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
:
111 dprintk("%s could not handle NFSv4 error %d\n",
119 * This is our standard bitmap for GETATTR requests.
121 const u32 nfs4_fattr_bitmap
[3] = {
123 | FATTR4_WORD0_CHANGE
126 | FATTR4_WORD0_FILEID
,
128 | FATTR4_WORD1_NUMLINKS
130 | FATTR4_WORD1_OWNER_GROUP
131 | FATTR4_WORD1_RAWDEV
132 | FATTR4_WORD1_SPACE_USED
133 | FATTR4_WORD1_TIME_ACCESS
134 | FATTR4_WORD1_TIME_METADATA
135 | FATTR4_WORD1_TIME_MODIFY
138 static const u32 nfs4_pnfs_open_bitmap
[3] = {
140 | FATTR4_WORD0_CHANGE
143 | FATTR4_WORD0_FILEID
,
145 | FATTR4_WORD1_NUMLINKS
147 | FATTR4_WORD1_OWNER_GROUP
148 | FATTR4_WORD1_RAWDEV
149 | FATTR4_WORD1_SPACE_USED
150 | FATTR4_WORD1_TIME_ACCESS
151 | FATTR4_WORD1_TIME_METADATA
152 | FATTR4_WORD1_TIME_MODIFY
,
153 FATTR4_WORD2_MDSTHRESHOLD
156 static const u32 nfs4_open_noattr_bitmap
[3] = {
158 | FATTR4_WORD0_CHANGE
159 | FATTR4_WORD0_FILEID
,
162 const u32 nfs4_statfs_bitmap
[2] = {
163 FATTR4_WORD0_FILES_AVAIL
164 | FATTR4_WORD0_FILES_FREE
165 | FATTR4_WORD0_FILES_TOTAL
,
166 FATTR4_WORD1_SPACE_AVAIL
167 | FATTR4_WORD1_SPACE_FREE
168 | FATTR4_WORD1_SPACE_TOTAL
171 const u32 nfs4_pathconf_bitmap
[2] = {
173 | FATTR4_WORD0_MAXNAME
,
177 const u32 nfs4_fsinfo_bitmap
[3] = { FATTR4_WORD0_MAXFILESIZE
178 | FATTR4_WORD0_MAXREAD
179 | FATTR4_WORD0_MAXWRITE
180 | FATTR4_WORD0_LEASE_TIME
,
181 FATTR4_WORD1_TIME_DELTA
182 | FATTR4_WORD1_FS_LAYOUT_TYPES
,
183 FATTR4_WORD2_LAYOUT_BLKSIZE
186 const u32 nfs4_fs_locations_bitmap
[2] = {
188 | FATTR4_WORD0_CHANGE
191 | FATTR4_WORD0_FILEID
192 | FATTR4_WORD0_FS_LOCATIONS
,
194 | FATTR4_WORD1_NUMLINKS
196 | FATTR4_WORD1_OWNER_GROUP
197 | FATTR4_WORD1_RAWDEV
198 | FATTR4_WORD1_SPACE_USED
199 | FATTR4_WORD1_TIME_ACCESS
200 | FATTR4_WORD1_TIME_METADATA
201 | FATTR4_WORD1_TIME_MODIFY
202 | FATTR4_WORD1_MOUNTED_ON_FILEID
205 static void nfs4_setup_readdir(u64 cookie
, __be32
*verifier
, struct dentry
*dentry
,
206 struct nfs4_readdir_arg
*readdir
)
211 readdir
->cookie
= cookie
;
212 memcpy(&readdir
->verifier
, verifier
, sizeof(readdir
->verifier
));
217 memset(&readdir
->verifier
, 0, sizeof(readdir
->verifier
));
222 * NFSv4 servers do not return entries for '.' and '..'
223 * Therefore, we fake these entries here. We let '.'
224 * have cookie 0 and '..' have cookie 1. Note that
225 * when talking to the server, we always send cookie 0
228 start
= p
= kmap_atomic(*readdir
->pages
);
231 *p
++ = xdr_one
; /* next */
232 *p
++ = xdr_zero
; /* cookie, first word */
233 *p
++ = xdr_one
; /* cookie, second word */
234 *p
++ = xdr_one
; /* entry len */
235 memcpy(p
, ".\0\0\0", 4); /* entry */
237 *p
++ = xdr_one
; /* bitmap length */
238 *p
++ = htonl(FATTR4_WORD0_FILEID
); /* bitmap */
239 *p
++ = htonl(8); /* attribute buffer length */
240 p
= xdr_encode_hyper(p
, NFS_FILEID(dentry
->d_inode
));
243 *p
++ = xdr_one
; /* next */
244 *p
++ = xdr_zero
; /* cookie, first word */
245 *p
++ = xdr_two
; /* cookie, second word */
246 *p
++ = xdr_two
; /* entry len */
247 memcpy(p
, "..\0\0", 4); /* entry */
249 *p
++ = xdr_one
; /* bitmap length */
250 *p
++ = htonl(FATTR4_WORD0_FILEID
); /* bitmap */
251 *p
++ = htonl(8); /* attribute buffer length */
252 p
= xdr_encode_hyper(p
, NFS_FILEID(dentry
->d_parent
->d_inode
));
254 readdir
->pgbase
= (char *)p
- (char *)start
;
255 readdir
->count
-= readdir
->pgbase
;
256 kunmap_atomic(start
);
259 static int nfs4_delay(struct rpc_clnt
*clnt
, long *timeout
)
266 *timeout
= NFS4_POLL_RETRY_MIN
;
267 if (*timeout
> NFS4_POLL_RETRY_MAX
)
268 *timeout
= NFS4_POLL_RETRY_MAX
;
269 freezable_schedule_timeout_killable(*timeout
);
270 if (fatal_signal_pending(current
))
276 /* This is the error handling routine for processes that are allowed
279 static int nfs4_handle_exception(struct nfs_server
*server
, int errorcode
, struct nfs4_exception
*exception
)
281 struct nfs_client
*clp
= server
->nfs_client
;
282 struct nfs4_state
*state
= exception
->state
;
283 struct inode
*inode
= exception
->inode
;
286 exception
->retry
= 0;
290 case -NFS4ERR_OPENMODE
:
291 if (inode
&& nfs4_have_delegation(inode
, FMODE_READ
)) {
292 nfs4_inode_return_delegation(inode
);
293 exception
->retry
= 1;
298 ret
= nfs4_schedule_stateid_recovery(server
, state
);
301 goto wait_on_recovery
;
302 case -NFS4ERR_DELEG_REVOKED
:
303 case -NFS4ERR_ADMIN_REVOKED
:
304 case -NFS4ERR_BAD_STATEID
:
307 nfs_remove_bad_delegation(state
->inode
);
308 ret
= nfs4_schedule_stateid_recovery(server
, state
);
311 goto wait_on_recovery
;
312 case -NFS4ERR_EXPIRED
:
314 ret
= nfs4_schedule_stateid_recovery(server
, state
);
318 case -NFS4ERR_STALE_STATEID
:
319 case -NFS4ERR_STALE_CLIENTID
:
320 nfs4_schedule_lease_recovery(clp
);
321 goto wait_on_recovery
;
322 #if defined(CONFIG_NFS_V4_1)
323 case -NFS4ERR_BADSESSION
:
324 case -NFS4ERR_BADSLOT
:
325 case -NFS4ERR_BAD_HIGH_SLOT
:
326 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
327 case -NFS4ERR_DEADSESSION
:
328 case -NFS4ERR_SEQ_FALSE_RETRY
:
329 case -NFS4ERR_SEQ_MISORDERED
:
330 dprintk("%s ERROR: %d Reset session\n", __func__
,
332 nfs4_schedule_session_recovery(clp
->cl_session
, errorcode
);
333 goto wait_on_recovery
;
334 #endif /* defined(CONFIG_NFS_V4_1) */
335 case -NFS4ERR_FILE_OPEN
:
336 if (exception
->timeout
> HZ
) {
337 /* We have retried a decent amount, time to
345 ret
= nfs4_delay(server
->client
, &exception
->timeout
);
348 case -NFS4ERR_RETRY_UNCACHED_REP
:
349 case -NFS4ERR_OLD_STATEID
:
350 exception
->retry
= 1;
352 case -NFS4ERR_BADOWNER
:
353 /* The following works around a Linux server bug! */
354 case -NFS4ERR_BADNAME
:
355 if (server
->caps
& NFS_CAP_UIDGID_NOMAP
) {
356 server
->caps
&= ~NFS_CAP_UIDGID_NOMAP
;
357 exception
->retry
= 1;
358 printk(KERN_WARNING
"NFS: v4 server %s "
359 "does not accept raw "
361 "Reenabling the idmapper.\n",
362 server
->nfs_client
->cl_hostname
);
365 /* We failed to handle the error */
366 return nfs4_map_errors(ret
);
368 ret
= nfs4_wait_clnt_recover(clp
);
370 exception
->retry
= 1;
375 static void do_renew_lease(struct nfs_client
*clp
, unsigned long timestamp
)
377 spin_lock(&clp
->cl_lock
);
378 if (time_before(clp
->cl_last_renewal
,timestamp
))
379 clp
->cl_last_renewal
= timestamp
;
380 spin_unlock(&clp
->cl_lock
);
383 static void renew_lease(const struct nfs_server
*server
, unsigned long timestamp
)
385 do_renew_lease(server
->nfs_client
, timestamp
);
388 #if defined(CONFIG_NFS_V4_1)
390 static void nfs41_sequence_free_slot(struct nfs4_sequence_res
*res
)
392 struct nfs4_session
*session
;
393 struct nfs4_slot_table
*tbl
;
394 bool send_new_highest_used_slotid
= false;
397 /* just wake up the next guy waiting since
398 * we may have not consumed a slot after all */
399 dprintk("%s: No slot\n", __func__
);
402 tbl
= res
->sr_slot
->table
;
403 session
= tbl
->session
;
405 spin_lock(&tbl
->slot_tbl_lock
);
406 /* Be nice to the server: try to ensure that the last transmitted
407 * value for highest_user_slotid <= target_highest_slotid
409 if (tbl
->highest_used_slotid
> tbl
->target_highest_slotid
)
410 send_new_highest_used_slotid
= true;
412 if (nfs41_wake_and_assign_slot(tbl
, res
->sr_slot
)) {
413 send_new_highest_used_slotid
= false;
416 nfs4_free_slot(tbl
, res
->sr_slot
);
418 if (tbl
->highest_used_slotid
!= NFS4_NO_SLOT
)
419 send_new_highest_used_slotid
= false;
421 spin_unlock(&tbl
->slot_tbl_lock
);
423 if (send_new_highest_used_slotid
)
424 nfs41_server_notify_highest_slotid_update(session
->clp
);
427 static int nfs41_sequence_done(struct rpc_task
*task
, struct nfs4_sequence_res
*res
)
429 struct nfs4_session
*session
;
430 struct nfs4_slot
*slot
;
431 struct nfs_client
*clp
;
432 bool interrupted
= false;
435 /* don't increment the sequence number if the task wasn't sent */
436 if (!RPC_WAS_SENT(task
))
440 session
= slot
->table
->session
;
442 if (slot
->interrupted
) {
443 slot
->interrupted
= 0;
447 /* Check the SEQUENCE operation status */
448 switch (res
->sr_status
) {
450 /* Update the slot's sequence and clientid lease timer */
453 do_renew_lease(clp
, res
->sr_timestamp
);
454 /* Check sequence flags */
455 if (res
->sr_status_flags
!= 0)
456 nfs4_schedule_lease_recovery(clp
);
457 nfs41_update_target_slotid(slot
->table
, slot
, res
);
461 * sr_status remains 1 if an RPC level error occurred.
462 * The server may or may not have processed the sequence
464 * Mark the slot as having hosted an interrupted RPC call.
466 slot
->interrupted
= 1;
469 /* The server detected a resend of the RPC call and
470 * returned NFS4ERR_DELAY as per Section 2.10.6.2
473 dprintk("%s: slot=%u seq=%u: Operation in progress\n",
478 case -NFS4ERR_BADSLOT
:
480 * The slot id we used was probably retired. Try again
481 * using a different slot id.
484 case -NFS4ERR_SEQ_MISORDERED
:
486 * Was the last operation on this sequence interrupted?
487 * If so, retry after bumping the sequence number.
494 * Could this slot have been previously retired?
495 * If so, then the server may be expecting seq_nr = 1!
497 if (slot
->seq_nr
!= 1) {
502 case -NFS4ERR_SEQ_FALSE_RETRY
:
506 /* Just update the slot sequence no. */
510 /* The session may be reset by one of the error handlers. */
511 dprintk("%s: Error %d free the slot \n", __func__
, res
->sr_status
);
512 nfs41_sequence_free_slot(res
);
515 if (rpc_restart_call_prepare(task
)) {
521 if (!rpc_restart_call(task
))
523 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
527 static int nfs4_sequence_done(struct rpc_task
*task
,
528 struct nfs4_sequence_res
*res
)
530 if (res
->sr_slot
== NULL
)
532 return nfs41_sequence_done(task
, res
);
535 static void nfs41_init_sequence(struct nfs4_sequence_args
*args
,
536 struct nfs4_sequence_res
*res
, int cache_reply
)
538 args
->sa_slot
= NULL
;
539 args
->sa_cache_this
= 0;
540 args
->sa_privileged
= 0;
542 args
->sa_cache_this
= 1;
546 static void nfs4_set_sequence_privileged(struct nfs4_sequence_args
*args
)
548 args
->sa_privileged
= 1;
551 int nfs41_setup_sequence(struct nfs4_session
*session
,
552 struct nfs4_sequence_args
*args
,
553 struct nfs4_sequence_res
*res
,
554 struct rpc_task
*task
)
556 struct nfs4_slot
*slot
;
557 struct nfs4_slot_table
*tbl
;
559 dprintk("--> %s\n", __func__
);
560 /* slot already allocated? */
561 if (res
->sr_slot
!= NULL
)
564 tbl
= &session
->fc_slot_table
;
566 task
->tk_timeout
= 0;
568 spin_lock(&tbl
->slot_tbl_lock
);
569 if (test_bit(NFS4_SESSION_DRAINING
, &session
->session_state
) &&
570 !args
->sa_privileged
) {
571 /* The state manager will wait until the slot table is empty */
572 dprintk("%s session is draining\n", __func__
);
576 slot
= nfs4_alloc_slot(tbl
);
578 /* If out of memory, try again in 1/4 second */
579 if (slot
== ERR_PTR(-ENOMEM
))
580 task
->tk_timeout
= HZ
>> 2;
581 dprintk("<-- %s: no free slots\n", __func__
);
584 spin_unlock(&tbl
->slot_tbl_lock
);
586 args
->sa_slot
= slot
;
588 dprintk("<-- %s slotid=%d seqid=%d\n", __func__
,
589 slot
->slot_nr
, slot
->seq_nr
);
592 res
->sr_timestamp
= jiffies
;
593 res
->sr_status_flags
= 0;
595 * sr_status is only set in decode_sequence, and so will remain
596 * set to 1 if an rpc level failure occurs.
600 rpc_call_start(task
);
603 /* Privileged tasks are queued with top priority */
604 if (args
->sa_privileged
)
605 rpc_sleep_on_priority(&tbl
->slot_tbl_waitq
, task
,
606 NULL
, RPC_PRIORITY_PRIVILEGED
);
608 rpc_sleep_on(&tbl
->slot_tbl_waitq
, task
, NULL
);
609 spin_unlock(&tbl
->slot_tbl_lock
);
612 EXPORT_SYMBOL_GPL(nfs41_setup_sequence
);
614 int nfs4_setup_sequence(const struct nfs_server
*server
,
615 struct nfs4_sequence_args
*args
,
616 struct nfs4_sequence_res
*res
,
617 struct rpc_task
*task
)
619 struct nfs4_session
*session
= nfs4_get_session(server
);
622 if (session
== NULL
) {
623 rpc_call_start(task
);
627 dprintk("--> %s clp %p session %p sr_slot %d\n",
628 __func__
, session
->clp
, session
, res
->sr_slot
?
629 res
->sr_slot
->slot_nr
: -1);
631 ret
= nfs41_setup_sequence(session
, args
, res
, task
);
633 dprintk("<-- %s status=%d\n", __func__
, ret
);
637 struct nfs41_call_sync_data
{
638 const struct nfs_server
*seq_server
;
639 struct nfs4_sequence_args
*seq_args
;
640 struct nfs4_sequence_res
*seq_res
;
643 static void nfs41_call_sync_prepare(struct rpc_task
*task
, void *calldata
)
645 struct nfs41_call_sync_data
*data
= calldata
;
646 struct nfs4_session
*session
= nfs4_get_session(data
->seq_server
);
648 dprintk("--> %s data->seq_server %p\n", __func__
, data
->seq_server
);
650 nfs41_setup_sequence(session
, data
->seq_args
, data
->seq_res
, task
);
653 static void nfs41_call_sync_done(struct rpc_task
*task
, void *calldata
)
655 struct nfs41_call_sync_data
*data
= calldata
;
657 nfs41_sequence_done(task
, data
->seq_res
);
660 static const struct rpc_call_ops nfs41_call_sync_ops
= {
661 .rpc_call_prepare
= nfs41_call_sync_prepare
,
662 .rpc_call_done
= nfs41_call_sync_done
,
665 static int nfs4_call_sync_sequence(struct rpc_clnt
*clnt
,
666 struct nfs_server
*server
,
667 struct rpc_message
*msg
,
668 struct nfs4_sequence_args
*args
,
669 struct nfs4_sequence_res
*res
)
672 struct rpc_task
*task
;
673 struct nfs41_call_sync_data data
= {
674 .seq_server
= server
,
678 struct rpc_task_setup task_setup
= {
681 .callback_ops
= &nfs41_call_sync_ops
,
682 .callback_data
= &data
685 task
= rpc_run_task(&task_setup
);
689 ret
= task
->tk_status
;
697 void nfs41_init_sequence(struct nfs4_sequence_args
*args
,
698 struct nfs4_sequence_res
*res
, int cache_reply
)
702 static void nfs4_set_sequence_privileged(struct nfs4_sequence_args
*args
)
707 static int nfs4_sequence_done(struct rpc_task
*task
,
708 struct nfs4_sequence_res
*res
)
712 #endif /* CONFIG_NFS_V4_1 */
715 int _nfs4_call_sync(struct rpc_clnt
*clnt
,
716 struct nfs_server
*server
,
717 struct rpc_message
*msg
,
718 struct nfs4_sequence_args
*args
,
719 struct nfs4_sequence_res
*res
)
721 return rpc_call_sync(clnt
, msg
, 0);
725 int nfs4_call_sync(struct rpc_clnt
*clnt
,
726 struct nfs_server
*server
,
727 struct rpc_message
*msg
,
728 struct nfs4_sequence_args
*args
,
729 struct nfs4_sequence_res
*res
,
732 nfs41_init_sequence(args
, res
, cache_reply
);
733 return server
->nfs_client
->cl_mvops
->call_sync(clnt
, server
, msg
,
737 static void update_changeattr(struct inode
*dir
, struct nfs4_change_info
*cinfo
)
739 struct nfs_inode
*nfsi
= NFS_I(dir
);
741 spin_lock(&dir
->i_lock
);
742 nfsi
->cache_validity
|= NFS_INO_INVALID_ATTR
|NFS_INO_INVALID_DATA
;
743 if (!cinfo
->atomic
|| cinfo
->before
!= dir
->i_version
)
744 nfs_force_lookup_revalidate(dir
);
745 dir
->i_version
= cinfo
->after
;
746 nfs_fscache_invalidate(dir
);
747 spin_unlock(&dir
->i_lock
);
750 struct nfs4_opendata
{
752 struct nfs_openargs o_arg
;
753 struct nfs_openres o_res
;
754 struct nfs_open_confirmargs c_arg
;
755 struct nfs_open_confirmres c_res
;
756 struct nfs4_string owner_name
;
757 struct nfs4_string group_name
;
758 struct nfs_fattr f_attr
;
760 struct dentry
*dentry
;
761 struct nfs4_state_owner
*owner
;
762 struct nfs4_state
*state
;
764 unsigned long timestamp
;
765 unsigned int rpc_done
: 1;
771 static void nfs4_init_opendata_res(struct nfs4_opendata
*p
)
773 p
->o_res
.f_attr
= &p
->f_attr
;
774 p
->o_res
.seqid
= p
->o_arg
.seqid
;
775 p
->c_res
.seqid
= p
->c_arg
.seqid
;
776 p
->o_res
.server
= p
->o_arg
.server
;
777 p
->o_res
.access_request
= p
->o_arg
.access
;
778 nfs_fattr_init(&p
->f_attr
);
779 nfs_fattr_init_names(&p
->f_attr
, &p
->owner_name
, &p
->group_name
);
782 static struct nfs4_opendata
*nfs4_opendata_alloc(struct dentry
*dentry
,
783 struct nfs4_state_owner
*sp
, fmode_t fmode
, int flags
,
784 const struct iattr
*attrs
,
785 enum open_claim_type4 claim
,
788 struct dentry
*parent
= dget_parent(dentry
);
789 struct inode
*dir
= parent
->d_inode
;
790 struct nfs_server
*server
= NFS_SERVER(dir
);
791 struct nfs4_opendata
*p
;
793 p
= kzalloc(sizeof(*p
), gfp_mask
);
796 p
->o_arg
.seqid
= nfs_alloc_seqid(&sp
->so_seqid
, gfp_mask
);
797 if (p
->o_arg
.seqid
== NULL
)
799 nfs_sb_active(dentry
->d_sb
);
800 p
->dentry
= dget(dentry
);
803 atomic_inc(&sp
->so_count
);
804 p
->o_arg
.open_flags
= flags
;
805 p
->o_arg
.fmode
= fmode
& (FMODE_READ
|FMODE_WRITE
);
806 /* don't put an ACCESS op in OPEN compound if O_EXCL, because ACCESS
807 * will return permission denied for all bits until close */
808 if (!(flags
& O_EXCL
)) {
809 /* ask server to check for all possible rights as results
811 p
->o_arg
.access
= NFS4_ACCESS_READ
| NFS4_ACCESS_MODIFY
|
812 NFS4_ACCESS_EXTEND
| NFS4_ACCESS_EXECUTE
;
814 p
->o_arg
.clientid
= server
->nfs_client
->cl_clientid
;
815 p
->o_arg
.id
.create_time
= ktime_to_ns(sp
->so_seqid
.create_time
);
816 p
->o_arg
.id
.uniquifier
= sp
->so_seqid
.owner_id
;
817 p
->o_arg
.name
= &dentry
->d_name
;
818 p
->o_arg
.server
= server
;
819 p
->o_arg
.bitmask
= server
->attr_bitmask
;
820 p
->o_arg
.open_bitmap
= &nfs4_fattr_bitmap
[0];
821 p
->o_arg
.claim
= claim
;
823 case NFS4_OPEN_CLAIM_NULL
:
824 case NFS4_OPEN_CLAIM_DELEGATE_CUR
:
825 case NFS4_OPEN_CLAIM_DELEGATE_PREV
:
826 p
->o_arg
.fh
= NFS_FH(dir
);
828 case NFS4_OPEN_CLAIM_PREVIOUS
:
829 case NFS4_OPEN_CLAIM_FH
:
830 case NFS4_OPEN_CLAIM_DELEG_CUR_FH
:
831 case NFS4_OPEN_CLAIM_DELEG_PREV_FH
:
832 p
->o_arg
.fh
= NFS_FH(dentry
->d_inode
);
834 if (attrs
!= NULL
&& attrs
->ia_valid
!= 0) {
837 p
->o_arg
.u
.attrs
= &p
->attrs
;
838 memcpy(&p
->attrs
, attrs
, sizeof(p
->attrs
));
841 verf
[1] = current
->pid
;
842 memcpy(p
->o_arg
.u
.verifier
.data
, verf
,
843 sizeof(p
->o_arg
.u
.verifier
.data
));
845 p
->c_arg
.fh
= &p
->o_res
.fh
;
846 p
->c_arg
.stateid
= &p
->o_res
.stateid
;
847 p
->c_arg
.seqid
= p
->o_arg
.seqid
;
848 nfs4_init_opendata_res(p
);
858 static void nfs4_opendata_free(struct kref
*kref
)
860 struct nfs4_opendata
*p
= container_of(kref
,
861 struct nfs4_opendata
, kref
);
862 struct super_block
*sb
= p
->dentry
->d_sb
;
864 nfs_free_seqid(p
->o_arg
.seqid
);
865 if (p
->state
!= NULL
)
866 nfs4_put_open_state(p
->state
);
867 nfs4_put_state_owner(p
->owner
);
871 nfs_fattr_free_names(&p
->f_attr
);
875 static void nfs4_opendata_put(struct nfs4_opendata
*p
)
878 kref_put(&p
->kref
, nfs4_opendata_free
);
881 static int nfs4_wait_for_completion_rpc_task(struct rpc_task
*task
)
885 ret
= rpc_wait_for_completion_task(task
);
889 static int can_open_cached(struct nfs4_state
*state
, fmode_t mode
, int open_mode
)
893 if (open_mode
& (O_EXCL
|O_TRUNC
))
895 switch (mode
& (FMODE_READ
|FMODE_WRITE
)) {
897 ret
|= test_bit(NFS_O_RDONLY_STATE
, &state
->flags
) != 0
898 && state
->n_rdonly
!= 0;
901 ret
|= test_bit(NFS_O_WRONLY_STATE
, &state
->flags
) != 0
902 && state
->n_wronly
!= 0;
904 case FMODE_READ
|FMODE_WRITE
:
905 ret
|= test_bit(NFS_O_RDWR_STATE
, &state
->flags
) != 0
906 && state
->n_rdwr
!= 0;
912 static int can_open_delegated(struct nfs_delegation
*delegation
, fmode_t fmode
)
914 if (delegation
== NULL
)
916 if ((delegation
->type
& fmode
) != fmode
)
918 if (test_bit(NFS_DELEGATION_NEED_RECLAIM
, &delegation
->flags
))
920 if (test_bit(NFS_DELEGATION_RETURNING
, &delegation
->flags
))
922 nfs_mark_delegation_referenced(delegation
);
926 static void update_open_stateflags(struct nfs4_state
*state
, fmode_t fmode
)
935 case FMODE_READ
|FMODE_WRITE
:
938 nfs4_state_set_mode_locked(state
, state
->state
| fmode
);
941 static void nfs_set_open_stateid_locked(struct nfs4_state
*state
, nfs4_stateid
*stateid
, fmode_t fmode
)
943 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0)
944 nfs4_stateid_copy(&state
->stateid
, stateid
);
945 nfs4_stateid_copy(&state
->open_stateid
, stateid
);
948 set_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
951 set_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
953 case FMODE_READ
|FMODE_WRITE
:
954 set_bit(NFS_O_RDWR_STATE
, &state
->flags
);
958 static void nfs_set_open_stateid(struct nfs4_state
*state
, nfs4_stateid
*stateid
, fmode_t fmode
)
960 write_seqlock(&state
->seqlock
);
961 nfs_set_open_stateid_locked(state
, stateid
, fmode
);
962 write_sequnlock(&state
->seqlock
);
965 static void __update_open_stateid(struct nfs4_state
*state
, nfs4_stateid
*open_stateid
, const nfs4_stateid
*deleg_stateid
, fmode_t fmode
)
968 * Protect the call to nfs4_state_set_mode_locked and
969 * serialise the stateid update
971 write_seqlock(&state
->seqlock
);
972 if (deleg_stateid
!= NULL
) {
973 nfs4_stateid_copy(&state
->stateid
, deleg_stateid
);
974 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
976 if (open_stateid
!= NULL
)
977 nfs_set_open_stateid_locked(state
, open_stateid
, fmode
);
978 write_sequnlock(&state
->seqlock
);
979 spin_lock(&state
->owner
->so_lock
);
980 update_open_stateflags(state
, fmode
);
981 spin_unlock(&state
->owner
->so_lock
);
984 static int update_open_stateid(struct nfs4_state
*state
, nfs4_stateid
*open_stateid
, nfs4_stateid
*delegation
, fmode_t fmode
)
986 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
987 struct nfs_delegation
*deleg_cur
;
990 fmode
&= (FMODE_READ
|FMODE_WRITE
);
993 deleg_cur
= rcu_dereference(nfsi
->delegation
);
994 if (deleg_cur
== NULL
)
997 spin_lock(&deleg_cur
->lock
);
998 if (nfsi
->delegation
!= deleg_cur
||
999 test_bit(NFS_DELEGATION_RETURNING
, &deleg_cur
->flags
) ||
1000 (deleg_cur
->type
& fmode
) != fmode
)
1001 goto no_delegation_unlock
;
1003 if (delegation
== NULL
)
1004 delegation
= &deleg_cur
->stateid
;
1005 else if (!nfs4_stateid_match(&deleg_cur
->stateid
, delegation
))
1006 goto no_delegation_unlock
;
1008 nfs_mark_delegation_referenced(deleg_cur
);
1009 __update_open_stateid(state
, open_stateid
, &deleg_cur
->stateid
, fmode
);
1011 no_delegation_unlock
:
1012 spin_unlock(&deleg_cur
->lock
);
1016 if (!ret
&& open_stateid
!= NULL
) {
1017 __update_open_stateid(state
, open_stateid
, NULL
, fmode
);
1025 static void nfs4_return_incompatible_delegation(struct inode
*inode
, fmode_t fmode
)
1027 struct nfs_delegation
*delegation
;
1030 delegation
= rcu_dereference(NFS_I(inode
)->delegation
);
1031 if (delegation
== NULL
|| (delegation
->type
& fmode
) == fmode
) {
1036 nfs4_inode_return_delegation(inode
);
1039 static struct nfs4_state
*nfs4_try_open_cached(struct nfs4_opendata
*opendata
)
1041 struct nfs4_state
*state
= opendata
->state
;
1042 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
1043 struct nfs_delegation
*delegation
;
1044 int open_mode
= opendata
->o_arg
.open_flags
& (O_EXCL
|O_TRUNC
);
1045 fmode_t fmode
= opendata
->o_arg
.fmode
;
1046 nfs4_stateid stateid
;
1050 if (can_open_cached(state
, fmode
, open_mode
)) {
1051 spin_lock(&state
->owner
->so_lock
);
1052 if (can_open_cached(state
, fmode
, open_mode
)) {
1053 update_open_stateflags(state
, fmode
);
1054 spin_unlock(&state
->owner
->so_lock
);
1055 goto out_return_state
;
1057 spin_unlock(&state
->owner
->so_lock
);
1060 delegation
= rcu_dereference(nfsi
->delegation
);
1061 if (!can_open_delegated(delegation
, fmode
)) {
1065 /* Save the delegation */
1066 nfs4_stateid_copy(&stateid
, &delegation
->stateid
);
1068 ret
= nfs_may_open(state
->inode
, state
->owner
->so_cred
, open_mode
);
1073 /* Try to update the stateid using the delegation */
1074 if (update_open_stateid(state
, NULL
, &stateid
, fmode
))
1075 goto out_return_state
;
1078 return ERR_PTR(ret
);
1080 atomic_inc(&state
->count
);
1085 nfs4_opendata_check_deleg(struct nfs4_opendata
*data
, struct nfs4_state
*state
)
1087 struct nfs_client
*clp
= NFS_SERVER(state
->inode
)->nfs_client
;
1088 struct nfs_delegation
*delegation
;
1089 int delegation_flags
= 0;
1092 delegation
= rcu_dereference(NFS_I(state
->inode
)->delegation
);
1094 delegation_flags
= delegation
->flags
;
1096 if (data
->o_arg
.claim
== NFS4_OPEN_CLAIM_DELEGATE_CUR
) {
1097 pr_err_ratelimited("NFS: Broken NFSv4 server %s is "
1098 "returning a delegation for "
1099 "OPEN(CLAIM_DELEGATE_CUR)\n",
1101 } else if ((delegation_flags
& 1UL<<NFS_DELEGATION_NEED_RECLAIM
) == 0)
1102 nfs_inode_set_delegation(state
->inode
,
1103 data
->owner
->so_cred
,
1106 nfs_inode_reclaim_delegation(state
->inode
,
1107 data
->owner
->so_cred
,
1112 * Check the inode attributes against the CLAIM_PREVIOUS returned attributes
1113 * and update the nfs4_state.
1115 static struct nfs4_state
*
1116 _nfs4_opendata_reclaim_to_nfs4_state(struct nfs4_opendata
*data
)
1118 struct inode
*inode
= data
->state
->inode
;
1119 struct nfs4_state
*state
= data
->state
;
1122 if (!data
->rpc_done
) {
1123 ret
= data
->rpc_status
;
1128 if (!(data
->f_attr
.valid
& NFS_ATTR_FATTR_TYPE
) ||
1129 !(data
->f_attr
.valid
& NFS_ATTR_FATTR_FILEID
) ||
1130 !(data
->f_attr
.valid
& NFS_ATTR_FATTR_CHANGE
))
1134 state
= nfs4_get_open_state(inode
, data
->owner
);
1138 ret
= nfs_refresh_inode(inode
, &data
->f_attr
);
1142 if (data
->o_res
.delegation_type
!= 0)
1143 nfs4_opendata_check_deleg(data
, state
);
1144 update_open_stateid(state
, &data
->o_res
.stateid
, NULL
,
1149 return ERR_PTR(ret
);
1153 static struct nfs4_state
*
1154 _nfs4_opendata_to_nfs4_state(struct nfs4_opendata
*data
)
1156 struct inode
*inode
;
1157 struct nfs4_state
*state
= NULL
;
1160 if (!data
->rpc_done
) {
1161 state
= nfs4_try_open_cached(data
);
1166 if (!(data
->f_attr
.valid
& NFS_ATTR_FATTR
))
1168 inode
= nfs_fhget(data
->dir
->d_sb
, &data
->o_res
.fh
, &data
->f_attr
);
1169 ret
= PTR_ERR(inode
);
1173 state
= nfs4_get_open_state(inode
, data
->owner
);
1176 if (data
->o_res
.delegation_type
!= 0)
1177 nfs4_opendata_check_deleg(data
, state
);
1178 update_open_stateid(state
, &data
->o_res
.stateid
, NULL
,
1182 nfs_release_seqid(data
->o_arg
.seqid
);
1187 return ERR_PTR(ret
);
1190 static struct nfs4_state
*
1191 nfs4_opendata_to_nfs4_state(struct nfs4_opendata
*data
)
1193 if (data
->o_arg
.claim
== NFS4_OPEN_CLAIM_PREVIOUS
)
1194 return _nfs4_opendata_reclaim_to_nfs4_state(data
);
1195 return _nfs4_opendata_to_nfs4_state(data
);
1198 static struct nfs_open_context
*nfs4_state_find_open_context(struct nfs4_state
*state
)
1200 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
1201 struct nfs_open_context
*ctx
;
1203 spin_lock(&state
->inode
->i_lock
);
1204 list_for_each_entry(ctx
, &nfsi
->open_files
, list
) {
1205 if (ctx
->state
!= state
)
1207 get_nfs_open_context(ctx
);
1208 spin_unlock(&state
->inode
->i_lock
);
1211 spin_unlock(&state
->inode
->i_lock
);
1212 return ERR_PTR(-ENOENT
);
1215 static struct nfs4_opendata
*nfs4_open_recoverdata_alloc(struct nfs_open_context
*ctx
,
1216 struct nfs4_state
*state
, enum open_claim_type4 claim
)
1218 struct nfs4_opendata
*opendata
;
1220 opendata
= nfs4_opendata_alloc(ctx
->dentry
, state
->owner
, 0, 0,
1221 NULL
, claim
, GFP_NOFS
);
1222 if (opendata
== NULL
)
1223 return ERR_PTR(-ENOMEM
);
1224 opendata
->state
= state
;
1225 atomic_inc(&state
->count
);
1229 static int nfs4_open_recover_helper(struct nfs4_opendata
*opendata
, fmode_t fmode
, struct nfs4_state
**res
)
1231 struct nfs4_state
*newstate
;
1234 opendata
->o_arg
.open_flags
= 0;
1235 opendata
->o_arg
.fmode
= fmode
;
1236 memset(&opendata
->o_res
, 0, sizeof(opendata
->o_res
));
1237 memset(&opendata
->c_res
, 0, sizeof(opendata
->c_res
));
1238 nfs4_init_opendata_res(opendata
);
1239 ret
= _nfs4_recover_proc_open(opendata
);
1242 newstate
= nfs4_opendata_to_nfs4_state(opendata
);
1243 if (IS_ERR(newstate
))
1244 return PTR_ERR(newstate
);
1245 nfs4_close_state(newstate
, fmode
);
1250 static int nfs4_open_recover(struct nfs4_opendata
*opendata
, struct nfs4_state
*state
)
1252 struct nfs4_state
*newstate
;
1255 /* memory barrier prior to reading state->n_* */
1256 clear_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1258 if (state
->n_rdwr
!= 0) {
1259 clear_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1260 ret
= nfs4_open_recover_helper(opendata
, FMODE_READ
|FMODE_WRITE
, &newstate
);
1263 if (newstate
!= state
)
1266 if (state
->n_wronly
!= 0) {
1267 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1268 ret
= nfs4_open_recover_helper(opendata
, FMODE_WRITE
, &newstate
);
1271 if (newstate
!= state
)
1274 if (state
->n_rdonly
!= 0) {
1275 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1276 ret
= nfs4_open_recover_helper(opendata
, FMODE_READ
, &newstate
);
1279 if (newstate
!= state
)
1283 * We may have performed cached opens for all three recoveries.
1284 * Check if we need to update the current stateid.
1286 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0 &&
1287 !nfs4_stateid_match(&state
->stateid
, &state
->open_stateid
)) {
1288 write_seqlock(&state
->seqlock
);
1289 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0)
1290 nfs4_stateid_copy(&state
->stateid
, &state
->open_stateid
);
1291 write_sequnlock(&state
->seqlock
);
1298 * reclaim state on the server after a reboot.
1300 static int _nfs4_do_open_reclaim(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1302 struct nfs_delegation
*delegation
;
1303 struct nfs4_opendata
*opendata
;
1304 fmode_t delegation_type
= 0;
1307 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
,
1308 NFS4_OPEN_CLAIM_PREVIOUS
);
1309 if (IS_ERR(opendata
))
1310 return PTR_ERR(opendata
);
1312 delegation
= rcu_dereference(NFS_I(state
->inode
)->delegation
);
1313 if (delegation
!= NULL
&& test_bit(NFS_DELEGATION_NEED_RECLAIM
, &delegation
->flags
) != 0)
1314 delegation_type
= delegation
->type
;
1316 opendata
->o_arg
.u
.delegation_type
= delegation_type
;
1317 status
= nfs4_open_recover(opendata
, state
);
1318 nfs4_opendata_put(opendata
);
1322 static int nfs4_do_open_reclaim(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1324 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1325 struct nfs4_exception exception
= { };
1328 err
= _nfs4_do_open_reclaim(ctx
, state
);
1329 if (err
!= -NFS4ERR_DELAY
)
1331 nfs4_handle_exception(server
, err
, &exception
);
1332 } while (exception
.retry
);
1336 static int nfs4_open_reclaim(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
1338 struct nfs_open_context
*ctx
;
1341 ctx
= nfs4_state_find_open_context(state
);
1343 return PTR_ERR(ctx
);
1344 ret
= nfs4_do_open_reclaim(ctx
, state
);
1345 put_nfs_open_context(ctx
);
1349 static int _nfs4_open_delegation_recall(struct nfs_open_context
*ctx
, struct nfs4_state
*state
, const nfs4_stateid
*stateid
)
1351 struct nfs4_opendata
*opendata
;
1354 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
,
1355 NFS4_OPEN_CLAIM_DELEGATE_CUR
);
1356 if (IS_ERR(opendata
))
1357 return PTR_ERR(opendata
);
1358 nfs4_stateid_copy(&opendata
->o_arg
.u
.delegation
, stateid
);
1359 ret
= nfs4_open_recover(opendata
, state
);
1360 nfs4_opendata_put(opendata
);
1364 int nfs4_open_delegation_recall(struct nfs_open_context
*ctx
, struct nfs4_state
*state
, const nfs4_stateid
*stateid
)
1366 struct nfs4_exception exception
= { };
1367 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1370 err
= _nfs4_open_delegation_recall(ctx
, state
, stateid
);
1376 case -NFS4ERR_BADSESSION
:
1377 case -NFS4ERR_BADSLOT
:
1378 case -NFS4ERR_BAD_HIGH_SLOT
:
1379 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
1380 case -NFS4ERR_DEADSESSION
:
1381 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1382 nfs4_schedule_session_recovery(server
->nfs_client
->cl_session
, err
);
1385 case -NFS4ERR_STALE_CLIENTID
:
1386 case -NFS4ERR_STALE_STATEID
:
1387 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1388 case -NFS4ERR_EXPIRED
:
1389 /* Don't recall a delegation if it was lost */
1390 nfs4_schedule_lease_recovery(server
->nfs_client
);
1393 case -NFS4ERR_DELEG_REVOKED
:
1394 case -NFS4ERR_ADMIN_REVOKED
:
1395 case -NFS4ERR_BAD_STATEID
:
1396 nfs_inode_find_state_and_recover(state
->inode
,
1398 nfs4_schedule_stateid_recovery(server
, state
);
1403 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1404 err
= nfs4_handle_exception(server
, err
, &exception
);
1405 } while (exception
.retry
);
1410 static void nfs4_open_confirm_done(struct rpc_task
*task
, void *calldata
)
1412 struct nfs4_opendata
*data
= calldata
;
1414 data
->rpc_status
= task
->tk_status
;
1415 if (data
->rpc_status
== 0) {
1416 nfs4_stateid_copy(&data
->o_res
.stateid
, &data
->c_res
.stateid
);
1417 nfs_confirm_seqid(&data
->owner
->so_seqid
, 0);
1418 renew_lease(data
->o_res
.server
, data
->timestamp
);
1423 static void nfs4_open_confirm_release(void *calldata
)
1425 struct nfs4_opendata
*data
= calldata
;
1426 struct nfs4_state
*state
= NULL
;
1428 /* If this request hasn't been cancelled, do nothing */
1429 if (data
->cancelled
== 0)
1431 /* In case of error, no cleanup! */
1432 if (!data
->rpc_done
)
1434 state
= nfs4_opendata_to_nfs4_state(data
);
1436 nfs4_close_state(state
, data
->o_arg
.fmode
);
1438 nfs4_opendata_put(data
);
1441 static const struct rpc_call_ops nfs4_open_confirm_ops
= {
1442 .rpc_call_done
= nfs4_open_confirm_done
,
1443 .rpc_release
= nfs4_open_confirm_release
,
1447 * Note: On error, nfs4_proc_open_confirm will free the struct nfs4_opendata
1449 static int _nfs4_proc_open_confirm(struct nfs4_opendata
*data
)
1451 struct nfs_server
*server
= NFS_SERVER(data
->dir
->d_inode
);
1452 struct rpc_task
*task
;
1453 struct rpc_message msg
= {
1454 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_CONFIRM
],
1455 .rpc_argp
= &data
->c_arg
,
1456 .rpc_resp
= &data
->c_res
,
1457 .rpc_cred
= data
->owner
->so_cred
,
1459 struct rpc_task_setup task_setup_data
= {
1460 .rpc_client
= server
->client
,
1461 .rpc_message
= &msg
,
1462 .callback_ops
= &nfs4_open_confirm_ops
,
1463 .callback_data
= data
,
1464 .workqueue
= nfsiod_workqueue
,
1465 .flags
= RPC_TASK_ASYNC
,
1469 kref_get(&data
->kref
);
1471 data
->rpc_status
= 0;
1472 data
->timestamp
= jiffies
;
1473 task
= rpc_run_task(&task_setup_data
);
1475 return PTR_ERR(task
);
1476 status
= nfs4_wait_for_completion_rpc_task(task
);
1478 data
->cancelled
= 1;
1481 status
= data
->rpc_status
;
1486 static void nfs4_open_prepare(struct rpc_task
*task
, void *calldata
)
1488 struct nfs4_opendata
*data
= calldata
;
1489 struct nfs4_state_owner
*sp
= data
->owner
;
1491 if (nfs_wait_on_sequence(data
->o_arg
.seqid
, task
) != 0)
1494 * Check if we still need to send an OPEN call, or if we can use
1495 * a delegation instead.
1497 if (data
->state
!= NULL
) {
1498 struct nfs_delegation
*delegation
;
1500 if (can_open_cached(data
->state
, data
->o_arg
.fmode
, data
->o_arg
.open_flags
))
1503 delegation
= rcu_dereference(NFS_I(data
->state
->inode
)->delegation
);
1504 if (data
->o_arg
.claim
!= NFS4_OPEN_CLAIM_DELEGATE_CUR
&&
1505 can_open_delegated(delegation
, data
->o_arg
.fmode
))
1506 goto unlock_no_action
;
1509 /* Update client id. */
1510 data
->o_arg
.clientid
= sp
->so_server
->nfs_client
->cl_clientid
;
1511 if (data
->o_arg
.claim
== NFS4_OPEN_CLAIM_PREVIOUS
) {
1512 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_NOATTR
];
1513 data
->o_arg
.open_bitmap
= &nfs4_open_noattr_bitmap
[0];
1514 nfs_copy_fh(&data
->o_res
.fh
, data
->o_arg
.fh
);
1516 data
->timestamp
= jiffies
;
1517 if (nfs4_setup_sequence(data
->o_arg
.server
,
1518 &data
->o_arg
.seq_args
,
1519 &data
->o_res
.seq_res
,
1521 nfs_release_seqid(data
->o_arg
.seqid
);
1526 task
->tk_action
= NULL
;
1528 nfs4_sequence_done(task
, &data
->o_res
.seq_res
);
1531 static void nfs4_open_done(struct rpc_task
*task
, void *calldata
)
1533 struct nfs4_opendata
*data
= calldata
;
1535 data
->rpc_status
= task
->tk_status
;
1537 if (!nfs4_sequence_done(task
, &data
->o_res
.seq_res
))
1540 if (task
->tk_status
== 0) {
1541 if (data
->o_res
.f_attr
->valid
& NFS_ATTR_FATTR_TYPE
) {
1542 switch (data
->o_res
.f_attr
->mode
& S_IFMT
) {
1546 data
->rpc_status
= -ELOOP
;
1549 data
->rpc_status
= -EISDIR
;
1552 data
->rpc_status
= -ENOTDIR
;
1555 renew_lease(data
->o_res
.server
, data
->timestamp
);
1556 if (!(data
->o_res
.rflags
& NFS4_OPEN_RESULT_CONFIRM
))
1557 nfs_confirm_seqid(&data
->owner
->so_seqid
, 0);
1562 static void nfs4_open_release(void *calldata
)
1564 struct nfs4_opendata
*data
= calldata
;
1565 struct nfs4_state
*state
= NULL
;
1567 /* If this request hasn't been cancelled, do nothing */
1568 if (data
->cancelled
== 0)
1570 /* In case of error, no cleanup! */
1571 if (data
->rpc_status
!= 0 || !data
->rpc_done
)
1573 /* In case we need an open_confirm, no cleanup! */
1574 if (data
->o_res
.rflags
& NFS4_OPEN_RESULT_CONFIRM
)
1576 state
= nfs4_opendata_to_nfs4_state(data
);
1578 nfs4_close_state(state
, data
->o_arg
.fmode
);
1580 nfs4_opendata_put(data
);
1583 static const struct rpc_call_ops nfs4_open_ops
= {
1584 .rpc_call_prepare
= nfs4_open_prepare
,
1585 .rpc_call_done
= nfs4_open_done
,
1586 .rpc_release
= nfs4_open_release
,
1589 static int nfs4_run_open_task(struct nfs4_opendata
*data
, int isrecover
)
1591 struct inode
*dir
= data
->dir
->d_inode
;
1592 struct nfs_server
*server
= NFS_SERVER(dir
);
1593 struct nfs_openargs
*o_arg
= &data
->o_arg
;
1594 struct nfs_openres
*o_res
= &data
->o_res
;
1595 struct rpc_task
*task
;
1596 struct rpc_message msg
= {
1597 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN
],
1600 .rpc_cred
= data
->owner
->so_cred
,
1602 struct rpc_task_setup task_setup_data
= {
1603 .rpc_client
= server
->client
,
1604 .rpc_message
= &msg
,
1605 .callback_ops
= &nfs4_open_ops
,
1606 .callback_data
= data
,
1607 .workqueue
= nfsiod_workqueue
,
1608 .flags
= RPC_TASK_ASYNC
,
1612 nfs41_init_sequence(&o_arg
->seq_args
, &o_res
->seq_res
, 1);
1613 kref_get(&data
->kref
);
1615 data
->rpc_status
= 0;
1616 data
->cancelled
= 0;
1618 nfs4_set_sequence_privileged(&o_arg
->seq_args
);
1619 task
= rpc_run_task(&task_setup_data
);
1621 return PTR_ERR(task
);
1622 status
= nfs4_wait_for_completion_rpc_task(task
);
1624 data
->cancelled
= 1;
1627 status
= data
->rpc_status
;
1633 static int _nfs4_recover_proc_open(struct nfs4_opendata
*data
)
1635 struct inode
*dir
= data
->dir
->d_inode
;
1636 struct nfs_openres
*o_res
= &data
->o_res
;
1639 status
= nfs4_run_open_task(data
, 1);
1640 if (status
!= 0 || !data
->rpc_done
)
1643 nfs_fattr_map_and_free_names(NFS_SERVER(dir
), &data
->f_attr
);
1645 if (o_res
->rflags
& NFS4_OPEN_RESULT_CONFIRM
) {
1646 status
= _nfs4_proc_open_confirm(data
);
1654 static int nfs4_opendata_access(struct rpc_cred
*cred
,
1655 struct nfs4_opendata
*opendata
,
1656 struct nfs4_state
*state
, fmode_t fmode
,
1659 struct nfs_access_entry cache
;
1662 /* access call failed or for some reason the server doesn't
1663 * support any access modes -- defer access call until later */
1664 if (opendata
->o_res
.access_supported
== 0)
1668 /* don't check MAY_WRITE - a newly created file may not have
1669 * write mode bits, but POSIX allows the creating process to write.
1670 * use openflags to check for exec, because fmode won't
1671 * always have FMODE_EXEC set when file open for exec. */
1672 if (openflags
& __FMODE_EXEC
) {
1673 /* ONLY check for exec rights */
1675 } else if (fmode
& FMODE_READ
)
1679 cache
.jiffies
= jiffies
;
1680 nfs_access_set_mask(&cache
, opendata
->o_res
.access_result
);
1681 nfs_access_add_cache(state
->inode
, &cache
);
1683 if ((mask
& ~cache
.mask
& (MAY_READ
| MAY_EXEC
)) == 0)
1686 /* even though OPEN succeeded, access is denied. Close the file */
1687 nfs4_close_state(state
, fmode
);
1692 * Note: On error, nfs4_proc_open will free the struct nfs4_opendata
1694 static int _nfs4_proc_open(struct nfs4_opendata
*data
)
1696 struct inode
*dir
= data
->dir
->d_inode
;
1697 struct nfs_server
*server
= NFS_SERVER(dir
);
1698 struct nfs_openargs
*o_arg
= &data
->o_arg
;
1699 struct nfs_openres
*o_res
= &data
->o_res
;
1702 status
= nfs4_run_open_task(data
, 0);
1703 if (!data
->rpc_done
)
1706 if (status
== -NFS4ERR_BADNAME
&&
1707 !(o_arg
->open_flags
& O_CREAT
))
1712 nfs_fattr_map_and_free_names(server
, &data
->f_attr
);
1714 if (o_arg
->open_flags
& O_CREAT
)
1715 update_changeattr(dir
, &o_res
->cinfo
);
1716 if ((o_res
->rflags
& NFS4_OPEN_RESULT_LOCKTYPE_POSIX
) == 0)
1717 server
->caps
&= ~NFS_CAP_POSIX_LOCK
;
1718 if(o_res
->rflags
& NFS4_OPEN_RESULT_CONFIRM
) {
1719 status
= _nfs4_proc_open_confirm(data
);
1723 if (!(o_res
->f_attr
->valid
& NFS_ATTR_FATTR
))
1724 _nfs4_proc_getattr(server
, &o_res
->fh
, o_res
->f_attr
);
1728 static int nfs4_recover_expired_lease(struct nfs_server
*server
)
1730 return nfs4_client_recover_expired_lease(server
->nfs_client
);
1735 * reclaim state on the server after a network partition.
1736 * Assumes caller holds the appropriate lock
1738 static int _nfs4_open_expired(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1740 struct nfs4_opendata
*opendata
;
1743 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
,
1744 NFS4_OPEN_CLAIM_NULL
);
1745 if (IS_ERR(opendata
))
1746 return PTR_ERR(opendata
);
1747 ret
= nfs4_open_recover(opendata
, state
);
1749 d_drop(ctx
->dentry
);
1750 nfs4_opendata_put(opendata
);
1754 static int nfs4_do_open_expired(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1756 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1757 struct nfs4_exception exception
= { };
1761 err
= _nfs4_open_expired(ctx
, state
);
1765 case -NFS4ERR_GRACE
:
1766 case -NFS4ERR_DELAY
:
1767 nfs4_handle_exception(server
, err
, &exception
);
1770 } while (exception
.retry
);
1775 static int nfs4_open_expired(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
1777 struct nfs_open_context
*ctx
;
1780 ctx
= nfs4_state_find_open_context(state
);
1782 return PTR_ERR(ctx
);
1783 ret
= nfs4_do_open_expired(ctx
, state
);
1784 put_nfs_open_context(ctx
);
1788 #if defined(CONFIG_NFS_V4_1)
1789 static void nfs41_clear_delegation_stateid(struct nfs4_state
*state
)
1791 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1792 nfs4_stateid
*stateid
= &state
->stateid
;
1795 /* If a state reset has been done, test_stateid is unneeded */
1796 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0)
1799 status
= nfs41_test_stateid(server
, stateid
);
1800 if (status
!= NFS_OK
) {
1801 /* Free the stateid unless the server explicitly
1802 * informs us the stateid is unrecognized. */
1803 if (status
!= -NFS4ERR_BAD_STATEID
)
1804 nfs41_free_stateid(server
, stateid
);
1805 nfs_remove_bad_delegation(state
->inode
);
1807 write_seqlock(&state
->seqlock
);
1808 nfs4_stateid_copy(&state
->stateid
, &state
->open_stateid
);
1809 write_sequnlock(&state
->seqlock
);
1810 clear_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1815 * nfs41_check_open_stateid - possibly free an open stateid
1817 * @state: NFSv4 state for an inode
1819 * Returns NFS_OK if recovery for this stateid is now finished.
1820 * Otherwise a negative NFS4ERR value is returned.
1822 static int nfs41_check_open_stateid(struct nfs4_state
*state
)
1824 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1825 nfs4_stateid
*stateid
= &state
->open_stateid
;
1828 /* If a state reset has been done, test_stateid is unneeded */
1829 if ((test_bit(NFS_O_RDONLY_STATE
, &state
->flags
) == 0) &&
1830 (test_bit(NFS_O_WRONLY_STATE
, &state
->flags
) == 0) &&
1831 (test_bit(NFS_O_RDWR_STATE
, &state
->flags
) == 0))
1832 return -NFS4ERR_BAD_STATEID
;
1834 status
= nfs41_test_stateid(server
, stateid
);
1835 if (status
!= NFS_OK
) {
1836 /* Free the stateid unless the server explicitly
1837 * informs us the stateid is unrecognized. */
1838 if (status
!= -NFS4ERR_BAD_STATEID
)
1839 nfs41_free_stateid(server
, stateid
);
1841 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1842 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1843 clear_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1848 static int nfs41_open_expired(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
1852 nfs41_clear_delegation_stateid(state
);
1853 status
= nfs41_check_open_stateid(state
);
1854 if (status
!= NFS_OK
)
1855 status
= nfs4_open_expired(sp
, state
);
1861 * on an EXCLUSIVE create, the server should send back a bitmask with FATTR4-*
1862 * fields corresponding to attributes that were used to store the verifier.
1863 * Make sure we clobber those fields in the later setattr call
1865 static inline void nfs4_exclusive_attrset(struct nfs4_opendata
*opendata
, struct iattr
*sattr
)
1867 if ((opendata
->o_res
.attrset
[1] & FATTR4_WORD1_TIME_ACCESS
) &&
1868 !(sattr
->ia_valid
& ATTR_ATIME_SET
))
1869 sattr
->ia_valid
|= ATTR_ATIME
;
1871 if ((opendata
->o_res
.attrset
[1] & FATTR4_WORD1_TIME_MODIFY
) &&
1872 !(sattr
->ia_valid
& ATTR_MTIME_SET
))
1873 sattr
->ia_valid
|= ATTR_MTIME
;
1876 static int _nfs4_open_and_get_state(struct nfs4_opendata
*opendata
,
1879 struct nfs4_state
**res
)
1881 struct nfs4_state_owner
*sp
= opendata
->owner
;
1882 struct nfs_server
*server
= sp
->so_server
;
1883 struct nfs4_state
*state
;
1887 seq
= raw_seqcount_begin(&sp
->so_reclaim_seqcount
);
1889 ret
= _nfs4_proc_open(opendata
);
1893 state
= nfs4_opendata_to_nfs4_state(opendata
);
1894 ret
= PTR_ERR(state
);
1897 if (server
->caps
& NFS_CAP_POSIX_LOCK
)
1898 set_bit(NFS_STATE_POSIX_LOCKS
, &state
->flags
);
1900 ret
= nfs4_opendata_access(sp
->so_cred
, opendata
, state
, fmode
, flags
);
1904 if (read_seqcount_retry(&sp
->so_reclaim_seqcount
, seq
)) {
1905 nfs4_schedule_stateid_recovery(server
, state
);
1906 nfs4_wait_clnt_recover(server
->nfs_client
);
1914 * Returns a referenced nfs4_state
1916 static int _nfs4_do_open(struct inode
*dir
,
1917 struct dentry
*dentry
,
1920 struct iattr
*sattr
,
1921 struct rpc_cred
*cred
,
1922 struct nfs4_state
**res
,
1923 struct nfs4_threshold
**ctx_th
)
1925 struct nfs4_state_owner
*sp
;
1926 struct nfs4_state
*state
= NULL
;
1927 struct nfs_server
*server
= NFS_SERVER(dir
);
1928 struct nfs4_opendata
*opendata
;
1931 /* Protect against reboot recovery conflicts */
1933 sp
= nfs4_get_state_owner(server
, cred
, GFP_KERNEL
);
1935 dprintk("nfs4_do_open: nfs4_get_state_owner failed!\n");
1938 status
= nfs4_recover_expired_lease(server
);
1940 goto err_put_state_owner
;
1941 if (dentry
->d_inode
!= NULL
)
1942 nfs4_return_incompatible_delegation(dentry
->d_inode
, fmode
);
1944 opendata
= nfs4_opendata_alloc(dentry
, sp
, fmode
, flags
, sattr
,
1945 NFS4_OPEN_CLAIM_NULL
,
1947 if (opendata
== NULL
)
1948 goto err_put_state_owner
;
1950 if (ctx_th
&& server
->attr_bitmask
[2] & FATTR4_WORD2_MDSTHRESHOLD
) {
1951 opendata
->f_attr
.mdsthreshold
= pnfs_mdsthreshold_alloc();
1952 if (!opendata
->f_attr
.mdsthreshold
)
1953 goto err_opendata_put
;
1954 opendata
->o_arg
.open_bitmap
= &nfs4_pnfs_open_bitmap
[0];
1956 if (dentry
->d_inode
!= NULL
)
1957 opendata
->state
= nfs4_get_open_state(dentry
->d_inode
, sp
);
1959 status
= _nfs4_open_and_get_state(opendata
, fmode
, flags
, &state
);
1961 goto err_opendata_put
;
1963 if (opendata
->o_arg
.open_flags
& O_EXCL
) {
1964 nfs4_exclusive_attrset(opendata
, sattr
);
1966 nfs_fattr_init(opendata
->o_res
.f_attr
);
1967 status
= nfs4_do_setattr(state
->inode
, cred
,
1968 opendata
->o_res
.f_attr
, sattr
,
1971 nfs_setattr_update_inode(state
->inode
, sattr
);
1972 nfs_post_op_update_inode(state
->inode
, opendata
->o_res
.f_attr
);
1975 if (pnfs_use_threshold(ctx_th
, opendata
->f_attr
.mdsthreshold
, server
))
1976 *ctx_th
= opendata
->f_attr
.mdsthreshold
;
1978 kfree(opendata
->f_attr
.mdsthreshold
);
1979 opendata
->f_attr
.mdsthreshold
= NULL
;
1981 nfs4_opendata_put(opendata
);
1982 nfs4_put_state_owner(sp
);
1986 kfree(opendata
->f_attr
.mdsthreshold
);
1987 nfs4_opendata_put(opendata
);
1988 err_put_state_owner
:
1989 nfs4_put_state_owner(sp
);
1996 static struct nfs4_state
*nfs4_do_open(struct inode
*dir
,
1997 struct dentry
*dentry
,
2000 struct iattr
*sattr
,
2001 struct rpc_cred
*cred
,
2002 struct nfs4_threshold
**ctx_th
)
2004 struct nfs4_exception exception
= { };
2005 struct nfs4_state
*res
;
2008 fmode
&= FMODE_READ
|FMODE_WRITE
|FMODE_EXEC
;
2010 status
= _nfs4_do_open(dir
, dentry
, fmode
, flags
, sattr
, cred
,
2014 /* NOTE: BAD_SEQID means the server and client disagree about the
2015 * book-keeping w.r.t. state-changing operations
2016 * (OPEN/CLOSE/LOCK/LOCKU...)
2017 * It is actually a sign of a bug on the client or on the server.
2019 * If we receive a BAD_SEQID error in the particular case of
2020 * doing an OPEN, we assume that nfs_increment_open_seqid() will
2021 * have unhashed the old state_owner for us, and that we can
2022 * therefore safely retry using a new one. We should still warn
2023 * the user though...
2025 if (status
== -NFS4ERR_BAD_SEQID
) {
2026 pr_warn_ratelimited("NFS: v4 server %s "
2027 " returned a bad sequence-id error!\n",
2028 NFS_SERVER(dir
)->nfs_client
->cl_hostname
);
2029 exception
.retry
= 1;
2033 * BAD_STATEID on OPEN means that the server cancelled our
2034 * state before it received the OPEN_CONFIRM.
2035 * Recover by retrying the request as per the discussion
2036 * on Page 181 of RFC3530.
2038 if (status
== -NFS4ERR_BAD_STATEID
) {
2039 exception
.retry
= 1;
2042 if (status
== -EAGAIN
) {
2043 /* We must have found a delegation */
2044 exception
.retry
= 1;
2047 res
= ERR_PTR(nfs4_handle_exception(NFS_SERVER(dir
),
2048 status
, &exception
));
2049 } while (exception
.retry
);
2053 static int _nfs4_do_setattr(struct inode
*inode
, struct rpc_cred
*cred
,
2054 struct nfs_fattr
*fattr
, struct iattr
*sattr
,
2055 struct nfs4_state
*state
)
2057 struct nfs_server
*server
= NFS_SERVER(inode
);
2058 struct nfs_setattrargs arg
= {
2059 .fh
= NFS_FH(inode
),
2062 .bitmask
= server
->attr_bitmask
,
2064 struct nfs_setattrres res
= {
2068 struct rpc_message msg
= {
2069 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETATTR
],
2074 unsigned long timestamp
= jiffies
;
2077 nfs_fattr_init(fattr
);
2079 if (state
!= NULL
&& nfs4_valid_open_stateid(state
)) {
2080 struct nfs_lockowner lockowner
= {
2081 .l_owner
= current
->files
,
2082 .l_pid
= current
->tgid
,
2084 nfs4_select_rw_stateid(&arg
.stateid
, state
, FMODE_WRITE
,
2086 } else if (nfs4_copy_delegation_stateid(&arg
.stateid
, inode
,
2088 /* Use that stateid */
2090 nfs4_stateid_copy(&arg
.stateid
, &zero_stateid
);
2092 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
2093 if (status
== 0 && state
!= NULL
)
2094 renew_lease(server
, timestamp
);
2098 static int nfs4_do_setattr(struct inode
*inode
, struct rpc_cred
*cred
,
2099 struct nfs_fattr
*fattr
, struct iattr
*sattr
,
2100 struct nfs4_state
*state
)
2102 struct nfs_server
*server
= NFS_SERVER(inode
);
2103 struct nfs4_exception exception
= {
2109 err
= _nfs4_do_setattr(inode
, cred
, fattr
, sattr
, state
);
2111 case -NFS4ERR_OPENMODE
:
2112 if (state
&& !(state
->state
& FMODE_WRITE
)) {
2114 if (sattr
->ia_valid
& ATTR_OPEN
)
2119 err
= nfs4_handle_exception(server
, err
, &exception
);
2120 } while (exception
.retry
);
2125 struct nfs4_closedata
{
2126 struct inode
*inode
;
2127 struct nfs4_state
*state
;
2128 struct nfs_closeargs arg
;
2129 struct nfs_closeres res
;
2130 struct nfs_fattr fattr
;
2131 unsigned long timestamp
;
2136 static void nfs4_free_closedata(void *data
)
2138 struct nfs4_closedata
*calldata
= data
;
2139 struct nfs4_state_owner
*sp
= calldata
->state
->owner
;
2140 struct super_block
*sb
= calldata
->state
->inode
->i_sb
;
2143 pnfs_roc_release(calldata
->state
->inode
);
2144 nfs4_put_open_state(calldata
->state
);
2145 nfs_free_seqid(calldata
->arg
.seqid
);
2146 nfs4_put_state_owner(sp
);
2147 nfs_sb_deactive(sb
);
2151 static void nfs4_close_clear_stateid_flags(struct nfs4_state
*state
,
2154 spin_lock(&state
->owner
->so_lock
);
2155 if (!(fmode
& FMODE_READ
))
2156 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
2157 if (!(fmode
& FMODE_WRITE
))
2158 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
2159 clear_bit(NFS_O_RDWR_STATE
, &state
->flags
);
2160 spin_unlock(&state
->owner
->so_lock
);
2163 static void nfs4_close_done(struct rpc_task
*task
, void *data
)
2165 struct nfs4_closedata
*calldata
= data
;
2166 struct nfs4_state
*state
= calldata
->state
;
2167 struct nfs_server
*server
= NFS_SERVER(calldata
->inode
);
2169 dprintk("%s: begin!\n", __func__
);
2170 if (!nfs4_sequence_done(task
, &calldata
->res
.seq_res
))
2172 /* hmm. we are done with the inode, and in the process of freeing
2173 * the state_owner. we keep this around to process errors
2175 switch (task
->tk_status
) {
2178 pnfs_roc_set_barrier(state
->inode
,
2179 calldata
->roc_barrier
);
2180 nfs_set_open_stateid(state
, &calldata
->res
.stateid
, 0);
2181 renew_lease(server
, calldata
->timestamp
);
2182 nfs4_close_clear_stateid_flags(state
,
2183 calldata
->arg
.fmode
);
2185 case -NFS4ERR_STALE_STATEID
:
2186 case -NFS4ERR_OLD_STATEID
:
2187 case -NFS4ERR_BAD_STATEID
:
2188 case -NFS4ERR_EXPIRED
:
2189 if (calldata
->arg
.fmode
== 0)
2192 if (nfs4_async_handle_error(task
, server
, state
) == -EAGAIN
)
2193 rpc_restart_call_prepare(task
);
2195 nfs_release_seqid(calldata
->arg
.seqid
);
2196 nfs_refresh_inode(calldata
->inode
, calldata
->res
.fattr
);
2197 dprintk("%s: done, ret = %d!\n", __func__
, task
->tk_status
);
2200 static void nfs4_close_prepare(struct rpc_task
*task
, void *data
)
2202 struct nfs4_closedata
*calldata
= data
;
2203 struct nfs4_state
*state
= calldata
->state
;
2204 struct inode
*inode
= calldata
->inode
;
2207 dprintk("%s: begin!\n", __func__
);
2208 if (nfs_wait_on_sequence(calldata
->arg
.seqid
, task
) != 0)
2211 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_DOWNGRADE
];
2212 calldata
->arg
.fmode
= FMODE_READ
|FMODE_WRITE
;
2213 spin_lock(&state
->owner
->so_lock
);
2214 /* Calculate the change in open mode */
2215 if (state
->n_rdwr
== 0) {
2216 if (state
->n_rdonly
== 0) {
2217 call_close
|= test_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
2218 call_close
|= test_bit(NFS_O_RDWR_STATE
, &state
->flags
);
2219 calldata
->arg
.fmode
&= ~FMODE_READ
;
2221 if (state
->n_wronly
== 0) {
2222 call_close
|= test_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
2223 call_close
|= test_bit(NFS_O_RDWR_STATE
, &state
->flags
);
2224 calldata
->arg
.fmode
&= ~FMODE_WRITE
;
2227 if (!nfs4_valid_open_stateid(state
))
2229 spin_unlock(&state
->owner
->so_lock
);
2232 /* Note: exit _without_ calling nfs4_close_done */
2236 if (calldata
->arg
.fmode
== 0) {
2237 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CLOSE
];
2238 if (calldata
->roc
&&
2239 pnfs_roc_drain(inode
, &calldata
->roc_barrier
, task
))
2243 nfs_fattr_init(calldata
->res
.fattr
);
2244 calldata
->timestamp
= jiffies
;
2245 if (nfs4_setup_sequence(NFS_SERVER(inode
),
2246 &calldata
->arg
.seq_args
,
2247 &calldata
->res
.seq_res
,
2249 nfs_release_seqid(calldata
->arg
.seqid
);
2250 dprintk("%s: done!\n", __func__
);
2253 task
->tk_action
= NULL
;
2255 nfs4_sequence_done(task
, &calldata
->res
.seq_res
);
2258 static const struct rpc_call_ops nfs4_close_ops
= {
2259 .rpc_call_prepare
= nfs4_close_prepare
,
2260 .rpc_call_done
= nfs4_close_done
,
2261 .rpc_release
= nfs4_free_closedata
,
2265 * It is possible for data to be read/written from a mem-mapped file
2266 * after the sys_close call (which hits the vfs layer as a flush).
2267 * This means that we can't safely call nfsv4 close on a file until
2268 * the inode is cleared. This in turn means that we are not good
2269 * NFSv4 citizens - we do not indicate to the server to update the file's
2270 * share state even when we are done with one of the three share
2271 * stateid's in the inode.
2273 * NOTE: Caller must be holding the sp->so_owner semaphore!
2275 int nfs4_do_close(struct nfs4_state
*state
, gfp_t gfp_mask
, int wait
)
2277 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
2278 struct nfs4_closedata
*calldata
;
2279 struct nfs4_state_owner
*sp
= state
->owner
;
2280 struct rpc_task
*task
;
2281 struct rpc_message msg
= {
2282 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CLOSE
],
2283 .rpc_cred
= state
->owner
->so_cred
,
2285 struct rpc_task_setup task_setup_data
= {
2286 .rpc_client
= server
->client
,
2287 .rpc_message
= &msg
,
2288 .callback_ops
= &nfs4_close_ops
,
2289 .workqueue
= nfsiod_workqueue
,
2290 .flags
= RPC_TASK_ASYNC
,
2292 int status
= -ENOMEM
;
2294 calldata
= kzalloc(sizeof(*calldata
), gfp_mask
);
2295 if (calldata
== NULL
)
2297 nfs41_init_sequence(&calldata
->arg
.seq_args
, &calldata
->res
.seq_res
, 1);
2298 calldata
->inode
= state
->inode
;
2299 calldata
->state
= state
;
2300 calldata
->arg
.fh
= NFS_FH(state
->inode
);
2301 calldata
->arg
.stateid
= &state
->open_stateid
;
2302 /* Serialization for the sequence id */
2303 calldata
->arg
.seqid
= nfs_alloc_seqid(&state
->owner
->so_seqid
, gfp_mask
);
2304 if (calldata
->arg
.seqid
== NULL
)
2305 goto out_free_calldata
;
2306 calldata
->arg
.fmode
= 0;
2307 calldata
->arg
.bitmask
= server
->cache_consistency_bitmask
;
2308 calldata
->res
.fattr
= &calldata
->fattr
;
2309 calldata
->res
.seqid
= calldata
->arg
.seqid
;
2310 calldata
->res
.server
= server
;
2311 calldata
->roc
= pnfs_roc(state
->inode
);
2312 nfs_sb_active(calldata
->inode
->i_sb
);
2314 msg
.rpc_argp
= &calldata
->arg
;
2315 msg
.rpc_resp
= &calldata
->res
;
2316 task_setup_data
.callback_data
= calldata
;
2317 task
= rpc_run_task(&task_setup_data
);
2319 return PTR_ERR(task
);
2322 status
= rpc_wait_for_completion_task(task
);
2328 nfs4_put_open_state(state
);
2329 nfs4_put_state_owner(sp
);
2333 static struct inode
*
2334 nfs4_atomic_open(struct inode
*dir
, struct nfs_open_context
*ctx
, int open_flags
, struct iattr
*attr
)
2336 struct nfs4_state
*state
;
2338 /* Protect against concurrent sillydeletes */
2339 state
= nfs4_do_open(dir
, ctx
->dentry
, ctx
->mode
, open_flags
, attr
,
2340 ctx
->cred
, &ctx
->mdsthreshold
);
2342 return ERR_CAST(state
);
2344 return igrab(state
->inode
);
2347 static void nfs4_close_context(struct nfs_open_context
*ctx
, int is_sync
)
2349 if (ctx
->state
== NULL
)
2352 nfs4_close_sync(ctx
->state
, ctx
->mode
);
2354 nfs4_close_state(ctx
->state
, ctx
->mode
);
2357 static int _nfs4_server_capabilities(struct nfs_server
*server
, struct nfs_fh
*fhandle
)
2359 struct nfs4_server_caps_arg args
= {
2362 struct nfs4_server_caps_res res
= {};
2363 struct rpc_message msg
= {
2364 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SERVER_CAPS
],
2370 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2372 memcpy(server
->attr_bitmask
, res
.attr_bitmask
, sizeof(server
->attr_bitmask
));
2373 server
->caps
&= ~(NFS_CAP_ACLS
|NFS_CAP_HARDLINKS
|
2374 NFS_CAP_SYMLINKS
|NFS_CAP_FILEID
|
2375 NFS_CAP_MODE
|NFS_CAP_NLINK
|NFS_CAP_OWNER
|
2376 NFS_CAP_OWNER_GROUP
|NFS_CAP_ATIME
|
2377 NFS_CAP_CTIME
|NFS_CAP_MTIME
);
2378 if (res
.attr_bitmask
[0] & FATTR4_WORD0_ACL
)
2379 server
->caps
|= NFS_CAP_ACLS
;
2380 if (res
.has_links
!= 0)
2381 server
->caps
|= NFS_CAP_HARDLINKS
;
2382 if (res
.has_symlinks
!= 0)
2383 server
->caps
|= NFS_CAP_SYMLINKS
;
2384 if (res
.attr_bitmask
[0] & FATTR4_WORD0_FILEID
)
2385 server
->caps
|= NFS_CAP_FILEID
;
2386 if (res
.attr_bitmask
[1] & FATTR4_WORD1_MODE
)
2387 server
->caps
|= NFS_CAP_MODE
;
2388 if (res
.attr_bitmask
[1] & FATTR4_WORD1_NUMLINKS
)
2389 server
->caps
|= NFS_CAP_NLINK
;
2390 if (res
.attr_bitmask
[1] & FATTR4_WORD1_OWNER
)
2391 server
->caps
|= NFS_CAP_OWNER
;
2392 if (res
.attr_bitmask
[1] & FATTR4_WORD1_OWNER_GROUP
)
2393 server
->caps
|= NFS_CAP_OWNER_GROUP
;
2394 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_ACCESS
)
2395 server
->caps
|= NFS_CAP_ATIME
;
2396 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_METADATA
)
2397 server
->caps
|= NFS_CAP_CTIME
;
2398 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_MODIFY
)
2399 server
->caps
|= NFS_CAP_MTIME
;
2401 memcpy(server
->cache_consistency_bitmask
, res
.attr_bitmask
, sizeof(server
->cache_consistency_bitmask
));
2402 server
->cache_consistency_bitmask
[0] &= FATTR4_WORD0_CHANGE
|FATTR4_WORD0_SIZE
;
2403 server
->cache_consistency_bitmask
[1] &= FATTR4_WORD1_TIME_METADATA
|FATTR4_WORD1_TIME_MODIFY
;
2404 server
->acl_bitmask
= res
.acl_bitmask
;
2405 server
->fh_expire_type
= res
.fh_expire_type
;
2411 int nfs4_server_capabilities(struct nfs_server
*server
, struct nfs_fh
*fhandle
)
2413 struct nfs4_exception exception
= { };
2416 err
= nfs4_handle_exception(server
,
2417 _nfs4_server_capabilities(server
, fhandle
),
2419 } while (exception
.retry
);
2423 static int _nfs4_lookup_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2424 struct nfs_fsinfo
*info
)
2426 struct nfs4_lookup_root_arg args
= {
2427 .bitmask
= nfs4_fattr_bitmap
,
2429 struct nfs4_lookup_res res
= {
2431 .fattr
= info
->fattr
,
2434 struct rpc_message msg
= {
2435 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOOKUP_ROOT
],
2440 nfs_fattr_init(info
->fattr
);
2441 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2444 static int nfs4_lookup_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2445 struct nfs_fsinfo
*info
)
2447 struct nfs4_exception exception
= { };
2450 err
= _nfs4_lookup_root(server
, fhandle
, info
);
2453 case -NFS4ERR_WRONGSEC
:
2456 err
= nfs4_handle_exception(server
, err
, &exception
);
2458 } while (exception
.retry
);
2463 static int nfs4_lookup_root_sec(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2464 struct nfs_fsinfo
*info
, rpc_authflavor_t flavor
)
2466 struct rpc_auth
*auth
;
2469 auth
= rpcauth_create(flavor
, server
->client
);
2474 ret
= nfs4_lookup_root(server
, fhandle
, info
);
2479 static int nfs4_find_root_sec(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2480 struct nfs_fsinfo
*info
)
2482 int i
, len
, status
= 0;
2483 rpc_authflavor_t flav_array
[NFS_MAX_SECFLAVORS
];
2485 len
= rpcauth_list_flavors(flav_array
, ARRAY_SIZE(flav_array
));
2489 for (i
= 0; i
< len
; i
++) {
2490 /* AUTH_UNIX is the default flavor if none was specified,
2491 * thus has already been tried. */
2492 if (flav_array
[i
] == RPC_AUTH_UNIX
)
2495 status
= nfs4_lookup_root_sec(server
, fhandle
, info
, flav_array
[i
]);
2496 if (status
== -NFS4ERR_WRONGSEC
|| status
== -EACCES
)
2501 * -EACCESS could mean that the user doesn't have correct permissions
2502 * to access the mount. It could also mean that we tried to mount
2503 * with a gss auth flavor, but rpc.gssd isn't running. Either way,
2504 * existing mount programs don't handle -EACCES very well so it should
2505 * be mapped to -EPERM instead.
2507 if (status
== -EACCES
)
2513 * get the file handle for the "/" directory on the server
2515 int nfs4_proc_get_rootfh(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2516 struct nfs_fsinfo
*info
)
2518 int minor_version
= server
->nfs_client
->cl_minorversion
;
2519 int status
= nfs4_lookup_root(server
, fhandle
, info
);
2520 if ((status
== -NFS4ERR_WRONGSEC
) && !(server
->flags
& NFS_MOUNT_SECFLAVOUR
))
2522 * A status of -NFS4ERR_WRONGSEC will be mapped to -EPERM
2523 * by nfs4_map_errors() as this function exits.
2525 status
= nfs_v4_minor_ops
[minor_version
]->find_root_sec(server
, fhandle
, info
);
2527 status
= nfs4_server_capabilities(server
, fhandle
);
2529 status
= nfs4_do_fsinfo(server
, fhandle
, info
);
2530 return nfs4_map_errors(status
);
2533 static int nfs4_proc_get_root(struct nfs_server
*server
, struct nfs_fh
*mntfh
,
2534 struct nfs_fsinfo
*info
)
2537 struct nfs_fattr
*fattr
= info
->fattr
;
2539 error
= nfs4_server_capabilities(server
, mntfh
);
2541 dprintk("nfs4_get_root: getcaps error = %d\n", -error
);
2545 error
= nfs4_proc_getattr(server
, mntfh
, fattr
);
2547 dprintk("nfs4_get_root: getattr error = %d\n", -error
);
2551 if (fattr
->valid
& NFS_ATTR_FATTR_FSID
&&
2552 !nfs_fsid_equal(&server
->fsid
, &fattr
->fsid
))
2553 memcpy(&server
->fsid
, &fattr
->fsid
, sizeof(server
->fsid
));
2559 * Get locations and (maybe) other attributes of a referral.
2560 * Note that we'll actually follow the referral later when
2561 * we detect fsid mismatch in inode revalidation
2563 static int nfs4_get_referral(struct rpc_clnt
*client
, struct inode
*dir
,
2564 const struct qstr
*name
, struct nfs_fattr
*fattr
,
2565 struct nfs_fh
*fhandle
)
2567 int status
= -ENOMEM
;
2568 struct page
*page
= NULL
;
2569 struct nfs4_fs_locations
*locations
= NULL
;
2571 page
= alloc_page(GFP_KERNEL
);
2574 locations
= kmalloc(sizeof(struct nfs4_fs_locations
), GFP_KERNEL
);
2575 if (locations
== NULL
)
2578 status
= nfs4_proc_fs_locations(client
, dir
, name
, locations
, page
);
2581 /* Make sure server returned a different fsid for the referral */
2582 if (nfs_fsid_equal(&NFS_SERVER(dir
)->fsid
, &locations
->fattr
.fsid
)) {
2583 dprintk("%s: server did not return a different fsid for"
2584 " a referral at %s\n", __func__
, name
->name
);
2588 /* Fixup attributes for the nfs_lookup() call to nfs_fhget() */
2589 nfs_fixup_referral_attributes(&locations
->fattr
);
2591 /* replace the lookup nfs_fattr with the locations nfs_fattr */
2592 memcpy(fattr
, &locations
->fattr
, sizeof(struct nfs_fattr
));
2593 memset(fhandle
, 0, sizeof(struct nfs_fh
));
2601 static int _nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
2603 struct nfs4_getattr_arg args
= {
2605 .bitmask
= server
->attr_bitmask
,
2607 struct nfs4_getattr_res res
= {
2611 struct rpc_message msg
= {
2612 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETATTR
],
2617 nfs_fattr_init(fattr
);
2618 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2621 static int nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
2623 struct nfs4_exception exception
= { };
2626 err
= nfs4_handle_exception(server
,
2627 _nfs4_proc_getattr(server
, fhandle
, fattr
),
2629 } while (exception
.retry
);
2634 * The file is not closed if it is opened due to the a request to change
2635 * the size of the file. The open call will not be needed once the
2636 * VFS layer lookup-intents are implemented.
2638 * Close is called when the inode is destroyed.
2639 * If we haven't opened the file for O_WRONLY, we
2640 * need to in the size_change case to obtain a stateid.
2643 * Because OPEN is always done by name in nfsv4, it is
2644 * possible that we opened a different file by the same
2645 * name. We can recognize this race condition, but we
2646 * can't do anything about it besides returning an error.
2648 * This will be fixed with VFS changes (lookup-intent).
2651 nfs4_proc_setattr(struct dentry
*dentry
, struct nfs_fattr
*fattr
,
2652 struct iattr
*sattr
)
2654 struct inode
*inode
= dentry
->d_inode
;
2655 struct rpc_cred
*cred
= NULL
;
2656 struct nfs4_state
*state
= NULL
;
2659 if (pnfs_ld_layoutret_on_setattr(inode
))
2660 pnfs_commit_and_return_layout(inode
);
2662 nfs_fattr_init(fattr
);
2664 /* Deal with open(O_TRUNC) */
2665 if (sattr
->ia_valid
& ATTR_OPEN
)
2666 sattr
->ia_valid
&= ~(ATTR_MTIME
|ATTR_CTIME
|ATTR_OPEN
);
2668 /* Optimization: if the end result is no change, don't RPC */
2669 if ((sattr
->ia_valid
& ~(ATTR_FILE
)) == 0)
2672 /* Search for an existing open(O_WRITE) file */
2673 if (sattr
->ia_valid
& ATTR_FILE
) {
2674 struct nfs_open_context
*ctx
;
2676 ctx
= nfs_file_open_context(sattr
->ia_file
);
2683 status
= nfs4_do_setattr(inode
, cred
, fattr
, sattr
, state
);
2685 nfs_setattr_update_inode(inode
, sattr
);
2689 static int _nfs4_proc_lookup(struct rpc_clnt
*clnt
, struct inode
*dir
,
2690 const struct qstr
*name
, struct nfs_fh
*fhandle
,
2691 struct nfs_fattr
*fattr
)
2693 struct nfs_server
*server
= NFS_SERVER(dir
);
2695 struct nfs4_lookup_arg args
= {
2696 .bitmask
= server
->attr_bitmask
,
2697 .dir_fh
= NFS_FH(dir
),
2700 struct nfs4_lookup_res res
= {
2705 struct rpc_message msg
= {
2706 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOOKUP
],
2711 nfs_fattr_init(fattr
);
2713 dprintk("NFS call lookup %s\n", name
->name
);
2714 status
= nfs4_call_sync(clnt
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2715 dprintk("NFS reply lookup: %d\n", status
);
2719 static void nfs_fixup_secinfo_attributes(struct nfs_fattr
*fattr
)
2721 fattr
->valid
|= NFS_ATTR_FATTR_TYPE
| NFS_ATTR_FATTR_MODE
|
2722 NFS_ATTR_FATTR_NLINK
| NFS_ATTR_FATTR_MOUNTPOINT
;
2723 fattr
->mode
= S_IFDIR
| S_IRUGO
| S_IXUGO
;
2727 static int nfs4_proc_lookup_common(struct rpc_clnt
**clnt
, struct inode
*dir
,
2728 struct qstr
*name
, struct nfs_fh
*fhandle
,
2729 struct nfs_fattr
*fattr
)
2731 struct nfs4_exception exception
= { };
2732 struct rpc_clnt
*client
= *clnt
;
2735 err
= _nfs4_proc_lookup(client
, dir
, name
, fhandle
, fattr
);
2737 case -NFS4ERR_BADNAME
:
2740 case -NFS4ERR_MOVED
:
2741 err
= nfs4_get_referral(client
, dir
, name
, fattr
, fhandle
);
2743 case -NFS4ERR_WRONGSEC
:
2745 if (client
!= *clnt
)
2748 client
= nfs4_create_sec_client(client
, dir
, name
);
2750 return PTR_ERR(client
);
2752 exception
.retry
= 1;
2755 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
, &exception
);
2757 } while (exception
.retry
);
2762 else if (client
!= *clnt
)
2763 rpc_shutdown_client(client
);
2768 static int nfs4_proc_lookup(struct inode
*dir
, struct qstr
*name
,
2769 struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
2772 struct rpc_clnt
*client
= NFS_CLIENT(dir
);
2774 status
= nfs4_proc_lookup_common(&client
, dir
, name
, fhandle
, fattr
);
2775 if (client
!= NFS_CLIENT(dir
)) {
2776 rpc_shutdown_client(client
);
2777 nfs_fixup_secinfo_attributes(fattr
);
2783 nfs4_proc_lookup_mountpoint(struct inode
*dir
, struct qstr
*name
,
2784 struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
2787 struct rpc_clnt
*client
= rpc_clone_client(NFS_CLIENT(dir
));
2789 status
= nfs4_proc_lookup_common(&client
, dir
, name
, fhandle
, fattr
);
2791 rpc_shutdown_client(client
);
2792 return ERR_PTR(status
);
2797 static int _nfs4_proc_access(struct inode
*inode
, struct nfs_access_entry
*entry
)
2799 struct nfs_server
*server
= NFS_SERVER(inode
);
2800 struct nfs4_accessargs args
= {
2801 .fh
= NFS_FH(inode
),
2802 .bitmask
= server
->cache_consistency_bitmask
,
2804 struct nfs4_accessres res
= {
2807 struct rpc_message msg
= {
2808 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_ACCESS
],
2811 .rpc_cred
= entry
->cred
,
2813 int mode
= entry
->mask
;
2817 * Determine which access bits we want to ask for...
2819 if (mode
& MAY_READ
)
2820 args
.access
|= NFS4_ACCESS_READ
;
2821 if (S_ISDIR(inode
->i_mode
)) {
2822 if (mode
& MAY_WRITE
)
2823 args
.access
|= NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
| NFS4_ACCESS_DELETE
;
2824 if (mode
& MAY_EXEC
)
2825 args
.access
|= NFS4_ACCESS_LOOKUP
;
2827 if (mode
& MAY_WRITE
)
2828 args
.access
|= NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
;
2829 if (mode
& MAY_EXEC
)
2830 args
.access
|= NFS4_ACCESS_EXECUTE
;
2833 res
.fattr
= nfs_alloc_fattr();
2834 if (res
.fattr
== NULL
)
2837 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2839 nfs_access_set_mask(entry
, res
.access
);
2840 nfs_refresh_inode(inode
, res
.fattr
);
2842 nfs_free_fattr(res
.fattr
);
2846 static int nfs4_proc_access(struct inode
*inode
, struct nfs_access_entry
*entry
)
2848 struct nfs4_exception exception
= { };
2851 err
= nfs4_handle_exception(NFS_SERVER(inode
),
2852 _nfs4_proc_access(inode
, entry
),
2854 } while (exception
.retry
);
2859 * TODO: For the time being, we don't try to get any attributes
2860 * along with any of the zero-copy operations READ, READDIR,
2863 * In the case of the first three, we want to put the GETATTR
2864 * after the read-type operation -- this is because it is hard
2865 * to predict the length of a GETATTR response in v4, and thus
2866 * align the READ data correctly. This means that the GETATTR
2867 * may end up partially falling into the page cache, and we should
2868 * shift it into the 'tail' of the xdr_buf before processing.
2869 * To do this efficiently, we need to know the total length
2870 * of data received, which doesn't seem to be available outside
2873 * In the case of WRITE, we also want to put the GETATTR after
2874 * the operation -- in this case because we want to make sure
2875 * we get the post-operation mtime and size.
2877 * Both of these changes to the XDR layer would in fact be quite
2878 * minor, but I decided to leave them for a subsequent patch.
2880 static int _nfs4_proc_readlink(struct inode
*inode
, struct page
*page
,
2881 unsigned int pgbase
, unsigned int pglen
)
2883 struct nfs4_readlink args
= {
2884 .fh
= NFS_FH(inode
),
2889 struct nfs4_readlink_res res
;
2890 struct rpc_message msg
= {
2891 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READLINK
],
2896 return nfs4_call_sync(NFS_SERVER(inode
)->client
, NFS_SERVER(inode
), &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2899 static int nfs4_proc_readlink(struct inode
*inode
, struct page
*page
,
2900 unsigned int pgbase
, unsigned int pglen
)
2902 struct nfs4_exception exception
= { };
2905 err
= nfs4_handle_exception(NFS_SERVER(inode
),
2906 _nfs4_proc_readlink(inode
, page
, pgbase
, pglen
),
2908 } while (exception
.retry
);
2913 * This is just for mknod. open(O_CREAT) will always do ->open_context().
2916 nfs4_proc_create(struct inode
*dir
, struct dentry
*dentry
, struct iattr
*sattr
,
2919 struct nfs_open_context
*ctx
;
2920 struct nfs4_state
*state
;
2923 ctx
= alloc_nfs_open_context(dentry
, FMODE_READ
);
2925 return PTR_ERR(ctx
);
2927 sattr
->ia_mode
&= ~current_umask();
2928 state
= nfs4_do_open(dir
, dentry
, ctx
->mode
,
2929 flags
, sattr
, ctx
->cred
,
2930 &ctx
->mdsthreshold
);
2932 if (IS_ERR(state
)) {
2933 status
= PTR_ERR(state
);
2936 d_add(dentry
, igrab(state
->inode
));
2937 nfs_set_verifier(dentry
, nfs_save_change_attribute(dir
));
2940 put_nfs_open_context(ctx
);
2944 static int _nfs4_proc_remove(struct inode
*dir
, struct qstr
*name
)
2946 struct nfs_server
*server
= NFS_SERVER(dir
);
2947 struct nfs_removeargs args
= {
2951 struct nfs_removeres res
= {
2954 struct rpc_message msg
= {
2955 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_REMOVE
],
2961 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 1);
2963 update_changeattr(dir
, &res
.cinfo
);
2967 static int nfs4_proc_remove(struct inode
*dir
, struct qstr
*name
)
2969 struct nfs4_exception exception
= { };
2972 err
= nfs4_handle_exception(NFS_SERVER(dir
),
2973 _nfs4_proc_remove(dir
, name
),
2975 } while (exception
.retry
);
2979 static void nfs4_proc_unlink_setup(struct rpc_message
*msg
, struct inode
*dir
)
2981 struct nfs_server
*server
= NFS_SERVER(dir
);
2982 struct nfs_removeargs
*args
= msg
->rpc_argp
;
2983 struct nfs_removeres
*res
= msg
->rpc_resp
;
2985 res
->server
= server
;
2986 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_REMOVE
];
2987 nfs41_init_sequence(&args
->seq_args
, &res
->seq_res
, 1);
2990 static void nfs4_proc_unlink_rpc_prepare(struct rpc_task
*task
, struct nfs_unlinkdata
*data
)
2992 nfs4_setup_sequence(NFS_SERVER(data
->dir
),
2993 &data
->args
.seq_args
,
2998 static int nfs4_proc_unlink_done(struct rpc_task
*task
, struct inode
*dir
)
3000 struct nfs_removeres
*res
= task
->tk_msg
.rpc_resp
;
3002 if (!nfs4_sequence_done(task
, &res
->seq_res
))
3004 if (nfs4_async_handle_error(task
, res
->server
, NULL
) == -EAGAIN
)
3006 update_changeattr(dir
, &res
->cinfo
);
3010 static void nfs4_proc_rename_setup(struct rpc_message
*msg
, struct inode
*dir
)
3012 struct nfs_server
*server
= NFS_SERVER(dir
);
3013 struct nfs_renameargs
*arg
= msg
->rpc_argp
;
3014 struct nfs_renameres
*res
= msg
->rpc_resp
;
3016 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENAME
];
3017 res
->server
= server
;
3018 nfs41_init_sequence(&arg
->seq_args
, &res
->seq_res
, 1);
3021 static void nfs4_proc_rename_rpc_prepare(struct rpc_task
*task
, struct nfs_renamedata
*data
)
3023 nfs4_setup_sequence(NFS_SERVER(data
->old_dir
),
3024 &data
->args
.seq_args
,
3029 static int nfs4_proc_rename_done(struct rpc_task
*task
, struct inode
*old_dir
,
3030 struct inode
*new_dir
)
3032 struct nfs_renameres
*res
= task
->tk_msg
.rpc_resp
;
3034 if (!nfs4_sequence_done(task
, &res
->seq_res
))
3036 if (nfs4_async_handle_error(task
, res
->server
, NULL
) == -EAGAIN
)
3039 update_changeattr(old_dir
, &res
->old_cinfo
);
3040 update_changeattr(new_dir
, &res
->new_cinfo
);
3044 static int _nfs4_proc_rename(struct inode
*old_dir
, struct qstr
*old_name
,
3045 struct inode
*new_dir
, struct qstr
*new_name
)
3047 struct nfs_server
*server
= NFS_SERVER(old_dir
);
3048 struct nfs_renameargs arg
= {
3049 .old_dir
= NFS_FH(old_dir
),
3050 .new_dir
= NFS_FH(new_dir
),
3051 .old_name
= old_name
,
3052 .new_name
= new_name
,
3054 struct nfs_renameres res
= {
3057 struct rpc_message msg
= {
3058 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENAME
],
3062 int status
= -ENOMEM
;
3064 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
3066 update_changeattr(old_dir
, &res
.old_cinfo
);
3067 update_changeattr(new_dir
, &res
.new_cinfo
);
3072 static int nfs4_proc_rename(struct inode
*old_dir
, struct qstr
*old_name
,
3073 struct inode
*new_dir
, struct qstr
*new_name
)
3075 struct nfs4_exception exception
= { };
3078 err
= nfs4_handle_exception(NFS_SERVER(old_dir
),
3079 _nfs4_proc_rename(old_dir
, old_name
,
3082 } while (exception
.retry
);
3086 static int _nfs4_proc_link(struct inode
*inode
, struct inode
*dir
, struct qstr
*name
)
3088 struct nfs_server
*server
= NFS_SERVER(inode
);
3089 struct nfs4_link_arg arg
= {
3090 .fh
= NFS_FH(inode
),
3091 .dir_fh
= NFS_FH(dir
),
3093 .bitmask
= server
->attr_bitmask
,
3095 struct nfs4_link_res res
= {
3098 struct rpc_message msg
= {
3099 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LINK
],
3103 int status
= -ENOMEM
;
3105 res
.fattr
= nfs_alloc_fattr();
3106 if (res
.fattr
== NULL
)
3109 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
3111 update_changeattr(dir
, &res
.cinfo
);
3112 nfs_post_op_update_inode(inode
, res
.fattr
);
3115 nfs_free_fattr(res
.fattr
);
3119 static int nfs4_proc_link(struct inode
*inode
, struct inode
*dir
, struct qstr
*name
)
3121 struct nfs4_exception exception
= { };
3124 err
= nfs4_handle_exception(NFS_SERVER(inode
),
3125 _nfs4_proc_link(inode
, dir
, name
),
3127 } while (exception
.retry
);
3131 struct nfs4_createdata
{
3132 struct rpc_message msg
;
3133 struct nfs4_create_arg arg
;
3134 struct nfs4_create_res res
;
3136 struct nfs_fattr fattr
;
3139 static struct nfs4_createdata
*nfs4_alloc_createdata(struct inode
*dir
,
3140 struct qstr
*name
, struct iattr
*sattr
, u32 ftype
)
3142 struct nfs4_createdata
*data
;
3144 data
= kzalloc(sizeof(*data
), GFP_KERNEL
);
3146 struct nfs_server
*server
= NFS_SERVER(dir
);
3148 data
->msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CREATE
];
3149 data
->msg
.rpc_argp
= &data
->arg
;
3150 data
->msg
.rpc_resp
= &data
->res
;
3151 data
->arg
.dir_fh
= NFS_FH(dir
);
3152 data
->arg
.server
= server
;
3153 data
->arg
.name
= name
;
3154 data
->arg
.attrs
= sattr
;
3155 data
->arg
.ftype
= ftype
;
3156 data
->arg
.bitmask
= server
->attr_bitmask
;
3157 data
->res
.server
= server
;
3158 data
->res
.fh
= &data
->fh
;
3159 data
->res
.fattr
= &data
->fattr
;
3160 nfs_fattr_init(data
->res
.fattr
);
3165 static int nfs4_do_create(struct inode
*dir
, struct dentry
*dentry
, struct nfs4_createdata
*data
)
3167 int status
= nfs4_call_sync(NFS_SERVER(dir
)->client
, NFS_SERVER(dir
), &data
->msg
,
3168 &data
->arg
.seq_args
, &data
->res
.seq_res
, 1);
3170 update_changeattr(dir
, &data
->res
.dir_cinfo
);
3171 status
= nfs_instantiate(dentry
, data
->res
.fh
, data
->res
.fattr
);
3176 static void nfs4_free_createdata(struct nfs4_createdata
*data
)
3181 static int _nfs4_proc_symlink(struct inode
*dir
, struct dentry
*dentry
,
3182 struct page
*page
, unsigned int len
, struct iattr
*sattr
)
3184 struct nfs4_createdata
*data
;
3185 int status
= -ENAMETOOLONG
;
3187 if (len
> NFS4_MAXPATHLEN
)
3191 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4LNK
);
3195 data
->msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SYMLINK
];
3196 data
->arg
.u
.symlink
.pages
= &page
;
3197 data
->arg
.u
.symlink
.len
= len
;
3199 status
= nfs4_do_create(dir
, dentry
, data
);
3201 nfs4_free_createdata(data
);
3206 static int nfs4_proc_symlink(struct inode
*dir
, struct dentry
*dentry
,
3207 struct page
*page
, unsigned int len
, struct iattr
*sattr
)
3209 struct nfs4_exception exception
= { };
3212 err
= nfs4_handle_exception(NFS_SERVER(dir
),
3213 _nfs4_proc_symlink(dir
, dentry
, page
,
3216 } while (exception
.retry
);
3220 static int _nfs4_proc_mkdir(struct inode
*dir
, struct dentry
*dentry
,
3221 struct iattr
*sattr
)
3223 struct nfs4_createdata
*data
;
3224 int status
= -ENOMEM
;
3226 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4DIR
);
3230 status
= nfs4_do_create(dir
, dentry
, data
);
3232 nfs4_free_createdata(data
);
3237 static int nfs4_proc_mkdir(struct inode
*dir
, struct dentry
*dentry
,
3238 struct iattr
*sattr
)
3240 struct nfs4_exception exception
= { };
3243 sattr
->ia_mode
&= ~current_umask();
3245 err
= nfs4_handle_exception(NFS_SERVER(dir
),
3246 _nfs4_proc_mkdir(dir
, dentry
, sattr
),
3248 } while (exception
.retry
);
3252 static int _nfs4_proc_readdir(struct dentry
*dentry
, struct rpc_cred
*cred
,
3253 u64 cookie
, struct page
**pages
, unsigned int count
, int plus
)
3255 struct inode
*dir
= dentry
->d_inode
;
3256 struct nfs4_readdir_arg args
= {
3261 .bitmask
= NFS_SERVER(dentry
->d_inode
)->attr_bitmask
,
3264 struct nfs4_readdir_res res
;
3265 struct rpc_message msg
= {
3266 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READDIR
],
3273 dprintk("%s: dentry = %s/%s, cookie = %Lu\n", __func__
,
3274 dentry
->d_parent
->d_name
.name
,
3275 dentry
->d_name
.name
,
3276 (unsigned long long)cookie
);
3277 nfs4_setup_readdir(cookie
, NFS_I(dir
)->cookieverf
, dentry
, &args
);
3278 res
.pgbase
= args
.pgbase
;
3279 status
= nfs4_call_sync(NFS_SERVER(dir
)->client
, NFS_SERVER(dir
), &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3281 memcpy(NFS_I(dir
)->cookieverf
, res
.verifier
.data
, NFS4_VERIFIER_SIZE
);
3282 status
+= args
.pgbase
;
3285 nfs_invalidate_atime(dir
);
3287 dprintk("%s: returns %d\n", __func__
, status
);
3291 static int nfs4_proc_readdir(struct dentry
*dentry
, struct rpc_cred
*cred
,
3292 u64 cookie
, struct page
**pages
, unsigned int count
, int plus
)
3294 struct nfs4_exception exception
= { };
3297 err
= nfs4_handle_exception(NFS_SERVER(dentry
->d_inode
),
3298 _nfs4_proc_readdir(dentry
, cred
, cookie
,
3299 pages
, count
, plus
),
3301 } while (exception
.retry
);
3305 static int _nfs4_proc_mknod(struct inode
*dir
, struct dentry
*dentry
,
3306 struct iattr
*sattr
, dev_t rdev
)
3308 struct nfs4_createdata
*data
;
3309 int mode
= sattr
->ia_mode
;
3310 int status
= -ENOMEM
;
3312 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4SOCK
);
3317 data
->arg
.ftype
= NF4FIFO
;
3318 else if (S_ISBLK(mode
)) {
3319 data
->arg
.ftype
= NF4BLK
;
3320 data
->arg
.u
.device
.specdata1
= MAJOR(rdev
);
3321 data
->arg
.u
.device
.specdata2
= MINOR(rdev
);
3323 else if (S_ISCHR(mode
)) {
3324 data
->arg
.ftype
= NF4CHR
;
3325 data
->arg
.u
.device
.specdata1
= MAJOR(rdev
);
3326 data
->arg
.u
.device
.specdata2
= MINOR(rdev
);
3327 } else if (!S_ISSOCK(mode
)) {
3332 status
= nfs4_do_create(dir
, dentry
, data
);
3334 nfs4_free_createdata(data
);
3339 static int nfs4_proc_mknod(struct inode
*dir
, struct dentry
*dentry
,
3340 struct iattr
*sattr
, dev_t rdev
)
3342 struct nfs4_exception exception
= { };
3345 sattr
->ia_mode
&= ~current_umask();
3347 err
= nfs4_handle_exception(NFS_SERVER(dir
),
3348 _nfs4_proc_mknod(dir
, dentry
, sattr
, rdev
),
3350 } while (exception
.retry
);
3354 static int _nfs4_proc_statfs(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3355 struct nfs_fsstat
*fsstat
)
3357 struct nfs4_statfs_arg args
= {
3359 .bitmask
= server
->attr_bitmask
,
3361 struct nfs4_statfs_res res
= {
3364 struct rpc_message msg
= {
3365 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_STATFS
],
3370 nfs_fattr_init(fsstat
->fattr
);
3371 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3374 static int nfs4_proc_statfs(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsstat
*fsstat
)
3376 struct nfs4_exception exception
= { };
3379 err
= nfs4_handle_exception(server
,
3380 _nfs4_proc_statfs(server
, fhandle
, fsstat
),
3382 } while (exception
.retry
);
3386 static int _nfs4_do_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3387 struct nfs_fsinfo
*fsinfo
)
3389 struct nfs4_fsinfo_arg args
= {
3391 .bitmask
= server
->attr_bitmask
,
3393 struct nfs4_fsinfo_res res
= {
3396 struct rpc_message msg
= {
3397 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FSINFO
],
3402 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3405 static int nfs4_do_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsinfo
*fsinfo
)
3407 struct nfs4_exception exception
= { };
3411 err
= nfs4_handle_exception(server
,
3412 _nfs4_do_fsinfo(server
, fhandle
, fsinfo
),
3414 } while (exception
.retry
);
3418 static int nfs4_proc_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsinfo
*fsinfo
)
3422 nfs_fattr_init(fsinfo
->fattr
);
3423 error
= nfs4_do_fsinfo(server
, fhandle
, fsinfo
);
3425 /* block layout checks this! */
3426 server
->pnfs_blksize
= fsinfo
->blksize
;
3427 set_pnfs_layoutdriver(server
, fhandle
, fsinfo
->layouttype
);
3433 static int _nfs4_proc_pathconf(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3434 struct nfs_pathconf
*pathconf
)
3436 struct nfs4_pathconf_arg args
= {
3438 .bitmask
= server
->attr_bitmask
,
3440 struct nfs4_pathconf_res res
= {
3441 .pathconf
= pathconf
,
3443 struct rpc_message msg
= {
3444 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_PATHCONF
],
3449 /* None of the pathconf attributes are mandatory to implement */
3450 if ((args
.bitmask
[0] & nfs4_pathconf_bitmap
[0]) == 0) {
3451 memset(pathconf
, 0, sizeof(*pathconf
));
3455 nfs_fattr_init(pathconf
->fattr
);
3456 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3459 static int nfs4_proc_pathconf(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3460 struct nfs_pathconf
*pathconf
)
3462 struct nfs4_exception exception
= { };
3466 err
= nfs4_handle_exception(server
,
3467 _nfs4_proc_pathconf(server
, fhandle
, pathconf
),
3469 } while (exception
.retry
);
3473 int nfs4_set_rw_stateid(nfs4_stateid
*stateid
,
3474 const struct nfs_open_context
*ctx
,
3475 const struct nfs_lock_context
*l_ctx
,
3478 const struct nfs_lockowner
*lockowner
= NULL
;
3481 lockowner
= &l_ctx
->lockowner
;
3482 return nfs4_select_rw_stateid(stateid
, ctx
->state
, fmode
, lockowner
);
3484 EXPORT_SYMBOL_GPL(nfs4_set_rw_stateid
);
3486 static bool nfs4_stateid_is_current(nfs4_stateid
*stateid
,
3487 const struct nfs_open_context
*ctx
,
3488 const struct nfs_lock_context
*l_ctx
,
3491 nfs4_stateid current_stateid
;
3493 if (nfs4_set_rw_stateid(¤t_stateid
, ctx
, l_ctx
, fmode
))
3495 return nfs4_stateid_match(stateid
, ¤t_stateid
);
3498 static bool nfs4_error_stateid_expired(int err
)
3501 case -NFS4ERR_DELEG_REVOKED
:
3502 case -NFS4ERR_ADMIN_REVOKED
:
3503 case -NFS4ERR_BAD_STATEID
:
3504 case -NFS4ERR_STALE_STATEID
:
3505 case -NFS4ERR_OLD_STATEID
:
3506 case -NFS4ERR_OPENMODE
:
3507 case -NFS4ERR_EXPIRED
:
3513 void __nfs4_read_done_cb(struct nfs_read_data
*data
)
3515 nfs_invalidate_atime(data
->header
->inode
);
3518 static int nfs4_read_done_cb(struct rpc_task
*task
, struct nfs_read_data
*data
)
3520 struct nfs_server
*server
= NFS_SERVER(data
->header
->inode
);
3522 if (nfs4_async_handle_error(task
, server
, data
->args
.context
->state
) == -EAGAIN
) {
3523 rpc_restart_call_prepare(task
);
3527 __nfs4_read_done_cb(data
);
3528 if (task
->tk_status
> 0)
3529 renew_lease(server
, data
->timestamp
);
3533 static bool nfs4_read_stateid_changed(struct rpc_task
*task
,
3534 struct nfs_readargs
*args
)
3537 if (!nfs4_error_stateid_expired(task
->tk_status
) ||
3538 nfs4_stateid_is_current(&args
->stateid
,
3543 rpc_restart_call_prepare(task
);
3547 static int nfs4_read_done(struct rpc_task
*task
, struct nfs_read_data
*data
)
3550 dprintk("--> %s\n", __func__
);
3552 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
3554 if (nfs4_read_stateid_changed(task
, &data
->args
))
3556 return data
->read_done_cb
? data
->read_done_cb(task
, data
) :
3557 nfs4_read_done_cb(task
, data
);
3560 static void nfs4_proc_read_setup(struct nfs_read_data
*data
, struct rpc_message
*msg
)
3562 data
->timestamp
= jiffies
;
3563 data
->read_done_cb
= nfs4_read_done_cb
;
3564 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READ
];
3565 nfs41_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 0);
3568 static void nfs4_proc_read_rpc_prepare(struct rpc_task
*task
, struct nfs_read_data
*data
)
3570 if (nfs4_setup_sequence(NFS_SERVER(data
->header
->inode
),
3571 &data
->args
.seq_args
,
3575 nfs4_set_rw_stateid(&data
->args
.stateid
, data
->args
.context
,
3576 data
->args
.lock_context
, FMODE_READ
);
3579 static int nfs4_write_done_cb(struct rpc_task
*task
, struct nfs_write_data
*data
)
3581 struct inode
*inode
= data
->header
->inode
;
3583 if (nfs4_async_handle_error(task
, NFS_SERVER(inode
), data
->args
.context
->state
) == -EAGAIN
) {
3584 rpc_restart_call_prepare(task
);
3587 if (task
->tk_status
>= 0) {
3588 renew_lease(NFS_SERVER(inode
), data
->timestamp
);
3589 nfs_post_op_update_inode_force_wcc(inode
, &data
->fattr
);
3594 static bool nfs4_write_stateid_changed(struct rpc_task
*task
,
3595 struct nfs_writeargs
*args
)
3598 if (!nfs4_error_stateid_expired(task
->tk_status
) ||
3599 nfs4_stateid_is_current(&args
->stateid
,
3604 rpc_restart_call_prepare(task
);
3608 static int nfs4_write_done(struct rpc_task
*task
, struct nfs_write_data
*data
)
3610 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
3612 if (nfs4_write_stateid_changed(task
, &data
->args
))
3614 return data
->write_done_cb
? data
->write_done_cb(task
, data
) :
3615 nfs4_write_done_cb(task
, data
);
3619 bool nfs4_write_need_cache_consistency_data(const struct nfs_write_data
*data
)
3621 const struct nfs_pgio_header
*hdr
= data
->header
;
3623 /* Don't request attributes for pNFS or O_DIRECT writes */
3624 if (data
->ds_clp
!= NULL
|| hdr
->dreq
!= NULL
)
3626 /* Otherwise, request attributes if and only if we don't hold
3629 return nfs4_have_delegation(hdr
->inode
, FMODE_READ
) == 0;
3632 static void nfs4_proc_write_setup(struct nfs_write_data
*data
, struct rpc_message
*msg
)
3634 struct nfs_server
*server
= NFS_SERVER(data
->header
->inode
);
3636 if (!nfs4_write_need_cache_consistency_data(data
)) {
3637 data
->args
.bitmask
= NULL
;
3638 data
->res
.fattr
= NULL
;
3640 data
->args
.bitmask
= server
->cache_consistency_bitmask
;
3642 if (!data
->write_done_cb
)
3643 data
->write_done_cb
= nfs4_write_done_cb
;
3644 data
->res
.server
= server
;
3645 data
->timestamp
= jiffies
;
3647 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_WRITE
];
3648 nfs41_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
3651 static void nfs4_proc_write_rpc_prepare(struct rpc_task
*task
, struct nfs_write_data
*data
)
3653 if (nfs4_setup_sequence(NFS_SERVER(data
->header
->inode
),
3654 &data
->args
.seq_args
,
3658 nfs4_set_rw_stateid(&data
->args
.stateid
, data
->args
.context
,
3659 data
->args
.lock_context
, FMODE_WRITE
);
3662 static void nfs4_proc_commit_rpc_prepare(struct rpc_task
*task
, struct nfs_commit_data
*data
)
3664 nfs4_setup_sequence(NFS_SERVER(data
->inode
),
3665 &data
->args
.seq_args
,
3670 static int nfs4_commit_done_cb(struct rpc_task
*task
, struct nfs_commit_data
*data
)
3672 struct inode
*inode
= data
->inode
;
3674 if (nfs4_async_handle_error(task
, NFS_SERVER(inode
), NULL
) == -EAGAIN
) {
3675 rpc_restart_call_prepare(task
);
3681 static int nfs4_commit_done(struct rpc_task
*task
, struct nfs_commit_data
*data
)
3683 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
3685 return data
->commit_done_cb(task
, data
);
3688 static void nfs4_proc_commit_setup(struct nfs_commit_data
*data
, struct rpc_message
*msg
)
3690 struct nfs_server
*server
= NFS_SERVER(data
->inode
);
3692 if (data
->commit_done_cb
== NULL
)
3693 data
->commit_done_cb
= nfs4_commit_done_cb
;
3694 data
->res
.server
= server
;
3695 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_COMMIT
];
3696 nfs41_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
3699 struct nfs4_renewdata
{
3700 struct nfs_client
*client
;
3701 unsigned long timestamp
;
3705 * nfs4_proc_async_renew(): This is not one of the nfs_rpc_ops; it is a special
3706 * standalone procedure for queueing an asynchronous RENEW.
3708 static void nfs4_renew_release(void *calldata
)
3710 struct nfs4_renewdata
*data
= calldata
;
3711 struct nfs_client
*clp
= data
->client
;
3713 if (atomic_read(&clp
->cl_count
) > 1)
3714 nfs4_schedule_state_renewal(clp
);
3715 nfs_put_client(clp
);
3719 static void nfs4_renew_done(struct rpc_task
*task
, void *calldata
)
3721 struct nfs4_renewdata
*data
= calldata
;
3722 struct nfs_client
*clp
= data
->client
;
3723 unsigned long timestamp
= data
->timestamp
;
3725 if (task
->tk_status
< 0) {
3726 /* Unless we're shutting down, schedule state recovery! */
3727 if (test_bit(NFS_CS_RENEWD
, &clp
->cl_res_state
) == 0)
3729 if (task
->tk_status
!= NFS4ERR_CB_PATH_DOWN
) {
3730 nfs4_schedule_lease_recovery(clp
);
3733 nfs4_schedule_path_down_recovery(clp
);
3735 do_renew_lease(clp
, timestamp
);
3738 static const struct rpc_call_ops nfs4_renew_ops
= {
3739 .rpc_call_done
= nfs4_renew_done
,
3740 .rpc_release
= nfs4_renew_release
,
3743 static int nfs4_proc_async_renew(struct nfs_client
*clp
, struct rpc_cred
*cred
, unsigned renew_flags
)
3745 struct rpc_message msg
= {
3746 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENEW
],
3750 struct nfs4_renewdata
*data
;
3752 if (renew_flags
== 0)
3754 if (!atomic_inc_not_zero(&clp
->cl_count
))
3756 data
= kmalloc(sizeof(*data
), GFP_NOFS
);
3760 data
->timestamp
= jiffies
;
3761 return rpc_call_async(clp
->cl_rpcclient
, &msg
, RPC_TASK_SOFT
,
3762 &nfs4_renew_ops
, data
);
3765 static int nfs4_proc_renew(struct nfs_client
*clp
, struct rpc_cred
*cred
)
3767 struct rpc_message msg
= {
3768 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENEW
],
3772 unsigned long now
= jiffies
;
3775 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, 0);
3778 do_renew_lease(clp
, now
);
3782 static inline int nfs4_server_supports_acls(struct nfs_server
*server
)
3784 return (server
->caps
& NFS_CAP_ACLS
)
3785 && (server
->acl_bitmask
& ACL4_SUPPORT_ALLOW_ACL
)
3786 && (server
->acl_bitmask
& ACL4_SUPPORT_DENY_ACL
);
3789 /* Assuming that XATTR_SIZE_MAX is a multiple of PAGE_SIZE, and that
3790 * it's OK to put sizeof(void) * (XATTR_SIZE_MAX/PAGE_SIZE) bytes on
3793 #define NFS4ACL_MAXPAGES DIV_ROUND_UP(XATTR_SIZE_MAX, PAGE_SIZE)
3795 static int buf_to_pages_noslab(const void *buf
, size_t buflen
,
3796 struct page
**pages
, unsigned int *pgbase
)
3798 struct page
*newpage
, **spages
;
3804 len
= min_t(size_t, PAGE_SIZE
, buflen
);
3805 newpage
= alloc_page(GFP_KERNEL
);
3807 if (newpage
== NULL
)
3809 memcpy(page_address(newpage
), buf
, len
);
3814 } while (buflen
!= 0);
3820 __free_page(spages
[rc
-1]);
3824 struct nfs4_cached_acl
{
3830 static void nfs4_set_cached_acl(struct inode
*inode
, struct nfs4_cached_acl
*acl
)
3832 struct nfs_inode
*nfsi
= NFS_I(inode
);
3834 spin_lock(&inode
->i_lock
);
3835 kfree(nfsi
->nfs4_acl
);
3836 nfsi
->nfs4_acl
= acl
;
3837 spin_unlock(&inode
->i_lock
);
3840 static void nfs4_zap_acl_attr(struct inode
*inode
)
3842 nfs4_set_cached_acl(inode
, NULL
);
3845 static inline ssize_t
nfs4_read_cached_acl(struct inode
*inode
, char *buf
, size_t buflen
)
3847 struct nfs_inode
*nfsi
= NFS_I(inode
);
3848 struct nfs4_cached_acl
*acl
;
3851 spin_lock(&inode
->i_lock
);
3852 acl
= nfsi
->nfs4_acl
;
3855 if (buf
== NULL
) /* user is just asking for length */
3857 if (acl
->cached
== 0)
3859 ret
= -ERANGE
; /* see getxattr(2) man page */
3860 if (acl
->len
> buflen
)
3862 memcpy(buf
, acl
->data
, acl
->len
);
3866 spin_unlock(&inode
->i_lock
);
3870 static void nfs4_write_cached_acl(struct inode
*inode
, struct page
**pages
, size_t pgbase
, size_t acl_len
)
3872 struct nfs4_cached_acl
*acl
;
3873 size_t buflen
= sizeof(*acl
) + acl_len
;
3875 if (buflen
<= PAGE_SIZE
) {
3876 acl
= kmalloc(buflen
, GFP_KERNEL
);
3880 _copy_from_pages(acl
->data
, pages
, pgbase
, acl_len
);
3882 acl
= kmalloc(sizeof(*acl
), GFP_KERNEL
);
3889 nfs4_set_cached_acl(inode
, acl
);
3893 * The getxattr API returns the required buffer length when called with a
3894 * NULL buf. The NFSv4 acl tool then calls getxattr again after allocating
3895 * the required buf. On a NULL buf, we send a page of data to the server
3896 * guessing that the ACL request can be serviced by a page. If so, we cache
3897 * up to the page of ACL data, and the 2nd call to getxattr is serviced by
3898 * the cache. If not so, we throw away the page, and cache the required
3899 * length. The next getxattr call will then produce another round trip to
3900 * the server, this time with the input buf of the required size.
3902 static ssize_t
__nfs4_get_acl_uncached(struct inode
*inode
, void *buf
, size_t buflen
)
3904 struct page
*pages
[NFS4ACL_MAXPAGES
] = {NULL
, };
3905 struct nfs_getaclargs args
= {
3906 .fh
= NFS_FH(inode
),
3910 struct nfs_getaclres res
= {
3913 struct rpc_message msg
= {
3914 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETACL
],
3918 unsigned int npages
= DIV_ROUND_UP(buflen
, PAGE_SIZE
);
3919 int ret
= -ENOMEM
, i
;
3921 /* As long as we're doing a round trip to the server anyway,
3922 * let's be prepared for a page of acl data. */
3925 if (npages
> ARRAY_SIZE(pages
))
3928 for (i
= 0; i
< npages
; i
++) {
3929 pages
[i
] = alloc_page(GFP_KERNEL
);
3934 /* for decoding across pages */
3935 res
.acl_scratch
= alloc_page(GFP_KERNEL
);
3936 if (!res
.acl_scratch
)
3939 args
.acl_len
= npages
* PAGE_SIZE
;
3940 args
.acl_pgbase
= 0;
3942 dprintk("%s buf %p buflen %zu npages %d args.acl_len %zu\n",
3943 __func__
, buf
, buflen
, npages
, args
.acl_len
);
3944 ret
= nfs4_call_sync(NFS_SERVER(inode
)->client
, NFS_SERVER(inode
),
3945 &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3949 /* Handle the case where the passed-in buffer is too short */
3950 if (res
.acl_flags
& NFS4_ACL_TRUNC
) {
3951 /* Did the user only issue a request for the acl length? */
3957 nfs4_write_cached_acl(inode
, pages
, res
.acl_data_offset
, res
.acl_len
);
3959 if (res
.acl_len
> buflen
) {
3963 _copy_from_pages(buf
, pages
, res
.acl_data_offset
, res
.acl_len
);
3968 for (i
= 0; i
< npages
; i
++)
3970 __free_page(pages
[i
]);
3971 if (res
.acl_scratch
)
3972 __free_page(res
.acl_scratch
);
3976 static ssize_t
nfs4_get_acl_uncached(struct inode
*inode
, void *buf
, size_t buflen
)
3978 struct nfs4_exception exception
= { };
3981 ret
= __nfs4_get_acl_uncached(inode
, buf
, buflen
);
3984 ret
= nfs4_handle_exception(NFS_SERVER(inode
), ret
, &exception
);
3985 } while (exception
.retry
);
3989 static ssize_t
nfs4_proc_get_acl(struct inode
*inode
, void *buf
, size_t buflen
)
3991 struct nfs_server
*server
= NFS_SERVER(inode
);
3994 if (!nfs4_server_supports_acls(server
))
3996 ret
= nfs_revalidate_inode(server
, inode
);
3999 if (NFS_I(inode
)->cache_validity
& NFS_INO_INVALID_ACL
)
4000 nfs_zap_acl_cache(inode
);
4001 ret
= nfs4_read_cached_acl(inode
, buf
, buflen
);
4003 /* -ENOENT is returned if there is no ACL or if there is an ACL
4004 * but no cached acl data, just the acl length */
4006 return nfs4_get_acl_uncached(inode
, buf
, buflen
);
4009 static int __nfs4_proc_set_acl(struct inode
*inode
, const void *buf
, size_t buflen
)
4011 struct nfs_server
*server
= NFS_SERVER(inode
);
4012 struct page
*pages
[NFS4ACL_MAXPAGES
];
4013 struct nfs_setaclargs arg
= {
4014 .fh
= NFS_FH(inode
),
4018 struct nfs_setaclres res
;
4019 struct rpc_message msg
= {
4020 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETACL
],
4024 unsigned int npages
= DIV_ROUND_UP(buflen
, PAGE_SIZE
);
4027 if (!nfs4_server_supports_acls(server
))
4029 if (npages
> ARRAY_SIZE(pages
))
4031 i
= buf_to_pages_noslab(buf
, buflen
, arg
.acl_pages
, &arg
.acl_pgbase
);
4034 nfs4_inode_return_delegation(inode
);
4035 ret
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
4038 * Free each page after tx, so the only ref left is
4039 * held by the network stack
4042 put_page(pages
[i
-1]);
4045 * Acl update can result in inode attribute update.
4046 * so mark the attribute cache invalid.
4048 spin_lock(&inode
->i_lock
);
4049 NFS_I(inode
)->cache_validity
|= NFS_INO_INVALID_ATTR
;
4050 spin_unlock(&inode
->i_lock
);
4051 nfs_access_zap_cache(inode
);
4052 nfs_zap_acl_cache(inode
);
4056 static int nfs4_proc_set_acl(struct inode
*inode
, const void *buf
, size_t buflen
)
4058 struct nfs4_exception exception
= { };
4061 err
= nfs4_handle_exception(NFS_SERVER(inode
),
4062 __nfs4_proc_set_acl(inode
, buf
, buflen
),
4064 } while (exception
.retry
);
4069 nfs4_async_handle_error(struct rpc_task
*task
, const struct nfs_server
*server
, struct nfs4_state
*state
)
4071 struct nfs_client
*clp
= server
->nfs_client
;
4073 if (task
->tk_status
>= 0)
4075 switch(task
->tk_status
) {
4076 case -NFS4ERR_DELEG_REVOKED
:
4077 case -NFS4ERR_ADMIN_REVOKED
:
4078 case -NFS4ERR_BAD_STATEID
:
4081 nfs_remove_bad_delegation(state
->inode
);
4082 case -NFS4ERR_OPENMODE
:
4085 if (nfs4_schedule_stateid_recovery(server
, state
) < 0)
4086 goto stateid_invalid
;
4087 goto wait_on_recovery
;
4088 case -NFS4ERR_EXPIRED
:
4089 if (state
!= NULL
) {
4090 if (nfs4_schedule_stateid_recovery(server
, state
) < 0)
4091 goto stateid_invalid
;
4093 case -NFS4ERR_STALE_STATEID
:
4094 case -NFS4ERR_STALE_CLIENTID
:
4095 nfs4_schedule_lease_recovery(clp
);
4096 goto wait_on_recovery
;
4097 #if defined(CONFIG_NFS_V4_1)
4098 case -NFS4ERR_BADSESSION
:
4099 case -NFS4ERR_BADSLOT
:
4100 case -NFS4ERR_BAD_HIGH_SLOT
:
4101 case -NFS4ERR_DEADSESSION
:
4102 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
4103 case -NFS4ERR_SEQ_FALSE_RETRY
:
4104 case -NFS4ERR_SEQ_MISORDERED
:
4105 dprintk("%s ERROR %d, Reset session\n", __func__
,
4107 nfs4_schedule_session_recovery(clp
->cl_session
, task
->tk_status
);
4108 task
->tk_status
= 0;
4110 #endif /* CONFIG_NFS_V4_1 */
4111 case -NFS4ERR_DELAY
:
4112 nfs_inc_server_stats(server
, NFSIOS_DELAY
);
4113 case -NFS4ERR_GRACE
:
4114 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
4115 task
->tk_status
= 0;
4117 case -NFS4ERR_RETRY_UNCACHED_REP
:
4118 case -NFS4ERR_OLD_STATEID
:
4119 task
->tk_status
= 0;
4122 task
->tk_status
= nfs4_map_errors(task
->tk_status
);
4125 task
->tk_status
= -EIO
;
4128 rpc_sleep_on(&clp
->cl_rpcwaitq
, task
, NULL
);
4129 if (test_bit(NFS4CLNT_MANAGER_RUNNING
, &clp
->cl_state
) == 0)
4130 rpc_wake_up_queued_task(&clp
->cl_rpcwaitq
, task
);
4131 task
->tk_status
= 0;
4135 static void nfs4_init_boot_verifier(const struct nfs_client
*clp
,
4136 nfs4_verifier
*bootverf
)
4140 if (test_bit(NFS4CLNT_PURGE_STATE
, &clp
->cl_state
)) {
4141 /* An impossible timestamp guarantees this value
4142 * will never match a generated boot time. */
4144 verf
[1] = (__be32
)(NSEC_PER_SEC
+ 1);
4146 struct nfs_net
*nn
= net_generic(clp
->cl_net
, nfs_net_id
);
4147 verf
[0] = (__be32
)nn
->boot_time
.tv_sec
;
4148 verf
[1] = (__be32
)nn
->boot_time
.tv_nsec
;
4150 memcpy(bootverf
->data
, verf
, sizeof(bootverf
->data
));
4154 nfs4_init_nonuniform_client_string(const struct nfs_client
*clp
,
4155 char *buf
, size_t len
)
4157 unsigned int result
;
4160 result
= scnprintf(buf
, len
, "Linux NFSv4.0 %s/%s %s",
4162 rpc_peeraddr2str(clp
->cl_rpcclient
,
4164 rpc_peeraddr2str(clp
->cl_rpcclient
,
4165 RPC_DISPLAY_PROTO
));
4171 nfs4_init_uniform_client_string(const struct nfs_client
*clp
,
4172 char *buf
, size_t len
)
4174 char *nodename
= clp
->cl_rpcclient
->cl_nodename
;
4176 if (nfs4_client_id_uniquifier
[0] != '\0')
4177 nodename
= nfs4_client_id_uniquifier
;
4178 return scnprintf(buf
, len
, "Linux NFSv%u.%u %s",
4179 clp
->rpc_ops
->version
, clp
->cl_minorversion
,
4184 * nfs4_proc_setclientid - Negotiate client ID
4185 * @clp: state data structure
4186 * @program: RPC program for NFSv4 callback service
4187 * @port: IP port number for NFS4 callback service
4188 * @cred: RPC credential to use for this call
4189 * @res: where to place the result
4191 * Returns zero, a negative errno, or a negative NFS4ERR status code.
4193 int nfs4_proc_setclientid(struct nfs_client
*clp
, u32 program
,
4194 unsigned short port
, struct rpc_cred
*cred
,
4195 struct nfs4_setclientid_res
*res
)
4197 nfs4_verifier sc_verifier
;
4198 struct nfs4_setclientid setclientid
= {
4199 .sc_verifier
= &sc_verifier
,
4201 .sc_cb_ident
= clp
->cl_cb_ident
,
4203 struct rpc_message msg
= {
4204 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETCLIENTID
],
4205 .rpc_argp
= &setclientid
,
4211 /* nfs_client_id4 */
4212 nfs4_init_boot_verifier(clp
, &sc_verifier
);
4213 if (test_bit(NFS_CS_MIGRATION
, &clp
->cl_flags
))
4214 setclientid
.sc_name_len
=
4215 nfs4_init_uniform_client_string(clp
,
4216 setclientid
.sc_name
,
4217 sizeof(setclientid
.sc_name
));
4219 setclientid
.sc_name_len
=
4220 nfs4_init_nonuniform_client_string(clp
,
4221 setclientid
.sc_name
,
4222 sizeof(setclientid
.sc_name
));
4225 setclientid
.sc_netid_len
= scnprintf(setclientid
.sc_netid
,
4226 sizeof(setclientid
.sc_netid
),
4227 rpc_peeraddr2str(clp
->cl_rpcclient
,
4228 RPC_DISPLAY_NETID
));
4230 setclientid
.sc_uaddr_len
= scnprintf(setclientid
.sc_uaddr
,
4231 sizeof(setclientid
.sc_uaddr
), "%s.%u.%u",
4232 clp
->cl_ipaddr
, port
>> 8, port
& 255);
4234 dprintk("NFS call setclientid auth=%s, '%.*s'\n",
4235 clp
->cl_rpcclient
->cl_auth
->au_ops
->au_name
,
4236 setclientid
.sc_name_len
, setclientid
.sc_name
);
4237 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
4238 dprintk("NFS reply setclientid: %d\n", status
);
4243 * nfs4_proc_setclientid_confirm - Confirm client ID
4244 * @clp: state data structure
4245 * @res: result of a previous SETCLIENTID
4246 * @cred: RPC credential to use for this call
4248 * Returns zero, a negative errno, or a negative NFS4ERR status code.
4250 int nfs4_proc_setclientid_confirm(struct nfs_client
*clp
,
4251 struct nfs4_setclientid_res
*arg
,
4252 struct rpc_cred
*cred
)
4254 struct nfs_fsinfo fsinfo
;
4255 struct rpc_message msg
= {
4256 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETCLIENTID_CONFIRM
],
4258 .rpc_resp
= &fsinfo
,
4264 dprintk("NFS call setclientid_confirm auth=%s, (client ID %llx)\n",
4265 clp
->cl_rpcclient
->cl_auth
->au_ops
->au_name
,
4268 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
4270 spin_lock(&clp
->cl_lock
);
4271 clp
->cl_lease_time
= fsinfo
.lease_time
* HZ
;
4272 clp
->cl_last_renewal
= now
;
4273 spin_unlock(&clp
->cl_lock
);
4275 dprintk("NFS reply setclientid_confirm: %d\n", status
);
4279 struct nfs4_delegreturndata
{
4280 struct nfs4_delegreturnargs args
;
4281 struct nfs4_delegreturnres res
;
4283 nfs4_stateid stateid
;
4284 unsigned long timestamp
;
4285 struct nfs_fattr fattr
;
4289 static void nfs4_delegreturn_done(struct rpc_task
*task
, void *calldata
)
4291 struct nfs4_delegreturndata
*data
= calldata
;
4293 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
4296 switch (task
->tk_status
) {
4297 case -NFS4ERR_STALE_STATEID
:
4298 case -NFS4ERR_EXPIRED
:
4300 renew_lease(data
->res
.server
, data
->timestamp
);
4303 if (nfs4_async_handle_error(task
, data
->res
.server
, NULL
) ==
4305 rpc_restart_call_prepare(task
);
4309 data
->rpc_status
= task
->tk_status
;
4312 static void nfs4_delegreturn_release(void *calldata
)
4317 #if defined(CONFIG_NFS_V4_1)
4318 static void nfs4_delegreturn_prepare(struct rpc_task
*task
, void *data
)
4320 struct nfs4_delegreturndata
*d_data
;
4322 d_data
= (struct nfs4_delegreturndata
*)data
;
4324 nfs4_setup_sequence(d_data
->res
.server
,
4325 &d_data
->args
.seq_args
,
4326 &d_data
->res
.seq_res
,
4329 #endif /* CONFIG_NFS_V4_1 */
4331 static const struct rpc_call_ops nfs4_delegreturn_ops
= {
4332 #if defined(CONFIG_NFS_V4_1)
4333 .rpc_call_prepare
= nfs4_delegreturn_prepare
,
4334 #endif /* CONFIG_NFS_V4_1 */
4335 .rpc_call_done
= nfs4_delegreturn_done
,
4336 .rpc_release
= nfs4_delegreturn_release
,
4339 static int _nfs4_proc_delegreturn(struct inode
*inode
, struct rpc_cred
*cred
, const nfs4_stateid
*stateid
, int issync
)
4341 struct nfs4_delegreturndata
*data
;
4342 struct nfs_server
*server
= NFS_SERVER(inode
);
4343 struct rpc_task
*task
;
4344 struct rpc_message msg
= {
4345 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DELEGRETURN
],
4348 struct rpc_task_setup task_setup_data
= {
4349 .rpc_client
= server
->client
,
4350 .rpc_message
= &msg
,
4351 .callback_ops
= &nfs4_delegreturn_ops
,
4352 .flags
= RPC_TASK_ASYNC
,
4356 data
= kzalloc(sizeof(*data
), GFP_NOFS
);
4359 nfs41_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
4360 data
->args
.fhandle
= &data
->fh
;
4361 data
->args
.stateid
= &data
->stateid
;
4362 data
->args
.bitmask
= server
->cache_consistency_bitmask
;
4363 nfs_copy_fh(&data
->fh
, NFS_FH(inode
));
4364 nfs4_stateid_copy(&data
->stateid
, stateid
);
4365 data
->res
.fattr
= &data
->fattr
;
4366 data
->res
.server
= server
;
4367 nfs_fattr_init(data
->res
.fattr
);
4368 data
->timestamp
= jiffies
;
4369 data
->rpc_status
= 0;
4371 task_setup_data
.callback_data
= data
;
4372 msg
.rpc_argp
= &data
->args
;
4373 msg
.rpc_resp
= &data
->res
;
4374 task
= rpc_run_task(&task_setup_data
);
4376 return PTR_ERR(task
);
4379 status
= nfs4_wait_for_completion_rpc_task(task
);
4382 status
= data
->rpc_status
;
4384 nfs_post_op_update_inode_force_wcc(inode
, &data
->fattr
);
4386 nfs_refresh_inode(inode
, &data
->fattr
);
4392 int nfs4_proc_delegreturn(struct inode
*inode
, struct rpc_cred
*cred
, const nfs4_stateid
*stateid
, int issync
)
4394 struct nfs_server
*server
= NFS_SERVER(inode
);
4395 struct nfs4_exception exception
= { };
4398 err
= _nfs4_proc_delegreturn(inode
, cred
, stateid
, issync
);
4400 case -NFS4ERR_STALE_STATEID
:
4401 case -NFS4ERR_EXPIRED
:
4405 err
= nfs4_handle_exception(server
, err
, &exception
);
4406 } while (exception
.retry
);
4410 #define NFS4_LOCK_MINTIMEOUT (1 * HZ)
4411 #define NFS4_LOCK_MAXTIMEOUT (30 * HZ)
4414 * sleep, with exponential backoff, and retry the LOCK operation.
4416 static unsigned long
4417 nfs4_set_lock_task_retry(unsigned long timeout
)
4419 freezable_schedule_timeout_killable(timeout
);
4421 if (timeout
> NFS4_LOCK_MAXTIMEOUT
)
4422 return NFS4_LOCK_MAXTIMEOUT
;
4426 static int _nfs4_proc_getlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
4428 struct inode
*inode
= state
->inode
;
4429 struct nfs_server
*server
= NFS_SERVER(inode
);
4430 struct nfs_client
*clp
= server
->nfs_client
;
4431 struct nfs_lockt_args arg
= {
4432 .fh
= NFS_FH(inode
),
4435 struct nfs_lockt_res res
= {
4438 struct rpc_message msg
= {
4439 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCKT
],
4442 .rpc_cred
= state
->owner
->so_cred
,
4444 struct nfs4_lock_state
*lsp
;
4447 arg
.lock_owner
.clientid
= clp
->cl_clientid
;
4448 status
= nfs4_set_lock_state(state
, request
);
4451 lsp
= request
->fl_u
.nfs4_fl
.owner
;
4452 arg
.lock_owner
.id
= lsp
->ls_seqid
.owner_id
;
4453 arg
.lock_owner
.s_dev
= server
->s_dev
;
4454 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
4457 request
->fl_type
= F_UNLCK
;
4459 case -NFS4ERR_DENIED
:
4462 request
->fl_ops
->fl_release_private(request
);
4467 static int nfs4_proc_getlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
4469 struct nfs4_exception exception
= { };
4473 err
= nfs4_handle_exception(NFS_SERVER(state
->inode
),
4474 _nfs4_proc_getlk(state
, cmd
, request
),
4476 } while (exception
.retry
);
4480 static int do_vfs_lock(struct file
*file
, struct file_lock
*fl
)
4483 switch (fl
->fl_flags
& (FL_POSIX
|FL_FLOCK
)) {
4485 res
= posix_lock_file_wait(file
, fl
);
4488 res
= flock_lock_file_wait(file
, fl
);
4496 struct nfs4_unlockdata
{
4497 struct nfs_locku_args arg
;
4498 struct nfs_locku_res res
;
4499 struct nfs4_lock_state
*lsp
;
4500 struct nfs_open_context
*ctx
;
4501 struct file_lock fl
;
4502 const struct nfs_server
*server
;
4503 unsigned long timestamp
;
4506 static struct nfs4_unlockdata
*nfs4_alloc_unlockdata(struct file_lock
*fl
,
4507 struct nfs_open_context
*ctx
,
4508 struct nfs4_lock_state
*lsp
,
4509 struct nfs_seqid
*seqid
)
4511 struct nfs4_unlockdata
*p
;
4512 struct inode
*inode
= lsp
->ls_state
->inode
;
4514 p
= kzalloc(sizeof(*p
), GFP_NOFS
);
4517 p
->arg
.fh
= NFS_FH(inode
);
4519 p
->arg
.seqid
= seqid
;
4520 p
->res
.seqid
= seqid
;
4521 p
->arg
.stateid
= &lsp
->ls_stateid
;
4523 atomic_inc(&lsp
->ls_count
);
4524 /* Ensure we don't close file until we're done freeing locks! */
4525 p
->ctx
= get_nfs_open_context(ctx
);
4526 memcpy(&p
->fl
, fl
, sizeof(p
->fl
));
4527 p
->server
= NFS_SERVER(inode
);
4531 static void nfs4_locku_release_calldata(void *data
)
4533 struct nfs4_unlockdata
*calldata
= data
;
4534 nfs_free_seqid(calldata
->arg
.seqid
);
4535 nfs4_put_lock_state(calldata
->lsp
);
4536 put_nfs_open_context(calldata
->ctx
);
4540 static void nfs4_locku_done(struct rpc_task
*task
, void *data
)
4542 struct nfs4_unlockdata
*calldata
= data
;
4544 if (!nfs4_sequence_done(task
, &calldata
->res
.seq_res
))
4546 switch (task
->tk_status
) {
4548 nfs4_stateid_copy(&calldata
->lsp
->ls_stateid
,
4549 &calldata
->res
.stateid
);
4550 renew_lease(calldata
->server
, calldata
->timestamp
);
4552 case -NFS4ERR_BAD_STATEID
:
4553 case -NFS4ERR_OLD_STATEID
:
4554 case -NFS4ERR_STALE_STATEID
:
4555 case -NFS4ERR_EXPIRED
:
4558 if (nfs4_async_handle_error(task
, calldata
->server
, NULL
) == -EAGAIN
)
4559 rpc_restart_call_prepare(task
);
4561 nfs_release_seqid(calldata
->arg
.seqid
);
4564 static void nfs4_locku_prepare(struct rpc_task
*task
, void *data
)
4566 struct nfs4_unlockdata
*calldata
= data
;
4568 if (nfs_wait_on_sequence(calldata
->arg
.seqid
, task
) != 0)
4570 if (test_bit(NFS_LOCK_INITIALIZED
, &calldata
->lsp
->ls_flags
) == 0) {
4571 /* Note: exit _without_ running nfs4_locku_done */
4574 calldata
->timestamp
= jiffies
;
4575 if (nfs4_setup_sequence(calldata
->server
,
4576 &calldata
->arg
.seq_args
,
4577 &calldata
->res
.seq_res
,
4579 nfs_release_seqid(calldata
->arg
.seqid
);
4582 task
->tk_action
= NULL
;
4584 nfs4_sequence_done(task
, &calldata
->res
.seq_res
);
4587 static const struct rpc_call_ops nfs4_locku_ops
= {
4588 .rpc_call_prepare
= nfs4_locku_prepare
,
4589 .rpc_call_done
= nfs4_locku_done
,
4590 .rpc_release
= nfs4_locku_release_calldata
,
4593 static struct rpc_task
*nfs4_do_unlck(struct file_lock
*fl
,
4594 struct nfs_open_context
*ctx
,
4595 struct nfs4_lock_state
*lsp
,
4596 struct nfs_seqid
*seqid
)
4598 struct nfs4_unlockdata
*data
;
4599 struct rpc_message msg
= {
4600 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCKU
],
4601 .rpc_cred
= ctx
->cred
,
4603 struct rpc_task_setup task_setup_data
= {
4604 .rpc_client
= NFS_CLIENT(lsp
->ls_state
->inode
),
4605 .rpc_message
= &msg
,
4606 .callback_ops
= &nfs4_locku_ops
,
4607 .workqueue
= nfsiod_workqueue
,
4608 .flags
= RPC_TASK_ASYNC
,
4611 /* Ensure this is an unlock - when canceling a lock, the
4612 * canceled lock is passed in, and it won't be an unlock.
4614 fl
->fl_type
= F_UNLCK
;
4616 data
= nfs4_alloc_unlockdata(fl
, ctx
, lsp
, seqid
);
4618 nfs_free_seqid(seqid
);
4619 return ERR_PTR(-ENOMEM
);
4622 nfs41_init_sequence(&data
->arg
.seq_args
, &data
->res
.seq_res
, 1);
4623 msg
.rpc_argp
= &data
->arg
;
4624 msg
.rpc_resp
= &data
->res
;
4625 task_setup_data
.callback_data
= data
;
4626 return rpc_run_task(&task_setup_data
);
4629 static int nfs4_proc_unlck(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
4631 struct inode
*inode
= state
->inode
;
4632 struct nfs4_state_owner
*sp
= state
->owner
;
4633 struct nfs_inode
*nfsi
= NFS_I(inode
);
4634 struct nfs_seqid
*seqid
;
4635 struct nfs4_lock_state
*lsp
;
4636 struct rpc_task
*task
;
4638 unsigned char fl_flags
= request
->fl_flags
;
4640 status
= nfs4_set_lock_state(state
, request
);
4641 /* Unlock _before_ we do the RPC call */
4642 request
->fl_flags
|= FL_EXISTS
;
4643 /* Exclude nfs_delegation_claim_locks() */
4644 mutex_lock(&sp
->so_delegreturn_mutex
);
4645 /* Exclude nfs4_reclaim_open_stateid() - note nesting! */
4646 down_read(&nfsi
->rwsem
);
4647 if (do_vfs_lock(request
->fl_file
, request
) == -ENOENT
) {
4648 up_read(&nfsi
->rwsem
);
4649 mutex_unlock(&sp
->so_delegreturn_mutex
);
4652 up_read(&nfsi
->rwsem
);
4653 mutex_unlock(&sp
->so_delegreturn_mutex
);
4656 /* Is this a delegated lock? */
4657 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
))
4659 lsp
= request
->fl_u
.nfs4_fl
.owner
;
4660 seqid
= nfs_alloc_seqid(&lsp
->ls_seqid
, GFP_KERNEL
);
4664 task
= nfs4_do_unlck(request
, nfs_file_open_context(request
->fl_file
), lsp
, seqid
);
4665 status
= PTR_ERR(task
);
4668 status
= nfs4_wait_for_completion_rpc_task(task
);
4671 request
->fl_flags
= fl_flags
;
4675 struct nfs4_lockdata
{
4676 struct nfs_lock_args arg
;
4677 struct nfs_lock_res res
;
4678 struct nfs4_lock_state
*lsp
;
4679 struct nfs_open_context
*ctx
;
4680 struct file_lock fl
;
4681 unsigned long timestamp
;
4684 struct nfs_server
*server
;
4687 static struct nfs4_lockdata
*nfs4_alloc_lockdata(struct file_lock
*fl
,
4688 struct nfs_open_context
*ctx
, struct nfs4_lock_state
*lsp
,
4691 struct nfs4_lockdata
*p
;
4692 struct inode
*inode
= lsp
->ls_state
->inode
;
4693 struct nfs_server
*server
= NFS_SERVER(inode
);
4695 p
= kzalloc(sizeof(*p
), gfp_mask
);
4699 p
->arg
.fh
= NFS_FH(inode
);
4701 p
->arg
.open_seqid
= nfs_alloc_seqid(&lsp
->ls_state
->owner
->so_seqid
, gfp_mask
);
4702 if (p
->arg
.open_seqid
== NULL
)
4704 p
->arg
.lock_seqid
= nfs_alloc_seqid(&lsp
->ls_seqid
, gfp_mask
);
4705 if (p
->arg
.lock_seqid
== NULL
)
4706 goto out_free_seqid
;
4707 p
->arg
.lock_stateid
= &lsp
->ls_stateid
;
4708 p
->arg
.lock_owner
.clientid
= server
->nfs_client
->cl_clientid
;
4709 p
->arg
.lock_owner
.id
= lsp
->ls_seqid
.owner_id
;
4710 p
->arg
.lock_owner
.s_dev
= server
->s_dev
;
4711 p
->res
.lock_seqid
= p
->arg
.lock_seqid
;
4714 atomic_inc(&lsp
->ls_count
);
4715 p
->ctx
= get_nfs_open_context(ctx
);
4716 memcpy(&p
->fl
, fl
, sizeof(p
->fl
));
4719 nfs_free_seqid(p
->arg
.open_seqid
);
4725 static void nfs4_lock_prepare(struct rpc_task
*task
, void *calldata
)
4727 struct nfs4_lockdata
*data
= calldata
;
4728 struct nfs4_state
*state
= data
->lsp
->ls_state
;
4730 dprintk("%s: begin!\n", __func__
);
4731 if (nfs_wait_on_sequence(data
->arg
.lock_seqid
, task
) != 0)
4733 /* Do we need to do an open_to_lock_owner? */
4734 if (!(data
->arg
.lock_seqid
->sequence
->flags
& NFS_SEQID_CONFIRMED
)) {
4735 if (nfs_wait_on_sequence(data
->arg
.open_seqid
, task
) != 0) {
4736 goto out_release_lock_seqid
;
4738 data
->arg
.open_stateid
= &state
->stateid
;
4739 data
->arg
.new_lock_owner
= 1;
4740 data
->res
.open_seqid
= data
->arg
.open_seqid
;
4742 data
->arg
.new_lock_owner
= 0;
4743 if (!nfs4_valid_open_stateid(state
)) {
4744 data
->rpc_status
= -EBADF
;
4745 task
->tk_action
= NULL
;
4746 goto out_release_open_seqid
;
4748 data
->timestamp
= jiffies
;
4749 if (nfs4_setup_sequence(data
->server
,
4750 &data
->arg
.seq_args
,
4754 out_release_open_seqid
:
4755 nfs_release_seqid(data
->arg
.open_seqid
);
4756 out_release_lock_seqid
:
4757 nfs_release_seqid(data
->arg
.lock_seqid
);
4759 nfs4_sequence_done(task
, &data
->res
.seq_res
);
4760 dprintk("%s: done!, ret = %d\n", __func__
, data
->rpc_status
);
4763 static void nfs4_lock_done(struct rpc_task
*task
, void *calldata
)
4765 struct nfs4_lockdata
*data
= calldata
;
4767 dprintk("%s: begin!\n", __func__
);
4769 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
4772 data
->rpc_status
= task
->tk_status
;
4773 if (data
->arg
.new_lock_owner
!= 0) {
4774 if (data
->rpc_status
== 0)
4775 nfs_confirm_seqid(&data
->lsp
->ls_seqid
, 0);
4779 if (data
->rpc_status
== 0) {
4780 nfs4_stateid_copy(&data
->lsp
->ls_stateid
, &data
->res
.stateid
);
4781 set_bit(NFS_LOCK_INITIALIZED
, &data
->lsp
->ls_flags
);
4782 renew_lease(NFS_SERVER(data
->ctx
->dentry
->d_inode
), data
->timestamp
);
4785 dprintk("%s: done, ret = %d!\n", __func__
, data
->rpc_status
);
4788 static void nfs4_lock_release(void *calldata
)
4790 struct nfs4_lockdata
*data
= calldata
;
4792 dprintk("%s: begin!\n", __func__
);
4793 nfs_free_seqid(data
->arg
.open_seqid
);
4794 if (data
->cancelled
!= 0) {
4795 struct rpc_task
*task
;
4796 task
= nfs4_do_unlck(&data
->fl
, data
->ctx
, data
->lsp
,
4797 data
->arg
.lock_seqid
);
4799 rpc_put_task_async(task
);
4800 dprintk("%s: cancelling lock!\n", __func__
);
4802 nfs_free_seqid(data
->arg
.lock_seqid
);
4803 nfs4_put_lock_state(data
->lsp
);
4804 put_nfs_open_context(data
->ctx
);
4806 dprintk("%s: done!\n", __func__
);
4809 static const struct rpc_call_ops nfs4_lock_ops
= {
4810 .rpc_call_prepare
= nfs4_lock_prepare
,
4811 .rpc_call_done
= nfs4_lock_done
,
4812 .rpc_release
= nfs4_lock_release
,
4815 static void nfs4_handle_setlk_error(struct nfs_server
*server
, struct nfs4_lock_state
*lsp
, int new_lock_owner
, int error
)
4818 case -NFS4ERR_ADMIN_REVOKED
:
4819 case -NFS4ERR_BAD_STATEID
:
4820 lsp
->ls_seqid
.flags
&= ~NFS_SEQID_CONFIRMED
;
4821 if (new_lock_owner
!= 0 ||
4822 test_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
) != 0)
4823 nfs4_schedule_stateid_recovery(server
, lsp
->ls_state
);
4825 case -NFS4ERR_STALE_STATEID
:
4826 lsp
->ls_seqid
.flags
&= ~NFS_SEQID_CONFIRMED
;
4827 case -NFS4ERR_EXPIRED
:
4828 nfs4_schedule_lease_recovery(server
->nfs_client
);
4832 static int _nfs4_do_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*fl
, int recovery_type
)
4834 struct nfs4_lockdata
*data
;
4835 struct rpc_task
*task
;
4836 struct rpc_message msg
= {
4837 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCK
],
4838 .rpc_cred
= state
->owner
->so_cred
,
4840 struct rpc_task_setup task_setup_data
= {
4841 .rpc_client
= NFS_CLIENT(state
->inode
),
4842 .rpc_message
= &msg
,
4843 .callback_ops
= &nfs4_lock_ops
,
4844 .workqueue
= nfsiod_workqueue
,
4845 .flags
= RPC_TASK_ASYNC
,
4849 dprintk("%s: begin!\n", __func__
);
4850 data
= nfs4_alloc_lockdata(fl
, nfs_file_open_context(fl
->fl_file
),
4851 fl
->fl_u
.nfs4_fl
.owner
,
4852 recovery_type
== NFS_LOCK_NEW
? GFP_KERNEL
: GFP_NOFS
);
4856 data
->arg
.block
= 1;
4857 nfs41_init_sequence(&data
->arg
.seq_args
, &data
->res
.seq_res
, 1);
4858 msg
.rpc_argp
= &data
->arg
;
4859 msg
.rpc_resp
= &data
->res
;
4860 task_setup_data
.callback_data
= data
;
4861 if (recovery_type
> NFS_LOCK_NEW
) {
4862 if (recovery_type
== NFS_LOCK_RECLAIM
)
4863 data
->arg
.reclaim
= NFS_LOCK_RECLAIM
;
4864 nfs4_set_sequence_privileged(&data
->arg
.seq_args
);
4866 task
= rpc_run_task(&task_setup_data
);
4868 return PTR_ERR(task
);
4869 ret
= nfs4_wait_for_completion_rpc_task(task
);
4871 ret
= data
->rpc_status
;
4873 nfs4_handle_setlk_error(data
->server
, data
->lsp
,
4874 data
->arg
.new_lock_owner
, ret
);
4876 data
->cancelled
= 1;
4878 dprintk("%s: done, ret = %d!\n", __func__
, ret
);
4882 static int nfs4_lock_reclaim(struct nfs4_state
*state
, struct file_lock
*request
)
4884 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
4885 struct nfs4_exception exception
= {
4886 .inode
= state
->inode
,
4891 /* Cache the lock if possible... */
4892 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) != 0)
4894 err
= _nfs4_do_setlk(state
, F_SETLK
, request
, NFS_LOCK_RECLAIM
);
4895 if (err
!= -NFS4ERR_DELAY
)
4897 nfs4_handle_exception(server
, err
, &exception
);
4898 } while (exception
.retry
);
4902 static int nfs4_lock_expired(struct nfs4_state
*state
, struct file_lock
*request
)
4904 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
4905 struct nfs4_exception exception
= {
4906 .inode
= state
->inode
,
4910 err
= nfs4_set_lock_state(state
, request
);
4914 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) != 0)
4916 err
= _nfs4_do_setlk(state
, F_SETLK
, request
, NFS_LOCK_EXPIRED
);
4920 case -NFS4ERR_GRACE
:
4921 case -NFS4ERR_DELAY
:
4922 nfs4_handle_exception(server
, err
, &exception
);
4925 } while (exception
.retry
);
4930 #if defined(CONFIG_NFS_V4_1)
4932 * nfs41_check_expired_locks - possibly free a lock stateid
4934 * @state: NFSv4 state for an inode
4936 * Returns NFS_OK if recovery for this stateid is now finished.
4937 * Otherwise a negative NFS4ERR value is returned.
4939 static int nfs41_check_expired_locks(struct nfs4_state
*state
)
4941 int status
, ret
= -NFS4ERR_BAD_STATEID
;
4942 struct nfs4_lock_state
*lsp
;
4943 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
4945 list_for_each_entry(lsp
, &state
->lock_states
, ls_locks
) {
4946 if (test_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
)) {
4947 status
= nfs41_test_stateid(server
, &lsp
->ls_stateid
);
4948 if (status
!= NFS_OK
) {
4949 /* Free the stateid unless the server
4950 * informs us the stateid is unrecognized. */
4951 if (status
!= -NFS4ERR_BAD_STATEID
)
4952 nfs41_free_stateid(server
,
4954 clear_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
);
4963 static int nfs41_lock_expired(struct nfs4_state
*state
, struct file_lock
*request
)
4965 int status
= NFS_OK
;
4967 if (test_bit(LK_STATE_IN_USE
, &state
->flags
))
4968 status
= nfs41_check_expired_locks(state
);
4969 if (status
!= NFS_OK
)
4970 status
= nfs4_lock_expired(state
, request
);
4975 static int _nfs4_proc_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
4977 struct nfs4_state_owner
*sp
= state
->owner
;
4978 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
4979 unsigned char fl_flags
= request
->fl_flags
;
4981 int status
= -ENOLCK
;
4983 if ((fl_flags
& FL_POSIX
) &&
4984 !test_bit(NFS_STATE_POSIX_LOCKS
, &state
->flags
))
4986 /* Is this a delegated open? */
4987 status
= nfs4_set_lock_state(state
, request
);
4990 request
->fl_flags
|= FL_ACCESS
;
4991 status
= do_vfs_lock(request
->fl_file
, request
);
4994 down_read(&nfsi
->rwsem
);
4995 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
)) {
4996 /* Yes: cache locks! */
4997 /* ...but avoid races with delegation recall... */
4998 request
->fl_flags
= fl_flags
& ~FL_SLEEP
;
4999 status
= do_vfs_lock(request
->fl_file
, request
);
5002 seq
= raw_seqcount_begin(&sp
->so_reclaim_seqcount
);
5003 up_read(&nfsi
->rwsem
);
5004 status
= _nfs4_do_setlk(state
, cmd
, request
, NFS_LOCK_NEW
);
5007 down_read(&nfsi
->rwsem
);
5008 if (read_seqcount_retry(&sp
->so_reclaim_seqcount
, seq
)) {
5009 status
= -NFS4ERR_DELAY
;
5012 /* Note: we always want to sleep here! */
5013 request
->fl_flags
= fl_flags
| FL_SLEEP
;
5014 if (do_vfs_lock(request
->fl_file
, request
) < 0)
5015 printk(KERN_WARNING
"NFS: %s: VFS is out of sync with lock "
5016 "manager!\n", __func__
);
5018 up_read(&nfsi
->rwsem
);
5020 request
->fl_flags
= fl_flags
;
5024 static int nfs4_proc_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
5026 struct nfs4_exception exception
= {
5028 .inode
= state
->inode
,
5033 err
= _nfs4_proc_setlk(state
, cmd
, request
);
5034 if (err
== -NFS4ERR_DENIED
)
5036 err
= nfs4_handle_exception(NFS_SERVER(state
->inode
),
5038 } while (exception
.retry
);
5043 nfs4_proc_lock(struct file
*filp
, int cmd
, struct file_lock
*request
)
5045 struct nfs_open_context
*ctx
;
5046 struct nfs4_state
*state
;
5047 unsigned long timeout
= NFS4_LOCK_MINTIMEOUT
;
5050 /* verify open state */
5051 ctx
= nfs_file_open_context(filp
);
5054 if (request
->fl_start
< 0 || request
->fl_end
< 0)
5057 if (IS_GETLK(cmd
)) {
5059 return nfs4_proc_getlk(state
, F_GETLK
, request
);
5063 if (!(IS_SETLK(cmd
) || IS_SETLKW(cmd
)))
5066 if (request
->fl_type
== F_UNLCK
) {
5068 return nfs4_proc_unlck(state
, cmd
, request
);
5075 * Don't rely on the VFS having checked the file open mode,
5076 * since it won't do this for flock() locks.
5078 switch (request
->fl_type
) {
5080 if (!(filp
->f_mode
& FMODE_READ
))
5084 if (!(filp
->f_mode
& FMODE_WRITE
))
5089 status
= nfs4_proc_setlk(state
, cmd
, request
);
5090 if ((status
!= -EAGAIN
) || IS_SETLK(cmd
))
5092 timeout
= nfs4_set_lock_task_retry(timeout
);
5093 status
= -ERESTARTSYS
;
5096 } while(status
< 0);
5100 int nfs4_lock_delegation_recall(struct nfs4_state
*state
, struct file_lock
*fl
)
5102 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
5103 struct nfs4_exception exception
= { };
5106 err
= nfs4_set_lock_state(state
, fl
);
5110 err
= _nfs4_do_setlk(state
, F_SETLK
, fl
, NFS_LOCK_NEW
);
5113 printk(KERN_ERR
"NFS: %s: unhandled error "
5114 "%d.\n", __func__
, err
);
5118 case -NFS4ERR_STALE_CLIENTID
:
5119 case -NFS4ERR_STALE_STATEID
:
5120 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
5121 case -NFS4ERR_EXPIRED
:
5122 nfs4_schedule_lease_recovery(server
->nfs_client
);
5125 case -NFS4ERR_BADSESSION
:
5126 case -NFS4ERR_BADSLOT
:
5127 case -NFS4ERR_BAD_HIGH_SLOT
:
5128 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
5129 case -NFS4ERR_DEADSESSION
:
5130 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
5131 nfs4_schedule_session_recovery(server
->nfs_client
->cl_session
, err
);
5134 case -NFS4ERR_DELEG_REVOKED
:
5135 case -NFS4ERR_ADMIN_REVOKED
:
5136 case -NFS4ERR_BAD_STATEID
:
5137 case -NFS4ERR_OPENMODE
:
5138 nfs4_schedule_stateid_recovery(server
, state
);
5142 case -NFS4ERR_DENIED
:
5143 /* kill_proc(fl->fl_pid, SIGLOST, 1); */
5147 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
5148 err
= nfs4_handle_exception(server
, err
, &exception
);
5149 } while (exception
.retry
);
5154 struct nfs_release_lockowner_data
{
5155 struct nfs4_lock_state
*lsp
;
5156 struct nfs_server
*server
;
5157 struct nfs_release_lockowner_args args
;
5160 static void nfs4_release_lockowner_release(void *calldata
)
5162 struct nfs_release_lockowner_data
*data
= calldata
;
5163 nfs4_free_lock_state(data
->server
, data
->lsp
);
5167 static const struct rpc_call_ops nfs4_release_lockowner_ops
= {
5168 .rpc_release
= nfs4_release_lockowner_release
,
5171 int nfs4_release_lockowner(struct nfs4_lock_state
*lsp
)
5173 struct nfs_server
*server
= lsp
->ls_state
->owner
->so_server
;
5174 struct nfs_release_lockowner_data
*data
;
5175 struct rpc_message msg
= {
5176 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RELEASE_LOCKOWNER
],
5179 if (server
->nfs_client
->cl_mvops
->minor_version
!= 0)
5181 data
= kmalloc(sizeof(*data
), GFP_NOFS
);
5185 data
->server
= server
;
5186 data
->args
.lock_owner
.clientid
= server
->nfs_client
->cl_clientid
;
5187 data
->args
.lock_owner
.id
= lsp
->ls_seqid
.owner_id
;
5188 data
->args
.lock_owner
.s_dev
= server
->s_dev
;
5189 msg
.rpc_argp
= &data
->args
;
5190 rpc_call_async(server
->client
, &msg
, 0, &nfs4_release_lockowner_ops
, data
);
5194 #define XATTR_NAME_NFSV4_ACL "system.nfs4_acl"
5196 static int nfs4_xattr_set_nfs4_acl(struct dentry
*dentry
, const char *key
,
5197 const void *buf
, size_t buflen
,
5198 int flags
, int type
)
5200 if (strcmp(key
, "") != 0)
5203 return nfs4_proc_set_acl(dentry
->d_inode
, buf
, buflen
);
5206 static int nfs4_xattr_get_nfs4_acl(struct dentry
*dentry
, const char *key
,
5207 void *buf
, size_t buflen
, int type
)
5209 if (strcmp(key
, "") != 0)
5212 return nfs4_proc_get_acl(dentry
->d_inode
, buf
, buflen
);
5215 static size_t nfs4_xattr_list_nfs4_acl(struct dentry
*dentry
, char *list
,
5216 size_t list_len
, const char *name
,
5217 size_t name_len
, int type
)
5219 size_t len
= sizeof(XATTR_NAME_NFSV4_ACL
);
5221 if (!nfs4_server_supports_acls(NFS_SERVER(dentry
->d_inode
)))
5224 if (list
&& len
<= list_len
)
5225 memcpy(list
, XATTR_NAME_NFSV4_ACL
, len
);
5230 * nfs_fhget will use either the mounted_on_fileid or the fileid
5232 static void nfs_fixup_referral_attributes(struct nfs_fattr
*fattr
)
5234 if (!(((fattr
->valid
& NFS_ATTR_FATTR_MOUNTED_ON_FILEID
) ||
5235 (fattr
->valid
& NFS_ATTR_FATTR_FILEID
)) &&
5236 (fattr
->valid
& NFS_ATTR_FATTR_FSID
) &&
5237 (fattr
->valid
& NFS_ATTR_FATTR_V4_LOCATIONS
)))
5240 fattr
->valid
|= NFS_ATTR_FATTR_TYPE
| NFS_ATTR_FATTR_MODE
|
5241 NFS_ATTR_FATTR_NLINK
| NFS_ATTR_FATTR_V4_REFERRAL
;
5242 fattr
->mode
= S_IFDIR
| S_IRUGO
| S_IXUGO
;
5246 static int _nfs4_proc_fs_locations(struct rpc_clnt
*client
, struct inode
*dir
,
5247 const struct qstr
*name
,
5248 struct nfs4_fs_locations
*fs_locations
,
5251 struct nfs_server
*server
= NFS_SERVER(dir
);
5253 [0] = FATTR4_WORD0_FSID
| FATTR4_WORD0_FS_LOCATIONS
,
5255 struct nfs4_fs_locations_arg args
= {
5256 .dir_fh
= NFS_FH(dir
),
5261 struct nfs4_fs_locations_res res
= {
5262 .fs_locations
= fs_locations
,
5264 struct rpc_message msg
= {
5265 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FS_LOCATIONS
],
5271 dprintk("%s: start\n", __func__
);
5273 /* Ask for the fileid of the absent filesystem if mounted_on_fileid
5274 * is not supported */
5275 if (NFS_SERVER(dir
)->attr_bitmask
[1] & FATTR4_WORD1_MOUNTED_ON_FILEID
)
5276 bitmask
[1] |= FATTR4_WORD1_MOUNTED_ON_FILEID
;
5278 bitmask
[0] |= FATTR4_WORD0_FILEID
;
5280 nfs_fattr_init(&fs_locations
->fattr
);
5281 fs_locations
->server
= server
;
5282 fs_locations
->nlocations
= 0;
5283 status
= nfs4_call_sync(client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
5284 dprintk("%s: returned status = %d\n", __func__
, status
);
5288 int nfs4_proc_fs_locations(struct rpc_clnt
*client
, struct inode
*dir
,
5289 const struct qstr
*name
,
5290 struct nfs4_fs_locations
*fs_locations
,
5293 struct nfs4_exception exception
= { };
5296 err
= nfs4_handle_exception(NFS_SERVER(dir
),
5297 _nfs4_proc_fs_locations(client
, dir
, name
, fs_locations
, page
),
5299 } while (exception
.retry
);
5303 static int _nfs4_proc_secinfo(struct inode
*dir
, const struct qstr
*name
, struct nfs4_secinfo_flavors
*flavors
)
5306 struct nfs4_secinfo_arg args
= {
5307 .dir_fh
= NFS_FH(dir
),
5310 struct nfs4_secinfo_res res
= {
5313 struct rpc_message msg
= {
5314 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SECINFO
],
5319 dprintk("NFS call secinfo %s\n", name
->name
);
5320 status
= nfs4_call_sync(NFS_SERVER(dir
)->client
, NFS_SERVER(dir
), &msg
, &args
.seq_args
, &res
.seq_res
, 0);
5321 dprintk("NFS reply secinfo: %d\n", status
);
5325 int nfs4_proc_secinfo(struct inode
*dir
, const struct qstr
*name
,
5326 struct nfs4_secinfo_flavors
*flavors
)
5328 struct nfs4_exception exception
= { };
5331 err
= nfs4_handle_exception(NFS_SERVER(dir
),
5332 _nfs4_proc_secinfo(dir
, name
, flavors
),
5334 } while (exception
.retry
);
5338 #ifdef CONFIG_NFS_V4_1
5340 * Check the exchange flags returned by the server for invalid flags, having
5341 * both PNFS and NON_PNFS flags set, and not having one of NON_PNFS, PNFS, or
5344 static int nfs4_check_cl_exchange_flags(u32 flags
)
5346 if (flags
& ~EXCHGID4_FLAG_MASK_R
)
5348 if ((flags
& EXCHGID4_FLAG_USE_PNFS_MDS
) &&
5349 (flags
& EXCHGID4_FLAG_USE_NON_PNFS
))
5351 if (!(flags
& (EXCHGID4_FLAG_MASK_PNFS
)))
5355 return -NFS4ERR_INVAL
;
5359 nfs41_same_server_scope(struct nfs41_server_scope
*a
,
5360 struct nfs41_server_scope
*b
)
5362 if (a
->server_scope_sz
== b
->server_scope_sz
&&
5363 memcmp(a
->server_scope
, b
->server_scope
, a
->server_scope_sz
) == 0)
5370 * nfs4_proc_bind_conn_to_session()
5372 * The 4.1 client currently uses the same TCP connection for the
5373 * fore and backchannel.
5375 int nfs4_proc_bind_conn_to_session(struct nfs_client
*clp
, struct rpc_cred
*cred
)
5378 struct nfs41_bind_conn_to_session_res res
;
5379 struct rpc_message msg
= {
5381 &nfs4_procedures
[NFSPROC4_CLNT_BIND_CONN_TO_SESSION
],
5387 dprintk("--> %s\n", __func__
);
5389 res
.session
= kzalloc(sizeof(struct nfs4_session
), GFP_NOFS
);
5390 if (unlikely(res
.session
== NULL
)) {
5395 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
5397 if (memcmp(res
.session
->sess_id
.data
,
5398 clp
->cl_session
->sess_id
.data
, NFS4_MAX_SESSIONID_LEN
)) {
5399 dprintk("NFS: %s: Session ID mismatch\n", __func__
);
5403 if (res
.dir
!= NFS4_CDFS4_BOTH
) {
5404 dprintk("NFS: %s: Unexpected direction from server\n",
5409 if (res
.use_conn_in_rdma_mode
) {
5410 dprintk("NFS: %s: Server returned RDMA mode = true\n",
5419 dprintk("<-- %s status= %d\n", __func__
, status
);
5424 * nfs4_proc_exchange_id()
5426 * Returns zero, a negative errno, or a negative NFS4ERR status code.
5428 * Since the clientid has expired, all compounds using sessions
5429 * associated with the stale clientid will be returning
5430 * NFS4ERR_BADSESSION in the sequence operation, and will therefore
5431 * be in some phase of session reset.
5433 int nfs4_proc_exchange_id(struct nfs_client
*clp
, struct rpc_cred
*cred
)
5435 nfs4_verifier verifier
;
5436 struct nfs41_exchange_id_args args
= {
5437 .verifier
= &verifier
,
5439 .flags
= EXCHGID4_FLAG_SUPP_MOVED_REFER
,
5441 struct nfs41_exchange_id_res res
= {
5445 struct rpc_message msg
= {
5446 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_EXCHANGE_ID
],
5452 nfs4_init_boot_verifier(clp
, &verifier
);
5453 args
.id_len
= nfs4_init_uniform_client_string(clp
, args
.id
,
5455 dprintk("NFS call exchange_id auth=%s, '%.*s'\n",
5456 clp
->cl_rpcclient
->cl_auth
->au_ops
->au_name
,
5457 args
.id_len
, args
.id
);
5459 res
.server_owner
= kzalloc(sizeof(struct nfs41_server_owner
),
5461 if (unlikely(res
.server_owner
== NULL
)) {
5466 res
.server_scope
= kzalloc(sizeof(struct nfs41_server_scope
),
5468 if (unlikely(res
.server_scope
== NULL
)) {
5470 goto out_server_owner
;
5473 res
.impl_id
= kzalloc(sizeof(struct nfs41_impl_id
), GFP_NOFS
);
5474 if (unlikely(res
.impl_id
== NULL
)) {
5476 goto out_server_scope
;
5479 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
5481 status
= nfs4_check_cl_exchange_flags(res
.flags
);
5484 clp
->cl_clientid
= res
.clientid
;
5485 clp
->cl_exchange_flags
= (res
.flags
& ~EXCHGID4_FLAG_CONFIRMED_R
);
5486 if (!(res
.flags
& EXCHGID4_FLAG_CONFIRMED_R
))
5487 clp
->cl_seqid
= res
.seqid
;
5489 kfree(clp
->cl_serverowner
);
5490 clp
->cl_serverowner
= res
.server_owner
;
5491 res
.server_owner
= NULL
;
5493 /* use the most recent implementation id */
5494 kfree(clp
->cl_implid
);
5495 clp
->cl_implid
= res
.impl_id
;
5497 if (clp
->cl_serverscope
!= NULL
&&
5498 !nfs41_same_server_scope(clp
->cl_serverscope
,
5499 res
.server_scope
)) {
5500 dprintk("%s: server_scope mismatch detected\n",
5502 set_bit(NFS4CLNT_SERVER_SCOPE_MISMATCH
, &clp
->cl_state
);
5503 kfree(clp
->cl_serverscope
);
5504 clp
->cl_serverscope
= NULL
;
5507 if (clp
->cl_serverscope
== NULL
) {
5508 clp
->cl_serverscope
= res
.server_scope
;
5515 kfree(res
.server_owner
);
5517 kfree(res
.server_scope
);
5519 if (clp
->cl_implid
!= NULL
)
5520 dprintk("NFS reply exchange_id: Server Implementation ID: "
5521 "domain: %s, name: %s, date: %llu,%u\n",
5522 clp
->cl_implid
->domain
, clp
->cl_implid
->name
,
5523 clp
->cl_implid
->date
.seconds
,
5524 clp
->cl_implid
->date
.nseconds
);
5525 dprintk("NFS reply exchange_id: %d\n", status
);
5529 static int _nfs4_proc_destroy_clientid(struct nfs_client
*clp
,
5530 struct rpc_cred
*cred
)
5532 struct rpc_message msg
= {
5533 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DESTROY_CLIENTID
],
5539 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
5541 dprintk("NFS: Got error %d from the server %s on "
5542 "DESTROY_CLIENTID.", status
, clp
->cl_hostname
);
5546 static int nfs4_proc_destroy_clientid(struct nfs_client
*clp
,
5547 struct rpc_cred
*cred
)
5552 for (loop
= NFS4_MAX_LOOP_ON_RECOVER
; loop
!= 0; loop
--) {
5553 ret
= _nfs4_proc_destroy_clientid(clp
, cred
);
5555 case -NFS4ERR_DELAY
:
5556 case -NFS4ERR_CLIENTID_BUSY
:
5566 int nfs4_destroy_clientid(struct nfs_client
*clp
)
5568 struct rpc_cred
*cred
;
5571 if (clp
->cl_mvops
->minor_version
< 1)
5573 if (clp
->cl_exchange_flags
== 0)
5575 if (clp
->cl_preserve_clid
)
5577 cred
= nfs4_get_exchange_id_cred(clp
);
5578 ret
= nfs4_proc_destroy_clientid(clp
, cred
);
5583 case -NFS4ERR_STALE_CLIENTID
:
5584 clp
->cl_exchange_flags
= 0;
5590 struct nfs4_get_lease_time_data
{
5591 struct nfs4_get_lease_time_args
*args
;
5592 struct nfs4_get_lease_time_res
*res
;
5593 struct nfs_client
*clp
;
5596 static void nfs4_get_lease_time_prepare(struct rpc_task
*task
,
5599 struct nfs4_get_lease_time_data
*data
=
5600 (struct nfs4_get_lease_time_data
*)calldata
;
5602 dprintk("--> %s\n", __func__
);
5603 /* just setup sequence, do not trigger session recovery
5604 since we're invoked within one */
5605 nfs41_setup_sequence(data
->clp
->cl_session
,
5606 &data
->args
->la_seq_args
,
5607 &data
->res
->lr_seq_res
,
5609 dprintk("<-- %s\n", __func__
);
5613 * Called from nfs4_state_manager thread for session setup, so don't recover
5614 * from sequence operation or clientid errors.
5616 static void nfs4_get_lease_time_done(struct rpc_task
*task
, void *calldata
)
5618 struct nfs4_get_lease_time_data
*data
=
5619 (struct nfs4_get_lease_time_data
*)calldata
;
5621 dprintk("--> %s\n", __func__
);
5622 if (!nfs41_sequence_done(task
, &data
->res
->lr_seq_res
))
5624 switch (task
->tk_status
) {
5625 case -NFS4ERR_DELAY
:
5626 case -NFS4ERR_GRACE
:
5627 dprintk("%s Retry: tk_status %d\n", __func__
, task
->tk_status
);
5628 rpc_delay(task
, NFS4_POLL_RETRY_MIN
);
5629 task
->tk_status
= 0;
5631 case -NFS4ERR_RETRY_UNCACHED_REP
:
5632 rpc_restart_call_prepare(task
);
5635 dprintk("<-- %s\n", __func__
);
5638 static const struct rpc_call_ops nfs4_get_lease_time_ops
= {
5639 .rpc_call_prepare
= nfs4_get_lease_time_prepare
,
5640 .rpc_call_done
= nfs4_get_lease_time_done
,
5643 int nfs4_proc_get_lease_time(struct nfs_client
*clp
, struct nfs_fsinfo
*fsinfo
)
5645 struct rpc_task
*task
;
5646 struct nfs4_get_lease_time_args args
;
5647 struct nfs4_get_lease_time_res res
= {
5648 .lr_fsinfo
= fsinfo
,
5650 struct nfs4_get_lease_time_data data
= {
5655 struct rpc_message msg
= {
5656 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GET_LEASE_TIME
],
5660 struct rpc_task_setup task_setup
= {
5661 .rpc_client
= clp
->cl_rpcclient
,
5662 .rpc_message
= &msg
,
5663 .callback_ops
= &nfs4_get_lease_time_ops
,
5664 .callback_data
= &data
,
5665 .flags
= RPC_TASK_TIMEOUT
,
5669 nfs41_init_sequence(&args
.la_seq_args
, &res
.lr_seq_res
, 0);
5670 nfs4_set_sequence_privileged(&args
.la_seq_args
);
5671 dprintk("--> %s\n", __func__
);
5672 task
= rpc_run_task(&task_setup
);
5675 status
= PTR_ERR(task
);
5677 status
= task
->tk_status
;
5680 dprintk("<-- %s return %d\n", __func__
, status
);
5686 * Initialize the values to be used by the client in CREATE_SESSION
5687 * If nfs4_init_session set the fore channel request and response sizes,
5690 * Set the back channel max_resp_sz_cached to zero to force the client to
5691 * always set csa_cachethis to FALSE because the current implementation
5692 * of the back channel DRC only supports caching the CB_SEQUENCE operation.
5694 static void nfs4_init_channel_attrs(struct nfs41_create_session_args
*args
)
5696 struct nfs4_session
*session
= args
->client
->cl_session
;
5697 unsigned int mxrqst_sz
= session
->fc_target_max_rqst_sz
,
5698 mxresp_sz
= session
->fc_target_max_resp_sz
;
5701 mxrqst_sz
= NFS_MAX_FILE_IO_SIZE
;
5703 mxresp_sz
= NFS_MAX_FILE_IO_SIZE
;
5704 /* Fore channel attributes */
5705 args
->fc_attrs
.max_rqst_sz
= mxrqst_sz
;
5706 args
->fc_attrs
.max_resp_sz
= mxresp_sz
;
5707 args
->fc_attrs
.max_ops
= NFS4_MAX_OPS
;
5708 args
->fc_attrs
.max_reqs
= max_session_slots
;
5710 dprintk("%s: Fore Channel : max_rqst_sz=%u max_resp_sz=%u "
5711 "max_ops=%u max_reqs=%u\n",
5713 args
->fc_attrs
.max_rqst_sz
, args
->fc_attrs
.max_resp_sz
,
5714 args
->fc_attrs
.max_ops
, args
->fc_attrs
.max_reqs
);
5716 /* Back channel attributes */
5717 args
->bc_attrs
.max_rqst_sz
= PAGE_SIZE
;
5718 args
->bc_attrs
.max_resp_sz
= PAGE_SIZE
;
5719 args
->bc_attrs
.max_resp_sz_cached
= 0;
5720 args
->bc_attrs
.max_ops
= NFS4_MAX_BACK_CHANNEL_OPS
;
5721 args
->bc_attrs
.max_reqs
= 1;
5723 dprintk("%s: Back Channel : max_rqst_sz=%u max_resp_sz=%u "
5724 "max_resp_sz_cached=%u max_ops=%u max_reqs=%u\n",
5726 args
->bc_attrs
.max_rqst_sz
, args
->bc_attrs
.max_resp_sz
,
5727 args
->bc_attrs
.max_resp_sz_cached
, args
->bc_attrs
.max_ops
,
5728 args
->bc_attrs
.max_reqs
);
5731 static int nfs4_verify_fore_channel_attrs(struct nfs41_create_session_args
*args
, struct nfs4_session
*session
)
5733 struct nfs4_channel_attrs
*sent
= &args
->fc_attrs
;
5734 struct nfs4_channel_attrs
*rcvd
= &session
->fc_attrs
;
5736 if (rcvd
->max_resp_sz
> sent
->max_resp_sz
)
5739 * Our requested max_ops is the minimum we need; we're not
5740 * prepared to break up compounds into smaller pieces than that.
5741 * So, no point even trying to continue if the server won't
5744 if (rcvd
->max_ops
< sent
->max_ops
)
5746 if (rcvd
->max_reqs
== 0)
5748 if (rcvd
->max_reqs
> NFS4_MAX_SLOT_TABLE
)
5749 rcvd
->max_reqs
= NFS4_MAX_SLOT_TABLE
;
5753 static int nfs4_verify_back_channel_attrs(struct nfs41_create_session_args
*args
, struct nfs4_session
*session
)
5755 struct nfs4_channel_attrs
*sent
= &args
->bc_attrs
;
5756 struct nfs4_channel_attrs
*rcvd
= &session
->bc_attrs
;
5758 if (rcvd
->max_rqst_sz
> sent
->max_rqst_sz
)
5760 if (rcvd
->max_resp_sz
< sent
->max_resp_sz
)
5762 if (rcvd
->max_resp_sz_cached
> sent
->max_resp_sz_cached
)
5764 /* These would render the backchannel useless: */
5765 if (rcvd
->max_ops
!= sent
->max_ops
)
5767 if (rcvd
->max_reqs
!= sent
->max_reqs
)
5772 static int nfs4_verify_channel_attrs(struct nfs41_create_session_args
*args
,
5773 struct nfs4_session
*session
)
5777 ret
= nfs4_verify_fore_channel_attrs(args
, session
);
5780 return nfs4_verify_back_channel_attrs(args
, session
);
5783 static int _nfs4_proc_create_session(struct nfs_client
*clp
,
5784 struct rpc_cred
*cred
)
5786 struct nfs4_session
*session
= clp
->cl_session
;
5787 struct nfs41_create_session_args args
= {
5789 .cb_program
= NFS4_CALLBACK
,
5791 struct nfs41_create_session_res res
= {
5794 struct rpc_message msg
= {
5795 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CREATE_SESSION
],
5802 nfs4_init_channel_attrs(&args
);
5803 args
.flags
= (SESSION4_PERSIST
| SESSION4_BACK_CHAN
);
5805 status
= rpc_call_sync(session
->clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
5808 /* Verify the session's negotiated channel_attrs values */
5809 status
= nfs4_verify_channel_attrs(&args
, session
);
5810 /* Increment the clientid slot sequence id */
5818 * Issues a CREATE_SESSION operation to the server.
5819 * It is the responsibility of the caller to verify the session is
5820 * expired before calling this routine.
5822 int nfs4_proc_create_session(struct nfs_client
*clp
, struct rpc_cred
*cred
)
5826 struct nfs4_session
*session
= clp
->cl_session
;
5828 dprintk("--> %s clp=%p session=%p\n", __func__
, clp
, session
);
5830 status
= _nfs4_proc_create_session(clp
, cred
);
5834 /* Init or reset the session slot tables */
5835 status
= nfs4_setup_session_slot_tables(session
);
5836 dprintk("slot table setup returned %d\n", status
);
5840 ptr
= (unsigned *)&session
->sess_id
.data
[0];
5841 dprintk("%s client>seqid %d sessionid %u:%u:%u:%u\n", __func__
,
5842 clp
->cl_seqid
, ptr
[0], ptr
[1], ptr
[2], ptr
[3]);
5844 dprintk("<-- %s\n", __func__
);
5849 * Issue the over-the-wire RPC DESTROY_SESSION.
5850 * The caller must serialize access to this routine.
5852 int nfs4_proc_destroy_session(struct nfs4_session
*session
,
5853 struct rpc_cred
*cred
)
5855 struct rpc_message msg
= {
5856 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DESTROY_SESSION
],
5857 .rpc_argp
= session
,
5862 dprintk("--> nfs4_proc_destroy_session\n");
5864 /* session is still being setup */
5865 if (session
->clp
->cl_cons_state
!= NFS_CS_READY
)
5868 status
= rpc_call_sync(session
->clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
5871 dprintk("NFS: Got error %d from the server on DESTROY_SESSION. "
5872 "Session has been destroyed regardless...\n", status
);
5874 dprintk("<-- nfs4_proc_destroy_session\n");
5879 * Renew the cl_session lease.
5881 struct nfs4_sequence_data
{
5882 struct nfs_client
*clp
;
5883 struct nfs4_sequence_args args
;
5884 struct nfs4_sequence_res res
;
5887 static void nfs41_sequence_release(void *data
)
5889 struct nfs4_sequence_data
*calldata
= data
;
5890 struct nfs_client
*clp
= calldata
->clp
;
5892 if (atomic_read(&clp
->cl_count
) > 1)
5893 nfs4_schedule_state_renewal(clp
);
5894 nfs_put_client(clp
);
5898 static int nfs41_sequence_handle_errors(struct rpc_task
*task
, struct nfs_client
*clp
)
5900 switch(task
->tk_status
) {
5901 case -NFS4ERR_DELAY
:
5902 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
5905 nfs4_schedule_lease_recovery(clp
);
5910 static void nfs41_sequence_call_done(struct rpc_task
*task
, void *data
)
5912 struct nfs4_sequence_data
*calldata
= data
;
5913 struct nfs_client
*clp
= calldata
->clp
;
5915 if (!nfs41_sequence_done(task
, task
->tk_msg
.rpc_resp
))
5918 if (task
->tk_status
< 0) {
5919 dprintk("%s ERROR %d\n", __func__
, task
->tk_status
);
5920 if (atomic_read(&clp
->cl_count
) == 1)
5923 if (nfs41_sequence_handle_errors(task
, clp
) == -EAGAIN
) {
5924 rpc_restart_call_prepare(task
);
5928 dprintk("%s rpc_cred %p\n", __func__
, task
->tk_msg
.rpc_cred
);
5930 dprintk("<-- %s\n", __func__
);
5933 static void nfs41_sequence_prepare(struct rpc_task
*task
, void *data
)
5935 struct nfs4_sequence_data
*calldata
= data
;
5936 struct nfs_client
*clp
= calldata
->clp
;
5937 struct nfs4_sequence_args
*args
;
5938 struct nfs4_sequence_res
*res
;
5940 args
= task
->tk_msg
.rpc_argp
;
5941 res
= task
->tk_msg
.rpc_resp
;
5943 nfs41_setup_sequence(clp
->cl_session
, args
, res
, task
);
5946 static const struct rpc_call_ops nfs41_sequence_ops
= {
5947 .rpc_call_done
= nfs41_sequence_call_done
,
5948 .rpc_call_prepare
= nfs41_sequence_prepare
,
5949 .rpc_release
= nfs41_sequence_release
,
5952 static struct rpc_task
*_nfs41_proc_sequence(struct nfs_client
*clp
,
5953 struct rpc_cred
*cred
,
5956 struct nfs4_sequence_data
*calldata
;
5957 struct rpc_message msg
= {
5958 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SEQUENCE
],
5961 struct rpc_task_setup task_setup_data
= {
5962 .rpc_client
= clp
->cl_rpcclient
,
5963 .rpc_message
= &msg
,
5964 .callback_ops
= &nfs41_sequence_ops
,
5965 .flags
= RPC_TASK_ASYNC
| RPC_TASK_SOFT
,
5968 if (!atomic_inc_not_zero(&clp
->cl_count
))
5969 return ERR_PTR(-EIO
);
5970 calldata
= kzalloc(sizeof(*calldata
), GFP_NOFS
);
5971 if (calldata
== NULL
) {
5972 nfs_put_client(clp
);
5973 return ERR_PTR(-ENOMEM
);
5975 nfs41_init_sequence(&calldata
->args
, &calldata
->res
, 0);
5977 nfs4_set_sequence_privileged(&calldata
->args
);
5978 msg
.rpc_argp
= &calldata
->args
;
5979 msg
.rpc_resp
= &calldata
->res
;
5980 calldata
->clp
= clp
;
5981 task_setup_data
.callback_data
= calldata
;
5983 return rpc_run_task(&task_setup_data
);
5986 static int nfs41_proc_async_sequence(struct nfs_client
*clp
, struct rpc_cred
*cred
, unsigned renew_flags
)
5988 struct rpc_task
*task
;
5991 if ((renew_flags
& NFS4_RENEW_TIMEOUT
) == 0)
5993 task
= _nfs41_proc_sequence(clp
, cred
, false);
5995 ret
= PTR_ERR(task
);
5997 rpc_put_task_async(task
);
5998 dprintk("<-- %s status=%d\n", __func__
, ret
);
6002 static int nfs4_proc_sequence(struct nfs_client
*clp
, struct rpc_cred
*cred
)
6004 struct rpc_task
*task
;
6007 task
= _nfs41_proc_sequence(clp
, cred
, true);
6009 ret
= PTR_ERR(task
);
6012 ret
= rpc_wait_for_completion_task(task
);
6014 struct nfs4_sequence_res
*res
= task
->tk_msg
.rpc_resp
;
6016 if (task
->tk_status
== 0)
6017 nfs41_handle_sequence_flag_errors(clp
, res
->sr_status_flags
);
6018 ret
= task
->tk_status
;
6022 dprintk("<-- %s status=%d\n", __func__
, ret
);
6026 struct nfs4_reclaim_complete_data
{
6027 struct nfs_client
*clp
;
6028 struct nfs41_reclaim_complete_args arg
;
6029 struct nfs41_reclaim_complete_res res
;
6032 static void nfs4_reclaim_complete_prepare(struct rpc_task
*task
, void *data
)
6034 struct nfs4_reclaim_complete_data
*calldata
= data
;
6036 nfs41_setup_sequence(calldata
->clp
->cl_session
,
6037 &calldata
->arg
.seq_args
,
6038 &calldata
->res
.seq_res
,
6042 static int nfs41_reclaim_complete_handle_errors(struct rpc_task
*task
, struct nfs_client
*clp
)
6044 switch(task
->tk_status
) {
6046 case -NFS4ERR_COMPLETE_ALREADY
:
6047 case -NFS4ERR_WRONG_CRED
: /* What to do here? */
6049 case -NFS4ERR_DELAY
:
6050 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
6052 case -NFS4ERR_RETRY_UNCACHED_REP
:
6055 nfs4_schedule_lease_recovery(clp
);
6060 static void nfs4_reclaim_complete_done(struct rpc_task
*task
, void *data
)
6062 struct nfs4_reclaim_complete_data
*calldata
= data
;
6063 struct nfs_client
*clp
= calldata
->clp
;
6064 struct nfs4_sequence_res
*res
= &calldata
->res
.seq_res
;
6066 dprintk("--> %s\n", __func__
);
6067 if (!nfs41_sequence_done(task
, res
))
6070 if (nfs41_reclaim_complete_handle_errors(task
, clp
) == -EAGAIN
) {
6071 rpc_restart_call_prepare(task
);
6074 dprintk("<-- %s\n", __func__
);
6077 static void nfs4_free_reclaim_complete_data(void *data
)
6079 struct nfs4_reclaim_complete_data
*calldata
= data
;
6084 static const struct rpc_call_ops nfs4_reclaim_complete_call_ops
= {
6085 .rpc_call_prepare
= nfs4_reclaim_complete_prepare
,
6086 .rpc_call_done
= nfs4_reclaim_complete_done
,
6087 .rpc_release
= nfs4_free_reclaim_complete_data
,
6091 * Issue a global reclaim complete.
6093 static int nfs41_proc_reclaim_complete(struct nfs_client
*clp
)
6095 struct nfs4_reclaim_complete_data
*calldata
;
6096 struct rpc_task
*task
;
6097 struct rpc_message msg
= {
6098 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RECLAIM_COMPLETE
],
6100 struct rpc_task_setup task_setup_data
= {
6101 .rpc_client
= clp
->cl_rpcclient
,
6102 .rpc_message
= &msg
,
6103 .callback_ops
= &nfs4_reclaim_complete_call_ops
,
6104 .flags
= RPC_TASK_ASYNC
,
6106 int status
= -ENOMEM
;
6108 dprintk("--> %s\n", __func__
);
6109 calldata
= kzalloc(sizeof(*calldata
), GFP_NOFS
);
6110 if (calldata
== NULL
)
6112 calldata
->clp
= clp
;
6113 calldata
->arg
.one_fs
= 0;
6115 nfs41_init_sequence(&calldata
->arg
.seq_args
, &calldata
->res
.seq_res
, 0);
6116 nfs4_set_sequence_privileged(&calldata
->arg
.seq_args
);
6117 msg
.rpc_argp
= &calldata
->arg
;
6118 msg
.rpc_resp
= &calldata
->res
;
6119 task_setup_data
.callback_data
= calldata
;
6120 task
= rpc_run_task(&task_setup_data
);
6122 status
= PTR_ERR(task
);
6125 status
= nfs4_wait_for_completion_rpc_task(task
);
6127 status
= task
->tk_status
;
6131 dprintk("<-- %s status=%d\n", __func__
, status
);
6136 nfs4_layoutget_prepare(struct rpc_task
*task
, void *calldata
)
6138 struct nfs4_layoutget
*lgp
= calldata
;
6139 struct nfs_server
*server
= NFS_SERVER(lgp
->args
.inode
);
6140 struct nfs4_session
*session
= nfs4_get_session(server
);
6142 dprintk("--> %s\n", __func__
);
6143 /* Note the is a race here, where a CB_LAYOUTRECALL can come in
6144 * right now covering the LAYOUTGET we are about to send.
6145 * However, that is not so catastrophic, and there seems
6146 * to be no way to prevent it completely.
6148 if (nfs41_setup_sequence(session
, &lgp
->args
.seq_args
,
6149 &lgp
->res
.seq_res
, task
))
6151 if (pnfs_choose_layoutget_stateid(&lgp
->args
.stateid
,
6152 NFS_I(lgp
->args
.inode
)->layout
,
6153 lgp
->args
.ctx
->state
)) {
6154 rpc_exit(task
, NFS4_OK
);
6158 static void nfs4_layoutget_done(struct rpc_task
*task
, void *calldata
)
6160 struct nfs4_layoutget
*lgp
= calldata
;
6161 struct inode
*inode
= lgp
->args
.inode
;
6162 struct nfs_server
*server
= NFS_SERVER(inode
);
6163 struct pnfs_layout_hdr
*lo
;
6164 struct nfs4_state
*state
= NULL
;
6165 unsigned long timeo
, giveup
;
6167 dprintk("--> %s\n", __func__
);
6169 if (!nfs41_sequence_done(task
, &lgp
->res
.seq_res
))
6172 switch (task
->tk_status
) {
6175 case -NFS4ERR_LAYOUTTRYLATER
:
6176 case -NFS4ERR_RECALLCONFLICT
:
6177 timeo
= rpc_get_timeout(task
->tk_client
);
6178 giveup
= lgp
->args
.timestamp
+ timeo
;
6179 if (time_after(giveup
, jiffies
))
6180 task
->tk_status
= -NFS4ERR_DELAY
;
6182 case -NFS4ERR_EXPIRED
:
6183 case -NFS4ERR_BAD_STATEID
:
6184 spin_lock(&inode
->i_lock
);
6185 lo
= NFS_I(inode
)->layout
;
6186 if (!lo
|| list_empty(&lo
->plh_segs
)) {
6187 spin_unlock(&inode
->i_lock
);
6188 /* If the open stateid was bad, then recover it. */
6189 state
= lgp
->args
.ctx
->state
;
6193 pnfs_mark_matching_lsegs_invalid(lo
, &head
, NULL
);
6194 spin_unlock(&inode
->i_lock
);
6195 /* Mark the bad layout state as invalid, then
6196 * retry using the open stateid. */
6197 pnfs_free_lseg_list(&head
);
6200 if (nfs4_async_handle_error(task
, server
, state
) == -EAGAIN
)
6201 rpc_restart_call_prepare(task
);
6203 dprintk("<-- %s\n", __func__
);
6206 static size_t max_response_pages(struct nfs_server
*server
)
6208 u32 max_resp_sz
= server
->nfs_client
->cl_session
->fc_attrs
.max_resp_sz
;
6209 return nfs_page_array_len(0, max_resp_sz
);
6212 static void nfs4_free_pages(struct page
**pages
, size_t size
)
6219 for (i
= 0; i
< size
; i
++) {
6222 __free_page(pages
[i
]);
6227 static struct page
**nfs4_alloc_pages(size_t size
, gfp_t gfp_flags
)
6229 struct page
**pages
;
6232 pages
= kcalloc(size
, sizeof(struct page
*), gfp_flags
);
6234 dprintk("%s: can't alloc array of %zu pages\n", __func__
, size
);
6238 for (i
= 0; i
< size
; i
++) {
6239 pages
[i
] = alloc_page(gfp_flags
);
6241 dprintk("%s: failed to allocate page\n", __func__
);
6242 nfs4_free_pages(pages
, size
);
6250 static void nfs4_layoutget_release(void *calldata
)
6252 struct nfs4_layoutget
*lgp
= calldata
;
6253 struct inode
*inode
= lgp
->args
.inode
;
6254 struct nfs_server
*server
= NFS_SERVER(inode
);
6255 size_t max_pages
= max_response_pages(server
);
6257 dprintk("--> %s\n", __func__
);
6258 nfs4_free_pages(lgp
->args
.layout
.pages
, max_pages
);
6259 pnfs_put_layout_hdr(NFS_I(inode
)->layout
);
6260 put_nfs_open_context(lgp
->args
.ctx
);
6262 dprintk("<-- %s\n", __func__
);
6265 static const struct rpc_call_ops nfs4_layoutget_call_ops
= {
6266 .rpc_call_prepare
= nfs4_layoutget_prepare
,
6267 .rpc_call_done
= nfs4_layoutget_done
,
6268 .rpc_release
= nfs4_layoutget_release
,
6271 struct pnfs_layout_segment
*
6272 nfs4_proc_layoutget(struct nfs4_layoutget
*lgp
, gfp_t gfp_flags
)
6274 struct inode
*inode
= lgp
->args
.inode
;
6275 struct nfs_server
*server
= NFS_SERVER(inode
);
6276 size_t max_pages
= max_response_pages(server
);
6277 struct rpc_task
*task
;
6278 struct rpc_message msg
= {
6279 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LAYOUTGET
],
6280 .rpc_argp
= &lgp
->args
,
6281 .rpc_resp
= &lgp
->res
,
6283 struct rpc_task_setup task_setup_data
= {
6284 .rpc_client
= server
->client
,
6285 .rpc_message
= &msg
,
6286 .callback_ops
= &nfs4_layoutget_call_ops
,
6287 .callback_data
= lgp
,
6288 .flags
= RPC_TASK_ASYNC
,
6290 struct pnfs_layout_segment
*lseg
= NULL
;
6293 dprintk("--> %s\n", __func__
);
6295 lgp
->args
.layout
.pages
= nfs4_alloc_pages(max_pages
, gfp_flags
);
6296 if (!lgp
->args
.layout
.pages
) {
6297 nfs4_layoutget_release(lgp
);
6298 return ERR_PTR(-ENOMEM
);
6300 lgp
->args
.layout
.pglen
= max_pages
* PAGE_SIZE
;
6301 lgp
->args
.timestamp
= jiffies
;
6303 lgp
->res
.layoutp
= &lgp
->args
.layout
;
6304 lgp
->res
.seq_res
.sr_slot
= NULL
;
6305 nfs41_init_sequence(&lgp
->args
.seq_args
, &lgp
->res
.seq_res
, 0);
6307 /* nfs4_layoutget_release calls pnfs_put_layout_hdr */
6308 pnfs_get_layout_hdr(NFS_I(inode
)->layout
);
6310 task
= rpc_run_task(&task_setup_data
);
6312 return ERR_CAST(task
);
6313 status
= nfs4_wait_for_completion_rpc_task(task
);
6315 status
= task
->tk_status
;
6316 /* if layoutp->len is 0, nfs4_layoutget_prepare called rpc_exit */
6317 if (status
== 0 && lgp
->res
.layoutp
->len
)
6318 lseg
= pnfs_layout_process(lgp
);
6320 dprintk("<-- %s status=%d\n", __func__
, status
);
6322 return ERR_PTR(status
);
6327 nfs4_layoutreturn_prepare(struct rpc_task
*task
, void *calldata
)
6329 struct nfs4_layoutreturn
*lrp
= calldata
;
6331 dprintk("--> %s\n", __func__
);
6332 nfs41_setup_sequence(lrp
->clp
->cl_session
,
6333 &lrp
->args
.seq_args
,
6338 static void nfs4_layoutreturn_done(struct rpc_task
*task
, void *calldata
)
6340 struct nfs4_layoutreturn
*lrp
= calldata
;
6341 struct nfs_server
*server
;
6343 dprintk("--> %s\n", __func__
);
6345 if (!nfs41_sequence_done(task
, &lrp
->res
.seq_res
))
6348 server
= NFS_SERVER(lrp
->args
.inode
);
6349 if (nfs4_async_handle_error(task
, server
, NULL
) == -EAGAIN
) {
6350 rpc_restart_call_prepare(task
);
6353 dprintk("<-- %s\n", __func__
);
6356 static void nfs4_layoutreturn_release(void *calldata
)
6358 struct nfs4_layoutreturn
*lrp
= calldata
;
6359 struct pnfs_layout_hdr
*lo
= lrp
->args
.layout
;
6361 dprintk("--> %s\n", __func__
);
6362 spin_lock(&lo
->plh_inode
->i_lock
);
6363 if (lrp
->res
.lrs_present
)
6364 pnfs_set_layout_stateid(lo
, &lrp
->res
.stateid
, true);
6365 lo
->plh_block_lgets
--;
6366 spin_unlock(&lo
->plh_inode
->i_lock
);
6367 pnfs_put_layout_hdr(lrp
->args
.layout
);
6369 dprintk("<-- %s\n", __func__
);
6372 static const struct rpc_call_ops nfs4_layoutreturn_call_ops
= {
6373 .rpc_call_prepare
= nfs4_layoutreturn_prepare
,
6374 .rpc_call_done
= nfs4_layoutreturn_done
,
6375 .rpc_release
= nfs4_layoutreturn_release
,
6378 int nfs4_proc_layoutreturn(struct nfs4_layoutreturn
*lrp
)
6380 struct rpc_task
*task
;
6381 struct rpc_message msg
= {
6382 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LAYOUTRETURN
],
6383 .rpc_argp
= &lrp
->args
,
6384 .rpc_resp
= &lrp
->res
,
6386 struct rpc_task_setup task_setup_data
= {
6387 .rpc_client
= lrp
->clp
->cl_rpcclient
,
6388 .rpc_message
= &msg
,
6389 .callback_ops
= &nfs4_layoutreturn_call_ops
,
6390 .callback_data
= lrp
,
6394 dprintk("--> %s\n", __func__
);
6395 nfs41_init_sequence(&lrp
->args
.seq_args
, &lrp
->res
.seq_res
, 1);
6396 task
= rpc_run_task(&task_setup_data
);
6398 return PTR_ERR(task
);
6399 status
= task
->tk_status
;
6400 dprintk("<-- %s status=%d\n", __func__
, status
);
6406 * Retrieve the list of Data Server devices from the MDS.
6408 static int _nfs4_getdevicelist(struct nfs_server
*server
,
6409 const struct nfs_fh
*fh
,
6410 struct pnfs_devicelist
*devlist
)
6412 struct nfs4_getdevicelist_args args
= {
6414 .layoutclass
= server
->pnfs_curr_ld
->id
,
6416 struct nfs4_getdevicelist_res res
= {
6419 struct rpc_message msg
= {
6420 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETDEVICELIST
],
6426 dprintk("--> %s\n", __func__
);
6427 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
,
6429 dprintk("<-- %s status=%d\n", __func__
, status
);
6433 int nfs4_proc_getdevicelist(struct nfs_server
*server
,
6434 const struct nfs_fh
*fh
,
6435 struct pnfs_devicelist
*devlist
)
6437 struct nfs4_exception exception
= { };
6441 err
= nfs4_handle_exception(server
,
6442 _nfs4_getdevicelist(server
, fh
, devlist
),
6444 } while (exception
.retry
);
6446 dprintk("%s: err=%d, num_devs=%u\n", __func__
,
6447 err
, devlist
->num_devs
);
6451 EXPORT_SYMBOL_GPL(nfs4_proc_getdevicelist
);
6454 _nfs4_proc_getdeviceinfo(struct nfs_server
*server
, struct pnfs_device
*pdev
)
6456 struct nfs4_getdeviceinfo_args args
= {
6459 struct nfs4_getdeviceinfo_res res
= {
6462 struct rpc_message msg
= {
6463 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETDEVICEINFO
],
6469 dprintk("--> %s\n", __func__
);
6470 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
6471 dprintk("<-- %s status=%d\n", __func__
, status
);
6476 int nfs4_proc_getdeviceinfo(struct nfs_server
*server
, struct pnfs_device
*pdev
)
6478 struct nfs4_exception exception
= { };
6482 err
= nfs4_handle_exception(server
,
6483 _nfs4_proc_getdeviceinfo(server
, pdev
),
6485 } while (exception
.retry
);
6488 EXPORT_SYMBOL_GPL(nfs4_proc_getdeviceinfo
);
6490 static void nfs4_layoutcommit_prepare(struct rpc_task
*task
, void *calldata
)
6492 struct nfs4_layoutcommit_data
*data
= calldata
;
6493 struct nfs_server
*server
= NFS_SERVER(data
->args
.inode
);
6494 struct nfs4_session
*session
= nfs4_get_session(server
);
6496 nfs41_setup_sequence(session
,
6497 &data
->args
.seq_args
,
6503 nfs4_layoutcommit_done(struct rpc_task
*task
, void *calldata
)
6505 struct nfs4_layoutcommit_data
*data
= calldata
;
6506 struct nfs_server
*server
= NFS_SERVER(data
->args
.inode
);
6508 if (!nfs41_sequence_done(task
, &data
->res
.seq_res
))
6511 switch (task
->tk_status
) { /* Just ignore these failures */
6512 case -NFS4ERR_DELEG_REVOKED
: /* layout was recalled */
6513 case -NFS4ERR_BADIOMODE
: /* no IOMODE_RW layout for range */
6514 case -NFS4ERR_BADLAYOUT
: /* no layout */
6515 case -NFS4ERR_GRACE
: /* loca_recalim always false */
6516 task
->tk_status
= 0;
6519 nfs_post_op_update_inode_force_wcc(data
->args
.inode
,
6523 if (nfs4_async_handle_error(task
, server
, NULL
) == -EAGAIN
) {
6524 rpc_restart_call_prepare(task
);
6530 static void nfs4_layoutcommit_release(void *calldata
)
6532 struct nfs4_layoutcommit_data
*data
= calldata
;
6534 pnfs_cleanup_layoutcommit(data
);
6535 put_rpccred(data
->cred
);
6539 static const struct rpc_call_ops nfs4_layoutcommit_ops
= {
6540 .rpc_call_prepare
= nfs4_layoutcommit_prepare
,
6541 .rpc_call_done
= nfs4_layoutcommit_done
,
6542 .rpc_release
= nfs4_layoutcommit_release
,
6546 nfs4_proc_layoutcommit(struct nfs4_layoutcommit_data
*data
, bool sync
)
6548 struct rpc_message msg
= {
6549 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LAYOUTCOMMIT
],
6550 .rpc_argp
= &data
->args
,
6551 .rpc_resp
= &data
->res
,
6552 .rpc_cred
= data
->cred
,
6554 struct rpc_task_setup task_setup_data
= {
6555 .task
= &data
->task
,
6556 .rpc_client
= NFS_CLIENT(data
->args
.inode
),
6557 .rpc_message
= &msg
,
6558 .callback_ops
= &nfs4_layoutcommit_ops
,
6559 .callback_data
= data
,
6560 .flags
= RPC_TASK_ASYNC
,
6562 struct rpc_task
*task
;
6565 dprintk("NFS: %4d initiating layoutcommit call. sync %d "
6566 "lbw: %llu inode %lu\n",
6567 data
->task
.tk_pid
, sync
,
6568 data
->args
.lastbytewritten
,
6569 data
->args
.inode
->i_ino
);
6571 nfs41_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
6572 task
= rpc_run_task(&task_setup_data
);
6574 return PTR_ERR(task
);
6577 status
= nfs4_wait_for_completion_rpc_task(task
);
6580 status
= task
->tk_status
;
6582 dprintk("%s: status %d\n", __func__
, status
);
6588 _nfs41_proc_secinfo_no_name(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
6589 struct nfs_fsinfo
*info
, struct nfs4_secinfo_flavors
*flavors
)
6591 struct nfs41_secinfo_no_name_args args
= {
6592 .style
= SECINFO_STYLE_CURRENT_FH
,
6594 struct nfs4_secinfo_res res
= {
6597 struct rpc_message msg
= {
6598 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SECINFO_NO_NAME
],
6602 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
6606 nfs41_proc_secinfo_no_name(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
6607 struct nfs_fsinfo
*info
, struct nfs4_secinfo_flavors
*flavors
)
6609 struct nfs4_exception exception
= { };
6612 err
= _nfs41_proc_secinfo_no_name(server
, fhandle
, info
, flavors
);
6615 case -NFS4ERR_WRONGSEC
:
6616 case -NFS4ERR_NOTSUPP
:
6619 err
= nfs4_handle_exception(server
, err
, &exception
);
6621 } while (exception
.retry
);
6627 nfs41_find_root_sec(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
6628 struct nfs_fsinfo
*info
)
6632 rpc_authflavor_t flavor
;
6633 struct nfs4_secinfo_flavors
*flavors
;
6635 page
= alloc_page(GFP_KERNEL
);
6641 flavors
= page_address(page
);
6642 err
= nfs41_proc_secinfo_no_name(server
, fhandle
, info
, flavors
);
6645 * Fall back on "guess and check" method if
6646 * the server doesn't support SECINFO_NO_NAME
6648 if (err
== -NFS4ERR_WRONGSEC
|| err
== -NFS4ERR_NOTSUPP
) {
6649 err
= nfs4_find_root_sec(server
, fhandle
, info
);
6655 flavor
= nfs_find_best_sec(flavors
);
6657 err
= nfs4_lookup_root_sec(server
, fhandle
, info
, flavor
);
6667 static int _nfs41_test_stateid(struct nfs_server
*server
, nfs4_stateid
*stateid
)
6670 struct nfs41_test_stateid_args args
= {
6673 struct nfs41_test_stateid_res res
;
6674 struct rpc_message msg
= {
6675 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_TEST_STATEID
],
6680 dprintk("NFS call test_stateid %p\n", stateid
);
6681 nfs41_init_sequence(&args
.seq_args
, &res
.seq_res
, 0);
6682 nfs4_set_sequence_privileged(&args
.seq_args
);
6683 status
= nfs4_call_sync_sequence(server
->client
, server
, &msg
,
6684 &args
.seq_args
, &res
.seq_res
);
6685 if (status
!= NFS_OK
) {
6686 dprintk("NFS reply test_stateid: failed, %d\n", status
);
6689 dprintk("NFS reply test_stateid: succeeded, %d\n", -res
.status
);
6694 * nfs41_test_stateid - perform a TEST_STATEID operation
6696 * @server: server / transport on which to perform the operation
6697 * @stateid: state ID to test
6699 * Returns NFS_OK if the server recognizes that "stateid" is valid.
6700 * Otherwise a negative NFS4ERR value is returned if the operation
6701 * failed or the state ID is not currently valid.
6703 static int nfs41_test_stateid(struct nfs_server
*server
, nfs4_stateid
*stateid
)
6705 struct nfs4_exception exception
= { };
6708 err
= _nfs41_test_stateid(server
, stateid
);
6709 if (err
!= -NFS4ERR_DELAY
)
6711 nfs4_handle_exception(server
, err
, &exception
);
6712 } while (exception
.retry
);
6716 static int _nfs4_free_stateid(struct nfs_server
*server
, nfs4_stateid
*stateid
)
6718 struct nfs41_free_stateid_args args
= {
6721 struct nfs41_free_stateid_res res
;
6722 struct rpc_message msg
= {
6723 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FREE_STATEID
],
6729 dprintk("NFS call free_stateid %p\n", stateid
);
6730 nfs41_init_sequence(&args
.seq_args
, &res
.seq_res
, 0);
6731 nfs4_set_sequence_privileged(&args
.seq_args
);
6732 status
= nfs4_call_sync_sequence(server
->client
, server
, &msg
,
6733 &args
.seq_args
, &res
.seq_res
);
6734 dprintk("NFS reply free_stateid: %d\n", status
);
6739 * nfs41_free_stateid - perform a FREE_STATEID operation
6741 * @server: server / transport on which to perform the operation
6742 * @stateid: state ID to release
6744 * Returns NFS_OK if the server freed "stateid". Otherwise a
6745 * negative NFS4ERR value is returned.
6747 static int nfs41_free_stateid(struct nfs_server
*server
, nfs4_stateid
*stateid
)
6749 struct nfs4_exception exception
= { };
6752 err
= _nfs4_free_stateid(server
, stateid
);
6753 if (err
!= -NFS4ERR_DELAY
)
6755 nfs4_handle_exception(server
, err
, &exception
);
6756 } while (exception
.retry
);
6760 static bool nfs41_match_stateid(const nfs4_stateid
*s1
,
6761 const nfs4_stateid
*s2
)
6763 if (memcmp(s1
->other
, s2
->other
, sizeof(s1
->other
)) != 0)
6766 if (s1
->seqid
== s2
->seqid
)
6768 if (s1
->seqid
== 0 || s2
->seqid
== 0)
6774 #endif /* CONFIG_NFS_V4_1 */
6776 static bool nfs4_match_stateid(const nfs4_stateid
*s1
,
6777 const nfs4_stateid
*s2
)
6779 return nfs4_stateid_match(s1
, s2
);
6783 static const struct nfs4_state_recovery_ops nfs40_reboot_recovery_ops
= {
6784 .owner_flag_bit
= NFS_OWNER_RECLAIM_REBOOT
,
6785 .state_flag_bit
= NFS_STATE_RECLAIM_REBOOT
,
6786 .recover_open
= nfs4_open_reclaim
,
6787 .recover_lock
= nfs4_lock_reclaim
,
6788 .establish_clid
= nfs4_init_clientid
,
6789 .get_clid_cred
= nfs4_get_setclientid_cred
,
6790 .detect_trunking
= nfs40_discover_server_trunking
,
6793 #if defined(CONFIG_NFS_V4_1)
6794 static const struct nfs4_state_recovery_ops nfs41_reboot_recovery_ops
= {
6795 .owner_flag_bit
= NFS_OWNER_RECLAIM_REBOOT
,
6796 .state_flag_bit
= NFS_STATE_RECLAIM_REBOOT
,
6797 .recover_open
= nfs4_open_reclaim
,
6798 .recover_lock
= nfs4_lock_reclaim
,
6799 .establish_clid
= nfs41_init_clientid
,
6800 .get_clid_cred
= nfs4_get_exchange_id_cred
,
6801 .reclaim_complete
= nfs41_proc_reclaim_complete
,
6802 .detect_trunking
= nfs41_discover_server_trunking
,
6804 #endif /* CONFIG_NFS_V4_1 */
6806 static const struct nfs4_state_recovery_ops nfs40_nograce_recovery_ops
= {
6807 .owner_flag_bit
= NFS_OWNER_RECLAIM_NOGRACE
,
6808 .state_flag_bit
= NFS_STATE_RECLAIM_NOGRACE
,
6809 .recover_open
= nfs4_open_expired
,
6810 .recover_lock
= nfs4_lock_expired
,
6811 .establish_clid
= nfs4_init_clientid
,
6812 .get_clid_cred
= nfs4_get_setclientid_cred
,
6815 #if defined(CONFIG_NFS_V4_1)
6816 static const struct nfs4_state_recovery_ops nfs41_nograce_recovery_ops
= {
6817 .owner_flag_bit
= NFS_OWNER_RECLAIM_NOGRACE
,
6818 .state_flag_bit
= NFS_STATE_RECLAIM_NOGRACE
,
6819 .recover_open
= nfs41_open_expired
,
6820 .recover_lock
= nfs41_lock_expired
,
6821 .establish_clid
= nfs41_init_clientid
,
6822 .get_clid_cred
= nfs4_get_exchange_id_cred
,
6824 #endif /* CONFIG_NFS_V4_1 */
6826 static const struct nfs4_state_maintenance_ops nfs40_state_renewal_ops
= {
6827 .sched_state_renewal
= nfs4_proc_async_renew
,
6828 .get_state_renewal_cred_locked
= nfs4_get_renew_cred_locked
,
6829 .renew_lease
= nfs4_proc_renew
,
6832 #if defined(CONFIG_NFS_V4_1)
6833 static const struct nfs4_state_maintenance_ops nfs41_state_renewal_ops
= {
6834 .sched_state_renewal
= nfs41_proc_async_sequence
,
6835 .get_state_renewal_cred_locked
= nfs4_get_machine_cred_locked
,
6836 .renew_lease
= nfs4_proc_sequence
,
6840 static const struct nfs4_minor_version_ops nfs_v4_0_minor_ops
= {
6842 .init_caps
= NFS_CAP_READDIRPLUS
6843 | NFS_CAP_ATOMIC_OPEN
6844 | NFS_CAP_CHANGE_ATTR
6845 | NFS_CAP_POSIX_LOCK
,
6846 .call_sync
= _nfs4_call_sync
,
6847 .match_stateid
= nfs4_match_stateid
,
6848 .find_root_sec
= nfs4_find_root_sec
,
6849 .reboot_recovery_ops
= &nfs40_reboot_recovery_ops
,
6850 .nograce_recovery_ops
= &nfs40_nograce_recovery_ops
,
6851 .state_renewal_ops
= &nfs40_state_renewal_ops
,
6854 #if defined(CONFIG_NFS_V4_1)
6855 static const struct nfs4_minor_version_ops nfs_v4_1_minor_ops
= {
6857 .init_caps
= NFS_CAP_READDIRPLUS
6858 | NFS_CAP_ATOMIC_OPEN
6859 | NFS_CAP_CHANGE_ATTR
6860 | NFS_CAP_POSIX_LOCK
6861 | NFS_CAP_STATEID_NFSV41
,
6862 .call_sync
= nfs4_call_sync_sequence
,
6863 .match_stateid
= nfs41_match_stateid
,
6864 .find_root_sec
= nfs41_find_root_sec
,
6865 .reboot_recovery_ops
= &nfs41_reboot_recovery_ops
,
6866 .nograce_recovery_ops
= &nfs41_nograce_recovery_ops
,
6867 .state_renewal_ops
= &nfs41_state_renewal_ops
,
6871 const struct nfs4_minor_version_ops
*nfs_v4_minor_ops
[] = {
6872 [0] = &nfs_v4_0_minor_ops
,
6873 #if defined(CONFIG_NFS_V4_1)
6874 [1] = &nfs_v4_1_minor_ops
,
6878 const struct inode_operations nfs4_dir_inode_operations
= {
6879 .create
= nfs_create
,
6880 .lookup
= nfs_lookup
,
6881 .atomic_open
= nfs_atomic_open
,
6883 .unlink
= nfs_unlink
,
6884 .symlink
= nfs_symlink
,
6888 .rename
= nfs_rename
,
6889 .permission
= nfs_permission
,
6890 .getattr
= nfs_getattr
,
6891 .setattr
= nfs_setattr
,
6892 .getxattr
= generic_getxattr
,
6893 .setxattr
= generic_setxattr
,
6894 .listxattr
= generic_listxattr
,
6895 .removexattr
= generic_removexattr
,
6898 static const struct inode_operations nfs4_file_inode_operations
= {
6899 .permission
= nfs_permission
,
6900 .getattr
= nfs_getattr
,
6901 .setattr
= nfs_setattr
,
6902 .getxattr
= generic_getxattr
,
6903 .setxattr
= generic_setxattr
,
6904 .listxattr
= generic_listxattr
,
6905 .removexattr
= generic_removexattr
,
6908 const struct nfs_rpc_ops nfs_v4_clientops
= {
6909 .version
= 4, /* protocol version */
6910 .dentry_ops
= &nfs4_dentry_operations
,
6911 .dir_inode_ops
= &nfs4_dir_inode_operations
,
6912 .file_inode_ops
= &nfs4_file_inode_operations
,
6913 .file_ops
= &nfs4_file_operations
,
6914 .getroot
= nfs4_proc_get_root
,
6915 .submount
= nfs4_submount
,
6916 .try_mount
= nfs4_try_mount
,
6917 .getattr
= nfs4_proc_getattr
,
6918 .setattr
= nfs4_proc_setattr
,
6919 .lookup
= nfs4_proc_lookup
,
6920 .access
= nfs4_proc_access
,
6921 .readlink
= nfs4_proc_readlink
,
6922 .create
= nfs4_proc_create
,
6923 .remove
= nfs4_proc_remove
,
6924 .unlink_setup
= nfs4_proc_unlink_setup
,
6925 .unlink_rpc_prepare
= nfs4_proc_unlink_rpc_prepare
,
6926 .unlink_done
= nfs4_proc_unlink_done
,
6927 .rename
= nfs4_proc_rename
,
6928 .rename_setup
= nfs4_proc_rename_setup
,
6929 .rename_rpc_prepare
= nfs4_proc_rename_rpc_prepare
,
6930 .rename_done
= nfs4_proc_rename_done
,
6931 .link
= nfs4_proc_link
,
6932 .symlink
= nfs4_proc_symlink
,
6933 .mkdir
= nfs4_proc_mkdir
,
6934 .rmdir
= nfs4_proc_remove
,
6935 .readdir
= nfs4_proc_readdir
,
6936 .mknod
= nfs4_proc_mknod
,
6937 .statfs
= nfs4_proc_statfs
,
6938 .fsinfo
= nfs4_proc_fsinfo
,
6939 .pathconf
= nfs4_proc_pathconf
,
6940 .set_capabilities
= nfs4_server_capabilities
,
6941 .decode_dirent
= nfs4_decode_dirent
,
6942 .read_setup
= nfs4_proc_read_setup
,
6943 .read_pageio_init
= pnfs_pageio_init_read
,
6944 .read_rpc_prepare
= nfs4_proc_read_rpc_prepare
,
6945 .read_done
= nfs4_read_done
,
6946 .write_setup
= nfs4_proc_write_setup
,
6947 .write_pageio_init
= pnfs_pageio_init_write
,
6948 .write_rpc_prepare
= nfs4_proc_write_rpc_prepare
,
6949 .write_done
= nfs4_write_done
,
6950 .commit_setup
= nfs4_proc_commit_setup
,
6951 .commit_rpc_prepare
= nfs4_proc_commit_rpc_prepare
,
6952 .commit_done
= nfs4_commit_done
,
6953 .lock
= nfs4_proc_lock
,
6954 .clear_acl_cache
= nfs4_zap_acl_attr
,
6955 .close_context
= nfs4_close_context
,
6956 .open_context
= nfs4_atomic_open
,
6957 .have_delegation
= nfs4_have_delegation
,
6958 .return_delegation
= nfs4_inode_return_delegation
,
6959 .alloc_client
= nfs4_alloc_client
,
6960 .init_client
= nfs4_init_client
,
6961 .free_client
= nfs4_free_client
,
6962 .create_server
= nfs4_create_server
,
6963 .clone_server
= nfs_clone_server
,
6966 static const struct xattr_handler nfs4_xattr_nfs4_acl_handler
= {
6967 .prefix
= XATTR_NAME_NFSV4_ACL
,
6968 .list
= nfs4_xattr_list_nfs4_acl
,
6969 .get
= nfs4_xattr_get_nfs4_acl
,
6970 .set
= nfs4_xattr_set_nfs4_acl
,
6973 const struct xattr_handler
*nfs4_xattr_handlers
[] = {
6974 &nfs4_xattr_nfs4_acl_handler
,