp
;
2365 struct nfs4_state
*state
= NULL
;
2366 struct nfs_server
*server
= NFS_SERVER(dir
);
2367 struct nfs4_opendata
*opendata
;
2368 struct dentry
*dentry
= ctx
->dentry
;
2369 struct rpc_cred
*cred
= ctx
->cred
;
2370 struct nfs4_threshold
**ctx_th
= &ctx
->mdsthreshold
;
2371 fmode_t fmode
= ctx
->mode
& (FMODE_READ
|FMODE_WRITE
|FMODE_EXEC
);
2372 enum open_claim_type4 claim
= NFS4_OPEN_CLAIM_NULL
;
2373 struct nfs4_label
*olabel
= NULL
;
2376 /* Protect against reboot recovery conflicts */
2378 sp
= nfs4_get_state_owner(server
, cred
, GFP_KERNEL
);
2380 dprintk("nfs4_do_open: nfs4_get_state_owner failed!\n");
2383 status
= nfs4_recover_expired_lease(server
);
2385 goto err_put_state_owner
;
2386 if (d_really_is_positive(dentry
))
2387 nfs4_return_incompatible_delegation(d_inode(dentry
), fmode
);
2389 if (d_really_is_positive(dentry
))
2390 claim
= NFS4_OPEN_CLAIM_FH
;
2391 opendata
= nfs4_opendata_alloc(dentry
, sp
, fmode
, flags
, sattr
,
2392 label
, claim
, GFP_KERNEL
);
2393 if (opendata
== NULL
)
2394 goto err_put_state_owner
;
2397 olabel
= nfs4_label_alloc(server
, GFP_KERNEL
);
2398 if (IS_ERR(olabel
)) {
2399 status
= PTR_ERR(olabel
);
2400 goto err_opendata_put
;
2404 if (server
->attr_bitmask
[2] & FATTR4_WORD2_MDSTHRESHOLD
) {
2405 if (!opendata
->f_attr
.mdsthreshold
) {
2406 opendata
->f_attr
.mdsthreshold
= pnfs_mdsthreshold_alloc();
2407 if (!opendata
->f_attr
.mdsthreshold
)
2408 goto err_free_label
;
2410 opendata
->o_arg
.open_bitmap
= &nfs4_pnfs_open_bitmap
[0];
2412 if (d_really_is_positive(dentry
))
2413 opendata
->state
= nfs4_get_open_state(d_inode(dentry
), sp
);
2415 status
= _nfs4_open_and_get_state(opendata
, fmode
, flags
, ctx
);
2417 goto err_free_label
;
2420 if ((opendata
->o_arg
.open_flags
& O_EXCL
) &&
2421 (opendata
->o_arg
.createmode
!= NFS4_CREATE_GUARDED
)) {
2422 nfs4_exclusive_attrset(opendata
, sattr
);
2424 nfs_fattr_init(opendata
->o_res
.f_attr
);
2425 status
= nfs4_do_setattr(state
->inode
, cred
,
2426 opendata
->o_res
.f_attr
, sattr
,
2427 state
, label
, olabel
);
2429 nfs_setattr_update_inode(state
->inode
, sattr
,
2430 opendata
->o_res
.f_attr
);
2431 nfs_setsecurity(state
->inode
, opendata
->o_res
.f_attr
, olabel
);
2434 if (opendata
->file_created
)
2435 *opened
|= FILE_CREATED
;
2437 if (pnfs_use_threshold(ctx_th
, opendata
->f_attr
.mdsthreshold
, server
)) {
2438 *ctx_th
= opendata
->f_attr
.mdsthreshold
;
2439 opendata
->f_attr
.mdsthreshold
= NULL
;
2442 nfs4_label_free(olabel
);
2444 nfs4_opendata_put(opendata
);
2445 nfs4_put_state_owner(sp
);
2448 nfs4_label_free(olabel
);
2450 nfs4_opendata_put(opendata
);
2451 err_put_state_owner
:
2452 nfs4_put_state_owner(sp
);
2458 static struct nfs4_state
*nfs4_do_open(struct inode
*dir
,
2459 struct nfs_open_context
*ctx
,
2461 struct iattr
*sattr
,
2462 struct nfs4_label
*label
,
2465 struct nfs_server
*server
= NFS_SERVER(dir
);
2466 struct nfs4_exception exception
= { };
2467 struct nfs4_state
*res
;
2471 status
= _nfs4_do_open(dir
, ctx
, flags
, sattr
, label
, opened
);
2473 trace_nfs4_open_file(ctx
, flags
, status
);
2476 /* NOTE: BAD_SEQID means the server and client disagree about the
2477 * book-keeping w.r.t. state-changing operations
2478 * (OPEN/CLOSE/LOCK/LOCKU...)
2479 * It is actually a sign of a bug on the client or on the server.
2481 * If we receive a BAD_SEQID error in the particular case of
2482 * doing an OPEN, we assume that nfs_increment_open_seqid() will
2483 * have unhashed the old state_owner for us, and that we can
2484 * therefore safely retry using a new one. We should still warn
2485 * the user though...
2487 if (status
== -NFS4ERR_BAD_SEQID
) {
2488 pr_warn_ratelimited("NFS: v4 server %s "
2489 " returned a bad sequence-id error!\n",
2490 NFS_SERVER(dir
)->nfs_client
->cl_hostname
);
2491 exception
.retry
= 1;
2495 * BAD_STATEID on OPEN means that the server cancelled our
2496 * state before it received the OPEN_CONFIRM.
2497 * Recover by retrying the request as per the discussion
2498 * on Page 181 of RFC3530.
2500 if (status
== -NFS4ERR_BAD_STATEID
) {
2501 exception
.retry
= 1;
2504 if (status
== -EAGAIN
) {
2505 /* We must have found a delegation */
2506 exception
.retry
= 1;
2509 if (nfs4_clear_cap_atomic_open_v1(server
, status
, &exception
))
2511 res
= ERR_PTR(nfs4_handle_exception(server
,
2512 status
, &exception
));
2513 } while (exception
.retry
);
2517 static int _nfs4_do_setattr(struct inode
*inode
, struct rpc_cred
*cred
,
2518 struct nfs_fattr
*fattr
, struct iattr
*sattr
,
2519 struct nfs4_state
*state
, struct nfs4_label
*ilabel
,
2520 struct nfs4_label
*olabel
)
2522 struct nfs_server
*server
= NFS_SERVER(inode
);
2523 struct nfs_setattrargs arg
= {
2524 .fh
= NFS_FH(inode
),
2527 .bitmask
= server
->attr_bitmask
,
2530 struct nfs_setattrres res
= {
2535 struct rpc_message msg
= {
2536 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETATTR
],
2541 unsigned long timestamp
= jiffies
;
2546 arg
.bitmask
= nfs4_bitmask(server
, ilabel
);
2548 arg
.bitmask
= nfs4_bitmask(server
, olabel
);
2550 nfs_fattr_init(fattr
);
2552 /* Servers should only apply open mode checks for file size changes */
2553 truncate
= (sattr
->ia_valid
& ATTR_SIZE
) ? true : false;
2554 fmode
= truncate
? FMODE_WRITE
: FMODE_READ
;
2556 if (nfs4_copy_delegation_stateid(&arg
.stateid
, inode
, fmode
)) {
2557 /* Use that stateid */
2558 } else if (truncate
&& state
!= NULL
) {
2559 struct nfs_lockowner lockowner
= {
2560 .l_owner
= current
->files
,
2561 .l_pid
= current
->tgid
,
2563 if (!nfs4_valid_open_stateid(state
))
2565 if (nfs4_select_rw_stateid(&arg
.stateid
, state
, FMODE_WRITE
,
2566 &lockowner
) == -EIO
)
2569 nfs4_stateid_copy(&arg
.stateid
, &zero_stateid
);
2571 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
2572 if (status
== 0 && state
!= NULL
)
2573 renew_lease(server
, timestamp
);
2577 static int nfs4_do_setattr(struct inode
*inode
, struct rpc_cred
*cred
,
2578 struct nfs_fattr
*fattr
, struct iattr
*sattr
,
2579 struct nfs4_state
*state
, struct nfs4_label
*ilabel
,
2580 struct nfs4_label
*olabel
)
2582 struct nfs_server
*server
= NFS_SERVER(inode
);
2583 struct nfs4_exception exception
= {
2589 err
= _nfs4_do_setattr(inode
, cred
, fattr
, sattr
, state
, ilabel
, olabel
);
2590 trace_nfs4_setattr(inode
, err
);
2592 case -NFS4ERR_OPENMODE
:
2593 if (!(sattr
->ia_valid
& ATTR_SIZE
)) {
2594 pr_warn_once("NFSv4: server %s is incorrectly "
2595 "applying open mode checks to "
2596 "a SETATTR that is not "
2597 "changing file size.\n",
2598 server
->nfs_client
->cl_hostname
);
2600 if (state
&& !(state
->state
& FMODE_WRITE
)) {
2602 if (sattr
->ia_valid
& ATTR_OPEN
)
2607 err
= nfs4_handle_exception(server
, err
, &exception
);
2608 } while (exception
.retry
);
2613 struct nfs4_closedata
{
2614 struct inode
*inode
;
2615 struct nfs4_state
*state
;
2616 struct nfs_closeargs arg
;
2617 struct nfs_closeres res
;
2618 struct nfs_fattr fattr
;
2619 unsigned long timestamp
;
2624 static void nfs4_free_closedata(void *data
)
2626 struct nfs4_closedata
*calldata
= data
;
2627 struct nfs4_state_owner
*sp
= calldata
->state
->owner
;
2628 struct super_block
*sb
= calldata
->state
->inode
->i_sb
;
2631 pnfs_roc_release(calldata
->state
->inode
);
2632 nfs4_put_open_state(calldata
->state
);
2633 nfs_free_seqid(calldata
->arg
.seqid
);
2634 nfs4_put_state_owner(sp
);
2635 nfs_sb_deactive(sb
);
2639 static void nfs4_close_done(struct rpc_task
*task
, void *data
)
2641 struct nfs4_closedata
*calldata
= data
;
2642 struct nfs4_state
*state
= calldata
->state
;
2643 struct nfs_server
*server
= NFS_SERVER(calldata
->inode
);
2644 nfs4_stateid
*res_stateid
= NULL
;
2646 dprintk("%s: begin!\n", __func__
);
2647 if (!nfs4_sequence_done(task
, &calldata
->res
.seq_res
))
2649 trace_nfs4_close(state
, &calldata
->arg
, &calldata
->res
, task
->tk_status
);
2650 /* hmm. we are done with the inode, and in the process of freeing
2651 * the state_owner. we keep this around to process errors
2653 switch (task
->tk_status
) {
2655 res_stateid
= &calldata
->res
.stateid
;
2656 if (calldata
->arg
.fmode
== 0 && calldata
->roc
)
2657 pnfs_roc_set_barrier(state
->inode
,
2658 calldata
->roc_barrier
);
2659 renew_lease(server
, calldata
->timestamp
);
2661 case -NFS4ERR_ADMIN_REVOKED
:
2662 case -NFS4ERR_STALE_STATEID
:
2663 case -NFS4ERR_OLD_STATEID
:
2664 case -NFS4ERR_BAD_STATEID
:
2665 case -NFS4ERR_EXPIRED
:
2666 if (!nfs4_stateid_match(&calldata
->arg
.stateid
,
2667 &state
->open_stateid
)) {
2668 rpc_restart_call_prepare(task
);
2671 if (calldata
->arg
.fmode
== 0)
2674 if (nfs4_async_handle_error(task
, server
, state
, NULL
) == -EAGAIN
) {
2675 rpc_restart_call_prepare(task
);
2679 nfs_clear_open_stateid(state
, res_stateid
, calldata
->arg
.fmode
);
2681 nfs_release_seqid(calldata
->arg
.seqid
);
2682 nfs_refresh_inode(calldata
->inode
, calldata
->res
.fattr
);
2683 dprintk("%s: done, ret = %d!\n", __func__
, task
->tk_status
);
2686 static void nfs4_close_prepare(struct rpc_task
*task
, void *data
)
2688 struct nfs4_closedata
*calldata
= data
;
2689 struct nfs4_state
*state
= calldata
->state
;
2690 struct inode
*inode
= calldata
->inode
;
2691 bool is_rdonly
, is_wronly
, is_rdwr
;
2694 dprintk("%s: begin!\n", __func__
);
2695 if (nfs_wait_on_sequence(calldata
->arg
.seqid
, task
) != 0)
2698 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_DOWNGRADE
];
2699 spin_lock(&state
->owner
->so_lock
);
2700 is_rdwr
= test_bit(NFS_O_RDWR_STATE
, &state
->flags
);
2701 is_rdonly
= test_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
2702 is_wronly
= test_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
2703 nfs4_stateid_copy(&calldata
->arg
.stateid
, &state
->open_stateid
);
2704 /* Calculate the change in open mode */
2705 calldata
->arg
.fmode
= 0;
2706 if (state
->n_rdwr
== 0) {
2707 if (state
->n_rdonly
== 0)
2708 call_close
|= is_rdonly
;
2710 calldata
->arg
.fmode
|= FMODE_READ
;
2711 if (state
->n_wronly
== 0)
2712 call_close
|= is_wronly
;
2714 calldata
->arg
.fmode
|= FMODE_WRITE
;
2716 calldata
->arg
.fmode
|= FMODE_READ
|FMODE_WRITE
;
2718 if (calldata
->arg
.fmode
== 0)
2719 call_close
|= is_rdwr
;
2721 if (!nfs4_valid_open_stateid(state
))
2723 spin_unlock(&state
->owner
->so_lock
);
2726 /* Note: exit _without_ calling nfs4_close_done */
2730 if (calldata
->arg
.fmode
== 0) {
2731 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CLOSE
];
2732 if (calldata
->roc
&&
2733 pnfs_roc_drain(inode
, &calldata
->roc_barrier
, task
)) {
2734 nfs_release_seqid(calldata
->arg
.seqid
);
2738 calldata
->arg
.share_access
=
2739 nfs4_map_atomic_open_share(NFS_SERVER(inode
),
2740 calldata
->arg
.fmode
, 0);
2742 nfs_fattr_init(calldata
->res
.fattr
);
2743 calldata
->timestamp
= jiffies
;
2744 if (nfs4_setup_sequence(NFS_SERVER(inode
),
2745 &calldata
->arg
.seq_args
,
2746 &calldata
->res
.seq_res
,
2748 nfs_release_seqid(calldata
->arg
.seqid
);
2749 dprintk("%s: done!\n", __func__
);
2752 task
->tk_action
= NULL
;
2754 nfs4_sequence_done(task
, &calldata
->res
.seq_res
);
2757 static const struct rpc_call_ops nfs4_close_ops
= {
2758 .rpc_call_prepare
= nfs4_close_prepare
,
2759 .rpc_call_done
= nfs4_close_done
,
2760 .rpc_release
= nfs4_free_closedata
,
2763 static bool nfs4_roc(struct inode
*inode
)
2765 if (!nfs_have_layout(inode
))
2767 return pnfs_roc(inode
);
2771 * It is possible for data to be read/written from a mem-mapped file
2772 * after the sys_close call (which hits the vfs layer as a flush).
2773 * This means that we can't safely call nfsv4 close on a file until
2774 * the inode is cleared. This in turn means that we are not good
2775 * NFSv4 citizens - we do not indicate to the server to update the file's
2776 * share state even when we are done with one of the three share
2777 * stateid's in the inode.
2779 * NOTE: Caller must be holding the sp->so_owner semaphore!
2781 int nfs4_do_close(struct nfs4_state
*state
, gfp_t gfp_mask
, int wait
)
2783 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
2784 struct nfs_seqid
*(*alloc_seqid
)(struct nfs_seqid_counter
*, gfp_t
);
2785 struct nfs4_closedata
*calldata
;
2786 struct nfs4_state_owner
*sp
= state
->owner
;
2787 struct rpc_task
*task
;
2788 struct rpc_message msg
= {
2789 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CLOSE
],
2790 .rpc_cred
= state
->owner
->so_cred
,
2792 struct rpc_task_setup task_setup_data
= {
2793 .rpc_client
= server
->client
,
2794 .rpc_message
= &msg
,
2795 .callback_ops
= &nfs4_close_ops
,
2796 .workqueue
= nfsiod_workqueue
,
2797 .flags
= RPC_TASK_ASYNC
,
2799 int status
= -ENOMEM
;
2801 nfs4_state_protect(server
->nfs_client
, NFS_SP4_MACH_CRED_CLEANUP
,
2802 &task_setup_data
.rpc_client
, &msg
);
2804 calldata
= kzalloc(sizeof(*calldata
), gfp_mask
);
2805 if (calldata
== NULL
)
2807 nfs4_init_sequence(&calldata
->arg
.seq_args
, &calldata
->res
.seq_res
, 1);
2808 calldata
->inode
= state
->inode
;
2809 calldata
->state
= state
;
2810 calldata
->arg
.fh
= NFS_FH(state
->inode
);
2811 /* Serialization for the sequence id */
2812 alloc_seqid
= server
->nfs_client
->cl_mvops
->alloc_seqid
;
2813 calldata
->arg
.seqid
= alloc_seqid(&state
->owner
->so_seqid
, gfp_mask
);
2814 if (IS_ERR(calldata
->arg
.seqid
))
2815 goto out_free_calldata
;
2816 calldata
->arg
.fmode
= 0;
2817 calldata
->arg
.bitmask
= server
->cache_consistency_bitmask
;
2818 calldata
->res
.fattr
= &calldata
->fattr
;
2819 calldata
->res
.seqid
= calldata
->arg
.seqid
;
2820 calldata
->res
.server
= server
;
2821 calldata
->roc
= nfs4_roc(state
->inode
);
2822 nfs_sb_active(calldata
->inode
->i_sb
);
2824 msg
.rpc_argp
= &calldata
->arg
;
2825 msg
.rpc_resp
= &calldata
->res
;
2826 task_setup_data
.callback_data
= calldata
;
2827 task
= rpc_run_task(&task_setup_data
);
2829 return PTR_ERR(task
);
2832 status
= rpc_wait_for_completion_task(task
);
2838 nfs4_put_open_state(state
);
2839 nfs4_put_state_owner(sp
);
2843 static struct inode
*
2844 nfs4_atomic_open(struct inode
*dir
, struct nfs_open_context
*ctx
,
2845 int open_flags
, struct iattr
*attr
, int *opened
)
2847 struct nfs4_state
*state
;
2848 struct nfs4_label l
= {0, 0, 0, NULL
}, *label
= NULL
;
2850 label
= nfs4_label_init_security(dir
, ctx
->dentry
, attr
, &l
);
2852 /* Protect against concurrent sillydeletes */
2853 state
= nfs4_do_open(dir
, ctx
, open_flags
, attr
, label
, opened
);
2855 nfs4_label_release_security(label
);
2858 return ERR_CAST(state
);
2859 return state
->inode
;
2862 static void nfs4_close_context(struct nfs_open_context
*ctx
, int is_sync
)
2864 if (ctx
->state
== NULL
)
2867 nfs4_close_sync(ctx
->state
, ctx
->mode
);
2869 nfs4_close_state(ctx
->state
, ctx
->mode
);
2872 #define FATTR4_WORD1_NFS40_MASK (2*FATTR4_WORD1_MOUNTED_ON_FILEID - 1UL)
2873 #define FATTR4_WORD2_NFS41_MASK (2*FATTR4_WORD2_SUPPATTR_EXCLCREAT - 1UL)
2874 #define FATTR4_WORD2_NFS42_MASK (2*FATTR4_WORD2_SECURITY_LABEL - 1UL)
2876 static int _nfs4_server_capabilities(struct nfs_server
*server
, struct nfs_fh
*fhandle
)
2878 struct nfs4_server_caps_arg args
= {
2881 struct nfs4_server_caps_res res
= {};
2882 struct rpc_message msg
= {
2883 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SERVER_CAPS
],
2889 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2891 /* Sanity check the server answers */
2892 switch (server
->nfs_client
->cl_minorversion
) {
2894 res
.attr_bitmask
[1] &= FATTR4_WORD1_NFS40_MASK
;
2895 res
.attr_bitmask
[2] = 0;
2898 res
.attr_bitmask
[2] &= FATTR4_WORD2_NFS41_MASK
;
2901 res
.attr_bitmask
[2] &= FATTR4_WORD2_NFS42_MASK
;
2903 memcpy(server
->attr_bitmask
, res
.attr_bitmask
, sizeof(server
->attr_bitmask
));
2904 server
->caps
&= ~(NFS_CAP_ACLS
|NFS_CAP_HARDLINKS
|
2905 NFS_CAP_SYMLINKS
|NFS_CAP_FILEID
|
2906 NFS_CAP_MODE
|NFS_CAP_NLINK
|NFS_CAP_OWNER
|
2907 NFS_CAP_OWNER_GROUP
|NFS_CAP_ATIME
|
2908 NFS_CAP_CTIME
|NFS_CAP_MTIME
|
2909 NFS_CAP_SECURITY_LABEL
);
2910 if (res
.attr_bitmask
[0] & FATTR4_WORD0_ACL
&&
2911 res
.acl_bitmask
& ACL4_SUPPORT_ALLOW_ACL
)
2912 server
->caps
|= NFS_CAP_ACLS
;
2913 if (res
.has_links
!= 0)
2914 server
->caps
|= NFS_CAP_HARDLINKS
;
2915 if (res
.has_symlinks
!= 0)
2916 server
->caps
|= NFS_CAP_SYMLINKS
;
2917 if (res
.attr_bitmask
[0] & FATTR4_WORD0_FILEID
)
2918 server
->caps
|= NFS_CAP_FILEID
;
2919 if (res
.attr_bitmask
[1] & FATTR4_WORD1_MODE
)
2920 server
->caps
|= NFS_CAP_MODE
;
2921 if (res
.attr_bitmask
[1] & FATTR4_WORD1_NUMLINKS
)
2922 server
->caps
|= NFS_CAP_NLINK
;
2923 if (res
.attr_bitmask
[1] & FATTR4_WORD1_OWNER
)
2924 server
->caps
|= NFS_CAP_OWNER
;
2925 if (res
.attr_bitmask
[1] & FATTR4_WORD1_OWNER_GROUP
)
2926 server
->caps
|= NFS_CAP_OWNER_GROUP
;
2927 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_ACCESS
)
2928 server
->caps
|= NFS_CAP_ATIME
;
2929 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_METADATA
)
2930 server
->caps
|= NFS_CAP_CTIME
;
2931 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_MODIFY
)
2932 server
->caps
|= NFS_CAP_MTIME
;
2933 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
2934 if (res
.attr_bitmask
[2] & FATTR4_WORD2_SECURITY_LABEL
)
2935 server
->caps
|= NFS_CAP_SECURITY_LABEL
;
2937 memcpy(server
->attr_bitmask_nl
, res
.attr_bitmask
,
2938 sizeof(server
->attr_bitmask
));
2939 server
->attr_bitmask_nl
[2] &= ~FATTR4_WORD2_SECURITY_LABEL
;
2941 memcpy(server
->cache_consistency_bitmask
, res
.attr_bitmask
, sizeof(server
->cache_consistency_bitmask
));
2942 server
->cache_consistency_bitmask
[0] &= FATTR4_WORD0_CHANGE
|FATTR4_WORD0_SIZE
;
2943 server
->cache_consistency_bitmask
[1] &= FATTR4_WORD1_TIME_METADATA
|FATTR4_WORD1_TIME_MODIFY
;
2944 server
->cache_consistency_bitmask
[2] = 0;
2945 server
->acl_bitmask
= res
.acl_bitmask
;
2946 server
->fh_expire_type
= res
.fh_expire_type
;
2952 int nfs4_server_capabilities(struct nfs_server
*server
, struct nfs_fh
*fhandle
)
2954 struct nfs4_exception exception
= { };
2957 err
= nfs4_handle_exception(server
,
2958 _nfs4_server_capabilities(server
, fhandle
),
2960 } while (exception
.retry
);
2964 static int _nfs4_lookup_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2965 struct nfs_fsinfo
*info
)
2968 struct nfs4_lookup_root_arg args
= {
2971 struct nfs4_lookup_res res
= {
2973 .fattr
= info
->fattr
,
2976 struct rpc_message msg
= {
2977 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOOKUP_ROOT
],
2982 bitmask
[0] = nfs4_fattr_bitmap
[0];
2983 bitmask
[1] = nfs4_fattr_bitmap
[1];
2985 * Process the label in the upcoming getfattr
2987 bitmask
[2] = nfs4_fattr_bitmap
[2] & ~FATTR4_WORD2_SECURITY_LABEL
;
2989 nfs_fattr_init(info
->fattr
);
2990 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2993 static int nfs4_lookup_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2994 struct nfs_fsinfo
*info
)
2996 struct nfs4_exception exception
= { };
2999 err
= _nfs4_lookup_root(server
, fhandle
, info
);
3000 trace_nfs4_lookup_root(server
, fhandle
, info
->fattr
, err
);
3003 case -NFS4ERR_WRONGSEC
:
3006 err
= nfs4_handle_exception(server
, err
, &exception
);
3008 } while (exception
.retry
);
3013 static int nfs4_lookup_root_sec(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3014 struct nfs_fsinfo
*info
, rpc_authflavor_t flavor
)
3016 struct rpc_auth_create_args auth_args
= {
3017 .pseudoflavor
= flavor
,
3019 struct rpc_auth
*auth
;
3022 auth
= rpcauth_create(&auth_args
, server
->client
);
3027 ret
= nfs4_lookup_root(server
, fhandle
, info
);
3033 * Retry pseudoroot lookup with various security flavors. We do this when:
3035 * NFSv4.0: the PUTROOTFH operation returns NFS4ERR_WRONGSEC
3036 * NFSv4.1: the server does not support the SECINFO_NO_NAME operation
3038 * Returns zero on success, or a negative NFS4ERR value, or a
3039 * negative errno value.
3041 static int nfs4_find_root_sec(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3042 struct nfs_fsinfo
*info
)
3044 /* Per 3530bis 15.33.5 */
3045 static const rpc_authflavor_t flav_array
[] = {
3049 RPC_AUTH_UNIX
, /* courtesy */
3052 int status
= -EPERM
;
3055 if (server
->auth_info
.flavor_len
> 0) {
3056 /* try each flavor specified by user */
3057 for (i
= 0; i
< server
->auth_info
.flavor_len
; i
++) {
3058 status
= nfs4_lookup_root_sec(server
, fhandle
, info
,
3059 server
->auth_info
.flavors
[i
]);
3060 if (status
== -NFS4ERR_WRONGSEC
|| status
== -EACCES
)
3065 /* no flavors specified by user, try default list */
3066 for (i
= 0; i
< ARRAY_SIZE(flav_array
); i
++) {
3067 status
= nfs4_lookup_root_sec(server
, fhandle
, info
,
3069 if (status
== -NFS4ERR_WRONGSEC
|| status
== -EACCES
)
3076 * -EACCESS could mean that the user doesn't have correct permissions
3077 * to access the mount. It could also mean that we tried to mount
3078 * with a gss auth flavor, but rpc.gssd isn't running. Either way,
3079 * existing mount programs don't handle -EACCES very well so it should
3080 * be mapped to -EPERM instead.
3082 if (status
== -EACCES
)
3087 static int nfs4_do_find_root_sec(struct nfs_server
*server
,
3088 struct nfs_fh
*fhandle
, struct nfs_fsinfo
*info
)
3090 int mv
= server
->nfs_client
->cl_minorversion
;
3091 return nfs_v4_minor_ops
[mv
]->find_root_sec(server
, fhandle
, info
);
3095 * nfs4_proc_get_rootfh - get file handle for server's pseudoroot
3096 * @server: initialized nfs_server handle
3097 * @fhandle: we fill in the pseudo-fs root file handle
3098 * @info: we fill in an FSINFO struct
3099 * @auth_probe: probe the auth flavours
3101 * Returns zero on success, or a negative errno.
3103 int nfs4_proc_get_rootfh(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3104 struct nfs_fsinfo
*info
,
3110 status
= nfs4_lookup_root(server
, fhandle
, info
);
3112 if (auth_probe
|| status
== NFS4ERR_WRONGSEC
)
3113 status
= nfs4_do_find_root_sec(server
, fhandle
, info
);
3116 status
= nfs4_server_capabilities(server
, fhandle
);
3118 status
= nfs4_do_fsinfo(server
, fhandle
, info
);
3120 return nfs4_map_errors(status
);
3123 static int nfs4_proc_get_root(struct nfs_server
*server
, struct nfs_fh
*mntfh
,
3124 struct nfs_fsinfo
*info
)
3127 struct nfs_fattr
*fattr
= info
->fattr
;
3128 struct nfs4_label
*label
= NULL
;
3130 error
= nfs4_server_capabilities(server
, mntfh
);
3132 dprintk("nfs4_get_root: getcaps error = %d\n", -error
);
3136 label
= nfs4_label_alloc(server
, GFP_KERNEL
);
3138 return PTR_ERR(label
);
3140 error
= nfs4_proc_getattr(server
, mntfh
, fattr
, label
);
3142 dprintk("nfs4_get_root: getattr error = %d\n", -error
);
3143 goto err_free_label
;
3146 if (fattr
->valid
& NFS_ATTR_FATTR_FSID
&&
3147 !nfs_fsid_equal(&server
->fsid
, &fattr
->fsid
))
3148 memcpy(&server
->fsid
, &fattr
->fsid
, sizeof(server
->fsid
));
3151 nfs4_label_free(label
);
3157 * Get locations and (maybe) other attributes of a referral.
3158 * Note that we'll actually follow the referral later when
3159 * we detect fsid mismatch in inode revalidation
3161 static int nfs4_get_referral(struct rpc_clnt
*client
, struct inode
*dir
,
3162 const struct qstr
*name
, struct nfs_fattr
*fattr
,
3163 struct nfs_fh
*fhandle
)
3165 int status
= -ENOMEM
;
3166 struct page
*page
= NULL
;
3167 struct nfs4_fs_locations
*locations
= NULL
;
3169 page
= alloc_page(GFP_KERNEL
);
3172 locations
= kmalloc(sizeof(struct nfs4_fs_locations
), GFP_KERNEL
);
3173 if (locations
== NULL
)
3176 status
= nfs4_proc_fs_locations(client
, dir
, name
, locations
, page
);
3181 * If the fsid didn't change, this is a migration event, not a
3182 * referral. Cause us to drop into the exception handler, which
3183 * will kick off migration recovery.
3185 if (nfs_fsid_equal(&NFS_SERVER(dir
)->fsid
, &locations
->fattr
.fsid
)) {
3186 dprintk("%s: server did not return a different fsid for"
3187 " a referral at %s\n", __func__
, name
->name
);
3188 status
= -NFS4ERR_MOVED
;
3191 /* Fixup attributes for the nfs_lookup() call to nfs_fhget() */
3192 nfs_fixup_referral_attributes(&locations
->fattr
);
3194 /* replace the lookup nfs_fattr with the locations nfs_fattr */
3195 memcpy(fattr
, &locations
->fattr
, sizeof(struct nfs_fattr
));
3196 memset(fhandle
, 0, sizeof(struct nfs_fh
));
3204 static int _nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3205 struct nfs_fattr
*fattr
, struct nfs4_label
*label
)
3207 struct nfs4_getattr_arg args
= {
3209 .bitmask
= server
->attr_bitmask
,
3211 struct nfs4_getattr_res res
= {
3216 struct rpc_message msg
= {
3217 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETATTR
],
3222 args
.bitmask
= nfs4_bitmask(server
, label
);
3224 nfs_fattr_init(fattr
);
3225 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3228 static int nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3229 struct nfs_fattr
*fattr
, struct nfs4_label
*label
)
3231 struct nfs4_exception exception
= { };
3234 err
= _nfs4_proc_getattr(server
, fhandle
, fattr
, label
);
3235 trace_nfs4_getattr(server
, fhandle
, fattr
, err
);
3236 err
= nfs4_handle_exception(server
, err
,
3238 } while (exception
.retry
);
3243 * The file is not closed if it is opened due to the a request to change
3244 * the size of the file. The open call will not be needed once the
3245 * VFS layer lookup-intents are implemented.
3247 * Close is called when the inode is destroyed.
3248 * If we haven't opened the file for O_WRONLY, we
3249 * need to in the size_change case to obtain a stateid.
3252 * Because OPEN is always done by name in nfsv4, it is
3253 * possible that we opened a different file by the same
3254 * name. We can recognize this race condition, but we
3255 * can't do anything about it besides returning an error.
3257 * This will be fixed with VFS changes (lookup-intent).
3260 nfs4_proc_setattr(struct dentry
*dentry
, struct nfs_fattr
*fattr
,
3261 struct iattr
*sattr
)
3263 struct inode
*inode
= d_inode(dentry
);
3264 struct rpc_cred
*cred
= NULL
;
3265 struct nfs4_state
*state
= NULL
;
3266 struct nfs4_label
*label
= NULL
;
3269 if (pnfs_ld_layoutret_on_setattr(inode
) &&
3270 sattr
->ia_valid
& ATTR_SIZE
&&
3271 sattr
->ia_size
< i_size_read(inode
))
3272 pnfs_commit_and_return_layout(inode
);
3274 nfs_fattr_init(fattr
);
3276 /* Deal with open(O_TRUNC) */
3277 if (sattr
->ia_valid
& ATTR_OPEN
)
3278 sattr
->ia_valid
&= ~(ATTR_MTIME
|ATTR_CTIME
);
3280 /* Optimization: if the end result is no change, don't RPC */
3281 if ((sattr
->ia_valid
& ~(ATTR_FILE
|ATTR_OPEN
)) == 0)
3284 /* Search for an existing open(O_WRITE) file */
3285 if (sattr
->ia_valid
& ATTR_FILE
) {
3286 struct nfs_open_context
*ctx
;
3288 ctx
= nfs_file_open_context(sattr
->ia_file
);
3295 label
= nfs4_label_alloc(NFS_SERVER(inode
), GFP_KERNEL
);
3297 return PTR_ERR(label
);
3299 status
= nfs4_do_setattr(inode
, cred
, fattr
, sattr
, state
, NULL
, label
);
3301 nfs_setattr_update_inode(inode
, sattr
, fattr
);
3302 nfs_setsecurity(inode
, fattr
, label
);
3304 nfs4_label_free(label
);
3308 static int _nfs4_proc_lookup(struct rpc_clnt
*clnt
, struct inode
*dir
,
3309 const struct qstr
*name
, struct nfs_fh
*fhandle
,
3310 struct nfs_fattr
*fattr
, struct nfs4_label
*label
)
3312 struct nfs_server
*server
= NFS_SERVER(dir
);
3314 struct nfs4_lookup_arg args
= {
3315 .bitmask
= server
->attr_bitmask
,
3316 .dir_fh
= NFS_FH(dir
),
3319 struct nfs4_lookup_res res
= {
3325 struct rpc_message msg
= {
3326 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOOKUP
],
3331 args
.bitmask
= nfs4_bitmask(server
, label
);
3333 nfs_fattr_init(fattr
);
3335 dprintk("NFS call lookup %s\n", name
->name
);
3336 status
= nfs4_call_sync(clnt
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3337 dprintk("NFS reply lookup: %d\n", status
);
3341 static void nfs_fixup_secinfo_attributes(struct nfs_fattr
*fattr
)
3343 fattr
->valid
|= NFS_ATTR_FATTR_TYPE
| NFS_ATTR_FATTR_MODE
|
3344 NFS_ATTR_FATTR_NLINK
| NFS_ATTR_FATTR_MOUNTPOINT
;
3345 fattr
->mode
= S_IFDIR
| S_IRUGO
| S_IXUGO
;
3349 static int nfs4_proc_lookup_common(struct rpc_clnt
**clnt
, struct inode
*dir
,
3350 struct qstr
*name
, struct nfs_fh
*fhandle
,
3351 struct nfs_fattr
*fattr
, struct nfs4_label
*label
)
3353 struct nfs4_exception exception
= { };
3354 struct rpc_clnt
*client
= *clnt
;
3357 err
= _nfs4_proc_lookup(client
, dir
, name
, fhandle
, fattr
, label
);
3358 trace_nfs4_lookup(dir
, name
, err
);
3360 case -NFS4ERR_BADNAME
:
3363 case -NFS4ERR_MOVED
:
3364 err
= nfs4_get_referral(client
, dir
, name
, fattr
, fhandle
);
3365 if (err
== -NFS4ERR_MOVED
)
3366 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
, &exception
);
3368 case -NFS4ERR_WRONGSEC
:
3370 if (client
!= *clnt
)
3372 client
= nfs4_negotiate_security(client
, dir
, name
);
3374 return PTR_ERR(client
);
3376 exception
.retry
= 1;
3379 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
, &exception
);
3381 } while (exception
.retry
);
3386 else if (client
!= *clnt
)
3387 rpc_shutdown_client(client
);
3392 static int nfs4_proc_lookup(struct inode
*dir
, struct qstr
*name
,
3393 struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
,
3394 struct nfs4_label
*label
)
3397 struct rpc_clnt
*client
= NFS_CLIENT(dir
);
3399 status
= nfs4_proc_lookup_common(&client
, dir
, name
, fhandle
, fattr
, label
);
3400 if (client
!= NFS_CLIENT(dir
)) {
3401 rpc_shutdown_client(client
);
3402 nfs_fixup_secinfo_attributes(fattr
);
3408 nfs4_proc_lookup_mountpoint(struct inode
*dir
, struct qstr
*name
,
3409 struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
3411 struct rpc_clnt
*client
= NFS_CLIENT(dir
);
3414 status
= nfs4_proc_lookup_common(&client
, dir
, name
, fhandle
, fattr
, NULL
);
3416 return ERR_PTR(status
);
3417 return (client
== NFS_CLIENT(dir
)) ? rpc_clone_client(client
) : client
;
3420 static int _nfs4_proc_access(struct inode
*inode
, struct nfs_access_entry
*entry
)
3422 struct nfs_server
*server
= NFS_SERVER(inode
);
3423 struct nfs4_accessargs args
= {
3424 .fh
= NFS_FH(inode
),
3425 .bitmask
= server
->cache_consistency_bitmask
,
3427 struct nfs4_accessres res
= {
3430 struct rpc_message msg
= {
3431 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_ACCESS
],
3434 .rpc_cred
= entry
->cred
,
3436 int mode
= entry
->mask
;
3440 * Determine which access bits we want to ask for...
3442 if (mode
& MAY_READ
)
3443 args
.access
|= NFS4_ACCESS_READ
;
3444 if (S_ISDIR(inode
->i_mode
)) {
3445 if (mode
& MAY_WRITE
)
3446 args
.access
|= NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
| NFS4_ACCESS_DELETE
;
3447 if (mode
& MAY_EXEC
)
3448 args
.access
|= NFS4_ACCESS_LOOKUP
;
3450 if (mode
& MAY_WRITE
)
3451 args
.access
|= NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
;
3452 if (mode
& MAY_EXEC
)
3453 args
.access
|= NFS4_ACCESS_EXECUTE
;
3456 res
.fattr
= nfs_alloc_fattr();
3457 if (res
.fattr
== NULL
)
3460 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3462 nfs_access_set_mask(entry
, res
.access
);
3463 nfs_refresh_inode(inode
, res
.fattr
);
3465 nfs_free_fattr(res
.fattr
);
3469 static int nfs4_proc_access(struct inode
*inode
, struct nfs_access_entry
*entry
)
3471 struct nfs4_exception exception
= { };
3474 err
= _nfs4_proc_access(inode
, entry
);
3475 trace_nfs4_access(inode
, err
);
3476 err
= nfs4_handle_exception(NFS_SERVER(inode
), err
,
3478 } while (exception
.retry
);
3483 * TODO: For the time being, we don't try to get any attributes
3484 * along with any of the zero-copy operations READ, READDIR,
3487 * In the case of the first three, we want to put the GETATTR
3488 * after the read-type operation -- this is because it is hard
3489 * to predict the length of a GETATTR response in v4, and thus
3490 * align the READ data correctly. This means that the GETATTR
3491 * may end up partially falling into the page cache, and we should
3492 * shift it into the 'tail' of the xdr_buf before processing.
3493 * To do this efficiently, we need to know the total length
3494 * of data received, which doesn't seem to be available outside
3497 * In the case of WRITE, we also want to put the GETATTR after
3498 * the operation -- in this case because we want to make sure
3499 * we get the post-operation mtime and size.
3501 * Both of these changes to the XDR layer would in fact be quite
3502 * minor, but I decided to leave them for a subsequent patch.
3504 static int _nfs4_proc_readlink(struct inode
*inode
, struct page
*page
,
3505 unsigned int pgbase
, unsigned int pglen
)
3507 struct nfs4_readlink args
= {
3508 .fh
= NFS_FH(inode
),
3513 struct nfs4_readlink_res res
;
3514 struct rpc_message msg
= {
3515 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READLINK
],
3520 return nfs4_call_sync(NFS_SERVER(inode
)->client
, NFS_SERVER(inode
), &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3523 static int nfs4_proc_readlink(struct inode
*inode
, struct page
*page
,
3524 unsigned int pgbase
, unsigned int pglen
)
3526 struct nfs4_exception exception
= { };
3529 err
= _nfs4_proc_readlink(inode
, page
, pgbase
, pglen
);
3530 trace_nfs4_readlink(inode
, err
);
3531 err
= nfs4_handle_exception(NFS_SERVER(inode
), err
,
3533 } while (exception
.retry
);
3538 * This is just for mknod. open(O_CREAT) will always do ->open_context().
3541 nfs4_proc_create(struct inode
*dir
, struct dentry
*dentry
, struct iattr
*sattr
,
3544 struct nfs4_label l
, *ilabel
= NULL
;
3545 struct nfs_open_context
*ctx
;
3546 struct nfs4_state
*state
;
3550 ctx
= alloc_nfs_open_context(dentry
, FMODE_READ
);
3552 return PTR_ERR(ctx
);
3554 ilabel
= nfs4_label_init_security(dir
, dentry
, sattr
, &l
);
3556 sattr
->ia_mode
&= ~current_umask();
3557 state
= nfs4_do_open(dir
, ctx
, flags
, sattr
, ilabel
, &opened
);
3558 if (IS_ERR(state
)) {
3559 status
= PTR_ERR(state
);
3563 nfs4_label_release_security(ilabel
);
3564 put_nfs_open_context(ctx
);
3568 static int _nfs4_proc_remove(struct inode
*dir
, struct qstr
*name
)
3570 struct nfs_server
*server
= NFS_SERVER(dir
);
3571 struct nfs_removeargs args
= {
3575 struct nfs_removeres res
= {
3578 struct rpc_message msg
= {
3579 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_REMOVE
],
3585 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 1);
3587 update_changeattr(dir
, &res
.cinfo
);
3591 static int nfs4_proc_remove(struct inode
*dir
, struct qstr
*name
)
3593 struct nfs4_exception exception
= { };
3596 err
= _nfs4_proc_remove(dir
, name
);
3597 trace_nfs4_remove(dir
, name
, err
);
3598 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
3600 } while (exception
.retry
);
3604 static void nfs4_proc_unlink_setup(struct rpc_message
*msg
, struct inode
*dir
)
3606 struct nfs_server
*server
= NFS_SERVER(dir
);
3607 struct nfs_removeargs
*args
= msg
->rpc_argp
;
3608 struct nfs_removeres
*res
= msg
->rpc_resp
;
3610 res
->server
= server
;
3611 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_REMOVE
];
3612 nfs4_init_sequence(&args
->seq_args
, &res
->seq_res
, 1);
3614 nfs_fattr_init(res
->dir_attr
);
3617 static void nfs4_proc_unlink_rpc_prepare(struct rpc_task
*task
, struct nfs_unlinkdata
*data
)
3619 nfs4_setup_sequence(NFS_SERVER(data
->dir
),
3620 &data
->args
.seq_args
,
3625 static int nfs4_proc_unlink_done(struct rpc_task
*task
, struct inode
*dir
)
3627 struct nfs_unlinkdata
*data
= task
->tk_calldata
;
3628 struct nfs_removeres
*res
= &data
->res
;
3630 if (!nfs4_sequence_done(task
, &res
->seq_res
))
3632 if (nfs4_async_handle_error(task
, res
->server
, NULL
,
3633 &data
->timeout
) == -EAGAIN
)
3635 update_changeattr(dir
, &res
->cinfo
);
3639 static void nfs4_proc_rename_setup(struct rpc_message
*msg
, struct inode
*dir
)
3641 struct nfs_server
*server
= NFS_SERVER(dir
);
3642 struct nfs_renameargs
*arg
= msg
->rpc_argp
;
3643 struct nfs_renameres
*res
= msg
->rpc_resp
;
3645 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENAME
];
3646 res
->server
= server
;
3647 nfs4_init_sequence(&arg
->seq_args
, &res
->seq_res
, 1);
3650 static void nfs4_proc_rename_rpc_prepare(struct rpc_task
*task
, struct nfs_renamedata
*data
)
3652 nfs4_setup_sequence(NFS_SERVER(data
->old_dir
),
3653 &data
->args
.seq_args
,
3658 static int nfs4_proc_rename_done(struct rpc_task
*task
, struct inode
*old_dir
,
3659 struct inode
*new_dir
)
3661 struct nfs_renamedata
*data
= task
->tk_calldata
;
3662 struct nfs_renameres
*res
= &data
->res
;
3664 if (!nfs4_sequence_done(task
, &res
->seq_res
))
3666 if (nfs4_async_handle_error(task
, res
->server
, NULL
, &data
->timeout
) == -EAGAIN
)
3669 update_changeattr(old_dir
, &res
->old_cinfo
);
3670 update_changeattr(new_dir
, &res
->new_cinfo
);
3674 static int _nfs4_proc_link(struct inode
*inode
, struct inode
*dir
, struct qstr
*name
)
3676 struct nfs_server
*server
= NFS_SERVER(inode
);
3677 struct nfs4_link_arg arg
= {
3678 .fh
= NFS_FH(inode
),
3679 .dir_fh
= NFS_FH(dir
),
3681 .bitmask
= server
->attr_bitmask
,
3683 struct nfs4_link_res res
= {
3687 struct rpc_message msg
= {
3688 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LINK
],
3692 int status
= -ENOMEM
;
3694 res
.fattr
= nfs_alloc_fattr();
3695 if (res
.fattr
== NULL
)
3698 res
.label
= nfs4_label_alloc(server
, GFP_KERNEL
);
3699 if (IS_ERR(res
.label
)) {
3700 status
= PTR_ERR(res
.label
);
3703 arg
.bitmask
= nfs4_bitmask(server
, res
.label
);
3705 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
3707 update_changeattr(dir
, &res
.cinfo
);
3708 status
= nfs_post_op_update_inode(inode
, res
.fattr
);
3710 nfs_setsecurity(inode
, res
.fattr
, res
.label
);
3714 nfs4_label_free(res
.label
);
3717 nfs_free_fattr(res
.fattr
);
3721 static int nfs4_proc_link(struct inode
*inode
, struct inode
*dir
, struct qstr
*name
)
3723 struct nfs4_exception exception
= { };
3726 err
= nfs4_handle_exception(NFS_SERVER(inode
),
3727 _nfs4_proc_link(inode
, dir
, name
),
3729 } while (exception
.retry
);
3733 struct nfs4_createdata
{
3734 struct rpc_message msg
;
3735 struct nfs4_create_arg arg
;
3736 struct nfs4_create_res res
;
3738 struct nfs_fattr fattr
;
3739 struct nfs4_label
*label
;
3742 static struct nfs4_createdata
*nfs4_alloc_createdata(struct inode
*dir
,
3743 struct qstr
*name
, struct iattr
*sattr
, u32 ftype
)
3745 struct nfs4_createdata
*data
;
3747 data
= kzalloc(sizeof(*data
), GFP_KERNEL
);
3749 struct nfs_server
*server
= NFS_SERVER(dir
);
3751 data
->label
= nfs4_label_alloc(server
, GFP_KERNEL
);
3752 if (IS_ERR(data
->label
))
3755 data
->msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CREATE
];
3756 data
->msg
.rpc_argp
= &data
->arg
;
3757 data
->msg
.rpc_resp
= &data
->res
;
3758 data
->arg
.dir_fh
= NFS_FH(dir
);
3759 data
->arg
.server
= server
;
3760 data
->arg
.name
= name
;
3761 data
->arg
.attrs
= sattr
;
3762 data
->arg
.ftype
= ftype
;
3763 data
->arg
.bitmask
= nfs4_bitmask(server
, data
->label
);
3764 data
->res
.server
= server
;
3765 data
->res
.fh
= &data
->fh
;
3766 data
->res
.fattr
= &data
->fattr
;
3767 data
->res
.label
= data
->label
;
3768 nfs_fattr_init(data
->res
.fattr
);
3776 static int nfs4_do_create(struct inode
*dir
, struct dentry
*dentry
, struct nfs4_createdata
*data
)
3778 int status
= nfs4_call_sync(NFS_SERVER(dir
)->client
, NFS_SERVER(dir
), &data
->msg
,
3779 &data
->arg
.seq_args
, &data
->res
.seq_res
, 1);
3781 update_changeattr(dir
, &data
->res
.dir_cinfo
);
3782 status
= nfs_instantiate(dentry
, data
->res
.fh
, data
->res
.fattr
, data
->res
.label
);
3787 static void nfs4_free_createdata(struct nfs4_createdata
*data
)
3789 nfs4_label_free(data
->label
);
3793 static int _nfs4_proc_symlink(struct inode
*dir
, struct dentry
*dentry
,
3794 struct page
*page
, unsigned int len
, struct iattr
*sattr
,
3795 struct nfs4_label
*label
)
3797 struct nfs4_createdata
*data
;
3798 int status
= -ENAMETOOLONG
;
3800 if (len
> NFS4_MAXPATHLEN
)
3804 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4LNK
);
3808 data
->msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SYMLINK
];
3809 data
->arg
.u
.symlink
.pages
= &page
;
3810 data
->arg
.u
.symlink
.len
= len
;
3811 data
->arg
.label
= label
;
3813 status
= nfs4_do_create(dir
, dentry
, data
);
3815 nfs4_free_createdata(data
);
3820 static int nfs4_proc_symlink(struct inode
*dir
, struct dentry
*dentry
,
3821 struct page
*page
, unsigned int len
, struct iattr
*sattr
)
3823 struct nfs4_exception exception
= { };
3824 struct nfs4_label l
, *label
= NULL
;
3827 label
= nfs4_label_init_security(dir
, dentry
, sattr
, &l
);
3830 err
= _nfs4_proc_symlink(dir
, dentry
, page
, len
, sattr
, label
);
3831 trace_nfs4_symlink(dir
, &dentry
->d_name
, err
);
3832 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
3834 } while (exception
.retry
);
3836 nfs4_label_release_security(label
);
3840 static int _nfs4_proc_mkdir(struct inode
*dir
, struct dentry
*dentry
,
3841 struct iattr
*sattr
, struct nfs4_label
*label
)
3843 struct nfs4_createdata
*data
;
3844 int status
= -ENOMEM
;
3846 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4DIR
);
3850 data
->arg
.label
= label
;
3851 status
= nfs4_do_create(dir
, dentry
, data
);
3853 nfs4_free_createdata(data
);
3858 static int nfs4_proc_mkdir(struct inode
*dir
, struct dentry
*dentry
,
3859 struct iattr
*sattr
)
3861 struct nfs4_exception exception
= { };
3862 struct nfs4_label l
, *label
= NULL
;
3865 label
= nfs4_label_init_security(dir
, dentry
, sattr
, &l
);
3867 sattr
->ia_mode
&= ~current_umask();
3869 err
= _nfs4_proc_mkdir(dir
, dentry
, sattr
, label
);
3870 trace_nfs4_mkdir(dir
, &dentry
->d_name
, err
);
3871 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
3873 } while (exception
.retry
);
3874 nfs4_label_release_security(label
);
3879 static int _nfs4_proc_readdir(struct dentry
*dentry
, struct rpc_cred
*cred
,
3880 u64 cookie
, struct page
**pages
, unsigned int count
, int plus
)
3882 struct inode
*dir
= d_inode(dentry
);
3883 struct nfs4_readdir_arg args
= {
3888 .bitmask
= NFS_SERVER(d_inode(dentry
))->attr_bitmask
,
3891 struct nfs4_readdir_res res
;
3892 struct rpc_message msg
= {
3893 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READDIR
],
3900 dprintk("%s: dentry = %pd2, cookie = %Lu\n", __func__
,
3902 (unsigned long long)cookie
);
3903 nfs4_setup_readdir(cookie
, NFS_I(dir
)->cookieverf
, dentry
, &args
);
3904 res
.pgbase
= args
.pgbase
;
3905 status
= nfs4_call_sync(NFS_SERVER(dir
)->client
, NFS_SERVER(dir
), &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3907 memcpy(NFS_I(dir
)->cookieverf
, res
.verifier
.data
, NFS4_VERIFIER_SIZE
);
3908 status
+= args
.pgbase
;
3911 nfs_invalidate_atime(dir
);
3913 dprintk("%s: returns %d\n", __func__
, status
);
3917 static int nfs4_proc_readdir(struct dentry
*dentry
, struct rpc_cred
*cred
,
3918 u64 cookie
, struct page
**pages
, unsigned int count
, int plus
)
3920 struct nfs4_exception exception
= { };
3923 err
= _nfs4_proc_readdir(dentry
, cred
, cookie
,
3924 pages
, count
, plus
);
3925 trace_nfs4_readdir(d_inode(dentry
), err
);
3926 err
= nfs4_handle_exception(NFS_SERVER(d_inode(dentry
)), err
,
3928 } while (exception
.retry
);
3932 static int _nfs4_proc_mknod(struct inode
*dir
, struct dentry
*dentry
,
3933 struct iattr
*sattr
, struct nfs4_label
*label
, dev_t rdev
)
3935 struct nfs4_createdata
*data
;
3936 int mode
= sattr
->ia_mode
;
3937 int status
= -ENOMEM
;
3939 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4SOCK
);
3944 data
->arg
.ftype
= NF4FIFO
;
3945 else if (S_ISBLK(mode
)) {
3946 data
->arg
.ftype
= NF4BLK
;
3947 data
->arg
.u
.device
.specdata1
= MAJOR(rdev
);
3948 data
->arg
.u
.device
.specdata2
= MINOR(rdev
);
3950 else if (S_ISCHR(mode
)) {
3951 data
->arg
.ftype
= NF4CHR
;
3952 data
->arg
.u
.device
.specdata1
= MAJOR(rdev
);
3953 data
->arg
.u
.device
.specdata2
= MINOR(rdev
);
3954 } else if (!S_ISSOCK(mode
)) {
3959 data
->arg
.label
= label
;
3960 status
= nfs4_do_create(dir
, dentry
, data
);
3962 nfs4_free_createdata(data
);
3967 static int nfs4_proc_mknod(struct inode
*dir
, struct dentry
*dentry
,
3968 struct iattr
*sattr
, dev_t rdev
)
3970 struct nfs4_exception exception
= { };
3971 struct nfs4_label l
, *label
= NULL
;
3974 label
= nfs4_label_init_security(dir
, dentry
, sattr
, &l
);
3976 sattr
->ia_mode
&= ~current_umask();
3978 err
= _nfs4_proc_mknod(dir
, dentry
, sattr
, label
, rdev
);
3979 trace_nfs4_mknod(dir
, &dentry
->d_name
, err
);
3980 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
3982 } while (exception
.retry
);
3984 nfs4_label_release_security(label
);
3989 static int _nfs4_proc_statfs(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3990 struct nfs_fsstat
*fsstat
)
3992 struct nfs4_statfs_arg args
= {
3994 .bitmask
= server
->attr_bitmask
,
3996 struct nfs4_statfs_res res
= {
3999 struct rpc_message msg
= {
4000 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_STATFS
],
4005 nfs_fattr_init(fsstat
->fattr
);
4006 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
4009 static int nfs4_proc_statfs(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsstat
*fsstat
)
4011 struct nfs4_exception exception
= { };
4014 err
= nfs4_handle_exception(server
,
4015 _nfs4_proc_statfs(server
, fhandle
, fsstat
),
4017 } while (exception
.retry
);
4021 static int _nfs4_do_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
4022 struct nfs_fsinfo
*fsinfo
)
4024 struct nfs4_fsinfo_arg args
= {
4026 .bitmask
= server
->attr_bitmask
,
4028 struct nfs4_fsinfo_res res
= {
4031 struct rpc_message msg
= {
4032 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FSINFO
],
4037 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
4040 static int nfs4_do_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsinfo
*fsinfo
)
4042 struct nfs4_exception exception
= { };
4043 unsigned long now
= jiffies
;
4047 err
= _nfs4_do_fsinfo(server
, fhandle
, fsinfo
);
4048 trace_nfs4_fsinfo(server
, fhandle
, fsinfo
->fattr
, err
);
4050 struct nfs_client
*clp
= server
->nfs_client
;
4052 spin_lock(&clp
->cl_lock
);
4053 clp
->cl_lease_time
= fsinfo
->lease_time
* HZ
;
4054 clp
->cl_last_renewal
= now
;
4055 spin_unlock(&clp
->cl_lock
);
4058 err
= nfs4_handle_exception(server
, err
, &exception
);
4059 } while (exception
.retry
);
4063 static int nfs4_proc_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsinfo
*fsinfo
)
4067 nfs_fattr_init(fsinfo
->fattr
);
4068 error
= nfs4_do_fsinfo(server
, fhandle
, fsinfo
);
4070 /* block layout checks this! */
4071 server
->pnfs_blksize
= fsinfo
->blksize
;
4072 set_pnfs_layoutdriver(server
, fhandle
, fsinfo
->layouttype
);
4078 static int _nfs4_proc_pathconf(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
4079 struct nfs_pathconf
*pathconf
)
4081 struct nfs4_pathconf_arg args
= {
4083 .bitmask
= server
->attr_bitmask
,
4085 struct nfs4_pathconf_res res
= {
4086 .pathconf
= pathconf
,
4088 struct rpc_message msg
= {
4089 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_PATHCONF
],
4094 /* None of the pathconf attributes are mandatory to implement */
4095 if ((args
.bitmask
[0] & nfs4_pathconf_bitmap
[0]) == 0) {
4096 memset(pathconf
, 0, sizeof(*pathconf
));
4100 nfs_fattr_init(pathconf
->fattr
);
4101 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
4104 static int nfs4_proc_pathconf(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
4105 struct nfs_pathconf
*pathconf
)
4107 struct nfs4_exception exception
= { };
4111 err
= nfs4_handle_exception(server
,
4112 _nfs4_proc_pathconf(server
, fhandle
, pathconf
),
4114 } while (exception
.retry
);
4118 int nfs4_set_rw_stateid(nfs4_stateid
*stateid
,
4119 const struct nfs_open_context
*ctx
,
4120 const struct nfs_lock_context
*l_ctx
,
4123 const struct nfs_lockowner
*lockowner
= NULL
;
4126 lockowner
= &l_ctx
->lockowner
;
4127 return nfs4_select_rw_stateid(stateid
, ctx
->state
, fmode
, lockowner
);
4129 EXPORT_SYMBOL_GPL(nfs4_set_rw_stateid
);
4131 static bool nfs4_stateid_is_current(nfs4_stateid
*stateid
,
4132 const struct nfs_open_context
*ctx
,
4133 const struct nfs_lock_context
*l_ctx
,
4136 nfs4_stateid current_stateid
;
4138 /* If the current stateid represents a lost lock, then exit */
4139 if (nfs4_set_rw_stateid(¤t_stateid
, ctx
, l_ctx
, fmode
) == -EIO
)
4141 return nfs4_stateid_match(stateid
, ¤t_stateid
);
4144 static bool nfs4_error_stateid_expired(int err
)
4147 case -NFS4ERR_DELEG_REVOKED
:
4148 case -NFS4ERR_ADMIN_REVOKED
:
4149 case -NFS4ERR_BAD_STATEID
:
4150 case -NFS4ERR_STALE_STATEID
:
4151 case -NFS4ERR_OLD_STATEID
:
4152 case -NFS4ERR_OPENMODE
:
4153 case -NFS4ERR_EXPIRED
:
4159 void __nfs4_read_done_cb(struct nfs_pgio_header
*hdr
)
4161 nfs_invalidate_atime(hdr
->inode
);
4164 static int nfs4_read_done_cb(struct rpc_task
*task
, struct nfs_pgio_header
*hdr
)
4166 struct nfs_server
*server
= NFS_SERVER(hdr
->inode
);
4168 trace_nfs4_read(hdr
, task
->tk_status
);
4169 if (nfs4_async_handle_error(task
, server
,
4170 hdr
->args
.context
->state
,
4172 rpc_restart_call_prepare(task
);
4176 __nfs4_read_done_cb(hdr
);
4177 if (task
->tk_status
> 0)
4178 renew_lease(server
, hdr
->timestamp
);
4182 static bool nfs4_read_stateid_changed(struct rpc_task
*task
,
4183 struct nfs_pgio_args
*args
)
4186 if (!nfs4_error_stateid_expired(task
->tk_status
) ||
4187 nfs4_stateid_is_current(&args
->stateid
,
4192 rpc_restart_call_prepare(task
);
4196 static int nfs4_read_done(struct rpc_task
*task
, struct nfs_pgio_header
*hdr
)
4199 dprintk("--> %s\n", __func__
);
4201 if (!nfs4_sequence_done(task
, &hdr
->res
.seq_res
))
4203 if (nfs4_read_stateid_changed(task
, &hdr
->args
))
4205 return hdr
->pgio_done_cb
? hdr
->pgio_done_cb(task
, hdr
) :
4206 nfs4_read_done_cb(task
, hdr
);
4209 static void nfs4_proc_read_setup(struct nfs_pgio_header
*hdr
,
4210 struct rpc_message
*msg
)
4212 hdr
->timestamp
= jiffies
;
4213 hdr
->pgio_done_cb
= nfs4_read_done_cb
;
4214 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READ
];
4215 nfs4_init_sequence(&hdr
->args
.seq_args
, &hdr
->res
.seq_res
, 0);
4218 static int nfs4_proc_pgio_rpc_prepare(struct rpc_task
*task
,
4219 struct nfs_pgio_header
*hdr
)
4221 if (nfs4_setup_sequence(NFS_SERVER(hdr
->inode
),
4222 &hdr
->args
.seq_args
,
4226 if (nfs4_set_rw_stateid(&hdr
->args
.stateid
, hdr
->args
.context
,
4227 hdr
->args
.lock_context
,
4228 hdr
->rw_ops
->rw_mode
) == -EIO
)
4230 if (unlikely(test_bit(NFS_CONTEXT_BAD
, &hdr
->args
.context
->flags
)))
4235 static int nfs4_write_done_cb(struct rpc_task
*task
,
4236 struct nfs_pgio_header
*hdr
)
4238 struct inode
*inode
= hdr
->inode
;
4240 trace_nfs4_write(hdr
, task
->tk_status
);
4241 if (nfs4_async_handle_error(task
, NFS_SERVER(inode
),
4242 hdr
->args
.context
->state
,
4244 rpc_restart_call_prepare(task
);
4247 if (task
->tk_status
>= 0) {
4248 renew_lease(NFS_SERVER(inode
), hdr
->timestamp
);
4249 nfs_writeback_update_inode(hdr
);
4254 static bool nfs4_write_stateid_changed(struct rpc_task
*task
,
4255 struct nfs_pgio_args
*args
)
4258 if (!nfs4_error_stateid_expired(task
->tk_status
) ||
4259 nfs4_stateid_is_current(&args
->stateid
,
4264 rpc_restart_call_prepare(task
);
4268 static int nfs4_write_done(struct rpc_task
*task
, struct nfs_pgio_header
*hdr
)
4270 if (!nfs4_sequence_done(task
, &hdr
->res
.seq_res
))
4272 if (nfs4_write_stateid_changed(task
, &hdr
->args
))
4274 return hdr
->pgio_done_cb
? hdr
->pgio_done_cb(task
, hdr
) :
4275 nfs4_write_done_cb(task
, hdr
);
4279 bool nfs4_write_need_cache_consistency_data(struct nfs_pgio_header
*hdr
)
4281 /* Don't request attributes for pNFS or O_DIRECT writes */
4282 if (hdr
->ds_clp
!= NULL
|| hdr
->dreq
!= NULL
)
4284 /* Otherwise, request attributes if and only if we don't hold
4287 return nfs4_have_delegation(hdr
->inode
, FMODE_READ
) == 0;
4290 static void nfs4_proc_write_setup(struct nfs_pgio_header
*hdr
,
4291 struct rpc_message
*msg
)
4293 struct nfs_server
*server
= NFS_SERVER(hdr
->inode
);
4295 if (!nfs4_write_need_cache_consistency_data(hdr
)) {
4296 hdr
->args
.bitmask
= NULL
;
4297 hdr
->res
.fattr
= NULL
;
4299 hdr
->args
.bitmask
= server
->cache_consistency_bitmask
;
4301 if (!hdr
->pgio_done_cb
)
4302 hdr
->pgio_done_cb
= nfs4_write_done_cb
;
4303 hdr
->res
.server
= server
;
4304 hdr
->timestamp
= jiffies
;
4306 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_WRITE
];
4307 nfs4_init_sequence(&hdr
->args
.seq_args
, &hdr
->res
.seq_res
, 1);
4310 static void nfs4_proc_commit_rpc_prepare(struct rpc_task
*task
, struct nfs_commit_data
*data
)
4312 nfs4_setup_sequence(NFS_SERVER(data
->inode
),
4313 &data
->args
.seq_args
,
4318 static int nfs4_commit_done_cb(struct rpc_task
*task
, struct nfs_commit_data
*data
)
4320 struct inode
*inode
= data
->inode
;
4322 trace_nfs4_commit(data
, task
->tk_status
);
4323 if (nfs4_async_handle_error(task
, NFS_SERVER(inode
),
4324 NULL
, NULL
) == -EAGAIN
) {
4325 rpc_restart_call_prepare(task
);
4331 static int nfs4_commit_done(struct rpc_task
*task
, struct nfs_commit_data
*data
)
4333 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
4335 return data
->commit_done_cb(task
, data
);
4338 static void nfs4_proc_commit_setup(struct nfs_commit_data
*data
, struct rpc_message
*msg
)
4340 struct nfs_server
*server
= NFS_SERVER(data
->inode
);
4342 if (data
->commit_done_cb
== NULL
)
4343 data
->commit_done_cb
= nfs4_commit_done_cb
;
4344 data
->res
.server
= server
;
4345 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_COMMIT
];
4346 nfs4_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
4349 struct nfs4_renewdata
{
4350 struct nfs_client
*client
;
4351 unsigned long timestamp
;
4355 * nfs4_proc_async_renew(): This is not one of the nfs_rpc_ops; it is a special
4356 * standalone procedure for queueing an asynchronous RENEW.
4358 static void nfs4_renew_release(void *calldata
)
4360 struct nfs4_renewdata
*data
= calldata
;
4361 struct nfs_client
*clp
= data
->client
;
4363 if (atomic_read(&clp
->cl_count
) > 1)
4364 nfs4_schedule_state_renewal(clp
);
4365 nfs_put_client(clp
);
4369 static void nfs4_renew_done(struct rpc_task
*task
, void *calldata
)
4371 struct nfs4_renewdata
*data
= calldata
;
4372 struct nfs_client
*clp
= data
->client
;
4373 unsigned long timestamp
= data
->timestamp
;
4375 trace_nfs4_renew_async(clp
, task
->tk_status
);
4376 switch (task
->tk_status
) {
4379 case -NFS4ERR_LEASE_MOVED
:
4380 nfs4_schedule_lease_moved_recovery(clp
);
4383 /* Unless we're shutting down, schedule state recovery! */
4384 if (test_bit(NFS_CS_RENEWD
, &clp
->cl_res_state
) == 0)
4386 if (task
->tk_status
!= NFS4ERR_CB_PATH_DOWN
) {
4387 nfs4_schedule_lease_recovery(clp
);
4390 nfs4_schedule_path_down_recovery(clp
);
4392 do_renew_lease(clp
, timestamp
);
4395 static const struct rpc_call_ops nfs4_renew_ops
= {
4396 .rpc_call_done
= nfs4_renew_done
,
4397 .rpc_release
= nfs4_renew_release
,
4400 static int nfs4_proc_async_renew(struct nfs_client
*clp
, struct rpc_cred
*cred
, unsigned renew_flags
)
4402 struct rpc_message msg
= {
4403 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENEW
],
4407 struct nfs4_renewdata
*data
;
4409 if (renew_flags
== 0)
4411 if (!atomic_inc_not_zero(&clp
->cl_count
))
4413 data
= kmalloc(sizeof(*data
), GFP_NOFS
);
4417 data
->timestamp
= jiffies
;
4418 return rpc_call_async(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
,
4419 &nfs4_renew_ops
, data
);
4422 static int nfs4_proc_renew(struct nfs_client
*clp
, struct rpc_cred
*cred
)
4424 struct rpc_message msg
= {
4425 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENEW
],
4429 unsigned long now
= jiffies
;
4432 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
4435 do_renew_lease(clp
, now
);
4439 static inline int nfs4_server_supports_acls(struct nfs_server
*server
)
4441 return server
->caps
& NFS_CAP_ACLS
;
4444 /* Assuming that XATTR_SIZE_MAX is a multiple of PAGE_SIZE, and that
4445 * it's OK to put sizeof(void) * (XATTR_SIZE_MAX/PAGE_SIZE) bytes on
4448 #define NFS4ACL_MAXPAGES DIV_ROUND_UP(XATTR_SIZE_MAX, PAGE_SIZE)
4450 static int buf_to_pages_noslab(const void *buf
, size_t buflen
,
4451 struct page
**pages
, unsigned int *pgbase
)
4453 struct page
*newpage
, **spages
;
4459 len
= min_t(size_t, PAGE_SIZE
, buflen
);
4460 newpage
= alloc_page(GFP_KERNEL
);
4462 if (newpage
== NULL
)
4464 memcpy(page_address(newpage
), buf
, len
);
4469 } while (buflen
!= 0);
4475 __free_page(spages
[rc
-1]);
4479 struct nfs4_cached_acl
{
4485 static void nfs4_set_cached_acl(struct inode
*inode
, struct nfs4_cached_acl
*acl
)
4487 struct nfs_inode
*nfsi
= NFS_I(inode
);
4489 spin_lock(&inode
->i_lock
);
4490 kfree(nfsi
->nfs4_acl
);
4491 nfsi
->nfs4_acl
= acl
;
4492 spin_unlock(&inode
->i_lock
);
4495 static void nfs4_zap_acl_attr(struct inode
*inode
)
4497 nfs4_set_cached_acl(inode
, NULL
);
4500 static inline ssize_t
nfs4_read_cached_acl(struct inode
*inode
, char *buf
, size_t buflen
)
4502 struct nfs_inode
*nfsi
= NFS_I(inode
);
4503 struct nfs4_cached_acl
*acl
;
4506 spin_lock(&inode
->i_lock
);
4507 acl
= nfsi
->nfs4_acl
;
4510 if (buf
== NULL
) /* user is just asking for length */
4512 if (acl
->cached
== 0)
4514 ret
= -ERANGE
; /* see getxattr(2) man page */
4515 if (acl
->len
> buflen
)
4517 memcpy(buf
, acl
->data
, acl
->len
);
4521 spin_unlock(&inode
->i_lock
);
4525 static void nfs4_write_cached_acl(struct inode
*inode
, struct page
**pages
, size_t pgbase
, size_t acl_len
)
4527 struct nfs4_cached_acl
*acl
;
4528 size_t buflen
= sizeof(*acl
) + acl_len
;
4530 if (buflen
<= PAGE_SIZE
) {
4531 acl
= kmalloc(buflen
, GFP_KERNEL
);
4535 _copy_from_pages(acl
->data
, pages
, pgbase
, acl_len
);
4537 acl
= kmalloc(sizeof(*acl
), GFP_KERNEL
);
4544 nfs4_set_cached_acl(inode
, acl
);
4548 * The getxattr API returns the required buffer length when called with a
4549 * NULL buf. The NFSv4 acl tool then calls getxattr again after allocating
4550 * the required buf. On a NULL buf, we send a page of data to the server
4551 * guessing that the ACL request can be serviced by a page. If so, we cache
4552 * up to the page of ACL data, and the 2nd call to getxattr is serviced by
4553 * the cache. If not so, we throw away the page, and cache the required
4554 * length. The next getxattr call will then produce another round trip to
4555 * the server, this time with the input buf of the required size.
4557 static ssize_t
__nfs4_get_acl_uncached(struct inode
*inode
, void *buf
, size_t buflen
)
4559 struct page
*pages
[NFS4ACL_MAXPAGES
] = {NULL
, };
4560 struct nfs_getaclargs args
= {
4561 .fh
= NFS_FH(inode
),
4565 struct nfs_getaclres res
= {
4568 struct rpc_message msg
= {
4569 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETACL
],
4573 unsigned int npages
= DIV_ROUND_UP(buflen
, PAGE_SIZE
);
4574 int ret
= -ENOMEM
, i
;
4576 /* As long as we're doing a round trip to the server anyway,
4577 * let's be prepared for a page of acl data. */
4580 if (npages
> ARRAY_SIZE(pages
))
4583 for (i
= 0; i
< npages
; i
++) {
4584 pages
[i
] = alloc_page(GFP_KERNEL
);
4589 /* for decoding across pages */
4590 res
.acl_scratch
= alloc_page(GFP_KERNEL
);
4591 if (!res
.acl_scratch
)
4594 args
.acl_len
= npages
* PAGE_SIZE
;
4595 args
.acl_pgbase
= 0;
4597 dprintk("%s buf %p buflen %zu npages %d args.acl_len %zu\n",
4598 __func__
, buf
, buflen
, npages
, args
.acl_len
);
4599 ret
= nfs4_call_sync(NFS_SERVER(inode
)->client
, NFS_SERVER(inode
),
4600 &msg
, &args
.seq_args
, &res
.seq_res
, 0);
4604 /* Handle the case where the passed-in buffer is too short */
4605 if (res
.acl_flags
& NFS4_ACL_TRUNC
) {
4606 /* Did the user only issue a request for the acl length? */
4612 nfs4_write_cached_acl(inode
, pages
, res
.acl_data_offset
, res
.acl_len
);
4614 if (res
.acl_len
> buflen
) {
4618 _copy_from_pages(buf
, pages
, res
.acl_data_offset
, res
.acl_len
);
4623 for (i
= 0; i
< npages
; i
++)
4625 __free_page(pages
[i
]);
4626 if (res
.acl_scratch
)
4627 __free_page(res
.acl_scratch
);
4631 static ssize_t
nfs4_get_acl_uncached(struct inode
*inode
, void *buf
, size_t buflen
)
4633 struct nfs4_exception exception
= { };
4636 ret
= __nfs4_get_acl_uncached(inode
, buf
, buflen
);
4637 trace_nfs4_get_acl(inode
, ret
);
4640 ret
= nfs4_handle_exception(NFS_SERVER(inode
), ret
, &exception
);
4641 } while (exception
.retry
);
4645 static ssize_t
nfs4_proc_get_acl(struct inode
*inode
, void *buf
, size_t buflen
)
4647 struct nfs_server
*server
= NFS_SERVER(inode
);
4650 if (!nfs4_server_supports_acls(server
))
4652 ret
= nfs_revalidate_inode(server
, inode
);
4655 if (NFS_I(inode
)->cache_validity
& NFS_INO_INVALID_ACL
)
4656 nfs_zap_acl_cache(inode
);
4657 ret
= nfs4_read_cached_acl(inode
, buf
, buflen
);
4659 /* -ENOENT is returned if there is no ACL or if there is an ACL
4660 * but no cached acl data, just the acl length */
4662 return nfs4_get_acl_uncached(inode
, buf
, buflen
);
4665 static int __nfs4_proc_set_acl(struct inode
*inode
, const void *buf
, size_t buflen
)
4667 struct nfs_server
*server
= NFS_SERVER(inode
);
4668 struct page
*pages
[NFS4ACL_MAXPAGES
];
4669 struct nfs_setaclargs arg
= {
4670 .fh
= NFS_FH(inode
),
4674 struct nfs_setaclres res
;
4675 struct rpc_message msg
= {
4676 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETACL
],
4680 unsigned int npages
= DIV_ROUND_UP(buflen
, PAGE_SIZE
);
4683 if (!nfs4_server_supports_acls(server
))
4685 if (npages
> ARRAY_SIZE(pages
))
4687 i
= buf_to_pages_noslab(buf
, buflen
, arg
.acl_pages
, &arg
.acl_pgbase
);
4690 nfs4_inode_return_delegation(inode
);
4691 ret
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
4694 * Free each page after tx, so the only ref left is
4695 * held by the network stack
4698 put_page(pages
[i
-1]);
4701 * Acl update can result in inode attribute update.
4702 * so mark the attribute cache invalid.
4704 spin_lock(&inode
->i_lock
);
4705 NFS_I(inode
)->cache_validity
|= NFS_INO_INVALID_ATTR
;
4706 spin_unlock(&inode
->i_lock
);
4707 nfs_access_zap_cache(inode
);
4708 nfs_zap_acl_cache(inode
);
4712 static int nfs4_proc_set_acl(struct inode
*inode
, const void *buf
, size_t buflen
)
4714 struct nfs4_exception exception
= { };
4717 err
= __nfs4_proc_set_acl(inode
, buf
, buflen
);
4718 trace_nfs4_set_acl(inode
, err
);
4719 err
= nfs4_handle_exception(NFS_SERVER(inode
), err
,
4721 } while (exception
.retry
);
4725 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
4726 static int _nfs4_get_security_label(struct inode
*inode
, void *buf
,
4729 struct nfs_server
*server
= NFS_SERVER(inode
);
4730 struct nfs_fattr fattr
;
4731 struct nfs4_label label
= {0, 0, buflen
, buf
};
4733 u32 bitmask
[3] = { 0, 0, FATTR4_WORD2_SECURITY_LABEL
};
4734 struct nfs4_getattr_arg arg
= {
4735 .fh
= NFS_FH(inode
),
4738 struct nfs4_getattr_res res
= {
4743 struct rpc_message msg
= {
4744 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETATTR
],
4750 nfs_fattr_init(&fattr
);
4752 ret
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 0);
4755 if (!(fattr
.valid
& NFS_ATTR_FATTR_V4_SECURITY_LABEL
))
4757 if (buflen
< label
.len
)
4762 static int nfs4_get_security_label(struct inode
*inode
, void *buf
,
4765 struct nfs4_exception exception
= { };
4768 if (!nfs_server_capable(inode
, NFS_CAP_SECURITY_LABEL
))
4772 err
= _nfs4_get_security_label(inode
, buf
, buflen
);
4773 trace_nfs4_get_security_label(inode
, err
);
4774 err
= nfs4_handle_exception(NFS_SERVER(inode
), err
,
4776 } while (exception
.retry
);
4780 static int _nfs4_do_set_security_label(struct inode
*inode
,
4781 struct nfs4_label
*ilabel
,
4782 struct nfs_fattr
*fattr
,
4783 struct nfs4_label
*olabel
)
4786 struct iattr sattr
= {0};
4787 struct nfs_server
*server
= NFS_SERVER(inode
);
4788 const u32 bitmask
[3] = { 0, 0, FATTR4_WORD2_SECURITY_LABEL
};
4789 struct nfs_setattrargs arg
= {
4790 .fh
= NFS_FH(inode
),
4796 struct nfs_setattrres res
= {
4801 struct rpc_message msg
= {
4802 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETATTR
],
4808 nfs4_stateid_copy(&arg
.stateid
, &zero_stateid
);
4810 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
4812 dprintk("%s failed: %d\n", __func__
, status
);
4817 static int nfs4_do_set_security_label(struct inode
*inode
,
4818 struct nfs4_label
*ilabel
,
4819 struct nfs_fattr
*fattr
,
4820 struct nfs4_label
*olabel
)
4822 struct nfs4_exception exception
= { };
4826 err
= _nfs4_do_set_security_label(inode
, ilabel
,
4828 trace_nfs4_set_security_label(inode
, err
);
4829 err
= nfs4_handle_exception(NFS_SERVER(inode
), err
,
4831 } while (exception
.retry
);
4836 nfs4_set_security_label(struct dentry
*dentry
, const void *buf
, size_t buflen
)
4838 struct nfs4_label ilabel
, *olabel
= NULL
;
4839 struct nfs_fattr fattr
;
4840 struct rpc_cred
*cred
;
4841 struct inode
*inode
= d_inode(dentry
);
4844 if (!nfs_server_capable(inode
, NFS_CAP_SECURITY_LABEL
))
4847 nfs_fattr_init(&fattr
);
4851 ilabel
.label
= (char *)buf
;
4852 ilabel
.len
= buflen
;
4854 cred
= rpc_lookup_cred();
4856 return PTR_ERR(cred
);
4858 olabel
= nfs4_label_alloc(NFS_SERVER(inode
), GFP_KERNEL
);
4859 if (IS_ERR(olabel
)) {
4860 status
= -PTR_ERR(olabel
);
4864 status
= nfs4_do_set_security_label(inode
, &ilabel
, &fattr
, olabel
);
4866 nfs_setsecurity(inode
, &fattr
, olabel
);
4868 nfs4_label_free(olabel
);
4873 #endif /* CONFIG_NFS_V4_SECURITY_LABEL */
4877 nfs4_async_handle_error(struct rpc_task
*task
, const struct nfs_server
*server
,
4878 struct nfs4_state
*state
, long *timeout
)
4880 struct nfs_client
*clp
= server
->nfs_client
;
4882 if (task
->tk_status
>= 0)
4884 switch(task
->tk_status
) {
4885 case -NFS4ERR_DELEG_REVOKED
:
4886 case -NFS4ERR_ADMIN_REVOKED
:
4887 case -NFS4ERR_BAD_STATEID
:
4888 case -NFS4ERR_OPENMODE
:
4891 if (nfs4_schedule_stateid_recovery(server
, state
) < 0)
4892 goto recovery_failed
;
4893 goto wait_on_recovery
;
4894 case -NFS4ERR_EXPIRED
:
4895 if (state
!= NULL
) {
4896 if (nfs4_schedule_stateid_recovery(server
, state
) < 0)
4897 goto recovery_failed
;
4899 case -NFS4ERR_STALE_STATEID
:
4900 case -NFS4ERR_STALE_CLIENTID
:
4901 nfs4_schedule_lease_recovery(clp
);
4902 goto wait_on_recovery
;
4903 case -NFS4ERR_MOVED
:
4904 if (nfs4_schedule_migration_recovery(server
) < 0)
4905 goto recovery_failed
;
4906 goto wait_on_recovery
;
4907 case -NFS4ERR_LEASE_MOVED
:
4908 nfs4_schedule_lease_moved_recovery(clp
);
4909 goto wait_on_recovery
;
4910 #if defined(CONFIG_NFS_V4_1)
4911 case -NFS4ERR_BADSESSION
:
4912 case -NFS4ERR_BADSLOT
:
4913 case -NFS4ERR_BAD_HIGH_SLOT
:
4914 case -NFS4ERR_DEADSESSION
:
4915 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
4916 case -NFS4ERR_SEQ_FALSE_RETRY
:
4917 case -NFS4ERR_SEQ_MISORDERED
:
4918 dprintk("%s ERROR %d, Reset session\n", __func__
,
4920 nfs4_schedule_session_recovery(clp
->cl_session
, task
->tk_status
);
4921 goto wait_on_recovery
;
4922 #endif /* CONFIG_NFS_V4_1 */
4923 case -NFS4ERR_DELAY
:
4924 nfs_inc_server_stats(server
, NFSIOS_DELAY
);
4925 rpc_delay(task
, nfs4_update_delay(timeout
));
4927 case -NFS4ERR_GRACE
:
4928 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
4929 case -NFS4ERR_RETRY_UNCACHED_REP
:
4930 case -NFS4ERR_OLD_STATEID
:
4933 task
->tk_status
= nfs4_map_errors(task
->tk_status
);
4936 task
->tk_status
= -EIO
;
4939 rpc_sleep_on(&clp
->cl_rpcwaitq
, task
, NULL
);
4940 if (test_bit(NFS4CLNT_MANAGER_RUNNING
, &clp
->cl_state
) == 0)
4941 rpc_wake_up_queued_task(&clp
->cl_rpcwaitq
, task
);
4942 if (test_bit(NFS_MIG_FAILED
, &server
->mig_status
))
4943 goto recovery_failed
;
4945 task
->tk_status
= 0;
4949 static void nfs4_init_boot_verifier(const struct nfs_client
*clp
,
4950 nfs4_verifier
*bootverf
)
4954 if (test_bit(NFS4CLNT_PURGE_STATE
, &clp
->cl_state
)) {
4955 /* An impossible timestamp guarantees this value
4956 * will never match a generated boot time. */
4958 verf
[1] = cpu_to_be32(NSEC_PER_SEC
+ 1);
4960 struct nfs_net
*nn
= net_generic(clp
->cl_net
, nfs_net_id
);
4961 verf
[0] = cpu_to_be32(nn
->boot_time
.tv_sec
);
4962 verf
[1] = cpu_to_be32(nn
->boot_time
.tv_nsec
);
4964 memcpy(bootverf
->data
, verf
, sizeof(bootverf
->data
));
4968 nfs4_init_nonuniform_client_string(struct nfs_client
*clp
)
4973 bool retried
= false;
4975 if (clp
->cl_owner_id
!= NULL
)
4979 len
= 10 + strlen(clp
->cl_ipaddr
) + 1 +
4980 strlen(rpc_peeraddr2str(clp
->cl_rpcclient
, RPC_DISPLAY_ADDR
)) +
4982 strlen(rpc_peeraddr2str(clp
->cl_rpcclient
, RPC_DISPLAY_PROTO
)) +
4986 if (len
> NFS4_OPAQUE_LIMIT
+ 1)
4990 * Since this string is allocated at mount time, and held until the
4991 * nfs_client is destroyed, we can use GFP_KERNEL here w/o worrying
4992 * about a memory-reclaim deadlock.
4994 str
= kmalloc(len
, GFP_KERNEL
);
4999 result
= scnprintf(str
, len
, "Linux NFSv4.0 %s/%s %s",
5001 rpc_peeraddr2str(clp
->cl_rpcclient
, RPC_DISPLAY_ADDR
),
5002 rpc_peeraddr2str(clp
->cl_rpcclient
, RPC_DISPLAY_PROTO
));
5005 /* Did something change? */
5006 if (result
>= len
) {
5013 clp
->cl_owner_id
= str
;
5018 nfs4_init_uniquifier_client_string(struct nfs_client
*clp
)
5024 len
= 10 + 10 + 1 + 10 + 1 +
5025 strlen(nfs4_client_id_uniquifier
) + 1 +
5026 strlen(clp
->cl_rpcclient
->cl_nodename
) + 1;
5028 if (len
> NFS4_OPAQUE_LIMIT
+ 1)
5032 * Since this string is allocated at mount time, and held until the
5033 * nfs_client is destroyed, we can use GFP_KERNEL here w/o worrying
5034 * about a memory-reclaim deadlock.
5036 str
= kmalloc(len
, GFP_KERNEL
);
5040 result
= scnprintf(str
, len
, "Linux NFSv%u.%u %s/%s",
5041 clp
->rpc_ops
->version
, clp
->cl_minorversion
,
5042 nfs4_client_id_uniquifier
,
5043 clp
->cl_rpcclient
->cl_nodename
);
5044 if (result
>= len
) {
5048 clp
->cl_owner_id
= str
;
5053 nfs4_init_uniform_client_string(struct nfs_client
*clp
)
5059 if (clp
->cl_owner_id
!= NULL
)
5062 if (nfs4_client_id_uniquifier
[0] != '\0')
5063 return nfs4_init_uniquifier_client_string(clp
);
5065 len
= 10 + 10 + 1 + 10 + 1 +
5066 strlen(clp
->cl_rpcclient
->cl_nodename
) + 1;
5068 if (len
> NFS4_OPAQUE_LIMIT
+ 1)
5072 * Since this string is allocated at mount time, and held until the
5073 * nfs_client is destroyed, we can use GFP_KERNEL here w/o worrying
5074 * about a memory-reclaim deadlock.
5076 str
= kmalloc(len
, GFP_KERNEL
);
5080 result
= scnprintf(str
, len
, "Linux NFSv%u.%u %s",
5081 clp
->rpc_ops
->version
, clp
->cl_minorversion
,
5082 clp
->cl_rpcclient
->cl_nodename
);
5083 if (result
>= len
) {
5087 clp
->cl_owner_id
= str
;
5092 * nfs4_callback_up_net() starts only "tcp" and "tcp6" callback
5093 * services. Advertise one based on the address family of the
5097 nfs4_init_callback_netid(const struct nfs_client
*clp
, char *buf
, size_t len
)
5099 if (strchr(clp
->cl_ipaddr
, ':') != NULL
)
5100 return scnprintf(buf
, len
, "tcp6");
5102 return scnprintf(buf
, len
, "tcp");
5105 static void nfs4_setclientid_done(struct rpc_task
*task
, void *calldata
)
5107 struct nfs4_setclientid
*sc
= calldata
;
5109 if (task
->tk_status
== 0)
5110 sc
->sc_cred
= get_rpccred(task
->tk_rqstp
->rq_cred
);
5113 static const struct rpc_call_ops nfs4_setclientid_ops
= {
5114 .rpc_call_done
= nfs4_setclientid_done
,
5118 * nfs4_proc_setclientid - Negotiate client ID
5119 * @clp: state data structure
5120 * @program: RPC program for NFSv4 callback service
5121 * @port: IP port number for NFS4 callback service
5122 * @cred: RPC credential to use for this call
5123 * @res: where to place the result
5125 * Returns zero, a negative errno, or a negative NFS4ERR status code.
5127 int nfs4_proc_setclientid(struct nfs_client
*clp
, u32 program
,
5128 unsigned short port
, struct rpc_cred
*cred
,
5129 struct nfs4_setclientid_res
*res
)
5131 nfs4_verifier sc_verifier
;
5132 struct nfs4_setclientid setclientid
= {
5133 .sc_verifier
= &sc_verifier
,
5137 struct rpc_message msg
= {
5138 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETCLIENTID
],
5139 .rpc_argp
= &setclientid
,
5143 struct rpc_task
*task
;
5144 struct rpc_task_setup task_setup_data
= {
5145 .rpc_client
= clp
->cl_rpcclient
,
5146 .rpc_message
= &msg
,
5147 .callback_ops
= &nfs4_setclientid_ops
,
5148 .callback_data
= &setclientid
,
5149 .flags
= RPC_TASK_TIMEOUT
,
5153 /* nfs_client_id4 */
5154 nfs4_init_boot_verifier(clp
, &sc_verifier
);
5156 if (test_bit(NFS_CS_MIGRATION
, &clp
->cl_flags
))
5157 status
= nfs4_init_uniform_client_string(clp
);
5159 status
= nfs4_init_nonuniform_client_string(clp
);
5165 setclientid
.sc_netid_len
=
5166 nfs4_init_callback_netid(clp
,
5167 setclientid
.sc_netid
,
5168 sizeof(setclientid
.sc_netid
));
5169 setclientid
.sc_uaddr_len
= scnprintf(setclientid
.sc_uaddr
,
5170 sizeof(setclientid
.sc_uaddr
), "%s.%u.%u",
5171 clp
->cl_ipaddr
, port
>> 8, port
& 255);
5173 dprintk("NFS call setclientid auth=%s, '%s'\n",
5174 clp
->cl_rpcclient
->cl_auth
->au_ops
->au_name
,
5176 task
= rpc_run_task(&task_setup_data
);
5178 status
= PTR_ERR(task
);
5181 status
= task
->tk_status
;
5182 if (setclientid
.sc_cred
) {
5183 clp
->cl_acceptor
= rpcauth_stringify_acceptor(setclientid
.sc_cred
);
5184 put_rpccred(setclientid
.sc_cred
);
5188 trace_nfs4_setclientid(clp
, status
);
5189 dprintk("NFS reply setclientid: %d\n", status
);
5194 * nfs4_proc_setclientid_confirm - Confirm client ID
5195 * @clp: state data structure
5196 * @res: result of a previous SETCLIENTID
5197 * @cred: RPC credential to use for this call
5199 * Returns zero, a negative errno, or a negative NFS4ERR status code.
5201 int nfs4_proc_setclientid_confirm(struct nfs_client
*clp
,
5202 struct nfs4_setclientid_res
*arg
,
5203 struct rpc_cred
*cred
)
5205 struct rpc_message msg
= {
5206 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETCLIENTID_CONFIRM
],
5212 dprintk("NFS call setclientid_confirm auth=%s, (client ID %llx)\n",
5213 clp
->cl_rpcclient
->cl_auth
->au_ops
->au_name
,
5215 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
5216 trace_nfs4_setclientid_confirm(clp
, status
);
5217 dprintk("NFS reply setclientid_confirm: %d\n", status
);
5221 struct nfs4_delegreturndata
{
5222 struct nfs4_delegreturnargs args
;
5223 struct nfs4_delegreturnres res
;
5225 nfs4_stateid stateid
;
5226 unsigned long timestamp
;
5227 struct nfs_fattr fattr
;
5229 struct inode
*inode
;
5234 static void nfs4_delegreturn_done(struct rpc_task
*task
, void *calldata
)
5236 struct nfs4_delegreturndata
*data
= calldata
;
5238 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
5241 trace_nfs4_delegreturn_exit(&data
->args
, &data
->res
, task
->tk_status
);
5242 switch (task
->tk_status
) {
5244 renew_lease(data
->res
.server
, data
->timestamp
);
5245 case -NFS4ERR_ADMIN_REVOKED
:
5246 case -NFS4ERR_DELEG_REVOKED
:
5247 case -NFS4ERR_BAD_STATEID
:
5248 case -NFS4ERR_OLD_STATEID
:
5249 case -NFS4ERR_STALE_STATEID
:
5250 case -NFS4ERR_EXPIRED
:
5251 task
->tk_status
= 0;
5253 pnfs_roc_set_barrier(data
->inode
, data
->roc_barrier
);
5256 if (nfs4_async_handle_error(task
, data
->res
.server
,
5257 NULL
, NULL
) == -EAGAIN
) {
5258 rpc_restart_call_prepare(task
);
5262 data
->rpc_status
= task
->tk_status
;
5265 static void nfs4_delegreturn_release(void *calldata
)
5267 struct nfs4_delegreturndata
*data
= calldata
;
5268 struct inode
*inode
= data
->inode
;
5272 pnfs_roc_release(inode
);
5273 nfs_iput_and_deactive(inode
);
5278 static void nfs4_delegreturn_prepare(struct rpc_task
*task
, void *data
)
5280 struct nfs4_delegreturndata
*d_data
;
5282 d_data
= (struct nfs4_delegreturndata
*)data
;
5285 pnfs_roc_drain(d_data
->inode
, &d_data
->roc_barrier
, task
))
5288 nfs4_setup_sequence(d_data
->res
.server
,
5289 &d_data
->args
.seq_args
,
5290 &d_data
->res
.seq_res
,
5294 static const struct rpc_call_ops nfs4_delegreturn_ops
= {
5295 .rpc_call_prepare
= nfs4_delegreturn_prepare
,
5296 .rpc_call_done
= nfs4_delegreturn_done
,
5297 .rpc_release
= nfs4_delegreturn_release
,
5300 static int _nfs4_proc_delegreturn(struct inode
*inode
, struct rpc_cred
*cred
, const nfs4_stateid
*stateid
, int issync
)
5302 struct nfs4_delegreturndata
*data
;
5303 struct nfs_server
*server
= NFS_SERVER(inode
);
5304 struct rpc_task
*task
;
5305 struct rpc_message msg
= {
5306 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DELEGRETURN
],
5309 struct rpc_task_setup task_setup_data
= {
5310 .rpc_client
= server
->client
,
5311 .rpc_message
= &msg
,
5312 .callback_ops
= &nfs4_delegreturn_ops
,
5313 .flags
= RPC_TASK_ASYNC
,
5317 data
= kzalloc(sizeof(*data
), GFP_NOFS
);
5320 nfs4_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
5321 data
->args
.fhandle
= &data
->fh
;
5322 data
->args
.stateid
= &data
->stateid
;
5323 data
->args
.bitmask
= server
->cache_consistency_bitmask
;
5324 nfs_copy_fh(&data
->fh
, NFS_FH(inode
));
5325 nfs4_stateid_copy(&data
->stateid
, stateid
);
5326 data
->res
.fattr
= &data
->fattr
;
5327 data
->res
.server
= server
;
5328 nfs_fattr_init(data
->res
.fattr
);
5329 data
->timestamp
= jiffies
;
5330 data
->rpc_status
= 0;
5331 data
->inode
= nfs_igrab_and_active(inode
);
5333 data
->roc
= nfs4_roc(inode
);
5335 task_setup_data
.callback_data
= data
;
5336 msg
.rpc_argp
= &data
->args
;
5337 msg
.rpc_resp
= &data
->res
;
5338 task
= rpc_run_task(&task_setup_data
);
5340 return PTR_ERR(task
);
5343 status
= nfs4_wait_for_completion_rpc_task(task
);
5346 status
= data
->rpc_status
;
5348 nfs_post_op_update_inode_force_wcc(inode
, &data
->fattr
);
5350 nfs_refresh_inode(inode
, &data
->fattr
);
5356 int nfs4_proc_delegreturn(struct inode
*inode
, struct rpc_cred
*cred
, const nfs4_stateid
*stateid
, int issync
)
5358 struct nfs_server
*server
= NFS_SERVER(inode
);
5359 struct nfs4_exception exception
= { };
5362 err
= _nfs4_proc_delegreturn(inode
, cred
, stateid
, issync
);
5363 trace_nfs4_delegreturn(inode
, err
);
5365 case -NFS4ERR_STALE_STATEID
:
5366 case -NFS4ERR_EXPIRED
:
5370 err
= nfs4_handle_exception(server
, err
, &exception
);
5371 } while (exception
.retry
);
5375 #define NFS4_LOCK_MINTIMEOUT (1 * HZ)
5376 #define NFS4_LOCK_MAXTIMEOUT (30 * HZ)
5379 * sleep, with exponential backoff, and retry the LOCK operation.
5381 static unsigned long
5382 nfs4_set_lock_task_retry(unsigned long timeout
)
5384 freezable_schedule_timeout_killable_unsafe(timeout
);
5386 if (timeout
> NFS4_LOCK_MAXTIMEOUT
)
5387 return NFS4_LOCK_MAXTIMEOUT
;
5391 static int _nfs4_proc_getlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
5393 struct inode
*inode
= state
->inode
;
5394 struct nfs_server
*server
= NFS_SERVER(inode
);
5395 struct nfs_client
*clp
= server
->nfs_client
;
5396 struct nfs_lockt_args arg
= {
5397 .fh
= NFS_FH(inode
),
5400 struct nfs_lockt_res res
= {
5403 struct rpc_message msg
= {
5404 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCKT
],
5407 .rpc_cred
= state
->owner
->so_cred
,
5409 struct nfs4_lock_state
*lsp
;
5412 arg
.lock_owner
.clientid
= clp
->cl_clientid
;
5413 status
= nfs4_set_lock_state(state
, request
);
5416 lsp
= request
->fl_u
.nfs4_fl
.owner
;
5417 arg
.lock_owner
.id
= lsp
->ls_seqid
.owner_id
;
5418 arg
.lock_owner
.s_dev
= server
->s_dev
;
5419 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
5422 request
->fl_type
= F_UNLCK
;
5424 case -NFS4ERR_DENIED
:
5427 request
->fl_ops
->fl_release_private(request
);
5428 request
->fl_ops
= NULL
;
5433 static int nfs4_proc_getlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
5435 struct nfs4_exception exception
= { };
5439 err
= _nfs4_proc_getlk(state
, cmd
, request
);
5440 trace_nfs4_get_lock(request
, state
, cmd
, err
);
5441 err
= nfs4_handle_exception(NFS_SERVER(state
->inode
), err
,
5443 } while (exception
.retry
);
5447 static int do_vfs_lock(struct file
*file
, struct file_lock
*fl
)
5450 switch (fl
->fl_flags
& (FL_POSIX
|FL_FLOCK
)) {
5452 res
= posix_lock_file_wait(file
, fl
);
5455 res
= flock_lock_file_wait(file
, fl
);
5463 struct nfs4_unlockdata
{
5464 struct nfs_locku_args arg
;
5465 struct nfs_locku_res res
;
5466 struct nfs4_lock_state
*lsp
;
5467 struct nfs_open_context
*ctx
;
5468 struct file_lock fl
;
5469 const struct nfs_server
*server
;
5470 unsigned long timestamp
;
5473 static struct nfs4_unlockdata
*nfs4_alloc_unlockdata(struct file_lock
*fl
,
5474 struct nfs_open_context
*ctx
,
5475 struct nfs4_lock_state
*lsp
,
5476 struct nfs_seqid
*seqid
)
5478 struct nfs4_unlockdata
*p
;
5479 struct inode
*inode
= lsp
->ls_state
->inode
;
5481 p
= kzalloc(sizeof(*p
), GFP_NOFS
);
5484 p
->arg
.fh
= NFS_FH(inode
);
5486 p
->arg
.seqid
= seqid
;
5487 p
->res
.seqid
= seqid
;
5489 atomic_inc(&lsp
->ls_count
);
5490 /* Ensure we don't close file until we're done freeing locks! */
5491 p
->ctx
= get_nfs_open_context(ctx
);
5492 get_file(fl
->fl_file
);
5493 memcpy(&p
->fl
, fl
, sizeof(p
->fl
));
5494 p
->server
= NFS_SERVER(inode
);
5498 static void nfs4_locku_release_calldata(void *data
)
5500 struct nfs4_unlockdata
*calldata
= data
;
5501 nfs_free_seqid(calldata
->arg
.seqid
);
5502 nfs4_put_lock_state(calldata
->lsp
);
5503 put_nfs_open_context(calldata
->ctx
);
5504 fput(calldata
->fl
.fl_file
);
5508 static void nfs4_locku_done(struct rpc_task
*task
, void *data
)
5510 struct nfs4_unlockdata
*calldata
= data
;
5512 if (!nfs4_sequence_done(task
, &calldata
->res
.seq_res
))
5514 switch (task
->tk_status
) {
5516 renew_lease(calldata
->server
, calldata
->timestamp
);
5517 do_vfs_lock(calldata
->fl
.fl_file
, &calldata
->fl
);
5518 if (nfs4_update_lock_stateid(calldata
->lsp
,
5519 &calldata
->res
.stateid
))
5521 case -NFS4ERR_BAD_STATEID
:
5522 case -NFS4ERR_OLD_STATEID
:
5523 case -NFS4ERR_STALE_STATEID
:
5524 case -NFS4ERR_EXPIRED
:
5525 if (!nfs4_stateid_match(&calldata
->arg
.stateid
,
5526 &calldata
->lsp
->ls_stateid
))
5527 rpc_restart_call_prepare(task
);
5530 if (nfs4_async_handle_error(task
, calldata
->server
,
5531 NULL
, NULL
) == -EAGAIN
)
5532 rpc_restart_call_prepare(task
);
5534 nfs_release_seqid(calldata
->arg
.seqid
);
5537 static void nfs4_locku_prepare(struct rpc_task
*task
, void *data
)
5539 struct nfs4_unlockdata
*calldata
= data
;
5541 if (nfs_wait_on_sequence(calldata
->arg
.seqid
, task
) != 0)
5543 nfs4_stateid_copy(&calldata
->arg
.stateid
, &calldata
->lsp
->ls_stateid
);
5544 if (test_bit(NFS_LOCK_INITIALIZED
, &calldata
->lsp
->ls_flags
) == 0) {
5545 /* Note: exit _without_ running nfs4_locku_done */
5548 calldata
->timestamp
= jiffies
;
5549 if (nfs4_setup_sequence(calldata
->server
,
5550 &calldata
->arg
.seq_args
,
5551 &calldata
->res
.seq_res
,
5553 nfs_release_seqid(calldata
->arg
.seqid
);
5556 task
->tk_action
= NULL
;
5558 nfs4_sequence_done(task
, &calldata
->res
.seq_res
);
5561 static const struct rpc_call_ops nfs4_locku_ops
= {
5562 .rpc_call_prepare
= nfs4_locku_prepare
,
5563 .rpc_call_done
= nfs4_locku_done
,
5564 .rpc_release
= nfs4_locku_release_calldata
,
5567 static struct rpc_task
*nfs4_do_unlck(struct file_lock
*fl
,
5568 struct nfs_open_context
*ctx
,
5569 struct nfs4_lock_state
*lsp
,
5570 struct nfs_seqid
*seqid
)
5572 struct nfs4_unlockdata
*data
;
5573 struct rpc_message msg
= {
5574 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCKU
],
5575 .rpc_cred
= ctx
->cred
,
5577 struct rpc_task_setup task_setup_data
= {
5578 .rpc_client
= NFS_CLIENT(lsp
->ls_state
->inode
),
5579 .rpc_message
= &msg
,
5580 .callback_ops
= &nfs4_locku_ops
,
5581 .workqueue
= nfsiod_workqueue
,
5582 .flags
= RPC_TASK_ASYNC
,
5585 nfs4_state_protect(NFS_SERVER(lsp
->ls_state
->inode
)->nfs_client
,
5586 NFS_SP4_MACH_CRED_CLEANUP
, &task_setup_data
.rpc_client
, &msg
);
5588 /* Ensure this is an unlock - when canceling a lock, the
5589 * canceled lock is passed in, and it won't be an unlock.
5591 fl
->fl_type
= F_UNLCK
;
5593 data
= nfs4_alloc_unlockdata(fl
, ctx
, lsp
, seqid
);
5595 nfs_free_seqid(seqid
);
5596 return ERR_PTR(-ENOMEM
);
5599 nfs4_init_sequence(&data
->arg
.seq_args
, &data
->res
.seq_res
, 1);
5600 msg
.rpc_argp
= &data
->arg
;
5601 msg
.rpc_resp
= &data
->res
;
5602 task_setup_data
.callback_data
= data
;
5603 return rpc_run_task(&task_setup_data
);
5606 static int nfs4_proc_unlck(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
5608 struct inode
*inode
= state
->inode
;
5609 struct nfs4_state_owner
*sp
= state
->owner
;
5610 struct nfs_inode
*nfsi
= NFS_I(inode
);
5611 struct nfs_seqid
*seqid
;
5612 struct nfs4_lock_state
*lsp
;
5613 struct rpc_task
*task
;
5614 struct nfs_seqid
*(*alloc_seqid
)(struct nfs_seqid_counter
*, gfp_t
);
5616 unsigned char fl_flags
= request
->fl_flags
;
5618 status
= nfs4_set_lock_state(state
, request
);
5619 /* Unlock _before_ we do the RPC call */
5620 request
->fl_flags
|= FL_EXISTS
;
5621 /* Exclude nfs_delegation_claim_locks() */
5622 mutex_lock(&sp
->so_delegreturn_mutex
);
5623 /* Exclude nfs4_reclaim_open_stateid() - note nesting! */
5624 down_read(&nfsi
->rwsem
);
5625 if (do_vfs_lock(request
->fl_file
, request
) == -ENOENT
) {
5626 up_read(&nfsi
->rwsem
);
5627 mutex_unlock(&sp
->so_delegreturn_mutex
);
5630 up_read(&nfsi
->rwsem
);
5631 mutex_unlock(&sp
->so_delegreturn_mutex
);
5634 /* Is this a delegated lock? */
5635 lsp
= request
->fl_u
.nfs4_fl
.owner
;
5636 if (test_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
) == 0)
5638 alloc_seqid
= NFS_SERVER(inode
)->nfs_client
->cl_mvops
->alloc_seqid
;
5639 seqid
= alloc_seqid(&lsp
->ls_seqid
, GFP_KERNEL
);
5643 task
= nfs4_do_unlck(request
, nfs_file_open_context(request
->fl_file
), lsp
, seqid
);
5644 status
= PTR_ERR(task
);
5647 status
= nfs4_wait_for_completion_rpc_task(task
);
5650 request
->fl_flags
= fl_flags
;
5651 trace_nfs4_unlock(request
, state
, F_SETLK
, status
);
5655 struct nfs4_lockdata
{
5656 struct nfs_lock_args arg
;
5657 struct nfs_lock_res res
;
5658 struct nfs4_lock_state
*lsp
;
5659 struct nfs_open_context
*ctx
;
5660 struct file_lock fl
;
5661 unsigned long timestamp
;
5664 struct nfs_server
*server
;
5667 static struct nfs4_lockdata
*nfs4_alloc_lockdata(struct file_lock
*fl
,
5668 struct nfs_open_context
*ctx
, struct nfs4_lock_state
*lsp
,
5671 struct nfs4_lockdata
*p
;
5672 struct inode
*inode
= lsp
->ls_state
->inode
;
5673 struct nfs_server
*server
= NFS_SERVER(inode
);
5674 struct nfs_seqid
*(*alloc_seqid
)(struct nfs_seqid_counter
*, gfp_t
);
5676 p
= kzalloc(sizeof(*p
), gfp_mask
);
5680 p
->arg
.fh
= NFS_FH(inode
);
5682 p
->arg
.open_seqid
= nfs_alloc_seqid(&lsp
->ls_state
->owner
->so_seqid
, gfp_mask
);
5683 if (IS_ERR(p
->arg
.open_seqid
))
5685 alloc_seqid
= server
->nfs_client
->cl_mvops
->alloc_seqid
;
5686 p
->arg
.lock_seqid
= alloc_seqid(&lsp
->ls_seqid
, gfp_mask
);
5687 if (IS_ERR(p
->arg
.lock_seqid
))
5688 goto out_free_seqid
;
5689 p
->arg
.lock_owner
.clientid
= server
->nfs_client
->cl_clientid
;
5690 p
->arg
.lock_owner
.id
= lsp
->ls_seqid
.owner_id
;
5691 p
->arg
.lock_owner
.s_dev
= server
->s_dev
;
5692 p
->res
.lock_seqid
= p
->arg
.lock_seqid
;
5695 atomic_inc(&lsp
->ls_count
);
5696 p
->ctx
= get_nfs_open_context(ctx
);
5697 get_file(fl
->fl_file
);
5698 memcpy(&p
->fl
, fl
, sizeof(p
->fl
));
5701 nfs_free_seqid(p
->arg
.open_seqid
);
5707 static void nfs4_lock_prepare(struct rpc_task
*task
, void *calldata
)
5709 struct nfs4_lockdata
*data
= calldata
;
5710 struct nfs4_state
*state
= data
->lsp
->ls_state
;
5712 dprintk("%s: begin!\n", __func__
);
5713 if (nfs_wait_on_sequence(data
->arg
.lock_seqid
, task
) != 0)
5715 /* Do we need to do an open_to_lock_owner? */
5716 if (!test_bit(NFS_LOCK_INITIALIZED
, &data
->lsp
->ls_flags
)) {
5717 if (nfs_wait_on_sequence(data
->arg
.open_seqid
, task
) != 0) {
5718 goto out_release_lock_seqid
;
5720 nfs4_stateid_copy(&data
->arg
.open_stateid
,
5721 &state
->open_stateid
);
5722 data
->arg
.new_lock_owner
= 1;
5723 data
->res
.open_seqid
= data
->arg
.open_seqid
;
5725 data
->arg
.new_lock_owner
= 0;
5726 nfs4_stateid_copy(&data
->arg
.lock_stateid
,
5727 &data
->lsp
->ls_stateid
);
5729 if (!nfs4_valid_open_stateid(state
)) {
5730 data
->rpc_status
= -EBADF
;
5731 task
->tk_action
= NULL
;
5732 goto out_release_open_seqid
;
5734 data
->timestamp
= jiffies
;
5735 if (nfs4_setup_sequence(data
->server
,
5736 &data
->arg
.seq_args
,
5740 out_release_open_seqid
:
5741 nfs_release_seqid(data
->arg
.open_seqid
);
5742 out_release_lock_seqid
:
5743 nfs_release_seqid(data
->arg
.lock_seqid
);
5745 nfs4_sequence_done(task
, &data
->res
.seq_res
);
5746 dprintk("%s: done!, ret = %d\n", __func__
, data
->rpc_status
);
5749 static void nfs4_lock_done(struct rpc_task
*task
, void *calldata
)
5751 struct nfs4_lockdata
*data
= calldata
;
5752 struct nfs4_lock_state
*lsp
= data
->lsp
;
5754 dprintk("%s: begin!\n", __func__
);
5756 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
5759 data
->rpc_status
= task
->tk_status
;
5760 switch (task
->tk_status
) {
5762 renew_lease(NFS_SERVER(d_inode(data
->ctx
->dentry
)),
5764 if (data
->arg
.new_lock
) {
5765 data
->fl
.fl_flags
&= ~(FL_SLEEP
| FL_ACCESS
);
5766 if (do_vfs_lock(data
->fl
.fl_file
, &data
->fl
) < 0) {
5767 rpc_restart_call_prepare(task
);
5771 if (data
->arg
.new_lock_owner
!= 0) {
5772 nfs_confirm_seqid(&lsp
->ls_seqid
, 0);
5773 nfs4_stateid_copy(&lsp
->ls_stateid
, &data
->res
.stateid
);
5774 set_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
);
5775 } else if (!nfs4_update_lock_stateid(lsp
, &data
->res
.stateid
))
5776 rpc_restart_call_prepare(task
);
5778 case -NFS4ERR_BAD_STATEID
:
5779 case -NFS4ERR_OLD_STATEID
:
5780 case -NFS4ERR_STALE_STATEID
:
5781 case -NFS4ERR_EXPIRED
:
5782 if (data
->arg
.new_lock_owner
!= 0) {
5783 if (!nfs4_stateid_match(&data
->arg
.open_stateid
,
5784 &lsp
->ls_state
->open_stateid
))
5785 rpc_restart_call_prepare(task
);
5786 } else if (!nfs4_stateid_match(&data
->arg
.lock_stateid
,
5788 rpc_restart_call_prepare(task
);
5790 dprintk("%s: done, ret = %d!\n", __func__
, data
->rpc_status
);
5793 static void nfs4_lock_release(void *calldata
)
5795 struct nfs4_lockdata
*data
= calldata
;
5797 dprintk("%s: begin!\n", __func__
);
5798 nfs_free_seqid(data
->arg
.open_seqid
);
5799 if (data
->cancelled
!= 0) {
5800 struct rpc_task
*task
;
5801 task
= nfs4_do_unlck(&data
->fl
, data
->ctx
, data
->lsp
,
5802 data
->arg
.lock_seqid
);
5804 rpc_put_task_async(task
);
5805 dprintk("%s: cancelling lock!\n", __func__
);
5807 nfs_free_seqid(data
->arg
.lock_seqid
);
5808 nfs4_put_lock_state(data
->lsp
);
5809 put_nfs_open_context(data
->ctx
);
5810 fput(data
->fl
.fl_file
);
5812 dprintk("%s: done!\n", __func__
);
5815 static const struct rpc_call_ops nfs4_lock_ops
= {
5816 .rpc_call_prepare
= nfs4_lock_prepare
,
5817 .rpc_call_done
= nfs4_lock_done
,
5818 .rpc_release
= nfs4_lock_release
,
5821 static void nfs4_handle_setlk_error(struct nfs_server
*server
, struct nfs4_lock_state
*lsp
, int new_lock_owner
, int error
)
5824 case -NFS4ERR_ADMIN_REVOKED
:
5825 case -NFS4ERR_BAD_STATEID
:
5826 lsp
->ls_seqid
.flags
&= ~NFS_SEQID_CONFIRMED
;
5827 if (new_lock_owner
!= 0 ||
5828 test_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
) != 0)
5829 nfs4_schedule_stateid_recovery(server
, lsp
->ls_state
);
5831 case -NFS4ERR_STALE_STATEID
:
5832 lsp
->ls_seqid
.flags
&= ~NFS_SEQID_CONFIRMED
;
5833 case -NFS4ERR_EXPIRED
:
5834 nfs4_schedule_lease_recovery(server
->nfs_client
);
5838 static int _nfs4_do_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*fl
, int recovery_type
)
5840 struct nfs4_lockdata
*data
;
5841 struct rpc_task
*task
;
5842 struct rpc_message msg
= {
5843 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCK
],
5844 .rpc_cred
= state
->owner
->so_cred
,
5846 struct rpc_task_setup task_setup_data
= {
5847 .rpc_client
= NFS_CLIENT(state
->inode
),
5848 .rpc_message
= &msg
,
5849 .callback_ops
= &nfs4_lock_ops
,
5850 .workqueue
= nfsiod_workqueue
,
5851 .flags
= RPC_TASK_ASYNC
,
5855 dprintk("%s: begin!\n", __func__
);
5856 data
= nfs4_alloc_lockdata(fl
, nfs_file_open_context(fl
->fl_file
),
5857 fl
->fl_u
.nfs4_fl
.owner
,
5858 recovery_type
== NFS_LOCK_NEW
? GFP_KERNEL
: GFP_NOFS
);
5862 data
->arg
.block
= 1;
5863 nfs4_init_sequence(&data
->arg
.seq_args
, &data
->res
.seq_res
, 1);
5864 msg
.rpc_argp
= &data
->arg
;
5865 msg
.rpc_resp
= &data
->res
;
5866 task_setup_data
.callback_data
= data
;
5867 if (recovery_type
> NFS_LOCK_NEW
) {
5868 if (recovery_type
== NFS_LOCK_RECLAIM
)
5869 data
->arg
.reclaim
= NFS_LOCK_RECLAIM
;
5870 nfs4_set_sequence_privileged(&data
->arg
.seq_args
);
5872 data
->arg
.new_lock
= 1;
5873 task
= rpc_run_task(&task_setup_data
);
5875 return PTR_ERR(task
);
5876 ret
= nfs4_wait_for_completion_rpc_task(task
);
5878 ret
= data
->rpc_status
;
5880 nfs4_handle_setlk_error(data
->server
, data
->lsp
,
5881 data
->arg
.new_lock_owner
, ret
);
5883 data
->cancelled
= 1;
5885 dprintk("%s: done, ret = %d!\n", __func__
, ret
);
5889 static int nfs4_lock_reclaim(struct nfs4_state
*state
, struct file_lock
*request
)
5891 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
5892 struct nfs4_exception exception
= {
5893 .inode
= state
->inode
,
5898 /* Cache the lock if possible... */
5899 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) != 0)
5901 err
= _nfs4_do_setlk(state
, F_SETLK
, request
, NFS_LOCK_RECLAIM
);
5902 trace_nfs4_lock_reclaim(request
, state
, F_SETLK
, err
);
5903 if (err
!= -NFS4ERR_DELAY
)
5905 nfs4_handle_exception(server
, err
, &exception
);
5906 } while (exception
.retry
);
5910 static int nfs4_lock_expired(struct nfs4_state
*state
, struct file_lock
*request
)
5912 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
5913 struct nfs4_exception exception
= {
5914 .inode
= state
->inode
,
5918 err
= nfs4_set_lock_state(state
, request
);
5921 if (!recover_lost_locks
) {
5922 set_bit(NFS_LOCK_LOST
, &request
->fl_u
.nfs4_fl
.owner
->ls_flags
);
5926 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) != 0)
5928 err
= _nfs4_do_setlk(state
, F_SETLK
, request
, NFS_LOCK_EXPIRED
);
5929 trace_nfs4_lock_expired(request
, state
, F_SETLK
, err
);
5933 case -NFS4ERR_GRACE
:
5934 case -NFS4ERR_DELAY
:
5935 nfs4_handle_exception(server
, err
, &exception
);
5938 } while (exception
.retry
);
5943 #if defined(CONFIG_NFS_V4_1)
5945 * nfs41_check_expired_locks - possibly free a lock stateid
5947 * @state: NFSv4 state for an inode
5949 * Returns NFS_OK if recovery for this stateid is now finished.
5950 * Otherwise a negative NFS4ERR value is returned.
5952 static int nfs41_check_expired_locks(struct nfs4_state
*state
)
5954 int status
, ret
= -NFS4ERR_BAD_STATEID
;
5955 struct nfs4_lock_state
*lsp
;
5956 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
5958 list_for_each_entry(lsp
, &state
->lock_states
, ls_locks
) {
5959 if (test_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
)) {
5960 struct rpc_cred
*cred
= lsp
->ls_state
->owner
->so_cred
;
5962 status
= nfs41_test_stateid(server
,
5965 trace_nfs4_test_lock_stateid(state
, lsp
, status
);
5966 if (status
!= NFS_OK
) {
5967 /* Free the stateid unless the server
5968 * informs us the stateid is unrecognized. */
5969 if (status
!= -NFS4ERR_BAD_STATEID
)
5970 nfs41_free_stateid(server
,
5973 clear_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
);
5982 static int nfs41_lock_expired(struct nfs4_state
*state
, struct file_lock
*request
)
5984 int status
= NFS_OK
;
5986 if (test_bit(LK_STATE_IN_USE
, &state
->flags
))
5987 status
= nfs41_check_expired_locks(state
);
5988 if (status
!= NFS_OK
)
5989 status
= nfs4_lock_expired(state
, request
);
5994 static int _nfs4_proc_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
5996 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
5997 unsigned char fl_flags
= request
->fl_flags
;
5998 int status
= -ENOLCK
;
6000 if ((fl_flags
& FL_POSIX
) &&
6001 !test_bit(NFS_STATE_POSIX_LOCKS
, &state
->flags
))
6003 /* Is this a delegated open? */
6004 status
= nfs4_set_lock_state(state
, request
);
6007 request
->fl_flags
|= FL_ACCESS
;
6008 status
= do_vfs_lock(request
->fl_file
, request
);
6011 down_read(&nfsi
->rwsem
);
6012 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
)) {
6013 /* Yes: cache locks! */
6014 /* ...but avoid races with delegation recall... */
6015 request
->fl_flags
= fl_flags
& ~FL_SLEEP
;
6016 status
= do_vfs_lock(request
->fl_file
, request
);
6017 up_read(&nfsi
->rwsem
);
6020 up_read(&nfsi
->rwsem
);
6021 status
= _nfs4_do_setlk(state
, cmd
, request
, NFS_LOCK_NEW
);
6023 request
->fl_flags
= fl_flags
;
6027 static int nfs4_proc_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
6029 struct nfs4_exception exception
= {
6031 .inode
= state
->inode
,
6036 err
= _nfs4_proc_setlk(state
, cmd
, request
);
6037 trace_nfs4_set_lock(request
, state
, cmd
, err
);
6038 if (err
== -NFS4ERR_DENIED
)
6040 err
= nfs4_handle_exception(NFS_SERVER(state
->inode
),
6042 } while (exception
.retry
);
6047 nfs4_proc_lock(struct file
*filp
, int cmd
, struct file_lock
*request
)
6049 struct nfs_open_context
*ctx
;
6050 struct nfs4_state
*state
;
6051 unsigned long timeout
= NFS4_LOCK_MINTIMEOUT
;
6054 /* verify open state */
6055 ctx
= nfs_file_open_context(filp
);
6058 if (request
->fl_start
< 0 || request
->fl_end
< 0)
6061 if (IS_GETLK(cmd
)) {
6063 return nfs4_proc_getlk(state
, F_GETLK
, request
);
6067 if (!(IS_SETLK(cmd
) || IS_SETLKW(cmd
)))
6070 if (request
->fl_type
== F_UNLCK
) {
6072 return nfs4_proc_unlck(state
, cmd
, request
);
6079 * Don't rely on the VFS having checked the file open mode,
6080 * since it won't do this for flock() locks.
6082 switch (request
->fl_type
) {
6084 if (!(filp
->f_mode
& FMODE_READ
))
6088 if (!(filp
->f_mode
& FMODE_WRITE
))
6093 status
= nfs4_proc_setlk(state
, cmd
, request
);
6094 if ((status
!= -EAGAIN
) || IS_SETLK(cmd
))
6096 timeout
= nfs4_set_lock_task_retry(timeout
);
6097 status
= -ERESTARTSYS
;
6100 } while(status
< 0);
6104 int nfs4_lock_delegation_recall(struct file_lock
*fl
, struct nfs4_state
*state
, const nfs4_stateid
*stateid
)
6106 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
6109 err
= nfs4_set_lock_state(state
, fl
);
6112 err
= _nfs4_do_setlk(state
, F_SETLK
, fl
, NFS_LOCK_NEW
);
6113 return nfs4_handle_delegation_recall_error(server
, state
, stateid
, err
);
6116 struct nfs_release_lockowner_data
{
6117 struct nfs4_lock_state
*lsp
;
6118 struct nfs_server
*server
;
6119 struct nfs_release_lockowner_args args
;
6120 struct nfs_release_lockowner_res res
;
6121 unsigned long timestamp
;
6124 static void nfs4_release_lockowner_prepare(struct rpc_task
*task
, void *calldata
)
6126 struct nfs_release_lockowner_data
*data
= calldata
;
6127 struct nfs_server
*server
= data
->server
;
6128 nfs40_setup_sequence(server
->nfs_client
->cl_slot_tbl
,
6129 &data
->args
.seq_args
, &data
->res
.seq_res
, task
);
6130 data
->args
.lock_owner
.clientid
= server
->nfs_client
->cl_clientid
;
6131 data
->timestamp
= jiffies
;
6134 static void nfs4_release_lockowner_done(struct rpc_task
*task
, void *calldata
)
6136 struct nfs_release_lockowner_data
*data
= calldata
;
6137 struct nfs_server
*server
= data
->server
;
6139 nfs40_sequence_done(task
, &data
->res
.seq_res
);
6141 switch (task
->tk_status
) {
6143 renew_lease(server
, data
->timestamp
);
6145 case -NFS4ERR_STALE_CLIENTID
:
6146 case -NFS4ERR_EXPIRED
:
6147 nfs4_schedule_lease_recovery(server
->nfs_client
);
6149 case -NFS4ERR_LEASE_MOVED
:
6150 case -NFS4ERR_DELAY
:
6151 if (nfs4_async_handle_error(task
, server
,
6152 NULL
, NULL
) == -EAGAIN
)
6153 rpc_restart_call_prepare(task
);
6157 static void nfs4_release_lockowner_release(void *calldata
)
6159 struct nfs_release_lockowner_data
*data
= calldata
;
6160 nfs4_free_lock_state(data
->server
, data
->lsp
);
6164 static const struct rpc_call_ops nfs4_release_lockowner_ops
= {
6165 .rpc_call_prepare
= nfs4_release_lockowner_prepare
,
6166 .rpc_call_done
= nfs4_release_lockowner_done
,
6167 .rpc_release
= nfs4_release_lockowner_release
,
6171 nfs4_release_lockowner(struct nfs_server
*server
, struct nfs4_lock_state
*lsp
)
6173 struct nfs_release_lockowner_data
*data
;
6174 struct rpc_message msg
= {
6175 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RELEASE_LOCKOWNER
],
6178 if (server
->nfs_client
->cl_mvops
->minor_version
!= 0)
6181 data
= kmalloc(sizeof(*data
), GFP_NOFS
);
6185 data
->server
= server
;
6186 data
->args
.lock_owner
.clientid
= server
->nfs_client
->cl_clientid
;
6187 data
->args
.lock_owner
.id
= lsp
->ls_seqid
.owner_id
;
6188 data
->args
.lock_owner
.s_dev
= server
->s_dev
;
6190 msg
.rpc_argp
= &data
->args
;
6191 msg
.rpc_resp
= &data
->res
;
6192 nfs4_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 0);
6193 rpc_call_async(server
->client
, &msg
, 0, &nfs4_release_lockowner_ops
, data
);
6196 #define XATTR_NAME_NFSV4_ACL "system.nfs4_acl"
6198 static int nfs4_xattr_set_nfs4_acl(struct dentry
*dentry
, const char *key
,
6199 const void *buf
, size_t buflen
,
6200 int flags
, int type
)
6202 if (strcmp(key
, "") != 0)
6205 return nfs4_proc_set_acl(d_inode(dentry
), buf
, buflen
);
6208 static int nfs4_xattr_get_nfs4_acl(struct dentry
*dentry
, const char *key
,
6209 void *buf
, size_t buflen
, int type
)
6211 if (strcmp(key
, "") != 0)
6214 return nfs4_proc_get_acl(d_inode(dentry
), buf
, buflen
);
6217 static size_t nfs4_xattr_list_nfs4_acl(struct dentry
*dentry
, char *list
,
6218 size_t list_len
, const char *name
,
6219 size_t name_len
, int type
)
6221 size_t len
= sizeof(XATTR_NAME_NFSV4_ACL
);
6223 if (!nfs4_server_supports_acls(NFS_SERVER(d_inode(dentry
))))
6226 if (list
&& len
<= list_len
)
6227 memcpy(list
, XATTR_NAME_NFSV4_ACL
, len
);
6231 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
6232 static inline int nfs4_server_supports_labels(struct nfs_server
*server
)
6234 return server
->caps
& NFS_CAP_SECURITY_LABEL
;
6237 static int nfs4_xattr_set_nfs4_label(struct dentry
*dentry
, const char *key
,
6238 const void *buf
, size_t buflen
,
6239 int flags
, int type
)
6241 if (security_ismaclabel(key
))
6242 return nfs4_set_security_label(dentry
, buf
, buflen
);
6247 static int nfs4_xattr_get_nfs4_label(struct dentry
*dentry
, const char *key
,
6248 void *buf
, size_t buflen
, int type
)
6250 if (security_ismaclabel(key
))
6251 return nfs4_get_security_label(d_inode(dentry
), buf
, buflen
);
6255 static size_t nfs4_xattr_list_nfs4_label(struct dentry
*dentry
, char *list
,
6256 size_t list_len
, const char *name
,
6257 size_t name_len
, int type
)
6261 if (nfs_server_capable(d_inode(dentry
), NFS_CAP_SECURITY_LABEL
)) {
6262 len
= security_inode_listsecurity(d_inode(dentry
), NULL
, 0);
6263 if (list
&& len
<= list_len
)
6264 security_inode_listsecurity(d_inode(dentry
), list
, len
);
6269 static const struct xattr_handler nfs4_xattr_nfs4_label_handler
= {
6270 .prefix
= XATTR_SECURITY_PREFIX
,
6271 .list
= nfs4_xattr_list_nfs4_label
,
6272 .get
= nfs4_xattr_get_nfs4_label
,
6273 .set
= nfs4_xattr_set_nfs4_label
,
6279 * nfs_fhget will use either the mounted_on_fileid or the fileid
6281 static void nfs_fixup_referral_attributes(struct nfs_fattr
*fattr
)
6283 if (!(((fattr
->valid
& NFS_ATTR_FATTR_MOUNTED_ON_FILEID
) ||
6284 (fattr
->valid
& NFS_ATTR_FATTR_FILEID
)) &&
6285 (fattr
->valid
& NFS_ATTR_FATTR_FSID
) &&
6286 (fattr
->valid
& NFS_ATTR_FATTR_V4_LOCATIONS
)))
6289 fattr
->valid
|= NFS_ATTR_FATTR_TYPE
| NFS_ATTR_FATTR_MODE
|
6290 NFS_ATTR_FATTR_NLINK
| NFS_ATTR_FATTR_V4_REFERRAL
;
6291 fattr
->mode
= S_IFDIR
| S_IRUGO
| S_IXUGO
;
6295 static int _nfs4_proc_fs_locations(struct rpc_clnt
*client
, struct inode
*dir
,
6296 const struct qstr
*name
,
6297 struct nfs4_fs_locations
*fs_locations
,
6300 struct nfs_server
*server
= NFS_SERVER(dir
);
6302 [0] = FATTR4_WORD0_FSID
| FATTR4_WORD0_FS_LOCATIONS
,
6304 struct nfs4_fs_locations_arg args
= {
6305 .dir_fh
= NFS_FH(dir
),
6310 struct nfs4_fs_locations_res res
= {
6311 .fs_locations
= fs_locations
,
6313 struct rpc_message msg
= {
6314 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FS_LOCATIONS
],
6320 dprintk("%s: start\n", __func__
);
6322 /* Ask for the fileid of the absent filesystem if mounted_on_fileid
6323 * is not supported */
6324 if (NFS_SERVER(dir
)->attr_bitmask
[1] & FATTR4_WORD1_MOUNTED_ON_FILEID
)
6325 bitmask
[1] |= FATTR4_WORD1_MOUNTED_ON_FILEID
;
6327 bitmask
[0] |= FATTR4_WORD0_FILEID
;
6329 nfs_fattr_init(&fs_locations
->fattr
);
6330 fs_locations
->server
= server
;
6331 fs_locations
->nlocations
= 0;
6332 status
= nfs4_call_sync(client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
6333 dprintk("%s: returned status = %d\n", __func__
, status
);
6337 int nfs4_proc_fs_locations(struct rpc_clnt
*client
, struct inode
*dir
,
6338 const struct qstr
*name
,
6339 struct nfs4_fs_locations
*fs_locations
,
6342 struct nfs4_exception exception
= { };
6345 err
= _nfs4_proc_fs_locations(client
, dir
, name
,
6346 fs_locations
, page
);
6347 trace_nfs4_get_fs_locations(dir
, name
, err
);
6348 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
6350 } while (exception
.retry
);
6355 * This operation also signals the server that this client is
6356 * performing migration recovery. The server can stop returning
6357 * NFS4ERR_LEASE_MOVED to this client. A RENEW operation is
6358 * appended to this compound to identify the client ID which is
6359 * performing recovery.
6361 static int _nfs40_proc_get_locations(struct inode
*inode
,
6362 struct nfs4_fs_locations
*locations
,
6363 struct page
*page
, struct rpc_cred
*cred
)
6365 struct nfs_server
*server
= NFS_SERVER(inode
);
6366 struct rpc_clnt
*clnt
= server
->client
;
6368 [0] = FATTR4_WORD0_FSID
| FATTR4_WORD0_FS_LOCATIONS
,
6370 struct nfs4_fs_locations_arg args
= {
6371 .clientid
= server
->nfs_client
->cl_clientid
,
6372 .fh
= NFS_FH(inode
),
6375 .migration
= 1, /* skip LOOKUP */
6376 .renew
= 1, /* append RENEW */
6378 struct nfs4_fs_locations_res res
= {
6379 .fs_locations
= locations
,
6383 struct rpc_message msg
= {
6384 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FS_LOCATIONS
],
6389 unsigned long now
= jiffies
;
6392 nfs_fattr_init(&locations
->fattr
);
6393 locations
->server
= server
;
6394 locations
->nlocations
= 0;
6396 nfs4_init_sequence(&args
.seq_args
, &res
.seq_res
, 0);
6397 nfs4_set_sequence_privileged(&args
.seq_args
);
6398 status
= nfs4_call_sync_sequence(clnt
, server
, &msg
,
6399 &args
.seq_args
, &res
.seq_res
);
6403 renew_lease(server
, now
);
6407 #ifdef CONFIG_NFS_V4_1
6410 * This operation also signals the server that this client is
6411 * performing migration recovery. The server can stop asserting
6412 * SEQ4_STATUS_LEASE_MOVED for this client. The client ID
6413 * performing this operation is identified in the SEQUENCE
6414 * operation in this compound.
6416 * When the client supports GETATTR(fs_locations_info), it can
6417 * be plumbed in here.
6419 static int _nfs41_proc_get_locations(struct inode
*inode
,
6420 struct nfs4_fs_locations
*locations
,
6421 struct page
*page
, struct rpc_cred
*cred
)
6423 struct nfs_server
*server
= NFS_SERVER(inode
);
6424 struct rpc_clnt
*clnt
= server
->client
;
6426 [0] = FATTR4_WORD0_FSID
| FATTR4_WORD0_FS_LOCATIONS
,
6428 struct nfs4_fs_locations_arg args
= {
6429 .fh
= NFS_FH(inode
),
6432 .migration
= 1, /* skip LOOKUP */
6434 struct nfs4_fs_locations_res res
= {
6435 .fs_locations
= locations
,
6438 struct rpc_message msg
= {
6439 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FS_LOCATIONS
],
6446 nfs_fattr_init(&locations
->fattr
);
6447 locations
->server
= server
;
6448 locations
->nlocations
= 0;
6450 nfs4_init_sequence(&args
.seq_args
, &res
.seq_res
, 0);
6451 nfs4_set_sequence_privileged(&args
.seq_args
);
6452 status
= nfs4_call_sync_sequence(clnt
, server
, &msg
,
6453 &args
.seq_args
, &res
.seq_res
);
6454 if (status
== NFS4_OK
&&
6455 res
.seq_res
.sr_status_flags
& SEQ4_STATUS_LEASE_MOVED
)
6456 status
= -NFS4ERR_LEASE_MOVED
;
6460 #endif /* CONFIG_NFS_V4_1 */
6463 * nfs4_proc_get_locations - discover locations for a migrated FSID
6464 * @inode: inode on FSID that is migrating
6465 * @locations: result of query
6467 * @cred: credential to use for this operation
6469 * Returns NFS4_OK on success, a negative NFS4ERR status code if the
6470 * operation failed, or a negative errno if a local error occurred.
6472 * On success, "locations" is filled in, but if the server has
6473 * no locations information, NFS_ATTR_FATTR_V4_LOCATIONS is not
6476 * -NFS4ERR_LEASE_MOVED is returned if the server still has leases
6477 * from this client that require migration recovery.
6479 int nfs4_proc_get_locations(struct inode
*inode
,
6480 struct nfs4_fs_locations
*locations
,
6481 struct page
*page
, struct rpc_cred
*cred
)
6483 struct nfs_server
*server
= NFS_SERVER(inode
);
6484 struct nfs_client
*clp
= server
->nfs_client
;
6485 const struct nfs4_mig_recovery_ops
*ops
=
6486 clp
->cl_mvops
->mig_recovery_ops
;
6487 struct nfs4_exception exception
= { };
6490 dprintk("%s: FSID %llx:%llx on \"%s\"\n", __func__
,
6491 (unsigned long long)server
->fsid
.major
,
6492 (unsigned long long)server
->fsid
.minor
,
6494 nfs_display_fhandle(NFS_FH(inode
), __func__
);
6497 status
= ops
->get_locations(inode
, locations
, page
, cred
);
6498 if (status
!= -NFS4ERR_DELAY
)
6500 nfs4_handle_exception(server
, status
, &exception
);
6501 } while (exception
.retry
);
6506 * This operation also signals the server that this client is
6507 * performing "lease moved" recovery. The server can stop
6508 * returning NFS4ERR_LEASE_MOVED to this client. A RENEW operation
6509 * is appended to this compound to identify the client ID which is
6510 * performing recovery.
6512 static int _nfs40_proc_fsid_present(struct inode
*inode
, struct rpc_cred
*cred
)
6514 struct nfs_server
*server
= NFS_SERVER(inode
);
6515 struct nfs_client
*clp
= NFS_SERVER(inode
)->nfs_client
;
6516 struct rpc_clnt
*clnt
= server
->client
;
6517 struct nfs4_fsid_present_arg args
= {
6518 .fh
= NFS_FH(inode
),
6519 .clientid
= clp
->cl_clientid
,
6520 .renew
= 1, /* append RENEW */
6522 struct nfs4_fsid_present_res res
= {
6525 struct rpc_message msg
= {
6526 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FSID_PRESENT
],
6531 unsigned long now
= jiffies
;
6534 res
.fh
= nfs_alloc_fhandle();
6538 nfs4_init_sequence(&args
.seq_args
, &res
.seq_res
, 0);
6539 nfs4_set_sequence_privileged(&args
.seq_args
);
6540 status
= nfs4_call_sync_sequence(clnt
, server
, &msg
,
6541 &args
.seq_args
, &res
.seq_res
);
6542 nfs_free_fhandle(res
.fh
);
6546 do_renew_lease(clp
, now
);
6550 #ifdef CONFIG_NFS_V4_1
6553 * This operation also signals the server that this client is
6554 * performing "lease moved" recovery. The server can stop asserting
6555 * SEQ4_STATUS_LEASE_MOVED for this client. The client ID performing
6556 * this operation is identified in the SEQUENCE operation in this
6559 static int _nfs41_proc_fsid_present(struct inode
*inode
, struct rpc_cred
*cred
)
6561 struct nfs_server
*server
= NFS_SERVER(inode
);
6562 struct rpc_clnt
*clnt
= server
->client
;
6563 struct nfs4_fsid_present_arg args
= {
6564 .fh
= NFS_FH(inode
),
6566 struct nfs4_fsid_present_res res
= {
6568 struct rpc_message msg
= {
6569 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FSID_PRESENT
],
6576 res
.fh
= nfs_alloc_fhandle();
6580 nfs4_init_sequence(&args
.seq_args
, &res
.seq_res
, 0);
6581 nfs4_set_sequence_privileged(&args
.seq_args
);
6582 status
= nfs4_call_sync_sequence(clnt
, server
, &msg
,
6583 &args
.seq_args
, &res
.seq_res
);
6584 nfs_free_fhandle(res
.fh
);
6585 if (status
== NFS4_OK
&&
6586 res
.seq_res
.sr_status_flags
& SEQ4_STATUS_LEASE_MOVED
)
6587 status
= -NFS4ERR_LEASE_MOVED
;
6591 #endif /* CONFIG_NFS_V4_1 */
6594 * nfs4_proc_fsid_present - Is this FSID present or absent on server?
6595 * @inode: inode on FSID to check
6596 * @cred: credential to use for this operation
6598 * Server indicates whether the FSID is present, moved, or not
6599 * recognized. This operation is necessary to clear a LEASE_MOVED
6600 * condition for this client ID.
6602 * Returns NFS4_OK if the FSID is present on this server,
6603 * -NFS4ERR_MOVED if the FSID is no longer present, a negative
6604 * NFS4ERR code if some error occurred on the server, or a
6605 * negative errno if a local failure occurred.
6607 int nfs4_proc_fsid_present(struct inode
*inode
, struct rpc_cred
*cred
)
6609 struct nfs_server
*server
= NFS_SERVER(inode
);
6610 struct nfs_client
*clp
= server
->nfs_client
;
6611 const struct nfs4_mig_recovery_ops
*ops
=
6612 clp
->cl_mvops
->mig_recovery_ops
;
6613 struct nfs4_exception exception
= { };
6616 dprintk("%s: FSID %llx:%llx on \"%s\"\n", __func__
,
6617 (unsigned long long)server
->fsid
.major
,
6618 (unsigned long long)server
->fsid
.minor
,
6620 nfs_display_fhandle(NFS_FH(inode
), __func__
);
6623 status
= ops
->fsid_present(inode
, cred
);
6624 if (status
!= -NFS4ERR_DELAY
)
6626 nfs4_handle_exception(server
, status
, &exception
);
6627 } while (exception
.retry
);
6632 * If 'use_integrity' is true and the state managment nfs_client
6633 * cl_rpcclient is using krb5i/p, use the integrity protected cl_rpcclient
6634 * and the machine credential as per RFC3530bis and RFC5661 Security
6635 * Considerations sections. Otherwise, just use the user cred with the
6636 * filesystem's rpc_client.
6638 static int _nfs4_proc_secinfo(struct inode
*dir
, const struct qstr
*name
, struct nfs4_secinfo_flavors
*flavors
, bool use_integrity
)
6641 struct nfs4_secinfo_arg args
= {
6642 .dir_fh
= NFS_FH(dir
),
6645 struct nfs4_secinfo_res res
= {
6648 struct rpc_message msg
= {
6649 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SECINFO
],
6653 struct rpc_clnt
*clnt
= NFS_SERVER(dir
)->client
;
6654 struct rpc_cred
*cred
= NULL
;
6656 if (use_integrity
) {
6657 clnt
= NFS_SERVER(dir
)->nfs_client
->cl_rpcclient
;
6658 cred
= nfs4_get_clid_cred(NFS_SERVER(dir
)->nfs_client
);
6659 msg
.rpc_cred
= cred
;
6662 dprintk("NFS call secinfo %s\n", name
->name
);
6664 nfs4_state_protect(NFS_SERVER(dir
)->nfs_client
,
6665 NFS_SP4_MACH_CRED_SECINFO
, &clnt
, &msg
);
6667 status
= nfs4_call_sync(clnt
, NFS_SERVER(dir
), &msg
, &args
.seq_args
,
6669 dprintk("NFS reply secinfo: %d\n", status
);
6677 int nfs4_proc_secinfo(struct inode
*dir
, const struct qstr
*name
,
6678 struct nfs4_secinfo_flavors
*flavors
)
6680 struct nfs4_exception exception
= { };
6683 err
= -NFS4ERR_WRONGSEC
;
6685 /* try to use integrity protection with machine cred */
6686 if (_nfs4_is_integrity_protected(NFS_SERVER(dir
)->nfs_client
))
6687 err
= _nfs4_proc_secinfo(dir
, name
, flavors
, true);
6690 * if unable to use integrity protection, or SECINFO with
6691 * integrity protection returns NFS4ERR_WRONGSEC (which is
6692 * disallowed by spec, but exists in deployed servers) use
6693 * the current filesystem's rpc_client and the user cred.
6695 if (err
== -NFS4ERR_WRONGSEC
)
6696 err
= _nfs4_proc_secinfo(dir
, name
, flavors
, false);
6698 trace_nfs4_secinfo(dir
, name
, err
);
6699 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
6701 } while (exception
.retry
);
6705 #ifdef CONFIG_NFS_V4_1
6707 * Check the exchange flags returned by the server for invalid flags, having
6708 * both PNFS and NON_PNFS flags set, and not having one of NON_PNFS, PNFS, or
6711 static int nfs4_check_cl_exchange_flags(u32 flags
)
6713 if (flags
& ~EXCHGID4_FLAG_MASK_R
)
6715 if ((flags
& EXCHGID4_FLAG_USE_PNFS_MDS
) &&
6716 (flags
& EXCHGID4_FLAG_USE_NON_PNFS
))
6718 if (!(flags
& (EXCHGID4_FLAG_MASK_PNFS
)))
6722 return -NFS4ERR_INVAL
;
6726 nfs41_same_server_scope(struct nfs41_server_scope
*a
,
6727 struct nfs41_server_scope
*b
)
6729 if (a
->server_scope_sz
== b
->server_scope_sz
&&
6730 memcmp(a
->server_scope
, b
->server_scope
, a
->server_scope_sz
) == 0)
6737 * nfs4_proc_bind_conn_to_session()
6739 * The 4.1 client currently uses the same TCP connection for the
6740 * fore and backchannel.
6742 int nfs4_proc_bind_conn_to_session(struct nfs_client
*clp
, struct rpc_cred
*cred
)
6745 struct nfs41_bind_conn_to_session_args args
= {
6747 .dir
= NFS4_CDFC4_FORE_OR_BOTH
,
6749 struct nfs41_bind_conn_to_session_res res
;
6750 struct rpc_message msg
= {
6752 &nfs4_procedures
[NFSPROC4_CLNT_BIND_CONN_TO_SESSION
],
6758 dprintk("--> %s\n", __func__
);
6760 nfs4_copy_sessionid(&args
.sessionid
, &clp
->cl_session
->sess_id
);
6761 if (!(clp
->cl_session
->flags
& SESSION4_BACK_CHAN
))
6762 args
.dir
= NFS4_CDFC4_FORE
;
6764 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
6765 trace_nfs4_bind_conn_to_session(clp
, status
);
6767 if (memcmp(res
.sessionid
.data
,
6768 clp
->cl_session
->sess_id
.data
, NFS4_MAX_SESSIONID_LEN
)) {
6769 dprintk("NFS: %s: Session ID mismatch\n", __func__
);
6773 if ((res
.dir
& args
.dir
) != res
.dir
|| res
.dir
== 0) {
6774 dprintk("NFS: %s: Unexpected direction from server\n",
6779 if (res
.use_conn_in_rdma_mode
!= args
.use_conn_in_rdma_mode
) {
6780 dprintk("NFS: %s: Server returned RDMA mode = true\n",
6787 dprintk("<-- %s status= %d\n", __func__
, status
);
6792 * Minimum set of SP4_MACH_CRED operations from RFC 5661 in the enforce map
6793 * and operations we'd like to see to enable certain features in the allow map
6795 static const struct nfs41_state_protection nfs4_sp4_mach_cred_request
= {
6796 .how
= SP4_MACH_CRED
,
6797 .enforce
.u
.words
= {
6798 [1] = 1 << (OP_BIND_CONN_TO_SESSION
- 32) |
6799 1 << (OP_EXCHANGE_ID
- 32) |
6800 1 << (OP_CREATE_SESSION
- 32) |
6801 1 << (OP_DESTROY_SESSION
- 32) |
6802 1 << (OP_DESTROY_CLIENTID
- 32)
6805 [0] = 1 << (OP_CLOSE
) |
6808 [1] = 1 << (OP_SECINFO
- 32) |
6809 1 << (OP_SECINFO_NO_NAME
- 32) |
6810 1 << (OP_TEST_STATEID
- 32) |
6811 1 << (OP_FREE_STATEID
- 32) |
6812 1 << (OP_WRITE
- 32)
6817 * Select the state protection mode for client `clp' given the server results
6818 * from exchange_id in `sp'.
6820 * Returns 0 on success, negative errno otherwise.
6822 static int nfs4_sp4_select_mode(struct nfs_client
*clp
,
6823 struct nfs41_state_protection
*sp
)
6825 static const u32 supported_enforce
[NFS4_OP_MAP_NUM_WORDS
] = {
6826 [1] = 1 << (OP_BIND_CONN_TO_SESSION
- 32) |
6827 1 << (OP_EXCHANGE_ID
- 32) |
6828 1 << (OP_CREATE_SESSION
- 32) |
6829 1 << (OP_DESTROY_SESSION
- 32) |
6830 1 << (OP_DESTROY_CLIENTID
- 32)
6834 if (sp
->how
== SP4_MACH_CRED
) {
6835 /* Print state protect result */
6836 dfprintk(MOUNT
, "Server SP4_MACH_CRED support:\n");
6837 for (i
= 0; i
<= LAST_NFS4_OP
; i
++) {
6838 if (test_bit(i
, sp
->enforce
.u
.longs
))
6839 dfprintk(MOUNT
, " enforce op %d\n", i
);
6840 if (test_bit(i
, sp
->allow
.u
.longs
))
6841 dfprintk(MOUNT
, " allow op %d\n", i
);
6844 /* make sure nothing is on enforce list that isn't supported */
6845 for (i
= 0; i
< NFS4_OP_MAP_NUM_WORDS
; i
++) {
6846 if (sp
->enforce
.u
.words
[i
] & ~supported_enforce
[i
]) {
6847 dfprintk(MOUNT
, "sp4_mach_cred: disabled\n");
6853 * Minimal mode - state operations are allowed to use machine
6854 * credential. Note this already happens by default, so the
6855 * client doesn't have to do anything more than the negotiation.
6857 * NOTE: we don't care if EXCHANGE_ID is in the list -
6858 * we're already using the machine cred for exchange_id
6859 * and will never use a different cred.
6861 if (test_bit(OP_BIND_CONN_TO_SESSION
, sp
->enforce
.u
.longs
) &&
6862 test_bit(OP_CREATE_SESSION
, sp
->enforce
.u
.longs
) &&
6863 test_bit(OP_DESTROY_SESSION
, sp
->enforce
.u
.longs
) &&
6864 test_bit(OP_DESTROY_CLIENTID
, sp
->enforce
.u
.longs
)) {
6865 dfprintk(MOUNT
, "sp4_mach_cred:\n");
6866 dfprintk(MOUNT
, " minimal mode enabled\n");
6867 set_bit(NFS_SP4_MACH_CRED_MINIMAL
, &clp
->cl_sp4_flags
);
6869 dfprintk(MOUNT
, "sp4_mach_cred: disabled\n");
6873 if (test_bit(OP_CLOSE
, sp
->allow
.u
.longs
) &&
6874 test_bit(OP_LOCKU
, sp
->allow
.u
.longs
)) {
6875 dfprintk(MOUNT
, " cleanup mode enabled\n");
6876 set_bit(NFS_SP4_MACH_CRED_CLEANUP
, &clp
->cl_sp4_flags
);
6879 if (test_bit(OP_SECINFO
, sp
->allow
.u
.longs
) &&
6880 test_bit(OP_SECINFO_NO_NAME
, sp
->allow
.u
.longs
)) {
6881 dfprintk(MOUNT
, " secinfo mode enabled\n");
6882 set_bit(NFS_SP4_MACH_CRED_SECINFO
, &clp
->cl_sp4_flags
);
6885 if (test_bit(OP_TEST_STATEID
, sp
->allow
.u
.longs
) &&
6886 test_bit(OP_FREE_STATEID
, sp
->allow
.u
.longs
)) {
6887 dfprintk(MOUNT
, " stateid mode enabled\n");
6888 set_bit(NFS_SP4_MACH_CRED_STATEID
, &clp
->cl_sp4_flags
);
6891 if (test_bit(OP_WRITE
, sp
->allow
.u
.longs
)) {
6892 dfprintk(MOUNT
, " write mode enabled\n");
6893 set_bit(NFS_SP4_MACH_CRED_WRITE
, &clp
->cl_sp4_flags
);
6896 if (test_bit(OP_COMMIT
, sp
->allow
.u
.longs
)) {
6897 dfprintk(MOUNT
, " commit mode enabled\n");
6898 set_bit(NFS_SP4_MACH_CRED_COMMIT
, &clp
->cl_sp4_flags
);
6906 * _nfs4_proc_exchange_id()
6908 * Wrapper for EXCHANGE_ID operation.
6910 static int _nfs4_proc_exchange_id(struct nfs_client
*clp
, struct rpc_cred
*cred
,
6913 nfs4_verifier verifier
;
6914 struct nfs41_exchange_id_args args
= {
6915 .verifier
= &verifier
,
6917 #ifdef CONFIG_NFS_V4_1_MIGRATION
6918 .flags
= EXCHGID4_FLAG_SUPP_MOVED_REFER
|
6919 EXCHGID4_FLAG_BIND_PRINC_STATEID
|
6920 EXCHGID4_FLAG_SUPP_MOVED_MIGR
,
6922 .flags
= EXCHGID4_FLAG_SUPP_MOVED_REFER
|
6923 EXCHGID4_FLAG_BIND_PRINC_STATEID
,
6926 struct nfs41_exchange_id_res res
= {
6930 struct rpc_message msg
= {
6931 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_EXCHANGE_ID
],
6937 nfs4_init_boot_verifier(clp
, &verifier
);
6939 status
= nfs4_init_uniform_client_string(clp
);
6943 dprintk("NFS call exchange_id auth=%s, '%s'\n",
6944 clp
->cl_rpcclient
->cl_auth
->au_ops
->au_name
,
6947 res
.server_owner
= kzalloc(sizeof(struct nfs41_server_owner
),
6949 if (unlikely(res
.server_owner
== NULL
)) {
6954 res
.server_scope
= kzalloc(sizeof(struct nfs41_server_scope
),
6956 if (unlikely(res
.server_scope
== NULL
)) {
6958 goto out_server_owner
;
6961 res
.impl_id
= kzalloc(sizeof(struct nfs41_impl_id
), GFP_NOFS
);
6962 if (unlikely(res
.impl_id
== NULL
)) {
6964 goto out_server_scope
;
6969 args
.state_protect
.how
= SP4_NONE
;
6973 args
.state_protect
= nfs4_sp4_mach_cred_request
;
6983 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
6984 trace_nfs4_exchange_id(clp
, status
);
6986 status
= nfs4_check_cl_exchange_flags(res
.flags
);
6989 status
= nfs4_sp4_select_mode(clp
, &res
.state_protect
);
6992 clp
->cl_clientid
= res
.clientid
;
6993 clp
->cl_exchange_flags
= res
.flags
;
6994 /* Client ID is not confirmed */
6995 if (!(res
.flags
& EXCHGID4_FLAG_CONFIRMED_R
)) {
6996 clear_bit(NFS4_SESSION_ESTABLISHED
,
6997 &clp
->cl_session
->session_state
);
6998 clp
->cl_seqid
= res
.seqid
;
7001 kfree(clp
->cl_serverowner
);
7002 clp
->cl_serverowner
= res
.server_owner
;
7003 res
.server_owner
= NULL
;
7005 /* use the most recent implementation id */
7006 kfree(clp
->cl_implid
);
7007 clp
->cl_implid
= res
.impl_id
;
7010 if (clp
->cl_serverscope
!= NULL
&&
7011 !nfs41_same_server_scope(clp
->cl_serverscope
,
7012 res
.server_scope
)) {
7013 dprintk("%s: server_scope mismatch detected\n",
7015 set_bit(NFS4CLNT_SERVER_SCOPE_MISMATCH
, &clp
->cl_state
);
7016 kfree(clp
->cl_serverscope
);
7017 clp
->cl_serverscope
= NULL
;
7020 if (clp
->cl_serverscope
== NULL
) {
7021 clp
->cl_serverscope
= res
.server_scope
;
7022 res
.server_scope
= NULL
;
7029 kfree(res
.server_scope
);
7031 kfree(res
.server_owner
);
7033 if (clp
->cl_implid
!= NULL
)
7034 dprintk("NFS reply exchange_id: Server Implementation ID: "
7035 "domain: %s, name: %s, date: %llu,%u\n",
7036 clp
->cl_implid
->domain
, clp
->cl_implid
->name
,
7037 clp
->cl_implid
->date
.seconds
,
7038 clp
->cl_implid
->date
.nseconds
);
7039 dprintk("NFS reply exchange_id: %d\n", status
);
7044 * nfs4_proc_exchange_id()
7046 * Returns zero, a negative errno, or a negative NFS4ERR status code.
7048 * Since the clientid has expired, all compounds using sessions
7049 * associated with the stale clientid will be returning
7050 * NFS4ERR_BADSESSION in the sequence operation, and will therefore
7051 * be in some phase of session reset.
7053 * Will attempt to negotiate SP4_MACH_CRED if krb5i / krb5p auth is used.
7055 int nfs4_proc_exchange_id(struct nfs_client
*clp
, struct rpc_cred
*cred
)
7057 rpc_authflavor_t authflavor
= clp
->cl_rpcclient
->cl_auth
->au_flavor
;
7060 /* try SP4_MACH_CRED if krb5i/p */
7061 if (authflavor
== RPC_AUTH_GSS_KRB5I
||
7062 authflavor
== RPC_AUTH_GSS_KRB5P
) {
7063 status
= _nfs4_proc_exchange_id(clp
, cred
, SP4_MACH_CRED
);
7069 return _nfs4_proc_exchange_id(clp
, cred
, SP4_NONE
);
7072 static int _nfs4_proc_destroy_clientid(struct nfs_client
*clp
,
7073 struct rpc_cred
*cred
)
7075 struct rpc_message msg
= {
7076 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DESTROY_CLIENTID
],
7082 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
7083 trace_nfs4_destroy_clientid(clp
, status
);
7085 dprintk("NFS: Got error %d from the server %s on "
7086 "DESTROY_CLIENTID.", status
, clp
->cl_hostname
);
7090 static int nfs4_proc_destroy_clientid(struct nfs_client
*clp
,
7091 struct rpc_cred
*cred
)
7096 for (loop
= NFS4_MAX_LOOP_ON_RECOVER
; loop
!= 0; loop
--) {
7097 ret
= _nfs4_proc_destroy_clientid(clp
, cred
);
7099 case -NFS4ERR_DELAY
:
7100 case -NFS4ERR_CLIENTID_BUSY
:
7110 int nfs4_destroy_clientid(struct nfs_client
*clp
)
7112 struct rpc_cred
*cred
;
7115 if (clp
->cl_mvops
->minor_version
< 1)
7117 if (clp
->cl_exchange_flags
== 0)
7119 if (clp
->cl_preserve_clid
)
7121 cred
= nfs4_get_clid_cred(clp
);
7122 ret
= nfs4_proc_destroy_clientid(clp
, cred
);
7127 case -NFS4ERR_STALE_CLIENTID
:
7128 clp
->cl_exchange_flags
= 0;
7134 struct nfs4_get_lease_time_data
{
7135 struct nfs4_get_lease_time_args
*args
;
7136 struct nfs4_get_lease_time_res
*res
;
7137 struct nfs_client
*clp
;
7140 static void nfs4_get_lease_time_prepare(struct rpc_task
*task
,
7143 struct nfs4_get_lease_time_data
*data
=
7144 (struct nfs4_get_lease_time_data
*)calldata
;
7146 dprintk("--> %s\n", __func__
);
7147 /* just setup sequence, do not trigger session recovery
7148 since we're invoked within one */
7149 nfs41_setup_sequence(data
->clp
->cl_session
,
7150 &data
->args
->la_seq_args
,
7151 &data
->res
->lr_seq_res
,
7153 dprintk("<-- %s\n", __func__
);
7157 * Called from nfs4_state_manager thread for session setup, so don't recover
7158 * from sequence operation or clientid errors.
7160 static void nfs4_get_lease_time_done(struct rpc_task
*task
, void *calldata
)
7162 struct nfs4_get_lease_time_data
*data
=
7163 (struct nfs4_get_lease_time_data
*)calldata
;
7165 dprintk("--> %s\n", __func__
);
7166 if (!nfs41_sequence_done(task
, &data
->res
->lr_seq_res
))
7168 switch (task
->tk_status
) {
7169 case -NFS4ERR_DELAY
:
7170 case -NFS4ERR_GRACE
:
7171 dprintk("%s Retry: tk_status %d\n", __func__
, task
->tk_status
);
7172 rpc_delay(task
, NFS4_POLL_RETRY_MIN
);
7173 task
->tk_status
= 0;
7175 case -NFS4ERR_RETRY_UNCACHED_REP
:
7176 rpc_restart_call_prepare(task
);
7179 dprintk("<-- %s\n", __func__
);
7182 static const struct rpc_call_ops nfs4_get_lease_time_ops
= {
7183 .rpc_call_prepare
= nfs4_get_lease_time_prepare
,
7184 .rpc_call_done
= nfs4_get_lease_time_done
,
7187 int nfs4_proc_get_lease_time(struct nfs_client
*clp
, struct nfs_fsinfo
*fsinfo
)
7189 struct rpc_task
*task
;
7190 struct nfs4_get_lease_time_args args
;
7191 struct nfs4_get_lease_time_res res
= {
7192 .lr_fsinfo
= fsinfo
,
7194 struct nfs4_get_lease_time_data data
= {
7199 struct rpc_message msg
= {
7200 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GET_LEASE_TIME
],
7204 struct rpc_task_setup task_setup
= {
7205 .rpc_client
= clp
->cl_rpcclient
,
7206 .rpc_message
= &msg
,
7207 .callback_ops
= &nfs4_get_lease_time_ops
,
7208 .callback_data
= &data
,
7209 .flags
= RPC_TASK_TIMEOUT
,
7213 nfs4_init_sequence(&args
.la_seq_args
, &res
.lr_seq_res
, 0);
7214 nfs4_set_sequence_privileged(&args
.la_seq_args
);
7215 dprintk("--> %s\n", __func__
);
7216 task
= rpc_run_task(&task_setup
);
7219 status
= PTR_ERR(task
);
7221 status
= task
->tk_status
;
7224 dprintk("<-- %s return %d\n", __func__
, status
);
7230 * Initialize the values to be used by the client in CREATE_SESSION
7231 * If nfs4_init_session set the fore channel request and response sizes,
7234 * Set the back channel max_resp_sz_cached to zero to force the client to
7235 * always set csa_cachethis to FALSE because the current implementation
7236 * of the back channel DRC only supports caching the CB_SEQUENCE operation.
7238 static void nfs4_init_channel_attrs(struct nfs41_create_session_args
*args
)
7240 unsigned int max_rqst_sz
, max_resp_sz
;
7242 max_rqst_sz
= NFS_MAX_FILE_IO_SIZE
+ nfs41_maxwrite_overhead
;
7243 max_resp_sz
= NFS_MAX_FILE_IO_SIZE
+ nfs41_maxread_overhead
;
7245 /* Fore channel attributes */
7246 args
->fc_attrs
.max_rqst_sz
= max_rqst_sz
;
7247 args
->fc_attrs
.max_resp_sz
= max_resp_sz
;
7248 args
->fc_attrs
.max_ops
= NFS4_MAX_OPS
;
7249 args
->fc_attrs
.max_reqs
= max_session_slots
;
7251 dprintk("%s: Fore Channel : max_rqst_sz=%u max_resp_sz=%u "
7252 "max_ops=%u max_reqs=%u\n",
7254 args
->fc_attrs
.max_rqst_sz
, args
->fc_attrs
.max_resp_sz
,
7255 args
->fc_attrs
.max_ops
, args
->fc_attrs
.max_reqs
);
7257 /* Back channel attributes */
7258 args
->bc_attrs
.max_rqst_sz
= PAGE_SIZE
;
7259 args
->bc_attrs
.max_resp_sz
= PAGE_SIZE
;
7260 args
->bc_attrs
.max_resp_sz_cached
= 0;
7261 args
->bc_attrs
.max_ops
= NFS4_MAX_BACK_CHANNEL_OPS
;
7262 args
->bc_attrs
.max_reqs
= 1;
7264 dprintk("%s: Back Channel : max_rqst_sz=%u max_resp_sz=%u "
7265 "max_resp_sz_cached=%u max_ops=%u max_reqs=%u\n",
7267 args
->bc_attrs
.max_rqst_sz
, args
->bc_attrs
.max_resp_sz
,
7268 args
->bc_attrs
.max_resp_sz_cached
, args
->bc_attrs
.max_ops
,
7269 args
->bc_attrs
.max_reqs
);
7272 static int nfs4_verify_fore_channel_attrs(struct nfs41_create_session_args
*args
,
7273 struct nfs41_create_session_res
*res
)
7275 struct nfs4_channel_attrs
*sent
= &args
->fc_attrs
;
7276 struct nfs4_channel_attrs
*rcvd
= &res
->fc_attrs
;
7278 if (rcvd
->max_resp_sz
> sent
->max_resp_sz
)
7281 * Our requested max_ops is the minimum we need; we're not
7282 * prepared to break up compounds into smaller pieces than that.
7283 * So, no point even trying to continue if the server won't
7286 if (rcvd
->max_ops
< sent
->max_ops
)
7288 if (rcvd
->max_reqs
== 0)
7290 if (rcvd
->max_reqs
> NFS4_MAX_SLOT_TABLE
)
7291 rcvd
->max_reqs
= NFS4_MAX_SLOT_TABLE
;
7295 static int nfs4_verify_back_channel_attrs(struct nfs41_create_session_args
*args
,
7296 struct nfs41_create_session_res
*res
)
7298 struct nfs4_channel_attrs
*sent
= &args
->bc_attrs
;
7299 struct nfs4_channel_attrs
*rcvd
= &res
->bc_attrs
;
7301 if (!(res
->flags
& SESSION4_BACK_CHAN
))
7303 if (rcvd
->max_rqst_sz
> sent
->max_rqst_sz
)
7305 if (rcvd
->max_resp_sz
< sent
->max_resp_sz
)
7307 if (rcvd
->max_resp_sz_cached
> sent
->max_resp_sz_cached
)
7309 /* These would render the backchannel useless: */
7310 if (rcvd
->max_ops
!= sent
->max_ops
)
7312 if (rcvd
->max_reqs
!= sent
->max_reqs
)
7318 static int nfs4_verify_channel_attrs(struct nfs41_create_session_args
*args
,
7319 struct nfs41_create_session_res
*res
)
7323 ret
= nfs4_verify_fore_channel_attrs(args
, res
);
7326 return nfs4_verify_back_channel_attrs(args
, res
);
7329 static void nfs4_update_session(struct nfs4_session
*session
,
7330 struct nfs41_create_session_res
*res
)
7332 nfs4_copy_sessionid(&session
->sess_id
, &res
->sessionid
);
7333 /* Mark client id and session as being confirmed */
7334 session
->clp
->cl_exchange_flags
|= EXCHGID4_FLAG_CONFIRMED_R
;
7335 set_bit(NFS4_SESSION_ESTABLISHED
, &session
->session_state
);
7336 session
->flags
= res
->flags
;
7337 memcpy(&session
->fc_attrs
, &res
->fc_attrs
, sizeof(session
->fc_attrs
));
7338 if (res
->flags
& SESSION4_BACK_CHAN
)
7339 memcpy(&session
->bc_attrs
, &res
->bc_attrs
,
7340 sizeof(session
->bc_attrs
));
7343 static int _nfs4_proc_create_session(struct nfs_client
*clp
,
7344 struct rpc_cred
*cred
)
7346 struct nfs4_session
*session
= clp
->cl_session
;
7347 struct nfs41_create_session_args args
= {
7349 .clientid
= clp
->cl_clientid
,
7350 .seqid
= clp
->cl_seqid
,
7351 .cb_program
= NFS4_CALLBACK
,
7353 struct nfs41_create_session_res res
;
7355 struct rpc_message msg
= {
7356 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CREATE_SESSION
],
7363 nfs4_init_channel_attrs(&args
);
7364 args
.flags
= (SESSION4_PERSIST
| SESSION4_BACK_CHAN
);
7366 status
= rpc_call_sync(session
->clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
7367 trace_nfs4_create_session(clp
, status
);
7370 /* Verify the session's negotiated channel_attrs values */
7371 status
= nfs4_verify_channel_attrs(&args
, &res
);
7372 /* Increment the clientid slot sequence id */
7373 if (clp
->cl_seqid
== res
.seqid
)
7377 nfs4_update_session(session
, &res
);
7384 * Issues a CREATE_SESSION operation to the server.
7385 * It is the responsibility of the caller to verify the session is
7386 * expired before calling this routine.
7388 int nfs4_proc_create_session(struct nfs_client
*clp
, struct rpc_cred
*cred
)
7392 struct nfs4_session
*session
= clp
->cl_session
;
7394 dprintk("--> %s clp=%p session=%p\n", __func__
, clp
, session
);
7396 status
= _nfs4_proc_create_session(clp
, cred
);
7400 /* Init or reset the session slot tables */
7401 status
= nfs4_setup_session_slot_tables(session
);
7402 dprintk("slot table setup returned %d\n", status
);
7406 ptr
= (unsigned *)&session
->sess_id
.data
[0];
7407 dprintk("%s client>seqid %d sessionid %u:%u:%u:%u\n", __func__
,
7408 clp
->cl_seqid
, ptr
[0], ptr
[1], ptr
[2], ptr
[3]);
7410 dprintk("<-- %s\n", __func__
);
7415 * Issue the over-the-wire RPC DESTROY_SESSION.
7416 * The caller must serialize access to this routine.
7418 int nfs4_proc_destroy_session(struct nfs4_session
*session
,
7419 struct rpc_cred
*cred
)
7421 struct rpc_message msg
= {
7422 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DESTROY_SESSION
],
7423 .rpc_argp
= session
,
7428 dprintk("--> nfs4_proc_destroy_session\n");
7430 /* session is still being setup */
7431 if (!test_and_clear_bit(NFS4_SESSION_ESTABLISHED
, &session
->session_state
))
7434 status
= rpc_call_sync(session
->clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
7435 trace_nfs4_destroy_session(session
->clp
, status
);
7438 dprintk("NFS: Got error %d from the server on DESTROY_SESSION. "
7439 "Session has been destroyed regardless...\n", status
);
7441 dprintk("<-- nfs4_proc_destroy_session\n");
7446 * Renew the cl_session lease.
7448 struct nfs4_sequence_data
{
7449 struct nfs_client
*clp
;
7450 struct nfs4_sequence_args args
;
7451 struct nfs4_sequence_res res
;
7454 static void nfs41_sequence_release(void *data
)
7456 struct nfs4_sequence_data
*calldata
= data
;
7457 struct nfs_client
*clp
= calldata
->clp
;
7459 if (atomic_read(&clp
->cl_count
) > 1)
7460 nfs4_schedule_state_renewal(clp
);
7461 nfs_put_client(clp
);
7465 static int nfs41_sequence_handle_errors(struct rpc_task
*task
, struct nfs_client
*clp
)
7467 switch(task
->tk_status
) {
7468 case -NFS4ERR_DELAY
:
7469 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
7472 nfs4_schedule_lease_recovery(clp
);
7477 static void nfs41_sequence_call_done(struct rpc_task
*task
, void *data
)
7479 struct nfs4_sequence_data
*calldata
= data
;
7480 struct nfs_client
*clp
= calldata
->clp
;
7482 if (!nfs41_sequence_done(task
, task
->tk_msg
.rpc_resp
))
7485 trace_nfs4_sequence(clp
, task
->tk_status
);
7486 if (task
->tk_status
< 0) {
7487 dprintk("%s ERROR %d\n", __func__
, task
->tk_status
);
7488 if (atomic_read(&clp
->cl_count
) == 1)
7491 if (nfs41_sequence_handle_errors(task
, clp
) == -EAGAIN
) {
7492 rpc_restart_call_prepare(task
);
7496 dprintk("%s rpc_cred %p\n", __func__
, task
->tk_msg
.rpc_cred
);
7498 dprintk("<-- %s\n", __func__
);
7501 static void nfs41_sequence_prepare(struct rpc_task
*task
, void *data
)
7503 struct nfs4_sequence_data
*calldata
= data
;
7504 struct nfs_client
*clp
= calldata
->clp
;
7505 struct nfs4_sequence_args
*args
;
7506 struct nfs4_sequence_res
*res
;
7508 args
= task
->tk_msg
.rpc_argp
;
7509 res
= task
->tk_msg
.rpc_resp
;
7511 nfs41_setup_sequence(clp
->cl_session
, args
, res
, task
);
7514 static const struct rpc_call_ops nfs41_sequence_ops
= {
7515 .rpc_call_done
= nfs41_sequence_call_done
,
7516 .rpc_call_prepare
= nfs41_sequence_prepare
,
7517 .rpc_release
= nfs41_sequence_release
,
7520 static struct rpc_task
*_nfs41_proc_sequence(struct nfs_client
*clp
,
7521 struct rpc_cred
*cred
,
7524 struct nfs4_sequence_data
*calldata
;
7525 struct rpc_message msg
= {
7526 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SEQUENCE
],
7529 struct rpc_task_setup task_setup_data
= {
7530 .rpc_client
= clp
->cl_rpcclient
,
7531 .rpc_message
= &msg
,
7532 .callback_ops
= &nfs41_sequence_ops
,
7533 .flags
= RPC_TASK_ASYNC
| RPC_TASK_TIMEOUT
,
7536 if (!atomic_inc_not_zero(&clp
->cl_count
))
7537 return ERR_PTR(-EIO
);
7538 calldata
= kzalloc(sizeof(*calldata
), GFP_NOFS
);
7539 if (calldata
== NULL
) {
7540 nfs_put_client(clp
);
7541 return ERR_PTR(-ENOMEM
);
7543 nfs4_init_sequence(&calldata
->args
, &calldata
->res
, 0);
7545 nfs4_set_sequence_privileged(&calldata
->args
);
7546 msg
.rpc_argp
= &calldata
->args
;
7547 msg
.rpc_resp
= &calldata
->res
;
7548 calldata
->clp
= clp
;
7549 task_setup_data
.callback_data
= calldata
;
7551 return rpc_run_task(&task_setup_data
);
7554 static int nfs41_proc_async_sequence(struct nfs_client
*clp
, struct rpc_cred
*cred
, unsigned renew_flags
)
7556 struct rpc_task
*task
;
7559 if ((renew_flags
& NFS4_RENEW_TIMEOUT
) == 0)
7561 task
= _nfs41_proc_sequence(clp
, cred
, false);
7563 ret
= PTR_ERR(task
);
7565 rpc_put_task_async(task
);
7566 dprintk("<-- %s status=%d\n", __func__
, ret
);
7570 static int nfs4_proc_sequence(struct nfs_client
*clp
, struct rpc_cred
*cred
)
7572 struct rpc_task
*task
;
7575 task
= _nfs41_proc_sequence(clp
, cred
, true);
7577 ret
= PTR_ERR(task
);
7580 ret
= rpc_wait_for_completion_task(task
);
7582 ret
= task
->tk_status
;
7585 dprintk("<-- %s status=%d\n", __func__
, ret
);
7589 struct nfs4_reclaim_complete_data
{
7590 struct nfs_client
*clp
;
7591 struct nfs41_reclaim_complete_args arg
;
7592 struct nfs41_reclaim_complete_res res
;
7595 static void nfs4_reclaim_complete_prepare(struct rpc_task
*task
, void *data
)
7597 struct nfs4_reclaim_complete_data
*calldata
= data
;
7599 nfs41_setup_sequence(calldata
->clp
->cl_session
,
7600 &calldata
->arg
.seq_args
,
7601 &calldata
->res
.seq_res
,
7605 static int nfs41_reclaim_complete_handle_errors(struct rpc_task
*task
, struct nfs_client
*clp
)
7607 switch(task
->tk_status
) {
7609 case -NFS4ERR_COMPLETE_ALREADY
:
7610 case -NFS4ERR_WRONG_CRED
: /* What to do here? */
7612 case -NFS4ERR_DELAY
:
7613 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
7615 case -NFS4ERR_RETRY_UNCACHED_REP
:
7618 nfs4_schedule_lease_recovery(clp
);
7623 static void nfs4_reclaim_complete_done(struct rpc_task
*task
, void *data
)
7625 struct nfs4_reclaim_complete_data
*calldata
= data
;
7626 struct nfs_client
*clp
= calldata
->clp
;
7627 struct nfs4_sequence_res
*res
= &calldata
->res
.seq_res
;
7629 dprintk("--> %s\n", __func__
);
7630 if (!nfs41_sequence_done(task
, res
))
7633 trace_nfs4_reclaim_complete(clp
, task
->tk_status
);
7634 if (nfs41_reclaim_complete_handle_errors(task
, clp
) == -EAGAIN
) {
7635 rpc_restart_call_prepare(task
);
7638 dprintk("<-- %s\n", __func__
);
7641 static void nfs4_free_reclaim_complete_data(void *data
)
7643 struct nfs4_reclaim_complete_data
*calldata
= data
;
7648 static const struct rpc_call_ops nfs4_reclaim_complete_call_ops
= {
7649 .rpc_call_prepare
= nfs4_reclaim_complete_prepare
,
7650 .rpc_call_done
= nfs4_reclaim_complete_done
,
7651 .rpc_release
= nfs4_free_reclaim_complete_data
,
7655 * Issue a global reclaim complete.
7657 static int nfs41_proc_reclaim_complete(struct nfs_client
*clp
,
7658 struct rpc_cred
*cred
)
7660 struct nfs4_reclaim_complete_data
*calldata
;
7661 struct rpc_task
*task
;
7662 struct rpc_message msg
= {
7663 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RECLAIM_COMPLETE
],
7666 struct rpc_task_setup task_setup_data
= {
7667 .rpc_client
= clp
->cl_rpcclient
,
7668 .rpc_message
= &msg
,
7669 .callback_ops
= &nfs4_reclaim_complete_call_ops
,
7670 .flags
= RPC_TASK_ASYNC
,
7672 int status
= -ENOMEM
;
7674 dprintk("--> %s\n", __func__
);
7675 calldata
= kzalloc(sizeof(*calldata
), GFP_NOFS
);
7676 if (calldata
== NULL
)
7678 calldata
->clp
= clp
;
7679 calldata
->arg
.one_fs
= 0;
7681 nfs4_init_sequence(&calldata
->arg
.seq_args
, &calldata
->res
.seq_res
, 0);
7682 nfs4_set_sequence_privileged(&calldata
->arg
.seq_args
);
7683 msg
.rpc_argp
= &calldata
->arg
;
7684 msg
.rpc_resp
= &calldata
->res
;
7685 task_setup_data
.callback_data
= calldata
;
7686 task
= rpc_run_task(&task_setup_data
);
7688 status
= PTR_ERR(task
);
7691 status
= nfs4_wait_for_completion_rpc_task(task
);
7693 status
= task
->tk_status
;
7697 dprintk("<-- %s status=%d\n", __func__
, status
);
7702 nfs4_layoutget_prepare(struct rpc_task
*task
, void *calldata
)
7704 struct nfs4_layoutget
*lgp
= calldata
;
7705 struct nfs_server
*server
= NFS_SERVER(lgp
->args
.inode
);
7706 struct nfs4_session
*session
= nfs4_get_session(server
);
7708 dprintk("--> %s\n", __func__
);
7709 /* Note the is a race here, where a CB_LAYOUTRECALL can come in
7710 * right now covering the LAYOUTGET we are about to send.
7711 * However, that is not so catastrophic, and there seems
7712 * to be no way to prevent it completely.
7714 if (nfs41_setup_sequence(session
, &lgp
->args
.seq_args
,
7715 &lgp
->res
.seq_res
, task
))
7717 if (pnfs_choose_layoutget_stateid(&lgp
->args
.stateid
,
7718 NFS_I(lgp
->args
.inode
)->layout
,
7720 lgp
->args
.ctx
->state
)) {
7721 rpc_exit(task
, NFS4_OK
);
7725 static void nfs4_layoutget_done(struct rpc_task
*task
, void *calldata
)
7727 struct nfs4_layoutget
*lgp
= calldata
;
7728 struct inode
*inode
= lgp
->args
.inode
;
7729 struct nfs_server
*server
= NFS_SERVER(inode
);
7730 struct pnfs_layout_hdr
*lo
;
7731 struct nfs4_state
*state
= NULL
;
7732 unsigned long timeo
, now
, giveup
;
7734 dprintk("--> %s tk_status => %d\n", __func__
, -task
->tk_status
);
7736 if (!nfs41_sequence_done(task
, &lgp
->res
.seq_res
))
7739 switch (task
->tk_status
) {
7743 * NFS4ERR_LAYOUTTRYLATER is a conflict with another client
7744 * (or clients) writing to the same RAID stripe
7746 case -NFS4ERR_LAYOUTTRYLATER
:
7748 * NFS4ERR_RECALLCONFLICT is when conflict with self (must recall
7749 * existing layout before getting a new one).
7751 case -NFS4ERR_RECALLCONFLICT
:
7752 timeo
= rpc_get_timeout(task
->tk_client
);
7753 giveup
= lgp
->args
.timestamp
+ timeo
;
7755 if (time_after(giveup
, now
)) {
7756 unsigned long delay
;
7759 * - Not less then NFS4_POLL_RETRY_MIN.
7760 * - One last time a jiffie before we give up
7761 * - exponential backoff (time_now minus start_attempt)
7763 delay
= max_t(unsigned long, NFS4_POLL_RETRY_MIN
,
7764 min((giveup
- now
- 1),
7765 now
- lgp
->args
.timestamp
));
7767 dprintk("%s: NFS4ERR_RECALLCONFLICT waiting %lu\n",
7769 rpc_delay(task
, delay
);
7770 task
->tk_status
= 0;
7771 rpc_restart_call_prepare(task
);
7772 goto out
; /* Do not call nfs4_async_handle_error() */
7775 case -NFS4ERR_EXPIRED
:
7776 case -NFS4ERR_BAD_STATEID
:
7777 spin_lock(&inode
->i_lock
);
7778 lo
= NFS_I(inode
)->layout
;
7779 if (!lo
|| list_empty(&lo
->plh_segs
)) {
7780 spin_unlock(&inode
->i_lock
);
7781 /* If the open stateid was bad, then recover it. */
7782 state
= lgp
->args
.ctx
->state
;
7787 * Mark the bad layout state as invalid, then retry
7788 * with the current stateid.
7790 pnfs_mark_matching_lsegs_invalid(lo
, &head
, NULL
);
7791 spin_unlock(&inode
->i_lock
);
7792 pnfs_free_lseg_list(&head
);
7794 task
->tk_status
= 0;
7795 rpc_restart_call_prepare(task
);
7798 if (nfs4_async_handle_error(task
, server
, state
, NULL
) == -EAGAIN
)
7799 rpc_restart_call_prepare(task
);
7801 dprintk("<-- %s\n", __func__
);
7804 static size_t max_response_pages(struct nfs_server
*server
)
7806 u32 max_resp_sz
= server
->nfs_client
->cl_session
->fc_attrs
.max_resp_sz
;
7807 return nfs_page_array_len(0, max_resp_sz
);
7810 static void nfs4_free_pages(struct page
**pages
, size_t size
)
7817 for (i
= 0; i
< size
; i
++) {
7820 __free_page(pages
[i
]);
7825 static struct page
**nfs4_alloc_pages(size_t size
, gfp_t gfp_flags
)
7827 struct page
**pages
;
7830 pages
= kcalloc(size
, sizeof(struct page
*), gfp_flags
);
7832 dprintk("%s: can't alloc array of %zu pages\n", __func__
, size
);
7836 for (i
= 0; i
< size
; i
++) {
7837 pages
[i
] = alloc_page(gfp_flags
);
7839 dprintk("%s: failed to allocate page\n", __func__
);
7840 nfs4_free_pages(pages
, size
);
7848 static void nfs4_layoutget_release(void *calldata
)
7850 struct nfs4_layoutget
*lgp
= calldata
;
7851 struct inode
*inode
= lgp
->args
.inode
;
7852 struct nfs_server
*server
= NFS_SERVER(inode
);
7853 size_t max_pages
= max_response_pages(server
);
7855 dprintk("--> %s\n", __func__
);
7856 nfs4_free_pages(lgp
->args
.layout
.pages
, max_pages
);
7857 pnfs_put_layout_hdr(NFS_I(inode
)->layout
);
7858 put_nfs_open_context(lgp
->args
.ctx
);
7860 dprintk("<-- %s\n", __func__
);
7863 static const struct rpc_call_ops nfs4_layoutget_call_ops
= {
7864 .rpc_call_prepare
= nfs4_layoutget_prepare
,
7865 .rpc_call_done
= nfs4_layoutget_done
,
7866 .rpc_release
= nfs4_layoutget_release
,
7869 struct pnfs_layout_segment
*
7870 nfs4_proc_layoutget(struct nfs4_layoutget
*lgp
, gfp_t gfp_flags
)
7872 struct inode
*inode
= lgp
->args
.inode
;
7873 struct nfs_server
*server
= NFS_SERVER(inode
);
7874 size_t max_pages
= max_response_pages(server
);
7875 struct rpc_task
*task
;
7876 struct rpc_message msg
= {
7877 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LAYOUTGET
],
7878 .rpc_argp
= &lgp
->args
,
7879 .rpc_resp
= &lgp
->res
,
7880 .rpc_cred
= lgp
->cred
,
7882 struct rpc_task_setup task_setup_data
= {
7883 .rpc_client
= server
->client
,
7884 .rpc_message
= &msg
,
7885 .callback_ops
= &nfs4_layoutget_call_ops
,
7886 .callback_data
= lgp
,
7887 .flags
= RPC_TASK_ASYNC
,
7889 struct pnfs_layout_segment
*lseg
= NULL
;
7892 dprintk("--> %s\n", __func__
);
7894 /* nfs4_layoutget_release calls pnfs_put_layout_hdr */
7895 pnfs_get_layout_hdr(NFS_I(inode
)->layout
);
7897 lgp
->args
.layout
.pages
= nfs4_alloc_pages(max_pages
, gfp_flags
);
7898 if (!lgp
->args
.layout
.pages
) {
7899 nfs4_layoutget_release(lgp
);
7900 return ERR_PTR(-ENOMEM
);
7902 lgp
->args
.layout
.pglen
= max_pages
* PAGE_SIZE
;
7903 lgp
->args
.timestamp
= jiffies
;
7905 lgp
->res
.layoutp
= &lgp
->args
.layout
;
7906 lgp
->res
.seq_res
.sr_slot
= NULL
;
7907 nfs4_init_sequence(&lgp
->args
.seq_args
, &lgp
->res
.seq_res
, 0);
7909 task
= rpc_run_task(&task_setup_data
);
7911 return ERR_CAST(task
);
7912 status
= nfs4_wait_for_completion_rpc_task(task
);
7914 status
= task
->tk_status
;
7915 trace_nfs4_layoutget(lgp
->args
.ctx
,
7919 /* if layoutp->len is 0, nfs4_layoutget_prepare called rpc_exit */
7920 if (status
== 0 && lgp
->res
.layoutp
->len
)
7921 lseg
= pnfs_layout_process(lgp
);
7923 dprintk("<-- %s status=%d\n", __func__
, status
);
7925 return ERR_PTR(status
);
7930 nfs4_layoutreturn_prepare(struct rpc_task
*task
, void *calldata
)
7932 struct nfs4_layoutreturn
*lrp
= calldata
;
7934 dprintk("--> %s\n", __func__
);
7935 nfs41_setup_sequence(lrp
->clp
->cl_session
,
7936 &lrp
->args
.seq_args
,
7941 static void nfs4_layoutreturn_done(struct rpc_task
*task
, void *calldata
)
7943 struct nfs4_layoutreturn
*lrp
= calldata
;
7944 struct nfs_server
*server
;
7946 dprintk("--> %s\n", __func__
);
7948 if (!nfs41_sequence_done(task
, &lrp
->res
.seq_res
))
7951 server
= NFS_SERVER(lrp
->args
.inode
);
7952 switch (task
->tk_status
) {
7954 task
->tk_status
= 0;
7957 case -NFS4ERR_DELAY
:
7958 if (nfs4_async_handle_error(task
, server
, NULL
, NULL
) != -EAGAIN
)
7960 rpc_restart_call_prepare(task
);
7963 dprintk("<-- %s\n", __func__
);
7966 static void nfs4_layoutreturn_release(void *calldata
)
7968 struct nfs4_layoutreturn
*lrp
= calldata
;
7969 struct pnfs_layout_hdr
*lo
= lrp
->args
.layout
;
7972 dprintk("--> %s\n", __func__
);
7973 spin_lock(&lo
->plh_inode
->i_lock
);
7974 if (lrp
->res
.lrs_present
)
7975 pnfs_set_layout_stateid(lo
, &lrp
->res
.stateid
, true);
7976 pnfs_mark_matching_lsegs_invalid(lo
, &freeme
, &lrp
->args
.range
);
7977 pnfs_clear_layoutreturn_waitbit(lo
);
7978 lo
->plh_block_lgets
--;
7979 spin_unlock(&lo
->plh_inode
->i_lock
);
7980 pnfs_free_lseg_list(&freeme
);
7981 pnfs_put_layout_hdr(lrp
->args
.layout
);
7982 nfs_iput_and_deactive(lrp
->inode
);
7984 dprintk("<-- %s\n", __func__
);
7987 static const struct rpc_call_ops nfs4_layoutreturn_call_ops
= {
7988 .rpc_call_prepare
= nfs4_layoutreturn_prepare
,
7989 .rpc_call_done
= nfs4_layoutreturn_done
,
7990 .rpc_release
= nfs4_layoutreturn_release
,
7993 int nfs4_proc_layoutreturn(struct nfs4_layoutreturn
*lrp
, bool sync
)
7995 struct rpc_task
*task
;
7996 struct rpc_message msg
= {
7997 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LAYOUTRETURN
],
7998 .rpc_argp
= &lrp
->args
,
7999 .rpc_resp
= &lrp
->res
,
8000 .rpc_cred
= lrp
->cred
,
8002 struct rpc_task_setup task_setup_data
= {
8003 .rpc_client
= NFS_SERVER(lrp
->args
.inode
)->client
,
8004 .rpc_message
= &msg
,
8005 .callback_ops
= &nfs4_layoutreturn_call_ops
,
8006 .callback_data
= lrp
,
8010 dprintk("--> %s\n", __func__
);
8012 lrp
->inode
= nfs_igrab_and_active(lrp
->args
.inode
);
8014 nfs4_layoutreturn_release(lrp
);
8017 task_setup_data
.flags
|= RPC_TASK_ASYNC
;
8019 nfs4_init_sequence(&lrp
->args
.seq_args
, &lrp
->res
.seq_res
, 1);
8020 task
= rpc_run_task(&task_setup_data
);
8022 return PTR_ERR(task
);
8024 status
= task
->tk_status
;
8025 trace_nfs4_layoutreturn(lrp
->args
.inode
, status
);
8026 dprintk("<-- %s status=%d\n", __func__
, status
);
8032 _nfs4_proc_getdeviceinfo(struct nfs_server
*server
,
8033 struct pnfs_device
*pdev
,
8034 struct rpc_cred
*cred
)
8036 struct nfs4_getdeviceinfo_args args
= {
8038 .notify_types
= NOTIFY_DEVICEID4_CHANGE
|
8039 NOTIFY_DEVICEID4_DELETE
,
8041 struct nfs4_getdeviceinfo_res res
= {
8044 struct rpc_message msg
= {
8045 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETDEVICEINFO
],
8052 dprintk("--> %s\n", __func__
);
8053 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
8054 if (res
.notification
& ~args
.notify_types
)
8055 dprintk("%s: unsupported notification\n", __func__
);
8056 if (res
.notification
!= args
.notify_types
)
8059 dprintk("<-- %s status=%d\n", __func__
, status
);
8064 int nfs4_proc_getdeviceinfo(struct nfs_server
*server
,
8065 struct pnfs_device
*pdev
,
8066 struct rpc_cred
*cred
)
8068 struct nfs4_exception exception
= { };
8072 err
= nfs4_handle_exception(server
,
8073 _nfs4_proc_getdeviceinfo(server
, pdev
, cred
),
8075 } while (exception
.retry
);
8078 EXPORT_SYMBOL_GPL(nfs4_proc_getdeviceinfo
);
8080 static void nfs4_layoutcommit_prepare(struct rpc_task
*task
, void *calldata
)
8082 struct nfs4_layoutcommit_data
*data
= calldata
;
8083 struct nfs_server
*server
= NFS_SERVER(data
->args
.inode
);
8084 struct nfs4_session
*session
= nfs4_get_session(server
);
8086 nfs41_setup_sequence(session
,
8087 &data
->args
.seq_args
,
8093 nfs4_layoutcommit_done(struct rpc_task
*task
, void *calldata
)
8095 struct nfs4_layoutcommit_data
*data
= calldata
;
8096 struct nfs_server
*server
= NFS_SERVER(data
->args
.inode
);
8098 if (!nfs41_sequence_done(task
, &data
->res
.seq_res
))
8101 switch (task
->tk_status
) { /* Just ignore these failures */
8102 case -NFS4ERR_DELEG_REVOKED
: /* layout was recalled */
8103 case -NFS4ERR_BADIOMODE
: /* no IOMODE_RW layout for range */
8104 case -NFS4ERR_BADLAYOUT
: /* no layout */
8105 case -NFS4ERR_GRACE
: /* loca_recalim always false */
8106 task
->tk_status
= 0;
8110 if (nfs4_async_handle_error(task
, server
, NULL
, NULL
) == -EAGAIN
) {
8111 rpc_restart_call_prepare(task
);
8117 static void nfs4_layoutcommit_release(void *calldata
)
8119 struct nfs4_layoutcommit_data
*data
= calldata
;
8121 pnfs_cleanup_layoutcommit(data
);
8122 nfs_post_op_update_inode_force_wcc(data
->args
.inode
,
8124 put_rpccred(data
->cred
);
8125 nfs_iput_and_deactive(data
->inode
);
8129 static const struct rpc_call_ops nfs4_layoutcommit_ops
= {
8130 .rpc_call_prepare
= nfs4_layoutcommit_prepare
,
8131 .rpc_call_done
= nfs4_layoutcommit_done
,
8132 .rpc_release
= nfs4_layoutcommit_release
,
8136 nfs4_proc_layoutcommit(struct nfs4_layoutcommit_data
*data
, bool sync
)
8138 struct rpc_message msg
= {
8139 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LAYOUTCOMMIT
],
8140 .rpc_argp
= &data
->args
,
8141 .rpc_resp
= &data
->res
,
8142 .rpc_cred
= data
->cred
,
8144 struct rpc_task_setup task_setup_data
= {
8145 .task
= &data
->task
,
8146 .rpc_client
= NFS_CLIENT(data
->args
.inode
),
8147 .rpc_message
= &msg
,
8148 .callback_ops
= &nfs4_layoutcommit_ops
,
8149 .callback_data
= data
,
8151 struct rpc_task
*task
;
8154 dprintk("NFS: initiating layoutcommit call. sync %d "
8155 "lbw: %llu inode %lu\n", sync
,
8156 data
->args
.lastbytewritten
,
8157 data
->args
.inode
->i_ino
);
8160 data
->inode
= nfs_igrab_and_active(data
->args
.inode
);
8161 if (data
->inode
== NULL
) {
8162 nfs4_layoutcommit_release(data
);
8165 task_setup_data
.flags
= RPC_TASK_ASYNC
;
8167 nfs4_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
8168 task
= rpc_run_task(&task_setup_data
);
8170 return PTR_ERR(task
);
8172 status
= task
->tk_status
;
8173 trace_nfs4_layoutcommit(data
->args
.inode
, status
);
8174 dprintk("%s: status %d\n", __func__
, status
);
8180 * Use the state managment nfs_client cl_rpcclient, which uses krb5i (if
8181 * possible) as per RFC3530bis and RFC5661 Security Considerations sections
8184 _nfs41_proc_secinfo_no_name(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
8185 struct nfs_fsinfo
*info
,
8186 struct nfs4_secinfo_flavors
*flavors
, bool use_integrity
)
8188 struct nfs41_secinfo_no_name_args args
= {
8189 .style
= SECINFO_STYLE_CURRENT_FH
,
8191 struct nfs4_secinfo_res res
= {
8194 struct rpc_message msg
= {
8195 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SECINFO_NO_NAME
],
8199 struct rpc_clnt
*clnt
= server
->client
;
8200 struct rpc_cred
*cred
= NULL
;
8203 if (use_integrity
) {
8204 clnt
= server
->nfs_client
->cl_rpcclient
;
8205 cred
= nfs4_get_clid_cred(server
->nfs_client
);
8206 msg
.rpc_cred
= cred
;
8209 dprintk("--> %s\n", __func__
);
8210 status
= nfs4_call_sync(clnt
, server
, &msg
, &args
.seq_args
,
8212 dprintk("<-- %s status=%d\n", __func__
, status
);
8221 nfs41_proc_secinfo_no_name(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
8222 struct nfs_fsinfo
*info
, struct nfs4_secinfo_flavors
*flavors
)
8224 struct nfs4_exception exception
= { };
8227 /* first try using integrity protection */
8228 err
= -NFS4ERR_WRONGSEC
;
8230 /* try to use integrity protection with machine cred */
8231 if (_nfs4_is_integrity_protected(server
->nfs_client
))
8232 err
= _nfs41_proc_secinfo_no_name(server
, fhandle
, info
,
8236 * if unable to use integrity protection, or SECINFO with
8237 * integrity protection returns NFS4ERR_WRONGSEC (which is
8238 * disallowed by spec, but exists in deployed servers) use
8239 * the current filesystem's rpc_client and the user cred.
8241 if (err
== -NFS4ERR_WRONGSEC
)
8242 err
= _nfs41_proc_secinfo_no_name(server
, fhandle
, info
,
8247 case -NFS4ERR_WRONGSEC
:
8251 err
= nfs4_handle_exception(server
, err
, &exception
);
8253 } while (exception
.retry
);
8259 nfs41_find_root_sec(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
8260 struct nfs_fsinfo
*info
)
8264 rpc_authflavor_t flavor
= RPC_AUTH_MAXFLAVOR
;
8265 struct nfs4_secinfo_flavors
*flavors
;
8266 struct nfs4_secinfo4
*secinfo
;
8269 page
= alloc_page(GFP_KERNEL
);
8275 flavors
= page_address(page
);
8276 err
= nfs41_proc_secinfo_no_name(server
, fhandle
, info
, flavors
);
8279 * Fall back on "guess and check" method if
8280 * the server doesn't support SECINFO_NO_NAME
8282 if (err
== -NFS4ERR_WRONGSEC
|| err
== -ENOTSUPP
) {
8283 err
= nfs4_find_root_sec(server
, fhandle
, info
);
8289 for (i
= 0; i
< flavors
->num_flavors
; i
++) {
8290 secinfo
= &flavors
->flavors
[i
];
8292 switch (secinfo
->flavor
) {
8296 flavor
= rpcauth_get_pseudoflavor(secinfo
->flavor
,
8297 &secinfo
->flavor_info
);
8300 flavor
= RPC_AUTH_MAXFLAVOR
;
8304 if (!nfs_auth_info_match(&server
->auth_info
, flavor
))
8305 flavor
= RPC_AUTH_MAXFLAVOR
;
8307 if (flavor
!= RPC_AUTH_MAXFLAVOR
) {
8308 err
= nfs4_lookup_root_sec(server
, fhandle
,
8315 if (flavor
== RPC_AUTH_MAXFLAVOR
)
8326 static int _nfs41_test_stateid(struct nfs_server
*server
,
8327 nfs4_stateid
*stateid
,
8328 struct rpc_cred
*cred
)
8331 struct nfs41_test_stateid_args args
= {
8334 struct nfs41_test_stateid_res res
;
8335 struct rpc_message msg
= {
8336 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_TEST_STATEID
],
8341 struct rpc_clnt
*rpc_client
= server
->client
;
8343 nfs4_state_protect(server
->nfs_client
, NFS_SP4_MACH_CRED_STATEID
,
8346 dprintk("NFS call test_stateid %p\n", stateid
);
8347 nfs4_init_sequence(&args
.seq_args
, &res
.seq_res
, 0);
8348 nfs4_set_sequence_privileged(&args
.seq_args
);
8349 status
= nfs4_call_sync_sequence(rpc_client
, server
, &msg
,
8350 &args
.seq_args
, &res
.seq_res
);
8351 if (status
!= NFS_OK
) {
8352 dprintk("NFS reply test_stateid: failed, %d\n", status
);
8355 dprintk("NFS reply test_stateid: succeeded, %d\n", -res
.status
);
8360 * nfs41_test_stateid - perform a TEST_STATEID operation
8362 * @server: server / transport on which to perform the operation
8363 * @stateid: state ID to test
8366 * Returns NFS_OK if the server recognizes that "stateid" is valid.
8367 * Otherwise a negative NFS4ERR value is returned if the operation
8368 * failed or the state ID is not currently valid.
8370 static int nfs41_test_stateid(struct nfs_server
*server
,
8371 nfs4_stateid
*stateid
,
8372 struct rpc_cred
*cred
)
8374 struct nfs4_exception exception
= { };
8377 err
= _nfs41_test_stateid(server
, stateid
, cred
);
8378 if (err
!= -NFS4ERR_DELAY
)
8380 nfs4_handle_exception(server
, err
, &exception
);
8381 } while (exception
.retry
);
8385 struct nfs_free_stateid_data
{
8386 struct nfs_server
*server
;
8387 struct nfs41_free_stateid_args args
;
8388 struct nfs41_free_stateid_res res
;
8391 static void nfs41_free_stateid_prepare(struct rpc_task
*task
, void *calldata
)
8393 struct nfs_free_stateid_data
*data
= calldata
;
8394 nfs41_setup_sequence(nfs4_get_session(data
->server
),
8395 &data
->args
.seq_args
,
8400 static void nfs41_free_stateid_done(struct rpc_task
*task
, void *calldata
)
8402 struct nfs_free_stateid_data
*data
= calldata
;
8404 nfs41_sequence_done(task
, &data
->res
.seq_res
);
8406 switch (task
->tk_status
) {
8407 case -NFS4ERR_DELAY
:
8408 if (nfs4_async_handle_error(task
, data
->server
, NULL
, NULL
) == -EAGAIN
)
8409 rpc_restart_call_prepare(task
);
8413 static void nfs41_free_stateid_release(void *calldata
)
8418 static const struct rpc_call_ops nfs41_free_stateid_ops
= {
8419 .rpc_call_prepare
= nfs41_free_stateid_prepare
,
8420 .rpc_call_done
= nfs41_free_stateid_done
,
8421 .rpc_release
= nfs41_free_stateid_release
,
8424 static struct rpc_task
*_nfs41_free_stateid(struct nfs_server
*server
,
8425 nfs4_stateid
*stateid
,
8426 struct rpc_cred
*cred
,
8429 struct rpc_message msg
= {
8430 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FREE_STATEID
],
8433 struct rpc_task_setup task_setup
= {
8434 .rpc_client
= server
->client
,
8435 .rpc_message
= &msg
,
8436 .callback_ops
= &nfs41_free_stateid_ops
,
8437 .flags
= RPC_TASK_ASYNC
,
8439 struct nfs_free_stateid_data
*data
;
8441 nfs4_state_protect(server
->nfs_client
, NFS_SP4_MACH_CRED_STATEID
,
8442 &task_setup
.rpc_client
, &msg
);
8444 dprintk("NFS call free_stateid %p\n", stateid
);
8445 data
= kmalloc(sizeof(*data
), GFP_NOFS
);
8447 return ERR_PTR(-ENOMEM
);
8448 data
->server
= server
;
8449 nfs4_stateid_copy(&data
->args
.stateid
, stateid
);
8451 task_setup
.callback_data
= data
;
8453 msg
.rpc_argp
= &data
->args
;
8454 msg
.rpc_resp
= &data
->res
;
8455 nfs4_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 0);
8457 nfs4_set_sequence_privileged(&data
->args
.seq_args
);
8459 return rpc_run_task(&task_setup
);
8463 * nfs41_free_stateid - perform a FREE_STATEID operation
8465 * @server: server / transport on which to perform the operation
8466 * @stateid: state ID to release
8469 * Returns NFS_OK if the server freed "stateid". Otherwise a
8470 * negative NFS4ERR value is returned.
8472 static int nfs41_free_stateid(struct nfs_server
*server
,
8473 nfs4_stateid
*stateid
,
8474 struct rpc_cred
*cred
)
8476 struct rpc_task
*task
;
8479 task
= _nfs41_free_stateid(server
, stateid
, cred
, true);
8481 return PTR_ERR(task
);
8482 ret
= rpc_wait_for_completion_task(task
);
8484 ret
= task
->tk_status
;
8490 nfs41_free_lock_state(struct nfs_server
*server
, struct nfs4_lock_state
*lsp
)
8492 struct rpc_task
*task
;
8493 struct rpc_cred
*cred
= lsp
->ls_state
->owner
->so_cred
;
8495 task
= _nfs41_free_stateid(server
, &lsp
->ls_stateid
, cred
, false);
8496 nfs4_free_lock_state(server
, lsp
);
8502 static bool nfs41_match_stateid(const nfs4_stateid
*s1
,
8503 const nfs4_stateid
*s2
)
8505 if (memcmp(s1
->other
, s2
->other
, sizeof(s1
->other
)) != 0)
8508 if (s1
->seqid
== s2
->seqid
)
8510 if (s1
->seqid
== 0 || s2
->seqid
== 0)
8516 #endif /* CONFIG_NFS_V4_1 */
8518 static bool nfs4_match_stateid(const nfs4_stateid
*s1
,
8519 const nfs4_stateid
*s2
)
8521 return nfs4_stateid_match(s1
, s2
);
8525 static const struct nfs4_state_recovery_ops nfs40_reboot_recovery_ops
= {
8526 .owner_flag_bit
= NFS_OWNER_RECLAIM_REBOOT
,
8527 .state_flag_bit
= NFS_STATE_RECLAIM_REBOOT
,
8528 .recover_open
= nfs4_open_reclaim
,
8529 .recover_lock
= nfs4_lock_reclaim
,
8530 .establish_clid
= nfs4_init_clientid
,
8531 .detect_trunking
= nfs40_discover_server_trunking
,
8534 #if defined(CONFIG_NFS_V4_1)
8535 static const struct nfs4_state_recovery_ops nfs41_reboot_recovery_ops
= {
8536 .owner_flag_bit
= NFS_OWNER_RECLAIM_REBOOT
,
8537 .state_flag_bit
= NFS_STATE_RECLAIM_REBOOT
,
8538 .recover_open
= nfs4_open_reclaim
,
8539 .recover_lock
= nfs4_lock_reclaim
,
8540 .establish_clid
= nfs41_init_clientid
,
8541 .reclaim_complete
= nfs41_proc_reclaim_complete
,
8542 .detect_trunking
= nfs41_discover_server_trunking
,
8544 #endif /* CONFIG_NFS_V4_1 */
8546 static const struct nfs4_state_recovery_ops nfs40_nograce_recovery_ops
= {
8547 .owner_flag_bit
= NFS_OWNER_RECLAIM_NOGRACE
,
8548 .state_flag_bit
= NFS_STATE_RECLAIM_NOGRACE
,
8549 .recover_open
= nfs40_open_expired
,
8550 .recover_lock
= nfs4_lock_expired
,
8551 .establish_clid
= nfs4_init_clientid
,
8554 #if defined(CONFIG_NFS_V4_1)
8555 static const struct nfs4_state_recovery_ops nfs41_nograce_recovery_ops
= {
8556 .owner_flag_bit
= NFS_OWNER_RECLAIM_NOGRACE
,
8557 .state_flag_bit
= NFS_STATE_RECLAIM_NOGRACE
,
8558 .recover_open
= nfs41_open_expired
,
8559 .recover_lock
= nfs41_lock_expired
,
8560 .establish_clid
= nfs41_init_clientid
,
8562 #endif /* CONFIG_NFS_V4_1 */
8564 static const struct nfs4_state_maintenance_ops nfs40_state_renewal_ops
= {
8565 .sched_state_renewal
= nfs4_proc_async_renew
,
8566 .get_state_renewal_cred_locked
= nfs4_get_renew_cred_locked
,
8567 .renew_lease
= nfs4_proc_renew
,
8570 #if defined(CONFIG_NFS_V4_1)
8571 static const struct nfs4_state_maintenance_ops nfs41_state_renewal_ops
= {
8572 .sched_state_renewal
= nfs41_proc_async_sequence
,
8573 .get_state_renewal_cred_locked
= nfs4_get_machine_cred_locked
,
8574 .renew_lease
= nfs4_proc_sequence
,
8578 static const struct nfs4_mig_recovery_ops nfs40_mig_recovery_ops
= {
8579 .get_locations
= _nfs40_proc_get_locations
,
8580 .fsid_present
= _nfs40_proc_fsid_present
,
8583 #if defined(CONFIG_NFS_V4_1)
8584 static const struct nfs4_mig_recovery_ops nfs41_mig_recovery_ops
= {
8585 .get_locations
= _nfs41_proc_get_locations
,
8586 .fsid_present
= _nfs41_proc_fsid_present
,
8588 #endif /* CONFIG_NFS_V4_1 */
8590 static const struct nfs4_minor_version_ops nfs_v4_0_minor_ops
= {
8592 .init_caps
= NFS_CAP_READDIRPLUS
8593 | NFS_CAP_ATOMIC_OPEN
8594 | NFS_CAP_POSIX_LOCK
,
8595 .init_client
= nfs40_init_client
,
8596 .shutdown_client
= nfs40_shutdown_client
,
8597 .match_stateid
= nfs4_match_stateid
,
8598 .find_root_sec
= nfs4_find_root_sec
,
8599 .free_lock_state
= nfs4_release_lockowner
,
8600 .alloc_seqid
= nfs_alloc_seqid
,
8601 .call_sync_ops
= &nfs40_call_sync_ops
,
8602 .reboot_recovery_ops
= &nfs40_reboot_recovery_ops
,
8603 .nograce_recovery_ops
= &nfs40_nograce_recovery_ops
,
8604 .state_renewal_ops
= &nfs40_state_renewal_ops
,
8605 .mig_recovery_ops
= &nfs40_mig_recovery_ops
,
8608 #if defined(CONFIG_NFS_V4_1)
8609 static struct nfs_seqid
*
8610 nfs_alloc_no_seqid(struct nfs_seqid_counter
*arg1
, gfp_t arg2
)
8615 static const struct nfs4_minor_version_ops nfs_v4_1_minor_ops
= {
8617 .init_caps
= NFS_CAP_READDIRPLUS
8618 | NFS_CAP_ATOMIC_OPEN
8619 | NFS_CAP_POSIX_LOCK
8620 | NFS_CAP_STATEID_NFSV41
8621 | NFS_CAP_ATOMIC_OPEN_V1
,
8622 .init_client
= nfs41_init_client
,
8623 .shutdown_client
= nfs41_shutdown_client
,
8624 .match_stateid
= nfs41_match_stateid
,
8625 .find_root_sec
= nfs41_find_root_sec
,
8626 .free_lock_state
= nfs41_free_lock_state
,
8627 .alloc_seqid
= nfs_alloc_no_seqid
,
8628 .call_sync_ops
= &nfs41_call_sync_ops
,
8629 .reboot_recovery_ops
= &nfs41_reboot_recovery_ops
,
8630 .nograce_recovery_ops
= &nfs41_nograce_recovery_ops
,
8631 .state_renewal_ops
= &nfs41_state_renewal_ops
,
8632 .mig_recovery_ops
= &nfs41_mig_recovery_ops
,
8636 #if defined(CONFIG_NFS_V4_2)
8637 static const struct nfs4_minor_version_ops nfs_v4_2_minor_ops
= {
8639 .init_caps
= NFS_CAP_READDIRPLUS
8640 | NFS_CAP_ATOMIC_OPEN
8641 | NFS_CAP_POSIX_LOCK
8642 | NFS_CAP_STATEID_NFSV41
8643 | NFS_CAP_ATOMIC_OPEN_V1
8645 | NFS_CAP_DEALLOCATE
8647 | NFS_CAP_LAYOUTSTATS
,
8648 .init_client
= nfs41_init_client
,
8649 .shutdown_client
= nfs41_shutdown_client
,
8650 .match_stateid
= nfs41_match_stateid
,
8651 .find_root_sec
= nfs41_find_root_sec
,
8652 .free_lock_state
= nfs41_free_lock_state
,
8653 .call_sync_ops
= &nfs41_call_sync_ops
,
8654 .alloc_seqid
= nfs_alloc_no_seqid
,
8655 .reboot_recovery_ops
= &nfs41_reboot_recovery_ops
,
8656 .nograce_recovery_ops
= &nfs41_nograce_recovery_ops
,
8657 .state_renewal_ops
= &nfs41_state_renewal_ops
,
8661 const struct nfs4_minor_version_ops
*nfs_v4_minor_ops
[] = {
8662 [0] = &nfs_v4_0_minor_ops
,
8663 #if defined(CONFIG_NFS_V4_1)
8664 [1] = &nfs_v4_1_minor_ops
,
8666 #if defined(CONFIG_NFS_V4_2)
8667 [2] = &nfs_v4_2_minor_ops
,
8671 static const struct inode_operations nfs4_dir_inode_operations
= {
8672 .create
= nfs_create
,
8673 .lookup
= nfs_lookup
,
8674 .atomic_open
= nfs_atomic_open
,
8676 .unlink
= nfs_unlink
,
8677 .symlink
= nfs_symlink
,
8681 .rename
= nfs_rename
,
8682 .permission
= nfs_permission
,
8683 .getattr
= nfs_getattr
,
8684 .setattr
= nfs_setattr
,
8685 .getxattr
= generic_getxattr
,
8686 .setxattr
= generic_setxattr
,
8687 .listxattr
= generic_listxattr
,
8688 .removexattr
= generic_removexattr
,
8691 static const struct inode_operations nfs4_file_inode_operations
= {
8692 .permission
= nfs_permission
,
8693 .getattr
= nfs_getattr
,
8694 .setattr
= nfs_setattr
,
8695 .getxattr
= generic_getxattr
,
8696 .setxattr
= generic_setxattr
,
8697 .listxattr
= generic_listxattr
,
8698 .removexattr
= generic_removexattr
,
8701 const struct nfs_rpc_ops nfs_v4_clientops
= {
8702 .version
= 4, /* protocol version */
8703 .dentry_ops
= &nfs4_dentry_operations
,
8704 .dir_inode_ops
= &nfs4_dir_inode_operations
,
8705 .file_inode_ops
= &nfs4_file_inode_operations
,
8706 .file_ops
= &nfs4_file_operations
,
8707 .getroot
= nfs4_proc_get_root
,
8708 .submount
= nfs4_submount
,
8709 .try_mount
= nfs4_try_mount
,
8710 .getattr
= nfs4_proc_getattr
,
8711 .setattr
= nfs4_proc_setattr
,
8712 .lookup
= nfs4_proc_lookup
,
8713 .access
= nfs4_proc_access
,
8714 .readlink
= nfs4_proc_readlink
,
8715 .create
= nfs4_proc_create
,
8716 .remove
= nfs4_proc_remove
,
8717 .unlink_setup
= nfs4_proc_unlink_setup
,
8718 .unlink_rpc_prepare
= nfs4_proc_unlink_rpc_prepare
,
8719 .unlink_done
= nfs4_proc_unlink_done
,
8720 .rename_setup
= nfs4_proc_rename_setup
,
8721 .rename_rpc_prepare
= nfs4_proc_rename_rpc_prepare
,
8722 .rename_done
= nfs4_proc_rename_done
,
8723 .link
= nfs4_proc_link
,
8724 .symlink
= nfs4_proc_symlink
,
8725 .mkdir
= nfs4_proc_mkdir
,
8726 .rmdir
= nfs4_proc_remove
,
8727 .readdir
= nfs4_proc_readdir
,
8728 .mknod
= nfs4_proc_mknod
,
8729 .statfs
= nfs4_proc_statfs
,
8730 .fsinfo
= nfs4_proc_fsinfo
,
8731 .pathconf
= nfs4_proc_pathconf
,
8732 .set_capabilities
= nfs4_server_capabilities
,
8733 .decode_dirent
= nfs4_decode_dirent
,
8734 .pgio_rpc_prepare
= nfs4_proc_pgio_rpc_prepare
,
8735 .read_setup
= nfs4_proc_read_setup
,
8736 .read_done
= nfs4_read_done
,
8737 .write_setup
= nfs4_proc_write_setup
,
8738 .write_done
= nfs4_write_done
,
8739 .commit_setup
= nfs4_proc_commit_setup
,
8740 .commit_rpc_prepare
= nfs4_proc_commit_rpc_prepare
,
8741 .commit_done
= nfs4_commit_done
,
8742 .lock
= nfs4_proc_lock
,
8743 .clear_acl_cache
= nfs4_zap_acl_attr
,
8744 .close_context
= nfs4_close_context
,
8745 .open_context
= nfs4_atomic_open
,
8746 .have_delegation
= nfs4_have_delegation
,
8747 .return_delegation
= nfs4_inode_return_delegation
,
8748 .alloc_client
= nfs4_alloc_client
,
8749 .init_client
= nfs4_init_client
,
8750 .free_client
= nfs4_free_client
,
8751 .create_server
= nfs4_create_server
,
8752 .clone_server
= nfs_clone_server
,
8755 static const struct xattr_handler nfs4_xattr_nfs4_acl_handler
= {
8756 .prefix
= XATTR_NAME_NFSV4_ACL
,
8757 .list
= nfs4_xattr_list_nfs4_acl
,
8758 .get
= nfs4_xattr_get_nfs4_acl
,
8759 .set
= nfs4_xattr_set_nfs4_acl
,
8762 const struct xattr_handler
*nfs4_xattr_handlers
[] = {
8763 &nfs4_xattr_nfs4_acl_handler
,
8764 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
8765 &nfs4_xattr_nfs4_label_handler
,