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
*, struct nfs4_label
*label
);
81 static int _nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
, struct nfs4_label
*label
);
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
, struct nfs4_label
*ilabel
,
85 struct nfs4_label
*olabel
);
86 #ifdef CONFIG_NFS_V4_1
87 static int nfs41_test_stateid(struct nfs_server
*, nfs4_stateid
*);
88 static int nfs41_free_stateid(struct nfs_server
*, nfs4_stateid
*);
90 /* Prevent leaks of NFSv4 errors into userland */
91 static int nfs4_map_errors(int err
)
96 case -NFS4ERR_RESOURCE
:
97 case -NFS4ERR_LAYOUTTRYLATER
:
98 case -NFS4ERR_RECALLCONFLICT
:
100 case -NFS4ERR_WRONGSEC
:
102 case -NFS4ERR_BADOWNER
:
103 case -NFS4ERR_BADNAME
:
105 case -NFS4ERR_SHARE_DENIED
:
107 case -NFS4ERR_MINOR_VERS_MISMATCH
:
108 return -EPROTONOSUPPORT
;
109 case -NFS4ERR_ACCESS
:
111 case -NFS4ERR_FILE_OPEN
:
114 dprintk("%s could not handle NFSv4 error %d\n",
122 * This is our standard bitmap for GETATTR requests.
124 const u32 nfs4_fattr_bitmap
[3] = {
126 | FATTR4_WORD0_CHANGE
129 | FATTR4_WORD0_FILEID
,
131 | FATTR4_WORD1_NUMLINKS
133 | FATTR4_WORD1_OWNER_GROUP
134 | FATTR4_WORD1_RAWDEV
135 | FATTR4_WORD1_SPACE_USED
136 | FATTR4_WORD1_TIME_ACCESS
137 | FATTR4_WORD1_TIME_METADATA
138 | FATTR4_WORD1_TIME_MODIFY
141 static const u32 nfs4_pnfs_open_bitmap
[3] = {
143 | FATTR4_WORD0_CHANGE
146 | FATTR4_WORD0_FILEID
,
148 | FATTR4_WORD1_NUMLINKS
150 | FATTR4_WORD1_OWNER_GROUP
151 | FATTR4_WORD1_RAWDEV
152 | FATTR4_WORD1_SPACE_USED
153 | FATTR4_WORD1_TIME_ACCESS
154 | FATTR4_WORD1_TIME_METADATA
155 | FATTR4_WORD1_TIME_MODIFY
,
156 FATTR4_WORD2_MDSTHRESHOLD
159 static const u32 nfs4_open_noattr_bitmap
[3] = {
161 | FATTR4_WORD0_CHANGE
162 | FATTR4_WORD0_FILEID
,
165 const u32 nfs4_statfs_bitmap
[3] = {
166 FATTR4_WORD0_FILES_AVAIL
167 | FATTR4_WORD0_FILES_FREE
168 | FATTR4_WORD0_FILES_TOTAL
,
169 FATTR4_WORD1_SPACE_AVAIL
170 | FATTR4_WORD1_SPACE_FREE
171 | FATTR4_WORD1_SPACE_TOTAL
174 const u32 nfs4_pathconf_bitmap
[3] = {
176 | FATTR4_WORD0_MAXNAME
,
180 const u32 nfs4_fsinfo_bitmap
[3] = { FATTR4_WORD0_MAXFILESIZE
181 | FATTR4_WORD0_MAXREAD
182 | FATTR4_WORD0_MAXWRITE
183 | FATTR4_WORD0_LEASE_TIME
,
184 FATTR4_WORD1_TIME_DELTA
185 | FATTR4_WORD1_FS_LAYOUT_TYPES
,
186 FATTR4_WORD2_LAYOUT_BLKSIZE
189 const u32 nfs4_fs_locations_bitmap
[3] = {
191 | FATTR4_WORD0_CHANGE
194 | FATTR4_WORD0_FILEID
195 | FATTR4_WORD0_FS_LOCATIONS
,
197 | FATTR4_WORD1_NUMLINKS
199 | FATTR4_WORD1_OWNER_GROUP
200 | FATTR4_WORD1_RAWDEV
201 | FATTR4_WORD1_SPACE_USED
202 | FATTR4_WORD1_TIME_ACCESS
203 | FATTR4_WORD1_TIME_METADATA
204 | FATTR4_WORD1_TIME_MODIFY
205 | FATTR4_WORD1_MOUNTED_ON_FILEID
,
208 static void nfs4_setup_readdir(u64 cookie
, __be32
*verifier
, struct dentry
*dentry
,
209 struct nfs4_readdir_arg
*readdir
)
214 readdir
->cookie
= cookie
;
215 memcpy(&readdir
->verifier
, verifier
, sizeof(readdir
->verifier
));
220 memset(&readdir
->verifier
, 0, sizeof(readdir
->verifier
));
225 * NFSv4 servers do not return entries for '.' and '..'
226 * Therefore, we fake these entries here. We let '.'
227 * have cookie 0 and '..' have cookie 1. Note that
228 * when talking to the server, we always send cookie 0
231 start
= p
= kmap_atomic(*readdir
->pages
);
234 *p
++ = xdr_one
; /* next */
235 *p
++ = xdr_zero
; /* cookie, first word */
236 *p
++ = xdr_one
; /* cookie, second word */
237 *p
++ = xdr_one
; /* entry len */
238 memcpy(p
, ".\0\0\0", 4); /* entry */
240 *p
++ = xdr_one
; /* bitmap length */
241 *p
++ = htonl(FATTR4_WORD0_FILEID
); /* bitmap */
242 *p
++ = htonl(8); /* attribute buffer length */
243 p
= xdr_encode_hyper(p
, NFS_FILEID(dentry
->d_inode
));
246 *p
++ = xdr_one
; /* next */
247 *p
++ = xdr_zero
; /* cookie, first word */
248 *p
++ = xdr_two
; /* cookie, second word */
249 *p
++ = xdr_two
; /* entry len */
250 memcpy(p
, "..\0\0", 4); /* entry */
252 *p
++ = xdr_one
; /* bitmap length */
253 *p
++ = htonl(FATTR4_WORD0_FILEID
); /* bitmap */
254 *p
++ = htonl(8); /* attribute buffer length */
255 p
= xdr_encode_hyper(p
, NFS_FILEID(dentry
->d_parent
->d_inode
));
257 readdir
->pgbase
= (char *)p
- (char *)start
;
258 readdir
->count
-= readdir
->pgbase
;
259 kunmap_atomic(start
);
262 static int nfs4_delay(struct rpc_clnt
*clnt
, long *timeout
)
269 *timeout
= NFS4_POLL_RETRY_MIN
;
270 if (*timeout
> NFS4_POLL_RETRY_MAX
)
271 *timeout
= NFS4_POLL_RETRY_MAX
;
272 freezable_schedule_timeout_killable(*timeout
);
273 if (fatal_signal_pending(current
))
279 /* This is the error handling routine for processes that are allowed
282 static int nfs4_handle_exception(struct nfs_server
*server
, int errorcode
, struct nfs4_exception
*exception
)
284 struct nfs_client
*clp
= server
->nfs_client
;
285 struct nfs4_state
*state
= exception
->state
;
286 struct inode
*inode
= exception
->inode
;
289 exception
->retry
= 0;
293 case -NFS4ERR_OPENMODE
:
294 if (inode
&& nfs4_have_delegation(inode
, FMODE_READ
)) {
295 nfs4_inode_return_delegation(inode
);
296 exception
->retry
= 1;
301 ret
= nfs4_schedule_stateid_recovery(server
, state
);
304 goto wait_on_recovery
;
305 case -NFS4ERR_DELEG_REVOKED
:
306 case -NFS4ERR_ADMIN_REVOKED
:
307 case -NFS4ERR_BAD_STATEID
:
308 if (inode
!= NULL
&& nfs4_have_delegation(inode
, FMODE_READ
)) {
309 nfs_remove_bad_delegation(inode
);
310 exception
->retry
= 1;
315 ret
= nfs4_schedule_stateid_recovery(server
, state
);
318 goto wait_on_recovery
;
319 case -NFS4ERR_EXPIRED
:
321 ret
= nfs4_schedule_stateid_recovery(server
, state
);
325 case -NFS4ERR_STALE_STATEID
:
326 case -NFS4ERR_STALE_CLIENTID
:
327 nfs4_schedule_lease_recovery(clp
);
328 goto wait_on_recovery
;
329 #if defined(CONFIG_NFS_V4_1)
330 case -NFS4ERR_BADSESSION
:
331 case -NFS4ERR_BADSLOT
:
332 case -NFS4ERR_BAD_HIGH_SLOT
:
333 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
334 case -NFS4ERR_DEADSESSION
:
335 case -NFS4ERR_SEQ_FALSE_RETRY
:
336 case -NFS4ERR_SEQ_MISORDERED
:
337 dprintk("%s ERROR: %d Reset session\n", __func__
,
339 nfs4_schedule_session_recovery(clp
->cl_session
, errorcode
);
340 goto wait_on_recovery
;
341 #endif /* defined(CONFIG_NFS_V4_1) */
342 case -NFS4ERR_FILE_OPEN
:
343 if (exception
->timeout
> HZ
) {
344 /* We have retried a decent amount, time to
352 ret
= nfs4_delay(server
->client
, &exception
->timeout
);
355 case -NFS4ERR_RETRY_UNCACHED_REP
:
356 case -NFS4ERR_OLD_STATEID
:
357 exception
->retry
= 1;
359 case -NFS4ERR_BADOWNER
:
360 /* The following works around a Linux server bug! */
361 case -NFS4ERR_BADNAME
:
362 if (server
->caps
& NFS_CAP_UIDGID_NOMAP
) {
363 server
->caps
&= ~NFS_CAP_UIDGID_NOMAP
;
364 exception
->retry
= 1;
365 printk(KERN_WARNING
"NFS: v4 server %s "
366 "does not accept raw "
368 "Reenabling the idmapper.\n",
369 server
->nfs_client
->cl_hostname
);
372 /* We failed to handle the error */
373 return nfs4_map_errors(ret
);
375 ret
= nfs4_wait_clnt_recover(clp
);
377 exception
->retry
= 1;
382 static void do_renew_lease(struct nfs_client
*clp
, unsigned long timestamp
)
384 spin_lock(&clp
->cl_lock
);
385 if (time_before(clp
->cl_last_renewal
,timestamp
))
386 clp
->cl_last_renewal
= timestamp
;
387 spin_unlock(&clp
->cl_lock
);
390 static void renew_lease(const struct nfs_server
*server
, unsigned long timestamp
)
392 do_renew_lease(server
->nfs_client
, timestamp
);
395 #if defined(CONFIG_NFS_V4_1)
397 static void nfs41_sequence_free_slot(struct nfs4_sequence_res
*res
)
399 struct nfs4_session
*session
;
400 struct nfs4_slot_table
*tbl
;
401 bool send_new_highest_used_slotid
= false;
404 /* just wake up the next guy waiting since
405 * we may have not consumed a slot after all */
406 dprintk("%s: No slot\n", __func__
);
409 tbl
= res
->sr_slot
->table
;
410 session
= tbl
->session
;
412 spin_lock(&tbl
->slot_tbl_lock
);
413 /* Be nice to the server: try to ensure that the last transmitted
414 * value for highest_user_slotid <= target_highest_slotid
416 if (tbl
->highest_used_slotid
> tbl
->target_highest_slotid
)
417 send_new_highest_used_slotid
= true;
419 if (nfs41_wake_and_assign_slot(tbl
, res
->sr_slot
)) {
420 send_new_highest_used_slotid
= false;
423 nfs4_free_slot(tbl
, res
->sr_slot
);
425 if (tbl
->highest_used_slotid
!= NFS4_NO_SLOT
)
426 send_new_highest_used_slotid
= false;
428 spin_unlock(&tbl
->slot_tbl_lock
);
430 if (send_new_highest_used_slotid
)
431 nfs41_server_notify_highest_slotid_update(session
->clp
);
434 static int nfs41_sequence_done(struct rpc_task
*task
, struct nfs4_sequence_res
*res
)
436 struct nfs4_session
*session
;
437 struct nfs4_slot
*slot
;
438 struct nfs_client
*clp
;
439 bool interrupted
= false;
442 /* don't increment the sequence number if the task wasn't sent */
443 if (!RPC_WAS_SENT(task
))
447 session
= slot
->table
->session
;
449 if (slot
->interrupted
) {
450 slot
->interrupted
= 0;
454 /* Check the SEQUENCE operation status */
455 switch (res
->sr_status
) {
457 /* Update the slot's sequence and clientid lease timer */
460 do_renew_lease(clp
, res
->sr_timestamp
);
461 /* Check sequence flags */
462 if (res
->sr_status_flags
!= 0)
463 nfs4_schedule_lease_recovery(clp
);
464 nfs41_update_target_slotid(slot
->table
, slot
, res
);
468 * sr_status remains 1 if an RPC level error occurred.
469 * The server may or may not have processed the sequence
471 * Mark the slot as having hosted an interrupted RPC call.
473 slot
->interrupted
= 1;
476 /* The server detected a resend of the RPC call and
477 * returned NFS4ERR_DELAY as per Section 2.10.6.2
480 dprintk("%s: slot=%u seq=%u: Operation in progress\n",
485 case -NFS4ERR_BADSLOT
:
487 * The slot id we used was probably retired. Try again
488 * using a different slot id.
491 case -NFS4ERR_SEQ_MISORDERED
:
493 * Was the last operation on this sequence interrupted?
494 * If so, retry after bumping the sequence number.
501 * Could this slot have been previously retired?
502 * If so, then the server may be expecting seq_nr = 1!
504 if (slot
->seq_nr
!= 1) {
509 case -NFS4ERR_SEQ_FALSE_RETRY
:
513 /* Just update the slot sequence no. */
517 /* The session may be reset by one of the error handlers. */
518 dprintk("%s: Error %d free the slot \n", __func__
, res
->sr_status
);
519 nfs41_sequence_free_slot(res
);
522 if (rpc_restart_call_prepare(task
)) {
528 if (!rpc_restart_call(task
))
530 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
534 static int nfs4_sequence_done(struct rpc_task
*task
,
535 struct nfs4_sequence_res
*res
)
537 if (res
->sr_slot
== NULL
)
539 return nfs41_sequence_done(task
, res
);
542 static void nfs41_init_sequence(struct nfs4_sequence_args
*args
,
543 struct nfs4_sequence_res
*res
, int cache_reply
)
545 args
->sa_slot
= NULL
;
546 args
->sa_cache_this
= 0;
547 args
->sa_privileged
= 0;
549 args
->sa_cache_this
= 1;
553 static void nfs4_set_sequence_privileged(struct nfs4_sequence_args
*args
)
555 args
->sa_privileged
= 1;
558 int nfs41_setup_sequence(struct nfs4_session
*session
,
559 struct nfs4_sequence_args
*args
,
560 struct nfs4_sequence_res
*res
,
561 struct rpc_task
*task
)
563 struct nfs4_slot
*slot
;
564 struct nfs4_slot_table
*tbl
;
566 dprintk("--> %s\n", __func__
);
567 /* slot already allocated? */
568 if (res
->sr_slot
!= NULL
)
571 tbl
= &session
->fc_slot_table
;
573 task
->tk_timeout
= 0;
575 spin_lock(&tbl
->slot_tbl_lock
);
576 if (test_bit(NFS4_SESSION_DRAINING
, &session
->session_state
) &&
577 !args
->sa_privileged
) {
578 /* The state manager will wait until the slot table is empty */
579 dprintk("%s session is draining\n", __func__
);
583 slot
= nfs4_alloc_slot(tbl
);
585 /* If out of memory, try again in 1/4 second */
586 if (slot
== ERR_PTR(-ENOMEM
))
587 task
->tk_timeout
= HZ
>> 2;
588 dprintk("<-- %s: no free slots\n", __func__
);
591 spin_unlock(&tbl
->slot_tbl_lock
);
593 args
->sa_slot
= slot
;
595 dprintk("<-- %s slotid=%d seqid=%d\n", __func__
,
596 slot
->slot_nr
, slot
->seq_nr
);
599 res
->sr_timestamp
= jiffies
;
600 res
->sr_status_flags
= 0;
602 * sr_status is only set in decode_sequence, and so will remain
603 * set to 1 if an rpc level failure occurs.
607 rpc_call_start(task
);
610 /* Privileged tasks are queued with top priority */
611 if (args
->sa_privileged
)
612 rpc_sleep_on_priority(&tbl
->slot_tbl_waitq
, task
,
613 NULL
, RPC_PRIORITY_PRIVILEGED
);
615 rpc_sleep_on(&tbl
->slot_tbl_waitq
, task
, NULL
);
616 spin_unlock(&tbl
->slot_tbl_lock
);
619 EXPORT_SYMBOL_GPL(nfs41_setup_sequence
);
621 int nfs4_setup_sequence(const struct nfs_server
*server
,
622 struct nfs4_sequence_args
*args
,
623 struct nfs4_sequence_res
*res
,
624 struct rpc_task
*task
)
626 struct nfs4_session
*session
= nfs4_get_session(server
);
629 if (session
== NULL
) {
630 rpc_call_start(task
);
634 dprintk("--> %s clp %p session %p sr_slot %d\n",
635 __func__
, session
->clp
, session
, res
->sr_slot
?
636 res
->sr_slot
->slot_nr
: -1);
638 ret
= nfs41_setup_sequence(session
, args
, res
, task
);
640 dprintk("<-- %s status=%d\n", __func__
, ret
);
644 struct nfs41_call_sync_data
{
645 const struct nfs_server
*seq_server
;
646 struct nfs4_sequence_args
*seq_args
;
647 struct nfs4_sequence_res
*seq_res
;
650 static void nfs41_call_sync_prepare(struct rpc_task
*task
, void *calldata
)
652 struct nfs41_call_sync_data
*data
= calldata
;
653 struct nfs4_session
*session
= nfs4_get_session(data
->seq_server
);
655 dprintk("--> %s data->seq_server %p\n", __func__
, data
->seq_server
);
657 nfs41_setup_sequence(session
, data
->seq_args
, data
->seq_res
, task
);
660 static void nfs41_call_sync_done(struct rpc_task
*task
, void *calldata
)
662 struct nfs41_call_sync_data
*data
= calldata
;
664 nfs41_sequence_done(task
, data
->seq_res
);
667 static const struct rpc_call_ops nfs41_call_sync_ops
= {
668 .rpc_call_prepare
= nfs41_call_sync_prepare
,
669 .rpc_call_done
= nfs41_call_sync_done
,
672 static int nfs4_call_sync_sequence(struct rpc_clnt
*clnt
,
673 struct nfs_server
*server
,
674 struct rpc_message
*msg
,
675 struct nfs4_sequence_args
*args
,
676 struct nfs4_sequence_res
*res
)
679 struct rpc_task
*task
;
680 struct nfs41_call_sync_data data
= {
681 .seq_server
= server
,
685 struct rpc_task_setup task_setup
= {
688 .callback_ops
= &nfs41_call_sync_ops
,
689 .callback_data
= &data
692 task
= rpc_run_task(&task_setup
);
696 ret
= task
->tk_status
;
704 void nfs41_init_sequence(struct nfs4_sequence_args
*args
,
705 struct nfs4_sequence_res
*res
, int cache_reply
)
709 static void nfs4_set_sequence_privileged(struct nfs4_sequence_args
*args
)
714 static int nfs4_sequence_done(struct rpc_task
*task
,
715 struct nfs4_sequence_res
*res
)
719 #endif /* CONFIG_NFS_V4_1 */
722 int _nfs4_call_sync(struct rpc_clnt
*clnt
,
723 struct nfs_server
*server
,
724 struct rpc_message
*msg
,
725 struct nfs4_sequence_args
*args
,
726 struct nfs4_sequence_res
*res
)
728 return rpc_call_sync(clnt
, msg
, 0);
732 int nfs4_call_sync(struct rpc_clnt
*clnt
,
733 struct nfs_server
*server
,
734 struct rpc_message
*msg
,
735 struct nfs4_sequence_args
*args
,
736 struct nfs4_sequence_res
*res
,
739 nfs41_init_sequence(args
, res
, cache_reply
);
740 return server
->nfs_client
->cl_mvops
->call_sync(clnt
, server
, msg
,
744 static void update_changeattr(struct inode
*dir
, struct nfs4_change_info
*cinfo
)
746 struct nfs_inode
*nfsi
= NFS_I(dir
);
748 spin_lock(&dir
->i_lock
);
749 nfsi
->cache_validity
|= NFS_INO_INVALID_ATTR
|NFS_INO_INVALID_DATA
;
750 if (!cinfo
->atomic
|| cinfo
->before
!= dir
->i_version
)
751 nfs_force_lookup_revalidate(dir
);
752 dir
->i_version
= cinfo
->after
;
753 nfs_fscache_invalidate(dir
);
754 spin_unlock(&dir
->i_lock
);
757 struct nfs4_opendata
{
759 struct nfs_openargs o_arg
;
760 struct nfs_openres o_res
;
761 struct nfs_open_confirmargs c_arg
;
762 struct nfs_open_confirmres c_res
;
763 struct nfs4_string owner_name
;
764 struct nfs4_string group_name
;
765 struct nfs_fattr f_attr
;
766 struct nfs4_label
*f_label
;
768 struct dentry
*dentry
;
769 struct nfs4_state_owner
*owner
;
770 struct nfs4_state
*state
;
772 unsigned long timestamp
;
773 unsigned int rpc_done
: 1;
774 unsigned int is_recover
: 1;
779 static bool nfs4_clear_cap_atomic_open_v1(struct nfs_server
*server
,
780 int err
, struct nfs4_exception
*exception
)
784 if (!(server
->caps
& NFS_CAP_ATOMIC_OPEN_V1
))
786 server
->caps
&= ~NFS_CAP_ATOMIC_OPEN_V1
;
787 exception
->retry
= 1;
791 static enum open_claim_type4
792 nfs4_map_atomic_open_claim(struct nfs_server
*server
,
793 enum open_claim_type4 claim
)
795 if (server
->caps
& NFS_CAP_ATOMIC_OPEN_V1
)
800 case NFS4_OPEN_CLAIM_FH
:
801 return NFS4_OPEN_CLAIM_NULL
;
802 case NFS4_OPEN_CLAIM_DELEG_CUR_FH
:
803 return NFS4_OPEN_CLAIM_DELEGATE_CUR
;
804 case NFS4_OPEN_CLAIM_DELEG_PREV_FH
:
805 return NFS4_OPEN_CLAIM_DELEGATE_PREV
;
809 static void nfs4_init_opendata_res(struct nfs4_opendata
*p
)
811 p
->o_res
.f_attr
= &p
->f_attr
;
812 p
->o_res
.f_label
= p
->f_label
;
813 p
->o_res
.seqid
= p
->o_arg
.seqid
;
814 p
->c_res
.seqid
= p
->c_arg
.seqid
;
815 p
->o_res
.server
= p
->o_arg
.server
;
816 p
->o_res
.access_request
= p
->o_arg
.access
;
817 nfs_fattr_init(&p
->f_attr
);
818 nfs_fattr_init_names(&p
->f_attr
, &p
->owner_name
, &p
->group_name
);
821 static struct nfs4_opendata
*nfs4_opendata_alloc(struct dentry
*dentry
,
822 struct nfs4_state_owner
*sp
, fmode_t fmode
, int flags
,
823 const struct iattr
*attrs
,
824 struct nfs4_label
*label
,
825 enum open_claim_type4 claim
,
828 struct dentry
*parent
= dget_parent(dentry
);
829 struct inode
*dir
= parent
->d_inode
;
830 struct nfs_server
*server
= NFS_SERVER(dir
);
831 struct nfs4_opendata
*p
;
833 p
= kzalloc(sizeof(*p
), gfp_mask
);
837 p
->f_label
= nfs4_label_alloc(server
, gfp_mask
);
838 if (IS_ERR(p
->f_label
))
841 p
->o_arg
.seqid
= nfs_alloc_seqid(&sp
->so_seqid
, gfp_mask
);
842 if (p
->o_arg
.seqid
== NULL
)
844 nfs_sb_active(dentry
->d_sb
);
845 p
->dentry
= dget(dentry
);
848 atomic_inc(&sp
->so_count
);
849 p
->o_arg
.open_flags
= flags
;
850 p
->o_arg
.fmode
= fmode
& (FMODE_READ
|FMODE_WRITE
);
851 /* don't put an ACCESS op in OPEN compound if O_EXCL, because ACCESS
852 * will return permission denied for all bits until close */
853 if (!(flags
& O_EXCL
)) {
854 /* ask server to check for all possible rights as results
856 p
->o_arg
.access
= NFS4_ACCESS_READ
| NFS4_ACCESS_MODIFY
|
857 NFS4_ACCESS_EXTEND
| NFS4_ACCESS_EXECUTE
;
859 p
->o_arg
.clientid
= server
->nfs_client
->cl_clientid
;
860 p
->o_arg
.id
.create_time
= ktime_to_ns(sp
->so_seqid
.create_time
);
861 p
->o_arg
.id
.uniquifier
= sp
->so_seqid
.owner_id
;
862 p
->o_arg
.name
= &dentry
->d_name
;
863 p
->o_arg
.server
= server
;
864 p
->o_arg
.bitmask
= server
->attr_bitmask
;
865 p
->o_arg
.open_bitmap
= &nfs4_fattr_bitmap
[0];
866 p
->o_arg
.label
= label
;
867 p
->o_arg
.claim
= nfs4_map_atomic_open_claim(server
, claim
);
868 switch (p
->o_arg
.claim
) {
869 case NFS4_OPEN_CLAIM_NULL
:
870 case NFS4_OPEN_CLAIM_DELEGATE_CUR
:
871 case NFS4_OPEN_CLAIM_DELEGATE_PREV
:
872 p
->o_arg
.fh
= NFS_FH(dir
);
874 case NFS4_OPEN_CLAIM_PREVIOUS
:
875 case NFS4_OPEN_CLAIM_FH
:
876 case NFS4_OPEN_CLAIM_DELEG_CUR_FH
:
877 case NFS4_OPEN_CLAIM_DELEG_PREV_FH
:
878 p
->o_arg
.fh
= NFS_FH(dentry
->d_inode
);
880 if (attrs
!= NULL
&& attrs
->ia_valid
!= 0) {
883 p
->o_arg
.u
.attrs
= &p
->attrs
;
884 memcpy(&p
->attrs
, attrs
, sizeof(p
->attrs
));
887 verf
[1] = current
->pid
;
888 memcpy(p
->o_arg
.u
.verifier
.data
, verf
,
889 sizeof(p
->o_arg
.u
.verifier
.data
));
891 p
->c_arg
.fh
= &p
->o_res
.fh
;
892 p
->c_arg
.stateid
= &p
->o_res
.stateid
;
893 p
->c_arg
.seqid
= p
->o_arg
.seqid
;
894 nfs4_init_opendata_res(p
);
899 nfs4_label_free(p
->f_label
);
907 static void nfs4_opendata_free(struct kref
*kref
)
909 struct nfs4_opendata
*p
= container_of(kref
,
910 struct nfs4_opendata
, kref
);
911 struct super_block
*sb
= p
->dentry
->d_sb
;
913 nfs_free_seqid(p
->o_arg
.seqid
);
914 if (p
->state
!= NULL
)
915 nfs4_put_open_state(p
->state
);
916 nfs4_put_state_owner(p
->owner
);
918 nfs4_label_free(p
->f_label
);
923 nfs_fattr_free_names(&p
->f_attr
);
927 static void nfs4_opendata_put(struct nfs4_opendata
*p
)
930 kref_put(&p
->kref
, nfs4_opendata_free
);
933 static int nfs4_wait_for_completion_rpc_task(struct rpc_task
*task
)
937 ret
= rpc_wait_for_completion_task(task
);
941 static int can_open_cached(struct nfs4_state
*state
, fmode_t mode
, int open_mode
)
945 if (open_mode
& (O_EXCL
|O_TRUNC
))
947 switch (mode
& (FMODE_READ
|FMODE_WRITE
)) {
949 ret
|= test_bit(NFS_O_RDONLY_STATE
, &state
->flags
) != 0
950 && state
->n_rdonly
!= 0;
953 ret
|= test_bit(NFS_O_WRONLY_STATE
, &state
->flags
) != 0
954 && state
->n_wronly
!= 0;
956 case FMODE_READ
|FMODE_WRITE
:
957 ret
|= test_bit(NFS_O_RDWR_STATE
, &state
->flags
) != 0
958 && state
->n_rdwr
!= 0;
964 static int can_open_delegated(struct nfs_delegation
*delegation
, fmode_t fmode
)
966 if (delegation
== NULL
)
968 if ((delegation
->type
& fmode
) != fmode
)
970 if (test_bit(NFS_DELEGATION_NEED_RECLAIM
, &delegation
->flags
))
972 if (test_bit(NFS_DELEGATION_RETURNING
, &delegation
->flags
))
974 nfs_mark_delegation_referenced(delegation
);
978 static void update_open_stateflags(struct nfs4_state
*state
, fmode_t fmode
)
987 case FMODE_READ
|FMODE_WRITE
:
990 nfs4_state_set_mode_locked(state
, state
->state
| fmode
);
993 static void nfs_set_open_stateid_locked(struct nfs4_state
*state
, nfs4_stateid
*stateid
, fmode_t fmode
)
995 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0)
996 nfs4_stateid_copy(&state
->stateid
, stateid
);
997 nfs4_stateid_copy(&state
->open_stateid
, stateid
);
998 set_bit(NFS_OPEN_STATE
, &state
->flags
);
1001 set_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1004 set_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1006 case FMODE_READ
|FMODE_WRITE
:
1007 set_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1011 static void nfs_set_open_stateid(struct nfs4_state
*state
, nfs4_stateid
*stateid
, fmode_t fmode
)
1013 write_seqlock(&state
->seqlock
);
1014 nfs_set_open_stateid_locked(state
, stateid
, fmode
);
1015 write_sequnlock(&state
->seqlock
);
1018 static void __update_open_stateid(struct nfs4_state
*state
, nfs4_stateid
*open_stateid
, const nfs4_stateid
*deleg_stateid
, fmode_t fmode
)
1021 * Protect the call to nfs4_state_set_mode_locked and
1022 * serialise the stateid update
1024 write_seqlock(&state
->seqlock
);
1025 if (deleg_stateid
!= NULL
) {
1026 nfs4_stateid_copy(&state
->stateid
, deleg_stateid
);
1027 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1029 if (open_stateid
!= NULL
)
1030 nfs_set_open_stateid_locked(state
, open_stateid
, fmode
);
1031 write_sequnlock(&state
->seqlock
);
1032 spin_lock(&state
->owner
->so_lock
);
1033 update_open_stateflags(state
, fmode
);
1034 spin_unlock(&state
->owner
->so_lock
);
1037 static int update_open_stateid(struct nfs4_state
*state
, nfs4_stateid
*open_stateid
, nfs4_stateid
*delegation
, fmode_t fmode
)
1039 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
1040 struct nfs_delegation
*deleg_cur
;
1043 fmode
&= (FMODE_READ
|FMODE_WRITE
);
1046 deleg_cur
= rcu_dereference(nfsi
->delegation
);
1047 if (deleg_cur
== NULL
)
1050 spin_lock(&deleg_cur
->lock
);
1051 if (nfsi
->delegation
!= deleg_cur
||
1052 test_bit(NFS_DELEGATION_RETURNING
, &deleg_cur
->flags
) ||
1053 (deleg_cur
->type
& fmode
) != fmode
)
1054 goto no_delegation_unlock
;
1056 if (delegation
== NULL
)
1057 delegation
= &deleg_cur
->stateid
;
1058 else if (!nfs4_stateid_match(&deleg_cur
->stateid
, delegation
))
1059 goto no_delegation_unlock
;
1061 nfs_mark_delegation_referenced(deleg_cur
);
1062 __update_open_stateid(state
, open_stateid
, &deleg_cur
->stateid
, fmode
);
1064 no_delegation_unlock
:
1065 spin_unlock(&deleg_cur
->lock
);
1069 if (!ret
&& open_stateid
!= NULL
) {
1070 __update_open_stateid(state
, open_stateid
, NULL
, fmode
);
1078 static void nfs4_return_incompatible_delegation(struct inode
*inode
, fmode_t fmode
)
1080 struct nfs_delegation
*delegation
;
1083 delegation
= rcu_dereference(NFS_I(inode
)->delegation
);
1084 if (delegation
== NULL
|| (delegation
->type
& fmode
) == fmode
) {
1089 nfs4_inode_return_delegation(inode
);
1092 static struct nfs4_state
*nfs4_try_open_cached(struct nfs4_opendata
*opendata
)
1094 struct nfs4_state
*state
= opendata
->state
;
1095 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
1096 struct nfs_delegation
*delegation
;
1097 int open_mode
= opendata
->o_arg
.open_flags
& (O_EXCL
|O_TRUNC
);
1098 fmode_t fmode
= opendata
->o_arg
.fmode
;
1099 nfs4_stateid stateid
;
1103 if (can_open_cached(state
, fmode
, open_mode
)) {
1104 spin_lock(&state
->owner
->so_lock
);
1105 if (can_open_cached(state
, fmode
, open_mode
)) {
1106 update_open_stateflags(state
, fmode
);
1107 spin_unlock(&state
->owner
->so_lock
);
1108 goto out_return_state
;
1110 spin_unlock(&state
->owner
->so_lock
);
1113 delegation
= rcu_dereference(nfsi
->delegation
);
1114 if (!can_open_delegated(delegation
, fmode
)) {
1118 /* Save the delegation */
1119 nfs4_stateid_copy(&stateid
, &delegation
->stateid
);
1121 nfs_release_seqid(opendata
->o_arg
.seqid
);
1122 if (!opendata
->is_recover
) {
1123 ret
= nfs_may_open(state
->inode
, state
->owner
->so_cred
, open_mode
);
1129 /* Try to update the stateid using the delegation */
1130 if (update_open_stateid(state
, NULL
, &stateid
, fmode
))
1131 goto out_return_state
;
1134 return ERR_PTR(ret
);
1136 atomic_inc(&state
->count
);
1141 nfs4_opendata_check_deleg(struct nfs4_opendata
*data
, struct nfs4_state
*state
)
1143 struct nfs_client
*clp
= NFS_SERVER(state
->inode
)->nfs_client
;
1144 struct nfs_delegation
*delegation
;
1145 int delegation_flags
= 0;
1148 delegation
= rcu_dereference(NFS_I(state
->inode
)->delegation
);
1150 delegation_flags
= delegation
->flags
;
1152 if (data
->o_arg
.claim
== NFS4_OPEN_CLAIM_DELEGATE_CUR
) {
1153 pr_err_ratelimited("NFS: Broken NFSv4 server %s is "
1154 "returning a delegation for "
1155 "OPEN(CLAIM_DELEGATE_CUR)\n",
1157 } else if ((delegation_flags
& 1UL<<NFS_DELEGATION_NEED_RECLAIM
) == 0)
1158 nfs_inode_set_delegation(state
->inode
,
1159 data
->owner
->so_cred
,
1162 nfs_inode_reclaim_delegation(state
->inode
,
1163 data
->owner
->so_cred
,
1168 * Check the inode attributes against the CLAIM_PREVIOUS returned attributes
1169 * and update the nfs4_state.
1171 static struct nfs4_state
*
1172 _nfs4_opendata_reclaim_to_nfs4_state(struct nfs4_opendata
*data
)
1174 struct inode
*inode
= data
->state
->inode
;
1175 struct nfs4_state
*state
= data
->state
;
1178 if (!data
->rpc_done
) {
1179 ret
= data
->rpc_status
;
1184 if (!(data
->f_attr
.valid
& NFS_ATTR_FATTR_TYPE
) ||
1185 !(data
->f_attr
.valid
& NFS_ATTR_FATTR_FILEID
) ||
1186 !(data
->f_attr
.valid
& NFS_ATTR_FATTR_CHANGE
))
1190 state
= nfs4_get_open_state(inode
, data
->owner
);
1194 ret
= nfs_refresh_inode(inode
, &data
->f_attr
);
1198 if (data
->o_res
.delegation_type
!= 0)
1199 nfs4_opendata_check_deleg(data
, state
);
1200 update_open_stateid(state
, &data
->o_res
.stateid
, NULL
,
1205 return ERR_PTR(ret
);
1209 static struct nfs4_state
*
1210 _nfs4_opendata_to_nfs4_state(struct nfs4_opendata
*data
)
1212 struct inode
*inode
;
1213 struct nfs4_state
*state
= NULL
;
1216 if (!data
->rpc_done
) {
1217 state
= nfs4_try_open_cached(data
);
1222 if (!(data
->f_attr
.valid
& NFS_ATTR_FATTR
))
1224 inode
= nfs_fhget(data
->dir
->d_sb
, &data
->o_res
.fh
, &data
->f_attr
, data
->f_label
);
1225 ret
= PTR_ERR(inode
);
1229 state
= nfs4_get_open_state(inode
, data
->owner
);
1232 if (data
->o_res
.delegation_type
!= 0)
1233 nfs4_opendata_check_deleg(data
, state
);
1234 update_open_stateid(state
, &data
->o_res
.stateid
, NULL
,
1238 nfs_release_seqid(data
->o_arg
.seqid
);
1243 return ERR_PTR(ret
);
1246 static struct nfs4_state
*
1247 nfs4_opendata_to_nfs4_state(struct nfs4_opendata
*data
)
1249 if (data
->o_arg
.claim
== NFS4_OPEN_CLAIM_PREVIOUS
)
1250 return _nfs4_opendata_reclaim_to_nfs4_state(data
);
1251 return _nfs4_opendata_to_nfs4_state(data
);
1254 static struct nfs_open_context
*nfs4_state_find_open_context(struct nfs4_state
*state
)
1256 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
1257 struct nfs_open_context
*ctx
;
1259 spin_lock(&state
->inode
->i_lock
);
1260 list_for_each_entry(ctx
, &nfsi
->open_files
, list
) {
1261 if (ctx
->state
!= state
)
1263 get_nfs_open_context(ctx
);
1264 spin_unlock(&state
->inode
->i_lock
);
1267 spin_unlock(&state
->inode
->i_lock
);
1268 return ERR_PTR(-ENOENT
);
1271 static struct nfs4_opendata
*nfs4_open_recoverdata_alloc(struct nfs_open_context
*ctx
,
1272 struct nfs4_state
*state
, enum open_claim_type4 claim
)
1274 struct nfs4_opendata
*opendata
;
1276 opendata
= nfs4_opendata_alloc(ctx
->dentry
, state
->owner
, 0, 0,
1277 NULL
, NULL
, claim
, GFP_NOFS
);
1278 if (opendata
== NULL
)
1279 return ERR_PTR(-ENOMEM
);
1280 opendata
->state
= state
;
1281 atomic_inc(&state
->count
);
1285 static int nfs4_open_recover_helper(struct nfs4_opendata
*opendata
, fmode_t fmode
, struct nfs4_state
**res
)
1287 struct nfs4_state
*newstate
;
1290 opendata
->o_arg
.open_flags
= 0;
1291 opendata
->o_arg
.fmode
= fmode
;
1292 memset(&opendata
->o_res
, 0, sizeof(opendata
->o_res
));
1293 memset(&opendata
->c_res
, 0, sizeof(opendata
->c_res
));
1294 nfs4_init_opendata_res(opendata
);
1295 ret
= _nfs4_recover_proc_open(opendata
);
1298 newstate
= nfs4_opendata_to_nfs4_state(opendata
);
1299 if (IS_ERR(newstate
))
1300 return PTR_ERR(newstate
);
1301 nfs4_close_state(newstate
, fmode
);
1306 static int nfs4_open_recover(struct nfs4_opendata
*opendata
, struct nfs4_state
*state
)
1308 struct nfs4_state
*newstate
;
1311 /* memory barrier prior to reading state->n_* */
1312 clear_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1313 clear_bit(NFS_OPEN_STATE
, &state
->flags
);
1315 if (state
->n_rdwr
!= 0) {
1316 clear_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1317 ret
= nfs4_open_recover_helper(opendata
, FMODE_READ
|FMODE_WRITE
, &newstate
);
1320 if (newstate
!= state
)
1323 if (state
->n_wronly
!= 0) {
1324 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1325 ret
= nfs4_open_recover_helper(opendata
, FMODE_WRITE
, &newstate
);
1328 if (newstate
!= state
)
1331 if (state
->n_rdonly
!= 0) {
1332 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1333 ret
= nfs4_open_recover_helper(opendata
, FMODE_READ
, &newstate
);
1336 if (newstate
!= state
)
1340 * We may have performed cached opens for all three recoveries.
1341 * Check if we need to update the current stateid.
1343 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0 &&
1344 !nfs4_stateid_match(&state
->stateid
, &state
->open_stateid
)) {
1345 write_seqlock(&state
->seqlock
);
1346 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0)
1347 nfs4_stateid_copy(&state
->stateid
, &state
->open_stateid
);
1348 write_sequnlock(&state
->seqlock
);
1355 * reclaim state on the server after a reboot.
1357 static int _nfs4_do_open_reclaim(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1359 struct nfs_delegation
*delegation
;
1360 struct nfs4_opendata
*opendata
;
1361 fmode_t delegation_type
= 0;
1364 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
,
1365 NFS4_OPEN_CLAIM_PREVIOUS
);
1366 if (IS_ERR(opendata
))
1367 return PTR_ERR(opendata
);
1369 delegation
= rcu_dereference(NFS_I(state
->inode
)->delegation
);
1370 if (delegation
!= NULL
&& test_bit(NFS_DELEGATION_NEED_RECLAIM
, &delegation
->flags
) != 0)
1371 delegation_type
= delegation
->type
;
1373 opendata
->o_arg
.u
.delegation_type
= delegation_type
;
1374 status
= nfs4_open_recover(opendata
, state
);
1375 nfs4_opendata_put(opendata
);
1379 static int nfs4_do_open_reclaim(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1381 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1382 struct nfs4_exception exception
= { };
1385 err
= _nfs4_do_open_reclaim(ctx
, state
);
1386 if (nfs4_clear_cap_atomic_open_v1(server
, err
, &exception
))
1388 if (err
!= -NFS4ERR_DELAY
)
1390 nfs4_handle_exception(server
, err
, &exception
);
1391 } while (exception
.retry
);
1395 static int nfs4_open_reclaim(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
1397 struct nfs_open_context
*ctx
;
1400 ctx
= nfs4_state_find_open_context(state
);
1403 ret
= nfs4_do_open_reclaim(ctx
, state
);
1404 put_nfs_open_context(ctx
);
1408 static int nfs4_handle_delegation_recall_error(struct nfs_server
*server
, struct nfs4_state
*state
, const nfs4_stateid
*stateid
, int err
)
1412 printk(KERN_ERR
"NFS: %s: unhandled error "
1413 "%d.\n", __func__
, err
);
1418 case -NFS4ERR_BADSESSION
:
1419 case -NFS4ERR_BADSLOT
:
1420 case -NFS4ERR_BAD_HIGH_SLOT
:
1421 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
1422 case -NFS4ERR_DEADSESSION
:
1423 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1424 nfs4_schedule_session_recovery(server
->nfs_client
->cl_session
, err
);
1426 case -NFS4ERR_STALE_CLIENTID
:
1427 case -NFS4ERR_STALE_STATEID
:
1428 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1429 case -NFS4ERR_EXPIRED
:
1430 /* Don't recall a delegation if it was lost */
1431 nfs4_schedule_lease_recovery(server
->nfs_client
);
1433 case -NFS4ERR_DELEG_REVOKED
:
1434 case -NFS4ERR_ADMIN_REVOKED
:
1435 case -NFS4ERR_BAD_STATEID
:
1436 case -NFS4ERR_OPENMODE
:
1437 nfs_inode_find_state_and_recover(state
->inode
,
1439 nfs4_schedule_stateid_recovery(server
, state
);
1441 case -NFS4ERR_DELAY
:
1442 case -NFS4ERR_GRACE
:
1443 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1447 case -NFS4ERR_DENIED
:
1448 /* kill_proc(fl->fl_pid, SIGLOST, 1); */
1454 int nfs4_open_delegation_recall(struct nfs_open_context
*ctx
, struct nfs4_state
*state
, const nfs4_stateid
*stateid
)
1456 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1457 struct nfs4_opendata
*opendata
;
1460 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
,
1461 NFS4_OPEN_CLAIM_DELEG_CUR_FH
);
1462 if (IS_ERR(opendata
))
1463 return PTR_ERR(opendata
);
1464 nfs4_stateid_copy(&opendata
->o_arg
.u
.delegation
, stateid
);
1465 err
= nfs4_open_recover(opendata
, state
);
1466 nfs4_opendata_put(opendata
);
1467 return nfs4_handle_delegation_recall_error(server
, state
, stateid
, err
);
1470 static void nfs4_open_confirm_done(struct rpc_task
*task
, void *calldata
)
1472 struct nfs4_opendata
*data
= calldata
;
1474 data
->rpc_status
= task
->tk_status
;
1475 if (data
->rpc_status
== 0) {
1476 nfs4_stateid_copy(&data
->o_res
.stateid
, &data
->c_res
.stateid
);
1477 nfs_confirm_seqid(&data
->owner
->so_seqid
, 0);
1478 renew_lease(data
->o_res
.server
, data
->timestamp
);
1483 static void nfs4_open_confirm_release(void *calldata
)
1485 struct nfs4_opendata
*data
= calldata
;
1486 struct nfs4_state
*state
= NULL
;
1488 /* If this request hasn't been cancelled, do nothing */
1489 if (data
->cancelled
== 0)
1491 /* In case of error, no cleanup! */
1492 if (!data
->rpc_done
)
1494 state
= nfs4_opendata_to_nfs4_state(data
);
1496 nfs4_close_state(state
, data
->o_arg
.fmode
);
1498 nfs4_opendata_put(data
);
1501 static const struct rpc_call_ops nfs4_open_confirm_ops
= {
1502 .rpc_call_done
= nfs4_open_confirm_done
,
1503 .rpc_release
= nfs4_open_confirm_release
,
1507 * Note: On error, nfs4_proc_open_confirm will free the struct nfs4_opendata
1509 static int _nfs4_proc_open_confirm(struct nfs4_opendata
*data
)
1511 struct nfs_server
*server
= NFS_SERVER(data
->dir
->d_inode
);
1512 struct rpc_task
*task
;
1513 struct rpc_message msg
= {
1514 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_CONFIRM
],
1515 .rpc_argp
= &data
->c_arg
,
1516 .rpc_resp
= &data
->c_res
,
1517 .rpc_cred
= data
->owner
->so_cred
,
1519 struct rpc_task_setup task_setup_data
= {
1520 .rpc_client
= server
->client
,
1521 .rpc_message
= &msg
,
1522 .callback_ops
= &nfs4_open_confirm_ops
,
1523 .callback_data
= data
,
1524 .workqueue
= nfsiod_workqueue
,
1525 .flags
= RPC_TASK_ASYNC
,
1529 kref_get(&data
->kref
);
1531 data
->rpc_status
= 0;
1532 data
->timestamp
= jiffies
;
1533 task
= rpc_run_task(&task_setup_data
);
1535 return PTR_ERR(task
);
1536 status
= nfs4_wait_for_completion_rpc_task(task
);
1538 data
->cancelled
= 1;
1541 status
= data
->rpc_status
;
1546 static void nfs4_open_prepare(struct rpc_task
*task
, void *calldata
)
1548 struct nfs4_opendata
*data
= calldata
;
1549 struct nfs4_state_owner
*sp
= data
->owner
;
1550 struct nfs_client
*clp
= sp
->so_server
->nfs_client
;
1552 if (nfs_wait_on_sequence(data
->o_arg
.seqid
, task
) != 0)
1555 * Check if we still need to send an OPEN call, or if we can use
1556 * a delegation instead.
1558 if (data
->state
!= NULL
) {
1559 struct nfs_delegation
*delegation
;
1561 if (can_open_cached(data
->state
, data
->o_arg
.fmode
, data
->o_arg
.open_flags
))
1564 delegation
= rcu_dereference(NFS_I(data
->state
->inode
)->delegation
);
1565 if (data
->o_arg
.claim
!= NFS4_OPEN_CLAIM_DELEGATE_CUR
&&
1566 data
->o_arg
.claim
!= NFS4_OPEN_CLAIM_DELEG_CUR_FH
&&
1567 can_open_delegated(delegation
, data
->o_arg
.fmode
))
1568 goto unlock_no_action
;
1571 /* Update client id. */
1572 data
->o_arg
.clientid
= clp
->cl_clientid
;
1573 switch (data
->o_arg
.claim
) {
1574 case NFS4_OPEN_CLAIM_PREVIOUS
:
1575 case NFS4_OPEN_CLAIM_DELEG_CUR_FH
:
1576 case NFS4_OPEN_CLAIM_DELEG_PREV_FH
:
1577 data
->o_arg
.open_bitmap
= &nfs4_open_noattr_bitmap
[0];
1578 case NFS4_OPEN_CLAIM_FH
:
1579 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_NOATTR
];
1580 nfs_copy_fh(&data
->o_res
.fh
, data
->o_arg
.fh
);
1582 data
->timestamp
= jiffies
;
1583 if (nfs4_setup_sequence(data
->o_arg
.server
,
1584 &data
->o_arg
.seq_args
,
1585 &data
->o_res
.seq_res
,
1587 nfs_release_seqid(data
->o_arg
.seqid
);
1589 /* Set the create mode (note dependency on the session type) */
1590 data
->o_arg
.createmode
= NFS4_CREATE_UNCHECKED
;
1591 if (data
->o_arg
.open_flags
& O_EXCL
) {
1592 data
->o_arg
.createmode
= NFS4_CREATE_EXCLUSIVE
;
1593 if (nfs4_has_persistent_session(clp
))
1594 data
->o_arg
.createmode
= NFS4_CREATE_GUARDED
;
1595 else if (clp
->cl_mvops
->minor_version
> 0)
1596 data
->o_arg
.createmode
= NFS4_CREATE_EXCLUSIVE4_1
;
1602 task
->tk_action
= NULL
;
1604 nfs4_sequence_done(task
, &data
->o_res
.seq_res
);
1607 static void nfs4_open_done(struct rpc_task
*task
, void *calldata
)
1609 struct nfs4_opendata
*data
= calldata
;
1611 data
->rpc_status
= task
->tk_status
;
1613 if (!nfs4_sequence_done(task
, &data
->o_res
.seq_res
))
1616 if (task
->tk_status
== 0) {
1617 if (data
->o_res
.f_attr
->valid
& NFS_ATTR_FATTR_TYPE
) {
1618 switch (data
->o_res
.f_attr
->mode
& S_IFMT
) {
1622 data
->rpc_status
= -ELOOP
;
1625 data
->rpc_status
= -EISDIR
;
1628 data
->rpc_status
= -ENOTDIR
;
1631 renew_lease(data
->o_res
.server
, data
->timestamp
);
1632 if (!(data
->o_res
.rflags
& NFS4_OPEN_RESULT_CONFIRM
))
1633 nfs_confirm_seqid(&data
->owner
->so_seqid
, 0);
1638 static void nfs4_open_release(void *calldata
)
1640 struct nfs4_opendata
*data
= calldata
;
1641 struct nfs4_state
*state
= NULL
;
1643 /* If this request hasn't been cancelled, do nothing */
1644 if (data
->cancelled
== 0)
1646 /* In case of error, no cleanup! */
1647 if (data
->rpc_status
!= 0 || !data
->rpc_done
)
1649 /* In case we need an open_confirm, no cleanup! */
1650 if (data
->o_res
.rflags
& NFS4_OPEN_RESULT_CONFIRM
)
1652 state
= nfs4_opendata_to_nfs4_state(data
);
1654 nfs4_close_state(state
, data
->o_arg
.fmode
);
1656 nfs4_opendata_put(data
);
1659 static const struct rpc_call_ops nfs4_open_ops
= {
1660 .rpc_call_prepare
= nfs4_open_prepare
,
1661 .rpc_call_done
= nfs4_open_done
,
1662 .rpc_release
= nfs4_open_release
,
1665 static int nfs4_run_open_task(struct nfs4_opendata
*data
, int isrecover
)
1667 struct inode
*dir
= data
->dir
->d_inode
;
1668 struct nfs_server
*server
= NFS_SERVER(dir
);
1669 struct nfs_openargs
*o_arg
= &data
->o_arg
;
1670 struct nfs_openres
*o_res
= &data
->o_res
;
1671 struct rpc_task
*task
;
1672 struct rpc_message msg
= {
1673 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN
],
1676 .rpc_cred
= data
->owner
->so_cred
,
1678 struct rpc_task_setup task_setup_data
= {
1679 .rpc_client
= server
->client
,
1680 .rpc_message
= &msg
,
1681 .callback_ops
= &nfs4_open_ops
,
1682 .callback_data
= data
,
1683 .workqueue
= nfsiod_workqueue
,
1684 .flags
= RPC_TASK_ASYNC
,
1688 nfs41_init_sequence(&o_arg
->seq_args
, &o_res
->seq_res
, 1);
1689 kref_get(&data
->kref
);
1691 data
->rpc_status
= 0;
1692 data
->cancelled
= 0;
1693 data
->is_recover
= 0;
1695 nfs4_set_sequence_privileged(&o_arg
->seq_args
);
1696 data
->is_recover
= 1;
1698 task
= rpc_run_task(&task_setup_data
);
1700 return PTR_ERR(task
);
1701 status
= nfs4_wait_for_completion_rpc_task(task
);
1703 data
->cancelled
= 1;
1706 status
= data
->rpc_status
;
1712 static int _nfs4_recover_proc_open(struct nfs4_opendata
*data
)
1714 struct inode
*dir
= data
->dir
->d_inode
;
1715 struct nfs_openres
*o_res
= &data
->o_res
;
1718 status
= nfs4_run_open_task(data
, 1);
1719 if (status
!= 0 || !data
->rpc_done
)
1722 nfs_fattr_map_and_free_names(NFS_SERVER(dir
), &data
->f_attr
);
1724 if (o_res
->rflags
& NFS4_OPEN_RESULT_CONFIRM
) {
1725 status
= _nfs4_proc_open_confirm(data
);
1733 static int nfs4_opendata_access(struct rpc_cred
*cred
,
1734 struct nfs4_opendata
*opendata
,
1735 struct nfs4_state
*state
, fmode_t fmode
,
1738 struct nfs_access_entry cache
;
1741 /* access call failed or for some reason the server doesn't
1742 * support any access modes -- defer access call until later */
1743 if (opendata
->o_res
.access_supported
== 0)
1747 /* don't check MAY_WRITE - a newly created file may not have
1748 * write mode bits, but POSIX allows the creating process to write.
1749 * use openflags to check for exec, because fmode won't
1750 * always have FMODE_EXEC set when file open for exec. */
1751 if (openflags
& __FMODE_EXEC
) {
1752 /* ONLY check for exec rights */
1754 } else if (fmode
& FMODE_READ
)
1758 cache
.jiffies
= jiffies
;
1759 nfs_access_set_mask(&cache
, opendata
->o_res
.access_result
);
1760 nfs_access_add_cache(state
->inode
, &cache
);
1762 if ((mask
& ~cache
.mask
& (MAY_READ
| MAY_EXEC
)) == 0)
1765 /* even though OPEN succeeded, access is denied. Close the file */
1766 nfs4_close_state(state
, fmode
);
1771 * Note: On error, nfs4_proc_open will free the struct nfs4_opendata
1773 static int _nfs4_proc_open(struct nfs4_opendata
*data
)
1775 struct inode
*dir
= data
->dir
->d_inode
;
1776 struct nfs_server
*server
= NFS_SERVER(dir
);
1777 struct nfs_openargs
*o_arg
= &data
->o_arg
;
1778 struct nfs_openres
*o_res
= &data
->o_res
;
1781 status
= nfs4_run_open_task(data
, 0);
1782 if (!data
->rpc_done
)
1785 if (status
== -NFS4ERR_BADNAME
&&
1786 !(o_arg
->open_flags
& O_CREAT
))
1791 nfs_fattr_map_and_free_names(server
, &data
->f_attr
);
1793 if (o_arg
->open_flags
& O_CREAT
)
1794 update_changeattr(dir
, &o_res
->cinfo
);
1795 if ((o_res
->rflags
& NFS4_OPEN_RESULT_LOCKTYPE_POSIX
) == 0)
1796 server
->caps
&= ~NFS_CAP_POSIX_LOCK
;
1797 if(o_res
->rflags
& NFS4_OPEN_RESULT_CONFIRM
) {
1798 status
= _nfs4_proc_open_confirm(data
);
1802 if (!(o_res
->f_attr
->valid
& NFS_ATTR_FATTR
))
1803 _nfs4_proc_getattr(server
, &o_res
->fh
, o_res
->f_attr
, o_res
->f_label
);
1807 static int nfs4_recover_expired_lease(struct nfs_server
*server
)
1809 return nfs4_client_recover_expired_lease(server
->nfs_client
);
1814 * reclaim state on the server after a network partition.
1815 * Assumes caller holds the appropriate lock
1817 static int _nfs4_open_expired(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1819 struct nfs4_opendata
*opendata
;
1822 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
,
1823 NFS4_OPEN_CLAIM_FH
);
1824 if (IS_ERR(opendata
))
1825 return PTR_ERR(opendata
);
1826 ret
= nfs4_open_recover(opendata
, state
);
1828 d_drop(ctx
->dentry
);
1829 nfs4_opendata_put(opendata
);
1833 static int nfs4_do_open_expired(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1835 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1836 struct nfs4_exception exception
= { };
1840 err
= _nfs4_open_expired(ctx
, state
);
1841 if (nfs4_clear_cap_atomic_open_v1(server
, err
, &exception
))
1846 case -NFS4ERR_GRACE
:
1847 case -NFS4ERR_DELAY
:
1848 nfs4_handle_exception(server
, err
, &exception
);
1851 } while (exception
.retry
);
1856 static int nfs4_open_expired(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
1858 struct nfs_open_context
*ctx
;
1861 ctx
= nfs4_state_find_open_context(state
);
1864 ret
= nfs4_do_open_expired(ctx
, state
);
1865 put_nfs_open_context(ctx
);
1869 #if defined(CONFIG_NFS_V4_1)
1870 static void nfs41_clear_delegation_stateid(struct nfs4_state
*state
)
1872 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1873 nfs4_stateid
*stateid
= &state
->stateid
;
1876 /* If a state reset has been done, test_stateid is unneeded */
1877 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0)
1880 status
= nfs41_test_stateid(server
, stateid
);
1881 if (status
!= NFS_OK
) {
1882 /* Free the stateid unless the server explicitly
1883 * informs us the stateid is unrecognized. */
1884 if (status
!= -NFS4ERR_BAD_STATEID
)
1885 nfs41_free_stateid(server
, stateid
);
1886 nfs_remove_bad_delegation(state
->inode
);
1888 write_seqlock(&state
->seqlock
);
1889 nfs4_stateid_copy(&state
->stateid
, &state
->open_stateid
);
1890 write_sequnlock(&state
->seqlock
);
1891 clear_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1896 * nfs41_check_open_stateid - possibly free an open stateid
1898 * @state: NFSv4 state for an inode
1900 * Returns NFS_OK if recovery for this stateid is now finished.
1901 * Otherwise a negative NFS4ERR value is returned.
1903 static int nfs41_check_open_stateid(struct nfs4_state
*state
)
1905 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1906 nfs4_stateid
*stateid
= &state
->open_stateid
;
1909 /* If a state reset has been done, test_stateid is unneeded */
1910 if ((test_bit(NFS_O_RDONLY_STATE
, &state
->flags
) == 0) &&
1911 (test_bit(NFS_O_WRONLY_STATE
, &state
->flags
) == 0) &&
1912 (test_bit(NFS_O_RDWR_STATE
, &state
->flags
) == 0))
1913 return -NFS4ERR_BAD_STATEID
;
1915 status
= nfs41_test_stateid(server
, stateid
);
1916 if (status
!= NFS_OK
) {
1917 /* Free the stateid unless the server explicitly
1918 * informs us the stateid is unrecognized. */
1919 if (status
!= -NFS4ERR_BAD_STATEID
)
1920 nfs41_free_stateid(server
, stateid
);
1922 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1923 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1924 clear_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1925 clear_bit(NFS_OPEN_STATE
, &state
->flags
);
1930 static int nfs41_open_expired(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
1934 nfs41_clear_delegation_stateid(state
);
1935 status
= nfs41_check_open_stateid(state
);
1936 if (status
!= NFS_OK
)
1937 status
= nfs4_open_expired(sp
, state
);
1943 * on an EXCLUSIVE create, the server should send back a bitmask with FATTR4-*
1944 * fields corresponding to attributes that were used to store the verifier.
1945 * Make sure we clobber those fields in the later setattr call
1947 static inline void nfs4_exclusive_attrset(struct nfs4_opendata
*opendata
, struct iattr
*sattr
)
1949 if ((opendata
->o_res
.attrset
[1] & FATTR4_WORD1_TIME_ACCESS
) &&
1950 !(sattr
->ia_valid
& ATTR_ATIME_SET
))
1951 sattr
->ia_valid
|= ATTR_ATIME
;
1953 if ((opendata
->o_res
.attrset
[1] & FATTR4_WORD1_TIME_MODIFY
) &&
1954 !(sattr
->ia_valid
& ATTR_MTIME_SET
))
1955 sattr
->ia_valid
|= ATTR_MTIME
;
1958 static int _nfs4_open_and_get_state(struct nfs4_opendata
*opendata
,
1961 struct nfs4_state
**res
)
1963 struct nfs4_state_owner
*sp
= opendata
->owner
;
1964 struct nfs_server
*server
= sp
->so_server
;
1965 struct nfs4_state
*state
;
1969 seq
= raw_seqcount_begin(&sp
->so_reclaim_seqcount
);
1971 ret
= _nfs4_proc_open(opendata
);
1975 state
= nfs4_opendata_to_nfs4_state(opendata
);
1976 ret
= PTR_ERR(state
);
1979 if (server
->caps
& NFS_CAP_POSIX_LOCK
)
1980 set_bit(NFS_STATE_POSIX_LOCKS
, &state
->flags
);
1982 ret
= nfs4_opendata_access(sp
->so_cred
, opendata
, state
, fmode
, flags
);
1986 if (read_seqcount_retry(&sp
->so_reclaim_seqcount
, seq
))
1987 nfs4_schedule_stateid_recovery(server
, state
);
1994 * Returns a referenced nfs4_state
1996 static int _nfs4_do_open(struct inode
*dir
,
1997 struct dentry
*dentry
,
2000 struct iattr
*sattr
,
2001 struct nfs4_label
*label
,
2002 struct rpc_cred
*cred
,
2003 struct nfs4_state
**res
,
2004 struct nfs4_threshold
**ctx_th
)
2006 struct nfs4_state_owner
*sp
;
2007 struct nfs4_state
*state
= NULL
;
2008 struct nfs_server
*server
= NFS_SERVER(dir
);
2009 struct nfs4_opendata
*opendata
;
2010 enum open_claim_type4 claim
= NFS4_OPEN_CLAIM_NULL
;
2011 struct nfs4_label
*olabel
= NULL
;
2014 /* Protect against reboot recovery conflicts */
2016 sp
= nfs4_get_state_owner(server
, cred
, GFP_KERNEL
);
2018 dprintk("nfs4_do_open: nfs4_get_state_owner failed!\n");
2021 status
= nfs4_recover_expired_lease(server
);
2023 goto err_put_state_owner
;
2024 if (dentry
->d_inode
!= NULL
)
2025 nfs4_return_incompatible_delegation(dentry
->d_inode
, fmode
);
2027 if (dentry
->d_inode
)
2028 claim
= NFS4_OPEN_CLAIM_FH
;
2029 opendata
= nfs4_opendata_alloc(dentry
, sp
, fmode
, flags
, sattr
,
2030 label
, claim
, GFP_KERNEL
);
2031 if (opendata
== NULL
)
2032 goto err_put_state_owner
;
2035 olabel
= nfs4_label_alloc(server
, GFP_KERNEL
);
2036 if (IS_ERR(olabel
)) {
2037 status
= PTR_ERR(olabel
);
2038 goto err_opendata_put
;
2042 if (ctx_th
&& server
->attr_bitmask
[2] & FATTR4_WORD2_MDSTHRESHOLD
) {
2043 opendata
->f_attr
.mdsthreshold
= pnfs_mdsthreshold_alloc();
2044 if (!opendata
->f_attr
.mdsthreshold
)
2045 goto err_free_label
;
2046 opendata
->o_arg
.open_bitmap
= &nfs4_pnfs_open_bitmap
[0];
2048 if (dentry
->d_inode
!= NULL
)
2049 opendata
->state
= nfs4_get_open_state(dentry
->d_inode
, sp
);
2051 status
= _nfs4_open_and_get_state(opendata
, fmode
, flags
, &state
);
2053 goto err_free_label
;
2055 if ((opendata
->o_arg
.open_flags
& O_EXCL
) &&
2056 (opendata
->o_arg
.createmode
!= NFS4_CREATE_GUARDED
)) {
2057 nfs4_exclusive_attrset(opendata
, sattr
);
2059 nfs_fattr_init(opendata
->o_res
.f_attr
);
2060 status
= nfs4_do_setattr(state
->inode
, cred
,
2061 opendata
->o_res
.f_attr
, sattr
,
2062 state
, label
, olabel
);
2064 nfs_setattr_update_inode(state
->inode
, sattr
);
2065 nfs_post_op_update_inode(state
->inode
, opendata
->o_res
.f_attr
);
2069 if (pnfs_use_threshold(ctx_th
, opendata
->f_attr
.mdsthreshold
, server
))
2070 *ctx_th
= opendata
->f_attr
.mdsthreshold
;
2072 kfree(opendata
->f_attr
.mdsthreshold
);
2073 opendata
->f_attr
.mdsthreshold
= NULL
;
2075 nfs4_label_free(olabel
);
2077 nfs4_opendata_put(opendata
);
2078 nfs4_put_state_owner(sp
);
2082 nfs4_label_free(olabel
);
2084 kfree(opendata
->f_attr
.mdsthreshold
);
2085 nfs4_opendata_put(opendata
);
2086 err_put_state_owner
:
2087 nfs4_put_state_owner(sp
);
2094 static struct nfs4_state
*nfs4_do_open(struct inode
*dir
,
2095 struct dentry
*dentry
,
2098 struct iattr
*sattr
,
2099 struct nfs4_label
*label
,
2100 struct rpc_cred
*cred
,
2101 struct nfs4_threshold
**ctx_th
)
2103 struct nfs_server
*server
= NFS_SERVER(dir
);
2104 struct nfs4_exception exception
= { };
2105 struct nfs4_state
*res
;
2108 fmode
&= FMODE_READ
|FMODE_WRITE
|FMODE_EXEC
;
2110 status
= _nfs4_do_open(dir
, dentry
, fmode
, flags
, sattr
, label
, cred
,
2114 /* NOTE: BAD_SEQID means the server and client disagree about the
2115 * book-keeping w.r.t. state-changing operations
2116 * (OPEN/CLOSE/LOCK/LOCKU...)
2117 * It is actually a sign of a bug on the client or on the server.
2119 * If we receive a BAD_SEQID error in the particular case of
2120 * doing an OPEN, we assume that nfs_increment_open_seqid() will
2121 * have unhashed the old state_owner for us, and that we can
2122 * therefore safely retry using a new one. We should still warn
2123 * the user though...
2125 if (status
== -NFS4ERR_BAD_SEQID
) {
2126 pr_warn_ratelimited("NFS: v4 server %s "
2127 " returned a bad sequence-id error!\n",
2128 NFS_SERVER(dir
)->nfs_client
->cl_hostname
);
2129 exception
.retry
= 1;
2133 * BAD_STATEID on OPEN means that the server cancelled our
2134 * state before it received the OPEN_CONFIRM.
2135 * Recover by retrying the request as per the discussion
2136 * on Page 181 of RFC3530.
2138 if (status
== -NFS4ERR_BAD_STATEID
) {
2139 exception
.retry
= 1;
2142 if (status
== -EAGAIN
) {
2143 /* We must have found a delegation */
2144 exception
.retry
= 1;
2147 if (nfs4_clear_cap_atomic_open_v1(server
, status
, &exception
))
2149 res
= ERR_PTR(nfs4_handle_exception(server
,
2150 status
, &exception
));
2151 } while (exception
.retry
);
2155 static int _nfs4_do_setattr(struct inode
*inode
, struct rpc_cred
*cred
,
2156 struct nfs_fattr
*fattr
, struct iattr
*sattr
,
2157 struct nfs4_state
*state
, struct nfs4_label
*ilabel
,
2158 struct nfs4_label
*olabel
)
2160 struct nfs_server
*server
= NFS_SERVER(inode
);
2161 struct nfs_setattrargs arg
= {
2162 .fh
= NFS_FH(inode
),
2165 .bitmask
= server
->attr_bitmask
,
2168 struct nfs_setattrres res
= {
2173 struct rpc_message msg
= {
2174 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETATTR
],
2179 unsigned long timestamp
= jiffies
;
2184 nfs_fattr_init(fattr
);
2186 /* Servers should only apply open mode checks for file size changes */
2187 truncate
= (sattr
->ia_valid
& ATTR_SIZE
) ? true : false;
2188 fmode
= truncate
? FMODE_WRITE
: FMODE_READ
;
2190 if (nfs4_copy_delegation_stateid(&arg
.stateid
, inode
, fmode
)) {
2191 /* Use that stateid */
2192 } else if (truncate
&& state
!= NULL
&& nfs4_valid_open_stateid(state
)) {
2193 struct nfs_lockowner lockowner
= {
2194 .l_owner
= current
->files
,
2195 .l_pid
= current
->tgid
,
2197 nfs4_select_rw_stateid(&arg
.stateid
, state
, FMODE_WRITE
,
2200 nfs4_stateid_copy(&arg
.stateid
, &zero_stateid
);
2202 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
2203 if (status
== 0 && state
!= NULL
)
2204 renew_lease(server
, timestamp
);
2208 static int nfs4_do_setattr(struct inode
*inode
, struct rpc_cred
*cred
,
2209 struct nfs_fattr
*fattr
, struct iattr
*sattr
,
2210 struct nfs4_state
*state
, struct nfs4_label
*ilabel
,
2211 struct nfs4_label
*olabel
)
2213 struct nfs_server
*server
= NFS_SERVER(inode
);
2214 struct nfs4_exception exception
= {
2220 err
= _nfs4_do_setattr(inode
, cred
, fattr
, sattr
, state
, ilabel
, olabel
);
2222 case -NFS4ERR_OPENMODE
:
2223 if (!(sattr
->ia_valid
& ATTR_SIZE
)) {
2224 pr_warn_once("NFSv4: server %s is incorrectly "
2225 "applying open mode checks to "
2226 "a SETATTR that is not "
2227 "changing file size.\n",
2228 server
->nfs_client
->cl_hostname
);
2230 if (state
&& !(state
->state
& FMODE_WRITE
)) {
2232 if (sattr
->ia_valid
& ATTR_OPEN
)
2237 err
= nfs4_handle_exception(server
, err
, &exception
);
2238 } while (exception
.retry
);
2243 struct nfs4_closedata
{
2244 struct inode
*inode
;
2245 struct nfs4_state
*state
;
2246 struct nfs_closeargs arg
;
2247 struct nfs_closeres res
;
2248 struct nfs_fattr fattr
;
2249 unsigned long timestamp
;
2254 static void nfs4_free_closedata(void *data
)
2256 struct nfs4_closedata
*calldata
= data
;
2257 struct nfs4_state_owner
*sp
= calldata
->state
->owner
;
2258 struct super_block
*sb
= calldata
->state
->inode
->i_sb
;
2261 pnfs_roc_release(calldata
->state
->inode
);
2262 nfs4_put_open_state(calldata
->state
);
2263 nfs_free_seqid(calldata
->arg
.seqid
);
2264 nfs4_put_state_owner(sp
);
2265 nfs_sb_deactive(sb
);
2269 static void nfs4_close_clear_stateid_flags(struct nfs4_state
*state
,
2272 spin_lock(&state
->owner
->so_lock
);
2273 clear_bit(NFS_O_RDWR_STATE
, &state
->flags
);
2274 switch (fmode
& (FMODE_READ
|FMODE_WRITE
)) {
2276 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
2279 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
2282 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
2283 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
2284 clear_bit(NFS_OPEN_STATE
, &state
->flags
);
2286 spin_unlock(&state
->owner
->so_lock
);
2289 static void nfs4_close_done(struct rpc_task
*task
, void *data
)
2291 struct nfs4_closedata
*calldata
= data
;
2292 struct nfs4_state
*state
= calldata
->state
;
2293 struct nfs_server
*server
= NFS_SERVER(calldata
->inode
);
2295 dprintk("%s: begin!\n", __func__
);
2296 if (!nfs4_sequence_done(task
, &calldata
->res
.seq_res
))
2298 /* hmm. we are done with the inode, and in the process of freeing
2299 * the state_owner. we keep this around to process errors
2301 switch (task
->tk_status
) {
2304 pnfs_roc_set_barrier(state
->inode
,
2305 calldata
->roc_barrier
);
2306 nfs_set_open_stateid(state
, &calldata
->res
.stateid
, 0);
2307 renew_lease(server
, calldata
->timestamp
);
2308 nfs4_close_clear_stateid_flags(state
,
2309 calldata
->arg
.fmode
);
2311 case -NFS4ERR_STALE_STATEID
:
2312 case -NFS4ERR_OLD_STATEID
:
2313 case -NFS4ERR_BAD_STATEID
:
2314 case -NFS4ERR_EXPIRED
:
2315 if (calldata
->arg
.fmode
== 0)
2318 if (nfs4_async_handle_error(task
, server
, state
) == -EAGAIN
)
2319 rpc_restart_call_prepare(task
);
2321 nfs_release_seqid(calldata
->arg
.seqid
);
2322 nfs_refresh_inode(calldata
->inode
, calldata
->res
.fattr
);
2323 dprintk("%s: done, ret = %d!\n", __func__
, task
->tk_status
);
2326 static void nfs4_close_prepare(struct rpc_task
*task
, void *data
)
2328 struct nfs4_closedata
*calldata
= data
;
2329 struct nfs4_state
*state
= calldata
->state
;
2330 struct inode
*inode
= calldata
->inode
;
2333 dprintk("%s: begin!\n", __func__
);
2334 if (nfs_wait_on_sequence(calldata
->arg
.seqid
, task
) != 0)
2337 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_DOWNGRADE
];
2338 calldata
->arg
.fmode
= FMODE_READ
|FMODE_WRITE
;
2339 spin_lock(&state
->owner
->so_lock
);
2340 /* Calculate the change in open mode */
2341 if (state
->n_rdwr
== 0) {
2342 if (state
->n_rdonly
== 0) {
2343 call_close
|= test_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
2344 call_close
|= test_bit(NFS_O_RDWR_STATE
, &state
->flags
);
2345 calldata
->arg
.fmode
&= ~FMODE_READ
;
2347 if (state
->n_wronly
== 0) {
2348 call_close
|= test_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
2349 call_close
|= test_bit(NFS_O_RDWR_STATE
, &state
->flags
);
2350 calldata
->arg
.fmode
&= ~FMODE_WRITE
;
2353 if (!nfs4_valid_open_stateid(state
))
2355 spin_unlock(&state
->owner
->so_lock
);
2358 /* Note: exit _without_ calling nfs4_close_done */
2362 if (calldata
->arg
.fmode
== 0) {
2363 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CLOSE
];
2364 if (calldata
->roc
&&
2365 pnfs_roc_drain(inode
, &calldata
->roc_barrier
, task
)) {
2366 nfs_release_seqid(calldata
->arg
.seqid
);
2371 nfs_fattr_init(calldata
->res
.fattr
);
2372 calldata
->timestamp
= jiffies
;
2373 if (nfs4_setup_sequence(NFS_SERVER(inode
),
2374 &calldata
->arg
.seq_args
,
2375 &calldata
->res
.seq_res
,
2377 nfs_release_seqid(calldata
->arg
.seqid
);
2378 dprintk("%s: done!\n", __func__
);
2381 task
->tk_action
= NULL
;
2383 nfs4_sequence_done(task
, &calldata
->res
.seq_res
);
2386 static const struct rpc_call_ops nfs4_close_ops
= {
2387 .rpc_call_prepare
= nfs4_close_prepare
,
2388 .rpc_call_done
= nfs4_close_done
,
2389 .rpc_release
= nfs4_free_closedata
,
2393 * It is possible for data to be read/written from a mem-mapped file
2394 * after the sys_close call (which hits the vfs layer as a flush).
2395 * This means that we can't safely call nfsv4 close on a file until
2396 * the inode is cleared. This in turn means that we are not good
2397 * NFSv4 citizens - we do not indicate to the server to update the file's
2398 * share state even when we are done with one of the three share
2399 * stateid's in the inode.
2401 * NOTE: Caller must be holding the sp->so_owner semaphore!
2403 int nfs4_do_close(struct nfs4_state
*state
, gfp_t gfp_mask
, int wait
)
2405 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
2406 struct nfs4_closedata
*calldata
;
2407 struct nfs4_state_owner
*sp
= state
->owner
;
2408 struct rpc_task
*task
;
2409 struct rpc_message msg
= {
2410 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CLOSE
],
2411 .rpc_cred
= state
->owner
->so_cred
,
2413 struct rpc_task_setup task_setup_data
= {
2414 .rpc_client
= server
->client
,
2415 .rpc_message
= &msg
,
2416 .callback_ops
= &nfs4_close_ops
,
2417 .workqueue
= nfsiod_workqueue
,
2418 .flags
= RPC_TASK_ASYNC
,
2420 int status
= -ENOMEM
;
2422 calldata
= kzalloc(sizeof(*calldata
), gfp_mask
);
2423 if (calldata
== NULL
)
2425 nfs41_init_sequence(&calldata
->arg
.seq_args
, &calldata
->res
.seq_res
, 1);
2426 calldata
->inode
= state
->inode
;
2427 calldata
->state
= state
;
2428 calldata
->arg
.fh
= NFS_FH(state
->inode
);
2429 calldata
->arg
.stateid
= &state
->open_stateid
;
2430 /* Serialization for the sequence id */
2431 calldata
->arg
.seqid
= nfs_alloc_seqid(&state
->owner
->so_seqid
, gfp_mask
);
2432 if (calldata
->arg
.seqid
== NULL
)
2433 goto out_free_calldata
;
2434 calldata
->arg
.fmode
= 0;
2435 calldata
->arg
.bitmask
= server
->cache_consistency_bitmask
;
2436 calldata
->res
.fattr
= &calldata
->fattr
;
2437 calldata
->res
.seqid
= calldata
->arg
.seqid
;
2438 calldata
->res
.server
= server
;
2439 calldata
->roc
= pnfs_roc(state
->inode
);
2440 nfs_sb_active(calldata
->inode
->i_sb
);
2442 msg
.rpc_argp
= &calldata
->arg
;
2443 msg
.rpc_resp
= &calldata
->res
;
2444 task_setup_data
.callback_data
= calldata
;
2445 task
= rpc_run_task(&task_setup_data
);
2447 return PTR_ERR(task
);
2450 status
= rpc_wait_for_completion_task(task
);
2456 nfs4_put_open_state(state
);
2457 nfs4_put_state_owner(sp
);
2461 static struct inode
*
2462 nfs4_atomic_open(struct inode
*dir
, struct nfs_open_context
*ctx
, int open_flags
, struct iattr
*attr
)
2464 struct nfs4_state
*state
;
2465 struct nfs4_label
*label
= NULL
;
2467 /* Protect against concurrent sillydeletes */
2468 state
= nfs4_do_open(dir
, ctx
->dentry
, ctx
->mode
, open_flags
, attr
, label
,
2469 ctx
->cred
, &ctx
->mdsthreshold
);
2471 return ERR_CAST(state
);
2473 return igrab(state
->inode
);
2476 static void nfs4_close_context(struct nfs_open_context
*ctx
, int is_sync
)
2478 if (ctx
->state
== NULL
)
2481 nfs4_close_sync(ctx
->state
, ctx
->mode
);
2483 nfs4_close_state(ctx
->state
, ctx
->mode
);
2486 static int _nfs4_server_capabilities(struct nfs_server
*server
, struct nfs_fh
*fhandle
)
2488 struct nfs4_server_caps_arg args
= {
2491 struct nfs4_server_caps_res res
= {};
2492 struct rpc_message msg
= {
2493 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SERVER_CAPS
],
2499 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2501 memcpy(server
->attr_bitmask
, res
.attr_bitmask
, sizeof(server
->attr_bitmask
));
2502 server
->caps
&= ~(NFS_CAP_ACLS
|NFS_CAP_HARDLINKS
|
2503 NFS_CAP_SYMLINKS
|NFS_CAP_FILEID
|
2504 NFS_CAP_MODE
|NFS_CAP_NLINK
|NFS_CAP_OWNER
|
2505 NFS_CAP_OWNER_GROUP
|NFS_CAP_ATIME
|
2506 NFS_CAP_CTIME
|NFS_CAP_MTIME
);
2507 if (res
.attr_bitmask
[0] & FATTR4_WORD0_ACL
)
2508 server
->caps
|= NFS_CAP_ACLS
;
2509 if (res
.has_links
!= 0)
2510 server
->caps
|= NFS_CAP_HARDLINKS
;
2511 if (res
.has_symlinks
!= 0)
2512 server
->caps
|= NFS_CAP_SYMLINKS
;
2513 if (res
.attr_bitmask
[0] & FATTR4_WORD0_FILEID
)
2514 server
->caps
|= NFS_CAP_FILEID
;
2515 if (res
.attr_bitmask
[1] & FATTR4_WORD1_MODE
)
2516 server
->caps
|= NFS_CAP_MODE
;
2517 if (res
.attr_bitmask
[1] & FATTR4_WORD1_NUMLINKS
)
2518 server
->caps
|= NFS_CAP_NLINK
;
2519 if (res
.attr_bitmask
[1] & FATTR4_WORD1_OWNER
)
2520 server
->caps
|= NFS_CAP_OWNER
;
2521 if (res
.attr_bitmask
[1] & FATTR4_WORD1_OWNER_GROUP
)
2522 server
->caps
|= NFS_CAP_OWNER_GROUP
;
2523 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_ACCESS
)
2524 server
->caps
|= NFS_CAP_ATIME
;
2525 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_METADATA
)
2526 server
->caps
|= NFS_CAP_CTIME
;
2527 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_MODIFY
)
2528 server
->caps
|= NFS_CAP_MTIME
;
2530 memcpy(server
->cache_consistency_bitmask
, res
.attr_bitmask
, sizeof(server
->cache_consistency_bitmask
));
2531 server
->cache_consistency_bitmask
[0] &= FATTR4_WORD0_CHANGE
|FATTR4_WORD0_SIZE
;
2532 server
->cache_consistency_bitmask
[1] &= FATTR4_WORD1_TIME_METADATA
|FATTR4_WORD1_TIME_MODIFY
;
2533 server
->acl_bitmask
= res
.acl_bitmask
;
2534 server
->fh_expire_type
= res
.fh_expire_type
;
2540 int nfs4_server_capabilities(struct nfs_server
*server
, struct nfs_fh
*fhandle
)
2542 struct nfs4_exception exception
= { };
2545 err
= nfs4_handle_exception(server
,
2546 _nfs4_server_capabilities(server
, fhandle
),
2548 } while (exception
.retry
);
2552 static int _nfs4_lookup_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2553 struct nfs_fsinfo
*info
)
2555 struct nfs4_lookup_root_arg args
= {
2556 .bitmask
= nfs4_fattr_bitmap
,
2558 struct nfs4_lookup_res res
= {
2560 .fattr
= info
->fattr
,
2563 struct rpc_message msg
= {
2564 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOOKUP_ROOT
],
2569 nfs_fattr_init(info
->fattr
);
2570 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2573 static int nfs4_lookup_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2574 struct nfs_fsinfo
*info
)
2576 struct nfs4_exception exception
= { };
2579 err
= _nfs4_lookup_root(server
, fhandle
, info
);
2582 case -NFS4ERR_WRONGSEC
:
2585 err
= nfs4_handle_exception(server
, err
, &exception
);
2587 } while (exception
.retry
);
2592 static int nfs4_lookup_root_sec(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2593 struct nfs_fsinfo
*info
, rpc_authflavor_t flavor
)
2595 struct rpc_auth
*auth
;
2598 auth
= rpcauth_create(flavor
, server
->client
);
2603 ret
= nfs4_lookup_root(server
, fhandle
, info
);
2609 * Retry pseudoroot lookup with various security flavors. We do this when:
2611 * NFSv4.0: the PUTROOTFH operation returns NFS4ERR_WRONGSEC
2612 * NFSv4.1: the server does not support the SECINFO_NO_NAME operation
2614 * Returns zero on success, or a negative NFS4ERR value, or a
2615 * negative errno value.
2617 static int nfs4_find_root_sec(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2618 struct nfs_fsinfo
*info
)
2620 /* Per 3530bis 15.33.5 */
2621 static const rpc_authflavor_t flav_array
[] = {
2625 RPC_AUTH_UNIX
, /* courtesy */
2628 int status
= -EPERM
;
2631 for (i
= 0; i
< ARRAY_SIZE(flav_array
); i
++) {
2632 status
= nfs4_lookup_root_sec(server
, fhandle
, info
, flav_array
[i
]);
2633 if (status
== -NFS4ERR_WRONGSEC
|| status
== -EACCES
)
2639 * -EACCESS could mean that the user doesn't have correct permissions
2640 * to access the mount. It could also mean that we tried to mount
2641 * with a gss auth flavor, but rpc.gssd isn't running. Either way,
2642 * existing mount programs don't handle -EACCES very well so it should
2643 * be mapped to -EPERM instead.
2645 if (status
== -EACCES
)
2650 static int nfs4_do_find_root_sec(struct nfs_server
*server
,
2651 struct nfs_fh
*fhandle
, struct nfs_fsinfo
*info
)
2653 int mv
= server
->nfs_client
->cl_minorversion
;
2654 return nfs_v4_minor_ops
[mv
]->find_root_sec(server
, fhandle
, info
);
2658 * nfs4_proc_get_rootfh - get file handle for server's pseudoroot
2659 * @server: initialized nfs_server handle
2660 * @fhandle: we fill in the pseudo-fs root file handle
2661 * @info: we fill in an FSINFO struct
2663 * Returns zero on success, or a negative errno.
2665 int nfs4_proc_get_rootfh(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2666 struct nfs_fsinfo
*info
)
2670 status
= nfs4_lookup_root(server
, fhandle
, info
);
2671 if ((status
== -NFS4ERR_WRONGSEC
) &&
2672 !(server
->flags
& NFS_MOUNT_SECFLAVOUR
))
2673 status
= nfs4_do_find_root_sec(server
, fhandle
, info
);
2676 status
= nfs4_server_capabilities(server
, fhandle
);
2678 status
= nfs4_do_fsinfo(server
, fhandle
, info
);
2680 return nfs4_map_errors(status
);
2683 static int nfs4_proc_get_root(struct nfs_server
*server
, struct nfs_fh
*mntfh
,
2684 struct nfs_fsinfo
*info
)
2687 struct nfs_fattr
*fattr
= info
->fattr
;
2688 struct nfs4_label
*label
= NULL
;
2690 error
= nfs4_server_capabilities(server
, mntfh
);
2692 dprintk("nfs4_get_root: getcaps error = %d\n", -error
);
2696 label
= nfs4_label_alloc(server
, GFP_KERNEL
);
2698 return PTR_ERR(label
);
2700 error
= nfs4_proc_getattr(server
, mntfh
, fattr
, label
);
2702 dprintk("nfs4_get_root: getattr error = %d\n", -error
);
2703 goto err_free_label
;
2706 if (fattr
->valid
& NFS_ATTR_FATTR_FSID
&&
2707 !nfs_fsid_equal(&server
->fsid
, &fattr
->fsid
))
2708 memcpy(&server
->fsid
, &fattr
->fsid
, sizeof(server
->fsid
));
2711 nfs4_label_free(label
);
2717 * Get locations and (maybe) other attributes of a referral.
2718 * Note that we'll actually follow the referral later when
2719 * we detect fsid mismatch in inode revalidation
2721 static int nfs4_get_referral(struct rpc_clnt
*client
, struct inode
*dir
,
2722 const struct qstr
*name
, struct nfs_fattr
*fattr
,
2723 struct nfs_fh
*fhandle
)
2725 int status
= -ENOMEM
;
2726 struct page
*page
= NULL
;
2727 struct nfs4_fs_locations
*locations
= NULL
;
2729 page
= alloc_page(GFP_KERNEL
);
2732 locations
= kmalloc(sizeof(struct nfs4_fs_locations
), GFP_KERNEL
);
2733 if (locations
== NULL
)
2736 status
= nfs4_proc_fs_locations(client
, dir
, name
, locations
, page
);
2739 /* Make sure server returned a different fsid for the referral */
2740 if (nfs_fsid_equal(&NFS_SERVER(dir
)->fsid
, &locations
->fattr
.fsid
)) {
2741 dprintk("%s: server did not return a different fsid for"
2742 " a referral at %s\n", __func__
, name
->name
);
2746 /* Fixup attributes for the nfs_lookup() call to nfs_fhget() */
2747 nfs_fixup_referral_attributes(&locations
->fattr
);
2749 /* replace the lookup nfs_fattr with the locations nfs_fattr */
2750 memcpy(fattr
, &locations
->fattr
, sizeof(struct nfs_fattr
));
2751 memset(fhandle
, 0, sizeof(struct nfs_fh
));
2759 static int _nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2760 struct nfs_fattr
*fattr
, struct nfs4_label
*label
)
2762 struct nfs4_getattr_arg args
= {
2764 .bitmask
= server
->attr_bitmask
,
2766 struct nfs4_getattr_res res
= {
2771 struct rpc_message msg
= {
2772 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETATTR
],
2777 nfs_fattr_init(fattr
);
2778 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2781 static int nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2782 struct nfs_fattr
*fattr
, struct nfs4_label
*label
)
2784 struct nfs4_exception exception
= { };
2787 err
= nfs4_handle_exception(server
,
2788 _nfs4_proc_getattr(server
, fhandle
, fattr
, label
),
2790 } while (exception
.retry
);
2795 * The file is not closed if it is opened due to the a request to change
2796 * the size of the file. The open call will not be needed once the
2797 * VFS layer lookup-intents are implemented.
2799 * Close is called when the inode is destroyed.
2800 * If we haven't opened the file for O_WRONLY, we
2801 * need to in the size_change case to obtain a stateid.
2804 * Because OPEN is always done by name in nfsv4, it is
2805 * possible that we opened a different file by the same
2806 * name. We can recognize this race condition, but we
2807 * can't do anything about it besides returning an error.
2809 * This will be fixed with VFS changes (lookup-intent).
2812 nfs4_proc_setattr(struct dentry
*dentry
, struct nfs_fattr
*fattr
,
2813 struct iattr
*sattr
)
2815 struct inode
*inode
= dentry
->d_inode
;
2816 struct rpc_cred
*cred
= NULL
;
2817 struct nfs4_state
*state
= NULL
;
2818 struct nfs4_label
*label
= NULL
;
2821 if (pnfs_ld_layoutret_on_setattr(inode
))
2822 pnfs_commit_and_return_layout(inode
);
2824 nfs_fattr_init(fattr
);
2826 /* Deal with open(O_TRUNC) */
2827 if (sattr
->ia_valid
& ATTR_OPEN
)
2828 sattr
->ia_valid
&= ~(ATTR_MTIME
|ATTR_CTIME
|ATTR_OPEN
);
2830 /* Optimization: if the end result is no change, don't RPC */
2831 if ((sattr
->ia_valid
& ~(ATTR_FILE
)) == 0)
2834 /* Search for an existing open(O_WRITE) file */
2835 if (sattr
->ia_valid
& ATTR_FILE
) {
2836 struct nfs_open_context
*ctx
;
2838 ctx
= nfs_file_open_context(sattr
->ia_file
);
2845 label
= nfs4_label_alloc(NFS_SERVER(inode
), GFP_KERNEL
);
2847 return PTR_ERR(label
);
2849 status
= nfs4_do_setattr(inode
, cred
, fattr
, sattr
, state
, NULL
, label
);
2851 nfs_setattr_update_inode(inode
, sattr
);
2853 nfs4_label_free(label
);
2857 static int _nfs4_proc_lookup(struct rpc_clnt
*clnt
, struct inode
*dir
,
2858 const struct qstr
*name
, struct nfs_fh
*fhandle
,
2859 struct nfs_fattr
*fattr
, struct nfs4_label
*label
)
2861 struct nfs_server
*server
= NFS_SERVER(dir
);
2863 struct nfs4_lookup_arg args
= {
2864 .bitmask
= server
->attr_bitmask
,
2865 .dir_fh
= NFS_FH(dir
),
2868 struct nfs4_lookup_res res
= {
2873 struct rpc_message msg
= {
2874 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOOKUP
],
2879 nfs_fattr_init(fattr
);
2881 dprintk("NFS call lookup %s\n", name
->name
);
2882 status
= nfs4_call_sync(clnt
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2883 dprintk("NFS reply lookup: %d\n", status
);
2887 static void nfs_fixup_secinfo_attributes(struct nfs_fattr
*fattr
)
2889 fattr
->valid
|= NFS_ATTR_FATTR_TYPE
| NFS_ATTR_FATTR_MODE
|
2890 NFS_ATTR_FATTR_NLINK
| NFS_ATTR_FATTR_MOUNTPOINT
;
2891 fattr
->mode
= S_IFDIR
| S_IRUGO
| S_IXUGO
;
2895 static int nfs4_proc_lookup_common(struct rpc_clnt
**clnt
, struct inode
*dir
,
2896 struct qstr
*name
, struct nfs_fh
*fhandle
,
2897 struct nfs_fattr
*fattr
, struct nfs4_label
*label
)
2899 struct nfs4_exception exception
= { };
2900 struct rpc_clnt
*client
= *clnt
;
2903 err
= _nfs4_proc_lookup(client
, dir
, name
, fhandle
, fattr
, label
);
2905 case -NFS4ERR_BADNAME
:
2908 case -NFS4ERR_MOVED
:
2909 err
= nfs4_get_referral(client
, dir
, name
, fattr
, fhandle
);
2911 case -NFS4ERR_WRONGSEC
:
2913 if (client
!= *clnt
)
2916 client
= nfs4_create_sec_client(client
, dir
, name
);
2918 return PTR_ERR(client
);
2920 exception
.retry
= 1;
2923 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
, &exception
);
2925 } while (exception
.retry
);
2930 else if (client
!= *clnt
)
2931 rpc_shutdown_client(client
);
2936 static int nfs4_proc_lookup(struct inode
*dir
, struct qstr
*name
,
2937 struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
,
2938 struct nfs4_label
*label
)
2941 struct rpc_clnt
*client
= NFS_CLIENT(dir
);
2943 status
= nfs4_proc_lookup_common(&client
, dir
, name
, fhandle
, fattr
, label
);
2944 if (client
!= NFS_CLIENT(dir
)) {
2945 rpc_shutdown_client(client
);
2946 nfs_fixup_secinfo_attributes(fattr
);
2952 nfs4_proc_lookup_mountpoint(struct inode
*dir
, struct qstr
*name
,
2953 struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
2956 struct rpc_clnt
*client
= rpc_clone_client(NFS_CLIENT(dir
));
2958 status
= nfs4_proc_lookup_common(&client
, dir
, name
, fhandle
, fattr
, NULL
);
2960 rpc_shutdown_client(client
);
2961 return ERR_PTR(status
);
2966 static int _nfs4_proc_access(struct inode
*inode
, struct nfs_access_entry
*entry
)
2968 struct nfs_server
*server
= NFS_SERVER(inode
);
2969 struct nfs4_accessargs args
= {
2970 .fh
= NFS_FH(inode
),
2971 .bitmask
= server
->cache_consistency_bitmask
,
2973 struct nfs4_accessres res
= {
2976 struct rpc_message msg
= {
2977 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_ACCESS
],
2980 .rpc_cred
= entry
->cred
,
2982 int mode
= entry
->mask
;
2986 * Determine which access bits we want to ask for...
2988 if (mode
& MAY_READ
)
2989 args
.access
|= NFS4_ACCESS_READ
;
2990 if (S_ISDIR(inode
->i_mode
)) {
2991 if (mode
& MAY_WRITE
)
2992 args
.access
|= NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
| NFS4_ACCESS_DELETE
;
2993 if (mode
& MAY_EXEC
)
2994 args
.access
|= NFS4_ACCESS_LOOKUP
;
2996 if (mode
& MAY_WRITE
)
2997 args
.access
|= NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
;
2998 if (mode
& MAY_EXEC
)
2999 args
.access
|= NFS4_ACCESS_EXECUTE
;
3002 res
.fattr
= nfs_alloc_fattr();
3003 if (res
.fattr
== NULL
)
3006 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3008 nfs_access_set_mask(entry
, res
.access
);
3009 nfs_refresh_inode(inode
, res
.fattr
);
3011 nfs_free_fattr(res
.fattr
);
3015 static int nfs4_proc_access(struct inode
*inode
, struct nfs_access_entry
*entry
)
3017 struct nfs4_exception exception
= { };
3020 err
= nfs4_handle_exception(NFS_SERVER(inode
),
3021 _nfs4_proc_access(inode
, entry
),
3023 } while (exception
.retry
);
3028 * TODO: For the time being, we don't try to get any attributes
3029 * along with any of the zero-copy operations READ, READDIR,
3032 * In the case of the first three, we want to put the GETATTR
3033 * after the read-type operation -- this is because it is hard
3034 * to predict the length of a GETATTR response in v4, and thus
3035 * align the READ data correctly. This means that the GETATTR
3036 * may end up partially falling into the page cache, and we should
3037 * shift it into the 'tail' of the xdr_buf before processing.
3038 * To do this efficiently, we need to know the total length
3039 * of data received, which doesn't seem to be available outside
3042 * In the case of WRITE, we also want to put the GETATTR after
3043 * the operation -- in this case because we want to make sure
3044 * we get the post-operation mtime and size.
3046 * Both of these changes to the XDR layer would in fact be quite
3047 * minor, but I decided to leave them for a subsequent patch.
3049 static int _nfs4_proc_readlink(struct inode
*inode
, struct page
*page
,
3050 unsigned int pgbase
, unsigned int pglen
)
3052 struct nfs4_readlink args
= {
3053 .fh
= NFS_FH(inode
),
3058 struct nfs4_readlink_res res
;
3059 struct rpc_message msg
= {
3060 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READLINK
],
3065 return nfs4_call_sync(NFS_SERVER(inode
)->client
, NFS_SERVER(inode
), &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3068 static int nfs4_proc_readlink(struct inode
*inode
, struct page
*page
,
3069 unsigned int pgbase
, unsigned int pglen
)
3071 struct nfs4_exception exception
= { };
3074 err
= nfs4_handle_exception(NFS_SERVER(inode
),
3075 _nfs4_proc_readlink(inode
, page
, pgbase
, pglen
),
3077 } while (exception
.retry
);
3082 * This is just for mknod. open(O_CREAT) will always do ->open_context().
3085 nfs4_proc_create(struct inode
*dir
, struct dentry
*dentry
, struct iattr
*sattr
,
3088 struct nfs4_label
*ilabel
= NULL
;
3089 struct nfs_open_context
*ctx
;
3090 struct nfs4_state
*state
;
3093 ctx
= alloc_nfs_open_context(dentry
, FMODE_READ
);
3095 return PTR_ERR(ctx
);
3097 sattr
->ia_mode
&= ~current_umask();
3098 state
= nfs4_do_open(dir
, dentry
, ctx
->mode
,
3099 flags
, sattr
, ilabel
, ctx
->cred
,
3100 &ctx
->mdsthreshold
);
3102 if (IS_ERR(state
)) {
3103 status
= PTR_ERR(state
);
3106 d_add(dentry
, igrab(state
->inode
));
3107 nfs_set_verifier(dentry
, nfs_save_change_attribute(dir
));
3110 put_nfs_open_context(ctx
);
3114 static int _nfs4_proc_remove(struct inode
*dir
, struct qstr
*name
)
3116 struct nfs_server
*server
= NFS_SERVER(dir
);
3117 struct nfs_removeargs args
= {
3121 struct nfs_removeres res
= {
3124 struct rpc_message msg
= {
3125 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_REMOVE
],
3131 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 1);
3133 update_changeattr(dir
, &res
.cinfo
);
3137 static int nfs4_proc_remove(struct inode
*dir
, struct qstr
*name
)
3139 struct nfs4_exception exception
= { };
3142 err
= nfs4_handle_exception(NFS_SERVER(dir
),
3143 _nfs4_proc_remove(dir
, name
),
3145 } while (exception
.retry
);
3149 static void nfs4_proc_unlink_setup(struct rpc_message
*msg
, struct inode
*dir
)
3151 struct nfs_server
*server
= NFS_SERVER(dir
);
3152 struct nfs_removeargs
*args
= msg
->rpc_argp
;
3153 struct nfs_removeres
*res
= msg
->rpc_resp
;
3155 res
->server
= server
;
3156 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_REMOVE
];
3157 nfs41_init_sequence(&args
->seq_args
, &res
->seq_res
, 1);
3160 static void nfs4_proc_unlink_rpc_prepare(struct rpc_task
*task
, struct nfs_unlinkdata
*data
)
3162 nfs4_setup_sequence(NFS_SERVER(data
->dir
),
3163 &data
->args
.seq_args
,
3168 static int nfs4_proc_unlink_done(struct rpc_task
*task
, struct inode
*dir
)
3170 struct nfs_removeres
*res
= task
->tk_msg
.rpc_resp
;
3172 if (!nfs4_sequence_done(task
, &res
->seq_res
))
3174 if (nfs4_async_handle_error(task
, res
->server
, NULL
) == -EAGAIN
)
3176 update_changeattr(dir
, &res
->cinfo
);
3180 static void nfs4_proc_rename_setup(struct rpc_message
*msg
, struct inode
*dir
)
3182 struct nfs_server
*server
= NFS_SERVER(dir
);
3183 struct nfs_renameargs
*arg
= msg
->rpc_argp
;
3184 struct nfs_renameres
*res
= msg
->rpc_resp
;
3186 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENAME
];
3187 res
->server
= server
;
3188 nfs41_init_sequence(&arg
->seq_args
, &res
->seq_res
, 1);
3191 static void nfs4_proc_rename_rpc_prepare(struct rpc_task
*task
, struct nfs_renamedata
*data
)
3193 nfs4_setup_sequence(NFS_SERVER(data
->old_dir
),
3194 &data
->args
.seq_args
,
3199 static int nfs4_proc_rename_done(struct rpc_task
*task
, struct inode
*old_dir
,
3200 struct inode
*new_dir
)
3202 struct nfs_renameres
*res
= task
->tk_msg
.rpc_resp
;
3204 if (!nfs4_sequence_done(task
, &res
->seq_res
))
3206 if (nfs4_async_handle_error(task
, res
->server
, NULL
) == -EAGAIN
)
3209 update_changeattr(old_dir
, &res
->old_cinfo
);
3210 update_changeattr(new_dir
, &res
->new_cinfo
);
3214 static int _nfs4_proc_rename(struct inode
*old_dir
, struct qstr
*old_name
,
3215 struct inode
*new_dir
, struct qstr
*new_name
)
3217 struct nfs_server
*server
= NFS_SERVER(old_dir
);
3218 struct nfs_renameargs arg
= {
3219 .old_dir
= NFS_FH(old_dir
),
3220 .new_dir
= NFS_FH(new_dir
),
3221 .old_name
= old_name
,
3222 .new_name
= new_name
,
3224 struct nfs_renameres res
= {
3227 struct rpc_message msg
= {
3228 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENAME
],
3232 int status
= -ENOMEM
;
3234 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
3236 update_changeattr(old_dir
, &res
.old_cinfo
);
3237 update_changeattr(new_dir
, &res
.new_cinfo
);
3242 static int nfs4_proc_rename(struct inode
*old_dir
, struct qstr
*old_name
,
3243 struct inode
*new_dir
, struct qstr
*new_name
)
3245 struct nfs4_exception exception
= { };
3248 err
= nfs4_handle_exception(NFS_SERVER(old_dir
),
3249 _nfs4_proc_rename(old_dir
, old_name
,
3252 } while (exception
.retry
);
3256 static int _nfs4_proc_link(struct inode
*inode
, struct inode
*dir
, struct qstr
*name
)
3258 struct nfs_server
*server
= NFS_SERVER(inode
);
3259 struct nfs4_link_arg arg
= {
3260 .fh
= NFS_FH(inode
),
3261 .dir_fh
= NFS_FH(dir
),
3263 .bitmask
= server
->attr_bitmask
,
3265 struct nfs4_link_res res
= {
3269 struct rpc_message msg
= {
3270 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LINK
],
3274 int status
= -ENOMEM
;
3276 res
.fattr
= nfs_alloc_fattr();
3277 if (res
.fattr
== NULL
)
3280 res
.label
= nfs4_label_alloc(server
, GFP_KERNEL
);
3281 if (IS_ERR(res
.label
)) {
3282 status
= PTR_ERR(res
.label
);
3286 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
3288 update_changeattr(dir
, &res
.cinfo
);
3289 nfs_post_op_update_inode(inode
, res
.fattr
);
3293 nfs4_label_free(res
.label
);
3296 nfs_free_fattr(res
.fattr
);
3300 static int nfs4_proc_link(struct inode
*inode
, struct inode
*dir
, struct qstr
*name
)
3302 struct nfs4_exception exception
= { };
3305 err
= nfs4_handle_exception(NFS_SERVER(inode
),
3306 _nfs4_proc_link(inode
, dir
, name
),
3308 } while (exception
.retry
);
3312 struct nfs4_createdata
{
3313 struct rpc_message msg
;
3314 struct nfs4_create_arg arg
;
3315 struct nfs4_create_res res
;
3317 struct nfs_fattr fattr
;
3318 struct nfs4_label
*label
;
3321 static struct nfs4_createdata
*nfs4_alloc_createdata(struct inode
*dir
,
3322 struct qstr
*name
, struct iattr
*sattr
, u32 ftype
)
3324 struct nfs4_createdata
*data
;
3326 data
= kzalloc(sizeof(*data
), GFP_KERNEL
);
3328 struct nfs_server
*server
= NFS_SERVER(dir
);
3330 data
->label
= nfs4_label_alloc(server
, GFP_KERNEL
);
3331 if (IS_ERR(data
->label
))
3334 data
->msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CREATE
];
3335 data
->msg
.rpc_argp
= &data
->arg
;
3336 data
->msg
.rpc_resp
= &data
->res
;
3337 data
->arg
.dir_fh
= NFS_FH(dir
);
3338 data
->arg
.server
= server
;
3339 data
->arg
.name
= name
;
3340 data
->arg
.attrs
= sattr
;
3341 data
->arg
.ftype
= ftype
;
3342 data
->arg
.bitmask
= server
->attr_bitmask
;
3343 data
->res
.server
= server
;
3344 data
->res
.fh
= &data
->fh
;
3345 data
->res
.fattr
= &data
->fattr
;
3346 data
->res
.label
= data
->label
;
3347 nfs_fattr_init(data
->res
.fattr
);
3355 static int nfs4_do_create(struct inode
*dir
, struct dentry
*dentry
, struct nfs4_createdata
*data
)
3357 int status
= nfs4_call_sync(NFS_SERVER(dir
)->client
, NFS_SERVER(dir
), &data
->msg
,
3358 &data
->arg
.seq_args
, &data
->res
.seq_res
, 1);
3360 update_changeattr(dir
, &data
->res
.dir_cinfo
);
3361 status
= nfs_instantiate(dentry
, data
->res
.fh
, data
->res
.fattr
, data
->res
.label
);
3366 static void nfs4_free_createdata(struct nfs4_createdata
*data
)
3368 nfs4_label_free(data
->label
);
3372 static int _nfs4_proc_symlink(struct inode
*dir
, struct dentry
*dentry
,
3373 struct page
*page
, unsigned int len
, struct iattr
*sattr
,
3374 struct nfs4_label
*label
)
3376 struct nfs4_createdata
*data
;
3377 int status
= -ENAMETOOLONG
;
3379 if (len
> NFS4_MAXPATHLEN
)
3383 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4LNK
);
3387 data
->msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SYMLINK
];
3388 data
->arg
.u
.symlink
.pages
= &page
;
3389 data
->arg
.u
.symlink
.len
= len
;
3390 data
->arg
.label
= label
;
3392 status
= nfs4_do_create(dir
, dentry
, data
);
3394 nfs4_free_createdata(data
);
3399 static int nfs4_proc_symlink(struct inode
*dir
, struct dentry
*dentry
,
3400 struct page
*page
, unsigned int len
, struct iattr
*sattr
)
3402 struct nfs4_exception exception
= { };
3403 struct nfs4_label
*label
= NULL
;
3406 err
= nfs4_handle_exception(NFS_SERVER(dir
),
3407 _nfs4_proc_symlink(dir
, dentry
, page
,
3410 } while (exception
.retry
);
3414 static int _nfs4_proc_mkdir(struct inode
*dir
, struct dentry
*dentry
,
3415 struct iattr
*sattr
, struct nfs4_label
*label
)
3417 struct nfs4_createdata
*data
;
3418 int status
= -ENOMEM
;
3420 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4DIR
);
3424 data
->arg
.label
= label
;
3425 status
= nfs4_do_create(dir
, dentry
, data
);
3427 nfs4_free_createdata(data
);
3432 static int nfs4_proc_mkdir(struct inode
*dir
, struct dentry
*dentry
,
3433 struct iattr
*sattr
)
3435 struct nfs4_exception exception
= { };
3436 struct nfs4_label
*label
= NULL
;
3439 sattr
->ia_mode
&= ~current_umask();
3441 err
= nfs4_handle_exception(NFS_SERVER(dir
),
3442 _nfs4_proc_mkdir(dir
, dentry
, sattr
, label
),
3444 } while (exception
.retry
);
3448 static int _nfs4_proc_readdir(struct dentry
*dentry
, struct rpc_cred
*cred
,
3449 u64 cookie
, struct page
**pages
, unsigned int count
, int plus
)
3451 struct inode
*dir
= dentry
->d_inode
;
3452 struct nfs4_readdir_arg args
= {
3457 .bitmask
= NFS_SERVER(dentry
->d_inode
)->attr_bitmask
,
3460 struct nfs4_readdir_res res
;
3461 struct rpc_message msg
= {
3462 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READDIR
],
3469 dprintk("%s: dentry = %s/%s, cookie = %Lu\n", __func__
,
3470 dentry
->d_parent
->d_name
.name
,
3471 dentry
->d_name
.name
,
3472 (unsigned long long)cookie
);
3473 nfs4_setup_readdir(cookie
, NFS_I(dir
)->cookieverf
, dentry
, &args
);
3474 res
.pgbase
= args
.pgbase
;
3475 status
= nfs4_call_sync(NFS_SERVER(dir
)->client
, NFS_SERVER(dir
), &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3477 memcpy(NFS_I(dir
)->cookieverf
, res
.verifier
.data
, NFS4_VERIFIER_SIZE
);
3478 status
+= args
.pgbase
;
3481 nfs_invalidate_atime(dir
);
3483 dprintk("%s: returns %d\n", __func__
, status
);
3487 static int nfs4_proc_readdir(struct dentry
*dentry
, struct rpc_cred
*cred
,
3488 u64 cookie
, struct page
**pages
, unsigned int count
, int plus
)
3490 struct nfs4_exception exception
= { };
3493 err
= nfs4_handle_exception(NFS_SERVER(dentry
->d_inode
),
3494 _nfs4_proc_readdir(dentry
, cred
, cookie
,
3495 pages
, count
, plus
),
3497 } while (exception
.retry
);
3501 static int _nfs4_proc_mknod(struct inode
*dir
, struct dentry
*dentry
,
3502 struct iattr
*sattr
, dev_t rdev
)
3504 struct nfs4_createdata
*data
;
3505 int mode
= sattr
->ia_mode
;
3506 int status
= -ENOMEM
;
3508 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4SOCK
);
3513 data
->arg
.ftype
= NF4FIFO
;
3514 else if (S_ISBLK(mode
)) {
3515 data
->arg
.ftype
= NF4BLK
;
3516 data
->arg
.u
.device
.specdata1
= MAJOR(rdev
);
3517 data
->arg
.u
.device
.specdata2
= MINOR(rdev
);
3519 else if (S_ISCHR(mode
)) {
3520 data
->arg
.ftype
= NF4CHR
;
3521 data
->arg
.u
.device
.specdata1
= MAJOR(rdev
);
3522 data
->arg
.u
.device
.specdata2
= MINOR(rdev
);
3523 } else if (!S_ISSOCK(mode
)) {
3528 status
= nfs4_do_create(dir
, dentry
, data
);
3530 nfs4_free_createdata(data
);
3535 static int nfs4_proc_mknod(struct inode
*dir
, struct dentry
*dentry
,
3536 struct iattr
*sattr
, dev_t rdev
)
3538 struct nfs4_exception exception
= { };
3541 sattr
->ia_mode
&= ~current_umask();
3543 err
= nfs4_handle_exception(NFS_SERVER(dir
),
3544 _nfs4_proc_mknod(dir
, dentry
, sattr
, rdev
),
3546 } while (exception
.retry
);
3550 static int _nfs4_proc_statfs(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3551 struct nfs_fsstat
*fsstat
)
3553 struct nfs4_statfs_arg args
= {
3555 .bitmask
= server
->attr_bitmask
,
3557 struct nfs4_statfs_res res
= {
3560 struct rpc_message msg
= {
3561 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_STATFS
],
3566 nfs_fattr_init(fsstat
->fattr
);
3567 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3570 static int nfs4_proc_statfs(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsstat
*fsstat
)
3572 struct nfs4_exception exception
= { };
3575 err
= nfs4_handle_exception(server
,
3576 _nfs4_proc_statfs(server
, fhandle
, fsstat
),
3578 } while (exception
.retry
);
3582 static int _nfs4_do_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3583 struct nfs_fsinfo
*fsinfo
)
3585 struct nfs4_fsinfo_arg args
= {
3587 .bitmask
= server
->attr_bitmask
,
3589 struct nfs4_fsinfo_res res
= {
3592 struct rpc_message msg
= {
3593 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FSINFO
],
3598 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3601 static int nfs4_do_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsinfo
*fsinfo
)
3603 struct nfs4_exception exception
= { };
3604 unsigned long now
= jiffies
;
3608 err
= _nfs4_do_fsinfo(server
, fhandle
, fsinfo
);
3610 struct nfs_client
*clp
= server
->nfs_client
;
3612 spin_lock(&clp
->cl_lock
);
3613 clp
->cl_lease_time
= fsinfo
->lease_time
* HZ
;
3614 clp
->cl_last_renewal
= now
;
3615 spin_unlock(&clp
->cl_lock
);
3618 err
= nfs4_handle_exception(server
, err
, &exception
);
3619 } while (exception
.retry
);
3623 static int nfs4_proc_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsinfo
*fsinfo
)
3627 nfs_fattr_init(fsinfo
->fattr
);
3628 error
= nfs4_do_fsinfo(server
, fhandle
, fsinfo
);
3630 /* block layout checks this! */
3631 server
->pnfs_blksize
= fsinfo
->blksize
;
3632 set_pnfs_layoutdriver(server
, fhandle
, fsinfo
->layouttype
);
3638 static int _nfs4_proc_pathconf(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3639 struct nfs_pathconf
*pathconf
)
3641 struct nfs4_pathconf_arg args
= {
3643 .bitmask
= server
->attr_bitmask
,
3645 struct nfs4_pathconf_res res
= {
3646 .pathconf
= pathconf
,
3648 struct rpc_message msg
= {
3649 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_PATHCONF
],
3654 /* None of the pathconf attributes are mandatory to implement */
3655 if ((args
.bitmask
[0] & nfs4_pathconf_bitmap
[0]) == 0) {
3656 memset(pathconf
, 0, sizeof(*pathconf
));
3660 nfs_fattr_init(pathconf
->fattr
);
3661 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3664 static int nfs4_proc_pathconf(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3665 struct nfs_pathconf
*pathconf
)
3667 struct nfs4_exception exception
= { };
3671 err
= nfs4_handle_exception(server
,
3672 _nfs4_proc_pathconf(server
, fhandle
, pathconf
),
3674 } while (exception
.retry
);
3678 int nfs4_set_rw_stateid(nfs4_stateid
*stateid
,
3679 const struct nfs_open_context
*ctx
,
3680 const struct nfs_lock_context
*l_ctx
,
3683 const struct nfs_lockowner
*lockowner
= NULL
;
3686 lockowner
= &l_ctx
->lockowner
;
3687 return nfs4_select_rw_stateid(stateid
, ctx
->state
, fmode
, lockowner
);
3689 EXPORT_SYMBOL_GPL(nfs4_set_rw_stateid
);
3691 static bool nfs4_stateid_is_current(nfs4_stateid
*stateid
,
3692 const struct nfs_open_context
*ctx
,
3693 const struct nfs_lock_context
*l_ctx
,
3696 nfs4_stateid current_stateid
;
3698 if (nfs4_set_rw_stateid(¤t_stateid
, ctx
, l_ctx
, fmode
))
3700 return nfs4_stateid_match(stateid
, ¤t_stateid
);
3703 static bool nfs4_error_stateid_expired(int err
)
3706 case -NFS4ERR_DELEG_REVOKED
:
3707 case -NFS4ERR_ADMIN_REVOKED
:
3708 case -NFS4ERR_BAD_STATEID
:
3709 case -NFS4ERR_STALE_STATEID
:
3710 case -NFS4ERR_OLD_STATEID
:
3711 case -NFS4ERR_OPENMODE
:
3712 case -NFS4ERR_EXPIRED
:
3718 void __nfs4_read_done_cb(struct nfs_read_data
*data
)
3720 nfs_invalidate_atime(data
->header
->inode
);
3723 static int nfs4_read_done_cb(struct rpc_task
*task
, struct nfs_read_data
*data
)
3725 struct nfs_server
*server
= NFS_SERVER(data
->header
->inode
);
3727 if (nfs4_async_handle_error(task
, server
, data
->args
.context
->state
) == -EAGAIN
) {
3728 rpc_restart_call_prepare(task
);
3732 __nfs4_read_done_cb(data
);
3733 if (task
->tk_status
> 0)
3734 renew_lease(server
, data
->timestamp
);
3738 static bool nfs4_read_stateid_changed(struct rpc_task
*task
,
3739 struct nfs_readargs
*args
)
3742 if (!nfs4_error_stateid_expired(task
->tk_status
) ||
3743 nfs4_stateid_is_current(&args
->stateid
,
3748 rpc_restart_call_prepare(task
);
3752 static int nfs4_read_done(struct rpc_task
*task
, struct nfs_read_data
*data
)
3755 dprintk("--> %s\n", __func__
);
3757 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
3759 if (nfs4_read_stateid_changed(task
, &data
->args
))
3761 return data
->read_done_cb
? data
->read_done_cb(task
, data
) :
3762 nfs4_read_done_cb(task
, data
);
3765 static void nfs4_proc_read_setup(struct nfs_read_data
*data
, struct rpc_message
*msg
)
3767 data
->timestamp
= jiffies
;
3768 data
->read_done_cb
= nfs4_read_done_cb
;
3769 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READ
];
3770 nfs41_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 0);
3773 static void nfs4_proc_read_rpc_prepare(struct rpc_task
*task
, struct nfs_read_data
*data
)
3775 if (nfs4_setup_sequence(NFS_SERVER(data
->header
->inode
),
3776 &data
->args
.seq_args
,
3780 nfs4_set_rw_stateid(&data
->args
.stateid
, data
->args
.context
,
3781 data
->args
.lock_context
, FMODE_READ
);
3784 static int nfs4_write_done_cb(struct rpc_task
*task
, struct nfs_write_data
*data
)
3786 struct inode
*inode
= data
->header
->inode
;
3788 if (nfs4_async_handle_error(task
, NFS_SERVER(inode
), data
->args
.context
->state
) == -EAGAIN
) {
3789 rpc_restart_call_prepare(task
);
3792 if (task
->tk_status
>= 0) {
3793 renew_lease(NFS_SERVER(inode
), data
->timestamp
);
3794 nfs_post_op_update_inode_force_wcc(inode
, &data
->fattr
);
3799 static bool nfs4_write_stateid_changed(struct rpc_task
*task
,
3800 struct nfs_writeargs
*args
)
3803 if (!nfs4_error_stateid_expired(task
->tk_status
) ||
3804 nfs4_stateid_is_current(&args
->stateid
,
3809 rpc_restart_call_prepare(task
);
3813 static int nfs4_write_done(struct rpc_task
*task
, struct nfs_write_data
*data
)
3815 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
3817 if (nfs4_write_stateid_changed(task
, &data
->args
))
3819 return data
->write_done_cb
? data
->write_done_cb(task
, data
) :
3820 nfs4_write_done_cb(task
, data
);
3824 bool nfs4_write_need_cache_consistency_data(const struct nfs_write_data
*data
)
3826 const struct nfs_pgio_header
*hdr
= data
->header
;
3828 /* Don't request attributes for pNFS or O_DIRECT writes */
3829 if (data
->ds_clp
!= NULL
|| hdr
->dreq
!= NULL
)
3831 /* Otherwise, request attributes if and only if we don't hold
3834 return nfs4_have_delegation(hdr
->inode
, FMODE_READ
) == 0;
3837 static void nfs4_proc_write_setup(struct nfs_write_data
*data
, struct rpc_message
*msg
)
3839 struct nfs_server
*server
= NFS_SERVER(data
->header
->inode
);
3841 if (!nfs4_write_need_cache_consistency_data(data
)) {
3842 data
->args
.bitmask
= NULL
;
3843 data
->res
.fattr
= NULL
;
3845 data
->args
.bitmask
= server
->cache_consistency_bitmask
;
3847 if (!data
->write_done_cb
)
3848 data
->write_done_cb
= nfs4_write_done_cb
;
3849 data
->res
.server
= server
;
3850 data
->timestamp
= jiffies
;
3852 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_WRITE
];
3853 nfs41_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
3856 static void nfs4_proc_write_rpc_prepare(struct rpc_task
*task
, struct nfs_write_data
*data
)
3858 if (nfs4_setup_sequence(NFS_SERVER(data
->header
->inode
),
3859 &data
->args
.seq_args
,
3863 nfs4_set_rw_stateid(&data
->args
.stateid
, data
->args
.context
,
3864 data
->args
.lock_context
, FMODE_WRITE
);
3867 static void nfs4_proc_commit_rpc_prepare(struct rpc_task
*task
, struct nfs_commit_data
*data
)
3869 nfs4_setup_sequence(NFS_SERVER(data
->inode
),
3870 &data
->args
.seq_args
,
3875 static int nfs4_commit_done_cb(struct rpc_task
*task
, struct nfs_commit_data
*data
)
3877 struct inode
*inode
= data
->inode
;
3879 if (nfs4_async_handle_error(task
, NFS_SERVER(inode
), NULL
) == -EAGAIN
) {
3880 rpc_restart_call_prepare(task
);
3886 static int nfs4_commit_done(struct rpc_task
*task
, struct nfs_commit_data
*data
)
3888 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
3890 return data
->commit_done_cb(task
, data
);
3893 static void nfs4_proc_commit_setup(struct nfs_commit_data
*data
, struct rpc_message
*msg
)
3895 struct nfs_server
*server
= NFS_SERVER(data
->inode
);
3897 if (data
->commit_done_cb
== NULL
)
3898 data
->commit_done_cb
= nfs4_commit_done_cb
;
3899 data
->res
.server
= server
;
3900 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_COMMIT
];
3901 nfs41_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
3904 struct nfs4_renewdata
{
3905 struct nfs_client
*client
;
3906 unsigned long timestamp
;
3910 * nfs4_proc_async_renew(): This is not one of the nfs_rpc_ops; it is a special
3911 * standalone procedure for queueing an asynchronous RENEW.
3913 static void nfs4_renew_release(void *calldata
)
3915 struct nfs4_renewdata
*data
= calldata
;
3916 struct nfs_client
*clp
= data
->client
;
3918 if (atomic_read(&clp
->cl_count
) > 1)
3919 nfs4_schedule_state_renewal(clp
);
3920 nfs_put_client(clp
);
3924 static void nfs4_renew_done(struct rpc_task
*task
, void *calldata
)
3926 struct nfs4_renewdata
*data
= calldata
;
3927 struct nfs_client
*clp
= data
->client
;
3928 unsigned long timestamp
= data
->timestamp
;
3930 if (task
->tk_status
< 0) {
3931 /* Unless we're shutting down, schedule state recovery! */
3932 if (test_bit(NFS_CS_RENEWD
, &clp
->cl_res_state
) == 0)
3934 if (task
->tk_status
!= NFS4ERR_CB_PATH_DOWN
) {
3935 nfs4_schedule_lease_recovery(clp
);
3938 nfs4_schedule_path_down_recovery(clp
);
3940 do_renew_lease(clp
, timestamp
);
3943 static const struct rpc_call_ops nfs4_renew_ops
= {
3944 .rpc_call_done
= nfs4_renew_done
,
3945 .rpc_release
= nfs4_renew_release
,
3948 static int nfs4_proc_async_renew(struct nfs_client
*clp
, struct rpc_cred
*cred
, unsigned renew_flags
)
3950 struct rpc_message msg
= {
3951 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENEW
],
3955 struct nfs4_renewdata
*data
;
3957 if (renew_flags
== 0)
3959 if (!atomic_inc_not_zero(&clp
->cl_count
))
3961 data
= kmalloc(sizeof(*data
), GFP_NOFS
);
3965 data
->timestamp
= jiffies
;
3966 return rpc_call_async(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
,
3967 &nfs4_renew_ops
, data
);
3970 static int nfs4_proc_renew(struct nfs_client
*clp
, struct rpc_cred
*cred
)
3972 struct rpc_message msg
= {
3973 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENEW
],
3977 unsigned long now
= jiffies
;
3980 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
3983 do_renew_lease(clp
, now
);
3987 static inline int nfs4_server_supports_acls(struct nfs_server
*server
)
3989 return (server
->caps
& NFS_CAP_ACLS
)
3990 && (server
->acl_bitmask
& ACL4_SUPPORT_ALLOW_ACL
)
3991 && (server
->acl_bitmask
& ACL4_SUPPORT_DENY_ACL
);
3994 /* Assuming that XATTR_SIZE_MAX is a multiple of PAGE_SIZE, and that
3995 * it's OK to put sizeof(void) * (XATTR_SIZE_MAX/PAGE_SIZE) bytes on
3998 #define NFS4ACL_MAXPAGES DIV_ROUND_UP(XATTR_SIZE_MAX, PAGE_SIZE)
4000 static int buf_to_pages_noslab(const void *buf
, size_t buflen
,
4001 struct page
**pages
, unsigned int *pgbase
)
4003 struct page
*newpage
, **spages
;
4009 len
= min_t(size_t, PAGE_SIZE
, buflen
);
4010 newpage
= alloc_page(GFP_KERNEL
);
4012 if (newpage
== NULL
)
4014 memcpy(page_address(newpage
), buf
, len
);
4019 } while (buflen
!= 0);
4025 __free_page(spages
[rc
-1]);
4029 struct nfs4_cached_acl
{
4035 static void nfs4_set_cached_acl(struct inode
*inode
, struct nfs4_cached_acl
*acl
)
4037 struct nfs_inode
*nfsi
= NFS_I(inode
);
4039 spin_lock(&inode
->i_lock
);
4040 kfree(nfsi
->nfs4_acl
);
4041 nfsi
->nfs4_acl
= acl
;
4042 spin_unlock(&inode
->i_lock
);
4045 static void nfs4_zap_acl_attr(struct inode
*inode
)
4047 nfs4_set_cached_acl(inode
, NULL
);
4050 static inline ssize_t
nfs4_read_cached_acl(struct inode
*inode
, char *buf
, size_t buflen
)
4052 struct nfs_inode
*nfsi
= NFS_I(inode
);
4053 struct nfs4_cached_acl
*acl
;
4056 spin_lock(&inode
->i_lock
);
4057 acl
= nfsi
->nfs4_acl
;
4060 if (buf
== NULL
) /* user is just asking for length */
4062 if (acl
->cached
== 0)
4064 ret
= -ERANGE
; /* see getxattr(2) man page */
4065 if (acl
->len
> buflen
)
4067 memcpy(buf
, acl
->data
, acl
->len
);
4071 spin_unlock(&inode
->i_lock
);
4075 static void nfs4_write_cached_acl(struct inode
*inode
, struct page
**pages
, size_t pgbase
, size_t acl_len
)
4077 struct nfs4_cached_acl
*acl
;
4078 size_t buflen
= sizeof(*acl
) + acl_len
;
4080 if (buflen
<= PAGE_SIZE
) {
4081 acl
= kmalloc(buflen
, GFP_KERNEL
);
4085 _copy_from_pages(acl
->data
, pages
, pgbase
, acl_len
);
4087 acl
= kmalloc(sizeof(*acl
), GFP_KERNEL
);
4094 nfs4_set_cached_acl(inode
, acl
);
4098 * The getxattr API returns the required buffer length when called with a
4099 * NULL buf. The NFSv4 acl tool then calls getxattr again after allocating
4100 * the required buf. On a NULL buf, we send a page of data to the server
4101 * guessing that the ACL request can be serviced by a page. If so, we cache
4102 * up to the page of ACL data, and the 2nd call to getxattr is serviced by
4103 * the cache. If not so, we throw away the page, and cache the required
4104 * length. The next getxattr call will then produce another round trip to
4105 * the server, this time with the input buf of the required size.
4107 static ssize_t
__nfs4_get_acl_uncached(struct inode
*inode
, void *buf
, size_t buflen
)
4109 struct page
*pages
[NFS4ACL_MAXPAGES
] = {NULL
, };
4110 struct nfs_getaclargs args
= {
4111 .fh
= NFS_FH(inode
),
4115 struct nfs_getaclres res
= {
4118 struct rpc_message msg
= {
4119 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETACL
],
4123 unsigned int npages
= DIV_ROUND_UP(buflen
, PAGE_SIZE
);
4124 int ret
= -ENOMEM
, i
;
4126 /* As long as we're doing a round trip to the server anyway,
4127 * let's be prepared for a page of acl data. */
4130 if (npages
> ARRAY_SIZE(pages
))
4133 for (i
= 0; i
< npages
; i
++) {
4134 pages
[i
] = alloc_page(GFP_KERNEL
);
4139 /* for decoding across pages */
4140 res
.acl_scratch
= alloc_page(GFP_KERNEL
);
4141 if (!res
.acl_scratch
)
4144 args
.acl_len
= npages
* PAGE_SIZE
;
4145 args
.acl_pgbase
= 0;
4147 dprintk("%s buf %p buflen %zu npages %d args.acl_len %zu\n",
4148 __func__
, buf
, buflen
, npages
, args
.acl_len
);
4149 ret
= nfs4_call_sync(NFS_SERVER(inode
)->client
, NFS_SERVER(inode
),
4150 &msg
, &args
.seq_args
, &res
.seq_res
, 0);
4154 /* Handle the case where the passed-in buffer is too short */
4155 if (res
.acl_flags
& NFS4_ACL_TRUNC
) {
4156 /* Did the user only issue a request for the acl length? */
4162 nfs4_write_cached_acl(inode
, pages
, res
.acl_data_offset
, res
.acl_len
);
4164 if (res
.acl_len
> buflen
) {
4168 _copy_from_pages(buf
, pages
, res
.acl_data_offset
, res
.acl_len
);
4173 for (i
= 0; i
< npages
; i
++)
4175 __free_page(pages
[i
]);
4176 if (res
.acl_scratch
)
4177 __free_page(res
.acl_scratch
);
4181 static ssize_t
nfs4_get_acl_uncached(struct inode
*inode
, void *buf
, size_t buflen
)
4183 struct nfs4_exception exception
= { };
4186 ret
= __nfs4_get_acl_uncached(inode
, buf
, buflen
);
4189 ret
= nfs4_handle_exception(NFS_SERVER(inode
), ret
, &exception
);
4190 } while (exception
.retry
);
4194 static ssize_t
nfs4_proc_get_acl(struct inode
*inode
, void *buf
, size_t buflen
)
4196 struct nfs_server
*server
= NFS_SERVER(inode
);
4199 if (!nfs4_server_supports_acls(server
))
4201 ret
= nfs_revalidate_inode(server
, inode
);
4204 if (NFS_I(inode
)->cache_validity
& NFS_INO_INVALID_ACL
)
4205 nfs_zap_acl_cache(inode
);
4206 ret
= nfs4_read_cached_acl(inode
, buf
, buflen
);
4208 /* -ENOENT is returned if there is no ACL or if there is an ACL
4209 * but no cached acl data, just the acl length */
4211 return nfs4_get_acl_uncached(inode
, buf
, buflen
);
4214 static int __nfs4_proc_set_acl(struct inode
*inode
, const void *buf
, size_t buflen
)
4216 struct nfs_server
*server
= NFS_SERVER(inode
);
4217 struct page
*pages
[NFS4ACL_MAXPAGES
];
4218 struct nfs_setaclargs arg
= {
4219 .fh
= NFS_FH(inode
),
4223 struct nfs_setaclres res
;
4224 struct rpc_message msg
= {
4225 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETACL
],
4229 unsigned int npages
= DIV_ROUND_UP(buflen
, PAGE_SIZE
);
4232 if (!nfs4_server_supports_acls(server
))
4234 if (npages
> ARRAY_SIZE(pages
))
4236 i
= buf_to_pages_noslab(buf
, buflen
, arg
.acl_pages
, &arg
.acl_pgbase
);
4239 nfs4_inode_return_delegation(inode
);
4240 ret
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
4243 * Free each page after tx, so the only ref left is
4244 * held by the network stack
4247 put_page(pages
[i
-1]);
4250 * Acl update can result in inode attribute update.
4251 * so mark the attribute cache invalid.
4253 spin_lock(&inode
->i_lock
);
4254 NFS_I(inode
)->cache_validity
|= NFS_INO_INVALID_ATTR
;
4255 spin_unlock(&inode
->i_lock
);
4256 nfs_access_zap_cache(inode
);
4257 nfs_zap_acl_cache(inode
);
4261 static int nfs4_proc_set_acl(struct inode
*inode
, const void *buf
, size_t buflen
)
4263 struct nfs4_exception exception
= { };
4266 err
= nfs4_handle_exception(NFS_SERVER(inode
),
4267 __nfs4_proc_set_acl(inode
, buf
, buflen
),
4269 } while (exception
.retry
);
4274 nfs4_async_handle_error(struct rpc_task
*task
, const struct nfs_server
*server
, struct nfs4_state
*state
)
4276 struct nfs_client
*clp
= server
->nfs_client
;
4278 if (task
->tk_status
>= 0)
4280 switch(task
->tk_status
) {
4281 case -NFS4ERR_DELEG_REVOKED
:
4282 case -NFS4ERR_ADMIN_REVOKED
:
4283 case -NFS4ERR_BAD_STATEID
:
4286 nfs_remove_bad_delegation(state
->inode
);
4287 case -NFS4ERR_OPENMODE
:
4290 if (nfs4_schedule_stateid_recovery(server
, state
) < 0)
4291 goto stateid_invalid
;
4292 goto wait_on_recovery
;
4293 case -NFS4ERR_EXPIRED
:
4294 if (state
!= NULL
) {
4295 if (nfs4_schedule_stateid_recovery(server
, state
) < 0)
4296 goto stateid_invalid
;
4298 case -NFS4ERR_STALE_STATEID
:
4299 case -NFS4ERR_STALE_CLIENTID
:
4300 nfs4_schedule_lease_recovery(clp
);
4301 goto wait_on_recovery
;
4302 #if defined(CONFIG_NFS_V4_1)
4303 case -NFS4ERR_BADSESSION
:
4304 case -NFS4ERR_BADSLOT
:
4305 case -NFS4ERR_BAD_HIGH_SLOT
:
4306 case -NFS4ERR_DEADSESSION
:
4307 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
4308 case -NFS4ERR_SEQ_FALSE_RETRY
:
4309 case -NFS4ERR_SEQ_MISORDERED
:
4310 dprintk("%s ERROR %d, Reset session\n", __func__
,
4312 nfs4_schedule_session_recovery(clp
->cl_session
, task
->tk_status
);
4313 task
->tk_status
= 0;
4315 #endif /* CONFIG_NFS_V4_1 */
4316 case -NFS4ERR_DELAY
:
4317 nfs_inc_server_stats(server
, NFSIOS_DELAY
);
4318 case -NFS4ERR_GRACE
:
4319 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
4320 task
->tk_status
= 0;
4322 case -NFS4ERR_RETRY_UNCACHED_REP
:
4323 case -NFS4ERR_OLD_STATEID
:
4324 task
->tk_status
= 0;
4327 task
->tk_status
= nfs4_map_errors(task
->tk_status
);
4330 task
->tk_status
= -EIO
;
4333 rpc_sleep_on(&clp
->cl_rpcwaitq
, task
, NULL
);
4334 if (test_bit(NFS4CLNT_MANAGER_RUNNING
, &clp
->cl_state
) == 0)
4335 rpc_wake_up_queued_task(&clp
->cl_rpcwaitq
, task
);
4336 task
->tk_status
= 0;
4340 static void nfs4_init_boot_verifier(const struct nfs_client
*clp
,
4341 nfs4_verifier
*bootverf
)
4345 if (test_bit(NFS4CLNT_PURGE_STATE
, &clp
->cl_state
)) {
4346 /* An impossible timestamp guarantees this value
4347 * will never match a generated boot time. */
4349 verf
[1] = (__be32
)(NSEC_PER_SEC
+ 1);
4351 struct nfs_net
*nn
= net_generic(clp
->cl_net
, nfs_net_id
);
4352 verf
[0] = (__be32
)nn
->boot_time
.tv_sec
;
4353 verf
[1] = (__be32
)nn
->boot_time
.tv_nsec
;
4355 memcpy(bootverf
->data
, verf
, sizeof(bootverf
->data
));
4359 nfs4_init_nonuniform_client_string(const struct nfs_client
*clp
,
4360 char *buf
, size_t len
)
4362 unsigned int result
;
4365 result
= scnprintf(buf
, len
, "Linux NFSv4.0 %s/%s %s",
4367 rpc_peeraddr2str(clp
->cl_rpcclient
,
4369 rpc_peeraddr2str(clp
->cl_rpcclient
,
4370 RPC_DISPLAY_PROTO
));
4376 nfs4_init_uniform_client_string(const struct nfs_client
*clp
,
4377 char *buf
, size_t len
)
4379 char *nodename
= clp
->cl_rpcclient
->cl_nodename
;
4381 if (nfs4_client_id_uniquifier
[0] != '\0')
4382 nodename
= nfs4_client_id_uniquifier
;
4383 return scnprintf(buf
, len
, "Linux NFSv%u.%u %s",
4384 clp
->rpc_ops
->version
, clp
->cl_minorversion
,
4389 * nfs4_proc_setclientid - Negotiate client ID
4390 * @clp: state data structure
4391 * @program: RPC program for NFSv4 callback service
4392 * @port: IP port number for NFS4 callback service
4393 * @cred: RPC credential to use for this call
4394 * @res: where to place the result
4396 * Returns zero, a negative errno, or a negative NFS4ERR status code.
4398 int nfs4_proc_setclientid(struct nfs_client
*clp
, u32 program
,
4399 unsigned short port
, struct rpc_cred
*cred
,
4400 struct nfs4_setclientid_res
*res
)
4402 nfs4_verifier sc_verifier
;
4403 struct nfs4_setclientid setclientid
= {
4404 .sc_verifier
= &sc_verifier
,
4406 .sc_cb_ident
= clp
->cl_cb_ident
,
4408 struct rpc_message msg
= {
4409 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETCLIENTID
],
4410 .rpc_argp
= &setclientid
,
4416 /* nfs_client_id4 */
4417 nfs4_init_boot_verifier(clp
, &sc_verifier
);
4418 if (test_bit(NFS_CS_MIGRATION
, &clp
->cl_flags
))
4419 setclientid
.sc_name_len
=
4420 nfs4_init_uniform_client_string(clp
,
4421 setclientid
.sc_name
,
4422 sizeof(setclientid
.sc_name
));
4424 setclientid
.sc_name_len
=
4425 nfs4_init_nonuniform_client_string(clp
,
4426 setclientid
.sc_name
,
4427 sizeof(setclientid
.sc_name
));
4430 setclientid
.sc_netid_len
= scnprintf(setclientid
.sc_netid
,
4431 sizeof(setclientid
.sc_netid
),
4432 rpc_peeraddr2str(clp
->cl_rpcclient
,
4433 RPC_DISPLAY_NETID
));
4435 setclientid
.sc_uaddr_len
= scnprintf(setclientid
.sc_uaddr
,
4436 sizeof(setclientid
.sc_uaddr
), "%s.%u.%u",
4437 clp
->cl_ipaddr
, port
>> 8, port
& 255);
4439 dprintk("NFS call setclientid auth=%s, '%.*s'\n",
4440 clp
->cl_rpcclient
->cl_auth
->au_ops
->au_name
,
4441 setclientid
.sc_name_len
, setclientid
.sc_name
);
4442 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
4443 dprintk("NFS reply setclientid: %d\n", status
);
4448 * nfs4_proc_setclientid_confirm - Confirm client ID
4449 * @clp: state data structure
4450 * @res: result of a previous SETCLIENTID
4451 * @cred: RPC credential to use for this call
4453 * Returns zero, a negative errno, or a negative NFS4ERR status code.
4455 int nfs4_proc_setclientid_confirm(struct nfs_client
*clp
,
4456 struct nfs4_setclientid_res
*arg
,
4457 struct rpc_cred
*cred
)
4459 struct rpc_message msg
= {
4460 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETCLIENTID_CONFIRM
],
4466 dprintk("NFS call setclientid_confirm auth=%s, (client ID %llx)\n",
4467 clp
->cl_rpcclient
->cl_auth
->au_ops
->au_name
,
4469 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
4470 dprintk("NFS reply setclientid_confirm: %d\n", status
);
4474 struct nfs4_delegreturndata
{
4475 struct nfs4_delegreturnargs args
;
4476 struct nfs4_delegreturnres res
;
4478 nfs4_stateid stateid
;
4479 unsigned long timestamp
;
4480 struct nfs_fattr fattr
;
4484 static void nfs4_delegreturn_done(struct rpc_task
*task
, void *calldata
)
4486 struct nfs4_delegreturndata
*data
= calldata
;
4488 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
4491 switch (task
->tk_status
) {
4492 case -NFS4ERR_STALE_STATEID
:
4493 case -NFS4ERR_EXPIRED
:
4495 renew_lease(data
->res
.server
, data
->timestamp
);
4498 if (nfs4_async_handle_error(task
, data
->res
.server
, NULL
) ==
4500 rpc_restart_call_prepare(task
);
4504 data
->rpc_status
= task
->tk_status
;
4507 static void nfs4_delegreturn_release(void *calldata
)
4512 #if defined(CONFIG_NFS_V4_1)
4513 static void nfs4_delegreturn_prepare(struct rpc_task
*task
, void *data
)
4515 struct nfs4_delegreturndata
*d_data
;
4517 d_data
= (struct nfs4_delegreturndata
*)data
;
4519 nfs4_setup_sequence(d_data
->res
.server
,
4520 &d_data
->args
.seq_args
,
4521 &d_data
->res
.seq_res
,
4524 #endif /* CONFIG_NFS_V4_1 */
4526 static const struct rpc_call_ops nfs4_delegreturn_ops
= {
4527 #if defined(CONFIG_NFS_V4_1)
4528 .rpc_call_prepare
= nfs4_delegreturn_prepare
,
4529 #endif /* CONFIG_NFS_V4_1 */
4530 .rpc_call_done
= nfs4_delegreturn_done
,
4531 .rpc_release
= nfs4_delegreturn_release
,
4534 static int _nfs4_proc_delegreturn(struct inode
*inode
, struct rpc_cred
*cred
, const nfs4_stateid
*stateid
, int issync
)
4536 struct nfs4_delegreturndata
*data
;
4537 struct nfs_server
*server
= NFS_SERVER(inode
);
4538 struct rpc_task
*task
;
4539 struct rpc_message msg
= {
4540 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DELEGRETURN
],
4543 struct rpc_task_setup task_setup_data
= {
4544 .rpc_client
= server
->client
,
4545 .rpc_message
= &msg
,
4546 .callback_ops
= &nfs4_delegreturn_ops
,
4547 .flags
= RPC_TASK_ASYNC
,
4551 data
= kzalloc(sizeof(*data
), GFP_NOFS
);
4554 nfs41_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
4555 data
->args
.fhandle
= &data
->fh
;
4556 data
->args
.stateid
= &data
->stateid
;
4557 data
->args
.bitmask
= server
->cache_consistency_bitmask
;
4558 nfs_copy_fh(&data
->fh
, NFS_FH(inode
));
4559 nfs4_stateid_copy(&data
->stateid
, stateid
);
4560 data
->res
.fattr
= &data
->fattr
;
4561 data
->res
.server
= server
;
4562 nfs_fattr_init(data
->res
.fattr
);
4563 data
->timestamp
= jiffies
;
4564 data
->rpc_status
= 0;
4566 task_setup_data
.callback_data
= data
;
4567 msg
.rpc_argp
= &data
->args
;
4568 msg
.rpc_resp
= &data
->res
;
4569 task
= rpc_run_task(&task_setup_data
);
4571 return PTR_ERR(task
);
4574 status
= nfs4_wait_for_completion_rpc_task(task
);
4577 status
= data
->rpc_status
;
4579 nfs_post_op_update_inode_force_wcc(inode
, &data
->fattr
);
4581 nfs_refresh_inode(inode
, &data
->fattr
);
4587 int nfs4_proc_delegreturn(struct inode
*inode
, struct rpc_cred
*cred
, const nfs4_stateid
*stateid
, int issync
)
4589 struct nfs_server
*server
= NFS_SERVER(inode
);
4590 struct nfs4_exception exception
= { };
4593 err
= _nfs4_proc_delegreturn(inode
, cred
, stateid
, issync
);
4595 case -NFS4ERR_STALE_STATEID
:
4596 case -NFS4ERR_EXPIRED
:
4600 err
= nfs4_handle_exception(server
, err
, &exception
);
4601 } while (exception
.retry
);
4605 #define NFS4_LOCK_MINTIMEOUT (1 * HZ)
4606 #define NFS4_LOCK_MAXTIMEOUT (30 * HZ)
4609 * sleep, with exponential backoff, and retry the LOCK operation.
4611 static unsigned long
4612 nfs4_set_lock_task_retry(unsigned long timeout
)
4614 freezable_schedule_timeout_killable(timeout
);
4616 if (timeout
> NFS4_LOCK_MAXTIMEOUT
)
4617 return NFS4_LOCK_MAXTIMEOUT
;
4621 static int _nfs4_proc_getlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
4623 struct inode
*inode
= state
->inode
;
4624 struct nfs_server
*server
= NFS_SERVER(inode
);
4625 struct nfs_client
*clp
= server
->nfs_client
;
4626 struct nfs_lockt_args arg
= {
4627 .fh
= NFS_FH(inode
),
4630 struct nfs_lockt_res res
= {
4633 struct rpc_message msg
= {
4634 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCKT
],
4637 .rpc_cred
= state
->owner
->so_cred
,
4639 struct nfs4_lock_state
*lsp
;
4642 arg
.lock_owner
.clientid
= clp
->cl_clientid
;
4643 status
= nfs4_set_lock_state(state
, request
);
4646 lsp
= request
->fl_u
.nfs4_fl
.owner
;
4647 arg
.lock_owner
.id
= lsp
->ls_seqid
.owner_id
;
4648 arg
.lock_owner
.s_dev
= server
->s_dev
;
4649 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
4652 request
->fl_type
= F_UNLCK
;
4654 case -NFS4ERR_DENIED
:
4657 request
->fl_ops
->fl_release_private(request
);
4662 static int nfs4_proc_getlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
4664 struct nfs4_exception exception
= { };
4668 err
= nfs4_handle_exception(NFS_SERVER(state
->inode
),
4669 _nfs4_proc_getlk(state
, cmd
, request
),
4671 } while (exception
.retry
);
4675 static int do_vfs_lock(struct file
*file
, struct file_lock
*fl
)
4678 switch (fl
->fl_flags
& (FL_POSIX
|FL_FLOCK
)) {
4680 res
= posix_lock_file_wait(file
, fl
);
4683 res
= flock_lock_file_wait(file
, fl
);
4691 struct nfs4_unlockdata
{
4692 struct nfs_locku_args arg
;
4693 struct nfs_locku_res res
;
4694 struct nfs4_lock_state
*lsp
;
4695 struct nfs_open_context
*ctx
;
4696 struct file_lock fl
;
4697 const struct nfs_server
*server
;
4698 unsigned long timestamp
;
4701 static struct nfs4_unlockdata
*nfs4_alloc_unlockdata(struct file_lock
*fl
,
4702 struct nfs_open_context
*ctx
,
4703 struct nfs4_lock_state
*lsp
,
4704 struct nfs_seqid
*seqid
)
4706 struct nfs4_unlockdata
*p
;
4707 struct inode
*inode
= lsp
->ls_state
->inode
;
4709 p
= kzalloc(sizeof(*p
), GFP_NOFS
);
4712 p
->arg
.fh
= NFS_FH(inode
);
4714 p
->arg
.seqid
= seqid
;
4715 p
->res
.seqid
= seqid
;
4716 p
->arg
.stateid
= &lsp
->ls_stateid
;
4718 atomic_inc(&lsp
->ls_count
);
4719 /* Ensure we don't close file until we're done freeing locks! */
4720 p
->ctx
= get_nfs_open_context(ctx
);
4721 memcpy(&p
->fl
, fl
, sizeof(p
->fl
));
4722 p
->server
= NFS_SERVER(inode
);
4726 static void nfs4_locku_release_calldata(void *data
)
4728 struct nfs4_unlockdata
*calldata
= data
;
4729 nfs_free_seqid(calldata
->arg
.seqid
);
4730 nfs4_put_lock_state(calldata
->lsp
);
4731 put_nfs_open_context(calldata
->ctx
);
4735 static void nfs4_locku_done(struct rpc_task
*task
, void *data
)
4737 struct nfs4_unlockdata
*calldata
= data
;
4739 if (!nfs4_sequence_done(task
, &calldata
->res
.seq_res
))
4741 switch (task
->tk_status
) {
4743 nfs4_stateid_copy(&calldata
->lsp
->ls_stateid
,
4744 &calldata
->res
.stateid
);
4745 renew_lease(calldata
->server
, calldata
->timestamp
);
4747 case -NFS4ERR_BAD_STATEID
:
4748 case -NFS4ERR_OLD_STATEID
:
4749 case -NFS4ERR_STALE_STATEID
:
4750 case -NFS4ERR_EXPIRED
:
4753 if (nfs4_async_handle_error(task
, calldata
->server
, NULL
) == -EAGAIN
)
4754 rpc_restart_call_prepare(task
);
4756 nfs_release_seqid(calldata
->arg
.seqid
);
4759 static void nfs4_locku_prepare(struct rpc_task
*task
, void *data
)
4761 struct nfs4_unlockdata
*calldata
= data
;
4763 if (nfs_wait_on_sequence(calldata
->arg
.seqid
, task
) != 0)
4765 if (test_bit(NFS_LOCK_INITIALIZED
, &calldata
->lsp
->ls_flags
) == 0) {
4766 /* Note: exit _without_ running nfs4_locku_done */
4769 calldata
->timestamp
= jiffies
;
4770 if (nfs4_setup_sequence(calldata
->server
,
4771 &calldata
->arg
.seq_args
,
4772 &calldata
->res
.seq_res
,
4774 nfs_release_seqid(calldata
->arg
.seqid
);
4777 task
->tk_action
= NULL
;
4779 nfs4_sequence_done(task
, &calldata
->res
.seq_res
);
4782 static const struct rpc_call_ops nfs4_locku_ops
= {
4783 .rpc_call_prepare
= nfs4_locku_prepare
,
4784 .rpc_call_done
= nfs4_locku_done
,
4785 .rpc_release
= nfs4_locku_release_calldata
,
4788 static struct rpc_task
*nfs4_do_unlck(struct file_lock
*fl
,
4789 struct nfs_open_context
*ctx
,
4790 struct nfs4_lock_state
*lsp
,
4791 struct nfs_seqid
*seqid
)
4793 struct nfs4_unlockdata
*data
;
4794 struct rpc_message msg
= {
4795 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCKU
],
4796 .rpc_cred
= ctx
->cred
,
4798 struct rpc_task_setup task_setup_data
= {
4799 .rpc_client
= NFS_CLIENT(lsp
->ls_state
->inode
),
4800 .rpc_message
= &msg
,
4801 .callback_ops
= &nfs4_locku_ops
,
4802 .workqueue
= nfsiod_workqueue
,
4803 .flags
= RPC_TASK_ASYNC
,
4806 /* Ensure this is an unlock - when canceling a lock, the
4807 * canceled lock is passed in, and it won't be an unlock.
4809 fl
->fl_type
= F_UNLCK
;
4811 data
= nfs4_alloc_unlockdata(fl
, ctx
, lsp
, seqid
);
4813 nfs_free_seqid(seqid
);
4814 return ERR_PTR(-ENOMEM
);
4817 nfs41_init_sequence(&data
->arg
.seq_args
, &data
->res
.seq_res
, 1);
4818 msg
.rpc_argp
= &data
->arg
;
4819 msg
.rpc_resp
= &data
->res
;
4820 task_setup_data
.callback_data
= data
;
4821 return rpc_run_task(&task_setup_data
);
4824 static int nfs4_proc_unlck(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
4826 struct inode
*inode
= state
->inode
;
4827 struct nfs4_state_owner
*sp
= state
->owner
;
4828 struct nfs_inode
*nfsi
= NFS_I(inode
);
4829 struct nfs_seqid
*seqid
;
4830 struct nfs4_lock_state
*lsp
;
4831 struct rpc_task
*task
;
4833 unsigned char fl_flags
= request
->fl_flags
;
4835 status
= nfs4_set_lock_state(state
, request
);
4836 /* Unlock _before_ we do the RPC call */
4837 request
->fl_flags
|= FL_EXISTS
;
4838 /* Exclude nfs_delegation_claim_locks() */
4839 mutex_lock(&sp
->so_delegreturn_mutex
);
4840 /* Exclude nfs4_reclaim_open_stateid() - note nesting! */
4841 down_read(&nfsi
->rwsem
);
4842 if (do_vfs_lock(request
->fl_file
, request
) == -ENOENT
) {
4843 up_read(&nfsi
->rwsem
);
4844 mutex_unlock(&sp
->so_delegreturn_mutex
);
4847 up_read(&nfsi
->rwsem
);
4848 mutex_unlock(&sp
->so_delegreturn_mutex
);
4851 /* Is this a delegated lock? */
4852 lsp
= request
->fl_u
.nfs4_fl
.owner
;
4853 if (test_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
) == 0)
4855 seqid
= nfs_alloc_seqid(&lsp
->ls_seqid
, GFP_KERNEL
);
4859 task
= nfs4_do_unlck(request
, nfs_file_open_context(request
->fl_file
), lsp
, seqid
);
4860 status
= PTR_ERR(task
);
4863 status
= nfs4_wait_for_completion_rpc_task(task
);
4866 request
->fl_flags
= fl_flags
;
4870 struct nfs4_lockdata
{
4871 struct nfs_lock_args arg
;
4872 struct nfs_lock_res res
;
4873 struct nfs4_lock_state
*lsp
;
4874 struct nfs_open_context
*ctx
;
4875 struct file_lock fl
;
4876 unsigned long timestamp
;
4879 struct nfs_server
*server
;
4882 static struct nfs4_lockdata
*nfs4_alloc_lockdata(struct file_lock
*fl
,
4883 struct nfs_open_context
*ctx
, struct nfs4_lock_state
*lsp
,
4886 struct nfs4_lockdata
*p
;
4887 struct inode
*inode
= lsp
->ls_state
->inode
;
4888 struct nfs_server
*server
= NFS_SERVER(inode
);
4890 p
= kzalloc(sizeof(*p
), gfp_mask
);
4894 p
->arg
.fh
= NFS_FH(inode
);
4896 p
->arg
.open_seqid
= nfs_alloc_seqid(&lsp
->ls_state
->owner
->so_seqid
, gfp_mask
);
4897 if (p
->arg
.open_seqid
== NULL
)
4899 p
->arg
.lock_seqid
= nfs_alloc_seqid(&lsp
->ls_seqid
, gfp_mask
);
4900 if (p
->arg
.lock_seqid
== NULL
)
4901 goto out_free_seqid
;
4902 p
->arg
.lock_stateid
= &lsp
->ls_stateid
;
4903 p
->arg
.lock_owner
.clientid
= server
->nfs_client
->cl_clientid
;
4904 p
->arg
.lock_owner
.id
= lsp
->ls_seqid
.owner_id
;
4905 p
->arg
.lock_owner
.s_dev
= server
->s_dev
;
4906 p
->res
.lock_seqid
= p
->arg
.lock_seqid
;
4909 atomic_inc(&lsp
->ls_count
);
4910 p
->ctx
= get_nfs_open_context(ctx
);
4911 memcpy(&p
->fl
, fl
, sizeof(p
->fl
));
4914 nfs_free_seqid(p
->arg
.open_seqid
);
4920 static void nfs4_lock_prepare(struct rpc_task
*task
, void *calldata
)
4922 struct nfs4_lockdata
*data
= calldata
;
4923 struct nfs4_state
*state
= data
->lsp
->ls_state
;
4925 dprintk("%s: begin!\n", __func__
);
4926 if (nfs_wait_on_sequence(data
->arg
.lock_seqid
, task
) != 0)
4928 /* Do we need to do an open_to_lock_owner? */
4929 if (!(data
->arg
.lock_seqid
->sequence
->flags
& NFS_SEQID_CONFIRMED
)) {
4930 if (nfs_wait_on_sequence(data
->arg
.open_seqid
, task
) != 0) {
4931 goto out_release_lock_seqid
;
4933 data
->arg
.open_stateid
= &state
->open_stateid
;
4934 data
->arg
.new_lock_owner
= 1;
4935 data
->res
.open_seqid
= data
->arg
.open_seqid
;
4937 data
->arg
.new_lock_owner
= 0;
4938 if (!nfs4_valid_open_stateid(state
)) {
4939 data
->rpc_status
= -EBADF
;
4940 task
->tk_action
= NULL
;
4941 goto out_release_open_seqid
;
4943 data
->timestamp
= jiffies
;
4944 if (nfs4_setup_sequence(data
->server
,
4945 &data
->arg
.seq_args
,
4949 out_release_open_seqid
:
4950 nfs_release_seqid(data
->arg
.open_seqid
);
4951 out_release_lock_seqid
:
4952 nfs_release_seqid(data
->arg
.lock_seqid
);
4954 nfs4_sequence_done(task
, &data
->res
.seq_res
);
4955 dprintk("%s: done!, ret = %d\n", __func__
, data
->rpc_status
);
4958 static void nfs4_lock_done(struct rpc_task
*task
, void *calldata
)
4960 struct nfs4_lockdata
*data
= calldata
;
4962 dprintk("%s: begin!\n", __func__
);
4964 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
4967 data
->rpc_status
= task
->tk_status
;
4968 if (data
->arg
.new_lock_owner
!= 0) {
4969 if (data
->rpc_status
== 0)
4970 nfs_confirm_seqid(&data
->lsp
->ls_seqid
, 0);
4974 if (data
->rpc_status
== 0) {
4975 nfs4_stateid_copy(&data
->lsp
->ls_stateid
, &data
->res
.stateid
);
4976 set_bit(NFS_LOCK_INITIALIZED
, &data
->lsp
->ls_flags
);
4977 renew_lease(NFS_SERVER(data
->ctx
->dentry
->d_inode
), data
->timestamp
);
4980 dprintk("%s: done, ret = %d!\n", __func__
, data
->rpc_status
);
4983 static void nfs4_lock_release(void *calldata
)
4985 struct nfs4_lockdata
*data
= calldata
;
4987 dprintk("%s: begin!\n", __func__
);
4988 nfs_free_seqid(data
->arg
.open_seqid
);
4989 if (data
->cancelled
!= 0) {
4990 struct rpc_task
*task
;
4991 task
= nfs4_do_unlck(&data
->fl
, data
->ctx
, data
->lsp
,
4992 data
->arg
.lock_seqid
);
4994 rpc_put_task_async(task
);
4995 dprintk("%s: cancelling lock!\n", __func__
);
4997 nfs_free_seqid(data
->arg
.lock_seqid
);
4998 nfs4_put_lock_state(data
->lsp
);
4999 put_nfs_open_context(data
->ctx
);
5001 dprintk("%s: done!\n", __func__
);
5004 static const struct rpc_call_ops nfs4_lock_ops
= {
5005 .rpc_call_prepare
= nfs4_lock_prepare
,
5006 .rpc_call_done
= nfs4_lock_done
,
5007 .rpc_release
= nfs4_lock_release
,
5010 static void nfs4_handle_setlk_error(struct nfs_server
*server
, struct nfs4_lock_state
*lsp
, int new_lock_owner
, int error
)
5013 case -NFS4ERR_ADMIN_REVOKED
:
5014 case -NFS4ERR_BAD_STATEID
:
5015 lsp
->ls_seqid
.flags
&= ~NFS_SEQID_CONFIRMED
;
5016 if (new_lock_owner
!= 0 ||
5017 test_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
) != 0)
5018 nfs4_schedule_stateid_recovery(server
, lsp
->ls_state
);
5020 case -NFS4ERR_STALE_STATEID
:
5021 lsp
->ls_seqid
.flags
&= ~NFS_SEQID_CONFIRMED
;
5022 case -NFS4ERR_EXPIRED
:
5023 nfs4_schedule_lease_recovery(server
->nfs_client
);
5027 static int _nfs4_do_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*fl
, int recovery_type
)
5029 struct nfs4_lockdata
*data
;
5030 struct rpc_task
*task
;
5031 struct rpc_message msg
= {
5032 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCK
],
5033 .rpc_cred
= state
->owner
->so_cred
,
5035 struct rpc_task_setup task_setup_data
= {
5036 .rpc_client
= NFS_CLIENT(state
->inode
),
5037 .rpc_message
= &msg
,
5038 .callback_ops
= &nfs4_lock_ops
,
5039 .workqueue
= nfsiod_workqueue
,
5040 .flags
= RPC_TASK_ASYNC
,
5044 dprintk("%s: begin!\n", __func__
);
5045 data
= nfs4_alloc_lockdata(fl
, nfs_file_open_context(fl
->fl_file
),
5046 fl
->fl_u
.nfs4_fl
.owner
,
5047 recovery_type
== NFS_LOCK_NEW
? GFP_KERNEL
: GFP_NOFS
);
5051 data
->arg
.block
= 1;
5052 nfs41_init_sequence(&data
->arg
.seq_args
, &data
->res
.seq_res
, 1);
5053 msg
.rpc_argp
= &data
->arg
;
5054 msg
.rpc_resp
= &data
->res
;
5055 task_setup_data
.callback_data
= data
;
5056 if (recovery_type
> NFS_LOCK_NEW
) {
5057 if (recovery_type
== NFS_LOCK_RECLAIM
)
5058 data
->arg
.reclaim
= NFS_LOCK_RECLAIM
;
5059 nfs4_set_sequence_privileged(&data
->arg
.seq_args
);
5061 task
= rpc_run_task(&task_setup_data
);
5063 return PTR_ERR(task
);
5064 ret
= nfs4_wait_for_completion_rpc_task(task
);
5066 ret
= data
->rpc_status
;
5068 nfs4_handle_setlk_error(data
->server
, data
->lsp
,
5069 data
->arg
.new_lock_owner
, ret
);
5071 data
->cancelled
= 1;
5073 dprintk("%s: done, ret = %d!\n", __func__
, ret
);
5077 static int nfs4_lock_reclaim(struct nfs4_state
*state
, struct file_lock
*request
)
5079 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
5080 struct nfs4_exception exception
= {
5081 .inode
= state
->inode
,
5086 /* Cache the lock if possible... */
5087 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) != 0)
5089 err
= _nfs4_do_setlk(state
, F_SETLK
, request
, NFS_LOCK_RECLAIM
);
5090 if (err
!= -NFS4ERR_DELAY
)
5092 nfs4_handle_exception(server
, err
, &exception
);
5093 } while (exception
.retry
);
5097 static int nfs4_lock_expired(struct nfs4_state
*state
, struct file_lock
*request
)
5099 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
5100 struct nfs4_exception exception
= {
5101 .inode
= state
->inode
,
5105 err
= nfs4_set_lock_state(state
, request
);
5109 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) != 0)
5111 err
= _nfs4_do_setlk(state
, F_SETLK
, request
, NFS_LOCK_EXPIRED
);
5115 case -NFS4ERR_GRACE
:
5116 case -NFS4ERR_DELAY
:
5117 nfs4_handle_exception(server
, err
, &exception
);
5120 } while (exception
.retry
);
5125 #if defined(CONFIG_NFS_V4_1)
5127 * nfs41_check_expired_locks - possibly free a lock stateid
5129 * @state: NFSv4 state for an inode
5131 * Returns NFS_OK if recovery for this stateid is now finished.
5132 * Otherwise a negative NFS4ERR value is returned.
5134 static int nfs41_check_expired_locks(struct nfs4_state
*state
)
5136 int status
, ret
= -NFS4ERR_BAD_STATEID
;
5137 struct nfs4_lock_state
*lsp
;
5138 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
5140 list_for_each_entry(lsp
, &state
->lock_states
, ls_locks
) {
5141 if (test_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
)) {
5142 status
= nfs41_test_stateid(server
, &lsp
->ls_stateid
);
5143 if (status
!= NFS_OK
) {
5144 /* Free the stateid unless the server
5145 * informs us the stateid is unrecognized. */
5146 if (status
!= -NFS4ERR_BAD_STATEID
)
5147 nfs41_free_stateid(server
,
5149 clear_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
);
5158 static int nfs41_lock_expired(struct nfs4_state
*state
, struct file_lock
*request
)
5160 int status
= NFS_OK
;
5162 if (test_bit(LK_STATE_IN_USE
, &state
->flags
))
5163 status
= nfs41_check_expired_locks(state
);
5164 if (status
!= NFS_OK
)
5165 status
= nfs4_lock_expired(state
, request
);
5170 static int _nfs4_proc_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
5172 struct nfs4_state_owner
*sp
= state
->owner
;
5173 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
5174 unsigned char fl_flags
= request
->fl_flags
;
5176 int status
= -ENOLCK
;
5178 if ((fl_flags
& FL_POSIX
) &&
5179 !test_bit(NFS_STATE_POSIX_LOCKS
, &state
->flags
))
5181 /* Is this a delegated open? */
5182 status
= nfs4_set_lock_state(state
, request
);
5185 request
->fl_flags
|= FL_ACCESS
;
5186 status
= do_vfs_lock(request
->fl_file
, request
);
5189 down_read(&nfsi
->rwsem
);
5190 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
)) {
5191 /* Yes: cache locks! */
5192 /* ...but avoid races with delegation recall... */
5193 request
->fl_flags
= fl_flags
& ~FL_SLEEP
;
5194 status
= do_vfs_lock(request
->fl_file
, request
);
5197 seq
= raw_seqcount_begin(&sp
->so_reclaim_seqcount
);
5198 up_read(&nfsi
->rwsem
);
5199 status
= _nfs4_do_setlk(state
, cmd
, request
, NFS_LOCK_NEW
);
5202 down_read(&nfsi
->rwsem
);
5203 if (read_seqcount_retry(&sp
->so_reclaim_seqcount
, seq
)) {
5204 status
= -NFS4ERR_DELAY
;
5207 /* Note: we always want to sleep here! */
5208 request
->fl_flags
= fl_flags
| FL_SLEEP
;
5209 if (do_vfs_lock(request
->fl_file
, request
) < 0)
5210 printk(KERN_WARNING
"NFS: %s: VFS is out of sync with lock "
5211 "manager!\n", __func__
);
5213 up_read(&nfsi
->rwsem
);
5215 request
->fl_flags
= fl_flags
;
5219 static int nfs4_proc_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
5221 struct nfs4_exception exception
= {
5223 .inode
= state
->inode
,
5228 err
= _nfs4_proc_setlk(state
, cmd
, request
);
5229 if (err
== -NFS4ERR_DENIED
)
5231 err
= nfs4_handle_exception(NFS_SERVER(state
->inode
),
5233 } while (exception
.retry
);
5238 nfs4_proc_lock(struct file
*filp
, int cmd
, struct file_lock
*request
)
5240 struct nfs_open_context
*ctx
;
5241 struct nfs4_state
*state
;
5242 unsigned long timeout
= NFS4_LOCK_MINTIMEOUT
;
5245 /* verify open state */
5246 ctx
= nfs_file_open_context(filp
);
5249 if (request
->fl_start
< 0 || request
->fl_end
< 0)
5252 if (IS_GETLK(cmd
)) {
5254 return nfs4_proc_getlk(state
, F_GETLK
, request
);
5258 if (!(IS_SETLK(cmd
) || IS_SETLKW(cmd
)))
5261 if (request
->fl_type
== F_UNLCK
) {
5263 return nfs4_proc_unlck(state
, cmd
, request
);
5270 * Don't rely on the VFS having checked the file open mode,
5271 * since it won't do this for flock() locks.
5273 switch (request
->fl_type
) {
5275 if (!(filp
->f_mode
& FMODE_READ
))
5279 if (!(filp
->f_mode
& FMODE_WRITE
))
5284 status
= nfs4_proc_setlk(state
, cmd
, request
);
5285 if ((status
!= -EAGAIN
) || IS_SETLK(cmd
))
5287 timeout
= nfs4_set_lock_task_retry(timeout
);
5288 status
= -ERESTARTSYS
;
5291 } while(status
< 0);
5295 int nfs4_lock_delegation_recall(struct file_lock
*fl
, struct nfs4_state
*state
, const nfs4_stateid
*stateid
)
5297 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
5300 err
= nfs4_set_lock_state(state
, fl
);
5303 err
= _nfs4_do_setlk(state
, F_SETLK
, fl
, NFS_LOCK_NEW
);
5304 return nfs4_handle_delegation_recall_error(server
, state
, stateid
, err
);
5307 struct nfs_release_lockowner_data
{
5308 struct nfs4_lock_state
*lsp
;
5309 struct nfs_server
*server
;
5310 struct nfs_release_lockowner_args args
;
5313 static void nfs4_release_lockowner_release(void *calldata
)
5315 struct nfs_release_lockowner_data
*data
= calldata
;
5316 nfs4_free_lock_state(data
->server
, data
->lsp
);
5320 static const struct rpc_call_ops nfs4_release_lockowner_ops
= {
5321 .rpc_release
= nfs4_release_lockowner_release
,
5324 static int nfs4_release_lockowner(struct nfs_server
*server
, struct nfs4_lock_state
*lsp
)
5326 struct nfs_release_lockowner_data
*data
;
5327 struct rpc_message msg
= {
5328 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RELEASE_LOCKOWNER
],
5331 if (server
->nfs_client
->cl_mvops
->minor_version
!= 0)
5333 data
= kmalloc(sizeof(*data
), GFP_NOFS
);
5337 data
->server
= server
;
5338 data
->args
.lock_owner
.clientid
= server
->nfs_client
->cl_clientid
;
5339 data
->args
.lock_owner
.id
= lsp
->ls_seqid
.owner_id
;
5340 data
->args
.lock_owner
.s_dev
= server
->s_dev
;
5341 msg
.rpc_argp
= &data
->args
;
5342 rpc_call_async(server
->client
, &msg
, 0, &nfs4_release_lockowner_ops
, data
);
5346 #define XATTR_NAME_NFSV4_ACL "system.nfs4_acl"
5348 static int nfs4_xattr_set_nfs4_acl(struct dentry
*dentry
, const char *key
,
5349 const void *buf
, size_t buflen
,
5350 int flags
, int type
)
5352 if (strcmp(key
, "") != 0)
5355 return nfs4_proc_set_acl(dentry
->d_inode
, buf
, buflen
);
5358 static int nfs4_xattr_get_nfs4_acl(struct dentry
*dentry
, const char *key
,
5359 void *buf
, size_t buflen
, int type
)
5361 if (strcmp(key
, "") != 0)
5364 return nfs4_proc_get_acl(dentry
->d_inode
, buf
, buflen
);
5367 static size_t nfs4_xattr_list_nfs4_acl(struct dentry
*dentry
, char *list
,
5368 size_t list_len
, const char *name
,
5369 size_t name_len
, int type
)
5371 size_t len
= sizeof(XATTR_NAME_NFSV4_ACL
);
5373 if (!nfs4_server_supports_acls(NFS_SERVER(dentry
->d_inode
)))
5376 if (list
&& len
<= list_len
)
5377 memcpy(list
, XATTR_NAME_NFSV4_ACL
, len
);
5382 * nfs_fhget will use either the mounted_on_fileid or the fileid
5384 static void nfs_fixup_referral_attributes(struct nfs_fattr
*fattr
)
5386 if (!(((fattr
->valid
& NFS_ATTR_FATTR_MOUNTED_ON_FILEID
) ||
5387 (fattr
->valid
& NFS_ATTR_FATTR_FILEID
)) &&
5388 (fattr
->valid
& NFS_ATTR_FATTR_FSID
) &&
5389 (fattr
->valid
& NFS_ATTR_FATTR_V4_LOCATIONS
)))
5392 fattr
->valid
|= NFS_ATTR_FATTR_TYPE
| NFS_ATTR_FATTR_MODE
|
5393 NFS_ATTR_FATTR_NLINK
| NFS_ATTR_FATTR_V4_REFERRAL
;
5394 fattr
->mode
= S_IFDIR
| S_IRUGO
| S_IXUGO
;
5398 static int _nfs4_proc_fs_locations(struct rpc_clnt
*client
, struct inode
*dir
,
5399 const struct qstr
*name
,
5400 struct nfs4_fs_locations
*fs_locations
,
5403 struct nfs_server
*server
= NFS_SERVER(dir
);
5405 [0] = FATTR4_WORD0_FSID
| FATTR4_WORD0_FS_LOCATIONS
,
5407 struct nfs4_fs_locations_arg args
= {
5408 .dir_fh
= NFS_FH(dir
),
5413 struct nfs4_fs_locations_res res
= {
5414 .fs_locations
= fs_locations
,
5416 struct rpc_message msg
= {
5417 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FS_LOCATIONS
],
5423 dprintk("%s: start\n", __func__
);
5425 /* Ask for the fileid of the absent filesystem if mounted_on_fileid
5426 * is not supported */
5427 if (NFS_SERVER(dir
)->attr_bitmask
[1] & FATTR4_WORD1_MOUNTED_ON_FILEID
)
5428 bitmask
[1] |= FATTR4_WORD1_MOUNTED_ON_FILEID
;
5430 bitmask
[0] |= FATTR4_WORD0_FILEID
;
5432 nfs_fattr_init(&fs_locations
->fattr
);
5433 fs_locations
->server
= server
;
5434 fs_locations
->nlocations
= 0;
5435 status
= nfs4_call_sync(client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
5436 dprintk("%s: returned status = %d\n", __func__
, status
);
5440 int nfs4_proc_fs_locations(struct rpc_clnt
*client
, struct inode
*dir
,
5441 const struct qstr
*name
,
5442 struct nfs4_fs_locations
*fs_locations
,
5445 struct nfs4_exception exception
= { };
5448 err
= nfs4_handle_exception(NFS_SERVER(dir
),
5449 _nfs4_proc_fs_locations(client
, dir
, name
, fs_locations
, page
),
5451 } while (exception
.retry
);
5455 static int _nfs4_proc_secinfo(struct inode
*dir
, const struct qstr
*name
, struct nfs4_secinfo_flavors
*flavors
)
5458 struct nfs4_secinfo_arg args
= {
5459 .dir_fh
= NFS_FH(dir
),
5462 struct nfs4_secinfo_res res
= {
5465 struct rpc_message msg
= {
5466 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SECINFO
],
5471 dprintk("NFS call secinfo %s\n", name
->name
);
5472 status
= nfs4_call_sync(NFS_SERVER(dir
)->client
, NFS_SERVER(dir
), &msg
, &args
.seq_args
, &res
.seq_res
, 0);
5473 dprintk("NFS reply secinfo: %d\n", status
);
5477 int nfs4_proc_secinfo(struct inode
*dir
, const struct qstr
*name
,
5478 struct nfs4_secinfo_flavors
*flavors
)
5480 struct nfs4_exception exception
= { };
5483 err
= nfs4_handle_exception(NFS_SERVER(dir
),
5484 _nfs4_proc_secinfo(dir
, name
, flavors
),
5486 } while (exception
.retry
);
5490 #ifdef CONFIG_NFS_V4_1
5492 * Check the exchange flags returned by the server for invalid flags, having
5493 * both PNFS and NON_PNFS flags set, and not having one of NON_PNFS, PNFS, or
5496 static int nfs4_check_cl_exchange_flags(u32 flags
)
5498 if (flags
& ~EXCHGID4_FLAG_MASK_R
)
5500 if ((flags
& EXCHGID4_FLAG_USE_PNFS_MDS
) &&
5501 (flags
& EXCHGID4_FLAG_USE_NON_PNFS
))
5503 if (!(flags
& (EXCHGID4_FLAG_MASK_PNFS
)))
5507 return -NFS4ERR_INVAL
;
5511 nfs41_same_server_scope(struct nfs41_server_scope
*a
,
5512 struct nfs41_server_scope
*b
)
5514 if (a
->server_scope_sz
== b
->server_scope_sz
&&
5515 memcmp(a
->server_scope
, b
->server_scope
, a
->server_scope_sz
) == 0)
5522 * nfs4_proc_bind_conn_to_session()
5524 * The 4.1 client currently uses the same TCP connection for the
5525 * fore and backchannel.
5527 int nfs4_proc_bind_conn_to_session(struct nfs_client
*clp
, struct rpc_cred
*cred
)
5530 struct nfs41_bind_conn_to_session_res res
;
5531 struct rpc_message msg
= {
5533 &nfs4_procedures
[NFSPROC4_CLNT_BIND_CONN_TO_SESSION
],
5539 dprintk("--> %s\n", __func__
);
5541 res
.session
= kzalloc(sizeof(struct nfs4_session
), GFP_NOFS
);
5542 if (unlikely(res
.session
== NULL
)) {
5547 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
5549 if (memcmp(res
.session
->sess_id
.data
,
5550 clp
->cl_session
->sess_id
.data
, NFS4_MAX_SESSIONID_LEN
)) {
5551 dprintk("NFS: %s: Session ID mismatch\n", __func__
);
5555 if (res
.dir
!= NFS4_CDFS4_BOTH
) {
5556 dprintk("NFS: %s: Unexpected direction from server\n",
5561 if (res
.use_conn_in_rdma_mode
) {
5562 dprintk("NFS: %s: Server returned RDMA mode = true\n",
5571 dprintk("<-- %s status= %d\n", __func__
, status
);
5576 * nfs4_proc_exchange_id()
5578 * Returns zero, a negative errno, or a negative NFS4ERR status code.
5580 * Since the clientid has expired, all compounds using sessions
5581 * associated with the stale clientid will be returning
5582 * NFS4ERR_BADSESSION in the sequence operation, and will therefore
5583 * be in some phase of session reset.
5585 int nfs4_proc_exchange_id(struct nfs_client
*clp
, struct rpc_cred
*cred
)
5587 nfs4_verifier verifier
;
5588 struct nfs41_exchange_id_args args
= {
5589 .verifier
= &verifier
,
5591 .flags
= EXCHGID4_FLAG_SUPP_MOVED_REFER
,
5593 struct nfs41_exchange_id_res res
= {
5597 struct rpc_message msg
= {
5598 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_EXCHANGE_ID
],
5604 nfs4_init_boot_verifier(clp
, &verifier
);
5605 args
.id_len
= nfs4_init_uniform_client_string(clp
, args
.id
,
5607 dprintk("NFS call exchange_id auth=%s, '%.*s'\n",
5608 clp
->cl_rpcclient
->cl_auth
->au_ops
->au_name
,
5609 args
.id_len
, args
.id
);
5611 res
.server_owner
= kzalloc(sizeof(struct nfs41_server_owner
),
5613 if (unlikely(res
.server_owner
== NULL
)) {
5618 res
.server_scope
= kzalloc(sizeof(struct nfs41_server_scope
),
5620 if (unlikely(res
.server_scope
== NULL
)) {
5622 goto out_server_owner
;
5625 res
.impl_id
= kzalloc(sizeof(struct nfs41_impl_id
), GFP_NOFS
);
5626 if (unlikely(res
.impl_id
== NULL
)) {
5628 goto out_server_scope
;
5631 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
5633 status
= nfs4_check_cl_exchange_flags(res
.flags
);
5636 clp
->cl_clientid
= res
.clientid
;
5637 clp
->cl_exchange_flags
= (res
.flags
& ~EXCHGID4_FLAG_CONFIRMED_R
);
5638 if (!(res
.flags
& EXCHGID4_FLAG_CONFIRMED_R
))
5639 clp
->cl_seqid
= res
.seqid
;
5641 kfree(clp
->cl_serverowner
);
5642 clp
->cl_serverowner
= res
.server_owner
;
5643 res
.server_owner
= NULL
;
5645 /* use the most recent implementation id */
5646 kfree(clp
->cl_implid
);
5647 clp
->cl_implid
= res
.impl_id
;
5649 if (clp
->cl_serverscope
!= NULL
&&
5650 !nfs41_same_server_scope(clp
->cl_serverscope
,
5651 res
.server_scope
)) {
5652 dprintk("%s: server_scope mismatch detected\n",
5654 set_bit(NFS4CLNT_SERVER_SCOPE_MISMATCH
, &clp
->cl_state
);
5655 kfree(clp
->cl_serverscope
);
5656 clp
->cl_serverscope
= NULL
;
5659 if (clp
->cl_serverscope
== NULL
) {
5660 clp
->cl_serverscope
= res
.server_scope
;
5667 kfree(res
.server_owner
);
5669 kfree(res
.server_scope
);
5671 if (clp
->cl_implid
!= NULL
)
5672 dprintk("NFS reply exchange_id: Server Implementation ID: "
5673 "domain: %s, name: %s, date: %llu,%u\n",
5674 clp
->cl_implid
->domain
, clp
->cl_implid
->name
,
5675 clp
->cl_implid
->date
.seconds
,
5676 clp
->cl_implid
->date
.nseconds
);
5677 dprintk("NFS reply exchange_id: %d\n", status
);
5681 static int _nfs4_proc_destroy_clientid(struct nfs_client
*clp
,
5682 struct rpc_cred
*cred
)
5684 struct rpc_message msg
= {
5685 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DESTROY_CLIENTID
],
5691 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
5693 dprintk("NFS: Got error %d from the server %s on "
5694 "DESTROY_CLIENTID.", status
, clp
->cl_hostname
);
5698 static int nfs4_proc_destroy_clientid(struct nfs_client
*clp
,
5699 struct rpc_cred
*cred
)
5704 for (loop
= NFS4_MAX_LOOP_ON_RECOVER
; loop
!= 0; loop
--) {
5705 ret
= _nfs4_proc_destroy_clientid(clp
, cred
);
5707 case -NFS4ERR_DELAY
:
5708 case -NFS4ERR_CLIENTID_BUSY
:
5718 int nfs4_destroy_clientid(struct nfs_client
*clp
)
5720 struct rpc_cred
*cred
;
5723 if (clp
->cl_mvops
->minor_version
< 1)
5725 if (clp
->cl_exchange_flags
== 0)
5727 if (clp
->cl_preserve_clid
)
5729 cred
= nfs4_get_exchange_id_cred(clp
);
5730 ret
= nfs4_proc_destroy_clientid(clp
, cred
);
5735 case -NFS4ERR_STALE_CLIENTID
:
5736 clp
->cl_exchange_flags
= 0;
5742 struct nfs4_get_lease_time_data
{
5743 struct nfs4_get_lease_time_args
*args
;
5744 struct nfs4_get_lease_time_res
*res
;
5745 struct nfs_client
*clp
;
5748 static void nfs4_get_lease_time_prepare(struct rpc_task
*task
,
5751 struct nfs4_get_lease_time_data
*data
=
5752 (struct nfs4_get_lease_time_data
*)calldata
;
5754 dprintk("--> %s\n", __func__
);
5755 /* just setup sequence, do not trigger session recovery
5756 since we're invoked within one */
5757 nfs41_setup_sequence(data
->clp
->cl_session
,
5758 &data
->args
->la_seq_args
,
5759 &data
->res
->lr_seq_res
,
5761 dprintk("<-- %s\n", __func__
);
5765 * Called from nfs4_state_manager thread for session setup, so don't recover
5766 * from sequence operation or clientid errors.
5768 static void nfs4_get_lease_time_done(struct rpc_task
*task
, void *calldata
)
5770 struct nfs4_get_lease_time_data
*data
=
5771 (struct nfs4_get_lease_time_data
*)calldata
;
5773 dprintk("--> %s\n", __func__
);
5774 if (!nfs41_sequence_done(task
, &data
->res
->lr_seq_res
))
5776 switch (task
->tk_status
) {
5777 case -NFS4ERR_DELAY
:
5778 case -NFS4ERR_GRACE
:
5779 dprintk("%s Retry: tk_status %d\n", __func__
, task
->tk_status
);
5780 rpc_delay(task
, NFS4_POLL_RETRY_MIN
);
5781 task
->tk_status
= 0;
5783 case -NFS4ERR_RETRY_UNCACHED_REP
:
5784 rpc_restart_call_prepare(task
);
5787 dprintk("<-- %s\n", __func__
);
5790 static const struct rpc_call_ops nfs4_get_lease_time_ops
= {
5791 .rpc_call_prepare
= nfs4_get_lease_time_prepare
,
5792 .rpc_call_done
= nfs4_get_lease_time_done
,
5795 int nfs4_proc_get_lease_time(struct nfs_client
*clp
, struct nfs_fsinfo
*fsinfo
)
5797 struct rpc_task
*task
;
5798 struct nfs4_get_lease_time_args args
;
5799 struct nfs4_get_lease_time_res res
= {
5800 .lr_fsinfo
= fsinfo
,
5802 struct nfs4_get_lease_time_data data
= {
5807 struct rpc_message msg
= {
5808 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GET_LEASE_TIME
],
5812 struct rpc_task_setup task_setup
= {
5813 .rpc_client
= clp
->cl_rpcclient
,
5814 .rpc_message
= &msg
,
5815 .callback_ops
= &nfs4_get_lease_time_ops
,
5816 .callback_data
= &data
,
5817 .flags
= RPC_TASK_TIMEOUT
,
5821 nfs41_init_sequence(&args
.la_seq_args
, &res
.lr_seq_res
, 0);
5822 nfs4_set_sequence_privileged(&args
.la_seq_args
);
5823 dprintk("--> %s\n", __func__
);
5824 task
= rpc_run_task(&task_setup
);
5827 status
= PTR_ERR(task
);
5829 status
= task
->tk_status
;
5832 dprintk("<-- %s return %d\n", __func__
, status
);
5838 * Initialize the values to be used by the client in CREATE_SESSION
5839 * If nfs4_init_session set the fore channel request and response sizes,
5842 * Set the back channel max_resp_sz_cached to zero to force the client to
5843 * always set csa_cachethis to FALSE because the current implementation
5844 * of the back channel DRC only supports caching the CB_SEQUENCE operation.
5846 static void nfs4_init_channel_attrs(struct nfs41_create_session_args
*args
)
5848 struct nfs4_session
*session
= args
->client
->cl_session
;
5849 unsigned int mxrqst_sz
= session
->fc_target_max_rqst_sz
,
5850 mxresp_sz
= session
->fc_target_max_resp_sz
;
5853 mxrqst_sz
= NFS_MAX_FILE_IO_SIZE
;
5855 mxresp_sz
= NFS_MAX_FILE_IO_SIZE
;
5856 /* Fore channel attributes */
5857 args
->fc_attrs
.max_rqst_sz
= mxrqst_sz
;
5858 args
->fc_attrs
.max_resp_sz
= mxresp_sz
;
5859 args
->fc_attrs
.max_ops
= NFS4_MAX_OPS
;
5860 args
->fc_attrs
.max_reqs
= max_session_slots
;
5862 dprintk("%s: Fore Channel : max_rqst_sz=%u max_resp_sz=%u "
5863 "max_ops=%u max_reqs=%u\n",
5865 args
->fc_attrs
.max_rqst_sz
, args
->fc_attrs
.max_resp_sz
,
5866 args
->fc_attrs
.max_ops
, args
->fc_attrs
.max_reqs
);
5868 /* Back channel attributes */
5869 args
->bc_attrs
.max_rqst_sz
= PAGE_SIZE
;
5870 args
->bc_attrs
.max_resp_sz
= PAGE_SIZE
;
5871 args
->bc_attrs
.max_resp_sz_cached
= 0;
5872 args
->bc_attrs
.max_ops
= NFS4_MAX_BACK_CHANNEL_OPS
;
5873 args
->bc_attrs
.max_reqs
= 1;
5875 dprintk("%s: Back Channel : max_rqst_sz=%u max_resp_sz=%u "
5876 "max_resp_sz_cached=%u max_ops=%u max_reqs=%u\n",
5878 args
->bc_attrs
.max_rqst_sz
, args
->bc_attrs
.max_resp_sz
,
5879 args
->bc_attrs
.max_resp_sz_cached
, args
->bc_attrs
.max_ops
,
5880 args
->bc_attrs
.max_reqs
);
5883 static int nfs4_verify_fore_channel_attrs(struct nfs41_create_session_args
*args
, struct nfs4_session
*session
)
5885 struct nfs4_channel_attrs
*sent
= &args
->fc_attrs
;
5886 struct nfs4_channel_attrs
*rcvd
= &session
->fc_attrs
;
5888 if (rcvd
->max_resp_sz
> sent
->max_resp_sz
)
5891 * Our requested max_ops is the minimum we need; we're not
5892 * prepared to break up compounds into smaller pieces than that.
5893 * So, no point even trying to continue if the server won't
5896 if (rcvd
->max_ops
< sent
->max_ops
)
5898 if (rcvd
->max_reqs
== 0)
5900 if (rcvd
->max_reqs
> NFS4_MAX_SLOT_TABLE
)
5901 rcvd
->max_reqs
= NFS4_MAX_SLOT_TABLE
;
5905 static int nfs4_verify_back_channel_attrs(struct nfs41_create_session_args
*args
, struct nfs4_session
*session
)
5907 struct nfs4_channel_attrs
*sent
= &args
->bc_attrs
;
5908 struct nfs4_channel_attrs
*rcvd
= &session
->bc_attrs
;
5910 if (rcvd
->max_rqst_sz
> sent
->max_rqst_sz
)
5912 if (rcvd
->max_resp_sz
< sent
->max_resp_sz
)
5914 if (rcvd
->max_resp_sz_cached
> sent
->max_resp_sz_cached
)
5916 /* These would render the backchannel useless: */
5917 if (rcvd
->max_ops
!= sent
->max_ops
)
5919 if (rcvd
->max_reqs
!= sent
->max_reqs
)
5924 static int nfs4_verify_channel_attrs(struct nfs41_create_session_args
*args
,
5925 struct nfs4_session
*session
)
5929 ret
= nfs4_verify_fore_channel_attrs(args
, session
);
5932 return nfs4_verify_back_channel_attrs(args
, session
);
5935 static int _nfs4_proc_create_session(struct nfs_client
*clp
,
5936 struct rpc_cred
*cred
)
5938 struct nfs4_session
*session
= clp
->cl_session
;
5939 struct nfs41_create_session_args args
= {
5941 .cb_program
= NFS4_CALLBACK
,
5943 struct nfs41_create_session_res res
= {
5946 struct rpc_message msg
= {
5947 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CREATE_SESSION
],
5954 nfs4_init_channel_attrs(&args
);
5955 args
.flags
= (SESSION4_PERSIST
| SESSION4_BACK_CHAN
);
5957 status
= rpc_call_sync(session
->clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
5960 /* Verify the session's negotiated channel_attrs values */
5961 status
= nfs4_verify_channel_attrs(&args
, session
);
5962 /* Increment the clientid slot sequence id */
5970 * Issues a CREATE_SESSION operation to the server.
5971 * It is the responsibility of the caller to verify the session is
5972 * expired before calling this routine.
5974 int nfs4_proc_create_session(struct nfs_client
*clp
, struct rpc_cred
*cred
)
5978 struct nfs4_session
*session
= clp
->cl_session
;
5980 dprintk("--> %s clp=%p session=%p\n", __func__
, clp
, session
);
5982 status
= _nfs4_proc_create_session(clp
, cred
);
5986 /* Init or reset the session slot tables */
5987 status
= nfs4_setup_session_slot_tables(session
);
5988 dprintk("slot table setup returned %d\n", status
);
5992 ptr
= (unsigned *)&session
->sess_id
.data
[0];
5993 dprintk("%s client>seqid %d sessionid %u:%u:%u:%u\n", __func__
,
5994 clp
->cl_seqid
, ptr
[0], ptr
[1], ptr
[2], ptr
[3]);
5996 dprintk("<-- %s\n", __func__
);
6001 * Issue the over-the-wire RPC DESTROY_SESSION.
6002 * The caller must serialize access to this routine.
6004 int nfs4_proc_destroy_session(struct nfs4_session
*session
,
6005 struct rpc_cred
*cred
)
6007 struct rpc_message msg
= {
6008 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DESTROY_SESSION
],
6009 .rpc_argp
= session
,
6014 dprintk("--> nfs4_proc_destroy_session\n");
6016 /* session is still being setup */
6017 if (session
->clp
->cl_cons_state
!= NFS_CS_READY
)
6020 status
= rpc_call_sync(session
->clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
6023 dprintk("NFS: Got error %d from the server on DESTROY_SESSION. "
6024 "Session has been destroyed regardless...\n", status
);
6026 dprintk("<-- nfs4_proc_destroy_session\n");
6031 * Renew the cl_session lease.
6033 struct nfs4_sequence_data
{
6034 struct nfs_client
*clp
;
6035 struct nfs4_sequence_args args
;
6036 struct nfs4_sequence_res res
;
6039 static void nfs41_sequence_release(void *data
)
6041 struct nfs4_sequence_data
*calldata
= data
;
6042 struct nfs_client
*clp
= calldata
->clp
;
6044 if (atomic_read(&clp
->cl_count
) > 1)
6045 nfs4_schedule_state_renewal(clp
);
6046 nfs_put_client(clp
);
6050 static int nfs41_sequence_handle_errors(struct rpc_task
*task
, struct nfs_client
*clp
)
6052 switch(task
->tk_status
) {
6053 case -NFS4ERR_DELAY
:
6054 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
6057 nfs4_schedule_lease_recovery(clp
);
6062 static void nfs41_sequence_call_done(struct rpc_task
*task
, void *data
)
6064 struct nfs4_sequence_data
*calldata
= data
;
6065 struct nfs_client
*clp
= calldata
->clp
;
6067 if (!nfs41_sequence_done(task
, task
->tk_msg
.rpc_resp
))
6070 if (task
->tk_status
< 0) {
6071 dprintk("%s ERROR %d\n", __func__
, task
->tk_status
);
6072 if (atomic_read(&clp
->cl_count
) == 1)
6075 if (nfs41_sequence_handle_errors(task
, clp
) == -EAGAIN
) {
6076 rpc_restart_call_prepare(task
);
6080 dprintk("%s rpc_cred %p\n", __func__
, task
->tk_msg
.rpc_cred
);
6082 dprintk("<-- %s\n", __func__
);
6085 static void nfs41_sequence_prepare(struct rpc_task
*task
, void *data
)
6087 struct nfs4_sequence_data
*calldata
= data
;
6088 struct nfs_client
*clp
= calldata
->clp
;
6089 struct nfs4_sequence_args
*args
;
6090 struct nfs4_sequence_res
*res
;
6092 args
= task
->tk_msg
.rpc_argp
;
6093 res
= task
->tk_msg
.rpc_resp
;
6095 nfs41_setup_sequence(clp
->cl_session
, args
, res
, task
);
6098 static const struct rpc_call_ops nfs41_sequence_ops
= {
6099 .rpc_call_done
= nfs41_sequence_call_done
,
6100 .rpc_call_prepare
= nfs41_sequence_prepare
,
6101 .rpc_release
= nfs41_sequence_release
,
6104 static struct rpc_task
*_nfs41_proc_sequence(struct nfs_client
*clp
,
6105 struct rpc_cred
*cred
,
6108 struct nfs4_sequence_data
*calldata
;
6109 struct rpc_message msg
= {
6110 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SEQUENCE
],
6113 struct rpc_task_setup task_setup_data
= {
6114 .rpc_client
= clp
->cl_rpcclient
,
6115 .rpc_message
= &msg
,
6116 .callback_ops
= &nfs41_sequence_ops
,
6117 .flags
= RPC_TASK_ASYNC
| RPC_TASK_TIMEOUT
,
6120 if (!atomic_inc_not_zero(&clp
->cl_count
))
6121 return ERR_PTR(-EIO
);
6122 calldata
= kzalloc(sizeof(*calldata
), GFP_NOFS
);
6123 if (calldata
== NULL
) {
6124 nfs_put_client(clp
);
6125 return ERR_PTR(-ENOMEM
);
6127 nfs41_init_sequence(&calldata
->args
, &calldata
->res
, 0);
6129 nfs4_set_sequence_privileged(&calldata
->args
);
6130 msg
.rpc_argp
= &calldata
->args
;
6131 msg
.rpc_resp
= &calldata
->res
;
6132 calldata
->clp
= clp
;
6133 task_setup_data
.callback_data
= calldata
;
6135 return rpc_run_task(&task_setup_data
);
6138 static int nfs41_proc_async_sequence(struct nfs_client
*clp
, struct rpc_cred
*cred
, unsigned renew_flags
)
6140 struct rpc_task
*task
;
6143 if ((renew_flags
& NFS4_RENEW_TIMEOUT
) == 0)
6145 task
= _nfs41_proc_sequence(clp
, cred
, false);
6147 ret
= PTR_ERR(task
);
6149 rpc_put_task_async(task
);
6150 dprintk("<-- %s status=%d\n", __func__
, ret
);
6154 static int nfs4_proc_sequence(struct nfs_client
*clp
, struct rpc_cred
*cred
)
6156 struct rpc_task
*task
;
6159 task
= _nfs41_proc_sequence(clp
, cred
, true);
6161 ret
= PTR_ERR(task
);
6164 ret
= rpc_wait_for_completion_task(task
);
6166 struct nfs4_sequence_res
*res
= task
->tk_msg
.rpc_resp
;
6168 if (task
->tk_status
== 0)
6169 nfs41_handle_sequence_flag_errors(clp
, res
->sr_status_flags
);
6170 ret
= task
->tk_status
;
6174 dprintk("<-- %s status=%d\n", __func__
, ret
);
6178 struct nfs4_reclaim_complete_data
{
6179 struct nfs_client
*clp
;
6180 struct nfs41_reclaim_complete_args arg
;
6181 struct nfs41_reclaim_complete_res res
;
6184 static void nfs4_reclaim_complete_prepare(struct rpc_task
*task
, void *data
)
6186 struct nfs4_reclaim_complete_data
*calldata
= data
;
6188 nfs41_setup_sequence(calldata
->clp
->cl_session
,
6189 &calldata
->arg
.seq_args
,
6190 &calldata
->res
.seq_res
,
6194 static int nfs41_reclaim_complete_handle_errors(struct rpc_task
*task
, struct nfs_client
*clp
)
6196 switch(task
->tk_status
) {
6198 case -NFS4ERR_COMPLETE_ALREADY
:
6199 case -NFS4ERR_WRONG_CRED
: /* What to do here? */
6201 case -NFS4ERR_DELAY
:
6202 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
6204 case -NFS4ERR_RETRY_UNCACHED_REP
:
6207 nfs4_schedule_lease_recovery(clp
);
6212 static void nfs4_reclaim_complete_done(struct rpc_task
*task
, void *data
)
6214 struct nfs4_reclaim_complete_data
*calldata
= data
;
6215 struct nfs_client
*clp
= calldata
->clp
;
6216 struct nfs4_sequence_res
*res
= &calldata
->res
.seq_res
;
6218 dprintk("--> %s\n", __func__
);
6219 if (!nfs41_sequence_done(task
, res
))
6222 if (nfs41_reclaim_complete_handle_errors(task
, clp
) == -EAGAIN
) {
6223 rpc_restart_call_prepare(task
);
6226 dprintk("<-- %s\n", __func__
);
6229 static void nfs4_free_reclaim_complete_data(void *data
)
6231 struct nfs4_reclaim_complete_data
*calldata
= data
;
6236 static const struct rpc_call_ops nfs4_reclaim_complete_call_ops
= {
6237 .rpc_call_prepare
= nfs4_reclaim_complete_prepare
,
6238 .rpc_call_done
= nfs4_reclaim_complete_done
,
6239 .rpc_release
= nfs4_free_reclaim_complete_data
,
6243 * Issue a global reclaim complete.
6245 static int nfs41_proc_reclaim_complete(struct nfs_client
*clp
)
6247 struct nfs4_reclaim_complete_data
*calldata
;
6248 struct rpc_task
*task
;
6249 struct rpc_message msg
= {
6250 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RECLAIM_COMPLETE
],
6252 struct rpc_task_setup task_setup_data
= {
6253 .rpc_client
= clp
->cl_rpcclient
,
6254 .rpc_message
= &msg
,
6255 .callback_ops
= &nfs4_reclaim_complete_call_ops
,
6256 .flags
= RPC_TASK_ASYNC
,
6258 int status
= -ENOMEM
;
6260 dprintk("--> %s\n", __func__
);
6261 calldata
= kzalloc(sizeof(*calldata
), GFP_NOFS
);
6262 if (calldata
== NULL
)
6264 calldata
->clp
= clp
;
6265 calldata
->arg
.one_fs
= 0;
6267 nfs41_init_sequence(&calldata
->arg
.seq_args
, &calldata
->res
.seq_res
, 0);
6268 nfs4_set_sequence_privileged(&calldata
->arg
.seq_args
);
6269 msg
.rpc_argp
= &calldata
->arg
;
6270 msg
.rpc_resp
= &calldata
->res
;
6271 task_setup_data
.callback_data
= calldata
;
6272 task
= rpc_run_task(&task_setup_data
);
6274 status
= PTR_ERR(task
);
6277 status
= nfs4_wait_for_completion_rpc_task(task
);
6279 status
= task
->tk_status
;
6283 dprintk("<-- %s status=%d\n", __func__
, status
);
6288 nfs4_layoutget_prepare(struct rpc_task
*task
, void *calldata
)
6290 struct nfs4_layoutget
*lgp
= calldata
;
6291 struct nfs_server
*server
= NFS_SERVER(lgp
->args
.inode
);
6292 struct nfs4_session
*session
= nfs4_get_session(server
);
6294 dprintk("--> %s\n", __func__
);
6295 /* Note the is a race here, where a CB_LAYOUTRECALL can come in
6296 * right now covering the LAYOUTGET we are about to send.
6297 * However, that is not so catastrophic, and there seems
6298 * to be no way to prevent it completely.
6300 if (nfs41_setup_sequence(session
, &lgp
->args
.seq_args
,
6301 &lgp
->res
.seq_res
, task
))
6303 if (pnfs_choose_layoutget_stateid(&lgp
->args
.stateid
,
6304 NFS_I(lgp
->args
.inode
)->layout
,
6305 lgp
->args
.ctx
->state
)) {
6306 rpc_exit(task
, NFS4_OK
);
6310 static void nfs4_layoutget_done(struct rpc_task
*task
, void *calldata
)
6312 struct nfs4_layoutget
*lgp
= calldata
;
6313 struct inode
*inode
= lgp
->args
.inode
;
6314 struct nfs_server
*server
= NFS_SERVER(inode
);
6315 struct pnfs_layout_hdr
*lo
;
6316 struct nfs4_state
*state
= NULL
;
6317 unsigned long timeo
, giveup
;
6319 dprintk("--> %s\n", __func__
);
6321 if (!nfs41_sequence_done(task
, &lgp
->res
.seq_res
))
6324 switch (task
->tk_status
) {
6327 case -NFS4ERR_LAYOUTTRYLATER
:
6328 case -NFS4ERR_RECALLCONFLICT
:
6329 timeo
= rpc_get_timeout(task
->tk_client
);
6330 giveup
= lgp
->args
.timestamp
+ timeo
;
6331 if (time_after(giveup
, jiffies
))
6332 task
->tk_status
= -NFS4ERR_DELAY
;
6334 case -NFS4ERR_EXPIRED
:
6335 case -NFS4ERR_BAD_STATEID
:
6336 spin_lock(&inode
->i_lock
);
6337 lo
= NFS_I(inode
)->layout
;
6338 if (!lo
|| list_empty(&lo
->plh_segs
)) {
6339 spin_unlock(&inode
->i_lock
);
6340 /* If the open stateid was bad, then recover it. */
6341 state
= lgp
->args
.ctx
->state
;
6345 pnfs_mark_matching_lsegs_invalid(lo
, &head
, NULL
);
6346 spin_unlock(&inode
->i_lock
);
6347 /* Mark the bad layout state as invalid, then
6348 * retry using the open stateid. */
6349 pnfs_free_lseg_list(&head
);
6352 if (nfs4_async_handle_error(task
, server
, state
) == -EAGAIN
)
6353 rpc_restart_call_prepare(task
);
6355 dprintk("<-- %s\n", __func__
);
6358 static size_t max_response_pages(struct nfs_server
*server
)
6360 u32 max_resp_sz
= server
->nfs_client
->cl_session
->fc_attrs
.max_resp_sz
;
6361 return nfs_page_array_len(0, max_resp_sz
);
6364 static void nfs4_free_pages(struct page
**pages
, size_t size
)
6371 for (i
= 0; i
< size
; i
++) {
6374 __free_page(pages
[i
]);
6379 static struct page
**nfs4_alloc_pages(size_t size
, gfp_t gfp_flags
)
6381 struct page
**pages
;
6384 pages
= kcalloc(size
, sizeof(struct page
*), gfp_flags
);
6386 dprintk("%s: can't alloc array of %zu pages\n", __func__
, size
);
6390 for (i
= 0; i
< size
; i
++) {
6391 pages
[i
] = alloc_page(gfp_flags
);
6393 dprintk("%s: failed to allocate page\n", __func__
);
6394 nfs4_free_pages(pages
, size
);
6402 static void nfs4_layoutget_release(void *calldata
)
6404 struct nfs4_layoutget
*lgp
= calldata
;
6405 struct inode
*inode
= lgp
->args
.inode
;
6406 struct nfs_server
*server
= NFS_SERVER(inode
);
6407 size_t max_pages
= max_response_pages(server
);
6409 dprintk("--> %s\n", __func__
);
6410 nfs4_free_pages(lgp
->args
.layout
.pages
, max_pages
);
6411 pnfs_put_layout_hdr(NFS_I(inode
)->layout
);
6412 put_nfs_open_context(lgp
->args
.ctx
);
6414 dprintk("<-- %s\n", __func__
);
6417 static const struct rpc_call_ops nfs4_layoutget_call_ops
= {
6418 .rpc_call_prepare
= nfs4_layoutget_prepare
,
6419 .rpc_call_done
= nfs4_layoutget_done
,
6420 .rpc_release
= nfs4_layoutget_release
,
6423 struct pnfs_layout_segment
*
6424 nfs4_proc_layoutget(struct nfs4_layoutget
*lgp
, gfp_t gfp_flags
)
6426 struct inode
*inode
= lgp
->args
.inode
;
6427 struct nfs_server
*server
= NFS_SERVER(inode
);
6428 size_t max_pages
= max_response_pages(server
);
6429 struct rpc_task
*task
;
6430 struct rpc_message msg
= {
6431 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LAYOUTGET
],
6432 .rpc_argp
= &lgp
->args
,
6433 .rpc_resp
= &lgp
->res
,
6435 struct rpc_task_setup task_setup_data
= {
6436 .rpc_client
= server
->client
,
6437 .rpc_message
= &msg
,
6438 .callback_ops
= &nfs4_layoutget_call_ops
,
6439 .callback_data
= lgp
,
6440 .flags
= RPC_TASK_ASYNC
,
6442 struct pnfs_layout_segment
*lseg
= NULL
;
6445 dprintk("--> %s\n", __func__
);
6447 lgp
->args
.layout
.pages
= nfs4_alloc_pages(max_pages
, gfp_flags
);
6448 if (!lgp
->args
.layout
.pages
) {
6449 nfs4_layoutget_release(lgp
);
6450 return ERR_PTR(-ENOMEM
);
6452 lgp
->args
.layout
.pglen
= max_pages
* PAGE_SIZE
;
6453 lgp
->args
.timestamp
= jiffies
;
6455 lgp
->res
.layoutp
= &lgp
->args
.layout
;
6456 lgp
->res
.seq_res
.sr_slot
= NULL
;
6457 nfs41_init_sequence(&lgp
->args
.seq_args
, &lgp
->res
.seq_res
, 0);
6459 /* nfs4_layoutget_release calls pnfs_put_layout_hdr */
6460 pnfs_get_layout_hdr(NFS_I(inode
)->layout
);
6462 task
= rpc_run_task(&task_setup_data
);
6464 return ERR_CAST(task
);
6465 status
= nfs4_wait_for_completion_rpc_task(task
);
6467 status
= task
->tk_status
;
6468 /* if layoutp->len is 0, nfs4_layoutget_prepare called rpc_exit */
6469 if (status
== 0 && lgp
->res
.layoutp
->len
)
6470 lseg
= pnfs_layout_process(lgp
);
6472 dprintk("<-- %s status=%d\n", __func__
, status
);
6474 return ERR_PTR(status
);
6479 nfs4_layoutreturn_prepare(struct rpc_task
*task
, void *calldata
)
6481 struct nfs4_layoutreturn
*lrp
= calldata
;
6483 dprintk("--> %s\n", __func__
);
6484 nfs41_setup_sequence(lrp
->clp
->cl_session
,
6485 &lrp
->args
.seq_args
,
6490 static void nfs4_layoutreturn_done(struct rpc_task
*task
, void *calldata
)
6492 struct nfs4_layoutreturn
*lrp
= calldata
;
6493 struct nfs_server
*server
;
6495 dprintk("--> %s\n", __func__
);
6497 if (!nfs41_sequence_done(task
, &lrp
->res
.seq_res
))
6500 server
= NFS_SERVER(lrp
->args
.inode
);
6501 if (nfs4_async_handle_error(task
, server
, NULL
) == -EAGAIN
) {
6502 rpc_restart_call_prepare(task
);
6505 dprintk("<-- %s\n", __func__
);
6508 static void nfs4_layoutreturn_release(void *calldata
)
6510 struct nfs4_layoutreturn
*lrp
= calldata
;
6511 struct pnfs_layout_hdr
*lo
= lrp
->args
.layout
;
6513 dprintk("--> %s\n", __func__
);
6514 spin_lock(&lo
->plh_inode
->i_lock
);
6515 if (lrp
->res
.lrs_present
)
6516 pnfs_set_layout_stateid(lo
, &lrp
->res
.stateid
, true);
6517 lo
->plh_block_lgets
--;
6518 spin_unlock(&lo
->plh_inode
->i_lock
);
6519 pnfs_put_layout_hdr(lrp
->args
.layout
);
6521 dprintk("<-- %s\n", __func__
);
6524 static const struct rpc_call_ops nfs4_layoutreturn_call_ops
= {
6525 .rpc_call_prepare
= nfs4_layoutreturn_prepare
,
6526 .rpc_call_done
= nfs4_layoutreturn_done
,
6527 .rpc_release
= nfs4_layoutreturn_release
,
6530 int nfs4_proc_layoutreturn(struct nfs4_layoutreturn
*lrp
)
6532 struct rpc_task
*task
;
6533 struct rpc_message msg
= {
6534 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LAYOUTRETURN
],
6535 .rpc_argp
= &lrp
->args
,
6536 .rpc_resp
= &lrp
->res
,
6538 struct rpc_task_setup task_setup_data
= {
6539 .rpc_client
= lrp
->clp
->cl_rpcclient
,
6540 .rpc_message
= &msg
,
6541 .callback_ops
= &nfs4_layoutreturn_call_ops
,
6542 .callback_data
= lrp
,
6546 dprintk("--> %s\n", __func__
);
6547 nfs41_init_sequence(&lrp
->args
.seq_args
, &lrp
->res
.seq_res
, 1);
6548 task
= rpc_run_task(&task_setup_data
);
6550 return PTR_ERR(task
);
6551 status
= task
->tk_status
;
6552 dprintk("<-- %s status=%d\n", __func__
, status
);
6558 * Retrieve the list of Data Server devices from the MDS.
6560 static int _nfs4_getdevicelist(struct nfs_server
*server
,
6561 const struct nfs_fh
*fh
,
6562 struct pnfs_devicelist
*devlist
)
6564 struct nfs4_getdevicelist_args args
= {
6566 .layoutclass
= server
->pnfs_curr_ld
->id
,
6568 struct nfs4_getdevicelist_res res
= {
6571 struct rpc_message msg
= {
6572 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETDEVICELIST
],
6578 dprintk("--> %s\n", __func__
);
6579 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
,
6581 dprintk("<-- %s status=%d\n", __func__
, status
);
6585 int nfs4_proc_getdevicelist(struct nfs_server
*server
,
6586 const struct nfs_fh
*fh
,
6587 struct pnfs_devicelist
*devlist
)
6589 struct nfs4_exception exception
= { };
6593 err
= nfs4_handle_exception(server
,
6594 _nfs4_getdevicelist(server
, fh
, devlist
),
6596 } while (exception
.retry
);
6598 dprintk("%s: err=%d, num_devs=%u\n", __func__
,
6599 err
, devlist
->num_devs
);
6603 EXPORT_SYMBOL_GPL(nfs4_proc_getdevicelist
);
6606 _nfs4_proc_getdeviceinfo(struct nfs_server
*server
, struct pnfs_device
*pdev
)
6608 struct nfs4_getdeviceinfo_args args
= {
6611 struct nfs4_getdeviceinfo_res res
= {
6614 struct rpc_message msg
= {
6615 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETDEVICEINFO
],
6621 dprintk("--> %s\n", __func__
);
6622 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
6623 dprintk("<-- %s status=%d\n", __func__
, status
);
6628 int nfs4_proc_getdeviceinfo(struct nfs_server
*server
, struct pnfs_device
*pdev
)
6630 struct nfs4_exception exception
= { };
6634 err
= nfs4_handle_exception(server
,
6635 _nfs4_proc_getdeviceinfo(server
, pdev
),
6637 } while (exception
.retry
);
6640 EXPORT_SYMBOL_GPL(nfs4_proc_getdeviceinfo
);
6642 static void nfs4_layoutcommit_prepare(struct rpc_task
*task
, void *calldata
)
6644 struct nfs4_layoutcommit_data
*data
= calldata
;
6645 struct nfs_server
*server
= NFS_SERVER(data
->args
.inode
);
6646 struct nfs4_session
*session
= nfs4_get_session(server
);
6648 nfs41_setup_sequence(session
,
6649 &data
->args
.seq_args
,
6655 nfs4_layoutcommit_done(struct rpc_task
*task
, void *calldata
)
6657 struct nfs4_layoutcommit_data
*data
= calldata
;
6658 struct nfs_server
*server
= NFS_SERVER(data
->args
.inode
);
6660 if (!nfs41_sequence_done(task
, &data
->res
.seq_res
))
6663 switch (task
->tk_status
) { /* Just ignore these failures */
6664 case -NFS4ERR_DELEG_REVOKED
: /* layout was recalled */
6665 case -NFS4ERR_BADIOMODE
: /* no IOMODE_RW layout for range */
6666 case -NFS4ERR_BADLAYOUT
: /* no layout */
6667 case -NFS4ERR_GRACE
: /* loca_recalim always false */
6668 task
->tk_status
= 0;
6671 nfs_post_op_update_inode_force_wcc(data
->args
.inode
,
6675 if (nfs4_async_handle_error(task
, server
, NULL
) == -EAGAIN
) {
6676 rpc_restart_call_prepare(task
);
6682 static void nfs4_layoutcommit_release(void *calldata
)
6684 struct nfs4_layoutcommit_data
*data
= calldata
;
6686 pnfs_cleanup_layoutcommit(data
);
6687 put_rpccred(data
->cred
);
6691 static const struct rpc_call_ops nfs4_layoutcommit_ops
= {
6692 .rpc_call_prepare
= nfs4_layoutcommit_prepare
,
6693 .rpc_call_done
= nfs4_layoutcommit_done
,
6694 .rpc_release
= nfs4_layoutcommit_release
,
6698 nfs4_proc_layoutcommit(struct nfs4_layoutcommit_data
*data
, bool sync
)
6700 struct rpc_message msg
= {
6701 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LAYOUTCOMMIT
],
6702 .rpc_argp
= &data
->args
,
6703 .rpc_resp
= &data
->res
,
6704 .rpc_cred
= data
->cred
,
6706 struct rpc_task_setup task_setup_data
= {
6707 .task
= &data
->task
,
6708 .rpc_client
= NFS_CLIENT(data
->args
.inode
),
6709 .rpc_message
= &msg
,
6710 .callback_ops
= &nfs4_layoutcommit_ops
,
6711 .callback_data
= data
,
6712 .flags
= RPC_TASK_ASYNC
,
6714 struct rpc_task
*task
;
6717 dprintk("NFS: %4d initiating layoutcommit call. sync %d "
6718 "lbw: %llu inode %lu\n",
6719 data
->task
.tk_pid
, sync
,
6720 data
->args
.lastbytewritten
,
6721 data
->args
.inode
->i_ino
);
6723 nfs41_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
6724 task
= rpc_run_task(&task_setup_data
);
6726 return PTR_ERR(task
);
6729 status
= nfs4_wait_for_completion_rpc_task(task
);
6732 status
= task
->tk_status
;
6734 dprintk("%s: status %d\n", __func__
, status
);
6740 _nfs41_proc_secinfo_no_name(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
6741 struct nfs_fsinfo
*info
, struct nfs4_secinfo_flavors
*flavors
)
6743 struct nfs41_secinfo_no_name_args args
= {
6744 .style
= SECINFO_STYLE_CURRENT_FH
,
6746 struct nfs4_secinfo_res res
= {
6749 struct rpc_message msg
= {
6750 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SECINFO_NO_NAME
],
6754 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
6758 nfs41_proc_secinfo_no_name(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
6759 struct nfs_fsinfo
*info
, struct nfs4_secinfo_flavors
*flavors
)
6761 struct nfs4_exception exception
= { };
6764 err
= _nfs41_proc_secinfo_no_name(server
, fhandle
, info
, flavors
);
6767 case -NFS4ERR_WRONGSEC
:
6768 case -NFS4ERR_NOTSUPP
:
6771 err
= nfs4_handle_exception(server
, err
, &exception
);
6773 } while (exception
.retry
);
6779 nfs41_find_root_sec(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
6780 struct nfs_fsinfo
*info
)
6784 rpc_authflavor_t flavor
;
6785 struct nfs4_secinfo_flavors
*flavors
;
6787 page
= alloc_page(GFP_KERNEL
);
6793 flavors
= page_address(page
);
6794 err
= nfs41_proc_secinfo_no_name(server
, fhandle
, info
, flavors
);
6797 * Fall back on "guess and check" method if
6798 * the server doesn't support SECINFO_NO_NAME
6800 if (err
== -NFS4ERR_WRONGSEC
|| err
== -NFS4ERR_NOTSUPP
) {
6801 err
= nfs4_find_root_sec(server
, fhandle
, info
);
6807 flavor
= nfs_find_best_sec(flavors
);
6809 err
= nfs4_lookup_root_sec(server
, fhandle
, info
, flavor
);
6819 static int _nfs41_test_stateid(struct nfs_server
*server
, nfs4_stateid
*stateid
)
6822 struct nfs41_test_stateid_args args
= {
6825 struct nfs41_test_stateid_res res
;
6826 struct rpc_message msg
= {
6827 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_TEST_STATEID
],
6832 dprintk("NFS call test_stateid %p\n", stateid
);
6833 nfs41_init_sequence(&args
.seq_args
, &res
.seq_res
, 0);
6834 nfs4_set_sequence_privileged(&args
.seq_args
);
6835 status
= nfs4_call_sync_sequence(server
->client
, server
, &msg
,
6836 &args
.seq_args
, &res
.seq_res
);
6837 if (status
!= NFS_OK
) {
6838 dprintk("NFS reply test_stateid: failed, %d\n", status
);
6841 dprintk("NFS reply test_stateid: succeeded, %d\n", -res
.status
);
6846 * nfs41_test_stateid - perform a TEST_STATEID operation
6848 * @server: server / transport on which to perform the operation
6849 * @stateid: state ID to test
6851 * Returns NFS_OK if the server recognizes that "stateid" is valid.
6852 * Otherwise a negative NFS4ERR value is returned if the operation
6853 * failed or the state ID is not currently valid.
6855 static int nfs41_test_stateid(struct nfs_server
*server
, nfs4_stateid
*stateid
)
6857 struct nfs4_exception exception
= { };
6860 err
= _nfs41_test_stateid(server
, stateid
);
6861 if (err
!= -NFS4ERR_DELAY
)
6863 nfs4_handle_exception(server
, err
, &exception
);
6864 } while (exception
.retry
);
6868 struct nfs_free_stateid_data
{
6869 struct nfs_server
*server
;
6870 struct nfs41_free_stateid_args args
;
6871 struct nfs41_free_stateid_res res
;
6874 static void nfs41_free_stateid_prepare(struct rpc_task
*task
, void *calldata
)
6876 struct nfs_free_stateid_data
*data
= calldata
;
6877 nfs41_setup_sequence(nfs4_get_session(data
->server
),
6878 &data
->args
.seq_args
,
6883 static void nfs41_free_stateid_done(struct rpc_task
*task
, void *calldata
)
6885 struct nfs_free_stateid_data
*data
= calldata
;
6887 nfs41_sequence_done(task
, &data
->res
.seq_res
);
6889 switch (task
->tk_status
) {
6890 case -NFS4ERR_DELAY
:
6891 if (nfs4_async_handle_error(task
, data
->server
, NULL
) == -EAGAIN
)
6892 rpc_restart_call_prepare(task
);
6896 static void nfs41_free_stateid_release(void *calldata
)
6901 const struct rpc_call_ops nfs41_free_stateid_ops
= {
6902 .rpc_call_prepare
= nfs41_free_stateid_prepare
,
6903 .rpc_call_done
= nfs41_free_stateid_done
,
6904 .rpc_release
= nfs41_free_stateid_release
,
6907 static struct rpc_task
*_nfs41_free_stateid(struct nfs_server
*server
,
6908 nfs4_stateid
*stateid
,
6911 struct rpc_message msg
= {
6912 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FREE_STATEID
],
6914 struct rpc_task_setup task_setup
= {
6915 .rpc_client
= server
->client
,
6916 .rpc_message
= &msg
,
6917 .callback_ops
= &nfs41_free_stateid_ops
,
6918 .flags
= RPC_TASK_ASYNC
,
6920 struct nfs_free_stateid_data
*data
;
6922 dprintk("NFS call free_stateid %p\n", stateid
);
6923 data
= kmalloc(sizeof(*data
), GFP_NOFS
);
6925 return ERR_PTR(-ENOMEM
);
6926 data
->server
= server
;
6927 nfs4_stateid_copy(&data
->args
.stateid
, stateid
);
6929 task_setup
.callback_data
= data
;
6931 msg
.rpc_argp
= &data
->args
;
6932 msg
.rpc_resp
= &data
->res
;
6933 nfs41_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 0);
6935 nfs4_set_sequence_privileged(&data
->args
.seq_args
);
6937 return rpc_run_task(&task_setup
);
6941 * nfs41_free_stateid - perform a FREE_STATEID operation
6943 * @server: server / transport on which to perform the operation
6944 * @stateid: state ID to release
6946 * Returns NFS_OK if the server freed "stateid". Otherwise a
6947 * negative NFS4ERR value is returned.
6949 static int nfs41_free_stateid(struct nfs_server
*server
, nfs4_stateid
*stateid
)
6951 struct rpc_task
*task
;
6954 task
= _nfs41_free_stateid(server
, stateid
, true);
6956 return PTR_ERR(task
);
6957 ret
= rpc_wait_for_completion_task(task
);
6959 ret
= task
->tk_status
;
6964 static int nfs41_free_lock_state(struct nfs_server
*server
, struct nfs4_lock_state
*lsp
)
6966 struct rpc_task
*task
;
6968 task
= _nfs41_free_stateid(server
, &lsp
->ls_stateid
, false);
6969 nfs4_free_lock_state(server
, lsp
);
6971 return PTR_ERR(task
);
6976 static bool nfs41_match_stateid(const nfs4_stateid
*s1
,
6977 const nfs4_stateid
*s2
)
6979 if (memcmp(s1
->other
, s2
->other
, sizeof(s1
->other
)) != 0)
6982 if (s1
->seqid
== s2
->seqid
)
6984 if (s1
->seqid
== 0 || s2
->seqid
== 0)
6990 #endif /* CONFIG_NFS_V4_1 */
6992 static bool nfs4_match_stateid(const nfs4_stateid
*s1
,
6993 const nfs4_stateid
*s2
)
6995 return nfs4_stateid_match(s1
, s2
);
6999 static const struct nfs4_state_recovery_ops nfs40_reboot_recovery_ops
= {
7000 .owner_flag_bit
= NFS_OWNER_RECLAIM_REBOOT
,
7001 .state_flag_bit
= NFS_STATE_RECLAIM_REBOOT
,
7002 .recover_open
= nfs4_open_reclaim
,
7003 .recover_lock
= nfs4_lock_reclaim
,
7004 .establish_clid
= nfs4_init_clientid
,
7005 .get_clid_cred
= nfs4_get_setclientid_cred
,
7006 .detect_trunking
= nfs40_discover_server_trunking
,
7009 #if defined(CONFIG_NFS_V4_1)
7010 static const struct nfs4_state_recovery_ops nfs41_reboot_recovery_ops
= {
7011 .owner_flag_bit
= NFS_OWNER_RECLAIM_REBOOT
,
7012 .state_flag_bit
= NFS_STATE_RECLAIM_REBOOT
,
7013 .recover_open
= nfs4_open_reclaim
,
7014 .recover_lock
= nfs4_lock_reclaim
,
7015 .establish_clid
= nfs41_init_clientid
,
7016 .get_clid_cred
= nfs4_get_exchange_id_cred
,
7017 .reclaim_complete
= nfs41_proc_reclaim_complete
,
7018 .detect_trunking
= nfs41_discover_server_trunking
,
7020 #endif /* CONFIG_NFS_V4_1 */
7022 static const struct nfs4_state_recovery_ops nfs40_nograce_recovery_ops
= {
7023 .owner_flag_bit
= NFS_OWNER_RECLAIM_NOGRACE
,
7024 .state_flag_bit
= NFS_STATE_RECLAIM_NOGRACE
,
7025 .recover_open
= nfs4_open_expired
,
7026 .recover_lock
= nfs4_lock_expired
,
7027 .establish_clid
= nfs4_init_clientid
,
7028 .get_clid_cred
= nfs4_get_setclientid_cred
,
7031 #if defined(CONFIG_NFS_V4_1)
7032 static const struct nfs4_state_recovery_ops nfs41_nograce_recovery_ops
= {
7033 .owner_flag_bit
= NFS_OWNER_RECLAIM_NOGRACE
,
7034 .state_flag_bit
= NFS_STATE_RECLAIM_NOGRACE
,
7035 .recover_open
= nfs41_open_expired
,
7036 .recover_lock
= nfs41_lock_expired
,
7037 .establish_clid
= nfs41_init_clientid
,
7038 .get_clid_cred
= nfs4_get_exchange_id_cred
,
7040 #endif /* CONFIG_NFS_V4_1 */
7042 static const struct nfs4_state_maintenance_ops nfs40_state_renewal_ops
= {
7043 .sched_state_renewal
= nfs4_proc_async_renew
,
7044 .get_state_renewal_cred_locked
= nfs4_get_renew_cred_locked
,
7045 .renew_lease
= nfs4_proc_renew
,
7048 #if defined(CONFIG_NFS_V4_1)
7049 static const struct nfs4_state_maintenance_ops nfs41_state_renewal_ops
= {
7050 .sched_state_renewal
= nfs41_proc_async_sequence
,
7051 .get_state_renewal_cred_locked
= nfs4_get_machine_cred_locked
,
7052 .renew_lease
= nfs4_proc_sequence
,
7056 static const struct nfs4_minor_version_ops nfs_v4_0_minor_ops
= {
7058 .init_caps
= NFS_CAP_READDIRPLUS
7059 | NFS_CAP_ATOMIC_OPEN
7060 | NFS_CAP_CHANGE_ATTR
7061 | NFS_CAP_POSIX_LOCK
,
7062 .call_sync
= _nfs4_call_sync
,
7063 .match_stateid
= nfs4_match_stateid
,
7064 .find_root_sec
= nfs4_find_root_sec
,
7065 .free_lock_state
= nfs4_release_lockowner
,
7066 .reboot_recovery_ops
= &nfs40_reboot_recovery_ops
,
7067 .nograce_recovery_ops
= &nfs40_nograce_recovery_ops
,
7068 .state_renewal_ops
= &nfs40_state_renewal_ops
,
7071 #if defined(CONFIG_NFS_V4_1)
7072 static const struct nfs4_minor_version_ops nfs_v4_1_minor_ops
= {
7074 .init_caps
= NFS_CAP_READDIRPLUS
7075 | NFS_CAP_ATOMIC_OPEN
7076 | NFS_CAP_CHANGE_ATTR
7077 | NFS_CAP_POSIX_LOCK
7078 | NFS_CAP_STATEID_NFSV41
7079 | NFS_CAP_ATOMIC_OPEN_V1
,
7080 .call_sync
= nfs4_call_sync_sequence
,
7081 .match_stateid
= nfs41_match_stateid
,
7082 .find_root_sec
= nfs41_find_root_sec
,
7083 .free_lock_state
= nfs41_free_lock_state
,
7084 .reboot_recovery_ops
= &nfs41_reboot_recovery_ops
,
7085 .nograce_recovery_ops
= &nfs41_nograce_recovery_ops
,
7086 .state_renewal_ops
= &nfs41_state_renewal_ops
,
7090 #if defined(CONFIG_NFS_V4_2)
7091 static const struct nfs4_minor_version_ops nfs_v4_2_minor_ops
= {
7093 .call_sync
= nfs4_call_sync_sequence
,
7094 .match_stateid
= nfs41_match_stateid
,
7095 .find_root_sec
= nfs41_find_root_sec
,
7096 .reboot_recovery_ops
= &nfs41_reboot_recovery_ops
,
7097 .nograce_recovery_ops
= &nfs41_nograce_recovery_ops
,
7098 .state_renewal_ops
= &nfs41_state_renewal_ops
,
7102 const struct nfs4_minor_version_ops
*nfs_v4_minor_ops
[] = {
7103 [0] = &nfs_v4_0_minor_ops
,
7104 #if defined(CONFIG_NFS_V4_1)
7105 [1] = &nfs_v4_1_minor_ops
,
7107 #if defined(CONFIG_NFS_V4_2)
7108 [2] = &nfs_v4_2_minor_ops
,
7112 const struct inode_operations nfs4_dir_inode_operations
= {
7113 .create
= nfs_create
,
7114 .lookup
= nfs_lookup
,
7115 .atomic_open
= nfs_atomic_open
,
7117 .unlink
= nfs_unlink
,
7118 .symlink
= nfs_symlink
,
7122 .rename
= nfs_rename
,
7123 .permission
= nfs_permission
,
7124 .getattr
= nfs_getattr
,
7125 .setattr
= nfs_setattr
,
7126 .getxattr
= generic_getxattr
,
7127 .setxattr
= generic_setxattr
,
7128 .listxattr
= generic_listxattr
,
7129 .removexattr
= generic_removexattr
,
7132 static const struct inode_operations nfs4_file_inode_operations
= {
7133 .permission
= nfs_permission
,
7134 .getattr
= nfs_getattr
,
7135 .setattr
= nfs_setattr
,
7136 .getxattr
= generic_getxattr
,
7137 .setxattr
= generic_setxattr
,
7138 .listxattr
= generic_listxattr
,
7139 .removexattr
= generic_removexattr
,
7142 const struct nfs_rpc_ops nfs_v4_clientops
= {
7143 .version
= 4, /* protocol version */
7144 .dentry_ops
= &nfs4_dentry_operations
,
7145 .dir_inode_ops
= &nfs4_dir_inode_operations
,
7146 .file_inode_ops
= &nfs4_file_inode_operations
,
7147 .file_ops
= &nfs4_file_operations
,
7148 .getroot
= nfs4_proc_get_root
,
7149 .submount
= nfs4_submount
,
7150 .try_mount
= nfs4_try_mount
,
7151 .getattr
= nfs4_proc_getattr
,
7152 .setattr
= nfs4_proc_setattr
,
7153 .lookup
= nfs4_proc_lookup
,
7154 .access
= nfs4_proc_access
,
7155 .readlink
= nfs4_proc_readlink
,
7156 .create
= nfs4_proc_create
,
7157 .remove
= nfs4_proc_remove
,
7158 .unlink_setup
= nfs4_proc_unlink_setup
,
7159 .unlink_rpc_prepare
= nfs4_proc_unlink_rpc_prepare
,
7160 .unlink_done
= nfs4_proc_unlink_done
,
7161 .rename
= nfs4_proc_rename
,
7162 .rename_setup
= nfs4_proc_rename_setup
,
7163 .rename_rpc_prepare
= nfs4_proc_rename_rpc_prepare
,
7164 .rename_done
= nfs4_proc_rename_done
,
7165 .link
= nfs4_proc_link
,
7166 .symlink
= nfs4_proc_symlink
,
7167 .mkdir
= nfs4_proc_mkdir
,
7168 .rmdir
= nfs4_proc_remove
,
7169 .readdir
= nfs4_proc_readdir
,
7170 .mknod
= nfs4_proc_mknod
,
7171 .statfs
= nfs4_proc_statfs
,
7172 .fsinfo
= nfs4_proc_fsinfo
,
7173 .pathconf
= nfs4_proc_pathconf
,
7174 .set_capabilities
= nfs4_server_capabilities
,
7175 .decode_dirent
= nfs4_decode_dirent
,
7176 .read_setup
= nfs4_proc_read_setup
,
7177 .read_pageio_init
= pnfs_pageio_init_read
,
7178 .read_rpc_prepare
= nfs4_proc_read_rpc_prepare
,
7179 .read_done
= nfs4_read_done
,
7180 .write_setup
= nfs4_proc_write_setup
,
7181 .write_pageio_init
= pnfs_pageio_init_write
,
7182 .write_rpc_prepare
= nfs4_proc_write_rpc_prepare
,
7183 .write_done
= nfs4_write_done
,
7184 .commit_setup
= nfs4_proc_commit_setup
,
7185 .commit_rpc_prepare
= nfs4_proc_commit_rpc_prepare
,
7186 .commit_done
= nfs4_commit_done
,
7187 .lock
= nfs4_proc_lock
,
7188 .clear_acl_cache
= nfs4_zap_acl_attr
,
7189 .close_context
= nfs4_close_context
,
7190 .open_context
= nfs4_atomic_open
,
7191 .have_delegation
= nfs4_have_delegation
,
7192 .return_delegation
= nfs4_inode_return_delegation
,
7193 .alloc_client
= nfs4_alloc_client
,
7194 .init_client
= nfs4_init_client
,
7195 .free_client
= nfs4_free_client
,
7196 .create_server
= nfs4_create_server
,
7197 .clone_server
= nfs_clone_server
,
7200 static const struct xattr_handler nfs4_xattr_nfs4_acl_handler
= {
7201 .prefix
= XATTR_NAME_NFSV4_ACL
,
7202 .list
= nfs4_xattr_list_nfs4_acl
,
7203 .get
= nfs4_xattr_get_nfs4_acl
,
7204 .set
= nfs4_xattr_set_nfs4_acl
,
7207 const struct xattr_handler
*nfs4_xattr_handlers
[] = {
7208 &nfs4_xattr_nfs4_acl_handler
,