4 * Client-side procedure declarations for NFSv4.
6 * Copyright (c) 2002 The Regents of the University of Michigan.
9 * Kendrick Smith <kmsmith@umich.edu>
10 * Andy Adamson <andros@umich.edu>
12 * Redistribution and use in source and binary forms, with or without
13 * modification, are permitted provided that the following conditions
16 * 1. Redistributions of source code must retain the above copyright
17 * notice, this list of conditions and the following disclaimer.
18 * 2. Redistributions in binary form must reproduce the above copyright
19 * notice, this list of conditions and the following disclaimer in the
20 * documentation and/or other materials provided with the distribution.
21 * 3. Neither the name of the University nor the names of its
22 * contributors may be used to endorse or promote products derived
23 * from this software without specific prior written permission.
25 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
26 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
27 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
28 * DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
29 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
30 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
31 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
32 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
33 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
34 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
35 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
39 #include <linux/delay.h>
40 #include <linux/errno.h>
41 #include <linux/file.h>
42 #include <linux/string.h>
43 #include <linux/ratelimit.h>
44 #include <linux/printk.h>
45 #include <linux/slab.h>
46 #include <linux/sunrpc/clnt.h>
47 #include <linux/nfs.h>
48 #include <linux/nfs4.h>
49 #include <linux/nfs_fs.h>
50 #include <linux/nfs_page.h>
51 #include <linux/nfs_mount.h>
52 #include <linux/namei.h>
53 #include <linux/mount.h>
54 #include <linux/module.h>
55 #include <linux/xattr.h>
56 #include <linux/utsname.h>
57 #include <linux/freezer.h>
60 #include "delegation.h"
66 #include "nfs4idmap.h"
67 #include "nfs4session.h"
70 #include "nfs4trace.h"
72 #define NFSDBG_FACILITY NFSDBG_PROC
74 #define NFS4_POLL_RETRY_MIN (HZ/10)
75 #define NFS4_POLL_RETRY_MAX (15*HZ)
78 static int _nfs4_proc_open(struct nfs4_opendata
*data
);
79 static int _nfs4_recover_proc_open(struct nfs4_opendata
*data
);
80 static int nfs4_do_fsinfo(struct nfs_server
*, struct nfs_fh
*, struct nfs_fsinfo
*);
81 static int nfs4_async_handle_error(struct rpc_task
*, const struct nfs_server
*, struct nfs4_state
*, long *);
82 static void nfs_fixup_referral_attributes(struct nfs_fattr
*fattr
);
83 static int nfs4_proc_getattr(struct nfs_server
*, struct nfs_fh
*, struct nfs_fattr
*, struct nfs4_label
*label
);
84 static int _nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
, struct nfs4_label
*label
);
85 static int nfs4_do_setattr(struct inode
*inode
, struct rpc_cred
*cred
,
86 struct nfs_fattr
*fattr
, struct iattr
*sattr
,
87 struct nfs4_state
*state
, struct nfs4_label
*ilabel
,
88 struct nfs4_label
*olabel
);
89 #ifdef CONFIG_NFS_V4_1
90 static int nfs41_test_stateid(struct nfs_server
*, nfs4_stateid
*,
92 static int nfs41_free_stateid(struct nfs_server
*, nfs4_stateid
*,
96 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
97 static inline struct nfs4_label
*
98 nfs4_label_init_security(struct inode
*dir
, struct dentry
*dentry
,
99 struct iattr
*sattr
, struct nfs4_label
*label
)
106 if (nfs_server_capable(dir
, NFS_CAP_SECURITY_LABEL
) == 0)
109 err
= security_dentry_init_security(dentry
, sattr
->ia_mode
,
110 &dentry
->d_name
, (void **)&label
->label
, &label
->len
);
117 nfs4_label_release_security(struct nfs4_label
*label
)
120 security_release_secctx(label
->label
, label
->len
);
122 static inline u32
*nfs4_bitmask(struct nfs_server
*server
, struct nfs4_label
*label
)
125 return server
->attr_bitmask
;
127 return server
->attr_bitmask_nl
;
130 static inline struct nfs4_label
*
131 nfs4_label_init_security(struct inode
*dir
, struct dentry
*dentry
,
132 struct iattr
*sattr
, struct nfs4_label
*l
)
135 nfs4_label_release_security(struct nfs4_label
*label
)
138 nfs4_bitmask(struct nfs_server
*server
, struct nfs4_label
*label
)
139 { return server
->attr_bitmask
; }
142 /* Prevent leaks of NFSv4 errors into userland */
143 static int nfs4_map_errors(int err
)
148 case -NFS4ERR_RESOURCE
:
149 case -NFS4ERR_LAYOUTTRYLATER
:
150 case -NFS4ERR_RECALLCONFLICT
:
152 case -NFS4ERR_WRONGSEC
:
153 case -NFS4ERR_WRONG_CRED
:
155 case -NFS4ERR_BADOWNER
:
156 case -NFS4ERR_BADNAME
:
158 case -NFS4ERR_SHARE_DENIED
:
160 case -NFS4ERR_MINOR_VERS_MISMATCH
:
161 return -EPROTONOSUPPORT
;
162 case -NFS4ERR_FILE_OPEN
:
165 dprintk("%s could not handle NFSv4 error %d\n",
173 * This is our standard bitmap for GETATTR requests.
175 const u32 nfs4_fattr_bitmap
[3] = {
177 | FATTR4_WORD0_CHANGE
180 | FATTR4_WORD0_FILEID
,
182 | FATTR4_WORD1_NUMLINKS
184 | FATTR4_WORD1_OWNER_GROUP
185 | FATTR4_WORD1_RAWDEV
186 | FATTR4_WORD1_SPACE_USED
187 | FATTR4_WORD1_TIME_ACCESS
188 | FATTR4_WORD1_TIME_METADATA
189 | FATTR4_WORD1_TIME_MODIFY
190 | FATTR4_WORD1_MOUNTED_ON_FILEID
,
191 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
192 FATTR4_WORD2_SECURITY_LABEL
196 static const u32 nfs4_pnfs_open_bitmap
[3] = {
198 | FATTR4_WORD0_CHANGE
201 | FATTR4_WORD0_FILEID
,
203 | FATTR4_WORD1_NUMLINKS
205 | FATTR4_WORD1_OWNER_GROUP
206 | FATTR4_WORD1_RAWDEV
207 | FATTR4_WORD1_SPACE_USED
208 | FATTR4_WORD1_TIME_ACCESS
209 | FATTR4_WORD1_TIME_METADATA
210 | FATTR4_WORD1_TIME_MODIFY
,
211 FATTR4_WORD2_MDSTHRESHOLD
214 static const u32 nfs4_open_noattr_bitmap
[3] = {
216 | FATTR4_WORD0_CHANGE
217 | FATTR4_WORD0_FILEID
,
220 const u32 nfs4_statfs_bitmap
[3] = {
221 FATTR4_WORD0_FILES_AVAIL
222 | FATTR4_WORD0_FILES_FREE
223 | FATTR4_WORD0_FILES_TOTAL
,
224 FATTR4_WORD1_SPACE_AVAIL
225 | FATTR4_WORD1_SPACE_FREE
226 | FATTR4_WORD1_SPACE_TOTAL
229 const u32 nfs4_pathconf_bitmap
[3] = {
231 | FATTR4_WORD0_MAXNAME
,
235 const u32 nfs4_fsinfo_bitmap
[3] = { FATTR4_WORD0_MAXFILESIZE
236 | FATTR4_WORD0_MAXREAD
237 | FATTR4_WORD0_MAXWRITE
238 | FATTR4_WORD0_LEASE_TIME
,
239 FATTR4_WORD1_TIME_DELTA
240 | FATTR4_WORD1_FS_LAYOUT_TYPES
,
241 FATTR4_WORD2_LAYOUT_BLKSIZE
244 const u32 nfs4_fs_locations_bitmap
[3] = {
246 | FATTR4_WORD0_CHANGE
249 | FATTR4_WORD0_FILEID
250 | FATTR4_WORD0_FS_LOCATIONS
,
252 | FATTR4_WORD1_NUMLINKS
254 | FATTR4_WORD1_OWNER_GROUP
255 | FATTR4_WORD1_RAWDEV
256 | FATTR4_WORD1_SPACE_USED
257 | FATTR4_WORD1_TIME_ACCESS
258 | FATTR4_WORD1_TIME_METADATA
259 | FATTR4_WORD1_TIME_MODIFY
260 | FATTR4_WORD1_MOUNTED_ON_FILEID
,
263 static void nfs4_setup_readdir(u64 cookie
, __be32
*verifier
, struct dentry
*dentry
,
264 struct nfs4_readdir_arg
*readdir
)
269 readdir
->cookie
= cookie
;
270 memcpy(&readdir
->verifier
, verifier
, sizeof(readdir
->verifier
));
275 memset(&readdir
->verifier
, 0, sizeof(readdir
->verifier
));
280 * NFSv4 servers do not return entries for '.' and '..'
281 * Therefore, we fake these entries here. We let '.'
282 * have cookie 0 and '..' have cookie 1. Note that
283 * when talking to the server, we always send cookie 0
286 start
= p
= kmap_atomic(*readdir
->pages
);
289 *p
++ = xdr_one
; /* next */
290 *p
++ = xdr_zero
; /* cookie, first word */
291 *p
++ = xdr_one
; /* cookie, second word */
292 *p
++ = xdr_one
; /* entry len */
293 memcpy(p
, ".\0\0\0", 4); /* entry */
295 *p
++ = xdr_one
; /* bitmap length */
296 *p
++ = htonl(FATTR4_WORD0_FILEID
); /* bitmap */
297 *p
++ = htonl(8); /* attribute buffer length */
298 p
= xdr_encode_hyper(p
, NFS_FILEID(d_inode(dentry
)));
301 *p
++ = xdr_one
; /* next */
302 *p
++ = xdr_zero
; /* cookie, first word */
303 *p
++ = xdr_two
; /* cookie, second word */
304 *p
++ = xdr_two
; /* entry len */
305 memcpy(p
, "..\0\0", 4); /* entry */
307 *p
++ = xdr_one
; /* bitmap length */
308 *p
++ = htonl(FATTR4_WORD0_FILEID
); /* bitmap */
309 *p
++ = htonl(8); /* attribute buffer length */
310 p
= xdr_encode_hyper(p
, NFS_FILEID(d_inode(dentry
->d_parent
)));
312 readdir
->pgbase
= (char *)p
- (char *)start
;
313 readdir
->count
-= readdir
->pgbase
;
314 kunmap_atomic(start
);
317 static long nfs4_update_delay(long *timeout
)
321 return NFS4_POLL_RETRY_MAX
;
323 *timeout
= NFS4_POLL_RETRY_MIN
;
324 if (*timeout
> NFS4_POLL_RETRY_MAX
)
325 *timeout
= NFS4_POLL_RETRY_MAX
;
331 static int nfs4_delay(struct rpc_clnt
*clnt
, long *timeout
)
337 freezable_schedule_timeout_killable_unsafe(
338 nfs4_update_delay(timeout
));
339 if (fatal_signal_pending(current
))
344 /* This is the error handling routine for processes that are allowed
347 int nfs4_handle_exception(struct nfs_server
*server
, int errorcode
, struct nfs4_exception
*exception
)
349 struct nfs_client
*clp
= server
->nfs_client
;
350 struct nfs4_state
*state
= exception
->state
;
351 struct inode
*inode
= exception
->inode
;
354 exception
->retry
= 0;
358 case -NFS4ERR_OPENMODE
:
359 case -NFS4ERR_DELEG_REVOKED
:
360 case -NFS4ERR_ADMIN_REVOKED
:
361 case -NFS4ERR_BAD_STATEID
:
362 if (inode
&& nfs4_have_delegation(inode
, FMODE_READ
)) {
363 nfs4_inode_return_delegation(inode
);
364 exception
->retry
= 1;
369 ret
= nfs4_schedule_stateid_recovery(server
, state
);
372 goto wait_on_recovery
;
373 case -NFS4ERR_EXPIRED
:
375 ret
= nfs4_schedule_stateid_recovery(server
, state
);
379 case -NFS4ERR_STALE_STATEID
:
380 case -NFS4ERR_STALE_CLIENTID
:
381 nfs4_schedule_lease_recovery(clp
);
382 goto wait_on_recovery
;
384 ret
= nfs4_schedule_migration_recovery(server
);
387 goto wait_on_recovery
;
388 case -NFS4ERR_LEASE_MOVED
:
389 nfs4_schedule_lease_moved_recovery(clp
);
390 goto wait_on_recovery
;
391 #if defined(CONFIG_NFS_V4_1)
392 case -NFS4ERR_BADSESSION
:
393 case -NFS4ERR_BADSLOT
:
394 case -NFS4ERR_BAD_HIGH_SLOT
:
395 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
396 case -NFS4ERR_DEADSESSION
:
397 case -NFS4ERR_SEQ_FALSE_RETRY
:
398 case -NFS4ERR_SEQ_MISORDERED
:
399 dprintk("%s ERROR: %d Reset session\n", __func__
,
401 nfs4_schedule_session_recovery(clp
->cl_session
, errorcode
);
402 goto wait_on_recovery
;
403 #endif /* defined(CONFIG_NFS_V4_1) */
404 case -NFS4ERR_FILE_OPEN
:
405 if (exception
->timeout
> HZ
) {
406 /* We have retried a decent amount, time to
414 ret
= nfs4_delay(server
->client
, &exception
->timeout
);
417 case -NFS4ERR_RETRY_UNCACHED_REP
:
418 case -NFS4ERR_OLD_STATEID
:
419 exception
->retry
= 1;
421 case -NFS4ERR_BADOWNER
:
422 /* The following works around a Linux server bug! */
423 case -NFS4ERR_BADNAME
:
424 if (server
->caps
& NFS_CAP_UIDGID_NOMAP
) {
425 server
->caps
&= ~NFS_CAP_UIDGID_NOMAP
;
426 exception
->retry
= 1;
427 printk(KERN_WARNING
"NFS: v4 server %s "
428 "does not accept raw "
430 "Reenabling the idmapper.\n",
431 server
->nfs_client
->cl_hostname
);
434 /* We failed to handle the error */
435 return nfs4_map_errors(ret
);
437 ret
= nfs4_wait_clnt_recover(clp
);
438 if (test_bit(NFS_MIG_FAILED
, &server
->mig_status
))
441 exception
->retry
= 1;
446 * Return 'true' if 'clp' is using an rpc_client that is integrity protected
447 * or 'false' otherwise.
449 static bool _nfs4_is_integrity_protected(struct nfs_client
*clp
)
451 rpc_authflavor_t flavor
= clp
->cl_rpcclient
->cl_auth
->au_flavor
;
453 if (flavor
== RPC_AUTH_GSS_KRB5I
||
454 flavor
== RPC_AUTH_GSS_KRB5P
)
460 static void do_renew_lease(struct nfs_client
*clp
, unsigned long timestamp
)
462 spin_lock(&clp
->cl_lock
);
463 if (time_before(clp
->cl_last_renewal
,timestamp
))
464 clp
->cl_last_renewal
= timestamp
;
465 spin_unlock(&clp
->cl_lock
);
468 static void renew_lease(const struct nfs_server
*server
, unsigned long timestamp
)
470 struct nfs_client
*clp
= server
->nfs_client
;
472 if (!nfs4_has_session(clp
))
473 do_renew_lease(clp
, timestamp
);
476 struct nfs4_call_sync_data
{
477 const struct nfs_server
*seq_server
;
478 struct nfs4_sequence_args
*seq_args
;
479 struct nfs4_sequence_res
*seq_res
;
482 void nfs4_init_sequence(struct nfs4_sequence_args
*args
,
483 struct nfs4_sequence_res
*res
, int cache_reply
)
485 args
->sa_slot
= NULL
;
486 args
->sa_cache_this
= cache_reply
;
487 args
->sa_privileged
= 0;
492 static void nfs4_set_sequence_privileged(struct nfs4_sequence_args
*args
)
494 args
->sa_privileged
= 1;
497 int nfs40_setup_sequence(struct nfs4_slot_table
*tbl
,
498 struct nfs4_sequence_args
*args
,
499 struct nfs4_sequence_res
*res
,
500 struct rpc_task
*task
)
502 struct nfs4_slot
*slot
;
504 /* slot already allocated? */
505 if (res
->sr_slot
!= NULL
)
508 spin_lock(&tbl
->slot_tbl_lock
);
509 if (nfs4_slot_tbl_draining(tbl
) && !args
->sa_privileged
)
512 slot
= nfs4_alloc_slot(tbl
);
514 if (slot
== ERR_PTR(-ENOMEM
))
515 task
->tk_timeout
= HZ
>> 2;
518 spin_unlock(&tbl
->slot_tbl_lock
);
520 args
->sa_slot
= slot
;
524 rpc_call_start(task
);
528 if (args
->sa_privileged
)
529 rpc_sleep_on_priority(&tbl
->slot_tbl_waitq
, task
,
530 NULL
, RPC_PRIORITY_PRIVILEGED
);
532 rpc_sleep_on(&tbl
->slot_tbl_waitq
, task
, NULL
);
533 spin_unlock(&tbl
->slot_tbl_lock
);
536 EXPORT_SYMBOL_GPL(nfs40_setup_sequence
);
538 static int nfs40_sequence_done(struct rpc_task
*task
,
539 struct nfs4_sequence_res
*res
)
541 struct nfs4_slot
*slot
= res
->sr_slot
;
542 struct nfs4_slot_table
*tbl
;
548 spin_lock(&tbl
->slot_tbl_lock
);
549 if (!nfs41_wake_and_assign_slot(tbl
, slot
))
550 nfs4_free_slot(tbl
, slot
);
551 spin_unlock(&tbl
->slot_tbl_lock
);
558 #if defined(CONFIG_NFS_V4_1)
560 static void nfs41_sequence_free_slot(struct nfs4_sequence_res
*res
)
562 struct nfs4_session
*session
;
563 struct nfs4_slot_table
*tbl
;
564 struct nfs4_slot
*slot
= res
->sr_slot
;
565 bool send_new_highest_used_slotid
= false;
568 session
= tbl
->session
;
570 spin_lock(&tbl
->slot_tbl_lock
);
571 /* Be nice to the server: try to ensure that the last transmitted
572 * value for highest_user_slotid <= target_highest_slotid
574 if (tbl
->highest_used_slotid
> tbl
->target_highest_slotid
)
575 send_new_highest_used_slotid
= true;
577 if (nfs41_wake_and_assign_slot(tbl
, slot
)) {
578 send_new_highest_used_slotid
= false;
581 nfs4_free_slot(tbl
, slot
);
583 if (tbl
->highest_used_slotid
!= NFS4_NO_SLOT
)
584 send_new_highest_used_slotid
= false;
586 spin_unlock(&tbl
->slot_tbl_lock
);
588 if (send_new_highest_used_slotid
)
589 nfs41_notify_server(session
->clp
);
592 int nfs41_sequence_done(struct rpc_task
*task
, struct nfs4_sequence_res
*res
)
594 struct nfs4_session
*session
;
595 struct nfs4_slot
*slot
= res
->sr_slot
;
596 struct nfs_client
*clp
;
597 bool interrupted
= false;
602 /* don't increment the sequence number if the task wasn't sent */
603 if (!RPC_WAS_SENT(task
))
606 session
= slot
->table
->session
;
608 if (slot
->interrupted
) {
609 slot
->interrupted
= 0;
613 trace_nfs4_sequence_done(session
, res
);
614 /* Check the SEQUENCE operation status */
615 switch (res
->sr_status
) {
617 /* Update the slot's sequence and clientid lease timer */
620 do_renew_lease(clp
, res
->sr_timestamp
);
621 /* Check sequence flags */
622 nfs41_handle_sequence_flag_errors(clp
, res
->sr_status_flags
);
623 nfs41_update_target_slotid(slot
->table
, slot
, res
);
627 * sr_status remains 1 if an RPC level error occurred.
628 * The server may or may not have processed the sequence
630 * Mark the slot as having hosted an interrupted RPC call.
632 slot
->interrupted
= 1;
635 /* The server detected a resend of the RPC call and
636 * returned NFS4ERR_DELAY as per Section 2.10.6.2
639 dprintk("%s: slot=%u seq=%u: Operation in progress\n",
644 case -NFS4ERR_BADSLOT
:
646 * The slot id we used was probably retired. Try again
647 * using a different slot id.
650 case -NFS4ERR_SEQ_MISORDERED
:
652 * Was the last operation on this sequence interrupted?
653 * If so, retry after bumping the sequence number.
660 * Could this slot have been previously retired?
661 * If so, then the server may be expecting seq_nr = 1!
663 if (slot
->seq_nr
!= 1) {
668 case -NFS4ERR_SEQ_FALSE_RETRY
:
672 /* Just update the slot sequence no. */
676 /* The session may be reset by one of the error handlers. */
677 dprintk("%s: Error %d free the slot \n", __func__
, res
->sr_status
);
678 nfs41_sequence_free_slot(res
);
682 if (rpc_restart_call_prepare(task
)) {
688 if (!rpc_restart_call(task
))
690 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
693 EXPORT_SYMBOL_GPL(nfs41_sequence_done
);
695 int nfs4_sequence_done(struct rpc_task
*task
, struct nfs4_sequence_res
*res
)
697 if (res
->sr_slot
== NULL
)
699 if (!res
->sr_slot
->table
->session
)
700 return nfs40_sequence_done(task
, res
);
701 return nfs41_sequence_done(task
, res
);
703 EXPORT_SYMBOL_GPL(nfs4_sequence_done
);
705 int nfs41_setup_sequence(struct nfs4_session
*session
,
706 struct nfs4_sequence_args
*args
,
707 struct nfs4_sequence_res
*res
,
708 struct rpc_task
*task
)
710 struct nfs4_slot
*slot
;
711 struct nfs4_slot_table
*tbl
;
713 dprintk("--> %s\n", __func__
);
714 /* slot already allocated? */
715 if (res
->sr_slot
!= NULL
)
718 tbl
= &session
->fc_slot_table
;
720 task
->tk_timeout
= 0;
722 spin_lock(&tbl
->slot_tbl_lock
);
723 if (test_bit(NFS4_SLOT_TBL_DRAINING
, &tbl
->slot_tbl_state
) &&
724 !args
->sa_privileged
) {
725 /* The state manager will wait until the slot table is empty */
726 dprintk("%s session is draining\n", __func__
);
730 slot
= nfs4_alloc_slot(tbl
);
732 /* If out of memory, try again in 1/4 second */
733 if (slot
== ERR_PTR(-ENOMEM
))
734 task
->tk_timeout
= HZ
>> 2;
735 dprintk("<-- %s: no free slots\n", __func__
);
738 spin_unlock(&tbl
->slot_tbl_lock
);
740 args
->sa_slot
= slot
;
742 dprintk("<-- %s slotid=%u seqid=%u\n", __func__
,
743 slot
->slot_nr
, slot
->seq_nr
);
746 res
->sr_timestamp
= jiffies
;
747 res
->sr_status_flags
= 0;
749 * sr_status is only set in decode_sequence, and so will remain
750 * set to 1 if an rpc level failure occurs.
753 trace_nfs4_setup_sequence(session
, args
);
755 rpc_call_start(task
);
758 /* Privileged tasks are queued with top priority */
759 if (args
->sa_privileged
)
760 rpc_sleep_on_priority(&tbl
->slot_tbl_waitq
, task
,
761 NULL
, RPC_PRIORITY_PRIVILEGED
);
763 rpc_sleep_on(&tbl
->slot_tbl_waitq
, task
, NULL
);
764 spin_unlock(&tbl
->slot_tbl_lock
);
767 EXPORT_SYMBOL_GPL(nfs41_setup_sequence
);
769 static int nfs4_setup_sequence(const struct nfs_server
*server
,
770 struct nfs4_sequence_args
*args
,
771 struct nfs4_sequence_res
*res
,
772 struct rpc_task
*task
)
774 struct nfs4_session
*session
= nfs4_get_session(server
);
778 return nfs40_setup_sequence(server
->nfs_client
->cl_slot_tbl
,
781 dprintk("--> %s clp %p session %p sr_slot %u\n",
782 __func__
, session
->clp
, session
, res
->sr_slot
?
783 res
->sr_slot
->slot_nr
: NFS4_NO_SLOT
);
785 ret
= nfs41_setup_sequence(session
, args
, res
, task
);
787 dprintk("<-- %s status=%d\n", __func__
, ret
);
791 static void nfs41_call_sync_prepare(struct rpc_task
*task
, void *calldata
)
793 struct nfs4_call_sync_data
*data
= calldata
;
794 struct nfs4_session
*session
= nfs4_get_session(data
->seq_server
);
796 dprintk("--> %s data->seq_server %p\n", __func__
, data
->seq_server
);
798 nfs41_setup_sequence(session
, data
->seq_args
, data
->seq_res
, task
);
801 static void nfs41_call_sync_done(struct rpc_task
*task
, void *calldata
)
803 struct nfs4_call_sync_data
*data
= calldata
;
805 nfs41_sequence_done(task
, data
->seq_res
);
808 static const struct rpc_call_ops nfs41_call_sync_ops
= {
809 .rpc_call_prepare
= nfs41_call_sync_prepare
,
810 .rpc_call_done
= nfs41_call_sync_done
,
813 #else /* !CONFIG_NFS_V4_1 */
815 static int nfs4_setup_sequence(const struct nfs_server
*server
,
816 struct nfs4_sequence_args
*args
,
817 struct nfs4_sequence_res
*res
,
818 struct rpc_task
*task
)
820 return nfs40_setup_sequence(server
->nfs_client
->cl_slot_tbl
,
824 int nfs4_sequence_done(struct rpc_task
*task
,
825 struct nfs4_sequence_res
*res
)
827 return nfs40_sequence_done(task
, res
);
829 EXPORT_SYMBOL_GPL(nfs4_sequence_done
);
831 #endif /* !CONFIG_NFS_V4_1 */
833 static void nfs40_call_sync_prepare(struct rpc_task
*task
, void *calldata
)
835 struct nfs4_call_sync_data
*data
= calldata
;
836 nfs4_setup_sequence(data
->seq_server
,
837 data
->seq_args
, data
->seq_res
, task
);
840 static void nfs40_call_sync_done(struct rpc_task
*task
, void *calldata
)
842 struct nfs4_call_sync_data
*data
= calldata
;
843 nfs4_sequence_done(task
, data
->seq_res
);
846 static const struct rpc_call_ops nfs40_call_sync_ops
= {
847 .rpc_call_prepare
= nfs40_call_sync_prepare
,
848 .rpc_call_done
= nfs40_call_sync_done
,
851 static int nfs4_call_sync_sequence(struct rpc_clnt
*clnt
,
852 struct nfs_server
*server
,
853 struct rpc_message
*msg
,
854 struct nfs4_sequence_args
*args
,
855 struct nfs4_sequence_res
*res
)
858 struct rpc_task
*task
;
859 struct nfs_client
*clp
= server
->nfs_client
;
860 struct nfs4_call_sync_data data
= {
861 .seq_server
= server
,
865 struct rpc_task_setup task_setup
= {
868 .callback_ops
= clp
->cl_mvops
->call_sync_ops
,
869 .callback_data
= &data
872 task
= rpc_run_task(&task_setup
);
876 ret
= task
->tk_status
;
882 int nfs4_call_sync(struct rpc_clnt
*clnt
,
883 struct nfs_server
*server
,
884 struct rpc_message
*msg
,
885 struct nfs4_sequence_args
*args
,
886 struct nfs4_sequence_res
*res
,
889 nfs4_init_sequence(args
, res
, cache_reply
);
890 return nfs4_call_sync_sequence(clnt
, server
, msg
, args
, res
);
893 static void update_changeattr(struct inode
*dir
, struct nfs4_change_info
*cinfo
)
895 struct nfs_inode
*nfsi
= NFS_I(dir
);
897 spin_lock(&dir
->i_lock
);
898 nfsi
->cache_validity
|= NFS_INO_INVALID_ATTR
|NFS_INO_INVALID_DATA
;
899 if (!cinfo
->atomic
|| cinfo
->before
!= dir
->i_version
)
900 nfs_force_lookup_revalidate(dir
);
901 dir
->i_version
= cinfo
->after
;
902 nfsi
->attr_gencount
= nfs_inc_attr_generation_counter();
903 nfs_fscache_invalidate(dir
);
904 spin_unlock(&dir
->i_lock
);
907 struct nfs4_opendata
{
909 struct nfs_openargs o_arg
;
910 struct nfs_openres o_res
;
911 struct nfs_open_confirmargs c_arg
;
912 struct nfs_open_confirmres c_res
;
913 struct nfs4_string owner_name
;
914 struct nfs4_string group_name
;
915 struct nfs4_label
*a_label
;
916 struct nfs_fattr f_attr
;
917 struct nfs4_label
*f_label
;
919 struct dentry
*dentry
;
920 struct nfs4_state_owner
*owner
;
921 struct nfs4_state
*state
;
923 unsigned long timestamp
;
924 unsigned int rpc_done
: 1;
925 unsigned int file_created
: 1;
926 unsigned int is_recover
: 1;
931 static bool nfs4_clear_cap_atomic_open_v1(struct nfs_server
*server
,
932 int err
, struct nfs4_exception
*exception
)
936 if (!(server
->caps
& NFS_CAP_ATOMIC_OPEN_V1
))
938 server
->caps
&= ~NFS_CAP_ATOMIC_OPEN_V1
;
939 exception
->retry
= 1;
944 nfs4_map_atomic_open_share(struct nfs_server
*server
,
945 fmode_t fmode
, int openflags
)
949 switch (fmode
& (FMODE_READ
| FMODE_WRITE
)) {
951 res
= NFS4_SHARE_ACCESS_READ
;
954 res
= NFS4_SHARE_ACCESS_WRITE
;
956 case FMODE_READ
|FMODE_WRITE
:
957 res
= NFS4_SHARE_ACCESS_BOTH
;
959 if (!(server
->caps
& NFS_CAP_ATOMIC_OPEN_V1
))
961 /* Want no delegation if we're using O_DIRECT */
962 if (openflags
& O_DIRECT
)
963 res
|= NFS4_SHARE_WANT_NO_DELEG
;
968 static enum open_claim_type4
969 nfs4_map_atomic_open_claim(struct nfs_server
*server
,
970 enum open_claim_type4 claim
)
972 if (server
->caps
& NFS_CAP_ATOMIC_OPEN_V1
)
977 case NFS4_OPEN_CLAIM_FH
:
978 return NFS4_OPEN_CLAIM_NULL
;
979 case NFS4_OPEN_CLAIM_DELEG_CUR_FH
:
980 return NFS4_OPEN_CLAIM_DELEGATE_CUR
;
981 case NFS4_OPEN_CLAIM_DELEG_PREV_FH
:
982 return NFS4_OPEN_CLAIM_DELEGATE_PREV
;
986 static void nfs4_init_opendata_res(struct nfs4_opendata
*p
)
988 p
->o_res
.f_attr
= &p
->f_attr
;
989 p
->o_res
.f_label
= p
->f_label
;
990 p
->o_res
.seqid
= p
->o_arg
.seqid
;
991 p
->c_res
.seqid
= p
->c_arg
.seqid
;
992 p
->o_res
.server
= p
->o_arg
.server
;
993 p
->o_res
.access_request
= p
->o_arg
.access
;
994 nfs_fattr_init(&p
->f_attr
);
995 nfs_fattr_init_names(&p
->f_attr
, &p
->owner_name
, &p
->group_name
);
998 static struct nfs4_opendata
*nfs4_opendata_alloc(struct dentry
*dentry
,
999 struct nfs4_state_owner
*sp
, fmode_t fmode
, int flags
,
1000 const struct iattr
*attrs
,
1001 struct nfs4_label
*label
,
1002 enum open_claim_type4 claim
,
1005 struct dentry
*parent
= dget_parent(dentry
);
1006 struct inode
*dir
= d_inode(parent
);
1007 struct nfs_server
*server
= NFS_SERVER(dir
);
1008 struct nfs_seqid
*(*alloc_seqid
)(struct nfs_seqid_counter
*, gfp_t
);
1009 struct nfs4_opendata
*p
;
1011 p
= kzalloc(sizeof(*p
), gfp_mask
);
1015 p
->f_label
= nfs4_label_alloc(server
, gfp_mask
);
1016 if (IS_ERR(p
->f_label
))
1019 p
->a_label
= nfs4_label_alloc(server
, gfp_mask
);
1020 if (IS_ERR(p
->a_label
))
1023 alloc_seqid
= server
->nfs_client
->cl_mvops
->alloc_seqid
;
1024 p
->o_arg
.seqid
= alloc_seqid(&sp
->so_seqid
, gfp_mask
);
1025 if (IS_ERR(p
->o_arg
.seqid
))
1026 goto err_free_label
;
1027 nfs_sb_active(dentry
->d_sb
);
1028 p
->dentry
= dget(dentry
);
1031 atomic_inc(&sp
->so_count
);
1032 p
->o_arg
.open_flags
= flags
;
1033 p
->o_arg
.fmode
= fmode
& (FMODE_READ
|FMODE_WRITE
);
1034 p
->o_arg
.share_access
= nfs4_map_atomic_open_share(server
,
1036 /* don't put an ACCESS op in OPEN compound if O_EXCL, because ACCESS
1037 * will return permission denied for all bits until close */
1038 if (!(flags
& O_EXCL
)) {
1039 /* ask server to check for all possible rights as results
1041 p
->o_arg
.access
= NFS4_ACCESS_READ
| NFS4_ACCESS_MODIFY
|
1042 NFS4_ACCESS_EXTEND
| NFS4_ACCESS_EXECUTE
;
1044 p
->o_arg
.clientid
= server
->nfs_client
->cl_clientid
;
1045 p
->o_arg
.id
.create_time
= ktime_to_ns(sp
->so_seqid
.create_time
);
1046 p
->o_arg
.id
.uniquifier
= sp
->so_seqid
.owner_id
;
1047 p
->o_arg
.name
= &dentry
->d_name
;
1048 p
->o_arg
.server
= server
;
1049 p
->o_arg
.bitmask
= nfs4_bitmask(server
, label
);
1050 p
->o_arg
.open_bitmap
= &nfs4_fattr_bitmap
[0];
1051 p
->o_arg
.label
= nfs4_label_copy(p
->a_label
, label
);
1052 p
->o_arg
.claim
= nfs4_map_atomic_open_claim(server
, claim
);
1053 switch (p
->o_arg
.claim
) {
1054 case NFS4_OPEN_CLAIM_NULL
:
1055 case NFS4_OPEN_CLAIM_DELEGATE_CUR
:
1056 case NFS4_OPEN_CLAIM_DELEGATE_PREV
:
1057 p
->o_arg
.fh
= NFS_FH(dir
);
1059 case NFS4_OPEN_CLAIM_PREVIOUS
:
1060 case NFS4_OPEN_CLAIM_FH
:
1061 case NFS4_OPEN_CLAIM_DELEG_CUR_FH
:
1062 case NFS4_OPEN_CLAIM_DELEG_PREV_FH
:
1063 p
->o_arg
.fh
= NFS_FH(d_inode(dentry
));
1065 if (attrs
!= NULL
&& attrs
->ia_valid
!= 0) {
1068 p
->o_arg
.u
.attrs
= &p
->attrs
;
1069 memcpy(&p
->attrs
, attrs
, sizeof(p
->attrs
));
1072 verf
[1] = current
->pid
;
1073 memcpy(p
->o_arg
.u
.verifier
.data
, verf
,
1074 sizeof(p
->o_arg
.u
.verifier
.data
));
1076 p
->c_arg
.fh
= &p
->o_res
.fh
;
1077 p
->c_arg
.stateid
= &p
->o_res
.stateid
;
1078 p
->c_arg
.seqid
= p
->o_arg
.seqid
;
1079 nfs4_init_opendata_res(p
);
1080 kref_init(&p
->kref
);
1084 nfs4_label_free(p
->a_label
);
1086 nfs4_label_free(p
->f_label
);
1094 static void nfs4_opendata_free(struct kref
*kref
)
1096 struct nfs4_opendata
*p
= container_of(kref
,
1097 struct nfs4_opendata
, kref
);
1098 struct super_block
*sb
= p
->dentry
->d_sb
;
1100 nfs_free_seqid(p
->o_arg
.seqid
);
1101 if (p
->state
!= NULL
)
1102 nfs4_put_open_state(p
->state
);
1103 nfs4_put_state_owner(p
->owner
);
1105 nfs4_label_free(p
->a_label
);
1106 nfs4_label_free(p
->f_label
);
1110 nfs_sb_deactive(sb
);
1111 nfs_fattr_free_names(&p
->f_attr
);
1112 kfree(p
->f_attr
.mdsthreshold
);
1116 static void nfs4_opendata_put(struct nfs4_opendata
*p
)
1119 kref_put(&p
->kref
, nfs4_opendata_free
);
1122 static int nfs4_wait_for_completion_rpc_task(struct rpc_task
*task
)
1126 ret
= rpc_wait_for_completion_task(task
);
1130 static int can_open_cached(struct nfs4_state
*state
, fmode_t mode
, int open_mode
)
1134 if (open_mode
& (O_EXCL
|O_TRUNC
))
1136 switch (mode
& (FMODE_READ
|FMODE_WRITE
)) {
1138 ret
|= test_bit(NFS_O_RDONLY_STATE
, &state
->flags
) != 0
1139 && state
->n_rdonly
!= 0;
1142 ret
|= test_bit(NFS_O_WRONLY_STATE
, &state
->flags
) != 0
1143 && state
->n_wronly
!= 0;
1145 case FMODE_READ
|FMODE_WRITE
:
1146 ret
|= test_bit(NFS_O_RDWR_STATE
, &state
->flags
) != 0
1147 && state
->n_rdwr
!= 0;
1153 static int can_open_delegated(struct nfs_delegation
*delegation
, fmode_t fmode
,
1154 enum open_claim_type4 claim
)
1156 if (delegation
== NULL
)
1158 if ((delegation
->type
& fmode
) != fmode
)
1160 if (test_bit(NFS_DELEGATION_RETURNING
, &delegation
->flags
))
1163 case NFS4_OPEN_CLAIM_NULL
:
1164 case NFS4_OPEN_CLAIM_FH
:
1166 case NFS4_OPEN_CLAIM_PREVIOUS
:
1167 if (!test_bit(NFS_DELEGATION_NEED_RECLAIM
, &delegation
->flags
))
1172 nfs_mark_delegation_referenced(delegation
);
1176 static void update_open_stateflags(struct nfs4_state
*state
, fmode_t fmode
)
1185 case FMODE_READ
|FMODE_WRITE
:
1188 nfs4_state_set_mode_locked(state
, state
->state
| fmode
);
1191 static void nfs_test_and_clear_all_open_stateid(struct nfs4_state
*state
)
1193 struct nfs_client
*clp
= state
->owner
->so_server
->nfs_client
;
1194 bool need_recover
= false;
1196 if (test_and_clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
) && state
->n_rdonly
)
1197 need_recover
= true;
1198 if (test_and_clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
) && state
->n_wronly
)
1199 need_recover
= true;
1200 if (test_and_clear_bit(NFS_O_RDWR_STATE
, &state
->flags
) && state
->n_rdwr
)
1201 need_recover
= true;
1203 nfs4_state_mark_reclaim_nograce(clp
, state
);
1206 static bool nfs_need_update_open_stateid(struct nfs4_state
*state
,
1207 nfs4_stateid
*stateid
)
1209 if (test_and_set_bit(NFS_OPEN_STATE
, &state
->flags
) == 0)
1211 if (!nfs4_stateid_match_other(stateid
, &state
->open_stateid
)) {
1212 nfs_test_and_clear_all_open_stateid(state
);
1215 if (nfs4_stateid_is_newer(stateid
, &state
->open_stateid
))
1220 static void nfs_resync_open_stateid_locked(struct nfs4_state
*state
)
1222 if (!(state
->n_wronly
|| state
->n_rdonly
|| state
->n_rdwr
))
1224 if (state
->n_wronly
)
1225 set_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1226 if (state
->n_rdonly
)
1227 set_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1229 set_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1230 set_bit(NFS_OPEN_STATE
, &state
->flags
);
1233 static void nfs_clear_open_stateid_locked(struct nfs4_state
*state
,
1234 nfs4_stateid
*arg_stateid
,
1235 nfs4_stateid
*stateid
, fmode_t fmode
)
1237 clear_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1238 switch (fmode
& (FMODE_READ
|FMODE_WRITE
)) {
1240 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1243 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1246 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1247 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1248 clear_bit(NFS_OPEN_STATE
, &state
->flags
);
1250 if (stateid
== NULL
)
1252 /* Handle races with OPEN */
1253 if (!nfs4_stateid_match_other(arg_stateid
, &state
->open_stateid
) ||
1254 (nfs4_stateid_match_other(stateid
, &state
->open_stateid
) &&
1255 !nfs4_stateid_is_newer(stateid
, &state
->open_stateid
))) {
1256 nfs_resync_open_stateid_locked(state
);
1259 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0)
1260 nfs4_stateid_copy(&state
->stateid
, stateid
);
1261 nfs4_stateid_copy(&state
->open_stateid
, stateid
);
1264 static void nfs_clear_open_stateid(struct nfs4_state
*state
,
1265 nfs4_stateid
*arg_stateid
,
1266 nfs4_stateid
*stateid
, fmode_t fmode
)
1268 write_seqlock(&state
->seqlock
);
1269 nfs_clear_open_stateid_locked(state
, arg_stateid
, stateid
, fmode
);
1270 write_sequnlock(&state
->seqlock
);
1271 if (test_bit(NFS_STATE_RECLAIM_NOGRACE
, &state
->flags
))
1272 nfs4_schedule_state_manager(state
->owner
->so_server
->nfs_client
);
1275 static void nfs_set_open_stateid_locked(struct nfs4_state
*state
, nfs4_stateid
*stateid
, fmode_t fmode
)
1279 set_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1282 set_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1284 case FMODE_READ
|FMODE_WRITE
:
1285 set_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1287 if (!nfs_need_update_open_stateid(state
, stateid
))
1289 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0)
1290 nfs4_stateid_copy(&state
->stateid
, stateid
);
1291 nfs4_stateid_copy(&state
->open_stateid
, stateid
);
1294 static void __update_open_stateid(struct nfs4_state
*state
, nfs4_stateid
*open_stateid
, const nfs4_stateid
*deleg_stateid
, fmode_t fmode
)
1297 * Protect the call to nfs4_state_set_mode_locked and
1298 * serialise the stateid update
1300 write_seqlock(&state
->seqlock
);
1301 if (deleg_stateid
!= NULL
) {
1302 nfs4_stateid_copy(&state
->stateid
, deleg_stateid
);
1303 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1305 if (open_stateid
!= NULL
)
1306 nfs_set_open_stateid_locked(state
, open_stateid
, fmode
);
1307 write_sequnlock(&state
->seqlock
);
1308 spin_lock(&state
->owner
->so_lock
);
1309 update_open_stateflags(state
, fmode
);
1310 spin_unlock(&state
->owner
->so_lock
);
1313 static int update_open_stateid(struct nfs4_state
*state
, nfs4_stateid
*open_stateid
, nfs4_stateid
*delegation
, fmode_t fmode
)
1315 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
1316 struct nfs_delegation
*deleg_cur
;
1319 fmode
&= (FMODE_READ
|FMODE_WRITE
);
1322 deleg_cur
= rcu_dereference(nfsi
->delegation
);
1323 if (deleg_cur
== NULL
)
1326 spin_lock(&deleg_cur
->lock
);
1327 if (rcu_dereference(nfsi
->delegation
) != deleg_cur
||
1328 test_bit(NFS_DELEGATION_RETURNING
, &deleg_cur
->flags
) ||
1329 (deleg_cur
->type
& fmode
) != fmode
)
1330 goto no_delegation_unlock
;
1332 if (delegation
== NULL
)
1333 delegation
= &deleg_cur
->stateid
;
1334 else if (!nfs4_stateid_match(&deleg_cur
->stateid
, delegation
))
1335 goto no_delegation_unlock
;
1337 nfs_mark_delegation_referenced(deleg_cur
);
1338 __update_open_stateid(state
, open_stateid
, &deleg_cur
->stateid
, fmode
);
1340 no_delegation_unlock
:
1341 spin_unlock(&deleg_cur
->lock
);
1345 if (!ret
&& open_stateid
!= NULL
) {
1346 __update_open_stateid(state
, open_stateid
, NULL
, fmode
);
1349 if (test_bit(NFS_STATE_RECLAIM_NOGRACE
, &state
->flags
))
1350 nfs4_schedule_state_manager(state
->owner
->so_server
->nfs_client
);
1355 static bool nfs4_update_lock_stateid(struct nfs4_lock_state
*lsp
,
1356 const nfs4_stateid
*stateid
)
1358 struct nfs4_state
*state
= lsp
->ls_state
;
1361 spin_lock(&state
->state_lock
);
1362 if (!nfs4_stateid_match_other(stateid
, &lsp
->ls_stateid
))
1364 if (!nfs4_stateid_is_newer(stateid
, &lsp
->ls_stateid
))
1366 nfs4_stateid_copy(&lsp
->ls_stateid
, stateid
);
1369 spin_unlock(&state
->state_lock
);
1373 static void nfs4_return_incompatible_delegation(struct inode
*inode
, fmode_t fmode
)
1375 struct nfs_delegation
*delegation
;
1378 delegation
= rcu_dereference(NFS_I(inode
)->delegation
);
1379 if (delegation
== NULL
|| (delegation
->type
& fmode
) == fmode
) {
1384 nfs4_inode_return_delegation(inode
);
1387 static struct nfs4_state
*nfs4_try_open_cached(struct nfs4_opendata
*opendata
)
1389 struct nfs4_state
*state
= opendata
->state
;
1390 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
1391 struct nfs_delegation
*delegation
;
1392 int open_mode
= opendata
->o_arg
.open_flags
;
1393 fmode_t fmode
= opendata
->o_arg
.fmode
;
1394 enum open_claim_type4 claim
= opendata
->o_arg
.claim
;
1395 nfs4_stateid stateid
;
1399 spin_lock(&state
->owner
->so_lock
);
1400 if (can_open_cached(state
, fmode
, open_mode
)) {
1401 update_open_stateflags(state
, fmode
);
1402 spin_unlock(&state
->owner
->so_lock
);
1403 goto out_return_state
;
1405 spin_unlock(&state
->owner
->so_lock
);
1407 delegation
= rcu_dereference(nfsi
->delegation
);
1408 if (!can_open_delegated(delegation
, fmode
, claim
)) {
1412 /* Save the delegation */
1413 nfs4_stateid_copy(&stateid
, &delegation
->stateid
);
1415 nfs_release_seqid(opendata
->o_arg
.seqid
);
1416 if (!opendata
->is_recover
) {
1417 ret
= nfs_may_open(state
->inode
, state
->owner
->so_cred
, open_mode
);
1423 /* Try to update the stateid using the delegation */
1424 if (update_open_stateid(state
, NULL
, &stateid
, fmode
))
1425 goto out_return_state
;
1428 return ERR_PTR(ret
);
1430 atomic_inc(&state
->count
);
1435 nfs4_opendata_check_deleg(struct nfs4_opendata
*data
, struct nfs4_state
*state
)
1437 struct nfs_client
*clp
= NFS_SERVER(state
->inode
)->nfs_client
;
1438 struct nfs_delegation
*delegation
;
1439 int delegation_flags
= 0;
1442 delegation
= rcu_dereference(NFS_I(state
->inode
)->delegation
);
1444 delegation_flags
= delegation
->flags
;
1446 if (data
->o_arg
.claim
== NFS4_OPEN_CLAIM_DELEGATE_CUR
) {
1447 pr_err_ratelimited("NFS: Broken NFSv4 server %s is "
1448 "returning a delegation for "
1449 "OPEN(CLAIM_DELEGATE_CUR)\n",
1451 } else if ((delegation_flags
& 1UL<<NFS_DELEGATION_NEED_RECLAIM
) == 0)
1452 nfs_inode_set_delegation(state
->inode
,
1453 data
->owner
->so_cred
,
1456 nfs_inode_reclaim_delegation(state
->inode
,
1457 data
->owner
->so_cred
,
1462 * Check the inode attributes against the CLAIM_PREVIOUS returned attributes
1463 * and update the nfs4_state.
1465 static struct nfs4_state
*
1466 _nfs4_opendata_reclaim_to_nfs4_state(struct nfs4_opendata
*data
)
1468 struct inode
*inode
= data
->state
->inode
;
1469 struct nfs4_state
*state
= data
->state
;
1472 if (!data
->rpc_done
) {
1473 if (data
->rpc_status
) {
1474 ret
= data
->rpc_status
;
1477 /* cached opens have already been processed */
1481 ret
= nfs_refresh_inode(inode
, &data
->f_attr
);
1485 if (data
->o_res
.delegation_type
!= 0)
1486 nfs4_opendata_check_deleg(data
, state
);
1488 update_open_stateid(state
, &data
->o_res
.stateid
, NULL
,
1490 atomic_inc(&state
->count
);
1494 return ERR_PTR(ret
);
1498 static struct nfs4_state
*
1499 _nfs4_opendata_to_nfs4_state(struct nfs4_opendata
*data
)
1501 struct inode
*inode
;
1502 struct nfs4_state
*state
= NULL
;
1505 if (!data
->rpc_done
) {
1506 state
= nfs4_try_open_cached(data
);
1511 if (!(data
->f_attr
.valid
& NFS_ATTR_FATTR
))
1513 inode
= nfs_fhget(data
->dir
->d_sb
, &data
->o_res
.fh
, &data
->f_attr
, data
->f_label
);
1514 ret
= PTR_ERR(inode
);
1518 state
= nfs4_get_open_state(inode
, data
->owner
);
1521 if (data
->o_res
.delegation_type
!= 0)
1522 nfs4_opendata_check_deleg(data
, state
);
1523 update_open_stateid(state
, &data
->o_res
.stateid
, NULL
,
1527 nfs_release_seqid(data
->o_arg
.seqid
);
1532 return ERR_PTR(ret
);
1535 static struct nfs4_state
*
1536 nfs4_opendata_to_nfs4_state(struct nfs4_opendata
*data
)
1538 if (data
->o_arg
.claim
== NFS4_OPEN_CLAIM_PREVIOUS
)
1539 return _nfs4_opendata_reclaim_to_nfs4_state(data
);
1540 return _nfs4_opendata_to_nfs4_state(data
);
1543 static struct nfs_open_context
*nfs4_state_find_open_context(struct nfs4_state
*state
)
1545 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
1546 struct nfs_open_context
*ctx
;
1548 spin_lock(&state
->inode
->i_lock
);
1549 list_for_each_entry(ctx
, &nfsi
->open_files
, list
) {
1550 if (ctx
->state
!= state
)
1552 get_nfs_open_context(ctx
);
1553 spin_unlock(&state
->inode
->i_lock
);
1556 spin_unlock(&state
->inode
->i_lock
);
1557 return ERR_PTR(-ENOENT
);
1560 static struct nfs4_opendata
*nfs4_open_recoverdata_alloc(struct nfs_open_context
*ctx
,
1561 struct nfs4_state
*state
, enum open_claim_type4 claim
)
1563 struct nfs4_opendata
*opendata
;
1565 opendata
= nfs4_opendata_alloc(ctx
->dentry
, state
->owner
, 0, 0,
1566 NULL
, NULL
, claim
, GFP_NOFS
);
1567 if (opendata
== NULL
)
1568 return ERR_PTR(-ENOMEM
);
1569 opendata
->state
= state
;
1570 atomic_inc(&state
->count
);
1574 static int nfs4_open_recover_helper(struct nfs4_opendata
*opendata
, fmode_t fmode
, struct nfs4_state
**res
)
1576 struct nfs4_state
*newstate
;
1579 if ((opendata
->o_arg
.claim
== NFS4_OPEN_CLAIM_DELEGATE_CUR
||
1580 opendata
->o_arg
.claim
== NFS4_OPEN_CLAIM_DELEG_CUR_FH
) &&
1581 (opendata
->o_arg
.u
.delegation_type
& fmode
) != fmode
)
1582 /* This mode can't have been delegated, so we must have
1583 * a valid open_stateid to cover it - not need to reclaim.
1586 opendata
->o_arg
.open_flags
= 0;
1587 opendata
->o_arg
.fmode
= fmode
;
1588 opendata
->o_arg
.share_access
= nfs4_map_atomic_open_share(
1589 NFS_SB(opendata
->dentry
->d_sb
),
1591 memset(&opendata
->o_res
, 0, sizeof(opendata
->o_res
));
1592 memset(&opendata
->c_res
, 0, sizeof(opendata
->c_res
));
1593 nfs4_init_opendata_res(opendata
);
1594 ret
= _nfs4_recover_proc_open(opendata
);
1597 newstate
= nfs4_opendata_to_nfs4_state(opendata
);
1598 if (IS_ERR(newstate
))
1599 return PTR_ERR(newstate
);
1600 nfs4_close_state(newstate
, fmode
);
1605 static int nfs4_open_recover(struct nfs4_opendata
*opendata
, struct nfs4_state
*state
)
1607 struct nfs4_state
*newstate
;
1610 /* Don't trigger recovery in nfs_test_and_clear_all_open_stateid */
1611 clear_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1612 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1613 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1614 /* memory barrier prior to reading state->n_* */
1615 clear_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1616 clear_bit(NFS_OPEN_STATE
, &state
->flags
);
1618 if (state
->n_rdwr
!= 0) {
1619 ret
= nfs4_open_recover_helper(opendata
, FMODE_READ
|FMODE_WRITE
, &newstate
);
1622 if (newstate
!= state
)
1625 if (state
->n_wronly
!= 0) {
1626 ret
= nfs4_open_recover_helper(opendata
, FMODE_WRITE
, &newstate
);
1629 if (newstate
!= state
)
1632 if (state
->n_rdonly
!= 0) {
1633 ret
= nfs4_open_recover_helper(opendata
, FMODE_READ
, &newstate
);
1636 if (newstate
!= state
)
1640 * We may have performed cached opens for all three recoveries.
1641 * Check if we need to update the current stateid.
1643 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0 &&
1644 !nfs4_stateid_match(&state
->stateid
, &state
->open_stateid
)) {
1645 write_seqlock(&state
->seqlock
);
1646 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0)
1647 nfs4_stateid_copy(&state
->stateid
, &state
->open_stateid
);
1648 write_sequnlock(&state
->seqlock
);
1655 * reclaim state on the server after a reboot.
1657 static int _nfs4_do_open_reclaim(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1659 struct nfs_delegation
*delegation
;
1660 struct nfs4_opendata
*opendata
;
1661 fmode_t delegation_type
= 0;
1664 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
,
1665 NFS4_OPEN_CLAIM_PREVIOUS
);
1666 if (IS_ERR(opendata
))
1667 return PTR_ERR(opendata
);
1669 delegation
= rcu_dereference(NFS_I(state
->inode
)->delegation
);
1670 if (delegation
!= NULL
&& test_bit(NFS_DELEGATION_NEED_RECLAIM
, &delegation
->flags
) != 0)
1671 delegation_type
= delegation
->type
;
1673 opendata
->o_arg
.u
.delegation_type
= delegation_type
;
1674 status
= nfs4_open_recover(opendata
, state
);
1675 nfs4_opendata_put(opendata
);
1679 static int nfs4_do_open_reclaim(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1681 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1682 struct nfs4_exception exception
= { };
1685 err
= _nfs4_do_open_reclaim(ctx
, state
);
1686 trace_nfs4_open_reclaim(ctx
, 0, err
);
1687 if (nfs4_clear_cap_atomic_open_v1(server
, err
, &exception
))
1689 if (err
!= -NFS4ERR_DELAY
)
1691 nfs4_handle_exception(server
, err
, &exception
);
1692 } while (exception
.retry
);
1696 static int nfs4_open_reclaim(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
1698 struct nfs_open_context
*ctx
;
1701 ctx
= nfs4_state_find_open_context(state
);
1704 ret
= nfs4_do_open_reclaim(ctx
, state
);
1705 put_nfs_open_context(ctx
);
1709 static int nfs4_handle_delegation_recall_error(struct nfs_server
*server
, struct nfs4_state
*state
, const nfs4_stateid
*stateid
, int err
)
1713 printk(KERN_ERR
"NFS: %s: unhandled error "
1714 "%d.\n", __func__
, err
);
1720 case -NFS4ERR_BADSESSION
:
1721 case -NFS4ERR_BADSLOT
:
1722 case -NFS4ERR_BAD_HIGH_SLOT
:
1723 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
1724 case -NFS4ERR_DEADSESSION
:
1725 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1726 nfs4_schedule_session_recovery(server
->nfs_client
->cl_session
, err
);
1728 case -NFS4ERR_STALE_CLIENTID
:
1729 case -NFS4ERR_STALE_STATEID
:
1730 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1731 case -NFS4ERR_EXPIRED
:
1732 /* Don't recall a delegation if it was lost */
1733 nfs4_schedule_lease_recovery(server
->nfs_client
);
1735 case -NFS4ERR_MOVED
:
1736 nfs4_schedule_migration_recovery(server
);
1738 case -NFS4ERR_LEASE_MOVED
:
1739 nfs4_schedule_lease_moved_recovery(server
->nfs_client
);
1741 case -NFS4ERR_DELEG_REVOKED
:
1742 case -NFS4ERR_ADMIN_REVOKED
:
1743 case -NFS4ERR_BAD_STATEID
:
1744 case -NFS4ERR_OPENMODE
:
1745 nfs_inode_find_state_and_recover(state
->inode
,
1747 nfs4_schedule_stateid_recovery(server
, state
);
1749 case -NFS4ERR_DELAY
:
1750 case -NFS4ERR_GRACE
:
1751 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1755 case -NFS4ERR_DENIED
:
1756 /* kill_proc(fl->fl_pid, SIGLOST, 1); */
1762 int nfs4_open_delegation_recall(struct nfs_open_context
*ctx
, struct nfs4_state
*state
, const nfs4_stateid
*stateid
)
1764 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1765 struct nfs4_opendata
*opendata
;
1768 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
,
1769 NFS4_OPEN_CLAIM_DELEG_CUR_FH
);
1770 if (IS_ERR(opendata
))
1771 return PTR_ERR(opendata
);
1772 nfs4_stateid_copy(&opendata
->o_arg
.u
.delegation
, stateid
);
1773 err
= nfs4_open_recover(opendata
, state
);
1774 nfs4_opendata_put(opendata
);
1775 return nfs4_handle_delegation_recall_error(server
, state
, stateid
, err
);
1778 static void nfs4_open_confirm_prepare(struct rpc_task
*task
, void *calldata
)
1780 struct nfs4_opendata
*data
= calldata
;
1782 nfs40_setup_sequence(data
->o_arg
.server
->nfs_client
->cl_slot_tbl
,
1783 &data
->c_arg
.seq_args
, &data
->c_res
.seq_res
, task
);
1786 static void nfs4_open_confirm_done(struct rpc_task
*task
, void *calldata
)
1788 struct nfs4_opendata
*data
= calldata
;
1790 nfs40_sequence_done(task
, &data
->c_res
.seq_res
);
1792 data
->rpc_status
= task
->tk_status
;
1793 if (data
->rpc_status
== 0) {
1794 nfs4_stateid_copy(&data
->o_res
.stateid
, &data
->c_res
.stateid
);
1795 nfs_confirm_seqid(&data
->owner
->so_seqid
, 0);
1796 renew_lease(data
->o_res
.server
, data
->timestamp
);
1801 static void nfs4_open_confirm_release(void *calldata
)
1803 struct nfs4_opendata
*data
= calldata
;
1804 struct nfs4_state
*state
= NULL
;
1806 /* If this request hasn't been cancelled, do nothing */
1807 if (data
->cancelled
== 0)
1809 /* In case of error, no cleanup! */
1810 if (!data
->rpc_done
)
1812 state
= nfs4_opendata_to_nfs4_state(data
);
1814 nfs4_close_state(state
, data
->o_arg
.fmode
);
1816 nfs4_opendata_put(data
);
1819 static const struct rpc_call_ops nfs4_open_confirm_ops
= {
1820 .rpc_call_prepare
= nfs4_open_confirm_prepare
,
1821 .rpc_call_done
= nfs4_open_confirm_done
,
1822 .rpc_release
= nfs4_open_confirm_release
,
1826 * Note: On error, nfs4_proc_open_confirm will free the struct nfs4_opendata
1828 static int _nfs4_proc_open_confirm(struct nfs4_opendata
*data
)
1830 struct nfs_server
*server
= NFS_SERVER(d_inode(data
->dir
));
1831 struct rpc_task
*task
;
1832 struct rpc_message msg
= {
1833 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_CONFIRM
],
1834 .rpc_argp
= &data
->c_arg
,
1835 .rpc_resp
= &data
->c_res
,
1836 .rpc_cred
= data
->owner
->so_cred
,
1838 struct rpc_task_setup task_setup_data
= {
1839 .rpc_client
= server
->client
,
1840 .rpc_message
= &msg
,
1841 .callback_ops
= &nfs4_open_confirm_ops
,
1842 .callback_data
= data
,
1843 .workqueue
= nfsiod_workqueue
,
1844 .flags
= RPC_TASK_ASYNC
,
1848 nfs4_init_sequence(&data
->c_arg
.seq_args
, &data
->c_res
.seq_res
, 1);
1849 kref_get(&data
->kref
);
1851 data
->rpc_status
= 0;
1852 data
->timestamp
= jiffies
;
1853 task
= rpc_run_task(&task_setup_data
);
1855 return PTR_ERR(task
);
1856 status
= nfs4_wait_for_completion_rpc_task(task
);
1858 data
->cancelled
= 1;
1861 status
= data
->rpc_status
;
1866 static void nfs4_open_prepare(struct rpc_task
*task
, void *calldata
)
1868 struct nfs4_opendata
*data
= calldata
;
1869 struct nfs4_state_owner
*sp
= data
->owner
;
1870 struct nfs_client
*clp
= sp
->so_server
->nfs_client
;
1871 enum open_claim_type4 claim
= data
->o_arg
.claim
;
1873 if (nfs_wait_on_sequence(data
->o_arg
.seqid
, task
) != 0)
1876 * Check if we still need to send an OPEN call, or if we can use
1877 * a delegation instead.
1879 if (data
->state
!= NULL
) {
1880 struct nfs_delegation
*delegation
;
1882 if (can_open_cached(data
->state
, data
->o_arg
.fmode
, data
->o_arg
.open_flags
))
1885 delegation
= rcu_dereference(NFS_I(data
->state
->inode
)->delegation
);
1886 if (can_open_delegated(delegation
, data
->o_arg
.fmode
, claim
))
1887 goto unlock_no_action
;
1890 /* Update client id. */
1891 data
->o_arg
.clientid
= clp
->cl_clientid
;
1895 case NFS4_OPEN_CLAIM_PREVIOUS
:
1896 case NFS4_OPEN_CLAIM_DELEG_CUR_FH
:
1897 case NFS4_OPEN_CLAIM_DELEG_PREV_FH
:
1898 data
->o_arg
.open_bitmap
= &nfs4_open_noattr_bitmap
[0];
1899 case NFS4_OPEN_CLAIM_FH
:
1900 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_NOATTR
];
1901 nfs_copy_fh(&data
->o_res
.fh
, data
->o_arg
.fh
);
1903 data
->timestamp
= jiffies
;
1904 if (nfs4_setup_sequence(data
->o_arg
.server
,
1905 &data
->o_arg
.seq_args
,
1906 &data
->o_res
.seq_res
,
1908 nfs_release_seqid(data
->o_arg
.seqid
);
1910 /* Set the create mode (note dependency on the session type) */
1911 data
->o_arg
.createmode
= NFS4_CREATE_UNCHECKED
;
1912 if (data
->o_arg
.open_flags
& O_EXCL
) {
1913 data
->o_arg
.createmode
= NFS4_CREATE_EXCLUSIVE
;
1914 if (nfs4_has_persistent_session(clp
))
1915 data
->o_arg
.createmode
= NFS4_CREATE_GUARDED
;
1916 else if (clp
->cl_mvops
->minor_version
> 0)
1917 data
->o_arg
.createmode
= NFS4_CREATE_EXCLUSIVE4_1
;
1923 task
->tk_action
= NULL
;
1925 nfs4_sequence_done(task
, &data
->o_res
.seq_res
);
1928 static void nfs4_open_done(struct rpc_task
*task
, void *calldata
)
1930 struct nfs4_opendata
*data
= calldata
;
1932 data
->rpc_status
= task
->tk_status
;
1934 if (!nfs4_sequence_done(task
, &data
->o_res
.seq_res
))
1937 if (task
->tk_status
== 0) {
1938 if (data
->o_res
.f_attr
->valid
& NFS_ATTR_FATTR_TYPE
) {
1939 switch (data
->o_res
.f_attr
->mode
& S_IFMT
) {
1943 data
->rpc_status
= -ELOOP
;
1946 data
->rpc_status
= -EISDIR
;
1949 data
->rpc_status
= -ENOTDIR
;
1952 renew_lease(data
->o_res
.server
, data
->timestamp
);
1953 if (!(data
->o_res
.rflags
& NFS4_OPEN_RESULT_CONFIRM
))
1954 nfs_confirm_seqid(&data
->owner
->so_seqid
, 0);
1959 static void nfs4_open_release(void *calldata
)
1961 struct nfs4_opendata
*data
= calldata
;
1962 struct nfs4_state
*state
= NULL
;
1964 /* If this request hasn't been cancelled, do nothing */
1965 if (data
->cancelled
== 0)
1967 /* In case of error, no cleanup! */
1968 if (data
->rpc_status
!= 0 || !data
->rpc_done
)
1970 /* In case we need an open_confirm, no cleanup! */
1971 if (data
->o_res
.rflags
& NFS4_OPEN_RESULT_CONFIRM
)
1973 state
= nfs4_opendata_to_nfs4_state(data
);
1975 nfs4_close_state(state
, data
->o_arg
.fmode
);
1977 nfs4_opendata_put(data
);
1980 static const struct rpc_call_ops nfs4_open_ops
= {
1981 .rpc_call_prepare
= nfs4_open_prepare
,
1982 .rpc_call_done
= nfs4_open_done
,
1983 .rpc_release
= nfs4_open_release
,
1986 static int nfs4_run_open_task(struct nfs4_opendata
*data
, int isrecover
)
1988 struct inode
*dir
= d_inode(data
->dir
);
1989 struct nfs_server
*server
= NFS_SERVER(dir
);
1990 struct nfs_openargs
*o_arg
= &data
->o_arg
;
1991 struct nfs_openres
*o_res
= &data
->o_res
;
1992 struct rpc_task
*task
;
1993 struct rpc_message msg
= {
1994 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN
],
1997 .rpc_cred
= data
->owner
->so_cred
,
1999 struct rpc_task_setup task_setup_data
= {
2000 .rpc_client
= server
->client
,
2001 .rpc_message
= &msg
,
2002 .callback_ops
= &nfs4_open_ops
,
2003 .callback_data
= data
,
2004 .workqueue
= nfsiod_workqueue
,
2005 .flags
= RPC_TASK_ASYNC
,
2009 nfs4_init_sequence(&o_arg
->seq_args
, &o_res
->seq_res
, 1);
2010 kref_get(&data
->kref
);
2012 data
->rpc_status
= 0;
2013 data
->cancelled
= 0;
2014 data
->is_recover
= 0;
2016 nfs4_set_sequence_privileged(&o_arg
->seq_args
);
2017 data
->is_recover
= 1;
2019 task
= rpc_run_task(&task_setup_data
);
2021 return PTR_ERR(task
);
2022 status
= nfs4_wait_for_completion_rpc_task(task
);
2024 data
->cancelled
= 1;
2027 status
= data
->rpc_status
;
2033 static int _nfs4_recover_proc_open(struct nfs4_opendata
*data
)
2035 struct inode
*dir
= d_inode(data
->dir
);
2036 struct nfs_openres
*o_res
= &data
->o_res
;
2039 status
= nfs4_run_open_task(data
, 1);
2040 if (status
!= 0 || !data
->rpc_done
)
2043 nfs_fattr_map_and_free_names(NFS_SERVER(dir
), &data
->f_attr
);
2045 if (o_res
->rflags
& NFS4_OPEN_RESULT_CONFIRM
) {
2046 status
= _nfs4_proc_open_confirm(data
);
2055 * Additional permission checks in order to distinguish between an
2056 * open for read, and an open for execute. This works around the
2057 * fact that NFSv4 OPEN treats read and execute permissions as being
2059 * Note that in the non-execute case, we want to turn off permission
2060 * checking if we just created a new file (POSIX open() semantics).
2062 static int nfs4_opendata_access(struct rpc_cred
*cred
,
2063 struct nfs4_opendata
*opendata
,
2064 struct nfs4_state
*state
, fmode_t fmode
,
2067 struct nfs_access_entry cache
;
2070 /* access call failed or for some reason the server doesn't
2071 * support any access modes -- defer access call until later */
2072 if (opendata
->o_res
.access_supported
== 0)
2077 * Use openflags to check for exec, because fmode won't
2078 * always have FMODE_EXEC set when file open for exec.
2080 if (openflags
& __FMODE_EXEC
) {
2081 /* ONLY check for exec rights */
2083 } else if ((fmode
& FMODE_READ
) && !opendata
->file_created
)
2087 cache
.jiffies
= jiffies
;
2088 nfs_access_set_mask(&cache
, opendata
->o_res
.access_result
);
2089 nfs_access_add_cache(state
->inode
, &cache
);
2091 if ((mask
& ~cache
.mask
& (MAY_READ
| MAY_EXEC
)) == 0)
2094 /* even though OPEN succeeded, access is denied. Close the file */
2095 nfs4_close_state(state
, fmode
);
2100 * Note: On error, nfs4_proc_open will free the struct nfs4_opendata
2102 static int _nfs4_proc_open(struct nfs4_opendata
*data
)
2104 struct inode
*dir
= d_inode(data
->dir
);
2105 struct nfs_server
*server
= NFS_SERVER(dir
);
2106 struct nfs_openargs
*o_arg
= &data
->o_arg
;
2107 struct nfs_openres
*o_res
= &data
->o_res
;
2110 status
= nfs4_run_open_task(data
, 0);
2111 if (!data
->rpc_done
)
2114 if (status
== -NFS4ERR_BADNAME
&&
2115 !(o_arg
->open_flags
& O_CREAT
))
2120 nfs_fattr_map_and_free_names(server
, &data
->f_attr
);
2122 if (o_arg
->open_flags
& O_CREAT
) {
2123 update_changeattr(dir
, &o_res
->cinfo
);
2124 if (o_arg
->open_flags
& O_EXCL
)
2125 data
->file_created
= 1;
2126 else if (o_res
->cinfo
.before
!= o_res
->cinfo
.after
)
2127 data
->file_created
= 1;
2129 if ((o_res
->rflags
& NFS4_OPEN_RESULT_LOCKTYPE_POSIX
) == 0)
2130 server
->caps
&= ~NFS_CAP_POSIX_LOCK
;
2131 if(o_res
->rflags
& NFS4_OPEN_RESULT_CONFIRM
) {
2132 status
= _nfs4_proc_open_confirm(data
);
2136 if (!(o_res
->f_attr
->valid
& NFS_ATTR_FATTR
))
2137 nfs4_proc_getattr(server
, &o_res
->fh
, o_res
->f_attr
, o_res
->f_label
);
2141 static int nfs4_recover_expired_lease(struct nfs_server
*server
)
2143 return nfs4_client_recover_expired_lease(server
->nfs_client
);
2148 * reclaim state on the server after a network partition.
2149 * Assumes caller holds the appropriate lock
2151 static int _nfs4_open_expired(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
2153 struct nfs4_opendata
*opendata
;
2156 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
,
2157 NFS4_OPEN_CLAIM_FH
);
2158 if (IS_ERR(opendata
))
2159 return PTR_ERR(opendata
);
2160 ret
= nfs4_open_recover(opendata
, state
);
2162 d_drop(ctx
->dentry
);
2163 nfs4_opendata_put(opendata
);
2167 static int nfs4_do_open_expired(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
2169 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
2170 struct nfs4_exception exception
= { };
2174 err
= _nfs4_open_expired(ctx
, state
);
2175 trace_nfs4_open_expired(ctx
, 0, err
);
2176 if (nfs4_clear_cap_atomic_open_v1(server
, err
, &exception
))
2181 case -NFS4ERR_GRACE
:
2182 case -NFS4ERR_DELAY
:
2183 nfs4_handle_exception(server
, err
, &exception
);
2186 } while (exception
.retry
);
2191 static int nfs4_open_expired(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
2193 struct nfs_open_context
*ctx
;
2196 ctx
= nfs4_state_find_open_context(state
);
2199 ret
= nfs4_do_open_expired(ctx
, state
);
2200 put_nfs_open_context(ctx
);
2204 static void nfs_finish_clear_delegation_stateid(struct nfs4_state
*state
)
2206 nfs_remove_bad_delegation(state
->inode
);
2207 write_seqlock(&state
->seqlock
);
2208 nfs4_stateid_copy(&state
->stateid
, &state
->open_stateid
);
2209 write_sequnlock(&state
->seqlock
);
2210 clear_bit(NFS_DELEGATED_STATE
, &state
->flags
);
2213 static void nfs40_clear_delegation_stateid(struct nfs4_state
*state
)
2215 if (rcu_access_pointer(NFS_I(state
->inode
)->delegation
) != NULL
)
2216 nfs_finish_clear_delegation_stateid(state
);
2219 static int nfs40_open_expired(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
2221 /* NFSv4.0 doesn't allow for delegation recovery on open expire */
2222 nfs40_clear_delegation_stateid(state
);
2223 return nfs4_open_expired(sp
, state
);
2226 #if defined(CONFIG_NFS_V4_1)
2227 static void nfs41_check_delegation_stateid(struct nfs4_state
*state
)
2229 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
2230 nfs4_stateid stateid
;
2231 struct nfs_delegation
*delegation
;
2232 struct rpc_cred
*cred
;
2235 /* Get the delegation credential for use by test/free_stateid */
2237 delegation
= rcu_dereference(NFS_I(state
->inode
)->delegation
);
2238 if (delegation
== NULL
) {
2243 nfs4_stateid_copy(&stateid
, &delegation
->stateid
);
2244 cred
= get_rpccred(delegation
->cred
);
2246 status
= nfs41_test_stateid(server
, &stateid
, cred
);
2247 trace_nfs4_test_delegation_stateid(state
, NULL
, status
);
2249 if (status
!= NFS_OK
) {
2250 /* Free the stateid unless the server explicitly
2251 * informs us the stateid is unrecognized. */
2252 if (status
!= -NFS4ERR_BAD_STATEID
)
2253 nfs41_free_stateid(server
, &stateid
, cred
);
2254 nfs_finish_clear_delegation_stateid(state
);
2261 * nfs41_check_open_stateid - possibly free an open stateid
2263 * @state: NFSv4 state for an inode
2265 * Returns NFS_OK if recovery for this stateid is now finished.
2266 * Otherwise a negative NFS4ERR value is returned.
2268 static int nfs41_check_open_stateid(struct nfs4_state
*state
)
2270 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
2271 nfs4_stateid
*stateid
= &state
->open_stateid
;
2272 struct rpc_cred
*cred
= state
->owner
->so_cred
;
2275 /* If a state reset has been done, test_stateid is unneeded */
2276 if ((test_bit(NFS_O_RDONLY_STATE
, &state
->flags
) == 0) &&
2277 (test_bit(NFS_O_WRONLY_STATE
, &state
->flags
) == 0) &&
2278 (test_bit(NFS_O_RDWR_STATE
, &state
->flags
) == 0))
2279 return -NFS4ERR_BAD_STATEID
;
2281 status
= nfs41_test_stateid(server
, stateid
, cred
);
2282 trace_nfs4_test_open_stateid(state
, NULL
, status
);
2283 if (status
!= NFS_OK
) {
2284 /* Free the stateid unless the server explicitly
2285 * informs us the stateid is unrecognized. */
2286 if (status
!= -NFS4ERR_BAD_STATEID
)
2287 nfs41_free_stateid(server
, stateid
, cred
);
2289 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
2290 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
2291 clear_bit(NFS_O_RDWR_STATE
, &state
->flags
);
2292 clear_bit(NFS_OPEN_STATE
, &state
->flags
);
2297 static int nfs41_open_expired(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
2301 nfs41_check_delegation_stateid(state
);
2302 status
= nfs41_check_open_stateid(state
);
2303 if (status
!= NFS_OK
)
2304 status
= nfs4_open_expired(sp
, state
);
2310 * on an EXCLUSIVE create, the server should send back a bitmask with FATTR4-*
2311 * fields corresponding to attributes that were used to store the verifier.
2312 * Make sure we clobber those fields in the later setattr call
2314 static inline void nfs4_exclusive_attrset(struct nfs4_opendata
*opendata
,
2315 struct iattr
*sattr
, struct nfs4_label
**label
)
2317 const u32
*attrset
= opendata
->o_res
.attrset
;
2319 if ((attrset
[1] & FATTR4_WORD1_TIME_ACCESS
) &&
2320 !(sattr
->ia_valid
& ATTR_ATIME_SET
))
2321 sattr
->ia_valid
|= ATTR_ATIME
;
2323 if ((attrset
[1] & FATTR4_WORD1_TIME_MODIFY
) &&
2324 !(sattr
->ia_valid
& ATTR_MTIME_SET
))
2325 sattr
->ia_valid
|= ATTR_MTIME
;
2327 /* Except MODE, it seems harmless of setting twice. */
2328 if ((attrset
[1] & FATTR4_WORD1_MODE
))
2329 sattr
->ia_valid
&= ~ATTR_MODE
;
2331 if (attrset
[2] & FATTR4_WORD2_SECURITY_LABEL
)
2335 static int _nfs4_open_and_get_state(struct nfs4_opendata
*opendata
,
2338 struct nfs_open_context
*ctx
)
2340 struct nfs4_state_owner
*sp
= opendata
->owner
;
2341 struct nfs_server
*server
= sp
->so_server
;
2342 struct dentry
*dentry
;
2343 struct nfs4_state
*state
;
2347 seq
= raw_seqcount_begin(&sp
->so_reclaim_seqcount
);
2349 ret
= _nfs4_proc_open(opendata
);
2353 state
= nfs4_opendata_to_nfs4_state(opendata
);
2354 ret
= PTR_ERR(state
);
2357 if (server
->caps
& NFS_CAP_POSIX_LOCK
)
2358 set_bit(NFS_STATE_POSIX_LOCKS
, &state
->flags
);
2360 dentry
= opendata
->dentry
;
2361 if (d_really_is_negative(dentry
)) {
2362 /* FIXME: Is this d_drop() ever needed? */
2364 dentry
= d_add_unique(dentry
, igrab(state
->inode
));
2365 if (dentry
== NULL
) {
2366 dentry
= opendata
->dentry
;
2367 } else if (dentry
!= ctx
->dentry
) {
2369 ctx
->dentry
= dget(dentry
);
2371 nfs_set_verifier(dentry
,
2372 nfs_save_change_attribute(d_inode(opendata
->dir
)));
2375 ret
= nfs4_opendata_access(sp
->so_cred
, opendata
, state
, fmode
, flags
);
2380 if (d_inode(dentry
) == state
->inode
) {
2381 nfs_inode_attach_open_context(ctx
);
2382 if (read_seqcount_retry(&sp
->so_reclaim_seqcount
, seq
))
2383 nfs4_schedule_stateid_recovery(server
, state
);
2390 * Returns a referenced nfs4_state
2392 static int _nfs4_do_open(struct inode
*dir
,
2393 struct nfs_open_context
*ctx
,
2395 struct iattr
*sattr
,
2396 struct nfs4_label
*label
,
2399 struct nfs4_state_owner
*sp
;
2400 struct nfs4_state
*state
= NULL
;
2401 struct nfs_server
*server
= NFS_SERVER(dir
);
2402 struct nfs4_opendata
*opendata
;
2403 struct dentry
*dentry
= ctx
->dentry
;
2404 struct rpc_cred
*cred
= ctx
->cred
;
2405 struct nfs4_threshold
**ctx_th
= &ctx
->mdsthreshold
;
2406 fmode_t fmode
= ctx
->mode
& (FMODE_READ
|FMODE_WRITE
|FMODE_EXEC
);
2407 enum open_claim_type4 claim
= NFS4_OPEN_CLAIM_NULL
;
2408 struct nfs4_label
*olabel
= NULL
;
2411 /* Protect against reboot recovery conflicts */
2413 sp
= nfs4_get_state_owner(server
, cred
, GFP_KERNEL
);
2415 dprintk("nfs4_do_open: nfs4_get_state_owner failed!\n");
2418 status
= nfs4_recover_expired_lease(server
);
2420 goto err_put_state_owner
;
2421 if (d_really_is_positive(dentry
))
2422 nfs4_return_incompatible_delegation(d_inode(dentry
), fmode
);
2424 if (d_really_is_positive(dentry
))
2425 claim
= NFS4_OPEN_CLAIM_FH
;
2426 opendata
= nfs4_opendata_alloc(dentry
, sp
, fmode
, flags
, sattr
,
2427 label
, claim
, GFP_KERNEL
);
2428 if (opendata
== NULL
)
2429 goto err_put_state_owner
;
2432 olabel
= nfs4_label_alloc(server
, GFP_KERNEL
);
2433 if (IS_ERR(olabel
)) {
2434 status
= PTR_ERR(olabel
);
2435 goto err_opendata_put
;
2439 if (server
->attr_bitmask
[2] & FATTR4_WORD2_MDSTHRESHOLD
) {
2440 if (!opendata
->f_attr
.mdsthreshold
) {
2441 opendata
->f_attr
.mdsthreshold
= pnfs_mdsthreshold_alloc();
2442 if (!opendata
->f_attr
.mdsthreshold
)
2443 goto err_free_label
;
2445 opendata
->o_arg
.open_bitmap
= &nfs4_pnfs_open_bitmap
[0];
2447 if (d_really_is_positive(dentry
))
2448 opendata
->state
= nfs4_get_open_state(d_inode(dentry
), sp
);
2450 status
= _nfs4_open_and_get_state(opendata
, fmode
, flags
, ctx
);
2452 goto err_free_label
;
2455 if ((opendata
->o_arg
.open_flags
& (O_CREAT
|O_EXCL
)) == (O_CREAT
|O_EXCL
) &&
2456 (opendata
->o_arg
.createmode
!= NFS4_CREATE_GUARDED
)) {
2457 nfs4_exclusive_attrset(opendata
, sattr
, &label
);
2459 nfs_fattr_init(opendata
->o_res
.f_attr
);
2460 status
= nfs4_do_setattr(state
->inode
, cred
,
2461 opendata
->o_res
.f_attr
, sattr
,
2462 state
, label
, olabel
);
2464 nfs_setattr_update_inode(state
->inode
, sattr
,
2465 opendata
->o_res
.f_attr
);
2466 nfs_setsecurity(state
->inode
, opendata
->o_res
.f_attr
, olabel
);
2469 if (opened
&& opendata
->file_created
)
2470 *opened
|= FILE_CREATED
;
2472 if (pnfs_use_threshold(ctx_th
, opendata
->f_attr
.mdsthreshold
, server
)) {
2473 *ctx_th
= opendata
->f_attr
.mdsthreshold
;
2474 opendata
->f_attr
.mdsthreshold
= NULL
;
2477 nfs4_label_free(olabel
);
2479 nfs4_opendata_put(opendata
);
2480 nfs4_put_state_owner(sp
);
2483 nfs4_label_free(olabel
);
2485 nfs4_opendata_put(opendata
);
2486 err_put_state_owner
:
2487 nfs4_put_state_owner(sp
);
2493 static struct nfs4_state
*nfs4_do_open(struct inode
*dir
,
2494 struct nfs_open_context
*ctx
,
2496 struct iattr
*sattr
,
2497 struct nfs4_label
*label
,
2500 struct nfs_server
*server
= NFS_SERVER(dir
);
2501 struct nfs4_exception exception
= { };
2502 struct nfs4_state
*res
;
2506 status
= _nfs4_do_open(dir
, ctx
, flags
, sattr
, label
, opened
);
2508 trace_nfs4_open_file(ctx
, flags
, status
);
2511 /* NOTE: BAD_SEQID means the server and client disagree about the
2512 * book-keeping w.r.t. state-changing operations
2513 * (OPEN/CLOSE/LOCK/LOCKU...)
2514 * It is actually a sign of a bug on the client or on the server.
2516 * If we receive a BAD_SEQID error in the particular case of
2517 * doing an OPEN, we assume that nfs_increment_open_seqid() will
2518 * have unhashed the old state_owner for us, and that we can
2519 * therefore safely retry using a new one. We should still warn
2520 * the user though...
2522 if (status
== -NFS4ERR_BAD_SEQID
) {
2523 pr_warn_ratelimited("NFS: v4 server %s "
2524 " returned a bad sequence-id error!\n",
2525 NFS_SERVER(dir
)->nfs_client
->cl_hostname
);
2526 exception
.retry
= 1;
2530 * BAD_STATEID on OPEN means that the server cancelled our
2531 * state before it received the OPEN_CONFIRM.
2532 * Recover by retrying the request as per the discussion
2533 * on Page 181 of RFC3530.
2535 if (status
== -NFS4ERR_BAD_STATEID
) {
2536 exception
.retry
= 1;
2539 if (status
== -EAGAIN
) {
2540 /* We must have found a delegation */
2541 exception
.retry
= 1;
2544 if (nfs4_clear_cap_atomic_open_v1(server
, status
, &exception
))
2546 res
= ERR_PTR(nfs4_handle_exception(server
,
2547 status
, &exception
));
2548 } while (exception
.retry
);
2552 static int _nfs4_do_setattr(struct inode
*inode
, struct rpc_cred
*cred
,
2553 struct nfs_fattr
*fattr
, struct iattr
*sattr
,
2554 struct nfs4_state
*state
, struct nfs4_label
*ilabel
,
2555 struct nfs4_label
*olabel
)
2557 struct nfs_server
*server
= NFS_SERVER(inode
);
2558 struct nfs_setattrargs arg
= {
2559 .fh
= NFS_FH(inode
),
2562 .bitmask
= server
->attr_bitmask
,
2565 struct nfs_setattrres res
= {
2570 struct rpc_message msg
= {
2571 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETATTR
],
2576 unsigned long timestamp
= jiffies
;
2581 arg
.bitmask
= nfs4_bitmask(server
, ilabel
);
2583 arg
.bitmask
= nfs4_bitmask(server
, olabel
);
2585 nfs_fattr_init(fattr
);
2587 /* Servers should only apply open mode checks for file size changes */
2588 truncate
= (sattr
->ia_valid
& ATTR_SIZE
) ? true : false;
2589 fmode
= truncate
? FMODE_WRITE
: FMODE_READ
;
2591 if (nfs4_copy_delegation_stateid(&arg
.stateid
, inode
, fmode
)) {
2592 /* Use that stateid */
2593 } else if (truncate
&& state
!= NULL
) {
2594 struct nfs_lockowner lockowner
= {
2595 .l_owner
= current
->files
,
2596 .l_pid
= current
->tgid
,
2598 if (!nfs4_valid_open_stateid(state
))
2600 if (nfs4_select_rw_stateid(&arg
.stateid
, state
, FMODE_WRITE
,
2601 &lockowner
) == -EIO
)
2604 nfs4_stateid_copy(&arg
.stateid
, &zero_stateid
);
2606 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
2607 if (status
== 0 && state
!= NULL
)
2608 renew_lease(server
, timestamp
);
2612 static int nfs4_do_setattr(struct inode
*inode
, struct rpc_cred
*cred
,
2613 struct nfs_fattr
*fattr
, struct iattr
*sattr
,
2614 struct nfs4_state
*state
, struct nfs4_label
*ilabel
,
2615 struct nfs4_label
*olabel
)
2617 struct nfs_server
*server
= NFS_SERVER(inode
);
2618 struct nfs4_exception exception
= {
2624 err
= _nfs4_do_setattr(inode
, cred
, fattr
, sattr
, state
, ilabel
, olabel
);
2625 trace_nfs4_setattr(inode
, err
);
2627 case -NFS4ERR_OPENMODE
:
2628 if (!(sattr
->ia_valid
& ATTR_SIZE
)) {
2629 pr_warn_once("NFSv4: server %s is incorrectly "
2630 "applying open mode checks to "
2631 "a SETATTR that is not "
2632 "changing file size.\n",
2633 server
->nfs_client
->cl_hostname
);
2635 if (state
&& !(state
->state
& FMODE_WRITE
)) {
2637 if (sattr
->ia_valid
& ATTR_OPEN
)
2642 err
= nfs4_handle_exception(server
, err
, &exception
);
2643 } while (exception
.retry
);
2648 struct nfs4_closedata
{
2649 struct inode
*inode
;
2650 struct nfs4_state
*state
;
2651 struct nfs_closeargs arg
;
2652 struct nfs_closeres res
;
2653 struct nfs_fattr fattr
;
2654 unsigned long timestamp
;
2659 static void nfs4_free_closedata(void *data
)
2661 struct nfs4_closedata
*calldata
= data
;
2662 struct nfs4_state_owner
*sp
= calldata
->state
->owner
;
2663 struct super_block
*sb
= calldata
->state
->inode
->i_sb
;
2666 pnfs_roc_release(calldata
->state
->inode
);
2667 nfs4_put_open_state(calldata
->state
);
2668 nfs_free_seqid(calldata
->arg
.seqid
);
2669 nfs4_put_state_owner(sp
);
2670 nfs_sb_deactive(sb
);
2674 static void nfs4_close_done(struct rpc_task
*task
, void *data
)
2676 struct nfs4_closedata
*calldata
= data
;
2677 struct nfs4_state
*state
= calldata
->state
;
2678 struct nfs_server
*server
= NFS_SERVER(calldata
->inode
);
2679 nfs4_stateid
*res_stateid
= NULL
;
2681 dprintk("%s: begin!\n", __func__
);
2682 if (!nfs4_sequence_done(task
, &calldata
->res
.seq_res
))
2684 trace_nfs4_close(state
, &calldata
->arg
, &calldata
->res
, task
->tk_status
);
2685 /* hmm. we are done with the inode, and in the process of freeing
2686 * the state_owner. we keep this around to process errors
2688 switch (task
->tk_status
) {
2690 res_stateid
= &calldata
->res
.stateid
;
2692 pnfs_roc_set_barrier(state
->inode
,
2693 calldata
->roc_barrier
);
2694 renew_lease(server
, calldata
->timestamp
);
2696 case -NFS4ERR_ADMIN_REVOKED
:
2697 case -NFS4ERR_STALE_STATEID
:
2698 case -NFS4ERR_OLD_STATEID
:
2699 case -NFS4ERR_BAD_STATEID
:
2700 case -NFS4ERR_EXPIRED
:
2701 if (!nfs4_stateid_match(&calldata
->arg
.stateid
,
2702 &state
->open_stateid
)) {
2703 rpc_restart_call_prepare(task
);
2706 if (calldata
->arg
.fmode
== 0)
2709 if (nfs4_async_handle_error(task
, server
, state
, NULL
) == -EAGAIN
) {
2710 rpc_restart_call_prepare(task
);
2714 nfs_clear_open_stateid(state
, &calldata
->arg
.stateid
,
2715 res_stateid
, calldata
->arg
.fmode
);
2717 nfs_release_seqid(calldata
->arg
.seqid
);
2718 nfs_refresh_inode(calldata
->inode
, calldata
->res
.fattr
);
2719 dprintk("%s: done, ret = %d!\n", __func__
, task
->tk_status
);
2722 static void nfs4_close_prepare(struct rpc_task
*task
, void *data
)
2724 struct nfs4_closedata
*calldata
= data
;
2725 struct nfs4_state
*state
= calldata
->state
;
2726 struct inode
*inode
= calldata
->inode
;
2727 bool is_rdonly
, is_wronly
, is_rdwr
;
2730 dprintk("%s: begin!\n", __func__
);
2731 if (nfs_wait_on_sequence(calldata
->arg
.seqid
, task
) != 0)
2734 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_DOWNGRADE
];
2735 spin_lock(&state
->owner
->so_lock
);
2736 is_rdwr
= test_bit(NFS_O_RDWR_STATE
, &state
->flags
);
2737 is_rdonly
= test_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
2738 is_wronly
= test_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
2739 nfs4_stateid_copy(&calldata
->arg
.stateid
, &state
->open_stateid
);
2740 /* Calculate the change in open mode */
2741 calldata
->arg
.fmode
= 0;
2742 if (state
->n_rdwr
== 0) {
2743 if (state
->n_rdonly
== 0)
2744 call_close
|= is_rdonly
;
2746 calldata
->arg
.fmode
|= FMODE_READ
;
2747 if (state
->n_wronly
== 0)
2748 call_close
|= is_wronly
;
2750 calldata
->arg
.fmode
|= FMODE_WRITE
;
2752 calldata
->arg
.fmode
|= FMODE_READ
|FMODE_WRITE
;
2754 if (calldata
->arg
.fmode
== 0)
2755 call_close
|= is_rdwr
;
2757 if (!nfs4_valid_open_stateid(state
))
2759 spin_unlock(&state
->owner
->so_lock
);
2762 /* Note: exit _without_ calling nfs4_close_done */
2766 if (calldata
->arg
.fmode
== 0)
2767 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CLOSE
];
2769 pnfs_roc_get_barrier(inode
, &calldata
->roc_barrier
);
2771 calldata
->arg
.share_access
=
2772 nfs4_map_atomic_open_share(NFS_SERVER(inode
),
2773 calldata
->arg
.fmode
, 0);
2775 nfs_fattr_init(calldata
->res
.fattr
);
2776 calldata
->timestamp
= jiffies
;
2777 if (nfs4_setup_sequence(NFS_SERVER(inode
),
2778 &calldata
->arg
.seq_args
,
2779 &calldata
->res
.seq_res
,
2781 nfs_release_seqid(calldata
->arg
.seqid
);
2782 dprintk("%s: done!\n", __func__
);
2785 task
->tk_action
= NULL
;
2787 nfs4_sequence_done(task
, &calldata
->res
.seq_res
);
2790 static const struct rpc_call_ops nfs4_close_ops
= {
2791 .rpc_call_prepare
= nfs4_close_prepare
,
2792 .rpc_call_done
= nfs4_close_done
,
2793 .rpc_release
= nfs4_free_closedata
,
2796 static bool nfs4_roc(struct inode
*inode
)
2798 if (!nfs_have_layout(inode
))
2800 return pnfs_roc(inode
);
2804 * It is possible for data to be read/written from a mem-mapped file
2805 * after the sys_close call (which hits the vfs layer as a flush).
2806 * This means that we can't safely call nfsv4 close on a file until
2807 * the inode is cleared. This in turn means that we are not good
2808 * NFSv4 citizens - we do not indicate to the server to update the file's
2809 * share state even when we are done with one of the three share
2810 * stateid's in the inode.
2812 * NOTE: Caller must be holding the sp->so_owner semaphore!
2814 int nfs4_do_close(struct nfs4_state
*state
, gfp_t gfp_mask
, int wait
)
2816 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
2817 struct nfs_seqid
*(*alloc_seqid
)(struct nfs_seqid_counter
*, gfp_t
);
2818 struct nfs4_closedata
*calldata
;
2819 struct nfs4_state_owner
*sp
= state
->owner
;
2820 struct rpc_task
*task
;
2821 struct rpc_message msg
= {
2822 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CLOSE
],
2823 .rpc_cred
= state
->owner
->so_cred
,
2825 struct rpc_task_setup task_setup_data
= {
2826 .rpc_client
= server
->client
,
2827 .rpc_message
= &msg
,
2828 .callback_ops
= &nfs4_close_ops
,
2829 .workqueue
= nfsiod_workqueue
,
2830 .flags
= RPC_TASK_ASYNC
,
2832 int status
= -ENOMEM
;
2834 nfs4_state_protect(server
->nfs_client
, NFS_SP4_MACH_CRED_CLEANUP
,
2835 &task_setup_data
.rpc_client
, &msg
);
2837 calldata
= kzalloc(sizeof(*calldata
), gfp_mask
);
2838 if (calldata
== NULL
)
2840 nfs4_init_sequence(&calldata
->arg
.seq_args
, &calldata
->res
.seq_res
, 1);
2841 calldata
->inode
= state
->inode
;
2842 calldata
->state
= state
;
2843 calldata
->arg
.fh
= NFS_FH(state
->inode
);
2844 /* Serialization for the sequence id */
2845 alloc_seqid
= server
->nfs_client
->cl_mvops
->alloc_seqid
;
2846 calldata
->arg
.seqid
= alloc_seqid(&state
->owner
->so_seqid
, gfp_mask
);
2847 if (IS_ERR(calldata
->arg
.seqid
))
2848 goto out_free_calldata
;
2849 calldata
->arg
.fmode
= 0;
2850 calldata
->arg
.bitmask
= server
->cache_consistency_bitmask
;
2851 calldata
->res
.fattr
= &calldata
->fattr
;
2852 calldata
->res
.seqid
= calldata
->arg
.seqid
;
2853 calldata
->res
.server
= server
;
2854 calldata
->roc
= nfs4_roc(state
->inode
);
2855 nfs_sb_active(calldata
->inode
->i_sb
);
2857 msg
.rpc_argp
= &calldata
->arg
;
2858 msg
.rpc_resp
= &calldata
->res
;
2859 task_setup_data
.callback_data
= calldata
;
2860 task
= rpc_run_task(&task_setup_data
);
2862 return PTR_ERR(task
);
2865 status
= rpc_wait_for_completion_task(task
);
2871 nfs4_put_open_state(state
);
2872 nfs4_put_state_owner(sp
);
2876 static struct inode
*
2877 nfs4_atomic_open(struct inode
*dir
, struct nfs_open_context
*ctx
,
2878 int open_flags
, struct iattr
*attr
, int *opened
)
2880 struct nfs4_state
*state
;
2881 struct nfs4_label l
= {0, 0, 0, NULL
}, *label
= NULL
;
2883 label
= nfs4_label_init_security(dir
, ctx
->dentry
, attr
, &l
);
2885 /* Protect against concurrent sillydeletes */
2886 state
= nfs4_do_open(dir
, ctx
, open_flags
, attr
, label
, opened
);
2888 nfs4_label_release_security(label
);
2891 return ERR_CAST(state
);
2892 return state
->inode
;
2895 static void nfs4_close_context(struct nfs_open_context
*ctx
, int is_sync
)
2897 if (ctx
->state
== NULL
)
2900 nfs4_close_sync(ctx
->state
, ctx
->mode
);
2902 nfs4_close_state(ctx
->state
, ctx
->mode
);
2905 #define FATTR4_WORD1_NFS40_MASK (2*FATTR4_WORD1_MOUNTED_ON_FILEID - 1UL)
2906 #define FATTR4_WORD2_NFS41_MASK (2*FATTR4_WORD2_SUPPATTR_EXCLCREAT - 1UL)
2907 #define FATTR4_WORD2_NFS42_MASK (2*FATTR4_WORD2_SECURITY_LABEL - 1UL)
2909 static int _nfs4_server_capabilities(struct nfs_server
*server
, struct nfs_fh
*fhandle
)
2911 u32 bitmask
[3] = {}, minorversion
= server
->nfs_client
->cl_minorversion
;
2912 struct nfs4_server_caps_arg args
= {
2916 struct nfs4_server_caps_res res
= {};
2917 struct rpc_message msg
= {
2918 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SERVER_CAPS
],
2924 bitmask
[0] = FATTR4_WORD0_SUPPORTED_ATTRS
|
2925 FATTR4_WORD0_FH_EXPIRE_TYPE
|
2926 FATTR4_WORD0_LINK_SUPPORT
|
2927 FATTR4_WORD0_SYMLINK_SUPPORT
|
2928 FATTR4_WORD0_ACLSUPPORT
;
2930 bitmask
[2] = FATTR4_WORD2_SUPPATTR_EXCLCREAT
;
2932 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2934 /* Sanity check the server answers */
2935 switch (minorversion
) {
2937 res
.attr_bitmask
[1] &= FATTR4_WORD1_NFS40_MASK
;
2938 res
.attr_bitmask
[2] = 0;
2941 res
.attr_bitmask
[2] &= FATTR4_WORD2_NFS41_MASK
;
2944 res
.attr_bitmask
[2] &= FATTR4_WORD2_NFS42_MASK
;
2946 memcpy(server
->attr_bitmask
, res
.attr_bitmask
, sizeof(server
->attr_bitmask
));
2947 server
->caps
&= ~(NFS_CAP_ACLS
|NFS_CAP_HARDLINKS
|
2948 NFS_CAP_SYMLINKS
|NFS_CAP_FILEID
|
2949 NFS_CAP_MODE
|NFS_CAP_NLINK
|NFS_CAP_OWNER
|
2950 NFS_CAP_OWNER_GROUP
|NFS_CAP_ATIME
|
2951 NFS_CAP_CTIME
|NFS_CAP_MTIME
|
2952 NFS_CAP_SECURITY_LABEL
);
2953 if (res
.attr_bitmask
[0] & FATTR4_WORD0_ACL
&&
2954 res
.acl_bitmask
& ACL4_SUPPORT_ALLOW_ACL
)
2955 server
->caps
|= NFS_CAP_ACLS
;
2956 if (res
.has_links
!= 0)
2957 server
->caps
|= NFS_CAP_HARDLINKS
;
2958 if (res
.has_symlinks
!= 0)
2959 server
->caps
|= NFS_CAP_SYMLINKS
;
2960 if (res
.attr_bitmask
[0] & FATTR4_WORD0_FILEID
)
2961 server
->caps
|= NFS_CAP_FILEID
;
2962 if (res
.attr_bitmask
[1] & FATTR4_WORD1_MODE
)
2963 server
->caps
|= NFS_CAP_MODE
;
2964 if (res
.attr_bitmask
[1] & FATTR4_WORD1_NUMLINKS
)
2965 server
->caps
|= NFS_CAP_NLINK
;
2966 if (res
.attr_bitmask
[1] & FATTR4_WORD1_OWNER
)
2967 server
->caps
|= NFS_CAP_OWNER
;
2968 if (res
.attr_bitmask
[1] & FATTR4_WORD1_OWNER_GROUP
)
2969 server
->caps
|= NFS_CAP_OWNER_GROUP
;
2970 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_ACCESS
)
2971 server
->caps
|= NFS_CAP_ATIME
;
2972 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_METADATA
)
2973 server
->caps
|= NFS_CAP_CTIME
;
2974 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_MODIFY
)
2975 server
->caps
|= NFS_CAP_MTIME
;
2976 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
2977 if (res
.attr_bitmask
[2] & FATTR4_WORD2_SECURITY_LABEL
)
2978 server
->caps
|= NFS_CAP_SECURITY_LABEL
;
2980 memcpy(server
->attr_bitmask_nl
, res
.attr_bitmask
,
2981 sizeof(server
->attr_bitmask
));
2982 server
->attr_bitmask_nl
[2] &= ~FATTR4_WORD2_SECURITY_LABEL
;
2984 memcpy(server
->cache_consistency_bitmask
, res
.attr_bitmask
, sizeof(server
->cache_consistency_bitmask
));
2985 server
->cache_consistency_bitmask
[0] &= FATTR4_WORD0_CHANGE
|FATTR4_WORD0_SIZE
;
2986 server
->cache_consistency_bitmask
[1] &= FATTR4_WORD1_TIME_METADATA
|FATTR4_WORD1_TIME_MODIFY
;
2987 server
->cache_consistency_bitmask
[2] = 0;
2988 memcpy(server
->exclcreat_bitmask
, res
.exclcreat_bitmask
,
2989 sizeof(server
->exclcreat_bitmask
));
2990 server
->acl_bitmask
= res
.acl_bitmask
;
2991 server
->fh_expire_type
= res
.fh_expire_type
;
2997 int nfs4_server_capabilities(struct nfs_server
*server
, struct nfs_fh
*fhandle
)
2999 struct nfs4_exception exception
= { };
3002 err
= nfs4_handle_exception(server
,
3003 _nfs4_server_capabilities(server
, fhandle
),
3005 } while (exception
.retry
);
3009 static int _nfs4_lookup_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3010 struct nfs_fsinfo
*info
)
3013 struct nfs4_lookup_root_arg args
= {
3016 struct nfs4_lookup_res res
= {
3018 .fattr
= info
->fattr
,
3021 struct rpc_message msg
= {
3022 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOOKUP_ROOT
],
3027 bitmask
[0] = nfs4_fattr_bitmap
[0];
3028 bitmask
[1] = nfs4_fattr_bitmap
[1];
3030 * Process the label in the upcoming getfattr
3032 bitmask
[2] = nfs4_fattr_bitmap
[2] & ~FATTR4_WORD2_SECURITY_LABEL
;
3034 nfs_fattr_init(info
->fattr
);
3035 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3038 static int nfs4_lookup_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3039 struct nfs_fsinfo
*info
)
3041 struct nfs4_exception exception
= { };
3044 err
= _nfs4_lookup_root(server
, fhandle
, info
);
3045 trace_nfs4_lookup_root(server
, fhandle
, info
->fattr
, err
);
3048 case -NFS4ERR_WRONGSEC
:
3051 err
= nfs4_handle_exception(server
, err
, &exception
);
3053 } while (exception
.retry
);
3058 static int nfs4_lookup_root_sec(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3059 struct nfs_fsinfo
*info
, rpc_authflavor_t flavor
)
3061 struct rpc_auth_create_args auth_args
= {
3062 .pseudoflavor
= flavor
,
3064 struct rpc_auth
*auth
;
3067 auth
= rpcauth_create(&auth_args
, server
->client
);
3072 ret
= nfs4_lookup_root(server
, fhandle
, info
);
3078 * Retry pseudoroot lookup with various security flavors. We do this when:
3080 * NFSv4.0: the PUTROOTFH operation returns NFS4ERR_WRONGSEC
3081 * NFSv4.1: the server does not support the SECINFO_NO_NAME operation
3083 * Returns zero on success, or a negative NFS4ERR value, or a
3084 * negative errno value.
3086 static int nfs4_find_root_sec(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3087 struct nfs_fsinfo
*info
)
3089 /* Per 3530bis 15.33.5 */
3090 static const rpc_authflavor_t flav_array
[] = {
3094 RPC_AUTH_UNIX
, /* courtesy */
3097 int status
= -EPERM
;
3100 if (server
->auth_info
.flavor_len
> 0) {
3101 /* try each flavor specified by user */
3102 for (i
= 0; i
< server
->auth_info
.flavor_len
; i
++) {
3103 status
= nfs4_lookup_root_sec(server
, fhandle
, info
,
3104 server
->auth_info
.flavors
[i
]);
3105 if (status
== -NFS4ERR_WRONGSEC
|| status
== -EACCES
)
3110 /* no flavors specified by user, try default list */
3111 for (i
= 0; i
< ARRAY_SIZE(flav_array
); i
++) {
3112 status
= nfs4_lookup_root_sec(server
, fhandle
, info
,
3114 if (status
== -NFS4ERR_WRONGSEC
|| status
== -EACCES
)
3121 * -EACCESS could mean that the user doesn't have correct permissions
3122 * to access the mount. It could also mean that we tried to mount
3123 * with a gss auth flavor, but rpc.gssd isn't running. Either way,
3124 * existing mount programs don't handle -EACCES very well so it should
3125 * be mapped to -EPERM instead.
3127 if (status
== -EACCES
)
3132 static int nfs4_do_find_root_sec(struct nfs_server
*server
,
3133 struct nfs_fh
*fhandle
, struct nfs_fsinfo
*info
)
3135 int mv
= server
->nfs_client
->cl_minorversion
;
3136 return nfs_v4_minor_ops
[mv
]->find_root_sec(server
, fhandle
, info
);
3140 * nfs4_proc_get_rootfh - get file handle for server's pseudoroot
3141 * @server: initialized nfs_server handle
3142 * @fhandle: we fill in the pseudo-fs root file handle
3143 * @info: we fill in an FSINFO struct
3144 * @auth_probe: probe the auth flavours
3146 * Returns zero on success, or a negative errno.
3148 int nfs4_proc_get_rootfh(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3149 struct nfs_fsinfo
*info
,
3155 status
= nfs4_lookup_root(server
, fhandle
, info
);
3157 if (auth_probe
|| status
== NFS4ERR_WRONGSEC
)
3158 status
= nfs4_do_find_root_sec(server
, fhandle
, info
);
3161 status
= nfs4_server_capabilities(server
, fhandle
);
3163 status
= nfs4_do_fsinfo(server
, fhandle
, info
);
3165 return nfs4_map_errors(status
);
3168 static int nfs4_proc_get_root(struct nfs_server
*server
, struct nfs_fh
*mntfh
,
3169 struct nfs_fsinfo
*info
)
3172 struct nfs_fattr
*fattr
= info
->fattr
;
3173 struct nfs4_label
*label
= NULL
;
3175 error
= nfs4_server_capabilities(server
, mntfh
);
3177 dprintk("nfs4_get_root: getcaps error = %d\n", -error
);
3181 label
= nfs4_label_alloc(server
, GFP_KERNEL
);
3183 return PTR_ERR(label
);
3185 error
= nfs4_proc_getattr(server
, mntfh
, fattr
, label
);
3187 dprintk("nfs4_get_root: getattr error = %d\n", -error
);
3188 goto err_free_label
;
3191 if (fattr
->valid
& NFS_ATTR_FATTR_FSID
&&
3192 !nfs_fsid_equal(&server
->fsid
, &fattr
->fsid
))
3193 memcpy(&server
->fsid
, &fattr
->fsid
, sizeof(server
->fsid
));
3196 nfs4_label_free(label
);
3202 * Get locations and (maybe) other attributes of a referral.
3203 * Note that we'll actually follow the referral later when
3204 * we detect fsid mismatch in inode revalidation
3206 static int nfs4_get_referral(struct rpc_clnt
*client
, struct inode
*dir
,
3207 const struct qstr
*name
, struct nfs_fattr
*fattr
,
3208 struct nfs_fh
*fhandle
)
3210 int status
= -ENOMEM
;
3211 struct page
*page
= NULL
;
3212 struct nfs4_fs_locations
*locations
= NULL
;
3214 page
= alloc_page(GFP_KERNEL
);
3217 locations
= kmalloc(sizeof(struct nfs4_fs_locations
), GFP_KERNEL
);
3218 if (locations
== NULL
)
3221 status
= nfs4_proc_fs_locations(client
, dir
, name
, locations
, page
);
3226 * If the fsid didn't change, this is a migration event, not a
3227 * referral. Cause us to drop into the exception handler, which
3228 * will kick off migration recovery.
3230 if (nfs_fsid_equal(&NFS_SERVER(dir
)->fsid
, &locations
->fattr
.fsid
)) {
3231 dprintk("%s: server did not return a different fsid for"
3232 " a referral at %s\n", __func__
, name
->name
);
3233 status
= -NFS4ERR_MOVED
;
3236 /* Fixup attributes for the nfs_lookup() call to nfs_fhget() */
3237 nfs_fixup_referral_attributes(&locations
->fattr
);
3239 /* replace the lookup nfs_fattr with the locations nfs_fattr */
3240 memcpy(fattr
, &locations
->fattr
, sizeof(struct nfs_fattr
));
3241 memset(fhandle
, 0, sizeof(struct nfs_fh
));
3249 static int _nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3250 struct nfs_fattr
*fattr
, struct nfs4_label
*label
)
3252 struct nfs4_getattr_arg args
= {
3254 .bitmask
= server
->attr_bitmask
,
3256 struct nfs4_getattr_res res
= {
3261 struct rpc_message msg
= {
3262 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETATTR
],
3267 args
.bitmask
= nfs4_bitmask(server
, label
);
3269 nfs_fattr_init(fattr
);
3270 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3273 static int nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3274 struct nfs_fattr
*fattr
, struct nfs4_label
*label
)
3276 struct nfs4_exception exception
= { };
3279 err
= _nfs4_proc_getattr(server
, fhandle
, fattr
, label
);
3280 trace_nfs4_getattr(server
, fhandle
, fattr
, err
);
3281 err
= nfs4_handle_exception(server
, err
,
3283 } while (exception
.retry
);
3288 * The file is not closed if it is opened due to the a request to change
3289 * the size of the file. The open call will not be needed once the
3290 * VFS layer lookup-intents are implemented.
3292 * Close is called when the inode is destroyed.
3293 * If we haven't opened the file for O_WRONLY, we
3294 * need to in the size_change case to obtain a stateid.
3297 * Because OPEN is always done by name in nfsv4, it is
3298 * possible that we opened a different file by the same
3299 * name. We can recognize this race condition, but we
3300 * can't do anything about it besides returning an error.
3302 * This will be fixed with VFS changes (lookup-intent).
3305 nfs4_proc_setattr(struct dentry
*dentry
, struct nfs_fattr
*fattr
,
3306 struct iattr
*sattr
)
3308 struct inode
*inode
= d_inode(dentry
);
3309 struct rpc_cred
*cred
= NULL
;
3310 struct nfs4_state
*state
= NULL
;
3311 struct nfs4_label
*label
= NULL
;
3314 if (pnfs_ld_layoutret_on_setattr(inode
) &&
3315 sattr
->ia_valid
& ATTR_SIZE
&&
3316 sattr
->ia_size
< i_size_read(inode
))
3317 pnfs_commit_and_return_layout(inode
);
3319 nfs_fattr_init(fattr
);
3321 /* Deal with open(O_TRUNC) */
3322 if (sattr
->ia_valid
& ATTR_OPEN
)
3323 sattr
->ia_valid
&= ~(ATTR_MTIME
|ATTR_CTIME
);
3325 /* Optimization: if the end result is no change, don't RPC */
3326 if ((sattr
->ia_valid
& ~(ATTR_FILE
|ATTR_OPEN
)) == 0)
3329 /* Search for an existing open(O_WRITE) file */
3330 if (sattr
->ia_valid
& ATTR_FILE
) {
3331 struct nfs_open_context
*ctx
;
3333 ctx
= nfs_file_open_context(sattr
->ia_file
);
3340 label
= nfs4_label_alloc(NFS_SERVER(inode
), GFP_KERNEL
);
3342 return PTR_ERR(label
);
3344 status
= nfs4_do_setattr(inode
, cred
, fattr
, sattr
, state
, NULL
, label
);
3346 nfs_setattr_update_inode(inode
, sattr
, fattr
);
3347 nfs_setsecurity(inode
, fattr
, label
);
3349 nfs4_label_free(label
);
3353 static int _nfs4_proc_lookup(struct rpc_clnt
*clnt
, struct inode
*dir
,
3354 const struct qstr
*name
, struct nfs_fh
*fhandle
,
3355 struct nfs_fattr
*fattr
, struct nfs4_label
*label
)
3357 struct nfs_server
*server
= NFS_SERVER(dir
);
3359 struct nfs4_lookup_arg args
= {
3360 .bitmask
= server
->attr_bitmask
,
3361 .dir_fh
= NFS_FH(dir
),
3364 struct nfs4_lookup_res res
= {
3370 struct rpc_message msg
= {
3371 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOOKUP
],
3376 args
.bitmask
= nfs4_bitmask(server
, label
);
3378 nfs_fattr_init(fattr
);
3380 dprintk("NFS call lookup %s\n", name
->name
);
3381 status
= nfs4_call_sync(clnt
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3382 dprintk("NFS reply lookup: %d\n", status
);
3386 static void nfs_fixup_secinfo_attributes(struct nfs_fattr
*fattr
)
3388 fattr
->valid
|= NFS_ATTR_FATTR_TYPE
| NFS_ATTR_FATTR_MODE
|
3389 NFS_ATTR_FATTR_NLINK
| NFS_ATTR_FATTR_MOUNTPOINT
;
3390 fattr
->mode
= S_IFDIR
| S_IRUGO
| S_IXUGO
;
3394 static int nfs4_proc_lookup_common(struct rpc_clnt
**clnt
, struct inode
*dir
,
3395 struct qstr
*name
, struct nfs_fh
*fhandle
,
3396 struct nfs_fattr
*fattr
, struct nfs4_label
*label
)
3398 struct nfs4_exception exception
= { };
3399 struct rpc_clnt
*client
= *clnt
;
3402 err
= _nfs4_proc_lookup(client
, dir
, name
, fhandle
, fattr
, label
);
3403 trace_nfs4_lookup(dir
, name
, err
);
3405 case -NFS4ERR_BADNAME
:
3408 case -NFS4ERR_MOVED
:
3409 err
= nfs4_get_referral(client
, dir
, name
, fattr
, fhandle
);
3410 if (err
== -NFS4ERR_MOVED
)
3411 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
, &exception
);
3413 case -NFS4ERR_WRONGSEC
:
3415 if (client
!= *clnt
)
3417 client
= nfs4_negotiate_security(client
, dir
, name
);
3419 return PTR_ERR(client
);
3421 exception
.retry
= 1;
3424 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
, &exception
);
3426 } while (exception
.retry
);
3431 else if (client
!= *clnt
)
3432 rpc_shutdown_client(client
);
3437 static int nfs4_proc_lookup(struct inode
*dir
, struct qstr
*name
,
3438 struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
,
3439 struct nfs4_label
*label
)
3442 struct rpc_clnt
*client
= NFS_CLIENT(dir
);
3444 status
= nfs4_proc_lookup_common(&client
, dir
, name
, fhandle
, fattr
, label
);
3445 if (client
!= NFS_CLIENT(dir
)) {
3446 rpc_shutdown_client(client
);
3447 nfs_fixup_secinfo_attributes(fattr
);
3453 nfs4_proc_lookup_mountpoint(struct inode
*dir
, struct qstr
*name
,
3454 struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
3456 struct rpc_clnt
*client
= NFS_CLIENT(dir
);
3459 status
= nfs4_proc_lookup_common(&client
, dir
, name
, fhandle
, fattr
, NULL
);
3461 return ERR_PTR(status
);
3462 return (client
== NFS_CLIENT(dir
)) ? rpc_clone_client(client
) : client
;
3465 static int _nfs4_proc_access(struct inode
*inode
, struct nfs_access_entry
*entry
)
3467 struct nfs_server
*server
= NFS_SERVER(inode
);
3468 struct nfs4_accessargs args
= {
3469 .fh
= NFS_FH(inode
),
3470 .bitmask
= server
->cache_consistency_bitmask
,
3472 struct nfs4_accessres res
= {
3475 struct rpc_message msg
= {
3476 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_ACCESS
],
3479 .rpc_cred
= entry
->cred
,
3481 int mode
= entry
->mask
;
3485 * Determine which access bits we want to ask for...
3487 if (mode
& MAY_READ
)
3488 args
.access
|= NFS4_ACCESS_READ
;
3489 if (S_ISDIR(inode
->i_mode
)) {
3490 if (mode
& MAY_WRITE
)
3491 args
.access
|= NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
| NFS4_ACCESS_DELETE
;
3492 if (mode
& MAY_EXEC
)
3493 args
.access
|= NFS4_ACCESS_LOOKUP
;
3495 if (mode
& MAY_WRITE
)
3496 args
.access
|= NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
;
3497 if (mode
& MAY_EXEC
)
3498 args
.access
|= NFS4_ACCESS_EXECUTE
;
3501 res
.fattr
= nfs_alloc_fattr();
3502 if (res
.fattr
== NULL
)
3505 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3507 nfs_access_set_mask(entry
, res
.access
);
3508 nfs_refresh_inode(inode
, res
.fattr
);
3510 nfs_free_fattr(res
.fattr
);
3514 static int nfs4_proc_access(struct inode
*inode
, struct nfs_access_entry
*entry
)
3516 struct nfs4_exception exception
= { };
3519 err
= _nfs4_proc_access(inode
, entry
);
3520 trace_nfs4_access(inode
, err
);
3521 err
= nfs4_handle_exception(NFS_SERVER(inode
), err
,
3523 } while (exception
.retry
);
3528 * TODO: For the time being, we don't try to get any attributes
3529 * along with any of the zero-copy operations READ, READDIR,
3532 * In the case of the first three, we want to put the GETATTR
3533 * after the read-type operation -- this is because it is hard
3534 * to predict the length of a GETATTR response in v4, and thus
3535 * align the READ data correctly. This means that the GETATTR
3536 * may end up partially falling into the page cache, and we should
3537 * shift it into the 'tail' of the xdr_buf before processing.
3538 * To do this efficiently, we need to know the total length
3539 * of data received, which doesn't seem to be available outside
3542 * In the case of WRITE, we also want to put the GETATTR after
3543 * the operation -- in this case because we want to make sure
3544 * we get the post-operation mtime and size.
3546 * Both of these changes to the XDR layer would in fact be quite
3547 * minor, but I decided to leave them for a subsequent patch.
3549 static int _nfs4_proc_readlink(struct inode
*inode
, struct page
*page
,
3550 unsigned int pgbase
, unsigned int pglen
)
3552 struct nfs4_readlink args
= {
3553 .fh
= NFS_FH(inode
),
3558 struct nfs4_readlink_res res
;
3559 struct rpc_message msg
= {
3560 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READLINK
],
3565 return nfs4_call_sync(NFS_SERVER(inode
)->client
, NFS_SERVER(inode
), &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3568 static int nfs4_proc_readlink(struct inode
*inode
, struct page
*page
,
3569 unsigned int pgbase
, unsigned int pglen
)
3571 struct nfs4_exception exception
= { };
3574 err
= _nfs4_proc_readlink(inode
, page
, pgbase
, pglen
);
3575 trace_nfs4_readlink(inode
, err
);
3576 err
= nfs4_handle_exception(NFS_SERVER(inode
), err
,
3578 } while (exception
.retry
);
3583 * This is just for mknod. open(O_CREAT) will always do ->open_context().
3586 nfs4_proc_create(struct inode
*dir
, struct dentry
*dentry
, struct iattr
*sattr
,
3589 struct nfs4_label l
, *ilabel
= NULL
;
3590 struct nfs_open_context
*ctx
;
3591 struct nfs4_state
*state
;
3594 ctx
= alloc_nfs_open_context(dentry
, FMODE_READ
);
3596 return PTR_ERR(ctx
);
3598 ilabel
= nfs4_label_init_security(dir
, dentry
, sattr
, &l
);
3600 sattr
->ia_mode
&= ~current_umask();
3601 state
= nfs4_do_open(dir
, ctx
, flags
, sattr
, ilabel
, NULL
);
3602 if (IS_ERR(state
)) {
3603 status
= PTR_ERR(state
);
3607 nfs4_label_release_security(ilabel
);
3608 put_nfs_open_context(ctx
);
3612 static int _nfs4_proc_remove(struct inode
*dir
, struct qstr
*name
)
3614 struct nfs_server
*server
= NFS_SERVER(dir
);
3615 struct nfs_removeargs args
= {
3619 struct nfs_removeres res
= {
3622 struct rpc_message msg
= {
3623 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_REMOVE
],
3629 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 1);
3631 update_changeattr(dir
, &res
.cinfo
);
3635 static int nfs4_proc_remove(struct inode
*dir
, struct qstr
*name
)
3637 struct nfs4_exception exception
= { };
3640 err
= _nfs4_proc_remove(dir
, name
);
3641 trace_nfs4_remove(dir
, name
, err
);
3642 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
3644 } while (exception
.retry
);
3648 static void nfs4_proc_unlink_setup(struct rpc_message
*msg
, struct inode
*dir
)
3650 struct nfs_server
*server
= NFS_SERVER(dir
);
3651 struct nfs_removeargs
*args
= msg
->rpc_argp
;
3652 struct nfs_removeres
*res
= msg
->rpc_resp
;
3654 res
->server
= server
;
3655 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_REMOVE
];
3656 nfs4_init_sequence(&args
->seq_args
, &res
->seq_res
, 1);
3658 nfs_fattr_init(res
->dir_attr
);
3661 static void nfs4_proc_unlink_rpc_prepare(struct rpc_task
*task
, struct nfs_unlinkdata
*data
)
3663 nfs4_setup_sequence(NFS_SERVER(data
->dir
),
3664 &data
->args
.seq_args
,
3669 static int nfs4_proc_unlink_done(struct rpc_task
*task
, struct inode
*dir
)
3671 struct nfs_unlinkdata
*data
= task
->tk_calldata
;
3672 struct nfs_removeres
*res
= &data
->res
;
3674 if (!nfs4_sequence_done(task
, &res
->seq_res
))
3676 if (nfs4_async_handle_error(task
, res
->server
, NULL
,
3677 &data
->timeout
) == -EAGAIN
)
3679 update_changeattr(dir
, &res
->cinfo
);
3683 static void nfs4_proc_rename_setup(struct rpc_message
*msg
, struct inode
*dir
)
3685 struct nfs_server
*server
= NFS_SERVER(dir
);
3686 struct nfs_renameargs
*arg
= msg
->rpc_argp
;
3687 struct nfs_renameres
*res
= msg
->rpc_resp
;
3689 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENAME
];
3690 res
->server
= server
;
3691 nfs4_init_sequence(&arg
->seq_args
, &res
->seq_res
, 1);
3694 static void nfs4_proc_rename_rpc_prepare(struct rpc_task
*task
, struct nfs_renamedata
*data
)
3696 nfs4_setup_sequence(NFS_SERVER(data
->old_dir
),
3697 &data
->args
.seq_args
,
3702 static int nfs4_proc_rename_done(struct rpc_task
*task
, struct inode
*old_dir
,
3703 struct inode
*new_dir
)
3705 struct nfs_renamedata
*data
= task
->tk_calldata
;
3706 struct nfs_renameres
*res
= &data
->res
;
3708 if (!nfs4_sequence_done(task
, &res
->seq_res
))
3710 if (nfs4_async_handle_error(task
, res
->server
, NULL
, &data
->timeout
) == -EAGAIN
)
3713 update_changeattr(old_dir
, &res
->old_cinfo
);
3714 update_changeattr(new_dir
, &res
->new_cinfo
);
3718 static int _nfs4_proc_link(struct inode
*inode
, struct inode
*dir
, struct qstr
*name
)
3720 struct nfs_server
*server
= NFS_SERVER(inode
);
3721 struct nfs4_link_arg arg
= {
3722 .fh
= NFS_FH(inode
),
3723 .dir_fh
= NFS_FH(dir
),
3725 .bitmask
= server
->attr_bitmask
,
3727 struct nfs4_link_res res
= {
3731 struct rpc_message msg
= {
3732 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LINK
],
3736 int status
= -ENOMEM
;
3738 res
.fattr
= nfs_alloc_fattr();
3739 if (res
.fattr
== NULL
)
3742 res
.label
= nfs4_label_alloc(server
, GFP_KERNEL
);
3743 if (IS_ERR(res
.label
)) {
3744 status
= PTR_ERR(res
.label
);
3747 arg
.bitmask
= nfs4_bitmask(server
, res
.label
);
3749 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
3751 update_changeattr(dir
, &res
.cinfo
);
3752 status
= nfs_post_op_update_inode(inode
, res
.fattr
);
3754 nfs_setsecurity(inode
, res
.fattr
, res
.label
);
3758 nfs4_label_free(res
.label
);
3761 nfs_free_fattr(res
.fattr
);
3765 static int nfs4_proc_link(struct inode
*inode
, struct inode
*dir
, struct qstr
*name
)
3767 struct nfs4_exception exception
= { };
3770 err
= nfs4_handle_exception(NFS_SERVER(inode
),
3771 _nfs4_proc_link(inode
, dir
, name
),
3773 } while (exception
.retry
);
3777 struct nfs4_createdata
{
3778 struct rpc_message msg
;
3779 struct nfs4_create_arg arg
;
3780 struct nfs4_create_res res
;
3782 struct nfs_fattr fattr
;
3783 struct nfs4_label
*label
;
3786 static struct nfs4_createdata
*nfs4_alloc_createdata(struct inode
*dir
,
3787 struct qstr
*name
, struct iattr
*sattr
, u32 ftype
)
3789 struct nfs4_createdata
*data
;
3791 data
= kzalloc(sizeof(*data
), GFP_KERNEL
);
3793 struct nfs_server
*server
= NFS_SERVER(dir
);
3795 data
->label
= nfs4_label_alloc(server
, GFP_KERNEL
);
3796 if (IS_ERR(data
->label
))
3799 data
->msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CREATE
];
3800 data
->msg
.rpc_argp
= &data
->arg
;
3801 data
->msg
.rpc_resp
= &data
->res
;
3802 data
->arg
.dir_fh
= NFS_FH(dir
);
3803 data
->arg
.server
= server
;
3804 data
->arg
.name
= name
;
3805 data
->arg
.attrs
= sattr
;
3806 data
->arg
.ftype
= ftype
;
3807 data
->arg
.bitmask
= nfs4_bitmask(server
, data
->label
);
3808 data
->res
.server
= server
;
3809 data
->res
.fh
= &data
->fh
;
3810 data
->res
.fattr
= &data
->fattr
;
3811 data
->res
.label
= data
->label
;
3812 nfs_fattr_init(data
->res
.fattr
);
3820 static int nfs4_do_create(struct inode
*dir
, struct dentry
*dentry
, struct nfs4_createdata
*data
)
3822 int status
= nfs4_call_sync(NFS_SERVER(dir
)->client
, NFS_SERVER(dir
), &data
->msg
,
3823 &data
->arg
.seq_args
, &data
->res
.seq_res
, 1);
3825 update_changeattr(dir
, &data
->res
.dir_cinfo
);
3826 status
= nfs_instantiate(dentry
, data
->res
.fh
, data
->res
.fattr
, data
->res
.label
);
3831 static void nfs4_free_createdata(struct nfs4_createdata
*data
)
3833 nfs4_label_free(data
->label
);
3837 static int _nfs4_proc_symlink(struct inode
*dir
, struct dentry
*dentry
,
3838 struct page
*page
, unsigned int len
, struct iattr
*sattr
,
3839 struct nfs4_label
*label
)
3841 struct nfs4_createdata
*data
;
3842 int status
= -ENAMETOOLONG
;
3844 if (len
> NFS4_MAXPATHLEN
)
3848 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4LNK
);
3852 data
->msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SYMLINK
];
3853 data
->arg
.u
.symlink
.pages
= &page
;
3854 data
->arg
.u
.symlink
.len
= len
;
3855 data
->arg
.label
= label
;
3857 status
= nfs4_do_create(dir
, dentry
, data
);
3859 nfs4_free_createdata(data
);
3864 static int nfs4_proc_symlink(struct inode
*dir
, struct dentry
*dentry
,
3865 struct page
*page
, unsigned int len
, struct iattr
*sattr
)
3867 struct nfs4_exception exception
= { };
3868 struct nfs4_label l
, *label
= NULL
;
3871 label
= nfs4_label_init_security(dir
, dentry
, sattr
, &l
);
3874 err
= _nfs4_proc_symlink(dir
, dentry
, page
, len
, sattr
, label
);
3875 trace_nfs4_symlink(dir
, &dentry
->d_name
, err
);
3876 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
3878 } while (exception
.retry
);
3880 nfs4_label_release_security(label
);
3884 static int _nfs4_proc_mkdir(struct inode
*dir
, struct dentry
*dentry
,
3885 struct iattr
*sattr
, struct nfs4_label
*label
)
3887 struct nfs4_createdata
*data
;
3888 int status
= -ENOMEM
;
3890 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4DIR
);
3894 data
->arg
.label
= label
;
3895 status
= nfs4_do_create(dir
, dentry
, data
);
3897 nfs4_free_createdata(data
);
3902 static int nfs4_proc_mkdir(struct inode
*dir
, struct dentry
*dentry
,
3903 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
);
3911 sattr
->ia_mode
&= ~current_umask();
3913 err
= _nfs4_proc_mkdir(dir
, dentry
, sattr
, label
);
3914 trace_nfs4_mkdir(dir
, &dentry
->d_name
, err
);
3915 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
3917 } while (exception
.retry
);
3918 nfs4_label_release_security(label
);
3923 static int _nfs4_proc_readdir(struct dentry
*dentry
, struct rpc_cred
*cred
,
3924 u64 cookie
, struct page
**pages
, unsigned int count
, int plus
)
3926 struct inode
*dir
= d_inode(dentry
);
3927 struct nfs4_readdir_arg args
= {
3932 .bitmask
= NFS_SERVER(d_inode(dentry
))->attr_bitmask
,
3935 struct nfs4_readdir_res res
;
3936 struct rpc_message msg
= {
3937 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READDIR
],
3944 dprintk("%s: dentry = %pd2, cookie = %Lu\n", __func__
,
3946 (unsigned long long)cookie
);
3947 nfs4_setup_readdir(cookie
, NFS_I(dir
)->cookieverf
, dentry
, &args
);
3948 res
.pgbase
= args
.pgbase
;
3949 status
= nfs4_call_sync(NFS_SERVER(dir
)->client
, NFS_SERVER(dir
), &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3951 memcpy(NFS_I(dir
)->cookieverf
, res
.verifier
.data
, NFS4_VERIFIER_SIZE
);
3952 status
+= args
.pgbase
;
3955 nfs_invalidate_atime(dir
);
3957 dprintk("%s: returns %d\n", __func__
, status
);
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 nfs4_exception exception
= { };
3967 err
= _nfs4_proc_readdir(dentry
, cred
, cookie
,
3968 pages
, count
, plus
);
3969 trace_nfs4_readdir(d_inode(dentry
), err
);
3970 err
= nfs4_handle_exception(NFS_SERVER(d_inode(dentry
)), err
,
3972 } while (exception
.retry
);
3976 static int _nfs4_proc_mknod(struct inode
*dir
, struct dentry
*dentry
,
3977 struct iattr
*sattr
, struct nfs4_label
*label
, dev_t rdev
)
3979 struct nfs4_createdata
*data
;
3980 int mode
= sattr
->ia_mode
;
3981 int status
= -ENOMEM
;
3983 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4SOCK
);
3988 data
->arg
.ftype
= NF4FIFO
;
3989 else if (S_ISBLK(mode
)) {
3990 data
->arg
.ftype
= NF4BLK
;
3991 data
->arg
.u
.device
.specdata1
= MAJOR(rdev
);
3992 data
->arg
.u
.device
.specdata2
= MINOR(rdev
);
3994 else if (S_ISCHR(mode
)) {
3995 data
->arg
.ftype
= NF4CHR
;
3996 data
->arg
.u
.device
.specdata1
= MAJOR(rdev
);
3997 data
->arg
.u
.device
.specdata2
= MINOR(rdev
);
3998 } else if (!S_ISSOCK(mode
)) {
4003 data
->arg
.label
= label
;
4004 status
= nfs4_do_create(dir
, dentry
, data
);
4006 nfs4_free_createdata(data
);
4011 static int nfs4_proc_mknod(struct inode
*dir
, struct dentry
*dentry
,
4012 struct iattr
*sattr
, dev_t rdev
)
4014 struct nfs4_exception exception
= { };
4015 struct nfs4_label l
, *label
= NULL
;
4018 label
= nfs4_label_init_security(dir
, dentry
, sattr
, &l
);
4020 sattr
->ia_mode
&= ~current_umask();
4022 err
= _nfs4_proc_mknod(dir
, dentry
, sattr
, label
, rdev
);
4023 trace_nfs4_mknod(dir
, &dentry
->d_name
, err
);
4024 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
4026 } while (exception
.retry
);
4028 nfs4_label_release_security(label
);
4033 static int _nfs4_proc_statfs(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
4034 struct nfs_fsstat
*fsstat
)
4036 struct nfs4_statfs_arg args
= {
4038 .bitmask
= server
->attr_bitmask
,
4040 struct nfs4_statfs_res res
= {
4043 struct rpc_message msg
= {
4044 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_STATFS
],
4049 nfs_fattr_init(fsstat
->fattr
);
4050 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
4053 static int nfs4_proc_statfs(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsstat
*fsstat
)
4055 struct nfs4_exception exception
= { };
4058 err
= nfs4_handle_exception(server
,
4059 _nfs4_proc_statfs(server
, fhandle
, fsstat
),
4061 } while (exception
.retry
);
4065 static int _nfs4_do_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
4066 struct nfs_fsinfo
*fsinfo
)
4068 struct nfs4_fsinfo_arg args
= {
4070 .bitmask
= server
->attr_bitmask
,
4072 struct nfs4_fsinfo_res res
= {
4075 struct rpc_message msg
= {
4076 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FSINFO
],
4081 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
4084 static int nfs4_do_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsinfo
*fsinfo
)
4086 struct nfs4_exception exception
= { };
4087 unsigned long now
= jiffies
;
4091 err
= _nfs4_do_fsinfo(server
, fhandle
, fsinfo
);
4092 trace_nfs4_fsinfo(server
, fhandle
, fsinfo
->fattr
, err
);
4094 struct nfs_client
*clp
= server
->nfs_client
;
4096 spin_lock(&clp
->cl_lock
);
4097 clp
->cl_lease_time
= fsinfo
->lease_time
* HZ
;
4098 clp
->cl_last_renewal
= now
;
4099 spin_unlock(&clp
->cl_lock
);
4102 err
= nfs4_handle_exception(server
, err
, &exception
);
4103 } while (exception
.retry
);
4107 static int nfs4_proc_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsinfo
*fsinfo
)
4111 nfs_fattr_init(fsinfo
->fattr
);
4112 error
= nfs4_do_fsinfo(server
, fhandle
, fsinfo
);
4114 /* block layout checks this! */
4115 server
->pnfs_blksize
= fsinfo
->blksize
;
4116 set_pnfs_layoutdriver(server
, fhandle
, fsinfo
->layouttype
);
4122 static int _nfs4_proc_pathconf(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
4123 struct nfs_pathconf
*pathconf
)
4125 struct nfs4_pathconf_arg args
= {
4127 .bitmask
= server
->attr_bitmask
,
4129 struct nfs4_pathconf_res res
= {
4130 .pathconf
= pathconf
,
4132 struct rpc_message msg
= {
4133 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_PATHCONF
],
4138 /* None of the pathconf attributes are mandatory to implement */
4139 if ((args
.bitmask
[0] & nfs4_pathconf_bitmap
[0]) == 0) {
4140 memset(pathconf
, 0, sizeof(*pathconf
));
4144 nfs_fattr_init(pathconf
->fattr
);
4145 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
4148 static int nfs4_proc_pathconf(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
4149 struct nfs_pathconf
*pathconf
)
4151 struct nfs4_exception exception
= { };
4155 err
= nfs4_handle_exception(server
,
4156 _nfs4_proc_pathconf(server
, fhandle
, pathconf
),
4158 } while (exception
.retry
);
4162 int nfs4_set_rw_stateid(nfs4_stateid
*stateid
,
4163 const struct nfs_open_context
*ctx
,
4164 const struct nfs_lock_context
*l_ctx
,
4167 const struct nfs_lockowner
*lockowner
= NULL
;
4170 lockowner
= &l_ctx
->lockowner
;
4171 return nfs4_select_rw_stateid(stateid
, ctx
->state
, fmode
, lockowner
);
4173 EXPORT_SYMBOL_GPL(nfs4_set_rw_stateid
);
4175 static bool nfs4_stateid_is_current(nfs4_stateid
*stateid
,
4176 const struct nfs_open_context
*ctx
,
4177 const struct nfs_lock_context
*l_ctx
,
4180 nfs4_stateid current_stateid
;
4182 /* If the current stateid represents a lost lock, then exit */
4183 if (nfs4_set_rw_stateid(¤t_stateid
, ctx
, l_ctx
, fmode
) == -EIO
)
4185 return nfs4_stateid_match(stateid
, ¤t_stateid
);
4188 static bool nfs4_error_stateid_expired(int err
)
4191 case -NFS4ERR_DELEG_REVOKED
:
4192 case -NFS4ERR_ADMIN_REVOKED
:
4193 case -NFS4ERR_BAD_STATEID
:
4194 case -NFS4ERR_STALE_STATEID
:
4195 case -NFS4ERR_OLD_STATEID
:
4196 case -NFS4ERR_OPENMODE
:
4197 case -NFS4ERR_EXPIRED
:
4203 void __nfs4_read_done_cb(struct nfs_pgio_header
*hdr
)
4205 nfs_invalidate_atime(hdr
->inode
);
4208 static int nfs4_read_done_cb(struct rpc_task
*task
, struct nfs_pgio_header
*hdr
)
4210 struct nfs_server
*server
= NFS_SERVER(hdr
->inode
);
4212 trace_nfs4_read(hdr
, task
->tk_status
);
4213 if (nfs4_async_handle_error(task
, server
,
4214 hdr
->args
.context
->state
,
4216 rpc_restart_call_prepare(task
);
4220 __nfs4_read_done_cb(hdr
);
4221 if (task
->tk_status
> 0)
4222 renew_lease(server
, hdr
->timestamp
);
4226 static bool nfs4_read_stateid_changed(struct rpc_task
*task
,
4227 struct nfs_pgio_args
*args
)
4230 if (!nfs4_error_stateid_expired(task
->tk_status
) ||
4231 nfs4_stateid_is_current(&args
->stateid
,
4236 rpc_restart_call_prepare(task
);
4240 static int nfs4_read_done(struct rpc_task
*task
, struct nfs_pgio_header
*hdr
)
4243 dprintk("--> %s\n", __func__
);
4245 if (!nfs4_sequence_done(task
, &hdr
->res
.seq_res
))
4247 if (nfs4_read_stateid_changed(task
, &hdr
->args
))
4249 return hdr
->pgio_done_cb
? hdr
->pgio_done_cb(task
, hdr
) :
4250 nfs4_read_done_cb(task
, hdr
);
4253 static void nfs4_proc_read_setup(struct nfs_pgio_header
*hdr
,
4254 struct rpc_message
*msg
)
4256 hdr
->timestamp
= jiffies
;
4257 hdr
->pgio_done_cb
= nfs4_read_done_cb
;
4258 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READ
];
4259 nfs4_init_sequence(&hdr
->args
.seq_args
, &hdr
->res
.seq_res
, 0);
4262 static int nfs4_proc_pgio_rpc_prepare(struct rpc_task
*task
,
4263 struct nfs_pgio_header
*hdr
)
4265 if (nfs4_setup_sequence(NFS_SERVER(hdr
->inode
),
4266 &hdr
->args
.seq_args
,
4270 if (nfs4_set_rw_stateid(&hdr
->args
.stateid
, hdr
->args
.context
,
4271 hdr
->args
.lock_context
,
4272 hdr
->rw_ops
->rw_mode
) == -EIO
)
4274 if (unlikely(test_bit(NFS_CONTEXT_BAD
, &hdr
->args
.context
->flags
)))
4279 static int nfs4_write_done_cb(struct rpc_task
*task
,
4280 struct nfs_pgio_header
*hdr
)
4282 struct inode
*inode
= hdr
->inode
;
4284 trace_nfs4_write(hdr
, task
->tk_status
);
4285 if (nfs4_async_handle_error(task
, NFS_SERVER(inode
),
4286 hdr
->args
.context
->state
,
4288 rpc_restart_call_prepare(task
);
4291 if (task
->tk_status
>= 0) {
4292 renew_lease(NFS_SERVER(inode
), hdr
->timestamp
);
4293 nfs_writeback_update_inode(hdr
);
4298 static bool nfs4_write_stateid_changed(struct rpc_task
*task
,
4299 struct nfs_pgio_args
*args
)
4302 if (!nfs4_error_stateid_expired(task
->tk_status
) ||
4303 nfs4_stateid_is_current(&args
->stateid
,
4308 rpc_restart_call_prepare(task
);
4312 static int nfs4_write_done(struct rpc_task
*task
, struct nfs_pgio_header
*hdr
)
4314 if (!nfs4_sequence_done(task
, &hdr
->res
.seq_res
))
4316 if (nfs4_write_stateid_changed(task
, &hdr
->args
))
4318 return hdr
->pgio_done_cb
? hdr
->pgio_done_cb(task
, hdr
) :
4319 nfs4_write_done_cb(task
, hdr
);
4323 bool nfs4_write_need_cache_consistency_data(struct nfs_pgio_header
*hdr
)
4325 /* Don't request attributes for pNFS or O_DIRECT writes */
4326 if (hdr
->ds_clp
!= NULL
|| hdr
->dreq
!= NULL
)
4328 /* Otherwise, request attributes if and only if we don't hold
4331 return nfs4_have_delegation(hdr
->inode
, FMODE_READ
) == 0;
4334 static void nfs4_proc_write_setup(struct nfs_pgio_header
*hdr
,
4335 struct rpc_message
*msg
)
4337 struct nfs_server
*server
= NFS_SERVER(hdr
->inode
);
4339 if (!nfs4_write_need_cache_consistency_data(hdr
)) {
4340 hdr
->args
.bitmask
= NULL
;
4341 hdr
->res
.fattr
= NULL
;
4343 hdr
->args
.bitmask
= server
->cache_consistency_bitmask
;
4345 if (!hdr
->pgio_done_cb
)
4346 hdr
->pgio_done_cb
= nfs4_write_done_cb
;
4347 hdr
->res
.server
= server
;
4348 hdr
->timestamp
= jiffies
;
4350 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_WRITE
];
4351 nfs4_init_sequence(&hdr
->args
.seq_args
, &hdr
->res
.seq_res
, 1);
4354 static void nfs4_proc_commit_rpc_prepare(struct rpc_task
*task
, struct nfs_commit_data
*data
)
4356 nfs4_setup_sequence(NFS_SERVER(data
->inode
),
4357 &data
->args
.seq_args
,
4362 static int nfs4_commit_done_cb(struct rpc_task
*task
, struct nfs_commit_data
*data
)
4364 struct inode
*inode
= data
->inode
;
4366 trace_nfs4_commit(data
, task
->tk_status
);
4367 if (nfs4_async_handle_error(task
, NFS_SERVER(inode
),
4368 NULL
, NULL
) == -EAGAIN
) {
4369 rpc_restart_call_prepare(task
);
4375 static int nfs4_commit_done(struct rpc_task
*task
, struct nfs_commit_data
*data
)
4377 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
4379 return data
->commit_done_cb(task
, data
);
4382 static void nfs4_proc_commit_setup(struct nfs_commit_data
*data
, struct rpc_message
*msg
)
4384 struct nfs_server
*server
= NFS_SERVER(data
->inode
);
4386 if (data
->commit_done_cb
== NULL
)
4387 data
->commit_done_cb
= nfs4_commit_done_cb
;
4388 data
->res
.server
= server
;
4389 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_COMMIT
];
4390 nfs4_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
4393 struct nfs4_renewdata
{
4394 struct nfs_client
*client
;
4395 unsigned long timestamp
;
4399 * nfs4_proc_async_renew(): This is not one of the nfs_rpc_ops; it is a special
4400 * standalone procedure for queueing an asynchronous RENEW.
4402 static void nfs4_renew_release(void *calldata
)
4404 struct nfs4_renewdata
*data
= calldata
;
4405 struct nfs_client
*clp
= data
->client
;
4407 if (atomic_read(&clp
->cl_count
) > 1)
4408 nfs4_schedule_state_renewal(clp
);
4409 nfs_put_client(clp
);
4413 static void nfs4_renew_done(struct rpc_task
*task
, void *calldata
)
4415 struct nfs4_renewdata
*data
= calldata
;
4416 struct nfs_client
*clp
= data
->client
;
4417 unsigned long timestamp
= data
->timestamp
;
4419 trace_nfs4_renew_async(clp
, task
->tk_status
);
4420 switch (task
->tk_status
) {
4423 case -NFS4ERR_LEASE_MOVED
:
4424 nfs4_schedule_lease_moved_recovery(clp
);
4427 /* Unless we're shutting down, schedule state recovery! */
4428 if (test_bit(NFS_CS_RENEWD
, &clp
->cl_res_state
) == 0)
4430 if (task
->tk_status
!= NFS4ERR_CB_PATH_DOWN
) {
4431 nfs4_schedule_lease_recovery(clp
);
4434 nfs4_schedule_path_down_recovery(clp
);
4436 do_renew_lease(clp
, timestamp
);
4439 static const struct rpc_call_ops nfs4_renew_ops
= {
4440 .rpc_call_done
= nfs4_renew_done
,
4441 .rpc_release
= nfs4_renew_release
,
4444 static int nfs4_proc_async_renew(struct nfs_client
*clp
, struct rpc_cred
*cred
, unsigned renew_flags
)
4446 struct rpc_message msg
= {
4447 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENEW
],
4451 struct nfs4_renewdata
*data
;
4453 if (renew_flags
== 0)
4455 if (!atomic_inc_not_zero(&clp
->cl_count
))
4457 data
= kmalloc(sizeof(*data
), GFP_NOFS
);
4461 data
->timestamp
= jiffies
;
4462 return rpc_call_async(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
,
4463 &nfs4_renew_ops
, data
);
4466 static int nfs4_proc_renew(struct nfs_client
*clp
, struct rpc_cred
*cred
)
4468 struct rpc_message msg
= {
4469 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENEW
],
4473 unsigned long now
= jiffies
;
4476 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
4479 do_renew_lease(clp
, now
);
4483 static inline int nfs4_server_supports_acls(struct nfs_server
*server
)
4485 return server
->caps
& NFS_CAP_ACLS
;
4488 /* Assuming that XATTR_SIZE_MAX is a multiple of PAGE_SIZE, and that
4489 * it's OK to put sizeof(void) * (XATTR_SIZE_MAX/PAGE_SIZE) bytes on
4492 #define NFS4ACL_MAXPAGES DIV_ROUND_UP(XATTR_SIZE_MAX, PAGE_SIZE)
4494 static int buf_to_pages_noslab(const void *buf
, size_t buflen
,
4495 struct page
**pages
, unsigned int *pgbase
)
4497 struct page
*newpage
, **spages
;
4503 len
= min_t(size_t, PAGE_SIZE
, buflen
);
4504 newpage
= alloc_page(GFP_KERNEL
);
4506 if (newpage
== NULL
)
4508 memcpy(page_address(newpage
), buf
, len
);
4513 } while (buflen
!= 0);
4519 __free_page(spages
[rc
-1]);
4523 struct nfs4_cached_acl
{
4529 static void nfs4_set_cached_acl(struct inode
*inode
, struct nfs4_cached_acl
*acl
)
4531 struct nfs_inode
*nfsi
= NFS_I(inode
);
4533 spin_lock(&inode
->i_lock
);
4534 kfree(nfsi
->nfs4_acl
);
4535 nfsi
->nfs4_acl
= acl
;
4536 spin_unlock(&inode
->i_lock
);
4539 static void nfs4_zap_acl_attr(struct inode
*inode
)
4541 nfs4_set_cached_acl(inode
, NULL
);
4544 static inline ssize_t
nfs4_read_cached_acl(struct inode
*inode
, char *buf
, size_t buflen
)
4546 struct nfs_inode
*nfsi
= NFS_I(inode
);
4547 struct nfs4_cached_acl
*acl
;
4550 spin_lock(&inode
->i_lock
);
4551 acl
= nfsi
->nfs4_acl
;
4554 if (buf
== NULL
) /* user is just asking for length */
4556 if (acl
->cached
== 0)
4558 ret
= -ERANGE
; /* see getxattr(2) man page */
4559 if (acl
->len
> buflen
)
4561 memcpy(buf
, acl
->data
, acl
->len
);
4565 spin_unlock(&inode
->i_lock
);
4569 static void nfs4_write_cached_acl(struct inode
*inode
, struct page
**pages
, size_t pgbase
, size_t acl_len
)
4571 struct nfs4_cached_acl
*acl
;
4572 size_t buflen
= sizeof(*acl
) + acl_len
;
4574 if (buflen
<= PAGE_SIZE
) {
4575 acl
= kmalloc(buflen
, GFP_KERNEL
);
4579 _copy_from_pages(acl
->data
, pages
, pgbase
, acl_len
);
4581 acl
= kmalloc(sizeof(*acl
), GFP_KERNEL
);
4588 nfs4_set_cached_acl(inode
, acl
);
4592 * The getxattr API returns the required buffer length when called with a
4593 * NULL buf. The NFSv4 acl tool then calls getxattr again after allocating
4594 * the required buf. On a NULL buf, we send a page of data to the server
4595 * guessing that the ACL request can be serviced by a page. If so, we cache
4596 * up to the page of ACL data, and the 2nd call to getxattr is serviced by
4597 * the cache. If not so, we throw away the page, and cache the required
4598 * length. The next getxattr call will then produce another round trip to
4599 * the server, this time with the input buf of the required size.
4601 static ssize_t
__nfs4_get_acl_uncached(struct inode
*inode
, void *buf
, size_t buflen
)
4603 struct page
*pages
[NFS4ACL_MAXPAGES
] = {NULL
, };
4604 struct nfs_getaclargs args
= {
4605 .fh
= NFS_FH(inode
),
4609 struct nfs_getaclres res
= {
4612 struct rpc_message msg
= {
4613 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETACL
],
4617 unsigned int npages
= DIV_ROUND_UP(buflen
, PAGE_SIZE
);
4618 int ret
= -ENOMEM
, i
;
4620 /* As long as we're doing a round trip to the server anyway,
4621 * let's be prepared for a page of acl data. */
4624 if (npages
> ARRAY_SIZE(pages
))
4627 for (i
= 0; i
< npages
; i
++) {
4628 pages
[i
] = alloc_page(GFP_KERNEL
);
4633 /* for decoding across pages */
4634 res
.acl_scratch
= alloc_page(GFP_KERNEL
);
4635 if (!res
.acl_scratch
)
4638 args
.acl_len
= npages
* PAGE_SIZE
;
4639 args
.acl_pgbase
= 0;
4641 dprintk("%s buf %p buflen %zu npages %d args.acl_len %zu\n",
4642 __func__
, buf
, buflen
, npages
, args
.acl_len
);
4643 ret
= nfs4_call_sync(NFS_SERVER(inode
)->client
, NFS_SERVER(inode
),
4644 &msg
, &args
.seq_args
, &res
.seq_res
, 0);
4648 /* Handle the case where the passed-in buffer is too short */
4649 if (res
.acl_flags
& NFS4_ACL_TRUNC
) {
4650 /* Did the user only issue a request for the acl length? */
4656 nfs4_write_cached_acl(inode
, pages
, res
.acl_data_offset
, res
.acl_len
);
4658 if (res
.acl_len
> buflen
) {
4662 _copy_from_pages(buf
, pages
, res
.acl_data_offset
, res
.acl_len
);
4667 for (i
= 0; i
< npages
; i
++)
4669 __free_page(pages
[i
]);
4670 if (res
.acl_scratch
)
4671 __free_page(res
.acl_scratch
);
4675 static ssize_t
nfs4_get_acl_uncached(struct inode
*inode
, void *buf
, size_t buflen
)
4677 struct nfs4_exception exception
= { };
4680 ret
= __nfs4_get_acl_uncached(inode
, buf
, buflen
);
4681 trace_nfs4_get_acl(inode
, ret
);
4684 ret
= nfs4_handle_exception(NFS_SERVER(inode
), ret
, &exception
);
4685 } while (exception
.retry
);
4689 static ssize_t
nfs4_proc_get_acl(struct inode
*inode
, void *buf
, size_t buflen
)
4691 struct nfs_server
*server
= NFS_SERVER(inode
);
4694 if (!nfs4_server_supports_acls(server
))
4696 ret
= nfs_revalidate_inode(server
, inode
);
4699 if (NFS_I(inode
)->cache_validity
& NFS_INO_INVALID_ACL
)
4700 nfs_zap_acl_cache(inode
);
4701 ret
= nfs4_read_cached_acl(inode
, buf
, buflen
);
4703 /* -ENOENT is returned if there is no ACL or if there is an ACL
4704 * but no cached acl data, just the acl length */
4706 return nfs4_get_acl_uncached(inode
, buf
, buflen
);
4709 static int __nfs4_proc_set_acl(struct inode
*inode
, const void *buf
, size_t buflen
)
4711 struct nfs_server
*server
= NFS_SERVER(inode
);
4712 struct page
*pages
[NFS4ACL_MAXPAGES
];
4713 struct nfs_setaclargs arg
= {
4714 .fh
= NFS_FH(inode
),
4718 struct nfs_setaclres res
;
4719 struct rpc_message msg
= {
4720 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETACL
],
4724 unsigned int npages
= DIV_ROUND_UP(buflen
, PAGE_SIZE
);
4727 if (!nfs4_server_supports_acls(server
))
4729 if (npages
> ARRAY_SIZE(pages
))
4731 i
= buf_to_pages_noslab(buf
, buflen
, arg
.acl_pages
, &arg
.acl_pgbase
);
4734 nfs4_inode_return_delegation(inode
);
4735 ret
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
4738 * Free each page after tx, so the only ref left is
4739 * held by the network stack
4742 put_page(pages
[i
-1]);
4745 * Acl update can result in inode attribute update.
4746 * so mark the attribute cache invalid.
4748 spin_lock(&inode
->i_lock
);
4749 NFS_I(inode
)->cache_validity
|= NFS_INO_INVALID_ATTR
;
4750 spin_unlock(&inode
->i_lock
);
4751 nfs_access_zap_cache(inode
);
4752 nfs_zap_acl_cache(inode
);
4756 static int nfs4_proc_set_acl(struct inode
*inode
, const void *buf
, size_t buflen
)
4758 struct nfs4_exception exception
= { };
4761 err
= __nfs4_proc_set_acl(inode
, buf
, buflen
);
4762 trace_nfs4_set_acl(inode
, err
);
4763 err
= nfs4_handle_exception(NFS_SERVER(inode
), err
,
4765 } while (exception
.retry
);
4769 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
4770 static int _nfs4_get_security_label(struct inode
*inode
, void *buf
,
4773 struct nfs_server
*server
= NFS_SERVER(inode
);
4774 struct nfs_fattr fattr
;
4775 struct nfs4_label label
= {0, 0, buflen
, buf
};
4777 u32 bitmask
[3] = { 0, 0, FATTR4_WORD2_SECURITY_LABEL
};
4778 struct nfs4_getattr_arg arg
= {
4779 .fh
= NFS_FH(inode
),
4782 struct nfs4_getattr_res res
= {
4787 struct rpc_message msg
= {
4788 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETATTR
],
4794 nfs_fattr_init(&fattr
);
4796 ret
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 0);
4799 if (!(fattr
.valid
& NFS_ATTR_FATTR_V4_SECURITY_LABEL
))
4801 if (buflen
< label
.len
)
4806 static int nfs4_get_security_label(struct inode
*inode
, void *buf
,
4809 struct nfs4_exception exception
= { };
4812 if (!nfs_server_capable(inode
, NFS_CAP_SECURITY_LABEL
))
4816 err
= _nfs4_get_security_label(inode
, buf
, buflen
);
4817 trace_nfs4_get_security_label(inode
, err
);
4818 err
= nfs4_handle_exception(NFS_SERVER(inode
), err
,
4820 } while (exception
.retry
);
4824 static int _nfs4_do_set_security_label(struct inode
*inode
,
4825 struct nfs4_label
*ilabel
,
4826 struct nfs_fattr
*fattr
,
4827 struct nfs4_label
*olabel
)
4830 struct iattr sattr
= {0};
4831 struct nfs_server
*server
= NFS_SERVER(inode
);
4832 const u32 bitmask
[3] = { 0, 0, FATTR4_WORD2_SECURITY_LABEL
};
4833 struct nfs_setattrargs arg
= {
4834 .fh
= NFS_FH(inode
),
4840 struct nfs_setattrres res
= {
4845 struct rpc_message msg
= {
4846 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETATTR
],
4852 nfs4_stateid_copy(&arg
.stateid
, &zero_stateid
);
4854 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
4856 dprintk("%s failed: %d\n", __func__
, status
);
4861 static int nfs4_do_set_security_label(struct inode
*inode
,
4862 struct nfs4_label
*ilabel
,
4863 struct nfs_fattr
*fattr
,
4864 struct nfs4_label
*olabel
)
4866 struct nfs4_exception exception
= { };
4870 err
= _nfs4_do_set_security_label(inode
, ilabel
,
4872 trace_nfs4_set_security_label(inode
, err
);
4873 err
= nfs4_handle_exception(NFS_SERVER(inode
), err
,
4875 } while (exception
.retry
);
4880 nfs4_set_security_label(struct dentry
*dentry
, const void *buf
, size_t buflen
)
4882 struct nfs4_label ilabel
, *olabel
= NULL
;
4883 struct nfs_fattr fattr
;
4884 struct rpc_cred
*cred
;
4885 struct inode
*inode
= d_inode(dentry
);
4888 if (!nfs_server_capable(inode
, NFS_CAP_SECURITY_LABEL
))
4891 nfs_fattr_init(&fattr
);
4895 ilabel
.label
= (char *)buf
;
4896 ilabel
.len
= buflen
;
4898 cred
= rpc_lookup_cred();
4900 return PTR_ERR(cred
);
4902 olabel
= nfs4_label_alloc(NFS_SERVER(inode
), GFP_KERNEL
);
4903 if (IS_ERR(olabel
)) {
4904 status
= -PTR_ERR(olabel
);
4908 status
= nfs4_do_set_security_label(inode
, &ilabel
, &fattr
, olabel
);
4910 nfs_setsecurity(inode
, &fattr
, olabel
);
4912 nfs4_label_free(olabel
);
4917 #endif /* CONFIG_NFS_V4_SECURITY_LABEL */
4921 nfs4_async_handle_error(struct rpc_task
*task
, const struct nfs_server
*server
,
4922 struct nfs4_state
*state
, long *timeout
)
4924 struct nfs_client
*clp
= server
->nfs_client
;
4926 if (task
->tk_status
>= 0)
4928 switch(task
->tk_status
) {
4929 case -NFS4ERR_DELEG_REVOKED
:
4930 case -NFS4ERR_ADMIN_REVOKED
:
4931 case -NFS4ERR_BAD_STATEID
:
4932 case -NFS4ERR_OPENMODE
:
4935 if (nfs4_schedule_stateid_recovery(server
, state
) < 0)
4936 goto recovery_failed
;
4937 goto wait_on_recovery
;
4938 case -NFS4ERR_EXPIRED
:
4939 if (state
!= NULL
) {
4940 if (nfs4_schedule_stateid_recovery(server
, state
) < 0)
4941 goto recovery_failed
;
4943 case -NFS4ERR_STALE_STATEID
:
4944 case -NFS4ERR_STALE_CLIENTID
:
4945 nfs4_schedule_lease_recovery(clp
);
4946 goto wait_on_recovery
;
4947 case -NFS4ERR_MOVED
:
4948 if (nfs4_schedule_migration_recovery(server
) < 0)
4949 goto recovery_failed
;
4950 goto wait_on_recovery
;
4951 case -NFS4ERR_LEASE_MOVED
:
4952 nfs4_schedule_lease_moved_recovery(clp
);
4953 goto wait_on_recovery
;
4954 #if defined(CONFIG_NFS_V4_1)
4955 case -NFS4ERR_BADSESSION
:
4956 case -NFS4ERR_BADSLOT
:
4957 case -NFS4ERR_BAD_HIGH_SLOT
:
4958 case -NFS4ERR_DEADSESSION
:
4959 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
4960 case -NFS4ERR_SEQ_FALSE_RETRY
:
4961 case -NFS4ERR_SEQ_MISORDERED
:
4962 dprintk("%s ERROR %d, Reset session\n", __func__
,
4964 nfs4_schedule_session_recovery(clp
->cl_session
, task
->tk_status
);
4965 goto wait_on_recovery
;
4966 #endif /* CONFIG_NFS_V4_1 */
4967 case -NFS4ERR_DELAY
:
4968 nfs_inc_server_stats(server
, NFSIOS_DELAY
);
4969 rpc_delay(task
, nfs4_update_delay(timeout
));
4971 case -NFS4ERR_GRACE
:
4972 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
4973 case -NFS4ERR_RETRY_UNCACHED_REP
:
4974 case -NFS4ERR_OLD_STATEID
:
4977 task
->tk_status
= nfs4_map_errors(task
->tk_status
);
4980 task
->tk_status
= -EIO
;
4983 rpc_sleep_on(&clp
->cl_rpcwaitq
, task
, NULL
);
4984 if (test_bit(NFS4CLNT_MANAGER_RUNNING
, &clp
->cl_state
) == 0)
4985 rpc_wake_up_queued_task(&clp
->cl_rpcwaitq
, task
);
4986 if (test_bit(NFS_MIG_FAILED
, &server
->mig_status
))
4987 goto recovery_failed
;
4989 task
->tk_status
= 0;
4993 static void nfs4_init_boot_verifier(const struct nfs_client
*clp
,
4994 nfs4_verifier
*bootverf
)
4998 if (test_bit(NFS4CLNT_PURGE_STATE
, &clp
->cl_state
)) {
4999 /* An impossible timestamp guarantees this value
5000 * will never match a generated boot time. */
5002 verf
[1] = cpu_to_be32(NSEC_PER_SEC
+ 1);
5004 struct nfs_net
*nn
= net_generic(clp
->cl_net
, nfs_net_id
);
5005 verf
[0] = cpu_to_be32(nn
->boot_time
.tv_sec
);
5006 verf
[1] = cpu_to_be32(nn
->boot_time
.tv_nsec
);
5008 memcpy(bootverf
->data
, verf
, sizeof(bootverf
->data
));
5012 nfs4_init_nonuniform_client_string(struct nfs_client
*clp
)
5018 if (clp
->cl_owner_id
!= NULL
)
5022 len
= 14 + strlen(clp
->cl_ipaddr
) + 1 +
5023 strlen(rpc_peeraddr2str(clp
->cl_rpcclient
, RPC_DISPLAY_ADDR
)) +
5025 strlen(rpc_peeraddr2str(clp
->cl_rpcclient
, RPC_DISPLAY_PROTO
)) +
5029 if (len
> NFS4_OPAQUE_LIMIT
+ 1)
5033 * Since this string is allocated at mount time, and held until the
5034 * nfs_client is destroyed, we can use GFP_KERNEL here w/o worrying
5035 * about a memory-reclaim deadlock.
5037 str
= kmalloc(len
, GFP_KERNEL
);
5042 result
= scnprintf(str
, len
, "Linux NFSv4.0 %s/%s %s",
5044 rpc_peeraddr2str(clp
->cl_rpcclient
, RPC_DISPLAY_ADDR
),
5045 rpc_peeraddr2str(clp
->cl_rpcclient
, RPC_DISPLAY_PROTO
));
5048 clp
->cl_owner_id
= str
;
5053 nfs4_init_uniquifier_client_string(struct nfs_client
*clp
)
5059 len
= 10 + 10 + 1 + 10 + 1 +
5060 strlen(nfs4_client_id_uniquifier
) + 1 +
5061 strlen(clp
->cl_rpcclient
->cl_nodename
) + 1;
5063 if (len
> NFS4_OPAQUE_LIMIT
+ 1)
5067 * Since this string is allocated at mount time, and held until the
5068 * nfs_client is destroyed, we can use GFP_KERNEL here w/o worrying
5069 * about a memory-reclaim deadlock.
5071 str
= kmalloc(len
, GFP_KERNEL
);
5075 result
= scnprintf(str
, len
, "Linux NFSv%u.%u %s/%s",
5076 clp
->rpc_ops
->version
, clp
->cl_minorversion
,
5077 nfs4_client_id_uniquifier
,
5078 clp
->cl_rpcclient
->cl_nodename
);
5079 clp
->cl_owner_id
= str
;
5084 nfs4_init_uniform_client_string(struct nfs_client
*clp
)
5090 if (clp
->cl_owner_id
!= NULL
)
5093 if (nfs4_client_id_uniquifier
[0] != '\0')
5094 return nfs4_init_uniquifier_client_string(clp
);
5096 len
= 10 + 10 + 1 + 10 + 1 +
5097 strlen(clp
->cl_rpcclient
->cl_nodename
) + 1;
5099 if (len
> NFS4_OPAQUE_LIMIT
+ 1)
5103 * Since this string is allocated at mount time, and held until the
5104 * nfs_client is destroyed, we can use GFP_KERNEL here w/o worrying
5105 * about a memory-reclaim deadlock.
5107 str
= kmalloc(len
, GFP_KERNEL
);
5111 result
= scnprintf(str
, len
, "Linux NFSv%u.%u %s",
5112 clp
->rpc_ops
->version
, clp
->cl_minorversion
,
5113 clp
->cl_rpcclient
->cl_nodename
);
5114 clp
->cl_owner_id
= str
;
5119 * nfs4_callback_up_net() starts only "tcp" and "tcp6" callback
5120 * services. Advertise one based on the address family of the
5124 nfs4_init_callback_netid(const struct nfs_client
*clp
, char *buf
, size_t len
)
5126 if (strchr(clp
->cl_ipaddr
, ':') != NULL
)
5127 return scnprintf(buf
, len
, "tcp6");
5129 return scnprintf(buf
, len
, "tcp");
5132 static void nfs4_setclientid_done(struct rpc_task
*task
, void *calldata
)
5134 struct nfs4_setclientid
*sc
= calldata
;
5136 if (task
->tk_status
== 0)
5137 sc
->sc_cred
= get_rpccred(task
->tk_rqstp
->rq_cred
);
5140 static const struct rpc_call_ops nfs4_setclientid_ops
= {
5141 .rpc_call_done
= nfs4_setclientid_done
,
5145 * nfs4_proc_setclientid - Negotiate client ID
5146 * @clp: state data structure
5147 * @program: RPC program for NFSv4 callback service
5148 * @port: IP port number for NFS4 callback service
5149 * @cred: RPC credential to use for this call
5150 * @res: where to place the result
5152 * Returns zero, a negative errno, or a negative NFS4ERR status code.
5154 int nfs4_proc_setclientid(struct nfs_client
*clp
, u32 program
,
5155 unsigned short port
, struct rpc_cred
*cred
,
5156 struct nfs4_setclientid_res
*res
)
5158 nfs4_verifier sc_verifier
;
5159 struct nfs4_setclientid setclientid
= {
5160 .sc_verifier
= &sc_verifier
,
5164 struct rpc_message msg
= {
5165 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETCLIENTID
],
5166 .rpc_argp
= &setclientid
,
5170 struct rpc_task
*task
;
5171 struct rpc_task_setup task_setup_data
= {
5172 .rpc_client
= clp
->cl_rpcclient
,
5173 .rpc_message
= &msg
,
5174 .callback_ops
= &nfs4_setclientid_ops
,
5175 .callback_data
= &setclientid
,
5176 .flags
= RPC_TASK_TIMEOUT
,
5180 /* nfs_client_id4 */
5181 nfs4_init_boot_verifier(clp
, &sc_verifier
);
5183 if (test_bit(NFS_CS_MIGRATION
, &clp
->cl_flags
))
5184 status
= nfs4_init_uniform_client_string(clp
);
5186 status
= nfs4_init_nonuniform_client_string(clp
);
5192 setclientid
.sc_netid_len
=
5193 nfs4_init_callback_netid(clp
,
5194 setclientid
.sc_netid
,
5195 sizeof(setclientid
.sc_netid
));
5196 setclientid
.sc_uaddr_len
= scnprintf(setclientid
.sc_uaddr
,
5197 sizeof(setclientid
.sc_uaddr
), "%s.%u.%u",
5198 clp
->cl_ipaddr
, port
>> 8, port
& 255);
5200 dprintk("NFS call setclientid auth=%s, '%s'\n",
5201 clp
->cl_rpcclient
->cl_auth
->au_ops
->au_name
,
5203 task
= rpc_run_task(&task_setup_data
);
5205 status
= PTR_ERR(task
);
5208 status
= task
->tk_status
;
5209 if (setclientid
.sc_cred
) {
5210 clp
->cl_acceptor
= rpcauth_stringify_acceptor(setclientid
.sc_cred
);
5211 put_rpccred(setclientid
.sc_cred
);
5215 trace_nfs4_setclientid(clp
, status
);
5216 dprintk("NFS reply setclientid: %d\n", status
);
5221 * nfs4_proc_setclientid_confirm - Confirm client ID
5222 * @clp: state data structure
5223 * @res: result of a previous SETCLIENTID
5224 * @cred: RPC credential to use for this call
5226 * Returns zero, a negative errno, or a negative NFS4ERR status code.
5228 int nfs4_proc_setclientid_confirm(struct nfs_client
*clp
,
5229 struct nfs4_setclientid_res
*arg
,
5230 struct rpc_cred
*cred
)
5232 struct rpc_message msg
= {
5233 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETCLIENTID_CONFIRM
],
5239 dprintk("NFS call setclientid_confirm auth=%s, (client ID %llx)\n",
5240 clp
->cl_rpcclient
->cl_auth
->au_ops
->au_name
,
5242 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
5243 trace_nfs4_setclientid_confirm(clp
, status
);
5244 dprintk("NFS reply setclientid_confirm: %d\n", status
);
5248 struct nfs4_delegreturndata
{
5249 struct nfs4_delegreturnargs args
;
5250 struct nfs4_delegreturnres res
;
5252 nfs4_stateid stateid
;
5253 unsigned long timestamp
;
5254 struct nfs_fattr fattr
;
5256 struct inode
*inode
;
5261 static void nfs4_delegreturn_done(struct rpc_task
*task
, void *calldata
)
5263 struct nfs4_delegreturndata
*data
= calldata
;
5265 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
5268 trace_nfs4_delegreturn_exit(&data
->args
, &data
->res
, task
->tk_status
);
5269 switch (task
->tk_status
) {
5271 renew_lease(data
->res
.server
, data
->timestamp
);
5272 case -NFS4ERR_ADMIN_REVOKED
:
5273 case -NFS4ERR_DELEG_REVOKED
:
5274 case -NFS4ERR_BAD_STATEID
:
5275 case -NFS4ERR_OLD_STATEID
:
5276 case -NFS4ERR_STALE_STATEID
:
5277 case -NFS4ERR_EXPIRED
:
5278 task
->tk_status
= 0;
5280 pnfs_roc_set_barrier(data
->inode
, data
->roc_barrier
);
5283 if (nfs4_async_handle_error(task
, data
->res
.server
,
5284 NULL
, NULL
) == -EAGAIN
) {
5285 rpc_restart_call_prepare(task
);
5289 data
->rpc_status
= task
->tk_status
;
5292 static void nfs4_delegreturn_release(void *calldata
)
5294 struct nfs4_delegreturndata
*data
= calldata
;
5295 struct inode
*inode
= data
->inode
;
5299 pnfs_roc_release(inode
);
5300 nfs_iput_and_deactive(inode
);
5305 static void nfs4_delegreturn_prepare(struct rpc_task
*task
, void *data
)
5307 struct nfs4_delegreturndata
*d_data
;
5309 d_data
= (struct nfs4_delegreturndata
*)data
;
5312 pnfs_roc_get_barrier(d_data
->inode
, &d_data
->roc_barrier
);
5314 nfs4_setup_sequence(d_data
->res
.server
,
5315 &d_data
->args
.seq_args
,
5316 &d_data
->res
.seq_res
,
5320 static const struct rpc_call_ops nfs4_delegreturn_ops
= {
5321 .rpc_call_prepare
= nfs4_delegreturn_prepare
,
5322 .rpc_call_done
= nfs4_delegreturn_done
,
5323 .rpc_release
= nfs4_delegreturn_release
,
5326 static int _nfs4_proc_delegreturn(struct inode
*inode
, struct rpc_cred
*cred
, const nfs4_stateid
*stateid
, int issync
)
5328 struct nfs4_delegreturndata
*data
;
5329 struct nfs_server
*server
= NFS_SERVER(inode
);
5330 struct rpc_task
*task
;
5331 struct rpc_message msg
= {
5332 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DELEGRETURN
],
5335 struct rpc_task_setup task_setup_data
= {
5336 .rpc_client
= server
->client
,
5337 .rpc_message
= &msg
,
5338 .callback_ops
= &nfs4_delegreturn_ops
,
5339 .flags
= RPC_TASK_ASYNC
,
5343 data
= kzalloc(sizeof(*data
), GFP_NOFS
);
5346 nfs4_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
5347 data
->args
.fhandle
= &data
->fh
;
5348 data
->args
.stateid
= &data
->stateid
;
5349 data
->args
.bitmask
= server
->cache_consistency_bitmask
;
5350 nfs_copy_fh(&data
->fh
, NFS_FH(inode
));
5351 nfs4_stateid_copy(&data
->stateid
, stateid
);
5352 data
->res
.fattr
= &data
->fattr
;
5353 data
->res
.server
= server
;
5354 nfs_fattr_init(data
->res
.fattr
);
5355 data
->timestamp
= jiffies
;
5356 data
->rpc_status
= 0;
5357 data
->inode
= nfs_igrab_and_active(inode
);
5359 data
->roc
= nfs4_roc(inode
);
5361 task_setup_data
.callback_data
= data
;
5362 msg
.rpc_argp
= &data
->args
;
5363 msg
.rpc_resp
= &data
->res
;
5364 task
= rpc_run_task(&task_setup_data
);
5366 return PTR_ERR(task
);
5369 status
= nfs4_wait_for_completion_rpc_task(task
);
5372 status
= data
->rpc_status
;
5374 nfs_post_op_update_inode_force_wcc(inode
, &data
->fattr
);
5376 nfs_refresh_inode(inode
, &data
->fattr
);
5382 int nfs4_proc_delegreturn(struct inode
*inode
, struct rpc_cred
*cred
, const nfs4_stateid
*stateid
, int issync
)
5384 struct nfs_server
*server
= NFS_SERVER(inode
);
5385 struct nfs4_exception exception
= { };
5388 err
= _nfs4_proc_delegreturn(inode
, cred
, stateid
, issync
);
5389 trace_nfs4_delegreturn(inode
, err
);
5391 case -NFS4ERR_STALE_STATEID
:
5392 case -NFS4ERR_EXPIRED
:
5396 err
= nfs4_handle_exception(server
, err
, &exception
);
5397 } while (exception
.retry
);
5401 #define NFS4_LOCK_MINTIMEOUT (1 * HZ)
5402 #define NFS4_LOCK_MAXTIMEOUT (30 * HZ)
5405 * sleep, with exponential backoff, and retry the LOCK operation.
5407 static unsigned long
5408 nfs4_set_lock_task_retry(unsigned long timeout
)
5410 freezable_schedule_timeout_killable_unsafe(timeout
);
5412 if (timeout
> NFS4_LOCK_MAXTIMEOUT
)
5413 return NFS4_LOCK_MAXTIMEOUT
;
5417 static int _nfs4_proc_getlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
5419 struct inode
*inode
= state
->inode
;
5420 struct nfs_server
*server
= NFS_SERVER(inode
);
5421 struct nfs_client
*clp
= server
->nfs_client
;
5422 struct nfs_lockt_args arg
= {
5423 .fh
= NFS_FH(inode
),
5426 struct nfs_lockt_res res
= {
5429 struct rpc_message msg
= {
5430 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCKT
],
5433 .rpc_cred
= state
->owner
->so_cred
,
5435 struct nfs4_lock_state
*lsp
;
5438 arg
.lock_owner
.clientid
= clp
->cl_clientid
;
5439 status
= nfs4_set_lock_state(state
, request
);
5442 lsp
= request
->fl_u
.nfs4_fl
.owner
;
5443 arg
.lock_owner
.id
= lsp
->ls_seqid
.owner_id
;
5444 arg
.lock_owner
.s_dev
= server
->s_dev
;
5445 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
5448 request
->fl_type
= F_UNLCK
;
5450 case -NFS4ERR_DENIED
:
5453 request
->fl_ops
->fl_release_private(request
);
5454 request
->fl_ops
= NULL
;
5459 static int nfs4_proc_getlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
5461 struct nfs4_exception exception
= { };
5465 err
= _nfs4_proc_getlk(state
, cmd
, request
);
5466 trace_nfs4_get_lock(request
, state
, cmd
, err
);
5467 err
= nfs4_handle_exception(NFS_SERVER(state
->inode
), err
,
5469 } while (exception
.retry
);
5473 static int do_vfs_lock(struct inode
*inode
, struct file_lock
*fl
)
5476 switch (fl
->fl_flags
& (FL_POSIX
|FL_FLOCK
)) {
5478 res
= posix_lock_inode_wait(inode
, fl
);
5481 res
= flock_lock_inode_wait(inode
, fl
);
5489 struct nfs4_unlockdata
{
5490 struct nfs_locku_args arg
;
5491 struct nfs_locku_res res
;
5492 struct nfs4_lock_state
*lsp
;
5493 struct nfs_open_context
*ctx
;
5494 struct file_lock fl
;
5495 const struct nfs_server
*server
;
5496 unsigned long timestamp
;
5499 static struct nfs4_unlockdata
*nfs4_alloc_unlockdata(struct file_lock
*fl
,
5500 struct nfs_open_context
*ctx
,
5501 struct nfs4_lock_state
*lsp
,
5502 struct nfs_seqid
*seqid
)
5504 struct nfs4_unlockdata
*p
;
5505 struct inode
*inode
= lsp
->ls_state
->inode
;
5507 p
= kzalloc(sizeof(*p
), GFP_NOFS
);
5510 p
->arg
.fh
= NFS_FH(inode
);
5512 p
->arg
.seqid
= seqid
;
5513 p
->res
.seqid
= seqid
;
5515 atomic_inc(&lsp
->ls_count
);
5516 /* Ensure we don't close file until we're done freeing locks! */
5517 p
->ctx
= get_nfs_open_context(ctx
);
5518 memcpy(&p
->fl
, fl
, sizeof(p
->fl
));
5519 p
->server
= NFS_SERVER(inode
);
5523 static void nfs4_locku_release_calldata(void *data
)
5525 struct nfs4_unlockdata
*calldata
= data
;
5526 nfs_free_seqid(calldata
->arg
.seqid
);
5527 nfs4_put_lock_state(calldata
->lsp
);
5528 put_nfs_open_context(calldata
->ctx
);
5532 static void nfs4_locku_done(struct rpc_task
*task
, void *data
)
5534 struct nfs4_unlockdata
*calldata
= data
;
5536 if (!nfs4_sequence_done(task
, &calldata
->res
.seq_res
))
5538 switch (task
->tk_status
) {
5540 renew_lease(calldata
->server
, calldata
->timestamp
);
5541 do_vfs_lock(calldata
->lsp
->ls_state
->inode
, &calldata
->fl
);
5542 if (nfs4_update_lock_stateid(calldata
->lsp
,
5543 &calldata
->res
.stateid
))
5545 case -NFS4ERR_BAD_STATEID
:
5546 case -NFS4ERR_OLD_STATEID
:
5547 case -NFS4ERR_STALE_STATEID
:
5548 case -NFS4ERR_EXPIRED
:
5549 if (!nfs4_stateid_match(&calldata
->arg
.stateid
,
5550 &calldata
->lsp
->ls_stateid
))
5551 rpc_restart_call_prepare(task
);
5554 if (nfs4_async_handle_error(task
, calldata
->server
,
5555 NULL
, NULL
) == -EAGAIN
)
5556 rpc_restart_call_prepare(task
);
5558 nfs_release_seqid(calldata
->arg
.seqid
);
5561 static void nfs4_locku_prepare(struct rpc_task
*task
, void *data
)
5563 struct nfs4_unlockdata
*calldata
= data
;
5565 if (nfs_wait_on_sequence(calldata
->arg
.seqid
, task
) != 0)
5567 nfs4_stateid_copy(&calldata
->arg
.stateid
, &calldata
->lsp
->ls_stateid
);
5568 if (test_bit(NFS_LOCK_INITIALIZED
, &calldata
->lsp
->ls_flags
) == 0) {
5569 /* Note: exit _without_ running nfs4_locku_done */
5572 calldata
->timestamp
= jiffies
;
5573 if (nfs4_setup_sequence(calldata
->server
,
5574 &calldata
->arg
.seq_args
,
5575 &calldata
->res
.seq_res
,
5577 nfs_release_seqid(calldata
->arg
.seqid
);
5580 task
->tk_action
= NULL
;
5582 nfs4_sequence_done(task
, &calldata
->res
.seq_res
);
5585 static const struct rpc_call_ops nfs4_locku_ops
= {
5586 .rpc_call_prepare
= nfs4_locku_prepare
,
5587 .rpc_call_done
= nfs4_locku_done
,
5588 .rpc_release
= nfs4_locku_release_calldata
,
5591 static struct rpc_task
*nfs4_do_unlck(struct file_lock
*fl
,
5592 struct nfs_open_context
*ctx
,
5593 struct nfs4_lock_state
*lsp
,
5594 struct nfs_seqid
*seqid
)
5596 struct nfs4_unlockdata
*data
;
5597 struct rpc_message msg
= {
5598 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCKU
],
5599 .rpc_cred
= ctx
->cred
,
5601 struct rpc_task_setup task_setup_data
= {
5602 .rpc_client
= NFS_CLIENT(lsp
->ls_state
->inode
),
5603 .rpc_message
= &msg
,
5604 .callback_ops
= &nfs4_locku_ops
,
5605 .workqueue
= nfsiod_workqueue
,
5606 .flags
= RPC_TASK_ASYNC
,
5609 nfs4_state_protect(NFS_SERVER(lsp
->ls_state
->inode
)->nfs_client
,
5610 NFS_SP4_MACH_CRED_CLEANUP
, &task_setup_data
.rpc_client
, &msg
);
5612 /* Ensure this is an unlock - when canceling a lock, the
5613 * canceled lock is passed in, and it won't be an unlock.
5615 fl
->fl_type
= F_UNLCK
;
5617 data
= nfs4_alloc_unlockdata(fl
, ctx
, lsp
, seqid
);
5619 nfs_free_seqid(seqid
);
5620 return ERR_PTR(-ENOMEM
);
5623 nfs4_init_sequence(&data
->arg
.seq_args
, &data
->res
.seq_res
, 1);
5624 msg
.rpc_argp
= &data
->arg
;
5625 msg
.rpc_resp
= &data
->res
;
5626 task_setup_data
.callback_data
= data
;
5627 return rpc_run_task(&task_setup_data
);
5630 static int nfs4_proc_unlck(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
5632 struct inode
*inode
= state
->inode
;
5633 struct nfs4_state_owner
*sp
= state
->owner
;
5634 struct nfs_inode
*nfsi
= NFS_I(inode
);
5635 struct nfs_seqid
*seqid
;
5636 struct nfs4_lock_state
*lsp
;
5637 struct rpc_task
*task
;
5638 struct nfs_seqid
*(*alloc_seqid
)(struct nfs_seqid_counter
*, gfp_t
);
5640 unsigned char fl_flags
= request
->fl_flags
;
5642 status
= nfs4_set_lock_state(state
, request
);
5643 /* Unlock _before_ we do the RPC call */
5644 request
->fl_flags
|= FL_EXISTS
;
5645 /* Exclude nfs_delegation_claim_locks() */
5646 mutex_lock(&sp
->so_delegreturn_mutex
);
5647 /* Exclude nfs4_reclaim_open_stateid() - note nesting! */
5648 down_read(&nfsi
->rwsem
);
5649 if (do_vfs_lock(inode
, request
) == -ENOENT
) {
5650 up_read(&nfsi
->rwsem
);
5651 mutex_unlock(&sp
->so_delegreturn_mutex
);
5654 up_read(&nfsi
->rwsem
);
5655 mutex_unlock(&sp
->so_delegreturn_mutex
);
5658 /* Is this a delegated lock? */
5659 lsp
= request
->fl_u
.nfs4_fl
.owner
;
5660 if (test_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
) == 0)
5662 alloc_seqid
= NFS_SERVER(inode
)->nfs_client
->cl_mvops
->alloc_seqid
;
5663 seqid
= alloc_seqid(&lsp
->ls_seqid
, GFP_KERNEL
);
5667 task
= nfs4_do_unlck(request
, nfs_file_open_context(request
->fl_file
), lsp
, seqid
);
5668 status
= PTR_ERR(task
);
5671 status
= nfs4_wait_for_completion_rpc_task(task
);
5674 request
->fl_flags
= fl_flags
;
5675 trace_nfs4_unlock(request
, state
, F_SETLK
, status
);
5679 struct nfs4_lockdata
{
5680 struct nfs_lock_args arg
;
5681 struct nfs_lock_res res
;
5682 struct nfs4_lock_state
*lsp
;
5683 struct nfs_open_context
*ctx
;
5684 struct file_lock fl
;
5685 unsigned long timestamp
;
5688 struct nfs_server
*server
;
5691 static struct nfs4_lockdata
*nfs4_alloc_lockdata(struct file_lock
*fl
,
5692 struct nfs_open_context
*ctx
, struct nfs4_lock_state
*lsp
,
5695 struct nfs4_lockdata
*p
;
5696 struct inode
*inode
= lsp
->ls_state
->inode
;
5697 struct nfs_server
*server
= NFS_SERVER(inode
);
5698 struct nfs_seqid
*(*alloc_seqid
)(struct nfs_seqid_counter
*, gfp_t
);
5700 p
= kzalloc(sizeof(*p
), gfp_mask
);
5704 p
->arg
.fh
= NFS_FH(inode
);
5706 p
->arg
.open_seqid
= nfs_alloc_seqid(&lsp
->ls_state
->owner
->so_seqid
, gfp_mask
);
5707 if (IS_ERR(p
->arg
.open_seqid
))
5709 alloc_seqid
= server
->nfs_client
->cl_mvops
->alloc_seqid
;
5710 p
->arg
.lock_seqid
= alloc_seqid(&lsp
->ls_seqid
, gfp_mask
);
5711 if (IS_ERR(p
->arg
.lock_seqid
))
5712 goto out_free_seqid
;
5713 p
->arg
.lock_owner
.clientid
= server
->nfs_client
->cl_clientid
;
5714 p
->arg
.lock_owner
.id
= lsp
->ls_seqid
.owner_id
;
5715 p
->arg
.lock_owner
.s_dev
= server
->s_dev
;
5716 p
->res
.lock_seqid
= p
->arg
.lock_seqid
;
5719 atomic_inc(&lsp
->ls_count
);
5720 p
->ctx
= get_nfs_open_context(ctx
);
5721 get_file(fl
->fl_file
);
5722 memcpy(&p
->fl
, fl
, sizeof(p
->fl
));
5725 nfs_free_seqid(p
->arg
.open_seqid
);
5731 static void nfs4_lock_prepare(struct rpc_task
*task
, void *calldata
)
5733 struct nfs4_lockdata
*data
= calldata
;
5734 struct nfs4_state
*state
= data
->lsp
->ls_state
;
5736 dprintk("%s: begin!\n", __func__
);
5737 if (nfs_wait_on_sequence(data
->arg
.lock_seqid
, task
) != 0)
5739 /* Do we need to do an open_to_lock_owner? */
5740 if (!test_bit(NFS_LOCK_INITIALIZED
, &data
->lsp
->ls_flags
)) {
5741 if (nfs_wait_on_sequence(data
->arg
.open_seqid
, task
) != 0) {
5742 goto out_release_lock_seqid
;
5744 nfs4_stateid_copy(&data
->arg
.open_stateid
,
5745 &state
->open_stateid
);
5746 data
->arg
.new_lock_owner
= 1;
5747 data
->res
.open_seqid
= data
->arg
.open_seqid
;
5749 data
->arg
.new_lock_owner
= 0;
5750 nfs4_stateid_copy(&data
->arg
.lock_stateid
,
5751 &data
->lsp
->ls_stateid
);
5753 if (!nfs4_valid_open_stateid(state
)) {
5754 data
->rpc_status
= -EBADF
;
5755 task
->tk_action
= NULL
;
5756 goto out_release_open_seqid
;
5758 data
->timestamp
= jiffies
;
5759 if (nfs4_setup_sequence(data
->server
,
5760 &data
->arg
.seq_args
,
5764 out_release_open_seqid
:
5765 nfs_release_seqid(data
->arg
.open_seqid
);
5766 out_release_lock_seqid
:
5767 nfs_release_seqid(data
->arg
.lock_seqid
);
5769 nfs4_sequence_done(task
, &data
->res
.seq_res
);
5770 dprintk("%s: done!, ret = %d\n", __func__
, data
->rpc_status
);
5773 static void nfs4_lock_done(struct rpc_task
*task
, void *calldata
)
5775 struct nfs4_lockdata
*data
= calldata
;
5776 struct nfs4_lock_state
*lsp
= data
->lsp
;
5778 dprintk("%s: begin!\n", __func__
);
5780 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
5783 data
->rpc_status
= task
->tk_status
;
5784 switch (task
->tk_status
) {
5786 renew_lease(NFS_SERVER(d_inode(data
->ctx
->dentry
)),
5788 if (data
->arg
.new_lock
) {
5789 data
->fl
.fl_flags
&= ~(FL_SLEEP
| FL_ACCESS
);
5790 if (do_vfs_lock(lsp
->ls_state
->inode
, &data
->fl
) < 0) {
5791 rpc_restart_call_prepare(task
);
5795 if (data
->arg
.new_lock_owner
!= 0) {
5796 nfs_confirm_seqid(&lsp
->ls_seqid
, 0);
5797 nfs4_stateid_copy(&lsp
->ls_stateid
, &data
->res
.stateid
);
5798 set_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
);
5799 } else if (!nfs4_update_lock_stateid(lsp
, &data
->res
.stateid
))
5800 rpc_restart_call_prepare(task
);
5802 case -NFS4ERR_BAD_STATEID
:
5803 case -NFS4ERR_OLD_STATEID
:
5804 case -NFS4ERR_STALE_STATEID
:
5805 case -NFS4ERR_EXPIRED
:
5806 if (data
->arg
.new_lock_owner
!= 0) {
5807 if (!nfs4_stateid_match(&data
->arg
.open_stateid
,
5808 &lsp
->ls_state
->open_stateid
))
5809 rpc_restart_call_prepare(task
);
5810 } else if (!nfs4_stateid_match(&data
->arg
.lock_stateid
,
5812 rpc_restart_call_prepare(task
);
5814 dprintk("%s: done, ret = %d!\n", __func__
, data
->rpc_status
);
5817 static void nfs4_lock_release(void *calldata
)
5819 struct nfs4_lockdata
*data
= calldata
;
5821 dprintk("%s: begin!\n", __func__
);
5822 nfs_free_seqid(data
->arg
.open_seqid
);
5823 if (data
->cancelled
!= 0) {
5824 struct rpc_task
*task
;
5825 task
= nfs4_do_unlck(&data
->fl
, data
->ctx
, data
->lsp
,
5826 data
->arg
.lock_seqid
);
5828 rpc_put_task_async(task
);
5829 dprintk("%s: cancelling lock!\n", __func__
);
5831 nfs_free_seqid(data
->arg
.lock_seqid
);
5832 nfs4_put_lock_state(data
->lsp
);
5833 put_nfs_open_context(data
->ctx
);
5834 fput(data
->fl
.fl_file
);
5836 dprintk("%s: done!\n", __func__
);
5839 static const struct rpc_call_ops nfs4_lock_ops
= {
5840 .rpc_call_prepare
= nfs4_lock_prepare
,
5841 .rpc_call_done
= nfs4_lock_done
,
5842 .rpc_release
= nfs4_lock_release
,
5845 static void nfs4_handle_setlk_error(struct nfs_server
*server
, struct nfs4_lock_state
*lsp
, int new_lock_owner
, int error
)
5848 case -NFS4ERR_ADMIN_REVOKED
:
5849 case -NFS4ERR_BAD_STATEID
:
5850 lsp
->ls_seqid
.flags
&= ~NFS_SEQID_CONFIRMED
;
5851 if (new_lock_owner
!= 0 ||
5852 test_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
) != 0)
5853 nfs4_schedule_stateid_recovery(server
, lsp
->ls_state
);
5855 case -NFS4ERR_STALE_STATEID
:
5856 lsp
->ls_seqid
.flags
&= ~NFS_SEQID_CONFIRMED
;
5857 case -NFS4ERR_EXPIRED
:
5858 nfs4_schedule_lease_recovery(server
->nfs_client
);
5862 static int _nfs4_do_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*fl
, int recovery_type
)
5864 struct nfs4_lockdata
*data
;
5865 struct rpc_task
*task
;
5866 struct rpc_message msg
= {
5867 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCK
],
5868 .rpc_cred
= state
->owner
->so_cred
,
5870 struct rpc_task_setup task_setup_data
= {
5871 .rpc_client
= NFS_CLIENT(state
->inode
),
5872 .rpc_message
= &msg
,
5873 .callback_ops
= &nfs4_lock_ops
,
5874 .workqueue
= nfsiod_workqueue
,
5875 .flags
= RPC_TASK_ASYNC
,
5879 dprintk("%s: begin!\n", __func__
);
5880 data
= nfs4_alloc_lockdata(fl
, nfs_file_open_context(fl
->fl_file
),
5881 fl
->fl_u
.nfs4_fl
.owner
,
5882 recovery_type
== NFS_LOCK_NEW
? GFP_KERNEL
: GFP_NOFS
);
5886 data
->arg
.block
= 1;
5887 nfs4_init_sequence(&data
->arg
.seq_args
, &data
->res
.seq_res
, 1);
5888 msg
.rpc_argp
= &data
->arg
;
5889 msg
.rpc_resp
= &data
->res
;
5890 task_setup_data
.callback_data
= data
;
5891 if (recovery_type
> NFS_LOCK_NEW
) {
5892 if (recovery_type
== NFS_LOCK_RECLAIM
)
5893 data
->arg
.reclaim
= NFS_LOCK_RECLAIM
;
5894 nfs4_set_sequence_privileged(&data
->arg
.seq_args
);
5896 data
->arg
.new_lock
= 1;
5897 task
= rpc_run_task(&task_setup_data
);
5899 return PTR_ERR(task
);
5900 ret
= nfs4_wait_for_completion_rpc_task(task
);
5902 ret
= data
->rpc_status
;
5904 nfs4_handle_setlk_error(data
->server
, data
->lsp
,
5905 data
->arg
.new_lock_owner
, ret
);
5907 data
->cancelled
= 1;
5909 dprintk("%s: done, ret = %d!\n", __func__
, ret
);
5913 static int nfs4_lock_reclaim(struct nfs4_state
*state
, struct file_lock
*request
)
5915 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
5916 struct nfs4_exception exception
= {
5917 .inode
= state
->inode
,
5922 /* Cache the lock if possible... */
5923 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) != 0)
5925 err
= _nfs4_do_setlk(state
, F_SETLK
, request
, NFS_LOCK_RECLAIM
);
5926 trace_nfs4_lock_reclaim(request
, state
, F_SETLK
, err
);
5927 if (err
!= -NFS4ERR_DELAY
)
5929 nfs4_handle_exception(server
, err
, &exception
);
5930 } while (exception
.retry
);
5934 static int nfs4_lock_expired(struct nfs4_state
*state
, struct file_lock
*request
)
5936 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
5937 struct nfs4_exception exception
= {
5938 .inode
= state
->inode
,
5942 err
= nfs4_set_lock_state(state
, request
);
5945 if (!recover_lost_locks
) {
5946 set_bit(NFS_LOCK_LOST
, &request
->fl_u
.nfs4_fl
.owner
->ls_flags
);
5950 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) != 0)
5952 err
= _nfs4_do_setlk(state
, F_SETLK
, request
, NFS_LOCK_EXPIRED
);
5953 trace_nfs4_lock_expired(request
, state
, F_SETLK
, err
);
5957 case -NFS4ERR_GRACE
:
5958 case -NFS4ERR_DELAY
:
5959 nfs4_handle_exception(server
, err
, &exception
);
5962 } while (exception
.retry
);
5967 #if defined(CONFIG_NFS_V4_1)
5969 * nfs41_check_expired_locks - possibly free a lock stateid
5971 * @state: NFSv4 state for an inode
5973 * Returns NFS_OK if recovery for this stateid is now finished.
5974 * Otherwise a negative NFS4ERR value is returned.
5976 static int nfs41_check_expired_locks(struct nfs4_state
*state
)
5978 int status
, ret
= -NFS4ERR_BAD_STATEID
;
5979 struct nfs4_lock_state
*lsp
;
5980 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
5982 list_for_each_entry(lsp
, &state
->lock_states
, ls_locks
) {
5983 if (test_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
)) {
5984 struct rpc_cred
*cred
= lsp
->ls_state
->owner
->so_cred
;
5986 status
= nfs41_test_stateid(server
,
5989 trace_nfs4_test_lock_stateid(state
, lsp
, status
);
5990 if (status
!= NFS_OK
) {
5991 /* Free the stateid unless the server
5992 * informs us the stateid is unrecognized. */
5993 if (status
!= -NFS4ERR_BAD_STATEID
)
5994 nfs41_free_stateid(server
,
5997 clear_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
);
6006 static int nfs41_lock_expired(struct nfs4_state
*state
, struct file_lock
*request
)
6008 int status
= NFS_OK
;
6010 if (test_bit(LK_STATE_IN_USE
, &state
->flags
))
6011 status
= nfs41_check_expired_locks(state
);
6012 if (status
!= NFS_OK
)
6013 status
= nfs4_lock_expired(state
, request
);
6018 static int _nfs4_proc_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
6020 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
6021 unsigned char fl_flags
= request
->fl_flags
;
6022 int status
= -ENOLCK
;
6024 if ((fl_flags
& FL_POSIX
) &&
6025 !test_bit(NFS_STATE_POSIX_LOCKS
, &state
->flags
))
6027 /* Is this a delegated open? */
6028 status
= nfs4_set_lock_state(state
, request
);
6031 request
->fl_flags
|= FL_ACCESS
;
6032 status
= do_vfs_lock(state
->inode
, request
);
6035 down_read(&nfsi
->rwsem
);
6036 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
)) {
6037 /* Yes: cache locks! */
6038 /* ...but avoid races with delegation recall... */
6039 request
->fl_flags
= fl_flags
& ~FL_SLEEP
;
6040 status
= do_vfs_lock(state
->inode
, request
);
6041 up_read(&nfsi
->rwsem
);
6044 up_read(&nfsi
->rwsem
);
6045 status
= _nfs4_do_setlk(state
, cmd
, request
, NFS_LOCK_NEW
);
6047 request
->fl_flags
= fl_flags
;
6051 static int nfs4_proc_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
6053 struct nfs4_exception exception
= {
6055 .inode
= state
->inode
,
6060 err
= _nfs4_proc_setlk(state
, cmd
, request
);
6061 trace_nfs4_set_lock(request
, state
, cmd
, err
);
6062 if (err
== -NFS4ERR_DENIED
)
6064 err
= nfs4_handle_exception(NFS_SERVER(state
->inode
),
6066 } while (exception
.retry
);
6071 nfs4_proc_lock(struct file
*filp
, int cmd
, struct file_lock
*request
)
6073 struct nfs_open_context
*ctx
;
6074 struct nfs4_state
*state
;
6075 unsigned long timeout
= NFS4_LOCK_MINTIMEOUT
;
6078 /* verify open state */
6079 ctx
= nfs_file_open_context(filp
);
6082 if (request
->fl_start
< 0 || request
->fl_end
< 0)
6085 if (IS_GETLK(cmd
)) {
6087 return nfs4_proc_getlk(state
, F_GETLK
, request
);
6091 if (!(IS_SETLK(cmd
) || IS_SETLKW(cmd
)))
6094 if (request
->fl_type
== F_UNLCK
) {
6096 return nfs4_proc_unlck(state
, cmd
, request
);
6103 * Don't rely on the VFS having checked the file open mode,
6104 * since it won't do this for flock() locks.
6106 switch (request
->fl_type
) {
6108 if (!(filp
->f_mode
& FMODE_READ
))
6112 if (!(filp
->f_mode
& FMODE_WRITE
))
6117 status
= nfs4_proc_setlk(state
, cmd
, request
);
6118 if ((status
!= -EAGAIN
) || IS_SETLK(cmd
))
6120 timeout
= nfs4_set_lock_task_retry(timeout
);
6121 status
= -ERESTARTSYS
;
6124 } while(status
< 0);
6128 int nfs4_lock_delegation_recall(struct file_lock
*fl
, struct nfs4_state
*state
, const nfs4_stateid
*stateid
)
6130 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
6133 err
= nfs4_set_lock_state(state
, fl
);
6136 err
= _nfs4_do_setlk(state
, F_SETLK
, fl
, NFS_LOCK_NEW
);
6137 return nfs4_handle_delegation_recall_error(server
, state
, stateid
, err
);
6140 struct nfs_release_lockowner_data
{
6141 struct nfs4_lock_state
*lsp
;
6142 struct nfs_server
*server
;
6143 struct nfs_release_lockowner_args args
;
6144 struct nfs_release_lockowner_res res
;
6145 unsigned long timestamp
;
6148 static void nfs4_release_lockowner_prepare(struct rpc_task
*task
, void *calldata
)
6150 struct nfs_release_lockowner_data
*data
= calldata
;
6151 struct nfs_server
*server
= data
->server
;
6152 nfs40_setup_sequence(server
->nfs_client
->cl_slot_tbl
,
6153 &data
->args
.seq_args
, &data
->res
.seq_res
, task
);
6154 data
->args
.lock_owner
.clientid
= server
->nfs_client
->cl_clientid
;
6155 data
->timestamp
= jiffies
;
6158 static void nfs4_release_lockowner_done(struct rpc_task
*task
, void *calldata
)
6160 struct nfs_release_lockowner_data
*data
= calldata
;
6161 struct nfs_server
*server
= data
->server
;
6163 nfs40_sequence_done(task
, &data
->res
.seq_res
);
6165 switch (task
->tk_status
) {
6167 renew_lease(server
, data
->timestamp
);
6169 case -NFS4ERR_STALE_CLIENTID
:
6170 case -NFS4ERR_EXPIRED
:
6171 nfs4_schedule_lease_recovery(server
->nfs_client
);
6173 case -NFS4ERR_LEASE_MOVED
:
6174 case -NFS4ERR_DELAY
:
6175 if (nfs4_async_handle_error(task
, server
,
6176 NULL
, NULL
) == -EAGAIN
)
6177 rpc_restart_call_prepare(task
);
6181 static void nfs4_release_lockowner_release(void *calldata
)
6183 struct nfs_release_lockowner_data
*data
= calldata
;
6184 nfs4_free_lock_state(data
->server
, data
->lsp
);
6188 static const struct rpc_call_ops nfs4_release_lockowner_ops
= {
6189 .rpc_call_prepare
= nfs4_release_lockowner_prepare
,
6190 .rpc_call_done
= nfs4_release_lockowner_done
,
6191 .rpc_release
= nfs4_release_lockowner_release
,
6195 nfs4_release_lockowner(struct nfs_server
*server
, struct nfs4_lock_state
*lsp
)
6197 struct nfs_release_lockowner_data
*data
;
6198 struct rpc_message msg
= {
6199 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RELEASE_LOCKOWNER
],
6202 if (server
->nfs_client
->cl_mvops
->minor_version
!= 0)
6205 data
= kmalloc(sizeof(*data
), GFP_NOFS
);
6209 data
->server
= server
;
6210 data
->args
.lock_owner
.clientid
= server
->nfs_client
->cl_clientid
;
6211 data
->args
.lock_owner
.id
= lsp
->ls_seqid
.owner_id
;
6212 data
->args
.lock_owner
.s_dev
= server
->s_dev
;
6214 msg
.rpc_argp
= &data
->args
;
6215 msg
.rpc_resp
= &data
->res
;
6216 nfs4_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 0);
6217 rpc_call_async(server
->client
, &msg
, 0, &nfs4_release_lockowner_ops
, data
);
6220 #define XATTR_NAME_NFSV4_ACL "system.nfs4_acl"
6222 static int nfs4_xattr_set_nfs4_acl(struct dentry
*dentry
, const char *key
,
6223 const void *buf
, size_t buflen
,
6224 int flags
, int type
)
6226 if (strcmp(key
, "") != 0)
6229 return nfs4_proc_set_acl(d_inode(dentry
), buf
, buflen
);
6232 static int nfs4_xattr_get_nfs4_acl(struct dentry
*dentry
, const char *key
,
6233 void *buf
, size_t buflen
, int type
)
6235 if (strcmp(key
, "") != 0)
6238 return nfs4_proc_get_acl(d_inode(dentry
), buf
, buflen
);
6241 static size_t nfs4_xattr_list_nfs4_acl(struct dentry
*dentry
, char *list
,
6242 size_t list_len
, const char *name
,
6243 size_t name_len
, int type
)
6245 size_t len
= sizeof(XATTR_NAME_NFSV4_ACL
);
6247 if (!nfs4_server_supports_acls(NFS_SERVER(d_inode(dentry
))))
6250 if (list
&& len
<= list_len
)
6251 memcpy(list
, XATTR_NAME_NFSV4_ACL
, len
);
6255 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
6256 static inline int nfs4_server_supports_labels(struct nfs_server
*server
)
6258 return server
->caps
& NFS_CAP_SECURITY_LABEL
;
6261 static int nfs4_xattr_set_nfs4_label(struct dentry
*dentry
, const char *key
,
6262 const void *buf
, size_t buflen
,
6263 int flags
, int type
)
6265 if (security_ismaclabel(key
))
6266 return nfs4_set_security_label(dentry
, buf
, buflen
);
6271 static int nfs4_xattr_get_nfs4_label(struct dentry
*dentry
, const char *key
,
6272 void *buf
, size_t buflen
, int type
)
6274 if (security_ismaclabel(key
))
6275 return nfs4_get_security_label(d_inode(dentry
), buf
, buflen
);
6279 static size_t nfs4_xattr_list_nfs4_label(struct dentry
*dentry
, char *list
,
6280 size_t list_len
, const char *name
,
6281 size_t name_len
, int type
)
6285 if (nfs_server_capable(d_inode(dentry
), NFS_CAP_SECURITY_LABEL
)) {
6286 len
= security_inode_listsecurity(d_inode(dentry
), NULL
, 0);
6287 if (list
&& len
<= list_len
)
6288 security_inode_listsecurity(d_inode(dentry
), list
, len
);
6293 static const struct xattr_handler nfs4_xattr_nfs4_label_handler
= {
6294 .prefix
= XATTR_SECURITY_PREFIX
,
6295 .list
= nfs4_xattr_list_nfs4_label
,
6296 .get
= nfs4_xattr_get_nfs4_label
,
6297 .set
= nfs4_xattr_set_nfs4_label
,
6303 * nfs_fhget will use either the mounted_on_fileid or the fileid
6305 static void nfs_fixup_referral_attributes(struct nfs_fattr
*fattr
)
6307 if (!(((fattr
->valid
& NFS_ATTR_FATTR_MOUNTED_ON_FILEID
) ||
6308 (fattr
->valid
& NFS_ATTR_FATTR_FILEID
)) &&
6309 (fattr
->valid
& NFS_ATTR_FATTR_FSID
) &&
6310 (fattr
->valid
& NFS_ATTR_FATTR_V4_LOCATIONS
)))
6313 fattr
->valid
|= NFS_ATTR_FATTR_TYPE
| NFS_ATTR_FATTR_MODE
|
6314 NFS_ATTR_FATTR_NLINK
| NFS_ATTR_FATTR_V4_REFERRAL
;
6315 fattr
->mode
= S_IFDIR
| S_IRUGO
| S_IXUGO
;
6319 static int _nfs4_proc_fs_locations(struct rpc_clnt
*client
, struct inode
*dir
,
6320 const struct qstr
*name
,
6321 struct nfs4_fs_locations
*fs_locations
,
6324 struct nfs_server
*server
= NFS_SERVER(dir
);
6326 [0] = FATTR4_WORD0_FSID
| FATTR4_WORD0_FS_LOCATIONS
,
6328 struct nfs4_fs_locations_arg args
= {
6329 .dir_fh
= NFS_FH(dir
),
6334 struct nfs4_fs_locations_res res
= {
6335 .fs_locations
= fs_locations
,
6337 struct rpc_message msg
= {
6338 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FS_LOCATIONS
],
6344 dprintk("%s: start\n", __func__
);
6346 /* Ask for the fileid of the absent filesystem if mounted_on_fileid
6347 * is not supported */
6348 if (NFS_SERVER(dir
)->attr_bitmask
[1] & FATTR4_WORD1_MOUNTED_ON_FILEID
)
6349 bitmask
[1] |= FATTR4_WORD1_MOUNTED_ON_FILEID
;
6351 bitmask
[0] |= FATTR4_WORD0_FILEID
;
6353 nfs_fattr_init(&fs_locations
->fattr
);
6354 fs_locations
->server
= server
;
6355 fs_locations
->nlocations
= 0;
6356 status
= nfs4_call_sync(client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
6357 dprintk("%s: returned status = %d\n", __func__
, status
);
6361 int nfs4_proc_fs_locations(struct rpc_clnt
*client
, struct inode
*dir
,
6362 const struct qstr
*name
,
6363 struct nfs4_fs_locations
*fs_locations
,
6366 struct nfs4_exception exception
= { };
6369 err
= _nfs4_proc_fs_locations(client
, dir
, name
,
6370 fs_locations
, page
);
6371 trace_nfs4_get_fs_locations(dir
, name
, err
);
6372 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
6374 } while (exception
.retry
);
6379 * This operation also signals the server that this client is
6380 * performing migration recovery. The server can stop returning
6381 * NFS4ERR_LEASE_MOVED to this client. A RENEW operation is
6382 * appended to this compound to identify the client ID which is
6383 * performing recovery.
6385 static int _nfs40_proc_get_locations(struct inode
*inode
,
6386 struct nfs4_fs_locations
*locations
,
6387 struct page
*page
, struct rpc_cred
*cred
)
6389 struct nfs_server
*server
= NFS_SERVER(inode
);
6390 struct rpc_clnt
*clnt
= server
->client
;
6392 [0] = FATTR4_WORD0_FSID
| FATTR4_WORD0_FS_LOCATIONS
,
6394 struct nfs4_fs_locations_arg args
= {
6395 .clientid
= server
->nfs_client
->cl_clientid
,
6396 .fh
= NFS_FH(inode
),
6399 .migration
= 1, /* skip LOOKUP */
6400 .renew
= 1, /* append RENEW */
6402 struct nfs4_fs_locations_res res
= {
6403 .fs_locations
= locations
,
6407 struct rpc_message msg
= {
6408 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FS_LOCATIONS
],
6413 unsigned long now
= jiffies
;
6416 nfs_fattr_init(&locations
->fattr
);
6417 locations
->server
= server
;
6418 locations
->nlocations
= 0;
6420 nfs4_init_sequence(&args
.seq_args
, &res
.seq_res
, 0);
6421 nfs4_set_sequence_privileged(&args
.seq_args
);
6422 status
= nfs4_call_sync_sequence(clnt
, server
, &msg
,
6423 &args
.seq_args
, &res
.seq_res
);
6427 renew_lease(server
, now
);
6431 #ifdef CONFIG_NFS_V4_1
6434 * This operation also signals the server that this client is
6435 * performing migration recovery. The server can stop asserting
6436 * SEQ4_STATUS_LEASE_MOVED for this client. The client ID
6437 * performing this operation is identified in the SEQUENCE
6438 * operation in this compound.
6440 * When the client supports GETATTR(fs_locations_info), it can
6441 * be plumbed in here.
6443 static int _nfs41_proc_get_locations(struct inode
*inode
,
6444 struct nfs4_fs_locations
*locations
,
6445 struct page
*page
, struct rpc_cred
*cred
)
6447 struct nfs_server
*server
= NFS_SERVER(inode
);
6448 struct rpc_clnt
*clnt
= server
->client
;
6450 [0] = FATTR4_WORD0_FSID
| FATTR4_WORD0_FS_LOCATIONS
,
6452 struct nfs4_fs_locations_arg args
= {
6453 .fh
= NFS_FH(inode
),
6456 .migration
= 1, /* skip LOOKUP */
6458 struct nfs4_fs_locations_res res
= {
6459 .fs_locations
= locations
,
6462 struct rpc_message msg
= {
6463 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FS_LOCATIONS
],
6470 nfs_fattr_init(&locations
->fattr
);
6471 locations
->server
= server
;
6472 locations
->nlocations
= 0;
6474 nfs4_init_sequence(&args
.seq_args
, &res
.seq_res
, 0);
6475 nfs4_set_sequence_privileged(&args
.seq_args
);
6476 status
= nfs4_call_sync_sequence(clnt
, server
, &msg
,
6477 &args
.seq_args
, &res
.seq_res
);
6478 if (status
== NFS4_OK
&&
6479 res
.seq_res
.sr_status_flags
& SEQ4_STATUS_LEASE_MOVED
)
6480 status
= -NFS4ERR_LEASE_MOVED
;
6484 #endif /* CONFIG_NFS_V4_1 */
6487 * nfs4_proc_get_locations - discover locations for a migrated FSID
6488 * @inode: inode on FSID that is migrating
6489 * @locations: result of query
6491 * @cred: credential to use for this operation
6493 * Returns NFS4_OK on success, a negative NFS4ERR status code if the
6494 * operation failed, or a negative errno if a local error occurred.
6496 * On success, "locations" is filled in, but if the server has
6497 * no locations information, NFS_ATTR_FATTR_V4_LOCATIONS is not
6500 * -NFS4ERR_LEASE_MOVED is returned if the server still has leases
6501 * from this client that require migration recovery.
6503 int nfs4_proc_get_locations(struct inode
*inode
,
6504 struct nfs4_fs_locations
*locations
,
6505 struct page
*page
, struct rpc_cred
*cred
)
6507 struct nfs_server
*server
= NFS_SERVER(inode
);
6508 struct nfs_client
*clp
= server
->nfs_client
;
6509 const struct nfs4_mig_recovery_ops
*ops
=
6510 clp
->cl_mvops
->mig_recovery_ops
;
6511 struct nfs4_exception exception
= { };
6514 dprintk("%s: FSID %llx:%llx on \"%s\"\n", __func__
,
6515 (unsigned long long)server
->fsid
.major
,
6516 (unsigned long long)server
->fsid
.minor
,
6518 nfs_display_fhandle(NFS_FH(inode
), __func__
);
6521 status
= ops
->get_locations(inode
, locations
, page
, cred
);
6522 if (status
!= -NFS4ERR_DELAY
)
6524 nfs4_handle_exception(server
, status
, &exception
);
6525 } while (exception
.retry
);
6530 * This operation also signals the server that this client is
6531 * performing "lease moved" recovery. The server can stop
6532 * returning NFS4ERR_LEASE_MOVED to this client. A RENEW operation
6533 * is appended to this compound to identify the client ID which is
6534 * performing recovery.
6536 static int _nfs40_proc_fsid_present(struct inode
*inode
, struct rpc_cred
*cred
)
6538 struct nfs_server
*server
= NFS_SERVER(inode
);
6539 struct nfs_client
*clp
= NFS_SERVER(inode
)->nfs_client
;
6540 struct rpc_clnt
*clnt
= server
->client
;
6541 struct nfs4_fsid_present_arg args
= {
6542 .fh
= NFS_FH(inode
),
6543 .clientid
= clp
->cl_clientid
,
6544 .renew
= 1, /* append RENEW */
6546 struct nfs4_fsid_present_res res
= {
6549 struct rpc_message msg
= {
6550 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FSID_PRESENT
],
6555 unsigned long now
= jiffies
;
6558 res
.fh
= nfs_alloc_fhandle();
6562 nfs4_init_sequence(&args
.seq_args
, &res
.seq_res
, 0);
6563 nfs4_set_sequence_privileged(&args
.seq_args
);
6564 status
= nfs4_call_sync_sequence(clnt
, server
, &msg
,
6565 &args
.seq_args
, &res
.seq_res
);
6566 nfs_free_fhandle(res
.fh
);
6570 do_renew_lease(clp
, now
);
6574 #ifdef CONFIG_NFS_V4_1
6577 * This operation also signals the server that this client is
6578 * performing "lease moved" recovery. The server can stop asserting
6579 * SEQ4_STATUS_LEASE_MOVED for this client. The client ID performing
6580 * this operation is identified in the SEQUENCE operation in this
6583 static int _nfs41_proc_fsid_present(struct inode
*inode
, struct rpc_cred
*cred
)
6585 struct nfs_server
*server
= NFS_SERVER(inode
);
6586 struct rpc_clnt
*clnt
= server
->client
;
6587 struct nfs4_fsid_present_arg args
= {
6588 .fh
= NFS_FH(inode
),
6590 struct nfs4_fsid_present_res res
= {
6592 struct rpc_message msg
= {
6593 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FSID_PRESENT
],
6600 res
.fh
= nfs_alloc_fhandle();
6604 nfs4_init_sequence(&args
.seq_args
, &res
.seq_res
, 0);
6605 nfs4_set_sequence_privileged(&args
.seq_args
);
6606 status
= nfs4_call_sync_sequence(clnt
, server
, &msg
,
6607 &args
.seq_args
, &res
.seq_res
);
6608 nfs_free_fhandle(res
.fh
);
6609 if (status
== NFS4_OK
&&
6610 res
.seq_res
.sr_status_flags
& SEQ4_STATUS_LEASE_MOVED
)
6611 status
= -NFS4ERR_LEASE_MOVED
;
6615 #endif /* CONFIG_NFS_V4_1 */
6618 * nfs4_proc_fsid_present - Is this FSID present or absent on server?
6619 * @inode: inode on FSID to check
6620 * @cred: credential to use for this operation
6622 * Server indicates whether the FSID is present, moved, or not
6623 * recognized. This operation is necessary to clear a LEASE_MOVED
6624 * condition for this client ID.
6626 * Returns NFS4_OK if the FSID is present on this server,
6627 * -NFS4ERR_MOVED if the FSID is no longer present, a negative
6628 * NFS4ERR code if some error occurred on the server, or a
6629 * negative errno if a local failure occurred.
6631 int nfs4_proc_fsid_present(struct inode
*inode
, struct rpc_cred
*cred
)
6633 struct nfs_server
*server
= NFS_SERVER(inode
);
6634 struct nfs_client
*clp
= server
->nfs_client
;
6635 const struct nfs4_mig_recovery_ops
*ops
=
6636 clp
->cl_mvops
->mig_recovery_ops
;
6637 struct nfs4_exception exception
= { };
6640 dprintk("%s: FSID %llx:%llx on \"%s\"\n", __func__
,
6641 (unsigned long long)server
->fsid
.major
,
6642 (unsigned long long)server
->fsid
.minor
,
6644 nfs_display_fhandle(NFS_FH(inode
), __func__
);
6647 status
= ops
->fsid_present(inode
, cred
);
6648 if (status
!= -NFS4ERR_DELAY
)
6650 nfs4_handle_exception(server
, status
, &exception
);
6651 } while (exception
.retry
);
6656 * If 'use_integrity' is true and the state managment nfs_client
6657 * cl_rpcclient is using krb5i/p, use the integrity protected cl_rpcclient
6658 * and the machine credential as per RFC3530bis and RFC5661 Security
6659 * Considerations sections. Otherwise, just use the user cred with the
6660 * filesystem's rpc_client.
6662 static int _nfs4_proc_secinfo(struct inode
*dir
, const struct qstr
*name
, struct nfs4_secinfo_flavors
*flavors
, bool use_integrity
)
6665 struct nfs4_secinfo_arg args
= {
6666 .dir_fh
= NFS_FH(dir
),
6669 struct nfs4_secinfo_res res
= {
6672 struct rpc_message msg
= {
6673 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SECINFO
],
6677 struct rpc_clnt
*clnt
= NFS_SERVER(dir
)->client
;
6678 struct rpc_cred
*cred
= NULL
;
6680 if (use_integrity
) {
6681 clnt
= NFS_SERVER(dir
)->nfs_client
->cl_rpcclient
;
6682 cred
= nfs4_get_clid_cred(NFS_SERVER(dir
)->nfs_client
);
6683 msg
.rpc_cred
= cred
;
6686 dprintk("NFS call secinfo %s\n", name
->name
);
6688 nfs4_state_protect(NFS_SERVER(dir
)->nfs_client
,
6689 NFS_SP4_MACH_CRED_SECINFO
, &clnt
, &msg
);
6691 status
= nfs4_call_sync(clnt
, NFS_SERVER(dir
), &msg
, &args
.seq_args
,
6693 dprintk("NFS reply secinfo: %d\n", status
);
6701 int nfs4_proc_secinfo(struct inode
*dir
, const struct qstr
*name
,
6702 struct nfs4_secinfo_flavors
*flavors
)
6704 struct nfs4_exception exception
= { };
6707 err
= -NFS4ERR_WRONGSEC
;
6709 /* try to use integrity protection with machine cred */
6710 if (_nfs4_is_integrity_protected(NFS_SERVER(dir
)->nfs_client
))
6711 err
= _nfs4_proc_secinfo(dir
, name
, flavors
, true);
6714 * if unable to use integrity protection, or SECINFO with
6715 * integrity protection returns NFS4ERR_WRONGSEC (which is
6716 * disallowed by spec, but exists in deployed servers) use
6717 * the current filesystem's rpc_client and the user cred.
6719 if (err
== -NFS4ERR_WRONGSEC
)
6720 err
= _nfs4_proc_secinfo(dir
, name
, flavors
, false);
6722 trace_nfs4_secinfo(dir
, name
, err
);
6723 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
6725 } while (exception
.retry
);
6729 #ifdef CONFIG_NFS_V4_1
6731 * Check the exchange flags returned by the server for invalid flags, having
6732 * both PNFS and NON_PNFS flags set, and not having one of NON_PNFS, PNFS, or
6735 static int nfs4_check_cl_exchange_flags(u32 flags
)
6737 if (flags
& ~EXCHGID4_FLAG_MASK_R
)
6739 if ((flags
& EXCHGID4_FLAG_USE_PNFS_MDS
) &&
6740 (flags
& EXCHGID4_FLAG_USE_NON_PNFS
))
6742 if (!(flags
& (EXCHGID4_FLAG_MASK_PNFS
)))
6746 return -NFS4ERR_INVAL
;
6750 nfs41_same_server_scope(struct nfs41_server_scope
*a
,
6751 struct nfs41_server_scope
*b
)
6753 if (a
->server_scope_sz
== b
->server_scope_sz
&&
6754 memcmp(a
->server_scope
, b
->server_scope
, a
->server_scope_sz
) == 0)
6761 * nfs4_proc_bind_conn_to_session()
6763 * The 4.1 client currently uses the same TCP connection for the
6764 * fore and backchannel.
6766 int nfs4_proc_bind_conn_to_session(struct nfs_client
*clp
, struct rpc_cred
*cred
)
6769 struct nfs41_bind_conn_to_session_args args
= {
6771 .dir
= NFS4_CDFC4_FORE_OR_BOTH
,
6773 struct nfs41_bind_conn_to_session_res res
;
6774 struct rpc_message msg
= {
6776 &nfs4_procedures
[NFSPROC4_CLNT_BIND_CONN_TO_SESSION
],
6782 dprintk("--> %s\n", __func__
);
6784 nfs4_copy_sessionid(&args
.sessionid
, &clp
->cl_session
->sess_id
);
6785 if (!(clp
->cl_session
->flags
& SESSION4_BACK_CHAN
))
6786 args
.dir
= NFS4_CDFC4_FORE
;
6788 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
6789 trace_nfs4_bind_conn_to_session(clp
, status
);
6791 if (memcmp(res
.sessionid
.data
,
6792 clp
->cl_session
->sess_id
.data
, NFS4_MAX_SESSIONID_LEN
)) {
6793 dprintk("NFS: %s: Session ID mismatch\n", __func__
);
6797 if ((res
.dir
& args
.dir
) != res
.dir
|| res
.dir
== 0) {
6798 dprintk("NFS: %s: Unexpected direction from server\n",
6803 if (res
.use_conn_in_rdma_mode
!= args
.use_conn_in_rdma_mode
) {
6804 dprintk("NFS: %s: Server returned RDMA mode = true\n",
6811 dprintk("<-- %s status= %d\n", __func__
, status
);
6816 * Minimum set of SP4_MACH_CRED operations from RFC 5661 in the enforce map
6817 * and operations we'd like to see to enable certain features in the allow map
6819 static const struct nfs41_state_protection nfs4_sp4_mach_cred_request
= {
6820 .how
= SP4_MACH_CRED
,
6821 .enforce
.u
.words
= {
6822 [1] = 1 << (OP_BIND_CONN_TO_SESSION
- 32) |
6823 1 << (OP_EXCHANGE_ID
- 32) |
6824 1 << (OP_CREATE_SESSION
- 32) |
6825 1 << (OP_DESTROY_SESSION
- 32) |
6826 1 << (OP_DESTROY_CLIENTID
- 32)
6829 [0] = 1 << (OP_CLOSE
) |
6832 [1] = 1 << (OP_SECINFO
- 32) |
6833 1 << (OP_SECINFO_NO_NAME
- 32) |
6834 1 << (OP_TEST_STATEID
- 32) |
6835 1 << (OP_FREE_STATEID
- 32) |
6836 1 << (OP_WRITE
- 32)
6841 * Select the state protection mode for client `clp' given the server results
6842 * from exchange_id in `sp'.
6844 * Returns 0 on success, negative errno otherwise.
6846 static int nfs4_sp4_select_mode(struct nfs_client
*clp
,
6847 struct nfs41_state_protection
*sp
)
6849 static const u32 supported_enforce
[NFS4_OP_MAP_NUM_WORDS
] = {
6850 [1] = 1 << (OP_BIND_CONN_TO_SESSION
- 32) |
6851 1 << (OP_EXCHANGE_ID
- 32) |
6852 1 << (OP_CREATE_SESSION
- 32) |
6853 1 << (OP_DESTROY_SESSION
- 32) |
6854 1 << (OP_DESTROY_CLIENTID
- 32)
6858 if (sp
->how
== SP4_MACH_CRED
) {
6859 /* Print state protect result */
6860 dfprintk(MOUNT
, "Server SP4_MACH_CRED support:\n");
6861 for (i
= 0; i
<= LAST_NFS4_OP
; i
++) {
6862 if (test_bit(i
, sp
->enforce
.u
.longs
))
6863 dfprintk(MOUNT
, " enforce op %d\n", i
);
6864 if (test_bit(i
, sp
->allow
.u
.longs
))
6865 dfprintk(MOUNT
, " allow op %d\n", i
);
6868 /* make sure nothing is on enforce list that isn't supported */
6869 for (i
= 0; i
< NFS4_OP_MAP_NUM_WORDS
; i
++) {
6870 if (sp
->enforce
.u
.words
[i
] & ~supported_enforce
[i
]) {
6871 dfprintk(MOUNT
, "sp4_mach_cred: disabled\n");
6877 * Minimal mode - state operations are allowed to use machine
6878 * credential. Note this already happens by default, so the
6879 * client doesn't have to do anything more than the negotiation.
6881 * NOTE: we don't care if EXCHANGE_ID is in the list -
6882 * we're already using the machine cred for exchange_id
6883 * and will never use a different cred.
6885 if (test_bit(OP_BIND_CONN_TO_SESSION
, sp
->enforce
.u
.longs
) &&
6886 test_bit(OP_CREATE_SESSION
, sp
->enforce
.u
.longs
) &&
6887 test_bit(OP_DESTROY_SESSION
, sp
->enforce
.u
.longs
) &&
6888 test_bit(OP_DESTROY_CLIENTID
, sp
->enforce
.u
.longs
)) {
6889 dfprintk(MOUNT
, "sp4_mach_cred:\n");
6890 dfprintk(MOUNT
, " minimal mode enabled\n");
6891 set_bit(NFS_SP4_MACH_CRED_MINIMAL
, &clp
->cl_sp4_flags
);
6893 dfprintk(MOUNT
, "sp4_mach_cred: disabled\n");
6897 if (test_bit(OP_CLOSE
, sp
->allow
.u
.longs
) &&
6898 test_bit(OP_LOCKU
, sp
->allow
.u
.longs
)) {
6899 dfprintk(MOUNT
, " cleanup mode enabled\n");
6900 set_bit(NFS_SP4_MACH_CRED_CLEANUP
, &clp
->cl_sp4_flags
);
6903 if (test_bit(OP_SECINFO
, sp
->allow
.u
.longs
) &&
6904 test_bit(OP_SECINFO_NO_NAME
, sp
->allow
.u
.longs
)) {
6905 dfprintk(MOUNT
, " secinfo mode enabled\n");
6906 set_bit(NFS_SP4_MACH_CRED_SECINFO
, &clp
->cl_sp4_flags
);
6909 if (test_bit(OP_TEST_STATEID
, sp
->allow
.u
.longs
) &&
6910 test_bit(OP_FREE_STATEID
, sp
->allow
.u
.longs
)) {
6911 dfprintk(MOUNT
, " stateid mode enabled\n");
6912 set_bit(NFS_SP4_MACH_CRED_STATEID
, &clp
->cl_sp4_flags
);
6915 if (test_bit(OP_WRITE
, sp
->allow
.u
.longs
)) {
6916 dfprintk(MOUNT
, " write mode enabled\n");
6917 set_bit(NFS_SP4_MACH_CRED_WRITE
, &clp
->cl_sp4_flags
);
6920 if (test_bit(OP_COMMIT
, sp
->allow
.u
.longs
)) {
6921 dfprintk(MOUNT
, " commit mode enabled\n");
6922 set_bit(NFS_SP4_MACH_CRED_COMMIT
, &clp
->cl_sp4_flags
);
6930 * _nfs4_proc_exchange_id()
6932 * Wrapper for EXCHANGE_ID operation.
6934 static int _nfs4_proc_exchange_id(struct nfs_client
*clp
, struct rpc_cred
*cred
,
6937 nfs4_verifier verifier
;
6938 struct nfs41_exchange_id_args args
= {
6939 .verifier
= &verifier
,
6941 #ifdef CONFIG_NFS_V4_1_MIGRATION
6942 .flags
= EXCHGID4_FLAG_SUPP_MOVED_REFER
|
6943 EXCHGID4_FLAG_BIND_PRINC_STATEID
|
6944 EXCHGID4_FLAG_SUPP_MOVED_MIGR
,
6946 .flags
= EXCHGID4_FLAG_SUPP_MOVED_REFER
|
6947 EXCHGID4_FLAG_BIND_PRINC_STATEID
,
6950 struct nfs41_exchange_id_res res
= {
6954 struct rpc_message msg
= {
6955 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_EXCHANGE_ID
],
6961 nfs4_init_boot_verifier(clp
, &verifier
);
6963 status
= nfs4_init_uniform_client_string(clp
);
6967 dprintk("NFS call exchange_id auth=%s, '%s'\n",
6968 clp
->cl_rpcclient
->cl_auth
->au_ops
->au_name
,
6971 res
.server_owner
= kzalloc(sizeof(struct nfs41_server_owner
),
6973 if (unlikely(res
.server_owner
== NULL
)) {
6978 res
.server_scope
= kzalloc(sizeof(struct nfs41_server_scope
),
6980 if (unlikely(res
.server_scope
== NULL
)) {
6982 goto out_server_owner
;
6985 res
.impl_id
= kzalloc(sizeof(struct nfs41_impl_id
), GFP_NOFS
);
6986 if (unlikely(res
.impl_id
== NULL
)) {
6988 goto out_server_scope
;
6993 args
.state_protect
.how
= SP4_NONE
;
6997 args
.state_protect
= nfs4_sp4_mach_cred_request
;
7007 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
7008 trace_nfs4_exchange_id(clp
, status
);
7010 status
= nfs4_check_cl_exchange_flags(res
.flags
);
7013 status
= nfs4_sp4_select_mode(clp
, &res
.state_protect
);
7016 clp
->cl_clientid
= res
.clientid
;
7017 clp
->cl_exchange_flags
= res
.flags
;
7018 /* Client ID is not confirmed */
7019 if (!(res
.flags
& EXCHGID4_FLAG_CONFIRMED_R
)) {
7020 clear_bit(NFS4_SESSION_ESTABLISHED
,
7021 &clp
->cl_session
->session_state
);
7022 clp
->cl_seqid
= res
.seqid
;
7025 kfree(clp
->cl_serverowner
);
7026 clp
->cl_serverowner
= res
.server_owner
;
7027 res
.server_owner
= NULL
;
7029 /* use the most recent implementation id */
7030 kfree(clp
->cl_implid
);
7031 clp
->cl_implid
= res
.impl_id
;
7034 if (clp
->cl_serverscope
!= NULL
&&
7035 !nfs41_same_server_scope(clp
->cl_serverscope
,
7036 res
.server_scope
)) {
7037 dprintk("%s: server_scope mismatch detected\n",
7039 set_bit(NFS4CLNT_SERVER_SCOPE_MISMATCH
, &clp
->cl_state
);
7040 kfree(clp
->cl_serverscope
);
7041 clp
->cl_serverscope
= NULL
;
7044 if (clp
->cl_serverscope
== NULL
) {
7045 clp
->cl_serverscope
= res
.server_scope
;
7046 res
.server_scope
= NULL
;
7053 kfree(res
.server_scope
);
7055 kfree(res
.server_owner
);
7057 if (clp
->cl_implid
!= NULL
)
7058 dprintk("NFS reply exchange_id: Server Implementation ID: "
7059 "domain: %s, name: %s, date: %llu,%u\n",
7060 clp
->cl_implid
->domain
, clp
->cl_implid
->name
,
7061 clp
->cl_implid
->date
.seconds
,
7062 clp
->cl_implid
->date
.nseconds
);
7063 dprintk("NFS reply exchange_id: %d\n", status
);
7068 * nfs4_proc_exchange_id()
7070 * Returns zero, a negative errno, or a negative NFS4ERR status code.
7072 * Since the clientid has expired, all compounds using sessions
7073 * associated with the stale clientid will be returning
7074 * NFS4ERR_BADSESSION in the sequence operation, and will therefore
7075 * be in some phase of session reset.
7077 * Will attempt to negotiate SP4_MACH_CRED if krb5i / krb5p auth is used.
7079 int nfs4_proc_exchange_id(struct nfs_client
*clp
, struct rpc_cred
*cred
)
7081 rpc_authflavor_t authflavor
= clp
->cl_rpcclient
->cl_auth
->au_flavor
;
7084 /* try SP4_MACH_CRED if krb5i/p */
7085 if (authflavor
== RPC_AUTH_GSS_KRB5I
||
7086 authflavor
== RPC_AUTH_GSS_KRB5P
) {
7087 status
= _nfs4_proc_exchange_id(clp
, cred
, SP4_MACH_CRED
);
7093 return _nfs4_proc_exchange_id(clp
, cred
, SP4_NONE
);
7096 static int _nfs4_proc_destroy_clientid(struct nfs_client
*clp
,
7097 struct rpc_cred
*cred
)
7099 struct rpc_message msg
= {
7100 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DESTROY_CLIENTID
],
7106 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
7107 trace_nfs4_destroy_clientid(clp
, status
);
7109 dprintk("NFS: Got error %d from the server %s on "
7110 "DESTROY_CLIENTID.", status
, clp
->cl_hostname
);
7114 static int nfs4_proc_destroy_clientid(struct nfs_client
*clp
,
7115 struct rpc_cred
*cred
)
7120 for (loop
= NFS4_MAX_LOOP_ON_RECOVER
; loop
!= 0; loop
--) {
7121 ret
= _nfs4_proc_destroy_clientid(clp
, cred
);
7123 case -NFS4ERR_DELAY
:
7124 case -NFS4ERR_CLIENTID_BUSY
:
7134 int nfs4_destroy_clientid(struct nfs_client
*clp
)
7136 struct rpc_cred
*cred
;
7139 if (clp
->cl_mvops
->minor_version
< 1)
7141 if (clp
->cl_exchange_flags
== 0)
7143 if (clp
->cl_preserve_clid
)
7145 cred
= nfs4_get_clid_cred(clp
);
7146 ret
= nfs4_proc_destroy_clientid(clp
, cred
);
7151 case -NFS4ERR_STALE_CLIENTID
:
7152 clp
->cl_exchange_flags
= 0;
7158 struct nfs4_get_lease_time_data
{
7159 struct nfs4_get_lease_time_args
*args
;
7160 struct nfs4_get_lease_time_res
*res
;
7161 struct nfs_client
*clp
;
7164 static void nfs4_get_lease_time_prepare(struct rpc_task
*task
,
7167 struct nfs4_get_lease_time_data
*data
=
7168 (struct nfs4_get_lease_time_data
*)calldata
;
7170 dprintk("--> %s\n", __func__
);
7171 /* just setup sequence, do not trigger session recovery
7172 since we're invoked within one */
7173 nfs41_setup_sequence(data
->clp
->cl_session
,
7174 &data
->args
->la_seq_args
,
7175 &data
->res
->lr_seq_res
,
7177 dprintk("<-- %s\n", __func__
);
7181 * Called from nfs4_state_manager thread for session setup, so don't recover
7182 * from sequence operation or clientid errors.
7184 static void nfs4_get_lease_time_done(struct rpc_task
*task
, void *calldata
)
7186 struct nfs4_get_lease_time_data
*data
=
7187 (struct nfs4_get_lease_time_data
*)calldata
;
7189 dprintk("--> %s\n", __func__
);
7190 if (!nfs41_sequence_done(task
, &data
->res
->lr_seq_res
))
7192 switch (task
->tk_status
) {
7193 case -NFS4ERR_DELAY
:
7194 case -NFS4ERR_GRACE
:
7195 dprintk("%s Retry: tk_status %d\n", __func__
, task
->tk_status
);
7196 rpc_delay(task
, NFS4_POLL_RETRY_MIN
);
7197 task
->tk_status
= 0;
7199 case -NFS4ERR_RETRY_UNCACHED_REP
:
7200 rpc_restart_call_prepare(task
);
7203 dprintk("<-- %s\n", __func__
);
7206 static const struct rpc_call_ops nfs4_get_lease_time_ops
= {
7207 .rpc_call_prepare
= nfs4_get_lease_time_prepare
,
7208 .rpc_call_done
= nfs4_get_lease_time_done
,
7211 int nfs4_proc_get_lease_time(struct nfs_client
*clp
, struct nfs_fsinfo
*fsinfo
)
7213 struct rpc_task
*task
;
7214 struct nfs4_get_lease_time_args args
;
7215 struct nfs4_get_lease_time_res res
= {
7216 .lr_fsinfo
= fsinfo
,
7218 struct nfs4_get_lease_time_data data
= {
7223 struct rpc_message msg
= {
7224 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GET_LEASE_TIME
],
7228 struct rpc_task_setup task_setup
= {
7229 .rpc_client
= clp
->cl_rpcclient
,
7230 .rpc_message
= &msg
,
7231 .callback_ops
= &nfs4_get_lease_time_ops
,
7232 .callback_data
= &data
,
7233 .flags
= RPC_TASK_TIMEOUT
,
7237 nfs4_init_sequence(&args
.la_seq_args
, &res
.lr_seq_res
, 0);
7238 nfs4_set_sequence_privileged(&args
.la_seq_args
);
7239 dprintk("--> %s\n", __func__
);
7240 task
= rpc_run_task(&task_setup
);
7243 status
= PTR_ERR(task
);
7245 status
= task
->tk_status
;
7248 dprintk("<-- %s return %d\n", __func__
, status
);
7254 * Initialize the values to be used by the client in CREATE_SESSION
7255 * If nfs4_init_session set the fore channel request and response sizes,
7258 * Set the back channel max_resp_sz_cached to zero to force the client to
7259 * always set csa_cachethis to FALSE because the current implementation
7260 * of the back channel DRC only supports caching the CB_SEQUENCE operation.
7262 static void nfs4_init_channel_attrs(struct nfs41_create_session_args
*args
)
7264 unsigned int max_rqst_sz
, max_resp_sz
;
7266 max_rqst_sz
= NFS_MAX_FILE_IO_SIZE
+ nfs41_maxwrite_overhead
;
7267 max_resp_sz
= NFS_MAX_FILE_IO_SIZE
+ nfs41_maxread_overhead
;
7269 /* Fore channel attributes */
7270 args
->fc_attrs
.max_rqst_sz
= max_rqst_sz
;
7271 args
->fc_attrs
.max_resp_sz
= max_resp_sz
;
7272 args
->fc_attrs
.max_ops
= NFS4_MAX_OPS
;
7273 args
->fc_attrs
.max_reqs
= max_session_slots
;
7275 dprintk("%s: Fore Channel : max_rqst_sz=%u max_resp_sz=%u "
7276 "max_ops=%u max_reqs=%u\n",
7278 args
->fc_attrs
.max_rqst_sz
, args
->fc_attrs
.max_resp_sz
,
7279 args
->fc_attrs
.max_ops
, args
->fc_attrs
.max_reqs
);
7281 /* Back channel attributes */
7282 args
->bc_attrs
.max_rqst_sz
= PAGE_SIZE
;
7283 args
->bc_attrs
.max_resp_sz
= PAGE_SIZE
;
7284 args
->bc_attrs
.max_resp_sz_cached
= 0;
7285 args
->bc_attrs
.max_ops
= NFS4_MAX_BACK_CHANNEL_OPS
;
7286 args
->bc_attrs
.max_reqs
= 1;
7288 dprintk("%s: Back Channel : max_rqst_sz=%u max_resp_sz=%u "
7289 "max_resp_sz_cached=%u max_ops=%u max_reqs=%u\n",
7291 args
->bc_attrs
.max_rqst_sz
, args
->bc_attrs
.max_resp_sz
,
7292 args
->bc_attrs
.max_resp_sz_cached
, args
->bc_attrs
.max_ops
,
7293 args
->bc_attrs
.max_reqs
);
7296 static int nfs4_verify_fore_channel_attrs(struct nfs41_create_session_args
*args
,
7297 struct nfs41_create_session_res
*res
)
7299 struct nfs4_channel_attrs
*sent
= &args
->fc_attrs
;
7300 struct nfs4_channel_attrs
*rcvd
= &res
->fc_attrs
;
7302 if (rcvd
->max_resp_sz
> sent
->max_resp_sz
)
7305 * Our requested max_ops is the minimum we need; we're not
7306 * prepared to break up compounds into smaller pieces than that.
7307 * So, no point even trying to continue if the server won't
7310 if (rcvd
->max_ops
< sent
->max_ops
)
7312 if (rcvd
->max_reqs
== 0)
7314 if (rcvd
->max_reqs
> NFS4_MAX_SLOT_TABLE
)
7315 rcvd
->max_reqs
= NFS4_MAX_SLOT_TABLE
;
7319 static int nfs4_verify_back_channel_attrs(struct nfs41_create_session_args
*args
,
7320 struct nfs41_create_session_res
*res
)
7322 struct nfs4_channel_attrs
*sent
= &args
->bc_attrs
;
7323 struct nfs4_channel_attrs
*rcvd
= &res
->bc_attrs
;
7325 if (!(res
->flags
& SESSION4_BACK_CHAN
))
7327 if (rcvd
->max_rqst_sz
> sent
->max_rqst_sz
)
7329 if (rcvd
->max_resp_sz
< sent
->max_resp_sz
)
7331 if (rcvd
->max_resp_sz_cached
> sent
->max_resp_sz_cached
)
7333 /* These would render the backchannel useless: */
7334 if (rcvd
->max_ops
!= sent
->max_ops
)
7336 if (rcvd
->max_reqs
!= sent
->max_reqs
)
7342 static int nfs4_verify_channel_attrs(struct nfs41_create_session_args
*args
,
7343 struct nfs41_create_session_res
*res
)
7347 ret
= nfs4_verify_fore_channel_attrs(args
, res
);
7350 return nfs4_verify_back_channel_attrs(args
, res
);
7353 static void nfs4_update_session(struct nfs4_session
*session
,
7354 struct nfs41_create_session_res
*res
)
7356 nfs4_copy_sessionid(&session
->sess_id
, &res
->sessionid
);
7357 /* Mark client id and session as being confirmed */
7358 session
->clp
->cl_exchange_flags
|= EXCHGID4_FLAG_CONFIRMED_R
;
7359 set_bit(NFS4_SESSION_ESTABLISHED
, &session
->session_state
);
7360 session
->flags
= res
->flags
;
7361 memcpy(&session
->fc_attrs
, &res
->fc_attrs
, sizeof(session
->fc_attrs
));
7362 if (res
->flags
& SESSION4_BACK_CHAN
)
7363 memcpy(&session
->bc_attrs
, &res
->bc_attrs
,
7364 sizeof(session
->bc_attrs
));
7367 static int _nfs4_proc_create_session(struct nfs_client
*clp
,
7368 struct rpc_cred
*cred
)
7370 struct nfs4_session
*session
= clp
->cl_session
;
7371 struct nfs41_create_session_args args
= {
7373 .clientid
= clp
->cl_clientid
,
7374 .seqid
= clp
->cl_seqid
,
7375 .cb_program
= NFS4_CALLBACK
,
7377 struct nfs41_create_session_res res
;
7379 struct rpc_message msg
= {
7380 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CREATE_SESSION
],
7387 nfs4_init_channel_attrs(&args
);
7388 args
.flags
= (SESSION4_PERSIST
| SESSION4_BACK_CHAN
);
7390 status
= rpc_call_sync(session
->clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
7391 trace_nfs4_create_session(clp
, status
);
7394 /* Verify the session's negotiated channel_attrs values */
7395 status
= nfs4_verify_channel_attrs(&args
, &res
);
7396 /* Increment the clientid slot sequence id */
7397 if (clp
->cl_seqid
== res
.seqid
)
7401 nfs4_update_session(session
, &res
);
7408 * Issues a CREATE_SESSION operation to the server.
7409 * It is the responsibility of the caller to verify the session is
7410 * expired before calling this routine.
7412 int nfs4_proc_create_session(struct nfs_client
*clp
, struct rpc_cred
*cred
)
7416 struct nfs4_session
*session
= clp
->cl_session
;
7418 dprintk("--> %s clp=%p session=%p\n", __func__
, clp
, session
);
7420 status
= _nfs4_proc_create_session(clp
, cred
);
7424 /* Init or reset the session slot tables */
7425 status
= nfs4_setup_session_slot_tables(session
);
7426 dprintk("slot table setup returned %d\n", status
);
7430 ptr
= (unsigned *)&session
->sess_id
.data
[0];
7431 dprintk("%s client>seqid %d sessionid %u:%u:%u:%u\n", __func__
,
7432 clp
->cl_seqid
, ptr
[0], ptr
[1], ptr
[2], ptr
[3]);
7434 dprintk("<-- %s\n", __func__
);
7439 * Issue the over-the-wire RPC DESTROY_SESSION.
7440 * The caller must serialize access to this routine.
7442 int nfs4_proc_destroy_session(struct nfs4_session
*session
,
7443 struct rpc_cred
*cred
)
7445 struct rpc_message msg
= {
7446 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DESTROY_SESSION
],
7447 .rpc_argp
= session
,
7452 dprintk("--> nfs4_proc_destroy_session\n");
7454 /* session is still being setup */
7455 if (!test_and_clear_bit(NFS4_SESSION_ESTABLISHED
, &session
->session_state
))
7458 status
= rpc_call_sync(session
->clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
7459 trace_nfs4_destroy_session(session
->clp
, status
);
7462 dprintk("NFS: Got error %d from the server on DESTROY_SESSION. "
7463 "Session has been destroyed regardless...\n", status
);
7465 dprintk("<-- nfs4_proc_destroy_session\n");
7470 * Renew the cl_session lease.
7472 struct nfs4_sequence_data
{
7473 struct nfs_client
*clp
;
7474 struct nfs4_sequence_args args
;
7475 struct nfs4_sequence_res res
;
7478 static void nfs41_sequence_release(void *data
)
7480 struct nfs4_sequence_data
*calldata
= data
;
7481 struct nfs_client
*clp
= calldata
->clp
;
7483 if (atomic_read(&clp
->cl_count
) > 1)
7484 nfs4_schedule_state_renewal(clp
);
7485 nfs_put_client(clp
);
7489 static int nfs41_sequence_handle_errors(struct rpc_task
*task
, struct nfs_client
*clp
)
7491 switch(task
->tk_status
) {
7492 case -NFS4ERR_DELAY
:
7493 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
7496 nfs4_schedule_lease_recovery(clp
);
7501 static void nfs41_sequence_call_done(struct rpc_task
*task
, void *data
)
7503 struct nfs4_sequence_data
*calldata
= data
;
7504 struct nfs_client
*clp
= calldata
->clp
;
7506 if (!nfs41_sequence_done(task
, task
->tk_msg
.rpc_resp
))
7509 trace_nfs4_sequence(clp
, task
->tk_status
);
7510 if (task
->tk_status
< 0) {
7511 dprintk("%s ERROR %d\n", __func__
, task
->tk_status
);
7512 if (atomic_read(&clp
->cl_count
) == 1)
7515 if (nfs41_sequence_handle_errors(task
, clp
) == -EAGAIN
) {
7516 rpc_restart_call_prepare(task
);
7520 dprintk("%s rpc_cred %p\n", __func__
, task
->tk_msg
.rpc_cred
);
7522 dprintk("<-- %s\n", __func__
);
7525 static void nfs41_sequence_prepare(struct rpc_task
*task
, void *data
)
7527 struct nfs4_sequence_data
*calldata
= data
;
7528 struct nfs_client
*clp
= calldata
->clp
;
7529 struct nfs4_sequence_args
*args
;
7530 struct nfs4_sequence_res
*res
;
7532 args
= task
->tk_msg
.rpc_argp
;
7533 res
= task
->tk_msg
.rpc_resp
;
7535 nfs41_setup_sequence(clp
->cl_session
, args
, res
, task
);
7538 static const struct rpc_call_ops nfs41_sequence_ops
= {
7539 .rpc_call_done
= nfs41_sequence_call_done
,
7540 .rpc_call_prepare
= nfs41_sequence_prepare
,
7541 .rpc_release
= nfs41_sequence_release
,
7544 static struct rpc_task
*_nfs41_proc_sequence(struct nfs_client
*clp
,
7545 struct rpc_cred
*cred
,
7548 struct nfs4_sequence_data
*calldata
;
7549 struct rpc_message msg
= {
7550 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SEQUENCE
],
7553 struct rpc_task_setup task_setup_data
= {
7554 .rpc_client
= clp
->cl_rpcclient
,
7555 .rpc_message
= &msg
,
7556 .callback_ops
= &nfs41_sequence_ops
,
7557 .flags
= RPC_TASK_ASYNC
| RPC_TASK_TIMEOUT
,
7560 if (!atomic_inc_not_zero(&clp
->cl_count
))
7561 return ERR_PTR(-EIO
);
7562 calldata
= kzalloc(sizeof(*calldata
), GFP_NOFS
);
7563 if (calldata
== NULL
) {
7564 nfs_put_client(clp
);
7565 return ERR_PTR(-ENOMEM
);
7567 nfs4_init_sequence(&calldata
->args
, &calldata
->res
, 0);
7569 nfs4_set_sequence_privileged(&calldata
->args
);
7570 msg
.rpc_argp
= &calldata
->args
;
7571 msg
.rpc_resp
= &calldata
->res
;
7572 calldata
->clp
= clp
;
7573 task_setup_data
.callback_data
= calldata
;
7575 return rpc_run_task(&task_setup_data
);
7578 static int nfs41_proc_async_sequence(struct nfs_client
*clp
, struct rpc_cred
*cred
, unsigned renew_flags
)
7580 struct rpc_task
*task
;
7583 if ((renew_flags
& NFS4_RENEW_TIMEOUT
) == 0)
7585 task
= _nfs41_proc_sequence(clp
, cred
, false);
7587 ret
= PTR_ERR(task
);
7589 rpc_put_task_async(task
);
7590 dprintk("<-- %s status=%d\n", __func__
, ret
);
7594 static int nfs4_proc_sequence(struct nfs_client
*clp
, struct rpc_cred
*cred
)
7596 struct rpc_task
*task
;
7599 task
= _nfs41_proc_sequence(clp
, cred
, true);
7601 ret
= PTR_ERR(task
);
7604 ret
= rpc_wait_for_completion_task(task
);
7606 ret
= task
->tk_status
;
7609 dprintk("<-- %s status=%d\n", __func__
, ret
);
7613 struct nfs4_reclaim_complete_data
{
7614 struct nfs_client
*clp
;
7615 struct nfs41_reclaim_complete_args arg
;
7616 struct nfs41_reclaim_complete_res res
;
7619 static void nfs4_reclaim_complete_prepare(struct rpc_task
*task
, void *data
)
7621 struct nfs4_reclaim_complete_data
*calldata
= data
;
7623 nfs41_setup_sequence(calldata
->clp
->cl_session
,
7624 &calldata
->arg
.seq_args
,
7625 &calldata
->res
.seq_res
,
7629 static int nfs41_reclaim_complete_handle_errors(struct rpc_task
*task
, struct nfs_client
*clp
)
7631 switch(task
->tk_status
) {
7633 case -NFS4ERR_COMPLETE_ALREADY
:
7634 case -NFS4ERR_WRONG_CRED
: /* What to do here? */
7636 case -NFS4ERR_DELAY
:
7637 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
7639 case -NFS4ERR_RETRY_UNCACHED_REP
:
7642 nfs4_schedule_lease_recovery(clp
);
7647 static void nfs4_reclaim_complete_done(struct rpc_task
*task
, void *data
)
7649 struct nfs4_reclaim_complete_data
*calldata
= data
;
7650 struct nfs_client
*clp
= calldata
->clp
;
7651 struct nfs4_sequence_res
*res
= &calldata
->res
.seq_res
;
7653 dprintk("--> %s\n", __func__
);
7654 if (!nfs41_sequence_done(task
, res
))
7657 trace_nfs4_reclaim_complete(clp
, task
->tk_status
);
7658 if (nfs41_reclaim_complete_handle_errors(task
, clp
) == -EAGAIN
) {
7659 rpc_restart_call_prepare(task
);
7662 dprintk("<-- %s\n", __func__
);
7665 static void nfs4_free_reclaim_complete_data(void *data
)
7667 struct nfs4_reclaim_complete_data
*calldata
= data
;
7672 static const struct rpc_call_ops nfs4_reclaim_complete_call_ops
= {
7673 .rpc_call_prepare
= nfs4_reclaim_complete_prepare
,
7674 .rpc_call_done
= nfs4_reclaim_complete_done
,
7675 .rpc_release
= nfs4_free_reclaim_complete_data
,
7679 * Issue a global reclaim complete.
7681 static int nfs41_proc_reclaim_complete(struct nfs_client
*clp
,
7682 struct rpc_cred
*cred
)
7684 struct nfs4_reclaim_complete_data
*calldata
;
7685 struct rpc_task
*task
;
7686 struct rpc_message msg
= {
7687 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RECLAIM_COMPLETE
],
7690 struct rpc_task_setup task_setup_data
= {
7691 .rpc_client
= clp
->cl_rpcclient
,
7692 .rpc_message
= &msg
,
7693 .callback_ops
= &nfs4_reclaim_complete_call_ops
,
7694 .flags
= RPC_TASK_ASYNC
,
7696 int status
= -ENOMEM
;
7698 dprintk("--> %s\n", __func__
);
7699 calldata
= kzalloc(sizeof(*calldata
), GFP_NOFS
);
7700 if (calldata
== NULL
)
7702 calldata
->clp
= clp
;
7703 calldata
->arg
.one_fs
= 0;
7705 nfs4_init_sequence(&calldata
->arg
.seq_args
, &calldata
->res
.seq_res
, 0);
7706 nfs4_set_sequence_privileged(&calldata
->arg
.seq_args
);
7707 msg
.rpc_argp
= &calldata
->arg
;
7708 msg
.rpc_resp
= &calldata
->res
;
7709 task_setup_data
.callback_data
= calldata
;
7710 task
= rpc_run_task(&task_setup_data
);
7712 status
= PTR_ERR(task
);
7715 status
= nfs4_wait_for_completion_rpc_task(task
);
7717 status
= task
->tk_status
;
7721 dprintk("<-- %s status=%d\n", __func__
, status
);
7726 nfs4_layoutget_prepare(struct rpc_task
*task
, void *calldata
)
7728 struct nfs4_layoutget
*lgp
= calldata
;
7729 struct nfs_server
*server
= NFS_SERVER(lgp
->args
.inode
);
7730 struct nfs4_session
*session
= nfs4_get_session(server
);
7732 dprintk("--> %s\n", __func__
);
7733 /* Note the is a race here, where a CB_LAYOUTRECALL can come in
7734 * right now covering the LAYOUTGET we are about to send.
7735 * However, that is not so catastrophic, and there seems
7736 * to be no way to prevent it completely.
7738 if (nfs41_setup_sequence(session
, &lgp
->args
.seq_args
,
7739 &lgp
->res
.seq_res
, task
))
7741 if (pnfs_choose_layoutget_stateid(&lgp
->args
.stateid
,
7742 NFS_I(lgp
->args
.inode
)->layout
,
7744 lgp
->args
.ctx
->state
)) {
7745 rpc_exit(task
, NFS4_OK
);
7749 static void nfs4_layoutget_done(struct rpc_task
*task
, void *calldata
)
7751 struct nfs4_layoutget
*lgp
= calldata
;
7752 struct inode
*inode
= lgp
->args
.inode
;
7753 struct nfs_server
*server
= NFS_SERVER(inode
);
7754 struct pnfs_layout_hdr
*lo
;
7755 struct nfs4_state
*state
= NULL
;
7756 unsigned long timeo
, now
, giveup
;
7758 dprintk("--> %s tk_status => %d\n", __func__
, -task
->tk_status
);
7760 if (!nfs41_sequence_done(task
, &lgp
->res
.seq_res
))
7763 switch (task
->tk_status
) {
7767 * NFS4ERR_BADLAYOUT means the MDS cannot return a layout of
7768 * length lgp->args.minlength != 0 (see RFC5661 section 18.43.3).
7770 case -NFS4ERR_BADLAYOUT
:
7773 * NFS4ERR_LAYOUTTRYLATER is a conflict with another client
7774 * (or clients) writing to the same RAID stripe except when
7775 * the minlength argument is 0 (see RFC5661 section 18.43.3).
7777 case -NFS4ERR_LAYOUTTRYLATER
:
7778 if (lgp
->args
.minlength
== 0)
7781 * NFS4ERR_RECALLCONFLICT is when conflict with self (must recall
7782 * existing layout before getting a new one).
7784 case -NFS4ERR_RECALLCONFLICT
:
7785 timeo
= rpc_get_timeout(task
->tk_client
);
7786 giveup
= lgp
->args
.timestamp
+ timeo
;
7788 if (time_after(giveup
, now
)) {
7789 unsigned long delay
;
7792 * - Not less then NFS4_POLL_RETRY_MIN.
7793 * - One last time a jiffie before we give up
7794 * - exponential backoff (time_now minus start_attempt)
7796 delay
= max_t(unsigned long, NFS4_POLL_RETRY_MIN
,
7797 min((giveup
- now
- 1),
7798 now
- lgp
->args
.timestamp
));
7800 dprintk("%s: NFS4ERR_RECALLCONFLICT waiting %lu\n",
7802 rpc_delay(task
, delay
);
7803 task
->tk_status
= 0;
7804 rpc_restart_call_prepare(task
);
7805 goto out
; /* Do not call nfs4_async_handle_error() */
7808 case -NFS4ERR_EXPIRED
:
7809 case -NFS4ERR_BAD_STATEID
:
7810 spin_lock(&inode
->i_lock
);
7811 lo
= NFS_I(inode
)->layout
;
7812 if (!lo
|| list_empty(&lo
->plh_segs
)) {
7813 spin_unlock(&inode
->i_lock
);
7814 /* If the open stateid was bad, then recover it. */
7815 state
= lgp
->args
.ctx
->state
;
7820 * Mark the bad layout state as invalid, then retry
7821 * with the current stateid.
7823 pnfs_mark_matching_lsegs_invalid(lo
, &head
, NULL
);
7824 spin_unlock(&inode
->i_lock
);
7825 pnfs_free_lseg_list(&head
);
7827 task
->tk_status
= 0;
7828 rpc_restart_call_prepare(task
);
7831 if (nfs4_async_handle_error(task
, server
, state
, NULL
) == -EAGAIN
)
7832 rpc_restart_call_prepare(task
);
7834 dprintk("<-- %s\n", __func__
);
7837 task
->tk_status
= -EOVERFLOW
;
7841 static size_t max_response_pages(struct nfs_server
*server
)
7843 u32 max_resp_sz
= server
->nfs_client
->cl_session
->fc_attrs
.max_resp_sz
;
7844 return nfs_page_array_len(0, max_resp_sz
);
7847 static void nfs4_free_pages(struct page
**pages
, size_t size
)
7854 for (i
= 0; i
< size
; i
++) {
7857 __free_page(pages
[i
]);
7862 static struct page
**nfs4_alloc_pages(size_t size
, gfp_t gfp_flags
)
7864 struct page
**pages
;
7867 pages
= kcalloc(size
, sizeof(struct page
*), gfp_flags
);
7869 dprintk("%s: can't alloc array of %zu pages\n", __func__
, size
);
7873 for (i
= 0; i
< size
; i
++) {
7874 pages
[i
] = alloc_page(gfp_flags
);
7876 dprintk("%s: failed to allocate page\n", __func__
);
7877 nfs4_free_pages(pages
, size
);
7885 static void nfs4_layoutget_release(void *calldata
)
7887 struct nfs4_layoutget
*lgp
= calldata
;
7888 struct inode
*inode
= lgp
->args
.inode
;
7889 struct nfs_server
*server
= NFS_SERVER(inode
);
7890 size_t max_pages
= max_response_pages(server
);
7892 dprintk("--> %s\n", __func__
);
7893 nfs4_free_pages(lgp
->args
.layout
.pages
, max_pages
);
7894 pnfs_put_layout_hdr(NFS_I(inode
)->layout
);
7895 put_nfs_open_context(lgp
->args
.ctx
);
7897 dprintk("<-- %s\n", __func__
);
7900 static const struct rpc_call_ops nfs4_layoutget_call_ops
= {
7901 .rpc_call_prepare
= nfs4_layoutget_prepare
,
7902 .rpc_call_done
= nfs4_layoutget_done
,
7903 .rpc_release
= nfs4_layoutget_release
,
7906 struct pnfs_layout_segment
*
7907 nfs4_proc_layoutget(struct nfs4_layoutget
*lgp
, gfp_t gfp_flags
)
7909 struct inode
*inode
= lgp
->args
.inode
;
7910 struct nfs_server
*server
= NFS_SERVER(inode
);
7911 size_t max_pages
= max_response_pages(server
);
7912 struct rpc_task
*task
;
7913 struct rpc_message msg
= {
7914 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LAYOUTGET
],
7915 .rpc_argp
= &lgp
->args
,
7916 .rpc_resp
= &lgp
->res
,
7917 .rpc_cred
= lgp
->cred
,
7919 struct rpc_task_setup task_setup_data
= {
7920 .rpc_client
= server
->client
,
7921 .rpc_message
= &msg
,
7922 .callback_ops
= &nfs4_layoutget_call_ops
,
7923 .callback_data
= lgp
,
7924 .flags
= RPC_TASK_ASYNC
,
7926 struct pnfs_layout_segment
*lseg
= NULL
;
7929 dprintk("--> %s\n", __func__
);
7931 /* nfs4_layoutget_release calls pnfs_put_layout_hdr */
7932 pnfs_get_layout_hdr(NFS_I(inode
)->layout
);
7934 lgp
->args
.layout
.pages
= nfs4_alloc_pages(max_pages
, gfp_flags
);
7935 if (!lgp
->args
.layout
.pages
) {
7936 nfs4_layoutget_release(lgp
);
7937 return ERR_PTR(-ENOMEM
);
7939 lgp
->args
.layout
.pglen
= max_pages
* PAGE_SIZE
;
7940 lgp
->args
.timestamp
= jiffies
;
7942 lgp
->res
.layoutp
= &lgp
->args
.layout
;
7943 lgp
->res
.seq_res
.sr_slot
= NULL
;
7944 nfs4_init_sequence(&lgp
->args
.seq_args
, &lgp
->res
.seq_res
, 0);
7946 task
= rpc_run_task(&task_setup_data
);
7948 return ERR_CAST(task
);
7949 status
= nfs4_wait_for_completion_rpc_task(task
);
7951 status
= task
->tk_status
;
7952 trace_nfs4_layoutget(lgp
->args
.ctx
,
7956 /* if layoutp->len is 0, nfs4_layoutget_prepare called rpc_exit */
7957 if (status
== 0 && lgp
->res
.layoutp
->len
)
7958 lseg
= pnfs_layout_process(lgp
);
7960 dprintk("<-- %s status=%d\n", __func__
, status
);
7962 return ERR_PTR(status
);
7967 nfs4_layoutreturn_prepare(struct rpc_task
*task
, void *calldata
)
7969 struct nfs4_layoutreturn
*lrp
= calldata
;
7971 dprintk("--> %s\n", __func__
);
7972 nfs41_setup_sequence(lrp
->clp
->cl_session
,
7973 &lrp
->args
.seq_args
,
7978 static void nfs4_layoutreturn_done(struct rpc_task
*task
, void *calldata
)
7980 struct nfs4_layoutreturn
*lrp
= calldata
;
7981 struct nfs_server
*server
;
7983 dprintk("--> %s\n", __func__
);
7985 if (!nfs41_sequence_done(task
, &lrp
->res
.seq_res
))
7988 server
= NFS_SERVER(lrp
->args
.inode
);
7989 switch (task
->tk_status
) {
7991 task
->tk_status
= 0;
7994 case -NFS4ERR_DELAY
:
7995 if (nfs4_async_handle_error(task
, server
, NULL
, NULL
) != -EAGAIN
)
7997 rpc_restart_call_prepare(task
);
8000 dprintk("<-- %s\n", __func__
);
8003 static void nfs4_layoutreturn_release(void *calldata
)
8005 struct nfs4_layoutreturn
*lrp
= calldata
;
8006 struct pnfs_layout_hdr
*lo
= lrp
->args
.layout
;
8009 dprintk("--> %s\n", __func__
);
8010 spin_lock(&lo
->plh_inode
->i_lock
);
8011 if (lrp
->res
.lrs_present
)
8012 pnfs_set_layout_stateid(lo
, &lrp
->res
.stateid
, true);
8013 pnfs_mark_matching_lsegs_invalid(lo
, &freeme
, &lrp
->args
.range
);
8014 pnfs_clear_layoutreturn_waitbit(lo
);
8015 lo
->plh_block_lgets
--;
8016 spin_unlock(&lo
->plh_inode
->i_lock
);
8017 pnfs_free_lseg_list(&freeme
);
8018 pnfs_put_layout_hdr(lrp
->args
.layout
);
8019 nfs_iput_and_deactive(lrp
->inode
);
8021 dprintk("<-- %s\n", __func__
);
8024 static const struct rpc_call_ops nfs4_layoutreturn_call_ops
= {
8025 .rpc_call_prepare
= nfs4_layoutreturn_prepare
,
8026 .rpc_call_done
= nfs4_layoutreturn_done
,
8027 .rpc_release
= nfs4_layoutreturn_release
,
8030 int nfs4_proc_layoutreturn(struct nfs4_layoutreturn
*lrp
, bool sync
)
8032 struct rpc_task
*task
;
8033 struct rpc_message msg
= {
8034 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LAYOUTRETURN
],
8035 .rpc_argp
= &lrp
->args
,
8036 .rpc_resp
= &lrp
->res
,
8037 .rpc_cred
= lrp
->cred
,
8039 struct rpc_task_setup task_setup_data
= {
8040 .rpc_client
= NFS_SERVER(lrp
->args
.inode
)->client
,
8041 .rpc_message
= &msg
,
8042 .callback_ops
= &nfs4_layoutreturn_call_ops
,
8043 .callback_data
= lrp
,
8047 dprintk("--> %s\n", __func__
);
8049 lrp
->inode
= nfs_igrab_and_active(lrp
->args
.inode
);
8051 nfs4_layoutreturn_release(lrp
);
8054 task_setup_data
.flags
|= RPC_TASK_ASYNC
;
8056 nfs4_init_sequence(&lrp
->args
.seq_args
, &lrp
->res
.seq_res
, 1);
8057 task
= rpc_run_task(&task_setup_data
);
8059 return PTR_ERR(task
);
8061 status
= task
->tk_status
;
8062 trace_nfs4_layoutreturn(lrp
->args
.inode
, status
);
8063 dprintk("<-- %s status=%d\n", __func__
, status
);
8069 _nfs4_proc_getdeviceinfo(struct nfs_server
*server
,
8070 struct pnfs_device
*pdev
,
8071 struct rpc_cred
*cred
)
8073 struct nfs4_getdeviceinfo_args args
= {
8075 .notify_types
= NOTIFY_DEVICEID4_CHANGE
|
8076 NOTIFY_DEVICEID4_DELETE
,
8078 struct nfs4_getdeviceinfo_res res
= {
8081 struct rpc_message msg
= {
8082 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETDEVICEINFO
],
8089 dprintk("--> %s\n", __func__
);
8090 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
8091 if (res
.notification
& ~args
.notify_types
)
8092 dprintk("%s: unsupported notification\n", __func__
);
8093 if (res
.notification
!= args
.notify_types
)
8096 dprintk("<-- %s status=%d\n", __func__
, status
);
8101 int nfs4_proc_getdeviceinfo(struct nfs_server
*server
,
8102 struct pnfs_device
*pdev
,
8103 struct rpc_cred
*cred
)
8105 struct nfs4_exception exception
= { };
8109 err
= nfs4_handle_exception(server
,
8110 _nfs4_proc_getdeviceinfo(server
, pdev
, cred
),
8112 } while (exception
.retry
);
8115 EXPORT_SYMBOL_GPL(nfs4_proc_getdeviceinfo
);
8117 static void nfs4_layoutcommit_prepare(struct rpc_task
*task
, void *calldata
)
8119 struct nfs4_layoutcommit_data
*data
= calldata
;
8120 struct nfs_server
*server
= NFS_SERVER(data
->args
.inode
);
8121 struct nfs4_session
*session
= nfs4_get_session(server
);
8123 nfs41_setup_sequence(session
,
8124 &data
->args
.seq_args
,
8130 nfs4_layoutcommit_done(struct rpc_task
*task
, void *calldata
)
8132 struct nfs4_layoutcommit_data
*data
= calldata
;
8133 struct nfs_server
*server
= NFS_SERVER(data
->args
.inode
);
8135 if (!nfs41_sequence_done(task
, &data
->res
.seq_res
))
8138 switch (task
->tk_status
) { /* Just ignore these failures */
8139 case -NFS4ERR_DELEG_REVOKED
: /* layout was recalled */
8140 case -NFS4ERR_BADIOMODE
: /* no IOMODE_RW layout for range */
8141 case -NFS4ERR_BADLAYOUT
: /* no layout */
8142 case -NFS4ERR_GRACE
: /* loca_recalim always false */
8143 task
->tk_status
= 0;
8147 if (nfs4_async_handle_error(task
, server
, NULL
, NULL
) == -EAGAIN
) {
8148 rpc_restart_call_prepare(task
);
8154 static void nfs4_layoutcommit_release(void *calldata
)
8156 struct nfs4_layoutcommit_data
*data
= calldata
;
8158 pnfs_cleanup_layoutcommit(data
);
8159 nfs_post_op_update_inode_force_wcc(data
->args
.inode
,
8161 put_rpccred(data
->cred
);
8162 nfs_iput_and_deactive(data
->inode
);
8166 static const struct rpc_call_ops nfs4_layoutcommit_ops
= {
8167 .rpc_call_prepare
= nfs4_layoutcommit_prepare
,
8168 .rpc_call_done
= nfs4_layoutcommit_done
,
8169 .rpc_release
= nfs4_layoutcommit_release
,
8173 nfs4_proc_layoutcommit(struct nfs4_layoutcommit_data
*data
, bool sync
)
8175 struct rpc_message msg
= {
8176 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LAYOUTCOMMIT
],
8177 .rpc_argp
= &data
->args
,
8178 .rpc_resp
= &data
->res
,
8179 .rpc_cred
= data
->cred
,
8181 struct rpc_task_setup task_setup_data
= {
8182 .task
= &data
->task
,
8183 .rpc_client
= NFS_CLIENT(data
->args
.inode
),
8184 .rpc_message
= &msg
,
8185 .callback_ops
= &nfs4_layoutcommit_ops
,
8186 .callback_data
= data
,
8188 struct rpc_task
*task
;
8191 dprintk("NFS: initiating layoutcommit call. sync %d "
8192 "lbw: %llu inode %lu\n", sync
,
8193 data
->args
.lastbytewritten
,
8194 data
->args
.inode
->i_ino
);
8197 data
->inode
= nfs_igrab_and_active(data
->args
.inode
);
8198 if (data
->inode
== NULL
) {
8199 nfs4_layoutcommit_release(data
);
8202 task_setup_data
.flags
= RPC_TASK_ASYNC
;
8204 nfs4_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
8205 task
= rpc_run_task(&task_setup_data
);
8207 return PTR_ERR(task
);
8209 status
= task
->tk_status
;
8210 trace_nfs4_layoutcommit(data
->args
.inode
, status
);
8211 dprintk("%s: status %d\n", __func__
, status
);
8217 * Use the state managment nfs_client cl_rpcclient, which uses krb5i (if
8218 * possible) as per RFC3530bis and RFC5661 Security Considerations sections
8221 _nfs41_proc_secinfo_no_name(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
8222 struct nfs_fsinfo
*info
,
8223 struct nfs4_secinfo_flavors
*flavors
, bool use_integrity
)
8225 struct nfs41_secinfo_no_name_args args
= {
8226 .style
= SECINFO_STYLE_CURRENT_FH
,
8228 struct nfs4_secinfo_res res
= {
8231 struct rpc_message msg
= {
8232 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SECINFO_NO_NAME
],
8236 struct rpc_clnt
*clnt
= server
->client
;
8237 struct rpc_cred
*cred
= NULL
;
8240 if (use_integrity
) {
8241 clnt
= server
->nfs_client
->cl_rpcclient
;
8242 cred
= nfs4_get_clid_cred(server
->nfs_client
);
8243 msg
.rpc_cred
= cred
;
8246 dprintk("--> %s\n", __func__
);
8247 status
= nfs4_call_sync(clnt
, server
, &msg
, &args
.seq_args
,
8249 dprintk("<-- %s status=%d\n", __func__
, status
);
8258 nfs41_proc_secinfo_no_name(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
8259 struct nfs_fsinfo
*info
, struct nfs4_secinfo_flavors
*flavors
)
8261 struct nfs4_exception exception
= { };
8264 /* first try using integrity protection */
8265 err
= -NFS4ERR_WRONGSEC
;
8267 /* try to use integrity protection with machine cred */
8268 if (_nfs4_is_integrity_protected(server
->nfs_client
))
8269 err
= _nfs41_proc_secinfo_no_name(server
, fhandle
, info
,
8273 * if unable to use integrity protection, or SECINFO with
8274 * integrity protection returns NFS4ERR_WRONGSEC (which is
8275 * disallowed by spec, but exists in deployed servers) use
8276 * the current filesystem's rpc_client and the user cred.
8278 if (err
== -NFS4ERR_WRONGSEC
)
8279 err
= _nfs41_proc_secinfo_no_name(server
, fhandle
, info
,
8284 case -NFS4ERR_WRONGSEC
:
8288 err
= nfs4_handle_exception(server
, err
, &exception
);
8290 } while (exception
.retry
);
8296 nfs41_find_root_sec(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
8297 struct nfs_fsinfo
*info
)
8301 rpc_authflavor_t flavor
= RPC_AUTH_MAXFLAVOR
;
8302 struct nfs4_secinfo_flavors
*flavors
;
8303 struct nfs4_secinfo4
*secinfo
;
8306 page
= alloc_page(GFP_KERNEL
);
8312 flavors
= page_address(page
);
8313 err
= nfs41_proc_secinfo_no_name(server
, fhandle
, info
, flavors
);
8316 * Fall back on "guess and check" method if
8317 * the server doesn't support SECINFO_NO_NAME
8319 if (err
== -NFS4ERR_WRONGSEC
|| err
== -ENOTSUPP
) {
8320 err
= nfs4_find_root_sec(server
, fhandle
, info
);
8326 for (i
= 0; i
< flavors
->num_flavors
; i
++) {
8327 secinfo
= &flavors
->flavors
[i
];
8329 switch (secinfo
->flavor
) {
8333 flavor
= rpcauth_get_pseudoflavor(secinfo
->flavor
,
8334 &secinfo
->flavor_info
);
8337 flavor
= RPC_AUTH_MAXFLAVOR
;
8341 if (!nfs_auth_info_match(&server
->auth_info
, flavor
))
8342 flavor
= RPC_AUTH_MAXFLAVOR
;
8344 if (flavor
!= RPC_AUTH_MAXFLAVOR
) {
8345 err
= nfs4_lookup_root_sec(server
, fhandle
,
8352 if (flavor
== RPC_AUTH_MAXFLAVOR
)
8363 static int _nfs41_test_stateid(struct nfs_server
*server
,
8364 nfs4_stateid
*stateid
,
8365 struct rpc_cred
*cred
)
8368 struct nfs41_test_stateid_args args
= {
8371 struct nfs41_test_stateid_res res
;
8372 struct rpc_message msg
= {
8373 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_TEST_STATEID
],
8378 struct rpc_clnt
*rpc_client
= server
->client
;
8380 nfs4_state_protect(server
->nfs_client
, NFS_SP4_MACH_CRED_STATEID
,
8383 dprintk("NFS call test_stateid %p\n", stateid
);
8384 nfs4_init_sequence(&args
.seq_args
, &res
.seq_res
, 0);
8385 nfs4_set_sequence_privileged(&args
.seq_args
);
8386 status
= nfs4_call_sync_sequence(rpc_client
, server
, &msg
,
8387 &args
.seq_args
, &res
.seq_res
);
8388 if (status
!= NFS_OK
) {
8389 dprintk("NFS reply test_stateid: failed, %d\n", status
);
8392 dprintk("NFS reply test_stateid: succeeded, %d\n", -res
.status
);
8397 * nfs41_test_stateid - perform a TEST_STATEID operation
8399 * @server: server / transport on which to perform the operation
8400 * @stateid: state ID to test
8403 * Returns NFS_OK if the server recognizes that "stateid" is valid.
8404 * Otherwise a negative NFS4ERR value is returned if the operation
8405 * failed or the state ID is not currently valid.
8407 static int nfs41_test_stateid(struct nfs_server
*server
,
8408 nfs4_stateid
*stateid
,
8409 struct rpc_cred
*cred
)
8411 struct nfs4_exception exception
= { };
8414 err
= _nfs41_test_stateid(server
, stateid
, cred
);
8415 if (err
!= -NFS4ERR_DELAY
)
8417 nfs4_handle_exception(server
, err
, &exception
);
8418 } while (exception
.retry
);
8422 struct nfs_free_stateid_data
{
8423 struct nfs_server
*server
;
8424 struct nfs41_free_stateid_args args
;
8425 struct nfs41_free_stateid_res res
;
8428 static void nfs41_free_stateid_prepare(struct rpc_task
*task
, void *calldata
)
8430 struct nfs_free_stateid_data
*data
= calldata
;
8431 nfs41_setup_sequence(nfs4_get_session(data
->server
),
8432 &data
->args
.seq_args
,
8437 static void nfs41_free_stateid_done(struct rpc_task
*task
, void *calldata
)
8439 struct nfs_free_stateid_data
*data
= calldata
;
8441 nfs41_sequence_done(task
, &data
->res
.seq_res
);
8443 switch (task
->tk_status
) {
8444 case -NFS4ERR_DELAY
:
8445 if (nfs4_async_handle_error(task
, data
->server
, NULL
, NULL
) == -EAGAIN
)
8446 rpc_restart_call_prepare(task
);
8450 static void nfs41_free_stateid_release(void *calldata
)
8455 static const struct rpc_call_ops nfs41_free_stateid_ops
= {
8456 .rpc_call_prepare
= nfs41_free_stateid_prepare
,
8457 .rpc_call_done
= nfs41_free_stateid_done
,
8458 .rpc_release
= nfs41_free_stateid_release
,
8461 static struct rpc_task
*_nfs41_free_stateid(struct nfs_server
*server
,
8462 nfs4_stateid
*stateid
,
8463 struct rpc_cred
*cred
,
8466 struct rpc_message msg
= {
8467 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FREE_STATEID
],
8470 struct rpc_task_setup task_setup
= {
8471 .rpc_client
= server
->client
,
8472 .rpc_message
= &msg
,
8473 .callback_ops
= &nfs41_free_stateid_ops
,
8474 .flags
= RPC_TASK_ASYNC
,
8476 struct nfs_free_stateid_data
*data
;
8478 nfs4_state_protect(server
->nfs_client
, NFS_SP4_MACH_CRED_STATEID
,
8479 &task_setup
.rpc_client
, &msg
);
8481 dprintk("NFS call free_stateid %p\n", stateid
);
8482 data
= kmalloc(sizeof(*data
), GFP_NOFS
);
8484 return ERR_PTR(-ENOMEM
);
8485 data
->server
= server
;
8486 nfs4_stateid_copy(&data
->args
.stateid
, stateid
);
8488 task_setup
.callback_data
= data
;
8490 msg
.rpc_argp
= &data
->args
;
8491 msg
.rpc_resp
= &data
->res
;
8492 nfs4_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 0);
8494 nfs4_set_sequence_privileged(&data
->args
.seq_args
);
8496 return rpc_run_task(&task_setup
);
8500 * nfs41_free_stateid - perform a FREE_STATEID operation
8502 * @server: server / transport on which to perform the operation
8503 * @stateid: state ID to release
8506 * Returns NFS_OK if the server freed "stateid". Otherwise a
8507 * negative NFS4ERR value is returned.
8509 static int nfs41_free_stateid(struct nfs_server
*server
,
8510 nfs4_stateid
*stateid
,
8511 struct rpc_cred
*cred
)
8513 struct rpc_task
*task
;
8516 task
= _nfs41_free_stateid(server
, stateid
, cred
, true);
8518 return PTR_ERR(task
);
8519 ret
= rpc_wait_for_completion_task(task
);
8521 ret
= task
->tk_status
;
8527 nfs41_free_lock_state(struct nfs_server
*server
, struct nfs4_lock_state
*lsp
)
8529 struct rpc_task
*task
;
8530 struct rpc_cred
*cred
= lsp
->ls_state
->owner
->so_cred
;
8532 task
= _nfs41_free_stateid(server
, &lsp
->ls_stateid
, cred
, false);
8533 nfs4_free_lock_state(server
, lsp
);
8539 static bool nfs41_match_stateid(const nfs4_stateid
*s1
,
8540 const nfs4_stateid
*s2
)
8542 if (memcmp(s1
->other
, s2
->other
, sizeof(s1
->other
)) != 0)
8545 if (s1
->seqid
== s2
->seqid
)
8547 if (s1
->seqid
== 0 || s2
->seqid
== 0)
8553 #endif /* CONFIG_NFS_V4_1 */
8555 static bool nfs4_match_stateid(const nfs4_stateid
*s1
,
8556 const nfs4_stateid
*s2
)
8558 return nfs4_stateid_match(s1
, s2
);
8562 static const struct nfs4_state_recovery_ops nfs40_reboot_recovery_ops
= {
8563 .owner_flag_bit
= NFS_OWNER_RECLAIM_REBOOT
,
8564 .state_flag_bit
= NFS_STATE_RECLAIM_REBOOT
,
8565 .recover_open
= nfs4_open_reclaim
,
8566 .recover_lock
= nfs4_lock_reclaim
,
8567 .establish_clid
= nfs4_init_clientid
,
8568 .detect_trunking
= nfs40_discover_server_trunking
,
8571 #if defined(CONFIG_NFS_V4_1)
8572 static const struct nfs4_state_recovery_ops nfs41_reboot_recovery_ops
= {
8573 .owner_flag_bit
= NFS_OWNER_RECLAIM_REBOOT
,
8574 .state_flag_bit
= NFS_STATE_RECLAIM_REBOOT
,
8575 .recover_open
= nfs4_open_reclaim
,
8576 .recover_lock
= nfs4_lock_reclaim
,
8577 .establish_clid
= nfs41_init_clientid
,
8578 .reclaim_complete
= nfs41_proc_reclaim_complete
,
8579 .detect_trunking
= nfs41_discover_server_trunking
,
8581 #endif /* CONFIG_NFS_V4_1 */
8583 static const struct nfs4_state_recovery_ops nfs40_nograce_recovery_ops
= {
8584 .owner_flag_bit
= NFS_OWNER_RECLAIM_NOGRACE
,
8585 .state_flag_bit
= NFS_STATE_RECLAIM_NOGRACE
,
8586 .recover_open
= nfs40_open_expired
,
8587 .recover_lock
= nfs4_lock_expired
,
8588 .establish_clid
= nfs4_init_clientid
,
8591 #if defined(CONFIG_NFS_V4_1)
8592 static const struct nfs4_state_recovery_ops nfs41_nograce_recovery_ops
= {
8593 .owner_flag_bit
= NFS_OWNER_RECLAIM_NOGRACE
,
8594 .state_flag_bit
= NFS_STATE_RECLAIM_NOGRACE
,
8595 .recover_open
= nfs41_open_expired
,
8596 .recover_lock
= nfs41_lock_expired
,
8597 .establish_clid
= nfs41_init_clientid
,
8599 #endif /* CONFIG_NFS_V4_1 */
8601 static const struct nfs4_state_maintenance_ops nfs40_state_renewal_ops
= {
8602 .sched_state_renewal
= nfs4_proc_async_renew
,
8603 .get_state_renewal_cred_locked
= nfs4_get_renew_cred_locked
,
8604 .renew_lease
= nfs4_proc_renew
,
8607 #if defined(CONFIG_NFS_V4_1)
8608 static const struct nfs4_state_maintenance_ops nfs41_state_renewal_ops
= {
8609 .sched_state_renewal
= nfs41_proc_async_sequence
,
8610 .get_state_renewal_cred_locked
= nfs4_get_machine_cred_locked
,
8611 .renew_lease
= nfs4_proc_sequence
,
8615 static const struct nfs4_mig_recovery_ops nfs40_mig_recovery_ops
= {
8616 .get_locations
= _nfs40_proc_get_locations
,
8617 .fsid_present
= _nfs40_proc_fsid_present
,
8620 #if defined(CONFIG_NFS_V4_1)
8621 static const struct nfs4_mig_recovery_ops nfs41_mig_recovery_ops
= {
8622 .get_locations
= _nfs41_proc_get_locations
,
8623 .fsid_present
= _nfs41_proc_fsid_present
,
8625 #endif /* CONFIG_NFS_V4_1 */
8627 static const struct nfs4_minor_version_ops nfs_v4_0_minor_ops
= {
8629 .init_caps
= NFS_CAP_READDIRPLUS
8630 | NFS_CAP_ATOMIC_OPEN
8631 | NFS_CAP_POSIX_LOCK
,
8632 .init_client
= nfs40_init_client
,
8633 .shutdown_client
= nfs40_shutdown_client
,
8634 .match_stateid
= nfs4_match_stateid
,
8635 .find_root_sec
= nfs4_find_root_sec
,
8636 .free_lock_state
= nfs4_release_lockowner
,
8637 .alloc_seqid
= nfs_alloc_seqid
,
8638 .call_sync_ops
= &nfs40_call_sync_ops
,
8639 .reboot_recovery_ops
= &nfs40_reboot_recovery_ops
,
8640 .nograce_recovery_ops
= &nfs40_nograce_recovery_ops
,
8641 .state_renewal_ops
= &nfs40_state_renewal_ops
,
8642 .mig_recovery_ops
= &nfs40_mig_recovery_ops
,
8645 #if defined(CONFIG_NFS_V4_1)
8646 static struct nfs_seqid
*
8647 nfs_alloc_no_seqid(struct nfs_seqid_counter
*arg1
, gfp_t arg2
)
8652 static const struct nfs4_minor_version_ops nfs_v4_1_minor_ops
= {
8654 .init_caps
= NFS_CAP_READDIRPLUS
8655 | NFS_CAP_ATOMIC_OPEN
8656 | NFS_CAP_POSIX_LOCK
8657 | NFS_CAP_STATEID_NFSV41
8658 | NFS_CAP_ATOMIC_OPEN_V1
,
8659 .init_client
= nfs41_init_client
,
8660 .shutdown_client
= nfs41_shutdown_client
,
8661 .match_stateid
= nfs41_match_stateid
,
8662 .find_root_sec
= nfs41_find_root_sec
,
8663 .free_lock_state
= nfs41_free_lock_state
,
8664 .alloc_seqid
= nfs_alloc_no_seqid
,
8665 .call_sync_ops
= &nfs41_call_sync_ops
,
8666 .reboot_recovery_ops
= &nfs41_reboot_recovery_ops
,
8667 .nograce_recovery_ops
= &nfs41_nograce_recovery_ops
,
8668 .state_renewal_ops
= &nfs41_state_renewal_ops
,
8669 .mig_recovery_ops
= &nfs41_mig_recovery_ops
,
8673 #if defined(CONFIG_NFS_V4_2)
8674 static const struct nfs4_minor_version_ops nfs_v4_2_minor_ops
= {
8676 .init_caps
= NFS_CAP_READDIRPLUS
8677 | NFS_CAP_ATOMIC_OPEN
8678 | NFS_CAP_POSIX_LOCK
8679 | NFS_CAP_STATEID_NFSV41
8680 | NFS_CAP_ATOMIC_OPEN_V1
8682 | NFS_CAP_DEALLOCATE
8684 | NFS_CAP_LAYOUTSTATS
,
8685 .init_client
= nfs41_init_client
,
8686 .shutdown_client
= nfs41_shutdown_client
,
8687 .match_stateid
= nfs41_match_stateid
,
8688 .find_root_sec
= nfs41_find_root_sec
,
8689 .free_lock_state
= nfs41_free_lock_state
,
8690 .call_sync_ops
= &nfs41_call_sync_ops
,
8691 .alloc_seqid
= nfs_alloc_no_seqid
,
8692 .reboot_recovery_ops
= &nfs41_reboot_recovery_ops
,
8693 .nograce_recovery_ops
= &nfs41_nograce_recovery_ops
,
8694 .state_renewal_ops
= &nfs41_state_renewal_ops
,
8695 .mig_recovery_ops
= &nfs41_mig_recovery_ops
,
8699 const struct nfs4_minor_version_ops
*nfs_v4_minor_ops
[] = {
8700 [0] = &nfs_v4_0_minor_ops
,
8701 #if defined(CONFIG_NFS_V4_1)
8702 [1] = &nfs_v4_1_minor_ops
,
8704 #if defined(CONFIG_NFS_V4_2)
8705 [2] = &nfs_v4_2_minor_ops
,
8709 static const struct inode_operations nfs4_dir_inode_operations
= {
8710 .create
= nfs_create
,
8711 .lookup
= nfs_lookup
,
8712 .atomic_open
= nfs_atomic_open
,
8714 .unlink
= nfs_unlink
,
8715 .symlink
= nfs_symlink
,
8719 .rename
= nfs_rename
,
8720 .permission
= nfs_permission
,
8721 .getattr
= nfs_getattr
,
8722 .setattr
= nfs_setattr
,
8723 .getxattr
= generic_getxattr
,
8724 .setxattr
= generic_setxattr
,
8725 .listxattr
= generic_listxattr
,
8726 .removexattr
= generic_removexattr
,
8729 static const struct inode_operations nfs4_file_inode_operations
= {
8730 .permission
= nfs_permission
,
8731 .getattr
= nfs_getattr
,
8732 .setattr
= nfs_setattr
,
8733 .getxattr
= generic_getxattr
,
8734 .setxattr
= generic_setxattr
,
8735 .listxattr
= generic_listxattr
,
8736 .removexattr
= generic_removexattr
,
8739 const struct nfs_rpc_ops nfs_v4_clientops
= {
8740 .version
= 4, /* protocol version */
8741 .dentry_ops
= &nfs4_dentry_operations
,
8742 .dir_inode_ops
= &nfs4_dir_inode_operations
,
8743 .file_inode_ops
= &nfs4_file_inode_operations
,
8744 .file_ops
= &nfs4_file_operations
,
8745 .getroot
= nfs4_proc_get_root
,
8746 .submount
= nfs4_submount
,
8747 .try_mount
= nfs4_try_mount
,
8748 .getattr
= nfs4_proc_getattr
,
8749 .setattr
= nfs4_proc_setattr
,
8750 .lookup
= nfs4_proc_lookup
,
8751 .access
= nfs4_proc_access
,
8752 .readlink
= nfs4_proc_readlink
,
8753 .create
= nfs4_proc_create
,
8754 .remove
= nfs4_proc_remove
,
8755 .unlink_setup
= nfs4_proc_unlink_setup
,
8756 .unlink_rpc_prepare
= nfs4_proc_unlink_rpc_prepare
,
8757 .unlink_done
= nfs4_proc_unlink_done
,
8758 .rename_setup
= nfs4_proc_rename_setup
,
8759 .rename_rpc_prepare
= nfs4_proc_rename_rpc_prepare
,
8760 .rename_done
= nfs4_proc_rename_done
,
8761 .link
= nfs4_proc_link
,
8762 .symlink
= nfs4_proc_symlink
,
8763 .mkdir
= nfs4_proc_mkdir
,
8764 .rmdir
= nfs4_proc_remove
,
8765 .readdir
= nfs4_proc_readdir
,
8766 .mknod
= nfs4_proc_mknod
,
8767 .statfs
= nfs4_proc_statfs
,
8768 .fsinfo
= nfs4_proc_fsinfo
,
8769 .pathconf
= nfs4_proc_pathconf
,
8770 .set_capabilities
= nfs4_server_capabilities
,
8771 .decode_dirent
= nfs4_decode_dirent
,
8772 .pgio_rpc_prepare
= nfs4_proc_pgio_rpc_prepare
,
8773 .read_setup
= nfs4_proc_read_setup
,
8774 .read_done
= nfs4_read_done
,
8775 .write_setup
= nfs4_proc_write_setup
,
8776 .write_done
= nfs4_write_done
,
8777 .commit_setup
= nfs4_proc_commit_setup
,
8778 .commit_rpc_prepare
= nfs4_proc_commit_rpc_prepare
,
8779 .commit_done
= nfs4_commit_done
,
8780 .lock
= nfs4_proc_lock
,
8781 .clear_acl_cache
= nfs4_zap_acl_attr
,
8782 .close_context
= nfs4_close_context
,
8783 .open_context
= nfs4_atomic_open
,
8784 .have_delegation
= nfs4_have_delegation
,
8785 .return_delegation
= nfs4_inode_return_delegation
,
8786 .alloc_client
= nfs4_alloc_client
,
8787 .init_client
= nfs4_init_client
,
8788 .free_client
= nfs4_free_client
,
8789 .create_server
= nfs4_create_server
,
8790 .clone_server
= nfs_clone_server
,
8793 static const struct xattr_handler nfs4_xattr_nfs4_acl_handler
= {
8794 .prefix
= XATTR_NAME_NFSV4_ACL
,
8795 .list
= nfs4_xattr_list_nfs4_acl
,
8796 .get
= nfs4_xattr_get_nfs4_acl
,
8797 .set
= nfs4_xattr_set_nfs4_acl
,
8800 const struct xattr_handler
*nfs4_xattr_handlers
[] = {
8801 &nfs4_xattr_nfs4_acl_handler
,
8802 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
8803 &nfs4_xattr_nfs4_label_handler
,