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 nfs4_schedule_stateid_recovery(server
, state
);
299 goto wait_on_recovery
;
300 case -NFS4ERR_DELEG_REVOKED
:
301 case -NFS4ERR_ADMIN_REVOKED
:
302 case -NFS4ERR_BAD_STATEID
:
305 nfs_remove_bad_delegation(state
->inode
);
306 nfs4_schedule_stateid_recovery(server
, state
);
307 goto wait_on_recovery
;
308 case -NFS4ERR_EXPIRED
:
310 nfs4_schedule_stateid_recovery(server
, state
);
311 case -NFS4ERR_STALE_STATEID
:
312 case -NFS4ERR_STALE_CLIENTID
:
313 nfs4_schedule_lease_recovery(clp
);
314 goto wait_on_recovery
;
315 #if defined(CONFIG_NFS_V4_1)
316 case -NFS4ERR_BADSESSION
:
317 case -NFS4ERR_BADSLOT
:
318 case -NFS4ERR_BAD_HIGH_SLOT
:
319 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
320 case -NFS4ERR_DEADSESSION
:
321 case -NFS4ERR_SEQ_FALSE_RETRY
:
322 case -NFS4ERR_SEQ_MISORDERED
:
323 dprintk("%s ERROR: %d Reset session\n", __func__
,
325 nfs4_schedule_session_recovery(clp
->cl_session
, errorcode
);
326 goto wait_on_recovery
;
327 #endif /* defined(CONFIG_NFS_V4_1) */
328 case -NFS4ERR_FILE_OPEN
:
329 if (exception
->timeout
> HZ
) {
330 /* We have retried a decent amount, time to
338 ret
= nfs4_delay(server
->client
, &exception
->timeout
);
341 case -NFS4ERR_RETRY_UNCACHED_REP
:
342 case -NFS4ERR_OLD_STATEID
:
343 exception
->retry
= 1;
345 case -NFS4ERR_BADOWNER
:
346 /* The following works around a Linux server bug! */
347 case -NFS4ERR_BADNAME
:
348 if (server
->caps
& NFS_CAP_UIDGID_NOMAP
) {
349 server
->caps
&= ~NFS_CAP_UIDGID_NOMAP
;
350 exception
->retry
= 1;
351 printk(KERN_WARNING
"NFS: v4 server %s "
352 "does not accept raw "
354 "Reenabling the idmapper.\n",
355 server
->nfs_client
->cl_hostname
);
358 /* We failed to handle the error */
359 return nfs4_map_errors(ret
);
361 ret
= nfs4_wait_clnt_recover(clp
);
363 exception
->retry
= 1;
368 static void do_renew_lease(struct nfs_client
*clp
, unsigned long timestamp
)
370 spin_lock(&clp
->cl_lock
);
371 if (time_before(clp
->cl_last_renewal
,timestamp
))
372 clp
->cl_last_renewal
= timestamp
;
373 spin_unlock(&clp
->cl_lock
);
376 static void renew_lease(const struct nfs_server
*server
, unsigned long timestamp
)
378 do_renew_lease(server
->nfs_client
, timestamp
);
381 #if defined(CONFIG_NFS_V4_1)
383 static void nfs41_sequence_free_slot(struct nfs4_sequence_res
*res
)
385 struct nfs4_session
*session
;
386 struct nfs4_slot_table
*tbl
;
387 bool send_new_highest_used_slotid
= false;
390 /* just wake up the next guy waiting since
391 * we may have not consumed a slot after all */
392 dprintk("%s: No slot\n", __func__
);
395 tbl
= res
->sr_slot
->table
;
396 session
= tbl
->session
;
398 spin_lock(&tbl
->slot_tbl_lock
);
399 /* Be nice to the server: try to ensure that the last transmitted
400 * value for highest_user_slotid <= target_highest_slotid
402 if (tbl
->highest_used_slotid
> tbl
->target_highest_slotid
)
403 send_new_highest_used_slotid
= true;
405 if (nfs41_wake_and_assign_slot(tbl
, res
->sr_slot
)) {
406 send_new_highest_used_slotid
= false;
409 nfs4_free_slot(tbl
, res
->sr_slot
);
411 if (tbl
->highest_used_slotid
!= NFS4_NO_SLOT
)
412 send_new_highest_used_slotid
= false;
414 spin_unlock(&tbl
->slot_tbl_lock
);
416 if (send_new_highest_used_slotid
)
417 nfs41_server_notify_highest_slotid_update(session
->clp
);
420 static int nfs41_sequence_done(struct rpc_task
*task
, struct nfs4_sequence_res
*res
)
422 struct nfs4_session
*session
;
423 struct nfs4_slot
*slot
;
424 struct nfs_client
*clp
;
425 bool interrupted
= false;
428 /* don't increment the sequence number if the task wasn't sent */
429 if (!RPC_WAS_SENT(task
))
433 session
= slot
->table
->session
;
435 if (slot
->interrupted
) {
436 slot
->interrupted
= 0;
440 /* Check the SEQUENCE operation status */
441 switch (res
->sr_status
) {
443 /* Update the slot's sequence and clientid lease timer */
446 do_renew_lease(clp
, res
->sr_timestamp
);
447 /* Check sequence flags */
448 if (res
->sr_status_flags
!= 0)
449 nfs4_schedule_lease_recovery(clp
);
450 nfs41_update_target_slotid(slot
->table
, slot
, res
);
454 * sr_status remains 1 if an RPC level error occurred.
455 * The server may or may not have processed the sequence
457 * Mark the slot as having hosted an interrupted RPC call.
459 slot
->interrupted
= 1;
462 /* The server detected a resend of the RPC call and
463 * returned NFS4ERR_DELAY as per Section 2.10.6.2
466 dprintk("%s: slot=%u seq=%u: Operation in progress\n",
471 case -NFS4ERR_BADSLOT
:
473 * The slot id we used was probably retired. Try again
474 * using a different slot id.
477 case -NFS4ERR_SEQ_MISORDERED
:
479 * Was the last operation on this sequence interrupted?
480 * If so, retry after bumping the sequence number.
487 * Could this slot have been previously retired?
488 * If so, then the server may be expecting seq_nr = 1!
490 if (slot
->seq_nr
!= 1) {
495 case -NFS4ERR_SEQ_FALSE_RETRY
:
499 /* Just update the slot sequence no. */
503 /* The session may be reset by one of the error handlers. */
504 dprintk("%s: Error %d free the slot \n", __func__
, res
->sr_status
);
505 nfs41_sequence_free_slot(res
);
508 if (rpc_restart_call_prepare(task
)) {
514 if (!rpc_restart_call(task
))
516 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
520 static int nfs4_sequence_done(struct rpc_task
*task
,
521 struct nfs4_sequence_res
*res
)
523 if (res
->sr_slot
== NULL
)
525 return nfs41_sequence_done(task
, res
);
528 static void nfs41_init_sequence(struct nfs4_sequence_args
*args
,
529 struct nfs4_sequence_res
*res
, int cache_reply
)
531 args
->sa_slot
= NULL
;
532 args
->sa_cache_this
= 0;
533 args
->sa_privileged
= 0;
535 args
->sa_cache_this
= 1;
539 static void nfs4_set_sequence_privileged(struct nfs4_sequence_args
*args
)
541 args
->sa_privileged
= 1;
544 int nfs41_setup_sequence(struct nfs4_session
*session
,
545 struct nfs4_sequence_args
*args
,
546 struct nfs4_sequence_res
*res
,
547 struct rpc_task
*task
)
549 struct nfs4_slot
*slot
;
550 struct nfs4_slot_table
*tbl
;
552 dprintk("--> %s\n", __func__
);
553 /* slot already allocated? */
554 if (res
->sr_slot
!= NULL
)
557 tbl
= &session
->fc_slot_table
;
559 task
->tk_timeout
= 0;
561 spin_lock(&tbl
->slot_tbl_lock
);
562 if (test_bit(NFS4_SESSION_DRAINING
, &session
->session_state
) &&
563 !args
->sa_privileged
) {
564 /* The state manager will wait until the slot table is empty */
565 dprintk("%s session is draining\n", __func__
);
569 slot
= nfs4_alloc_slot(tbl
);
571 /* If out of memory, try again in 1/4 second */
572 if (slot
== ERR_PTR(-ENOMEM
))
573 task
->tk_timeout
= HZ
>> 2;
574 dprintk("<-- %s: no free slots\n", __func__
);
577 spin_unlock(&tbl
->slot_tbl_lock
);
579 args
->sa_slot
= slot
;
581 dprintk("<-- %s slotid=%d seqid=%d\n", __func__
,
582 slot
->slot_nr
, slot
->seq_nr
);
585 res
->sr_timestamp
= jiffies
;
586 res
->sr_status_flags
= 0;
588 * sr_status is only set in decode_sequence, and so will remain
589 * set to 1 if an rpc level failure occurs.
593 rpc_call_start(task
);
596 /* Privileged tasks are queued with top priority */
597 if (args
->sa_privileged
)
598 rpc_sleep_on_priority(&tbl
->slot_tbl_waitq
, task
,
599 NULL
, RPC_PRIORITY_PRIVILEGED
);
601 rpc_sleep_on(&tbl
->slot_tbl_waitq
, task
, NULL
);
602 spin_unlock(&tbl
->slot_tbl_lock
);
605 EXPORT_SYMBOL_GPL(nfs41_setup_sequence
);
607 int nfs4_setup_sequence(const struct nfs_server
*server
,
608 struct nfs4_sequence_args
*args
,
609 struct nfs4_sequence_res
*res
,
610 struct rpc_task
*task
)
612 struct nfs4_session
*session
= nfs4_get_session(server
);
615 if (session
== NULL
) {
616 rpc_call_start(task
);
620 dprintk("--> %s clp %p session %p sr_slot %d\n",
621 __func__
, session
->clp
, session
, res
->sr_slot
?
622 res
->sr_slot
->slot_nr
: -1);
624 ret
= nfs41_setup_sequence(session
, args
, res
, task
);
626 dprintk("<-- %s status=%d\n", __func__
, ret
);
630 struct nfs41_call_sync_data
{
631 const struct nfs_server
*seq_server
;
632 struct nfs4_sequence_args
*seq_args
;
633 struct nfs4_sequence_res
*seq_res
;
636 static void nfs41_call_sync_prepare(struct rpc_task
*task
, void *calldata
)
638 struct nfs41_call_sync_data
*data
= calldata
;
639 struct nfs4_session
*session
= nfs4_get_session(data
->seq_server
);
641 dprintk("--> %s data->seq_server %p\n", __func__
, data
->seq_server
);
643 nfs41_setup_sequence(session
, data
->seq_args
, data
->seq_res
, task
);
646 static void nfs41_call_sync_done(struct rpc_task
*task
, void *calldata
)
648 struct nfs41_call_sync_data
*data
= calldata
;
650 nfs41_sequence_done(task
, data
->seq_res
);
653 static const struct rpc_call_ops nfs41_call_sync_ops
= {
654 .rpc_call_prepare
= nfs41_call_sync_prepare
,
655 .rpc_call_done
= nfs41_call_sync_done
,
658 static int nfs4_call_sync_sequence(struct rpc_clnt
*clnt
,
659 struct nfs_server
*server
,
660 struct rpc_message
*msg
,
661 struct nfs4_sequence_args
*args
,
662 struct nfs4_sequence_res
*res
)
665 struct rpc_task
*task
;
666 struct nfs41_call_sync_data data
= {
667 .seq_server
= server
,
671 struct rpc_task_setup task_setup
= {
674 .callback_ops
= &nfs41_call_sync_ops
,
675 .callback_data
= &data
678 task
= rpc_run_task(&task_setup
);
682 ret
= task
->tk_status
;
690 void nfs41_init_sequence(struct nfs4_sequence_args
*args
,
691 struct nfs4_sequence_res
*res
, int cache_reply
)
695 static void nfs4_set_sequence_privileged(struct nfs4_sequence_args
*args
)
700 static int nfs4_sequence_done(struct rpc_task
*task
,
701 struct nfs4_sequence_res
*res
)
705 #endif /* CONFIG_NFS_V4_1 */
708 int _nfs4_call_sync(struct rpc_clnt
*clnt
,
709 struct nfs_server
*server
,
710 struct rpc_message
*msg
,
711 struct nfs4_sequence_args
*args
,
712 struct nfs4_sequence_res
*res
)
714 return rpc_call_sync(clnt
, msg
, 0);
718 int nfs4_call_sync(struct rpc_clnt
*clnt
,
719 struct nfs_server
*server
,
720 struct rpc_message
*msg
,
721 struct nfs4_sequence_args
*args
,
722 struct nfs4_sequence_res
*res
,
725 nfs41_init_sequence(args
, res
, cache_reply
);
726 return server
->nfs_client
->cl_mvops
->call_sync(clnt
, server
, msg
,
730 static void update_changeattr(struct inode
*dir
, struct nfs4_change_info
*cinfo
)
732 struct nfs_inode
*nfsi
= NFS_I(dir
);
734 spin_lock(&dir
->i_lock
);
735 nfsi
->cache_validity
|= NFS_INO_INVALID_ATTR
|NFS_INO_INVALID_DATA
;
736 if (!cinfo
->atomic
|| cinfo
->before
!= dir
->i_version
)
737 nfs_force_lookup_revalidate(dir
);
738 dir
->i_version
= cinfo
->after
;
739 nfs_fscache_invalidate(dir
);
740 spin_unlock(&dir
->i_lock
);
743 struct nfs4_opendata
{
745 struct nfs_openargs o_arg
;
746 struct nfs_openres o_res
;
747 struct nfs_open_confirmargs c_arg
;
748 struct nfs_open_confirmres c_res
;
749 struct nfs4_string owner_name
;
750 struct nfs4_string group_name
;
751 struct nfs_fattr f_attr
;
753 struct dentry
*dentry
;
754 struct nfs4_state_owner
*owner
;
755 struct nfs4_state
*state
;
757 unsigned long timestamp
;
758 unsigned int rpc_done
: 1;
764 static void nfs4_init_opendata_res(struct nfs4_opendata
*p
)
766 p
->o_res
.f_attr
= &p
->f_attr
;
767 p
->o_res
.seqid
= p
->o_arg
.seqid
;
768 p
->c_res
.seqid
= p
->c_arg
.seqid
;
769 p
->o_res
.server
= p
->o_arg
.server
;
770 p
->o_res
.access_request
= p
->o_arg
.access
;
771 nfs_fattr_init(&p
->f_attr
);
772 nfs_fattr_init_names(&p
->f_attr
, &p
->owner_name
, &p
->group_name
);
775 static struct nfs4_opendata
*nfs4_opendata_alloc(struct dentry
*dentry
,
776 struct nfs4_state_owner
*sp
, fmode_t fmode
, int flags
,
777 const struct iattr
*attrs
,
780 struct dentry
*parent
= dget_parent(dentry
);
781 struct inode
*dir
= parent
->d_inode
;
782 struct nfs_server
*server
= NFS_SERVER(dir
);
783 struct nfs4_opendata
*p
;
785 p
= kzalloc(sizeof(*p
), gfp_mask
);
788 p
->o_arg
.seqid
= nfs_alloc_seqid(&sp
->so_seqid
, gfp_mask
);
789 if (p
->o_arg
.seqid
== NULL
)
791 nfs_sb_active(dentry
->d_sb
);
792 p
->dentry
= dget(dentry
);
795 atomic_inc(&sp
->so_count
);
796 p
->o_arg
.fh
= NFS_FH(dir
);
797 p
->o_arg
.open_flags
= flags
;
798 p
->o_arg
.fmode
= fmode
& (FMODE_READ
|FMODE_WRITE
);
799 /* don't put an ACCESS op in OPEN compound if O_EXCL, because ACCESS
800 * will return permission denied for all bits until close */
801 if (!(flags
& O_EXCL
)) {
802 /* ask server to check for all possible rights as results
804 p
->o_arg
.access
= NFS4_ACCESS_READ
| NFS4_ACCESS_MODIFY
|
805 NFS4_ACCESS_EXTEND
| NFS4_ACCESS_EXECUTE
;
807 p
->o_arg
.clientid
= server
->nfs_client
->cl_clientid
;
808 p
->o_arg
.id
.create_time
= ktime_to_ns(sp
->so_seqid
.create_time
);
809 p
->o_arg
.id
.uniquifier
= sp
->so_seqid
.owner_id
;
810 p
->o_arg
.name
= &dentry
->d_name
;
811 p
->o_arg
.server
= server
;
812 p
->o_arg
.bitmask
= server
->attr_bitmask
;
813 p
->o_arg
.open_bitmap
= &nfs4_fattr_bitmap
[0];
814 p
->o_arg
.claim
= NFS4_OPEN_CLAIM_NULL
;
815 if (attrs
!= NULL
&& attrs
->ia_valid
!= 0) {
818 p
->o_arg
.u
.attrs
= &p
->attrs
;
819 memcpy(&p
->attrs
, attrs
, sizeof(p
->attrs
));
822 verf
[1] = current
->pid
;
823 memcpy(p
->o_arg
.u
.verifier
.data
, verf
,
824 sizeof(p
->o_arg
.u
.verifier
.data
));
826 p
->c_arg
.fh
= &p
->o_res
.fh
;
827 p
->c_arg
.stateid
= &p
->o_res
.stateid
;
828 p
->c_arg
.seqid
= p
->o_arg
.seqid
;
829 nfs4_init_opendata_res(p
);
839 static void nfs4_opendata_free(struct kref
*kref
)
841 struct nfs4_opendata
*p
= container_of(kref
,
842 struct nfs4_opendata
, kref
);
843 struct super_block
*sb
= p
->dentry
->d_sb
;
845 nfs_free_seqid(p
->o_arg
.seqid
);
846 if (p
->state
!= NULL
)
847 nfs4_put_open_state(p
->state
);
848 nfs4_put_state_owner(p
->owner
);
852 nfs_fattr_free_names(&p
->f_attr
);
856 static void nfs4_opendata_put(struct nfs4_opendata
*p
)
859 kref_put(&p
->kref
, nfs4_opendata_free
);
862 static int nfs4_wait_for_completion_rpc_task(struct rpc_task
*task
)
866 ret
= rpc_wait_for_completion_task(task
);
870 static int can_open_cached(struct nfs4_state
*state
, fmode_t mode
, int open_mode
)
874 if (open_mode
& (O_EXCL
|O_TRUNC
))
876 switch (mode
& (FMODE_READ
|FMODE_WRITE
)) {
878 ret
|= test_bit(NFS_O_RDONLY_STATE
, &state
->flags
) != 0
879 && state
->n_rdonly
!= 0;
882 ret
|= test_bit(NFS_O_WRONLY_STATE
, &state
->flags
) != 0
883 && state
->n_wronly
!= 0;
885 case FMODE_READ
|FMODE_WRITE
:
886 ret
|= test_bit(NFS_O_RDWR_STATE
, &state
->flags
) != 0
887 && state
->n_rdwr
!= 0;
893 static int can_open_delegated(struct nfs_delegation
*delegation
, fmode_t fmode
)
895 if (delegation
== NULL
)
897 if ((delegation
->type
& fmode
) != fmode
)
899 if (test_bit(NFS_DELEGATION_NEED_RECLAIM
, &delegation
->flags
))
901 if (test_bit(NFS_DELEGATION_RETURNING
, &delegation
->flags
))
903 nfs_mark_delegation_referenced(delegation
);
907 static void update_open_stateflags(struct nfs4_state
*state
, fmode_t fmode
)
916 case FMODE_READ
|FMODE_WRITE
:
919 nfs4_state_set_mode_locked(state
, state
->state
| fmode
);
922 static void nfs_set_open_stateid_locked(struct nfs4_state
*state
, nfs4_stateid
*stateid
, fmode_t fmode
)
924 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0)
925 nfs4_stateid_copy(&state
->stateid
, stateid
);
926 nfs4_stateid_copy(&state
->open_stateid
, stateid
);
929 set_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
932 set_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
934 case FMODE_READ
|FMODE_WRITE
:
935 set_bit(NFS_O_RDWR_STATE
, &state
->flags
);
939 static void nfs_set_open_stateid(struct nfs4_state
*state
, nfs4_stateid
*stateid
, fmode_t fmode
)
941 write_seqlock(&state
->seqlock
);
942 nfs_set_open_stateid_locked(state
, stateid
, fmode
);
943 write_sequnlock(&state
->seqlock
);
946 static void __update_open_stateid(struct nfs4_state
*state
, nfs4_stateid
*open_stateid
, const nfs4_stateid
*deleg_stateid
, fmode_t fmode
)
949 * Protect the call to nfs4_state_set_mode_locked and
950 * serialise the stateid update
952 write_seqlock(&state
->seqlock
);
953 if (deleg_stateid
!= NULL
) {
954 nfs4_stateid_copy(&state
->stateid
, deleg_stateid
);
955 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
957 if (open_stateid
!= NULL
)
958 nfs_set_open_stateid_locked(state
, open_stateid
, fmode
);
959 write_sequnlock(&state
->seqlock
);
960 spin_lock(&state
->owner
->so_lock
);
961 update_open_stateflags(state
, fmode
);
962 spin_unlock(&state
->owner
->so_lock
);
965 static int update_open_stateid(struct nfs4_state
*state
, nfs4_stateid
*open_stateid
, nfs4_stateid
*delegation
, fmode_t fmode
)
967 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
968 struct nfs_delegation
*deleg_cur
;
971 fmode
&= (FMODE_READ
|FMODE_WRITE
);
974 deleg_cur
= rcu_dereference(nfsi
->delegation
);
975 if (deleg_cur
== NULL
)
978 spin_lock(&deleg_cur
->lock
);
979 if (nfsi
->delegation
!= deleg_cur
||
980 test_bit(NFS_DELEGATION_RETURNING
, &deleg_cur
->flags
) ||
981 (deleg_cur
->type
& fmode
) != fmode
)
982 goto no_delegation_unlock
;
984 if (delegation
== NULL
)
985 delegation
= &deleg_cur
->stateid
;
986 else if (!nfs4_stateid_match(&deleg_cur
->stateid
, delegation
))
987 goto no_delegation_unlock
;
989 nfs_mark_delegation_referenced(deleg_cur
);
990 __update_open_stateid(state
, open_stateid
, &deleg_cur
->stateid
, fmode
);
992 no_delegation_unlock
:
993 spin_unlock(&deleg_cur
->lock
);
997 if (!ret
&& open_stateid
!= NULL
) {
998 __update_open_stateid(state
, open_stateid
, NULL
, fmode
);
1006 static void nfs4_return_incompatible_delegation(struct inode
*inode
, fmode_t fmode
)
1008 struct nfs_delegation
*delegation
;
1011 delegation
= rcu_dereference(NFS_I(inode
)->delegation
);
1012 if (delegation
== NULL
|| (delegation
->type
& fmode
) == fmode
) {
1017 nfs4_inode_return_delegation(inode
);
1020 static struct nfs4_state
*nfs4_try_open_cached(struct nfs4_opendata
*opendata
)
1022 struct nfs4_state
*state
= opendata
->state
;
1023 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
1024 struct nfs_delegation
*delegation
;
1025 int open_mode
= opendata
->o_arg
.open_flags
& (O_EXCL
|O_TRUNC
);
1026 fmode_t fmode
= opendata
->o_arg
.fmode
;
1027 nfs4_stateid stateid
;
1031 if (can_open_cached(state
, fmode
, open_mode
)) {
1032 spin_lock(&state
->owner
->so_lock
);
1033 if (can_open_cached(state
, fmode
, open_mode
)) {
1034 update_open_stateflags(state
, fmode
);
1035 spin_unlock(&state
->owner
->so_lock
);
1036 goto out_return_state
;
1038 spin_unlock(&state
->owner
->so_lock
);
1041 delegation
= rcu_dereference(nfsi
->delegation
);
1042 if (!can_open_delegated(delegation
, fmode
)) {
1046 /* Save the delegation */
1047 nfs4_stateid_copy(&stateid
, &delegation
->stateid
);
1049 ret
= nfs_may_open(state
->inode
, state
->owner
->so_cred
, open_mode
);
1054 /* Try to update the stateid using the delegation */
1055 if (update_open_stateid(state
, NULL
, &stateid
, fmode
))
1056 goto out_return_state
;
1059 return ERR_PTR(ret
);
1061 atomic_inc(&state
->count
);
1066 nfs4_opendata_check_deleg(struct nfs4_opendata
*data
, struct nfs4_state
*state
)
1068 struct nfs_client
*clp
= NFS_SERVER(state
->inode
)->nfs_client
;
1069 struct nfs_delegation
*delegation
;
1070 int delegation_flags
= 0;
1073 delegation
= rcu_dereference(NFS_I(state
->inode
)->delegation
);
1075 delegation_flags
= delegation
->flags
;
1077 if (data
->o_arg
.claim
== NFS4_OPEN_CLAIM_DELEGATE_CUR
) {
1078 pr_err_ratelimited("NFS: Broken NFSv4 server %s is "
1079 "returning a delegation for "
1080 "OPEN(CLAIM_DELEGATE_CUR)\n",
1082 } else if ((delegation_flags
& 1UL<<NFS_DELEGATION_NEED_RECLAIM
) == 0)
1083 nfs_inode_set_delegation(state
->inode
,
1084 data
->owner
->so_cred
,
1087 nfs_inode_reclaim_delegation(state
->inode
,
1088 data
->owner
->so_cred
,
1093 * Check the inode attributes against the CLAIM_PREVIOUS returned attributes
1094 * and update the nfs4_state.
1096 static struct nfs4_state
*
1097 _nfs4_opendata_reclaim_to_nfs4_state(struct nfs4_opendata
*data
)
1099 struct inode
*inode
= data
->state
->inode
;
1100 struct nfs4_state
*state
= data
->state
;
1103 if (!data
->rpc_done
) {
1104 ret
= data
->rpc_status
;
1109 if (!(data
->f_attr
.valid
& NFS_ATTR_FATTR_TYPE
) ||
1110 !(data
->f_attr
.valid
& NFS_ATTR_FATTR_FILEID
) ||
1111 !(data
->f_attr
.valid
& NFS_ATTR_FATTR_CHANGE
))
1115 state
= nfs4_get_open_state(inode
, data
->owner
);
1119 ret
= nfs_refresh_inode(inode
, &data
->f_attr
);
1123 if (data
->o_res
.delegation_type
!= 0)
1124 nfs4_opendata_check_deleg(data
, state
);
1125 update_open_stateid(state
, &data
->o_res
.stateid
, NULL
,
1130 return ERR_PTR(ret
);
1134 static struct nfs4_state
*
1135 _nfs4_opendata_to_nfs4_state(struct nfs4_opendata
*data
)
1137 struct inode
*inode
;
1138 struct nfs4_state
*state
= NULL
;
1141 if (!data
->rpc_done
) {
1142 state
= nfs4_try_open_cached(data
);
1147 if (!(data
->f_attr
.valid
& NFS_ATTR_FATTR
))
1149 inode
= nfs_fhget(data
->dir
->d_sb
, &data
->o_res
.fh
, &data
->f_attr
);
1150 ret
= PTR_ERR(inode
);
1154 state
= nfs4_get_open_state(inode
, data
->owner
);
1157 if (data
->o_res
.delegation_type
!= 0)
1158 nfs4_opendata_check_deleg(data
, state
);
1159 update_open_stateid(state
, &data
->o_res
.stateid
, NULL
,
1163 nfs_release_seqid(data
->o_arg
.seqid
);
1168 return ERR_PTR(ret
);
1171 static struct nfs4_state
*
1172 nfs4_opendata_to_nfs4_state(struct nfs4_opendata
*data
)
1174 if (data
->o_arg
.claim
== NFS4_OPEN_CLAIM_PREVIOUS
)
1175 return _nfs4_opendata_reclaim_to_nfs4_state(data
);
1176 return _nfs4_opendata_to_nfs4_state(data
);
1179 static struct nfs_open_context
*nfs4_state_find_open_context(struct nfs4_state
*state
)
1181 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
1182 struct nfs_open_context
*ctx
;
1184 spin_lock(&state
->inode
->i_lock
);
1185 list_for_each_entry(ctx
, &nfsi
->open_files
, list
) {
1186 if (ctx
->state
!= state
)
1188 get_nfs_open_context(ctx
);
1189 spin_unlock(&state
->inode
->i_lock
);
1192 spin_unlock(&state
->inode
->i_lock
);
1193 return ERR_PTR(-ENOENT
);
1196 static struct nfs4_opendata
*nfs4_open_recoverdata_alloc(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1198 struct nfs4_opendata
*opendata
;
1200 opendata
= nfs4_opendata_alloc(ctx
->dentry
, state
->owner
, 0, 0, NULL
, GFP_NOFS
);
1201 if (opendata
== NULL
)
1202 return ERR_PTR(-ENOMEM
);
1203 opendata
->state
= state
;
1204 atomic_inc(&state
->count
);
1208 static int nfs4_open_recover_helper(struct nfs4_opendata
*opendata
, fmode_t fmode
, struct nfs4_state
**res
)
1210 struct nfs4_state
*newstate
;
1213 opendata
->o_arg
.open_flags
= 0;
1214 opendata
->o_arg
.fmode
= fmode
;
1215 memset(&opendata
->o_res
, 0, sizeof(opendata
->o_res
));
1216 memset(&opendata
->c_res
, 0, sizeof(opendata
->c_res
));
1217 nfs4_init_opendata_res(opendata
);
1218 ret
= _nfs4_recover_proc_open(opendata
);
1221 newstate
= nfs4_opendata_to_nfs4_state(opendata
);
1222 if (IS_ERR(newstate
))
1223 return PTR_ERR(newstate
);
1224 nfs4_close_state(newstate
, fmode
);
1229 static int nfs4_open_recover(struct nfs4_opendata
*opendata
, struct nfs4_state
*state
)
1231 struct nfs4_state
*newstate
;
1234 /* memory barrier prior to reading state->n_* */
1235 clear_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1237 if (state
->n_rdwr
!= 0) {
1238 clear_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1239 ret
= nfs4_open_recover_helper(opendata
, FMODE_READ
|FMODE_WRITE
, &newstate
);
1242 if (newstate
!= state
)
1245 if (state
->n_wronly
!= 0) {
1246 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1247 ret
= nfs4_open_recover_helper(opendata
, FMODE_WRITE
, &newstate
);
1250 if (newstate
!= state
)
1253 if (state
->n_rdonly
!= 0) {
1254 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1255 ret
= nfs4_open_recover_helper(opendata
, FMODE_READ
, &newstate
);
1258 if (newstate
!= state
)
1262 * We may have performed cached opens for all three recoveries.
1263 * Check if we need to update the current stateid.
1265 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0 &&
1266 !nfs4_stateid_match(&state
->stateid
, &state
->open_stateid
)) {
1267 write_seqlock(&state
->seqlock
);
1268 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0)
1269 nfs4_stateid_copy(&state
->stateid
, &state
->open_stateid
);
1270 write_sequnlock(&state
->seqlock
);
1277 * reclaim state on the server after a reboot.
1279 static int _nfs4_do_open_reclaim(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1281 struct nfs_delegation
*delegation
;
1282 struct nfs4_opendata
*opendata
;
1283 fmode_t delegation_type
= 0;
1286 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
);
1287 if (IS_ERR(opendata
))
1288 return PTR_ERR(opendata
);
1289 opendata
->o_arg
.claim
= NFS4_OPEN_CLAIM_PREVIOUS
;
1290 opendata
->o_arg
.fh
= NFS_FH(state
->inode
);
1292 delegation
= rcu_dereference(NFS_I(state
->inode
)->delegation
);
1293 if (delegation
!= NULL
&& test_bit(NFS_DELEGATION_NEED_RECLAIM
, &delegation
->flags
) != 0)
1294 delegation_type
= delegation
->type
;
1296 opendata
->o_arg
.u
.delegation_type
= delegation_type
;
1297 status
= nfs4_open_recover(opendata
, state
);
1298 nfs4_opendata_put(opendata
);
1302 static int nfs4_do_open_reclaim(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1304 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1305 struct nfs4_exception exception
= { };
1308 err
= _nfs4_do_open_reclaim(ctx
, state
);
1309 if (err
!= -NFS4ERR_DELAY
)
1311 nfs4_handle_exception(server
, err
, &exception
);
1312 } while (exception
.retry
);
1316 static int nfs4_open_reclaim(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
1318 struct nfs_open_context
*ctx
;
1321 ctx
= nfs4_state_find_open_context(state
);
1323 return PTR_ERR(ctx
);
1324 ret
= nfs4_do_open_reclaim(ctx
, state
);
1325 put_nfs_open_context(ctx
);
1329 static int _nfs4_open_delegation_recall(struct nfs_open_context
*ctx
, struct nfs4_state
*state
, const nfs4_stateid
*stateid
)
1331 struct nfs4_opendata
*opendata
;
1334 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
);
1335 if (IS_ERR(opendata
))
1336 return PTR_ERR(opendata
);
1337 opendata
->o_arg
.claim
= NFS4_OPEN_CLAIM_DELEGATE_CUR
;
1338 nfs4_stateid_copy(&opendata
->o_arg
.u
.delegation
, stateid
);
1339 ret
= nfs4_open_recover(opendata
, state
);
1340 nfs4_opendata_put(opendata
);
1344 int nfs4_open_delegation_recall(struct nfs_open_context
*ctx
, struct nfs4_state
*state
, const nfs4_stateid
*stateid
)
1346 struct nfs4_exception exception
= { };
1347 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1350 err
= _nfs4_open_delegation_recall(ctx
, state
, stateid
);
1356 case -NFS4ERR_BADSESSION
:
1357 case -NFS4ERR_BADSLOT
:
1358 case -NFS4ERR_BAD_HIGH_SLOT
:
1359 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
1360 case -NFS4ERR_DEADSESSION
:
1361 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1362 nfs4_schedule_session_recovery(server
->nfs_client
->cl_session
, err
);
1365 case -NFS4ERR_STALE_CLIENTID
:
1366 case -NFS4ERR_STALE_STATEID
:
1367 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1368 case -NFS4ERR_EXPIRED
:
1369 /* Don't recall a delegation if it was lost */
1370 nfs4_schedule_lease_recovery(server
->nfs_client
);
1373 case -NFS4ERR_DELEG_REVOKED
:
1374 case -NFS4ERR_ADMIN_REVOKED
:
1375 case -NFS4ERR_BAD_STATEID
:
1376 nfs_inode_find_state_and_recover(state
->inode
,
1378 nfs4_schedule_stateid_recovery(server
, state
);
1383 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1384 err
= nfs4_handle_exception(server
, err
, &exception
);
1385 } while (exception
.retry
);
1390 static void nfs4_open_confirm_done(struct rpc_task
*task
, void *calldata
)
1392 struct nfs4_opendata
*data
= calldata
;
1394 data
->rpc_status
= task
->tk_status
;
1395 if (data
->rpc_status
== 0) {
1396 nfs4_stateid_copy(&data
->o_res
.stateid
, &data
->c_res
.stateid
);
1397 nfs_confirm_seqid(&data
->owner
->so_seqid
, 0);
1398 renew_lease(data
->o_res
.server
, data
->timestamp
);
1403 static void nfs4_open_confirm_release(void *calldata
)
1405 struct nfs4_opendata
*data
= calldata
;
1406 struct nfs4_state
*state
= NULL
;
1408 /* If this request hasn't been cancelled, do nothing */
1409 if (data
->cancelled
== 0)
1411 /* In case of error, no cleanup! */
1412 if (!data
->rpc_done
)
1414 state
= nfs4_opendata_to_nfs4_state(data
);
1416 nfs4_close_state(state
, data
->o_arg
.fmode
);
1418 nfs4_opendata_put(data
);
1421 static const struct rpc_call_ops nfs4_open_confirm_ops
= {
1422 .rpc_call_done
= nfs4_open_confirm_done
,
1423 .rpc_release
= nfs4_open_confirm_release
,
1427 * Note: On error, nfs4_proc_open_confirm will free the struct nfs4_opendata
1429 static int _nfs4_proc_open_confirm(struct nfs4_opendata
*data
)
1431 struct nfs_server
*server
= NFS_SERVER(data
->dir
->d_inode
);
1432 struct rpc_task
*task
;
1433 struct rpc_message msg
= {
1434 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_CONFIRM
],
1435 .rpc_argp
= &data
->c_arg
,
1436 .rpc_resp
= &data
->c_res
,
1437 .rpc_cred
= data
->owner
->so_cred
,
1439 struct rpc_task_setup task_setup_data
= {
1440 .rpc_client
= server
->client
,
1441 .rpc_message
= &msg
,
1442 .callback_ops
= &nfs4_open_confirm_ops
,
1443 .callback_data
= data
,
1444 .workqueue
= nfsiod_workqueue
,
1445 .flags
= RPC_TASK_ASYNC
,
1449 kref_get(&data
->kref
);
1451 data
->rpc_status
= 0;
1452 data
->timestamp
= jiffies
;
1453 task
= rpc_run_task(&task_setup_data
);
1455 return PTR_ERR(task
);
1456 status
= nfs4_wait_for_completion_rpc_task(task
);
1458 data
->cancelled
= 1;
1461 status
= data
->rpc_status
;
1466 static void nfs4_open_prepare(struct rpc_task
*task
, void *calldata
)
1468 struct nfs4_opendata
*data
= calldata
;
1469 struct nfs4_state_owner
*sp
= data
->owner
;
1471 if (nfs_wait_on_sequence(data
->o_arg
.seqid
, task
) != 0)
1474 * Check if we still need to send an OPEN call, or if we can use
1475 * a delegation instead.
1477 if (data
->state
!= NULL
) {
1478 struct nfs_delegation
*delegation
;
1480 if (can_open_cached(data
->state
, data
->o_arg
.fmode
, data
->o_arg
.open_flags
))
1483 delegation
= rcu_dereference(NFS_I(data
->state
->inode
)->delegation
);
1484 if (data
->o_arg
.claim
!= NFS4_OPEN_CLAIM_DELEGATE_CUR
&&
1485 can_open_delegated(delegation
, data
->o_arg
.fmode
))
1486 goto unlock_no_action
;
1489 /* Update client id. */
1490 data
->o_arg
.clientid
= sp
->so_server
->nfs_client
->cl_clientid
;
1491 if (data
->o_arg
.claim
== NFS4_OPEN_CLAIM_PREVIOUS
) {
1492 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_NOATTR
];
1493 data
->o_arg
.open_bitmap
= &nfs4_open_noattr_bitmap
[0];
1494 nfs_copy_fh(&data
->o_res
.fh
, data
->o_arg
.fh
);
1496 data
->timestamp
= jiffies
;
1497 if (nfs4_setup_sequence(data
->o_arg
.server
,
1498 &data
->o_arg
.seq_args
,
1499 &data
->o_res
.seq_res
,
1501 nfs_release_seqid(data
->o_arg
.seqid
);
1506 task
->tk_action
= NULL
;
1508 nfs4_sequence_done(task
, &data
->o_res
.seq_res
);
1511 static void nfs4_open_done(struct rpc_task
*task
, void *calldata
)
1513 struct nfs4_opendata
*data
= calldata
;
1515 data
->rpc_status
= task
->tk_status
;
1517 if (!nfs4_sequence_done(task
, &data
->o_res
.seq_res
))
1520 if (task
->tk_status
== 0) {
1521 if (data
->o_res
.f_attr
->valid
& NFS_ATTR_FATTR_TYPE
) {
1522 switch (data
->o_res
.f_attr
->mode
& S_IFMT
) {
1526 data
->rpc_status
= -ELOOP
;
1529 data
->rpc_status
= -EISDIR
;
1532 data
->rpc_status
= -ENOTDIR
;
1535 renew_lease(data
->o_res
.server
, data
->timestamp
);
1536 if (!(data
->o_res
.rflags
& NFS4_OPEN_RESULT_CONFIRM
))
1537 nfs_confirm_seqid(&data
->owner
->so_seqid
, 0);
1542 static void nfs4_open_release(void *calldata
)
1544 struct nfs4_opendata
*data
= calldata
;
1545 struct nfs4_state
*state
= NULL
;
1547 /* If this request hasn't been cancelled, do nothing */
1548 if (data
->cancelled
== 0)
1550 /* In case of error, no cleanup! */
1551 if (data
->rpc_status
!= 0 || !data
->rpc_done
)
1553 /* In case we need an open_confirm, no cleanup! */
1554 if (data
->o_res
.rflags
& NFS4_OPEN_RESULT_CONFIRM
)
1556 state
= nfs4_opendata_to_nfs4_state(data
);
1558 nfs4_close_state(state
, data
->o_arg
.fmode
);
1560 nfs4_opendata_put(data
);
1563 static const struct rpc_call_ops nfs4_open_ops
= {
1564 .rpc_call_prepare
= nfs4_open_prepare
,
1565 .rpc_call_done
= nfs4_open_done
,
1566 .rpc_release
= nfs4_open_release
,
1569 static int nfs4_run_open_task(struct nfs4_opendata
*data
, int isrecover
)
1571 struct inode
*dir
= data
->dir
->d_inode
;
1572 struct nfs_server
*server
= NFS_SERVER(dir
);
1573 struct nfs_openargs
*o_arg
= &data
->o_arg
;
1574 struct nfs_openres
*o_res
= &data
->o_res
;
1575 struct rpc_task
*task
;
1576 struct rpc_message msg
= {
1577 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN
],
1580 .rpc_cred
= data
->owner
->so_cred
,
1582 struct rpc_task_setup task_setup_data
= {
1583 .rpc_client
= server
->client
,
1584 .rpc_message
= &msg
,
1585 .callback_ops
= &nfs4_open_ops
,
1586 .callback_data
= data
,
1587 .workqueue
= nfsiod_workqueue
,
1588 .flags
= RPC_TASK_ASYNC
,
1592 nfs41_init_sequence(&o_arg
->seq_args
, &o_res
->seq_res
, 1);
1593 kref_get(&data
->kref
);
1595 data
->rpc_status
= 0;
1596 data
->cancelled
= 0;
1598 nfs4_set_sequence_privileged(&o_arg
->seq_args
);
1599 task
= rpc_run_task(&task_setup_data
);
1601 return PTR_ERR(task
);
1602 status
= nfs4_wait_for_completion_rpc_task(task
);
1604 data
->cancelled
= 1;
1607 status
= data
->rpc_status
;
1613 static int _nfs4_recover_proc_open(struct nfs4_opendata
*data
)
1615 struct inode
*dir
= data
->dir
->d_inode
;
1616 struct nfs_openres
*o_res
= &data
->o_res
;
1619 status
= nfs4_run_open_task(data
, 1);
1620 if (status
!= 0 || !data
->rpc_done
)
1623 nfs_fattr_map_and_free_names(NFS_SERVER(dir
), &data
->f_attr
);
1625 if (o_res
->rflags
& NFS4_OPEN_RESULT_CONFIRM
) {
1626 status
= _nfs4_proc_open_confirm(data
);
1634 static int nfs4_opendata_access(struct rpc_cred
*cred
,
1635 struct nfs4_opendata
*opendata
,
1636 struct nfs4_state
*state
, fmode_t fmode
,
1639 struct nfs_access_entry cache
;
1642 /* access call failed or for some reason the server doesn't
1643 * support any access modes -- defer access call until later */
1644 if (opendata
->o_res
.access_supported
== 0)
1648 /* don't check MAY_WRITE - a newly created file may not have
1649 * write mode bits, but POSIX allows the creating process to write.
1650 * use openflags to check for exec, because fmode won't
1651 * always have FMODE_EXEC set when file open for exec. */
1652 if (openflags
& __FMODE_EXEC
) {
1653 /* ONLY check for exec rights */
1655 } else if (fmode
& FMODE_READ
)
1659 cache
.jiffies
= jiffies
;
1660 nfs_access_set_mask(&cache
, opendata
->o_res
.access_result
);
1661 nfs_access_add_cache(state
->inode
, &cache
);
1663 if ((mask
& ~cache
.mask
& (MAY_READ
| MAY_EXEC
)) == 0)
1666 /* even though OPEN succeeded, access is denied. Close the file */
1667 nfs4_close_state(state
, fmode
);
1672 * Note: On error, nfs4_proc_open will free the struct nfs4_opendata
1674 static int _nfs4_proc_open(struct nfs4_opendata
*data
)
1676 struct inode
*dir
= data
->dir
->d_inode
;
1677 struct nfs_server
*server
= NFS_SERVER(dir
);
1678 struct nfs_openargs
*o_arg
= &data
->o_arg
;
1679 struct nfs_openres
*o_res
= &data
->o_res
;
1682 status
= nfs4_run_open_task(data
, 0);
1683 if (!data
->rpc_done
)
1686 if (status
== -NFS4ERR_BADNAME
&&
1687 !(o_arg
->open_flags
& O_CREAT
))
1692 nfs_fattr_map_and_free_names(server
, &data
->f_attr
);
1694 if (o_arg
->open_flags
& O_CREAT
)
1695 update_changeattr(dir
, &o_res
->cinfo
);
1696 if ((o_res
->rflags
& NFS4_OPEN_RESULT_LOCKTYPE_POSIX
) == 0)
1697 server
->caps
&= ~NFS_CAP_POSIX_LOCK
;
1698 if(o_res
->rflags
& NFS4_OPEN_RESULT_CONFIRM
) {
1699 status
= _nfs4_proc_open_confirm(data
);
1703 if (!(o_res
->f_attr
->valid
& NFS_ATTR_FATTR
))
1704 _nfs4_proc_getattr(server
, &o_res
->fh
, o_res
->f_attr
);
1708 static int nfs4_recover_expired_lease(struct nfs_server
*server
)
1710 return nfs4_client_recover_expired_lease(server
->nfs_client
);
1715 * reclaim state on the server after a network partition.
1716 * Assumes caller holds the appropriate lock
1718 static int _nfs4_open_expired(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1720 struct nfs4_opendata
*opendata
;
1723 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
);
1724 if (IS_ERR(opendata
))
1725 return PTR_ERR(opendata
);
1726 ret
= nfs4_open_recover(opendata
, state
);
1728 d_drop(ctx
->dentry
);
1729 nfs4_opendata_put(opendata
);
1733 static int nfs4_do_open_expired(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1735 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1736 struct nfs4_exception exception
= { };
1740 err
= _nfs4_open_expired(ctx
, state
);
1744 case -NFS4ERR_GRACE
:
1745 case -NFS4ERR_DELAY
:
1746 nfs4_handle_exception(server
, err
, &exception
);
1749 } while (exception
.retry
);
1754 static int nfs4_open_expired(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
1756 struct nfs_open_context
*ctx
;
1759 ctx
= nfs4_state_find_open_context(state
);
1761 return PTR_ERR(ctx
);
1762 ret
= nfs4_do_open_expired(ctx
, state
);
1763 put_nfs_open_context(ctx
);
1767 #if defined(CONFIG_NFS_V4_1)
1768 static void nfs41_clear_delegation_stateid(struct nfs4_state
*state
)
1770 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1771 nfs4_stateid
*stateid
= &state
->stateid
;
1774 /* If a state reset has been done, test_stateid is unneeded */
1775 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0)
1778 status
= nfs41_test_stateid(server
, stateid
);
1779 if (status
!= NFS_OK
) {
1780 /* Free the stateid unless the server explicitly
1781 * informs us the stateid is unrecognized. */
1782 if (status
!= -NFS4ERR_BAD_STATEID
)
1783 nfs41_free_stateid(server
, stateid
);
1784 nfs_remove_bad_delegation(state
->inode
);
1786 write_seqlock(&state
->seqlock
);
1787 nfs4_stateid_copy(&state
->stateid
, &state
->open_stateid
);
1788 write_sequnlock(&state
->seqlock
);
1789 clear_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1794 * nfs41_check_open_stateid - possibly free an open stateid
1796 * @state: NFSv4 state for an inode
1798 * Returns NFS_OK if recovery for this stateid is now finished.
1799 * Otherwise a negative NFS4ERR value is returned.
1801 static int nfs41_check_open_stateid(struct nfs4_state
*state
)
1803 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1804 nfs4_stateid
*stateid
= &state
->open_stateid
;
1807 /* If a state reset has been done, test_stateid is unneeded */
1808 if ((test_bit(NFS_O_RDONLY_STATE
, &state
->flags
) == 0) &&
1809 (test_bit(NFS_O_WRONLY_STATE
, &state
->flags
) == 0) &&
1810 (test_bit(NFS_O_RDWR_STATE
, &state
->flags
) == 0))
1811 return -NFS4ERR_BAD_STATEID
;
1813 status
= nfs41_test_stateid(server
, stateid
);
1814 if (status
!= NFS_OK
) {
1815 /* Free the stateid unless the server explicitly
1816 * informs us the stateid is unrecognized. */
1817 if (status
!= -NFS4ERR_BAD_STATEID
)
1818 nfs41_free_stateid(server
, stateid
);
1820 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1821 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1822 clear_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1827 static int nfs41_open_expired(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
1831 nfs41_clear_delegation_stateid(state
);
1832 status
= nfs41_check_open_stateid(state
);
1833 if (status
!= NFS_OK
)
1834 status
= nfs4_open_expired(sp
, state
);
1840 * on an EXCLUSIVE create, the server should send back a bitmask with FATTR4-*
1841 * fields corresponding to attributes that were used to store the verifier.
1842 * Make sure we clobber those fields in the later setattr call
1844 static inline void nfs4_exclusive_attrset(struct nfs4_opendata
*opendata
, struct iattr
*sattr
)
1846 if ((opendata
->o_res
.attrset
[1] & FATTR4_WORD1_TIME_ACCESS
) &&
1847 !(sattr
->ia_valid
& ATTR_ATIME_SET
))
1848 sattr
->ia_valid
|= ATTR_ATIME
;
1850 if ((opendata
->o_res
.attrset
[1] & FATTR4_WORD1_TIME_MODIFY
) &&
1851 !(sattr
->ia_valid
& ATTR_MTIME_SET
))
1852 sattr
->ia_valid
|= ATTR_MTIME
;
1855 static int _nfs4_open_and_get_state(struct nfs4_opendata
*opendata
,
1858 struct nfs4_state
**res
)
1860 struct nfs4_state_owner
*sp
= opendata
->owner
;
1861 struct nfs_server
*server
= sp
->so_server
;
1862 struct nfs4_state
*state
;
1866 seq
= raw_seqcount_begin(&sp
->so_reclaim_seqcount
);
1868 ret
= _nfs4_proc_open(opendata
);
1872 state
= nfs4_opendata_to_nfs4_state(opendata
);
1873 ret
= PTR_ERR(state
);
1876 if (server
->caps
& NFS_CAP_POSIX_LOCK
)
1877 set_bit(NFS_STATE_POSIX_LOCKS
, &state
->flags
);
1879 ret
= nfs4_opendata_access(sp
->so_cred
, opendata
, state
, fmode
, flags
);
1883 if (read_seqcount_retry(&sp
->so_reclaim_seqcount
, seq
)) {
1884 nfs4_schedule_stateid_recovery(server
, state
);
1885 nfs4_wait_clnt_recover(server
->nfs_client
);
1893 * Returns a referenced nfs4_state
1895 static int _nfs4_do_open(struct inode
*dir
,
1896 struct dentry
*dentry
,
1899 struct iattr
*sattr
,
1900 struct rpc_cred
*cred
,
1901 struct nfs4_state
**res
,
1902 struct nfs4_threshold
**ctx_th
)
1904 struct nfs4_state_owner
*sp
;
1905 struct nfs4_state
*state
= NULL
;
1906 struct nfs_server
*server
= NFS_SERVER(dir
);
1907 struct nfs4_opendata
*opendata
;
1910 /* Protect against reboot recovery conflicts */
1912 sp
= nfs4_get_state_owner(server
, cred
, GFP_KERNEL
);
1914 dprintk("nfs4_do_open: nfs4_get_state_owner failed!\n");
1917 status
= nfs4_recover_expired_lease(server
);
1919 goto err_put_state_owner
;
1920 if (dentry
->d_inode
!= NULL
)
1921 nfs4_return_incompatible_delegation(dentry
->d_inode
, fmode
);
1923 opendata
= nfs4_opendata_alloc(dentry
, sp
, fmode
, flags
, sattr
, GFP_KERNEL
);
1924 if (opendata
== NULL
)
1925 goto err_put_state_owner
;
1927 if (ctx_th
&& server
->attr_bitmask
[2] & FATTR4_WORD2_MDSTHRESHOLD
) {
1928 opendata
->f_attr
.mdsthreshold
= pnfs_mdsthreshold_alloc();
1929 if (!opendata
->f_attr
.mdsthreshold
)
1930 goto err_opendata_put
;
1931 opendata
->o_arg
.open_bitmap
= &nfs4_pnfs_open_bitmap
[0];
1933 if (dentry
->d_inode
!= NULL
)
1934 opendata
->state
= nfs4_get_open_state(dentry
->d_inode
, sp
);
1936 status
= _nfs4_open_and_get_state(opendata
, fmode
, flags
, &state
);
1938 goto err_opendata_put
;
1940 if (opendata
->o_arg
.open_flags
& O_EXCL
) {
1941 nfs4_exclusive_attrset(opendata
, sattr
);
1943 nfs_fattr_init(opendata
->o_res
.f_attr
);
1944 status
= nfs4_do_setattr(state
->inode
, cred
,
1945 opendata
->o_res
.f_attr
, sattr
,
1948 nfs_setattr_update_inode(state
->inode
, sattr
);
1949 nfs_post_op_update_inode(state
->inode
, opendata
->o_res
.f_attr
);
1952 if (pnfs_use_threshold(ctx_th
, opendata
->f_attr
.mdsthreshold
, server
))
1953 *ctx_th
= opendata
->f_attr
.mdsthreshold
;
1955 kfree(opendata
->f_attr
.mdsthreshold
);
1956 opendata
->f_attr
.mdsthreshold
= NULL
;
1958 nfs4_opendata_put(opendata
);
1959 nfs4_put_state_owner(sp
);
1963 kfree(opendata
->f_attr
.mdsthreshold
);
1964 nfs4_opendata_put(opendata
);
1965 err_put_state_owner
:
1966 nfs4_put_state_owner(sp
);
1973 static struct nfs4_state
*nfs4_do_open(struct inode
*dir
,
1974 struct dentry
*dentry
,
1977 struct iattr
*sattr
,
1978 struct rpc_cred
*cred
,
1979 struct nfs4_threshold
**ctx_th
)
1981 struct nfs4_exception exception
= { };
1982 struct nfs4_state
*res
;
1985 fmode
&= FMODE_READ
|FMODE_WRITE
|FMODE_EXEC
;
1987 status
= _nfs4_do_open(dir
, dentry
, fmode
, flags
, sattr
, cred
,
1991 /* NOTE: BAD_SEQID means the server and client disagree about the
1992 * book-keeping w.r.t. state-changing operations
1993 * (OPEN/CLOSE/LOCK/LOCKU...)
1994 * It is actually a sign of a bug on the client or on the server.
1996 * If we receive a BAD_SEQID error in the particular case of
1997 * doing an OPEN, we assume that nfs_increment_open_seqid() will
1998 * have unhashed the old state_owner for us, and that we can
1999 * therefore safely retry using a new one. We should still warn
2000 * the user though...
2002 if (status
== -NFS4ERR_BAD_SEQID
) {
2003 pr_warn_ratelimited("NFS: v4 server %s "
2004 " returned a bad sequence-id error!\n",
2005 NFS_SERVER(dir
)->nfs_client
->cl_hostname
);
2006 exception
.retry
= 1;
2010 * BAD_STATEID on OPEN means that the server cancelled our
2011 * state before it received the OPEN_CONFIRM.
2012 * Recover by retrying the request as per the discussion
2013 * on Page 181 of RFC3530.
2015 if (status
== -NFS4ERR_BAD_STATEID
) {
2016 exception
.retry
= 1;
2019 if (status
== -EAGAIN
) {
2020 /* We must have found a delegation */
2021 exception
.retry
= 1;
2024 res
= ERR_PTR(nfs4_handle_exception(NFS_SERVER(dir
),
2025 status
, &exception
));
2026 } while (exception
.retry
);
2030 static int _nfs4_do_setattr(struct inode
*inode
, struct rpc_cred
*cred
,
2031 struct nfs_fattr
*fattr
, struct iattr
*sattr
,
2032 struct nfs4_state
*state
)
2034 struct nfs_server
*server
= NFS_SERVER(inode
);
2035 struct nfs_setattrargs arg
= {
2036 .fh
= NFS_FH(inode
),
2039 .bitmask
= server
->attr_bitmask
,
2041 struct nfs_setattrres res
= {
2045 struct rpc_message msg
= {
2046 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETATTR
],
2051 unsigned long timestamp
= jiffies
;
2054 nfs_fattr_init(fattr
);
2056 if (state
!= NULL
) {
2057 struct nfs_lockowner lockowner
= {
2058 .l_owner
= current
->files
,
2059 .l_pid
= current
->tgid
,
2061 nfs4_select_rw_stateid(&arg
.stateid
, state
, FMODE_WRITE
,
2063 } else if (nfs4_copy_delegation_stateid(&arg
.stateid
, inode
,
2065 /* Use that stateid */
2067 nfs4_stateid_copy(&arg
.stateid
, &zero_stateid
);
2069 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
2070 if (status
== 0 && state
!= NULL
)
2071 renew_lease(server
, timestamp
);
2075 static int nfs4_do_setattr(struct inode
*inode
, struct rpc_cred
*cred
,
2076 struct nfs_fattr
*fattr
, struct iattr
*sattr
,
2077 struct nfs4_state
*state
)
2079 struct nfs_server
*server
= NFS_SERVER(inode
);
2080 struct nfs4_exception exception
= {
2086 err
= _nfs4_do_setattr(inode
, cred
, fattr
, sattr
, state
);
2088 case -NFS4ERR_OPENMODE
:
2089 if (state
&& !(state
->state
& FMODE_WRITE
)) {
2091 if (sattr
->ia_valid
& ATTR_OPEN
)
2096 err
= nfs4_handle_exception(server
, err
, &exception
);
2097 } while (exception
.retry
);
2102 struct nfs4_closedata
{
2103 struct inode
*inode
;
2104 struct nfs4_state
*state
;
2105 struct nfs_closeargs arg
;
2106 struct nfs_closeres res
;
2107 struct nfs_fattr fattr
;
2108 unsigned long timestamp
;
2113 static void nfs4_free_closedata(void *data
)
2115 struct nfs4_closedata
*calldata
= data
;
2116 struct nfs4_state_owner
*sp
= calldata
->state
->owner
;
2117 struct super_block
*sb
= calldata
->state
->inode
->i_sb
;
2120 pnfs_roc_release(calldata
->state
->inode
);
2121 nfs4_put_open_state(calldata
->state
);
2122 nfs_free_seqid(calldata
->arg
.seqid
);
2123 nfs4_put_state_owner(sp
);
2124 nfs_sb_deactive(sb
);
2128 static void nfs4_close_clear_stateid_flags(struct nfs4_state
*state
,
2131 spin_lock(&state
->owner
->so_lock
);
2132 if (!(fmode
& FMODE_READ
))
2133 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
2134 if (!(fmode
& FMODE_WRITE
))
2135 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
2136 clear_bit(NFS_O_RDWR_STATE
, &state
->flags
);
2137 spin_unlock(&state
->owner
->so_lock
);
2140 static void nfs4_close_done(struct rpc_task
*task
, void *data
)
2142 struct nfs4_closedata
*calldata
= data
;
2143 struct nfs4_state
*state
= calldata
->state
;
2144 struct nfs_server
*server
= NFS_SERVER(calldata
->inode
);
2146 dprintk("%s: begin!\n", __func__
);
2147 if (!nfs4_sequence_done(task
, &calldata
->res
.seq_res
))
2149 /* hmm. we are done with the inode, and in the process of freeing
2150 * the state_owner. we keep this around to process errors
2152 switch (task
->tk_status
) {
2155 pnfs_roc_set_barrier(state
->inode
,
2156 calldata
->roc_barrier
);
2157 nfs_set_open_stateid(state
, &calldata
->res
.stateid
, 0);
2158 renew_lease(server
, calldata
->timestamp
);
2159 nfs4_close_clear_stateid_flags(state
,
2160 calldata
->arg
.fmode
);
2162 case -NFS4ERR_STALE_STATEID
:
2163 case -NFS4ERR_OLD_STATEID
:
2164 case -NFS4ERR_BAD_STATEID
:
2165 case -NFS4ERR_EXPIRED
:
2166 if (calldata
->arg
.fmode
== 0)
2169 if (nfs4_async_handle_error(task
, server
, state
) == -EAGAIN
)
2170 rpc_restart_call_prepare(task
);
2172 nfs_release_seqid(calldata
->arg
.seqid
);
2173 nfs_refresh_inode(calldata
->inode
, calldata
->res
.fattr
);
2174 dprintk("%s: done, ret = %d!\n", __func__
, task
->tk_status
);
2177 static void nfs4_close_prepare(struct rpc_task
*task
, void *data
)
2179 struct nfs4_closedata
*calldata
= data
;
2180 struct nfs4_state
*state
= calldata
->state
;
2181 struct inode
*inode
= calldata
->inode
;
2184 dprintk("%s: begin!\n", __func__
);
2185 if (nfs_wait_on_sequence(calldata
->arg
.seqid
, task
) != 0)
2188 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_DOWNGRADE
];
2189 calldata
->arg
.fmode
= FMODE_READ
|FMODE_WRITE
;
2190 spin_lock(&state
->owner
->so_lock
);
2191 /* Calculate the change in open mode */
2192 if (state
->n_rdwr
== 0) {
2193 if (state
->n_rdonly
== 0) {
2194 call_close
|= test_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
2195 call_close
|= test_bit(NFS_O_RDWR_STATE
, &state
->flags
);
2196 calldata
->arg
.fmode
&= ~FMODE_READ
;
2198 if (state
->n_wronly
== 0) {
2199 call_close
|= test_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
2200 call_close
|= test_bit(NFS_O_RDWR_STATE
, &state
->flags
);
2201 calldata
->arg
.fmode
&= ~FMODE_WRITE
;
2204 spin_unlock(&state
->owner
->so_lock
);
2207 /* Note: exit _without_ calling nfs4_close_done */
2211 if (calldata
->arg
.fmode
== 0) {
2212 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CLOSE
];
2213 if (calldata
->roc
&&
2214 pnfs_roc_drain(inode
, &calldata
->roc_barrier
, task
))
2218 nfs_fattr_init(calldata
->res
.fattr
);
2219 calldata
->timestamp
= jiffies
;
2220 if (nfs4_setup_sequence(NFS_SERVER(inode
),
2221 &calldata
->arg
.seq_args
,
2222 &calldata
->res
.seq_res
,
2224 nfs_release_seqid(calldata
->arg
.seqid
);
2225 dprintk("%s: done!\n", __func__
);
2228 task
->tk_action
= NULL
;
2230 nfs4_sequence_done(task
, &calldata
->res
.seq_res
);
2233 static const struct rpc_call_ops nfs4_close_ops
= {
2234 .rpc_call_prepare
= nfs4_close_prepare
,
2235 .rpc_call_done
= nfs4_close_done
,
2236 .rpc_release
= nfs4_free_closedata
,
2240 * It is possible for data to be read/written from a mem-mapped file
2241 * after the sys_close call (which hits the vfs layer as a flush).
2242 * This means that we can't safely call nfsv4 close on a file until
2243 * the inode is cleared. This in turn means that we are not good
2244 * NFSv4 citizens - we do not indicate to the server to update the file's
2245 * share state even when we are done with one of the three share
2246 * stateid's in the inode.
2248 * NOTE: Caller must be holding the sp->so_owner semaphore!
2250 int nfs4_do_close(struct nfs4_state
*state
, gfp_t gfp_mask
, int wait
)
2252 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
2253 struct nfs4_closedata
*calldata
;
2254 struct nfs4_state_owner
*sp
= state
->owner
;
2255 struct rpc_task
*task
;
2256 struct rpc_message msg
= {
2257 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CLOSE
],
2258 .rpc_cred
= state
->owner
->so_cred
,
2260 struct rpc_task_setup task_setup_data
= {
2261 .rpc_client
= server
->client
,
2262 .rpc_message
= &msg
,
2263 .callback_ops
= &nfs4_close_ops
,
2264 .workqueue
= nfsiod_workqueue
,
2265 .flags
= RPC_TASK_ASYNC
,
2267 int status
= -ENOMEM
;
2269 calldata
= kzalloc(sizeof(*calldata
), gfp_mask
);
2270 if (calldata
== NULL
)
2272 nfs41_init_sequence(&calldata
->arg
.seq_args
, &calldata
->res
.seq_res
, 1);
2273 calldata
->inode
= state
->inode
;
2274 calldata
->state
= state
;
2275 calldata
->arg
.fh
= NFS_FH(state
->inode
);
2276 calldata
->arg
.stateid
= &state
->open_stateid
;
2277 /* Serialization for the sequence id */
2278 calldata
->arg
.seqid
= nfs_alloc_seqid(&state
->owner
->so_seqid
, gfp_mask
);
2279 if (calldata
->arg
.seqid
== NULL
)
2280 goto out_free_calldata
;
2281 calldata
->arg
.fmode
= 0;
2282 calldata
->arg
.bitmask
= server
->cache_consistency_bitmask
;
2283 calldata
->res
.fattr
= &calldata
->fattr
;
2284 calldata
->res
.seqid
= calldata
->arg
.seqid
;
2285 calldata
->res
.server
= server
;
2286 calldata
->roc
= pnfs_roc(state
->inode
);
2287 nfs_sb_active(calldata
->inode
->i_sb
);
2289 msg
.rpc_argp
= &calldata
->arg
;
2290 msg
.rpc_resp
= &calldata
->res
;
2291 task_setup_data
.callback_data
= calldata
;
2292 task
= rpc_run_task(&task_setup_data
);
2294 return PTR_ERR(task
);
2297 status
= rpc_wait_for_completion_task(task
);
2303 nfs4_put_open_state(state
);
2304 nfs4_put_state_owner(sp
);
2308 static struct inode
*
2309 nfs4_atomic_open(struct inode
*dir
, struct nfs_open_context
*ctx
, int open_flags
, struct iattr
*attr
)
2311 struct nfs4_state
*state
;
2313 /* Protect against concurrent sillydeletes */
2314 state
= nfs4_do_open(dir
, ctx
->dentry
, ctx
->mode
, open_flags
, attr
,
2315 ctx
->cred
, &ctx
->mdsthreshold
);
2317 return ERR_CAST(state
);
2319 return igrab(state
->inode
);
2322 static void nfs4_close_context(struct nfs_open_context
*ctx
, int is_sync
)
2324 if (ctx
->state
== NULL
)
2327 nfs4_close_sync(ctx
->state
, ctx
->mode
);
2329 nfs4_close_state(ctx
->state
, ctx
->mode
);
2332 static int _nfs4_server_capabilities(struct nfs_server
*server
, struct nfs_fh
*fhandle
)
2334 struct nfs4_server_caps_arg args
= {
2337 struct nfs4_server_caps_res res
= {};
2338 struct rpc_message msg
= {
2339 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SERVER_CAPS
],
2345 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2347 memcpy(server
->attr_bitmask
, res
.attr_bitmask
, sizeof(server
->attr_bitmask
));
2348 server
->caps
&= ~(NFS_CAP_ACLS
|NFS_CAP_HARDLINKS
|
2349 NFS_CAP_SYMLINKS
|NFS_CAP_FILEID
|
2350 NFS_CAP_MODE
|NFS_CAP_NLINK
|NFS_CAP_OWNER
|
2351 NFS_CAP_OWNER_GROUP
|NFS_CAP_ATIME
|
2352 NFS_CAP_CTIME
|NFS_CAP_MTIME
);
2353 if (res
.attr_bitmask
[0] & FATTR4_WORD0_ACL
)
2354 server
->caps
|= NFS_CAP_ACLS
;
2355 if (res
.has_links
!= 0)
2356 server
->caps
|= NFS_CAP_HARDLINKS
;
2357 if (res
.has_symlinks
!= 0)
2358 server
->caps
|= NFS_CAP_SYMLINKS
;
2359 if (res
.attr_bitmask
[0] & FATTR4_WORD0_FILEID
)
2360 server
->caps
|= NFS_CAP_FILEID
;
2361 if (res
.attr_bitmask
[1] & FATTR4_WORD1_MODE
)
2362 server
->caps
|= NFS_CAP_MODE
;
2363 if (res
.attr_bitmask
[1] & FATTR4_WORD1_NUMLINKS
)
2364 server
->caps
|= NFS_CAP_NLINK
;
2365 if (res
.attr_bitmask
[1] & FATTR4_WORD1_OWNER
)
2366 server
->caps
|= NFS_CAP_OWNER
;
2367 if (res
.attr_bitmask
[1] & FATTR4_WORD1_OWNER_GROUP
)
2368 server
->caps
|= NFS_CAP_OWNER_GROUP
;
2369 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_ACCESS
)
2370 server
->caps
|= NFS_CAP_ATIME
;
2371 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_METADATA
)
2372 server
->caps
|= NFS_CAP_CTIME
;
2373 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_MODIFY
)
2374 server
->caps
|= NFS_CAP_MTIME
;
2376 memcpy(server
->cache_consistency_bitmask
, res
.attr_bitmask
, sizeof(server
->cache_consistency_bitmask
));
2377 server
->cache_consistency_bitmask
[0] &= FATTR4_WORD0_CHANGE
|FATTR4_WORD0_SIZE
;
2378 server
->cache_consistency_bitmask
[1] &= FATTR4_WORD1_TIME_METADATA
|FATTR4_WORD1_TIME_MODIFY
;
2379 server
->acl_bitmask
= res
.acl_bitmask
;
2380 server
->fh_expire_type
= res
.fh_expire_type
;
2386 int nfs4_server_capabilities(struct nfs_server
*server
, struct nfs_fh
*fhandle
)
2388 struct nfs4_exception exception
= { };
2391 err
= nfs4_handle_exception(server
,
2392 _nfs4_server_capabilities(server
, fhandle
),
2394 } while (exception
.retry
);
2398 static int _nfs4_lookup_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2399 struct nfs_fsinfo
*info
)
2401 struct nfs4_lookup_root_arg args
= {
2402 .bitmask
= nfs4_fattr_bitmap
,
2404 struct nfs4_lookup_res res
= {
2406 .fattr
= info
->fattr
,
2409 struct rpc_message msg
= {
2410 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOOKUP_ROOT
],
2415 nfs_fattr_init(info
->fattr
);
2416 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2419 static int nfs4_lookup_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2420 struct nfs_fsinfo
*info
)
2422 struct nfs4_exception exception
= { };
2425 err
= _nfs4_lookup_root(server
, fhandle
, info
);
2428 case -NFS4ERR_WRONGSEC
:
2431 err
= nfs4_handle_exception(server
, err
, &exception
);
2433 } while (exception
.retry
);
2438 static int nfs4_lookup_root_sec(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2439 struct nfs_fsinfo
*info
, rpc_authflavor_t flavor
)
2441 struct rpc_auth
*auth
;
2444 auth
= rpcauth_create(flavor
, server
->client
);
2449 ret
= nfs4_lookup_root(server
, fhandle
, info
);
2454 static int nfs4_find_root_sec(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2455 struct nfs_fsinfo
*info
)
2457 int i
, len
, status
= 0;
2458 rpc_authflavor_t flav_array
[NFS_MAX_SECFLAVORS
];
2460 len
= rpcauth_list_flavors(flav_array
, ARRAY_SIZE(flav_array
));
2464 for (i
= 0; i
< len
; i
++) {
2465 /* AUTH_UNIX is the default flavor if none was specified,
2466 * thus has already been tried. */
2467 if (flav_array
[i
] == RPC_AUTH_UNIX
)
2470 status
= nfs4_lookup_root_sec(server
, fhandle
, info
, flav_array
[i
]);
2471 if (status
== -NFS4ERR_WRONGSEC
|| status
== -EACCES
)
2476 * -EACCESS could mean that the user doesn't have correct permissions
2477 * to access the mount. It could also mean that we tried to mount
2478 * with a gss auth flavor, but rpc.gssd isn't running. Either way,
2479 * existing mount programs don't handle -EACCES very well so it should
2480 * be mapped to -EPERM instead.
2482 if (status
== -EACCES
)
2488 * get the file handle for the "/" directory on the server
2490 int nfs4_proc_get_rootfh(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2491 struct nfs_fsinfo
*info
)
2493 int minor_version
= server
->nfs_client
->cl_minorversion
;
2494 int status
= nfs4_lookup_root(server
, fhandle
, info
);
2495 if ((status
== -NFS4ERR_WRONGSEC
) && !(server
->flags
& NFS_MOUNT_SECFLAVOUR
))
2497 * A status of -NFS4ERR_WRONGSEC will be mapped to -EPERM
2498 * by nfs4_map_errors() as this function exits.
2500 status
= nfs_v4_minor_ops
[minor_version
]->find_root_sec(server
, fhandle
, info
);
2502 status
= nfs4_server_capabilities(server
, fhandle
);
2504 status
= nfs4_do_fsinfo(server
, fhandle
, info
);
2505 return nfs4_map_errors(status
);
2508 static int nfs4_proc_get_root(struct nfs_server
*server
, struct nfs_fh
*mntfh
,
2509 struct nfs_fsinfo
*info
)
2512 struct nfs_fattr
*fattr
= info
->fattr
;
2514 error
= nfs4_server_capabilities(server
, mntfh
);
2516 dprintk("nfs4_get_root: getcaps error = %d\n", -error
);
2520 error
= nfs4_proc_getattr(server
, mntfh
, fattr
);
2522 dprintk("nfs4_get_root: getattr error = %d\n", -error
);
2526 if (fattr
->valid
& NFS_ATTR_FATTR_FSID
&&
2527 !nfs_fsid_equal(&server
->fsid
, &fattr
->fsid
))
2528 memcpy(&server
->fsid
, &fattr
->fsid
, sizeof(server
->fsid
));
2534 * Get locations and (maybe) other attributes of a referral.
2535 * Note that we'll actually follow the referral later when
2536 * we detect fsid mismatch in inode revalidation
2538 static int nfs4_get_referral(struct rpc_clnt
*client
, struct inode
*dir
,
2539 const struct qstr
*name
, struct nfs_fattr
*fattr
,
2540 struct nfs_fh
*fhandle
)
2542 int status
= -ENOMEM
;
2543 struct page
*page
= NULL
;
2544 struct nfs4_fs_locations
*locations
= NULL
;
2546 page
= alloc_page(GFP_KERNEL
);
2549 locations
= kmalloc(sizeof(struct nfs4_fs_locations
), GFP_KERNEL
);
2550 if (locations
== NULL
)
2553 status
= nfs4_proc_fs_locations(client
, dir
, name
, locations
, page
);
2556 /* Make sure server returned a different fsid for the referral */
2557 if (nfs_fsid_equal(&NFS_SERVER(dir
)->fsid
, &locations
->fattr
.fsid
)) {
2558 dprintk("%s: server did not return a different fsid for"
2559 " a referral at %s\n", __func__
, name
->name
);
2563 /* Fixup attributes for the nfs_lookup() call to nfs_fhget() */
2564 nfs_fixup_referral_attributes(&locations
->fattr
);
2566 /* replace the lookup nfs_fattr with the locations nfs_fattr */
2567 memcpy(fattr
, &locations
->fattr
, sizeof(struct nfs_fattr
));
2568 memset(fhandle
, 0, sizeof(struct nfs_fh
));
2576 static int _nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
2578 struct nfs4_getattr_arg args
= {
2580 .bitmask
= server
->attr_bitmask
,
2582 struct nfs4_getattr_res res
= {
2586 struct rpc_message msg
= {
2587 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETATTR
],
2592 nfs_fattr_init(fattr
);
2593 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2596 static int nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
2598 struct nfs4_exception exception
= { };
2601 err
= nfs4_handle_exception(server
,
2602 _nfs4_proc_getattr(server
, fhandle
, fattr
),
2604 } while (exception
.retry
);
2609 * The file is not closed if it is opened due to the a request to change
2610 * the size of the file. The open call will not be needed once the
2611 * VFS layer lookup-intents are implemented.
2613 * Close is called when the inode is destroyed.
2614 * If we haven't opened the file for O_WRONLY, we
2615 * need to in the size_change case to obtain a stateid.
2618 * Because OPEN is always done by name in nfsv4, it is
2619 * possible that we opened a different file by the same
2620 * name. We can recognize this race condition, but we
2621 * can't do anything about it besides returning an error.
2623 * This will be fixed with VFS changes (lookup-intent).
2626 nfs4_proc_setattr(struct dentry
*dentry
, struct nfs_fattr
*fattr
,
2627 struct iattr
*sattr
)
2629 struct inode
*inode
= dentry
->d_inode
;
2630 struct rpc_cred
*cred
= NULL
;
2631 struct nfs4_state
*state
= NULL
;
2634 if (pnfs_ld_layoutret_on_setattr(inode
))
2635 pnfs_commit_and_return_layout(inode
);
2637 nfs_fattr_init(fattr
);
2639 /* Deal with open(O_TRUNC) */
2640 if (sattr
->ia_valid
& ATTR_OPEN
)
2641 sattr
->ia_valid
&= ~(ATTR_MTIME
|ATTR_CTIME
|ATTR_OPEN
);
2643 /* Optimization: if the end result is no change, don't RPC */
2644 if ((sattr
->ia_valid
& ~(ATTR_FILE
)) == 0)
2647 /* Search for an existing open(O_WRITE) file */
2648 if (sattr
->ia_valid
& ATTR_FILE
) {
2649 struct nfs_open_context
*ctx
;
2651 ctx
= nfs_file_open_context(sattr
->ia_file
);
2658 status
= nfs4_do_setattr(inode
, cred
, fattr
, sattr
, state
);
2660 nfs_setattr_update_inode(inode
, sattr
);
2664 static int _nfs4_proc_lookup(struct rpc_clnt
*clnt
, struct inode
*dir
,
2665 const struct qstr
*name
, struct nfs_fh
*fhandle
,
2666 struct nfs_fattr
*fattr
)
2668 struct nfs_server
*server
= NFS_SERVER(dir
);
2670 struct nfs4_lookup_arg args
= {
2671 .bitmask
= server
->attr_bitmask
,
2672 .dir_fh
= NFS_FH(dir
),
2675 struct nfs4_lookup_res res
= {
2680 struct rpc_message msg
= {
2681 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOOKUP
],
2686 nfs_fattr_init(fattr
);
2688 dprintk("NFS call lookup %s\n", name
->name
);
2689 status
= nfs4_call_sync(clnt
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2690 dprintk("NFS reply lookup: %d\n", status
);
2694 static void nfs_fixup_secinfo_attributes(struct nfs_fattr
*fattr
)
2696 fattr
->valid
|= NFS_ATTR_FATTR_TYPE
| NFS_ATTR_FATTR_MODE
|
2697 NFS_ATTR_FATTR_NLINK
| NFS_ATTR_FATTR_MOUNTPOINT
;
2698 fattr
->mode
= S_IFDIR
| S_IRUGO
| S_IXUGO
;
2702 static int nfs4_proc_lookup_common(struct rpc_clnt
**clnt
, struct inode
*dir
,
2703 struct qstr
*name
, struct nfs_fh
*fhandle
,
2704 struct nfs_fattr
*fattr
)
2706 struct nfs4_exception exception
= { };
2707 struct rpc_clnt
*client
= *clnt
;
2710 err
= _nfs4_proc_lookup(client
, dir
, name
, fhandle
, fattr
);
2712 case -NFS4ERR_BADNAME
:
2715 case -NFS4ERR_MOVED
:
2716 err
= nfs4_get_referral(client
, dir
, name
, fattr
, fhandle
);
2718 case -NFS4ERR_WRONGSEC
:
2720 if (client
!= *clnt
)
2723 client
= nfs4_create_sec_client(client
, dir
, name
);
2725 return PTR_ERR(client
);
2727 exception
.retry
= 1;
2730 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
, &exception
);
2732 } while (exception
.retry
);
2737 else if (client
!= *clnt
)
2738 rpc_shutdown_client(client
);
2743 static int nfs4_proc_lookup(struct inode
*dir
, struct qstr
*name
,
2744 struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
2747 struct rpc_clnt
*client
= NFS_CLIENT(dir
);
2749 status
= nfs4_proc_lookup_common(&client
, dir
, name
, fhandle
, fattr
);
2750 if (client
!= NFS_CLIENT(dir
)) {
2751 rpc_shutdown_client(client
);
2752 nfs_fixup_secinfo_attributes(fattr
);
2758 nfs4_proc_lookup_mountpoint(struct inode
*dir
, struct qstr
*name
,
2759 struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
2762 struct rpc_clnt
*client
= rpc_clone_client(NFS_CLIENT(dir
));
2764 status
= nfs4_proc_lookup_common(&client
, dir
, name
, fhandle
, fattr
);
2766 rpc_shutdown_client(client
);
2767 return ERR_PTR(status
);
2772 static int _nfs4_proc_access(struct inode
*inode
, struct nfs_access_entry
*entry
)
2774 struct nfs_server
*server
= NFS_SERVER(inode
);
2775 struct nfs4_accessargs args
= {
2776 .fh
= NFS_FH(inode
),
2777 .bitmask
= server
->cache_consistency_bitmask
,
2779 struct nfs4_accessres res
= {
2782 struct rpc_message msg
= {
2783 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_ACCESS
],
2786 .rpc_cred
= entry
->cred
,
2788 int mode
= entry
->mask
;
2792 * Determine which access bits we want to ask for...
2794 if (mode
& MAY_READ
)
2795 args
.access
|= NFS4_ACCESS_READ
;
2796 if (S_ISDIR(inode
->i_mode
)) {
2797 if (mode
& MAY_WRITE
)
2798 args
.access
|= NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
| NFS4_ACCESS_DELETE
;
2799 if (mode
& MAY_EXEC
)
2800 args
.access
|= NFS4_ACCESS_LOOKUP
;
2802 if (mode
& MAY_WRITE
)
2803 args
.access
|= NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
;
2804 if (mode
& MAY_EXEC
)
2805 args
.access
|= NFS4_ACCESS_EXECUTE
;
2808 res
.fattr
= nfs_alloc_fattr();
2809 if (res
.fattr
== NULL
)
2812 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2814 nfs_access_set_mask(entry
, res
.access
);
2815 nfs_refresh_inode(inode
, res
.fattr
);
2817 nfs_free_fattr(res
.fattr
);
2821 static int nfs4_proc_access(struct inode
*inode
, struct nfs_access_entry
*entry
)
2823 struct nfs4_exception exception
= { };
2826 err
= nfs4_handle_exception(NFS_SERVER(inode
),
2827 _nfs4_proc_access(inode
, entry
),
2829 } while (exception
.retry
);
2834 * TODO: For the time being, we don't try to get any attributes
2835 * along with any of the zero-copy operations READ, READDIR,
2838 * In the case of the first three, we want to put the GETATTR
2839 * after the read-type operation -- this is because it is hard
2840 * to predict the length of a GETATTR response in v4, and thus
2841 * align the READ data correctly. This means that the GETATTR
2842 * may end up partially falling into the page cache, and we should
2843 * shift it into the 'tail' of the xdr_buf before processing.
2844 * To do this efficiently, we need to know the total length
2845 * of data received, which doesn't seem to be available outside
2848 * In the case of WRITE, we also want to put the GETATTR after
2849 * the operation -- in this case because we want to make sure
2850 * we get the post-operation mtime and size.
2852 * Both of these changes to the XDR layer would in fact be quite
2853 * minor, but I decided to leave them for a subsequent patch.
2855 static int _nfs4_proc_readlink(struct inode
*inode
, struct page
*page
,
2856 unsigned int pgbase
, unsigned int pglen
)
2858 struct nfs4_readlink args
= {
2859 .fh
= NFS_FH(inode
),
2864 struct nfs4_readlink_res res
;
2865 struct rpc_message msg
= {
2866 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READLINK
],
2871 return nfs4_call_sync(NFS_SERVER(inode
)->client
, NFS_SERVER(inode
), &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2874 static int nfs4_proc_readlink(struct inode
*inode
, struct page
*page
,
2875 unsigned int pgbase
, unsigned int pglen
)
2877 struct nfs4_exception exception
= { };
2880 err
= nfs4_handle_exception(NFS_SERVER(inode
),
2881 _nfs4_proc_readlink(inode
, page
, pgbase
, pglen
),
2883 } while (exception
.retry
);
2888 * This is just for mknod. open(O_CREAT) will always do ->open_context().
2891 nfs4_proc_create(struct inode
*dir
, struct dentry
*dentry
, struct iattr
*sattr
,
2894 struct nfs_open_context
*ctx
;
2895 struct nfs4_state
*state
;
2898 ctx
= alloc_nfs_open_context(dentry
, FMODE_READ
);
2900 return PTR_ERR(ctx
);
2902 sattr
->ia_mode
&= ~current_umask();
2903 state
= nfs4_do_open(dir
, dentry
, ctx
->mode
,
2904 flags
, sattr
, ctx
->cred
,
2905 &ctx
->mdsthreshold
);
2907 if (IS_ERR(state
)) {
2908 status
= PTR_ERR(state
);
2911 d_add(dentry
, igrab(state
->inode
));
2912 nfs_set_verifier(dentry
, nfs_save_change_attribute(dir
));
2915 put_nfs_open_context(ctx
);
2919 static int _nfs4_proc_remove(struct inode
*dir
, struct qstr
*name
)
2921 struct nfs_server
*server
= NFS_SERVER(dir
);
2922 struct nfs_removeargs args
= {
2926 struct nfs_removeres res
= {
2929 struct rpc_message msg
= {
2930 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_REMOVE
],
2936 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 1);
2938 update_changeattr(dir
, &res
.cinfo
);
2942 static int nfs4_proc_remove(struct inode
*dir
, struct qstr
*name
)
2944 struct nfs4_exception exception
= { };
2947 err
= nfs4_handle_exception(NFS_SERVER(dir
),
2948 _nfs4_proc_remove(dir
, name
),
2950 } while (exception
.retry
);
2954 static void nfs4_proc_unlink_setup(struct rpc_message
*msg
, struct inode
*dir
)
2956 struct nfs_server
*server
= NFS_SERVER(dir
);
2957 struct nfs_removeargs
*args
= msg
->rpc_argp
;
2958 struct nfs_removeres
*res
= msg
->rpc_resp
;
2960 res
->server
= server
;
2961 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_REMOVE
];
2962 nfs41_init_sequence(&args
->seq_args
, &res
->seq_res
, 1);
2965 static void nfs4_proc_unlink_rpc_prepare(struct rpc_task
*task
, struct nfs_unlinkdata
*data
)
2967 nfs4_setup_sequence(NFS_SERVER(data
->dir
),
2968 &data
->args
.seq_args
,
2973 static int nfs4_proc_unlink_done(struct rpc_task
*task
, struct inode
*dir
)
2975 struct nfs_removeres
*res
= task
->tk_msg
.rpc_resp
;
2977 if (!nfs4_sequence_done(task
, &res
->seq_res
))
2979 if (nfs4_async_handle_error(task
, res
->server
, NULL
) == -EAGAIN
)
2981 update_changeattr(dir
, &res
->cinfo
);
2985 static void nfs4_proc_rename_setup(struct rpc_message
*msg
, struct inode
*dir
)
2987 struct nfs_server
*server
= NFS_SERVER(dir
);
2988 struct nfs_renameargs
*arg
= msg
->rpc_argp
;
2989 struct nfs_renameres
*res
= msg
->rpc_resp
;
2991 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENAME
];
2992 res
->server
= server
;
2993 nfs41_init_sequence(&arg
->seq_args
, &res
->seq_res
, 1);
2996 static void nfs4_proc_rename_rpc_prepare(struct rpc_task
*task
, struct nfs_renamedata
*data
)
2998 nfs4_setup_sequence(NFS_SERVER(data
->old_dir
),
2999 &data
->args
.seq_args
,
3004 static int nfs4_proc_rename_done(struct rpc_task
*task
, struct inode
*old_dir
,
3005 struct inode
*new_dir
)
3007 struct nfs_renameres
*res
= task
->tk_msg
.rpc_resp
;
3009 if (!nfs4_sequence_done(task
, &res
->seq_res
))
3011 if (nfs4_async_handle_error(task
, res
->server
, NULL
) == -EAGAIN
)
3014 update_changeattr(old_dir
, &res
->old_cinfo
);
3015 update_changeattr(new_dir
, &res
->new_cinfo
);
3019 static int _nfs4_proc_rename(struct inode
*old_dir
, struct qstr
*old_name
,
3020 struct inode
*new_dir
, struct qstr
*new_name
)
3022 struct nfs_server
*server
= NFS_SERVER(old_dir
);
3023 struct nfs_renameargs arg
= {
3024 .old_dir
= NFS_FH(old_dir
),
3025 .new_dir
= NFS_FH(new_dir
),
3026 .old_name
= old_name
,
3027 .new_name
= new_name
,
3029 struct nfs_renameres res
= {
3032 struct rpc_message msg
= {
3033 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENAME
],
3037 int status
= -ENOMEM
;
3039 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
3041 update_changeattr(old_dir
, &res
.old_cinfo
);
3042 update_changeattr(new_dir
, &res
.new_cinfo
);
3047 static int nfs4_proc_rename(struct inode
*old_dir
, struct qstr
*old_name
,
3048 struct inode
*new_dir
, struct qstr
*new_name
)
3050 struct nfs4_exception exception
= { };
3053 err
= nfs4_handle_exception(NFS_SERVER(old_dir
),
3054 _nfs4_proc_rename(old_dir
, old_name
,
3057 } while (exception
.retry
);
3061 static int _nfs4_proc_link(struct inode
*inode
, struct inode
*dir
, struct qstr
*name
)
3063 struct nfs_server
*server
= NFS_SERVER(inode
);
3064 struct nfs4_link_arg arg
= {
3065 .fh
= NFS_FH(inode
),
3066 .dir_fh
= NFS_FH(dir
),
3068 .bitmask
= server
->attr_bitmask
,
3070 struct nfs4_link_res res
= {
3073 struct rpc_message msg
= {
3074 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LINK
],
3078 int status
= -ENOMEM
;
3080 res
.fattr
= nfs_alloc_fattr();
3081 if (res
.fattr
== NULL
)
3084 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
3086 update_changeattr(dir
, &res
.cinfo
);
3087 nfs_post_op_update_inode(inode
, res
.fattr
);
3090 nfs_free_fattr(res
.fattr
);
3094 static int nfs4_proc_link(struct inode
*inode
, struct inode
*dir
, struct qstr
*name
)
3096 struct nfs4_exception exception
= { };
3099 err
= nfs4_handle_exception(NFS_SERVER(inode
),
3100 _nfs4_proc_link(inode
, dir
, name
),
3102 } while (exception
.retry
);
3106 struct nfs4_createdata
{
3107 struct rpc_message msg
;
3108 struct nfs4_create_arg arg
;
3109 struct nfs4_create_res res
;
3111 struct nfs_fattr fattr
;
3114 static struct nfs4_createdata
*nfs4_alloc_createdata(struct inode
*dir
,
3115 struct qstr
*name
, struct iattr
*sattr
, u32 ftype
)
3117 struct nfs4_createdata
*data
;
3119 data
= kzalloc(sizeof(*data
), GFP_KERNEL
);
3121 struct nfs_server
*server
= NFS_SERVER(dir
);
3123 data
->msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CREATE
];
3124 data
->msg
.rpc_argp
= &data
->arg
;
3125 data
->msg
.rpc_resp
= &data
->res
;
3126 data
->arg
.dir_fh
= NFS_FH(dir
);
3127 data
->arg
.server
= server
;
3128 data
->arg
.name
= name
;
3129 data
->arg
.attrs
= sattr
;
3130 data
->arg
.ftype
= ftype
;
3131 data
->arg
.bitmask
= server
->attr_bitmask
;
3132 data
->res
.server
= server
;
3133 data
->res
.fh
= &data
->fh
;
3134 data
->res
.fattr
= &data
->fattr
;
3135 nfs_fattr_init(data
->res
.fattr
);
3140 static int nfs4_do_create(struct inode
*dir
, struct dentry
*dentry
, struct nfs4_createdata
*data
)
3142 int status
= nfs4_call_sync(NFS_SERVER(dir
)->client
, NFS_SERVER(dir
), &data
->msg
,
3143 &data
->arg
.seq_args
, &data
->res
.seq_res
, 1);
3145 update_changeattr(dir
, &data
->res
.dir_cinfo
);
3146 status
= nfs_instantiate(dentry
, data
->res
.fh
, data
->res
.fattr
);
3151 static void nfs4_free_createdata(struct nfs4_createdata
*data
)
3156 static int _nfs4_proc_symlink(struct inode
*dir
, struct dentry
*dentry
,
3157 struct page
*page
, unsigned int len
, struct iattr
*sattr
)
3159 struct nfs4_createdata
*data
;
3160 int status
= -ENAMETOOLONG
;
3162 if (len
> NFS4_MAXPATHLEN
)
3166 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4LNK
);
3170 data
->msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SYMLINK
];
3171 data
->arg
.u
.symlink
.pages
= &page
;
3172 data
->arg
.u
.symlink
.len
= len
;
3174 status
= nfs4_do_create(dir
, dentry
, data
);
3176 nfs4_free_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_exception exception
= { };
3187 err
= nfs4_handle_exception(NFS_SERVER(dir
),
3188 _nfs4_proc_symlink(dir
, dentry
, page
,
3191 } while (exception
.retry
);
3195 static int _nfs4_proc_mkdir(struct inode
*dir
, struct dentry
*dentry
,
3196 struct iattr
*sattr
)
3198 struct nfs4_createdata
*data
;
3199 int status
= -ENOMEM
;
3201 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4DIR
);
3205 status
= nfs4_do_create(dir
, dentry
, data
);
3207 nfs4_free_createdata(data
);
3212 static int nfs4_proc_mkdir(struct inode
*dir
, struct dentry
*dentry
,
3213 struct iattr
*sattr
)
3215 struct nfs4_exception exception
= { };
3218 sattr
->ia_mode
&= ~current_umask();
3220 err
= nfs4_handle_exception(NFS_SERVER(dir
),
3221 _nfs4_proc_mkdir(dir
, dentry
, sattr
),
3223 } while (exception
.retry
);
3227 static int _nfs4_proc_readdir(struct dentry
*dentry
, struct rpc_cred
*cred
,
3228 u64 cookie
, struct page
**pages
, unsigned int count
, int plus
)
3230 struct inode
*dir
= dentry
->d_inode
;
3231 struct nfs4_readdir_arg args
= {
3236 .bitmask
= NFS_SERVER(dentry
->d_inode
)->attr_bitmask
,
3239 struct nfs4_readdir_res res
;
3240 struct rpc_message msg
= {
3241 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READDIR
],
3248 dprintk("%s: dentry = %s/%s, cookie = %Lu\n", __func__
,
3249 dentry
->d_parent
->d_name
.name
,
3250 dentry
->d_name
.name
,
3251 (unsigned long long)cookie
);
3252 nfs4_setup_readdir(cookie
, NFS_I(dir
)->cookieverf
, dentry
, &args
);
3253 res
.pgbase
= args
.pgbase
;
3254 status
= nfs4_call_sync(NFS_SERVER(dir
)->client
, NFS_SERVER(dir
), &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3256 memcpy(NFS_I(dir
)->cookieverf
, res
.verifier
.data
, NFS4_VERIFIER_SIZE
);
3257 status
+= args
.pgbase
;
3260 nfs_invalidate_atime(dir
);
3262 dprintk("%s: returns %d\n", __func__
, status
);
3266 static int nfs4_proc_readdir(struct dentry
*dentry
, struct rpc_cred
*cred
,
3267 u64 cookie
, struct page
**pages
, unsigned int count
, int plus
)
3269 struct nfs4_exception exception
= { };
3272 err
= nfs4_handle_exception(NFS_SERVER(dentry
->d_inode
),
3273 _nfs4_proc_readdir(dentry
, cred
, cookie
,
3274 pages
, count
, plus
),
3276 } while (exception
.retry
);
3280 static int _nfs4_proc_mknod(struct inode
*dir
, struct dentry
*dentry
,
3281 struct iattr
*sattr
, dev_t rdev
)
3283 struct nfs4_createdata
*data
;
3284 int mode
= sattr
->ia_mode
;
3285 int status
= -ENOMEM
;
3287 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4SOCK
);
3292 data
->arg
.ftype
= NF4FIFO
;
3293 else if (S_ISBLK(mode
)) {
3294 data
->arg
.ftype
= NF4BLK
;
3295 data
->arg
.u
.device
.specdata1
= MAJOR(rdev
);
3296 data
->arg
.u
.device
.specdata2
= MINOR(rdev
);
3298 else if (S_ISCHR(mode
)) {
3299 data
->arg
.ftype
= NF4CHR
;
3300 data
->arg
.u
.device
.specdata1
= MAJOR(rdev
);
3301 data
->arg
.u
.device
.specdata2
= MINOR(rdev
);
3302 } else if (!S_ISSOCK(mode
)) {
3307 status
= nfs4_do_create(dir
, dentry
, data
);
3309 nfs4_free_createdata(data
);
3314 static int nfs4_proc_mknod(struct inode
*dir
, struct dentry
*dentry
,
3315 struct iattr
*sattr
, dev_t rdev
)
3317 struct nfs4_exception exception
= { };
3320 sattr
->ia_mode
&= ~current_umask();
3322 err
= nfs4_handle_exception(NFS_SERVER(dir
),
3323 _nfs4_proc_mknod(dir
, dentry
, sattr
, rdev
),
3325 } while (exception
.retry
);
3329 static int _nfs4_proc_statfs(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3330 struct nfs_fsstat
*fsstat
)
3332 struct nfs4_statfs_arg args
= {
3334 .bitmask
= server
->attr_bitmask
,
3336 struct nfs4_statfs_res res
= {
3339 struct rpc_message msg
= {
3340 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_STATFS
],
3345 nfs_fattr_init(fsstat
->fattr
);
3346 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3349 static int nfs4_proc_statfs(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsstat
*fsstat
)
3351 struct nfs4_exception exception
= { };
3354 err
= nfs4_handle_exception(server
,
3355 _nfs4_proc_statfs(server
, fhandle
, fsstat
),
3357 } while (exception
.retry
);
3361 static int _nfs4_do_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3362 struct nfs_fsinfo
*fsinfo
)
3364 struct nfs4_fsinfo_arg args
= {
3366 .bitmask
= server
->attr_bitmask
,
3368 struct nfs4_fsinfo_res res
= {
3371 struct rpc_message msg
= {
3372 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FSINFO
],
3377 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3380 static int nfs4_do_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsinfo
*fsinfo
)
3382 struct nfs4_exception exception
= { };
3386 err
= nfs4_handle_exception(server
,
3387 _nfs4_do_fsinfo(server
, fhandle
, fsinfo
),
3389 } while (exception
.retry
);
3393 static int nfs4_proc_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsinfo
*fsinfo
)
3397 nfs_fattr_init(fsinfo
->fattr
);
3398 error
= nfs4_do_fsinfo(server
, fhandle
, fsinfo
);
3400 /* block layout checks this! */
3401 server
->pnfs_blksize
= fsinfo
->blksize
;
3402 set_pnfs_layoutdriver(server
, fhandle
, fsinfo
->layouttype
);
3408 static int _nfs4_proc_pathconf(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3409 struct nfs_pathconf
*pathconf
)
3411 struct nfs4_pathconf_arg args
= {
3413 .bitmask
= server
->attr_bitmask
,
3415 struct nfs4_pathconf_res res
= {
3416 .pathconf
= pathconf
,
3418 struct rpc_message msg
= {
3419 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_PATHCONF
],
3424 /* None of the pathconf attributes are mandatory to implement */
3425 if ((args
.bitmask
[0] & nfs4_pathconf_bitmap
[0]) == 0) {
3426 memset(pathconf
, 0, sizeof(*pathconf
));
3430 nfs_fattr_init(pathconf
->fattr
);
3431 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3434 static int nfs4_proc_pathconf(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3435 struct nfs_pathconf
*pathconf
)
3437 struct nfs4_exception exception
= { };
3441 err
= nfs4_handle_exception(server
,
3442 _nfs4_proc_pathconf(server
, fhandle
, pathconf
),
3444 } while (exception
.retry
);
3448 void __nfs4_read_done_cb(struct nfs_read_data
*data
)
3450 nfs_invalidate_atime(data
->header
->inode
);
3453 static int nfs4_read_done_cb(struct rpc_task
*task
, struct nfs_read_data
*data
)
3455 struct nfs_server
*server
= NFS_SERVER(data
->header
->inode
);
3457 if (nfs4_async_handle_error(task
, server
, data
->args
.context
->state
) == -EAGAIN
) {
3458 rpc_restart_call_prepare(task
);
3462 __nfs4_read_done_cb(data
);
3463 if (task
->tk_status
> 0)
3464 renew_lease(server
, data
->timestamp
);
3468 static int nfs4_read_done(struct rpc_task
*task
, struct nfs_read_data
*data
)
3471 dprintk("--> %s\n", __func__
);
3473 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
3476 return data
->read_done_cb
? data
->read_done_cb(task
, data
) :
3477 nfs4_read_done_cb(task
, data
);
3480 static void nfs4_proc_read_setup(struct nfs_read_data
*data
, struct rpc_message
*msg
)
3482 data
->timestamp
= jiffies
;
3483 data
->read_done_cb
= nfs4_read_done_cb
;
3484 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READ
];
3485 nfs41_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 0);
3488 static void nfs4_proc_read_rpc_prepare(struct rpc_task
*task
, struct nfs_read_data
*data
)
3490 nfs4_setup_sequence(NFS_SERVER(data
->header
->inode
),
3491 &data
->args
.seq_args
,
3496 static int nfs4_write_done_cb(struct rpc_task
*task
, struct nfs_write_data
*data
)
3498 struct inode
*inode
= data
->header
->inode
;
3500 if (nfs4_async_handle_error(task
, NFS_SERVER(inode
), data
->args
.context
->state
) == -EAGAIN
) {
3501 rpc_restart_call_prepare(task
);
3504 if (task
->tk_status
>= 0) {
3505 renew_lease(NFS_SERVER(inode
), data
->timestamp
);
3506 nfs_post_op_update_inode_force_wcc(inode
, &data
->fattr
);
3511 static int nfs4_write_done(struct rpc_task
*task
, struct nfs_write_data
*data
)
3513 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
3515 return data
->write_done_cb
? data
->write_done_cb(task
, data
) :
3516 nfs4_write_done_cb(task
, data
);
3520 bool nfs4_write_need_cache_consistency_data(const struct nfs_write_data
*data
)
3522 const struct nfs_pgio_header
*hdr
= data
->header
;
3524 /* Don't request attributes for pNFS or O_DIRECT writes */
3525 if (data
->ds_clp
!= NULL
|| hdr
->dreq
!= NULL
)
3527 /* Otherwise, request attributes if and only if we don't hold
3530 return nfs4_have_delegation(hdr
->inode
, FMODE_READ
) == 0;
3533 static void nfs4_proc_write_setup(struct nfs_write_data
*data
, struct rpc_message
*msg
)
3535 struct nfs_server
*server
= NFS_SERVER(data
->header
->inode
);
3537 if (!nfs4_write_need_cache_consistency_data(data
)) {
3538 data
->args
.bitmask
= NULL
;
3539 data
->res
.fattr
= NULL
;
3541 data
->args
.bitmask
= server
->cache_consistency_bitmask
;
3543 if (!data
->write_done_cb
)
3544 data
->write_done_cb
= nfs4_write_done_cb
;
3545 data
->res
.server
= server
;
3546 data
->timestamp
= jiffies
;
3548 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_WRITE
];
3549 nfs41_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
3552 static void nfs4_proc_write_rpc_prepare(struct rpc_task
*task
, struct nfs_write_data
*data
)
3554 nfs4_setup_sequence(NFS_SERVER(data
->header
->inode
),
3555 &data
->args
.seq_args
,
3560 static void nfs4_proc_commit_rpc_prepare(struct rpc_task
*task
, struct nfs_commit_data
*data
)
3562 nfs4_setup_sequence(NFS_SERVER(data
->inode
),
3563 &data
->args
.seq_args
,
3568 static int nfs4_commit_done_cb(struct rpc_task
*task
, struct nfs_commit_data
*data
)
3570 struct inode
*inode
= data
->inode
;
3572 if (nfs4_async_handle_error(task
, NFS_SERVER(inode
), NULL
) == -EAGAIN
) {
3573 rpc_restart_call_prepare(task
);
3579 static int nfs4_commit_done(struct rpc_task
*task
, struct nfs_commit_data
*data
)
3581 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
3583 return data
->commit_done_cb(task
, data
);
3586 static void nfs4_proc_commit_setup(struct nfs_commit_data
*data
, struct rpc_message
*msg
)
3588 struct nfs_server
*server
= NFS_SERVER(data
->inode
);
3590 if (data
->commit_done_cb
== NULL
)
3591 data
->commit_done_cb
= nfs4_commit_done_cb
;
3592 data
->res
.server
= server
;
3593 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_COMMIT
];
3594 nfs41_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
3597 struct nfs4_renewdata
{
3598 struct nfs_client
*client
;
3599 unsigned long timestamp
;
3603 * nfs4_proc_async_renew(): This is not one of the nfs_rpc_ops; it is a special
3604 * standalone procedure for queueing an asynchronous RENEW.
3606 static void nfs4_renew_release(void *calldata
)
3608 struct nfs4_renewdata
*data
= calldata
;
3609 struct nfs_client
*clp
= data
->client
;
3611 if (atomic_read(&clp
->cl_count
) > 1)
3612 nfs4_schedule_state_renewal(clp
);
3613 nfs_put_client(clp
);
3617 static void nfs4_renew_done(struct rpc_task
*task
, void *calldata
)
3619 struct nfs4_renewdata
*data
= calldata
;
3620 struct nfs_client
*clp
= data
->client
;
3621 unsigned long timestamp
= data
->timestamp
;
3623 if (task
->tk_status
< 0) {
3624 /* Unless we're shutting down, schedule state recovery! */
3625 if (test_bit(NFS_CS_RENEWD
, &clp
->cl_res_state
) == 0)
3627 if (task
->tk_status
!= NFS4ERR_CB_PATH_DOWN
) {
3628 nfs4_schedule_lease_recovery(clp
);
3631 nfs4_schedule_path_down_recovery(clp
);
3633 do_renew_lease(clp
, timestamp
);
3636 static const struct rpc_call_ops nfs4_renew_ops
= {
3637 .rpc_call_done
= nfs4_renew_done
,
3638 .rpc_release
= nfs4_renew_release
,
3641 static int nfs4_proc_async_renew(struct nfs_client
*clp
, struct rpc_cred
*cred
, unsigned renew_flags
)
3643 struct rpc_message msg
= {
3644 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENEW
],
3648 struct nfs4_renewdata
*data
;
3650 if (renew_flags
== 0)
3652 if (!atomic_inc_not_zero(&clp
->cl_count
))
3654 data
= kmalloc(sizeof(*data
), GFP_NOFS
);
3658 data
->timestamp
= jiffies
;
3659 return rpc_call_async(clp
->cl_rpcclient
, &msg
, RPC_TASK_SOFT
,
3660 &nfs4_renew_ops
, data
);
3663 static int nfs4_proc_renew(struct nfs_client
*clp
, struct rpc_cred
*cred
)
3665 struct rpc_message msg
= {
3666 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENEW
],
3670 unsigned long now
= jiffies
;
3673 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, 0);
3676 do_renew_lease(clp
, now
);
3680 static inline int nfs4_server_supports_acls(struct nfs_server
*server
)
3682 return (server
->caps
& NFS_CAP_ACLS
)
3683 && (server
->acl_bitmask
& ACL4_SUPPORT_ALLOW_ACL
)
3684 && (server
->acl_bitmask
& ACL4_SUPPORT_DENY_ACL
);
3687 /* Assuming that XATTR_SIZE_MAX is a multiple of PAGE_SIZE, and that
3688 * it's OK to put sizeof(void) * (XATTR_SIZE_MAX/PAGE_SIZE) bytes on
3691 #define NFS4ACL_MAXPAGES DIV_ROUND_UP(XATTR_SIZE_MAX, PAGE_SIZE)
3693 static int buf_to_pages_noslab(const void *buf
, size_t buflen
,
3694 struct page
**pages
, unsigned int *pgbase
)
3696 struct page
*newpage
, **spages
;
3702 len
= min_t(size_t, PAGE_SIZE
, buflen
);
3703 newpage
= alloc_page(GFP_KERNEL
);
3705 if (newpage
== NULL
)
3707 memcpy(page_address(newpage
), buf
, len
);
3712 } while (buflen
!= 0);
3718 __free_page(spages
[rc
-1]);
3722 struct nfs4_cached_acl
{
3728 static void nfs4_set_cached_acl(struct inode
*inode
, struct nfs4_cached_acl
*acl
)
3730 struct nfs_inode
*nfsi
= NFS_I(inode
);
3732 spin_lock(&inode
->i_lock
);
3733 kfree(nfsi
->nfs4_acl
);
3734 nfsi
->nfs4_acl
= acl
;
3735 spin_unlock(&inode
->i_lock
);
3738 static void nfs4_zap_acl_attr(struct inode
*inode
)
3740 nfs4_set_cached_acl(inode
, NULL
);
3743 static inline ssize_t
nfs4_read_cached_acl(struct inode
*inode
, char *buf
, size_t buflen
)
3745 struct nfs_inode
*nfsi
= NFS_I(inode
);
3746 struct nfs4_cached_acl
*acl
;
3749 spin_lock(&inode
->i_lock
);
3750 acl
= nfsi
->nfs4_acl
;
3753 if (buf
== NULL
) /* user is just asking for length */
3755 if (acl
->cached
== 0)
3757 ret
= -ERANGE
; /* see getxattr(2) man page */
3758 if (acl
->len
> buflen
)
3760 memcpy(buf
, acl
->data
, acl
->len
);
3764 spin_unlock(&inode
->i_lock
);
3768 static void nfs4_write_cached_acl(struct inode
*inode
, struct page
**pages
, size_t pgbase
, size_t acl_len
)
3770 struct nfs4_cached_acl
*acl
;
3771 size_t buflen
= sizeof(*acl
) + acl_len
;
3773 if (buflen
<= PAGE_SIZE
) {
3774 acl
= kmalloc(buflen
, GFP_KERNEL
);
3778 _copy_from_pages(acl
->data
, pages
, pgbase
, acl_len
);
3780 acl
= kmalloc(sizeof(*acl
), GFP_KERNEL
);
3787 nfs4_set_cached_acl(inode
, acl
);
3791 * The getxattr API returns the required buffer length when called with a
3792 * NULL buf. The NFSv4 acl tool then calls getxattr again after allocating
3793 * the required buf. On a NULL buf, we send a page of data to the server
3794 * guessing that the ACL request can be serviced by a page. If so, we cache
3795 * up to the page of ACL data, and the 2nd call to getxattr is serviced by
3796 * the cache. If not so, we throw away the page, and cache the required
3797 * length. The next getxattr call will then produce another round trip to
3798 * the server, this time with the input buf of the required size.
3800 static ssize_t
__nfs4_get_acl_uncached(struct inode
*inode
, void *buf
, size_t buflen
)
3802 struct page
*pages
[NFS4ACL_MAXPAGES
] = {NULL
, };
3803 struct nfs_getaclargs args
= {
3804 .fh
= NFS_FH(inode
),
3808 struct nfs_getaclres res
= {
3811 struct rpc_message msg
= {
3812 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETACL
],
3816 unsigned int npages
= DIV_ROUND_UP(buflen
, PAGE_SIZE
);
3817 int ret
= -ENOMEM
, i
;
3819 /* As long as we're doing a round trip to the server anyway,
3820 * let's be prepared for a page of acl data. */
3823 if (npages
> ARRAY_SIZE(pages
))
3826 for (i
= 0; i
< npages
; i
++) {
3827 pages
[i
] = alloc_page(GFP_KERNEL
);
3832 /* for decoding across pages */
3833 res
.acl_scratch
= alloc_page(GFP_KERNEL
);
3834 if (!res
.acl_scratch
)
3837 args
.acl_len
= npages
* PAGE_SIZE
;
3838 args
.acl_pgbase
= 0;
3840 dprintk("%s buf %p buflen %zu npages %d args.acl_len %zu\n",
3841 __func__
, buf
, buflen
, npages
, args
.acl_len
);
3842 ret
= nfs4_call_sync(NFS_SERVER(inode
)->client
, NFS_SERVER(inode
),
3843 &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3847 /* Handle the case where the passed-in buffer is too short */
3848 if (res
.acl_flags
& NFS4_ACL_TRUNC
) {
3849 /* Did the user only issue a request for the acl length? */
3855 nfs4_write_cached_acl(inode
, pages
, res
.acl_data_offset
, res
.acl_len
);
3857 if (res
.acl_len
> buflen
) {
3861 _copy_from_pages(buf
, pages
, res
.acl_data_offset
, res
.acl_len
);
3866 for (i
= 0; i
< npages
; i
++)
3868 __free_page(pages
[i
]);
3869 if (res
.acl_scratch
)
3870 __free_page(res
.acl_scratch
);
3874 static ssize_t
nfs4_get_acl_uncached(struct inode
*inode
, void *buf
, size_t buflen
)
3876 struct nfs4_exception exception
= { };
3879 ret
= __nfs4_get_acl_uncached(inode
, buf
, buflen
);
3882 ret
= nfs4_handle_exception(NFS_SERVER(inode
), ret
, &exception
);
3883 } while (exception
.retry
);
3887 static ssize_t
nfs4_proc_get_acl(struct inode
*inode
, void *buf
, size_t buflen
)
3889 struct nfs_server
*server
= NFS_SERVER(inode
);
3892 if (!nfs4_server_supports_acls(server
))
3894 ret
= nfs_revalidate_inode(server
, inode
);
3897 if (NFS_I(inode
)->cache_validity
& NFS_INO_INVALID_ACL
)
3898 nfs_zap_acl_cache(inode
);
3899 ret
= nfs4_read_cached_acl(inode
, buf
, buflen
);
3901 /* -ENOENT is returned if there is no ACL or if there is an ACL
3902 * but no cached acl data, just the acl length */
3904 return nfs4_get_acl_uncached(inode
, buf
, buflen
);
3907 static int __nfs4_proc_set_acl(struct inode
*inode
, const void *buf
, size_t buflen
)
3909 struct nfs_server
*server
= NFS_SERVER(inode
);
3910 struct page
*pages
[NFS4ACL_MAXPAGES
];
3911 struct nfs_setaclargs arg
= {
3912 .fh
= NFS_FH(inode
),
3916 struct nfs_setaclres res
;
3917 struct rpc_message msg
= {
3918 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETACL
],
3922 unsigned int npages
= DIV_ROUND_UP(buflen
, PAGE_SIZE
);
3925 if (!nfs4_server_supports_acls(server
))
3927 if (npages
> ARRAY_SIZE(pages
))
3929 i
= buf_to_pages_noslab(buf
, buflen
, arg
.acl_pages
, &arg
.acl_pgbase
);
3932 nfs4_inode_return_delegation(inode
);
3933 ret
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
3936 * Free each page after tx, so the only ref left is
3937 * held by the network stack
3940 put_page(pages
[i
-1]);
3943 * Acl update can result in inode attribute update.
3944 * so mark the attribute cache invalid.
3946 spin_lock(&inode
->i_lock
);
3947 NFS_I(inode
)->cache_validity
|= NFS_INO_INVALID_ATTR
;
3948 spin_unlock(&inode
->i_lock
);
3949 nfs_access_zap_cache(inode
);
3950 nfs_zap_acl_cache(inode
);
3954 static int nfs4_proc_set_acl(struct inode
*inode
, const void *buf
, size_t buflen
)
3956 struct nfs4_exception exception
= { };
3959 err
= nfs4_handle_exception(NFS_SERVER(inode
),
3960 __nfs4_proc_set_acl(inode
, buf
, buflen
),
3962 } while (exception
.retry
);
3967 nfs4_async_handle_error(struct rpc_task
*task
, const struct nfs_server
*server
, struct nfs4_state
*state
)
3969 struct nfs_client
*clp
= server
->nfs_client
;
3971 if (task
->tk_status
>= 0)
3973 switch(task
->tk_status
) {
3974 case -NFS4ERR_DELEG_REVOKED
:
3975 case -NFS4ERR_ADMIN_REVOKED
:
3976 case -NFS4ERR_BAD_STATEID
:
3979 nfs_remove_bad_delegation(state
->inode
);
3980 case -NFS4ERR_OPENMODE
:
3983 nfs4_schedule_stateid_recovery(server
, state
);
3984 goto wait_on_recovery
;
3985 case -NFS4ERR_EXPIRED
:
3987 nfs4_schedule_stateid_recovery(server
, state
);
3988 case -NFS4ERR_STALE_STATEID
:
3989 case -NFS4ERR_STALE_CLIENTID
:
3990 nfs4_schedule_lease_recovery(clp
);
3991 goto wait_on_recovery
;
3992 #if defined(CONFIG_NFS_V4_1)
3993 case -NFS4ERR_BADSESSION
:
3994 case -NFS4ERR_BADSLOT
:
3995 case -NFS4ERR_BAD_HIGH_SLOT
:
3996 case -NFS4ERR_DEADSESSION
:
3997 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
3998 case -NFS4ERR_SEQ_FALSE_RETRY
:
3999 case -NFS4ERR_SEQ_MISORDERED
:
4000 dprintk("%s ERROR %d, Reset session\n", __func__
,
4002 nfs4_schedule_session_recovery(clp
->cl_session
, task
->tk_status
);
4003 task
->tk_status
= 0;
4005 #endif /* CONFIG_NFS_V4_1 */
4006 case -NFS4ERR_DELAY
:
4007 nfs_inc_server_stats(server
, NFSIOS_DELAY
);
4008 case -NFS4ERR_GRACE
:
4009 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
4010 task
->tk_status
= 0;
4012 case -NFS4ERR_RETRY_UNCACHED_REP
:
4013 case -NFS4ERR_OLD_STATEID
:
4014 task
->tk_status
= 0;
4017 task
->tk_status
= nfs4_map_errors(task
->tk_status
);
4020 rpc_sleep_on(&clp
->cl_rpcwaitq
, task
, NULL
);
4021 if (test_bit(NFS4CLNT_MANAGER_RUNNING
, &clp
->cl_state
) == 0)
4022 rpc_wake_up_queued_task(&clp
->cl_rpcwaitq
, task
);
4023 task
->tk_status
= 0;
4027 static void nfs4_init_boot_verifier(const struct nfs_client
*clp
,
4028 nfs4_verifier
*bootverf
)
4032 if (test_bit(NFS4CLNT_PURGE_STATE
, &clp
->cl_state
)) {
4033 /* An impossible timestamp guarantees this value
4034 * will never match a generated boot time. */
4036 verf
[1] = (__be32
)(NSEC_PER_SEC
+ 1);
4038 struct nfs_net
*nn
= net_generic(clp
->cl_net
, nfs_net_id
);
4039 verf
[0] = (__be32
)nn
->boot_time
.tv_sec
;
4040 verf
[1] = (__be32
)nn
->boot_time
.tv_nsec
;
4042 memcpy(bootverf
->data
, verf
, sizeof(bootverf
->data
));
4046 nfs4_init_nonuniform_client_string(const struct nfs_client
*clp
,
4047 char *buf
, size_t len
)
4049 unsigned int result
;
4052 result
= scnprintf(buf
, len
, "Linux NFSv4.0 %s/%s %s",
4054 rpc_peeraddr2str(clp
->cl_rpcclient
,
4056 rpc_peeraddr2str(clp
->cl_rpcclient
,
4057 RPC_DISPLAY_PROTO
));
4063 nfs4_init_uniform_client_string(const struct nfs_client
*clp
,
4064 char *buf
, size_t len
)
4066 char *nodename
= clp
->cl_rpcclient
->cl_nodename
;
4068 if (nfs4_client_id_uniquifier
[0] != '\0')
4069 nodename
= nfs4_client_id_uniquifier
;
4070 return scnprintf(buf
, len
, "Linux NFSv%u.%u %s",
4071 clp
->rpc_ops
->version
, clp
->cl_minorversion
,
4076 * nfs4_proc_setclientid - Negotiate client ID
4077 * @clp: state data structure
4078 * @program: RPC program for NFSv4 callback service
4079 * @port: IP port number for NFS4 callback service
4080 * @cred: RPC credential to use for this call
4081 * @res: where to place the result
4083 * Returns zero, a negative errno, or a negative NFS4ERR status code.
4085 int nfs4_proc_setclientid(struct nfs_client
*clp
, u32 program
,
4086 unsigned short port
, struct rpc_cred
*cred
,
4087 struct nfs4_setclientid_res
*res
)
4089 nfs4_verifier sc_verifier
;
4090 struct nfs4_setclientid setclientid
= {
4091 .sc_verifier
= &sc_verifier
,
4093 .sc_cb_ident
= clp
->cl_cb_ident
,
4095 struct rpc_message msg
= {
4096 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETCLIENTID
],
4097 .rpc_argp
= &setclientid
,
4103 /* nfs_client_id4 */
4104 nfs4_init_boot_verifier(clp
, &sc_verifier
);
4105 if (test_bit(NFS_CS_MIGRATION
, &clp
->cl_flags
))
4106 setclientid
.sc_name_len
=
4107 nfs4_init_uniform_client_string(clp
,
4108 setclientid
.sc_name
,
4109 sizeof(setclientid
.sc_name
));
4111 setclientid
.sc_name_len
=
4112 nfs4_init_nonuniform_client_string(clp
,
4113 setclientid
.sc_name
,
4114 sizeof(setclientid
.sc_name
));
4117 setclientid
.sc_netid_len
= scnprintf(setclientid
.sc_netid
,
4118 sizeof(setclientid
.sc_netid
),
4119 rpc_peeraddr2str(clp
->cl_rpcclient
,
4120 RPC_DISPLAY_NETID
));
4122 setclientid
.sc_uaddr_len
= scnprintf(setclientid
.sc_uaddr
,
4123 sizeof(setclientid
.sc_uaddr
), "%s.%u.%u",
4124 clp
->cl_ipaddr
, port
>> 8, port
& 255);
4126 dprintk("NFS call setclientid auth=%s, '%.*s'\n",
4127 clp
->cl_rpcclient
->cl_auth
->au_ops
->au_name
,
4128 setclientid
.sc_name_len
, setclientid
.sc_name
);
4129 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
4130 dprintk("NFS reply setclientid: %d\n", status
);
4135 * nfs4_proc_setclientid_confirm - Confirm client ID
4136 * @clp: state data structure
4137 * @res: result of a previous SETCLIENTID
4138 * @cred: RPC credential to use for this call
4140 * Returns zero, a negative errno, or a negative NFS4ERR status code.
4142 int nfs4_proc_setclientid_confirm(struct nfs_client
*clp
,
4143 struct nfs4_setclientid_res
*arg
,
4144 struct rpc_cred
*cred
)
4146 struct nfs_fsinfo fsinfo
;
4147 struct rpc_message msg
= {
4148 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETCLIENTID_CONFIRM
],
4150 .rpc_resp
= &fsinfo
,
4156 dprintk("NFS call setclientid_confirm auth=%s, (client ID %llx)\n",
4157 clp
->cl_rpcclient
->cl_auth
->au_ops
->au_name
,
4160 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
4162 spin_lock(&clp
->cl_lock
);
4163 clp
->cl_lease_time
= fsinfo
.lease_time
* HZ
;
4164 clp
->cl_last_renewal
= now
;
4165 spin_unlock(&clp
->cl_lock
);
4167 dprintk("NFS reply setclientid_confirm: %d\n", status
);
4171 struct nfs4_delegreturndata
{
4172 struct nfs4_delegreturnargs args
;
4173 struct nfs4_delegreturnres res
;
4175 nfs4_stateid stateid
;
4176 unsigned long timestamp
;
4177 struct nfs_fattr fattr
;
4181 static void nfs4_delegreturn_done(struct rpc_task
*task
, void *calldata
)
4183 struct nfs4_delegreturndata
*data
= calldata
;
4185 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
4188 switch (task
->tk_status
) {
4189 case -NFS4ERR_STALE_STATEID
:
4190 case -NFS4ERR_EXPIRED
:
4192 renew_lease(data
->res
.server
, data
->timestamp
);
4195 if (nfs4_async_handle_error(task
, data
->res
.server
, NULL
) ==
4197 rpc_restart_call_prepare(task
);
4201 data
->rpc_status
= task
->tk_status
;
4204 static void nfs4_delegreturn_release(void *calldata
)
4209 #if defined(CONFIG_NFS_V4_1)
4210 static void nfs4_delegreturn_prepare(struct rpc_task
*task
, void *data
)
4212 struct nfs4_delegreturndata
*d_data
;
4214 d_data
= (struct nfs4_delegreturndata
*)data
;
4216 nfs4_setup_sequence(d_data
->res
.server
,
4217 &d_data
->args
.seq_args
,
4218 &d_data
->res
.seq_res
,
4221 #endif /* CONFIG_NFS_V4_1 */
4223 static const struct rpc_call_ops nfs4_delegreturn_ops
= {
4224 #if defined(CONFIG_NFS_V4_1)
4225 .rpc_call_prepare
= nfs4_delegreturn_prepare
,
4226 #endif /* CONFIG_NFS_V4_1 */
4227 .rpc_call_done
= nfs4_delegreturn_done
,
4228 .rpc_release
= nfs4_delegreturn_release
,
4231 static int _nfs4_proc_delegreturn(struct inode
*inode
, struct rpc_cred
*cred
, const nfs4_stateid
*stateid
, int issync
)
4233 struct nfs4_delegreturndata
*data
;
4234 struct nfs_server
*server
= NFS_SERVER(inode
);
4235 struct rpc_task
*task
;
4236 struct rpc_message msg
= {
4237 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DELEGRETURN
],
4240 struct rpc_task_setup task_setup_data
= {
4241 .rpc_client
= server
->client
,
4242 .rpc_message
= &msg
,
4243 .callback_ops
= &nfs4_delegreturn_ops
,
4244 .flags
= RPC_TASK_ASYNC
,
4248 data
= kzalloc(sizeof(*data
), GFP_NOFS
);
4251 nfs41_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
4252 data
->args
.fhandle
= &data
->fh
;
4253 data
->args
.stateid
= &data
->stateid
;
4254 data
->args
.bitmask
= server
->cache_consistency_bitmask
;
4255 nfs_copy_fh(&data
->fh
, NFS_FH(inode
));
4256 nfs4_stateid_copy(&data
->stateid
, stateid
);
4257 data
->res
.fattr
= &data
->fattr
;
4258 data
->res
.server
= server
;
4259 nfs_fattr_init(data
->res
.fattr
);
4260 data
->timestamp
= jiffies
;
4261 data
->rpc_status
= 0;
4263 task_setup_data
.callback_data
= data
;
4264 msg
.rpc_argp
= &data
->args
;
4265 msg
.rpc_resp
= &data
->res
;
4266 task
= rpc_run_task(&task_setup_data
);
4268 return PTR_ERR(task
);
4271 status
= nfs4_wait_for_completion_rpc_task(task
);
4274 status
= data
->rpc_status
;
4276 nfs_post_op_update_inode_force_wcc(inode
, &data
->fattr
);
4278 nfs_refresh_inode(inode
, &data
->fattr
);
4284 int nfs4_proc_delegreturn(struct inode
*inode
, struct rpc_cred
*cred
, const nfs4_stateid
*stateid
, int issync
)
4286 struct nfs_server
*server
= NFS_SERVER(inode
);
4287 struct nfs4_exception exception
= { };
4290 err
= _nfs4_proc_delegreturn(inode
, cred
, stateid
, issync
);
4292 case -NFS4ERR_STALE_STATEID
:
4293 case -NFS4ERR_EXPIRED
:
4297 err
= nfs4_handle_exception(server
, err
, &exception
);
4298 } while (exception
.retry
);
4302 #define NFS4_LOCK_MINTIMEOUT (1 * HZ)
4303 #define NFS4_LOCK_MAXTIMEOUT (30 * HZ)
4306 * sleep, with exponential backoff, and retry the LOCK operation.
4308 static unsigned long
4309 nfs4_set_lock_task_retry(unsigned long timeout
)
4311 freezable_schedule_timeout_killable(timeout
);
4313 if (timeout
> NFS4_LOCK_MAXTIMEOUT
)
4314 return NFS4_LOCK_MAXTIMEOUT
;
4318 static int _nfs4_proc_getlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
4320 struct inode
*inode
= state
->inode
;
4321 struct nfs_server
*server
= NFS_SERVER(inode
);
4322 struct nfs_client
*clp
= server
->nfs_client
;
4323 struct nfs_lockt_args arg
= {
4324 .fh
= NFS_FH(inode
),
4327 struct nfs_lockt_res res
= {
4330 struct rpc_message msg
= {
4331 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCKT
],
4334 .rpc_cred
= state
->owner
->so_cred
,
4336 struct nfs4_lock_state
*lsp
;
4339 arg
.lock_owner
.clientid
= clp
->cl_clientid
;
4340 status
= nfs4_set_lock_state(state
, request
);
4343 lsp
= request
->fl_u
.nfs4_fl
.owner
;
4344 arg
.lock_owner
.id
= lsp
->ls_seqid
.owner_id
;
4345 arg
.lock_owner
.s_dev
= server
->s_dev
;
4346 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
4349 request
->fl_type
= F_UNLCK
;
4351 case -NFS4ERR_DENIED
:
4354 request
->fl_ops
->fl_release_private(request
);
4359 static int nfs4_proc_getlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
4361 struct nfs4_exception exception
= { };
4365 err
= nfs4_handle_exception(NFS_SERVER(state
->inode
),
4366 _nfs4_proc_getlk(state
, cmd
, request
),
4368 } while (exception
.retry
);
4372 static int do_vfs_lock(struct file
*file
, struct file_lock
*fl
)
4375 switch (fl
->fl_flags
& (FL_POSIX
|FL_FLOCK
)) {
4377 res
= posix_lock_file_wait(file
, fl
);
4380 res
= flock_lock_file_wait(file
, fl
);
4388 struct nfs4_unlockdata
{
4389 struct nfs_locku_args arg
;
4390 struct nfs_locku_res res
;
4391 struct nfs4_lock_state
*lsp
;
4392 struct nfs_open_context
*ctx
;
4393 struct file_lock fl
;
4394 const struct nfs_server
*server
;
4395 unsigned long timestamp
;
4398 static struct nfs4_unlockdata
*nfs4_alloc_unlockdata(struct file_lock
*fl
,
4399 struct nfs_open_context
*ctx
,
4400 struct nfs4_lock_state
*lsp
,
4401 struct nfs_seqid
*seqid
)
4403 struct nfs4_unlockdata
*p
;
4404 struct inode
*inode
= lsp
->ls_state
->inode
;
4406 p
= kzalloc(sizeof(*p
), GFP_NOFS
);
4409 p
->arg
.fh
= NFS_FH(inode
);
4411 p
->arg
.seqid
= seqid
;
4412 p
->res
.seqid
= seqid
;
4413 p
->arg
.stateid
= &lsp
->ls_stateid
;
4415 atomic_inc(&lsp
->ls_count
);
4416 /* Ensure we don't close file until we're done freeing locks! */
4417 p
->ctx
= get_nfs_open_context(ctx
);
4418 memcpy(&p
->fl
, fl
, sizeof(p
->fl
));
4419 p
->server
= NFS_SERVER(inode
);
4423 static void nfs4_locku_release_calldata(void *data
)
4425 struct nfs4_unlockdata
*calldata
= data
;
4426 nfs_free_seqid(calldata
->arg
.seqid
);
4427 nfs4_put_lock_state(calldata
->lsp
);
4428 put_nfs_open_context(calldata
->ctx
);
4432 static void nfs4_locku_done(struct rpc_task
*task
, void *data
)
4434 struct nfs4_unlockdata
*calldata
= data
;
4436 if (!nfs4_sequence_done(task
, &calldata
->res
.seq_res
))
4438 switch (task
->tk_status
) {
4440 nfs4_stateid_copy(&calldata
->lsp
->ls_stateid
,
4441 &calldata
->res
.stateid
);
4442 renew_lease(calldata
->server
, calldata
->timestamp
);
4444 case -NFS4ERR_BAD_STATEID
:
4445 case -NFS4ERR_OLD_STATEID
:
4446 case -NFS4ERR_STALE_STATEID
:
4447 case -NFS4ERR_EXPIRED
:
4450 if (nfs4_async_handle_error(task
, calldata
->server
, NULL
) == -EAGAIN
)
4451 rpc_restart_call_prepare(task
);
4453 nfs_release_seqid(calldata
->arg
.seqid
);
4456 static void nfs4_locku_prepare(struct rpc_task
*task
, void *data
)
4458 struct nfs4_unlockdata
*calldata
= data
;
4460 if (nfs_wait_on_sequence(calldata
->arg
.seqid
, task
) != 0)
4462 if (test_bit(NFS_LOCK_INITIALIZED
, &calldata
->lsp
->ls_flags
) == 0) {
4463 /* Note: exit _without_ running nfs4_locku_done */
4466 calldata
->timestamp
= jiffies
;
4467 if (nfs4_setup_sequence(calldata
->server
,
4468 &calldata
->arg
.seq_args
,
4469 &calldata
->res
.seq_res
,
4471 nfs_release_seqid(calldata
->arg
.seqid
);
4474 task
->tk_action
= NULL
;
4476 nfs4_sequence_done(task
, &calldata
->res
.seq_res
);
4479 static const struct rpc_call_ops nfs4_locku_ops
= {
4480 .rpc_call_prepare
= nfs4_locku_prepare
,
4481 .rpc_call_done
= nfs4_locku_done
,
4482 .rpc_release
= nfs4_locku_release_calldata
,
4485 static struct rpc_task
*nfs4_do_unlck(struct file_lock
*fl
,
4486 struct nfs_open_context
*ctx
,
4487 struct nfs4_lock_state
*lsp
,
4488 struct nfs_seqid
*seqid
)
4490 struct nfs4_unlockdata
*data
;
4491 struct rpc_message msg
= {
4492 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCKU
],
4493 .rpc_cred
= ctx
->cred
,
4495 struct rpc_task_setup task_setup_data
= {
4496 .rpc_client
= NFS_CLIENT(lsp
->ls_state
->inode
),
4497 .rpc_message
= &msg
,
4498 .callback_ops
= &nfs4_locku_ops
,
4499 .workqueue
= nfsiod_workqueue
,
4500 .flags
= RPC_TASK_ASYNC
,
4503 /* Ensure this is an unlock - when canceling a lock, the
4504 * canceled lock is passed in, and it won't be an unlock.
4506 fl
->fl_type
= F_UNLCK
;
4508 data
= nfs4_alloc_unlockdata(fl
, ctx
, lsp
, seqid
);
4510 nfs_free_seqid(seqid
);
4511 return ERR_PTR(-ENOMEM
);
4514 nfs41_init_sequence(&data
->arg
.seq_args
, &data
->res
.seq_res
, 1);
4515 msg
.rpc_argp
= &data
->arg
;
4516 msg
.rpc_resp
= &data
->res
;
4517 task_setup_data
.callback_data
= data
;
4518 return rpc_run_task(&task_setup_data
);
4521 static int nfs4_proc_unlck(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
4523 struct inode
*inode
= state
->inode
;
4524 struct nfs4_state_owner
*sp
= state
->owner
;
4525 struct nfs_inode
*nfsi
= NFS_I(inode
);
4526 struct nfs_seqid
*seqid
;
4527 struct nfs4_lock_state
*lsp
;
4528 struct rpc_task
*task
;
4530 unsigned char fl_flags
= request
->fl_flags
;
4532 status
= nfs4_set_lock_state(state
, request
);
4533 /* Unlock _before_ we do the RPC call */
4534 request
->fl_flags
|= FL_EXISTS
;
4535 /* Exclude nfs_delegation_claim_locks() */
4536 mutex_lock(&sp
->so_delegreturn_mutex
);
4537 /* Exclude nfs4_reclaim_open_stateid() - note nesting! */
4538 down_read(&nfsi
->rwsem
);
4539 if (do_vfs_lock(request
->fl_file
, request
) == -ENOENT
) {
4540 up_read(&nfsi
->rwsem
);
4541 mutex_unlock(&sp
->so_delegreturn_mutex
);
4544 up_read(&nfsi
->rwsem
);
4545 mutex_unlock(&sp
->so_delegreturn_mutex
);
4548 /* Is this a delegated lock? */
4549 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
))
4551 lsp
= request
->fl_u
.nfs4_fl
.owner
;
4552 seqid
= nfs_alloc_seqid(&lsp
->ls_seqid
, GFP_KERNEL
);
4556 task
= nfs4_do_unlck(request
, nfs_file_open_context(request
->fl_file
), lsp
, seqid
);
4557 status
= PTR_ERR(task
);
4560 status
= nfs4_wait_for_completion_rpc_task(task
);
4563 request
->fl_flags
= fl_flags
;
4567 struct nfs4_lockdata
{
4568 struct nfs_lock_args arg
;
4569 struct nfs_lock_res res
;
4570 struct nfs4_lock_state
*lsp
;
4571 struct nfs_open_context
*ctx
;
4572 struct file_lock fl
;
4573 unsigned long timestamp
;
4576 struct nfs_server
*server
;
4579 static struct nfs4_lockdata
*nfs4_alloc_lockdata(struct file_lock
*fl
,
4580 struct nfs_open_context
*ctx
, struct nfs4_lock_state
*lsp
,
4583 struct nfs4_lockdata
*p
;
4584 struct inode
*inode
= lsp
->ls_state
->inode
;
4585 struct nfs_server
*server
= NFS_SERVER(inode
);
4587 p
= kzalloc(sizeof(*p
), gfp_mask
);
4591 p
->arg
.fh
= NFS_FH(inode
);
4593 p
->arg
.open_seqid
= nfs_alloc_seqid(&lsp
->ls_state
->owner
->so_seqid
, gfp_mask
);
4594 if (p
->arg
.open_seqid
== NULL
)
4596 p
->arg
.lock_seqid
= nfs_alloc_seqid(&lsp
->ls_seqid
, gfp_mask
);
4597 if (p
->arg
.lock_seqid
== NULL
)
4598 goto out_free_seqid
;
4599 p
->arg
.lock_stateid
= &lsp
->ls_stateid
;
4600 p
->arg
.lock_owner
.clientid
= server
->nfs_client
->cl_clientid
;
4601 p
->arg
.lock_owner
.id
= lsp
->ls_seqid
.owner_id
;
4602 p
->arg
.lock_owner
.s_dev
= server
->s_dev
;
4603 p
->res
.lock_seqid
= p
->arg
.lock_seqid
;
4606 atomic_inc(&lsp
->ls_count
);
4607 p
->ctx
= get_nfs_open_context(ctx
);
4608 memcpy(&p
->fl
, fl
, sizeof(p
->fl
));
4611 nfs_free_seqid(p
->arg
.open_seqid
);
4617 static void nfs4_lock_prepare(struct rpc_task
*task
, void *calldata
)
4619 struct nfs4_lockdata
*data
= calldata
;
4620 struct nfs4_state
*state
= data
->lsp
->ls_state
;
4622 dprintk("%s: begin!\n", __func__
);
4623 if (nfs_wait_on_sequence(data
->arg
.lock_seqid
, task
) != 0)
4625 /* Do we need to do an open_to_lock_owner? */
4626 if (!(data
->arg
.lock_seqid
->sequence
->flags
& NFS_SEQID_CONFIRMED
)) {
4627 if (nfs_wait_on_sequence(data
->arg
.open_seqid
, task
) != 0) {
4628 goto out_release_lock_seqid
;
4630 data
->arg
.open_stateid
= &state
->stateid
;
4631 data
->arg
.new_lock_owner
= 1;
4632 data
->res
.open_seqid
= data
->arg
.open_seqid
;
4634 data
->arg
.new_lock_owner
= 0;
4635 data
->timestamp
= jiffies
;
4636 if (nfs4_setup_sequence(data
->server
,
4637 &data
->arg
.seq_args
,
4641 nfs_release_seqid(data
->arg
.open_seqid
);
4642 out_release_lock_seqid
:
4643 nfs_release_seqid(data
->arg
.lock_seqid
);
4645 nfs4_sequence_done(task
, &data
->res
.seq_res
);
4646 dprintk("%s: done!, ret = %d\n", __func__
, data
->rpc_status
);
4649 static void nfs4_lock_done(struct rpc_task
*task
, void *calldata
)
4651 struct nfs4_lockdata
*data
= calldata
;
4653 dprintk("%s: begin!\n", __func__
);
4655 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
4658 data
->rpc_status
= task
->tk_status
;
4659 if (data
->arg
.new_lock_owner
!= 0) {
4660 if (data
->rpc_status
== 0)
4661 nfs_confirm_seqid(&data
->lsp
->ls_seqid
, 0);
4665 if (data
->rpc_status
== 0) {
4666 nfs4_stateid_copy(&data
->lsp
->ls_stateid
, &data
->res
.stateid
);
4667 set_bit(NFS_LOCK_INITIALIZED
, &data
->lsp
->ls_flags
);
4668 renew_lease(NFS_SERVER(data
->ctx
->dentry
->d_inode
), data
->timestamp
);
4671 dprintk("%s: done, ret = %d!\n", __func__
, data
->rpc_status
);
4674 static void nfs4_lock_release(void *calldata
)
4676 struct nfs4_lockdata
*data
= calldata
;
4678 dprintk("%s: begin!\n", __func__
);
4679 nfs_free_seqid(data
->arg
.open_seqid
);
4680 if (data
->cancelled
!= 0) {
4681 struct rpc_task
*task
;
4682 task
= nfs4_do_unlck(&data
->fl
, data
->ctx
, data
->lsp
,
4683 data
->arg
.lock_seqid
);
4685 rpc_put_task_async(task
);
4686 dprintk("%s: cancelling lock!\n", __func__
);
4688 nfs_free_seqid(data
->arg
.lock_seqid
);
4689 nfs4_put_lock_state(data
->lsp
);
4690 put_nfs_open_context(data
->ctx
);
4692 dprintk("%s: done!\n", __func__
);
4695 static const struct rpc_call_ops nfs4_lock_ops
= {
4696 .rpc_call_prepare
= nfs4_lock_prepare
,
4697 .rpc_call_done
= nfs4_lock_done
,
4698 .rpc_release
= nfs4_lock_release
,
4701 static void nfs4_handle_setlk_error(struct nfs_server
*server
, struct nfs4_lock_state
*lsp
, int new_lock_owner
, int error
)
4704 case -NFS4ERR_ADMIN_REVOKED
:
4705 case -NFS4ERR_BAD_STATEID
:
4706 lsp
->ls_seqid
.flags
&= ~NFS_SEQID_CONFIRMED
;
4707 if (new_lock_owner
!= 0 ||
4708 test_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
) != 0)
4709 nfs4_schedule_stateid_recovery(server
, lsp
->ls_state
);
4711 case -NFS4ERR_STALE_STATEID
:
4712 lsp
->ls_seqid
.flags
&= ~NFS_SEQID_CONFIRMED
;
4713 case -NFS4ERR_EXPIRED
:
4714 nfs4_schedule_lease_recovery(server
->nfs_client
);
4718 static int _nfs4_do_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*fl
, int recovery_type
)
4720 struct nfs4_lockdata
*data
;
4721 struct rpc_task
*task
;
4722 struct rpc_message msg
= {
4723 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCK
],
4724 .rpc_cred
= state
->owner
->so_cred
,
4726 struct rpc_task_setup task_setup_data
= {
4727 .rpc_client
= NFS_CLIENT(state
->inode
),
4728 .rpc_message
= &msg
,
4729 .callback_ops
= &nfs4_lock_ops
,
4730 .workqueue
= nfsiod_workqueue
,
4731 .flags
= RPC_TASK_ASYNC
,
4735 dprintk("%s: begin!\n", __func__
);
4736 data
= nfs4_alloc_lockdata(fl
, nfs_file_open_context(fl
->fl_file
),
4737 fl
->fl_u
.nfs4_fl
.owner
,
4738 recovery_type
== NFS_LOCK_NEW
? GFP_KERNEL
: GFP_NOFS
);
4742 data
->arg
.block
= 1;
4743 nfs41_init_sequence(&data
->arg
.seq_args
, &data
->res
.seq_res
, 1);
4744 msg
.rpc_argp
= &data
->arg
;
4745 msg
.rpc_resp
= &data
->res
;
4746 task_setup_data
.callback_data
= data
;
4747 if (recovery_type
> NFS_LOCK_NEW
) {
4748 if (recovery_type
== NFS_LOCK_RECLAIM
)
4749 data
->arg
.reclaim
= NFS_LOCK_RECLAIM
;
4750 nfs4_set_sequence_privileged(&data
->arg
.seq_args
);
4752 task
= rpc_run_task(&task_setup_data
);
4754 return PTR_ERR(task
);
4755 ret
= nfs4_wait_for_completion_rpc_task(task
);
4757 ret
= data
->rpc_status
;
4759 nfs4_handle_setlk_error(data
->server
, data
->lsp
,
4760 data
->arg
.new_lock_owner
, ret
);
4762 data
->cancelled
= 1;
4764 dprintk("%s: done, ret = %d!\n", __func__
, ret
);
4768 static int nfs4_lock_reclaim(struct nfs4_state
*state
, struct file_lock
*request
)
4770 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
4771 struct nfs4_exception exception
= {
4772 .inode
= state
->inode
,
4777 /* Cache the lock if possible... */
4778 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) != 0)
4780 err
= _nfs4_do_setlk(state
, F_SETLK
, request
, NFS_LOCK_RECLAIM
);
4781 if (err
!= -NFS4ERR_DELAY
)
4783 nfs4_handle_exception(server
, err
, &exception
);
4784 } while (exception
.retry
);
4788 static int nfs4_lock_expired(struct nfs4_state
*state
, struct file_lock
*request
)
4790 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
4791 struct nfs4_exception exception
= {
4792 .inode
= state
->inode
,
4796 err
= nfs4_set_lock_state(state
, request
);
4800 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) != 0)
4802 err
= _nfs4_do_setlk(state
, F_SETLK
, request
, NFS_LOCK_EXPIRED
);
4806 case -NFS4ERR_GRACE
:
4807 case -NFS4ERR_DELAY
:
4808 nfs4_handle_exception(server
, err
, &exception
);
4811 } while (exception
.retry
);
4816 #if defined(CONFIG_NFS_V4_1)
4818 * nfs41_check_expired_locks - possibly free a lock stateid
4820 * @state: NFSv4 state for an inode
4822 * Returns NFS_OK if recovery for this stateid is now finished.
4823 * Otherwise a negative NFS4ERR value is returned.
4825 static int nfs41_check_expired_locks(struct nfs4_state
*state
)
4827 int status
, ret
= -NFS4ERR_BAD_STATEID
;
4828 struct nfs4_lock_state
*lsp
;
4829 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
4831 list_for_each_entry(lsp
, &state
->lock_states
, ls_locks
) {
4832 if (test_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
)) {
4833 status
= nfs41_test_stateid(server
, &lsp
->ls_stateid
);
4834 if (status
!= NFS_OK
) {
4835 /* Free the stateid unless the server
4836 * informs us the stateid is unrecognized. */
4837 if (status
!= -NFS4ERR_BAD_STATEID
)
4838 nfs41_free_stateid(server
,
4840 clear_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
);
4849 static int nfs41_lock_expired(struct nfs4_state
*state
, struct file_lock
*request
)
4851 int status
= NFS_OK
;
4853 if (test_bit(LK_STATE_IN_USE
, &state
->flags
))
4854 status
= nfs41_check_expired_locks(state
);
4855 if (status
!= NFS_OK
)
4856 status
= nfs4_lock_expired(state
, request
);
4861 static int _nfs4_proc_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
4863 struct nfs4_state_owner
*sp
= state
->owner
;
4864 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
4865 unsigned char fl_flags
= request
->fl_flags
;
4867 int status
= -ENOLCK
;
4869 if ((fl_flags
& FL_POSIX
) &&
4870 !test_bit(NFS_STATE_POSIX_LOCKS
, &state
->flags
))
4872 /* Is this a delegated open? */
4873 status
= nfs4_set_lock_state(state
, request
);
4876 request
->fl_flags
|= FL_ACCESS
;
4877 status
= do_vfs_lock(request
->fl_file
, request
);
4880 down_read(&nfsi
->rwsem
);
4881 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
)) {
4882 /* Yes: cache locks! */
4883 /* ...but avoid races with delegation recall... */
4884 request
->fl_flags
= fl_flags
& ~FL_SLEEP
;
4885 status
= do_vfs_lock(request
->fl_file
, request
);
4888 seq
= raw_seqcount_begin(&sp
->so_reclaim_seqcount
);
4889 up_read(&nfsi
->rwsem
);
4890 status
= _nfs4_do_setlk(state
, cmd
, request
, NFS_LOCK_NEW
);
4893 down_read(&nfsi
->rwsem
);
4894 if (read_seqcount_retry(&sp
->so_reclaim_seqcount
, seq
)) {
4895 status
= -NFS4ERR_DELAY
;
4898 /* Note: we always want to sleep here! */
4899 request
->fl_flags
= fl_flags
| FL_SLEEP
;
4900 if (do_vfs_lock(request
->fl_file
, request
) < 0)
4901 printk(KERN_WARNING
"NFS: %s: VFS is out of sync with lock "
4902 "manager!\n", __func__
);
4904 up_read(&nfsi
->rwsem
);
4906 request
->fl_flags
= fl_flags
;
4910 static int nfs4_proc_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
4912 struct nfs4_exception exception
= {
4914 .inode
= state
->inode
,
4919 err
= _nfs4_proc_setlk(state
, cmd
, request
);
4920 if (err
== -NFS4ERR_DENIED
)
4922 err
= nfs4_handle_exception(NFS_SERVER(state
->inode
),
4924 } while (exception
.retry
);
4929 nfs4_proc_lock(struct file
*filp
, int cmd
, struct file_lock
*request
)
4931 struct nfs_open_context
*ctx
;
4932 struct nfs4_state
*state
;
4933 unsigned long timeout
= NFS4_LOCK_MINTIMEOUT
;
4936 /* verify open state */
4937 ctx
= nfs_file_open_context(filp
);
4940 if (request
->fl_start
< 0 || request
->fl_end
< 0)
4943 if (IS_GETLK(cmd
)) {
4945 return nfs4_proc_getlk(state
, F_GETLK
, request
);
4949 if (!(IS_SETLK(cmd
) || IS_SETLKW(cmd
)))
4952 if (request
->fl_type
== F_UNLCK
) {
4954 return nfs4_proc_unlck(state
, cmd
, request
);
4961 * Don't rely on the VFS having checked the file open mode,
4962 * since it won't do this for flock() locks.
4964 switch (request
->fl_type
) {
4966 if (!(filp
->f_mode
& FMODE_READ
))
4970 if (!(filp
->f_mode
& FMODE_WRITE
))
4975 status
= nfs4_proc_setlk(state
, cmd
, request
);
4976 if ((status
!= -EAGAIN
) || IS_SETLK(cmd
))
4978 timeout
= nfs4_set_lock_task_retry(timeout
);
4979 status
= -ERESTARTSYS
;
4982 } while(status
< 0);
4986 int nfs4_lock_delegation_recall(struct nfs4_state
*state
, struct file_lock
*fl
)
4988 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
4989 struct nfs4_exception exception
= { };
4992 err
= nfs4_set_lock_state(state
, fl
);
4996 err
= _nfs4_do_setlk(state
, F_SETLK
, fl
, NFS_LOCK_NEW
);
4999 printk(KERN_ERR
"NFS: %s: unhandled error "
5000 "%d.\n", __func__
, err
);
5004 case -NFS4ERR_STALE_CLIENTID
:
5005 case -NFS4ERR_STALE_STATEID
:
5006 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
5007 case -NFS4ERR_EXPIRED
:
5008 nfs4_schedule_lease_recovery(server
->nfs_client
);
5011 case -NFS4ERR_BADSESSION
:
5012 case -NFS4ERR_BADSLOT
:
5013 case -NFS4ERR_BAD_HIGH_SLOT
:
5014 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
5015 case -NFS4ERR_DEADSESSION
:
5016 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
5017 nfs4_schedule_session_recovery(server
->nfs_client
->cl_session
, err
);
5020 case -NFS4ERR_DELEG_REVOKED
:
5021 case -NFS4ERR_ADMIN_REVOKED
:
5022 case -NFS4ERR_BAD_STATEID
:
5023 case -NFS4ERR_OPENMODE
:
5024 nfs4_schedule_stateid_recovery(server
, state
);
5028 case -NFS4ERR_DENIED
:
5029 /* kill_proc(fl->fl_pid, SIGLOST, 1); */
5033 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
5034 err
= nfs4_handle_exception(server
, err
, &exception
);
5035 } while (exception
.retry
);
5040 struct nfs_release_lockowner_data
{
5041 struct nfs4_lock_state
*lsp
;
5042 struct nfs_server
*server
;
5043 struct nfs_release_lockowner_args args
;
5046 static void nfs4_release_lockowner_release(void *calldata
)
5048 struct nfs_release_lockowner_data
*data
= calldata
;
5049 nfs4_free_lock_state(data
->server
, data
->lsp
);
5053 static const struct rpc_call_ops nfs4_release_lockowner_ops
= {
5054 .rpc_release
= nfs4_release_lockowner_release
,
5057 int nfs4_release_lockowner(struct nfs4_lock_state
*lsp
)
5059 struct nfs_server
*server
= lsp
->ls_state
->owner
->so_server
;
5060 struct nfs_release_lockowner_data
*data
;
5061 struct rpc_message msg
= {
5062 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RELEASE_LOCKOWNER
],
5065 if (server
->nfs_client
->cl_mvops
->minor_version
!= 0)
5067 data
= kmalloc(sizeof(*data
), GFP_NOFS
);
5071 data
->server
= server
;
5072 data
->args
.lock_owner
.clientid
= server
->nfs_client
->cl_clientid
;
5073 data
->args
.lock_owner
.id
= lsp
->ls_seqid
.owner_id
;
5074 data
->args
.lock_owner
.s_dev
= server
->s_dev
;
5075 msg
.rpc_argp
= &data
->args
;
5076 rpc_call_async(server
->client
, &msg
, 0, &nfs4_release_lockowner_ops
, data
);
5080 #define XATTR_NAME_NFSV4_ACL "system.nfs4_acl"
5082 static int nfs4_xattr_set_nfs4_acl(struct dentry
*dentry
, const char *key
,
5083 const void *buf
, size_t buflen
,
5084 int flags
, int type
)
5086 if (strcmp(key
, "") != 0)
5089 return nfs4_proc_set_acl(dentry
->d_inode
, buf
, buflen
);
5092 static int nfs4_xattr_get_nfs4_acl(struct dentry
*dentry
, const char *key
,
5093 void *buf
, size_t buflen
, int type
)
5095 if (strcmp(key
, "") != 0)
5098 return nfs4_proc_get_acl(dentry
->d_inode
, buf
, buflen
);
5101 static size_t nfs4_xattr_list_nfs4_acl(struct dentry
*dentry
, char *list
,
5102 size_t list_len
, const char *name
,
5103 size_t name_len
, int type
)
5105 size_t len
= sizeof(XATTR_NAME_NFSV4_ACL
);
5107 if (!nfs4_server_supports_acls(NFS_SERVER(dentry
->d_inode
)))
5110 if (list
&& len
<= list_len
)
5111 memcpy(list
, XATTR_NAME_NFSV4_ACL
, len
);
5116 * nfs_fhget will use either the mounted_on_fileid or the fileid
5118 static void nfs_fixup_referral_attributes(struct nfs_fattr
*fattr
)
5120 if (!(((fattr
->valid
& NFS_ATTR_FATTR_MOUNTED_ON_FILEID
) ||
5121 (fattr
->valid
& NFS_ATTR_FATTR_FILEID
)) &&
5122 (fattr
->valid
& NFS_ATTR_FATTR_FSID
) &&
5123 (fattr
->valid
& NFS_ATTR_FATTR_V4_LOCATIONS
)))
5126 fattr
->valid
|= NFS_ATTR_FATTR_TYPE
| NFS_ATTR_FATTR_MODE
|
5127 NFS_ATTR_FATTR_NLINK
| NFS_ATTR_FATTR_V4_REFERRAL
;
5128 fattr
->mode
= S_IFDIR
| S_IRUGO
| S_IXUGO
;
5132 static int _nfs4_proc_fs_locations(struct rpc_clnt
*client
, struct inode
*dir
,
5133 const struct qstr
*name
,
5134 struct nfs4_fs_locations
*fs_locations
,
5137 struct nfs_server
*server
= NFS_SERVER(dir
);
5139 [0] = FATTR4_WORD0_FSID
| FATTR4_WORD0_FS_LOCATIONS
,
5141 struct nfs4_fs_locations_arg args
= {
5142 .dir_fh
= NFS_FH(dir
),
5147 struct nfs4_fs_locations_res res
= {
5148 .fs_locations
= fs_locations
,
5150 struct rpc_message msg
= {
5151 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FS_LOCATIONS
],
5157 dprintk("%s: start\n", __func__
);
5159 /* Ask for the fileid of the absent filesystem if mounted_on_fileid
5160 * is not supported */
5161 if (NFS_SERVER(dir
)->attr_bitmask
[1] & FATTR4_WORD1_MOUNTED_ON_FILEID
)
5162 bitmask
[1] |= FATTR4_WORD1_MOUNTED_ON_FILEID
;
5164 bitmask
[0] |= FATTR4_WORD0_FILEID
;
5166 nfs_fattr_init(&fs_locations
->fattr
);
5167 fs_locations
->server
= server
;
5168 fs_locations
->nlocations
= 0;
5169 status
= nfs4_call_sync(client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
5170 dprintk("%s: returned status = %d\n", __func__
, status
);
5174 int nfs4_proc_fs_locations(struct rpc_clnt
*client
, struct inode
*dir
,
5175 const struct qstr
*name
,
5176 struct nfs4_fs_locations
*fs_locations
,
5179 struct nfs4_exception exception
= { };
5182 err
= nfs4_handle_exception(NFS_SERVER(dir
),
5183 _nfs4_proc_fs_locations(client
, dir
, name
, fs_locations
, page
),
5185 } while (exception
.retry
);
5189 static int _nfs4_proc_secinfo(struct inode
*dir
, const struct qstr
*name
, struct nfs4_secinfo_flavors
*flavors
)
5192 struct nfs4_secinfo_arg args
= {
5193 .dir_fh
= NFS_FH(dir
),
5196 struct nfs4_secinfo_res res
= {
5199 struct rpc_message msg
= {
5200 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SECINFO
],
5205 dprintk("NFS call secinfo %s\n", name
->name
);
5206 status
= nfs4_call_sync(NFS_SERVER(dir
)->client
, NFS_SERVER(dir
), &msg
, &args
.seq_args
, &res
.seq_res
, 0);
5207 dprintk("NFS reply secinfo: %d\n", status
);
5211 int nfs4_proc_secinfo(struct inode
*dir
, const struct qstr
*name
,
5212 struct nfs4_secinfo_flavors
*flavors
)
5214 struct nfs4_exception exception
= { };
5217 err
= nfs4_handle_exception(NFS_SERVER(dir
),
5218 _nfs4_proc_secinfo(dir
, name
, flavors
),
5220 } while (exception
.retry
);
5224 #ifdef CONFIG_NFS_V4_1
5226 * Check the exchange flags returned by the server for invalid flags, having
5227 * both PNFS and NON_PNFS flags set, and not having one of NON_PNFS, PNFS, or
5230 static int nfs4_check_cl_exchange_flags(u32 flags
)
5232 if (flags
& ~EXCHGID4_FLAG_MASK_R
)
5234 if ((flags
& EXCHGID4_FLAG_USE_PNFS_MDS
) &&
5235 (flags
& EXCHGID4_FLAG_USE_NON_PNFS
))
5237 if (!(flags
& (EXCHGID4_FLAG_MASK_PNFS
)))
5241 return -NFS4ERR_INVAL
;
5245 nfs41_same_server_scope(struct nfs41_server_scope
*a
,
5246 struct nfs41_server_scope
*b
)
5248 if (a
->server_scope_sz
== b
->server_scope_sz
&&
5249 memcmp(a
->server_scope
, b
->server_scope
, a
->server_scope_sz
) == 0)
5256 * nfs4_proc_bind_conn_to_session()
5258 * The 4.1 client currently uses the same TCP connection for the
5259 * fore and backchannel.
5261 int nfs4_proc_bind_conn_to_session(struct nfs_client
*clp
, struct rpc_cred
*cred
)
5264 struct nfs41_bind_conn_to_session_res res
;
5265 struct rpc_message msg
= {
5267 &nfs4_procedures
[NFSPROC4_CLNT_BIND_CONN_TO_SESSION
],
5273 dprintk("--> %s\n", __func__
);
5275 res
.session
= kzalloc(sizeof(struct nfs4_session
), GFP_NOFS
);
5276 if (unlikely(res
.session
== NULL
)) {
5281 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
5283 if (memcmp(res
.session
->sess_id
.data
,
5284 clp
->cl_session
->sess_id
.data
, NFS4_MAX_SESSIONID_LEN
)) {
5285 dprintk("NFS: %s: Session ID mismatch\n", __func__
);
5289 if (res
.dir
!= NFS4_CDFS4_BOTH
) {
5290 dprintk("NFS: %s: Unexpected direction from server\n",
5295 if (res
.use_conn_in_rdma_mode
) {
5296 dprintk("NFS: %s: Server returned RDMA mode = true\n",
5305 dprintk("<-- %s status= %d\n", __func__
, status
);
5310 * nfs4_proc_exchange_id()
5312 * Returns zero, a negative errno, or a negative NFS4ERR status code.
5314 * Since the clientid has expired, all compounds using sessions
5315 * associated with the stale clientid will be returning
5316 * NFS4ERR_BADSESSION in the sequence operation, and will therefore
5317 * be in some phase of session reset.
5319 int nfs4_proc_exchange_id(struct nfs_client
*clp
, struct rpc_cred
*cred
)
5321 nfs4_verifier verifier
;
5322 struct nfs41_exchange_id_args args
= {
5323 .verifier
= &verifier
,
5325 .flags
= EXCHGID4_FLAG_SUPP_MOVED_REFER
,
5327 struct nfs41_exchange_id_res res
= {
5331 struct rpc_message msg
= {
5332 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_EXCHANGE_ID
],
5338 nfs4_init_boot_verifier(clp
, &verifier
);
5339 args
.id_len
= nfs4_init_uniform_client_string(clp
, args
.id
,
5341 dprintk("NFS call exchange_id auth=%s, '%.*s'\n",
5342 clp
->cl_rpcclient
->cl_auth
->au_ops
->au_name
,
5343 args
.id_len
, args
.id
);
5345 res
.server_owner
= kzalloc(sizeof(struct nfs41_server_owner
),
5347 if (unlikely(res
.server_owner
== NULL
)) {
5352 res
.server_scope
= kzalloc(sizeof(struct nfs41_server_scope
),
5354 if (unlikely(res
.server_scope
== NULL
)) {
5356 goto out_server_owner
;
5359 res
.impl_id
= kzalloc(sizeof(struct nfs41_impl_id
), GFP_NOFS
);
5360 if (unlikely(res
.impl_id
== NULL
)) {
5362 goto out_server_scope
;
5365 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
5367 status
= nfs4_check_cl_exchange_flags(res
.flags
);
5370 clp
->cl_clientid
= res
.clientid
;
5371 clp
->cl_exchange_flags
= (res
.flags
& ~EXCHGID4_FLAG_CONFIRMED_R
);
5372 if (!(res
.flags
& EXCHGID4_FLAG_CONFIRMED_R
))
5373 clp
->cl_seqid
= res
.seqid
;
5375 kfree(clp
->cl_serverowner
);
5376 clp
->cl_serverowner
= res
.server_owner
;
5377 res
.server_owner
= NULL
;
5379 /* use the most recent implementation id */
5380 kfree(clp
->cl_implid
);
5381 clp
->cl_implid
= res
.impl_id
;
5383 if (clp
->cl_serverscope
!= NULL
&&
5384 !nfs41_same_server_scope(clp
->cl_serverscope
,
5385 res
.server_scope
)) {
5386 dprintk("%s: server_scope mismatch detected\n",
5388 set_bit(NFS4CLNT_SERVER_SCOPE_MISMATCH
, &clp
->cl_state
);
5389 kfree(clp
->cl_serverscope
);
5390 clp
->cl_serverscope
= NULL
;
5393 if (clp
->cl_serverscope
== NULL
) {
5394 clp
->cl_serverscope
= res
.server_scope
;
5401 kfree(res
.server_owner
);
5403 kfree(res
.server_scope
);
5405 if (clp
->cl_implid
!= NULL
)
5406 dprintk("NFS reply exchange_id: Server Implementation ID: "
5407 "domain: %s, name: %s, date: %llu,%u\n",
5408 clp
->cl_implid
->domain
, clp
->cl_implid
->name
,
5409 clp
->cl_implid
->date
.seconds
,
5410 clp
->cl_implid
->date
.nseconds
);
5411 dprintk("NFS reply exchange_id: %d\n", status
);
5415 static int _nfs4_proc_destroy_clientid(struct nfs_client
*clp
,
5416 struct rpc_cred
*cred
)
5418 struct rpc_message msg
= {
5419 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DESTROY_CLIENTID
],
5425 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
5427 dprintk("NFS: Got error %d from the server %s on "
5428 "DESTROY_CLIENTID.", status
, clp
->cl_hostname
);
5432 static int nfs4_proc_destroy_clientid(struct nfs_client
*clp
,
5433 struct rpc_cred
*cred
)
5438 for (loop
= NFS4_MAX_LOOP_ON_RECOVER
; loop
!= 0; loop
--) {
5439 ret
= _nfs4_proc_destroy_clientid(clp
, cred
);
5441 case -NFS4ERR_DELAY
:
5442 case -NFS4ERR_CLIENTID_BUSY
:
5452 int nfs4_destroy_clientid(struct nfs_client
*clp
)
5454 struct rpc_cred
*cred
;
5457 if (clp
->cl_mvops
->minor_version
< 1)
5459 if (clp
->cl_exchange_flags
== 0)
5461 if (clp
->cl_preserve_clid
)
5463 cred
= nfs4_get_exchange_id_cred(clp
);
5464 ret
= nfs4_proc_destroy_clientid(clp
, cred
);
5469 case -NFS4ERR_STALE_CLIENTID
:
5470 clp
->cl_exchange_flags
= 0;
5476 struct nfs4_get_lease_time_data
{
5477 struct nfs4_get_lease_time_args
*args
;
5478 struct nfs4_get_lease_time_res
*res
;
5479 struct nfs_client
*clp
;
5482 static void nfs4_get_lease_time_prepare(struct rpc_task
*task
,
5485 struct nfs4_get_lease_time_data
*data
=
5486 (struct nfs4_get_lease_time_data
*)calldata
;
5488 dprintk("--> %s\n", __func__
);
5489 /* just setup sequence, do not trigger session recovery
5490 since we're invoked within one */
5491 nfs41_setup_sequence(data
->clp
->cl_session
,
5492 &data
->args
->la_seq_args
,
5493 &data
->res
->lr_seq_res
,
5495 dprintk("<-- %s\n", __func__
);
5499 * Called from nfs4_state_manager thread for session setup, so don't recover
5500 * from sequence operation or clientid errors.
5502 static void nfs4_get_lease_time_done(struct rpc_task
*task
, void *calldata
)
5504 struct nfs4_get_lease_time_data
*data
=
5505 (struct nfs4_get_lease_time_data
*)calldata
;
5507 dprintk("--> %s\n", __func__
);
5508 if (!nfs41_sequence_done(task
, &data
->res
->lr_seq_res
))
5510 switch (task
->tk_status
) {
5511 case -NFS4ERR_DELAY
:
5512 case -NFS4ERR_GRACE
:
5513 dprintk("%s Retry: tk_status %d\n", __func__
, task
->tk_status
);
5514 rpc_delay(task
, NFS4_POLL_RETRY_MIN
);
5515 task
->tk_status
= 0;
5517 case -NFS4ERR_RETRY_UNCACHED_REP
:
5518 rpc_restart_call_prepare(task
);
5521 dprintk("<-- %s\n", __func__
);
5524 static const struct rpc_call_ops nfs4_get_lease_time_ops
= {
5525 .rpc_call_prepare
= nfs4_get_lease_time_prepare
,
5526 .rpc_call_done
= nfs4_get_lease_time_done
,
5529 int nfs4_proc_get_lease_time(struct nfs_client
*clp
, struct nfs_fsinfo
*fsinfo
)
5531 struct rpc_task
*task
;
5532 struct nfs4_get_lease_time_args args
;
5533 struct nfs4_get_lease_time_res res
= {
5534 .lr_fsinfo
= fsinfo
,
5536 struct nfs4_get_lease_time_data data
= {
5541 struct rpc_message msg
= {
5542 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GET_LEASE_TIME
],
5546 struct rpc_task_setup task_setup
= {
5547 .rpc_client
= clp
->cl_rpcclient
,
5548 .rpc_message
= &msg
,
5549 .callback_ops
= &nfs4_get_lease_time_ops
,
5550 .callback_data
= &data
,
5551 .flags
= RPC_TASK_TIMEOUT
,
5555 nfs41_init_sequence(&args
.la_seq_args
, &res
.lr_seq_res
, 0);
5556 nfs4_set_sequence_privileged(&args
.la_seq_args
);
5557 dprintk("--> %s\n", __func__
);
5558 task
= rpc_run_task(&task_setup
);
5561 status
= PTR_ERR(task
);
5563 status
= task
->tk_status
;
5566 dprintk("<-- %s return %d\n", __func__
, status
);
5572 * Initialize the values to be used by the client in CREATE_SESSION
5573 * If nfs4_init_session set the fore channel request and response sizes,
5576 * Set the back channel max_resp_sz_cached to zero to force the client to
5577 * always set csa_cachethis to FALSE because the current implementation
5578 * of the back channel DRC only supports caching the CB_SEQUENCE operation.
5580 static void nfs4_init_channel_attrs(struct nfs41_create_session_args
*args
)
5582 struct nfs4_session
*session
= args
->client
->cl_session
;
5583 unsigned int mxrqst_sz
= session
->fc_target_max_rqst_sz
,
5584 mxresp_sz
= session
->fc_target_max_resp_sz
;
5587 mxrqst_sz
= NFS_MAX_FILE_IO_SIZE
;
5589 mxresp_sz
= NFS_MAX_FILE_IO_SIZE
;
5590 /* Fore channel attributes */
5591 args
->fc_attrs
.max_rqst_sz
= mxrqst_sz
;
5592 args
->fc_attrs
.max_resp_sz
= mxresp_sz
;
5593 args
->fc_attrs
.max_ops
= NFS4_MAX_OPS
;
5594 args
->fc_attrs
.max_reqs
= max_session_slots
;
5596 dprintk("%s: Fore Channel : max_rqst_sz=%u max_resp_sz=%u "
5597 "max_ops=%u max_reqs=%u\n",
5599 args
->fc_attrs
.max_rqst_sz
, args
->fc_attrs
.max_resp_sz
,
5600 args
->fc_attrs
.max_ops
, args
->fc_attrs
.max_reqs
);
5602 /* Back channel attributes */
5603 args
->bc_attrs
.max_rqst_sz
= PAGE_SIZE
;
5604 args
->bc_attrs
.max_resp_sz
= PAGE_SIZE
;
5605 args
->bc_attrs
.max_resp_sz_cached
= 0;
5606 args
->bc_attrs
.max_ops
= NFS4_MAX_BACK_CHANNEL_OPS
;
5607 args
->bc_attrs
.max_reqs
= 1;
5609 dprintk("%s: Back Channel : max_rqst_sz=%u max_resp_sz=%u "
5610 "max_resp_sz_cached=%u max_ops=%u max_reqs=%u\n",
5612 args
->bc_attrs
.max_rqst_sz
, args
->bc_attrs
.max_resp_sz
,
5613 args
->bc_attrs
.max_resp_sz_cached
, args
->bc_attrs
.max_ops
,
5614 args
->bc_attrs
.max_reqs
);
5617 static int nfs4_verify_fore_channel_attrs(struct nfs41_create_session_args
*args
, struct nfs4_session
*session
)
5619 struct nfs4_channel_attrs
*sent
= &args
->fc_attrs
;
5620 struct nfs4_channel_attrs
*rcvd
= &session
->fc_attrs
;
5622 if (rcvd
->max_resp_sz
> sent
->max_resp_sz
)
5625 * Our requested max_ops is the minimum we need; we're not
5626 * prepared to break up compounds into smaller pieces than that.
5627 * So, no point even trying to continue if the server won't
5630 if (rcvd
->max_ops
< sent
->max_ops
)
5632 if (rcvd
->max_reqs
== 0)
5634 if (rcvd
->max_reqs
> NFS4_MAX_SLOT_TABLE
)
5635 rcvd
->max_reqs
= NFS4_MAX_SLOT_TABLE
;
5639 static int nfs4_verify_back_channel_attrs(struct nfs41_create_session_args
*args
, struct nfs4_session
*session
)
5641 struct nfs4_channel_attrs
*sent
= &args
->bc_attrs
;
5642 struct nfs4_channel_attrs
*rcvd
= &session
->bc_attrs
;
5644 if (rcvd
->max_rqst_sz
> sent
->max_rqst_sz
)
5646 if (rcvd
->max_resp_sz
< sent
->max_resp_sz
)
5648 if (rcvd
->max_resp_sz_cached
> sent
->max_resp_sz_cached
)
5650 /* These would render the backchannel useless: */
5651 if (rcvd
->max_ops
!= sent
->max_ops
)
5653 if (rcvd
->max_reqs
!= sent
->max_reqs
)
5658 static int nfs4_verify_channel_attrs(struct nfs41_create_session_args
*args
,
5659 struct nfs4_session
*session
)
5663 ret
= nfs4_verify_fore_channel_attrs(args
, session
);
5666 return nfs4_verify_back_channel_attrs(args
, session
);
5669 static int _nfs4_proc_create_session(struct nfs_client
*clp
,
5670 struct rpc_cred
*cred
)
5672 struct nfs4_session
*session
= clp
->cl_session
;
5673 struct nfs41_create_session_args args
= {
5675 .cb_program
= NFS4_CALLBACK
,
5677 struct nfs41_create_session_res res
= {
5680 struct rpc_message msg
= {
5681 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CREATE_SESSION
],
5688 nfs4_init_channel_attrs(&args
);
5689 args
.flags
= (SESSION4_PERSIST
| SESSION4_BACK_CHAN
);
5691 status
= rpc_call_sync(session
->clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
5694 /* Verify the session's negotiated channel_attrs values */
5695 status
= nfs4_verify_channel_attrs(&args
, session
);
5696 /* Increment the clientid slot sequence id */
5704 * Issues a CREATE_SESSION operation to the server.
5705 * It is the responsibility of the caller to verify the session is
5706 * expired before calling this routine.
5708 int nfs4_proc_create_session(struct nfs_client
*clp
, struct rpc_cred
*cred
)
5712 struct nfs4_session
*session
= clp
->cl_session
;
5714 dprintk("--> %s clp=%p session=%p\n", __func__
, clp
, session
);
5716 status
= _nfs4_proc_create_session(clp
, cred
);
5720 /* Init or reset the session slot tables */
5721 status
= nfs4_setup_session_slot_tables(session
);
5722 dprintk("slot table setup returned %d\n", status
);
5726 ptr
= (unsigned *)&session
->sess_id
.data
[0];
5727 dprintk("%s client>seqid %d sessionid %u:%u:%u:%u\n", __func__
,
5728 clp
->cl_seqid
, ptr
[0], ptr
[1], ptr
[2], ptr
[3]);
5730 dprintk("<-- %s\n", __func__
);
5735 * Issue the over-the-wire RPC DESTROY_SESSION.
5736 * The caller must serialize access to this routine.
5738 int nfs4_proc_destroy_session(struct nfs4_session
*session
,
5739 struct rpc_cred
*cred
)
5741 struct rpc_message msg
= {
5742 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DESTROY_SESSION
],
5743 .rpc_argp
= session
,
5748 dprintk("--> nfs4_proc_destroy_session\n");
5750 /* session is still being setup */
5751 if (session
->clp
->cl_cons_state
!= NFS_CS_READY
)
5754 status
= rpc_call_sync(session
->clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
5757 dprintk("NFS: Got error %d from the server on DESTROY_SESSION. "
5758 "Session has been destroyed regardless...\n", status
);
5760 dprintk("<-- nfs4_proc_destroy_session\n");
5765 * Renew the cl_session lease.
5767 struct nfs4_sequence_data
{
5768 struct nfs_client
*clp
;
5769 struct nfs4_sequence_args args
;
5770 struct nfs4_sequence_res res
;
5773 static void nfs41_sequence_release(void *data
)
5775 struct nfs4_sequence_data
*calldata
= data
;
5776 struct nfs_client
*clp
= calldata
->clp
;
5778 if (atomic_read(&clp
->cl_count
) > 1)
5779 nfs4_schedule_state_renewal(clp
);
5780 nfs_put_client(clp
);
5784 static int nfs41_sequence_handle_errors(struct rpc_task
*task
, struct nfs_client
*clp
)
5786 switch(task
->tk_status
) {
5787 case -NFS4ERR_DELAY
:
5788 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
5791 nfs4_schedule_lease_recovery(clp
);
5796 static void nfs41_sequence_call_done(struct rpc_task
*task
, void *data
)
5798 struct nfs4_sequence_data
*calldata
= data
;
5799 struct nfs_client
*clp
= calldata
->clp
;
5801 if (!nfs41_sequence_done(task
, task
->tk_msg
.rpc_resp
))
5804 if (task
->tk_status
< 0) {
5805 dprintk("%s ERROR %d\n", __func__
, task
->tk_status
);
5806 if (atomic_read(&clp
->cl_count
) == 1)
5809 if (nfs41_sequence_handle_errors(task
, clp
) == -EAGAIN
) {
5810 rpc_restart_call_prepare(task
);
5814 dprintk("%s rpc_cred %p\n", __func__
, task
->tk_msg
.rpc_cred
);
5816 dprintk("<-- %s\n", __func__
);
5819 static void nfs41_sequence_prepare(struct rpc_task
*task
, void *data
)
5821 struct nfs4_sequence_data
*calldata
= data
;
5822 struct nfs_client
*clp
= calldata
->clp
;
5823 struct nfs4_sequence_args
*args
;
5824 struct nfs4_sequence_res
*res
;
5826 args
= task
->tk_msg
.rpc_argp
;
5827 res
= task
->tk_msg
.rpc_resp
;
5829 nfs41_setup_sequence(clp
->cl_session
, args
, res
, task
);
5832 static const struct rpc_call_ops nfs41_sequence_ops
= {
5833 .rpc_call_done
= nfs41_sequence_call_done
,
5834 .rpc_call_prepare
= nfs41_sequence_prepare
,
5835 .rpc_release
= nfs41_sequence_release
,
5838 static struct rpc_task
*_nfs41_proc_sequence(struct nfs_client
*clp
,
5839 struct rpc_cred
*cred
,
5842 struct nfs4_sequence_data
*calldata
;
5843 struct rpc_message msg
= {
5844 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SEQUENCE
],
5847 struct rpc_task_setup task_setup_data
= {
5848 .rpc_client
= clp
->cl_rpcclient
,
5849 .rpc_message
= &msg
,
5850 .callback_ops
= &nfs41_sequence_ops
,
5851 .flags
= RPC_TASK_ASYNC
| RPC_TASK_SOFT
,
5854 if (!atomic_inc_not_zero(&clp
->cl_count
))
5855 return ERR_PTR(-EIO
);
5856 calldata
= kzalloc(sizeof(*calldata
), GFP_NOFS
);
5857 if (calldata
== NULL
) {
5858 nfs_put_client(clp
);
5859 return ERR_PTR(-ENOMEM
);
5861 nfs41_init_sequence(&calldata
->args
, &calldata
->res
, 0);
5863 nfs4_set_sequence_privileged(&calldata
->args
);
5864 msg
.rpc_argp
= &calldata
->args
;
5865 msg
.rpc_resp
= &calldata
->res
;
5866 calldata
->clp
= clp
;
5867 task_setup_data
.callback_data
= calldata
;
5869 return rpc_run_task(&task_setup_data
);
5872 static int nfs41_proc_async_sequence(struct nfs_client
*clp
, struct rpc_cred
*cred
, unsigned renew_flags
)
5874 struct rpc_task
*task
;
5877 if ((renew_flags
& NFS4_RENEW_TIMEOUT
) == 0)
5879 task
= _nfs41_proc_sequence(clp
, cred
, false);
5881 ret
= PTR_ERR(task
);
5883 rpc_put_task_async(task
);
5884 dprintk("<-- %s status=%d\n", __func__
, ret
);
5888 static int nfs4_proc_sequence(struct nfs_client
*clp
, struct rpc_cred
*cred
)
5890 struct rpc_task
*task
;
5893 task
= _nfs41_proc_sequence(clp
, cred
, true);
5895 ret
= PTR_ERR(task
);
5898 ret
= rpc_wait_for_completion_task(task
);
5900 struct nfs4_sequence_res
*res
= task
->tk_msg
.rpc_resp
;
5902 if (task
->tk_status
== 0)
5903 nfs41_handle_sequence_flag_errors(clp
, res
->sr_status_flags
);
5904 ret
= task
->tk_status
;
5908 dprintk("<-- %s status=%d\n", __func__
, ret
);
5912 struct nfs4_reclaim_complete_data
{
5913 struct nfs_client
*clp
;
5914 struct nfs41_reclaim_complete_args arg
;
5915 struct nfs41_reclaim_complete_res res
;
5918 static void nfs4_reclaim_complete_prepare(struct rpc_task
*task
, void *data
)
5920 struct nfs4_reclaim_complete_data
*calldata
= data
;
5922 nfs41_setup_sequence(calldata
->clp
->cl_session
,
5923 &calldata
->arg
.seq_args
,
5924 &calldata
->res
.seq_res
,
5928 static int nfs41_reclaim_complete_handle_errors(struct rpc_task
*task
, struct nfs_client
*clp
)
5930 switch(task
->tk_status
) {
5932 case -NFS4ERR_COMPLETE_ALREADY
:
5933 case -NFS4ERR_WRONG_CRED
: /* What to do here? */
5935 case -NFS4ERR_DELAY
:
5936 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
5938 case -NFS4ERR_RETRY_UNCACHED_REP
:
5941 nfs4_schedule_lease_recovery(clp
);
5946 static void nfs4_reclaim_complete_done(struct rpc_task
*task
, void *data
)
5948 struct nfs4_reclaim_complete_data
*calldata
= data
;
5949 struct nfs_client
*clp
= calldata
->clp
;
5950 struct nfs4_sequence_res
*res
= &calldata
->res
.seq_res
;
5952 dprintk("--> %s\n", __func__
);
5953 if (!nfs41_sequence_done(task
, res
))
5956 if (nfs41_reclaim_complete_handle_errors(task
, clp
) == -EAGAIN
) {
5957 rpc_restart_call_prepare(task
);
5960 dprintk("<-- %s\n", __func__
);
5963 static void nfs4_free_reclaim_complete_data(void *data
)
5965 struct nfs4_reclaim_complete_data
*calldata
= data
;
5970 static const struct rpc_call_ops nfs4_reclaim_complete_call_ops
= {
5971 .rpc_call_prepare
= nfs4_reclaim_complete_prepare
,
5972 .rpc_call_done
= nfs4_reclaim_complete_done
,
5973 .rpc_release
= nfs4_free_reclaim_complete_data
,
5977 * Issue a global reclaim complete.
5979 static int nfs41_proc_reclaim_complete(struct nfs_client
*clp
)
5981 struct nfs4_reclaim_complete_data
*calldata
;
5982 struct rpc_task
*task
;
5983 struct rpc_message msg
= {
5984 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RECLAIM_COMPLETE
],
5986 struct rpc_task_setup task_setup_data
= {
5987 .rpc_client
= clp
->cl_rpcclient
,
5988 .rpc_message
= &msg
,
5989 .callback_ops
= &nfs4_reclaim_complete_call_ops
,
5990 .flags
= RPC_TASK_ASYNC
,
5992 int status
= -ENOMEM
;
5994 dprintk("--> %s\n", __func__
);
5995 calldata
= kzalloc(sizeof(*calldata
), GFP_NOFS
);
5996 if (calldata
== NULL
)
5998 calldata
->clp
= clp
;
5999 calldata
->arg
.one_fs
= 0;
6001 nfs41_init_sequence(&calldata
->arg
.seq_args
, &calldata
->res
.seq_res
, 0);
6002 nfs4_set_sequence_privileged(&calldata
->arg
.seq_args
);
6003 msg
.rpc_argp
= &calldata
->arg
;
6004 msg
.rpc_resp
= &calldata
->res
;
6005 task_setup_data
.callback_data
= calldata
;
6006 task
= rpc_run_task(&task_setup_data
);
6008 status
= PTR_ERR(task
);
6011 status
= nfs4_wait_for_completion_rpc_task(task
);
6013 status
= task
->tk_status
;
6017 dprintk("<-- %s status=%d\n", __func__
, status
);
6022 nfs4_layoutget_prepare(struct rpc_task
*task
, void *calldata
)
6024 struct nfs4_layoutget
*lgp
= calldata
;
6025 struct nfs_server
*server
= NFS_SERVER(lgp
->args
.inode
);
6026 struct nfs4_session
*session
= nfs4_get_session(server
);
6028 dprintk("--> %s\n", __func__
);
6029 /* Note the is a race here, where a CB_LAYOUTRECALL can come in
6030 * right now covering the LAYOUTGET we are about to send.
6031 * However, that is not so catastrophic, and there seems
6032 * to be no way to prevent it completely.
6034 if (nfs41_setup_sequence(session
, &lgp
->args
.seq_args
,
6035 &lgp
->res
.seq_res
, task
))
6037 if (pnfs_choose_layoutget_stateid(&lgp
->args
.stateid
,
6038 NFS_I(lgp
->args
.inode
)->layout
,
6039 lgp
->args
.ctx
->state
)) {
6040 rpc_exit(task
, NFS4_OK
);
6044 static void nfs4_layoutget_done(struct rpc_task
*task
, void *calldata
)
6046 struct nfs4_layoutget
*lgp
= calldata
;
6047 struct inode
*inode
= lgp
->args
.inode
;
6048 struct nfs_server
*server
= NFS_SERVER(inode
);
6049 struct pnfs_layout_hdr
*lo
;
6050 struct nfs4_state
*state
= NULL
;
6051 unsigned long timeo
, giveup
;
6053 dprintk("--> %s\n", __func__
);
6055 if (!nfs41_sequence_done(task
, &lgp
->res
.seq_res
))
6058 switch (task
->tk_status
) {
6061 case -NFS4ERR_LAYOUTTRYLATER
:
6062 case -NFS4ERR_RECALLCONFLICT
:
6063 timeo
= rpc_get_timeout(task
->tk_client
);
6064 giveup
= lgp
->args
.timestamp
+ timeo
;
6065 if (time_after(giveup
, jiffies
))
6066 task
->tk_status
= -NFS4ERR_DELAY
;
6068 case -NFS4ERR_EXPIRED
:
6069 case -NFS4ERR_BAD_STATEID
:
6070 spin_lock(&inode
->i_lock
);
6071 lo
= NFS_I(inode
)->layout
;
6072 if (!lo
|| list_empty(&lo
->plh_segs
)) {
6073 spin_unlock(&inode
->i_lock
);
6074 /* If the open stateid was bad, then recover it. */
6075 state
= lgp
->args
.ctx
->state
;
6079 pnfs_mark_matching_lsegs_invalid(lo
, &head
, NULL
);
6080 spin_unlock(&inode
->i_lock
);
6081 /* Mark the bad layout state as invalid, then
6082 * retry using the open stateid. */
6083 pnfs_free_lseg_list(&head
);
6086 if (nfs4_async_handle_error(task
, server
, state
) == -EAGAIN
)
6087 rpc_restart_call_prepare(task
);
6089 dprintk("<-- %s\n", __func__
);
6092 static size_t max_response_pages(struct nfs_server
*server
)
6094 u32 max_resp_sz
= server
->nfs_client
->cl_session
->fc_attrs
.max_resp_sz
;
6095 return nfs_page_array_len(0, max_resp_sz
);
6098 static void nfs4_free_pages(struct page
**pages
, size_t size
)
6105 for (i
= 0; i
< size
; i
++) {
6108 __free_page(pages
[i
]);
6113 static struct page
**nfs4_alloc_pages(size_t size
, gfp_t gfp_flags
)
6115 struct page
**pages
;
6118 pages
= kcalloc(size
, sizeof(struct page
*), gfp_flags
);
6120 dprintk("%s: can't alloc array of %zu pages\n", __func__
, size
);
6124 for (i
= 0; i
< size
; i
++) {
6125 pages
[i
] = alloc_page(gfp_flags
);
6127 dprintk("%s: failed to allocate page\n", __func__
);
6128 nfs4_free_pages(pages
, size
);
6136 static void nfs4_layoutget_release(void *calldata
)
6138 struct nfs4_layoutget
*lgp
= calldata
;
6139 struct inode
*inode
= lgp
->args
.inode
;
6140 struct nfs_server
*server
= NFS_SERVER(inode
);
6141 size_t max_pages
= max_response_pages(server
);
6143 dprintk("--> %s\n", __func__
);
6144 nfs4_free_pages(lgp
->args
.layout
.pages
, max_pages
);
6145 pnfs_put_layout_hdr(NFS_I(inode
)->layout
);
6146 put_nfs_open_context(lgp
->args
.ctx
);
6148 dprintk("<-- %s\n", __func__
);
6151 static const struct rpc_call_ops nfs4_layoutget_call_ops
= {
6152 .rpc_call_prepare
= nfs4_layoutget_prepare
,
6153 .rpc_call_done
= nfs4_layoutget_done
,
6154 .rpc_release
= nfs4_layoutget_release
,
6157 struct pnfs_layout_segment
*
6158 nfs4_proc_layoutget(struct nfs4_layoutget
*lgp
, gfp_t gfp_flags
)
6160 struct inode
*inode
= lgp
->args
.inode
;
6161 struct nfs_server
*server
= NFS_SERVER(inode
);
6162 size_t max_pages
= max_response_pages(server
);
6163 struct rpc_task
*task
;
6164 struct rpc_message msg
= {
6165 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LAYOUTGET
],
6166 .rpc_argp
= &lgp
->args
,
6167 .rpc_resp
= &lgp
->res
,
6169 struct rpc_task_setup task_setup_data
= {
6170 .rpc_client
= server
->client
,
6171 .rpc_message
= &msg
,
6172 .callback_ops
= &nfs4_layoutget_call_ops
,
6173 .callback_data
= lgp
,
6174 .flags
= RPC_TASK_ASYNC
,
6176 struct pnfs_layout_segment
*lseg
= NULL
;
6179 dprintk("--> %s\n", __func__
);
6181 lgp
->args
.layout
.pages
= nfs4_alloc_pages(max_pages
, gfp_flags
);
6182 if (!lgp
->args
.layout
.pages
) {
6183 nfs4_layoutget_release(lgp
);
6184 return ERR_PTR(-ENOMEM
);
6186 lgp
->args
.layout
.pglen
= max_pages
* PAGE_SIZE
;
6187 lgp
->args
.timestamp
= jiffies
;
6189 lgp
->res
.layoutp
= &lgp
->args
.layout
;
6190 lgp
->res
.seq_res
.sr_slot
= NULL
;
6191 nfs41_init_sequence(&lgp
->args
.seq_args
, &lgp
->res
.seq_res
, 0);
6193 /* nfs4_layoutget_release calls pnfs_put_layout_hdr */
6194 pnfs_get_layout_hdr(NFS_I(inode
)->layout
);
6196 task
= rpc_run_task(&task_setup_data
);
6198 return ERR_CAST(task
);
6199 status
= nfs4_wait_for_completion_rpc_task(task
);
6201 status
= task
->tk_status
;
6202 /* if layoutp->len is 0, nfs4_layoutget_prepare called rpc_exit */
6203 if (status
== 0 && lgp
->res
.layoutp
->len
)
6204 lseg
= pnfs_layout_process(lgp
);
6206 dprintk("<-- %s status=%d\n", __func__
, status
);
6208 return ERR_PTR(status
);
6213 nfs4_layoutreturn_prepare(struct rpc_task
*task
, void *calldata
)
6215 struct nfs4_layoutreturn
*lrp
= calldata
;
6217 dprintk("--> %s\n", __func__
);
6218 nfs41_setup_sequence(lrp
->clp
->cl_session
,
6219 &lrp
->args
.seq_args
,
6224 static void nfs4_layoutreturn_done(struct rpc_task
*task
, void *calldata
)
6226 struct nfs4_layoutreturn
*lrp
= calldata
;
6227 struct nfs_server
*server
;
6229 dprintk("--> %s\n", __func__
);
6231 if (!nfs41_sequence_done(task
, &lrp
->res
.seq_res
))
6234 server
= NFS_SERVER(lrp
->args
.inode
);
6235 if (nfs4_async_handle_error(task
, server
, NULL
) == -EAGAIN
) {
6236 rpc_restart_call_prepare(task
);
6239 dprintk("<-- %s\n", __func__
);
6242 static void nfs4_layoutreturn_release(void *calldata
)
6244 struct nfs4_layoutreturn
*lrp
= calldata
;
6245 struct pnfs_layout_hdr
*lo
= lrp
->args
.layout
;
6247 dprintk("--> %s\n", __func__
);
6248 spin_lock(&lo
->plh_inode
->i_lock
);
6249 if (lrp
->res
.lrs_present
)
6250 pnfs_set_layout_stateid(lo
, &lrp
->res
.stateid
, true);
6251 lo
->plh_block_lgets
--;
6252 spin_unlock(&lo
->plh_inode
->i_lock
);
6253 pnfs_put_layout_hdr(lrp
->args
.layout
);
6255 dprintk("<-- %s\n", __func__
);
6258 static const struct rpc_call_ops nfs4_layoutreturn_call_ops
= {
6259 .rpc_call_prepare
= nfs4_layoutreturn_prepare
,
6260 .rpc_call_done
= nfs4_layoutreturn_done
,
6261 .rpc_release
= nfs4_layoutreturn_release
,
6264 int nfs4_proc_layoutreturn(struct nfs4_layoutreturn
*lrp
)
6266 struct rpc_task
*task
;
6267 struct rpc_message msg
= {
6268 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LAYOUTRETURN
],
6269 .rpc_argp
= &lrp
->args
,
6270 .rpc_resp
= &lrp
->res
,
6272 struct rpc_task_setup task_setup_data
= {
6273 .rpc_client
= lrp
->clp
->cl_rpcclient
,
6274 .rpc_message
= &msg
,
6275 .callback_ops
= &nfs4_layoutreturn_call_ops
,
6276 .callback_data
= lrp
,
6280 dprintk("--> %s\n", __func__
);
6281 nfs41_init_sequence(&lrp
->args
.seq_args
, &lrp
->res
.seq_res
, 1);
6282 task
= rpc_run_task(&task_setup_data
);
6284 return PTR_ERR(task
);
6285 status
= task
->tk_status
;
6286 dprintk("<-- %s status=%d\n", __func__
, status
);
6292 * Retrieve the list of Data Server devices from the MDS.
6294 static int _nfs4_getdevicelist(struct nfs_server
*server
,
6295 const struct nfs_fh
*fh
,
6296 struct pnfs_devicelist
*devlist
)
6298 struct nfs4_getdevicelist_args args
= {
6300 .layoutclass
= server
->pnfs_curr_ld
->id
,
6302 struct nfs4_getdevicelist_res res
= {
6305 struct rpc_message msg
= {
6306 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETDEVICELIST
],
6312 dprintk("--> %s\n", __func__
);
6313 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
,
6315 dprintk("<-- %s status=%d\n", __func__
, status
);
6319 int nfs4_proc_getdevicelist(struct nfs_server
*server
,
6320 const struct nfs_fh
*fh
,
6321 struct pnfs_devicelist
*devlist
)
6323 struct nfs4_exception exception
= { };
6327 err
= nfs4_handle_exception(server
,
6328 _nfs4_getdevicelist(server
, fh
, devlist
),
6330 } while (exception
.retry
);
6332 dprintk("%s: err=%d, num_devs=%u\n", __func__
,
6333 err
, devlist
->num_devs
);
6337 EXPORT_SYMBOL_GPL(nfs4_proc_getdevicelist
);
6340 _nfs4_proc_getdeviceinfo(struct nfs_server
*server
, struct pnfs_device
*pdev
)
6342 struct nfs4_getdeviceinfo_args args
= {
6345 struct nfs4_getdeviceinfo_res res
= {
6348 struct rpc_message msg
= {
6349 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETDEVICEINFO
],
6355 dprintk("--> %s\n", __func__
);
6356 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
6357 dprintk("<-- %s status=%d\n", __func__
, status
);
6362 int nfs4_proc_getdeviceinfo(struct nfs_server
*server
, struct pnfs_device
*pdev
)
6364 struct nfs4_exception exception
= { };
6368 err
= nfs4_handle_exception(server
,
6369 _nfs4_proc_getdeviceinfo(server
, pdev
),
6371 } while (exception
.retry
);
6374 EXPORT_SYMBOL_GPL(nfs4_proc_getdeviceinfo
);
6376 static void nfs4_layoutcommit_prepare(struct rpc_task
*task
, void *calldata
)
6378 struct nfs4_layoutcommit_data
*data
= calldata
;
6379 struct nfs_server
*server
= NFS_SERVER(data
->args
.inode
);
6380 struct nfs4_session
*session
= nfs4_get_session(server
);
6382 nfs41_setup_sequence(session
,
6383 &data
->args
.seq_args
,
6389 nfs4_layoutcommit_done(struct rpc_task
*task
, void *calldata
)
6391 struct nfs4_layoutcommit_data
*data
= calldata
;
6392 struct nfs_server
*server
= NFS_SERVER(data
->args
.inode
);
6394 if (!nfs41_sequence_done(task
, &data
->res
.seq_res
))
6397 switch (task
->tk_status
) { /* Just ignore these failures */
6398 case -NFS4ERR_DELEG_REVOKED
: /* layout was recalled */
6399 case -NFS4ERR_BADIOMODE
: /* no IOMODE_RW layout for range */
6400 case -NFS4ERR_BADLAYOUT
: /* no layout */
6401 case -NFS4ERR_GRACE
: /* loca_recalim always false */
6402 task
->tk_status
= 0;
6405 nfs_post_op_update_inode_force_wcc(data
->args
.inode
,
6409 if (nfs4_async_handle_error(task
, server
, NULL
) == -EAGAIN
) {
6410 rpc_restart_call_prepare(task
);
6416 static void nfs4_layoutcommit_release(void *calldata
)
6418 struct nfs4_layoutcommit_data
*data
= calldata
;
6420 pnfs_cleanup_layoutcommit(data
);
6421 put_rpccred(data
->cred
);
6425 static const struct rpc_call_ops nfs4_layoutcommit_ops
= {
6426 .rpc_call_prepare
= nfs4_layoutcommit_prepare
,
6427 .rpc_call_done
= nfs4_layoutcommit_done
,
6428 .rpc_release
= nfs4_layoutcommit_release
,
6432 nfs4_proc_layoutcommit(struct nfs4_layoutcommit_data
*data
, bool sync
)
6434 struct rpc_message msg
= {
6435 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LAYOUTCOMMIT
],
6436 .rpc_argp
= &data
->args
,
6437 .rpc_resp
= &data
->res
,
6438 .rpc_cred
= data
->cred
,
6440 struct rpc_task_setup task_setup_data
= {
6441 .task
= &data
->task
,
6442 .rpc_client
= NFS_CLIENT(data
->args
.inode
),
6443 .rpc_message
= &msg
,
6444 .callback_ops
= &nfs4_layoutcommit_ops
,
6445 .callback_data
= data
,
6446 .flags
= RPC_TASK_ASYNC
,
6448 struct rpc_task
*task
;
6451 dprintk("NFS: %4d initiating layoutcommit call. sync %d "
6452 "lbw: %llu inode %lu\n",
6453 data
->task
.tk_pid
, sync
,
6454 data
->args
.lastbytewritten
,
6455 data
->args
.inode
->i_ino
);
6457 nfs41_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
6458 task
= rpc_run_task(&task_setup_data
);
6460 return PTR_ERR(task
);
6463 status
= nfs4_wait_for_completion_rpc_task(task
);
6466 status
= task
->tk_status
;
6468 dprintk("%s: status %d\n", __func__
, status
);
6474 _nfs41_proc_secinfo_no_name(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
6475 struct nfs_fsinfo
*info
, struct nfs4_secinfo_flavors
*flavors
)
6477 struct nfs41_secinfo_no_name_args args
= {
6478 .style
= SECINFO_STYLE_CURRENT_FH
,
6480 struct nfs4_secinfo_res res
= {
6483 struct rpc_message msg
= {
6484 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SECINFO_NO_NAME
],
6488 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
6492 nfs41_proc_secinfo_no_name(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
6493 struct nfs_fsinfo
*info
, struct nfs4_secinfo_flavors
*flavors
)
6495 struct nfs4_exception exception
= { };
6498 err
= _nfs41_proc_secinfo_no_name(server
, fhandle
, info
, flavors
);
6501 case -NFS4ERR_WRONGSEC
:
6502 case -NFS4ERR_NOTSUPP
:
6505 err
= nfs4_handle_exception(server
, err
, &exception
);
6507 } while (exception
.retry
);
6513 nfs41_find_root_sec(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
6514 struct nfs_fsinfo
*info
)
6518 rpc_authflavor_t flavor
;
6519 struct nfs4_secinfo_flavors
*flavors
;
6521 page
= alloc_page(GFP_KERNEL
);
6527 flavors
= page_address(page
);
6528 err
= nfs41_proc_secinfo_no_name(server
, fhandle
, info
, flavors
);
6531 * Fall back on "guess and check" method if
6532 * the server doesn't support SECINFO_NO_NAME
6534 if (err
== -NFS4ERR_WRONGSEC
|| err
== -NFS4ERR_NOTSUPP
) {
6535 err
= nfs4_find_root_sec(server
, fhandle
, info
);
6541 flavor
= nfs_find_best_sec(flavors
);
6543 err
= nfs4_lookup_root_sec(server
, fhandle
, info
, flavor
);
6553 static int _nfs41_test_stateid(struct nfs_server
*server
, nfs4_stateid
*stateid
)
6556 struct nfs41_test_stateid_args args
= {
6559 struct nfs41_test_stateid_res res
;
6560 struct rpc_message msg
= {
6561 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_TEST_STATEID
],
6566 dprintk("NFS call test_stateid %p\n", stateid
);
6567 nfs41_init_sequence(&args
.seq_args
, &res
.seq_res
, 0);
6568 nfs4_set_sequence_privileged(&args
.seq_args
);
6569 status
= nfs4_call_sync_sequence(server
->client
, server
, &msg
,
6570 &args
.seq_args
, &res
.seq_res
);
6571 if (status
!= NFS_OK
) {
6572 dprintk("NFS reply test_stateid: failed, %d\n", status
);
6575 dprintk("NFS reply test_stateid: succeeded, %d\n", -res
.status
);
6580 * nfs41_test_stateid - perform a TEST_STATEID operation
6582 * @server: server / transport on which to perform the operation
6583 * @stateid: state ID to test
6585 * Returns NFS_OK if the server recognizes that "stateid" is valid.
6586 * Otherwise a negative NFS4ERR value is returned if the operation
6587 * failed or the state ID is not currently valid.
6589 static int nfs41_test_stateid(struct nfs_server
*server
, nfs4_stateid
*stateid
)
6591 struct nfs4_exception exception
= { };
6594 err
= _nfs41_test_stateid(server
, stateid
);
6595 if (err
!= -NFS4ERR_DELAY
)
6597 nfs4_handle_exception(server
, err
, &exception
);
6598 } while (exception
.retry
);
6602 static int _nfs4_free_stateid(struct nfs_server
*server
, nfs4_stateid
*stateid
)
6604 struct nfs41_free_stateid_args args
= {
6607 struct nfs41_free_stateid_res res
;
6608 struct rpc_message msg
= {
6609 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FREE_STATEID
],
6615 dprintk("NFS call free_stateid %p\n", stateid
);
6616 nfs41_init_sequence(&args
.seq_args
, &res
.seq_res
, 0);
6617 nfs4_set_sequence_privileged(&args
.seq_args
);
6618 status
= nfs4_call_sync_sequence(server
->client
, server
, &msg
,
6619 &args
.seq_args
, &res
.seq_res
);
6620 dprintk("NFS reply free_stateid: %d\n", status
);
6625 * nfs41_free_stateid - perform a FREE_STATEID operation
6627 * @server: server / transport on which to perform the operation
6628 * @stateid: state ID to release
6630 * Returns NFS_OK if the server freed "stateid". Otherwise a
6631 * negative NFS4ERR value is returned.
6633 static int nfs41_free_stateid(struct nfs_server
*server
, nfs4_stateid
*stateid
)
6635 struct nfs4_exception exception
= { };
6638 err
= _nfs4_free_stateid(server
, stateid
);
6639 if (err
!= -NFS4ERR_DELAY
)
6641 nfs4_handle_exception(server
, err
, &exception
);
6642 } while (exception
.retry
);
6646 static bool nfs41_match_stateid(const nfs4_stateid
*s1
,
6647 const nfs4_stateid
*s2
)
6649 if (memcmp(s1
->other
, s2
->other
, sizeof(s1
->other
)) != 0)
6652 if (s1
->seqid
== s2
->seqid
)
6654 if (s1
->seqid
== 0 || s2
->seqid
== 0)
6660 #endif /* CONFIG_NFS_V4_1 */
6662 static bool nfs4_match_stateid(const nfs4_stateid
*s1
,
6663 const nfs4_stateid
*s2
)
6665 return nfs4_stateid_match(s1
, s2
);
6669 static const struct nfs4_state_recovery_ops nfs40_reboot_recovery_ops
= {
6670 .owner_flag_bit
= NFS_OWNER_RECLAIM_REBOOT
,
6671 .state_flag_bit
= NFS_STATE_RECLAIM_REBOOT
,
6672 .recover_open
= nfs4_open_reclaim
,
6673 .recover_lock
= nfs4_lock_reclaim
,
6674 .establish_clid
= nfs4_init_clientid
,
6675 .get_clid_cred
= nfs4_get_setclientid_cred
,
6676 .detect_trunking
= nfs40_discover_server_trunking
,
6679 #if defined(CONFIG_NFS_V4_1)
6680 static const struct nfs4_state_recovery_ops nfs41_reboot_recovery_ops
= {
6681 .owner_flag_bit
= NFS_OWNER_RECLAIM_REBOOT
,
6682 .state_flag_bit
= NFS_STATE_RECLAIM_REBOOT
,
6683 .recover_open
= nfs4_open_reclaim
,
6684 .recover_lock
= nfs4_lock_reclaim
,
6685 .establish_clid
= nfs41_init_clientid
,
6686 .get_clid_cred
= nfs4_get_exchange_id_cred
,
6687 .reclaim_complete
= nfs41_proc_reclaim_complete
,
6688 .detect_trunking
= nfs41_discover_server_trunking
,
6690 #endif /* CONFIG_NFS_V4_1 */
6692 static const struct nfs4_state_recovery_ops nfs40_nograce_recovery_ops
= {
6693 .owner_flag_bit
= NFS_OWNER_RECLAIM_NOGRACE
,
6694 .state_flag_bit
= NFS_STATE_RECLAIM_NOGRACE
,
6695 .recover_open
= nfs4_open_expired
,
6696 .recover_lock
= nfs4_lock_expired
,
6697 .establish_clid
= nfs4_init_clientid
,
6698 .get_clid_cred
= nfs4_get_setclientid_cred
,
6701 #if defined(CONFIG_NFS_V4_1)
6702 static const struct nfs4_state_recovery_ops nfs41_nograce_recovery_ops
= {
6703 .owner_flag_bit
= NFS_OWNER_RECLAIM_NOGRACE
,
6704 .state_flag_bit
= NFS_STATE_RECLAIM_NOGRACE
,
6705 .recover_open
= nfs41_open_expired
,
6706 .recover_lock
= nfs41_lock_expired
,
6707 .establish_clid
= nfs41_init_clientid
,
6708 .get_clid_cred
= nfs4_get_exchange_id_cred
,
6710 #endif /* CONFIG_NFS_V4_1 */
6712 static const struct nfs4_state_maintenance_ops nfs40_state_renewal_ops
= {
6713 .sched_state_renewal
= nfs4_proc_async_renew
,
6714 .get_state_renewal_cred_locked
= nfs4_get_renew_cred_locked
,
6715 .renew_lease
= nfs4_proc_renew
,
6718 #if defined(CONFIG_NFS_V4_1)
6719 static const struct nfs4_state_maintenance_ops nfs41_state_renewal_ops
= {
6720 .sched_state_renewal
= nfs41_proc_async_sequence
,
6721 .get_state_renewal_cred_locked
= nfs4_get_machine_cred_locked
,
6722 .renew_lease
= nfs4_proc_sequence
,
6726 static const struct nfs4_minor_version_ops nfs_v4_0_minor_ops
= {
6728 .call_sync
= _nfs4_call_sync
,
6729 .match_stateid
= nfs4_match_stateid
,
6730 .find_root_sec
= nfs4_find_root_sec
,
6731 .reboot_recovery_ops
= &nfs40_reboot_recovery_ops
,
6732 .nograce_recovery_ops
= &nfs40_nograce_recovery_ops
,
6733 .state_renewal_ops
= &nfs40_state_renewal_ops
,
6736 #if defined(CONFIG_NFS_V4_1)
6737 static const struct nfs4_minor_version_ops nfs_v4_1_minor_ops
= {
6739 .call_sync
= nfs4_call_sync_sequence
,
6740 .match_stateid
= nfs41_match_stateid
,
6741 .find_root_sec
= nfs41_find_root_sec
,
6742 .reboot_recovery_ops
= &nfs41_reboot_recovery_ops
,
6743 .nograce_recovery_ops
= &nfs41_nograce_recovery_ops
,
6744 .state_renewal_ops
= &nfs41_state_renewal_ops
,
6748 const struct nfs4_minor_version_ops
*nfs_v4_minor_ops
[] = {
6749 [0] = &nfs_v4_0_minor_ops
,
6750 #if defined(CONFIG_NFS_V4_1)
6751 [1] = &nfs_v4_1_minor_ops
,
6755 const struct inode_operations nfs4_dir_inode_operations
= {
6756 .create
= nfs_create
,
6757 .lookup
= nfs_lookup
,
6758 .atomic_open
= nfs_atomic_open
,
6760 .unlink
= nfs_unlink
,
6761 .symlink
= nfs_symlink
,
6765 .rename
= nfs_rename
,
6766 .permission
= nfs_permission
,
6767 .getattr
= nfs_getattr
,
6768 .setattr
= nfs_setattr
,
6769 .getxattr
= generic_getxattr
,
6770 .setxattr
= generic_setxattr
,
6771 .listxattr
= generic_listxattr
,
6772 .removexattr
= generic_removexattr
,
6775 static const struct inode_operations nfs4_file_inode_operations
= {
6776 .permission
= nfs_permission
,
6777 .getattr
= nfs_getattr
,
6778 .setattr
= nfs_setattr
,
6779 .getxattr
= generic_getxattr
,
6780 .setxattr
= generic_setxattr
,
6781 .listxattr
= generic_listxattr
,
6782 .removexattr
= generic_removexattr
,
6785 const struct nfs_rpc_ops nfs_v4_clientops
= {
6786 .version
= 4, /* protocol version */
6787 .dentry_ops
= &nfs4_dentry_operations
,
6788 .dir_inode_ops
= &nfs4_dir_inode_operations
,
6789 .file_inode_ops
= &nfs4_file_inode_operations
,
6790 .file_ops
= &nfs4_file_operations
,
6791 .getroot
= nfs4_proc_get_root
,
6792 .submount
= nfs4_submount
,
6793 .try_mount
= nfs4_try_mount
,
6794 .getattr
= nfs4_proc_getattr
,
6795 .setattr
= nfs4_proc_setattr
,
6796 .lookup
= nfs4_proc_lookup
,
6797 .access
= nfs4_proc_access
,
6798 .readlink
= nfs4_proc_readlink
,
6799 .create
= nfs4_proc_create
,
6800 .remove
= nfs4_proc_remove
,
6801 .unlink_setup
= nfs4_proc_unlink_setup
,
6802 .unlink_rpc_prepare
= nfs4_proc_unlink_rpc_prepare
,
6803 .unlink_done
= nfs4_proc_unlink_done
,
6804 .rename
= nfs4_proc_rename
,
6805 .rename_setup
= nfs4_proc_rename_setup
,
6806 .rename_rpc_prepare
= nfs4_proc_rename_rpc_prepare
,
6807 .rename_done
= nfs4_proc_rename_done
,
6808 .link
= nfs4_proc_link
,
6809 .symlink
= nfs4_proc_symlink
,
6810 .mkdir
= nfs4_proc_mkdir
,
6811 .rmdir
= nfs4_proc_remove
,
6812 .readdir
= nfs4_proc_readdir
,
6813 .mknod
= nfs4_proc_mknod
,
6814 .statfs
= nfs4_proc_statfs
,
6815 .fsinfo
= nfs4_proc_fsinfo
,
6816 .pathconf
= nfs4_proc_pathconf
,
6817 .set_capabilities
= nfs4_server_capabilities
,
6818 .decode_dirent
= nfs4_decode_dirent
,
6819 .read_setup
= nfs4_proc_read_setup
,
6820 .read_pageio_init
= pnfs_pageio_init_read
,
6821 .read_rpc_prepare
= nfs4_proc_read_rpc_prepare
,
6822 .read_done
= nfs4_read_done
,
6823 .write_setup
= nfs4_proc_write_setup
,
6824 .write_pageio_init
= pnfs_pageio_init_write
,
6825 .write_rpc_prepare
= nfs4_proc_write_rpc_prepare
,
6826 .write_done
= nfs4_write_done
,
6827 .commit_setup
= nfs4_proc_commit_setup
,
6828 .commit_rpc_prepare
= nfs4_proc_commit_rpc_prepare
,
6829 .commit_done
= nfs4_commit_done
,
6830 .lock
= nfs4_proc_lock
,
6831 .clear_acl_cache
= nfs4_zap_acl_attr
,
6832 .close_context
= nfs4_close_context
,
6833 .open_context
= nfs4_atomic_open
,
6834 .have_delegation
= nfs4_have_delegation
,
6835 .return_delegation
= nfs4_inode_return_delegation
,
6836 .alloc_client
= nfs4_alloc_client
,
6837 .init_client
= nfs4_init_client
,
6838 .free_client
= nfs4_free_client
,
6839 .create_server
= nfs4_create_server
,
6840 .clone_server
= nfs_clone_server
,
6843 static const struct xattr_handler nfs4_xattr_nfs4_acl_handler
= {
6844 .prefix
= XATTR_NAME_NFSV4_ACL
,
6845 .list
= nfs4_xattr_list_nfs4_acl
,
6846 .get
= nfs4_xattr_get_nfs4_acl
,
6847 .set
= nfs4_xattr_set_nfs4_acl
,
6850 const struct xattr_handler
*nfs4_xattr_handlers
[] = {
6851 &nfs4_xattr_nfs4_acl_handler
,