4 * Client-side procedure declarations for NFSv4.
6 * Copyright (c) 2002 The Regents of the University of Michigan.
9 * Kendrick Smith <kmsmith@umich.edu>
10 * Andy Adamson <andros@umich.edu>
12 * Redistribution and use in source and binary forms, with or without
13 * modification, are permitted provided that the following conditions
16 * 1. Redistributions of source code must retain the above copyright
17 * notice, this list of conditions and the following disclaimer.
18 * 2. Redistributions in binary form must reproduce the above copyright
19 * notice, this list of conditions and the following disclaimer in the
20 * documentation and/or other materials provided with the distribution.
21 * 3. Neither the name of the University nor the names of its
22 * contributors may be used to endorse or promote products derived
23 * from this software without specific prior written permission.
25 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
26 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
27 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
28 * DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
29 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
30 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
31 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
32 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
33 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
34 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
35 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
39 #include <linux/delay.h>
40 #include <linux/errno.h>
41 #include <linux/file.h>
42 #include <linux/string.h>
43 #include <linux/ratelimit.h>
44 #include <linux/printk.h>
45 #include <linux/slab.h>
46 #include <linux/sunrpc/clnt.h>
47 #include <linux/nfs.h>
48 #include <linux/nfs4.h>
49 #include <linux/nfs_fs.h>
50 #include <linux/nfs_page.h>
51 #include <linux/nfs_mount.h>
52 #include <linux/namei.h>
53 #include <linux/mount.h>
54 #include <linux/module.h>
55 #include <linux/xattr.h>
56 #include <linux/utsname.h>
57 #include <linux/freezer.h>
60 #include "delegation.h"
66 #include "nfs4idmap.h"
67 #include "nfs4session.h"
70 #include "nfs4trace.h"
72 #define NFSDBG_FACILITY NFSDBG_PROC
74 #define NFS4_POLL_RETRY_MIN (HZ/10)
75 #define NFS4_POLL_RETRY_MAX (15*HZ)
78 static int _nfs4_proc_open(struct nfs4_opendata
*data
);
79 static int _nfs4_recover_proc_open(struct nfs4_opendata
*data
);
80 static int nfs4_do_fsinfo(struct nfs_server
*, struct nfs_fh
*, struct nfs_fsinfo
*);
81 static int nfs4_async_handle_error(struct rpc_task
*, const struct nfs_server
*, struct nfs4_state
*, long *);
82 static void nfs_fixup_referral_attributes(struct nfs_fattr
*fattr
);
83 static int nfs4_proc_getattr(struct nfs_server
*, struct nfs_fh
*, struct nfs_fattr
*, struct nfs4_label
*label
);
84 static int _nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
, struct nfs4_label
*label
);
85 static int nfs4_do_setattr(struct inode
*inode
, struct rpc_cred
*cred
,
86 struct nfs_fattr
*fattr
, struct iattr
*sattr
,
87 struct nfs4_state
*state
, struct nfs4_label
*ilabel
,
88 struct nfs4_label
*olabel
);
89 #ifdef CONFIG_NFS_V4_1
90 static int nfs41_test_stateid(struct nfs_server
*, nfs4_stateid
*,
92 static int nfs41_free_stateid(struct nfs_server
*, nfs4_stateid
*,
96 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
97 static inline struct nfs4_label
*
98 nfs4_label_init_security(struct inode
*dir
, struct dentry
*dentry
,
99 struct iattr
*sattr
, struct nfs4_label
*label
)
106 if (nfs_server_capable(dir
, NFS_CAP_SECURITY_LABEL
) == 0)
109 err
= security_dentry_init_security(dentry
, sattr
->ia_mode
,
110 &dentry
->d_name
, (void **)&label
->label
, &label
->len
);
117 nfs4_label_release_security(struct nfs4_label
*label
)
120 security_release_secctx(label
->label
, label
->len
);
122 static inline u32
*nfs4_bitmask(struct nfs_server
*server
, struct nfs4_label
*label
)
125 return server
->attr_bitmask
;
127 return server
->attr_bitmask_nl
;
130 static inline struct nfs4_label
*
131 nfs4_label_init_security(struct inode
*dir
, struct dentry
*dentry
,
132 struct iattr
*sattr
, struct nfs4_label
*l
)
135 nfs4_label_release_security(struct nfs4_label
*label
)
138 nfs4_bitmask(struct nfs_server
*server
, struct nfs4_label
*label
)
139 { return server
->attr_bitmask
; }
142 /* Prevent leaks of NFSv4 errors into userland */
143 static int nfs4_map_errors(int err
)
148 case -NFS4ERR_RESOURCE
:
149 case -NFS4ERR_LAYOUTTRYLATER
:
150 case -NFS4ERR_RECALLCONFLICT
:
152 case -NFS4ERR_WRONGSEC
:
153 case -NFS4ERR_WRONG_CRED
:
155 case -NFS4ERR_BADOWNER
:
156 case -NFS4ERR_BADNAME
:
158 case -NFS4ERR_SHARE_DENIED
:
160 case -NFS4ERR_MINOR_VERS_MISMATCH
:
161 return -EPROTONOSUPPORT
;
162 case -NFS4ERR_FILE_OPEN
:
165 dprintk("%s could not handle NFSv4 error %d\n",
173 * This is our standard bitmap for GETATTR requests.
175 const u32 nfs4_fattr_bitmap
[3] = {
177 | FATTR4_WORD0_CHANGE
180 | FATTR4_WORD0_FILEID
,
182 | FATTR4_WORD1_NUMLINKS
184 | FATTR4_WORD1_OWNER_GROUP
185 | FATTR4_WORD1_RAWDEV
186 | FATTR4_WORD1_SPACE_USED
187 | FATTR4_WORD1_TIME_ACCESS
188 | FATTR4_WORD1_TIME_METADATA
189 | FATTR4_WORD1_TIME_MODIFY
190 | FATTR4_WORD1_MOUNTED_ON_FILEID
,
191 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
192 FATTR4_WORD2_SECURITY_LABEL
196 static const u32 nfs4_pnfs_open_bitmap
[3] = {
198 | FATTR4_WORD0_CHANGE
201 | FATTR4_WORD0_FILEID
,
203 | FATTR4_WORD1_NUMLINKS
205 | FATTR4_WORD1_OWNER_GROUP
206 | FATTR4_WORD1_RAWDEV
207 | FATTR4_WORD1_SPACE_USED
208 | FATTR4_WORD1_TIME_ACCESS
209 | FATTR4_WORD1_TIME_METADATA
210 | FATTR4_WORD1_TIME_MODIFY
,
211 FATTR4_WORD2_MDSTHRESHOLD
214 static const u32 nfs4_open_noattr_bitmap
[3] = {
216 | FATTR4_WORD0_CHANGE
217 | FATTR4_WORD0_FILEID
,
220 const u32 nfs4_statfs_bitmap
[3] = {
221 FATTR4_WORD0_FILES_AVAIL
222 | FATTR4_WORD0_FILES_FREE
223 | FATTR4_WORD0_FILES_TOTAL
,
224 FATTR4_WORD1_SPACE_AVAIL
225 | FATTR4_WORD1_SPACE_FREE
226 | FATTR4_WORD1_SPACE_TOTAL
229 const u32 nfs4_pathconf_bitmap
[3] = {
231 | FATTR4_WORD0_MAXNAME
,
235 const u32 nfs4_fsinfo_bitmap
[3] = { FATTR4_WORD0_MAXFILESIZE
236 | FATTR4_WORD0_MAXREAD
237 | FATTR4_WORD0_MAXWRITE
238 | FATTR4_WORD0_LEASE_TIME
,
239 FATTR4_WORD1_TIME_DELTA
240 | FATTR4_WORD1_FS_LAYOUT_TYPES
,
241 FATTR4_WORD2_LAYOUT_BLKSIZE
244 const u32 nfs4_fs_locations_bitmap
[3] = {
246 | FATTR4_WORD0_CHANGE
249 | FATTR4_WORD0_FILEID
250 | FATTR4_WORD0_FS_LOCATIONS
,
252 | FATTR4_WORD1_NUMLINKS
254 | FATTR4_WORD1_OWNER_GROUP
255 | FATTR4_WORD1_RAWDEV
256 | FATTR4_WORD1_SPACE_USED
257 | FATTR4_WORD1_TIME_ACCESS
258 | FATTR4_WORD1_TIME_METADATA
259 | FATTR4_WORD1_TIME_MODIFY
260 | FATTR4_WORD1_MOUNTED_ON_FILEID
,
263 static void nfs4_setup_readdir(u64 cookie
, __be32
*verifier
, struct dentry
*dentry
,
264 struct nfs4_readdir_arg
*readdir
)
269 readdir
->cookie
= cookie
;
270 memcpy(&readdir
->verifier
, verifier
, sizeof(readdir
->verifier
));
275 memset(&readdir
->verifier
, 0, sizeof(readdir
->verifier
));
280 * NFSv4 servers do not return entries for '.' and '..'
281 * Therefore, we fake these entries here. We let '.'
282 * have cookie 0 and '..' have cookie 1. Note that
283 * when talking to the server, we always send cookie 0
286 start
= p
= kmap_atomic(*readdir
->pages
);
289 *p
++ = xdr_one
; /* next */
290 *p
++ = xdr_zero
; /* cookie, first word */
291 *p
++ = xdr_one
; /* cookie, second word */
292 *p
++ = xdr_one
; /* entry len */
293 memcpy(p
, ".\0\0\0", 4); /* entry */
295 *p
++ = xdr_one
; /* bitmap length */
296 *p
++ = htonl(FATTR4_WORD0_FILEID
); /* bitmap */
297 *p
++ = htonl(8); /* attribute buffer length */
298 p
= xdr_encode_hyper(p
, NFS_FILEID(d_inode(dentry
)));
301 *p
++ = xdr_one
; /* next */
302 *p
++ = xdr_zero
; /* cookie, first word */
303 *p
++ = xdr_two
; /* cookie, second word */
304 *p
++ = xdr_two
; /* entry len */
305 memcpy(p
, "..\0\0", 4); /* entry */
307 *p
++ = xdr_one
; /* bitmap length */
308 *p
++ = htonl(FATTR4_WORD0_FILEID
); /* bitmap */
309 *p
++ = htonl(8); /* attribute buffer length */
310 p
= xdr_encode_hyper(p
, NFS_FILEID(d_inode(dentry
->d_parent
)));
312 readdir
->pgbase
= (char *)p
- (char *)start
;
313 readdir
->count
-= readdir
->pgbase
;
314 kunmap_atomic(start
);
317 static long nfs4_update_delay(long *timeout
)
321 return NFS4_POLL_RETRY_MAX
;
323 *timeout
= NFS4_POLL_RETRY_MIN
;
324 if (*timeout
> NFS4_POLL_RETRY_MAX
)
325 *timeout
= NFS4_POLL_RETRY_MAX
;
331 static int nfs4_delay(struct rpc_clnt
*clnt
, long *timeout
)
337 freezable_schedule_timeout_killable_unsafe(
338 nfs4_update_delay(timeout
));
339 if (fatal_signal_pending(current
))
344 /* This is the error handling routine for processes that are allowed
347 int nfs4_handle_exception(struct nfs_server
*server
, int errorcode
, struct nfs4_exception
*exception
)
349 struct nfs_client
*clp
= server
->nfs_client
;
350 struct nfs4_state
*state
= exception
->state
;
351 struct inode
*inode
= exception
->inode
;
354 exception
->retry
= 0;
358 case -NFS4ERR_OPENMODE
:
359 case -NFS4ERR_DELEG_REVOKED
:
360 case -NFS4ERR_ADMIN_REVOKED
:
361 case -NFS4ERR_BAD_STATEID
:
362 if (inode
&& nfs4_have_delegation(inode
, FMODE_READ
)) {
363 nfs4_inode_return_delegation(inode
);
364 exception
->retry
= 1;
369 ret
= nfs4_schedule_stateid_recovery(server
, state
);
372 goto wait_on_recovery
;
373 case -NFS4ERR_EXPIRED
:
375 ret
= nfs4_schedule_stateid_recovery(server
, state
);
379 case -NFS4ERR_STALE_STATEID
:
380 case -NFS4ERR_STALE_CLIENTID
:
381 nfs4_schedule_lease_recovery(clp
);
382 goto wait_on_recovery
;
384 ret
= nfs4_schedule_migration_recovery(server
);
387 goto wait_on_recovery
;
388 case -NFS4ERR_LEASE_MOVED
:
389 nfs4_schedule_lease_moved_recovery(clp
);
390 goto wait_on_recovery
;
391 #if defined(CONFIG_NFS_V4_1)
392 case -NFS4ERR_BADSESSION
:
393 case -NFS4ERR_BADSLOT
:
394 case -NFS4ERR_BAD_HIGH_SLOT
:
395 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
396 case -NFS4ERR_DEADSESSION
:
397 case -NFS4ERR_SEQ_FALSE_RETRY
:
398 case -NFS4ERR_SEQ_MISORDERED
:
399 dprintk("%s ERROR: %d Reset session\n", __func__
,
401 nfs4_schedule_session_recovery(clp
->cl_session
, errorcode
);
402 goto wait_on_recovery
;
403 #endif /* defined(CONFIG_NFS_V4_1) */
404 case -NFS4ERR_FILE_OPEN
:
405 if (exception
->timeout
> HZ
) {
406 /* We have retried a decent amount, time to
414 ret
= nfs4_delay(server
->client
, &exception
->timeout
);
417 case -NFS4ERR_RETRY_UNCACHED_REP
:
418 case -NFS4ERR_OLD_STATEID
:
419 exception
->retry
= 1;
421 case -NFS4ERR_BADOWNER
:
422 /* The following works around a Linux server bug! */
423 case -NFS4ERR_BADNAME
:
424 if (server
->caps
& NFS_CAP_UIDGID_NOMAP
) {
425 server
->caps
&= ~NFS_CAP_UIDGID_NOMAP
;
426 exception
->retry
= 1;
427 printk(KERN_WARNING
"NFS: v4 server %s "
428 "does not accept raw "
430 "Reenabling the idmapper.\n",
431 server
->nfs_client
->cl_hostname
);
434 /* We failed to handle the error */
435 return nfs4_map_errors(ret
);
437 ret
= nfs4_wait_clnt_recover(clp
);
438 if (test_bit(NFS_MIG_FAILED
, &server
->mig_status
))
441 exception
->retry
= 1;
446 * Return 'true' if 'clp' is using an rpc_client that is integrity protected
447 * or 'false' otherwise.
449 static bool _nfs4_is_integrity_protected(struct nfs_client
*clp
)
451 rpc_authflavor_t flavor
= clp
->cl_rpcclient
->cl_auth
->au_flavor
;
453 if (flavor
== RPC_AUTH_GSS_KRB5I
||
454 flavor
== RPC_AUTH_GSS_KRB5P
)
460 static void do_renew_lease(struct nfs_client
*clp
, unsigned long timestamp
)
462 spin_lock(&clp
->cl_lock
);
463 if (time_before(clp
->cl_last_renewal
,timestamp
))
464 clp
->cl_last_renewal
= timestamp
;
465 spin_unlock(&clp
->cl_lock
);
468 static void renew_lease(const struct nfs_server
*server
, unsigned long timestamp
)
470 struct nfs_client
*clp
= server
->nfs_client
;
472 if (!nfs4_has_session(clp
))
473 do_renew_lease(clp
, timestamp
);
476 struct nfs4_call_sync_data
{
477 const struct nfs_server
*seq_server
;
478 struct nfs4_sequence_args
*seq_args
;
479 struct nfs4_sequence_res
*seq_res
;
482 void nfs4_init_sequence(struct nfs4_sequence_args
*args
,
483 struct nfs4_sequence_res
*res
, int cache_reply
)
485 args
->sa_slot
= NULL
;
486 args
->sa_cache_this
= cache_reply
;
487 args
->sa_privileged
= 0;
492 static void nfs4_set_sequence_privileged(struct nfs4_sequence_args
*args
)
494 args
->sa_privileged
= 1;
497 int nfs40_setup_sequence(struct nfs4_slot_table
*tbl
,
498 struct nfs4_sequence_args
*args
,
499 struct nfs4_sequence_res
*res
,
500 struct rpc_task
*task
)
502 struct nfs4_slot
*slot
;
504 /* slot already allocated? */
505 if (res
->sr_slot
!= NULL
)
508 spin_lock(&tbl
->slot_tbl_lock
);
509 if (nfs4_slot_tbl_draining(tbl
) && !args
->sa_privileged
)
512 slot
= nfs4_alloc_slot(tbl
);
514 if (slot
== ERR_PTR(-ENOMEM
))
515 task
->tk_timeout
= HZ
>> 2;
518 spin_unlock(&tbl
->slot_tbl_lock
);
520 args
->sa_slot
= slot
;
524 rpc_call_start(task
);
528 if (args
->sa_privileged
)
529 rpc_sleep_on_priority(&tbl
->slot_tbl_waitq
, task
,
530 NULL
, RPC_PRIORITY_PRIVILEGED
);
532 rpc_sleep_on(&tbl
->slot_tbl_waitq
, task
, NULL
);
533 spin_unlock(&tbl
->slot_tbl_lock
);
536 EXPORT_SYMBOL_GPL(nfs40_setup_sequence
);
538 static int nfs40_sequence_done(struct rpc_task
*task
,
539 struct nfs4_sequence_res
*res
)
541 struct nfs4_slot
*slot
= res
->sr_slot
;
542 struct nfs4_slot_table
*tbl
;
548 spin_lock(&tbl
->slot_tbl_lock
);
549 if (!nfs41_wake_and_assign_slot(tbl
, slot
))
550 nfs4_free_slot(tbl
, slot
);
551 spin_unlock(&tbl
->slot_tbl_lock
);
558 #if defined(CONFIG_NFS_V4_1)
560 static void nfs41_sequence_free_slot(struct nfs4_sequence_res
*res
)
562 struct nfs4_session
*session
;
563 struct nfs4_slot_table
*tbl
;
564 struct nfs4_slot
*slot
= res
->sr_slot
;
565 bool send_new_highest_used_slotid
= false;
568 session
= tbl
->session
;
570 spin_lock(&tbl
->slot_tbl_lock
);
571 /* Be nice to the server: try to ensure that the last transmitted
572 * value for highest_user_slotid <= target_highest_slotid
574 if (tbl
->highest_used_slotid
> tbl
->target_highest_slotid
)
575 send_new_highest_used_slotid
= true;
577 if (nfs41_wake_and_assign_slot(tbl
, slot
)) {
578 send_new_highest_used_slotid
= false;
581 nfs4_free_slot(tbl
, slot
);
583 if (tbl
->highest_used_slotid
!= NFS4_NO_SLOT
)
584 send_new_highest_used_slotid
= false;
586 spin_unlock(&tbl
->slot_tbl_lock
);
588 if (send_new_highest_used_slotid
)
589 nfs41_notify_server(session
->clp
);
592 int nfs41_sequence_done(struct rpc_task
*task
, struct nfs4_sequence_res
*res
)
594 struct nfs4_session
*session
;
595 struct nfs4_slot
*slot
= res
->sr_slot
;
596 struct nfs_client
*clp
;
597 bool interrupted
= false;
602 /* don't increment the sequence number if the task wasn't sent */
603 if (!RPC_WAS_SENT(task
))
606 session
= slot
->table
->session
;
608 if (slot
->interrupted
) {
609 slot
->interrupted
= 0;
613 trace_nfs4_sequence_done(session
, res
);
614 /* Check the SEQUENCE operation status */
615 switch (res
->sr_status
) {
617 /* Update the slot's sequence and clientid lease timer */
620 do_renew_lease(clp
, res
->sr_timestamp
);
621 /* Check sequence flags */
622 nfs41_handle_sequence_flag_errors(clp
, res
->sr_status_flags
);
623 nfs41_update_target_slotid(slot
->table
, slot
, res
);
627 * sr_status remains 1 if an RPC level error occurred.
628 * The server may or may not have processed the sequence
630 * Mark the slot as having hosted an interrupted RPC call.
632 slot
->interrupted
= 1;
635 /* The server detected a resend of the RPC call and
636 * returned NFS4ERR_DELAY as per Section 2.10.6.2
639 dprintk("%s: slot=%u seq=%u: Operation in progress\n",
644 case -NFS4ERR_BADSLOT
:
646 * The slot id we used was probably retired. Try again
647 * using a different slot id.
650 case -NFS4ERR_SEQ_MISORDERED
:
652 * Was the last operation on this sequence interrupted?
653 * If so, retry after bumping the sequence number.
660 * Could this slot have been previously retired?
661 * If so, then the server may be expecting seq_nr = 1!
663 if (slot
->seq_nr
!= 1) {
668 case -NFS4ERR_SEQ_FALSE_RETRY
:
672 /* Just update the slot sequence no. */
676 /* The session may be reset by one of the error handlers. */
677 dprintk("%s: Error %d free the slot \n", __func__
, res
->sr_status
);
678 nfs41_sequence_free_slot(res
);
682 if (rpc_restart_call_prepare(task
)) {
688 if (!rpc_restart_call(task
))
690 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
693 EXPORT_SYMBOL_GPL(nfs41_sequence_done
);
695 int nfs4_sequence_done(struct rpc_task
*task
, struct nfs4_sequence_res
*res
)
697 if (res
->sr_slot
== NULL
)
699 if (!res
->sr_slot
->table
->session
)
700 return nfs40_sequence_done(task
, res
);
701 return nfs41_sequence_done(task
, res
);
703 EXPORT_SYMBOL_GPL(nfs4_sequence_done
);
705 int nfs41_setup_sequence(struct nfs4_session
*session
,
706 struct nfs4_sequence_args
*args
,
707 struct nfs4_sequence_res
*res
,
708 struct rpc_task
*task
)
710 struct nfs4_slot
*slot
;
711 struct nfs4_slot_table
*tbl
;
713 dprintk("--> %s\n", __func__
);
714 /* slot already allocated? */
715 if (res
->sr_slot
!= NULL
)
718 tbl
= &session
->fc_slot_table
;
720 task
->tk_timeout
= 0;
722 spin_lock(&tbl
->slot_tbl_lock
);
723 if (test_bit(NFS4_SLOT_TBL_DRAINING
, &tbl
->slot_tbl_state
) &&
724 !args
->sa_privileged
) {
725 /* The state manager will wait until the slot table is empty */
726 dprintk("%s session is draining\n", __func__
);
730 slot
= nfs4_alloc_slot(tbl
);
732 /* If out of memory, try again in 1/4 second */
733 if (slot
== ERR_PTR(-ENOMEM
))
734 task
->tk_timeout
= HZ
>> 2;
735 dprintk("<-- %s: no free slots\n", __func__
);
738 spin_unlock(&tbl
->slot_tbl_lock
);
740 args
->sa_slot
= slot
;
742 dprintk("<-- %s slotid=%u seqid=%u\n", __func__
,
743 slot
->slot_nr
, slot
->seq_nr
);
746 res
->sr_timestamp
= jiffies
;
747 res
->sr_status_flags
= 0;
749 * sr_status is only set in decode_sequence, and so will remain
750 * set to 1 if an rpc level failure occurs.
753 trace_nfs4_setup_sequence(session
, args
);
755 rpc_call_start(task
);
758 /* Privileged tasks are queued with top priority */
759 if (args
->sa_privileged
)
760 rpc_sleep_on_priority(&tbl
->slot_tbl_waitq
, task
,
761 NULL
, RPC_PRIORITY_PRIVILEGED
);
763 rpc_sleep_on(&tbl
->slot_tbl_waitq
, task
, NULL
);
764 spin_unlock(&tbl
->slot_tbl_lock
);
767 EXPORT_SYMBOL_GPL(nfs41_setup_sequence
);
769 static int nfs4_setup_sequence(const struct nfs_server
*server
,
770 struct nfs4_sequence_args
*args
,
771 struct nfs4_sequence_res
*res
,
772 struct rpc_task
*task
)
774 struct nfs4_session
*session
= nfs4_get_session(server
);
778 return nfs40_setup_sequence(server
->nfs_client
->cl_slot_tbl
,
781 dprintk("--> %s clp %p session %p sr_slot %u\n",
782 __func__
, session
->clp
, session
, res
->sr_slot
?
783 res
->sr_slot
->slot_nr
: NFS4_NO_SLOT
);
785 ret
= nfs41_setup_sequence(session
, args
, res
, task
);
787 dprintk("<-- %s status=%d\n", __func__
, ret
);
791 static void nfs41_call_sync_prepare(struct rpc_task
*task
, void *calldata
)
793 struct nfs4_call_sync_data
*data
= calldata
;
794 struct nfs4_session
*session
= nfs4_get_session(data
->seq_server
);
796 dprintk("--> %s data->seq_server %p\n", __func__
, data
->seq_server
);
798 nfs41_setup_sequence(session
, data
->seq_args
, data
->seq_res
, task
);
801 static void nfs41_call_sync_done(struct rpc_task
*task
, void *calldata
)
803 struct nfs4_call_sync_data
*data
= calldata
;
805 nfs41_sequence_done(task
, data
->seq_res
);
808 static const struct rpc_call_ops nfs41_call_sync_ops
= {
809 .rpc_call_prepare
= nfs41_call_sync_prepare
,
810 .rpc_call_done
= nfs41_call_sync_done
,
813 #else /* !CONFIG_NFS_V4_1 */
815 static int nfs4_setup_sequence(const struct nfs_server
*server
,
816 struct nfs4_sequence_args
*args
,
817 struct nfs4_sequence_res
*res
,
818 struct rpc_task
*task
)
820 return nfs40_setup_sequence(server
->nfs_client
->cl_slot_tbl
,
824 int nfs4_sequence_done(struct rpc_task
*task
,
825 struct nfs4_sequence_res
*res
)
827 return nfs40_sequence_done(task
, res
);
829 EXPORT_SYMBOL_GPL(nfs4_sequence_done
);
831 #endif /* !CONFIG_NFS_V4_1 */
833 static void nfs40_call_sync_prepare(struct rpc_task
*task
, void *calldata
)
835 struct nfs4_call_sync_data
*data
= calldata
;
836 nfs4_setup_sequence(data
->seq_server
,
837 data
->seq_args
, data
->seq_res
, task
);
840 static void nfs40_call_sync_done(struct rpc_task
*task
, void *calldata
)
842 struct nfs4_call_sync_data
*data
= calldata
;
843 nfs4_sequence_done(task
, data
->seq_res
);
846 static const struct rpc_call_ops nfs40_call_sync_ops
= {
847 .rpc_call_prepare
= nfs40_call_sync_prepare
,
848 .rpc_call_done
= nfs40_call_sync_done
,
851 static int nfs4_call_sync_sequence(struct rpc_clnt
*clnt
,
852 struct nfs_server
*server
,
853 struct rpc_message
*msg
,
854 struct nfs4_sequence_args
*args
,
855 struct nfs4_sequence_res
*res
)
858 struct rpc_task
*task
;
859 struct nfs_client
*clp
= server
->nfs_client
;
860 struct nfs4_call_sync_data data
= {
861 .seq_server
= server
,
865 struct rpc_task_setup task_setup
= {
868 .callback_ops
= clp
->cl_mvops
->call_sync_ops
,
869 .callback_data
= &data
872 task
= rpc_run_task(&task_setup
);
876 ret
= task
->tk_status
;
882 int nfs4_call_sync(struct rpc_clnt
*clnt
,
883 struct nfs_server
*server
,
884 struct rpc_message
*msg
,
885 struct nfs4_sequence_args
*args
,
886 struct nfs4_sequence_res
*res
,
889 nfs4_init_sequence(args
, res
, cache_reply
);
890 return nfs4_call_sync_sequence(clnt
, server
, msg
, args
, res
);
893 static void update_changeattr(struct inode
*dir
, struct nfs4_change_info
*cinfo
)
895 struct nfs_inode
*nfsi
= NFS_I(dir
);
897 spin_lock(&dir
->i_lock
);
898 nfsi
->cache_validity
|= NFS_INO_INVALID_ATTR
|NFS_INO_INVALID_DATA
;
899 if (!cinfo
->atomic
|| cinfo
->before
!= dir
->i_version
)
900 nfs_force_lookup_revalidate(dir
);
901 dir
->i_version
= cinfo
->after
;
902 nfsi
->attr_gencount
= nfs_inc_attr_generation_counter();
903 nfs_fscache_invalidate(dir
);
904 spin_unlock(&dir
->i_lock
);
907 struct nfs4_opendata
{
909 struct nfs_openargs o_arg
;
910 struct nfs_openres o_res
;
911 struct nfs_open_confirmargs c_arg
;
912 struct nfs_open_confirmres c_res
;
913 struct nfs4_string owner_name
;
914 struct nfs4_string group_name
;
915 struct nfs4_label
*a_label
;
916 struct nfs_fattr f_attr
;
917 struct nfs4_label
*f_label
;
919 struct dentry
*dentry
;
920 struct nfs4_state_owner
*owner
;
921 struct nfs4_state
*state
;
923 unsigned long timestamp
;
924 unsigned int rpc_done
: 1;
925 unsigned int file_created
: 1;
926 unsigned int is_recover
: 1;
931 static bool nfs4_clear_cap_atomic_open_v1(struct nfs_server
*server
,
932 int err
, struct nfs4_exception
*exception
)
936 if (!(server
->caps
& NFS_CAP_ATOMIC_OPEN_V1
))
938 server
->caps
&= ~NFS_CAP_ATOMIC_OPEN_V1
;
939 exception
->retry
= 1;
944 nfs4_map_atomic_open_share(struct nfs_server
*server
,
945 fmode_t fmode
, int openflags
)
949 switch (fmode
& (FMODE_READ
| FMODE_WRITE
)) {
951 res
= NFS4_SHARE_ACCESS_READ
;
954 res
= NFS4_SHARE_ACCESS_WRITE
;
956 case FMODE_READ
|FMODE_WRITE
:
957 res
= NFS4_SHARE_ACCESS_BOTH
;
959 if (!(server
->caps
& NFS_CAP_ATOMIC_OPEN_V1
))
961 /* Want no delegation if we're using O_DIRECT */
962 if (openflags
& O_DIRECT
)
963 res
|= NFS4_SHARE_WANT_NO_DELEG
;
968 static enum open_claim_type4
969 nfs4_map_atomic_open_claim(struct nfs_server
*server
,
970 enum open_claim_type4 claim
)
972 if (server
->caps
& NFS_CAP_ATOMIC_OPEN_V1
)
977 case NFS4_OPEN_CLAIM_FH
:
978 return NFS4_OPEN_CLAIM_NULL
;
979 case NFS4_OPEN_CLAIM_DELEG_CUR_FH
:
980 return NFS4_OPEN_CLAIM_DELEGATE_CUR
;
981 case NFS4_OPEN_CLAIM_DELEG_PREV_FH
:
982 return NFS4_OPEN_CLAIM_DELEGATE_PREV
;
986 static void nfs4_init_opendata_res(struct nfs4_opendata
*p
)
988 p
->o_res
.f_attr
= &p
->f_attr
;
989 p
->o_res
.f_label
= p
->f_label
;
990 p
->o_res
.seqid
= p
->o_arg
.seqid
;
991 p
->c_res
.seqid
= p
->c_arg
.seqid
;
992 p
->o_res
.server
= p
->o_arg
.server
;
993 p
->o_res
.access_request
= p
->o_arg
.access
;
994 nfs_fattr_init(&p
->f_attr
);
995 nfs_fattr_init_names(&p
->f_attr
, &p
->owner_name
, &p
->group_name
);
998 static struct nfs4_opendata
*nfs4_opendata_alloc(struct dentry
*dentry
,
999 struct nfs4_state_owner
*sp
, fmode_t fmode
, int flags
,
1000 const struct iattr
*attrs
,
1001 struct nfs4_label
*label
,
1002 enum open_claim_type4 claim
,
1005 struct dentry
*parent
= dget_parent(dentry
);
1006 struct inode
*dir
= d_inode(parent
);
1007 struct nfs_server
*server
= NFS_SERVER(dir
);
1008 struct nfs_seqid
*(*alloc_seqid
)(struct nfs_seqid_counter
*, gfp_t
);
1009 struct nfs4_opendata
*p
;
1011 p
= kzalloc(sizeof(*p
), gfp_mask
);
1015 p
->f_label
= nfs4_label_alloc(server
, gfp_mask
);
1016 if (IS_ERR(p
->f_label
))
1019 p
->a_label
= nfs4_label_alloc(server
, gfp_mask
);
1020 if (IS_ERR(p
->a_label
))
1023 alloc_seqid
= server
->nfs_client
->cl_mvops
->alloc_seqid
;
1024 p
->o_arg
.seqid
= alloc_seqid(&sp
->so_seqid
, gfp_mask
);
1025 if (IS_ERR(p
->o_arg
.seqid
))
1026 goto err_free_label
;
1027 nfs_sb_active(dentry
->d_sb
);
1028 p
->dentry
= dget(dentry
);
1031 atomic_inc(&sp
->so_count
);
1032 p
->o_arg
.open_flags
= flags
;
1033 p
->o_arg
.fmode
= fmode
& (FMODE_READ
|FMODE_WRITE
);
1034 p
->o_arg
.share_access
= nfs4_map_atomic_open_share(server
,
1036 /* don't put an ACCESS op in OPEN compound if O_EXCL, because ACCESS
1037 * will return permission denied for all bits until close */
1038 if (!(flags
& O_EXCL
)) {
1039 /* ask server to check for all possible rights as results
1041 p
->o_arg
.access
= NFS4_ACCESS_READ
| NFS4_ACCESS_MODIFY
|
1042 NFS4_ACCESS_EXTEND
| NFS4_ACCESS_EXECUTE
;
1044 p
->o_arg
.clientid
= server
->nfs_client
->cl_clientid
;
1045 p
->o_arg
.id
.create_time
= ktime_to_ns(sp
->so_seqid
.create_time
);
1046 p
->o_arg
.id
.uniquifier
= sp
->so_seqid
.owner_id
;
1047 p
->o_arg
.name
= &dentry
->d_name
;
1048 p
->o_arg
.server
= server
;
1049 p
->o_arg
.bitmask
= nfs4_bitmask(server
, label
);
1050 p
->o_arg
.open_bitmap
= &nfs4_fattr_bitmap
[0];
1051 p
->o_arg
.label
= nfs4_label_copy(p
->a_label
, label
);
1052 p
->o_arg
.claim
= nfs4_map_atomic_open_claim(server
, claim
);
1053 switch (p
->o_arg
.claim
) {
1054 case NFS4_OPEN_CLAIM_NULL
:
1055 case NFS4_OPEN_CLAIM_DELEGATE_CUR
:
1056 case NFS4_OPEN_CLAIM_DELEGATE_PREV
:
1057 p
->o_arg
.fh
= NFS_FH(dir
);
1059 case NFS4_OPEN_CLAIM_PREVIOUS
:
1060 case NFS4_OPEN_CLAIM_FH
:
1061 case NFS4_OPEN_CLAIM_DELEG_CUR_FH
:
1062 case NFS4_OPEN_CLAIM_DELEG_PREV_FH
:
1063 p
->o_arg
.fh
= NFS_FH(d_inode(dentry
));
1065 if (attrs
!= NULL
&& attrs
->ia_valid
!= 0) {
1068 p
->o_arg
.u
.attrs
= &p
->attrs
;
1069 memcpy(&p
->attrs
, attrs
, sizeof(p
->attrs
));
1072 verf
[1] = current
->pid
;
1073 memcpy(p
->o_arg
.u
.verifier
.data
, verf
,
1074 sizeof(p
->o_arg
.u
.verifier
.data
));
1076 p
->c_arg
.fh
= &p
->o_res
.fh
;
1077 p
->c_arg
.stateid
= &p
->o_res
.stateid
;
1078 p
->c_arg
.seqid
= p
->o_arg
.seqid
;
1079 nfs4_init_opendata_res(p
);
1080 kref_init(&p
->kref
);
1084 nfs4_label_free(p
->a_label
);
1086 nfs4_label_free(p
->f_label
);
1094 static void nfs4_opendata_free(struct kref
*kref
)
1096 struct nfs4_opendata
*p
= container_of(kref
,
1097 struct nfs4_opendata
, kref
);
1098 struct super_block
*sb
= p
->dentry
->d_sb
;
1100 nfs_free_seqid(p
->o_arg
.seqid
);
1101 if (p
->state
!= NULL
)
1102 nfs4_put_open_state(p
->state
);
1103 nfs4_put_state_owner(p
->owner
);
1105 nfs4_label_free(p
->a_label
);
1106 nfs4_label_free(p
->f_label
);
1110 nfs_sb_deactive(sb
);
1111 nfs_fattr_free_names(&p
->f_attr
);
1112 kfree(p
->f_attr
.mdsthreshold
);
1116 static void nfs4_opendata_put(struct nfs4_opendata
*p
)
1119 kref_put(&p
->kref
, nfs4_opendata_free
);
1122 static int nfs4_wait_for_completion_rpc_task(struct rpc_task
*task
)
1126 ret
= rpc_wait_for_completion_task(task
);
1130 static int can_open_cached(struct nfs4_state
*state
, fmode_t mode
, int open_mode
)
1134 if (open_mode
& (O_EXCL
|O_TRUNC
))
1136 switch (mode
& (FMODE_READ
|FMODE_WRITE
)) {
1138 ret
|= test_bit(NFS_O_RDONLY_STATE
, &state
->flags
) != 0
1139 && state
->n_rdonly
!= 0;
1142 ret
|= test_bit(NFS_O_WRONLY_STATE
, &state
->flags
) != 0
1143 && state
->n_wronly
!= 0;
1145 case FMODE_READ
|FMODE_WRITE
:
1146 ret
|= test_bit(NFS_O_RDWR_STATE
, &state
->flags
) != 0
1147 && state
->n_rdwr
!= 0;
1153 static int can_open_delegated(struct nfs_delegation
*delegation
, fmode_t fmode
,
1154 enum open_claim_type4 claim
)
1156 if (delegation
== NULL
)
1158 if ((delegation
->type
& fmode
) != fmode
)
1160 if (test_bit(NFS_DELEGATION_RETURNING
, &delegation
->flags
))
1163 case NFS4_OPEN_CLAIM_NULL
:
1164 case NFS4_OPEN_CLAIM_FH
:
1166 case NFS4_OPEN_CLAIM_PREVIOUS
:
1167 if (!test_bit(NFS_DELEGATION_NEED_RECLAIM
, &delegation
->flags
))
1172 nfs_mark_delegation_referenced(delegation
);
1176 static void update_open_stateflags(struct nfs4_state
*state
, fmode_t fmode
)
1185 case FMODE_READ
|FMODE_WRITE
:
1188 nfs4_state_set_mode_locked(state
, state
->state
| fmode
);
1191 static void nfs_test_and_clear_all_open_stateid(struct nfs4_state
*state
)
1193 struct nfs_client
*clp
= state
->owner
->so_server
->nfs_client
;
1194 bool need_recover
= false;
1196 if (test_and_clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
) && state
->n_rdonly
)
1197 need_recover
= true;
1198 if (test_and_clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
) && state
->n_wronly
)
1199 need_recover
= true;
1200 if (test_and_clear_bit(NFS_O_RDWR_STATE
, &state
->flags
) && state
->n_rdwr
)
1201 need_recover
= true;
1203 nfs4_state_mark_reclaim_nograce(clp
, state
);
1206 static bool nfs_need_update_open_stateid(struct nfs4_state
*state
,
1207 nfs4_stateid
*stateid
)
1209 if (test_and_set_bit(NFS_OPEN_STATE
, &state
->flags
) == 0)
1211 if (!nfs4_stateid_match_other(stateid
, &state
->open_stateid
)) {
1212 nfs_test_and_clear_all_open_stateid(state
);
1215 if (nfs4_stateid_is_newer(stateid
, &state
->open_stateid
))
1220 static void nfs_resync_open_stateid_locked(struct nfs4_state
*state
)
1222 if (!(state
->n_wronly
|| state
->n_rdonly
|| state
->n_rdwr
))
1224 if (state
->n_wronly
)
1225 set_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1226 if (state
->n_rdonly
)
1227 set_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1229 set_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1230 set_bit(NFS_OPEN_STATE
, &state
->flags
);
1233 static void nfs_clear_open_stateid_locked(struct nfs4_state
*state
,
1234 nfs4_stateid
*stateid
, fmode_t fmode
)
1236 clear_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1237 switch (fmode
& (FMODE_READ
|FMODE_WRITE
)) {
1239 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1242 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1245 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1246 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1247 clear_bit(NFS_OPEN_STATE
, &state
->flags
);
1249 if (stateid
== NULL
)
1251 /* Handle races with OPEN */
1252 if (!nfs4_stateid_match_other(stateid
, &state
->open_stateid
) ||
1253 !nfs4_stateid_is_newer(stateid
, &state
->open_stateid
)) {
1254 nfs_resync_open_stateid_locked(state
);
1257 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0)
1258 nfs4_stateid_copy(&state
->stateid
, stateid
);
1259 nfs4_stateid_copy(&state
->open_stateid
, stateid
);
1262 static void nfs_clear_open_stateid(struct nfs4_state
*state
, nfs4_stateid
*stateid
, fmode_t fmode
)
1264 write_seqlock(&state
->seqlock
);
1265 nfs_clear_open_stateid_locked(state
, stateid
, fmode
);
1266 write_sequnlock(&state
->seqlock
);
1267 if (test_bit(NFS_STATE_RECLAIM_NOGRACE
, &state
->flags
))
1268 nfs4_schedule_state_manager(state
->owner
->so_server
->nfs_client
);
1271 static void nfs_set_open_stateid_locked(struct nfs4_state
*state
, nfs4_stateid
*stateid
, fmode_t fmode
)
1275 set_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1278 set_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1280 case FMODE_READ
|FMODE_WRITE
:
1281 set_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1283 if (!nfs_need_update_open_stateid(state
, stateid
))
1285 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0)
1286 nfs4_stateid_copy(&state
->stateid
, stateid
);
1287 nfs4_stateid_copy(&state
->open_stateid
, stateid
);
1290 static void __update_open_stateid(struct nfs4_state
*state
, nfs4_stateid
*open_stateid
, const nfs4_stateid
*deleg_stateid
, fmode_t fmode
)
1293 * Protect the call to nfs4_state_set_mode_locked and
1294 * serialise the stateid update
1296 write_seqlock(&state
->seqlock
);
1297 if (deleg_stateid
!= NULL
) {
1298 nfs4_stateid_copy(&state
->stateid
, deleg_stateid
);
1299 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1301 if (open_stateid
!= NULL
)
1302 nfs_set_open_stateid_locked(state
, open_stateid
, fmode
);
1303 write_sequnlock(&state
->seqlock
);
1304 spin_lock(&state
->owner
->so_lock
);
1305 update_open_stateflags(state
, fmode
);
1306 spin_unlock(&state
->owner
->so_lock
);
1309 static int update_open_stateid(struct nfs4_state
*state
, nfs4_stateid
*open_stateid
, nfs4_stateid
*delegation
, fmode_t fmode
)
1311 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
1312 struct nfs_delegation
*deleg_cur
;
1315 fmode
&= (FMODE_READ
|FMODE_WRITE
);
1318 deleg_cur
= rcu_dereference(nfsi
->delegation
);
1319 if (deleg_cur
== NULL
)
1322 spin_lock(&deleg_cur
->lock
);
1323 if (rcu_dereference(nfsi
->delegation
) != deleg_cur
||
1324 test_bit(NFS_DELEGATION_RETURNING
, &deleg_cur
->flags
) ||
1325 (deleg_cur
->type
& fmode
) != fmode
)
1326 goto no_delegation_unlock
;
1328 if (delegation
== NULL
)
1329 delegation
= &deleg_cur
->stateid
;
1330 else if (!nfs4_stateid_match(&deleg_cur
->stateid
, delegation
))
1331 goto no_delegation_unlock
;
1333 nfs_mark_delegation_referenced(deleg_cur
);
1334 __update_open_stateid(state
, open_stateid
, &deleg_cur
->stateid
, fmode
);
1336 no_delegation_unlock
:
1337 spin_unlock(&deleg_cur
->lock
);
1341 if (!ret
&& open_stateid
!= NULL
) {
1342 __update_open_stateid(state
, open_stateid
, NULL
, fmode
);
1345 if (test_bit(NFS_STATE_RECLAIM_NOGRACE
, &state
->flags
))
1346 nfs4_schedule_state_manager(state
->owner
->so_server
->nfs_client
);
1351 static bool nfs4_update_lock_stateid(struct nfs4_lock_state
*lsp
,
1352 const nfs4_stateid
*stateid
)
1354 struct nfs4_state
*state
= lsp
->ls_state
;
1357 spin_lock(&state
->state_lock
);
1358 if (!nfs4_stateid_match_other(stateid
, &lsp
->ls_stateid
))
1360 if (!nfs4_stateid_is_newer(stateid
, &lsp
->ls_stateid
))
1362 nfs4_stateid_copy(&lsp
->ls_stateid
, stateid
);
1365 spin_unlock(&state
->state_lock
);
1369 static void nfs4_return_incompatible_delegation(struct inode
*inode
, fmode_t fmode
)
1371 struct nfs_delegation
*delegation
;
1374 delegation
= rcu_dereference(NFS_I(inode
)->delegation
);
1375 if (delegation
== NULL
|| (delegation
->type
& fmode
) == fmode
) {
1380 nfs4_inode_return_delegation(inode
);
1383 static struct nfs4_state
*nfs4_try_open_cached(struct nfs4_opendata
*opendata
)
1385 struct nfs4_state
*state
= opendata
->state
;
1386 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
1387 struct nfs_delegation
*delegation
;
1388 int open_mode
= opendata
->o_arg
.open_flags
;
1389 fmode_t fmode
= opendata
->o_arg
.fmode
;
1390 enum open_claim_type4 claim
= opendata
->o_arg
.claim
;
1391 nfs4_stateid stateid
;
1395 spin_lock(&state
->owner
->so_lock
);
1396 if (can_open_cached(state
, fmode
, open_mode
)) {
1397 update_open_stateflags(state
, fmode
);
1398 spin_unlock(&state
->owner
->so_lock
);
1399 goto out_return_state
;
1401 spin_unlock(&state
->owner
->so_lock
);
1403 delegation
= rcu_dereference(nfsi
->delegation
);
1404 if (!can_open_delegated(delegation
, fmode
, claim
)) {
1408 /* Save the delegation */
1409 nfs4_stateid_copy(&stateid
, &delegation
->stateid
);
1411 nfs_release_seqid(opendata
->o_arg
.seqid
);
1412 if (!opendata
->is_recover
) {
1413 ret
= nfs_may_open(state
->inode
, state
->owner
->so_cred
, open_mode
);
1419 /* Try to update the stateid using the delegation */
1420 if (update_open_stateid(state
, NULL
, &stateid
, fmode
))
1421 goto out_return_state
;
1424 return ERR_PTR(ret
);
1426 atomic_inc(&state
->count
);
1431 nfs4_opendata_check_deleg(struct nfs4_opendata
*data
, struct nfs4_state
*state
)
1433 struct nfs_client
*clp
= NFS_SERVER(state
->inode
)->nfs_client
;
1434 struct nfs_delegation
*delegation
;
1435 int delegation_flags
= 0;
1438 delegation
= rcu_dereference(NFS_I(state
->inode
)->delegation
);
1440 delegation_flags
= delegation
->flags
;
1442 if (data
->o_arg
.claim
== NFS4_OPEN_CLAIM_DELEGATE_CUR
) {
1443 pr_err_ratelimited("NFS: Broken NFSv4 server %s is "
1444 "returning a delegation for "
1445 "OPEN(CLAIM_DELEGATE_CUR)\n",
1447 } else if ((delegation_flags
& 1UL<<NFS_DELEGATION_NEED_RECLAIM
) == 0)
1448 nfs_inode_set_delegation(state
->inode
,
1449 data
->owner
->so_cred
,
1452 nfs_inode_reclaim_delegation(state
->inode
,
1453 data
->owner
->so_cred
,
1458 * Check the inode attributes against the CLAIM_PREVIOUS returned attributes
1459 * and update the nfs4_state.
1461 static struct nfs4_state
*
1462 _nfs4_opendata_reclaim_to_nfs4_state(struct nfs4_opendata
*data
)
1464 struct inode
*inode
= data
->state
->inode
;
1465 struct nfs4_state
*state
= data
->state
;
1468 if (!data
->rpc_done
) {
1469 if (data
->rpc_status
) {
1470 ret
= data
->rpc_status
;
1473 /* cached opens have already been processed */
1477 ret
= nfs_refresh_inode(inode
, &data
->f_attr
);
1481 if (data
->o_res
.delegation_type
!= 0)
1482 nfs4_opendata_check_deleg(data
, state
);
1484 update_open_stateid(state
, &data
->o_res
.stateid
, NULL
,
1486 atomic_inc(&state
->count
);
1490 return ERR_PTR(ret
);
1494 static struct nfs4_state
*
1495 _nfs4_opendata_to_nfs4_state(struct nfs4_opendata
*data
)
1497 struct inode
*inode
;
1498 struct nfs4_state
*state
= NULL
;
1501 if (!data
->rpc_done
) {
1502 state
= nfs4_try_open_cached(data
);
1507 if (!(data
->f_attr
.valid
& NFS_ATTR_FATTR
))
1509 inode
= nfs_fhget(data
->dir
->d_sb
, &data
->o_res
.fh
, &data
->f_attr
, data
->f_label
);
1510 ret
= PTR_ERR(inode
);
1514 state
= nfs4_get_open_state(inode
, data
->owner
);
1517 if (data
->o_res
.delegation_type
!= 0)
1518 nfs4_opendata_check_deleg(data
, state
);
1519 update_open_stateid(state
, &data
->o_res
.stateid
, NULL
,
1523 nfs_release_seqid(data
->o_arg
.seqid
);
1528 return ERR_PTR(ret
);
1531 static struct nfs4_state
*
1532 nfs4_opendata_to_nfs4_state(struct nfs4_opendata
*data
)
1534 if (data
->o_arg
.claim
== NFS4_OPEN_CLAIM_PREVIOUS
)
1535 return _nfs4_opendata_reclaim_to_nfs4_state(data
);
1536 return _nfs4_opendata_to_nfs4_state(data
);
1539 static struct nfs_open_context
*nfs4_state_find_open_context(struct nfs4_state
*state
)
1541 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
1542 struct nfs_open_context
*ctx
;
1544 spin_lock(&state
->inode
->i_lock
);
1545 list_for_each_entry(ctx
, &nfsi
->open_files
, list
) {
1546 if (ctx
->state
!= state
)
1548 get_nfs_open_context(ctx
);
1549 spin_unlock(&state
->inode
->i_lock
);
1552 spin_unlock(&state
->inode
->i_lock
);
1553 return ERR_PTR(-ENOENT
);
1556 static struct nfs4_opendata
*nfs4_open_recoverdata_alloc(struct nfs_open_context
*ctx
,
1557 struct nfs4_state
*state
, enum open_claim_type4 claim
)
1559 struct nfs4_opendata
*opendata
;
1561 opendata
= nfs4_opendata_alloc(ctx
->dentry
, state
->owner
, 0, 0,
1562 NULL
, NULL
, claim
, GFP_NOFS
);
1563 if (opendata
== NULL
)
1564 return ERR_PTR(-ENOMEM
);
1565 opendata
->state
= state
;
1566 atomic_inc(&state
->count
);
1570 static int nfs4_open_recover_helper(struct nfs4_opendata
*opendata
, fmode_t fmode
, struct nfs4_state
**res
)
1572 struct nfs4_state
*newstate
;
1575 if ((opendata
->o_arg
.claim
== NFS4_OPEN_CLAIM_DELEGATE_CUR
||
1576 opendata
->o_arg
.claim
== NFS4_OPEN_CLAIM_DELEG_CUR_FH
) &&
1577 (opendata
->o_arg
.u
.delegation_type
& fmode
) != fmode
)
1578 /* This mode can't have been delegated, so we must have
1579 * a valid open_stateid to cover it - not need to reclaim.
1582 opendata
->o_arg
.open_flags
= 0;
1583 opendata
->o_arg
.fmode
= fmode
;
1584 opendata
->o_arg
.share_access
= nfs4_map_atomic_open_share(
1585 NFS_SB(opendata
->dentry
->d_sb
),
1587 memset(&opendata
->o_res
, 0, sizeof(opendata
->o_res
));
1588 memset(&opendata
->c_res
, 0, sizeof(opendata
->c_res
));
1589 nfs4_init_opendata_res(opendata
);
1590 ret
= _nfs4_recover_proc_open(opendata
);
1593 newstate
= nfs4_opendata_to_nfs4_state(opendata
);
1594 if (IS_ERR(newstate
))
1595 return PTR_ERR(newstate
);
1596 nfs4_close_state(newstate
, fmode
);
1601 static int nfs4_open_recover(struct nfs4_opendata
*opendata
, struct nfs4_state
*state
)
1603 struct nfs4_state
*newstate
;
1606 /* Don't trigger recovery in nfs_test_and_clear_all_open_stateid */
1607 clear_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1608 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1609 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1610 /* memory barrier prior to reading state->n_* */
1611 clear_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1612 clear_bit(NFS_OPEN_STATE
, &state
->flags
);
1614 if (state
->n_rdwr
!= 0) {
1615 ret
= nfs4_open_recover_helper(opendata
, FMODE_READ
|FMODE_WRITE
, &newstate
);
1618 if (newstate
!= state
)
1621 if (state
->n_wronly
!= 0) {
1622 ret
= nfs4_open_recover_helper(opendata
, FMODE_WRITE
, &newstate
);
1625 if (newstate
!= state
)
1628 if (state
->n_rdonly
!= 0) {
1629 ret
= nfs4_open_recover_helper(opendata
, FMODE_READ
, &newstate
);
1632 if (newstate
!= state
)
1636 * We may have performed cached opens for all three recoveries.
1637 * Check if we need to update the current stateid.
1639 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0 &&
1640 !nfs4_stateid_match(&state
->stateid
, &state
->open_stateid
)) {
1641 write_seqlock(&state
->seqlock
);
1642 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0)
1643 nfs4_stateid_copy(&state
->stateid
, &state
->open_stateid
);
1644 write_sequnlock(&state
->seqlock
);
1651 * reclaim state on the server after a reboot.
1653 static int _nfs4_do_open_reclaim(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1655 struct nfs_delegation
*delegation
;
1656 struct nfs4_opendata
*opendata
;
1657 fmode_t delegation_type
= 0;
1660 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
,
1661 NFS4_OPEN_CLAIM_PREVIOUS
);
1662 if (IS_ERR(opendata
))
1663 return PTR_ERR(opendata
);
1665 delegation
= rcu_dereference(NFS_I(state
->inode
)->delegation
);
1666 if (delegation
!= NULL
&& test_bit(NFS_DELEGATION_NEED_RECLAIM
, &delegation
->flags
) != 0)
1667 delegation_type
= delegation
->type
;
1669 opendata
->o_arg
.u
.delegation_type
= delegation_type
;
1670 status
= nfs4_open_recover(opendata
, state
);
1671 nfs4_opendata_put(opendata
);
1675 static int nfs4_do_open_reclaim(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1677 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1678 struct nfs4_exception exception
= { };
1681 err
= _nfs4_do_open_reclaim(ctx
, state
);
1682 trace_nfs4_open_reclaim(ctx
, 0, err
);
1683 if (nfs4_clear_cap_atomic_open_v1(server
, err
, &exception
))
1685 if (err
!= -NFS4ERR_DELAY
)
1687 nfs4_handle_exception(server
, err
, &exception
);
1688 } while (exception
.retry
);
1692 static int nfs4_open_reclaim(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
1694 struct nfs_open_context
*ctx
;
1697 ctx
= nfs4_state_find_open_context(state
);
1700 ret
= nfs4_do_open_reclaim(ctx
, state
);
1701 put_nfs_open_context(ctx
);
1705 static int nfs4_handle_delegation_recall_error(struct nfs_server
*server
, struct nfs4_state
*state
, const nfs4_stateid
*stateid
, int err
)
1709 printk(KERN_ERR
"NFS: %s: unhandled error "
1710 "%d.\n", __func__
, err
);
1716 case -NFS4ERR_BADSESSION
:
1717 case -NFS4ERR_BADSLOT
:
1718 case -NFS4ERR_BAD_HIGH_SLOT
:
1719 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
1720 case -NFS4ERR_DEADSESSION
:
1721 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1722 nfs4_schedule_session_recovery(server
->nfs_client
->cl_session
, err
);
1724 case -NFS4ERR_STALE_CLIENTID
:
1725 case -NFS4ERR_STALE_STATEID
:
1726 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1727 case -NFS4ERR_EXPIRED
:
1728 /* Don't recall a delegation if it was lost */
1729 nfs4_schedule_lease_recovery(server
->nfs_client
);
1731 case -NFS4ERR_MOVED
:
1732 nfs4_schedule_migration_recovery(server
);
1734 case -NFS4ERR_LEASE_MOVED
:
1735 nfs4_schedule_lease_moved_recovery(server
->nfs_client
);
1737 case -NFS4ERR_DELEG_REVOKED
:
1738 case -NFS4ERR_ADMIN_REVOKED
:
1739 case -NFS4ERR_BAD_STATEID
:
1740 case -NFS4ERR_OPENMODE
:
1741 nfs_inode_find_state_and_recover(state
->inode
,
1743 nfs4_schedule_stateid_recovery(server
, state
);
1745 case -NFS4ERR_DELAY
:
1746 case -NFS4ERR_GRACE
:
1747 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1751 case -NFS4ERR_DENIED
:
1752 /* kill_proc(fl->fl_pid, SIGLOST, 1); */
1758 int nfs4_open_delegation_recall(struct nfs_open_context
*ctx
, struct nfs4_state
*state
, const nfs4_stateid
*stateid
)
1760 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1761 struct nfs4_opendata
*opendata
;
1764 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
,
1765 NFS4_OPEN_CLAIM_DELEG_CUR_FH
);
1766 if (IS_ERR(opendata
))
1767 return PTR_ERR(opendata
);
1768 nfs4_stateid_copy(&opendata
->o_arg
.u
.delegation
, stateid
);
1769 err
= nfs4_open_recover(opendata
, state
);
1770 nfs4_opendata_put(opendata
);
1771 return nfs4_handle_delegation_recall_error(server
, state
, stateid
, err
);
1774 static void nfs4_open_confirm_prepare(struct rpc_task
*task
, void *calldata
)
1776 struct nfs4_opendata
*data
= calldata
;
1778 nfs40_setup_sequence(data
->o_arg
.server
->nfs_client
->cl_slot_tbl
,
1779 &data
->c_arg
.seq_args
, &data
->c_res
.seq_res
, task
);
1782 static void nfs4_open_confirm_done(struct rpc_task
*task
, void *calldata
)
1784 struct nfs4_opendata
*data
= calldata
;
1786 nfs40_sequence_done(task
, &data
->c_res
.seq_res
);
1788 data
->rpc_status
= task
->tk_status
;
1789 if (data
->rpc_status
== 0) {
1790 nfs4_stateid_copy(&data
->o_res
.stateid
, &data
->c_res
.stateid
);
1791 nfs_confirm_seqid(&data
->owner
->so_seqid
, 0);
1792 renew_lease(data
->o_res
.server
, data
->timestamp
);
1797 static void nfs4_open_confirm_release(void *calldata
)
1799 struct nfs4_opendata
*data
= calldata
;
1800 struct nfs4_state
*state
= NULL
;
1802 /* If this request hasn't been cancelled, do nothing */
1803 if (data
->cancelled
== 0)
1805 /* In case of error, no cleanup! */
1806 if (!data
->rpc_done
)
1808 state
= nfs4_opendata_to_nfs4_state(data
);
1810 nfs4_close_state(state
, data
->o_arg
.fmode
);
1812 nfs4_opendata_put(data
);
1815 static const struct rpc_call_ops nfs4_open_confirm_ops
= {
1816 .rpc_call_prepare
= nfs4_open_confirm_prepare
,
1817 .rpc_call_done
= nfs4_open_confirm_done
,
1818 .rpc_release
= nfs4_open_confirm_release
,
1822 * Note: On error, nfs4_proc_open_confirm will free the struct nfs4_opendata
1824 static int _nfs4_proc_open_confirm(struct nfs4_opendata
*data
)
1826 struct nfs_server
*server
= NFS_SERVER(d_inode(data
->dir
));
1827 struct rpc_task
*task
;
1828 struct rpc_message msg
= {
1829 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_CONFIRM
],
1830 .rpc_argp
= &data
->c_arg
,
1831 .rpc_resp
= &data
->c_res
,
1832 .rpc_cred
= data
->owner
->so_cred
,
1834 struct rpc_task_setup task_setup_data
= {
1835 .rpc_client
= server
->client
,
1836 .rpc_message
= &msg
,
1837 .callback_ops
= &nfs4_open_confirm_ops
,
1838 .callback_data
= data
,
1839 .workqueue
= nfsiod_workqueue
,
1840 .flags
= RPC_TASK_ASYNC
,
1844 nfs4_init_sequence(&data
->c_arg
.seq_args
, &data
->c_res
.seq_res
, 1);
1845 kref_get(&data
->kref
);
1847 data
->rpc_status
= 0;
1848 data
->timestamp
= jiffies
;
1849 task
= rpc_run_task(&task_setup_data
);
1851 return PTR_ERR(task
);
1852 status
= nfs4_wait_for_completion_rpc_task(task
);
1854 data
->cancelled
= 1;
1857 status
= data
->rpc_status
;
1862 static void nfs4_open_prepare(struct rpc_task
*task
, void *calldata
)
1864 struct nfs4_opendata
*data
= calldata
;
1865 struct nfs4_state_owner
*sp
= data
->owner
;
1866 struct nfs_client
*clp
= sp
->so_server
->nfs_client
;
1867 enum open_claim_type4 claim
= data
->o_arg
.claim
;
1869 if (nfs_wait_on_sequence(data
->o_arg
.seqid
, task
) != 0)
1872 * Check if we still need to send an OPEN call, or if we can use
1873 * a delegation instead.
1875 if (data
->state
!= NULL
) {
1876 struct nfs_delegation
*delegation
;
1878 if (can_open_cached(data
->state
, data
->o_arg
.fmode
, data
->o_arg
.open_flags
))
1881 delegation
= rcu_dereference(NFS_I(data
->state
->inode
)->delegation
);
1882 if (can_open_delegated(delegation
, data
->o_arg
.fmode
, claim
))
1883 goto unlock_no_action
;
1886 /* Update client id. */
1887 data
->o_arg
.clientid
= clp
->cl_clientid
;
1891 case NFS4_OPEN_CLAIM_PREVIOUS
:
1892 case NFS4_OPEN_CLAIM_DELEG_CUR_FH
:
1893 case NFS4_OPEN_CLAIM_DELEG_PREV_FH
:
1894 data
->o_arg
.open_bitmap
= &nfs4_open_noattr_bitmap
[0];
1895 case NFS4_OPEN_CLAIM_FH
:
1896 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_NOATTR
];
1897 nfs_copy_fh(&data
->o_res
.fh
, data
->o_arg
.fh
);
1899 data
->timestamp
= jiffies
;
1900 if (nfs4_setup_sequence(data
->o_arg
.server
,
1901 &data
->o_arg
.seq_args
,
1902 &data
->o_res
.seq_res
,
1904 nfs_release_seqid(data
->o_arg
.seqid
);
1906 /* Set the create mode (note dependency on the session type) */
1907 data
->o_arg
.createmode
= NFS4_CREATE_UNCHECKED
;
1908 if (data
->o_arg
.open_flags
& O_EXCL
) {
1909 data
->o_arg
.createmode
= NFS4_CREATE_EXCLUSIVE
;
1910 if (nfs4_has_persistent_session(clp
))
1911 data
->o_arg
.createmode
= NFS4_CREATE_GUARDED
;
1912 else if (clp
->cl_mvops
->minor_version
> 0)
1913 data
->o_arg
.createmode
= NFS4_CREATE_EXCLUSIVE4_1
;
1919 task
->tk_action
= NULL
;
1921 nfs4_sequence_done(task
, &data
->o_res
.seq_res
);
1924 static void nfs4_open_done(struct rpc_task
*task
, void *calldata
)
1926 struct nfs4_opendata
*data
= calldata
;
1928 data
->rpc_status
= task
->tk_status
;
1930 if (!nfs4_sequence_done(task
, &data
->o_res
.seq_res
))
1933 if (task
->tk_status
== 0) {
1934 if (data
->o_res
.f_attr
->valid
& NFS_ATTR_FATTR_TYPE
) {
1935 switch (data
->o_res
.f_attr
->mode
& S_IFMT
) {
1939 data
->rpc_status
= -ELOOP
;
1942 data
->rpc_status
= -EISDIR
;
1945 data
->rpc_status
= -ENOTDIR
;
1948 renew_lease(data
->o_res
.server
, data
->timestamp
);
1949 if (!(data
->o_res
.rflags
& NFS4_OPEN_RESULT_CONFIRM
))
1950 nfs_confirm_seqid(&data
->owner
->so_seqid
, 0);
1955 static void nfs4_open_release(void *calldata
)
1957 struct nfs4_opendata
*data
= calldata
;
1958 struct nfs4_state
*state
= NULL
;
1960 /* If this request hasn't been cancelled, do nothing */
1961 if (data
->cancelled
== 0)
1963 /* In case of error, no cleanup! */
1964 if (data
->rpc_status
!= 0 || !data
->rpc_done
)
1966 /* In case we need an open_confirm, no cleanup! */
1967 if (data
->o_res
.rflags
& NFS4_OPEN_RESULT_CONFIRM
)
1969 state
= nfs4_opendata_to_nfs4_state(data
);
1971 nfs4_close_state(state
, data
->o_arg
.fmode
);
1973 nfs4_opendata_put(data
);
1976 static const struct rpc_call_ops nfs4_open_ops
= {
1977 .rpc_call_prepare
= nfs4_open_prepare
,
1978 .rpc_call_done
= nfs4_open_done
,
1979 .rpc_release
= nfs4_open_release
,
1982 static int nfs4_run_open_task(struct nfs4_opendata
*data
, int isrecover
)
1984 struct inode
*dir
= d_inode(data
->dir
);
1985 struct nfs_server
*server
= NFS_SERVER(dir
);
1986 struct nfs_openargs
*o_arg
= &data
->o_arg
;
1987 struct nfs_openres
*o_res
= &data
->o_res
;
1988 struct rpc_task
*task
;
1989 struct rpc_message msg
= {
1990 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN
],
1993 .rpc_cred
= data
->owner
->so_cred
,
1995 struct rpc_task_setup task_setup_data
= {
1996 .rpc_client
= server
->client
,
1997 .rpc_message
= &msg
,
1998 .callback_ops
= &nfs4_open_ops
,
1999 .callback_data
= data
,
2000 .workqueue
= nfsiod_workqueue
,
2001 .flags
= RPC_TASK_ASYNC
,
2005 nfs4_init_sequence(&o_arg
->seq_args
, &o_res
->seq_res
, 1);
2006 kref_get(&data
->kref
);
2008 data
->rpc_status
= 0;
2009 data
->cancelled
= 0;
2010 data
->is_recover
= 0;
2012 nfs4_set_sequence_privileged(&o_arg
->seq_args
);
2013 data
->is_recover
= 1;
2015 task
= rpc_run_task(&task_setup_data
);
2017 return PTR_ERR(task
);
2018 status
= nfs4_wait_for_completion_rpc_task(task
);
2020 data
->cancelled
= 1;
2023 status
= data
->rpc_status
;
2029 static int _nfs4_recover_proc_open(struct nfs4_opendata
*data
)
2031 struct inode
*dir
= d_inode(data
->dir
);
2032 struct nfs_openres
*o_res
= &data
->o_res
;
2035 status
= nfs4_run_open_task(data
, 1);
2036 if (status
!= 0 || !data
->rpc_done
)
2039 nfs_fattr_map_and_free_names(NFS_SERVER(dir
), &data
->f_attr
);
2041 if (o_res
->rflags
& NFS4_OPEN_RESULT_CONFIRM
) {
2042 status
= _nfs4_proc_open_confirm(data
);
2051 * Additional permission checks in order to distinguish between an
2052 * open for read, and an open for execute. This works around the
2053 * fact that NFSv4 OPEN treats read and execute permissions as being
2055 * Note that in the non-execute case, we want to turn off permission
2056 * checking if we just created a new file (POSIX open() semantics).
2058 static int nfs4_opendata_access(struct rpc_cred
*cred
,
2059 struct nfs4_opendata
*opendata
,
2060 struct nfs4_state
*state
, fmode_t fmode
,
2063 struct nfs_access_entry cache
;
2066 /* access call failed or for some reason the server doesn't
2067 * support any access modes -- defer access call until later */
2068 if (opendata
->o_res
.access_supported
== 0)
2073 * Use openflags to check for exec, because fmode won't
2074 * always have FMODE_EXEC set when file open for exec.
2076 if (openflags
& __FMODE_EXEC
) {
2077 /* ONLY check for exec rights */
2079 } else if ((fmode
& FMODE_READ
) && !opendata
->file_created
)
2083 cache
.jiffies
= jiffies
;
2084 nfs_access_set_mask(&cache
, opendata
->o_res
.access_result
);
2085 nfs_access_add_cache(state
->inode
, &cache
);
2087 if ((mask
& ~cache
.mask
& (MAY_READ
| MAY_EXEC
)) == 0)
2090 /* even though OPEN succeeded, access is denied. Close the file */
2091 nfs4_close_state(state
, fmode
);
2096 * Note: On error, nfs4_proc_open will free the struct nfs4_opendata
2098 static int _nfs4_proc_open(struct nfs4_opendata
*data
)
2100 struct inode
*dir
= d_inode(data
->dir
);
2101 struct nfs_server
*server
= NFS_SERVER(dir
);
2102 struct nfs_openargs
*o_arg
= &data
->o_arg
;
2103 struct nfs_openres
*o_res
= &data
->o_res
;
2106 status
= nfs4_run_open_task(data
, 0);
2107 if (!data
->rpc_done
)
2110 if (status
== -NFS4ERR_BADNAME
&&
2111 !(o_arg
->open_flags
& O_CREAT
))
2116 nfs_fattr_map_and_free_names(server
, &data
->f_attr
);
2118 if (o_arg
->open_flags
& O_CREAT
) {
2119 update_changeattr(dir
, &o_res
->cinfo
);
2120 if (o_arg
->open_flags
& O_EXCL
)
2121 data
->file_created
= 1;
2122 else if (o_res
->cinfo
.before
!= o_res
->cinfo
.after
)
2123 data
->file_created
= 1;
2125 if ((o_res
->rflags
& NFS4_OPEN_RESULT_LOCKTYPE_POSIX
) == 0)
2126 server
->caps
&= ~NFS_CAP_POSIX_LOCK
;
2127 if(o_res
->rflags
& NFS4_OPEN_RESULT_CONFIRM
) {
2128 status
= _nfs4_proc_open_confirm(data
);
2132 if (!(o_res
->f_attr
->valid
& NFS_ATTR_FATTR
))
2133 nfs4_proc_getattr(server
, &o_res
->fh
, o_res
->f_attr
, o_res
->f_label
);
2137 static int nfs4_recover_expired_lease(struct nfs_server
*server
)
2139 return nfs4_client_recover_expired_lease(server
->nfs_client
);
2144 * reclaim state on the server after a network partition.
2145 * Assumes caller holds the appropriate lock
2147 static int _nfs4_open_expired(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
2149 struct nfs4_opendata
*opendata
;
2152 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
,
2153 NFS4_OPEN_CLAIM_FH
);
2154 if (IS_ERR(opendata
))
2155 return PTR_ERR(opendata
);
2156 ret
= nfs4_open_recover(opendata
, state
);
2158 d_drop(ctx
->dentry
);
2159 nfs4_opendata_put(opendata
);
2163 static int nfs4_do_open_expired(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
2165 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
2166 struct nfs4_exception exception
= { };
2170 err
= _nfs4_open_expired(ctx
, state
);
2171 trace_nfs4_open_expired(ctx
, 0, err
);
2172 if (nfs4_clear_cap_atomic_open_v1(server
, err
, &exception
))
2177 case -NFS4ERR_GRACE
:
2178 case -NFS4ERR_DELAY
:
2179 nfs4_handle_exception(server
, err
, &exception
);
2182 } while (exception
.retry
);
2187 static int nfs4_open_expired(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
2189 struct nfs_open_context
*ctx
;
2192 ctx
= nfs4_state_find_open_context(state
);
2195 ret
= nfs4_do_open_expired(ctx
, state
);
2196 put_nfs_open_context(ctx
);
2200 static void nfs_finish_clear_delegation_stateid(struct nfs4_state
*state
)
2202 nfs_remove_bad_delegation(state
->inode
);
2203 write_seqlock(&state
->seqlock
);
2204 nfs4_stateid_copy(&state
->stateid
, &state
->open_stateid
);
2205 write_sequnlock(&state
->seqlock
);
2206 clear_bit(NFS_DELEGATED_STATE
, &state
->flags
);
2209 static void nfs40_clear_delegation_stateid(struct nfs4_state
*state
)
2211 if (rcu_access_pointer(NFS_I(state
->inode
)->delegation
) != NULL
)
2212 nfs_finish_clear_delegation_stateid(state
);
2215 static int nfs40_open_expired(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
2217 /* NFSv4.0 doesn't allow for delegation recovery on open expire */
2218 nfs40_clear_delegation_stateid(state
);
2219 return nfs4_open_expired(sp
, state
);
2222 #if defined(CONFIG_NFS_V4_1)
2223 static void nfs41_check_delegation_stateid(struct nfs4_state
*state
)
2225 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
2226 nfs4_stateid stateid
;
2227 struct nfs_delegation
*delegation
;
2228 struct rpc_cred
*cred
;
2231 /* Get the delegation credential for use by test/free_stateid */
2233 delegation
= rcu_dereference(NFS_I(state
->inode
)->delegation
);
2234 if (delegation
== NULL
) {
2239 nfs4_stateid_copy(&stateid
, &delegation
->stateid
);
2240 cred
= get_rpccred(delegation
->cred
);
2242 status
= nfs41_test_stateid(server
, &stateid
, cred
);
2243 trace_nfs4_test_delegation_stateid(state
, NULL
, status
);
2245 if (status
!= NFS_OK
) {
2246 /* Free the stateid unless the server explicitly
2247 * informs us the stateid is unrecognized. */
2248 if (status
!= -NFS4ERR_BAD_STATEID
)
2249 nfs41_free_stateid(server
, &stateid
, cred
);
2250 nfs_finish_clear_delegation_stateid(state
);
2257 * nfs41_check_open_stateid - possibly free an open stateid
2259 * @state: NFSv4 state for an inode
2261 * Returns NFS_OK if recovery for this stateid is now finished.
2262 * Otherwise a negative NFS4ERR value is returned.
2264 static int nfs41_check_open_stateid(struct nfs4_state
*state
)
2266 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
2267 nfs4_stateid
*stateid
= &state
->open_stateid
;
2268 struct rpc_cred
*cred
= state
->owner
->so_cred
;
2271 /* If a state reset has been done, test_stateid is unneeded */
2272 if ((test_bit(NFS_O_RDONLY_STATE
, &state
->flags
) == 0) &&
2273 (test_bit(NFS_O_WRONLY_STATE
, &state
->flags
) == 0) &&
2274 (test_bit(NFS_O_RDWR_STATE
, &state
->flags
) == 0))
2275 return -NFS4ERR_BAD_STATEID
;
2277 status
= nfs41_test_stateid(server
, stateid
, cred
);
2278 trace_nfs4_test_open_stateid(state
, NULL
, status
);
2279 if (status
!= NFS_OK
) {
2280 /* Free the stateid unless the server explicitly
2281 * informs us the stateid is unrecognized. */
2282 if (status
!= -NFS4ERR_BAD_STATEID
)
2283 nfs41_free_stateid(server
, stateid
, cred
);
2285 clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
2286 clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
2287 clear_bit(NFS_O_RDWR_STATE
, &state
->flags
);
2288 clear_bit(NFS_OPEN_STATE
, &state
->flags
);
2293 static int nfs41_open_expired(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
2297 nfs41_check_delegation_stateid(state
);
2298 status
= nfs41_check_open_stateid(state
);
2299 if (status
!= NFS_OK
)
2300 status
= nfs4_open_expired(sp
, state
);
2306 * on an EXCLUSIVE create, the server should send back a bitmask with FATTR4-*
2307 * fields corresponding to attributes that were used to store the verifier.
2308 * Make sure we clobber those fields in the later setattr call
2310 static inline void nfs4_exclusive_attrset(struct nfs4_opendata
*opendata
, struct iattr
*sattr
)
2312 if ((opendata
->o_res
.attrset
[1] & FATTR4_WORD1_TIME_ACCESS
) &&
2313 !(sattr
->ia_valid
& ATTR_ATIME_SET
))
2314 sattr
->ia_valid
|= ATTR_ATIME
;
2316 if ((opendata
->o_res
.attrset
[1] & FATTR4_WORD1_TIME_MODIFY
) &&
2317 !(sattr
->ia_valid
& ATTR_MTIME_SET
))
2318 sattr
->ia_valid
|= ATTR_MTIME
;
2321 static int _nfs4_open_and_get_state(struct nfs4_opendata
*opendata
,
2324 struct nfs_open_context
*ctx
)
2326 struct nfs4_state_owner
*sp
= opendata
->owner
;
2327 struct nfs_server
*server
= sp
->so_server
;
2328 struct dentry
*dentry
;
2329 struct nfs4_state
*state
;
2333 seq
= raw_seqcount_begin(&sp
->so_reclaim_seqcount
);
2335 ret
= _nfs4_proc_open(opendata
);
2339 state
= nfs4_opendata_to_nfs4_state(opendata
);
2340 ret
= PTR_ERR(state
);
2343 if (server
->caps
& NFS_CAP_POSIX_LOCK
)
2344 set_bit(NFS_STATE_POSIX_LOCKS
, &state
->flags
);
2346 dentry
= opendata
->dentry
;
2347 if (d_really_is_negative(dentry
)) {
2348 /* FIXME: Is this d_drop() ever needed? */
2350 dentry
= d_add_unique(dentry
, igrab(state
->inode
));
2351 if (dentry
== NULL
) {
2352 dentry
= opendata
->dentry
;
2353 } else if (dentry
!= ctx
->dentry
) {
2355 ctx
->dentry
= dget(dentry
);
2357 nfs_set_verifier(dentry
,
2358 nfs_save_change_attribute(d_inode(opendata
->dir
)));
2361 ret
= nfs4_opendata_access(sp
->so_cred
, opendata
, state
, fmode
, flags
);
2366 if (d_inode(dentry
) == state
->inode
) {
2367 nfs_inode_attach_open_context(ctx
);
2368 if (read_seqcount_retry(&sp
->so_reclaim_seqcount
, seq
))
2369 nfs4_schedule_stateid_recovery(server
, state
);
2376 * Returns a referenced nfs4_state
2378 static int _nfs4_do_open(struct inode
*dir
,
2379 struct nfs_open_context
*ctx
,
2381 struct iattr
*sattr
,
2382 struct nfs4_label
*label
,
2385 struct nfs4_state_owner
*sp
;
2386 struct nfs4_state
*state
= NULL
;
2387 struct nfs_server
*server
= NFS_SERVER(dir
);
2388 struct nfs4_opendata
*opendata
;
2389 struct dentry
*dentry
= ctx
->dentry
;
2390 struct rpc_cred
*cred
= ctx
->cred
;
2391 struct nfs4_threshold
**ctx_th
= &ctx
->mdsthreshold
;
2392 fmode_t fmode
= ctx
->mode
& (FMODE_READ
|FMODE_WRITE
|FMODE_EXEC
);
2393 enum open_claim_type4 claim
= NFS4_OPEN_CLAIM_NULL
;
2394 struct nfs4_label
*olabel
= NULL
;
2397 /* Protect against reboot recovery conflicts */
2399 sp
= nfs4_get_state_owner(server
, cred
, GFP_KERNEL
);
2401 dprintk("nfs4_do_open: nfs4_get_state_owner failed!\n");
2404 status
= nfs4_recover_expired_lease(server
);
2406 goto err_put_state_owner
;
2407 if (d_really_is_positive(dentry
))
2408 nfs4_return_incompatible_delegation(d_inode(dentry
), fmode
);
2410 if (d_really_is_positive(dentry
))
2411 claim
= NFS4_OPEN_CLAIM_FH
;
2412 opendata
= nfs4_opendata_alloc(dentry
, sp
, fmode
, flags
, sattr
,
2413 label
, claim
, GFP_KERNEL
);
2414 if (opendata
== NULL
)
2415 goto err_put_state_owner
;
2418 olabel
= nfs4_label_alloc(server
, GFP_KERNEL
);
2419 if (IS_ERR(olabel
)) {
2420 status
= PTR_ERR(olabel
);
2421 goto err_opendata_put
;
2425 if (server
->attr_bitmask
[2] & FATTR4_WORD2_MDSTHRESHOLD
) {
2426 if (!opendata
->f_attr
.mdsthreshold
) {
2427 opendata
->f_attr
.mdsthreshold
= pnfs_mdsthreshold_alloc();
2428 if (!opendata
->f_attr
.mdsthreshold
)
2429 goto err_free_label
;
2431 opendata
->o_arg
.open_bitmap
= &nfs4_pnfs_open_bitmap
[0];
2433 if (d_really_is_positive(dentry
))
2434 opendata
->state
= nfs4_get_open_state(d_inode(dentry
), sp
);
2436 status
= _nfs4_open_and_get_state(opendata
, fmode
, flags
, ctx
);
2438 goto err_free_label
;
2441 if ((opendata
->o_arg
.open_flags
& (O_CREAT
|O_EXCL
)) == (O_CREAT
|O_EXCL
) &&
2442 (opendata
->o_arg
.createmode
!= NFS4_CREATE_GUARDED
)) {
2443 nfs4_exclusive_attrset(opendata
, sattr
);
2445 nfs_fattr_init(opendata
->o_res
.f_attr
);
2446 status
= nfs4_do_setattr(state
->inode
, cred
,
2447 opendata
->o_res
.f_attr
, sattr
,
2448 state
, label
, olabel
);
2450 nfs_setattr_update_inode(state
->inode
, sattr
,
2451 opendata
->o_res
.f_attr
);
2452 nfs_setsecurity(state
->inode
, opendata
->o_res
.f_attr
, olabel
);
2455 if (opened
&& opendata
->file_created
)
2456 *opened
|= FILE_CREATED
;
2458 if (pnfs_use_threshold(ctx_th
, opendata
->f_attr
.mdsthreshold
, server
)) {
2459 *ctx_th
= opendata
->f_attr
.mdsthreshold
;
2460 opendata
->f_attr
.mdsthreshold
= NULL
;
2463 nfs4_label_free(olabel
);
2465 nfs4_opendata_put(opendata
);
2466 nfs4_put_state_owner(sp
);
2469 nfs4_label_free(olabel
);
2471 nfs4_opendata_put(opendata
);
2472 err_put_state_owner
:
2473 nfs4_put_state_owner(sp
);
2479 static struct nfs4_state
*nfs4_do_open(struct inode
*dir
,
2480 struct nfs_open_context
*ctx
,
2482 struct iattr
*sattr
,
2483 struct nfs4_label
*label
,
2486 struct nfs_server
*server
= NFS_SERVER(dir
);
2487 struct nfs4_exception exception
= { };
2488 struct nfs4_state
*res
;
2492 status
= _nfs4_do_open(dir
, ctx
, flags
, sattr
, label
, opened
);
2494 trace_nfs4_open_file(ctx
, flags
, status
);
2497 /* NOTE: BAD_SEQID means the server and client disagree about the
2498 * book-keeping w.r.t. state-changing operations
2499 * (OPEN/CLOSE/LOCK/LOCKU...)
2500 * It is actually a sign of a bug on the client or on the server.
2502 * If we receive a BAD_SEQID error in the particular case of
2503 * doing an OPEN, we assume that nfs_increment_open_seqid() will
2504 * have unhashed the old state_owner for us, and that we can
2505 * therefore safely retry using a new one. We should still warn
2506 * the user though...
2508 if (status
== -NFS4ERR_BAD_SEQID
) {
2509 pr_warn_ratelimited("NFS: v4 server %s "
2510 " returned a bad sequence-id error!\n",
2511 NFS_SERVER(dir
)->nfs_client
->cl_hostname
);
2512 exception
.retry
= 1;
2516 * BAD_STATEID on OPEN means that the server cancelled our
2517 * state before it received the OPEN_CONFIRM.
2518 * Recover by retrying the request as per the discussion
2519 * on Page 181 of RFC3530.
2521 if (status
== -NFS4ERR_BAD_STATEID
) {
2522 exception
.retry
= 1;
2525 if (status
== -EAGAIN
) {
2526 /* We must have found a delegation */
2527 exception
.retry
= 1;
2530 if (nfs4_clear_cap_atomic_open_v1(server
, status
, &exception
))
2532 res
= ERR_PTR(nfs4_handle_exception(server
,
2533 status
, &exception
));
2534 } while (exception
.retry
);
2538 static int _nfs4_do_setattr(struct inode
*inode
, struct rpc_cred
*cred
,
2539 struct nfs_fattr
*fattr
, struct iattr
*sattr
,
2540 struct nfs4_state
*state
, struct nfs4_label
*ilabel
,
2541 struct nfs4_label
*olabel
)
2543 struct nfs_server
*server
= NFS_SERVER(inode
);
2544 struct nfs_setattrargs arg
= {
2545 .fh
= NFS_FH(inode
),
2548 .bitmask
= server
->attr_bitmask
,
2551 struct nfs_setattrres res
= {
2556 struct rpc_message msg
= {
2557 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETATTR
],
2562 unsigned long timestamp
= jiffies
;
2567 arg
.bitmask
= nfs4_bitmask(server
, ilabel
);
2569 arg
.bitmask
= nfs4_bitmask(server
, olabel
);
2571 nfs_fattr_init(fattr
);
2573 /* Servers should only apply open mode checks for file size changes */
2574 truncate
= (sattr
->ia_valid
& ATTR_SIZE
) ? true : false;
2575 fmode
= truncate
? FMODE_WRITE
: FMODE_READ
;
2577 if (nfs4_copy_delegation_stateid(&arg
.stateid
, inode
, fmode
)) {
2578 /* Use that stateid */
2579 } else if (truncate
&& state
!= NULL
) {
2580 struct nfs_lockowner lockowner
= {
2581 .l_owner
= current
->files
,
2582 .l_pid
= current
->tgid
,
2584 if (!nfs4_valid_open_stateid(state
))
2586 if (nfs4_select_rw_stateid(&arg
.stateid
, state
, FMODE_WRITE
,
2587 &lockowner
) == -EIO
)
2590 nfs4_stateid_copy(&arg
.stateid
, &zero_stateid
);
2592 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
2593 if (status
== 0 && state
!= NULL
)
2594 renew_lease(server
, timestamp
);
2598 static int nfs4_do_setattr(struct inode
*inode
, struct rpc_cred
*cred
,
2599 struct nfs_fattr
*fattr
, struct iattr
*sattr
,
2600 struct nfs4_state
*state
, struct nfs4_label
*ilabel
,
2601 struct nfs4_label
*olabel
)
2603 struct nfs_server
*server
= NFS_SERVER(inode
);
2604 struct nfs4_exception exception
= {
2610 err
= _nfs4_do_setattr(inode
, cred
, fattr
, sattr
, state
, ilabel
, olabel
);
2611 trace_nfs4_setattr(inode
, err
);
2613 case -NFS4ERR_OPENMODE
:
2614 if (!(sattr
->ia_valid
& ATTR_SIZE
)) {
2615 pr_warn_once("NFSv4: server %s is incorrectly "
2616 "applying open mode checks to "
2617 "a SETATTR that is not "
2618 "changing file size.\n",
2619 server
->nfs_client
->cl_hostname
);
2621 if (state
&& !(state
->state
& FMODE_WRITE
)) {
2623 if (sattr
->ia_valid
& ATTR_OPEN
)
2628 err
= nfs4_handle_exception(server
, err
, &exception
);
2629 } while (exception
.retry
);
2634 struct nfs4_closedata
{
2635 struct inode
*inode
;
2636 struct nfs4_state
*state
;
2637 struct nfs_closeargs arg
;
2638 struct nfs_closeres res
;
2639 struct nfs_fattr fattr
;
2640 unsigned long timestamp
;
2645 static void nfs4_free_closedata(void *data
)
2647 struct nfs4_closedata
*calldata
= data
;
2648 struct nfs4_state_owner
*sp
= calldata
->state
->owner
;
2649 struct super_block
*sb
= calldata
->state
->inode
->i_sb
;
2652 pnfs_roc_release(calldata
->state
->inode
);
2653 nfs4_put_open_state(calldata
->state
);
2654 nfs_free_seqid(calldata
->arg
.seqid
);
2655 nfs4_put_state_owner(sp
);
2656 nfs_sb_deactive(sb
);
2660 static void nfs4_close_done(struct rpc_task
*task
, void *data
)
2662 struct nfs4_closedata
*calldata
= data
;
2663 struct nfs4_state
*state
= calldata
->state
;
2664 struct nfs_server
*server
= NFS_SERVER(calldata
->inode
);
2665 nfs4_stateid
*res_stateid
= NULL
;
2667 dprintk("%s: begin!\n", __func__
);
2668 if (!nfs4_sequence_done(task
, &calldata
->res
.seq_res
))
2670 trace_nfs4_close(state
, &calldata
->arg
, &calldata
->res
, task
->tk_status
);
2671 /* hmm. we are done with the inode, and in the process of freeing
2672 * the state_owner. we keep this around to process errors
2674 switch (task
->tk_status
) {
2676 res_stateid
= &calldata
->res
.stateid
;
2678 pnfs_roc_set_barrier(state
->inode
,
2679 calldata
->roc_barrier
);
2680 renew_lease(server
, calldata
->timestamp
);
2682 case -NFS4ERR_ADMIN_REVOKED
:
2683 case -NFS4ERR_STALE_STATEID
:
2684 case -NFS4ERR_OLD_STATEID
:
2685 case -NFS4ERR_BAD_STATEID
:
2686 case -NFS4ERR_EXPIRED
:
2687 if (!nfs4_stateid_match(&calldata
->arg
.stateid
,
2688 &state
->open_stateid
)) {
2689 rpc_restart_call_prepare(task
);
2692 if (calldata
->arg
.fmode
== 0)
2695 if (nfs4_async_handle_error(task
, server
, state
, NULL
) == -EAGAIN
) {
2696 rpc_restart_call_prepare(task
);
2700 nfs_clear_open_stateid(state
, res_stateid
, calldata
->arg
.fmode
);
2702 nfs_release_seqid(calldata
->arg
.seqid
);
2703 nfs_refresh_inode(calldata
->inode
, calldata
->res
.fattr
);
2704 dprintk("%s: done, ret = %d!\n", __func__
, task
->tk_status
);
2707 static void nfs4_close_prepare(struct rpc_task
*task
, void *data
)
2709 struct nfs4_closedata
*calldata
= data
;
2710 struct nfs4_state
*state
= calldata
->state
;
2711 struct inode
*inode
= calldata
->inode
;
2712 bool is_rdonly
, is_wronly
, is_rdwr
;
2715 dprintk("%s: begin!\n", __func__
);
2716 if (nfs_wait_on_sequence(calldata
->arg
.seqid
, task
) != 0)
2719 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_DOWNGRADE
];
2720 spin_lock(&state
->owner
->so_lock
);
2721 is_rdwr
= test_bit(NFS_O_RDWR_STATE
, &state
->flags
);
2722 is_rdonly
= test_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
2723 is_wronly
= test_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
2724 nfs4_stateid_copy(&calldata
->arg
.stateid
, &state
->open_stateid
);
2725 /* Calculate the change in open mode */
2726 calldata
->arg
.fmode
= 0;
2727 if (state
->n_rdwr
== 0) {
2728 if (state
->n_rdonly
== 0)
2729 call_close
|= is_rdonly
;
2731 calldata
->arg
.fmode
|= FMODE_READ
;
2732 if (state
->n_wronly
== 0)
2733 call_close
|= is_wronly
;
2735 calldata
->arg
.fmode
|= FMODE_WRITE
;
2737 calldata
->arg
.fmode
|= FMODE_READ
|FMODE_WRITE
;
2739 if (calldata
->arg
.fmode
== 0)
2740 call_close
|= is_rdwr
;
2742 if (!nfs4_valid_open_stateid(state
))
2744 spin_unlock(&state
->owner
->so_lock
);
2747 /* Note: exit _without_ calling nfs4_close_done */
2751 if (calldata
->arg
.fmode
== 0)
2752 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CLOSE
];
2754 pnfs_roc_get_barrier(inode
, &calldata
->roc_barrier
);
2756 calldata
->arg
.share_access
=
2757 nfs4_map_atomic_open_share(NFS_SERVER(inode
),
2758 calldata
->arg
.fmode
, 0);
2760 nfs_fattr_init(calldata
->res
.fattr
);
2761 calldata
->timestamp
= jiffies
;
2762 if (nfs4_setup_sequence(NFS_SERVER(inode
),
2763 &calldata
->arg
.seq_args
,
2764 &calldata
->res
.seq_res
,
2766 nfs_release_seqid(calldata
->arg
.seqid
);
2767 dprintk("%s: done!\n", __func__
);
2770 task
->tk_action
= NULL
;
2772 nfs4_sequence_done(task
, &calldata
->res
.seq_res
);
2775 static const struct rpc_call_ops nfs4_close_ops
= {
2776 .rpc_call_prepare
= nfs4_close_prepare
,
2777 .rpc_call_done
= nfs4_close_done
,
2778 .rpc_release
= nfs4_free_closedata
,
2781 static bool nfs4_roc(struct inode
*inode
)
2783 if (!nfs_have_layout(inode
))
2785 return pnfs_roc(inode
);
2789 * It is possible for data to be read/written from a mem-mapped file
2790 * after the sys_close call (which hits the vfs layer as a flush).
2791 * This means that we can't safely call nfsv4 close on a file until
2792 * the inode is cleared. This in turn means that we are not good
2793 * NFSv4 citizens - we do not indicate to the server to update the file's
2794 * share state even when we are done with one of the three share
2795 * stateid's in the inode.
2797 * NOTE: Caller must be holding the sp->so_owner semaphore!
2799 int nfs4_do_close(struct nfs4_state
*state
, gfp_t gfp_mask
, int wait
)
2801 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
2802 struct nfs_seqid
*(*alloc_seqid
)(struct nfs_seqid_counter
*, gfp_t
);
2803 struct nfs4_closedata
*calldata
;
2804 struct nfs4_state_owner
*sp
= state
->owner
;
2805 struct rpc_task
*task
;
2806 struct rpc_message msg
= {
2807 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CLOSE
],
2808 .rpc_cred
= state
->owner
->so_cred
,
2810 struct rpc_task_setup task_setup_data
= {
2811 .rpc_client
= server
->client
,
2812 .rpc_message
= &msg
,
2813 .callback_ops
= &nfs4_close_ops
,
2814 .workqueue
= nfsiod_workqueue
,
2815 .flags
= RPC_TASK_ASYNC
,
2817 int status
= -ENOMEM
;
2819 nfs4_state_protect(server
->nfs_client
, NFS_SP4_MACH_CRED_CLEANUP
,
2820 &task_setup_data
.rpc_client
, &msg
);
2822 calldata
= kzalloc(sizeof(*calldata
), gfp_mask
);
2823 if (calldata
== NULL
)
2825 nfs4_init_sequence(&calldata
->arg
.seq_args
, &calldata
->res
.seq_res
, 1);
2826 calldata
->inode
= state
->inode
;
2827 calldata
->state
= state
;
2828 calldata
->arg
.fh
= NFS_FH(state
->inode
);
2829 /* Serialization for the sequence id */
2830 alloc_seqid
= server
->nfs_client
->cl_mvops
->alloc_seqid
;
2831 calldata
->arg
.seqid
= alloc_seqid(&state
->owner
->so_seqid
, gfp_mask
);
2832 if (IS_ERR(calldata
->arg
.seqid
))
2833 goto out_free_calldata
;
2834 calldata
->arg
.fmode
= 0;
2835 calldata
->arg
.bitmask
= server
->cache_consistency_bitmask
;
2836 calldata
->res
.fattr
= &calldata
->fattr
;
2837 calldata
->res
.seqid
= calldata
->arg
.seqid
;
2838 calldata
->res
.server
= server
;
2839 calldata
->roc
= nfs4_roc(state
->inode
);
2840 nfs_sb_active(calldata
->inode
->i_sb
);
2842 msg
.rpc_argp
= &calldata
->arg
;
2843 msg
.rpc_resp
= &calldata
->res
;
2844 task_setup_data
.callback_data
= calldata
;
2845 task
= rpc_run_task(&task_setup_data
);
2847 return PTR_ERR(task
);
2850 status
= rpc_wait_for_completion_task(task
);
2856 nfs4_put_open_state(state
);
2857 nfs4_put_state_owner(sp
);
2861 static struct inode
*
2862 nfs4_atomic_open(struct inode
*dir
, struct nfs_open_context
*ctx
,
2863 int open_flags
, struct iattr
*attr
, int *opened
)
2865 struct nfs4_state
*state
;
2866 struct nfs4_label l
= {0, 0, 0, NULL
}, *label
= NULL
;
2868 label
= nfs4_label_init_security(dir
, ctx
->dentry
, attr
, &l
);
2870 /* Protect against concurrent sillydeletes */
2871 state
= nfs4_do_open(dir
, ctx
, open_flags
, attr
, label
, opened
);
2873 nfs4_label_release_security(label
);
2876 return ERR_CAST(state
);
2877 return state
->inode
;
2880 static void nfs4_close_context(struct nfs_open_context
*ctx
, int is_sync
)
2882 if (ctx
->state
== NULL
)
2885 nfs4_close_sync(ctx
->state
, ctx
->mode
);
2887 nfs4_close_state(ctx
->state
, ctx
->mode
);
2890 #define FATTR4_WORD1_NFS40_MASK (2*FATTR4_WORD1_MOUNTED_ON_FILEID - 1UL)
2891 #define FATTR4_WORD2_NFS41_MASK (2*FATTR4_WORD2_SUPPATTR_EXCLCREAT - 1UL)
2892 #define FATTR4_WORD2_NFS42_MASK (2*FATTR4_WORD2_SECURITY_LABEL - 1UL)
2894 static int _nfs4_server_capabilities(struct nfs_server
*server
, struct nfs_fh
*fhandle
)
2896 u32 bitmask
[3] = {}, minorversion
= server
->nfs_client
->cl_minorversion
;
2897 struct nfs4_server_caps_arg args
= {
2901 struct nfs4_server_caps_res res
= {};
2902 struct rpc_message msg
= {
2903 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SERVER_CAPS
],
2909 bitmask
[0] = FATTR4_WORD0_SUPPORTED_ATTRS
|
2910 FATTR4_WORD0_FH_EXPIRE_TYPE
|
2911 FATTR4_WORD0_LINK_SUPPORT
|
2912 FATTR4_WORD0_SYMLINK_SUPPORT
|
2913 FATTR4_WORD0_ACLSUPPORT
;
2915 bitmask
[2] = FATTR4_WORD2_SUPPATTR_EXCLCREAT
;
2917 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
2919 /* Sanity check the server answers */
2920 switch (minorversion
) {
2922 res
.attr_bitmask
[1] &= FATTR4_WORD1_NFS40_MASK
;
2923 res
.attr_bitmask
[2] = 0;
2926 res
.attr_bitmask
[2] &= FATTR4_WORD2_NFS41_MASK
;
2929 res
.attr_bitmask
[2] &= FATTR4_WORD2_NFS42_MASK
;
2931 memcpy(server
->attr_bitmask
, res
.attr_bitmask
, sizeof(server
->attr_bitmask
));
2932 server
->caps
&= ~(NFS_CAP_ACLS
|NFS_CAP_HARDLINKS
|
2933 NFS_CAP_SYMLINKS
|NFS_CAP_FILEID
|
2934 NFS_CAP_MODE
|NFS_CAP_NLINK
|NFS_CAP_OWNER
|
2935 NFS_CAP_OWNER_GROUP
|NFS_CAP_ATIME
|
2936 NFS_CAP_CTIME
|NFS_CAP_MTIME
|
2937 NFS_CAP_SECURITY_LABEL
);
2938 if (res
.attr_bitmask
[0] & FATTR4_WORD0_ACL
&&
2939 res
.acl_bitmask
& ACL4_SUPPORT_ALLOW_ACL
)
2940 server
->caps
|= NFS_CAP_ACLS
;
2941 if (res
.has_links
!= 0)
2942 server
->caps
|= NFS_CAP_HARDLINKS
;
2943 if (res
.has_symlinks
!= 0)
2944 server
->caps
|= NFS_CAP_SYMLINKS
;
2945 if (res
.attr_bitmask
[0] & FATTR4_WORD0_FILEID
)
2946 server
->caps
|= NFS_CAP_FILEID
;
2947 if (res
.attr_bitmask
[1] & FATTR4_WORD1_MODE
)
2948 server
->caps
|= NFS_CAP_MODE
;
2949 if (res
.attr_bitmask
[1] & FATTR4_WORD1_NUMLINKS
)
2950 server
->caps
|= NFS_CAP_NLINK
;
2951 if (res
.attr_bitmask
[1] & FATTR4_WORD1_OWNER
)
2952 server
->caps
|= NFS_CAP_OWNER
;
2953 if (res
.attr_bitmask
[1] & FATTR4_WORD1_OWNER_GROUP
)
2954 server
->caps
|= NFS_CAP_OWNER_GROUP
;
2955 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_ACCESS
)
2956 server
->caps
|= NFS_CAP_ATIME
;
2957 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_METADATA
)
2958 server
->caps
|= NFS_CAP_CTIME
;
2959 if (res
.attr_bitmask
[1] & FATTR4_WORD1_TIME_MODIFY
)
2960 server
->caps
|= NFS_CAP_MTIME
;
2961 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
2962 if (res
.attr_bitmask
[2] & FATTR4_WORD2_SECURITY_LABEL
)
2963 server
->caps
|= NFS_CAP_SECURITY_LABEL
;
2965 memcpy(server
->attr_bitmask_nl
, res
.attr_bitmask
,
2966 sizeof(server
->attr_bitmask
));
2967 server
->attr_bitmask_nl
[2] &= ~FATTR4_WORD2_SECURITY_LABEL
;
2969 memcpy(server
->cache_consistency_bitmask
, res
.attr_bitmask
, sizeof(server
->cache_consistency_bitmask
));
2970 server
->cache_consistency_bitmask
[0] &= FATTR4_WORD0_CHANGE
|FATTR4_WORD0_SIZE
;
2971 server
->cache_consistency_bitmask
[1] &= FATTR4_WORD1_TIME_METADATA
|FATTR4_WORD1_TIME_MODIFY
;
2972 server
->cache_consistency_bitmask
[2] = 0;
2973 memcpy(server
->exclcreat_bitmask
, res
.exclcreat_bitmask
,
2974 sizeof(server
->exclcreat_bitmask
));
2975 server
->acl_bitmask
= res
.acl_bitmask
;
2976 server
->fh_expire_type
= res
.fh_expire_type
;
2982 int nfs4_server_capabilities(struct nfs_server
*server
, struct nfs_fh
*fhandle
)
2984 struct nfs4_exception exception
= { };
2987 err
= nfs4_handle_exception(server
,
2988 _nfs4_server_capabilities(server
, fhandle
),
2990 } while (exception
.retry
);
2994 static int _nfs4_lookup_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2995 struct nfs_fsinfo
*info
)
2998 struct nfs4_lookup_root_arg args
= {
3001 struct nfs4_lookup_res res
= {
3003 .fattr
= info
->fattr
,
3006 struct rpc_message msg
= {
3007 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOOKUP_ROOT
],
3012 bitmask
[0] = nfs4_fattr_bitmap
[0];
3013 bitmask
[1] = nfs4_fattr_bitmap
[1];
3015 * Process the label in the upcoming getfattr
3017 bitmask
[2] = nfs4_fattr_bitmap
[2] & ~FATTR4_WORD2_SECURITY_LABEL
;
3019 nfs_fattr_init(info
->fattr
);
3020 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3023 static int nfs4_lookup_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3024 struct nfs_fsinfo
*info
)
3026 struct nfs4_exception exception
= { };
3029 err
= _nfs4_lookup_root(server
, fhandle
, info
);
3030 trace_nfs4_lookup_root(server
, fhandle
, info
->fattr
, err
);
3033 case -NFS4ERR_WRONGSEC
:
3036 err
= nfs4_handle_exception(server
, err
, &exception
);
3038 } while (exception
.retry
);
3043 static int nfs4_lookup_root_sec(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3044 struct nfs_fsinfo
*info
, rpc_authflavor_t flavor
)
3046 struct rpc_auth_create_args auth_args
= {
3047 .pseudoflavor
= flavor
,
3049 struct rpc_auth
*auth
;
3052 auth
= rpcauth_create(&auth_args
, server
->client
);
3057 ret
= nfs4_lookup_root(server
, fhandle
, info
);
3063 * Retry pseudoroot lookup with various security flavors. We do this when:
3065 * NFSv4.0: the PUTROOTFH operation returns NFS4ERR_WRONGSEC
3066 * NFSv4.1: the server does not support the SECINFO_NO_NAME operation
3068 * Returns zero on success, or a negative NFS4ERR value, or a
3069 * negative errno value.
3071 static int nfs4_find_root_sec(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3072 struct nfs_fsinfo
*info
)
3074 /* Per 3530bis 15.33.5 */
3075 static const rpc_authflavor_t flav_array
[] = {
3079 RPC_AUTH_UNIX
, /* courtesy */
3082 int status
= -EPERM
;
3085 if (server
->auth_info
.flavor_len
> 0) {
3086 /* try each flavor specified by user */
3087 for (i
= 0; i
< server
->auth_info
.flavor_len
; i
++) {
3088 status
= nfs4_lookup_root_sec(server
, fhandle
, info
,
3089 server
->auth_info
.flavors
[i
]);
3090 if (status
== -NFS4ERR_WRONGSEC
|| status
== -EACCES
)
3095 /* no flavors specified by user, try default list */
3096 for (i
= 0; i
< ARRAY_SIZE(flav_array
); i
++) {
3097 status
= nfs4_lookup_root_sec(server
, fhandle
, info
,
3099 if (status
== -NFS4ERR_WRONGSEC
|| status
== -EACCES
)
3106 * -EACCESS could mean that the user doesn't have correct permissions
3107 * to access the mount. It could also mean that we tried to mount
3108 * with a gss auth flavor, but rpc.gssd isn't running. Either way,
3109 * existing mount programs don't handle -EACCES very well so it should
3110 * be mapped to -EPERM instead.
3112 if (status
== -EACCES
)
3117 static int nfs4_do_find_root_sec(struct nfs_server
*server
,
3118 struct nfs_fh
*fhandle
, struct nfs_fsinfo
*info
)
3120 int mv
= server
->nfs_client
->cl_minorversion
;
3121 return nfs_v4_minor_ops
[mv
]->find_root_sec(server
, fhandle
, info
);
3125 * nfs4_proc_get_rootfh - get file handle for server's pseudoroot
3126 * @server: initialized nfs_server handle
3127 * @fhandle: we fill in the pseudo-fs root file handle
3128 * @info: we fill in an FSINFO struct
3129 * @auth_probe: probe the auth flavours
3131 * Returns zero on success, or a negative errno.
3133 int nfs4_proc_get_rootfh(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3134 struct nfs_fsinfo
*info
,
3140 status
= nfs4_lookup_root(server
, fhandle
, info
);
3142 if (auth_probe
|| status
== NFS4ERR_WRONGSEC
)
3143 status
= nfs4_do_find_root_sec(server
, fhandle
, info
);
3146 status
= nfs4_server_capabilities(server
, fhandle
);
3148 status
= nfs4_do_fsinfo(server
, fhandle
, info
);
3150 return nfs4_map_errors(status
);
3153 static int nfs4_proc_get_root(struct nfs_server
*server
, struct nfs_fh
*mntfh
,
3154 struct nfs_fsinfo
*info
)
3157 struct nfs_fattr
*fattr
= info
->fattr
;
3158 struct nfs4_label
*label
= NULL
;
3160 error
= nfs4_server_capabilities(server
, mntfh
);
3162 dprintk("nfs4_get_root: getcaps error = %d\n", -error
);
3166 label
= nfs4_label_alloc(server
, GFP_KERNEL
);
3168 return PTR_ERR(label
);
3170 error
= nfs4_proc_getattr(server
, mntfh
, fattr
, label
);
3172 dprintk("nfs4_get_root: getattr error = %d\n", -error
);
3173 goto err_free_label
;
3176 if (fattr
->valid
& NFS_ATTR_FATTR_FSID
&&
3177 !nfs_fsid_equal(&server
->fsid
, &fattr
->fsid
))
3178 memcpy(&server
->fsid
, &fattr
->fsid
, sizeof(server
->fsid
));
3181 nfs4_label_free(label
);
3187 * Get locations and (maybe) other attributes of a referral.
3188 * Note that we'll actually follow the referral later when
3189 * we detect fsid mismatch in inode revalidation
3191 static int nfs4_get_referral(struct rpc_clnt
*client
, struct inode
*dir
,
3192 const struct qstr
*name
, struct nfs_fattr
*fattr
,
3193 struct nfs_fh
*fhandle
)
3195 int status
= -ENOMEM
;
3196 struct page
*page
= NULL
;
3197 struct nfs4_fs_locations
*locations
= NULL
;
3199 page
= alloc_page(GFP_KERNEL
);
3202 locations
= kmalloc(sizeof(struct nfs4_fs_locations
), GFP_KERNEL
);
3203 if (locations
== NULL
)
3206 status
= nfs4_proc_fs_locations(client
, dir
, name
, locations
, page
);
3211 * If the fsid didn't change, this is a migration event, not a
3212 * referral. Cause us to drop into the exception handler, which
3213 * will kick off migration recovery.
3215 if (nfs_fsid_equal(&NFS_SERVER(dir
)->fsid
, &locations
->fattr
.fsid
)) {
3216 dprintk("%s: server did not return a different fsid for"
3217 " a referral at %s\n", __func__
, name
->name
);
3218 status
= -NFS4ERR_MOVED
;
3221 /* Fixup attributes for the nfs_lookup() call to nfs_fhget() */
3222 nfs_fixup_referral_attributes(&locations
->fattr
);
3224 /* replace the lookup nfs_fattr with the locations nfs_fattr */
3225 memcpy(fattr
, &locations
->fattr
, sizeof(struct nfs_fattr
));
3226 memset(fhandle
, 0, sizeof(struct nfs_fh
));
3234 static int _nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3235 struct nfs_fattr
*fattr
, struct nfs4_label
*label
)
3237 struct nfs4_getattr_arg args
= {
3239 .bitmask
= server
->attr_bitmask
,
3241 struct nfs4_getattr_res res
= {
3246 struct rpc_message msg
= {
3247 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETATTR
],
3252 args
.bitmask
= nfs4_bitmask(server
, label
);
3254 nfs_fattr_init(fattr
);
3255 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3258 static int nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
3259 struct nfs_fattr
*fattr
, struct nfs4_label
*label
)
3261 struct nfs4_exception exception
= { };
3264 err
= _nfs4_proc_getattr(server
, fhandle
, fattr
, label
);
3265 trace_nfs4_getattr(server
, fhandle
, fattr
, err
);
3266 err
= nfs4_handle_exception(server
, err
,
3268 } while (exception
.retry
);
3273 * The file is not closed if it is opened due to the a request to change
3274 * the size of the file. The open call will not be needed once the
3275 * VFS layer lookup-intents are implemented.
3277 * Close is called when the inode is destroyed.
3278 * If we haven't opened the file for O_WRONLY, we
3279 * need to in the size_change case to obtain a stateid.
3282 * Because OPEN is always done by name in nfsv4, it is
3283 * possible that we opened a different file by the same
3284 * name. We can recognize this race condition, but we
3285 * can't do anything about it besides returning an error.
3287 * This will be fixed with VFS changes (lookup-intent).
3290 nfs4_proc_setattr(struct dentry
*dentry
, struct nfs_fattr
*fattr
,
3291 struct iattr
*sattr
)
3293 struct inode
*inode
= d_inode(dentry
);
3294 struct rpc_cred
*cred
= NULL
;
3295 struct nfs4_state
*state
= NULL
;
3296 struct nfs4_label
*label
= NULL
;
3299 if (pnfs_ld_layoutret_on_setattr(inode
) &&
3300 sattr
->ia_valid
& ATTR_SIZE
&&
3301 sattr
->ia_size
< i_size_read(inode
))
3302 pnfs_commit_and_return_layout(inode
);
3304 nfs_fattr_init(fattr
);
3306 /* Deal with open(O_TRUNC) */
3307 if (sattr
->ia_valid
& ATTR_OPEN
)
3308 sattr
->ia_valid
&= ~(ATTR_MTIME
|ATTR_CTIME
);
3310 /* Optimization: if the end result is no change, don't RPC */
3311 if ((sattr
->ia_valid
& ~(ATTR_FILE
|ATTR_OPEN
)) == 0)
3314 /* Search for an existing open(O_WRITE) file */
3315 if (sattr
->ia_valid
& ATTR_FILE
) {
3316 struct nfs_open_context
*ctx
;
3318 ctx
= nfs_file_open_context(sattr
->ia_file
);
3325 label
= nfs4_label_alloc(NFS_SERVER(inode
), GFP_KERNEL
);
3327 return PTR_ERR(label
);
3329 status
= nfs4_do_setattr(inode
, cred
, fattr
, sattr
, state
, NULL
, label
);
3331 nfs_setattr_update_inode(inode
, sattr
, fattr
);
3332 nfs_setsecurity(inode
, fattr
, label
);
3334 nfs4_label_free(label
);
3338 static int _nfs4_proc_lookup(struct rpc_clnt
*clnt
, struct inode
*dir
,
3339 const struct qstr
*name
, struct nfs_fh
*fhandle
,
3340 struct nfs_fattr
*fattr
, struct nfs4_label
*label
)
3342 struct nfs_server
*server
= NFS_SERVER(dir
);
3344 struct nfs4_lookup_arg args
= {
3345 .bitmask
= server
->attr_bitmask
,
3346 .dir_fh
= NFS_FH(dir
),
3349 struct nfs4_lookup_res res
= {
3355 struct rpc_message msg
= {
3356 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOOKUP
],
3361 args
.bitmask
= nfs4_bitmask(server
, label
);
3363 nfs_fattr_init(fattr
);
3365 dprintk("NFS call lookup %s\n", name
->name
);
3366 status
= nfs4_call_sync(clnt
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3367 dprintk("NFS reply lookup: %d\n", status
);
3371 static void nfs_fixup_secinfo_attributes(struct nfs_fattr
*fattr
)
3373 fattr
->valid
|= NFS_ATTR_FATTR_TYPE
| NFS_ATTR_FATTR_MODE
|
3374 NFS_ATTR_FATTR_NLINK
| NFS_ATTR_FATTR_MOUNTPOINT
;
3375 fattr
->mode
= S_IFDIR
| S_IRUGO
| S_IXUGO
;
3379 static int nfs4_proc_lookup_common(struct rpc_clnt
**clnt
, struct inode
*dir
,
3380 struct qstr
*name
, struct nfs_fh
*fhandle
,
3381 struct nfs_fattr
*fattr
, struct nfs4_label
*label
)
3383 struct nfs4_exception exception
= { };
3384 struct rpc_clnt
*client
= *clnt
;
3387 err
= _nfs4_proc_lookup(client
, dir
, name
, fhandle
, fattr
, label
);
3388 trace_nfs4_lookup(dir
, name
, err
);
3390 case -NFS4ERR_BADNAME
:
3393 case -NFS4ERR_MOVED
:
3394 err
= nfs4_get_referral(client
, dir
, name
, fattr
, fhandle
);
3395 if (err
== -NFS4ERR_MOVED
)
3396 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
, &exception
);
3398 case -NFS4ERR_WRONGSEC
:
3400 if (client
!= *clnt
)
3402 client
= nfs4_negotiate_security(client
, dir
, name
);
3404 return PTR_ERR(client
);
3406 exception
.retry
= 1;
3409 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
, &exception
);
3411 } while (exception
.retry
);
3416 else if (client
!= *clnt
)
3417 rpc_shutdown_client(client
);
3422 static int nfs4_proc_lookup(struct inode
*dir
, struct qstr
*name
,
3423 struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
,
3424 struct nfs4_label
*label
)
3427 struct rpc_clnt
*client
= NFS_CLIENT(dir
);
3429 status
= nfs4_proc_lookup_common(&client
, dir
, name
, fhandle
, fattr
, label
);
3430 if (client
!= NFS_CLIENT(dir
)) {
3431 rpc_shutdown_client(client
);
3432 nfs_fixup_secinfo_attributes(fattr
);
3438 nfs4_proc_lookup_mountpoint(struct inode
*dir
, struct qstr
*name
,
3439 struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
3441 struct rpc_clnt
*client
= NFS_CLIENT(dir
);
3444 status
= nfs4_proc_lookup_common(&client
, dir
, name
, fhandle
, fattr
, NULL
);
3446 return ERR_PTR(status
);
3447 return (client
== NFS_CLIENT(dir
)) ? rpc_clone_client(client
) : client
;
3450 static int _nfs4_proc_access(struct inode
*inode
, struct nfs_access_entry
*entry
)
3452 struct nfs_server
*server
= NFS_SERVER(inode
);
3453 struct nfs4_accessargs args
= {
3454 .fh
= NFS_FH(inode
),
3455 .bitmask
= server
->cache_consistency_bitmask
,
3457 struct nfs4_accessres res
= {
3460 struct rpc_message msg
= {
3461 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_ACCESS
],
3464 .rpc_cred
= entry
->cred
,
3466 int mode
= entry
->mask
;
3470 * Determine which access bits we want to ask for...
3472 if (mode
& MAY_READ
)
3473 args
.access
|= NFS4_ACCESS_READ
;
3474 if (S_ISDIR(inode
->i_mode
)) {
3475 if (mode
& MAY_WRITE
)
3476 args
.access
|= NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
| NFS4_ACCESS_DELETE
;
3477 if (mode
& MAY_EXEC
)
3478 args
.access
|= NFS4_ACCESS_LOOKUP
;
3480 if (mode
& MAY_WRITE
)
3481 args
.access
|= NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
;
3482 if (mode
& MAY_EXEC
)
3483 args
.access
|= NFS4_ACCESS_EXECUTE
;
3486 res
.fattr
= nfs_alloc_fattr();
3487 if (res
.fattr
== NULL
)
3490 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3492 nfs_access_set_mask(entry
, res
.access
);
3493 nfs_refresh_inode(inode
, res
.fattr
);
3495 nfs_free_fattr(res
.fattr
);
3499 static int nfs4_proc_access(struct inode
*inode
, struct nfs_access_entry
*entry
)
3501 struct nfs4_exception exception
= { };
3504 err
= _nfs4_proc_access(inode
, entry
);
3505 trace_nfs4_access(inode
, err
);
3506 err
= nfs4_handle_exception(NFS_SERVER(inode
), err
,
3508 } while (exception
.retry
);
3513 * TODO: For the time being, we don't try to get any attributes
3514 * along with any of the zero-copy operations READ, READDIR,
3517 * In the case of the first three, we want to put the GETATTR
3518 * after the read-type operation -- this is because it is hard
3519 * to predict the length of a GETATTR response in v4, and thus
3520 * align the READ data correctly. This means that the GETATTR
3521 * may end up partially falling into the page cache, and we should
3522 * shift it into the 'tail' of the xdr_buf before processing.
3523 * To do this efficiently, we need to know the total length
3524 * of data received, which doesn't seem to be available outside
3527 * In the case of WRITE, we also want to put the GETATTR after
3528 * the operation -- in this case because we want to make sure
3529 * we get the post-operation mtime and size.
3531 * Both of these changes to the XDR layer would in fact be quite
3532 * minor, but I decided to leave them for a subsequent patch.
3534 static int _nfs4_proc_readlink(struct inode
*inode
, struct page
*page
,
3535 unsigned int pgbase
, unsigned int pglen
)
3537 struct nfs4_readlink args
= {
3538 .fh
= NFS_FH(inode
),
3543 struct nfs4_readlink_res res
;
3544 struct rpc_message msg
= {
3545 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READLINK
],
3550 return nfs4_call_sync(NFS_SERVER(inode
)->client
, NFS_SERVER(inode
), &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3553 static int nfs4_proc_readlink(struct inode
*inode
, struct page
*page
,
3554 unsigned int pgbase
, unsigned int pglen
)
3556 struct nfs4_exception exception
= { };
3559 err
= _nfs4_proc_readlink(inode
, page
, pgbase
, pglen
);
3560 trace_nfs4_readlink(inode
, err
);
3561 err
= nfs4_handle_exception(NFS_SERVER(inode
), err
,
3563 } while (exception
.retry
);
3568 * This is just for mknod. open(O_CREAT) will always do ->open_context().
3571 nfs4_proc_create(struct inode
*dir
, struct dentry
*dentry
, struct iattr
*sattr
,
3574 struct nfs4_label l
, *ilabel
= NULL
;
3575 struct nfs_open_context
*ctx
;
3576 struct nfs4_state
*state
;
3579 ctx
= alloc_nfs_open_context(dentry
, FMODE_READ
);
3581 return PTR_ERR(ctx
);
3583 ilabel
= nfs4_label_init_security(dir
, dentry
, sattr
, &l
);
3585 sattr
->ia_mode
&= ~current_umask();
3586 state
= nfs4_do_open(dir
, ctx
, flags
, sattr
, ilabel
, NULL
);
3587 if (IS_ERR(state
)) {
3588 status
= PTR_ERR(state
);
3592 nfs4_label_release_security(ilabel
);
3593 put_nfs_open_context(ctx
);
3597 static int _nfs4_proc_remove(struct inode
*dir
, struct qstr
*name
)
3599 struct nfs_server
*server
= NFS_SERVER(dir
);
3600 struct nfs_removeargs args
= {
3604 struct nfs_removeres res
= {
3607 struct rpc_message msg
= {
3608 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_REMOVE
],
3614 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 1);
3616 update_changeattr(dir
, &res
.cinfo
);
3620 static int nfs4_proc_remove(struct inode
*dir
, struct qstr
*name
)
3622 struct nfs4_exception exception
= { };
3625 err
= _nfs4_proc_remove(dir
, name
);
3626 trace_nfs4_remove(dir
, name
, err
);
3627 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
3629 } while (exception
.retry
);
3633 static void nfs4_proc_unlink_setup(struct rpc_message
*msg
, struct inode
*dir
)
3635 struct nfs_server
*server
= NFS_SERVER(dir
);
3636 struct nfs_removeargs
*args
= msg
->rpc_argp
;
3637 struct nfs_removeres
*res
= msg
->rpc_resp
;
3639 res
->server
= server
;
3640 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_REMOVE
];
3641 nfs4_init_sequence(&args
->seq_args
, &res
->seq_res
, 1);
3643 nfs_fattr_init(res
->dir_attr
);
3646 static void nfs4_proc_unlink_rpc_prepare(struct rpc_task
*task
, struct nfs_unlinkdata
*data
)
3648 nfs4_setup_sequence(NFS_SERVER(data
->dir
),
3649 &data
->args
.seq_args
,
3654 static int nfs4_proc_unlink_done(struct rpc_task
*task
, struct inode
*dir
)
3656 struct nfs_unlinkdata
*data
= task
->tk_calldata
;
3657 struct nfs_removeres
*res
= &data
->res
;
3659 if (!nfs4_sequence_done(task
, &res
->seq_res
))
3661 if (nfs4_async_handle_error(task
, res
->server
, NULL
,
3662 &data
->timeout
) == -EAGAIN
)
3664 update_changeattr(dir
, &res
->cinfo
);
3668 static void nfs4_proc_rename_setup(struct rpc_message
*msg
, struct inode
*dir
)
3670 struct nfs_server
*server
= NFS_SERVER(dir
);
3671 struct nfs_renameargs
*arg
= msg
->rpc_argp
;
3672 struct nfs_renameres
*res
= msg
->rpc_resp
;
3674 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENAME
];
3675 res
->server
= server
;
3676 nfs4_init_sequence(&arg
->seq_args
, &res
->seq_res
, 1);
3679 static void nfs4_proc_rename_rpc_prepare(struct rpc_task
*task
, struct nfs_renamedata
*data
)
3681 nfs4_setup_sequence(NFS_SERVER(data
->old_dir
),
3682 &data
->args
.seq_args
,
3687 static int nfs4_proc_rename_done(struct rpc_task
*task
, struct inode
*old_dir
,
3688 struct inode
*new_dir
)
3690 struct nfs_renamedata
*data
= task
->tk_calldata
;
3691 struct nfs_renameres
*res
= &data
->res
;
3693 if (!nfs4_sequence_done(task
, &res
->seq_res
))
3695 if (nfs4_async_handle_error(task
, res
->server
, NULL
, &data
->timeout
) == -EAGAIN
)
3698 update_changeattr(old_dir
, &res
->old_cinfo
);
3699 update_changeattr(new_dir
, &res
->new_cinfo
);
3703 static int _nfs4_proc_link(struct inode
*inode
, struct inode
*dir
, struct qstr
*name
)
3705 struct nfs_server
*server
= NFS_SERVER(inode
);
3706 struct nfs4_link_arg arg
= {
3707 .fh
= NFS_FH(inode
),
3708 .dir_fh
= NFS_FH(dir
),
3710 .bitmask
= server
->attr_bitmask
,
3712 struct nfs4_link_res res
= {
3716 struct rpc_message msg
= {
3717 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LINK
],
3721 int status
= -ENOMEM
;
3723 res
.fattr
= nfs_alloc_fattr();
3724 if (res
.fattr
== NULL
)
3727 res
.label
= nfs4_label_alloc(server
, GFP_KERNEL
);
3728 if (IS_ERR(res
.label
)) {
3729 status
= PTR_ERR(res
.label
);
3732 arg
.bitmask
= nfs4_bitmask(server
, res
.label
);
3734 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
3736 update_changeattr(dir
, &res
.cinfo
);
3737 status
= nfs_post_op_update_inode(inode
, res
.fattr
);
3739 nfs_setsecurity(inode
, res
.fattr
, res
.label
);
3743 nfs4_label_free(res
.label
);
3746 nfs_free_fattr(res
.fattr
);
3750 static int nfs4_proc_link(struct inode
*inode
, struct inode
*dir
, struct qstr
*name
)
3752 struct nfs4_exception exception
= { };
3755 err
= nfs4_handle_exception(NFS_SERVER(inode
),
3756 _nfs4_proc_link(inode
, dir
, name
),
3758 } while (exception
.retry
);
3762 struct nfs4_createdata
{
3763 struct rpc_message msg
;
3764 struct nfs4_create_arg arg
;
3765 struct nfs4_create_res res
;
3767 struct nfs_fattr fattr
;
3768 struct nfs4_label
*label
;
3771 static struct nfs4_createdata
*nfs4_alloc_createdata(struct inode
*dir
,
3772 struct qstr
*name
, struct iattr
*sattr
, u32 ftype
)
3774 struct nfs4_createdata
*data
;
3776 data
= kzalloc(sizeof(*data
), GFP_KERNEL
);
3778 struct nfs_server
*server
= NFS_SERVER(dir
);
3780 data
->label
= nfs4_label_alloc(server
, GFP_KERNEL
);
3781 if (IS_ERR(data
->label
))
3784 data
->msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CREATE
];
3785 data
->msg
.rpc_argp
= &data
->arg
;
3786 data
->msg
.rpc_resp
= &data
->res
;
3787 data
->arg
.dir_fh
= NFS_FH(dir
);
3788 data
->arg
.server
= server
;
3789 data
->arg
.name
= name
;
3790 data
->arg
.attrs
= sattr
;
3791 data
->arg
.ftype
= ftype
;
3792 data
->arg
.bitmask
= nfs4_bitmask(server
, data
->label
);
3793 data
->res
.server
= server
;
3794 data
->res
.fh
= &data
->fh
;
3795 data
->res
.fattr
= &data
->fattr
;
3796 data
->res
.label
= data
->label
;
3797 nfs_fattr_init(data
->res
.fattr
);
3805 static int nfs4_do_create(struct inode
*dir
, struct dentry
*dentry
, struct nfs4_createdata
*data
)
3807 int status
= nfs4_call_sync(NFS_SERVER(dir
)->client
, NFS_SERVER(dir
), &data
->msg
,
3808 &data
->arg
.seq_args
, &data
->res
.seq_res
, 1);
3810 update_changeattr(dir
, &data
->res
.dir_cinfo
);
3811 status
= nfs_instantiate(dentry
, data
->res
.fh
, data
->res
.fattr
, data
->res
.label
);
3816 static void nfs4_free_createdata(struct nfs4_createdata
*data
)
3818 nfs4_label_free(data
->label
);
3822 static int _nfs4_proc_symlink(struct inode
*dir
, struct dentry
*dentry
,
3823 struct page
*page
, unsigned int len
, struct iattr
*sattr
,
3824 struct nfs4_label
*label
)
3826 struct nfs4_createdata
*data
;
3827 int status
= -ENAMETOOLONG
;
3829 if (len
> NFS4_MAXPATHLEN
)
3833 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4LNK
);
3837 data
->msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SYMLINK
];
3838 data
->arg
.u
.symlink
.pages
= &page
;
3839 data
->arg
.u
.symlink
.len
= len
;
3840 data
->arg
.label
= label
;
3842 status
= nfs4_do_create(dir
, dentry
, data
);
3844 nfs4_free_createdata(data
);
3849 static int nfs4_proc_symlink(struct inode
*dir
, struct dentry
*dentry
,
3850 struct page
*page
, unsigned int len
, struct iattr
*sattr
)
3852 struct nfs4_exception exception
= { };
3853 struct nfs4_label l
, *label
= NULL
;
3856 label
= nfs4_label_init_security(dir
, dentry
, sattr
, &l
);
3859 err
= _nfs4_proc_symlink(dir
, dentry
, page
, len
, sattr
, label
);
3860 trace_nfs4_symlink(dir
, &dentry
->d_name
, err
);
3861 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
3863 } while (exception
.retry
);
3865 nfs4_label_release_security(label
);
3869 static int _nfs4_proc_mkdir(struct inode
*dir
, struct dentry
*dentry
,
3870 struct iattr
*sattr
, struct nfs4_label
*label
)
3872 struct nfs4_createdata
*data
;
3873 int status
= -ENOMEM
;
3875 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4DIR
);
3879 data
->arg
.label
= label
;
3880 status
= nfs4_do_create(dir
, dentry
, data
);
3882 nfs4_free_createdata(data
);
3887 static int nfs4_proc_mkdir(struct inode
*dir
, struct dentry
*dentry
,
3888 struct iattr
*sattr
)
3890 struct nfs4_exception exception
= { };
3891 struct nfs4_label l
, *label
= NULL
;
3894 label
= nfs4_label_init_security(dir
, dentry
, sattr
, &l
);
3896 sattr
->ia_mode
&= ~current_umask();
3898 err
= _nfs4_proc_mkdir(dir
, dentry
, sattr
, label
);
3899 trace_nfs4_mkdir(dir
, &dentry
->d_name
, err
);
3900 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
3902 } while (exception
.retry
);
3903 nfs4_label_release_security(label
);
3908 static int _nfs4_proc_readdir(struct dentry
*dentry
, struct rpc_cred
*cred
,
3909 u64 cookie
, struct page
**pages
, unsigned int count
, int plus
)
3911 struct inode
*dir
= d_inode(dentry
);
3912 struct nfs4_readdir_arg args
= {
3917 .bitmask
= NFS_SERVER(d_inode(dentry
))->attr_bitmask
,
3920 struct nfs4_readdir_res res
;
3921 struct rpc_message msg
= {
3922 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READDIR
],
3929 dprintk("%s: dentry = %pd2, cookie = %Lu\n", __func__
,
3931 (unsigned long long)cookie
);
3932 nfs4_setup_readdir(cookie
, NFS_I(dir
)->cookieverf
, dentry
, &args
);
3933 res
.pgbase
= args
.pgbase
;
3934 status
= nfs4_call_sync(NFS_SERVER(dir
)->client
, NFS_SERVER(dir
), &msg
, &args
.seq_args
, &res
.seq_res
, 0);
3936 memcpy(NFS_I(dir
)->cookieverf
, res
.verifier
.data
, NFS4_VERIFIER_SIZE
);
3937 status
+= args
.pgbase
;
3940 nfs_invalidate_atime(dir
);
3942 dprintk("%s: returns %d\n", __func__
, status
);
3946 static int nfs4_proc_readdir(struct dentry
*dentry
, struct rpc_cred
*cred
,
3947 u64 cookie
, struct page
**pages
, unsigned int count
, int plus
)
3949 struct nfs4_exception exception
= { };
3952 err
= _nfs4_proc_readdir(dentry
, cred
, cookie
,
3953 pages
, count
, plus
);
3954 trace_nfs4_readdir(d_inode(dentry
), err
);
3955 err
= nfs4_handle_exception(NFS_SERVER(d_inode(dentry
)), err
,
3957 } while (exception
.retry
);
3961 static int _nfs4_proc_mknod(struct inode
*dir
, struct dentry
*dentry
,
3962 struct iattr
*sattr
, struct nfs4_label
*label
, dev_t rdev
)
3964 struct nfs4_createdata
*data
;
3965 int mode
= sattr
->ia_mode
;
3966 int status
= -ENOMEM
;
3968 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4SOCK
);
3973 data
->arg
.ftype
= NF4FIFO
;
3974 else if (S_ISBLK(mode
)) {
3975 data
->arg
.ftype
= NF4BLK
;
3976 data
->arg
.u
.device
.specdata1
= MAJOR(rdev
);
3977 data
->arg
.u
.device
.specdata2
= MINOR(rdev
);
3979 else if (S_ISCHR(mode
)) {
3980 data
->arg
.ftype
= NF4CHR
;
3981 data
->arg
.u
.device
.specdata1
= MAJOR(rdev
);
3982 data
->arg
.u
.device
.specdata2
= MINOR(rdev
);
3983 } else if (!S_ISSOCK(mode
)) {
3988 data
->arg
.label
= label
;
3989 status
= nfs4_do_create(dir
, dentry
, data
);
3991 nfs4_free_createdata(data
);
3996 static int nfs4_proc_mknod(struct inode
*dir
, struct dentry
*dentry
,
3997 struct iattr
*sattr
, dev_t rdev
)
3999 struct nfs4_exception exception
= { };
4000 struct nfs4_label l
, *label
= NULL
;
4003 label
= nfs4_label_init_security(dir
, dentry
, sattr
, &l
);
4005 sattr
->ia_mode
&= ~current_umask();
4007 err
= _nfs4_proc_mknod(dir
, dentry
, sattr
, label
, rdev
);
4008 trace_nfs4_mknod(dir
, &dentry
->d_name
, err
);
4009 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
4011 } while (exception
.retry
);
4013 nfs4_label_release_security(label
);
4018 static int _nfs4_proc_statfs(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
4019 struct nfs_fsstat
*fsstat
)
4021 struct nfs4_statfs_arg args
= {
4023 .bitmask
= server
->attr_bitmask
,
4025 struct nfs4_statfs_res res
= {
4028 struct rpc_message msg
= {
4029 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_STATFS
],
4034 nfs_fattr_init(fsstat
->fattr
);
4035 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
4038 static int nfs4_proc_statfs(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsstat
*fsstat
)
4040 struct nfs4_exception exception
= { };
4043 err
= nfs4_handle_exception(server
,
4044 _nfs4_proc_statfs(server
, fhandle
, fsstat
),
4046 } while (exception
.retry
);
4050 static int _nfs4_do_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
4051 struct nfs_fsinfo
*fsinfo
)
4053 struct nfs4_fsinfo_arg args
= {
4055 .bitmask
= server
->attr_bitmask
,
4057 struct nfs4_fsinfo_res res
= {
4060 struct rpc_message msg
= {
4061 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FSINFO
],
4066 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
4069 static int nfs4_do_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsinfo
*fsinfo
)
4071 struct nfs4_exception exception
= { };
4072 unsigned long now
= jiffies
;
4076 err
= _nfs4_do_fsinfo(server
, fhandle
, fsinfo
);
4077 trace_nfs4_fsinfo(server
, fhandle
, fsinfo
->fattr
, err
);
4079 struct nfs_client
*clp
= server
->nfs_client
;
4081 spin_lock(&clp
->cl_lock
);
4082 clp
->cl_lease_time
= fsinfo
->lease_time
* HZ
;
4083 clp
->cl_last_renewal
= now
;
4084 spin_unlock(&clp
->cl_lock
);
4087 err
= nfs4_handle_exception(server
, err
, &exception
);
4088 } while (exception
.retry
);
4092 static int nfs4_proc_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsinfo
*fsinfo
)
4096 nfs_fattr_init(fsinfo
->fattr
);
4097 error
= nfs4_do_fsinfo(server
, fhandle
, fsinfo
);
4099 /* block layout checks this! */
4100 server
->pnfs_blksize
= fsinfo
->blksize
;
4101 set_pnfs_layoutdriver(server
, fhandle
, fsinfo
->layouttype
);
4107 static int _nfs4_proc_pathconf(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
4108 struct nfs_pathconf
*pathconf
)
4110 struct nfs4_pathconf_arg args
= {
4112 .bitmask
= server
->attr_bitmask
,
4114 struct nfs4_pathconf_res res
= {
4115 .pathconf
= pathconf
,
4117 struct rpc_message msg
= {
4118 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_PATHCONF
],
4123 /* None of the pathconf attributes are mandatory to implement */
4124 if ((args
.bitmask
[0] & nfs4_pathconf_bitmap
[0]) == 0) {
4125 memset(pathconf
, 0, sizeof(*pathconf
));
4129 nfs_fattr_init(pathconf
->fattr
);
4130 return nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
4133 static int nfs4_proc_pathconf(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
4134 struct nfs_pathconf
*pathconf
)
4136 struct nfs4_exception exception
= { };
4140 err
= nfs4_handle_exception(server
,
4141 _nfs4_proc_pathconf(server
, fhandle
, pathconf
),
4143 } while (exception
.retry
);
4147 int nfs4_set_rw_stateid(nfs4_stateid
*stateid
,
4148 const struct nfs_open_context
*ctx
,
4149 const struct nfs_lock_context
*l_ctx
,
4152 const struct nfs_lockowner
*lockowner
= NULL
;
4155 lockowner
= &l_ctx
->lockowner
;
4156 return nfs4_select_rw_stateid(stateid
, ctx
->state
, fmode
, lockowner
);
4158 EXPORT_SYMBOL_GPL(nfs4_set_rw_stateid
);
4160 static bool nfs4_stateid_is_current(nfs4_stateid
*stateid
,
4161 const struct nfs_open_context
*ctx
,
4162 const struct nfs_lock_context
*l_ctx
,
4165 nfs4_stateid current_stateid
;
4167 /* If the current stateid represents a lost lock, then exit */
4168 if (nfs4_set_rw_stateid(¤t_stateid
, ctx
, l_ctx
, fmode
) == -EIO
)
4170 return nfs4_stateid_match(stateid
, ¤t_stateid
);
4173 static bool nfs4_error_stateid_expired(int err
)
4176 case -NFS4ERR_DELEG_REVOKED
:
4177 case -NFS4ERR_ADMIN_REVOKED
:
4178 case -NFS4ERR_BAD_STATEID
:
4179 case -NFS4ERR_STALE_STATEID
:
4180 case -NFS4ERR_OLD_STATEID
:
4181 case -NFS4ERR_OPENMODE
:
4182 case -NFS4ERR_EXPIRED
:
4188 void __nfs4_read_done_cb(struct nfs_pgio_header
*hdr
)
4190 nfs_invalidate_atime(hdr
->inode
);
4193 static int nfs4_read_done_cb(struct rpc_task
*task
, struct nfs_pgio_header
*hdr
)
4195 struct nfs_server
*server
= NFS_SERVER(hdr
->inode
);
4197 trace_nfs4_read(hdr
, task
->tk_status
);
4198 if (nfs4_async_handle_error(task
, server
,
4199 hdr
->args
.context
->state
,
4201 rpc_restart_call_prepare(task
);
4205 __nfs4_read_done_cb(hdr
);
4206 if (task
->tk_status
> 0)
4207 renew_lease(server
, hdr
->timestamp
);
4211 static bool nfs4_read_stateid_changed(struct rpc_task
*task
,
4212 struct nfs_pgio_args
*args
)
4215 if (!nfs4_error_stateid_expired(task
->tk_status
) ||
4216 nfs4_stateid_is_current(&args
->stateid
,
4221 rpc_restart_call_prepare(task
);
4225 static int nfs4_read_done(struct rpc_task
*task
, struct nfs_pgio_header
*hdr
)
4228 dprintk("--> %s\n", __func__
);
4230 if (!nfs4_sequence_done(task
, &hdr
->res
.seq_res
))
4232 if (nfs4_read_stateid_changed(task
, &hdr
->args
))
4234 return hdr
->pgio_done_cb
? hdr
->pgio_done_cb(task
, hdr
) :
4235 nfs4_read_done_cb(task
, hdr
);
4238 static void nfs4_proc_read_setup(struct nfs_pgio_header
*hdr
,
4239 struct rpc_message
*msg
)
4241 hdr
->timestamp
= jiffies
;
4242 hdr
->pgio_done_cb
= nfs4_read_done_cb
;
4243 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READ
];
4244 nfs4_init_sequence(&hdr
->args
.seq_args
, &hdr
->res
.seq_res
, 0);
4247 static int nfs4_proc_pgio_rpc_prepare(struct rpc_task
*task
,
4248 struct nfs_pgio_header
*hdr
)
4250 if (nfs4_setup_sequence(NFS_SERVER(hdr
->inode
),
4251 &hdr
->args
.seq_args
,
4255 if (nfs4_set_rw_stateid(&hdr
->args
.stateid
, hdr
->args
.context
,
4256 hdr
->args
.lock_context
,
4257 hdr
->rw_ops
->rw_mode
) == -EIO
)
4259 if (unlikely(test_bit(NFS_CONTEXT_BAD
, &hdr
->args
.context
->flags
)))
4264 static int nfs4_write_done_cb(struct rpc_task
*task
,
4265 struct nfs_pgio_header
*hdr
)
4267 struct inode
*inode
= hdr
->inode
;
4269 trace_nfs4_write(hdr
, task
->tk_status
);
4270 if (nfs4_async_handle_error(task
, NFS_SERVER(inode
),
4271 hdr
->args
.context
->state
,
4273 rpc_restart_call_prepare(task
);
4276 if (task
->tk_status
>= 0) {
4277 renew_lease(NFS_SERVER(inode
), hdr
->timestamp
);
4278 nfs_writeback_update_inode(hdr
);
4283 static bool nfs4_write_stateid_changed(struct rpc_task
*task
,
4284 struct nfs_pgio_args
*args
)
4287 if (!nfs4_error_stateid_expired(task
->tk_status
) ||
4288 nfs4_stateid_is_current(&args
->stateid
,
4293 rpc_restart_call_prepare(task
);
4297 static int nfs4_write_done(struct rpc_task
*task
, struct nfs_pgio_header
*hdr
)
4299 if (!nfs4_sequence_done(task
, &hdr
->res
.seq_res
))
4301 if (nfs4_write_stateid_changed(task
, &hdr
->args
))
4303 return hdr
->pgio_done_cb
? hdr
->pgio_done_cb(task
, hdr
) :
4304 nfs4_write_done_cb(task
, hdr
);
4308 bool nfs4_write_need_cache_consistency_data(struct nfs_pgio_header
*hdr
)
4310 /* Don't request attributes for pNFS or O_DIRECT writes */
4311 if (hdr
->ds_clp
!= NULL
|| hdr
->dreq
!= NULL
)
4313 /* Otherwise, request attributes if and only if we don't hold
4316 return nfs4_have_delegation(hdr
->inode
, FMODE_READ
) == 0;
4319 static void nfs4_proc_write_setup(struct nfs_pgio_header
*hdr
,
4320 struct rpc_message
*msg
)
4322 struct nfs_server
*server
= NFS_SERVER(hdr
->inode
);
4324 if (!nfs4_write_need_cache_consistency_data(hdr
)) {
4325 hdr
->args
.bitmask
= NULL
;
4326 hdr
->res
.fattr
= NULL
;
4328 hdr
->args
.bitmask
= server
->cache_consistency_bitmask
;
4330 if (!hdr
->pgio_done_cb
)
4331 hdr
->pgio_done_cb
= nfs4_write_done_cb
;
4332 hdr
->res
.server
= server
;
4333 hdr
->timestamp
= jiffies
;
4335 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_WRITE
];
4336 nfs4_init_sequence(&hdr
->args
.seq_args
, &hdr
->res
.seq_res
, 1);
4339 static void nfs4_proc_commit_rpc_prepare(struct rpc_task
*task
, struct nfs_commit_data
*data
)
4341 nfs4_setup_sequence(NFS_SERVER(data
->inode
),
4342 &data
->args
.seq_args
,
4347 static int nfs4_commit_done_cb(struct rpc_task
*task
, struct nfs_commit_data
*data
)
4349 struct inode
*inode
= data
->inode
;
4351 trace_nfs4_commit(data
, task
->tk_status
);
4352 if (nfs4_async_handle_error(task
, NFS_SERVER(inode
),
4353 NULL
, NULL
) == -EAGAIN
) {
4354 rpc_restart_call_prepare(task
);
4360 static int nfs4_commit_done(struct rpc_task
*task
, struct nfs_commit_data
*data
)
4362 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
4364 return data
->commit_done_cb(task
, data
);
4367 static void nfs4_proc_commit_setup(struct nfs_commit_data
*data
, struct rpc_message
*msg
)
4369 struct nfs_server
*server
= NFS_SERVER(data
->inode
);
4371 if (data
->commit_done_cb
== NULL
)
4372 data
->commit_done_cb
= nfs4_commit_done_cb
;
4373 data
->res
.server
= server
;
4374 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_COMMIT
];
4375 nfs4_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
4378 struct nfs4_renewdata
{
4379 struct nfs_client
*client
;
4380 unsigned long timestamp
;
4384 * nfs4_proc_async_renew(): This is not one of the nfs_rpc_ops; it is a special
4385 * standalone procedure for queueing an asynchronous RENEW.
4387 static void nfs4_renew_release(void *calldata
)
4389 struct nfs4_renewdata
*data
= calldata
;
4390 struct nfs_client
*clp
= data
->client
;
4392 if (atomic_read(&clp
->cl_count
) > 1)
4393 nfs4_schedule_state_renewal(clp
);
4394 nfs_put_client(clp
);
4398 static void nfs4_renew_done(struct rpc_task
*task
, void *calldata
)
4400 struct nfs4_renewdata
*data
= calldata
;
4401 struct nfs_client
*clp
= data
->client
;
4402 unsigned long timestamp
= data
->timestamp
;
4404 trace_nfs4_renew_async(clp
, task
->tk_status
);
4405 switch (task
->tk_status
) {
4408 case -NFS4ERR_LEASE_MOVED
:
4409 nfs4_schedule_lease_moved_recovery(clp
);
4412 /* Unless we're shutting down, schedule state recovery! */
4413 if (test_bit(NFS_CS_RENEWD
, &clp
->cl_res_state
) == 0)
4415 if (task
->tk_status
!= NFS4ERR_CB_PATH_DOWN
) {
4416 nfs4_schedule_lease_recovery(clp
);
4419 nfs4_schedule_path_down_recovery(clp
);
4421 do_renew_lease(clp
, timestamp
);
4424 static const struct rpc_call_ops nfs4_renew_ops
= {
4425 .rpc_call_done
= nfs4_renew_done
,
4426 .rpc_release
= nfs4_renew_release
,
4429 static int nfs4_proc_async_renew(struct nfs_client
*clp
, struct rpc_cred
*cred
, unsigned renew_flags
)
4431 struct rpc_message msg
= {
4432 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENEW
],
4436 struct nfs4_renewdata
*data
;
4438 if (renew_flags
== 0)
4440 if (!atomic_inc_not_zero(&clp
->cl_count
))
4442 data
= kmalloc(sizeof(*data
), GFP_NOFS
);
4446 data
->timestamp
= jiffies
;
4447 return rpc_call_async(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
,
4448 &nfs4_renew_ops
, data
);
4451 static int nfs4_proc_renew(struct nfs_client
*clp
, struct rpc_cred
*cred
)
4453 struct rpc_message msg
= {
4454 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENEW
],
4458 unsigned long now
= jiffies
;
4461 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
4464 do_renew_lease(clp
, now
);
4468 static inline int nfs4_server_supports_acls(struct nfs_server
*server
)
4470 return server
->caps
& NFS_CAP_ACLS
;
4473 /* Assuming that XATTR_SIZE_MAX is a multiple of PAGE_SIZE, and that
4474 * it's OK to put sizeof(void) * (XATTR_SIZE_MAX/PAGE_SIZE) bytes on
4477 #define NFS4ACL_MAXPAGES DIV_ROUND_UP(XATTR_SIZE_MAX, PAGE_SIZE)
4479 static int buf_to_pages_noslab(const void *buf
, size_t buflen
,
4480 struct page
**pages
, unsigned int *pgbase
)
4482 struct page
*newpage
, **spages
;
4488 len
= min_t(size_t, PAGE_SIZE
, buflen
);
4489 newpage
= alloc_page(GFP_KERNEL
);
4491 if (newpage
== NULL
)
4493 memcpy(page_address(newpage
), buf
, len
);
4498 } while (buflen
!= 0);
4504 __free_page(spages
[rc
-1]);
4508 struct nfs4_cached_acl
{
4514 static void nfs4_set_cached_acl(struct inode
*inode
, struct nfs4_cached_acl
*acl
)
4516 struct nfs_inode
*nfsi
= NFS_I(inode
);
4518 spin_lock(&inode
->i_lock
);
4519 kfree(nfsi
->nfs4_acl
);
4520 nfsi
->nfs4_acl
= acl
;
4521 spin_unlock(&inode
->i_lock
);
4524 static void nfs4_zap_acl_attr(struct inode
*inode
)
4526 nfs4_set_cached_acl(inode
, NULL
);
4529 static inline ssize_t
nfs4_read_cached_acl(struct inode
*inode
, char *buf
, size_t buflen
)
4531 struct nfs_inode
*nfsi
= NFS_I(inode
);
4532 struct nfs4_cached_acl
*acl
;
4535 spin_lock(&inode
->i_lock
);
4536 acl
= nfsi
->nfs4_acl
;
4539 if (buf
== NULL
) /* user is just asking for length */
4541 if (acl
->cached
== 0)
4543 ret
= -ERANGE
; /* see getxattr(2) man page */
4544 if (acl
->len
> buflen
)
4546 memcpy(buf
, acl
->data
, acl
->len
);
4550 spin_unlock(&inode
->i_lock
);
4554 static void nfs4_write_cached_acl(struct inode
*inode
, struct page
**pages
, size_t pgbase
, size_t acl_len
)
4556 struct nfs4_cached_acl
*acl
;
4557 size_t buflen
= sizeof(*acl
) + acl_len
;
4559 if (buflen
<= PAGE_SIZE
) {
4560 acl
= kmalloc(buflen
, GFP_KERNEL
);
4564 _copy_from_pages(acl
->data
, pages
, pgbase
, acl_len
);
4566 acl
= kmalloc(sizeof(*acl
), GFP_KERNEL
);
4573 nfs4_set_cached_acl(inode
, acl
);
4577 * The getxattr API returns the required buffer length when called with a
4578 * NULL buf. The NFSv4 acl tool then calls getxattr again after allocating
4579 * the required buf. On a NULL buf, we send a page of data to the server
4580 * guessing that the ACL request can be serviced by a page. If so, we cache
4581 * up to the page of ACL data, and the 2nd call to getxattr is serviced by
4582 * the cache. If not so, we throw away the page, and cache the required
4583 * length. The next getxattr call will then produce another round trip to
4584 * the server, this time with the input buf of the required size.
4586 static ssize_t
__nfs4_get_acl_uncached(struct inode
*inode
, void *buf
, size_t buflen
)
4588 struct page
*pages
[NFS4ACL_MAXPAGES
] = {NULL
, };
4589 struct nfs_getaclargs args
= {
4590 .fh
= NFS_FH(inode
),
4594 struct nfs_getaclres res
= {
4597 struct rpc_message msg
= {
4598 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETACL
],
4602 unsigned int npages
= DIV_ROUND_UP(buflen
, PAGE_SIZE
);
4603 int ret
= -ENOMEM
, i
;
4605 /* As long as we're doing a round trip to the server anyway,
4606 * let's be prepared for a page of acl data. */
4609 if (npages
> ARRAY_SIZE(pages
))
4612 for (i
= 0; i
< npages
; i
++) {
4613 pages
[i
] = alloc_page(GFP_KERNEL
);
4618 /* for decoding across pages */
4619 res
.acl_scratch
= alloc_page(GFP_KERNEL
);
4620 if (!res
.acl_scratch
)
4623 args
.acl_len
= npages
* PAGE_SIZE
;
4624 args
.acl_pgbase
= 0;
4626 dprintk("%s buf %p buflen %zu npages %d args.acl_len %zu\n",
4627 __func__
, buf
, buflen
, npages
, args
.acl_len
);
4628 ret
= nfs4_call_sync(NFS_SERVER(inode
)->client
, NFS_SERVER(inode
),
4629 &msg
, &args
.seq_args
, &res
.seq_res
, 0);
4633 /* Handle the case where the passed-in buffer is too short */
4634 if (res
.acl_flags
& NFS4_ACL_TRUNC
) {
4635 /* Did the user only issue a request for the acl length? */
4641 nfs4_write_cached_acl(inode
, pages
, res
.acl_data_offset
, res
.acl_len
);
4643 if (res
.acl_len
> buflen
) {
4647 _copy_from_pages(buf
, pages
, res
.acl_data_offset
, res
.acl_len
);
4652 for (i
= 0; i
< npages
; i
++)
4654 __free_page(pages
[i
]);
4655 if (res
.acl_scratch
)
4656 __free_page(res
.acl_scratch
);
4660 static ssize_t
nfs4_get_acl_uncached(struct inode
*inode
, void *buf
, size_t buflen
)
4662 struct nfs4_exception exception
= { };
4665 ret
= __nfs4_get_acl_uncached(inode
, buf
, buflen
);
4666 trace_nfs4_get_acl(inode
, ret
);
4669 ret
= nfs4_handle_exception(NFS_SERVER(inode
), ret
, &exception
);
4670 } while (exception
.retry
);
4674 static ssize_t
nfs4_proc_get_acl(struct inode
*inode
, void *buf
, size_t buflen
)
4676 struct nfs_server
*server
= NFS_SERVER(inode
);
4679 if (!nfs4_server_supports_acls(server
))
4681 ret
= nfs_revalidate_inode(server
, inode
);
4684 if (NFS_I(inode
)->cache_validity
& NFS_INO_INVALID_ACL
)
4685 nfs_zap_acl_cache(inode
);
4686 ret
= nfs4_read_cached_acl(inode
, buf
, buflen
);
4688 /* -ENOENT is returned if there is no ACL or if there is an ACL
4689 * but no cached acl data, just the acl length */
4691 return nfs4_get_acl_uncached(inode
, buf
, buflen
);
4694 static int __nfs4_proc_set_acl(struct inode
*inode
, const void *buf
, size_t buflen
)
4696 struct nfs_server
*server
= NFS_SERVER(inode
);
4697 struct page
*pages
[NFS4ACL_MAXPAGES
];
4698 struct nfs_setaclargs arg
= {
4699 .fh
= NFS_FH(inode
),
4703 struct nfs_setaclres res
;
4704 struct rpc_message msg
= {
4705 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETACL
],
4709 unsigned int npages
= DIV_ROUND_UP(buflen
, PAGE_SIZE
);
4712 if (!nfs4_server_supports_acls(server
))
4714 if (npages
> ARRAY_SIZE(pages
))
4716 i
= buf_to_pages_noslab(buf
, buflen
, arg
.acl_pages
, &arg
.acl_pgbase
);
4719 nfs4_inode_return_delegation(inode
);
4720 ret
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
4723 * Free each page after tx, so the only ref left is
4724 * held by the network stack
4727 put_page(pages
[i
-1]);
4730 * Acl update can result in inode attribute update.
4731 * so mark the attribute cache invalid.
4733 spin_lock(&inode
->i_lock
);
4734 NFS_I(inode
)->cache_validity
|= NFS_INO_INVALID_ATTR
;
4735 spin_unlock(&inode
->i_lock
);
4736 nfs_access_zap_cache(inode
);
4737 nfs_zap_acl_cache(inode
);
4741 static int nfs4_proc_set_acl(struct inode
*inode
, const void *buf
, size_t buflen
)
4743 struct nfs4_exception exception
= { };
4746 err
= __nfs4_proc_set_acl(inode
, buf
, buflen
);
4747 trace_nfs4_set_acl(inode
, err
);
4748 err
= nfs4_handle_exception(NFS_SERVER(inode
), err
,
4750 } while (exception
.retry
);
4754 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
4755 static int _nfs4_get_security_label(struct inode
*inode
, void *buf
,
4758 struct nfs_server
*server
= NFS_SERVER(inode
);
4759 struct nfs_fattr fattr
;
4760 struct nfs4_label label
= {0, 0, buflen
, buf
};
4762 u32 bitmask
[3] = { 0, 0, FATTR4_WORD2_SECURITY_LABEL
};
4763 struct nfs4_getattr_arg arg
= {
4764 .fh
= NFS_FH(inode
),
4767 struct nfs4_getattr_res res
= {
4772 struct rpc_message msg
= {
4773 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETATTR
],
4779 nfs_fattr_init(&fattr
);
4781 ret
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 0);
4784 if (!(fattr
.valid
& NFS_ATTR_FATTR_V4_SECURITY_LABEL
))
4786 if (buflen
< label
.len
)
4791 static int nfs4_get_security_label(struct inode
*inode
, void *buf
,
4794 struct nfs4_exception exception
= { };
4797 if (!nfs_server_capable(inode
, NFS_CAP_SECURITY_LABEL
))
4801 err
= _nfs4_get_security_label(inode
, buf
, buflen
);
4802 trace_nfs4_get_security_label(inode
, err
);
4803 err
= nfs4_handle_exception(NFS_SERVER(inode
), err
,
4805 } while (exception
.retry
);
4809 static int _nfs4_do_set_security_label(struct inode
*inode
,
4810 struct nfs4_label
*ilabel
,
4811 struct nfs_fattr
*fattr
,
4812 struct nfs4_label
*olabel
)
4815 struct iattr sattr
= {0};
4816 struct nfs_server
*server
= NFS_SERVER(inode
);
4817 const u32 bitmask
[3] = { 0, 0, FATTR4_WORD2_SECURITY_LABEL
};
4818 struct nfs_setattrargs arg
= {
4819 .fh
= NFS_FH(inode
),
4825 struct nfs_setattrres res
= {
4830 struct rpc_message msg
= {
4831 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETATTR
],
4837 nfs4_stateid_copy(&arg
.stateid
, &zero_stateid
);
4839 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
4841 dprintk("%s failed: %d\n", __func__
, status
);
4846 static int nfs4_do_set_security_label(struct inode
*inode
,
4847 struct nfs4_label
*ilabel
,
4848 struct nfs_fattr
*fattr
,
4849 struct nfs4_label
*olabel
)
4851 struct nfs4_exception exception
= { };
4855 err
= _nfs4_do_set_security_label(inode
, ilabel
,
4857 trace_nfs4_set_security_label(inode
, err
);
4858 err
= nfs4_handle_exception(NFS_SERVER(inode
), err
,
4860 } while (exception
.retry
);
4865 nfs4_set_security_label(struct dentry
*dentry
, const void *buf
, size_t buflen
)
4867 struct nfs4_label ilabel
, *olabel
= NULL
;
4868 struct nfs_fattr fattr
;
4869 struct rpc_cred
*cred
;
4870 struct inode
*inode
= d_inode(dentry
);
4873 if (!nfs_server_capable(inode
, NFS_CAP_SECURITY_LABEL
))
4876 nfs_fattr_init(&fattr
);
4880 ilabel
.label
= (char *)buf
;
4881 ilabel
.len
= buflen
;
4883 cred
= rpc_lookup_cred();
4885 return PTR_ERR(cred
);
4887 olabel
= nfs4_label_alloc(NFS_SERVER(inode
), GFP_KERNEL
);
4888 if (IS_ERR(olabel
)) {
4889 status
= -PTR_ERR(olabel
);
4893 status
= nfs4_do_set_security_label(inode
, &ilabel
, &fattr
, olabel
);
4895 nfs_setsecurity(inode
, &fattr
, olabel
);
4897 nfs4_label_free(olabel
);
4902 #endif /* CONFIG_NFS_V4_SECURITY_LABEL */
4906 nfs4_async_handle_error(struct rpc_task
*task
, const struct nfs_server
*server
,
4907 struct nfs4_state
*state
, long *timeout
)
4909 struct nfs_client
*clp
= server
->nfs_client
;
4911 if (task
->tk_status
>= 0)
4913 switch(task
->tk_status
) {
4914 case -NFS4ERR_DELEG_REVOKED
:
4915 case -NFS4ERR_ADMIN_REVOKED
:
4916 case -NFS4ERR_BAD_STATEID
:
4917 case -NFS4ERR_OPENMODE
:
4920 if (nfs4_schedule_stateid_recovery(server
, state
) < 0)
4921 goto recovery_failed
;
4922 goto wait_on_recovery
;
4923 case -NFS4ERR_EXPIRED
:
4924 if (state
!= NULL
) {
4925 if (nfs4_schedule_stateid_recovery(server
, state
) < 0)
4926 goto recovery_failed
;
4928 case -NFS4ERR_STALE_STATEID
:
4929 case -NFS4ERR_STALE_CLIENTID
:
4930 nfs4_schedule_lease_recovery(clp
);
4931 goto wait_on_recovery
;
4932 case -NFS4ERR_MOVED
:
4933 if (nfs4_schedule_migration_recovery(server
) < 0)
4934 goto recovery_failed
;
4935 goto wait_on_recovery
;
4936 case -NFS4ERR_LEASE_MOVED
:
4937 nfs4_schedule_lease_moved_recovery(clp
);
4938 goto wait_on_recovery
;
4939 #if defined(CONFIG_NFS_V4_1)
4940 case -NFS4ERR_BADSESSION
:
4941 case -NFS4ERR_BADSLOT
:
4942 case -NFS4ERR_BAD_HIGH_SLOT
:
4943 case -NFS4ERR_DEADSESSION
:
4944 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
4945 case -NFS4ERR_SEQ_FALSE_RETRY
:
4946 case -NFS4ERR_SEQ_MISORDERED
:
4947 dprintk("%s ERROR %d, Reset session\n", __func__
,
4949 nfs4_schedule_session_recovery(clp
->cl_session
, task
->tk_status
);
4950 goto wait_on_recovery
;
4951 #endif /* CONFIG_NFS_V4_1 */
4952 case -NFS4ERR_DELAY
:
4953 nfs_inc_server_stats(server
, NFSIOS_DELAY
);
4954 rpc_delay(task
, nfs4_update_delay(timeout
));
4956 case -NFS4ERR_GRACE
:
4957 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
4958 case -NFS4ERR_RETRY_UNCACHED_REP
:
4959 case -NFS4ERR_OLD_STATEID
:
4962 task
->tk_status
= nfs4_map_errors(task
->tk_status
);
4965 task
->tk_status
= -EIO
;
4968 rpc_sleep_on(&clp
->cl_rpcwaitq
, task
, NULL
);
4969 if (test_bit(NFS4CLNT_MANAGER_RUNNING
, &clp
->cl_state
) == 0)
4970 rpc_wake_up_queued_task(&clp
->cl_rpcwaitq
, task
);
4971 if (test_bit(NFS_MIG_FAILED
, &server
->mig_status
))
4972 goto recovery_failed
;
4974 task
->tk_status
= 0;
4978 static void nfs4_init_boot_verifier(const struct nfs_client
*clp
,
4979 nfs4_verifier
*bootverf
)
4983 if (test_bit(NFS4CLNT_PURGE_STATE
, &clp
->cl_state
)) {
4984 /* An impossible timestamp guarantees this value
4985 * will never match a generated boot time. */
4987 verf
[1] = cpu_to_be32(NSEC_PER_SEC
+ 1);
4989 struct nfs_net
*nn
= net_generic(clp
->cl_net
, nfs_net_id
);
4990 verf
[0] = cpu_to_be32(nn
->boot_time
.tv_sec
);
4991 verf
[1] = cpu_to_be32(nn
->boot_time
.tv_nsec
);
4993 memcpy(bootverf
->data
, verf
, sizeof(bootverf
->data
));
4997 nfs4_init_nonuniform_client_string(struct nfs_client
*clp
)
5002 bool retried
= false;
5004 if (clp
->cl_owner_id
!= NULL
)
5008 len
= 10 + strlen(clp
->cl_ipaddr
) + 1 +
5009 strlen(rpc_peeraddr2str(clp
->cl_rpcclient
, RPC_DISPLAY_ADDR
)) +
5011 strlen(rpc_peeraddr2str(clp
->cl_rpcclient
, RPC_DISPLAY_PROTO
)) +
5015 if (len
> NFS4_OPAQUE_LIMIT
+ 1)
5019 * Since this string is allocated at mount time, and held until the
5020 * nfs_client is destroyed, we can use GFP_KERNEL here w/o worrying
5021 * about a memory-reclaim deadlock.
5023 str
= kmalloc(len
, GFP_KERNEL
);
5028 result
= scnprintf(str
, len
, "Linux NFSv4.0 %s/%s %s",
5030 rpc_peeraddr2str(clp
->cl_rpcclient
, RPC_DISPLAY_ADDR
),
5031 rpc_peeraddr2str(clp
->cl_rpcclient
, RPC_DISPLAY_PROTO
));
5034 /* Did something change? */
5035 if (result
>= len
) {
5042 clp
->cl_owner_id
= str
;
5047 nfs4_init_uniquifier_client_string(struct nfs_client
*clp
)
5053 len
= 10 + 10 + 1 + 10 + 1 +
5054 strlen(nfs4_client_id_uniquifier
) + 1 +
5055 strlen(clp
->cl_rpcclient
->cl_nodename
) + 1;
5057 if (len
> NFS4_OPAQUE_LIMIT
+ 1)
5061 * Since this string is allocated at mount time, and held until the
5062 * nfs_client is destroyed, we can use GFP_KERNEL here w/o worrying
5063 * about a memory-reclaim deadlock.
5065 str
= kmalloc(len
, GFP_KERNEL
);
5069 result
= scnprintf(str
, len
, "Linux NFSv%u.%u %s/%s",
5070 clp
->rpc_ops
->version
, clp
->cl_minorversion
,
5071 nfs4_client_id_uniquifier
,
5072 clp
->cl_rpcclient
->cl_nodename
);
5073 if (result
>= len
) {
5077 clp
->cl_owner_id
= str
;
5082 nfs4_init_uniform_client_string(struct nfs_client
*clp
)
5088 if (clp
->cl_owner_id
!= NULL
)
5091 if (nfs4_client_id_uniquifier
[0] != '\0')
5092 return nfs4_init_uniquifier_client_string(clp
);
5094 len
= 10 + 10 + 1 + 10 + 1 +
5095 strlen(clp
->cl_rpcclient
->cl_nodename
) + 1;
5097 if (len
> NFS4_OPAQUE_LIMIT
+ 1)
5101 * Since this string is allocated at mount time, and held until the
5102 * nfs_client is destroyed, we can use GFP_KERNEL here w/o worrying
5103 * about a memory-reclaim deadlock.
5105 str
= kmalloc(len
, GFP_KERNEL
);
5109 result
= scnprintf(str
, len
, "Linux NFSv%u.%u %s",
5110 clp
->rpc_ops
->version
, clp
->cl_minorversion
,
5111 clp
->cl_rpcclient
->cl_nodename
);
5112 if (result
>= len
) {
5116 clp
->cl_owner_id
= str
;
5121 * nfs4_callback_up_net() starts only "tcp" and "tcp6" callback
5122 * services. Advertise one based on the address family of the
5126 nfs4_init_callback_netid(const struct nfs_client
*clp
, char *buf
, size_t len
)
5128 if (strchr(clp
->cl_ipaddr
, ':') != NULL
)
5129 return scnprintf(buf
, len
, "tcp6");
5131 return scnprintf(buf
, len
, "tcp");
5134 static void nfs4_setclientid_done(struct rpc_task
*task
, void *calldata
)
5136 struct nfs4_setclientid
*sc
= calldata
;
5138 if (task
->tk_status
== 0)
5139 sc
->sc_cred
= get_rpccred(task
->tk_rqstp
->rq_cred
);
5142 static const struct rpc_call_ops nfs4_setclientid_ops
= {
5143 .rpc_call_done
= nfs4_setclientid_done
,
5147 * nfs4_proc_setclientid - Negotiate client ID
5148 * @clp: state data structure
5149 * @program: RPC program for NFSv4 callback service
5150 * @port: IP port number for NFS4 callback service
5151 * @cred: RPC credential to use for this call
5152 * @res: where to place the result
5154 * Returns zero, a negative errno, or a negative NFS4ERR status code.
5156 int nfs4_proc_setclientid(struct nfs_client
*clp
, u32 program
,
5157 unsigned short port
, struct rpc_cred
*cred
,
5158 struct nfs4_setclientid_res
*res
)
5160 nfs4_verifier sc_verifier
;
5161 struct nfs4_setclientid setclientid
= {
5162 .sc_verifier
= &sc_verifier
,
5166 struct rpc_message msg
= {
5167 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETCLIENTID
],
5168 .rpc_argp
= &setclientid
,
5172 struct rpc_task
*task
;
5173 struct rpc_task_setup task_setup_data
= {
5174 .rpc_client
= clp
->cl_rpcclient
,
5175 .rpc_message
= &msg
,
5176 .callback_ops
= &nfs4_setclientid_ops
,
5177 .callback_data
= &setclientid
,
5178 .flags
= RPC_TASK_TIMEOUT
,
5182 /* nfs_client_id4 */
5183 nfs4_init_boot_verifier(clp
, &sc_verifier
);
5185 if (test_bit(NFS_CS_MIGRATION
, &clp
->cl_flags
))
5186 status
= nfs4_init_uniform_client_string(clp
);
5188 status
= nfs4_init_nonuniform_client_string(clp
);
5194 setclientid
.sc_netid_len
=
5195 nfs4_init_callback_netid(clp
,
5196 setclientid
.sc_netid
,
5197 sizeof(setclientid
.sc_netid
));
5198 setclientid
.sc_uaddr_len
= scnprintf(setclientid
.sc_uaddr
,
5199 sizeof(setclientid
.sc_uaddr
), "%s.%u.%u",
5200 clp
->cl_ipaddr
, port
>> 8, port
& 255);
5202 dprintk("NFS call setclientid auth=%s, '%s'\n",
5203 clp
->cl_rpcclient
->cl_auth
->au_ops
->au_name
,
5205 task
= rpc_run_task(&task_setup_data
);
5207 status
= PTR_ERR(task
);
5210 status
= task
->tk_status
;
5211 if (setclientid
.sc_cred
) {
5212 clp
->cl_acceptor
= rpcauth_stringify_acceptor(setclientid
.sc_cred
);
5213 put_rpccred(setclientid
.sc_cred
);
5217 trace_nfs4_setclientid(clp
, status
);
5218 dprintk("NFS reply setclientid: %d\n", status
);
5223 * nfs4_proc_setclientid_confirm - Confirm client ID
5224 * @clp: state data structure
5225 * @res: result of a previous SETCLIENTID
5226 * @cred: RPC credential to use for this call
5228 * Returns zero, a negative errno, or a negative NFS4ERR status code.
5230 int nfs4_proc_setclientid_confirm(struct nfs_client
*clp
,
5231 struct nfs4_setclientid_res
*arg
,
5232 struct rpc_cred
*cred
)
5234 struct rpc_message msg
= {
5235 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETCLIENTID_CONFIRM
],
5241 dprintk("NFS call setclientid_confirm auth=%s, (client ID %llx)\n",
5242 clp
->cl_rpcclient
->cl_auth
->au_ops
->au_name
,
5244 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
5245 trace_nfs4_setclientid_confirm(clp
, status
);
5246 dprintk("NFS reply setclientid_confirm: %d\n", status
);
5250 struct nfs4_delegreturndata
{
5251 struct nfs4_delegreturnargs args
;
5252 struct nfs4_delegreturnres res
;
5254 nfs4_stateid stateid
;
5255 unsigned long timestamp
;
5256 struct nfs_fattr fattr
;
5258 struct inode
*inode
;
5263 static void nfs4_delegreturn_done(struct rpc_task
*task
, void *calldata
)
5265 struct nfs4_delegreturndata
*data
= calldata
;
5267 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
5270 trace_nfs4_delegreturn_exit(&data
->args
, &data
->res
, task
->tk_status
);
5271 switch (task
->tk_status
) {
5273 renew_lease(data
->res
.server
, data
->timestamp
);
5274 case -NFS4ERR_ADMIN_REVOKED
:
5275 case -NFS4ERR_DELEG_REVOKED
:
5276 case -NFS4ERR_BAD_STATEID
:
5277 case -NFS4ERR_OLD_STATEID
:
5278 case -NFS4ERR_STALE_STATEID
:
5279 case -NFS4ERR_EXPIRED
:
5280 task
->tk_status
= 0;
5282 pnfs_roc_set_barrier(data
->inode
, data
->roc_barrier
);
5285 if (nfs4_async_handle_error(task
, data
->res
.server
,
5286 NULL
, NULL
) == -EAGAIN
) {
5287 rpc_restart_call_prepare(task
);
5291 data
->rpc_status
= task
->tk_status
;
5294 static void nfs4_delegreturn_release(void *calldata
)
5296 struct nfs4_delegreturndata
*data
= calldata
;
5297 struct inode
*inode
= data
->inode
;
5301 pnfs_roc_release(inode
);
5302 nfs_iput_and_deactive(inode
);
5307 static void nfs4_delegreturn_prepare(struct rpc_task
*task
, void *data
)
5309 struct nfs4_delegreturndata
*d_data
;
5311 d_data
= (struct nfs4_delegreturndata
*)data
;
5314 pnfs_roc_get_barrier(d_data
->inode
, &d_data
->roc_barrier
);
5316 nfs4_setup_sequence(d_data
->res
.server
,
5317 &d_data
->args
.seq_args
,
5318 &d_data
->res
.seq_res
,
5322 static const struct rpc_call_ops nfs4_delegreturn_ops
= {
5323 .rpc_call_prepare
= nfs4_delegreturn_prepare
,
5324 .rpc_call_done
= nfs4_delegreturn_done
,
5325 .rpc_release
= nfs4_delegreturn_release
,
5328 static int _nfs4_proc_delegreturn(struct inode
*inode
, struct rpc_cred
*cred
, const nfs4_stateid
*stateid
, int issync
)
5330 struct nfs4_delegreturndata
*data
;
5331 struct nfs_server
*server
= NFS_SERVER(inode
);
5332 struct rpc_task
*task
;
5333 struct rpc_message msg
= {
5334 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DELEGRETURN
],
5337 struct rpc_task_setup task_setup_data
= {
5338 .rpc_client
= server
->client
,
5339 .rpc_message
= &msg
,
5340 .callback_ops
= &nfs4_delegreturn_ops
,
5341 .flags
= RPC_TASK_ASYNC
,
5345 data
= kzalloc(sizeof(*data
), GFP_NOFS
);
5348 nfs4_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
5349 data
->args
.fhandle
= &data
->fh
;
5350 data
->args
.stateid
= &data
->stateid
;
5351 data
->args
.bitmask
= server
->cache_consistency_bitmask
;
5352 nfs_copy_fh(&data
->fh
, NFS_FH(inode
));
5353 nfs4_stateid_copy(&data
->stateid
, stateid
);
5354 data
->res
.fattr
= &data
->fattr
;
5355 data
->res
.server
= server
;
5356 nfs_fattr_init(data
->res
.fattr
);
5357 data
->timestamp
= jiffies
;
5358 data
->rpc_status
= 0;
5359 data
->inode
= nfs_igrab_and_active(inode
);
5361 data
->roc
= nfs4_roc(inode
);
5363 task_setup_data
.callback_data
= data
;
5364 msg
.rpc_argp
= &data
->args
;
5365 msg
.rpc_resp
= &data
->res
;
5366 task
= rpc_run_task(&task_setup_data
);
5368 return PTR_ERR(task
);
5371 status
= nfs4_wait_for_completion_rpc_task(task
);
5374 status
= data
->rpc_status
;
5376 nfs_post_op_update_inode_force_wcc(inode
, &data
->fattr
);
5378 nfs_refresh_inode(inode
, &data
->fattr
);
5384 int nfs4_proc_delegreturn(struct inode
*inode
, struct rpc_cred
*cred
, const nfs4_stateid
*stateid
, int issync
)
5386 struct nfs_server
*server
= NFS_SERVER(inode
);
5387 struct nfs4_exception exception
= { };
5390 err
= _nfs4_proc_delegreturn(inode
, cred
, stateid
, issync
);
5391 trace_nfs4_delegreturn(inode
, err
);
5393 case -NFS4ERR_STALE_STATEID
:
5394 case -NFS4ERR_EXPIRED
:
5398 err
= nfs4_handle_exception(server
, err
, &exception
);
5399 } while (exception
.retry
);
5403 #define NFS4_LOCK_MINTIMEOUT (1 * HZ)
5404 #define NFS4_LOCK_MAXTIMEOUT (30 * HZ)
5407 * sleep, with exponential backoff, and retry the LOCK operation.
5409 static unsigned long
5410 nfs4_set_lock_task_retry(unsigned long timeout
)
5412 freezable_schedule_timeout_killable_unsafe(timeout
);
5414 if (timeout
> NFS4_LOCK_MAXTIMEOUT
)
5415 return NFS4_LOCK_MAXTIMEOUT
;
5419 static int _nfs4_proc_getlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
5421 struct inode
*inode
= state
->inode
;
5422 struct nfs_server
*server
= NFS_SERVER(inode
);
5423 struct nfs_client
*clp
= server
->nfs_client
;
5424 struct nfs_lockt_args arg
= {
5425 .fh
= NFS_FH(inode
),
5428 struct nfs_lockt_res res
= {
5431 struct rpc_message msg
= {
5432 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCKT
],
5435 .rpc_cred
= state
->owner
->so_cred
,
5437 struct nfs4_lock_state
*lsp
;
5440 arg
.lock_owner
.clientid
= clp
->cl_clientid
;
5441 status
= nfs4_set_lock_state(state
, request
);
5444 lsp
= request
->fl_u
.nfs4_fl
.owner
;
5445 arg
.lock_owner
.id
= lsp
->ls_seqid
.owner_id
;
5446 arg
.lock_owner
.s_dev
= server
->s_dev
;
5447 status
= nfs4_call_sync(server
->client
, server
, &msg
, &arg
.seq_args
, &res
.seq_res
, 1);
5450 request
->fl_type
= F_UNLCK
;
5452 case -NFS4ERR_DENIED
:
5455 request
->fl_ops
->fl_release_private(request
);
5456 request
->fl_ops
= NULL
;
5461 static int nfs4_proc_getlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
5463 struct nfs4_exception exception
= { };
5467 err
= _nfs4_proc_getlk(state
, cmd
, request
);
5468 trace_nfs4_get_lock(request
, state
, cmd
, err
);
5469 err
= nfs4_handle_exception(NFS_SERVER(state
->inode
), err
,
5471 } while (exception
.retry
);
5475 static int do_vfs_lock(struct inode
*inode
, struct file_lock
*fl
)
5478 switch (fl
->fl_flags
& (FL_POSIX
|FL_FLOCK
)) {
5480 res
= posix_lock_inode_wait(inode
, fl
);
5483 res
= flock_lock_inode_wait(inode
, fl
);
5491 struct nfs4_unlockdata
{
5492 struct nfs_locku_args arg
;
5493 struct nfs_locku_res res
;
5494 struct nfs4_lock_state
*lsp
;
5495 struct nfs_open_context
*ctx
;
5496 struct file_lock fl
;
5497 const struct nfs_server
*server
;
5498 unsigned long timestamp
;
5501 static struct nfs4_unlockdata
*nfs4_alloc_unlockdata(struct file_lock
*fl
,
5502 struct nfs_open_context
*ctx
,
5503 struct nfs4_lock_state
*lsp
,
5504 struct nfs_seqid
*seqid
)
5506 struct nfs4_unlockdata
*p
;
5507 struct inode
*inode
= lsp
->ls_state
->inode
;
5509 p
= kzalloc(sizeof(*p
), GFP_NOFS
);
5512 p
->arg
.fh
= NFS_FH(inode
);
5514 p
->arg
.seqid
= seqid
;
5515 p
->res
.seqid
= seqid
;
5517 atomic_inc(&lsp
->ls_count
);
5518 /* Ensure we don't close file until we're done freeing locks! */
5519 p
->ctx
= get_nfs_open_context(ctx
);
5520 memcpy(&p
->fl
, fl
, sizeof(p
->fl
));
5521 p
->server
= NFS_SERVER(inode
);
5525 static void nfs4_locku_release_calldata(void *data
)
5527 struct nfs4_unlockdata
*calldata
= data
;
5528 nfs_free_seqid(calldata
->arg
.seqid
);
5529 nfs4_put_lock_state(calldata
->lsp
);
5530 put_nfs_open_context(calldata
->ctx
);
5534 static void nfs4_locku_done(struct rpc_task
*task
, void *data
)
5536 struct nfs4_unlockdata
*calldata
= data
;
5538 if (!nfs4_sequence_done(task
, &calldata
->res
.seq_res
))
5540 switch (task
->tk_status
) {
5542 renew_lease(calldata
->server
, calldata
->timestamp
);
5543 do_vfs_lock(calldata
->lsp
->ls_state
->inode
, &calldata
->fl
);
5544 if (nfs4_update_lock_stateid(calldata
->lsp
,
5545 &calldata
->res
.stateid
))
5547 case -NFS4ERR_BAD_STATEID
:
5548 case -NFS4ERR_OLD_STATEID
:
5549 case -NFS4ERR_STALE_STATEID
:
5550 case -NFS4ERR_EXPIRED
:
5551 if (!nfs4_stateid_match(&calldata
->arg
.stateid
,
5552 &calldata
->lsp
->ls_stateid
))
5553 rpc_restart_call_prepare(task
);
5556 if (nfs4_async_handle_error(task
, calldata
->server
,
5557 NULL
, NULL
) == -EAGAIN
)
5558 rpc_restart_call_prepare(task
);
5560 nfs_release_seqid(calldata
->arg
.seqid
);
5563 static void nfs4_locku_prepare(struct rpc_task
*task
, void *data
)
5565 struct nfs4_unlockdata
*calldata
= data
;
5567 if (nfs_wait_on_sequence(calldata
->arg
.seqid
, task
) != 0)
5569 nfs4_stateid_copy(&calldata
->arg
.stateid
, &calldata
->lsp
->ls_stateid
);
5570 if (test_bit(NFS_LOCK_INITIALIZED
, &calldata
->lsp
->ls_flags
) == 0) {
5571 /* Note: exit _without_ running nfs4_locku_done */
5574 calldata
->timestamp
= jiffies
;
5575 if (nfs4_setup_sequence(calldata
->server
,
5576 &calldata
->arg
.seq_args
,
5577 &calldata
->res
.seq_res
,
5579 nfs_release_seqid(calldata
->arg
.seqid
);
5582 task
->tk_action
= NULL
;
5584 nfs4_sequence_done(task
, &calldata
->res
.seq_res
);
5587 static const struct rpc_call_ops nfs4_locku_ops
= {
5588 .rpc_call_prepare
= nfs4_locku_prepare
,
5589 .rpc_call_done
= nfs4_locku_done
,
5590 .rpc_release
= nfs4_locku_release_calldata
,
5593 static struct rpc_task
*nfs4_do_unlck(struct file_lock
*fl
,
5594 struct nfs_open_context
*ctx
,
5595 struct nfs4_lock_state
*lsp
,
5596 struct nfs_seqid
*seqid
)
5598 struct nfs4_unlockdata
*data
;
5599 struct rpc_message msg
= {
5600 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCKU
],
5601 .rpc_cred
= ctx
->cred
,
5603 struct rpc_task_setup task_setup_data
= {
5604 .rpc_client
= NFS_CLIENT(lsp
->ls_state
->inode
),
5605 .rpc_message
= &msg
,
5606 .callback_ops
= &nfs4_locku_ops
,
5607 .workqueue
= nfsiod_workqueue
,
5608 .flags
= RPC_TASK_ASYNC
,
5611 nfs4_state_protect(NFS_SERVER(lsp
->ls_state
->inode
)->nfs_client
,
5612 NFS_SP4_MACH_CRED_CLEANUP
, &task_setup_data
.rpc_client
, &msg
);
5614 /* Ensure this is an unlock - when canceling a lock, the
5615 * canceled lock is passed in, and it won't be an unlock.
5617 fl
->fl_type
= F_UNLCK
;
5619 data
= nfs4_alloc_unlockdata(fl
, ctx
, lsp
, seqid
);
5621 nfs_free_seqid(seqid
);
5622 return ERR_PTR(-ENOMEM
);
5625 nfs4_init_sequence(&data
->arg
.seq_args
, &data
->res
.seq_res
, 1);
5626 msg
.rpc_argp
= &data
->arg
;
5627 msg
.rpc_resp
= &data
->res
;
5628 task_setup_data
.callback_data
= data
;
5629 return rpc_run_task(&task_setup_data
);
5632 static int nfs4_proc_unlck(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
5634 struct inode
*inode
= state
->inode
;
5635 struct nfs4_state_owner
*sp
= state
->owner
;
5636 struct nfs_inode
*nfsi
= NFS_I(inode
);
5637 struct nfs_seqid
*seqid
;
5638 struct nfs4_lock_state
*lsp
;
5639 struct rpc_task
*task
;
5640 struct nfs_seqid
*(*alloc_seqid
)(struct nfs_seqid_counter
*, gfp_t
);
5642 unsigned char fl_flags
= request
->fl_flags
;
5644 status
= nfs4_set_lock_state(state
, request
);
5645 /* Unlock _before_ we do the RPC call */
5646 request
->fl_flags
|= FL_EXISTS
;
5647 /* Exclude nfs_delegation_claim_locks() */
5648 mutex_lock(&sp
->so_delegreturn_mutex
);
5649 /* Exclude nfs4_reclaim_open_stateid() - note nesting! */
5650 down_read(&nfsi
->rwsem
);
5651 if (do_vfs_lock(inode
, request
) == -ENOENT
) {
5652 up_read(&nfsi
->rwsem
);
5653 mutex_unlock(&sp
->so_delegreturn_mutex
);
5656 up_read(&nfsi
->rwsem
);
5657 mutex_unlock(&sp
->so_delegreturn_mutex
);
5660 /* Is this a delegated lock? */
5661 lsp
= request
->fl_u
.nfs4_fl
.owner
;
5662 if (test_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
) == 0)
5664 alloc_seqid
= NFS_SERVER(inode
)->nfs_client
->cl_mvops
->alloc_seqid
;
5665 seqid
= alloc_seqid(&lsp
->ls_seqid
, GFP_KERNEL
);
5669 task
= nfs4_do_unlck(request
, nfs_file_open_context(request
->fl_file
), lsp
, seqid
);
5670 status
= PTR_ERR(task
);
5673 status
= nfs4_wait_for_completion_rpc_task(task
);
5676 request
->fl_flags
= fl_flags
;
5677 trace_nfs4_unlock(request
, state
, F_SETLK
, status
);
5681 struct nfs4_lockdata
{
5682 struct nfs_lock_args arg
;
5683 struct nfs_lock_res res
;
5684 struct nfs4_lock_state
*lsp
;
5685 struct nfs_open_context
*ctx
;
5686 struct file_lock fl
;
5687 unsigned long timestamp
;
5690 struct nfs_server
*server
;
5693 static struct nfs4_lockdata
*nfs4_alloc_lockdata(struct file_lock
*fl
,
5694 struct nfs_open_context
*ctx
, struct nfs4_lock_state
*lsp
,
5697 struct nfs4_lockdata
*p
;
5698 struct inode
*inode
= lsp
->ls_state
->inode
;
5699 struct nfs_server
*server
= NFS_SERVER(inode
);
5700 struct nfs_seqid
*(*alloc_seqid
)(struct nfs_seqid_counter
*, gfp_t
);
5702 p
= kzalloc(sizeof(*p
), gfp_mask
);
5706 p
->arg
.fh
= NFS_FH(inode
);
5708 p
->arg
.open_seqid
= nfs_alloc_seqid(&lsp
->ls_state
->owner
->so_seqid
, gfp_mask
);
5709 if (IS_ERR(p
->arg
.open_seqid
))
5711 alloc_seqid
= server
->nfs_client
->cl_mvops
->alloc_seqid
;
5712 p
->arg
.lock_seqid
= alloc_seqid(&lsp
->ls_seqid
, gfp_mask
);
5713 if (IS_ERR(p
->arg
.lock_seqid
))
5714 goto out_free_seqid
;
5715 p
->arg
.lock_owner
.clientid
= server
->nfs_client
->cl_clientid
;
5716 p
->arg
.lock_owner
.id
= lsp
->ls_seqid
.owner_id
;
5717 p
->arg
.lock_owner
.s_dev
= server
->s_dev
;
5718 p
->res
.lock_seqid
= p
->arg
.lock_seqid
;
5721 atomic_inc(&lsp
->ls_count
);
5722 p
->ctx
= get_nfs_open_context(ctx
);
5723 get_file(fl
->fl_file
);
5724 memcpy(&p
->fl
, fl
, sizeof(p
->fl
));
5727 nfs_free_seqid(p
->arg
.open_seqid
);
5733 static void nfs4_lock_prepare(struct rpc_task
*task
, void *calldata
)
5735 struct nfs4_lockdata
*data
= calldata
;
5736 struct nfs4_state
*state
= data
->lsp
->ls_state
;
5738 dprintk("%s: begin!\n", __func__
);
5739 if (nfs_wait_on_sequence(data
->arg
.lock_seqid
, task
) != 0)
5741 /* Do we need to do an open_to_lock_owner? */
5742 if (!test_bit(NFS_LOCK_INITIALIZED
, &data
->lsp
->ls_flags
)) {
5743 if (nfs_wait_on_sequence(data
->arg
.open_seqid
, task
) != 0) {
5744 goto out_release_lock_seqid
;
5746 nfs4_stateid_copy(&data
->arg
.open_stateid
,
5747 &state
->open_stateid
);
5748 data
->arg
.new_lock_owner
= 1;
5749 data
->res
.open_seqid
= data
->arg
.open_seqid
;
5751 data
->arg
.new_lock_owner
= 0;
5752 nfs4_stateid_copy(&data
->arg
.lock_stateid
,
5753 &data
->lsp
->ls_stateid
);
5755 if (!nfs4_valid_open_stateid(state
)) {
5756 data
->rpc_status
= -EBADF
;
5757 task
->tk_action
= NULL
;
5758 goto out_release_open_seqid
;
5760 data
->timestamp
= jiffies
;
5761 if (nfs4_setup_sequence(data
->server
,
5762 &data
->arg
.seq_args
,
5766 out_release_open_seqid
:
5767 nfs_release_seqid(data
->arg
.open_seqid
);
5768 out_release_lock_seqid
:
5769 nfs_release_seqid(data
->arg
.lock_seqid
);
5771 nfs4_sequence_done(task
, &data
->res
.seq_res
);
5772 dprintk("%s: done!, ret = %d\n", __func__
, data
->rpc_status
);
5775 static void nfs4_lock_done(struct rpc_task
*task
, void *calldata
)
5777 struct nfs4_lockdata
*data
= calldata
;
5778 struct nfs4_lock_state
*lsp
= data
->lsp
;
5780 dprintk("%s: begin!\n", __func__
);
5782 if (!nfs4_sequence_done(task
, &data
->res
.seq_res
))
5785 data
->rpc_status
= task
->tk_status
;
5786 switch (task
->tk_status
) {
5788 renew_lease(NFS_SERVER(d_inode(data
->ctx
->dentry
)),
5790 if (data
->arg
.new_lock
) {
5791 data
->fl
.fl_flags
&= ~(FL_SLEEP
| FL_ACCESS
);
5792 if (do_vfs_lock(lsp
->ls_state
->inode
, &data
->fl
) < 0) {
5793 rpc_restart_call_prepare(task
);
5797 if (data
->arg
.new_lock_owner
!= 0) {
5798 nfs_confirm_seqid(&lsp
->ls_seqid
, 0);
5799 nfs4_stateid_copy(&lsp
->ls_stateid
, &data
->res
.stateid
);
5800 set_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
);
5801 } else if (!nfs4_update_lock_stateid(lsp
, &data
->res
.stateid
))
5802 rpc_restart_call_prepare(task
);
5804 case -NFS4ERR_BAD_STATEID
:
5805 case -NFS4ERR_OLD_STATEID
:
5806 case -NFS4ERR_STALE_STATEID
:
5807 case -NFS4ERR_EXPIRED
:
5808 if (data
->arg
.new_lock_owner
!= 0) {
5809 if (!nfs4_stateid_match(&data
->arg
.open_stateid
,
5810 &lsp
->ls_state
->open_stateid
))
5811 rpc_restart_call_prepare(task
);
5812 } else if (!nfs4_stateid_match(&data
->arg
.lock_stateid
,
5814 rpc_restart_call_prepare(task
);
5816 dprintk("%s: done, ret = %d!\n", __func__
, data
->rpc_status
);
5819 static void nfs4_lock_release(void *calldata
)
5821 struct nfs4_lockdata
*data
= calldata
;
5823 dprintk("%s: begin!\n", __func__
);
5824 nfs_free_seqid(data
->arg
.open_seqid
);
5825 if (data
->cancelled
!= 0) {
5826 struct rpc_task
*task
;
5827 task
= nfs4_do_unlck(&data
->fl
, data
->ctx
, data
->lsp
,
5828 data
->arg
.lock_seqid
);
5830 rpc_put_task_async(task
);
5831 dprintk("%s: cancelling lock!\n", __func__
);
5833 nfs_free_seqid(data
->arg
.lock_seqid
);
5834 nfs4_put_lock_state(data
->lsp
);
5835 put_nfs_open_context(data
->ctx
);
5836 fput(data
->fl
.fl_file
);
5838 dprintk("%s: done!\n", __func__
);
5841 static const struct rpc_call_ops nfs4_lock_ops
= {
5842 .rpc_call_prepare
= nfs4_lock_prepare
,
5843 .rpc_call_done
= nfs4_lock_done
,
5844 .rpc_release
= nfs4_lock_release
,
5847 static void nfs4_handle_setlk_error(struct nfs_server
*server
, struct nfs4_lock_state
*lsp
, int new_lock_owner
, int error
)
5850 case -NFS4ERR_ADMIN_REVOKED
:
5851 case -NFS4ERR_BAD_STATEID
:
5852 lsp
->ls_seqid
.flags
&= ~NFS_SEQID_CONFIRMED
;
5853 if (new_lock_owner
!= 0 ||
5854 test_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
) != 0)
5855 nfs4_schedule_stateid_recovery(server
, lsp
->ls_state
);
5857 case -NFS4ERR_STALE_STATEID
:
5858 lsp
->ls_seqid
.flags
&= ~NFS_SEQID_CONFIRMED
;
5859 case -NFS4ERR_EXPIRED
:
5860 nfs4_schedule_lease_recovery(server
->nfs_client
);
5864 static int _nfs4_do_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*fl
, int recovery_type
)
5866 struct nfs4_lockdata
*data
;
5867 struct rpc_task
*task
;
5868 struct rpc_message msg
= {
5869 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCK
],
5870 .rpc_cred
= state
->owner
->so_cred
,
5872 struct rpc_task_setup task_setup_data
= {
5873 .rpc_client
= NFS_CLIENT(state
->inode
),
5874 .rpc_message
= &msg
,
5875 .callback_ops
= &nfs4_lock_ops
,
5876 .workqueue
= nfsiod_workqueue
,
5877 .flags
= RPC_TASK_ASYNC
,
5881 dprintk("%s: begin!\n", __func__
);
5882 data
= nfs4_alloc_lockdata(fl
, nfs_file_open_context(fl
->fl_file
),
5883 fl
->fl_u
.nfs4_fl
.owner
,
5884 recovery_type
== NFS_LOCK_NEW
? GFP_KERNEL
: GFP_NOFS
);
5888 data
->arg
.block
= 1;
5889 nfs4_init_sequence(&data
->arg
.seq_args
, &data
->res
.seq_res
, 1);
5890 msg
.rpc_argp
= &data
->arg
;
5891 msg
.rpc_resp
= &data
->res
;
5892 task_setup_data
.callback_data
= data
;
5893 if (recovery_type
> NFS_LOCK_NEW
) {
5894 if (recovery_type
== NFS_LOCK_RECLAIM
)
5895 data
->arg
.reclaim
= NFS_LOCK_RECLAIM
;
5896 nfs4_set_sequence_privileged(&data
->arg
.seq_args
);
5898 data
->arg
.new_lock
= 1;
5899 task
= rpc_run_task(&task_setup_data
);
5901 return PTR_ERR(task
);
5902 ret
= nfs4_wait_for_completion_rpc_task(task
);
5904 ret
= data
->rpc_status
;
5906 nfs4_handle_setlk_error(data
->server
, data
->lsp
,
5907 data
->arg
.new_lock_owner
, ret
);
5909 data
->cancelled
= 1;
5911 dprintk("%s: done, ret = %d!\n", __func__
, ret
);
5915 static int nfs4_lock_reclaim(struct nfs4_state
*state
, struct file_lock
*request
)
5917 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
5918 struct nfs4_exception exception
= {
5919 .inode
= state
->inode
,
5924 /* Cache the lock if possible... */
5925 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) != 0)
5927 err
= _nfs4_do_setlk(state
, F_SETLK
, request
, NFS_LOCK_RECLAIM
);
5928 trace_nfs4_lock_reclaim(request
, state
, F_SETLK
, err
);
5929 if (err
!= -NFS4ERR_DELAY
)
5931 nfs4_handle_exception(server
, err
, &exception
);
5932 } while (exception
.retry
);
5936 static int nfs4_lock_expired(struct nfs4_state
*state
, struct file_lock
*request
)
5938 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
5939 struct nfs4_exception exception
= {
5940 .inode
= state
->inode
,
5944 err
= nfs4_set_lock_state(state
, request
);
5947 if (!recover_lost_locks
) {
5948 set_bit(NFS_LOCK_LOST
, &request
->fl_u
.nfs4_fl
.owner
->ls_flags
);
5952 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) != 0)
5954 err
= _nfs4_do_setlk(state
, F_SETLK
, request
, NFS_LOCK_EXPIRED
);
5955 trace_nfs4_lock_expired(request
, state
, F_SETLK
, err
);
5959 case -NFS4ERR_GRACE
:
5960 case -NFS4ERR_DELAY
:
5961 nfs4_handle_exception(server
, err
, &exception
);
5964 } while (exception
.retry
);
5969 #if defined(CONFIG_NFS_V4_1)
5971 * nfs41_check_expired_locks - possibly free a lock stateid
5973 * @state: NFSv4 state for an inode
5975 * Returns NFS_OK if recovery for this stateid is now finished.
5976 * Otherwise a negative NFS4ERR value is returned.
5978 static int nfs41_check_expired_locks(struct nfs4_state
*state
)
5980 int status
, ret
= -NFS4ERR_BAD_STATEID
;
5981 struct nfs4_lock_state
*lsp
;
5982 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
5984 list_for_each_entry(lsp
, &state
->lock_states
, ls_locks
) {
5985 if (test_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
)) {
5986 struct rpc_cred
*cred
= lsp
->ls_state
->owner
->so_cred
;
5988 status
= nfs41_test_stateid(server
,
5991 trace_nfs4_test_lock_stateid(state
, lsp
, status
);
5992 if (status
!= NFS_OK
) {
5993 /* Free the stateid unless the server
5994 * informs us the stateid is unrecognized. */
5995 if (status
!= -NFS4ERR_BAD_STATEID
)
5996 nfs41_free_stateid(server
,
5999 clear_bit(NFS_LOCK_INITIALIZED
, &lsp
->ls_flags
);
6008 static int nfs41_lock_expired(struct nfs4_state
*state
, struct file_lock
*request
)
6010 int status
= NFS_OK
;
6012 if (test_bit(LK_STATE_IN_USE
, &state
->flags
))
6013 status
= nfs41_check_expired_locks(state
);
6014 if (status
!= NFS_OK
)
6015 status
= nfs4_lock_expired(state
, request
);
6020 static int _nfs4_proc_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
6022 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
6023 unsigned char fl_flags
= request
->fl_flags
;
6024 int status
= -ENOLCK
;
6026 if ((fl_flags
& FL_POSIX
) &&
6027 !test_bit(NFS_STATE_POSIX_LOCKS
, &state
->flags
))
6029 /* Is this a delegated open? */
6030 status
= nfs4_set_lock_state(state
, request
);
6033 request
->fl_flags
|= FL_ACCESS
;
6034 status
= do_vfs_lock(state
->inode
, request
);
6037 down_read(&nfsi
->rwsem
);
6038 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
)) {
6039 /* Yes: cache locks! */
6040 /* ...but avoid races with delegation recall... */
6041 request
->fl_flags
= fl_flags
& ~FL_SLEEP
;
6042 status
= do_vfs_lock(state
->inode
, request
);
6043 up_read(&nfsi
->rwsem
);
6046 up_read(&nfsi
->rwsem
);
6047 status
= _nfs4_do_setlk(state
, cmd
, request
, NFS_LOCK_NEW
);
6049 request
->fl_flags
= fl_flags
;
6053 static int nfs4_proc_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
6055 struct nfs4_exception exception
= {
6057 .inode
= state
->inode
,
6062 err
= _nfs4_proc_setlk(state
, cmd
, request
);
6063 trace_nfs4_set_lock(request
, state
, cmd
, err
);
6064 if (err
== -NFS4ERR_DENIED
)
6066 err
= nfs4_handle_exception(NFS_SERVER(state
->inode
),
6068 } while (exception
.retry
);
6073 nfs4_proc_lock(struct file
*filp
, int cmd
, struct file_lock
*request
)
6075 struct nfs_open_context
*ctx
;
6076 struct nfs4_state
*state
;
6077 unsigned long timeout
= NFS4_LOCK_MINTIMEOUT
;
6080 /* verify open state */
6081 ctx
= nfs_file_open_context(filp
);
6084 if (request
->fl_start
< 0 || request
->fl_end
< 0)
6087 if (IS_GETLK(cmd
)) {
6089 return nfs4_proc_getlk(state
, F_GETLK
, request
);
6093 if (!(IS_SETLK(cmd
) || IS_SETLKW(cmd
)))
6096 if (request
->fl_type
== F_UNLCK
) {
6098 return nfs4_proc_unlck(state
, cmd
, request
);
6105 * Don't rely on the VFS having checked the file open mode,
6106 * since it won't do this for flock() locks.
6108 switch (request
->fl_type
) {
6110 if (!(filp
->f_mode
& FMODE_READ
))
6114 if (!(filp
->f_mode
& FMODE_WRITE
))
6119 status
= nfs4_proc_setlk(state
, cmd
, request
);
6120 if ((status
!= -EAGAIN
) || IS_SETLK(cmd
))
6122 timeout
= nfs4_set_lock_task_retry(timeout
);
6123 status
= -ERESTARTSYS
;
6126 } while(status
< 0);
6130 int nfs4_lock_delegation_recall(struct file_lock
*fl
, struct nfs4_state
*state
, const nfs4_stateid
*stateid
)
6132 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
6135 err
= nfs4_set_lock_state(state
, fl
);
6138 err
= _nfs4_do_setlk(state
, F_SETLK
, fl
, NFS_LOCK_NEW
);
6139 return nfs4_handle_delegation_recall_error(server
, state
, stateid
, err
);
6142 struct nfs_release_lockowner_data
{
6143 struct nfs4_lock_state
*lsp
;
6144 struct nfs_server
*server
;
6145 struct nfs_release_lockowner_args args
;
6146 struct nfs_release_lockowner_res res
;
6147 unsigned long timestamp
;
6150 static void nfs4_release_lockowner_prepare(struct rpc_task
*task
, void *calldata
)
6152 struct nfs_release_lockowner_data
*data
= calldata
;
6153 struct nfs_server
*server
= data
->server
;
6154 nfs40_setup_sequence(server
->nfs_client
->cl_slot_tbl
,
6155 &data
->args
.seq_args
, &data
->res
.seq_res
, task
);
6156 data
->args
.lock_owner
.clientid
= server
->nfs_client
->cl_clientid
;
6157 data
->timestamp
= jiffies
;
6160 static void nfs4_release_lockowner_done(struct rpc_task
*task
, void *calldata
)
6162 struct nfs_release_lockowner_data
*data
= calldata
;
6163 struct nfs_server
*server
= data
->server
;
6165 nfs40_sequence_done(task
, &data
->res
.seq_res
);
6167 switch (task
->tk_status
) {
6169 renew_lease(server
, data
->timestamp
);
6171 case -NFS4ERR_STALE_CLIENTID
:
6172 case -NFS4ERR_EXPIRED
:
6173 nfs4_schedule_lease_recovery(server
->nfs_client
);
6175 case -NFS4ERR_LEASE_MOVED
:
6176 case -NFS4ERR_DELAY
:
6177 if (nfs4_async_handle_error(task
, server
,
6178 NULL
, NULL
) == -EAGAIN
)
6179 rpc_restart_call_prepare(task
);
6183 static void nfs4_release_lockowner_release(void *calldata
)
6185 struct nfs_release_lockowner_data
*data
= calldata
;
6186 nfs4_free_lock_state(data
->server
, data
->lsp
);
6190 static const struct rpc_call_ops nfs4_release_lockowner_ops
= {
6191 .rpc_call_prepare
= nfs4_release_lockowner_prepare
,
6192 .rpc_call_done
= nfs4_release_lockowner_done
,
6193 .rpc_release
= nfs4_release_lockowner_release
,
6197 nfs4_release_lockowner(struct nfs_server
*server
, struct nfs4_lock_state
*lsp
)
6199 struct nfs_release_lockowner_data
*data
;
6200 struct rpc_message msg
= {
6201 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RELEASE_LOCKOWNER
],
6204 if (server
->nfs_client
->cl_mvops
->minor_version
!= 0)
6207 data
= kmalloc(sizeof(*data
), GFP_NOFS
);
6211 data
->server
= server
;
6212 data
->args
.lock_owner
.clientid
= server
->nfs_client
->cl_clientid
;
6213 data
->args
.lock_owner
.id
= lsp
->ls_seqid
.owner_id
;
6214 data
->args
.lock_owner
.s_dev
= server
->s_dev
;
6216 msg
.rpc_argp
= &data
->args
;
6217 msg
.rpc_resp
= &data
->res
;
6218 nfs4_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 0);
6219 rpc_call_async(server
->client
, &msg
, 0, &nfs4_release_lockowner_ops
, data
);
6222 #define XATTR_NAME_NFSV4_ACL "system.nfs4_acl"
6224 static int nfs4_xattr_set_nfs4_acl(struct dentry
*dentry
, const char *key
,
6225 const void *buf
, size_t buflen
,
6226 int flags
, int type
)
6228 if (strcmp(key
, "") != 0)
6231 return nfs4_proc_set_acl(d_inode(dentry
), buf
, buflen
);
6234 static int nfs4_xattr_get_nfs4_acl(struct dentry
*dentry
, const char *key
,
6235 void *buf
, size_t buflen
, int type
)
6237 if (strcmp(key
, "") != 0)
6240 return nfs4_proc_get_acl(d_inode(dentry
), buf
, buflen
);
6243 static size_t nfs4_xattr_list_nfs4_acl(struct dentry
*dentry
, char *list
,
6244 size_t list_len
, const char *name
,
6245 size_t name_len
, int type
)
6247 size_t len
= sizeof(XATTR_NAME_NFSV4_ACL
);
6249 if (!nfs4_server_supports_acls(NFS_SERVER(d_inode(dentry
))))
6252 if (list
&& len
<= list_len
)
6253 memcpy(list
, XATTR_NAME_NFSV4_ACL
, len
);
6257 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
6258 static inline int nfs4_server_supports_labels(struct nfs_server
*server
)
6260 return server
->caps
& NFS_CAP_SECURITY_LABEL
;
6263 static int nfs4_xattr_set_nfs4_label(struct dentry
*dentry
, const char *key
,
6264 const void *buf
, size_t buflen
,
6265 int flags
, int type
)
6267 if (security_ismaclabel(key
))
6268 return nfs4_set_security_label(dentry
, buf
, buflen
);
6273 static int nfs4_xattr_get_nfs4_label(struct dentry
*dentry
, const char *key
,
6274 void *buf
, size_t buflen
, int type
)
6276 if (security_ismaclabel(key
))
6277 return nfs4_get_security_label(d_inode(dentry
), buf
, buflen
);
6281 static size_t nfs4_xattr_list_nfs4_label(struct dentry
*dentry
, char *list
,
6282 size_t list_len
, const char *name
,
6283 size_t name_len
, int type
)
6287 if (nfs_server_capable(d_inode(dentry
), NFS_CAP_SECURITY_LABEL
)) {
6288 len
= security_inode_listsecurity(d_inode(dentry
), NULL
, 0);
6289 if (list
&& len
<= list_len
)
6290 security_inode_listsecurity(d_inode(dentry
), list
, len
);
6295 static const struct xattr_handler nfs4_xattr_nfs4_label_handler
= {
6296 .prefix
= XATTR_SECURITY_PREFIX
,
6297 .list
= nfs4_xattr_list_nfs4_label
,
6298 .get
= nfs4_xattr_get_nfs4_label
,
6299 .set
= nfs4_xattr_set_nfs4_label
,
6305 * nfs_fhget will use either the mounted_on_fileid or the fileid
6307 static void nfs_fixup_referral_attributes(struct nfs_fattr
*fattr
)
6309 if (!(((fattr
->valid
& NFS_ATTR_FATTR_MOUNTED_ON_FILEID
) ||
6310 (fattr
->valid
& NFS_ATTR_FATTR_FILEID
)) &&
6311 (fattr
->valid
& NFS_ATTR_FATTR_FSID
) &&
6312 (fattr
->valid
& NFS_ATTR_FATTR_V4_LOCATIONS
)))
6315 fattr
->valid
|= NFS_ATTR_FATTR_TYPE
| NFS_ATTR_FATTR_MODE
|
6316 NFS_ATTR_FATTR_NLINK
| NFS_ATTR_FATTR_V4_REFERRAL
;
6317 fattr
->mode
= S_IFDIR
| S_IRUGO
| S_IXUGO
;
6321 static int _nfs4_proc_fs_locations(struct rpc_clnt
*client
, struct inode
*dir
,
6322 const struct qstr
*name
,
6323 struct nfs4_fs_locations
*fs_locations
,
6326 struct nfs_server
*server
= NFS_SERVER(dir
);
6328 [0] = FATTR4_WORD0_FSID
| FATTR4_WORD0_FS_LOCATIONS
,
6330 struct nfs4_fs_locations_arg args
= {
6331 .dir_fh
= NFS_FH(dir
),
6336 struct nfs4_fs_locations_res res
= {
6337 .fs_locations
= fs_locations
,
6339 struct rpc_message msg
= {
6340 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FS_LOCATIONS
],
6346 dprintk("%s: start\n", __func__
);
6348 /* Ask for the fileid of the absent filesystem if mounted_on_fileid
6349 * is not supported */
6350 if (NFS_SERVER(dir
)->attr_bitmask
[1] & FATTR4_WORD1_MOUNTED_ON_FILEID
)
6351 bitmask
[1] |= FATTR4_WORD1_MOUNTED_ON_FILEID
;
6353 bitmask
[0] |= FATTR4_WORD0_FILEID
;
6355 nfs_fattr_init(&fs_locations
->fattr
);
6356 fs_locations
->server
= server
;
6357 fs_locations
->nlocations
= 0;
6358 status
= nfs4_call_sync(client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
6359 dprintk("%s: returned status = %d\n", __func__
, status
);
6363 int nfs4_proc_fs_locations(struct rpc_clnt
*client
, struct inode
*dir
,
6364 const struct qstr
*name
,
6365 struct nfs4_fs_locations
*fs_locations
,
6368 struct nfs4_exception exception
= { };
6371 err
= _nfs4_proc_fs_locations(client
, dir
, name
,
6372 fs_locations
, page
);
6373 trace_nfs4_get_fs_locations(dir
, name
, err
);
6374 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
6376 } while (exception
.retry
);
6381 * This operation also signals the server that this client is
6382 * performing migration recovery. The server can stop returning
6383 * NFS4ERR_LEASE_MOVED to this client. A RENEW operation is
6384 * appended to this compound to identify the client ID which is
6385 * performing recovery.
6387 static int _nfs40_proc_get_locations(struct inode
*inode
,
6388 struct nfs4_fs_locations
*locations
,
6389 struct page
*page
, struct rpc_cred
*cred
)
6391 struct nfs_server
*server
= NFS_SERVER(inode
);
6392 struct rpc_clnt
*clnt
= server
->client
;
6394 [0] = FATTR4_WORD0_FSID
| FATTR4_WORD0_FS_LOCATIONS
,
6396 struct nfs4_fs_locations_arg args
= {
6397 .clientid
= server
->nfs_client
->cl_clientid
,
6398 .fh
= NFS_FH(inode
),
6401 .migration
= 1, /* skip LOOKUP */
6402 .renew
= 1, /* append RENEW */
6404 struct nfs4_fs_locations_res res
= {
6405 .fs_locations
= locations
,
6409 struct rpc_message msg
= {
6410 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FS_LOCATIONS
],
6415 unsigned long now
= jiffies
;
6418 nfs_fattr_init(&locations
->fattr
);
6419 locations
->server
= server
;
6420 locations
->nlocations
= 0;
6422 nfs4_init_sequence(&args
.seq_args
, &res
.seq_res
, 0);
6423 nfs4_set_sequence_privileged(&args
.seq_args
);
6424 status
= nfs4_call_sync_sequence(clnt
, server
, &msg
,
6425 &args
.seq_args
, &res
.seq_res
);
6429 renew_lease(server
, now
);
6433 #ifdef CONFIG_NFS_V4_1
6436 * This operation also signals the server that this client is
6437 * performing migration recovery. The server can stop asserting
6438 * SEQ4_STATUS_LEASE_MOVED for this client. The client ID
6439 * performing this operation is identified in the SEQUENCE
6440 * operation in this compound.
6442 * When the client supports GETATTR(fs_locations_info), it can
6443 * be plumbed in here.
6445 static int _nfs41_proc_get_locations(struct inode
*inode
,
6446 struct nfs4_fs_locations
*locations
,
6447 struct page
*page
, struct rpc_cred
*cred
)
6449 struct nfs_server
*server
= NFS_SERVER(inode
);
6450 struct rpc_clnt
*clnt
= server
->client
;
6452 [0] = FATTR4_WORD0_FSID
| FATTR4_WORD0_FS_LOCATIONS
,
6454 struct nfs4_fs_locations_arg args
= {
6455 .fh
= NFS_FH(inode
),
6458 .migration
= 1, /* skip LOOKUP */
6460 struct nfs4_fs_locations_res res
= {
6461 .fs_locations
= locations
,
6464 struct rpc_message msg
= {
6465 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FS_LOCATIONS
],
6472 nfs_fattr_init(&locations
->fattr
);
6473 locations
->server
= server
;
6474 locations
->nlocations
= 0;
6476 nfs4_init_sequence(&args
.seq_args
, &res
.seq_res
, 0);
6477 nfs4_set_sequence_privileged(&args
.seq_args
);
6478 status
= nfs4_call_sync_sequence(clnt
, server
, &msg
,
6479 &args
.seq_args
, &res
.seq_res
);
6480 if (status
== NFS4_OK
&&
6481 res
.seq_res
.sr_status_flags
& SEQ4_STATUS_LEASE_MOVED
)
6482 status
= -NFS4ERR_LEASE_MOVED
;
6486 #endif /* CONFIG_NFS_V4_1 */
6489 * nfs4_proc_get_locations - discover locations for a migrated FSID
6490 * @inode: inode on FSID that is migrating
6491 * @locations: result of query
6493 * @cred: credential to use for this operation
6495 * Returns NFS4_OK on success, a negative NFS4ERR status code if the
6496 * operation failed, or a negative errno if a local error occurred.
6498 * On success, "locations" is filled in, but if the server has
6499 * no locations information, NFS_ATTR_FATTR_V4_LOCATIONS is not
6502 * -NFS4ERR_LEASE_MOVED is returned if the server still has leases
6503 * from this client that require migration recovery.
6505 int nfs4_proc_get_locations(struct inode
*inode
,
6506 struct nfs4_fs_locations
*locations
,
6507 struct page
*page
, struct rpc_cred
*cred
)
6509 struct nfs_server
*server
= NFS_SERVER(inode
);
6510 struct nfs_client
*clp
= server
->nfs_client
;
6511 const struct nfs4_mig_recovery_ops
*ops
=
6512 clp
->cl_mvops
->mig_recovery_ops
;
6513 struct nfs4_exception exception
= { };
6516 dprintk("%s: FSID %llx:%llx on \"%s\"\n", __func__
,
6517 (unsigned long long)server
->fsid
.major
,
6518 (unsigned long long)server
->fsid
.minor
,
6520 nfs_display_fhandle(NFS_FH(inode
), __func__
);
6523 status
= ops
->get_locations(inode
, locations
, page
, cred
);
6524 if (status
!= -NFS4ERR_DELAY
)
6526 nfs4_handle_exception(server
, status
, &exception
);
6527 } while (exception
.retry
);
6532 * This operation also signals the server that this client is
6533 * performing "lease moved" recovery. The server can stop
6534 * returning NFS4ERR_LEASE_MOVED to this client. A RENEW operation
6535 * is appended to this compound to identify the client ID which is
6536 * performing recovery.
6538 static int _nfs40_proc_fsid_present(struct inode
*inode
, struct rpc_cred
*cred
)
6540 struct nfs_server
*server
= NFS_SERVER(inode
);
6541 struct nfs_client
*clp
= NFS_SERVER(inode
)->nfs_client
;
6542 struct rpc_clnt
*clnt
= server
->client
;
6543 struct nfs4_fsid_present_arg args
= {
6544 .fh
= NFS_FH(inode
),
6545 .clientid
= clp
->cl_clientid
,
6546 .renew
= 1, /* append RENEW */
6548 struct nfs4_fsid_present_res res
= {
6551 struct rpc_message msg
= {
6552 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FSID_PRESENT
],
6557 unsigned long now
= jiffies
;
6560 res
.fh
= nfs_alloc_fhandle();
6564 nfs4_init_sequence(&args
.seq_args
, &res
.seq_res
, 0);
6565 nfs4_set_sequence_privileged(&args
.seq_args
);
6566 status
= nfs4_call_sync_sequence(clnt
, server
, &msg
,
6567 &args
.seq_args
, &res
.seq_res
);
6568 nfs_free_fhandle(res
.fh
);
6572 do_renew_lease(clp
, now
);
6576 #ifdef CONFIG_NFS_V4_1
6579 * This operation also signals the server that this client is
6580 * performing "lease moved" recovery. The server can stop asserting
6581 * SEQ4_STATUS_LEASE_MOVED for this client. The client ID performing
6582 * this operation is identified in the SEQUENCE operation in this
6585 static int _nfs41_proc_fsid_present(struct inode
*inode
, struct rpc_cred
*cred
)
6587 struct nfs_server
*server
= NFS_SERVER(inode
);
6588 struct rpc_clnt
*clnt
= server
->client
;
6589 struct nfs4_fsid_present_arg args
= {
6590 .fh
= NFS_FH(inode
),
6592 struct nfs4_fsid_present_res res
= {
6594 struct rpc_message msg
= {
6595 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FSID_PRESENT
],
6602 res
.fh
= nfs_alloc_fhandle();
6606 nfs4_init_sequence(&args
.seq_args
, &res
.seq_res
, 0);
6607 nfs4_set_sequence_privileged(&args
.seq_args
);
6608 status
= nfs4_call_sync_sequence(clnt
, server
, &msg
,
6609 &args
.seq_args
, &res
.seq_res
);
6610 nfs_free_fhandle(res
.fh
);
6611 if (status
== NFS4_OK
&&
6612 res
.seq_res
.sr_status_flags
& SEQ4_STATUS_LEASE_MOVED
)
6613 status
= -NFS4ERR_LEASE_MOVED
;
6617 #endif /* CONFIG_NFS_V4_1 */
6620 * nfs4_proc_fsid_present - Is this FSID present or absent on server?
6621 * @inode: inode on FSID to check
6622 * @cred: credential to use for this operation
6624 * Server indicates whether the FSID is present, moved, or not
6625 * recognized. This operation is necessary to clear a LEASE_MOVED
6626 * condition for this client ID.
6628 * Returns NFS4_OK if the FSID is present on this server,
6629 * -NFS4ERR_MOVED if the FSID is no longer present, a negative
6630 * NFS4ERR code if some error occurred on the server, or a
6631 * negative errno if a local failure occurred.
6633 int nfs4_proc_fsid_present(struct inode
*inode
, struct rpc_cred
*cred
)
6635 struct nfs_server
*server
= NFS_SERVER(inode
);
6636 struct nfs_client
*clp
= server
->nfs_client
;
6637 const struct nfs4_mig_recovery_ops
*ops
=
6638 clp
->cl_mvops
->mig_recovery_ops
;
6639 struct nfs4_exception exception
= { };
6642 dprintk("%s: FSID %llx:%llx on \"%s\"\n", __func__
,
6643 (unsigned long long)server
->fsid
.major
,
6644 (unsigned long long)server
->fsid
.minor
,
6646 nfs_display_fhandle(NFS_FH(inode
), __func__
);
6649 status
= ops
->fsid_present(inode
, cred
);
6650 if (status
!= -NFS4ERR_DELAY
)
6652 nfs4_handle_exception(server
, status
, &exception
);
6653 } while (exception
.retry
);
6658 * If 'use_integrity' is true and the state managment nfs_client
6659 * cl_rpcclient is using krb5i/p, use the integrity protected cl_rpcclient
6660 * and the machine credential as per RFC3530bis and RFC5661 Security
6661 * Considerations sections. Otherwise, just use the user cred with the
6662 * filesystem's rpc_client.
6664 static int _nfs4_proc_secinfo(struct inode
*dir
, const struct qstr
*name
, struct nfs4_secinfo_flavors
*flavors
, bool use_integrity
)
6667 struct nfs4_secinfo_arg args
= {
6668 .dir_fh
= NFS_FH(dir
),
6671 struct nfs4_secinfo_res res
= {
6674 struct rpc_message msg
= {
6675 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SECINFO
],
6679 struct rpc_clnt
*clnt
= NFS_SERVER(dir
)->client
;
6680 struct rpc_cred
*cred
= NULL
;
6682 if (use_integrity
) {
6683 clnt
= NFS_SERVER(dir
)->nfs_client
->cl_rpcclient
;
6684 cred
= nfs4_get_clid_cred(NFS_SERVER(dir
)->nfs_client
);
6685 msg
.rpc_cred
= cred
;
6688 dprintk("NFS call secinfo %s\n", name
->name
);
6690 nfs4_state_protect(NFS_SERVER(dir
)->nfs_client
,
6691 NFS_SP4_MACH_CRED_SECINFO
, &clnt
, &msg
);
6693 status
= nfs4_call_sync(clnt
, NFS_SERVER(dir
), &msg
, &args
.seq_args
,
6695 dprintk("NFS reply secinfo: %d\n", status
);
6703 int nfs4_proc_secinfo(struct inode
*dir
, const struct qstr
*name
,
6704 struct nfs4_secinfo_flavors
*flavors
)
6706 struct nfs4_exception exception
= { };
6709 err
= -NFS4ERR_WRONGSEC
;
6711 /* try to use integrity protection with machine cred */
6712 if (_nfs4_is_integrity_protected(NFS_SERVER(dir
)->nfs_client
))
6713 err
= _nfs4_proc_secinfo(dir
, name
, flavors
, true);
6716 * if unable to use integrity protection, or SECINFO with
6717 * integrity protection returns NFS4ERR_WRONGSEC (which is
6718 * disallowed by spec, but exists in deployed servers) use
6719 * the current filesystem's rpc_client and the user cred.
6721 if (err
== -NFS4ERR_WRONGSEC
)
6722 err
= _nfs4_proc_secinfo(dir
, name
, flavors
, false);
6724 trace_nfs4_secinfo(dir
, name
, err
);
6725 err
= nfs4_handle_exception(NFS_SERVER(dir
), err
,
6727 } while (exception
.retry
);
6731 #ifdef CONFIG_NFS_V4_1
6733 * Check the exchange flags returned by the server for invalid flags, having
6734 * both PNFS and NON_PNFS flags set, and not having one of NON_PNFS, PNFS, or
6737 static int nfs4_check_cl_exchange_flags(u32 flags
)
6739 if (flags
& ~EXCHGID4_FLAG_MASK_R
)
6741 if ((flags
& EXCHGID4_FLAG_USE_PNFS_MDS
) &&
6742 (flags
& EXCHGID4_FLAG_USE_NON_PNFS
))
6744 if (!(flags
& (EXCHGID4_FLAG_MASK_PNFS
)))
6748 return -NFS4ERR_INVAL
;
6752 nfs41_same_server_scope(struct nfs41_server_scope
*a
,
6753 struct nfs41_server_scope
*b
)
6755 if (a
->server_scope_sz
== b
->server_scope_sz
&&
6756 memcmp(a
->server_scope
, b
->server_scope
, a
->server_scope_sz
) == 0)
6763 * nfs4_proc_bind_conn_to_session()
6765 * The 4.1 client currently uses the same TCP connection for the
6766 * fore and backchannel.
6768 int nfs4_proc_bind_conn_to_session(struct nfs_client
*clp
, struct rpc_cred
*cred
)
6771 struct nfs41_bind_conn_to_session_args args
= {
6773 .dir
= NFS4_CDFC4_FORE_OR_BOTH
,
6775 struct nfs41_bind_conn_to_session_res res
;
6776 struct rpc_message msg
= {
6778 &nfs4_procedures
[NFSPROC4_CLNT_BIND_CONN_TO_SESSION
],
6784 dprintk("--> %s\n", __func__
);
6786 nfs4_copy_sessionid(&args
.sessionid
, &clp
->cl_session
->sess_id
);
6787 if (!(clp
->cl_session
->flags
& SESSION4_BACK_CHAN
))
6788 args
.dir
= NFS4_CDFC4_FORE
;
6790 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
6791 trace_nfs4_bind_conn_to_session(clp
, status
);
6793 if (memcmp(res
.sessionid
.data
,
6794 clp
->cl_session
->sess_id
.data
, NFS4_MAX_SESSIONID_LEN
)) {
6795 dprintk("NFS: %s: Session ID mismatch\n", __func__
);
6799 if ((res
.dir
& args
.dir
) != res
.dir
|| res
.dir
== 0) {
6800 dprintk("NFS: %s: Unexpected direction from server\n",
6805 if (res
.use_conn_in_rdma_mode
!= args
.use_conn_in_rdma_mode
) {
6806 dprintk("NFS: %s: Server returned RDMA mode = true\n",
6813 dprintk("<-- %s status= %d\n", __func__
, status
);
6818 * Minimum set of SP4_MACH_CRED operations from RFC 5661 in the enforce map
6819 * and operations we'd like to see to enable certain features in the allow map
6821 static const struct nfs41_state_protection nfs4_sp4_mach_cred_request
= {
6822 .how
= SP4_MACH_CRED
,
6823 .enforce
.u
.words
= {
6824 [1] = 1 << (OP_BIND_CONN_TO_SESSION
- 32) |
6825 1 << (OP_EXCHANGE_ID
- 32) |
6826 1 << (OP_CREATE_SESSION
- 32) |
6827 1 << (OP_DESTROY_SESSION
- 32) |
6828 1 << (OP_DESTROY_CLIENTID
- 32)
6831 [0] = 1 << (OP_CLOSE
) |
6834 [1] = 1 << (OP_SECINFO
- 32) |
6835 1 << (OP_SECINFO_NO_NAME
- 32) |
6836 1 << (OP_TEST_STATEID
- 32) |
6837 1 << (OP_FREE_STATEID
- 32) |
6838 1 << (OP_WRITE
- 32)
6843 * Select the state protection mode for client `clp' given the server results
6844 * from exchange_id in `sp'.
6846 * Returns 0 on success, negative errno otherwise.
6848 static int nfs4_sp4_select_mode(struct nfs_client
*clp
,
6849 struct nfs41_state_protection
*sp
)
6851 static const u32 supported_enforce
[NFS4_OP_MAP_NUM_WORDS
] = {
6852 [1] = 1 << (OP_BIND_CONN_TO_SESSION
- 32) |
6853 1 << (OP_EXCHANGE_ID
- 32) |
6854 1 << (OP_CREATE_SESSION
- 32) |
6855 1 << (OP_DESTROY_SESSION
- 32) |
6856 1 << (OP_DESTROY_CLIENTID
- 32)
6860 if (sp
->how
== SP4_MACH_CRED
) {
6861 /* Print state protect result */
6862 dfprintk(MOUNT
, "Server SP4_MACH_CRED support:\n");
6863 for (i
= 0; i
<= LAST_NFS4_OP
; i
++) {
6864 if (test_bit(i
, sp
->enforce
.u
.longs
))
6865 dfprintk(MOUNT
, " enforce op %d\n", i
);
6866 if (test_bit(i
, sp
->allow
.u
.longs
))
6867 dfprintk(MOUNT
, " allow op %d\n", i
);
6870 /* make sure nothing is on enforce list that isn't supported */
6871 for (i
= 0; i
< NFS4_OP_MAP_NUM_WORDS
; i
++) {
6872 if (sp
->enforce
.u
.words
[i
] & ~supported_enforce
[i
]) {
6873 dfprintk(MOUNT
, "sp4_mach_cred: disabled\n");
6879 * Minimal mode - state operations are allowed to use machine
6880 * credential. Note this already happens by default, so the
6881 * client doesn't have to do anything more than the negotiation.
6883 * NOTE: we don't care if EXCHANGE_ID is in the list -
6884 * we're already using the machine cred for exchange_id
6885 * and will never use a different cred.
6887 if (test_bit(OP_BIND_CONN_TO_SESSION
, sp
->enforce
.u
.longs
) &&
6888 test_bit(OP_CREATE_SESSION
, sp
->enforce
.u
.longs
) &&
6889 test_bit(OP_DESTROY_SESSION
, sp
->enforce
.u
.longs
) &&
6890 test_bit(OP_DESTROY_CLIENTID
, sp
->enforce
.u
.longs
)) {
6891 dfprintk(MOUNT
, "sp4_mach_cred:\n");
6892 dfprintk(MOUNT
, " minimal mode enabled\n");
6893 set_bit(NFS_SP4_MACH_CRED_MINIMAL
, &clp
->cl_sp4_flags
);
6895 dfprintk(MOUNT
, "sp4_mach_cred: disabled\n");
6899 if (test_bit(OP_CLOSE
, sp
->allow
.u
.longs
) &&
6900 test_bit(OP_LOCKU
, sp
->allow
.u
.longs
)) {
6901 dfprintk(MOUNT
, " cleanup mode enabled\n");
6902 set_bit(NFS_SP4_MACH_CRED_CLEANUP
, &clp
->cl_sp4_flags
);
6905 if (test_bit(OP_SECINFO
, sp
->allow
.u
.longs
) &&
6906 test_bit(OP_SECINFO_NO_NAME
, sp
->allow
.u
.longs
)) {
6907 dfprintk(MOUNT
, " secinfo mode enabled\n");
6908 set_bit(NFS_SP4_MACH_CRED_SECINFO
, &clp
->cl_sp4_flags
);
6911 if (test_bit(OP_TEST_STATEID
, sp
->allow
.u
.longs
) &&
6912 test_bit(OP_FREE_STATEID
, sp
->allow
.u
.longs
)) {
6913 dfprintk(MOUNT
, " stateid mode enabled\n");
6914 set_bit(NFS_SP4_MACH_CRED_STATEID
, &clp
->cl_sp4_flags
);
6917 if (test_bit(OP_WRITE
, sp
->allow
.u
.longs
)) {
6918 dfprintk(MOUNT
, " write mode enabled\n");
6919 set_bit(NFS_SP4_MACH_CRED_WRITE
, &clp
->cl_sp4_flags
);
6922 if (test_bit(OP_COMMIT
, sp
->allow
.u
.longs
)) {
6923 dfprintk(MOUNT
, " commit mode enabled\n");
6924 set_bit(NFS_SP4_MACH_CRED_COMMIT
, &clp
->cl_sp4_flags
);
6932 * _nfs4_proc_exchange_id()
6934 * Wrapper for EXCHANGE_ID operation.
6936 static int _nfs4_proc_exchange_id(struct nfs_client
*clp
, struct rpc_cred
*cred
,
6939 nfs4_verifier verifier
;
6940 struct nfs41_exchange_id_args args
= {
6941 .verifier
= &verifier
,
6943 #ifdef CONFIG_NFS_V4_1_MIGRATION
6944 .flags
= EXCHGID4_FLAG_SUPP_MOVED_REFER
|
6945 EXCHGID4_FLAG_BIND_PRINC_STATEID
|
6946 EXCHGID4_FLAG_SUPP_MOVED_MIGR
,
6948 .flags
= EXCHGID4_FLAG_SUPP_MOVED_REFER
|
6949 EXCHGID4_FLAG_BIND_PRINC_STATEID
,
6952 struct nfs41_exchange_id_res res
= {
6956 struct rpc_message msg
= {
6957 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_EXCHANGE_ID
],
6963 nfs4_init_boot_verifier(clp
, &verifier
);
6965 status
= nfs4_init_uniform_client_string(clp
);
6969 dprintk("NFS call exchange_id auth=%s, '%s'\n",
6970 clp
->cl_rpcclient
->cl_auth
->au_ops
->au_name
,
6973 res
.server_owner
= kzalloc(sizeof(struct nfs41_server_owner
),
6975 if (unlikely(res
.server_owner
== NULL
)) {
6980 res
.server_scope
= kzalloc(sizeof(struct nfs41_server_scope
),
6982 if (unlikely(res
.server_scope
== NULL
)) {
6984 goto out_server_owner
;
6987 res
.impl_id
= kzalloc(sizeof(struct nfs41_impl_id
), GFP_NOFS
);
6988 if (unlikely(res
.impl_id
== NULL
)) {
6990 goto out_server_scope
;
6995 args
.state_protect
.how
= SP4_NONE
;
6999 args
.state_protect
= nfs4_sp4_mach_cred_request
;
7009 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
7010 trace_nfs4_exchange_id(clp
, status
);
7012 status
= nfs4_check_cl_exchange_flags(res
.flags
);
7015 status
= nfs4_sp4_select_mode(clp
, &res
.state_protect
);
7018 clp
->cl_clientid
= res
.clientid
;
7019 clp
->cl_exchange_flags
= res
.flags
;
7020 /* Client ID is not confirmed */
7021 if (!(res
.flags
& EXCHGID4_FLAG_CONFIRMED_R
)) {
7022 clear_bit(NFS4_SESSION_ESTABLISHED
,
7023 &clp
->cl_session
->session_state
);
7024 clp
->cl_seqid
= res
.seqid
;
7027 kfree(clp
->cl_serverowner
);
7028 clp
->cl_serverowner
= res
.server_owner
;
7029 res
.server_owner
= NULL
;
7031 /* use the most recent implementation id */
7032 kfree(clp
->cl_implid
);
7033 clp
->cl_implid
= res
.impl_id
;
7036 if (clp
->cl_serverscope
!= NULL
&&
7037 !nfs41_same_server_scope(clp
->cl_serverscope
,
7038 res
.server_scope
)) {
7039 dprintk("%s: server_scope mismatch detected\n",
7041 set_bit(NFS4CLNT_SERVER_SCOPE_MISMATCH
, &clp
->cl_state
);
7042 kfree(clp
->cl_serverscope
);
7043 clp
->cl_serverscope
= NULL
;
7046 if (clp
->cl_serverscope
== NULL
) {
7047 clp
->cl_serverscope
= res
.server_scope
;
7048 res
.server_scope
= NULL
;
7055 kfree(res
.server_scope
);
7057 kfree(res
.server_owner
);
7059 if (clp
->cl_implid
!= NULL
)
7060 dprintk("NFS reply exchange_id: Server Implementation ID: "
7061 "domain: %s, name: %s, date: %llu,%u\n",
7062 clp
->cl_implid
->domain
, clp
->cl_implid
->name
,
7063 clp
->cl_implid
->date
.seconds
,
7064 clp
->cl_implid
->date
.nseconds
);
7065 dprintk("NFS reply exchange_id: %d\n", status
);
7070 * nfs4_proc_exchange_id()
7072 * Returns zero, a negative errno, or a negative NFS4ERR status code.
7074 * Since the clientid has expired, all compounds using sessions
7075 * associated with the stale clientid will be returning
7076 * NFS4ERR_BADSESSION in the sequence operation, and will therefore
7077 * be in some phase of session reset.
7079 * Will attempt to negotiate SP4_MACH_CRED if krb5i / krb5p auth is used.
7081 int nfs4_proc_exchange_id(struct nfs_client
*clp
, struct rpc_cred
*cred
)
7083 rpc_authflavor_t authflavor
= clp
->cl_rpcclient
->cl_auth
->au_flavor
;
7086 /* try SP4_MACH_CRED if krb5i/p */
7087 if (authflavor
== RPC_AUTH_GSS_KRB5I
||
7088 authflavor
== RPC_AUTH_GSS_KRB5P
) {
7089 status
= _nfs4_proc_exchange_id(clp
, cred
, SP4_MACH_CRED
);
7095 return _nfs4_proc_exchange_id(clp
, cred
, SP4_NONE
);
7098 static int _nfs4_proc_destroy_clientid(struct nfs_client
*clp
,
7099 struct rpc_cred
*cred
)
7101 struct rpc_message msg
= {
7102 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DESTROY_CLIENTID
],
7108 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
7109 trace_nfs4_destroy_clientid(clp
, status
);
7111 dprintk("NFS: Got error %d from the server %s on "
7112 "DESTROY_CLIENTID.", status
, clp
->cl_hostname
);
7116 static int nfs4_proc_destroy_clientid(struct nfs_client
*clp
,
7117 struct rpc_cred
*cred
)
7122 for (loop
= NFS4_MAX_LOOP_ON_RECOVER
; loop
!= 0; loop
--) {
7123 ret
= _nfs4_proc_destroy_clientid(clp
, cred
);
7125 case -NFS4ERR_DELAY
:
7126 case -NFS4ERR_CLIENTID_BUSY
:
7136 int nfs4_destroy_clientid(struct nfs_client
*clp
)
7138 struct rpc_cred
*cred
;
7141 if (clp
->cl_mvops
->minor_version
< 1)
7143 if (clp
->cl_exchange_flags
== 0)
7145 if (clp
->cl_preserve_clid
)
7147 cred
= nfs4_get_clid_cred(clp
);
7148 ret
= nfs4_proc_destroy_clientid(clp
, cred
);
7153 case -NFS4ERR_STALE_CLIENTID
:
7154 clp
->cl_exchange_flags
= 0;
7160 struct nfs4_get_lease_time_data
{
7161 struct nfs4_get_lease_time_args
*args
;
7162 struct nfs4_get_lease_time_res
*res
;
7163 struct nfs_client
*clp
;
7166 static void nfs4_get_lease_time_prepare(struct rpc_task
*task
,
7169 struct nfs4_get_lease_time_data
*data
=
7170 (struct nfs4_get_lease_time_data
*)calldata
;
7172 dprintk("--> %s\n", __func__
);
7173 /* just setup sequence, do not trigger session recovery
7174 since we're invoked within one */
7175 nfs41_setup_sequence(data
->clp
->cl_session
,
7176 &data
->args
->la_seq_args
,
7177 &data
->res
->lr_seq_res
,
7179 dprintk("<-- %s\n", __func__
);
7183 * Called from nfs4_state_manager thread for session setup, so don't recover
7184 * from sequence operation or clientid errors.
7186 static void nfs4_get_lease_time_done(struct rpc_task
*task
, void *calldata
)
7188 struct nfs4_get_lease_time_data
*data
=
7189 (struct nfs4_get_lease_time_data
*)calldata
;
7191 dprintk("--> %s\n", __func__
);
7192 if (!nfs41_sequence_done(task
, &data
->res
->lr_seq_res
))
7194 switch (task
->tk_status
) {
7195 case -NFS4ERR_DELAY
:
7196 case -NFS4ERR_GRACE
:
7197 dprintk("%s Retry: tk_status %d\n", __func__
, task
->tk_status
);
7198 rpc_delay(task
, NFS4_POLL_RETRY_MIN
);
7199 task
->tk_status
= 0;
7201 case -NFS4ERR_RETRY_UNCACHED_REP
:
7202 rpc_restart_call_prepare(task
);
7205 dprintk("<-- %s\n", __func__
);
7208 static const struct rpc_call_ops nfs4_get_lease_time_ops
= {
7209 .rpc_call_prepare
= nfs4_get_lease_time_prepare
,
7210 .rpc_call_done
= nfs4_get_lease_time_done
,
7213 int nfs4_proc_get_lease_time(struct nfs_client
*clp
, struct nfs_fsinfo
*fsinfo
)
7215 struct rpc_task
*task
;
7216 struct nfs4_get_lease_time_args args
;
7217 struct nfs4_get_lease_time_res res
= {
7218 .lr_fsinfo
= fsinfo
,
7220 struct nfs4_get_lease_time_data data
= {
7225 struct rpc_message msg
= {
7226 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GET_LEASE_TIME
],
7230 struct rpc_task_setup task_setup
= {
7231 .rpc_client
= clp
->cl_rpcclient
,
7232 .rpc_message
= &msg
,
7233 .callback_ops
= &nfs4_get_lease_time_ops
,
7234 .callback_data
= &data
,
7235 .flags
= RPC_TASK_TIMEOUT
,
7239 nfs4_init_sequence(&args
.la_seq_args
, &res
.lr_seq_res
, 0);
7240 nfs4_set_sequence_privileged(&args
.la_seq_args
);
7241 dprintk("--> %s\n", __func__
);
7242 task
= rpc_run_task(&task_setup
);
7245 status
= PTR_ERR(task
);
7247 status
= task
->tk_status
;
7250 dprintk("<-- %s return %d\n", __func__
, status
);
7256 * Initialize the values to be used by the client in CREATE_SESSION
7257 * If nfs4_init_session set the fore channel request and response sizes,
7260 * Set the back channel max_resp_sz_cached to zero to force the client to
7261 * always set csa_cachethis to FALSE because the current implementation
7262 * of the back channel DRC only supports caching the CB_SEQUENCE operation.
7264 static void nfs4_init_channel_attrs(struct nfs41_create_session_args
*args
)
7266 unsigned int max_rqst_sz
, max_resp_sz
;
7268 max_rqst_sz
= NFS_MAX_FILE_IO_SIZE
+ nfs41_maxwrite_overhead
;
7269 max_resp_sz
= NFS_MAX_FILE_IO_SIZE
+ nfs41_maxread_overhead
;
7271 /* Fore channel attributes */
7272 args
->fc_attrs
.max_rqst_sz
= max_rqst_sz
;
7273 args
->fc_attrs
.max_resp_sz
= max_resp_sz
;
7274 args
->fc_attrs
.max_ops
= NFS4_MAX_OPS
;
7275 args
->fc_attrs
.max_reqs
= max_session_slots
;
7277 dprintk("%s: Fore Channel : max_rqst_sz=%u max_resp_sz=%u "
7278 "max_ops=%u max_reqs=%u\n",
7280 args
->fc_attrs
.max_rqst_sz
, args
->fc_attrs
.max_resp_sz
,
7281 args
->fc_attrs
.max_ops
, args
->fc_attrs
.max_reqs
);
7283 /* Back channel attributes */
7284 args
->bc_attrs
.max_rqst_sz
= PAGE_SIZE
;
7285 args
->bc_attrs
.max_resp_sz
= PAGE_SIZE
;
7286 args
->bc_attrs
.max_resp_sz_cached
= 0;
7287 args
->bc_attrs
.max_ops
= NFS4_MAX_BACK_CHANNEL_OPS
;
7288 args
->bc_attrs
.max_reqs
= 1;
7290 dprintk("%s: Back Channel : max_rqst_sz=%u max_resp_sz=%u "
7291 "max_resp_sz_cached=%u max_ops=%u max_reqs=%u\n",
7293 args
->bc_attrs
.max_rqst_sz
, args
->bc_attrs
.max_resp_sz
,
7294 args
->bc_attrs
.max_resp_sz_cached
, args
->bc_attrs
.max_ops
,
7295 args
->bc_attrs
.max_reqs
);
7298 static int nfs4_verify_fore_channel_attrs(struct nfs41_create_session_args
*args
,
7299 struct nfs41_create_session_res
*res
)
7301 struct nfs4_channel_attrs
*sent
= &args
->fc_attrs
;
7302 struct nfs4_channel_attrs
*rcvd
= &res
->fc_attrs
;
7304 if (rcvd
->max_resp_sz
> sent
->max_resp_sz
)
7307 * Our requested max_ops is the minimum we need; we're not
7308 * prepared to break up compounds into smaller pieces than that.
7309 * So, no point even trying to continue if the server won't
7312 if (rcvd
->max_ops
< sent
->max_ops
)
7314 if (rcvd
->max_reqs
== 0)
7316 if (rcvd
->max_reqs
> NFS4_MAX_SLOT_TABLE
)
7317 rcvd
->max_reqs
= NFS4_MAX_SLOT_TABLE
;
7321 static int nfs4_verify_back_channel_attrs(struct nfs41_create_session_args
*args
,
7322 struct nfs41_create_session_res
*res
)
7324 struct nfs4_channel_attrs
*sent
= &args
->bc_attrs
;
7325 struct nfs4_channel_attrs
*rcvd
= &res
->bc_attrs
;
7327 if (!(res
->flags
& SESSION4_BACK_CHAN
))
7329 if (rcvd
->max_rqst_sz
> sent
->max_rqst_sz
)
7331 if (rcvd
->max_resp_sz
< sent
->max_resp_sz
)
7333 if (rcvd
->max_resp_sz_cached
> sent
->max_resp_sz_cached
)
7335 /* These would render the backchannel useless: */
7336 if (rcvd
->max_ops
!= sent
->max_ops
)
7338 if (rcvd
->max_reqs
!= sent
->max_reqs
)
7344 static int nfs4_verify_channel_attrs(struct nfs41_create_session_args
*args
,
7345 struct nfs41_create_session_res
*res
)
7349 ret
= nfs4_verify_fore_channel_attrs(args
, res
);
7352 return nfs4_verify_back_channel_attrs(args
, res
);
7355 static void nfs4_update_session(struct nfs4_session
*session
,
7356 struct nfs41_create_session_res
*res
)
7358 nfs4_copy_sessionid(&session
->sess_id
, &res
->sessionid
);
7359 /* Mark client id and session as being confirmed */
7360 session
->clp
->cl_exchange_flags
|= EXCHGID4_FLAG_CONFIRMED_R
;
7361 set_bit(NFS4_SESSION_ESTABLISHED
, &session
->session_state
);
7362 session
->flags
= res
->flags
;
7363 memcpy(&session
->fc_attrs
, &res
->fc_attrs
, sizeof(session
->fc_attrs
));
7364 if (res
->flags
& SESSION4_BACK_CHAN
)
7365 memcpy(&session
->bc_attrs
, &res
->bc_attrs
,
7366 sizeof(session
->bc_attrs
));
7369 static int _nfs4_proc_create_session(struct nfs_client
*clp
,
7370 struct rpc_cred
*cred
)
7372 struct nfs4_session
*session
= clp
->cl_session
;
7373 struct nfs41_create_session_args args
= {
7375 .clientid
= clp
->cl_clientid
,
7376 .seqid
= clp
->cl_seqid
,
7377 .cb_program
= NFS4_CALLBACK
,
7379 struct nfs41_create_session_res res
;
7381 struct rpc_message msg
= {
7382 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CREATE_SESSION
],
7389 nfs4_init_channel_attrs(&args
);
7390 args
.flags
= (SESSION4_PERSIST
| SESSION4_BACK_CHAN
);
7392 status
= rpc_call_sync(session
->clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
7393 trace_nfs4_create_session(clp
, status
);
7396 /* Verify the session's negotiated channel_attrs values */
7397 status
= nfs4_verify_channel_attrs(&args
, &res
);
7398 /* Increment the clientid slot sequence id */
7399 if (clp
->cl_seqid
== res
.seqid
)
7403 nfs4_update_session(session
, &res
);
7410 * Issues a CREATE_SESSION operation to the server.
7411 * It is the responsibility of the caller to verify the session is
7412 * expired before calling this routine.
7414 int nfs4_proc_create_session(struct nfs_client
*clp
, struct rpc_cred
*cred
)
7418 struct nfs4_session
*session
= clp
->cl_session
;
7420 dprintk("--> %s clp=%p session=%p\n", __func__
, clp
, session
);
7422 status
= _nfs4_proc_create_session(clp
, cred
);
7426 /* Init or reset the session slot tables */
7427 status
= nfs4_setup_session_slot_tables(session
);
7428 dprintk("slot table setup returned %d\n", status
);
7432 ptr
= (unsigned *)&session
->sess_id
.data
[0];
7433 dprintk("%s client>seqid %d sessionid %u:%u:%u:%u\n", __func__
,
7434 clp
->cl_seqid
, ptr
[0], ptr
[1], ptr
[2], ptr
[3]);
7436 dprintk("<-- %s\n", __func__
);
7441 * Issue the over-the-wire RPC DESTROY_SESSION.
7442 * The caller must serialize access to this routine.
7444 int nfs4_proc_destroy_session(struct nfs4_session
*session
,
7445 struct rpc_cred
*cred
)
7447 struct rpc_message msg
= {
7448 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DESTROY_SESSION
],
7449 .rpc_argp
= session
,
7454 dprintk("--> nfs4_proc_destroy_session\n");
7456 /* session is still being setup */
7457 if (!test_and_clear_bit(NFS4_SESSION_ESTABLISHED
, &session
->session_state
))
7460 status
= rpc_call_sync(session
->clp
->cl_rpcclient
, &msg
, RPC_TASK_TIMEOUT
);
7461 trace_nfs4_destroy_session(session
->clp
, status
);
7464 dprintk("NFS: Got error %d from the server on DESTROY_SESSION. "
7465 "Session has been destroyed regardless...\n", status
);
7467 dprintk("<-- nfs4_proc_destroy_session\n");
7472 * Renew the cl_session lease.
7474 struct nfs4_sequence_data
{
7475 struct nfs_client
*clp
;
7476 struct nfs4_sequence_args args
;
7477 struct nfs4_sequence_res res
;
7480 static void nfs41_sequence_release(void *data
)
7482 struct nfs4_sequence_data
*calldata
= data
;
7483 struct nfs_client
*clp
= calldata
->clp
;
7485 if (atomic_read(&clp
->cl_count
) > 1)
7486 nfs4_schedule_state_renewal(clp
);
7487 nfs_put_client(clp
);
7491 static int nfs41_sequence_handle_errors(struct rpc_task
*task
, struct nfs_client
*clp
)
7493 switch(task
->tk_status
) {
7494 case -NFS4ERR_DELAY
:
7495 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
7498 nfs4_schedule_lease_recovery(clp
);
7503 static void nfs41_sequence_call_done(struct rpc_task
*task
, void *data
)
7505 struct nfs4_sequence_data
*calldata
= data
;
7506 struct nfs_client
*clp
= calldata
->clp
;
7508 if (!nfs41_sequence_done(task
, task
->tk_msg
.rpc_resp
))
7511 trace_nfs4_sequence(clp
, task
->tk_status
);
7512 if (task
->tk_status
< 0) {
7513 dprintk("%s ERROR %d\n", __func__
, task
->tk_status
);
7514 if (atomic_read(&clp
->cl_count
) == 1)
7517 if (nfs41_sequence_handle_errors(task
, clp
) == -EAGAIN
) {
7518 rpc_restart_call_prepare(task
);
7522 dprintk("%s rpc_cred %p\n", __func__
, task
->tk_msg
.rpc_cred
);
7524 dprintk("<-- %s\n", __func__
);
7527 static void nfs41_sequence_prepare(struct rpc_task
*task
, void *data
)
7529 struct nfs4_sequence_data
*calldata
= data
;
7530 struct nfs_client
*clp
= calldata
->clp
;
7531 struct nfs4_sequence_args
*args
;
7532 struct nfs4_sequence_res
*res
;
7534 args
= task
->tk_msg
.rpc_argp
;
7535 res
= task
->tk_msg
.rpc_resp
;
7537 nfs41_setup_sequence(clp
->cl_session
, args
, res
, task
);
7540 static const struct rpc_call_ops nfs41_sequence_ops
= {
7541 .rpc_call_done
= nfs41_sequence_call_done
,
7542 .rpc_call_prepare
= nfs41_sequence_prepare
,
7543 .rpc_release
= nfs41_sequence_release
,
7546 static struct rpc_task
*_nfs41_proc_sequence(struct nfs_client
*clp
,
7547 struct rpc_cred
*cred
,
7550 struct nfs4_sequence_data
*calldata
;
7551 struct rpc_message msg
= {
7552 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SEQUENCE
],
7555 struct rpc_task_setup task_setup_data
= {
7556 .rpc_client
= clp
->cl_rpcclient
,
7557 .rpc_message
= &msg
,
7558 .callback_ops
= &nfs41_sequence_ops
,
7559 .flags
= RPC_TASK_ASYNC
| RPC_TASK_TIMEOUT
,
7562 if (!atomic_inc_not_zero(&clp
->cl_count
))
7563 return ERR_PTR(-EIO
);
7564 calldata
= kzalloc(sizeof(*calldata
), GFP_NOFS
);
7565 if (calldata
== NULL
) {
7566 nfs_put_client(clp
);
7567 return ERR_PTR(-ENOMEM
);
7569 nfs4_init_sequence(&calldata
->args
, &calldata
->res
, 0);
7571 nfs4_set_sequence_privileged(&calldata
->args
);
7572 msg
.rpc_argp
= &calldata
->args
;
7573 msg
.rpc_resp
= &calldata
->res
;
7574 calldata
->clp
= clp
;
7575 task_setup_data
.callback_data
= calldata
;
7577 return rpc_run_task(&task_setup_data
);
7580 static int nfs41_proc_async_sequence(struct nfs_client
*clp
, struct rpc_cred
*cred
, unsigned renew_flags
)
7582 struct rpc_task
*task
;
7585 if ((renew_flags
& NFS4_RENEW_TIMEOUT
) == 0)
7587 task
= _nfs41_proc_sequence(clp
, cred
, false);
7589 ret
= PTR_ERR(task
);
7591 rpc_put_task_async(task
);
7592 dprintk("<-- %s status=%d\n", __func__
, ret
);
7596 static int nfs4_proc_sequence(struct nfs_client
*clp
, struct rpc_cred
*cred
)
7598 struct rpc_task
*task
;
7601 task
= _nfs41_proc_sequence(clp
, cred
, true);
7603 ret
= PTR_ERR(task
);
7606 ret
= rpc_wait_for_completion_task(task
);
7608 ret
= task
->tk_status
;
7611 dprintk("<-- %s status=%d\n", __func__
, ret
);
7615 struct nfs4_reclaim_complete_data
{
7616 struct nfs_client
*clp
;
7617 struct nfs41_reclaim_complete_args arg
;
7618 struct nfs41_reclaim_complete_res res
;
7621 static void nfs4_reclaim_complete_prepare(struct rpc_task
*task
, void *data
)
7623 struct nfs4_reclaim_complete_data
*calldata
= data
;
7625 nfs41_setup_sequence(calldata
->clp
->cl_session
,
7626 &calldata
->arg
.seq_args
,
7627 &calldata
->res
.seq_res
,
7631 static int nfs41_reclaim_complete_handle_errors(struct rpc_task
*task
, struct nfs_client
*clp
)
7633 switch(task
->tk_status
) {
7635 case -NFS4ERR_COMPLETE_ALREADY
:
7636 case -NFS4ERR_WRONG_CRED
: /* What to do here? */
7638 case -NFS4ERR_DELAY
:
7639 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
7641 case -NFS4ERR_RETRY_UNCACHED_REP
:
7644 nfs4_schedule_lease_recovery(clp
);
7649 static void nfs4_reclaim_complete_done(struct rpc_task
*task
, void *data
)
7651 struct nfs4_reclaim_complete_data
*calldata
= data
;
7652 struct nfs_client
*clp
= calldata
->clp
;
7653 struct nfs4_sequence_res
*res
= &calldata
->res
.seq_res
;
7655 dprintk("--> %s\n", __func__
);
7656 if (!nfs41_sequence_done(task
, res
))
7659 trace_nfs4_reclaim_complete(clp
, task
->tk_status
);
7660 if (nfs41_reclaim_complete_handle_errors(task
, clp
) == -EAGAIN
) {
7661 rpc_restart_call_prepare(task
);
7664 dprintk("<-- %s\n", __func__
);
7667 static void nfs4_free_reclaim_complete_data(void *data
)
7669 struct nfs4_reclaim_complete_data
*calldata
= data
;
7674 static const struct rpc_call_ops nfs4_reclaim_complete_call_ops
= {
7675 .rpc_call_prepare
= nfs4_reclaim_complete_prepare
,
7676 .rpc_call_done
= nfs4_reclaim_complete_done
,
7677 .rpc_release
= nfs4_free_reclaim_complete_data
,
7681 * Issue a global reclaim complete.
7683 static int nfs41_proc_reclaim_complete(struct nfs_client
*clp
,
7684 struct rpc_cred
*cred
)
7686 struct nfs4_reclaim_complete_data
*calldata
;
7687 struct rpc_task
*task
;
7688 struct rpc_message msg
= {
7689 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RECLAIM_COMPLETE
],
7692 struct rpc_task_setup task_setup_data
= {
7693 .rpc_client
= clp
->cl_rpcclient
,
7694 .rpc_message
= &msg
,
7695 .callback_ops
= &nfs4_reclaim_complete_call_ops
,
7696 .flags
= RPC_TASK_ASYNC
,
7698 int status
= -ENOMEM
;
7700 dprintk("--> %s\n", __func__
);
7701 calldata
= kzalloc(sizeof(*calldata
), GFP_NOFS
);
7702 if (calldata
== NULL
)
7704 calldata
->clp
= clp
;
7705 calldata
->arg
.one_fs
= 0;
7707 nfs4_init_sequence(&calldata
->arg
.seq_args
, &calldata
->res
.seq_res
, 0);
7708 nfs4_set_sequence_privileged(&calldata
->arg
.seq_args
);
7709 msg
.rpc_argp
= &calldata
->arg
;
7710 msg
.rpc_resp
= &calldata
->res
;
7711 task_setup_data
.callback_data
= calldata
;
7712 task
= rpc_run_task(&task_setup_data
);
7714 status
= PTR_ERR(task
);
7717 status
= nfs4_wait_for_completion_rpc_task(task
);
7719 status
= task
->tk_status
;
7723 dprintk("<-- %s status=%d\n", __func__
, status
);
7728 nfs4_layoutget_prepare(struct rpc_task
*task
, void *calldata
)
7730 struct nfs4_layoutget
*lgp
= calldata
;
7731 struct nfs_server
*server
= NFS_SERVER(lgp
->args
.inode
);
7732 struct nfs4_session
*session
= nfs4_get_session(server
);
7734 dprintk("--> %s\n", __func__
);
7735 /* Note the is a race here, where a CB_LAYOUTRECALL can come in
7736 * right now covering the LAYOUTGET we are about to send.
7737 * However, that is not so catastrophic, and there seems
7738 * to be no way to prevent it completely.
7740 if (nfs41_setup_sequence(session
, &lgp
->args
.seq_args
,
7741 &lgp
->res
.seq_res
, task
))
7743 if (pnfs_choose_layoutget_stateid(&lgp
->args
.stateid
,
7744 NFS_I(lgp
->args
.inode
)->layout
,
7746 lgp
->args
.ctx
->state
)) {
7747 rpc_exit(task
, NFS4_OK
);
7751 static void nfs4_layoutget_done(struct rpc_task
*task
, void *calldata
)
7753 struct nfs4_layoutget
*lgp
= calldata
;
7754 struct inode
*inode
= lgp
->args
.inode
;
7755 struct nfs_server
*server
= NFS_SERVER(inode
);
7756 struct pnfs_layout_hdr
*lo
;
7757 struct nfs4_state
*state
= NULL
;
7758 unsigned long timeo
, now
, giveup
;
7760 dprintk("--> %s tk_status => %d\n", __func__
, -task
->tk_status
);
7762 if (!nfs41_sequence_done(task
, &lgp
->res
.seq_res
))
7765 switch (task
->tk_status
) {
7769 * NFS4ERR_LAYOUTTRYLATER is a conflict with another client
7770 * (or clients) writing to the same RAID stripe
7772 case -NFS4ERR_LAYOUTTRYLATER
:
7774 * NFS4ERR_RECALLCONFLICT is when conflict with self (must recall
7775 * existing layout before getting a new one).
7777 case -NFS4ERR_RECALLCONFLICT
:
7778 timeo
= rpc_get_timeout(task
->tk_client
);
7779 giveup
= lgp
->args
.timestamp
+ timeo
;
7781 if (time_after(giveup
, now
)) {
7782 unsigned long delay
;
7785 * - Not less then NFS4_POLL_RETRY_MIN.
7786 * - One last time a jiffie before we give up
7787 * - exponential backoff (time_now minus start_attempt)
7789 delay
= max_t(unsigned long, NFS4_POLL_RETRY_MIN
,
7790 min((giveup
- now
- 1),
7791 now
- lgp
->args
.timestamp
));
7793 dprintk("%s: NFS4ERR_RECALLCONFLICT waiting %lu\n",
7795 rpc_delay(task
, delay
);
7796 task
->tk_status
= 0;
7797 rpc_restart_call_prepare(task
);
7798 goto out
; /* Do not call nfs4_async_handle_error() */
7801 case -NFS4ERR_EXPIRED
:
7802 case -NFS4ERR_BAD_STATEID
:
7803 spin_lock(&inode
->i_lock
);
7804 lo
= NFS_I(inode
)->layout
;
7805 if (!lo
|| list_empty(&lo
->plh_segs
)) {
7806 spin_unlock(&inode
->i_lock
);
7807 /* If the open stateid was bad, then recover it. */
7808 state
= lgp
->args
.ctx
->state
;
7813 * Mark the bad layout state as invalid, then retry
7814 * with the current stateid.
7816 pnfs_mark_matching_lsegs_invalid(lo
, &head
, NULL
);
7817 spin_unlock(&inode
->i_lock
);
7818 pnfs_free_lseg_list(&head
);
7820 task
->tk_status
= 0;
7821 rpc_restart_call_prepare(task
);
7824 if (nfs4_async_handle_error(task
, server
, state
, NULL
) == -EAGAIN
)
7825 rpc_restart_call_prepare(task
);
7827 dprintk("<-- %s\n", __func__
);
7830 static size_t max_response_pages(struct nfs_server
*server
)
7832 u32 max_resp_sz
= server
->nfs_client
->cl_session
->fc_attrs
.max_resp_sz
;
7833 return nfs_page_array_len(0, max_resp_sz
);
7836 static void nfs4_free_pages(struct page
**pages
, size_t size
)
7843 for (i
= 0; i
< size
; i
++) {
7846 __free_page(pages
[i
]);
7851 static struct page
**nfs4_alloc_pages(size_t size
, gfp_t gfp_flags
)
7853 struct page
**pages
;
7856 pages
= kcalloc(size
, sizeof(struct page
*), gfp_flags
);
7858 dprintk("%s: can't alloc array of %zu pages\n", __func__
, size
);
7862 for (i
= 0; i
< size
; i
++) {
7863 pages
[i
] = alloc_page(gfp_flags
);
7865 dprintk("%s: failed to allocate page\n", __func__
);
7866 nfs4_free_pages(pages
, size
);
7874 static void nfs4_layoutget_release(void *calldata
)
7876 struct nfs4_layoutget
*lgp
= calldata
;
7877 struct inode
*inode
= lgp
->args
.inode
;
7878 struct nfs_server
*server
= NFS_SERVER(inode
);
7879 size_t max_pages
= max_response_pages(server
);
7881 dprintk("--> %s\n", __func__
);
7882 nfs4_free_pages(lgp
->args
.layout
.pages
, max_pages
);
7883 pnfs_put_layout_hdr(NFS_I(inode
)->layout
);
7884 put_nfs_open_context(lgp
->args
.ctx
);
7886 dprintk("<-- %s\n", __func__
);
7889 static const struct rpc_call_ops nfs4_layoutget_call_ops
= {
7890 .rpc_call_prepare
= nfs4_layoutget_prepare
,
7891 .rpc_call_done
= nfs4_layoutget_done
,
7892 .rpc_release
= nfs4_layoutget_release
,
7895 struct pnfs_layout_segment
*
7896 nfs4_proc_layoutget(struct nfs4_layoutget
*lgp
, gfp_t gfp_flags
)
7898 struct inode
*inode
= lgp
->args
.inode
;
7899 struct nfs_server
*server
= NFS_SERVER(inode
);
7900 size_t max_pages
= max_response_pages(server
);
7901 struct rpc_task
*task
;
7902 struct rpc_message msg
= {
7903 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LAYOUTGET
],
7904 .rpc_argp
= &lgp
->args
,
7905 .rpc_resp
= &lgp
->res
,
7906 .rpc_cred
= lgp
->cred
,
7908 struct rpc_task_setup task_setup_data
= {
7909 .rpc_client
= server
->client
,
7910 .rpc_message
= &msg
,
7911 .callback_ops
= &nfs4_layoutget_call_ops
,
7912 .callback_data
= lgp
,
7913 .flags
= RPC_TASK_ASYNC
,
7915 struct pnfs_layout_segment
*lseg
= NULL
;
7918 dprintk("--> %s\n", __func__
);
7920 /* nfs4_layoutget_release calls pnfs_put_layout_hdr */
7921 pnfs_get_layout_hdr(NFS_I(inode
)->layout
);
7923 lgp
->args
.layout
.pages
= nfs4_alloc_pages(max_pages
, gfp_flags
);
7924 if (!lgp
->args
.layout
.pages
) {
7925 nfs4_layoutget_release(lgp
);
7926 return ERR_PTR(-ENOMEM
);
7928 lgp
->args
.layout
.pglen
= max_pages
* PAGE_SIZE
;
7929 lgp
->args
.timestamp
= jiffies
;
7931 lgp
->res
.layoutp
= &lgp
->args
.layout
;
7932 lgp
->res
.seq_res
.sr_slot
= NULL
;
7933 nfs4_init_sequence(&lgp
->args
.seq_args
, &lgp
->res
.seq_res
, 0);
7935 task
= rpc_run_task(&task_setup_data
);
7937 return ERR_CAST(task
);
7938 status
= nfs4_wait_for_completion_rpc_task(task
);
7940 status
= task
->tk_status
;
7941 trace_nfs4_layoutget(lgp
->args
.ctx
,
7945 /* if layoutp->len is 0, nfs4_layoutget_prepare called rpc_exit */
7946 if (status
== 0 && lgp
->res
.layoutp
->len
)
7947 lseg
= pnfs_layout_process(lgp
);
7949 dprintk("<-- %s status=%d\n", __func__
, status
);
7951 return ERR_PTR(status
);
7956 nfs4_layoutreturn_prepare(struct rpc_task
*task
, void *calldata
)
7958 struct nfs4_layoutreturn
*lrp
= calldata
;
7960 dprintk("--> %s\n", __func__
);
7961 nfs41_setup_sequence(lrp
->clp
->cl_session
,
7962 &lrp
->args
.seq_args
,
7967 static void nfs4_layoutreturn_done(struct rpc_task
*task
, void *calldata
)
7969 struct nfs4_layoutreturn
*lrp
= calldata
;
7970 struct nfs_server
*server
;
7972 dprintk("--> %s\n", __func__
);
7974 if (!nfs41_sequence_done(task
, &lrp
->res
.seq_res
))
7977 server
= NFS_SERVER(lrp
->args
.inode
);
7978 switch (task
->tk_status
) {
7980 task
->tk_status
= 0;
7983 case -NFS4ERR_DELAY
:
7984 if (nfs4_async_handle_error(task
, server
, NULL
, NULL
) != -EAGAIN
)
7986 rpc_restart_call_prepare(task
);
7989 dprintk("<-- %s\n", __func__
);
7992 static void nfs4_layoutreturn_release(void *calldata
)
7994 struct nfs4_layoutreturn
*lrp
= calldata
;
7995 struct pnfs_layout_hdr
*lo
= lrp
->args
.layout
;
7998 dprintk("--> %s\n", __func__
);
7999 spin_lock(&lo
->plh_inode
->i_lock
);
8000 if (lrp
->res
.lrs_present
)
8001 pnfs_set_layout_stateid(lo
, &lrp
->res
.stateid
, true);
8002 pnfs_mark_matching_lsegs_invalid(lo
, &freeme
, &lrp
->args
.range
);
8003 pnfs_clear_layoutreturn_waitbit(lo
);
8004 lo
->plh_block_lgets
--;
8005 spin_unlock(&lo
->plh_inode
->i_lock
);
8006 pnfs_free_lseg_list(&freeme
);
8007 pnfs_put_layout_hdr(lrp
->args
.layout
);
8008 nfs_iput_and_deactive(lrp
->inode
);
8010 dprintk("<-- %s\n", __func__
);
8013 static const struct rpc_call_ops nfs4_layoutreturn_call_ops
= {
8014 .rpc_call_prepare
= nfs4_layoutreturn_prepare
,
8015 .rpc_call_done
= nfs4_layoutreturn_done
,
8016 .rpc_release
= nfs4_layoutreturn_release
,
8019 int nfs4_proc_layoutreturn(struct nfs4_layoutreturn
*lrp
, bool sync
)
8021 struct rpc_task
*task
;
8022 struct rpc_message msg
= {
8023 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LAYOUTRETURN
],
8024 .rpc_argp
= &lrp
->args
,
8025 .rpc_resp
= &lrp
->res
,
8026 .rpc_cred
= lrp
->cred
,
8028 struct rpc_task_setup task_setup_data
= {
8029 .rpc_client
= NFS_SERVER(lrp
->args
.inode
)->client
,
8030 .rpc_message
= &msg
,
8031 .callback_ops
= &nfs4_layoutreturn_call_ops
,
8032 .callback_data
= lrp
,
8036 dprintk("--> %s\n", __func__
);
8038 lrp
->inode
= nfs_igrab_and_active(lrp
->args
.inode
);
8040 nfs4_layoutreturn_release(lrp
);
8043 task_setup_data
.flags
|= RPC_TASK_ASYNC
;
8045 nfs4_init_sequence(&lrp
->args
.seq_args
, &lrp
->res
.seq_res
, 1);
8046 task
= rpc_run_task(&task_setup_data
);
8048 return PTR_ERR(task
);
8050 status
= task
->tk_status
;
8051 trace_nfs4_layoutreturn(lrp
->args
.inode
, status
);
8052 dprintk("<-- %s status=%d\n", __func__
, status
);
8058 _nfs4_proc_getdeviceinfo(struct nfs_server
*server
,
8059 struct pnfs_device
*pdev
,
8060 struct rpc_cred
*cred
)
8062 struct nfs4_getdeviceinfo_args args
= {
8064 .notify_types
= NOTIFY_DEVICEID4_CHANGE
|
8065 NOTIFY_DEVICEID4_DELETE
,
8067 struct nfs4_getdeviceinfo_res res
= {
8070 struct rpc_message msg
= {
8071 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETDEVICEINFO
],
8078 dprintk("--> %s\n", __func__
);
8079 status
= nfs4_call_sync(server
->client
, server
, &msg
, &args
.seq_args
, &res
.seq_res
, 0);
8080 if (res
.notification
& ~args
.notify_types
)
8081 dprintk("%s: unsupported notification\n", __func__
);
8082 if (res
.notification
!= args
.notify_types
)
8085 dprintk("<-- %s status=%d\n", __func__
, status
);
8090 int nfs4_proc_getdeviceinfo(struct nfs_server
*server
,
8091 struct pnfs_device
*pdev
,
8092 struct rpc_cred
*cred
)
8094 struct nfs4_exception exception
= { };
8098 err
= nfs4_handle_exception(server
,
8099 _nfs4_proc_getdeviceinfo(server
, pdev
, cred
),
8101 } while (exception
.retry
);
8104 EXPORT_SYMBOL_GPL(nfs4_proc_getdeviceinfo
);
8106 static void nfs4_layoutcommit_prepare(struct rpc_task
*task
, void *calldata
)
8108 struct nfs4_layoutcommit_data
*data
= calldata
;
8109 struct nfs_server
*server
= NFS_SERVER(data
->args
.inode
);
8110 struct nfs4_session
*session
= nfs4_get_session(server
);
8112 nfs41_setup_sequence(session
,
8113 &data
->args
.seq_args
,
8119 nfs4_layoutcommit_done(struct rpc_task
*task
, void *calldata
)
8121 struct nfs4_layoutcommit_data
*data
= calldata
;
8122 struct nfs_server
*server
= NFS_SERVER(data
->args
.inode
);
8124 if (!nfs41_sequence_done(task
, &data
->res
.seq_res
))
8127 switch (task
->tk_status
) { /* Just ignore these failures */
8128 case -NFS4ERR_DELEG_REVOKED
: /* layout was recalled */
8129 case -NFS4ERR_BADIOMODE
: /* no IOMODE_RW layout for range */
8130 case -NFS4ERR_BADLAYOUT
: /* no layout */
8131 case -NFS4ERR_GRACE
: /* loca_recalim always false */
8132 task
->tk_status
= 0;
8136 if (nfs4_async_handle_error(task
, server
, NULL
, NULL
) == -EAGAIN
) {
8137 rpc_restart_call_prepare(task
);
8143 static void nfs4_layoutcommit_release(void *calldata
)
8145 struct nfs4_layoutcommit_data
*data
= calldata
;
8147 pnfs_cleanup_layoutcommit(data
);
8148 nfs_post_op_update_inode_force_wcc(data
->args
.inode
,
8150 put_rpccred(data
->cred
);
8151 nfs_iput_and_deactive(data
->inode
);
8155 static const struct rpc_call_ops nfs4_layoutcommit_ops
= {
8156 .rpc_call_prepare
= nfs4_layoutcommit_prepare
,
8157 .rpc_call_done
= nfs4_layoutcommit_done
,
8158 .rpc_release
= nfs4_layoutcommit_release
,
8162 nfs4_proc_layoutcommit(struct nfs4_layoutcommit_data
*data
, bool sync
)
8164 struct rpc_message msg
= {
8165 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LAYOUTCOMMIT
],
8166 .rpc_argp
= &data
->args
,
8167 .rpc_resp
= &data
->res
,
8168 .rpc_cred
= data
->cred
,
8170 struct rpc_task_setup task_setup_data
= {
8171 .task
= &data
->task
,
8172 .rpc_client
= NFS_CLIENT(data
->args
.inode
),
8173 .rpc_message
= &msg
,
8174 .callback_ops
= &nfs4_layoutcommit_ops
,
8175 .callback_data
= data
,
8177 struct rpc_task
*task
;
8180 dprintk("NFS: initiating layoutcommit call. sync %d "
8181 "lbw: %llu inode %lu\n", sync
,
8182 data
->args
.lastbytewritten
,
8183 data
->args
.inode
->i_ino
);
8186 data
->inode
= nfs_igrab_and_active(data
->args
.inode
);
8187 if (data
->inode
== NULL
) {
8188 nfs4_layoutcommit_release(data
);
8191 task_setup_data
.flags
= RPC_TASK_ASYNC
;
8193 nfs4_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 1);
8194 task
= rpc_run_task(&task_setup_data
);
8196 return PTR_ERR(task
);
8198 status
= task
->tk_status
;
8199 trace_nfs4_layoutcommit(data
->args
.inode
, status
);
8200 dprintk("%s: status %d\n", __func__
, status
);
8206 * Use the state managment nfs_client cl_rpcclient, which uses krb5i (if
8207 * possible) as per RFC3530bis and RFC5661 Security Considerations sections
8210 _nfs41_proc_secinfo_no_name(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
8211 struct nfs_fsinfo
*info
,
8212 struct nfs4_secinfo_flavors
*flavors
, bool use_integrity
)
8214 struct nfs41_secinfo_no_name_args args
= {
8215 .style
= SECINFO_STYLE_CURRENT_FH
,
8217 struct nfs4_secinfo_res res
= {
8220 struct rpc_message msg
= {
8221 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SECINFO_NO_NAME
],
8225 struct rpc_clnt
*clnt
= server
->client
;
8226 struct rpc_cred
*cred
= NULL
;
8229 if (use_integrity
) {
8230 clnt
= server
->nfs_client
->cl_rpcclient
;
8231 cred
= nfs4_get_clid_cred(server
->nfs_client
);
8232 msg
.rpc_cred
= cred
;
8235 dprintk("--> %s\n", __func__
);
8236 status
= nfs4_call_sync(clnt
, server
, &msg
, &args
.seq_args
,
8238 dprintk("<-- %s status=%d\n", __func__
, status
);
8247 nfs41_proc_secinfo_no_name(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
8248 struct nfs_fsinfo
*info
, struct nfs4_secinfo_flavors
*flavors
)
8250 struct nfs4_exception exception
= { };
8253 /* first try using integrity protection */
8254 err
= -NFS4ERR_WRONGSEC
;
8256 /* try to use integrity protection with machine cred */
8257 if (_nfs4_is_integrity_protected(server
->nfs_client
))
8258 err
= _nfs41_proc_secinfo_no_name(server
, fhandle
, info
,
8262 * if unable to use integrity protection, or SECINFO with
8263 * integrity protection returns NFS4ERR_WRONGSEC (which is
8264 * disallowed by spec, but exists in deployed servers) use
8265 * the current filesystem's rpc_client and the user cred.
8267 if (err
== -NFS4ERR_WRONGSEC
)
8268 err
= _nfs41_proc_secinfo_no_name(server
, fhandle
, info
,
8273 case -NFS4ERR_WRONGSEC
:
8277 err
= nfs4_handle_exception(server
, err
, &exception
);
8279 } while (exception
.retry
);
8285 nfs41_find_root_sec(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
8286 struct nfs_fsinfo
*info
)
8290 rpc_authflavor_t flavor
= RPC_AUTH_MAXFLAVOR
;
8291 struct nfs4_secinfo_flavors
*flavors
;
8292 struct nfs4_secinfo4
*secinfo
;
8295 page
= alloc_page(GFP_KERNEL
);
8301 flavors
= page_address(page
);
8302 err
= nfs41_proc_secinfo_no_name(server
, fhandle
, info
, flavors
);
8305 * Fall back on "guess and check" method if
8306 * the server doesn't support SECINFO_NO_NAME
8308 if (err
== -NFS4ERR_WRONGSEC
|| err
== -ENOTSUPP
) {
8309 err
= nfs4_find_root_sec(server
, fhandle
, info
);
8315 for (i
= 0; i
< flavors
->num_flavors
; i
++) {
8316 secinfo
= &flavors
->flavors
[i
];
8318 switch (secinfo
->flavor
) {
8322 flavor
= rpcauth_get_pseudoflavor(secinfo
->flavor
,
8323 &secinfo
->flavor_info
);
8326 flavor
= RPC_AUTH_MAXFLAVOR
;
8330 if (!nfs_auth_info_match(&server
->auth_info
, flavor
))
8331 flavor
= RPC_AUTH_MAXFLAVOR
;
8333 if (flavor
!= RPC_AUTH_MAXFLAVOR
) {
8334 err
= nfs4_lookup_root_sec(server
, fhandle
,
8341 if (flavor
== RPC_AUTH_MAXFLAVOR
)
8352 static int _nfs41_test_stateid(struct nfs_server
*server
,
8353 nfs4_stateid
*stateid
,
8354 struct rpc_cred
*cred
)
8357 struct nfs41_test_stateid_args args
= {
8360 struct nfs41_test_stateid_res res
;
8361 struct rpc_message msg
= {
8362 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_TEST_STATEID
],
8367 struct rpc_clnt
*rpc_client
= server
->client
;
8369 nfs4_state_protect(server
->nfs_client
, NFS_SP4_MACH_CRED_STATEID
,
8372 dprintk("NFS call test_stateid %p\n", stateid
);
8373 nfs4_init_sequence(&args
.seq_args
, &res
.seq_res
, 0);
8374 nfs4_set_sequence_privileged(&args
.seq_args
);
8375 status
= nfs4_call_sync_sequence(rpc_client
, server
, &msg
,
8376 &args
.seq_args
, &res
.seq_res
);
8377 if (status
!= NFS_OK
) {
8378 dprintk("NFS reply test_stateid: failed, %d\n", status
);
8381 dprintk("NFS reply test_stateid: succeeded, %d\n", -res
.status
);
8386 * nfs41_test_stateid - perform a TEST_STATEID operation
8388 * @server: server / transport on which to perform the operation
8389 * @stateid: state ID to test
8392 * Returns NFS_OK if the server recognizes that "stateid" is valid.
8393 * Otherwise a negative NFS4ERR value is returned if the operation
8394 * failed or the state ID is not currently valid.
8396 static int nfs41_test_stateid(struct nfs_server
*server
,
8397 nfs4_stateid
*stateid
,
8398 struct rpc_cred
*cred
)
8400 struct nfs4_exception exception
= { };
8403 err
= _nfs41_test_stateid(server
, stateid
, cred
);
8404 if (err
!= -NFS4ERR_DELAY
)
8406 nfs4_handle_exception(server
, err
, &exception
);
8407 } while (exception
.retry
);
8411 struct nfs_free_stateid_data
{
8412 struct nfs_server
*server
;
8413 struct nfs41_free_stateid_args args
;
8414 struct nfs41_free_stateid_res res
;
8417 static void nfs41_free_stateid_prepare(struct rpc_task
*task
, void *calldata
)
8419 struct nfs_free_stateid_data
*data
= calldata
;
8420 nfs41_setup_sequence(nfs4_get_session(data
->server
),
8421 &data
->args
.seq_args
,
8426 static void nfs41_free_stateid_done(struct rpc_task
*task
, void *calldata
)
8428 struct nfs_free_stateid_data
*data
= calldata
;
8430 nfs41_sequence_done(task
, &data
->res
.seq_res
);
8432 switch (task
->tk_status
) {
8433 case -NFS4ERR_DELAY
:
8434 if (nfs4_async_handle_error(task
, data
->server
, NULL
, NULL
) == -EAGAIN
)
8435 rpc_restart_call_prepare(task
);
8439 static void nfs41_free_stateid_release(void *calldata
)
8444 static const struct rpc_call_ops nfs41_free_stateid_ops
= {
8445 .rpc_call_prepare
= nfs41_free_stateid_prepare
,
8446 .rpc_call_done
= nfs41_free_stateid_done
,
8447 .rpc_release
= nfs41_free_stateid_release
,
8450 static struct rpc_task
*_nfs41_free_stateid(struct nfs_server
*server
,
8451 nfs4_stateid
*stateid
,
8452 struct rpc_cred
*cred
,
8455 struct rpc_message msg
= {
8456 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FREE_STATEID
],
8459 struct rpc_task_setup task_setup
= {
8460 .rpc_client
= server
->client
,
8461 .rpc_message
= &msg
,
8462 .callback_ops
= &nfs41_free_stateid_ops
,
8463 .flags
= RPC_TASK_ASYNC
,
8465 struct nfs_free_stateid_data
*data
;
8467 nfs4_state_protect(server
->nfs_client
, NFS_SP4_MACH_CRED_STATEID
,
8468 &task_setup
.rpc_client
, &msg
);
8470 dprintk("NFS call free_stateid %p\n", stateid
);
8471 data
= kmalloc(sizeof(*data
), GFP_NOFS
);
8473 return ERR_PTR(-ENOMEM
);
8474 data
->server
= server
;
8475 nfs4_stateid_copy(&data
->args
.stateid
, stateid
);
8477 task_setup
.callback_data
= data
;
8479 msg
.rpc_argp
= &data
->args
;
8480 msg
.rpc_resp
= &data
->res
;
8481 nfs4_init_sequence(&data
->args
.seq_args
, &data
->res
.seq_res
, 0);
8483 nfs4_set_sequence_privileged(&data
->args
.seq_args
);
8485 return rpc_run_task(&task_setup
);
8489 * nfs41_free_stateid - perform a FREE_STATEID operation
8491 * @server: server / transport on which to perform the operation
8492 * @stateid: state ID to release
8495 * Returns NFS_OK if the server freed "stateid". Otherwise a
8496 * negative NFS4ERR value is returned.
8498 static int nfs41_free_stateid(struct nfs_server
*server
,
8499 nfs4_stateid
*stateid
,
8500 struct rpc_cred
*cred
)
8502 struct rpc_task
*task
;
8505 task
= _nfs41_free_stateid(server
, stateid
, cred
, true);
8507 return PTR_ERR(task
);
8508 ret
= rpc_wait_for_completion_task(task
);
8510 ret
= task
->tk_status
;
8516 nfs41_free_lock_state(struct nfs_server
*server
, struct nfs4_lock_state
*lsp
)
8518 struct rpc_task
*task
;
8519 struct rpc_cred
*cred
= lsp
->ls_state
->owner
->so_cred
;
8521 task
= _nfs41_free_stateid(server
, &lsp
->ls_stateid
, cred
, false);
8522 nfs4_free_lock_state(server
, lsp
);
8528 static bool nfs41_match_stateid(const nfs4_stateid
*s1
,
8529 const nfs4_stateid
*s2
)
8531 if (memcmp(s1
->other
, s2
->other
, sizeof(s1
->other
)) != 0)
8534 if (s1
->seqid
== s2
->seqid
)
8536 if (s1
->seqid
== 0 || s2
->seqid
== 0)
8542 #endif /* CONFIG_NFS_V4_1 */
8544 static bool nfs4_match_stateid(const nfs4_stateid
*s1
,
8545 const nfs4_stateid
*s2
)
8547 return nfs4_stateid_match(s1
, s2
);
8551 static const struct nfs4_state_recovery_ops nfs40_reboot_recovery_ops
= {
8552 .owner_flag_bit
= NFS_OWNER_RECLAIM_REBOOT
,
8553 .state_flag_bit
= NFS_STATE_RECLAIM_REBOOT
,
8554 .recover_open
= nfs4_open_reclaim
,
8555 .recover_lock
= nfs4_lock_reclaim
,
8556 .establish_clid
= nfs4_init_clientid
,
8557 .detect_trunking
= nfs40_discover_server_trunking
,
8560 #if defined(CONFIG_NFS_V4_1)
8561 static const struct nfs4_state_recovery_ops nfs41_reboot_recovery_ops
= {
8562 .owner_flag_bit
= NFS_OWNER_RECLAIM_REBOOT
,
8563 .state_flag_bit
= NFS_STATE_RECLAIM_REBOOT
,
8564 .recover_open
= nfs4_open_reclaim
,
8565 .recover_lock
= nfs4_lock_reclaim
,
8566 .establish_clid
= nfs41_init_clientid
,
8567 .reclaim_complete
= nfs41_proc_reclaim_complete
,
8568 .detect_trunking
= nfs41_discover_server_trunking
,
8570 #endif /* CONFIG_NFS_V4_1 */
8572 static const struct nfs4_state_recovery_ops nfs40_nograce_recovery_ops
= {
8573 .owner_flag_bit
= NFS_OWNER_RECLAIM_NOGRACE
,
8574 .state_flag_bit
= NFS_STATE_RECLAIM_NOGRACE
,
8575 .recover_open
= nfs40_open_expired
,
8576 .recover_lock
= nfs4_lock_expired
,
8577 .establish_clid
= nfs4_init_clientid
,
8580 #if defined(CONFIG_NFS_V4_1)
8581 static const struct nfs4_state_recovery_ops nfs41_nograce_recovery_ops
= {
8582 .owner_flag_bit
= NFS_OWNER_RECLAIM_NOGRACE
,
8583 .state_flag_bit
= NFS_STATE_RECLAIM_NOGRACE
,
8584 .recover_open
= nfs41_open_expired
,
8585 .recover_lock
= nfs41_lock_expired
,
8586 .establish_clid
= nfs41_init_clientid
,
8588 #endif /* CONFIG_NFS_V4_1 */
8590 static const struct nfs4_state_maintenance_ops nfs40_state_renewal_ops
= {
8591 .sched_state_renewal
= nfs4_proc_async_renew
,
8592 .get_state_renewal_cred_locked
= nfs4_get_renew_cred_locked
,
8593 .renew_lease
= nfs4_proc_renew
,
8596 #if defined(CONFIG_NFS_V4_1)
8597 static const struct nfs4_state_maintenance_ops nfs41_state_renewal_ops
= {
8598 .sched_state_renewal
= nfs41_proc_async_sequence
,
8599 .get_state_renewal_cred_locked
= nfs4_get_machine_cred_locked
,
8600 .renew_lease
= nfs4_proc_sequence
,
8604 static const struct nfs4_mig_recovery_ops nfs40_mig_recovery_ops
= {
8605 .get_locations
= _nfs40_proc_get_locations
,
8606 .fsid_present
= _nfs40_proc_fsid_present
,
8609 #if defined(CONFIG_NFS_V4_1)
8610 static const struct nfs4_mig_recovery_ops nfs41_mig_recovery_ops
= {
8611 .get_locations
= _nfs41_proc_get_locations
,
8612 .fsid_present
= _nfs41_proc_fsid_present
,
8614 #endif /* CONFIG_NFS_V4_1 */
8616 static const struct nfs4_minor_version_ops nfs_v4_0_minor_ops
= {
8618 .init_caps
= NFS_CAP_READDIRPLUS
8619 | NFS_CAP_ATOMIC_OPEN
8620 | NFS_CAP_POSIX_LOCK
,
8621 .init_client
= nfs40_init_client
,
8622 .shutdown_client
= nfs40_shutdown_client
,
8623 .match_stateid
= nfs4_match_stateid
,
8624 .find_root_sec
= nfs4_find_root_sec
,
8625 .free_lock_state
= nfs4_release_lockowner
,
8626 .alloc_seqid
= nfs_alloc_seqid
,
8627 .call_sync_ops
= &nfs40_call_sync_ops
,
8628 .reboot_recovery_ops
= &nfs40_reboot_recovery_ops
,
8629 .nograce_recovery_ops
= &nfs40_nograce_recovery_ops
,
8630 .state_renewal_ops
= &nfs40_state_renewal_ops
,
8631 .mig_recovery_ops
= &nfs40_mig_recovery_ops
,
8634 #if defined(CONFIG_NFS_V4_1)
8635 static struct nfs_seqid
*
8636 nfs_alloc_no_seqid(struct nfs_seqid_counter
*arg1
, gfp_t arg2
)
8641 static const struct nfs4_minor_version_ops nfs_v4_1_minor_ops
= {
8643 .init_caps
= NFS_CAP_READDIRPLUS
8644 | NFS_CAP_ATOMIC_OPEN
8645 | NFS_CAP_POSIX_LOCK
8646 | NFS_CAP_STATEID_NFSV41
8647 | NFS_CAP_ATOMIC_OPEN_V1
,
8648 .init_client
= nfs41_init_client
,
8649 .shutdown_client
= nfs41_shutdown_client
,
8650 .match_stateid
= nfs41_match_stateid
,
8651 .find_root_sec
= nfs41_find_root_sec
,
8652 .free_lock_state
= nfs41_free_lock_state
,
8653 .alloc_seqid
= nfs_alloc_no_seqid
,
8654 .call_sync_ops
= &nfs41_call_sync_ops
,
8655 .reboot_recovery_ops
= &nfs41_reboot_recovery_ops
,
8656 .nograce_recovery_ops
= &nfs41_nograce_recovery_ops
,
8657 .state_renewal_ops
= &nfs41_state_renewal_ops
,
8658 .mig_recovery_ops
= &nfs41_mig_recovery_ops
,
8662 #if defined(CONFIG_NFS_V4_2)
8663 static const struct nfs4_minor_version_ops nfs_v4_2_minor_ops
= {
8665 .init_caps
= NFS_CAP_READDIRPLUS
8666 | NFS_CAP_ATOMIC_OPEN
8667 | NFS_CAP_POSIX_LOCK
8668 | NFS_CAP_STATEID_NFSV41
8669 | NFS_CAP_ATOMIC_OPEN_V1
8671 | NFS_CAP_DEALLOCATE
8673 | NFS_CAP_LAYOUTSTATS
,
8674 .init_client
= nfs41_init_client
,
8675 .shutdown_client
= nfs41_shutdown_client
,
8676 .match_stateid
= nfs41_match_stateid
,
8677 .find_root_sec
= nfs41_find_root_sec
,
8678 .free_lock_state
= nfs41_free_lock_state
,
8679 .call_sync_ops
= &nfs41_call_sync_ops
,
8680 .alloc_seqid
= nfs_alloc_no_seqid
,
8681 .reboot_recovery_ops
= &nfs41_reboot_recovery_ops
,
8682 .nograce_recovery_ops
= &nfs41_nograce_recovery_ops
,
8683 .state_renewal_ops
= &nfs41_state_renewal_ops
,
8684 .mig_recovery_ops
= &nfs41_mig_recovery_ops
,
8688 const struct nfs4_minor_version_ops
*nfs_v4_minor_ops
[] = {
8689 [0] = &nfs_v4_0_minor_ops
,
8690 #if defined(CONFIG_NFS_V4_1)
8691 [1] = &nfs_v4_1_minor_ops
,
8693 #if defined(CONFIG_NFS_V4_2)
8694 [2] = &nfs_v4_2_minor_ops
,
8698 static const struct inode_operations nfs4_dir_inode_operations
= {
8699 .create
= nfs_create
,
8700 .lookup
= nfs_lookup
,
8701 .atomic_open
= nfs_atomic_open
,
8703 .unlink
= nfs_unlink
,
8704 .symlink
= nfs_symlink
,
8708 .rename
= nfs_rename
,
8709 .permission
= nfs_permission
,
8710 .getattr
= nfs_getattr
,
8711 .setattr
= nfs_setattr
,
8712 .getxattr
= generic_getxattr
,
8713 .setxattr
= generic_setxattr
,
8714 .listxattr
= generic_listxattr
,
8715 .removexattr
= generic_removexattr
,
8718 static const struct inode_operations nfs4_file_inode_operations
= {
8719 .permission
= nfs_permission
,
8720 .getattr
= nfs_getattr
,
8721 .setattr
= nfs_setattr
,
8722 .getxattr
= generic_getxattr
,
8723 .setxattr
= generic_setxattr
,
8724 .listxattr
= generic_listxattr
,
8725 .removexattr
= generic_removexattr
,
8728 const struct nfs_rpc_ops nfs_v4_clientops
= {
8729 .version
= 4, /* protocol version */
8730 .dentry_ops
= &nfs4_dentry_operations
,
8731 .dir_inode_ops
= &nfs4_dir_inode_operations
,
8732 .file_inode_ops
= &nfs4_file_inode_operations
,
8733 .file_ops
= &nfs4_file_operations
,
8734 .getroot
= nfs4_proc_get_root
,
8735 .submount
= nfs4_submount
,
8736 .try_mount
= nfs4_try_mount
,
8737 .getattr
= nfs4_proc_getattr
,
8738 .setattr
= nfs4_proc_setattr
,
8739 .lookup
= nfs4_proc_lookup
,
8740 .access
= nfs4_proc_access
,
8741 .readlink
= nfs4_proc_readlink
,
8742 .create
= nfs4_proc_create
,
8743 .remove
= nfs4_proc_remove
,
8744 .unlink_setup
= nfs4_proc_unlink_setup
,
8745 .unlink_rpc_prepare
= nfs4_proc_unlink_rpc_prepare
,
8746 .unlink_done
= nfs4_proc_unlink_done
,
8747 .rename_setup
= nfs4_proc_rename_setup
,
8748 .rename_rpc_prepare
= nfs4_proc_rename_rpc_prepare
,
8749 .rename_done
= nfs4_proc_rename_done
,
8750 .link
= nfs4_proc_link
,
8751 .symlink
= nfs4_proc_symlink
,
8752 .mkdir
= nfs4_proc_mkdir
,
8753 .rmdir
= nfs4_proc_remove
,
8754 .readdir
= nfs4_proc_readdir
,
8755 .mknod
= nfs4_proc_mknod
,
8756 .statfs
= nfs4_proc_statfs
,
8757 .fsinfo
= nfs4_proc_fsinfo
,
8758 .pathconf
= nfs4_proc_pathconf
,
8759 .set_capabilities
= nfs4_server_capabilities
,
8760 .decode_dirent
= nfs4_decode_dirent
,
8761 .pgio_rpc_prepare
= nfs4_proc_pgio_rpc_prepare
,
8762 .read_setup
= nfs4_proc_read_setup
,
8763 .read_done
= nfs4_read_done
,
8764 .write_setup
= nfs4_proc_write_setup
,
8765 .write_done
= nfs4_write_done
,
8766 .commit_setup
= nfs4_proc_commit_setup
,
8767 .commit_rpc_prepare
= nfs4_proc_commit_rpc_prepare
,
8768 .commit_done
= nfs4_commit_done
,
8769 .lock
= nfs4_proc_lock
,
8770 .clear_acl_cache
= nfs4_zap_acl_attr
,
8771 .close_context
= nfs4_close_context
,
8772 .open_context
= nfs4_atomic_open
,
8773 .have_delegation
= nfs4_have_delegation
,
8774 .return_delegation
= nfs4_inode_return_delegation
,
8775 .alloc_client
= nfs4_alloc_client
,
8776 .init_client
= nfs4_init_client
,
8777 .free_client
= nfs4_free_client
,
8778 .create_server
= nfs4_create_server
,
8779 .clone_server
= nfs_clone_server
,
8782 static const struct xattr_handler nfs4_xattr_nfs4_acl_handler
= {
8783 .prefix
= XATTR_NAME_NFSV4_ACL
,
8784 .list
= nfs4_xattr_list_nfs4_acl
,
8785 .get
= nfs4_xattr_get_nfs4_acl
,
8786 .set
= nfs4_xattr_set_nfs4_acl
,
8789 const struct xattr_handler
*nfs4_xattr_handlers
[] = {
8790 &nfs4_xattr_nfs4_acl_handler
,
8791 #ifdef CONFIG_NFS_V4_SECURITY_LABEL
8792 &nfs4_xattr_nfs4_label_handler
,