4 * Client-side procedure declarations for NFSv4.
6 * Copyright (c) 2002 The Regents of the University of Michigan.
9 * Kendrick Smith <kmsmith@umich.edu>
10 * Andy Adamson <andros@umich.edu>
12 * Redistribution and use in source and binary forms, with or without
13 * modification, are permitted provided that the following conditions
16 * 1. Redistributions of source code must retain the above copyright
17 * notice, this list of conditions and the following disclaimer.
18 * 2. Redistributions in binary form must reproduce the above copyright
19 * notice, this list of conditions and the following disclaimer in the
20 * documentation and/or other materials provided with the distribution.
21 * 3. Neither the name of the University nor the names of its
22 * contributors may be used to endorse or promote products derived
23 * from this software without specific prior written permission.
25 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
26 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
27 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
28 * DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
29 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
30 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
31 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
32 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
33 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
34 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
35 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
39 #include <linux/delay.h>
40 #include <linux/errno.h>
41 #include <linux/string.h>
42 #include <linux/ratelimit.h>
43 #include <linux/printk.h>
44 #include <linux/slab.h>
45 #include <linux/sunrpc/clnt.h>
46 #include <linux/nfs.h>
47 #include <linux/nfs4.h>
48 #include <linux/nfs_fs.h>
49 #include <linux/nfs_page.h>
50 #include <linux/nfs_mount.h>
51 #include <linux/namei.h>
52 #include <linux/mount.h>
53 #include <linux/module.h>
54 #include <linux/nfs_idmap.h>
55 #include <linux/xattr.h>
56 #include <linux/utsname.h>
57 #include <linux/freezer.h>
60 #include "delegation.h"
66 #include "nfs4session.h"
69 #define NFSDBG_FACILITY NFSDBG_PROC
71 #define NFS4_POLL_RETRY_MIN (HZ/10)
72 #define NFS4_POLL_RETRY_MAX (15*HZ)
75 static int _nfs4_proc_open(struct nfs4_opendata
*data
);
76 static int _nfs4_recover_proc_open(struct nfs4_opendata
*data
);
77 static int nfs4_do_fsinfo(struct nfs_server
*, struct nfs_fh
*, struct nfs_fsinfo
*);
78 static int nfs4_async_handle_error(struct rpc_task
*, const struct nfs_server
*, struct nfs4_state
*);
79 static void nfs_fixup_referral_attributes(struct nfs_fattr
*fattr
);
80 static int nfs4_proc_getattr(struct nfs_server
*, struct nfs_fh
*, struct nfs_fattr
*);
81 static int _nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
);
82 static int nfs4_do_setattr(struct inode
*inode
, struct rpc_cred
*cred
,
83 struct nfs_fattr
*fattr
, struct iattr
*sattr
,
84 struct nfs4_state
*state
);
85 #ifdef CONFIG_NFS_V4_1
86 static int nfs41_test_stateid(struct nfs_server
*, nfs4_stateid
*);
87 static int nfs41_free_stateid(struct nfs_server
*, nfs4_stateid
*);
89 /* Prevent leaks of NFSv4 errors into userland */
90 static int nfs4_map_errors(int err
)
95 case -NFS4ERR_RESOURCE
:
96 case -NFS4ERR_LAYOUTTRYLATER
:
97 case -NFS4ERR_RECALLCONFLICT
:
99 case -NFS4ERR_WRONGSEC
:
101 case -NFS4ERR_BADOWNER
:
102 case -NFS4ERR_BADNAME
:
104 case -NFS4ERR_SHARE_DENIED
:
106 case -NFS4ERR_MINOR_VERS_MISMATCH
:
107 return -EPROTONOSUPPORT
;
108 case -NFS4ERR_ACCESS
:
110 case -NFS4ERR_FILE_OPEN
:
113 dprintk("%s could not handle NFSv4 error %d\n",
121 * This is our standard bitmap for GETATTR requests.
123 const u32 nfs4_fattr_bitmap
[3] = {
125 | FATTR4_WORD0_CHANGE
128 | FATTR4_WORD0_FILEID
,
130 | FATTR4_WORD1_NUMLINKS
132 | FATTR4_WORD1_OWNER_GROUP
133 | FATTR4_WORD1_RAWDEV
134 | FATTR4_WORD1_SPACE_USED
135 | FATTR4_WORD1_TIME_ACCESS
136 | FATTR4_WORD1_TIME_METADATA
137 | FATTR4_WORD1_TIME_MODIFY
140 static const u32 nfs4_pnfs_open_bitmap
[3] = {
142 | FATTR4_WORD0_CHANGE
145 | FATTR4_WORD0_FILEID
,
147 | FATTR4_WORD1_NUMLINKS
149 | FATTR4_WORD1_OWNER_GROUP
150 | FATTR4_WORD1_RAWDEV
151 | FATTR4_WORD1_SPACE_USED
152 | FATTR4_WORD1_TIME_ACCESS
153 | FATTR4_WORD1_TIME_METADATA
154 | FATTR4_WORD1_TIME_MODIFY
,
155 FATTR4_WORD2_MDSTHRESHOLD
158 static const u32 nfs4_open_noattr_bitmap
[3] = {
160 | FATTR4_WORD0_CHANGE
161 | FATTR4_WORD0_FILEID
,
164 const u32 nfs4_statfs_bitmap
[2] = {
165 FATTR4_WORD0_FILES_AVAIL
166 | FATTR4_WORD0_FILES_FREE
167 | FATTR4_WORD0_FILES_TOTAL
,
168 FATTR4_WORD1_SPACE_AVAIL
169 | FATTR4_WORD1_SPACE_FREE
170 | FATTR4_WORD1_SPACE_TOTAL
173 const u32 nfs4_pathconf_bitmap
[2] = {
175 | FATTR4_WORD0_MAXNAME
,
179 const u32 nfs4_fsinfo_bitmap
[3] = { FATTR4_WORD0_MAXFILESIZE
180 | FATTR4_WORD0_MAXREAD
181 | FATTR4_WORD0_MAXWRITE
182 | FATTR4_WORD0_LEASE_TIME
,
183 FATTR4_WORD1_TIME_DELTA
184 | FATTR4_WORD1_FS_LAYOUT_TYPES
,
185 FATTR4_WORD2_LAYOUT_BLKSIZE
188 const u32 nfs4_fs_locations_bitmap
[2] = {
190 | FATTR4_WORD0_CHANGE
193 | FATTR4_WORD0_FILEID
194 | FATTR4_WORD0_FS_LOCATIONS
,
196 | FATTR4_WORD1_NUMLINKS
198 | FATTR4_WORD1_OWNER_GROUP
199 | FATTR4_WORD1_RAWDEV
200 | FATTR4_WORD1_SPACE_USED
201 | FATTR4_WORD1_TIME_ACCESS
202 | FATTR4_WORD1_TIME_METADATA
203 | FATTR4_WORD1_TIME_MODIFY
204 | FATTR4_WORD1_MOUNTED_ON_FILEID
207 static void nfs4_setup_readdir(u64 cookie
, __be32
*verifier
, struct dentry
*dentry
,
208 struct nfs4_readdir_arg
*readdir
)
213 readdir
->cookie
= cookie
;
214 memcpy(&readdir
->verifier
, verifier
, sizeof(readdir
->verifier
));
219 memset(&readdir
->verifier
, 0, sizeof(readdir
->verifier
));
224 * NFSv4 servers do not return entries for '.' and '..'
225 * Therefore, we fake these entries here. We let '.'
226 * have cookie 0 and '..' have cookie 1. Note that
227 * when talking to the server, we always send cookie 0
230 start
= p
= kmap_atomic(*readdir
->pages
);
233 *p
++ = xdr_one
; /* next */
234 *p
++ = xdr_zero
; /* cookie, first word */
235 *p
++ = xdr_one
; /* cookie, second word */
236 *p
++ = xdr_one
; /* entry len */
237 memcpy(p
, ".\0\0\0", 4); /* entry */
239 *p
++ = xdr_one
; /* bitmap length */
240 *p
++ = htonl(FATTR4_WORD0_FILEID
); /* bitmap */
241 *p
++ = htonl(8); /* attribute buffer length */
242 p
= xdr_encode_hyper(p
, NFS_FILEID(dentry
->d_inode
));
245 *p
++ = xdr_one
; /* next */
246 *p
++ = xdr_zero
; /* cookie, first word */
247 *p
++ = xdr_two
; /* cookie, second word */
248 *p
++ = xdr_two
; /* entry len */
249 memcpy(p
, "..\0\0", 4); /* entry */
251 *p
++ = xdr_one
; /* bitmap length */
252 *p
++ = htonl(FATTR4_WORD0_FILEID
); /* bitmap */
253 *p
++ = htonl(8); /* attribute buffer length */
254 p
= xdr_encode_hyper(p
, NFS_FILEID(dentry
->d_parent
->d_inode
));
256 readdir
->pgbase
= (char *)p
- (char *)start
;
257 readdir
->count
-= readdir
->pgbase
;
258 kunmap_atomic(start
);
261 static int nfs4_delay(struct rpc_clnt
*clnt
, long *timeout
)
268 *timeout
= NFS4_POLL_RETRY_MIN
;
269 if (*timeout
> NFS4_POLL_RETRY_MAX
)
270 *timeout
= NFS4_POLL_RETRY_MAX
;
271 freezable_schedule_timeout_killable_unsafe(*timeout
);
272 if (fatal_signal_pending(current
))
278 /* This is the error handling routine for processes that are allowed
281 static int nfs4_handle_exception(struct nfs_server
*server
, int errorcode
, struct nfs4_exception
*exception
)
283 struct nfs_client
*clp
= server
->nfs_client
;
284 struct nfs4_state
*state
= exception
->state
;
285 struct inode
*inode
= exception
->inode
;
288 exception
->retry
= 0;
292 case -NFS4ERR_OPENMODE
:
293 if (inode
&& nfs4_have_delegation(inode
, FMODE_READ
)) {
294 nfs4_inode_return_delegation(inode
);
295 exception
->retry
= 1;
300 ret
= nfs4_schedule_stateid_recovery(server
, state
);
303 goto wait_on_recovery
;
304 case -NFS4ERR_DELEG_REVOKED
:
305 case -NFS4ERR_ADMIN_REVOKED
:
306 case -NFS4ERR_BAD_STATEID
:
307 if (inode
!= NULL
&& nfs4_have_delegation(inode
, FMODE_READ
)) {
308 nfs_remove_bad_delegation(inode
);
309 exception
->retry
= 1;
314 ret
= nfs4_schedule_stateid_recovery(server
, state
);
317 goto wait_on_recovery
;
318 case -NFS4ERR_EXPIRED
:
320 ret
= nfs4_schedule_stateid_recovery(server
, state
);
324 case -NFS4ERR_STALE_STATEID
:
325 case -NFS4ERR_STALE_CLIENTID
:
326 nfs4_schedule_lease_recovery(clp
);
327 goto wait_on_recovery
;
328 #if defined(CONFIG_NFS_V4_1)
329 case -NFS4ERR_BADSESSION
:
330 case -NFS4ERR_BADSLOT
:
331 case -NFS4ERR_BAD_HIGH_SLOT
:
332 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
333 case -NFS4ERR_DEADSESSION
:
334 case -NFS4ERR_SEQ_FALSE_RETRY
:
335 case -NFS4ERR_SEQ_MISORDERED
:
336 dprintk("%s ERROR: %d Reset session\n", __func__
,
338 nfs4_schedule_session_recovery(clp
->cl_session
, errorcode
);
339 goto wait_on_recovery
;
340 #endif /* defined(CONFIG_NFS_V4_1) */
341 case -NFS4ERR_FILE_OPEN
:
342 if (exception
->timeout
> HZ
) {
343 /* We have retried a decent amount, time to
351 ret
= nfs4_delay(server
->client
, &exception
->timeout
);
354 case -NFS4ERR_RETRY_UNCACHED_REP
:
355 case -NFS4ERR_OLD_STATEID
:
356 exception
->retry
= 1;
358 case -NFS4ERR_BADOWNER
:
359 /* The following works around a Linux server bug! */
360 case -NFS4ERR_BADNAME
:
361 if (server
->caps
& NFS_CAP_UIDGID_NOMAP
) {
362 server
->caps
&= ~NFS_CAP_UIDGID_NOMAP
;
363 exception
->retry
= 1;
364 printk(KERN_WARNING
"NFS: v4 server %s "
365 "does not accept raw "
367 "Reenabling the idmapper.\n",
368 server
->nfs_client
->cl_hostname
);
371 /* We failed to handle the error */
372 return nfs4_map_errors(ret
);
374 ret
= nfs4_wait_clnt_recover(clp
);
376 exception
->retry
= 1;
381 static void do_renew_lease(struct nfs_client
*clp
, unsigned long timestamp
)
383 spin_lock(&clp
->cl_lock
);
384 if (time_before(clp
->cl_last_renewal
,timestamp
))
385 clp
->cl_last_renewal
= timestamp
;
386 spin_unlock(&clp
->cl_lock
);
389 static void renew_lease(const struct nfs_server
*server
, unsigned long timestamp
)
391 do_renew_lease(server
->nfs_client
, timestamp
);
394 #if defined(CONFIG_NFS_V4_1)
396 static void nfs41_sequence_free_slot(struct nfs4_sequence_res
*res
)
398 struct nfs4_session
*session
;
399 struct nfs4_slot_table
*tbl
;
400 bool send_new_highest_used_slotid
= false;
403 /* just wake up the next guy waiting since
404 * we may have not consumed a slot after all */
405 dprintk("%s: No slot\n", __func__
);
408 tbl
= res
->sr_slot
->table
;
409 session
= tbl
->session
;
411 spin_lock(&tbl
->slot_tbl_lock
);
412 /* Be nice to the server: try to ensure that the last transmitted
413 * value for highest_user_slotid <= target_highest_slotid
415 if (tbl
->highest_used_slotid
> tbl
->target_highest_slotid
)
416 send_new_highest_used_slotid
= true;
418 if (nfs41_wake_and_assign_slot(tbl
, res
->sr_slot
)) {
419 send_new_highest_used_slotid
= false;
422 nfs4_free_slot(tbl
, res
->sr_slot
);
424 if (tbl
->highest_used_slotid
!= NFS4_NO_SLOT
)
425 send_new_highest_used_slotid
= false;
427 spin_unlock(&tbl
->slot_tbl_lock
);
429 if (send_new_highest_used_slotid
)
430 nfs41_server_notify_highest_slotid_update(session
->clp
);
433 static int nfs41_sequence_done(struct rpc_task
*task
, struct nfs4_sequence_res
*res
)
435 struct nfs4_session
*session
;
436 struct nfs4_slot
*slot
;
437 struct nfs_client
*clp
;
438 bool interrupted
= false;
441 /* don't increment the sequence number if the task wasn't sent */
442 if (!RPC_WAS_SENT(task
))
446 session
= slot
->table
->session
;
448 if (slot
->interrupted
) {
449 slot
->interrupted
= 0;
453 /* Check the SEQUENCE operation status */
454 switch (res
->sr_status
) {
456 /* Update the slot's sequence and clientid lease timer */
459 do_renew_lease(clp
, res
->sr_timestamp
);
460 /* Check sequence flags */
461 if (res
->sr_status_flags
!= 0)
462 nfs4_schedule_lease_recovery(clp
);
463 nfs41_update_target_slotid(slot
->table
, slot
, res
);
467 * sr_status remains 1 if an RPC level error occurred.
468 * The server may or may not have processed the sequence
470 * Mark the slot as having hosted an interrupted RPC call.
472 slot
->interrupted
= 1;
475 /* The server detected a resend of the RPC call and
476 * returned NFS4ERR_DELAY as per Section 2.10.6.2
479 dprintk("%s: slot=%u seq=%u: Operation in progress\n",
484 case -NFS4ERR_BADSLOT
:
486 * The slot id we used was probably retired. Try again
487 * using a different slot id.
490 case -NFS4ERR_SEQ_MISORDERED
:
492 * Was the last operation on this sequence interrupted?
493 * If so, retry after bumping the sequence number.
500 * Could this slot have been previously retired?
501 * If so, then the server may be expecting seq_nr = 1!
503 if (slot
->seq_nr
!= 1) {
508 case -NFS4ERR_SEQ_FALSE_RETRY
:
512 /* Just update the slot sequence no. */
516 /* The session may be reset by one of the error handlers. */
517 dprintk("%s: Error %d free the slot \n", __func__
, res
->sr_status
);
518 nfs41_sequence_free_slot(res
);
521 if (rpc_restart_call_prepare(task
)) {
527 if (!rpc_restart_call(task
))
529 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
533 static int nfs4_sequence_done(struct rpc_task
*task
,
534 struct nfs4_sequence_res
*res
)
536 if (res
->sr_slot
== NULL
)
538 return nfs41_sequence_done(task
, res
);
541 static void nfs41_init_sequence(struct nfs4_sequence_args
*args
,
542 struct nfs4_sequence_res
*res
, int cache_reply
)
544 args
->sa_slot
= NULL
;
545 args
->sa_cache_this
= 0;
546 args
->sa_privileged
= 0;
548 args
->sa_cache_this
= 1;
552 static void nfs4_set_sequence_privileged(struct nfs4_sequence_args
*args
)
554 args
->sa_privileged
= 1;
557 int nfs41_setup_sequence(struct nfs4_session
*session
,
558 struct nfs4_sequence_args
*args
,
559 struct nfs4_sequence_res
*res
,
560 struct rpc_task
*task
)
562 struct nfs4_slot
*slot
;
563 struct nfs4_slot_table
*tbl
;
565 dprintk("--> %s\n", __func__
);
566 /* slot already allocated? */
567 if (res
->sr_slot
!= NULL
)
570 tbl
= &session
->fc_slot_table
;
572 task
->tk_timeout
= 0;
574 spin_lock(&tbl
->slot_tbl_lock
);
575 if (test_bit(NFS4_SLOT_TBL_DRAINING
, &tbl
->slot_tbl_state
) &&
576 !args
->sa_privileged
) {
577 /* The state manager will wait until the slot table is empty */
578 dprintk("%s session is draining\n", __func__
);
582 slot
= nfs4_alloc_slot(tbl
);
584 /* If out of memory, try again in 1/4 second */
585 if (slot
== ERR_PTR(-ENOMEM
))
586 task
->tk_timeout
= HZ
>> 2;
587 dprintk("<-- %s: no free slots\n", __func__
);
590 spin_unlock(&tbl
->slot_tbl_lock
);
592 args
->sa_slot
= slot
;
594 dprintk("<-- %s slotid=%d seqid=%d\n", __func__
,
595 slot
->slot_nr
, slot
->seq_nr
);
598 res
->sr_timestamp
= jiffies
;
599 res
->sr_status_flags
= 0;
601 * sr_status is only set in decode_sequence, and so will remain
602 * set to 1 if an rpc level failure occurs.
606 rpc_call_start(task
);
609 /* Privileged tasks are queued with top priority */
610 if (args
->sa_privileged
)
611 rpc_sleep_on_priority(&tbl
->slot_tbl_waitq
, task
,
612 NULL
, RPC_PRIORITY_PRIVILEGED
);
614 rpc_sleep_on(&tbl
->slot_tbl_waitq
, task
, NULL
);
615 spin_unlock(&tbl
->slot_tbl_lock
);
618 EXPORT_SYMBOL_GPL(nfs41_setup_sequence
);
620 int nfs4_setup_sequence(const struct nfs_server
*server
,
621 struct nfs4_sequence_args
*args
,
622 struct nfs4_sequence_res
*res
,
623 struct rpc_task
*task
)
625 struct nfs4_session
*session
= nfs4_get_session(server
);
628 if (session
== NULL
) {
629 rpc_call_start(task
);
633 dprintk("--> %s clp %p session %p sr_slot %d\n",
634 __func__
, session
->clp
, session
, res
->sr_slot
?
635 res
->sr_slot
->slot_nr
: -1);
637 ret
= nfs41_setup_sequence(session
, args
, res
, task
);
639 dprintk("<-- %s status=%d\n", __func__
, ret
);
643 struct nfs41_call_sync_data
{
644 const struct nfs_server
*seq_server
;
645 struct nfs4_sequence_args
*seq_args
;
646 struct nfs4_sequence_res
*seq_res
;
649 static void nfs41_call_sync_prepare(struct rpc_task
*task
, void *calldata
)
651 struct nfs41_call_sync_data
*data
= calldata
;
652 struct nfs4_session
*session
= nfs4_get_session(data
->seq_server
);
654 dprintk("--> %s data->seq_server %p\n", __func__
, data
->seq_server
);
656 nfs41_setup_sequence(session
, data
->seq_args
, data
->seq_res
, task
);
659 static void nfs41_call_sync_done(struct rpc_task
*task
, void *calldata
)
661 struct nfs41_call_sync_data
*data
= calldata
;
663 nfs41_sequence_done(task
, data
->seq_res
);
666 static const struct rpc_call_ops nfs41_call_sync_ops
= {
667 .rpc_call_prepare
= nfs41_call_sync_prepare
,
668 .rpc_call_done
= nfs41_call_sync_done
,
671 static int nfs4_call_sync_sequence(struct rpc_clnt
*clnt
,
672 struct nfs_server
*server
,
673 struct rpc_message
*msg
,
674 struct nfs4_sequence_args
*args
,
675 struct nfs4_sequence_res
*res
)
678 struct rpc_task
*task
;
679 struct nfs41_call_sync_data data
= {
680 .seq_server
= server
,
684 struct rpc_task_setup task_setup
= {
687 .callback_ops
= &nfs41_call_sync_ops
,
688 .callback_data
= &data
691 task
= rpc_run_task(&task_setup
);
695 ret
= task
->tk_status
;
703 void nfs41_init_sequence(struct nfs4_sequence_args
*args
,
704 struct nfs4_sequence_res
*res
, int cache_reply
)
708 static void nfs4_set_sequence_privileged(struct nfs4_sequence_args
*args
)
713 static int nfs4_sequence_done(struct rpc_task
*task
,
714 struct nfs4_sequence_res
*res
)
718 #endif /* CONFIG_NFS_V4_1 */
721 int _nfs4_call_sync(struct rpc_clnt
*clnt
,
722 struct nfs_server
*server
,
723 struct rpc_message
*msg
,
724 struct nfs4_sequence_args
*args
,
725 struct nfs4_sequence_res
*res
)
727 return rpc_call_sync(clnt
, msg
, 0);
731 int nfs4_call_sync(struct rpc_clnt
*clnt
,
732 struct nfs_server
*server
,
733 struct rpc_message
*msg
,
734 struct nfs4_sequence_args
*args
,
735 struct nfs4_sequence_res
*res
,
738 nfs41_init_sequence(args
, res
, cache_reply
);
739 return server
->nfs_client
->cl_mvops
->call_sync(clnt
, server
, msg
,
743 static void update_changeattr(struct inode
*dir
, struct nfs4_change_info
*cinfo
)
745 struct nfs_inode
*nfsi
= NFS_I(dir
);
747 spin_lock(&dir
->i_lock
);
748 nfsi
->cache_validity
|= NFS_INO_INVALID_ATTR
|NFS_INO_INVALID_DATA
;
749 if (!cinfo
->atomic
|| cinfo
->before
!= dir
->i_version
)
750 nfs_force_lookup_revalidate(dir
);
751 dir
->i_version
= cinfo
->after
;
752 nfs_fscache_invalidate(dir
);
753 spin_unlock(&dir
->i_lock
);
756 struct nfs4_opendata
{
758 struct nfs_openargs o_arg
;
759 struct nfs_openres o_res
;
760 struct nfs_open_confirmargs c_arg
;
761 struct nfs_open_confirmres c_res
;
762 struct nfs4_string owner_name
;
763 struct nfs4_string group_name
;
764 struct nfs_fattr f_attr
;
766 struct dentry
*dentry
;
767 struct nfs4_state_owner
*owner
;
768 struct nfs4_state
*state
;
770 unsigned long timestamp
;
771 unsigned int rpc_done
: 1;
772 unsigned int is_recover
: 1;
777 static bool nfs4_clear_cap_atomic_open_v1(struct nfs_server
*server
,
778 int err
, struct nfs4_exception
*exception
)
782 if (!(server
->caps
& NFS_CAP_ATOMIC_OPEN_V1
))
784 server
->caps
&= ~NFS_CAP_ATOMIC_OPEN_V1
;
785 exception
->retry
= 1;
789 static enum open_claim_type4
790 nfs4_map_atomic_open_claim(struct nfs_server
*server
,
791 enum open_claim_type4 claim
)
793 if (server
->caps
& NFS_CAP_ATOMIC_OPEN_V1
)
798 case NFS4_OPEN_CLAIM_FH
:
799 return NFS4_OPEN_CLAIM_NULL
;
800 case NFS4_OPEN_CLAIM_DELEG_CUR_FH
:
801 return NFS4_OPEN_CLAIM_DELEGATE_CUR
;
802 case NFS4_OPEN_CLAIM_DELEG_PREV_FH
:
803 return NFS4_OPEN_CLAIM_DELEGATE_PREV
;
807 static void nfs4_init_opendata_res(struct nfs4_opendata
*p
)
809 p
->o_res
.f_attr
= &p
->f_attr
;
810 p
->o_res
.seqid
= p
->o_arg
.seqid
;
811 p
->c_res
.seqid
= p
->c_arg
.seqid
;
812 p
->o_res
.server
= p
->o_arg
.server
;
813 p
->o_res
.access_request
= p
->o_arg
.access
;
814 nfs_fattr_init(&p
->f_attr
);
815 nfs_fattr_init_names(&p
->f_attr
, &p
->owner_name
, &p
->group_name
);
818 static struct nfs4_opendata
*nfs4_opendata_alloc(struct dentry
*dentry
,
819 struct nfs4_state_owner
*sp
, fmode_t fmode
, int flags
,
820 const struct iattr
*attrs
,
821 enum open_claim_type4 claim
,
824 struct dentry
*parent
= dget_parent(dentry
);
825 struct inode
*dir
= parent
->d_inode
;
826 struct nfs_server
*server
= NFS_SERVER(dir
);
827 struct nfs4_opendata
*p
;
829 p
= kzalloc(sizeof(*p
), gfp_mask
);
832 p
->o_arg
.seqid
= nfs_alloc_seqid(&sp
->so_seqid
, gfp_mask
);
833 if (p
->o_arg
.seqid
== NULL
)
835 nfs_sb_active(dentry
->d_sb
);
836 p
->dentry
= dget(dentry
);
839 atomic_inc(&sp
->so_count
);
840 p
->o_arg
.open_flags
= flags
;
841 p
->o_arg
.fmode
= fmode
& (FMODE_READ
|FMODE_WRITE
);
842 /* don't put an ACCESS op in OPEN compound if O_EXCL, because ACCESS
843 * will return permission denied for all bits until close */
844 if (!(flags
& O_EXCL
)) {
845 /* ask server to check for all possible rights as results
847 p
->o_arg
.access
= NFS4_ACCESS_READ
| NFS4_ACCESS_MODIFY
|
848 NFS4_ACCESS_EXTEND
| NFS4_ACCESS_EXECUTE
;
850 p
->o_arg
.clientid
= server
->nfs_client
->cl_clientid
;
851 p
->o_arg
.id
.create_time
= ktime_to_ns(sp
->so_seqid
.create_time
);
852 p
->o_arg
.id
.uniquifier
= sp
->so_seqid
.owner_id
;
853 p
->o_arg
.name
= &dentry
->d_name
;
854 p
->o_arg
.server
= server
;
855 p
->o_arg
.bitmask
= server
->attr_bitmask
;
856 p
->o_arg
.open_bitmap
= &nfs4_fattr_bitmap
[0];
857 p
->o_arg
.claim
= nfs4_map_atomic_open_claim(server
, claim
);
858 switch (p
->o_arg
.claim
) {
859 case NFS4_OPEN_CLAIM_NULL
:
860 case NFS4_OPEN_CLAIM_DELEGATE_CUR
:
861 case NFS4_OPEN_CLAIM_DELEGATE_PREV
:
862 p
->o_arg
.fh
= NFS_FH(dir
);
864 case NFS4_OPEN_CLAIM_PREVIOUS
:
865 case NFS4_OPEN_CLAIM_FH
:
866 case NFS4_OPEN_CLAIM_DELEG_CUR_FH
:
867 case NFS4_OPEN_CLAIM_DELEG_PREV_FH
:
868 p
->o_arg
.fh
= NFS_FH(dentry
->d_inode
);
870 if (attrs
!= NULL
&& attrs
->ia_valid
!= 0) {
873 p
->o_arg
.u
.attrs
= &p
->attrs
;
874 memcpy(&p
->attrs
, attrs
, sizeof(p
->attrs
));
877 verf
[1] = current
->pid
;
878 memcpy(p
->o_arg
.u
.verifier
.data
, verf
,
879 sizeof(p
->o_arg
.u
.verifier
.data
));
881 p
->c_arg
.fh
= &p
->o_res
.fh
;
882 p
->c_arg
.stateid
= &p
->o_res
.stateid
;
883 p
->c_arg
.seqid
= p
->o_arg
.seqid
;
884 nfs4_init_opendata_res(p
);
894 static void nfs4_opendata_free(struct kref
*kref
)
896 struct nfs4_opendata
*p
= container_of(kref
,
897 struct nfs4_opendata
, kref
);
898 struct super_block
*sb
= p
->dentry
->d_sb
;
900 nfs_free_seqid(p
->o_arg
.seqid
);
901 if (p
->state
!= NULL
)
902 nfs4_put_open_state(p
->state
);
903 nfs4_put_state_owner(p
->owner
);
907 nfs_fattr_free_names(&p
->f_attr
);
911 static void nfs4_opendata_put(struct nfs4_opendata
*p
)
914 kref_put(&p
->kref
, nfs4_opendata_free
);
917 static int nfs4_wait_for_completion_rpc_task(struct rpc_task
*task
)
921 ret
= rpc_wait_for_completion_task(task
);
925 static int can_open_cached(struct nfs4_state
*state
, fmode_t mode
, int open_mode
)
929 if (open_mode
& (O_EXCL
|O_TRUNC
))
931 switch (mode
& (FMODE_READ
|FMODE_WRITE
)) {
933 ret
|= test_bit(NFS_O_RDONLY_STATE
, &state
->flags
) != 0
934 && state
->n_rdonly
!= 0;
937 ret
|= test_bit(NFS_O_WRONLY_STATE
, &state
->flags
) != 0
938 && state
->n_wronly
!= 0;
940 case FMODE_READ
|FMODE_WRITE
:
941 ret
|= test_bit(NFS_O_RDWR_STATE
, &state
->flags
) != 0
942 && state
->n_rdwr
!= 0;
948 static int can_open_delegated(struct nfs_delegation
*delegation
, fmode_t fmode
)
950 if (delegation
== NULL
)
952 if ((delegation
->type
& fmode
) != fmode
)
954 if (test_bit(NFS_DELEGATION_NEED_RECLAIM
, &delegation
->flags
))
956 if (test_bit(NFS_DELEGATION_RETURNING
, &delegation
->flags
))
958 nfs_mark_delegation_referenced(delegation
);
962 static void update_open_stateflags(struct nfs4_state
*state
, fmode_t fmode
)
971 case FMODE_READ
|FMODE_WRITE
:
974 nfs4_state_set_mode_locked(state
, state
->state
| fmode
);
977 static void nfs_set_open_stateid_locked(struct nfs4_state
*state
, nfs4_stateid
*stateid
, fmode_t fmode
)
979 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0)
980 nfs4_stateid_copy(&state
->stateid
, stateid
);
981 nfs4_stateid_copy(&state
->open_stateid
, stateid
);
982 set_bit(NFS_OPEN_STATE
, &state
->flags
);
985 set_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
988 set_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
990 case FMODE_READ
|FMODE_WRITE
:
991 set_bit(NFS_O_RDWR_STATE
, &state
->flags
);
995 static void nfs_set_open_stateid(struct nfs4_state
*state
, nfs4_stateid
*stateid
, fmode_t fmode
)
997 write_seqlock(&state
->seqlock
);
998 nfs_set_open_stateid_locked(state
, stateid
, fmode
);
999 write_sequnlock(&state
->seqlock
);
1002 static void __update_open_stateid(struct nfs4_state
*state
, nfs4_stateid
*open_stateid
, const nfs4_stateid
*deleg_stateid
, fmode_t fmode
)
1005 * Protect the call to nfs4_state_set_mode_locked and
1006 * serialise the stateid update
1008 spin_lock(&state
->owner
->so_lock
);
1009 write_seqlock(&state
->seqlock
);
1010 if (deleg_stateid
!= NULL
) {
1011 nfs4_stateid_copy(&state
->stateid
, deleg_stateid
);
1012 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1014 if (open_stateid
!= NULL
)
1015 nfs_set_open_stateid_locked(state
, open_stateid
, fmode
);
1016 write_sequnlock(&state
->seqlock
);
1017 update_open_stateflags(state
, fmode
);
1018 spin_unlock(&state
->owner
->so_lock
);
1021 static int update_open_stateid(struct nfs4_state
*state
, nfs4_stateid
*open_stateid
, nfs4_stateid
*delegation
, fmode_t fmode
)
1023 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
1024 struct nfs_delegation
*deleg_cur
;
1027 fmode
&= (FMODE_READ
|FMODE_WRITE
);
1030 deleg_cur
= rcu_dereference(nfsi
->delegation
);
1031 if (deleg_cur
== NULL
)
1034 spin_lock(&deleg_cur
->lock
);
1035 if (nfsi
->delegation
!= deleg_cur
||
1036 test_bit(NFS_DELEGATION_RETURNING
, &deleg_cur
->flags
) ||
1037 (deleg_cur
->type
& fmode
) != fmode
)
1038 goto no_delegation_unlock
;
1040 if (delegation
== NULL
)
1041 delegation
= &deleg_cur
->stateid
;
1042 else if (!nfs4_stateid_match(&deleg_cur
->stateid
, delegation
))
1043 goto no_delegation_unlock
;
1045 nfs_mark_delegation_referenced(deleg_cur
);
1046 __update_open_stateid(state
, open_stateid
, &deleg_cur
->stateid
, fmode
);
1048 no_delegation_unlock
:
1049 spin_unlock(&deleg_cur
->lock
);
1053 if (!ret
&& open_stateid
!= NULL
) {
1054 __update_open_stateid(state
, open_stateid
, NULL
, fmode
);
1062 static void nfs4_return_incompatible_delegation(struct inode
*inode
, fmode_t fmode
)
1064 struct nfs_delegation
*delegation
;
1067 delegation
= rcu_dereference(NFS_I(inode
)->delegation
);
1068 if (delegation
== NULL
|| (delegation
->type
& fmode
) == fmode
) {
1073 nfs4_inode_return_delegation(inode
);
1076 static struct nfs4_state
*nfs4_try_open_cached(struct nfs4_opendata
*opendata
)
1078 struct nfs4_state
*state
= opendata
->state
;
1079 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
1080 struct nfs_delegation
*delegation
;
1081 int open_mode
= opendata
->o_arg
.open_flags
;
1082 fmode_t fmode
= opendata
->o_arg
.fmode
;
1083 nfs4_stateid stateid
;
1087 if (can_open_cached(state
, fmode
, open_mode
)) {
1088 spin_lock(&state
->owner
->so_lock
);
1089 if (can_open_cached(state
, fmode
, open_mode
)) {
1090 update_open_stateflags(state
, fmode
);
1091 spin_unlock(&state
->owner
->so_lock
);
1092 goto out_return_state
;
1094 spin_unlock(&state
->owner
->so_lock
);
1097 delegation
= rcu_dereference(nfsi
->delegation
);
1098 if (!can_open_delegated(delegation
, fmode
)) {
1102 /* Save the delegation */
1103 nfs4_stateid_copy(&stateid
, &delegation
->stateid
);
1105 nfs_release_seqid(opendata
->o_arg
.seqid
);
1106 if (!opendata
->is_recover
) {
1107 ret
= nfs_may_open(state
->inode
, state
->owner
->so_cred
, open_mode
);
1113 /* Try to update the stateid using the delegation */
1114 if (update_open_stateid(state
, NULL
, &stateid
, fmode
))
1115 goto out_return_state
;
1118 return ERR_PTR(ret
);
1120 atomic_inc(&state
->count
);
1125 nfs4_opendata_check_deleg(struct nfs4_opendata
*data
, struct nfs4_state
*state
)
1127 struct nfs_client
*clp
= NFS_SERVER(state
->inode
)->nfs_client
;
1128 struct nfs_delegation
*delegation
;
1129 int delegation_flags
= 0;
1132 delegation
= rcu_dereference(NFS_I(state
->inode
)->delegation
);
1134 delegation_flags
= delegation
->flags
;
1136 if (data
->o_arg
.claim
== NFS4_OPEN_CLAIM_DELEGATE_CUR
) {
1137 pr_err_ratelimited("NFS: Broken NFSv4 server %s is "
1138 "returning a delegation for "
1139 "OPEN(CLAIM_DELEGATE_CUR)\n",
1141 } else if ((delegation_flags
& 1UL<<NFS_DELEGATION_NEED_RECLAIM
) == 0)
1142 nfs_inode_set_delegation(state
->inode
,
1143 data
->owner
->so_cred
,
1146 nfs_inode_reclaim_delegation(state
->inode
,
1147 data
->owner
->so_cred
,
1152 * Check the inode attributes against the CLAIM_PREVIOUS returned attributes
1153 * and update the nfs4_state.
1155 static struct nfs4_state
*
1156 _nfs4_opendata_reclaim_to_nfs4_state(struct nfs4_opendata
*data
)
1158 struct inode
*inode
= data
->state
->inode
;
1159 struct nfs4_state
*state
= data
->state
;
1162 if (!data
->rpc_done
) {
1163 if (data
->rpc_status
) {
1164 ret
= data
->rpc_status
;
1167 /* cached opens have already been processed */
1171 ret
= nfs_refresh_inode(inode
, &data
->f_attr
);
1175 if (data
->o_res
.delegation_type
!= 0)
1176 nfs4_opendata_check_deleg(data
, state
);
1178 update_open_stateid(state
, &data
->o_res
.stateid
, NULL
,
1180 atomic_inc(&state
->count
);
1184 return ERR_PTR(ret
);
1188 static struct nfs4_state
*
1189 _nfs4_opendata_to_nfs4_state(struct nfs4_opendata
*data
)
1191 struct inode
*inode
;
1192 struct nfs4_state
*state
= NULL
;
1195 if (!data
->rpc_done
) {
1196 state
= nfs4_try_open_cached(data
);
1201 if (!(data
->f_attr
.valid
& NFS_ATTR_FATTR
))
1203 inode
= nfs_fhget(data
->dir
->d_sb
, &data
->o_res
.fh
, &data
->f_attr
);
1204 ret
= PTR_ERR(inode
);
1208 state
= nfs4_get_open_state(inode
, data
->owner
);
1211 if (data
->o_res
.delegation_type
!= 0)
1212 nfs4_opendata_check_deleg(data
, state
);
1213 update_open_stateid(state
, &data
->o_res
.stateid
, NULL
,
1217 nfs_release_seqid(data
->o_arg
.seqid
);
1222 return ERR_PTR(ret
);
1225 static struct nfs4_state
*
1226 nfs4_opendata_to_nfs4_state(struct nfs4_opendata
*data
)
1228 if (data
->o_arg
.claim
== NFS4_OPEN_CLAIM_PREVIOUS
)
1229 return _nfs4_opendata_reclaim_to_nfs4_state(data
);
1230 return _nfs4_opendata_to_nfs4_state(data
);
1233 static struct nfs_open_context
*nfs4_state_find_open_context(struct nfs4_state
*state
)
1235 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
1236 struct nfs_open_context
*ctx
;
1238 spin_lock(&state
->inode
->i_lock
);
1239 list_for_each_entry(ctx
, &nfsi
->open_files
, list
) {
1240 if (ctx
->state
!= state
)
1242 get_nfs_open_context(ctx
);
1243 spin_unlock(&state
->inode
->i_lock
);
1246 spin_unlock(&state
->inode
->i_lock
);
1247 return ERR_PTR(-ENOENT
);
1250 static struct nfs4_opendata
*nfs4_open_recoverdata_alloc(struct nfs_open_context
*ctx
,
1251 struct nfs4_state
*state
, enum open_claim_type4 claim
)
1253 struct nfs4_opendata
*opendata
;
1255 opendata
= nfs4_opendata_alloc(ctx
->dentry
, state
->owner
, 0, 0,
1256 NULL
, claim
, GFP_NOFS
);
1257 if (opendata
== NULL
)
1258 return ERR_PTR(-ENOMEM
);
1259 opendata
->state
= state
;
1260 atomic_inc(&state
->count
);
1264 static int nfs4_open_recover_helper(struct nfs4_opendata
*opendata
, fmode_t fmode
, struct nfs4_state
**res
)
1266 struct nfs4_state
*newstate
;
1269 opendata
->o_arg
.open_flags
= 0;
1270 opendata
->o_arg
.fmode
= fmode
;
1271 memset(&opendata
->o_res
, 0, sizeof(opendata
->o_res
));
1272 memset(&opendata
->c_res
, 0, sizeof(opendata
->c_res
));
1273 nfs4_init_opendata_res(opendata
);
1274 ret
= _nfs4_recover_proc_open(opendata
);
1277 newstate
= nfs4_opendata_to_nfs4_state(opendata
);
1278 if (IS_ERR(newstate
))
1279 return PTR_ERR(newstate
);
1280 nfs4_close_state(newstate
, fmode
);
1285 static int nfs4_open_recover(struct nfs4_opendata
*opendata
, struct nfs4_state
*state
)
1287 struct nfs4_state
*newstate
;
1290 /* memory barrier prior to reading state->n_* */
1291 clear_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1292 clear_bit(NFS_OPEN_STATE
, &state
->flags
);
1294 if (state
->n_rdwr
!= 0) {
1295 clear_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1296 ret
= nfs4_open_recover_helper(opendata
, FMODE_READ
|FMODE_WRITE
, &newstate
);
1299 if (newstate
!= state
)
1302 if (state
->n_wronly
!= 0) {
1303 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1304 ret
= nfs4_open_recover_helper(opendata
, FMODE_WRITE
, &newstate
);
1307 if (newstate
!= state
)
1310 if (state
->n_rdonly
!= 0) {
1311 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1312 ret
= nfs4_open_recover_helper(opendata
, FMODE_READ
, &newstate
);
1315 if (newstate
!= state
)
1319 * We may have performed cached opens for all three recoveries.
1320 * Check if we need to update the current stateid.
1322 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0 &&
1323 !nfs4_stateid_match(&state
->stateid
, &state
->open_stateid
)) {
1324 write_seqlock(&state
->seqlock
);
1325 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0)
1326 nfs4_stateid_copy(&state
->stateid
, &state
->open_stateid
);
1327 write_sequnlock(&state
->seqlock
);
1334 * reclaim state on the server after a reboot.
1336 static int _nfs4_do_open_reclaim(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1338 struct nfs_delegation
*delegation
;
1339 struct nfs4_opendata
*opendata
;
1340 fmode_t delegation_type
= 0;
1343 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
,
1344 NFS4_OPEN_CLAIM_PREVIOUS
);
1345 if (IS_ERR(opendata
))
1346 return PTR_ERR(opendata
);
1348 delegation
= rcu_dereference(NFS_I(state
->inode
)->delegation
);
1349 if (delegation
!= NULL
&& test_bit(NFS_DELEGATION_NEED_RECLAIM
, &delegation
->flags
) != 0)
1350 delegation_type
= delegation
->type
;
1352 opendata
->o_arg
.u
.delegation_type
= delegation_type
;
1353 status
= nfs4_open_recover(opendata
, state
);
1354 nfs4_opendata_put(opendata
);
1358 static int nfs4_do_open_reclaim(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1360 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1361 struct nfs4_exception exception
= { };
1364 err
= _nfs4_do_open_reclaim(ctx
, state
);
1365 if (nfs4_clear_cap_atomic_open_v1(server
, err
, &exception
))
1367 if (err
!= -NFS4ERR_DELAY
)
1369 nfs4_handle_exception(server
, err
, &exception
);
1370 } while (exception
.retry
);
1374 static int nfs4_open_reclaim(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
1376 struct nfs_open_context
*ctx
;
1379 ctx
= nfs4_state_find_open_context(state
);
1382 ret
= nfs4_do_open_reclaim(ctx
, state
);
1383 put_nfs_open_context(ctx
);
1387 static int nfs4_handle_delegation_recall_error(struct nfs_server
*server
, struct nfs4_state
*state
, const nfs4_stateid
*stateid
, int err
)
1391 printk(KERN_ERR
"NFS: %s: unhandled error "
1392 "%d.\n", __func__
, err
);
1397 case -NFS4ERR_BADSESSION
:
1398 case -NFS4ERR_BADSLOT
:
1399 case -NFS4ERR_BAD_HIGH_SLOT
:
1400 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
1401 case -NFS4ERR_DEADSESSION
:
1402 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1403 nfs4_schedule_session_recovery(server
->nfs_client
->cl_session
, err
);
1405 case -NFS4ERR_STALE_CLIENTID
:
1406 case -NFS4ERR_STALE_STATEID
:
1407 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1408 case -NFS4ERR_EXPIRED
:
1409 /* Don't recall a delegation if it was lost */
1410 nfs4_schedule_lease_recovery(server
->nfs_client
);
1412 case -NFS4ERR_DELEG_REVOKED
:
1413 case -NFS4ERR_ADMIN_REVOKED
:
1414 case -NFS4ERR_BAD_STATEID
:
1415 case -NFS4ERR_OPENMODE
:
1416 nfs_inode_find_state_and_recover(state
->inode
,
1418 nfs4_schedule_stateid_recovery(server
, state
);
1420 case -NFS4ERR_DELAY
:
1421 case -NFS4ERR_GRACE
:
1422 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1426 case -NFS4ERR_DENIED
:
1427 /* kill_proc(fl->fl_pid, SIGLOST, 1); */
1433 int nfs4_open_delegation_recall(struct nfs_open_context
*ctx
, struct nfs4_state
*state
, const nfs4_stateid
*stateid
)
1435 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1436 struct nfs4_opendata
*opendata
;
1439 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
,
1440 NFS4_OPEN_CLAIM_DELEG_CUR_FH
);
1441 if (IS_ERR(opendata
))
1442 return PTR_ERR(opendata
);
1443 nfs4_stateid_copy(&opendata
->o_arg
.u
.delegation
, stateid
);
1444 err
= nfs4_open_recover(opendata
, state
);
1445 nfs4_opendata_put(opendata
);
1446 return nfs4_handle_delegation_recall_error(server
, state
, stateid
, err
);
1449 static void nfs4_open_confirm_done(struct rpc_task
*task
, void *calldata
)
1451 struct nfs4_opendata
*data
= calldata
;
1453 data
->rpc_status
= task
->tk_status
;
1454 if (data
->rpc_status
== 0) {
1455 nfs4_stateid_copy(&data
->o_res
.stateid
, &data
->c_res
.stateid
);
1456 nfs_confirm_seqid(&data
->owner
->so_seqid
, 0);
1457 renew_lease(data
->o_res
.server
, data
->timestamp
);
1462 static void nfs4_open_confirm_release(void *calldata
)
1464 struct nfs4_opendata
*data
= calldata
;
1465 struct nfs4_state
*state
= NULL
;
1467 /* If this request hasn't been cancelled, do nothing */
1468 if (data
->cancelled
== 0)
1470 /* In case of error, no cleanup! */
1471 if (!data
->rpc_done
)
1473 state
= nfs4_opendata_to_nfs4_state(data
);
1475 nfs4_close_state(state
, data
->o_arg
.fmode
);
1477 nfs4_opendata_put(data
);
1480 static const struct rpc_call_ops nfs4_open_confirm_ops
= {
1481 .rpc_call_done
= nfs4_open_confirm_done
,
1482 .rpc_release
= nfs4_open_confirm_release
,
1486 * Note: On error, nfs4_proc_open_confirm will free the struct nfs4_opendata
1488 static int _nfs4_proc_open_confirm(struct nfs4_opendata
*data
)
1490 struct nfs_server
*server
= NFS_SERVER(data
->dir
->d_inode
);
1491 struct rpc_task
*task
;
1492 struct rpc_message msg
= {
1493 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_CONFIRM
],
1494 .rpc_argp
= &data
->c_arg
,
1495 .rpc_resp
= &data
->c_res
,
1496 .rpc_cred
= data
->owner
->so_cred
,
1498 struct rpc_task_setup task_setup_data
= {
1499 .rpc_client
= server
->client
,
1500 .rpc_message
= &msg
,
1501 .callback_ops
= &nfs4_open_confirm_ops
,
1502 .callback_data
= data
,
1503 .workqueue
= nfsiod_workqueue
,
1504 .flags
= RPC_TASK_ASYNC
,
1508 kref_get(&data
->kref
);
1510 data
->rpc_status
= 0;
1511 data
->timestamp
= jiffies
;
1512 task
= rpc_run_task(&task_setup_data
);
1514 return PTR_ERR(task
);
1515 status
= nfs4_wait_for_completion_rpc_task(task
);
1517 data
->cancelled
= 1;
1520 status
= data
->rpc_status
;
1525 static void nfs4_open_prepare(struct rpc_task
*task
, void *calldata
)
1527 struct nfs4_opendata
*data
= calldata
;
1528 struct nfs4_state_owner
*sp
= data
->owner
;
1529 struct nfs_client
*clp
= sp
->so_server
->nfs_client
;
1531 if (nfs_wait_on_sequence(data
->o_arg
.seqid
, task
) != 0)
1534 * Check if we still need to send an OPEN call, or if we can use
1535 * a delegation instead.
1537 if (data
->state
!= NULL
) {
1538 struct nfs_delegation
*delegation
;
1540 if (can_open_cached(data
->state
, data
->o_arg
.fmode
, data
->o_arg
.open_flags
))
1543 delegation
= rcu_dereference(NFS_I(data
->state
->inode
)->delegation
);
1544 if (data
->o_arg
.claim
!= NFS4_OPEN_CLAIM_DELEGATE_CUR
&&
1545 data
->o_arg
.claim
!= NFS4_OPEN_CLAIM_DELEG_CUR_FH
&&
1546 can_open_delegated(delegation
, data
->o_arg
.fmode
))
1547 goto unlock_no_action
;
1550 /* Update client id. */
1551 data
->o_arg
.clientid
= clp
->cl_clientid
;
1552 switch (data
->o_arg
.claim
) {
1553 case NFS4_OPEN_CLAIM_PREVIOUS
:
1554 case NFS4_OPEN_CLAIM_DELEG_CUR_FH
:
1555 case NFS4_OPEN_CLAIM_DELEG_PREV_FH
:
1556 data
->o_arg
.open_bitmap
= &nfs4_open_noattr_bitmap
[0];
1557 case NFS4_OPEN_CLAIM_FH
:
1558 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_NOATTR
];
1559 nfs_copy_fh(&data
->o_res
.fh
, data
->o_arg
.fh
);
1561 data
->timestamp
= jiffies
;
1562 if (nfs4_setup_sequence(data
->o_arg
.server
,
1563 &data
->o_arg
.seq_args
,
1564 &data
->o_res
.seq_res
,
1566 nfs_release_seqid(data
->o_arg
.seqid
);
1568 /* Set the create mode (note dependency on the session type) */
1569 data
->o_arg
.createmode
= NFS4_CREATE_UNCHECKED
;
1570 if (data
->o_arg
.open_flags
& O_EXCL
) {
1571 data
->o_arg
.createmode
= NFS4_CREATE_EXCLUSIVE
;
1572 if (nfs4_has_persistent_session(clp
))
1573 data
->o_arg
.createmode
= NFS4_CREATE_GUARDED
;
1574 else if (clp
->cl_mvops
->minor_version
> 0)
1575 data
->o_arg
.createmode
= NFS4_CREATE_EXCLUSIVE4_1
;
1581 task
->tk_action
= NULL
;
1583 nfs4_sequence_done(task
, &data
->o_res
.seq_res
);
1586 static void nfs4_open_done(struct rpc_task
*task
, void *calldata
)
1588 struct nfs4_opendata
*data
= calldata
;
1590 data
->rpc_status
= task
->tk_status
;
1592 if (!nfs4_sequence_done(task
, &data
->o_res
.seq_res
))
1595 if (task
->tk_status
== 0) {
1596 if (data
->o_res
.f_attr
->valid
& NFS_ATTR_FATTR_TYPE
) {
1597 switch (data
->o_res
.f_attr
->mode
& S_IFMT
) {
1601 data
->rpc_status
= -ELOOP
;
1604 data
->rpc_status
= -EISDIR
;
1607 data
->rpc_status
= -ENOTDIR
;
1610 renew_lease(data
->o_res
.server
, data
->timestamp
);
1611 if (!(data
->o_res
.rflags
& NFS4_OPEN_RESULT_CONFIRM
))
1612 nfs_confirm_seqid(&data
->owner
->so_seqid
, 0);
1617 static void nfs4_open_release(void *calldata
)
1619 struct nfs4_opendata
*data
= calldata
;
1620 struct nfs4_state
*state
= NULL
;
1622 /* If this request hasn't been cancelled, do nothing */
1623 if (data
->cancelled
== 0)
1625 /* In case of error, no cleanup! */
1626 if (data
->rpc_status
!= 0 || !data
->rpc_done
)
1628 /* In case we need an open_confirm, no cleanup! */
1629 if (data
->o_res
.rflags
& NFS4_OPEN_RESULT_CONFIRM
)
1631 state
= nfs4_opendata_to_nfs4_state(data
);
1633 nfs4_close_state(state
, data
->o_arg
.fmode
);
1635 nfs4_opendata_put(data
);
1638 static const struct rpc_call_ops nfs4_open_ops
= {
1639 .rpc_call_prepare
= nfs4_open_prepare
,
1640 .rpc_call_done
= nfs4_open_done
,
1641 .rpc_release
= nfs4_open_release
,
1644 static int nfs4_run_open_task(struct nfs4_opendata
*data
, int isrecover
)
1646 struct inode
*dir
= data
->dir
->d_inode
;
1647 struct nfs_server
*server
= NFS_SERVER(dir
);
1648 struct nfs_openargs
*o_arg
= &data
->o_arg
;
1649 struct nfs_openres
*o_res
= &data
->o_res
;
1650 struct rpc_task
*task
;
1651 struct rpc_message msg
= {
1652 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN
],
1655 .rpc_cred
= data
->owner
->so_cred
,
1657 struct rpc_task_setup task_setup_data
= {
1658 .rpc_client
= server
->client
,
1659 .rpc_message
= &msg
,
1660 .callback_ops
= &nfs4_open_ops
,
1661 .callback_data
= data
,
1662 .workqueue
= nfsiod_workqueue
,
1663 .flags
= RPC_TASK_ASYNC
,
1667 nfs41_init_sequence(&o_arg
->seq_args
, &o_res
->seq_res
, 1);
1668 kref_get(&data
->kref
);
1670 data
->rpc_status
= 0;
1671 data
->cancelled
= 0;
1672 data
->is_recover
= 0;
1674 nfs4_set_sequence_privileged(&o_arg
->seq_args
);
1675 data
->is_recover
= 1;
1677 task
= rpc_run_task(&task_setup_data
);
1679 return PTR_ERR(task
);
1680 status
= nfs4_wait_for_completion_rpc_task(task
);
1682 data
->cancelled
= 1;
1685 status
= data
->rpc_status
;
1691 static int _nfs4_recover_proc_open(struct nfs4_opendata
*data
)
1693 struct inode
*dir
= data
->dir
->d_inode
;
1694 struct nfs_openres
*o_res
= &data
->o_res
;
1697 status
= nfs4_run_open_task(data
, 1);
1698 if (status
!= 0 || !data
->rpc_done
)
1701 nfs_fattr_map_and_free_names(NFS_SERVER(dir
), &data
->f_attr
);
1703 if (o_res
->rflags
& NFS4_OPEN_RESULT_CONFIRM
) {
1704 status
= _nfs4_proc_open_confirm(data
);
1712 static int nfs4_opendata_access(struct rpc_cred
*cred
,
1713 struct nfs4_opendata
*opendata
,
1714 struct nfs4_state
*state
, fmode_t fmode
,
1717 struct nfs_access_entry cache
;
1720 /* access call failed or for some reason the server doesn't
1721 * support any access modes -- defer access call until later */
1722 if (opendata
->o_res
.access_supported
== 0)
1726 /* don't check MAY_WRITE - a newly created file may not have
1727 * write mode bits, but POSIX allows the creating process to write.
1728 * use openflags to check for exec, because fmode won't
1729 * always have FMODE_EXEC set when file open for exec. */
1730 if (openflags
& __FMODE_EXEC
) {
1731 /* ONLY check for exec rights */
1733 } else if (fmode
& FMODE_READ
)
1737 cache
.jiffies
= jiffies
;
1738 nfs_access_set_mask(&cache
, opendata
->o_res
.access_result
);
1739 nfs_access_add_cache(state
->inode
, &cache
);
1741 if ((mask
& ~cache
.mask
& (MAY_READ
| MAY_EXEC
)) == 0)
1744 /* even though OPEN succeeded, access is denied. Close the file */
1745 nfs4_close_state(state
, fmode
);
1750 * Note: On error, nfs4_proc_open will free the struct nfs4_opendata
1752 static int _nfs4_proc_open(struct nfs4_opendata
*data
)
1754 struct inode
*dir
= data
->dir
->d_inode
;
1755 struct nfs_server
*server
= NFS_SERVER(dir
);
1756 struct nfs_openargs
*o_arg
= &data
->o_arg
;
1757 struct nfs_openres
*o_res
= &data
->o_res
;
1760 status
= nfs4_run_open_task(data
, 0);
1761 if (!data
->rpc_done
)
1764 if (status
== -NFS4ERR_BADNAME
&&
1765 !(o_arg
->open_flags
& O_CREAT
))
1770 nfs_fattr_map_and_free_names(server
, &data
->f_attr
);
1772 if (o_arg
->open_flags
& O_CREAT
)
1773 update_changeattr(dir
, &o_res
->cinfo
);
1774 if ((o_res
->rflags
& NFS4_OPEN_RESULT_LOCKTYPE_POSIX
) == 0)
1775 server
->caps
&= ~NFS_CAP_POSIX_LOCK
;
1776 if(o_res
->rflags
& NFS4_OPEN_RESULT_CONFIRM
) {
1777 status
= _nfs4_proc_open_confirm(data
);
1781 if (!(o_res
->f_attr
->valid
& NFS_ATTR_FATTR
))
1782 _nfs4_proc_getattr(server
, &o_res
->fh
, o_res
->f_attr
);
1786 static int nfs4_recover_expired_lease(struct nfs_server
*server
)
1788 return nfs4_client_recover_expired_lease(server
->nfs_client
);
1793 * reclaim state on the server after a network partition.
1794 * Assumes caller holds the appropriate lock
1796 static int _nfs4_open_expired(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1798 struct nfs4_opendata
*opendata
;
1801 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
,
1802 NFS4_OPEN_CLAIM_FH
);
1803 if (IS_ERR(opendata
))
1804 return PTR_ERR(opendata
);
1805 ret
= nfs4_open_recover(opendata
, state
);
1807 d_drop(ctx
->dentry
);
1808 nfs4_opendata_put(opendata
);
1812 static int nfs4_do_open_expired(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1814 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1815 struct nfs4_exception exception
= { };
1819 err
= _nfs4_open_expired(ctx
, state
);
1820 if (nfs4_clear_cap_atomic_open_v1(server
, err
, &exception
))
1825 case -NFS4ERR_GRACE
:
1826 case -NFS4ERR_DELAY
:
1827 nfs4_handle_exception(server
, err
, &exception
);
1830 } while (exception
.retry
);
1835 static int nfs4_open_expired(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
1837 struct nfs_open_context
*ctx
;
1840 ctx
= nfs4_state_find_open_context(state
);
1843 ret
= nfs4_do_open_expired(ctx
, state
);
1844 put_nfs_open_context(ctx
);
1848 static void nfs_finish_clear_delegation_stateid(struct nfs4_state
*state
)
1850 nfs_remove_bad_delegation(state
->inode
);
1851 write_seqlock(&state
->seqlock
);
1852 nfs4_stateid_copy(&state
->stateid
, &state
->open_stateid
);
1853 write_sequnlock(&state
->seqlock
);
1854 clear_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1857 static void nfs40_clear_delegation_stateid(struct nfs4_state
*state
)
1859 if (rcu_access_pointer(NFS_I(state
->inode
)->delegation
) != NULL
)
1860 nfs_finish_clear_delegation_stateid(state
);
1863 static int nfs40_open_expired(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
1865 /* NFSv4.0 doesn't allow for delegation recovery on open expire */
1866 nfs40_clear_delegation_stateid(state
);
1867 return nfs4_open_expired(sp
, state
);
1870 #if defined(CONFIG_NFS_V4_1)
1871 static void nfs41_clear_delegation_stateid(struct nfs4_state
*state
)
1873 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1874 nfs4_stateid
*stateid
= &state
->stateid
;
1877 /* If a state reset has been done, test_stateid is unneeded */
1878 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0)
1881 status
= nfs41_test_stateid(server
, stateid
);
1882 if (status
!= NFS_OK
) {
1883 /* Free the stateid unless the server explicitly
1884 * informs us the stateid is unrecognized. */
1885 if (status
!= -NFS4ERR_BAD_STATEID
)
1886 nfs41_free_stateid(server
, stateid
);
1887 nfs_remove_bad_delegation(state
->inode
);
1889 write_seqlock(&state
->seqlock
);
1890 nfs4_stateid_copy(&state
->stateid
, &state
->open_stateid
);
1891 write_sequnlock(&state
->seqlock
);
1892 clear_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1897 * nfs41_check_open_stateid - possibly free an open stateid
1899 * @state: NFSv4 state for an inode
1901 * Returns NFS_OK if recovery for this stateid is now finished.
1902 * Otherwise a negative NFS4ERR value is returned.
1904 static int nfs41_check_open_stateid(struct nfs4_state
*state
)
1906 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1907 nfs4_stateid
*stateid
= &state
->open_stateid
;
1910 /* If a state reset has been done, test_stateid is unneeded */
1911 if ((test_bit(NFS_O_RDONLY_STATE
, &state
->flags
) == 0) &&
1912 (test_bit(NFS_O_WRONLY_STATE
, &state
->flags
) == 0) &&
1913 (test_bit(NFS_O_RDWR_STATE
, &state
->flags
) == 0))
1914 return -NFS4ERR_BAD_STATEID
;
1916 status
= nfs41_test_stateid(server
, stateid
);
1917 if (status
!= NFS_OK
) {
1918 /* Free the stateid unless the server explicitly
1919 * informs us the stateid is unrecognized. */
1920 if (status
!= -NFS4ERR_BAD_STATEID
)
1921 nfs41_free_stateid(server
, stateid
);
1923 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1924 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1925 clear_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1926 clear_bit(NFS_OPEN_STATE
, &state
->flags
);
1931 static int nfs41_open_expired(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
1935 nfs41_clear_delegation_stateid(state
);
1936 status
= nfs41_check_open_stateid(state
);
1937 if (status
!= NFS_OK
)
1938 status
= nfs4_open_expired(sp
, state
);
1944 * on an EXCLUSIVE create, the server should send back a bitmask with FATTR4-*
1945 * fields corresponding to attributes that were used to store the verifier.
1946 * Make sure we clobber those fields in the later setattr call
1948 static inline void nfs4_exclusive_attrset(struct nfs4_opendata
*opendata
, struct iattr
*sattr
)
1950 if ((opendata
->o_res
.attrset
[1] & FATTR4_WORD1_TIME_ACCESS
) &&
1951 !(sattr
->ia_valid
& ATTR_ATIME_SET
))
1952 sattr
->ia_valid
|= ATTR_ATIME
;
1954 if ((opendata
->o_res
.attrset
[1] & FATTR4_WORD1_TIME_MODIFY
) &&
1955 !(sattr
->ia_valid
& ATTR_MTIME_SET
))
1956 sattr
->ia_valid
|= ATTR_MTIME
;
1959 static int _nfs4_open_and_get_state(struct nfs4_opendata
*opendata
,
1962 struct nfs4_state
**res
)
1964 struct nfs4_state_owner
*sp
= opendata
->owner
;
1965 struct nfs_server
*server
= sp
->so_server
;
1966 struct nfs4_state
*state
;
1970 seq
= raw_seqcount_begin(&sp
->so_reclaim_seqcount
);
1972 ret
= _nfs4_proc_open(opendata
);
1976 state
= nfs4_opendata_to_nfs4_state(opendata
);
1977 ret
= PTR_ERR(state
);
1980 if (server
->caps
& NFS_CAP_POSIX_LOCK
)
1981 set_bit(NFS_STATE_POSIX_LOCKS
, &state
->flags
);
1983 ret
= nfs4_opendata_access(sp
->so_cred
, opendata
, state
, fmode
, flags
);
1987 if (read_seqcount_retry(&sp
->so_reclaim_seqcount
, seq
))
1988 nfs4_schedule_stateid_recovery(server
, state
);
1995 * Returns a referenced nfs4_state
1997 static int _nfs4_do_open(struct inode
*dir
,
1998 struct dentry
*dentry
,
2001 struct iattr
*sattr
,
2002 struct rpc_cred
*cred
,
2003 struct nfs4_state
**res
,
2004 struct nfs4_threshold
**ctx_th
)
2006 struct nfs4_state_owner
*sp
;
2007 struct nfs4_state
*state
= NULL
;
2008 struct nfs_server
*server
= NFS_SERVER(dir
);
2009 struct nfs4_opendata
*opendata
;
2010 enum open_claim_type4 claim
= NFS4_OPEN_CLAIM_NULL
;
2013 /* Protect against reboot recovery conflicts */
2015 sp
= nfs4_get_state_owner(server
, cred
, GFP_KERNEL
);
2017 dprintk("nfs4_do_open: nfs4_get_state_owner failed!\n");
2020 status
= nfs4_recover_expired_lease(server
);
2022 goto err_put_state_owner
;
2023 if (dentry
->d_inode
!= NULL
)
2024 nfs4_return_incompatible_delegation(dentry
->d_inode
, fmode
);
2026 if (dentry
->d_inode
)
2027 claim
= NFS4_OPEN_CLAIM_FH
;
2028 opendata
= nfs4_opendata_alloc(dentry
, sp
, fmode
, flags
, sattr
,
2030 if (opendata
== NULL
)
2031 goto err_put_state_owner
;
2033 if (ctx_th
&& server
->attr_bitmask
[2] & FATTR4_WORD2_MDSTHRESHOLD
) {
2034 opendata
->f_attr
.mdsthreshold
= pnfs_mdsthreshold_alloc();
2035 if (!opendata
->f_attr
.mdsthreshold
)
2036 goto err_opendata_put
;
2037 opendata
->o_arg
.open_bitmap
= &nfs4_pnfs_open_bitmap
[0];
2039 if (dentry
->d_inode
!= NULL
)
2040 opendata
->state
= nfs4_get_open_state(dentry
->d_inode
, sp
);
2042 status
= _nfs4_open_and_get_state(opendata
, fmode
, flags
, &state
);
2044 goto err_opendata_put
;
2046 if ((opendata
->o_arg
.open_flags
& (O_CREAT
|O_EXCL
)) == (O_CREAT
|O_EXCL
) &&
2047 (opendata
->o_arg
.createmode
!= NFS4_CREATE_GUARDED
)) {
2048 nfs4_exclusive_attrset(opendata
, sattr
);
2050 nfs_fattr_init(opendata
->o_res
.f_attr
);
2051 status
= nfs4_do_setattr(state
->inode
, cred
,
2052 opendata
->o_res
.f_attr
, sattr
,
2055 nfs_setattr_update_inode(state
->inode
, sattr
);
2056 nfs_post_op_update_inode(state
->inode
, opendata
->o_res
.f_attr
);
2059 if (pnfs_use_threshold(ctx_th
, opendata
->f_attr
.mdsthreshold
, server
))
2060 *ctx_th
= opendata
->f_attr
.mdsthreshold
;
2062 kfree(opendata
->f_attr
.mdsthreshold
);
2063 opendata
->f_attr
.mdsthreshold
= NULL
;
2065 nfs4_opendata_put(opendata
);
2066 nfs4_put_state_owner(sp
);
2070 kfree(opendata
->f_attr
.mdsthreshold
);
2071 nfs4_opendata_put(opendata
);
2072 err_put_state_owner
:
2073 nfs4_put_state_owner(sp
);
2080 static struct nfs4_state
*nfs4_do_open(struct inode
*dir
,
2081 struct dentry
*dentry
,
2084 struct iattr
*sattr
,
2085 struct rpc_cred
*cred
,
2086 struct nfs4_threshold
**ctx_th
)
2088 struct nfs_server
*server
= NFS_SERVER(dir
);
2089 struct nfs4_exception exception
= { };
2090 struct nfs4_state
*res
;
2093 fmode
&= FMODE_READ
|FMODE_WRITE
|FMODE_EXEC
;
2095 status
= _nfs4_do_open(dir
, dentry
, fmode
, flags
, sattr
, cred
,
2099 /* NOTE: BAD_SEQID means the server and client disagree about the
2100 * book-keeping w.r.t. state-changing operations
2101 * (OPEN/CLOSE/LOCK/LOCKU...)
2102 * It is actually a sign of a bug on the client or on the server.
2104 * If we receive a BAD_SEQID error in the particular case of
2105 * doing an OPEN, we assume that nfs_increment_open_seqid() will
2106 * have unhashed the old state_owner for us, and that we can
2107 * therefore safely retry using a new one. We should still warn
2108 * the user though...
2110 if (status
== -NFS4ERR_BAD_SEQID
) {
2111 pr_warn_ratelimited("NFS: v4 server %s "
2112 " returned a bad sequence-id error!\n",
2113 NFS_SERVER(dir
)->nfs_client
->cl_hostname
);
2114 exception
.retry
= 1;
2118 * BAD_STATEID on OPEN means that the server cancelled our
2119 * state before it received the OPEN_CONFIRM.
2120 * Recover by retrying the request as per the discussion
2121 * on Page 181 of RFC3530.
2123 if (status
== -NFS4ERR_BAD_STATEID
) {
2124 exception
.retry
= 1;
2127 if (status
== -EAGAIN
) {
2128 /* We must have found a delegation */
2129 exception
.retry
= 1;
2132 if (nfs4_clear_cap_atomic_open_v1(server
, status
, &exception
))
2134 res
= ERR_PTR(nfs4_handle_exception(server
,
2135 status
, &exception
));
2136 } while (exception
.retry
);
2140 static int _nfs4_do_setattr(struct inode
*inode
, struct rpc_cred
*cred
,
2141 struct nfs_fattr
*fattr
, struct iattr
*sattr
,
2142 struct nfs4_state
*state
)
2144 struct nfs_server
*server
= NFS_SERVER(inode
);
2145 struct nfs_setattrargs arg
= {
2146 .fh
= NFS_FH(inode
),
2149 .bitmask
= server
->attr_bitmask
,
2151 struct nfs_setattrres res
= {
2155 struct rpc_message msg
= {
2156 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETATTR
],
2161 unsigned long timestamp
= jiffies
;
2166 nfs_fattr_init(fattr
);
2168 /* Servers should only apply open mode checks for file size changes */
2169 truncate
= (sattr
->ia_valid
& ATTR_SIZE
) ? true : false;
2170 fmode
= truncate
? FMODE_WRITE
: FMODE_READ
;
2172 if (nfs4_copy_delegation_stateid(&arg
.stateid
, inode
, fmode
)) {
2173 /* Use that stateid */
2174 } else if (truncate
&& state
!= NULL
&& nfs4_valid_open_stateid(state
)) {
2175 struct nfs_lockowner lockowner
= {
2176 .l_owner
= current
->files
,
2177 .l_pid
= current
->tgid
,
2179 nfs4_select_rw_stateid(&arg
.stateid
, state
, FMODE_WRITE
,
2182 nfs4_stateid_copy(&arg
.stateid
, &zero_stateid
);
2184 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
2185 if (status
== 0 && state
!= NULL
)
2186 renew_lease(server
, timestamp
);
2190 static int nfs4_do_setattr(struct inode
*inode
, struct rpc_cred
*cred
,
2191 struct nfs_fattr
*fattr
, struct iattr
*sattr
,
2192 struct nfs4_state
*state
)
2194 struct nfs_server
*server
= NFS_SERVER(inode
);
2195 struct nfs4_exception exception
= {
2201 err
= _nfs4_do_setattr(inode
, cred
, fattr
, sattr
, state
);
2203 case -NFS4ERR_OPENMODE
:
2204 if (!(sattr
->ia_valid
& ATTR_SIZE
)) {
2205 pr_warn_once("NFSv4: server %s is incorrectly "
2206 "applying open mode checks to "
2207 "a SETATTR that is not "
2208 "changing file size.\n",
2209 server
->nfs_client
->cl_hostname
);
2211 if (state
&& !(state
->state
& FMODE_WRITE
)) {
2213 if (sattr
->ia_valid
& ATTR_OPEN
)
2218 err
= nfs4_handle_exception(server
, err
, &exception
);
2219 } while (exception
.retry
);
2224 struct nfs4_closedata
{
2225 struct inode
*inode
;
2226 struct nfs4_state
*state
;
2227 struct nfs_closeargs arg
;
2228 struct nfs_closeres res
;
2229 struct nfs_fattr fattr
;
2230 unsigned long timestamp
;
2235 static void nfs4_free_closedata(void *data
)
2237 struct nfs4_closedata
*calldata
= data
;
2238 struct nfs4_state_owner
*sp
= calldata
->state
->owner
;
2239 struct super_block
*sb
= calldata
->state
->inode
->i_sb
;
2242 pnfs_roc_release(calldata
->state
->inode
);
2243 nfs4_put_open_state(calldata
->state
);
2244 nfs_free_seqid(calldata
->arg
.seqid
);
2245 nfs4_put_state_owner(sp
);
2246 nfs_sb_deactive(sb
);
2250 static void nfs4_close_clear_stateid_flags(struct nfs4_state
*state
,
2253 spin_lock(&state
->owner
->so_lock
);
2254 clear_bit(NFS_O_RDWR_STATE
, &state
->flags
);
2255 switch (fmode
& (FMODE_READ
|FMODE_WRITE
)) {
2257 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
2260 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
2263 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
2264 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
2265 clear_bit(NFS_OPEN_STATE
, &state
->flags
);
2267 spin_unlock(&state
->owner
->so_lock
);
2270 static void nfs4_close_done(struct rpc_task
*task
, void *data
)
2272 struct nfs4_closedata
*calldata
= data
;
2273 struct nfs4_state
*state
= calldata
->state
;
2274 struct nfs_server
*server
= NFS_SERVER(calldata
->inode
);
2276 dprintk("%s: begin!\n", __func__
);
2277 if (!nfs4_sequence_done(task
, &calldata
->res
.seq_res
))
2279 /* hmm. we are done with the inode, and in the process of freeing
2280 * the state_owner. we keep this around to process errors
2282 switch (task
->tk_status
) {
2285 pnfs_roc_set_barrier(state
->inode
,
2286 calldata
->roc_barrier
);
2287 nfs_set_open_stateid(state
, &calldata
->res
.stateid
, 0);
2288 renew_lease(server
, calldata
->timestamp
);
2289 nfs4_close_clear_stateid_flags(state
,
2290 calldata
->arg
.fmode
);
2292 case -NFS4ERR_STALE_STATEID
:
2293 case -NFS4ERR_OLD_STATEID
:
2294 case -NFS4ERR_BAD_STATEID
:
2295 case -NFS4ERR_EXPIRED
:
2296 if (calldata
->arg
.fmode
== 0)
2299 if (nfs4_async_handle_error(task
, server
, state
) == -EAGAIN
)
2300 rpc_restart_call_prepare(task
);
2302 nfs_release_seqid(calldata
->arg
.seqid
);
2303 nfs_refresh_inode(calldata
->inode
, calldata
->res
.fattr
);
2304 dprintk("%s: done, ret = %d!\n", __func__
, task
->tk_status
);
2307 static void nfs4_close_prepare(struct rpc_task
*task
, void *data
)
2309 struct nfs4_closedata
*calldata
= data
;
2310 struct nfs4_state
*state
= calldata
->state
;
2311 struct inode
*inode
= calldata
->inode
;
2312 bool is_rdonly
, is_wronly
, is_rdwr
;
2315 dprintk("%s: begin!\n", __func__
);
2316 if (nfs_wait_on_sequence(calldata
->arg
.seqid
, task
) != 0)
2319 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_DOWNGRADE
];
2320 spin_lock(&state
->owner
->so_lock
);
2321 is_rdwr
= test_bit(NFS_O_RDWR_STATE
, &state
->flags
);
2322 is_rdonly
= test_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
2323 is_wronly
= test_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
2324 /* Calculate the change in open mode */
2325 calldata
->arg
.fmode
= 0;
2326 if (state
->n_rdwr
== 0) {
2327 if (state
->n_rdonly
== 0)
2328 call_close
|= is_rdonly
;
2330 calldata
->arg
.fmode
|= FMODE_READ
;
2331 if (state
->n_wronly
== 0)
2332 call_close
|= is_wronly
;
2334 calldata
->arg
.fmode
|= FMODE_WRITE
;
2335 if (calldata
->arg
.fmode
!= (FMODE_READ
|FMODE_WRITE
))
2336 call_close
|= is_rdwr
;
2338 calldata
->arg
.fmode
|= FMODE_READ
|FMODE_WRITE
;
2340 if (!nfs4_valid_open_stateid(state
))
2342 spin_unlock(&state
->owner
->so_lock
);
2345 /* Note: exit _without_ calling nfs4_close_done */
2349 if (calldata
->arg
.fmode
== 0) {
2350 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CLOSE
];
2351 if (calldata
->roc
&&
2352 pnfs_roc_drain(inode
, &calldata
->roc_barrier
, task
)) {
2353 nfs_release_seqid(calldata
->arg
.seqid
);
2358 nfs_fattr_init(calldata
->res
.fattr
);
2359 calldata
->timestamp
= jiffies
;
2360 if (nfs4_setup_sequence(NFS_SERVER(inode
),
2361 &calldata
->arg
.seq_args
,
2362 &calldata
->res
.seq_res
,
2364 nfs_release_seqid(calldata
->arg
.seqid
);
2365 dprintk("%s: done!\n", __func__
);
2368 task
->tk_action
= NULL
;
2370 nfs4_sequence_done(task
, &calldata
->res
.seq_res
);
2373 static const struct rpc_call_ops nfs4_close_ops
= {
2374 .rpc_call_prepare
= nfs4_close_prepare
,
2375 .rpc_call_done
= nfs4_close_done
,
2376 .rpc_release
= nfs4_free_closedata
,
2380 * It is possible for data to be read/written from a mem-mapped file
2381 * after the sys_close call (which hits the vfs layer as a flush).
2382 * This means that we can't safely call nfsv4 close on a file until
2383 * the inode is cleared. This in turn means that we are not good
2384 * NFSv4 citizens - we do not indicate to the server to update the file's
2385 * share state even when we are done with one of the three share
2386 * stateid's in the inode.
2388 * NOTE: Caller must be holding the sp->so_owner semaphore!
2390 int nfs4_do_close(struct nfs4_state
*state
, gfp_t gfp_mask
, int wait
)
2392 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
2393 struct nfs4_closedata
*calldata
;
2394 struct nfs4_state_owner
*sp
= state
->owner
;
2395 struct rpc_task
*task
;
2396 struct rpc_message msg
= {
2397 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CLOSE
],
2398 .rpc_cred
= state
->owner
->so_cred
,
2400 struct rpc_task_setup task_setup_data
= {
2401 .rpc_client
= server
->client
,
2402 .rpc_message
= &msg
,
2403 .callback_ops
= &nfs4_close_ops
,
2404 .workqueue
= nfsiod_workqueue
,
2405 .flags
= RPC_TASK_ASYNC
,
2407 int status
= -ENOMEM
;
2409 calldata
= kzalloc(sizeof(*calldata
), gfp_mask
);
2410 if (calldata
== NULL
)
2412 nfs41_init_sequence(&calldata
->arg
.seq_args
, &calldata
->res
.seq_res
, 1);
2413 calldata
->inode
= state
->inode
;
2414 calldata
->state
= state
;
2415 calldata
->arg
.fh
= NFS_FH(state
->inode
);
2416 calldata
->arg
.stateid
= &state
->open_stateid
;
2417 /* Serialization for the sequence id */
2418 calldata
->arg
.seqid
= nfs_alloc_seqid(&state
->owner
->so_seqid
, gfp_mask
);
2419 if (calldata
->arg
.seqid
== NULL
)
2420 goto out_free_calldata
;
2421 calldata
->arg
.fmode
= 0;
2422 calldata
->arg
.bitmask
= server
->cache_consistency_bitmask
;
2423 calldata
->res
.fattr
= &calldata
->fattr
;
2424 calldata
->res
.seqid
= calldata
->arg
.seqid
;
2425 calldata
->res
.server
= server
;
2426 calldata
->roc
= pnfs_roc(state
->inode
);
2427 nfs_sb_active(calldata
->inode
->i_sb
);
2429 msg
.rpc_argp
= &calldata
->arg
;
2430 msg
.rpc_resp
= &calldata
->res
;
2431 task_setup_data
.callback_data
= calldata
;
2432 task
= rpc_run_task(&task_setup_data
);
2434 return PTR_ERR(task
);
2437 status
= rpc_wait_for_completion_task(task
);
2443 nfs4_put_open_state(state
);
2444 nfs4_put_state_owner(sp
);
2448 static struct inode
*
2449 nfs4_atomic_open(struct inode
*dir
, struct nfs_open_context
*ctx
, int open_flags
, struct iattr
*attr
)
2451 struct nfs4_state
*state
;
2453 /* Protect against concurrent sillydeletes */
2454 state
= nfs4_do_open(dir
, ctx
->dentry
, ctx
->mode
, open_flags
, attr
,
2455 ctx
->cred
, &ctx
->mdsthreshold
);
2457 return ERR_CAST(state
);
2459 return igrab(state
->inode
);
2462 static void nfs4_close_context(struct nfs_open_context
*ctx
, int is_sync
)
2464 if (ctx
->state
== NULL
)
2467 nfs4_close_sync(ctx
->state
, ctx
->mode
);
2469 nfs4_close_state(ctx
->state
, ctx
->mode
);
2472 static int _nfs4_server_capabilities(struct nfs_server
*server
, struct nfs_fh
*fhandle
)
2474 struct nfs4_server_caps_arg args
= {
2477 struct nfs4_server_caps_res res
= {};
2478 struct rpc_message msg
= {
2479 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SERVER_CAPS
],
2485 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2487 memcpy(server
->attr_bitmask
, res
.attr_bitmask
, sizeof(server
->attr_bitmask
));
2488 server
->caps
&= ~(NFS_CAP_ACLS
|NFS_CAP_HARDLINKS
|
2489 NFS_CAP_SYMLINKS
|NFS_CAP_FILEID
|
2490 NFS_CAP_MODE
|NFS_CAP_NLINK
|NFS_CAP_OWNER
|
2491 NFS_CAP_OWNER_GROUP
|NFS_CAP_ATIME
|
2492 NFS_CAP_CTIME
|NFS_CAP_MTIME
);
2493 if (res
.attr_bitmask
[0] & FATTR4_WORD0_ACL
)
2494 server
->caps
|= NFS_CAP_ACLS
;
2495 if (res
.has_links
!= 0)
2496 server
->caps
|= NFS_CAP_HARDLINKS
;
2497 if (res
.has_symlinks
!= 0)
2498 server
->caps
|= NFS_CAP_SYMLINKS
;
2499 if (res
.attr_bitmask
[0] & FATTR4_WORD0_FILEID
)
2500 server
->caps
|= NFS_CAP_FILEID
;
2501 if (res
.attr_bitmask
[1] & FATTR4_WORD1_MODE
)
2502 server
->caps
|= NFS_CAP_MODE
;
2503 if (res
.attr_bitmask
[1] & FATTR4_WORD1_NUMLINKS
)
2504 server
->caps
|= NFS_CAP_NLINK
;
2505 if (res
.attr_bitmask
[1] & FATTR4_WORD1_OWNER
)
2506 server
->caps
|= NFS_CAP_OWNER
;
2507 if (res
.attr_bitmask
[1] & FATTR4_WORD1_OWNER_GROUP
)
2508 server
->caps
|= NFS_CAP_OWNER_GROUP
;
2509 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_ACCESS
)
2510 server
->caps
|= NFS_CAP_ATIME
;
2511 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_METADATA
)
2512 server
->caps
|= NFS_CAP_CTIME
;
2513 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_MODIFY
)
2514 server
->caps
|= NFS_CAP_MTIME
;
2516 memcpy(server
->cache_consistency_bitmask
, res
.attr_bitmask
, sizeof(server
->cache_consistency_bitmask
));
2517 server
->cache_consistency_bitmask
[0] &= FATTR4_WORD0_CHANGE
|FATTR4_WORD0_SIZE
;
2518 server
->cache_consistency_bitmask
[1] &= FATTR4_WORD1_TIME_METADATA
|FATTR4_WORD1_TIME_MODIFY
;
2519 server
->acl_bitmask
= res
.acl_bitmask
;
2520 server
->fh_expire_type
= res
.fh_expire_type
;
2526 int nfs4_server_capabilities(struct nfs_server
*server
, struct nfs_fh
*fhandle
)
2528 struct nfs4_exception exception
= { };
2531 err
= nfs4_handle_exception(server
,
2532 _nfs4_server_capabilities(server
, fhandle
),
2534 } while (exception
.retry
);
2538 static int _nfs4_lookup_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2539 struct nfs_fsinfo
*info
)
2541 struct nfs4_lookup_root_arg args
= {
2542 .bitmask
= nfs4_fattr_bitmap
,
2544 struct nfs4_lookup_res res
= {
2546 .fattr
= info
->fattr
,
2549 struct rpc_message msg
= {
2550 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOOKUP_ROOT
],
2555 nfs_fattr_init(info
->fattr
);
2556 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2559 static int nfs4_lookup_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2560 struct nfs_fsinfo
*info
)
2562 struct nfs4_exception exception
= { };
2565 err
= _nfs4_lookup_root(server
, fhandle
, info
);
2568 case -NFS4ERR_WRONGSEC
:
2571 err
= nfs4_handle_exception(server
, err
, &exception
);
2573 } while (exception
.retry
);
2578 static int nfs4_lookup_root_sec(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2579 struct nfs_fsinfo
*info
, rpc_authflavor_t flavor
)
2581 struct rpc_auth
*auth
;
2584 auth
= rpcauth_create(flavor
, server
->client
);
2589 ret
= nfs4_lookup_root(server
, fhandle
, info
);
2595 * Retry pseudoroot lookup with various security flavors. We do this when:
2597 * NFSv4.0: the PUTROOTFH operation returns NFS4ERR_WRONGSEC
2598 * NFSv4.1: the server does not support the SECINFO_NO_NAME operation
2600 * Returns zero on success, or a negative NFS4ERR value, or a
2601 * negative errno value.
2603 static int nfs4_find_root_sec(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2604 struct nfs_fsinfo
*info
)
2606 /* Per 3530bis 15.33.5 */
2607 static const rpc_authflavor_t flav_array
[] = {
2611 RPC_AUTH_UNIX
, /* courtesy */
2614 int status
= -EPERM
;
2617 for (i
= 0; i
< ARRAY_SIZE(flav_array
); i
++) {
2618 status
= nfs4_lookup_root_sec(server
, fhandle
, info
, flav_array
[i
]);
2619 if (status
== -NFS4ERR_WRONGSEC
|| status
== -EACCES
)
2625 * -EACCESS could mean that the user doesn't have correct permissions
2626 * to access the mount. It could also mean that we tried to mount
2627 * with a gss auth flavor, but rpc.gssd isn't running. Either way,
2628 * existing mount programs don't handle -EACCES very well so it should
2629 * be mapped to -EPERM instead.
2631 if (status
== -EACCES
)
2636 static int nfs4_do_find_root_sec(struct nfs_server
*server
,
2637 struct nfs_fh
*fhandle
, struct nfs_fsinfo
*info
)
2639 int mv
= server
->nfs_client
->cl_minorversion
;
2640 return nfs_v4_minor_ops
[mv
]->find_root_sec(server
, fhandle
, info
);
2644 * nfs4_proc_get_rootfh - get file handle for server's pseudoroot
2645 * @server: initialized nfs_server handle
2646 * @fhandle: we fill in the pseudo-fs root file handle
2647 * @info: we fill in an FSINFO struct
2649 * Returns zero on success, or a negative errno.
2651 int nfs4_proc_get_rootfh(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2652 struct nfs_fsinfo
*info
)
2656 status
= nfs4_lookup_root(server
, fhandle
, info
);
2657 if ((status
== -NFS4ERR_WRONGSEC
) &&
2658 !(server
->flags
& NFS_MOUNT_SECFLAVOUR
))
2659 status
= nfs4_do_find_root_sec(server
, fhandle
, info
);
2662 status
= nfs4_server_capabilities(server
, fhandle
);
2664 status
= nfs4_do_fsinfo(server
, fhandle
, info
);
2666 return nfs4_map_errors(status
);
2669 static int nfs4_proc_get_root(struct nfs_server
*server
, struct nfs_fh
*mntfh
,
2670 struct nfs_fsinfo
*info
)
2673 struct nfs_fattr
*fattr
= info
->fattr
;
2675 error
= nfs4_server_capabilities(server
, mntfh
);
2677 dprintk("nfs4_get_root: getcaps error = %d\n", -error
);
2681 error
= nfs4_proc_getattr(server
, mntfh
, fattr
);
2683 dprintk("nfs4_get_root: getattr error = %d\n", -error
);
2687 if (fattr
->valid
& NFS_ATTR_FATTR_FSID
&&
2688 !nfs_fsid_equal(&server
->fsid
, &fattr
->fsid
))
2689 memcpy(&server
->fsid
, &fattr
->fsid
, sizeof(server
->fsid
));
2695 * Get locations and (maybe) other attributes of a referral.
2696 * Note that we'll actually follow the referral later when
2697 * we detect fsid mismatch in inode revalidation
2699 static int nfs4_get_referral(struct rpc_clnt
*client
, struct inode
*dir
,
2700 const struct qstr
*name
, struct nfs_fattr
*fattr
,
2701 struct nfs_fh
*fhandle
)
2703 int status
= -ENOMEM
;
2704 struct page
*page
= NULL
;
2705 struct nfs4_fs_locations
*locations
= NULL
;
2707 page
= alloc_page(GFP_KERNEL
);
2710 locations
= kmalloc(sizeof(struct nfs4_fs_locations
), GFP_KERNEL
);
2711 if (locations
== NULL
)
2714 status
= nfs4_proc_fs_locations(client
, dir
, name
, locations
, page
);
2717 /* Make sure server returned a different fsid for the referral */
2718 if (nfs_fsid_equal(&NFS_SERVER(dir
)->fsid
, &locations
->fattr
.fsid
)) {
2719 dprintk("%s: server did not return a different fsid for"
2720 " a referral at %s\n", __func__
, name
->name
);
2724 /* Fixup attributes for the nfs_lookup() call to nfs_fhget() */
2725 nfs_fixup_referral_attributes(&locations
->fattr
);
2727 /* replace the lookup nfs_fattr with the locations nfs_fattr */
2728 memcpy(fattr
, &locations
->fattr
, sizeof(struct nfs_fattr
));
2729 memset(fhandle
, 0, sizeof(struct nfs_fh
));
2737 static int _nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
2739 struct nfs4_getattr_arg args
= {
2741 .bitmask
= server
->attr_bitmask
,
2743 struct nfs4_getattr_res res
= {
2747 struct rpc_message msg
= {
2748 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETATTR
],
2753 nfs_fattr_init(fattr
);
2754 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2757 static int nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
2759 struct nfs4_exception exception
= { };
2762 err
= nfs4_handle_exception(server
,
2763 _nfs4_proc_getattr(server
, fhandle
, fattr
),
2765 } while (exception
.retry
);
2770 * The file is not closed if it is opened due to the a request to change
2771 * the size of the file. The open call will not be needed once the
2772 * VFS layer lookup-intents are implemented.
2774 * Close is called when the inode is destroyed.
2775 * If we haven't opened the file for O_WRONLY, we
2776 * need to in the size_change case to obtain a stateid.
2779 * Because OPEN is always done by name in nfsv4, it is
2780 * possible that we opened a different file by the same
2781 * name. We can recognize this race condition, but we
2782 * can't do anything about it besides returning an error.
2784 * This will be fixed with VFS changes (lookup-intent).
2787 nfs4_proc_setattr(struct dentry
*dentry
, struct nfs_fattr
*fattr
,
2788 struct iattr
*sattr
)
2790 struct inode
*inode
= dentry
->d_inode
;
2791 struct rpc_cred
*cred
= NULL
;
2792 struct nfs4_state
*state
= NULL
;
2795 if (pnfs_ld_layoutret_on_setattr(inode
))
2796 pnfs_commit_and_return_layout(inode
);
2798 nfs_fattr_init(fattr
);
2800 /* Deal with open(O_TRUNC) */
2801 if (sattr
->ia_valid
& ATTR_OPEN
)
2802 sattr
->ia_valid
&= ~(ATTR_MTIME
|ATTR_CTIME
|ATTR_OPEN
);
2804 /* Optimization: if the end result is no change, don't RPC */
2805 if ((sattr
->ia_valid
& ~(ATTR_FILE
)) == 0)
2808 /* Search for an existing open(O_WRITE) file */
2809 if (sattr
->ia_valid
& ATTR_FILE
) {
2810 struct nfs_open_context
*ctx
;
2812 ctx
= nfs_file_open_context(sattr
->ia_file
);
2819 status
= nfs4_do_setattr(inode
, cred
, fattr
, sattr
, state
);
2821 nfs_setattr_update_inode(inode
, sattr
);
2825 static int _nfs4_proc_lookup(struct rpc_clnt
*clnt
, struct inode
*dir
,
2826 const struct qstr
*name
, struct nfs_fh
*fhandle
,
2827 struct nfs_fattr
*fattr
)
2829 struct nfs_server
*server
= NFS_SERVER(dir
);
2831 struct nfs4_lookup_arg args
= {
2832 .bitmask
= server
->attr_bitmask
,
2833 .dir_fh
= NFS_FH(dir
),
2836 struct nfs4_lookup_res res
= {
2841 struct rpc_message msg
= {
2842 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOOKUP
],
2847 nfs_fattr_init(fattr
);
2849 dprintk("NFS call lookup %s\n", name
->name
);
2850 status
= nfs4_call_sync(clnt
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2851 dprintk("NFS reply lookup: %d\n", status
);
2855 static void nfs_fixup_secinfo_attributes(struct nfs_fattr
*fattr
)
2857 fattr
->valid
|= NFS_ATTR_FATTR_TYPE
| NFS_ATTR_FATTR_MODE
|
2858 NFS_ATTR_FATTR_NLINK
| NFS_ATTR_FATTR_MOUNTPOINT
;
2859 fattr
->mode
= S_IFDIR
| S_IRUGO
| S_IXUGO
;
2863 static int nfs4_proc_lookup_common(struct rpc_clnt
**clnt
, struct inode
*dir
,
2864 struct qstr
*name
, struct nfs_fh
*fhandle
,
2865 struct nfs_fattr
*fattr
)
2867 struct nfs4_exception exception
= { };
2868 struct rpc_clnt
*client
= *clnt
;
2871 err
= _nfs4_proc_lookup(client
, dir
, name
, fhandle
, fattr
);
2873 case -NFS4ERR_BADNAME
:
2876 case -NFS4ERR_MOVED
:
2877 err
= nfs4_get_referral(client
, dir
, name
, fattr
, fhandle
);
2879 case -NFS4ERR_WRONGSEC
:
2881 if (client
!= *clnt
)
2884 client
= nfs4_create_sec_client(client
, dir
, name
);
2886 return PTR_ERR(client
);
2888 exception
.retry
= 1;
2891 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
, &exception
);
2893 } while (exception
.retry
);
2898 else if (client
!= *clnt
)
2899 rpc_shutdown_client(client
);
2904 static int nfs4_proc_lookup(struct inode
*dir
, struct qstr
*name
,
2905 struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
2908 struct rpc_clnt
*client
= NFS_CLIENT(dir
);
2910 status
= nfs4_proc_lookup_common(&client
, dir
, name
, fhandle
, fattr
);
2911 if (client
!= NFS_CLIENT(dir
)) {
2912 rpc_shutdown_client(client
);
2913 nfs_fixup_secinfo_attributes(fattr
);
2919 nfs4_proc_lookup_mountpoint(struct inode
*dir
, struct qstr
*name
,
2920 struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
2923 struct rpc_clnt
*client
= rpc_clone_client(NFS_CLIENT(dir
));
2925 status
= nfs4_proc_lookup_common(&client
, dir
, name
, fhandle
, fattr
);
2927 rpc_shutdown_client(client
);
2928 return ERR_PTR(status
);
2933 static int _nfs4_proc_access(struct inode
*inode
, struct nfs_access_entry
*entry
)
2935 struct nfs_server
*server
= NFS_SERVER(inode
);
2936 struct nfs4_accessargs args
= {
2937 .fh
= NFS_FH(inode
),
2938 .bitmask
= server
->cache_consistency_bitmask
,
2940 struct nfs4_accessres res
= {
2943 struct rpc_message msg
= {
2944 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_ACCESS
],
2947 .rpc_cred
= entry
->cred
,
2949 int mode
= entry
->mask
;
2953 * Determine which access bits we want to ask for...
2955 if (mode
& MAY_READ
)
2956 args
.access
|= NFS4_ACCESS_READ
;
2957 if (S_ISDIR(inode
->i_mode
)) {
2958 if (mode
& MAY_WRITE
)
2959 args
.access
|= NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
| NFS4_ACCESS_DELETE
;
2960 if (mode
& MAY_EXEC
)
2961 args
.access
|= NFS4_ACCESS_LOOKUP
;
2963 if (mode
& MAY_WRITE
)
2964 args
.access
|= NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
;
2965 if (mode
& MAY_EXEC
)
2966 args
.access
|= NFS4_ACCESS_EXECUTE
;
2969 res
.fattr
= nfs_alloc_fattr();
2970 if (res
.fattr
== NULL
)
2973 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2975 nfs_access_set_mask(entry
, res
.access
);
2976 nfs_refresh_inode(inode
, res
.fattr
);
2978 nfs_free_fattr(res
.fattr
);
2982 static int nfs4_proc_access(struct inode
*inode
, struct nfs_access_entry
*entry
)
2984 struct nfs4_exception exception
= { };
2987 err
= nfs4_handle_exception(NFS_SERVER(inode
),
2988 _nfs4_proc_access(inode
, entry
),
2990 } while (exception
.retry
);
2995 * TODO: For the time being, we don't try to get any attributes
2996 * along with any of the zero-copy operations READ, READDIR,
2999 * In the case of the first three, we want to put the GETATTR
3000 * after the read-type operation -- this is because it is hard
3001 * to predict the length of a GETATTR response in v4, and thus
3002 * align the READ data correctly. This means that the GETATTR
3003 * may end up partially falling into the page cache, and we should
3004 * shift it into the 'tail' of the xdr_buf before processing.
3005 * To do this efficiently, we need to know the total length
3006 * of data received, which doesn't seem to be available outside
3009 * In the case of WRITE, we also want to put the GETATTR after
3010 * the operation -- in this case because we want to make sure
3011 * we get the post-operation mtime and size.
3013 * Both of these changes to the XDR layer would in fact be quite
3014 * minor, but I decided to leave them for a subsequent patch.
3016 static int _nfs4_proc_readlink(struct inode
*inode
, struct page
*page
,
3017 unsigned int pgbase
, unsigned int pglen
)
3019 struct nfs4_readlink args
= {
3020 .fh
= NFS_FH(inode
),
3025 struct nfs4_readlink_res res
;
3026 struct rpc_message msg
= {
3027 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READLINK
],
3032 return nfs4_call_sync(NFS_SERVER(inode
)->client
, NFS_SERVER(inode
), &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3035 static int nfs4_proc_readlink(struct inode
*inode
, struct page
*page
,
3036 unsigned int pgbase
, unsigned int pglen
)
3038 struct nfs4_exception exception
= { };
3041 err
= nfs4_handle_exception(NFS_SERVER(inode
),
3042 _nfs4_proc_readlink(inode
, page
, pgbase
, pglen
),
3044 } while (exception
.retry
);
3049 * This is just for mknod. open(O_CREAT) will always do ->open_context().
3052 nfs4_proc_create(struct inode
*dir
, struct dentry
*dentry
, struct iattr
*sattr
,
3055 struct nfs_open_context
*ctx
;
3056 struct nfs4_state
*state
;
3059 ctx
= alloc_nfs_open_context(dentry
, FMODE_READ
);
3061 return PTR_ERR(ctx
);
3063 sattr
->ia_mode
&= ~current_umask();
3064 state
= nfs4_do_open(dir
, dentry
, ctx
->mode
,
3065 flags
, sattr
, ctx
->cred
,
3066 &ctx
->mdsthreshold
);
3068 if (IS_ERR(state
)) {
3069 status
= PTR_ERR(state
);
3072 d_add(dentry
, igrab(state
->inode
));
3073 nfs_set_verifier(dentry
, nfs_save_change_attribute(dir
));
3076 put_nfs_open_context(ctx
);
3080 static int _nfs4_proc_remove(struct inode
*dir
, struct qstr
*name
)
3082 struct nfs_server
*server
= NFS_SERVER(dir
);
3083 struct nfs_removeargs args
= {
3087 struct nfs_removeres res
= {
3090 struct rpc_message msg
= {
3091 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_REMOVE
],
3097 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 1);
3099 update_changeattr(dir
, &res
.cinfo
);
3103 static int nfs4_proc_remove(struct inode
*dir
, struct qstr
*name
)
3105 struct nfs4_exception exception
= { };
3108 err
= nfs4_handle_exception(NFS_SERVER(dir
),
3109 _nfs4_proc_remove(dir
, name
),
3111 } while (exception
.retry
);
3115 static void nfs4_proc_unlink_setup(struct rpc_message
*msg
, struct inode
*dir
)
3117 struct nfs_server
*server
= NFS_SERVER(dir
);
3118 struct nfs_removeargs
*args
= msg
->rpc_argp
;
3119 struct nfs_removeres
*res
= msg
->rpc_resp
;
3121 res
->server
= server
;
3122 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_REMOVE
];
3123 nfs41_init_sequence(&args
->seq_args
, &res
->seq_res
, 1);
3126 static void nfs4_proc_unlink_rpc_prepare(struct rpc_task
*task
, struct nfs_unlinkdata
*data
)
3128 nfs4_setup_sequence(NFS_SERVER(data
->dir
),
3129 &data
->args
.seq_args
,
3134 static int nfs4_proc_unlink_done(struct rpc_task
*task
, struct inode
*dir
)
3136 struct nfs_removeres
*res
= task
->tk_msg
.rpc_resp
;
3138 if (!nfs4_sequence_done(task
, &res
->seq_res
))
3140 if (nfs4_async_handle_error(task
, res
->server
, NULL
) == -EAGAIN
)
3142 update_changeattr(dir
, &res
->cinfo
);
3146 static void nfs4_proc_rename_setup(struct rpc_message
*msg
, struct inode
*dir
)
3148 struct nfs_server
*server
= NFS_SERVER(dir
);
3149 struct nfs_renameargs
*arg
= msg
->rpc_argp
;
3150 struct nfs_renameres
*res
= msg
->rpc_resp
;
3152 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENAME
];
3153 res
->server
= server
;
3154 nfs41_init_sequence(&arg
->seq_args
, &res
->seq_res
, 1);
3157 static void nfs4_proc_rename_rpc_prepare(struct rpc_task
*task
, struct nfs_renamedata
*data
)
3159 nfs4_setup_sequence(NFS_SERVER(data
->old_dir
),
3160 &data
->args
.seq_args
,
3165 static int nfs4_proc_rename_done(struct rpc_task
*task
, struct inode
*old_dir
,
3166 struct inode
*new_dir
)
3168 struct nfs_renameres
*res
= task
->tk_msg
.rpc_resp
;
3170 if (!nfs4_sequence_done(task
, &res
->seq_res
))
3172 if (nfs4_async_handle_error(task
, res
->server
, NULL
) == -EAGAIN
)
3175 update_changeattr(old_dir
, &res
->old_cinfo
);
3176 update_changeattr(new_dir
, &res
->new_cinfo
);
3180 static int _nfs4_proc_rename(struct inode
*old_dir
, struct qstr
*old_name
,
3181 struct inode
*new_dir
, struct qstr
*new_name
)
3183 struct nfs_server
*server
= NFS_SERVER(old_dir
);
3184 struct nfs_renameargs arg
= {
3185 .old_dir
= NFS_FH(old_dir
),
3186 .new_dir
= NFS_FH(new_dir
),
3187 .old_name
= old_name
,
3188 .new_name
= new_name
,
3190 struct nfs_renameres res
= {
3193 struct rpc_message msg
= {
3194 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENAME
],
3198 int status
= -ENOMEM
;
3200 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
3202 update_changeattr(old_dir
, &res
.old_cinfo
);
3203 update_changeattr(new_dir
, &res
.new_cinfo
);
3208 static int nfs4_proc_rename(struct inode
*old_dir
, struct qstr
*old_name
,
3209 struct inode
*new_dir
, struct qstr
*new_name
)
3211 struct nfs4_exception exception
= { };
3214 err
= nfs4_handle_exception(NFS_SERVER(old_dir
),
3215 _nfs4_proc_rename(old_dir
, old_name
,
3218 } while (exception
.retry
);
3222 static int _nfs4_proc_link(struct inode
*inode
, struct inode
*dir
, struct qstr
*name
)
3224 struct nfs_server
*server
= NFS_SERVER(inode
);
3225 struct nfs4_link_arg arg
= {
3226 .fh
= NFS_FH(inode
),
3227 .dir_fh
= NFS_FH(dir
),
3229 .bitmask
= server
->attr_bitmask
,
3231 struct nfs4_link_res res
= {
3234 struct rpc_message msg
= {
3235 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LINK
],
3239 int status
= -ENOMEM
;
3241 res
.fattr
= nfs_alloc_fattr();
3242 if (res
.fattr
== NULL
)
3245 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
3247 update_changeattr(dir
, &res
.cinfo
);
3248 nfs_post_op_update_inode(inode
, res
.fattr
);
3251 nfs_free_fattr(res
.fattr
);
3255 static int nfs4_proc_link(struct inode
*inode
, struct inode
*dir
, struct qstr
*name
)
3257 struct nfs4_exception exception
= { };
3260 err
= nfs4_handle_exception(NFS_SERVER(inode
),
3261 _nfs4_proc_link(inode
, dir
, name
),
3263 } while (exception
.retry
);
3267 struct nfs4_createdata
{
3268 struct rpc_message msg
;
3269 struct nfs4_create_arg arg
;
3270 struct nfs4_create_res res
;
3272 struct nfs_fattr fattr
;
3275 static struct nfs4_createdata
*nfs4_alloc_createdata(struct inode
*dir
,
3276 struct qstr
*name
, struct iattr
*sattr
, u32 ftype
)
3278 struct nfs4_createdata
*data
;
3280 data
= kzalloc(sizeof(*data
), GFP_KERNEL
);
3282 struct nfs_server
*server
= NFS_SERVER(dir
);
3284 data
->msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CREATE
];
3285 data
->msg
.rpc_argp
= &data
->arg
;
3286 data
->msg
.rpc_resp
= &data
->res
;
3287 data
->arg
.dir_fh
= NFS_FH(dir
);
3288 data
->arg
.server
= server
;
3289 data
->arg
.name
= name
;
3290 data
->arg
.attrs
= sattr
;
3291 data
->arg
.ftype
= ftype
;
3292 data
->arg
.bitmask
= server
->attr_bitmask
;
3293 data
->res
.server
= server
;
3294 data
->res
.fh
= &data
->fh
;
3295 data
->res
.fattr
= &data
->fattr
;
3296 nfs_fattr_init(data
->res
.fattr
);
3301 static int nfs4_do_create(struct inode
*dir
, struct dentry
*dentry
, struct nfs4_createdata
*data
)
3303 int status
= nfs4_call_sync(NFS_SERVER(dir
)->client
, NFS_SERVER(dir
), &data
->msg
,
3304 &data
->arg
.seq_args
, &data
->res
.seq_res
, 1);
3306 update_changeattr(dir
, &data
->res
.dir_cinfo
);
3307 status
= nfs_instantiate(dentry
, data
->res
.fh
, data
->res
.fattr
);
3312 static void nfs4_free_createdata(struct nfs4_createdata
*data
)
3317 static int _nfs4_proc_symlink(struct inode
*dir
, struct dentry
*dentry
,
3318 struct page
*page
, unsigned int len
, struct iattr
*sattr
)
3320 struct nfs4_createdata
*data
;
3321 int status
= -ENAMETOOLONG
;
3323 if (len
> NFS4_MAXPATHLEN
)
3327 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4LNK
);
3331 data
->msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SYMLINK
];
3332 data
->arg
.u
.symlink
.pages
= &page
;
3333 data
->arg
.u
.symlink
.len
= len
;
3335 status
= nfs4_do_create(dir
, dentry
, data
);
3337 nfs4_free_createdata(data
);
3342 static int nfs4_proc_symlink(struct inode
*dir
, struct dentry
*dentry
,
3343 struct page
*page
, unsigned int len
, struct iattr
*sattr
)
3345 struct nfs4_exception exception
= { };
3348 err
= nfs4_handle_exception(NFS_SERVER(dir
),
3349 _nfs4_proc_symlink(dir
, dentry
, page
,
3352 } while (exception
.retry
);
3356 static int _nfs4_proc_mkdir(struct inode
*dir
, struct dentry
*dentry
,
3357 struct iattr
*sattr
)
3359 struct nfs4_createdata
*data
;
3360 int status
= -ENOMEM
;
3362 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4DIR
);
3366 status
= nfs4_do_create(dir
, dentry
, data
);
3368 nfs4_free_createdata(data
);
3373 static int nfs4_proc_mkdir(struct inode
*dir
, struct dentry
*dentry
,
3374 struct iattr
*sattr
)
3376 struct nfs4_exception exception
= { };
3379 sattr
->ia_mode
&= ~current_umask();
3381 err
= nfs4_handle_exception(NFS_SERVER(dir
),
3382 _nfs4_proc_mkdir(dir
, dentry
, sattr
),
3384 } while (exception
.retry
);
3388 static int _nfs4_proc_readdir(struct dentry
*dentry
, struct rpc_cred
*cred
,
3389 u64 cookie
, struct page
**pages
, unsigned int count
, int plus
)
3391 struct inode
*dir
= dentry
->d_inode
;
3392 struct nfs4_readdir_arg args
= {
3397 .bitmask
= NFS_SERVER(dentry
->d_inode
)->attr_bitmask
,
3400 struct nfs4_readdir_res res
;
3401 struct rpc_message msg
= {
3402 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READDIR
],
3409 dprintk("%s: dentry = %s/%s, cookie = %Lu\n", __func__
,
3410 dentry
->d_parent
->d_name
.name
,
3411 dentry
->d_name
.name
,
3412 (unsigned long long)cookie
);
3413 nfs4_setup_readdir(cookie
, NFS_I(dir
)->cookieverf
, dentry
, &args
);
3414 res
.pgbase
= args
.pgbase
;
3415 status
= nfs4_call_sync(NFS_SERVER(dir
)->client
, NFS_SERVER(dir
), &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3417 memcpy(NFS_I(dir
)->cookieverf
, res
.verifier
.data
, NFS4_VERIFIER_SIZE
);
3418 status
+= args
.pgbase
;
3421 nfs_invalidate_atime(dir
);
3423 dprintk("%s: returns %d\n", __func__
, status
);
3427 static int nfs4_proc_readdir(struct dentry
*dentry
, struct rpc_cred
*cred
,
3428 u64 cookie
, struct page
**pages
, unsigned int count
, int plus
)
3430 struct nfs4_exception exception
= { };
3433 err
= nfs4_handle_exception(NFS_SERVER(dentry
->d_inode
),
3434 _nfs4_proc_readdir(dentry
, cred
, cookie
,
3435 pages
, count
, plus
),
3437 } while (exception
.retry
);
3441 static int _nfs4_proc_mknod(struct inode
*dir
, struct dentry
*dentry
,
3442 struct iattr
*sattr
, dev_t rdev
)
3444 struct nfs4_createdata
*data
;
3445 int mode
= sattr
->ia_mode
;
3446 int status
= -ENOMEM
;
3448 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4SOCK
);
3453 data
->arg
.ftype
= NF4FIFO
;
3454 else if (S_ISBLK(mode
)) {
3455 data
->arg
.ftype
= NF4BLK
;
3456 data
->arg
.u
.device
.specdata1
= MAJOR(rdev
);
3457 data
->arg
.u
.device
.specdata2
= MINOR(rdev
);
3459 else if (S_ISCHR(mode
)) {
3460 data
->arg
.ftype
= NF4CHR
;
3461 data
->arg
.u
.device
.specdata1
= MAJOR(rdev
);
3462 data
->arg
.u
.device
.specdata2
= MINOR(rdev
);
3463 } else if (!S_ISSOCK(mode
)) {
3468 status
= nfs4_do_create(dir
, dentry
, data
);
3470 nfs4_free_createdata(data
);
3475 static int nfs4_proc_mknod(struct inode
*dir
, struct dentry
*dentry
,
3476 struct iattr
*sattr
, dev_t rdev
)
3478 struct nfs4_exception exception
= { };
3481 sattr
->ia_mode
&= ~current_umask();
3483 err
= nfs4_handle_exception(NFS_SERVER(dir
),
3484 _nfs4_proc_mknod(dir
, dentry
, sattr
, rdev
),
3486 } while (exception
.retry
);
3490 static int _nfs4_proc_statfs(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3491 struct nfs_fsstat
*fsstat
)
3493 struct nfs4_statfs_arg args
= {
3495 .bitmask
= server
->attr_bitmask
,
3497 struct nfs4_statfs_res res
= {
3500 struct rpc_message msg
= {
3501 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_STATFS
],
3506 nfs_fattr_init(fsstat
->fattr
);
3507 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3510 static int nfs4_proc_statfs(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsstat
*fsstat
)
3512 struct nfs4_exception exception
= { };
3515 err
= nfs4_handle_exception(server
,
3516 _nfs4_proc_statfs(server
, fhandle
, fsstat
),
3518 } while (exception
.retry
);
3522 static int _nfs4_do_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3523 struct nfs_fsinfo
*fsinfo
)
3525 struct nfs4_fsinfo_arg args
= {
3527 .bitmask
= server
->attr_bitmask
,
3529 struct nfs4_fsinfo_res res
= {
3532 struct rpc_message msg
= {
3533 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FSINFO
],
3538 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3541 static int nfs4_do_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsinfo
*fsinfo
)
3543 struct nfs4_exception exception
= { };
3544 unsigned long now
= jiffies
;
3548 err
= _nfs4_do_fsinfo(server
, fhandle
, fsinfo
);
3550 struct nfs_client
*clp
= server
->nfs_client
;
3552 spin_lock(&clp
->cl_lock
);
3553 clp
->cl_lease_time
= fsinfo
->lease_time
* HZ
;
3554 clp
->cl_last_renewal
= now
;
3555 spin_unlock(&clp
->cl_lock
);
3558 err
= nfs4_handle_exception(server
, err
, &exception
);
3559 } while (exception
.retry
);
3563 static int nfs4_proc_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsinfo
*fsinfo
)
3567 nfs_fattr_init(fsinfo
->fattr
);
3568 error
= nfs4_do_fsinfo(server
, fhandle
, fsinfo
);
3570 /* block layout checks this! */
3571 server
->pnfs_blksize
= fsinfo
->blksize
;
3572 set_pnfs_layoutdriver(server
, fhandle
, fsinfo
->layouttype
);
3578 static int _nfs4_proc_pathconf(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3579 struct nfs_pathconf
*pathconf
)
3581 struct nfs4_pathconf_arg args
= {
3583 .bitmask
= server
->attr_bitmask
,
3585 struct nfs4_pathconf_res res
= {
3586 .pathconf
= pathconf
,
3588 struct rpc_message msg
= {
3589 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_PATHCONF
],
3594 /* None of the pathconf attributes are mandatory to implement */
3595 if ((args
.bitmask
[0] & nfs4_pathconf_bitmap
[0]) == 0) {
3596 memset(pathconf
, 0, sizeof(*pathconf
));
3600 nfs_fattr_init(pathconf
->fattr
);
3601 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3604 static int nfs4_proc_pathconf(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3605 struct nfs_pathconf
*pathconf
)
3607 struct nfs4_exception exception
= { };
3611 err
= nfs4_handle_exception(server
,
3612 _nfs4_proc_pathconf(server
, fhandle
, pathconf
),
3614 } while (exception
.retry
);
3618 int nfs4_set_rw_stateid(nfs4_stateid
*stateid
,
3619 const struct nfs_open_context
*ctx
,
3620 const struct nfs_lock_context
*l_ctx
,
3623 const struct nfs_lockowner
*lockowner
= NULL
;
3626 lockowner
= &l_ctx
->lockowner
;
3627 return nfs4_select_rw_stateid(stateid
, ctx
->state
, fmode
, lockowner
);
3629 EXPORT_SYMBOL_GPL(nfs4_set_rw_stateid
);
3631 static bool nfs4_stateid_is_current(nfs4_stateid
*stateid
,
3632 const struct nfs_open_context
*ctx
,
3633 const struct nfs_lock_context
*l_ctx
,
3636 nfs4_stateid current_stateid
;
3638 /* If the current stateid represents a lost lock, then exit */
3639 if (nfs4_set_rw_stateid(¤t_stateid
, ctx
, l_ctx
, fmode
) == -EIO
)
3641 return nfs4_stateid_match(stateid
, ¤t_stateid
);
3644 static bool nfs4_error_stateid_expired(int err
)
3647 case -NFS4ERR_DELEG_REVOKED
:
3648 case -NFS4ERR_ADMIN_REVOKED
:
3649 case -NFS4ERR_BAD_STATEID
:
3650 case -NFS4ERR_STALE_STATEID
:
3651 case -NFS4ERR_OLD_STATEID
:
3652 case -NFS4ERR_OPENMODE
:
3653 case -NFS4ERR_EXPIRED
:
3659 void __nfs4_read_done_cb(struct nfs_read_data
*data
)
3661 nfs_invalidate_atime(data
->header
->inode
);
3664 static int nfs4_read_done_cb(struct rpc_task
*task
, struct nfs_read_data
*data
)
3666 struct nfs_server
*server
= NFS_SERVER(data
->header
->inode
);
3668 if (nfs4_async_handle_error(task
, server
, data
->args
.context
->state
) == -EAGAIN
) {
3669 rpc_restart_call_prepare(task
);
3673 __nfs4_read_done_cb(data
);
3674 if (task
->tk_status
> 0)
3675 renew_lease(server
, data
->timestamp
);
3679 static bool nfs4_read_stateid_changed(struct rpc_task
*task
,
3680 struct nfs_readargs
*args
)
3683 if (!nfs4_error_stateid_expired(task
->tk_status
) ||
3684 nfs4_stateid_is_current(&args
->stateid
,
3689 rpc_restart_call_prepare(task
);
3693 static int nfs4_read_done(struct rpc_task
*task
, struct nfs_read_data
*data
)
3696 dprintk("--> %s\n", __func__
);
3698 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
3700 if (nfs4_read_stateid_changed(task
, &data
->args
))
3702 return data
->read_done_cb
? data
->read_done_cb(task
, data
) :
3703 nfs4_read_done_cb(task
, data
);
3706 static void nfs4_proc_read_setup(struct nfs_read_data
*data
, struct rpc_message
*msg
)
3708 data
->timestamp
= jiffies
;
3709 data
->read_done_cb
= nfs4_read_done_cb
;
3710 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READ
];
3711 nfs41_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 0);
3714 static void nfs4_proc_read_rpc_prepare(struct rpc_task
*task
, struct nfs_read_data
*data
)
3716 if (nfs4_setup_sequence(NFS_SERVER(data
->header
->inode
),
3717 &data
->args
.seq_args
,
3721 nfs4_set_rw_stateid(&data
->args
.stateid
, data
->args
.context
,
3722 data
->args
.lock_context
, FMODE_READ
);
3725 static int nfs4_write_done_cb(struct rpc_task
*task
, struct nfs_write_data
*data
)
3727 struct inode
*inode
= data
->header
->inode
;
3729 if (nfs4_async_handle_error(task
, NFS_SERVER(inode
), data
->args
.context
->state
) == -EAGAIN
) {
3730 rpc_restart_call_prepare(task
);
3733 if (task
->tk_status
>= 0) {
3734 renew_lease(NFS_SERVER(inode
), data
->timestamp
);
3735 nfs_post_op_update_inode_force_wcc(inode
, &data
->fattr
);
3740 static bool nfs4_write_stateid_changed(struct rpc_task
*task
,
3741 struct nfs_writeargs
*args
)
3744 if (!nfs4_error_stateid_expired(task
->tk_status
) ||
3745 nfs4_stateid_is_current(&args
->stateid
,
3750 rpc_restart_call_prepare(task
);
3754 static int nfs4_write_done(struct rpc_task
*task
, struct nfs_write_data
*data
)
3756 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
3758 if (nfs4_write_stateid_changed(task
, &data
->args
))
3760 return data
->write_done_cb
? data
->write_done_cb(task
, data
) :
3761 nfs4_write_done_cb(task
, data
);
3765 bool nfs4_write_need_cache_consistency_data(const struct nfs_write_data
*data
)
3767 const struct nfs_pgio_header
*hdr
= data
->header
;
3769 /* Don't request attributes for pNFS or O_DIRECT writes */
3770 if (data
->ds_clp
!= NULL
|| hdr
->dreq
!= NULL
)
3772 /* Otherwise, request attributes if and only if we don't hold
3775 return nfs4_have_delegation(hdr
->inode
, FMODE_READ
) == 0;
3778 static void nfs4_proc_write_setup(struct nfs_write_data
*data
, struct rpc_message
*msg
)
3780 struct nfs_server
*server
= NFS_SERVER(data
->header
->inode
);
3782 if (!nfs4_write_need_cache_consistency_data(data
)) {
3783 data
->args
.bitmask
= NULL
;
3784 data
->res
.fattr
= NULL
;
3786 data
->args
.bitmask
= server
->cache_consistency_bitmask
;
3788 if (!data
->write_done_cb
)
3789 data
->write_done_cb
= nfs4_write_done_cb
;
3790 data
->res
.server
= server
;
3791 data
->timestamp
= jiffies
;
3793 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_WRITE
];
3794 nfs41_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
3797 static void nfs4_proc_write_rpc_prepare(struct rpc_task
*task
, struct nfs_write_data
*data
)
3799 if (nfs4_setup_sequence(NFS_SERVER(data
->header
->inode
),
3800 &data
->args
.seq_args
,
3804 nfs4_set_rw_stateid(&data
->args
.stateid
, data
->args
.context
,
3805 data
->args
.lock_context
, FMODE_WRITE
);
3808 static void nfs4_proc_commit_rpc_prepare(struct rpc_task
*task
, struct nfs_commit_data
*data
)
3810 nfs4_setup_sequence(NFS_SERVER(data
->inode
),
3811 &data
->args
.seq_args
,
3816 static int nfs4_commit_done_cb(struct rpc_task
*task
, struct nfs_commit_data
*data
)
3818 struct inode
*inode
= data
->inode
;
3820 if (nfs4_async_handle_error(task
, NFS_SERVER(inode
), NULL
) == -EAGAIN
) {
3821 rpc_restart_call_prepare(task
);
3827 static int nfs4_commit_done(struct rpc_task
*task
, struct nfs_commit_data
*data
)
3829 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
3831 return data
->commit_done_cb(task
, data
);
3834 static void nfs4_proc_commit_setup(struct nfs_commit_data
*data
, struct rpc_message
*msg
)
3836 struct nfs_server
*server
= NFS_SERVER(data
->inode
);
3838 if (data
->commit_done_cb
== NULL
)
3839 data
->commit_done_cb
= nfs4_commit_done_cb
;
3840 data
->res
.server
= server
;
3841 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_COMMIT
];
3842 nfs41_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
3845 struct nfs4_renewdata
{
3846 struct nfs_client
*client
;
3847 unsigned long timestamp
;
3851 * nfs4_proc_async_renew(): This is not one of the nfs_rpc_ops; it is a special
3852 * standalone procedure for queueing an asynchronous RENEW.
3854 static void nfs4_renew_release(void *calldata
)
3856 struct nfs4_renewdata
*data
= calldata
;
3857 struct nfs_client
*clp
= data
->client
;
3859 if (atomic_read(&clp
->cl_count
) > 1)
3860 nfs4_schedule_state_renewal(clp
);
3861 nfs_put_client(clp
);
3865 static void nfs4_renew_done(struct rpc_task
*task
, void *calldata
)
3867 struct nfs4_renewdata
*data
= calldata
;
3868 struct nfs_client
*clp
= data
->client
;
3869 unsigned long timestamp
= data
->timestamp
;
3871 if (task
->tk_status
< 0) {
3872 /* Unless we're shutting down, schedule state recovery! */
3873 if (test_bit(NFS_CS_RENEWD
, &clp
->cl_res_state
) == 0)
3875 if (task
->tk_status
!= NFS4ERR_CB_PATH_DOWN
) {
3876 nfs4_schedule_lease_recovery(clp
);
3879 nfs4_schedule_path_down_recovery(clp
);
3881 do_renew_lease(clp
, timestamp
);
3884 static const struct rpc_call_ops nfs4_renew_ops
= {
3885 .rpc_call_done
= nfs4_renew_done
,
3886 .rpc_release
= nfs4_renew_release
,
3889 static int nfs4_proc_async_renew(struct nfs_client
*clp
, struct rpc_cred
*cred
, unsigned renew_flags
)
3891 struct rpc_message msg
= {
3892 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENEW
],
3896 struct nfs4_renewdata
*data
;
3898 if (renew_flags
== 0)
3900 if (!atomic_inc_not_zero(&clp
->cl_count
))
3902 data
= kmalloc(sizeof(*data
), GFP_NOFS
);
3906 data
->timestamp
= jiffies
;
3907 return rpc_call_async(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
,
3908 &nfs4_renew_ops
, data
);
3911 static int nfs4_proc_renew(struct nfs_client
*clp
, struct rpc_cred
*cred
)
3913 struct rpc_message msg
= {
3914 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENEW
],
3918 unsigned long now
= jiffies
;
3921 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
3924 do_renew_lease(clp
, now
);
3928 static inline int nfs4_server_supports_acls(struct nfs_server
*server
)
3930 return (server
->caps
& NFS_CAP_ACLS
)
3931 && (server
->acl_bitmask
& ACL4_SUPPORT_ALLOW_ACL
)
3932 && (server
->acl_bitmask
& ACL4_SUPPORT_DENY_ACL
);
3935 /* Assuming that XATTR_SIZE_MAX is a multiple of PAGE_SIZE, and that
3936 * it's OK to put sizeof(void) * (XATTR_SIZE_MAX/PAGE_SIZE) bytes on
3939 #define NFS4ACL_MAXPAGES DIV_ROUND_UP(XATTR_SIZE_MAX, PAGE_SIZE)
3941 static int buf_to_pages_noslab(const void *buf
, size_t buflen
,
3942 struct page
**pages
, unsigned int *pgbase
)
3944 struct page
*newpage
, **spages
;
3950 len
= min_t(size_t, PAGE_SIZE
, buflen
);
3951 newpage
= alloc_page(GFP_KERNEL
);
3953 if (newpage
== NULL
)
3955 memcpy(page_address(newpage
), buf
, len
);
3960 } while (buflen
!= 0);
3966 __free_page(spages
[rc
-1]);
3970 struct nfs4_cached_acl
{
3976 static void nfs4_set_cached_acl(struct inode
*inode
, struct nfs4_cached_acl
*acl
)
3978 struct nfs_inode
*nfsi
= NFS_I(inode
);
3980 spin_lock(&inode
->i_lock
);
3981 kfree(nfsi
->nfs4_acl
);
3982 nfsi
->nfs4_acl
= acl
;
3983 spin_unlock(&inode
->i_lock
);
3986 static void nfs4_zap_acl_attr(struct inode
*inode
)
3988 nfs4_set_cached_acl(inode
, NULL
);
3991 static inline ssize_t
nfs4_read_cached_acl(struct inode
*inode
, char *buf
, size_t buflen
)
3993 struct nfs_inode
*nfsi
= NFS_I(inode
);
3994 struct nfs4_cached_acl
*acl
;
3997 spin_lock(&inode
->i_lock
);
3998 acl
= nfsi
->nfs4_acl
;
4001 if (buf
== NULL
) /* user is just asking for length */
4003 if (acl
->cached
== 0)
4005 ret
= -ERANGE
; /* see getxattr(2) man page */
4006 if (acl
->len
> buflen
)
4008 memcpy(buf
, acl
->data
, acl
->len
);
4012 spin_unlock(&inode
->i_lock
);
4016 static void nfs4_write_cached_acl(struct inode
*inode
, struct page
**pages
, size_t pgbase
, size_t acl_len
)
4018 struct nfs4_cached_acl
*acl
;
4019 size_t buflen
= sizeof(*acl
) + acl_len
;
4021 if (buflen
<= PAGE_SIZE
) {
4022 acl
= kmalloc(buflen
, GFP_KERNEL
);
4026 _copy_from_pages(acl
->data
, pages
, pgbase
, acl_len
);
4028 acl
= kmalloc(sizeof(*acl
), GFP_KERNEL
);
4035 nfs4_set_cached_acl(inode
, acl
);
4039 * The getxattr API returns the required buffer length when called with a
4040 * NULL buf. The NFSv4 acl tool then calls getxattr again after allocating
4041 * the required buf. On a NULL buf, we send a page of data to the server
4042 * guessing that the ACL request can be serviced by a page. If so, we cache
4043 * up to the page of ACL data, and the 2nd call to getxattr is serviced by
4044 * the cache. If not so, we throw away the page, and cache the required
4045 * length. The next getxattr call will then produce another round trip to
4046 * the server, this time with the input buf of the required size.
4048 static ssize_t
__nfs4_get_acl_uncached(struct inode
*inode
, void *buf
, size_t buflen
)
4050 struct page
*pages
[NFS4ACL_MAXPAGES
] = {NULL
, };
4051 struct nfs_getaclargs args
= {
4052 .fh
= NFS_FH(inode
),
4056 struct nfs_getaclres res
= {
4059 struct rpc_message msg
= {
4060 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETACL
],
4064 unsigned int npages
= DIV_ROUND_UP(buflen
, PAGE_SIZE
);
4065 int ret
= -ENOMEM
, i
;
4067 /* As long as we're doing a round trip to the server anyway,
4068 * let's be prepared for a page of acl data. */
4071 if (npages
> ARRAY_SIZE(pages
))
4074 for (i
= 0; i
< npages
; i
++) {
4075 pages
[i
] = alloc_page(GFP_KERNEL
);
4080 /* for decoding across pages */
4081 res
.acl_scratch
= alloc_page(GFP_KERNEL
);
4082 if (!res
.acl_scratch
)
4085 args
.acl_len
= npages
* PAGE_SIZE
;
4086 args
.acl_pgbase
= 0;
4088 dprintk("%s buf %p buflen %zu npages %d args.acl_len %zu\n",
4089 __func__
, buf
, buflen
, npages
, args
.acl_len
);
4090 ret
= nfs4_call_sync(NFS_SERVER(inode
)->client
, NFS_SERVER(inode
),
4091 &msg
, &args
.seq_args
, &res
.seq_res
, 0);
4095 /* Handle the case where the passed-in buffer is too short */
4096 if (res
.acl_flags
& NFS4_ACL_TRUNC
) {
4097 /* Did the user only issue a request for the acl length? */
4103 nfs4_write_cached_acl(inode
, pages
, res
.acl_data_offset
, res
.acl_len
);
4105 if (res
.acl_len
> buflen
) {
4109 _copy_from_pages(buf
, pages
, res
.acl_data_offset
, res
.acl_len
);
4114 for (i
= 0; i
< npages
; i
++)
4116 __free_page(pages
[i
]);
4117 if (res
.acl_scratch
)
4118 __free_page(res
.acl_scratch
);
4122 static ssize_t
nfs4_get_acl_uncached(struct inode
*inode
, void *buf
, size_t buflen
)
4124 struct nfs4_exception exception
= { };
4127 ret
= __nfs4_get_acl_uncached(inode
, buf
, buflen
);
4130 ret
= nfs4_handle_exception(NFS_SERVER(inode
), ret
, &exception
);
4131 } while (exception
.retry
);
4135 static ssize_t
nfs4_proc_get_acl(struct inode
*inode
, void *buf
, size_t buflen
)
4137 struct nfs_server
*server
= NFS_SERVER(inode
);
4140 if (!nfs4_server_supports_acls(server
))
4142 ret
= nfs_revalidate_inode(server
, inode
);
4145 if (NFS_I(inode
)->cache_validity
& NFS_INO_INVALID_ACL
)
4146 nfs_zap_acl_cache(inode
);
4147 ret
= nfs4_read_cached_acl(inode
, buf
, buflen
);
4149 /* -ENOENT is returned if there is no ACL or if there is an ACL
4150 * but no cached acl data, just the acl length */
4152 return nfs4_get_acl_uncached(inode
, buf
, buflen
);
4155 static int __nfs4_proc_set_acl(struct inode
*inode
, const void *buf
, size_t buflen
)
4157 struct nfs_server
*server
= NFS_SERVER(inode
);
4158 struct page
*pages
[NFS4ACL_MAXPAGES
];
4159 struct nfs_setaclargs arg
= {
4160 .fh
= NFS_FH(inode
),
4164 struct nfs_setaclres res
;
4165 struct rpc_message msg
= {
4166 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETACL
],
4170 unsigned int npages
= DIV_ROUND_UP(buflen
, PAGE_SIZE
);
4173 if (!nfs4_server_supports_acls(server
))
4175 if (npages
> ARRAY_SIZE(pages
))
4177 i
= buf_to_pages_noslab(buf
, buflen
, arg
.acl_pages
, &arg
.acl_pgbase
);
4180 nfs4_inode_return_delegation(inode
);
4181 ret
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
4184 * Free each page after tx, so the only ref left is
4185 * held by the network stack
4188 put_page(pages
[i
-1]);
4191 * Acl update can result in inode attribute update.
4192 * so mark the attribute cache invalid.
4194 spin_lock(&inode
->i_lock
);
4195 NFS_I(inode
)->cache_validity
|= NFS_INO_INVALID_ATTR
;
4196 spin_unlock(&inode
->i_lock
);
4197 nfs_access_zap_cache(inode
);
4198 nfs_zap_acl_cache(inode
);
4202 static int nfs4_proc_set_acl(struct inode
*inode
, const void *buf
, size_t buflen
)
4204 struct nfs4_exception exception
= { };
4207 err
= nfs4_handle_exception(NFS_SERVER(inode
),
4208 __nfs4_proc_set_acl(inode
, buf
, buflen
),
4210 } while (exception
.retry
);
4215 nfs4_async_handle_error(struct rpc_task
*task
, const struct nfs_server
*server
, struct nfs4_state
*state
)
4217 struct nfs_client
*clp
= server
->nfs_client
;
4219 if (task
->tk_status
>= 0)
4221 switch(task
->tk_status
) {
4222 case -NFS4ERR_DELEG_REVOKED
:
4223 case -NFS4ERR_ADMIN_REVOKED
:
4224 case -NFS4ERR_BAD_STATEID
:
4227 nfs_remove_bad_delegation(state
->inode
);
4228 case -NFS4ERR_OPENMODE
:
4231 if (nfs4_schedule_stateid_recovery(server
, state
) < 0)
4232 goto stateid_invalid
;
4233 goto wait_on_recovery
;
4234 case -NFS4ERR_EXPIRED
:
4235 if (state
!= NULL
) {
4236 if (nfs4_schedule_stateid_recovery(server
, state
) < 0)
4237 goto stateid_invalid
;
4239 case -NFS4ERR_STALE_STATEID
:
4240 case -NFS4ERR_STALE_CLIENTID
:
4241 nfs4_schedule_lease_recovery(clp
);
4242 goto wait_on_recovery
;
4243 #if defined(CONFIG_NFS_V4_1)
4244 case -NFS4ERR_BADSESSION
:
4245 case -NFS4ERR_BADSLOT
:
4246 case -NFS4ERR_BAD_HIGH_SLOT
:
4247 case -NFS4ERR_DEADSESSION
:
4248 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
4249 case -NFS4ERR_SEQ_FALSE_RETRY
:
4250 case -NFS4ERR_SEQ_MISORDERED
:
4251 dprintk("%s ERROR %d, Reset session\n", __func__
,
4253 nfs4_schedule_session_recovery(clp
->cl_session
, task
->tk_status
);
4254 goto wait_on_recovery
;
4255 #endif /* CONFIG_NFS_V4_1 */
4256 case -NFS4ERR_DELAY
:
4257 nfs_inc_server_stats(server
, NFSIOS_DELAY
);
4258 case -NFS4ERR_GRACE
:
4259 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
4260 task
->tk_status
= 0;
4262 case -NFS4ERR_RETRY_UNCACHED_REP
:
4263 case -NFS4ERR_OLD_STATEID
:
4264 task
->tk_status
= 0;
4267 task
->tk_status
= nfs4_map_errors(task
->tk_status
);
4270 task
->tk_status
= -EIO
;
4273 rpc_sleep_on(&clp
->cl_rpcwaitq
, task
, NULL
);
4274 if (test_bit(NFS4CLNT_MANAGER_RUNNING
, &clp
->cl_state
) == 0)
4275 rpc_wake_up_queued_task(&clp
->cl_rpcwaitq
, task
);
4276 task
->tk_status
= 0;
4280 static void nfs4_init_boot_verifier(const struct nfs_client
*clp
,
4281 nfs4_verifier
*bootverf
)
4285 if (test_bit(NFS4CLNT_PURGE_STATE
, &clp
->cl_state
)) {
4286 /* An impossible timestamp guarantees this value
4287 * will never match a generated boot time. */
4289 verf
[1] = (__be32
)(NSEC_PER_SEC
+ 1);
4291 struct nfs_net
*nn
= net_generic(clp
->cl_net
, nfs_net_id
);
4292 verf
[0] = (__be32
)nn
->boot_time
.tv_sec
;
4293 verf
[1] = (__be32
)nn
->boot_time
.tv_nsec
;
4295 memcpy(bootverf
->data
, verf
, sizeof(bootverf
->data
));
4299 nfs4_init_nonuniform_client_string(const struct nfs_client
*clp
,
4300 char *buf
, size_t len
)
4302 unsigned int result
;
4305 result
= scnprintf(buf
, len
, "Linux NFSv4.0 %s/%s %s",
4307 rpc_peeraddr2str(clp
->cl_rpcclient
,
4309 rpc_peeraddr2str(clp
->cl_rpcclient
,
4310 RPC_DISPLAY_PROTO
));
4316 nfs4_init_uniform_client_string(const struct nfs_client
*clp
,
4317 char *buf
, size_t len
)
4319 char *nodename
= clp
->cl_rpcclient
->cl_nodename
;
4321 if (nfs4_client_id_uniquifier
[0] != '\0')
4322 nodename
= nfs4_client_id_uniquifier
;
4323 return scnprintf(buf
, len
, "Linux NFSv%u.%u %s",
4324 clp
->rpc_ops
->version
, clp
->cl_minorversion
,
4329 * nfs4_proc_setclientid - Negotiate client ID
4330 * @clp: state data structure
4331 * @program: RPC program for NFSv4 callback service
4332 * @port: IP port number for NFS4 callback service
4333 * @cred: RPC credential to use for this call
4334 * @res: where to place the result
4336 * Returns zero, a negative errno, or a negative NFS4ERR status code.
4338 int nfs4_proc_setclientid(struct nfs_client
*clp
, u32 program
,
4339 unsigned short port
, struct rpc_cred
*cred
,
4340 struct nfs4_setclientid_res
*res
)
4342 nfs4_verifier sc_verifier
;
4343 struct nfs4_setclientid setclientid
= {
4344 .sc_verifier
= &sc_verifier
,
4346 .sc_cb_ident
= clp
->cl_cb_ident
,
4348 struct rpc_message msg
= {
4349 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETCLIENTID
],
4350 .rpc_argp
= &setclientid
,
4356 /* nfs_client_id4 */
4357 nfs4_init_boot_verifier(clp
, &sc_verifier
);
4358 if (test_bit(NFS_CS_MIGRATION
, &clp
->cl_flags
))
4359 setclientid
.sc_name_len
=
4360 nfs4_init_uniform_client_string(clp
,
4361 setclientid
.sc_name
,
4362 sizeof(setclientid
.sc_name
));
4364 setclientid
.sc_name_len
=
4365 nfs4_init_nonuniform_client_string(clp
,
4366 setclientid
.sc_name
,
4367 sizeof(setclientid
.sc_name
));
4370 setclientid
.sc_netid_len
= scnprintf(setclientid
.sc_netid
,
4371 sizeof(setclientid
.sc_netid
),
4372 rpc_peeraddr2str(clp
->cl_rpcclient
,
4373 RPC_DISPLAY_NETID
));
4375 setclientid
.sc_uaddr_len
= scnprintf(setclientid
.sc_uaddr
,
4376 sizeof(setclientid
.sc_uaddr
), "%s.%u.%u",
4377 clp
->cl_ipaddr
, port
>> 8, port
& 255);
4379 dprintk("NFS call setclientid auth=%s, '%.*s'\n",
4380 clp
->cl_rpcclient
->cl_auth
->au_ops
->au_name
,
4381 setclientid
.sc_name_len
, setclientid
.sc_name
);
4382 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
4383 dprintk("NFS reply setclientid: %d\n", status
);
4388 * nfs4_proc_setclientid_confirm - Confirm client ID
4389 * @clp: state data structure
4390 * @res: result of a previous SETCLIENTID
4391 * @cred: RPC credential to use for this call
4393 * Returns zero, a negative errno, or a negative NFS4ERR status code.
4395 int nfs4_proc_setclientid_confirm(struct nfs_client
*clp
,
4396 struct nfs4_setclientid_res
*arg
,
4397 struct rpc_cred
*cred
)
4399 struct rpc_message msg
= {
4400 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETCLIENTID_CONFIRM
],
4406 dprintk("NFS call setclientid_confirm auth=%s, (client ID %llx)\n",
4407 clp
->cl_rpcclient
->cl_auth
->au_ops
->au_name
,
4409 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
4410 dprintk("NFS reply setclientid_confirm: %d\n", status
);
4414 struct nfs4_delegreturndata
{
4415 struct nfs4_delegreturnargs args
;
4416 struct nfs4_delegreturnres res
;
4418 nfs4_stateid stateid
;
4419 unsigned long timestamp
;
4420 struct nfs_fattr fattr
;
4424 static void nfs4_delegreturn_done(struct rpc_task
*task
, void *calldata
)
4426 struct nfs4_delegreturndata
*data
= calldata
;
4428 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
4431 switch (task
->tk_status
) {
4433 renew_lease(data
->res
.server
, data
->timestamp
);
4435 case -NFS4ERR_ADMIN_REVOKED
:
4436 case -NFS4ERR_DELEG_REVOKED
:
4437 case -NFS4ERR_BAD_STATEID
:
4438 case -NFS4ERR_OLD_STATEID
:
4439 case -NFS4ERR_STALE_STATEID
:
4440 case -NFS4ERR_EXPIRED
:
4441 task
->tk_status
= 0;
4444 if (nfs4_async_handle_error(task
, data
->res
.server
, NULL
) ==
4446 rpc_restart_call_prepare(task
);
4450 data
->rpc_status
= task
->tk_status
;
4453 static void nfs4_delegreturn_release(void *calldata
)
4458 #if defined(CONFIG_NFS_V4_1)
4459 static void nfs4_delegreturn_prepare(struct rpc_task
*task
, void *data
)
4461 struct nfs4_delegreturndata
*d_data
;
4463 d_data
= (struct nfs4_delegreturndata
*)data
;
4465 nfs4_setup_sequence(d_data
->res
.server
,
4466 &d_data
->args
.seq_args
,
4467 &d_data
->res
.seq_res
,
4470 #endif /* CONFIG_NFS_V4_1 */
4472 static const struct rpc_call_ops nfs4_delegreturn_ops
= {
4473 #if defined(CONFIG_NFS_V4_1)
4474 .rpc_call_prepare
= nfs4_delegreturn_prepare
,
4475 #endif /* CONFIG_NFS_V4_1 */
4476 .rpc_call_done
= nfs4_delegreturn_done
,
4477 .rpc_release
= nfs4_delegreturn_release
,
4480 static int _nfs4_proc_delegreturn(struct inode
*inode
, struct rpc_cred
*cred
, const nfs4_stateid
*stateid
, int issync
)
4482 struct nfs4_delegreturndata
*data
;
4483 struct nfs_server
*server
= NFS_SERVER(inode
);
4484 struct rpc_task
*task
;
4485 struct rpc_message msg
= {
4486 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DELEGRETURN
],
4489 struct rpc_task_setup task_setup_data
= {
4490 .rpc_client
= server
->client
,
4491 .rpc_message
= &msg
,
4492 .callback_ops
= &nfs4_delegreturn_ops
,
4493 .flags
= RPC_TASK_ASYNC
,
4497 data
= kzalloc(sizeof(*data
), GFP_NOFS
);
4500 nfs41_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
4501 data
->args
.fhandle
= &data
->fh
;
4502 data
->args
.stateid
= &data
->stateid
;
4503 data
->args
.bitmask
= server
->cache_consistency_bitmask
;
4504 nfs_copy_fh(&data
->fh
, NFS_FH(inode
));
4505 nfs4_stateid_copy(&data
->stateid
, stateid
);
4506 data
->res
.fattr
= &data
->fattr
;
4507 data
->res
.server
= server
;
4508 nfs_fattr_init(data
->res
.fattr
);
4509 data
->timestamp
= jiffies
;
4510 data
->rpc_status
= 0;
4512 task_setup_data
.callback_data
= data
;
4513 msg
.rpc_argp
= &data
->args
;
4514 msg
.rpc_resp
= &data
->res
;
4515 task
= rpc_run_task(&task_setup_data
);
4517 return PTR_ERR(task
);
4520 status
= nfs4_wait_for_completion_rpc_task(task
);
4523 status
= data
->rpc_status
;
4525 nfs_post_op_update_inode_force_wcc(inode
, &data
->fattr
);
4527 nfs_refresh_inode(inode
, &data
->fattr
);
4533 int nfs4_proc_delegreturn(struct inode
*inode
, struct rpc_cred
*cred
, const nfs4_stateid
*stateid
, int issync
)
4535 struct nfs_server
*server
= NFS_SERVER(inode
);
4536 struct nfs4_exception exception
= { };
4539 err
= _nfs4_proc_delegreturn(inode
, cred
, stateid
, issync
);
4541 case -NFS4ERR_STALE_STATEID
:
4542 case -NFS4ERR_EXPIRED
:
4546 err
= nfs4_handle_exception(server
, err
, &exception
);
4547 } while (exception
.retry
);
4551 #define NFS4_LOCK_MINTIMEOUT (1 * HZ)
4552 #define NFS4_LOCK_MAXTIMEOUT (30 * HZ)
4555 * sleep, with exponential backoff, and retry the LOCK operation.
4557 static unsigned long
4558 nfs4_set_lock_task_retry(unsigned long timeout
)
4560 freezable_schedule_timeout_killable_unsafe(timeout
);
4562 if (timeout
> NFS4_LOCK_MAXTIMEOUT
)
4563 return NFS4_LOCK_MAXTIMEOUT
;
4567 static int _nfs4_proc_getlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
4569 struct inode
*inode
= state
->inode
;
4570 struct nfs_server
*server
= NFS_SERVER(inode
);
4571 struct nfs_client
*clp
= server
->nfs_client
;
4572 struct nfs_lockt_args arg
= {
4573 .fh
= NFS_FH(inode
),
4576 struct nfs_lockt_res res
= {
4579 struct rpc_message msg
= {
4580 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCKT
],
4583 .rpc_cred
= state
->owner
->so_cred
,
4585 struct nfs4_lock_state
*lsp
;
4588 arg
.lock_owner
.clientid
= clp
->cl_clientid
;
4589 status
= nfs4_set_lock_state(state
, request
);
4592 lsp
= request
->fl_u
.nfs4_fl
.owner
;
4593 arg
.lock_owner
.id
= lsp
->ls_seqid
.owner_id
;
4594 arg
.lock_owner
.s_dev
= server
->s_dev
;
4595 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
4598 request
->fl_type
= F_UNLCK
;
4600 case -NFS4ERR_DENIED
:
4603 request
->fl_ops
->fl_release_private(request
);
4604 request
->fl_ops
= NULL
;
4609 static int nfs4_proc_getlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
4611 struct nfs4_exception exception
= { };
4615 err
= nfs4_handle_exception(NFS_SERVER(state
->inode
),
4616 _nfs4_proc_getlk(state
, cmd
, request
),
4618 } while (exception
.retry
);
4622 static int do_vfs_lock(struct file
*file
, struct file_lock
*fl
)
4625 switch (fl
->fl_flags
& (FL_POSIX
|FL_FLOCK
)) {
4627 res
= posix_lock_file_wait(file
, fl
);
4630 res
= flock_lock_file_wait(file
, fl
);
4638 struct nfs4_unlockdata
{
4639 struct nfs_locku_args arg
;
4640 struct nfs_locku_res res
;
4641 struct nfs4_lock_state
*lsp
;
4642 struct nfs_open_context
*ctx
;
4643 struct file_lock fl
;
4644 const struct nfs_server
*server
;
4645 unsigned long timestamp
;
4648 static struct nfs4_unlockdata
*nfs4_alloc_unlockdata(struct file_lock
*fl
,
4649 struct nfs_open_context
*ctx
,
4650 struct nfs4_lock_state
*lsp
,
4651 struct nfs_seqid
*seqid
)
4653 struct nfs4_unlockdata
*p
;
4654 struct inode
*inode
= lsp
->ls_state
->inode
;
4656 p
= kzalloc(sizeof(*p
), GFP_NOFS
);
4659 p
->arg
.fh
= NFS_FH(inode
);
4661 p
->arg
.seqid
= seqid
;
4662 p
->res
.seqid
= seqid
;
4663 p
->arg
.stateid
= &lsp
->ls_stateid
;
4665 atomic_inc(&lsp
->ls_count
);
4666 /* Ensure we don't close file until we're done freeing locks! */
4667 p
->ctx
= get_nfs_open_context(ctx
);
4668 memcpy(&p
->fl
, fl
, sizeof(p
->fl
));
4669 p
->server
= NFS_SERVER(inode
);
4673 static void nfs4_locku_release_calldata(void *data
)
4675 struct nfs4_unlockdata
*calldata
= data
;
4676 nfs_free_seqid(calldata
->arg
.seqid
);
4677 nfs4_put_lock_state(calldata
->lsp
);
4678 put_nfs_open_context(calldata
->ctx
);
4682 static void nfs4_locku_done(struct rpc_task
*task
, void *data
)
4684 struct nfs4_unlockdata
*calldata
= data
;
4686 if (!nfs4_sequence_done(task
, &calldata
->res
.seq_res
))
4688 switch (task
->tk_status
) {
4690 nfs4_stateid_copy(&calldata
->lsp
->ls_stateid
,
4691 &calldata
->res
.stateid
);
4692 renew_lease(calldata
->server
, calldata
->timestamp
);
4694 case -NFS4ERR_BAD_STATEID
:
4695 case -NFS4ERR_OLD_STATEID
:
4696 case -NFS4ERR_STALE_STATEID
:
4697 case -NFS4ERR_EXPIRED
:
4700 if (nfs4_async_handle_error(task
, calldata
->server
, NULL
) == -EAGAIN
)
4701 rpc_restart_call_prepare(task
);
4703 nfs_release_seqid(calldata
->arg
.seqid
);
4706 static void nfs4_locku_prepare(struct rpc_task
*task
, void *data
)
4708 struct nfs4_unlockdata
*calldata
= data
;
4710 if (nfs_wait_on_sequence(calldata
->arg
.seqid
, task
) != 0)
4712 if (test_bit(NFS_LOCK_INITIALIZED
, &calldata
->lsp
->ls_flags
) == 0) {
4713 /* Note: exit _without_ running nfs4_locku_done */
4716 calldata
->timestamp
= jiffies
;
4717 if (nfs4_setup_sequence(calldata
->server
,
4718 &calldata
->arg
.seq_args
,
4719 &calldata
->res
.seq_res
,
4721 nfs_release_seqid(calldata
->arg
.seqid
);
4724 task
->tk_action
= NULL
;
4726 nfs4_sequence_done(task
, &calldata
->res
.seq_res
);
4729 static const struct rpc_call_ops nfs4_locku_ops
= {
4730 .rpc_call_prepare
= nfs4_locku_prepare
,
4731 .rpc_call_done
= nfs4_locku_done
,
4732 .rpc_release
= nfs4_locku_release_calldata
,
4735 static struct rpc_task
*nfs4_do_unlck(struct file_lock
*fl
,
4736 struct nfs_open_context
*ctx
,
4737 struct nfs4_lock_state
*lsp
,
4738 struct nfs_seqid
*seqid
)
4740 struct nfs4_unlockdata
*data
;
4741 struct rpc_message msg
= {
4742 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCKU
],
4743 .rpc_cred
= ctx
->cred
,
4745 struct rpc_task_setup task_setup_data
= {
4746 .rpc_client
= NFS_CLIENT(lsp
->ls_state
->inode
),
4747 .rpc_message
= &msg
,
4748 .callback_ops
= &nfs4_locku_ops
,
4749 .workqueue
= nfsiod_workqueue
,
4750 .flags
= RPC_TASK_ASYNC
,
4753 /* Ensure this is an unlock - when canceling a lock, the
4754 * canceled lock is passed in, and it won't be an unlock.
4756 fl
->fl_type
= F_UNLCK
;
4758 data
= nfs4_alloc_unlockdata(fl
, ctx
, lsp
, seqid
);
4760 nfs_free_seqid(seqid
);
4761 return ERR_PTR(-ENOMEM
);
4764 nfs41_init_sequence(&data
->arg
.seq_args
, &data
->res
.seq_res
, 1);
4765 msg
.rpc_argp
= &data
->arg
;
4766 msg
.rpc_resp
= &data
->res
;
4767 task_setup_data
.callback_data
= data
;
4768 return rpc_run_task(&task_setup_data
);
4771 static int nfs4_proc_unlck(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
4773 struct inode
*inode
= state
->inode
;
4774 struct nfs4_state_owner
*sp
= state
->owner
;
4775 struct nfs_inode
*nfsi
= NFS_I(inode
);
4776 struct nfs_seqid
*seqid
;
4777 struct nfs4_lock_state
*lsp
;
4778 struct rpc_task
*task
;
4780 unsigned char fl_flags
= request
->fl_flags
;
4782 status
= nfs4_set_lock_state(state
, request
);
4783 /* Unlock _before_ we do the RPC call */
4784 request
->fl_flags
|= FL_EXISTS
;
4785 /* Exclude nfs_delegation_claim_locks() */
4786 mutex_lock(&sp
->so_delegreturn_mutex
);
4787 /* Exclude nfs4_reclaim_open_stateid() - note nesting! */
4788 down_read(&nfsi
->rwsem
);
4789 if (do_vfs_lock(request
->fl_file
, request
) == -ENOENT
) {
4790 up_read(&nfsi
->rwsem
);
4791 mutex_unlock(&sp
->so_delegreturn_mutex
);
4794 up_read(&nfsi
->rwsem
);
4795 mutex_unlock(&sp
->so_delegreturn_mutex
);
4798 /* Is this a delegated lock? */
4799 lsp
= request
->fl_u
.nfs4_fl
.owner
;
4800 if (test_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
) == 0)
4802 seqid
= nfs_alloc_seqid(&lsp
->ls_seqid
, GFP_KERNEL
);
4806 task
= nfs4_do_unlck(request
, nfs_file_open_context(request
->fl_file
), lsp
, seqid
);
4807 status
= PTR_ERR(task
);
4810 status
= nfs4_wait_for_completion_rpc_task(task
);
4813 request
->fl_flags
= fl_flags
;
4817 struct nfs4_lockdata
{
4818 struct nfs_lock_args arg
;
4819 struct nfs_lock_res res
;
4820 struct nfs4_lock_state
*lsp
;
4821 struct nfs_open_context
*ctx
;
4822 struct file_lock fl
;
4823 unsigned long timestamp
;
4826 struct nfs_server
*server
;
4829 static struct nfs4_lockdata
*nfs4_alloc_lockdata(struct file_lock
*fl
,
4830 struct nfs_open_context
*ctx
, struct nfs4_lock_state
*lsp
,
4833 struct nfs4_lockdata
*p
;
4834 struct inode
*inode
= lsp
->ls_state
->inode
;
4835 struct nfs_server
*server
= NFS_SERVER(inode
);
4837 p
= kzalloc(sizeof(*p
), gfp_mask
);
4841 p
->arg
.fh
= NFS_FH(inode
);
4843 p
->arg
.open_seqid
= nfs_alloc_seqid(&lsp
->ls_state
->owner
->so_seqid
, gfp_mask
);
4844 if (p
->arg
.open_seqid
== NULL
)
4846 p
->arg
.lock_seqid
= nfs_alloc_seqid(&lsp
->ls_seqid
, gfp_mask
);
4847 if (p
->arg
.lock_seqid
== NULL
)
4848 goto out_free_seqid
;
4849 p
->arg
.lock_stateid
= &lsp
->ls_stateid
;
4850 p
->arg
.lock_owner
.clientid
= server
->nfs_client
->cl_clientid
;
4851 p
->arg
.lock_owner
.id
= lsp
->ls_seqid
.owner_id
;
4852 p
->arg
.lock_owner
.s_dev
= server
->s_dev
;
4853 p
->res
.lock_seqid
= p
->arg
.lock_seqid
;
4856 atomic_inc(&lsp
->ls_count
);
4857 p
->ctx
= get_nfs_open_context(ctx
);
4858 memcpy(&p
->fl
, fl
, sizeof(p
->fl
));
4861 nfs_free_seqid(p
->arg
.open_seqid
);
4867 static void nfs4_lock_prepare(struct rpc_task
*task
, void *calldata
)
4869 struct nfs4_lockdata
*data
= calldata
;
4870 struct nfs4_state
*state
= data
->lsp
->ls_state
;
4872 dprintk("%s: begin!\n", __func__
);
4873 if (nfs_wait_on_sequence(data
->arg
.lock_seqid
, task
) != 0)
4875 /* Do we need to do an open_to_lock_owner? */
4876 if (!(data
->arg
.lock_seqid
->sequence
->flags
& NFS_SEQID_CONFIRMED
)) {
4877 if (nfs_wait_on_sequence(data
->arg
.open_seqid
, task
) != 0) {
4878 goto out_release_lock_seqid
;
4880 data
->arg
.open_stateid
= &state
->open_stateid
;
4881 data
->arg
.new_lock_owner
= 1;
4882 data
->res
.open_seqid
= data
->arg
.open_seqid
;
4884 data
->arg
.new_lock_owner
= 0;
4885 if (!nfs4_valid_open_stateid(state
)) {
4886 data
->rpc_status
= -EBADF
;
4887 task
->tk_action
= NULL
;
4888 goto out_release_open_seqid
;
4890 data
->timestamp
= jiffies
;
4891 if (nfs4_setup_sequence(data
->server
,
4892 &data
->arg
.seq_args
,
4896 out_release_open_seqid
:
4897 nfs_release_seqid(data
->arg
.open_seqid
);
4898 out_release_lock_seqid
:
4899 nfs_release_seqid(data
->arg
.lock_seqid
);
4901 nfs4_sequence_done(task
, &data
->res
.seq_res
);
4902 dprintk("%s: done!, ret = %d\n", __func__
, data
->rpc_status
);
4905 static void nfs4_lock_done(struct rpc_task
*task
, void *calldata
)
4907 struct nfs4_lockdata
*data
= calldata
;
4909 dprintk("%s: begin!\n", __func__
);
4911 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
4914 data
->rpc_status
= task
->tk_status
;
4915 if (data
->arg
.new_lock_owner
!= 0) {
4916 if (data
->rpc_status
== 0)
4917 nfs_confirm_seqid(&data
->lsp
->ls_seqid
, 0);
4921 if (data
->rpc_status
== 0) {
4922 nfs4_stateid_copy(&data
->lsp
->ls_stateid
, &data
->res
.stateid
);
4923 set_bit(NFS_LOCK_INITIALIZED
, &data
->lsp
->ls_flags
);
4924 renew_lease(NFS_SERVER(data
->ctx
->dentry
->d_inode
), data
->timestamp
);
4927 dprintk("%s: done, ret = %d!\n", __func__
, data
->rpc_status
);
4930 static void nfs4_lock_release(void *calldata
)
4932 struct nfs4_lockdata
*data
= calldata
;
4934 dprintk("%s: begin!\n", __func__
);
4935 nfs_free_seqid(data
->arg
.open_seqid
);
4936 if (data
->cancelled
!= 0) {
4937 struct rpc_task
*task
;
4938 task
= nfs4_do_unlck(&data
->fl
, data
->ctx
, data
->lsp
,
4939 data
->arg
.lock_seqid
);
4941 rpc_put_task_async(task
);
4942 dprintk("%s: cancelling lock!\n", __func__
);
4944 nfs_free_seqid(data
->arg
.lock_seqid
);
4945 nfs4_put_lock_state(data
->lsp
);
4946 put_nfs_open_context(data
->ctx
);
4948 dprintk("%s: done!\n", __func__
);
4951 static const struct rpc_call_ops nfs4_lock_ops
= {
4952 .rpc_call_prepare
= nfs4_lock_prepare
,
4953 .rpc_call_done
= nfs4_lock_done
,
4954 .rpc_release
= nfs4_lock_release
,
4957 static void nfs4_handle_setlk_error(struct nfs_server
*server
, struct nfs4_lock_state
*lsp
, int new_lock_owner
, int error
)
4960 case -NFS4ERR_ADMIN_REVOKED
:
4961 case -NFS4ERR_BAD_STATEID
:
4962 lsp
->ls_seqid
.flags
&= ~NFS_SEQID_CONFIRMED
;
4963 if (new_lock_owner
!= 0 ||
4964 test_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
) != 0)
4965 nfs4_schedule_stateid_recovery(server
, lsp
->ls_state
);
4967 case -NFS4ERR_STALE_STATEID
:
4968 lsp
->ls_seqid
.flags
&= ~NFS_SEQID_CONFIRMED
;
4969 case -NFS4ERR_EXPIRED
:
4970 nfs4_schedule_lease_recovery(server
->nfs_client
);
4974 static int _nfs4_do_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*fl
, int recovery_type
)
4976 struct nfs4_lockdata
*data
;
4977 struct rpc_task
*task
;
4978 struct rpc_message msg
= {
4979 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCK
],
4980 .rpc_cred
= state
->owner
->so_cred
,
4982 struct rpc_task_setup task_setup_data
= {
4983 .rpc_client
= NFS_CLIENT(state
->inode
),
4984 .rpc_message
= &msg
,
4985 .callback_ops
= &nfs4_lock_ops
,
4986 .workqueue
= nfsiod_workqueue
,
4987 .flags
= RPC_TASK_ASYNC
,
4991 dprintk("%s: begin!\n", __func__
);
4992 data
= nfs4_alloc_lockdata(fl
, nfs_file_open_context(fl
->fl_file
),
4993 fl
->fl_u
.nfs4_fl
.owner
,
4994 recovery_type
== NFS_LOCK_NEW
? GFP_KERNEL
: GFP_NOFS
);
4998 data
->arg
.block
= 1;
4999 nfs41_init_sequence(&data
->arg
.seq_args
, &data
->res
.seq_res
, 1);
5000 msg
.rpc_argp
= &data
->arg
;
5001 msg
.rpc_resp
= &data
->res
;
5002 task_setup_data
.callback_data
= data
;
5003 if (recovery_type
> NFS_LOCK_NEW
) {
5004 if (recovery_type
== NFS_LOCK_RECLAIM
)
5005 data
->arg
.reclaim
= NFS_LOCK_RECLAIM
;
5006 nfs4_set_sequence_privileged(&data
->arg
.seq_args
);
5008 task
= rpc_run_task(&task_setup_data
);
5010 return PTR_ERR(task
);
5011 ret
= nfs4_wait_for_completion_rpc_task(task
);
5013 ret
= data
->rpc_status
;
5015 nfs4_handle_setlk_error(data
->server
, data
->lsp
,
5016 data
->arg
.new_lock_owner
, ret
);
5018 data
->cancelled
= 1;
5020 dprintk("%s: done, ret = %d!\n", __func__
, ret
);
5024 static int nfs4_lock_reclaim(struct nfs4_state
*state
, struct file_lock
*request
)
5026 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
5027 struct nfs4_exception exception
= {
5028 .inode
= state
->inode
,
5033 /* Cache the lock if possible... */
5034 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) != 0)
5036 err
= _nfs4_do_setlk(state
, F_SETLK
, request
, NFS_LOCK_RECLAIM
);
5037 if (err
!= -NFS4ERR_DELAY
)
5039 nfs4_handle_exception(server
, err
, &exception
);
5040 } while (exception
.retry
);
5044 static int nfs4_lock_expired(struct nfs4_state
*state
, struct file_lock
*request
)
5046 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
5047 struct nfs4_exception exception
= {
5048 .inode
= state
->inode
,
5052 err
= nfs4_set_lock_state(state
, request
);
5056 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) != 0)
5058 err
= _nfs4_do_setlk(state
, F_SETLK
, request
, NFS_LOCK_EXPIRED
);
5062 case -NFS4ERR_GRACE
:
5063 case -NFS4ERR_DELAY
:
5064 nfs4_handle_exception(server
, err
, &exception
);
5067 } while (exception
.retry
);
5072 #if defined(CONFIG_NFS_V4_1)
5074 * nfs41_check_expired_locks - possibly free a lock stateid
5076 * @state: NFSv4 state for an inode
5078 * Returns NFS_OK if recovery for this stateid is now finished.
5079 * Otherwise a negative NFS4ERR value is returned.
5081 static int nfs41_check_expired_locks(struct nfs4_state
*state
)
5083 int status
, ret
= -NFS4ERR_BAD_STATEID
;
5084 struct nfs4_lock_state
*lsp
;
5085 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
5087 list_for_each_entry(lsp
, &state
->lock_states
, ls_locks
) {
5088 if (test_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
)) {
5089 status
= nfs41_test_stateid(server
, &lsp
->ls_stateid
);
5090 if (status
!= NFS_OK
) {
5091 /* Free the stateid unless the server
5092 * informs us the stateid is unrecognized. */
5093 if (status
!= -NFS4ERR_BAD_STATEID
)
5094 nfs41_free_stateid(server
,
5096 clear_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
);
5105 static int nfs41_lock_expired(struct nfs4_state
*state
, struct file_lock
*request
)
5107 int status
= NFS_OK
;
5109 if (test_bit(LK_STATE_IN_USE
, &state
->flags
))
5110 status
= nfs41_check_expired_locks(state
);
5111 if (status
!= NFS_OK
)
5112 status
= nfs4_lock_expired(state
, request
);
5117 static int _nfs4_proc_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
5119 struct nfs4_state_owner
*sp
= state
->owner
;
5120 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
5121 unsigned char fl_flags
= request
->fl_flags
;
5123 int status
= -ENOLCK
;
5125 if ((fl_flags
& FL_POSIX
) &&
5126 !test_bit(NFS_STATE_POSIX_LOCKS
, &state
->flags
))
5128 /* Is this a delegated open? */
5129 status
= nfs4_set_lock_state(state
, request
);
5132 request
->fl_flags
|= FL_ACCESS
;
5133 status
= do_vfs_lock(request
->fl_file
, request
);
5136 down_read(&nfsi
->rwsem
);
5137 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
)) {
5138 /* Yes: cache locks! */
5139 /* ...but avoid races with delegation recall... */
5140 request
->fl_flags
= fl_flags
& ~FL_SLEEP
;
5141 status
= do_vfs_lock(request
->fl_file
, request
);
5144 seq
= raw_seqcount_begin(&sp
->so_reclaim_seqcount
);
5145 up_read(&nfsi
->rwsem
);
5146 status
= _nfs4_do_setlk(state
, cmd
, request
, NFS_LOCK_NEW
);
5149 down_read(&nfsi
->rwsem
);
5150 if (read_seqcount_retry(&sp
->so_reclaim_seqcount
, seq
)) {
5151 status
= -NFS4ERR_DELAY
;
5154 /* Note: we always want to sleep here! */
5155 request
->fl_flags
= fl_flags
| FL_SLEEP
;
5156 if (do_vfs_lock(request
->fl_file
, request
) < 0)
5157 printk(KERN_WARNING
"NFS: %s: VFS is out of sync with lock "
5158 "manager!\n", __func__
);
5160 up_read(&nfsi
->rwsem
);
5162 request
->fl_flags
= fl_flags
;
5166 static int nfs4_proc_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
5168 struct nfs4_exception exception
= {
5170 .inode
= state
->inode
,
5175 err
= _nfs4_proc_setlk(state
, cmd
, request
);
5176 if (err
== -NFS4ERR_DENIED
)
5178 err
= nfs4_handle_exception(NFS_SERVER(state
->inode
),
5180 } while (exception
.retry
);
5185 nfs4_proc_lock(struct file
*filp
, int cmd
, struct file_lock
*request
)
5187 struct nfs_open_context
*ctx
;
5188 struct nfs4_state
*state
;
5189 unsigned long timeout
= NFS4_LOCK_MINTIMEOUT
;
5192 /* verify open state */
5193 ctx
= nfs_file_open_context(filp
);
5196 if (request
->fl_start
< 0 || request
->fl_end
< 0)
5199 if (IS_GETLK(cmd
)) {
5201 return nfs4_proc_getlk(state
, F_GETLK
, request
);
5205 if (!(IS_SETLK(cmd
) || IS_SETLKW(cmd
)))
5208 if (request
->fl_type
== F_UNLCK
) {
5210 return nfs4_proc_unlck(state
, cmd
, request
);
5217 * Don't rely on the VFS having checked the file open mode,
5218 * since it won't do this for flock() locks.
5220 switch (request
->fl_type
) {
5222 if (!(filp
->f_mode
& FMODE_READ
))
5226 if (!(filp
->f_mode
& FMODE_WRITE
))
5231 status
= nfs4_proc_setlk(state
, cmd
, request
);
5232 if ((status
!= -EAGAIN
) || IS_SETLK(cmd
))
5234 timeout
= nfs4_set_lock_task_retry(timeout
);
5235 status
= -ERESTARTSYS
;
5238 } while(status
< 0);
5242 int nfs4_lock_delegation_recall(struct file_lock
*fl
, struct nfs4_state
*state
, const nfs4_stateid
*stateid
)
5244 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
5247 err
= nfs4_set_lock_state(state
, fl
);
5250 err
= _nfs4_do_setlk(state
, F_SETLK
, fl
, NFS_LOCK_NEW
);
5251 return nfs4_handle_delegation_recall_error(server
, state
, stateid
, err
);
5254 struct nfs_release_lockowner_data
{
5255 struct nfs4_lock_state
*lsp
;
5256 struct nfs_server
*server
;
5257 struct nfs_release_lockowner_args args
;
5260 static void nfs4_release_lockowner_release(void *calldata
)
5262 struct nfs_release_lockowner_data
*data
= calldata
;
5263 nfs4_free_lock_state(data
->server
, data
->lsp
);
5267 static const struct rpc_call_ops nfs4_release_lockowner_ops
= {
5268 .rpc_release
= nfs4_release_lockowner_release
,
5271 static int nfs4_release_lockowner(struct nfs_server
*server
, struct nfs4_lock_state
*lsp
)
5273 struct nfs_release_lockowner_data
*data
;
5274 struct rpc_message msg
= {
5275 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RELEASE_LOCKOWNER
],
5278 if (server
->nfs_client
->cl_mvops
->minor_version
!= 0)
5280 data
= kmalloc(sizeof(*data
), GFP_NOFS
);
5284 data
->server
= server
;
5285 data
->args
.lock_owner
.clientid
= server
->nfs_client
->cl_clientid
;
5286 data
->args
.lock_owner
.id
= lsp
->ls_seqid
.owner_id
;
5287 data
->args
.lock_owner
.s_dev
= server
->s_dev
;
5288 msg
.rpc_argp
= &data
->args
;
5289 rpc_call_async(server
->client
, &msg
, 0, &nfs4_release_lockowner_ops
, data
);
5293 #define XATTR_NAME_NFSV4_ACL "system.nfs4_acl"
5295 static int nfs4_xattr_set_nfs4_acl(struct dentry
*dentry
, const char *key
,
5296 const void *buf
, size_t buflen
,
5297 int flags
, int type
)
5299 if (strcmp(key
, "") != 0)
5302 return nfs4_proc_set_acl(dentry
->d_inode
, buf
, buflen
);
5305 static int nfs4_xattr_get_nfs4_acl(struct dentry
*dentry
, const char *key
,
5306 void *buf
, size_t buflen
, int type
)
5308 if (strcmp(key
, "") != 0)
5311 return nfs4_proc_get_acl(dentry
->d_inode
, buf
, buflen
);
5314 static size_t nfs4_xattr_list_nfs4_acl(struct dentry
*dentry
, char *list
,
5315 size_t list_len
, const char *name
,
5316 size_t name_len
, int type
)
5318 size_t len
= sizeof(XATTR_NAME_NFSV4_ACL
);
5320 if (!nfs4_server_supports_acls(NFS_SERVER(dentry
->d_inode
)))
5323 if (list
&& len
<= list_len
)
5324 memcpy(list
, XATTR_NAME_NFSV4_ACL
, len
);
5329 * nfs_fhget will use either the mounted_on_fileid or the fileid
5331 static void nfs_fixup_referral_attributes(struct nfs_fattr
*fattr
)
5333 if (!(((fattr
->valid
& NFS_ATTR_FATTR_MOUNTED_ON_FILEID
) ||
5334 (fattr
->valid
& NFS_ATTR_FATTR_FILEID
)) &&
5335 (fattr
->valid
& NFS_ATTR_FATTR_FSID
) &&
5336 (fattr
->valid
& NFS_ATTR_FATTR_V4_LOCATIONS
)))
5339 fattr
->valid
|= NFS_ATTR_FATTR_TYPE
| NFS_ATTR_FATTR_MODE
|
5340 NFS_ATTR_FATTR_NLINK
| NFS_ATTR_FATTR_V4_REFERRAL
;
5341 fattr
->mode
= S_IFDIR
| S_IRUGO
| S_IXUGO
;
5345 static int _nfs4_proc_fs_locations(struct rpc_clnt
*client
, struct inode
*dir
,
5346 const struct qstr
*name
,
5347 struct nfs4_fs_locations
*fs_locations
,
5350 struct nfs_server
*server
= NFS_SERVER(dir
);
5352 [0] = FATTR4_WORD0_FSID
| FATTR4_WORD0_FS_LOCATIONS
,
5354 struct nfs4_fs_locations_arg args
= {
5355 .dir_fh
= NFS_FH(dir
),
5360 struct nfs4_fs_locations_res res
= {
5361 .fs_locations
= fs_locations
,
5363 struct rpc_message msg
= {
5364 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FS_LOCATIONS
],
5370 dprintk("%s: start\n", __func__
);
5372 /* Ask for the fileid of the absent filesystem if mounted_on_fileid
5373 * is not supported */
5374 if (NFS_SERVER(dir
)->attr_bitmask
[1] & FATTR4_WORD1_MOUNTED_ON_FILEID
)
5375 bitmask
[1] |= FATTR4_WORD1_MOUNTED_ON_FILEID
;
5377 bitmask
[0] |= FATTR4_WORD0_FILEID
;
5379 nfs_fattr_init(&fs_locations
->fattr
);
5380 fs_locations
->server
= server
;
5381 fs_locations
->nlocations
= 0;
5382 status
= nfs4_call_sync(client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
5383 dprintk("%s: returned status = %d\n", __func__
, status
);
5387 int nfs4_proc_fs_locations(struct rpc_clnt
*client
, struct inode
*dir
,
5388 const struct qstr
*name
,
5389 struct nfs4_fs_locations
*fs_locations
,
5392 struct nfs4_exception exception
= { };
5395 err
= nfs4_handle_exception(NFS_SERVER(dir
),
5396 _nfs4_proc_fs_locations(client
, dir
, name
, fs_locations
, page
),
5398 } while (exception
.retry
);
5402 static int _nfs4_proc_secinfo(struct inode
*dir
, const struct qstr
*name
, struct nfs4_secinfo_flavors
*flavors
)
5405 struct nfs4_secinfo_arg args
= {
5406 .dir_fh
= NFS_FH(dir
),
5409 struct nfs4_secinfo_res res
= {
5412 struct rpc_message msg
= {
5413 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SECINFO
],
5418 dprintk("NFS call secinfo %s\n", name
->name
);
5419 status
= nfs4_call_sync(NFS_SERVER(dir
)->client
, NFS_SERVER(dir
), &msg
, &args
.seq_args
, &res
.seq_res
, 0);
5420 dprintk("NFS reply secinfo: %d\n", status
);
5424 int nfs4_proc_secinfo(struct inode
*dir
, const struct qstr
*name
,
5425 struct nfs4_secinfo_flavors
*flavors
)
5427 struct nfs4_exception exception
= { };
5430 err
= nfs4_handle_exception(NFS_SERVER(dir
),
5431 _nfs4_proc_secinfo(dir
, name
, flavors
),
5433 } while (exception
.retry
);
5437 #ifdef CONFIG_NFS_V4_1
5439 * Check the exchange flags returned by the server for invalid flags, having
5440 * both PNFS and NON_PNFS flags set, and not having one of NON_PNFS, PNFS, or
5443 static int nfs4_check_cl_exchange_flags(u32 flags
)
5445 if (flags
& ~EXCHGID4_FLAG_MASK_R
)
5447 if ((flags
& EXCHGID4_FLAG_USE_PNFS_MDS
) &&
5448 (flags
& EXCHGID4_FLAG_USE_NON_PNFS
))
5450 if (!(flags
& (EXCHGID4_FLAG_MASK_PNFS
)))
5454 return -NFS4ERR_INVAL
;
5458 nfs41_same_server_scope(struct nfs41_server_scope
*a
,
5459 struct nfs41_server_scope
*b
)
5461 if (a
->server_scope_sz
== b
->server_scope_sz
&&
5462 memcmp(a
->server_scope
, b
->server_scope
, a
->server_scope_sz
) == 0)
5469 * nfs4_proc_bind_conn_to_session()
5471 * The 4.1 client currently uses the same TCP connection for the
5472 * fore and backchannel.
5474 int nfs4_proc_bind_conn_to_session(struct nfs_client
*clp
, struct rpc_cred
*cred
)
5477 struct nfs41_bind_conn_to_session_res res
;
5478 struct rpc_message msg
= {
5480 &nfs4_procedures
[NFSPROC4_CLNT_BIND_CONN_TO_SESSION
],
5486 dprintk("--> %s\n", __func__
);
5488 res
.session
= kzalloc(sizeof(struct nfs4_session
), GFP_NOFS
);
5489 if (unlikely(res
.session
== NULL
)) {
5494 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
5496 if (memcmp(res
.session
->sess_id
.data
,
5497 clp
->cl_session
->sess_id
.data
, NFS4_MAX_SESSIONID_LEN
)) {
5498 dprintk("NFS: %s: Session ID mismatch\n", __func__
);
5502 if (res
.dir
!= NFS4_CDFS4_BOTH
) {
5503 dprintk("NFS: %s: Unexpected direction from server\n",
5508 if (res
.use_conn_in_rdma_mode
) {
5509 dprintk("NFS: %s: Server returned RDMA mode = true\n",
5518 dprintk("<-- %s status= %d\n", __func__
, status
);
5523 * nfs4_proc_exchange_id()
5525 * Returns zero, a negative errno, or a negative NFS4ERR status code.
5527 * Since the clientid has expired, all compounds using sessions
5528 * associated with the stale clientid will be returning
5529 * NFS4ERR_BADSESSION in the sequence operation, and will therefore
5530 * be in some phase of session reset.
5532 int nfs4_proc_exchange_id(struct nfs_client
*clp
, struct rpc_cred
*cred
)
5534 nfs4_verifier verifier
;
5535 struct nfs41_exchange_id_args args
= {
5536 .verifier
= &verifier
,
5538 .flags
= EXCHGID4_FLAG_SUPP_MOVED_REFER
,
5540 struct nfs41_exchange_id_res res
= {
5544 struct rpc_message msg
= {
5545 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_EXCHANGE_ID
],
5551 nfs4_init_boot_verifier(clp
, &verifier
);
5552 args
.id_len
= nfs4_init_uniform_client_string(clp
, args
.id
,
5554 dprintk("NFS call exchange_id auth=%s, '%.*s'\n",
5555 clp
->cl_rpcclient
->cl_auth
->au_ops
->au_name
,
5556 args
.id_len
, args
.id
);
5558 res
.server_owner
= kzalloc(sizeof(struct nfs41_server_owner
),
5560 if (unlikely(res
.server_owner
== NULL
)) {
5565 res
.server_scope
= kzalloc(sizeof(struct nfs41_server_scope
),
5567 if (unlikely(res
.server_scope
== NULL
)) {
5569 goto out_server_owner
;
5572 res
.impl_id
= kzalloc(sizeof(struct nfs41_impl_id
), GFP_NOFS
);
5573 if (unlikely(res
.impl_id
== NULL
)) {
5575 goto out_server_scope
;
5578 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
5580 status
= nfs4_check_cl_exchange_flags(res
.flags
);
5583 clp
->cl_clientid
= res
.clientid
;
5584 clp
->cl_exchange_flags
= (res
.flags
& ~EXCHGID4_FLAG_CONFIRMED_R
);
5585 if (!(res
.flags
& EXCHGID4_FLAG_CONFIRMED_R
))
5586 clp
->cl_seqid
= res
.seqid
;
5588 kfree(clp
->cl_serverowner
);
5589 clp
->cl_serverowner
= res
.server_owner
;
5590 res
.server_owner
= NULL
;
5592 /* use the most recent implementation id */
5593 kfree(clp
->cl_implid
);
5594 clp
->cl_implid
= res
.impl_id
;
5596 if (clp
->cl_serverscope
!= NULL
&&
5597 !nfs41_same_server_scope(clp
->cl_serverscope
,
5598 res
.server_scope
)) {
5599 dprintk("%s: server_scope mismatch detected\n",
5601 set_bit(NFS4CLNT_SERVER_SCOPE_MISMATCH
, &clp
->cl_state
);
5602 kfree(clp
->cl_serverscope
);
5603 clp
->cl_serverscope
= NULL
;
5606 if (clp
->cl_serverscope
== NULL
) {
5607 clp
->cl_serverscope
= res
.server_scope
;
5614 kfree(res
.server_owner
);
5616 kfree(res
.server_scope
);
5618 if (clp
->cl_implid
!= NULL
)
5619 dprintk("NFS reply exchange_id: Server Implementation ID: "
5620 "domain: %s, name: %s, date: %llu,%u\n",
5621 clp
->cl_implid
->domain
, clp
->cl_implid
->name
,
5622 clp
->cl_implid
->date
.seconds
,
5623 clp
->cl_implid
->date
.nseconds
);
5624 dprintk("NFS reply exchange_id: %d\n", status
);
5628 static int _nfs4_proc_destroy_clientid(struct nfs_client
*clp
,
5629 struct rpc_cred
*cred
)
5631 struct rpc_message msg
= {
5632 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DESTROY_CLIENTID
],
5638 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
5640 dprintk("NFS: Got error %d from the server %s on "
5641 "DESTROY_CLIENTID.", status
, clp
->cl_hostname
);
5645 static int nfs4_proc_destroy_clientid(struct nfs_client
*clp
,
5646 struct rpc_cred
*cred
)
5651 for (loop
= NFS4_MAX_LOOP_ON_RECOVER
; loop
!= 0; loop
--) {
5652 ret
= _nfs4_proc_destroy_clientid(clp
, cred
);
5654 case -NFS4ERR_DELAY
:
5655 case -NFS4ERR_CLIENTID_BUSY
:
5665 int nfs4_destroy_clientid(struct nfs_client
*clp
)
5667 struct rpc_cred
*cred
;
5670 if (clp
->cl_mvops
->minor_version
< 1)
5672 if (clp
->cl_exchange_flags
== 0)
5674 if (clp
->cl_preserve_clid
)
5676 cred
= nfs4_get_exchange_id_cred(clp
);
5677 ret
= nfs4_proc_destroy_clientid(clp
, cred
);
5682 case -NFS4ERR_STALE_CLIENTID
:
5683 clp
->cl_exchange_flags
= 0;
5689 struct nfs4_get_lease_time_data
{
5690 struct nfs4_get_lease_time_args
*args
;
5691 struct nfs4_get_lease_time_res
*res
;
5692 struct nfs_client
*clp
;
5695 static void nfs4_get_lease_time_prepare(struct rpc_task
*task
,
5698 struct nfs4_get_lease_time_data
*data
=
5699 (struct nfs4_get_lease_time_data
*)calldata
;
5701 dprintk("--> %s\n", __func__
);
5702 /* just setup sequence, do not trigger session recovery
5703 since we're invoked within one */
5704 nfs41_setup_sequence(data
->clp
->cl_session
,
5705 &data
->args
->la_seq_args
,
5706 &data
->res
->lr_seq_res
,
5708 dprintk("<-- %s\n", __func__
);
5712 * Called from nfs4_state_manager thread for session setup, so don't recover
5713 * from sequence operation or clientid errors.
5715 static void nfs4_get_lease_time_done(struct rpc_task
*task
, void *calldata
)
5717 struct nfs4_get_lease_time_data
*data
=
5718 (struct nfs4_get_lease_time_data
*)calldata
;
5720 dprintk("--> %s\n", __func__
);
5721 if (!nfs41_sequence_done(task
, &data
->res
->lr_seq_res
))
5723 switch (task
->tk_status
) {
5724 case -NFS4ERR_DELAY
:
5725 case -NFS4ERR_GRACE
:
5726 dprintk("%s Retry: tk_status %d\n", __func__
, task
->tk_status
);
5727 rpc_delay(task
, NFS4_POLL_RETRY_MIN
);
5728 task
->tk_status
= 0;
5730 case -NFS4ERR_RETRY_UNCACHED_REP
:
5731 rpc_restart_call_prepare(task
);
5734 dprintk("<-- %s\n", __func__
);
5737 static const struct rpc_call_ops nfs4_get_lease_time_ops
= {
5738 .rpc_call_prepare
= nfs4_get_lease_time_prepare
,
5739 .rpc_call_done
= nfs4_get_lease_time_done
,
5742 int nfs4_proc_get_lease_time(struct nfs_client
*clp
, struct nfs_fsinfo
*fsinfo
)
5744 struct rpc_task
*task
;
5745 struct nfs4_get_lease_time_args args
;
5746 struct nfs4_get_lease_time_res res
= {
5747 .lr_fsinfo
= fsinfo
,
5749 struct nfs4_get_lease_time_data data
= {
5754 struct rpc_message msg
= {
5755 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GET_LEASE_TIME
],
5759 struct rpc_task_setup task_setup
= {
5760 .rpc_client
= clp
->cl_rpcclient
,
5761 .rpc_message
= &msg
,
5762 .callback_ops
= &nfs4_get_lease_time_ops
,
5763 .callback_data
= &data
,
5764 .flags
= RPC_TASK_TIMEOUT
,
5768 nfs41_init_sequence(&args
.la_seq_args
, &res
.lr_seq_res
, 0);
5769 nfs4_set_sequence_privileged(&args
.la_seq_args
);
5770 dprintk("--> %s\n", __func__
);
5771 task
= rpc_run_task(&task_setup
);
5774 status
= PTR_ERR(task
);
5776 status
= task
->tk_status
;
5779 dprintk("<-- %s return %d\n", __func__
, status
);
5785 * Initialize the values to be used by the client in CREATE_SESSION
5786 * If nfs4_init_session set the fore channel request and response sizes,
5789 * Set the back channel max_resp_sz_cached to zero to force the client to
5790 * always set csa_cachethis to FALSE because the current implementation
5791 * of the back channel DRC only supports caching the CB_SEQUENCE operation.
5793 static void nfs4_init_channel_attrs(struct nfs41_create_session_args
*args
)
5795 struct nfs4_session
*session
= args
->client
->cl_session
;
5796 unsigned int mxrqst_sz
= session
->fc_target_max_rqst_sz
,
5797 mxresp_sz
= session
->fc_target_max_resp_sz
;
5800 mxrqst_sz
= NFS_MAX_FILE_IO_SIZE
;
5802 mxresp_sz
= NFS_MAX_FILE_IO_SIZE
;
5803 /* Fore channel attributes */
5804 args
->fc_attrs
.max_rqst_sz
= mxrqst_sz
;
5805 args
->fc_attrs
.max_resp_sz
= mxresp_sz
;
5806 args
->fc_attrs
.max_ops
= NFS4_MAX_OPS
;
5807 args
->fc_attrs
.max_reqs
= max_session_slots
;
5809 dprintk("%s: Fore Channel : max_rqst_sz=%u max_resp_sz=%u "
5810 "max_ops=%u max_reqs=%u\n",
5812 args
->fc_attrs
.max_rqst_sz
, args
->fc_attrs
.max_resp_sz
,
5813 args
->fc_attrs
.max_ops
, args
->fc_attrs
.max_reqs
);
5815 /* Back channel attributes */
5816 args
->bc_attrs
.max_rqst_sz
= PAGE_SIZE
;
5817 args
->bc_attrs
.max_resp_sz
= PAGE_SIZE
;
5818 args
->bc_attrs
.max_resp_sz_cached
= 0;
5819 args
->bc_attrs
.max_ops
= NFS4_MAX_BACK_CHANNEL_OPS
;
5820 args
->bc_attrs
.max_reqs
= 1;
5822 dprintk("%s: Back Channel : max_rqst_sz=%u max_resp_sz=%u "
5823 "max_resp_sz_cached=%u max_ops=%u max_reqs=%u\n",
5825 args
->bc_attrs
.max_rqst_sz
, args
->bc_attrs
.max_resp_sz
,
5826 args
->bc_attrs
.max_resp_sz_cached
, args
->bc_attrs
.max_ops
,
5827 args
->bc_attrs
.max_reqs
);
5830 static int nfs4_verify_fore_channel_attrs(struct nfs41_create_session_args
*args
, struct nfs4_session
*session
)
5832 struct nfs4_channel_attrs
*sent
= &args
->fc_attrs
;
5833 struct nfs4_channel_attrs
*rcvd
= &session
->fc_attrs
;
5835 if (rcvd
->max_resp_sz
> sent
->max_resp_sz
)
5838 * Our requested max_ops is the minimum we need; we're not
5839 * prepared to break up compounds into smaller pieces than that.
5840 * So, no point even trying to continue if the server won't
5843 if (rcvd
->max_ops
< sent
->max_ops
)
5845 if (rcvd
->max_reqs
== 0)
5847 if (rcvd
->max_reqs
> NFS4_MAX_SLOT_TABLE
)
5848 rcvd
->max_reqs
= NFS4_MAX_SLOT_TABLE
;
5852 static int nfs4_verify_back_channel_attrs(struct nfs41_create_session_args
*args
, struct nfs4_session
*session
)
5854 struct nfs4_channel_attrs
*sent
= &args
->bc_attrs
;
5855 struct nfs4_channel_attrs
*rcvd
= &session
->bc_attrs
;
5857 if (rcvd
->max_rqst_sz
> sent
->max_rqst_sz
)
5859 if (rcvd
->max_resp_sz
< sent
->max_resp_sz
)
5861 if (rcvd
->max_resp_sz_cached
> sent
->max_resp_sz_cached
)
5863 /* These would render the backchannel useless: */
5864 if (rcvd
->max_ops
!= sent
->max_ops
)
5866 if (rcvd
->max_reqs
!= sent
->max_reqs
)
5871 static int nfs4_verify_channel_attrs(struct nfs41_create_session_args
*args
,
5872 struct nfs4_session
*session
)
5876 ret
= nfs4_verify_fore_channel_attrs(args
, session
);
5879 return nfs4_verify_back_channel_attrs(args
, session
);
5882 static int _nfs4_proc_create_session(struct nfs_client
*clp
,
5883 struct rpc_cred
*cred
)
5885 struct nfs4_session
*session
= clp
->cl_session
;
5886 struct nfs41_create_session_args args
= {
5888 .cb_program
= NFS4_CALLBACK
,
5890 struct nfs41_create_session_res res
= {
5893 struct rpc_message msg
= {
5894 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CREATE_SESSION
],
5901 nfs4_init_channel_attrs(&args
);
5902 args
.flags
= (SESSION4_PERSIST
| SESSION4_BACK_CHAN
);
5904 status
= rpc_call_sync(session
->clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
5907 /* Verify the session's negotiated channel_attrs values */
5908 status
= nfs4_verify_channel_attrs(&args
, session
);
5909 /* Increment the clientid slot sequence id */
5917 * Issues a CREATE_SESSION operation to the server.
5918 * It is the responsibility of the caller to verify the session is
5919 * expired before calling this routine.
5921 int nfs4_proc_create_session(struct nfs_client
*clp
, struct rpc_cred
*cred
)
5925 struct nfs4_session
*session
= clp
->cl_session
;
5927 dprintk("--> %s clp=%p session=%p\n", __func__
, clp
, session
);
5929 status
= _nfs4_proc_create_session(clp
, cred
);
5933 /* Init or reset the session slot tables */
5934 status
= nfs4_setup_session_slot_tables(session
);
5935 dprintk("slot table setup returned %d\n", status
);
5939 ptr
= (unsigned *)&session
->sess_id
.data
[0];
5940 dprintk("%s client>seqid %d sessionid %u:%u:%u:%u\n", __func__
,
5941 clp
->cl_seqid
, ptr
[0], ptr
[1], ptr
[2], ptr
[3]);
5943 dprintk("<-- %s\n", __func__
);
5948 * Issue the over-the-wire RPC DESTROY_SESSION.
5949 * The caller must serialize access to this routine.
5951 int nfs4_proc_destroy_session(struct nfs4_session
*session
,
5952 struct rpc_cred
*cred
)
5954 struct rpc_message msg
= {
5955 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DESTROY_SESSION
],
5956 .rpc_argp
= session
,
5961 dprintk("--> nfs4_proc_destroy_session\n");
5963 /* session is still being setup */
5964 if (session
->clp
->cl_cons_state
!= NFS_CS_READY
)
5967 status
= rpc_call_sync(session
->clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
5970 dprintk("NFS: Got error %d from the server on DESTROY_SESSION. "
5971 "Session has been destroyed regardless...\n", status
);
5973 dprintk("<-- nfs4_proc_destroy_session\n");
5978 * Renew the cl_session lease.
5980 struct nfs4_sequence_data
{
5981 struct nfs_client
*clp
;
5982 struct nfs4_sequence_args args
;
5983 struct nfs4_sequence_res res
;
5986 static void nfs41_sequence_release(void *data
)
5988 struct nfs4_sequence_data
*calldata
= data
;
5989 struct nfs_client
*clp
= calldata
->clp
;
5991 if (atomic_read(&clp
->cl_count
) > 1)
5992 nfs4_schedule_state_renewal(clp
);
5993 nfs_put_client(clp
);
5997 static int nfs41_sequence_handle_errors(struct rpc_task
*task
, struct nfs_client
*clp
)
5999 switch(task
->tk_status
) {
6000 case -NFS4ERR_DELAY
:
6001 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
6004 nfs4_schedule_lease_recovery(clp
);
6009 static void nfs41_sequence_call_done(struct rpc_task
*task
, void *data
)
6011 struct nfs4_sequence_data
*calldata
= data
;
6012 struct nfs_client
*clp
= calldata
->clp
;
6014 if (!nfs41_sequence_done(task
, task
->tk_msg
.rpc_resp
))
6017 if (task
->tk_status
< 0) {
6018 dprintk("%s ERROR %d\n", __func__
, task
->tk_status
);
6019 if (atomic_read(&clp
->cl_count
) == 1)
6022 if (nfs41_sequence_handle_errors(task
, clp
) == -EAGAIN
) {
6023 rpc_restart_call_prepare(task
);
6027 dprintk("%s rpc_cred %p\n", __func__
, task
->tk_msg
.rpc_cred
);
6029 dprintk("<-- %s\n", __func__
);
6032 static void nfs41_sequence_prepare(struct rpc_task
*task
, void *data
)
6034 struct nfs4_sequence_data
*calldata
= data
;
6035 struct nfs_client
*clp
= calldata
->clp
;
6036 struct nfs4_sequence_args
*args
;
6037 struct nfs4_sequence_res
*res
;
6039 args
= task
->tk_msg
.rpc_argp
;
6040 res
= task
->tk_msg
.rpc_resp
;
6042 nfs41_setup_sequence(clp
->cl_session
, args
, res
, task
);
6045 static const struct rpc_call_ops nfs41_sequence_ops
= {
6046 .rpc_call_done
= nfs41_sequence_call_done
,
6047 .rpc_call_prepare
= nfs41_sequence_prepare
,
6048 .rpc_release
= nfs41_sequence_release
,
6051 static struct rpc_task
*_nfs41_proc_sequence(struct nfs_client
*clp
,
6052 struct rpc_cred
*cred
,
6055 struct nfs4_sequence_data
*calldata
;
6056 struct rpc_message msg
= {
6057 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SEQUENCE
],
6060 struct rpc_task_setup task_setup_data
= {
6061 .rpc_client
= clp
->cl_rpcclient
,
6062 .rpc_message
= &msg
,
6063 .callback_ops
= &nfs41_sequence_ops
,
6064 .flags
= RPC_TASK_ASYNC
| RPC_TASK_TIMEOUT
,
6067 if (!atomic_inc_not_zero(&clp
->cl_count
))
6068 return ERR_PTR(-EIO
);
6069 calldata
= kzalloc(sizeof(*calldata
), GFP_NOFS
);
6070 if (calldata
== NULL
) {
6071 nfs_put_client(clp
);
6072 return ERR_PTR(-ENOMEM
);
6074 nfs41_init_sequence(&calldata
->args
, &calldata
->res
, 0);
6076 nfs4_set_sequence_privileged(&calldata
->args
);
6077 msg
.rpc_argp
= &calldata
->args
;
6078 msg
.rpc_resp
= &calldata
->res
;
6079 calldata
->clp
= clp
;
6080 task_setup_data
.callback_data
= calldata
;
6082 return rpc_run_task(&task_setup_data
);
6085 static int nfs41_proc_async_sequence(struct nfs_client
*clp
, struct rpc_cred
*cred
, unsigned renew_flags
)
6087 struct rpc_task
*task
;
6090 if ((renew_flags
& NFS4_RENEW_TIMEOUT
) == 0)
6092 task
= _nfs41_proc_sequence(clp
, cred
, false);
6094 ret
= PTR_ERR(task
);
6096 rpc_put_task_async(task
);
6097 dprintk("<-- %s status=%d\n", __func__
, ret
);
6101 static int nfs4_proc_sequence(struct nfs_client
*clp
, struct rpc_cred
*cred
)
6103 struct rpc_task
*task
;
6106 task
= _nfs41_proc_sequence(clp
, cred
, true);
6108 ret
= PTR_ERR(task
);
6111 ret
= rpc_wait_for_completion_task(task
);
6113 struct nfs4_sequence_res
*res
= task
->tk_msg
.rpc_resp
;
6115 if (task
->tk_status
== 0)
6116 nfs41_handle_sequence_flag_errors(clp
, res
->sr_status_flags
);
6117 ret
= task
->tk_status
;
6121 dprintk("<-- %s status=%d\n", __func__
, ret
);
6125 struct nfs4_reclaim_complete_data
{
6126 struct nfs_client
*clp
;
6127 struct nfs41_reclaim_complete_args arg
;
6128 struct nfs41_reclaim_complete_res res
;
6131 static void nfs4_reclaim_complete_prepare(struct rpc_task
*task
, void *data
)
6133 struct nfs4_reclaim_complete_data
*calldata
= data
;
6135 nfs41_setup_sequence(calldata
->clp
->cl_session
,
6136 &calldata
->arg
.seq_args
,
6137 &calldata
->res
.seq_res
,
6141 static int nfs41_reclaim_complete_handle_errors(struct rpc_task
*task
, struct nfs_client
*clp
)
6143 switch(task
->tk_status
) {
6145 case -NFS4ERR_COMPLETE_ALREADY
:
6146 case -NFS4ERR_WRONG_CRED
: /* What to do here? */
6148 case -NFS4ERR_DELAY
:
6149 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
6151 case -NFS4ERR_RETRY_UNCACHED_REP
:
6154 nfs4_schedule_lease_recovery(clp
);
6159 static void nfs4_reclaim_complete_done(struct rpc_task
*task
, void *data
)
6161 struct nfs4_reclaim_complete_data
*calldata
= data
;
6162 struct nfs_client
*clp
= calldata
->clp
;
6163 struct nfs4_sequence_res
*res
= &calldata
->res
.seq_res
;
6165 dprintk("--> %s\n", __func__
);
6166 if (!nfs41_sequence_done(task
, res
))
6169 if (nfs41_reclaim_complete_handle_errors(task
, clp
) == -EAGAIN
) {
6170 rpc_restart_call_prepare(task
);
6173 dprintk("<-- %s\n", __func__
);
6176 static void nfs4_free_reclaim_complete_data(void *data
)
6178 struct nfs4_reclaim_complete_data
*calldata
= data
;
6183 static const struct rpc_call_ops nfs4_reclaim_complete_call_ops
= {
6184 .rpc_call_prepare
= nfs4_reclaim_complete_prepare
,
6185 .rpc_call_done
= nfs4_reclaim_complete_done
,
6186 .rpc_release
= nfs4_free_reclaim_complete_data
,
6190 * Issue a global reclaim complete.
6192 static int nfs41_proc_reclaim_complete(struct nfs_client
*clp
)
6194 struct nfs4_reclaim_complete_data
*calldata
;
6195 struct rpc_task
*task
;
6196 struct rpc_message msg
= {
6197 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RECLAIM_COMPLETE
],
6199 struct rpc_task_setup task_setup_data
= {
6200 .rpc_client
= clp
->cl_rpcclient
,
6201 .rpc_message
= &msg
,
6202 .callback_ops
= &nfs4_reclaim_complete_call_ops
,
6203 .flags
= RPC_TASK_ASYNC
,
6205 int status
= -ENOMEM
;
6207 dprintk("--> %s\n", __func__
);
6208 calldata
= kzalloc(sizeof(*calldata
), GFP_NOFS
);
6209 if (calldata
== NULL
)
6211 calldata
->clp
= clp
;
6212 calldata
->arg
.one_fs
= 0;
6214 nfs41_init_sequence(&calldata
->arg
.seq_args
, &calldata
->res
.seq_res
, 0);
6215 nfs4_set_sequence_privileged(&calldata
->arg
.seq_args
);
6216 msg
.rpc_argp
= &calldata
->arg
;
6217 msg
.rpc_resp
= &calldata
->res
;
6218 task_setup_data
.callback_data
= calldata
;
6219 task
= rpc_run_task(&task_setup_data
);
6221 status
= PTR_ERR(task
);
6224 status
= nfs4_wait_for_completion_rpc_task(task
);
6226 status
= task
->tk_status
;
6230 dprintk("<-- %s status=%d\n", __func__
, status
);
6235 nfs4_layoutget_prepare(struct rpc_task
*task
, void *calldata
)
6237 struct nfs4_layoutget
*lgp
= calldata
;
6238 struct nfs_server
*server
= NFS_SERVER(lgp
->args
.inode
);
6239 struct nfs4_session
*session
= nfs4_get_session(server
);
6241 dprintk("--> %s\n", __func__
);
6242 /* Note the is a race here, where a CB_LAYOUTRECALL can come in
6243 * right now covering the LAYOUTGET we are about to send.
6244 * However, that is not so catastrophic, and there seems
6245 * to be no way to prevent it completely.
6247 if (nfs41_setup_sequence(session
, &lgp
->args
.seq_args
,
6248 &lgp
->res
.seq_res
, task
))
6250 if (pnfs_choose_layoutget_stateid(&lgp
->args
.stateid
,
6251 NFS_I(lgp
->args
.inode
)->layout
,
6252 lgp
->args
.ctx
->state
)) {
6253 rpc_exit(task
, NFS4_OK
);
6257 static void nfs4_layoutget_done(struct rpc_task
*task
, void *calldata
)
6259 struct nfs4_layoutget
*lgp
= calldata
;
6260 struct inode
*inode
= lgp
->args
.inode
;
6261 struct nfs_server
*server
= NFS_SERVER(inode
);
6262 struct pnfs_layout_hdr
*lo
;
6263 struct nfs4_state
*state
= NULL
;
6264 unsigned long timeo
, now
, giveup
;
6266 dprintk("--> %s tk_status => %d\n", __func__
, -task
->tk_status
);
6268 if (!nfs41_sequence_done(task
, &lgp
->res
.seq_res
))
6271 switch (task
->tk_status
) {
6275 * NFS4ERR_LAYOUTTRYLATER is a conflict with another client
6276 * (or clients) writing to the same RAID stripe
6278 case -NFS4ERR_LAYOUTTRYLATER
:
6280 * NFS4ERR_RECALLCONFLICT is when conflict with self (must recall
6281 * existing layout before getting a new one).
6283 case -NFS4ERR_RECALLCONFLICT
:
6284 timeo
= rpc_get_timeout(task
->tk_client
);
6285 giveup
= lgp
->args
.timestamp
+ timeo
;
6287 if (time_after(giveup
, now
)) {
6288 unsigned long delay
;
6291 * - Not less then NFS4_POLL_RETRY_MIN.
6292 * - One last time a jiffie before we give up
6293 * - exponential backoff (time_now minus start_attempt)
6295 delay
= max_t(unsigned long, NFS4_POLL_RETRY_MIN
,
6296 min((giveup
- now
- 1),
6297 now
- lgp
->args
.timestamp
));
6299 dprintk("%s: NFS4ERR_RECALLCONFLICT waiting %lu\n",
6301 rpc_delay(task
, delay
);
6302 task
->tk_status
= 0;
6303 rpc_restart_call_prepare(task
);
6304 goto out
; /* Do not call nfs4_async_handle_error() */
6307 case -NFS4ERR_EXPIRED
:
6308 case -NFS4ERR_BAD_STATEID
:
6309 spin_lock(&inode
->i_lock
);
6310 lo
= NFS_I(inode
)->layout
;
6311 if (!lo
|| list_empty(&lo
->plh_segs
)) {
6312 spin_unlock(&inode
->i_lock
);
6313 /* If the open stateid was bad, then recover it. */
6314 state
= lgp
->args
.ctx
->state
;
6318 pnfs_mark_matching_lsegs_invalid(lo
, &head
, NULL
);
6319 spin_unlock(&inode
->i_lock
);
6320 /* Mark the bad layout state as invalid, then
6321 * retry using the open stateid. */
6322 pnfs_free_lseg_list(&head
);
6325 if (nfs4_async_handle_error(task
, server
, state
) == -EAGAIN
)
6326 rpc_restart_call_prepare(task
);
6328 dprintk("<-- %s\n", __func__
);
6331 static size_t max_response_pages(struct nfs_server
*server
)
6333 u32 max_resp_sz
= server
->nfs_client
->cl_session
->fc_attrs
.max_resp_sz
;
6334 return nfs_page_array_len(0, max_resp_sz
);
6337 static void nfs4_free_pages(struct page
**pages
, size_t size
)
6344 for (i
= 0; i
< size
; i
++) {
6347 __free_page(pages
[i
]);
6352 static struct page
**nfs4_alloc_pages(size_t size
, gfp_t gfp_flags
)
6354 struct page
**pages
;
6357 pages
= kcalloc(size
, sizeof(struct page
*), gfp_flags
);
6359 dprintk("%s: can't alloc array of %zu pages\n", __func__
, size
);
6363 for (i
= 0; i
< size
; i
++) {
6364 pages
[i
] = alloc_page(gfp_flags
);
6366 dprintk("%s: failed to allocate page\n", __func__
);
6367 nfs4_free_pages(pages
, size
);
6375 static void nfs4_layoutget_release(void *calldata
)
6377 struct nfs4_layoutget
*lgp
= calldata
;
6378 struct inode
*inode
= lgp
->args
.inode
;
6379 struct nfs_server
*server
= NFS_SERVER(inode
);
6380 size_t max_pages
= max_response_pages(server
);
6382 dprintk("--> %s\n", __func__
);
6383 nfs4_free_pages(lgp
->args
.layout
.pages
, max_pages
);
6384 pnfs_put_layout_hdr(NFS_I(inode
)->layout
);
6385 put_nfs_open_context(lgp
->args
.ctx
);
6387 dprintk("<-- %s\n", __func__
);
6390 static const struct rpc_call_ops nfs4_layoutget_call_ops
= {
6391 .rpc_call_prepare
= nfs4_layoutget_prepare
,
6392 .rpc_call_done
= nfs4_layoutget_done
,
6393 .rpc_release
= nfs4_layoutget_release
,
6396 struct pnfs_layout_segment
*
6397 nfs4_proc_layoutget(struct nfs4_layoutget
*lgp
, gfp_t gfp_flags
)
6399 struct inode
*inode
= lgp
->args
.inode
;
6400 struct nfs_server
*server
= NFS_SERVER(inode
);
6401 size_t max_pages
= max_response_pages(server
);
6402 struct rpc_task
*task
;
6403 struct rpc_message msg
= {
6404 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LAYOUTGET
],
6405 .rpc_argp
= &lgp
->args
,
6406 .rpc_resp
= &lgp
->res
,
6408 struct rpc_task_setup task_setup_data
= {
6409 .rpc_client
= server
->client
,
6410 .rpc_message
= &msg
,
6411 .callback_ops
= &nfs4_layoutget_call_ops
,
6412 .callback_data
= lgp
,
6413 .flags
= RPC_TASK_ASYNC
,
6415 struct pnfs_layout_segment
*lseg
= NULL
;
6418 dprintk("--> %s\n", __func__
);
6420 /* nfs4_layoutget_release calls pnfs_put_layout_hdr */
6421 pnfs_get_layout_hdr(NFS_I(inode
)->layout
);
6423 lgp
->args
.layout
.pages
= nfs4_alloc_pages(max_pages
, gfp_flags
);
6424 if (!lgp
->args
.layout
.pages
) {
6425 nfs4_layoutget_release(lgp
);
6426 return ERR_PTR(-ENOMEM
);
6428 lgp
->args
.layout
.pglen
= max_pages
* PAGE_SIZE
;
6429 lgp
->args
.timestamp
= jiffies
;
6431 lgp
->res
.layoutp
= &lgp
->args
.layout
;
6432 lgp
->res
.seq_res
.sr_slot
= NULL
;
6433 nfs41_init_sequence(&lgp
->args
.seq_args
, &lgp
->res
.seq_res
, 0);
6435 task
= rpc_run_task(&task_setup_data
);
6437 return ERR_CAST(task
);
6438 status
= nfs4_wait_for_completion_rpc_task(task
);
6440 status
= task
->tk_status
;
6441 /* if layoutp->len is 0, nfs4_layoutget_prepare called rpc_exit */
6442 if (status
== 0 && lgp
->res
.layoutp
->len
)
6443 lseg
= pnfs_layout_process(lgp
);
6445 dprintk("<-- %s status=%d\n", __func__
, status
);
6447 return ERR_PTR(status
);
6452 nfs4_layoutreturn_prepare(struct rpc_task
*task
, void *calldata
)
6454 struct nfs4_layoutreturn
*lrp
= calldata
;
6456 dprintk("--> %s\n", __func__
);
6457 nfs41_setup_sequence(lrp
->clp
->cl_session
,
6458 &lrp
->args
.seq_args
,
6463 static void nfs4_layoutreturn_done(struct rpc_task
*task
, void *calldata
)
6465 struct nfs4_layoutreturn
*lrp
= calldata
;
6466 struct nfs_server
*server
;
6468 dprintk("--> %s\n", __func__
);
6470 if (!nfs41_sequence_done(task
, &lrp
->res
.seq_res
))
6473 server
= NFS_SERVER(lrp
->args
.inode
);
6474 if (nfs4_async_handle_error(task
, server
, NULL
) == -EAGAIN
) {
6475 rpc_restart_call_prepare(task
);
6478 dprintk("<-- %s\n", __func__
);
6481 static void nfs4_layoutreturn_release(void *calldata
)
6483 struct nfs4_layoutreturn
*lrp
= calldata
;
6484 struct pnfs_layout_hdr
*lo
= lrp
->args
.layout
;
6486 dprintk("--> %s\n", __func__
);
6487 spin_lock(&lo
->plh_inode
->i_lock
);
6488 if (lrp
->res
.lrs_present
)
6489 pnfs_set_layout_stateid(lo
, &lrp
->res
.stateid
, true);
6490 lo
->plh_block_lgets
--;
6491 spin_unlock(&lo
->plh_inode
->i_lock
);
6492 pnfs_put_layout_hdr(lrp
->args
.layout
);
6494 dprintk("<-- %s\n", __func__
);
6497 static const struct rpc_call_ops nfs4_layoutreturn_call_ops
= {
6498 .rpc_call_prepare
= nfs4_layoutreturn_prepare
,
6499 .rpc_call_done
= nfs4_layoutreturn_done
,
6500 .rpc_release
= nfs4_layoutreturn_release
,
6503 int nfs4_proc_layoutreturn(struct nfs4_layoutreturn
*lrp
)
6505 struct rpc_task
*task
;
6506 struct rpc_message msg
= {
6507 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LAYOUTRETURN
],
6508 .rpc_argp
= &lrp
->args
,
6509 .rpc_resp
= &lrp
->res
,
6511 struct rpc_task_setup task_setup_data
= {
6512 .rpc_client
= lrp
->clp
->cl_rpcclient
,
6513 .rpc_message
= &msg
,
6514 .callback_ops
= &nfs4_layoutreturn_call_ops
,
6515 .callback_data
= lrp
,
6519 dprintk("--> %s\n", __func__
);
6520 nfs41_init_sequence(&lrp
->args
.seq_args
, &lrp
->res
.seq_res
, 1);
6521 task
= rpc_run_task(&task_setup_data
);
6523 return PTR_ERR(task
);
6524 status
= task
->tk_status
;
6525 dprintk("<-- %s status=%d\n", __func__
, status
);
6531 * Retrieve the list of Data Server devices from the MDS.
6533 static int _nfs4_getdevicelist(struct nfs_server
*server
,
6534 const struct nfs_fh
*fh
,
6535 struct pnfs_devicelist
*devlist
)
6537 struct nfs4_getdevicelist_args args
= {
6539 .layoutclass
= server
->pnfs_curr_ld
->id
,
6541 struct nfs4_getdevicelist_res res
= {
6544 struct rpc_message msg
= {
6545 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETDEVICELIST
],
6551 dprintk("--> %s\n", __func__
);
6552 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
,
6554 dprintk("<-- %s status=%d\n", __func__
, status
);
6558 int nfs4_proc_getdevicelist(struct nfs_server
*server
,
6559 const struct nfs_fh
*fh
,
6560 struct pnfs_devicelist
*devlist
)
6562 struct nfs4_exception exception
= { };
6566 err
= nfs4_handle_exception(server
,
6567 _nfs4_getdevicelist(server
, fh
, devlist
),
6569 } while (exception
.retry
);
6571 dprintk("%s: err=%d, num_devs=%u\n", __func__
,
6572 err
, devlist
->num_devs
);
6576 EXPORT_SYMBOL_GPL(nfs4_proc_getdevicelist
);
6579 _nfs4_proc_getdeviceinfo(struct nfs_server
*server
, struct pnfs_device
*pdev
)
6581 struct nfs4_getdeviceinfo_args args
= {
6584 struct nfs4_getdeviceinfo_res res
= {
6587 struct rpc_message msg
= {
6588 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETDEVICEINFO
],
6594 dprintk("--> %s\n", __func__
);
6595 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
6596 dprintk("<-- %s status=%d\n", __func__
, status
);
6601 int nfs4_proc_getdeviceinfo(struct nfs_server
*server
, struct pnfs_device
*pdev
)
6603 struct nfs4_exception exception
= { };
6607 err
= nfs4_handle_exception(server
,
6608 _nfs4_proc_getdeviceinfo(server
, pdev
),
6610 } while (exception
.retry
);
6613 EXPORT_SYMBOL_GPL(nfs4_proc_getdeviceinfo
);
6615 static void nfs4_layoutcommit_prepare(struct rpc_task
*task
, void *calldata
)
6617 struct nfs4_layoutcommit_data
*data
= calldata
;
6618 struct nfs_server
*server
= NFS_SERVER(data
->args
.inode
);
6619 struct nfs4_session
*session
= nfs4_get_session(server
);
6621 nfs41_setup_sequence(session
,
6622 &data
->args
.seq_args
,
6628 nfs4_layoutcommit_done(struct rpc_task
*task
, void *calldata
)
6630 struct nfs4_layoutcommit_data
*data
= calldata
;
6631 struct nfs_server
*server
= NFS_SERVER(data
->args
.inode
);
6633 if (!nfs41_sequence_done(task
, &data
->res
.seq_res
))
6636 switch (task
->tk_status
) { /* Just ignore these failures */
6637 case -NFS4ERR_DELEG_REVOKED
: /* layout was recalled */
6638 case -NFS4ERR_BADIOMODE
: /* no IOMODE_RW layout for range */
6639 case -NFS4ERR_BADLAYOUT
: /* no layout */
6640 case -NFS4ERR_GRACE
: /* loca_recalim always false */
6641 task
->tk_status
= 0;
6644 nfs_post_op_update_inode_force_wcc(data
->args
.inode
,
6648 if (nfs4_async_handle_error(task
, server
, NULL
) == -EAGAIN
) {
6649 rpc_restart_call_prepare(task
);
6655 static void nfs4_layoutcommit_release(void *calldata
)
6657 struct nfs4_layoutcommit_data
*data
= calldata
;
6659 pnfs_cleanup_layoutcommit(data
);
6660 put_rpccred(data
->cred
);
6664 static const struct rpc_call_ops nfs4_layoutcommit_ops
= {
6665 .rpc_call_prepare
= nfs4_layoutcommit_prepare
,
6666 .rpc_call_done
= nfs4_layoutcommit_done
,
6667 .rpc_release
= nfs4_layoutcommit_release
,
6671 nfs4_proc_layoutcommit(struct nfs4_layoutcommit_data
*data
, bool sync
)
6673 struct rpc_message msg
= {
6674 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LAYOUTCOMMIT
],
6675 .rpc_argp
= &data
->args
,
6676 .rpc_resp
= &data
->res
,
6677 .rpc_cred
= data
->cred
,
6679 struct rpc_task_setup task_setup_data
= {
6680 .task
= &data
->task
,
6681 .rpc_client
= NFS_CLIENT(data
->args
.inode
),
6682 .rpc_message
= &msg
,
6683 .callback_ops
= &nfs4_layoutcommit_ops
,
6684 .callback_data
= data
,
6685 .flags
= RPC_TASK_ASYNC
,
6687 struct rpc_task
*task
;
6690 dprintk("NFS: %4d initiating layoutcommit call. sync %d "
6691 "lbw: %llu inode %lu\n",
6692 data
->task
.tk_pid
, sync
,
6693 data
->args
.lastbytewritten
,
6694 data
->args
.inode
->i_ino
);
6696 nfs41_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
6697 task
= rpc_run_task(&task_setup_data
);
6699 return PTR_ERR(task
);
6702 status
= nfs4_wait_for_completion_rpc_task(task
);
6705 status
= task
->tk_status
;
6707 dprintk("%s: status %d\n", __func__
, status
);
6713 _nfs41_proc_secinfo_no_name(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
6714 struct nfs_fsinfo
*info
, struct nfs4_secinfo_flavors
*flavors
)
6716 struct nfs41_secinfo_no_name_args args
= {
6717 .style
= SECINFO_STYLE_CURRENT_FH
,
6719 struct nfs4_secinfo_res res
= {
6722 struct rpc_message msg
= {
6723 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SECINFO_NO_NAME
],
6727 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
6731 nfs41_proc_secinfo_no_name(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
6732 struct nfs_fsinfo
*info
, struct nfs4_secinfo_flavors
*flavors
)
6734 struct nfs4_exception exception
= { };
6737 err
= _nfs41_proc_secinfo_no_name(server
, fhandle
, info
, flavors
);
6740 case -NFS4ERR_WRONGSEC
:
6744 err
= nfs4_handle_exception(server
, err
, &exception
);
6746 } while (exception
.retry
);
6752 nfs41_find_root_sec(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
6753 struct nfs_fsinfo
*info
)
6757 rpc_authflavor_t flavor
;
6758 struct nfs4_secinfo_flavors
*flavors
;
6760 page
= alloc_page(GFP_KERNEL
);
6766 flavors
= page_address(page
);
6767 err
= nfs41_proc_secinfo_no_name(server
, fhandle
, info
, flavors
);
6770 * Fall back on "guess and check" method if
6771 * the server doesn't support SECINFO_NO_NAME
6773 if (err
== -NFS4ERR_WRONGSEC
|| err
== -ENOTSUPP
) {
6774 err
= nfs4_find_root_sec(server
, fhandle
, info
);
6780 flavor
= nfs_find_best_sec(flavors
);
6782 err
= nfs4_lookup_root_sec(server
, fhandle
, info
, flavor
);
6792 static int _nfs41_test_stateid(struct nfs_server
*server
, nfs4_stateid
*stateid
)
6795 struct nfs41_test_stateid_args args
= {
6798 struct nfs41_test_stateid_res res
;
6799 struct rpc_message msg
= {
6800 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_TEST_STATEID
],
6805 dprintk("NFS call test_stateid %p\n", stateid
);
6806 nfs41_init_sequence(&args
.seq_args
, &res
.seq_res
, 0);
6807 nfs4_set_sequence_privileged(&args
.seq_args
);
6808 status
= nfs4_call_sync_sequence(server
->client
, server
, &msg
,
6809 &args
.seq_args
, &res
.seq_res
);
6810 if (status
!= NFS_OK
) {
6811 dprintk("NFS reply test_stateid: failed, %d\n", status
);
6814 dprintk("NFS reply test_stateid: succeeded, %d\n", -res
.status
);
6819 * nfs41_test_stateid - perform a TEST_STATEID operation
6821 * @server: server / transport on which to perform the operation
6822 * @stateid: state ID to test
6824 * Returns NFS_OK if the server recognizes that "stateid" is valid.
6825 * Otherwise a negative NFS4ERR value is returned if the operation
6826 * failed or the state ID is not currently valid.
6828 static int nfs41_test_stateid(struct nfs_server
*server
, nfs4_stateid
*stateid
)
6830 struct nfs4_exception exception
= { };
6833 err
= _nfs41_test_stateid(server
, stateid
);
6834 if (err
!= -NFS4ERR_DELAY
)
6836 nfs4_handle_exception(server
, err
, &exception
);
6837 } while (exception
.retry
);
6841 struct nfs_free_stateid_data
{
6842 struct nfs_server
*server
;
6843 struct nfs41_free_stateid_args args
;
6844 struct nfs41_free_stateid_res res
;
6847 static void nfs41_free_stateid_prepare(struct rpc_task
*task
, void *calldata
)
6849 struct nfs_free_stateid_data
*data
= calldata
;
6850 nfs41_setup_sequence(nfs4_get_session(data
->server
),
6851 &data
->args
.seq_args
,
6856 static void nfs41_free_stateid_done(struct rpc_task
*task
, void *calldata
)
6858 struct nfs_free_stateid_data
*data
= calldata
;
6860 nfs41_sequence_done(task
, &data
->res
.seq_res
);
6862 switch (task
->tk_status
) {
6863 case -NFS4ERR_DELAY
:
6864 if (nfs4_async_handle_error(task
, data
->server
, NULL
) == -EAGAIN
)
6865 rpc_restart_call_prepare(task
);
6869 static void nfs41_free_stateid_release(void *calldata
)
6874 const struct rpc_call_ops nfs41_free_stateid_ops
= {
6875 .rpc_call_prepare
= nfs41_free_stateid_prepare
,
6876 .rpc_call_done
= nfs41_free_stateid_done
,
6877 .rpc_release
= nfs41_free_stateid_release
,
6880 static struct rpc_task
*_nfs41_free_stateid(struct nfs_server
*server
,
6881 nfs4_stateid
*stateid
,
6884 struct rpc_message msg
= {
6885 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FREE_STATEID
],
6887 struct rpc_task_setup task_setup
= {
6888 .rpc_client
= server
->client
,
6889 .rpc_message
= &msg
,
6890 .callback_ops
= &nfs41_free_stateid_ops
,
6891 .flags
= RPC_TASK_ASYNC
,
6893 struct nfs_free_stateid_data
*data
;
6895 dprintk("NFS call free_stateid %p\n", stateid
);
6896 data
= kmalloc(sizeof(*data
), GFP_NOFS
);
6898 return ERR_PTR(-ENOMEM
);
6899 data
->server
= server
;
6900 nfs4_stateid_copy(&data
->args
.stateid
, stateid
);
6902 task_setup
.callback_data
= data
;
6904 msg
.rpc_argp
= &data
->args
;
6905 msg
.rpc_resp
= &data
->res
;
6906 nfs41_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 0);
6908 nfs4_set_sequence_privileged(&data
->args
.seq_args
);
6910 return rpc_run_task(&task_setup
);
6914 * nfs41_free_stateid - perform a FREE_STATEID operation
6916 * @server: server / transport on which to perform the operation
6917 * @stateid: state ID to release
6919 * Returns NFS_OK if the server freed "stateid". Otherwise a
6920 * negative NFS4ERR value is returned.
6922 static int nfs41_free_stateid(struct nfs_server
*server
, nfs4_stateid
*stateid
)
6924 struct rpc_task
*task
;
6927 task
= _nfs41_free_stateid(server
, stateid
, true);
6929 return PTR_ERR(task
);
6930 ret
= rpc_wait_for_completion_task(task
);
6932 ret
= task
->tk_status
;
6937 static int nfs41_free_lock_state(struct nfs_server
*server
, struct nfs4_lock_state
*lsp
)
6939 struct rpc_task
*task
;
6941 task
= _nfs41_free_stateid(server
, &lsp
->ls_stateid
, false);
6942 nfs4_free_lock_state(server
, lsp
);
6944 return PTR_ERR(task
);
6949 static bool nfs41_match_stateid(const nfs4_stateid
*s1
,
6950 const nfs4_stateid
*s2
)
6952 if (memcmp(s1
->other
, s2
->other
, sizeof(s1
->other
)) != 0)
6955 if (s1
->seqid
== s2
->seqid
)
6957 if (s1
->seqid
== 0 || s2
->seqid
== 0)
6963 #endif /* CONFIG_NFS_V4_1 */
6965 static bool nfs4_match_stateid(const nfs4_stateid
*s1
,
6966 const nfs4_stateid
*s2
)
6968 return nfs4_stateid_match(s1
, s2
);
6972 static const struct nfs4_state_recovery_ops nfs40_reboot_recovery_ops
= {
6973 .owner_flag_bit
= NFS_OWNER_RECLAIM_REBOOT
,
6974 .state_flag_bit
= NFS_STATE_RECLAIM_REBOOT
,
6975 .recover_open
= nfs4_open_reclaim
,
6976 .recover_lock
= nfs4_lock_reclaim
,
6977 .establish_clid
= nfs4_init_clientid
,
6978 .get_clid_cred
= nfs4_get_setclientid_cred
,
6979 .detect_trunking
= nfs40_discover_server_trunking
,
6982 #if defined(CONFIG_NFS_V4_1)
6983 static const struct nfs4_state_recovery_ops nfs41_reboot_recovery_ops
= {
6984 .owner_flag_bit
= NFS_OWNER_RECLAIM_REBOOT
,
6985 .state_flag_bit
= NFS_STATE_RECLAIM_REBOOT
,
6986 .recover_open
= nfs4_open_reclaim
,
6987 .recover_lock
= nfs4_lock_reclaim
,
6988 .establish_clid
= nfs41_init_clientid
,
6989 .get_clid_cred
= nfs4_get_exchange_id_cred
,
6990 .reclaim_complete
= nfs41_proc_reclaim_complete
,
6991 .detect_trunking
= nfs41_discover_server_trunking
,
6993 #endif /* CONFIG_NFS_V4_1 */
6995 static const struct nfs4_state_recovery_ops nfs40_nograce_recovery_ops
= {
6996 .owner_flag_bit
= NFS_OWNER_RECLAIM_NOGRACE
,
6997 .state_flag_bit
= NFS_STATE_RECLAIM_NOGRACE
,
6998 .recover_open
= nfs40_open_expired
,
6999 .recover_lock
= nfs4_lock_expired
,
7000 .establish_clid
= nfs4_init_clientid
,
7001 .get_clid_cred
= nfs4_get_setclientid_cred
,
7004 #if defined(CONFIG_NFS_V4_1)
7005 static const struct nfs4_state_recovery_ops nfs41_nograce_recovery_ops
= {
7006 .owner_flag_bit
= NFS_OWNER_RECLAIM_NOGRACE
,
7007 .state_flag_bit
= NFS_STATE_RECLAIM_NOGRACE
,
7008 .recover_open
= nfs41_open_expired
,
7009 .recover_lock
= nfs41_lock_expired
,
7010 .establish_clid
= nfs41_init_clientid
,
7011 .get_clid_cred
= nfs4_get_exchange_id_cred
,
7013 #endif /* CONFIG_NFS_V4_1 */
7015 static const struct nfs4_state_maintenance_ops nfs40_state_renewal_ops
= {
7016 .sched_state_renewal
= nfs4_proc_async_renew
,
7017 .get_state_renewal_cred_locked
= nfs4_get_renew_cred_locked
,
7018 .renew_lease
= nfs4_proc_renew
,
7021 #if defined(CONFIG_NFS_V4_1)
7022 static const struct nfs4_state_maintenance_ops nfs41_state_renewal_ops
= {
7023 .sched_state_renewal
= nfs41_proc_async_sequence
,
7024 .get_state_renewal_cred_locked
= nfs4_get_machine_cred_locked
,
7025 .renew_lease
= nfs4_proc_sequence
,
7029 static const struct nfs4_minor_version_ops nfs_v4_0_minor_ops
= {
7031 .init_caps
= NFS_CAP_READDIRPLUS
7032 | NFS_CAP_ATOMIC_OPEN
7033 | NFS_CAP_CHANGE_ATTR
7034 | NFS_CAP_POSIX_LOCK
,
7035 .call_sync
= _nfs4_call_sync
,
7036 .match_stateid
= nfs4_match_stateid
,
7037 .find_root_sec
= nfs4_find_root_sec
,
7038 .free_lock_state
= nfs4_release_lockowner
,
7039 .reboot_recovery_ops
= &nfs40_reboot_recovery_ops
,
7040 .nograce_recovery_ops
= &nfs40_nograce_recovery_ops
,
7041 .state_renewal_ops
= &nfs40_state_renewal_ops
,
7044 #if defined(CONFIG_NFS_V4_1)
7045 static const struct nfs4_minor_version_ops nfs_v4_1_minor_ops
= {
7047 .init_caps
= NFS_CAP_READDIRPLUS
7048 | NFS_CAP_ATOMIC_OPEN
7049 | NFS_CAP_CHANGE_ATTR
7050 | NFS_CAP_POSIX_LOCK
7051 | NFS_CAP_STATEID_NFSV41
7052 | NFS_CAP_ATOMIC_OPEN_V1
,
7053 .call_sync
= nfs4_call_sync_sequence
,
7054 .match_stateid
= nfs41_match_stateid
,
7055 .find_root_sec
= nfs41_find_root_sec
,
7056 .free_lock_state
= nfs41_free_lock_state
,
7057 .reboot_recovery_ops
= &nfs41_reboot_recovery_ops
,
7058 .nograce_recovery_ops
= &nfs41_nograce_recovery_ops
,
7059 .state_renewal_ops
= &nfs41_state_renewal_ops
,
7063 const struct nfs4_minor_version_ops
*nfs_v4_minor_ops
[] = {
7064 [0] = &nfs_v4_0_minor_ops
,
7065 #if defined(CONFIG_NFS_V4_1)
7066 [1] = &nfs_v4_1_minor_ops
,
7070 const struct inode_operations nfs4_dir_inode_operations
= {
7071 .create
= nfs_create
,
7072 .lookup
= nfs_lookup
,
7073 .atomic_open
= nfs_atomic_open
,
7075 .unlink
= nfs_unlink
,
7076 .symlink
= nfs_symlink
,
7080 .rename
= nfs_rename
,
7081 .permission
= nfs_permission
,
7082 .getattr
= nfs_getattr
,
7083 .setattr
= nfs_setattr
,
7084 .getxattr
= generic_getxattr
,
7085 .setxattr
= generic_setxattr
,
7086 .listxattr
= generic_listxattr
,
7087 .removexattr
= generic_removexattr
,
7090 static const struct inode_operations nfs4_file_inode_operations
= {
7091 .permission
= nfs_permission
,
7092 .getattr
= nfs_getattr
,
7093 .setattr
= nfs_setattr
,
7094 .getxattr
= generic_getxattr
,
7095 .setxattr
= generic_setxattr
,
7096 .listxattr
= generic_listxattr
,
7097 .removexattr
= generic_removexattr
,
7100 const struct nfs_rpc_ops nfs_v4_clientops
= {
7101 .version
= 4, /* protocol version */
7102 .dentry_ops
= &nfs4_dentry_operations
,
7103 .dir_inode_ops
= &nfs4_dir_inode_operations
,
7104 .file_inode_ops
= &nfs4_file_inode_operations
,
7105 .file_ops
= &nfs4_file_operations
,
7106 .getroot
= nfs4_proc_get_root
,
7107 .submount
= nfs4_submount
,
7108 .try_mount
= nfs4_try_mount
,
7109 .getattr
= nfs4_proc_getattr
,
7110 .setattr
= nfs4_proc_setattr
,
7111 .lookup
= nfs4_proc_lookup
,
7112 .access
= nfs4_proc_access
,
7113 .readlink
= nfs4_proc_readlink
,
7114 .create
= nfs4_proc_create
,
7115 .remove
= nfs4_proc_remove
,
7116 .unlink_setup
= nfs4_proc_unlink_setup
,
7117 .unlink_rpc_prepare
= nfs4_proc_unlink_rpc_prepare
,
7118 .unlink_done
= nfs4_proc_unlink_done
,
7119 .rename
= nfs4_proc_rename
,
7120 .rename_setup
= nfs4_proc_rename_setup
,
7121 .rename_rpc_prepare
= nfs4_proc_rename_rpc_prepare
,
7122 .rename_done
= nfs4_proc_rename_done
,
7123 .link
= nfs4_proc_link
,
7124 .symlink
= nfs4_proc_symlink
,
7125 .mkdir
= nfs4_proc_mkdir
,
7126 .rmdir
= nfs4_proc_remove
,
7127 .readdir
= nfs4_proc_readdir
,
7128 .mknod
= nfs4_proc_mknod
,
7129 .statfs
= nfs4_proc_statfs
,
7130 .fsinfo
= nfs4_proc_fsinfo
,
7131 .pathconf
= nfs4_proc_pathconf
,
7132 .set_capabilities
= nfs4_server_capabilities
,
7133 .decode_dirent
= nfs4_decode_dirent
,
7134 .read_setup
= nfs4_proc_read_setup
,
7135 .read_pageio_init
= pnfs_pageio_init_read
,
7136 .read_rpc_prepare
= nfs4_proc_read_rpc_prepare
,
7137 .read_done
= nfs4_read_done
,
7138 .write_setup
= nfs4_proc_write_setup
,
7139 .write_pageio_init
= pnfs_pageio_init_write
,
7140 .write_rpc_prepare
= nfs4_proc_write_rpc_prepare
,
7141 .write_done
= nfs4_write_done
,
7142 .commit_setup
= nfs4_proc_commit_setup
,
7143 .commit_rpc_prepare
= nfs4_proc_commit_rpc_prepare
,
7144 .commit_done
= nfs4_commit_done
,
7145 .lock
= nfs4_proc_lock
,
7146 .clear_acl_cache
= nfs4_zap_acl_attr
,
7147 .close_context
= nfs4_close_context
,
7148 .open_context
= nfs4_atomic_open
,
7149 .have_delegation
= nfs4_have_delegation
,
7150 .return_delegation
= nfs4_inode_return_delegation
,
7151 .alloc_client
= nfs4_alloc_client
,
7152 .init_client
= nfs4_init_client
,
7153 .free_client
= nfs4_free_client
,
7154 .create_server
= nfs4_create_server
,
7155 .clone_server
= nfs_clone_server
,
7158 static const struct xattr_handler nfs4_xattr_nfs4_acl_handler
= {
7159 .prefix
= XATTR_NAME_NFSV4_ACL
,
7160 .list
= nfs4_xattr_list_nfs4_acl
,
7161 .get
= nfs4_xattr_get_nfs4_acl
,
7162 .set
= nfs4_xattr_set_nfs4_acl
,
7165 const struct xattr_handler
*nfs4_xattr_handlers
[] = {
7166 &nfs4_xattr_nfs4_acl_handler
,