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/utsname.h>
40 #include <linux/delay.h>
41 #include <linux/errno.h>
42 #include <linux/string.h>
43 #include <linux/sunrpc/clnt.h>
44 #include <linux/nfs.h>
45 #include <linux/nfs4.h>
46 #include <linux/nfs_fs.h>
47 #include <linux/nfs_page.h>
48 #include <linux/smp_lock.h>
49 #include <linux/namei.h>
50 #include <linux/mount.h>
51 #include <linux/module.h>
52 #include <linux/sunrpc/bc_xprt.h>
55 #include "delegation.h"
60 #define NFSDBG_FACILITY NFSDBG_PROC
62 #define NFS4_POLL_RETRY_MIN (HZ/10)
63 #define NFS4_POLL_RETRY_MAX (15*HZ)
66 static int _nfs4_proc_open(struct nfs4_opendata
*data
);
67 static int nfs4_do_fsinfo(struct nfs_server
*, struct nfs_fh
*, struct nfs_fsinfo
*);
68 static int nfs4_async_handle_error(struct rpc_task
*, const struct nfs_server
*, struct nfs4_state
*);
69 static int _nfs4_proc_lookup(struct inode
*dir
, const struct qstr
*name
, struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
);
70 static int _nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
);
72 /* Prevent leaks of NFSv4 errors into userland */
73 static int nfs4_map_errors(int err
)
76 dprintk("%s could not handle NFSv4 error %d\n",
84 * This is our standard bitmap for GETATTR requests.
86 const u32 nfs4_fattr_bitmap
[2] = {
91 | FATTR4_WORD0_FILEID
,
93 | FATTR4_WORD1_NUMLINKS
95 | FATTR4_WORD1_OWNER_GROUP
97 | FATTR4_WORD1_SPACE_USED
98 | FATTR4_WORD1_TIME_ACCESS
99 | FATTR4_WORD1_TIME_METADATA
100 | FATTR4_WORD1_TIME_MODIFY
103 const u32 nfs4_statfs_bitmap
[2] = {
104 FATTR4_WORD0_FILES_AVAIL
105 | FATTR4_WORD0_FILES_FREE
106 | FATTR4_WORD0_FILES_TOTAL
,
107 FATTR4_WORD1_SPACE_AVAIL
108 | FATTR4_WORD1_SPACE_FREE
109 | FATTR4_WORD1_SPACE_TOTAL
112 const u32 nfs4_pathconf_bitmap
[2] = {
114 | FATTR4_WORD0_MAXNAME
,
118 const u32 nfs4_fsinfo_bitmap
[2] = { FATTR4_WORD0_MAXFILESIZE
119 | FATTR4_WORD0_MAXREAD
120 | FATTR4_WORD0_MAXWRITE
121 | FATTR4_WORD0_LEASE_TIME
,
125 const u32 nfs4_fs_locations_bitmap
[2] = {
127 | FATTR4_WORD0_CHANGE
130 | FATTR4_WORD0_FILEID
131 | FATTR4_WORD0_FS_LOCATIONS
,
133 | FATTR4_WORD1_NUMLINKS
135 | FATTR4_WORD1_OWNER_GROUP
136 | FATTR4_WORD1_RAWDEV
137 | FATTR4_WORD1_SPACE_USED
138 | FATTR4_WORD1_TIME_ACCESS
139 | FATTR4_WORD1_TIME_METADATA
140 | FATTR4_WORD1_TIME_MODIFY
141 | FATTR4_WORD1_MOUNTED_ON_FILEID
144 static void nfs4_setup_readdir(u64 cookie
, __be32
*verifier
, struct dentry
*dentry
,
145 struct nfs4_readdir_arg
*readdir
)
149 BUG_ON(readdir
->count
< 80);
151 readdir
->cookie
= cookie
;
152 memcpy(&readdir
->verifier
, verifier
, sizeof(readdir
->verifier
));
157 memset(&readdir
->verifier
, 0, sizeof(readdir
->verifier
));
162 * NFSv4 servers do not return entries for '.' and '..'
163 * Therefore, we fake these entries here. We let '.'
164 * have cookie 0 and '..' have cookie 1. Note that
165 * when talking to the server, we always send cookie 0
168 start
= p
= kmap_atomic(*readdir
->pages
, KM_USER0
);
171 *p
++ = xdr_one
; /* next */
172 *p
++ = xdr_zero
; /* cookie, first word */
173 *p
++ = xdr_one
; /* cookie, second word */
174 *p
++ = xdr_one
; /* entry len */
175 memcpy(p
, ".\0\0\0", 4); /* entry */
177 *p
++ = xdr_one
; /* bitmap length */
178 *p
++ = htonl(FATTR4_WORD0_FILEID
); /* bitmap */
179 *p
++ = htonl(8); /* attribute buffer length */
180 p
= xdr_encode_hyper(p
, NFS_FILEID(dentry
->d_inode
));
183 *p
++ = xdr_one
; /* next */
184 *p
++ = xdr_zero
; /* cookie, first word */
185 *p
++ = xdr_two
; /* cookie, second word */
186 *p
++ = xdr_two
; /* entry len */
187 memcpy(p
, "..\0\0", 4); /* entry */
189 *p
++ = xdr_one
; /* bitmap length */
190 *p
++ = htonl(FATTR4_WORD0_FILEID
); /* bitmap */
191 *p
++ = htonl(8); /* attribute buffer length */
192 p
= xdr_encode_hyper(p
, NFS_FILEID(dentry
->d_parent
->d_inode
));
194 readdir
->pgbase
= (char *)p
- (char *)start
;
195 readdir
->count
-= readdir
->pgbase
;
196 kunmap_atomic(start
, KM_USER0
);
199 static int nfs4_wait_clnt_recover(struct nfs_client
*clp
)
205 res
= wait_on_bit(&clp
->cl_state
, NFS4CLNT_MANAGER_RUNNING
,
206 nfs_wait_bit_killable
, TASK_KILLABLE
);
210 static int nfs4_delay(struct rpc_clnt
*clnt
, long *timeout
)
217 *timeout
= NFS4_POLL_RETRY_MIN
;
218 if (*timeout
> NFS4_POLL_RETRY_MAX
)
219 *timeout
= NFS4_POLL_RETRY_MAX
;
220 schedule_timeout_killable(*timeout
);
221 if (fatal_signal_pending(current
))
227 /* This is the error handling routine for processes that are allowed
230 static int nfs4_handle_exception(const struct nfs_server
*server
, int errorcode
, struct nfs4_exception
*exception
)
232 struct nfs_client
*clp
= server
->nfs_client
;
233 struct nfs4_state
*state
= exception
->state
;
236 exception
->retry
= 0;
240 case -NFS4ERR_ADMIN_REVOKED
:
241 case -NFS4ERR_BAD_STATEID
:
242 case -NFS4ERR_OPENMODE
:
245 nfs4_state_mark_reclaim_nograce(clp
, state
);
246 case -NFS4ERR_STALE_CLIENTID
:
247 case -NFS4ERR_STALE_STATEID
:
248 case -NFS4ERR_EXPIRED
:
249 nfs4_schedule_state_recovery(clp
);
250 ret
= nfs4_wait_clnt_recover(clp
);
252 exception
->retry
= 1;
253 #if !defined(CONFIG_NFS_V4_1)
255 #else /* !defined(CONFIG_NFS_V4_1) */
256 if (!nfs4_has_session(server
->nfs_client
))
259 case -NFS4ERR_BADSESSION
:
260 case -NFS4ERR_BADSLOT
:
261 case -NFS4ERR_BAD_HIGH_SLOT
:
262 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
263 case -NFS4ERR_DEADSESSION
:
264 case -NFS4ERR_SEQ_FALSE_RETRY
:
265 case -NFS4ERR_SEQ_MISORDERED
:
266 dprintk("%s ERROR: %d Reset session\n", __func__
,
268 set_bit(NFS4CLNT_SESSION_SETUP
, &clp
->cl_state
);
269 exception
->retry
= 1;
271 #endif /* !defined(CONFIG_NFS_V4_1) */
272 case -NFS4ERR_FILE_OPEN
:
275 ret
= nfs4_delay(server
->client
, &exception
->timeout
);
278 case -NFS4ERR_OLD_STATEID
:
279 exception
->retry
= 1;
281 /* We failed to handle the error */
282 return nfs4_map_errors(ret
);
286 static void renew_lease(const struct nfs_server
*server
, unsigned long timestamp
)
288 struct nfs_client
*clp
= server
->nfs_client
;
289 spin_lock(&clp
->cl_lock
);
290 if (time_before(clp
->cl_last_renewal
,timestamp
))
291 clp
->cl_last_renewal
= timestamp
;
292 spin_unlock(&clp
->cl_lock
);
295 #if defined(CONFIG_NFS_V4_1)
298 * nfs4_free_slot - free a slot and efficiently update slot table.
300 * freeing a slot is trivially done by clearing its respective bit
302 * If the freed slotid equals highest_used_slotid we want to update it
303 * so that the server would be able to size down the slot table if needed,
304 * otherwise we know that the highest_used_slotid is still in use.
305 * When updating highest_used_slotid there may be "holes" in the bitmap
306 * so we need to scan down from highest_used_slotid to 0 looking for the now
307 * highest slotid in use.
308 * If none found, highest_used_slotid is set to -1.
311 nfs4_free_slot(struct nfs4_slot_table
*tbl
, u8 free_slotid
)
313 int slotid
= free_slotid
;
315 spin_lock(&tbl
->slot_tbl_lock
);
316 /* clear used bit in bitmap */
317 __clear_bit(slotid
, tbl
->used_slots
);
319 /* update highest_used_slotid when it is freed */
320 if (slotid
== tbl
->highest_used_slotid
) {
321 slotid
= find_last_bit(tbl
->used_slots
, tbl
->max_slots
);
322 if (slotid
>= 0 && slotid
< tbl
->max_slots
)
323 tbl
->highest_used_slotid
= slotid
;
325 tbl
->highest_used_slotid
= -1;
327 rpc_wake_up_next(&tbl
->slot_tbl_waitq
);
328 spin_unlock(&tbl
->slot_tbl_lock
);
329 dprintk("%s: free_slotid %u highest_used_slotid %d\n", __func__
,
330 free_slotid
, tbl
->highest_used_slotid
);
333 void nfs41_sequence_free_slot(const struct nfs_client
*clp
,
334 struct nfs4_sequence_res
*res
)
336 struct nfs4_slot_table
*tbl
;
338 if (!nfs4_has_session(clp
)) {
339 dprintk("%s: No session\n", __func__
);
342 tbl
= &clp
->cl_session
->fc_slot_table
;
343 if (res
->sr_slotid
== NFS4_MAX_SLOT_TABLE
) {
344 dprintk("%s: No slot\n", __func__
);
345 /* just wake up the next guy waiting since
346 * we may have not consumed a slot after all */
347 rpc_wake_up_next(&tbl
->slot_tbl_waitq
);
350 nfs4_free_slot(tbl
, res
->sr_slotid
);
351 res
->sr_slotid
= NFS4_MAX_SLOT_TABLE
;
354 static void nfs41_sequence_done(struct nfs_client
*clp
,
355 struct nfs4_sequence_res
*res
,
358 unsigned long timestamp
;
359 struct nfs4_slot_table
*tbl
;
360 struct nfs4_slot
*slot
;
363 * sr_status remains 1 if an RPC level error occurred. The server
364 * may or may not have processed the sequence operation..
365 * Proceed as if the server received and processed the sequence
368 if (res
->sr_status
== 1)
369 res
->sr_status
= NFS_OK
;
371 /* -ERESTARTSYS can result in skipping nfs41_sequence_setup */
372 if (res
->sr_slotid
== NFS4_MAX_SLOT_TABLE
)
375 tbl
= &clp
->cl_session
->fc_slot_table
;
376 slot
= tbl
->slots
+ res
->sr_slotid
;
378 if (res
->sr_status
== 0) {
379 /* Update the slot's sequence and clientid lease timer */
381 timestamp
= res
->sr_renewal_time
;
382 spin_lock(&clp
->cl_lock
);
383 if (time_before(clp
->cl_last_renewal
, timestamp
))
384 clp
->cl_last_renewal
= timestamp
;
385 spin_unlock(&clp
->cl_lock
);
389 /* The session may be reset by one of the error handlers. */
390 dprintk("%s: Error %d free the slot \n", __func__
, res
->sr_status
);
391 nfs41_sequence_free_slot(clp
, res
);
395 * nfs4_find_slot - efficiently look for a free slot
397 * nfs4_find_slot looks for an unset bit in the used_slots bitmap.
398 * If found, we mark the slot as used, update the highest_used_slotid,
399 * and respectively set up the sequence operation args.
400 * The slot number is returned if found, or NFS4_MAX_SLOT_TABLE otherwise.
402 * Note: must be called with under the slot_tbl_lock.
405 nfs4_find_slot(struct nfs4_slot_table
*tbl
, struct rpc_task
*task
)
408 u8 ret_id
= NFS4_MAX_SLOT_TABLE
;
409 BUILD_BUG_ON((u8
)NFS4_MAX_SLOT_TABLE
!= (int)NFS4_MAX_SLOT_TABLE
);
411 dprintk("--> %s used_slots=%04lx highest_used=%d max_slots=%d\n",
412 __func__
, tbl
->used_slots
[0], tbl
->highest_used_slotid
,
414 slotid
= find_first_zero_bit(tbl
->used_slots
, tbl
->max_slots
);
415 if (slotid
>= tbl
->max_slots
)
417 __set_bit(slotid
, tbl
->used_slots
);
418 if (slotid
> tbl
->highest_used_slotid
)
419 tbl
->highest_used_slotid
= slotid
;
422 dprintk("<-- %s used_slots=%04lx highest_used=%d slotid=%d \n",
423 __func__
, tbl
->used_slots
[0], tbl
->highest_used_slotid
, ret_id
);
427 static int nfs4_recover_session(struct nfs4_session
*session
)
429 struct nfs_client
*clp
= session
->clp
;
433 ret
= nfs4_wait_clnt_recover(clp
);
436 if (!test_bit(NFS4CLNT_SESSION_SETUP
, &clp
->cl_state
))
438 nfs4_schedule_state_manager(clp
);
443 static int nfs41_setup_sequence(struct nfs4_session
*session
,
444 struct nfs4_sequence_args
*args
,
445 struct nfs4_sequence_res
*res
,
447 struct rpc_task
*task
)
449 struct nfs4_slot
*slot
;
450 struct nfs4_slot_table
*tbl
;
454 dprintk("--> %s\n", __func__
);
455 /* slot already allocated? */
456 if (res
->sr_slotid
!= NFS4_MAX_SLOT_TABLE
)
459 memset(res
, 0, sizeof(*res
));
460 res
->sr_slotid
= NFS4_MAX_SLOT_TABLE
;
461 tbl
= &session
->fc_slot_table
;
463 spin_lock(&tbl
->slot_tbl_lock
);
464 if (test_bit(NFS4CLNT_SESSION_SETUP
, &session
->clp
->cl_state
)) {
465 if (tbl
->highest_used_slotid
!= -1) {
466 rpc_sleep_on(&tbl
->slot_tbl_waitq
, task
, NULL
);
467 spin_unlock(&tbl
->slot_tbl_lock
);
468 dprintk("<-- %s: Session reset: draining\n", __func__
);
472 /* The slot table is empty; start the reset thread */
473 dprintk("%s Session Reset\n", __func__
);
474 spin_unlock(&tbl
->slot_tbl_lock
);
475 status
= nfs4_recover_session(session
);
478 spin_lock(&tbl
->slot_tbl_lock
);
481 slotid
= nfs4_find_slot(tbl
, task
);
482 if (slotid
== NFS4_MAX_SLOT_TABLE
) {
483 rpc_sleep_on(&tbl
->slot_tbl_waitq
, task
, NULL
);
484 spin_unlock(&tbl
->slot_tbl_lock
);
485 dprintk("<-- %s: no free slots\n", __func__
);
488 spin_unlock(&tbl
->slot_tbl_lock
);
490 slot
= tbl
->slots
+ slotid
;
491 args
->sa_session
= session
;
492 args
->sa_slotid
= slotid
;
493 args
->sa_cache_this
= cache_reply
;
495 dprintk("<-- %s slotid=%d seqid=%d\n", __func__
, slotid
, slot
->seq_nr
);
497 res
->sr_session
= session
;
498 res
->sr_slotid
= slotid
;
499 res
->sr_renewal_time
= jiffies
;
501 * sr_status is only set in decode_sequence, and so will remain
502 * set to 1 if an rpc level failure occurs.
508 int nfs4_setup_sequence(struct nfs_client
*clp
,
509 struct nfs4_sequence_args
*args
,
510 struct nfs4_sequence_res
*res
,
512 struct rpc_task
*task
)
516 dprintk("--> %s clp %p session %p sr_slotid %d\n",
517 __func__
, clp
, clp
->cl_session
, res
->sr_slotid
);
519 if (!nfs4_has_session(clp
))
521 ret
= nfs41_setup_sequence(clp
->cl_session
, args
, res
, cache_reply
,
523 if (ret
!= -EAGAIN
) {
524 /* terminate rpc task */
525 task
->tk_status
= ret
;
526 task
->tk_action
= NULL
;
529 dprintk("<-- %s status=%d\n", __func__
, ret
);
533 struct nfs41_call_sync_data
{
534 struct nfs_client
*clp
;
535 struct nfs4_sequence_args
*seq_args
;
536 struct nfs4_sequence_res
*seq_res
;
540 static void nfs41_call_sync_prepare(struct rpc_task
*task
, void *calldata
)
542 struct nfs41_call_sync_data
*data
= calldata
;
544 dprintk("--> %s data->clp->cl_session %p\n", __func__
,
545 data
->clp
->cl_session
);
546 if (nfs4_setup_sequence(data
->clp
, data
->seq_args
,
547 data
->seq_res
, data
->cache_reply
, task
))
549 rpc_call_start(task
);
552 static void nfs41_call_sync_done(struct rpc_task
*task
, void *calldata
)
554 struct nfs41_call_sync_data
*data
= calldata
;
556 nfs41_sequence_done(data
->clp
, data
->seq_res
, task
->tk_status
);
557 nfs41_sequence_free_slot(data
->clp
, data
->seq_res
);
560 struct rpc_call_ops nfs41_call_sync_ops
= {
561 .rpc_call_prepare
= nfs41_call_sync_prepare
,
562 .rpc_call_done
= nfs41_call_sync_done
,
565 static int nfs4_call_sync_sequence(struct nfs_client
*clp
,
566 struct rpc_clnt
*clnt
,
567 struct rpc_message
*msg
,
568 struct nfs4_sequence_args
*args
,
569 struct nfs4_sequence_res
*res
,
573 struct rpc_task
*task
;
574 struct nfs41_call_sync_data data
= {
578 .cache_reply
= cache_reply
,
580 struct rpc_task_setup task_setup
= {
583 .callback_ops
= &nfs41_call_sync_ops
,
584 .callback_data
= &data
587 res
->sr_slotid
= NFS4_MAX_SLOT_TABLE
;
588 task
= rpc_run_task(&task_setup
);
592 ret
= task
->tk_status
;
598 int _nfs4_call_sync_session(struct nfs_server
*server
,
599 struct rpc_message
*msg
,
600 struct nfs4_sequence_args
*args
,
601 struct nfs4_sequence_res
*res
,
604 return nfs4_call_sync_sequence(server
->nfs_client
, server
->client
,
605 msg
, args
, res
, cache_reply
);
608 #endif /* CONFIG_NFS_V4_1 */
610 int _nfs4_call_sync(struct nfs_server
*server
,
611 struct rpc_message
*msg
,
612 struct nfs4_sequence_args
*args
,
613 struct nfs4_sequence_res
*res
,
616 args
->sa_session
= res
->sr_session
= NULL
;
617 return rpc_call_sync(server
->client
, msg
, 0);
620 #define nfs4_call_sync(server, msg, args, res, cache_reply) \
621 (server)->nfs_client->cl_call_sync((server), (msg), &(args)->seq_args, \
622 &(res)->seq_res, (cache_reply))
624 static void nfs4_sequence_done(const struct nfs_server
*server
,
625 struct nfs4_sequence_res
*res
, int rpc_status
)
627 #ifdef CONFIG_NFS_V4_1
628 if (nfs4_has_session(server
->nfs_client
))
629 nfs41_sequence_done(server
->nfs_client
, res
, rpc_status
);
630 #endif /* CONFIG_NFS_V4_1 */
633 /* no restart, therefore free slot here */
634 static void nfs4_sequence_done_free_slot(const struct nfs_server
*server
,
635 struct nfs4_sequence_res
*res
,
638 nfs4_sequence_done(server
, res
, rpc_status
);
639 nfs4_sequence_free_slot(server
->nfs_client
, res
);
642 static void update_changeattr(struct inode
*dir
, struct nfs4_change_info
*cinfo
)
644 struct nfs_inode
*nfsi
= NFS_I(dir
);
646 spin_lock(&dir
->i_lock
);
647 nfsi
->cache_validity
|= NFS_INO_INVALID_ATTR
|NFS_INO_REVAL_PAGECACHE
|NFS_INO_INVALID_DATA
;
648 if (!cinfo
->atomic
|| cinfo
->before
!= nfsi
->change_attr
)
649 nfs_force_lookup_revalidate(dir
);
650 nfsi
->change_attr
= cinfo
->after
;
651 spin_unlock(&dir
->i_lock
);
654 struct nfs4_opendata
{
656 struct nfs_openargs o_arg
;
657 struct nfs_openres o_res
;
658 struct nfs_open_confirmargs c_arg
;
659 struct nfs_open_confirmres c_res
;
660 struct nfs_fattr f_attr
;
661 struct nfs_fattr dir_attr
;
664 struct nfs4_state_owner
*owner
;
665 struct nfs4_state
*state
;
667 unsigned long timestamp
;
668 unsigned int rpc_done
: 1;
674 static void nfs4_init_opendata_res(struct nfs4_opendata
*p
)
676 p
->o_res
.f_attr
= &p
->f_attr
;
677 p
->o_res
.dir_attr
= &p
->dir_attr
;
678 p
->o_res
.seqid
= p
->o_arg
.seqid
;
679 p
->c_res
.seqid
= p
->c_arg
.seqid
;
680 p
->o_res
.server
= p
->o_arg
.server
;
681 nfs_fattr_init(&p
->f_attr
);
682 nfs_fattr_init(&p
->dir_attr
);
683 p
->o_res
.seq_res
.sr_slotid
= NFS4_MAX_SLOT_TABLE
;
686 static struct nfs4_opendata
*nfs4_opendata_alloc(struct path
*path
,
687 struct nfs4_state_owner
*sp
, fmode_t fmode
, int flags
,
688 const struct iattr
*attrs
)
690 struct dentry
*parent
= dget_parent(path
->dentry
);
691 struct inode
*dir
= parent
->d_inode
;
692 struct nfs_server
*server
= NFS_SERVER(dir
);
693 struct nfs4_opendata
*p
;
695 p
= kzalloc(sizeof(*p
), GFP_KERNEL
);
698 p
->o_arg
.seqid
= nfs_alloc_seqid(&sp
->so_seqid
);
699 if (p
->o_arg
.seqid
== NULL
)
701 p
->path
.mnt
= mntget(path
->mnt
);
702 p
->path
.dentry
= dget(path
->dentry
);
705 atomic_inc(&sp
->so_count
);
706 p
->o_arg
.fh
= NFS_FH(dir
);
707 p
->o_arg
.open_flags
= flags
;
708 p
->o_arg
.fmode
= fmode
& (FMODE_READ
|FMODE_WRITE
);
709 p
->o_arg
.clientid
= server
->nfs_client
->cl_clientid
;
710 p
->o_arg
.id
= sp
->so_owner_id
.id
;
711 p
->o_arg
.name
= &p
->path
.dentry
->d_name
;
712 p
->o_arg
.server
= server
;
713 p
->o_arg
.bitmask
= server
->attr_bitmask
;
714 p
->o_arg
.claim
= NFS4_OPEN_CLAIM_NULL
;
715 if (flags
& O_EXCL
) {
716 u32
*s
= (u32
*) p
->o_arg
.u
.verifier
.data
;
719 } else if (flags
& O_CREAT
) {
720 p
->o_arg
.u
.attrs
= &p
->attrs
;
721 memcpy(&p
->attrs
, attrs
, sizeof(p
->attrs
));
723 p
->c_arg
.fh
= &p
->o_res
.fh
;
724 p
->c_arg
.stateid
= &p
->o_res
.stateid
;
725 p
->c_arg
.seqid
= p
->o_arg
.seqid
;
726 nfs4_init_opendata_res(p
);
736 static void nfs4_opendata_free(struct kref
*kref
)
738 struct nfs4_opendata
*p
= container_of(kref
,
739 struct nfs4_opendata
, kref
);
741 nfs_free_seqid(p
->o_arg
.seqid
);
742 if (p
->state
!= NULL
)
743 nfs4_put_open_state(p
->state
);
744 nfs4_put_state_owner(p
->owner
);
750 static void nfs4_opendata_put(struct nfs4_opendata
*p
)
753 kref_put(&p
->kref
, nfs4_opendata_free
);
756 static int nfs4_wait_for_completion_rpc_task(struct rpc_task
*task
)
760 ret
= rpc_wait_for_completion_task(task
);
764 static int can_open_cached(struct nfs4_state
*state
, fmode_t mode
, int open_mode
)
768 if (open_mode
& O_EXCL
)
770 switch (mode
& (FMODE_READ
|FMODE_WRITE
)) {
772 ret
|= test_bit(NFS_O_RDONLY_STATE
, &state
->flags
) != 0;
775 ret
|= test_bit(NFS_O_WRONLY_STATE
, &state
->flags
) != 0;
777 case FMODE_READ
|FMODE_WRITE
:
778 ret
|= test_bit(NFS_O_RDWR_STATE
, &state
->flags
) != 0;
784 static int can_open_delegated(struct nfs_delegation
*delegation
, fmode_t fmode
)
786 if ((delegation
->type
& fmode
) != fmode
)
788 if (test_bit(NFS_DELEGATION_NEED_RECLAIM
, &delegation
->flags
))
790 nfs_mark_delegation_referenced(delegation
);
794 static void update_open_stateflags(struct nfs4_state
*state
, fmode_t fmode
)
803 case FMODE_READ
|FMODE_WRITE
:
806 nfs4_state_set_mode_locked(state
, state
->state
| fmode
);
809 static void nfs_set_open_stateid_locked(struct nfs4_state
*state
, nfs4_stateid
*stateid
, fmode_t fmode
)
811 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0)
812 memcpy(state
->stateid
.data
, stateid
->data
, sizeof(state
->stateid
.data
));
813 memcpy(state
->open_stateid
.data
, stateid
->data
, sizeof(state
->open_stateid
.data
));
816 set_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
819 set_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
821 case FMODE_READ
|FMODE_WRITE
:
822 set_bit(NFS_O_RDWR_STATE
, &state
->flags
);
826 static void nfs_set_open_stateid(struct nfs4_state
*state
, nfs4_stateid
*stateid
, fmode_t fmode
)
828 write_seqlock(&state
->seqlock
);
829 nfs_set_open_stateid_locked(state
, stateid
, fmode
);
830 write_sequnlock(&state
->seqlock
);
833 static void __update_open_stateid(struct nfs4_state
*state
, nfs4_stateid
*open_stateid
, const nfs4_stateid
*deleg_stateid
, fmode_t fmode
)
836 * Protect the call to nfs4_state_set_mode_locked and
837 * serialise the stateid update
839 write_seqlock(&state
->seqlock
);
840 if (deleg_stateid
!= NULL
) {
841 memcpy(state
->stateid
.data
, deleg_stateid
->data
, sizeof(state
->stateid
.data
));
842 set_bit(NFS_DELEGATED_STATE
, &state
->flags
);
844 if (open_stateid
!= NULL
)
845 nfs_set_open_stateid_locked(state
, open_stateid
, fmode
);
846 write_sequnlock(&state
->seqlock
);
847 spin_lock(&state
->owner
->so_lock
);
848 update_open_stateflags(state
, fmode
);
849 spin_unlock(&state
->owner
->so_lock
);
852 static int update_open_stateid(struct nfs4_state
*state
, nfs4_stateid
*open_stateid
, nfs4_stateid
*delegation
, fmode_t fmode
)
854 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
855 struct nfs_delegation
*deleg_cur
;
858 fmode
&= (FMODE_READ
|FMODE_WRITE
);
861 deleg_cur
= rcu_dereference(nfsi
->delegation
);
862 if (deleg_cur
== NULL
)
865 spin_lock(&deleg_cur
->lock
);
866 if (nfsi
->delegation
!= deleg_cur
||
867 (deleg_cur
->type
& fmode
) != fmode
)
868 goto no_delegation_unlock
;
870 if (delegation
== NULL
)
871 delegation
= &deleg_cur
->stateid
;
872 else if (memcmp(deleg_cur
->stateid
.data
, delegation
->data
, NFS4_STATEID_SIZE
) != 0)
873 goto no_delegation_unlock
;
875 nfs_mark_delegation_referenced(deleg_cur
);
876 __update_open_stateid(state
, open_stateid
, &deleg_cur
->stateid
, fmode
);
878 no_delegation_unlock
:
879 spin_unlock(&deleg_cur
->lock
);
883 if (!ret
&& open_stateid
!= NULL
) {
884 __update_open_stateid(state
, open_stateid
, NULL
, fmode
);
892 static void nfs4_return_incompatible_delegation(struct inode
*inode
, fmode_t fmode
)
894 struct nfs_delegation
*delegation
;
897 delegation
= rcu_dereference(NFS_I(inode
)->delegation
);
898 if (delegation
== NULL
|| (delegation
->type
& fmode
) == fmode
) {
903 nfs_inode_return_delegation(inode
);
906 static struct nfs4_state
*nfs4_try_open_cached(struct nfs4_opendata
*opendata
)
908 struct nfs4_state
*state
= opendata
->state
;
909 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
910 struct nfs_delegation
*delegation
;
911 int open_mode
= opendata
->o_arg
.open_flags
& O_EXCL
;
912 fmode_t fmode
= opendata
->o_arg
.fmode
;
913 nfs4_stateid stateid
;
917 if (can_open_cached(state
, fmode
, open_mode
)) {
918 spin_lock(&state
->owner
->so_lock
);
919 if (can_open_cached(state
, fmode
, open_mode
)) {
920 update_open_stateflags(state
, fmode
);
921 spin_unlock(&state
->owner
->so_lock
);
922 goto out_return_state
;
924 spin_unlock(&state
->owner
->so_lock
);
927 delegation
= rcu_dereference(nfsi
->delegation
);
928 if (delegation
== NULL
||
929 !can_open_delegated(delegation
, fmode
)) {
933 /* Save the delegation */
934 memcpy(stateid
.data
, delegation
->stateid
.data
, sizeof(stateid
.data
));
936 ret
= nfs_may_open(state
->inode
, state
->owner
->so_cred
, open_mode
);
941 /* Try to update the stateid using the delegation */
942 if (update_open_stateid(state
, NULL
, &stateid
, fmode
))
943 goto out_return_state
;
948 atomic_inc(&state
->count
);
952 static struct nfs4_state
*nfs4_opendata_to_nfs4_state(struct nfs4_opendata
*data
)
955 struct nfs4_state
*state
= NULL
;
956 struct nfs_delegation
*delegation
;
959 if (!data
->rpc_done
) {
960 state
= nfs4_try_open_cached(data
);
965 if (!(data
->f_attr
.valid
& NFS_ATTR_FATTR
))
967 inode
= nfs_fhget(data
->dir
->d_sb
, &data
->o_res
.fh
, &data
->f_attr
);
968 ret
= PTR_ERR(inode
);
972 state
= nfs4_get_open_state(inode
, data
->owner
);
975 if (data
->o_res
.delegation_type
!= 0) {
976 int delegation_flags
= 0;
979 delegation
= rcu_dereference(NFS_I(inode
)->delegation
);
981 delegation_flags
= delegation
->flags
;
983 if ((delegation_flags
& 1UL<<NFS_DELEGATION_NEED_RECLAIM
) == 0)
984 nfs_inode_set_delegation(state
->inode
,
985 data
->owner
->so_cred
,
988 nfs_inode_reclaim_delegation(state
->inode
,
989 data
->owner
->so_cred
,
993 update_open_stateid(state
, &data
->o_res
.stateid
, NULL
,
1001 return ERR_PTR(ret
);
1004 static struct nfs_open_context
*nfs4_state_find_open_context(struct nfs4_state
*state
)
1006 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
1007 struct nfs_open_context
*ctx
;
1009 spin_lock(&state
->inode
->i_lock
);
1010 list_for_each_entry(ctx
, &nfsi
->open_files
, list
) {
1011 if (ctx
->state
!= state
)
1013 get_nfs_open_context(ctx
);
1014 spin_unlock(&state
->inode
->i_lock
);
1017 spin_unlock(&state
->inode
->i_lock
);
1018 return ERR_PTR(-ENOENT
);
1021 static struct nfs4_opendata
*nfs4_open_recoverdata_alloc(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1023 struct nfs4_opendata
*opendata
;
1025 opendata
= nfs4_opendata_alloc(&ctx
->path
, state
->owner
, 0, 0, NULL
);
1026 if (opendata
== NULL
)
1027 return ERR_PTR(-ENOMEM
);
1028 opendata
->state
= state
;
1029 atomic_inc(&state
->count
);
1033 static int nfs4_open_recover_helper(struct nfs4_opendata
*opendata
, fmode_t fmode
, struct nfs4_state
**res
)
1035 struct nfs4_state
*newstate
;
1038 opendata
->o_arg
.open_flags
= 0;
1039 opendata
->o_arg
.fmode
= fmode
;
1040 memset(&opendata
->o_res
, 0, sizeof(opendata
->o_res
));
1041 memset(&opendata
->c_res
, 0, sizeof(opendata
->c_res
));
1042 nfs4_init_opendata_res(opendata
);
1043 ret
= _nfs4_proc_open(opendata
);
1046 newstate
= nfs4_opendata_to_nfs4_state(opendata
);
1047 if (IS_ERR(newstate
))
1048 return PTR_ERR(newstate
);
1049 nfs4_close_state(&opendata
->path
, newstate
, fmode
);
1054 static int nfs4_open_recover(struct nfs4_opendata
*opendata
, struct nfs4_state
*state
)
1056 struct nfs4_state
*newstate
;
1059 /* memory barrier prior to reading state->n_* */
1060 clear_bit(NFS_DELEGATED_STATE
, &state
->flags
);
1062 if (state
->n_rdwr
!= 0) {
1063 ret
= nfs4_open_recover_helper(opendata
, FMODE_READ
|FMODE_WRITE
, &newstate
);
1066 if (newstate
!= state
)
1069 if (state
->n_wronly
!= 0) {
1070 ret
= nfs4_open_recover_helper(opendata
, FMODE_WRITE
, &newstate
);
1073 if (newstate
!= state
)
1076 if (state
->n_rdonly
!= 0) {
1077 ret
= nfs4_open_recover_helper(opendata
, FMODE_READ
, &newstate
);
1080 if (newstate
!= state
)
1084 * We may have performed cached opens for all three recoveries.
1085 * Check if we need to update the current stateid.
1087 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0 &&
1088 memcmp(state
->stateid
.data
, state
->open_stateid
.data
, sizeof(state
->stateid
.data
)) != 0) {
1089 write_seqlock(&state
->seqlock
);
1090 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) == 0)
1091 memcpy(state
->stateid
.data
, state
->open_stateid
.data
, sizeof(state
->stateid
.data
));
1092 write_sequnlock(&state
->seqlock
);
1099 * reclaim state on the server after a reboot.
1101 static int _nfs4_do_open_reclaim(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1103 struct nfs_delegation
*delegation
;
1104 struct nfs4_opendata
*opendata
;
1105 fmode_t delegation_type
= 0;
1108 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
);
1109 if (IS_ERR(opendata
))
1110 return PTR_ERR(opendata
);
1111 opendata
->o_arg
.claim
= NFS4_OPEN_CLAIM_PREVIOUS
;
1112 opendata
->o_arg
.fh
= NFS_FH(state
->inode
);
1114 delegation
= rcu_dereference(NFS_I(state
->inode
)->delegation
);
1115 if (delegation
!= NULL
&& test_bit(NFS_DELEGATION_NEED_RECLAIM
, &delegation
->flags
) != 0)
1116 delegation_type
= delegation
->type
;
1118 opendata
->o_arg
.u
.delegation_type
= delegation_type
;
1119 status
= nfs4_open_recover(opendata
, state
);
1120 nfs4_opendata_put(opendata
);
1124 static int nfs4_do_open_reclaim(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1126 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1127 struct nfs4_exception exception
= { };
1130 err
= _nfs4_do_open_reclaim(ctx
, state
);
1131 if (err
!= -NFS4ERR_DELAY
)
1133 nfs4_handle_exception(server
, err
, &exception
);
1134 } while (exception
.retry
);
1138 static int nfs4_open_reclaim(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
1140 struct nfs_open_context
*ctx
;
1143 ctx
= nfs4_state_find_open_context(state
);
1145 return PTR_ERR(ctx
);
1146 ret
= nfs4_do_open_reclaim(ctx
, state
);
1147 put_nfs_open_context(ctx
);
1151 static int _nfs4_open_delegation_recall(struct nfs_open_context
*ctx
, struct nfs4_state
*state
, const nfs4_stateid
*stateid
)
1153 struct nfs4_opendata
*opendata
;
1156 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
);
1157 if (IS_ERR(opendata
))
1158 return PTR_ERR(opendata
);
1159 opendata
->o_arg
.claim
= NFS4_OPEN_CLAIM_DELEGATE_CUR
;
1160 memcpy(opendata
->o_arg
.u
.delegation
.data
, stateid
->data
,
1161 sizeof(opendata
->o_arg
.u
.delegation
.data
));
1162 ret
= nfs4_open_recover(opendata
, state
);
1163 nfs4_opendata_put(opendata
);
1167 int nfs4_open_delegation_recall(struct nfs_open_context
*ctx
, struct nfs4_state
*state
, const nfs4_stateid
*stateid
)
1169 struct nfs4_exception exception
= { };
1170 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1173 err
= _nfs4_open_delegation_recall(ctx
, state
, stateid
);
1179 case -NFS4ERR_STALE_CLIENTID
:
1180 case -NFS4ERR_STALE_STATEID
:
1181 case -NFS4ERR_EXPIRED
:
1182 /* Don't recall a delegation if it was lost */
1183 nfs4_schedule_state_recovery(server
->nfs_client
);
1187 * The show must go on: exit, but mark the
1188 * stateid as needing recovery.
1190 case -NFS4ERR_ADMIN_REVOKED
:
1191 case -NFS4ERR_BAD_STATEID
:
1192 nfs4_state_mark_reclaim_nograce(server
->nfs_client
, state
);
1197 err
= nfs4_handle_exception(server
, err
, &exception
);
1198 } while (exception
.retry
);
1203 static void nfs4_open_confirm_done(struct rpc_task
*task
, void *calldata
)
1205 struct nfs4_opendata
*data
= calldata
;
1207 data
->rpc_status
= task
->tk_status
;
1208 if (RPC_ASSASSINATED(task
))
1210 if (data
->rpc_status
== 0) {
1211 memcpy(data
->o_res
.stateid
.data
, data
->c_res
.stateid
.data
,
1212 sizeof(data
->o_res
.stateid
.data
));
1213 nfs_confirm_seqid(&data
->owner
->so_seqid
, 0);
1214 renew_lease(data
->o_res
.server
, data
->timestamp
);
1219 static void nfs4_open_confirm_release(void *calldata
)
1221 struct nfs4_opendata
*data
= calldata
;
1222 struct nfs4_state
*state
= NULL
;
1224 /* If this request hasn't been cancelled, do nothing */
1225 if (data
->cancelled
== 0)
1227 /* In case of error, no cleanup! */
1228 if (!data
->rpc_done
)
1230 state
= nfs4_opendata_to_nfs4_state(data
);
1232 nfs4_close_state(&data
->path
, state
, data
->o_arg
.fmode
);
1234 nfs4_opendata_put(data
);
1237 static const struct rpc_call_ops nfs4_open_confirm_ops
= {
1238 .rpc_call_done
= nfs4_open_confirm_done
,
1239 .rpc_release
= nfs4_open_confirm_release
,
1243 * Note: On error, nfs4_proc_open_confirm will free the struct nfs4_opendata
1245 static int _nfs4_proc_open_confirm(struct nfs4_opendata
*data
)
1247 struct nfs_server
*server
= NFS_SERVER(data
->dir
->d_inode
);
1248 struct rpc_task
*task
;
1249 struct rpc_message msg
= {
1250 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_CONFIRM
],
1251 .rpc_argp
= &data
->c_arg
,
1252 .rpc_resp
= &data
->c_res
,
1253 .rpc_cred
= data
->owner
->so_cred
,
1255 struct rpc_task_setup task_setup_data
= {
1256 .rpc_client
= server
->client
,
1257 .rpc_message
= &msg
,
1258 .callback_ops
= &nfs4_open_confirm_ops
,
1259 .callback_data
= data
,
1260 .workqueue
= nfsiod_workqueue
,
1261 .flags
= RPC_TASK_ASYNC
,
1265 kref_get(&data
->kref
);
1267 data
->rpc_status
= 0;
1268 data
->timestamp
= jiffies
;
1269 task
= rpc_run_task(&task_setup_data
);
1271 return PTR_ERR(task
);
1272 status
= nfs4_wait_for_completion_rpc_task(task
);
1274 data
->cancelled
= 1;
1277 status
= data
->rpc_status
;
1282 static void nfs4_open_prepare(struct rpc_task
*task
, void *calldata
)
1284 struct nfs4_opendata
*data
= calldata
;
1285 struct nfs4_state_owner
*sp
= data
->owner
;
1287 if (nfs_wait_on_sequence(data
->o_arg
.seqid
, task
) != 0)
1290 * Check if we still need to send an OPEN call, or if we can use
1291 * a delegation instead.
1293 if (data
->state
!= NULL
) {
1294 struct nfs_delegation
*delegation
;
1296 if (can_open_cached(data
->state
, data
->o_arg
.fmode
, data
->o_arg
.open_flags
))
1299 delegation
= rcu_dereference(NFS_I(data
->state
->inode
)->delegation
);
1300 if (delegation
!= NULL
&&
1301 test_bit(NFS_DELEGATION_NEED_RECLAIM
, &delegation
->flags
) == 0) {
1307 /* Update sequence id. */
1308 data
->o_arg
.id
= sp
->so_owner_id
.id
;
1309 data
->o_arg
.clientid
= sp
->so_client
->cl_clientid
;
1310 if (data
->o_arg
.claim
== NFS4_OPEN_CLAIM_PREVIOUS
) {
1311 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_NOATTR
];
1312 nfs_copy_fh(&data
->o_res
.fh
, data
->o_arg
.fh
);
1314 data
->timestamp
= jiffies
;
1315 if (nfs4_setup_sequence(data
->o_arg
.server
->nfs_client
,
1316 &data
->o_arg
.seq_args
,
1317 &data
->o_res
.seq_res
, 1, task
))
1319 rpc_call_start(task
);
1322 task
->tk_action
= NULL
;
1326 static void nfs4_open_done(struct rpc_task
*task
, void *calldata
)
1328 struct nfs4_opendata
*data
= calldata
;
1330 data
->rpc_status
= task
->tk_status
;
1332 nfs4_sequence_done_free_slot(data
->o_arg
.server
, &data
->o_res
.seq_res
,
1335 if (RPC_ASSASSINATED(task
))
1337 if (task
->tk_status
== 0) {
1338 switch (data
->o_res
.f_attr
->mode
& S_IFMT
) {
1342 data
->rpc_status
= -ELOOP
;
1345 data
->rpc_status
= -EISDIR
;
1348 data
->rpc_status
= -ENOTDIR
;
1350 renew_lease(data
->o_res
.server
, data
->timestamp
);
1351 if (!(data
->o_res
.rflags
& NFS4_OPEN_RESULT_CONFIRM
))
1352 nfs_confirm_seqid(&data
->owner
->so_seqid
, 0);
1357 static void nfs4_open_release(void *calldata
)
1359 struct nfs4_opendata
*data
= calldata
;
1360 struct nfs4_state
*state
= NULL
;
1362 /* If this request hasn't been cancelled, do nothing */
1363 if (data
->cancelled
== 0)
1365 /* In case of error, no cleanup! */
1366 if (data
->rpc_status
!= 0 || !data
->rpc_done
)
1368 /* In case we need an open_confirm, no cleanup! */
1369 if (data
->o_res
.rflags
& NFS4_OPEN_RESULT_CONFIRM
)
1371 state
= nfs4_opendata_to_nfs4_state(data
);
1373 nfs4_close_state(&data
->path
, state
, data
->o_arg
.fmode
);
1375 nfs4_opendata_put(data
);
1378 static const struct rpc_call_ops nfs4_open_ops
= {
1379 .rpc_call_prepare
= nfs4_open_prepare
,
1380 .rpc_call_done
= nfs4_open_done
,
1381 .rpc_release
= nfs4_open_release
,
1385 * Note: On error, nfs4_proc_open will free the struct nfs4_opendata
1387 static int _nfs4_proc_open(struct nfs4_opendata
*data
)
1389 struct inode
*dir
= data
->dir
->d_inode
;
1390 struct nfs_server
*server
= NFS_SERVER(dir
);
1391 struct nfs_openargs
*o_arg
= &data
->o_arg
;
1392 struct nfs_openres
*o_res
= &data
->o_res
;
1393 struct rpc_task
*task
;
1394 struct rpc_message msg
= {
1395 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN
],
1398 .rpc_cred
= data
->owner
->so_cred
,
1400 struct rpc_task_setup task_setup_data
= {
1401 .rpc_client
= server
->client
,
1402 .rpc_message
= &msg
,
1403 .callback_ops
= &nfs4_open_ops
,
1404 .callback_data
= data
,
1405 .workqueue
= nfsiod_workqueue
,
1406 .flags
= RPC_TASK_ASYNC
,
1410 kref_get(&data
->kref
);
1412 data
->rpc_status
= 0;
1413 data
->cancelled
= 0;
1414 task
= rpc_run_task(&task_setup_data
);
1416 return PTR_ERR(task
);
1417 status
= nfs4_wait_for_completion_rpc_task(task
);
1419 data
->cancelled
= 1;
1422 status
= data
->rpc_status
;
1424 if (status
!= 0 || !data
->rpc_done
)
1427 if (o_res
->fh
.size
== 0)
1428 _nfs4_proc_lookup(dir
, o_arg
->name
, &o_res
->fh
, o_res
->f_attr
);
1430 if (o_arg
->open_flags
& O_CREAT
) {
1431 update_changeattr(dir
, &o_res
->cinfo
);
1432 nfs_post_op_update_inode(dir
, o_res
->dir_attr
);
1434 nfs_refresh_inode(dir
, o_res
->dir_attr
);
1435 if(o_res
->rflags
& NFS4_OPEN_RESULT_CONFIRM
) {
1436 status
= _nfs4_proc_open_confirm(data
);
1440 if (!(o_res
->f_attr
->valid
& NFS_ATTR_FATTR
))
1441 _nfs4_proc_getattr(server
, &o_res
->fh
, o_res
->f_attr
);
1445 static int nfs4_recover_expired_lease(struct nfs_server
*server
)
1447 struct nfs_client
*clp
= server
->nfs_client
;
1451 ret
= nfs4_wait_clnt_recover(clp
);
1454 if (!test_bit(NFS4CLNT_LEASE_EXPIRED
, &clp
->cl_state
) &&
1455 !test_bit(NFS4CLNT_CHECK_LEASE
,&clp
->cl_state
))
1457 nfs4_schedule_state_recovery(clp
);
1464 * reclaim state on the server after a network partition.
1465 * Assumes caller holds the appropriate lock
1467 static int _nfs4_open_expired(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1469 struct nfs4_opendata
*opendata
;
1472 opendata
= nfs4_open_recoverdata_alloc(ctx
, state
);
1473 if (IS_ERR(opendata
))
1474 return PTR_ERR(opendata
);
1475 ret
= nfs4_open_recover(opendata
, state
);
1477 d_drop(ctx
->path
.dentry
);
1478 nfs4_opendata_put(opendata
);
1482 static inline int nfs4_do_open_expired(struct nfs_open_context
*ctx
, struct nfs4_state
*state
)
1484 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1485 struct nfs4_exception exception
= { };
1489 err
= _nfs4_open_expired(ctx
, state
);
1490 if (err
!= -NFS4ERR_DELAY
)
1492 nfs4_handle_exception(server
, err
, &exception
);
1493 } while (exception
.retry
);
1497 static int nfs4_open_expired(struct nfs4_state_owner
*sp
, struct nfs4_state
*state
)
1499 struct nfs_open_context
*ctx
;
1502 ctx
= nfs4_state_find_open_context(state
);
1504 return PTR_ERR(ctx
);
1505 ret
= nfs4_do_open_expired(ctx
, state
);
1506 put_nfs_open_context(ctx
);
1511 * on an EXCLUSIVE create, the server should send back a bitmask with FATTR4-*
1512 * fields corresponding to attributes that were used to store the verifier.
1513 * Make sure we clobber those fields in the later setattr call
1515 static inline void nfs4_exclusive_attrset(struct nfs4_opendata
*opendata
, struct iattr
*sattr
)
1517 if ((opendata
->o_res
.attrset
[1] & FATTR4_WORD1_TIME_ACCESS
) &&
1518 !(sattr
->ia_valid
& ATTR_ATIME_SET
))
1519 sattr
->ia_valid
|= ATTR_ATIME
;
1521 if ((opendata
->o_res
.attrset
[1] & FATTR4_WORD1_TIME_MODIFY
) &&
1522 !(sattr
->ia_valid
& ATTR_MTIME_SET
))
1523 sattr
->ia_valid
|= ATTR_MTIME
;
1527 * Returns a referenced nfs4_state
1529 static int _nfs4_do_open(struct inode
*dir
, struct path
*path
, fmode_t fmode
, int flags
, struct iattr
*sattr
, struct rpc_cred
*cred
, struct nfs4_state
**res
)
1531 struct nfs4_state_owner
*sp
;
1532 struct nfs4_state
*state
= NULL
;
1533 struct nfs_server
*server
= NFS_SERVER(dir
);
1534 struct nfs4_opendata
*opendata
;
1537 /* Protect against reboot recovery conflicts */
1539 if (!(sp
= nfs4_get_state_owner(server
, cred
))) {
1540 dprintk("nfs4_do_open: nfs4_get_state_owner failed!\n");
1543 status
= nfs4_recover_expired_lease(server
);
1545 goto err_put_state_owner
;
1546 if (path
->dentry
->d_inode
!= NULL
)
1547 nfs4_return_incompatible_delegation(path
->dentry
->d_inode
, fmode
);
1549 opendata
= nfs4_opendata_alloc(path
, sp
, fmode
, flags
, sattr
);
1550 if (opendata
== NULL
)
1551 goto err_put_state_owner
;
1553 if (path
->dentry
->d_inode
!= NULL
)
1554 opendata
->state
= nfs4_get_open_state(path
->dentry
->d_inode
, sp
);
1556 status
= _nfs4_proc_open(opendata
);
1558 goto err_opendata_put
;
1560 if (opendata
->o_arg
.open_flags
& O_EXCL
)
1561 nfs4_exclusive_attrset(opendata
, sattr
);
1563 state
= nfs4_opendata_to_nfs4_state(opendata
);
1564 status
= PTR_ERR(state
);
1566 goto err_opendata_put
;
1567 nfs4_opendata_put(opendata
);
1568 nfs4_put_state_owner(sp
);
1572 nfs4_opendata_put(opendata
);
1573 err_put_state_owner
:
1574 nfs4_put_state_owner(sp
);
1581 static struct nfs4_state
*nfs4_do_open(struct inode
*dir
, struct path
*path
, fmode_t fmode
, int flags
, struct iattr
*sattr
, struct rpc_cred
*cred
)
1583 struct nfs4_exception exception
= { };
1584 struct nfs4_state
*res
;
1588 status
= _nfs4_do_open(dir
, path
, fmode
, flags
, sattr
, cred
, &res
);
1591 /* NOTE: BAD_SEQID means the server and client disagree about the
1592 * book-keeping w.r.t. state-changing operations
1593 * (OPEN/CLOSE/LOCK/LOCKU...)
1594 * It is actually a sign of a bug on the client or on the server.
1596 * If we receive a BAD_SEQID error in the particular case of
1597 * doing an OPEN, we assume that nfs_increment_open_seqid() will
1598 * have unhashed the old state_owner for us, and that we can
1599 * therefore safely retry using a new one. We should still warn
1600 * the user though...
1602 if (status
== -NFS4ERR_BAD_SEQID
) {
1603 printk(KERN_WARNING
"NFS: v4 server %s "
1604 " returned a bad sequence-id error!\n",
1605 NFS_SERVER(dir
)->nfs_client
->cl_hostname
);
1606 exception
.retry
= 1;
1610 * BAD_STATEID on OPEN means that the server cancelled our
1611 * state before it received the OPEN_CONFIRM.
1612 * Recover by retrying the request as per the discussion
1613 * on Page 181 of RFC3530.
1615 if (status
== -NFS4ERR_BAD_STATEID
) {
1616 exception
.retry
= 1;
1619 if (status
== -EAGAIN
) {
1620 /* We must have found a delegation */
1621 exception
.retry
= 1;
1624 res
= ERR_PTR(nfs4_handle_exception(NFS_SERVER(dir
),
1625 status
, &exception
));
1626 } while (exception
.retry
);
1630 static int _nfs4_do_setattr(struct inode
*inode
, struct rpc_cred
*cred
,
1631 struct nfs_fattr
*fattr
, struct iattr
*sattr
,
1632 struct nfs4_state
*state
)
1634 struct nfs_server
*server
= NFS_SERVER(inode
);
1635 struct nfs_setattrargs arg
= {
1636 .fh
= NFS_FH(inode
),
1639 .bitmask
= server
->attr_bitmask
,
1641 struct nfs_setattrres res
= {
1645 struct rpc_message msg
= {
1646 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETATTR
],
1651 unsigned long timestamp
= jiffies
;
1654 nfs_fattr_init(fattr
);
1656 if (nfs4_copy_delegation_stateid(&arg
.stateid
, inode
)) {
1657 /* Use that stateid */
1658 } else if (state
!= NULL
) {
1659 nfs4_copy_stateid(&arg
.stateid
, state
, current
->files
);
1661 memcpy(&arg
.stateid
, &zero_stateid
, sizeof(arg
.stateid
));
1663 status
= nfs4_call_sync(server
, &msg
, &arg
, &res
, 1);
1664 if (status
== 0 && state
!= NULL
)
1665 renew_lease(server
, timestamp
);
1669 static int nfs4_do_setattr(struct inode
*inode
, struct rpc_cred
*cred
,
1670 struct nfs_fattr
*fattr
, struct iattr
*sattr
,
1671 struct nfs4_state
*state
)
1673 struct nfs_server
*server
= NFS_SERVER(inode
);
1674 struct nfs4_exception exception
= { };
1677 err
= nfs4_handle_exception(server
,
1678 _nfs4_do_setattr(inode
, cred
, fattr
, sattr
, state
),
1680 } while (exception
.retry
);
1684 struct nfs4_closedata
{
1686 struct inode
*inode
;
1687 struct nfs4_state
*state
;
1688 struct nfs_closeargs arg
;
1689 struct nfs_closeres res
;
1690 struct nfs_fattr fattr
;
1691 unsigned long timestamp
;
1694 static void nfs4_free_closedata(void *data
)
1696 struct nfs4_closedata
*calldata
= data
;
1697 struct nfs4_state_owner
*sp
= calldata
->state
->owner
;
1699 nfs4_put_open_state(calldata
->state
);
1700 nfs_free_seqid(calldata
->arg
.seqid
);
1701 nfs4_put_state_owner(sp
);
1702 path_put(&calldata
->path
);
1706 static void nfs4_close_done(struct rpc_task
*task
, void *data
)
1708 struct nfs4_closedata
*calldata
= data
;
1709 struct nfs4_state
*state
= calldata
->state
;
1710 struct nfs_server
*server
= NFS_SERVER(calldata
->inode
);
1712 nfs4_sequence_done(server
, &calldata
->res
.seq_res
, task
->tk_status
);
1713 if (RPC_ASSASSINATED(task
))
1715 /* hmm. we are done with the inode, and in the process of freeing
1716 * the state_owner. we keep this around to process errors
1718 switch (task
->tk_status
) {
1720 nfs_set_open_stateid(state
, &calldata
->res
.stateid
, 0);
1721 renew_lease(server
, calldata
->timestamp
);
1723 case -NFS4ERR_STALE_STATEID
:
1724 case -NFS4ERR_OLD_STATEID
:
1725 case -NFS4ERR_BAD_STATEID
:
1726 case -NFS4ERR_EXPIRED
:
1727 if (calldata
->arg
.fmode
== 0)
1730 if (nfs4_async_handle_error(task
, server
, state
) == -EAGAIN
) {
1731 nfs4_restart_rpc(task
, server
->nfs_client
);
1735 nfs4_sequence_free_slot(server
->nfs_client
, &calldata
->res
.seq_res
);
1736 nfs_refresh_inode(calldata
->inode
, calldata
->res
.fattr
);
1739 static void nfs4_close_prepare(struct rpc_task
*task
, void *data
)
1741 struct nfs4_closedata
*calldata
= data
;
1742 struct nfs4_state
*state
= calldata
->state
;
1743 int clear_rd
, clear_wr
, clear_rdwr
;
1745 if (nfs_wait_on_sequence(calldata
->arg
.seqid
, task
) != 0)
1748 clear_rd
= clear_wr
= clear_rdwr
= 0;
1749 spin_lock(&state
->owner
->so_lock
);
1750 /* Calculate the change in open mode */
1751 if (state
->n_rdwr
== 0) {
1752 if (state
->n_rdonly
== 0) {
1753 clear_rd
|= test_and_clear_bit(NFS_O_RDONLY_STATE
, &state
->flags
);
1754 clear_rdwr
|= test_and_clear_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1756 if (state
->n_wronly
== 0) {
1757 clear_wr
|= test_and_clear_bit(NFS_O_WRONLY_STATE
, &state
->flags
);
1758 clear_rdwr
|= test_and_clear_bit(NFS_O_RDWR_STATE
, &state
->flags
);
1761 spin_unlock(&state
->owner
->so_lock
);
1762 if (!clear_rd
&& !clear_wr
&& !clear_rdwr
) {
1763 /* Note: exit _without_ calling nfs4_close_done */
1764 task
->tk_action
= NULL
;
1767 nfs_fattr_init(calldata
->res
.fattr
);
1768 if (test_bit(NFS_O_RDONLY_STATE
, &state
->flags
) != 0) {
1769 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_DOWNGRADE
];
1770 calldata
->arg
.fmode
= FMODE_READ
;
1771 } else if (test_bit(NFS_O_WRONLY_STATE
, &state
->flags
) != 0) {
1772 task
->tk_msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_OPEN_DOWNGRADE
];
1773 calldata
->arg
.fmode
= FMODE_WRITE
;
1775 calldata
->timestamp
= jiffies
;
1776 if (nfs4_setup_sequence((NFS_SERVER(calldata
->inode
))->nfs_client
,
1777 &calldata
->arg
.seq_args
, &calldata
->res
.seq_res
,
1780 rpc_call_start(task
);
1783 static const struct rpc_call_ops nfs4_close_ops
= {
1784 .rpc_call_prepare
= nfs4_close_prepare
,
1785 .rpc_call_done
= nfs4_close_done
,
1786 .rpc_release
= nfs4_free_closedata
,
1790 * It is possible for data to be read/written from a mem-mapped file
1791 * after the sys_close call (which hits the vfs layer as a flush).
1792 * This means that we can't safely call nfsv4 close on a file until
1793 * the inode is cleared. This in turn means that we are not good
1794 * NFSv4 citizens - we do not indicate to the server to update the file's
1795 * share state even when we are done with one of the three share
1796 * stateid's in the inode.
1798 * NOTE: Caller must be holding the sp->so_owner semaphore!
1800 int nfs4_do_close(struct path
*path
, struct nfs4_state
*state
, int wait
)
1802 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
1803 struct nfs4_closedata
*calldata
;
1804 struct nfs4_state_owner
*sp
= state
->owner
;
1805 struct rpc_task
*task
;
1806 struct rpc_message msg
= {
1807 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CLOSE
],
1808 .rpc_cred
= state
->owner
->so_cred
,
1810 struct rpc_task_setup task_setup_data
= {
1811 .rpc_client
= server
->client
,
1812 .rpc_message
= &msg
,
1813 .callback_ops
= &nfs4_close_ops
,
1814 .workqueue
= nfsiod_workqueue
,
1815 .flags
= RPC_TASK_ASYNC
,
1817 int status
= -ENOMEM
;
1819 calldata
= kzalloc(sizeof(*calldata
), GFP_KERNEL
);
1820 if (calldata
== NULL
)
1822 calldata
->inode
= state
->inode
;
1823 calldata
->state
= state
;
1824 calldata
->arg
.fh
= NFS_FH(state
->inode
);
1825 calldata
->arg
.stateid
= &state
->open_stateid
;
1826 if (nfs4_has_session(server
->nfs_client
))
1827 memset(calldata
->arg
.stateid
->data
, 0, 4); /* clear seqid */
1828 /* Serialization for the sequence id */
1829 calldata
->arg
.seqid
= nfs_alloc_seqid(&state
->owner
->so_seqid
);
1830 if (calldata
->arg
.seqid
== NULL
)
1831 goto out_free_calldata
;
1832 calldata
->arg
.fmode
= 0;
1833 calldata
->arg
.bitmask
= server
->cache_consistency_bitmask
;
1834 calldata
->res
.fattr
= &calldata
->fattr
;
1835 calldata
->res
.seqid
= calldata
->arg
.seqid
;
1836 calldata
->res
.server
= server
;
1837 calldata
->res
.seq_res
.sr_slotid
= NFS4_MAX_SLOT_TABLE
;
1838 calldata
->path
.mnt
= mntget(path
->mnt
);
1839 calldata
->path
.dentry
= dget(path
->dentry
);
1841 msg
.rpc_argp
= &calldata
->arg
,
1842 msg
.rpc_resp
= &calldata
->res
,
1843 task_setup_data
.callback_data
= calldata
;
1844 task
= rpc_run_task(&task_setup_data
);
1846 return PTR_ERR(task
);
1849 status
= rpc_wait_for_completion_task(task
);
1855 nfs4_put_open_state(state
);
1856 nfs4_put_state_owner(sp
);
1860 static int nfs4_intent_set_file(struct nameidata
*nd
, struct path
*path
, struct nfs4_state
*state
, fmode_t fmode
)
1865 /* If the open_intent is for execute, we have an extra check to make */
1866 if (fmode
& FMODE_EXEC
) {
1867 ret
= nfs_may_open(state
->inode
,
1868 state
->owner
->so_cred
,
1869 nd
->intent
.open
.flags
);
1873 filp
= lookup_instantiate_filp(nd
, path
->dentry
, NULL
);
1874 if (!IS_ERR(filp
)) {
1875 struct nfs_open_context
*ctx
;
1876 ctx
= nfs_file_open_context(filp
);
1880 ret
= PTR_ERR(filp
);
1882 nfs4_close_sync(path
, state
, fmode
& (FMODE_READ
|FMODE_WRITE
));
1887 nfs4_atomic_open(struct inode
*dir
, struct dentry
*dentry
, struct nameidata
*nd
)
1889 struct path path
= {
1890 .mnt
= nd
->path
.mnt
,
1893 struct dentry
*parent
;
1895 struct rpc_cred
*cred
;
1896 struct nfs4_state
*state
;
1898 fmode_t fmode
= nd
->intent
.open
.flags
& (FMODE_READ
| FMODE_WRITE
| FMODE_EXEC
);
1900 if (nd
->flags
& LOOKUP_CREATE
) {
1901 attr
.ia_mode
= nd
->intent
.open
.create_mode
;
1902 attr
.ia_valid
= ATTR_MODE
;
1903 if (!IS_POSIXACL(dir
))
1904 attr
.ia_mode
&= ~current_umask();
1907 BUG_ON(nd
->intent
.open
.flags
& O_CREAT
);
1910 cred
= rpc_lookup_cred();
1912 return (struct dentry
*)cred
;
1913 parent
= dentry
->d_parent
;
1914 /* Protect against concurrent sillydeletes */
1915 nfs_block_sillyrename(parent
);
1916 state
= nfs4_do_open(dir
, &path
, fmode
, nd
->intent
.open
.flags
, &attr
, cred
);
1918 if (IS_ERR(state
)) {
1919 if (PTR_ERR(state
) == -ENOENT
) {
1920 d_add(dentry
, NULL
);
1921 nfs_set_verifier(dentry
, nfs_save_change_attribute(dir
));
1923 nfs_unblock_sillyrename(parent
);
1924 return (struct dentry
*)state
;
1926 res
= d_add_unique(dentry
, igrab(state
->inode
));
1929 nfs_set_verifier(path
.dentry
, nfs_save_change_attribute(dir
));
1930 nfs_unblock_sillyrename(parent
);
1931 nfs4_intent_set_file(nd
, &path
, state
, fmode
);
1936 nfs4_open_revalidate(struct inode
*dir
, struct dentry
*dentry
, int openflags
, struct nameidata
*nd
)
1938 struct path path
= {
1939 .mnt
= nd
->path
.mnt
,
1942 struct rpc_cred
*cred
;
1943 struct nfs4_state
*state
;
1944 fmode_t fmode
= openflags
& (FMODE_READ
| FMODE_WRITE
);
1946 cred
= rpc_lookup_cred();
1948 return PTR_ERR(cred
);
1949 state
= nfs4_do_open(dir
, &path
, fmode
, openflags
, NULL
, cred
);
1951 if (IS_ERR(state
)) {
1952 switch (PTR_ERR(state
)) {
1958 lookup_instantiate_filp(nd
, (struct dentry
*)state
, NULL
);
1964 if (state
->inode
== dentry
->d_inode
) {
1965 nfs_set_verifier(dentry
, nfs_save_change_attribute(dir
));
1966 nfs4_intent_set_file(nd
, &path
, state
, fmode
);
1969 nfs4_close_sync(&path
, state
, fmode
);
1975 void nfs4_close_context(struct nfs_open_context
*ctx
, int is_sync
)
1977 if (ctx
->state
== NULL
)
1980 nfs4_close_sync(&ctx
->path
, ctx
->state
, ctx
->mode
);
1982 nfs4_close_state(&ctx
->path
, ctx
->state
, ctx
->mode
);
1985 static int _nfs4_server_capabilities(struct nfs_server
*server
, struct nfs_fh
*fhandle
)
1987 struct nfs4_server_caps_arg args
= {
1990 struct nfs4_server_caps_res res
= {};
1991 struct rpc_message msg
= {
1992 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SERVER_CAPS
],
1998 status
= nfs4_call_sync(server
, &msg
, &args
, &res
, 0);
2000 memcpy(server
->attr_bitmask
, res
.attr_bitmask
, sizeof(server
->attr_bitmask
));
2001 if (res
.attr_bitmask
[0] & FATTR4_WORD0_ACL
)
2002 server
->caps
|= NFS_CAP_ACLS
;
2003 if (res
.has_links
!= 0)
2004 server
->caps
|= NFS_CAP_HARDLINKS
;
2005 if (res
.has_symlinks
!= 0)
2006 server
->caps
|= NFS_CAP_SYMLINKS
;
2007 memcpy(server
->cache_consistency_bitmask
, res
.attr_bitmask
, sizeof(server
->cache_consistency_bitmask
));
2008 server
->cache_consistency_bitmask
[0] &= FATTR4_WORD0_CHANGE
|FATTR4_WORD0_SIZE
;
2009 server
->cache_consistency_bitmask
[1] &= FATTR4_WORD1_TIME_METADATA
|FATTR4_WORD1_TIME_MODIFY
;
2010 server
->acl_bitmask
= res
.acl_bitmask
;
2016 int nfs4_server_capabilities(struct nfs_server
*server
, struct nfs_fh
*fhandle
)
2018 struct nfs4_exception exception
= { };
2021 err
= nfs4_handle_exception(server
,
2022 _nfs4_server_capabilities(server
, fhandle
),
2024 } while (exception
.retry
);
2028 static int _nfs4_lookup_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2029 struct nfs_fsinfo
*info
)
2031 struct nfs4_lookup_root_arg args
= {
2032 .bitmask
= nfs4_fattr_bitmap
,
2034 struct nfs4_lookup_res res
= {
2036 .fattr
= info
->fattr
,
2039 struct rpc_message msg
= {
2040 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOOKUP_ROOT
],
2046 nfs_fattr_init(info
->fattr
);
2047 status
= nfs4_recover_expired_lease(server
);
2049 status
= nfs4_check_client_ready(server
->nfs_client
);
2051 status
= nfs4_call_sync(server
, &msg
, &args
, &res
, 0);
2055 static int nfs4_lookup_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2056 struct nfs_fsinfo
*info
)
2058 struct nfs4_exception exception
= { };
2061 err
= nfs4_handle_exception(server
,
2062 _nfs4_lookup_root(server
, fhandle
, info
),
2064 } while (exception
.retry
);
2069 * get the file handle for the "/" directory on the server
2071 static int nfs4_proc_get_root(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2072 struct nfs_fsinfo
*info
)
2076 status
= nfs4_lookup_root(server
, fhandle
, info
);
2078 status
= nfs4_server_capabilities(server
, fhandle
);
2080 status
= nfs4_do_fsinfo(server
, fhandle
, info
);
2081 return nfs4_map_errors(status
);
2085 * Get locations and (maybe) other attributes of a referral.
2086 * Note that we'll actually follow the referral later when
2087 * we detect fsid mismatch in inode revalidation
2089 static int nfs4_get_referral(struct inode
*dir
, const struct qstr
*name
, struct nfs_fattr
*fattr
, struct nfs_fh
*fhandle
)
2091 int status
= -ENOMEM
;
2092 struct page
*page
= NULL
;
2093 struct nfs4_fs_locations
*locations
= NULL
;
2095 page
= alloc_page(GFP_KERNEL
);
2098 locations
= kmalloc(sizeof(struct nfs4_fs_locations
), GFP_KERNEL
);
2099 if (locations
== NULL
)
2102 status
= nfs4_proc_fs_locations(dir
, name
, locations
, page
);
2105 /* Make sure server returned a different fsid for the referral */
2106 if (nfs_fsid_equal(&NFS_SERVER(dir
)->fsid
, &locations
->fattr
.fsid
)) {
2107 dprintk("%s: server did not return a different fsid for a referral at %s\n", __func__
, name
->name
);
2112 memcpy(fattr
, &locations
->fattr
, sizeof(struct nfs_fattr
));
2113 fattr
->valid
|= NFS_ATTR_FATTR_V4_REFERRAL
;
2115 fattr
->mode
= S_IFDIR
;
2116 memset(fhandle
, 0, sizeof(struct nfs_fh
));
2125 static int _nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
2127 struct nfs4_getattr_arg args
= {
2129 .bitmask
= server
->attr_bitmask
,
2131 struct nfs4_getattr_res res
= {
2135 struct rpc_message msg
= {
2136 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETATTR
],
2141 nfs_fattr_init(fattr
);
2142 return nfs4_call_sync(server
, &msg
, &args
, &res
, 0);
2145 static int nfs4_proc_getattr(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
2147 struct nfs4_exception exception
= { };
2150 err
= nfs4_handle_exception(server
,
2151 _nfs4_proc_getattr(server
, fhandle
, fattr
),
2153 } while (exception
.retry
);
2158 * The file is not closed if it is opened due to the a request to change
2159 * the size of the file. The open call will not be needed once the
2160 * VFS layer lookup-intents are implemented.
2162 * Close is called when the inode is destroyed.
2163 * If we haven't opened the file for O_WRONLY, we
2164 * need to in the size_change case to obtain a stateid.
2167 * Because OPEN is always done by name in nfsv4, it is
2168 * possible that we opened a different file by the same
2169 * name. We can recognize this race condition, but we
2170 * can't do anything about it besides returning an error.
2172 * This will be fixed with VFS changes (lookup-intent).
2175 nfs4_proc_setattr(struct dentry
*dentry
, struct nfs_fattr
*fattr
,
2176 struct iattr
*sattr
)
2178 struct inode
*inode
= dentry
->d_inode
;
2179 struct rpc_cred
*cred
= NULL
;
2180 struct nfs4_state
*state
= NULL
;
2183 nfs_fattr_init(fattr
);
2185 /* Search for an existing open(O_WRITE) file */
2186 if (sattr
->ia_valid
& ATTR_FILE
) {
2187 struct nfs_open_context
*ctx
;
2189 ctx
= nfs_file_open_context(sattr
->ia_file
);
2196 status
= nfs4_do_setattr(inode
, cred
, fattr
, sattr
, state
);
2198 nfs_setattr_update_inode(inode
, sattr
);
2202 static int _nfs4_proc_lookupfh(struct nfs_server
*server
, const struct nfs_fh
*dirfh
,
2203 const struct qstr
*name
, struct nfs_fh
*fhandle
,
2204 struct nfs_fattr
*fattr
)
2207 struct nfs4_lookup_arg args
= {
2208 .bitmask
= server
->attr_bitmask
,
2212 struct nfs4_lookup_res res
= {
2217 struct rpc_message msg
= {
2218 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOOKUP
],
2223 nfs_fattr_init(fattr
);
2225 dprintk("NFS call lookupfh %s\n", name
->name
);
2226 status
= nfs4_call_sync(server
, &msg
, &args
, &res
, 0);
2227 dprintk("NFS reply lookupfh: %d\n", status
);
2231 static int nfs4_proc_lookupfh(struct nfs_server
*server
, struct nfs_fh
*dirfh
,
2232 struct qstr
*name
, struct nfs_fh
*fhandle
,
2233 struct nfs_fattr
*fattr
)
2235 struct nfs4_exception exception
= { };
2238 err
= _nfs4_proc_lookupfh(server
, dirfh
, name
, fhandle
, fattr
);
2240 if (err
== -NFS4ERR_MOVED
) {
2244 err
= nfs4_handle_exception(server
, err
, &exception
);
2245 } while (exception
.retry
);
2249 static int _nfs4_proc_lookup(struct inode
*dir
, const struct qstr
*name
,
2250 struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
2254 dprintk("NFS call lookup %s\n", name
->name
);
2255 status
= _nfs4_proc_lookupfh(NFS_SERVER(dir
), NFS_FH(dir
), name
, fhandle
, fattr
);
2256 if (status
== -NFS4ERR_MOVED
)
2257 status
= nfs4_get_referral(dir
, name
, fattr
, fhandle
);
2258 dprintk("NFS reply lookup: %d\n", status
);
2262 static int nfs4_proc_lookup(struct inode
*dir
, struct qstr
*name
, struct nfs_fh
*fhandle
, struct nfs_fattr
*fattr
)
2264 struct nfs4_exception exception
= { };
2267 err
= nfs4_handle_exception(NFS_SERVER(dir
),
2268 _nfs4_proc_lookup(dir
, name
, fhandle
, fattr
),
2270 } while (exception
.retry
);
2274 static int _nfs4_proc_access(struct inode
*inode
, struct nfs_access_entry
*entry
)
2276 struct nfs_server
*server
= NFS_SERVER(inode
);
2277 struct nfs_fattr fattr
;
2278 struct nfs4_accessargs args
= {
2279 .fh
= NFS_FH(inode
),
2280 .bitmask
= server
->attr_bitmask
,
2282 struct nfs4_accessres res
= {
2286 struct rpc_message msg
= {
2287 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_ACCESS
],
2290 .rpc_cred
= entry
->cred
,
2292 int mode
= entry
->mask
;
2296 * Determine which access bits we want to ask for...
2298 if (mode
& MAY_READ
)
2299 args
.access
|= NFS4_ACCESS_READ
;
2300 if (S_ISDIR(inode
->i_mode
)) {
2301 if (mode
& MAY_WRITE
)
2302 args
.access
|= NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
| NFS4_ACCESS_DELETE
;
2303 if (mode
& MAY_EXEC
)
2304 args
.access
|= NFS4_ACCESS_LOOKUP
;
2306 if (mode
& MAY_WRITE
)
2307 args
.access
|= NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
;
2308 if (mode
& MAY_EXEC
)
2309 args
.access
|= NFS4_ACCESS_EXECUTE
;
2311 nfs_fattr_init(&fattr
);
2312 status
= nfs4_call_sync(server
, &msg
, &args
, &res
, 0);
2315 if (res
.access
& NFS4_ACCESS_READ
)
2316 entry
->mask
|= MAY_READ
;
2317 if (res
.access
& (NFS4_ACCESS_MODIFY
| NFS4_ACCESS_EXTEND
| NFS4_ACCESS_DELETE
))
2318 entry
->mask
|= MAY_WRITE
;
2319 if (res
.access
& (NFS4_ACCESS_LOOKUP
|NFS4_ACCESS_EXECUTE
))
2320 entry
->mask
|= MAY_EXEC
;
2321 nfs_refresh_inode(inode
, &fattr
);
2326 static int nfs4_proc_access(struct inode
*inode
, struct nfs_access_entry
*entry
)
2328 struct nfs4_exception exception
= { };
2331 err
= nfs4_handle_exception(NFS_SERVER(inode
),
2332 _nfs4_proc_access(inode
, entry
),
2334 } while (exception
.retry
);
2339 * TODO: For the time being, we don't try to get any attributes
2340 * along with any of the zero-copy operations READ, READDIR,
2343 * In the case of the first three, we want to put the GETATTR
2344 * after the read-type operation -- this is because it is hard
2345 * to predict the length of a GETATTR response in v4, and thus
2346 * align the READ data correctly. This means that the GETATTR
2347 * may end up partially falling into the page cache, and we should
2348 * shift it into the 'tail' of the xdr_buf before processing.
2349 * To do this efficiently, we need to know the total length
2350 * of data received, which doesn't seem to be available outside
2353 * In the case of WRITE, we also want to put the GETATTR after
2354 * the operation -- in this case because we want to make sure
2355 * we get the post-operation mtime and size. This means that
2356 * we can't use xdr_encode_pages() as written: we need a variant
2357 * of it which would leave room in the 'tail' iovec.
2359 * Both of these changes to the XDR layer would in fact be quite
2360 * minor, but I decided to leave them for a subsequent patch.
2362 static int _nfs4_proc_readlink(struct inode
*inode
, struct page
*page
,
2363 unsigned int pgbase
, unsigned int pglen
)
2365 struct nfs4_readlink args
= {
2366 .fh
= NFS_FH(inode
),
2371 struct nfs4_readlink_res res
;
2372 struct rpc_message msg
= {
2373 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READLINK
],
2378 return nfs4_call_sync(NFS_SERVER(inode
), &msg
, &args
, &res
, 0);
2381 static int nfs4_proc_readlink(struct inode
*inode
, struct page
*page
,
2382 unsigned int pgbase
, unsigned int pglen
)
2384 struct nfs4_exception exception
= { };
2387 err
= nfs4_handle_exception(NFS_SERVER(inode
),
2388 _nfs4_proc_readlink(inode
, page
, pgbase
, pglen
),
2390 } while (exception
.retry
);
2396 * We will need to arrange for the VFS layer to provide an atomic open.
2397 * Until then, this create/open method is prone to inefficiency and race
2398 * conditions due to the lookup, create, and open VFS calls from sys_open()
2399 * placed on the wire.
2401 * Given the above sorry state of affairs, I'm simply sending an OPEN.
2402 * The file will be opened again in the subsequent VFS open call
2403 * (nfs4_proc_file_open).
2405 * The open for read will just hang around to be used by any process that
2406 * opens the file O_RDONLY. This will all be resolved with the VFS changes.
2410 nfs4_proc_create(struct inode
*dir
, struct dentry
*dentry
, struct iattr
*sattr
,
2411 int flags
, struct nameidata
*nd
)
2413 struct path path
= {
2414 .mnt
= nd
->path
.mnt
,
2417 struct nfs4_state
*state
;
2418 struct rpc_cred
*cred
;
2419 fmode_t fmode
= flags
& (FMODE_READ
| FMODE_WRITE
);
2422 cred
= rpc_lookup_cred();
2424 status
= PTR_ERR(cred
);
2427 state
= nfs4_do_open(dir
, &path
, fmode
, flags
, sattr
, cred
);
2429 if (IS_ERR(state
)) {
2430 status
= PTR_ERR(state
);
2433 d_add(dentry
, igrab(state
->inode
));
2434 nfs_set_verifier(dentry
, nfs_save_change_attribute(dir
));
2435 if (flags
& O_EXCL
) {
2436 struct nfs_fattr fattr
;
2437 status
= nfs4_do_setattr(state
->inode
, cred
, &fattr
, sattr
, state
);
2439 nfs_setattr_update_inode(state
->inode
, sattr
);
2440 nfs_post_op_update_inode(state
->inode
, &fattr
);
2442 if (status
== 0 && (nd
->flags
& LOOKUP_OPEN
) != 0)
2443 status
= nfs4_intent_set_file(nd
, &path
, state
, fmode
);
2445 nfs4_close_sync(&path
, state
, fmode
);
2452 static int _nfs4_proc_remove(struct inode
*dir
, struct qstr
*name
)
2454 struct nfs_server
*server
= NFS_SERVER(dir
);
2455 struct nfs_removeargs args
= {
2457 .name
.len
= name
->len
,
2458 .name
.name
= name
->name
,
2459 .bitmask
= server
->attr_bitmask
,
2461 struct nfs_removeres res
= {
2464 struct rpc_message msg
= {
2465 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_REMOVE
],
2471 nfs_fattr_init(&res
.dir_attr
);
2472 status
= nfs4_call_sync(server
, &msg
, &args
, &res
, 1);
2474 update_changeattr(dir
, &res
.cinfo
);
2475 nfs_post_op_update_inode(dir
, &res
.dir_attr
);
2480 static int nfs4_proc_remove(struct inode
*dir
, struct qstr
*name
)
2482 struct nfs4_exception exception
= { };
2485 err
= nfs4_handle_exception(NFS_SERVER(dir
),
2486 _nfs4_proc_remove(dir
, name
),
2488 } while (exception
.retry
);
2492 static void nfs4_proc_unlink_setup(struct rpc_message
*msg
, struct inode
*dir
)
2494 struct nfs_server
*server
= NFS_SERVER(dir
);
2495 struct nfs_removeargs
*args
= msg
->rpc_argp
;
2496 struct nfs_removeres
*res
= msg
->rpc_resp
;
2498 args
->bitmask
= server
->cache_consistency_bitmask
;
2499 res
->server
= server
;
2500 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_REMOVE
];
2503 static int nfs4_proc_unlink_done(struct rpc_task
*task
, struct inode
*dir
)
2505 struct nfs_removeres
*res
= task
->tk_msg
.rpc_resp
;
2507 nfs4_sequence_done(res
->server
, &res
->seq_res
, task
->tk_status
);
2508 if (nfs4_async_handle_error(task
, res
->server
, NULL
) == -EAGAIN
)
2510 nfs4_sequence_free_slot(res
->server
->nfs_client
, &res
->seq_res
);
2511 update_changeattr(dir
, &res
->cinfo
);
2512 nfs_post_op_update_inode(dir
, &res
->dir_attr
);
2516 static int _nfs4_proc_rename(struct inode
*old_dir
, struct qstr
*old_name
,
2517 struct inode
*new_dir
, struct qstr
*new_name
)
2519 struct nfs_server
*server
= NFS_SERVER(old_dir
);
2520 struct nfs4_rename_arg arg
= {
2521 .old_dir
= NFS_FH(old_dir
),
2522 .new_dir
= NFS_FH(new_dir
),
2523 .old_name
= old_name
,
2524 .new_name
= new_name
,
2525 .bitmask
= server
->attr_bitmask
,
2527 struct nfs_fattr old_fattr
, new_fattr
;
2528 struct nfs4_rename_res res
= {
2530 .old_fattr
= &old_fattr
,
2531 .new_fattr
= &new_fattr
,
2533 struct rpc_message msg
= {
2534 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENAME
],
2540 nfs_fattr_init(res
.old_fattr
);
2541 nfs_fattr_init(res
.new_fattr
);
2542 status
= nfs4_call_sync(server
, &msg
, &arg
, &res
, 1);
2545 update_changeattr(old_dir
, &res
.old_cinfo
);
2546 nfs_post_op_update_inode(old_dir
, res
.old_fattr
);
2547 update_changeattr(new_dir
, &res
.new_cinfo
);
2548 nfs_post_op_update_inode(new_dir
, res
.new_fattr
);
2553 static int nfs4_proc_rename(struct inode
*old_dir
, struct qstr
*old_name
,
2554 struct inode
*new_dir
, struct qstr
*new_name
)
2556 struct nfs4_exception exception
= { };
2559 err
= nfs4_handle_exception(NFS_SERVER(old_dir
),
2560 _nfs4_proc_rename(old_dir
, old_name
,
2563 } while (exception
.retry
);
2567 static int _nfs4_proc_link(struct inode
*inode
, struct inode
*dir
, struct qstr
*name
)
2569 struct nfs_server
*server
= NFS_SERVER(inode
);
2570 struct nfs4_link_arg arg
= {
2571 .fh
= NFS_FH(inode
),
2572 .dir_fh
= NFS_FH(dir
),
2574 .bitmask
= server
->attr_bitmask
,
2576 struct nfs_fattr fattr
, dir_attr
;
2577 struct nfs4_link_res res
= {
2580 .dir_attr
= &dir_attr
,
2582 struct rpc_message msg
= {
2583 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LINK
],
2589 nfs_fattr_init(res
.fattr
);
2590 nfs_fattr_init(res
.dir_attr
);
2591 status
= nfs4_call_sync(server
, &msg
, &arg
, &res
, 1);
2593 update_changeattr(dir
, &res
.cinfo
);
2594 nfs_post_op_update_inode(dir
, res
.dir_attr
);
2595 nfs_post_op_update_inode(inode
, res
.fattr
);
2601 static int nfs4_proc_link(struct inode
*inode
, struct inode
*dir
, struct qstr
*name
)
2603 struct nfs4_exception exception
= { };
2606 err
= nfs4_handle_exception(NFS_SERVER(inode
),
2607 _nfs4_proc_link(inode
, dir
, name
),
2609 } while (exception
.retry
);
2613 struct nfs4_createdata
{
2614 struct rpc_message msg
;
2615 struct nfs4_create_arg arg
;
2616 struct nfs4_create_res res
;
2618 struct nfs_fattr fattr
;
2619 struct nfs_fattr dir_fattr
;
2622 static struct nfs4_createdata
*nfs4_alloc_createdata(struct inode
*dir
,
2623 struct qstr
*name
, struct iattr
*sattr
, u32 ftype
)
2625 struct nfs4_createdata
*data
;
2627 data
= kzalloc(sizeof(*data
), GFP_KERNEL
);
2629 struct nfs_server
*server
= NFS_SERVER(dir
);
2631 data
->msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CREATE
];
2632 data
->msg
.rpc_argp
= &data
->arg
;
2633 data
->msg
.rpc_resp
= &data
->res
;
2634 data
->arg
.dir_fh
= NFS_FH(dir
);
2635 data
->arg
.server
= server
;
2636 data
->arg
.name
= name
;
2637 data
->arg
.attrs
= sattr
;
2638 data
->arg
.ftype
= ftype
;
2639 data
->arg
.bitmask
= server
->attr_bitmask
;
2640 data
->res
.server
= server
;
2641 data
->res
.fh
= &data
->fh
;
2642 data
->res
.fattr
= &data
->fattr
;
2643 data
->res
.dir_fattr
= &data
->dir_fattr
;
2644 nfs_fattr_init(data
->res
.fattr
);
2645 nfs_fattr_init(data
->res
.dir_fattr
);
2650 static int nfs4_do_create(struct inode
*dir
, struct dentry
*dentry
, struct nfs4_createdata
*data
)
2652 int status
= nfs4_call_sync(NFS_SERVER(dir
), &data
->msg
,
2653 &data
->arg
, &data
->res
, 1);
2655 update_changeattr(dir
, &data
->res
.dir_cinfo
);
2656 nfs_post_op_update_inode(dir
, data
->res
.dir_fattr
);
2657 status
= nfs_instantiate(dentry
, data
->res
.fh
, data
->res
.fattr
);
2662 static void nfs4_free_createdata(struct nfs4_createdata
*data
)
2667 static int _nfs4_proc_symlink(struct inode
*dir
, struct dentry
*dentry
,
2668 struct page
*page
, unsigned int len
, struct iattr
*sattr
)
2670 struct nfs4_createdata
*data
;
2671 int status
= -ENAMETOOLONG
;
2673 if (len
> NFS4_MAXPATHLEN
)
2677 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4LNK
);
2681 data
->msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SYMLINK
];
2682 data
->arg
.u
.symlink
.pages
= &page
;
2683 data
->arg
.u
.symlink
.len
= len
;
2685 status
= nfs4_do_create(dir
, dentry
, data
);
2687 nfs4_free_createdata(data
);
2692 static int nfs4_proc_symlink(struct inode
*dir
, struct dentry
*dentry
,
2693 struct page
*page
, unsigned int len
, struct iattr
*sattr
)
2695 struct nfs4_exception exception
= { };
2698 err
= nfs4_handle_exception(NFS_SERVER(dir
),
2699 _nfs4_proc_symlink(dir
, dentry
, page
,
2702 } while (exception
.retry
);
2706 static int _nfs4_proc_mkdir(struct inode
*dir
, struct dentry
*dentry
,
2707 struct iattr
*sattr
)
2709 struct nfs4_createdata
*data
;
2710 int status
= -ENOMEM
;
2712 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4DIR
);
2716 status
= nfs4_do_create(dir
, dentry
, data
);
2718 nfs4_free_createdata(data
);
2723 static int nfs4_proc_mkdir(struct inode
*dir
, struct dentry
*dentry
,
2724 struct iattr
*sattr
)
2726 struct nfs4_exception exception
= { };
2729 err
= nfs4_handle_exception(NFS_SERVER(dir
),
2730 _nfs4_proc_mkdir(dir
, dentry
, sattr
),
2732 } while (exception
.retry
);
2736 static int _nfs4_proc_readdir(struct dentry
*dentry
, struct rpc_cred
*cred
,
2737 u64 cookie
, struct page
*page
, unsigned int count
, int plus
)
2739 struct inode
*dir
= dentry
->d_inode
;
2740 struct nfs4_readdir_arg args
= {
2745 .bitmask
= NFS_SERVER(dentry
->d_inode
)->cache_consistency_bitmask
,
2747 struct nfs4_readdir_res res
;
2748 struct rpc_message msg
= {
2749 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READDIR
],
2756 dprintk("%s: dentry = %s/%s, cookie = %Lu\n", __func__
,
2757 dentry
->d_parent
->d_name
.name
,
2758 dentry
->d_name
.name
,
2759 (unsigned long long)cookie
);
2760 nfs4_setup_readdir(cookie
, NFS_COOKIEVERF(dir
), dentry
, &args
);
2761 res
.pgbase
= args
.pgbase
;
2762 status
= nfs4_call_sync(NFS_SERVER(dir
), &msg
, &args
, &res
, 0);
2764 memcpy(NFS_COOKIEVERF(dir
), res
.verifier
.data
, NFS4_VERIFIER_SIZE
);
2766 nfs_invalidate_atime(dir
);
2768 dprintk("%s: returns %d\n", __func__
, status
);
2772 static int nfs4_proc_readdir(struct dentry
*dentry
, struct rpc_cred
*cred
,
2773 u64 cookie
, struct page
*page
, unsigned int count
, int plus
)
2775 struct nfs4_exception exception
= { };
2778 err
= nfs4_handle_exception(NFS_SERVER(dentry
->d_inode
),
2779 _nfs4_proc_readdir(dentry
, cred
, cookie
,
2782 } while (exception
.retry
);
2786 static int _nfs4_proc_mknod(struct inode
*dir
, struct dentry
*dentry
,
2787 struct iattr
*sattr
, dev_t rdev
)
2789 struct nfs4_createdata
*data
;
2790 int mode
= sattr
->ia_mode
;
2791 int status
= -ENOMEM
;
2793 BUG_ON(!(sattr
->ia_valid
& ATTR_MODE
));
2794 BUG_ON(!S_ISFIFO(mode
) && !S_ISBLK(mode
) && !S_ISCHR(mode
) && !S_ISSOCK(mode
));
2796 data
= nfs4_alloc_createdata(dir
, &dentry
->d_name
, sattr
, NF4SOCK
);
2801 data
->arg
.ftype
= NF4FIFO
;
2802 else if (S_ISBLK(mode
)) {
2803 data
->arg
.ftype
= NF4BLK
;
2804 data
->arg
.u
.device
.specdata1
= MAJOR(rdev
);
2805 data
->arg
.u
.device
.specdata2
= MINOR(rdev
);
2807 else if (S_ISCHR(mode
)) {
2808 data
->arg
.ftype
= NF4CHR
;
2809 data
->arg
.u
.device
.specdata1
= MAJOR(rdev
);
2810 data
->arg
.u
.device
.specdata2
= MINOR(rdev
);
2813 status
= nfs4_do_create(dir
, dentry
, data
);
2815 nfs4_free_createdata(data
);
2820 static int nfs4_proc_mknod(struct inode
*dir
, struct dentry
*dentry
,
2821 struct iattr
*sattr
, dev_t rdev
)
2823 struct nfs4_exception exception
= { };
2826 err
= nfs4_handle_exception(NFS_SERVER(dir
),
2827 _nfs4_proc_mknod(dir
, dentry
, sattr
, rdev
),
2829 } while (exception
.retry
);
2833 static int _nfs4_proc_statfs(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2834 struct nfs_fsstat
*fsstat
)
2836 struct nfs4_statfs_arg args
= {
2838 .bitmask
= server
->attr_bitmask
,
2840 struct nfs4_statfs_res res
= {
2843 struct rpc_message msg
= {
2844 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_STATFS
],
2849 nfs_fattr_init(fsstat
->fattr
);
2850 return nfs4_call_sync(server
, &msg
, &args
, &res
, 0);
2853 static int nfs4_proc_statfs(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsstat
*fsstat
)
2855 struct nfs4_exception exception
= { };
2858 err
= nfs4_handle_exception(server
,
2859 _nfs4_proc_statfs(server
, fhandle
, fsstat
),
2861 } while (exception
.retry
);
2865 static int _nfs4_do_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2866 struct nfs_fsinfo
*fsinfo
)
2868 struct nfs4_fsinfo_arg args
= {
2870 .bitmask
= server
->attr_bitmask
,
2872 struct nfs4_fsinfo_res res
= {
2875 struct rpc_message msg
= {
2876 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FSINFO
],
2881 return nfs4_call_sync(server
, &msg
, &args
, &res
, 0);
2884 static int nfs4_do_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsinfo
*fsinfo
)
2886 struct nfs4_exception exception
= { };
2890 err
= nfs4_handle_exception(server
,
2891 _nfs4_do_fsinfo(server
, fhandle
, fsinfo
),
2893 } while (exception
.retry
);
2897 static int nfs4_proc_fsinfo(struct nfs_server
*server
, struct nfs_fh
*fhandle
, struct nfs_fsinfo
*fsinfo
)
2899 nfs_fattr_init(fsinfo
->fattr
);
2900 return nfs4_do_fsinfo(server
, fhandle
, fsinfo
);
2903 static int _nfs4_proc_pathconf(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2904 struct nfs_pathconf
*pathconf
)
2906 struct nfs4_pathconf_arg args
= {
2908 .bitmask
= server
->attr_bitmask
,
2910 struct nfs4_pathconf_res res
= {
2911 .pathconf
= pathconf
,
2913 struct rpc_message msg
= {
2914 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_PATHCONF
],
2919 /* None of the pathconf attributes are mandatory to implement */
2920 if ((args
.bitmask
[0] & nfs4_pathconf_bitmap
[0]) == 0) {
2921 memset(pathconf
, 0, sizeof(*pathconf
));
2925 nfs_fattr_init(pathconf
->fattr
);
2926 return nfs4_call_sync(server
, &msg
, &args
, &res
, 0);
2929 static int nfs4_proc_pathconf(struct nfs_server
*server
, struct nfs_fh
*fhandle
,
2930 struct nfs_pathconf
*pathconf
)
2932 struct nfs4_exception exception
= { };
2936 err
= nfs4_handle_exception(server
,
2937 _nfs4_proc_pathconf(server
, fhandle
, pathconf
),
2939 } while (exception
.retry
);
2943 static int nfs4_read_done(struct rpc_task
*task
, struct nfs_read_data
*data
)
2945 struct nfs_server
*server
= NFS_SERVER(data
->inode
);
2947 dprintk("--> %s\n", __func__
);
2949 /* nfs4_sequence_free_slot called in the read rpc_call_done */
2950 nfs4_sequence_done(server
, &data
->res
.seq_res
, task
->tk_status
);
2952 if (nfs4_async_handle_error(task
, server
, data
->args
.context
->state
) == -EAGAIN
) {
2953 nfs4_restart_rpc(task
, server
->nfs_client
);
2957 nfs_invalidate_atime(data
->inode
);
2958 if (task
->tk_status
> 0)
2959 renew_lease(server
, data
->timestamp
);
2963 static void nfs4_proc_read_setup(struct nfs_read_data
*data
, struct rpc_message
*msg
)
2965 data
->timestamp
= jiffies
;
2966 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_READ
];
2969 static int nfs4_write_done(struct rpc_task
*task
, struct nfs_write_data
*data
)
2971 struct inode
*inode
= data
->inode
;
2973 /* slot is freed in nfs_writeback_done */
2974 nfs4_sequence_done(NFS_SERVER(inode
), &data
->res
.seq_res
,
2977 if (nfs4_async_handle_error(task
, NFS_SERVER(inode
), data
->args
.context
->state
) == -EAGAIN
) {
2978 nfs4_restart_rpc(task
, NFS_SERVER(inode
)->nfs_client
);
2981 if (task
->tk_status
>= 0) {
2982 renew_lease(NFS_SERVER(inode
), data
->timestamp
);
2983 nfs_post_op_update_inode_force_wcc(inode
, data
->res
.fattr
);
2988 static void nfs4_proc_write_setup(struct nfs_write_data
*data
, struct rpc_message
*msg
)
2990 struct nfs_server
*server
= NFS_SERVER(data
->inode
);
2992 data
->args
.bitmask
= server
->cache_consistency_bitmask
;
2993 data
->res
.server
= server
;
2994 data
->timestamp
= jiffies
;
2996 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_WRITE
];
2999 static int nfs4_commit_done(struct rpc_task
*task
, struct nfs_write_data
*data
)
3001 struct inode
*inode
= data
->inode
;
3003 nfs4_sequence_done(NFS_SERVER(inode
), &data
->res
.seq_res
,
3005 if (nfs4_async_handle_error(task
, NFS_SERVER(inode
), NULL
) == -EAGAIN
) {
3006 nfs4_restart_rpc(task
, NFS_SERVER(inode
)->nfs_client
);
3009 nfs4_sequence_free_slot(NFS_SERVER(inode
)->nfs_client
,
3010 &data
->res
.seq_res
);
3011 nfs_refresh_inode(inode
, data
->res
.fattr
);
3015 static void nfs4_proc_commit_setup(struct nfs_write_data
*data
, struct rpc_message
*msg
)
3017 struct nfs_server
*server
= NFS_SERVER(data
->inode
);
3019 data
->args
.bitmask
= server
->cache_consistency_bitmask
;
3020 data
->res
.server
= server
;
3021 msg
->rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_COMMIT
];
3025 * nfs4_proc_async_renew(): This is not one of the nfs_rpc_ops; it is a special
3026 * standalone procedure for queueing an asynchronous RENEW.
3028 static void nfs4_renew_done(struct rpc_task
*task
, void *data
)
3030 struct nfs_client
*clp
= (struct nfs_client
*)task
->tk_msg
.rpc_argp
;
3031 unsigned long timestamp
= (unsigned long)data
;
3033 if (task
->tk_status
< 0) {
3034 /* Unless we're shutting down, schedule state recovery! */
3035 if (test_bit(NFS_CS_RENEWD
, &clp
->cl_res_state
) != 0)
3036 nfs4_schedule_state_recovery(clp
);
3039 spin_lock(&clp
->cl_lock
);
3040 if (time_before(clp
->cl_last_renewal
,timestamp
))
3041 clp
->cl_last_renewal
= timestamp
;
3042 spin_unlock(&clp
->cl_lock
);
3043 dprintk("%s calling put_rpccred on rpc_cred %p\n", __func__
,
3044 task
->tk_msg
.rpc_cred
);
3045 put_rpccred(task
->tk_msg
.rpc_cred
);
3048 static const struct rpc_call_ops nfs4_renew_ops
= {
3049 .rpc_call_done
= nfs4_renew_done
,
3052 int nfs4_proc_async_renew(struct nfs_client
*clp
, struct rpc_cred
*cred
)
3054 struct rpc_message msg
= {
3055 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENEW
],
3060 return rpc_call_async(clp
->cl_rpcclient
, &msg
, RPC_TASK_SOFT
,
3061 &nfs4_renew_ops
, (void *)jiffies
);
3064 int nfs4_proc_renew(struct nfs_client
*clp
, struct rpc_cred
*cred
)
3066 struct rpc_message msg
= {
3067 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_RENEW
],
3071 unsigned long now
= jiffies
;
3074 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, 0);
3077 spin_lock(&clp
->cl_lock
);
3078 if (time_before(clp
->cl_last_renewal
,now
))
3079 clp
->cl_last_renewal
= now
;
3080 spin_unlock(&clp
->cl_lock
);
3084 static inline int nfs4_server_supports_acls(struct nfs_server
*server
)
3086 return (server
->caps
& NFS_CAP_ACLS
)
3087 && (server
->acl_bitmask
& ACL4_SUPPORT_ALLOW_ACL
)
3088 && (server
->acl_bitmask
& ACL4_SUPPORT_DENY_ACL
);
3091 /* Assuming that XATTR_SIZE_MAX is a multiple of PAGE_CACHE_SIZE, and that
3092 * it's OK to put sizeof(void) * (XATTR_SIZE_MAX/PAGE_CACHE_SIZE) bytes on
3095 #define NFS4ACL_MAXPAGES (XATTR_SIZE_MAX >> PAGE_CACHE_SHIFT)
3097 static void buf_to_pages(const void *buf
, size_t buflen
,
3098 struct page
**pages
, unsigned int *pgbase
)
3100 const void *p
= buf
;
3102 *pgbase
= offset_in_page(buf
);
3104 while (p
< buf
+ buflen
) {
3105 *(pages
++) = virt_to_page(p
);
3106 p
+= PAGE_CACHE_SIZE
;
3110 struct nfs4_cached_acl
{
3116 static void nfs4_set_cached_acl(struct inode
*inode
, struct nfs4_cached_acl
*acl
)
3118 struct nfs_inode
*nfsi
= NFS_I(inode
);
3120 spin_lock(&inode
->i_lock
);
3121 kfree(nfsi
->nfs4_acl
);
3122 nfsi
->nfs4_acl
= acl
;
3123 spin_unlock(&inode
->i_lock
);
3126 static void nfs4_zap_acl_attr(struct inode
*inode
)
3128 nfs4_set_cached_acl(inode
, NULL
);
3131 static inline ssize_t
nfs4_read_cached_acl(struct inode
*inode
, char *buf
, size_t buflen
)
3133 struct nfs_inode
*nfsi
= NFS_I(inode
);
3134 struct nfs4_cached_acl
*acl
;
3137 spin_lock(&inode
->i_lock
);
3138 acl
= nfsi
->nfs4_acl
;
3141 if (buf
== NULL
) /* user is just asking for length */
3143 if (acl
->cached
== 0)
3145 ret
= -ERANGE
; /* see getxattr(2) man page */
3146 if (acl
->len
> buflen
)
3148 memcpy(buf
, acl
->data
, acl
->len
);
3152 spin_unlock(&inode
->i_lock
);
3156 static void nfs4_write_cached_acl(struct inode
*inode
, const char *buf
, size_t acl_len
)
3158 struct nfs4_cached_acl
*acl
;
3160 if (buf
&& acl_len
<= PAGE_SIZE
) {
3161 acl
= kmalloc(sizeof(*acl
) + acl_len
, GFP_KERNEL
);
3165 memcpy(acl
->data
, buf
, acl_len
);
3167 acl
= kmalloc(sizeof(*acl
), GFP_KERNEL
);
3174 nfs4_set_cached_acl(inode
, acl
);
3177 static ssize_t
__nfs4_get_acl_uncached(struct inode
*inode
, void *buf
, size_t buflen
)
3179 struct page
*pages
[NFS4ACL_MAXPAGES
];
3180 struct nfs_getaclargs args
= {
3181 .fh
= NFS_FH(inode
),
3185 struct nfs_getaclres res
= {
3189 struct rpc_message msg
= {
3190 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GETACL
],
3194 struct page
*localpage
= NULL
;
3197 if (buflen
< PAGE_SIZE
) {
3198 /* As long as we're doing a round trip to the server anyway,
3199 * let's be prepared for a page of acl data. */
3200 localpage
= alloc_page(GFP_KERNEL
);
3201 resp_buf
= page_address(localpage
);
3202 if (localpage
== NULL
)
3204 args
.acl_pages
[0] = localpage
;
3205 args
.acl_pgbase
= 0;
3206 args
.acl_len
= PAGE_SIZE
;
3209 buf_to_pages(buf
, buflen
, args
.acl_pages
, &args
.acl_pgbase
);
3211 ret
= nfs4_call_sync(NFS_SERVER(inode
), &msg
, &args
, &res
, 0);
3214 if (res
.acl_len
> args
.acl_len
)
3215 nfs4_write_cached_acl(inode
, NULL
, res
.acl_len
);
3217 nfs4_write_cached_acl(inode
, resp_buf
, res
.acl_len
);
3220 if (res
.acl_len
> buflen
)
3223 memcpy(buf
, resp_buf
, res
.acl_len
);
3228 __free_page(localpage
);
3232 static ssize_t
nfs4_get_acl_uncached(struct inode
*inode
, void *buf
, size_t buflen
)
3234 struct nfs4_exception exception
= { };
3237 ret
= __nfs4_get_acl_uncached(inode
, buf
, buflen
);
3240 ret
= nfs4_handle_exception(NFS_SERVER(inode
), ret
, &exception
);
3241 } while (exception
.retry
);
3245 static ssize_t
nfs4_proc_get_acl(struct inode
*inode
, void *buf
, size_t buflen
)
3247 struct nfs_server
*server
= NFS_SERVER(inode
);
3250 if (!nfs4_server_supports_acls(server
))
3252 ret
= nfs_revalidate_inode(server
, inode
);
3255 ret
= nfs4_read_cached_acl(inode
, buf
, buflen
);
3258 return nfs4_get_acl_uncached(inode
, buf
, buflen
);
3261 static int __nfs4_proc_set_acl(struct inode
*inode
, const void *buf
, size_t buflen
)
3263 struct nfs_server
*server
= NFS_SERVER(inode
);
3264 struct page
*pages
[NFS4ACL_MAXPAGES
];
3265 struct nfs_setaclargs arg
= {
3266 .fh
= NFS_FH(inode
),
3270 struct nfs_setaclres res
;
3271 struct rpc_message msg
= {
3272 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETACL
],
3278 if (!nfs4_server_supports_acls(server
))
3280 nfs_inode_return_delegation(inode
);
3281 buf_to_pages(buf
, buflen
, arg
.acl_pages
, &arg
.acl_pgbase
);
3282 ret
= nfs4_call_sync(server
, &msg
, &arg
, &res
, 1);
3283 nfs_access_zap_cache(inode
);
3284 nfs_zap_acl_cache(inode
);
3288 static int nfs4_proc_set_acl(struct inode
*inode
, const void *buf
, size_t buflen
)
3290 struct nfs4_exception exception
= { };
3293 err
= nfs4_handle_exception(NFS_SERVER(inode
),
3294 __nfs4_proc_set_acl(inode
, buf
, buflen
),
3296 } while (exception
.retry
);
3301 _nfs4_async_handle_error(struct rpc_task
*task
, const struct nfs_server
*server
, struct nfs_client
*clp
, struct nfs4_state
*state
)
3303 if (!clp
|| task
->tk_status
>= 0)
3305 switch(task
->tk_status
) {
3306 case -NFS4ERR_ADMIN_REVOKED
:
3307 case -NFS4ERR_BAD_STATEID
:
3308 case -NFS4ERR_OPENMODE
:
3311 nfs4_state_mark_reclaim_nograce(clp
, state
);
3312 case -NFS4ERR_STALE_CLIENTID
:
3313 case -NFS4ERR_STALE_STATEID
:
3314 case -NFS4ERR_EXPIRED
:
3315 rpc_sleep_on(&clp
->cl_rpcwaitq
, task
, NULL
);
3316 nfs4_schedule_state_recovery(clp
);
3317 if (test_bit(NFS4CLNT_MANAGER_RUNNING
, &clp
->cl_state
) == 0)
3318 rpc_wake_up_queued_task(&clp
->cl_rpcwaitq
, task
);
3319 task
->tk_status
= 0;
3321 #if defined(CONFIG_NFS_V4_1)
3322 case -NFS4ERR_BADSESSION
:
3323 case -NFS4ERR_BADSLOT
:
3324 case -NFS4ERR_BAD_HIGH_SLOT
:
3325 case -NFS4ERR_DEADSESSION
:
3326 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION
:
3327 case -NFS4ERR_SEQ_FALSE_RETRY
:
3328 case -NFS4ERR_SEQ_MISORDERED
:
3329 dprintk("%s ERROR %d, Reset session\n", __func__
,
3331 set_bit(NFS4CLNT_SESSION_SETUP
, &clp
->cl_state
);
3332 task
->tk_status
= 0;
3334 #endif /* CONFIG_NFS_V4_1 */
3335 case -NFS4ERR_DELAY
:
3337 nfs_inc_server_stats(server
, NFSIOS_DELAY
);
3338 case -NFS4ERR_GRACE
:
3339 rpc_delay(task
, NFS4_POLL_RETRY_MAX
);
3340 task
->tk_status
= 0;
3342 case -NFS4ERR_OLD_STATEID
:
3343 task
->tk_status
= 0;
3346 task
->tk_status
= nfs4_map_errors(task
->tk_status
);
3351 nfs4_async_handle_error(struct rpc_task
*task
, const struct nfs_server
*server
, struct nfs4_state
*state
)
3353 return _nfs4_async_handle_error(task
, server
, server
->nfs_client
, state
);
3356 int nfs4_proc_setclientid(struct nfs_client
*clp
, u32 program
, unsigned short port
, struct rpc_cred
*cred
)
3358 nfs4_verifier sc_verifier
;
3359 struct nfs4_setclientid setclientid
= {
3360 .sc_verifier
= &sc_verifier
,
3363 struct rpc_message msg
= {
3364 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETCLIENTID
],
3365 .rpc_argp
= &setclientid
,
3373 p
= (__be32
*)sc_verifier
.data
;
3374 *p
++ = htonl((u32
)clp
->cl_boot_time
.tv_sec
);
3375 *p
= htonl((u32
)clp
->cl_boot_time
.tv_nsec
);
3378 setclientid
.sc_name_len
= scnprintf(setclientid
.sc_name
,
3379 sizeof(setclientid
.sc_name
), "%s/%s %s %s %u",
3381 rpc_peeraddr2str(clp
->cl_rpcclient
,
3383 rpc_peeraddr2str(clp
->cl_rpcclient
,
3385 clp
->cl_rpcclient
->cl_auth
->au_ops
->au_name
,
3386 clp
->cl_id_uniquifier
);
3387 setclientid
.sc_netid_len
= scnprintf(setclientid
.sc_netid
,
3388 sizeof(setclientid
.sc_netid
),
3389 rpc_peeraddr2str(clp
->cl_rpcclient
,
3390 RPC_DISPLAY_NETID
));
3391 setclientid
.sc_uaddr_len
= scnprintf(setclientid
.sc_uaddr
,
3392 sizeof(setclientid
.sc_uaddr
), "%s.%u.%u",
3393 clp
->cl_ipaddr
, port
>> 8, port
& 255);
3395 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, 0);
3396 if (status
!= -NFS4ERR_CLID_INUSE
)
3401 ssleep(clp
->cl_lease_time
+ 1);
3403 if (++clp
->cl_id_uniquifier
== 0)
3409 static int _nfs4_proc_setclientid_confirm(struct nfs_client
*clp
, struct rpc_cred
*cred
)
3411 struct nfs_fsinfo fsinfo
;
3412 struct rpc_message msg
= {
3413 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SETCLIENTID_CONFIRM
],
3415 .rpc_resp
= &fsinfo
,
3422 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, 0);
3424 spin_lock(&clp
->cl_lock
);
3425 clp
->cl_lease_time
= fsinfo
.lease_time
* HZ
;
3426 clp
->cl_last_renewal
= now
;
3427 spin_unlock(&clp
->cl_lock
);
3432 int nfs4_proc_setclientid_confirm(struct nfs_client
*clp
, struct rpc_cred
*cred
)
3437 err
= _nfs4_proc_setclientid_confirm(clp
, cred
);
3441 case -NFS4ERR_RESOURCE
:
3442 /* The IBM lawyers misread another document! */
3443 case -NFS4ERR_DELAY
:
3444 err
= nfs4_delay(clp
->cl_rpcclient
, &timeout
);
3450 struct nfs4_delegreturndata
{
3451 struct nfs4_delegreturnargs args
;
3452 struct nfs4_delegreturnres res
;
3454 nfs4_stateid stateid
;
3455 unsigned long timestamp
;
3456 struct nfs_fattr fattr
;
3460 static void nfs4_delegreturn_done(struct rpc_task
*task
, void *calldata
)
3462 struct nfs4_delegreturndata
*data
= calldata
;
3464 nfs4_sequence_done_free_slot(data
->res
.server
, &data
->res
.seq_res
,
3467 data
->rpc_status
= task
->tk_status
;
3468 if (data
->rpc_status
== 0)
3469 renew_lease(data
->res
.server
, data
->timestamp
);
3472 static void nfs4_delegreturn_release(void *calldata
)
3477 #if defined(CONFIG_NFS_V4_1)
3478 static void nfs4_delegreturn_prepare(struct rpc_task
*task
, void *data
)
3480 struct nfs4_delegreturndata
*d_data
;
3482 d_data
= (struct nfs4_delegreturndata
*)data
;
3484 if (nfs4_setup_sequence(d_data
->res
.server
->nfs_client
,
3485 &d_data
->args
.seq_args
,
3486 &d_data
->res
.seq_res
, 1, task
))
3488 rpc_call_start(task
);
3490 #endif /* CONFIG_NFS_V4_1 */
3492 static const struct rpc_call_ops nfs4_delegreturn_ops
= {
3493 #if defined(CONFIG_NFS_V4_1)
3494 .rpc_call_prepare
= nfs4_delegreturn_prepare
,
3495 #endif /* CONFIG_NFS_V4_1 */
3496 .rpc_call_done
= nfs4_delegreturn_done
,
3497 .rpc_release
= nfs4_delegreturn_release
,
3500 static int _nfs4_proc_delegreturn(struct inode
*inode
, struct rpc_cred
*cred
, const nfs4_stateid
*stateid
, int issync
)
3502 struct nfs4_delegreturndata
*data
;
3503 struct nfs_server
*server
= NFS_SERVER(inode
);
3504 struct rpc_task
*task
;
3505 struct rpc_message msg
= {
3506 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DELEGRETURN
],
3509 struct rpc_task_setup task_setup_data
= {
3510 .rpc_client
= server
->client
,
3511 .rpc_message
= &msg
,
3512 .callback_ops
= &nfs4_delegreturn_ops
,
3513 .flags
= RPC_TASK_ASYNC
,
3517 data
= kzalloc(sizeof(*data
), GFP_KERNEL
);
3520 data
->args
.fhandle
= &data
->fh
;
3521 data
->args
.stateid
= &data
->stateid
;
3522 data
->args
.bitmask
= server
->attr_bitmask
;
3523 nfs_copy_fh(&data
->fh
, NFS_FH(inode
));
3524 memcpy(&data
->stateid
, stateid
, sizeof(data
->stateid
));
3525 data
->res
.fattr
= &data
->fattr
;
3526 data
->res
.server
= server
;
3527 data
->res
.seq_res
.sr_slotid
= NFS4_MAX_SLOT_TABLE
;
3528 nfs_fattr_init(data
->res
.fattr
);
3529 data
->timestamp
= jiffies
;
3530 data
->rpc_status
= 0;
3532 task_setup_data
.callback_data
= data
;
3533 msg
.rpc_argp
= &data
->args
,
3534 msg
.rpc_resp
= &data
->res
,
3535 task
= rpc_run_task(&task_setup_data
);
3537 return PTR_ERR(task
);
3540 status
= nfs4_wait_for_completion_rpc_task(task
);
3543 status
= data
->rpc_status
;
3546 nfs_refresh_inode(inode
, &data
->fattr
);
3552 int nfs4_proc_delegreturn(struct inode
*inode
, struct rpc_cred
*cred
, const nfs4_stateid
*stateid
, int issync
)
3554 struct nfs_server
*server
= NFS_SERVER(inode
);
3555 struct nfs4_exception exception
= { };
3558 err
= _nfs4_proc_delegreturn(inode
, cred
, stateid
, issync
);
3560 case -NFS4ERR_STALE_STATEID
:
3561 case -NFS4ERR_EXPIRED
:
3565 err
= nfs4_handle_exception(server
, err
, &exception
);
3566 } while (exception
.retry
);
3570 #define NFS4_LOCK_MINTIMEOUT (1 * HZ)
3571 #define NFS4_LOCK_MAXTIMEOUT (30 * HZ)
3574 * sleep, with exponential backoff, and retry the LOCK operation.
3576 static unsigned long
3577 nfs4_set_lock_task_retry(unsigned long timeout
)
3579 schedule_timeout_killable(timeout
);
3581 if (timeout
> NFS4_LOCK_MAXTIMEOUT
)
3582 return NFS4_LOCK_MAXTIMEOUT
;
3586 static int _nfs4_proc_getlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
3588 struct inode
*inode
= state
->inode
;
3589 struct nfs_server
*server
= NFS_SERVER(inode
);
3590 struct nfs_client
*clp
= server
->nfs_client
;
3591 struct nfs_lockt_args arg
= {
3592 .fh
= NFS_FH(inode
),
3595 struct nfs_lockt_res res
= {
3598 struct rpc_message msg
= {
3599 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCKT
],
3602 .rpc_cred
= state
->owner
->so_cred
,
3604 struct nfs4_lock_state
*lsp
;
3607 arg
.lock_owner
.clientid
= clp
->cl_clientid
;
3608 status
= nfs4_set_lock_state(state
, request
);
3611 lsp
= request
->fl_u
.nfs4_fl
.owner
;
3612 arg
.lock_owner
.id
= lsp
->ls_id
.id
;
3613 status
= nfs4_call_sync(server
, &msg
, &arg
, &res
, 1);
3616 request
->fl_type
= F_UNLCK
;
3618 case -NFS4ERR_DENIED
:
3621 request
->fl_ops
->fl_release_private(request
);
3626 static int nfs4_proc_getlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
3628 struct nfs4_exception exception
= { };
3632 err
= nfs4_handle_exception(NFS_SERVER(state
->inode
),
3633 _nfs4_proc_getlk(state
, cmd
, request
),
3635 } while (exception
.retry
);
3639 static int do_vfs_lock(struct file
*file
, struct file_lock
*fl
)
3642 switch (fl
->fl_flags
& (FL_POSIX
|FL_FLOCK
)) {
3644 res
= posix_lock_file_wait(file
, fl
);
3647 res
= flock_lock_file_wait(file
, fl
);
3655 struct nfs4_unlockdata
{
3656 struct nfs_locku_args arg
;
3657 struct nfs_locku_res res
;
3658 struct nfs4_lock_state
*lsp
;
3659 struct nfs_open_context
*ctx
;
3660 struct file_lock fl
;
3661 const struct nfs_server
*server
;
3662 unsigned long timestamp
;
3665 static struct nfs4_unlockdata
*nfs4_alloc_unlockdata(struct file_lock
*fl
,
3666 struct nfs_open_context
*ctx
,
3667 struct nfs4_lock_state
*lsp
,
3668 struct nfs_seqid
*seqid
)
3670 struct nfs4_unlockdata
*p
;
3671 struct inode
*inode
= lsp
->ls_state
->inode
;
3673 p
= kzalloc(sizeof(*p
), GFP_KERNEL
);
3676 p
->arg
.fh
= NFS_FH(inode
);
3678 p
->arg
.seqid
= seqid
;
3679 p
->res
.seqid
= seqid
;
3680 p
->res
.seq_res
.sr_slotid
= NFS4_MAX_SLOT_TABLE
;
3681 p
->arg
.stateid
= &lsp
->ls_stateid
;
3683 atomic_inc(&lsp
->ls_count
);
3684 /* Ensure we don't close file until we're done freeing locks! */
3685 p
->ctx
= get_nfs_open_context(ctx
);
3686 memcpy(&p
->fl
, fl
, sizeof(p
->fl
));
3687 p
->server
= NFS_SERVER(inode
);
3691 static void nfs4_locku_release_calldata(void *data
)
3693 struct nfs4_unlockdata
*calldata
= data
;
3694 nfs_free_seqid(calldata
->arg
.seqid
);
3695 nfs4_put_lock_state(calldata
->lsp
);
3696 put_nfs_open_context(calldata
->ctx
);
3700 static void nfs4_locku_done(struct rpc_task
*task
, void *data
)
3702 struct nfs4_unlockdata
*calldata
= data
;
3704 nfs4_sequence_done(calldata
->server
, &calldata
->res
.seq_res
,
3706 if (RPC_ASSASSINATED(task
))
3708 switch (task
->tk_status
) {
3710 memcpy(calldata
->lsp
->ls_stateid
.data
,
3711 calldata
->res
.stateid
.data
,
3712 sizeof(calldata
->lsp
->ls_stateid
.data
));
3713 renew_lease(calldata
->server
, calldata
->timestamp
);
3715 case -NFS4ERR_BAD_STATEID
:
3716 case -NFS4ERR_OLD_STATEID
:
3717 case -NFS4ERR_STALE_STATEID
:
3718 case -NFS4ERR_EXPIRED
:
3721 if (nfs4_async_handle_error(task
, calldata
->server
, NULL
) == -EAGAIN
)
3722 nfs4_restart_rpc(task
,
3723 calldata
->server
->nfs_client
);
3725 nfs4_sequence_free_slot(calldata
->server
->nfs_client
,
3726 &calldata
->res
.seq_res
);
3729 static void nfs4_locku_prepare(struct rpc_task
*task
, void *data
)
3731 struct nfs4_unlockdata
*calldata
= data
;
3733 if (nfs_wait_on_sequence(calldata
->arg
.seqid
, task
) != 0)
3735 if ((calldata
->lsp
->ls_flags
& NFS_LOCK_INITIALIZED
) == 0) {
3736 /* Note: exit _without_ running nfs4_locku_done */
3737 task
->tk_action
= NULL
;
3740 calldata
->timestamp
= jiffies
;
3741 if (nfs4_setup_sequence(calldata
->server
->nfs_client
,
3742 &calldata
->arg
.seq_args
,
3743 &calldata
->res
.seq_res
, 1, task
))
3745 rpc_call_start(task
);
3748 static const struct rpc_call_ops nfs4_locku_ops
= {
3749 .rpc_call_prepare
= nfs4_locku_prepare
,
3750 .rpc_call_done
= nfs4_locku_done
,
3751 .rpc_release
= nfs4_locku_release_calldata
,
3754 static struct rpc_task
*nfs4_do_unlck(struct file_lock
*fl
,
3755 struct nfs_open_context
*ctx
,
3756 struct nfs4_lock_state
*lsp
,
3757 struct nfs_seqid
*seqid
)
3759 struct nfs4_unlockdata
*data
;
3760 struct rpc_message msg
= {
3761 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCKU
],
3762 .rpc_cred
= ctx
->cred
,
3764 struct rpc_task_setup task_setup_data
= {
3765 .rpc_client
= NFS_CLIENT(lsp
->ls_state
->inode
),
3766 .rpc_message
= &msg
,
3767 .callback_ops
= &nfs4_locku_ops
,
3768 .workqueue
= nfsiod_workqueue
,
3769 .flags
= RPC_TASK_ASYNC
,
3772 /* Ensure this is an unlock - when canceling a lock, the
3773 * canceled lock is passed in, and it won't be an unlock.
3775 fl
->fl_type
= F_UNLCK
;
3777 data
= nfs4_alloc_unlockdata(fl
, ctx
, lsp
, seqid
);
3779 nfs_free_seqid(seqid
);
3780 return ERR_PTR(-ENOMEM
);
3783 msg
.rpc_argp
= &data
->arg
,
3784 msg
.rpc_resp
= &data
->res
,
3785 task_setup_data
.callback_data
= data
;
3786 return rpc_run_task(&task_setup_data
);
3789 static int nfs4_proc_unlck(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
3791 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
3792 struct nfs_seqid
*seqid
;
3793 struct nfs4_lock_state
*lsp
;
3794 struct rpc_task
*task
;
3796 unsigned char fl_flags
= request
->fl_flags
;
3798 status
= nfs4_set_lock_state(state
, request
);
3799 /* Unlock _before_ we do the RPC call */
3800 request
->fl_flags
|= FL_EXISTS
;
3801 down_read(&nfsi
->rwsem
);
3802 if (do_vfs_lock(request
->fl_file
, request
) == -ENOENT
) {
3803 up_read(&nfsi
->rwsem
);
3806 up_read(&nfsi
->rwsem
);
3809 /* Is this a delegated lock? */
3810 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
))
3812 lsp
= request
->fl_u
.nfs4_fl
.owner
;
3813 seqid
= nfs_alloc_seqid(&lsp
->ls_seqid
);
3817 task
= nfs4_do_unlck(request
, nfs_file_open_context(request
->fl_file
), lsp
, seqid
);
3818 status
= PTR_ERR(task
);
3821 status
= nfs4_wait_for_completion_rpc_task(task
);
3824 request
->fl_flags
= fl_flags
;
3828 struct nfs4_lockdata
{
3829 struct nfs_lock_args arg
;
3830 struct nfs_lock_res res
;
3831 struct nfs4_lock_state
*lsp
;
3832 struct nfs_open_context
*ctx
;
3833 struct file_lock fl
;
3834 unsigned long timestamp
;
3837 struct nfs_server
*server
;
3840 static struct nfs4_lockdata
*nfs4_alloc_lockdata(struct file_lock
*fl
,
3841 struct nfs_open_context
*ctx
, struct nfs4_lock_state
*lsp
)
3843 struct nfs4_lockdata
*p
;
3844 struct inode
*inode
= lsp
->ls_state
->inode
;
3845 struct nfs_server
*server
= NFS_SERVER(inode
);
3847 p
= kzalloc(sizeof(*p
), GFP_KERNEL
);
3851 p
->arg
.fh
= NFS_FH(inode
);
3853 p
->arg
.open_seqid
= nfs_alloc_seqid(&lsp
->ls_state
->owner
->so_seqid
);
3854 if (p
->arg
.open_seqid
== NULL
)
3856 p
->arg
.lock_seqid
= nfs_alloc_seqid(&lsp
->ls_seqid
);
3857 if (p
->arg
.lock_seqid
== NULL
)
3858 goto out_free_seqid
;
3859 p
->arg
.lock_stateid
= &lsp
->ls_stateid
;
3860 p
->arg
.lock_owner
.clientid
= server
->nfs_client
->cl_clientid
;
3861 p
->arg
.lock_owner
.id
= lsp
->ls_id
.id
;
3862 p
->res
.lock_seqid
= p
->arg
.lock_seqid
;
3863 p
->res
.seq_res
.sr_slotid
= NFS4_MAX_SLOT_TABLE
;
3866 atomic_inc(&lsp
->ls_count
);
3867 p
->ctx
= get_nfs_open_context(ctx
);
3868 memcpy(&p
->fl
, fl
, sizeof(p
->fl
));
3871 nfs_free_seqid(p
->arg
.open_seqid
);
3877 static void nfs4_lock_prepare(struct rpc_task
*task
, void *calldata
)
3879 struct nfs4_lockdata
*data
= calldata
;
3880 struct nfs4_state
*state
= data
->lsp
->ls_state
;
3882 dprintk("%s: begin!\n", __func__
);
3883 if (nfs_wait_on_sequence(data
->arg
.lock_seqid
, task
) != 0)
3885 /* Do we need to do an open_to_lock_owner? */
3886 if (!(data
->arg
.lock_seqid
->sequence
->flags
& NFS_SEQID_CONFIRMED
)) {
3887 if (nfs_wait_on_sequence(data
->arg
.open_seqid
, task
) != 0)
3889 data
->arg
.open_stateid
= &state
->stateid
;
3890 data
->arg
.new_lock_owner
= 1;
3891 data
->res
.open_seqid
= data
->arg
.open_seqid
;
3893 data
->arg
.new_lock_owner
= 0;
3894 data
->timestamp
= jiffies
;
3895 if (nfs4_setup_sequence(data
->server
->nfs_client
, &data
->arg
.seq_args
,
3896 &data
->res
.seq_res
, 1, task
))
3898 rpc_call_start(task
);
3899 dprintk("%s: done!, ret = %d\n", __func__
, data
->rpc_status
);
3902 static void nfs4_lock_done(struct rpc_task
*task
, void *calldata
)
3904 struct nfs4_lockdata
*data
= calldata
;
3906 dprintk("%s: begin!\n", __func__
);
3908 nfs4_sequence_done_free_slot(data
->server
, &data
->res
.seq_res
,
3911 data
->rpc_status
= task
->tk_status
;
3912 if (RPC_ASSASSINATED(task
))
3914 if (data
->arg
.new_lock_owner
!= 0) {
3915 if (data
->rpc_status
== 0)
3916 nfs_confirm_seqid(&data
->lsp
->ls_seqid
, 0);
3920 if (data
->rpc_status
== 0) {
3921 memcpy(data
->lsp
->ls_stateid
.data
, data
->res
.stateid
.data
,
3922 sizeof(data
->lsp
->ls_stateid
.data
));
3923 data
->lsp
->ls_flags
|= NFS_LOCK_INITIALIZED
;
3924 renew_lease(NFS_SERVER(data
->ctx
->path
.dentry
->d_inode
), data
->timestamp
);
3927 dprintk("%s: done, ret = %d!\n", __func__
, data
->rpc_status
);
3930 static void nfs4_lock_release(void *calldata
)
3932 struct nfs4_lockdata
*data
= calldata
;
3934 dprintk("%s: begin!\n", __func__
);
3935 nfs_free_seqid(data
->arg
.open_seqid
);
3936 if (data
->cancelled
!= 0) {
3937 struct rpc_task
*task
;
3938 task
= nfs4_do_unlck(&data
->fl
, data
->ctx
, data
->lsp
,
3939 data
->arg
.lock_seqid
);
3942 dprintk("%s: cancelling lock!\n", __func__
);
3944 nfs_free_seqid(data
->arg
.lock_seqid
);
3945 nfs4_put_lock_state(data
->lsp
);
3946 put_nfs_open_context(data
->ctx
);
3948 dprintk("%s: done!\n", __func__
);
3951 static const struct rpc_call_ops nfs4_lock_ops
= {
3952 .rpc_call_prepare
= nfs4_lock_prepare
,
3953 .rpc_call_done
= nfs4_lock_done
,
3954 .rpc_release
= nfs4_lock_release
,
3957 static int _nfs4_do_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*fl
, int reclaim
)
3959 struct nfs4_lockdata
*data
;
3960 struct rpc_task
*task
;
3961 struct rpc_message msg
= {
3962 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_LOCK
],
3963 .rpc_cred
= state
->owner
->so_cred
,
3965 struct rpc_task_setup task_setup_data
= {
3966 .rpc_client
= NFS_CLIENT(state
->inode
),
3967 .rpc_message
= &msg
,
3968 .callback_ops
= &nfs4_lock_ops
,
3969 .workqueue
= nfsiod_workqueue
,
3970 .flags
= RPC_TASK_ASYNC
,
3974 dprintk("%s: begin!\n", __func__
);
3975 data
= nfs4_alloc_lockdata(fl
, nfs_file_open_context(fl
->fl_file
),
3976 fl
->fl_u
.nfs4_fl
.owner
);
3980 data
->arg
.block
= 1;
3982 data
->arg
.reclaim
= 1;
3983 msg
.rpc_argp
= &data
->arg
,
3984 msg
.rpc_resp
= &data
->res
,
3985 task_setup_data
.callback_data
= data
;
3986 task
= rpc_run_task(&task_setup_data
);
3988 return PTR_ERR(task
);
3989 ret
= nfs4_wait_for_completion_rpc_task(task
);
3991 ret
= data
->rpc_status
;
3993 data
->cancelled
= 1;
3995 dprintk("%s: done, ret = %d!\n", __func__
, ret
);
3999 static int nfs4_lock_reclaim(struct nfs4_state
*state
, struct file_lock
*request
)
4001 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
4002 struct nfs4_exception exception
= { };
4006 /* Cache the lock if possible... */
4007 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) != 0)
4009 err
= _nfs4_do_setlk(state
, F_SETLK
, request
, 1);
4010 if (err
!= -NFS4ERR_DELAY
)
4012 nfs4_handle_exception(server
, err
, &exception
);
4013 } while (exception
.retry
);
4017 static int nfs4_lock_expired(struct nfs4_state
*state
, struct file_lock
*request
)
4019 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
4020 struct nfs4_exception exception
= { };
4023 err
= nfs4_set_lock_state(state
, request
);
4027 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
) != 0)
4029 err
= _nfs4_do_setlk(state
, F_SETLK
, request
, 0);
4030 if (err
!= -NFS4ERR_DELAY
)
4032 nfs4_handle_exception(server
, err
, &exception
);
4033 } while (exception
.retry
);
4037 static int _nfs4_proc_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
4039 struct nfs_inode
*nfsi
= NFS_I(state
->inode
);
4040 unsigned char fl_flags
= request
->fl_flags
;
4043 /* Is this a delegated open? */
4044 status
= nfs4_set_lock_state(state
, request
);
4047 request
->fl_flags
|= FL_ACCESS
;
4048 status
= do_vfs_lock(request
->fl_file
, request
);
4051 down_read(&nfsi
->rwsem
);
4052 if (test_bit(NFS_DELEGATED_STATE
, &state
->flags
)) {
4053 /* Yes: cache locks! */
4054 /* ...but avoid races with delegation recall... */
4055 request
->fl_flags
= fl_flags
& ~FL_SLEEP
;
4056 status
= do_vfs_lock(request
->fl_file
, request
);
4059 status
= _nfs4_do_setlk(state
, cmd
, request
, 0);
4062 /* Note: we always want to sleep here! */
4063 request
->fl_flags
= fl_flags
| FL_SLEEP
;
4064 if (do_vfs_lock(request
->fl_file
, request
) < 0)
4065 printk(KERN_WARNING
"%s: VFS is out of sync with lock manager!\n", __func__
);
4067 up_read(&nfsi
->rwsem
);
4069 request
->fl_flags
= fl_flags
;
4073 static int nfs4_proc_setlk(struct nfs4_state
*state
, int cmd
, struct file_lock
*request
)
4075 struct nfs4_exception exception
= { };
4079 err
= _nfs4_proc_setlk(state
, cmd
, request
);
4080 if (err
== -NFS4ERR_DENIED
)
4082 err
= nfs4_handle_exception(NFS_SERVER(state
->inode
),
4084 } while (exception
.retry
);
4089 nfs4_proc_lock(struct file
*filp
, int cmd
, struct file_lock
*request
)
4091 struct nfs_open_context
*ctx
;
4092 struct nfs4_state
*state
;
4093 unsigned long timeout
= NFS4_LOCK_MINTIMEOUT
;
4096 /* verify open state */
4097 ctx
= nfs_file_open_context(filp
);
4100 if (request
->fl_start
< 0 || request
->fl_end
< 0)
4104 return nfs4_proc_getlk(state
, F_GETLK
, request
);
4106 if (!(IS_SETLK(cmd
) || IS_SETLKW(cmd
)))
4109 if (request
->fl_type
== F_UNLCK
)
4110 return nfs4_proc_unlck(state
, cmd
, request
);
4113 status
= nfs4_proc_setlk(state
, cmd
, request
);
4114 if ((status
!= -EAGAIN
) || IS_SETLK(cmd
))
4116 timeout
= nfs4_set_lock_task_retry(timeout
);
4117 status
= -ERESTARTSYS
;
4120 } while(status
< 0);
4124 int nfs4_lock_delegation_recall(struct nfs4_state
*state
, struct file_lock
*fl
)
4126 struct nfs_server
*server
= NFS_SERVER(state
->inode
);
4127 struct nfs4_exception exception
= { };
4130 err
= nfs4_set_lock_state(state
, fl
);
4134 err
= _nfs4_do_setlk(state
, F_SETLK
, fl
, 0);
4137 printk(KERN_ERR
"%s: unhandled error %d.\n",
4142 case -NFS4ERR_EXPIRED
:
4143 case -NFS4ERR_STALE_CLIENTID
:
4144 case -NFS4ERR_STALE_STATEID
:
4145 nfs4_schedule_state_recovery(server
->nfs_client
);
4149 * The show must go on: exit, but mark the
4150 * stateid as needing recovery.
4152 case -NFS4ERR_ADMIN_REVOKED
:
4153 case -NFS4ERR_BAD_STATEID
:
4154 case -NFS4ERR_OPENMODE
:
4155 nfs4_state_mark_reclaim_nograce(server
->nfs_client
, state
);
4159 case -NFS4ERR_DENIED
:
4160 /* kill_proc(fl->fl_pid, SIGLOST, 1); */
4163 case -NFS4ERR_DELAY
:
4166 err
= nfs4_handle_exception(server
, err
, &exception
);
4167 } while (exception
.retry
);
4172 #define XATTR_NAME_NFSV4_ACL "system.nfs4_acl"
4174 int nfs4_setxattr(struct dentry
*dentry
, const char *key
, const void *buf
,
4175 size_t buflen
, int flags
)
4177 struct inode
*inode
= dentry
->d_inode
;
4179 if (strcmp(key
, XATTR_NAME_NFSV4_ACL
) != 0)
4182 return nfs4_proc_set_acl(inode
, buf
, buflen
);
4185 /* The getxattr man page suggests returning -ENODATA for unknown attributes,
4186 * and that's what we'll do for e.g. user attributes that haven't been set.
4187 * But we'll follow ext2/ext3's lead by returning -EOPNOTSUPP for unsupported
4188 * attributes in kernel-managed attribute namespaces. */
4189 ssize_t
nfs4_getxattr(struct dentry
*dentry
, const char *key
, void *buf
,
4192 struct inode
*inode
= dentry
->d_inode
;
4194 if (strcmp(key
, XATTR_NAME_NFSV4_ACL
) != 0)
4197 return nfs4_proc_get_acl(inode
, buf
, buflen
);
4200 ssize_t
nfs4_listxattr(struct dentry
*dentry
, char *buf
, size_t buflen
)
4202 size_t len
= strlen(XATTR_NAME_NFSV4_ACL
) + 1;
4204 if (!nfs4_server_supports_acls(NFS_SERVER(dentry
->d_inode
)))
4206 if (buf
&& buflen
< len
)
4209 memcpy(buf
, XATTR_NAME_NFSV4_ACL
, len
);
4213 static void nfs_fixup_referral_attributes(struct nfs_fattr
*fattr
)
4215 if (!((fattr
->valid
& NFS_ATTR_FATTR_FILEID
) &&
4216 (fattr
->valid
& NFS_ATTR_FATTR_FSID
) &&
4217 (fattr
->valid
& NFS_ATTR_FATTR_V4_REFERRAL
)))
4220 fattr
->valid
|= NFS_ATTR_FATTR_TYPE
| NFS_ATTR_FATTR_MODE
|
4221 NFS_ATTR_FATTR_NLINK
;
4222 fattr
->mode
= S_IFDIR
| S_IRUGO
| S_IXUGO
;
4226 int nfs4_proc_fs_locations(struct inode
*dir
, const struct qstr
*name
,
4227 struct nfs4_fs_locations
*fs_locations
, struct page
*page
)
4229 struct nfs_server
*server
= NFS_SERVER(dir
);
4231 [0] = FATTR4_WORD0_FSID
| FATTR4_WORD0_FS_LOCATIONS
,
4232 [1] = FATTR4_WORD1_MOUNTED_ON_FILEID
,
4234 struct nfs4_fs_locations_arg args
= {
4235 .dir_fh
= NFS_FH(dir
),
4240 struct nfs4_fs_locations_res res
= {
4241 .fs_locations
= fs_locations
,
4243 struct rpc_message msg
= {
4244 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_FS_LOCATIONS
],
4250 dprintk("%s: start\n", __func__
);
4251 nfs_fattr_init(&fs_locations
->fattr
);
4252 fs_locations
->server
= server
;
4253 fs_locations
->nlocations
= 0;
4254 status
= nfs4_call_sync(server
, &msg
, &args
, &res
, 0);
4255 nfs_fixup_referral_attributes(&fs_locations
->fattr
);
4256 dprintk("%s: returned status = %d\n", __func__
, status
);
4260 #ifdef CONFIG_NFS_V4_1
4262 * nfs4_proc_exchange_id()
4264 * Since the clientid has expired, all compounds using sessions
4265 * associated with the stale clientid will be returning
4266 * NFS4ERR_BADSESSION in the sequence operation, and will therefore
4267 * be in some phase of session reset.
4269 static int nfs4_proc_exchange_id(struct nfs_client
*clp
, struct rpc_cred
*cred
)
4271 nfs4_verifier verifier
;
4272 struct nfs41_exchange_id_args args
= {
4274 .flags
= clp
->cl_exchange_flags
,
4276 struct nfs41_exchange_id_res res
= {
4280 struct rpc_message msg
= {
4281 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_EXCHANGE_ID
],
4288 dprintk("--> %s\n", __func__
);
4289 BUG_ON(clp
== NULL
);
4291 p
= (u32
*)verifier
.data
;
4292 *p
++ = htonl((u32
)clp
->cl_boot_time
.tv_sec
);
4293 *p
= htonl((u32
)clp
->cl_boot_time
.tv_nsec
);
4294 args
.verifier
= &verifier
;
4297 args
.id_len
= scnprintf(args
.id
, sizeof(args
.id
),
4300 rpc_peeraddr2str(clp
->cl_rpcclient
,
4302 clp
->cl_id_uniquifier
);
4304 status
= rpc_call_sync(clp
->cl_rpcclient
, &msg
, 0);
4306 if (status
!= NFS4ERR_CLID_INUSE
)
4312 if (++clp
->cl_id_uniquifier
== 0)
4316 dprintk("<-- %s status= %d\n", __func__
, status
);
4320 struct nfs4_get_lease_time_data
{
4321 struct nfs4_get_lease_time_args
*args
;
4322 struct nfs4_get_lease_time_res
*res
;
4323 struct nfs_client
*clp
;
4326 static void nfs4_get_lease_time_prepare(struct rpc_task
*task
,
4330 struct nfs4_get_lease_time_data
*data
=
4331 (struct nfs4_get_lease_time_data
*)calldata
;
4333 dprintk("--> %s\n", __func__
);
4334 /* just setup sequence, do not trigger session recovery
4335 since we're invoked within one */
4336 ret
= nfs41_setup_sequence(data
->clp
->cl_session
,
4337 &data
->args
->la_seq_args
,
4338 &data
->res
->lr_seq_res
, 0, task
);
4340 BUG_ON(ret
== -EAGAIN
);
4341 rpc_call_start(task
);
4342 dprintk("<-- %s\n", __func__
);
4346 * Called from nfs4_state_manager thread for session setup, so don't recover
4347 * from sequence operation or clientid errors.
4349 static void nfs4_get_lease_time_done(struct rpc_task
*task
, void *calldata
)
4351 struct nfs4_get_lease_time_data
*data
=
4352 (struct nfs4_get_lease_time_data
*)calldata
;
4354 dprintk("--> %s\n", __func__
);
4355 nfs41_sequence_done(data
->clp
, &data
->res
->lr_seq_res
, task
->tk_status
);
4356 switch (task
->tk_status
) {
4357 case -NFS4ERR_DELAY
:
4358 case -NFS4ERR_GRACE
:
4359 dprintk("%s Retry: tk_status %d\n", __func__
, task
->tk_status
);
4360 rpc_delay(task
, NFS4_POLL_RETRY_MIN
);
4361 task
->tk_status
= 0;
4362 nfs4_restart_rpc(task
, data
->clp
);
4365 nfs41_sequence_free_slot(data
->clp
, &data
->res
->lr_seq_res
);
4366 dprintk("<-- %s\n", __func__
);
4369 struct rpc_call_ops nfs4_get_lease_time_ops
= {
4370 .rpc_call_prepare
= nfs4_get_lease_time_prepare
,
4371 .rpc_call_done
= nfs4_get_lease_time_done
,
4374 int nfs4_proc_get_lease_time(struct nfs_client
*clp
, struct nfs_fsinfo
*fsinfo
)
4376 struct rpc_task
*task
;
4377 struct nfs4_get_lease_time_args args
;
4378 struct nfs4_get_lease_time_res res
= {
4379 .lr_fsinfo
= fsinfo
,
4381 struct nfs4_get_lease_time_data data
= {
4386 struct rpc_message msg
= {
4387 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_GET_LEASE_TIME
],
4391 struct rpc_task_setup task_setup
= {
4392 .rpc_client
= clp
->cl_rpcclient
,
4393 .rpc_message
= &msg
,
4394 .callback_ops
= &nfs4_get_lease_time_ops
,
4395 .callback_data
= &data
4399 res
.lr_seq_res
.sr_slotid
= NFS4_MAX_SLOT_TABLE
;
4400 dprintk("--> %s\n", __func__
);
4401 task
= rpc_run_task(&task_setup
);
4404 status
= PTR_ERR(task
);
4406 status
= task
->tk_status
;
4409 dprintk("<-- %s return %d\n", __func__
, status
);
4415 * Reset a slot table
4417 static int nfs4_reset_slot_table(struct nfs4_slot_table
*tbl
, int max_slots
,
4418 int old_max_slots
, int ivalue
)
4423 dprintk("--> %s: max_reqs=%u, tbl %p\n", __func__
, max_slots
, tbl
);
4426 * Until we have dynamic slot table adjustment, insist
4427 * upon the same slot table size
4429 if (max_slots
!= old_max_slots
) {
4430 dprintk("%s reset slot table does't match old\n",
4432 ret
= -EINVAL
; /*XXX NFS4ERR_REQ_TOO_BIG ? */
4435 spin_lock(&tbl
->slot_tbl_lock
);
4436 for (i
= 0; i
< max_slots
; ++i
)
4437 tbl
->slots
[i
].seq_nr
= ivalue
;
4438 tbl
->highest_used_slotid
= -1;
4439 spin_unlock(&tbl
->slot_tbl_lock
);
4440 dprintk("%s: tbl=%p slots=%p max_slots=%d\n", __func__
,
4441 tbl
, tbl
->slots
, tbl
->max_slots
);
4443 dprintk("<-- %s: return %d\n", __func__
, ret
);
4448 * Reset the forechannel and backchannel slot tables
4450 static int nfs4_reset_slot_tables(struct nfs4_session
*session
)
4454 status
= nfs4_reset_slot_table(&session
->fc_slot_table
,
4455 session
->fc_attrs
.max_reqs
,
4456 session
->fc_slot_table
.max_slots
,
4461 status
= nfs4_reset_slot_table(&session
->bc_slot_table
,
4462 session
->bc_attrs
.max_reqs
,
4463 session
->bc_slot_table
.max_slots
,
4468 /* Destroy the slot table */
4469 static void nfs4_destroy_slot_tables(struct nfs4_session
*session
)
4471 if (session
->fc_slot_table
.slots
!= NULL
) {
4472 kfree(session
->fc_slot_table
.slots
);
4473 session
->fc_slot_table
.slots
= NULL
;
4475 if (session
->bc_slot_table
.slots
!= NULL
) {
4476 kfree(session
->bc_slot_table
.slots
);
4477 session
->bc_slot_table
.slots
= NULL
;
4483 * Initialize slot table
4485 static int nfs4_init_slot_table(struct nfs4_slot_table
*tbl
,
4486 int max_slots
, int ivalue
)
4489 struct nfs4_slot
*slot
;
4492 BUG_ON(max_slots
> NFS4_MAX_SLOT_TABLE
);
4494 dprintk("--> %s: max_reqs=%u\n", __func__
, max_slots
);
4496 slot
= kcalloc(max_slots
, sizeof(struct nfs4_slot
), GFP_KERNEL
);
4499 for (i
= 0; i
< max_slots
; ++i
)
4500 slot
[i
].seq_nr
= ivalue
;
4503 spin_lock(&tbl
->slot_tbl_lock
);
4504 if (tbl
->slots
!= NULL
) {
4505 spin_unlock(&tbl
->slot_tbl_lock
);
4506 dprintk("%s: slot table already initialized. tbl=%p slots=%p\n",
4507 __func__
, tbl
, tbl
->slots
);
4511 tbl
->max_slots
= max_slots
;
4513 tbl
->highest_used_slotid
= -1; /* no slot is currently used */
4514 spin_unlock(&tbl
->slot_tbl_lock
);
4515 dprintk("%s: tbl=%p slots=%p max_slots=%d\n", __func__
,
4516 tbl
, tbl
->slots
, tbl
->max_slots
);
4518 dprintk("<-- %s: return %d\n", __func__
, ret
);
4527 * Initialize the forechannel and backchannel tables
4529 static int nfs4_init_slot_tables(struct nfs4_session
*session
)
4533 status
= nfs4_init_slot_table(&session
->fc_slot_table
,
4534 session
->fc_attrs
.max_reqs
, 1);
4538 status
= nfs4_init_slot_table(&session
->bc_slot_table
,
4539 session
->bc_attrs
.max_reqs
, 0);
4541 nfs4_destroy_slot_tables(session
);
4546 struct nfs4_session
*nfs4_alloc_session(struct nfs_client
*clp
)
4548 struct nfs4_session
*session
;
4549 struct nfs4_slot_table
*tbl
;
4551 session
= kzalloc(sizeof(struct nfs4_session
), GFP_KERNEL
);
4555 set_bit(NFS4CLNT_SESSION_SETUP
, &clp
->cl_state
);
4557 * The create session reply races with the server back
4558 * channel probe. Mark the client NFS_CS_SESSION_INITING
4559 * so that the client back channel can find the
4562 clp
->cl_cons_state
= NFS_CS_SESSION_INITING
;
4564 tbl
= &session
->fc_slot_table
;
4565 spin_lock_init(&tbl
->slot_tbl_lock
);
4566 rpc_init_wait_queue(&tbl
->slot_tbl_waitq
, "ForeChannel Slot table");
4568 tbl
= &session
->bc_slot_table
;
4569 spin_lock_init(&tbl
->slot_tbl_lock
);
4570 rpc_init_wait_queue(&tbl
->slot_tbl_waitq
, "BackChannel Slot table");
4576 void nfs4_destroy_session(struct nfs4_session
*session
)
4578 nfs4_proc_destroy_session(session
);
4579 dprintk("%s Destroy backchannel for xprt %p\n",
4580 __func__
, session
->clp
->cl_rpcclient
->cl_xprt
);
4581 xprt_destroy_backchannel(session
->clp
->cl_rpcclient
->cl_xprt
,
4582 NFS41_BC_MIN_CALLBACKS
);
4583 nfs4_destroy_slot_tables(session
);
4588 * Initialize the values to be used by the client in CREATE_SESSION
4589 * If nfs4_init_session set the fore channel request and response sizes,
4592 * Set the back channel max_resp_sz_cached to zero to force the client to
4593 * always set csa_cachethis to FALSE because the current implementation
4594 * of the back channel DRC only supports caching the CB_SEQUENCE operation.
4596 static void nfs4_init_channel_attrs(struct nfs41_create_session_args
*args
)
4598 struct nfs4_session
*session
= args
->client
->cl_session
;
4599 unsigned int mxrqst_sz
= session
->fc_attrs
.max_rqst_sz
,
4600 mxresp_sz
= session
->fc_attrs
.max_resp_sz
;
4603 mxrqst_sz
= NFS_MAX_FILE_IO_SIZE
;
4605 mxresp_sz
= NFS_MAX_FILE_IO_SIZE
;
4606 /* Fore channel attributes */
4607 args
->fc_attrs
.headerpadsz
= 0;
4608 args
->fc_attrs
.max_rqst_sz
= mxrqst_sz
;
4609 args
->fc_attrs
.max_resp_sz
= mxresp_sz
;
4610 args
->fc_attrs
.max_resp_sz_cached
= mxresp_sz
;
4611 args
->fc_attrs
.max_ops
= NFS4_MAX_OPS
;
4612 args
->fc_attrs
.max_reqs
= session
->clp
->cl_rpcclient
->cl_xprt
->max_reqs
;
4614 dprintk("%s: Fore Channel : max_rqst_sz=%u max_resp_sz=%u "
4615 "max_resp_sz_cached=%u max_ops=%u max_reqs=%u\n",
4617 args
->fc_attrs
.max_rqst_sz
, args
->fc_attrs
.max_resp_sz
,
4618 args
->fc_attrs
.max_resp_sz_cached
, args
->fc_attrs
.max_ops
,
4619 args
->fc_attrs
.max_reqs
);
4621 /* Back channel attributes */
4622 args
->bc_attrs
.headerpadsz
= 0;
4623 args
->bc_attrs
.max_rqst_sz
= PAGE_SIZE
;
4624 args
->bc_attrs
.max_resp_sz
= PAGE_SIZE
;
4625 args
->bc_attrs
.max_resp_sz_cached
= 0;
4626 args
->bc_attrs
.max_ops
= NFS4_MAX_BACK_CHANNEL_OPS
;
4627 args
->bc_attrs
.max_reqs
= 1;
4629 dprintk("%s: Back Channel : max_rqst_sz=%u max_resp_sz=%u "
4630 "max_resp_sz_cached=%u max_ops=%u max_reqs=%u\n",
4632 args
->bc_attrs
.max_rqst_sz
, args
->bc_attrs
.max_resp_sz
,
4633 args
->bc_attrs
.max_resp_sz_cached
, args
->bc_attrs
.max_ops
,
4634 args
->bc_attrs
.max_reqs
);
4637 static int _verify_channel_attr(char *chan
, char *attr_name
, u32 sent
, u32 rcvd
)
4641 printk(KERN_WARNING
"%s: Session INVALID: %s channel %s increased. "
4642 "sent=%u rcvd=%u\n", __func__
, chan
, attr_name
, sent
, rcvd
);
4646 #define _verify_fore_channel_attr(_name_) \
4647 _verify_channel_attr("fore", #_name_, \
4648 args->fc_attrs._name_, \
4649 session->fc_attrs._name_)
4651 #define _verify_back_channel_attr(_name_) \
4652 _verify_channel_attr("back", #_name_, \
4653 args->bc_attrs._name_, \
4654 session->bc_attrs._name_)
4657 * The server is not allowed to increase the fore channel header pad size,
4658 * maximum response size, or maximum number of operations.
4660 * The back channel attributes are only negotiatied down: We send what the
4661 * (back channel) server insists upon.
4663 static int nfs4_verify_channel_attrs(struct nfs41_create_session_args
*args
,
4664 struct nfs4_session
*session
)
4668 ret
|= _verify_fore_channel_attr(headerpadsz
);
4669 ret
|= _verify_fore_channel_attr(max_resp_sz
);
4670 ret
|= _verify_fore_channel_attr(max_ops
);
4672 ret
|= _verify_back_channel_attr(headerpadsz
);
4673 ret
|= _verify_back_channel_attr(max_rqst_sz
);
4674 ret
|= _verify_back_channel_attr(max_resp_sz
);
4675 ret
|= _verify_back_channel_attr(max_resp_sz_cached
);
4676 ret
|= _verify_back_channel_attr(max_ops
);
4677 ret
|= _verify_back_channel_attr(max_reqs
);
4682 static int _nfs4_proc_create_session(struct nfs_client
*clp
)
4684 struct nfs4_session
*session
= clp
->cl_session
;
4685 struct nfs41_create_session_args args
= {
4687 .cb_program
= NFS4_CALLBACK
,
4689 struct nfs41_create_session_res res
= {
4692 struct rpc_message msg
= {
4693 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_CREATE_SESSION
],
4699 nfs4_init_channel_attrs(&args
);
4700 args
.flags
= (SESSION4_PERSIST
| SESSION4_BACK_CHAN
);
4702 status
= rpc_call_sync(session
->clp
->cl_rpcclient
, &msg
, 0);
4705 /* Verify the session's negotiated channel_attrs values */
4706 status
= nfs4_verify_channel_attrs(&args
, session
);
4708 /* Increment the clientid slot sequence id */
4716 * Issues a CREATE_SESSION operation to the server.
4717 * It is the responsibility of the caller to verify the session is
4718 * expired before calling this routine.
4720 int nfs4_proc_create_session(struct nfs_client
*clp
, int reset
)
4724 struct nfs_fsinfo fsinfo
;
4725 struct nfs4_session
*session
= clp
->cl_session
;
4727 dprintk("--> %s clp=%p session=%p\n", __func__
, clp
, session
);
4729 status
= _nfs4_proc_create_session(clp
);
4733 /* Init or reset the fore channel */
4735 status
= nfs4_reset_slot_tables(session
);
4737 status
= nfs4_init_slot_tables(session
);
4738 dprintk("fore channel slot table initialization returned %d\n", status
);
4742 ptr
= (unsigned *)&session
->sess_id
.data
[0];
4743 dprintk("%s client>seqid %d sessionid %u:%u:%u:%u\n", __func__
,
4744 clp
->cl_seqid
, ptr
[0], ptr
[1], ptr
[2], ptr
[3]);
4747 /* Lease time is aleady set */
4750 /* Get the lease time */
4751 status
= nfs4_proc_get_lease_time(clp
, &fsinfo
);
4753 /* Update lease time and schedule renewal */
4754 spin_lock(&clp
->cl_lock
);
4755 clp
->cl_lease_time
= fsinfo
.lease_time
* HZ
;
4756 clp
->cl_last_renewal
= jiffies
;
4757 clear_bit(NFS4CLNT_LEASE_EXPIRED
, &clp
->cl_state
);
4758 spin_unlock(&clp
->cl_lock
);
4760 nfs4_schedule_state_renewal(clp
);
4763 dprintk("<-- %s\n", __func__
);
4768 * Issue the over-the-wire RPC DESTROY_SESSION.
4769 * The caller must serialize access to this routine.
4771 int nfs4_proc_destroy_session(struct nfs4_session
*session
)
4774 struct rpc_message msg
;
4776 dprintk("--> nfs4_proc_destroy_session\n");
4778 /* session is still being setup */
4779 if (session
->clp
->cl_cons_state
!= NFS_CS_READY
)
4782 msg
.rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_DESTROY_SESSION
];
4783 msg
.rpc_argp
= session
;
4784 msg
.rpc_resp
= NULL
;
4785 msg
.rpc_cred
= NULL
;
4786 status
= rpc_call_sync(session
->clp
->cl_rpcclient
, &msg
, 0);
4790 "Got error %d from the server on DESTROY_SESSION. "
4791 "Session has been destroyed regardless...\n", status
);
4793 dprintk("<-- nfs4_proc_destroy_session\n");
4798 * Renew the cl_session lease.
4800 static int nfs4_proc_sequence(struct nfs_client
*clp
, struct rpc_cred
*cred
)
4802 struct nfs4_sequence_args args
;
4803 struct nfs4_sequence_res res
;
4805 struct rpc_message msg
= {
4806 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SEQUENCE
],
4812 args
.sa_cache_this
= 0;
4814 return nfs4_call_sync_sequence(clp
, clp
->cl_rpcclient
, &msg
, &args
,
4818 void nfs41_sequence_call_done(struct rpc_task
*task
, void *data
)
4820 struct nfs_client
*clp
= (struct nfs_client
*)data
;
4822 nfs41_sequence_done(clp
, task
->tk_msg
.rpc_resp
, task
->tk_status
);
4824 if (task
->tk_status
< 0) {
4825 dprintk("%s ERROR %d\n", __func__
, task
->tk_status
);
4827 if (_nfs4_async_handle_error(task
, NULL
, clp
, NULL
)
4829 nfs4_restart_rpc(task
, clp
);
4833 nfs41_sequence_free_slot(clp
, task
->tk_msg
.rpc_resp
);
4834 dprintk("%s rpc_cred %p\n", __func__
, task
->tk_msg
.rpc_cred
);
4836 put_rpccred(task
->tk_msg
.rpc_cred
);
4837 kfree(task
->tk_msg
.rpc_argp
);
4838 kfree(task
->tk_msg
.rpc_resp
);
4840 dprintk("<-- %s\n", __func__
);
4843 static void nfs41_sequence_prepare(struct rpc_task
*task
, void *data
)
4845 struct nfs_client
*clp
;
4846 struct nfs4_sequence_args
*args
;
4847 struct nfs4_sequence_res
*res
;
4849 clp
= (struct nfs_client
*)data
;
4850 args
= task
->tk_msg
.rpc_argp
;
4851 res
= task
->tk_msg
.rpc_resp
;
4853 if (nfs4_setup_sequence(clp
, args
, res
, 0, task
))
4855 rpc_call_start(task
);
4858 static const struct rpc_call_ops nfs41_sequence_ops
= {
4859 .rpc_call_done
= nfs41_sequence_call_done
,
4860 .rpc_call_prepare
= nfs41_sequence_prepare
,
4863 static int nfs41_proc_async_sequence(struct nfs_client
*clp
,
4864 struct rpc_cred
*cred
)
4866 struct nfs4_sequence_args
*args
;
4867 struct nfs4_sequence_res
*res
;
4868 struct rpc_message msg
= {
4869 .rpc_proc
= &nfs4_procedures
[NFSPROC4_CLNT_SEQUENCE
],
4873 args
= kzalloc(sizeof(*args
), GFP_KERNEL
);
4876 res
= kzalloc(sizeof(*res
), GFP_KERNEL
);
4881 res
->sr_slotid
= NFS4_MAX_SLOT_TABLE
;
4882 msg
.rpc_argp
= args
;
4885 return rpc_call_async(clp
->cl_rpcclient
, &msg
, RPC_TASK_SOFT
,
4886 &nfs41_sequence_ops
, (void *)clp
);
4889 #endif /* CONFIG_NFS_V4_1 */
4891 struct nfs4_state_recovery_ops nfs40_reboot_recovery_ops
= {
4892 .owner_flag_bit
= NFS_OWNER_RECLAIM_REBOOT
,
4893 .state_flag_bit
= NFS_STATE_RECLAIM_REBOOT
,
4894 .recover_open
= nfs4_open_reclaim
,
4895 .recover_lock
= nfs4_lock_reclaim
,
4896 .establish_clid
= nfs4_init_clientid
,
4897 .get_clid_cred
= nfs4_get_setclientid_cred
,
4900 #if defined(CONFIG_NFS_V4_1)
4901 struct nfs4_state_recovery_ops nfs41_reboot_recovery_ops
= {
4902 .owner_flag_bit
= NFS_OWNER_RECLAIM_REBOOT
,
4903 .state_flag_bit
= NFS_STATE_RECLAIM_REBOOT
,
4904 .recover_open
= nfs4_open_reclaim
,
4905 .recover_lock
= nfs4_lock_reclaim
,
4906 .establish_clid
= nfs4_proc_exchange_id
,
4907 .get_clid_cred
= nfs4_get_exchange_id_cred
,
4909 #endif /* CONFIG_NFS_V4_1 */
4911 struct nfs4_state_recovery_ops nfs40_nograce_recovery_ops
= {
4912 .owner_flag_bit
= NFS_OWNER_RECLAIM_NOGRACE
,
4913 .state_flag_bit
= NFS_STATE_RECLAIM_NOGRACE
,
4914 .recover_open
= nfs4_open_expired
,
4915 .recover_lock
= nfs4_lock_expired
,
4916 .establish_clid
= nfs4_init_clientid
,
4917 .get_clid_cred
= nfs4_get_setclientid_cred
,
4920 #if defined(CONFIG_NFS_V4_1)
4921 struct nfs4_state_recovery_ops nfs41_nograce_recovery_ops
= {
4922 .owner_flag_bit
= NFS_OWNER_RECLAIM_NOGRACE
,
4923 .state_flag_bit
= NFS_STATE_RECLAIM_NOGRACE
,
4924 .recover_open
= nfs4_open_expired
,
4925 .recover_lock
= nfs4_lock_expired
,
4926 .establish_clid
= nfs4_proc_exchange_id
,
4927 .get_clid_cred
= nfs4_get_exchange_id_cred
,
4929 #endif /* CONFIG_NFS_V4_1 */
4931 struct nfs4_state_maintenance_ops nfs40_state_renewal_ops
= {
4932 .sched_state_renewal
= nfs4_proc_async_renew
,
4933 .get_state_renewal_cred_locked
= nfs4_get_renew_cred_locked
,
4934 .renew_lease
= nfs4_proc_renew
,
4937 #if defined(CONFIG_NFS_V4_1)
4938 struct nfs4_state_maintenance_ops nfs41_state_renewal_ops
= {
4939 .sched_state_renewal
= nfs41_proc_async_sequence
,
4940 .get_state_renewal_cred_locked
= nfs4_get_machine_cred_locked
,
4941 .renew_lease
= nfs4_proc_sequence
,
4946 * Per minor version reboot and network partition recovery ops
4949 struct nfs4_state_recovery_ops
*nfs4_reboot_recovery_ops
[] = {
4950 &nfs40_reboot_recovery_ops
,
4951 #if defined(CONFIG_NFS_V4_1)
4952 &nfs41_reboot_recovery_ops
,
4956 struct nfs4_state_recovery_ops
*nfs4_nograce_recovery_ops
[] = {
4957 &nfs40_nograce_recovery_ops
,
4958 #if defined(CONFIG_NFS_V4_1)
4959 &nfs41_nograce_recovery_ops
,
4963 struct nfs4_state_maintenance_ops
*nfs4_state_renewal_ops
[] = {
4964 &nfs40_state_renewal_ops
,
4965 #if defined(CONFIG_NFS_V4_1)
4966 &nfs41_state_renewal_ops
,
4970 static const struct inode_operations nfs4_file_inode_operations
= {
4971 .permission
= nfs_permission
,
4972 .getattr
= nfs_getattr
,
4973 .setattr
= nfs_setattr
,
4974 .getxattr
= nfs4_getxattr
,
4975 .setxattr
= nfs4_setxattr
,
4976 .listxattr
= nfs4_listxattr
,
4979 const struct nfs_rpc_ops nfs_v4_clientops
= {
4980 .version
= 4, /* protocol version */
4981 .dentry_ops
= &nfs4_dentry_operations
,
4982 .dir_inode_ops
= &nfs4_dir_inode_operations
,
4983 .file_inode_ops
= &nfs4_file_inode_operations
,
4984 .getroot
= nfs4_proc_get_root
,
4985 .getattr
= nfs4_proc_getattr
,
4986 .setattr
= nfs4_proc_setattr
,
4987 .lookupfh
= nfs4_proc_lookupfh
,
4988 .lookup
= nfs4_proc_lookup
,
4989 .access
= nfs4_proc_access
,
4990 .readlink
= nfs4_proc_readlink
,
4991 .create
= nfs4_proc_create
,
4992 .remove
= nfs4_proc_remove
,
4993 .unlink_setup
= nfs4_proc_unlink_setup
,
4994 .unlink_done
= nfs4_proc_unlink_done
,
4995 .rename
= nfs4_proc_rename
,
4996 .link
= nfs4_proc_link
,
4997 .symlink
= nfs4_proc_symlink
,
4998 .mkdir
= nfs4_proc_mkdir
,
4999 .rmdir
= nfs4_proc_remove
,
5000 .readdir
= nfs4_proc_readdir
,
5001 .mknod
= nfs4_proc_mknod
,
5002 .statfs
= nfs4_proc_statfs
,
5003 .fsinfo
= nfs4_proc_fsinfo
,
5004 .pathconf
= nfs4_proc_pathconf
,
5005 .set_capabilities
= nfs4_server_capabilities
,
5006 .decode_dirent
= nfs4_decode_dirent
,
5007 .read_setup
= nfs4_proc_read_setup
,
5008 .read_done
= nfs4_read_done
,
5009 .write_setup
= nfs4_proc_write_setup
,
5010 .write_done
= nfs4_write_done
,
5011 .commit_setup
= nfs4_proc_commit_setup
,
5012 .commit_done
= nfs4_commit_done
,
5013 .lock
= nfs4_proc_lock
,
5014 .clear_acl_cache
= nfs4_zap_acl_attr
,
5015 .close_context
= nfs4_close_context
,