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 bool nfs4_mode_match_open_stateid(struct nfs4_state
*state
,
1133 switch(fmode
& (FMODE_READ
|FMODE_WRITE
)) {
1134 case FMODE_READ
|FMODE_WRITE
:
1135 return state
->n_rdwr
!= 0;
1137 return state
->n_wronly
!= 0;
1139 return state
->n_rdonly
!= 0;
1145 static int can_open_cached(struct nfs4_state
*state
, fmode_t mode
, int open_mode
)
1149 if (open_mode
& (O_EXCL
|O_TRUNC
))
1151 switch (mode
& (FMODE_READ
|FMODE_WRITE
)) {
1153 ret
|= test_bit(NFS_O_RDONLY_STATE
, &state
->flags
) != 0
1154 && state
->n_rdonly
!= 0;
1157 ret
|= test_bit(NFS_O_WRONLY_STATE
, &state
->flags
) != 0
1158 && state
->n_wronly
!= 0;
1160 case FMODE_READ
|FMODE_WRITE
:
1161 ret
|= test_bit(NFS_O_RDWR_STATE
, &state
->flags
) != 0
1162 && state
->n_rdwr
!= 0;
1168 static int can_open_delegated(struct nfs_delegation
*delegation
, fmode_t fmode
,
1169 enum open_claim_type4 claim
)
1171 if (delegation
== NULL
)
1173 if ((delegation
->type
& fmode
) != fmode
)
1175 if (test_bit(NFS_DELEGATION_RETURNING
, &delegation
->flags
))
1178 case NFS4_OPEN_CLAIM_NULL
:
1179 case NFS4_OPEN_CLAIM_FH
:
1181 case NFS4_OPEN_CLAIM_PREVIOUS
:
1182 if (!test_bit(NFS_DELEGATION_NEED_RECLAIM
, &delegation
->flags
))
1187 nfs_mark_delegation_referenced(delegation
);
1191 static void update_open_stateflags(struct nfs4_state
*state
, fmode_t fmode
)
1200 case FMODE_READ
|FMODE_WRITE
:
1203 nfs4_state_set_mode_locked(state
, state
->state
| fmode
);
1206 static void nfs_test_and_clear_all_open_stateid(struct nfs4_state
*state
)
1208 struct nfs_client
*clp
= state
->owner
->so_server
->nfs_client
;
1209 bool need_recover
= false;
1211 if (test_and_clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
) && state
->n_rdonly
)
1212 need_recover
= true;
1213 if (test_and_clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
) && state
->n_wronly
)
1214 need_recover
= true;
1215 if (test_and_clear_bit(NFS_O_RDWR_STATE
, &state
->flags
) && state
->n_rdwr
)
1216 need_recover
= true;
1218 nfs4_state_mark_reclaim_nograce(clp
, state
);
1221 static bool nfs_need_update_open_stateid(struct nfs4_state
*state
,
1222 nfs4_stateid
*stateid
)
1224 if (test_and_set_bit(NFS_OPEN_STATE
, &state
->flags
) == 0)
1226 if (!nfs4_stateid_match_other(stateid
, &state
->open_stateid
)) {
1227 nfs_test_and_clear_all_open_stateid(state
);
1230 if (nfs4_stateid_is_newer(stateid
, &state
->open_stateid
))
1235 static void nfs_resync_open_stateid_locked(struct nfs4_state
*state
)
1237 if (!(state
->n_wronly
|| state
->n_rdonly
|| state
->n_rdwr
))
1239 if (state
->n_wronly
)
1240 set_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1241 if (state
->n_rdonly
)
1242 set_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1244 set_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1245 set_bit(NFS_OPEN_STATE
, &state
->flags
);
1248 static void nfs_clear_open_stateid_locked(struct nfs4_state
*state
,
1249 nfs4_stateid
*arg_stateid
,
1250 nfs4_stateid
*stateid
, fmode_t fmode
)
1252 clear_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1253 switch (fmode
& (FMODE_READ
|FMODE_WRITE
)) {
1255 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1258 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1261 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1262 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1263 clear_bit(NFS_OPEN_STATE
, &state
->flags
);
1265 if (stateid
== NULL
)
1267 /* Handle races with OPEN */
1268 if (!nfs4_stateid_match_other(arg_stateid
, &state
->open_stateid
) ||
1269 (nfs4_stateid_match_other(stateid
, &state
->open_stateid
) &&
1270 !nfs4_stateid_is_newer(stateid
, &state
->open_stateid
))) {
1271 nfs_resync_open_stateid_locked(state
);
1274 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0)
1275 nfs4_stateid_copy(&state
->stateid
, stateid
);
1276 nfs4_stateid_copy(&state
->open_stateid
, stateid
);
1279 static void nfs_clear_open_stateid(struct nfs4_state
*state
,
1280 nfs4_stateid
*arg_stateid
,
1281 nfs4_stateid
*stateid
, fmode_t fmode
)
1283 write_seqlock(&state
->seqlock
);
1284 nfs_clear_open_stateid_locked(state
, arg_stateid
, stateid
, fmode
);
1285 write_sequnlock(&state
->seqlock
);
1286 if (test_bit(NFS_STATE_RECLAIM_NOGRACE
, &state
->flags
))
1287 nfs4_schedule_state_manager(state
->owner
->so_server
->nfs_client
);
1290 static void nfs_set_open_stateid_locked(struct nfs4_state
*state
, nfs4_stateid
*stateid
, fmode_t fmode
)
1294 set_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1297 set_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1299 case FMODE_READ
|FMODE_WRITE
:
1300 set_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1302 if (!nfs_need_update_open_stateid(state
, stateid
))
1304 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0)
1305 nfs4_stateid_copy(&state
->stateid
, stateid
);
1306 nfs4_stateid_copy(&state
->open_stateid
, stateid
);
1309 static void __update_open_stateid(struct nfs4_state
*state
, nfs4_stateid
*open_stateid
, const nfs4_stateid
*deleg_stateid
, fmode_t fmode
)
1312 * Protect the call to nfs4_state_set_mode_locked and
1313 * serialise the stateid update
1315 write_seqlock(&state
->seqlock
);
1316 if (deleg_stateid
!= NULL
) {
1317 nfs4_stateid_copy(&state
->stateid
, deleg_stateid
);
1318 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1320 if (open_stateid
!= NULL
)
1321 nfs_set_open_stateid_locked(state
, open_stateid
, fmode
);
1322 write_sequnlock(&state
->seqlock
);
1323 spin_lock(&state
->owner
->so_lock
);
1324 update_open_stateflags(state
, fmode
);
1325 spin_unlock(&state
->owner
->so_lock
);
1328 static int update_open_stateid(struct nfs4_state
*state
, nfs4_stateid
*open_stateid
, nfs4_stateid
*delegation
, fmode_t fmode
)
1330 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
1331 struct nfs_delegation
*deleg_cur
;
1334 fmode
&= (FMODE_READ
|FMODE_WRITE
);
1337 deleg_cur
= rcu_dereference(nfsi
->delegation
);
1338 if (deleg_cur
== NULL
)
1341 spin_lock(&deleg_cur
->lock
);
1342 if (rcu_dereference(nfsi
->delegation
) != deleg_cur
||
1343 test_bit(NFS_DELEGATION_RETURNING
, &deleg_cur
->flags
) ||
1344 (deleg_cur
->type
& fmode
) != fmode
)
1345 goto no_delegation_unlock
;
1347 if (delegation
== NULL
)
1348 delegation
= &deleg_cur
->stateid
;
1349 else if (!nfs4_stateid_match(&deleg_cur
->stateid
, delegation
))
1350 goto no_delegation_unlock
;
1352 nfs_mark_delegation_referenced(deleg_cur
);
1353 __update_open_stateid(state
, open_stateid
, &deleg_cur
->stateid
, fmode
);
1355 no_delegation_unlock
:
1356 spin_unlock(&deleg_cur
->lock
);
1360 if (!ret
&& open_stateid
!= NULL
) {
1361 __update_open_stateid(state
, open_stateid
, NULL
, fmode
);
1364 if (test_bit(NFS_STATE_RECLAIM_NOGRACE
, &state
->flags
))
1365 nfs4_schedule_state_manager(state
->owner
->so_server
->nfs_client
);
1370 static bool nfs4_update_lock_stateid(struct nfs4_lock_state
*lsp
,
1371 const nfs4_stateid
*stateid
)
1373 struct nfs4_state
*state
= lsp
->ls_state
;
1376 spin_lock(&state
->state_lock
);
1377 if (!nfs4_stateid_match_other(stateid
, &lsp
->ls_stateid
))
1379 if (!nfs4_stateid_is_newer(stateid
, &lsp
->ls_stateid
))
1381 nfs4_stateid_copy(&lsp
->ls_stateid
, stateid
);
1384 spin_unlock(&state
->state_lock
);
1388 static void nfs4_return_incompatible_delegation(struct inode
*inode
, fmode_t fmode
)
1390 struct nfs_delegation
*delegation
;
1393 delegation
= rcu_dereference(NFS_I(inode
)->delegation
);
1394 if (delegation
== NULL
|| (delegation
->type
& fmode
) == fmode
) {
1399 nfs4_inode_return_delegation(inode
);
1402 static struct nfs4_state
*nfs4_try_open_cached(struct nfs4_opendata
*opendata
)
1404 struct nfs4_state
*state
= opendata
->state
;
1405 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
1406 struct nfs_delegation
*delegation
;
1407 int open_mode
= opendata
->o_arg
.open_flags
;
1408 fmode_t fmode
= opendata
->o_arg
.fmode
;
1409 enum open_claim_type4 claim
= opendata
->o_arg
.claim
;
1410 nfs4_stateid stateid
;
1414 spin_lock(&state
->owner
->so_lock
);
1415 if (can_open_cached(state
, fmode
, open_mode
)) {
1416 update_open_stateflags(state
, fmode
);
1417 spin_unlock(&state
->owner
->so_lock
);
1418 goto out_return_state
;
1420 spin_unlock(&state
->owner
->so_lock
);
1422 delegation
= rcu_dereference(nfsi
->delegation
);
1423 if (!can_open_delegated(delegation
, fmode
, claim
)) {
1427 /* Save the delegation */
1428 nfs4_stateid_copy(&stateid
, &delegation
->stateid
);
1430 nfs_release_seqid(opendata
->o_arg
.seqid
);
1431 if (!opendata
->is_recover
) {
1432 ret
= nfs_may_open(state
->inode
, state
->owner
->so_cred
, open_mode
);
1438 /* Try to update the stateid using the delegation */
1439 if (update_open_stateid(state
, NULL
, &stateid
, fmode
))
1440 goto out_return_state
;
1443 return ERR_PTR(ret
);
1445 atomic_inc(&state
->count
);
1450 nfs4_opendata_check_deleg(struct nfs4_opendata
*data
, struct nfs4_state
*state
)
1452 struct nfs_client
*clp
= NFS_SERVER(state
->inode
)->nfs_client
;
1453 struct nfs_delegation
*delegation
;
1454 int delegation_flags
= 0;
1457 delegation
= rcu_dereference(NFS_I(state
->inode
)->delegation
);
1459 delegation_flags
= delegation
->flags
;
1461 switch (data
->o_arg
.claim
) {
1464 case NFS4_OPEN_CLAIM_DELEGATE_CUR
:
1465 case NFS4_OPEN_CLAIM_DELEG_CUR_FH
:
1466 pr_err_ratelimited("NFS: Broken NFSv4 server %s is "
1467 "returning a delegation for "
1468 "OPEN(CLAIM_DELEGATE_CUR)\n",
1472 if ((delegation_flags
& 1UL<<NFS_DELEGATION_NEED_RECLAIM
) == 0)
1473 nfs_inode_set_delegation(state
->inode
,
1474 data
->owner
->so_cred
,
1477 nfs_inode_reclaim_delegation(state
->inode
,
1478 data
->owner
->so_cred
,
1483 * Check the inode attributes against the CLAIM_PREVIOUS returned attributes
1484 * and update the nfs4_state.
1486 static struct nfs4_state
*
1487 _nfs4_opendata_reclaim_to_nfs4_state(struct nfs4_opendata
*data
)
1489 struct inode
*inode
= data
->state
->inode
;
1490 struct nfs4_state
*state
= data
->state
;
1493 if (!data
->rpc_done
) {
1494 if (data
->rpc_status
) {
1495 ret
= data
->rpc_status
;
1498 /* cached opens have already been processed */
1502 ret
= nfs_refresh_inode(inode
, &data
->f_attr
);
1506 if (data
->o_res
.delegation_type
!= 0)
1507 nfs4_opendata_check_deleg(data
, state
);
1509 update_open_stateid(state
, &data
->o_res
.stateid
, NULL
,
1511 atomic_inc(&state
->count
);
1515 return ERR_PTR(ret
);
1519 static struct nfs4_state
*
1520 _nfs4_opendata_to_nfs4_state(struct nfs4_opendata
*data
)
1522 struct inode
*inode
;
1523 struct nfs4_state
*state
= NULL
;
1526 if (!data
->rpc_done
) {
1527 state
= nfs4_try_open_cached(data
);
1532 if (!(data
->f_attr
.valid
& NFS_ATTR_FATTR
))
1534 inode
= nfs_fhget(data
->dir
->d_sb
, &data
->o_res
.fh
, &data
->f_attr
, data
->f_label
);
1535 ret
= PTR_ERR(inode
);
1539 state
= nfs4_get_open_state(inode
, data
->owner
);
1542 if (data
->o_res
.delegation_type
!= 0)
1543 nfs4_opendata_check_deleg(data
, state
);
1544 update_open_stateid(state
, &data
->o_res
.stateid
, NULL
,
1548 nfs_release_seqid(data
->o_arg
.seqid
);
1553 return ERR_PTR(ret
);
1556 static struct nfs4_state
*
1557 nfs4_opendata_to_nfs4_state(struct nfs4_opendata
*data
)
1559 if (data
->o_arg
.claim
== NFS4_OPEN_CLAIM_PREVIOUS
)
1560 return _nfs4_opendata_reclaim_to_nfs4_state(data
);
1561 return _nfs4_opendata_to_nfs4_state(data
);
1564 static struct nfs_open_context
*nfs4_state_find_open_context(struct nfs4_state
*state
)
1566 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
1567 struct nfs_open_context
*ctx
;
1569 spin_lock(&state
->inode
->i_lock
);
1570 list_for_each_entry(ctx
, &nfsi
->open_files
, list
) {
1571 if (ctx
->state
!= state
)
1573 get_nfs_open_context(ctx
);
1574 spin_unlock(&state
->inode
->i_lock
);
1577 spin_unlock(&state
->inode
->i_lock
);
1578 return ERR_PTR(-ENOENT
);
1581 static struct nfs4_opendata
*nfs4_open_recoverdata_alloc(struct nfs_open_context
*ctx
,
1582 struct nfs4_state
*state
, enum open_claim_type4 claim
)
1584 struct nfs4_opendata
*opendata
;
1586 opendata
= nfs4_opendata_alloc(ctx
->dentry
, state
->owner
, 0, 0,
1587 NULL
, NULL
, claim
, GFP_NOFS
);
1588 if (opendata
== NULL
)
1589 return ERR_PTR(-ENOMEM
);
1590 opendata
->state
= state
;
1591 atomic_inc(&state
->count
);
1595 static int nfs4_open_recover_helper(struct nfs4_opendata
*opendata
,
1598 struct nfs4_state
*newstate
;
1601 if (!nfs4_mode_match_open_stateid(opendata
->state
, fmode
))
1603 opendata
->o_arg
.open_flags
= 0;
1604 opendata
->o_arg
.fmode
= fmode
;
1605 opendata
->o_arg
.share_access
= nfs4_map_atomic_open_share(
1606 NFS_SB(opendata
->dentry
->d_sb
),
1608 memset(&opendata
->o_res
, 0, sizeof(opendata
->o_res
));
1609 memset(&opendata
->c_res
, 0, sizeof(opendata
->c_res
));
1610 nfs4_init_opendata_res(opendata
);
1611 ret
= _nfs4_recover_proc_open(opendata
);
1614 newstate
= nfs4_opendata_to_nfs4_state(opendata
);
1615 if (IS_ERR(newstate
))
1616 return PTR_ERR(newstate
);
1617 if (newstate
!= opendata
->state
)
1619 nfs4_close_state(newstate
, fmode
);
1623 static int nfs4_open_recover(struct nfs4_opendata
*opendata
, struct nfs4_state
*state
)
1627 /* Don't trigger recovery in nfs_test_and_clear_all_open_stateid */
1628 clear_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1629 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1630 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1631 /* memory barrier prior to reading state->n_* */
1632 clear_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1633 clear_bit(NFS_OPEN_STATE
, &state
->flags
);
1635 ret
= nfs4_open_recover_helper(opendata
, FMODE_READ
|FMODE_WRITE
);
1638 ret
= nfs4_open_recover_helper(opendata
, FMODE_WRITE
);
1641 ret
= nfs4_open_recover_helper(opendata
, FMODE_READ
);
1645 * We may have performed cached opens for all three recoveries.
1646 * Check if we need to update the current stateid.
1648 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0 &&
1649 !nfs4_stateid_match(&state
->stateid
, &state
->open_stateid
)) {
1650 write_seqlock(&state
->seqlock
);
1651 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0)
1652 nfs4_stateid_copy(&state
->stateid
, &state
->open_stateid
);
1653 write_sequnlock(&state
->seqlock
);
1660 * reclaim state on the server after a reboot.
1662 static int _nfs4_do_open_reclaim(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1664 struct nfs_delegation
*delegation
;
1665 struct nfs4_opendata
*opendata
;
1666 fmode_t delegation_type
= 0;
1669 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
,
1670 NFS4_OPEN_CLAIM_PREVIOUS
);
1671 if (IS_ERR(opendata
))
1672 return PTR_ERR(opendata
);
1674 delegation
= rcu_dereference(NFS_I(state
->inode
)->delegation
);
1675 if (delegation
!= NULL
&& test_bit(NFS_DELEGATION_NEED_RECLAIM
, &delegation
->flags
) != 0)
1676 delegation_type
= delegation
->type
;
1678 opendata
->o_arg
.u
.delegation_type
= delegation_type
;
1679 status
= nfs4_open_recover(opendata
, state
);
1680 nfs4_opendata_put(opendata
);
1684 static int nfs4_do_open_reclaim(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1686 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1687 struct nfs4_exception exception
= { };
1690 err
= _nfs4_do_open_reclaim(ctx
, state
);
1691 trace_nfs4_open_reclaim(ctx
, 0, err
);
1692 if (nfs4_clear_cap_atomic_open_v1(server
, err
, &exception
))
1694 if (err
!= -NFS4ERR_DELAY
)
1696 nfs4_handle_exception(server
, err
, &exception
);
1697 } while (exception
.retry
);
1701 static int nfs4_open_reclaim(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
1703 struct nfs_open_context
*ctx
;
1706 ctx
= nfs4_state_find_open_context(state
);
1709 ret
= nfs4_do_open_reclaim(ctx
, state
);
1710 put_nfs_open_context(ctx
);
1714 static int nfs4_handle_delegation_recall_error(struct nfs_server
*server
, struct nfs4_state
*state
, const nfs4_stateid
*stateid
, int err
)
1718 printk(KERN_ERR
"NFS: %s: unhandled error "
1719 "%d.\n", __func__
, err
);
1725 case -NFS4ERR_BADSESSION
:
1726 case -NFS4ERR_BADSLOT
:
1727 case -NFS4ERR_BAD_HIGH_SLOT
:
1728 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
1729 case -NFS4ERR_DEADSESSION
:
1730 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1731 nfs4_schedule_session_recovery(server
->nfs_client
->cl_session
, err
);
1733 case -NFS4ERR_STALE_CLIENTID
:
1734 case -NFS4ERR_STALE_STATEID
:
1735 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1736 case -NFS4ERR_EXPIRED
:
1737 /* Don't recall a delegation if it was lost */
1738 nfs4_schedule_lease_recovery(server
->nfs_client
);
1740 case -NFS4ERR_MOVED
:
1741 nfs4_schedule_migration_recovery(server
);
1743 case -NFS4ERR_LEASE_MOVED
:
1744 nfs4_schedule_lease_moved_recovery(server
->nfs_client
);
1746 case -NFS4ERR_DELEG_REVOKED
:
1747 case -NFS4ERR_ADMIN_REVOKED
:
1748 case -NFS4ERR_BAD_STATEID
:
1749 case -NFS4ERR_OPENMODE
:
1750 nfs_inode_find_state_and_recover(state
->inode
,
1752 nfs4_schedule_stateid_recovery(server
, state
);
1754 case -NFS4ERR_DELAY
:
1755 case -NFS4ERR_GRACE
:
1756 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1760 case -NFS4ERR_DENIED
:
1761 /* kill_proc(fl->fl_pid, SIGLOST, 1); */
1767 int nfs4_open_delegation_recall(struct nfs_open_context
*ctx
,
1768 struct nfs4_state
*state
, const nfs4_stateid
*stateid
,
1771 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1772 struct nfs4_opendata
*opendata
;
1775 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
,
1776 NFS4_OPEN_CLAIM_DELEG_CUR_FH
);
1777 if (IS_ERR(opendata
))
1778 return PTR_ERR(opendata
);
1779 nfs4_stateid_copy(&opendata
->o_arg
.u
.delegation
, stateid
);
1780 write_seqlock(&state
->seqlock
);
1781 nfs4_stateid_copy(&state
->stateid
, &state
->open_stateid
);
1782 write_sequnlock(&state
->seqlock
);
1783 clear_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1784 switch (type
& (FMODE_READ
|FMODE_WRITE
)) {
1785 case FMODE_READ
|FMODE_WRITE
:
1787 err
= nfs4_open_recover_helper(opendata
, FMODE_READ
|FMODE_WRITE
);
1790 err
= nfs4_open_recover_helper(opendata
, FMODE_WRITE
);
1794 err
= nfs4_open_recover_helper(opendata
, FMODE_READ
);
1796 nfs4_opendata_put(opendata
);
1797 return nfs4_handle_delegation_recall_error(server
, state
, stateid
, err
);
1800 static void nfs4_open_confirm_prepare(struct rpc_task
*task
, void *calldata
)
1802 struct nfs4_opendata
*data
= calldata
;
1804 nfs40_setup_sequence(data
->o_arg
.server
->nfs_client
->cl_slot_tbl
,
1805 &data
->c_arg
.seq_args
, &data
->c_res
.seq_res
, task
);
1808 static void nfs4_open_confirm_done(struct rpc_task
*task
, void *calldata
)
1810 struct nfs4_opendata
*data
= calldata
;
1812 nfs40_sequence_done(task
, &data
->c_res
.seq_res
);
1814 data
->rpc_status
= task
->tk_status
;
1815 if (data
->rpc_status
== 0) {
1816 nfs4_stateid_copy(&data
->o_res
.stateid
, &data
->c_res
.stateid
);
1817 nfs_confirm_seqid(&data
->owner
->so_seqid
, 0);
1818 renew_lease(data
->o_res
.server
, data
->timestamp
);
1823 static void nfs4_open_confirm_release(void *calldata
)
1825 struct nfs4_opendata
*data
= calldata
;
1826 struct nfs4_state
*state
= NULL
;
1828 /* If this request hasn't been cancelled, do nothing */
1829 if (data
->cancelled
== 0)
1831 /* In case of error, no cleanup! */
1832 if (!data
->rpc_done
)
1834 state
= nfs4_opendata_to_nfs4_state(data
);
1836 nfs4_close_state(state
, data
->o_arg
.fmode
);
1838 nfs4_opendata_put(data
);
1841 static const struct rpc_call_ops nfs4_open_confirm_ops
= {
1842 .rpc_call_prepare
= nfs4_open_confirm_prepare
,
1843 .rpc_call_done
= nfs4_open_confirm_done
,
1844 .rpc_release
= nfs4_open_confirm_release
,
1848 * Note: On error, nfs4_proc_open_confirm will free the struct nfs4_opendata
1850 static int _nfs4_proc_open_confirm(struct nfs4_opendata
*data
)
1852 struct nfs_server
*server
= NFS_SERVER(d_inode(data
->dir
));
1853 struct rpc_task
*task
;
1854 struct rpc_message msg
= {
1855 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_CONFIRM
],
1856 .rpc_argp
= &data
->c_arg
,
1857 .rpc_resp
= &data
->c_res
,
1858 .rpc_cred
= data
->owner
->so_cred
,
1860 struct rpc_task_setup task_setup_data
= {
1861 .rpc_client
= server
->client
,
1862 .rpc_message
= &msg
,
1863 .callback_ops
= &nfs4_open_confirm_ops
,
1864 .callback_data
= data
,
1865 .workqueue
= nfsiod_workqueue
,
1866 .flags
= RPC_TASK_ASYNC
,
1870 nfs4_init_sequence(&data
->c_arg
.seq_args
, &data
->c_res
.seq_res
, 1);
1871 kref_get(&data
->kref
);
1873 data
->rpc_status
= 0;
1874 data
->timestamp
= jiffies
;
1875 if (data
->is_recover
)
1876 nfs4_set_sequence_privileged(&data
->c_arg
.seq_args
);
1877 task
= rpc_run_task(&task_setup_data
);
1879 return PTR_ERR(task
);
1880 status
= nfs4_wait_for_completion_rpc_task(task
);
1882 data
->cancelled
= 1;
1885 status
= data
->rpc_status
;
1890 static void nfs4_open_prepare(struct rpc_task
*task
, void *calldata
)
1892 struct nfs4_opendata
*data
= calldata
;
1893 struct nfs4_state_owner
*sp
= data
->owner
;
1894 struct nfs_client
*clp
= sp
->so_server
->nfs_client
;
1895 enum open_claim_type4 claim
= data
->o_arg
.claim
;
1897 if (nfs_wait_on_sequence(data
->o_arg
.seqid
, task
) != 0)
1900 * Check if we still need to send an OPEN call, or if we can use
1901 * a delegation instead.
1903 if (data
->state
!= NULL
) {
1904 struct nfs_delegation
*delegation
;
1906 if (can_open_cached(data
->state
, data
->o_arg
.fmode
, data
->o_arg
.open_flags
))
1909 delegation
= rcu_dereference(NFS_I(data
->state
->inode
)->delegation
);
1910 if (can_open_delegated(delegation
, data
->o_arg
.fmode
, claim
))
1911 goto unlock_no_action
;
1914 /* Update client id. */
1915 data
->o_arg
.clientid
= clp
->cl_clientid
;
1919 case NFS4_OPEN_CLAIM_PREVIOUS
:
1920 case NFS4_OPEN_CLAIM_DELEG_CUR_FH
:
1921 case NFS4_OPEN_CLAIM_DELEG_PREV_FH
:
1922 data
->o_arg
.open_bitmap
= &nfs4_open_noattr_bitmap
[0];
1923 case NFS4_OPEN_CLAIM_FH
:
1924 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_NOATTR
];
1925 nfs_copy_fh(&data
->o_res
.fh
, data
->o_arg
.fh
);
1927 data
->timestamp
= jiffies
;
1928 if (nfs4_setup_sequence(data
->o_arg
.server
,
1929 &data
->o_arg
.seq_args
,
1930 &data
->o_res
.seq_res
,
1932 nfs_release_seqid(data
->o_arg
.seqid
);
1934 /* Set the create mode (note dependency on the session type) */
1935 data
->o_arg
.createmode
= NFS4_CREATE_UNCHECKED
;
1936 if (data
->o_arg
.open_flags
& O_EXCL
) {
1937 data
->o_arg
.createmode
= NFS4_CREATE_EXCLUSIVE
;
1938 if (nfs4_has_persistent_session(clp
))
1939 data
->o_arg
.createmode
= NFS4_CREATE_GUARDED
;
1940 else if (clp
->cl_mvops
->minor_version
> 0)
1941 data
->o_arg
.createmode
= NFS4_CREATE_EXCLUSIVE4_1
;
1947 task
->tk_action
= NULL
;
1949 nfs4_sequence_done(task
, &data
->o_res
.seq_res
);
1952 static void nfs4_open_done(struct rpc_task
*task
, void *calldata
)
1954 struct nfs4_opendata
*data
= calldata
;
1956 data
->rpc_status
= task
->tk_status
;
1958 if (!nfs4_sequence_done(task
, &data
->o_res
.seq_res
))
1961 if (task
->tk_status
== 0) {
1962 if (data
->o_res
.f_attr
->valid
& NFS_ATTR_FATTR_TYPE
) {
1963 switch (data
->o_res
.f_attr
->mode
& S_IFMT
) {
1967 data
->rpc_status
= -ELOOP
;
1970 data
->rpc_status
= -EISDIR
;
1973 data
->rpc_status
= -ENOTDIR
;
1976 renew_lease(data
->o_res
.server
, data
->timestamp
);
1977 if (!(data
->o_res
.rflags
& NFS4_OPEN_RESULT_CONFIRM
))
1978 nfs_confirm_seqid(&data
->owner
->so_seqid
, 0);
1983 static void nfs4_open_release(void *calldata
)
1985 struct nfs4_opendata
*data
= calldata
;
1986 struct nfs4_state
*state
= NULL
;
1988 /* If this request hasn't been cancelled, do nothing */
1989 if (data
->cancelled
== 0)
1991 /* In case of error, no cleanup! */
1992 if (data
->rpc_status
!= 0 || !data
->rpc_done
)
1994 /* In case we need an open_confirm, no cleanup! */
1995 if (data
->o_res
.rflags
& NFS4_OPEN_RESULT_CONFIRM
)
1997 state
= nfs4_opendata_to_nfs4_state(data
);
1999 nfs4_close_state(state
, data
->o_arg
.fmode
);
2001 nfs4_opendata_put(data
);
2004 static const struct rpc_call_ops nfs4_open_ops
= {
2005 .rpc_call_prepare
= nfs4_open_prepare
,
2006 .rpc_call_done
= nfs4_open_done
,
2007 .rpc_release
= nfs4_open_release
,
2010 static int nfs4_run_open_task(struct nfs4_opendata
*data
, int isrecover
)
2012 struct inode
*dir
= d_inode(data
->dir
);
2013 struct nfs_server
*server
= NFS_SERVER(dir
);
2014 struct nfs_openargs
*o_arg
= &data
->o_arg
;
2015 struct nfs_openres
*o_res
= &data
->o_res
;
2016 struct rpc_task
*task
;
2017 struct rpc_message msg
= {
2018 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN
],
2021 .rpc_cred
= data
->owner
->so_cred
,
2023 struct rpc_task_setup task_setup_data
= {
2024 .rpc_client
= server
->client
,
2025 .rpc_message
= &msg
,
2026 .callback_ops
= &nfs4_open_ops
,
2027 .callback_data
= data
,
2028 .workqueue
= nfsiod_workqueue
,
2029 .flags
= RPC_TASK_ASYNC
,
2033 nfs4_init_sequence(&o_arg
->seq_args
, &o_res
->seq_res
, 1);
2034 kref_get(&data
->kref
);
2036 data
->rpc_status
= 0;
2037 data
->cancelled
= 0;
2038 data
->is_recover
= 0;
2040 nfs4_set_sequence_privileged(&o_arg
->seq_args
);
2041 data
->is_recover
= 1;
2043 task
= rpc_run_task(&task_setup_data
);
2045 return PTR_ERR(task
);
2046 status
= nfs4_wait_for_completion_rpc_task(task
);
2048 data
->cancelled
= 1;
2051 status
= data
->rpc_status
;
2057 static int _nfs4_recover_proc_open(struct nfs4_opendata
*data
)
2059 struct inode
*dir
= d_inode(data
->dir
);
2060 struct nfs_openres
*o_res
= &data
->o_res
;
2063 status
= nfs4_run_open_task(data
, 1);
2064 if (status
!= 0 || !data
->rpc_done
)
2067 nfs_fattr_map_and_free_names(NFS_SERVER(dir
), &data
->f_attr
);
2069 if (o_res
->rflags
& NFS4_OPEN_RESULT_CONFIRM
) {
2070 status
= _nfs4_proc_open_confirm(data
);
2079 * Additional permission checks in order to distinguish between an
2080 * open for read, and an open for execute. This works around the
2081 * fact that NFSv4 OPEN treats read and execute permissions as being
2083 * Note that in the non-execute case, we want to turn off permission
2084 * checking if we just created a new file (POSIX open() semantics).
2086 static int nfs4_opendata_access(struct rpc_cred
*cred
,
2087 struct nfs4_opendata
*opendata
,
2088 struct nfs4_state
*state
, fmode_t fmode
,
2091 struct nfs_access_entry cache
;
2094 /* access call failed or for some reason the server doesn't
2095 * support any access modes -- defer access call until later */
2096 if (opendata
->o_res
.access_supported
== 0)
2101 * Use openflags to check for exec, because fmode won't
2102 * always have FMODE_EXEC set when file open for exec.
2104 if (openflags
& __FMODE_EXEC
) {
2105 /* ONLY check for exec rights */
2107 } else if ((fmode
& FMODE_READ
) && !opendata
->file_created
)
2111 cache
.jiffies
= jiffies
;
2112 nfs_access_set_mask(&cache
, opendata
->o_res
.access_result
);
2113 nfs_access_add_cache(state
->inode
, &cache
);
2115 if ((mask
& ~cache
.mask
& (MAY_READ
| MAY_EXEC
)) == 0)
2118 /* even though OPEN succeeded, access is denied. Close the file */
2119 nfs4_close_state(state
, fmode
);
2124 * Note: On error, nfs4_proc_open will free the struct nfs4_opendata
2126 static int _nfs4_proc_open(struct nfs4_opendata
*data
)
2128 struct inode
*dir
= d_inode(data
->dir
);
2129 struct nfs_server
*server
= NFS_SERVER(dir
);
2130 struct nfs_openargs
*o_arg
= &data
->o_arg
;
2131 struct nfs_openres
*o_res
= &data
->o_res
;
2134 status
= nfs4_run_open_task(data
, 0);
2135 if (!data
->rpc_done
)
2138 if (status
== -NFS4ERR_BADNAME
&&
2139 !(o_arg
->open_flags
& O_CREAT
))
2144 nfs_fattr_map_and_free_names(server
, &data
->f_attr
);
2146 if (o_arg
->open_flags
& O_CREAT
) {
2147 update_changeattr(dir
, &o_res
->cinfo
);
2148 if (o_arg
->open_flags
& O_EXCL
)
2149 data
->file_created
= 1;
2150 else if (o_res
->cinfo
.before
!= o_res
->cinfo
.after
)
2151 data
->file_created
= 1;
2153 if ((o_res
->rflags
& NFS4_OPEN_RESULT_LOCKTYPE_POSIX
) == 0)
2154 server
->caps
&= ~NFS_CAP_POSIX_LOCK
;
2155 if(o_res
->rflags
& NFS4_OPEN_RESULT_CONFIRM
) {
2156 status
= _nfs4_proc_open_confirm(data
);
2160 if (!(o_res
->f_attr
->valid
& NFS_ATTR_FATTR
))
2161 nfs4_proc_getattr(server
, &o_res
->fh
, o_res
->f_attr
, o_res
->f_label
);
2165 static int nfs4_recover_expired_lease(struct nfs_server
*server
)
2167 return nfs4_client_recover_expired_lease(server
->nfs_client
);
2172 * reclaim state on the server after a network partition.
2173 * Assumes caller holds the appropriate lock
2175 static int _nfs4_open_expired(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
2177 struct nfs4_opendata
*opendata
;
2180 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
,
2181 NFS4_OPEN_CLAIM_FH
);
2182 if (IS_ERR(opendata
))
2183 return PTR_ERR(opendata
);
2184 ret
= nfs4_open_recover(opendata
, state
);
2186 d_drop(ctx
->dentry
);
2187 nfs4_opendata_put(opendata
);
2191 static int nfs4_do_open_expired(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
2193 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
2194 struct nfs4_exception exception
= { };
2198 err
= _nfs4_open_expired(ctx
, state
);
2199 trace_nfs4_open_expired(ctx
, 0, err
);
2200 if (nfs4_clear_cap_atomic_open_v1(server
, err
, &exception
))
2205 case -NFS4ERR_GRACE
:
2206 case -NFS4ERR_DELAY
:
2207 nfs4_handle_exception(server
, err
, &exception
);
2210 } while (exception
.retry
);
2215 static int nfs4_open_expired(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
2217 struct nfs_open_context
*ctx
;
2220 ctx
= nfs4_state_find_open_context(state
);
2223 ret
= nfs4_do_open_expired(ctx
, state
);
2224 put_nfs_open_context(ctx
);
2228 static void nfs_finish_clear_delegation_stateid(struct nfs4_state
*state
)
2230 nfs_remove_bad_delegation(state
->inode
);
2231 write_seqlock(&state
->seqlock
);
2232 nfs4_stateid_copy(&state
->stateid
, &state
->open_stateid
);
2233 write_sequnlock(&state
->seqlock
);
2234 clear_bit(NFS_DELEGATED_STATE
, &state
->flags
);
2237 static void nfs40_clear_delegation_stateid(struct nfs4_state
*state
)
2239 if (rcu_access_pointer(NFS_I(state
->inode
)->delegation
) != NULL
)
2240 nfs_finish_clear_delegation_stateid(state
);
2243 static int nfs40_open_expired(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
2245 /* NFSv4.0 doesn't allow for delegation recovery on open expire */
2246 nfs40_clear_delegation_stateid(state
);
2247 return nfs4_open_expired(sp
, state
);
2250 #if defined(CONFIG_NFS_V4_1)
2251 static void nfs41_check_delegation_stateid(struct nfs4_state
*state
)
2253 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
2254 nfs4_stateid stateid
;
2255 struct nfs_delegation
*delegation
;
2256 struct rpc_cred
*cred
;
2259 /* Get the delegation credential for use by test/free_stateid */
2261 delegation
= rcu_dereference(NFS_I(state
->inode
)->delegation
);
2262 if (delegation
== NULL
) {
2267 nfs4_stateid_copy(&stateid
, &delegation
->stateid
);
2268 cred
= get_rpccred(delegation
->cred
);
2270 status
= nfs41_test_stateid(server
, &stateid
, cred
);
2271 trace_nfs4_test_delegation_stateid(state
, NULL
, status
);
2273 if (status
!= NFS_OK
) {
2274 /* Free the stateid unless the server explicitly
2275 * informs us the stateid is unrecognized. */
2276 if (status
!= -NFS4ERR_BAD_STATEID
)
2277 nfs41_free_stateid(server
, &stateid
, cred
);
2278 nfs_finish_clear_delegation_stateid(state
);
2285 * nfs41_check_open_stateid - possibly free an open stateid
2287 * @state: NFSv4 state for an inode
2289 * Returns NFS_OK if recovery for this stateid is now finished.
2290 * Otherwise a negative NFS4ERR value is returned.
2292 static int nfs41_check_open_stateid(struct nfs4_state
*state
)
2294 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
2295 nfs4_stateid
*stateid
= &state
->open_stateid
;
2296 struct rpc_cred
*cred
= state
->owner
->so_cred
;
2299 /* If a state reset has been done, test_stateid is unneeded */
2300 if ((test_bit(NFS_O_RDONLY_STATE
, &state
->flags
) == 0) &&
2301 (test_bit(NFS_O_WRONLY_STATE
, &state
->flags
) == 0) &&
2302 (test_bit(NFS_O_RDWR_STATE
, &state
->flags
) == 0))
2303 return -NFS4ERR_BAD_STATEID
;
2305 status
= nfs41_test_stateid(server
, stateid
, cred
);
2306 trace_nfs4_test_open_stateid(state
, NULL
, status
);
2307 if (status
!= NFS_OK
) {
2308 /* Free the stateid unless the server explicitly
2309 * informs us the stateid is unrecognized. */
2310 if (status
!= -NFS4ERR_BAD_STATEID
)
2311 nfs41_free_stateid(server
, stateid
, cred
);
2313 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
2314 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
2315 clear_bit(NFS_O_RDWR_STATE
, &state
->flags
);
2316 clear_bit(NFS_OPEN_STATE
, &state
->flags
);
2321 static int nfs41_open_expired(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
2325 nfs41_check_delegation_stateid(state
);
2326 status
= nfs41_check_open_stateid(state
);
2327 if (status
!= NFS_OK
)
2328 status
= nfs4_open_expired(sp
, state
);
2334 * on an EXCLUSIVE create, the server should send back a bitmask with FATTR4-*
2335 * fields corresponding to attributes that were used to store the verifier.
2336 * Make sure we clobber those fields in the later setattr call
2338 static inline void nfs4_exclusive_attrset(struct nfs4_opendata
*opendata
,
2339 struct iattr
*sattr
, struct nfs4_label
**label
)
2341 const u32
*attrset
= opendata
->o_res
.attrset
;
2343 if ((attrset
[1] & FATTR4_WORD1_TIME_ACCESS
) &&
2344 !(sattr
->ia_valid
& ATTR_ATIME_SET
))
2345 sattr
->ia_valid
|= ATTR_ATIME
;
2347 if ((attrset
[1] & FATTR4_WORD1_TIME_MODIFY
) &&
2348 !(sattr
->ia_valid
& ATTR_MTIME_SET
))
2349 sattr
->ia_valid
|= ATTR_MTIME
;
2351 /* Except MODE, it seems harmless of setting twice. */
2352 if ((attrset
[1] & FATTR4_WORD1_MODE
))
2353 sattr
->ia_valid
&= ~ATTR_MODE
;
2355 if (attrset
[2] & FATTR4_WORD2_SECURITY_LABEL
)
2359 static int _nfs4_open_and_get_state(struct nfs4_opendata
*opendata
,
2362 struct nfs_open_context
*ctx
)
2364 struct nfs4_state_owner
*sp
= opendata
->owner
;
2365 struct nfs_server
*server
= sp
->so_server
;
2366 struct dentry
*dentry
;
2367 struct nfs4_state
*state
;
2371 seq
= raw_seqcount_begin(&sp
->so_reclaim_seqcount
);
2373 ret
= _nfs4_proc_open(opendata
);
2377 state
= nfs4_opendata_to_nfs4_state(opendata
);
2378 ret
= PTR_ERR(state
);
2381 if (server
->caps
& NFS_CAP_POSIX_LOCK
)
2382 set_bit(NFS_STATE_POSIX_LOCKS
, &state
->flags
);
2384 dentry
= opendata
->dentry
;
2385 if (d_really_is_negative(dentry
)) {
2386 /* FIXME: Is this d_drop() ever needed? */
2388 dentry
= d_add_unique(dentry
, igrab(state
->inode
));
2389 if (dentry
== NULL
) {
2390 dentry
= opendata
->dentry
;
2391 } else if (dentry
!= ctx
->dentry
) {
2393 ctx
->dentry
= dget(dentry
);
2395 nfs_set_verifier(dentry
,
2396 nfs_save_change_attribute(d_inode(opendata
->dir
)));
2399 ret
= nfs4_opendata_access(sp
->so_cred
, opendata
, state
, fmode
, flags
);
2404 if (d_inode(dentry
) == state
->inode
) {
2405 nfs_inode_attach_open_context(ctx
);
2406 if (read_seqcount_retry(&sp
->so_reclaim_seqcount
, seq
))
2407 nfs4_schedule_stateid_recovery(server
, state
);
2414 * Returns a referenced nfs4_state
2416 static int _nfs4_do_open(struct inode
*dir
,
2417 struct nfs_open_context
*ctx
,
2419 struct iattr
*sattr
,
2420 struct nfs4_label
*label
,
2423 struct nfs4_state_owner
*sp
;
2424 struct nfs4_state
*state
= NULL
;
2425 struct nfs_server
*server
= NFS_SERVER(dir
);
2426 struct nfs4_opendata
*opendata
;
2427 struct dentry
*dentry
= ctx
->dentry
;
2428 struct rpc_cred
*cred
= ctx
->cred
;
2429 struct nfs4_threshold
**ctx_th
= &ctx
->mdsthreshold
;
2430 fmode_t fmode
= ctx
->mode
& (FMODE_READ
|FMODE_WRITE
|FMODE_EXEC
);
2431 enum open_claim_type4 claim
= NFS4_OPEN_CLAIM_NULL
;
2432 struct nfs4_label
*olabel
= NULL
;
2435 /* Protect against reboot recovery conflicts */
2437 sp
= nfs4_get_state_owner(server
, cred
, GFP_KERNEL
);
2439 dprintk("nfs4_do_open: nfs4_get_state_owner failed!\n");
2442 status
= nfs4_recover_expired_lease(server
);
2444 goto err_put_state_owner
;
2445 if (d_really_is_positive(dentry
))
2446 nfs4_return_incompatible_delegation(d_inode(dentry
), fmode
);
2448 if (d_really_is_positive(dentry
))
2449 claim
= NFS4_OPEN_CLAIM_FH
;
2450 opendata
= nfs4_opendata_alloc(dentry
, sp
, fmode
, flags
, sattr
,
2451 label
, claim
, GFP_KERNEL
);
2452 if (opendata
== NULL
)
2453 goto err_put_state_owner
;
2456 olabel
= nfs4_label_alloc(server
, GFP_KERNEL
);
2457 if (IS_ERR(olabel
)) {
2458 status
= PTR_ERR(olabel
);
2459 goto err_opendata_put
;
2463 if (server
->attr_bitmask
[2] & FATTR4_WORD2_MDSTHRESHOLD
) {
2464 if (!opendata
->f_attr
.mdsthreshold
) {
2465 opendata
->f_attr
.mdsthreshold
= pnfs_mdsthreshold_alloc();
2466 if (!opendata
->f_attr
.mdsthreshold
)
2467 goto err_free_label
;
2469 opendata
->o_arg
.open_bitmap
= &nfs4_pnfs_open_bitmap
[0];
2471 if (d_really_is_positive(dentry
))
2472 opendata
->state
= nfs4_get_open_state(d_inode(dentry
), sp
);
2474 status
= _nfs4_open_and_get_state(opendata
, fmode
, flags
, ctx
);
2476 goto err_free_label
;
2479 if ((opendata
->o_arg
.open_flags
& (O_CREAT
|O_EXCL
)) == (O_CREAT
|O_EXCL
) &&
2480 (opendata
->o_arg
.createmode
!= NFS4_CREATE_GUARDED
)) {
2481 nfs4_exclusive_attrset(opendata
, sattr
, &label
);
2483 nfs_fattr_init(opendata
->o_res
.f_attr
);
2484 status
= nfs4_do_setattr(state
->inode
, cred
,
2485 opendata
->o_res
.f_attr
, sattr
,
2486 state
, label
, olabel
);
2488 nfs_setattr_update_inode(state
->inode
, sattr
,
2489 opendata
->o_res
.f_attr
);
2490 nfs_setsecurity(state
->inode
, opendata
->o_res
.f_attr
, olabel
);
2493 if (opened
&& opendata
->file_created
)
2494 *opened
|= FILE_CREATED
;
2496 if (pnfs_use_threshold(ctx_th
, opendata
->f_attr
.mdsthreshold
, server
)) {
2497 *ctx_th
= opendata
->f_attr
.mdsthreshold
;
2498 opendata
->f_attr
.mdsthreshold
= NULL
;
2501 nfs4_label_free(olabel
);
2503 nfs4_opendata_put(opendata
);
2504 nfs4_put_state_owner(sp
);
2507 nfs4_label_free(olabel
);
2509 nfs4_opendata_put(opendata
);
2510 err_put_state_owner
:
2511 nfs4_put_state_owner(sp
);
2517 static struct nfs4_state
*nfs4_do_open(struct inode
*dir
,
2518 struct nfs_open_context
*ctx
,
2520 struct iattr
*sattr
,
2521 struct nfs4_label
*label
,
2524 struct nfs_server
*server
= NFS_SERVER(dir
);
2525 struct nfs4_exception exception
= { };
2526 struct nfs4_state
*res
;
2530 status
= _nfs4_do_open(dir
, ctx
, flags
, sattr
, label
, opened
);
2532 trace_nfs4_open_file(ctx
, flags
, status
);
2535 /* NOTE: BAD_SEQID means the server and client disagree about the
2536 * book-keeping w.r.t. state-changing operations
2537 * (OPEN/CLOSE/LOCK/LOCKU...)
2538 * It is actually a sign of a bug on the client or on the server.
2540 * If we receive a BAD_SEQID error in the particular case of
2541 * doing an OPEN, we assume that nfs_increment_open_seqid() will
2542 * have unhashed the old state_owner for us, and that we can
2543 * therefore safely retry using a new one. We should still warn
2544 * the user though...
2546 if (status
== -NFS4ERR_BAD_SEQID
) {
2547 pr_warn_ratelimited("NFS: v4 server %s "
2548 " returned a bad sequence-id error!\n",
2549 NFS_SERVER(dir
)->nfs_client
->cl_hostname
);
2550 exception
.retry
= 1;
2554 * BAD_STATEID on OPEN means that the server cancelled our
2555 * state before it received the OPEN_CONFIRM.
2556 * Recover by retrying the request as per the discussion
2557 * on Page 181 of RFC3530.
2559 if (status
== -NFS4ERR_BAD_STATEID
) {
2560 exception
.retry
= 1;
2563 if (status
== -EAGAIN
) {
2564 /* We must have found a delegation */
2565 exception
.retry
= 1;
2568 if (nfs4_clear_cap_atomic_open_v1(server
, status
, &exception
))
2570 res
= ERR_PTR(nfs4_handle_exception(server
,
2571 status
, &exception
));
2572 } while (exception
.retry
);
2576 static int _nfs4_do_setattr(struct inode
*inode
, struct rpc_cred
*cred
,
2577 struct nfs_fattr
*fattr
, struct iattr
*sattr
,
2578 struct nfs4_state
*state
, struct nfs4_label
*ilabel
,
2579 struct nfs4_label
*olabel
)
2581 struct nfs_server
*server
= NFS_SERVER(inode
);
2582 struct nfs_setattrargs arg
= {
2583 .fh
= NFS_FH(inode
),
2586 .bitmask
= server
->attr_bitmask
,
2589 struct nfs_setattrres res
= {
2594 struct rpc_message msg
= {
2595 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETATTR
],
2600 unsigned long timestamp
= jiffies
;
2605 arg
.bitmask
= nfs4_bitmask(server
, ilabel
);
2607 arg
.bitmask
= nfs4_bitmask(server
, olabel
);
2609 nfs_fattr_init(fattr
);
2611 /* Servers should only apply open mode checks for file size changes */
2612 truncate
= (sattr
->ia_valid
& ATTR_SIZE
) ? true : false;
2613 fmode
= truncate
? FMODE_WRITE
: FMODE_READ
;
2615 if (nfs4_copy_delegation_stateid(&arg
.stateid
, inode
, fmode
)) {
2616 /* Use that stateid */
2617 } else if (truncate
&& state
!= NULL
) {
2618 struct nfs_lockowner lockowner
= {
2619 .l_owner
= current
->files
,
2620 .l_pid
= current
->tgid
,
2622 if (!nfs4_valid_open_stateid(state
))
2624 if (nfs4_select_rw_stateid(&arg
.stateid
, state
, FMODE_WRITE
,
2625 &lockowner
) == -EIO
)
2628 nfs4_stateid_copy(&arg
.stateid
, &zero_stateid
);
2630 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
2631 if (status
== 0 && state
!= NULL
)
2632 renew_lease(server
, timestamp
);
2636 static int nfs4_do_setattr(struct inode
*inode
, struct rpc_cred
*cred
,
2637 struct nfs_fattr
*fattr
, struct iattr
*sattr
,
2638 struct nfs4_state
*state
, struct nfs4_label
*ilabel
,
2639 struct nfs4_label
*olabel
)
2641 struct nfs_server
*server
= NFS_SERVER(inode
);
2642 struct nfs4_exception exception
= {
2648 err
= _nfs4_do_setattr(inode
, cred
, fattr
, sattr
, state
, ilabel
, olabel
);
2649 trace_nfs4_setattr(inode
, err
);
2651 case -NFS4ERR_OPENMODE
:
2652 if (!(sattr
->ia_valid
& ATTR_SIZE
)) {
2653 pr_warn_once("NFSv4: server %s is incorrectly "
2654 "applying open mode checks to "
2655 "a SETATTR that is not "
2656 "changing file size.\n",
2657 server
->nfs_client
->cl_hostname
);
2659 if (state
&& !(state
->state
& FMODE_WRITE
)) {
2661 if (sattr
->ia_valid
& ATTR_OPEN
)
2666 err
= nfs4_handle_exception(server
, err
, &exception
);
2667 } while (exception
.retry
);
2673 nfs4_wait_on_layoutreturn(struct inode
*inode
, struct rpc_task
*task
)
2675 if (inode
== NULL
|| !nfs_have_layout(inode
))
2678 return pnfs_wait_on_layoutreturn(inode
, task
);
2681 struct nfs4_closedata
{
2682 struct inode
*inode
;
2683 struct nfs4_state
*state
;
2684 struct nfs_closeargs arg
;
2685 struct nfs_closeres res
;
2686 struct nfs_fattr fattr
;
2687 unsigned long timestamp
;
2692 static void nfs4_free_closedata(void *data
)
2694 struct nfs4_closedata
*calldata
= data
;
2695 struct nfs4_state_owner
*sp
= calldata
->state
->owner
;
2696 struct super_block
*sb
= calldata
->state
->inode
->i_sb
;
2699 pnfs_roc_release(calldata
->state
->inode
);
2700 nfs4_put_open_state(calldata
->state
);
2701 nfs_free_seqid(calldata
->arg
.seqid
);
2702 nfs4_put_state_owner(sp
);
2703 nfs_sb_deactive(sb
);
2707 static void nfs4_close_done(struct rpc_task
*task
, void *data
)
2709 struct nfs4_closedata
*calldata
= data
;
2710 struct nfs4_state
*state
= calldata
->state
;
2711 struct nfs_server
*server
= NFS_SERVER(calldata
->inode
);
2712 nfs4_stateid
*res_stateid
= NULL
;
2714 dprintk("%s: begin!\n", __func__
);
2715 if (!nfs4_sequence_done(task
, &calldata
->res
.seq_res
))
2717 trace_nfs4_close(state
, &calldata
->arg
, &calldata
->res
, task
->tk_status
);
2718 /* hmm. we are done with the inode, and in the process of freeing
2719 * the state_owner. we keep this around to process errors
2721 switch (task
->tk_status
) {
2723 res_stateid
= &calldata
->res
.stateid
;
2725 pnfs_roc_set_barrier(state
->inode
,
2726 calldata
->roc_barrier
);
2727 renew_lease(server
, calldata
->timestamp
);
2729 case -NFS4ERR_ADMIN_REVOKED
:
2730 case -NFS4ERR_STALE_STATEID
:
2731 case -NFS4ERR_OLD_STATEID
:
2732 case -NFS4ERR_BAD_STATEID
:
2733 case -NFS4ERR_EXPIRED
:
2734 if (!nfs4_stateid_match(&calldata
->arg
.stateid
,
2735 &state
->open_stateid
)) {
2736 rpc_restart_call_prepare(task
);
2739 if (calldata
->arg
.fmode
== 0)
2742 if (nfs4_async_handle_error(task
, server
, state
, NULL
) == -EAGAIN
) {
2743 rpc_restart_call_prepare(task
);
2747 nfs_clear_open_stateid(state
, &calldata
->arg
.stateid
,
2748 res_stateid
, calldata
->arg
.fmode
);
2750 nfs_release_seqid(calldata
->arg
.seqid
);
2751 nfs_refresh_inode(calldata
->inode
, calldata
->res
.fattr
);
2752 dprintk("%s: done, ret = %d!\n", __func__
, task
->tk_status
);
2755 static void nfs4_close_prepare(struct rpc_task
*task
, void *data
)
2757 struct nfs4_closedata
*calldata
= data
;
2758 struct nfs4_state
*state
= calldata
->state
;
2759 struct inode
*inode
= calldata
->inode
;
2760 bool is_rdonly
, is_wronly
, is_rdwr
;
2763 dprintk("%s: begin!\n", __func__
);
2764 if (nfs_wait_on_sequence(calldata
->arg
.seqid
, task
) != 0)
2767 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_DOWNGRADE
];
2768 spin_lock(&state
->owner
->so_lock
);
2769 is_rdwr
= test_bit(NFS_O_RDWR_STATE
, &state
->flags
);
2770 is_rdonly
= test_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
2771 is_wronly
= test_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
2772 nfs4_stateid_copy(&calldata
->arg
.stateid
, &state
->open_stateid
);
2773 /* Calculate the change in open mode */
2774 calldata
->arg
.fmode
= 0;
2775 if (state
->n_rdwr
== 0) {
2776 if (state
->n_rdonly
== 0)
2777 call_close
|= is_rdonly
;
2779 calldata
->arg
.fmode
|= FMODE_READ
;
2780 if (state
->n_wronly
== 0)
2781 call_close
|= is_wronly
;
2783 calldata
->arg
.fmode
|= FMODE_WRITE
;
2785 calldata
->arg
.fmode
|= FMODE_READ
|FMODE_WRITE
;
2787 if (calldata
->arg
.fmode
== 0)
2788 call_close
|= is_rdwr
;
2790 if (!nfs4_valid_open_stateid(state
))
2792 spin_unlock(&state
->owner
->so_lock
);
2795 /* Note: exit _without_ calling nfs4_close_done */
2799 if (nfs4_wait_on_layoutreturn(inode
, task
)) {
2800 nfs_release_seqid(calldata
->arg
.seqid
);
2804 if (calldata
->arg
.fmode
== 0)
2805 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CLOSE
];
2807 pnfs_roc_get_barrier(inode
, &calldata
->roc_barrier
);
2809 calldata
->arg
.share_access
=
2810 nfs4_map_atomic_open_share(NFS_SERVER(inode
),
2811 calldata
->arg
.fmode
, 0);
2813 nfs_fattr_init(calldata
->res
.fattr
);
2814 calldata
->timestamp
= jiffies
;
2815 if (nfs4_setup_sequence(NFS_SERVER(inode
),
2816 &calldata
->arg
.seq_args
,
2817 &calldata
->res
.seq_res
,
2819 nfs_release_seqid(calldata
->arg
.seqid
);
2820 dprintk("%s: done!\n", __func__
);
2823 task
->tk_action
= NULL
;
2825 nfs4_sequence_done(task
, &calldata
->res
.seq_res
);
2828 static const struct rpc_call_ops nfs4_close_ops
= {
2829 .rpc_call_prepare
= nfs4_close_prepare
,
2830 .rpc_call_done
= nfs4_close_done
,
2831 .rpc_release
= nfs4_free_closedata
,
2834 static bool nfs4_roc(struct inode
*inode
)
2836 if (!nfs_have_layout(inode
))
2838 return pnfs_roc(inode
);
2842 * It is possible for data to be read/written from a mem-mapped file
2843 * after the sys_close call (which hits the vfs layer as a flush).
2844 * This means that we can't safely call nfsv4 close on a file until
2845 * the inode is cleared. This in turn means that we are not good
2846 * NFSv4 citizens - we do not indicate to the server to update the file's
2847 * share state even when we are done with one of the three share
2848 * stateid's in the inode.
2850 * NOTE: Caller must be holding the sp->so_owner semaphore!
2852 int nfs4_do_close(struct nfs4_state
*state
, gfp_t gfp_mask
, int wait
)
2854 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
2855 struct nfs_seqid
*(*alloc_seqid
)(struct nfs_seqid_counter
*, gfp_t
);
2856 struct nfs4_closedata
*calldata
;
2857 struct nfs4_state_owner
*sp
= state
->owner
;
2858 struct rpc_task
*task
;
2859 struct rpc_message msg
= {
2860 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CLOSE
],
2861 .rpc_cred
= state
->owner
->so_cred
,
2863 struct rpc_task_setup task_setup_data
= {
2864 .rpc_client
= server
->client
,
2865 .rpc_message
= &msg
,
2866 .callback_ops
= &nfs4_close_ops
,
2867 .workqueue
= nfsiod_workqueue
,
2868 .flags
= RPC_TASK_ASYNC
,
2870 int status
= -ENOMEM
;
2872 nfs4_state_protect(server
->nfs_client
, NFS_SP4_MACH_CRED_CLEANUP
,
2873 &task_setup_data
.rpc_client
, &msg
);
2875 calldata
= kzalloc(sizeof(*calldata
), gfp_mask
);
2876 if (calldata
== NULL
)
2878 nfs4_init_sequence(&calldata
->arg
.seq_args
, &calldata
->res
.seq_res
, 1);
2879 calldata
->inode
= state
->inode
;
2880 calldata
->state
= state
;
2881 calldata
->arg
.fh
= NFS_FH(state
->inode
);
2882 /* Serialization for the sequence id */
2883 alloc_seqid
= server
->nfs_client
->cl_mvops
->alloc_seqid
;
2884 calldata
->arg
.seqid
= alloc_seqid(&state
->owner
->so_seqid
, gfp_mask
);
2885 if (IS_ERR(calldata
->arg
.seqid
))
2886 goto out_free_calldata
;
2887 calldata
->arg
.fmode
= 0;
2888 calldata
->arg
.bitmask
= server
->cache_consistency_bitmask
;
2889 calldata
->res
.fattr
= &calldata
->fattr
;
2890 calldata
->res
.seqid
= calldata
->arg
.seqid
;
2891 calldata
->res
.server
= server
;
2892 calldata
->roc
= nfs4_roc(state
->inode
);
2893 nfs_sb_active(calldata
->inode
->i_sb
);
2895 msg
.rpc_argp
= &calldata
->arg
;
2896 msg
.rpc_resp
= &calldata
->res
;
2897 task_setup_data
.callback_data
= calldata
;
2898 task
= rpc_run_task(&task_setup_data
);
2900 return PTR_ERR(task
);
2903 status
= rpc_wait_for_completion_task(task
);
2909 nfs4_put_open_state(state
);
2910 nfs4_put_state_owner(sp
);
2914 static struct inode
*
2915 nfs4_atomic_open(struct inode
*dir
, struct nfs_open_context
*ctx
,
2916 int open_flags
, struct iattr
*attr
, int *opened
)
2918 struct nfs4_state
*state
;
2919 struct nfs4_label l
= {0, 0, 0, NULL
}, *label
= NULL
;
2921 label
= nfs4_label_init_security(dir
, ctx
->dentry
, attr
, &l
);
2923 /* Protect against concurrent sillydeletes */
2924 state
= nfs4_do_open(dir
, ctx
, open_flags
, attr
, label
, opened
);
2926 nfs4_label_release_security(label
);
2929 return ERR_CAST(state
);
2930 return state
->inode
;
2933 static void nfs4_close_context(struct nfs_open_context
*ctx
, int is_sync
)
2935 if (ctx
->state
== NULL
)
2938 nfs4_close_sync(ctx
->state
, ctx
->mode
);
2940 nfs4_close_state(ctx
->state
, ctx
->mode
);
2943 #define FATTR4_WORD1_NFS40_MASK (2*FATTR4_WORD1_MOUNTED_ON_FILEID - 1UL)
2944 #define FATTR4_WORD2_NFS41_MASK (2*FATTR4_WORD2_SUPPATTR_EXCLCREAT - 1UL)
2945 #define FATTR4_WORD2_NFS42_MASK (2*FATTR4_WORD2_SECURITY_LABEL - 1UL)
2947 static int _nfs4_server_capabilities(struct nfs_server
*server
, struct nfs_fh
*fhandle
)
2949 u32 bitmask
[3] = {}, minorversion
= server
->nfs_client
->cl_minorversion
;
2950 struct nfs4_server_caps_arg args
= {
2954 struct nfs4_server_caps_res res
= {};
2955 struct rpc_message msg
= {
2956 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SERVER_CAPS
],
2962 bitmask
[0] = FATTR4_WORD0_SUPPORTED_ATTRS
|
2963 FATTR4_WORD0_FH_EXPIRE_TYPE
|
2964 FATTR4_WORD0_LINK_SUPPORT
|
2965 FATTR4_WORD0_SYMLINK_SUPPORT
|
2966 FATTR4_WORD0_ACLSUPPORT
;
2968 bitmask
[2] = FATTR4_WORD2_SUPPATTR_EXCLCREAT
;
2970 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2972 /* Sanity check the server answers */
2973 switch (minorversion
) {
2975 res
.attr_bitmask
[1] &= FATTR4_WORD1_NFS40_MASK
;
2976 res
.attr_bitmask
[2] = 0;
2979 res
.attr_bitmask
[2] &= FATTR4_WORD2_NFS41_MASK
;
2982 res
.attr_bitmask
[2] &= FATTR4_WORD2_NFS42_MASK
;
2984 memcpy(server
->attr_bitmask
, res
.attr_bitmask
, sizeof(server
->attr_bitmask
));
2985 server
->caps
&= ~(NFS_CAP_ACLS
|NFS_CAP_HARDLINKS
|
2986 NFS_CAP_SYMLINKS
|NFS_CAP_FILEID
|
2987 NFS_CAP_MODE
|NFS_CAP_NLINK
|NFS_CAP_OWNER
|
2988 NFS_CAP_OWNER_GROUP
|NFS_CAP_ATIME
|
2989 NFS_CAP_CTIME
|NFS_CAP_MTIME
|
2990 NFS_CAP_SECURITY_LABEL
);
2991 if (res
.attr_bitmask
[0] & FATTR4_WORD0_ACL
&&
2992 res
.acl_bitmask
& ACL4_SUPPORT_ALLOW_ACL
)
2993 server
->caps
|= NFS_CAP_ACLS
;
2994 if (res
.has_links
!= 0)
2995 server
->caps
|= NFS_CAP_HARDLINKS
;
2996 if (res
.has_symlinks
!= 0)
2997 server
->caps
|= NFS_CAP_SYMLINKS
;
2998 if (res
.attr_bitmask
[0] & FATTR4_WORD0_FILEID
)
2999 server
->caps
|= NFS_CAP_FILEID
;
3000 if (res
.attr_bitmask
[1] & FATTR4_WORD1_MODE
)
3001 server
->caps
|= NFS_CAP_MODE
;
3002 if (res
.attr_bitmask
[1] & FATTR4_WORD1_NUMLINKS
)
3003 server
->caps
|= NFS_CAP_NLINK
;
3004 if (res
.attr_bitmask
[1] & FATTR4_WORD1_OWNER
)
3005 server
->caps
|= NFS_CAP_OWNER
;
3006 if (res
.attr_bitmask
[1] & FATTR4_WORD1_OWNER_GROUP
)
3007 server
->caps
|= NFS_CAP_OWNER_GROUP
;
3008 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_ACCESS
)
3009 server
->caps
|= NFS_CAP_ATIME
;
3010 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_METADATA
)
3011 server
->caps
|= NFS_CAP_CTIME
;
3012 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_MODIFY
)
3013 server
->caps
|= NFS_CAP_MTIME
;
3014 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
3015 if (res
.attr_bitmask
[2] & FATTR4_WORD2_SECURITY_LABEL
)
3016 server
->caps
|= NFS_CAP_SECURITY_LABEL
;
3018 memcpy(server
->attr_bitmask_nl
, res
.attr_bitmask
,
3019 sizeof(server
->attr_bitmask
));
3020 server
->attr_bitmask_nl
[2] &= ~FATTR4_WORD2_SECURITY_LABEL
;
3022 memcpy(server
->cache_consistency_bitmask
, res
.attr_bitmask
, sizeof(server
->cache_consistency_bitmask
));
3023 server
->cache_consistency_bitmask
[0] &= FATTR4_WORD0_CHANGE
|FATTR4_WORD0_SIZE
;
3024 server
->cache_consistency_bitmask
[1] &= FATTR4_WORD1_TIME_METADATA
|FATTR4_WORD1_TIME_MODIFY
;
3025 server
->cache_consistency_bitmask
[2] = 0;
3026 memcpy(server
->exclcreat_bitmask
, res
.exclcreat_bitmask
,
3027 sizeof(server
->exclcreat_bitmask
));
3028 server
->acl_bitmask
= res
.acl_bitmask
;
3029 server
->fh_expire_type
= res
.fh_expire_type
;
3035 int nfs4_server_capabilities(struct nfs_server
*server
, struct nfs_fh
*fhandle
)
3037 struct nfs4_exception exception
= { };
3040 err
= nfs4_handle_exception(server
,
3041 _nfs4_server_capabilities(server
, fhandle
),
3043 } while (exception
.retry
);
3047 static int _nfs4_lookup_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3048 struct nfs_fsinfo
*info
)
3051 struct nfs4_lookup_root_arg args
= {
3054 struct nfs4_lookup_res res
= {
3056 .fattr
= info
->fattr
,
3059 struct rpc_message msg
= {
3060 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOOKUP_ROOT
],
3065 bitmask
[0] = nfs4_fattr_bitmap
[0];
3066 bitmask
[1] = nfs4_fattr_bitmap
[1];
3068 * Process the label in the upcoming getfattr
3070 bitmask
[2] = nfs4_fattr_bitmap
[2] & ~FATTR4_WORD2_SECURITY_LABEL
;
3072 nfs_fattr_init(info
->fattr
);
3073 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3076 static int nfs4_lookup_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3077 struct nfs_fsinfo
*info
)
3079 struct nfs4_exception exception
= { };
3082 err
= _nfs4_lookup_root(server
, fhandle
, info
);
3083 trace_nfs4_lookup_root(server
, fhandle
, info
->fattr
, err
);
3086 case -NFS4ERR_WRONGSEC
:
3089 err
= nfs4_handle_exception(server
, err
, &exception
);
3091 } while (exception
.retry
);
3096 static int nfs4_lookup_root_sec(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3097 struct nfs_fsinfo
*info
, rpc_authflavor_t flavor
)
3099 struct rpc_auth_create_args auth_args
= {
3100 .pseudoflavor
= flavor
,
3102 struct rpc_auth
*auth
;
3105 auth
= rpcauth_create(&auth_args
, server
->client
);
3110 ret
= nfs4_lookup_root(server
, fhandle
, info
);
3116 * Retry pseudoroot lookup with various security flavors. We do this when:
3118 * NFSv4.0: the PUTROOTFH operation returns NFS4ERR_WRONGSEC
3119 * NFSv4.1: the server does not support the SECINFO_NO_NAME operation
3121 * Returns zero on success, or a negative NFS4ERR value, or a
3122 * negative errno value.
3124 static int nfs4_find_root_sec(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3125 struct nfs_fsinfo
*info
)
3127 /* Per 3530bis 15.33.5 */
3128 static const rpc_authflavor_t flav_array
[] = {
3132 RPC_AUTH_UNIX
, /* courtesy */
3135 int status
= -EPERM
;
3138 if (server
->auth_info
.flavor_len
> 0) {
3139 /* try each flavor specified by user */
3140 for (i
= 0; i
< server
->auth_info
.flavor_len
; i
++) {
3141 status
= nfs4_lookup_root_sec(server
, fhandle
, info
,
3142 server
->auth_info
.flavors
[i
]);
3143 if (status
== -NFS4ERR_WRONGSEC
|| status
== -EACCES
)
3148 /* no flavors specified by user, try default list */
3149 for (i
= 0; i
< ARRAY_SIZE(flav_array
); i
++) {
3150 status
= nfs4_lookup_root_sec(server
, fhandle
, info
,
3152 if (status
== -NFS4ERR_WRONGSEC
|| status
== -EACCES
)
3159 * -EACCESS could mean that the user doesn't have correct permissions
3160 * to access the mount. It could also mean that we tried to mount
3161 * with a gss auth flavor, but rpc.gssd isn't running. Either way,
3162 * existing mount programs don't handle -EACCES very well so it should
3163 * be mapped to -EPERM instead.
3165 if (status
== -EACCES
)
3170 static int nfs4_do_find_root_sec(struct nfs_server
*server
,
3171 struct nfs_fh
*fhandle
, struct nfs_fsinfo
*info
)
3173 int mv
= server
->nfs_client
->cl_minorversion
;
3174 return nfs_v4_minor_ops
[mv
]->find_root_sec(server
, fhandle
, info
);
3178 * nfs4_proc_get_rootfh - get file handle for server's pseudoroot
3179 * @server: initialized nfs_server handle
3180 * @fhandle: we fill in the pseudo-fs root file handle
3181 * @info: we fill in an FSINFO struct
3182 * @auth_probe: probe the auth flavours
3184 * Returns zero on success, or a negative errno.
3186 int nfs4_proc_get_rootfh(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3187 struct nfs_fsinfo
*info
,
3193 status
= nfs4_lookup_root(server
, fhandle
, info
);
3195 if (auth_probe
|| status
== NFS4ERR_WRONGSEC
)
3196 status
= nfs4_do_find_root_sec(server
, fhandle
, info
);
3199 status
= nfs4_server_capabilities(server
, fhandle
);
3201 status
= nfs4_do_fsinfo(server
, fhandle
, info
);
3203 return nfs4_map_errors(status
);
3206 static int nfs4_proc_get_root(struct nfs_server
*server
, struct nfs_fh
*mntfh
,
3207 struct nfs_fsinfo
*info
)
3210 struct nfs_fattr
*fattr
= info
->fattr
;
3211 struct nfs4_label
*label
= NULL
;
3213 error
= nfs4_server_capabilities(server
, mntfh
);
3215 dprintk("nfs4_get_root: getcaps error = %d\n", -error
);
3219 label
= nfs4_label_alloc(server
, GFP_KERNEL
);
3221 return PTR_ERR(label
);
3223 error
= nfs4_proc_getattr(server
, mntfh
, fattr
, label
);
3225 dprintk("nfs4_get_root: getattr error = %d\n", -error
);
3226 goto err_free_label
;
3229 if (fattr
->valid
& NFS_ATTR_FATTR_FSID
&&
3230 !nfs_fsid_equal(&server
->fsid
, &fattr
->fsid
))
3231 memcpy(&server
->fsid
, &fattr
->fsid
, sizeof(server
->fsid
));
3234 nfs4_label_free(label
);
3240 * Get locations and (maybe) other attributes of a referral.
3241 * Note that we'll actually follow the referral later when
3242 * we detect fsid mismatch in inode revalidation
3244 static int nfs4_get_referral(struct rpc_clnt
*client
, struct inode
*dir
,
3245 const struct qstr
*name
, struct nfs_fattr
*fattr
,
3246 struct nfs_fh
*fhandle
)
3248 int status
= -ENOMEM
;
3249 struct page
*page
= NULL
;
3250 struct nfs4_fs_locations
*locations
= NULL
;
3252 page
= alloc_page(GFP_KERNEL
);
3255 locations
= kmalloc(sizeof(struct nfs4_fs_locations
), GFP_KERNEL
);
3256 if (locations
== NULL
)
3259 status
= nfs4_proc_fs_locations(client
, dir
, name
, locations
, page
);
3264 * If the fsid didn't change, this is a migration event, not a
3265 * referral. Cause us to drop into the exception handler, which
3266 * will kick off migration recovery.
3268 if (nfs_fsid_equal(&NFS_SERVER(dir
)->fsid
, &locations
->fattr
.fsid
)) {
3269 dprintk("%s: server did not return a different fsid for"
3270 " a referral at %s\n", __func__
, name
->name
);
3271 status
= -NFS4ERR_MOVED
;
3274 /* Fixup attributes for the nfs_lookup() call to nfs_fhget() */
3275 nfs_fixup_referral_attributes(&locations
->fattr
);
3277 /* replace the lookup nfs_fattr with the locations nfs_fattr */
3278 memcpy(fattr
, &locations
->fattr
, sizeof(struct nfs_fattr
));
3279 memset(fhandle
, 0, sizeof(struct nfs_fh
));
3287 static int _nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3288 struct nfs_fattr
*fattr
, struct nfs4_label
*label
)
3290 struct nfs4_getattr_arg args
= {
3292 .bitmask
= server
->attr_bitmask
,
3294 struct nfs4_getattr_res res
= {
3299 struct rpc_message msg
= {
3300 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETATTR
],
3305 args
.bitmask
= nfs4_bitmask(server
, label
);
3307 nfs_fattr_init(fattr
);
3308 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3311 static int nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3312 struct nfs_fattr
*fattr
, struct nfs4_label
*label
)
3314 struct nfs4_exception exception
= { };
3317 err
= _nfs4_proc_getattr(server
, fhandle
, fattr
, label
);
3318 trace_nfs4_getattr(server
, fhandle
, fattr
, err
);
3319 err
= nfs4_handle_exception(server
, err
,
3321 } while (exception
.retry
);
3326 * The file is not closed if it is opened due to the a request to change
3327 * the size of the file. The open call will not be needed once the
3328 * VFS layer lookup-intents are implemented.
3330 * Close is called when the inode is destroyed.
3331 * If we haven't opened the file for O_WRONLY, we
3332 * need to in the size_change case to obtain a stateid.
3335 * Because OPEN is always done by name in nfsv4, it is
3336 * possible that we opened a different file by the same
3337 * name. We can recognize this race condition, but we
3338 * can't do anything about it besides returning an error.
3340 * This will be fixed with VFS changes (lookup-intent).
3343 nfs4_proc_setattr(struct dentry
*dentry
, struct nfs_fattr
*fattr
,
3344 struct iattr
*sattr
)
3346 struct inode
*inode
= d_inode(dentry
);
3347 struct rpc_cred
*cred
= NULL
;
3348 struct nfs4_state
*state
= NULL
;
3349 struct nfs4_label
*label
= NULL
;
3352 if (pnfs_ld_layoutret_on_setattr(inode
) &&
3353 sattr
->ia_valid
& ATTR_SIZE
&&
3354 sattr
->ia_size
< i_size_read(inode
))
3355 pnfs_commit_and_return_layout(inode
);
3357 nfs_fattr_init(fattr
);
3359 /* Deal with open(O_TRUNC) */
3360 if (sattr
->ia_valid
& ATTR_OPEN
)
3361 sattr
->ia_valid
&= ~(ATTR_MTIME
|ATTR_CTIME
);
3363 /* Optimization: if the end result is no change, don't RPC */
3364 if ((sattr
->ia_valid
& ~(ATTR_FILE
|ATTR_OPEN
)) == 0)
3367 /* Search for an existing open(O_WRITE) file */
3368 if (sattr
->ia_valid
& ATTR_FILE
) {
3369 struct nfs_open_context
*ctx
;
3371 ctx
= nfs_file_open_context(sattr
->ia_file
);
3378 label
= nfs4_label_alloc(NFS_SERVER(inode
), GFP_KERNEL
);
3380 return PTR_ERR(label
);
3382 status
= nfs4_do_setattr(inode
, cred
, fattr
, sattr
, state
, NULL
, label
);
3384 nfs_setattr_update_inode(inode
, sattr
, fattr
);
3385 nfs_setsecurity(inode
, fattr
, label
);
3387 nfs4_label_free(label
);
3391 static int _nfs4_proc_lookup(struct rpc_clnt
*clnt
, struct inode
*dir
,
3392 const struct qstr
*name
, struct nfs_fh
*fhandle
,
3393 struct nfs_fattr
*fattr
, struct nfs4_label
*label
)
3395 struct nfs_server
*server
= NFS_SERVER(dir
);
3397 struct nfs4_lookup_arg args
= {
3398 .bitmask
= server
->attr_bitmask
,
3399 .dir_fh
= NFS_FH(dir
),
3402 struct nfs4_lookup_res res
= {
3408 struct rpc_message msg
= {
3409 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOOKUP
],
3414 args
.bitmask
= nfs4_bitmask(server
, label
);
3416 nfs_fattr_init(fattr
);
3418 dprintk("NFS call lookup %s\n", name
->name
);
3419 status
= nfs4_call_sync(clnt
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3420 dprintk("NFS reply lookup: %d\n", status
);
3424 static void nfs_fixup_secinfo_attributes(struct nfs_fattr
*fattr
)
3426 fattr
->valid
|= NFS_ATTR_FATTR_TYPE
| NFS_ATTR_FATTR_MODE
|
3427 NFS_ATTR_FATTR_NLINK
| NFS_ATTR_FATTR_MOUNTPOINT
;
3428 fattr
->mode
= S_IFDIR
| S_IRUGO
| S_IXUGO
;
3432 static int nfs4_proc_lookup_common(struct rpc_clnt
**clnt
, struct inode
*dir
,
3433 struct qstr
*name
, struct nfs_fh
*fhandle
,
3434 struct nfs_fattr
*fattr
, struct nfs4_label
*label
)
3436 struct nfs4_exception exception
= { };
3437 struct rpc_clnt
*client
= *clnt
;
3440 err
= _nfs4_proc_lookup(client
, dir
, name
, fhandle
, fattr
, label
);
3441 trace_nfs4_lookup(dir
, name
, err
);
3443 case -NFS4ERR_BADNAME
:
3446 case -NFS4ERR_MOVED
:
3447 err
= nfs4_get_referral(client
, dir
, name
, fattr
, fhandle
);
3448 if (err
== -NFS4ERR_MOVED
)
3449 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
, &exception
);
3451 case -NFS4ERR_WRONGSEC
:
3453 if (client
!= *clnt
)
3455 client
= nfs4_negotiate_security(client
, dir
, name
);
3457 return PTR_ERR(client
);
3459 exception
.retry
= 1;
3462 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
, &exception
);
3464 } while (exception
.retry
);
3469 else if (client
!= *clnt
)
3470 rpc_shutdown_client(client
);
3475 static int nfs4_proc_lookup(struct inode
*dir
, struct qstr
*name
,
3476 struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
,
3477 struct nfs4_label
*label
)
3480 struct rpc_clnt
*client
= NFS_CLIENT(dir
);
3482 status
= nfs4_proc_lookup_common(&client
, dir
, name
, fhandle
, fattr
, label
);
3483 if (client
!= NFS_CLIENT(dir
)) {
3484 rpc_shutdown_client(client
);
3485 nfs_fixup_secinfo_attributes(fattr
);
3491 nfs4_proc_lookup_mountpoint(struct inode
*dir
, struct qstr
*name
,
3492 struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
3494 struct rpc_clnt
*client
= NFS_CLIENT(dir
);
3497 status
= nfs4_proc_lookup_common(&client
, dir
, name
, fhandle
, fattr
, NULL
);
3499 return ERR_PTR(status
);
3500 return (client
== NFS_CLIENT(dir
)) ? rpc_clone_client(client
) : client
;
3503 static int _nfs4_proc_access(struct inode
*inode
, struct nfs_access_entry
*entry
)
3505 struct nfs_server
*server
= NFS_SERVER(inode
);
3506 struct nfs4_accessargs args
= {
3507 .fh
= NFS_FH(inode
),
3508 .bitmask
= server
->cache_consistency_bitmask
,
3510 struct nfs4_accessres res
= {
3513 struct rpc_message msg
= {
3514 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_ACCESS
],
3517 .rpc_cred
= entry
->cred
,
3519 int mode
= entry
->mask
;
3523 * Determine which access bits we want to ask for...
3525 if (mode
& MAY_READ
)
3526 args
.access
|= NFS4_ACCESS_READ
;
3527 if (S_ISDIR(inode
->i_mode
)) {
3528 if (mode
& MAY_WRITE
)
3529 args
.access
|= NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
| NFS4_ACCESS_DELETE
;
3530 if (mode
& MAY_EXEC
)
3531 args
.access
|= NFS4_ACCESS_LOOKUP
;
3533 if (mode
& MAY_WRITE
)
3534 args
.access
|= NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
;
3535 if (mode
& MAY_EXEC
)
3536 args
.access
|= NFS4_ACCESS_EXECUTE
;
3539 res
.fattr
= nfs_alloc_fattr();
3540 if (res
.fattr
== NULL
)
3543 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3545 nfs_access_set_mask(entry
, res
.access
);
3546 nfs_refresh_inode(inode
, res
.fattr
);
3548 nfs_free_fattr(res
.fattr
);
3552 static int nfs4_proc_access(struct inode
*inode
, struct nfs_access_entry
*entry
)
3554 struct nfs4_exception exception
= { };
3557 err
= _nfs4_proc_access(inode
, entry
);
3558 trace_nfs4_access(inode
, err
);
3559 err
= nfs4_handle_exception(NFS_SERVER(inode
), err
,
3561 } while (exception
.retry
);
3566 * TODO: For the time being, we don't try to get any attributes
3567 * along with any of the zero-copy operations READ, READDIR,
3570 * In the case of the first three, we want to put the GETATTR
3571 * after the read-type operation -- this is because it is hard
3572 * to predict the length of a GETATTR response in v4, and thus
3573 * align the READ data correctly. This means that the GETATTR
3574 * may end up partially falling into the page cache, and we should
3575 * shift it into the 'tail' of the xdr_buf before processing.
3576 * To do this efficiently, we need to know the total length
3577 * of data received, which doesn't seem to be available outside
3580 * In the case of WRITE, we also want to put the GETATTR after
3581 * the operation -- in this case because we want to make sure
3582 * we get the post-operation mtime and size.
3584 * Both of these changes to the XDR layer would in fact be quite
3585 * minor, but I decided to leave them for a subsequent patch.
3587 static int _nfs4_proc_readlink(struct inode
*inode
, struct page
*page
,
3588 unsigned int pgbase
, unsigned int pglen
)
3590 struct nfs4_readlink args
= {
3591 .fh
= NFS_FH(inode
),
3596 struct nfs4_readlink_res res
;
3597 struct rpc_message msg
= {
3598 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READLINK
],
3603 return nfs4_call_sync(NFS_SERVER(inode
)->client
, NFS_SERVER(inode
), &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3606 static int nfs4_proc_readlink(struct inode
*inode
, struct page
*page
,
3607 unsigned int pgbase
, unsigned int pglen
)
3609 struct nfs4_exception exception
= { };
3612 err
= _nfs4_proc_readlink(inode
, page
, pgbase
, pglen
);
3613 trace_nfs4_readlink(inode
, err
);
3614 err
= nfs4_handle_exception(NFS_SERVER(inode
), err
,
3616 } while (exception
.retry
);
3621 * This is just for mknod. open(O_CREAT) will always do ->open_context().
3624 nfs4_proc_create(struct inode
*dir
, struct dentry
*dentry
, struct iattr
*sattr
,
3627 struct nfs4_label l
, *ilabel
= NULL
;
3628 struct nfs_open_context
*ctx
;
3629 struct nfs4_state
*state
;
3632 ctx
= alloc_nfs_open_context(dentry
, FMODE_READ
);
3634 return PTR_ERR(ctx
);
3636 ilabel
= nfs4_label_init_security(dir
, dentry
, sattr
, &l
);
3638 sattr
->ia_mode
&= ~current_umask();
3639 state
= nfs4_do_open(dir
, ctx
, flags
, sattr
, ilabel
, NULL
);
3640 if (IS_ERR(state
)) {
3641 status
= PTR_ERR(state
);
3645 nfs4_label_release_security(ilabel
);
3646 put_nfs_open_context(ctx
);
3650 static int _nfs4_proc_remove(struct inode
*dir
, struct qstr
*name
)
3652 struct nfs_server
*server
= NFS_SERVER(dir
);
3653 struct nfs_removeargs args
= {
3657 struct nfs_removeres res
= {
3660 struct rpc_message msg
= {
3661 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_REMOVE
],
3667 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 1);
3669 update_changeattr(dir
, &res
.cinfo
);
3673 static int nfs4_proc_remove(struct inode
*dir
, struct qstr
*name
)
3675 struct nfs4_exception exception
= { };
3678 err
= _nfs4_proc_remove(dir
, name
);
3679 trace_nfs4_remove(dir
, name
, err
);
3680 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
3682 } while (exception
.retry
);
3686 static void nfs4_proc_unlink_setup(struct rpc_message
*msg
, struct inode
*dir
)
3688 struct nfs_server
*server
= NFS_SERVER(dir
);
3689 struct nfs_removeargs
*args
= msg
->rpc_argp
;
3690 struct nfs_removeres
*res
= msg
->rpc_resp
;
3692 res
->server
= server
;
3693 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_REMOVE
];
3694 nfs4_init_sequence(&args
->seq_args
, &res
->seq_res
, 1);
3696 nfs_fattr_init(res
->dir_attr
);
3699 static void nfs4_proc_unlink_rpc_prepare(struct rpc_task
*task
, struct nfs_unlinkdata
*data
)
3701 nfs4_setup_sequence(NFS_SERVER(data
->dir
),
3702 &data
->args
.seq_args
,
3707 static int nfs4_proc_unlink_done(struct rpc_task
*task
, struct inode
*dir
)
3709 struct nfs_unlinkdata
*data
= task
->tk_calldata
;
3710 struct nfs_removeres
*res
= &data
->res
;
3712 if (!nfs4_sequence_done(task
, &res
->seq_res
))
3714 if (nfs4_async_handle_error(task
, res
->server
, NULL
,
3715 &data
->timeout
) == -EAGAIN
)
3717 update_changeattr(dir
, &res
->cinfo
);
3721 static void nfs4_proc_rename_setup(struct rpc_message
*msg
, struct inode
*dir
)
3723 struct nfs_server
*server
= NFS_SERVER(dir
);
3724 struct nfs_renameargs
*arg
= msg
->rpc_argp
;
3725 struct nfs_renameres
*res
= msg
->rpc_resp
;
3727 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENAME
];
3728 res
->server
= server
;
3729 nfs4_init_sequence(&arg
->seq_args
, &res
->seq_res
, 1);
3732 static void nfs4_proc_rename_rpc_prepare(struct rpc_task
*task
, struct nfs_renamedata
*data
)
3734 nfs4_setup_sequence(NFS_SERVER(data
->old_dir
),
3735 &data
->args
.seq_args
,
3740 static int nfs4_proc_rename_done(struct rpc_task
*task
, struct inode
*old_dir
,
3741 struct inode
*new_dir
)
3743 struct nfs_renamedata
*data
= task
->tk_calldata
;
3744 struct nfs_renameres
*res
= &data
->res
;
3746 if (!nfs4_sequence_done(task
, &res
->seq_res
))
3748 if (nfs4_async_handle_error(task
, res
->server
, NULL
, &data
->timeout
) == -EAGAIN
)
3751 update_changeattr(old_dir
, &res
->old_cinfo
);
3752 update_changeattr(new_dir
, &res
->new_cinfo
);
3756 static int _nfs4_proc_link(struct inode
*inode
, struct inode
*dir
, struct qstr
*name
)
3758 struct nfs_server
*server
= NFS_SERVER(inode
);
3759 struct nfs4_link_arg arg
= {
3760 .fh
= NFS_FH(inode
),
3761 .dir_fh
= NFS_FH(dir
),
3763 .bitmask
= server
->attr_bitmask
,
3765 struct nfs4_link_res res
= {
3769 struct rpc_message msg
= {
3770 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LINK
],
3774 int status
= -ENOMEM
;
3776 res
.fattr
= nfs_alloc_fattr();
3777 if (res
.fattr
== NULL
)
3780 res
.label
= nfs4_label_alloc(server
, GFP_KERNEL
);
3781 if (IS_ERR(res
.label
)) {
3782 status
= PTR_ERR(res
.label
);
3785 arg
.bitmask
= nfs4_bitmask(server
, res
.label
);
3787 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
3789 update_changeattr(dir
, &res
.cinfo
);
3790 status
= nfs_post_op_update_inode(inode
, res
.fattr
);
3792 nfs_setsecurity(inode
, res
.fattr
, res
.label
);
3796 nfs4_label_free(res
.label
);
3799 nfs_free_fattr(res
.fattr
);
3803 static int nfs4_proc_link(struct inode
*inode
, struct inode
*dir
, struct qstr
*name
)
3805 struct nfs4_exception exception
= { };
3808 err
= nfs4_handle_exception(NFS_SERVER(inode
),
3809 _nfs4_proc_link(inode
, dir
, name
),
3811 } while (exception
.retry
);
3815 struct nfs4_createdata
{
3816 struct rpc_message msg
;
3817 struct nfs4_create_arg arg
;
3818 struct nfs4_create_res res
;
3820 struct nfs_fattr fattr
;
3821 struct nfs4_label
*label
;
3824 static struct nfs4_createdata
*nfs4_alloc_createdata(struct inode
*dir
,
3825 struct qstr
*name
, struct iattr
*sattr
, u32 ftype
)
3827 struct nfs4_createdata
*data
;
3829 data
= kzalloc(sizeof(*data
), GFP_KERNEL
);
3831 struct nfs_server
*server
= NFS_SERVER(dir
);
3833 data
->label
= nfs4_label_alloc(server
, GFP_KERNEL
);
3834 if (IS_ERR(data
->label
))
3837 data
->msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CREATE
];
3838 data
->msg
.rpc_argp
= &data
->arg
;
3839 data
->msg
.rpc_resp
= &data
->res
;
3840 data
->arg
.dir_fh
= NFS_FH(dir
);
3841 data
->arg
.server
= server
;
3842 data
->arg
.name
= name
;
3843 data
->arg
.attrs
= sattr
;
3844 data
->arg
.ftype
= ftype
;
3845 data
->arg
.bitmask
= nfs4_bitmask(server
, data
->label
);
3846 data
->res
.server
= server
;
3847 data
->res
.fh
= &data
->fh
;
3848 data
->res
.fattr
= &data
->fattr
;
3849 data
->res
.label
= data
->label
;
3850 nfs_fattr_init(data
->res
.fattr
);
3858 static int nfs4_do_create(struct inode
*dir
, struct dentry
*dentry
, struct nfs4_createdata
*data
)
3860 int status
= nfs4_call_sync(NFS_SERVER(dir
)->client
, NFS_SERVER(dir
), &data
->msg
,
3861 &data
->arg
.seq_args
, &data
->res
.seq_res
, 1);
3863 update_changeattr(dir
, &data
->res
.dir_cinfo
);
3864 status
= nfs_instantiate(dentry
, data
->res
.fh
, data
->res
.fattr
, data
->res
.label
);
3869 static void nfs4_free_createdata(struct nfs4_createdata
*data
)
3871 nfs4_label_free(data
->label
);
3875 static int _nfs4_proc_symlink(struct inode
*dir
, struct dentry
*dentry
,
3876 struct page
*page
, unsigned int len
, struct iattr
*sattr
,
3877 struct nfs4_label
*label
)
3879 struct nfs4_createdata
*data
;
3880 int status
= -ENAMETOOLONG
;
3882 if (len
> NFS4_MAXPATHLEN
)
3886 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4LNK
);
3890 data
->msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SYMLINK
];
3891 data
->arg
.u
.symlink
.pages
= &page
;
3892 data
->arg
.u
.symlink
.len
= len
;
3893 data
->arg
.label
= label
;
3895 status
= nfs4_do_create(dir
, dentry
, data
);
3897 nfs4_free_createdata(data
);
3902 static int nfs4_proc_symlink(struct inode
*dir
, struct dentry
*dentry
,
3903 struct page
*page
, unsigned int len
, struct iattr
*sattr
)
3905 struct nfs4_exception exception
= { };
3906 struct nfs4_label l
, *label
= NULL
;
3909 label
= nfs4_label_init_security(dir
, dentry
, sattr
, &l
);
3912 err
= _nfs4_proc_symlink(dir
, dentry
, page
, len
, sattr
, label
);
3913 trace_nfs4_symlink(dir
, &dentry
->d_name
, err
);
3914 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
3916 } while (exception
.retry
);
3918 nfs4_label_release_security(label
);
3922 static int _nfs4_proc_mkdir(struct inode
*dir
, struct dentry
*dentry
,
3923 struct iattr
*sattr
, struct nfs4_label
*label
)
3925 struct nfs4_createdata
*data
;
3926 int status
= -ENOMEM
;
3928 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4DIR
);
3932 data
->arg
.label
= label
;
3933 status
= nfs4_do_create(dir
, dentry
, data
);
3935 nfs4_free_createdata(data
);
3940 static int nfs4_proc_mkdir(struct inode
*dir
, struct dentry
*dentry
,
3941 struct iattr
*sattr
)
3943 struct nfs4_exception exception
= { };
3944 struct nfs4_label l
, *label
= NULL
;
3947 label
= nfs4_label_init_security(dir
, dentry
, sattr
, &l
);
3949 sattr
->ia_mode
&= ~current_umask();
3951 err
= _nfs4_proc_mkdir(dir
, dentry
, sattr
, label
);
3952 trace_nfs4_mkdir(dir
, &dentry
->d_name
, err
);
3953 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
3955 } while (exception
.retry
);
3956 nfs4_label_release_security(label
);
3961 static int _nfs4_proc_readdir(struct dentry
*dentry
, struct rpc_cred
*cred
,
3962 u64 cookie
, struct page
**pages
, unsigned int count
, int plus
)
3964 struct inode
*dir
= d_inode(dentry
);
3965 struct nfs4_readdir_arg args
= {
3970 .bitmask
= NFS_SERVER(d_inode(dentry
))->attr_bitmask
,
3973 struct nfs4_readdir_res res
;
3974 struct rpc_message msg
= {
3975 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READDIR
],
3982 dprintk("%s: dentry = %pd2, cookie = %Lu\n", __func__
,
3984 (unsigned long long)cookie
);
3985 nfs4_setup_readdir(cookie
, NFS_I(dir
)->cookieverf
, dentry
, &args
);
3986 res
.pgbase
= args
.pgbase
;
3987 status
= nfs4_call_sync(NFS_SERVER(dir
)->client
, NFS_SERVER(dir
), &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3989 memcpy(NFS_I(dir
)->cookieverf
, res
.verifier
.data
, NFS4_VERIFIER_SIZE
);
3990 status
+= args
.pgbase
;
3993 nfs_invalidate_atime(dir
);
3995 dprintk("%s: returns %d\n", __func__
, status
);
3999 static int nfs4_proc_readdir(struct dentry
*dentry
, struct rpc_cred
*cred
,
4000 u64 cookie
, struct page
**pages
, unsigned int count
, int plus
)
4002 struct nfs4_exception exception
= { };
4005 err
= _nfs4_proc_readdir(dentry
, cred
, cookie
,
4006 pages
, count
, plus
);
4007 trace_nfs4_readdir(d_inode(dentry
), err
);
4008 err
= nfs4_handle_exception(NFS_SERVER(d_inode(dentry
)), err
,
4010 } while (exception
.retry
);
4014 static int _nfs4_proc_mknod(struct inode
*dir
, struct dentry
*dentry
,
4015 struct iattr
*sattr
, struct nfs4_label
*label
, dev_t rdev
)
4017 struct nfs4_createdata
*data
;
4018 int mode
= sattr
->ia_mode
;
4019 int status
= -ENOMEM
;
4021 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4SOCK
);
4026 data
->arg
.ftype
= NF4FIFO
;
4027 else if (S_ISBLK(mode
)) {
4028 data
->arg
.ftype
= NF4BLK
;
4029 data
->arg
.u
.device
.specdata1
= MAJOR(rdev
);
4030 data
->arg
.u
.device
.specdata2
= MINOR(rdev
);
4032 else if (S_ISCHR(mode
)) {
4033 data
->arg
.ftype
= NF4CHR
;
4034 data
->arg
.u
.device
.specdata1
= MAJOR(rdev
);
4035 data
->arg
.u
.device
.specdata2
= MINOR(rdev
);
4036 } else if (!S_ISSOCK(mode
)) {
4041 data
->arg
.label
= label
;
4042 status
= nfs4_do_create(dir
, dentry
, data
);
4044 nfs4_free_createdata(data
);
4049 static int nfs4_proc_mknod(struct inode
*dir
, struct dentry
*dentry
,
4050 struct iattr
*sattr
, dev_t rdev
)
4052 struct nfs4_exception exception
= { };
4053 struct nfs4_label l
, *label
= NULL
;
4056 label
= nfs4_label_init_security(dir
, dentry
, sattr
, &l
);
4058 sattr
->ia_mode
&= ~current_umask();
4060 err
= _nfs4_proc_mknod(dir
, dentry
, sattr
, label
, rdev
);
4061 trace_nfs4_mknod(dir
, &dentry
->d_name
, err
);
4062 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
4064 } while (exception
.retry
);
4066 nfs4_label_release_security(label
);
4071 static int _nfs4_proc_statfs(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
4072 struct nfs_fsstat
*fsstat
)
4074 struct nfs4_statfs_arg args
= {
4076 .bitmask
= server
->attr_bitmask
,
4078 struct nfs4_statfs_res res
= {
4081 struct rpc_message msg
= {
4082 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_STATFS
],
4087 nfs_fattr_init(fsstat
->fattr
);
4088 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
4091 static int nfs4_proc_statfs(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsstat
*fsstat
)
4093 struct nfs4_exception exception
= { };
4096 err
= nfs4_handle_exception(server
,
4097 _nfs4_proc_statfs(server
, fhandle
, fsstat
),
4099 } while (exception
.retry
);
4103 static int _nfs4_do_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
4104 struct nfs_fsinfo
*fsinfo
)
4106 struct nfs4_fsinfo_arg args
= {
4108 .bitmask
= server
->attr_bitmask
,
4110 struct nfs4_fsinfo_res res
= {
4113 struct rpc_message msg
= {
4114 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FSINFO
],
4119 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
4122 static int nfs4_do_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsinfo
*fsinfo
)
4124 struct nfs4_exception exception
= { };
4125 unsigned long now
= jiffies
;
4129 err
= _nfs4_do_fsinfo(server
, fhandle
, fsinfo
);
4130 trace_nfs4_fsinfo(server
, fhandle
, fsinfo
->fattr
, err
);
4132 struct nfs_client
*clp
= server
->nfs_client
;
4134 spin_lock(&clp
->cl_lock
);
4135 clp
->cl_lease_time
= fsinfo
->lease_time
* HZ
;
4136 clp
->cl_last_renewal
= now
;
4137 spin_unlock(&clp
->cl_lock
);
4140 err
= nfs4_handle_exception(server
, err
, &exception
);
4141 } while (exception
.retry
);
4145 static int nfs4_proc_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsinfo
*fsinfo
)
4149 nfs_fattr_init(fsinfo
->fattr
);
4150 error
= nfs4_do_fsinfo(server
, fhandle
, fsinfo
);
4152 /* block layout checks this! */
4153 server
->pnfs_blksize
= fsinfo
->blksize
;
4154 set_pnfs_layoutdriver(server
, fhandle
, fsinfo
->layouttype
);
4160 static int _nfs4_proc_pathconf(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
4161 struct nfs_pathconf
*pathconf
)
4163 struct nfs4_pathconf_arg args
= {
4165 .bitmask
= server
->attr_bitmask
,
4167 struct nfs4_pathconf_res res
= {
4168 .pathconf
= pathconf
,
4170 struct rpc_message msg
= {
4171 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_PATHCONF
],
4176 /* None of the pathconf attributes are mandatory to implement */
4177 if ((args
.bitmask
[0] & nfs4_pathconf_bitmap
[0]) == 0) {
4178 memset(pathconf
, 0, sizeof(*pathconf
));
4182 nfs_fattr_init(pathconf
->fattr
);
4183 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
4186 static int nfs4_proc_pathconf(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
4187 struct nfs_pathconf
*pathconf
)
4189 struct nfs4_exception exception
= { };
4193 err
= nfs4_handle_exception(server
,
4194 _nfs4_proc_pathconf(server
, fhandle
, pathconf
),
4196 } while (exception
.retry
);
4200 int nfs4_set_rw_stateid(nfs4_stateid
*stateid
,
4201 const struct nfs_open_context
*ctx
,
4202 const struct nfs_lock_context
*l_ctx
,
4205 const struct nfs_lockowner
*lockowner
= NULL
;
4208 lockowner
= &l_ctx
->lockowner
;
4209 return nfs4_select_rw_stateid(stateid
, ctx
->state
, fmode
, lockowner
);
4211 EXPORT_SYMBOL_GPL(nfs4_set_rw_stateid
);
4213 static bool nfs4_stateid_is_current(nfs4_stateid
*stateid
,
4214 const struct nfs_open_context
*ctx
,
4215 const struct nfs_lock_context
*l_ctx
,
4218 nfs4_stateid current_stateid
;
4220 /* If the current stateid represents a lost lock, then exit */
4221 if (nfs4_set_rw_stateid(¤t_stateid
, ctx
, l_ctx
, fmode
) == -EIO
)
4223 return nfs4_stateid_match(stateid
, ¤t_stateid
);
4226 static bool nfs4_error_stateid_expired(int err
)
4229 case -NFS4ERR_DELEG_REVOKED
:
4230 case -NFS4ERR_ADMIN_REVOKED
:
4231 case -NFS4ERR_BAD_STATEID
:
4232 case -NFS4ERR_STALE_STATEID
:
4233 case -NFS4ERR_OLD_STATEID
:
4234 case -NFS4ERR_OPENMODE
:
4235 case -NFS4ERR_EXPIRED
:
4241 void __nfs4_read_done_cb(struct nfs_pgio_header
*hdr
)
4243 nfs_invalidate_atime(hdr
->inode
);
4246 static int nfs4_read_done_cb(struct rpc_task
*task
, struct nfs_pgio_header
*hdr
)
4248 struct nfs_server
*server
= NFS_SERVER(hdr
->inode
);
4250 trace_nfs4_read(hdr
, task
->tk_status
);
4251 if (nfs4_async_handle_error(task
, server
,
4252 hdr
->args
.context
->state
,
4254 rpc_restart_call_prepare(task
);
4258 __nfs4_read_done_cb(hdr
);
4259 if (task
->tk_status
> 0)
4260 renew_lease(server
, hdr
->timestamp
);
4264 static bool nfs4_read_stateid_changed(struct rpc_task
*task
,
4265 struct nfs_pgio_args
*args
)
4268 if (!nfs4_error_stateid_expired(task
->tk_status
) ||
4269 nfs4_stateid_is_current(&args
->stateid
,
4274 rpc_restart_call_prepare(task
);
4278 static int nfs4_read_done(struct rpc_task
*task
, struct nfs_pgio_header
*hdr
)
4281 dprintk("--> %s\n", __func__
);
4283 if (!nfs4_sequence_done(task
, &hdr
->res
.seq_res
))
4285 if (nfs4_read_stateid_changed(task
, &hdr
->args
))
4287 return hdr
->pgio_done_cb
? hdr
->pgio_done_cb(task
, hdr
) :
4288 nfs4_read_done_cb(task
, hdr
);
4291 static void nfs4_proc_read_setup(struct nfs_pgio_header
*hdr
,
4292 struct rpc_message
*msg
)
4294 hdr
->timestamp
= jiffies
;
4295 hdr
->pgio_done_cb
= nfs4_read_done_cb
;
4296 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READ
];
4297 nfs4_init_sequence(&hdr
->args
.seq_args
, &hdr
->res
.seq_res
, 0);
4300 static int nfs4_proc_pgio_rpc_prepare(struct rpc_task
*task
,
4301 struct nfs_pgio_header
*hdr
)
4303 if (nfs4_setup_sequence(NFS_SERVER(hdr
->inode
),
4304 &hdr
->args
.seq_args
,
4308 if (nfs4_set_rw_stateid(&hdr
->args
.stateid
, hdr
->args
.context
,
4309 hdr
->args
.lock_context
,
4310 hdr
->rw_ops
->rw_mode
) == -EIO
)
4312 if (unlikely(test_bit(NFS_CONTEXT_BAD
, &hdr
->args
.context
->flags
)))
4317 static int nfs4_write_done_cb(struct rpc_task
*task
,
4318 struct nfs_pgio_header
*hdr
)
4320 struct inode
*inode
= hdr
->inode
;
4322 trace_nfs4_write(hdr
, task
->tk_status
);
4323 if (nfs4_async_handle_error(task
, NFS_SERVER(inode
),
4324 hdr
->args
.context
->state
,
4326 rpc_restart_call_prepare(task
);
4329 if (task
->tk_status
>= 0) {
4330 renew_lease(NFS_SERVER(inode
), hdr
->timestamp
);
4331 nfs_writeback_update_inode(hdr
);
4336 static bool nfs4_write_stateid_changed(struct rpc_task
*task
,
4337 struct nfs_pgio_args
*args
)
4340 if (!nfs4_error_stateid_expired(task
->tk_status
) ||
4341 nfs4_stateid_is_current(&args
->stateid
,
4346 rpc_restart_call_prepare(task
);
4350 static int nfs4_write_done(struct rpc_task
*task
, struct nfs_pgio_header
*hdr
)
4352 if (!nfs4_sequence_done(task
, &hdr
->res
.seq_res
))
4354 if (nfs4_write_stateid_changed(task
, &hdr
->args
))
4356 return hdr
->pgio_done_cb
? hdr
->pgio_done_cb(task
, hdr
) :
4357 nfs4_write_done_cb(task
, hdr
);
4361 bool nfs4_write_need_cache_consistency_data(struct nfs_pgio_header
*hdr
)
4363 /* Don't request attributes for pNFS or O_DIRECT writes */
4364 if (hdr
->ds_clp
!= NULL
|| hdr
->dreq
!= NULL
)
4366 /* Otherwise, request attributes if and only if we don't hold
4369 return nfs4_have_delegation(hdr
->inode
, FMODE_READ
) == 0;
4372 static void nfs4_proc_write_setup(struct nfs_pgio_header
*hdr
,
4373 struct rpc_message
*msg
)
4375 struct nfs_server
*server
= NFS_SERVER(hdr
->inode
);
4377 if (!nfs4_write_need_cache_consistency_data(hdr
)) {
4378 hdr
->args
.bitmask
= NULL
;
4379 hdr
->res
.fattr
= NULL
;
4381 hdr
->args
.bitmask
= server
->cache_consistency_bitmask
;
4383 if (!hdr
->pgio_done_cb
)
4384 hdr
->pgio_done_cb
= nfs4_write_done_cb
;
4385 hdr
->res
.server
= server
;
4386 hdr
->timestamp
= jiffies
;
4388 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_WRITE
];
4389 nfs4_init_sequence(&hdr
->args
.seq_args
, &hdr
->res
.seq_res
, 1);
4392 static void nfs4_proc_commit_rpc_prepare(struct rpc_task
*task
, struct nfs_commit_data
*data
)
4394 nfs4_setup_sequence(NFS_SERVER(data
->inode
),
4395 &data
->args
.seq_args
,
4400 static int nfs4_commit_done_cb(struct rpc_task
*task
, struct nfs_commit_data
*data
)
4402 struct inode
*inode
= data
->inode
;
4404 trace_nfs4_commit(data
, task
->tk_status
);
4405 if (nfs4_async_handle_error(task
, NFS_SERVER(inode
),
4406 NULL
, NULL
) == -EAGAIN
) {
4407 rpc_restart_call_prepare(task
);
4413 static int nfs4_commit_done(struct rpc_task
*task
, struct nfs_commit_data
*data
)
4415 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
4417 return data
->commit_done_cb(task
, data
);
4420 static void nfs4_proc_commit_setup(struct nfs_commit_data
*data
, struct rpc_message
*msg
)
4422 struct nfs_server
*server
= NFS_SERVER(data
->inode
);
4424 if (data
->commit_done_cb
== NULL
)
4425 data
->commit_done_cb
= nfs4_commit_done_cb
;
4426 data
->res
.server
= server
;
4427 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_COMMIT
];
4428 nfs4_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
4431 struct nfs4_renewdata
{
4432 struct nfs_client
*client
;
4433 unsigned long timestamp
;
4437 * nfs4_proc_async_renew(): This is not one of the nfs_rpc_ops; it is a special
4438 * standalone procedure for queueing an asynchronous RENEW.
4440 static void nfs4_renew_release(void *calldata
)
4442 struct nfs4_renewdata
*data
= calldata
;
4443 struct nfs_client
*clp
= data
->client
;
4445 if (atomic_read(&clp
->cl_count
) > 1)
4446 nfs4_schedule_state_renewal(clp
);
4447 nfs_put_client(clp
);
4451 static void nfs4_renew_done(struct rpc_task
*task
, void *calldata
)
4453 struct nfs4_renewdata
*data
= calldata
;
4454 struct nfs_client
*clp
= data
->client
;
4455 unsigned long timestamp
= data
->timestamp
;
4457 trace_nfs4_renew_async(clp
, task
->tk_status
);
4458 switch (task
->tk_status
) {
4461 case -NFS4ERR_LEASE_MOVED
:
4462 nfs4_schedule_lease_moved_recovery(clp
);
4465 /* Unless we're shutting down, schedule state recovery! */
4466 if (test_bit(NFS_CS_RENEWD
, &clp
->cl_res_state
) == 0)
4468 if (task
->tk_status
!= NFS4ERR_CB_PATH_DOWN
) {
4469 nfs4_schedule_lease_recovery(clp
);
4472 nfs4_schedule_path_down_recovery(clp
);
4474 do_renew_lease(clp
, timestamp
);
4477 static const struct rpc_call_ops nfs4_renew_ops
= {
4478 .rpc_call_done
= nfs4_renew_done
,
4479 .rpc_release
= nfs4_renew_release
,
4482 static int nfs4_proc_async_renew(struct nfs_client
*clp
, struct rpc_cred
*cred
, unsigned renew_flags
)
4484 struct rpc_message msg
= {
4485 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENEW
],
4489 struct nfs4_renewdata
*data
;
4491 if (renew_flags
== 0)
4493 if (!atomic_inc_not_zero(&clp
->cl_count
))
4495 data
= kmalloc(sizeof(*data
), GFP_NOFS
);
4499 data
->timestamp
= jiffies
;
4500 return rpc_call_async(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
,
4501 &nfs4_renew_ops
, data
);
4504 static int nfs4_proc_renew(struct nfs_client
*clp
, struct rpc_cred
*cred
)
4506 struct rpc_message msg
= {
4507 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENEW
],
4511 unsigned long now
= jiffies
;
4514 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
4517 do_renew_lease(clp
, now
);
4521 static inline int nfs4_server_supports_acls(struct nfs_server
*server
)
4523 return server
->caps
& NFS_CAP_ACLS
;
4526 /* Assuming that XATTR_SIZE_MAX is a multiple of PAGE_SIZE, and that
4527 * it's OK to put sizeof(void) * (XATTR_SIZE_MAX/PAGE_SIZE) bytes on
4530 #define NFS4ACL_MAXPAGES DIV_ROUND_UP(XATTR_SIZE_MAX, PAGE_SIZE)
4532 static int buf_to_pages_noslab(const void *buf
, size_t buflen
,
4533 struct page
**pages
, unsigned int *pgbase
)
4535 struct page
*newpage
, **spages
;
4541 len
= min_t(size_t, PAGE_SIZE
, buflen
);
4542 newpage
= alloc_page(GFP_KERNEL
);
4544 if (newpage
== NULL
)
4546 memcpy(page_address(newpage
), buf
, len
);
4551 } while (buflen
!= 0);
4557 __free_page(spages
[rc
-1]);
4561 struct nfs4_cached_acl
{
4567 static void nfs4_set_cached_acl(struct inode
*inode
, struct nfs4_cached_acl
*acl
)
4569 struct nfs_inode
*nfsi
= NFS_I(inode
);
4571 spin_lock(&inode
->i_lock
);
4572 kfree(nfsi
->nfs4_acl
);
4573 nfsi
->nfs4_acl
= acl
;
4574 spin_unlock(&inode
->i_lock
);
4577 static void nfs4_zap_acl_attr(struct inode
*inode
)
4579 nfs4_set_cached_acl(inode
, NULL
);
4582 static inline ssize_t
nfs4_read_cached_acl(struct inode
*inode
, char *buf
, size_t buflen
)
4584 struct nfs_inode
*nfsi
= NFS_I(inode
);
4585 struct nfs4_cached_acl
*acl
;
4588 spin_lock(&inode
->i_lock
);
4589 acl
= nfsi
->nfs4_acl
;
4592 if (buf
== NULL
) /* user is just asking for length */
4594 if (acl
->cached
== 0)
4596 ret
= -ERANGE
; /* see getxattr(2) man page */
4597 if (acl
->len
> buflen
)
4599 memcpy(buf
, acl
->data
, acl
->len
);
4603 spin_unlock(&inode
->i_lock
);
4607 static void nfs4_write_cached_acl(struct inode
*inode
, struct page
**pages
, size_t pgbase
, size_t acl_len
)
4609 struct nfs4_cached_acl
*acl
;
4610 size_t buflen
= sizeof(*acl
) + acl_len
;
4612 if (buflen
<= PAGE_SIZE
) {
4613 acl
= kmalloc(buflen
, GFP_KERNEL
);
4617 _copy_from_pages(acl
->data
, pages
, pgbase
, acl_len
);
4619 acl
= kmalloc(sizeof(*acl
), GFP_KERNEL
);
4626 nfs4_set_cached_acl(inode
, acl
);
4630 * The getxattr API returns the required buffer length when called with a
4631 * NULL buf. The NFSv4 acl tool then calls getxattr again after allocating
4632 * the required buf. On a NULL buf, we send a page of data to the server
4633 * guessing that the ACL request can be serviced by a page. If so, we cache
4634 * up to the page of ACL data, and the 2nd call to getxattr is serviced by
4635 * the cache. If not so, we throw away the page, and cache the required
4636 * length. The next getxattr call will then produce another round trip to
4637 * the server, this time with the input buf of the required size.
4639 static ssize_t
__nfs4_get_acl_uncached(struct inode
*inode
, void *buf
, size_t buflen
)
4641 struct page
*pages
[NFS4ACL_MAXPAGES
] = {NULL
, };
4642 struct nfs_getaclargs args
= {
4643 .fh
= NFS_FH(inode
),
4647 struct nfs_getaclres res
= {
4650 struct rpc_message msg
= {
4651 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETACL
],
4655 unsigned int npages
= DIV_ROUND_UP(buflen
, PAGE_SIZE
);
4656 int ret
= -ENOMEM
, i
;
4658 /* As long as we're doing a round trip to the server anyway,
4659 * let's be prepared for a page of acl data. */
4662 if (npages
> ARRAY_SIZE(pages
))
4665 for (i
= 0; i
< npages
; i
++) {
4666 pages
[i
] = alloc_page(GFP_KERNEL
);
4671 /* for decoding across pages */
4672 res
.acl_scratch
= alloc_page(GFP_KERNEL
);
4673 if (!res
.acl_scratch
)
4676 args
.acl_len
= npages
* PAGE_SIZE
;
4677 args
.acl_pgbase
= 0;
4679 dprintk("%s buf %p buflen %zu npages %d args.acl_len %zu\n",
4680 __func__
, buf
, buflen
, npages
, args
.acl_len
);
4681 ret
= nfs4_call_sync(NFS_SERVER(inode
)->client
, NFS_SERVER(inode
),
4682 &msg
, &args
.seq_args
, &res
.seq_res
, 0);
4686 /* Handle the case where the passed-in buffer is too short */
4687 if (res
.acl_flags
& NFS4_ACL_TRUNC
) {
4688 /* Did the user only issue a request for the acl length? */
4694 nfs4_write_cached_acl(inode
, pages
, res
.acl_data_offset
, res
.acl_len
);
4696 if (res
.acl_len
> buflen
) {
4700 _copy_from_pages(buf
, pages
, res
.acl_data_offset
, res
.acl_len
);
4705 for (i
= 0; i
< npages
; i
++)
4707 __free_page(pages
[i
]);
4708 if (res
.acl_scratch
)
4709 __free_page(res
.acl_scratch
);
4713 static ssize_t
nfs4_get_acl_uncached(struct inode
*inode
, void *buf
, size_t buflen
)
4715 struct nfs4_exception exception
= { };
4718 ret
= __nfs4_get_acl_uncached(inode
, buf
, buflen
);
4719 trace_nfs4_get_acl(inode
, ret
);
4722 ret
= nfs4_handle_exception(NFS_SERVER(inode
), ret
, &exception
);
4723 } while (exception
.retry
);
4727 static ssize_t
nfs4_proc_get_acl(struct inode
*inode
, void *buf
, size_t buflen
)
4729 struct nfs_server
*server
= NFS_SERVER(inode
);
4732 if (!nfs4_server_supports_acls(server
))
4734 ret
= nfs_revalidate_inode(server
, inode
);
4737 if (NFS_I(inode
)->cache_validity
& NFS_INO_INVALID_ACL
)
4738 nfs_zap_acl_cache(inode
);
4739 ret
= nfs4_read_cached_acl(inode
, buf
, buflen
);
4741 /* -ENOENT is returned if there is no ACL or if there is an ACL
4742 * but no cached acl data, just the acl length */
4744 return nfs4_get_acl_uncached(inode
, buf
, buflen
);
4747 static int __nfs4_proc_set_acl(struct inode
*inode
, const void *buf
, size_t buflen
)
4749 struct nfs_server
*server
= NFS_SERVER(inode
);
4750 struct page
*pages
[NFS4ACL_MAXPAGES
];
4751 struct nfs_setaclargs arg
= {
4752 .fh
= NFS_FH(inode
),
4756 struct nfs_setaclres res
;
4757 struct rpc_message msg
= {
4758 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETACL
],
4762 unsigned int npages
= DIV_ROUND_UP(buflen
, PAGE_SIZE
);
4765 if (!nfs4_server_supports_acls(server
))
4767 if (npages
> ARRAY_SIZE(pages
))
4769 i
= buf_to_pages_noslab(buf
, buflen
, arg
.acl_pages
, &arg
.acl_pgbase
);
4772 nfs4_inode_return_delegation(inode
);
4773 ret
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
4776 * Free each page after tx, so the only ref left is
4777 * held by the network stack
4780 put_page(pages
[i
-1]);
4783 * Acl update can result in inode attribute update.
4784 * so mark the attribute cache invalid.
4786 spin_lock(&inode
->i_lock
);
4787 NFS_I(inode
)->cache_validity
|= NFS_INO_INVALID_ATTR
;
4788 spin_unlock(&inode
->i_lock
);
4789 nfs_access_zap_cache(inode
);
4790 nfs_zap_acl_cache(inode
);
4794 static int nfs4_proc_set_acl(struct inode
*inode
, const void *buf
, size_t buflen
)
4796 struct nfs4_exception exception
= { };
4799 err
= __nfs4_proc_set_acl(inode
, buf
, buflen
);
4800 trace_nfs4_set_acl(inode
, err
);
4801 err
= nfs4_handle_exception(NFS_SERVER(inode
), err
,
4803 } while (exception
.retry
);
4807 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
4808 static int _nfs4_get_security_label(struct inode
*inode
, void *buf
,
4811 struct nfs_server
*server
= NFS_SERVER(inode
);
4812 struct nfs_fattr fattr
;
4813 struct nfs4_label label
= {0, 0, buflen
, buf
};
4815 u32 bitmask
[3] = { 0, 0, FATTR4_WORD2_SECURITY_LABEL
};
4816 struct nfs4_getattr_arg arg
= {
4817 .fh
= NFS_FH(inode
),
4820 struct nfs4_getattr_res res
= {
4825 struct rpc_message msg
= {
4826 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETATTR
],
4832 nfs_fattr_init(&fattr
);
4834 ret
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 0);
4837 if (!(fattr
.valid
& NFS_ATTR_FATTR_V4_SECURITY_LABEL
))
4839 if (buflen
< label
.len
)
4844 static int nfs4_get_security_label(struct inode
*inode
, void *buf
,
4847 struct nfs4_exception exception
= { };
4850 if (!nfs_server_capable(inode
, NFS_CAP_SECURITY_LABEL
))
4854 err
= _nfs4_get_security_label(inode
, buf
, buflen
);
4855 trace_nfs4_get_security_label(inode
, err
);
4856 err
= nfs4_handle_exception(NFS_SERVER(inode
), err
,
4858 } while (exception
.retry
);
4862 static int _nfs4_do_set_security_label(struct inode
*inode
,
4863 struct nfs4_label
*ilabel
,
4864 struct nfs_fattr
*fattr
,
4865 struct nfs4_label
*olabel
)
4868 struct iattr sattr
= {0};
4869 struct nfs_server
*server
= NFS_SERVER(inode
);
4870 const u32 bitmask
[3] = { 0, 0, FATTR4_WORD2_SECURITY_LABEL
};
4871 struct nfs_setattrargs arg
= {
4872 .fh
= NFS_FH(inode
),
4878 struct nfs_setattrres res
= {
4883 struct rpc_message msg
= {
4884 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETATTR
],
4890 nfs4_stateid_copy(&arg
.stateid
, &zero_stateid
);
4892 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
4894 dprintk("%s failed: %d\n", __func__
, status
);
4899 static int nfs4_do_set_security_label(struct inode
*inode
,
4900 struct nfs4_label
*ilabel
,
4901 struct nfs_fattr
*fattr
,
4902 struct nfs4_label
*olabel
)
4904 struct nfs4_exception exception
= { };
4908 err
= _nfs4_do_set_security_label(inode
, ilabel
,
4910 trace_nfs4_set_security_label(inode
, err
);
4911 err
= nfs4_handle_exception(NFS_SERVER(inode
), err
,
4913 } while (exception
.retry
);
4918 nfs4_set_security_label(struct dentry
*dentry
, const void *buf
, size_t buflen
)
4920 struct nfs4_label ilabel
, *olabel
= NULL
;
4921 struct nfs_fattr fattr
;
4922 struct rpc_cred
*cred
;
4923 struct inode
*inode
= d_inode(dentry
);
4926 if (!nfs_server_capable(inode
, NFS_CAP_SECURITY_LABEL
))
4929 nfs_fattr_init(&fattr
);
4933 ilabel
.label
= (char *)buf
;
4934 ilabel
.len
= buflen
;
4936 cred
= rpc_lookup_cred();
4938 return PTR_ERR(cred
);
4940 olabel
= nfs4_label_alloc(NFS_SERVER(inode
), GFP_KERNEL
);
4941 if (IS_ERR(olabel
)) {
4942 status
= -PTR_ERR(olabel
);
4946 status
= nfs4_do_set_security_label(inode
, &ilabel
, &fattr
, olabel
);
4948 nfs_setsecurity(inode
, &fattr
, olabel
);
4950 nfs4_label_free(olabel
);
4955 #endif /* CONFIG_NFS_V4_SECURITY_LABEL */
4959 nfs4_async_handle_error(struct rpc_task
*task
, const struct nfs_server
*server
,
4960 struct nfs4_state
*state
, long *timeout
)
4962 struct nfs_client
*clp
= server
->nfs_client
;
4964 if (task
->tk_status
>= 0)
4966 switch(task
->tk_status
) {
4967 case -NFS4ERR_DELEG_REVOKED
:
4968 case -NFS4ERR_ADMIN_REVOKED
:
4969 case -NFS4ERR_BAD_STATEID
:
4970 case -NFS4ERR_OPENMODE
:
4973 if (nfs4_schedule_stateid_recovery(server
, state
) < 0)
4974 goto recovery_failed
;
4975 goto wait_on_recovery
;
4976 case -NFS4ERR_EXPIRED
:
4977 if (state
!= NULL
) {
4978 if (nfs4_schedule_stateid_recovery(server
, state
) < 0)
4979 goto recovery_failed
;
4981 case -NFS4ERR_STALE_STATEID
:
4982 case -NFS4ERR_STALE_CLIENTID
:
4983 nfs4_schedule_lease_recovery(clp
);
4984 goto wait_on_recovery
;
4985 case -NFS4ERR_MOVED
:
4986 if (nfs4_schedule_migration_recovery(server
) < 0)
4987 goto recovery_failed
;
4988 goto wait_on_recovery
;
4989 case -NFS4ERR_LEASE_MOVED
:
4990 nfs4_schedule_lease_moved_recovery(clp
);
4991 goto wait_on_recovery
;
4992 #if defined(CONFIG_NFS_V4_1)
4993 case -NFS4ERR_BADSESSION
:
4994 case -NFS4ERR_BADSLOT
:
4995 case -NFS4ERR_BAD_HIGH_SLOT
:
4996 case -NFS4ERR_DEADSESSION
:
4997 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
4998 case -NFS4ERR_SEQ_FALSE_RETRY
:
4999 case -NFS4ERR_SEQ_MISORDERED
:
5000 dprintk("%s ERROR %d, Reset session\n", __func__
,
5002 nfs4_schedule_session_recovery(clp
->cl_session
, task
->tk_status
);
5003 goto wait_on_recovery
;
5004 #endif /* CONFIG_NFS_V4_1 */
5005 case -NFS4ERR_DELAY
:
5006 nfs_inc_server_stats(server
, NFSIOS_DELAY
);
5007 rpc_delay(task
, nfs4_update_delay(timeout
));
5009 case -NFS4ERR_GRACE
:
5010 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
5011 case -NFS4ERR_RETRY_UNCACHED_REP
:
5012 case -NFS4ERR_OLD_STATEID
:
5015 task
->tk_status
= nfs4_map_errors(task
->tk_status
);
5018 task
->tk_status
= -EIO
;
5021 rpc_sleep_on(&clp
->cl_rpcwaitq
, task
, NULL
);
5022 if (test_bit(NFS4CLNT_MANAGER_RUNNING
, &clp
->cl_state
) == 0)
5023 rpc_wake_up_queued_task(&clp
->cl_rpcwaitq
, task
);
5024 if (test_bit(NFS_MIG_FAILED
, &server
->mig_status
))
5025 goto recovery_failed
;
5027 task
->tk_status
= 0;
5031 static void nfs4_init_boot_verifier(const struct nfs_client
*clp
,
5032 nfs4_verifier
*bootverf
)
5036 if (test_bit(NFS4CLNT_PURGE_STATE
, &clp
->cl_state
)) {
5037 /* An impossible timestamp guarantees this value
5038 * will never match a generated boot time. */
5040 verf
[1] = cpu_to_be32(NSEC_PER_SEC
+ 1);
5042 struct nfs_net
*nn
= net_generic(clp
->cl_net
, nfs_net_id
);
5043 verf
[0] = cpu_to_be32(nn
->boot_time
.tv_sec
);
5044 verf
[1] = cpu_to_be32(nn
->boot_time
.tv_nsec
);
5046 memcpy(bootverf
->data
, verf
, sizeof(bootverf
->data
));
5050 nfs4_init_nonuniform_client_string(struct nfs_client
*clp
)
5056 if (clp
->cl_owner_id
!= NULL
)
5060 len
= 14 + strlen(clp
->cl_ipaddr
) + 1 +
5061 strlen(rpc_peeraddr2str(clp
->cl_rpcclient
, RPC_DISPLAY_ADDR
)) +
5063 strlen(rpc_peeraddr2str(clp
->cl_rpcclient
, RPC_DISPLAY_PROTO
)) +
5067 if (len
> NFS4_OPAQUE_LIMIT
+ 1)
5071 * Since this string is allocated at mount time, and held until the
5072 * nfs_client is destroyed, we can use GFP_KERNEL here w/o worrying
5073 * about a memory-reclaim deadlock.
5075 str
= kmalloc(len
, GFP_KERNEL
);
5080 result
= scnprintf(str
, len
, "Linux NFSv4.0 %s/%s %s",
5082 rpc_peeraddr2str(clp
->cl_rpcclient
, RPC_DISPLAY_ADDR
),
5083 rpc_peeraddr2str(clp
->cl_rpcclient
, RPC_DISPLAY_PROTO
));
5086 clp
->cl_owner_id
= str
;
5091 nfs4_init_uniquifier_client_string(struct nfs_client
*clp
)
5097 len
= 10 + 10 + 1 + 10 + 1 +
5098 strlen(nfs4_client_id_uniquifier
) + 1 +
5099 strlen(clp
->cl_rpcclient
->cl_nodename
) + 1;
5101 if (len
> NFS4_OPAQUE_LIMIT
+ 1)
5105 * Since this string is allocated at mount time, and held until the
5106 * nfs_client is destroyed, we can use GFP_KERNEL here w/o worrying
5107 * about a memory-reclaim deadlock.
5109 str
= kmalloc(len
, GFP_KERNEL
);
5113 result
= scnprintf(str
, len
, "Linux NFSv%u.%u %s/%s",
5114 clp
->rpc_ops
->version
, clp
->cl_minorversion
,
5115 nfs4_client_id_uniquifier
,
5116 clp
->cl_rpcclient
->cl_nodename
);
5117 clp
->cl_owner_id
= str
;
5122 nfs4_init_uniform_client_string(struct nfs_client
*clp
)
5128 if (clp
->cl_owner_id
!= NULL
)
5131 if (nfs4_client_id_uniquifier
[0] != '\0')
5132 return nfs4_init_uniquifier_client_string(clp
);
5134 len
= 10 + 10 + 1 + 10 + 1 +
5135 strlen(clp
->cl_rpcclient
->cl_nodename
) + 1;
5137 if (len
> NFS4_OPAQUE_LIMIT
+ 1)
5141 * Since this string is allocated at mount time, and held until the
5142 * nfs_client is destroyed, we can use GFP_KERNEL here w/o worrying
5143 * about a memory-reclaim deadlock.
5145 str
= kmalloc(len
, GFP_KERNEL
);
5149 result
= scnprintf(str
, len
, "Linux NFSv%u.%u %s",
5150 clp
->rpc_ops
->version
, clp
->cl_minorversion
,
5151 clp
->cl_rpcclient
->cl_nodename
);
5152 clp
->cl_owner_id
= str
;
5157 * nfs4_callback_up_net() starts only "tcp" and "tcp6" callback
5158 * services. Advertise one based on the address family of the
5162 nfs4_init_callback_netid(const struct nfs_client
*clp
, char *buf
, size_t len
)
5164 if (strchr(clp
->cl_ipaddr
, ':') != NULL
)
5165 return scnprintf(buf
, len
, "tcp6");
5167 return scnprintf(buf
, len
, "tcp");
5170 static void nfs4_setclientid_done(struct rpc_task
*task
, void *calldata
)
5172 struct nfs4_setclientid
*sc
= calldata
;
5174 if (task
->tk_status
== 0)
5175 sc
->sc_cred
= get_rpccred(task
->tk_rqstp
->rq_cred
);
5178 static const struct rpc_call_ops nfs4_setclientid_ops
= {
5179 .rpc_call_done
= nfs4_setclientid_done
,
5183 * nfs4_proc_setclientid - Negotiate client ID
5184 * @clp: state data structure
5185 * @program: RPC program for NFSv4 callback service
5186 * @port: IP port number for NFS4 callback service
5187 * @cred: RPC credential to use for this call
5188 * @res: where to place the result
5190 * Returns zero, a negative errno, or a negative NFS4ERR status code.
5192 int nfs4_proc_setclientid(struct nfs_client
*clp
, u32 program
,
5193 unsigned short port
, struct rpc_cred
*cred
,
5194 struct nfs4_setclientid_res
*res
)
5196 nfs4_verifier sc_verifier
;
5197 struct nfs4_setclientid setclientid
= {
5198 .sc_verifier
= &sc_verifier
,
5202 struct rpc_message msg
= {
5203 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETCLIENTID
],
5204 .rpc_argp
= &setclientid
,
5208 struct rpc_task
*task
;
5209 struct rpc_task_setup task_setup_data
= {
5210 .rpc_client
= clp
->cl_rpcclient
,
5211 .rpc_message
= &msg
,
5212 .callback_ops
= &nfs4_setclientid_ops
,
5213 .callback_data
= &setclientid
,
5214 .flags
= RPC_TASK_TIMEOUT
,
5218 /* nfs_client_id4 */
5219 nfs4_init_boot_verifier(clp
, &sc_verifier
);
5221 if (test_bit(NFS_CS_MIGRATION
, &clp
->cl_flags
))
5222 status
= nfs4_init_uniform_client_string(clp
);
5224 status
= nfs4_init_nonuniform_client_string(clp
);
5230 setclientid
.sc_netid_len
=
5231 nfs4_init_callback_netid(clp
,
5232 setclientid
.sc_netid
,
5233 sizeof(setclientid
.sc_netid
));
5234 setclientid
.sc_uaddr_len
= scnprintf(setclientid
.sc_uaddr
,
5235 sizeof(setclientid
.sc_uaddr
), "%s.%u.%u",
5236 clp
->cl_ipaddr
, port
>> 8, port
& 255);
5238 dprintk("NFS call setclientid auth=%s, '%s'\n",
5239 clp
->cl_rpcclient
->cl_auth
->au_ops
->au_name
,
5241 task
= rpc_run_task(&task_setup_data
);
5243 status
= PTR_ERR(task
);
5246 status
= task
->tk_status
;
5247 if (setclientid
.sc_cred
) {
5248 clp
->cl_acceptor
= rpcauth_stringify_acceptor(setclientid
.sc_cred
);
5249 put_rpccred(setclientid
.sc_cred
);
5253 trace_nfs4_setclientid(clp
, status
);
5254 dprintk("NFS reply setclientid: %d\n", status
);
5259 * nfs4_proc_setclientid_confirm - Confirm client ID
5260 * @clp: state data structure
5261 * @res: result of a previous SETCLIENTID
5262 * @cred: RPC credential to use for this call
5264 * Returns zero, a negative errno, or a negative NFS4ERR status code.
5266 int nfs4_proc_setclientid_confirm(struct nfs_client
*clp
,
5267 struct nfs4_setclientid_res
*arg
,
5268 struct rpc_cred
*cred
)
5270 struct rpc_message msg
= {
5271 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETCLIENTID_CONFIRM
],
5277 dprintk("NFS call setclientid_confirm auth=%s, (client ID %llx)\n",
5278 clp
->cl_rpcclient
->cl_auth
->au_ops
->au_name
,
5280 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
5281 trace_nfs4_setclientid_confirm(clp
, status
);
5282 dprintk("NFS reply setclientid_confirm: %d\n", status
);
5286 struct nfs4_delegreturndata
{
5287 struct nfs4_delegreturnargs args
;
5288 struct nfs4_delegreturnres res
;
5290 nfs4_stateid stateid
;
5291 unsigned long timestamp
;
5292 struct nfs_fattr fattr
;
5294 struct inode
*inode
;
5299 static void nfs4_delegreturn_done(struct rpc_task
*task
, void *calldata
)
5301 struct nfs4_delegreturndata
*data
= calldata
;
5303 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
5306 trace_nfs4_delegreturn_exit(&data
->args
, &data
->res
, task
->tk_status
);
5307 switch (task
->tk_status
) {
5309 renew_lease(data
->res
.server
, data
->timestamp
);
5310 case -NFS4ERR_ADMIN_REVOKED
:
5311 case -NFS4ERR_DELEG_REVOKED
:
5312 case -NFS4ERR_BAD_STATEID
:
5313 case -NFS4ERR_OLD_STATEID
:
5314 case -NFS4ERR_STALE_STATEID
:
5315 case -NFS4ERR_EXPIRED
:
5316 task
->tk_status
= 0;
5318 pnfs_roc_set_barrier(data
->inode
, data
->roc_barrier
);
5321 if (nfs4_async_handle_error(task
, data
->res
.server
,
5322 NULL
, NULL
) == -EAGAIN
) {
5323 rpc_restart_call_prepare(task
);
5327 data
->rpc_status
= task
->tk_status
;
5330 static void nfs4_delegreturn_release(void *calldata
)
5332 struct nfs4_delegreturndata
*data
= calldata
;
5333 struct inode
*inode
= data
->inode
;
5337 pnfs_roc_release(inode
);
5338 nfs_iput_and_deactive(inode
);
5343 static void nfs4_delegreturn_prepare(struct rpc_task
*task
, void *data
)
5345 struct nfs4_delegreturndata
*d_data
;
5347 d_data
= (struct nfs4_delegreturndata
*)data
;
5349 if (nfs4_wait_on_layoutreturn(d_data
->inode
, task
))
5353 pnfs_roc_get_barrier(d_data
->inode
, &d_data
->roc_barrier
);
5355 nfs4_setup_sequence(d_data
->res
.server
,
5356 &d_data
->args
.seq_args
,
5357 &d_data
->res
.seq_res
,
5361 static const struct rpc_call_ops nfs4_delegreturn_ops
= {
5362 .rpc_call_prepare
= nfs4_delegreturn_prepare
,
5363 .rpc_call_done
= nfs4_delegreturn_done
,
5364 .rpc_release
= nfs4_delegreturn_release
,
5367 static int _nfs4_proc_delegreturn(struct inode
*inode
, struct rpc_cred
*cred
, const nfs4_stateid
*stateid
, int issync
)
5369 struct nfs4_delegreturndata
*data
;
5370 struct nfs_server
*server
= NFS_SERVER(inode
);
5371 struct rpc_task
*task
;
5372 struct rpc_message msg
= {
5373 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DELEGRETURN
],
5376 struct rpc_task_setup task_setup_data
= {
5377 .rpc_client
= server
->client
,
5378 .rpc_message
= &msg
,
5379 .callback_ops
= &nfs4_delegreturn_ops
,
5380 .flags
= RPC_TASK_ASYNC
,
5384 data
= kzalloc(sizeof(*data
), GFP_NOFS
);
5387 nfs4_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
5388 data
->args
.fhandle
= &data
->fh
;
5389 data
->args
.stateid
= &data
->stateid
;
5390 data
->args
.bitmask
= server
->cache_consistency_bitmask
;
5391 nfs_copy_fh(&data
->fh
, NFS_FH(inode
));
5392 nfs4_stateid_copy(&data
->stateid
, stateid
);
5393 data
->res
.fattr
= &data
->fattr
;
5394 data
->res
.server
= server
;
5395 nfs_fattr_init(data
->res
.fattr
);
5396 data
->timestamp
= jiffies
;
5397 data
->rpc_status
= 0;
5398 data
->inode
= nfs_igrab_and_active(inode
);
5400 data
->roc
= nfs4_roc(inode
);
5402 task_setup_data
.callback_data
= data
;
5403 msg
.rpc_argp
= &data
->args
;
5404 msg
.rpc_resp
= &data
->res
;
5405 task
= rpc_run_task(&task_setup_data
);
5407 return PTR_ERR(task
);
5410 status
= nfs4_wait_for_completion_rpc_task(task
);
5413 status
= data
->rpc_status
;
5415 nfs_post_op_update_inode_force_wcc(inode
, &data
->fattr
);
5417 nfs_refresh_inode(inode
, &data
->fattr
);
5423 int nfs4_proc_delegreturn(struct inode
*inode
, struct rpc_cred
*cred
, const nfs4_stateid
*stateid
, int issync
)
5425 struct nfs_server
*server
= NFS_SERVER(inode
);
5426 struct nfs4_exception exception
= { };
5429 err
= _nfs4_proc_delegreturn(inode
, cred
, stateid
, issync
);
5430 trace_nfs4_delegreturn(inode
, err
);
5432 case -NFS4ERR_STALE_STATEID
:
5433 case -NFS4ERR_EXPIRED
:
5437 err
= nfs4_handle_exception(server
, err
, &exception
);
5438 } while (exception
.retry
);
5442 #define NFS4_LOCK_MINTIMEOUT (1 * HZ)
5443 #define NFS4_LOCK_MAXTIMEOUT (30 * HZ)
5446 * sleep, with exponential backoff, and retry the LOCK operation.
5448 static unsigned long
5449 nfs4_set_lock_task_retry(unsigned long timeout
)
5451 freezable_schedule_timeout_killable_unsafe(timeout
);
5453 if (timeout
> NFS4_LOCK_MAXTIMEOUT
)
5454 return NFS4_LOCK_MAXTIMEOUT
;
5458 static int _nfs4_proc_getlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
5460 struct inode
*inode
= state
->inode
;
5461 struct nfs_server
*server
= NFS_SERVER(inode
);
5462 struct nfs_client
*clp
= server
->nfs_client
;
5463 struct nfs_lockt_args arg
= {
5464 .fh
= NFS_FH(inode
),
5467 struct nfs_lockt_res res
= {
5470 struct rpc_message msg
= {
5471 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCKT
],
5474 .rpc_cred
= state
->owner
->so_cred
,
5476 struct nfs4_lock_state
*lsp
;
5479 arg
.lock_owner
.clientid
= clp
->cl_clientid
;
5480 status
= nfs4_set_lock_state(state
, request
);
5483 lsp
= request
->fl_u
.nfs4_fl
.owner
;
5484 arg
.lock_owner
.id
= lsp
->ls_seqid
.owner_id
;
5485 arg
.lock_owner
.s_dev
= server
->s_dev
;
5486 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
5489 request
->fl_type
= F_UNLCK
;
5491 case -NFS4ERR_DENIED
:
5494 request
->fl_ops
->fl_release_private(request
);
5495 request
->fl_ops
= NULL
;
5500 static int nfs4_proc_getlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
5502 struct nfs4_exception exception
= { };
5506 err
= _nfs4_proc_getlk(state
, cmd
, request
);
5507 trace_nfs4_get_lock(request
, state
, cmd
, err
);
5508 err
= nfs4_handle_exception(NFS_SERVER(state
->inode
), err
,
5510 } while (exception
.retry
);
5514 static int do_vfs_lock(struct inode
*inode
, struct file_lock
*fl
)
5516 return locks_lock_inode_wait(inode
, fl
);
5519 struct nfs4_unlockdata
{
5520 struct nfs_locku_args arg
;
5521 struct nfs_locku_res res
;
5522 struct nfs4_lock_state
*lsp
;
5523 struct nfs_open_context
*ctx
;
5524 struct file_lock fl
;
5525 const struct nfs_server
*server
;
5526 unsigned long timestamp
;
5529 static struct nfs4_unlockdata
*nfs4_alloc_unlockdata(struct file_lock
*fl
,
5530 struct nfs_open_context
*ctx
,
5531 struct nfs4_lock_state
*lsp
,
5532 struct nfs_seqid
*seqid
)
5534 struct nfs4_unlockdata
*p
;
5535 struct inode
*inode
= lsp
->ls_state
->inode
;
5537 p
= kzalloc(sizeof(*p
), GFP_NOFS
);
5540 p
->arg
.fh
= NFS_FH(inode
);
5542 p
->arg
.seqid
= seqid
;
5543 p
->res
.seqid
= seqid
;
5545 atomic_inc(&lsp
->ls_count
);
5546 /* Ensure we don't close file until we're done freeing locks! */
5547 p
->ctx
= get_nfs_open_context(ctx
);
5548 memcpy(&p
->fl
, fl
, sizeof(p
->fl
));
5549 p
->server
= NFS_SERVER(inode
);
5553 static void nfs4_locku_release_calldata(void *data
)
5555 struct nfs4_unlockdata
*calldata
= data
;
5556 nfs_free_seqid(calldata
->arg
.seqid
);
5557 nfs4_put_lock_state(calldata
->lsp
);
5558 put_nfs_open_context(calldata
->ctx
);
5562 static void nfs4_locku_done(struct rpc_task
*task
, void *data
)
5564 struct nfs4_unlockdata
*calldata
= data
;
5566 if (!nfs4_sequence_done(task
, &calldata
->res
.seq_res
))
5568 switch (task
->tk_status
) {
5570 renew_lease(calldata
->server
, calldata
->timestamp
);
5571 do_vfs_lock(calldata
->lsp
->ls_state
->inode
, &calldata
->fl
);
5572 if (nfs4_update_lock_stateid(calldata
->lsp
,
5573 &calldata
->res
.stateid
))
5575 case -NFS4ERR_BAD_STATEID
:
5576 case -NFS4ERR_OLD_STATEID
:
5577 case -NFS4ERR_STALE_STATEID
:
5578 case -NFS4ERR_EXPIRED
:
5579 if (!nfs4_stateid_match(&calldata
->arg
.stateid
,
5580 &calldata
->lsp
->ls_stateid
))
5581 rpc_restart_call_prepare(task
);
5584 if (nfs4_async_handle_error(task
, calldata
->server
,
5585 NULL
, NULL
) == -EAGAIN
)
5586 rpc_restart_call_prepare(task
);
5588 nfs_release_seqid(calldata
->arg
.seqid
);
5591 static void nfs4_locku_prepare(struct rpc_task
*task
, void *data
)
5593 struct nfs4_unlockdata
*calldata
= data
;
5595 if (nfs_wait_on_sequence(calldata
->arg
.seqid
, task
) != 0)
5597 nfs4_stateid_copy(&calldata
->arg
.stateid
, &calldata
->lsp
->ls_stateid
);
5598 if (test_bit(NFS_LOCK_INITIALIZED
, &calldata
->lsp
->ls_flags
) == 0) {
5599 /* Note: exit _without_ running nfs4_locku_done */
5602 calldata
->timestamp
= jiffies
;
5603 if (nfs4_setup_sequence(calldata
->server
,
5604 &calldata
->arg
.seq_args
,
5605 &calldata
->res
.seq_res
,
5607 nfs_release_seqid(calldata
->arg
.seqid
);
5610 task
->tk_action
= NULL
;
5612 nfs4_sequence_done(task
, &calldata
->res
.seq_res
);
5615 static const struct rpc_call_ops nfs4_locku_ops
= {
5616 .rpc_call_prepare
= nfs4_locku_prepare
,
5617 .rpc_call_done
= nfs4_locku_done
,
5618 .rpc_release
= nfs4_locku_release_calldata
,
5621 static struct rpc_task
*nfs4_do_unlck(struct file_lock
*fl
,
5622 struct nfs_open_context
*ctx
,
5623 struct nfs4_lock_state
*lsp
,
5624 struct nfs_seqid
*seqid
)
5626 struct nfs4_unlockdata
*data
;
5627 struct rpc_message msg
= {
5628 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCKU
],
5629 .rpc_cred
= ctx
->cred
,
5631 struct rpc_task_setup task_setup_data
= {
5632 .rpc_client
= NFS_CLIENT(lsp
->ls_state
->inode
),
5633 .rpc_message
= &msg
,
5634 .callback_ops
= &nfs4_locku_ops
,
5635 .workqueue
= nfsiod_workqueue
,
5636 .flags
= RPC_TASK_ASYNC
,
5639 nfs4_state_protect(NFS_SERVER(lsp
->ls_state
->inode
)->nfs_client
,
5640 NFS_SP4_MACH_CRED_CLEANUP
, &task_setup_data
.rpc_client
, &msg
);
5642 /* Ensure this is an unlock - when canceling a lock, the
5643 * canceled lock is passed in, and it won't be an unlock.
5645 fl
->fl_type
= F_UNLCK
;
5647 data
= nfs4_alloc_unlockdata(fl
, ctx
, lsp
, seqid
);
5649 nfs_free_seqid(seqid
);
5650 return ERR_PTR(-ENOMEM
);
5653 nfs4_init_sequence(&data
->arg
.seq_args
, &data
->res
.seq_res
, 1);
5654 msg
.rpc_argp
= &data
->arg
;
5655 msg
.rpc_resp
= &data
->res
;
5656 task_setup_data
.callback_data
= data
;
5657 return rpc_run_task(&task_setup_data
);
5660 static int nfs4_proc_unlck(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
5662 struct inode
*inode
= state
->inode
;
5663 struct nfs4_state_owner
*sp
= state
->owner
;
5664 struct nfs_inode
*nfsi
= NFS_I(inode
);
5665 struct nfs_seqid
*seqid
;
5666 struct nfs4_lock_state
*lsp
;
5667 struct rpc_task
*task
;
5668 struct nfs_seqid
*(*alloc_seqid
)(struct nfs_seqid_counter
*, gfp_t
);
5670 unsigned char fl_flags
= request
->fl_flags
;
5672 status
= nfs4_set_lock_state(state
, request
);
5673 /* Unlock _before_ we do the RPC call */
5674 request
->fl_flags
|= FL_EXISTS
;
5675 /* Exclude nfs_delegation_claim_locks() */
5676 mutex_lock(&sp
->so_delegreturn_mutex
);
5677 /* Exclude nfs4_reclaim_open_stateid() - note nesting! */
5678 down_read(&nfsi
->rwsem
);
5679 if (do_vfs_lock(inode
, request
) == -ENOENT
) {
5680 up_read(&nfsi
->rwsem
);
5681 mutex_unlock(&sp
->so_delegreturn_mutex
);
5684 up_read(&nfsi
->rwsem
);
5685 mutex_unlock(&sp
->so_delegreturn_mutex
);
5688 /* Is this a delegated lock? */
5689 lsp
= request
->fl_u
.nfs4_fl
.owner
;
5690 if (test_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
) == 0)
5692 alloc_seqid
= NFS_SERVER(inode
)->nfs_client
->cl_mvops
->alloc_seqid
;
5693 seqid
= alloc_seqid(&lsp
->ls_seqid
, GFP_KERNEL
);
5697 task
= nfs4_do_unlck(request
, nfs_file_open_context(request
->fl_file
), lsp
, seqid
);
5698 status
= PTR_ERR(task
);
5701 status
= nfs4_wait_for_completion_rpc_task(task
);
5704 request
->fl_flags
= fl_flags
;
5705 trace_nfs4_unlock(request
, state
, F_SETLK
, status
);
5709 struct nfs4_lockdata
{
5710 struct nfs_lock_args arg
;
5711 struct nfs_lock_res res
;
5712 struct nfs4_lock_state
*lsp
;
5713 struct nfs_open_context
*ctx
;
5714 struct file_lock fl
;
5715 unsigned long timestamp
;
5718 struct nfs_server
*server
;
5721 static struct nfs4_lockdata
*nfs4_alloc_lockdata(struct file_lock
*fl
,
5722 struct nfs_open_context
*ctx
, struct nfs4_lock_state
*lsp
,
5725 struct nfs4_lockdata
*p
;
5726 struct inode
*inode
= lsp
->ls_state
->inode
;
5727 struct nfs_server
*server
= NFS_SERVER(inode
);
5728 struct nfs_seqid
*(*alloc_seqid
)(struct nfs_seqid_counter
*, gfp_t
);
5730 p
= kzalloc(sizeof(*p
), gfp_mask
);
5734 p
->arg
.fh
= NFS_FH(inode
);
5736 p
->arg
.open_seqid
= nfs_alloc_seqid(&lsp
->ls_state
->owner
->so_seqid
, gfp_mask
);
5737 if (IS_ERR(p
->arg
.open_seqid
))
5739 alloc_seqid
= server
->nfs_client
->cl_mvops
->alloc_seqid
;
5740 p
->arg
.lock_seqid
= alloc_seqid(&lsp
->ls_seqid
, gfp_mask
);
5741 if (IS_ERR(p
->arg
.lock_seqid
))
5742 goto out_free_seqid
;
5743 p
->arg
.lock_owner
.clientid
= server
->nfs_client
->cl_clientid
;
5744 p
->arg
.lock_owner
.id
= lsp
->ls_seqid
.owner_id
;
5745 p
->arg
.lock_owner
.s_dev
= server
->s_dev
;
5746 p
->res
.lock_seqid
= p
->arg
.lock_seqid
;
5749 atomic_inc(&lsp
->ls_count
);
5750 p
->ctx
= get_nfs_open_context(ctx
);
5751 get_file(fl
->fl_file
);
5752 memcpy(&p
->fl
, fl
, sizeof(p
->fl
));
5755 nfs_free_seqid(p
->arg
.open_seqid
);
5761 static void nfs4_lock_prepare(struct rpc_task
*task
, void *calldata
)
5763 struct nfs4_lockdata
*data
= calldata
;
5764 struct nfs4_state
*state
= data
->lsp
->ls_state
;
5766 dprintk("%s: begin!\n", __func__
);
5767 if (nfs_wait_on_sequence(data
->arg
.lock_seqid
, task
) != 0)
5769 /* Do we need to do an open_to_lock_owner? */
5770 if (!test_bit(NFS_LOCK_INITIALIZED
, &data
->lsp
->ls_flags
)) {
5771 if (nfs_wait_on_sequence(data
->arg
.open_seqid
, task
) != 0) {
5772 goto out_release_lock_seqid
;
5774 nfs4_stateid_copy(&data
->arg
.open_stateid
,
5775 &state
->open_stateid
);
5776 data
->arg
.new_lock_owner
= 1;
5777 data
->res
.open_seqid
= data
->arg
.open_seqid
;
5779 data
->arg
.new_lock_owner
= 0;
5780 nfs4_stateid_copy(&data
->arg
.lock_stateid
,
5781 &data
->lsp
->ls_stateid
);
5783 if (!nfs4_valid_open_stateid(state
)) {
5784 data
->rpc_status
= -EBADF
;
5785 task
->tk_action
= NULL
;
5786 goto out_release_open_seqid
;
5788 data
->timestamp
= jiffies
;
5789 if (nfs4_setup_sequence(data
->server
,
5790 &data
->arg
.seq_args
,
5794 out_release_open_seqid
:
5795 nfs_release_seqid(data
->arg
.open_seqid
);
5796 out_release_lock_seqid
:
5797 nfs_release_seqid(data
->arg
.lock_seqid
);
5799 nfs4_sequence_done(task
, &data
->res
.seq_res
);
5800 dprintk("%s: done!, ret = %d\n", __func__
, data
->rpc_status
);
5803 static void nfs4_lock_done(struct rpc_task
*task
, void *calldata
)
5805 struct nfs4_lockdata
*data
= calldata
;
5806 struct nfs4_lock_state
*lsp
= data
->lsp
;
5808 dprintk("%s: begin!\n", __func__
);
5810 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
5813 data
->rpc_status
= task
->tk_status
;
5814 switch (task
->tk_status
) {
5816 renew_lease(NFS_SERVER(d_inode(data
->ctx
->dentry
)),
5818 if (data
->arg
.new_lock
) {
5819 data
->fl
.fl_flags
&= ~(FL_SLEEP
| FL_ACCESS
);
5820 if (do_vfs_lock(lsp
->ls_state
->inode
, &data
->fl
) < 0) {
5821 rpc_restart_call_prepare(task
);
5825 if (data
->arg
.new_lock_owner
!= 0) {
5826 nfs_confirm_seqid(&lsp
->ls_seqid
, 0);
5827 nfs4_stateid_copy(&lsp
->ls_stateid
, &data
->res
.stateid
);
5828 set_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
);
5829 } else if (!nfs4_update_lock_stateid(lsp
, &data
->res
.stateid
))
5830 rpc_restart_call_prepare(task
);
5832 case -NFS4ERR_BAD_STATEID
:
5833 case -NFS4ERR_OLD_STATEID
:
5834 case -NFS4ERR_STALE_STATEID
:
5835 case -NFS4ERR_EXPIRED
:
5836 if (data
->arg
.new_lock_owner
!= 0) {
5837 if (!nfs4_stateid_match(&data
->arg
.open_stateid
,
5838 &lsp
->ls_state
->open_stateid
))
5839 rpc_restart_call_prepare(task
);
5840 } else if (!nfs4_stateid_match(&data
->arg
.lock_stateid
,
5842 rpc_restart_call_prepare(task
);
5844 dprintk("%s: done, ret = %d!\n", __func__
, data
->rpc_status
);
5847 static void nfs4_lock_release(void *calldata
)
5849 struct nfs4_lockdata
*data
= calldata
;
5851 dprintk("%s: begin!\n", __func__
);
5852 nfs_free_seqid(data
->arg
.open_seqid
);
5853 if (data
->cancelled
!= 0) {
5854 struct rpc_task
*task
;
5855 task
= nfs4_do_unlck(&data
->fl
, data
->ctx
, data
->lsp
,
5856 data
->arg
.lock_seqid
);
5858 rpc_put_task_async(task
);
5859 dprintk("%s: cancelling lock!\n", __func__
);
5861 nfs_free_seqid(data
->arg
.lock_seqid
);
5862 nfs4_put_lock_state(data
->lsp
);
5863 put_nfs_open_context(data
->ctx
);
5864 fput(data
->fl
.fl_file
);
5866 dprintk("%s: done!\n", __func__
);
5869 static const struct rpc_call_ops nfs4_lock_ops
= {
5870 .rpc_call_prepare
= nfs4_lock_prepare
,
5871 .rpc_call_done
= nfs4_lock_done
,
5872 .rpc_release
= nfs4_lock_release
,
5875 static void nfs4_handle_setlk_error(struct nfs_server
*server
, struct nfs4_lock_state
*lsp
, int new_lock_owner
, int error
)
5878 case -NFS4ERR_ADMIN_REVOKED
:
5879 case -NFS4ERR_BAD_STATEID
:
5880 lsp
->ls_seqid
.flags
&= ~NFS_SEQID_CONFIRMED
;
5881 if (new_lock_owner
!= 0 ||
5882 test_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
) != 0)
5883 nfs4_schedule_stateid_recovery(server
, lsp
->ls_state
);
5885 case -NFS4ERR_STALE_STATEID
:
5886 lsp
->ls_seqid
.flags
&= ~NFS_SEQID_CONFIRMED
;
5887 case -NFS4ERR_EXPIRED
:
5888 nfs4_schedule_lease_recovery(server
->nfs_client
);
5892 static int _nfs4_do_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*fl
, int recovery_type
)
5894 struct nfs4_lockdata
*data
;
5895 struct rpc_task
*task
;
5896 struct rpc_message msg
= {
5897 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCK
],
5898 .rpc_cred
= state
->owner
->so_cred
,
5900 struct rpc_task_setup task_setup_data
= {
5901 .rpc_client
= NFS_CLIENT(state
->inode
),
5902 .rpc_message
= &msg
,
5903 .callback_ops
= &nfs4_lock_ops
,
5904 .workqueue
= nfsiod_workqueue
,
5905 .flags
= RPC_TASK_ASYNC
,
5909 dprintk("%s: begin!\n", __func__
);
5910 data
= nfs4_alloc_lockdata(fl
, nfs_file_open_context(fl
->fl_file
),
5911 fl
->fl_u
.nfs4_fl
.owner
,
5912 recovery_type
== NFS_LOCK_NEW
? GFP_KERNEL
: GFP_NOFS
);
5916 data
->arg
.block
= 1;
5917 nfs4_init_sequence(&data
->arg
.seq_args
, &data
->res
.seq_res
, 1);
5918 msg
.rpc_argp
= &data
->arg
;
5919 msg
.rpc_resp
= &data
->res
;
5920 task_setup_data
.callback_data
= data
;
5921 if (recovery_type
> NFS_LOCK_NEW
) {
5922 if (recovery_type
== NFS_LOCK_RECLAIM
)
5923 data
->arg
.reclaim
= NFS_LOCK_RECLAIM
;
5924 nfs4_set_sequence_privileged(&data
->arg
.seq_args
);
5926 data
->arg
.new_lock
= 1;
5927 task
= rpc_run_task(&task_setup_data
);
5929 return PTR_ERR(task
);
5930 ret
= nfs4_wait_for_completion_rpc_task(task
);
5932 ret
= data
->rpc_status
;
5934 nfs4_handle_setlk_error(data
->server
, data
->lsp
,
5935 data
->arg
.new_lock_owner
, ret
);
5937 data
->cancelled
= 1;
5939 dprintk("%s: done, ret = %d!\n", __func__
, ret
);
5943 static int nfs4_lock_reclaim(struct nfs4_state
*state
, struct file_lock
*request
)
5945 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
5946 struct nfs4_exception exception
= {
5947 .inode
= state
->inode
,
5952 /* Cache the lock if possible... */
5953 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) != 0)
5955 err
= _nfs4_do_setlk(state
, F_SETLK
, request
, NFS_LOCK_RECLAIM
);
5956 trace_nfs4_lock_reclaim(request
, state
, F_SETLK
, err
);
5957 if (err
!= -NFS4ERR_DELAY
)
5959 nfs4_handle_exception(server
, err
, &exception
);
5960 } while (exception
.retry
);
5964 static int nfs4_lock_expired(struct nfs4_state
*state
, struct file_lock
*request
)
5966 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
5967 struct nfs4_exception exception
= {
5968 .inode
= state
->inode
,
5972 err
= nfs4_set_lock_state(state
, request
);
5975 if (!recover_lost_locks
) {
5976 set_bit(NFS_LOCK_LOST
, &request
->fl_u
.nfs4_fl
.owner
->ls_flags
);
5980 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) != 0)
5982 err
= _nfs4_do_setlk(state
, F_SETLK
, request
, NFS_LOCK_EXPIRED
);
5983 trace_nfs4_lock_expired(request
, state
, F_SETLK
, err
);
5987 case -NFS4ERR_GRACE
:
5988 case -NFS4ERR_DELAY
:
5989 nfs4_handle_exception(server
, err
, &exception
);
5992 } while (exception
.retry
);
5997 #if defined(CONFIG_NFS_V4_1)
5999 * nfs41_check_expired_locks - possibly free a lock stateid
6001 * @state: NFSv4 state for an inode
6003 * Returns NFS_OK if recovery for this stateid is now finished.
6004 * Otherwise a negative NFS4ERR value is returned.
6006 static int nfs41_check_expired_locks(struct nfs4_state
*state
)
6008 int status
, ret
= -NFS4ERR_BAD_STATEID
;
6009 struct nfs4_lock_state
*lsp
;
6010 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
6012 list_for_each_entry(lsp
, &state
->lock_states
, ls_locks
) {
6013 if (test_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
)) {
6014 struct rpc_cred
*cred
= lsp
->ls_state
->owner
->so_cred
;
6016 status
= nfs41_test_stateid(server
,
6019 trace_nfs4_test_lock_stateid(state
, lsp
, status
);
6020 if (status
!= NFS_OK
) {
6021 /* Free the stateid unless the server
6022 * informs us the stateid is unrecognized. */
6023 if (status
!= -NFS4ERR_BAD_STATEID
)
6024 nfs41_free_stateid(server
,
6027 clear_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
);
6036 static int nfs41_lock_expired(struct nfs4_state
*state
, struct file_lock
*request
)
6038 int status
= NFS_OK
;
6040 if (test_bit(LK_STATE_IN_USE
, &state
->flags
))
6041 status
= nfs41_check_expired_locks(state
);
6042 if (status
!= NFS_OK
)
6043 status
= nfs4_lock_expired(state
, request
);
6048 static int _nfs4_proc_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
6050 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
6051 unsigned char fl_flags
= request
->fl_flags
;
6052 int status
= -ENOLCK
;
6054 if ((fl_flags
& FL_POSIX
) &&
6055 !test_bit(NFS_STATE_POSIX_LOCKS
, &state
->flags
))
6057 /* Is this a delegated open? */
6058 status
= nfs4_set_lock_state(state
, request
);
6061 request
->fl_flags
|= FL_ACCESS
;
6062 status
= do_vfs_lock(state
->inode
, request
);
6065 down_read(&nfsi
->rwsem
);
6066 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
)) {
6067 /* Yes: cache locks! */
6068 /* ...but avoid races with delegation recall... */
6069 request
->fl_flags
= fl_flags
& ~FL_SLEEP
;
6070 status
= do_vfs_lock(state
->inode
, request
);
6071 up_read(&nfsi
->rwsem
);
6074 up_read(&nfsi
->rwsem
);
6075 status
= _nfs4_do_setlk(state
, cmd
, request
, NFS_LOCK_NEW
);
6077 request
->fl_flags
= fl_flags
;
6081 static int nfs4_proc_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
6083 struct nfs4_exception exception
= {
6085 .inode
= state
->inode
,
6090 err
= _nfs4_proc_setlk(state
, cmd
, request
);
6091 trace_nfs4_set_lock(request
, state
, cmd
, err
);
6092 if (err
== -NFS4ERR_DENIED
)
6094 err
= nfs4_handle_exception(NFS_SERVER(state
->inode
),
6096 } while (exception
.retry
);
6101 nfs4_proc_lock(struct file
*filp
, int cmd
, struct file_lock
*request
)
6103 struct nfs_open_context
*ctx
;
6104 struct nfs4_state
*state
;
6105 unsigned long timeout
= NFS4_LOCK_MINTIMEOUT
;
6108 /* verify open state */
6109 ctx
= nfs_file_open_context(filp
);
6112 if (request
->fl_start
< 0 || request
->fl_end
< 0)
6115 if (IS_GETLK(cmd
)) {
6117 return nfs4_proc_getlk(state
, F_GETLK
, request
);
6121 if (!(IS_SETLK(cmd
) || IS_SETLKW(cmd
)))
6124 if (request
->fl_type
== F_UNLCK
) {
6126 return nfs4_proc_unlck(state
, cmd
, request
);
6133 * Don't rely on the VFS having checked the file open mode,
6134 * since it won't do this for flock() locks.
6136 switch (request
->fl_type
) {
6138 if (!(filp
->f_mode
& FMODE_READ
))
6142 if (!(filp
->f_mode
& FMODE_WRITE
))
6147 status
= nfs4_proc_setlk(state
, cmd
, request
);
6148 if ((status
!= -EAGAIN
) || IS_SETLK(cmd
))
6150 timeout
= nfs4_set_lock_task_retry(timeout
);
6151 status
= -ERESTARTSYS
;
6154 } while(status
< 0);
6158 int nfs4_lock_delegation_recall(struct file_lock
*fl
, struct nfs4_state
*state
, const nfs4_stateid
*stateid
)
6160 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
6163 err
= nfs4_set_lock_state(state
, fl
);
6166 err
= _nfs4_do_setlk(state
, F_SETLK
, fl
, NFS_LOCK_NEW
);
6167 return nfs4_handle_delegation_recall_error(server
, state
, stateid
, err
);
6170 struct nfs_release_lockowner_data
{
6171 struct nfs4_lock_state
*lsp
;
6172 struct nfs_server
*server
;
6173 struct nfs_release_lockowner_args args
;
6174 struct nfs_release_lockowner_res res
;
6175 unsigned long timestamp
;
6178 static void nfs4_release_lockowner_prepare(struct rpc_task
*task
, void *calldata
)
6180 struct nfs_release_lockowner_data
*data
= calldata
;
6181 struct nfs_server
*server
= data
->server
;
6182 nfs40_setup_sequence(server
->nfs_client
->cl_slot_tbl
,
6183 &data
->args
.seq_args
, &data
->res
.seq_res
, task
);
6184 data
->args
.lock_owner
.clientid
= server
->nfs_client
->cl_clientid
;
6185 data
->timestamp
= jiffies
;
6188 static void nfs4_release_lockowner_done(struct rpc_task
*task
, void *calldata
)
6190 struct nfs_release_lockowner_data
*data
= calldata
;
6191 struct nfs_server
*server
= data
->server
;
6193 nfs40_sequence_done(task
, &data
->res
.seq_res
);
6195 switch (task
->tk_status
) {
6197 renew_lease(server
, data
->timestamp
);
6199 case -NFS4ERR_STALE_CLIENTID
:
6200 case -NFS4ERR_EXPIRED
:
6201 nfs4_schedule_lease_recovery(server
->nfs_client
);
6203 case -NFS4ERR_LEASE_MOVED
:
6204 case -NFS4ERR_DELAY
:
6205 if (nfs4_async_handle_error(task
, server
,
6206 NULL
, NULL
) == -EAGAIN
)
6207 rpc_restart_call_prepare(task
);
6211 static void nfs4_release_lockowner_release(void *calldata
)
6213 struct nfs_release_lockowner_data
*data
= calldata
;
6214 nfs4_free_lock_state(data
->server
, data
->lsp
);
6218 static const struct rpc_call_ops nfs4_release_lockowner_ops
= {
6219 .rpc_call_prepare
= nfs4_release_lockowner_prepare
,
6220 .rpc_call_done
= nfs4_release_lockowner_done
,
6221 .rpc_release
= nfs4_release_lockowner_release
,
6225 nfs4_release_lockowner(struct nfs_server
*server
, struct nfs4_lock_state
*lsp
)
6227 struct nfs_release_lockowner_data
*data
;
6228 struct rpc_message msg
= {
6229 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RELEASE_LOCKOWNER
],
6232 if (server
->nfs_client
->cl_mvops
->minor_version
!= 0)
6235 data
= kmalloc(sizeof(*data
), GFP_NOFS
);
6239 data
->server
= server
;
6240 data
->args
.lock_owner
.clientid
= server
->nfs_client
->cl_clientid
;
6241 data
->args
.lock_owner
.id
= lsp
->ls_seqid
.owner_id
;
6242 data
->args
.lock_owner
.s_dev
= server
->s_dev
;
6244 msg
.rpc_argp
= &data
->args
;
6245 msg
.rpc_resp
= &data
->res
;
6246 nfs4_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 0);
6247 rpc_call_async(server
->client
, &msg
, 0, &nfs4_release_lockowner_ops
, data
);
6250 #define XATTR_NAME_NFSV4_ACL "system.nfs4_acl"
6252 static int nfs4_xattr_set_nfs4_acl(struct dentry
*dentry
, const char *key
,
6253 const void *buf
, size_t buflen
,
6254 int flags
, int type
)
6256 if (strcmp(key
, "") != 0)
6259 return nfs4_proc_set_acl(d_inode(dentry
), buf
, buflen
);
6262 static int nfs4_xattr_get_nfs4_acl(struct dentry
*dentry
, const char *key
,
6263 void *buf
, size_t buflen
, int type
)
6265 if (strcmp(key
, "") != 0)
6268 return nfs4_proc_get_acl(d_inode(dentry
), buf
, buflen
);
6271 static size_t nfs4_xattr_list_nfs4_acl(struct dentry
*dentry
, char *list
,
6272 size_t list_len
, const char *name
,
6273 size_t name_len
, int type
)
6275 size_t len
= sizeof(XATTR_NAME_NFSV4_ACL
);
6277 if (!nfs4_server_supports_acls(NFS_SERVER(d_inode(dentry
))))
6280 if (list
&& len
<= list_len
)
6281 memcpy(list
, XATTR_NAME_NFSV4_ACL
, len
);
6285 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
6286 static inline int nfs4_server_supports_labels(struct nfs_server
*server
)
6288 return server
->caps
& NFS_CAP_SECURITY_LABEL
;
6291 static int nfs4_xattr_set_nfs4_label(struct dentry
*dentry
, const char *key
,
6292 const void *buf
, size_t buflen
,
6293 int flags
, int type
)
6295 if (security_ismaclabel(key
))
6296 return nfs4_set_security_label(dentry
, buf
, buflen
);
6301 static int nfs4_xattr_get_nfs4_label(struct dentry
*dentry
, const char *key
,
6302 void *buf
, size_t buflen
, int type
)
6304 if (security_ismaclabel(key
))
6305 return nfs4_get_security_label(d_inode(dentry
), buf
, buflen
);
6309 static size_t nfs4_xattr_list_nfs4_label(struct dentry
*dentry
, char *list
,
6310 size_t list_len
, const char *name
,
6311 size_t name_len
, int type
)
6315 if (nfs_server_capable(d_inode(dentry
), NFS_CAP_SECURITY_LABEL
)) {
6316 len
= security_inode_listsecurity(d_inode(dentry
), NULL
, 0);
6317 if (list
&& len
<= list_len
)
6318 security_inode_listsecurity(d_inode(dentry
), list
, len
);
6323 static const struct xattr_handler nfs4_xattr_nfs4_label_handler
= {
6324 .prefix
= XATTR_SECURITY_PREFIX
,
6325 .list
= nfs4_xattr_list_nfs4_label
,
6326 .get
= nfs4_xattr_get_nfs4_label
,
6327 .set
= nfs4_xattr_set_nfs4_label
,
6333 * nfs_fhget will use either the mounted_on_fileid or the fileid
6335 static void nfs_fixup_referral_attributes(struct nfs_fattr
*fattr
)
6337 if (!(((fattr
->valid
& NFS_ATTR_FATTR_MOUNTED_ON_FILEID
) ||
6338 (fattr
->valid
& NFS_ATTR_FATTR_FILEID
)) &&
6339 (fattr
->valid
& NFS_ATTR_FATTR_FSID
) &&
6340 (fattr
->valid
& NFS_ATTR_FATTR_V4_LOCATIONS
)))
6343 fattr
->valid
|= NFS_ATTR_FATTR_TYPE
| NFS_ATTR_FATTR_MODE
|
6344 NFS_ATTR_FATTR_NLINK
| NFS_ATTR_FATTR_V4_REFERRAL
;
6345 fattr
->mode
= S_IFDIR
| S_IRUGO
| S_IXUGO
;
6349 static int _nfs4_proc_fs_locations(struct rpc_clnt
*client
, struct inode
*dir
,
6350 const struct qstr
*name
,
6351 struct nfs4_fs_locations
*fs_locations
,
6354 struct nfs_server
*server
= NFS_SERVER(dir
);
6356 [0] = FATTR4_WORD0_FSID
| FATTR4_WORD0_FS_LOCATIONS
,
6358 struct nfs4_fs_locations_arg args
= {
6359 .dir_fh
= NFS_FH(dir
),
6364 struct nfs4_fs_locations_res res
= {
6365 .fs_locations
= fs_locations
,
6367 struct rpc_message msg
= {
6368 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FS_LOCATIONS
],
6374 dprintk("%s: start\n", __func__
);
6376 /* Ask for the fileid of the absent filesystem if mounted_on_fileid
6377 * is not supported */
6378 if (NFS_SERVER(dir
)->attr_bitmask
[1] & FATTR4_WORD1_MOUNTED_ON_FILEID
)
6379 bitmask
[1] |= FATTR4_WORD1_MOUNTED_ON_FILEID
;
6381 bitmask
[0] |= FATTR4_WORD0_FILEID
;
6383 nfs_fattr_init(&fs_locations
->fattr
);
6384 fs_locations
->server
= server
;
6385 fs_locations
->nlocations
= 0;
6386 status
= nfs4_call_sync(client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
6387 dprintk("%s: returned status = %d\n", __func__
, status
);
6391 int nfs4_proc_fs_locations(struct rpc_clnt
*client
, struct inode
*dir
,
6392 const struct qstr
*name
,
6393 struct nfs4_fs_locations
*fs_locations
,
6396 struct nfs4_exception exception
= { };
6399 err
= _nfs4_proc_fs_locations(client
, dir
, name
,
6400 fs_locations
, page
);
6401 trace_nfs4_get_fs_locations(dir
, name
, err
);
6402 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
6404 } while (exception
.retry
);
6409 * This operation also signals the server that this client is
6410 * performing migration recovery. The server can stop returning
6411 * NFS4ERR_LEASE_MOVED to this client. A RENEW operation is
6412 * appended to this compound to identify the client ID which is
6413 * performing recovery.
6415 static int _nfs40_proc_get_locations(struct inode
*inode
,
6416 struct nfs4_fs_locations
*locations
,
6417 struct page
*page
, struct rpc_cred
*cred
)
6419 struct nfs_server
*server
= NFS_SERVER(inode
);
6420 struct rpc_clnt
*clnt
= server
->client
;
6422 [0] = FATTR4_WORD0_FSID
| FATTR4_WORD0_FS_LOCATIONS
,
6424 struct nfs4_fs_locations_arg args
= {
6425 .clientid
= server
->nfs_client
->cl_clientid
,
6426 .fh
= NFS_FH(inode
),
6429 .migration
= 1, /* skip LOOKUP */
6430 .renew
= 1, /* append RENEW */
6432 struct nfs4_fs_locations_res res
= {
6433 .fs_locations
= locations
,
6437 struct rpc_message msg
= {
6438 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FS_LOCATIONS
],
6443 unsigned long now
= jiffies
;
6446 nfs_fattr_init(&locations
->fattr
);
6447 locations
->server
= server
;
6448 locations
->nlocations
= 0;
6450 nfs4_init_sequence(&args
.seq_args
, &res
.seq_res
, 0);
6451 nfs4_set_sequence_privileged(&args
.seq_args
);
6452 status
= nfs4_call_sync_sequence(clnt
, server
, &msg
,
6453 &args
.seq_args
, &res
.seq_res
);
6457 renew_lease(server
, now
);
6461 #ifdef CONFIG_NFS_V4_1
6464 * This operation also signals the server that this client is
6465 * performing migration recovery. The server can stop asserting
6466 * SEQ4_STATUS_LEASE_MOVED for this client. The client ID
6467 * performing this operation is identified in the SEQUENCE
6468 * operation in this compound.
6470 * When the client supports GETATTR(fs_locations_info), it can
6471 * be plumbed in here.
6473 static int _nfs41_proc_get_locations(struct inode
*inode
,
6474 struct nfs4_fs_locations
*locations
,
6475 struct page
*page
, struct rpc_cred
*cred
)
6477 struct nfs_server
*server
= NFS_SERVER(inode
);
6478 struct rpc_clnt
*clnt
= server
->client
;
6480 [0] = FATTR4_WORD0_FSID
| FATTR4_WORD0_FS_LOCATIONS
,
6482 struct nfs4_fs_locations_arg args
= {
6483 .fh
= NFS_FH(inode
),
6486 .migration
= 1, /* skip LOOKUP */
6488 struct nfs4_fs_locations_res res
= {
6489 .fs_locations
= locations
,
6492 struct rpc_message msg
= {
6493 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FS_LOCATIONS
],
6500 nfs_fattr_init(&locations
->fattr
);
6501 locations
->server
= server
;
6502 locations
->nlocations
= 0;
6504 nfs4_init_sequence(&args
.seq_args
, &res
.seq_res
, 0);
6505 nfs4_set_sequence_privileged(&args
.seq_args
);
6506 status
= nfs4_call_sync_sequence(clnt
, server
, &msg
,
6507 &args
.seq_args
, &res
.seq_res
);
6508 if (status
== NFS4_OK
&&
6509 res
.seq_res
.sr_status_flags
& SEQ4_STATUS_LEASE_MOVED
)
6510 status
= -NFS4ERR_LEASE_MOVED
;
6514 #endif /* CONFIG_NFS_V4_1 */
6517 * nfs4_proc_get_locations - discover locations for a migrated FSID
6518 * @inode: inode on FSID that is migrating
6519 * @locations: result of query
6521 * @cred: credential to use for this operation
6523 * Returns NFS4_OK on success, a negative NFS4ERR status code if the
6524 * operation failed, or a negative errno if a local error occurred.
6526 * On success, "locations" is filled in, but if the server has
6527 * no locations information, NFS_ATTR_FATTR_V4_LOCATIONS is not
6530 * -NFS4ERR_LEASE_MOVED is returned if the server still has leases
6531 * from this client that require migration recovery.
6533 int nfs4_proc_get_locations(struct inode
*inode
,
6534 struct nfs4_fs_locations
*locations
,
6535 struct page
*page
, struct rpc_cred
*cred
)
6537 struct nfs_server
*server
= NFS_SERVER(inode
);
6538 struct nfs_client
*clp
= server
->nfs_client
;
6539 const struct nfs4_mig_recovery_ops
*ops
=
6540 clp
->cl_mvops
->mig_recovery_ops
;
6541 struct nfs4_exception exception
= { };
6544 dprintk("%s: FSID %llx:%llx on \"%s\"\n", __func__
,
6545 (unsigned long long)server
->fsid
.major
,
6546 (unsigned long long)server
->fsid
.minor
,
6548 nfs_display_fhandle(NFS_FH(inode
), __func__
);
6551 status
= ops
->get_locations(inode
, locations
, page
, cred
);
6552 if (status
!= -NFS4ERR_DELAY
)
6554 nfs4_handle_exception(server
, status
, &exception
);
6555 } while (exception
.retry
);
6560 * This operation also signals the server that this client is
6561 * performing "lease moved" recovery. The server can stop
6562 * returning NFS4ERR_LEASE_MOVED to this client. A RENEW operation
6563 * is appended to this compound to identify the client ID which is
6564 * performing recovery.
6566 static int _nfs40_proc_fsid_present(struct inode
*inode
, struct rpc_cred
*cred
)
6568 struct nfs_server
*server
= NFS_SERVER(inode
);
6569 struct nfs_client
*clp
= NFS_SERVER(inode
)->nfs_client
;
6570 struct rpc_clnt
*clnt
= server
->client
;
6571 struct nfs4_fsid_present_arg args
= {
6572 .fh
= NFS_FH(inode
),
6573 .clientid
= clp
->cl_clientid
,
6574 .renew
= 1, /* append RENEW */
6576 struct nfs4_fsid_present_res res
= {
6579 struct rpc_message msg
= {
6580 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FSID_PRESENT
],
6585 unsigned long now
= jiffies
;
6588 res
.fh
= nfs_alloc_fhandle();
6592 nfs4_init_sequence(&args
.seq_args
, &res
.seq_res
, 0);
6593 nfs4_set_sequence_privileged(&args
.seq_args
);
6594 status
= nfs4_call_sync_sequence(clnt
, server
, &msg
,
6595 &args
.seq_args
, &res
.seq_res
);
6596 nfs_free_fhandle(res
.fh
);
6600 do_renew_lease(clp
, now
);
6604 #ifdef CONFIG_NFS_V4_1
6607 * This operation also signals the server that this client is
6608 * performing "lease moved" recovery. The server can stop asserting
6609 * SEQ4_STATUS_LEASE_MOVED for this client. The client ID performing
6610 * this operation is identified in the SEQUENCE operation in this
6613 static int _nfs41_proc_fsid_present(struct inode
*inode
, struct rpc_cred
*cred
)
6615 struct nfs_server
*server
= NFS_SERVER(inode
);
6616 struct rpc_clnt
*clnt
= server
->client
;
6617 struct nfs4_fsid_present_arg args
= {
6618 .fh
= NFS_FH(inode
),
6620 struct nfs4_fsid_present_res res
= {
6622 struct rpc_message msg
= {
6623 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FSID_PRESENT
],
6630 res
.fh
= nfs_alloc_fhandle();
6634 nfs4_init_sequence(&args
.seq_args
, &res
.seq_res
, 0);
6635 nfs4_set_sequence_privileged(&args
.seq_args
);
6636 status
= nfs4_call_sync_sequence(clnt
, server
, &msg
,
6637 &args
.seq_args
, &res
.seq_res
);
6638 nfs_free_fhandle(res
.fh
);
6639 if (status
== NFS4_OK
&&
6640 res
.seq_res
.sr_status_flags
& SEQ4_STATUS_LEASE_MOVED
)
6641 status
= -NFS4ERR_LEASE_MOVED
;
6645 #endif /* CONFIG_NFS_V4_1 */
6648 * nfs4_proc_fsid_present - Is this FSID present or absent on server?
6649 * @inode: inode on FSID to check
6650 * @cred: credential to use for this operation
6652 * Server indicates whether the FSID is present, moved, or not
6653 * recognized. This operation is necessary to clear a LEASE_MOVED
6654 * condition for this client ID.
6656 * Returns NFS4_OK if the FSID is present on this server,
6657 * -NFS4ERR_MOVED if the FSID is no longer present, a negative
6658 * NFS4ERR code if some error occurred on the server, or a
6659 * negative errno if a local failure occurred.
6661 int nfs4_proc_fsid_present(struct inode
*inode
, struct rpc_cred
*cred
)
6663 struct nfs_server
*server
= NFS_SERVER(inode
);
6664 struct nfs_client
*clp
= server
->nfs_client
;
6665 const struct nfs4_mig_recovery_ops
*ops
=
6666 clp
->cl_mvops
->mig_recovery_ops
;
6667 struct nfs4_exception exception
= { };
6670 dprintk("%s: FSID %llx:%llx on \"%s\"\n", __func__
,
6671 (unsigned long long)server
->fsid
.major
,
6672 (unsigned long long)server
->fsid
.minor
,
6674 nfs_display_fhandle(NFS_FH(inode
), __func__
);
6677 status
= ops
->fsid_present(inode
, cred
);
6678 if (status
!= -NFS4ERR_DELAY
)
6680 nfs4_handle_exception(server
, status
, &exception
);
6681 } while (exception
.retry
);
6686 * If 'use_integrity' is true and the state managment nfs_client
6687 * cl_rpcclient is using krb5i/p, use the integrity protected cl_rpcclient
6688 * and the machine credential as per RFC3530bis and RFC5661 Security
6689 * Considerations sections. Otherwise, just use the user cred with the
6690 * filesystem's rpc_client.
6692 static int _nfs4_proc_secinfo(struct inode
*dir
, const struct qstr
*name
, struct nfs4_secinfo_flavors
*flavors
, bool use_integrity
)
6695 struct nfs4_secinfo_arg args
= {
6696 .dir_fh
= NFS_FH(dir
),
6699 struct nfs4_secinfo_res res
= {
6702 struct rpc_message msg
= {
6703 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SECINFO
],
6707 struct rpc_clnt
*clnt
= NFS_SERVER(dir
)->client
;
6708 struct rpc_cred
*cred
= NULL
;
6710 if (use_integrity
) {
6711 clnt
= NFS_SERVER(dir
)->nfs_client
->cl_rpcclient
;
6712 cred
= nfs4_get_clid_cred(NFS_SERVER(dir
)->nfs_client
);
6713 msg
.rpc_cred
= cred
;
6716 dprintk("NFS call secinfo %s\n", name
->name
);
6718 nfs4_state_protect(NFS_SERVER(dir
)->nfs_client
,
6719 NFS_SP4_MACH_CRED_SECINFO
, &clnt
, &msg
);
6721 status
= nfs4_call_sync(clnt
, NFS_SERVER(dir
), &msg
, &args
.seq_args
,
6723 dprintk("NFS reply secinfo: %d\n", status
);
6731 int nfs4_proc_secinfo(struct inode
*dir
, const struct qstr
*name
,
6732 struct nfs4_secinfo_flavors
*flavors
)
6734 struct nfs4_exception exception
= { };
6737 err
= -NFS4ERR_WRONGSEC
;
6739 /* try to use integrity protection with machine cred */
6740 if (_nfs4_is_integrity_protected(NFS_SERVER(dir
)->nfs_client
))
6741 err
= _nfs4_proc_secinfo(dir
, name
, flavors
, true);
6744 * if unable to use integrity protection, or SECINFO with
6745 * integrity protection returns NFS4ERR_WRONGSEC (which is
6746 * disallowed by spec, but exists in deployed servers) use
6747 * the current filesystem's rpc_client and the user cred.
6749 if (err
== -NFS4ERR_WRONGSEC
)
6750 err
= _nfs4_proc_secinfo(dir
, name
, flavors
, false);
6752 trace_nfs4_secinfo(dir
, name
, err
);
6753 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
6755 } while (exception
.retry
);
6759 #ifdef CONFIG_NFS_V4_1
6761 * Check the exchange flags returned by the server for invalid flags, having
6762 * both PNFS and NON_PNFS flags set, and not having one of NON_PNFS, PNFS, or
6765 static int nfs4_check_cl_exchange_flags(u32 flags
)
6767 if (flags
& ~EXCHGID4_FLAG_MASK_R
)
6769 if ((flags
& EXCHGID4_FLAG_USE_PNFS_MDS
) &&
6770 (flags
& EXCHGID4_FLAG_USE_NON_PNFS
))
6772 if (!(flags
& (EXCHGID4_FLAG_MASK_PNFS
)))
6776 return -NFS4ERR_INVAL
;
6780 nfs41_same_server_scope(struct nfs41_server_scope
*a
,
6781 struct nfs41_server_scope
*b
)
6783 if (a
->server_scope_sz
== b
->server_scope_sz
&&
6784 memcmp(a
->server_scope
, b
->server_scope
, a
->server_scope_sz
) == 0)
6791 * nfs4_proc_bind_conn_to_session()
6793 * The 4.1 client currently uses the same TCP connection for the
6794 * fore and backchannel.
6796 int nfs4_proc_bind_conn_to_session(struct nfs_client
*clp
, struct rpc_cred
*cred
)
6799 struct nfs41_bind_conn_to_session_args args
= {
6801 .dir
= NFS4_CDFC4_FORE_OR_BOTH
,
6803 struct nfs41_bind_conn_to_session_res res
;
6804 struct rpc_message msg
= {
6806 &nfs4_procedures
[NFSPROC4_CLNT_BIND_CONN_TO_SESSION
],
6812 dprintk("--> %s\n", __func__
);
6814 nfs4_copy_sessionid(&args
.sessionid
, &clp
->cl_session
->sess_id
);
6815 if (!(clp
->cl_session
->flags
& SESSION4_BACK_CHAN
))
6816 args
.dir
= NFS4_CDFC4_FORE
;
6818 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
6819 trace_nfs4_bind_conn_to_session(clp
, status
);
6821 if (memcmp(res
.sessionid
.data
,
6822 clp
->cl_session
->sess_id
.data
, NFS4_MAX_SESSIONID_LEN
)) {
6823 dprintk("NFS: %s: Session ID mismatch\n", __func__
);
6827 if ((res
.dir
& args
.dir
) != res
.dir
|| res
.dir
== 0) {
6828 dprintk("NFS: %s: Unexpected direction from server\n",
6833 if (res
.use_conn_in_rdma_mode
!= args
.use_conn_in_rdma_mode
) {
6834 dprintk("NFS: %s: Server returned RDMA mode = true\n",
6841 dprintk("<-- %s status= %d\n", __func__
, status
);
6846 * Minimum set of SP4_MACH_CRED operations from RFC 5661 in the enforce map
6847 * and operations we'd like to see to enable certain features in the allow map
6849 static const struct nfs41_state_protection nfs4_sp4_mach_cred_request
= {
6850 .how
= SP4_MACH_CRED
,
6851 .enforce
.u
.words
= {
6852 [1] = 1 << (OP_BIND_CONN_TO_SESSION
- 32) |
6853 1 << (OP_EXCHANGE_ID
- 32) |
6854 1 << (OP_CREATE_SESSION
- 32) |
6855 1 << (OP_DESTROY_SESSION
- 32) |
6856 1 << (OP_DESTROY_CLIENTID
- 32)
6859 [0] = 1 << (OP_CLOSE
) |
6862 [1] = 1 << (OP_SECINFO
- 32) |
6863 1 << (OP_SECINFO_NO_NAME
- 32) |
6864 1 << (OP_TEST_STATEID
- 32) |
6865 1 << (OP_FREE_STATEID
- 32) |
6866 1 << (OP_WRITE
- 32)
6871 * Select the state protection mode for client `clp' given the server results
6872 * from exchange_id in `sp'.
6874 * Returns 0 on success, negative errno otherwise.
6876 static int nfs4_sp4_select_mode(struct nfs_client
*clp
,
6877 struct nfs41_state_protection
*sp
)
6879 static const u32 supported_enforce
[NFS4_OP_MAP_NUM_WORDS
] = {
6880 [1] = 1 << (OP_BIND_CONN_TO_SESSION
- 32) |
6881 1 << (OP_EXCHANGE_ID
- 32) |
6882 1 << (OP_CREATE_SESSION
- 32) |
6883 1 << (OP_DESTROY_SESSION
- 32) |
6884 1 << (OP_DESTROY_CLIENTID
- 32)
6888 if (sp
->how
== SP4_MACH_CRED
) {
6889 /* Print state protect result */
6890 dfprintk(MOUNT
, "Server SP4_MACH_CRED support:\n");
6891 for (i
= 0; i
<= LAST_NFS4_OP
; i
++) {
6892 if (test_bit(i
, sp
->enforce
.u
.longs
))
6893 dfprintk(MOUNT
, " enforce op %d\n", i
);
6894 if (test_bit(i
, sp
->allow
.u
.longs
))
6895 dfprintk(MOUNT
, " allow op %d\n", i
);
6898 /* make sure nothing is on enforce list that isn't supported */
6899 for (i
= 0; i
< NFS4_OP_MAP_NUM_WORDS
; i
++) {
6900 if (sp
->enforce
.u
.words
[i
] & ~supported_enforce
[i
]) {
6901 dfprintk(MOUNT
, "sp4_mach_cred: disabled\n");
6907 * Minimal mode - state operations are allowed to use machine
6908 * credential. Note this already happens by default, so the
6909 * client doesn't have to do anything more than the negotiation.
6911 * NOTE: we don't care if EXCHANGE_ID is in the list -
6912 * we're already using the machine cred for exchange_id
6913 * and will never use a different cred.
6915 if (test_bit(OP_BIND_CONN_TO_SESSION
, sp
->enforce
.u
.longs
) &&
6916 test_bit(OP_CREATE_SESSION
, sp
->enforce
.u
.longs
) &&
6917 test_bit(OP_DESTROY_SESSION
, sp
->enforce
.u
.longs
) &&
6918 test_bit(OP_DESTROY_CLIENTID
, sp
->enforce
.u
.longs
)) {
6919 dfprintk(MOUNT
, "sp4_mach_cred:\n");
6920 dfprintk(MOUNT
, " minimal mode enabled\n");
6921 set_bit(NFS_SP4_MACH_CRED_MINIMAL
, &clp
->cl_sp4_flags
);
6923 dfprintk(MOUNT
, "sp4_mach_cred: disabled\n");
6927 if (test_bit(OP_CLOSE
, sp
->allow
.u
.longs
) &&
6928 test_bit(OP_LOCKU
, sp
->allow
.u
.longs
)) {
6929 dfprintk(MOUNT
, " cleanup mode enabled\n");
6930 set_bit(NFS_SP4_MACH_CRED_CLEANUP
, &clp
->cl_sp4_flags
);
6933 if (test_bit(OP_SECINFO
, sp
->allow
.u
.longs
) &&
6934 test_bit(OP_SECINFO_NO_NAME
, sp
->allow
.u
.longs
)) {
6935 dfprintk(MOUNT
, " secinfo mode enabled\n");
6936 set_bit(NFS_SP4_MACH_CRED_SECINFO
, &clp
->cl_sp4_flags
);
6939 if (test_bit(OP_TEST_STATEID
, sp
->allow
.u
.longs
) &&
6940 test_bit(OP_FREE_STATEID
, sp
->allow
.u
.longs
)) {
6941 dfprintk(MOUNT
, " stateid mode enabled\n");
6942 set_bit(NFS_SP4_MACH_CRED_STATEID
, &clp
->cl_sp4_flags
);
6945 if (test_bit(OP_WRITE
, sp
->allow
.u
.longs
)) {
6946 dfprintk(MOUNT
, " write mode enabled\n");
6947 set_bit(NFS_SP4_MACH_CRED_WRITE
, &clp
->cl_sp4_flags
);
6950 if (test_bit(OP_COMMIT
, sp
->allow
.u
.longs
)) {
6951 dfprintk(MOUNT
, " commit mode enabled\n");
6952 set_bit(NFS_SP4_MACH_CRED_COMMIT
, &clp
->cl_sp4_flags
);
6960 * _nfs4_proc_exchange_id()
6962 * Wrapper for EXCHANGE_ID operation.
6964 static int _nfs4_proc_exchange_id(struct nfs_client
*clp
, struct rpc_cred
*cred
,
6967 nfs4_verifier verifier
;
6968 struct nfs41_exchange_id_args args
= {
6969 .verifier
= &verifier
,
6971 #ifdef CONFIG_NFS_V4_1_MIGRATION
6972 .flags
= EXCHGID4_FLAG_SUPP_MOVED_REFER
|
6973 EXCHGID4_FLAG_BIND_PRINC_STATEID
|
6974 EXCHGID4_FLAG_SUPP_MOVED_MIGR
,
6976 .flags
= EXCHGID4_FLAG_SUPP_MOVED_REFER
|
6977 EXCHGID4_FLAG_BIND_PRINC_STATEID
,
6980 struct nfs41_exchange_id_res res
= {
6984 struct rpc_message msg
= {
6985 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_EXCHANGE_ID
],
6991 nfs4_init_boot_verifier(clp
, &verifier
);
6993 status
= nfs4_init_uniform_client_string(clp
);
6997 dprintk("NFS call exchange_id auth=%s, '%s'\n",
6998 clp
->cl_rpcclient
->cl_auth
->au_ops
->au_name
,
7001 res
.server_owner
= kzalloc(sizeof(struct nfs41_server_owner
),
7003 if (unlikely(res
.server_owner
== NULL
)) {
7008 res
.server_scope
= kzalloc(sizeof(struct nfs41_server_scope
),
7010 if (unlikely(res
.server_scope
== NULL
)) {
7012 goto out_server_owner
;
7015 res
.impl_id
= kzalloc(sizeof(struct nfs41_impl_id
), GFP_NOFS
);
7016 if (unlikely(res
.impl_id
== NULL
)) {
7018 goto out_server_scope
;
7023 args
.state_protect
.how
= SP4_NONE
;
7027 args
.state_protect
= nfs4_sp4_mach_cred_request
;
7037 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
7038 trace_nfs4_exchange_id(clp
, status
);
7040 status
= nfs4_check_cl_exchange_flags(res
.flags
);
7043 status
= nfs4_sp4_select_mode(clp
, &res
.state_protect
);
7046 clp
->cl_clientid
= res
.clientid
;
7047 clp
->cl_exchange_flags
= res
.flags
;
7048 /* Client ID is not confirmed */
7049 if (!(res
.flags
& EXCHGID4_FLAG_CONFIRMED_R
)) {
7050 clear_bit(NFS4_SESSION_ESTABLISHED
,
7051 &clp
->cl_session
->session_state
);
7052 clp
->cl_seqid
= res
.seqid
;
7055 kfree(clp
->cl_serverowner
);
7056 clp
->cl_serverowner
= res
.server_owner
;
7057 res
.server_owner
= NULL
;
7059 /* use the most recent implementation id */
7060 kfree(clp
->cl_implid
);
7061 clp
->cl_implid
= res
.impl_id
;
7064 if (clp
->cl_serverscope
!= NULL
&&
7065 !nfs41_same_server_scope(clp
->cl_serverscope
,
7066 res
.server_scope
)) {
7067 dprintk("%s: server_scope mismatch detected\n",
7069 set_bit(NFS4CLNT_SERVER_SCOPE_MISMATCH
, &clp
->cl_state
);
7070 kfree(clp
->cl_serverscope
);
7071 clp
->cl_serverscope
= NULL
;
7074 if (clp
->cl_serverscope
== NULL
) {
7075 clp
->cl_serverscope
= res
.server_scope
;
7076 res
.server_scope
= NULL
;
7083 kfree(res
.server_scope
);
7085 kfree(res
.server_owner
);
7087 if (clp
->cl_implid
!= NULL
)
7088 dprintk("NFS reply exchange_id: Server Implementation ID: "
7089 "domain: %s, name: %s, date: %llu,%u\n",
7090 clp
->cl_implid
->domain
, clp
->cl_implid
->name
,
7091 clp
->cl_implid
->date
.seconds
,
7092 clp
->cl_implid
->date
.nseconds
);
7093 dprintk("NFS reply exchange_id: %d\n", status
);
7098 * nfs4_proc_exchange_id()
7100 * Returns zero, a negative errno, or a negative NFS4ERR status code.
7102 * Since the clientid has expired, all compounds using sessions
7103 * associated with the stale clientid will be returning
7104 * NFS4ERR_BADSESSION in the sequence operation, and will therefore
7105 * be in some phase of session reset.
7107 * Will attempt to negotiate SP4_MACH_CRED if krb5i / krb5p auth is used.
7109 int nfs4_proc_exchange_id(struct nfs_client
*clp
, struct rpc_cred
*cred
)
7111 rpc_authflavor_t authflavor
= clp
->cl_rpcclient
->cl_auth
->au_flavor
;
7114 /* try SP4_MACH_CRED if krb5i/p */
7115 if (authflavor
== RPC_AUTH_GSS_KRB5I
||
7116 authflavor
== RPC_AUTH_GSS_KRB5P
) {
7117 status
= _nfs4_proc_exchange_id(clp
, cred
, SP4_MACH_CRED
);
7123 return _nfs4_proc_exchange_id(clp
, cred
, SP4_NONE
);
7126 static int _nfs4_proc_destroy_clientid(struct nfs_client
*clp
,
7127 struct rpc_cred
*cred
)
7129 struct rpc_message msg
= {
7130 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DESTROY_CLIENTID
],
7136 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
7137 trace_nfs4_destroy_clientid(clp
, status
);
7139 dprintk("NFS: Got error %d from the server %s on "
7140 "DESTROY_CLIENTID.", status
, clp
->cl_hostname
);
7144 static int nfs4_proc_destroy_clientid(struct nfs_client
*clp
,
7145 struct rpc_cred
*cred
)
7150 for (loop
= NFS4_MAX_LOOP_ON_RECOVER
; loop
!= 0; loop
--) {
7151 ret
= _nfs4_proc_destroy_clientid(clp
, cred
);
7153 case -NFS4ERR_DELAY
:
7154 case -NFS4ERR_CLIENTID_BUSY
:
7164 int nfs4_destroy_clientid(struct nfs_client
*clp
)
7166 struct rpc_cred
*cred
;
7169 if (clp
->cl_mvops
->minor_version
< 1)
7171 if (clp
->cl_exchange_flags
== 0)
7173 if (clp
->cl_preserve_clid
)
7175 cred
= nfs4_get_clid_cred(clp
);
7176 ret
= nfs4_proc_destroy_clientid(clp
, cred
);
7181 case -NFS4ERR_STALE_CLIENTID
:
7182 clp
->cl_exchange_flags
= 0;
7188 struct nfs4_get_lease_time_data
{
7189 struct nfs4_get_lease_time_args
*args
;
7190 struct nfs4_get_lease_time_res
*res
;
7191 struct nfs_client
*clp
;
7194 static void nfs4_get_lease_time_prepare(struct rpc_task
*task
,
7197 struct nfs4_get_lease_time_data
*data
=
7198 (struct nfs4_get_lease_time_data
*)calldata
;
7200 dprintk("--> %s\n", __func__
);
7201 /* just setup sequence, do not trigger session recovery
7202 since we're invoked within one */
7203 nfs41_setup_sequence(data
->clp
->cl_session
,
7204 &data
->args
->la_seq_args
,
7205 &data
->res
->lr_seq_res
,
7207 dprintk("<-- %s\n", __func__
);
7211 * Called from nfs4_state_manager thread for session setup, so don't recover
7212 * from sequence operation or clientid errors.
7214 static void nfs4_get_lease_time_done(struct rpc_task
*task
, void *calldata
)
7216 struct nfs4_get_lease_time_data
*data
=
7217 (struct nfs4_get_lease_time_data
*)calldata
;
7219 dprintk("--> %s\n", __func__
);
7220 if (!nfs41_sequence_done(task
, &data
->res
->lr_seq_res
))
7222 switch (task
->tk_status
) {
7223 case -NFS4ERR_DELAY
:
7224 case -NFS4ERR_GRACE
:
7225 dprintk("%s Retry: tk_status %d\n", __func__
, task
->tk_status
);
7226 rpc_delay(task
, NFS4_POLL_RETRY_MIN
);
7227 task
->tk_status
= 0;
7229 case -NFS4ERR_RETRY_UNCACHED_REP
:
7230 rpc_restart_call_prepare(task
);
7233 dprintk("<-- %s\n", __func__
);
7236 static const struct rpc_call_ops nfs4_get_lease_time_ops
= {
7237 .rpc_call_prepare
= nfs4_get_lease_time_prepare
,
7238 .rpc_call_done
= nfs4_get_lease_time_done
,
7241 int nfs4_proc_get_lease_time(struct nfs_client
*clp
, struct nfs_fsinfo
*fsinfo
)
7243 struct rpc_task
*task
;
7244 struct nfs4_get_lease_time_args args
;
7245 struct nfs4_get_lease_time_res res
= {
7246 .lr_fsinfo
= fsinfo
,
7248 struct nfs4_get_lease_time_data data
= {
7253 struct rpc_message msg
= {
7254 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GET_LEASE_TIME
],
7258 struct rpc_task_setup task_setup
= {
7259 .rpc_client
= clp
->cl_rpcclient
,
7260 .rpc_message
= &msg
,
7261 .callback_ops
= &nfs4_get_lease_time_ops
,
7262 .callback_data
= &data
,
7263 .flags
= RPC_TASK_TIMEOUT
,
7267 nfs4_init_sequence(&args
.la_seq_args
, &res
.lr_seq_res
, 0);
7268 nfs4_set_sequence_privileged(&args
.la_seq_args
);
7269 dprintk("--> %s\n", __func__
);
7270 task
= rpc_run_task(&task_setup
);
7273 status
= PTR_ERR(task
);
7275 status
= task
->tk_status
;
7278 dprintk("<-- %s return %d\n", __func__
, status
);
7284 * Initialize the values to be used by the client in CREATE_SESSION
7285 * If nfs4_init_session set the fore channel request and response sizes,
7288 * Set the back channel max_resp_sz_cached to zero to force the client to
7289 * always set csa_cachethis to FALSE because the current implementation
7290 * of the back channel DRC only supports caching the CB_SEQUENCE operation.
7292 static void nfs4_init_channel_attrs(struct nfs41_create_session_args
*args
)
7294 unsigned int max_rqst_sz
, max_resp_sz
;
7296 max_rqst_sz
= NFS_MAX_FILE_IO_SIZE
+ nfs41_maxwrite_overhead
;
7297 max_resp_sz
= NFS_MAX_FILE_IO_SIZE
+ nfs41_maxread_overhead
;
7299 /* Fore channel attributes */
7300 args
->fc_attrs
.max_rqst_sz
= max_rqst_sz
;
7301 args
->fc_attrs
.max_resp_sz
= max_resp_sz
;
7302 args
->fc_attrs
.max_ops
= NFS4_MAX_OPS
;
7303 args
->fc_attrs
.max_reqs
= max_session_slots
;
7305 dprintk("%s: Fore Channel : max_rqst_sz=%u max_resp_sz=%u "
7306 "max_ops=%u max_reqs=%u\n",
7308 args
->fc_attrs
.max_rqst_sz
, args
->fc_attrs
.max_resp_sz
,
7309 args
->fc_attrs
.max_ops
, args
->fc_attrs
.max_reqs
);
7311 /* Back channel attributes */
7312 args
->bc_attrs
.max_rqst_sz
= PAGE_SIZE
;
7313 args
->bc_attrs
.max_resp_sz
= PAGE_SIZE
;
7314 args
->bc_attrs
.max_resp_sz_cached
= 0;
7315 args
->bc_attrs
.max_ops
= NFS4_MAX_BACK_CHANNEL_OPS
;
7316 args
->bc_attrs
.max_reqs
= 1;
7318 dprintk("%s: Back Channel : max_rqst_sz=%u max_resp_sz=%u "
7319 "max_resp_sz_cached=%u max_ops=%u max_reqs=%u\n",
7321 args
->bc_attrs
.max_rqst_sz
, args
->bc_attrs
.max_resp_sz
,
7322 args
->bc_attrs
.max_resp_sz_cached
, args
->bc_attrs
.max_ops
,
7323 args
->bc_attrs
.max_reqs
);
7326 static int nfs4_verify_fore_channel_attrs(struct nfs41_create_session_args
*args
,
7327 struct nfs41_create_session_res
*res
)
7329 struct nfs4_channel_attrs
*sent
= &args
->fc_attrs
;
7330 struct nfs4_channel_attrs
*rcvd
= &res
->fc_attrs
;
7332 if (rcvd
->max_resp_sz
> sent
->max_resp_sz
)
7335 * Our requested max_ops is the minimum we need; we're not
7336 * prepared to break up compounds into smaller pieces than that.
7337 * So, no point even trying to continue if the server won't
7340 if (rcvd
->max_ops
< sent
->max_ops
)
7342 if (rcvd
->max_reqs
== 0)
7344 if (rcvd
->max_reqs
> NFS4_MAX_SLOT_TABLE
)
7345 rcvd
->max_reqs
= NFS4_MAX_SLOT_TABLE
;
7349 static int nfs4_verify_back_channel_attrs(struct nfs41_create_session_args
*args
,
7350 struct nfs41_create_session_res
*res
)
7352 struct nfs4_channel_attrs
*sent
= &args
->bc_attrs
;
7353 struct nfs4_channel_attrs
*rcvd
= &res
->bc_attrs
;
7355 if (!(res
->flags
& SESSION4_BACK_CHAN
))
7357 if (rcvd
->max_rqst_sz
> sent
->max_rqst_sz
)
7359 if (rcvd
->max_resp_sz
< sent
->max_resp_sz
)
7361 if (rcvd
->max_resp_sz_cached
> sent
->max_resp_sz_cached
)
7363 /* These would render the backchannel useless: */
7364 if (rcvd
->max_ops
!= sent
->max_ops
)
7366 if (rcvd
->max_reqs
!= sent
->max_reqs
)
7372 static int nfs4_verify_channel_attrs(struct nfs41_create_session_args
*args
,
7373 struct nfs41_create_session_res
*res
)
7377 ret
= nfs4_verify_fore_channel_attrs(args
, res
);
7380 return nfs4_verify_back_channel_attrs(args
, res
);
7383 static void nfs4_update_session(struct nfs4_session
*session
,
7384 struct nfs41_create_session_res
*res
)
7386 nfs4_copy_sessionid(&session
->sess_id
, &res
->sessionid
);
7387 /* Mark client id and session as being confirmed */
7388 session
->clp
->cl_exchange_flags
|= EXCHGID4_FLAG_CONFIRMED_R
;
7389 set_bit(NFS4_SESSION_ESTABLISHED
, &session
->session_state
);
7390 session
->flags
= res
->flags
;
7391 memcpy(&session
->fc_attrs
, &res
->fc_attrs
, sizeof(session
->fc_attrs
));
7392 if (res
->flags
& SESSION4_BACK_CHAN
)
7393 memcpy(&session
->bc_attrs
, &res
->bc_attrs
,
7394 sizeof(session
->bc_attrs
));
7397 static int _nfs4_proc_create_session(struct nfs_client
*clp
,
7398 struct rpc_cred
*cred
)
7400 struct nfs4_session
*session
= clp
->cl_session
;
7401 struct nfs41_create_session_args args
= {
7403 .clientid
= clp
->cl_clientid
,
7404 .seqid
= clp
->cl_seqid
,
7405 .cb_program
= NFS4_CALLBACK
,
7407 struct nfs41_create_session_res res
;
7409 struct rpc_message msg
= {
7410 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CREATE_SESSION
],
7417 nfs4_init_channel_attrs(&args
);
7418 args
.flags
= (SESSION4_PERSIST
| SESSION4_BACK_CHAN
);
7420 status
= rpc_call_sync(session
->clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
7421 trace_nfs4_create_session(clp
, status
);
7424 /* Verify the session's negotiated channel_attrs values */
7425 status
= nfs4_verify_channel_attrs(&args
, &res
);
7426 /* Increment the clientid slot sequence id */
7427 if (clp
->cl_seqid
== res
.seqid
)
7431 nfs4_update_session(session
, &res
);
7438 * Issues a CREATE_SESSION operation to the server.
7439 * It is the responsibility of the caller to verify the session is
7440 * expired before calling this routine.
7442 int nfs4_proc_create_session(struct nfs_client
*clp
, struct rpc_cred
*cred
)
7446 struct nfs4_session
*session
= clp
->cl_session
;
7448 dprintk("--> %s clp=%p session=%p\n", __func__
, clp
, session
);
7450 status
= _nfs4_proc_create_session(clp
, cred
);
7454 /* Init or reset the session slot tables */
7455 status
= nfs4_setup_session_slot_tables(session
);
7456 dprintk("slot table setup returned %d\n", status
);
7460 ptr
= (unsigned *)&session
->sess_id
.data
[0];
7461 dprintk("%s client>seqid %d sessionid %u:%u:%u:%u\n", __func__
,
7462 clp
->cl_seqid
, ptr
[0], ptr
[1], ptr
[2], ptr
[3]);
7464 dprintk("<-- %s\n", __func__
);
7469 * Issue the over-the-wire RPC DESTROY_SESSION.
7470 * The caller must serialize access to this routine.
7472 int nfs4_proc_destroy_session(struct nfs4_session
*session
,
7473 struct rpc_cred
*cred
)
7475 struct rpc_message msg
= {
7476 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DESTROY_SESSION
],
7477 .rpc_argp
= session
,
7482 dprintk("--> nfs4_proc_destroy_session\n");
7484 /* session is still being setup */
7485 if (!test_and_clear_bit(NFS4_SESSION_ESTABLISHED
, &session
->session_state
))
7488 status
= rpc_call_sync(session
->clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
7489 trace_nfs4_destroy_session(session
->clp
, status
);
7492 dprintk("NFS: Got error %d from the server on DESTROY_SESSION. "
7493 "Session has been destroyed regardless...\n", status
);
7495 dprintk("<-- nfs4_proc_destroy_session\n");
7500 * Renew the cl_session lease.
7502 struct nfs4_sequence_data
{
7503 struct nfs_client
*clp
;
7504 struct nfs4_sequence_args args
;
7505 struct nfs4_sequence_res res
;
7508 static void nfs41_sequence_release(void *data
)
7510 struct nfs4_sequence_data
*calldata
= data
;
7511 struct nfs_client
*clp
= calldata
->clp
;
7513 if (atomic_read(&clp
->cl_count
) > 1)
7514 nfs4_schedule_state_renewal(clp
);
7515 nfs_put_client(clp
);
7519 static int nfs41_sequence_handle_errors(struct rpc_task
*task
, struct nfs_client
*clp
)
7521 switch(task
->tk_status
) {
7522 case -NFS4ERR_DELAY
:
7523 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
7526 nfs4_schedule_lease_recovery(clp
);
7531 static void nfs41_sequence_call_done(struct rpc_task
*task
, void *data
)
7533 struct nfs4_sequence_data
*calldata
= data
;
7534 struct nfs_client
*clp
= calldata
->clp
;
7536 if (!nfs41_sequence_done(task
, task
->tk_msg
.rpc_resp
))
7539 trace_nfs4_sequence(clp
, task
->tk_status
);
7540 if (task
->tk_status
< 0) {
7541 dprintk("%s ERROR %d\n", __func__
, task
->tk_status
);
7542 if (atomic_read(&clp
->cl_count
) == 1)
7545 if (nfs41_sequence_handle_errors(task
, clp
) == -EAGAIN
) {
7546 rpc_restart_call_prepare(task
);
7550 dprintk("%s rpc_cred %p\n", __func__
, task
->tk_msg
.rpc_cred
);
7552 dprintk("<-- %s\n", __func__
);
7555 static void nfs41_sequence_prepare(struct rpc_task
*task
, void *data
)
7557 struct nfs4_sequence_data
*calldata
= data
;
7558 struct nfs_client
*clp
= calldata
->clp
;
7559 struct nfs4_sequence_args
*args
;
7560 struct nfs4_sequence_res
*res
;
7562 args
= task
->tk_msg
.rpc_argp
;
7563 res
= task
->tk_msg
.rpc_resp
;
7565 nfs41_setup_sequence(clp
->cl_session
, args
, res
, task
);
7568 static const struct rpc_call_ops nfs41_sequence_ops
= {
7569 .rpc_call_done
= nfs41_sequence_call_done
,
7570 .rpc_call_prepare
= nfs41_sequence_prepare
,
7571 .rpc_release
= nfs41_sequence_release
,
7574 static struct rpc_task
*_nfs41_proc_sequence(struct nfs_client
*clp
,
7575 struct rpc_cred
*cred
,
7578 struct nfs4_sequence_data
*calldata
;
7579 struct rpc_message msg
= {
7580 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SEQUENCE
],
7583 struct rpc_task_setup task_setup_data
= {
7584 .rpc_client
= clp
->cl_rpcclient
,
7585 .rpc_message
= &msg
,
7586 .callback_ops
= &nfs41_sequence_ops
,
7587 .flags
= RPC_TASK_ASYNC
| RPC_TASK_TIMEOUT
,
7590 if (!atomic_inc_not_zero(&clp
->cl_count
))
7591 return ERR_PTR(-EIO
);
7592 calldata
= kzalloc(sizeof(*calldata
), GFP_NOFS
);
7593 if (calldata
== NULL
) {
7594 nfs_put_client(clp
);
7595 return ERR_PTR(-ENOMEM
);
7597 nfs4_init_sequence(&calldata
->args
, &calldata
->res
, 0);
7599 nfs4_set_sequence_privileged(&calldata
->args
);
7600 msg
.rpc_argp
= &calldata
->args
;
7601 msg
.rpc_resp
= &calldata
->res
;
7602 calldata
->clp
= clp
;
7603 task_setup_data
.callback_data
= calldata
;
7605 return rpc_run_task(&task_setup_data
);
7608 static int nfs41_proc_async_sequence(struct nfs_client
*clp
, struct rpc_cred
*cred
, unsigned renew_flags
)
7610 struct rpc_task
*task
;
7613 if ((renew_flags
& NFS4_RENEW_TIMEOUT
) == 0)
7615 task
= _nfs41_proc_sequence(clp
, cred
, false);
7617 ret
= PTR_ERR(task
);
7619 rpc_put_task_async(task
);
7620 dprintk("<-- %s status=%d\n", __func__
, ret
);
7624 static int nfs4_proc_sequence(struct nfs_client
*clp
, struct rpc_cred
*cred
)
7626 struct rpc_task
*task
;
7629 task
= _nfs41_proc_sequence(clp
, cred
, true);
7631 ret
= PTR_ERR(task
);
7634 ret
= rpc_wait_for_completion_task(task
);
7636 ret
= task
->tk_status
;
7639 dprintk("<-- %s status=%d\n", __func__
, ret
);
7643 struct nfs4_reclaim_complete_data
{
7644 struct nfs_client
*clp
;
7645 struct nfs41_reclaim_complete_args arg
;
7646 struct nfs41_reclaim_complete_res res
;
7649 static void nfs4_reclaim_complete_prepare(struct rpc_task
*task
, void *data
)
7651 struct nfs4_reclaim_complete_data
*calldata
= data
;
7653 nfs41_setup_sequence(calldata
->clp
->cl_session
,
7654 &calldata
->arg
.seq_args
,
7655 &calldata
->res
.seq_res
,
7659 static int nfs41_reclaim_complete_handle_errors(struct rpc_task
*task
, struct nfs_client
*clp
)
7661 switch(task
->tk_status
) {
7663 case -NFS4ERR_COMPLETE_ALREADY
:
7664 case -NFS4ERR_WRONG_CRED
: /* What to do here? */
7666 case -NFS4ERR_DELAY
:
7667 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
7669 case -NFS4ERR_RETRY_UNCACHED_REP
:
7672 nfs4_schedule_lease_recovery(clp
);
7677 static void nfs4_reclaim_complete_done(struct rpc_task
*task
, void *data
)
7679 struct nfs4_reclaim_complete_data
*calldata
= data
;
7680 struct nfs_client
*clp
= calldata
->clp
;
7681 struct nfs4_sequence_res
*res
= &calldata
->res
.seq_res
;
7683 dprintk("--> %s\n", __func__
);
7684 if (!nfs41_sequence_done(task
, res
))
7687 trace_nfs4_reclaim_complete(clp
, task
->tk_status
);
7688 if (nfs41_reclaim_complete_handle_errors(task
, clp
) == -EAGAIN
) {
7689 rpc_restart_call_prepare(task
);
7692 dprintk("<-- %s\n", __func__
);
7695 static void nfs4_free_reclaim_complete_data(void *data
)
7697 struct nfs4_reclaim_complete_data
*calldata
= data
;
7702 static const struct rpc_call_ops nfs4_reclaim_complete_call_ops
= {
7703 .rpc_call_prepare
= nfs4_reclaim_complete_prepare
,
7704 .rpc_call_done
= nfs4_reclaim_complete_done
,
7705 .rpc_release
= nfs4_free_reclaim_complete_data
,
7709 * Issue a global reclaim complete.
7711 static int nfs41_proc_reclaim_complete(struct nfs_client
*clp
,
7712 struct rpc_cred
*cred
)
7714 struct nfs4_reclaim_complete_data
*calldata
;
7715 struct rpc_task
*task
;
7716 struct rpc_message msg
= {
7717 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RECLAIM_COMPLETE
],
7720 struct rpc_task_setup task_setup_data
= {
7721 .rpc_client
= clp
->cl_rpcclient
,
7722 .rpc_message
= &msg
,
7723 .callback_ops
= &nfs4_reclaim_complete_call_ops
,
7724 .flags
= RPC_TASK_ASYNC
,
7726 int status
= -ENOMEM
;
7728 dprintk("--> %s\n", __func__
);
7729 calldata
= kzalloc(sizeof(*calldata
), GFP_NOFS
);
7730 if (calldata
== NULL
)
7732 calldata
->clp
= clp
;
7733 calldata
->arg
.one_fs
= 0;
7735 nfs4_init_sequence(&calldata
->arg
.seq_args
, &calldata
->res
.seq_res
, 0);
7736 nfs4_set_sequence_privileged(&calldata
->arg
.seq_args
);
7737 msg
.rpc_argp
= &calldata
->arg
;
7738 msg
.rpc_resp
= &calldata
->res
;
7739 task_setup_data
.callback_data
= calldata
;
7740 task
= rpc_run_task(&task_setup_data
);
7742 status
= PTR_ERR(task
);
7745 status
= nfs4_wait_for_completion_rpc_task(task
);
7747 status
= task
->tk_status
;
7751 dprintk("<-- %s status=%d\n", __func__
, status
);
7756 nfs4_layoutget_prepare(struct rpc_task
*task
, void *calldata
)
7758 struct nfs4_layoutget
*lgp
= calldata
;
7759 struct nfs_server
*server
= NFS_SERVER(lgp
->args
.inode
);
7760 struct nfs4_session
*session
= nfs4_get_session(server
);
7762 dprintk("--> %s\n", __func__
);
7763 /* Note the is a race here, where a CB_LAYOUTRECALL can come in
7764 * right now covering the LAYOUTGET we are about to send.
7765 * However, that is not so catastrophic, and there seems
7766 * to be no way to prevent it completely.
7768 if (nfs41_setup_sequence(session
, &lgp
->args
.seq_args
,
7769 &lgp
->res
.seq_res
, task
))
7771 if (pnfs_choose_layoutget_stateid(&lgp
->args
.stateid
,
7772 NFS_I(lgp
->args
.inode
)->layout
,
7774 lgp
->args
.ctx
->state
)) {
7775 rpc_exit(task
, NFS4_OK
);
7779 static void nfs4_layoutget_done(struct rpc_task
*task
, void *calldata
)
7781 struct nfs4_layoutget
*lgp
= calldata
;
7782 struct inode
*inode
= lgp
->args
.inode
;
7783 struct nfs_server
*server
= NFS_SERVER(inode
);
7784 struct pnfs_layout_hdr
*lo
;
7785 struct nfs4_state
*state
= NULL
;
7786 unsigned long timeo
, now
, giveup
;
7788 dprintk("--> %s tk_status => %d\n", __func__
, -task
->tk_status
);
7790 if (!nfs41_sequence_done(task
, &lgp
->res
.seq_res
))
7793 switch (task
->tk_status
) {
7797 * NFS4ERR_BADLAYOUT means the MDS cannot return a layout of
7798 * length lgp->args.minlength != 0 (see RFC5661 section 18.43.3).
7800 case -NFS4ERR_BADLAYOUT
:
7803 * NFS4ERR_LAYOUTTRYLATER is a conflict with another client
7804 * (or clients) writing to the same RAID stripe except when
7805 * the minlength argument is 0 (see RFC5661 section 18.43.3).
7807 case -NFS4ERR_LAYOUTTRYLATER
:
7808 if (lgp
->args
.minlength
== 0)
7811 * NFS4ERR_RECALLCONFLICT is when conflict with self (must recall
7812 * existing layout before getting a new one).
7814 case -NFS4ERR_RECALLCONFLICT
:
7815 timeo
= rpc_get_timeout(task
->tk_client
);
7816 giveup
= lgp
->args
.timestamp
+ timeo
;
7818 if (time_after(giveup
, now
)) {
7819 unsigned long delay
;
7822 * - Not less then NFS4_POLL_RETRY_MIN.
7823 * - One last time a jiffie before we give up
7824 * - exponential backoff (time_now minus start_attempt)
7826 delay
= max_t(unsigned long, NFS4_POLL_RETRY_MIN
,
7827 min((giveup
- now
- 1),
7828 now
- lgp
->args
.timestamp
));
7830 dprintk("%s: NFS4ERR_RECALLCONFLICT waiting %lu\n",
7832 rpc_delay(task
, delay
);
7833 /* Do not call nfs4_async_handle_error() */
7837 case -NFS4ERR_EXPIRED
:
7838 case -NFS4ERR_BAD_STATEID
:
7839 spin_lock(&inode
->i_lock
);
7840 if (nfs4_stateid_match(&lgp
->args
.stateid
,
7841 &lgp
->args
.ctx
->state
->stateid
)) {
7842 spin_unlock(&inode
->i_lock
);
7843 /* If the open stateid was bad, then recover it. */
7844 state
= lgp
->args
.ctx
->state
;
7847 lo
= NFS_I(inode
)->layout
;
7848 if (lo
&& nfs4_stateid_match(&lgp
->args
.stateid
,
7849 &lo
->plh_stateid
)) {
7853 * Mark the bad layout state as invalid, then retry
7854 * with the current stateid.
7856 set_bit(NFS_LAYOUT_INVALID_STID
, &lo
->plh_flags
);
7857 pnfs_mark_matching_lsegs_invalid(lo
, &head
, NULL
);
7858 spin_unlock(&inode
->i_lock
);
7859 pnfs_free_lseg_list(&head
);
7861 spin_unlock(&inode
->i_lock
);
7864 if (nfs4_async_handle_error(task
, server
, state
, NULL
) == -EAGAIN
)
7867 dprintk("<-- %s\n", __func__
);
7870 task
->tk_status
= 0;
7871 rpc_restart_call_prepare(task
);
7874 task
->tk_status
= -EOVERFLOW
;
7878 static size_t max_response_pages(struct nfs_server
*server
)
7880 u32 max_resp_sz
= server
->nfs_client
->cl_session
->fc_attrs
.max_resp_sz
;
7881 return nfs_page_array_len(0, max_resp_sz
);
7884 static void nfs4_free_pages(struct page
**pages
, size_t size
)
7891 for (i
= 0; i
< size
; i
++) {
7894 __free_page(pages
[i
]);
7899 static struct page
**nfs4_alloc_pages(size_t size
, gfp_t gfp_flags
)
7901 struct page
**pages
;
7904 pages
= kcalloc(size
, sizeof(struct page
*), gfp_flags
);
7906 dprintk("%s: can't alloc array of %zu pages\n", __func__
, size
);
7910 for (i
= 0; i
< size
; i
++) {
7911 pages
[i
] = alloc_page(gfp_flags
);
7913 dprintk("%s: failed to allocate page\n", __func__
);
7914 nfs4_free_pages(pages
, size
);
7922 static void nfs4_layoutget_release(void *calldata
)
7924 struct nfs4_layoutget
*lgp
= calldata
;
7925 struct inode
*inode
= lgp
->args
.inode
;
7926 struct nfs_server
*server
= NFS_SERVER(inode
);
7927 size_t max_pages
= max_response_pages(server
);
7929 dprintk("--> %s\n", __func__
);
7930 nfs4_free_pages(lgp
->args
.layout
.pages
, max_pages
);
7931 pnfs_put_layout_hdr(NFS_I(inode
)->layout
);
7932 put_nfs_open_context(lgp
->args
.ctx
);
7934 dprintk("<-- %s\n", __func__
);
7937 static const struct rpc_call_ops nfs4_layoutget_call_ops
= {
7938 .rpc_call_prepare
= nfs4_layoutget_prepare
,
7939 .rpc_call_done
= nfs4_layoutget_done
,
7940 .rpc_release
= nfs4_layoutget_release
,
7943 struct pnfs_layout_segment
*
7944 nfs4_proc_layoutget(struct nfs4_layoutget
*lgp
, gfp_t gfp_flags
)
7946 struct inode
*inode
= lgp
->args
.inode
;
7947 struct nfs_server
*server
= NFS_SERVER(inode
);
7948 size_t max_pages
= max_response_pages(server
);
7949 struct rpc_task
*task
;
7950 struct rpc_message msg
= {
7951 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LAYOUTGET
],
7952 .rpc_argp
= &lgp
->args
,
7953 .rpc_resp
= &lgp
->res
,
7954 .rpc_cred
= lgp
->cred
,
7956 struct rpc_task_setup task_setup_data
= {
7957 .rpc_client
= server
->client
,
7958 .rpc_message
= &msg
,
7959 .callback_ops
= &nfs4_layoutget_call_ops
,
7960 .callback_data
= lgp
,
7961 .flags
= RPC_TASK_ASYNC
,
7963 struct pnfs_layout_segment
*lseg
= NULL
;
7966 dprintk("--> %s\n", __func__
);
7968 /* nfs4_layoutget_release calls pnfs_put_layout_hdr */
7969 pnfs_get_layout_hdr(NFS_I(inode
)->layout
);
7971 lgp
->args
.layout
.pages
= nfs4_alloc_pages(max_pages
, gfp_flags
);
7972 if (!lgp
->args
.layout
.pages
) {
7973 nfs4_layoutget_release(lgp
);
7974 return ERR_PTR(-ENOMEM
);
7976 lgp
->args
.layout
.pglen
= max_pages
* PAGE_SIZE
;
7977 lgp
->args
.timestamp
= jiffies
;
7979 lgp
->res
.layoutp
= &lgp
->args
.layout
;
7980 lgp
->res
.seq_res
.sr_slot
= NULL
;
7981 nfs4_init_sequence(&lgp
->args
.seq_args
, &lgp
->res
.seq_res
, 0);
7983 task
= rpc_run_task(&task_setup_data
);
7985 return ERR_CAST(task
);
7986 status
= nfs4_wait_for_completion_rpc_task(task
);
7988 status
= task
->tk_status
;
7989 trace_nfs4_layoutget(lgp
->args
.ctx
,
7993 /* if layoutp->len is 0, nfs4_layoutget_prepare called rpc_exit */
7994 if (status
== 0 && lgp
->res
.layoutp
->len
)
7995 lseg
= pnfs_layout_process(lgp
);
7997 dprintk("<-- %s status=%d\n", __func__
, status
);
7999 return ERR_PTR(status
);
8004 nfs4_layoutreturn_prepare(struct rpc_task
*task
, void *calldata
)
8006 struct nfs4_layoutreturn
*lrp
= calldata
;
8008 dprintk("--> %s\n", __func__
);
8009 nfs41_setup_sequence(lrp
->clp
->cl_session
,
8010 &lrp
->args
.seq_args
,
8015 static void nfs4_layoutreturn_done(struct rpc_task
*task
, void *calldata
)
8017 struct nfs4_layoutreturn
*lrp
= calldata
;
8018 struct nfs_server
*server
;
8020 dprintk("--> %s\n", __func__
);
8022 if (!nfs41_sequence_done(task
, &lrp
->res
.seq_res
))
8025 server
= NFS_SERVER(lrp
->args
.inode
);
8026 switch (task
->tk_status
) {
8028 task
->tk_status
= 0;
8031 case -NFS4ERR_DELAY
:
8032 if (nfs4_async_handle_error(task
, server
, NULL
, NULL
) != -EAGAIN
)
8034 rpc_restart_call_prepare(task
);
8037 dprintk("<-- %s\n", __func__
);
8040 static void nfs4_layoutreturn_release(void *calldata
)
8042 struct nfs4_layoutreturn
*lrp
= calldata
;
8043 struct pnfs_layout_hdr
*lo
= lrp
->args
.layout
;
8046 dprintk("--> %s\n", __func__
);
8047 spin_lock(&lo
->plh_inode
->i_lock
);
8048 if (lrp
->res
.lrs_present
)
8049 pnfs_set_layout_stateid(lo
, &lrp
->res
.stateid
, true);
8050 pnfs_mark_matching_lsegs_invalid(lo
, &freeme
, &lrp
->args
.range
);
8051 pnfs_clear_layoutreturn_waitbit(lo
);
8052 lo
->plh_block_lgets
--;
8053 spin_unlock(&lo
->plh_inode
->i_lock
);
8054 pnfs_free_lseg_list(&freeme
);
8055 pnfs_put_layout_hdr(lrp
->args
.layout
);
8056 nfs_iput_and_deactive(lrp
->inode
);
8058 dprintk("<-- %s\n", __func__
);
8061 static const struct rpc_call_ops nfs4_layoutreturn_call_ops
= {
8062 .rpc_call_prepare
= nfs4_layoutreturn_prepare
,
8063 .rpc_call_done
= nfs4_layoutreturn_done
,
8064 .rpc_release
= nfs4_layoutreturn_release
,
8067 int nfs4_proc_layoutreturn(struct nfs4_layoutreturn
*lrp
, bool sync
)
8069 struct rpc_task
*task
;
8070 struct rpc_message msg
= {
8071 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LAYOUTRETURN
],
8072 .rpc_argp
= &lrp
->args
,
8073 .rpc_resp
= &lrp
->res
,
8074 .rpc_cred
= lrp
->cred
,
8076 struct rpc_task_setup task_setup_data
= {
8077 .rpc_client
= NFS_SERVER(lrp
->args
.inode
)->client
,
8078 .rpc_message
= &msg
,
8079 .callback_ops
= &nfs4_layoutreturn_call_ops
,
8080 .callback_data
= lrp
,
8084 dprintk("--> %s\n", __func__
);
8086 lrp
->inode
= nfs_igrab_and_active(lrp
->args
.inode
);
8088 nfs4_layoutreturn_release(lrp
);
8091 task_setup_data
.flags
|= RPC_TASK_ASYNC
;
8093 nfs4_init_sequence(&lrp
->args
.seq_args
, &lrp
->res
.seq_res
, 1);
8094 task
= rpc_run_task(&task_setup_data
);
8096 return PTR_ERR(task
);
8098 status
= task
->tk_status
;
8099 trace_nfs4_layoutreturn(lrp
->args
.inode
, status
);
8100 dprintk("<-- %s status=%d\n", __func__
, status
);
8106 _nfs4_proc_getdeviceinfo(struct nfs_server
*server
,
8107 struct pnfs_device
*pdev
,
8108 struct rpc_cred
*cred
)
8110 struct nfs4_getdeviceinfo_args args
= {
8112 .notify_types
= NOTIFY_DEVICEID4_CHANGE
|
8113 NOTIFY_DEVICEID4_DELETE
,
8115 struct nfs4_getdeviceinfo_res res
= {
8118 struct rpc_message msg
= {
8119 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETDEVICEINFO
],
8126 dprintk("--> %s\n", __func__
);
8127 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
8128 if (res
.notification
& ~args
.notify_types
)
8129 dprintk("%s: unsupported notification\n", __func__
);
8130 if (res
.notification
!= args
.notify_types
)
8133 dprintk("<-- %s status=%d\n", __func__
, status
);
8138 int nfs4_proc_getdeviceinfo(struct nfs_server
*server
,
8139 struct pnfs_device
*pdev
,
8140 struct rpc_cred
*cred
)
8142 struct nfs4_exception exception
= { };
8146 err
= nfs4_handle_exception(server
,
8147 _nfs4_proc_getdeviceinfo(server
, pdev
, cred
),
8149 } while (exception
.retry
);
8152 EXPORT_SYMBOL_GPL(nfs4_proc_getdeviceinfo
);
8154 static void nfs4_layoutcommit_prepare(struct rpc_task
*task
, void *calldata
)
8156 struct nfs4_layoutcommit_data
*data
= calldata
;
8157 struct nfs_server
*server
= NFS_SERVER(data
->args
.inode
);
8158 struct nfs4_session
*session
= nfs4_get_session(server
);
8160 nfs41_setup_sequence(session
,
8161 &data
->args
.seq_args
,
8167 nfs4_layoutcommit_done(struct rpc_task
*task
, void *calldata
)
8169 struct nfs4_layoutcommit_data
*data
= calldata
;
8170 struct nfs_server
*server
= NFS_SERVER(data
->args
.inode
);
8172 if (!nfs41_sequence_done(task
, &data
->res
.seq_res
))
8175 switch (task
->tk_status
) { /* Just ignore these failures */
8176 case -NFS4ERR_DELEG_REVOKED
: /* layout was recalled */
8177 case -NFS4ERR_BADIOMODE
: /* no IOMODE_RW layout for range */
8178 case -NFS4ERR_BADLAYOUT
: /* no layout */
8179 case -NFS4ERR_GRACE
: /* loca_recalim always false */
8180 task
->tk_status
= 0;
8184 if (nfs4_async_handle_error(task
, server
, NULL
, NULL
) == -EAGAIN
) {
8185 rpc_restart_call_prepare(task
);
8191 static void nfs4_layoutcommit_release(void *calldata
)
8193 struct nfs4_layoutcommit_data
*data
= calldata
;
8195 pnfs_cleanup_layoutcommit(data
);
8196 nfs_post_op_update_inode_force_wcc(data
->args
.inode
,
8198 put_rpccred(data
->cred
);
8199 nfs_iput_and_deactive(data
->inode
);
8203 static const struct rpc_call_ops nfs4_layoutcommit_ops
= {
8204 .rpc_call_prepare
= nfs4_layoutcommit_prepare
,
8205 .rpc_call_done
= nfs4_layoutcommit_done
,
8206 .rpc_release
= nfs4_layoutcommit_release
,
8210 nfs4_proc_layoutcommit(struct nfs4_layoutcommit_data
*data
, bool sync
)
8212 struct rpc_message msg
= {
8213 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LAYOUTCOMMIT
],
8214 .rpc_argp
= &data
->args
,
8215 .rpc_resp
= &data
->res
,
8216 .rpc_cred
= data
->cred
,
8218 struct rpc_task_setup task_setup_data
= {
8219 .task
= &data
->task
,
8220 .rpc_client
= NFS_CLIENT(data
->args
.inode
),
8221 .rpc_message
= &msg
,
8222 .callback_ops
= &nfs4_layoutcommit_ops
,
8223 .callback_data
= data
,
8225 struct rpc_task
*task
;
8228 dprintk("NFS: initiating layoutcommit call. sync %d "
8229 "lbw: %llu inode %lu\n", sync
,
8230 data
->args
.lastbytewritten
,
8231 data
->args
.inode
->i_ino
);
8234 data
->inode
= nfs_igrab_and_active(data
->args
.inode
);
8235 if (data
->inode
== NULL
) {
8236 nfs4_layoutcommit_release(data
);
8239 task_setup_data
.flags
= RPC_TASK_ASYNC
;
8241 nfs4_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
8242 task
= rpc_run_task(&task_setup_data
);
8244 return PTR_ERR(task
);
8246 status
= task
->tk_status
;
8247 trace_nfs4_layoutcommit(data
->args
.inode
, status
);
8248 dprintk("%s: status %d\n", __func__
, status
);
8254 * Use the state managment nfs_client cl_rpcclient, which uses krb5i (if
8255 * possible) as per RFC3530bis and RFC5661 Security Considerations sections
8258 _nfs41_proc_secinfo_no_name(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
8259 struct nfs_fsinfo
*info
,
8260 struct nfs4_secinfo_flavors
*flavors
, bool use_integrity
)
8262 struct nfs41_secinfo_no_name_args args
= {
8263 .style
= SECINFO_STYLE_CURRENT_FH
,
8265 struct nfs4_secinfo_res res
= {
8268 struct rpc_message msg
= {
8269 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SECINFO_NO_NAME
],
8273 struct rpc_clnt
*clnt
= server
->client
;
8274 struct rpc_cred
*cred
= NULL
;
8277 if (use_integrity
) {
8278 clnt
= server
->nfs_client
->cl_rpcclient
;
8279 cred
= nfs4_get_clid_cred(server
->nfs_client
);
8280 msg
.rpc_cred
= cred
;
8283 dprintk("--> %s\n", __func__
);
8284 status
= nfs4_call_sync(clnt
, server
, &msg
, &args
.seq_args
,
8286 dprintk("<-- %s status=%d\n", __func__
, status
);
8295 nfs41_proc_secinfo_no_name(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
8296 struct nfs_fsinfo
*info
, struct nfs4_secinfo_flavors
*flavors
)
8298 struct nfs4_exception exception
= { };
8301 /* first try using integrity protection */
8302 err
= -NFS4ERR_WRONGSEC
;
8304 /* try to use integrity protection with machine cred */
8305 if (_nfs4_is_integrity_protected(server
->nfs_client
))
8306 err
= _nfs41_proc_secinfo_no_name(server
, fhandle
, info
,
8310 * if unable to use integrity protection, or SECINFO with
8311 * integrity protection returns NFS4ERR_WRONGSEC (which is
8312 * disallowed by spec, but exists in deployed servers) use
8313 * the current filesystem's rpc_client and the user cred.
8315 if (err
== -NFS4ERR_WRONGSEC
)
8316 err
= _nfs41_proc_secinfo_no_name(server
, fhandle
, info
,
8321 case -NFS4ERR_WRONGSEC
:
8325 err
= nfs4_handle_exception(server
, err
, &exception
);
8327 } while (exception
.retry
);
8333 nfs41_find_root_sec(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
8334 struct nfs_fsinfo
*info
)
8338 rpc_authflavor_t flavor
= RPC_AUTH_MAXFLAVOR
;
8339 struct nfs4_secinfo_flavors
*flavors
;
8340 struct nfs4_secinfo4
*secinfo
;
8343 page
= alloc_page(GFP_KERNEL
);
8349 flavors
= page_address(page
);
8350 err
= nfs41_proc_secinfo_no_name(server
, fhandle
, info
, flavors
);
8353 * Fall back on "guess and check" method if
8354 * the server doesn't support SECINFO_NO_NAME
8356 if (err
== -NFS4ERR_WRONGSEC
|| err
== -ENOTSUPP
) {
8357 err
= nfs4_find_root_sec(server
, fhandle
, info
);
8363 for (i
= 0; i
< flavors
->num_flavors
; i
++) {
8364 secinfo
= &flavors
->flavors
[i
];
8366 switch (secinfo
->flavor
) {
8370 flavor
= rpcauth_get_pseudoflavor(secinfo
->flavor
,
8371 &secinfo
->flavor_info
);
8374 flavor
= RPC_AUTH_MAXFLAVOR
;
8378 if (!nfs_auth_info_match(&server
->auth_info
, flavor
))
8379 flavor
= RPC_AUTH_MAXFLAVOR
;
8381 if (flavor
!= RPC_AUTH_MAXFLAVOR
) {
8382 err
= nfs4_lookup_root_sec(server
, fhandle
,
8389 if (flavor
== RPC_AUTH_MAXFLAVOR
)
8400 static int _nfs41_test_stateid(struct nfs_server
*server
,
8401 nfs4_stateid
*stateid
,
8402 struct rpc_cred
*cred
)
8405 struct nfs41_test_stateid_args args
= {
8408 struct nfs41_test_stateid_res res
;
8409 struct rpc_message msg
= {
8410 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_TEST_STATEID
],
8415 struct rpc_clnt
*rpc_client
= server
->client
;
8417 nfs4_state_protect(server
->nfs_client
, NFS_SP4_MACH_CRED_STATEID
,
8420 dprintk("NFS call test_stateid %p\n", stateid
);
8421 nfs4_init_sequence(&args
.seq_args
, &res
.seq_res
, 0);
8422 nfs4_set_sequence_privileged(&args
.seq_args
);
8423 status
= nfs4_call_sync_sequence(rpc_client
, server
, &msg
,
8424 &args
.seq_args
, &res
.seq_res
);
8425 if (status
!= NFS_OK
) {
8426 dprintk("NFS reply test_stateid: failed, %d\n", status
);
8429 dprintk("NFS reply test_stateid: succeeded, %d\n", -res
.status
);
8434 * nfs41_test_stateid - perform a TEST_STATEID operation
8436 * @server: server / transport on which to perform the operation
8437 * @stateid: state ID to test
8440 * Returns NFS_OK if the server recognizes that "stateid" is valid.
8441 * Otherwise a negative NFS4ERR value is returned if the operation
8442 * failed or the state ID is not currently valid.
8444 static int nfs41_test_stateid(struct nfs_server
*server
,
8445 nfs4_stateid
*stateid
,
8446 struct rpc_cred
*cred
)
8448 struct nfs4_exception exception
= { };
8451 err
= _nfs41_test_stateid(server
, stateid
, cred
);
8452 if (err
!= -NFS4ERR_DELAY
)
8454 nfs4_handle_exception(server
, err
, &exception
);
8455 } while (exception
.retry
);
8459 struct nfs_free_stateid_data
{
8460 struct nfs_server
*server
;
8461 struct nfs41_free_stateid_args args
;
8462 struct nfs41_free_stateid_res res
;
8465 static void nfs41_free_stateid_prepare(struct rpc_task
*task
, void *calldata
)
8467 struct nfs_free_stateid_data
*data
= calldata
;
8468 nfs41_setup_sequence(nfs4_get_session(data
->server
),
8469 &data
->args
.seq_args
,
8474 static void nfs41_free_stateid_done(struct rpc_task
*task
, void *calldata
)
8476 struct nfs_free_stateid_data
*data
= calldata
;
8478 nfs41_sequence_done(task
, &data
->res
.seq_res
);
8480 switch (task
->tk_status
) {
8481 case -NFS4ERR_DELAY
:
8482 if (nfs4_async_handle_error(task
, data
->server
, NULL
, NULL
) == -EAGAIN
)
8483 rpc_restart_call_prepare(task
);
8487 static void nfs41_free_stateid_release(void *calldata
)
8492 static const struct rpc_call_ops nfs41_free_stateid_ops
= {
8493 .rpc_call_prepare
= nfs41_free_stateid_prepare
,
8494 .rpc_call_done
= nfs41_free_stateid_done
,
8495 .rpc_release
= nfs41_free_stateid_release
,
8498 static struct rpc_task
*_nfs41_free_stateid(struct nfs_server
*server
,
8499 nfs4_stateid
*stateid
,
8500 struct rpc_cred
*cred
,
8503 struct rpc_message msg
= {
8504 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FREE_STATEID
],
8507 struct rpc_task_setup task_setup
= {
8508 .rpc_client
= server
->client
,
8509 .rpc_message
= &msg
,
8510 .callback_ops
= &nfs41_free_stateid_ops
,
8511 .flags
= RPC_TASK_ASYNC
,
8513 struct nfs_free_stateid_data
*data
;
8515 nfs4_state_protect(server
->nfs_client
, NFS_SP4_MACH_CRED_STATEID
,
8516 &task_setup
.rpc_client
, &msg
);
8518 dprintk("NFS call free_stateid %p\n", stateid
);
8519 data
= kmalloc(sizeof(*data
), GFP_NOFS
);
8521 return ERR_PTR(-ENOMEM
);
8522 data
->server
= server
;
8523 nfs4_stateid_copy(&data
->args
.stateid
, stateid
);
8525 task_setup
.callback_data
= data
;
8527 msg
.rpc_argp
= &data
->args
;
8528 msg
.rpc_resp
= &data
->res
;
8529 nfs4_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 0);
8531 nfs4_set_sequence_privileged(&data
->args
.seq_args
);
8533 return rpc_run_task(&task_setup
);
8537 * nfs41_free_stateid - perform a FREE_STATEID operation
8539 * @server: server / transport on which to perform the operation
8540 * @stateid: state ID to release
8543 * Returns NFS_OK if the server freed "stateid". Otherwise a
8544 * negative NFS4ERR value is returned.
8546 static int nfs41_free_stateid(struct nfs_server
*server
,
8547 nfs4_stateid
*stateid
,
8548 struct rpc_cred
*cred
)
8550 struct rpc_task
*task
;
8553 task
= _nfs41_free_stateid(server
, stateid
, cred
, true);
8555 return PTR_ERR(task
);
8556 ret
= rpc_wait_for_completion_task(task
);
8558 ret
= task
->tk_status
;
8564 nfs41_free_lock_state(struct nfs_server
*server
, struct nfs4_lock_state
*lsp
)
8566 struct rpc_task
*task
;
8567 struct rpc_cred
*cred
= lsp
->ls_state
->owner
->so_cred
;
8569 task
= _nfs41_free_stateid(server
, &lsp
->ls_stateid
, cred
, false);
8570 nfs4_free_lock_state(server
, lsp
);
8576 static bool nfs41_match_stateid(const nfs4_stateid
*s1
,
8577 const nfs4_stateid
*s2
)
8579 if (memcmp(s1
->other
, s2
->other
, sizeof(s1
->other
)) != 0)
8582 if (s1
->seqid
== s2
->seqid
)
8584 if (s1
->seqid
== 0 || s2
->seqid
== 0)
8590 #endif /* CONFIG_NFS_V4_1 */
8592 static bool nfs4_match_stateid(const nfs4_stateid
*s1
,
8593 const nfs4_stateid
*s2
)
8595 return nfs4_stateid_match(s1
, s2
);
8599 static const struct nfs4_state_recovery_ops nfs40_reboot_recovery_ops
= {
8600 .owner_flag_bit
= NFS_OWNER_RECLAIM_REBOOT
,
8601 .state_flag_bit
= NFS_STATE_RECLAIM_REBOOT
,
8602 .recover_open
= nfs4_open_reclaim
,
8603 .recover_lock
= nfs4_lock_reclaim
,
8604 .establish_clid
= nfs4_init_clientid
,
8605 .detect_trunking
= nfs40_discover_server_trunking
,
8608 #if defined(CONFIG_NFS_V4_1)
8609 static const struct nfs4_state_recovery_ops nfs41_reboot_recovery_ops
= {
8610 .owner_flag_bit
= NFS_OWNER_RECLAIM_REBOOT
,
8611 .state_flag_bit
= NFS_STATE_RECLAIM_REBOOT
,
8612 .recover_open
= nfs4_open_reclaim
,
8613 .recover_lock
= nfs4_lock_reclaim
,
8614 .establish_clid
= nfs41_init_clientid
,
8615 .reclaim_complete
= nfs41_proc_reclaim_complete
,
8616 .detect_trunking
= nfs41_discover_server_trunking
,
8618 #endif /* CONFIG_NFS_V4_1 */
8620 static const struct nfs4_state_recovery_ops nfs40_nograce_recovery_ops
= {
8621 .owner_flag_bit
= NFS_OWNER_RECLAIM_NOGRACE
,
8622 .state_flag_bit
= NFS_STATE_RECLAIM_NOGRACE
,
8623 .recover_open
= nfs40_open_expired
,
8624 .recover_lock
= nfs4_lock_expired
,
8625 .establish_clid
= nfs4_init_clientid
,
8628 #if defined(CONFIG_NFS_V4_1)
8629 static const struct nfs4_state_recovery_ops nfs41_nograce_recovery_ops
= {
8630 .owner_flag_bit
= NFS_OWNER_RECLAIM_NOGRACE
,
8631 .state_flag_bit
= NFS_STATE_RECLAIM_NOGRACE
,
8632 .recover_open
= nfs41_open_expired
,
8633 .recover_lock
= nfs41_lock_expired
,
8634 .establish_clid
= nfs41_init_clientid
,
8636 #endif /* CONFIG_NFS_V4_1 */
8638 static const struct nfs4_state_maintenance_ops nfs40_state_renewal_ops
= {
8639 .sched_state_renewal
= nfs4_proc_async_renew
,
8640 .get_state_renewal_cred_locked
= nfs4_get_renew_cred_locked
,
8641 .renew_lease
= nfs4_proc_renew
,
8644 #if defined(CONFIG_NFS_V4_1)
8645 static const struct nfs4_state_maintenance_ops nfs41_state_renewal_ops
= {
8646 .sched_state_renewal
= nfs41_proc_async_sequence
,
8647 .get_state_renewal_cred_locked
= nfs4_get_machine_cred_locked
,
8648 .renew_lease
= nfs4_proc_sequence
,
8652 static const struct nfs4_mig_recovery_ops nfs40_mig_recovery_ops
= {
8653 .get_locations
= _nfs40_proc_get_locations
,
8654 .fsid_present
= _nfs40_proc_fsid_present
,
8657 #if defined(CONFIG_NFS_V4_1)
8658 static const struct nfs4_mig_recovery_ops nfs41_mig_recovery_ops
= {
8659 .get_locations
= _nfs41_proc_get_locations
,
8660 .fsid_present
= _nfs41_proc_fsid_present
,
8662 #endif /* CONFIG_NFS_V4_1 */
8664 static const struct nfs4_minor_version_ops nfs_v4_0_minor_ops
= {
8666 .init_caps
= NFS_CAP_READDIRPLUS
8667 | NFS_CAP_ATOMIC_OPEN
8668 | NFS_CAP_POSIX_LOCK
,
8669 .init_client
= nfs40_init_client
,
8670 .shutdown_client
= nfs40_shutdown_client
,
8671 .match_stateid
= nfs4_match_stateid
,
8672 .find_root_sec
= nfs4_find_root_sec
,
8673 .free_lock_state
= nfs4_release_lockowner
,
8674 .alloc_seqid
= nfs_alloc_seqid
,
8675 .call_sync_ops
= &nfs40_call_sync_ops
,
8676 .reboot_recovery_ops
= &nfs40_reboot_recovery_ops
,
8677 .nograce_recovery_ops
= &nfs40_nograce_recovery_ops
,
8678 .state_renewal_ops
= &nfs40_state_renewal_ops
,
8679 .mig_recovery_ops
= &nfs40_mig_recovery_ops
,
8682 #if defined(CONFIG_NFS_V4_1)
8683 static struct nfs_seqid
*
8684 nfs_alloc_no_seqid(struct nfs_seqid_counter
*arg1
, gfp_t arg2
)
8689 static const struct nfs4_minor_version_ops nfs_v4_1_minor_ops
= {
8691 .init_caps
= NFS_CAP_READDIRPLUS
8692 | NFS_CAP_ATOMIC_OPEN
8693 | NFS_CAP_POSIX_LOCK
8694 | NFS_CAP_STATEID_NFSV41
8695 | NFS_CAP_ATOMIC_OPEN_V1
,
8696 .init_client
= nfs41_init_client
,
8697 .shutdown_client
= nfs41_shutdown_client
,
8698 .match_stateid
= nfs41_match_stateid
,
8699 .find_root_sec
= nfs41_find_root_sec
,
8700 .free_lock_state
= nfs41_free_lock_state
,
8701 .alloc_seqid
= nfs_alloc_no_seqid
,
8702 .call_sync_ops
= &nfs41_call_sync_ops
,
8703 .reboot_recovery_ops
= &nfs41_reboot_recovery_ops
,
8704 .nograce_recovery_ops
= &nfs41_nograce_recovery_ops
,
8705 .state_renewal_ops
= &nfs41_state_renewal_ops
,
8706 .mig_recovery_ops
= &nfs41_mig_recovery_ops
,
8710 #if defined(CONFIG_NFS_V4_2)
8711 static const struct nfs4_minor_version_ops nfs_v4_2_minor_ops
= {
8713 .init_caps
= NFS_CAP_READDIRPLUS
8714 | NFS_CAP_ATOMIC_OPEN
8715 | NFS_CAP_POSIX_LOCK
8716 | NFS_CAP_STATEID_NFSV41
8717 | NFS_CAP_ATOMIC_OPEN_V1
8719 | NFS_CAP_DEALLOCATE
8721 | NFS_CAP_LAYOUTSTATS
,
8722 .init_client
= nfs41_init_client
,
8723 .shutdown_client
= nfs41_shutdown_client
,
8724 .match_stateid
= nfs41_match_stateid
,
8725 .find_root_sec
= nfs41_find_root_sec
,
8726 .free_lock_state
= nfs41_free_lock_state
,
8727 .call_sync_ops
= &nfs41_call_sync_ops
,
8728 .alloc_seqid
= nfs_alloc_no_seqid
,
8729 .reboot_recovery_ops
= &nfs41_reboot_recovery_ops
,
8730 .nograce_recovery_ops
= &nfs41_nograce_recovery_ops
,
8731 .state_renewal_ops
= &nfs41_state_renewal_ops
,
8732 .mig_recovery_ops
= &nfs41_mig_recovery_ops
,
8736 const struct nfs4_minor_version_ops
*nfs_v4_minor_ops
[] = {
8737 [0] = &nfs_v4_0_minor_ops
,
8738 #if defined(CONFIG_NFS_V4_1)
8739 [1] = &nfs_v4_1_minor_ops
,
8741 #if defined(CONFIG_NFS_V4_2)
8742 [2] = &nfs_v4_2_minor_ops
,
8746 static const struct inode_operations nfs4_dir_inode_operations
= {
8747 .create
= nfs_create
,
8748 .lookup
= nfs_lookup
,
8749 .atomic_open
= nfs_atomic_open
,
8751 .unlink
= nfs_unlink
,
8752 .symlink
= nfs_symlink
,
8756 .rename
= nfs_rename
,
8757 .permission
= nfs_permission
,
8758 .getattr
= nfs_getattr
,
8759 .setattr
= nfs_setattr
,
8760 .getxattr
= generic_getxattr
,
8761 .setxattr
= generic_setxattr
,
8762 .listxattr
= generic_listxattr
,
8763 .removexattr
= generic_removexattr
,
8766 static const struct inode_operations nfs4_file_inode_operations
= {
8767 .permission
= nfs_permission
,
8768 .getattr
= nfs_getattr
,
8769 .setattr
= nfs_setattr
,
8770 .getxattr
= generic_getxattr
,
8771 .setxattr
= generic_setxattr
,
8772 .listxattr
= generic_listxattr
,
8773 .removexattr
= generic_removexattr
,
8776 const struct nfs_rpc_ops nfs_v4_clientops
= {
8777 .version
= 4, /* protocol version */
8778 .dentry_ops
= &nfs4_dentry_operations
,
8779 .dir_inode_ops
= &nfs4_dir_inode_operations
,
8780 .file_inode_ops
= &nfs4_file_inode_operations
,
8781 .file_ops
= &nfs4_file_operations
,
8782 .getroot
= nfs4_proc_get_root
,
8783 .submount
= nfs4_submount
,
8784 .try_mount
= nfs4_try_mount
,
8785 .getattr
= nfs4_proc_getattr
,
8786 .setattr
= nfs4_proc_setattr
,
8787 .lookup
= nfs4_proc_lookup
,
8788 .access
= nfs4_proc_access
,
8789 .readlink
= nfs4_proc_readlink
,
8790 .create
= nfs4_proc_create
,
8791 .remove
= nfs4_proc_remove
,
8792 .unlink_setup
= nfs4_proc_unlink_setup
,
8793 .unlink_rpc_prepare
= nfs4_proc_unlink_rpc_prepare
,
8794 .unlink_done
= nfs4_proc_unlink_done
,
8795 .rename_setup
= nfs4_proc_rename_setup
,
8796 .rename_rpc_prepare
= nfs4_proc_rename_rpc_prepare
,
8797 .rename_done
= nfs4_proc_rename_done
,
8798 .link
= nfs4_proc_link
,
8799 .symlink
= nfs4_proc_symlink
,
8800 .mkdir
= nfs4_proc_mkdir
,
8801 .rmdir
= nfs4_proc_remove
,
8802 .readdir
= nfs4_proc_readdir
,
8803 .mknod
= nfs4_proc_mknod
,
8804 .statfs
= nfs4_proc_statfs
,
8805 .fsinfo
= nfs4_proc_fsinfo
,
8806 .pathconf
= nfs4_proc_pathconf
,
8807 .set_capabilities
= nfs4_server_capabilities
,
8808 .decode_dirent
= nfs4_decode_dirent
,
8809 .pgio_rpc_prepare
= nfs4_proc_pgio_rpc_prepare
,
8810 .read_setup
= nfs4_proc_read_setup
,
8811 .read_done
= nfs4_read_done
,
8812 .write_setup
= nfs4_proc_write_setup
,
8813 .write_done
= nfs4_write_done
,
8814 .commit_setup
= nfs4_proc_commit_setup
,
8815 .commit_rpc_prepare
= nfs4_proc_commit_rpc_prepare
,
8816 .commit_done
= nfs4_commit_done
,
8817 .lock
= nfs4_proc_lock
,
8818 .clear_acl_cache
= nfs4_zap_acl_attr
,
8819 .close_context
= nfs4_close_context
,
8820 .open_context
= nfs4_atomic_open
,
8821 .have_delegation
= nfs4_have_delegation
,
8822 .return_delegation
= nfs4_inode_return_delegation
,
8823 .alloc_client
= nfs4_alloc_client
,
8824 .init_client
= nfs4_init_client
,
8825 .free_client
= nfs4_free_client
,
8826 .create_server
= nfs4_create_server
,
8827 .clone_server
= nfs_clone_server
,
8830 static const struct xattr_handler nfs4_xattr_nfs4_acl_handler
= {
8831 .prefix
= XATTR_NAME_NFSV4_ACL
,
8832 .list
= nfs4_xattr_list_nfs4_acl
,
8833 .get
= nfs4_xattr_get_nfs4_acl
,
8834 .set
= nfs4_xattr_set_nfs4_acl
,
8837 const struct xattr_handler
*nfs4_xattr_handlers
[] = {
8838 &nfs4_xattr_nfs4_acl_handler
,
8839 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
8840 &nfs4_xattr_nfs4_label_handler
,