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 void nfs_fixup_referral_attributes(struct nfs_fattr
*fattr
);
82 static int nfs4_proc_getattr(struct nfs_server
*, struct nfs_fh
*, struct nfs_fattr
*, struct nfs4_label
*label
);
83 static int _nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
, struct nfs4_label
*label
);
84 static int nfs4_do_setattr(struct inode
*inode
, struct rpc_cred
*cred
,
85 struct nfs_fattr
*fattr
, struct iattr
*sattr
,
86 struct nfs4_state
*state
, struct nfs4_label
*ilabel
,
87 struct nfs4_label
*olabel
);
88 #ifdef CONFIG_NFS_V4_1
89 static int nfs41_test_stateid(struct nfs_server
*, nfs4_stateid
*,
91 static int nfs41_free_stateid(struct nfs_server
*, nfs4_stateid
*,
95 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
96 static inline struct nfs4_label
*
97 nfs4_label_init_security(struct inode
*dir
, struct dentry
*dentry
,
98 struct iattr
*sattr
, struct nfs4_label
*label
)
105 if (nfs_server_capable(dir
, NFS_CAP_SECURITY_LABEL
) == 0)
108 err
= security_dentry_init_security(dentry
, sattr
->ia_mode
,
109 &dentry
->d_name
, (void **)&label
->label
, &label
->len
);
116 nfs4_label_release_security(struct nfs4_label
*label
)
119 security_release_secctx(label
->label
, label
->len
);
121 static inline u32
*nfs4_bitmask(struct nfs_server
*server
, struct nfs4_label
*label
)
124 return server
->attr_bitmask
;
126 return server
->attr_bitmask_nl
;
129 static inline struct nfs4_label
*
130 nfs4_label_init_security(struct inode
*dir
, struct dentry
*dentry
,
131 struct iattr
*sattr
, struct nfs4_label
*l
)
134 nfs4_label_release_security(struct nfs4_label
*label
)
137 nfs4_bitmask(struct nfs_server
*server
, struct nfs4_label
*label
)
138 { return server
->attr_bitmask
; }
141 /* Prevent leaks of NFSv4 errors into userland */
142 static int nfs4_map_errors(int err
)
147 case -NFS4ERR_RESOURCE
:
148 case -NFS4ERR_LAYOUTTRYLATER
:
149 case -NFS4ERR_RECALLCONFLICT
:
151 case -NFS4ERR_WRONGSEC
:
152 case -NFS4ERR_WRONG_CRED
:
154 case -NFS4ERR_BADOWNER
:
155 case -NFS4ERR_BADNAME
:
157 case -NFS4ERR_SHARE_DENIED
:
159 case -NFS4ERR_MINOR_VERS_MISMATCH
:
160 return -EPROTONOSUPPORT
;
161 case -NFS4ERR_FILE_OPEN
:
164 dprintk("%s could not handle NFSv4 error %d\n",
172 * This is our standard bitmap for GETATTR requests.
174 const u32 nfs4_fattr_bitmap
[3] = {
176 | FATTR4_WORD0_CHANGE
179 | FATTR4_WORD0_FILEID
,
181 | FATTR4_WORD1_NUMLINKS
183 | FATTR4_WORD1_OWNER_GROUP
184 | FATTR4_WORD1_RAWDEV
185 | FATTR4_WORD1_SPACE_USED
186 | FATTR4_WORD1_TIME_ACCESS
187 | FATTR4_WORD1_TIME_METADATA
188 | FATTR4_WORD1_TIME_MODIFY
189 | FATTR4_WORD1_MOUNTED_ON_FILEID
,
190 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
191 FATTR4_WORD2_SECURITY_LABEL
195 static const u32 nfs4_pnfs_open_bitmap
[3] = {
197 | FATTR4_WORD0_CHANGE
200 | FATTR4_WORD0_FILEID
,
202 | FATTR4_WORD1_NUMLINKS
204 | FATTR4_WORD1_OWNER_GROUP
205 | FATTR4_WORD1_RAWDEV
206 | FATTR4_WORD1_SPACE_USED
207 | FATTR4_WORD1_TIME_ACCESS
208 | FATTR4_WORD1_TIME_METADATA
209 | FATTR4_WORD1_TIME_MODIFY
,
210 FATTR4_WORD2_MDSTHRESHOLD
213 static const u32 nfs4_open_noattr_bitmap
[3] = {
215 | FATTR4_WORD0_CHANGE
216 | FATTR4_WORD0_FILEID
,
219 const u32 nfs4_statfs_bitmap
[3] = {
220 FATTR4_WORD0_FILES_AVAIL
221 | FATTR4_WORD0_FILES_FREE
222 | FATTR4_WORD0_FILES_TOTAL
,
223 FATTR4_WORD1_SPACE_AVAIL
224 | FATTR4_WORD1_SPACE_FREE
225 | FATTR4_WORD1_SPACE_TOTAL
228 const u32 nfs4_pathconf_bitmap
[3] = {
230 | FATTR4_WORD0_MAXNAME
,
234 const u32 nfs4_fsinfo_bitmap
[3] = { FATTR4_WORD0_MAXFILESIZE
235 | FATTR4_WORD0_MAXREAD
236 | FATTR4_WORD0_MAXWRITE
237 | FATTR4_WORD0_LEASE_TIME
,
238 FATTR4_WORD1_TIME_DELTA
239 | FATTR4_WORD1_FS_LAYOUT_TYPES
,
240 FATTR4_WORD2_LAYOUT_BLKSIZE
241 | FATTR4_WORD2_CLONE_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 static int nfs4_do_handle_exception(struct nfs_server
*server
,
348 int errorcode
, struct nfs4_exception
*exception
)
350 struct nfs_client
*clp
= server
->nfs_client
;
351 struct nfs4_state
*state
= exception
->state
;
352 struct inode
*inode
= exception
->inode
;
355 exception
->delay
= 0;
356 exception
->recovering
= 0;
357 exception
->retry
= 0;
361 case -NFS4ERR_OPENMODE
:
362 case -NFS4ERR_DELEG_REVOKED
:
363 case -NFS4ERR_ADMIN_REVOKED
:
364 case -NFS4ERR_BAD_STATEID
:
365 if (inode
&& nfs_async_inode_return_delegation(inode
,
367 goto wait_on_recovery
;
370 ret
= nfs4_schedule_stateid_recovery(server
, state
);
373 goto wait_on_recovery
;
374 case -NFS4ERR_EXPIRED
:
376 ret
= nfs4_schedule_stateid_recovery(server
, state
);
380 case -NFS4ERR_STALE_STATEID
:
381 case -NFS4ERR_STALE_CLIENTID
:
382 nfs4_schedule_lease_recovery(clp
);
383 goto wait_on_recovery
;
385 ret
= nfs4_schedule_migration_recovery(server
);
388 goto wait_on_recovery
;
389 case -NFS4ERR_LEASE_MOVED
:
390 nfs4_schedule_lease_moved_recovery(clp
);
391 goto wait_on_recovery
;
392 #if defined(CONFIG_NFS_V4_1)
393 case -NFS4ERR_BADSESSION
:
394 case -NFS4ERR_BADSLOT
:
395 case -NFS4ERR_BAD_HIGH_SLOT
:
396 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
397 case -NFS4ERR_DEADSESSION
:
398 case -NFS4ERR_SEQ_FALSE_RETRY
:
399 case -NFS4ERR_SEQ_MISORDERED
:
400 dprintk("%s ERROR: %d Reset session\n", __func__
,
402 nfs4_schedule_session_recovery(clp
->cl_session
, errorcode
);
403 goto wait_on_recovery
;
404 #endif /* defined(CONFIG_NFS_V4_1) */
405 case -NFS4ERR_FILE_OPEN
:
406 if (exception
->timeout
> HZ
) {
407 /* We have retried a decent amount, time to
414 nfs_inc_server_stats(server
, NFSIOS_DELAY
);
416 exception
->delay
= 1;
419 case -NFS4ERR_RETRY_UNCACHED_REP
:
420 case -NFS4ERR_OLD_STATEID
:
421 exception
->retry
= 1;
423 case -NFS4ERR_BADOWNER
:
424 /* The following works around a Linux server bug! */
425 case -NFS4ERR_BADNAME
:
426 if (server
->caps
& NFS_CAP_UIDGID_NOMAP
) {
427 server
->caps
&= ~NFS_CAP_UIDGID_NOMAP
;
428 exception
->retry
= 1;
429 printk(KERN_WARNING
"NFS: v4 server %s "
430 "does not accept raw "
432 "Reenabling the idmapper.\n",
433 server
->nfs_client
->cl_hostname
);
436 /* We failed to handle the error */
437 return nfs4_map_errors(ret
);
439 exception
->recovering
= 1;
443 /* This is the error handling routine for processes that are allowed
446 int nfs4_handle_exception(struct nfs_server
*server
, int errorcode
, struct nfs4_exception
*exception
)
448 struct nfs_client
*clp
= server
->nfs_client
;
451 ret
= nfs4_do_handle_exception(server
, errorcode
, exception
);
452 if (exception
->delay
) {
453 ret
= nfs4_delay(server
->client
, &exception
->timeout
);
456 if (exception
->recovering
) {
457 ret
= nfs4_wait_clnt_recover(clp
);
458 if (test_bit(NFS_MIG_FAILED
, &server
->mig_status
))
465 exception
->retry
= 1;
470 nfs4_async_handle_exception(struct rpc_task
*task
, struct nfs_server
*server
,
471 int errorcode
, struct nfs4_exception
*exception
)
473 struct nfs_client
*clp
= server
->nfs_client
;
476 ret
= nfs4_do_handle_exception(server
, errorcode
, exception
);
477 if (exception
->delay
) {
478 rpc_delay(task
, nfs4_update_delay(&exception
->timeout
));
481 if (exception
->recovering
) {
482 rpc_sleep_on(&clp
->cl_rpcwaitq
, task
, NULL
);
483 if (test_bit(NFS4CLNT_MANAGER_RUNNING
, &clp
->cl_state
) == 0)
484 rpc_wake_up_queued_task(&clp
->cl_rpcwaitq
, task
);
487 if (test_bit(NFS_MIG_FAILED
, &server
->mig_status
))
492 exception
->retry
= 1;
497 nfs4_async_handle_error(struct rpc_task
*task
, struct nfs_server
*server
,
498 struct nfs4_state
*state
, long *timeout
)
500 struct nfs4_exception exception
= {
504 if (task
->tk_status
>= 0)
507 exception
.timeout
= *timeout
;
508 task
->tk_status
= nfs4_async_handle_exception(task
, server
,
511 if (exception
.delay
&& timeout
)
512 *timeout
= exception
.timeout
;
519 * Return 'true' if 'clp' is using an rpc_client that is integrity protected
520 * or 'false' otherwise.
522 static bool _nfs4_is_integrity_protected(struct nfs_client
*clp
)
524 rpc_authflavor_t flavor
= clp
->cl_rpcclient
->cl_auth
->au_flavor
;
526 if (flavor
== RPC_AUTH_GSS_KRB5I
||
527 flavor
== RPC_AUTH_GSS_KRB5P
)
533 static void do_renew_lease(struct nfs_client
*clp
, unsigned long timestamp
)
535 spin_lock(&clp
->cl_lock
);
536 if (time_before(clp
->cl_last_renewal
,timestamp
))
537 clp
->cl_last_renewal
= timestamp
;
538 spin_unlock(&clp
->cl_lock
);
541 static void renew_lease(const struct nfs_server
*server
, unsigned long timestamp
)
543 struct nfs_client
*clp
= server
->nfs_client
;
545 if (!nfs4_has_session(clp
))
546 do_renew_lease(clp
, timestamp
);
549 struct nfs4_call_sync_data
{
550 const struct nfs_server
*seq_server
;
551 struct nfs4_sequence_args
*seq_args
;
552 struct nfs4_sequence_res
*seq_res
;
555 void nfs4_init_sequence(struct nfs4_sequence_args
*args
,
556 struct nfs4_sequence_res
*res
, int cache_reply
)
558 args
->sa_slot
= NULL
;
559 args
->sa_cache_this
= cache_reply
;
560 args
->sa_privileged
= 0;
565 static void nfs4_set_sequence_privileged(struct nfs4_sequence_args
*args
)
567 args
->sa_privileged
= 1;
570 int nfs40_setup_sequence(struct nfs4_slot_table
*tbl
,
571 struct nfs4_sequence_args
*args
,
572 struct nfs4_sequence_res
*res
,
573 struct rpc_task
*task
)
575 struct nfs4_slot
*slot
;
577 /* slot already allocated? */
578 if (res
->sr_slot
!= NULL
)
581 spin_lock(&tbl
->slot_tbl_lock
);
582 if (nfs4_slot_tbl_draining(tbl
) && !args
->sa_privileged
)
585 slot
= nfs4_alloc_slot(tbl
);
587 if (slot
== ERR_PTR(-ENOMEM
))
588 task
->tk_timeout
= HZ
>> 2;
591 spin_unlock(&tbl
->slot_tbl_lock
);
593 args
->sa_slot
= slot
;
597 rpc_call_start(task
);
601 if (args
->sa_privileged
)
602 rpc_sleep_on_priority(&tbl
->slot_tbl_waitq
, task
,
603 NULL
, RPC_PRIORITY_PRIVILEGED
);
605 rpc_sleep_on(&tbl
->slot_tbl_waitq
, task
, NULL
);
606 spin_unlock(&tbl
->slot_tbl_lock
);
609 EXPORT_SYMBOL_GPL(nfs40_setup_sequence
);
611 static int nfs40_sequence_done(struct rpc_task
*task
,
612 struct nfs4_sequence_res
*res
)
614 struct nfs4_slot
*slot
= res
->sr_slot
;
615 struct nfs4_slot_table
*tbl
;
621 spin_lock(&tbl
->slot_tbl_lock
);
622 if (!nfs41_wake_and_assign_slot(tbl
, slot
))
623 nfs4_free_slot(tbl
, slot
);
624 spin_unlock(&tbl
->slot_tbl_lock
);
631 #if defined(CONFIG_NFS_V4_1)
633 static void nfs41_sequence_free_slot(struct nfs4_sequence_res
*res
)
635 struct nfs4_session
*session
;
636 struct nfs4_slot_table
*tbl
;
637 struct nfs4_slot
*slot
= res
->sr_slot
;
638 bool send_new_highest_used_slotid
= false;
641 session
= tbl
->session
;
643 spin_lock(&tbl
->slot_tbl_lock
);
644 /* Be nice to the server: try to ensure that the last transmitted
645 * value for highest_user_slotid <= target_highest_slotid
647 if (tbl
->highest_used_slotid
> tbl
->target_highest_slotid
)
648 send_new_highest_used_slotid
= true;
650 if (nfs41_wake_and_assign_slot(tbl
, slot
)) {
651 send_new_highest_used_slotid
= false;
654 nfs4_free_slot(tbl
, slot
);
656 if (tbl
->highest_used_slotid
!= NFS4_NO_SLOT
)
657 send_new_highest_used_slotid
= false;
659 spin_unlock(&tbl
->slot_tbl_lock
);
661 if (send_new_highest_used_slotid
)
662 nfs41_notify_server(session
->clp
);
665 int nfs41_sequence_done(struct rpc_task
*task
, struct nfs4_sequence_res
*res
)
667 struct nfs4_session
*session
;
668 struct nfs4_slot
*slot
= res
->sr_slot
;
669 struct nfs_client
*clp
;
670 bool interrupted
= false;
675 /* don't increment the sequence number if the task wasn't sent */
676 if (!RPC_WAS_SENT(task
))
679 session
= slot
->table
->session
;
681 if (slot
->interrupted
) {
682 slot
->interrupted
= 0;
686 trace_nfs4_sequence_done(session
, res
);
687 /* Check the SEQUENCE operation status */
688 switch (res
->sr_status
) {
690 /* Update the slot's sequence and clientid lease timer */
693 do_renew_lease(clp
, res
->sr_timestamp
);
694 /* Check sequence flags */
695 nfs41_handle_sequence_flag_errors(clp
, res
->sr_status_flags
);
696 nfs41_update_target_slotid(slot
->table
, slot
, res
);
700 * sr_status remains 1 if an RPC level error occurred.
701 * The server may or may not have processed the sequence
703 * Mark the slot as having hosted an interrupted RPC call.
705 slot
->interrupted
= 1;
708 /* The server detected a resend of the RPC call and
709 * returned NFS4ERR_DELAY as per Section 2.10.6.2
712 dprintk("%s: slot=%u seq=%u: Operation in progress\n",
717 case -NFS4ERR_BADSLOT
:
719 * The slot id we used was probably retired. Try again
720 * using a different slot id.
723 case -NFS4ERR_SEQ_MISORDERED
:
725 * Was the last operation on this sequence interrupted?
726 * If so, retry after bumping the sequence number.
733 * Could this slot have been previously retired?
734 * If so, then the server may be expecting seq_nr = 1!
736 if (slot
->seq_nr
!= 1) {
741 case -NFS4ERR_SEQ_FALSE_RETRY
:
745 /* Just update the slot sequence no. */
749 /* The session may be reset by one of the error handlers. */
750 dprintk("%s: Error %d free the slot \n", __func__
, res
->sr_status
);
751 nfs41_sequence_free_slot(res
);
755 if (rpc_restart_call_prepare(task
)) {
761 if (!rpc_restart_call(task
))
763 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
766 EXPORT_SYMBOL_GPL(nfs41_sequence_done
);
768 int nfs4_sequence_done(struct rpc_task
*task
, struct nfs4_sequence_res
*res
)
770 if (res
->sr_slot
== NULL
)
772 if (!res
->sr_slot
->table
->session
)
773 return nfs40_sequence_done(task
, res
);
774 return nfs41_sequence_done(task
, res
);
776 EXPORT_SYMBOL_GPL(nfs4_sequence_done
);
778 int nfs41_setup_sequence(struct nfs4_session
*session
,
779 struct nfs4_sequence_args
*args
,
780 struct nfs4_sequence_res
*res
,
781 struct rpc_task
*task
)
783 struct nfs4_slot
*slot
;
784 struct nfs4_slot_table
*tbl
;
786 dprintk("--> %s\n", __func__
);
787 /* slot already allocated? */
788 if (res
->sr_slot
!= NULL
)
791 tbl
= &session
->fc_slot_table
;
793 task
->tk_timeout
= 0;
795 spin_lock(&tbl
->slot_tbl_lock
);
796 if (test_bit(NFS4_SLOT_TBL_DRAINING
, &tbl
->slot_tbl_state
) &&
797 !args
->sa_privileged
) {
798 /* The state manager will wait until the slot table is empty */
799 dprintk("%s session is draining\n", __func__
);
803 slot
= nfs4_alloc_slot(tbl
);
805 /* If out of memory, try again in 1/4 second */
806 if (slot
== ERR_PTR(-ENOMEM
))
807 task
->tk_timeout
= HZ
>> 2;
808 dprintk("<-- %s: no free slots\n", __func__
);
811 spin_unlock(&tbl
->slot_tbl_lock
);
813 args
->sa_slot
= slot
;
815 dprintk("<-- %s slotid=%u seqid=%u\n", __func__
,
816 slot
->slot_nr
, slot
->seq_nr
);
819 res
->sr_timestamp
= jiffies
;
820 res
->sr_status_flags
= 0;
822 * sr_status is only set in decode_sequence, and so will remain
823 * set to 1 if an rpc level failure occurs.
826 trace_nfs4_setup_sequence(session
, args
);
828 rpc_call_start(task
);
831 /* Privileged tasks are queued with top priority */
832 if (args
->sa_privileged
)
833 rpc_sleep_on_priority(&tbl
->slot_tbl_waitq
, task
,
834 NULL
, RPC_PRIORITY_PRIVILEGED
);
836 rpc_sleep_on(&tbl
->slot_tbl_waitq
, task
, NULL
);
837 spin_unlock(&tbl
->slot_tbl_lock
);
840 EXPORT_SYMBOL_GPL(nfs41_setup_sequence
);
842 static int nfs4_setup_sequence(const struct nfs_server
*server
,
843 struct nfs4_sequence_args
*args
,
844 struct nfs4_sequence_res
*res
,
845 struct rpc_task
*task
)
847 struct nfs4_session
*session
= nfs4_get_session(server
);
851 return nfs40_setup_sequence(server
->nfs_client
->cl_slot_tbl
,
854 dprintk("--> %s clp %p session %p sr_slot %u\n",
855 __func__
, session
->clp
, session
, res
->sr_slot
?
856 res
->sr_slot
->slot_nr
: NFS4_NO_SLOT
);
858 ret
= nfs41_setup_sequence(session
, args
, res
, task
);
860 dprintk("<-- %s status=%d\n", __func__
, ret
);
864 static void nfs41_call_sync_prepare(struct rpc_task
*task
, void *calldata
)
866 struct nfs4_call_sync_data
*data
= calldata
;
867 struct nfs4_session
*session
= nfs4_get_session(data
->seq_server
);
869 dprintk("--> %s data->seq_server %p\n", __func__
, data
->seq_server
);
871 nfs41_setup_sequence(session
, data
->seq_args
, data
->seq_res
, task
);
874 static void nfs41_call_sync_done(struct rpc_task
*task
, void *calldata
)
876 struct nfs4_call_sync_data
*data
= calldata
;
878 nfs41_sequence_done(task
, data
->seq_res
);
881 static const struct rpc_call_ops nfs41_call_sync_ops
= {
882 .rpc_call_prepare
= nfs41_call_sync_prepare
,
883 .rpc_call_done
= nfs41_call_sync_done
,
886 #else /* !CONFIG_NFS_V4_1 */
888 static int nfs4_setup_sequence(const struct nfs_server
*server
,
889 struct nfs4_sequence_args
*args
,
890 struct nfs4_sequence_res
*res
,
891 struct rpc_task
*task
)
893 return nfs40_setup_sequence(server
->nfs_client
->cl_slot_tbl
,
897 int nfs4_sequence_done(struct rpc_task
*task
,
898 struct nfs4_sequence_res
*res
)
900 return nfs40_sequence_done(task
, res
);
902 EXPORT_SYMBOL_GPL(nfs4_sequence_done
);
904 #endif /* !CONFIG_NFS_V4_1 */
906 static void nfs40_call_sync_prepare(struct rpc_task
*task
, void *calldata
)
908 struct nfs4_call_sync_data
*data
= calldata
;
909 nfs4_setup_sequence(data
->seq_server
,
910 data
->seq_args
, data
->seq_res
, task
);
913 static void nfs40_call_sync_done(struct rpc_task
*task
, void *calldata
)
915 struct nfs4_call_sync_data
*data
= calldata
;
916 nfs4_sequence_done(task
, data
->seq_res
);
919 static const struct rpc_call_ops nfs40_call_sync_ops
= {
920 .rpc_call_prepare
= nfs40_call_sync_prepare
,
921 .rpc_call_done
= nfs40_call_sync_done
,
924 static int nfs4_call_sync_sequence(struct rpc_clnt
*clnt
,
925 struct nfs_server
*server
,
926 struct rpc_message
*msg
,
927 struct nfs4_sequence_args
*args
,
928 struct nfs4_sequence_res
*res
)
931 struct rpc_task
*task
;
932 struct nfs_client
*clp
= server
->nfs_client
;
933 struct nfs4_call_sync_data data
= {
934 .seq_server
= server
,
938 struct rpc_task_setup task_setup
= {
941 .callback_ops
= clp
->cl_mvops
->call_sync_ops
,
942 .callback_data
= &data
945 task
= rpc_run_task(&task_setup
);
949 ret
= task
->tk_status
;
955 int nfs4_call_sync(struct rpc_clnt
*clnt
,
956 struct nfs_server
*server
,
957 struct rpc_message
*msg
,
958 struct nfs4_sequence_args
*args
,
959 struct nfs4_sequence_res
*res
,
962 nfs4_init_sequence(args
, res
, cache_reply
);
963 return nfs4_call_sync_sequence(clnt
, server
, msg
, args
, res
);
966 static void update_changeattr(struct inode
*dir
, struct nfs4_change_info
*cinfo
)
968 struct nfs_inode
*nfsi
= NFS_I(dir
);
970 spin_lock(&dir
->i_lock
);
971 nfsi
->cache_validity
|= NFS_INO_INVALID_ATTR
|NFS_INO_INVALID_DATA
;
972 if (!cinfo
->atomic
|| cinfo
->before
!= dir
->i_version
)
973 nfs_force_lookup_revalidate(dir
);
974 dir
->i_version
= cinfo
->after
;
975 nfsi
->attr_gencount
= nfs_inc_attr_generation_counter();
976 nfs_fscache_invalidate(dir
);
977 spin_unlock(&dir
->i_lock
);
980 struct nfs4_opendata
{
982 struct nfs_openargs o_arg
;
983 struct nfs_openres o_res
;
984 struct nfs_open_confirmargs c_arg
;
985 struct nfs_open_confirmres c_res
;
986 struct nfs4_string owner_name
;
987 struct nfs4_string group_name
;
988 struct nfs4_label
*a_label
;
989 struct nfs_fattr f_attr
;
990 struct nfs4_label
*f_label
;
992 struct dentry
*dentry
;
993 struct nfs4_state_owner
*owner
;
994 struct nfs4_state
*state
;
996 unsigned long timestamp
;
997 unsigned int rpc_done
: 1;
998 unsigned int file_created
: 1;
999 unsigned int is_recover
: 1;
1004 static bool nfs4_clear_cap_atomic_open_v1(struct nfs_server
*server
,
1005 int err
, struct nfs4_exception
*exception
)
1009 if (!(server
->caps
& NFS_CAP_ATOMIC_OPEN_V1
))
1011 server
->caps
&= ~NFS_CAP_ATOMIC_OPEN_V1
;
1012 exception
->retry
= 1;
1017 nfs4_map_atomic_open_share(struct nfs_server
*server
,
1018 fmode_t fmode
, int openflags
)
1022 switch (fmode
& (FMODE_READ
| FMODE_WRITE
)) {
1024 res
= NFS4_SHARE_ACCESS_READ
;
1027 res
= NFS4_SHARE_ACCESS_WRITE
;
1029 case FMODE_READ
|FMODE_WRITE
:
1030 res
= NFS4_SHARE_ACCESS_BOTH
;
1032 if (!(server
->caps
& NFS_CAP_ATOMIC_OPEN_V1
))
1034 /* Want no delegation if we're using O_DIRECT */
1035 if (openflags
& O_DIRECT
)
1036 res
|= NFS4_SHARE_WANT_NO_DELEG
;
1041 static enum open_claim_type4
1042 nfs4_map_atomic_open_claim(struct nfs_server
*server
,
1043 enum open_claim_type4 claim
)
1045 if (server
->caps
& NFS_CAP_ATOMIC_OPEN_V1
)
1050 case NFS4_OPEN_CLAIM_FH
:
1051 return NFS4_OPEN_CLAIM_NULL
;
1052 case NFS4_OPEN_CLAIM_DELEG_CUR_FH
:
1053 return NFS4_OPEN_CLAIM_DELEGATE_CUR
;
1054 case NFS4_OPEN_CLAIM_DELEG_PREV_FH
:
1055 return NFS4_OPEN_CLAIM_DELEGATE_PREV
;
1059 static void nfs4_init_opendata_res(struct nfs4_opendata
*p
)
1061 p
->o_res
.f_attr
= &p
->f_attr
;
1062 p
->o_res
.f_label
= p
->f_label
;
1063 p
->o_res
.seqid
= p
->o_arg
.seqid
;
1064 p
->c_res
.seqid
= p
->c_arg
.seqid
;
1065 p
->o_res
.server
= p
->o_arg
.server
;
1066 p
->o_res
.access_request
= p
->o_arg
.access
;
1067 nfs_fattr_init(&p
->f_attr
);
1068 nfs_fattr_init_names(&p
->f_attr
, &p
->owner_name
, &p
->group_name
);
1071 static struct nfs4_opendata
*nfs4_opendata_alloc(struct dentry
*dentry
,
1072 struct nfs4_state_owner
*sp
, fmode_t fmode
, int flags
,
1073 const struct iattr
*attrs
,
1074 struct nfs4_label
*label
,
1075 enum open_claim_type4 claim
,
1078 struct dentry
*parent
= dget_parent(dentry
);
1079 struct inode
*dir
= d_inode(parent
);
1080 struct nfs_server
*server
= NFS_SERVER(dir
);
1081 struct nfs_seqid
*(*alloc_seqid
)(struct nfs_seqid_counter
*, gfp_t
);
1082 struct nfs4_opendata
*p
;
1084 p
= kzalloc(sizeof(*p
), gfp_mask
);
1088 p
->f_label
= nfs4_label_alloc(server
, gfp_mask
);
1089 if (IS_ERR(p
->f_label
))
1092 p
->a_label
= nfs4_label_alloc(server
, gfp_mask
);
1093 if (IS_ERR(p
->a_label
))
1096 alloc_seqid
= server
->nfs_client
->cl_mvops
->alloc_seqid
;
1097 p
->o_arg
.seqid
= alloc_seqid(&sp
->so_seqid
, gfp_mask
);
1098 if (IS_ERR(p
->o_arg
.seqid
))
1099 goto err_free_label
;
1100 nfs_sb_active(dentry
->d_sb
);
1101 p
->dentry
= dget(dentry
);
1104 atomic_inc(&sp
->so_count
);
1105 p
->o_arg
.open_flags
= flags
;
1106 p
->o_arg
.fmode
= fmode
& (FMODE_READ
|FMODE_WRITE
);
1107 p
->o_arg
.share_access
= nfs4_map_atomic_open_share(server
,
1109 /* don't put an ACCESS op in OPEN compound if O_EXCL, because ACCESS
1110 * will return permission denied for all bits until close */
1111 if (!(flags
& O_EXCL
)) {
1112 /* ask server to check for all possible rights as results
1114 p
->o_arg
.access
= NFS4_ACCESS_READ
| NFS4_ACCESS_MODIFY
|
1115 NFS4_ACCESS_EXTEND
| NFS4_ACCESS_EXECUTE
;
1117 p
->o_arg
.clientid
= server
->nfs_client
->cl_clientid
;
1118 p
->o_arg
.id
.create_time
= ktime_to_ns(sp
->so_seqid
.create_time
);
1119 p
->o_arg
.id
.uniquifier
= sp
->so_seqid
.owner_id
;
1120 p
->o_arg
.name
= &dentry
->d_name
;
1121 p
->o_arg
.server
= server
;
1122 p
->o_arg
.bitmask
= nfs4_bitmask(server
, label
);
1123 p
->o_arg
.open_bitmap
= &nfs4_fattr_bitmap
[0];
1124 p
->o_arg
.label
= nfs4_label_copy(p
->a_label
, label
);
1125 p
->o_arg
.claim
= nfs4_map_atomic_open_claim(server
, claim
);
1126 switch (p
->o_arg
.claim
) {
1127 case NFS4_OPEN_CLAIM_NULL
:
1128 case NFS4_OPEN_CLAIM_DELEGATE_CUR
:
1129 case NFS4_OPEN_CLAIM_DELEGATE_PREV
:
1130 p
->o_arg
.fh
= NFS_FH(dir
);
1132 case NFS4_OPEN_CLAIM_PREVIOUS
:
1133 case NFS4_OPEN_CLAIM_FH
:
1134 case NFS4_OPEN_CLAIM_DELEG_CUR_FH
:
1135 case NFS4_OPEN_CLAIM_DELEG_PREV_FH
:
1136 p
->o_arg
.fh
= NFS_FH(d_inode(dentry
));
1138 if (attrs
!= NULL
&& attrs
->ia_valid
!= 0) {
1141 p
->o_arg
.u
.attrs
= &p
->attrs
;
1142 memcpy(&p
->attrs
, attrs
, sizeof(p
->attrs
));
1145 verf
[1] = current
->pid
;
1146 memcpy(p
->o_arg
.u
.verifier
.data
, verf
,
1147 sizeof(p
->o_arg
.u
.verifier
.data
));
1149 p
->c_arg
.fh
= &p
->o_res
.fh
;
1150 p
->c_arg
.stateid
= &p
->o_res
.stateid
;
1151 p
->c_arg
.seqid
= p
->o_arg
.seqid
;
1152 nfs4_init_opendata_res(p
);
1153 kref_init(&p
->kref
);
1157 nfs4_label_free(p
->a_label
);
1159 nfs4_label_free(p
->f_label
);
1167 static void nfs4_opendata_free(struct kref
*kref
)
1169 struct nfs4_opendata
*p
= container_of(kref
,
1170 struct nfs4_opendata
, kref
);
1171 struct super_block
*sb
= p
->dentry
->d_sb
;
1173 nfs_free_seqid(p
->o_arg
.seqid
);
1174 if (p
->state
!= NULL
)
1175 nfs4_put_open_state(p
->state
);
1176 nfs4_put_state_owner(p
->owner
);
1178 nfs4_label_free(p
->a_label
);
1179 nfs4_label_free(p
->f_label
);
1183 nfs_sb_deactive(sb
);
1184 nfs_fattr_free_names(&p
->f_attr
);
1185 kfree(p
->f_attr
.mdsthreshold
);
1189 static void nfs4_opendata_put(struct nfs4_opendata
*p
)
1192 kref_put(&p
->kref
, nfs4_opendata_free
);
1195 static int nfs4_wait_for_completion_rpc_task(struct rpc_task
*task
)
1199 ret
= rpc_wait_for_completion_task(task
);
1203 static bool nfs4_mode_match_open_stateid(struct nfs4_state
*state
,
1206 switch(fmode
& (FMODE_READ
|FMODE_WRITE
)) {
1207 case FMODE_READ
|FMODE_WRITE
:
1208 return state
->n_rdwr
!= 0;
1210 return state
->n_wronly
!= 0;
1212 return state
->n_rdonly
!= 0;
1218 static int can_open_cached(struct nfs4_state
*state
, fmode_t mode
, int open_mode
)
1222 if (open_mode
& (O_EXCL
|O_TRUNC
))
1224 switch (mode
& (FMODE_READ
|FMODE_WRITE
)) {
1226 ret
|= test_bit(NFS_O_RDONLY_STATE
, &state
->flags
) != 0
1227 && state
->n_rdonly
!= 0;
1230 ret
|= test_bit(NFS_O_WRONLY_STATE
, &state
->flags
) != 0
1231 && state
->n_wronly
!= 0;
1233 case FMODE_READ
|FMODE_WRITE
:
1234 ret
|= test_bit(NFS_O_RDWR_STATE
, &state
->flags
) != 0
1235 && state
->n_rdwr
!= 0;
1241 static int can_open_delegated(struct nfs_delegation
*delegation
, fmode_t fmode
,
1242 enum open_claim_type4 claim
)
1244 if (delegation
== NULL
)
1246 if ((delegation
->type
& fmode
) != fmode
)
1248 if (test_bit(NFS_DELEGATION_RETURNING
, &delegation
->flags
))
1251 case NFS4_OPEN_CLAIM_NULL
:
1252 case NFS4_OPEN_CLAIM_FH
:
1254 case NFS4_OPEN_CLAIM_PREVIOUS
:
1255 if (!test_bit(NFS_DELEGATION_NEED_RECLAIM
, &delegation
->flags
))
1260 nfs_mark_delegation_referenced(delegation
);
1264 static void update_open_stateflags(struct nfs4_state
*state
, fmode_t fmode
)
1273 case FMODE_READ
|FMODE_WRITE
:
1276 nfs4_state_set_mode_locked(state
, state
->state
| fmode
);
1279 static void nfs_test_and_clear_all_open_stateid(struct nfs4_state
*state
)
1281 struct nfs_client
*clp
= state
->owner
->so_server
->nfs_client
;
1282 bool need_recover
= false;
1284 if (test_and_clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
) && state
->n_rdonly
)
1285 need_recover
= true;
1286 if (test_and_clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
) && state
->n_wronly
)
1287 need_recover
= true;
1288 if (test_and_clear_bit(NFS_O_RDWR_STATE
, &state
->flags
) && state
->n_rdwr
)
1289 need_recover
= true;
1291 nfs4_state_mark_reclaim_nograce(clp
, state
);
1294 static bool nfs_need_update_open_stateid(struct nfs4_state
*state
,
1295 nfs4_stateid
*stateid
)
1297 if (test_and_set_bit(NFS_OPEN_STATE
, &state
->flags
) == 0)
1299 if (!nfs4_stateid_match_other(stateid
, &state
->open_stateid
)) {
1300 nfs_test_and_clear_all_open_stateid(state
);
1303 if (nfs4_stateid_is_newer(stateid
, &state
->open_stateid
))
1308 static void nfs_resync_open_stateid_locked(struct nfs4_state
*state
)
1310 if (!(state
->n_wronly
|| state
->n_rdonly
|| state
->n_rdwr
))
1312 if (state
->n_wronly
)
1313 set_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1314 if (state
->n_rdonly
)
1315 set_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1317 set_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1318 set_bit(NFS_OPEN_STATE
, &state
->flags
);
1321 static void nfs_clear_open_stateid_locked(struct nfs4_state
*state
,
1322 nfs4_stateid
*arg_stateid
,
1323 nfs4_stateid
*stateid
, fmode_t fmode
)
1325 clear_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1326 switch (fmode
& (FMODE_READ
|FMODE_WRITE
)) {
1328 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1331 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1334 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1335 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1336 clear_bit(NFS_OPEN_STATE
, &state
->flags
);
1338 if (stateid
== NULL
)
1340 /* Handle races with OPEN */
1341 if (!nfs4_stateid_match_other(arg_stateid
, &state
->open_stateid
) ||
1342 (nfs4_stateid_match_other(stateid
, &state
->open_stateid
) &&
1343 !nfs4_stateid_is_newer(stateid
, &state
->open_stateid
))) {
1344 nfs_resync_open_stateid_locked(state
);
1347 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0)
1348 nfs4_stateid_copy(&state
->stateid
, stateid
);
1349 nfs4_stateid_copy(&state
->open_stateid
, stateid
);
1352 static void nfs_clear_open_stateid(struct nfs4_state
*state
,
1353 nfs4_stateid
*arg_stateid
,
1354 nfs4_stateid
*stateid
, fmode_t fmode
)
1356 write_seqlock(&state
->seqlock
);
1357 nfs_clear_open_stateid_locked(state
, arg_stateid
, stateid
, fmode
);
1358 write_sequnlock(&state
->seqlock
);
1359 if (test_bit(NFS_STATE_RECLAIM_NOGRACE
, &state
->flags
))
1360 nfs4_schedule_state_manager(state
->owner
->so_server
->nfs_client
);
1363 static void nfs_set_open_stateid_locked(struct nfs4_state
*state
, nfs4_stateid
*stateid
, fmode_t fmode
)
1367 set_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1370 set_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1372 case FMODE_READ
|FMODE_WRITE
:
1373 set_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1375 if (!nfs_need_update_open_stateid(state
, stateid
))
1377 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0)
1378 nfs4_stateid_copy(&state
->stateid
, stateid
);
1379 nfs4_stateid_copy(&state
->open_stateid
, stateid
);
1382 static void __update_open_stateid(struct nfs4_state
*state
, nfs4_stateid
*open_stateid
, const nfs4_stateid
*deleg_stateid
, fmode_t fmode
)
1385 * Protect the call to nfs4_state_set_mode_locked and
1386 * serialise the stateid update
1388 write_seqlock(&state
->seqlock
);
1389 if (deleg_stateid
!= NULL
) {
1390 nfs4_stateid_copy(&state
->stateid
, deleg_stateid
);
1391 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1393 if (open_stateid
!= NULL
)
1394 nfs_set_open_stateid_locked(state
, open_stateid
, fmode
);
1395 write_sequnlock(&state
->seqlock
);
1396 spin_lock(&state
->owner
->so_lock
);
1397 update_open_stateflags(state
, fmode
);
1398 spin_unlock(&state
->owner
->so_lock
);
1401 static int update_open_stateid(struct nfs4_state
*state
, nfs4_stateid
*open_stateid
, nfs4_stateid
*delegation
, fmode_t fmode
)
1403 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
1404 struct nfs_delegation
*deleg_cur
;
1407 fmode
&= (FMODE_READ
|FMODE_WRITE
);
1410 deleg_cur
= rcu_dereference(nfsi
->delegation
);
1411 if (deleg_cur
== NULL
)
1414 spin_lock(&deleg_cur
->lock
);
1415 if (rcu_dereference(nfsi
->delegation
) != deleg_cur
||
1416 test_bit(NFS_DELEGATION_RETURNING
, &deleg_cur
->flags
) ||
1417 (deleg_cur
->type
& fmode
) != fmode
)
1418 goto no_delegation_unlock
;
1420 if (delegation
== NULL
)
1421 delegation
= &deleg_cur
->stateid
;
1422 else if (!nfs4_stateid_match(&deleg_cur
->stateid
, delegation
))
1423 goto no_delegation_unlock
;
1425 nfs_mark_delegation_referenced(deleg_cur
);
1426 __update_open_stateid(state
, open_stateid
, &deleg_cur
->stateid
, fmode
);
1428 no_delegation_unlock
:
1429 spin_unlock(&deleg_cur
->lock
);
1433 if (!ret
&& open_stateid
!= NULL
) {
1434 __update_open_stateid(state
, open_stateid
, NULL
, fmode
);
1437 if (test_bit(NFS_STATE_RECLAIM_NOGRACE
, &state
->flags
))
1438 nfs4_schedule_state_manager(state
->owner
->so_server
->nfs_client
);
1443 static bool nfs4_update_lock_stateid(struct nfs4_lock_state
*lsp
,
1444 const nfs4_stateid
*stateid
)
1446 struct nfs4_state
*state
= lsp
->ls_state
;
1449 spin_lock(&state
->state_lock
);
1450 if (!nfs4_stateid_match_other(stateid
, &lsp
->ls_stateid
))
1452 if (!nfs4_stateid_is_newer(stateid
, &lsp
->ls_stateid
))
1454 nfs4_stateid_copy(&lsp
->ls_stateid
, stateid
);
1457 spin_unlock(&state
->state_lock
);
1461 static void nfs4_return_incompatible_delegation(struct inode
*inode
, fmode_t fmode
)
1463 struct nfs_delegation
*delegation
;
1466 delegation
= rcu_dereference(NFS_I(inode
)->delegation
);
1467 if (delegation
== NULL
|| (delegation
->type
& fmode
) == fmode
) {
1472 nfs4_inode_return_delegation(inode
);
1475 static struct nfs4_state
*nfs4_try_open_cached(struct nfs4_opendata
*opendata
)
1477 struct nfs4_state
*state
= opendata
->state
;
1478 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
1479 struct nfs_delegation
*delegation
;
1480 int open_mode
= opendata
->o_arg
.open_flags
;
1481 fmode_t fmode
= opendata
->o_arg
.fmode
;
1482 enum open_claim_type4 claim
= opendata
->o_arg
.claim
;
1483 nfs4_stateid stateid
;
1487 spin_lock(&state
->owner
->so_lock
);
1488 if (can_open_cached(state
, fmode
, open_mode
)) {
1489 update_open_stateflags(state
, fmode
);
1490 spin_unlock(&state
->owner
->so_lock
);
1491 goto out_return_state
;
1493 spin_unlock(&state
->owner
->so_lock
);
1495 delegation
= rcu_dereference(nfsi
->delegation
);
1496 if (!can_open_delegated(delegation
, fmode
, claim
)) {
1500 /* Save the delegation */
1501 nfs4_stateid_copy(&stateid
, &delegation
->stateid
);
1503 nfs_release_seqid(opendata
->o_arg
.seqid
);
1504 if (!opendata
->is_recover
) {
1505 ret
= nfs_may_open(state
->inode
, state
->owner
->so_cred
, open_mode
);
1511 /* Try to update the stateid using the delegation */
1512 if (update_open_stateid(state
, NULL
, &stateid
, fmode
))
1513 goto out_return_state
;
1516 return ERR_PTR(ret
);
1518 atomic_inc(&state
->count
);
1523 nfs4_opendata_check_deleg(struct nfs4_opendata
*data
, struct nfs4_state
*state
)
1525 struct nfs_client
*clp
= NFS_SERVER(state
->inode
)->nfs_client
;
1526 struct nfs_delegation
*delegation
;
1527 int delegation_flags
= 0;
1530 delegation
= rcu_dereference(NFS_I(state
->inode
)->delegation
);
1532 delegation_flags
= delegation
->flags
;
1534 switch (data
->o_arg
.claim
) {
1537 case NFS4_OPEN_CLAIM_DELEGATE_CUR
:
1538 case NFS4_OPEN_CLAIM_DELEG_CUR_FH
:
1539 pr_err_ratelimited("NFS: Broken NFSv4 server %s is "
1540 "returning a delegation for "
1541 "OPEN(CLAIM_DELEGATE_CUR)\n",
1545 if ((delegation_flags
& 1UL<<NFS_DELEGATION_NEED_RECLAIM
) == 0)
1546 nfs_inode_set_delegation(state
->inode
,
1547 data
->owner
->so_cred
,
1550 nfs_inode_reclaim_delegation(state
->inode
,
1551 data
->owner
->so_cred
,
1556 * Check the inode attributes against the CLAIM_PREVIOUS returned attributes
1557 * and update the nfs4_state.
1559 static struct nfs4_state
*
1560 _nfs4_opendata_reclaim_to_nfs4_state(struct nfs4_opendata
*data
)
1562 struct inode
*inode
= data
->state
->inode
;
1563 struct nfs4_state
*state
= data
->state
;
1566 if (!data
->rpc_done
) {
1567 if (data
->rpc_status
) {
1568 ret
= data
->rpc_status
;
1571 /* cached opens have already been processed */
1575 ret
= nfs_refresh_inode(inode
, &data
->f_attr
);
1579 if (data
->o_res
.delegation_type
!= 0)
1580 nfs4_opendata_check_deleg(data
, state
);
1582 update_open_stateid(state
, &data
->o_res
.stateid
, NULL
,
1584 atomic_inc(&state
->count
);
1588 return ERR_PTR(ret
);
1592 static struct nfs4_state
*
1593 _nfs4_opendata_to_nfs4_state(struct nfs4_opendata
*data
)
1595 struct inode
*inode
;
1596 struct nfs4_state
*state
= NULL
;
1599 if (!data
->rpc_done
) {
1600 state
= nfs4_try_open_cached(data
);
1601 trace_nfs4_cached_open(data
->state
);
1606 if (!(data
->f_attr
.valid
& NFS_ATTR_FATTR
))
1608 inode
= nfs_fhget(data
->dir
->d_sb
, &data
->o_res
.fh
, &data
->f_attr
, data
->f_label
);
1609 ret
= PTR_ERR(inode
);
1613 state
= nfs4_get_open_state(inode
, data
->owner
);
1616 if (data
->o_res
.delegation_type
!= 0)
1617 nfs4_opendata_check_deleg(data
, state
);
1618 update_open_stateid(state
, &data
->o_res
.stateid
, NULL
,
1622 nfs_release_seqid(data
->o_arg
.seqid
);
1627 return ERR_PTR(ret
);
1630 static struct nfs4_state
*
1631 nfs4_opendata_to_nfs4_state(struct nfs4_opendata
*data
)
1633 if (data
->o_arg
.claim
== NFS4_OPEN_CLAIM_PREVIOUS
)
1634 return _nfs4_opendata_reclaim_to_nfs4_state(data
);
1635 return _nfs4_opendata_to_nfs4_state(data
);
1638 static struct nfs_open_context
*nfs4_state_find_open_context(struct nfs4_state
*state
)
1640 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
1641 struct nfs_open_context
*ctx
;
1643 spin_lock(&state
->inode
->i_lock
);
1644 list_for_each_entry(ctx
, &nfsi
->open_files
, list
) {
1645 if (ctx
->state
!= state
)
1647 get_nfs_open_context(ctx
);
1648 spin_unlock(&state
->inode
->i_lock
);
1651 spin_unlock(&state
->inode
->i_lock
);
1652 return ERR_PTR(-ENOENT
);
1655 static struct nfs4_opendata
*nfs4_open_recoverdata_alloc(struct nfs_open_context
*ctx
,
1656 struct nfs4_state
*state
, enum open_claim_type4 claim
)
1658 struct nfs4_opendata
*opendata
;
1660 opendata
= nfs4_opendata_alloc(ctx
->dentry
, state
->owner
, 0, 0,
1661 NULL
, NULL
, claim
, GFP_NOFS
);
1662 if (opendata
== NULL
)
1663 return ERR_PTR(-ENOMEM
);
1664 opendata
->state
= state
;
1665 atomic_inc(&state
->count
);
1669 static int nfs4_open_recover_helper(struct nfs4_opendata
*opendata
,
1672 struct nfs4_state
*newstate
;
1675 if (!nfs4_mode_match_open_stateid(opendata
->state
, fmode
))
1677 opendata
->o_arg
.open_flags
= 0;
1678 opendata
->o_arg
.fmode
= fmode
;
1679 opendata
->o_arg
.share_access
= nfs4_map_atomic_open_share(
1680 NFS_SB(opendata
->dentry
->d_sb
),
1682 memset(&opendata
->o_res
, 0, sizeof(opendata
->o_res
));
1683 memset(&opendata
->c_res
, 0, sizeof(opendata
->c_res
));
1684 nfs4_init_opendata_res(opendata
);
1685 ret
= _nfs4_recover_proc_open(opendata
);
1688 newstate
= nfs4_opendata_to_nfs4_state(opendata
);
1689 if (IS_ERR(newstate
))
1690 return PTR_ERR(newstate
);
1691 if (newstate
!= opendata
->state
)
1693 nfs4_close_state(newstate
, fmode
);
1697 static int nfs4_open_recover(struct nfs4_opendata
*opendata
, struct nfs4_state
*state
)
1701 /* Don't trigger recovery in nfs_test_and_clear_all_open_stateid */
1702 clear_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1703 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1704 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1705 /* memory barrier prior to reading state->n_* */
1706 clear_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1707 clear_bit(NFS_OPEN_STATE
, &state
->flags
);
1709 ret
= nfs4_open_recover_helper(opendata
, FMODE_READ
|FMODE_WRITE
);
1712 ret
= nfs4_open_recover_helper(opendata
, FMODE_WRITE
);
1715 ret
= nfs4_open_recover_helper(opendata
, FMODE_READ
);
1719 * We may have performed cached opens for all three recoveries.
1720 * Check if we need to update the current stateid.
1722 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0 &&
1723 !nfs4_stateid_match(&state
->stateid
, &state
->open_stateid
)) {
1724 write_seqlock(&state
->seqlock
);
1725 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0)
1726 nfs4_stateid_copy(&state
->stateid
, &state
->open_stateid
);
1727 write_sequnlock(&state
->seqlock
);
1734 * reclaim state on the server after a reboot.
1736 static int _nfs4_do_open_reclaim(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1738 struct nfs_delegation
*delegation
;
1739 struct nfs4_opendata
*opendata
;
1740 fmode_t delegation_type
= 0;
1743 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
,
1744 NFS4_OPEN_CLAIM_PREVIOUS
);
1745 if (IS_ERR(opendata
))
1746 return PTR_ERR(opendata
);
1748 delegation
= rcu_dereference(NFS_I(state
->inode
)->delegation
);
1749 if (delegation
!= NULL
&& test_bit(NFS_DELEGATION_NEED_RECLAIM
, &delegation
->flags
) != 0)
1750 delegation_type
= delegation
->type
;
1752 opendata
->o_arg
.u
.delegation_type
= delegation_type
;
1753 status
= nfs4_open_recover(opendata
, state
);
1754 nfs4_opendata_put(opendata
);
1758 static int nfs4_do_open_reclaim(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1760 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1761 struct nfs4_exception exception
= { };
1764 err
= _nfs4_do_open_reclaim(ctx
, state
);
1765 trace_nfs4_open_reclaim(ctx
, 0, err
);
1766 if (nfs4_clear_cap_atomic_open_v1(server
, err
, &exception
))
1768 if (err
!= -NFS4ERR_DELAY
)
1770 nfs4_handle_exception(server
, err
, &exception
);
1771 } while (exception
.retry
);
1775 static int nfs4_open_reclaim(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
1777 struct nfs_open_context
*ctx
;
1780 ctx
= nfs4_state_find_open_context(state
);
1783 ret
= nfs4_do_open_reclaim(ctx
, state
);
1784 put_nfs_open_context(ctx
);
1788 static int nfs4_handle_delegation_recall_error(struct nfs_server
*server
, struct nfs4_state
*state
, const nfs4_stateid
*stateid
, int err
)
1792 printk(KERN_ERR
"NFS: %s: unhandled error "
1793 "%d.\n", __func__
, err
);
1799 case -NFS4ERR_BADSESSION
:
1800 case -NFS4ERR_BADSLOT
:
1801 case -NFS4ERR_BAD_HIGH_SLOT
:
1802 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
1803 case -NFS4ERR_DEADSESSION
:
1804 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1805 nfs4_schedule_session_recovery(server
->nfs_client
->cl_session
, err
);
1807 case -NFS4ERR_STALE_CLIENTID
:
1808 case -NFS4ERR_STALE_STATEID
:
1809 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1810 case -NFS4ERR_EXPIRED
:
1811 /* Don't recall a delegation if it was lost */
1812 nfs4_schedule_lease_recovery(server
->nfs_client
);
1814 case -NFS4ERR_MOVED
:
1815 nfs4_schedule_migration_recovery(server
);
1817 case -NFS4ERR_LEASE_MOVED
:
1818 nfs4_schedule_lease_moved_recovery(server
->nfs_client
);
1820 case -NFS4ERR_DELEG_REVOKED
:
1821 case -NFS4ERR_ADMIN_REVOKED
:
1822 case -NFS4ERR_BAD_STATEID
:
1823 case -NFS4ERR_OPENMODE
:
1824 nfs_inode_find_state_and_recover(state
->inode
,
1826 nfs4_schedule_stateid_recovery(server
, state
);
1828 case -NFS4ERR_DELAY
:
1829 case -NFS4ERR_GRACE
:
1830 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1834 case -NFS4ERR_DENIED
:
1835 /* kill_proc(fl->fl_pid, SIGLOST, 1); */
1841 int nfs4_open_delegation_recall(struct nfs_open_context
*ctx
,
1842 struct nfs4_state
*state
, const nfs4_stateid
*stateid
,
1845 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1846 struct nfs4_opendata
*opendata
;
1849 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
,
1850 NFS4_OPEN_CLAIM_DELEG_CUR_FH
);
1851 if (IS_ERR(opendata
))
1852 return PTR_ERR(opendata
);
1853 nfs4_stateid_copy(&opendata
->o_arg
.u
.delegation
, stateid
);
1854 write_seqlock(&state
->seqlock
);
1855 nfs4_stateid_copy(&state
->stateid
, &state
->open_stateid
);
1856 write_sequnlock(&state
->seqlock
);
1857 clear_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1858 switch (type
& (FMODE_READ
|FMODE_WRITE
)) {
1859 case FMODE_READ
|FMODE_WRITE
:
1861 err
= nfs4_open_recover_helper(opendata
, FMODE_READ
|FMODE_WRITE
);
1864 err
= nfs4_open_recover_helper(opendata
, FMODE_WRITE
);
1868 err
= nfs4_open_recover_helper(opendata
, FMODE_READ
);
1870 nfs4_opendata_put(opendata
);
1871 return nfs4_handle_delegation_recall_error(server
, state
, stateid
, err
);
1874 static void nfs4_open_confirm_prepare(struct rpc_task
*task
, void *calldata
)
1876 struct nfs4_opendata
*data
= calldata
;
1878 nfs40_setup_sequence(data
->o_arg
.server
->nfs_client
->cl_slot_tbl
,
1879 &data
->c_arg
.seq_args
, &data
->c_res
.seq_res
, task
);
1882 static void nfs4_open_confirm_done(struct rpc_task
*task
, void *calldata
)
1884 struct nfs4_opendata
*data
= calldata
;
1886 nfs40_sequence_done(task
, &data
->c_res
.seq_res
);
1888 data
->rpc_status
= task
->tk_status
;
1889 if (data
->rpc_status
== 0) {
1890 nfs4_stateid_copy(&data
->o_res
.stateid
, &data
->c_res
.stateid
);
1891 nfs_confirm_seqid(&data
->owner
->so_seqid
, 0);
1892 renew_lease(data
->o_res
.server
, data
->timestamp
);
1897 static void nfs4_open_confirm_release(void *calldata
)
1899 struct nfs4_opendata
*data
= calldata
;
1900 struct nfs4_state
*state
= NULL
;
1902 /* If this request hasn't been cancelled, do nothing */
1903 if (data
->cancelled
== 0)
1905 /* In case of error, no cleanup! */
1906 if (!data
->rpc_done
)
1908 state
= nfs4_opendata_to_nfs4_state(data
);
1910 nfs4_close_state(state
, data
->o_arg
.fmode
);
1912 nfs4_opendata_put(data
);
1915 static const struct rpc_call_ops nfs4_open_confirm_ops
= {
1916 .rpc_call_prepare
= nfs4_open_confirm_prepare
,
1917 .rpc_call_done
= nfs4_open_confirm_done
,
1918 .rpc_release
= nfs4_open_confirm_release
,
1922 * Note: On error, nfs4_proc_open_confirm will free the struct nfs4_opendata
1924 static int _nfs4_proc_open_confirm(struct nfs4_opendata
*data
)
1926 struct nfs_server
*server
= NFS_SERVER(d_inode(data
->dir
));
1927 struct rpc_task
*task
;
1928 struct rpc_message msg
= {
1929 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_CONFIRM
],
1930 .rpc_argp
= &data
->c_arg
,
1931 .rpc_resp
= &data
->c_res
,
1932 .rpc_cred
= data
->owner
->so_cred
,
1934 struct rpc_task_setup task_setup_data
= {
1935 .rpc_client
= server
->client
,
1936 .rpc_message
= &msg
,
1937 .callback_ops
= &nfs4_open_confirm_ops
,
1938 .callback_data
= data
,
1939 .workqueue
= nfsiod_workqueue
,
1940 .flags
= RPC_TASK_ASYNC
,
1944 nfs4_init_sequence(&data
->c_arg
.seq_args
, &data
->c_res
.seq_res
, 1);
1945 kref_get(&data
->kref
);
1947 data
->rpc_status
= 0;
1948 data
->timestamp
= jiffies
;
1949 if (data
->is_recover
)
1950 nfs4_set_sequence_privileged(&data
->c_arg
.seq_args
);
1951 task
= rpc_run_task(&task_setup_data
);
1953 return PTR_ERR(task
);
1954 status
= nfs4_wait_for_completion_rpc_task(task
);
1956 data
->cancelled
= 1;
1959 status
= data
->rpc_status
;
1964 static void nfs4_open_prepare(struct rpc_task
*task
, void *calldata
)
1966 struct nfs4_opendata
*data
= calldata
;
1967 struct nfs4_state_owner
*sp
= data
->owner
;
1968 struct nfs_client
*clp
= sp
->so_server
->nfs_client
;
1969 enum open_claim_type4 claim
= data
->o_arg
.claim
;
1971 if (nfs_wait_on_sequence(data
->o_arg
.seqid
, task
) != 0)
1974 * Check if we still need to send an OPEN call, or if we can use
1975 * a delegation instead.
1977 if (data
->state
!= NULL
) {
1978 struct nfs_delegation
*delegation
;
1980 if (can_open_cached(data
->state
, data
->o_arg
.fmode
, data
->o_arg
.open_flags
))
1983 delegation
= rcu_dereference(NFS_I(data
->state
->inode
)->delegation
);
1984 if (can_open_delegated(delegation
, data
->o_arg
.fmode
, claim
))
1985 goto unlock_no_action
;
1988 /* Update client id. */
1989 data
->o_arg
.clientid
= clp
->cl_clientid
;
1993 case NFS4_OPEN_CLAIM_PREVIOUS
:
1994 case NFS4_OPEN_CLAIM_DELEG_CUR_FH
:
1995 case NFS4_OPEN_CLAIM_DELEG_PREV_FH
:
1996 data
->o_arg
.open_bitmap
= &nfs4_open_noattr_bitmap
[0];
1997 case NFS4_OPEN_CLAIM_FH
:
1998 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_NOATTR
];
1999 nfs_copy_fh(&data
->o_res
.fh
, data
->o_arg
.fh
);
2001 data
->timestamp
= jiffies
;
2002 if (nfs4_setup_sequence(data
->o_arg
.server
,
2003 &data
->o_arg
.seq_args
,
2004 &data
->o_res
.seq_res
,
2006 nfs_release_seqid(data
->o_arg
.seqid
);
2008 /* Set the create mode (note dependency on the session type) */
2009 data
->o_arg
.createmode
= NFS4_CREATE_UNCHECKED
;
2010 if (data
->o_arg
.open_flags
& O_EXCL
) {
2011 data
->o_arg
.createmode
= NFS4_CREATE_EXCLUSIVE
;
2012 if (nfs4_has_persistent_session(clp
))
2013 data
->o_arg
.createmode
= NFS4_CREATE_GUARDED
;
2014 else if (clp
->cl_mvops
->minor_version
> 0)
2015 data
->o_arg
.createmode
= NFS4_CREATE_EXCLUSIVE4_1
;
2019 trace_nfs4_cached_open(data
->state
);
2022 task
->tk_action
= NULL
;
2024 nfs4_sequence_done(task
, &data
->o_res
.seq_res
);
2027 static void nfs4_open_done(struct rpc_task
*task
, void *calldata
)
2029 struct nfs4_opendata
*data
= calldata
;
2031 data
->rpc_status
= task
->tk_status
;
2033 if (!nfs4_sequence_done(task
, &data
->o_res
.seq_res
))
2036 if (task
->tk_status
== 0) {
2037 if (data
->o_res
.f_attr
->valid
& NFS_ATTR_FATTR_TYPE
) {
2038 switch (data
->o_res
.f_attr
->mode
& S_IFMT
) {
2042 data
->rpc_status
= -ELOOP
;
2045 data
->rpc_status
= -EISDIR
;
2048 data
->rpc_status
= -ENOTDIR
;
2051 renew_lease(data
->o_res
.server
, data
->timestamp
);
2052 if (!(data
->o_res
.rflags
& NFS4_OPEN_RESULT_CONFIRM
))
2053 nfs_confirm_seqid(&data
->owner
->so_seqid
, 0);
2058 static void nfs4_open_release(void *calldata
)
2060 struct nfs4_opendata
*data
= calldata
;
2061 struct nfs4_state
*state
= NULL
;
2063 /* If this request hasn't been cancelled, do nothing */
2064 if (data
->cancelled
== 0)
2066 /* In case of error, no cleanup! */
2067 if (data
->rpc_status
!= 0 || !data
->rpc_done
)
2069 /* In case we need an open_confirm, no cleanup! */
2070 if (data
->o_res
.rflags
& NFS4_OPEN_RESULT_CONFIRM
)
2072 state
= nfs4_opendata_to_nfs4_state(data
);
2074 nfs4_close_state(state
, data
->o_arg
.fmode
);
2076 nfs4_opendata_put(data
);
2079 static const struct rpc_call_ops nfs4_open_ops
= {
2080 .rpc_call_prepare
= nfs4_open_prepare
,
2081 .rpc_call_done
= nfs4_open_done
,
2082 .rpc_release
= nfs4_open_release
,
2085 static int nfs4_run_open_task(struct nfs4_opendata
*data
, int isrecover
)
2087 struct inode
*dir
= d_inode(data
->dir
);
2088 struct nfs_server
*server
= NFS_SERVER(dir
);
2089 struct nfs_openargs
*o_arg
= &data
->o_arg
;
2090 struct nfs_openres
*o_res
= &data
->o_res
;
2091 struct rpc_task
*task
;
2092 struct rpc_message msg
= {
2093 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN
],
2096 .rpc_cred
= data
->owner
->so_cred
,
2098 struct rpc_task_setup task_setup_data
= {
2099 .rpc_client
= server
->client
,
2100 .rpc_message
= &msg
,
2101 .callback_ops
= &nfs4_open_ops
,
2102 .callback_data
= data
,
2103 .workqueue
= nfsiod_workqueue
,
2104 .flags
= RPC_TASK_ASYNC
,
2108 nfs4_init_sequence(&o_arg
->seq_args
, &o_res
->seq_res
, 1);
2109 kref_get(&data
->kref
);
2111 data
->rpc_status
= 0;
2112 data
->cancelled
= 0;
2113 data
->is_recover
= 0;
2115 nfs4_set_sequence_privileged(&o_arg
->seq_args
);
2116 data
->is_recover
= 1;
2118 task
= rpc_run_task(&task_setup_data
);
2120 return PTR_ERR(task
);
2121 status
= nfs4_wait_for_completion_rpc_task(task
);
2123 data
->cancelled
= 1;
2126 status
= data
->rpc_status
;
2132 static int _nfs4_recover_proc_open(struct nfs4_opendata
*data
)
2134 struct inode
*dir
= d_inode(data
->dir
);
2135 struct nfs_openres
*o_res
= &data
->o_res
;
2138 status
= nfs4_run_open_task(data
, 1);
2139 if (status
!= 0 || !data
->rpc_done
)
2142 nfs_fattr_map_and_free_names(NFS_SERVER(dir
), &data
->f_attr
);
2144 if (o_res
->rflags
& NFS4_OPEN_RESULT_CONFIRM
) {
2145 status
= _nfs4_proc_open_confirm(data
);
2154 * Additional permission checks in order to distinguish between an
2155 * open for read, and an open for execute. This works around the
2156 * fact that NFSv4 OPEN treats read and execute permissions as being
2158 * Note that in the non-execute case, we want to turn off permission
2159 * checking if we just created a new file (POSIX open() semantics).
2161 static int nfs4_opendata_access(struct rpc_cred
*cred
,
2162 struct nfs4_opendata
*opendata
,
2163 struct nfs4_state
*state
, fmode_t fmode
,
2166 struct nfs_access_entry cache
;
2169 /* access call failed or for some reason the server doesn't
2170 * support any access modes -- defer access call until later */
2171 if (opendata
->o_res
.access_supported
== 0)
2176 * Use openflags to check for exec, because fmode won't
2177 * always have FMODE_EXEC set when file open for exec.
2179 if (openflags
& __FMODE_EXEC
) {
2180 /* ONLY check for exec rights */
2182 } else if ((fmode
& FMODE_READ
) && !opendata
->file_created
)
2186 cache
.jiffies
= jiffies
;
2187 nfs_access_set_mask(&cache
, opendata
->o_res
.access_result
);
2188 nfs_access_add_cache(state
->inode
, &cache
);
2190 if ((mask
& ~cache
.mask
& (MAY_READ
| MAY_EXEC
)) == 0)
2193 /* even though OPEN succeeded, access is denied. Close the file */
2194 nfs4_close_state(state
, fmode
);
2199 * Note: On error, nfs4_proc_open will free the struct nfs4_opendata
2201 static int _nfs4_proc_open(struct nfs4_opendata
*data
)
2203 struct inode
*dir
= d_inode(data
->dir
);
2204 struct nfs_server
*server
= NFS_SERVER(dir
);
2205 struct nfs_openargs
*o_arg
= &data
->o_arg
;
2206 struct nfs_openres
*o_res
= &data
->o_res
;
2209 status
= nfs4_run_open_task(data
, 0);
2210 if (!data
->rpc_done
)
2213 if (status
== -NFS4ERR_BADNAME
&&
2214 !(o_arg
->open_flags
& O_CREAT
))
2219 nfs_fattr_map_and_free_names(server
, &data
->f_attr
);
2221 if (o_arg
->open_flags
& O_CREAT
) {
2222 update_changeattr(dir
, &o_res
->cinfo
);
2223 if (o_arg
->open_flags
& O_EXCL
)
2224 data
->file_created
= 1;
2225 else if (o_res
->cinfo
.before
!= o_res
->cinfo
.after
)
2226 data
->file_created
= 1;
2228 if ((o_res
->rflags
& NFS4_OPEN_RESULT_LOCKTYPE_POSIX
) == 0)
2229 server
->caps
&= ~NFS_CAP_POSIX_LOCK
;
2230 if(o_res
->rflags
& NFS4_OPEN_RESULT_CONFIRM
) {
2231 status
= _nfs4_proc_open_confirm(data
);
2235 if (!(o_res
->f_attr
->valid
& NFS_ATTR_FATTR
))
2236 nfs4_proc_getattr(server
, &o_res
->fh
, o_res
->f_attr
, o_res
->f_label
);
2240 static int nfs4_recover_expired_lease(struct nfs_server
*server
)
2242 return nfs4_client_recover_expired_lease(server
->nfs_client
);
2247 * reclaim state on the server after a network partition.
2248 * Assumes caller holds the appropriate lock
2250 static int _nfs4_open_expired(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
2252 struct nfs4_opendata
*opendata
;
2255 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
,
2256 NFS4_OPEN_CLAIM_FH
);
2257 if (IS_ERR(opendata
))
2258 return PTR_ERR(opendata
);
2259 ret
= nfs4_open_recover(opendata
, state
);
2261 d_drop(ctx
->dentry
);
2262 nfs4_opendata_put(opendata
);
2266 static int nfs4_do_open_expired(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
2268 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
2269 struct nfs4_exception exception
= { };
2273 err
= _nfs4_open_expired(ctx
, state
);
2274 trace_nfs4_open_expired(ctx
, 0, err
);
2275 if (nfs4_clear_cap_atomic_open_v1(server
, err
, &exception
))
2280 case -NFS4ERR_GRACE
:
2281 case -NFS4ERR_DELAY
:
2282 nfs4_handle_exception(server
, err
, &exception
);
2285 } while (exception
.retry
);
2290 static int nfs4_open_expired(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
2292 struct nfs_open_context
*ctx
;
2295 ctx
= nfs4_state_find_open_context(state
);
2298 ret
= nfs4_do_open_expired(ctx
, state
);
2299 put_nfs_open_context(ctx
);
2303 static void nfs_finish_clear_delegation_stateid(struct nfs4_state
*state
)
2305 nfs_remove_bad_delegation(state
->inode
);
2306 write_seqlock(&state
->seqlock
);
2307 nfs4_stateid_copy(&state
->stateid
, &state
->open_stateid
);
2308 write_sequnlock(&state
->seqlock
);
2309 clear_bit(NFS_DELEGATED_STATE
, &state
->flags
);
2312 static void nfs40_clear_delegation_stateid(struct nfs4_state
*state
)
2314 if (rcu_access_pointer(NFS_I(state
->inode
)->delegation
) != NULL
)
2315 nfs_finish_clear_delegation_stateid(state
);
2318 static int nfs40_open_expired(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
2320 /* NFSv4.0 doesn't allow for delegation recovery on open expire */
2321 nfs40_clear_delegation_stateid(state
);
2322 return nfs4_open_expired(sp
, state
);
2325 #if defined(CONFIG_NFS_V4_1)
2326 static void nfs41_check_delegation_stateid(struct nfs4_state
*state
)
2328 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
2329 nfs4_stateid stateid
;
2330 struct nfs_delegation
*delegation
;
2331 struct rpc_cred
*cred
;
2334 /* Get the delegation credential for use by test/free_stateid */
2336 delegation
= rcu_dereference(NFS_I(state
->inode
)->delegation
);
2337 if (delegation
== NULL
) {
2342 nfs4_stateid_copy(&stateid
, &delegation
->stateid
);
2343 cred
= get_rpccred(delegation
->cred
);
2345 status
= nfs41_test_stateid(server
, &stateid
, cred
);
2346 trace_nfs4_test_delegation_stateid(state
, NULL
, status
);
2348 if (status
!= NFS_OK
) {
2349 /* Free the stateid unless the server explicitly
2350 * informs us the stateid is unrecognized. */
2351 if (status
!= -NFS4ERR_BAD_STATEID
)
2352 nfs41_free_stateid(server
, &stateid
, cred
);
2353 nfs_finish_clear_delegation_stateid(state
);
2360 * nfs41_check_open_stateid - possibly free an open stateid
2362 * @state: NFSv4 state for an inode
2364 * Returns NFS_OK if recovery for this stateid is now finished.
2365 * Otherwise a negative NFS4ERR value is returned.
2367 static int nfs41_check_open_stateid(struct nfs4_state
*state
)
2369 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
2370 nfs4_stateid
*stateid
= &state
->open_stateid
;
2371 struct rpc_cred
*cred
= state
->owner
->so_cred
;
2374 /* If a state reset has been done, test_stateid is unneeded */
2375 if ((test_bit(NFS_O_RDONLY_STATE
, &state
->flags
) == 0) &&
2376 (test_bit(NFS_O_WRONLY_STATE
, &state
->flags
) == 0) &&
2377 (test_bit(NFS_O_RDWR_STATE
, &state
->flags
) == 0))
2378 return -NFS4ERR_BAD_STATEID
;
2380 status
= nfs41_test_stateid(server
, stateid
, cred
);
2381 trace_nfs4_test_open_stateid(state
, NULL
, status
);
2382 if (status
!= NFS_OK
) {
2383 /* Free the stateid unless the server explicitly
2384 * informs us the stateid is unrecognized. */
2385 if (status
!= -NFS4ERR_BAD_STATEID
)
2386 nfs41_free_stateid(server
, stateid
, cred
);
2388 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
2389 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
2390 clear_bit(NFS_O_RDWR_STATE
, &state
->flags
);
2391 clear_bit(NFS_OPEN_STATE
, &state
->flags
);
2396 static int nfs41_open_expired(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
2400 nfs41_check_delegation_stateid(state
);
2401 status
= nfs41_check_open_stateid(state
);
2402 if (status
!= NFS_OK
)
2403 status
= nfs4_open_expired(sp
, state
);
2409 * on an EXCLUSIVE create, the server should send back a bitmask with FATTR4-*
2410 * fields corresponding to attributes that were used to store the verifier.
2411 * Make sure we clobber those fields in the later setattr call
2413 static inline void nfs4_exclusive_attrset(struct nfs4_opendata
*opendata
,
2414 struct iattr
*sattr
, struct nfs4_label
**label
)
2416 const u32
*attrset
= opendata
->o_res
.attrset
;
2418 if ((attrset
[1] & FATTR4_WORD1_TIME_ACCESS
) &&
2419 !(sattr
->ia_valid
& ATTR_ATIME_SET
))
2420 sattr
->ia_valid
|= ATTR_ATIME
;
2422 if ((attrset
[1] & FATTR4_WORD1_TIME_MODIFY
) &&
2423 !(sattr
->ia_valid
& ATTR_MTIME_SET
))
2424 sattr
->ia_valid
|= ATTR_MTIME
;
2426 /* Except MODE, it seems harmless of setting twice. */
2427 if ((attrset
[1] & FATTR4_WORD1_MODE
))
2428 sattr
->ia_valid
&= ~ATTR_MODE
;
2430 if (attrset
[2] & FATTR4_WORD2_SECURITY_LABEL
)
2434 static int _nfs4_open_and_get_state(struct nfs4_opendata
*opendata
,
2437 struct nfs_open_context
*ctx
)
2439 struct nfs4_state_owner
*sp
= opendata
->owner
;
2440 struct nfs_server
*server
= sp
->so_server
;
2441 struct dentry
*dentry
;
2442 struct nfs4_state
*state
;
2446 seq
= raw_seqcount_begin(&sp
->so_reclaim_seqcount
);
2448 ret
= _nfs4_proc_open(opendata
);
2452 state
= nfs4_opendata_to_nfs4_state(opendata
);
2453 ret
= PTR_ERR(state
);
2456 if (server
->caps
& NFS_CAP_POSIX_LOCK
)
2457 set_bit(NFS_STATE_POSIX_LOCKS
, &state
->flags
);
2459 dentry
= opendata
->dentry
;
2460 if (d_really_is_negative(dentry
)) {
2461 /* FIXME: Is this d_drop() ever needed? */
2463 dentry
= d_add_unique(dentry
, igrab(state
->inode
));
2464 if (dentry
== NULL
) {
2465 dentry
= opendata
->dentry
;
2466 } else if (dentry
!= ctx
->dentry
) {
2468 ctx
->dentry
= dget(dentry
);
2470 nfs_set_verifier(dentry
,
2471 nfs_save_change_attribute(d_inode(opendata
->dir
)));
2474 ret
= nfs4_opendata_access(sp
->so_cred
, opendata
, state
, fmode
, flags
);
2479 if (d_inode(dentry
) == state
->inode
) {
2480 nfs_inode_attach_open_context(ctx
);
2481 if (read_seqcount_retry(&sp
->so_reclaim_seqcount
, seq
))
2482 nfs4_schedule_stateid_recovery(server
, state
);
2489 * Returns a referenced nfs4_state
2491 static int _nfs4_do_open(struct inode
*dir
,
2492 struct nfs_open_context
*ctx
,
2494 struct iattr
*sattr
,
2495 struct nfs4_label
*label
,
2498 struct nfs4_state_owner
*sp
;
2499 struct nfs4_state
*state
= NULL
;
2500 struct nfs_server
*server
= NFS_SERVER(dir
);
2501 struct nfs4_opendata
*opendata
;
2502 struct dentry
*dentry
= ctx
->dentry
;
2503 struct rpc_cred
*cred
= ctx
->cred
;
2504 struct nfs4_threshold
**ctx_th
= &ctx
->mdsthreshold
;
2505 fmode_t fmode
= ctx
->mode
& (FMODE_READ
|FMODE_WRITE
|FMODE_EXEC
);
2506 enum open_claim_type4 claim
= NFS4_OPEN_CLAIM_NULL
;
2507 struct nfs4_label
*olabel
= NULL
;
2510 /* Protect against reboot recovery conflicts */
2512 sp
= nfs4_get_state_owner(server
, cred
, GFP_KERNEL
);
2514 dprintk("nfs4_do_open: nfs4_get_state_owner failed!\n");
2517 status
= nfs4_recover_expired_lease(server
);
2519 goto err_put_state_owner
;
2520 if (d_really_is_positive(dentry
))
2521 nfs4_return_incompatible_delegation(d_inode(dentry
), fmode
);
2523 if (d_really_is_positive(dentry
))
2524 claim
= NFS4_OPEN_CLAIM_FH
;
2525 opendata
= nfs4_opendata_alloc(dentry
, sp
, fmode
, flags
, sattr
,
2526 label
, claim
, GFP_KERNEL
);
2527 if (opendata
== NULL
)
2528 goto err_put_state_owner
;
2531 olabel
= nfs4_label_alloc(server
, GFP_KERNEL
);
2532 if (IS_ERR(olabel
)) {
2533 status
= PTR_ERR(olabel
);
2534 goto err_opendata_put
;
2538 if (server
->attr_bitmask
[2] & FATTR4_WORD2_MDSTHRESHOLD
) {
2539 if (!opendata
->f_attr
.mdsthreshold
) {
2540 opendata
->f_attr
.mdsthreshold
= pnfs_mdsthreshold_alloc();
2541 if (!opendata
->f_attr
.mdsthreshold
)
2542 goto err_free_label
;
2544 opendata
->o_arg
.open_bitmap
= &nfs4_pnfs_open_bitmap
[0];
2546 if (d_really_is_positive(dentry
))
2547 opendata
->state
= nfs4_get_open_state(d_inode(dentry
), sp
);
2549 status
= _nfs4_open_and_get_state(opendata
, fmode
, flags
, ctx
);
2551 goto err_free_label
;
2554 if ((opendata
->o_arg
.open_flags
& (O_CREAT
|O_EXCL
)) == (O_CREAT
|O_EXCL
) &&
2555 (opendata
->o_arg
.createmode
!= NFS4_CREATE_GUARDED
)) {
2556 nfs4_exclusive_attrset(opendata
, sattr
, &label
);
2558 nfs_fattr_init(opendata
->o_res
.f_attr
);
2559 status
= nfs4_do_setattr(state
->inode
, cred
,
2560 opendata
->o_res
.f_attr
, sattr
,
2561 state
, label
, olabel
);
2563 nfs_setattr_update_inode(state
->inode
, sattr
,
2564 opendata
->o_res
.f_attr
);
2565 nfs_setsecurity(state
->inode
, opendata
->o_res
.f_attr
, olabel
);
2568 if (opened
&& opendata
->file_created
)
2569 *opened
|= FILE_CREATED
;
2571 if (pnfs_use_threshold(ctx_th
, opendata
->f_attr
.mdsthreshold
, server
)) {
2572 *ctx_th
= opendata
->f_attr
.mdsthreshold
;
2573 opendata
->f_attr
.mdsthreshold
= NULL
;
2576 nfs4_label_free(olabel
);
2578 nfs4_opendata_put(opendata
);
2579 nfs4_put_state_owner(sp
);
2582 nfs4_label_free(olabel
);
2584 nfs4_opendata_put(opendata
);
2585 err_put_state_owner
:
2586 nfs4_put_state_owner(sp
);
2592 static struct nfs4_state
*nfs4_do_open(struct inode
*dir
,
2593 struct nfs_open_context
*ctx
,
2595 struct iattr
*sattr
,
2596 struct nfs4_label
*label
,
2599 struct nfs_server
*server
= NFS_SERVER(dir
);
2600 struct nfs4_exception exception
= { };
2601 struct nfs4_state
*res
;
2605 status
= _nfs4_do_open(dir
, ctx
, flags
, sattr
, label
, opened
);
2607 trace_nfs4_open_file(ctx
, flags
, status
);
2610 /* NOTE: BAD_SEQID means the server and client disagree about the
2611 * book-keeping w.r.t. state-changing operations
2612 * (OPEN/CLOSE/LOCK/LOCKU...)
2613 * It is actually a sign of a bug on the client or on the server.
2615 * If we receive a BAD_SEQID error in the particular case of
2616 * doing an OPEN, we assume that nfs_increment_open_seqid() will
2617 * have unhashed the old state_owner for us, and that we can
2618 * therefore safely retry using a new one. We should still warn
2619 * the user though...
2621 if (status
== -NFS4ERR_BAD_SEQID
) {
2622 pr_warn_ratelimited("NFS: v4 server %s "
2623 " returned a bad sequence-id error!\n",
2624 NFS_SERVER(dir
)->nfs_client
->cl_hostname
);
2625 exception
.retry
= 1;
2629 * BAD_STATEID on OPEN means that the server cancelled our
2630 * state before it received the OPEN_CONFIRM.
2631 * Recover by retrying the request as per the discussion
2632 * on Page 181 of RFC3530.
2634 if (status
== -NFS4ERR_BAD_STATEID
) {
2635 exception
.retry
= 1;
2638 if (status
== -EAGAIN
) {
2639 /* We must have found a delegation */
2640 exception
.retry
= 1;
2643 if (nfs4_clear_cap_atomic_open_v1(server
, status
, &exception
))
2645 res
= ERR_PTR(nfs4_handle_exception(server
,
2646 status
, &exception
));
2647 } while (exception
.retry
);
2651 static int _nfs4_do_setattr(struct inode
*inode
, struct rpc_cred
*cred
,
2652 struct nfs_fattr
*fattr
, struct iattr
*sattr
,
2653 struct nfs4_state
*state
, struct nfs4_label
*ilabel
,
2654 struct nfs4_label
*olabel
)
2656 struct nfs_server
*server
= NFS_SERVER(inode
);
2657 struct nfs_setattrargs arg
= {
2658 .fh
= NFS_FH(inode
),
2661 .bitmask
= server
->attr_bitmask
,
2664 struct nfs_setattrres res
= {
2669 struct rpc_message msg
= {
2670 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETATTR
],
2675 unsigned long timestamp
= jiffies
;
2680 arg
.bitmask
= nfs4_bitmask(server
, ilabel
);
2682 arg
.bitmask
= nfs4_bitmask(server
, olabel
);
2684 nfs_fattr_init(fattr
);
2686 /* Servers should only apply open mode checks for file size changes */
2687 truncate
= (sattr
->ia_valid
& ATTR_SIZE
) ? true : false;
2688 fmode
= truncate
? FMODE_WRITE
: FMODE_READ
;
2690 if (nfs4_copy_delegation_stateid(&arg
.stateid
, inode
, fmode
)) {
2691 /* Use that stateid */
2692 } else if (truncate
&& state
!= NULL
) {
2693 struct nfs_lockowner lockowner
= {
2694 .l_owner
= current
->files
,
2695 .l_pid
= current
->tgid
,
2697 if (!nfs4_valid_open_stateid(state
))
2699 if (nfs4_select_rw_stateid(&arg
.stateid
, state
, FMODE_WRITE
,
2700 &lockowner
) == -EIO
)
2703 nfs4_stateid_copy(&arg
.stateid
, &zero_stateid
);
2705 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
2706 if (status
== 0 && state
!= NULL
)
2707 renew_lease(server
, timestamp
);
2708 trace_nfs4_setattr(inode
, &arg
.stateid
, status
);
2712 static int nfs4_do_setattr(struct inode
*inode
, struct rpc_cred
*cred
,
2713 struct nfs_fattr
*fattr
, struct iattr
*sattr
,
2714 struct nfs4_state
*state
, struct nfs4_label
*ilabel
,
2715 struct nfs4_label
*olabel
)
2717 struct nfs_server
*server
= NFS_SERVER(inode
);
2718 struct nfs4_exception exception
= {
2724 err
= _nfs4_do_setattr(inode
, cred
, fattr
, sattr
, state
, ilabel
, olabel
);
2726 case -NFS4ERR_OPENMODE
:
2727 if (!(sattr
->ia_valid
& ATTR_SIZE
)) {
2728 pr_warn_once("NFSv4: server %s is incorrectly "
2729 "applying open mode checks to "
2730 "a SETATTR that is not "
2731 "changing file size.\n",
2732 server
->nfs_client
->cl_hostname
);
2734 if (state
&& !(state
->state
& FMODE_WRITE
)) {
2736 if (sattr
->ia_valid
& ATTR_OPEN
)
2741 err
= nfs4_handle_exception(server
, err
, &exception
);
2742 } while (exception
.retry
);
2748 nfs4_wait_on_layoutreturn(struct inode
*inode
, struct rpc_task
*task
)
2750 if (inode
== NULL
|| !nfs_have_layout(inode
))
2753 return pnfs_wait_on_layoutreturn(inode
, task
);
2756 struct nfs4_closedata
{
2757 struct inode
*inode
;
2758 struct nfs4_state
*state
;
2759 struct nfs_closeargs arg
;
2760 struct nfs_closeres res
;
2761 struct nfs_fattr fattr
;
2762 unsigned long timestamp
;
2767 static void nfs4_free_closedata(void *data
)
2769 struct nfs4_closedata
*calldata
= data
;
2770 struct nfs4_state_owner
*sp
= calldata
->state
->owner
;
2771 struct super_block
*sb
= calldata
->state
->inode
->i_sb
;
2774 pnfs_roc_release(calldata
->state
->inode
);
2775 nfs4_put_open_state(calldata
->state
);
2776 nfs_free_seqid(calldata
->arg
.seqid
);
2777 nfs4_put_state_owner(sp
);
2778 nfs_sb_deactive(sb
);
2782 static void nfs4_close_done(struct rpc_task
*task
, void *data
)
2784 struct nfs4_closedata
*calldata
= data
;
2785 struct nfs4_state
*state
= calldata
->state
;
2786 struct nfs_server
*server
= NFS_SERVER(calldata
->inode
);
2787 nfs4_stateid
*res_stateid
= NULL
;
2789 dprintk("%s: begin!\n", __func__
);
2790 if (!nfs4_sequence_done(task
, &calldata
->res
.seq_res
))
2792 trace_nfs4_close(state
, &calldata
->arg
, &calldata
->res
, task
->tk_status
);
2793 /* hmm. we are done with the inode, and in the process of freeing
2794 * the state_owner. we keep this around to process errors
2796 switch (task
->tk_status
) {
2798 res_stateid
= &calldata
->res
.stateid
;
2800 pnfs_roc_set_barrier(state
->inode
,
2801 calldata
->roc_barrier
);
2802 renew_lease(server
, calldata
->timestamp
);
2804 case -NFS4ERR_ADMIN_REVOKED
:
2805 case -NFS4ERR_STALE_STATEID
:
2806 case -NFS4ERR_OLD_STATEID
:
2807 case -NFS4ERR_BAD_STATEID
:
2808 case -NFS4ERR_EXPIRED
:
2809 if (!nfs4_stateid_match(&calldata
->arg
.stateid
,
2810 &state
->open_stateid
)) {
2811 rpc_restart_call_prepare(task
);
2814 if (calldata
->arg
.fmode
== 0)
2817 if (nfs4_async_handle_error(task
, server
, state
, NULL
) == -EAGAIN
) {
2818 rpc_restart_call_prepare(task
);
2822 nfs_clear_open_stateid(state
, &calldata
->arg
.stateid
,
2823 res_stateid
, calldata
->arg
.fmode
);
2825 nfs_release_seqid(calldata
->arg
.seqid
);
2826 nfs_refresh_inode(calldata
->inode
, calldata
->res
.fattr
);
2827 dprintk("%s: done, ret = %d!\n", __func__
, task
->tk_status
);
2830 static void nfs4_close_prepare(struct rpc_task
*task
, void *data
)
2832 struct nfs4_closedata
*calldata
= data
;
2833 struct nfs4_state
*state
= calldata
->state
;
2834 struct inode
*inode
= calldata
->inode
;
2835 bool is_rdonly
, is_wronly
, is_rdwr
;
2838 dprintk("%s: begin!\n", __func__
);
2839 if (nfs_wait_on_sequence(calldata
->arg
.seqid
, task
) != 0)
2842 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_DOWNGRADE
];
2843 spin_lock(&state
->owner
->so_lock
);
2844 is_rdwr
= test_bit(NFS_O_RDWR_STATE
, &state
->flags
);
2845 is_rdonly
= test_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
2846 is_wronly
= test_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
2847 nfs4_stateid_copy(&calldata
->arg
.stateid
, &state
->open_stateid
);
2848 /* Calculate the change in open mode */
2849 calldata
->arg
.fmode
= 0;
2850 if (state
->n_rdwr
== 0) {
2851 if (state
->n_rdonly
== 0)
2852 call_close
|= is_rdonly
;
2854 calldata
->arg
.fmode
|= FMODE_READ
;
2855 if (state
->n_wronly
== 0)
2856 call_close
|= is_wronly
;
2858 calldata
->arg
.fmode
|= FMODE_WRITE
;
2860 calldata
->arg
.fmode
|= FMODE_READ
|FMODE_WRITE
;
2862 if (calldata
->arg
.fmode
== 0)
2863 call_close
|= is_rdwr
;
2865 if (!nfs4_valid_open_stateid(state
))
2867 spin_unlock(&state
->owner
->so_lock
);
2870 /* Note: exit _without_ calling nfs4_close_done */
2874 if (nfs4_wait_on_layoutreturn(inode
, task
)) {
2875 nfs_release_seqid(calldata
->arg
.seqid
);
2879 if (calldata
->arg
.fmode
== 0)
2880 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CLOSE
];
2882 pnfs_roc_get_barrier(inode
, &calldata
->roc_barrier
);
2884 calldata
->arg
.share_access
=
2885 nfs4_map_atomic_open_share(NFS_SERVER(inode
),
2886 calldata
->arg
.fmode
, 0);
2888 nfs_fattr_init(calldata
->res
.fattr
);
2889 calldata
->timestamp
= jiffies
;
2890 if (nfs4_setup_sequence(NFS_SERVER(inode
),
2891 &calldata
->arg
.seq_args
,
2892 &calldata
->res
.seq_res
,
2894 nfs_release_seqid(calldata
->arg
.seqid
);
2895 dprintk("%s: done!\n", __func__
);
2898 task
->tk_action
= NULL
;
2900 nfs4_sequence_done(task
, &calldata
->res
.seq_res
);
2903 static const struct rpc_call_ops nfs4_close_ops
= {
2904 .rpc_call_prepare
= nfs4_close_prepare
,
2905 .rpc_call_done
= nfs4_close_done
,
2906 .rpc_release
= nfs4_free_closedata
,
2909 static bool nfs4_roc(struct inode
*inode
)
2911 if (!nfs_have_layout(inode
))
2913 return pnfs_roc(inode
);
2917 * It is possible for data to be read/written from a mem-mapped file
2918 * after the sys_close call (which hits the vfs layer as a flush).
2919 * This means that we can't safely call nfsv4 close on a file until
2920 * the inode is cleared. This in turn means that we are not good
2921 * NFSv4 citizens - we do not indicate to the server to update the file's
2922 * share state even when we are done with one of the three share
2923 * stateid's in the inode.
2925 * NOTE: Caller must be holding the sp->so_owner semaphore!
2927 int nfs4_do_close(struct nfs4_state
*state
, gfp_t gfp_mask
, int wait
)
2929 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
2930 struct nfs_seqid
*(*alloc_seqid
)(struct nfs_seqid_counter
*, gfp_t
);
2931 struct nfs4_closedata
*calldata
;
2932 struct nfs4_state_owner
*sp
= state
->owner
;
2933 struct rpc_task
*task
;
2934 struct rpc_message msg
= {
2935 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CLOSE
],
2936 .rpc_cred
= state
->owner
->so_cred
,
2938 struct rpc_task_setup task_setup_data
= {
2939 .rpc_client
= server
->client
,
2940 .rpc_message
= &msg
,
2941 .callback_ops
= &nfs4_close_ops
,
2942 .workqueue
= nfsiod_workqueue
,
2943 .flags
= RPC_TASK_ASYNC
,
2945 int status
= -ENOMEM
;
2947 nfs4_state_protect(server
->nfs_client
, NFS_SP4_MACH_CRED_CLEANUP
,
2948 &task_setup_data
.rpc_client
, &msg
);
2950 calldata
= kzalloc(sizeof(*calldata
), gfp_mask
);
2951 if (calldata
== NULL
)
2953 nfs4_init_sequence(&calldata
->arg
.seq_args
, &calldata
->res
.seq_res
, 1);
2954 calldata
->inode
= state
->inode
;
2955 calldata
->state
= state
;
2956 calldata
->arg
.fh
= NFS_FH(state
->inode
);
2957 /* Serialization for the sequence id */
2958 alloc_seqid
= server
->nfs_client
->cl_mvops
->alloc_seqid
;
2959 calldata
->arg
.seqid
= alloc_seqid(&state
->owner
->so_seqid
, gfp_mask
);
2960 if (IS_ERR(calldata
->arg
.seqid
))
2961 goto out_free_calldata
;
2962 calldata
->arg
.fmode
= 0;
2963 calldata
->arg
.bitmask
= server
->cache_consistency_bitmask
;
2964 calldata
->res
.fattr
= &calldata
->fattr
;
2965 calldata
->res
.seqid
= calldata
->arg
.seqid
;
2966 calldata
->res
.server
= server
;
2967 calldata
->roc
= nfs4_roc(state
->inode
);
2968 nfs_sb_active(calldata
->inode
->i_sb
);
2970 msg
.rpc_argp
= &calldata
->arg
;
2971 msg
.rpc_resp
= &calldata
->res
;
2972 task_setup_data
.callback_data
= calldata
;
2973 task
= rpc_run_task(&task_setup_data
);
2975 return PTR_ERR(task
);
2978 status
= rpc_wait_for_completion_task(task
);
2984 nfs4_put_open_state(state
);
2985 nfs4_put_state_owner(sp
);
2989 static struct inode
*
2990 nfs4_atomic_open(struct inode
*dir
, struct nfs_open_context
*ctx
,
2991 int open_flags
, struct iattr
*attr
, int *opened
)
2993 struct nfs4_state
*state
;
2994 struct nfs4_label l
= {0, 0, 0, NULL
}, *label
= NULL
;
2996 label
= nfs4_label_init_security(dir
, ctx
->dentry
, attr
, &l
);
2998 /* Protect against concurrent sillydeletes */
2999 state
= nfs4_do_open(dir
, ctx
, open_flags
, attr
, label
, opened
);
3001 nfs4_label_release_security(label
);
3004 return ERR_CAST(state
);
3005 return state
->inode
;
3008 static void nfs4_close_context(struct nfs_open_context
*ctx
, int is_sync
)
3010 if (ctx
->state
== NULL
)
3013 nfs4_close_sync(ctx
->state
, ctx
->mode
);
3015 nfs4_close_state(ctx
->state
, ctx
->mode
);
3018 #define FATTR4_WORD1_NFS40_MASK (2*FATTR4_WORD1_MOUNTED_ON_FILEID - 1UL)
3019 #define FATTR4_WORD2_NFS41_MASK (2*FATTR4_WORD2_SUPPATTR_EXCLCREAT - 1UL)
3020 #define FATTR4_WORD2_NFS42_MASK (2*FATTR4_WORD2_SECURITY_LABEL - 1UL)
3022 static int _nfs4_server_capabilities(struct nfs_server
*server
, struct nfs_fh
*fhandle
)
3024 u32 bitmask
[3] = {}, minorversion
= server
->nfs_client
->cl_minorversion
;
3025 struct nfs4_server_caps_arg args
= {
3029 struct nfs4_server_caps_res res
= {};
3030 struct rpc_message msg
= {
3031 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SERVER_CAPS
],
3037 bitmask
[0] = FATTR4_WORD0_SUPPORTED_ATTRS
|
3038 FATTR4_WORD0_FH_EXPIRE_TYPE
|
3039 FATTR4_WORD0_LINK_SUPPORT
|
3040 FATTR4_WORD0_SYMLINK_SUPPORT
|
3041 FATTR4_WORD0_ACLSUPPORT
;
3043 bitmask
[2] = FATTR4_WORD2_SUPPATTR_EXCLCREAT
;
3045 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3047 /* Sanity check the server answers */
3048 switch (minorversion
) {
3050 res
.attr_bitmask
[1] &= FATTR4_WORD1_NFS40_MASK
;
3051 res
.attr_bitmask
[2] = 0;
3054 res
.attr_bitmask
[2] &= FATTR4_WORD2_NFS41_MASK
;
3057 res
.attr_bitmask
[2] &= FATTR4_WORD2_NFS42_MASK
;
3059 memcpy(server
->attr_bitmask
, res
.attr_bitmask
, sizeof(server
->attr_bitmask
));
3060 server
->caps
&= ~(NFS_CAP_ACLS
|NFS_CAP_HARDLINKS
|
3061 NFS_CAP_SYMLINKS
|NFS_CAP_FILEID
|
3062 NFS_CAP_MODE
|NFS_CAP_NLINK
|NFS_CAP_OWNER
|
3063 NFS_CAP_OWNER_GROUP
|NFS_CAP_ATIME
|
3064 NFS_CAP_CTIME
|NFS_CAP_MTIME
|
3065 NFS_CAP_SECURITY_LABEL
);
3066 if (res
.attr_bitmask
[0] & FATTR4_WORD0_ACL
&&
3067 res
.acl_bitmask
& ACL4_SUPPORT_ALLOW_ACL
)
3068 server
->caps
|= NFS_CAP_ACLS
;
3069 if (res
.has_links
!= 0)
3070 server
->caps
|= NFS_CAP_HARDLINKS
;
3071 if (res
.has_symlinks
!= 0)
3072 server
->caps
|= NFS_CAP_SYMLINKS
;
3073 if (res
.attr_bitmask
[0] & FATTR4_WORD0_FILEID
)
3074 server
->caps
|= NFS_CAP_FILEID
;
3075 if (res
.attr_bitmask
[1] & FATTR4_WORD1_MODE
)
3076 server
->caps
|= NFS_CAP_MODE
;
3077 if (res
.attr_bitmask
[1] & FATTR4_WORD1_NUMLINKS
)
3078 server
->caps
|= NFS_CAP_NLINK
;
3079 if (res
.attr_bitmask
[1] & FATTR4_WORD1_OWNER
)
3080 server
->caps
|= NFS_CAP_OWNER
;
3081 if (res
.attr_bitmask
[1] & FATTR4_WORD1_OWNER_GROUP
)
3082 server
->caps
|= NFS_CAP_OWNER_GROUP
;
3083 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_ACCESS
)
3084 server
->caps
|= NFS_CAP_ATIME
;
3085 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_METADATA
)
3086 server
->caps
|= NFS_CAP_CTIME
;
3087 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_MODIFY
)
3088 server
->caps
|= NFS_CAP_MTIME
;
3089 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
3090 if (res
.attr_bitmask
[2] & FATTR4_WORD2_SECURITY_LABEL
)
3091 server
->caps
|= NFS_CAP_SECURITY_LABEL
;
3093 memcpy(server
->attr_bitmask_nl
, res
.attr_bitmask
,
3094 sizeof(server
->attr_bitmask
));
3095 server
->attr_bitmask_nl
[2] &= ~FATTR4_WORD2_SECURITY_LABEL
;
3097 memcpy(server
->cache_consistency_bitmask
, res
.attr_bitmask
, sizeof(server
->cache_consistency_bitmask
));
3098 server
->cache_consistency_bitmask
[0] &= FATTR4_WORD0_CHANGE
|FATTR4_WORD0_SIZE
;
3099 server
->cache_consistency_bitmask
[1] &= FATTR4_WORD1_TIME_METADATA
|FATTR4_WORD1_TIME_MODIFY
;
3100 server
->cache_consistency_bitmask
[2] = 0;
3101 memcpy(server
->exclcreat_bitmask
, res
.exclcreat_bitmask
,
3102 sizeof(server
->exclcreat_bitmask
));
3103 server
->acl_bitmask
= res
.acl_bitmask
;
3104 server
->fh_expire_type
= res
.fh_expire_type
;
3110 int nfs4_server_capabilities(struct nfs_server
*server
, struct nfs_fh
*fhandle
)
3112 struct nfs4_exception exception
= { };
3115 err
= nfs4_handle_exception(server
,
3116 _nfs4_server_capabilities(server
, fhandle
),
3118 } while (exception
.retry
);
3122 static int _nfs4_lookup_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3123 struct nfs_fsinfo
*info
)
3126 struct nfs4_lookup_root_arg args
= {
3129 struct nfs4_lookup_res res
= {
3131 .fattr
= info
->fattr
,
3134 struct rpc_message msg
= {
3135 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOOKUP_ROOT
],
3140 bitmask
[0] = nfs4_fattr_bitmap
[0];
3141 bitmask
[1] = nfs4_fattr_bitmap
[1];
3143 * Process the label in the upcoming getfattr
3145 bitmask
[2] = nfs4_fattr_bitmap
[2] & ~FATTR4_WORD2_SECURITY_LABEL
;
3147 nfs_fattr_init(info
->fattr
);
3148 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3151 static int nfs4_lookup_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3152 struct nfs_fsinfo
*info
)
3154 struct nfs4_exception exception
= { };
3157 err
= _nfs4_lookup_root(server
, fhandle
, info
);
3158 trace_nfs4_lookup_root(server
, fhandle
, info
->fattr
, err
);
3161 case -NFS4ERR_WRONGSEC
:
3164 err
= nfs4_handle_exception(server
, err
, &exception
);
3166 } while (exception
.retry
);
3171 static int nfs4_lookup_root_sec(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3172 struct nfs_fsinfo
*info
, rpc_authflavor_t flavor
)
3174 struct rpc_auth_create_args auth_args
= {
3175 .pseudoflavor
= flavor
,
3177 struct rpc_auth
*auth
;
3180 auth
= rpcauth_create(&auth_args
, server
->client
);
3185 ret
= nfs4_lookup_root(server
, fhandle
, info
);
3191 * Retry pseudoroot lookup with various security flavors. We do this when:
3193 * NFSv4.0: the PUTROOTFH operation returns NFS4ERR_WRONGSEC
3194 * NFSv4.1: the server does not support the SECINFO_NO_NAME operation
3196 * Returns zero on success, or a negative NFS4ERR value, or a
3197 * negative errno value.
3199 static int nfs4_find_root_sec(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3200 struct nfs_fsinfo
*info
)
3202 /* Per 3530bis 15.33.5 */
3203 static const rpc_authflavor_t flav_array
[] = {
3207 RPC_AUTH_UNIX
, /* courtesy */
3210 int status
= -EPERM
;
3213 if (server
->auth_info
.flavor_len
> 0) {
3214 /* try each flavor specified by user */
3215 for (i
= 0; i
< server
->auth_info
.flavor_len
; i
++) {
3216 status
= nfs4_lookup_root_sec(server
, fhandle
, info
,
3217 server
->auth_info
.flavors
[i
]);
3218 if (status
== -NFS4ERR_WRONGSEC
|| status
== -EACCES
)
3223 /* no flavors specified by user, try default list */
3224 for (i
= 0; i
< ARRAY_SIZE(flav_array
); i
++) {
3225 status
= nfs4_lookup_root_sec(server
, fhandle
, info
,
3227 if (status
== -NFS4ERR_WRONGSEC
|| status
== -EACCES
)
3234 * -EACCESS could mean that the user doesn't have correct permissions
3235 * to access the mount. It could also mean that we tried to mount
3236 * with a gss auth flavor, but rpc.gssd isn't running. Either way,
3237 * existing mount programs don't handle -EACCES very well so it should
3238 * be mapped to -EPERM instead.
3240 if (status
== -EACCES
)
3245 static int nfs4_do_find_root_sec(struct nfs_server
*server
,
3246 struct nfs_fh
*fhandle
, struct nfs_fsinfo
*info
)
3248 int mv
= server
->nfs_client
->cl_minorversion
;
3249 return nfs_v4_minor_ops
[mv
]->find_root_sec(server
, fhandle
, info
);
3253 * nfs4_proc_get_rootfh - get file handle for server's pseudoroot
3254 * @server: initialized nfs_server handle
3255 * @fhandle: we fill in the pseudo-fs root file handle
3256 * @info: we fill in an FSINFO struct
3257 * @auth_probe: probe the auth flavours
3259 * Returns zero on success, or a negative errno.
3261 int nfs4_proc_get_rootfh(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3262 struct nfs_fsinfo
*info
,
3268 status
= nfs4_lookup_root(server
, fhandle
, info
);
3270 if (auth_probe
|| status
== NFS4ERR_WRONGSEC
)
3271 status
= nfs4_do_find_root_sec(server
, fhandle
, info
);
3274 status
= nfs4_server_capabilities(server
, fhandle
);
3276 status
= nfs4_do_fsinfo(server
, fhandle
, info
);
3278 return nfs4_map_errors(status
);
3281 static int nfs4_proc_get_root(struct nfs_server
*server
, struct nfs_fh
*mntfh
,
3282 struct nfs_fsinfo
*info
)
3285 struct nfs_fattr
*fattr
= info
->fattr
;
3286 struct nfs4_label
*label
= NULL
;
3288 error
= nfs4_server_capabilities(server
, mntfh
);
3290 dprintk("nfs4_get_root: getcaps error = %d\n", -error
);
3294 label
= nfs4_label_alloc(server
, GFP_KERNEL
);
3296 return PTR_ERR(label
);
3298 error
= nfs4_proc_getattr(server
, mntfh
, fattr
, label
);
3300 dprintk("nfs4_get_root: getattr error = %d\n", -error
);
3301 goto err_free_label
;
3304 if (fattr
->valid
& NFS_ATTR_FATTR_FSID
&&
3305 !nfs_fsid_equal(&server
->fsid
, &fattr
->fsid
))
3306 memcpy(&server
->fsid
, &fattr
->fsid
, sizeof(server
->fsid
));
3309 nfs4_label_free(label
);
3315 * Get locations and (maybe) other attributes of a referral.
3316 * Note that we'll actually follow the referral later when
3317 * we detect fsid mismatch in inode revalidation
3319 static int nfs4_get_referral(struct rpc_clnt
*client
, struct inode
*dir
,
3320 const struct qstr
*name
, struct nfs_fattr
*fattr
,
3321 struct nfs_fh
*fhandle
)
3323 int status
= -ENOMEM
;
3324 struct page
*page
= NULL
;
3325 struct nfs4_fs_locations
*locations
= NULL
;
3327 page
= alloc_page(GFP_KERNEL
);
3330 locations
= kmalloc(sizeof(struct nfs4_fs_locations
), GFP_KERNEL
);
3331 if (locations
== NULL
)
3334 status
= nfs4_proc_fs_locations(client
, dir
, name
, locations
, page
);
3339 * If the fsid didn't change, this is a migration event, not a
3340 * referral. Cause us to drop into the exception handler, which
3341 * will kick off migration recovery.
3343 if (nfs_fsid_equal(&NFS_SERVER(dir
)->fsid
, &locations
->fattr
.fsid
)) {
3344 dprintk("%s: server did not return a different fsid for"
3345 " a referral at %s\n", __func__
, name
->name
);
3346 status
= -NFS4ERR_MOVED
;
3349 /* Fixup attributes for the nfs_lookup() call to nfs_fhget() */
3350 nfs_fixup_referral_attributes(&locations
->fattr
);
3352 /* replace the lookup nfs_fattr with the locations nfs_fattr */
3353 memcpy(fattr
, &locations
->fattr
, sizeof(struct nfs_fattr
));
3354 memset(fhandle
, 0, sizeof(struct nfs_fh
));
3362 static int _nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3363 struct nfs_fattr
*fattr
, struct nfs4_label
*label
)
3365 struct nfs4_getattr_arg args
= {
3367 .bitmask
= server
->attr_bitmask
,
3369 struct nfs4_getattr_res res
= {
3374 struct rpc_message msg
= {
3375 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETATTR
],
3380 args
.bitmask
= nfs4_bitmask(server
, label
);
3382 nfs_fattr_init(fattr
);
3383 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3386 static int nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3387 struct nfs_fattr
*fattr
, struct nfs4_label
*label
)
3389 struct nfs4_exception exception
= { };
3392 err
= _nfs4_proc_getattr(server
, fhandle
, fattr
, label
);
3393 trace_nfs4_getattr(server
, fhandle
, fattr
, err
);
3394 err
= nfs4_handle_exception(server
, err
,
3396 } while (exception
.retry
);
3401 * The file is not closed if it is opened due to the a request to change
3402 * the size of the file. The open call will not be needed once the
3403 * VFS layer lookup-intents are implemented.
3405 * Close is called when the inode is destroyed.
3406 * If we haven't opened the file for O_WRONLY, we
3407 * need to in the size_change case to obtain a stateid.
3410 * Because OPEN is always done by name in nfsv4, it is
3411 * possible that we opened a different file by the same
3412 * name. We can recognize this race condition, but we
3413 * can't do anything about it besides returning an error.
3415 * This will be fixed with VFS changes (lookup-intent).
3418 nfs4_proc_setattr(struct dentry
*dentry
, struct nfs_fattr
*fattr
,
3419 struct iattr
*sattr
)
3421 struct inode
*inode
= d_inode(dentry
);
3422 struct rpc_cred
*cred
= NULL
;
3423 struct nfs4_state
*state
= NULL
;
3424 struct nfs4_label
*label
= NULL
;
3427 if (pnfs_ld_layoutret_on_setattr(inode
) &&
3428 sattr
->ia_valid
& ATTR_SIZE
&&
3429 sattr
->ia_size
< i_size_read(inode
))
3430 pnfs_commit_and_return_layout(inode
);
3432 nfs_fattr_init(fattr
);
3434 /* Deal with open(O_TRUNC) */
3435 if (sattr
->ia_valid
& ATTR_OPEN
)
3436 sattr
->ia_valid
&= ~(ATTR_MTIME
|ATTR_CTIME
);
3438 /* Optimization: if the end result is no change, don't RPC */
3439 if ((sattr
->ia_valid
& ~(ATTR_FILE
|ATTR_OPEN
)) == 0)
3442 /* Search for an existing open(O_WRITE) file */
3443 if (sattr
->ia_valid
& ATTR_FILE
) {
3444 struct nfs_open_context
*ctx
;
3446 ctx
= nfs_file_open_context(sattr
->ia_file
);
3453 label
= nfs4_label_alloc(NFS_SERVER(inode
), GFP_KERNEL
);
3455 return PTR_ERR(label
);
3457 status
= nfs4_do_setattr(inode
, cred
, fattr
, sattr
, state
, NULL
, label
);
3459 nfs_setattr_update_inode(inode
, sattr
, fattr
);
3460 nfs_setsecurity(inode
, fattr
, label
);
3462 nfs4_label_free(label
);
3466 static int _nfs4_proc_lookup(struct rpc_clnt
*clnt
, struct inode
*dir
,
3467 const struct qstr
*name
, struct nfs_fh
*fhandle
,
3468 struct nfs_fattr
*fattr
, struct nfs4_label
*label
)
3470 struct nfs_server
*server
= NFS_SERVER(dir
);
3472 struct nfs4_lookup_arg args
= {
3473 .bitmask
= server
->attr_bitmask
,
3474 .dir_fh
= NFS_FH(dir
),
3477 struct nfs4_lookup_res res
= {
3483 struct rpc_message msg
= {
3484 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOOKUP
],
3489 args
.bitmask
= nfs4_bitmask(server
, label
);
3491 nfs_fattr_init(fattr
);
3493 dprintk("NFS call lookup %s\n", name
->name
);
3494 status
= nfs4_call_sync(clnt
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3495 dprintk("NFS reply lookup: %d\n", status
);
3499 static void nfs_fixup_secinfo_attributes(struct nfs_fattr
*fattr
)
3501 fattr
->valid
|= NFS_ATTR_FATTR_TYPE
| NFS_ATTR_FATTR_MODE
|
3502 NFS_ATTR_FATTR_NLINK
| NFS_ATTR_FATTR_MOUNTPOINT
;
3503 fattr
->mode
= S_IFDIR
| S_IRUGO
| S_IXUGO
;
3507 static int nfs4_proc_lookup_common(struct rpc_clnt
**clnt
, struct inode
*dir
,
3508 struct qstr
*name
, struct nfs_fh
*fhandle
,
3509 struct nfs_fattr
*fattr
, struct nfs4_label
*label
)
3511 struct nfs4_exception exception
= { };
3512 struct rpc_clnt
*client
= *clnt
;
3515 err
= _nfs4_proc_lookup(client
, dir
, name
, fhandle
, fattr
, label
);
3516 trace_nfs4_lookup(dir
, name
, err
);
3518 case -NFS4ERR_BADNAME
:
3521 case -NFS4ERR_MOVED
:
3522 err
= nfs4_get_referral(client
, dir
, name
, fattr
, fhandle
);
3523 if (err
== -NFS4ERR_MOVED
)
3524 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
, &exception
);
3526 case -NFS4ERR_WRONGSEC
:
3528 if (client
!= *clnt
)
3530 client
= nfs4_negotiate_security(client
, dir
, name
);
3532 return PTR_ERR(client
);
3534 exception
.retry
= 1;
3537 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
, &exception
);
3539 } while (exception
.retry
);
3544 else if (client
!= *clnt
)
3545 rpc_shutdown_client(client
);
3550 static int nfs4_proc_lookup(struct inode
*dir
, struct qstr
*name
,
3551 struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
,
3552 struct nfs4_label
*label
)
3555 struct rpc_clnt
*client
= NFS_CLIENT(dir
);
3557 status
= nfs4_proc_lookup_common(&client
, dir
, name
, fhandle
, fattr
, label
);
3558 if (client
!= NFS_CLIENT(dir
)) {
3559 rpc_shutdown_client(client
);
3560 nfs_fixup_secinfo_attributes(fattr
);
3566 nfs4_proc_lookup_mountpoint(struct inode
*dir
, struct qstr
*name
,
3567 struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
3569 struct rpc_clnt
*client
= NFS_CLIENT(dir
);
3572 status
= nfs4_proc_lookup_common(&client
, dir
, name
, fhandle
, fattr
, NULL
);
3574 return ERR_PTR(status
);
3575 return (client
== NFS_CLIENT(dir
)) ? rpc_clone_client(client
) : client
;
3578 static int _nfs4_proc_access(struct inode
*inode
, struct nfs_access_entry
*entry
)
3580 struct nfs_server
*server
= NFS_SERVER(inode
);
3581 struct nfs4_accessargs args
= {
3582 .fh
= NFS_FH(inode
),
3583 .bitmask
= server
->cache_consistency_bitmask
,
3585 struct nfs4_accessres res
= {
3588 struct rpc_message msg
= {
3589 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_ACCESS
],
3592 .rpc_cred
= entry
->cred
,
3594 int mode
= entry
->mask
;
3598 * Determine which access bits we want to ask for...
3600 if (mode
& MAY_READ
)
3601 args
.access
|= NFS4_ACCESS_READ
;
3602 if (S_ISDIR(inode
->i_mode
)) {
3603 if (mode
& MAY_WRITE
)
3604 args
.access
|= NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
| NFS4_ACCESS_DELETE
;
3605 if (mode
& MAY_EXEC
)
3606 args
.access
|= NFS4_ACCESS_LOOKUP
;
3608 if (mode
& MAY_WRITE
)
3609 args
.access
|= NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
;
3610 if (mode
& MAY_EXEC
)
3611 args
.access
|= NFS4_ACCESS_EXECUTE
;
3614 res
.fattr
= nfs_alloc_fattr();
3615 if (res
.fattr
== NULL
)
3618 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3620 nfs_access_set_mask(entry
, res
.access
);
3621 nfs_refresh_inode(inode
, res
.fattr
);
3623 nfs_free_fattr(res
.fattr
);
3627 static int nfs4_proc_access(struct inode
*inode
, struct nfs_access_entry
*entry
)
3629 struct nfs4_exception exception
= { };
3632 err
= _nfs4_proc_access(inode
, entry
);
3633 trace_nfs4_access(inode
, err
);
3634 err
= nfs4_handle_exception(NFS_SERVER(inode
), err
,
3636 } while (exception
.retry
);
3641 * TODO: For the time being, we don't try to get any attributes
3642 * along with any of the zero-copy operations READ, READDIR,
3645 * In the case of the first three, we want to put the GETATTR
3646 * after the read-type operation -- this is because it is hard
3647 * to predict the length of a GETATTR response in v4, and thus
3648 * align the READ data correctly. This means that the GETATTR
3649 * may end up partially falling into the page cache, and we should
3650 * shift it into the 'tail' of the xdr_buf before processing.
3651 * To do this efficiently, we need to know the total length
3652 * of data received, which doesn't seem to be available outside
3655 * In the case of WRITE, we also want to put the GETATTR after
3656 * the operation -- in this case because we want to make sure
3657 * we get the post-operation mtime and size.
3659 * Both of these changes to the XDR layer would in fact be quite
3660 * minor, but I decided to leave them for a subsequent patch.
3662 static int _nfs4_proc_readlink(struct inode
*inode
, struct page
*page
,
3663 unsigned int pgbase
, unsigned int pglen
)
3665 struct nfs4_readlink args
= {
3666 .fh
= NFS_FH(inode
),
3671 struct nfs4_readlink_res res
;
3672 struct rpc_message msg
= {
3673 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READLINK
],
3678 return nfs4_call_sync(NFS_SERVER(inode
)->client
, NFS_SERVER(inode
), &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3681 static int nfs4_proc_readlink(struct inode
*inode
, struct page
*page
,
3682 unsigned int pgbase
, unsigned int pglen
)
3684 struct nfs4_exception exception
= { };
3687 err
= _nfs4_proc_readlink(inode
, page
, pgbase
, pglen
);
3688 trace_nfs4_readlink(inode
, err
);
3689 err
= nfs4_handle_exception(NFS_SERVER(inode
), err
,
3691 } while (exception
.retry
);
3696 * This is just for mknod. open(O_CREAT) will always do ->open_context().
3699 nfs4_proc_create(struct inode
*dir
, struct dentry
*dentry
, struct iattr
*sattr
,
3702 struct nfs4_label l
, *ilabel
= NULL
;
3703 struct nfs_open_context
*ctx
;
3704 struct nfs4_state
*state
;
3707 ctx
= alloc_nfs_open_context(dentry
, FMODE_READ
);
3709 return PTR_ERR(ctx
);
3711 ilabel
= nfs4_label_init_security(dir
, dentry
, sattr
, &l
);
3713 sattr
->ia_mode
&= ~current_umask();
3714 state
= nfs4_do_open(dir
, ctx
, flags
, sattr
, ilabel
, NULL
);
3715 if (IS_ERR(state
)) {
3716 status
= PTR_ERR(state
);
3720 nfs4_label_release_security(ilabel
);
3721 put_nfs_open_context(ctx
);
3725 static int _nfs4_proc_remove(struct inode
*dir
, struct qstr
*name
)
3727 struct nfs_server
*server
= NFS_SERVER(dir
);
3728 struct nfs_removeargs args
= {
3732 struct nfs_removeres res
= {
3735 struct rpc_message msg
= {
3736 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_REMOVE
],
3742 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 1);
3744 update_changeattr(dir
, &res
.cinfo
);
3748 static int nfs4_proc_remove(struct inode
*dir
, struct qstr
*name
)
3750 struct nfs4_exception exception
= { };
3753 err
= _nfs4_proc_remove(dir
, name
);
3754 trace_nfs4_remove(dir
, name
, err
);
3755 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
3757 } while (exception
.retry
);
3761 static void nfs4_proc_unlink_setup(struct rpc_message
*msg
, struct inode
*dir
)
3763 struct nfs_server
*server
= NFS_SERVER(dir
);
3764 struct nfs_removeargs
*args
= msg
->rpc_argp
;
3765 struct nfs_removeres
*res
= msg
->rpc_resp
;
3767 res
->server
= server
;
3768 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_REMOVE
];
3769 nfs4_init_sequence(&args
->seq_args
, &res
->seq_res
, 1);
3771 nfs_fattr_init(res
->dir_attr
);
3774 static void nfs4_proc_unlink_rpc_prepare(struct rpc_task
*task
, struct nfs_unlinkdata
*data
)
3776 nfs4_setup_sequence(NFS_SERVER(data
->dir
),
3777 &data
->args
.seq_args
,
3782 static int nfs4_proc_unlink_done(struct rpc_task
*task
, struct inode
*dir
)
3784 struct nfs_unlinkdata
*data
= task
->tk_calldata
;
3785 struct nfs_removeres
*res
= &data
->res
;
3787 if (!nfs4_sequence_done(task
, &res
->seq_res
))
3789 if (nfs4_async_handle_error(task
, res
->server
, NULL
,
3790 &data
->timeout
) == -EAGAIN
)
3792 update_changeattr(dir
, &res
->cinfo
);
3796 static void nfs4_proc_rename_setup(struct rpc_message
*msg
, struct inode
*dir
)
3798 struct nfs_server
*server
= NFS_SERVER(dir
);
3799 struct nfs_renameargs
*arg
= msg
->rpc_argp
;
3800 struct nfs_renameres
*res
= msg
->rpc_resp
;
3802 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENAME
];
3803 res
->server
= server
;
3804 nfs4_init_sequence(&arg
->seq_args
, &res
->seq_res
, 1);
3807 static void nfs4_proc_rename_rpc_prepare(struct rpc_task
*task
, struct nfs_renamedata
*data
)
3809 nfs4_setup_sequence(NFS_SERVER(data
->old_dir
),
3810 &data
->args
.seq_args
,
3815 static int nfs4_proc_rename_done(struct rpc_task
*task
, struct inode
*old_dir
,
3816 struct inode
*new_dir
)
3818 struct nfs_renamedata
*data
= task
->tk_calldata
;
3819 struct nfs_renameres
*res
= &data
->res
;
3821 if (!nfs4_sequence_done(task
, &res
->seq_res
))
3823 if (nfs4_async_handle_error(task
, res
->server
, NULL
, &data
->timeout
) == -EAGAIN
)
3826 update_changeattr(old_dir
, &res
->old_cinfo
);
3827 update_changeattr(new_dir
, &res
->new_cinfo
);
3831 static int _nfs4_proc_link(struct inode
*inode
, struct inode
*dir
, struct qstr
*name
)
3833 struct nfs_server
*server
= NFS_SERVER(inode
);
3834 struct nfs4_link_arg arg
= {
3835 .fh
= NFS_FH(inode
),
3836 .dir_fh
= NFS_FH(dir
),
3838 .bitmask
= server
->attr_bitmask
,
3840 struct nfs4_link_res res
= {
3844 struct rpc_message msg
= {
3845 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LINK
],
3849 int status
= -ENOMEM
;
3851 res
.fattr
= nfs_alloc_fattr();
3852 if (res
.fattr
== NULL
)
3855 res
.label
= nfs4_label_alloc(server
, GFP_KERNEL
);
3856 if (IS_ERR(res
.label
)) {
3857 status
= PTR_ERR(res
.label
);
3860 arg
.bitmask
= nfs4_bitmask(server
, res
.label
);
3862 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
3864 update_changeattr(dir
, &res
.cinfo
);
3865 status
= nfs_post_op_update_inode(inode
, res
.fattr
);
3867 nfs_setsecurity(inode
, res
.fattr
, res
.label
);
3871 nfs4_label_free(res
.label
);
3874 nfs_free_fattr(res
.fattr
);
3878 static int nfs4_proc_link(struct inode
*inode
, struct inode
*dir
, struct qstr
*name
)
3880 struct nfs4_exception exception
= { };
3883 err
= nfs4_handle_exception(NFS_SERVER(inode
),
3884 _nfs4_proc_link(inode
, dir
, name
),
3886 } while (exception
.retry
);
3890 struct nfs4_createdata
{
3891 struct rpc_message msg
;
3892 struct nfs4_create_arg arg
;
3893 struct nfs4_create_res res
;
3895 struct nfs_fattr fattr
;
3896 struct nfs4_label
*label
;
3899 static struct nfs4_createdata
*nfs4_alloc_createdata(struct inode
*dir
,
3900 struct qstr
*name
, struct iattr
*sattr
, u32 ftype
)
3902 struct nfs4_createdata
*data
;
3904 data
= kzalloc(sizeof(*data
), GFP_KERNEL
);
3906 struct nfs_server
*server
= NFS_SERVER(dir
);
3908 data
->label
= nfs4_label_alloc(server
, GFP_KERNEL
);
3909 if (IS_ERR(data
->label
))
3912 data
->msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CREATE
];
3913 data
->msg
.rpc_argp
= &data
->arg
;
3914 data
->msg
.rpc_resp
= &data
->res
;
3915 data
->arg
.dir_fh
= NFS_FH(dir
);
3916 data
->arg
.server
= server
;
3917 data
->arg
.name
= name
;
3918 data
->arg
.attrs
= sattr
;
3919 data
->arg
.ftype
= ftype
;
3920 data
->arg
.bitmask
= nfs4_bitmask(server
, data
->label
);
3921 data
->res
.server
= server
;
3922 data
->res
.fh
= &data
->fh
;
3923 data
->res
.fattr
= &data
->fattr
;
3924 data
->res
.label
= data
->label
;
3925 nfs_fattr_init(data
->res
.fattr
);
3933 static int nfs4_do_create(struct inode
*dir
, struct dentry
*dentry
, struct nfs4_createdata
*data
)
3935 int status
= nfs4_call_sync(NFS_SERVER(dir
)->client
, NFS_SERVER(dir
), &data
->msg
,
3936 &data
->arg
.seq_args
, &data
->res
.seq_res
, 1);
3938 update_changeattr(dir
, &data
->res
.dir_cinfo
);
3939 status
= nfs_instantiate(dentry
, data
->res
.fh
, data
->res
.fattr
, data
->res
.label
);
3944 static void nfs4_free_createdata(struct nfs4_createdata
*data
)
3946 nfs4_label_free(data
->label
);
3950 static int _nfs4_proc_symlink(struct inode
*dir
, struct dentry
*dentry
,
3951 struct page
*page
, unsigned int len
, struct iattr
*sattr
,
3952 struct nfs4_label
*label
)
3954 struct nfs4_createdata
*data
;
3955 int status
= -ENAMETOOLONG
;
3957 if (len
> NFS4_MAXPATHLEN
)
3961 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4LNK
);
3965 data
->msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SYMLINK
];
3966 data
->arg
.u
.symlink
.pages
= &page
;
3967 data
->arg
.u
.symlink
.len
= len
;
3968 data
->arg
.label
= label
;
3970 status
= nfs4_do_create(dir
, dentry
, data
);
3972 nfs4_free_createdata(data
);
3977 static int nfs4_proc_symlink(struct inode
*dir
, struct dentry
*dentry
,
3978 struct page
*page
, unsigned int len
, struct iattr
*sattr
)
3980 struct nfs4_exception exception
= { };
3981 struct nfs4_label l
, *label
= NULL
;
3984 label
= nfs4_label_init_security(dir
, dentry
, sattr
, &l
);
3987 err
= _nfs4_proc_symlink(dir
, dentry
, page
, len
, sattr
, label
);
3988 trace_nfs4_symlink(dir
, &dentry
->d_name
, err
);
3989 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
3991 } while (exception
.retry
);
3993 nfs4_label_release_security(label
);
3997 static int _nfs4_proc_mkdir(struct inode
*dir
, struct dentry
*dentry
,
3998 struct iattr
*sattr
, struct nfs4_label
*label
)
4000 struct nfs4_createdata
*data
;
4001 int status
= -ENOMEM
;
4003 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4DIR
);
4007 data
->arg
.label
= label
;
4008 status
= nfs4_do_create(dir
, dentry
, data
);
4010 nfs4_free_createdata(data
);
4015 static int nfs4_proc_mkdir(struct inode
*dir
, struct dentry
*dentry
,
4016 struct iattr
*sattr
)
4018 struct nfs4_exception exception
= { };
4019 struct nfs4_label l
, *label
= NULL
;
4022 label
= nfs4_label_init_security(dir
, dentry
, sattr
, &l
);
4024 sattr
->ia_mode
&= ~current_umask();
4026 err
= _nfs4_proc_mkdir(dir
, dentry
, sattr
, label
);
4027 trace_nfs4_mkdir(dir
, &dentry
->d_name
, err
);
4028 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
4030 } while (exception
.retry
);
4031 nfs4_label_release_security(label
);
4036 static int _nfs4_proc_readdir(struct dentry
*dentry
, struct rpc_cred
*cred
,
4037 u64 cookie
, struct page
**pages
, unsigned int count
, int plus
)
4039 struct inode
*dir
= d_inode(dentry
);
4040 struct nfs4_readdir_arg args
= {
4045 .bitmask
= NFS_SERVER(d_inode(dentry
))->attr_bitmask
,
4048 struct nfs4_readdir_res res
;
4049 struct rpc_message msg
= {
4050 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READDIR
],
4057 dprintk("%s: dentry = %pd2, cookie = %Lu\n", __func__
,
4059 (unsigned long long)cookie
);
4060 nfs4_setup_readdir(cookie
, NFS_I(dir
)->cookieverf
, dentry
, &args
);
4061 res
.pgbase
= args
.pgbase
;
4062 status
= nfs4_call_sync(NFS_SERVER(dir
)->client
, NFS_SERVER(dir
), &msg
, &args
.seq_args
, &res
.seq_res
, 0);
4064 memcpy(NFS_I(dir
)->cookieverf
, res
.verifier
.data
, NFS4_VERIFIER_SIZE
);
4065 status
+= args
.pgbase
;
4068 nfs_invalidate_atime(dir
);
4070 dprintk("%s: returns %d\n", __func__
, status
);
4074 static int nfs4_proc_readdir(struct dentry
*dentry
, struct rpc_cred
*cred
,
4075 u64 cookie
, struct page
**pages
, unsigned int count
, int plus
)
4077 struct nfs4_exception exception
= { };
4080 err
= _nfs4_proc_readdir(dentry
, cred
, cookie
,
4081 pages
, count
, plus
);
4082 trace_nfs4_readdir(d_inode(dentry
), err
);
4083 err
= nfs4_handle_exception(NFS_SERVER(d_inode(dentry
)), err
,
4085 } while (exception
.retry
);
4089 static int _nfs4_proc_mknod(struct inode
*dir
, struct dentry
*dentry
,
4090 struct iattr
*sattr
, struct nfs4_label
*label
, dev_t rdev
)
4092 struct nfs4_createdata
*data
;
4093 int mode
= sattr
->ia_mode
;
4094 int status
= -ENOMEM
;
4096 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4SOCK
);
4101 data
->arg
.ftype
= NF4FIFO
;
4102 else if (S_ISBLK(mode
)) {
4103 data
->arg
.ftype
= NF4BLK
;
4104 data
->arg
.u
.device
.specdata1
= MAJOR(rdev
);
4105 data
->arg
.u
.device
.specdata2
= MINOR(rdev
);
4107 else if (S_ISCHR(mode
)) {
4108 data
->arg
.ftype
= NF4CHR
;
4109 data
->arg
.u
.device
.specdata1
= MAJOR(rdev
);
4110 data
->arg
.u
.device
.specdata2
= MINOR(rdev
);
4111 } else if (!S_ISSOCK(mode
)) {
4116 data
->arg
.label
= label
;
4117 status
= nfs4_do_create(dir
, dentry
, data
);
4119 nfs4_free_createdata(data
);
4124 static int nfs4_proc_mknod(struct inode
*dir
, struct dentry
*dentry
,
4125 struct iattr
*sattr
, dev_t rdev
)
4127 struct nfs4_exception exception
= { };
4128 struct nfs4_label l
, *label
= NULL
;
4131 label
= nfs4_label_init_security(dir
, dentry
, sattr
, &l
);
4133 sattr
->ia_mode
&= ~current_umask();
4135 err
= _nfs4_proc_mknod(dir
, dentry
, sattr
, label
, rdev
);
4136 trace_nfs4_mknod(dir
, &dentry
->d_name
, err
);
4137 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
4139 } while (exception
.retry
);
4141 nfs4_label_release_security(label
);
4146 static int _nfs4_proc_statfs(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
4147 struct nfs_fsstat
*fsstat
)
4149 struct nfs4_statfs_arg args
= {
4151 .bitmask
= server
->attr_bitmask
,
4153 struct nfs4_statfs_res res
= {
4156 struct rpc_message msg
= {
4157 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_STATFS
],
4162 nfs_fattr_init(fsstat
->fattr
);
4163 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
4166 static int nfs4_proc_statfs(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsstat
*fsstat
)
4168 struct nfs4_exception exception
= { };
4171 err
= nfs4_handle_exception(server
,
4172 _nfs4_proc_statfs(server
, fhandle
, fsstat
),
4174 } while (exception
.retry
);
4178 static int _nfs4_do_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
4179 struct nfs_fsinfo
*fsinfo
)
4181 struct nfs4_fsinfo_arg args
= {
4183 .bitmask
= server
->attr_bitmask
,
4185 struct nfs4_fsinfo_res res
= {
4188 struct rpc_message msg
= {
4189 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FSINFO
],
4194 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
4197 static int nfs4_do_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsinfo
*fsinfo
)
4199 struct nfs4_exception exception
= { };
4200 unsigned long now
= jiffies
;
4204 err
= _nfs4_do_fsinfo(server
, fhandle
, fsinfo
);
4205 trace_nfs4_fsinfo(server
, fhandle
, fsinfo
->fattr
, err
);
4207 struct nfs_client
*clp
= server
->nfs_client
;
4209 spin_lock(&clp
->cl_lock
);
4210 clp
->cl_lease_time
= fsinfo
->lease_time
* HZ
;
4211 clp
->cl_last_renewal
= now
;
4212 spin_unlock(&clp
->cl_lock
);
4215 err
= nfs4_handle_exception(server
, err
, &exception
);
4216 } while (exception
.retry
);
4220 static int nfs4_proc_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsinfo
*fsinfo
)
4224 nfs_fattr_init(fsinfo
->fattr
);
4225 error
= nfs4_do_fsinfo(server
, fhandle
, fsinfo
);
4227 /* block layout checks this! */
4228 server
->pnfs_blksize
= fsinfo
->blksize
;
4229 set_pnfs_layoutdriver(server
, fhandle
, fsinfo
->layouttype
);
4235 static int _nfs4_proc_pathconf(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
4236 struct nfs_pathconf
*pathconf
)
4238 struct nfs4_pathconf_arg args
= {
4240 .bitmask
= server
->attr_bitmask
,
4242 struct nfs4_pathconf_res res
= {
4243 .pathconf
= pathconf
,
4245 struct rpc_message msg
= {
4246 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_PATHCONF
],
4251 /* None of the pathconf attributes are mandatory to implement */
4252 if ((args
.bitmask
[0] & nfs4_pathconf_bitmap
[0]) == 0) {
4253 memset(pathconf
, 0, sizeof(*pathconf
));
4257 nfs_fattr_init(pathconf
->fattr
);
4258 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
4261 static int nfs4_proc_pathconf(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
4262 struct nfs_pathconf
*pathconf
)
4264 struct nfs4_exception exception
= { };
4268 err
= nfs4_handle_exception(server
,
4269 _nfs4_proc_pathconf(server
, fhandle
, pathconf
),
4271 } while (exception
.retry
);
4275 int nfs4_set_rw_stateid(nfs4_stateid
*stateid
,
4276 const struct nfs_open_context
*ctx
,
4277 const struct nfs_lock_context
*l_ctx
,
4280 const struct nfs_lockowner
*lockowner
= NULL
;
4283 lockowner
= &l_ctx
->lockowner
;
4284 return nfs4_select_rw_stateid(stateid
, ctx
->state
, fmode
, lockowner
);
4286 EXPORT_SYMBOL_GPL(nfs4_set_rw_stateid
);
4288 static bool nfs4_stateid_is_current(nfs4_stateid
*stateid
,
4289 const struct nfs_open_context
*ctx
,
4290 const struct nfs_lock_context
*l_ctx
,
4293 nfs4_stateid current_stateid
;
4295 /* If the current stateid represents a lost lock, then exit */
4296 if (nfs4_set_rw_stateid(¤t_stateid
, ctx
, l_ctx
, fmode
) == -EIO
)
4298 return nfs4_stateid_match(stateid
, ¤t_stateid
);
4301 static bool nfs4_error_stateid_expired(int err
)
4304 case -NFS4ERR_DELEG_REVOKED
:
4305 case -NFS4ERR_ADMIN_REVOKED
:
4306 case -NFS4ERR_BAD_STATEID
:
4307 case -NFS4ERR_STALE_STATEID
:
4308 case -NFS4ERR_OLD_STATEID
:
4309 case -NFS4ERR_OPENMODE
:
4310 case -NFS4ERR_EXPIRED
:
4316 void __nfs4_read_done_cb(struct nfs_pgio_header
*hdr
)
4318 nfs_invalidate_atime(hdr
->inode
);
4321 static int nfs4_read_done_cb(struct rpc_task
*task
, struct nfs_pgio_header
*hdr
)
4323 struct nfs_server
*server
= NFS_SERVER(hdr
->inode
);
4325 trace_nfs4_read(hdr
, task
->tk_status
);
4326 if (nfs4_async_handle_error(task
, server
,
4327 hdr
->args
.context
->state
,
4329 rpc_restart_call_prepare(task
);
4333 __nfs4_read_done_cb(hdr
);
4334 if (task
->tk_status
> 0)
4335 renew_lease(server
, hdr
->timestamp
);
4339 static bool nfs4_read_stateid_changed(struct rpc_task
*task
,
4340 struct nfs_pgio_args
*args
)
4343 if (!nfs4_error_stateid_expired(task
->tk_status
) ||
4344 nfs4_stateid_is_current(&args
->stateid
,
4349 rpc_restart_call_prepare(task
);
4353 static int nfs4_read_done(struct rpc_task
*task
, struct nfs_pgio_header
*hdr
)
4356 dprintk("--> %s\n", __func__
);
4358 if (!nfs4_sequence_done(task
, &hdr
->res
.seq_res
))
4360 if (nfs4_read_stateid_changed(task
, &hdr
->args
))
4362 return hdr
->pgio_done_cb
? hdr
->pgio_done_cb(task
, hdr
) :
4363 nfs4_read_done_cb(task
, hdr
);
4366 static void nfs4_proc_read_setup(struct nfs_pgio_header
*hdr
,
4367 struct rpc_message
*msg
)
4369 hdr
->timestamp
= jiffies
;
4370 hdr
->pgio_done_cb
= nfs4_read_done_cb
;
4371 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READ
];
4372 nfs4_init_sequence(&hdr
->args
.seq_args
, &hdr
->res
.seq_res
, 0);
4375 static int nfs4_proc_pgio_rpc_prepare(struct rpc_task
*task
,
4376 struct nfs_pgio_header
*hdr
)
4378 if (nfs4_setup_sequence(NFS_SERVER(hdr
->inode
),
4379 &hdr
->args
.seq_args
,
4383 if (nfs4_set_rw_stateid(&hdr
->args
.stateid
, hdr
->args
.context
,
4384 hdr
->args
.lock_context
,
4385 hdr
->rw_ops
->rw_mode
) == -EIO
)
4387 if (unlikely(test_bit(NFS_CONTEXT_BAD
, &hdr
->args
.context
->flags
)))
4392 static int nfs4_write_done_cb(struct rpc_task
*task
,
4393 struct nfs_pgio_header
*hdr
)
4395 struct inode
*inode
= hdr
->inode
;
4397 trace_nfs4_write(hdr
, task
->tk_status
);
4398 if (nfs4_async_handle_error(task
, NFS_SERVER(inode
),
4399 hdr
->args
.context
->state
,
4401 rpc_restart_call_prepare(task
);
4404 if (task
->tk_status
>= 0) {
4405 renew_lease(NFS_SERVER(inode
), hdr
->timestamp
);
4406 nfs_writeback_update_inode(hdr
);
4411 static bool nfs4_write_stateid_changed(struct rpc_task
*task
,
4412 struct nfs_pgio_args
*args
)
4415 if (!nfs4_error_stateid_expired(task
->tk_status
) ||
4416 nfs4_stateid_is_current(&args
->stateid
,
4421 rpc_restart_call_prepare(task
);
4425 static int nfs4_write_done(struct rpc_task
*task
, struct nfs_pgio_header
*hdr
)
4427 if (!nfs4_sequence_done(task
, &hdr
->res
.seq_res
))
4429 if (nfs4_write_stateid_changed(task
, &hdr
->args
))
4431 return hdr
->pgio_done_cb
? hdr
->pgio_done_cb(task
, hdr
) :
4432 nfs4_write_done_cb(task
, hdr
);
4436 bool nfs4_write_need_cache_consistency_data(struct nfs_pgio_header
*hdr
)
4438 /* Don't request attributes for pNFS or O_DIRECT writes */
4439 if (hdr
->ds_clp
!= NULL
|| hdr
->dreq
!= NULL
)
4441 /* Otherwise, request attributes if and only if we don't hold
4444 return nfs4_have_delegation(hdr
->inode
, FMODE_READ
) == 0;
4447 static void nfs4_proc_write_setup(struct nfs_pgio_header
*hdr
,
4448 struct rpc_message
*msg
)
4450 struct nfs_server
*server
= NFS_SERVER(hdr
->inode
);
4452 if (!nfs4_write_need_cache_consistency_data(hdr
)) {
4453 hdr
->args
.bitmask
= NULL
;
4454 hdr
->res
.fattr
= NULL
;
4456 hdr
->args
.bitmask
= server
->cache_consistency_bitmask
;
4458 if (!hdr
->pgio_done_cb
)
4459 hdr
->pgio_done_cb
= nfs4_write_done_cb
;
4460 hdr
->res
.server
= server
;
4461 hdr
->timestamp
= jiffies
;
4463 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_WRITE
];
4464 nfs4_init_sequence(&hdr
->args
.seq_args
, &hdr
->res
.seq_res
, 1);
4467 static void nfs4_proc_commit_rpc_prepare(struct rpc_task
*task
, struct nfs_commit_data
*data
)
4469 nfs4_setup_sequence(NFS_SERVER(data
->inode
),
4470 &data
->args
.seq_args
,
4475 static int nfs4_commit_done_cb(struct rpc_task
*task
, struct nfs_commit_data
*data
)
4477 struct inode
*inode
= data
->inode
;
4479 trace_nfs4_commit(data
, task
->tk_status
);
4480 if (nfs4_async_handle_error(task
, NFS_SERVER(inode
),
4481 NULL
, NULL
) == -EAGAIN
) {
4482 rpc_restart_call_prepare(task
);
4488 static int nfs4_commit_done(struct rpc_task
*task
, struct nfs_commit_data
*data
)
4490 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
4492 return data
->commit_done_cb(task
, data
);
4495 static void nfs4_proc_commit_setup(struct nfs_commit_data
*data
, struct rpc_message
*msg
)
4497 struct nfs_server
*server
= NFS_SERVER(data
->inode
);
4499 if (data
->commit_done_cb
== NULL
)
4500 data
->commit_done_cb
= nfs4_commit_done_cb
;
4501 data
->res
.server
= server
;
4502 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_COMMIT
];
4503 nfs4_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
4506 struct nfs4_renewdata
{
4507 struct nfs_client
*client
;
4508 unsigned long timestamp
;
4512 * nfs4_proc_async_renew(): This is not one of the nfs_rpc_ops; it is a special
4513 * standalone procedure for queueing an asynchronous RENEW.
4515 static void nfs4_renew_release(void *calldata
)
4517 struct nfs4_renewdata
*data
= calldata
;
4518 struct nfs_client
*clp
= data
->client
;
4520 if (atomic_read(&clp
->cl_count
) > 1)
4521 nfs4_schedule_state_renewal(clp
);
4522 nfs_put_client(clp
);
4526 static void nfs4_renew_done(struct rpc_task
*task
, void *calldata
)
4528 struct nfs4_renewdata
*data
= calldata
;
4529 struct nfs_client
*clp
= data
->client
;
4530 unsigned long timestamp
= data
->timestamp
;
4532 trace_nfs4_renew_async(clp
, task
->tk_status
);
4533 switch (task
->tk_status
) {
4536 case -NFS4ERR_LEASE_MOVED
:
4537 nfs4_schedule_lease_moved_recovery(clp
);
4540 /* Unless we're shutting down, schedule state recovery! */
4541 if (test_bit(NFS_CS_RENEWD
, &clp
->cl_res_state
) == 0)
4543 if (task
->tk_status
!= NFS4ERR_CB_PATH_DOWN
) {
4544 nfs4_schedule_lease_recovery(clp
);
4547 nfs4_schedule_path_down_recovery(clp
);
4549 do_renew_lease(clp
, timestamp
);
4552 static const struct rpc_call_ops nfs4_renew_ops
= {
4553 .rpc_call_done
= nfs4_renew_done
,
4554 .rpc_release
= nfs4_renew_release
,
4557 static int nfs4_proc_async_renew(struct nfs_client
*clp
, struct rpc_cred
*cred
, unsigned renew_flags
)
4559 struct rpc_message msg
= {
4560 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENEW
],
4564 struct nfs4_renewdata
*data
;
4566 if (renew_flags
== 0)
4568 if (!atomic_inc_not_zero(&clp
->cl_count
))
4570 data
= kmalloc(sizeof(*data
), GFP_NOFS
);
4574 data
->timestamp
= jiffies
;
4575 return rpc_call_async(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
,
4576 &nfs4_renew_ops
, data
);
4579 static int nfs4_proc_renew(struct nfs_client
*clp
, struct rpc_cred
*cred
)
4581 struct rpc_message msg
= {
4582 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENEW
],
4586 unsigned long now
= jiffies
;
4589 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
4592 do_renew_lease(clp
, now
);
4596 static inline int nfs4_server_supports_acls(struct nfs_server
*server
)
4598 return server
->caps
& NFS_CAP_ACLS
;
4601 /* Assuming that XATTR_SIZE_MAX is a multiple of PAGE_SIZE, and that
4602 * it's OK to put sizeof(void) * (XATTR_SIZE_MAX/PAGE_SIZE) bytes on
4605 #define NFS4ACL_MAXPAGES DIV_ROUND_UP(XATTR_SIZE_MAX, PAGE_SIZE)
4607 static int buf_to_pages_noslab(const void *buf
, size_t buflen
,
4608 struct page
**pages
)
4610 struct page
*newpage
, **spages
;
4616 len
= min_t(size_t, PAGE_SIZE
, buflen
);
4617 newpage
= alloc_page(GFP_KERNEL
);
4619 if (newpage
== NULL
)
4621 memcpy(page_address(newpage
), buf
, len
);
4626 } while (buflen
!= 0);
4632 __free_page(spages
[rc
-1]);
4636 struct nfs4_cached_acl
{
4642 static void nfs4_set_cached_acl(struct inode
*inode
, struct nfs4_cached_acl
*acl
)
4644 struct nfs_inode
*nfsi
= NFS_I(inode
);
4646 spin_lock(&inode
->i_lock
);
4647 kfree(nfsi
->nfs4_acl
);
4648 nfsi
->nfs4_acl
= acl
;
4649 spin_unlock(&inode
->i_lock
);
4652 static void nfs4_zap_acl_attr(struct inode
*inode
)
4654 nfs4_set_cached_acl(inode
, NULL
);
4657 static inline ssize_t
nfs4_read_cached_acl(struct inode
*inode
, char *buf
, size_t buflen
)
4659 struct nfs_inode
*nfsi
= NFS_I(inode
);
4660 struct nfs4_cached_acl
*acl
;
4663 spin_lock(&inode
->i_lock
);
4664 acl
= nfsi
->nfs4_acl
;
4667 if (buf
== NULL
) /* user is just asking for length */
4669 if (acl
->cached
== 0)
4671 ret
= -ERANGE
; /* see getxattr(2) man page */
4672 if (acl
->len
> buflen
)
4674 memcpy(buf
, acl
->data
, acl
->len
);
4678 spin_unlock(&inode
->i_lock
);
4682 static void nfs4_write_cached_acl(struct inode
*inode
, struct page
**pages
, size_t pgbase
, size_t acl_len
)
4684 struct nfs4_cached_acl
*acl
;
4685 size_t buflen
= sizeof(*acl
) + acl_len
;
4687 if (buflen
<= PAGE_SIZE
) {
4688 acl
= kmalloc(buflen
, GFP_KERNEL
);
4692 _copy_from_pages(acl
->data
, pages
, pgbase
, acl_len
);
4694 acl
= kmalloc(sizeof(*acl
), GFP_KERNEL
);
4701 nfs4_set_cached_acl(inode
, acl
);
4705 * The getxattr API returns the required buffer length when called with a
4706 * NULL buf. The NFSv4 acl tool then calls getxattr again after allocating
4707 * the required buf. On a NULL buf, we send a page of data to the server
4708 * guessing that the ACL request can be serviced by a page. If so, we cache
4709 * up to the page of ACL data, and the 2nd call to getxattr is serviced by
4710 * the cache. If not so, we throw away the page, and cache the required
4711 * length. The next getxattr call will then produce another round trip to
4712 * the server, this time with the input buf of the required size.
4714 static ssize_t
__nfs4_get_acl_uncached(struct inode
*inode
, void *buf
, size_t buflen
)
4716 struct page
*pages
[NFS4ACL_MAXPAGES
] = {NULL
, };
4717 struct nfs_getaclargs args
= {
4718 .fh
= NFS_FH(inode
),
4722 struct nfs_getaclres res
= {
4725 struct rpc_message msg
= {
4726 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETACL
],
4730 unsigned int npages
= DIV_ROUND_UP(buflen
, PAGE_SIZE
);
4731 int ret
= -ENOMEM
, i
;
4733 /* As long as we're doing a round trip to the server anyway,
4734 * let's be prepared for a page of acl data. */
4737 if (npages
> ARRAY_SIZE(pages
))
4740 for (i
= 0; i
< npages
; i
++) {
4741 pages
[i
] = alloc_page(GFP_KERNEL
);
4746 /* for decoding across pages */
4747 res
.acl_scratch
= alloc_page(GFP_KERNEL
);
4748 if (!res
.acl_scratch
)
4751 args
.acl_len
= npages
* PAGE_SIZE
;
4753 dprintk("%s buf %p buflen %zu npages %d args.acl_len %zu\n",
4754 __func__
, buf
, buflen
, npages
, args
.acl_len
);
4755 ret
= nfs4_call_sync(NFS_SERVER(inode
)->client
, NFS_SERVER(inode
),
4756 &msg
, &args
.seq_args
, &res
.seq_res
, 0);
4760 /* Handle the case where the passed-in buffer is too short */
4761 if (res
.acl_flags
& NFS4_ACL_TRUNC
) {
4762 /* Did the user only issue a request for the acl length? */
4768 nfs4_write_cached_acl(inode
, pages
, res
.acl_data_offset
, res
.acl_len
);
4770 if (res
.acl_len
> buflen
) {
4774 _copy_from_pages(buf
, pages
, res
.acl_data_offset
, res
.acl_len
);
4779 for (i
= 0; i
< npages
; i
++)
4781 __free_page(pages
[i
]);
4782 if (res
.acl_scratch
)
4783 __free_page(res
.acl_scratch
);
4787 static ssize_t
nfs4_get_acl_uncached(struct inode
*inode
, void *buf
, size_t buflen
)
4789 struct nfs4_exception exception
= { };
4792 ret
= __nfs4_get_acl_uncached(inode
, buf
, buflen
);
4793 trace_nfs4_get_acl(inode
, ret
);
4796 ret
= nfs4_handle_exception(NFS_SERVER(inode
), ret
, &exception
);
4797 } while (exception
.retry
);
4801 static ssize_t
nfs4_proc_get_acl(struct inode
*inode
, void *buf
, size_t buflen
)
4803 struct nfs_server
*server
= NFS_SERVER(inode
);
4806 if (!nfs4_server_supports_acls(server
))
4808 ret
= nfs_revalidate_inode(server
, inode
);
4811 if (NFS_I(inode
)->cache_validity
& NFS_INO_INVALID_ACL
)
4812 nfs_zap_acl_cache(inode
);
4813 ret
= nfs4_read_cached_acl(inode
, buf
, buflen
);
4815 /* -ENOENT is returned if there is no ACL or if there is an ACL
4816 * but no cached acl data, just the acl length */
4818 return nfs4_get_acl_uncached(inode
, buf
, buflen
);
4821 static int __nfs4_proc_set_acl(struct inode
*inode
, const void *buf
, size_t buflen
)
4823 struct nfs_server
*server
= NFS_SERVER(inode
);
4824 struct page
*pages
[NFS4ACL_MAXPAGES
];
4825 struct nfs_setaclargs arg
= {
4826 .fh
= NFS_FH(inode
),
4830 struct nfs_setaclres res
;
4831 struct rpc_message msg
= {
4832 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETACL
],
4836 unsigned int npages
= DIV_ROUND_UP(buflen
, PAGE_SIZE
);
4839 if (!nfs4_server_supports_acls(server
))
4841 if (npages
> ARRAY_SIZE(pages
))
4843 i
= buf_to_pages_noslab(buf
, buflen
, arg
.acl_pages
);
4846 nfs4_inode_return_delegation(inode
);
4847 ret
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
4850 * Free each page after tx, so the only ref left is
4851 * held by the network stack
4854 put_page(pages
[i
-1]);
4857 * Acl update can result in inode attribute update.
4858 * so mark the attribute cache invalid.
4860 spin_lock(&inode
->i_lock
);
4861 NFS_I(inode
)->cache_validity
|= NFS_INO_INVALID_ATTR
;
4862 spin_unlock(&inode
->i_lock
);
4863 nfs_access_zap_cache(inode
);
4864 nfs_zap_acl_cache(inode
);
4868 static int nfs4_proc_set_acl(struct inode
*inode
, const void *buf
, size_t buflen
)
4870 struct nfs4_exception exception
= { };
4873 err
= __nfs4_proc_set_acl(inode
, buf
, buflen
);
4874 trace_nfs4_set_acl(inode
, err
);
4875 err
= nfs4_handle_exception(NFS_SERVER(inode
), err
,
4877 } while (exception
.retry
);
4881 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
4882 static int _nfs4_get_security_label(struct inode
*inode
, void *buf
,
4885 struct nfs_server
*server
= NFS_SERVER(inode
);
4886 struct nfs_fattr fattr
;
4887 struct nfs4_label label
= {0, 0, buflen
, buf
};
4889 u32 bitmask
[3] = { 0, 0, FATTR4_WORD2_SECURITY_LABEL
};
4890 struct nfs4_getattr_arg arg
= {
4891 .fh
= NFS_FH(inode
),
4894 struct nfs4_getattr_res res
= {
4899 struct rpc_message msg
= {
4900 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETATTR
],
4906 nfs_fattr_init(&fattr
);
4908 ret
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 0);
4911 if (!(fattr
.valid
& NFS_ATTR_FATTR_V4_SECURITY_LABEL
))
4913 if (buflen
< label
.len
)
4918 static int nfs4_get_security_label(struct inode
*inode
, void *buf
,
4921 struct nfs4_exception exception
= { };
4924 if (!nfs_server_capable(inode
, NFS_CAP_SECURITY_LABEL
))
4928 err
= _nfs4_get_security_label(inode
, buf
, buflen
);
4929 trace_nfs4_get_security_label(inode
, err
);
4930 err
= nfs4_handle_exception(NFS_SERVER(inode
), err
,
4932 } while (exception
.retry
);
4936 static int _nfs4_do_set_security_label(struct inode
*inode
,
4937 struct nfs4_label
*ilabel
,
4938 struct nfs_fattr
*fattr
,
4939 struct nfs4_label
*olabel
)
4942 struct iattr sattr
= {0};
4943 struct nfs_server
*server
= NFS_SERVER(inode
);
4944 const u32 bitmask
[3] = { 0, 0, FATTR4_WORD2_SECURITY_LABEL
};
4945 struct nfs_setattrargs arg
= {
4946 .fh
= NFS_FH(inode
),
4952 struct nfs_setattrres res
= {
4957 struct rpc_message msg
= {
4958 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETATTR
],
4964 nfs4_stateid_copy(&arg
.stateid
, &zero_stateid
);
4966 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
4968 dprintk("%s failed: %d\n", __func__
, status
);
4973 static int nfs4_do_set_security_label(struct inode
*inode
,
4974 struct nfs4_label
*ilabel
,
4975 struct nfs_fattr
*fattr
,
4976 struct nfs4_label
*olabel
)
4978 struct nfs4_exception exception
= { };
4982 err
= _nfs4_do_set_security_label(inode
, ilabel
,
4984 trace_nfs4_set_security_label(inode
, err
);
4985 err
= nfs4_handle_exception(NFS_SERVER(inode
), err
,
4987 } while (exception
.retry
);
4992 nfs4_set_security_label(struct dentry
*dentry
, const void *buf
, size_t buflen
)
4994 struct nfs4_label ilabel
, *olabel
= NULL
;
4995 struct nfs_fattr fattr
;
4996 struct rpc_cred
*cred
;
4997 struct inode
*inode
= d_inode(dentry
);
5000 if (!nfs_server_capable(inode
, NFS_CAP_SECURITY_LABEL
))
5003 nfs_fattr_init(&fattr
);
5007 ilabel
.label
= (char *)buf
;
5008 ilabel
.len
= buflen
;
5010 cred
= rpc_lookup_cred();
5012 return PTR_ERR(cred
);
5014 olabel
= nfs4_label_alloc(NFS_SERVER(inode
), GFP_KERNEL
);
5015 if (IS_ERR(olabel
)) {
5016 status
= -PTR_ERR(olabel
);
5020 status
= nfs4_do_set_security_label(inode
, &ilabel
, &fattr
, olabel
);
5022 nfs_setsecurity(inode
, &fattr
, olabel
);
5024 nfs4_label_free(olabel
);
5029 #endif /* CONFIG_NFS_V4_SECURITY_LABEL */
5032 static void nfs4_init_boot_verifier(const struct nfs_client
*clp
,
5033 nfs4_verifier
*bootverf
)
5037 if (test_bit(NFS4CLNT_PURGE_STATE
, &clp
->cl_state
)) {
5038 /* An impossible timestamp guarantees this value
5039 * will never match a generated boot time. */
5041 verf
[1] = cpu_to_be32(NSEC_PER_SEC
+ 1);
5043 struct nfs_net
*nn
= net_generic(clp
->cl_net
, nfs_net_id
);
5044 verf
[0] = cpu_to_be32(nn
->boot_time
.tv_sec
);
5045 verf
[1] = cpu_to_be32(nn
->boot_time
.tv_nsec
);
5047 memcpy(bootverf
->data
, verf
, sizeof(bootverf
->data
));
5051 nfs4_init_nonuniform_client_string(struct nfs_client
*clp
)
5056 if (clp
->cl_owner_id
!= NULL
)
5060 len
= 14 + strlen(clp
->cl_ipaddr
) + 1 +
5061 strlen(rpc_peeraddr2str(clp
->cl_rpcclient
, RPC_DISPLAY_ADDR
)) +
5063 strlen(rpc_peeraddr2str(clp
->cl_rpcclient
, RPC_DISPLAY_PROTO
)) +
5067 if (len
> NFS4_OPAQUE_LIMIT
+ 1)
5071 * Since this string is allocated at mount time, and held until the
5072 * nfs_client is destroyed, we can use GFP_KERNEL here w/o worrying
5073 * about a memory-reclaim deadlock.
5075 str
= kmalloc(len
, GFP_KERNEL
);
5080 scnprintf(str
, len
, "Linux NFSv4.0 %s/%s %s",
5082 rpc_peeraddr2str(clp
->cl_rpcclient
, RPC_DISPLAY_ADDR
),
5083 rpc_peeraddr2str(clp
->cl_rpcclient
, RPC_DISPLAY_PROTO
));
5086 clp
->cl_owner_id
= str
;
5091 nfs4_init_uniquifier_client_string(struct nfs_client
*clp
)
5096 len
= 10 + 10 + 1 + 10 + 1 +
5097 strlen(nfs4_client_id_uniquifier
) + 1 +
5098 strlen(clp
->cl_rpcclient
->cl_nodename
) + 1;
5100 if (len
> NFS4_OPAQUE_LIMIT
+ 1)
5104 * Since this string is allocated at mount time, and held until the
5105 * nfs_client is destroyed, we can use GFP_KERNEL here w/o worrying
5106 * about a memory-reclaim deadlock.
5108 str
= kmalloc(len
, GFP_KERNEL
);
5112 scnprintf(str
, len
, "Linux NFSv%u.%u %s/%s",
5113 clp
->rpc_ops
->version
, clp
->cl_minorversion
,
5114 nfs4_client_id_uniquifier
,
5115 clp
->cl_rpcclient
->cl_nodename
);
5116 clp
->cl_owner_id
= str
;
5121 nfs4_init_uniform_client_string(struct nfs_client
*clp
)
5126 if (clp
->cl_owner_id
!= NULL
)
5129 if (nfs4_client_id_uniquifier
[0] != '\0')
5130 return nfs4_init_uniquifier_client_string(clp
);
5132 len
= 10 + 10 + 1 + 10 + 1 +
5133 strlen(clp
->cl_rpcclient
->cl_nodename
) + 1;
5135 if (len
> NFS4_OPAQUE_LIMIT
+ 1)
5139 * Since this string is allocated at mount time, and held until the
5140 * nfs_client is destroyed, we can use GFP_KERNEL here w/o worrying
5141 * about a memory-reclaim deadlock.
5143 str
= kmalloc(len
, GFP_KERNEL
);
5147 scnprintf(str
, len
, "Linux NFSv%u.%u %s",
5148 clp
->rpc_ops
->version
, clp
->cl_minorversion
,
5149 clp
->cl_rpcclient
->cl_nodename
);
5150 clp
->cl_owner_id
= str
;
5155 * nfs4_callback_up_net() starts only "tcp" and "tcp6" callback
5156 * services. Advertise one based on the address family of the
5160 nfs4_init_callback_netid(const struct nfs_client
*clp
, char *buf
, size_t len
)
5162 if (strchr(clp
->cl_ipaddr
, ':') != NULL
)
5163 return scnprintf(buf
, len
, "tcp6");
5165 return scnprintf(buf
, len
, "tcp");
5168 static void nfs4_setclientid_done(struct rpc_task
*task
, void *calldata
)
5170 struct nfs4_setclientid
*sc
= calldata
;
5172 if (task
->tk_status
== 0)
5173 sc
->sc_cred
= get_rpccred(task
->tk_rqstp
->rq_cred
);
5176 static const struct rpc_call_ops nfs4_setclientid_ops
= {
5177 .rpc_call_done
= nfs4_setclientid_done
,
5181 * nfs4_proc_setclientid - Negotiate client ID
5182 * @clp: state data structure
5183 * @program: RPC program for NFSv4 callback service
5184 * @port: IP port number for NFS4 callback service
5185 * @cred: RPC credential to use for this call
5186 * @res: where to place the result
5188 * Returns zero, a negative errno, or a negative NFS4ERR status code.
5190 int nfs4_proc_setclientid(struct nfs_client
*clp
, u32 program
,
5191 unsigned short port
, struct rpc_cred
*cred
,
5192 struct nfs4_setclientid_res
*res
)
5194 nfs4_verifier sc_verifier
;
5195 struct nfs4_setclientid setclientid
= {
5196 .sc_verifier
= &sc_verifier
,
5200 struct rpc_message msg
= {
5201 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETCLIENTID
],
5202 .rpc_argp
= &setclientid
,
5206 struct rpc_task
*task
;
5207 struct rpc_task_setup task_setup_data
= {
5208 .rpc_client
= clp
->cl_rpcclient
,
5209 .rpc_message
= &msg
,
5210 .callback_ops
= &nfs4_setclientid_ops
,
5211 .callback_data
= &setclientid
,
5212 .flags
= RPC_TASK_TIMEOUT
,
5216 /* nfs_client_id4 */
5217 nfs4_init_boot_verifier(clp
, &sc_verifier
);
5219 if (test_bit(NFS_CS_MIGRATION
, &clp
->cl_flags
))
5220 status
= nfs4_init_uniform_client_string(clp
);
5222 status
= nfs4_init_nonuniform_client_string(clp
);
5228 setclientid
.sc_netid_len
=
5229 nfs4_init_callback_netid(clp
,
5230 setclientid
.sc_netid
,
5231 sizeof(setclientid
.sc_netid
));
5232 setclientid
.sc_uaddr_len
= scnprintf(setclientid
.sc_uaddr
,
5233 sizeof(setclientid
.sc_uaddr
), "%s.%u.%u",
5234 clp
->cl_ipaddr
, port
>> 8, port
& 255);
5236 dprintk("NFS call setclientid auth=%s, '%s'\n",
5237 clp
->cl_rpcclient
->cl_auth
->au_ops
->au_name
,
5239 task
= rpc_run_task(&task_setup_data
);
5241 status
= PTR_ERR(task
);
5244 status
= task
->tk_status
;
5245 if (setclientid
.sc_cred
) {
5246 clp
->cl_acceptor
= rpcauth_stringify_acceptor(setclientid
.sc_cred
);
5247 put_rpccred(setclientid
.sc_cred
);
5251 trace_nfs4_setclientid(clp
, status
);
5252 dprintk("NFS reply setclientid: %d\n", status
);
5257 * nfs4_proc_setclientid_confirm - Confirm client ID
5258 * @clp: state data structure
5259 * @res: result of a previous SETCLIENTID
5260 * @cred: RPC credential to use for this call
5262 * Returns zero, a negative errno, or a negative NFS4ERR status code.
5264 int nfs4_proc_setclientid_confirm(struct nfs_client
*clp
,
5265 struct nfs4_setclientid_res
*arg
,
5266 struct rpc_cred
*cred
)
5268 struct rpc_message msg
= {
5269 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETCLIENTID_CONFIRM
],
5275 dprintk("NFS call setclientid_confirm auth=%s, (client ID %llx)\n",
5276 clp
->cl_rpcclient
->cl_auth
->au_ops
->au_name
,
5278 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
5279 trace_nfs4_setclientid_confirm(clp
, status
);
5280 dprintk("NFS reply setclientid_confirm: %d\n", status
);
5284 struct nfs4_delegreturndata
{
5285 struct nfs4_delegreturnargs args
;
5286 struct nfs4_delegreturnres res
;
5288 nfs4_stateid stateid
;
5289 unsigned long timestamp
;
5290 struct nfs_fattr fattr
;
5292 struct inode
*inode
;
5297 static void nfs4_delegreturn_done(struct rpc_task
*task
, void *calldata
)
5299 struct nfs4_delegreturndata
*data
= calldata
;
5301 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
5304 trace_nfs4_delegreturn_exit(&data
->args
, &data
->res
, task
->tk_status
);
5305 switch (task
->tk_status
) {
5307 renew_lease(data
->res
.server
, data
->timestamp
);
5308 case -NFS4ERR_ADMIN_REVOKED
:
5309 case -NFS4ERR_DELEG_REVOKED
:
5310 case -NFS4ERR_BAD_STATEID
:
5311 case -NFS4ERR_OLD_STATEID
:
5312 case -NFS4ERR_STALE_STATEID
:
5313 case -NFS4ERR_EXPIRED
:
5314 task
->tk_status
= 0;
5316 pnfs_roc_set_barrier(data
->inode
, data
->roc_barrier
);
5319 if (nfs4_async_handle_error(task
, data
->res
.server
,
5320 NULL
, NULL
) == -EAGAIN
) {
5321 rpc_restart_call_prepare(task
);
5325 data
->rpc_status
= task
->tk_status
;
5328 static void nfs4_delegreturn_release(void *calldata
)
5330 struct nfs4_delegreturndata
*data
= calldata
;
5331 struct inode
*inode
= data
->inode
;
5335 pnfs_roc_release(inode
);
5336 nfs_iput_and_deactive(inode
);
5341 static void nfs4_delegreturn_prepare(struct rpc_task
*task
, void *data
)
5343 struct nfs4_delegreturndata
*d_data
;
5345 d_data
= (struct nfs4_delegreturndata
*)data
;
5347 if (nfs4_wait_on_layoutreturn(d_data
->inode
, task
))
5351 pnfs_roc_get_barrier(d_data
->inode
, &d_data
->roc_barrier
);
5353 nfs4_setup_sequence(d_data
->res
.server
,
5354 &d_data
->args
.seq_args
,
5355 &d_data
->res
.seq_res
,
5359 static const struct rpc_call_ops nfs4_delegreturn_ops
= {
5360 .rpc_call_prepare
= nfs4_delegreturn_prepare
,
5361 .rpc_call_done
= nfs4_delegreturn_done
,
5362 .rpc_release
= nfs4_delegreturn_release
,
5365 static int _nfs4_proc_delegreturn(struct inode
*inode
, struct rpc_cred
*cred
, const nfs4_stateid
*stateid
, int issync
)
5367 struct nfs4_delegreturndata
*data
;
5368 struct nfs_server
*server
= NFS_SERVER(inode
);
5369 struct rpc_task
*task
;
5370 struct rpc_message msg
= {
5371 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DELEGRETURN
],
5374 struct rpc_task_setup task_setup_data
= {
5375 .rpc_client
= server
->client
,
5376 .rpc_message
= &msg
,
5377 .callback_ops
= &nfs4_delegreturn_ops
,
5378 .flags
= RPC_TASK_ASYNC
,
5382 data
= kzalloc(sizeof(*data
), GFP_NOFS
);
5385 nfs4_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
5386 data
->args
.fhandle
= &data
->fh
;
5387 data
->args
.stateid
= &data
->stateid
;
5388 data
->args
.bitmask
= server
->cache_consistency_bitmask
;
5389 nfs_copy_fh(&data
->fh
, NFS_FH(inode
));
5390 nfs4_stateid_copy(&data
->stateid
, stateid
);
5391 data
->res
.fattr
= &data
->fattr
;
5392 data
->res
.server
= server
;
5393 nfs_fattr_init(data
->res
.fattr
);
5394 data
->timestamp
= jiffies
;
5395 data
->rpc_status
= 0;
5396 data
->inode
= nfs_igrab_and_active(inode
);
5398 data
->roc
= nfs4_roc(inode
);
5400 task_setup_data
.callback_data
= data
;
5401 msg
.rpc_argp
= &data
->args
;
5402 msg
.rpc_resp
= &data
->res
;
5403 task
= rpc_run_task(&task_setup_data
);
5405 return PTR_ERR(task
);
5408 status
= nfs4_wait_for_completion_rpc_task(task
);
5411 status
= data
->rpc_status
;
5413 nfs_post_op_update_inode_force_wcc(inode
, &data
->fattr
);
5415 nfs_refresh_inode(inode
, &data
->fattr
);
5421 int nfs4_proc_delegreturn(struct inode
*inode
, struct rpc_cred
*cred
, const nfs4_stateid
*stateid
, int issync
)
5423 struct nfs_server
*server
= NFS_SERVER(inode
);
5424 struct nfs4_exception exception
= { };
5427 err
= _nfs4_proc_delegreturn(inode
, cred
, stateid
, issync
);
5428 trace_nfs4_delegreturn(inode
, stateid
, err
);
5430 case -NFS4ERR_STALE_STATEID
:
5431 case -NFS4ERR_EXPIRED
:
5435 err
= nfs4_handle_exception(server
, err
, &exception
);
5436 } while (exception
.retry
);
5440 #define NFS4_LOCK_MINTIMEOUT (1 * HZ)
5441 #define NFS4_LOCK_MAXTIMEOUT (30 * HZ)
5444 * sleep, with exponential backoff, and retry the LOCK operation.
5446 static unsigned long
5447 nfs4_set_lock_task_retry(unsigned long timeout
)
5449 freezable_schedule_timeout_killable_unsafe(timeout
);
5451 if (timeout
> NFS4_LOCK_MAXTIMEOUT
)
5452 return NFS4_LOCK_MAXTIMEOUT
;
5456 static int _nfs4_proc_getlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
5458 struct inode
*inode
= state
->inode
;
5459 struct nfs_server
*server
= NFS_SERVER(inode
);
5460 struct nfs_client
*clp
= server
->nfs_client
;
5461 struct nfs_lockt_args arg
= {
5462 .fh
= NFS_FH(inode
),
5465 struct nfs_lockt_res res
= {
5468 struct rpc_message msg
= {
5469 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCKT
],
5472 .rpc_cred
= state
->owner
->so_cred
,
5474 struct nfs4_lock_state
*lsp
;
5477 arg
.lock_owner
.clientid
= clp
->cl_clientid
;
5478 status
= nfs4_set_lock_state(state
, request
);
5481 lsp
= request
->fl_u
.nfs4_fl
.owner
;
5482 arg
.lock_owner
.id
= lsp
->ls_seqid
.owner_id
;
5483 arg
.lock_owner
.s_dev
= server
->s_dev
;
5484 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
5487 request
->fl_type
= F_UNLCK
;
5489 case -NFS4ERR_DENIED
:
5492 request
->fl_ops
->fl_release_private(request
);
5493 request
->fl_ops
= NULL
;
5498 static int nfs4_proc_getlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
5500 struct nfs4_exception exception
= { };
5504 err
= _nfs4_proc_getlk(state
, cmd
, request
);
5505 trace_nfs4_get_lock(request
, state
, cmd
, err
);
5506 err
= nfs4_handle_exception(NFS_SERVER(state
->inode
), err
,
5508 } while (exception
.retry
);
5512 static int do_vfs_lock(struct inode
*inode
, struct file_lock
*fl
)
5514 return locks_lock_inode_wait(inode
, fl
);
5517 struct nfs4_unlockdata
{
5518 struct nfs_locku_args arg
;
5519 struct nfs_locku_res res
;
5520 struct nfs4_lock_state
*lsp
;
5521 struct nfs_open_context
*ctx
;
5522 struct file_lock fl
;
5523 struct nfs_server
*server
;
5524 unsigned long timestamp
;
5527 static struct nfs4_unlockdata
*nfs4_alloc_unlockdata(struct file_lock
*fl
,
5528 struct nfs_open_context
*ctx
,
5529 struct nfs4_lock_state
*lsp
,
5530 struct nfs_seqid
*seqid
)
5532 struct nfs4_unlockdata
*p
;
5533 struct inode
*inode
= lsp
->ls_state
->inode
;
5535 p
= kzalloc(sizeof(*p
), GFP_NOFS
);
5538 p
->arg
.fh
= NFS_FH(inode
);
5540 p
->arg
.seqid
= seqid
;
5541 p
->res
.seqid
= seqid
;
5543 atomic_inc(&lsp
->ls_count
);
5544 /* Ensure we don't close file until we're done freeing locks! */
5545 p
->ctx
= get_nfs_open_context(ctx
);
5546 memcpy(&p
->fl
, fl
, sizeof(p
->fl
));
5547 p
->server
= NFS_SERVER(inode
);
5551 static void nfs4_locku_release_calldata(void *data
)
5553 struct nfs4_unlockdata
*calldata
= data
;
5554 nfs_free_seqid(calldata
->arg
.seqid
);
5555 nfs4_put_lock_state(calldata
->lsp
);
5556 put_nfs_open_context(calldata
->ctx
);
5560 static void nfs4_locku_done(struct rpc_task
*task
, void *data
)
5562 struct nfs4_unlockdata
*calldata
= data
;
5564 if (!nfs4_sequence_done(task
, &calldata
->res
.seq_res
))
5566 switch (task
->tk_status
) {
5568 renew_lease(calldata
->server
, calldata
->timestamp
);
5569 do_vfs_lock(calldata
->lsp
->ls_state
->inode
, &calldata
->fl
);
5570 if (nfs4_update_lock_stateid(calldata
->lsp
,
5571 &calldata
->res
.stateid
))
5573 case -NFS4ERR_BAD_STATEID
:
5574 case -NFS4ERR_OLD_STATEID
:
5575 case -NFS4ERR_STALE_STATEID
:
5576 case -NFS4ERR_EXPIRED
:
5577 if (!nfs4_stateid_match(&calldata
->arg
.stateid
,
5578 &calldata
->lsp
->ls_stateid
))
5579 rpc_restart_call_prepare(task
);
5582 if (nfs4_async_handle_error(task
, calldata
->server
,
5583 NULL
, NULL
) == -EAGAIN
)
5584 rpc_restart_call_prepare(task
);
5586 nfs_release_seqid(calldata
->arg
.seqid
);
5589 static void nfs4_locku_prepare(struct rpc_task
*task
, void *data
)
5591 struct nfs4_unlockdata
*calldata
= data
;
5593 if (nfs_wait_on_sequence(calldata
->arg
.seqid
, task
) != 0)
5595 nfs4_stateid_copy(&calldata
->arg
.stateid
, &calldata
->lsp
->ls_stateid
);
5596 if (test_bit(NFS_LOCK_INITIALIZED
, &calldata
->lsp
->ls_flags
) == 0) {
5597 /* Note: exit _without_ running nfs4_locku_done */
5600 calldata
->timestamp
= jiffies
;
5601 if (nfs4_setup_sequence(calldata
->server
,
5602 &calldata
->arg
.seq_args
,
5603 &calldata
->res
.seq_res
,
5605 nfs_release_seqid(calldata
->arg
.seqid
);
5608 task
->tk_action
= NULL
;
5610 nfs4_sequence_done(task
, &calldata
->res
.seq_res
);
5613 static const struct rpc_call_ops nfs4_locku_ops
= {
5614 .rpc_call_prepare
= nfs4_locku_prepare
,
5615 .rpc_call_done
= nfs4_locku_done
,
5616 .rpc_release
= nfs4_locku_release_calldata
,
5619 static struct rpc_task
*nfs4_do_unlck(struct file_lock
*fl
,
5620 struct nfs_open_context
*ctx
,
5621 struct nfs4_lock_state
*lsp
,
5622 struct nfs_seqid
*seqid
)
5624 struct nfs4_unlockdata
*data
;
5625 struct rpc_message msg
= {
5626 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCKU
],
5627 .rpc_cred
= ctx
->cred
,
5629 struct rpc_task_setup task_setup_data
= {
5630 .rpc_client
= NFS_CLIENT(lsp
->ls_state
->inode
),
5631 .rpc_message
= &msg
,
5632 .callback_ops
= &nfs4_locku_ops
,
5633 .workqueue
= nfsiod_workqueue
,
5634 .flags
= RPC_TASK_ASYNC
,
5637 nfs4_state_protect(NFS_SERVER(lsp
->ls_state
->inode
)->nfs_client
,
5638 NFS_SP4_MACH_CRED_CLEANUP
, &task_setup_data
.rpc_client
, &msg
);
5640 /* Ensure this is an unlock - when canceling a lock, the
5641 * canceled lock is passed in, and it won't be an unlock.
5643 fl
->fl_type
= F_UNLCK
;
5645 data
= nfs4_alloc_unlockdata(fl
, ctx
, lsp
, seqid
);
5647 nfs_free_seqid(seqid
);
5648 return ERR_PTR(-ENOMEM
);
5651 nfs4_init_sequence(&data
->arg
.seq_args
, &data
->res
.seq_res
, 1);
5652 msg
.rpc_argp
= &data
->arg
;
5653 msg
.rpc_resp
= &data
->res
;
5654 task_setup_data
.callback_data
= data
;
5655 return rpc_run_task(&task_setup_data
);
5658 static int nfs4_proc_unlck(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
5660 struct inode
*inode
= state
->inode
;
5661 struct nfs4_state_owner
*sp
= state
->owner
;
5662 struct nfs_inode
*nfsi
= NFS_I(inode
);
5663 struct nfs_seqid
*seqid
;
5664 struct nfs4_lock_state
*lsp
;
5665 struct rpc_task
*task
;
5666 struct nfs_seqid
*(*alloc_seqid
)(struct nfs_seqid_counter
*, gfp_t
);
5668 unsigned char fl_flags
= request
->fl_flags
;
5670 status
= nfs4_set_lock_state(state
, request
);
5671 /* Unlock _before_ we do the RPC call */
5672 request
->fl_flags
|= FL_EXISTS
;
5673 /* Exclude nfs_delegation_claim_locks() */
5674 mutex_lock(&sp
->so_delegreturn_mutex
);
5675 /* Exclude nfs4_reclaim_open_stateid() - note nesting! */
5676 down_read(&nfsi
->rwsem
);
5677 if (do_vfs_lock(inode
, request
) == -ENOENT
) {
5678 up_read(&nfsi
->rwsem
);
5679 mutex_unlock(&sp
->so_delegreturn_mutex
);
5682 up_read(&nfsi
->rwsem
);
5683 mutex_unlock(&sp
->so_delegreturn_mutex
);
5686 /* Is this a delegated lock? */
5687 lsp
= request
->fl_u
.nfs4_fl
.owner
;
5688 if (test_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
) == 0)
5690 alloc_seqid
= NFS_SERVER(inode
)->nfs_client
->cl_mvops
->alloc_seqid
;
5691 seqid
= alloc_seqid(&lsp
->ls_seqid
, GFP_KERNEL
);
5695 task
= nfs4_do_unlck(request
, nfs_file_open_context(request
->fl_file
), lsp
, seqid
);
5696 status
= PTR_ERR(task
);
5699 status
= nfs4_wait_for_completion_rpc_task(task
);
5702 request
->fl_flags
= fl_flags
;
5703 trace_nfs4_unlock(request
, state
, F_SETLK
, status
);
5707 struct nfs4_lockdata
{
5708 struct nfs_lock_args arg
;
5709 struct nfs_lock_res res
;
5710 struct nfs4_lock_state
*lsp
;
5711 struct nfs_open_context
*ctx
;
5712 struct file_lock fl
;
5713 unsigned long timestamp
;
5716 struct nfs_server
*server
;
5719 static struct nfs4_lockdata
*nfs4_alloc_lockdata(struct file_lock
*fl
,
5720 struct nfs_open_context
*ctx
, struct nfs4_lock_state
*lsp
,
5723 struct nfs4_lockdata
*p
;
5724 struct inode
*inode
= lsp
->ls_state
->inode
;
5725 struct nfs_server
*server
= NFS_SERVER(inode
);
5726 struct nfs_seqid
*(*alloc_seqid
)(struct nfs_seqid_counter
*, gfp_t
);
5728 p
= kzalloc(sizeof(*p
), gfp_mask
);
5732 p
->arg
.fh
= NFS_FH(inode
);
5734 p
->arg
.open_seqid
= nfs_alloc_seqid(&lsp
->ls_state
->owner
->so_seqid
, gfp_mask
);
5735 if (IS_ERR(p
->arg
.open_seqid
))
5737 alloc_seqid
= server
->nfs_client
->cl_mvops
->alloc_seqid
;
5738 p
->arg
.lock_seqid
= alloc_seqid(&lsp
->ls_seqid
, gfp_mask
);
5739 if (IS_ERR(p
->arg
.lock_seqid
))
5740 goto out_free_seqid
;
5741 p
->arg
.lock_owner
.clientid
= server
->nfs_client
->cl_clientid
;
5742 p
->arg
.lock_owner
.id
= lsp
->ls_seqid
.owner_id
;
5743 p
->arg
.lock_owner
.s_dev
= server
->s_dev
;
5744 p
->res
.lock_seqid
= p
->arg
.lock_seqid
;
5747 atomic_inc(&lsp
->ls_count
);
5748 p
->ctx
= get_nfs_open_context(ctx
);
5749 get_file(fl
->fl_file
);
5750 memcpy(&p
->fl
, fl
, sizeof(p
->fl
));
5753 nfs_free_seqid(p
->arg
.open_seqid
);
5759 static void nfs4_lock_prepare(struct rpc_task
*task
, void *calldata
)
5761 struct nfs4_lockdata
*data
= calldata
;
5762 struct nfs4_state
*state
= data
->lsp
->ls_state
;
5764 dprintk("%s: begin!\n", __func__
);
5765 if (nfs_wait_on_sequence(data
->arg
.lock_seqid
, task
) != 0)
5767 /* Do we need to do an open_to_lock_owner? */
5768 if (!test_bit(NFS_LOCK_INITIALIZED
, &data
->lsp
->ls_flags
)) {
5769 if (nfs_wait_on_sequence(data
->arg
.open_seqid
, task
) != 0) {
5770 goto out_release_lock_seqid
;
5772 nfs4_stateid_copy(&data
->arg
.open_stateid
,
5773 &state
->open_stateid
);
5774 data
->arg
.new_lock_owner
= 1;
5775 data
->res
.open_seqid
= data
->arg
.open_seqid
;
5777 data
->arg
.new_lock_owner
= 0;
5778 nfs4_stateid_copy(&data
->arg
.lock_stateid
,
5779 &data
->lsp
->ls_stateid
);
5781 if (!nfs4_valid_open_stateid(state
)) {
5782 data
->rpc_status
= -EBADF
;
5783 task
->tk_action
= NULL
;
5784 goto out_release_open_seqid
;
5786 data
->timestamp
= jiffies
;
5787 if (nfs4_setup_sequence(data
->server
,
5788 &data
->arg
.seq_args
,
5792 out_release_open_seqid
:
5793 nfs_release_seqid(data
->arg
.open_seqid
);
5794 out_release_lock_seqid
:
5795 nfs_release_seqid(data
->arg
.lock_seqid
);
5797 nfs4_sequence_done(task
, &data
->res
.seq_res
);
5798 dprintk("%s: done!, ret = %d\n", __func__
, data
->rpc_status
);
5801 static void nfs4_lock_done(struct rpc_task
*task
, void *calldata
)
5803 struct nfs4_lockdata
*data
= calldata
;
5804 struct nfs4_lock_state
*lsp
= data
->lsp
;
5806 dprintk("%s: begin!\n", __func__
);
5808 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
5811 data
->rpc_status
= task
->tk_status
;
5812 switch (task
->tk_status
) {
5814 renew_lease(NFS_SERVER(d_inode(data
->ctx
->dentry
)),
5816 if (data
->arg
.new_lock
) {
5817 data
->fl
.fl_flags
&= ~(FL_SLEEP
| FL_ACCESS
);
5818 if (do_vfs_lock(lsp
->ls_state
->inode
, &data
->fl
) < 0) {
5819 rpc_restart_call_prepare(task
);
5823 if (data
->arg
.new_lock_owner
!= 0) {
5824 nfs_confirm_seqid(&lsp
->ls_seqid
, 0);
5825 nfs4_stateid_copy(&lsp
->ls_stateid
, &data
->res
.stateid
);
5826 set_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
);
5827 } else if (!nfs4_update_lock_stateid(lsp
, &data
->res
.stateid
))
5828 rpc_restart_call_prepare(task
);
5830 case -NFS4ERR_BAD_STATEID
:
5831 case -NFS4ERR_OLD_STATEID
:
5832 case -NFS4ERR_STALE_STATEID
:
5833 case -NFS4ERR_EXPIRED
:
5834 if (data
->arg
.new_lock_owner
!= 0) {
5835 if (!nfs4_stateid_match(&data
->arg
.open_stateid
,
5836 &lsp
->ls_state
->open_stateid
))
5837 rpc_restart_call_prepare(task
);
5838 } else if (!nfs4_stateid_match(&data
->arg
.lock_stateid
,
5840 rpc_restart_call_prepare(task
);
5842 dprintk("%s: done, ret = %d!\n", __func__
, data
->rpc_status
);
5845 static void nfs4_lock_release(void *calldata
)
5847 struct nfs4_lockdata
*data
= calldata
;
5849 dprintk("%s: begin!\n", __func__
);
5850 nfs_free_seqid(data
->arg
.open_seqid
);
5851 if (data
->cancelled
!= 0) {
5852 struct rpc_task
*task
;
5853 task
= nfs4_do_unlck(&data
->fl
, data
->ctx
, data
->lsp
,
5854 data
->arg
.lock_seqid
);
5856 rpc_put_task_async(task
);
5857 dprintk("%s: cancelling lock!\n", __func__
);
5859 nfs_free_seqid(data
->arg
.lock_seqid
);
5860 nfs4_put_lock_state(data
->lsp
);
5861 put_nfs_open_context(data
->ctx
);
5862 fput(data
->fl
.fl_file
);
5864 dprintk("%s: done!\n", __func__
);
5867 static const struct rpc_call_ops nfs4_lock_ops
= {
5868 .rpc_call_prepare
= nfs4_lock_prepare
,
5869 .rpc_call_done
= nfs4_lock_done
,
5870 .rpc_release
= nfs4_lock_release
,
5873 static void nfs4_handle_setlk_error(struct nfs_server
*server
, struct nfs4_lock_state
*lsp
, int new_lock_owner
, int error
)
5876 case -NFS4ERR_ADMIN_REVOKED
:
5877 case -NFS4ERR_BAD_STATEID
:
5878 lsp
->ls_seqid
.flags
&= ~NFS_SEQID_CONFIRMED
;
5879 if (new_lock_owner
!= 0 ||
5880 test_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
) != 0)
5881 nfs4_schedule_stateid_recovery(server
, lsp
->ls_state
);
5883 case -NFS4ERR_STALE_STATEID
:
5884 lsp
->ls_seqid
.flags
&= ~NFS_SEQID_CONFIRMED
;
5885 case -NFS4ERR_EXPIRED
:
5886 nfs4_schedule_lease_recovery(server
->nfs_client
);
5890 static int _nfs4_do_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*fl
, int recovery_type
)
5892 struct nfs4_lockdata
*data
;
5893 struct rpc_task
*task
;
5894 struct rpc_message msg
= {
5895 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCK
],
5896 .rpc_cred
= state
->owner
->so_cred
,
5898 struct rpc_task_setup task_setup_data
= {
5899 .rpc_client
= NFS_CLIENT(state
->inode
),
5900 .rpc_message
= &msg
,
5901 .callback_ops
= &nfs4_lock_ops
,
5902 .workqueue
= nfsiod_workqueue
,
5903 .flags
= RPC_TASK_ASYNC
,
5907 dprintk("%s: begin!\n", __func__
);
5908 data
= nfs4_alloc_lockdata(fl
, nfs_file_open_context(fl
->fl_file
),
5909 fl
->fl_u
.nfs4_fl
.owner
,
5910 recovery_type
== NFS_LOCK_NEW
? GFP_KERNEL
: GFP_NOFS
);
5914 data
->arg
.block
= 1;
5915 nfs4_init_sequence(&data
->arg
.seq_args
, &data
->res
.seq_res
, 1);
5916 msg
.rpc_argp
= &data
->arg
;
5917 msg
.rpc_resp
= &data
->res
;
5918 task_setup_data
.callback_data
= data
;
5919 if (recovery_type
> NFS_LOCK_NEW
) {
5920 if (recovery_type
== NFS_LOCK_RECLAIM
)
5921 data
->arg
.reclaim
= NFS_LOCK_RECLAIM
;
5922 nfs4_set_sequence_privileged(&data
->arg
.seq_args
);
5924 data
->arg
.new_lock
= 1;
5925 task
= rpc_run_task(&task_setup_data
);
5927 return PTR_ERR(task
);
5928 ret
= nfs4_wait_for_completion_rpc_task(task
);
5930 ret
= data
->rpc_status
;
5932 nfs4_handle_setlk_error(data
->server
, data
->lsp
,
5933 data
->arg
.new_lock_owner
, ret
);
5935 data
->cancelled
= 1;
5937 dprintk("%s: done, ret = %d!\n", __func__
, ret
);
5938 trace_nfs4_set_lock(fl
, state
, &data
->res
.stateid
, cmd
, ret
);
5942 static int nfs4_lock_reclaim(struct nfs4_state
*state
, struct file_lock
*request
)
5944 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
5945 struct nfs4_exception exception
= {
5946 .inode
= state
->inode
,
5951 /* Cache the lock if possible... */
5952 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) != 0)
5954 err
= _nfs4_do_setlk(state
, F_SETLK
, request
, NFS_LOCK_RECLAIM
);
5955 if (err
!= -NFS4ERR_DELAY
)
5957 nfs4_handle_exception(server
, err
, &exception
);
5958 } while (exception
.retry
);
5962 static int nfs4_lock_expired(struct nfs4_state
*state
, struct file_lock
*request
)
5964 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
5965 struct nfs4_exception exception
= {
5966 .inode
= state
->inode
,
5970 err
= nfs4_set_lock_state(state
, request
);
5973 if (!recover_lost_locks
) {
5974 set_bit(NFS_LOCK_LOST
, &request
->fl_u
.nfs4_fl
.owner
->ls_flags
);
5978 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) != 0)
5980 err
= _nfs4_do_setlk(state
, F_SETLK
, request
, NFS_LOCK_EXPIRED
);
5984 case -NFS4ERR_GRACE
:
5985 case -NFS4ERR_DELAY
:
5986 nfs4_handle_exception(server
, err
, &exception
);
5989 } while (exception
.retry
);
5994 #if defined(CONFIG_NFS_V4_1)
5996 * nfs41_check_expired_locks - possibly free a lock stateid
5998 * @state: NFSv4 state for an inode
6000 * Returns NFS_OK if recovery for this stateid is now finished.
6001 * Otherwise a negative NFS4ERR value is returned.
6003 static int nfs41_check_expired_locks(struct nfs4_state
*state
)
6005 int status
, ret
= -NFS4ERR_BAD_STATEID
;
6006 struct nfs4_lock_state
*lsp
;
6007 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
6009 list_for_each_entry(lsp
, &state
->lock_states
, ls_locks
) {
6010 if (test_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
)) {
6011 struct rpc_cred
*cred
= lsp
->ls_state
->owner
->so_cred
;
6013 status
= nfs41_test_stateid(server
,
6016 trace_nfs4_test_lock_stateid(state
, lsp
, status
);
6017 if (status
!= NFS_OK
) {
6018 /* Free the stateid unless the server
6019 * informs us the stateid is unrecognized. */
6020 if (status
!= -NFS4ERR_BAD_STATEID
)
6021 nfs41_free_stateid(server
,
6024 clear_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
);
6033 static int nfs41_lock_expired(struct nfs4_state
*state
, struct file_lock
*request
)
6035 int status
= NFS_OK
;
6037 if (test_bit(LK_STATE_IN_USE
, &state
->flags
))
6038 status
= nfs41_check_expired_locks(state
);
6039 if (status
!= NFS_OK
)
6040 status
= nfs4_lock_expired(state
, request
);
6045 static int _nfs4_proc_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
6047 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
6048 unsigned char fl_flags
= request
->fl_flags
;
6049 int status
= -ENOLCK
;
6051 if ((fl_flags
& FL_POSIX
) &&
6052 !test_bit(NFS_STATE_POSIX_LOCKS
, &state
->flags
))
6054 /* Is this a delegated open? */
6055 status
= nfs4_set_lock_state(state
, request
);
6058 request
->fl_flags
|= FL_ACCESS
;
6059 status
= do_vfs_lock(state
->inode
, request
);
6062 down_read(&nfsi
->rwsem
);
6063 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
)) {
6064 /* Yes: cache locks! */
6065 /* ...but avoid races with delegation recall... */
6066 request
->fl_flags
= fl_flags
& ~FL_SLEEP
;
6067 status
= do_vfs_lock(state
->inode
, request
);
6068 up_read(&nfsi
->rwsem
);
6071 up_read(&nfsi
->rwsem
);
6072 status
= _nfs4_do_setlk(state
, cmd
, request
, NFS_LOCK_NEW
);
6074 request
->fl_flags
= fl_flags
;
6078 static int nfs4_proc_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
6080 struct nfs4_exception exception
= {
6082 .inode
= state
->inode
,
6087 err
= _nfs4_proc_setlk(state
, cmd
, request
);
6088 if (err
== -NFS4ERR_DENIED
)
6090 err
= nfs4_handle_exception(NFS_SERVER(state
->inode
),
6092 } while (exception
.retry
);
6097 nfs4_proc_lock(struct file
*filp
, int cmd
, struct file_lock
*request
)
6099 struct nfs_open_context
*ctx
;
6100 struct nfs4_state
*state
;
6101 unsigned long timeout
= NFS4_LOCK_MINTIMEOUT
;
6104 /* verify open state */
6105 ctx
= nfs_file_open_context(filp
);
6108 if (request
->fl_start
< 0 || request
->fl_end
< 0)
6111 if (IS_GETLK(cmd
)) {
6113 return nfs4_proc_getlk(state
, F_GETLK
, request
);
6117 if (!(IS_SETLK(cmd
) || IS_SETLKW(cmd
)))
6120 if (request
->fl_type
== F_UNLCK
) {
6122 return nfs4_proc_unlck(state
, cmd
, request
);
6129 * Don't rely on the VFS having checked the file open mode,
6130 * since it won't do this for flock() locks.
6132 switch (request
->fl_type
) {
6134 if (!(filp
->f_mode
& FMODE_READ
))
6138 if (!(filp
->f_mode
& FMODE_WRITE
))
6143 status
= nfs4_proc_setlk(state
, cmd
, request
);
6144 if ((status
!= -EAGAIN
) || IS_SETLK(cmd
))
6146 timeout
= nfs4_set_lock_task_retry(timeout
);
6147 status
= -ERESTARTSYS
;
6150 } while(status
< 0);
6154 int nfs4_lock_delegation_recall(struct file_lock
*fl
, struct nfs4_state
*state
, const nfs4_stateid
*stateid
)
6156 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
6159 err
= nfs4_set_lock_state(state
, fl
);
6162 err
= _nfs4_do_setlk(state
, F_SETLK
, fl
, NFS_LOCK_NEW
);
6163 return nfs4_handle_delegation_recall_error(server
, state
, stateid
, err
);
6166 struct nfs_release_lockowner_data
{
6167 struct nfs4_lock_state
*lsp
;
6168 struct nfs_server
*server
;
6169 struct nfs_release_lockowner_args args
;
6170 struct nfs_release_lockowner_res res
;
6171 unsigned long timestamp
;
6174 static void nfs4_release_lockowner_prepare(struct rpc_task
*task
, void *calldata
)
6176 struct nfs_release_lockowner_data
*data
= calldata
;
6177 struct nfs_server
*server
= data
->server
;
6178 nfs40_setup_sequence(server
->nfs_client
->cl_slot_tbl
,
6179 &data
->args
.seq_args
, &data
->res
.seq_res
, task
);
6180 data
->args
.lock_owner
.clientid
= server
->nfs_client
->cl_clientid
;
6181 data
->timestamp
= jiffies
;
6184 static void nfs4_release_lockowner_done(struct rpc_task
*task
, void *calldata
)
6186 struct nfs_release_lockowner_data
*data
= calldata
;
6187 struct nfs_server
*server
= data
->server
;
6189 nfs40_sequence_done(task
, &data
->res
.seq_res
);
6191 switch (task
->tk_status
) {
6193 renew_lease(server
, data
->timestamp
);
6195 case -NFS4ERR_STALE_CLIENTID
:
6196 case -NFS4ERR_EXPIRED
:
6197 nfs4_schedule_lease_recovery(server
->nfs_client
);
6199 case -NFS4ERR_LEASE_MOVED
:
6200 case -NFS4ERR_DELAY
:
6201 if (nfs4_async_handle_error(task
, server
,
6202 NULL
, NULL
) == -EAGAIN
)
6203 rpc_restart_call_prepare(task
);
6207 static void nfs4_release_lockowner_release(void *calldata
)
6209 struct nfs_release_lockowner_data
*data
= calldata
;
6210 nfs4_free_lock_state(data
->server
, data
->lsp
);
6214 static const struct rpc_call_ops nfs4_release_lockowner_ops
= {
6215 .rpc_call_prepare
= nfs4_release_lockowner_prepare
,
6216 .rpc_call_done
= nfs4_release_lockowner_done
,
6217 .rpc_release
= nfs4_release_lockowner_release
,
6221 nfs4_release_lockowner(struct nfs_server
*server
, struct nfs4_lock_state
*lsp
)
6223 struct nfs_release_lockowner_data
*data
;
6224 struct rpc_message msg
= {
6225 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RELEASE_LOCKOWNER
],
6228 if (server
->nfs_client
->cl_mvops
->minor_version
!= 0)
6231 data
= kmalloc(sizeof(*data
), GFP_NOFS
);
6235 data
->server
= server
;
6236 data
->args
.lock_owner
.clientid
= server
->nfs_client
->cl_clientid
;
6237 data
->args
.lock_owner
.id
= lsp
->ls_seqid
.owner_id
;
6238 data
->args
.lock_owner
.s_dev
= server
->s_dev
;
6240 msg
.rpc_argp
= &data
->args
;
6241 msg
.rpc_resp
= &data
->res
;
6242 nfs4_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 0);
6243 rpc_call_async(server
->client
, &msg
, 0, &nfs4_release_lockowner_ops
, data
);
6246 #define XATTR_NAME_NFSV4_ACL "system.nfs4_acl"
6248 static int nfs4_xattr_set_nfs4_acl(const struct xattr_handler
*handler
,
6249 struct dentry
*dentry
, const char *key
,
6250 const void *buf
, size_t buflen
,
6253 if (strcmp(key
, "") != 0)
6256 return nfs4_proc_set_acl(d_inode(dentry
), buf
, buflen
);
6259 static int nfs4_xattr_get_nfs4_acl(const struct xattr_handler
*handler
,
6260 struct dentry
*dentry
, const char *key
,
6261 void *buf
, size_t buflen
)
6263 if (strcmp(key
, "") != 0)
6266 return nfs4_proc_get_acl(d_inode(dentry
), buf
, buflen
);
6269 static size_t nfs4_xattr_list_nfs4_acl(const struct xattr_handler
*handler
,
6270 struct dentry
*dentry
, char *list
,
6271 size_t list_len
, const char *name
,
6274 size_t len
= sizeof(XATTR_NAME_NFSV4_ACL
);
6276 if (!nfs4_server_supports_acls(NFS_SERVER(d_inode(dentry
))))
6279 if (list
&& len
<= list_len
)
6280 memcpy(list
, XATTR_NAME_NFSV4_ACL
, len
);
6284 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
6285 static inline int nfs4_server_supports_labels(struct nfs_server
*server
)
6287 return server
->caps
& NFS_CAP_SECURITY_LABEL
;
6290 static int nfs4_xattr_set_nfs4_label(const struct xattr_handler
*handler
,
6291 struct dentry
*dentry
, const char *key
,
6292 const void *buf
, size_t buflen
,
6295 if (security_ismaclabel(key
))
6296 return nfs4_set_security_label(dentry
, buf
, buflen
);
6301 static int nfs4_xattr_get_nfs4_label(const struct xattr_handler
*handler
,
6302 struct dentry
*dentry
, const char *key
,
6303 void *buf
, size_t buflen
)
6305 if (security_ismaclabel(key
))
6306 return nfs4_get_security_label(d_inode(dentry
), buf
, buflen
);
6310 static size_t nfs4_xattr_list_nfs4_label(const struct xattr_handler
*handler
,
6311 struct dentry
*dentry
, char *list
,
6312 size_t list_len
, const char *name
,
6317 if (nfs_server_capable(d_inode(dentry
), NFS_CAP_SECURITY_LABEL
)) {
6318 len
= security_inode_listsecurity(d_inode(dentry
), NULL
, 0);
6319 if (list
&& len
<= list_len
)
6320 security_inode_listsecurity(d_inode(dentry
), list
, len
);
6325 static const struct xattr_handler nfs4_xattr_nfs4_label_handler
= {
6326 .prefix
= XATTR_SECURITY_PREFIX
,
6327 .list
= nfs4_xattr_list_nfs4_label
,
6328 .get
= nfs4_xattr_get_nfs4_label
,
6329 .set
= nfs4_xattr_set_nfs4_label
,
6335 * nfs_fhget will use either the mounted_on_fileid or the fileid
6337 static void nfs_fixup_referral_attributes(struct nfs_fattr
*fattr
)
6339 if (!(((fattr
->valid
& NFS_ATTR_FATTR_MOUNTED_ON_FILEID
) ||
6340 (fattr
->valid
& NFS_ATTR_FATTR_FILEID
)) &&
6341 (fattr
->valid
& NFS_ATTR_FATTR_FSID
) &&
6342 (fattr
->valid
& NFS_ATTR_FATTR_V4_LOCATIONS
)))
6345 fattr
->valid
|= NFS_ATTR_FATTR_TYPE
| NFS_ATTR_FATTR_MODE
|
6346 NFS_ATTR_FATTR_NLINK
| NFS_ATTR_FATTR_V4_REFERRAL
;
6347 fattr
->mode
= S_IFDIR
| S_IRUGO
| S_IXUGO
;
6351 static int _nfs4_proc_fs_locations(struct rpc_clnt
*client
, struct inode
*dir
,
6352 const struct qstr
*name
,
6353 struct nfs4_fs_locations
*fs_locations
,
6356 struct nfs_server
*server
= NFS_SERVER(dir
);
6358 [0] = FATTR4_WORD0_FSID
| FATTR4_WORD0_FS_LOCATIONS
,
6360 struct nfs4_fs_locations_arg args
= {
6361 .dir_fh
= NFS_FH(dir
),
6366 struct nfs4_fs_locations_res res
= {
6367 .fs_locations
= fs_locations
,
6369 struct rpc_message msg
= {
6370 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FS_LOCATIONS
],
6376 dprintk("%s: start\n", __func__
);
6378 /* Ask for the fileid of the absent filesystem if mounted_on_fileid
6379 * is not supported */
6380 if (NFS_SERVER(dir
)->attr_bitmask
[1] & FATTR4_WORD1_MOUNTED_ON_FILEID
)
6381 bitmask
[1] |= FATTR4_WORD1_MOUNTED_ON_FILEID
;
6383 bitmask
[0] |= FATTR4_WORD0_FILEID
;
6385 nfs_fattr_init(&fs_locations
->fattr
);
6386 fs_locations
->server
= server
;
6387 fs_locations
->nlocations
= 0;
6388 status
= nfs4_call_sync(client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
6389 dprintk("%s: returned status = %d\n", __func__
, status
);
6393 int nfs4_proc_fs_locations(struct rpc_clnt
*client
, struct inode
*dir
,
6394 const struct qstr
*name
,
6395 struct nfs4_fs_locations
*fs_locations
,
6398 struct nfs4_exception exception
= { };
6401 err
= _nfs4_proc_fs_locations(client
, dir
, name
,
6402 fs_locations
, page
);
6403 trace_nfs4_get_fs_locations(dir
, name
, err
);
6404 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
6406 } while (exception
.retry
);
6411 * This operation also signals the server that this client is
6412 * performing migration recovery. The server can stop returning
6413 * NFS4ERR_LEASE_MOVED to this client. A RENEW operation is
6414 * appended to this compound to identify the client ID which is
6415 * performing recovery.
6417 static int _nfs40_proc_get_locations(struct inode
*inode
,
6418 struct nfs4_fs_locations
*locations
,
6419 struct page
*page
, struct rpc_cred
*cred
)
6421 struct nfs_server
*server
= NFS_SERVER(inode
);
6422 struct rpc_clnt
*clnt
= server
->client
;
6424 [0] = FATTR4_WORD0_FSID
| FATTR4_WORD0_FS_LOCATIONS
,
6426 struct nfs4_fs_locations_arg args
= {
6427 .clientid
= server
->nfs_client
->cl_clientid
,
6428 .fh
= NFS_FH(inode
),
6431 .migration
= 1, /* skip LOOKUP */
6432 .renew
= 1, /* append RENEW */
6434 struct nfs4_fs_locations_res res
= {
6435 .fs_locations
= locations
,
6439 struct rpc_message msg
= {
6440 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FS_LOCATIONS
],
6445 unsigned long now
= jiffies
;
6448 nfs_fattr_init(&locations
->fattr
);
6449 locations
->server
= server
;
6450 locations
->nlocations
= 0;
6452 nfs4_init_sequence(&args
.seq_args
, &res
.seq_res
, 0);
6453 nfs4_set_sequence_privileged(&args
.seq_args
);
6454 status
= nfs4_call_sync_sequence(clnt
, server
, &msg
,
6455 &args
.seq_args
, &res
.seq_res
);
6459 renew_lease(server
, now
);
6463 #ifdef CONFIG_NFS_V4_1
6466 * This operation also signals the server that this client is
6467 * performing migration recovery. The server can stop asserting
6468 * SEQ4_STATUS_LEASE_MOVED for this client. The client ID
6469 * performing this operation is identified in the SEQUENCE
6470 * operation in this compound.
6472 * When the client supports GETATTR(fs_locations_info), it can
6473 * be plumbed in here.
6475 static int _nfs41_proc_get_locations(struct inode
*inode
,
6476 struct nfs4_fs_locations
*locations
,
6477 struct page
*page
, struct rpc_cred
*cred
)
6479 struct nfs_server
*server
= NFS_SERVER(inode
);
6480 struct rpc_clnt
*clnt
= server
->client
;
6482 [0] = FATTR4_WORD0_FSID
| FATTR4_WORD0_FS_LOCATIONS
,
6484 struct nfs4_fs_locations_arg args
= {
6485 .fh
= NFS_FH(inode
),
6488 .migration
= 1, /* skip LOOKUP */
6490 struct nfs4_fs_locations_res res
= {
6491 .fs_locations
= locations
,
6494 struct rpc_message msg
= {
6495 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FS_LOCATIONS
],
6502 nfs_fattr_init(&locations
->fattr
);
6503 locations
->server
= server
;
6504 locations
->nlocations
= 0;
6506 nfs4_init_sequence(&args
.seq_args
, &res
.seq_res
, 0);
6507 nfs4_set_sequence_privileged(&args
.seq_args
);
6508 status
= nfs4_call_sync_sequence(clnt
, server
, &msg
,
6509 &args
.seq_args
, &res
.seq_res
);
6510 if (status
== NFS4_OK
&&
6511 res
.seq_res
.sr_status_flags
& SEQ4_STATUS_LEASE_MOVED
)
6512 status
= -NFS4ERR_LEASE_MOVED
;
6516 #endif /* CONFIG_NFS_V4_1 */
6519 * nfs4_proc_get_locations - discover locations for a migrated FSID
6520 * @inode: inode on FSID that is migrating
6521 * @locations: result of query
6523 * @cred: credential to use for this operation
6525 * Returns NFS4_OK on success, a negative NFS4ERR status code if the
6526 * operation failed, or a negative errno if a local error occurred.
6528 * On success, "locations" is filled in, but if the server has
6529 * no locations information, NFS_ATTR_FATTR_V4_LOCATIONS is not
6532 * -NFS4ERR_LEASE_MOVED is returned if the server still has leases
6533 * from this client that require migration recovery.
6535 int nfs4_proc_get_locations(struct inode
*inode
,
6536 struct nfs4_fs_locations
*locations
,
6537 struct page
*page
, struct rpc_cred
*cred
)
6539 struct nfs_server
*server
= NFS_SERVER(inode
);
6540 struct nfs_client
*clp
= server
->nfs_client
;
6541 const struct nfs4_mig_recovery_ops
*ops
=
6542 clp
->cl_mvops
->mig_recovery_ops
;
6543 struct nfs4_exception exception
= { };
6546 dprintk("%s: FSID %llx:%llx on \"%s\"\n", __func__
,
6547 (unsigned long long)server
->fsid
.major
,
6548 (unsigned long long)server
->fsid
.minor
,
6550 nfs_display_fhandle(NFS_FH(inode
), __func__
);
6553 status
= ops
->get_locations(inode
, locations
, page
, cred
);
6554 if (status
!= -NFS4ERR_DELAY
)
6556 nfs4_handle_exception(server
, status
, &exception
);
6557 } while (exception
.retry
);
6562 * This operation also signals the server that this client is
6563 * performing "lease moved" recovery. The server can stop
6564 * returning NFS4ERR_LEASE_MOVED to this client. A RENEW operation
6565 * is appended to this compound to identify the client ID which is
6566 * performing recovery.
6568 static int _nfs40_proc_fsid_present(struct inode
*inode
, struct rpc_cred
*cred
)
6570 struct nfs_server
*server
= NFS_SERVER(inode
);
6571 struct nfs_client
*clp
= NFS_SERVER(inode
)->nfs_client
;
6572 struct rpc_clnt
*clnt
= server
->client
;
6573 struct nfs4_fsid_present_arg args
= {
6574 .fh
= NFS_FH(inode
),
6575 .clientid
= clp
->cl_clientid
,
6576 .renew
= 1, /* append RENEW */
6578 struct nfs4_fsid_present_res res
= {
6581 struct rpc_message msg
= {
6582 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FSID_PRESENT
],
6587 unsigned long now
= jiffies
;
6590 res
.fh
= nfs_alloc_fhandle();
6594 nfs4_init_sequence(&args
.seq_args
, &res
.seq_res
, 0);
6595 nfs4_set_sequence_privileged(&args
.seq_args
);
6596 status
= nfs4_call_sync_sequence(clnt
, server
, &msg
,
6597 &args
.seq_args
, &res
.seq_res
);
6598 nfs_free_fhandle(res
.fh
);
6602 do_renew_lease(clp
, now
);
6606 #ifdef CONFIG_NFS_V4_1
6609 * This operation also signals the server that this client is
6610 * performing "lease moved" recovery. The server can stop asserting
6611 * SEQ4_STATUS_LEASE_MOVED for this client. The client ID performing
6612 * this operation is identified in the SEQUENCE operation in this
6615 static int _nfs41_proc_fsid_present(struct inode
*inode
, struct rpc_cred
*cred
)
6617 struct nfs_server
*server
= NFS_SERVER(inode
);
6618 struct rpc_clnt
*clnt
= server
->client
;
6619 struct nfs4_fsid_present_arg args
= {
6620 .fh
= NFS_FH(inode
),
6622 struct nfs4_fsid_present_res res
= {
6624 struct rpc_message msg
= {
6625 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FSID_PRESENT
],
6632 res
.fh
= nfs_alloc_fhandle();
6636 nfs4_init_sequence(&args
.seq_args
, &res
.seq_res
, 0);
6637 nfs4_set_sequence_privileged(&args
.seq_args
);
6638 status
= nfs4_call_sync_sequence(clnt
, server
, &msg
,
6639 &args
.seq_args
, &res
.seq_res
);
6640 nfs_free_fhandle(res
.fh
);
6641 if (status
== NFS4_OK
&&
6642 res
.seq_res
.sr_status_flags
& SEQ4_STATUS_LEASE_MOVED
)
6643 status
= -NFS4ERR_LEASE_MOVED
;
6647 #endif /* CONFIG_NFS_V4_1 */
6650 * nfs4_proc_fsid_present - Is this FSID present or absent on server?
6651 * @inode: inode on FSID to check
6652 * @cred: credential to use for this operation
6654 * Server indicates whether the FSID is present, moved, or not
6655 * recognized. This operation is necessary to clear a LEASE_MOVED
6656 * condition for this client ID.
6658 * Returns NFS4_OK if the FSID is present on this server,
6659 * -NFS4ERR_MOVED if the FSID is no longer present, a negative
6660 * NFS4ERR code if some error occurred on the server, or a
6661 * negative errno if a local failure occurred.
6663 int nfs4_proc_fsid_present(struct inode
*inode
, struct rpc_cred
*cred
)
6665 struct nfs_server
*server
= NFS_SERVER(inode
);
6666 struct nfs_client
*clp
= server
->nfs_client
;
6667 const struct nfs4_mig_recovery_ops
*ops
=
6668 clp
->cl_mvops
->mig_recovery_ops
;
6669 struct nfs4_exception exception
= { };
6672 dprintk("%s: FSID %llx:%llx on \"%s\"\n", __func__
,
6673 (unsigned long long)server
->fsid
.major
,
6674 (unsigned long long)server
->fsid
.minor
,
6676 nfs_display_fhandle(NFS_FH(inode
), __func__
);
6679 status
= ops
->fsid_present(inode
, cred
);
6680 if (status
!= -NFS4ERR_DELAY
)
6682 nfs4_handle_exception(server
, status
, &exception
);
6683 } while (exception
.retry
);
6688 * If 'use_integrity' is true and the state managment nfs_client
6689 * cl_rpcclient is using krb5i/p, use the integrity protected cl_rpcclient
6690 * and the machine credential as per RFC3530bis and RFC5661 Security
6691 * Considerations sections. Otherwise, just use the user cred with the
6692 * filesystem's rpc_client.
6694 static int _nfs4_proc_secinfo(struct inode
*dir
, const struct qstr
*name
, struct nfs4_secinfo_flavors
*flavors
, bool use_integrity
)
6697 struct nfs4_secinfo_arg args
= {
6698 .dir_fh
= NFS_FH(dir
),
6701 struct nfs4_secinfo_res res
= {
6704 struct rpc_message msg
= {
6705 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SECINFO
],
6709 struct rpc_clnt
*clnt
= NFS_SERVER(dir
)->client
;
6710 struct rpc_cred
*cred
= NULL
;
6712 if (use_integrity
) {
6713 clnt
= NFS_SERVER(dir
)->nfs_client
->cl_rpcclient
;
6714 cred
= nfs4_get_clid_cred(NFS_SERVER(dir
)->nfs_client
);
6715 msg
.rpc_cred
= cred
;
6718 dprintk("NFS call secinfo %s\n", name
->name
);
6720 nfs4_state_protect(NFS_SERVER(dir
)->nfs_client
,
6721 NFS_SP4_MACH_CRED_SECINFO
, &clnt
, &msg
);
6723 status
= nfs4_call_sync(clnt
, NFS_SERVER(dir
), &msg
, &args
.seq_args
,
6725 dprintk("NFS reply secinfo: %d\n", status
);
6733 int nfs4_proc_secinfo(struct inode
*dir
, const struct qstr
*name
,
6734 struct nfs4_secinfo_flavors
*flavors
)
6736 struct nfs4_exception exception
= { };
6739 err
= -NFS4ERR_WRONGSEC
;
6741 /* try to use integrity protection with machine cred */
6742 if (_nfs4_is_integrity_protected(NFS_SERVER(dir
)->nfs_client
))
6743 err
= _nfs4_proc_secinfo(dir
, name
, flavors
, true);
6746 * if unable to use integrity protection, or SECINFO with
6747 * integrity protection returns NFS4ERR_WRONGSEC (which is
6748 * disallowed by spec, but exists in deployed servers) use
6749 * the current filesystem's rpc_client and the user cred.
6751 if (err
== -NFS4ERR_WRONGSEC
)
6752 err
= _nfs4_proc_secinfo(dir
, name
, flavors
, false);
6754 trace_nfs4_secinfo(dir
, name
, err
);
6755 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
6757 } while (exception
.retry
);
6761 #ifdef CONFIG_NFS_V4_1
6763 * Check the exchange flags returned by the server for invalid flags, having
6764 * both PNFS and NON_PNFS flags set, and not having one of NON_PNFS, PNFS, or
6767 static int nfs4_check_cl_exchange_flags(u32 flags
)
6769 if (flags
& ~EXCHGID4_FLAG_MASK_R
)
6771 if ((flags
& EXCHGID4_FLAG_USE_PNFS_MDS
) &&
6772 (flags
& EXCHGID4_FLAG_USE_NON_PNFS
))
6774 if (!(flags
& (EXCHGID4_FLAG_MASK_PNFS
)))
6778 return -NFS4ERR_INVAL
;
6782 nfs41_same_server_scope(struct nfs41_server_scope
*a
,
6783 struct nfs41_server_scope
*b
)
6785 if (a
->server_scope_sz
== b
->server_scope_sz
&&
6786 memcmp(a
->server_scope
, b
->server_scope
, a
->server_scope_sz
) == 0)
6793 * nfs4_proc_bind_conn_to_session()
6795 * The 4.1 client currently uses the same TCP connection for the
6796 * fore and backchannel.
6798 int nfs4_proc_bind_conn_to_session(struct nfs_client
*clp
, struct rpc_cred
*cred
)
6801 struct nfs41_bind_conn_to_session_args args
= {
6803 .dir
= NFS4_CDFC4_FORE_OR_BOTH
,
6805 struct nfs41_bind_conn_to_session_res res
;
6806 struct rpc_message msg
= {
6808 &nfs4_procedures
[NFSPROC4_CLNT_BIND_CONN_TO_SESSION
],
6814 dprintk("--> %s\n", __func__
);
6816 nfs4_copy_sessionid(&args
.sessionid
, &clp
->cl_session
->sess_id
);
6817 if (!(clp
->cl_session
->flags
& SESSION4_BACK_CHAN
))
6818 args
.dir
= NFS4_CDFC4_FORE
;
6820 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
6821 trace_nfs4_bind_conn_to_session(clp
, status
);
6823 if (memcmp(res
.sessionid
.data
,
6824 clp
->cl_session
->sess_id
.data
, NFS4_MAX_SESSIONID_LEN
)) {
6825 dprintk("NFS: %s: Session ID mismatch\n", __func__
);
6829 if ((res
.dir
& args
.dir
) != res
.dir
|| res
.dir
== 0) {
6830 dprintk("NFS: %s: Unexpected direction from server\n",
6835 if (res
.use_conn_in_rdma_mode
!= args
.use_conn_in_rdma_mode
) {
6836 dprintk("NFS: %s: Server returned RDMA mode = true\n",
6843 dprintk("<-- %s status= %d\n", __func__
, status
);
6848 * Minimum set of SP4_MACH_CRED operations from RFC 5661 in the enforce map
6849 * and operations we'd like to see to enable certain features in the allow map
6851 static const struct nfs41_state_protection nfs4_sp4_mach_cred_request
= {
6852 .how
= SP4_MACH_CRED
,
6853 .enforce
.u
.words
= {
6854 [1] = 1 << (OP_BIND_CONN_TO_SESSION
- 32) |
6855 1 << (OP_EXCHANGE_ID
- 32) |
6856 1 << (OP_CREATE_SESSION
- 32) |
6857 1 << (OP_DESTROY_SESSION
- 32) |
6858 1 << (OP_DESTROY_CLIENTID
- 32)
6861 [0] = 1 << (OP_CLOSE
) |
6864 [1] = 1 << (OP_SECINFO
- 32) |
6865 1 << (OP_SECINFO_NO_NAME
- 32) |
6866 1 << (OP_TEST_STATEID
- 32) |
6867 1 << (OP_FREE_STATEID
- 32) |
6868 1 << (OP_WRITE
- 32)
6873 * Select the state protection mode for client `clp' given the server results
6874 * from exchange_id in `sp'.
6876 * Returns 0 on success, negative errno otherwise.
6878 static int nfs4_sp4_select_mode(struct nfs_client
*clp
,
6879 struct nfs41_state_protection
*sp
)
6881 static const u32 supported_enforce
[NFS4_OP_MAP_NUM_WORDS
] = {
6882 [1] = 1 << (OP_BIND_CONN_TO_SESSION
- 32) |
6883 1 << (OP_EXCHANGE_ID
- 32) |
6884 1 << (OP_CREATE_SESSION
- 32) |
6885 1 << (OP_DESTROY_SESSION
- 32) |
6886 1 << (OP_DESTROY_CLIENTID
- 32)
6890 if (sp
->how
== SP4_MACH_CRED
) {
6891 /* Print state protect result */
6892 dfprintk(MOUNT
, "Server SP4_MACH_CRED support:\n");
6893 for (i
= 0; i
<= LAST_NFS4_OP
; i
++) {
6894 if (test_bit(i
, sp
->enforce
.u
.longs
))
6895 dfprintk(MOUNT
, " enforce op %d\n", i
);
6896 if (test_bit(i
, sp
->allow
.u
.longs
))
6897 dfprintk(MOUNT
, " allow op %d\n", i
);
6900 /* make sure nothing is on enforce list that isn't supported */
6901 for (i
= 0; i
< NFS4_OP_MAP_NUM_WORDS
; i
++) {
6902 if (sp
->enforce
.u
.words
[i
] & ~supported_enforce
[i
]) {
6903 dfprintk(MOUNT
, "sp4_mach_cred: disabled\n");
6909 * Minimal mode - state operations are allowed to use machine
6910 * credential. Note this already happens by default, so the
6911 * client doesn't have to do anything more than the negotiation.
6913 * NOTE: we don't care if EXCHANGE_ID is in the list -
6914 * we're already using the machine cred for exchange_id
6915 * and will never use a different cred.
6917 if (test_bit(OP_BIND_CONN_TO_SESSION
, sp
->enforce
.u
.longs
) &&
6918 test_bit(OP_CREATE_SESSION
, sp
->enforce
.u
.longs
) &&
6919 test_bit(OP_DESTROY_SESSION
, sp
->enforce
.u
.longs
) &&
6920 test_bit(OP_DESTROY_CLIENTID
, sp
->enforce
.u
.longs
)) {
6921 dfprintk(MOUNT
, "sp4_mach_cred:\n");
6922 dfprintk(MOUNT
, " minimal mode enabled\n");
6923 set_bit(NFS_SP4_MACH_CRED_MINIMAL
, &clp
->cl_sp4_flags
);
6925 dfprintk(MOUNT
, "sp4_mach_cred: disabled\n");
6929 if (test_bit(OP_CLOSE
, sp
->allow
.u
.longs
) &&
6930 test_bit(OP_LOCKU
, sp
->allow
.u
.longs
)) {
6931 dfprintk(MOUNT
, " cleanup mode enabled\n");
6932 set_bit(NFS_SP4_MACH_CRED_CLEANUP
, &clp
->cl_sp4_flags
);
6935 if (test_bit(OP_SECINFO
, sp
->allow
.u
.longs
) &&
6936 test_bit(OP_SECINFO_NO_NAME
, sp
->allow
.u
.longs
)) {
6937 dfprintk(MOUNT
, " secinfo mode enabled\n");
6938 set_bit(NFS_SP4_MACH_CRED_SECINFO
, &clp
->cl_sp4_flags
);
6941 if (test_bit(OP_TEST_STATEID
, sp
->allow
.u
.longs
) &&
6942 test_bit(OP_FREE_STATEID
, sp
->allow
.u
.longs
)) {
6943 dfprintk(MOUNT
, " stateid mode enabled\n");
6944 set_bit(NFS_SP4_MACH_CRED_STATEID
, &clp
->cl_sp4_flags
);
6947 if (test_bit(OP_WRITE
, sp
->allow
.u
.longs
)) {
6948 dfprintk(MOUNT
, " write mode enabled\n");
6949 set_bit(NFS_SP4_MACH_CRED_WRITE
, &clp
->cl_sp4_flags
);
6952 if (test_bit(OP_COMMIT
, sp
->allow
.u
.longs
)) {
6953 dfprintk(MOUNT
, " commit mode enabled\n");
6954 set_bit(NFS_SP4_MACH_CRED_COMMIT
, &clp
->cl_sp4_flags
);
6962 * _nfs4_proc_exchange_id()
6964 * Wrapper for EXCHANGE_ID operation.
6966 static int _nfs4_proc_exchange_id(struct nfs_client
*clp
, struct rpc_cred
*cred
,
6969 nfs4_verifier verifier
;
6970 struct nfs41_exchange_id_args args
= {
6971 .verifier
= &verifier
,
6973 #ifdef CONFIG_NFS_V4_1_MIGRATION
6974 .flags
= EXCHGID4_FLAG_SUPP_MOVED_REFER
|
6975 EXCHGID4_FLAG_BIND_PRINC_STATEID
|
6976 EXCHGID4_FLAG_SUPP_MOVED_MIGR
,
6978 .flags
= EXCHGID4_FLAG_SUPP_MOVED_REFER
|
6979 EXCHGID4_FLAG_BIND_PRINC_STATEID
,
6982 struct nfs41_exchange_id_res res
= {
6986 struct rpc_message msg
= {
6987 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_EXCHANGE_ID
],
6993 nfs4_init_boot_verifier(clp
, &verifier
);
6995 status
= nfs4_init_uniform_client_string(clp
);
6999 dprintk("NFS call exchange_id auth=%s, '%s'\n",
7000 clp
->cl_rpcclient
->cl_auth
->au_ops
->au_name
,
7003 res
.server_owner
= kzalloc(sizeof(struct nfs41_server_owner
),
7005 if (unlikely(res
.server_owner
== NULL
)) {
7010 res
.server_scope
= kzalloc(sizeof(struct nfs41_server_scope
),
7012 if (unlikely(res
.server_scope
== NULL
)) {
7014 goto out_server_owner
;
7017 res
.impl_id
= kzalloc(sizeof(struct nfs41_impl_id
), GFP_NOFS
);
7018 if (unlikely(res
.impl_id
== NULL
)) {
7020 goto out_server_scope
;
7025 args
.state_protect
.how
= SP4_NONE
;
7029 args
.state_protect
= nfs4_sp4_mach_cred_request
;
7039 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
7040 trace_nfs4_exchange_id(clp
, status
);
7042 status
= nfs4_check_cl_exchange_flags(res
.flags
);
7045 status
= nfs4_sp4_select_mode(clp
, &res
.state_protect
);
7048 clp
->cl_clientid
= res
.clientid
;
7049 clp
->cl_exchange_flags
= res
.flags
;
7050 /* Client ID is not confirmed */
7051 if (!(res
.flags
& EXCHGID4_FLAG_CONFIRMED_R
)) {
7052 clear_bit(NFS4_SESSION_ESTABLISHED
,
7053 &clp
->cl_session
->session_state
);
7054 clp
->cl_seqid
= res
.seqid
;
7057 kfree(clp
->cl_serverowner
);
7058 clp
->cl_serverowner
= res
.server_owner
;
7059 res
.server_owner
= NULL
;
7061 /* use the most recent implementation id */
7062 kfree(clp
->cl_implid
);
7063 clp
->cl_implid
= res
.impl_id
;
7066 if (clp
->cl_serverscope
!= NULL
&&
7067 !nfs41_same_server_scope(clp
->cl_serverscope
,
7068 res
.server_scope
)) {
7069 dprintk("%s: server_scope mismatch detected\n",
7071 set_bit(NFS4CLNT_SERVER_SCOPE_MISMATCH
, &clp
->cl_state
);
7072 kfree(clp
->cl_serverscope
);
7073 clp
->cl_serverscope
= NULL
;
7076 if (clp
->cl_serverscope
== NULL
) {
7077 clp
->cl_serverscope
= res
.server_scope
;
7078 res
.server_scope
= NULL
;
7085 kfree(res
.server_scope
);
7087 kfree(res
.server_owner
);
7089 if (clp
->cl_implid
!= NULL
)
7090 dprintk("NFS reply exchange_id: Server Implementation ID: "
7091 "domain: %s, name: %s, date: %llu,%u\n",
7092 clp
->cl_implid
->domain
, clp
->cl_implid
->name
,
7093 clp
->cl_implid
->date
.seconds
,
7094 clp
->cl_implid
->date
.nseconds
);
7095 dprintk("NFS reply exchange_id: %d\n", status
);
7100 * nfs4_proc_exchange_id()
7102 * Returns zero, a negative errno, or a negative NFS4ERR status code.
7104 * Since the clientid has expired, all compounds using sessions
7105 * associated with the stale clientid will be returning
7106 * NFS4ERR_BADSESSION in the sequence operation, and will therefore
7107 * be in some phase of session reset.
7109 * Will attempt to negotiate SP4_MACH_CRED if krb5i / krb5p auth is used.
7111 int nfs4_proc_exchange_id(struct nfs_client
*clp
, struct rpc_cred
*cred
)
7113 rpc_authflavor_t authflavor
= clp
->cl_rpcclient
->cl_auth
->au_flavor
;
7116 /* try SP4_MACH_CRED if krb5i/p */
7117 if (authflavor
== RPC_AUTH_GSS_KRB5I
||
7118 authflavor
== RPC_AUTH_GSS_KRB5P
) {
7119 status
= _nfs4_proc_exchange_id(clp
, cred
, SP4_MACH_CRED
);
7125 return _nfs4_proc_exchange_id(clp
, cred
, SP4_NONE
);
7128 static int _nfs4_proc_destroy_clientid(struct nfs_client
*clp
,
7129 struct rpc_cred
*cred
)
7131 struct rpc_message msg
= {
7132 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DESTROY_CLIENTID
],
7138 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
7139 trace_nfs4_destroy_clientid(clp
, status
);
7141 dprintk("NFS: Got error %d from the server %s on "
7142 "DESTROY_CLIENTID.", status
, clp
->cl_hostname
);
7146 static int nfs4_proc_destroy_clientid(struct nfs_client
*clp
,
7147 struct rpc_cred
*cred
)
7152 for (loop
= NFS4_MAX_LOOP_ON_RECOVER
; loop
!= 0; loop
--) {
7153 ret
= _nfs4_proc_destroy_clientid(clp
, cred
);
7155 case -NFS4ERR_DELAY
:
7156 case -NFS4ERR_CLIENTID_BUSY
:
7166 int nfs4_destroy_clientid(struct nfs_client
*clp
)
7168 struct rpc_cred
*cred
;
7171 if (clp
->cl_mvops
->minor_version
< 1)
7173 if (clp
->cl_exchange_flags
== 0)
7175 if (clp
->cl_preserve_clid
)
7177 cred
= nfs4_get_clid_cred(clp
);
7178 ret
= nfs4_proc_destroy_clientid(clp
, cred
);
7183 case -NFS4ERR_STALE_CLIENTID
:
7184 clp
->cl_exchange_flags
= 0;
7190 struct nfs4_get_lease_time_data
{
7191 struct nfs4_get_lease_time_args
*args
;
7192 struct nfs4_get_lease_time_res
*res
;
7193 struct nfs_client
*clp
;
7196 static void nfs4_get_lease_time_prepare(struct rpc_task
*task
,
7199 struct nfs4_get_lease_time_data
*data
=
7200 (struct nfs4_get_lease_time_data
*)calldata
;
7202 dprintk("--> %s\n", __func__
);
7203 /* just setup sequence, do not trigger session recovery
7204 since we're invoked within one */
7205 nfs41_setup_sequence(data
->clp
->cl_session
,
7206 &data
->args
->la_seq_args
,
7207 &data
->res
->lr_seq_res
,
7209 dprintk("<-- %s\n", __func__
);
7213 * Called from nfs4_state_manager thread for session setup, so don't recover
7214 * from sequence operation or clientid errors.
7216 static void nfs4_get_lease_time_done(struct rpc_task
*task
, void *calldata
)
7218 struct nfs4_get_lease_time_data
*data
=
7219 (struct nfs4_get_lease_time_data
*)calldata
;
7221 dprintk("--> %s\n", __func__
);
7222 if (!nfs41_sequence_done(task
, &data
->res
->lr_seq_res
))
7224 switch (task
->tk_status
) {
7225 case -NFS4ERR_DELAY
:
7226 case -NFS4ERR_GRACE
:
7227 dprintk("%s Retry: tk_status %d\n", __func__
, task
->tk_status
);
7228 rpc_delay(task
, NFS4_POLL_RETRY_MIN
);
7229 task
->tk_status
= 0;
7231 case -NFS4ERR_RETRY_UNCACHED_REP
:
7232 rpc_restart_call_prepare(task
);
7235 dprintk("<-- %s\n", __func__
);
7238 static const struct rpc_call_ops nfs4_get_lease_time_ops
= {
7239 .rpc_call_prepare
= nfs4_get_lease_time_prepare
,
7240 .rpc_call_done
= nfs4_get_lease_time_done
,
7243 int nfs4_proc_get_lease_time(struct nfs_client
*clp
, struct nfs_fsinfo
*fsinfo
)
7245 struct rpc_task
*task
;
7246 struct nfs4_get_lease_time_args args
;
7247 struct nfs4_get_lease_time_res res
= {
7248 .lr_fsinfo
= fsinfo
,
7250 struct nfs4_get_lease_time_data data
= {
7255 struct rpc_message msg
= {
7256 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GET_LEASE_TIME
],
7260 struct rpc_task_setup task_setup
= {
7261 .rpc_client
= clp
->cl_rpcclient
,
7262 .rpc_message
= &msg
,
7263 .callback_ops
= &nfs4_get_lease_time_ops
,
7264 .callback_data
= &data
,
7265 .flags
= RPC_TASK_TIMEOUT
,
7269 nfs4_init_sequence(&args
.la_seq_args
, &res
.lr_seq_res
, 0);
7270 nfs4_set_sequence_privileged(&args
.la_seq_args
);
7271 dprintk("--> %s\n", __func__
);
7272 task
= rpc_run_task(&task_setup
);
7275 status
= PTR_ERR(task
);
7277 status
= task
->tk_status
;
7280 dprintk("<-- %s return %d\n", __func__
, status
);
7286 * Initialize the values to be used by the client in CREATE_SESSION
7287 * If nfs4_init_session set the fore channel request and response sizes,
7290 * Set the back channel max_resp_sz_cached to zero to force the client to
7291 * always set csa_cachethis to FALSE because the current implementation
7292 * of the back channel DRC only supports caching the CB_SEQUENCE operation.
7294 static void nfs4_init_channel_attrs(struct nfs41_create_session_args
*args
)
7296 unsigned int max_rqst_sz
, max_resp_sz
;
7298 max_rqst_sz
= NFS_MAX_FILE_IO_SIZE
+ nfs41_maxwrite_overhead
;
7299 max_resp_sz
= NFS_MAX_FILE_IO_SIZE
+ nfs41_maxread_overhead
;
7301 /* Fore channel attributes */
7302 args
->fc_attrs
.max_rqst_sz
= max_rqst_sz
;
7303 args
->fc_attrs
.max_resp_sz
= max_resp_sz
;
7304 args
->fc_attrs
.max_ops
= NFS4_MAX_OPS
;
7305 args
->fc_attrs
.max_reqs
= max_session_slots
;
7307 dprintk("%s: Fore Channel : max_rqst_sz=%u max_resp_sz=%u "
7308 "max_ops=%u max_reqs=%u\n",
7310 args
->fc_attrs
.max_rqst_sz
, args
->fc_attrs
.max_resp_sz
,
7311 args
->fc_attrs
.max_ops
, args
->fc_attrs
.max_reqs
);
7313 /* Back channel attributes */
7314 args
->bc_attrs
.max_rqst_sz
= PAGE_SIZE
;
7315 args
->bc_attrs
.max_resp_sz
= PAGE_SIZE
;
7316 args
->bc_attrs
.max_resp_sz_cached
= 0;
7317 args
->bc_attrs
.max_ops
= NFS4_MAX_BACK_CHANNEL_OPS
;
7318 args
->bc_attrs
.max_reqs
= 1;
7320 dprintk("%s: Back Channel : max_rqst_sz=%u max_resp_sz=%u "
7321 "max_resp_sz_cached=%u max_ops=%u max_reqs=%u\n",
7323 args
->bc_attrs
.max_rqst_sz
, args
->bc_attrs
.max_resp_sz
,
7324 args
->bc_attrs
.max_resp_sz_cached
, args
->bc_attrs
.max_ops
,
7325 args
->bc_attrs
.max_reqs
);
7328 static int nfs4_verify_fore_channel_attrs(struct nfs41_create_session_args
*args
,
7329 struct nfs41_create_session_res
*res
)
7331 struct nfs4_channel_attrs
*sent
= &args
->fc_attrs
;
7332 struct nfs4_channel_attrs
*rcvd
= &res
->fc_attrs
;
7334 if (rcvd
->max_resp_sz
> sent
->max_resp_sz
)
7337 * Our requested max_ops is the minimum we need; we're not
7338 * prepared to break up compounds into smaller pieces than that.
7339 * So, no point even trying to continue if the server won't
7342 if (rcvd
->max_ops
< sent
->max_ops
)
7344 if (rcvd
->max_reqs
== 0)
7346 if (rcvd
->max_reqs
> NFS4_MAX_SLOT_TABLE
)
7347 rcvd
->max_reqs
= NFS4_MAX_SLOT_TABLE
;
7351 static int nfs4_verify_back_channel_attrs(struct nfs41_create_session_args
*args
,
7352 struct nfs41_create_session_res
*res
)
7354 struct nfs4_channel_attrs
*sent
= &args
->bc_attrs
;
7355 struct nfs4_channel_attrs
*rcvd
= &res
->bc_attrs
;
7357 if (!(res
->flags
& SESSION4_BACK_CHAN
))
7359 if (rcvd
->max_rqst_sz
> sent
->max_rqst_sz
)
7361 if (rcvd
->max_resp_sz
< sent
->max_resp_sz
)
7363 if (rcvd
->max_resp_sz_cached
> sent
->max_resp_sz_cached
)
7365 /* These would render the backchannel useless: */
7366 if (rcvd
->max_ops
!= sent
->max_ops
)
7368 if (rcvd
->max_reqs
!= sent
->max_reqs
)
7374 static int nfs4_verify_channel_attrs(struct nfs41_create_session_args
*args
,
7375 struct nfs41_create_session_res
*res
)
7379 ret
= nfs4_verify_fore_channel_attrs(args
, res
);
7382 return nfs4_verify_back_channel_attrs(args
, res
);
7385 static void nfs4_update_session(struct nfs4_session
*session
,
7386 struct nfs41_create_session_res
*res
)
7388 nfs4_copy_sessionid(&session
->sess_id
, &res
->sessionid
);
7389 /* Mark client id and session as being confirmed */
7390 session
->clp
->cl_exchange_flags
|= EXCHGID4_FLAG_CONFIRMED_R
;
7391 set_bit(NFS4_SESSION_ESTABLISHED
, &session
->session_state
);
7392 session
->flags
= res
->flags
;
7393 memcpy(&session
->fc_attrs
, &res
->fc_attrs
, sizeof(session
->fc_attrs
));
7394 if (res
->flags
& SESSION4_BACK_CHAN
)
7395 memcpy(&session
->bc_attrs
, &res
->bc_attrs
,
7396 sizeof(session
->bc_attrs
));
7399 static int _nfs4_proc_create_session(struct nfs_client
*clp
,
7400 struct rpc_cred
*cred
)
7402 struct nfs4_session
*session
= clp
->cl_session
;
7403 struct nfs41_create_session_args args
= {
7405 .clientid
= clp
->cl_clientid
,
7406 .seqid
= clp
->cl_seqid
,
7407 .cb_program
= NFS4_CALLBACK
,
7409 struct nfs41_create_session_res res
;
7411 struct rpc_message msg
= {
7412 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CREATE_SESSION
],
7419 nfs4_init_channel_attrs(&args
);
7420 args
.flags
= (SESSION4_PERSIST
| SESSION4_BACK_CHAN
);
7422 status
= rpc_call_sync(session
->clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
7423 trace_nfs4_create_session(clp
, status
);
7426 /* Verify the session's negotiated channel_attrs values */
7427 status
= nfs4_verify_channel_attrs(&args
, &res
);
7428 /* Increment the clientid slot sequence id */
7429 if (clp
->cl_seqid
== res
.seqid
)
7433 nfs4_update_session(session
, &res
);
7440 * Issues a CREATE_SESSION operation to the server.
7441 * It is the responsibility of the caller to verify the session is
7442 * expired before calling this routine.
7444 int nfs4_proc_create_session(struct nfs_client
*clp
, struct rpc_cred
*cred
)
7448 struct nfs4_session
*session
= clp
->cl_session
;
7450 dprintk("--> %s clp=%p session=%p\n", __func__
, clp
, session
);
7452 status
= _nfs4_proc_create_session(clp
, cred
);
7456 /* Init or reset the session slot tables */
7457 status
= nfs4_setup_session_slot_tables(session
);
7458 dprintk("slot table setup returned %d\n", status
);
7462 ptr
= (unsigned *)&session
->sess_id
.data
[0];
7463 dprintk("%s client>seqid %d sessionid %u:%u:%u:%u\n", __func__
,
7464 clp
->cl_seqid
, ptr
[0], ptr
[1], ptr
[2], ptr
[3]);
7466 dprintk("<-- %s\n", __func__
);
7471 * Issue the over-the-wire RPC DESTROY_SESSION.
7472 * The caller must serialize access to this routine.
7474 int nfs4_proc_destroy_session(struct nfs4_session
*session
,
7475 struct rpc_cred
*cred
)
7477 struct rpc_message msg
= {
7478 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DESTROY_SESSION
],
7479 .rpc_argp
= session
,
7484 dprintk("--> nfs4_proc_destroy_session\n");
7486 /* session is still being setup */
7487 if (!test_and_clear_bit(NFS4_SESSION_ESTABLISHED
, &session
->session_state
))
7490 status
= rpc_call_sync(session
->clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
7491 trace_nfs4_destroy_session(session
->clp
, status
);
7494 dprintk("NFS: Got error %d from the server on DESTROY_SESSION. "
7495 "Session has been destroyed regardless...\n", status
);
7497 dprintk("<-- nfs4_proc_destroy_session\n");
7502 * Renew the cl_session lease.
7504 struct nfs4_sequence_data
{
7505 struct nfs_client
*clp
;
7506 struct nfs4_sequence_args args
;
7507 struct nfs4_sequence_res res
;
7510 static void nfs41_sequence_release(void *data
)
7512 struct nfs4_sequence_data
*calldata
= data
;
7513 struct nfs_client
*clp
= calldata
->clp
;
7515 if (atomic_read(&clp
->cl_count
) > 1)
7516 nfs4_schedule_state_renewal(clp
);
7517 nfs_put_client(clp
);
7521 static int nfs41_sequence_handle_errors(struct rpc_task
*task
, struct nfs_client
*clp
)
7523 switch(task
->tk_status
) {
7524 case -NFS4ERR_DELAY
:
7525 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
7528 nfs4_schedule_lease_recovery(clp
);
7533 static void nfs41_sequence_call_done(struct rpc_task
*task
, void *data
)
7535 struct nfs4_sequence_data
*calldata
= data
;
7536 struct nfs_client
*clp
= calldata
->clp
;
7538 if (!nfs41_sequence_done(task
, task
->tk_msg
.rpc_resp
))
7541 trace_nfs4_sequence(clp
, task
->tk_status
);
7542 if (task
->tk_status
< 0) {
7543 dprintk("%s ERROR %d\n", __func__
, task
->tk_status
);
7544 if (atomic_read(&clp
->cl_count
) == 1)
7547 if (nfs41_sequence_handle_errors(task
, clp
) == -EAGAIN
) {
7548 rpc_restart_call_prepare(task
);
7552 dprintk("%s rpc_cred %p\n", __func__
, task
->tk_msg
.rpc_cred
);
7554 dprintk("<-- %s\n", __func__
);
7557 static void nfs41_sequence_prepare(struct rpc_task
*task
, void *data
)
7559 struct nfs4_sequence_data
*calldata
= data
;
7560 struct nfs_client
*clp
= calldata
->clp
;
7561 struct nfs4_sequence_args
*args
;
7562 struct nfs4_sequence_res
*res
;
7564 args
= task
->tk_msg
.rpc_argp
;
7565 res
= task
->tk_msg
.rpc_resp
;
7567 nfs41_setup_sequence(clp
->cl_session
, args
, res
, task
);
7570 static const struct rpc_call_ops nfs41_sequence_ops
= {
7571 .rpc_call_done
= nfs41_sequence_call_done
,
7572 .rpc_call_prepare
= nfs41_sequence_prepare
,
7573 .rpc_release
= nfs41_sequence_release
,
7576 static struct rpc_task
*_nfs41_proc_sequence(struct nfs_client
*clp
,
7577 struct rpc_cred
*cred
,
7580 struct nfs4_sequence_data
*calldata
;
7581 struct rpc_message msg
= {
7582 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SEQUENCE
],
7585 struct rpc_task_setup task_setup_data
= {
7586 .rpc_client
= clp
->cl_rpcclient
,
7587 .rpc_message
= &msg
,
7588 .callback_ops
= &nfs41_sequence_ops
,
7589 .flags
= RPC_TASK_ASYNC
| RPC_TASK_TIMEOUT
,
7592 if (!atomic_inc_not_zero(&clp
->cl_count
))
7593 return ERR_PTR(-EIO
);
7594 calldata
= kzalloc(sizeof(*calldata
), GFP_NOFS
);
7595 if (calldata
== NULL
) {
7596 nfs_put_client(clp
);
7597 return ERR_PTR(-ENOMEM
);
7599 nfs4_init_sequence(&calldata
->args
, &calldata
->res
, 0);
7601 nfs4_set_sequence_privileged(&calldata
->args
);
7602 msg
.rpc_argp
= &calldata
->args
;
7603 msg
.rpc_resp
= &calldata
->res
;
7604 calldata
->clp
= clp
;
7605 task_setup_data
.callback_data
= calldata
;
7607 return rpc_run_task(&task_setup_data
);
7610 static int nfs41_proc_async_sequence(struct nfs_client
*clp
, struct rpc_cred
*cred
, unsigned renew_flags
)
7612 struct rpc_task
*task
;
7615 if ((renew_flags
& NFS4_RENEW_TIMEOUT
) == 0)
7617 task
= _nfs41_proc_sequence(clp
, cred
, false);
7619 ret
= PTR_ERR(task
);
7621 rpc_put_task_async(task
);
7622 dprintk("<-- %s status=%d\n", __func__
, ret
);
7626 static int nfs4_proc_sequence(struct nfs_client
*clp
, struct rpc_cred
*cred
)
7628 struct rpc_task
*task
;
7631 task
= _nfs41_proc_sequence(clp
, cred
, true);
7633 ret
= PTR_ERR(task
);
7636 ret
= rpc_wait_for_completion_task(task
);
7638 ret
= task
->tk_status
;
7641 dprintk("<-- %s status=%d\n", __func__
, ret
);
7645 struct nfs4_reclaim_complete_data
{
7646 struct nfs_client
*clp
;
7647 struct nfs41_reclaim_complete_args arg
;
7648 struct nfs41_reclaim_complete_res res
;
7651 static void nfs4_reclaim_complete_prepare(struct rpc_task
*task
, void *data
)
7653 struct nfs4_reclaim_complete_data
*calldata
= data
;
7655 nfs41_setup_sequence(calldata
->clp
->cl_session
,
7656 &calldata
->arg
.seq_args
,
7657 &calldata
->res
.seq_res
,
7661 static int nfs41_reclaim_complete_handle_errors(struct rpc_task
*task
, struct nfs_client
*clp
)
7663 switch(task
->tk_status
) {
7665 case -NFS4ERR_COMPLETE_ALREADY
:
7666 case -NFS4ERR_WRONG_CRED
: /* What to do here? */
7668 case -NFS4ERR_DELAY
:
7669 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
7671 case -NFS4ERR_RETRY_UNCACHED_REP
:
7674 nfs4_schedule_lease_recovery(clp
);
7679 static void nfs4_reclaim_complete_done(struct rpc_task
*task
, void *data
)
7681 struct nfs4_reclaim_complete_data
*calldata
= data
;
7682 struct nfs_client
*clp
= calldata
->clp
;
7683 struct nfs4_sequence_res
*res
= &calldata
->res
.seq_res
;
7685 dprintk("--> %s\n", __func__
);
7686 if (!nfs41_sequence_done(task
, res
))
7689 trace_nfs4_reclaim_complete(clp
, task
->tk_status
);
7690 if (nfs41_reclaim_complete_handle_errors(task
, clp
) == -EAGAIN
) {
7691 rpc_restart_call_prepare(task
);
7694 dprintk("<-- %s\n", __func__
);
7697 static void nfs4_free_reclaim_complete_data(void *data
)
7699 struct nfs4_reclaim_complete_data
*calldata
= data
;
7704 static const struct rpc_call_ops nfs4_reclaim_complete_call_ops
= {
7705 .rpc_call_prepare
= nfs4_reclaim_complete_prepare
,
7706 .rpc_call_done
= nfs4_reclaim_complete_done
,
7707 .rpc_release
= nfs4_free_reclaim_complete_data
,
7711 * Issue a global reclaim complete.
7713 static int nfs41_proc_reclaim_complete(struct nfs_client
*clp
,
7714 struct rpc_cred
*cred
)
7716 struct nfs4_reclaim_complete_data
*calldata
;
7717 struct rpc_task
*task
;
7718 struct rpc_message msg
= {
7719 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RECLAIM_COMPLETE
],
7722 struct rpc_task_setup task_setup_data
= {
7723 .rpc_client
= clp
->cl_rpcclient
,
7724 .rpc_message
= &msg
,
7725 .callback_ops
= &nfs4_reclaim_complete_call_ops
,
7726 .flags
= RPC_TASK_ASYNC
,
7728 int status
= -ENOMEM
;
7730 dprintk("--> %s\n", __func__
);
7731 calldata
= kzalloc(sizeof(*calldata
), GFP_NOFS
);
7732 if (calldata
== NULL
)
7734 calldata
->clp
= clp
;
7735 calldata
->arg
.one_fs
= 0;
7737 nfs4_init_sequence(&calldata
->arg
.seq_args
, &calldata
->res
.seq_res
, 0);
7738 nfs4_set_sequence_privileged(&calldata
->arg
.seq_args
);
7739 msg
.rpc_argp
= &calldata
->arg
;
7740 msg
.rpc_resp
= &calldata
->res
;
7741 task_setup_data
.callback_data
= calldata
;
7742 task
= rpc_run_task(&task_setup_data
);
7744 status
= PTR_ERR(task
);
7747 status
= nfs4_wait_for_completion_rpc_task(task
);
7749 status
= task
->tk_status
;
7753 dprintk("<-- %s status=%d\n", __func__
, status
);
7758 nfs4_layoutget_prepare(struct rpc_task
*task
, void *calldata
)
7760 struct nfs4_layoutget
*lgp
= calldata
;
7761 struct nfs_server
*server
= NFS_SERVER(lgp
->args
.inode
);
7762 struct nfs4_session
*session
= nfs4_get_session(server
);
7764 dprintk("--> %s\n", __func__
);
7765 /* Note the is a race here, where a CB_LAYOUTRECALL can come in
7766 * right now covering the LAYOUTGET we are about to send.
7767 * However, that is not so catastrophic, and there seems
7768 * to be no way to prevent it completely.
7770 if (nfs41_setup_sequence(session
, &lgp
->args
.seq_args
,
7771 &lgp
->res
.seq_res
, task
))
7773 if (pnfs_choose_layoutget_stateid(&lgp
->args
.stateid
,
7774 NFS_I(lgp
->args
.inode
)->layout
,
7776 lgp
->args
.ctx
->state
)) {
7777 rpc_exit(task
, NFS4_OK
);
7781 static void nfs4_layoutget_done(struct rpc_task
*task
, void *calldata
)
7783 struct nfs4_layoutget
*lgp
= calldata
;
7784 struct inode
*inode
= lgp
->args
.inode
;
7785 struct nfs_server
*server
= NFS_SERVER(inode
);
7786 struct pnfs_layout_hdr
*lo
;
7787 struct nfs4_state
*state
= NULL
;
7788 unsigned long timeo
, now
, giveup
;
7790 dprintk("--> %s tk_status => %d\n", __func__
, -task
->tk_status
);
7792 if (!nfs41_sequence_done(task
, &lgp
->res
.seq_res
))
7795 switch (task
->tk_status
) {
7800 * NFS4ERR_LAYOUTUNAVAILABLE means we are not supposed to use pnfs
7801 * on the file. set tk_status to -ENODATA to tell upper layer to
7804 case -NFS4ERR_LAYOUTUNAVAILABLE
:
7805 task
->tk_status
= -ENODATA
;
7808 * NFS4ERR_BADLAYOUT means the MDS cannot return a layout of
7809 * length lgp->args.minlength != 0 (see RFC5661 section 18.43.3).
7811 case -NFS4ERR_BADLAYOUT
:
7814 * NFS4ERR_LAYOUTTRYLATER is a conflict with another client
7815 * (or clients) writing to the same RAID stripe except when
7816 * the minlength argument is 0 (see RFC5661 section 18.43.3).
7818 case -NFS4ERR_LAYOUTTRYLATER
:
7819 if (lgp
->args
.minlength
== 0)
7822 * NFS4ERR_RECALLCONFLICT is when conflict with self (must recall
7823 * existing layout before getting a new one).
7825 case -NFS4ERR_RECALLCONFLICT
:
7826 timeo
= rpc_get_timeout(task
->tk_client
);
7827 giveup
= lgp
->args
.timestamp
+ timeo
;
7829 if (time_after(giveup
, now
)) {
7830 unsigned long delay
;
7833 * - Not less then NFS4_POLL_RETRY_MIN.
7834 * - One last time a jiffie before we give up
7835 * - exponential backoff (time_now minus start_attempt)
7837 delay
= max_t(unsigned long, NFS4_POLL_RETRY_MIN
,
7838 min((giveup
- now
- 1),
7839 now
- lgp
->args
.timestamp
));
7841 dprintk("%s: NFS4ERR_RECALLCONFLICT waiting %lu\n",
7843 rpc_delay(task
, delay
);
7844 /* Do not call nfs4_async_handle_error() */
7848 case -NFS4ERR_EXPIRED
:
7849 case -NFS4ERR_BAD_STATEID
:
7850 spin_lock(&inode
->i_lock
);
7851 if (nfs4_stateid_match(&lgp
->args
.stateid
,
7852 &lgp
->args
.ctx
->state
->stateid
)) {
7853 spin_unlock(&inode
->i_lock
);
7854 /* If the open stateid was bad, then recover it. */
7855 state
= lgp
->args
.ctx
->state
;
7858 lo
= NFS_I(inode
)->layout
;
7859 if (lo
&& nfs4_stateid_match(&lgp
->args
.stateid
,
7860 &lo
->plh_stateid
)) {
7864 * Mark the bad layout state as invalid, then retry
7865 * with the current stateid.
7867 set_bit(NFS_LAYOUT_INVALID_STID
, &lo
->plh_flags
);
7868 pnfs_mark_matching_lsegs_invalid(lo
, &head
, NULL
);
7869 spin_unlock(&inode
->i_lock
);
7870 pnfs_free_lseg_list(&head
);
7872 spin_unlock(&inode
->i_lock
);
7875 if (nfs4_async_handle_error(task
, server
, state
, &lgp
->timeout
) == -EAGAIN
)
7878 dprintk("<-- %s\n", __func__
);
7881 task
->tk_status
= 0;
7882 rpc_restart_call_prepare(task
);
7885 task
->tk_status
= -EOVERFLOW
;
7889 static size_t max_response_pages(struct nfs_server
*server
)
7891 u32 max_resp_sz
= server
->nfs_client
->cl_session
->fc_attrs
.max_resp_sz
;
7892 return nfs_page_array_len(0, max_resp_sz
);
7895 static void nfs4_free_pages(struct page
**pages
, size_t size
)
7902 for (i
= 0; i
< size
; i
++) {
7905 __free_page(pages
[i
]);
7910 static struct page
**nfs4_alloc_pages(size_t size
, gfp_t gfp_flags
)
7912 struct page
**pages
;
7915 pages
= kcalloc(size
, sizeof(struct page
*), gfp_flags
);
7917 dprintk("%s: can't alloc array of %zu pages\n", __func__
, size
);
7921 for (i
= 0; i
< size
; i
++) {
7922 pages
[i
] = alloc_page(gfp_flags
);
7924 dprintk("%s: failed to allocate page\n", __func__
);
7925 nfs4_free_pages(pages
, size
);
7933 static void nfs4_layoutget_release(void *calldata
)
7935 struct nfs4_layoutget
*lgp
= calldata
;
7936 struct inode
*inode
= lgp
->args
.inode
;
7937 struct nfs_server
*server
= NFS_SERVER(inode
);
7938 size_t max_pages
= max_response_pages(server
);
7940 dprintk("--> %s\n", __func__
);
7941 nfs4_free_pages(lgp
->args
.layout
.pages
, max_pages
);
7942 pnfs_put_layout_hdr(NFS_I(inode
)->layout
);
7943 put_nfs_open_context(lgp
->args
.ctx
);
7945 dprintk("<-- %s\n", __func__
);
7948 static const struct rpc_call_ops nfs4_layoutget_call_ops
= {
7949 .rpc_call_prepare
= nfs4_layoutget_prepare
,
7950 .rpc_call_done
= nfs4_layoutget_done
,
7951 .rpc_release
= nfs4_layoutget_release
,
7954 struct pnfs_layout_segment
*
7955 nfs4_proc_layoutget(struct nfs4_layoutget
*lgp
, gfp_t gfp_flags
)
7957 struct inode
*inode
= lgp
->args
.inode
;
7958 struct nfs_server
*server
= NFS_SERVER(inode
);
7959 size_t max_pages
= max_response_pages(server
);
7960 struct rpc_task
*task
;
7961 struct rpc_message msg
= {
7962 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LAYOUTGET
],
7963 .rpc_argp
= &lgp
->args
,
7964 .rpc_resp
= &lgp
->res
,
7965 .rpc_cred
= lgp
->cred
,
7967 struct rpc_task_setup task_setup_data
= {
7968 .rpc_client
= server
->client
,
7969 .rpc_message
= &msg
,
7970 .callback_ops
= &nfs4_layoutget_call_ops
,
7971 .callback_data
= lgp
,
7972 .flags
= RPC_TASK_ASYNC
,
7974 struct pnfs_layout_segment
*lseg
= NULL
;
7977 dprintk("--> %s\n", __func__
);
7979 /* nfs4_layoutget_release calls pnfs_put_layout_hdr */
7980 pnfs_get_layout_hdr(NFS_I(inode
)->layout
);
7982 lgp
->args
.layout
.pages
= nfs4_alloc_pages(max_pages
, gfp_flags
);
7983 if (!lgp
->args
.layout
.pages
) {
7984 nfs4_layoutget_release(lgp
);
7985 return ERR_PTR(-ENOMEM
);
7987 lgp
->args
.layout
.pglen
= max_pages
* PAGE_SIZE
;
7988 lgp
->args
.timestamp
= jiffies
;
7990 lgp
->res
.layoutp
= &lgp
->args
.layout
;
7991 lgp
->res
.seq_res
.sr_slot
= NULL
;
7992 nfs4_init_sequence(&lgp
->args
.seq_args
, &lgp
->res
.seq_res
, 0);
7994 task
= rpc_run_task(&task_setup_data
);
7996 return ERR_CAST(task
);
7997 status
= nfs4_wait_for_completion_rpc_task(task
);
7999 status
= task
->tk_status
;
8000 trace_nfs4_layoutget(lgp
->args
.ctx
,
8005 /* if layoutp->len is 0, nfs4_layoutget_prepare called rpc_exit */
8006 if (status
== 0 && lgp
->res
.layoutp
->len
)
8007 lseg
= pnfs_layout_process(lgp
);
8009 dprintk("<-- %s status=%d\n", __func__
, status
);
8011 return ERR_PTR(status
);
8016 nfs4_layoutreturn_prepare(struct rpc_task
*task
, void *calldata
)
8018 struct nfs4_layoutreturn
*lrp
= calldata
;
8020 dprintk("--> %s\n", __func__
);
8021 nfs41_setup_sequence(lrp
->clp
->cl_session
,
8022 &lrp
->args
.seq_args
,
8027 static void nfs4_layoutreturn_done(struct rpc_task
*task
, void *calldata
)
8029 struct nfs4_layoutreturn
*lrp
= calldata
;
8030 struct nfs_server
*server
;
8032 dprintk("--> %s\n", __func__
);
8034 if (!nfs41_sequence_done(task
, &lrp
->res
.seq_res
))
8037 server
= NFS_SERVER(lrp
->args
.inode
);
8038 switch (task
->tk_status
) {
8040 task
->tk_status
= 0;
8043 case -NFS4ERR_DELAY
:
8044 if (nfs4_async_handle_error(task
, server
, NULL
, NULL
) != -EAGAIN
)
8046 rpc_restart_call_prepare(task
);
8049 dprintk("<-- %s\n", __func__
);
8052 static void nfs4_layoutreturn_release(void *calldata
)
8054 struct nfs4_layoutreturn
*lrp
= calldata
;
8055 struct pnfs_layout_hdr
*lo
= lrp
->args
.layout
;
8058 dprintk("--> %s\n", __func__
);
8059 spin_lock(&lo
->plh_inode
->i_lock
);
8060 if (lrp
->res
.lrs_present
)
8061 pnfs_set_layout_stateid(lo
, &lrp
->res
.stateid
, true);
8062 pnfs_mark_matching_lsegs_invalid(lo
, &freeme
, &lrp
->args
.range
);
8063 pnfs_clear_layoutreturn_waitbit(lo
);
8064 lo
->plh_block_lgets
--;
8065 spin_unlock(&lo
->plh_inode
->i_lock
);
8066 pnfs_free_lseg_list(&freeme
);
8067 pnfs_put_layout_hdr(lrp
->args
.layout
);
8068 nfs_iput_and_deactive(lrp
->inode
);
8070 dprintk("<-- %s\n", __func__
);
8073 static const struct rpc_call_ops nfs4_layoutreturn_call_ops
= {
8074 .rpc_call_prepare
= nfs4_layoutreturn_prepare
,
8075 .rpc_call_done
= nfs4_layoutreturn_done
,
8076 .rpc_release
= nfs4_layoutreturn_release
,
8079 int nfs4_proc_layoutreturn(struct nfs4_layoutreturn
*lrp
, bool sync
)
8081 struct rpc_task
*task
;
8082 struct rpc_message msg
= {
8083 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LAYOUTRETURN
],
8084 .rpc_argp
= &lrp
->args
,
8085 .rpc_resp
= &lrp
->res
,
8086 .rpc_cred
= lrp
->cred
,
8088 struct rpc_task_setup task_setup_data
= {
8089 .rpc_client
= NFS_SERVER(lrp
->args
.inode
)->client
,
8090 .rpc_message
= &msg
,
8091 .callback_ops
= &nfs4_layoutreturn_call_ops
,
8092 .callback_data
= lrp
,
8096 dprintk("--> %s\n", __func__
);
8098 lrp
->inode
= nfs_igrab_and_active(lrp
->args
.inode
);
8100 nfs4_layoutreturn_release(lrp
);
8103 task_setup_data
.flags
|= RPC_TASK_ASYNC
;
8105 nfs4_init_sequence(&lrp
->args
.seq_args
, &lrp
->res
.seq_res
, 1);
8106 task
= rpc_run_task(&task_setup_data
);
8108 return PTR_ERR(task
);
8110 status
= task
->tk_status
;
8111 trace_nfs4_layoutreturn(lrp
->args
.inode
, &lrp
->args
.stateid
, status
);
8112 dprintk("<-- %s status=%d\n", __func__
, status
);
8118 _nfs4_proc_getdeviceinfo(struct nfs_server
*server
,
8119 struct pnfs_device
*pdev
,
8120 struct rpc_cred
*cred
)
8122 struct nfs4_getdeviceinfo_args args
= {
8124 .notify_types
= NOTIFY_DEVICEID4_CHANGE
|
8125 NOTIFY_DEVICEID4_DELETE
,
8127 struct nfs4_getdeviceinfo_res res
= {
8130 struct rpc_message msg
= {
8131 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETDEVICEINFO
],
8138 dprintk("--> %s\n", __func__
);
8139 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
8140 if (res
.notification
& ~args
.notify_types
)
8141 dprintk("%s: unsupported notification\n", __func__
);
8142 if (res
.notification
!= args
.notify_types
)
8145 dprintk("<-- %s status=%d\n", __func__
, status
);
8150 int nfs4_proc_getdeviceinfo(struct nfs_server
*server
,
8151 struct pnfs_device
*pdev
,
8152 struct rpc_cred
*cred
)
8154 struct nfs4_exception exception
= { };
8158 err
= nfs4_handle_exception(server
,
8159 _nfs4_proc_getdeviceinfo(server
, pdev
, cred
),
8161 } while (exception
.retry
);
8164 EXPORT_SYMBOL_GPL(nfs4_proc_getdeviceinfo
);
8166 static void nfs4_layoutcommit_prepare(struct rpc_task
*task
, void *calldata
)
8168 struct nfs4_layoutcommit_data
*data
= calldata
;
8169 struct nfs_server
*server
= NFS_SERVER(data
->args
.inode
);
8170 struct nfs4_session
*session
= nfs4_get_session(server
);
8172 nfs41_setup_sequence(session
,
8173 &data
->args
.seq_args
,
8179 nfs4_layoutcommit_done(struct rpc_task
*task
, void *calldata
)
8181 struct nfs4_layoutcommit_data
*data
= calldata
;
8182 struct nfs_server
*server
= NFS_SERVER(data
->args
.inode
);
8184 if (!nfs41_sequence_done(task
, &data
->res
.seq_res
))
8187 switch (task
->tk_status
) { /* Just ignore these failures */
8188 case -NFS4ERR_DELEG_REVOKED
: /* layout was recalled */
8189 case -NFS4ERR_BADIOMODE
: /* no IOMODE_RW layout for range */
8190 case -NFS4ERR_BADLAYOUT
: /* no layout */
8191 case -NFS4ERR_GRACE
: /* loca_recalim always false */
8192 task
->tk_status
= 0;
8196 if (nfs4_async_handle_error(task
, server
, NULL
, NULL
) == -EAGAIN
) {
8197 rpc_restart_call_prepare(task
);
8203 static void nfs4_layoutcommit_release(void *calldata
)
8205 struct nfs4_layoutcommit_data
*data
= calldata
;
8207 pnfs_cleanup_layoutcommit(data
);
8208 nfs_post_op_update_inode_force_wcc(data
->args
.inode
,
8210 put_rpccred(data
->cred
);
8211 nfs_iput_and_deactive(data
->inode
);
8215 static const struct rpc_call_ops nfs4_layoutcommit_ops
= {
8216 .rpc_call_prepare
= nfs4_layoutcommit_prepare
,
8217 .rpc_call_done
= nfs4_layoutcommit_done
,
8218 .rpc_release
= nfs4_layoutcommit_release
,
8222 nfs4_proc_layoutcommit(struct nfs4_layoutcommit_data
*data
, bool sync
)
8224 struct rpc_message msg
= {
8225 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LAYOUTCOMMIT
],
8226 .rpc_argp
= &data
->args
,
8227 .rpc_resp
= &data
->res
,
8228 .rpc_cred
= data
->cred
,
8230 struct rpc_task_setup task_setup_data
= {
8231 .task
= &data
->task
,
8232 .rpc_client
= NFS_CLIENT(data
->args
.inode
),
8233 .rpc_message
= &msg
,
8234 .callback_ops
= &nfs4_layoutcommit_ops
,
8235 .callback_data
= data
,
8237 struct rpc_task
*task
;
8240 dprintk("NFS: initiating layoutcommit call. sync %d "
8241 "lbw: %llu inode %lu\n", sync
,
8242 data
->args
.lastbytewritten
,
8243 data
->args
.inode
->i_ino
);
8246 data
->inode
= nfs_igrab_and_active(data
->args
.inode
);
8247 if (data
->inode
== NULL
) {
8248 nfs4_layoutcommit_release(data
);
8251 task_setup_data
.flags
= RPC_TASK_ASYNC
;
8253 nfs4_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
8254 task
= rpc_run_task(&task_setup_data
);
8256 return PTR_ERR(task
);
8258 status
= task
->tk_status
;
8259 trace_nfs4_layoutcommit(data
->args
.inode
, &data
->args
.stateid
, status
);
8260 dprintk("%s: status %d\n", __func__
, status
);
8266 * Use the state managment nfs_client cl_rpcclient, which uses krb5i (if
8267 * possible) as per RFC3530bis and RFC5661 Security Considerations sections
8270 _nfs41_proc_secinfo_no_name(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
8271 struct nfs_fsinfo
*info
,
8272 struct nfs4_secinfo_flavors
*flavors
, bool use_integrity
)
8274 struct nfs41_secinfo_no_name_args args
= {
8275 .style
= SECINFO_STYLE_CURRENT_FH
,
8277 struct nfs4_secinfo_res res
= {
8280 struct rpc_message msg
= {
8281 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SECINFO_NO_NAME
],
8285 struct rpc_clnt
*clnt
= server
->client
;
8286 struct rpc_cred
*cred
= NULL
;
8289 if (use_integrity
) {
8290 clnt
= server
->nfs_client
->cl_rpcclient
;
8291 cred
= nfs4_get_clid_cred(server
->nfs_client
);
8292 msg
.rpc_cred
= cred
;
8295 dprintk("--> %s\n", __func__
);
8296 status
= nfs4_call_sync(clnt
, server
, &msg
, &args
.seq_args
,
8298 dprintk("<-- %s status=%d\n", __func__
, status
);
8307 nfs41_proc_secinfo_no_name(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
8308 struct nfs_fsinfo
*info
, struct nfs4_secinfo_flavors
*flavors
)
8310 struct nfs4_exception exception
= { };
8313 /* first try using integrity protection */
8314 err
= -NFS4ERR_WRONGSEC
;
8316 /* try to use integrity protection with machine cred */
8317 if (_nfs4_is_integrity_protected(server
->nfs_client
))
8318 err
= _nfs41_proc_secinfo_no_name(server
, fhandle
, info
,
8322 * if unable to use integrity protection, or SECINFO with
8323 * integrity protection returns NFS4ERR_WRONGSEC (which is
8324 * disallowed by spec, but exists in deployed servers) use
8325 * the current filesystem's rpc_client and the user cred.
8327 if (err
== -NFS4ERR_WRONGSEC
)
8328 err
= _nfs41_proc_secinfo_no_name(server
, fhandle
, info
,
8333 case -NFS4ERR_WRONGSEC
:
8337 err
= nfs4_handle_exception(server
, err
, &exception
);
8339 } while (exception
.retry
);
8345 nfs41_find_root_sec(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
8346 struct nfs_fsinfo
*info
)
8350 rpc_authflavor_t flavor
= RPC_AUTH_MAXFLAVOR
;
8351 struct nfs4_secinfo_flavors
*flavors
;
8352 struct nfs4_secinfo4
*secinfo
;
8355 page
= alloc_page(GFP_KERNEL
);
8361 flavors
= page_address(page
);
8362 err
= nfs41_proc_secinfo_no_name(server
, fhandle
, info
, flavors
);
8365 * Fall back on "guess and check" method if
8366 * the server doesn't support SECINFO_NO_NAME
8368 if (err
== -NFS4ERR_WRONGSEC
|| err
== -ENOTSUPP
) {
8369 err
= nfs4_find_root_sec(server
, fhandle
, info
);
8375 for (i
= 0; i
< flavors
->num_flavors
; i
++) {
8376 secinfo
= &flavors
->flavors
[i
];
8378 switch (secinfo
->flavor
) {
8382 flavor
= rpcauth_get_pseudoflavor(secinfo
->flavor
,
8383 &secinfo
->flavor_info
);
8386 flavor
= RPC_AUTH_MAXFLAVOR
;
8390 if (!nfs_auth_info_match(&server
->auth_info
, flavor
))
8391 flavor
= RPC_AUTH_MAXFLAVOR
;
8393 if (flavor
!= RPC_AUTH_MAXFLAVOR
) {
8394 err
= nfs4_lookup_root_sec(server
, fhandle
,
8401 if (flavor
== RPC_AUTH_MAXFLAVOR
)
8412 static int _nfs41_test_stateid(struct nfs_server
*server
,
8413 nfs4_stateid
*stateid
,
8414 struct rpc_cred
*cred
)
8417 struct nfs41_test_stateid_args args
= {
8420 struct nfs41_test_stateid_res res
;
8421 struct rpc_message msg
= {
8422 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_TEST_STATEID
],
8427 struct rpc_clnt
*rpc_client
= server
->client
;
8429 nfs4_state_protect(server
->nfs_client
, NFS_SP4_MACH_CRED_STATEID
,
8432 dprintk("NFS call test_stateid %p\n", stateid
);
8433 nfs4_init_sequence(&args
.seq_args
, &res
.seq_res
, 0);
8434 nfs4_set_sequence_privileged(&args
.seq_args
);
8435 status
= nfs4_call_sync_sequence(rpc_client
, server
, &msg
,
8436 &args
.seq_args
, &res
.seq_res
);
8437 if (status
!= NFS_OK
) {
8438 dprintk("NFS reply test_stateid: failed, %d\n", status
);
8441 dprintk("NFS reply test_stateid: succeeded, %d\n", -res
.status
);
8446 * nfs41_test_stateid - perform a TEST_STATEID operation
8448 * @server: server / transport on which to perform the operation
8449 * @stateid: state ID to test
8452 * Returns NFS_OK if the server recognizes that "stateid" is valid.
8453 * Otherwise a negative NFS4ERR value is returned if the operation
8454 * failed or the state ID is not currently valid.
8456 static int nfs41_test_stateid(struct nfs_server
*server
,
8457 nfs4_stateid
*stateid
,
8458 struct rpc_cred
*cred
)
8460 struct nfs4_exception exception
= { };
8463 err
= _nfs41_test_stateid(server
, stateid
, cred
);
8464 if (err
!= -NFS4ERR_DELAY
)
8466 nfs4_handle_exception(server
, err
, &exception
);
8467 } while (exception
.retry
);
8471 struct nfs_free_stateid_data
{
8472 struct nfs_server
*server
;
8473 struct nfs41_free_stateid_args args
;
8474 struct nfs41_free_stateid_res res
;
8477 static void nfs41_free_stateid_prepare(struct rpc_task
*task
, void *calldata
)
8479 struct nfs_free_stateid_data
*data
= calldata
;
8480 nfs41_setup_sequence(nfs4_get_session(data
->server
),
8481 &data
->args
.seq_args
,
8486 static void nfs41_free_stateid_done(struct rpc_task
*task
, void *calldata
)
8488 struct nfs_free_stateid_data
*data
= calldata
;
8490 nfs41_sequence_done(task
, &data
->res
.seq_res
);
8492 switch (task
->tk_status
) {
8493 case -NFS4ERR_DELAY
:
8494 if (nfs4_async_handle_error(task
, data
->server
, NULL
, NULL
) == -EAGAIN
)
8495 rpc_restart_call_prepare(task
);
8499 static void nfs41_free_stateid_release(void *calldata
)
8504 static const struct rpc_call_ops nfs41_free_stateid_ops
= {
8505 .rpc_call_prepare
= nfs41_free_stateid_prepare
,
8506 .rpc_call_done
= nfs41_free_stateid_done
,
8507 .rpc_release
= nfs41_free_stateid_release
,
8510 static struct rpc_task
*_nfs41_free_stateid(struct nfs_server
*server
,
8511 nfs4_stateid
*stateid
,
8512 struct rpc_cred
*cred
,
8515 struct rpc_message msg
= {
8516 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FREE_STATEID
],
8519 struct rpc_task_setup task_setup
= {
8520 .rpc_client
= server
->client
,
8521 .rpc_message
= &msg
,
8522 .callback_ops
= &nfs41_free_stateid_ops
,
8523 .flags
= RPC_TASK_ASYNC
,
8525 struct nfs_free_stateid_data
*data
;
8527 nfs4_state_protect(server
->nfs_client
, NFS_SP4_MACH_CRED_STATEID
,
8528 &task_setup
.rpc_client
, &msg
);
8530 dprintk("NFS call free_stateid %p\n", stateid
);
8531 data
= kmalloc(sizeof(*data
), GFP_NOFS
);
8533 return ERR_PTR(-ENOMEM
);
8534 data
->server
= server
;
8535 nfs4_stateid_copy(&data
->args
.stateid
, stateid
);
8537 task_setup
.callback_data
= data
;
8539 msg
.rpc_argp
= &data
->args
;
8540 msg
.rpc_resp
= &data
->res
;
8541 nfs4_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 0);
8543 nfs4_set_sequence_privileged(&data
->args
.seq_args
);
8545 return rpc_run_task(&task_setup
);
8549 * nfs41_free_stateid - perform a FREE_STATEID operation
8551 * @server: server / transport on which to perform the operation
8552 * @stateid: state ID to release
8555 * Returns NFS_OK if the server freed "stateid". Otherwise a
8556 * negative NFS4ERR value is returned.
8558 static int nfs41_free_stateid(struct nfs_server
*server
,
8559 nfs4_stateid
*stateid
,
8560 struct rpc_cred
*cred
)
8562 struct rpc_task
*task
;
8565 task
= _nfs41_free_stateid(server
, stateid
, cred
, true);
8567 return PTR_ERR(task
);
8568 ret
= rpc_wait_for_completion_task(task
);
8570 ret
= task
->tk_status
;
8576 nfs41_free_lock_state(struct nfs_server
*server
, struct nfs4_lock_state
*lsp
)
8578 struct rpc_task
*task
;
8579 struct rpc_cred
*cred
= lsp
->ls_state
->owner
->so_cred
;
8581 task
= _nfs41_free_stateid(server
, &lsp
->ls_stateid
, cred
, false);
8582 nfs4_free_lock_state(server
, lsp
);
8588 static bool nfs41_match_stateid(const nfs4_stateid
*s1
,
8589 const nfs4_stateid
*s2
)
8591 if (memcmp(s1
->other
, s2
->other
, sizeof(s1
->other
)) != 0)
8594 if (s1
->seqid
== s2
->seqid
)
8596 if (s1
->seqid
== 0 || s2
->seqid
== 0)
8602 #endif /* CONFIG_NFS_V4_1 */
8604 static bool nfs4_match_stateid(const nfs4_stateid
*s1
,
8605 const nfs4_stateid
*s2
)
8607 return nfs4_stateid_match(s1
, s2
);
8611 static const struct nfs4_state_recovery_ops nfs40_reboot_recovery_ops
= {
8612 .owner_flag_bit
= NFS_OWNER_RECLAIM_REBOOT
,
8613 .state_flag_bit
= NFS_STATE_RECLAIM_REBOOT
,
8614 .recover_open
= nfs4_open_reclaim
,
8615 .recover_lock
= nfs4_lock_reclaim
,
8616 .establish_clid
= nfs4_init_clientid
,
8617 .detect_trunking
= nfs40_discover_server_trunking
,
8620 #if defined(CONFIG_NFS_V4_1)
8621 static const struct nfs4_state_recovery_ops nfs41_reboot_recovery_ops
= {
8622 .owner_flag_bit
= NFS_OWNER_RECLAIM_REBOOT
,
8623 .state_flag_bit
= NFS_STATE_RECLAIM_REBOOT
,
8624 .recover_open
= nfs4_open_reclaim
,
8625 .recover_lock
= nfs4_lock_reclaim
,
8626 .establish_clid
= nfs41_init_clientid
,
8627 .reclaim_complete
= nfs41_proc_reclaim_complete
,
8628 .detect_trunking
= nfs41_discover_server_trunking
,
8630 #endif /* CONFIG_NFS_V4_1 */
8632 static const struct nfs4_state_recovery_ops nfs40_nograce_recovery_ops
= {
8633 .owner_flag_bit
= NFS_OWNER_RECLAIM_NOGRACE
,
8634 .state_flag_bit
= NFS_STATE_RECLAIM_NOGRACE
,
8635 .recover_open
= nfs40_open_expired
,
8636 .recover_lock
= nfs4_lock_expired
,
8637 .establish_clid
= nfs4_init_clientid
,
8640 #if defined(CONFIG_NFS_V4_1)
8641 static const struct nfs4_state_recovery_ops nfs41_nograce_recovery_ops
= {
8642 .owner_flag_bit
= NFS_OWNER_RECLAIM_NOGRACE
,
8643 .state_flag_bit
= NFS_STATE_RECLAIM_NOGRACE
,
8644 .recover_open
= nfs41_open_expired
,
8645 .recover_lock
= nfs41_lock_expired
,
8646 .establish_clid
= nfs41_init_clientid
,
8648 #endif /* CONFIG_NFS_V4_1 */
8650 static const struct nfs4_state_maintenance_ops nfs40_state_renewal_ops
= {
8651 .sched_state_renewal
= nfs4_proc_async_renew
,
8652 .get_state_renewal_cred_locked
= nfs4_get_renew_cred_locked
,
8653 .renew_lease
= nfs4_proc_renew
,
8656 #if defined(CONFIG_NFS_V4_1)
8657 static const struct nfs4_state_maintenance_ops nfs41_state_renewal_ops
= {
8658 .sched_state_renewal
= nfs41_proc_async_sequence
,
8659 .get_state_renewal_cred_locked
= nfs4_get_machine_cred_locked
,
8660 .renew_lease
= nfs4_proc_sequence
,
8664 static const struct nfs4_mig_recovery_ops nfs40_mig_recovery_ops
= {
8665 .get_locations
= _nfs40_proc_get_locations
,
8666 .fsid_present
= _nfs40_proc_fsid_present
,
8669 #if defined(CONFIG_NFS_V4_1)
8670 static const struct nfs4_mig_recovery_ops nfs41_mig_recovery_ops
= {
8671 .get_locations
= _nfs41_proc_get_locations
,
8672 .fsid_present
= _nfs41_proc_fsid_present
,
8674 #endif /* CONFIG_NFS_V4_1 */
8676 static const struct nfs4_minor_version_ops nfs_v4_0_minor_ops
= {
8678 .init_caps
= NFS_CAP_READDIRPLUS
8679 | NFS_CAP_ATOMIC_OPEN
8680 | NFS_CAP_POSIX_LOCK
,
8681 .init_client
= nfs40_init_client
,
8682 .shutdown_client
= nfs40_shutdown_client
,
8683 .match_stateid
= nfs4_match_stateid
,
8684 .find_root_sec
= nfs4_find_root_sec
,
8685 .free_lock_state
= nfs4_release_lockowner
,
8686 .alloc_seqid
= nfs_alloc_seqid
,
8687 .call_sync_ops
= &nfs40_call_sync_ops
,
8688 .reboot_recovery_ops
= &nfs40_reboot_recovery_ops
,
8689 .nograce_recovery_ops
= &nfs40_nograce_recovery_ops
,
8690 .state_renewal_ops
= &nfs40_state_renewal_ops
,
8691 .mig_recovery_ops
= &nfs40_mig_recovery_ops
,
8694 #if defined(CONFIG_NFS_V4_1)
8695 static struct nfs_seqid
*
8696 nfs_alloc_no_seqid(struct nfs_seqid_counter
*arg1
, gfp_t arg2
)
8701 static const struct nfs4_minor_version_ops nfs_v4_1_minor_ops
= {
8703 .init_caps
= NFS_CAP_READDIRPLUS
8704 | NFS_CAP_ATOMIC_OPEN
8705 | NFS_CAP_POSIX_LOCK
8706 | NFS_CAP_STATEID_NFSV41
8707 | NFS_CAP_ATOMIC_OPEN_V1
,
8708 .init_client
= nfs41_init_client
,
8709 .shutdown_client
= nfs41_shutdown_client
,
8710 .match_stateid
= nfs41_match_stateid
,
8711 .find_root_sec
= nfs41_find_root_sec
,
8712 .free_lock_state
= nfs41_free_lock_state
,
8713 .alloc_seqid
= nfs_alloc_no_seqid
,
8714 .call_sync_ops
= &nfs41_call_sync_ops
,
8715 .reboot_recovery_ops
= &nfs41_reboot_recovery_ops
,
8716 .nograce_recovery_ops
= &nfs41_nograce_recovery_ops
,
8717 .state_renewal_ops
= &nfs41_state_renewal_ops
,
8718 .mig_recovery_ops
= &nfs41_mig_recovery_ops
,
8722 #if defined(CONFIG_NFS_V4_2)
8723 static const struct nfs4_minor_version_ops nfs_v4_2_minor_ops
= {
8725 .init_caps
= NFS_CAP_READDIRPLUS
8726 | NFS_CAP_ATOMIC_OPEN
8727 | NFS_CAP_POSIX_LOCK
8728 | NFS_CAP_STATEID_NFSV41
8729 | NFS_CAP_ATOMIC_OPEN_V1
8731 | NFS_CAP_DEALLOCATE
8733 | NFS_CAP_LAYOUTSTATS
8735 .init_client
= nfs41_init_client
,
8736 .shutdown_client
= nfs41_shutdown_client
,
8737 .match_stateid
= nfs41_match_stateid
,
8738 .find_root_sec
= nfs41_find_root_sec
,
8739 .free_lock_state
= nfs41_free_lock_state
,
8740 .call_sync_ops
= &nfs41_call_sync_ops
,
8741 .alloc_seqid
= nfs_alloc_no_seqid
,
8742 .reboot_recovery_ops
= &nfs41_reboot_recovery_ops
,
8743 .nograce_recovery_ops
= &nfs41_nograce_recovery_ops
,
8744 .state_renewal_ops
= &nfs41_state_renewal_ops
,
8745 .mig_recovery_ops
= &nfs41_mig_recovery_ops
,
8749 const struct nfs4_minor_version_ops
*nfs_v4_minor_ops
[] = {
8750 [0] = &nfs_v4_0_minor_ops
,
8751 #if defined(CONFIG_NFS_V4_1)
8752 [1] = &nfs_v4_1_minor_ops
,
8754 #if defined(CONFIG_NFS_V4_2)
8755 [2] = &nfs_v4_2_minor_ops
,
8759 static const struct inode_operations nfs4_dir_inode_operations
= {
8760 .create
= nfs_create
,
8761 .lookup
= nfs_lookup
,
8762 .atomic_open
= nfs_atomic_open
,
8764 .unlink
= nfs_unlink
,
8765 .symlink
= nfs_symlink
,
8769 .rename
= nfs_rename
,
8770 .permission
= nfs_permission
,
8771 .getattr
= nfs_getattr
,
8772 .setattr
= nfs_setattr
,
8773 .getxattr
= generic_getxattr
,
8774 .setxattr
= generic_setxattr
,
8775 .listxattr
= generic_listxattr
,
8776 .removexattr
= generic_removexattr
,
8779 static const struct inode_operations nfs4_file_inode_operations
= {
8780 .permission
= nfs_permission
,
8781 .getattr
= nfs_getattr
,
8782 .setattr
= nfs_setattr
,
8783 .getxattr
= generic_getxattr
,
8784 .setxattr
= generic_setxattr
,
8785 .listxattr
= generic_listxattr
,
8786 .removexattr
= generic_removexattr
,
8789 const struct nfs_rpc_ops nfs_v4_clientops
= {
8790 .version
= 4, /* protocol version */
8791 .dentry_ops
= &nfs4_dentry_operations
,
8792 .dir_inode_ops
= &nfs4_dir_inode_operations
,
8793 .file_inode_ops
= &nfs4_file_inode_operations
,
8794 .file_ops
= &nfs4_file_operations
,
8795 .getroot
= nfs4_proc_get_root
,
8796 .submount
= nfs4_submount
,
8797 .try_mount
= nfs4_try_mount
,
8798 .getattr
= nfs4_proc_getattr
,
8799 .setattr
= nfs4_proc_setattr
,
8800 .lookup
= nfs4_proc_lookup
,
8801 .access
= nfs4_proc_access
,
8802 .readlink
= nfs4_proc_readlink
,
8803 .create
= nfs4_proc_create
,
8804 .remove
= nfs4_proc_remove
,
8805 .unlink_setup
= nfs4_proc_unlink_setup
,
8806 .unlink_rpc_prepare
= nfs4_proc_unlink_rpc_prepare
,
8807 .unlink_done
= nfs4_proc_unlink_done
,
8808 .rename_setup
= nfs4_proc_rename_setup
,
8809 .rename_rpc_prepare
= nfs4_proc_rename_rpc_prepare
,
8810 .rename_done
= nfs4_proc_rename_done
,
8811 .link
= nfs4_proc_link
,
8812 .symlink
= nfs4_proc_symlink
,
8813 .mkdir
= nfs4_proc_mkdir
,
8814 .rmdir
= nfs4_proc_remove
,
8815 .readdir
= nfs4_proc_readdir
,
8816 .mknod
= nfs4_proc_mknod
,
8817 .statfs
= nfs4_proc_statfs
,
8818 .fsinfo
= nfs4_proc_fsinfo
,
8819 .pathconf
= nfs4_proc_pathconf
,
8820 .set_capabilities
= nfs4_server_capabilities
,
8821 .decode_dirent
= nfs4_decode_dirent
,
8822 .pgio_rpc_prepare
= nfs4_proc_pgio_rpc_prepare
,
8823 .read_setup
= nfs4_proc_read_setup
,
8824 .read_done
= nfs4_read_done
,
8825 .write_setup
= nfs4_proc_write_setup
,
8826 .write_done
= nfs4_write_done
,
8827 .commit_setup
= nfs4_proc_commit_setup
,
8828 .commit_rpc_prepare
= nfs4_proc_commit_rpc_prepare
,
8829 .commit_done
= nfs4_commit_done
,
8830 .lock
= nfs4_proc_lock
,
8831 .clear_acl_cache
= nfs4_zap_acl_attr
,
8832 .close_context
= nfs4_close_context
,
8833 .open_context
= nfs4_atomic_open
,
8834 .have_delegation
= nfs4_have_delegation
,
8835 .return_delegation
= nfs4_inode_return_delegation
,
8836 .alloc_client
= nfs4_alloc_client
,
8837 .init_client
= nfs4_init_client
,
8838 .free_client
= nfs4_free_client
,
8839 .create_server
= nfs4_create_server
,
8840 .clone_server
= nfs_clone_server
,
8843 static const struct xattr_handler nfs4_xattr_nfs4_acl_handler
= {
8844 .prefix
= XATTR_NAME_NFSV4_ACL
,
8845 .list
= nfs4_xattr_list_nfs4_acl
,
8846 .get
= nfs4_xattr_get_nfs4_acl
,
8847 .set
= nfs4_xattr_set_nfs4_acl
,
8850 const struct xattr_handler
*nfs4_xattr_handlers
[] = {
8851 &nfs4_xattr_nfs4_acl_handler
,
8852 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
8853 &nfs4_xattr_nfs4_label_handler
,