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/file.h>
42 #include <linux/string.h>
43 #include <linux/ratelimit.h>
44 #include <linux/printk.h>
45 #include <linux/slab.h>
46 #include <linux/sunrpc/clnt.h>
47 #include <linux/nfs.h>
48 #include <linux/nfs4.h>
49 #include <linux/nfs_fs.h>
50 #include <linux/nfs_page.h>
51 #include <linux/nfs_mount.h>
52 #include <linux/namei.h>
53 #include <linux/mount.h>
54 #include <linux/module.h>
55 #include <linux/xattr.h>
56 #include <linux/utsname.h>
57 #include <linux/freezer.h>
60 #include "delegation.h"
66 #include "nfs4idmap.h"
67 #include "nfs4session.h"
70 #include "nfs4trace.h"
72 #define NFSDBG_FACILITY NFSDBG_PROC
74 #define NFS4_POLL_RETRY_MIN (HZ/10)
75 #define NFS4_POLL_RETRY_MAX (15*HZ)
78 static int _nfs4_proc_open(struct nfs4_opendata
*data
);
79 static int _nfs4_recover_proc_open(struct nfs4_opendata
*data
);
80 static int nfs4_do_fsinfo(struct nfs_server
*, struct nfs_fh
*, struct nfs_fsinfo
*);
81 static int nfs4_async_handle_error(struct rpc_task
*, const struct nfs_server
*, struct nfs4_state
*, long *);
82 static void nfs_fixup_referral_attributes(struct nfs_fattr
*fattr
);
83 static int nfs4_proc_getattr(struct nfs_server
*, struct nfs_fh
*, struct nfs_fattr
*, struct nfs4_label
*label
);
84 static int _nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
, struct nfs4_label
*label
);
85 static int nfs4_do_setattr(struct inode
*inode
, struct rpc_cred
*cred
,
86 struct nfs_fattr
*fattr
, struct iattr
*sattr
,
87 struct nfs4_state
*state
, struct nfs4_label
*ilabel
,
88 struct nfs4_label
*olabel
);
89 #ifdef CONFIG_NFS_V4_1
90 static int nfs41_test_stateid(struct nfs_server
*, nfs4_stateid
*,
92 static int nfs41_free_stateid(struct nfs_server
*, nfs4_stateid
*,
96 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
97 static inline struct nfs4_label
*
98 nfs4_label_init_security(struct inode
*dir
, struct dentry
*dentry
,
99 struct iattr
*sattr
, struct nfs4_label
*label
)
106 if (nfs_server_capable(dir
, NFS_CAP_SECURITY_LABEL
) == 0)
109 err
= security_dentry_init_security(dentry
, sattr
->ia_mode
,
110 &dentry
->d_name
, (void **)&label
->label
, &label
->len
);
117 nfs4_label_release_security(struct nfs4_label
*label
)
120 security_release_secctx(label
->label
, label
->len
);
122 static inline u32
*nfs4_bitmask(struct nfs_server
*server
, struct nfs4_label
*label
)
125 return server
->attr_bitmask
;
127 return server
->attr_bitmask_nl
;
130 static inline struct nfs4_label
*
131 nfs4_label_init_security(struct inode
*dir
, struct dentry
*dentry
,
132 struct iattr
*sattr
, struct nfs4_label
*l
)
135 nfs4_label_release_security(struct nfs4_label
*label
)
138 nfs4_bitmask(struct nfs_server
*server
, struct nfs4_label
*label
)
139 { return server
->attr_bitmask
; }
142 /* Prevent leaks of NFSv4 errors into userland */
143 static int nfs4_map_errors(int err
)
148 case -NFS4ERR_RESOURCE
:
149 case -NFS4ERR_LAYOUTTRYLATER
:
150 case -NFS4ERR_RECALLCONFLICT
:
152 case -NFS4ERR_WRONGSEC
:
153 case -NFS4ERR_WRONG_CRED
:
155 case -NFS4ERR_BADOWNER
:
156 case -NFS4ERR_BADNAME
:
158 case -NFS4ERR_SHARE_DENIED
:
160 case -NFS4ERR_MINOR_VERS_MISMATCH
:
161 return -EPROTONOSUPPORT
;
162 case -NFS4ERR_FILE_OPEN
:
165 dprintk("%s could not handle NFSv4 error %d\n",
173 * This is our standard bitmap for GETATTR requests.
175 const u32 nfs4_fattr_bitmap
[3] = {
177 | FATTR4_WORD0_CHANGE
180 | FATTR4_WORD0_FILEID
,
182 | FATTR4_WORD1_NUMLINKS
184 | FATTR4_WORD1_OWNER_GROUP
185 | FATTR4_WORD1_RAWDEV
186 | FATTR4_WORD1_SPACE_USED
187 | FATTR4_WORD1_TIME_ACCESS
188 | FATTR4_WORD1_TIME_METADATA
189 | FATTR4_WORD1_TIME_MODIFY
190 | FATTR4_WORD1_MOUNTED_ON_FILEID
,
191 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
192 FATTR4_WORD2_SECURITY_LABEL
196 static const u32 nfs4_pnfs_open_bitmap
[3] = {
198 | FATTR4_WORD0_CHANGE
201 | FATTR4_WORD0_FILEID
,
203 | FATTR4_WORD1_NUMLINKS
205 | FATTR4_WORD1_OWNER_GROUP
206 | FATTR4_WORD1_RAWDEV
207 | FATTR4_WORD1_SPACE_USED
208 | FATTR4_WORD1_TIME_ACCESS
209 | FATTR4_WORD1_TIME_METADATA
210 | FATTR4_WORD1_TIME_MODIFY
,
211 FATTR4_WORD2_MDSTHRESHOLD
214 static const u32 nfs4_open_noattr_bitmap
[3] = {
216 | FATTR4_WORD0_CHANGE
217 | FATTR4_WORD0_FILEID
,
220 const u32 nfs4_statfs_bitmap
[3] = {
221 FATTR4_WORD0_FILES_AVAIL
222 | FATTR4_WORD0_FILES_FREE
223 | FATTR4_WORD0_FILES_TOTAL
,
224 FATTR4_WORD1_SPACE_AVAIL
225 | FATTR4_WORD1_SPACE_FREE
226 | FATTR4_WORD1_SPACE_TOTAL
229 const u32 nfs4_pathconf_bitmap
[3] = {
231 | FATTR4_WORD0_MAXNAME
,
235 const u32 nfs4_fsinfo_bitmap
[3] = { FATTR4_WORD0_MAXFILESIZE
236 | FATTR4_WORD0_MAXREAD
237 | FATTR4_WORD0_MAXWRITE
238 | FATTR4_WORD0_LEASE_TIME
,
239 FATTR4_WORD1_TIME_DELTA
240 | FATTR4_WORD1_FS_LAYOUT_TYPES
,
241 FATTR4_WORD2_LAYOUT_BLKSIZE
244 const u32 nfs4_fs_locations_bitmap
[3] = {
246 | FATTR4_WORD0_CHANGE
249 | FATTR4_WORD0_FILEID
250 | FATTR4_WORD0_FS_LOCATIONS
,
252 | FATTR4_WORD1_NUMLINKS
254 | FATTR4_WORD1_OWNER_GROUP
255 | FATTR4_WORD1_RAWDEV
256 | FATTR4_WORD1_SPACE_USED
257 | FATTR4_WORD1_TIME_ACCESS
258 | FATTR4_WORD1_TIME_METADATA
259 | FATTR4_WORD1_TIME_MODIFY
260 | FATTR4_WORD1_MOUNTED_ON_FILEID
,
263 static void nfs4_setup_readdir(u64 cookie
, __be32
*verifier
, struct dentry
*dentry
,
264 struct nfs4_readdir_arg
*readdir
)
269 readdir
->cookie
= cookie
;
270 memcpy(&readdir
->verifier
, verifier
, sizeof(readdir
->verifier
));
275 memset(&readdir
->verifier
, 0, sizeof(readdir
->verifier
));
280 * NFSv4 servers do not return entries for '.' and '..'
281 * Therefore, we fake these entries here. We let '.'
282 * have cookie 0 and '..' have cookie 1. Note that
283 * when talking to the server, we always send cookie 0
286 start
= p
= kmap_atomic(*readdir
->pages
);
289 *p
++ = xdr_one
; /* next */
290 *p
++ = xdr_zero
; /* cookie, first word */
291 *p
++ = xdr_one
; /* cookie, second word */
292 *p
++ = xdr_one
; /* entry len */
293 memcpy(p
, ".\0\0\0", 4); /* entry */
295 *p
++ = xdr_one
; /* bitmap length */
296 *p
++ = htonl(FATTR4_WORD0_FILEID
); /* bitmap */
297 *p
++ = htonl(8); /* attribute buffer length */
298 p
= xdr_encode_hyper(p
, NFS_FILEID(d_inode(dentry
)));
301 *p
++ = xdr_one
; /* next */
302 *p
++ = xdr_zero
; /* cookie, first word */
303 *p
++ = xdr_two
; /* cookie, second word */
304 *p
++ = xdr_two
; /* entry len */
305 memcpy(p
, "..\0\0", 4); /* entry */
307 *p
++ = xdr_one
; /* bitmap length */
308 *p
++ = htonl(FATTR4_WORD0_FILEID
); /* bitmap */
309 *p
++ = htonl(8); /* attribute buffer length */
310 p
= xdr_encode_hyper(p
, NFS_FILEID(d_inode(dentry
->d_parent
)));
312 readdir
->pgbase
= (char *)p
- (char *)start
;
313 readdir
->count
-= readdir
->pgbase
;
314 kunmap_atomic(start
);
317 static long nfs4_update_delay(long *timeout
)
321 return NFS4_POLL_RETRY_MAX
;
323 *timeout
= NFS4_POLL_RETRY_MIN
;
324 if (*timeout
> NFS4_POLL_RETRY_MAX
)
325 *timeout
= NFS4_POLL_RETRY_MAX
;
331 static int nfs4_delay(struct rpc_clnt
*clnt
, long *timeout
)
337 freezable_schedule_timeout_killable_unsafe(
338 nfs4_update_delay(timeout
));
339 if (fatal_signal_pending(current
))
344 /* This is the error handling routine for processes that are allowed
347 int nfs4_handle_exception(struct nfs_server
*server
, int errorcode
, struct nfs4_exception
*exception
)
349 struct nfs_client
*clp
= server
->nfs_client
;
350 struct nfs4_state
*state
= exception
->state
;
351 struct inode
*inode
= exception
->inode
;
354 exception
->retry
= 0;
358 case -NFS4ERR_OPENMODE
:
359 case -NFS4ERR_DELEG_REVOKED
:
360 case -NFS4ERR_ADMIN_REVOKED
:
361 case -NFS4ERR_BAD_STATEID
:
362 if (inode
&& nfs4_have_delegation(inode
, FMODE_READ
)) {
363 nfs4_inode_return_delegation(inode
);
364 exception
->retry
= 1;
369 ret
= nfs4_schedule_stateid_recovery(server
, state
);
372 goto wait_on_recovery
;
373 case -NFS4ERR_EXPIRED
:
375 ret
= nfs4_schedule_stateid_recovery(server
, state
);
379 case -NFS4ERR_STALE_STATEID
:
380 case -NFS4ERR_STALE_CLIENTID
:
381 nfs4_schedule_lease_recovery(clp
);
382 goto wait_on_recovery
;
384 ret
= nfs4_schedule_migration_recovery(server
);
387 goto wait_on_recovery
;
388 case -NFS4ERR_LEASE_MOVED
:
389 nfs4_schedule_lease_moved_recovery(clp
);
390 goto wait_on_recovery
;
391 #if defined(CONFIG_NFS_V4_1)
392 case -NFS4ERR_BADSESSION
:
393 case -NFS4ERR_BADSLOT
:
394 case -NFS4ERR_BAD_HIGH_SLOT
:
395 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
396 case -NFS4ERR_DEADSESSION
:
397 case -NFS4ERR_SEQ_FALSE_RETRY
:
398 case -NFS4ERR_SEQ_MISORDERED
:
399 dprintk("%s ERROR: %d Reset session\n", __func__
,
401 nfs4_schedule_session_recovery(clp
->cl_session
, errorcode
);
402 goto wait_on_recovery
;
403 #endif /* defined(CONFIG_NFS_V4_1) */
404 case -NFS4ERR_FILE_OPEN
:
405 if (exception
->timeout
> HZ
) {
406 /* We have retried a decent amount, time to
414 ret
= nfs4_delay(server
->client
, &exception
->timeout
);
417 case -NFS4ERR_RETRY_UNCACHED_REP
:
418 case -NFS4ERR_OLD_STATEID
:
419 exception
->retry
= 1;
421 case -NFS4ERR_BADOWNER
:
422 /* The following works around a Linux server bug! */
423 case -NFS4ERR_BADNAME
:
424 if (server
->caps
& NFS_CAP_UIDGID_NOMAP
) {
425 server
->caps
&= ~NFS_CAP_UIDGID_NOMAP
;
426 exception
->retry
= 1;
427 printk(KERN_WARNING
"NFS: v4 server %s "
428 "does not accept raw "
430 "Reenabling the idmapper.\n",
431 server
->nfs_client
->cl_hostname
);
434 /* We failed to handle the error */
435 return nfs4_map_errors(ret
);
437 ret
= nfs4_wait_clnt_recover(clp
);
438 if (test_bit(NFS_MIG_FAILED
, &server
->mig_status
))
441 exception
->retry
= 1;
446 * Return 'true' if 'clp' is using an rpc_client that is integrity protected
447 * or 'false' otherwise.
449 static bool _nfs4_is_integrity_protected(struct nfs_client
*clp
)
451 rpc_authflavor_t flavor
= clp
->cl_rpcclient
->cl_auth
->au_flavor
;
453 if (flavor
== RPC_AUTH_GSS_KRB5I
||
454 flavor
== RPC_AUTH_GSS_KRB5P
)
460 static void do_renew_lease(struct nfs_client
*clp
, unsigned long timestamp
)
462 spin_lock(&clp
->cl_lock
);
463 if (time_before(clp
->cl_last_renewal
,timestamp
))
464 clp
->cl_last_renewal
= timestamp
;
465 spin_unlock(&clp
->cl_lock
);
468 static void renew_lease(const struct nfs_server
*server
, unsigned long timestamp
)
470 struct nfs_client
*clp
= server
->nfs_client
;
472 if (!nfs4_has_session(clp
))
473 do_renew_lease(clp
, timestamp
);
476 struct nfs4_call_sync_data
{
477 const struct nfs_server
*seq_server
;
478 struct nfs4_sequence_args
*seq_args
;
479 struct nfs4_sequence_res
*seq_res
;
482 void nfs4_init_sequence(struct nfs4_sequence_args
*args
,
483 struct nfs4_sequence_res
*res
, int cache_reply
)
485 args
->sa_slot
= NULL
;
486 args
->sa_cache_this
= cache_reply
;
487 args
->sa_privileged
= 0;
492 static void nfs4_set_sequence_privileged(struct nfs4_sequence_args
*args
)
494 args
->sa_privileged
= 1;
497 int nfs40_setup_sequence(struct nfs4_slot_table
*tbl
,
498 struct nfs4_sequence_args
*args
,
499 struct nfs4_sequence_res
*res
,
500 struct rpc_task
*task
)
502 struct nfs4_slot
*slot
;
504 /* slot already allocated? */
505 if (res
->sr_slot
!= NULL
)
508 spin_lock(&tbl
->slot_tbl_lock
);
509 if (nfs4_slot_tbl_draining(tbl
) && !args
->sa_privileged
)
512 slot
= nfs4_alloc_slot(tbl
);
514 if (slot
== ERR_PTR(-ENOMEM
))
515 task
->tk_timeout
= HZ
>> 2;
518 spin_unlock(&tbl
->slot_tbl_lock
);
520 args
->sa_slot
= slot
;
524 rpc_call_start(task
);
528 if (args
->sa_privileged
)
529 rpc_sleep_on_priority(&tbl
->slot_tbl_waitq
, task
,
530 NULL
, RPC_PRIORITY_PRIVILEGED
);
532 rpc_sleep_on(&tbl
->slot_tbl_waitq
, task
, NULL
);
533 spin_unlock(&tbl
->slot_tbl_lock
);
536 EXPORT_SYMBOL_GPL(nfs40_setup_sequence
);
538 static int nfs40_sequence_done(struct rpc_task
*task
,
539 struct nfs4_sequence_res
*res
)
541 struct nfs4_slot
*slot
= res
->sr_slot
;
542 struct nfs4_slot_table
*tbl
;
548 spin_lock(&tbl
->slot_tbl_lock
);
549 if (!nfs41_wake_and_assign_slot(tbl
, slot
))
550 nfs4_free_slot(tbl
, slot
);
551 spin_unlock(&tbl
->slot_tbl_lock
);
558 #if defined(CONFIG_NFS_V4_1)
560 static void nfs41_sequence_free_slot(struct nfs4_sequence_res
*res
)
562 struct nfs4_session
*session
;
563 struct nfs4_slot_table
*tbl
;
564 struct nfs4_slot
*slot
= res
->sr_slot
;
565 bool send_new_highest_used_slotid
= false;
568 session
= tbl
->session
;
570 spin_lock(&tbl
->slot_tbl_lock
);
571 /* Be nice to the server: try to ensure that the last transmitted
572 * value for highest_user_slotid <= target_highest_slotid
574 if (tbl
->highest_used_slotid
> tbl
->target_highest_slotid
)
575 send_new_highest_used_slotid
= true;
577 if (nfs41_wake_and_assign_slot(tbl
, slot
)) {
578 send_new_highest_used_slotid
= false;
581 nfs4_free_slot(tbl
, slot
);
583 if (tbl
->highest_used_slotid
!= NFS4_NO_SLOT
)
584 send_new_highest_used_slotid
= false;
586 spin_unlock(&tbl
->slot_tbl_lock
);
588 if (send_new_highest_used_slotid
)
589 nfs41_notify_server(session
->clp
);
592 int nfs41_sequence_done(struct rpc_task
*task
, struct nfs4_sequence_res
*res
)
594 struct nfs4_session
*session
;
595 struct nfs4_slot
*slot
= res
->sr_slot
;
596 struct nfs_client
*clp
;
597 bool interrupted
= false;
602 /* don't increment the sequence number if the task wasn't sent */
603 if (!RPC_WAS_SENT(task
))
606 session
= slot
->table
->session
;
608 if (slot
->interrupted
) {
609 slot
->interrupted
= 0;
613 trace_nfs4_sequence_done(session
, res
);
614 /* Check the SEQUENCE operation status */
615 switch (res
->sr_status
) {
617 /* Update the slot's sequence and clientid lease timer */
620 do_renew_lease(clp
, res
->sr_timestamp
);
621 /* Check sequence flags */
622 nfs41_handle_sequence_flag_errors(clp
, res
->sr_status_flags
);
623 nfs41_update_target_slotid(slot
->table
, slot
, res
);
627 * sr_status remains 1 if an RPC level error occurred.
628 * The server may or may not have processed the sequence
630 * Mark the slot as having hosted an interrupted RPC call.
632 slot
->interrupted
= 1;
635 /* The server detected a resend of the RPC call and
636 * returned NFS4ERR_DELAY as per Section 2.10.6.2
639 dprintk("%s: slot=%u seq=%u: Operation in progress\n",
644 case -NFS4ERR_BADSLOT
:
646 * The slot id we used was probably retired. Try again
647 * using a different slot id.
650 case -NFS4ERR_SEQ_MISORDERED
:
652 * Was the last operation on this sequence interrupted?
653 * If so, retry after bumping the sequence number.
660 * Could this slot have been previously retired?
661 * If so, then the server may be expecting seq_nr = 1!
663 if (slot
->seq_nr
!= 1) {
668 case -NFS4ERR_SEQ_FALSE_RETRY
:
672 /* Just update the slot sequence no. */
676 /* The session may be reset by one of the error handlers. */
677 dprintk("%s: Error %d free the slot \n", __func__
, res
->sr_status
);
678 nfs41_sequence_free_slot(res
);
682 if (rpc_restart_call_prepare(task
)) {
688 if (!rpc_restart_call(task
))
690 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
693 EXPORT_SYMBOL_GPL(nfs41_sequence_done
);
695 int nfs4_sequence_done(struct rpc_task
*task
, struct nfs4_sequence_res
*res
)
697 if (res
->sr_slot
== NULL
)
699 if (!res
->sr_slot
->table
->session
)
700 return nfs40_sequence_done(task
, res
);
701 return nfs41_sequence_done(task
, res
);
703 EXPORT_SYMBOL_GPL(nfs4_sequence_done
);
705 int nfs41_setup_sequence(struct nfs4_session
*session
,
706 struct nfs4_sequence_args
*args
,
707 struct nfs4_sequence_res
*res
,
708 struct rpc_task
*task
)
710 struct nfs4_slot
*slot
;
711 struct nfs4_slot_table
*tbl
;
713 dprintk("--> %s\n", __func__
);
714 /* slot already allocated? */
715 if (res
->sr_slot
!= NULL
)
718 tbl
= &session
->fc_slot_table
;
720 task
->tk_timeout
= 0;
722 spin_lock(&tbl
->slot_tbl_lock
);
723 if (test_bit(NFS4_SLOT_TBL_DRAINING
, &tbl
->slot_tbl_state
) &&
724 !args
->sa_privileged
) {
725 /* The state manager will wait until the slot table is empty */
726 dprintk("%s session is draining\n", __func__
);
730 slot
= nfs4_alloc_slot(tbl
);
732 /* If out of memory, try again in 1/4 second */
733 if (slot
== ERR_PTR(-ENOMEM
))
734 task
->tk_timeout
= HZ
>> 2;
735 dprintk("<-- %s: no free slots\n", __func__
);
738 spin_unlock(&tbl
->slot_tbl_lock
);
740 args
->sa_slot
= slot
;
742 dprintk("<-- %s slotid=%u seqid=%u\n", __func__
,
743 slot
->slot_nr
, slot
->seq_nr
);
746 res
->sr_timestamp
= jiffies
;
747 res
->sr_status_flags
= 0;
749 * sr_status is only set in decode_sequence, and so will remain
750 * set to 1 if an rpc level failure occurs.
753 trace_nfs4_setup_sequence(session
, args
);
755 rpc_call_start(task
);
758 /* Privileged tasks are queued with top priority */
759 if (args
->sa_privileged
)
760 rpc_sleep_on_priority(&tbl
->slot_tbl_waitq
, task
,
761 NULL
, RPC_PRIORITY_PRIVILEGED
);
763 rpc_sleep_on(&tbl
->slot_tbl_waitq
, task
, NULL
);
764 spin_unlock(&tbl
->slot_tbl_lock
);
767 EXPORT_SYMBOL_GPL(nfs41_setup_sequence
);
769 static int nfs4_setup_sequence(const struct nfs_server
*server
,
770 struct nfs4_sequence_args
*args
,
771 struct nfs4_sequence_res
*res
,
772 struct rpc_task
*task
)
774 struct nfs4_session
*session
= nfs4_get_session(server
);
778 return nfs40_setup_sequence(server
->nfs_client
->cl_slot_tbl
,
781 dprintk("--> %s clp %p session %p sr_slot %u\n",
782 __func__
, session
->clp
, session
, res
->sr_slot
?
783 res
->sr_slot
->slot_nr
: NFS4_NO_SLOT
);
785 ret
= nfs41_setup_sequence(session
, args
, res
, task
);
787 dprintk("<-- %s status=%d\n", __func__
, ret
);
791 static void nfs41_call_sync_prepare(struct rpc_task
*task
, void *calldata
)
793 struct nfs4_call_sync_data
*data
= calldata
;
794 struct nfs4_session
*session
= nfs4_get_session(data
->seq_server
);
796 dprintk("--> %s data->seq_server %p\n", __func__
, data
->seq_server
);
798 nfs41_setup_sequence(session
, data
->seq_args
, data
->seq_res
, task
);
801 static void nfs41_call_sync_done(struct rpc_task
*task
, void *calldata
)
803 struct nfs4_call_sync_data
*data
= calldata
;
805 nfs41_sequence_done(task
, data
->seq_res
);
808 static const struct rpc_call_ops nfs41_call_sync_ops
= {
809 .rpc_call_prepare
= nfs41_call_sync_prepare
,
810 .rpc_call_done
= nfs41_call_sync_done
,
813 #else /* !CONFIG_NFS_V4_1 */
815 static int nfs4_setup_sequence(const struct nfs_server
*server
,
816 struct nfs4_sequence_args
*args
,
817 struct nfs4_sequence_res
*res
,
818 struct rpc_task
*task
)
820 return nfs40_setup_sequence(server
->nfs_client
->cl_slot_tbl
,
824 int nfs4_sequence_done(struct rpc_task
*task
,
825 struct nfs4_sequence_res
*res
)
827 return nfs40_sequence_done(task
, res
);
829 EXPORT_SYMBOL_GPL(nfs4_sequence_done
);
831 #endif /* !CONFIG_NFS_V4_1 */
833 static void nfs40_call_sync_prepare(struct rpc_task
*task
, void *calldata
)
835 struct nfs4_call_sync_data
*data
= calldata
;
836 nfs4_setup_sequence(data
->seq_server
,
837 data
->seq_args
, data
->seq_res
, task
);
840 static void nfs40_call_sync_done(struct rpc_task
*task
, void *calldata
)
842 struct nfs4_call_sync_data
*data
= calldata
;
843 nfs4_sequence_done(task
, data
->seq_res
);
846 static const struct rpc_call_ops nfs40_call_sync_ops
= {
847 .rpc_call_prepare
= nfs40_call_sync_prepare
,
848 .rpc_call_done
= nfs40_call_sync_done
,
851 static int nfs4_call_sync_sequence(struct rpc_clnt
*clnt
,
852 struct nfs_server
*server
,
853 struct rpc_message
*msg
,
854 struct nfs4_sequence_args
*args
,
855 struct nfs4_sequence_res
*res
)
858 struct rpc_task
*task
;
859 struct nfs_client
*clp
= server
->nfs_client
;
860 struct nfs4_call_sync_data data
= {
861 .seq_server
= server
,
865 struct rpc_task_setup task_setup
= {
868 .callback_ops
= clp
->cl_mvops
->call_sync_ops
,
869 .callback_data
= &data
872 task
= rpc_run_task(&task_setup
);
876 ret
= task
->tk_status
;
882 int nfs4_call_sync(struct rpc_clnt
*clnt
,
883 struct nfs_server
*server
,
884 struct rpc_message
*msg
,
885 struct nfs4_sequence_args
*args
,
886 struct nfs4_sequence_res
*res
,
889 nfs4_init_sequence(args
, res
, cache_reply
);
890 return nfs4_call_sync_sequence(clnt
, server
, msg
, args
, res
);
893 static void update_changeattr(struct inode
*dir
, struct nfs4_change_info
*cinfo
)
895 struct nfs_inode
*nfsi
= NFS_I(dir
);
897 spin_lock(&dir
->i_lock
);
898 nfsi
->cache_validity
|= NFS_INO_INVALID_ATTR
|NFS_INO_INVALID_DATA
;
899 if (!cinfo
->atomic
|| cinfo
->before
!= dir
->i_version
)
900 nfs_force_lookup_revalidate(dir
);
901 dir
->i_version
= cinfo
->after
;
902 nfsi
->attr_gencount
= nfs_inc_attr_generation_counter();
903 nfs_fscache_invalidate(dir
);
904 spin_unlock(&dir
->i_lock
);
907 struct nfs4_opendata
{
909 struct nfs_openargs o_arg
;
910 struct nfs_openres o_res
;
911 struct nfs_open_confirmargs c_arg
;
912 struct nfs_open_confirmres c_res
;
913 struct nfs4_string owner_name
;
914 struct nfs4_string group_name
;
915 struct nfs4_label
*a_label
;
916 struct nfs_fattr f_attr
;
917 struct nfs4_label
*f_label
;
919 struct dentry
*dentry
;
920 struct nfs4_state_owner
*owner
;
921 struct nfs4_state
*state
;
923 unsigned long timestamp
;
924 unsigned int rpc_done
: 1;
925 unsigned int file_created
: 1;
926 unsigned int is_recover
: 1;
931 static bool nfs4_clear_cap_atomic_open_v1(struct nfs_server
*server
,
932 int err
, struct nfs4_exception
*exception
)
936 if (!(server
->caps
& NFS_CAP_ATOMIC_OPEN_V1
))
938 server
->caps
&= ~NFS_CAP_ATOMIC_OPEN_V1
;
939 exception
->retry
= 1;
944 nfs4_map_atomic_open_share(struct nfs_server
*server
,
945 fmode_t fmode
, int openflags
)
949 switch (fmode
& (FMODE_READ
| FMODE_WRITE
)) {
951 res
= NFS4_SHARE_ACCESS_READ
;
954 res
= NFS4_SHARE_ACCESS_WRITE
;
956 case FMODE_READ
|FMODE_WRITE
:
957 res
= NFS4_SHARE_ACCESS_BOTH
;
959 if (!(server
->caps
& NFS_CAP_ATOMIC_OPEN_V1
))
961 /* Want no delegation if we're using O_DIRECT */
962 if (openflags
& O_DIRECT
)
963 res
|= NFS4_SHARE_WANT_NO_DELEG
;
968 static enum open_claim_type4
969 nfs4_map_atomic_open_claim(struct nfs_server
*server
,
970 enum open_claim_type4 claim
)
972 if (server
->caps
& NFS_CAP_ATOMIC_OPEN_V1
)
977 case NFS4_OPEN_CLAIM_FH
:
978 return NFS4_OPEN_CLAIM_NULL
;
979 case NFS4_OPEN_CLAIM_DELEG_CUR_FH
:
980 return NFS4_OPEN_CLAIM_DELEGATE_CUR
;
981 case NFS4_OPEN_CLAIM_DELEG_PREV_FH
:
982 return NFS4_OPEN_CLAIM_DELEGATE_PREV
;
986 static void nfs4_init_opendata_res(struct nfs4_opendata
*p
)
988 p
->o_res
.f_attr
= &p
->f_attr
;
989 p
->o_res
.f_label
= p
->f_label
;
990 p
->o_res
.seqid
= p
->o_arg
.seqid
;
991 p
->c_res
.seqid
= p
->c_arg
.seqid
;
992 p
->o_res
.server
= p
->o_arg
.server
;
993 p
->o_res
.access_request
= p
->o_arg
.access
;
994 nfs_fattr_init(&p
->f_attr
);
995 nfs_fattr_init_names(&p
->f_attr
, &p
->owner_name
, &p
->group_name
);
998 static struct nfs4_opendata
*nfs4_opendata_alloc(struct dentry
*dentry
,
999 struct nfs4_state_owner
*sp
, fmode_t fmode
, int flags
,
1000 const struct iattr
*attrs
,
1001 struct nfs4_label
*label
,
1002 enum open_claim_type4 claim
,
1005 struct dentry
*parent
= dget_parent(dentry
);
1006 struct inode
*dir
= d_inode(parent
);
1007 struct nfs_server
*server
= NFS_SERVER(dir
);
1008 struct nfs_seqid
*(*alloc_seqid
)(struct nfs_seqid_counter
*, gfp_t
);
1009 struct nfs4_opendata
*p
;
1011 p
= kzalloc(sizeof(*p
), gfp_mask
);
1015 p
->f_label
= nfs4_label_alloc(server
, gfp_mask
);
1016 if (IS_ERR(p
->f_label
))
1019 p
->a_label
= nfs4_label_alloc(server
, gfp_mask
);
1020 if (IS_ERR(p
->a_label
))
1023 alloc_seqid
= server
->nfs_client
->cl_mvops
->alloc_seqid
;
1024 p
->o_arg
.seqid
= alloc_seqid(&sp
->so_seqid
, gfp_mask
);
1025 if (IS_ERR(p
->o_arg
.seqid
))
1026 goto err_free_label
;
1027 nfs_sb_active(dentry
->d_sb
);
1028 p
->dentry
= dget(dentry
);
1031 atomic_inc(&sp
->so_count
);
1032 p
->o_arg
.open_flags
= flags
;
1033 p
->o_arg
.fmode
= fmode
& (FMODE_READ
|FMODE_WRITE
);
1034 p
->o_arg
.share_access
= nfs4_map_atomic_open_share(server
,
1036 /* don't put an ACCESS op in OPEN compound if O_EXCL, because ACCESS
1037 * will return permission denied for all bits until close */
1038 if (!(flags
& O_EXCL
)) {
1039 /* ask server to check for all possible rights as results
1041 p
->o_arg
.access
= NFS4_ACCESS_READ
| NFS4_ACCESS_MODIFY
|
1042 NFS4_ACCESS_EXTEND
| NFS4_ACCESS_EXECUTE
;
1044 p
->o_arg
.clientid
= server
->nfs_client
->cl_clientid
;
1045 p
->o_arg
.id
.create_time
= ktime_to_ns(sp
->so_seqid
.create_time
);
1046 p
->o_arg
.id
.uniquifier
= sp
->so_seqid
.owner_id
;
1047 p
->o_arg
.name
= &dentry
->d_name
;
1048 p
->o_arg
.server
= server
;
1049 p
->o_arg
.bitmask
= nfs4_bitmask(server
, label
);
1050 p
->o_arg
.open_bitmap
= &nfs4_fattr_bitmap
[0];
1051 p
->o_arg
.label
= nfs4_label_copy(p
->a_label
, label
);
1052 p
->o_arg
.claim
= nfs4_map_atomic_open_claim(server
, claim
);
1053 switch (p
->o_arg
.claim
) {
1054 case NFS4_OPEN_CLAIM_NULL
:
1055 case NFS4_OPEN_CLAIM_DELEGATE_CUR
:
1056 case NFS4_OPEN_CLAIM_DELEGATE_PREV
:
1057 p
->o_arg
.fh
= NFS_FH(dir
);
1059 case NFS4_OPEN_CLAIM_PREVIOUS
:
1060 case NFS4_OPEN_CLAIM_FH
:
1061 case NFS4_OPEN_CLAIM_DELEG_CUR_FH
:
1062 case NFS4_OPEN_CLAIM_DELEG_PREV_FH
:
1063 p
->o_arg
.fh
= NFS_FH(d_inode(dentry
));
1065 if (attrs
!= NULL
&& attrs
->ia_valid
!= 0) {
1068 p
->o_arg
.u
.attrs
= &p
->attrs
;
1069 memcpy(&p
->attrs
, attrs
, sizeof(p
->attrs
));
1072 verf
[1] = current
->pid
;
1073 memcpy(p
->o_arg
.u
.verifier
.data
, verf
,
1074 sizeof(p
->o_arg
.u
.verifier
.data
));
1076 p
->c_arg
.fh
= &p
->o_res
.fh
;
1077 p
->c_arg
.stateid
= &p
->o_res
.stateid
;
1078 p
->c_arg
.seqid
= p
->o_arg
.seqid
;
1079 nfs4_init_opendata_res(p
);
1080 kref_init(&p
->kref
);
1084 nfs4_label_free(p
->a_label
);
1086 nfs4_label_free(p
->f_label
);
1094 static void nfs4_opendata_free(struct kref
*kref
)
1096 struct nfs4_opendata
*p
= container_of(kref
,
1097 struct nfs4_opendata
, kref
);
1098 struct super_block
*sb
= p
->dentry
->d_sb
;
1100 nfs_free_seqid(p
->o_arg
.seqid
);
1101 if (p
->state
!= NULL
)
1102 nfs4_put_open_state(p
->state
);
1103 nfs4_put_state_owner(p
->owner
);
1105 nfs4_label_free(p
->a_label
);
1106 nfs4_label_free(p
->f_label
);
1110 nfs_sb_deactive(sb
);
1111 nfs_fattr_free_names(&p
->f_attr
);
1112 kfree(p
->f_attr
.mdsthreshold
);
1116 static void nfs4_opendata_put(struct nfs4_opendata
*p
)
1119 kref_put(&p
->kref
, nfs4_opendata_free
);
1122 static int nfs4_wait_for_completion_rpc_task(struct rpc_task
*task
)
1126 ret
= rpc_wait_for_completion_task(task
);
1130 static int can_open_cached(struct nfs4_state
*state
, fmode_t mode
, int open_mode
)
1134 if (open_mode
& (O_EXCL
|O_TRUNC
))
1136 switch (mode
& (FMODE_READ
|FMODE_WRITE
)) {
1138 ret
|= test_bit(NFS_O_RDONLY_STATE
, &state
->flags
) != 0
1139 && state
->n_rdonly
!= 0;
1142 ret
|= test_bit(NFS_O_WRONLY_STATE
, &state
->flags
) != 0
1143 && state
->n_wronly
!= 0;
1145 case FMODE_READ
|FMODE_WRITE
:
1146 ret
|= test_bit(NFS_O_RDWR_STATE
, &state
->flags
) != 0
1147 && state
->n_rdwr
!= 0;
1153 static int can_open_delegated(struct nfs_delegation
*delegation
, fmode_t fmode
,
1154 enum open_claim_type4 claim
)
1156 if (delegation
== NULL
)
1158 if ((delegation
->type
& fmode
) != fmode
)
1160 if (test_bit(NFS_DELEGATION_RETURNING
, &delegation
->flags
))
1163 case NFS4_OPEN_CLAIM_NULL
:
1164 case NFS4_OPEN_CLAIM_FH
:
1166 case NFS4_OPEN_CLAIM_PREVIOUS
:
1167 if (!test_bit(NFS_DELEGATION_NEED_RECLAIM
, &delegation
->flags
))
1172 nfs_mark_delegation_referenced(delegation
);
1176 static void update_open_stateflags(struct nfs4_state
*state
, fmode_t fmode
)
1185 case FMODE_READ
|FMODE_WRITE
:
1188 nfs4_state_set_mode_locked(state
, state
->state
| fmode
);
1191 static void nfs_test_and_clear_all_open_stateid(struct nfs4_state
*state
)
1193 struct nfs_client
*clp
= state
->owner
->so_server
->nfs_client
;
1194 bool need_recover
= false;
1196 if (test_and_clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
) && state
->n_rdonly
)
1197 need_recover
= true;
1198 if (test_and_clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
) && state
->n_wronly
)
1199 need_recover
= true;
1200 if (test_and_clear_bit(NFS_O_RDWR_STATE
, &state
->flags
) && state
->n_rdwr
)
1201 need_recover
= true;
1203 nfs4_state_mark_reclaim_nograce(clp
, state
);
1206 static bool nfs_need_update_open_stateid(struct nfs4_state
*state
,
1207 nfs4_stateid
*stateid
)
1209 if (test_and_set_bit(NFS_OPEN_STATE
, &state
->flags
) == 0)
1211 if (!nfs4_stateid_match_other(stateid
, &state
->open_stateid
)) {
1212 nfs_test_and_clear_all_open_stateid(state
);
1215 if (nfs4_stateid_is_newer(stateid
, &state
->open_stateid
))
1220 static void nfs_resync_open_stateid_locked(struct nfs4_state
*state
)
1222 if (!(state
->n_wronly
|| state
->n_rdonly
|| state
->n_rdwr
))
1224 if (state
->n_wronly
)
1225 set_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1226 if (state
->n_rdonly
)
1227 set_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1229 set_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1230 set_bit(NFS_OPEN_STATE
, &state
->flags
);
1233 static void nfs_clear_open_stateid_locked(struct nfs4_state
*state
,
1234 nfs4_stateid
*stateid
, fmode_t fmode
)
1236 clear_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1237 switch (fmode
& (FMODE_READ
|FMODE_WRITE
)) {
1239 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1242 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1245 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1246 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1247 clear_bit(NFS_OPEN_STATE
, &state
->flags
);
1249 if (stateid
== NULL
)
1251 /* Handle races with OPEN */
1252 if (!nfs4_stateid_match_other(stateid
, &state
->open_stateid
) ||
1253 !nfs4_stateid_is_newer(stateid
, &state
->open_stateid
)) {
1254 nfs_resync_open_stateid_locked(state
);
1257 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0)
1258 nfs4_stateid_copy(&state
->stateid
, stateid
);
1259 nfs4_stateid_copy(&state
->open_stateid
, stateid
);
1262 static void nfs_clear_open_stateid(struct nfs4_state
*state
, nfs4_stateid
*stateid
, fmode_t fmode
)
1264 write_seqlock(&state
->seqlock
);
1265 nfs_clear_open_stateid_locked(state
, stateid
, fmode
);
1266 write_sequnlock(&state
->seqlock
);
1267 if (test_bit(NFS_STATE_RECLAIM_NOGRACE
, &state
->flags
))
1268 nfs4_schedule_state_manager(state
->owner
->so_server
->nfs_client
);
1271 static void nfs_set_open_stateid_locked(struct nfs4_state
*state
, nfs4_stateid
*stateid
, fmode_t fmode
)
1275 set_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1278 set_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1280 case FMODE_READ
|FMODE_WRITE
:
1281 set_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1283 if (!nfs_need_update_open_stateid(state
, stateid
))
1285 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0)
1286 nfs4_stateid_copy(&state
->stateid
, stateid
);
1287 nfs4_stateid_copy(&state
->open_stateid
, stateid
);
1290 static void __update_open_stateid(struct nfs4_state
*state
, nfs4_stateid
*open_stateid
, const nfs4_stateid
*deleg_stateid
, fmode_t fmode
)
1293 * Protect the call to nfs4_state_set_mode_locked and
1294 * serialise the stateid update
1296 write_seqlock(&state
->seqlock
);
1297 if (deleg_stateid
!= NULL
) {
1298 nfs4_stateid_copy(&state
->stateid
, deleg_stateid
);
1299 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1301 if (open_stateid
!= NULL
)
1302 nfs_set_open_stateid_locked(state
, open_stateid
, fmode
);
1303 write_sequnlock(&state
->seqlock
);
1304 spin_lock(&state
->owner
->so_lock
);
1305 update_open_stateflags(state
, fmode
);
1306 spin_unlock(&state
->owner
->so_lock
);
1309 static int update_open_stateid(struct nfs4_state
*state
, nfs4_stateid
*open_stateid
, nfs4_stateid
*delegation
, fmode_t fmode
)
1311 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
1312 struct nfs_delegation
*deleg_cur
;
1315 fmode
&= (FMODE_READ
|FMODE_WRITE
);
1318 deleg_cur
= rcu_dereference(nfsi
->delegation
);
1319 if (deleg_cur
== NULL
)
1322 spin_lock(&deleg_cur
->lock
);
1323 if (rcu_dereference(nfsi
->delegation
) != deleg_cur
||
1324 test_bit(NFS_DELEGATION_RETURNING
, &deleg_cur
->flags
) ||
1325 (deleg_cur
->type
& fmode
) != fmode
)
1326 goto no_delegation_unlock
;
1328 if (delegation
== NULL
)
1329 delegation
= &deleg_cur
->stateid
;
1330 else if (!nfs4_stateid_match(&deleg_cur
->stateid
, delegation
))
1331 goto no_delegation_unlock
;
1333 nfs_mark_delegation_referenced(deleg_cur
);
1334 __update_open_stateid(state
, open_stateid
, &deleg_cur
->stateid
, fmode
);
1336 no_delegation_unlock
:
1337 spin_unlock(&deleg_cur
->lock
);
1341 if (!ret
&& open_stateid
!= NULL
) {
1342 __update_open_stateid(state
, open_stateid
, NULL
, fmode
);
1345 if (test_bit(NFS_STATE_RECLAIM_NOGRACE
, &state
->flags
))
1346 nfs4_schedule_state_manager(state
->owner
->so_server
->nfs_client
);
1351 static bool nfs4_update_lock_stateid(struct nfs4_lock_state
*lsp
,
1352 const nfs4_stateid
*stateid
)
1354 struct nfs4_state
*state
= lsp
->ls_state
;
1357 spin_lock(&state
->state_lock
);
1358 if (!nfs4_stateid_match_other(stateid
, &lsp
->ls_stateid
))
1360 if (!nfs4_stateid_is_newer(stateid
, &lsp
->ls_stateid
))
1362 nfs4_stateid_copy(&lsp
->ls_stateid
, stateid
);
1365 spin_unlock(&state
->state_lock
);
1369 static void nfs4_return_incompatible_delegation(struct inode
*inode
, fmode_t fmode
)
1371 struct nfs_delegation
*delegation
;
1374 delegation
= rcu_dereference(NFS_I(inode
)->delegation
);
1375 if (delegation
== NULL
|| (delegation
->type
& fmode
) == fmode
) {
1380 nfs4_inode_return_delegation(inode
);
1383 static struct nfs4_state
*nfs4_try_open_cached(struct nfs4_opendata
*opendata
)
1385 struct nfs4_state
*state
= opendata
->state
;
1386 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
1387 struct nfs_delegation
*delegation
;
1388 int open_mode
= opendata
->o_arg
.open_flags
;
1389 fmode_t fmode
= opendata
->o_arg
.fmode
;
1390 enum open_claim_type4 claim
= opendata
->o_arg
.claim
;
1391 nfs4_stateid stateid
;
1395 spin_lock(&state
->owner
->so_lock
);
1396 if (can_open_cached(state
, fmode
, open_mode
)) {
1397 update_open_stateflags(state
, fmode
);
1398 spin_unlock(&state
->owner
->so_lock
);
1399 goto out_return_state
;
1401 spin_unlock(&state
->owner
->so_lock
);
1403 delegation
= rcu_dereference(nfsi
->delegation
);
1404 if (!can_open_delegated(delegation
, fmode
, claim
)) {
1408 /* Save the delegation */
1409 nfs4_stateid_copy(&stateid
, &delegation
->stateid
);
1411 nfs_release_seqid(opendata
->o_arg
.seqid
);
1412 if (!opendata
->is_recover
) {
1413 ret
= nfs_may_open(state
->inode
, state
->owner
->so_cred
, open_mode
);
1419 /* Try to update the stateid using the delegation */
1420 if (update_open_stateid(state
, NULL
, &stateid
, fmode
))
1421 goto out_return_state
;
1424 return ERR_PTR(ret
);
1426 atomic_inc(&state
->count
);
1431 nfs4_opendata_check_deleg(struct nfs4_opendata
*data
, struct nfs4_state
*state
)
1433 struct nfs_client
*clp
= NFS_SERVER(state
->inode
)->nfs_client
;
1434 struct nfs_delegation
*delegation
;
1435 int delegation_flags
= 0;
1438 delegation
= rcu_dereference(NFS_I(state
->inode
)->delegation
);
1440 delegation_flags
= delegation
->flags
;
1442 if (data
->o_arg
.claim
== NFS4_OPEN_CLAIM_DELEGATE_CUR
) {
1443 pr_err_ratelimited("NFS: Broken NFSv4 server %s is "
1444 "returning a delegation for "
1445 "OPEN(CLAIM_DELEGATE_CUR)\n",
1447 } else if ((delegation_flags
& 1UL<<NFS_DELEGATION_NEED_RECLAIM
) == 0)
1448 nfs_inode_set_delegation(state
->inode
,
1449 data
->owner
->so_cred
,
1452 nfs_inode_reclaim_delegation(state
->inode
,
1453 data
->owner
->so_cred
,
1458 * Check the inode attributes against the CLAIM_PREVIOUS returned attributes
1459 * and update the nfs4_state.
1461 static struct nfs4_state
*
1462 _nfs4_opendata_reclaim_to_nfs4_state(struct nfs4_opendata
*data
)
1464 struct inode
*inode
= data
->state
->inode
;
1465 struct nfs4_state
*state
= data
->state
;
1468 if (!data
->rpc_done
) {
1469 if (data
->rpc_status
) {
1470 ret
= data
->rpc_status
;
1473 /* cached opens have already been processed */
1477 ret
= nfs_refresh_inode(inode
, &data
->f_attr
);
1481 if (data
->o_res
.delegation_type
!= 0)
1482 nfs4_opendata_check_deleg(data
, state
);
1484 update_open_stateid(state
, &data
->o_res
.stateid
, NULL
,
1486 atomic_inc(&state
->count
);
1490 return ERR_PTR(ret
);
1494 static struct nfs4_state
*
1495 _nfs4_opendata_to_nfs4_state(struct nfs4_opendata
*data
)
1497 struct inode
*inode
;
1498 struct nfs4_state
*state
= NULL
;
1501 if (!data
->rpc_done
) {
1502 state
= nfs4_try_open_cached(data
);
1507 if (!(data
->f_attr
.valid
& NFS_ATTR_FATTR
))
1509 inode
= nfs_fhget(data
->dir
->d_sb
, &data
->o_res
.fh
, &data
->f_attr
, data
->f_label
);
1510 ret
= PTR_ERR(inode
);
1514 state
= nfs4_get_open_state(inode
, data
->owner
);
1517 if (data
->o_res
.delegation_type
!= 0)
1518 nfs4_opendata_check_deleg(data
, state
);
1519 update_open_stateid(state
, &data
->o_res
.stateid
, NULL
,
1523 nfs_release_seqid(data
->o_arg
.seqid
);
1528 return ERR_PTR(ret
);
1531 static struct nfs4_state
*
1532 nfs4_opendata_to_nfs4_state(struct nfs4_opendata
*data
)
1534 if (data
->o_arg
.claim
== NFS4_OPEN_CLAIM_PREVIOUS
)
1535 return _nfs4_opendata_reclaim_to_nfs4_state(data
);
1536 return _nfs4_opendata_to_nfs4_state(data
);
1539 static struct nfs_open_context
*nfs4_state_find_open_context(struct nfs4_state
*state
)
1541 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
1542 struct nfs_open_context
*ctx
;
1544 spin_lock(&state
->inode
->i_lock
);
1545 list_for_each_entry(ctx
, &nfsi
->open_files
, list
) {
1546 if (ctx
->state
!= state
)
1548 get_nfs_open_context(ctx
);
1549 spin_unlock(&state
->inode
->i_lock
);
1552 spin_unlock(&state
->inode
->i_lock
);
1553 return ERR_PTR(-ENOENT
);
1556 static struct nfs4_opendata
*nfs4_open_recoverdata_alloc(struct nfs_open_context
*ctx
,
1557 struct nfs4_state
*state
, enum open_claim_type4 claim
)
1559 struct nfs4_opendata
*opendata
;
1561 opendata
= nfs4_opendata_alloc(ctx
->dentry
, state
->owner
, 0, 0,
1562 NULL
, NULL
, claim
, GFP_NOFS
);
1563 if (opendata
== NULL
)
1564 return ERR_PTR(-ENOMEM
);
1565 opendata
->state
= state
;
1566 atomic_inc(&state
->count
);
1570 static int nfs4_open_recover_helper(struct nfs4_opendata
*opendata
, fmode_t fmode
, struct nfs4_state
**res
)
1572 struct nfs4_state
*newstate
;
1575 if ((opendata
->o_arg
.claim
== NFS4_OPEN_CLAIM_DELEGATE_CUR
||
1576 opendata
->o_arg
.claim
== NFS4_OPEN_CLAIM_DELEG_CUR_FH
) &&
1577 (opendata
->o_arg
.u
.delegation_type
& fmode
) != fmode
)
1578 /* This mode can't have been delegated, so we must have
1579 * a valid open_stateid to cover it - not need to reclaim.
1582 opendata
->o_arg
.open_flags
= 0;
1583 opendata
->o_arg
.fmode
= fmode
;
1584 opendata
->o_arg
.share_access
= nfs4_map_atomic_open_share(
1585 NFS_SB(opendata
->dentry
->d_sb
),
1587 memset(&opendata
->o_res
, 0, sizeof(opendata
->o_res
));
1588 memset(&opendata
->c_res
, 0, sizeof(opendata
->c_res
));
1589 nfs4_init_opendata_res(opendata
);
1590 ret
= _nfs4_recover_proc_open(opendata
);
1593 newstate
= nfs4_opendata_to_nfs4_state(opendata
);
1594 if (IS_ERR(newstate
))
1595 return PTR_ERR(newstate
);
1596 nfs4_close_state(newstate
, fmode
);
1601 static int nfs4_open_recover(struct nfs4_opendata
*opendata
, struct nfs4_state
*state
)
1603 struct nfs4_state
*newstate
;
1606 /* Don't trigger recovery in nfs_test_and_clear_all_open_stateid */
1607 clear_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1608 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1609 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1610 /* memory barrier prior to reading state->n_* */
1611 clear_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1612 clear_bit(NFS_OPEN_STATE
, &state
->flags
);
1614 if (state
->n_rdwr
!= 0) {
1615 ret
= nfs4_open_recover_helper(opendata
, FMODE_READ
|FMODE_WRITE
, &newstate
);
1618 if (newstate
!= state
)
1621 if (state
->n_wronly
!= 0) {
1622 ret
= nfs4_open_recover_helper(opendata
, FMODE_WRITE
, &newstate
);
1625 if (newstate
!= state
)
1628 if (state
->n_rdonly
!= 0) {
1629 ret
= nfs4_open_recover_helper(opendata
, FMODE_READ
, &newstate
);
1632 if (newstate
!= state
)
1636 * We may have performed cached opens for all three recoveries.
1637 * Check if we need to update the current stateid.
1639 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0 &&
1640 !nfs4_stateid_match(&state
->stateid
, &state
->open_stateid
)) {
1641 write_seqlock(&state
->seqlock
);
1642 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0)
1643 nfs4_stateid_copy(&state
->stateid
, &state
->open_stateid
);
1644 write_sequnlock(&state
->seqlock
);
1651 * reclaim state on the server after a reboot.
1653 static int _nfs4_do_open_reclaim(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1655 struct nfs_delegation
*delegation
;
1656 struct nfs4_opendata
*opendata
;
1657 fmode_t delegation_type
= 0;
1660 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
,
1661 NFS4_OPEN_CLAIM_PREVIOUS
);
1662 if (IS_ERR(opendata
))
1663 return PTR_ERR(opendata
);
1665 delegation
= rcu_dereference(NFS_I(state
->inode
)->delegation
);
1666 if (delegation
!= NULL
&& test_bit(NFS_DELEGATION_NEED_RECLAIM
, &delegation
->flags
) != 0)
1667 delegation_type
= delegation
->type
;
1669 opendata
->o_arg
.u
.delegation_type
= delegation_type
;
1670 status
= nfs4_open_recover(opendata
, state
);
1671 nfs4_opendata_put(opendata
);
1675 static int nfs4_do_open_reclaim(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1677 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1678 struct nfs4_exception exception
= { };
1681 err
= _nfs4_do_open_reclaim(ctx
, state
);
1682 trace_nfs4_open_reclaim(ctx
, 0, err
);
1683 if (nfs4_clear_cap_atomic_open_v1(server
, err
, &exception
))
1685 if (err
!= -NFS4ERR_DELAY
)
1687 nfs4_handle_exception(server
, err
, &exception
);
1688 } while (exception
.retry
);
1692 static int nfs4_open_reclaim(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
1694 struct nfs_open_context
*ctx
;
1697 ctx
= nfs4_state_find_open_context(state
);
1700 ret
= nfs4_do_open_reclaim(ctx
, state
);
1701 put_nfs_open_context(ctx
);
1705 static int nfs4_handle_delegation_recall_error(struct nfs_server
*server
, struct nfs4_state
*state
, const nfs4_stateid
*stateid
, int err
)
1709 printk(KERN_ERR
"NFS: %s: unhandled error "
1710 "%d.\n", __func__
, err
);
1716 case -NFS4ERR_BADSESSION
:
1717 case -NFS4ERR_BADSLOT
:
1718 case -NFS4ERR_BAD_HIGH_SLOT
:
1719 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
1720 case -NFS4ERR_DEADSESSION
:
1721 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1722 nfs4_schedule_session_recovery(server
->nfs_client
->cl_session
, err
);
1724 case -NFS4ERR_STALE_CLIENTID
:
1725 case -NFS4ERR_STALE_STATEID
:
1726 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1727 case -NFS4ERR_EXPIRED
:
1728 /* Don't recall a delegation if it was lost */
1729 nfs4_schedule_lease_recovery(server
->nfs_client
);
1731 case -NFS4ERR_MOVED
:
1732 nfs4_schedule_migration_recovery(server
);
1734 case -NFS4ERR_LEASE_MOVED
:
1735 nfs4_schedule_lease_moved_recovery(server
->nfs_client
);
1737 case -NFS4ERR_DELEG_REVOKED
:
1738 case -NFS4ERR_ADMIN_REVOKED
:
1739 case -NFS4ERR_BAD_STATEID
:
1740 case -NFS4ERR_OPENMODE
:
1741 nfs_inode_find_state_and_recover(state
->inode
,
1743 nfs4_schedule_stateid_recovery(server
, state
);
1745 case -NFS4ERR_DELAY
:
1746 case -NFS4ERR_GRACE
:
1747 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1751 case -NFS4ERR_DENIED
:
1752 /* kill_proc(fl->fl_pid, SIGLOST, 1); */
1758 int nfs4_open_delegation_recall(struct nfs_open_context
*ctx
, struct nfs4_state
*state
, const nfs4_stateid
*stateid
)
1760 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1761 struct nfs4_opendata
*opendata
;
1764 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
,
1765 NFS4_OPEN_CLAIM_DELEG_CUR_FH
);
1766 if (IS_ERR(opendata
))
1767 return PTR_ERR(opendata
);
1768 nfs4_stateid_copy(&opendata
->o_arg
.u
.delegation
, stateid
);
1769 err
= nfs4_open_recover(opendata
, state
);
1770 nfs4_opendata_put(opendata
);
1771 return nfs4_handle_delegation_recall_error(server
, state
, stateid
, err
);
1774 static void nfs4_open_confirm_prepare(struct rpc_task
*task
, void *calldata
)
1776 struct nfs4_opendata
*data
= calldata
;
1778 nfs40_setup_sequence(data
->o_arg
.server
->nfs_client
->cl_slot_tbl
,
1779 &data
->c_arg
.seq_args
, &data
->c_res
.seq_res
, task
);
1782 static void nfs4_open_confirm_done(struct rpc_task
*task
, void *calldata
)
1784 struct nfs4_opendata
*data
= calldata
;
1786 nfs40_sequence_done(task
, &data
->c_res
.seq_res
);
1788 data
->rpc_status
= task
->tk_status
;
1789 if (data
->rpc_status
== 0) {
1790 nfs4_stateid_copy(&data
->o_res
.stateid
, &data
->c_res
.stateid
);
1791 nfs_confirm_seqid(&data
->owner
->so_seqid
, 0);
1792 renew_lease(data
->o_res
.server
, data
->timestamp
);
1797 static void nfs4_open_confirm_release(void *calldata
)
1799 struct nfs4_opendata
*data
= calldata
;
1800 struct nfs4_state
*state
= NULL
;
1802 /* If this request hasn't been cancelled, do nothing */
1803 if (data
->cancelled
== 0)
1805 /* In case of error, no cleanup! */
1806 if (!data
->rpc_done
)
1808 state
= nfs4_opendata_to_nfs4_state(data
);
1810 nfs4_close_state(state
, data
->o_arg
.fmode
);
1812 nfs4_opendata_put(data
);
1815 static const struct rpc_call_ops nfs4_open_confirm_ops
= {
1816 .rpc_call_prepare
= nfs4_open_confirm_prepare
,
1817 .rpc_call_done
= nfs4_open_confirm_done
,
1818 .rpc_release
= nfs4_open_confirm_release
,
1822 * Note: On error, nfs4_proc_open_confirm will free the struct nfs4_opendata
1824 static int _nfs4_proc_open_confirm(struct nfs4_opendata
*data
)
1826 struct nfs_server
*server
= NFS_SERVER(d_inode(data
->dir
));
1827 struct rpc_task
*task
;
1828 struct rpc_message msg
= {
1829 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_CONFIRM
],
1830 .rpc_argp
= &data
->c_arg
,
1831 .rpc_resp
= &data
->c_res
,
1832 .rpc_cred
= data
->owner
->so_cred
,
1834 struct rpc_task_setup task_setup_data
= {
1835 .rpc_client
= server
->client
,
1836 .rpc_message
= &msg
,
1837 .callback_ops
= &nfs4_open_confirm_ops
,
1838 .callback_data
= data
,
1839 .workqueue
= nfsiod_workqueue
,
1840 .flags
= RPC_TASK_ASYNC
,
1844 nfs4_init_sequence(&data
->c_arg
.seq_args
, &data
->c_res
.seq_res
, 1);
1845 kref_get(&data
->kref
);
1847 data
->rpc_status
= 0;
1848 data
->timestamp
= jiffies
;
1849 task
= rpc_run_task(&task_setup_data
);
1851 return PTR_ERR(task
);
1852 status
= nfs4_wait_for_completion_rpc_task(task
);
1854 data
->cancelled
= 1;
1857 status
= data
->rpc_status
;
1862 static void nfs4_open_prepare(struct rpc_task
*task
, void *calldata
)
1864 struct nfs4_opendata
*data
= calldata
;
1865 struct nfs4_state_owner
*sp
= data
->owner
;
1866 struct nfs_client
*clp
= sp
->so_server
->nfs_client
;
1867 enum open_claim_type4 claim
= data
->o_arg
.claim
;
1869 if (nfs_wait_on_sequence(data
->o_arg
.seqid
, task
) != 0)
1872 * Check if we still need to send an OPEN call, or if we can use
1873 * a delegation instead.
1875 if (data
->state
!= NULL
) {
1876 struct nfs_delegation
*delegation
;
1878 if (can_open_cached(data
->state
, data
->o_arg
.fmode
, data
->o_arg
.open_flags
))
1881 delegation
= rcu_dereference(NFS_I(data
->state
->inode
)->delegation
);
1882 if (can_open_delegated(delegation
, data
->o_arg
.fmode
, claim
))
1883 goto unlock_no_action
;
1886 /* Update client id. */
1887 data
->o_arg
.clientid
= clp
->cl_clientid
;
1891 case NFS4_OPEN_CLAIM_PREVIOUS
:
1892 case NFS4_OPEN_CLAIM_DELEG_CUR_FH
:
1893 case NFS4_OPEN_CLAIM_DELEG_PREV_FH
:
1894 data
->o_arg
.open_bitmap
= &nfs4_open_noattr_bitmap
[0];
1895 case NFS4_OPEN_CLAIM_FH
:
1896 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_NOATTR
];
1897 nfs_copy_fh(&data
->o_res
.fh
, data
->o_arg
.fh
);
1899 data
->timestamp
= jiffies
;
1900 if (nfs4_setup_sequence(data
->o_arg
.server
,
1901 &data
->o_arg
.seq_args
,
1902 &data
->o_res
.seq_res
,
1904 nfs_release_seqid(data
->o_arg
.seqid
);
1906 /* Set the create mode (note dependency on the session type) */
1907 data
->o_arg
.createmode
= NFS4_CREATE_UNCHECKED
;
1908 if (data
->o_arg
.open_flags
& O_EXCL
) {
1909 data
->o_arg
.createmode
= NFS4_CREATE_EXCLUSIVE
;
1910 if (nfs4_has_persistent_session(clp
))
1911 data
->o_arg
.createmode
= NFS4_CREATE_GUARDED
;
1912 else if (clp
->cl_mvops
->minor_version
> 0)
1913 data
->o_arg
.createmode
= NFS4_CREATE_EXCLUSIVE4_1
;
1919 task
->tk_action
= NULL
;
1921 nfs4_sequence_done(task
, &data
->o_res
.seq_res
);
1924 static void nfs4_open_done(struct rpc_task
*task
, void *calldata
)
1926 struct nfs4_opendata
*data
= calldata
;
1928 data
->rpc_status
= task
->tk_status
;
1930 if (!nfs4_sequence_done(task
, &data
->o_res
.seq_res
))
1933 if (task
->tk_status
== 0) {
1934 if (data
->o_res
.f_attr
->valid
& NFS_ATTR_FATTR_TYPE
) {
1935 switch (data
->o_res
.f_attr
->mode
& S_IFMT
) {
1939 data
->rpc_status
= -ELOOP
;
1942 data
->rpc_status
= -EISDIR
;
1945 data
->rpc_status
= -ENOTDIR
;
1948 renew_lease(data
->o_res
.server
, data
->timestamp
);
1949 if (!(data
->o_res
.rflags
& NFS4_OPEN_RESULT_CONFIRM
))
1950 nfs_confirm_seqid(&data
->owner
->so_seqid
, 0);
1955 static void nfs4_open_release(void *calldata
)
1957 struct nfs4_opendata
*data
= calldata
;
1958 struct nfs4_state
*state
= NULL
;
1960 /* If this request hasn't been cancelled, do nothing */
1961 if (data
->cancelled
== 0)
1963 /* In case of error, no cleanup! */
1964 if (data
->rpc_status
!= 0 || !data
->rpc_done
)
1966 /* In case we need an open_confirm, no cleanup! */
1967 if (data
->o_res
.rflags
& NFS4_OPEN_RESULT_CONFIRM
)
1969 state
= nfs4_opendata_to_nfs4_state(data
);
1971 nfs4_close_state(state
, data
->o_arg
.fmode
);
1973 nfs4_opendata_put(data
);
1976 static const struct rpc_call_ops nfs4_open_ops
= {
1977 .rpc_call_prepare
= nfs4_open_prepare
,
1978 .rpc_call_done
= nfs4_open_done
,
1979 .rpc_release
= nfs4_open_release
,
1982 static int nfs4_run_open_task(struct nfs4_opendata
*data
, int isrecover
)
1984 struct inode
*dir
= d_inode(data
->dir
);
1985 struct nfs_server
*server
= NFS_SERVER(dir
);
1986 struct nfs_openargs
*o_arg
= &data
->o_arg
;
1987 struct nfs_openres
*o_res
= &data
->o_res
;
1988 struct rpc_task
*task
;
1989 struct rpc_message msg
= {
1990 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN
],
1993 .rpc_cred
= data
->owner
->so_cred
,
1995 struct rpc_task_setup task_setup_data
= {
1996 .rpc_client
= server
->client
,
1997 .rpc_message
= &msg
,
1998 .callback_ops
= &nfs4_open_ops
,
1999 .callback_data
= data
,
2000 .workqueue
= nfsiod_workqueue
,
2001 .flags
= RPC_TASK_ASYNC
,
2005 nfs4_init_sequence(&o_arg
->seq_args
, &o_res
->seq_res
, 1);
2006 kref_get(&data
->kref
);
2008 data
->rpc_status
= 0;
2009 data
->cancelled
= 0;
2010 data
->is_recover
= 0;
2012 nfs4_set_sequence_privileged(&o_arg
->seq_args
);
2013 data
->is_recover
= 1;
2015 task
= rpc_run_task(&task_setup_data
);
2017 return PTR_ERR(task
);
2018 status
= nfs4_wait_for_completion_rpc_task(task
);
2020 data
->cancelled
= 1;
2023 status
= data
->rpc_status
;
2029 static int _nfs4_recover_proc_open(struct nfs4_opendata
*data
)
2031 struct inode
*dir
= d_inode(data
->dir
);
2032 struct nfs_openres
*o_res
= &data
->o_res
;
2035 status
= nfs4_run_open_task(data
, 1);
2036 if (status
!= 0 || !data
->rpc_done
)
2039 nfs_fattr_map_and_free_names(NFS_SERVER(dir
), &data
->f_attr
);
2041 if (o_res
->rflags
& NFS4_OPEN_RESULT_CONFIRM
) {
2042 status
= _nfs4_proc_open_confirm(data
);
2051 * Additional permission checks in order to distinguish between an
2052 * open for read, and an open for execute. This works around the
2053 * fact that NFSv4 OPEN treats read and execute permissions as being
2055 * Note that in the non-execute case, we want to turn off permission
2056 * checking if we just created a new file (POSIX open() semantics).
2058 static int nfs4_opendata_access(struct rpc_cred
*cred
,
2059 struct nfs4_opendata
*opendata
,
2060 struct nfs4_state
*state
, fmode_t fmode
,
2063 struct nfs_access_entry cache
;
2066 /* access call failed or for some reason the server doesn't
2067 * support any access modes -- defer access call until later */
2068 if (opendata
->o_res
.access_supported
== 0)
2073 * Use openflags to check for exec, because fmode won't
2074 * always have FMODE_EXEC set when file open for exec.
2076 if (openflags
& __FMODE_EXEC
) {
2077 /* ONLY check for exec rights */
2079 } else if ((fmode
& FMODE_READ
) && !opendata
->file_created
)
2083 cache
.jiffies
= jiffies
;
2084 nfs_access_set_mask(&cache
, opendata
->o_res
.access_result
);
2085 nfs_access_add_cache(state
->inode
, &cache
);
2087 if ((mask
& ~cache
.mask
& (MAY_READ
| MAY_EXEC
)) == 0)
2090 /* even though OPEN succeeded, access is denied. Close the file */
2091 nfs4_close_state(state
, fmode
);
2096 * Note: On error, nfs4_proc_open will free the struct nfs4_opendata
2098 static int _nfs4_proc_open(struct nfs4_opendata
*data
)
2100 struct inode
*dir
= d_inode(data
->dir
);
2101 struct nfs_server
*server
= NFS_SERVER(dir
);
2102 struct nfs_openargs
*o_arg
= &data
->o_arg
;
2103 struct nfs_openres
*o_res
= &data
->o_res
;
2106 status
= nfs4_run_open_task(data
, 0);
2107 if (!data
->rpc_done
)
2110 if (status
== -NFS4ERR_BADNAME
&&
2111 !(o_arg
->open_flags
& O_CREAT
))
2116 nfs_fattr_map_and_free_names(server
, &data
->f_attr
);
2118 if (o_arg
->open_flags
& O_CREAT
) {
2119 update_changeattr(dir
, &o_res
->cinfo
);
2120 if (o_arg
->open_flags
& O_EXCL
)
2121 data
->file_created
= 1;
2122 else if (o_res
->cinfo
.before
!= o_res
->cinfo
.after
)
2123 data
->file_created
= 1;
2125 if ((o_res
->rflags
& NFS4_OPEN_RESULT_LOCKTYPE_POSIX
) == 0)
2126 server
->caps
&= ~NFS_CAP_POSIX_LOCK
;
2127 if(o_res
->rflags
& NFS4_OPEN_RESULT_CONFIRM
) {
2128 status
= _nfs4_proc_open_confirm(data
);
2132 if (!(o_res
->f_attr
->valid
& NFS_ATTR_FATTR
))
2133 nfs4_proc_getattr(server
, &o_res
->fh
, o_res
->f_attr
, o_res
->f_label
);
2137 static int nfs4_recover_expired_lease(struct nfs_server
*server
)
2139 return nfs4_client_recover_expired_lease(server
->nfs_client
);
2144 * reclaim state on the server after a network partition.
2145 * Assumes caller holds the appropriate lock
2147 static int _nfs4_open_expired(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
2149 struct nfs4_opendata
*opendata
;
2152 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
,
2153 NFS4_OPEN_CLAIM_FH
);
2154 if (IS_ERR(opendata
))
2155 return PTR_ERR(opendata
);
2156 ret
= nfs4_open_recover(opendata
, state
);
2158 d_drop(ctx
->dentry
);
2159 nfs4_opendata_put(opendata
);
2163 static int nfs4_do_open_expired(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
2165 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
2166 struct nfs4_exception exception
= { };
2170 err
= _nfs4_open_expired(ctx
, state
);
2171 trace_nfs4_open_expired(ctx
, 0, err
);
2172 if (nfs4_clear_cap_atomic_open_v1(server
, err
, &exception
))
2177 case -NFS4ERR_GRACE
:
2178 case -NFS4ERR_DELAY
:
2179 nfs4_handle_exception(server
, err
, &exception
);
2182 } while (exception
.retry
);
2187 static int nfs4_open_expired(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
2189 struct nfs_open_context
*ctx
;
2192 ctx
= nfs4_state_find_open_context(state
);
2195 ret
= nfs4_do_open_expired(ctx
, state
);
2196 put_nfs_open_context(ctx
);
2200 static void nfs_finish_clear_delegation_stateid(struct nfs4_state
*state
)
2202 nfs_remove_bad_delegation(state
->inode
);
2203 write_seqlock(&state
->seqlock
);
2204 nfs4_stateid_copy(&state
->stateid
, &state
->open_stateid
);
2205 write_sequnlock(&state
->seqlock
);
2206 clear_bit(NFS_DELEGATED_STATE
, &state
->flags
);
2209 static void nfs40_clear_delegation_stateid(struct nfs4_state
*state
)
2211 if (rcu_access_pointer(NFS_I(state
->inode
)->delegation
) != NULL
)
2212 nfs_finish_clear_delegation_stateid(state
);
2215 static int nfs40_open_expired(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
2217 /* NFSv4.0 doesn't allow for delegation recovery on open expire */
2218 nfs40_clear_delegation_stateid(state
);
2219 return nfs4_open_expired(sp
, state
);
2222 #if defined(CONFIG_NFS_V4_1)
2223 static void nfs41_check_delegation_stateid(struct nfs4_state
*state
)
2225 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
2226 nfs4_stateid stateid
;
2227 struct nfs_delegation
*delegation
;
2228 struct rpc_cred
*cred
;
2231 /* Get the delegation credential for use by test/free_stateid */
2233 delegation
= rcu_dereference(NFS_I(state
->inode
)->delegation
);
2234 if (delegation
== NULL
) {
2239 nfs4_stateid_copy(&stateid
, &delegation
->stateid
);
2240 cred
= get_rpccred(delegation
->cred
);
2242 status
= nfs41_test_stateid(server
, &stateid
, cred
);
2243 trace_nfs4_test_delegation_stateid(state
, NULL
, status
);
2245 if (status
!= NFS_OK
) {
2246 /* Free the stateid unless the server explicitly
2247 * informs us the stateid is unrecognized. */
2248 if (status
!= -NFS4ERR_BAD_STATEID
)
2249 nfs41_free_stateid(server
, &stateid
, cred
);
2250 nfs_finish_clear_delegation_stateid(state
);
2257 * nfs41_check_open_stateid - possibly free an open stateid
2259 * @state: NFSv4 state for an inode
2261 * Returns NFS_OK if recovery for this stateid is now finished.
2262 * Otherwise a negative NFS4ERR value is returned.
2264 static int nfs41_check_open_stateid(struct nfs4_state
*state
)
2266 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
2267 nfs4_stateid
*stateid
= &state
->open_stateid
;
2268 struct rpc_cred
*cred
= state
->owner
->so_cred
;
2271 /* If a state reset has been done, test_stateid is unneeded */
2272 if ((test_bit(NFS_O_RDONLY_STATE
, &state
->flags
) == 0) &&
2273 (test_bit(NFS_O_WRONLY_STATE
, &state
->flags
) == 0) &&
2274 (test_bit(NFS_O_RDWR_STATE
, &state
->flags
) == 0))
2275 return -NFS4ERR_BAD_STATEID
;
2277 status
= nfs41_test_stateid(server
, stateid
, cred
);
2278 trace_nfs4_test_open_stateid(state
, NULL
, status
);
2279 if (status
!= NFS_OK
) {
2280 /* Free the stateid unless the server explicitly
2281 * informs us the stateid is unrecognized. */
2282 if (status
!= -NFS4ERR_BAD_STATEID
)
2283 nfs41_free_stateid(server
, stateid
, cred
);
2285 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
2286 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
2287 clear_bit(NFS_O_RDWR_STATE
, &state
->flags
);
2288 clear_bit(NFS_OPEN_STATE
, &state
->flags
);
2293 static int nfs41_open_expired(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
2297 nfs41_check_delegation_stateid(state
);
2298 status
= nfs41_check_open_stateid(state
);
2299 if (status
!= NFS_OK
)
2300 status
= nfs4_open_expired(sp
, state
);
2306 * on an EXCLUSIVE create, the server should send back a bitmask with FATTR4-*
2307 * fields corresponding to attributes that were used to store the verifier.
2308 * Make sure we clobber those fields in the later setattr call
2310 static inline void nfs4_exclusive_attrset(struct nfs4_opendata
*opendata
, struct iattr
*sattr
)
2312 if ((opendata
->o_res
.attrset
[1] & FATTR4_WORD1_TIME_ACCESS
) &&
2313 !(sattr
->ia_valid
& ATTR_ATIME_SET
))
2314 sattr
->ia_valid
|= ATTR_ATIME
;
2316 if ((opendata
->o_res
.attrset
[1] & FATTR4_WORD1_TIME_MODIFY
) &&
2317 !(sattr
->ia_valid
& ATTR_MTIME_SET
))
2318 sattr
->ia_valid
|= ATTR_MTIME
;
2321 static int _nfs4_open_and_get_state(struct nfs4_opendata
*opendata
,
2324 struct nfs_open_context
*ctx
)
2326 struct nfs4_state_owner
*sp
= opendata
->owner
;
2327 struct nfs_server
*server
= sp
->so_server
;
2328 struct dentry
*dentry
;
2329 struct nfs4_state
*state
;
2333 seq
= raw_seqcount_begin(&sp
->so_reclaim_seqcount
);
2335 ret
= _nfs4_proc_open(opendata
);
2339 state
= nfs4_opendata_to_nfs4_state(opendata
);
2340 ret
= PTR_ERR(state
);
2343 if (server
->caps
& NFS_CAP_POSIX_LOCK
)
2344 set_bit(NFS_STATE_POSIX_LOCKS
, &state
->flags
);
2346 dentry
= opendata
->dentry
;
2347 if (d_really_is_negative(dentry
)) {
2348 /* FIXME: Is this d_drop() ever needed? */
2350 dentry
= d_add_unique(dentry
, igrab(state
->inode
));
2351 if (dentry
== NULL
) {
2352 dentry
= opendata
->dentry
;
2353 } else if (dentry
!= ctx
->dentry
) {
2355 ctx
->dentry
= dget(dentry
);
2357 nfs_set_verifier(dentry
,
2358 nfs_save_change_attribute(d_inode(opendata
->dir
)));
2361 ret
= nfs4_opendata_access(sp
->so_cred
, opendata
, state
, fmode
, flags
);
2366 if (d_inode(dentry
) == state
->inode
) {
2367 nfs_inode_attach_open_context(ctx
);
2368 if (read_seqcount_retry(&sp
->so_reclaim_seqcount
, seq
))
2369 nfs4_schedule_stateid_recovery(server
, state
);
2376 * Returns a referenced nfs4_state
2378 static int _nfs4_do_open(struct inode
*dir
,
2379 struct nfs_open_context
*ctx
,
2381 struct iattr
*sattr
,
2382 struct nfs4_label
*label
,
2385 struct nfs4_state_owner
*sp
;
2386 struct nfs4_state
*state
= NULL
;
2387 struct nfs_server
*server
= NFS_SERVER(dir
);
2388 struct nfs4_opendata
*opendata
;
2389 struct dentry
*dentry
= ctx
->dentry
;
2390 struct rpc_cred
*cred
= ctx
->cred
;
2391 struct nfs4_threshold
**ctx_th
= &ctx
->mdsthreshold
;
2392 fmode_t fmode
= ctx
->mode
& (FMODE_READ
|FMODE_WRITE
|FMODE_EXEC
);
2393 enum open_claim_type4 claim
= NFS4_OPEN_CLAIM_NULL
;
2394 struct nfs4_label
*olabel
= NULL
;
2397 /* Protect against reboot recovery conflicts */
2399 sp
= nfs4_get_state_owner(server
, cred
, GFP_KERNEL
);
2401 dprintk("nfs4_do_open: nfs4_get_state_owner failed!\n");
2404 status
= nfs4_recover_expired_lease(server
);
2406 goto err_put_state_owner
;
2407 if (d_really_is_positive(dentry
))
2408 nfs4_return_incompatible_delegation(d_inode(dentry
), fmode
);
2410 if (d_really_is_positive(dentry
))
2411 claim
= NFS4_OPEN_CLAIM_FH
;
2412 opendata
= nfs4_opendata_alloc(dentry
, sp
, fmode
, flags
, sattr
,
2413 label
, claim
, GFP_KERNEL
);
2414 if (opendata
== NULL
)
2415 goto err_put_state_owner
;
2418 olabel
= nfs4_label_alloc(server
, GFP_KERNEL
);
2419 if (IS_ERR(olabel
)) {
2420 status
= PTR_ERR(olabel
);
2421 goto err_opendata_put
;
2425 if (server
->attr_bitmask
[2] & FATTR4_WORD2_MDSTHRESHOLD
) {
2426 if (!opendata
->f_attr
.mdsthreshold
) {
2427 opendata
->f_attr
.mdsthreshold
= pnfs_mdsthreshold_alloc();
2428 if (!opendata
->f_attr
.mdsthreshold
)
2429 goto err_free_label
;
2431 opendata
->o_arg
.open_bitmap
= &nfs4_pnfs_open_bitmap
[0];
2433 if (d_really_is_positive(dentry
))
2434 opendata
->state
= nfs4_get_open_state(d_inode(dentry
), sp
);
2436 status
= _nfs4_open_and_get_state(opendata
, fmode
, flags
, ctx
);
2438 goto err_free_label
;
2441 if ((opendata
->o_arg
.open_flags
& (O_CREAT
|O_EXCL
)) == (O_CREAT
|O_EXCL
) &&
2442 (opendata
->o_arg
.createmode
!= NFS4_CREATE_GUARDED
)) {
2443 nfs4_exclusive_attrset(opendata
, sattr
);
2445 nfs_fattr_init(opendata
->o_res
.f_attr
);
2446 status
= nfs4_do_setattr(state
->inode
, cred
,
2447 opendata
->o_res
.f_attr
, sattr
,
2448 state
, label
, olabel
);
2450 nfs_setattr_update_inode(state
->inode
, sattr
,
2451 opendata
->o_res
.f_attr
);
2452 nfs_setsecurity(state
->inode
, opendata
->o_res
.f_attr
, olabel
);
2455 if (opened
&& opendata
->file_created
)
2456 *opened
|= FILE_CREATED
;
2458 if (pnfs_use_threshold(ctx_th
, opendata
->f_attr
.mdsthreshold
, server
)) {
2459 *ctx_th
= opendata
->f_attr
.mdsthreshold
;
2460 opendata
->f_attr
.mdsthreshold
= NULL
;
2463 nfs4_label_free(olabel
);
2465 nfs4_opendata_put(opendata
);
2466 nfs4_put_state_owner(sp
);
2469 nfs4_label_free(olabel
);
2471 nfs4_opendata_put(opendata
);
2472 err_put_state_owner
:
2473 nfs4_put_state_owner(sp
);
2479 static struct nfs4_state
*nfs4_do_open(struct inode
*dir
,
2480 struct nfs_open_context
*ctx
,
2482 struct iattr
*sattr
,
2483 struct nfs4_label
*label
,
2486 struct nfs_server
*server
= NFS_SERVER(dir
);
2487 struct nfs4_exception exception
= { };
2488 struct nfs4_state
*res
;
2492 status
= _nfs4_do_open(dir
, ctx
, flags
, sattr
, label
, opened
);
2494 trace_nfs4_open_file(ctx
, flags
, status
);
2497 /* NOTE: BAD_SEQID means the server and client disagree about the
2498 * book-keeping w.r.t. state-changing operations
2499 * (OPEN/CLOSE/LOCK/LOCKU...)
2500 * It is actually a sign of a bug on the client or on the server.
2502 * If we receive a BAD_SEQID error in the particular case of
2503 * doing an OPEN, we assume that nfs_increment_open_seqid() will
2504 * have unhashed the old state_owner for us, and that we can
2505 * therefore safely retry using a new one. We should still warn
2506 * the user though...
2508 if (status
== -NFS4ERR_BAD_SEQID
) {
2509 pr_warn_ratelimited("NFS: v4 server %s "
2510 " returned a bad sequence-id error!\n",
2511 NFS_SERVER(dir
)->nfs_client
->cl_hostname
);
2512 exception
.retry
= 1;
2516 * BAD_STATEID on OPEN means that the server cancelled our
2517 * state before it received the OPEN_CONFIRM.
2518 * Recover by retrying the request as per the discussion
2519 * on Page 181 of RFC3530.
2521 if (status
== -NFS4ERR_BAD_STATEID
) {
2522 exception
.retry
= 1;
2525 if (status
== -EAGAIN
) {
2526 /* We must have found a delegation */
2527 exception
.retry
= 1;
2530 if (nfs4_clear_cap_atomic_open_v1(server
, status
, &exception
))
2532 res
= ERR_PTR(nfs4_handle_exception(server
,
2533 status
, &exception
));
2534 } while (exception
.retry
);
2538 static int _nfs4_do_setattr(struct inode
*inode
, struct rpc_cred
*cred
,
2539 struct nfs_fattr
*fattr
, struct iattr
*sattr
,
2540 struct nfs4_state
*state
, struct nfs4_label
*ilabel
,
2541 struct nfs4_label
*olabel
)
2543 struct nfs_server
*server
= NFS_SERVER(inode
);
2544 struct nfs_setattrargs arg
= {
2545 .fh
= NFS_FH(inode
),
2548 .bitmask
= server
->attr_bitmask
,
2551 struct nfs_setattrres res
= {
2556 struct rpc_message msg
= {
2557 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETATTR
],
2562 unsigned long timestamp
= jiffies
;
2567 arg
.bitmask
= nfs4_bitmask(server
, ilabel
);
2569 arg
.bitmask
= nfs4_bitmask(server
, olabel
);
2571 nfs_fattr_init(fattr
);
2573 /* Servers should only apply open mode checks for file size changes */
2574 truncate
= (sattr
->ia_valid
& ATTR_SIZE
) ? true : false;
2575 fmode
= truncate
? FMODE_WRITE
: FMODE_READ
;
2577 if (nfs4_copy_delegation_stateid(&arg
.stateid
, inode
, fmode
)) {
2578 /* Use that stateid */
2579 } else if (truncate
&& state
!= NULL
) {
2580 struct nfs_lockowner lockowner
= {
2581 .l_owner
= current
->files
,
2582 .l_pid
= current
->tgid
,
2584 if (!nfs4_valid_open_stateid(state
))
2586 if (nfs4_select_rw_stateid(&arg
.stateid
, state
, FMODE_WRITE
,
2587 &lockowner
) == -EIO
)
2590 nfs4_stateid_copy(&arg
.stateid
, &zero_stateid
);
2592 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
2593 if (status
== 0 && state
!= NULL
)
2594 renew_lease(server
, timestamp
);
2598 static int nfs4_do_setattr(struct inode
*inode
, struct rpc_cred
*cred
,
2599 struct nfs_fattr
*fattr
, struct iattr
*sattr
,
2600 struct nfs4_state
*state
, struct nfs4_label
*ilabel
,
2601 struct nfs4_label
*olabel
)
2603 struct nfs_server
*server
= NFS_SERVER(inode
);
2604 struct nfs4_exception exception
= {
2610 err
= _nfs4_do_setattr(inode
, cred
, fattr
, sattr
, state
, ilabel
, olabel
);
2611 trace_nfs4_setattr(inode
, err
);
2613 case -NFS4ERR_OPENMODE
:
2614 if (!(sattr
->ia_valid
& ATTR_SIZE
)) {
2615 pr_warn_once("NFSv4: server %s is incorrectly "
2616 "applying open mode checks to "
2617 "a SETATTR that is not "
2618 "changing file size.\n",
2619 server
->nfs_client
->cl_hostname
);
2621 if (state
&& !(state
->state
& FMODE_WRITE
)) {
2623 if (sattr
->ia_valid
& ATTR_OPEN
)
2628 err
= nfs4_handle_exception(server
, err
, &exception
);
2629 } while (exception
.retry
);
2634 struct nfs4_closedata
{
2635 struct inode
*inode
;
2636 struct nfs4_state
*state
;
2637 struct nfs_closeargs arg
;
2638 struct nfs_closeres res
;
2639 struct nfs_fattr fattr
;
2640 unsigned long timestamp
;
2645 static void nfs4_free_closedata(void *data
)
2647 struct nfs4_closedata
*calldata
= data
;
2648 struct nfs4_state_owner
*sp
= calldata
->state
->owner
;
2649 struct super_block
*sb
= calldata
->state
->inode
->i_sb
;
2652 pnfs_roc_release(calldata
->state
->inode
);
2653 nfs4_put_open_state(calldata
->state
);
2654 nfs_free_seqid(calldata
->arg
.seqid
);
2655 nfs4_put_state_owner(sp
);
2656 nfs_sb_deactive(sb
);
2660 static void nfs4_close_done(struct rpc_task
*task
, void *data
)
2662 struct nfs4_closedata
*calldata
= data
;
2663 struct nfs4_state
*state
= calldata
->state
;
2664 struct nfs_server
*server
= NFS_SERVER(calldata
->inode
);
2665 nfs4_stateid
*res_stateid
= NULL
;
2667 dprintk("%s: begin!\n", __func__
);
2668 if (!nfs4_sequence_done(task
, &calldata
->res
.seq_res
))
2670 trace_nfs4_close(state
, &calldata
->arg
, &calldata
->res
, task
->tk_status
);
2671 /* hmm. we are done with the inode, and in the process of freeing
2672 * the state_owner. we keep this around to process errors
2674 switch (task
->tk_status
) {
2676 res_stateid
= &calldata
->res
.stateid
;
2678 pnfs_roc_set_barrier(state
->inode
,
2679 calldata
->roc_barrier
);
2680 renew_lease(server
, calldata
->timestamp
);
2682 case -NFS4ERR_ADMIN_REVOKED
:
2683 case -NFS4ERR_STALE_STATEID
:
2684 case -NFS4ERR_OLD_STATEID
:
2685 case -NFS4ERR_BAD_STATEID
:
2686 case -NFS4ERR_EXPIRED
:
2687 if (!nfs4_stateid_match(&calldata
->arg
.stateid
,
2688 &state
->open_stateid
)) {
2689 rpc_restart_call_prepare(task
);
2692 if (calldata
->arg
.fmode
== 0)
2695 if (nfs4_async_handle_error(task
, server
, state
, NULL
) == -EAGAIN
) {
2696 rpc_restart_call_prepare(task
);
2700 nfs_clear_open_stateid(state
, res_stateid
, calldata
->arg
.fmode
);
2702 nfs_release_seqid(calldata
->arg
.seqid
);
2703 nfs_refresh_inode(calldata
->inode
, calldata
->res
.fattr
);
2704 dprintk("%s: done, ret = %d!\n", __func__
, task
->tk_status
);
2707 static void nfs4_close_prepare(struct rpc_task
*task
, void *data
)
2709 struct nfs4_closedata
*calldata
= data
;
2710 struct nfs4_state
*state
= calldata
->state
;
2711 struct inode
*inode
= calldata
->inode
;
2712 bool is_rdonly
, is_wronly
, is_rdwr
;
2715 dprintk("%s: begin!\n", __func__
);
2716 if (nfs_wait_on_sequence(calldata
->arg
.seqid
, task
) != 0)
2719 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_DOWNGRADE
];
2720 spin_lock(&state
->owner
->so_lock
);
2721 is_rdwr
= test_bit(NFS_O_RDWR_STATE
, &state
->flags
);
2722 is_rdonly
= test_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
2723 is_wronly
= test_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
2724 nfs4_stateid_copy(&calldata
->arg
.stateid
, &state
->open_stateid
);
2725 /* Calculate the change in open mode */
2726 calldata
->arg
.fmode
= 0;
2727 if (state
->n_rdwr
== 0) {
2728 if (state
->n_rdonly
== 0)
2729 call_close
|= is_rdonly
;
2731 calldata
->arg
.fmode
|= FMODE_READ
;
2732 if (state
->n_wronly
== 0)
2733 call_close
|= is_wronly
;
2735 calldata
->arg
.fmode
|= FMODE_WRITE
;
2737 calldata
->arg
.fmode
|= FMODE_READ
|FMODE_WRITE
;
2739 if (calldata
->arg
.fmode
== 0)
2740 call_close
|= is_rdwr
;
2742 if (!nfs4_valid_open_stateid(state
))
2744 spin_unlock(&state
->owner
->so_lock
);
2747 /* Note: exit _without_ calling nfs4_close_done */
2751 if (calldata
->arg
.fmode
== 0)
2752 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CLOSE
];
2754 pnfs_roc_get_barrier(inode
, &calldata
->roc_barrier
);
2756 calldata
->arg
.share_access
=
2757 nfs4_map_atomic_open_share(NFS_SERVER(inode
),
2758 calldata
->arg
.fmode
, 0);
2760 nfs_fattr_init(calldata
->res
.fattr
);
2761 calldata
->timestamp
= jiffies
;
2762 if (nfs4_setup_sequence(NFS_SERVER(inode
),
2763 &calldata
->arg
.seq_args
,
2764 &calldata
->res
.seq_res
,
2766 nfs_release_seqid(calldata
->arg
.seqid
);
2767 dprintk("%s: done!\n", __func__
);
2770 task
->tk_action
= NULL
;
2772 nfs4_sequence_done(task
, &calldata
->res
.seq_res
);
2775 static const struct rpc_call_ops nfs4_close_ops
= {
2776 .rpc_call_prepare
= nfs4_close_prepare
,
2777 .rpc_call_done
= nfs4_close_done
,
2778 .rpc_release
= nfs4_free_closedata
,
2781 static bool nfs4_roc(struct inode
*inode
)
2783 if (!nfs_have_layout(inode
))
2785 return pnfs_roc(inode
);
2789 * It is possible for data to be read/written from a mem-mapped file
2790 * after the sys_close call (which hits the vfs layer as a flush).
2791 * This means that we can't safely call nfsv4 close on a file until
2792 * the inode is cleared. This in turn means that we are not good
2793 * NFSv4 citizens - we do not indicate to the server to update the file's
2794 * share state even when we are done with one of the three share
2795 * stateid's in the inode.
2797 * NOTE: Caller must be holding the sp->so_owner semaphore!
2799 int nfs4_do_close(struct nfs4_state
*state
, gfp_t gfp_mask
, int wait
)
2801 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
2802 struct nfs_seqid
*(*alloc_seqid
)(struct nfs_seqid_counter
*, gfp_t
);
2803 struct nfs4_closedata
*calldata
;
2804 struct nfs4_state_owner
*sp
= state
->owner
;
2805 struct rpc_task
*task
;
2806 struct rpc_message msg
= {
2807 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CLOSE
],
2808 .rpc_cred
= state
->owner
->so_cred
,
2810 struct rpc_task_setup task_setup_data
= {
2811 .rpc_client
= server
->client
,
2812 .rpc_message
= &msg
,
2813 .callback_ops
= &nfs4_close_ops
,
2814 .workqueue
= nfsiod_workqueue
,
2815 .flags
= RPC_TASK_ASYNC
,
2817 int status
= -ENOMEM
;
2819 nfs4_state_protect(server
->nfs_client
, NFS_SP4_MACH_CRED_CLEANUP
,
2820 &task_setup_data
.rpc_client
, &msg
);
2822 calldata
= kzalloc(sizeof(*calldata
), gfp_mask
);
2823 if (calldata
== NULL
)
2825 nfs4_init_sequence(&calldata
->arg
.seq_args
, &calldata
->res
.seq_res
, 1);
2826 calldata
->inode
= state
->inode
;
2827 calldata
->state
= state
;
2828 calldata
->arg
.fh
= NFS_FH(state
->inode
);
2829 /* Serialization for the sequence id */
2830 alloc_seqid
= server
->nfs_client
->cl_mvops
->alloc_seqid
;
2831 calldata
->arg
.seqid
= alloc_seqid(&state
->owner
->so_seqid
, gfp_mask
);
2832 if (IS_ERR(calldata
->arg
.seqid
))
2833 goto out_free_calldata
;
2834 calldata
->arg
.fmode
= 0;
2835 calldata
->arg
.bitmask
= server
->cache_consistency_bitmask
;
2836 calldata
->res
.fattr
= &calldata
->fattr
;
2837 calldata
->res
.seqid
= calldata
->arg
.seqid
;
2838 calldata
->res
.server
= server
;
2839 calldata
->roc
= nfs4_roc(state
->inode
);
2840 nfs_sb_active(calldata
->inode
->i_sb
);
2842 msg
.rpc_argp
= &calldata
->arg
;
2843 msg
.rpc_resp
= &calldata
->res
;
2844 task_setup_data
.callback_data
= calldata
;
2845 task
= rpc_run_task(&task_setup_data
);
2847 return PTR_ERR(task
);
2850 status
= rpc_wait_for_completion_task(task
);
2856 nfs4_put_open_state(state
);
2857 nfs4_put_state_owner(sp
);
2861 static struct inode
*
2862 nfs4_atomic_open(struct inode
*dir
, struct nfs_open_context
*ctx
,
2863 int open_flags
, struct iattr
*attr
, int *opened
)
2865 struct nfs4_state
*state
;
2866 struct nfs4_label l
= {0, 0, 0, NULL
}, *label
= NULL
;
2868 label
= nfs4_label_init_security(dir
, ctx
->dentry
, attr
, &l
);
2870 /* Protect against concurrent sillydeletes */
2871 state
= nfs4_do_open(dir
, ctx
, open_flags
, attr
, label
, opened
);
2873 nfs4_label_release_security(label
);
2876 return ERR_CAST(state
);
2877 return state
->inode
;
2880 static void nfs4_close_context(struct nfs_open_context
*ctx
, int is_sync
)
2882 if (ctx
->state
== NULL
)
2885 nfs4_close_sync(ctx
->state
, ctx
->mode
);
2887 nfs4_close_state(ctx
->state
, ctx
->mode
);
2890 #define FATTR4_WORD1_NFS40_MASK (2*FATTR4_WORD1_MOUNTED_ON_FILEID - 1UL)
2891 #define FATTR4_WORD2_NFS41_MASK (2*FATTR4_WORD2_SUPPATTR_EXCLCREAT - 1UL)
2892 #define FATTR4_WORD2_NFS42_MASK (2*FATTR4_WORD2_SECURITY_LABEL - 1UL)
2894 static int _nfs4_server_capabilities(struct nfs_server
*server
, struct nfs_fh
*fhandle
)
2896 struct nfs4_server_caps_arg args
= {
2899 struct nfs4_server_caps_res res
= {};
2900 struct rpc_message msg
= {
2901 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SERVER_CAPS
],
2907 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2909 /* Sanity check the server answers */
2910 switch (server
->nfs_client
->cl_minorversion
) {
2912 res
.attr_bitmask
[1] &= FATTR4_WORD1_NFS40_MASK
;
2913 res
.attr_bitmask
[2] = 0;
2916 res
.attr_bitmask
[2] &= FATTR4_WORD2_NFS41_MASK
;
2919 res
.attr_bitmask
[2] &= FATTR4_WORD2_NFS42_MASK
;
2921 memcpy(server
->attr_bitmask
, res
.attr_bitmask
, sizeof(server
->attr_bitmask
));
2922 server
->caps
&= ~(NFS_CAP_ACLS
|NFS_CAP_HARDLINKS
|
2923 NFS_CAP_SYMLINKS
|NFS_CAP_FILEID
|
2924 NFS_CAP_MODE
|NFS_CAP_NLINK
|NFS_CAP_OWNER
|
2925 NFS_CAP_OWNER_GROUP
|NFS_CAP_ATIME
|
2926 NFS_CAP_CTIME
|NFS_CAP_MTIME
|
2927 NFS_CAP_SECURITY_LABEL
);
2928 if (res
.attr_bitmask
[0] & FATTR4_WORD0_ACL
&&
2929 res
.acl_bitmask
& ACL4_SUPPORT_ALLOW_ACL
)
2930 server
->caps
|= NFS_CAP_ACLS
;
2931 if (res
.has_links
!= 0)
2932 server
->caps
|= NFS_CAP_HARDLINKS
;
2933 if (res
.has_symlinks
!= 0)
2934 server
->caps
|= NFS_CAP_SYMLINKS
;
2935 if (res
.attr_bitmask
[0] & FATTR4_WORD0_FILEID
)
2936 server
->caps
|= NFS_CAP_FILEID
;
2937 if (res
.attr_bitmask
[1] & FATTR4_WORD1_MODE
)
2938 server
->caps
|= NFS_CAP_MODE
;
2939 if (res
.attr_bitmask
[1] & FATTR4_WORD1_NUMLINKS
)
2940 server
->caps
|= NFS_CAP_NLINK
;
2941 if (res
.attr_bitmask
[1] & FATTR4_WORD1_OWNER
)
2942 server
->caps
|= NFS_CAP_OWNER
;
2943 if (res
.attr_bitmask
[1] & FATTR4_WORD1_OWNER_GROUP
)
2944 server
->caps
|= NFS_CAP_OWNER_GROUP
;
2945 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_ACCESS
)
2946 server
->caps
|= NFS_CAP_ATIME
;
2947 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_METADATA
)
2948 server
->caps
|= NFS_CAP_CTIME
;
2949 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_MODIFY
)
2950 server
->caps
|= NFS_CAP_MTIME
;
2951 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
2952 if (res
.attr_bitmask
[2] & FATTR4_WORD2_SECURITY_LABEL
)
2953 server
->caps
|= NFS_CAP_SECURITY_LABEL
;
2955 memcpy(server
->attr_bitmask_nl
, res
.attr_bitmask
,
2956 sizeof(server
->attr_bitmask
));
2957 server
->attr_bitmask_nl
[2] &= ~FATTR4_WORD2_SECURITY_LABEL
;
2959 memcpy(server
->cache_consistency_bitmask
, res
.attr_bitmask
, sizeof(server
->cache_consistency_bitmask
));
2960 server
->cache_consistency_bitmask
[0] &= FATTR4_WORD0_CHANGE
|FATTR4_WORD0_SIZE
;
2961 server
->cache_consistency_bitmask
[1] &= FATTR4_WORD1_TIME_METADATA
|FATTR4_WORD1_TIME_MODIFY
;
2962 server
->cache_consistency_bitmask
[2] = 0;
2963 server
->acl_bitmask
= res
.acl_bitmask
;
2964 server
->fh_expire_type
= res
.fh_expire_type
;
2970 int nfs4_server_capabilities(struct nfs_server
*server
, struct nfs_fh
*fhandle
)
2972 struct nfs4_exception exception
= { };
2975 err
= nfs4_handle_exception(server
,
2976 _nfs4_server_capabilities(server
, fhandle
),
2978 } while (exception
.retry
);
2982 static int _nfs4_lookup_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2983 struct nfs_fsinfo
*info
)
2986 struct nfs4_lookup_root_arg args
= {
2989 struct nfs4_lookup_res res
= {
2991 .fattr
= info
->fattr
,
2994 struct rpc_message msg
= {
2995 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOOKUP_ROOT
],
3000 bitmask
[0] = nfs4_fattr_bitmap
[0];
3001 bitmask
[1] = nfs4_fattr_bitmap
[1];
3003 * Process the label in the upcoming getfattr
3005 bitmask
[2] = nfs4_fattr_bitmap
[2] & ~FATTR4_WORD2_SECURITY_LABEL
;
3007 nfs_fattr_init(info
->fattr
);
3008 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3011 static int nfs4_lookup_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3012 struct nfs_fsinfo
*info
)
3014 struct nfs4_exception exception
= { };
3017 err
= _nfs4_lookup_root(server
, fhandle
, info
);
3018 trace_nfs4_lookup_root(server
, fhandle
, info
->fattr
, err
);
3021 case -NFS4ERR_WRONGSEC
:
3024 err
= nfs4_handle_exception(server
, err
, &exception
);
3026 } while (exception
.retry
);
3031 static int nfs4_lookup_root_sec(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3032 struct nfs_fsinfo
*info
, rpc_authflavor_t flavor
)
3034 struct rpc_auth_create_args auth_args
= {
3035 .pseudoflavor
= flavor
,
3037 struct rpc_auth
*auth
;
3040 auth
= rpcauth_create(&auth_args
, server
->client
);
3045 ret
= nfs4_lookup_root(server
, fhandle
, info
);
3051 * Retry pseudoroot lookup with various security flavors. We do this when:
3053 * NFSv4.0: the PUTROOTFH operation returns NFS4ERR_WRONGSEC
3054 * NFSv4.1: the server does not support the SECINFO_NO_NAME operation
3056 * Returns zero on success, or a negative NFS4ERR value, or a
3057 * negative errno value.
3059 static int nfs4_find_root_sec(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3060 struct nfs_fsinfo
*info
)
3062 /* Per 3530bis 15.33.5 */
3063 static const rpc_authflavor_t flav_array
[] = {
3067 RPC_AUTH_UNIX
, /* courtesy */
3070 int status
= -EPERM
;
3073 if (server
->auth_info
.flavor_len
> 0) {
3074 /* try each flavor specified by user */
3075 for (i
= 0; i
< server
->auth_info
.flavor_len
; i
++) {
3076 status
= nfs4_lookup_root_sec(server
, fhandle
, info
,
3077 server
->auth_info
.flavors
[i
]);
3078 if (status
== -NFS4ERR_WRONGSEC
|| status
== -EACCES
)
3083 /* no flavors specified by user, try default list */
3084 for (i
= 0; i
< ARRAY_SIZE(flav_array
); i
++) {
3085 status
= nfs4_lookup_root_sec(server
, fhandle
, info
,
3087 if (status
== -NFS4ERR_WRONGSEC
|| status
== -EACCES
)
3094 * -EACCESS could mean that the user doesn't have correct permissions
3095 * to access the mount. It could also mean that we tried to mount
3096 * with a gss auth flavor, but rpc.gssd isn't running. Either way,
3097 * existing mount programs don't handle -EACCES very well so it should
3098 * be mapped to -EPERM instead.
3100 if (status
== -EACCES
)
3105 static int nfs4_do_find_root_sec(struct nfs_server
*server
,
3106 struct nfs_fh
*fhandle
, struct nfs_fsinfo
*info
)
3108 int mv
= server
->nfs_client
->cl_minorversion
;
3109 return nfs_v4_minor_ops
[mv
]->find_root_sec(server
, fhandle
, info
);
3113 * nfs4_proc_get_rootfh - get file handle for server's pseudoroot
3114 * @server: initialized nfs_server handle
3115 * @fhandle: we fill in the pseudo-fs root file handle
3116 * @info: we fill in an FSINFO struct
3117 * @auth_probe: probe the auth flavours
3119 * Returns zero on success, or a negative errno.
3121 int nfs4_proc_get_rootfh(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3122 struct nfs_fsinfo
*info
,
3128 status
= nfs4_lookup_root(server
, fhandle
, info
);
3130 if (auth_probe
|| status
== NFS4ERR_WRONGSEC
)
3131 status
= nfs4_do_find_root_sec(server
, fhandle
, info
);
3134 status
= nfs4_server_capabilities(server
, fhandle
);
3136 status
= nfs4_do_fsinfo(server
, fhandle
, info
);
3138 return nfs4_map_errors(status
);
3141 static int nfs4_proc_get_root(struct nfs_server
*server
, struct nfs_fh
*mntfh
,
3142 struct nfs_fsinfo
*info
)
3145 struct nfs_fattr
*fattr
= info
->fattr
;
3146 struct nfs4_label
*label
= NULL
;
3148 error
= nfs4_server_capabilities(server
, mntfh
);
3150 dprintk("nfs4_get_root: getcaps error = %d\n", -error
);
3154 label
= nfs4_label_alloc(server
, GFP_KERNEL
);
3156 return PTR_ERR(label
);
3158 error
= nfs4_proc_getattr(server
, mntfh
, fattr
, label
);
3160 dprintk("nfs4_get_root: getattr error = %d\n", -error
);
3161 goto err_free_label
;
3164 if (fattr
->valid
& NFS_ATTR_FATTR_FSID
&&
3165 !nfs_fsid_equal(&server
->fsid
, &fattr
->fsid
))
3166 memcpy(&server
->fsid
, &fattr
->fsid
, sizeof(server
->fsid
));
3169 nfs4_label_free(label
);
3175 * Get locations and (maybe) other attributes of a referral.
3176 * Note that we'll actually follow the referral later when
3177 * we detect fsid mismatch in inode revalidation
3179 static int nfs4_get_referral(struct rpc_clnt
*client
, struct inode
*dir
,
3180 const struct qstr
*name
, struct nfs_fattr
*fattr
,
3181 struct nfs_fh
*fhandle
)
3183 int status
= -ENOMEM
;
3184 struct page
*page
= NULL
;
3185 struct nfs4_fs_locations
*locations
= NULL
;
3187 page
= alloc_page(GFP_KERNEL
);
3190 locations
= kmalloc(sizeof(struct nfs4_fs_locations
), GFP_KERNEL
);
3191 if (locations
== NULL
)
3194 status
= nfs4_proc_fs_locations(client
, dir
, name
, locations
, page
);
3199 * If the fsid didn't change, this is a migration event, not a
3200 * referral. Cause us to drop into the exception handler, which
3201 * will kick off migration recovery.
3203 if (nfs_fsid_equal(&NFS_SERVER(dir
)->fsid
, &locations
->fattr
.fsid
)) {
3204 dprintk("%s: server did not return a different fsid for"
3205 " a referral at %s\n", __func__
, name
->name
);
3206 status
= -NFS4ERR_MOVED
;
3209 /* Fixup attributes for the nfs_lookup() call to nfs_fhget() */
3210 nfs_fixup_referral_attributes(&locations
->fattr
);
3212 /* replace the lookup nfs_fattr with the locations nfs_fattr */
3213 memcpy(fattr
, &locations
->fattr
, sizeof(struct nfs_fattr
));
3214 memset(fhandle
, 0, sizeof(struct nfs_fh
));
3222 static int _nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3223 struct nfs_fattr
*fattr
, struct nfs4_label
*label
)
3225 struct nfs4_getattr_arg args
= {
3227 .bitmask
= server
->attr_bitmask
,
3229 struct nfs4_getattr_res res
= {
3234 struct rpc_message msg
= {
3235 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETATTR
],
3240 args
.bitmask
= nfs4_bitmask(server
, label
);
3242 nfs_fattr_init(fattr
);
3243 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3246 static int nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3247 struct nfs_fattr
*fattr
, struct nfs4_label
*label
)
3249 struct nfs4_exception exception
= { };
3252 err
= _nfs4_proc_getattr(server
, fhandle
, fattr
, label
);
3253 trace_nfs4_getattr(server
, fhandle
, fattr
, err
);
3254 err
= nfs4_handle_exception(server
, err
,
3256 } while (exception
.retry
);
3261 * The file is not closed if it is opened due to the a request to change
3262 * the size of the file. The open call will not be needed once the
3263 * VFS layer lookup-intents are implemented.
3265 * Close is called when the inode is destroyed.
3266 * If we haven't opened the file for O_WRONLY, we
3267 * need to in the size_change case to obtain a stateid.
3270 * Because OPEN is always done by name in nfsv4, it is
3271 * possible that we opened a different file by the same
3272 * name. We can recognize this race condition, but we
3273 * can't do anything about it besides returning an error.
3275 * This will be fixed with VFS changes (lookup-intent).
3278 nfs4_proc_setattr(struct dentry
*dentry
, struct nfs_fattr
*fattr
,
3279 struct iattr
*sattr
)
3281 struct inode
*inode
= d_inode(dentry
);
3282 struct rpc_cred
*cred
= NULL
;
3283 struct nfs4_state
*state
= NULL
;
3284 struct nfs4_label
*label
= NULL
;
3287 if (pnfs_ld_layoutret_on_setattr(inode
) &&
3288 sattr
->ia_valid
& ATTR_SIZE
&&
3289 sattr
->ia_size
< i_size_read(inode
))
3290 pnfs_commit_and_return_layout(inode
);
3292 nfs_fattr_init(fattr
);
3294 /* Deal with open(O_TRUNC) */
3295 if (sattr
->ia_valid
& ATTR_OPEN
)
3296 sattr
->ia_valid
&= ~(ATTR_MTIME
|ATTR_CTIME
);
3298 /* Optimization: if the end result is no change, don't RPC */
3299 if ((sattr
->ia_valid
& ~(ATTR_FILE
|ATTR_OPEN
)) == 0)
3302 /* Search for an existing open(O_WRITE) file */
3303 if (sattr
->ia_valid
& ATTR_FILE
) {
3304 struct nfs_open_context
*ctx
;
3306 ctx
= nfs_file_open_context(sattr
->ia_file
);
3313 label
= nfs4_label_alloc(NFS_SERVER(inode
), GFP_KERNEL
);
3315 return PTR_ERR(label
);
3317 status
= nfs4_do_setattr(inode
, cred
, fattr
, sattr
, state
, NULL
, label
);
3319 nfs_setattr_update_inode(inode
, sattr
, fattr
);
3320 nfs_setsecurity(inode
, fattr
, label
);
3322 nfs4_label_free(label
);
3326 static int _nfs4_proc_lookup(struct rpc_clnt
*clnt
, struct inode
*dir
,
3327 const struct qstr
*name
, struct nfs_fh
*fhandle
,
3328 struct nfs_fattr
*fattr
, struct nfs4_label
*label
)
3330 struct nfs_server
*server
= NFS_SERVER(dir
);
3332 struct nfs4_lookup_arg args
= {
3333 .bitmask
= server
->attr_bitmask
,
3334 .dir_fh
= NFS_FH(dir
),
3337 struct nfs4_lookup_res res
= {
3343 struct rpc_message msg
= {
3344 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOOKUP
],
3349 args
.bitmask
= nfs4_bitmask(server
, label
);
3351 nfs_fattr_init(fattr
);
3353 dprintk("NFS call lookup %s\n", name
->name
);
3354 status
= nfs4_call_sync(clnt
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3355 dprintk("NFS reply lookup: %d\n", status
);
3359 static void nfs_fixup_secinfo_attributes(struct nfs_fattr
*fattr
)
3361 fattr
->valid
|= NFS_ATTR_FATTR_TYPE
| NFS_ATTR_FATTR_MODE
|
3362 NFS_ATTR_FATTR_NLINK
| NFS_ATTR_FATTR_MOUNTPOINT
;
3363 fattr
->mode
= S_IFDIR
| S_IRUGO
| S_IXUGO
;
3367 static int nfs4_proc_lookup_common(struct rpc_clnt
**clnt
, struct inode
*dir
,
3368 struct qstr
*name
, struct nfs_fh
*fhandle
,
3369 struct nfs_fattr
*fattr
, struct nfs4_label
*label
)
3371 struct nfs4_exception exception
= { };
3372 struct rpc_clnt
*client
= *clnt
;
3375 err
= _nfs4_proc_lookup(client
, dir
, name
, fhandle
, fattr
, label
);
3376 trace_nfs4_lookup(dir
, name
, err
);
3378 case -NFS4ERR_BADNAME
:
3381 case -NFS4ERR_MOVED
:
3382 err
= nfs4_get_referral(client
, dir
, name
, fattr
, fhandle
);
3383 if (err
== -NFS4ERR_MOVED
)
3384 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
, &exception
);
3386 case -NFS4ERR_WRONGSEC
:
3388 if (client
!= *clnt
)
3390 client
= nfs4_negotiate_security(client
, dir
, name
);
3392 return PTR_ERR(client
);
3394 exception
.retry
= 1;
3397 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
, &exception
);
3399 } while (exception
.retry
);
3404 else if (client
!= *clnt
)
3405 rpc_shutdown_client(client
);
3410 static int nfs4_proc_lookup(struct inode
*dir
, struct qstr
*name
,
3411 struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
,
3412 struct nfs4_label
*label
)
3415 struct rpc_clnt
*client
= NFS_CLIENT(dir
);
3417 status
= nfs4_proc_lookup_common(&client
, dir
, name
, fhandle
, fattr
, label
);
3418 if (client
!= NFS_CLIENT(dir
)) {
3419 rpc_shutdown_client(client
);
3420 nfs_fixup_secinfo_attributes(fattr
);
3426 nfs4_proc_lookup_mountpoint(struct inode
*dir
, struct qstr
*name
,
3427 struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
3429 struct rpc_clnt
*client
= NFS_CLIENT(dir
);
3432 status
= nfs4_proc_lookup_common(&client
, dir
, name
, fhandle
, fattr
, NULL
);
3434 return ERR_PTR(status
);
3435 return (client
== NFS_CLIENT(dir
)) ? rpc_clone_client(client
) : client
;
3438 static int _nfs4_proc_access(struct inode
*inode
, struct nfs_access_entry
*entry
)
3440 struct nfs_server
*server
= NFS_SERVER(inode
);
3441 struct nfs4_accessargs args
= {
3442 .fh
= NFS_FH(inode
),
3443 .bitmask
= server
->cache_consistency_bitmask
,
3445 struct nfs4_accessres res
= {
3448 struct rpc_message msg
= {
3449 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_ACCESS
],
3452 .rpc_cred
= entry
->cred
,
3454 int mode
= entry
->mask
;
3458 * Determine which access bits we want to ask for...
3460 if (mode
& MAY_READ
)
3461 args
.access
|= NFS4_ACCESS_READ
;
3462 if (S_ISDIR(inode
->i_mode
)) {
3463 if (mode
& MAY_WRITE
)
3464 args
.access
|= NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
| NFS4_ACCESS_DELETE
;
3465 if (mode
& MAY_EXEC
)
3466 args
.access
|= NFS4_ACCESS_LOOKUP
;
3468 if (mode
& MAY_WRITE
)
3469 args
.access
|= NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
;
3470 if (mode
& MAY_EXEC
)
3471 args
.access
|= NFS4_ACCESS_EXECUTE
;
3474 res
.fattr
= nfs_alloc_fattr();
3475 if (res
.fattr
== NULL
)
3478 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3480 nfs_access_set_mask(entry
, res
.access
);
3481 nfs_refresh_inode(inode
, res
.fattr
);
3483 nfs_free_fattr(res
.fattr
);
3487 static int nfs4_proc_access(struct inode
*inode
, struct nfs_access_entry
*entry
)
3489 struct nfs4_exception exception
= { };
3492 err
= _nfs4_proc_access(inode
, entry
);
3493 trace_nfs4_access(inode
, err
);
3494 err
= nfs4_handle_exception(NFS_SERVER(inode
), err
,
3496 } while (exception
.retry
);
3501 * TODO: For the time being, we don't try to get any attributes
3502 * along with any of the zero-copy operations READ, READDIR,
3505 * In the case of the first three, we want to put the GETATTR
3506 * after the read-type operation -- this is because it is hard
3507 * to predict the length of a GETATTR response in v4, and thus
3508 * align the READ data correctly. This means that the GETATTR
3509 * may end up partially falling into the page cache, and we should
3510 * shift it into the 'tail' of the xdr_buf before processing.
3511 * To do this efficiently, we need to know the total length
3512 * of data received, which doesn't seem to be available outside
3515 * In the case of WRITE, we also want to put the GETATTR after
3516 * the operation -- in this case because we want to make sure
3517 * we get the post-operation mtime and size.
3519 * Both of these changes to the XDR layer would in fact be quite
3520 * minor, but I decided to leave them for a subsequent patch.
3522 static int _nfs4_proc_readlink(struct inode
*inode
, struct page
*page
,
3523 unsigned int pgbase
, unsigned int pglen
)
3525 struct nfs4_readlink args
= {
3526 .fh
= NFS_FH(inode
),
3531 struct nfs4_readlink_res res
;
3532 struct rpc_message msg
= {
3533 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READLINK
],
3538 return nfs4_call_sync(NFS_SERVER(inode
)->client
, NFS_SERVER(inode
), &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3541 static int nfs4_proc_readlink(struct inode
*inode
, struct page
*page
,
3542 unsigned int pgbase
, unsigned int pglen
)
3544 struct nfs4_exception exception
= { };
3547 err
= _nfs4_proc_readlink(inode
, page
, pgbase
, pglen
);
3548 trace_nfs4_readlink(inode
, err
);
3549 err
= nfs4_handle_exception(NFS_SERVER(inode
), err
,
3551 } while (exception
.retry
);
3556 * This is just for mknod. open(O_CREAT) will always do ->open_context().
3559 nfs4_proc_create(struct inode
*dir
, struct dentry
*dentry
, struct iattr
*sattr
,
3562 struct nfs4_label l
, *ilabel
= NULL
;
3563 struct nfs_open_context
*ctx
;
3564 struct nfs4_state
*state
;
3567 ctx
= alloc_nfs_open_context(dentry
, FMODE_READ
);
3569 return PTR_ERR(ctx
);
3571 ilabel
= nfs4_label_init_security(dir
, dentry
, sattr
, &l
);
3573 sattr
->ia_mode
&= ~current_umask();
3574 state
= nfs4_do_open(dir
, ctx
, flags
, sattr
, ilabel
, NULL
);
3575 if (IS_ERR(state
)) {
3576 status
= PTR_ERR(state
);
3580 nfs4_label_release_security(ilabel
);
3581 put_nfs_open_context(ctx
);
3585 static int _nfs4_proc_remove(struct inode
*dir
, struct qstr
*name
)
3587 struct nfs_server
*server
= NFS_SERVER(dir
);
3588 struct nfs_removeargs args
= {
3592 struct nfs_removeres res
= {
3595 struct rpc_message msg
= {
3596 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_REMOVE
],
3602 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 1);
3604 update_changeattr(dir
, &res
.cinfo
);
3608 static int nfs4_proc_remove(struct inode
*dir
, struct qstr
*name
)
3610 struct nfs4_exception exception
= { };
3613 err
= _nfs4_proc_remove(dir
, name
);
3614 trace_nfs4_remove(dir
, name
, err
);
3615 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
3617 } while (exception
.retry
);
3621 static void nfs4_proc_unlink_setup(struct rpc_message
*msg
, struct inode
*dir
)
3623 struct nfs_server
*server
= NFS_SERVER(dir
);
3624 struct nfs_removeargs
*args
= msg
->rpc_argp
;
3625 struct nfs_removeres
*res
= msg
->rpc_resp
;
3627 res
->server
= server
;
3628 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_REMOVE
];
3629 nfs4_init_sequence(&args
->seq_args
, &res
->seq_res
, 1);
3631 nfs_fattr_init(res
->dir_attr
);
3634 static void nfs4_proc_unlink_rpc_prepare(struct rpc_task
*task
, struct nfs_unlinkdata
*data
)
3636 nfs4_setup_sequence(NFS_SERVER(data
->dir
),
3637 &data
->args
.seq_args
,
3642 static int nfs4_proc_unlink_done(struct rpc_task
*task
, struct inode
*dir
)
3644 struct nfs_unlinkdata
*data
= task
->tk_calldata
;
3645 struct nfs_removeres
*res
= &data
->res
;
3647 if (!nfs4_sequence_done(task
, &res
->seq_res
))
3649 if (nfs4_async_handle_error(task
, res
->server
, NULL
,
3650 &data
->timeout
) == -EAGAIN
)
3652 update_changeattr(dir
, &res
->cinfo
);
3656 static void nfs4_proc_rename_setup(struct rpc_message
*msg
, struct inode
*dir
)
3658 struct nfs_server
*server
= NFS_SERVER(dir
);
3659 struct nfs_renameargs
*arg
= msg
->rpc_argp
;
3660 struct nfs_renameres
*res
= msg
->rpc_resp
;
3662 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENAME
];
3663 res
->server
= server
;
3664 nfs4_init_sequence(&arg
->seq_args
, &res
->seq_res
, 1);
3667 static void nfs4_proc_rename_rpc_prepare(struct rpc_task
*task
, struct nfs_renamedata
*data
)
3669 nfs4_setup_sequence(NFS_SERVER(data
->old_dir
),
3670 &data
->args
.seq_args
,
3675 static int nfs4_proc_rename_done(struct rpc_task
*task
, struct inode
*old_dir
,
3676 struct inode
*new_dir
)
3678 struct nfs_renamedata
*data
= task
->tk_calldata
;
3679 struct nfs_renameres
*res
= &data
->res
;
3681 if (!nfs4_sequence_done(task
, &res
->seq_res
))
3683 if (nfs4_async_handle_error(task
, res
->server
, NULL
, &data
->timeout
) == -EAGAIN
)
3686 update_changeattr(old_dir
, &res
->old_cinfo
);
3687 update_changeattr(new_dir
, &res
->new_cinfo
);
3691 static int _nfs4_proc_link(struct inode
*inode
, struct inode
*dir
, struct qstr
*name
)
3693 struct nfs_server
*server
= NFS_SERVER(inode
);
3694 struct nfs4_link_arg arg
= {
3695 .fh
= NFS_FH(inode
),
3696 .dir_fh
= NFS_FH(dir
),
3698 .bitmask
= server
->attr_bitmask
,
3700 struct nfs4_link_res res
= {
3704 struct rpc_message msg
= {
3705 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LINK
],
3709 int status
= -ENOMEM
;
3711 res
.fattr
= nfs_alloc_fattr();
3712 if (res
.fattr
== NULL
)
3715 res
.label
= nfs4_label_alloc(server
, GFP_KERNEL
);
3716 if (IS_ERR(res
.label
)) {
3717 status
= PTR_ERR(res
.label
);
3720 arg
.bitmask
= nfs4_bitmask(server
, res
.label
);
3722 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
3724 update_changeattr(dir
, &res
.cinfo
);
3725 status
= nfs_post_op_update_inode(inode
, res
.fattr
);
3727 nfs_setsecurity(inode
, res
.fattr
, res
.label
);
3731 nfs4_label_free(res
.label
);
3734 nfs_free_fattr(res
.fattr
);
3738 static int nfs4_proc_link(struct inode
*inode
, struct inode
*dir
, struct qstr
*name
)
3740 struct nfs4_exception exception
= { };
3743 err
= nfs4_handle_exception(NFS_SERVER(inode
),
3744 _nfs4_proc_link(inode
, dir
, name
),
3746 } while (exception
.retry
);
3750 struct nfs4_createdata
{
3751 struct rpc_message msg
;
3752 struct nfs4_create_arg arg
;
3753 struct nfs4_create_res res
;
3755 struct nfs_fattr fattr
;
3756 struct nfs4_label
*label
;
3759 static struct nfs4_createdata
*nfs4_alloc_createdata(struct inode
*dir
,
3760 struct qstr
*name
, struct iattr
*sattr
, u32 ftype
)
3762 struct nfs4_createdata
*data
;
3764 data
= kzalloc(sizeof(*data
), GFP_KERNEL
);
3766 struct nfs_server
*server
= NFS_SERVER(dir
);
3768 data
->label
= nfs4_label_alloc(server
, GFP_KERNEL
);
3769 if (IS_ERR(data
->label
))
3772 data
->msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CREATE
];
3773 data
->msg
.rpc_argp
= &data
->arg
;
3774 data
->msg
.rpc_resp
= &data
->res
;
3775 data
->arg
.dir_fh
= NFS_FH(dir
);
3776 data
->arg
.server
= server
;
3777 data
->arg
.name
= name
;
3778 data
->arg
.attrs
= sattr
;
3779 data
->arg
.ftype
= ftype
;
3780 data
->arg
.bitmask
= nfs4_bitmask(server
, data
->label
);
3781 data
->res
.server
= server
;
3782 data
->res
.fh
= &data
->fh
;
3783 data
->res
.fattr
= &data
->fattr
;
3784 data
->res
.label
= data
->label
;
3785 nfs_fattr_init(data
->res
.fattr
);
3793 static int nfs4_do_create(struct inode
*dir
, struct dentry
*dentry
, struct nfs4_createdata
*data
)
3795 int status
= nfs4_call_sync(NFS_SERVER(dir
)->client
, NFS_SERVER(dir
), &data
->msg
,
3796 &data
->arg
.seq_args
, &data
->res
.seq_res
, 1);
3798 update_changeattr(dir
, &data
->res
.dir_cinfo
);
3799 status
= nfs_instantiate(dentry
, data
->res
.fh
, data
->res
.fattr
, data
->res
.label
);
3804 static void nfs4_free_createdata(struct nfs4_createdata
*data
)
3806 nfs4_label_free(data
->label
);
3810 static int _nfs4_proc_symlink(struct inode
*dir
, struct dentry
*dentry
,
3811 struct page
*page
, unsigned int len
, struct iattr
*sattr
,
3812 struct nfs4_label
*label
)
3814 struct nfs4_createdata
*data
;
3815 int status
= -ENAMETOOLONG
;
3817 if (len
> NFS4_MAXPATHLEN
)
3821 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4LNK
);
3825 data
->msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SYMLINK
];
3826 data
->arg
.u
.symlink
.pages
= &page
;
3827 data
->arg
.u
.symlink
.len
= len
;
3828 data
->arg
.label
= label
;
3830 status
= nfs4_do_create(dir
, dentry
, data
);
3832 nfs4_free_createdata(data
);
3837 static int nfs4_proc_symlink(struct inode
*dir
, struct dentry
*dentry
,
3838 struct page
*page
, unsigned int len
, struct iattr
*sattr
)
3840 struct nfs4_exception exception
= { };
3841 struct nfs4_label l
, *label
= NULL
;
3844 label
= nfs4_label_init_security(dir
, dentry
, sattr
, &l
);
3847 err
= _nfs4_proc_symlink(dir
, dentry
, page
, len
, sattr
, label
);
3848 trace_nfs4_symlink(dir
, &dentry
->d_name
, err
);
3849 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
3851 } while (exception
.retry
);
3853 nfs4_label_release_security(label
);
3857 static int _nfs4_proc_mkdir(struct inode
*dir
, struct dentry
*dentry
,
3858 struct iattr
*sattr
, struct nfs4_label
*label
)
3860 struct nfs4_createdata
*data
;
3861 int status
= -ENOMEM
;
3863 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4DIR
);
3867 data
->arg
.label
= label
;
3868 status
= nfs4_do_create(dir
, dentry
, data
);
3870 nfs4_free_createdata(data
);
3875 static int nfs4_proc_mkdir(struct inode
*dir
, struct dentry
*dentry
,
3876 struct iattr
*sattr
)
3878 struct nfs4_exception exception
= { };
3879 struct nfs4_label l
, *label
= NULL
;
3882 label
= nfs4_label_init_security(dir
, dentry
, sattr
, &l
);
3884 sattr
->ia_mode
&= ~current_umask();
3886 err
= _nfs4_proc_mkdir(dir
, dentry
, sattr
, label
);
3887 trace_nfs4_mkdir(dir
, &dentry
->d_name
, err
);
3888 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
3890 } while (exception
.retry
);
3891 nfs4_label_release_security(label
);
3896 static int _nfs4_proc_readdir(struct dentry
*dentry
, struct rpc_cred
*cred
,
3897 u64 cookie
, struct page
**pages
, unsigned int count
, int plus
)
3899 struct inode
*dir
= d_inode(dentry
);
3900 struct nfs4_readdir_arg args
= {
3905 .bitmask
= NFS_SERVER(d_inode(dentry
))->attr_bitmask
,
3908 struct nfs4_readdir_res res
;
3909 struct rpc_message msg
= {
3910 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READDIR
],
3917 dprintk("%s: dentry = %pd2, cookie = %Lu\n", __func__
,
3919 (unsigned long long)cookie
);
3920 nfs4_setup_readdir(cookie
, NFS_I(dir
)->cookieverf
, dentry
, &args
);
3921 res
.pgbase
= args
.pgbase
;
3922 status
= nfs4_call_sync(NFS_SERVER(dir
)->client
, NFS_SERVER(dir
), &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3924 memcpy(NFS_I(dir
)->cookieverf
, res
.verifier
.data
, NFS4_VERIFIER_SIZE
);
3925 status
+= args
.pgbase
;
3928 nfs_invalidate_atime(dir
);
3930 dprintk("%s: returns %d\n", __func__
, status
);
3934 static int nfs4_proc_readdir(struct dentry
*dentry
, struct rpc_cred
*cred
,
3935 u64 cookie
, struct page
**pages
, unsigned int count
, int plus
)
3937 struct nfs4_exception exception
= { };
3940 err
= _nfs4_proc_readdir(dentry
, cred
, cookie
,
3941 pages
, count
, plus
);
3942 trace_nfs4_readdir(d_inode(dentry
), err
);
3943 err
= nfs4_handle_exception(NFS_SERVER(d_inode(dentry
)), err
,
3945 } while (exception
.retry
);
3949 static int _nfs4_proc_mknod(struct inode
*dir
, struct dentry
*dentry
,
3950 struct iattr
*sattr
, struct nfs4_label
*label
, dev_t rdev
)
3952 struct nfs4_createdata
*data
;
3953 int mode
= sattr
->ia_mode
;
3954 int status
= -ENOMEM
;
3956 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4SOCK
);
3961 data
->arg
.ftype
= NF4FIFO
;
3962 else if (S_ISBLK(mode
)) {
3963 data
->arg
.ftype
= NF4BLK
;
3964 data
->arg
.u
.device
.specdata1
= MAJOR(rdev
);
3965 data
->arg
.u
.device
.specdata2
= MINOR(rdev
);
3967 else if (S_ISCHR(mode
)) {
3968 data
->arg
.ftype
= NF4CHR
;
3969 data
->arg
.u
.device
.specdata1
= MAJOR(rdev
);
3970 data
->arg
.u
.device
.specdata2
= MINOR(rdev
);
3971 } else if (!S_ISSOCK(mode
)) {
3976 data
->arg
.label
= label
;
3977 status
= nfs4_do_create(dir
, dentry
, data
);
3979 nfs4_free_createdata(data
);
3984 static int nfs4_proc_mknod(struct inode
*dir
, struct dentry
*dentry
,
3985 struct iattr
*sattr
, dev_t rdev
)
3987 struct nfs4_exception exception
= { };
3988 struct nfs4_label l
, *label
= NULL
;
3991 label
= nfs4_label_init_security(dir
, dentry
, sattr
, &l
);
3993 sattr
->ia_mode
&= ~current_umask();
3995 err
= _nfs4_proc_mknod(dir
, dentry
, sattr
, label
, rdev
);
3996 trace_nfs4_mknod(dir
, &dentry
->d_name
, err
);
3997 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
3999 } while (exception
.retry
);
4001 nfs4_label_release_security(label
);
4006 static int _nfs4_proc_statfs(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
4007 struct nfs_fsstat
*fsstat
)
4009 struct nfs4_statfs_arg args
= {
4011 .bitmask
= server
->attr_bitmask
,
4013 struct nfs4_statfs_res res
= {
4016 struct rpc_message msg
= {
4017 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_STATFS
],
4022 nfs_fattr_init(fsstat
->fattr
);
4023 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
4026 static int nfs4_proc_statfs(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsstat
*fsstat
)
4028 struct nfs4_exception exception
= { };
4031 err
= nfs4_handle_exception(server
,
4032 _nfs4_proc_statfs(server
, fhandle
, fsstat
),
4034 } while (exception
.retry
);
4038 static int _nfs4_do_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
4039 struct nfs_fsinfo
*fsinfo
)
4041 struct nfs4_fsinfo_arg args
= {
4043 .bitmask
= server
->attr_bitmask
,
4045 struct nfs4_fsinfo_res res
= {
4048 struct rpc_message msg
= {
4049 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FSINFO
],
4054 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
4057 static int nfs4_do_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsinfo
*fsinfo
)
4059 struct nfs4_exception exception
= { };
4060 unsigned long now
= jiffies
;
4064 err
= _nfs4_do_fsinfo(server
, fhandle
, fsinfo
);
4065 trace_nfs4_fsinfo(server
, fhandle
, fsinfo
->fattr
, err
);
4067 struct nfs_client
*clp
= server
->nfs_client
;
4069 spin_lock(&clp
->cl_lock
);
4070 clp
->cl_lease_time
= fsinfo
->lease_time
* HZ
;
4071 clp
->cl_last_renewal
= now
;
4072 spin_unlock(&clp
->cl_lock
);
4075 err
= nfs4_handle_exception(server
, err
, &exception
);
4076 } while (exception
.retry
);
4080 static int nfs4_proc_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsinfo
*fsinfo
)
4084 nfs_fattr_init(fsinfo
->fattr
);
4085 error
= nfs4_do_fsinfo(server
, fhandle
, fsinfo
);
4087 /* block layout checks this! */
4088 server
->pnfs_blksize
= fsinfo
->blksize
;
4089 set_pnfs_layoutdriver(server
, fhandle
, fsinfo
->layouttype
);
4095 static int _nfs4_proc_pathconf(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
4096 struct nfs_pathconf
*pathconf
)
4098 struct nfs4_pathconf_arg args
= {
4100 .bitmask
= server
->attr_bitmask
,
4102 struct nfs4_pathconf_res res
= {
4103 .pathconf
= pathconf
,
4105 struct rpc_message msg
= {
4106 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_PATHCONF
],
4111 /* None of the pathconf attributes are mandatory to implement */
4112 if ((args
.bitmask
[0] & nfs4_pathconf_bitmap
[0]) == 0) {
4113 memset(pathconf
, 0, sizeof(*pathconf
));
4117 nfs_fattr_init(pathconf
->fattr
);
4118 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
4121 static int nfs4_proc_pathconf(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
4122 struct nfs_pathconf
*pathconf
)
4124 struct nfs4_exception exception
= { };
4128 err
= nfs4_handle_exception(server
,
4129 _nfs4_proc_pathconf(server
, fhandle
, pathconf
),
4131 } while (exception
.retry
);
4135 int nfs4_set_rw_stateid(nfs4_stateid
*stateid
,
4136 const struct nfs_open_context
*ctx
,
4137 const struct nfs_lock_context
*l_ctx
,
4140 const struct nfs_lockowner
*lockowner
= NULL
;
4143 lockowner
= &l_ctx
->lockowner
;
4144 return nfs4_select_rw_stateid(stateid
, ctx
->state
, fmode
, lockowner
);
4146 EXPORT_SYMBOL_GPL(nfs4_set_rw_stateid
);
4148 static bool nfs4_stateid_is_current(nfs4_stateid
*stateid
,
4149 const struct nfs_open_context
*ctx
,
4150 const struct nfs_lock_context
*l_ctx
,
4153 nfs4_stateid current_stateid
;
4155 /* If the current stateid represents a lost lock, then exit */
4156 if (nfs4_set_rw_stateid(¤t_stateid
, ctx
, l_ctx
, fmode
) == -EIO
)
4158 return nfs4_stateid_match(stateid
, ¤t_stateid
);
4161 static bool nfs4_error_stateid_expired(int err
)
4164 case -NFS4ERR_DELEG_REVOKED
:
4165 case -NFS4ERR_ADMIN_REVOKED
:
4166 case -NFS4ERR_BAD_STATEID
:
4167 case -NFS4ERR_STALE_STATEID
:
4168 case -NFS4ERR_OLD_STATEID
:
4169 case -NFS4ERR_OPENMODE
:
4170 case -NFS4ERR_EXPIRED
:
4176 void __nfs4_read_done_cb(struct nfs_pgio_header
*hdr
)
4178 nfs_invalidate_atime(hdr
->inode
);
4181 static int nfs4_read_done_cb(struct rpc_task
*task
, struct nfs_pgio_header
*hdr
)
4183 struct nfs_server
*server
= NFS_SERVER(hdr
->inode
);
4185 trace_nfs4_read(hdr
, task
->tk_status
);
4186 if (nfs4_async_handle_error(task
, server
,
4187 hdr
->args
.context
->state
,
4189 rpc_restart_call_prepare(task
);
4193 __nfs4_read_done_cb(hdr
);
4194 if (task
->tk_status
> 0)
4195 renew_lease(server
, hdr
->timestamp
);
4199 static bool nfs4_read_stateid_changed(struct rpc_task
*task
,
4200 struct nfs_pgio_args
*args
)
4203 if (!nfs4_error_stateid_expired(task
->tk_status
) ||
4204 nfs4_stateid_is_current(&args
->stateid
,
4209 rpc_restart_call_prepare(task
);
4213 static int nfs4_read_done(struct rpc_task
*task
, struct nfs_pgio_header
*hdr
)
4216 dprintk("--> %s\n", __func__
);
4218 if (!nfs4_sequence_done(task
, &hdr
->res
.seq_res
))
4220 if (nfs4_read_stateid_changed(task
, &hdr
->args
))
4222 return hdr
->pgio_done_cb
? hdr
->pgio_done_cb(task
, hdr
) :
4223 nfs4_read_done_cb(task
, hdr
);
4226 static void nfs4_proc_read_setup(struct nfs_pgio_header
*hdr
,
4227 struct rpc_message
*msg
)
4229 hdr
->timestamp
= jiffies
;
4230 hdr
->pgio_done_cb
= nfs4_read_done_cb
;
4231 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READ
];
4232 nfs4_init_sequence(&hdr
->args
.seq_args
, &hdr
->res
.seq_res
, 0);
4235 static int nfs4_proc_pgio_rpc_prepare(struct rpc_task
*task
,
4236 struct nfs_pgio_header
*hdr
)
4238 if (nfs4_setup_sequence(NFS_SERVER(hdr
->inode
),
4239 &hdr
->args
.seq_args
,
4243 if (nfs4_set_rw_stateid(&hdr
->args
.stateid
, hdr
->args
.context
,
4244 hdr
->args
.lock_context
,
4245 hdr
->rw_ops
->rw_mode
) == -EIO
)
4247 if (unlikely(test_bit(NFS_CONTEXT_BAD
, &hdr
->args
.context
->flags
)))
4252 static int nfs4_write_done_cb(struct rpc_task
*task
,
4253 struct nfs_pgio_header
*hdr
)
4255 struct inode
*inode
= hdr
->inode
;
4257 trace_nfs4_write(hdr
, task
->tk_status
);
4258 if (nfs4_async_handle_error(task
, NFS_SERVER(inode
),
4259 hdr
->args
.context
->state
,
4261 rpc_restart_call_prepare(task
);
4264 if (task
->tk_status
>= 0) {
4265 renew_lease(NFS_SERVER(inode
), hdr
->timestamp
);
4266 nfs_writeback_update_inode(hdr
);
4271 static bool nfs4_write_stateid_changed(struct rpc_task
*task
,
4272 struct nfs_pgio_args
*args
)
4275 if (!nfs4_error_stateid_expired(task
->tk_status
) ||
4276 nfs4_stateid_is_current(&args
->stateid
,
4281 rpc_restart_call_prepare(task
);
4285 static int nfs4_write_done(struct rpc_task
*task
, struct nfs_pgio_header
*hdr
)
4287 if (!nfs4_sequence_done(task
, &hdr
->res
.seq_res
))
4289 if (nfs4_write_stateid_changed(task
, &hdr
->args
))
4291 return hdr
->pgio_done_cb
? hdr
->pgio_done_cb(task
, hdr
) :
4292 nfs4_write_done_cb(task
, hdr
);
4296 bool nfs4_write_need_cache_consistency_data(struct nfs_pgio_header
*hdr
)
4298 /* Don't request attributes for pNFS or O_DIRECT writes */
4299 if (hdr
->ds_clp
!= NULL
|| hdr
->dreq
!= NULL
)
4301 /* Otherwise, request attributes if and only if we don't hold
4304 return nfs4_have_delegation(hdr
->inode
, FMODE_READ
) == 0;
4307 static void nfs4_proc_write_setup(struct nfs_pgio_header
*hdr
,
4308 struct rpc_message
*msg
)
4310 struct nfs_server
*server
= NFS_SERVER(hdr
->inode
);
4312 if (!nfs4_write_need_cache_consistency_data(hdr
)) {
4313 hdr
->args
.bitmask
= NULL
;
4314 hdr
->res
.fattr
= NULL
;
4316 hdr
->args
.bitmask
= server
->cache_consistency_bitmask
;
4318 if (!hdr
->pgio_done_cb
)
4319 hdr
->pgio_done_cb
= nfs4_write_done_cb
;
4320 hdr
->res
.server
= server
;
4321 hdr
->timestamp
= jiffies
;
4323 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_WRITE
];
4324 nfs4_init_sequence(&hdr
->args
.seq_args
, &hdr
->res
.seq_res
, 1);
4327 static void nfs4_proc_commit_rpc_prepare(struct rpc_task
*task
, struct nfs_commit_data
*data
)
4329 nfs4_setup_sequence(NFS_SERVER(data
->inode
),
4330 &data
->args
.seq_args
,
4335 static int nfs4_commit_done_cb(struct rpc_task
*task
, struct nfs_commit_data
*data
)
4337 struct inode
*inode
= data
->inode
;
4339 trace_nfs4_commit(data
, task
->tk_status
);
4340 if (nfs4_async_handle_error(task
, NFS_SERVER(inode
),
4341 NULL
, NULL
) == -EAGAIN
) {
4342 rpc_restart_call_prepare(task
);
4348 static int nfs4_commit_done(struct rpc_task
*task
, struct nfs_commit_data
*data
)
4350 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
4352 return data
->commit_done_cb(task
, data
);
4355 static void nfs4_proc_commit_setup(struct nfs_commit_data
*data
, struct rpc_message
*msg
)
4357 struct nfs_server
*server
= NFS_SERVER(data
->inode
);
4359 if (data
->commit_done_cb
== NULL
)
4360 data
->commit_done_cb
= nfs4_commit_done_cb
;
4361 data
->res
.server
= server
;
4362 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_COMMIT
];
4363 nfs4_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
4366 struct nfs4_renewdata
{
4367 struct nfs_client
*client
;
4368 unsigned long timestamp
;
4372 * nfs4_proc_async_renew(): This is not one of the nfs_rpc_ops; it is a special
4373 * standalone procedure for queueing an asynchronous RENEW.
4375 static void nfs4_renew_release(void *calldata
)
4377 struct nfs4_renewdata
*data
= calldata
;
4378 struct nfs_client
*clp
= data
->client
;
4380 if (atomic_read(&clp
->cl_count
) > 1)
4381 nfs4_schedule_state_renewal(clp
);
4382 nfs_put_client(clp
);
4386 static void nfs4_renew_done(struct rpc_task
*task
, void *calldata
)
4388 struct nfs4_renewdata
*data
= calldata
;
4389 struct nfs_client
*clp
= data
->client
;
4390 unsigned long timestamp
= data
->timestamp
;
4392 trace_nfs4_renew_async(clp
, task
->tk_status
);
4393 switch (task
->tk_status
) {
4396 case -NFS4ERR_LEASE_MOVED
:
4397 nfs4_schedule_lease_moved_recovery(clp
);
4400 /* Unless we're shutting down, schedule state recovery! */
4401 if (test_bit(NFS_CS_RENEWD
, &clp
->cl_res_state
) == 0)
4403 if (task
->tk_status
!= NFS4ERR_CB_PATH_DOWN
) {
4404 nfs4_schedule_lease_recovery(clp
);
4407 nfs4_schedule_path_down_recovery(clp
);
4409 do_renew_lease(clp
, timestamp
);
4412 static const struct rpc_call_ops nfs4_renew_ops
= {
4413 .rpc_call_done
= nfs4_renew_done
,
4414 .rpc_release
= nfs4_renew_release
,
4417 static int nfs4_proc_async_renew(struct nfs_client
*clp
, struct rpc_cred
*cred
, unsigned renew_flags
)
4419 struct rpc_message msg
= {
4420 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENEW
],
4424 struct nfs4_renewdata
*data
;
4426 if (renew_flags
== 0)
4428 if (!atomic_inc_not_zero(&clp
->cl_count
))
4430 data
= kmalloc(sizeof(*data
), GFP_NOFS
);
4434 data
->timestamp
= jiffies
;
4435 return rpc_call_async(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
,
4436 &nfs4_renew_ops
, data
);
4439 static int nfs4_proc_renew(struct nfs_client
*clp
, struct rpc_cred
*cred
)
4441 struct rpc_message msg
= {
4442 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENEW
],
4446 unsigned long now
= jiffies
;
4449 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
4452 do_renew_lease(clp
, now
);
4456 static inline int nfs4_server_supports_acls(struct nfs_server
*server
)
4458 return server
->caps
& NFS_CAP_ACLS
;
4461 /* Assuming that XATTR_SIZE_MAX is a multiple of PAGE_SIZE, and that
4462 * it's OK to put sizeof(void) * (XATTR_SIZE_MAX/PAGE_SIZE) bytes on
4465 #define NFS4ACL_MAXPAGES DIV_ROUND_UP(XATTR_SIZE_MAX, PAGE_SIZE)
4467 static int buf_to_pages_noslab(const void *buf
, size_t buflen
,
4468 struct page
**pages
, unsigned int *pgbase
)
4470 struct page
*newpage
, **spages
;
4476 len
= min_t(size_t, PAGE_SIZE
, buflen
);
4477 newpage
= alloc_page(GFP_KERNEL
);
4479 if (newpage
== NULL
)
4481 memcpy(page_address(newpage
), buf
, len
);
4486 } while (buflen
!= 0);
4492 __free_page(spages
[rc
-1]);
4496 struct nfs4_cached_acl
{
4502 static void nfs4_set_cached_acl(struct inode
*inode
, struct nfs4_cached_acl
*acl
)
4504 struct nfs_inode
*nfsi
= NFS_I(inode
);
4506 spin_lock(&inode
->i_lock
);
4507 kfree(nfsi
->nfs4_acl
);
4508 nfsi
->nfs4_acl
= acl
;
4509 spin_unlock(&inode
->i_lock
);
4512 static void nfs4_zap_acl_attr(struct inode
*inode
)
4514 nfs4_set_cached_acl(inode
, NULL
);
4517 static inline ssize_t
nfs4_read_cached_acl(struct inode
*inode
, char *buf
, size_t buflen
)
4519 struct nfs_inode
*nfsi
= NFS_I(inode
);
4520 struct nfs4_cached_acl
*acl
;
4523 spin_lock(&inode
->i_lock
);
4524 acl
= nfsi
->nfs4_acl
;
4527 if (buf
== NULL
) /* user is just asking for length */
4529 if (acl
->cached
== 0)
4531 ret
= -ERANGE
; /* see getxattr(2) man page */
4532 if (acl
->len
> buflen
)
4534 memcpy(buf
, acl
->data
, acl
->len
);
4538 spin_unlock(&inode
->i_lock
);
4542 static void nfs4_write_cached_acl(struct inode
*inode
, struct page
**pages
, size_t pgbase
, size_t acl_len
)
4544 struct nfs4_cached_acl
*acl
;
4545 size_t buflen
= sizeof(*acl
) + acl_len
;
4547 if (buflen
<= PAGE_SIZE
) {
4548 acl
= kmalloc(buflen
, GFP_KERNEL
);
4552 _copy_from_pages(acl
->data
, pages
, pgbase
, acl_len
);
4554 acl
= kmalloc(sizeof(*acl
), GFP_KERNEL
);
4561 nfs4_set_cached_acl(inode
, acl
);
4565 * The getxattr API returns the required buffer length when called with a
4566 * NULL buf. The NFSv4 acl tool then calls getxattr again after allocating
4567 * the required buf. On a NULL buf, we send a page of data to the server
4568 * guessing that the ACL request can be serviced by a page. If so, we cache
4569 * up to the page of ACL data, and the 2nd call to getxattr is serviced by
4570 * the cache. If not so, we throw away the page, and cache the required
4571 * length. The next getxattr call will then produce another round trip to
4572 * the server, this time with the input buf of the required size.
4574 static ssize_t
__nfs4_get_acl_uncached(struct inode
*inode
, void *buf
, size_t buflen
)
4576 struct page
*pages
[NFS4ACL_MAXPAGES
] = {NULL
, };
4577 struct nfs_getaclargs args
= {
4578 .fh
= NFS_FH(inode
),
4582 struct nfs_getaclres res
= {
4585 struct rpc_message msg
= {
4586 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETACL
],
4590 unsigned int npages
= DIV_ROUND_UP(buflen
, PAGE_SIZE
);
4591 int ret
= -ENOMEM
, i
;
4593 /* As long as we're doing a round trip to the server anyway,
4594 * let's be prepared for a page of acl data. */
4597 if (npages
> ARRAY_SIZE(pages
))
4600 for (i
= 0; i
< npages
; i
++) {
4601 pages
[i
] = alloc_page(GFP_KERNEL
);
4606 /* for decoding across pages */
4607 res
.acl_scratch
= alloc_page(GFP_KERNEL
);
4608 if (!res
.acl_scratch
)
4611 args
.acl_len
= npages
* PAGE_SIZE
;
4612 args
.acl_pgbase
= 0;
4614 dprintk("%s buf %p buflen %zu npages %d args.acl_len %zu\n",
4615 __func__
, buf
, buflen
, npages
, args
.acl_len
);
4616 ret
= nfs4_call_sync(NFS_SERVER(inode
)->client
, NFS_SERVER(inode
),
4617 &msg
, &args
.seq_args
, &res
.seq_res
, 0);
4621 /* Handle the case where the passed-in buffer is too short */
4622 if (res
.acl_flags
& NFS4_ACL_TRUNC
) {
4623 /* Did the user only issue a request for the acl length? */
4629 nfs4_write_cached_acl(inode
, pages
, res
.acl_data_offset
, res
.acl_len
);
4631 if (res
.acl_len
> buflen
) {
4635 _copy_from_pages(buf
, pages
, res
.acl_data_offset
, res
.acl_len
);
4640 for (i
= 0; i
< npages
; i
++)
4642 __free_page(pages
[i
]);
4643 if (res
.acl_scratch
)
4644 __free_page(res
.acl_scratch
);
4648 static ssize_t
nfs4_get_acl_uncached(struct inode
*inode
, void *buf
, size_t buflen
)
4650 struct nfs4_exception exception
= { };
4653 ret
= __nfs4_get_acl_uncached(inode
, buf
, buflen
);
4654 trace_nfs4_get_acl(inode
, ret
);
4657 ret
= nfs4_handle_exception(NFS_SERVER(inode
), ret
, &exception
);
4658 } while (exception
.retry
);
4662 static ssize_t
nfs4_proc_get_acl(struct inode
*inode
, void *buf
, size_t buflen
)
4664 struct nfs_server
*server
= NFS_SERVER(inode
);
4667 if (!nfs4_server_supports_acls(server
))
4669 ret
= nfs_revalidate_inode(server
, inode
);
4672 if (NFS_I(inode
)->cache_validity
& NFS_INO_INVALID_ACL
)
4673 nfs_zap_acl_cache(inode
);
4674 ret
= nfs4_read_cached_acl(inode
, buf
, buflen
);
4676 /* -ENOENT is returned if there is no ACL or if there is an ACL
4677 * but no cached acl data, just the acl length */
4679 return nfs4_get_acl_uncached(inode
, buf
, buflen
);
4682 static int __nfs4_proc_set_acl(struct inode
*inode
, const void *buf
, size_t buflen
)
4684 struct nfs_server
*server
= NFS_SERVER(inode
);
4685 struct page
*pages
[NFS4ACL_MAXPAGES
];
4686 struct nfs_setaclargs arg
= {
4687 .fh
= NFS_FH(inode
),
4691 struct nfs_setaclres res
;
4692 struct rpc_message msg
= {
4693 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETACL
],
4697 unsigned int npages
= DIV_ROUND_UP(buflen
, PAGE_SIZE
);
4700 if (!nfs4_server_supports_acls(server
))
4702 if (npages
> ARRAY_SIZE(pages
))
4704 i
= buf_to_pages_noslab(buf
, buflen
, arg
.acl_pages
, &arg
.acl_pgbase
);
4707 nfs4_inode_return_delegation(inode
);
4708 ret
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
4711 * Free each page after tx, so the only ref left is
4712 * held by the network stack
4715 put_page(pages
[i
-1]);
4718 * Acl update can result in inode attribute update.
4719 * so mark the attribute cache invalid.
4721 spin_lock(&inode
->i_lock
);
4722 NFS_I(inode
)->cache_validity
|= NFS_INO_INVALID_ATTR
;
4723 spin_unlock(&inode
->i_lock
);
4724 nfs_access_zap_cache(inode
);
4725 nfs_zap_acl_cache(inode
);
4729 static int nfs4_proc_set_acl(struct inode
*inode
, const void *buf
, size_t buflen
)
4731 struct nfs4_exception exception
= { };
4734 err
= __nfs4_proc_set_acl(inode
, buf
, buflen
);
4735 trace_nfs4_set_acl(inode
, err
);
4736 err
= nfs4_handle_exception(NFS_SERVER(inode
), err
,
4738 } while (exception
.retry
);
4742 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
4743 static int _nfs4_get_security_label(struct inode
*inode
, void *buf
,
4746 struct nfs_server
*server
= NFS_SERVER(inode
);
4747 struct nfs_fattr fattr
;
4748 struct nfs4_label label
= {0, 0, buflen
, buf
};
4750 u32 bitmask
[3] = { 0, 0, FATTR4_WORD2_SECURITY_LABEL
};
4751 struct nfs4_getattr_arg arg
= {
4752 .fh
= NFS_FH(inode
),
4755 struct nfs4_getattr_res res
= {
4760 struct rpc_message msg
= {
4761 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETATTR
],
4767 nfs_fattr_init(&fattr
);
4769 ret
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 0);
4772 if (!(fattr
.valid
& NFS_ATTR_FATTR_V4_SECURITY_LABEL
))
4774 if (buflen
< label
.len
)
4779 static int nfs4_get_security_label(struct inode
*inode
, void *buf
,
4782 struct nfs4_exception exception
= { };
4785 if (!nfs_server_capable(inode
, NFS_CAP_SECURITY_LABEL
))
4789 err
= _nfs4_get_security_label(inode
, buf
, buflen
);
4790 trace_nfs4_get_security_label(inode
, err
);
4791 err
= nfs4_handle_exception(NFS_SERVER(inode
), err
,
4793 } while (exception
.retry
);
4797 static int _nfs4_do_set_security_label(struct inode
*inode
,
4798 struct nfs4_label
*ilabel
,
4799 struct nfs_fattr
*fattr
,
4800 struct nfs4_label
*olabel
)
4803 struct iattr sattr
= {0};
4804 struct nfs_server
*server
= NFS_SERVER(inode
);
4805 const u32 bitmask
[3] = { 0, 0, FATTR4_WORD2_SECURITY_LABEL
};
4806 struct nfs_setattrargs arg
= {
4807 .fh
= NFS_FH(inode
),
4813 struct nfs_setattrres res
= {
4818 struct rpc_message msg
= {
4819 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETATTR
],
4825 nfs4_stateid_copy(&arg
.stateid
, &zero_stateid
);
4827 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
4829 dprintk("%s failed: %d\n", __func__
, status
);
4834 static int nfs4_do_set_security_label(struct inode
*inode
,
4835 struct nfs4_label
*ilabel
,
4836 struct nfs_fattr
*fattr
,
4837 struct nfs4_label
*olabel
)
4839 struct nfs4_exception exception
= { };
4843 err
= _nfs4_do_set_security_label(inode
, ilabel
,
4845 trace_nfs4_set_security_label(inode
, err
);
4846 err
= nfs4_handle_exception(NFS_SERVER(inode
), err
,
4848 } while (exception
.retry
);
4853 nfs4_set_security_label(struct dentry
*dentry
, const void *buf
, size_t buflen
)
4855 struct nfs4_label ilabel
, *olabel
= NULL
;
4856 struct nfs_fattr fattr
;
4857 struct rpc_cred
*cred
;
4858 struct inode
*inode
= d_inode(dentry
);
4861 if (!nfs_server_capable(inode
, NFS_CAP_SECURITY_LABEL
))
4864 nfs_fattr_init(&fattr
);
4868 ilabel
.label
= (char *)buf
;
4869 ilabel
.len
= buflen
;
4871 cred
= rpc_lookup_cred();
4873 return PTR_ERR(cred
);
4875 olabel
= nfs4_label_alloc(NFS_SERVER(inode
), GFP_KERNEL
);
4876 if (IS_ERR(olabel
)) {
4877 status
= -PTR_ERR(olabel
);
4881 status
= nfs4_do_set_security_label(inode
, &ilabel
, &fattr
, olabel
);
4883 nfs_setsecurity(inode
, &fattr
, olabel
);
4885 nfs4_label_free(olabel
);
4890 #endif /* CONFIG_NFS_V4_SECURITY_LABEL */
4894 nfs4_async_handle_error(struct rpc_task
*task
, const struct nfs_server
*server
,
4895 struct nfs4_state
*state
, long *timeout
)
4897 struct nfs_client
*clp
= server
->nfs_client
;
4899 if (task
->tk_status
>= 0)
4901 switch(task
->tk_status
) {
4902 case -NFS4ERR_DELEG_REVOKED
:
4903 case -NFS4ERR_ADMIN_REVOKED
:
4904 case -NFS4ERR_BAD_STATEID
:
4905 case -NFS4ERR_OPENMODE
:
4908 if (nfs4_schedule_stateid_recovery(server
, state
) < 0)
4909 goto recovery_failed
;
4910 goto wait_on_recovery
;
4911 case -NFS4ERR_EXPIRED
:
4912 if (state
!= NULL
) {
4913 if (nfs4_schedule_stateid_recovery(server
, state
) < 0)
4914 goto recovery_failed
;
4916 case -NFS4ERR_STALE_STATEID
:
4917 case -NFS4ERR_STALE_CLIENTID
:
4918 nfs4_schedule_lease_recovery(clp
);
4919 goto wait_on_recovery
;
4920 case -NFS4ERR_MOVED
:
4921 if (nfs4_schedule_migration_recovery(server
) < 0)
4922 goto recovery_failed
;
4923 goto wait_on_recovery
;
4924 case -NFS4ERR_LEASE_MOVED
:
4925 nfs4_schedule_lease_moved_recovery(clp
);
4926 goto wait_on_recovery
;
4927 #if defined(CONFIG_NFS_V4_1)
4928 case -NFS4ERR_BADSESSION
:
4929 case -NFS4ERR_BADSLOT
:
4930 case -NFS4ERR_BAD_HIGH_SLOT
:
4931 case -NFS4ERR_DEADSESSION
:
4932 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
4933 case -NFS4ERR_SEQ_FALSE_RETRY
:
4934 case -NFS4ERR_SEQ_MISORDERED
:
4935 dprintk("%s ERROR %d, Reset session\n", __func__
,
4937 nfs4_schedule_session_recovery(clp
->cl_session
, task
->tk_status
);
4938 goto wait_on_recovery
;
4939 #endif /* CONFIG_NFS_V4_1 */
4940 case -NFS4ERR_DELAY
:
4941 nfs_inc_server_stats(server
, NFSIOS_DELAY
);
4942 rpc_delay(task
, nfs4_update_delay(timeout
));
4944 case -NFS4ERR_GRACE
:
4945 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
4946 case -NFS4ERR_RETRY_UNCACHED_REP
:
4947 case -NFS4ERR_OLD_STATEID
:
4950 task
->tk_status
= nfs4_map_errors(task
->tk_status
);
4953 task
->tk_status
= -EIO
;
4956 rpc_sleep_on(&clp
->cl_rpcwaitq
, task
, NULL
);
4957 if (test_bit(NFS4CLNT_MANAGER_RUNNING
, &clp
->cl_state
) == 0)
4958 rpc_wake_up_queued_task(&clp
->cl_rpcwaitq
, task
);
4959 if (test_bit(NFS_MIG_FAILED
, &server
->mig_status
))
4960 goto recovery_failed
;
4962 task
->tk_status
= 0;
4966 static void nfs4_init_boot_verifier(const struct nfs_client
*clp
,
4967 nfs4_verifier
*bootverf
)
4971 if (test_bit(NFS4CLNT_PURGE_STATE
, &clp
->cl_state
)) {
4972 /* An impossible timestamp guarantees this value
4973 * will never match a generated boot time. */
4975 verf
[1] = cpu_to_be32(NSEC_PER_SEC
+ 1);
4977 struct nfs_net
*nn
= net_generic(clp
->cl_net
, nfs_net_id
);
4978 verf
[0] = cpu_to_be32(nn
->boot_time
.tv_sec
);
4979 verf
[1] = cpu_to_be32(nn
->boot_time
.tv_nsec
);
4981 memcpy(bootverf
->data
, verf
, sizeof(bootverf
->data
));
4985 nfs4_init_nonuniform_client_string(struct nfs_client
*clp
)
4990 bool retried
= false;
4992 if (clp
->cl_owner_id
!= NULL
)
4996 len
= 10 + strlen(clp
->cl_ipaddr
) + 1 +
4997 strlen(rpc_peeraddr2str(clp
->cl_rpcclient
, RPC_DISPLAY_ADDR
)) +
4999 strlen(rpc_peeraddr2str(clp
->cl_rpcclient
, RPC_DISPLAY_PROTO
)) +
5003 if (len
> NFS4_OPAQUE_LIMIT
+ 1)
5007 * Since this string is allocated at mount time, and held until the
5008 * nfs_client is destroyed, we can use GFP_KERNEL here w/o worrying
5009 * about a memory-reclaim deadlock.
5011 str
= kmalloc(len
, GFP_KERNEL
);
5016 result
= scnprintf(str
, len
, "Linux NFSv4.0 %s/%s %s",
5018 rpc_peeraddr2str(clp
->cl_rpcclient
, RPC_DISPLAY_ADDR
),
5019 rpc_peeraddr2str(clp
->cl_rpcclient
, RPC_DISPLAY_PROTO
));
5022 /* Did something change? */
5023 if (result
>= len
) {
5030 clp
->cl_owner_id
= str
;
5035 nfs4_init_uniquifier_client_string(struct nfs_client
*clp
)
5041 len
= 10 + 10 + 1 + 10 + 1 +
5042 strlen(nfs4_client_id_uniquifier
) + 1 +
5043 strlen(clp
->cl_rpcclient
->cl_nodename
) + 1;
5045 if (len
> NFS4_OPAQUE_LIMIT
+ 1)
5049 * Since this string is allocated at mount time, and held until the
5050 * nfs_client is destroyed, we can use GFP_KERNEL here w/o worrying
5051 * about a memory-reclaim deadlock.
5053 str
= kmalloc(len
, GFP_KERNEL
);
5057 result
= scnprintf(str
, len
, "Linux NFSv%u.%u %s/%s",
5058 clp
->rpc_ops
->version
, clp
->cl_minorversion
,
5059 nfs4_client_id_uniquifier
,
5060 clp
->cl_rpcclient
->cl_nodename
);
5061 if (result
>= len
) {
5065 clp
->cl_owner_id
= str
;
5070 nfs4_init_uniform_client_string(struct nfs_client
*clp
)
5076 if (clp
->cl_owner_id
!= NULL
)
5079 if (nfs4_client_id_uniquifier
[0] != '\0')
5080 return nfs4_init_uniquifier_client_string(clp
);
5082 len
= 10 + 10 + 1 + 10 + 1 +
5083 strlen(clp
->cl_rpcclient
->cl_nodename
) + 1;
5085 if (len
> NFS4_OPAQUE_LIMIT
+ 1)
5089 * Since this string is allocated at mount time, and held until the
5090 * nfs_client is destroyed, we can use GFP_KERNEL here w/o worrying
5091 * about a memory-reclaim deadlock.
5093 str
= kmalloc(len
, GFP_KERNEL
);
5097 result
= scnprintf(str
, len
, "Linux NFSv%u.%u %s",
5098 clp
->rpc_ops
->version
, clp
->cl_minorversion
,
5099 clp
->cl_rpcclient
->cl_nodename
);
5100 if (result
>= len
) {
5104 clp
->cl_owner_id
= str
;
5109 * nfs4_callback_up_net() starts only "tcp" and "tcp6" callback
5110 * services. Advertise one based on the address family of the
5114 nfs4_init_callback_netid(const struct nfs_client
*clp
, char *buf
, size_t len
)
5116 if (strchr(clp
->cl_ipaddr
, ':') != NULL
)
5117 return scnprintf(buf
, len
, "tcp6");
5119 return scnprintf(buf
, len
, "tcp");
5122 static void nfs4_setclientid_done(struct rpc_task
*task
, void *calldata
)
5124 struct nfs4_setclientid
*sc
= calldata
;
5126 if (task
->tk_status
== 0)
5127 sc
->sc_cred
= get_rpccred(task
->tk_rqstp
->rq_cred
);
5130 static const struct rpc_call_ops nfs4_setclientid_ops
= {
5131 .rpc_call_done
= nfs4_setclientid_done
,
5135 * nfs4_proc_setclientid - Negotiate client ID
5136 * @clp: state data structure
5137 * @program: RPC program for NFSv4 callback service
5138 * @port: IP port number for NFS4 callback service
5139 * @cred: RPC credential to use for this call
5140 * @res: where to place the result
5142 * Returns zero, a negative errno, or a negative NFS4ERR status code.
5144 int nfs4_proc_setclientid(struct nfs_client
*clp
, u32 program
,
5145 unsigned short port
, struct rpc_cred
*cred
,
5146 struct nfs4_setclientid_res
*res
)
5148 nfs4_verifier sc_verifier
;
5149 struct nfs4_setclientid setclientid
= {
5150 .sc_verifier
= &sc_verifier
,
5154 struct rpc_message msg
= {
5155 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETCLIENTID
],
5156 .rpc_argp
= &setclientid
,
5160 struct rpc_task
*task
;
5161 struct rpc_task_setup task_setup_data
= {
5162 .rpc_client
= clp
->cl_rpcclient
,
5163 .rpc_message
= &msg
,
5164 .callback_ops
= &nfs4_setclientid_ops
,
5165 .callback_data
= &setclientid
,
5166 .flags
= RPC_TASK_TIMEOUT
,
5170 /* nfs_client_id4 */
5171 nfs4_init_boot_verifier(clp
, &sc_verifier
);
5173 if (test_bit(NFS_CS_MIGRATION
, &clp
->cl_flags
))
5174 status
= nfs4_init_uniform_client_string(clp
);
5176 status
= nfs4_init_nonuniform_client_string(clp
);
5182 setclientid
.sc_netid_len
=
5183 nfs4_init_callback_netid(clp
,
5184 setclientid
.sc_netid
,
5185 sizeof(setclientid
.sc_netid
));
5186 setclientid
.sc_uaddr_len
= scnprintf(setclientid
.sc_uaddr
,
5187 sizeof(setclientid
.sc_uaddr
), "%s.%u.%u",
5188 clp
->cl_ipaddr
, port
>> 8, port
& 255);
5190 dprintk("NFS call setclientid auth=%s, '%s'\n",
5191 clp
->cl_rpcclient
->cl_auth
->au_ops
->au_name
,
5193 task
= rpc_run_task(&task_setup_data
);
5195 status
= PTR_ERR(task
);
5198 status
= task
->tk_status
;
5199 if (setclientid
.sc_cred
) {
5200 clp
->cl_acceptor
= rpcauth_stringify_acceptor(setclientid
.sc_cred
);
5201 put_rpccred(setclientid
.sc_cred
);
5205 trace_nfs4_setclientid(clp
, status
);
5206 dprintk("NFS reply setclientid: %d\n", status
);
5211 * nfs4_proc_setclientid_confirm - Confirm client ID
5212 * @clp: state data structure
5213 * @res: result of a previous SETCLIENTID
5214 * @cred: RPC credential to use for this call
5216 * Returns zero, a negative errno, or a negative NFS4ERR status code.
5218 int nfs4_proc_setclientid_confirm(struct nfs_client
*clp
,
5219 struct nfs4_setclientid_res
*arg
,
5220 struct rpc_cred
*cred
)
5222 struct rpc_message msg
= {
5223 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETCLIENTID_CONFIRM
],
5229 dprintk("NFS call setclientid_confirm auth=%s, (client ID %llx)\n",
5230 clp
->cl_rpcclient
->cl_auth
->au_ops
->au_name
,
5232 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
5233 trace_nfs4_setclientid_confirm(clp
, status
);
5234 dprintk("NFS reply setclientid_confirm: %d\n", status
);
5238 struct nfs4_delegreturndata
{
5239 struct nfs4_delegreturnargs args
;
5240 struct nfs4_delegreturnres res
;
5242 nfs4_stateid stateid
;
5243 unsigned long timestamp
;
5244 struct nfs_fattr fattr
;
5246 struct inode
*inode
;
5251 static void nfs4_delegreturn_done(struct rpc_task
*task
, void *calldata
)
5253 struct nfs4_delegreturndata
*data
= calldata
;
5255 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
5258 trace_nfs4_delegreturn_exit(&data
->args
, &data
->res
, task
->tk_status
);
5259 switch (task
->tk_status
) {
5261 renew_lease(data
->res
.server
, data
->timestamp
);
5262 case -NFS4ERR_ADMIN_REVOKED
:
5263 case -NFS4ERR_DELEG_REVOKED
:
5264 case -NFS4ERR_BAD_STATEID
:
5265 case -NFS4ERR_OLD_STATEID
:
5266 case -NFS4ERR_STALE_STATEID
:
5267 case -NFS4ERR_EXPIRED
:
5268 task
->tk_status
= 0;
5270 pnfs_roc_set_barrier(data
->inode
, data
->roc_barrier
);
5273 if (nfs4_async_handle_error(task
, data
->res
.server
,
5274 NULL
, NULL
) == -EAGAIN
) {
5275 rpc_restart_call_prepare(task
);
5279 data
->rpc_status
= task
->tk_status
;
5282 static void nfs4_delegreturn_release(void *calldata
)
5284 struct nfs4_delegreturndata
*data
= calldata
;
5285 struct inode
*inode
= data
->inode
;
5289 pnfs_roc_release(inode
);
5290 nfs_iput_and_deactive(inode
);
5295 static void nfs4_delegreturn_prepare(struct rpc_task
*task
, void *data
)
5297 struct nfs4_delegreturndata
*d_data
;
5299 d_data
= (struct nfs4_delegreturndata
*)data
;
5302 pnfs_roc_get_barrier(d_data
->inode
, &d_data
->roc_barrier
);
5304 nfs4_setup_sequence(d_data
->res
.server
,
5305 &d_data
->args
.seq_args
,
5306 &d_data
->res
.seq_res
,
5310 static const struct rpc_call_ops nfs4_delegreturn_ops
= {
5311 .rpc_call_prepare
= nfs4_delegreturn_prepare
,
5312 .rpc_call_done
= nfs4_delegreturn_done
,
5313 .rpc_release
= nfs4_delegreturn_release
,
5316 static int _nfs4_proc_delegreturn(struct inode
*inode
, struct rpc_cred
*cred
, const nfs4_stateid
*stateid
, int issync
)
5318 struct nfs4_delegreturndata
*data
;
5319 struct nfs_server
*server
= NFS_SERVER(inode
);
5320 struct rpc_task
*task
;
5321 struct rpc_message msg
= {
5322 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DELEGRETURN
],
5325 struct rpc_task_setup task_setup_data
= {
5326 .rpc_client
= server
->client
,
5327 .rpc_message
= &msg
,
5328 .callback_ops
= &nfs4_delegreturn_ops
,
5329 .flags
= RPC_TASK_ASYNC
,
5333 data
= kzalloc(sizeof(*data
), GFP_NOFS
);
5336 nfs4_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
5337 data
->args
.fhandle
= &data
->fh
;
5338 data
->args
.stateid
= &data
->stateid
;
5339 data
->args
.bitmask
= server
->cache_consistency_bitmask
;
5340 nfs_copy_fh(&data
->fh
, NFS_FH(inode
));
5341 nfs4_stateid_copy(&data
->stateid
, stateid
);
5342 data
->res
.fattr
= &data
->fattr
;
5343 data
->res
.server
= server
;
5344 nfs_fattr_init(data
->res
.fattr
);
5345 data
->timestamp
= jiffies
;
5346 data
->rpc_status
= 0;
5347 data
->inode
= nfs_igrab_and_active(inode
);
5349 data
->roc
= nfs4_roc(inode
);
5351 task_setup_data
.callback_data
= data
;
5352 msg
.rpc_argp
= &data
->args
;
5353 msg
.rpc_resp
= &data
->res
;
5354 task
= rpc_run_task(&task_setup_data
);
5356 return PTR_ERR(task
);
5359 status
= nfs4_wait_for_completion_rpc_task(task
);
5362 status
= data
->rpc_status
;
5364 nfs_post_op_update_inode_force_wcc(inode
, &data
->fattr
);
5366 nfs_refresh_inode(inode
, &data
->fattr
);
5372 int nfs4_proc_delegreturn(struct inode
*inode
, struct rpc_cred
*cred
, const nfs4_stateid
*stateid
, int issync
)
5374 struct nfs_server
*server
= NFS_SERVER(inode
);
5375 struct nfs4_exception exception
= { };
5378 err
= _nfs4_proc_delegreturn(inode
, cred
, stateid
, issync
);
5379 trace_nfs4_delegreturn(inode
, err
);
5381 case -NFS4ERR_STALE_STATEID
:
5382 case -NFS4ERR_EXPIRED
:
5386 err
= nfs4_handle_exception(server
, err
, &exception
);
5387 } while (exception
.retry
);
5391 #define NFS4_LOCK_MINTIMEOUT (1 * HZ)
5392 #define NFS4_LOCK_MAXTIMEOUT (30 * HZ)
5395 * sleep, with exponential backoff, and retry the LOCK operation.
5397 static unsigned long
5398 nfs4_set_lock_task_retry(unsigned long timeout
)
5400 freezable_schedule_timeout_killable_unsafe(timeout
);
5402 if (timeout
> NFS4_LOCK_MAXTIMEOUT
)
5403 return NFS4_LOCK_MAXTIMEOUT
;
5407 static int _nfs4_proc_getlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
5409 struct inode
*inode
= state
->inode
;
5410 struct nfs_server
*server
= NFS_SERVER(inode
);
5411 struct nfs_client
*clp
= server
->nfs_client
;
5412 struct nfs_lockt_args arg
= {
5413 .fh
= NFS_FH(inode
),
5416 struct nfs_lockt_res res
= {
5419 struct rpc_message msg
= {
5420 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCKT
],
5423 .rpc_cred
= state
->owner
->so_cred
,
5425 struct nfs4_lock_state
*lsp
;
5428 arg
.lock_owner
.clientid
= clp
->cl_clientid
;
5429 status
= nfs4_set_lock_state(state
, request
);
5432 lsp
= request
->fl_u
.nfs4_fl
.owner
;
5433 arg
.lock_owner
.id
= lsp
->ls_seqid
.owner_id
;
5434 arg
.lock_owner
.s_dev
= server
->s_dev
;
5435 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
5438 request
->fl_type
= F_UNLCK
;
5440 case -NFS4ERR_DENIED
:
5443 request
->fl_ops
->fl_release_private(request
);
5444 request
->fl_ops
= NULL
;
5449 static int nfs4_proc_getlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
5451 struct nfs4_exception exception
= { };
5455 err
= _nfs4_proc_getlk(state
, cmd
, request
);
5456 trace_nfs4_get_lock(request
, state
, cmd
, err
);
5457 err
= nfs4_handle_exception(NFS_SERVER(state
->inode
), err
,
5459 } while (exception
.retry
);
5463 static int do_vfs_lock(struct inode
*inode
, struct file_lock
*fl
)
5466 switch (fl
->fl_flags
& (FL_POSIX
|FL_FLOCK
)) {
5468 res
= posix_lock_inode_wait(inode
, fl
);
5471 res
= flock_lock_inode_wait(inode
, fl
);
5479 struct nfs4_unlockdata
{
5480 struct nfs_locku_args arg
;
5481 struct nfs_locku_res res
;
5482 struct nfs4_lock_state
*lsp
;
5483 struct nfs_open_context
*ctx
;
5484 struct file_lock fl
;
5485 const struct nfs_server
*server
;
5486 unsigned long timestamp
;
5489 static struct nfs4_unlockdata
*nfs4_alloc_unlockdata(struct file_lock
*fl
,
5490 struct nfs_open_context
*ctx
,
5491 struct nfs4_lock_state
*lsp
,
5492 struct nfs_seqid
*seqid
)
5494 struct nfs4_unlockdata
*p
;
5495 struct inode
*inode
= lsp
->ls_state
->inode
;
5497 p
= kzalloc(sizeof(*p
), GFP_NOFS
);
5500 p
->arg
.fh
= NFS_FH(inode
);
5502 p
->arg
.seqid
= seqid
;
5503 p
->res
.seqid
= seqid
;
5505 atomic_inc(&lsp
->ls_count
);
5506 /* Ensure we don't close file until we're done freeing locks! */
5507 p
->ctx
= get_nfs_open_context(ctx
);
5508 memcpy(&p
->fl
, fl
, sizeof(p
->fl
));
5509 p
->server
= NFS_SERVER(inode
);
5513 static void nfs4_locku_release_calldata(void *data
)
5515 struct nfs4_unlockdata
*calldata
= data
;
5516 nfs_free_seqid(calldata
->arg
.seqid
);
5517 nfs4_put_lock_state(calldata
->lsp
);
5518 put_nfs_open_context(calldata
->ctx
);
5522 static void nfs4_locku_done(struct rpc_task
*task
, void *data
)
5524 struct nfs4_unlockdata
*calldata
= data
;
5526 if (!nfs4_sequence_done(task
, &calldata
->res
.seq_res
))
5528 switch (task
->tk_status
) {
5530 renew_lease(calldata
->server
, calldata
->timestamp
);
5531 do_vfs_lock(calldata
->lsp
->ls_state
->inode
, &calldata
->fl
);
5532 if (nfs4_update_lock_stateid(calldata
->lsp
,
5533 &calldata
->res
.stateid
))
5535 case -NFS4ERR_BAD_STATEID
:
5536 case -NFS4ERR_OLD_STATEID
:
5537 case -NFS4ERR_STALE_STATEID
:
5538 case -NFS4ERR_EXPIRED
:
5539 if (!nfs4_stateid_match(&calldata
->arg
.stateid
,
5540 &calldata
->lsp
->ls_stateid
))
5541 rpc_restart_call_prepare(task
);
5544 if (nfs4_async_handle_error(task
, calldata
->server
,
5545 NULL
, NULL
) == -EAGAIN
)
5546 rpc_restart_call_prepare(task
);
5548 nfs_release_seqid(calldata
->arg
.seqid
);
5551 static void nfs4_locku_prepare(struct rpc_task
*task
, void *data
)
5553 struct nfs4_unlockdata
*calldata
= data
;
5555 if (nfs_wait_on_sequence(calldata
->arg
.seqid
, task
) != 0)
5557 nfs4_stateid_copy(&calldata
->arg
.stateid
, &calldata
->lsp
->ls_stateid
);
5558 if (test_bit(NFS_LOCK_INITIALIZED
, &calldata
->lsp
->ls_flags
) == 0) {
5559 /* Note: exit _without_ running nfs4_locku_done */
5562 calldata
->timestamp
= jiffies
;
5563 if (nfs4_setup_sequence(calldata
->server
,
5564 &calldata
->arg
.seq_args
,
5565 &calldata
->res
.seq_res
,
5567 nfs_release_seqid(calldata
->arg
.seqid
);
5570 task
->tk_action
= NULL
;
5572 nfs4_sequence_done(task
, &calldata
->res
.seq_res
);
5575 static const struct rpc_call_ops nfs4_locku_ops
= {
5576 .rpc_call_prepare
= nfs4_locku_prepare
,
5577 .rpc_call_done
= nfs4_locku_done
,
5578 .rpc_release
= nfs4_locku_release_calldata
,
5581 static struct rpc_task
*nfs4_do_unlck(struct file_lock
*fl
,
5582 struct nfs_open_context
*ctx
,
5583 struct nfs4_lock_state
*lsp
,
5584 struct nfs_seqid
*seqid
)
5586 struct nfs4_unlockdata
*data
;
5587 struct rpc_message msg
= {
5588 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCKU
],
5589 .rpc_cred
= ctx
->cred
,
5591 struct rpc_task_setup task_setup_data
= {
5592 .rpc_client
= NFS_CLIENT(lsp
->ls_state
->inode
),
5593 .rpc_message
= &msg
,
5594 .callback_ops
= &nfs4_locku_ops
,
5595 .workqueue
= nfsiod_workqueue
,
5596 .flags
= RPC_TASK_ASYNC
,
5599 nfs4_state_protect(NFS_SERVER(lsp
->ls_state
->inode
)->nfs_client
,
5600 NFS_SP4_MACH_CRED_CLEANUP
, &task_setup_data
.rpc_client
, &msg
);
5602 /* Ensure this is an unlock - when canceling a lock, the
5603 * canceled lock is passed in, and it won't be an unlock.
5605 fl
->fl_type
= F_UNLCK
;
5607 data
= nfs4_alloc_unlockdata(fl
, ctx
, lsp
, seqid
);
5609 nfs_free_seqid(seqid
);
5610 return ERR_PTR(-ENOMEM
);
5613 nfs4_init_sequence(&data
->arg
.seq_args
, &data
->res
.seq_res
, 1);
5614 msg
.rpc_argp
= &data
->arg
;
5615 msg
.rpc_resp
= &data
->res
;
5616 task_setup_data
.callback_data
= data
;
5617 return rpc_run_task(&task_setup_data
);
5620 static int nfs4_proc_unlck(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
5622 struct inode
*inode
= state
->inode
;
5623 struct nfs4_state_owner
*sp
= state
->owner
;
5624 struct nfs_inode
*nfsi
= NFS_I(inode
);
5625 struct nfs_seqid
*seqid
;
5626 struct nfs4_lock_state
*lsp
;
5627 struct rpc_task
*task
;
5628 struct nfs_seqid
*(*alloc_seqid
)(struct nfs_seqid_counter
*, gfp_t
);
5630 unsigned char fl_flags
= request
->fl_flags
;
5632 status
= nfs4_set_lock_state(state
, request
);
5633 /* Unlock _before_ we do the RPC call */
5634 request
->fl_flags
|= FL_EXISTS
;
5635 /* Exclude nfs_delegation_claim_locks() */
5636 mutex_lock(&sp
->so_delegreturn_mutex
);
5637 /* Exclude nfs4_reclaim_open_stateid() - note nesting! */
5638 down_read(&nfsi
->rwsem
);
5639 if (do_vfs_lock(inode
, request
) == -ENOENT
) {
5640 up_read(&nfsi
->rwsem
);
5641 mutex_unlock(&sp
->so_delegreturn_mutex
);
5644 up_read(&nfsi
->rwsem
);
5645 mutex_unlock(&sp
->so_delegreturn_mutex
);
5648 /* Is this a delegated lock? */
5649 lsp
= request
->fl_u
.nfs4_fl
.owner
;
5650 if (test_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
) == 0)
5652 alloc_seqid
= NFS_SERVER(inode
)->nfs_client
->cl_mvops
->alloc_seqid
;
5653 seqid
= alloc_seqid(&lsp
->ls_seqid
, GFP_KERNEL
);
5657 task
= nfs4_do_unlck(request
, nfs_file_open_context(request
->fl_file
), lsp
, seqid
);
5658 status
= PTR_ERR(task
);
5661 status
= nfs4_wait_for_completion_rpc_task(task
);
5664 request
->fl_flags
= fl_flags
;
5665 trace_nfs4_unlock(request
, state
, F_SETLK
, status
);
5669 struct nfs4_lockdata
{
5670 struct nfs_lock_args arg
;
5671 struct nfs_lock_res res
;
5672 struct nfs4_lock_state
*lsp
;
5673 struct nfs_open_context
*ctx
;
5674 struct file_lock fl
;
5675 unsigned long timestamp
;
5678 struct nfs_server
*server
;
5681 static struct nfs4_lockdata
*nfs4_alloc_lockdata(struct file_lock
*fl
,
5682 struct nfs_open_context
*ctx
, struct nfs4_lock_state
*lsp
,
5685 struct nfs4_lockdata
*p
;
5686 struct inode
*inode
= lsp
->ls_state
->inode
;
5687 struct nfs_server
*server
= NFS_SERVER(inode
);
5688 struct nfs_seqid
*(*alloc_seqid
)(struct nfs_seqid_counter
*, gfp_t
);
5690 p
= kzalloc(sizeof(*p
), gfp_mask
);
5694 p
->arg
.fh
= NFS_FH(inode
);
5696 p
->arg
.open_seqid
= nfs_alloc_seqid(&lsp
->ls_state
->owner
->so_seqid
, gfp_mask
);
5697 if (IS_ERR(p
->arg
.open_seqid
))
5699 alloc_seqid
= server
->nfs_client
->cl_mvops
->alloc_seqid
;
5700 p
->arg
.lock_seqid
= alloc_seqid(&lsp
->ls_seqid
, gfp_mask
);
5701 if (IS_ERR(p
->arg
.lock_seqid
))
5702 goto out_free_seqid
;
5703 p
->arg
.lock_owner
.clientid
= server
->nfs_client
->cl_clientid
;
5704 p
->arg
.lock_owner
.id
= lsp
->ls_seqid
.owner_id
;
5705 p
->arg
.lock_owner
.s_dev
= server
->s_dev
;
5706 p
->res
.lock_seqid
= p
->arg
.lock_seqid
;
5709 atomic_inc(&lsp
->ls_count
);
5710 p
->ctx
= get_nfs_open_context(ctx
);
5711 get_file(fl
->fl_file
);
5712 memcpy(&p
->fl
, fl
, sizeof(p
->fl
));
5715 nfs_free_seqid(p
->arg
.open_seqid
);
5721 static void nfs4_lock_prepare(struct rpc_task
*task
, void *calldata
)
5723 struct nfs4_lockdata
*data
= calldata
;
5724 struct nfs4_state
*state
= data
->lsp
->ls_state
;
5726 dprintk("%s: begin!\n", __func__
);
5727 if (nfs_wait_on_sequence(data
->arg
.lock_seqid
, task
) != 0)
5729 /* Do we need to do an open_to_lock_owner? */
5730 if (!test_bit(NFS_LOCK_INITIALIZED
, &data
->lsp
->ls_flags
)) {
5731 if (nfs_wait_on_sequence(data
->arg
.open_seqid
, task
) != 0) {
5732 goto out_release_lock_seqid
;
5734 nfs4_stateid_copy(&data
->arg
.open_stateid
,
5735 &state
->open_stateid
);
5736 data
->arg
.new_lock_owner
= 1;
5737 data
->res
.open_seqid
= data
->arg
.open_seqid
;
5739 data
->arg
.new_lock_owner
= 0;
5740 nfs4_stateid_copy(&data
->arg
.lock_stateid
,
5741 &data
->lsp
->ls_stateid
);
5743 if (!nfs4_valid_open_stateid(state
)) {
5744 data
->rpc_status
= -EBADF
;
5745 task
->tk_action
= NULL
;
5746 goto out_release_open_seqid
;
5748 data
->timestamp
= jiffies
;
5749 if (nfs4_setup_sequence(data
->server
,
5750 &data
->arg
.seq_args
,
5754 out_release_open_seqid
:
5755 nfs_release_seqid(data
->arg
.open_seqid
);
5756 out_release_lock_seqid
:
5757 nfs_release_seqid(data
->arg
.lock_seqid
);
5759 nfs4_sequence_done(task
, &data
->res
.seq_res
);
5760 dprintk("%s: done!, ret = %d\n", __func__
, data
->rpc_status
);
5763 static void nfs4_lock_done(struct rpc_task
*task
, void *calldata
)
5765 struct nfs4_lockdata
*data
= calldata
;
5766 struct nfs4_lock_state
*lsp
= data
->lsp
;
5768 dprintk("%s: begin!\n", __func__
);
5770 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
5773 data
->rpc_status
= task
->tk_status
;
5774 switch (task
->tk_status
) {
5776 renew_lease(NFS_SERVER(d_inode(data
->ctx
->dentry
)),
5778 if (data
->arg
.new_lock
) {
5779 data
->fl
.fl_flags
&= ~(FL_SLEEP
| FL_ACCESS
);
5780 if (do_vfs_lock(lsp
->ls_state
->inode
, &data
->fl
) < 0) {
5781 rpc_restart_call_prepare(task
);
5785 if (data
->arg
.new_lock_owner
!= 0) {
5786 nfs_confirm_seqid(&lsp
->ls_seqid
, 0);
5787 nfs4_stateid_copy(&lsp
->ls_stateid
, &data
->res
.stateid
);
5788 set_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
);
5789 } else if (!nfs4_update_lock_stateid(lsp
, &data
->res
.stateid
))
5790 rpc_restart_call_prepare(task
);
5792 case -NFS4ERR_BAD_STATEID
:
5793 case -NFS4ERR_OLD_STATEID
:
5794 case -NFS4ERR_STALE_STATEID
:
5795 case -NFS4ERR_EXPIRED
:
5796 if (data
->arg
.new_lock_owner
!= 0) {
5797 if (!nfs4_stateid_match(&data
->arg
.open_stateid
,
5798 &lsp
->ls_state
->open_stateid
))
5799 rpc_restart_call_prepare(task
);
5800 } else if (!nfs4_stateid_match(&data
->arg
.lock_stateid
,
5802 rpc_restart_call_prepare(task
);
5804 dprintk("%s: done, ret = %d!\n", __func__
, data
->rpc_status
);
5807 static void nfs4_lock_release(void *calldata
)
5809 struct nfs4_lockdata
*data
= calldata
;
5811 dprintk("%s: begin!\n", __func__
);
5812 nfs_free_seqid(data
->arg
.open_seqid
);
5813 if (data
->cancelled
!= 0) {
5814 struct rpc_task
*task
;
5815 task
= nfs4_do_unlck(&data
->fl
, data
->ctx
, data
->lsp
,
5816 data
->arg
.lock_seqid
);
5818 rpc_put_task_async(task
);
5819 dprintk("%s: cancelling lock!\n", __func__
);
5821 nfs_free_seqid(data
->arg
.lock_seqid
);
5822 nfs4_put_lock_state(data
->lsp
);
5823 put_nfs_open_context(data
->ctx
);
5824 fput(data
->fl
.fl_file
);
5826 dprintk("%s: done!\n", __func__
);
5829 static const struct rpc_call_ops nfs4_lock_ops
= {
5830 .rpc_call_prepare
= nfs4_lock_prepare
,
5831 .rpc_call_done
= nfs4_lock_done
,
5832 .rpc_release
= nfs4_lock_release
,
5835 static void nfs4_handle_setlk_error(struct nfs_server
*server
, struct nfs4_lock_state
*lsp
, int new_lock_owner
, int error
)
5838 case -NFS4ERR_ADMIN_REVOKED
:
5839 case -NFS4ERR_BAD_STATEID
:
5840 lsp
->ls_seqid
.flags
&= ~NFS_SEQID_CONFIRMED
;
5841 if (new_lock_owner
!= 0 ||
5842 test_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
) != 0)
5843 nfs4_schedule_stateid_recovery(server
, lsp
->ls_state
);
5845 case -NFS4ERR_STALE_STATEID
:
5846 lsp
->ls_seqid
.flags
&= ~NFS_SEQID_CONFIRMED
;
5847 case -NFS4ERR_EXPIRED
:
5848 nfs4_schedule_lease_recovery(server
->nfs_client
);
5852 static int _nfs4_do_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*fl
, int recovery_type
)
5854 struct nfs4_lockdata
*data
;
5855 struct rpc_task
*task
;
5856 struct rpc_message msg
= {
5857 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCK
],
5858 .rpc_cred
= state
->owner
->so_cred
,
5860 struct rpc_task_setup task_setup_data
= {
5861 .rpc_client
= NFS_CLIENT(state
->inode
),
5862 .rpc_message
= &msg
,
5863 .callback_ops
= &nfs4_lock_ops
,
5864 .workqueue
= nfsiod_workqueue
,
5865 .flags
= RPC_TASK_ASYNC
,
5869 dprintk("%s: begin!\n", __func__
);
5870 data
= nfs4_alloc_lockdata(fl
, nfs_file_open_context(fl
->fl_file
),
5871 fl
->fl_u
.nfs4_fl
.owner
,
5872 recovery_type
== NFS_LOCK_NEW
? GFP_KERNEL
: GFP_NOFS
);
5876 data
->arg
.block
= 1;
5877 nfs4_init_sequence(&data
->arg
.seq_args
, &data
->res
.seq_res
, 1);
5878 msg
.rpc_argp
= &data
->arg
;
5879 msg
.rpc_resp
= &data
->res
;
5880 task_setup_data
.callback_data
= data
;
5881 if (recovery_type
> NFS_LOCK_NEW
) {
5882 if (recovery_type
== NFS_LOCK_RECLAIM
)
5883 data
->arg
.reclaim
= NFS_LOCK_RECLAIM
;
5884 nfs4_set_sequence_privileged(&data
->arg
.seq_args
);
5886 data
->arg
.new_lock
= 1;
5887 task
= rpc_run_task(&task_setup_data
);
5889 return PTR_ERR(task
);
5890 ret
= nfs4_wait_for_completion_rpc_task(task
);
5892 ret
= data
->rpc_status
;
5894 nfs4_handle_setlk_error(data
->server
, data
->lsp
,
5895 data
->arg
.new_lock_owner
, ret
);
5897 data
->cancelled
= 1;
5899 dprintk("%s: done, ret = %d!\n", __func__
, ret
);
5903 static int nfs4_lock_reclaim(struct nfs4_state
*state
, struct file_lock
*request
)
5905 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
5906 struct nfs4_exception exception
= {
5907 .inode
= state
->inode
,
5912 /* Cache the lock if possible... */
5913 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) != 0)
5915 err
= _nfs4_do_setlk(state
, F_SETLK
, request
, NFS_LOCK_RECLAIM
);
5916 trace_nfs4_lock_reclaim(request
, state
, F_SETLK
, err
);
5917 if (err
!= -NFS4ERR_DELAY
)
5919 nfs4_handle_exception(server
, err
, &exception
);
5920 } while (exception
.retry
);
5924 static int nfs4_lock_expired(struct nfs4_state
*state
, struct file_lock
*request
)
5926 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
5927 struct nfs4_exception exception
= {
5928 .inode
= state
->inode
,
5932 err
= nfs4_set_lock_state(state
, request
);
5935 if (!recover_lost_locks
) {
5936 set_bit(NFS_LOCK_LOST
, &request
->fl_u
.nfs4_fl
.owner
->ls_flags
);
5940 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) != 0)
5942 err
= _nfs4_do_setlk(state
, F_SETLK
, request
, NFS_LOCK_EXPIRED
);
5943 trace_nfs4_lock_expired(request
, state
, F_SETLK
, err
);
5947 case -NFS4ERR_GRACE
:
5948 case -NFS4ERR_DELAY
:
5949 nfs4_handle_exception(server
, err
, &exception
);
5952 } while (exception
.retry
);
5957 #if defined(CONFIG_NFS_V4_1)
5959 * nfs41_check_expired_locks - possibly free a lock stateid
5961 * @state: NFSv4 state for an inode
5963 * Returns NFS_OK if recovery for this stateid is now finished.
5964 * Otherwise a negative NFS4ERR value is returned.
5966 static int nfs41_check_expired_locks(struct nfs4_state
*state
)
5968 int status
, ret
= -NFS4ERR_BAD_STATEID
;
5969 struct nfs4_lock_state
*lsp
;
5970 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
5972 list_for_each_entry(lsp
, &state
->lock_states
, ls_locks
) {
5973 if (test_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
)) {
5974 struct rpc_cred
*cred
= lsp
->ls_state
->owner
->so_cred
;
5976 status
= nfs41_test_stateid(server
,
5979 trace_nfs4_test_lock_stateid(state
, lsp
, status
);
5980 if (status
!= NFS_OK
) {
5981 /* Free the stateid unless the server
5982 * informs us the stateid is unrecognized. */
5983 if (status
!= -NFS4ERR_BAD_STATEID
)
5984 nfs41_free_stateid(server
,
5987 clear_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
);
5996 static int nfs41_lock_expired(struct nfs4_state
*state
, struct file_lock
*request
)
5998 int status
= NFS_OK
;
6000 if (test_bit(LK_STATE_IN_USE
, &state
->flags
))
6001 status
= nfs41_check_expired_locks(state
);
6002 if (status
!= NFS_OK
)
6003 status
= nfs4_lock_expired(state
, request
);
6008 static int _nfs4_proc_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
6010 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
6011 unsigned char fl_flags
= request
->fl_flags
;
6012 int status
= -ENOLCK
;
6014 if ((fl_flags
& FL_POSIX
) &&
6015 !test_bit(NFS_STATE_POSIX_LOCKS
, &state
->flags
))
6017 /* Is this a delegated open? */
6018 status
= nfs4_set_lock_state(state
, request
);
6021 request
->fl_flags
|= FL_ACCESS
;
6022 status
= do_vfs_lock(state
->inode
, request
);
6025 down_read(&nfsi
->rwsem
);
6026 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
)) {
6027 /* Yes: cache locks! */
6028 /* ...but avoid races with delegation recall... */
6029 request
->fl_flags
= fl_flags
& ~FL_SLEEP
;
6030 status
= do_vfs_lock(state
->inode
, request
);
6031 up_read(&nfsi
->rwsem
);
6034 up_read(&nfsi
->rwsem
);
6035 status
= _nfs4_do_setlk(state
, cmd
, request
, NFS_LOCK_NEW
);
6037 request
->fl_flags
= fl_flags
;
6041 static int nfs4_proc_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
6043 struct nfs4_exception exception
= {
6045 .inode
= state
->inode
,
6050 err
= _nfs4_proc_setlk(state
, cmd
, request
);
6051 trace_nfs4_set_lock(request
, state
, cmd
, err
);
6052 if (err
== -NFS4ERR_DENIED
)
6054 err
= nfs4_handle_exception(NFS_SERVER(state
->inode
),
6056 } while (exception
.retry
);
6061 nfs4_proc_lock(struct file
*filp
, int cmd
, struct file_lock
*request
)
6063 struct nfs_open_context
*ctx
;
6064 struct nfs4_state
*state
;
6065 unsigned long timeout
= NFS4_LOCK_MINTIMEOUT
;
6068 /* verify open state */
6069 ctx
= nfs_file_open_context(filp
);
6072 if (request
->fl_start
< 0 || request
->fl_end
< 0)
6075 if (IS_GETLK(cmd
)) {
6077 return nfs4_proc_getlk(state
, F_GETLK
, request
);
6081 if (!(IS_SETLK(cmd
) || IS_SETLKW(cmd
)))
6084 if (request
->fl_type
== F_UNLCK
) {
6086 return nfs4_proc_unlck(state
, cmd
, request
);
6093 * Don't rely on the VFS having checked the file open mode,
6094 * since it won't do this for flock() locks.
6096 switch (request
->fl_type
) {
6098 if (!(filp
->f_mode
& FMODE_READ
))
6102 if (!(filp
->f_mode
& FMODE_WRITE
))
6107 status
= nfs4_proc_setlk(state
, cmd
, request
);
6108 if ((status
!= -EAGAIN
) || IS_SETLK(cmd
))
6110 timeout
= nfs4_set_lock_task_retry(timeout
);
6111 status
= -ERESTARTSYS
;
6114 } while(status
< 0);
6118 int nfs4_lock_delegation_recall(struct file_lock
*fl
, struct nfs4_state
*state
, const nfs4_stateid
*stateid
)
6120 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
6123 err
= nfs4_set_lock_state(state
, fl
);
6126 err
= _nfs4_do_setlk(state
, F_SETLK
, fl
, NFS_LOCK_NEW
);
6127 return nfs4_handle_delegation_recall_error(server
, state
, stateid
, err
);
6130 struct nfs_release_lockowner_data
{
6131 struct nfs4_lock_state
*lsp
;
6132 struct nfs_server
*server
;
6133 struct nfs_release_lockowner_args args
;
6134 struct nfs_release_lockowner_res res
;
6135 unsigned long timestamp
;
6138 static void nfs4_release_lockowner_prepare(struct rpc_task
*task
, void *calldata
)
6140 struct nfs_release_lockowner_data
*data
= calldata
;
6141 struct nfs_server
*server
= data
->server
;
6142 nfs40_setup_sequence(server
->nfs_client
->cl_slot_tbl
,
6143 &data
->args
.seq_args
, &data
->res
.seq_res
, task
);
6144 data
->args
.lock_owner
.clientid
= server
->nfs_client
->cl_clientid
;
6145 data
->timestamp
= jiffies
;
6148 static void nfs4_release_lockowner_done(struct rpc_task
*task
, void *calldata
)
6150 struct nfs_release_lockowner_data
*data
= calldata
;
6151 struct nfs_server
*server
= data
->server
;
6153 nfs40_sequence_done(task
, &data
->res
.seq_res
);
6155 switch (task
->tk_status
) {
6157 renew_lease(server
, data
->timestamp
);
6159 case -NFS4ERR_STALE_CLIENTID
:
6160 case -NFS4ERR_EXPIRED
:
6161 nfs4_schedule_lease_recovery(server
->nfs_client
);
6163 case -NFS4ERR_LEASE_MOVED
:
6164 case -NFS4ERR_DELAY
:
6165 if (nfs4_async_handle_error(task
, server
,
6166 NULL
, NULL
) == -EAGAIN
)
6167 rpc_restart_call_prepare(task
);
6171 static void nfs4_release_lockowner_release(void *calldata
)
6173 struct nfs_release_lockowner_data
*data
= calldata
;
6174 nfs4_free_lock_state(data
->server
, data
->lsp
);
6178 static const struct rpc_call_ops nfs4_release_lockowner_ops
= {
6179 .rpc_call_prepare
= nfs4_release_lockowner_prepare
,
6180 .rpc_call_done
= nfs4_release_lockowner_done
,
6181 .rpc_release
= nfs4_release_lockowner_release
,
6185 nfs4_release_lockowner(struct nfs_server
*server
, struct nfs4_lock_state
*lsp
)
6187 struct nfs_release_lockowner_data
*data
;
6188 struct rpc_message msg
= {
6189 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RELEASE_LOCKOWNER
],
6192 if (server
->nfs_client
->cl_mvops
->minor_version
!= 0)
6195 data
= kmalloc(sizeof(*data
), GFP_NOFS
);
6199 data
->server
= server
;
6200 data
->args
.lock_owner
.clientid
= server
->nfs_client
->cl_clientid
;
6201 data
->args
.lock_owner
.id
= lsp
->ls_seqid
.owner_id
;
6202 data
->args
.lock_owner
.s_dev
= server
->s_dev
;
6204 msg
.rpc_argp
= &data
->args
;
6205 msg
.rpc_resp
= &data
->res
;
6206 nfs4_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 0);
6207 rpc_call_async(server
->client
, &msg
, 0, &nfs4_release_lockowner_ops
, data
);
6210 #define XATTR_NAME_NFSV4_ACL "system.nfs4_acl"
6212 static int nfs4_xattr_set_nfs4_acl(struct dentry
*dentry
, const char *key
,
6213 const void *buf
, size_t buflen
,
6214 int flags
, int type
)
6216 if (strcmp(key
, "") != 0)
6219 return nfs4_proc_set_acl(d_inode(dentry
), buf
, buflen
);
6222 static int nfs4_xattr_get_nfs4_acl(struct dentry
*dentry
, const char *key
,
6223 void *buf
, size_t buflen
, int type
)
6225 if (strcmp(key
, "") != 0)
6228 return nfs4_proc_get_acl(d_inode(dentry
), buf
, buflen
);
6231 static size_t nfs4_xattr_list_nfs4_acl(struct dentry
*dentry
, char *list
,
6232 size_t list_len
, const char *name
,
6233 size_t name_len
, int type
)
6235 size_t len
= sizeof(XATTR_NAME_NFSV4_ACL
);
6237 if (!nfs4_server_supports_acls(NFS_SERVER(d_inode(dentry
))))
6240 if (list
&& len
<= list_len
)
6241 memcpy(list
, XATTR_NAME_NFSV4_ACL
, len
);
6245 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
6246 static inline int nfs4_server_supports_labels(struct nfs_server
*server
)
6248 return server
->caps
& NFS_CAP_SECURITY_LABEL
;
6251 static int nfs4_xattr_set_nfs4_label(struct dentry
*dentry
, const char *key
,
6252 const void *buf
, size_t buflen
,
6253 int flags
, int type
)
6255 if (security_ismaclabel(key
))
6256 return nfs4_set_security_label(dentry
, buf
, buflen
);
6261 static int nfs4_xattr_get_nfs4_label(struct dentry
*dentry
, const char *key
,
6262 void *buf
, size_t buflen
, int type
)
6264 if (security_ismaclabel(key
))
6265 return nfs4_get_security_label(d_inode(dentry
), buf
, buflen
);
6269 static size_t nfs4_xattr_list_nfs4_label(struct dentry
*dentry
, char *list
,
6270 size_t list_len
, const char *name
,
6271 size_t name_len
, int type
)
6275 if (nfs_server_capable(d_inode(dentry
), NFS_CAP_SECURITY_LABEL
)) {
6276 len
= security_inode_listsecurity(d_inode(dentry
), NULL
, 0);
6277 if (list
&& len
<= list_len
)
6278 security_inode_listsecurity(d_inode(dentry
), list
, len
);
6283 static const struct xattr_handler nfs4_xattr_nfs4_label_handler
= {
6284 .prefix
= XATTR_SECURITY_PREFIX
,
6285 .list
= nfs4_xattr_list_nfs4_label
,
6286 .get
= nfs4_xattr_get_nfs4_label
,
6287 .set
= nfs4_xattr_set_nfs4_label
,
6293 * nfs_fhget will use either the mounted_on_fileid or the fileid
6295 static void nfs_fixup_referral_attributes(struct nfs_fattr
*fattr
)
6297 if (!(((fattr
->valid
& NFS_ATTR_FATTR_MOUNTED_ON_FILEID
) ||
6298 (fattr
->valid
& NFS_ATTR_FATTR_FILEID
)) &&
6299 (fattr
->valid
& NFS_ATTR_FATTR_FSID
) &&
6300 (fattr
->valid
& NFS_ATTR_FATTR_V4_LOCATIONS
)))
6303 fattr
->valid
|= NFS_ATTR_FATTR_TYPE
| NFS_ATTR_FATTR_MODE
|
6304 NFS_ATTR_FATTR_NLINK
| NFS_ATTR_FATTR_V4_REFERRAL
;
6305 fattr
->mode
= S_IFDIR
| S_IRUGO
| S_IXUGO
;
6309 static int _nfs4_proc_fs_locations(struct rpc_clnt
*client
, struct inode
*dir
,
6310 const struct qstr
*name
,
6311 struct nfs4_fs_locations
*fs_locations
,
6314 struct nfs_server
*server
= NFS_SERVER(dir
);
6316 [0] = FATTR4_WORD0_FSID
| FATTR4_WORD0_FS_LOCATIONS
,
6318 struct nfs4_fs_locations_arg args
= {
6319 .dir_fh
= NFS_FH(dir
),
6324 struct nfs4_fs_locations_res res
= {
6325 .fs_locations
= fs_locations
,
6327 struct rpc_message msg
= {
6328 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FS_LOCATIONS
],
6334 dprintk("%s: start\n", __func__
);
6336 /* Ask for the fileid of the absent filesystem if mounted_on_fileid
6337 * is not supported */
6338 if (NFS_SERVER(dir
)->attr_bitmask
[1] & FATTR4_WORD1_MOUNTED_ON_FILEID
)
6339 bitmask
[1] |= FATTR4_WORD1_MOUNTED_ON_FILEID
;
6341 bitmask
[0] |= FATTR4_WORD0_FILEID
;
6343 nfs_fattr_init(&fs_locations
->fattr
);
6344 fs_locations
->server
= server
;
6345 fs_locations
->nlocations
= 0;
6346 status
= nfs4_call_sync(client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
6347 dprintk("%s: returned status = %d\n", __func__
, status
);
6351 int nfs4_proc_fs_locations(struct rpc_clnt
*client
, struct inode
*dir
,
6352 const struct qstr
*name
,
6353 struct nfs4_fs_locations
*fs_locations
,
6356 struct nfs4_exception exception
= { };
6359 err
= _nfs4_proc_fs_locations(client
, dir
, name
,
6360 fs_locations
, page
);
6361 trace_nfs4_get_fs_locations(dir
, name
, err
);
6362 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
6364 } while (exception
.retry
);
6369 * This operation also signals the server that this client is
6370 * performing migration recovery. The server can stop returning
6371 * NFS4ERR_LEASE_MOVED to this client. A RENEW operation is
6372 * appended to this compound to identify the client ID which is
6373 * performing recovery.
6375 static int _nfs40_proc_get_locations(struct inode
*inode
,
6376 struct nfs4_fs_locations
*locations
,
6377 struct page
*page
, struct rpc_cred
*cred
)
6379 struct nfs_server
*server
= NFS_SERVER(inode
);
6380 struct rpc_clnt
*clnt
= server
->client
;
6382 [0] = FATTR4_WORD0_FSID
| FATTR4_WORD0_FS_LOCATIONS
,
6384 struct nfs4_fs_locations_arg args
= {
6385 .clientid
= server
->nfs_client
->cl_clientid
,
6386 .fh
= NFS_FH(inode
),
6389 .migration
= 1, /* skip LOOKUP */
6390 .renew
= 1, /* append RENEW */
6392 struct nfs4_fs_locations_res res
= {
6393 .fs_locations
= locations
,
6397 struct rpc_message msg
= {
6398 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FS_LOCATIONS
],
6403 unsigned long now
= jiffies
;
6406 nfs_fattr_init(&locations
->fattr
);
6407 locations
->server
= server
;
6408 locations
->nlocations
= 0;
6410 nfs4_init_sequence(&args
.seq_args
, &res
.seq_res
, 0);
6411 nfs4_set_sequence_privileged(&args
.seq_args
);
6412 status
= nfs4_call_sync_sequence(clnt
, server
, &msg
,
6413 &args
.seq_args
, &res
.seq_res
);
6417 renew_lease(server
, now
);
6421 #ifdef CONFIG_NFS_V4_1
6424 * This operation also signals the server that this client is
6425 * performing migration recovery. The server can stop asserting
6426 * SEQ4_STATUS_LEASE_MOVED for this client. The client ID
6427 * performing this operation is identified in the SEQUENCE
6428 * operation in this compound.
6430 * When the client supports GETATTR(fs_locations_info), it can
6431 * be plumbed in here.
6433 static int _nfs41_proc_get_locations(struct inode
*inode
,
6434 struct nfs4_fs_locations
*locations
,
6435 struct page
*page
, struct rpc_cred
*cred
)
6437 struct nfs_server
*server
= NFS_SERVER(inode
);
6438 struct rpc_clnt
*clnt
= server
->client
;
6440 [0] = FATTR4_WORD0_FSID
| FATTR4_WORD0_FS_LOCATIONS
,
6442 struct nfs4_fs_locations_arg args
= {
6443 .fh
= NFS_FH(inode
),
6446 .migration
= 1, /* skip LOOKUP */
6448 struct nfs4_fs_locations_res res
= {
6449 .fs_locations
= locations
,
6452 struct rpc_message msg
= {
6453 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FS_LOCATIONS
],
6460 nfs_fattr_init(&locations
->fattr
);
6461 locations
->server
= server
;
6462 locations
->nlocations
= 0;
6464 nfs4_init_sequence(&args
.seq_args
, &res
.seq_res
, 0);
6465 nfs4_set_sequence_privileged(&args
.seq_args
);
6466 status
= nfs4_call_sync_sequence(clnt
, server
, &msg
,
6467 &args
.seq_args
, &res
.seq_res
);
6468 if (status
== NFS4_OK
&&
6469 res
.seq_res
.sr_status_flags
& SEQ4_STATUS_LEASE_MOVED
)
6470 status
= -NFS4ERR_LEASE_MOVED
;
6474 #endif /* CONFIG_NFS_V4_1 */
6477 * nfs4_proc_get_locations - discover locations for a migrated FSID
6478 * @inode: inode on FSID that is migrating
6479 * @locations: result of query
6481 * @cred: credential to use for this operation
6483 * Returns NFS4_OK on success, a negative NFS4ERR status code if the
6484 * operation failed, or a negative errno if a local error occurred.
6486 * On success, "locations" is filled in, but if the server has
6487 * no locations information, NFS_ATTR_FATTR_V4_LOCATIONS is not
6490 * -NFS4ERR_LEASE_MOVED is returned if the server still has leases
6491 * from this client that require migration recovery.
6493 int nfs4_proc_get_locations(struct inode
*inode
,
6494 struct nfs4_fs_locations
*locations
,
6495 struct page
*page
, struct rpc_cred
*cred
)
6497 struct nfs_server
*server
= NFS_SERVER(inode
);
6498 struct nfs_client
*clp
= server
->nfs_client
;
6499 const struct nfs4_mig_recovery_ops
*ops
=
6500 clp
->cl_mvops
->mig_recovery_ops
;
6501 struct nfs4_exception exception
= { };
6504 dprintk("%s: FSID %llx:%llx on \"%s\"\n", __func__
,
6505 (unsigned long long)server
->fsid
.major
,
6506 (unsigned long long)server
->fsid
.minor
,
6508 nfs_display_fhandle(NFS_FH(inode
), __func__
);
6511 status
= ops
->get_locations(inode
, locations
, page
, cred
);
6512 if (status
!= -NFS4ERR_DELAY
)
6514 nfs4_handle_exception(server
, status
, &exception
);
6515 } while (exception
.retry
);
6520 * This operation also signals the server that this client is
6521 * performing "lease moved" recovery. The server can stop
6522 * returning NFS4ERR_LEASE_MOVED to this client. A RENEW operation
6523 * is appended to this compound to identify the client ID which is
6524 * performing recovery.
6526 static int _nfs40_proc_fsid_present(struct inode
*inode
, struct rpc_cred
*cred
)
6528 struct nfs_server
*server
= NFS_SERVER(inode
);
6529 struct nfs_client
*clp
= NFS_SERVER(inode
)->nfs_client
;
6530 struct rpc_clnt
*clnt
= server
->client
;
6531 struct nfs4_fsid_present_arg args
= {
6532 .fh
= NFS_FH(inode
),
6533 .clientid
= clp
->cl_clientid
,
6534 .renew
= 1, /* append RENEW */
6536 struct nfs4_fsid_present_res res
= {
6539 struct rpc_message msg
= {
6540 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FSID_PRESENT
],
6545 unsigned long now
= jiffies
;
6548 res
.fh
= nfs_alloc_fhandle();
6552 nfs4_init_sequence(&args
.seq_args
, &res
.seq_res
, 0);
6553 nfs4_set_sequence_privileged(&args
.seq_args
);
6554 status
= nfs4_call_sync_sequence(clnt
, server
, &msg
,
6555 &args
.seq_args
, &res
.seq_res
);
6556 nfs_free_fhandle(res
.fh
);
6560 do_renew_lease(clp
, now
);
6564 #ifdef CONFIG_NFS_V4_1
6567 * This operation also signals the server that this client is
6568 * performing "lease moved" recovery. The server can stop asserting
6569 * SEQ4_STATUS_LEASE_MOVED for this client. The client ID performing
6570 * this operation is identified in the SEQUENCE operation in this
6573 static int _nfs41_proc_fsid_present(struct inode
*inode
, struct rpc_cred
*cred
)
6575 struct nfs_server
*server
= NFS_SERVER(inode
);
6576 struct rpc_clnt
*clnt
= server
->client
;
6577 struct nfs4_fsid_present_arg args
= {
6578 .fh
= NFS_FH(inode
),
6580 struct nfs4_fsid_present_res res
= {
6582 struct rpc_message msg
= {
6583 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FSID_PRESENT
],
6590 res
.fh
= nfs_alloc_fhandle();
6594 nfs4_init_sequence(&args
.seq_args
, &res
.seq_res
, 0);
6595 nfs4_set_sequence_privileged(&args
.seq_args
);
6596 status
= nfs4_call_sync_sequence(clnt
, server
, &msg
,
6597 &args
.seq_args
, &res
.seq_res
);
6598 nfs_free_fhandle(res
.fh
);
6599 if (status
== NFS4_OK
&&
6600 res
.seq_res
.sr_status_flags
& SEQ4_STATUS_LEASE_MOVED
)
6601 status
= -NFS4ERR_LEASE_MOVED
;
6605 #endif /* CONFIG_NFS_V4_1 */
6608 * nfs4_proc_fsid_present - Is this FSID present or absent on server?
6609 * @inode: inode on FSID to check
6610 * @cred: credential to use for this operation
6612 * Server indicates whether the FSID is present, moved, or not
6613 * recognized. This operation is necessary to clear a LEASE_MOVED
6614 * condition for this client ID.
6616 * Returns NFS4_OK if the FSID is present on this server,
6617 * -NFS4ERR_MOVED if the FSID is no longer present, a negative
6618 * NFS4ERR code if some error occurred on the server, or a
6619 * negative errno if a local failure occurred.
6621 int nfs4_proc_fsid_present(struct inode
*inode
, struct rpc_cred
*cred
)
6623 struct nfs_server
*server
= NFS_SERVER(inode
);
6624 struct nfs_client
*clp
= server
->nfs_client
;
6625 const struct nfs4_mig_recovery_ops
*ops
=
6626 clp
->cl_mvops
->mig_recovery_ops
;
6627 struct nfs4_exception exception
= { };
6630 dprintk("%s: FSID %llx:%llx on \"%s\"\n", __func__
,
6631 (unsigned long long)server
->fsid
.major
,
6632 (unsigned long long)server
->fsid
.minor
,
6634 nfs_display_fhandle(NFS_FH(inode
), __func__
);
6637 status
= ops
->fsid_present(inode
, cred
);
6638 if (status
!= -NFS4ERR_DELAY
)
6640 nfs4_handle_exception(server
, status
, &exception
);
6641 } while (exception
.retry
);
6646 * If 'use_integrity' is true and the state managment nfs_client
6647 * cl_rpcclient is using krb5i/p, use the integrity protected cl_rpcclient
6648 * and the machine credential as per RFC3530bis and RFC5661 Security
6649 * Considerations sections. Otherwise, just use the user cred with the
6650 * filesystem's rpc_client.
6652 static int _nfs4_proc_secinfo(struct inode
*dir
, const struct qstr
*name
, struct nfs4_secinfo_flavors
*flavors
, bool use_integrity
)
6655 struct nfs4_secinfo_arg args
= {
6656 .dir_fh
= NFS_FH(dir
),
6659 struct nfs4_secinfo_res res
= {
6662 struct rpc_message msg
= {
6663 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SECINFO
],
6667 struct rpc_clnt
*clnt
= NFS_SERVER(dir
)->client
;
6668 struct rpc_cred
*cred
= NULL
;
6670 if (use_integrity
) {
6671 clnt
= NFS_SERVER(dir
)->nfs_client
->cl_rpcclient
;
6672 cred
= nfs4_get_clid_cred(NFS_SERVER(dir
)->nfs_client
);
6673 msg
.rpc_cred
= cred
;
6676 dprintk("NFS call secinfo %s\n", name
->name
);
6678 nfs4_state_protect(NFS_SERVER(dir
)->nfs_client
,
6679 NFS_SP4_MACH_CRED_SECINFO
, &clnt
, &msg
);
6681 status
= nfs4_call_sync(clnt
, NFS_SERVER(dir
), &msg
, &args
.seq_args
,
6683 dprintk("NFS reply secinfo: %d\n", status
);
6691 int nfs4_proc_secinfo(struct inode
*dir
, const struct qstr
*name
,
6692 struct nfs4_secinfo_flavors
*flavors
)
6694 struct nfs4_exception exception
= { };
6697 err
= -NFS4ERR_WRONGSEC
;
6699 /* try to use integrity protection with machine cred */
6700 if (_nfs4_is_integrity_protected(NFS_SERVER(dir
)->nfs_client
))
6701 err
= _nfs4_proc_secinfo(dir
, name
, flavors
, true);
6704 * if unable to use integrity protection, or SECINFO with
6705 * integrity protection returns NFS4ERR_WRONGSEC (which is
6706 * disallowed by spec, but exists in deployed servers) use
6707 * the current filesystem's rpc_client and the user cred.
6709 if (err
== -NFS4ERR_WRONGSEC
)
6710 err
= _nfs4_proc_secinfo(dir
, name
, flavors
, false);
6712 trace_nfs4_secinfo(dir
, name
, err
);
6713 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
6715 } while (exception
.retry
);
6719 #ifdef CONFIG_NFS_V4_1
6721 * Check the exchange flags returned by the server for invalid flags, having
6722 * both PNFS and NON_PNFS flags set, and not having one of NON_PNFS, PNFS, or
6725 static int nfs4_check_cl_exchange_flags(u32 flags
)
6727 if (flags
& ~EXCHGID4_FLAG_MASK_R
)
6729 if ((flags
& EXCHGID4_FLAG_USE_PNFS_MDS
) &&
6730 (flags
& EXCHGID4_FLAG_USE_NON_PNFS
))
6732 if (!(flags
& (EXCHGID4_FLAG_MASK_PNFS
)))
6736 return -NFS4ERR_INVAL
;
6740 nfs41_same_server_scope(struct nfs41_server_scope
*a
,
6741 struct nfs41_server_scope
*b
)
6743 if (a
->server_scope_sz
== b
->server_scope_sz
&&
6744 memcmp(a
->server_scope
, b
->server_scope
, a
->server_scope_sz
) == 0)
6751 * nfs4_proc_bind_conn_to_session()
6753 * The 4.1 client currently uses the same TCP connection for the
6754 * fore and backchannel.
6756 int nfs4_proc_bind_conn_to_session(struct nfs_client
*clp
, struct rpc_cred
*cred
)
6759 struct nfs41_bind_conn_to_session_args args
= {
6761 .dir
= NFS4_CDFC4_FORE_OR_BOTH
,
6763 struct nfs41_bind_conn_to_session_res res
;
6764 struct rpc_message msg
= {
6766 &nfs4_procedures
[NFSPROC4_CLNT_BIND_CONN_TO_SESSION
],
6772 dprintk("--> %s\n", __func__
);
6774 nfs4_copy_sessionid(&args
.sessionid
, &clp
->cl_session
->sess_id
);
6775 if (!(clp
->cl_session
->flags
& SESSION4_BACK_CHAN
))
6776 args
.dir
= NFS4_CDFC4_FORE
;
6778 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
6779 trace_nfs4_bind_conn_to_session(clp
, status
);
6781 if (memcmp(res
.sessionid
.data
,
6782 clp
->cl_session
->sess_id
.data
, NFS4_MAX_SESSIONID_LEN
)) {
6783 dprintk("NFS: %s: Session ID mismatch\n", __func__
);
6787 if ((res
.dir
& args
.dir
) != res
.dir
|| res
.dir
== 0) {
6788 dprintk("NFS: %s: Unexpected direction from server\n",
6793 if (res
.use_conn_in_rdma_mode
!= args
.use_conn_in_rdma_mode
) {
6794 dprintk("NFS: %s: Server returned RDMA mode = true\n",
6801 dprintk("<-- %s status= %d\n", __func__
, status
);
6806 * Minimum set of SP4_MACH_CRED operations from RFC 5661 in the enforce map
6807 * and operations we'd like to see to enable certain features in the allow map
6809 static const struct nfs41_state_protection nfs4_sp4_mach_cred_request
= {
6810 .how
= SP4_MACH_CRED
,
6811 .enforce
.u
.words
= {
6812 [1] = 1 << (OP_BIND_CONN_TO_SESSION
- 32) |
6813 1 << (OP_EXCHANGE_ID
- 32) |
6814 1 << (OP_CREATE_SESSION
- 32) |
6815 1 << (OP_DESTROY_SESSION
- 32) |
6816 1 << (OP_DESTROY_CLIENTID
- 32)
6819 [0] = 1 << (OP_CLOSE
) |
6822 [1] = 1 << (OP_SECINFO
- 32) |
6823 1 << (OP_SECINFO_NO_NAME
- 32) |
6824 1 << (OP_TEST_STATEID
- 32) |
6825 1 << (OP_FREE_STATEID
- 32) |
6826 1 << (OP_WRITE
- 32)
6831 * Select the state protection mode for client `clp' given the server results
6832 * from exchange_id in `sp'.
6834 * Returns 0 on success, negative errno otherwise.
6836 static int nfs4_sp4_select_mode(struct nfs_client
*clp
,
6837 struct nfs41_state_protection
*sp
)
6839 static const u32 supported_enforce
[NFS4_OP_MAP_NUM_WORDS
] = {
6840 [1] = 1 << (OP_BIND_CONN_TO_SESSION
- 32) |
6841 1 << (OP_EXCHANGE_ID
- 32) |
6842 1 << (OP_CREATE_SESSION
- 32) |
6843 1 << (OP_DESTROY_SESSION
- 32) |
6844 1 << (OP_DESTROY_CLIENTID
- 32)
6848 if (sp
->how
== SP4_MACH_CRED
) {
6849 /* Print state protect result */
6850 dfprintk(MOUNT
, "Server SP4_MACH_CRED support:\n");
6851 for (i
= 0; i
<= LAST_NFS4_OP
; i
++) {
6852 if (test_bit(i
, sp
->enforce
.u
.longs
))
6853 dfprintk(MOUNT
, " enforce op %d\n", i
);
6854 if (test_bit(i
, sp
->allow
.u
.longs
))
6855 dfprintk(MOUNT
, " allow op %d\n", i
);
6858 /* make sure nothing is on enforce list that isn't supported */
6859 for (i
= 0; i
< NFS4_OP_MAP_NUM_WORDS
; i
++) {
6860 if (sp
->enforce
.u
.words
[i
] & ~supported_enforce
[i
]) {
6861 dfprintk(MOUNT
, "sp4_mach_cred: disabled\n");
6867 * Minimal mode - state operations are allowed to use machine
6868 * credential. Note this already happens by default, so the
6869 * client doesn't have to do anything more than the negotiation.
6871 * NOTE: we don't care if EXCHANGE_ID is in the list -
6872 * we're already using the machine cred for exchange_id
6873 * and will never use a different cred.
6875 if (test_bit(OP_BIND_CONN_TO_SESSION
, sp
->enforce
.u
.longs
) &&
6876 test_bit(OP_CREATE_SESSION
, sp
->enforce
.u
.longs
) &&
6877 test_bit(OP_DESTROY_SESSION
, sp
->enforce
.u
.longs
) &&
6878 test_bit(OP_DESTROY_CLIENTID
, sp
->enforce
.u
.longs
)) {
6879 dfprintk(MOUNT
, "sp4_mach_cred:\n");
6880 dfprintk(MOUNT
, " minimal mode enabled\n");
6881 set_bit(NFS_SP4_MACH_CRED_MINIMAL
, &clp
->cl_sp4_flags
);
6883 dfprintk(MOUNT
, "sp4_mach_cred: disabled\n");
6887 if (test_bit(OP_CLOSE
, sp
->allow
.u
.longs
) &&
6888 test_bit(OP_LOCKU
, sp
->allow
.u
.longs
)) {
6889 dfprintk(MOUNT
, " cleanup mode enabled\n");
6890 set_bit(NFS_SP4_MACH_CRED_CLEANUP
, &clp
->cl_sp4_flags
);
6893 if (test_bit(OP_SECINFO
, sp
->allow
.u
.longs
) &&
6894 test_bit(OP_SECINFO_NO_NAME
, sp
->allow
.u
.longs
)) {
6895 dfprintk(MOUNT
, " secinfo mode enabled\n");
6896 set_bit(NFS_SP4_MACH_CRED_SECINFO
, &clp
->cl_sp4_flags
);
6899 if (test_bit(OP_TEST_STATEID
, sp
->allow
.u
.longs
) &&
6900 test_bit(OP_FREE_STATEID
, sp
->allow
.u
.longs
)) {
6901 dfprintk(MOUNT
, " stateid mode enabled\n");
6902 set_bit(NFS_SP4_MACH_CRED_STATEID
, &clp
->cl_sp4_flags
);
6905 if (test_bit(OP_WRITE
, sp
->allow
.u
.longs
)) {
6906 dfprintk(MOUNT
, " write mode enabled\n");
6907 set_bit(NFS_SP4_MACH_CRED_WRITE
, &clp
->cl_sp4_flags
);
6910 if (test_bit(OP_COMMIT
, sp
->allow
.u
.longs
)) {
6911 dfprintk(MOUNT
, " commit mode enabled\n");
6912 set_bit(NFS_SP4_MACH_CRED_COMMIT
, &clp
->cl_sp4_flags
);
6920 * _nfs4_proc_exchange_id()
6922 * Wrapper for EXCHANGE_ID operation.
6924 static int _nfs4_proc_exchange_id(struct nfs_client
*clp
, struct rpc_cred
*cred
,
6927 nfs4_verifier verifier
;
6928 struct nfs41_exchange_id_args args
= {
6929 .verifier
= &verifier
,
6931 #ifdef CONFIG_NFS_V4_1_MIGRATION
6932 .flags
= EXCHGID4_FLAG_SUPP_MOVED_REFER
|
6933 EXCHGID4_FLAG_BIND_PRINC_STATEID
|
6934 EXCHGID4_FLAG_SUPP_MOVED_MIGR
,
6936 .flags
= EXCHGID4_FLAG_SUPP_MOVED_REFER
|
6937 EXCHGID4_FLAG_BIND_PRINC_STATEID
,
6940 struct nfs41_exchange_id_res res
= {
6944 struct rpc_message msg
= {
6945 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_EXCHANGE_ID
],
6951 nfs4_init_boot_verifier(clp
, &verifier
);
6953 status
= nfs4_init_uniform_client_string(clp
);
6957 dprintk("NFS call exchange_id auth=%s, '%s'\n",
6958 clp
->cl_rpcclient
->cl_auth
->au_ops
->au_name
,
6961 res
.server_owner
= kzalloc(sizeof(struct nfs41_server_owner
),
6963 if (unlikely(res
.server_owner
== NULL
)) {
6968 res
.server_scope
= kzalloc(sizeof(struct nfs41_server_scope
),
6970 if (unlikely(res
.server_scope
== NULL
)) {
6972 goto out_server_owner
;
6975 res
.impl_id
= kzalloc(sizeof(struct nfs41_impl_id
), GFP_NOFS
);
6976 if (unlikely(res
.impl_id
== NULL
)) {
6978 goto out_server_scope
;
6983 args
.state_protect
.how
= SP4_NONE
;
6987 args
.state_protect
= nfs4_sp4_mach_cred_request
;
6997 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
6998 trace_nfs4_exchange_id(clp
, status
);
7000 status
= nfs4_check_cl_exchange_flags(res
.flags
);
7003 status
= nfs4_sp4_select_mode(clp
, &res
.state_protect
);
7006 clp
->cl_clientid
= res
.clientid
;
7007 clp
->cl_exchange_flags
= res
.flags
;
7008 /* Client ID is not confirmed */
7009 if (!(res
.flags
& EXCHGID4_FLAG_CONFIRMED_R
)) {
7010 clear_bit(NFS4_SESSION_ESTABLISHED
,
7011 &clp
->cl_session
->session_state
);
7012 clp
->cl_seqid
= res
.seqid
;
7015 kfree(clp
->cl_serverowner
);
7016 clp
->cl_serverowner
= res
.server_owner
;
7017 res
.server_owner
= NULL
;
7019 /* use the most recent implementation id */
7020 kfree(clp
->cl_implid
);
7021 clp
->cl_implid
= res
.impl_id
;
7024 if (clp
->cl_serverscope
!= NULL
&&
7025 !nfs41_same_server_scope(clp
->cl_serverscope
,
7026 res
.server_scope
)) {
7027 dprintk("%s: server_scope mismatch detected\n",
7029 set_bit(NFS4CLNT_SERVER_SCOPE_MISMATCH
, &clp
->cl_state
);
7030 kfree(clp
->cl_serverscope
);
7031 clp
->cl_serverscope
= NULL
;
7034 if (clp
->cl_serverscope
== NULL
) {
7035 clp
->cl_serverscope
= res
.server_scope
;
7036 res
.server_scope
= NULL
;
7043 kfree(res
.server_scope
);
7045 kfree(res
.server_owner
);
7047 if (clp
->cl_implid
!= NULL
)
7048 dprintk("NFS reply exchange_id: Server Implementation ID: "
7049 "domain: %s, name: %s, date: %llu,%u\n",
7050 clp
->cl_implid
->domain
, clp
->cl_implid
->name
,
7051 clp
->cl_implid
->date
.seconds
,
7052 clp
->cl_implid
->date
.nseconds
);
7053 dprintk("NFS reply exchange_id: %d\n", status
);
7058 * nfs4_proc_exchange_id()
7060 * Returns zero, a negative errno, or a negative NFS4ERR status code.
7062 * Since the clientid has expired, all compounds using sessions
7063 * associated with the stale clientid will be returning
7064 * NFS4ERR_BADSESSION in the sequence operation, and will therefore
7065 * be in some phase of session reset.
7067 * Will attempt to negotiate SP4_MACH_CRED if krb5i / krb5p auth is used.
7069 int nfs4_proc_exchange_id(struct nfs_client
*clp
, struct rpc_cred
*cred
)
7071 rpc_authflavor_t authflavor
= clp
->cl_rpcclient
->cl_auth
->au_flavor
;
7074 /* try SP4_MACH_CRED if krb5i/p */
7075 if (authflavor
== RPC_AUTH_GSS_KRB5I
||
7076 authflavor
== RPC_AUTH_GSS_KRB5P
) {
7077 status
= _nfs4_proc_exchange_id(clp
, cred
, SP4_MACH_CRED
);
7083 return _nfs4_proc_exchange_id(clp
, cred
, SP4_NONE
);
7086 static int _nfs4_proc_destroy_clientid(struct nfs_client
*clp
,
7087 struct rpc_cred
*cred
)
7089 struct rpc_message msg
= {
7090 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DESTROY_CLIENTID
],
7096 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
7097 trace_nfs4_destroy_clientid(clp
, status
);
7099 dprintk("NFS: Got error %d from the server %s on "
7100 "DESTROY_CLIENTID.", status
, clp
->cl_hostname
);
7104 static int nfs4_proc_destroy_clientid(struct nfs_client
*clp
,
7105 struct rpc_cred
*cred
)
7110 for (loop
= NFS4_MAX_LOOP_ON_RECOVER
; loop
!= 0; loop
--) {
7111 ret
= _nfs4_proc_destroy_clientid(clp
, cred
);
7113 case -NFS4ERR_DELAY
:
7114 case -NFS4ERR_CLIENTID_BUSY
:
7124 int nfs4_destroy_clientid(struct nfs_client
*clp
)
7126 struct rpc_cred
*cred
;
7129 if (clp
->cl_mvops
->minor_version
< 1)
7131 if (clp
->cl_exchange_flags
== 0)
7133 if (clp
->cl_preserve_clid
)
7135 cred
= nfs4_get_clid_cred(clp
);
7136 ret
= nfs4_proc_destroy_clientid(clp
, cred
);
7141 case -NFS4ERR_STALE_CLIENTID
:
7142 clp
->cl_exchange_flags
= 0;
7148 struct nfs4_get_lease_time_data
{
7149 struct nfs4_get_lease_time_args
*args
;
7150 struct nfs4_get_lease_time_res
*res
;
7151 struct nfs_client
*clp
;
7154 static void nfs4_get_lease_time_prepare(struct rpc_task
*task
,
7157 struct nfs4_get_lease_time_data
*data
=
7158 (struct nfs4_get_lease_time_data
*)calldata
;
7160 dprintk("--> %s\n", __func__
);
7161 /* just setup sequence, do not trigger session recovery
7162 since we're invoked within one */
7163 nfs41_setup_sequence(data
->clp
->cl_session
,
7164 &data
->args
->la_seq_args
,
7165 &data
->res
->lr_seq_res
,
7167 dprintk("<-- %s\n", __func__
);
7171 * Called from nfs4_state_manager thread for session setup, so don't recover
7172 * from sequence operation or clientid errors.
7174 static void nfs4_get_lease_time_done(struct rpc_task
*task
, void *calldata
)
7176 struct nfs4_get_lease_time_data
*data
=
7177 (struct nfs4_get_lease_time_data
*)calldata
;
7179 dprintk("--> %s\n", __func__
);
7180 if (!nfs41_sequence_done(task
, &data
->res
->lr_seq_res
))
7182 switch (task
->tk_status
) {
7183 case -NFS4ERR_DELAY
:
7184 case -NFS4ERR_GRACE
:
7185 dprintk("%s Retry: tk_status %d\n", __func__
, task
->tk_status
);
7186 rpc_delay(task
, NFS4_POLL_RETRY_MIN
);
7187 task
->tk_status
= 0;
7189 case -NFS4ERR_RETRY_UNCACHED_REP
:
7190 rpc_restart_call_prepare(task
);
7193 dprintk("<-- %s\n", __func__
);
7196 static const struct rpc_call_ops nfs4_get_lease_time_ops
= {
7197 .rpc_call_prepare
= nfs4_get_lease_time_prepare
,
7198 .rpc_call_done
= nfs4_get_lease_time_done
,
7201 int nfs4_proc_get_lease_time(struct nfs_client
*clp
, struct nfs_fsinfo
*fsinfo
)
7203 struct rpc_task
*task
;
7204 struct nfs4_get_lease_time_args args
;
7205 struct nfs4_get_lease_time_res res
= {
7206 .lr_fsinfo
= fsinfo
,
7208 struct nfs4_get_lease_time_data data
= {
7213 struct rpc_message msg
= {
7214 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GET_LEASE_TIME
],
7218 struct rpc_task_setup task_setup
= {
7219 .rpc_client
= clp
->cl_rpcclient
,
7220 .rpc_message
= &msg
,
7221 .callback_ops
= &nfs4_get_lease_time_ops
,
7222 .callback_data
= &data
,
7223 .flags
= RPC_TASK_TIMEOUT
,
7227 nfs4_init_sequence(&args
.la_seq_args
, &res
.lr_seq_res
, 0);
7228 nfs4_set_sequence_privileged(&args
.la_seq_args
);
7229 dprintk("--> %s\n", __func__
);
7230 task
= rpc_run_task(&task_setup
);
7233 status
= PTR_ERR(task
);
7235 status
= task
->tk_status
;
7238 dprintk("<-- %s return %d\n", __func__
, status
);
7244 * Initialize the values to be used by the client in CREATE_SESSION
7245 * If nfs4_init_session set the fore channel request and response sizes,
7248 * Set the back channel max_resp_sz_cached to zero to force the client to
7249 * always set csa_cachethis to FALSE because the current implementation
7250 * of the back channel DRC only supports caching the CB_SEQUENCE operation.
7252 static void nfs4_init_channel_attrs(struct nfs41_create_session_args
*args
)
7254 unsigned int max_rqst_sz
, max_resp_sz
;
7256 max_rqst_sz
= NFS_MAX_FILE_IO_SIZE
+ nfs41_maxwrite_overhead
;
7257 max_resp_sz
= NFS_MAX_FILE_IO_SIZE
+ nfs41_maxread_overhead
;
7259 /* Fore channel attributes */
7260 args
->fc_attrs
.max_rqst_sz
= max_rqst_sz
;
7261 args
->fc_attrs
.max_resp_sz
= max_resp_sz
;
7262 args
->fc_attrs
.max_ops
= NFS4_MAX_OPS
;
7263 args
->fc_attrs
.max_reqs
= max_session_slots
;
7265 dprintk("%s: Fore Channel : max_rqst_sz=%u max_resp_sz=%u "
7266 "max_ops=%u max_reqs=%u\n",
7268 args
->fc_attrs
.max_rqst_sz
, args
->fc_attrs
.max_resp_sz
,
7269 args
->fc_attrs
.max_ops
, args
->fc_attrs
.max_reqs
);
7271 /* Back channel attributes */
7272 args
->bc_attrs
.max_rqst_sz
= PAGE_SIZE
;
7273 args
->bc_attrs
.max_resp_sz
= PAGE_SIZE
;
7274 args
->bc_attrs
.max_resp_sz_cached
= 0;
7275 args
->bc_attrs
.max_ops
= NFS4_MAX_BACK_CHANNEL_OPS
;
7276 args
->bc_attrs
.max_reqs
= 1;
7278 dprintk("%s: Back Channel : max_rqst_sz=%u max_resp_sz=%u "
7279 "max_resp_sz_cached=%u max_ops=%u max_reqs=%u\n",
7281 args
->bc_attrs
.max_rqst_sz
, args
->bc_attrs
.max_resp_sz
,
7282 args
->bc_attrs
.max_resp_sz_cached
, args
->bc_attrs
.max_ops
,
7283 args
->bc_attrs
.max_reqs
);
7286 static int nfs4_verify_fore_channel_attrs(struct nfs41_create_session_args
*args
,
7287 struct nfs41_create_session_res
*res
)
7289 struct nfs4_channel_attrs
*sent
= &args
->fc_attrs
;
7290 struct nfs4_channel_attrs
*rcvd
= &res
->fc_attrs
;
7292 if (rcvd
->max_resp_sz
> sent
->max_resp_sz
)
7295 * Our requested max_ops is the minimum we need; we're not
7296 * prepared to break up compounds into smaller pieces than that.
7297 * So, no point even trying to continue if the server won't
7300 if (rcvd
->max_ops
< sent
->max_ops
)
7302 if (rcvd
->max_reqs
== 0)
7304 if (rcvd
->max_reqs
> NFS4_MAX_SLOT_TABLE
)
7305 rcvd
->max_reqs
= NFS4_MAX_SLOT_TABLE
;
7309 static int nfs4_verify_back_channel_attrs(struct nfs41_create_session_args
*args
,
7310 struct nfs41_create_session_res
*res
)
7312 struct nfs4_channel_attrs
*sent
= &args
->bc_attrs
;
7313 struct nfs4_channel_attrs
*rcvd
= &res
->bc_attrs
;
7315 if (!(res
->flags
& SESSION4_BACK_CHAN
))
7317 if (rcvd
->max_rqst_sz
> sent
->max_rqst_sz
)
7319 if (rcvd
->max_resp_sz
< sent
->max_resp_sz
)
7321 if (rcvd
->max_resp_sz_cached
> sent
->max_resp_sz_cached
)
7323 /* These would render the backchannel useless: */
7324 if (rcvd
->max_ops
!= sent
->max_ops
)
7326 if (rcvd
->max_reqs
!= sent
->max_reqs
)
7332 static int nfs4_verify_channel_attrs(struct nfs41_create_session_args
*args
,
7333 struct nfs41_create_session_res
*res
)
7337 ret
= nfs4_verify_fore_channel_attrs(args
, res
);
7340 return nfs4_verify_back_channel_attrs(args
, res
);
7343 static void nfs4_update_session(struct nfs4_session
*session
,
7344 struct nfs41_create_session_res
*res
)
7346 nfs4_copy_sessionid(&session
->sess_id
, &res
->sessionid
);
7347 /* Mark client id and session as being confirmed */
7348 session
->clp
->cl_exchange_flags
|= EXCHGID4_FLAG_CONFIRMED_R
;
7349 set_bit(NFS4_SESSION_ESTABLISHED
, &session
->session_state
);
7350 session
->flags
= res
->flags
;
7351 memcpy(&session
->fc_attrs
, &res
->fc_attrs
, sizeof(session
->fc_attrs
));
7352 if (res
->flags
& SESSION4_BACK_CHAN
)
7353 memcpy(&session
->bc_attrs
, &res
->bc_attrs
,
7354 sizeof(session
->bc_attrs
));
7357 static int _nfs4_proc_create_session(struct nfs_client
*clp
,
7358 struct rpc_cred
*cred
)
7360 struct nfs4_session
*session
= clp
->cl_session
;
7361 struct nfs41_create_session_args args
= {
7363 .clientid
= clp
->cl_clientid
,
7364 .seqid
= clp
->cl_seqid
,
7365 .cb_program
= NFS4_CALLBACK
,
7367 struct nfs41_create_session_res res
;
7369 struct rpc_message msg
= {
7370 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CREATE_SESSION
],
7377 nfs4_init_channel_attrs(&args
);
7378 args
.flags
= (SESSION4_PERSIST
| SESSION4_BACK_CHAN
);
7380 status
= rpc_call_sync(session
->clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
7381 trace_nfs4_create_session(clp
, status
);
7384 /* Verify the session's negotiated channel_attrs values */
7385 status
= nfs4_verify_channel_attrs(&args
, &res
);
7386 /* Increment the clientid slot sequence id */
7387 if (clp
->cl_seqid
== res
.seqid
)
7391 nfs4_update_session(session
, &res
);
7398 * Issues a CREATE_SESSION operation to the server.
7399 * It is the responsibility of the caller to verify the session is
7400 * expired before calling this routine.
7402 int nfs4_proc_create_session(struct nfs_client
*clp
, struct rpc_cred
*cred
)
7406 struct nfs4_session
*session
= clp
->cl_session
;
7408 dprintk("--> %s clp=%p session=%p\n", __func__
, clp
, session
);
7410 status
= _nfs4_proc_create_session(clp
, cred
);
7414 /* Init or reset the session slot tables */
7415 status
= nfs4_setup_session_slot_tables(session
);
7416 dprintk("slot table setup returned %d\n", status
);
7420 ptr
= (unsigned *)&session
->sess_id
.data
[0];
7421 dprintk("%s client>seqid %d sessionid %u:%u:%u:%u\n", __func__
,
7422 clp
->cl_seqid
, ptr
[0], ptr
[1], ptr
[2], ptr
[3]);
7424 dprintk("<-- %s\n", __func__
);
7429 * Issue the over-the-wire RPC DESTROY_SESSION.
7430 * The caller must serialize access to this routine.
7432 int nfs4_proc_destroy_session(struct nfs4_session
*session
,
7433 struct rpc_cred
*cred
)
7435 struct rpc_message msg
= {
7436 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DESTROY_SESSION
],
7437 .rpc_argp
= session
,
7442 dprintk("--> nfs4_proc_destroy_session\n");
7444 /* session is still being setup */
7445 if (!test_and_clear_bit(NFS4_SESSION_ESTABLISHED
, &session
->session_state
))
7448 status
= rpc_call_sync(session
->clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
7449 trace_nfs4_destroy_session(session
->clp
, status
);
7452 dprintk("NFS: Got error %d from the server on DESTROY_SESSION. "
7453 "Session has been destroyed regardless...\n", status
);
7455 dprintk("<-- nfs4_proc_destroy_session\n");
7460 * Renew the cl_session lease.
7462 struct nfs4_sequence_data
{
7463 struct nfs_client
*clp
;
7464 struct nfs4_sequence_args args
;
7465 struct nfs4_sequence_res res
;
7468 static void nfs41_sequence_release(void *data
)
7470 struct nfs4_sequence_data
*calldata
= data
;
7471 struct nfs_client
*clp
= calldata
->clp
;
7473 if (atomic_read(&clp
->cl_count
) > 1)
7474 nfs4_schedule_state_renewal(clp
);
7475 nfs_put_client(clp
);
7479 static int nfs41_sequence_handle_errors(struct rpc_task
*task
, struct nfs_client
*clp
)
7481 switch(task
->tk_status
) {
7482 case -NFS4ERR_DELAY
:
7483 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
7486 nfs4_schedule_lease_recovery(clp
);
7491 static void nfs41_sequence_call_done(struct rpc_task
*task
, void *data
)
7493 struct nfs4_sequence_data
*calldata
= data
;
7494 struct nfs_client
*clp
= calldata
->clp
;
7496 if (!nfs41_sequence_done(task
, task
->tk_msg
.rpc_resp
))
7499 trace_nfs4_sequence(clp
, task
->tk_status
);
7500 if (task
->tk_status
< 0) {
7501 dprintk("%s ERROR %d\n", __func__
, task
->tk_status
);
7502 if (atomic_read(&clp
->cl_count
) == 1)
7505 if (nfs41_sequence_handle_errors(task
, clp
) == -EAGAIN
) {
7506 rpc_restart_call_prepare(task
);
7510 dprintk("%s rpc_cred %p\n", __func__
, task
->tk_msg
.rpc_cred
);
7512 dprintk("<-- %s\n", __func__
);
7515 static void nfs41_sequence_prepare(struct rpc_task
*task
, void *data
)
7517 struct nfs4_sequence_data
*calldata
= data
;
7518 struct nfs_client
*clp
= calldata
->clp
;
7519 struct nfs4_sequence_args
*args
;
7520 struct nfs4_sequence_res
*res
;
7522 args
= task
->tk_msg
.rpc_argp
;
7523 res
= task
->tk_msg
.rpc_resp
;
7525 nfs41_setup_sequence(clp
->cl_session
, args
, res
, task
);
7528 static const struct rpc_call_ops nfs41_sequence_ops
= {
7529 .rpc_call_done
= nfs41_sequence_call_done
,
7530 .rpc_call_prepare
= nfs41_sequence_prepare
,
7531 .rpc_release
= nfs41_sequence_release
,
7534 static struct rpc_task
*_nfs41_proc_sequence(struct nfs_client
*clp
,
7535 struct rpc_cred
*cred
,
7538 struct nfs4_sequence_data
*calldata
;
7539 struct rpc_message msg
= {
7540 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SEQUENCE
],
7543 struct rpc_task_setup task_setup_data
= {
7544 .rpc_client
= clp
->cl_rpcclient
,
7545 .rpc_message
= &msg
,
7546 .callback_ops
= &nfs41_sequence_ops
,
7547 .flags
= RPC_TASK_ASYNC
| RPC_TASK_TIMEOUT
,
7550 if (!atomic_inc_not_zero(&clp
->cl_count
))
7551 return ERR_PTR(-EIO
);
7552 calldata
= kzalloc(sizeof(*calldata
), GFP_NOFS
);
7553 if (calldata
== NULL
) {
7554 nfs_put_client(clp
);
7555 return ERR_PTR(-ENOMEM
);
7557 nfs4_init_sequence(&calldata
->args
, &calldata
->res
, 0);
7559 nfs4_set_sequence_privileged(&calldata
->args
);
7560 msg
.rpc_argp
= &calldata
->args
;
7561 msg
.rpc_resp
= &calldata
->res
;
7562 calldata
->clp
= clp
;
7563 task_setup_data
.callback_data
= calldata
;
7565 return rpc_run_task(&task_setup_data
);
7568 static int nfs41_proc_async_sequence(struct nfs_client
*clp
, struct rpc_cred
*cred
, unsigned renew_flags
)
7570 struct rpc_task
*task
;
7573 if ((renew_flags
& NFS4_RENEW_TIMEOUT
) == 0)
7575 task
= _nfs41_proc_sequence(clp
, cred
, false);
7577 ret
= PTR_ERR(task
);
7579 rpc_put_task_async(task
);
7580 dprintk("<-- %s status=%d\n", __func__
, ret
);
7584 static int nfs4_proc_sequence(struct nfs_client
*clp
, struct rpc_cred
*cred
)
7586 struct rpc_task
*task
;
7589 task
= _nfs41_proc_sequence(clp
, cred
, true);
7591 ret
= PTR_ERR(task
);
7594 ret
= rpc_wait_for_completion_task(task
);
7596 ret
= task
->tk_status
;
7599 dprintk("<-- %s status=%d\n", __func__
, ret
);
7603 struct nfs4_reclaim_complete_data
{
7604 struct nfs_client
*clp
;
7605 struct nfs41_reclaim_complete_args arg
;
7606 struct nfs41_reclaim_complete_res res
;
7609 static void nfs4_reclaim_complete_prepare(struct rpc_task
*task
, void *data
)
7611 struct nfs4_reclaim_complete_data
*calldata
= data
;
7613 nfs41_setup_sequence(calldata
->clp
->cl_session
,
7614 &calldata
->arg
.seq_args
,
7615 &calldata
->res
.seq_res
,
7619 static int nfs41_reclaim_complete_handle_errors(struct rpc_task
*task
, struct nfs_client
*clp
)
7621 switch(task
->tk_status
) {
7623 case -NFS4ERR_COMPLETE_ALREADY
:
7624 case -NFS4ERR_WRONG_CRED
: /* What to do here? */
7626 case -NFS4ERR_DELAY
:
7627 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
7629 case -NFS4ERR_RETRY_UNCACHED_REP
:
7632 nfs4_schedule_lease_recovery(clp
);
7637 static void nfs4_reclaim_complete_done(struct rpc_task
*task
, void *data
)
7639 struct nfs4_reclaim_complete_data
*calldata
= data
;
7640 struct nfs_client
*clp
= calldata
->clp
;
7641 struct nfs4_sequence_res
*res
= &calldata
->res
.seq_res
;
7643 dprintk("--> %s\n", __func__
);
7644 if (!nfs41_sequence_done(task
, res
))
7647 trace_nfs4_reclaim_complete(clp
, task
->tk_status
);
7648 if (nfs41_reclaim_complete_handle_errors(task
, clp
) == -EAGAIN
) {
7649 rpc_restart_call_prepare(task
);
7652 dprintk("<-- %s\n", __func__
);
7655 static void nfs4_free_reclaim_complete_data(void *data
)
7657 struct nfs4_reclaim_complete_data
*calldata
= data
;
7662 static const struct rpc_call_ops nfs4_reclaim_complete_call_ops
= {
7663 .rpc_call_prepare
= nfs4_reclaim_complete_prepare
,
7664 .rpc_call_done
= nfs4_reclaim_complete_done
,
7665 .rpc_release
= nfs4_free_reclaim_complete_data
,
7669 * Issue a global reclaim complete.
7671 static int nfs41_proc_reclaim_complete(struct nfs_client
*clp
,
7672 struct rpc_cred
*cred
)
7674 struct nfs4_reclaim_complete_data
*calldata
;
7675 struct rpc_task
*task
;
7676 struct rpc_message msg
= {
7677 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RECLAIM_COMPLETE
],
7680 struct rpc_task_setup task_setup_data
= {
7681 .rpc_client
= clp
->cl_rpcclient
,
7682 .rpc_message
= &msg
,
7683 .callback_ops
= &nfs4_reclaim_complete_call_ops
,
7684 .flags
= RPC_TASK_ASYNC
,
7686 int status
= -ENOMEM
;
7688 dprintk("--> %s\n", __func__
);
7689 calldata
= kzalloc(sizeof(*calldata
), GFP_NOFS
);
7690 if (calldata
== NULL
)
7692 calldata
->clp
= clp
;
7693 calldata
->arg
.one_fs
= 0;
7695 nfs4_init_sequence(&calldata
->arg
.seq_args
, &calldata
->res
.seq_res
, 0);
7696 nfs4_set_sequence_privileged(&calldata
->arg
.seq_args
);
7697 msg
.rpc_argp
= &calldata
->arg
;
7698 msg
.rpc_resp
= &calldata
->res
;
7699 task_setup_data
.callback_data
= calldata
;
7700 task
= rpc_run_task(&task_setup_data
);
7702 status
= PTR_ERR(task
);
7705 status
= nfs4_wait_for_completion_rpc_task(task
);
7707 status
= task
->tk_status
;
7711 dprintk("<-- %s status=%d\n", __func__
, status
);
7716 nfs4_layoutget_prepare(struct rpc_task
*task
, void *calldata
)
7718 struct nfs4_layoutget
*lgp
= calldata
;
7719 struct nfs_server
*server
= NFS_SERVER(lgp
->args
.inode
);
7720 struct nfs4_session
*session
= nfs4_get_session(server
);
7722 dprintk("--> %s\n", __func__
);
7723 /* Note the is a race here, where a CB_LAYOUTRECALL can come in
7724 * right now covering the LAYOUTGET we are about to send.
7725 * However, that is not so catastrophic, and there seems
7726 * to be no way to prevent it completely.
7728 if (nfs41_setup_sequence(session
, &lgp
->args
.seq_args
,
7729 &lgp
->res
.seq_res
, task
))
7731 if (pnfs_choose_layoutget_stateid(&lgp
->args
.stateid
,
7732 NFS_I(lgp
->args
.inode
)->layout
,
7734 lgp
->args
.ctx
->state
)) {
7735 rpc_exit(task
, NFS4_OK
);
7739 static void nfs4_layoutget_done(struct rpc_task
*task
, void *calldata
)
7741 struct nfs4_layoutget
*lgp
= calldata
;
7742 struct inode
*inode
= lgp
->args
.inode
;
7743 struct nfs_server
*server
= NFS_SERVER(inode
);
7744 struct pnfs_layout_hdr
*lo
;
7745 struct nfs4_state
*state
= NULL
;
7746 unsigned long timeo
, now
, giveup
;
7748 dprintk("--> %s tk_status => %d\n", __func__
, -task
->tk_status
);
7750 if (!nfs41_sequence_done(task
, &lgp
->res
.seq_res
))
7753 switch (task
->tk_status
) {
7757 * NFS4ERR_LAYOUTTRYLATER is a conflict with another client
7758 * (or clients) writing to the same RAID stripe
7760 case -NFS4ERR_LAYOUTTRYLATER
:
7762 * NFS4ERR_RECALLCONFLICT is when conflict with self (must recall
7763 * existing layout before getting a new one).
7765 case -NFS4ERR_RECALLCONFLICT
:
7766 timeo
= rpc_get_timeout(task
->tk_client
);
7767 giveup
= lgp
->args
.timestamp
+ timeo
;
7769 if (time_after(giveup
, now
)) {
7770 unsigned long delay
;
7773 * - Not less then NFS4_POLL_RETRY_MIN.
7774 * - One last time a jiffie before we give up
7775 * - exponential backoff (time_now minus start_attempt)
7777 delay
= max_t(unsigned long, NFS4_POLL_RETRY_MIN
,
7778 min((giveup
- now
- 1),
7779 now
- lgp
->args
.timestamp
));
7781 dprintk("%s: NFS4ERR_RECALLCONFLICT waiting %lu\n",
7783 rpc_delay(task
, delay
);
7784 task
->tk_status
= 0;
7785 rpc_restart_call_prepare(task
);
7786 goto out
; /* Do not call nfs4_async_handle_error() */
7789 case -NFS4ERR_EXPIRED
:
7790 case -NFS4ERR_BAD_STATEID
:
7791 spin_lock(&inode
->i_lock
);
7792 lo
= NFS_I(inode
)->layout
;
7793 if (!lo
|| list_empty(&lo
->plh_segs
)) {
7794 spin_unlock(&inode
->i_lock
);
7795 /* If the open stateid was bad, then recover it. */
7796 state
= lgp
->args
.ctx
->state
;
7801 * Mark the bad layout state as invalid, then retry
7802 * with the current stateid.
7804 pnfs_mark_matching_lsegs_invalid(lo
, &head
, NULL
);
7805 spin_unlock(&inode
->i_lock
);
7806 pnfs_free_lseg_list(&head
);
7808 task
->tk_status
= 0;
7809 rpc_restart_call_prepare(task
);
7812 if (nfs4_async_handle_error(task
, server
, state
, NULL
) == -EAGAIN
)
7813 rpc_restart_call_prepare(task
);
7815 dprintk("<-- %s\n", __func__
);
7818 static size_t max_response_pages(struct nfs_server
*server
)
7820 u32 max_resp_sz
= server
->nfs_client
->cl_session
->fc_attrs
.max_resp_sz
;
7821 return nfs_page_array_len(0, max_resp_sz
);
7824 static void nfs4_free_pages(struct page
**pages
, size_t size
)
7831 for (i
= 0; i
< size
; i
++) {
7834 __free_page(pages
[i
]);
7839 static struct page
**nfs4_alloc_pages(size_t size
, gfp_t gfp_flags
)
7841 struct page
**pages
;
7844 pages
= kcalloc(size
, sizeof(struct page
*), gfp_flags
);
7846 dprintk("%s: can't alloc array of %zu pages\n", __func__
, size
);
7850 for (i
= 0; i
< size
; i
++) {
7851 pages
[i
] = alloc_page(gfp_flags
);
7853 dprintk("%s: failed to allocate page\n", __func__
);
7854 nfs4_free_pages(pages
, size
);
7862 static void nfs4_layoutget_release(void *calldata
)
7864 struct nfs4_layoutget
*lgp
= calldata
;
7865 struct inode
*inode
= lgp
->args
.inode
;
7866 struct nfs_server
*server
= NFS_SERVER(inode
);
7867 size_t max_pages
= max_response_pages(server
);
7869 dprintk("--> %s\n", __func__
);
7870 nfs4_free_pages(lgp
->args
.layout
.pages
, max_pages
);
7871 pnfs_put_layout_hdr(NFS_I(inode
)->layout
);
7872 put_nfs_open_context(lgp
->args
.ctx
);
7874 dprintk("<-- %s\n", __func__
);
7877 static const struct rpc_call_ops nfs4_layoutget_call_ops
= {
7878 .rpc_call_prepare
= nfs4_layoutget_prepare
,
7879 .rpc_call_done
= nfs4_layoutget_done
,
7880 .rpc_release
= nfs4_layoutget_release
,
7883 struct pnfs_layout_segment
*
7884 nfs4_proc_layoutget(struct nfs4_layoutget
*lgp
, gfp_t gfp_flags
)
7886 struct inode
*inode
= lgp
->args
.inode
;
7887 struct nfs_server
*server
= NFS_SERVER(inode
);
7888 size_t max_pages
= max_response_pages(server
);
7889 struct rpc_task
*task
;
7890 struct rpc_message msg
= {
7891 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LAYOUTGET
],
7892 .rpc_argp
= &lgp
->args
,
7893 .rpc_resp
= &lgp
->res
,
7894 .rpc_cred
= lgp
->cred
,
7896 struct rpc_task_setup task_setup_data
= {
7897 .rpc_client
= server
->client
,
7898 .rpc_message
= &msg
,
7899 .callback_ops
= &nfs4_layoutget_call_ops
,
7900 .callback_data
= lgp
,
7901 .flags
= RPC_TASK_ASYNC
,
7903 struct pnfs_layout_segment
*lseg
= NULL
;
7906 dprintk("--> %s\n", __func__
);
7908 /* nfs4_layoutget_release calls pnfs_put_layout_hdr */
7909 pnfs_get_layout_hdr(NFS_I(inode
)->layout
);
7911 lgp
->args
.layout
.pages
= nfs4_alloc_pages(max_pages
, gfp_flags
);
7912 if (!lgp
->args
.layout
.pages
) {
7913 nfs4_layoutget_release(lgp
);
7914 return ERR_PTR(-ENOMEM
);
7916 lgp
->args
.layout
.pglen
= max_pages
* PAGE_SIZE
;
7917 lgp
->args
.timestamp
= jiffies
;
7919 lgp
->res
.layoutp
= &lgp
->args
.layout
;
7920 lgp
->res
.seq_res
.sr_slot
= NULL
;
7921 nfs4_init_sequence(&lgp
->args
.seq_args
, &lgp
->res
.seq_res
, 0);
7923 task
= rpc_run_task(&task_setup_data
);
7925 return ERR_CAST(task
);
7926 status
= nfs4_wait_for_completion_rpc_task(task
);
7928 status
= task
->tk_status
;
7929 trace_nfs4_layoutget(lgp
->args
.ctx
,
7933 /* if layoutp->len is 0, nfs4_layoutget_prepare called rpc_exit */
7934 if (status
== 0 && lgp
->res
.layoutp
->len
)
7935 lseg
= pnfs_layout_process(lgp
);
7937 dprintk("<-- %s status=%d\n", __func__
, status
);
7939 return ERR_PTR(status
);
7944 nfs4_layoutreturn_prepare(struct rpc_task
*task
, void *calldata
)
7946 struct nfs4_layoutreturn
*lrp
= calldata
;
7948 dprintk("--> %s\n", __func__
);
7949 nfs41_setup_sequence(lrp
->clp
->cl_session
,
7950 &lrp
->args
.seq_args
,
7955 static void nfs4_layoutreturn_done(struct rpc_task
*task
, void *calldata
)
7957 struct nfs4_layoutreturn
*lrp
= calldata
;
7958 struct nfs_server
*server
;
7960 dprintk("--> %s\n", __func__
);
7962 if (!nfs41_sequence_done(task
, &lrp
->res
.seq_res
))
7965 server
= NFS_SERVER(lrp
->args
.inode
);
7966 switch (task
->tk_status
) {
7968 task
->tk_status
= 0;
7971 case -NFS4ERR_DELAY
:
7972 if (nfs4_async_handle_error(task
, server
, NULL
, NULL
) != -EAGAIN
)
7974 rpc_restart_call_prepare(task
);
7977 dprintk("<-- %s\n", __func__
);
7980 static void nfs4_layoutreturn_release(void *calldata
)
7982 struct nfs4_layoutreturn
*lrp
= calldata
;
7983 struct pnfs_layout_hdr
*lo
= lrp
->args
.layout
;
7986 dprintk("--> %s\n", __func__
);
7987 spin_lock(&lo
->plh_inode
->i_lock
);
7988 if (lrp
->res
.lrs_present
)
7989 pnfs_set_layout_stateid(lo
, &lrp
->res
.stateid
, true);
7990 pnfs_mark_matching_lsegs_invalid(lo
, &freeme
, &lrp
->args
.range
);
7991 pnfs_clear_layoutreturn_waitbit(lo
);
7992 lo
->plh_block_lgets
--;
7993 spin_unlock(&lo
->plh_inode
->i_lock
);
7994 pnfs_free_lseg_list(&freeme
);
7995 pnfs_put_layout_hdr(lrp
->args
.layout
);
7996 nfs_iput_and_deactive(lrp
->inode
);
7998 dprintk("<-- %s\n", __func__
);
8001 static const struct rpc_call_ops nfs4_layoutreturn_call_ops
= {
8002 .rpc_call_prepare
= nfs4_layoutreturn_prepare
,
8003 .rpc_call_done
= nfs4_layoutreturn_done
,
8004 .rpc_release
= nfs4_layoutreturn_release
,
8007 int nfs4_proc_layoutreturn(struct nfs4_layoutreturn
*lrp
, bool sync
)
8009 struct rpc_task
*task
;
8010 struct rpc_message msg
= {
8011 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LAYOUTRETURN
],
8012 .rpc_argp
= &lrp
->args
,
8013 .rpc_resp
= &lrp
->res
,
8014 .rpc_cred
= lrp
->cred
,
8016 struct rpc_task_setup task_setup_data
= {
8017 .rpc_client
= NFS_SERVER(lrp
->args
.inode
)->client
,
8018 .rpc_message
= &msg
,
8019 .callback_ops
= &nfs4_layoutreturn_call_ops
,
8020 .callback_data
= lrp
,
8024 dprintk("--> %s\n", __func__
);
8026 lrp
->inode
= nfs_igrab_and_active(lrp
->args
.inode
);
8028 nfs4_layoutreturn_release(lrp
);
8031 task_setup_data
.flags
|= RPC_TASK_ASYNC
;
8033 nfs4_init_sequence(&lrp
->args
.seq_args
, &lrp
->res
.seq_res
, 1);
8034 task
= rpc_run_task(&task_setup_data
);
8036 return PTR_ERR(task
);
8038 status
= task
->tk_status
;
8039 trace_nfs4_layoutreturn(lrp
->args
.inode
, status
);
8040 dprintk("<-- %s status=%d\n", __func__
, status
);
8046 _nfs4_proc_getdeviceinfo(struct nfs_server
*server
,
8047 struct pnfs_device
*pdev
,
8048 struct rpc_cred
*cred
)
8050 struct nfs4_getdeviceinfo_args args
= {
8052 .notify_types
= NOTIFY_DEVICEID4_CHANGE
|
8053 NOTIFY_DEVICEID4_DELETE
,
8055 struct nfs4_getdeviceinfo_res res
= {
8058 struct rpc_message msg
= {
8059 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETDEVICEINFO
],
8066 dprintk("--> %s\n", __func__
);
8067 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
8068 if (res
.notification
& ~args
.notify_types
)
8069 dprintk("%s: unsupported notification\n", __func__
);
8070 if (res
.notification
!= args
.notify_types
)
8073 dprintk("<-- %s status=%d\n", __func__
, status
);
8078 int nfs4_proc_getdeviceinfo(struct nfs_server
*server
,
8079 struct pnfs_device
*pdev
,
8080 struct rpc_cred
*cred
)
8082 struct nfs4_exception exception
= { };
8086 err
= nfs4_handle_exception(server
,
8087 _nfs4_proc_getdeviceinfo(server
, pdev
, cred
),
8089 } while (exception
.retry
);
8092 EXPORT_SYMBOL_GPL(nfs4_proc_getdeviceinfo
);
8094 static void nfs4_layoutcommit_prepare(struct rpc_task
*task
, void *calldata
)
8096 struct nfs4_layoutcommit_data
*data
= calldata
;
8097 struct nfs_server
*server
= NFS_SERVER(data
->args
.inode
);
8098 struct nfs4_session
*session
= nfs4_get_session(server
);
8100 nfs41_setup_sequence(session
,
8101 &data
->args
.seq_args
,
8107 nfs4_layoutcommit_done(struct rpc_task
*task
, void *calldata
)
8109 struct nfs4_layoutcommit_data
*data
= calldata
;
8110 struct nfs_server
*server
= NFS_SERVER(data
->args
.inode
);
8112 if (!nfs41_sequence_done(task
, &data
->res
.seq_res
))
8115 switch (task
->tk_status
) { /* Just ignore these failures */
8116 case -NFS4ERR_DELEG_REVOKED
: /* layout was recalled */
8117 case -NFS4ERR_BADIOMODE
: /* no IOMODE_RW layout for range */
8118 case -NFS4ERR_BADLAYOUT
: /* no layout */
8119 case -NFS4ERR_GRACE
: /* loca_recalim always false */
8120 task
->tk_status
= 0;
8124 if (nfs4_async_handle_error(task
, server
, NULL
, NULL
) == -EAGAIN
) {
8125 rpc_restart_call_prepare(task
);
8131 static void nfs4_layoutcommit_release(void *calldata
)
8133 struct nfs4_layoutcommit_data
*data
= calldata
;
8135 pnfs_cleanup_layoutcommit(data
);
8136 nfs_post_op_update_inode_force_wcc(data
->args
.inode
,
8138 put_rpccred(data
->cred
);
8139 nfs_iput_and_deactive(data
->inode
);
8143 static const struct rpc_call_ops nfs4_layoutcommit_ops
= {
8144 .rpc_call_prepare
= nfs4_layoutcommit_prepare
,
8145 .rpc_call_done
= nfs4_layoutcommit_done
,
8146 .rpc_release
= nfs4_layoutcommit_release
,
8150 nfs4_proc_layoutcommit(struct nfs4_layoutcommit_data
*data
, bool sync
)
8152 struct rpc_message msg
= {
8153 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LAYOUTCOMMIT
],
8154 .rpc_argp
= &data
->args
,
8155 .rpc_resp
= &data
->res
,
8156 .rpc_cred
= data
->cred
,
8158 struct rpc_task_setup task_setup_data
= {
8159 .task
= &data
->task
,
8160 .rpc_client
= NFS_CLIENT(data
->args
.inode
),
8161 .rpc_message
= &msg
,
8162 .callback_ops
= &nfs4_layoutcommit_ops
,
8163 .callback_data
= data
,
8165 struct rpc_task
*task
;
8168 dprintk("NFS: initiating layoutcommit call. sync %d "
8169 "lbw: %llu inode %lu\n", sync
,
8170 data
->args
.lastbytewritten
,
8171 data
->args
.inode
->i_ino
);
8174 data
->inode
= nfs_igrab_and_active(data
->args
.inode
);
8175 if (data
->inode
== NULL
) {
8176 nfs4_layoutcommit_release(data
);
8179 task_setup_data
.flags
= RPC_TASK_ASYNC
;
8181 nfs4_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
8182 task
= rpc_run_task(&task_setup_data
);
8184 return PTR_ERR(task
);
8186 status
= task
->tk_status
;
8187 trace_nfs4_layoutcommit(data
->args
.inode
, status
);
8188 dprintk("%s: status %d\n", __func__
, status
);
8194 * Use the state managment nfs_client cl_rpcclient, which uses krb5i (if
8195 * possible) as per RFC3530bis and RFC5661 Security Considerations sections
8198 _nfs41_proc_secinfo_no_name(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
8199 struct nfs_fsinfo
*info
,
8200 struct nfs4_secinfo_flavors
*flavors
, bool use_integrity
)
8202 struct nfs41_secinfo_no_name_args args
= {
8203 .style
= SECINFO_STYLE_CURRENT_FH
,
8205 struct nfs4_secinfo_res res
= {
8208 struct rpc_message msg
= {
8209 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SECINFO_NO_NAME
],
8213 struct rpc_clnt
*clnt
= server
->client
;
8214 struct rpc_cred
*cred
= NULL
;
8217 if (use_integrity
) {
8218 clnt
= server
->nfs_client
->cl_rpcclient
;
8219 cred
= nfs4_get_clid_cred(server
->nfs_client
);
8220 msg
.rpc_cred
= cred
;
8223 dprintk("--> %s\n", __func__
);
8224 status
= nfs4_call_sync(clnt
, server
, &msg
, &args
.seq_args
,
8226 dprintk("<-- %s status=%d\n", __func__
, status
);
8235 nfs41_proc_secinfo_no_name(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
8236 struct nfs_fsinfo
*info
, struct nfs4_secinfo_flavors
*flavors
)
8238 struct nfs4_exception exception
= { };
8241 /* first try using integrity protection */
8242 err
= -NFS4ERR_WRONGSEC
;
8244 /* try to use integrity protection with machine cred */
8245 if (_nfs4_is_integrity_protected(server
->nfs_client
))
8246 err
= _nfs41_proc_secinfo_no_name(server
, fhandle
, info
,
8250 * if unable to use integrity protection, or SECINFO with
8251 * integrity protection returns NFS4ERR_WRONGSEC (which is
8252 * disallowed by spec, but exists in deployed servers) use
8253 * the current filesystem's rpc_client and the user cred.
8255 if (err
== -NFS4ERR_WRONGSEC
)
8256 err
= _nfs41_proc_secinfo_no_name(server
, fhandle
, info
,
8261 case -NFS4ERR_WRONGSEC
:
8265 err
= nfs4_handle_exception(server
, err
, &exception
);
8267 } while (exception
.retry
);
8273 nfs41_find_root_sec(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
8274 struct nfs_fsinfo
*info
)
8278 rpc_authflavor_t flavor
= RPC_AUTH_MAXFLAVOR
;
8279 struct nfs4_secinfo_flavors
*flavors
;
8280 struct nfs4_secinfo4
*secinfo
;
8283 page
= alloc_page(GFP_KERNEL
);
8289 flavors
= page_address(page
);
8290 err
= nfs41_proc_secinfo_no_name(server
, fhandle
, info
, flavors
);
8293 * Fall back on "guess and check" method if
8294 * the server doesn't support SECINFO_NO_NAME
8296 if (err
== -NFS4ERR_WRONGSEC
|| err
== -ENOTSUPP
) {
8297 err
= nfs4_find_root_sec(server
, fhandle
, info
);
8303 for (i
= 0; i
< flavors
->num_flavors
; i
++) {
8304 secinfo
= &flavors
->flavors
[i
];
8306 switch (secinfo
->flavor
) {
8310 flavor
= rpcauth_get_pseudoflavor(secinfo
->flavor
,
8311 &secinfo
->flavor_info
);
8314 flavor
= RPC_AUTH_MAXFLAVOR
;
8318 if (!nfs_auth_info_match(&server
->auth_info
, flavor
))
8319 flavor
= RPC_AUTH_MAXFLAVOR
;
8321 if (flavor
!= RPC_AUTH_MAXFLAVOR
) {
8322 err
= nfs4_lookup_root_sec(server
, fhandle
,
8329 if (flavor
== RPC_AUTH_MAXFLAVOR
)
8340 static int _nfs41_test_stateid(struct nfs_server
*server
,
8341 nfs4_stateid
*stateid
,
8342 struct rpc_cred
*cred
)
8345 struct nfs41_test_stateid_args args
= {
8348 struct nfs41_test_stateid_res res
;
8349 struct rpc_message msg
= {
8350 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_TEST_STATEID
],
8355 struct rpc_clnt
*rpc_client
= server
->client
;
8357 nfs4_state_protect(server
->nfs_client
, NFS_SP4_MACH_CRED_STATEID
,
8360 dprintk("NFS call test_stateid %p\n", stateid
);
8361 nfs4_init_sequence(&args
.seq_args
, &res
.seq_res
, 0);
8362 nfs4_set_sequence_privileged(&args
.seq_args
);
8363 status
= nfs4_call_sync_sequence(rpc_client
, server
, &msg
,
8364 &args
.seq_args
, &res
.seq_res
);
8365 if (status
!= NFS_OK
) {
8366 dprintk("NFS reply test_stateid: failed, %d\n", status
);
8369 dprintk("NFS reply test_stateid: succeeded, %d\n", -res
.status
);
8374 * nfs41_test_stateid - perform a TEST_STATEID operation
8376 * @server: server / transport on which to perform the operation
8377 * @stateid: state ID to test
8380 * Returns NFS_OK if the server recognizes that "stateid" is valid.
8381 * Otherwise a negative NFS4ERR value is returned if the operation
8382 * failed or the state ID is not currently valid.
8384 static int nfs41_test_stateid(struct nfs_server
*server
,
8385 nfs4_stateid
*stateid
,
8386 struct rpc_cred
*cred
)
8388 struct nfs4_exception exception
= { };
8391 err
= _nfs41_test_stateid(server
, stateid
, cred
);
8392 if (err
!= -NFS4ERR_DELAY
)
8394 nfs4_handle_exception(server
, err
, &exception
);
8395 } while (exception
.retry
);
8399 struct nfs_free_stateid_data
{
8400 struct nfs_server
*server
;
8401 struct nfs41_free_stateid_args args
;
8402 struct nfs41_free_stateid_res res
;
8405 static void nfs41_free_stateid_prepare(struct rpc_task
*task
, void *calldata
)
8407 struct nfs_free_stateid_data
*data
= calldata
;
8408 nfs41_setup_sequence(nfs4_get_session(data
->server
),
8409 &data
->args
.seq_args
,
8414 static void nfs41_free_stateid_done(struct rpc_task
*task
, void *calldata
)
8416 struct nfs_free_stateid_data
*data
= calldata
;
8418 nfs41_sequence_done(task
, &data
->res
.seq_res
);
8420 switch (task
->tk_status
) {
8421 case -NFS4ERR_DELAY
:
8422 if (nfs4_async_handle_error(task
, data
->server
, NULL
, NULL
) == -EAGAIN
)
8423 rpc_restart_call_prepare(task
);
8427 static void nfs41_free_stateid_release(void *calldata
)
8432 static const struct rpc_call_ops nfs41_free_stateid_ops
= {
8433 .rpc_call_prepare
= nfs41_free_stateid_prepare
,
8434 .rpc_call_done
= nfs41_free_stateid_done
,
8435 .rpc_release
= nfs41_free_stateid_release
,
8438 static struct rpc_task
*_nfs41_free_stateid(struct nfs_server
*server
,
8439 nfs4_stateid
*stateid
,
8440 struct rpc_cred
*cred
,
8443 struct rpc_message msg
= {
8444 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FREE_STATEID
],
8447 struct rpc_task_setup task_setup
= {
8448 .rpc_client
= server
->client
,
8449 .rpc_message
= &msg
,
8450 .callback_ops
= &nfs41_free_stateid_ops
,
8451 .flags
= RPC_TASK_ASYNC
,
8453 struct nfs_free_stateid_data
*data
;
8455 nfs4_state_protect(server
->nfs_client
, NFS_SP4_MACH_CRED_STATEID
,
8456 &task_setup
.rpc_client
, &msg
);
8458 dprintk("NFS call free_stateid %p\n", stateid
);
8459 data
= kmalloc(sizeof(*data
), GFP_NOFS
);
8461 return ERR_PTR(-ENOMEM
);
8462 data
->server
= server
;
8463 nfs4_stateid_copy(&data
->args
.stateid
, stateid
);
8465 task_setup
.callback_data
= data
;
8467 msg
.rpc_argp
= &data
->args
;
8468 msg
.rpc_resp
= &data
->res
;
8469 nfs4_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 0);
8471 nfs4_set_sequence_privileged(&data
->args
.seq_args
);
8473 return rpc_run_task(&task_setup
);
8477 * nfs41_free_stateid - perform a FREE_STATEID operation
8479 * @server: server / transport on which to perform the operation
8480 * @stateid: state ID to release
8483 * Returns NFS_OK if the server freed "stateid". Otherwise a
8484 * negative NFS4ERR value is returned.
8486 static int nfs41_free_stateid(struct nfs_server
*server
,
8487 nfs4_stateid
*stateid
,
8488 struct rpc_cred
*cred
)
8490 struct rpc_task
*task
;
8493 task
= _nfs41_free_stateid(server
, stateid
, cred
, true);
8495 return PTR_ERR(task
);
8496 ret
= rpc_wait_for_completion_task(task
);
8498 ret
= task
->tk_status
;
8504 nfs41_free_lock_state(struct nfs_server
*server
, struct nfs4_lock_state
*lsp
)
8506 struct rpc_task
*task
;
8507 struct rpc_cred
*cred
= lsp
->ls_state
->owner
->so_cred
;
8509 task
= _nfs41_free_stateid(server
, &lsp
->ls_stateid
, cred
, false);
8510 nfs4_free_lock_state(server
, lsp
);
8516 static bool nfs41_match_stateid(const nfs4_stateid
*s1
,
8517 const nfs4_stateid
*s2
)
8519 if (memcmp(s1
->other
, s2
->other
, sizeof(s1
->other
)) != 0)
8522 if (s1
->seqid
== s2
->seqid
)
8524 if (s1
->seqid
== 0 || s2
->seqid
== 0)
8530 #endif /* CONFIG_NFS_V4_1 */
8532 static bool nfs4_match_stateid(const nfs4_stateid
*s1
,
8533 const nfs4_stateid
*s2
)
8535 return nfs4_stateid_match(s1
, s2
);
8539 static const struct nfs4_state_recovery_ops nfs40_reboot_recovery_ops
= {
8540 .owner_flag_bit
= NFS_OWNER_RECLAIM_REBOOT
,
8541 .state_flag_bit
= NFS_STATE_RECLAIM_REBOOT
,
8542 .recover_open
= nfs4_open_reclaim
,
8543 .recover_lock
= nfs4_lock_reclaim
,
8544 .establish_clid
= nfs4_init_clientid
,
8545 .detect_trunking
= nfs40_discover_server_trunking
,
8548 #if defined(CONFIG_NFS_V4_1)
8549 static const struct nfs4_state_recovery_ops nfs41_reboot_recovery_ops
= {
8550 .owner_flag_bit
= NFS_OWNER_RECLAIM_REBOOT
,
8551 .state_flag_bit
= NFS_STATE_RECLAIM_REBOOT
,
8552 .recover_open
= nfs4_open_reclaim
,
8553 .recover_lock
= nfs4_lock_reclaim
,
8554 .establish_clid
= nfs41_init_clientid
,
8555 .reclaim_complete
= nfs41_proc_reclaim_complete
,
8556 .detect_trunking
= nfs41_discover_server_trunking
,
8558 #endif /* CONFIG_NFS_V4_1 */
8560 static const struct nfs4_state_recovery_ops nfs40_nograce_recovery_ops
= {
8561 .owner_flag_bit
= NFS_OWNER_RECLAIM_NOGRACE
,
8562 .state_flag_bit
= NFS_STATE_RECLAIM_NOGRACE
,
8563 .recover_open
= nfs40_open_expired
,
8564 .recover_lock
= nfs4_lock_expired
,
8565 .establish_clid
= nfs4_init_clientid
,
8568 #if defined(CONFIG_NFS_V4_1)
8569 static const struct nfs4_state_recovery_ops nfs41_nograce_recovery_ops
= {
8570 .owner_flag_bit
= NFS_OWNER_RECLAIM_NOGRACE
,
8571 .state_flag_bit
= NFS_STATE_RECLAIM_NOGRACE
,
8572 .recover_open
= nfs41_open_expired
,
8573 .recover_lock
= nfs41_lock_expired
,
8574 .establish_clid
= nfs41_init_clientid
,
8576 #endif /* CONFIG_NFS_V4_1 */
8578 static const struct nfs4_state_maintenance_ops nfs40_state_renewal_ops
= {
8579 .sched_state_renewal
= nfs4_proc_async_renew
,
8580 .get_state_renewal_cred_locked
= nfs4_get_renew_cred_locked
,
8581 .renew_lease
= nfs4_proc_renew
,
8584 #if defined(CONFIG_NFS_V4_1)
8585 static const struct nfs4_state_maintenance_ops nfs41_state_renewal_ops
= {
8586 .sched_state_renewal
= nfs41_proc_async_sequence
,
8587 .get_state_renewal_cred_locked
= nfs4_get_machine_cred_locked
,
8588 .renew_lease
= nfs4_proc_sequence
,
8592 static const struct nfs4_mig_recovery_ops nfs40_mig_recovery_ops
= {
8593 .get_locations
= _nfs40_proc_get_locations
,
8594 .fsid_present
= _nfs40_proc_fsid_present
,
8597 #if defined(CONFIG_NFS_V4_1)
8598 static const struct nfs4_mig_recovery_ops nfs41_mig_recovery_ops
= {
8599 .get_locations
= _nfs41_proc_get_locations
,
8600 .fsid_present
= _nfs41_proc_fsid_present
,
8602 #endif /* CONFIG_NFS_V4_1 */
8604 static const struct nfs4_minor_version_ops nfs_v4_0_minor_ops
= {
8606 .init_caps
= NFS_CAP_READDIRPLUS
8607 | NFS_CAP_ATOMIC_OPEN
8608 | NFS_CAP_POSIX_LOCK
,
8609 .init_client
= nfs40_init_client
,
8610 .shutdown_client
= nfs40_shutdown_client
,
8611 .match_stateid
= nfs4_match_stateid
,
8612 .find_root_sec
= nfs4_find_root_sec
,
8613 .free_lock_state
= nfs4_release_lockowner
,
8614 .alloc_seqid
= nfs_alloc_seqid
,
8615 .call_sync_ops
= &nfs40_call_sync_ops
,
8616 .reboot_recovery_ops
= &nfs40_reboot_recovery_ops
,
8617 .nograce_recovery_ops
= &nfs40_nograce_recovery_ops
,
8618 .state_renewal_ops
= &nfs40_state_renewal_ops
,
8619 .mig_recovery_ops
= &nfs40_mig_recovery_ops
,
8622 #if defined(CONFIG_NFS_V4_1)
8623 static struct nfs_seqid
*
8624 nfs_alloc_no_seqid(struct nfs_seqid_counter
*arg1
, gfp_t arg2
)
8629 static const struct nfs4_minor_version_ops nfs_v4_1_minor_ops
= {
8631 .init_caps
= NFS_CAP_READDIRPLUS
8632 | NFS_CAP_ATOMIC_OPEN
8633 | NFS_CAP_POSIX_LOCK
8634 | NFS_CAP_STATEID_NFSV41
8635 | NFS_CAP_ATOMIC_OPEN_V1
,
8636 .init_client
= nfs41_init_client
,
8637 .shutdown_client
= nfs41_shutdown_client
,
8638 .match_stateid
= nfs41_match_stateid
,
8639 .find_root_sec
= nfs41_find_root_sec
,
8640 .free_lock_state
= nfs41_free_lock_state
,
8641 .alloc_seqid
= nfs_alloc_no_seqid
,
8642 .call_sync_ops
= &nfs41_call_sync_ops
,
8643 .reboot_recovery_ops
= &nfs41_reboot_recovery_ops
,
8644 .nograce_recovery_ops
= &nfs41_nograce_recovery_ops
,
8645 .state_renewal_ops
= &nfs41_state_renewal_ops
,
8646 .mig_recovery_ops
= &nfs41_mig_recovery_ops
,
8650 #if defined(CONFIG_NFS_V4_2)
8651 static const struct nfs4_minor_version_ops nfs_v4_2_minor_ops
= {
8653 .init_caps
= NFS_CAP_READDIRPLUS
8654 | NFS_CAP_ATOMIC_OPEN
8655 | NFS_CAP_POSIX_LOCK
8656 | NFS_CAP_STATEID_NFSV41
8657 | NFS_CAP_ATOMIC_OPEN_V1
8659 | NFS_CAP_DEALLOCATE
8661 | NFS_CAP_LAYOUTSTATS
,
8662 .init_client
= nfs41_init_client
,
8663 .shutdown_client
= nfs41_shutdown_client
,
8664 .match_stateid
= nfs41_match_stateid
,
8665 .find_root_sec
= nfs41_find_root_sec
,
8666 .free_lock_state
= nfs41_free_lock_state
,
8667 .call_sync_ops
= &nfs41_call_sync_ops
,
8668 .alloc_seqid
= nfs_alloc_no_seqid
,
8669 .reboot_recovery_ops
= &nfs41_reboot_recovery_ops
,
8670 .nograce_recovery_ops
= &nfs41_nograce_recovery_ops
,
8671 .state_renewal_ops
= &nfs41_state_renewal_ops
,
8672 .mig_recovery_ops
= &nfs41_mig_recovery_ops
,
8676 const struct nfs4_minor_version_ops
*nfs_v4_minor_ops
[] = {
8677 [0] = &nfs_v4_0_minor_ops
,
8678 #if defined(CONFIG_NFS_V4_1)
8679 [1] = &nfs_v4_1_minor_ops
,
8681 #if defined(CONFIG_NFS_V4_2)
8682 [2] = &nfs_v4_2_minor_ops
,
8686 static const struct inode_operations nfs4_dir_inode_operations
= {
8687 .create
= nfs_create
,
8688 .lookup
= nfs_lookup
,
8689 .atomic_open
= nfs_atomic_open
,
8691 .unlink
= nfs_unlink
,
8692 .symlink
= nfs_symlink
,
8696 .rename
= nfs_rename
,
8697 .permission
= nfs_permission
,
8698 .getattr
= nfs_getattr
,
8699 .setattr
= nfs_setattr
,
8700 .getxattr
= generic_getxattr
,
8701 .setxattr
= generic_setxattr
,
8702 .listxattr
= generic_listxattr
,
8703 .removexattr
= generic_removexattr
,
8706 static const struct inode_operations nfs4_file_inode_operations
= {
8707 .permission
= nfs_permission
,
8708 .getattr
= nfs_getattr
,
8709 .setattr
= nfs_setattr
,
8710 .getxattr
= generic_getxattr
,
8711 .setxattr
= generic_setxattr
,
8712 .listxattr
= generic_listxattr
,
8713 .removexattr
= generic_removexattr
,
8716 const struct nfs_rpc_ops nfs_v4_clientops
= {
8717 .version
= 4, /* protocol version */
8718 .dentry_ops
= &nfs4_dentry_operations
,
8719 .dir_inode_ops
= &nfs4_dir_inode_operations
,
8720 .file_inode_ops
= &nfs4_file_inode_operations
,
8721 .file_ops
= &nfs4_file_operations
,
8722 .getroot
= nfs4_proc_get_root
,
8723 .submount
= nfs4_submount
,
8724 .try_mount
= nfs4_try_mount
,
8725 .getattr
= nfs4_proc_getattr
,
8726 .setattr
= nfs4_proc_setattr
,
8727 .lookup
= nfs4_proc_lookup
,
8728 .access
= nfs4_proc_access
,
8729 .readlink
= nfs4_proc_readlink
,
8730 .create
= nfs4_proc_create
,
8731 .remove
= nfs4_proc_remove
,
8732 .unlink_setup
= nfs4_proc_unlink_setup
,
8733 .unlink_rpc_prepare
= nfs4_proc_unlink_rpc_prepare
,
8734 .unlink_done
= nfs4_proc_unlink_done
,
8735 .rename_setup
= nfs4_proc_rename_setup
,
8736 .rename_rpc_prepare
= nfs4_proc_rename_rpc_prepare
,
8737 .rename_done
= nfs4_proc_rename_done
,
8738 .link
= nfs4_proc_link
,
8739 .symlink
= nfs4_proc_symlink
,
8740 .mkdir
= nfs4_proc_mkdir
,
8741 .rmdir
= nfs4_proc_remove
,
8742 .readdir
= nfs4_proc_readdir
,
8743 .mknod
= nfs4_proc_mknod
,
8744 .statfs
= nfs4_proc_statfs
,
8745 .fsinfo
= nfs4_proc_fsinfo
,
8746 .pathconf
= nfs4_proc_pathconf
,
8747 .set_capabilities
= nfs4_server_capabilities
,
8748 .decode_dirent
= nfs4_decode_dirent
,
8749 .pgio_rpc_prepare
= nfs4_proc_pgio_rpc_prepare
,
8750 .read_setup
= nfs4_proc_read_setup
,
8751 .read_done
= nfs4_read_done
,
8752 .write_setup
= nfs4_proc_write_setup
,
8753 .write_done
= nfs4_write_done
,
8754 .commit_setup
= nfs4_proc_commit_setup
,
8755 .commit_rpc_prepare
= nfs4_proc_commit_rpc_prepare
,
8756 .commit_done
= nfs4_commit_done
,
8757 .lock
= nfs4_proc_lock
,
8758 .clear_acl_cache
= nfs4_zap_acl_attr
,
8759 .close_context
= nfs4_close_context
,
8760 .open_context
= nfs4_atomic_open
,
8761 .have_delegation
= nfs4_have_delegation
,
8762 .return_delegation
= nfs4_inode_return_delegation
,
8763 .alloc_client
= nfs4_alloc_client
,
8764 .init_client
= nfs4_init_client
,
8765 .free_client
= nfs4_free_client
,
8766 .create_server
= nfs4_create_server
,
8767 .clone_server
= nfs_clone_server
,
8770 static const struct xattr_handler nfs4_xattr_nfs4_acl_handler
= {
8771 .prefix
= XATTR_NAME_NFSV4_ACL
,
8772 .list
= nfs4_xattr_list_nfs4_acl
,
8773 .get
= nfs4_xattr_get_nfs4_acl
,
8774 .set
= nfs4_xattr_set_nfs4_acl
,
8777 const struct xattr_handler
*nfs4_xattr_handlers
[] = {
8778 &nfs4_xattr_nfs4_acl_handler
,
8779 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
8780 &nfs4_xattr_nfs4_label_handler
,