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
);
836 p
->o_arg
.seqid
= nfs_alloc_seqid(&sp
->so_seqid
, gfp_mask
);
837 if (p
->o_arg
.seqid
== NULL
)
839 nfs_sb_active(dentry
->d_sb
);
840 p
->dentry
= dget(dentry
);
843 atomic_inc(&sp
->so_count
);
844 p
->o_arg
.open_flags
= flags
;
845 p
->o_arg
.fmode
= fmode
& (FMODE_READ
|FMODE_WRITE
);
846 /* don't put an ACCESS op in OPEN compound if O_EXCL, because ACCESS
847 * will return permission denied for all bits until close */
848 if (!(flags
& O_EXCL
)) {
849 /* ask server to check for all possible rights as results
851 p
->o_arg
.access
= NFS4_ACCESS_READ
| NFS4_ACCESS_MODIFY
|
852 NFS4_ACCESS_EXTEND
| NFS4_ACCESS_EXECUTE
;
854 p
->o_arg
.clientid
= server
->nfs_client
->cl_clientid
;
855 p
->o_arg
.id
.create_time
= ktime_to_ns(sp
->so_seqid
.create_time
);
856 p
->o_arg
.id
.uniquifier
= sp
->so_seqid
.owner_id
;
857 p
->o_arg
.name
= &dentry
->d_name
;
858 p
->o_arg
.server
= server
;
859 p
->o_arg
.bitmask
= server
->attr_bitmask
;
860 p
->o_arg
.open_bitmap
= &nfs4_fattr_bitmap
[0];
861 p
->o_arg
.label
= label
;
862 p
->o_arg
.claim
= nfs4_map_atomic_open_claim(server
, claim
);
863 switch (p
->o_arg
.claim
) {
864 case NFS4_OPEN_CLAIM_NULL
:
865 case NFS4_OPEN_CLAIM_DELEGATE_CUR
:
866 case NFS4_OPEN_CLAIM_DELEGATE_PREV
:
867 p
->o_arg
.fh
= NFS_FH(dir
);
869 case NFS4_OPEN_CLAIM_PREVIOUS
:
870 case NFS4_OPEN_CLAIM_FH
:
871 case NFS4_OPEN_CLAIM_DELEG_CUR_FH
:
872 case NFS4_OPEN_CLAIM_DELEG_PREV_FH
:
873 p
->o_arg
.fh
= NFS_FH(dentry
->d_inode
);
875 if (attrs
!= NULL
&& attrs
->ia_valid
!= 0) {
878 p
->o_arg
.u
.attrs
= &p
->attrs
;
879 memcpy(&p
->attrs
, attrs
, sizeof(p
->attrs
));
882 verf
[1] = current
->pid
;
883 memcpy(p
->o_arg
.u
.verifier
.data
, verf
,
884 sizeof(p
->o_arg
.u
.verifier
.data
));
886 p
->c_arg
.fh
= &p
->o_res
.fh
;
887 p
->c_arg
.stateid
= &p
->o_res
.stateid
;
888 p
->c_arg
.seqid
= p
->o_arg
.seqid
;
889 nfs4_init_opendata_res(p
);
899 static void nfs4_opendata_free(struct kref
*kref
)
901 struct nfs4_opendata
*p
= container_of(kref
,
902 struct nfs4_opendata
, kref
);
903 struct super_block
*sb
= p
->dentry
->d_sb
;
905 nfs_free_seqid(p
->o_arg
.seqid
);
906 if (p
->state
!= NULL
)
907 nfs4_put_open_state(p
->state
);
908 nfs4_put_state_owner(p
->owner
);
912 nfs_fattr_free_names(&p
->f_attr
);
916 static void nfs4_opendata_put(struct nfs4_opendata
*p
)
919 kref_put(&p
->kref
, nfs4_opendata_free
);
922 static int nfs4_wait_for_completion_rpc_task(struct rpc_task
*task
)
926 ret
= rpc_wait_for_completion_task(task
);
930 static int can_open_cached(struct nfs4_state
*state
, fmode_t mode
, int open_mode
)
934 if (open_mode
& (O_EXCL
|O_TRUNC
))
936 switch (mode
& (FMODE_READ
|FMODE_WRITE
)) {
938 ret
|= test_bit(NFS_O_RDONLY_STATE
, &state
->flags
) != 0
939 && state
->n_rdonly
!= 0;
942 ret
|= test_bit(NFS_O_WRONLY_STATE
, &state
->flags
) != 0
943 && state
->n_wronly
!= 0;
945 case FMODE_READ
|FMODE_WRITE
:
946 ret
|= test_bit(NFS_O_RDWR_STATE
, &state
->flags
) != 0
947 && state
->n_rdwr
!= 0;
953 static int can_open_delegated(struct nfs_delegation
*delegation
, fmode_t fmode
)
955 if (delegation
== NULL
)
957 if ((delegation
->type
& fmode
) != fmode
)
959 if (test_bit(NFS_DELEGATION_NEED_RECLAIM
, &delegation
->flags
))
961 if (test_bit(NFS_DELEGATION_RETURNING
, &delegation
->flags
))
963 nfs_mark_delegation_referenced(delegation
);
967 static void update_open_stateflags(struct nfs4_state
*state
, fmode_t fmode
)
976 case FMODE_READ
|FMODE_WRITE
:
979 nfs4_state_set_mode_locked(state
, state
->state
| fmode
);
982 static void nfs_set_open_stateid_locked(struct nfs4_state
*state
, nfs4_stateid
*stateid
, fmode_t fmode
)
984 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0)
985 nfs4_stateid_copy(&state
->stateid
, stateid
);
986 nfs4_stateid_copy(&state
->open_stateid
, stateid
);
987 set_bit(NFS_OPEN_STATE
, &state
->flags
);
990 set_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
993 set_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
995 case FMODE_READ
|FMODE_WRITE
:
996 set_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1000 static void nfs_set_open_stateid(struct nfs4_state
*state
, nfs4_stateid
*stateid
, fmode_t fmode
)
1002 write_seqlock(&state
->seqlock
);
1003 nfs_set_open_stateid_locked(state
, stateid
, fmode
);
1004 write_sequnlock(&state
->seqlock
);
1007 static void __update_open_stateid(struct nfs4_state
*state
, nfs4_stateid
*open_stateid
, const nfs4_stateid
*deleg_stateid
, fmode_t fmode
)
1010 * Protect the call to nfs4_state_set_mode_locked and
1011 * serialise the stateid update
1013 write_seqlock(&state
->seqlock
);
1014 if (deleg_stateid
!= NULL
) {
1015 nfs4_stateid_copy(&state
->stateid
, deleg_stateid
);
1016 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1018 if (open_stateid
!= NULL
)
1019 nfs_set_open_stateid_locked(state
, open_stateid
, fmode
);
1020 write_sequnlock(&state
->seqlock
);
1021 spin_lock(&state
->owner
->so_lock
);
1022 update_open_stateflags(state
, fmode
);
1023 spin_unlock(&state
->owner
->so_lock
);
1026 static int update_open_stateid(struct nfs4_state
*state
, nfs4_stateid
*open_stateid
, nfs4_stateid
*delegation
, fmode_t fmode
)
1028 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
1029 struct nfs_delegation
*deleg_cur
;
1032 fmode
&= (FMODE_READ
|FMODE_WRITE
);
1035 deleg_cur
= rcu_dereference(nfsi
->delegation
);
1036 if (deleg_cur
== NULL
)
1039 spin_lock(&deleg_cur
->lock
);
1040 if (nfsi
->delegation
!= deleg_cur
||
1041 test_bit(NFS_DELEGATION_RETURNING
, &deleg_cur
->flags
) ||
1042 (deleg_cur
->type
& fmode
) != fmode
)
1043 goto no_delegation_unlock
;
1045 if (delegation
== NULL
)
1046 delegation
= &deleg_cur
->stateid
;
1047 else if (!nfs4_stateid_match(&deleg_cur
->stateid
, delegation
))
1048 goto no_delegation_unlock
;
1050 nfs_mark_delegation_referenced(deleg_cur
);
1051 __update_open_stateid(state
, open_stateid
, &deleg_cur
->stateid
, fmode
);
1053 no_delegation_unlock
:
1054 spin_unlock(&deleg_cur
->lock
);
1058 if (!ret
&& open_stateid
!= NULL
) {
1059 __update_open_stateid(state
, open_stateid
, NULL
, fmode
);
1067 static void nfs4_return_incompatible_delegation(struct inode
*inode
, fmode_t fmode
)
1069 struct nfs_delegation
*delegation
;
1072 delegation
= rcu_dereference(NFS_I(inode
)->delegation
);
1073 if (delegation
== NULL
|| (delegation
->type
& fmode
) == fmode
) {
1078 nfs4_inode_return_delegation(inode
);
1081 static struct nfs4_state
*nfs4_try_open_cached(struct nfs4_opendata
*opendata
)
1083 struct nfs4_state
*state
= opendata
->state
;
1084 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
1085 struct nfs_delegation
*delegation
;
1086 int open_mode
= opendata
->o_arg
.open_flags
& (O_EXCL
|O_TRUNC
);
1087 fmode_t fmode
= opendata
->o_arg
.fmode
;
1088 nfs4_stateid stateid
;
1092 if (can_open_cached(state
, fmode
, open_mode
)) {
1093 spin_lock(&state
->owner
->so_lock
);
1094 if (can_open_cached(state
, fmode
, open_mode
)) {
1095 update_open_stateflags(state
, fmode
);
1096 spin_unlock(&state
->owner
->so_lock
);
1097 goto out_return_state
;
1099 spin_unlock(&state
->owner
->so_lock
);
1102 delegation
= rcu_dereference(nfsi
->delegation
);
1103 if (!can_open_delegated(delegation
, fmode
)) {
1107 /* Save the delegation */
1108 nfs4_stateid_copy(&stateid
, &delegation
->stateid
);
1110 nfs_release_seqid(opendata
->o_arg
.seqid
);
1111 if (!opendata
->is_recover
) {
1112 ret
= nfs_may_open(state
->inode
, state
->owner
->so_cred
, open_mode
);
1118 /* Try to update the stateid using the delegation */
1119 if (update_open_stateid(state
, NULL
, &stateid
, fmode
))
1120 goto out_return_state
;
1123 return ERR_PTR(ret
);
1125 atomic_inc(&state
->count
);
1130 nfs4_opendata_check_deleg(struct nfs4_opendata
*data
, struct nfs4_state
*state
)
1132 struct nfs_client
*clp
= NFS_SERVER(state
->inode
)->nfs_client
;
1133 struct nfs_delegation
*delegation
;
1134 int delegation_flags
= 0;
1137 delegation
= rcu_dereference(NFS_I(state
->inode
)->delegation
);
1139 delegation_flags
= delegation
->flags
;
1141 if (data
->o_arg
.claim
== NFS4_OPEN_CLAIM_DELEGATE_CUR
) {
1142 pr_err_ratelimited("NFS: Broken NFSv4 server %s is "
1143 "returning a delegation for "
1144 "OPEN(CLAIM_DELEGATE_CUR)\n",
1146 } else if ((delegation_flags
& 1UL<<NFS_DELEGATION_NEED_RECLAIM
) == 0)
1147 nfs_inode_set_delegation(state
->inode
,
1148 data
->owner
->so_cred
,
1151 nfs_inode_reclaim_delegation(state
->inode
,
1152 data
->owner
->so_cred
,
1157 * Check the inode attributes against the CLAIM_PREVIOUS returned attributes
1158 * and update the nfs4_state.
1160 static struct nfs4_state
*
1161 _nfs4_opendata_reclaim_to_nfs4_state(struct nfs4_opendata
*data
)
1163 struct inode
*inode
= data
->state
->inode
;
1164 struct nfs4_state
*state
= data
->state
;
1167 if (!data
->rpc_done
) {
1168 ret
= data
->rpc_status
;
1173 if (!(data
->f_attr
.valid
& NFS_ATTR_FATTR_TYPE
) ||
1174 !(data
->f_attr
.valid
& NFS_ATTR_FATTR_FILEID
) ||
1175 !(data
->f_attr
.valid
& NFS_ATTR_FATTR_CHANGE
))
1179 state
= nfs4_get_open_state(inode
, data
->owner
);
1183 ret
= nfs_refresh_inode(inode
, &data
->f_attr
);
1187 if (data
->o_res
.delegation_type
!= 0)
1188 nfs4_opendata_check_deleg(data
, state
);
1189 update_open_stateid(state
, &data
->o_res
.stateid
, NULL
,
1194 return ERR_PTR(ret
);
1198 static struct nfs4_state
*
1199 _nfs4_opendata_to_nfs4_state(struct nfs4_opendata
*data
)
1201 struct inode
*inode
;
1202 struct nfs4_state
*state
= NULL
;
1205 if (!data
->rpc_done
) {
1206 state
= nfs4_try_open_cached(data
);
1211 if (!(data
->f_attr
.valid
& NFS_ATTR_FATTR
))
1213 inode
= nfs_fhget(data
->dir
->d_sb
, &data
->o_res
.fh
, &data
->f_attr
, data
->f_label
);
1214 ret
= PTR_ERR(inode
);
1218 state
= nfs4_get_open_state(inode
, data
->owner
);
1221 if (data
->o_res
.delegation_type
!= 0)
1222 nfs4_opendata_check_deleg(data
, state
);
1223 update_open_stateid(state
, &data
->o_res
.stateid
, NULL
,
1227 nfs_release_seqid(data
->o_arg
.seqid
);
1232 return ERR_PTR(ret
);
1235 static struct nfs4_state
*
1236 nfs4_opendata_to_nfs4_state(struct nfs4_opendata
*data
)
1238 if (data
->o_arg
.claim
== NFS4_OPEN_CLAIM_PREVIOUS
)
1239 return _nfs4_opendata_reclaim_to_nfs4_state(data
);
1240 return _nfs4_opendata_to_nfs4_state(data
);
1243 static struct nfs_open_context
*nfs4_state_find_open_context(struct nfs4_state
*state
)
1245 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
1246 struct nfs_open_context
*ctx
;
1248 spin_lock(&state
->inode
->i_lock
);
1249 list_for_each_entry(ctx
, &nfsi
->open_files
, list
) {
1250 if (ctx
->state
!= state
)
1252 get_nfs_open_context(ctx
);
1253 spin_unlock(&state
->inode
->i_lock
);
1256 spin_unlock(&state
->inode
->i_lock
);
1257 return ERR_PTR(-ENOENT
);
1260 static struct nfs4_opendata
*nfs4_open_recoverdata_alloc(struct nfs_open_context
*ctx
,
1261 struct nfs4_state
*state
, enum open_claim_type4 claim
)
1263 struct nfs4_opendata
*opendata
;
1265 opendata
= nfs4_opendata_alloc(ctx
->dentry
, state
->owner
, 0, 0,
1266 NULL
, NULL
, claim
, GFP_NOFS
);
1267 if (opendata
== NULL
)
1268 return ERR_PTR(-ENOMEM
);
1269 opendata
->state
= state
;
1270 atomic_inc(&state
->count
);
1274 static int nfs4_open_recover_helper(struct nfs4_opendata
*opendata
, fmode_t fmode
, struct nfs4_state
**res
)
1276 struct nfs4_state
*newstate
;
1279 opendata
->o_arg
.open_flags
= 0;
1280 opendata
->o_arg
.fmode
= fmode
;
1281 memset(&opendata
->o_res
, 0, sizeof(opendata
->o_res
));
1282 memset(&opendata
->c_res
, 0, sizeof(opendata
->c_res
));
1283 nfs4_init_opendata_res(opendata
);
1284 ret
= _nfs4_recover_proc_open(opendata
);
1287 newstate
= nfs4_opendata_to_nfs4_state(opendata
);
1288 if (IS_ERR(newstate
))
1289 return PTR_ERR(newstate
);
1290 nfs4_close_state(newstate
, fmode
);
1295 static int nfs4_open_recover(struct nfs4_opendata
*opendata
, struct nfs4_state
*state
)
1297 struct nfs4_state
*newstate
;
1300 /* memory barrier prior to reading state->n_* */
1301 clear_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1302 clear_bit(NFS_OPEN_STATE
, &state
->flags
);
1304 if (state
->n_rdwr
!= 0) {
1305 clear_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1306 ret
= nfs4_open_recover_helper(opendata
, FMODE_READ
|FMODE_WRITE
, &newstate
);
1309 if (newstate
!= state
)
1312 if (state
->n_wronly
!= 0) {
1313 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1314 ret
= nfs4_open_recover_helper(opendata
, FMODE_WRITE
, &newstate
);
1317 if (newstate
!= state
)
1320 if (state
->n_rdonly
!= 0) {
1321 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1322 ret
= nfs4_open_recover_helper(opendata
, FMODE_READ
, &newstate
);
1325 if (newstate
!= state
)
1329 * We may have performed cached opens for all three recoveries.
1330 * Check if we need to update the current stateid.
1332 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0 &&
1333 !nfs4_stateid_match(&state
->stateid
, &state
->open_stateid
)) {
1334 write_seqlock(&state
->seqlock
);
1335 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0)
1336 nfs4_stateid_copy(&state
->stateid
, &state
->open_stateid
);
1337 write_sequnlock(&state
->seqlock
);
1344 * reclaim state on the server after a reboot.
1346 static int _nfs4_do_open_reclaim(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1348 struct nfs_delegation
*delegation
;
1349 struct nfs4_opendata
*opendata
;
1350 fmode_t delegation_type
= 0;
1353 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
,
1354 NFS4_OPEN_CLAIM_PREVIOUS
);
1355 if (IS_ERR(opendata
))
1356 return PTR_ERR(opendata
);
1358 delegation
= rcu_dereference(NFS_I(state
->inode
)->delegation
);
1359 if (delegation
!= NULL
&& test_bit(NFS_DELEGATION_NEED_RECLAIM
, &delegation
->flags
) != 0)
1360 delegation_type
= delegation
->type
;
1362 opendata
->o_arg
.u
.delegation_type
= delegation_type
;
1363 status
= nfs4_open_recover(opendata
, state
);
1364 nfs4_opendata_put(opendata
);
1368 static int nfs4_do_open_reclaim(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1370 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1371 struct nfs4_exception exception
= { };
1374 err
= _nfs4_do_open_reclaim(ctx
, state
);
1375 if (nfs4_clear_cap_atomic_open_v1(server
, err
, &exception
))
1377 if (err
!= -NFS4ERR_DELAY
)
1379 nfs4_handle_exception(server
, err
, &exception
);
1380 } while (exception
.retry
);
1384 static int nfs4_open_reclaim(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
1386 struct nfs_open_context
*ctx
;
1389 ctx
= nfs4_state_find_open_context(state
);
1392 ret
= nfs4_do_open_reclaim(ctx
, state
);
1393 put_nfs_open_context(ctx
);
1397 static int nfs4_handle_delegation_recall_error(struct nfs_server
*server
, struct nfs4_state
*state
, const nfs4_stateid
*stateid
, int err
)
1401 printk(KERN_ERR
"NFS: %s: unhandled error "
1402 "%d.\n", __func__
, err
);
1407 case -NFS4ERR_BADSESSION
:
1408 case -NFS4ERR_BADSLOT
:
1409 case -NFS4ERR_BAD_HIGH_SLOT
:
1410 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
1411 case -NFS4ERR_DEADSESSION
:
1412 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1413 nfs4_schedule_session_recovery(server
->nfs_client
->cl_session
, err
);
1415 case -NFS4ERR_STALE_CLIENTID
:
1416 case -NFS4ERR_STALE_STATEID
:
1417 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1418 case -NFS4ERR_EXPIRED
:
1419 /* Don't recall a delegation if it was lost */
1420 nfs4_schedule_lease_recovery(server
->nfs_client
);
1422 case -NFS4ERR_DELEG_REVOKED
:
1423 case -NFS4ERR_ADMIN_REVOKED
:
1424 case -NFS4ERR_BAD_STATEID
:
1425 case -NFS4ERR_OPENMODE
:
1426 nfs_inode_find_state_and_recover(state
->inode
,
1428 nfs4_schedule_stateid_recovery(server
, state
);
1430 case -NFS4ERR_DELAY
:
1431 case -NFS4ERR_GRACE
:
1432 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1436 case -NFS4ERR_DENIED
:
1437 /* kill_proc(fl->fl_pid, SIGLOST, 1); */
1443 int nfs4_open_delegation_recall(struct nfs_open_context
*ctx
, struct nfs4_state
*state
, const nfs4_stateid
*stateid
)
1445 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1446 struct nfs4_opendata
*opendata
;
1449 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
,
1450 NFS4_OPEN_CLAIM_DELEG_CUR_FH
);
1451 if (IS_ERR(opendata
))
1452 return PTR_ERR(opendata
);
1453 nfs4_stateid_copy(&opendata
->o_arg
.u
.delegation
, stateid
);
1454 err
= nfs4_open_recover(opendata
, state
);
1455 nfs4_opendata_put(opendata
);
1456 return nfs4_handle_delegation_recall_error(server
, state
, stateid
, err
);
1459 static void nfs4_open_confirm_done(struct rpc_task
*task
, void *calldata
)
1461 struct nfs4_opendata
*data
= calldata
;
1463 data
->rpc_status
= task
->tk_status
;
1464 if (data
->rpc_status
== 0) {
1465 nfs4_stateid_copy(&data
->o_res
.stateid
, &data
->c_res
.stateid
);
1466 nfs_confirm_seqid(&data
->owner
->so_seqid
, 0);
1467 renew_lease(data
->o_res
.server
, data
->timestamp
);
1472 static void nfs4_open_confirm_release(void *calldata
)
1474 struct nfs4_opendata
*data
= calldata
;
1475 struct nfs4_state
*state
= NULL
;
1477 /* If this request hasn't been cancelled, do nothing */
1478 if (data
->cancelled
== 0)
1480 /* In case of error, no cleanup! */
1481 if (!data
->rpc_done
)
1483 state
= nfs4_opendata_to_nfs4_state(data
);
1485 nfs4_close_state(state
, data
->o_arg
.fmode
);
1487 nfs4_opendata_put(data
);
1490 static const struct rpc_call_ops nfs4_open_confirm_ops
= {
1491 .rpc_call_done
= nfs4_open_confirm_done
,
1492 .rpc_release
= nfs4_open_confirm_release
,
1496 * Note: On error, nfs4_proc_open_confirm will free the struct nfs4_opendata
1498 static int _nfs4_proc_open_confirm(struct nfs4_opendata
*data
)
1500 struct nfs_server
*server
= NFS_SERVER(data
->dir
->d_inode
);
1501 struct rpc_task
*task
;
1502 struct rpc_message msg
= {
1503 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_CONFIRM
],
1504 .rpc_argp
= &data
->c_arg
,
1505 .rpc_resp
= &data
->c_res
,
1506 .rpc_cred
= data
->owner
->so_cred
,
1508 struct rpc_task_setup task_setup_data
= {
1509 .rpc_client
= server
->client
,
1510 .rpc_message
= &msg
,
1511 .callback_ops
= &nfs4_open_confirm_ops
,
1512 .callback_data
= data
,
1513 .workqueue
= nfsiod_workqueue
,
1514 .flags
= RPC_TASK_ASYNC
,
1518 kref_get(&data
->kref
);
1520 data
->rpc_status
= 0;
1521 data
->timestamp
= jiffies
;
1522 task
= rpc_run_task(&task_setup_data
);
1524 return PTR_ERR(task
);
1525 status
= nfs4_wait_for_completion_rpc_task(task
);
1527 data
->cancelled
= 1;
1530 status
= data
->rpc_status
;
1535 static void nfs4_open_prepare(struct rpc_task
*task
, void *calldata
)
1537 struct nfs4_opendata
*data
= calldata
;
1538 struct nfs4_state_owner
*sp
= data
->owner
;
1539 struct nfs_client
*clp
= sp
->so_server
->nfs_client
;
1541 if (nfs_wait_on_sequence(data
->o_arg
.seqid
, task
) != 0)
1544 * Check if we still need to send an OPEN call, or if we can use
1545 * a delegation instead.
1547 if (data
->state
!= NULL
) {
1548 struct nfs_delegation
*delegation
;
1550 if (can_open_cached(data
->state
, data
->o_arg
.fmode
, data
->o_arg
.open_flags
))
1553 delegation
= rcu_dereference(NFS_I(data
->state
->inode
)->delegation
);
1554 if (data
->o_arg
.claim
!= NFS4_OPEN_CLAIM_DELEGATE_CUR
&&
1555 data
->o_arg
.claim
!= NFS4_OPEN_CLAIM_DELEG_CUR_FH
&&
1556 can_open_delegated(delegation
, data
->o_arg
.fmode
))
1557 goto unlock_no_action
;
1560 /* Update client id. */
1561 data
->o_arg
.clientid
= clp
->cl_clientid
;
1562 switch (data
->o_arg
.claim
) {
1563 case NFS4_OPEN_CLAIM_PREVIOUS
:
1564 case NFS4_OPEN_CLAIM_DELEG_CUR_FH
:
1565 case NFS4_OPEN_CLAIM_DELEG_PREV_FH
:
1566 data
->o_arg
.open_bitmap
= &nfs4_open_noattr_bitmap
[0];
1567 case NFS4_OPEN_CLAIM_FH
:
1568 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_NOATTR
];
1569 nfs_copy_fh(&data
->o_res
.fh
, data
->o_arg
.fh
);
1571 data
->timestamp
= jiffies
;
1572 if (nfs4_setup_sequence(data
->o_arg
.server
,
1573 &data
->o_arg
.seq_args
,
1574 &data
->o_res
.seq_res
,
1576 nfs_release_seqid(data
->o_arg
.seqid
);
1578 /* Set the create mode (note dependency on the session type) */
1579 data
->o_arg
.createmode
= NFS4_CREATE_UNCHECKED
;
1580 if (data
->o_arg
.open_flags
& O_EXCL
) {
1581 data
->o_arg
.createmode
= NFS4_CREATE_EXCLUSIVE
;
1582 if (nfs4_has_persistent_session(clp
))
1583 data
->o_arg
.createmode
= NFS4_CREATE_GUARDED
;
1584 else if (clp
->cl_mvops
->minor_version
> 0)
1585 data
->o_arg
.createmode
= NFS4_CREATE_EXCLUSIVE4_1
;
1591 task
->tk_action
= NULL
;
1593 nfs4_sequence_done(task
, &data
->o_res
.seq_res
);
1596 static void nfs4_open_done(struct rpc_task
*task
, void *calldata
)
1598 struct nfs4_opendata
*data
= calldata
;
1600 data
->rpc_status
= task
->tk_status
;
1602 if (!nfs4_sequence_done(task
, &data
->o_res
.seq_res
))
1605 if (task
->tk_status
== 0) {
1606 if (data
->o_res
.f_attr
->valid
& NFS_ATTR_FATTR_TYPE
) {
1607 switch (data
->o_res
.f_attr
->mode
& S_IFMT
) {
1611 data
->rpc_status
= -ELOOP
;
1614 data
->rpc_status
= -EISDIR
;
1617 data
->rpc_status
= -ENOTDIR
;
1620 renew_lease(data
->o_res
.server
, data
->timestamp
);
1621 if (!(data
->o_res
.rflags
& NFS4_OPEN_RESULT_CONFIRM
))
1622 nfs_confirm_seqid(&data
->owner
->so_seqid
, 0);
1627 static void nfs4_open_release(void *calldata
)
1629 struct nfs4_opendata
*data
= calldata
;
1630 struct nfs4_state
*state
= NULL
;
1632 /* If this request hasn't been cancelled, do nothing */
1633 if (data
->cancelled
== 0)
1635 /* In case of error, no cleanup! */
1636 if (data
->rpc_status
!= 0 || !data
->rpc_done
)
1638 /* In case we need an open_confirm, no cleanup! */
1639 if (data
->o_res
.rflags
& NFS4_OPEN_RESULT_CONFIRM
)
1641 state
= nfs4_opendata_to_nfs4_state(data
);
1643 nfs4_close_state(state
, data
->o_arg
.fmode
);
1645 nfs4_opendata_put(data
);
1648 static const struct rpc_call_ops nfs4_open_ops
= {
1649 .rpc_call_prepare
= nfs4_open_prepare
,
1650 .rpc_call_done
= nfs4_open_done
,
1651 .rpc_release
= nfs4_open_release
,
1654 static int nfs4_run_open_task(struct nfs4_opendata
*data
, int isrecover
)
1656 struct inode
*dir
= data
->dir
->d_inode
;
1657 struct nfs_server
*server
= NFS_SERVER(dir
);
1658 struct nfs_openargs
*o_arg
= &data
->o_arg
;
1659 struct nfs_openres
*o_res
= &data
->o_res
;
1660 struct rpc_task
*task
;
1661 struct rpc_message msg
= {
1662 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN
],
1665 .rpc_cred
= data
->owner
->so_cred
,
1667 struct rpc_task_setup task_setup_data
= {
1668 .rpc_client
= server
->client
,
1669 .rpc_message
= &msg
,
1670 .callback_ops
= &nfs4_open_ops
,
1671 .callback_data
= data
,
1672 .workqueue
= nfsiod_workqueue
,
1673 .flags
= RPC_TASK_ASYNC
,
1677 nfs41_init_sequence(&o_arg
->seq_args
, &o_res
->seq_res
, 1);
1678 kref_get(&data
->kref
);
1680 data
->rpc_status
= 0;
1681 data
->cancelled
= 0;
1682 data
->is_recover
= 0;
1684 nfs4_set_sequence_privileged(&o_arg
->seq_args
);
1685 data
->is_recover
= 1;
1687 task
= rpc_run_task(&task_setup_data
);
1689 return PTR_ERR(task
);
1690 status
= nfs4_wait_for_completion_rpc_task(task
);
1692 data
->cancelled
= 1;
1695 status
= data
->rpc_status
;
1701 static int _nfs4_recover_proc_open(struct nfs4_opendata
*data
)
1703 struct inode
*dir
= data
->dir
->d_inode
;
1704 struct nfs_openres
*o_res
= &data
->o_res
;
1707 status
= nfs4_run_open_task(data
, 1);
1708 if (status
!= 0 || !data
->rpc_done
)
1711 nfs_fattr_map_and_free_names(NFS_SERVER(dir
), &data
->f_attr
);
1713 if (o_res
->rflags
& NFS4_OPEN_RESULT_CONFIRM
) {
1714 status
= _nfs4_proc_open_confirm(data
);
1722 static int nfs4_opendata_access(struct rpc_cred
*cred
,
1723 struct nfs4_opendata
*opendata
,
1724 struct nfs4_state
*state
, fmode_t fmode
,
1727 struct nfs_access_entry cache
;
1730 /* access call failed or for some reason the server doesn't
1731 * support any access modes -- defer access call until later */
1732 if (opendata
->o_res
.access_supported
== 0)
1736 /* don't check MAY_WRITE - a newly created file may not have
1737 * write mode bits, but POSIX allows the creating process to write.
1738 * use openflags to check for exec, because fmode won't
1739 * always have FMODE_EXEC set when file open for exec. */
1740 if (openflags
& __FMODE_EXEC
) {
1741 /* ONLY check for exec rights */
1743 } else if (fmode
& FMODE_READ
)
1747 cache
.jiffies
= jiffies
;
1748 nfs_access_set_mask(&cache
, opendata
->o_res
.access_result
);
1749 nfs_access_add_cache(state
->inode
, &cache
);
1751 if ((mask
& ~cache
.mask
& (MAY_READ
| MAY_EXEC
)) == 0)
1754 /* even though OPEN succeeded, access is denied. Close the file */
1755 nfs4_close_state(state
, fmode
);
1760 * Note: On error, nfs4_proc_open will free the struct nfs4_opendata
1762 static int _nfs4_proc_open(struct nfs4_opendata
*data
)
1764 struct inode
*dir
= data
->dir
->d_inode
;
1765 struct nfs_server
*server
= NFS_SERVER(dir
);
1766 struct nfs_openargs
*o_arg
= &data
->o_arg
;
1767 struct nfs_openres
*o_res
= &data
->o_res
;
1770 status
= nfs4_run_open_task(data
, 0);
1771 if (!data
->rpc_done
)
1774 if (status
== -NFS4ERR_BADNAME
&&
1775 !(o_arg
->open_flags
& O_CREAT
))
1780 nfs_fattr_map_and_free_names(server
, &data
->f_attr
);
1782 if (o_arg
->open_flags
& O_CREAT
)
1783 update_changeattr(dir
, &o_res
->cinfo
);
1784 if ((o_res
->rflags
& NFS4_OPEN_RESULT_LOCKTYPE_POSIX
) == 0)
1785 server
->caps
&= ~NFS_CAP_POSIX_LOCK
;
1786 if(o_res
->rflags
& NFS4_OPEN_RESULT_CONFIRM
) {
1787 status
= _nfs4_proc_open_confirm(data
);
1791 if (!(o_res
->f_attr
->valid
& NFS_ATTR_FATTR
))
1792 _nfs4_proc_getattr(server
, &o_res
->fh
, o_res
->f_attr
, o_res
->f_label
);
1796 static int nfs4_recover_expired_lease(struct nfs_server
*server
)
1798 return nfs4_client_recover_expired_lease(server
->nfs_client
);
1803 * reclaim state on the server after a network partition.
1804 * Assumes caller holds the appropriate lock
1806 static int _nfs4_open_expired(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1808 struct nfs4_opendata
*opendata
;
1811 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
,
1812 NFS4_OPEN_CLAIM_FH
);
1813 if (IS_ERR(opendata
))
1814 return PTR_ERR(opendata
);
1815 ret
= nfs4_open_recover(opendata
, state
);
1817 d_drop(ctx
->dentry
);
1818 nfs4_opendata_put(opendata
);
1822 static int nfs4_do_open_expired(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1824 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1825 struct nfs4_exception exception
= { };
1829 err
= _nfs4_open_expired(ctx
, state
);
1830 if (nfs4_clear_cap_atomic_open_v1(server
, err
, &exception
))
1835 case -NFS4ERR_GRACE
:
1836 case -NFS4ERR_DELAY
:
1837 nfs4_handle_exception(server
, err
, &exception
);
1840 } while (exception
.retry
);
1845 static int nfs4_open_expired(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
1847 struct nfs_open_context
*ctx
;
1850 ctx
= nfs4_state_find_open_context(state
);
1853 ret
= nfs4_do_open_expired(ctx
, state
);
1854 put_nfs_open_context(ctx
);
1858 #if defined(CONFIG_NFS_V4_1)
1859 static void nfs41_clear_delegation_stateid(struct nfs4_state
*state
)
1861 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1862 nfs4_stateid
*stateid
= &state
->stateid
;
1865 /* If a state reset has been done, test_stateid is unneeded */
1866 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0)
1869 status
= nfs41_test_stateid(server
, stateid
);
1870 if (status
!= NFS_OK
) {
1871 /* Free the stateid unless the server explicitly
1872 * informs us the stateid is unrecognized. */
1873 if (status
!= -NFS4ERR_BAD_STATEID
)
1874 nfs41_free_stateid(server
, stateid
);
1875 nfs_remove_bad_delegation(state
->inode
);
1877 write_seqlock(&state
->seqlock
);
1878 nfs4_stateid_copy(&state
->stateid
, &state
->open_stateid
);
1879 write_sequnlock(&state
->seqlock
);
1880 clear_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1885 * nfs41_check_open_stateid - possibly free an open stateid
1887 * @state: NFSv4 state for an inode
1889 * Returns NFS_OK if recovery for this stateid is now finished.
1890 * Otherwise a negative NFS4ERR value is returned.
1892 static int nfs41_check_open_stateid(struct nfs4_state
*state
)
1894 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1895 nfs4_stateid
*stateid
= &state
->open_stateid
;
1898 /* If a state reset has been done, test_stateid is unneeded */
1899 if ((test_bit(NFS_O_RDONLY_STATE
, &state
->flags
) == 0) &&
1900 (test_bit(NFS_O_WRONLY_STATE
, &state
->flags
) == 0) &&
1901 (test_bit(NFS_O_RDWR_STATE
, &state
->flags
) == 0))
1902 return -NFS4ERR_BAD_STATEID
;
1904 status
= nfs41_test_stateid(server
, stateid
);
1905 if (status
!= NFS_OK
) {
1906 /* Free the stateid unless the server explicitly
1907 * informs us the stateid is unrecognized. */
1908 if (status
!= -NFS4ERR_BAD_STATEID
)
1909 nfs41_free_stateid(server
, stateid
);
1911 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1912 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1913 clear_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1914 clear_bit(NFS_OPEN_STATE
, &state
->flags
);
1919 static int nfs41_open_expired(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
1923 nfs41_clear_delegation_stateid(state
);
1924 status
= nfs41_check_open_stateid(state
);
1925 if (status
!= NFS_OK
)
1926 status
= nfs4_open_expired(sp
, state
);
1932 * on an EXCLUSIVE create, the server should send back a bitmask with FATTR4-*
1933 * fields corresponding to attributes that were used to store the verifier.
1934 * Make sure we clobber those fields in the later setattr call
1936 static inline void nfs4_exclusive_attrset(struct nfs4_opendata
*opendata
, struct iattr
*sattr
)
1938 if ((opendata
->o_res
.attrset
[1] & FATTR4_WORD1_TIME_ACCESS
) &&
1939 !(sattr
->ia_valid
& ATTR_ATIME_SET
))
1940 sattr
->ia_valid
|= ATTR_ATIME
;
1942 if ((opendata
->o_res
.attrset
[1] & FATTR4_WORD1_TIME_MODIFY
) &&
1943 !(sattr
->ia_valid
& ATTR_MTIME_SET
))
1944 sattr
->ia_valid
|= ATTR_MTIME
;
1947 static int _nfs4_open_and_get_state(struct nfs4_opendata
*opendata
,
1950 struct nfs4_state
**res
)
1952 struct nfs4_state_owner
*sp
= opendata
->owner
;
1953 struct nfs_server
*server
= sp
->so_server
;
1954 struct nfs4_state
*state
;
1958 seq
= raw_seqcount_begin(&sp
->so_reclaim_seqcount
);
1960 ret
= _nfs4_proc_open(opendata
);
1964 state
= nfs4_opendata_to_nfs4_state(opendata
);
1965 ret
= PTR_ERR(state
);
1968 if (server
->caps
& NFS_CAP_POSIX_LOCK
)
1969 set_bit(NFS_STATE_POSIX_LOCKS
, &state
->flags
);
1971 ret
= nfs4_opendata_access(sp
->so_cred
, opendata
, state
, fmode
, flags
);
1975 if (read_seqcount_retry(&sp
->so_reclaim_seqcount
, seq
))
1976 nfs4_schedule_stateid_recovery(server
, state
);
1983 * Returns a referenced nfs4_state
1985 static int _nfs4_do_open(struct inode
*dir
,
1986 struct dentry
*dentry
,
1989 struct iattr
*sattr
,
1990 struct nfs4_label
*label
,
1991 struct rpc_cred
*cred
,
1992 struct nfs4_state
**res
,
1993 struct nfs4_threshold
**ctx_th
)
1995 struct nfs4_state_owner
*sp
;
1996 struct nfs4_state
*state
= NULL
;
1997 struct nfs_server
*server
= NFS_SERVER(dir
);
1998 struct nfs4_opendata
*opendata
;
1999 enum open_claim_type4 claim
= NFS4_OPEN_CLAIM_NULL
;
2000 struct nfs4_label
*olabel
= NULL
;
2003 /* Protect against reboot recovery conflicts */
2005 sp
= nfs4_get_state_owner(server
, cred
, GFP_KERNEL
);
2007 dprintk("nfs4_do_open: nfs4_get_state_owner failed!\n");
2010 status
= nfs4_recover_expired_lease(server
);
2012 goto err_put_state_owner
;
2013 if (dentry
->d_inode
!= NULL
)
2014 nfs4_return_incompatible_delegation(dentry
->d_inode
, fmode
);
2016 if (dentry
->d_inode
)
2017 claim
= NFS4_OPEN_CLAIM_FH
;
2018 opendata
= nfs4_opendata_alloc(dentry
, sp
, fmode
, flags
, sattr
,
2019 label
, claim
, GFP_KERNEL
);
2020 if (opendata
== NULL
)
2021 goto err_put_state_owner
;
2023 if (ctx_th
&& server
->attr_bitmask
[2] & FATTR4_WORD2_MDSTHRESHOLD
) {
2024 opendata
->f_attr
.mdsthreshold
= pnfs_mdsthreshold_alloc();
2025 if (!opendata
->f_attr
.mdsthreshold
)
2026 goto err_opendata_put
;
2027 opendata
->o_arg
.open_bitmap
= &nfs4_pnfs_open_bitmap
[0];
2029 if (dentry
->d_inode
!= NULL
)
2030 opendata
->state
= nfs4_get_open_state(dentry
->d_inode
, sp
);
2032 status
= _nfs4_open_and_get_state(opendata
, fmode
, flags
, &state
);
2034 goto err_opendata_put
;
2036 if ((opendata
->o_arg
.open_flags
& O_EXCL
) &&
2037 (opendata
->o_arg
.createmode
!= NFS4_CREATE_GUARDED
)) {
2038 nfs4_exclusive_attrset(opendata
, sattr
);
2040 nfs_fattr_init(opendata
->o_res
.f_attr
);
2041 status
= nfs4_do_setattr(state
->inode
, cred
,
2042 opendata
->o_res
.f_attr
, sattr
,
2043 state
, label
, olabel
);
2045 nfs_setattr_update_inode(state
->inode
, sattr
);
2046 nfs_post_op_update_inode(state
->inode
, opendata
->o_res
.f_attr
);
2050 if (pnfs_use_threshold(ctx_th
, opendata
->f_attr
.mdsthreshold
, server
))
2051 *ctx_th
= opendata
->f_attr
.mdsthreshold
;
2053 kfree(opendata
->f_attr
.mdsthreshold
);
2054 opendata
->f_attr
.mdsthreshold
= NULL
;
2056 nfs4_opendata_put(opendata
);
2057 nfs4_put_state_owner(sp
);
2061 kfree(opendata
->f_attr
.mdsthreshold
);
2062 nfs4_opendata_put(opendata
);
2063 err_put_state_owner
:
2064 nfs4_put_state_owner(sp
);
2071 static struct nfs4_state
*nfs4_do_open(struct inode
*dir
,
2072 struct dentry
*dentry
,
2075 struct iattr
*sattr
,
2076 struct nfs4_label
*label
,
2077 struct rpc_cred
*cred
,
2078 struct nfs4_threshold
**ctx_th
)
2080 struct nfs_server
*server
= NFS_SERVER(dir
);
2081 struct nfs4_exception exception
= { };
2082 struct nfs4_state
*res
;
2085 fmode
&= FMODE_READ
|FMODE_WRITE
|FMODE_EXEC
;
2087 status
= _nfs4_do_open(dir
, dentry
, fmode
, flags
, sattr
, label
, cred
,
2091 /* NOTE: BAD_SEQID means the server and client disagree about the
2092 * book-keeping w.r.t. state-changing operations
2093 * (OPEN/CLOSE/LOCK/LOCKU...)
2094 * It is actually a sign of a bug on the client or on the server.
2096 * If we receive a BAD_SEQID error in the particular case of
2097 * doing an OPEN, we assume that nfs_increment_open_seqid() will
2098 * have unhashed the old state_owner for us, and that we can
2099 * therefore safely retry using a new one. We should still warn
2100 * the user though...
2102 if (status
== -NFS4ERR_BAD_SEQID
) {
2103 pr_warn_ratelimited("NFS: v4 server %s "
2104 " returned a bad sequence-id error!\n",
2105 NFS_SERVER(dir
)->nfs_client
->cl_hostname
);
2106 exception
.retry
= 1;
2110 * BAD_STATEID on OPEN means that the server cancelled our
2111 * state before it received the OPEN_CONFIRM.
2112 * Recover by retrying the request as per the discussion
2113 * on Page 181 of RFC3530.
2115 if (status
== -NFS4ERR_BAD_STATEID
) {
2116 exception
.retry
= 1;
2119 if (status
== -EAGAIN
) {
2120 /* We must have found a delegation */
2121 exception
.retry
= 1;
2124 if (nfs4_clear_cap_atomic_open_v1(server
, status
, &exception
))
2126 res
= ERR_PTR(nfs4_handle_exception(server
,
2127 status
, &exception
));
2128 } while (exception
.retry
);
2132 static int _nfs4_do_setattr(struct inode
*inode
, struct rpc_cred
*cred
,
2133 struct nfs_fattr
*fattr
, struct iattr
*sattr
,
2134 struct nfs4_state
*state
, struct nfs4_label
*ilabel
,
2135 struct nfs4_label
*olabel
)
2137 struct nfs_server
*server
= NFS_SERVER(inode
);
2138 struct nfs_setattrargs arg
= {
2139 .fh
= NFS_FH(inode
),
2142 .bitmask
= server
->attr_bitmask
,
2145 struct nfs_setattrres res
= {
2150 struct rpc_message msg
= {
2151 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETATTR
],
2156 unsigned long timestamp
= jiffies
;
2161 nfs_fattr_init(fattr
);
2163 /* Servers should only apply open mode checks for file size changes */
2164 truncate
= (sattr
->ia_valid
& ATTR_SIZE
) ? true : false;
2165 fmode
= truncate
? FMODE_WRITE
: FMODE_READ
;
2167 if (nfs4_copy_delegation_stateid(&arg
.stateid
, inode
, fmode
)) {
2168 /* Use that stateid */
2169 } else if (truncate
&& state
!= NULL
&& nfs4_valid_open_stateid(state
)) {
2170 struct nfs_lockowner lockowner
= {
2171 .l_owner
= current
->files
,
2172 .l_pid
= current
->tgid
,
2174 nfs4_select_rw_stateid(&arg
.stateid
, state
, FMODE_WRITE
,
2177 nfs4_stateid_copy(&arg
.stateid
, &zero_stateid
);
2179 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
2180 if (status
== 0 && state
!= NULL
)
2181 renew_lease(server
, timestamp
);
2185 static int nfs4_do_setattr(struct inode
*inode
, struct rpc_cred
*cred
,
2186 struct nfs_fattr
*fattr
, struct iattr
*sattr
,
2187 struct nfs4_state
*state
, struct nfs4_label
*ilabel
,
2188 struct nfs4_label
*olabel
)
2190 struct nfs_server
*server
= NFS_SERVER(inode
);
2191 struct nfs4_exception exception
= {
2197 err
= _nfs4_do_setattr(inode
, cred
, fattr
, sattr
, state
, ilabel
, olabel
);
2199 case -NFS4ERR_OPENMODE
:
2200 if (!(sattr
->ia_valid
& ATTR_SIZE
)) {
2201 pr_warn_once("NFSv4: server %s is incorrectly "
2202 "applying open mode checks to "
2203 "a SETATTR that is not "
2204 "changing file size.\n",
2205 server
->nfs_client
->cl_hostname
);
2207 if (state
&& !(state
->state
& FMODE_WRITE
)) {
2209 if (sattr
->ia_valid
& ATTR_OPEN
)
2214 err
= nfs4_handle_exception(server
, err
, &exception
);
2215 } while (exception
.retry
);
2220 struct nfs4_closedata
{
2221 struct inode
*inode
;
2222 struct nfs4_state
*state
;
2223 struct nfs_closeargs arg
;
2224 struct nfs_closeres res
;
2225 struct nfs_fattr fattr
;
2226 unsigned long timestamp
;
2231 static void nfs4_free_closedata(void *data
)
2233 struct nfs4_closedata
*calldata
= data
;
2234 struct nfs4_state_owner
*sp
= calldata
->state
->owner
;
2235 struct super_block
*sb
= calldata
->state
->inode
->i_sb
;
2238 pnfs_roc_release(calldata
->state
->inode
);
2239 nfs4_put_open_state(calldata
->state
);
2240 nfs_free_seqid(calldata
->arg
.seqid
);
2241 nfs4_put_state_owner(sp
);
2242 nfs_sb_deactive(sb
);
2246 static void nfs4_close_clear_stateid_flags(struct nfs4_state
*state
,
2249 spin_lock(&state
->owner
->so_lock
);
2250 clear_bit(NFS_O_RDWR_STATE
, &state
->flags
);
2251 switch (fmode
& (FMODE_READ
|FMODE_WRITE
)) {
2253 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
2256 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
2259 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
2260 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
2261 clear_bit(NFS_OPEN_STATE
, &state
->flags
);
2263 spin_unlock(&state
->owner
->so_lock
);
2266 static void nfs4_close_done(struct rpc_task
*task
, void *data
)
2268 struct nfs4_closedata
*calldata
= data
;
2269 struct nfs4_state
*state
= calldata
->state
;
2270 struct nfs_server
*server
= NFS_SERVER(calldata
->inode
);
2272 dprintk("%s: begin!\n", __func__
);
2273 if (!nfs4_sequence_done(task
, &calldata
->res
.seq_res
))
2275 /* hmm. we are done with the inode, and in the process of freeing
2276 * the state_owner. we keep this around to process errors
2278 switch (task
->tk_status
) {
2281 pnfs_roc_set_barrier(state
->inode
,
2282 calldata
->roc_barrier
);
2283 nfs_set_open_stateid(state
, &calldata
->res
.stateid
, 0);
2284 renew_lease(server
, calldata
->timestamp
);
2285 nfs4_close_clear_stateid_flags(state
,
2286 calldata
->arg
.fmode
);
2288 case -NFS4ERR_STALE_STATEID
:
2289 case -NFS4ERR_OLD_STATEID
:
2290 case -NFS4ERR_BAD_STATEID
:
2291 case -NFS4ERR_EXPIRED
:
2292 if (calldata
->arg
.fmode
== 0)
2295 if (nfs4_async_handle_error(task
, server
, state
) == -EAGAIN
)
2296 rpc_restart_call_prepare(task
);
2298 nfs_release_seqid(calldata
->arg
.seqid
);
2299 nfs_refresh_inode(calldata
->inode
, calldata
->res
.fattr
);
2300 dprintk("%s: done, ret = %d!\n", __func__
, task
->tk_status
);
2303 static void nfs4_close_prepare(struct rpc_task
*task
, void *data
)
2305 struct nfs4_closedata
*calldata
= data
;
2306 struct nfs4_state
*state
= calldata
->state
;
2307 struct inode
*inode
= calldata
->inode
;
2310 dprintk("%s: begin!\n", __func__
);
2311 if (nfs_wait_on_sequence(calldata
->arg
.seqid
, task
) != 0)
2314 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_DOWNGRADE
];
2315 calldata
->arg
.fmode
= FMODE_READ
|FMODE_WRITE
;
2316 spin_lock(&state
->owner
->so_lock
);
2317 /* Calculate the change in open mode */
2318 if (state
->n_rdwr
== 0) {
2319 if (state
->n_rdonly
== 0) {
2320 call_close
|= test_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
2321 call_close
|= test_bit(NFS_O_RDWR_STATE
, &state
->flags
);
2322 calldata
->arg
.fmode
&= ~FMODE_READ
;
2324 if (state
->n_wronly
== 0) {
2325 call_close
|= test_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
2326 call_close
|= test_bit(NFS_O_RDWR_STATE
, &state
->flags
);
2327 calldata
->arg
.fmode
&= ~FMODE_WRITE
;
2330 if (!nfs4_valid_open_stateid(state
))
2332 spin_unlock(&state
->owner
->so_lock
);
2335 /* Note: exit _without_ calling nfs4_close_done */
2339 if (calldata
->arg
.fmode
== 0) {
2340 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CLOSE
];
2341 if (calldata
->roc
&&
2342 pnfs_roc_drain(inode
, &calldata
->roc_barrier
, task
)) {
2343 nfs_release_seqid(calldata
->arg
.seqid
);
2348 nfs_fattr_init(calldata
->res
.fattr
);
2349 calldata
->timestamp
= jiffies
;
2350 if (nfs4_setup_sequence(NFS_SERVER(inode
),
2351 &calldata
->arg
.seq_args
,
2352 &calldata
->res
.seq_res
,
2354 nfs_release_seqid(calldata
->arg
.seqid
);
2355 dprintk("%s: done!\n", __func__
);
2358 task
->tk_action
= NULL
;
2360 nfs4_sequence_done(task
, &calldata
->res
.seq_res
);
2363 static const struct rpc_call_ops nfs4_close_ops
= {
2364 .rpc_call_prepare
= nfs4_close_prepare
,
2365 .rpc_call_done
= nfs4_close_done
,
2366 .rpc_release
= nfs4_free_closedata
,
2370 * It is possible for data to be read/written from a mem-mapped file
2371 * after the sys_close call (which hits the vfs layer as a flush).
2372 * This means that we can't safely call nfsv4 close on a file until
2373 * the inode is cleared. This in turn means that we are not good
2374 * NFSv4 citizens - we do not indicate to the server to update the file's
2375 * share state even when we are done with one of the three share
2376 * stateid's in the inode.
2378 * NOTE: Caller must be holding the sp->so_owner semaphore!
2380 int nfs4_do_close(struct nfs4_state
*state
, gfp_t gfp_mask
, int wait
)
2382 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
2383 struct nfs4_closedata
*calldata
;
2384 struct nfs4_state_owner
*sp
= state
->owner
;
2385 struct rpc_task
*task
;
2386 struct rpc_message msg
= {
2387 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CLOSE
],
2388 .rpc_cred
= state
->owner
->so_cred
,
2390 struct rpc_task_setup task_setup_data
= {
2391 .rpc_client
= server
->client
,
2392 .rpc_message
= &msg
,
2393 .callback_ops
= &nfs4_close_ops
,
2394 .workqueue
= nfsiod_workqueue
,
2395 .flags
= RPC_TASK_ASYNC
,
2397 int status
= -ENOMEM
;
2399 calldata
= kzalloc(sizeof(*calldata
), gfp_mask
);
2400 if (calldata
== NULL
)
2402 nfs41_init_sequence(&calldata
->arg
.seq_args
, &calldata
->res
.seq_res
, 1);
2403 calldata
->inode
= state
->inode
;
2404 calldata
->state
= state
;
2405 calldata
->arg
.fh
= NFS_FH(state
->inode
);
2406 calldata
->arg
.stateid
= &state
->open_stateid
;
2407 /* Serialization for the sequence id */
2408 calldata
->arg
.seqid
= nfs_alloc_seqid(&state
->owner
->so_seqid
, gfp_mask
);
2409 if (calldata
->arg
.seqid
== NULL
)
2410 goto out_free_calldata
;
2411 calldata
->arg
.fmode
= 0;
2412 calldata
->arg
.bitmask
= server
->cache_consistency_bitmask
;
2413 calldata
->res
.fattr
= &calldata
->fattr
;
2414 calldata
->res
.seqid
= calldata
->arg
.seqid
;
2415 calldata
->res
.server
= server
;
2416 calldata
->roc
= pnfs_roc(state
->inode
);
2417 nfs_sb_active(calldata
->inode
->i_sb
);
2419 msg
.rpc_argp
= &calldata
->arg
;
2420 msg
.rpc_resp
= &calldata
->res
;
2421 task_setup_data
.callback_data
= calldata
;
2422 task
= rpc_run_task(&task_setup_data
);
2424 return PTR_ERR(task
);
2427 status
= rpc_wait_for_completion_task(task
);
2433 nfs4_put_open_state(state
);
2434 nfs4_put_state_owner(sp
);
2438 static struct inode
*
2439 nfs4_atomic_open(struct inode
*dir
, struct nfs_open_context
*ctx
, int open_flags
, struct iattr
*attr
)
2441 struct nfs4_state
*state
;
2442 struct nfs4_label
*label
= NULL
;
2444 /* Protect against concurrent sillydeletes */
2445 state
= nfs4_do_open(dir
, ctx
->dentry
, ctx
->mode
, open_flags
, attr
, label
,
2446 ctx
->cred
, &ctx
->mdsthreshold
);
2448 return ERR_CAST(state
);
2450 return igrab(state
->inode
);
2453 static void nfs4_close_context(struct nfs_open_context
*ctx
, int is_sync
)
2455 if (ctx
->state
== NULL
)
2458 nfs4_close_sync(ctx
->state
, ctx
->mode
);
2460 nfs4_close_state(ctx
->state
, ctx
->mode
);
2463 static int _nfs4_server_capabilities(struct nfs_server
*server
, struct nfs_fh
*fhandle
)
2465 struct nfs4_server_caps_arg args
= {
2468 struct nfs4_server_caps_res res
= {};
2469 struct rpc_message msg
= {
2470 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SERVER_CAPS
],
2476 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2478 memcpy(server
->attr_bitmask
, res
.attr_bitmask
, sizeof(server
->attr_bitmask
));
2479 server
->caps
&= ~(NFS_CAP_ACLS
|NFS_CAP_HARDLINKS
|
2480 NFS_CAP_SYMLINKS
|NFS_CAP_FILEID
|
2481 NFS_CAP_MODE
|NFS_CAP_NLINK
|NFS_CAP_OWNER
|
2482 NFS_CAP_OWNER_GROUP
|NFS_CAP_ATIME
|
2483 NFS_CAP_CTIME
|NFS_CAP_MTIME
);
2484 if (res
.attr_bitmask
[0] & FATTR4_WORD0_ACL
)
2485 server
->caps
|= NFS_CAP_ACLS
;
2486 if (res
.has_links
!= 0)
2487 server
->caps
|= NFS_CAP_HARDLINKS
;
2488 if (res
.has_symlinks
!= 0)
2489 server
->caps
|= NFS_CAP_SYMLINKS
;
2490 if (res
.attr_bitmask
[0] & FATTR4_WORD0_FILEID
)
2491 server
->caps
|= NFS_CAP_FILEID
;
2492 if (res
.attr_bitmask
[1] & FATTR4_WORD1_MODE
)
2493 server
->caps
|= NFS_CAP_MODE
;
2494 if (res
.attr_bitmask
[1] & FATTR4_WORD1_NUMLINKS
)
2495 server
->caps
|= NFS_CAP_NLINK
;
2496 if (res
.attr_bitmask
[1] & FATTR4_WORD1_OWNER
)
2497 server
->caps
|= NFS_CAP_OWNER
;
2498 if (res
.attr_bitmask
[1] & FATTR4_WORD1_OWNER_GROUP
)
2499 server
->caps
|= NFS_CAP_OWNER_GROUP
;
2500 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_ACCESS
)
2501 server
->caps
|= NFS_CAP_ATIME
;
2502 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_METADATA
)
2503 server
->caps
|= NFS_CAP_CTIME
;
2504 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_MODIFY
)
2505 server
->caps
|= NFS_CAP_MTIME
;
2507 memcpy(server
->cache_consistency_bitmask
, res
.attr_bitmask
, sizeof(server
->cache_consistency_bitmask
));
2508 server
->cache_consistency_bitmask
[0] &= FATTR4_WORD0_CHANGE
|FATTR4_WORD0_SIZE
;
2509 server
->cache_consistency_bitmask
[1] &= FATTR4_WORD1_TIME_METADATA
|FATTR4_WORD1_TIME_MODIFY
;
2510 server
->acl_bitmask
= res
.acl_bitmask
;
2511 server
->fh_expire_type
= res
.fh_expire_type
;
2517 int nfs4_server_capabilities(struct nfs_server
*server
, struct nfs_fh
*fhandle
)
2519 struct nfs4_exception exception
= { };
2522 err
= nfs4_handle_exception(server
,
2523 _nfs4_server_capabilities(server
, fhandle
),
2525 } while (exception
.retry
);
2529 static int _nfs4_lookup_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2530 struct nfs_fsinfo
*info
)
2532 struct nfs4_lookup_root_arg args
= {
2533 .bitmask
= nfs4_fattr_bitmap
,
2535 struct nfs4_lookup_res res
= {
2537 .fattr
= info
->fattr
,
2540 struct rpc_message msg
= {
2541 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOOKUP_ROOT
],
2546 nfs_fattr_init(info
->fattr
);
2547 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2550 static int nfs4_lookup_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2551 struct nfs_fsinfo
*info
)
2553 struct nfs4_exception exception
= { };
2556 err
= _nfs4_lookup_root(server
, fhandle
, info
);
2559 case -NFS4ERR_WRONGSEC
:
2562 err
= nfs4_handle_exception(server
, err
, &exception
);
2564 } while (exception
.retry
);
2569 static int nfs4_lookup_root_sec(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2570 struct nfs_fsinfo
*info
, rpc_authflavor_t flavor
)
2572 struct rpc_auth
*auth
;
2575 auth
= rpcauth_create(flavor
, server
->client
);
2580 ret
= nfs4_lookup_root(server
, fhandle
, info
);
2586 * Retry pseudoroot lookup with various security flavors. We do this when:
2588 * NFSv4.0: the PUTROOTFH operation returns NFS4ERR_WRONGSEC
2589 * NFSv4.1: the server does not support the SECINFO_NO_NAME operation
2591 * Returns zero on success, or a negative NFS4ERR value, or a
2592 * negative errno value.
2594 static int nfs4_find_root_sec(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2595 struct nfs_fsinfo
*info
)
2597 /* Per 3530bis 15.33.5 */
2598 static const rpc_authflavor_t flav_array
[] = {
2602 RPC_AUTH_UNIX
, /* courtesy */
2605 int status
= -EPERM
;
2608 for (i
= 0; i
< ARRAY_SIZE(flav_array
); i
++) {
2609 status
= nfs4_lookup_root_sec(server
, fhandle
, info
, flav_array
[i
]);
2610 if (status
== -NFS4ERR_WRONGSEC
|| status
== -EACCES
)
2616 * -EACCESS could mean that the user doesn't have correct permissions
2617 * to access the mount. It could also mean that we tried to mount
2618 * with a gss auth flavor, but rpc.gssd isn't running. Either way,
2619 * existing mount programs don't handle -EACCES very well so it should
2620 * be mapped to -EPERM instead.
2622 if (status
== -EACCES
)
2627 static int nfs4_do_find_root_sec(struct nfs_server
*server
,
2628 struct nfs_fh
*fhandle
, struct nfs_fsinfo
*info
)
2630 int mv
= server
->nfs_client
->cl_minorversion
;
2631 return nfs_v4_minor_ops
[mv
]->find_root_sec(server
, fhandle
, info
);
2635 * nfs4_proc_get_rootfh - get file handle for server's pseudoroot
2636 * @server: initialized nfs_server handle
2637 * @fhandle: we fill in the pseudo-fs root file handle
2638 * @info: we fill in an FSINFO struct
2640 * Returns zero on success, or a negative errno.
2642 int nfs4_proc_get_rootfh(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2643 struct nfs_fsinfo
*info
)
2647 status
= nfs4_lookup_root(server
, fhandle
, info
);
2648 if ((status
== -NFS4ERR_WRONGSEC
) &&
2649 !(server
->flags
& NFS_MOUNT_SECFLAVOUR
))
2650 status
= nfs4_do_find_root_sec(server
, fhandle
, info
);
2653 status
= nfs4_server_capabilities(server
, fhandle
);
2655 status
= nfs4_do_fsinfo(server
, fhandle
, info
);
2657 return nfs4_map_errors(status
);
2660 static int nfs4_proc_get_root(struct nfs_server
*server
, struct nfs_fh
*mntfh
,
2661 struct nfs_fsinfo
*info
)
2664 struct nfs_fattr
*fattr
= info
->fattr
;
2665 struct nfs4_label
*label
= NULL
;
2667 error
= nfs4_server_capabilities(server
, mntfh
);
2669 dprintk("nfs4_get_root: getcaps error = %d\n", -error
);
2673 error
= nfs4_proc_getattr(server
, mntfh
, fattr
, label
);
2675 dprintk("nfs4_get_root: getattr error = %d\n", -error
);
2679 if (fattr
->valid
& NFS_ATTR_FATTR_FSID
&&
2680 !nfs_fsid_equal(&server
->fsid
, &fattr
->fsid
))
2681 memcpy(&server
->fsid
, &fattr
->fsid
, sizeof(server
->fsid
));
2687 * Get locations and (maybe) other attributes of a referral.
2688 * Note that we'll actually follow the referral later when
2689 * we detect fsid mismatch in inode revalidation
2691 static int nfs4_get_referral(struct rpc_clnt
*client
, struct inode
*dir
,
2692 const struct qstr
*name
, struct nfs_fattr
*fattr
,
2693 struct nfs_fh
*fhandle
)
2695 int status
= -ENOMEM
;
2696 struct page
*page
= NULL
;
2697 struct nfs4_fs_locations
*locations
= NULL
;
2699 page
= alloc_page(GFP_KERNEL
);
2702 locations
= kmalloc(sizeof(struct nfs4_fs_locations
), GFP_KERNEL
);
2703 if (locations
== NULL
)
2706 status
= nfs4_proc_fs_locations(client
, dir
, name
, locations
, page
);
2709 /* Make sure server returned a different fsid for the referral */
2710 if (nfs_fsid_equal(&NFS_SERVER(dir
)->fsid
, &locations
->fattr
.fsid
)) {
2711 dprintk("%s: server did not return a different fsid for"
2712 " a referral at %s\n", __func__
, name
->name
);
2716 /* Fixup attributes for the nfs_lookup() call to nfs_fhget() */
2717 nfs_fixup_referral_attributes(&locations
->fattr
);
2719 /* replace the lookup nfs_fattr with the locations nfs_fattr */
2720 memcpy(fattr
, &locations
->fattr
, sizeof(struct nfs_fattr
));
2721 memset(fhandle
, 0, sizeof(struct nfs_fh
));
2729 static int _nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2730 struct nfs_fattr
*fattr
, struct nfs4_label
*label
)
2732 struct nfs4_getattr_arg args
= {
2734 .bitmask
= server
->attr_bitmask
,
2736 struct nfs4_getattr_res res
= {
2741 struct rpc_message msg
= {
2742 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETATTR
],
2747 nfs_fattr_init(fattr
);
2748 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2751 static int nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2752 struct nfs_fattr
*fattr
, struct nfs4_label
*label
)
2754 struct nfs4_exception exception
= { };
2757 err
= nfs4_handle_exception(server
,
2758 _nfs4_proc_getattr(server
, fhandle
, fattr
, label
),
2760 } while (exception
.retry
);
2765 * The file is not closed if it is opened due to the a request to change
2766 * the size of the file. The open call will not be needed once the
2767 * VFS layer lookup-intents are implemented.
2769 * Close is called when the inode is destroyed.
2770 * If we haven't opened the file for O_WRONLY, we
2771 * need to in the size_change case to obtain a stateid.
2774 * Because OPEN is always done by name in nfsv4, it is
2775 * possible that we opened a different file by the same
2776 * name. We can recognize this race condition, but we
2777 * can't do anything about it besides returning an error.
2779 * This will be fixed with VFS changes (lookup-intent).
2782 nfs4_proc_setattr(struct dentry
*dentry
, struct nfs_fattr
*fattr
,
2783 struct iattr
*sattr
)
2785 struct inode
*inode
= dentry
->d_inode
;
2786 struct rpc_cred
*cred
= NULL
;
2787 struct nfs4_state
*state
= NULL
;
2790 if (pnfs_ld_layoutret_on_setattr(inode
))
2791 pnfs_commit_and_return_layout(inode
);
2793 nfs_fattr_init(fattr
);
2795 /* Deal with open(O_TRUNC) */
2796 if (sattr
->ia_valid
& ATTR_OPEN
)
2797 sattr
->ia_valid
&= ~(ATTR_MTIME
|ATTR_CTIME
|ATTR_OPEN
);
2799 /* Optimization: if the end result is no change, don't RPC */
2800 if ((sattr
->ia_valid
& ~(ATTR_FILE
)) == 0)
2803 /* Search for an existing open(O_WRITE) file */
2804 if (sattr
->ia_valid
& ATTR_FILE
) {
2805 struct nfs_open_context
*ctx
;
2807 ctx
= nfs_file_open_context(sattr
->ia_file
);
2814 status
= nfs4_do_setattr(inode
, cred
, fattr
, sattr
, state
, NULL
, NULL
);
2816 nfs_setattr_update_inode(inode
, sattr
);
2820 static int _nfs4_proc_lookup(struct rpc_clnt
*clnt
, struct inode
*dir
,
2821 const struct qstr
*name
, struct nfs_fh
*fhandle
,
2822 struct nfs_fattr
*fattr
, struct nfs4_label
*label
)
2824 struct nfs_server
*server
= NFS_SERVER(dir
);
2826 struct nfs4_lookup_arg args
= {
2827 .bitmask
= server
->attr_bitmask
,
2828 .dir_fh
= NFS_FH(dir
),
2831 struct nfs4_lookup_res res
= {
2836 struct rpc_message msg
= {
2837 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOOKUP
],
2842 nfs_fattr_init(fattr
);
2844 dprintk("NFS call lookup %s\n", name
->name
);
2845 status
= nfs4_call_sync(clnt
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2846 dprintk("NFS reply lookup: %d\n", status
);
2850 static void nfs_fixup_secinfo_attributes(struct nfs_fattr
*fattr
)
2852 fattr
->valid
|= NFS_ATTR_FATTR_TYPE
| NFS_ATTR_FATTR_MODE
|
2853 NFS_ATTR_FATTR_NLINK
| NFS_ATTR_FATTR_MOUNTPOINT
;
2854 fattr
->mode
= S_IFDIR
| S_IRUGO
| S_IXUGO
;
2858 static int nfs4_proc_lookup_common(struct rpc_clnt
**clnt
, struct inode
*dir
,
2859 struct qstr
*name
, struct nfs_fh
*fhandle
,
2860 struct nfs_fattr
*fattr
, struct nfs4_label
*label
)
2862 struct nfs4_exception exception
= { };
2863 struct rpc_clnt
*client
= *clnt
;
2866 err
= _nfs4_proc_lookup(client
, dir
, name
, fhandle
, fattr
, label
);
2868 case -NFS4ERR_BADNAME
:
2871 case -NFS4ERR_MOVED
:
2872 err
= nfs4_get_referral(client
, dir
, name
, fattr
, fhandle
);
2874 case -NFS4ERR_WRONGSEC
:
2876 if (client
!= *clnt
)
2879 client
= nfs4_create_sec_client(client
, dir
, name
);
2881 return PTR_ERR(client
);
2883 exception
.retry
= 1;
2886 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
, &exception
);
2888 } while (exception
.retry
);
2893 else if (client
!= *clnt
)
2894 rpc_shutdown_client(client
);
2899 static int nfs4_proc_lookup(struct inode
*dir
, struct qstr
*name
,
2900 struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
,
2901 struct nfs4_label
*label
)
2904 struct rpc_clnt
*client
= NFS_CLIENT(dir
);
2906 status
= nfs4_proc_lookup_common(&client
, dir
, name
, fhandle
, fattr
, label
);
2907 if (client
!= NFS_CLIENT(dir
)) {
2908 rpc_shutdown_client(client
);
2909 nfs_fixup_secinfo_attributes(fattr
);
2915 nfs4_proc_lookup_mountpoint(struct inode
*dir
, struct qstr
*name
,
2916 struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
2919 struct rpc_clnt
*client
= rpc_clone_client(NFS_CLIENT(dir
));
2921 status
= nfs4_proc_lookup_common(&client
, dir
, name
, fhandle
, fattr
, NULL
);
2923 rpc_shutdown_client(client
);
2924 return ERR_PTR(status
);
2929 static int _nfs4_proc_access(struct inode
*inode
, struct nfs_access_entry
*entry
)
2931 struct nfs_server
*server
= NFS_SERVER(inode
);
2932 struct nfs4_accessargs args
= {
2933 .fh
= NFS_FH(inode
),
2934 .bitmask
= server
->cache_consistency_bitmask
,
2936 struct nfs4_accessres res
= {
2939 struct rpc_message msg
= {
2940 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_ACCESS
],
2943 .rpc_cred
= entry
->cred
,
2945 int mode
= entry
->mask
;
2949 * Determine which access bits we want to ask for...
2951 if (mode
& MAY_READ
)
2952 args
.access
|= NFS4_ACCESS_READ
;
2953 if (S_ISDIR(inode
->i_mode
)) {
2954 if (mode
& MAY_WRITE
)
2955 args
.access
|= NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
| NFS4_ACCESS_DELETE
;
2956 if (mode
& MAY_EXEC
)
2957 args
.access
|= NFS4_ACCESS_LOOKUP
;
2959 if (mode
& MAY_WRITE
)
2960 args
.access
|= NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
;
2961 if (mode
& MAY_EXEC
)
2962 args
.access
|= NFS4_ACCESS_EXECUTE
;
2965 res
.fattr
= nfs_alloc_fattr();
2966 if (res
.fattr
== NULL
)
2969 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2971 nfs_access_set_mask(entry
, res
.access
);
2972 nfs_refresh_inode(inode
, res
.fattr
);
2974 nfs_free_fattr(res
.fattr
);
2978 static int nfs4_proc_access(struct inode
*inode
, struct nfs_access_entry
*entry
)
2980 struct nfs4_exception exception
= { };
2983 err
= nfs4_handle_exception(NFS_SERVER(inode
),
2984 _nfs4_proc_access(inode
, entry
),
2986 } while (exception
.retry
);
2991 * TODO: For the time being, we don't try to get any attributes
2992 * along with any of the zero-copy operations READ, READDIR,
2995 * In the case of the first three, we want to put the GETATTR
2996 * after the read-type operation -- this is because it is hard
2997 * to predict the length of a GETATTR response in v4, and thus
2998 * align the READ data correctly. This means that the GETATTR
2999 * may end up partially falling into the page cache, and we should
3000 * shift it into the 'tail' of the xdr_buf before processing.
3001 * To do this efficiently, we need to know the total length
3002 * of data received, which doesn't seem to be available outside
3005 * In the case of WRITE, we also want to put the GETATTR after
3006 * the operation -- in this case because we want to make sure
3007 * we get the post-operation mtime and size.
3009 * Both of these changes to the XDR layer would in fact be quite
3010 * minor, but I decided to leave them for a subsequent patch.
3012 static int _nfs4_proc_readlink(struct inode
*inode
, struct page
*page
,
3013 unsigned int pgbase
, unsigned int pglen
)
3015 struct nfs4_readlink args
= {
3016 .fh
= NFS_FH(inode
),
3021 struct nfs4_readlink_res res
;
3022 struct rpc_message msg
= {
3023 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READLINK
],
3028 return nfs4_call_sync(NFS_SERVER(inode
)->client
, NFS_SERVER(inode
), &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3031 static int nfs4_proc_readlink(struct inode
*inode
, struct page
*page
,
3032 unsigned int pgbase
, unsigned int pglen
)
3034 struct nfs4_exception exception
= { };
3037 err
= nfs4_handle_exception(NFS_SERVER(inode
),
3038 _nfs4_proc_readlink(inode
, page
, pgbase
, pglen
),
3040 } while (exception
.retry
);
3045 * This is just for mknod. open(O_CREAT) will always do ->open_context().
3048 nfs4_proc_create(struct inode
*dir
, struct dentry
*dentry
, struct iattr
*sattr
,
3051 struct nfs4_label
*ilabel
= NULL
;
3052 struct nfs_open_context
*ctx
;
3053 struct nfs4_state
*state
;
3056 ctx
= alloc_nfs_open_context(dentry
, FMODE_READ
);
3058 return PTR_ERR(ctx
);
3060 sattr
->ia_mode
&= ~current_umask();
3061 state
= nfs4_do_open(dir
, dentry
, ctx
->mode
,
3062 flags
, sattr
, ilabel
, ctx
->cred
,
3063 &ctx
->mdsthreshold
);
3065 if (IS_ERR(state
)) {
3066 status
= PTR_ERR(state
);
3069 d_add(dentry
, igrab(state
->inode
));
3070 nfs_set_verifier(dentry
, nfs_save_change_attribute(dir
));
3073 put_nfs_open_context(ctx
);
3077 static int _nfs4_proc_remove(struct inode
*dir
, struct qstr
*name
)
3079 struct nfs_server
*server
= NFS_SERVER(dir
);
3080 struct nfs_removeargs args
= {
3084 struct nfs_removeres res
= {
3087 struct rpc_message msg
= {
3088 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_REMOVE
],
3094 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 1);
3096 update_changeattr(dir
, &res
.cinfo
);
3100 static int nfs4_proc_remove(struct inode
*dir
, struct qstr
*name
)
3102 struct nfs4_exception exception
= { };
3105 err
= nfs4_handle_exception(NFS_SERVER(dir
),
3106 _nfs4_proc_remove(dir
, name
),
3108 } while (exception
.retry
);
3112 static void nfs4_proc_unlink_setup(struct rpc_message
*msg
, struct inode
*dir
)
3114 struct nfs_server
*server
= NFS_SERVER(dir
);
3115 struct nfs_removeargs
*args
= msg
->rpc_argp
;
3116 struct nfs_removeres
*res
= msg
->rpc_resp
;
3118 res
->server
= server
;
3119 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_REMOVE
];
3120 nfs41_init_sequence(&args
->seq_args
, &res
->seq_res
, 1);
3123 static void nfs4_proc_unlink_rpc_prepare(struct rpc_task
*task
, struct nfs_unlinkdata
*data
)
3125 nfs4_setup_sequence(NFS_SERVER(data
->dir
),
3126 &data
->args
.seq_args
,
3131 static int nfs4_proc_unlink_done(struct rpc_task
*task
, struct inode
*dir
)
3133 struct nfs_removeres
*res
= task
->tk_msg
.rpc_resp
;
3135 if (!nfs4_sequence_done(task
, &res
->seq_res
))
3137 if (nfs4_async_handle_error(task
, res
->server
, NULL
) == -EAGAIN
)
3139 update_changeattr(dir
, &res
->cinfo
);
3143 static void nfs4_proc_rename_setup(struct rpc_message
*msg
, struct inode
*dir
)
3145 struct nfs_server
*server
= NFS_SERVER(dir
);
3146 struct nfs_renameargs
*arg
= msg
->rpc_argp
;
3147 struct nfs_renameres
*res
= msg
->rpc_resp
;
3149 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENAME
];
3150 res
->server
= server
;
3151 nfs41_init_sequence(&arg
->seq_args
, &res
->seq_res
, 1);
3154 static void nfs4_proc_rename_rpc_prepare(struct rpc_task
*task
, struct nfs_renamedata
*data
)
3156 nfs4_setup_sequence(NFS_SERVER(data
->old_dir
),
3157 &data
->args
.seq_args
,
3162 static int nfs4_proc_rename_done(struct rpc_task
*task
, struct inode
*old_dir
,
3163 struct inode
*new_dir
)
3165 struct nfs_renameres
*res
= task
->tk_msg
.rpc_resp
;
3167 if (!nfs4_sequence_done(task
, &res
->seq_res
))
3169 if (nfs4_async_handle_error(task
, res
->server
, NULL
) == -EAGAIN
)
3172 update_changeattr(old_dir
, &res
->old_cinfo
);
3173 update_changeattr(new_dir
, &res
->new_cinfo
);
3177 static int _nfs4_proc_rename(struct inode
*old_dir
, struct qstr
*old_name
,
3178 struct inode
*new_dir
, struct qstr
*new_name
)
3180 struct nfs_server
*server
= NFS_SERVER(old_dir
);
3181 struct nfs_renameargs arg
= {
3182 .old_dir
= NFS_FH(old_dir
),
3183 .new_dir
= NFS_FH(new_dir
),
3184 .old_name
= old_name
,
3185 .new_name
= new_name
,
3187 struct nfs_renameres res
= {
3190 struct rpc_message msg
= {
3191 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENAME
],
3195 int status
= -ENOMEM
;
3197 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
3199 update_changeattr(old_dir
, &res
.old_cinfo
);
3200 update_changeattr(new_dir
, &res
.new_cinfo
);
3205 static int nfs4_proc_rename(struct inode
*old_dir
, struct qstr
*old_name
,
3206 struct inode
*new_dir
, struct qstr
*new_name
)
3208 struct nfs4_exception exception
= { };
3211 err
= nfs4_handle_exception(NFS_SERVER(old_dir
),
3212 _nfs4_proc_rename(old_dir
, old_name
,
3215 } while (exception
.retry
);
3219 static int _nfs4_proc_link(struct inode
*inode
, struct inode
*dir
, struct qstr
*name
)
3221 struct nfs_server
*server
= NFS_SERVER(inode
);
3222 struct nfs4_link_arg arg
= {
3223 .fh
= NFS_FH(inode
),
3224 .dir_fh
= NFS_FH(dir
),
3226 .bitmask
= server
->attr_bitmask
,
3228 struct nfs4_link_res res
= {
3232 struct rpc_message msg
= {
3233 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LINK
],
3237 int status
= -ENOMEM
;
3239 res
.fattr
= nfs_alloc_fattr();
3240 if (res
.fattr
== NULL
)
3243 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
3245 update_changeattr(dir
, &res
.cinfo
);
3246 nfs_post_op_update_inode(inode
, res
.fattr
);
3249 nfs_free_fattr(res
.fattr
);
3253 static int nfs4_proc_link(struct inode
*inode
, struct inode
*dir
, struct qstr
*name
)
3255 struct nfs4_exception exception
= { };
3258 err
= nfs4_handle_exception(NFS_SERVER(inode
),
3259 _nfs4_proc_link(inode
, dir
, name
),
3261 } while (exception
.retry
);
3265 struct nfs4_createdata
{
3266 struct rpc_message msg
;
3267 struct nfs4_create_arg arg
;
3268 struct nfs4_create_res res
;
3270 struct nfs_fattr fattr
;
3271 struct nfs4_label
*label
;
3274 static struct nfs4_createdata
*nfs4_alloc_createdata(struct inode
*dir
,
3275 struct qstr
*name
, struct iattr
*sattr
, u32 ftype
)
3277 struct nfs4_createdata
*data
;
3279 data
= kzalloc(sizeof(*data
), GFP_KERNEL
);
3281 struct nfs_server
*server
= NFS_SERVER(dir
);
3283 data
->msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CREATE
];
3284 data
->msg
.rpc_argp
= &data
->arg
;
3285 data
->msg
.rpc_resp
= &data
->res
;
3286 data
->arg
.dir_fh
= NFS_FH(dir
);
3287 data
->arg
.server
= server
;
3288 data
->arg
.name
= name
;
3289 data
->arg
.attrs
= sattr
;
3290 data
->arg
.ftype
= ftype
;
3291 data
->arg
.bitmask
= server
->attr_bitmask
;
3292 data
->res
.server
= server
;
3293 data
->res
.fh
= &data
->fh
;
3294 data
->res
.fattr
= &data
->fattr
;
3295 data
->res
.label
= data
->label
;
3296 nfs_fattr_init(data
->res
.fattr
);
3301 static int nfs4_do_create(struct inode
*dir
, struct dentry
*dentry
, struct nfs4_createdata
*data
)
3303 int status
= nfs4_call_sync(NFS_SERVER(dir
)->client
, NFS_SERVER(dir
), &data
->msg
,
3304 &data
->arg
.seq_args
, &data
->res
.seq_res
, 1);
3306 update_changeattr(dir
, &data
->res
.dir_cinfo
);
3307 status
= nfs_instantiate(dentry
, data
->res
.fh
, data
->res
.fattr
, data
->res
.label
);
3312 static void nfs4_free_createdata(struct nfs4_createdata
*data
)
3317 static int _nfs4_proc_symlink(struct inode
*dir
, struct dentry
*dentry
,
3318 struct page
*page
, unsigned int len
, struct iattr
*sattr
,
3319 struct nfs4_label
*label
)
3321 struct nfs4_createdata
*data
;
3322 int status
= -ENAMETOOLONG
;
3324 if (len
> NFS4_MAXPATHLEN
)
3328 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4LNK
);
3332 data
->msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SYMLINK
];
3333 data
->arg
.u
.symlink
.pages
= &page
;
3334 data
->arg
.u
.symlink
.len
= len
;
3335 data
->arg
.label
= label
;
3337 status
= nfs4_do_create(dir
, dentry
, data
);
3339 nfs4_free_createdata(data
);
3344 static int nfs4_proc_symlink(struct inode
*dir
, struct dentry
*dentry
,
3345 struct page
*page
, unsigned int len
, struct iattr
*sattr
)
3347 struct nfs4_exception exception
= { };
3348 struct nfs4_label
*label
= NULL
;
3351 err
= nfs4_handle_exception(NFS_SERVER(dir
),
3352 _nfs4_proc_symlink(dir
, dentry
, page
,
3355 } while (exception
.retry
);
3359 static int _nfs4_proc_mkdir(struct inode
*dir
, struct dentry
*dentry
,
3360 struct iattr
*sattr
, struct nfs4_label
*label
)
3362 struct nfs4_createdata
*data
;
3363 int status
= -ENOMEM
;
3365 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4DIR
);
3369 data
->arg
.label
= label
;
3370 status
= nfs4_do_create(dir
, dentry
, data
);
3372 nfs4_free_createdata(data
);
3377 static int nfs4_proc_mkdir(struct inode
*dir
, struct dentry
*dentry
,
3378 struct iattr
*sattr
)
3380 struct nfs4_exception exception
= { };
3381 struct nfs4_label
*label
= NULL
;
3384 sattr
->ia_mode
&= ~current_umask();
3386 err
= nfs4_handle_exception(NFS_SERVER(dir
),
3387 _nfs4_proc_mkdir(dir
, dentry
, sattr
, label
),
3389 } while (exception
.retry
);
3393 static int _nfs4_proc_readdir(struct dentry
*dentry
, struct rpc_cred
*cred
,
3394 u64 cookie
, struct page
**pages
, unsigned int count
, int plus
)
3396 struct inode
*dir
= dentry
->d_inode
;
3397 struct nfs4_readdir_arg args
= {
3402 .bitmask
= NFS_SERVER(dentry
->d_inode
)->attr_bitmask
,
3405 struct nfs4_readdir_res res
;
3406 struct rpc_message msg
= {
3407 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READDIR
],
3414 dprintk("%s: dentry = %s/%s, cookie = %Lu\n", __func__
,
3415 dentry
->d_parent
->d_name
.name
,
3416 dentry
->d_name
.name
,
3417 (unsigned long long)cookie
);
3418 nfs4_setup_readdir(cookie
, NFS_I(dir
)->cookieverf
, dentry
, &args
);
3419 res
.pgbase
= args
.pgbase
;
3420 status
= nfs4_call_sync(NFS_SERVER(dir
)->client
, NFS_SERVER(dir
), &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3422 memcpy(NFS_I(dir
)->cookieverf
, res
.verifier
.data
, NFS4_VERIFIER_SIZE
);
3423 status
+= args
.pgbase
;
3426 nfs_invalidate_atime(dir
);
3428 dprintk("%s: returns %d\n", __func__
, status
);
3432 static int nfs4_proc_readdir(struct dentry
*dentry
, struct rpc_cred
*cred
,
3433 u64 cookie
, struct page
**pages
, unsigned int count
, int plus
)
3435 struct nfs4_exception exception
= { };
3438 err
= nfs4_handle_exception(NFS_SERVER(dentry
->d_inode
),
3439 _nfs4_proc_readdir(dentry
, cred
, cookie
,
3440 pages
, count
, plus
),
3442 } while (exception
.retry
);
3446 static int _nfs4_proc_mknod(struct inode
*dir
, struct dentry
*dentry
,
3447 struct iattr
*sattr
, dev_t rdev
)
3449 struct nfs4_createdata
*data
;
3450 int mode
= sattr
->ia_mode
;
3451 int status
= -ENOMEM
;
3453 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4SOCK
);
3458 data
->arg
.ftype
= NF4FIFO
;
3459 else if (S_ISBLK(mode
)) {
3460 data
->arg
.ftype
= NF4BLK
;
3461 data
->arg
.u
.device
.specdata1
= MAJOR(rdev
);
3462 data
->arg
.u
.device
.specdata2
= MINOR(rdev
);
3464 else if (S_ISCHR(mode
)) {
3465 data
->arg
.ftype
= NF4CHR
;
3466 data
->arg
.u
.device
.specdata1
= MAJOR(rdev
);
3467 data
->arg
.u
.device
.specdata2
= MINOR(rdev
);
3468 } else if (!S_ISSOCK(mode
)) {
3473 status
= nfs4_do_create(dir
, dentry
, data
);
3475 nfs4_free_createdata(data
);
3480 static int nfs4_proc_mknod(struct inode
*dir
, struct dentry
*dentry
,
3481 struct iattr
*sattr
, dev_t rdev
)
3483 struct nfs4_exception exception
= { };
3486 sattr
->ia_mode
&= ~current_umask();
3488 err
= nfs4_handle_exception(NFS_SERVER(dir
),
3489 _nfs4_proc_mknod(dir
, dentry
, sattr
, rdev
),
3491 } while (exception
.retry
);
3495 static int _nfs4_proc_statfs(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3496 struct nfs_fsstat
*fsstat
)
3498 struct nfs4_statfs_arg args
= {
3500 .bitmask
= server
->attr_bitmask
,
3502 struct nfs4_statfs_res res
= {
3505 struct rpc_message msg
= {
3506 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_STATFS
],
3511 nfs_fattr_init(fsstat
->fattr
);
3512 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3515 static int nfs4_proc_statfs(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsstat
*fsstat
)
3517 struct nfs4_exception exception
= { };
3520 err
= nfs4_handle_exception(server
,
3521 _nfs4_proc_statfs(server
, fhandle
, fsstat
),
3523 } while (exception
.retry
);
3527 static int _nfs4_do_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3528 struct nfs_fsinfo
*fsinfo
)
3530 struct nfs4_fsinfo_arg args
= {
3532 .bitmask
= server
->attr_bitmask
,
3534 struct nfs4_fsinfo_res res
= {
3537 struct rpc_message msg
= {
3538 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FSINFO
],
3543 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3546 static int nfs4_do_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsinfo
*fsinfo
)
3548 struct nfs4_exception exception
= { };
3549 unsigned long now
= jiffies
;
3553 err
= _nfs4_do_fsinfo(server
, fhandle
, fsinfo
);
3555 struct nfs_client
*clp
= server
->nfs_client
;
3557 spin_lock(&clp
->cl_lock
);
3558 clp
->cl_lease_time
= fsinfo
->lease_time
* HZ
;
3559 clp
->cl_last_renewal
= now
;
3560 spin_unlock(&clp
->cl_lock
);
3563 err
= nfs4_handle_exception(server
, err
, &exception
);
3564 } while (exception
.retry
);
3568 static int nfs4_proc_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsinfo
*fsinfo
)
3572 nfs_fattr_init(fsinfo
->fattr
);
3573 error
= nfs4_do_fsinfo(server
, fhandle
, fsinfo
);
3575 /* block layout checks this! */
3576 server
->pnfs_blksize
= fsinfo
->blksize
;
3577 set_pnfs_layoutdriver(server
, fhandle
, fsinfo
->layouttype
);
3583 static int _nfs4_proc_pathconf(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3584 struct nfs_pathconf
*pathconf
)
3586 struct nfs4_pathconf_arg args
= {
3588 .bitmask
= server
->attr_bitmask
,
3590 struct nfs4_pathconf_res res
= {
3591 .pathconf
= pathconf
,
3593 struct rpc_message msg
= {
3594 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_PATHCONF
],
3599 /* None of the pathconf attributes are mandatory to implement */
3600 if ((args
.bitmask
[0] & nfs4_pathconf_bitmap
[0]) == 0) {
3601 memset(pathconf
, 0, sizeof(*pathconf
));
3605 nfs_fattr_init(pathconf
->fattr
);
3606 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3609 static int nfs4_proc_pathconf(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3610 struct nfs_pathconf
*pathconf
)
3612 struct nfs4_exception exception
= { };
3616 err
= nfs4_handle_exception(server
,
3617 _nfs4_proc_pathconf(server
, fhandle
, pathconf
),
3619 } while (exception
.retry
);
3623 int nfs4_set_rw_stateid(nfs4_stateid
*stateid
,
3624 const struct nfs_open_context
*ctx
,
3625 const struct nfs_lock_context
*l_ctx
,
3628 const struct nfs_lockowner
*lockowner
= NULL
;
3631 lockowner
= &l_ctx
->lockowner
;
3632 return nfs4_select_rw_stateid(stateid
, ctx
->state
, fmode
, lockowner
);
3634 EXPORT_SYMBOL_GPL(nfs4_set_rw_stateid
);
3636 static bool nfs4_stateid_is_current(nfs4_stateid
*stateid
,
3637 const struct nfs_open_context
*ctx
,
3638 const struct nfs_lock_context
*l_ctx
,
3641 nfs4_stateid current_stateid
;
3643 if (nfs4_set_rw_stateid(¤t_stateid
, ctx
, l_ctx
, fmode
))
3645 return nfs4_stateid_match(stateid
, ¤t_stateid
);
3648 static bool nfs4_error_stateid_expired(int err
)
3651 case -NFS4ERR_DELEG_REVOKED
:
3652 case -NFS4ERR_ADMIN_REVOKED
:
3653 case -NFS4ERR_BAD_STATEID
:
3654 case -NFS4ERR_STALE_STATEID
:
3655 case -NFS4ERR_OLD_STATEID
:
3656 case -NFS4ERR_OPENMODE
:
3657 case -NFS4ERR_EXPIRED
:
3663 void __nfs4_read_done_cb(struct nfs_read_data
*data
)
3665 nfs_invalidate_atime(data
->header
->inode
);
3668 static int nfs4_read_done_cb(struct rpc_task
*task
, struct nfs_read_data
*data
)
3670 struct nfs_server
*server
= NFS_SERVER(data
->header
->inode
);
3672 if (nfs4_async_handle_error(task
, server
, data
->args
.context
->state
) == -EAGAIN
) {
3673 rpc_restart_call_prepare(task
);
3677 __nfs4_read_done_cb(data
);
3678 if (task
->tk_status
> 0)
3679 renew_lease(server
, data
->timestamp
);
3683 static bool nfs4_read_stateid_changed(struct rpc_task
*task
,
3684 struct nfs_readargs
*args
)
3687 if (!nfs4_error_stateid_expired(task
->tk_status
) ||
3688 nfs4_stateid_is_current(&args
->stateid
,
3693 rpc_restart_call_prepare(task
);
3697 static int nfs4_read_done(struct rpc_task
*task
, struct nfs_read_data
*data
)
3700 dprintk("--> %s\n", __func__
);
3702 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
3704 if (nfs4_read_stateid_changed(task
, &data
->args
))
3706 return data
->read_done_cb
? data
->read_done_cb(task
, data
) :
3707 nfs4_read_done_cb(task
, data
);
3710 static void nfs4_proc_read_setup(struct nfs_read_data
*data
, struct rpc_message
*msg
)
3712 data
->timestamp
= jiffies
;
3713 data
->read_done_cb
= nfs4_read_done_cb
;
3714 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READ
];
3715 nfs41_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 0);
3718 static void nfs4_proc_read_rpc_prepare(struct rpc_task
*task
, struct nfs_read_data
*data
)
3720 if (nfs4_setup_sequence(NFS_SERVER(data
->header
->inode
),
3721 &data
->args
.seq_args
,
3725 nfs4_set_rw_stateid(&data
->args
.stateid
, data
->args
.context
,
3726 data
->args
.lock_context
, FMODE_READ
);
3729 static int nfs4_write_done_cb(struct rpc_task
*task
, struct nfs_write_data
*data
)
3731 struct inode
*inode
= data
->header
->inode
;
3733 if (nfs4_async_handle_error(task
, NFS_SERVER(inode
), data
->args
.context
->state
) == -EAGAIN
) {
3734 rpc_restart_call_prepare(task
);
3737 if (task
->tk_status
>= 0) {
3738 renew_lease(NFS_SERVER(inode
), data
->timestamp
);
3739 nfs_post_op_update_inode_force_wcc(inode
, &data
->fattr
);
3744 static bool nfs4_write_stateid_changed(struct rpc_task
*task
,
3745 struct nfs_writeargs
*args
)
3748 if (!nfs4_error_stateid_expired(task
->tk_status
) ||
3749 nfs4_stateid_is_current(&args
->stateid
,
3754 rpc_restart_call_prepare(task
);
3758 static int nfs4_write_done(struct rpc_task
*task
, struct nfs_write_data
*data
)
3760 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
3762 if (nfs4_write_stateid_changed(task
, &data
->args
))
3764 return data
->write_done_cb
? data
->write_done_cb(task
, data
) :
3765 nfs4_write_done_cb(task
, data
);
3769 bool nfs4_write_need_cache_consistency_data(const struct nfs_write_data
*data
)
3771 const struct nfs_pgio_header
*hdr
= data
->header
;
3773 /* Don't request attributes for pNFS or O_DIRECT writes */
3774 if (data
->ds_clp
!= NULL
|| hdr
->dreq
!= NULL
)
3776 /* Otherwise, request attributes if and only if we don't hold
3779 return nfs4_have_delegation(hdr
->inode
, FMODE_READ
) == 0;
3782 static void nfs4_proc_write_setup(struct nfs_write_data
*data
, struct rpc_message
*msg
)
3784 struct nfs_server
*server
= NFS_SERVER(data
->header
->inode
);
3786 if (!nfs4_write_need_cache_consistency_data(data
)) {
3787 data
->args
.bitmask
= NULL
;
3788 data
->res
.fattr
= NULL
;
3790 data
->args
.bitmask
= server
->cache_consistency_bitmask
;
3792 if (!data
->write_done_cb
)
3793 data
->write_done_cb
= nfs4_write_done_cb
;
3794 data
->res
.server
= server
;
3795 data
->timestamp
= jiffies
;
3797 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_WRITE
];
3798 nfs41_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
3801 static void nfs4_proc_write_rpc_prepare(struct rpc_task
*task
, struct nfs_write_data
*data
)
3803 if (nfs4_setup_sequence(NFS_SERVER(data
->header
->inode
),
3804 &data
->args
.seq_args
,
3808 nfs4_set_rw_stateid(&data
->args
.stateid
, data
->args
.context
,
3809 data
->args
.lock_context
, FMODE_WRITE
);
3812 static void nfs4_proc_commit_rpc_prepare(struct rpc_task
*task
, struct nfs_commit_data
*data
)
3814 nfs4_setup_sequence(NFS_SERVER(data
->inode
),
3815 &data
->args
.seq_args
,
3820 static int nfs4_commit_done_cb(struct rpc_task
*task
, struct nfs_commit_data
*data
)
3822 struct inode
*inode
= data
->inode
;
3824 if (nfs4_async_handle_error(task
, NFS_SERVER(inode
), NULL
) == -EAGAIN
) {
3825 rpc_restart_call_prepare(task
);
3831 static int nfs4_commit_done(struct rpc_task
*task
, struct nfs_commit_data
*data
)
3833 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
3835 return data
->commit_done_cb(task
, data
);
3838 static void nfs4_proc_commit_setup(struct nfs_commit_data
*data
, struct rpc_message
*msg
)
3840 struct nfs_server
*server
= NFS_SERVER(data
->inode
);
3842 if (data
->commit_done_cb
== NULL
)
3843 data
->commit_done_cb
= nfs4_commit_done_cb
;
3844 data
->res
.server
= server
;
3845 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_COMMIT
];
3846 nfs41_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
3849 struct nfs4_renewdata
{
3850 struct nfs_client
*client
;
3851 unsigned long timestamp
;
3855 * nfs4_proc_async_renew(): This is not one of the nfs_rpc_ops; it is a special
3856 * standalone procedure for queueing an asynchronous RENEW.
3858 static void nfs4_renew_release(void *calldata
)
3860 struct nfs4_renewdata
*data
= calldata
;
3861 struct nfs_client
*clp
= data
->client
;
3863 if (atomic_read(&clp
->cl_count
) > 1)
3864 nfs4_schedule_state_renewal(clp
);
3865 nfs_put_client(clp
);
3869 static void nfs4_renew_done(struct rpc_task
*task
, void *calldata
)
3871 struct nfs4_renewdata
*data
= calldata
;
3872 struct nfs_client
*clp
= data
->client
;
3873 unsigned long timestamp
= data
->timestamp
;
3875 if (task
->tk_status
< 0) {
3876 /* Unless we're shutting down, schedule state recovery! */
3877 if (test_bit(NFS_CS_RENEWD
, &clp
->cl_res_state
) == 0)
3879 if (task
->tk_status
!= NFS4ERR_CB_PATH_DOWN
) {
3880 nfs4_schedule_lease_recovery(clp
);
3883 nfs4_schedule_path_down_recovery(clp
);
3885 do_renew_lease(clp
, timestamp
);
3888 static const struct rpc_call_ops nfs4_renew_ops
= {
3889 .rpc_call_done
= nfs4_renew_done
,
3890 .rpc_release
= nfs4_renew_release
,
3893 static int nfs4_proc_async_renew(struct nfs_client
*clp
, struct rpc_cred
*cred
, unsigned renew_flags
)
3895 struct rpc_message msg
= {
3896 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENEW
],
3900 struct nfs4_renewdata
*data
;
3902 if (renew_flags
== 0)
3904 if (!atomic_inc_not_zero(&clp
->cl_count
))
3906 data
= kmalloc(sizeof(*data
), GFP_NOFS
);
3910 data
->timestamp
= jiffies
;
3911 return rpc_call_async(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
,
3912 &nfs4_renew_ops
, data
);
3915 static int nfs4_proc_renew(struct nfs_client
*clp
, struct rpc_cred
*cred
)
3917 struct rpc_message msg
= {
3918 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENEW
],
3922 unsigned long now
= jiffies
;
3925 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
3928 do_renew_lease(clp
, now
);
3932 static inline int nfs4_server_supports_acls(struct nfs_server
*server
)
3934 return (server
->caps
& NFS_CAP_ACLS
)
3935 && (server
->acl_bitmask
& ACL4_SUPPORT_ALLOW_ACL
)
3936 && (server
->acl_bitmask
& ACL4_SUPPORT_DENY_ACL
);
3939 /* Assuming that XATTR_SIZE_MAX is a multiple of PAGE_SIZE, and that
3940 * it's OK to put sizeof(void) * (XATTR_SIZE_MAX/PAGE_SIZE) bytes on
3943 #define NFS4ACL_MAXPAGES DIV_ROUND_UP(XATTR_SIZE_MAX, PAGE_SIZE)
3945 static int buf_to_pages_noslab(const void *buf
, size_t buflen
,
3946 struct page
**pages
, unsigned int *pgbase
)
3948 struct page
*newpage
, **spages
;
3954 len
= min_t(size_t, PAGE_SIZE
, buflen
);
3955 newpage
= alloc_page(GFP_KERNEL
);
3957 if (newpage
== NULL
)
3959 memcpy(page_address(newpage
), buf
, len
);
3964 } while (buflen
!= 0);
3970 __free_page(spages
[rc
-1]);
3974 struct nfs4_cached_acl
{
3980 static void nfs4_set_cached_acl(struct inode
*inode
, struct nfs4_cached_acl
*acl
)
3982 struct nfs_inode
*nfsi
= NFS_I(inode
);
3984 spin_lock(&inode
->i_lock
);
3985 kfree(nfsi
->nfs4_acl
);
3986 nfsi
->nfs4_acl
= acl
;
3987 spin_unlock(&inode
->i_lock
);
3990 static void nfs4_zap_acl_attr(struct inode
*inode
)
3992 nfs4_set_cached_acl(inode
, NULL
);
3995 static inline ssize_t
nfs4_read_cached_acl(struct inode
*inode
, char *buf
, size_t buflen
)
3997 struct nfs_inode
*nfsi
= NFS_I(inode
);
3998 struct nfs4_cached_acl
*acl
;
4001 spin_lock(&inode
->i_lock
);
4002 acl
= nfsi
->nfs4_acl
;
4005 if (buf
== NULL
) /* user is just asking for length */
4007 if (acl
->cached
== 0)
4009 ret
= -ERANGE
; /* see getxattr(2) man page */
4010 if (acl
->len
> buflen
)
4012 memcpy(buf
, acl
->data
, acl
->len
);
4016 spin_unlock(&inode
->i_lock
);
4020 static void nfs4_write_cached_acl(struct inode
*inode
, struct page
**pages
, size_t pgbase
, size_t acl_len
)
4022 struct nfs4_cached_acl
*acl
;
4023 size_t buflen
= sizeof(*acl
) + acl_len
;
4025 if (buflen
<= PAGE_SIZE
) {
4026 acl
= kmalloc(buflen
, GFP_KERNEL
);
4030 _copy_from_pages(acl
->data
, pages
, pgbase
, acl_len
);
4032 acl
= kmalloc(sizeof(*acl
), GFP_KERNEL
);
4039 nfs4_set_cached_acl(inode
, acl
);
4043 * The getxattr API returns the required buffer length when called with a
4044 * NULL buf. The NFSv4 acl tool then calls getxattr again after allocating
4045 * the required buf. On a NULL buf, we send a page of data to the server
4046 * guessing that the ACL request can be serviced by a page. If so, we cache
4047 * up to the page of ACL data, and the 2nd call to getxattr is serviced by
4048 * the cache. If not so, we throw away the page, and cache the required
4049 * length. The next getxattr call will then produce another round trip to
4050 * the server, this time with the input buf of the required size.
4052 static ssize_t
__nfs4_get_acl_uncached(struct inode
*inode
, void *buf
, size_t buflen
)
4054 struct page
*pages
[NFS4ACL_MAXPAGES
] = {NULL
, };
4055 struct nfs_getaclargs args
= {
4056 .fh
= NFS_FH(inode
),
4060 struct nfs_getaclres res
= {
4063 struct rpc_message msg
= {
4064 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETACL
],
4068 unsigned int npages
= DIV_ROUND_UP(buflen
, PAGE_SIZE
);
4069 int ret
= -ENOMEM
, i
;
4071 /* As long as we're doing a round trip to the server anyway,
4072 * let's be prepared for a page of acl data. */
4075 if (npages
> ARRAY_SIZE(pages
))
4078 for (i
= 0; i
< npages
; i
++) {
4079 pages
[i
] = alloc_page(GFP_KERNEL
);
4084 /* for decoding across pages */
4085 res
.acl_scratch
= alloc_page(GFP_KERNEL
);
4086 if (!res
.acl_scratch
)
4089 args
.acl_len
= npages
* PAGE_SIZE
;
4090 args
.acl_pgbase
= 0;
4092 dprintk("%s buf %p buflen %zu npages %d args.acl_len %zu\n",
4093 __func__
, buf
, buflen
, npages
, args
.acl_len
);
4094 ret
= nfs4_call_sync(NFS_SERVER(inode
)->client
, NFS_SERVER(inode
),
4095 &msg
, &args
.seq_args
, &res
.seq_res
, 0);
4099 /* Handle the case where the passed-in buffer is too short */
4100 if (res
.acl_flags
& NFS4_ACL_TRUNC
) {
4101 /* Did the user only issue a request for the acl length? */
4107 nfs4_write_cached_acl(inode
, pages
, res
.acl_data_offset
, res
.acl_len
);
4109 if (res
.acl_len
> buflen
) {
4113 _copy_from_pages(buf
, pages
, res
.acl_data_offset
, res
.acl_len
);
4118 for (i
= 0; i
< npages
; i
++)
4120 __free_page(pages
[i
]);
4121 if (res
.acl_scratch
)
4122 __free_page(res
.acl_scratch
);
4126 static ssize_t
nfs4_get_acl_uncached(struct inode
*inode
, void *buf
, size_t buflen
)
4128 struct nfs4_exception exception
= { };
4131 ret
= __nfs4_get_acl_uncached(inode
, buf
, buflen
);
4134 ret
= nfs4_handle_exception(NFS_SERVER(inode
), ret
, &exception
);
4135 } while (exception
.retry
);
4139 static ssize_t
nfs4_proc_get_acl(struct inode
*inode
, void *buf
, size_t buflen
)
4141 struct nfs_server
*server
= NFS_SERVER(inode
);
4144 if (!nfs4_server_supports_acls(server
))
4146 ret
= nfs_revalidate_inode(server
, inode
);
4149 if (NFS_I(inode
)->cache_validity
& NFS_INO_INVALID_ACL
)
4150 nfs_zap_acl_cache(inode
);
4151 ret
= nfs4_read_cached_acl(inode
, buf
, buflen
);
4153 /* -ENOENT is returned if there is no ACL or if there is an ACL
4154 * but no cached acl data, just the acl length */
4156 return nfs4_get_acl_uncached(inode
, buf
, buflen
);
4159 static int __nfs4_proc_set_acl(struct inode
*inode
, const void *buf
, size_t buflen
)
4161 struct nfs_server
*server
= NFS_SERVER(inode
);
4162 struct page
*pages
[NFS4ACL_MAXPAGES
];
4163 struct nfs_setaclargs arg
= {
4164 .fh
= NFS_FH(inode
),
4168 struct nfs_setaclres res
;
4169 struct rpc_message msg
= {
4170 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETACL
],
4174 unsigned int npages
= DIV_ROUND_UP(buflen
, PAGE_SIZE
);
4177 if (!nfs4_server_supports_acls(server
))
4179 if (npages
> ARRAY_SIZE(pages
))
4181 i
= buf_to_pages_noslab(buf
, buflen
, arg
.acl_pages
, &arg
.acl_pgbase
);
4184 nfs4_inode_return_delegation(inode
);
4185 ret
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
4188 * Free each page after tx, so the only ref left is
4189 * held by the network stack
4192 put_page(pages
[i
-1]);
4195 * Acl update can result in inode attribute update.
4196 * so mark the attribute cache invalid.
4198 spin_lock(&inode
->i_lock
);
4199 NFS_I(inode
)->cache_validity
|= NFS_INO_INVALID_ATTR
;
4200 spin_unlock(&inode
->i_lock
);
4201 nfs_access_zap_cache(inode
);
4202 nfs_zap_acl_cache(inode
);
4206 static int nfs4_proc_set_acl(struct inode
*inode
, const void *buf
, size_t buflen
)
4208 struct nfs4_exception exception
= { };
4211 err
= nfs4_handle_exception(NFS_SERVER(inode
),
4212 __nfs4_proc_set_acl(inode
, buf
, buflen
),
4214 } while (exception
.retry
);
4219 nfs4_async_handle_error(struct rpc_task
*task
, const struct nfs_server
*server
, struct nfs4_state
*state
)
4221 struct nfs_client
*clp
= server
->nfs_client
;
4223 if (task
->tk_status
>= 0)
4225 switch(task
->tk_status
) {
4226 case -NFS4ERR_DELEG_REVOKED
:
4227 case -NFS4ERR_ADMIN_REVOKED
:
4228 case -NFS4ERR_BAD_STATEID
:
4231 nfs_remove_bad_delegation(state
->inode
);
4232 case -NFS4ERR_OPENMODE
:
4235 if (nfs4_schedule_stateid_recovery(server
, state
) < 0)
4236 goto stateid_invalid
;
4237 goto wait_on_recovery
;
4238 case -NFS4ERR_EXPIRED
:
4239 if (state
!= NULL
) {
4240 if (nfs4_schedule_stateid_recovery(server
, state
) < 0)
4241 goto stateid_invalid
;
4243 case -NFS4ERR_STALE_STATEID
:
4244 case -NFS4ERR_STALE_CLIENTID
:
4245 nfs4_schedule_lease_recovery(clp
);
4246 goto wait_on_recovery
;
4247 #if defined(CONFIG_NFS_V4_1)
4248 case -NFS4ERR_BADSESSION
:
4249 case -NFS4ERR_BADSLOT
:
4250 case -NFS4ERR_BAD_HIGH_SLOT
:
4251 case -NFS4ERR_DEADSESSION
:
4252 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
4253 case -NFS4ERR_SEQ_FALSE_RETRY
:
4254 case -NFS4ERR_SEQ_MISORDERED
:
4255 dprintk("%s ERROR %d, Reset session\n", __func__
,
4257 nfs4_schedule_session_recovery(clp
->cl_session
, task
->tk_status
);
4258 task
->tk_status
= 0;
4260 #endif /* CONFIG_NFS_V4_1 */
4261 case -NFS4ERR_DELAY
:
4262 nfs_inc_server_stats(server
, NFSIOS_DELAY
);
4263 case -NFS4ERR_GRACE
:
4264 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
4265 task
->tk_status
= 0;
4267 case -NFS4ERR_RETRY_UNCACHED_REP
:
4268 case -NFS4ERR_OLD_STATEID
:
4269 task
->tk_status
= 0;
4272 task
->tk_status
= nfs4_map_errors(task
->tk_status
);
4275 task
->tk_status
= -EIO
;
4278 rpc_sleep_on(&clp
->cl_rpcwaitq
, task
, NULL
);
4279 if (test_bit(NFS4CLNT_MANAGER_RUNNING
, &clp
->cl_state
) == 0)
4280 rpc_wake_up_queued_task(&clp
->cl_rpcwaitq
, task
);
4281 task
->tk_status
= 0;
4285 static void nfs4_init_boot_verifier(const struct nfs_client
*clp
,
4286 nfs4_verifier
*bootverf
)
4290 if (test_bit(NFS4CLNT_PURGE_STATE
, &clp
->cl_state
)) {
4291 /* An impossible timestamp guarantees this value
4292 * will never match a generated boot time. */
4294 verf
[1] = (__be32
)(NSEC_PER_SEC
+ 1);
4296 struct nfs_net
*nn
= net_generic(clp
->cl_net
, nfs_net_id
);
4297 verf
[0] = (__be32
)nn
->boot_time
.tv_sec
;
4298 verf
[1] = (__be32
)nn
->boot_time
.tv_nsec
;
4300 memcpy(bootverf
->data
, verf
, sizeof(bootverf
->data
));
4304 nfs4_init_nonuniform_client_string(const struct nfs_client
*clp
,
4305 char *buf
, size_t len
)
4307 unsigned int result
;
4310 result
= scnprintf(buf
, len
, "Linux NFSv4.0 %s/%s %s",
4312 rpc_peeraddr2str(clp
->cl_rpcclient
,
4314 rpc_peeraddr2str(clp
->cl_rpcclient
,
4315 RPC_DISPLAY_PROTO
));
4321 nfs4_init_uniform_client_string(const struct nfs_client
*clp
,
4322 char *buf
, size_t len
)
4324 char *nodename
= clp
->cl_rpcclient
->cl_nodename
;
4326 if (nfs4_client_id_uniquifier
[0] != '\0')
4327 nodename
= nfs4_client_id_uniquifier
;
4328 return scnprintf(buf
, len
, "Linux NFSv%u.%u %s",
4329 clp
->rpc_ops
->version
, clp
->cl_minorversion
,
4334 * nfs4_proc_setclientid - Negotiate client ID
4335 * @clp: state data structure
4336 * @program: RPC program for NFSv4 callback service
4337 * @port: IP port number for NFS4 callback service
4338 * @cred: RPC credential to use for this call
4339 * @res: where to place the result
4341 * Returns zero, a negative errno, or a negative NFS4ERR status code.
4343 int nfs4_proc_setclientid(struct nfs_client
*clp
, u32 program
,
4344 unsigned short port
, struct rpc_cred
*cred
,
4345 struct nfs4_setclientid_res
*res
)
4347 nfs4_verifier sc_verifier
;
4348 struct nfs4_setclientid setclientid
= {
4349 .sc_verifier
= &sc_verifier
,
4351 .sc_cb_ident
= clp
->cl_cb_ident
,
4353 struct rpc_message msg
= {
4354 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETCLIENTID
],
4355 .rpc_argp
= &setclientid
,
4361 /* nfs_client_id4 */
4362 nfs4_init_boot_verifier(clp
, &sc_verifier
);
4363 if (test_bit(NFS_CS_MIGRATION
, &clp
->cl_flags
))
4364 setclientid
.sc_name_len
=
4365 nfs4_init_uniform_client_string(clp
,
4366 setclientid
.sc_name
,
4367 sizeof(setclientid
.sc_name
));
4369 setclientid
.sc_name_len
=
4370 nfs4_init_nonuniform_client_string(clp
,
4371 setclientid
.sc_name
,
4372 sizeof(setclientid
.sc_name
));
4375 setclientid
.sc_netid_len
= scnprintf(setclientid
.sc_netid
,
4376 sizeof(setclientid
.sc_netid
),
4377 rpc_peeraddr2str(clp
->cl_rpcclient
,
4378 RPC_DISPLAY_NETID
));
4380 setclientid
.sc_uaddr_len
= scnprintf(setclientid
.sc_uaddr
,
4381 sizeof(setclientid
.sc_uaddr
), "%s.%u.%u",
4382 clp
->cl_ipaddr
, port
>> 8, port
& 255);
4384 dprintk("NFS call setclientid auth=%s, '%.*s'\n",
4385 clp
->cl_rpcclient
->cl_auth
->au_ops
->au_name
,
4386 setclientid
.sc_name_len
, setclientid
.sc_name
);
4387 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
4388 dprintk("NFS reply setclientid: %d\n", status
);
4393 * nfs4_proc_setclientid_confirm - Confirm client ID
4394 * @clp: state data structure
4395 * @res: result of a previous SETCLIENTID
4396 * @cred: RPC credential to use for this call
4398 * Returns zero, a negative errno, or a negative NFS4ERR status code.
4400 int nfs4_proc_setclientid_confirm(struct nfs_client
*clp
,
4401 struct nfs4_setclientid_res
*arg
,
4402 struct rpc_cred
*cred
)
4404 struct rpc_message msg
= {
4405 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETCLIENTID_CONFIRM
],
4411 dprintk("NFS call setclientid_confirm auth=%s, (client ID %llx)\n",
4412 clp
->cl_rpcclient
->cl_auth
->au_ops
->au_name
,
4414 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
4415 dprintk("NFS reply setclientid_confirm: %d\n", status
);
4419 struct nfs4_delegreturndata
{
4420 struct nfs4_delegreturnargs args
;
4421 struct nfs4_delegreturnres res
;
4423 nfs4_stateid stateid
;
4424 unsigned long timestamp
;
4425 struct nfs_fattr fattr
;
4429 static void nfs4_delegreturn_done(struct rpc_task
*task
, void *calldata
)
4431 struct nfs4_delegreturndata
*data
= calldata
;
4433 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
4436 switch (task
->tk_status
) {
4437 case -NFS4ERR_STALE_STATEID
:
4438 case -NFS4ERR_EXPIRED
:
4440 renew_lease(data
->res
.server
, data
->timestamp
);
4443 if (nfs4_async_handle_error(task
, data
->res
.server
, NULL
) ==
4445 rpc_restart_call_prepare(task
);
4449 data
->rpc_status
= task
->tk_status
;
4452 static void nfs4_delegreturn_release(void *calldata
)
4457 #if defined(CONFIG_NFS_V4_1)
4458 static void nfs4_delegreturn_prepare(struct rpc_task
*task
, void *data
)
4460 struct nfs4_delegreturndata
*d_data
;
4462 d_data
= (struct nfs4_delegreturndata
*)data
;
4464 nfs4_setup_sequence(d_data
->res
.server
,
4465 &d_data
->args
.seq_args
,
4466 &d_data
->res
.seq_res
,
4469 #endif /* CONFIG_NFS_V4_1 */
4471 static const struct rpc_call_ops nfs4_delegreturn_ops
= {
4472 #if defined(CONFIG_NFS_V4_1)
4473 .rpc_call_prepare
= nfs4_delegreturn_prepare
,
4474 #endif /* CONFIG_NFS_V4_1 */
4475 .rpc_call_done
= nfs4_delegreturn_done
,
4476 .rpc_release
= nfs4_delegreturn_release
,
4479 static int _nfs4_proc_delegreturn(struct inode
*inode
, struct rpc_cred
*cred
, const nfs4_stateid
*stateid
, int issync
)
4481 struct nfs4_delegreturndata
*data
;
4482 struct nfs_server
*server
= NFS_SERVER(inode
);
4483 struct rpc_task
*task
;
4484 struct rpc_message msg
= {
4485 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DELEGRETURN
],
4488 struct rpc_task_setup task_setup_data
= {
4489 .rpc_client
= server
->client
,
4490 .rpc_message
= &msg
,
4491 .callback_ops
= &nfs4_delegreturn_ops
,
4492 .flags
= RPC_TASK_ASYNC
,
4496 data
= kzalloc(sizeof(*data
), GFP_NOFS
);
4499 nfs41_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
4500 data
->args
.fhandle
= &data
->fh
;
4501 data
->args
.stateid
= &data
->stateid
;
4502 data
->args
.bitmask
= server
->cache_consistency_bitmask
;
4503 nfs_copy_fh(&data
->fh
, NFS_FH(inode
));
4504 nfs4_stateid_copy(&data
->stateid
, stateid
);
4505 data
->res
.fattr
= &data
->fattr
;
4506 data
->res
.server
= server
;
4507 nfs_fattr_init(data
->res
.fattr
);
4508 data
->timestamp
= jiffies
;
4509 data
->rpc_status
= 0;
4511 task_setup_data
.callback_data
= data
;
4512 msg
.rpc_argp
= &data
->args
;
4513 msg
.rpc_resp
= &data
->res
;
4514 task
= rpc_run_task(&task_setup_data
);
4516 return PTR_ERR(task
);
4519 status
= nfs4_wait_for_completion_rpc_task(task
);
4522 status
= data
->rpc_status
;
4524 nfs_post_op_update_inode_force_wcc(inode
, &data
->fattr
);
4526 nfs_refresh_inode(inode
, &data
->fattr
);
4532 int nfs4_proc_delegreturn(struct inode
*inode
, struct rpc_cred
*cred
, const nfs4_stateid
*stateid
, int issync
)
4534 struct nfs_server
*server
= NFS_SERVER(inode
);
4535 struct nfs4_exception exception
= { };
4538 err
= _nfs4_proc_delegreturn(inode
, cred
, stateid
, issync
);
4540 case -NFS4ERR_STALE_STATEID
:
4541 case -NFS4ERR_EXPIRED
:
4545 err
= nfs4_handle_exception(server
, err
, &exception
);
4546 } while (exception
.retry
);
4550 #define NFS4_LOCK_MINTIMEOUT (1 * HZ)
4551 #define NFS4_LOCK_MAXTIMEOUT (30 * HZ)
4554 * sleep, with exponential backoff, and retry the LOCK operation.
4556 static unsigned long
4557 nfs4_set_lock_task_retry(unsigned long timeout
)
4559 freezable_schedule_timeout_killable(timeout
);
4561 if (timeout
> NFS4_LOCK_MAXTIMEOUT
)
4562 return NFS4_LOCK_MAXTIMEOUT
;
4566 static int _nfs4_proc_getlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
4568 struct inode
*inode
= state
->inode
;
4569 struct nfs_server
*server
= NFS_SERVER(inode
);
4570 struct nfs_client
*clp
= server
->nfs_client
;
4571 struct nfs_lockt_args arg
= {
4572 .fh
= NFS_FH(inode
),
4575 struct nfs_lockt_res res
= {
4578 struct rpc_message msg
= {
4579 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCKT
],
4582 .rpc_cred
= state
->owner
->so_cred
,
4584 struct nfs4_lock_state
*lsp
;
4587 arg
.lock_owner
.clientid
= clp
->cl_clientid
;
4588 status
= nfs4_set_lock_state(state
, request
);
4591 lsp
= request
->fl_u
.nfs4_fl
.owner
;
4592 arg
.lock_owner
.id
= lsp
->ls_seqid
.owner_id
;
4593 arg
.lock_owner
.s_dev
= server
->s_dev
;
4594 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
4597 request
->fl_type
= F_UNLCK
;
4599 case -NFS4ERR_DENIED
:
4602 request
->fl_ops
->fl_release_private(request
);
4607 static int nfs4_proc_getlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
4609 struct nfs4_exception exception
= { };
4613 err
= nfs4_handle_exception(NFS_SERVER(state
->inode
),
4614 _nfs4_proc_getlk(state
, cmd
, request
),
4616 } while (exception
.retry
);
4620 static int do_vfs_lock(struct file
*file
, struct file_lock
*fl
)
4623 switch (fl
->fl_flags
& (FL_POSIX
|FL_FLOCK
)) {
4625 res
= posix_lock_file_wait(file
, fl
);
4628 res
= flock_lock_file_wait(file
, fl
);
4636 struct nfs4_unlockdata
{
4637 struct nfs_locku_args arg
;
4638 struct nfs_locku_res res
;
4639 struct nfs4_lock_state
*lsp
;
4640 struct nfs_open_context
*ctx
;
4641 struct file_lock fl
;
4642 const struct nfs_server
*server
;
4643 unsigned long timestamp
;
4646 static struct nfs4_unlockdata
*nfs4_alloc_unlockdata(struct file_lock
*fl
,
4647 struct nfs_open_context
*ctx
,
4648 struct nfs4_lock_state
*lsp
,
4649 struct nfs_seqid
*seqid
)
4651 struct nfs4_unlockdata
*p
;
4652 struct inode
*inode
= lsp
->ls_state
->inode
;
4654 p
= kzalloc(sizeof(*p
), GFP_NOFS
);
4657 p
->arg
.fh
= NFS_FH(inode
);
4659 p
->arg
.seqid
= seqid
;
4660 p
->res
.seqid
= seqid
;
4661 p
->arg
.stateid
= &lsp
->ls_stateid
;
4663 atomic_inc(&lsp
->ls_count
);
4664 /* Ensure we don't close file until we're done freeing locks! */
4665 p
->ctx
= get_nfs_open_context(ctx
);
4666 memcpy(&p
->fl
, fl
, sizeof(p
->fl
));
4667 p
->server
= NFS_SERVER(inode
);
4671 static void nfs4_locku_release_calldata(void *data
)
4673 struct nfs4_unlockdata
*calldata
= data
;
4674 nfs_free_seqid(calldata
->arg
.seqid
);
4675 nfs4_put_lock_state(calldata
->lsp
);
4676 put_nfs_open_context(calldata
->ctx
);
4680 static void nfs4_locku_done(struct rpc_task
*task
, void *data
)
4682 struct nfs4_unlockdata
*calldata
= data
;
4684 if (!nfs4_sequence_done(task
, &calldata
->res
.seq_res
))
4686 switch (task
->tk_status
) {
4688 nfs4_stateid_copy(&calldata
->lsp
->ls_stateid
,
4689 &calldata
->res
.stateid
);
4690 renew_lease(calldata
->server
, calldata
->timestamp
);
4692 case -NFS4ERR_BAD_STATEID
:
4693 case -NFS4ERR_OLD_STATEID
:
4694 case -NFS4ERR_STALE_STATEID
:
4695 case -NFS4ERR_EXPIRED
:
4698 if (nfs4_async_handle_error(task
, calldata
->server
, NULL
) == -EAGAIN
)
4699 rpc_restart_call_prepare(task
);
4701 nfs_release_seqid(calldata
->arg
.seqid
);
4704 static void nfs4_locku_prepare(struct rpc_task
*task
, void *data
)
4706 struct nfs4_unlockdata
*calldata
= data
;
4708 if (nfs_wait_on_sequence(calldata
->arg
.seqid
, task
) != 0)
4710 if (test_bit(NFS_LOCK_INITIALIZED
, &calldata
->lsp
->ls_flags
) == 0) {
4711 /* Note: exit _without_ running nfs4_locku_done */
4714 calldata
->timestamp
= jiffies
;
4715 if (nfs4_setup_sequence(calldata
->server
,
4716 &calldata
->arg
.seq_args
,
4717 &calldata
->res
.seq_res
,
4719 nfs_release_seqid(calldata
->arg
.seqid
);
4722 task
->tk_action
= NULL
;
4724 nfs4_sequence_done(task
, &calldata
->res
.seq_res
);
4727 static const struct rpc_call_ops nfs4_locku_ops
= {
4728 .rpc_call_prepare
= nfs4_locku_prepare
,
4729 .rpc_call_done
= nfs4_locku_done
,
4730 .rpc_release
= nfs4_locku_release_calldata
,
4733 static struct rpc_task
*nfs4_do_unlck(struct file_lock
*fl
,
4734 struct nfs_open_context
*ctx
,
4735 struct nfs4_lock_state
*lsp
,
4736 struct nfs_seqid
*seqid
)
4738 struct nfs4_unlockdata
*data
;
4739 struct rpc_message msg
= {
4740 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCKU
],
4741 .rpc_cred
= ctx
->cred
,
4743 struct rpc_task_setup task_setup_data
= {
4744 .rpc_client
= NFS_CLIENT(lsp
->ls_state
->inode
),
4745 .rpc_message
= &msg
,
4746 .callback_ops
= &nfs4_locku_ops
,
4747 .workqueue
= nfsiod_workqueue
,
4748 .flags
= RPC_TASK_ASYNC
,
4751 /* Ensure this is an unlock - when canceling a lock, the
4752 * canceled lock is passed in, and it won't be an unlock.
4754 fl
->fl_type
= F_UNLCK
;
4756 data
= nfs4_alloc_unlockdata(fl
, ctx
, lsp
, seqid
);
4758 nfs_free_seqid(seqid
);
4759 return ERR_PTR(-ENOMEM
);
4762 nfs41_init_sequence(&data
->arg
.seq_args
, &data
->res
.seq_res
, 1);
4763 msg
.rpc_argp
= &data
->arg
;
4764 msg
.rpc_resp
= &data
->res
;
4765 task_setup_data
.callback_data
= data
;
4766 return rpc_run_task(&task_setup_data
);
4769 static int nfs4_proc_unlck(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
4771 struct inode
*inode
= state
->inode
;
4772 struct nfs4_state_owner
*sp
= state
->owner
;
4773 struct nfs_inode
*nfsi
= NFS_I(inode
);
4774 struct nfs_seqid
*seqid
;
4775 struct nfs4_lock_state
*lsp
;
4776 struct rpc_task
*task
;
4778 unsigned char fl_flags
= request
->fl_flags
;
4780 status
= nfs4_set_lock_state(state
, request
);
4781 /* Unlock _before_ we do the RPC call */
4782 request
->fl_flags
|= FL_EXISTS
;
4783 /* Exclude nfs_delegation_claim_locks() */
4784 mutex_lock(&sp
->so_delegreturn_mutex
);
4785 /* Exclude nfs4_reclaim_open_stateid() - note nesting! */
4786 down_read(&nfsi
->rwsem
);
4787 if (do_vfs_lock(request
->fl_file
, request
) == -ENOENT
) {
4788 up_read(&nfsi
->rwsem
);
4789 mutex_unlock(&sp
->so_delegreturn_mutex
);
4792 up_read(&nfsi
->rwsem
);
4793 mutex_unlock(&sp
->so_delegreturn_mutex
);
4796 /* Is this a delegated lock? */
4797 lsp
= request
->fl_u
.nfs4_fl
.owner
;
4798 if (test_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
) == 0)
4800 seqid
= nfs_alloc_seqid(&lsp
->ls_seqid
, GFP_KERNEL
);
4804 task
= nfs4_do_unlck(request
, nfs_file_open_context(request
->fl_file
), lsp
, seqid
);
4805 status
= PTR_ERR(task
);
4808 status
= nfs4_wait_for_completion_rpc_task(task
);
4811 request
->fl_flags
= fl_flags
;
4815 struct nfs4_lockdata
{
4816 struct nfs_lock_args arg
;
4817 struct nfs_lock_res res
;
4818 struct nfs4_lock_state
*lsp
;
4819 struct nfs_open_context
*ctx
;
4820 struct file_lock fl
;
4821 unsigned long timestamp
;
4824 struct nfs_server
*server
;
4827 static struct nfs4_lockdata
*nfs4_alloc_lockdata(struct file_lock
*fl
,
4828 struct nfs_open_context
*ctx
, struct nfs4_lock_state
*lsp
,
4831 struct nfs4_lockdata
*p
;
4832 struct inode
*inode
= lsp
->ls_state
->inode
;
4833 struct nfs_server
*server
= NFS_SERVER(inode
);
4835 p
= kzalloc(sizeof(*p
), gfp_mask
);
4839 p
->arg
.fh
= NFS_FH(inode
);
4841 p
->arg
.open_seqid
= nfs_alloc_seqid(&lsp
->ls_state
->owner
->so_seqid
, gfp_mask
);
4842 if (p
->arg
.open_seqid
== NULL
)
4844 p
->arg
.lock_seqid
= nfs_alloc_seqid(&lsp
->ls_seqid
, gfp_mask
);
4845 if (p
->arg
.lock_seqid
== NULL
)
4846 goto out_free_seqid
;
4847 p
->arg
.lock_stateid
= &lsp
->ls_stateid
;
4848 p
->arg
.lock_owner
.clientid
= server
->nfs_client
->cl_clientid
;
4849 p
->arg
.lock_owner
.id
= lsp
->ls_seqid
.owner_id
;
4850 p
->arg
.lock_owner
.s_dev
= server
->s_dev
;
4851 p
->res
.lock_seqid
= p
->arg
.lock_seqid
;
4854 atomic_inc(&lsp
->ls_count
);
4855 p
->ctx
= get_nfs_open_context(ctx
);
4856 memcpy(&p
->fl
, fl
, sizeof(p
->fl
));
4859 nfs_free_seqid(p
->arg
.open_seqid
);
4865 static void nfs4_lock_prepare(struct rpc_task
*task
, void *calldata
)
4867 struct nfs4_lockdata
*data
= calldata
;
4868 struct nfs4_state
*state
= data
->lsp
->ls_state
;
4870 dprintk("%s: begin!\n", __func__
);
4871 if (nfs_wait_on_sequence(data
->arg
.lock_seqid
, task
) != 0)
4873 /* Do we need to do an open_to_lock_owner? */
4874 if (!(data
->arg
.lock_seqid
->sequence
->flags
& NFS_SEQID_CONFIRMED
)) {
4875 if (nfs_wait_on_sequence(data
->arg
.open_seqid
, task
) != 0) {
4876 goto out_release_lock_seqid
;
4878 data
->arg
.open_stateid
= &state
->open_stateid
;
4879 data
->arg
.new_lock_owner
= 1;
4880 data
->res
.open_seqid
= data
->arg
.open_seqid
;
4882 data
->arg
.new_lock_owner
= 0;
4883 if (!nfs4_valid_open_stateid(state
)) {
4884 data
->rpc_status
= -EBADF
;
4885 task
->tk_action
= NULL
;
4886 goto out_release_open_seqid
;
4888 data
->timestamp
= jiffies
;
4889 if (nfs4_setup_sequence(data
->server
,
4890 &data
->arg
.seq_args
,
4894 out_release_open_seqid
:
4895 nfs_release_seqid(data
->arg
.open_seqid
);
4896 out_release_lock_seqid
:
4897 nfs_release_seqid(data
->arg
.lock_seqid
);
4899 nfs4_sequence_done(task
, &data
->res
.seq_res
);
4900 dprintk("%s: done!, ret = %d\n", __func__
, data
->rpc_status
);
4903 static void nfs4_lock_done(struct rpc_task
*task
, void *calldata
)
4905 struct nfs4_lockdata
*data
= calldata
;
4907 dprintk("%s: begin!\n", __func__
);
4909 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
4912 data
->rpc_status
= task
->tk_status
;
4913 if (data
->arg
.new_lock_owner
!= 0) {
4914 if (data
->rpc_status
== 0)
4915 nfs_confirm_seqid(&data
->lsp
->ls_seqid
, 0);
4919 if (data
->rpc_status
== 0) {
4920 nfs4_stateid_copy(&data
->lsp
->ls_stateid
, &data
->res
.stateid
);
4921 set_bit(NFS_LOCK_INITIALIZED
, &data
->lsp
->ls_flags
);
4922 renew_lease(NFS_SERVER(data
->ctx
->dentry
->d_inode
), data
->timestamp
);
4925 dprintk("%s: done, ret = %d!\n", __func__
, data
->rpc_status
);
4928 static void nfs4_lock_release(void *calldata
)
4930 struct nfs4_lockdata
*data
= calldata
;
4932 dprintk("%s: begin!\n", __func__
);
4933 nfs_free_seqid(data
->arg
.open_seqid
);
4934 if (data
->cancelled
!= 0) {
4935 struct rpc_task
*task
;
4936 task
= nfs4_do_unlck(&data
->fl
, data
->ctx
, data
->lsp
,
4937 data
->arg
.lock_seqid
);
4939 rpc_put_task_async(task
);
4940 dprintk("%s: cancelling lock!\n", __func__
);
4942 nfs_free_seqid(data
->arg
.lock_seqid
);
4943 nfs4_put_lock_state(data
->lsp
);
4944 put_nfs_open_context(data
->ctx
);
4946 dprintk("%s: done!\n", __func__
);
4949 static const struct rpc_call_ops nfs4_lock_ops
= {
4950 .rpc_call_prepare
= nfs4_lock_prepare
,
4951 .rpc_call_done
= nfs4_lock_done
,
4952 .rpc_release
= nfs4_lock_release
,
4955 static void nfs4_handle_setlk_error(struct nfs_server
*server
, struct nfs4_lock_state
*lsp
, int new_lock_owner
, int error
)
4958 case -NFS4ERR_ADMIN_REVOKED
:
4959 case -NFS4ERR_BAD_STATEID
:
4960 lsp
->ls_seqid
.flags
&= ~NFS_SEQID_CONFIRMED
;
4961 if (new_lock_owner
!= 0 ||
4962 test_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
) != 0)
4963 nfs4_schedule_stateid_recovery(server
, lsp
->ls_state
);
4965 case -NFS4ERR_STALE_STATEID
:
4966 lsp
->ls_seqid
.flags
&= ~NFS_SEQID_CONFIRMED
;
4967 case -NFS4ERR_EXPIRED
:
4968 nfs4_schedule_lease_recovery(server
->nfs_client
);
4972 static int _nfs4_do_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*fl
, int recovery_type
)
4974 struct nfs4_lockdata
*data
;
4975 struct rpc_task
*task
;
4976 struct rpc_message msg
= {
4977 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCK
],
4978 .rpc_cred
= state
->owner
->so_cred
,
4980 struct rpc_task_setup task_setup_data
= {
4981 .rpc_client
= NFS_CLIENT(state
->inode
),
4982 .rpc_message
= &msg
,
4983 .callback_ops
= &nfs4_lock_ops
,
4984 .workqueue
= nfsiod_workqueue
,
4985 .flags
= RPC_TASK_ASYNC
,
4989 dprintk("%s: begin!\n", __func__
);
4990 data
= nfs4_alloc_lockdata(fl
, nfs_file_open_context(fl
->fl_file
),
4991 fl
->fl_u
.nfs4_fl
.owner
,
4992 recovery_type
== NFS_LOCK_NEW
? GFP_KERNEL
: GFP_NOFS
);
4996 data
->arg
.block
= 1;
4997 nfs41_init_sequence(&data
->arg
.seq_args
, &data
->res
.seq_res
, 1);
4998 msg
.rpc_argp
= &data
->arg
;
4999 msg
.rpc_resp
= &data
->res
;
5000 task_setup_data
.callback_data
= data
;
5001 if (recovery_type
> NFS_LOCK_NEW
) {
5002 if (recovery_type
== NFS_LOCK_RECLAIM
)
5003 data
->arg
.reclaim
= NFS_LOCK_RECLAIM
;
5004 nfs4_set_sequence_privileged(&data
->arg
.seq_args
);
5006 task
= rpc_run_task(&task_setup_data
);
5008 return PTR_ERR(task
);
5009 ret
= nfs4_wait_for_completion_rpc_task(task
);
5011 ret
= data
->rpc_status
;
5013 nfs4_handle_setlk_error(data
->server
, data
->lsp
,
5014 data
->arg
.new_lock_owner
, ret
);
5016 data
->cancelled
= 1;
5018 dprintk("%s: done, ret = %d!\n", __func__
, ret
);
5022 static int nfs4_lock_reclaim(struct nfs4_state
*state
, struct file_lock
*request
)
5024 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
5025 struct nfs4_exception exception
= {
5026 .inode
= state
->inode
,
5031 /* Cache the lock if possible... */
5032 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) != 0)
5034 err
= _nfs4_do_setlk(state
, F_SETLK
, request
, NFS_LOCK_RECLAIM
);
5035 if (err
!= -NFS4ERR_DELAY
)
5037 nfs4_handle_exception(server
, err
, &exception
);
5038 } while (exception
.retry
);
5042 static int nfs4_lock_expired(struct nfs4_state
*state
, struct file_lock
*request
)
5044 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
5045 struct nfs4_exception exception
= {
5046 .inode
= state
->inode
,
5050 err
= nfs4_set_lock_state(state
, request
);
5054 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) != 0)
5056 err
= _nfs4_do_setlk(state
, F_SETLK
, request
, NFS_LOCK_EXPIRED
);
5060 case -NFS4ERR_GRACE
:
5061 case -NFS4ERR_DELAY
:
5062 nfs4_handle_exception(server
, err
, &exception
);
5065 } while (exception
.retry
);
5070 #if defined(CONFIG_NFS_V4_1)
5072 * nfs41_check_expired_locks - possibly free a lock stateid
5074 * @state: NFSv4 state for an inode
5076 * Returns NFS_OK if recovery for this stateid is now finished.
5077 * Otherwise a negative NFS4ERR value is returned.
5079 static int nfs41_check_expired_locks(struct nfs4_state
*state
)
5081 int status
, ret
= -NFS4ERR_BAD_STATEID
;
5082 struct nfs4_lock_state
*lsp
;
5083 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
5085 list_for_each_entry(lsp
, &state
->lock_states
, ls_locks
) {
5086 if (test_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
)) {
5087 status
= nfs41_test_stateid(server
, &lsp
->ls_stateid
);
5088 if (status
!= NFS_OK
) {
5089 /* Free the stateid unless the server
5090 * informs us the stateid is unrecognized. */
5091 if (status
!= -NFS4ERR_BAD_STATEID
)
5092 nfs41_free_stateid(server
,
5094 clear_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
);
5103 static int nfs41_lock_expired(struct nfs4_state
*state
, struct file_lock
*request
)
5105 int status
= NFS_OK
;
5107 if (test_bit(LK_STATE_IN_USE
, &state
->flags
))
5108 status
= nfs41_check_expired_locks(state
);
5109 if (status
!= NFS_OK
)
5110 status
= nfs4_lock_expired(state
, request
);
5115 static int _nfs4_proc_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
5117 struct nfs4_state_owner
*sp
= state
->owner
;
5118 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
5119 unsigned char fl_flags
= request
->fl_flags
;
5121 int status
= -ENOLCK
;
5123 if ((fl_flags
& FL_POSIX
) &&
5124 !test_bit(NFS_STATE_POSIX_LOCKS
, &state
->flags
))
5126 /* Is this a delegated open? */
5127 status
= nfs4_set_lock_state(state
, request
);
5130 request
->fl_flags
|= FL_ACCESS
;
5131 status
= do_vfs_lock(request
->fl_file
, request
);
5134 down_read(&nfsi
->rwsem
);
5135 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
)) {
5136 /* Yes: cache locks! */
5137 /* ...but avoid races with delegation recall... */
5138 request
->fl_flags
= fl_flags
& ~FL_SLEEP
;
5139 status
= do_vfs_lock(request
->fl_file
, request
);
5142 seq
= raw_seqcount_begin(&sp
->so_reclaim_seqcount
);
5143 up_read(&nfsi
->rwsem
);
5144 status
= _nfs4_do_setlk(state
, cmd
, request
, NFS_LOCK_NEW
);
5147 down_read(&nfsi
->rwsem
);
5148 if (read_seqcount_retry(&sp
->so_reclaim_seqcount
, seq
)) {
5149 status
= -NFS4ERR_DELAY
;
5152 /* Note: we always want to sleep here! */
5153 request
->fl_flags
= fl_flags
| FL_SLEEP
;
5154 if (do_vfs_lock(request
->fl_file
, request
) < 0)
5155 printk(KERN_WARNING
"NFS: %s: VFS is out of sync with lock "
5156 "manager!\n", __func__
);
5158 up_read(&nfsi
->rwsem
);
5160 request
->fl_flags
= fl_flags
;
5164 static int nfs4_proc_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
5166 struct nfs4_exception exception
= {
5168 .inode
= state
->inode
,
5173 err
= _nfs4_proc_setlk(state
, cmd
, request
);
5174 if (err
== -NFS4ERR_DENIED
)
5176 err
= nfs4_handle_exception(NFS_SERVER(state
->inode
),
5178 } while (exception
.retry
);
5183 nfs4_proc_lock(struct file
*filp
, int cmd
, struct file_lock
*request
)
5185 struct nfs_open_context
*ctx
;
5186 struct nfs4_state
*state
;
5187 unsigned long timeout
= NFS4_LOCK_MINTIMEOUT
;
5190 /* verify open state */
5191 ctx
= nfs_file_open_context(filp
);
5194 if (request
->fl_start
< 0 || request
->fl_end
< 0)
5197 if (IS_GETLK(cmd
)) {
5199 return nfs4_proc_getlk(state
, F_GETLK
, request
);
5203 if (!(IS_SETLK(cmd
) || IS_SETLKW(cmd
)))
5206 if (request
->fl_type
== F_UNLCK
) {
5208 return nfs4_proc_unlck(state
, cmd
, request
);
5215 * Don't rely on the VFS having checked the file open mode,
5216 * since it won't do this for flock() locks.
5218 switch (request
->fl_type
) {
5220 if (!(filp
->f_mode
& FMODE_READ
))
5224 if (!(filp
->f_mode
& FMODE_WRITE
))
5229 status
= nfs4_proc_setlk(state
, cmd
, request
);
5230 if ((status
!= -EAGAIN
) || IS_SETLK(cmd
))
5232 timeout
= nfs4_set_lock_task_retry(timeout
);
5233 status
= -ERESTARTSYS
;
5236 } while(status
< 0);
5240 int nfs4_lock_delegation_recall(struct file_lock
*fl
, struct nfs4_state
*state
, const nfs4_stateid
*stateid
)
5242 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
5245 err
= nfs4_set_lock_state(state
, fl
);
5248 err
= _nfs4_do_setlk(state
, F_SETLK
, fl
, NFS_LOCK_NEW
);
5249 return nfs4_handle_delegation_recall_error(server
, state
, stateid
, err
);
5252 struct nfs_release_lockowner_data
{
5253 struct nfs4_lock_state
*lsp
;
5254 struct nfs_server
*server
;
5255 struct nfs_release_lockowner_args args
;
5258 static void nfs4_release_lockowner_release(void *calldata
)
5260 struct nfs_release_lockowner_data
*data
= calldata
;
5261 nfs4_free_lock_state(data
->server
, data
->lsp
);
5265 static const struct rpc_call_ops nfs4_release_lockowner_ops
= {
5266 .rpc_release
= nfs4_release_lockowner_release
,
5269 static int nfs4_release_lockowner(struct nfs_server
*server
, struct nfs4_lock_state
*lsp
)
5271 struct nfs_release_lockowner_data
*data
;
5272 struct rpc_message msg
= {
5273 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RELEASE_LOCKOWNER
],
5276 if (server
->nfs_client
->cl_mvops
->minor_version
!= 0)
5278 data
= kmalloc(sizeof(*data
), GFP_NOFS
);
5282 data
->server
= server
;
5283 data
->args
.lock_owner
.clientid
= server
->nfs_client
->cl_clientid
;
5284 data
->args
.lock_owner
.id
= lsp
->ls_seqid
.owner_id
;
5285 data
->args
.lock_owner
.s_dev
= server
->s_dev
;
5286 msg
.rpc_argp
= &data
->args
;
5287 rpc_call_async(server
->client
, &msg
, 0, &nfs4_release_lockowner_ops
, data
);
5291 #define XATTR_NAME_NFSV4_ACL "system.nfs4_acl"
5293 static int nfs4_xattr_set_nfs4_acl(struct dentry
*dentry
, const char *key
,
5294 const void *buf
, size_t buflen
,
5295 int flags
, int type
)
5297 if (strcmp(key
, "") != 0)
5300 return nfs4_proc_set_acl(dentry
->d_inode
, buf
, buflen
);
5303 static int nfs4_xattr_get_nfs4_acl(struct dentry
*dentry
, const char *key
,
5304 void *buf
, size_t buflen
, int type
)
5306 if (strcmp(key
, "") != 0)
5309 return nfs4_proc_get_acl(dentry
->d_inode
, buf
, buflen
);
5312 static size_t nfs4_xattr_list_nfs4_acl(struct dentry
*dentry
, char *list
,
5313 size_t list_len
, const char *name
,
5314 size_t name_len
, int type
)
5316 size_t len
= sizeof(XATTR_NAME_NFSV4_ACL
);
5318 if (!nfs4_server_supports_acls(NFS_SERVER(dentry
->d_inode
)))
5321 if (list
&& len
<= list_len
)
5322 memcpy(list
, XATTR_NAME_NFSV4_ACL
, len
);
5327 * nfs_fhget will use either the mounted_on_fileid or the fileid
5329 static void nfs_fixup_referral_attributes(struct nfs_fattr
*fattr
)
5331 if (!(((fattr
->valid
& NFS_ATTR_FATTR_MOUNTED_ON_FILEID
) ||
5332 (fattr
->valid
& NFS_ATTR_FATTR_FILEID
)) &&
5333 (fattr
->valid
& NFS_ATTR_FATTR_FSID
) &&
5334 (fattr
->valid
& NFS_ATTR_FATTR_V4_LOCATIONS
)))
5337 fattr
->valid
|= NFS_ATTR_FATTR_TYPE
| NFS_ATTR_FATTR_MODE
|
5338 NFS_ATTR_FATTR_NLINK
| NFS_ATTR_FATTR_V4_REFERRAL
;
5339 fattr
->mode
= S_IFDIR
| S_IRUGO
| S_IXUGO
;
5343 static int _nfs4_proc_fs_locations(struct rpc_clnt
*client
, struct inode
*dir
,
5344 const struct qstr
*name
,
5345 struct nfs4_fs_locations
*fs_locations
,
5348 struct nfs_server
*server
= NFS_SERVER(dir
);
5350 [0] = FATTR4_WORD0_FSID
| FATTR4_WORD0_FS_LOCATIONS
,
5352 struct nfs4_fs_locations_arg args
= {
5353 .dir_fh
= NFS_FH(dir
),
5358 struct nfs4_fs_locations_res res
= {
5359 .fs_locations
= fs_locations
,
5361 struct rpc_message msg
= {
5362 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FS_LOCATIONS
],
5368 dprintk("%s: start\n", __func__
);
5370 /* Ask for the fileid of the absent filesystem if mounted_on_fileid
5371 * is not supported */
5372 if (NFS_SERVER(dir
)->attr_bitmask
[1] & FATTR4_WORD1_MOUNTED_ON_FILEID
)
5373 bitmask
[1] |= FATTR4_WORD1_MOUNTED_ON_FILEID
;
5375 bitmask
[0] |= FATTR4_WORD0_FILEID
;
5377 nfs_fattr_init(&fs_locations
->fattr
);
5378 fs_locations
->server
= server
;
5379 fs_locations
->nlocations
= 0;
5380 status
= nfs4_call_sync(client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
5381 dprintk("%s: returned status = %d\n", __func__
, status
);
5385 int nfs4_proc_fs_locations(struct rpc_clnt
*client
, struct inode
*dir
,
5386 const struct qstr
*name
,
5387 struct nfs4_fs_locations
*fs_locations
,
5390 struct nfs4_exception exception
= { };
5393 err
= nfs4_handle_exception(NFS_SERVER(dir
),
5394 _nfs4_proc_fs_locations(client
, dir
, name
, fs_locations
, page
),
5396 } while (exception
.retry
);
5400 static int _nfs4_proc_secinfo(struct inode
*dir
, const struct qstr
*name
, struct nfs4_secinfo_flavors
*flavors
)
5403 struct nfs4_secinfo_arg args
= {
5404 .dir_fh
= NFS_FH(dir
),
5407 struct nfs4_secinfo_res res
= {
5410 struct rpc_message msg
= {
5411 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SECINFO
],
5416 dprintk("NFS call secinfo %s\n", name
->name
);
5417 status
= nfs4_call_sync(NFS_SERVER(dir
)->client
, NFS_SERVER(dir
), &msg
, &args
.seq_args
, &res
.seq_res
, 0);
5418 dprintk("NFS reply secinfo: %d\n", status
);
5422 int nfs4_proc_secinfo(struct inode
*dir
, const struct qstr
*name
,
5423 struct nfs4_secinfo_flavors
*flavors
)
5425 struct nfs4_exception exception
= { };
5428 err
= nfs4_handle_exception(NFS_SERVER(dir
),
5429 _nfs4_proc_secinfo(dir
, name
, flavors
),
5431 } while (exception
.retry
);
5435 #ifdef CONFIG_NFS_V4_1
5437 * Check the exchange flags returned by the server for invalid flags, having
5438 * both PNFS and NON_PNFS flags set, and not having one of NON_PNFS, PNFS, or
5441 static int nfs4_check_cl_exchange_flags(u32 flags
)
5443 if (flags
& ~EXCHGID4_FLAG_MASK_R
)
5445 if ((flags
& EXCHGID4_FLAG_USE_PNFS_MDS
) &&
5446 (flags
& EXCHGID4_FLAG_USE_NON_PNFS
))
5448 if (!(flags
& (EXCHGID4_FLAG_MASK_PNFS
)))
5452 return -NFS4ERR_INVAL
;
5456 nfs41_same_server_scope(struct nfs41_server_scope
*a
,
5457 struct nfs41_server_scope
*b
)
5459 if (a
->server_scope_sz
== b
->server_scope_sz
&&
5460 memcmp(a
->server_scope
, b
->server_scope
, a
->server_scope_sz
) == 0)
5467 * nfs4_proc_bind_conn_to_session()
5469 * The 4.1 client currently uses the same TCP connection for the
5470 * fore and backchannel.
5472 int nfs4_proc_bind_conn_to_session(struct nfs_client
*clp
, struct rpc_cred
*cred
)
5475 struct nfs41_bind_conn_to_session_res res
;
5476 struct rpc_message msg
= {
5478 &nfs4_procedures
[NFSPROC4_CLNT_BIND_CONN_TO_SESSION
],
5484 dprintk("--> %s\n", __func__
);
5486 res
.session
= kzalloc(sizeof(struct nfs4_session
), GFP_NOFS
);
5487 if (unlikely(res
.session
== NULL
)) {
5492 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
5494 if (memcmp(res
.session
->sess_id
.data
,
5495 clp
->cl_session
->sess_id
.data
, NFS4_MAX_SESSIONID_LEN
)) {
5496 dprintk("NFS: %s: Session ID mismatch\n", __func__
);
5500 if (res
.dir
!= NFS4_CDFS4_BOTH
) {
5501 dprintk("NFS: %s: Unexpected direction from server\n",
5506 if (res
.use_conn_in_rdma_mode
) {
5507 dprintk("NFS: %s: Server returned RDMA mode = true\n",
5516 dprintk("<-- %s status= %d\n", __func__
, status
);
5521 * nfs4_proc_exchange_id()
5523 * Returns zero, a negative errno, or a negative NFS4ERR status code.
5525 * Since the clientid has expired, all compounds using sessions
5526 * associated with the stale clientid will be returning
5527 * NFS4ERR_BADSESSION in the sequence operation, and will therefore
5528 * be in some phase of session reset.
5530 int nfs4_proc_exchange_id(struct nfs_client
*clp
, struct rpc_cred
*cred
)
5532 nfs4_verifier verifier
;
5533 struct nfs41_exchange_id_args args
= {
5534 .verifier
= &verifier
,
5536 .flags
= EXCHGID4_FLAG_SUPP_MOVED_REFER
,
5538 struct nfs41_exchange_id_res res
= {
5542 struct rpc_message msg
= {
5543 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_EXCHANGE_ID
],
5549 nfs4_init_boot_verifier(clp
, &verifier
);
5550 args
.id_len
= nfs4_init_uniform_client_string(clp
, args
.id
,
5552 dprintk("NFS call exchange_id auth=%s, '%.*s'\n",
5553 clp
->cl_rpcclient
->cl_auth
->au_ops
->au_name
,
5554 args
.id_len
, args
.id
);
5556 res
.server_owner
= kzalloc(sizeof(struct nfs41_server_owner
),
5558 if (unlikely(res
.server_owner
== NULL
)) {
5563 res
.server_scope
= kzalloc(sizeof(struct nfs41_server_scope
),
5565 if (unlikely(res
.server_scope
== NULL
)) {
5567 goto out_server_owner
;
5570 res
.impl_id
= kzalloc(sizeof(struct nfs41_impl_id
), GFP_NOFS
);
5571 if (unlikely(res
.impl_id
== NULL
)) {
5573 goto out_server_scope
;
5576 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
5578 status
= nfs4_check_cl_exchange_flags(res
.flags
);
5581 clp
->cl_clientid
= res
.clientid
;
5582 clp
->cl_exchange_flags
= (res
.flags
& ~EXCHGID4_FLAG_CONFIRMED_R
);
5583 if (!(res
.flags
& EXCHGID4_FLAG_CONFIRMED_R
))
5584 clp
->cl_seqid
= res
.seqid
;
5586 kfree(clp
->cl_serverowner
);
5587 clp
->cl_serverowner
= res
.server_owner
;
5588 res
.server_owner
= NULL
;
5590 /* use the most recent implementation id */
5591 kfree(clp
->cl_implid
);
5592 clp
->cl_implid
= res
.impl_id
;
5594 if (clp
->cl_serverscope
!= NULL
&&
5595 !nfs41_same_server_scope(clp
->cl_serverscope
,
5596 res
.server_scope
)) {
5597 dprintk("%s: server_scope mismatch detected\n",
5599 set_bit(NFS4CLNT_SERVER_SCOPE_MISMATCH
, &clp
->cl_state
);
5600 kfree(clp
->cl_serverscope
);
5601 clp
->cl_serverscope
= NULL
;
5604 if (clp
->cl_serverscope
== NULL
) {
5605 clp
->cl_serverscope
= res
.server_scope
;
5612 kfree(res
.server_owner
);
5614 kfree(res
.server_scope
);
5616 if (clp
->cl_implid
!= NULL
)
5617 dprintk("NFS reply exchange_id: Server Implementation ID: "
5618 "domain: %s, name: %s, date: %llu,%u\n",
5619 clp
->cl_implid
->domain
, clp
->cl_implid
->name
,
5620 clp
->cl_implid
->date
.seconds
,
5621 clp
->cl_implid
->date
.nseconds
);
5622 dprintk("NFS reply exchange_id: %d\n", status
);
5626 static int _nfs4_proc_destroy_clientid(struct nfs_client
*clp
,
5627 struct rpc_cred
*cred
)
5629 struct rpc_message msg
= {
5630 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DESTROY_CLIENTID
],
5636 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
5638 dprintk("NFS: Got error %d from the server %s on "
5639 "DESTROY_CLIENTID.", status
, clp
->cl_hostname
);
5643 static int nfs4_proc_destroy_clientid(struct nfs_client
*clp
,
5644 struct rpc_cred
*cred
)
5649 for (loop
= NFS4_MAX_LOOP_ON_RECOVER
; loop
!= 0; loop
--) {
5650 ret
= _nfs4_proc_destroy_clientid(clp
, cred
);
5652 case -NFS4ERR_DELAY
:
5653 case -NFS4ERR_CLIENTID_BUSY
:
5663 int nfs4_destroy_clientid(struct nfs_client
*clp
)
5665 struct rpc_cred
*cred
;
5668 if (clp
->cl_mvops
->minor_version
< 1)
5670 if (clp
->cl_exchange_flags
== 0)
5672 if (clp
->cl_preserve_clid
)
5674 cred
= nfs4_get_exchange_id_cred(clp
);
5675 ret
= nfs4_proc_destroy_clientid(clp
, cred
);
5680 case -NFS4ERR_STALE_CLIENTID
:
5681 clp
->cl_exchange_flags
= 0;
5687 struct nfs4_get_lease_time_data
{
5688 struct nfs4_get_lease_time_args
*args
;
5689 struct nfs4_get_lease_time_res
*res
;
5690 struct nfs_client
*clp
;
5693 static void nfs4_get_lease_time_prepare(struct rpc_task
*task
,
5696 struct nfs4_get_lease_time_data
*data
=
5697 (struct nfs4_get_lease_time_data
*)calldata
;
5699 dprintk("--> %s\n", __func__
);
5700 /* just setup sequence, do not trigger session recovery
5701 since we're invoked within one */
5702 nfs41_setup_sequence(data
->clp
->cl_session
,
5703 &data
->args
->la_seq_args
,
5704 &data
->res
->lr_seq_res
,
5706 dprintk("<-- %s\n", __func__
);
5710 * Called from nfs4_state_manager thread for session setup, so don't recover
5711 * from sequence operation or clientid errors.
5713 static void nfs4_get_lease_time_done(struct rpc_task
*task
, void *calldata
)
5715 struct nfs4_get_lease_time_data
*data
=
5716 (struct nfs4_get_lease_time_data
*)calldata
;
5718 dprintk("--> %s\n", __func__
);
5719 if (!nfs41_sequence_done(task
, &data
->res
->lr_seq_res
))
5721 switch (task
->tk_status
) {
5722 case -NFS4ERR_DELAY
:
5723 case -NFS4ERR_GRACE
:
5724 dprintk("%s Retry: tk_status %d\n", __func__
, task
->tk_status
);
5725 rpc_delay(task
, NFS4_POLL_RETRY_MIN
);
5726 task
->tk_status
= 0;
5728 case -NFS4ERR_RETRY_UNCACHED_REP
:
5729 rpc_restart_call_prepare(task
);
5732 dprintk("<-- %s\n", __func__
);
5735 static const struct rpc_call_ops nfs4_get_lease_time_ops
= {
5736 .rpc_call_prepare
= nfs4_get_lease_time_prepare
,
5737 .rpc_call_done
= nfs4_get_lease_time_done
,
5740 int nfs4_proc_get_lease_time(struct nfs_client
*clp
, struct nfs_fsinfo
*fsinfo
)
5742 struct rpc_task
*task
;
5743 struct nfs4_get_lease_time_args args
;
5744 struct nfs4_get_lease_time_res res
= {
5745 .lr_fsinfo
= fsinfo
,
5747 struct nfs4_get_lease_time_data data
= {
5752 struct rpc_message msg
= {
5753 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GET_LEASE_TIME
],
5757 struct rpc_task_setup task_setup
= {
5758 .rpc_client
= clp
->cl_rpcclient
,
5759 .rpc_message
= &msg
,
5760 .callback_ops
= &nfs4_get_lease_time_ops
,
5761 .callback_data
= &data
,
5762 .flags
= RPC_TASK_TIMEOUT
,
5766 nfs41_init_sequence(&args
.la_seq_args
, &res
.lr_seq_res
, 0);
5767 nfs4_set_sequence_privileged(&args
.la_seq_args
);
5768 dprintk("--> %s\n", __func__
);
5769 task
= rpc_run_task(&task_setup
);
5772 status
= PTR_ERR(task
);
5774 status
= task
->tk_status
;
5777 dprintk("<-- %s return %d\n", __func__
, status
);
5783 * Initialize the values to be used by the client in CREATE_SESSION
5784 * If nfs4_init_session set the fore channel request and response sizes,
5787 * Set the back channel max_resp_sz_cached to zero to force the client to
5788 * always set csa_cachethis to FALSE because the current implementation
5789 * of the back channel DRC only supports caching the CB_SEQUENCE operation.
5791 static void nfs4_init_channel_attrs(struct nfs41_create_session_args
*args
)
5793 struct nfs4_session
*session
= args
->client
->cl_session
;
5794 unsigned int mxrqst_sz
= session
->fc_target_max_rqst_sz
,
5795 mxresp_sz
= session
->fc_target_max_resp_sz
;
5798 mxrqst_sz
= NFS_MAX_FILE_IO_SIZE
;
5800 mxresp_sz
= NFS_MAX_FILE_IO_SIZE
;
5801 /* Fore channel attributes */
5802 args
->fc_attrs
.max_rqst_sz
= mxrqst_sz
;
5803 args
->fc_attrs
.max_resp_sz
= mxresp_sz
;
5804 args
->fc_attrs
.max_ops
= NFS4_MAX_OPS
;
5805 args
->fc_attrs
.max_reqs
= max_session_slots
;
5807 dprintk("%s: Fore Channel : max_rqst_sz=%u max_resp_sz=%u "
5808 "max_ops=%u max_reqs=%u\n",
5810 args
->fc_attrs
.max_rqst_sz
, args
->fc_attrs
.max_resp_sz
,
5811 args
->fc_attrs
.max_ops
, args
->fc_attrs
.max_reqs
);
5813 /* Back channel attributes */
5814 args
->bc_attrs
.max_rqst_sz
= PAGE_SIZE
;
5815 args
->bc_attrs
.max_resp_sz
= PAGE_SIZE
;
5816 args
->bc_attrs
.max_resp_sz_cached
= 0;
5817 args
->bc_attrs
.max_ops
= NFS4_MAX_BACK_CHANNEL_OPS
;
5818 args
->bc_attrs
.max_reqs
= 1;
5820 dprintk("%s: Back Channel : max_rqst_sz=%u max_resp_sz=%u "
5821 "max_resp_sz_cached=%u max_ops=%u max_reqs=%u\n",
5823 args
->bc_attrs
.max_rqst_sz
, args
->bc_attrs
.max_resp_sz
,
5824 args
->bc_attrs
.max_resp_sz_cached
, args
->bc_attrs
.max_ops
,
5825 args
->bc_attrs
.max_reqs
);
5828 static int nfs4_verify_fore_channel_attrs(struct nfs41_create_session_args
*args
, struct nfs4_session
*session
)
5830 struct nfs4_channel_attrs
*sent
= &args
->fc_attrs
;
5831 struct nfs4_channel_attrs
*rcvd
= &session
->fc_attrs
;
5833 if (rcvd
->max_resp_sz
> sent
->max_resp_sz
)
5836 * Our requested max_ops is the minimum we need; we're not
5837 * prepared to break up compounds into smaller pieces than that.
5838 * So, no point even trying to continue if the server won't
5841 if (rcvd
->max_ops
< sent
->max_ops
)
5843 if (rcvd
->max_reqs
== 0)
5845 if (rcvd
->max_reqs
> NFS4_MAX_SLOT_TABLE
)
5846 rcvd
->max_reqs
= NFS4_MAX_SLOT_TABLE
;
5850 static int nfs4_verify_back_channel_attrs(struct nfs41_create_session_args
*args
, struct nfs4_session
*session
)
5852 struct nfs4_channel_attrs
*sent
= &args
->bc_attrs
;
5853 struct nfs4_channel_attrs
*rcvd
= &session
->bc_attrs
;
5855 if (rcvd
->max_rqst_sz
> sent
->max_rqst_sz
)
5857 if (rcvd
->max_resp_sz
< sent
->max_resp_sz
)
5859 if (rcvd
->max_resp_sz_cached
> sent
->max_resp_sz_cached
)
5861 /* These would render the backchannel useless: */
5862 if (rcvd
->max_ops
!= sent
->max_ops
)
5864 if (rcvd
->max_reqs
!= sent
->max_reqs
)
5869 static int nfs4_verify_channel_attrs(struct nfs41_create_session_args
*args
,
5870 struct nfs4_session
*session
)
5874 ret
= nfs4_verify_fore_channel_attrs(args
, session
);
5877 return nfs4_verify_back_channel_attrs(args
, session
);
5880 static int _nfs4_proc_create_session(struct nfs_client
*clp
,
5881 struct rpc_cred
*cred
)
5883 struct nfs4_session
*session
= clp
->cl_session
;
5884 struct nfs41_create_session_args args
= {
5886 .cb_program
= NFS4_CALLBACK
,
5888 struct nfs41_create_session_res res
= {
5891 struct rpc_message msg
= {
5892 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CREATE_SESSION
],
5899 nfs4_init_channel_attrs(&args
);
5900 args
.flags
= (SESSION4_PERSIST
| SESSION4_BACK_CHAN
);
5902 status
= rpc_call_sync(session
->clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
5905 /* Verify the session's negotiated channel_attrs values */
5906 status
= nfs4_verify_channel_attrs(&args
, session
);
5907 /* Increment the clientid slot sequence id */
5915 * Issues a CREATE_SESSION operation to the server.
5916 * It is the responsibility of the caller to verify the session is
5917 * expired before calling this routine.
5919 int nfs4_proc_create_session(struct nfs_client
*clp
, struct rpc_cred
*cred
)
5923 struct nfs4_session
*session
= clp
->cl_session
;
5925 dprintk("--> %s clp=%p session=%p\n", __func__
, clp
, session
);
5927 status
= _nfs4_proc_create_session(clp
, cred
);
5931 /* Init or reset the session slot tables */
5932 status
= nfs4_setup_session_slot_tables(session
);
5933 dprintk("slot table setup returned %d\n", status
);
5937 ptr
= (unsigned *)&session
->sess_id
.data
[0];
5938 dprintk("%s client>seqid %d sessionid %u:%u:%u:%u\n", __func__
,
5939 clp
->cl_seqid
, ptr
[0], ptr
[1], ptr
[2], ptr
[3]);
5941 dprintk("<-- %s\n", __func__
);
5946 * Issue the over-the-wire RPC DESTROY_SESSION.
5947 * The caller must serialize access to this routine.
5949 int nfs4_proc_destroy_session(struct nfs4_session
*session
,
5950 struct rpc_cred
*cred
)
5952 struct rpc_message msg
= {
5953 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DESTROY_SESSION
],
5954 .rpc_argp
= session
,
5959 dprintk("--> nfs4_proc_destroy_session\n");
5961 /* session is still being setup */
5962 if (session
->clp
->cl_cons_state
!= NFS_CS_READY
)
5965 status
= rpc_call_sync(session
->clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
5968 dprintk("NFS: Got error %d from the server on DESTROY_SESSION. "
5969 "Session has been destroyed regardless...\n", status
);
5971 dprintk("<-- nfs4_proc_destroy_session\n");
5976 * Renew the cl_session lease.
5978 struct nfs4_sequence_data
{
5979 struct nfs_client
*clp
;
5980 struct nfs4_sequence_args args
;
5981 struct nfs4_sequence_res res
;
5984 static void nfs41_sequence_release(void *data
)
5986 struct nfs4_sequence_data
*calldata
= data
;
5987 struct nfs_client
*clp
= calldata
->clp
;
5989 if (atomic_read(&clp
->cl_count
) > 1)
5990 nfs4_schedule_state_renewal(clp
);
5991 nfs_put_client(clp
);
5995 static int nfs41_sequence_handle_errors(struct rpc_task
*task
, struct nfs_client
*clp
)
5997 switch(task
->tk_status
) {
5998 case -NFS4ERR_DELAY
:
5999 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
6002 nfs4_schedule_lease_recovery(clp
);
6007 static void nfs41_sequence_call_done(struct rpc_task
*task
, void *data
)
6009 struct nfs4_sequence_data
*calldata
= data
;
6010 struct nfs_client
*clp
= calldata
->clp
;
6012 if (!nfs41_sequence_done(task
, task
->tk_msg
.rpc_resp
))
6015 if (task
->tk_status
< 0) {
6016 dprintk("%s ERROR %d\n", __func__
, task
->tk_status
);
6017 if (atomic_read(&clp
->cl_count
) == 1)
6020 if (nfs41_sequence_handle_errors(task
, clp
) == -EAGAIN
) {
6021 rpc_restart_call_prepare(task
);
6025 dprintk("%s rpc_cred %p\n", __func__
, task
->tk_msg
.rpc_cred
);
6027 dprintk("<-- %s\n", __func__
);
6030 static void nfs41_sequence_prepare(struct rpc_task
*task
, void *data
)
6032 struct nfs4_sequence_data
*calldata
= data
;
6033 struct nfs_client
*clp
= calldata
->clp
;
6034 struct nfs4_sequence_args
*args
;
6035 struct nfs4_sequence_res
*res
;
6037 args
= task
->tk_msg
.rpc_argp
;
6038 res
= task
->tk_msg
.rpc_resp
;
6040 nfs41_setup_sequence(clp
->cl_session
, args
, res
, task
);
6043 static const struct rpc_call_ops nfs41_sequence_ops
= {
6044 .rpc_call_done
= nfs41_sequence_call_done
,
6045 .rpc_call_prepare
= nfs41_sequence_prepare
,
6046 .rpc_release
= nfs41_sequence_release
,
6049 static struct rpc_task
*_nfs41_proc_sequence(struct nfs_client
*clp
,
6050 struct rpc_cred
*cred
,
6053 struct nfs4_sequence_data
*calldata
;
6054 struct rpc_message msg
= {
6055 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SEQUENCE
],
6058 struct rpc_task_setup task_setup_data
= {
6059 .rpc_client
= clp
->cl_rpcclient
,
6060 .rpc_message
= &msg
,
6061 .callback_ops
= &nfs41_sequence_ops
,
6062 .flags
= RPC_TASK_ASYNC
| RPC_TASK_TIMEOUT
,
6065 if (!atomic_inc_not_zero(&clp
->cl_count
))
6066 return ERR_PTR(-EIO
);
6067 calldata
= kzalloc(sizeof(*calldata
), GFP_NOFS
);
6068 if (calldata
== NULL
) {
6069 nfs_put_client(clp
);
6070 return ERR_PTR(-ENOMEM
);
6072 nfs41_init_sequence(&calldata
->args
, &calldata
->res
, 0);
6074 nfs4_set_sequence_privileged(&calldata
->args
);
6075 msg
.rpc_argp
= &calldata
->args
;
6076 msg
.rpc_resp
= &calldata
->res
;
6077 calldata
->clp
= clp
;
6078 task_setup_data
.callback_data
= calldata
;
6080 return rpc_run_task(&task_setup_data
);
6083 static int nfs41_proc_async_sequence(struct nfs_client
*clp
, struct rpc_cred
*cred
, unsigned renew_flags
)
6085 struct rpc_task
*task
;
6088 if ((renew_flags
& NFS4_RENEW_TIMEOUT
) == 0)
6090 task
= _nfs41_proc_sequence(clp
, cred
, false);
6092 ret
= PTR_ERR(task
);
6094 rpc_put_task_async(task
);
6095 dprintk("<-- %s status=%d\n", __func__
, ret
);
6099 static int nfs4_proc_sequence(struct nfs_client
*clp
, struct rpc_cred
*cred
)
6101 struct rpc_task
*task
;
6104 task
= _nfs41_proc_sequence(clp
, cred
, true);
6106 ret
= PTR_ERR(task
);
6109 ret
= rpc_wait_for_completion_task(task
);
6111 struct nfs4_sequence_res
*res
= task
->tk_msg
.rpc_resp
;
6113 if (task
->tk_status
== 0)
6114 nfs41_handle_sequence_flag_errors(clp
, res
->sr_status_flags
);
6115 ret
= task
->tk_status
;
6119 dprintk("<-- %s status=%d\n", __func__
, ret
);
6123 struct nfs4_reclaim_complete_data
{
6124 struct nfs_client
*clp
;
6125 struct nfs41_reclaim_complete_args arg
;
6126 struct nfs41_reclaim_complete_res res
;
6129 static void nfs4_reclaim_complete_prepare(struct rpc_task
*task
, void *data
)
6131 struct nfs4_reclaim_complete_data
*calldata
= data
;
6133 nfs41_setup_sequence(calldata
->clp
->cl_session
,
6134 &calldata
->arg
.seq_args
,
6135 &calldata
->res
.seq_res
,
6139 static int nfs41_reclaim_complete_handle_errors(struct rpc_task
*task
, struct nfs_client
*clp
)
6141 switch(task
->tk_status
) {
6143 case -NFS4ERR_COMPLETE_ALREADY
:
6144 case -NFS4ERR_WRONG_CRED
: /* What to do here? */
6146 case -NFS4ERR_DELAY
:
6147 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
6149 case -NFS4ERR_RETRY_UNCACHED_REP
:
6152 nfs4_schedule_lease_recovery(clp
);
6157 static void nfs4_reclaim_complete_done(struct rpc_task
*task
, void *data
)
6159 struct nfs4_reclaim_complete_data
*calldata
= data
;
6160 struct nfs_client
*clp
= calldata
->clp
;
6161 struct nfs4_sequence_res
*res
= &calldata
->res
.seq_res
;
6163 dprintk("--> %s\n", __func__
);
6164 if (!nfs41_sequence_done(task
, res
))
6167 if (nfs41_reclaim_complete_handle_errors(task
, clp
) == -EAGAIN
) {
6168 rpc_restart_call_prepare(task
);
6171 dprintk("<-- %s\n", __func__
);
6174 static void nfs4_free_reclaim_complete_data(void *data
)
6176 struct nfs4_reclaim_complete_data
*calldata
= data
;
6181 static const struct rpc_call_ops nfs4_reclaim_complete_call_ops
= {
6182 .rpc_call_prepare
= nfs4_reclaim_complete_prepare
,
6183 .rpc_call_done
= nfs4_reclaim_complete_done
,
6184 .rpc_release
= nfs4_free_reclaim_complete_data
,
6188 * Issue a global reclaim complete.
6190 static int nfs41_proc_reclaim_complete(struct nfs_client
*clp
)
6192 struct nfs4_reclaim_complete_data
*calldata
;
6193 struct rpc_task
*task
;
6194 struct rpc_message msg
= {
6195 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RECLAIM_COMPLETE
],
6197 struct rpc_task_setup task_setup_data
= {
6198 .rpc_client
= clp
->cl_rpcclient
,
6199 .rpc_message
= &msg
,
6200 .callback_ops
= &nfs4_reclaim_complete_call_ops
,
6201 .flags
= RPC_TASK_ASYNC
,
6203 int status
= -ENOMEM
;
6205 dprintk("--> %s\n", __func__
);
6206 calldata
= kzalloc(sizeof(*calldata
), GFP_NOFS
);
6207 if (calldata
== NULL
)
6209 calldata
->clp
= clp
;
6210 calldata
->arg
.one_fs
= 0;
6212 nfs41_init_sequence(&calldata
->arg
.seq_args
, &calldata
->res
.seq_res
, 0);
6213 nfs4_set_sequence_privileged(&calldata
->arg
.seq_args
);
6214 msg
.rpc_argp
= &calldata
->arg
;
6215 msg
.rpc_resp
= &calldata
->res
;
6216 task_setup_data
.callback_data
= calldata
;
6217 task
= rpc_run_task(&task_setup_data
);
6219 status
= PTR_ERR(task
);
6222 status
= nfs4_wait_for_completion_rpc_task(task
);
6224 status
= task
->tk_status
;
6228 dprintk("<-- %s status=%d\n", __func__
, status
);
6233 nfs4_layoutget_prepare(struct rpc_task
*task
, void *calldata
)
6235 struct nfs4_layoutget
*lgp
= calldata
;
6236 struct nfs_server
*server
= NFS_SERVER(lgp
->args
.inode
);
6237 struct nfs4_session
*session
= nfs4_get_session(server
);
6239 dprintk("--> %s\n", __func__
);
6240 /* Note the is a race here, where a CB_LAYOUTRECALL can come in
6241 * right now covering the LAYOUTGET we are about to send.
6242 * However, that is not so catastrophic, and there seems
6243 * to be no way to prevent it completely.
6245 if (nfs41_setup_sequence(session
, &lgp
->args
.seq_args
,
6246 &lgp
->res
.seq_res
, task
))
6248 if (pnfs_choose_layoutget_stateid(&lgp
->args
.stateid
,
6249 NFS_I(lgp
->args
.inode
)->layout
,
6250 lgp
->args
.ctx
->state
)) {
6251 rpc_exit(task
, NFS4_OK
);
6255 static void nfs4_layoutget_done(struct rpc_task
*task
, void *calldata
)
6257 struct nfs4_layoutget
*lgp
= calldata
;
6258 struct inode
*inode
= lgp
->args
.inode
;
6259 struct nfs_server
*server
= NFS_SERVER(inode
);
6260 struct pnfs_layout_hdr
*lo
;
6261 struct nfs4_state
*state
= NULL
;
6262 unsigned long timeo
, giveup
;
6264 dprintk("--> %s\n", __func__
);
6266 if (!nfs41_sequence_done(task
, &lgp
->res
.seq_res
))
6269 switch (task
->tk_status
) {
6272 case -NFS4ERR_LAYOUTTRYLATER
:
6273 case -NFS4ERR_RECALLCONFLICT
:
6274 timeo
= rpc_get_timeout(task
->tk_client
);
6275 giveup
= lgp
->args
.timestamp
+ timeo
;
6276 if (time_after(giveup
, jiffies
))
6277 task
->tk_status
= -NFS4ERR_DELAY
;
6279 case -NFS4ERR_EXPIRED
:
6280 case -NFS4ERR_BAD_STATEID
:
6281 spin_lock(&inode
->i_lock
);
6282 lo
= NFS_I(inode
)->layout
;
6283 if (!lo
|| list_empty(&lo
->plh_segs
)) {
6284 spin_unlock(&inode
->i_lock
);
6285 /* If the open stateid was bad, then recover it. */
6286 state
= lgp
->args
.ctx
->state
;
6290 pnfs_mark_matching_lsegs_invalid(lo
, &head
, NULL
);
6291 spin_unlock(&inode
->i_lock
);
6292 /* Mark the bad layout state as invalid, then
6293 * retry using the open stateid. */
6294 pnfs_free_lseg_list(&head
);
6297 if (nfs4_async_handle_error(task
, server
, state
) == -EAGAIN
)
6298 rpc_restart_call_prepare(task
);
6300 dprintk("<-- %s\n", __func__
);
6303 static size_t max_response_pages(struct nfs_server
*server
)
6305 u32 max_resp_sz
= server
->nfs_client
->cl_session
->fc_attrs
.max_resp_sz
;
6306 return nfs_page_array_len(0, max_resp_sz
);
6309 static void nfs4_free_pages(struct page
**pages
, size_t size
)
6316 for (i
= 0; i
< size
; i
++) {
6319 __free_page(pages
[i
]);
6324 static struct page
**nfs4_alloc_pages(size_t size
, gfp_t gfp_flags
)
6326 struct page
**pages
;
6329 pages
= kcalloc(size
, sizeof(struct page
*), gfp_flags
);
6331 dprintk("%s: can't alloc array of %zu pages\n", __func__
, size
);
6335 for (i
= 0; i
< size
; i
++) {
6336 pages
[i
] = alloc_page(gfp_flags
);
6338 dprintk("%s: failed to allocate page\n", __func__
);
6339 nfs4_free_pages(pages
, size
);
6347 static void nfs4_layoutget_release(void *calldata
)
6349 struct nfs4_layoutget
*lgp
= calldata
;
6350 struct inode
*inode
= lgp
->args
.inode
;
6351 struct nfs_server
*server
= NFS_SERVER(inode
);
6352 size_t max_pages
= max_response_pages(server
);
6354 dprintk("--> %s\n", __func__
);
6355 nfs4_free_pages(lgp
->args
.layout
.pages
, max_pages
);
6356 pnfs_put_layout_hdr(NFS_I(inode
)->layout
);
6357 put_nfs_open_context(lgp
->args
.ctx
);
6359 dprintk("<-- %s\n", __func__
);
6362 static const struct rpc_call_ops nfs4_layoutget_call_ops
= {
6363 .rpc_call_prepare
= nfs4_layoutget_prepare
,
6364 .rpc_call_done
= nfs4_layoutget_done
,
6365 .rpc_release
= nfs4_layoutget_release
,
6368 struct pnfs_layout_segment
*
6369 nfs4_proc_layoutget(struct nfs4_layoutget
*lgp
, gfp_t gfp_flags
)
6371 struct inode
*inode
= lgp
->args
.inode
;
6372 struct nfs_server
*server
= NFS_SERVER(inode
);
6373 size_t max_pages
= max_response_pages(server
);
6374 struct rpc_task
*task
;
6375 struct rpc_message msg
= {
6376 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LAYOUTGET
],
6377 .rpc_argp
= &lgp
->args
,
6378 .rpc_resp
= &lgp
->res
,
6380 struct rpc_task_setup task_setup_data
= {
6381 .rpc_client
= server
->client
,
6382 .rpc_message
= &msg
,
6383 .callback_ops
= &nfs4_layoutget_call_ops
,
6384 .callback_data
= lgp
,
6385 .flags
= RPC_TASK_ASYNC
,
6387 struct pnfs_layout_segment
*lseg
= NULL
;
6390 dprintk("--> %s\n", __func__
);
6392 lgp
->args
.layout
.pages
= nfs4_alloc_pages(max_pages
, gfp_flags
);
6393 if (!lgp
->args
.layout
.pages
) {
6394 nfs4_layoutget_release(lgp
);
6395 return ERR_PTR(-ENOMEM
);
6397 lgp
->args
.layout
.pglen
= max_pages
* PAGE_SIZE
;
6398 lgp
->args
.timestamp
= jiffies
;
6400 lgp
->res
.layoutp
= &lgp
->args
.layout
;
6401 lgp
->res
.seq_res
.sr_slot
= NULL
;
6402 nfs41_init_sequence(&lgp
->args
.seq_args
, &lgp
->res
.seq_res
, 0);
6404 /* nfs4_layoutget_release calls pnfs_put_layout_hdr */
6405 pnfs_get_layout_hdr(NFS_I(inode
)->layout
);
6407 task
= rpc_run_task(&task_setup_data
);
6409 return ERR_CAST(task
);
6410 status
= nfs4_wait_for_completion_rpc_task(task
);
6412 status
= task
->tk_status
;
6413 /* if layoutp->len is 0, nfs4_layoutget_prepare called rpc_exit */
6414 if (status
== 0 && lgp
->res
.layoutp
->len
)
6415 lseg
= pnfs_layout_process(lgp
);
6417 dprintk("<-- %s status=%d\n", __func__
, status
);
6419 return ERR_PTR(status
);
6424 nfs4_layoutreturn_prepare(struct rpc_task
*task
, void *calldata
)
6426 struct nfs4_layoutreturn
*lrp
= calldata
;
6428 dprintk("--> %s\n", __func__
);
6429 nfs41_setup_sequence(lrp
->clp
->cl_session
,
6430 &lrp
->args
.seq_args
,
6435 static void nfs4_layoutreturn_done(struct rpc_task
*task
, void *calldata
)
6437 struct nfs4_layoutreturn
*lrp
= calldata
;
6438 struct nfs_server
*server
;
6440 dprintk("--> %s\n", __func__
);
6442 if (!nfs41_sequence_done(task
, &lrp
->res
.seq_res
))
6445 server
= NFS_SERVER(lrp
->args
.inode
);
6446 if (nfs4_async_handle_error(task
, server
, NULL
) == -EAGAIN
) {
6447 rpc_restart_call_prepare(task
);
6450 dprintk("<-- %s\n", __func__
);
6453 static void nfs4_layoutreturn_release(void *calldata
)
6455 struct nfs4_layoutreturn
*lrp
= calldata
;
6456 struct pnfs_layout_hdr
*lo
= lrp
->args
.layout
;
6458 dprintk("--> %s\n", __func__
);
6459 spin_lock(&lo
->plh_inode
->i_lock
);
6460 if (lrp
->res
.lrs_present
)
6461 pnfs_set_layout_stateid(lo
, &lrp
->res
.stateid
, true);
6462 lo
->plh_block_lgets
--;
6463 spin_unlock(&lo
->plh_inode
->i_lock
);
6464 pnfs_put_layout_hdr(lrp
->args
.layout
);
6466 dprintk("<-- %s\n", __func__
);
6469 static const struct rpc_call_ops nfs4_layoutreturn_call_ops
= {
6470 .rpc_call_prepare
= nfs4_layoutreturn_prepare
,
6471 .rpc_call_done
= nfs4_layoutreturn_done
,
6472 .rpc_release
= nfs4_layoutreturn_release
,
6475 int nfs4_proc_layoutreturn(struct nfs4_layoutreturn
*lrp
)
6477 struct rpc_task
*task
;
6478 struct rpc_message msg
= {
6479 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LAYOUTRETURN
],
6480 .rpc_argp
= &lrp
->args
,
6481 .rpc_resp
= &lrp
->res
,
6483 struct rpc_task_setup task_setup_data
= {
6484 .rpc_client
= lrp
->clp
->cl_rpcclient
,
6485 .rpc_message
= &msg
,
6486 .callback_ops
= &nfs4_layoutreturn_call_ops
,
6487 .callback_data
= lrp
,
6491 dprintk("--> %s\n", __func__
);
6492 nfs41_init_sequence(&lrp
->args
.seq_args
, &lrp
->res
.seq_res
, 1);
6493 task
= rpc_run_task(&task_setup_data
);
6495 return PTR_ERR(task
);
6496 status
= task
->tk_status
;
6497 dprintk("<-- %s status=%d\n", __func__
, status
);
6503 * Retrieve the list of Data Server devices from the MDS.
6505 static int _nfs4_getdevicelist(struct nfs_server
*server
,
6506 const struct nfs_fh
*fh
,
6507 struct pnfs_devicelist
*devlist
)
6509 struct nfs4_getdevicelist_args args
= {
6511 .layoutclass
= server
->pnfs_curr_ld
->id
,
6513 struct nfs4_getdevicelist_res res
= {
6516 struct rpc_message msg
= {
6517 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETDEVICELIST
],
6523 dprintk("--> %s\n", __func__
);
6524 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
,
6526 dprintk("<-- %s status=%d\n", __func__
, status
);
6530 int nfs4_proc_getdevicelist(struct nfs_server
*server
,
6531 const struct nfs_fh
*fh
,
6532 struct pnfs_devicelist
*devlist
)
6534 struct nfs4_exception exception
= { };
6538 err
= nfs4_handle_exception(server
,
6539 _nfs4_getdevicelist(server
, fh
, devlist
),
6541 } while (exception
.retry
);
6543 dprintk("%s: err=%d, num_devs=%u\n", __func__
,
6544 err
, devlist
->num_devs
);
6548 EXPORT_SYMBOL_GPL(nfs4_proc_getdevicelist
);
6551 _nfs4_proc_getdeviceinfo(struct nfs_server
*server
, struct pnfs_device
*pdev
)
6553 struct nfs4_getdeviceinfo_args args
= {
6556 struct nfs4_getdeviceinfo_res res
= {
6559 struct rpc_message msg
= {
6560 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETDEVICEINFO
],
6566 dprintk("--> %s\n", __func__
);
6567 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
6568 dprintk("<-- %s status=%d\n", __func__
, status
);
6573 int nfs4_proc_getdeviceinfo(struct nfs_server
*server
, struct pnfs_device
*pdev
)
6575 struct nfs4_exception exception
= { };
6579 err
= nfs4_handle_exception(server
,
6580 _nfs4_proc_getdeviceinfo(server
, pdev
),
6582 } while (exception
.retry
);
6585 EXPORT_SYMBOL_GPL(nfs4_proc_getdeviceinfo
);
6587 static void nfs4_layoutcommit_prepare(struct rpc_task
*task
, void *calldata
)
6589 struct nfs4_layoutcommit_data
*data
= calldata
;
6590 struct nfs_server
*server
= NFS_SERVER(data
->args
.inode
);
6591 struct nfs4_session
*session
= nfs4_get_session(server
);
6593 nfs41_setup_sequence(session
,
6594 &data
->args
.seq_args
,
6600 nfs4_layoutcommit_done(struct rpc_task
*task
, void *calldata
)
6602 struct nfs4_layoutcommit_data
*data
= calldata
;
6603 struct nfs_server
*server
= NFS_SERVER(data
->args
.inode
);
6605 if (!nfs41_sequence_done(task
, &data
->res
.seq_res
))
6608 switch (task
->tk_status
) { /* Just ignore these failures */
6609 case -NFS4ERR_DELEG_REVOKED
: /* layout was recalled */
6610 case -NFS4ERR_BADIOMODE
: /* no IOMODE_RW layout for range */
6611 case -NFS4ERR_BADLAYOUT
: /* no layout */
6612 case -NFS4ERR_GRACE
: /* loca_recalim always false */
6613 task
->tk_status
= 0;
6616 nfs_post_op_update_inode_force_wcc(data
->args
.inode
,
6620 if (nfs4_async_handle_error(task
, server
, NULL
) == -EAGAIN
) {
6621 rpc_restart_call_prepare(task
);
6627 static void nfs4_layoutcommit_release(void *calldata
)
6629 struct nfs4_layoutcommit_data
*data
= calldata
;
6631 pnfs_cleanup_layoutcommit(data
);
6632 put_rpccred(data
->cred
);
6636 static const struct rpc_call_ops nfs4_layoutcommit_ops
= {
6637 .rpc_call_prepare
= nfs4_layoutcommit_prepare
,
6638 .rpc_call_done
= nfs4_layoutcommit_done
,
6639 .rpc_release
= nfs4_layoutcommit_release
,
6643 nfs4_proc_layoutcommit(struct nfs4_layoutcommit_data
*data
, bool sync
)
6645 struct rpc_message msg
= {
6646 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LAYOUTCOMMIT
],
6647 .rpc_argp
= &data
->args
,
6648 .rpc_resp
= &data
->res
,
6649 .rpc_cred
= data
->cred
,
6651 struct rpc_task_setup task_setup_data
= {
6652 .task
= &data
->task
,
6653 .rpc_client
= NFS_CLIENT(data
->args
.inode
),
6654 .rpc_message
= &msg
,
6655 .callback_ops
= &nfs4_layoutcommit_ops
,
6656 .callback_data
= data
,
6657 .flags
= RPC_TASK_ASYNC
,
6659 struct rpc_task
*task
;
6662 dprintk("NFS: %4d initiating layoutcommit call. sync %d "
6663 "lbw: %llu inode %lu\n",
6664 data
->task
.tk_pid
, sync
,
6665 data
->args
.lastbytewritten
,
6666 data
->args
.inode
->i_ino
);
6668 nfs41_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
6669 task
= rpc_run_task(&task_setup_data
);
6671 return PTR_ERR(task
);
6674 status
= nfs4_wait_for_completion_rpc_task(task
);
6677 status
= task
->tk_status
;
6679 dprintk("%s: status %d\n", __func__
, status
);
6685 _nfs41_proc_secinfo_no_name(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
6686 struct nfs_fsinfo
*info
, struct nfs4_secinfo_flavors
*flavors
)
6688 struct nfs41_secinfo_no_name_args args
= {
6689 .style
= SECINFO_STYLE_CURRENT_FH
,
6691 struct nfs4_secinfo_res res
= {
6694 struct rpc_message msg
= {
6695 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SECINFO_NO_NAME
],
6699 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
6703 nfs41_proc_secinfo_no_name(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
6704 struct nfs_fsinfo
*info
, struct nfs4_secinfo_flavors
*flavors
)
6706 struct nfs4_exception exception
= { };
6709 err
= _nfs41_proc_secinfo_no_name(server
, fhandle
, info
, flavors
);
6712 case -NFS4ERR_WRONGSEC
:
6713 case -NFS4ERR_NOTSUPP
:
6716 err
= nfs4_handle_exception(server
, err
, &exception
);
6718 } while (exception
.retry
);
6724 nfs41_find_root_sec(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
6725 struct nfs_fsinfo
*info
)
6729 rpc_authflavor_t flavor
;
6730 struct nfs4_secinfo_flavors
*flavors
;
6732 page
= alloc_page(GFP_KERNEL
);
6738 flavors
= page_address(page
);
6739 err
= nfs41_proc_secinfo_no_name(server
, fhandle
, info
, flavors
);
6742 * Fall back on "guess and check" method if
6743 * the server doesn't support SECINFO_NO_NAME
6745 if (err
== -NFS4ERR_WRONGSEC
|| err
== -NFS4ERR_NOTSUPP
) {
6746 err
= nfs4_find_root_sec(server
, fhandle
, info
);
6752 flavor
= nfs_find_best_sec(flavors
);
6754 err
= nfs4_lookup_root_sec(server
, fhandle
, info
, flavor
);
6764 static int _nfs41_test_stateid(struct nfs_server
*server
, nfs4_stateid
*stateid
)
6767 struct nfs41_test_stateid_args args
= {
6770 struct nfs41_test_stateid_res res
;
6771 struct rpc_message msg
= {
6772 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_TEST_STATEID
],
6777 dprintk("NFS call test_stateid %p\n", stateid
);
6778 nfs41_init_sequence(&args
.seq_args
, &res
.seq_res
, 0);
6779 nfs4_set_sequence_privileged(&args
.seq_args
);
6780 status
= nfs4_call_sync_sequence(server
->client
, server
, &msg
,
6781 &args
.seq_args
, &res
.seq_res
);
6782 if (status
!= NFS_OK
) {
6783 dprintk("NFS reply test_stateid: failed, %d\n", status
);
6786 dprintk("NFS reply test_stateid: succeeded, %d\n", -res
.status
);
6791 * nfs41_test_stateid - perform a TEST_STATEID operation
6793 * @server: server / transport on which to perform the operation
6794 * @stateid: state ID to test
6796 * Returns NFS_OK if the server recognizes that "stateid" is valid.
6797 * Otherwise a negative NFS4ERR value is returned if the operation
6798 * failed or the state ID is not currently valid.
6800 static int nfs41_test_stateid(struct nfs_server
*server
, nfs4_stateid
*stateid
)
6802 struct nfs4_exception exception
= { };
6805 err
= _nfs41_test_stateid(server
, stateid
);
6806 if (err
!= -NFS4ERR_DELAY
)
6808 nfs4_handle_exception(server
, err
, &exception
);
6809 } while (exception
.retry
);
6813 struct nfs_free_stateid_data
{
6814 struct nfs_server
*server
;
6815 struct nfs41_free_stateid_args args
;
6816 struct nfs41_free_stateid_res res
;
6819 static void nfs41_free_stateid_prepare(struct rpc_task
*task
, void *calldata
)
6821 struct nfs_free_stateid_data
*data
= calldata
;
6822 nfs41_setup_sequence(nfs4_get_session(data
->server
),
6823 &data
->args
.seq_args
,
6828 static void nfs41_free_stateid_done(struct rpc_task
*task
, void *calldata
)
6830 struct nfs_free_stateid_data
*data
= calldata
;
6832 nfs41_sequence_done(task
, &data
->res
.seq_res
);
6834 switch (task
->tk_status
) {
6835 case -NFS4ERR_DELAY
:
6836 if (nfs4_async_handle_error(task
, data
->server
, NULL
) == -EAGAIN
)
6837 rpc_restart_call_prepare(task
);
6841 static void nfs41_free_stateid_release(void *calldata
)
6846 const struct rpc_call_ops nfs41_free_stateid_ops
= {
6847 .rpc_call_prepare
= nfs41_free_stateid_prepare
,
6848 .rpc_call_done
= nfs41_free_stateid_done
,
6849 .rpc_release
= nfs41_free_stateid_release
,
6852 static struct rpc_task
*_nfs41_free_stateid(struct nfs_server
*server
,
6853 nfs4_stateid
*stateid
,
6856 struct rpc_message msg
= {
6857 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FREE_STATEID
],
6859 struct rpc_task_setup task_setup
= {
6860 .rpc_client
= server
->client
,
6861 .rpc_message
= &msg
,
6862 .callback_ops
= &nfs41_free_stateid_ops
,
6863 .flags
= RPC_TASK_ASYNC
,
6865 struct nfs_free_stateid_data
*data
;
6867 dprintk("NFS call free_stateid %p\n", stateid
);
6868 data
= kmalloc(sizeof(*data
), GFP_NOFS
);
6870 return ERR_PTR(-ENOMEM
);
6871 data
->server
= server
;
6872 nfs4_stateid_copy(&data
->args
.stateid
, stateid
);
6874 task_setup
.callback_data
= data
;
6876 msg
.rpc_argp
= &data
->args
;
6877 msg
.rpc_resp
= &data
->res
;
6878 nfs41_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 0);
6880 nfs4_set_sequence_privileged(&data
->args
.seq_args
);
6882 return rpc_run_task(&task_setup
);
6886 * nfs41_free_stateid - perform a FREE_STATEID operation
6888 * @server: server / transport on which to perform the operation
6889 * @stateid: state ID to release
6891 * Returns NFS_OK if the server freed "stateid". Otherwise a
6892 * negative NFS4ERR value is returned.
6894 static int nfs41_free_stateid(struct nfs_server
*server
, nfs4_stateid
*stateid
)
6896 struct rpc_task
*task
;
6899 task
= _nfs41_free_stateid(server
, stateid
, true);
6901 return PTR_ERR(task
);
6902 ret
= rpc_wait_for_completion_task(task
);
6904 ret
= task
->tk_status
;
6909 static int nfs41_free_lock_state(struct nfs_server
*server
, struct nfs4_lock_state
*lsp
)
6911 struct rpc_task
*task
;
6913 task
= _nfs41_free_stateid(server
, &lsp
->ls_stateid
, false);
6914 nfs4_free_lock_state(server
, lsp
);
6916 return PTR_ERR(task
);
6921 static bool nfs41_match_stateid(const nfs4_stateid
*s1
,
6922 const nfs4_stateid
*s2
)
6924 if (memcmp(s1
->other
, s2
->other
, sizeof(s1
->other
)) != 0)
6927 if (s1
->seqid
== s2
->seqid
)
6929 if (s1
->seqid
== 0 || s2
->seqid
== 0)
6935 #endif /* CONFIG_NFS_V4_1 */
6937 static bool nfs4_match_stateid(const nfs4_stateid
*s1
,
6938 const nfs4_stateid
*s2
)
6940 return nfs4_stateid_match(s1
, s2
);
6944 static const struct nfs4_state_recovery_ops nfs40_reboot_recovery_ops
= {
6945 .owner_flag_bit
= NFS_OWNER_RECLAIM_REBOOT
,
6946 .state_flag_bit
= NFS_STATE_RECLAIM_REBOOT
,
6947 .recover_open
= nfs4_open_reclaim
,
6948 .recover_lock
= nfs4_lock_reclaim
,
6949 .establish_clid
= nfs4_init_clientid
,
6950 .get_clid_cred
= nfs4_get_setclientid_cred
,
6951 .detect_trunking
= nfs40_discover_server_trunking
,
6954 #if defined(CONFIG_NFS_V4_1)
6955 static const struct nfs4_state_recovery_ops nfs41_reboot_recovery_ops
= {
6956 .owner_flag_bit
= NFS_OWNER_RECLAIM_REBOOT
,
6957 .state_flag_bit
= NFS_STATE_RECLAIM_REBOOT
,
6958 .recover_open
= nfs4_open_reclaim
,
6959 .recover_lock
= nfs4_lock_reclaim
,
6960 .establish_clid
= nfs41_init_clientid
,
6961 .get_clid_cred
= nfs4_get_exchange_id_cred
,
6962 .reclaim_complete
= nfs41_proc_reclaim_complete
,
6963 .detect_trunking
= nfs41_discover_server_trunking
,
6965 #endif /* CONFIG_NFS_V4_1 */
6967 static const struct nfs4_state_recovery_ops nfs40_nograce_recovery_ops
= {
6968 .owner_flag_bit
= NFS_OWNER_RECLAIM_NOGRACE
,
6969 .state_flag_bit
= NFS_STATE_RECLAIM_NOGRACE
,
6970 .recover_open
= nfs4_open_expired
,
6971 .recover_lock
= nfs4_lock_expired
,
6972 .establish_clid
= nfs4_init_clientid
,
6973 .get_clid_cred
= nfs4_get_setclientid_cred
,
6976 #if defined(CONFIG_NFS_V4_1)
6977 static const struct nfs4_state_recovery_ops nfs41_nograce_recovery_ops
= {
6978 .owner_flag_bit
= NFS_OWNER_RECLAIM_NOGRACE
,
6979 .state_flag_bit
= NFS_STATE_RECLAIM_NOGRACE
,
6980 .recover_open
= nfs41_open_expired
,
6981 .recover_lock
= nfs41_lock_expired
,
6982 .establish_clid
= nfs41_init_clientid
,
6983 .get_clid_cred
= nfs4_get_exchange_id_cred
,
6985 #endif /* CONFIG_NFS_V4_1 */
6987 static const struct nfs4_state_maintenance_ops nfs40_state_renewal_ops
= {
6988 .sched_state_renewal
= nfs4_proc_async_renew
,
6989 .get_state_renewal_cred_locked
= nfs4_get_renew_cred_locked
,
6990 .renew_lease
= nfs4_proc_renew
,
6993 #if defined(CONFIG_NFS_V4_1)
6994 static const struct nfs4_state_maintenance_ops nfs41_state_renewal_ops
= {
6995 .sched_state_renewal
= nfs41_proc_async_sequence
,
6996 .get_state_renewal_cred_locked
= nfs4_get_machine_cred_locked
,
6997 .renew_lease
= nfs4_proc_sequence
,
7001 static const struct nfs4_minor_version_ops nfs_v4_0_minor_ops
= {
7003 .init_caps
= NFS_CAP_READDIRPLUS
7004 | NFS_CAP_ATOMIC_OPEN
7005 | NFS_CAP_CHANGE_ATTR
7006 | NFS_CAP_POSIX_LOCK
,
7007 .call_sync
= _nfs4_call_sync
,
7008 .match_stateid
= nfs4_match_stateid
,
7009 .find_root_sec
= nfs4_find_root_sec
,
7010 .free_lock_state
= nfs4_release_lockowner
,
7011 .reboot_recovery_ops
= &nfs40_reboot_recovery_ops
,
7012 .nograce_recovery_ops
= &nfs40_nograce_recovery_ops
,
7013 .state_renewal_ops
= &nfs40_state_renewal_ops
,
7016 #if defined(CONFIG_NFS_V4_1)
7017 static const struct nfs4_minor_version_ops nfs_v4_1_minor_ops
= {
7019 .init_caps
= NFS_CAP_READDIRPLUS
7020 | NFS_CAP_ATOMIC_OPEN
7021 | NFS_CAP_CHANGE_ATTR
7022 | NFS_CAP_POSIX_LOCK
7023 | NFS_CAP_STATEID_NFSV41
7024 | NFS_CAP_ATOMIC_OPEN_V1
,
7025 .call_sync
= nfs4_call_sync_sequence
,
7026 .match_stateid
= nfs41_match_stateid
,
7027 .find_root_sec
= nfs41_find_root_sec
,
7028 .free_lock_state
= nfs41_free_lock_state
,
7029 .reboot_recovery_ops
= &nfs41_reboot_recovery_ops
,
7030 .nograce_recovery_ops
= &nfs41_nograce_recovery_ops
,
7031 .state_renewal_ops
= &nfs41_state_renewal_ops
,
7035 #if defined(CONFIG_NFS_V4_2)
7036 static const struct nfs4_minor_version_ops nfs_v4_2_minor_ops
= {
7038 .call_sync
= nfs4_call_sync_sequence
,
7039 .match_stateid
= nfs41_match_stateid
,
7040 .find_root_sec
= nfs41_find_root_sec
,
7041 .reboot_recovery_ops
= &nfs41_reboot_recovery_ops
,
7042 .nograce_recovery_ops
= &nfs41_nograce_recovery_ops
,
7043 .state_renewal_ops
= &nfs41_state_renewal_ops
,
7047 const struct nfs4_minor_version_ops
*nfs_v4_minor_ops
[] = {
7048 [0] = &nfs_v4_0_minor_ops
,
7049 #if defined(CONFIG_NFS_V4_1)
7050 [1] = &nfs_v4_1_minor_ops
,
7052 #if defined(CONFIG_NFS_V4_2)
7053 [2] = &nfs_v4_2_minor_ops
,
7057 const struct inode_operations nfs4_dir_inode_operations
= {
7058 .create
= nfs_create
,
7059 .lookup
= nfs_lookup
,
7060 .atomic_open
= nfs_atomic_open
,
7062 .unlink
= nfs_unlink
,
7063 .symlink
= nfs_symlink
,
7067 .rename
= nfs_rename
,
7068 .permission
= nfs_permission
,
7069 .getattr
= nfs_getattr
,
7070 .setattr
= nfs_setattr
,
7071 .getxattr
= generic_getxattr
,
7072 .setxattr
= generic_setxattr
,
7073 .listxattr
= generic_listxattr
,
7074 .removexattr
= generic_removexattr
,
7077 static const struct inode_operations nfs4_file_inode_operations
= {
7078 .permission
= nfs_permission
,
7079 .getattr
= nfs_getattr
,
7080 .setattr
= nfs_setattr
,
7081 .getxattr
= generic_getxattr
,
7082 .setxattr
= generic_setxattr
,
7083 .listxattr
= generic_listxattr
,
7084 .removexattr
= generic_removexattr
,
7087 const struct nfs_rpc_ops nfs_v4_clientops
= {
7088 .version
= 4, /* protocol version */
7089 .dentry_ops
= &nfs4_dentry_operations
,
7090 .dir_inode_ops
= &nfs4_dir_inode_operations
,
7091 .file_inode_ops
= &nfs4_file_inode_operations
,
7092 .file_ops
= &nfs4_file_operations
,
7093 .getroot
= nfs4_proc_get_root
,
7094 .submount
= nfs4_submount
,
7095 .try_mount
= nfs4_try_mount
,
7096 .getattr
= nfs4_proc_getattr
,
7097 .setattr
= nfs4_proc_setattr
,
7098 .lookup
= nfs4_proc_lookup
,
7099 .access
= nfs4_proc_access
,
7100 .readlink
= nfs4_proc_readlink
,
7101 .create
= nfs4_proc_create
,
7102 .remove
= nfs4_proc_remove
,
7103 .unlink_setup
= nfs4_proc_unlink_setup
,
7104 .unlink_rpc_prepare
= nfs4_proc_unlink_rpc_prepare
,
7105 .unlink_done
= nfs4_proc_unlink_done
,
7106 .rename
= nfs4_proc_rename
,
7107 .rename_setup
= nfs4_proc_rename_setup
,
7108 .rename_rpc_prepare
= nfs4_proc_rename_rpc_prepare
,
7109 .rename_done
= nfs4_proc_rename_done
,
7110 .link
= nfs4_proc_link
,
7111 .symlink
= nfs4_proc_symlink
,
7112 .mkdir
= nfs4_proc_mkdir
,
7113 .rmdir
= nfs4_proc_remove
,
7114 .readdir
= nfs4_proc_readdir
,
7115 .mknod
= nfs4_proc_mknod
,
7116 .statfs
= nfs4_proc_statfs
,
7117 .fsinfo
= nfs4_proc_fsinfo
,
7118 .pathconf
= nfs4_proc_pathconf
,
7119 .set_capabilities
= nfs4_server_capabilities
,
7120 .decode_dirent
= nfs4_decode_dirent
,
7121 .read_setup
= nfs4_proc_read_setup
,
7122 .read_pageio_init
= pnfs_pageio_init_read
,
7123 .read_rpc_prepare
= nfs4_proc_read_rpc_prepare
,
7124 .read_done
= nfs4_read_done
,
7125 .write_setup
= nfs4_proc_write_setup
,
7126 .write_pageio_init
= pnfs_pageio_init_write
,
7127 .write_rpc_prepare
= nfs4_proc_write_rpc_prepare
,
7128 .write_done
= nfs4_write_done
,
7129 .commit_setup
= nfs4_proc_commit_setup
,
7130 .commit_rpc_prepare
= nfs4_proc_commit_rpc_prepare
,
7131 .commit_done
= nfs4_commit_done
,
7132 .lock
= nfs4_proc_lock
,
7133 .clear_acl_cache
= nfs4_zap_acl_attr
,
7134 .close_context
= nfs4_close_context
,
7135 .open_context
= nfs4_atomic_open
,
7136 .have_delegation
= nfs4_have_delegation
,
7137 .return_delegation
= nfs4_inode_return_delegation
,
7138 .alloc_client
= nfs4_alloc_client
,
7139 .init_client
= nfs4_init_client
,
7140 .free_client
= nfs4_free_client
,
7141 .create_server
= nfs4_create_server
,
7142 .clone_server
= nfs_clone_server
,
7145 static const struct xattr_handler nfs4_xattr_nfs4_acl_handler
= {
7146 .prefix
= XATTR_NAME_NFSV4_ACL
,
7147 .list
= nfs4_xattr_list_nfs4_acl
,
7148 .get
= nfs4_xattr_get_nfs4_acl
,
7149 .set
= nfs4_xattr_set_nfs4_acl
,
7152 const struct xattr_handler
*nfs4_xattr_handlers
[] = {
7153 &nfs4_xattr_nfs4_acl_handler
,