4 * Client-side procedure declarations for NFSv4.
6 * Copyright (c) 2002 The Regents of the University of Michigan.
9 * Kendrick Smith <kmsmith@umich.edu>
10 * Andy Adamson <andros@umich.edu>
12 * Redistribution and use in source and binary forms, with or without
13 * modification, are permitted provided that the following conditions
16 * 1. Redistributions of source code must retain the above copyright
17 * notice, this list of conditions and the following disclaimer.
18 * 2. Redistributions in binary form must reproduce the above copyright
19 * notice, this list of conditions and the following disclaimer in the
20 * documentation and/or other materials provided with the distribution.
21 * 3. Neither the name of the University nor the names of its
22 * contributors may be used to endorse or promote products derived
23 * from this software without specific prior written permission.
25 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
26 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
27 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
28 * DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
29 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
30 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
31 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
32 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
33 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
34 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
35 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
39 #include <linux/delay.h>
40 #include <linux/errno.h>
41 #include <linux/string.h>
42 #include <linux/ratelimit.h>
43 #include <linux/printk.h>
44 #include <linux/slab.h>
45 #include <linux/sunrpc/clnt.h>
46 #include <linux/nfs.h>
47 #include <linux/nfs4.h>
48 #include <linux/nfs_fs.h>
49 #include <linux/nfs_page.h>
50 #include <linux/nfs_mount.h>
51 #include <linux/namei.h>
52 #include <linux/mount.h>
53 #include <linux/module.h>
54 #include <linux/nfs_idmap.h>
55 #include <linux/xattr.h>
56 #include <linux/utsname.h>
57 #include <linux/freezer.h>
60 #include "delegation.h"
66 #include "nfs4session.h"
69 #define NFSDBG_FACILITY NFSDBG_PROC
71 #define NFS4_POLL_RETRY_MIN (HZ/10)
72 #define NFS4_POLL_RETRY_MAX (15*HZ)
75 static int _nfs4_proc_open(struct nfs4_opendata *data);
76 static int _nfs4_recover_proc_open(struct nfs4_opendata *data);
77 static int nfs4_do_fsinfo(struct nfs_server *, struct nfs_fh *, struct nfs_fsinfo *);
78 static int nfs4_async_handle_error(struct rpc_task *, const struct nfs_server *, struct nfs4_state *);
79 static void nfs_fixup_referral_attributes(struct nfs_fattr *fattr);
80 static int nfs4_proc_getattr(struct nfs_server *, struct nfs_fh *, struct nfs_fattr *);
81 static int _nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fattr *fattr);
82 static int nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred,
83 struct nfs_fattr *fattr, struct iattr *sattr,
84 struct nfs4_state *state);
85 #ifdef CONFIG_NFS_V4_1
86 static int nfs41_test_stateid(struct nfs_server *, nfs4_stateid *,
88 static int nfs41_free_stateid(struct nfs_server *, nfs4_stateid *,
91 /* Prevent leaks of NFSv4 errors into userland */
92 static int nfs4_map_errors(int err)
97 case -NFS4ERR_RESOURCE:
98 case -NFS4ERR_LAYOUTTRYLATER:
99 case -NFS4ERR_RECALLCONFLICT:
101 case -NFS4ERR_WRONGSEC:
103 case -NFS4ERR_BADOWNER:
104 case -NFS4ERR_BADNAME:
106 case -NFS4ERR_SHARE_DENIED:
108 case -NFS4ERR_MINOR_VERS_MISMATCH:
109 return -EPROTONOSUPPORT;
110 case -NFS4ERR_ACCESS:
112 case -NFS4ERR_FILE_OPEN:
115 dprintk("%s could not handle NFSv4 error %d\n",
123 * This is our standard bitmap for GETATTR requests.
125 const u32 nfs4_fattr_bitmap[3] = {
127 | FATTR4_WORD0_CHANGE
130 | FATTR4_WORD0_FILEID,
132 | FATTR4_WORD1_NUMLINKS
134 | FATTR4_WORD1_OWNER_GROUP
135 | FATTR4_WORD1_RAWDEV
136 | FATTR4_WORD1_SPACE_USED
137 | FATTR4_WORD1_TIME_ACCESS
138 | FATTR4_WORD1_TIME_METADATA
139 | FATTR4_WORD1_TIME_MODIFY
142 static const u32 nfs4_pnfs_open_bitmap[3] = {
144 | FATTR4_WORD0_CHANGE
147 | FATTR4_WORD0_FILEID,
149 | FATTR4_WORD1_NUMLINKS
151 | FATTR4_WORD1_OWNER_GROUP
152 | FATTR4_WORD1_RAWDEV
153 | FATTR4_WORD1_SPACE_USED
154 | FATTR4_WORD1_TIME_ACCESS
155 | FATTR4_WORD1_TIME_METADATA
156 | FATTR4_WORD1_TIME_MODIFY,
157 FATTR4_WORD2_MDSTHRESHOLD
160 static const u32 nfs4_open_noattr_bitmap[3] = {
162 | FATTR4_WORD0_CHANGE
163 | FATTR4_WORD0_FILEID,
166 const u32 nfs4_statfs_bitmap[2] = {
167 FATTR4_WORD0_FILES_AVAIL
168 | FATTR4_WORD0_FILES_FREE
169 | FATTR4_WORD0_FILES_TOTAL,
170 FATTR4_WORD1_SPACE_AVAIL
171 | FATTR4_WORD1_SPACE_FREE
172 | FATTR4_WORD1_SPACE_TOTAL
175 const u32 nfs4_pathconf_bitmap[2] = {
177 | FATTR4_WORD0_MAXNAME,
181 const u32 nfs4_fsinfo_bitmap[3] = { FATTR4_WORD0_MAXFILESIZE
182 | FATTR4_WORD0_MAXREAD
183 | FATTR4_WORD0_MAXWRITE
184 | FATTR4_WORD0_LEASE_TIME,
185 FATTR4_WORD1_TIME_DELTA
186 | FATTR4_WORD1_FS_LAYOUT_TYPES,
187 FATTR4_WORD2_LAYOUT_BLKSIZE
190 const u32 nfs4_fs_locations_bitmap[2] = {
192 | FATTR4_WORD0_CHANGE
195 | FATTR4_WORD0_FILEID
196 | FATTR4_WORD0_FS_LOCATIONS,
198 | FATTR4_WORD1_NUMLINKS
200 | FATTR4_WORD1_OWNER_GROUP
201 | FATTR4_WORD1_RAWDEV
202 | FATTR4_WORD1_SPACE_USED
203 | FATTR4_WORD1_TIME_ACCESS
204 | FATTR4_WORD1_TIME_METADATA
205 | FATTR4_WORD1_TIME_MODIFY
206 | FATTR4_WORD1_MOUNTED_ON_FILEID
209 static void nfs4_setup_readdir(u64 cookie, __be32 *verifier, struct dentry *dentry,
210 struct nfs4_readdir_arg *readdir)
215 readdir->cookie = cookie;
216 memcpy(&readdir->verifier, verifier, sizeof(readdir->verifier));
221 memset(&readdir->verifier, 0, sizeof(readdir->verifier));
226 * NFSv4 servers do not return entries for '.' and '..'
227 * Therefore, we fake these entries here. We let '.'
228 * have cookie 0 and '..' have cookie 1. Note that
229 * when talking to the server, we always send cookie 0
232 start = p = kmap_atomic(*readdir->pages);
235 *p++ = xdr_one; /* next */
236 *p++ = xdr_zero; /* cookie, first word */
237 *p++ = xdr_one; /* cookie, second word */
238 *p++ = xdr_one; /* entry len */
239 memcpy(p, ".\0\0\0", 4); /* entry */
241 *p++ = xdr_one; /* bitmap length */
242 *p++ = htonl(FATTR4_WORD0_FILEID); /* bitmap */
243 *p++ = htonl(8); /* attribute buffer length */
244 p = xdr_encode_hyper(p, NFS_FILEID(dentry->d_inode));
247 *p++ = xdr_one; /* next */
248 *p++ = xdr_zero; /* cookie, first word */
249 *p++ = xdr_two; /* cookie, second word */
250 *p++ = xdr_two; /* entry len */
251 memcpy(p, "..\0\0", 4); /* entry */
253 *p++ = xdr_one; /* bitmap length */
254 *p++ = htonl(FATTR4_WORD0_FILEID); /* bitmap */
255 *p++ = htonl(8); /* attribute buffer length */
256 p = xdr_encode_hyper(p, NFS_FILEID(dentry->d_parent->d_inode));
258 readdir->pgbase = (char *)p - (char *)start;
259 readdir->count -= readdir->pgbase;
260 kunmap_atomic(start);
263 static int nfs4_delay(struct rpc_clnt *clnt, long *timeout)
270 *timeout = NFS4_POLL_RETRY_MIN;
271 if (*timeout > NFS4_POLL_RETRY_MAX)
272 *timeout = NFS4_POLL_RETRY_MAX;
273 freezable_schedule_timeout_killable(*timeout);
274 if (fatal_signal_pending(current))
280 /* This is the error handling routine for processes that are allowed
283 static int nfs4_handle_exception(struct nfs_server *server, int errorcode, struct nfs4_exception *exception)
285 struct nfs_client *clp = server->nfs_client;
286 struct nfs4_state *state = exception->state;
287 struct inode *inode = exception->inode;
290 exception->retry = 0;
294 case -NFS4ERR_OPENMODE:
295 if (inode && nfs4_have_delegation(inode, FMODE_READ)) {
296 nfs4_inode_return_delegation(inode);
297 exception->retry = 1;
302 ret = nfs4_schedule_stateid_recovery(server, state);
305 goto wait_on_recovery;
306 case -NFS4ERR_DELEG_REVOKED:
307 case -NFS4ERR_ADMIN_REVOKED:
308 case -NFS4ERR_BAD_STATEID:
309 if (inode != NULL && nfs4_have_delegation(inode, FMODE_READ)) {
310 nfs_remove_bad_delegation(inode);
311 exception->retry = 1;
316 ret = nfs4_schedule_stateid_recovery(server, state);
319 goto wait_on_recovery;
320 case -NFS4ERR_EXPIRED:
322 ret = nfs4_schedule_stateid_recovery(server, state);
326 case -NFS4ERR_STALE_STATEID:
327 case -NFS4ERR_STALE_CLIENTID:
328 nfs4_schedule_lease_recovery(clp);
329 goto wait_on_recovery;
330 #if defined(CONFIG_NFS_V4_1)
331 case -NFS4ERR_BADSESSION:
332 case -NFS4ERR_BADSLOT:
333 case -NFS4ERR_BAD_HIGH_SLOT:
334 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION:
335 case -NFS4ERR_DEADSESSION:
336 case -NFS4ERR_SEQ_FALSE_RETRY:
337 case -NFS4ERR_SEQ_MISORDERED:
338 dprintk("%s ERROR: %d Reset session\n", __func__,
340 nfs4_schedule_session_recovery(clp->cl_session, errorcode);
341 goto wait_on_recovery;
342 #endif /* defined(CONFIG_NFS_V4_1) */
343 case -NFS4ERR_FILE_OPEN:
344 if (exception->timeout > HZ) {
345 /* We have retried a decent amount, time to
353 ret = nfs4_delay(server->client, &exception->timeout);
356 case -NFS4ERR_RETRY_UNCACHED_REP:
357 case -NFS4ERR_OLD_STATEID:
358 exception->retry = 1;
360 case -NFS4ERR_BADOWNER:
361 /* The following works around a Linux server bug! */
362 case -NFS4ERR_BADNAME:
363 if (server->caps & NFS_CAP_UIDGID_NOMAP) {
364 server->caps &= ~NFS_CAP_UIDGID_NOMAP;
365 exception->retry = 1;
366 printk(KERN_WARNING "NFS: v4 server %s "
367 "does not accept raw "
369 "Reenabling the idmapper.\n",
370 server->nfs_client->cl_hostname);
373 /* We failed to handle the error */
374 return nfs4_map_errors(ret);
376 ret = nfs4_wait_clnt_recover(clp);
378 exception->retry = 1;
383 static void do_renew_lease(struct nfs_client *clp, unsigned long timestamp)
385 spin_lock(&clp->cl_lock);
386 if (time_before(clp->cl_last_renewal,timestamp))
387 clp->cl_last_renewal = timestamp;
388 spin_unlock(&clp->cl_lock);
391 static void renew_lease(const struct nfs_server *server, unsigned long timestamp)
393 do_renew_lease(server->nfs_client, timestamp);
396 #if defined(CONFIG_NFS_V4_1)
398 static void nfs41_sequence_free_slot(struct nfs4_sequence_res *res)
400 struct nfs4_session *session;
401 struct nfs4_slot_table *tbl;
402 bool send_new_highest_used_slotid = false;
405 /* just wake up the next guy waiting since
406 * we may have not consumed a slot after all */
407 dprintk("%s: No slot\n", __func__);
410 tbl = res->sr_slot->table;
411 session = tbl->session;
413 spin_lock(&tbl->slot_tbl_lock);
414 /* Be nice to the server: try to ensure that the last transmitted
415 * value for highest_user_slotid <= target_highest_slotid
417 if (tbl->highest_used_slotid > tbl->target_highest_slotid)
418 send_new_highest_used_slotid = true;
420 if (nfs41_wake_and_assign_slot(tbl, res->sr_slot)) {
421 send_new_highest_used_slotid = false;
424 nfs4_free_slot(tbl, res->sr_slot);
426 if (tbl->highest_used_slotid != NFS4_NO_SLOT)
427 send_new_highest_used_slotid = false;
429 spin_unlock(&tbl->slot_tbl_lock);
431 if (send_new_highest_used_slotid)
432 nfs41_server_notify_highest_slotid_update(session->clp);
435 static int nfs41_sequence_done(struct rpc_task *task, struct nfs4_sequence_res *res)
437 struct nfs4_session *session;
438 struct nfs4_slot *slot;
439 struct nfs_client *clp;
440 bool interrupted = false;
443 /* don't increment the sequence number if the task wasn't sent */
444 if (!RPC_WAS_SENT(task))
448 session = slot->table->session;
450 if (slot->interrupted) {
451 slot->interrupted = 0;
455 /* Check the SEQUENCE operation status */
456 switch (res->sr_status) {
458 /* Update the slot's sequence and clientid lease timer */
461 do_renew_lease(clp, res->sr_timestamp);
462 /* Check sequence flags */
463 if (res->sr_status_flags != 0)
464 nfs4_schedule_lease_recovery(clp);
465 nfs41_update_target_slotid(slot->table, slot, res);
469 * sr_status remains 1 if an RPC level error occurred.
470 * The server may or may not have processed the sequence
472 * Mark the slot as having hosted an interrupted RPC call.
474 slot->interrupted = 1;
477 /* The server detected a resend of the RPC call and
478 * returned NFS4ERR_DELAY as per Section 2.10.6.2
481 dprintk("%s: slot=%u seq=%u: Operation in progress\n",
486 case -NFS4ERR_BADSLOT:
488 * The slot id we used was probably retired. Try again
489 * using a different slot id.
492 case -NFS4ERR_SEQ_MISORDERED:
494 * Was the last operation on this sequence interrupted?
495 * If so, retry after bumping the sequence number.
502 * Could this slot have been previously retired?
503 * If so, then the server may be expecting seq_nr = 1!
505 if (slot->seq_nr != 1) {
510 case -NFS4ERR_SEQ_FALSE_RETRY:
514 /* Just update the slot sequence no. */
518 /* The session may be reset by one of the error handlers. */
519 dprintk("%s: Error %d free the slot \n", __func__, res->sr_status);
520 nfs41_sequence_free_slot(res);
523 if (rpc_restart_call_prepare(task)) {
529 if (!rpc_restart_call(task))
531 rpc_delay(task, NFS4_POLL_RETRY_MAX);
535 static int nfs4_sequence_done(struct rpc_task *task,
536 struct nfs4_sequence_res *res)
538 if (res->sr_slot == NULL)
540 return nfs41_sequence_done(task, res);
543 static void nfs41_init_sequence(struct nfs4_sequence_args *args,
544 struct nfs4_sequence_res *res, int cache_reply)
546 args->sa_slot = NULL;
547 args->sa_cache_this = 0;
548 args->sa_privileged = 0;
550 args->sa_cache_this = 1;
554 static void nfs4_set_sequence_privileged(struct nfs4_sequence_args *args)
556 args->sa_privileged = 1;
559 int nfs41_setup_sequence(struct nfs4_session *session,
560 struct nfs4_sequence_args *args,
561 struct nfs4_sequence_res *res,
562 struct rpc_task *task)
564 struct nfs4_slot *slot;
565 struct nfs4_slot_table *tbl;
567 dprintk("--> %s\n", __func__);
568 /* slot already allocated? */
569 if (res->sr_slot != NULL)
572 tbl = &session->fc_slot_table;
574 task->tk_timeout = 0;
576 spin_lock(&tbl->slot_tbl_lock);
577 if (test_bit(NFS4_SLOT_TBL_DRAINING, &tbl->slot_tbl_state) &&
578 !args->sa_privileged) {
579 /* The state manager will wait until the slot table is empty */
580 dprintk("%s session is draining\n", __func__);
584 slot = nfs4_alloc_slot(tbl);
586 /* If out of memory, try again in 1/4 second */
587 if (slot == ERR_PTR(-ENOMEM))
588 task->tk_timeout = HZ >> 2;
589 dprintk("<-- %s: no free slots\n", __func__);
592 spin_unlock(&tbl->slot_tbl_lock);
594 args->sa_slot = slot;
596 dprintk("<-- %s slotid=%d seqid=%d\n", __func__,
597 slot->slot_nr, slot->seq_nr);
600 res->sr_timestamp = jiffies;
601 res->sr_status_flags = 0;
603 * sr_status is only set in decode_sequence, and so will remain
604 * set to 1 if an rpc level failure occurs.
608 rpc_call_start(task);
611 /* Privileged tasks are queued with top priority */
612 if (args->sa_privileged)
613 rpc_sleep_on_priority(&tbl->slot_tbl_waitq, task,
614 NULL, RPC_PRIORITY_PRIVILEGED);
616 rpc_sleep_on(&tbl->slot_tbl_waitq, task, NULL);
617 spin_unlock(&tbl->slot_tbl_lock);
620 EXPORT_SYMBOL_GPL(nfs41_setup_sequence);
622 int nfs4_setup_sequence(const struct nfs_server *server,
623 struct nfs4_sequence_args *args,
624 struct nfs4_sequence_res *res,
625 struct rpc_task *task)
627 struct nfs4_session *session = nfs4_get_session(server);
630 if (session == NULL) {
631 rpc_call_start(task);
635 dprintk("--> %s clp %p session %p sr_slot %d\n",
636 __func__, session->clp, session, res->sr_slot ?
637 res->sr_slot->slot_nr : -1);
639 ret = nfs41_setup_sequence(session, args, res, task);
641 dprintk("<-- %s status=%d\n", __func__, ret);
645 struct nfs41_call_sync_data {
646 const struct nfs_server *seq_server;
647 struct nfs4_sequence_args *seq_args;
648 struct nfs4_sequence_res *seq_res;
651 static void nfs41_call_sync_prepare(struct rpc_task *task, void *calldata)
653 struct nfs41_call_sync_data *data = calldata;
654 struct nfs4_session *session = nfs4_get_session(data->seq_server);
656 dprintk("--> %s data->seq_server %p\n", __func__, data->seq_server);
658 nfs41_setup_sequence(session, data->seq_args, data->seq_res, task);
661 static void nfs41_call_sync_done(struct rpc_task *task, void *calldata)
663 struct nfs41_call_sync_data *data = calldata;
665 nfs41_sequence_done(task, data->seq_res);
668 static const struct rpc_call_ops nfs41_call_sync_ops = {
669 .rpc_call_prepare = nfs41_call_sync_prepare,
670 .rpc_call_done = nfs41_call_sync_done,
673 static int nfs4_call_sync_sequence(struct rpc_clnt *clnt,
674 struct nfs_server *server,
675 struct rpc_message *msg,
676 struct nfs4_sequence_args *args,
677 struct nfs4_sequence_res *res)
680 struct rpc_task *task;
681 struct nfs41_call_sync_data data = {
682 .seq_server = server,
686 struct rpc_task_setup task_setup = {
689 .callback_ops = &nfs41_call_sync_ops,
690 .callback_data = &data
693 task = rpc_run_task(&task_setup);
697 ret = task->tk_status;
705 void nfs41_init_sequence(struct nfs4_sequence_args *args,
706 struct nfs4_sequence_res *res, int cache_reply)
710 static void nfs4_set_sequence_privileged(struct nfs4_sequence_args *args)
715 static int nfs4_sequence_done(struct rpc_task *task,
716 struct nfs4_sequence_res *res)
720 #endif /* CONFIG_NFS_V4_1 */
723 int _nfs4_call_sync(struct rpc_clnt *clnt,
724 struct nfs_server *server,
725 struct rpc_message *msg,
726 struct nfs4_sequence_args *args,
727 struct nfs4_sequence_res *res)
729 return rpc_call_sync(clnt, msg, 0);
733 int nfs4_call_sync(struct rpc_clnt *clnt,
734 struct nfs_server *server,
735 struct rpc_message *msg,
736 struct nfs4_sequence_args *args,
737 struct nfs4_sequence_res *res,
740 nfs41_init_sequence(args, res, cache_reply);
741 return server->nfs_client->cl_mvops->call_sync(clnt, server, msg,
745 static void update_changeattr(struct inode *dir, struct nfs4_change_info *cinfo)
747 struct nfs_inode *nfsi = NFS_I(dir);
749 spin_lock(&dir->i_lock);
750 nfsi->cache_validity |= NFS_INO_INVALID_ATTR|NFS_INO_INVALID_DATA;
751 if (!cinfo->atomic || cinfo->before != dir->i_version)
752 nfs_force_lookup_revalidate(dir);
753 dir->i_version = cinfo->after;
754 nfs_fscache_invalidate(dir);
755 spin_unlock(&dir->i_lock);
758 struct nfs4_opendata {
760 struct nfs_openargs o_arg;
761 struct nfs_openres o_res;
762 struct nfs_open_confirmargs c_arg;
763 struct nfs_open_confirmres c_res;
764 struct nfs4_string owner_name;
765 struct nfs4_string group_name;
766 struct nfs_fattr f_attr;
768 struct dentry *dentry;
769 struct nfs4_state_owner *owner;
770 struct nfs4_state *state;
772 unsigned long timestamp;
773 unsigned int rpc_done : 1;
774 unsigned int is_recover : 1;
779 static bool nfs4_clear_cap_atomic_open_v1(struct nfs_server *server,
780 int err, struct nfs4_exception *exception)
784 if (!(server->caps & NFS_CAP_ATOMIC_OPEN_V1))
786 server->caps &= ~NFS_CAP_ATOMIC_OPEN_V1;
787 exception->retry = 1;
791 static enum open_claim_type4
792 nfs4_map_atomic_open_claim(struct nfs_server *server,
793 enum open_claim_type4 claim)
795 if (server->caps & NFS_CAP_ATOMIC_OPEN_V1)
800 case NFS4_OPEN_CLAIM_FH:
801 return NFS4_OPEN_CLAIM_NULL;
802 case NFS4_OPEN_CLAIM_DELEG_CUR_FH:
803 return NFS4_OPEN_CLAIM_DELEGATE_CUR;
804 case NFS4_OPEN_CLAIM_DELEG_PREV_FH:
805 return NFS4_OPEN_CLAIM_DELEGATE_PREV;
809 static void nfs4_init_opendata_res(struct nfs4_opendata *p)
811 p->o_res.f_attr = &p->f_attr;
812 p->o_res.seqid = p->o_arg.seqid;
813 p->c_res.seqid = p->c_arg.seqid;
814 p->o_res.server = p->o_arg.server;
815 p->o_res.access_request = p->o_arg.access;
816 nfs_fattr_init(&p->f_attr);
817 nfs_fattr_init_names(&p->f_attr, &p->owner_name, &p->group_name);
820 static struct nfs4_opendata *nfs4_opendata_alloc(struct dentry *dentry,
821 struct nfs4_state_owner *sp, fmode_t fmode, int flags,
822 const struct iattr *attrs,
823 enum open_claim_type4 claim,
826 struct dentry *parent = dget_parent(dentry);
827 struct inode *dir = parent->d_inode;
828 struct nfs_server *server = NFS_SERVER(dir);
829 struct nfs4_opendata *p;
831 p = kzalloc(sizeof(*p), gfp_mask);
834 p->o_arg.seqid = nfs_alloc_seqid(&sp->so_seqid, gfp_mask);
835 if (p->o_arg.seqid == NULL)
837 nfs_sb_active(dentry->d_sb);
838 p->dentry = dget(dentry);
841 atomic_inc(&sp->so_count);
842 p->o_arg.open_flags = flags;
843 p->o_arg.fmode = fmode & (FMODE_READ|FMODE_WRITE);
844 /* don't put an ACCESS op in OPEN compound if O_EXCL, because ACCESS
845 * will return permission denied for all bits until close */
846 if (!(flags & O_EXCL)) {
847 /* ask server to check for all possible rights as results
849 p->o_arg.access = NFS4_ACCESS_READ | NFS4_ACCESS_MODIFY |
850 NFS4_ACCESS_EXTEND | NFS4_ACCESS_EXECUTE;
852 p->o_arg.clientid = server->nfs_client->cl_clientid;
853 p->o_arg.id.create_time = ktime_to_ns(sp->so_seqid.create_time);
854 p->o_arg.id.uniquifier = sp->so_seqid.owner_id;
855 p->o_arg.name = &dentry->d_name;
856 p->o_arg.server = server;
857 p->o_arg.bitmask = server->attr_bitmask;
858 p->o_arg.open_bitmap = &nfs4_fattr_bitmap[0];
859 p->o_arg.claim = nfs4_map_atomic_open_claim(server, claim);
860 switch (p->o_arg.claim) {
861 case NFS4_OPEN_CLAIM_NULL:
862 case NFS4_OPEN_CLAIM_DELEGATE_CUR:
863 case NFS4_OPEN_CLAIM_DELEGATE_PREV:
864 p->o_arg.fh = NFS_FH(dir);
866 case NFS4_OPEN_CLAIM_PREVIOUS:
867 case NFS4_OPEN_CLAIM_FH:
868 case NFS4_OPEN_CLAIM_DELEG_CUR_FH:
869 case NFS4_OPEN_CLAIM_DELEG_PREV_FH:
870 p->o_arg.fh = NFS_FH(dentry->d_inode);
872 if (attrs != NULL && attrs->ia_valid != 0) {
875 p->o_arg.u.attrs = &p->attrs;
876 memcpy(&p->attrs, attrs, sizeof(p->attrs));
879 verf[1] = current->pid;
880 memcpy(p->o_arg.u.verifier.data, verf,
881 sizeof(p->o_arg.u.verifier.data));
883 p->c_arg.fh = &p->o_res.fh;
884 p->c_arg.stateid = &p->o_res.stateid;
885 p->c_arg.seqid = p->o_arg.seqid;
886 nfs4_init_opendata_res(p);
896 static void nfs4_opendata_free(struct kref *kref)
898 struct nfs4_opendata *p = container_of(kref,
899 struct nfs4_opendata, kref);
900 struct super_block *sb = p->dentry->d_sb;
902 nfs_free_seqid(p->o_arg.seqid);
903 if (p->state != NULL)
904 nfs4_put_open_state(p->state);
905 nfs4_put_state_owner(p->owner);
909 nfs_fattr_free_names(&p->f_attr);
913 static void nfs4_opendata_put(struct nfs4_opendata *p)
916 kref_put(&p->kref, nfs4_opendata_free);
919 static int nfs4_wait_for_completion_rpc_task(struct rpc_task *task)
923 ret = rpc_wait_for_completion_task(task);
927 static int can_open_cached(struct nfs4_state *state, fmode_t mode, int open_mode)
931 if (open_mode & (O_EXCL|O_TRUNC))
933 switch (mode & (FMODE_READ|FMODE_WRITE)) {
935 ret |= test_bit(NFS_O_RDONLY_STATE, &state->flags) != 0
936 && state->n_rdonly != 0;
939 ret |= test_bit(NFS_O_WRONLY_STATE, &state->flags) != 0
940 && state->n_wronly != 0;
942 case FMODE_READ|FMODE_WRITE:
943 ret |= test_bit(NFS_O_RDWR_STATE, &state->flags) != 0
944 && state->n_rdwr != 0;
950 static int can_open_delegated(struct nfs_delegation *delegation, fmode_t fmode)
952 if (delegation == NULL)
954 if ((delegation->type & fmode) != fmode)
956 if (test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags))
958 if (test_bit(NFS_DELEGATION_RETURNING, &delegation->flags))
960 nfs_mark_delegation_referenced(delegation);
964 static void update_open_stateflags(struct nfs4_state *state, fmode_t fmode)
973 case FMODE_READ|FMODE_WRITE:
976 nfs4_state_set_mode_locked(state, state->state | fmode);
979 static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode)
981 if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0)
982 nfs4_stateid_copy(&state->stateid, stateid);
983 nfs4_stateid_copy(&state->open_stateid, stateid);
984 set_bit(NFS_OPEN_STATE, &state->flags);
987 set_bit(NFS_O_RDONLY_STATE, &state->flags);
990 set_bit(NFS_O_WRONLY_STATE, &state->flags);
992 case FMODE_READ|FMODE_WRITE:
993 set_bit(NFS_O_RDWR_STATE, &state->flags);
997 static void nfs_set_open_stateid(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode)
999 write_seqlock(&state->seqlock);
1000 nfs_set_open_stateid_locked(state, stateid, fmode);
1001 write_sequnlock(&state->seqlock);
1004 static void __update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, const nfs4_stateid *deleg_stateid, fmode_t fmode)
1007 * Protect the call to nfs4_state_set_mode_locked and
1008 * serialise the stateid update
1010 write_seqlock(&state->seqlock);
1011 if (deleg_stateid != NULL) {
1012 nfs4_stateid_copy(&state->stateid, deleg_stateid);
1013 set_bit(NFS_DELEGATED_STATE, &state->flags);
1015 if (open_stateid != NULL)
1016 nfs_set_open_stateid_locked(state, open_stateid, fmode);
1017 write_sequnlock(&state->seqlock);
1018 spin_lock(&state->owner->so_lock);
1019 update_open_stateflags(state, fmode);
1020 spin_unlock(&state->owner->so_lock);
1023 static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, nfs4_stateid *delegation, fmode_t fmode)
1025 struct nfs_inode *nfsi = NFS_I(state->inode);
1026 struct nfs_delegation *deleg_cur;
1029 fmode &= (FMODE_READ|FMODE_WRITE);
1032 deleg_cur = rcu_dereference(nfsi->delegation);
1033 if (deleg_cur == NULL)
1036 spin_lock(&deleg_cur->lock);
1037 if (nfsi->delegation != deleg_cur ||
1038 test_bit(NFS_DELEGATION_RETURNING, &deleg_cur->flags) ||
1039 (deleg_cur->type & fmode) != fmode)
1040 goto no_delegation_unlock;
1042 if (delegation == NULL)
1043 delegation = &deleg_cur->stateid;
1044 else if (!nfs4_stateid_match(&deleg_cur->stateid, delegation))
1045 goto no_delegation_unlock;
1047 nfs_mark_delegation_referenced(deleg_cur);
1048 __update_open_stateid(state, open_stateid, &deleg_cur->stateid, fmode);
1050 no_delegation_unlock:
1051 spin_unlock(&deleg_cur->lock);
1055 if (!ret && open_stateid != NULL) {
1056 __update_open_stateid(state, open_stateid, NULL, fmode);
1064 static void nfs4_return_incompatible_delegation(struct inode *inode, fmode_t fmode)
1066 struct nfs_delegation *delegation;
1069 delegation = rcu_dereference(NFS_I(inode)->delegation);
1070 if (delegation == NULL || (delegation->type & fmode) == fmode) {
1075 nfs4_inode_return_delegation(inode);
1078 static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata)
1080 struct nfs4_state *state = opendata->state;
1081 struct nfs_inode *nfsi = NFS_I(state->inode);
1082 struct nfs_delegation *delegation;
1083 int open_mode = opendata->o_arg.open_flags;
1084 fmode_t fmode = opendata->o_arg.fmode;
1085 nfs4_stateid stateid;
1089 if (can_open_cached(state, fmode, open_mode)) {
1090 spin_lock(&state->owner->so_lock);
1091 if (can_open_cached(state, fmode, open_mode)) {
1092 update_open_stateflags(state, fmode);
1093 spin_unlock(&state->owner->so_lock);
1094 goto out_return_state;
1096 spin_unlock(&state->owner->so_lock);
1099 delegation = rcu_dereference(nfsi->delegation);
1100 if (!can_open_delegated(delegation, fmode)) {
1104 /* Save the delegation */
1105 nfs4_stateid_copy(&stateid, &delegation->stateid);
1107 nfs_release_seqid(opendata->o_arg.seqid);
1108 if (!opendata->is_recover) {
1109 ret = nfs_may_open(state->inode, state->owner->so_cred, open_mode);
1115 /* Try to update the stateid using the delegation */
1116 if (update_open_stateid(state, NULL, &stateid, fmode))
1117 goto out_return_state;
1120 return ERR_PTR(ret);
1122 atomic_inc(&state->count);
1127 nfs4_opendata_check_deleg(struct nfs4_opendata *data, struct nfs4_state *state)
1129 struct nfs_client *clp = NFS_SERVER(state->inode)->nfs_client;
1130 struct nfs_delegation *delegation;
1131 int delegation_flags = 0;
1134 delegation = rcu_dereference(NFS_I(state->inode)->delegation);
1136 delegation_flags = delegation->flags;
1138 if (data->o_arg.claim == NFS4_OPEN_CLAIM_DELEGATE_CUR) {
1139 pr_err_ratelimited("NFS: Broken NFSv4 server %s is "
1140 "returning a delegation for "
1141 "OPEN(CLAIM_DELEGATE_CUR)\n",
1143 } else if ((delegation_flags & 1UL<<NFS_DELEGATION_NEED_RECLAIM) == 0)
1144 nfs_inode_set_delegation(state->inode,
1145 data->owner->so_cred,
1148 nfs_inode_reclaim_delegation(state->inode,
1149 data->owner->so_cred,
1154 * Check the inode attributes against the CLAIM_PREVIOUS returned attributes
1155 * and update the nfs4_state.
1157 static struct nfs4_state *
1158 _nfs4_opendata_reclaim_to_nfs4_state(struct nfs4_opendata *data)
1160 struct inode *inode = data->state->inode;
1161 struct nfs4_state *state = data->state;
1164 if (!data->rpc_done) {
1165 ret = data->rpc_status;
1170 if (!(data->f_attr.valid & NFS_ATTR_FATTR_TYPE) ||
1171 !(data->f_attr.valid & NFS_ATTR_FATTR_FILEID) ||
1172 !(data->f_attr.valid & NFS_ATTR_FATTR_CHANGE))
1176 state = nfs4_get_open_state(inode, data->owner);
1180 ret = nfs_refresh_inode(inode, &data->f_attr);
1184 if (data->o_res.delegation_type != 0)
1185 nfs4_opendata_check_deleg(data, state);
1186 update_open_stateid(state, &data->o_res.stateid, NULL,
1191 return ERR_PTR(ret);
1195 static struct nfs4_state *
1196 _nfs4_opendata_to_nfs4_state(struct nfs4_opendata *data)
1198 struct inode *inode;
1199 struct nfs4_state *state = NULL;
1202 if (!data->rpc_done) {
1203 state = nfs4_try_open_cached(data);
1208 if (!(data->f_attr.valid & NFS_ATTR_FATTR))
1210 inode = nfs_fhget(data->dir->d_sb, &data->o_res.fh, &data->f_attr);
1211 ret = PTR_ERR(inode);
1215 state = nfs4_get_open_state(inode, data->owner);
1218 if (data->o_res.delegation_type != 0)
1219 nfs4_opendata_check_deleg(data, state);
1220 update_open_stateid(state, &data->o_res.stateid, NULL,
1224 nfs_release_seqid(data->o_arg.seqid);
1229 return ERR_PTR(ret);
1232 static struct nfs4_state *
1233 nfs4_opendata_to_nfs4_state(struct nfs4_opendata *data)
1235 if (data->o_arg.claim == NFS4_OPEN_CLAIM_PREVIOUS)
1236 return _nfs4_opendata_reclaim_to_nfs4_state(data);
1237 return _nfs4_opendata_to_nfs4_state(data);
1240 static struct nfs_open_context *nfs4_state_find_open_context(struct nfs4_state *state)
1242 struct nfs_inode *nfsi = NFS_I(state->inode);
1243 struct nfs_open_context *ctx;
1245 spin_lock(&state->inode->i_lock);
1246 list_for_each_entry(ctx, &nfsi->open_files, list) {
1247 if (ctx->state != state)
1249 get_nfs_open_context(ctx);
1250 spin_unlock(&state->inode->i_lock);
1253 spin_unlock(&state->inode->i_lock);
1254 return ERR_PTR(-ENOENT);
1257 static struct nfs4_opendata *nfs4_open_recoverdata_alloc(struct nfs_open_context *ctx,
1258 struct nfs4_state *state, enum open_claim_type4 claim)
1260 struct nfs4_opendata *opendata;
1262 opendata = nfs4_opendata_alloc(ctx->dentry, state->owner, 0, 0,
1263 NULL, claim, GFP_NOFS);
1264 if (opendata == NULL)
1265 return ERR_PTR(-ENOMEM);
1266 opendata->state = state;
1267 atomic_inc(&state->count);
1271 static int nfs4_open_recover_helper(struct nfs4_opendata *opendata, fmode_t fmode, struct nfs4_state **res)
1273 struct nfs4_state *newstate;
1276 opendata->o_arg.open_flags = 0;
1277 opendata->o_arg.fmode = fmode;
1278 memset(&opendata->o_res, 0, sizeof(opendata->o_res));
1279 memset(&opendata->c_res, 0, sizeof(opendata->c_res));
1280 nfs4_init_opendata_res(opendata);
1281 ret = _nfs4_recover_proc_open(opendata);
1284 newstate = nfs4_opendata_to_nfs4_state(opendata);
1285 if (IS_ERR(newstate))
1286 return PTR_ERR(newstate);
1287 nfs4_close_state(newstate, fmode);
1292 static int nfs4_open_recover(struct nfs4_opendata *opendata, struct nfs4_state *state)
1294 struct nfs4_state *newstate;
1297 /* memory barrier prior to reading state->n_* */
1298 clear_bit(NFS_DELEGATED_STATE, &state->flags);
1299 clear_bit(NFS_OPEN_STATE, &state->flags);
1301 if (state->n_rdwr != 0) {
1302 clear_bit(NFS_O_RDWR_STATE, &state->flags);
1303 ret = nfs4_open_recover_helper(opendata, FMODE_READ|FMODE_WRITE, &newstate);
1306 if (newstate != state)
1309 if (state->n_wronly != 0) {
1310 clear_bit(NFS_O_WRONLY_STATE, &state->flags);
1311 ret = nfs4_open_recover_helper(opendata, FMODE_WRITE, &newstate);
1314 if (newstate != state)
1317 if (state->n_rdonly != 0) {
1318 clear_bit(NFS_O_RDONLY_STATE, &state->flags);
1319 ret = nfs4_open_recover_helper(opendata, FMODE_READ, &newstate);
1322 if (newstate != state)
1326 * We may have performed cached opens for all three recoveries.
1327 * Check if we need to update the current stateid.
1329 if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0 &&
1330 !nfs4_stateid_match(&state->stateid, &state->open_stateid)) {
1331 write_seqlock(&state->seqlock);
1332 if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0)
1333 nfs4_stateid_copy(&state->stateid, &state->open_stateid);
1334 write_sequnlock(&state->seqlock);
1341 * reclaim state on the server after a reboot.
1343 static int _nfs4_do_open_reclaim(struct nfs_open_context *ctx, struct nfs4_state *state)
1345 struct nfs_delegation *delegation;
1346 struct nfs4_opendata *opendata;
1347 fmode_t delegation_type = 0;
1350 opendata = nfs4_open_recoverdata_alloc(ctx, state,
1351 NFS4_OPEN_CLAIM_PREVIOUS);
1352 if (IS_ERR(opendata))
1353 return PTR_ERR(opendata);
1355 delegation = rcu_dereference(NFS_I(state->inode)->delegation);
1356 if (delegation != NULL && test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags) != 0)
1357 delegation_type = delegation->type;
1359 opendata->o_arg.u.delegation_type = delegation_type;
1360 status = nfs4_open_recover(opendata, state);
1361 nfs4_opendata_put(opendata);
1365 static int nfs4_do_open_reclaim(struct nfs_open_context *ctx, struct nfs4_state *state)
1367 struct nfs_server *server = NFS_SERVER(state->inode);
1368 struct nfs4_exception exception = { };
1371 err = _nfs4_do_open_reclaim(ctx, state);
1372 if (nfs4_clear_cap_atomic_open_v1(server, err, &exception))
1374 if (err != -NFS4ERR_DELAY)
1376 nfs4_handle_exception(server, err, &exception);
1377 } while (exception.retry);
1381 static int nfs4_open_reclaim(struct nfs4_state_owner *sp, struct nfs4_state *state)
1383 struct nfs_open_context *ctx;
1386 ctx = nfs4_state_find_open_context(state);
1389 ret = nfs4_do_open_reclaim(ctx, state);
1390 put_nfs_open_context(ctx);
1394 static int nfs4_handle_delegation_recall_error(struct nfs_server *server, struct nfs4_state *state, const nfs4_stateid *stateid, int err)
1398 printk(KERN_ERR "NFS: %s: unhandled error "
1399 "%d.\n", __func__, err);
1404 case -NFS4ERR_BADSESSION:
1405 case -NFS4ERR_BADSLOT:
1406 case -NFS4ERR_BAD_HIGH_SLOT:
1407 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION:
1408 case -NFS4ERR_DEADSESSION:
1409 set_bit(NFS_DELEGATED_STATE, &state->flags);
1410 nfs4_schedule_session_recovery(server->nfs_client->cl_session, err);
1412 case -NFS4ERR_STALE_CLIENTID:
1413 case -NFS4ERR_STALE_STATEID:
1414 set_bit(NFS_DELEGATED_STATE, &state->flags);
1415 case -NFS4ERR_EXPIRED:
1416 /* Don't recall a delegation if it was lost */
1417 nfs4_schedule_lease_recovery(server->nfs_client);
1419 case -NFS4ERR_DELEG_REVOKED:
1420 case -NFS4ERR_ADMIN_REVOKED:
1421 case -NFS4ERR_BAD_STATEID:
1422 case -NFS4ERR_OPENMODE:
1423 nfs_inode_find_state_and_recover(state->inode,
1425 nfs4_schedule_stateid_recovery(server, state);
1427 case -NFS4ERR_DELAY:
1428 case -NFS4ERR_GRACE:
1429 set_bit(NFS_DELEGATED_STATE, &state->flags);
1433 case -NFS4ERR_DENIED:
1434 /* kill_proc(fl->fl_pid, SIGLOST, 1); */
1440 int nfs4_open_delegation_recall(struct nfs_open_context *ctx, struct nfs4_state *state, const nfs4_stateid *stateid)
1442 struct nfs_server *server = NFS_SERVER(state->inode);
1443 struct nfs4_opendata *opendata;
1446 opendata = nfs4_open_recoverdata_alloc(ctx, state,
1447 NFS4_OPEN_CLAIM_DELEG_CUR_FH);
1448 if (IS_ERR(opendata))
1449 return PTR_ERR(opendata);
1450 nfs4_stateid_copy(&opendata->o_arg.u.delegation, stateid);
1451 err = nfs4_open_recover(opendata, state);
1452 nfs4_opendata_put(opendata);
1453 return nfs4_handle_delegation_recall_error(server, state, stateid, err);
1456 static void nfs4_open_confirm_done(struct rpc_task *task, void *calldata)
1458 struct nfs4_opendata *data = calldata;
1460 data->rpc_status = task->tk_status;
1461 if (data->rpc_status == 0) {
1462 nfs4_stateid_copy(&data->o_res.stateid, &data->c_res.stateid);
1463 nfs_confirm_seqid(&data->owner->so_seqid, 0);
1464 renew_lease(data->o_res.server, data->timestamp);
1469 static void nfs4_open_confirm_release(void *calldata)
1471 struct nfs4_opendata *data = calldata;
1472 struct nfs4_state *state = NULL;
1474 /* If this request hasn't been cancelled, do nothing */
1475 if (data->cancelled == 0)
1477 /* In case of error, no cleanup! */
1478 if (!data->rpc_done)
1480 state = nfs4_opendata_to_nfs4_state(data);
1482 nfs4_close_state(state, data->o_arg.fmode);
1484 nfs4_opendata_put(data);
1487 static const struct rpc_call_ops nfs4_open_confirm_ops = {
1488 .rpc_call_done = nfs4_open_confirm_done,
1489 .rpc_release = nfs4_open_confirm_release,
1493 * Note: On error, nfs4_proc_open_confirm will free the struct nfs4_opendata
1495 static int _nfs4_proc_open_confirm(struct nfs4_opendata *data)
1497 struct nfs_server *server = NFS_SERVER(data->dir->d_inode);
1498 struct rpc_task *task;
1499 struct rpc_message msg = {
1500 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_CONFIRM],
1501 .rpc_argp = &data->c_arg,
1502 .rpc_resp = &data->c_res,
1503 .rpc_cred = data->owner->so_cred,
1505 struct rpc_task_setup task_setup_data = {
1506 .rpc_client = server->client,
1507 .rpc_message = &msg,
1508 .callback_ops = &nfs4_open_confirm_ops,
1509 .callback_data = data,
1510 .workqueue = nfsiod_workqueue,
1511 .flags = RPC_TASK_ASYNC,
1515 kref_get(&data->kref);
1517 data->rpc_status = 0;
1518 data->timestamp = jiffies;
1519 task = rpc_run_task(&task_setup_data);
1521 return PTR_ERR(task);
1522 status = nfs4_wait_for_completion_rpc_task(task);
1524 data->cancelled = 1;
1527 status = data->rpc_status;
1532 static void nfs4_open_prepare(struct rpc_task *task, void *calldata)
1534 struct nfs4_opendata *data = calldata;
1535 struct nfs4_state_owner *sp = data->owner;
1536 struct nfs_client *clp = sp->so_server->nfs_client;
1538 if (nfs_wait_on_sequence(data->o_arg.seqid, task) != 0)
1541 * Check if we still need to send an OPEN call, or if we can use
1542 * a delegation instead.
1544 if (data->state != NULL) {
1545 struct nfs_delegation *delegation;
1547 if (can_open_cached(data->state, data->o_arg.fmode, data->o_arg.open_flags))
1550 delegation = rcu_dereference(NFS_I(data->state->inode)->delegation);
1551 if (data->o_arg.claim != NFS4_OPEN_CLAIM_DELEGATE_CUR &&
1552 data->o_arg.claim != NFS4_OPEN_CLAIM_DELEG_CUR_FH &&
1553 can_open_delegated(delegation, data->o_arg.fmode))
1554 goto unlock_no_action;
1557 /* Update client id. */
1558 data->o_arg.clientid = clp->cl_clientid;
1559 switch (data->o_arg.claim) {
1560 case NFS4_OPEN_CLAIM_PREVIOUS:
1561 case NFS4_OPEN_CLAIM_DELEG_CUR_FH:
1562 case NFS4_OPEN_CLAIM_DELEG_PREV_FH:
1563 data->o_arg.open_bitmap = &nfs4_open_noattr_bitmap[0];
1564 case NFS4_OPEN_CLAIM_FH:
1565 task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_NOATTR];
1566 nfs_copy_fh(&data->o_res.fh, data->o_arg.fh);
1568 data->timestamp = jiffies;
1569 if (nfs4_setup_sequence(data->o_arg.server,
1570 &data->o_arg.seq_args,
1571 &data->o_res.seq_res,
1573 nfs_release_seqid(data->o_arg.seqid);
1575 /* Set the create mode (note dependency on the session type) */
1576 data->o_arg.createmode = NFS4_CREATE_UNCHECKED;
1577 if (data->o_arg.open_flags & O_EXCL) {
1578 data->o_arg.createmode = NFS4_CREATE_EXCLUSIVE;
1579 if (nfs4_has_persistent_session(clp))
1580 data->o_arg.createmode = NFS4_CREATE_GUARDED;
1581 else if (clp->cl_mvops->minor_version > 0)
1582 data->o_arg.createmode = NFS4_CREATE_EXCLUSIVE4_1;
1588 task->tk_action = NULL;
1590 nfs4_sequence_done(task, &data->o_res.seq_res);
1593 static void nfs4_open_done(struct rpc_task *task, void *calldata)
1595 struct nfs4_opendata *data = calldata;
1597 data->rpc_status = task->tk_status;
1599 if (!nfs4_sequence_done(task, &data->o_res.seq_res))
1602 if (task->tk_status == 0) {
1603 if (data->o_res.f_attr->valid & NFS_ATTR_FATTR_TYPE) {
1604 switch (data->o_res.f_attr->mode & S_IFMT) {
1608 data->rpc_status = -ELOOP;
1611 data->rpc_status = -EISDIR;
1614 data->rpc_status = -ENOTDIR;
1617 renew_lease(data->o_res.server, data->timestamp);
1618 if (!(data->o_res.rflags & NFS4_OPEN_RESULT_CONFIRM))
1619 nfs_confirm_seqid(&data->owner->so_seqid, 0);
1624 static void nfs4_open_release(void *calldata)
1626 struct nfs4_opendata *data = calldata;
1627 struct nfs4_state *state = NULL;
1629 /* If this request hasn't been cancelled, do nothing */
1630 if (data->cancelled == 0)
1632 /* In case of error, no cleanup! */
1633 if (data->rpc_status != 0 || !data->rpc_done)
1635 /* In case we need an open_confirm, no cleanup! */
1636 if (data->o_res.rflags & NFS4_OPEN_RESULT_CONFIRM)
1638 state = nfs4_opendata_to_nfs4_state(data);
1640 nfs4_close_state(state, data->o_arg.fmode);
1642 nfs4_opendata_put(data);
1645 static const struct rpc_call_ops nfs4_open_ops = {
1646 .rpc_call_prepare = nfs4_open_prepare,
1647 .rpc_call_done = nfs4_open_done,
1648 .rpc_release = nfs4_open_release,
1651 static int nfs4_run_open_task(struct nfs4_opendata *data, int isrecover)
1653 struct inode *dir = data->dir->d_inode;
1654 struct nfs_server *server = NFS_SERVER(dir);
1655 struct nfs_openargs *o_arg = &data->o_arg;
1656 struct nfs_openres *o_res = &data->o_res;
1657 struct rpc_task *task;
1658 struct rpc_message msg = {
1659 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN],
1662 .rpc_cred = data->owner->so_cred,
1664 struct rpc_task_setup task_setup_data = {
1665 .rpc_client = server->client,
1666 .rpc_message = &msg,
1667 .callback_ops = &nfs4_open_ops,
1668 .callback_data = data,
1669 .workqueue = nfsiod_workqueue,
1670 .flags = RPC_TASK_ASYNC,
1674 nfs41_init_sequence(&o_arg->seq_args, &o_res->seq_res, 1);
1675 kref_get(&data->kref);
1677 data->rpc_status = 0;
1678 data->cancelled = 0;
1679 data->is_recover = 0;
1681 nfs4_set_sequence_privileged(&o_arg->seq_args);
1682 data->is_recover = 1;
1684 task = rpc_run_task(&task_setup_data);
1686 return PTR_ERR(task);
1687 status = nfs4_wait_for_completion_rpc_task(task);
1689 data->cancelled = 1;
1692 status = data->rpc_status;
1698 static int _nfs4_recover_proc_open(struct nfs4_opendata *data)
1700 struct inode *dir = data->dir->d_inode;
1701 struct nfs_openres *o_res = &data->o_res;
1704 status = nfs4_run_open_task(data, 1);
1705 if (status != 0 || !data->rpc_done)
1708 nfs_fattr_map_and_free_names(NFS_SERVER(dir), &data->f_attr);
1710 if (o_res->rflags & NFS4_OPEN_RESULT_CONFIRM) {
1711 status = _nfs4_proc_open_confirm(data);
1719 static int nfs4_opendata_access(struct rpc_cred *cred,
1720 struct nfs4_opendata *opendata,
1721 struct nfs4_state *state, fmode_t fmode,
1724 struct nfs_access_entry cache;
1727 /* access call failed or for some reason the server doesn't
1728 * support any access modes -- defer access call until later */
1729 if (opendata->o_res.access_supported == 0)
1733 /* don't check MAY_WRITE - a newly created file may not have
1734 * write mode bits, but POSIX allows the creating process to write.
1735 * use openflags to check for exec, because fmode won't
1736 * always have FMODE_EXEC set when file open for exec. */
1737 if (openflags & __FMODE_EXEC) {
1738 /* ONLY check for exec rights */
1740 } else if (fmode & FMODE_READ)
1744 cache.jiffies = jiffies;
1745 nfs_access_set_mask(&cache, opendata->o_res.access_result);
1746 nfs_access_add_cache(state->inode, &cache);
1748 if ((mask & ~cache.mask & (MAY_READ | MAY_EXEC)) == 0)
1751 /* even though OPEN succeeded, access is denied. Close the file */
1752 nfs4_close_state(state, fmode);
1757 * Note: On error, nfs4_proc_open will free the struct nfs4_opendata
1759 static int _nfs4_proc_open(struct nfs4_opendata *data)
1761 struct inode *dir = data->dir->d_inode;
1762 struct nfs_server *server = NFS_SERVER(dir);
1763 struct nfs_openargs *o_arg = &data->o_arg;
1764 struct nfs_openres *o_res = &data->o_res;
1767 status = nfs4_run_open_task(data, 0);
1768 if (!data->rpc_done)
1771 if (status == -NFS4ERR_BADNAME &&
1772 !(o_arg->open_flags & O_CREAT))
1777 nfs_fattr_map_and_free_names(server, &data->f_attr);
1779 if (o_arg->open_flags & O_CREAT)
1780 update_changeattr(dir, &o_res->cinfo);
1781 if ((o_res->rflags & NFS4_OPEN_RESULT_LOCKTYPE_POSIX) == 0)
1782 server->caps &= ~NFS_CAP_POSIX_LOCK;
1783 if(o_res->rflags & NFS4_OPEN_RESULT_CONFIRM) {
1784 status = _nfs4_proc_open_confirm(data);
1788 if (!(o_res->f_attr->valid & NFS_ATTR_FATTR))
1789 _nfs4_proc_getattr(server, &o_res->fh, o_res->f_attr);
1793 static int nfs4_recover_expired_lease(struct nfs_server *server)
1795 return nfs4_client_recover_expired_lease(server->nfs_client);
1800 * reclaim state on the server after a network partition.
1801 * Assumes caller holds the appropriate lock
1803 static int _nfs4_open_expired(struct nfs_open_context *ctx, struct nfs4_state *state)
1805 struct nfs4_opendata *opendata;
1808 opendata = nfs4_open_recoverdata_alloc(ctx, state,
1809 NFS4_OPEN_CLAIM_FH);
1810 if (IS_ERR(opendata))
1811 return PTR_ERR(opendata);
1812 ret = nfs4_open_recover(opendata, state);
1814 d_drop(ctx->dentry);
1815 nfs4_opendata_put(opendata);
1819 static int nfs4_do_open_expired(struct nfs_open_context *ctx, struct nfs4_state *state)
1821 struct nfs_server *server = NFS_SERVER(state->inode);
1822 struct nfs4_exception exception = { };
1826 err = _nfs4_open_expired(ctx, state);
1827 if (nfs4_clear_cap_atomic_open_v1(server, err, &exception))
1832 case -NFS4ERR_GRACE:
1833 case -NFS4ERR_DELAY:
1834 nfs4_handle_exception(server, err, &exception);
1837 } while (exception.retry);
1842 static int nfs4_open_expired(struct nfs4_state_owner *sp, struct nfs4_state *state)
1844 struct nfs_open_context *ctx;
1847 ctx = nfs4_state_find_open_context(state);
1850 ret = nfs4_do_open_expired(ctx, state);
1851 put_nfs_open_context(ctx);
1855 #if defined(CONFIG_NFS_V4_1)
1856 static void nfs41_clear_delegation_stateid(struct nfs4_state *state)
1858 struct nfs_server *server = NFS_SERVER(state->inode);
1859 nfs4_stateid *stateid = &state->stateid;
1860 struct nfs_delegation *delegation;
1861 struct rpc_cred *cred = NULL;
1862 int status = -NFS4ERR_BAD_STATEID;
1864 /* If a state reset has been done, test_stateid is unneeded */
1865 if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0)
1868 /* Get the delegation credential for use by test/free_stateid */
1870 delegation = rcu_dereference(NFS_I(state->inode)->delegation);
1871 if (delegation != NULL &&
1872 nfs4_stateid_match(&delegation->stateid, stateid)) {
1873 cred = get_rpccred(delegation->cred);
1875 status = nfs41_test_stateid(server, stateid, cred);
1879 if (status != NFS_OK) {
1880 /* Free the stateid unless the server explicitly
1881 * informs us the stateid is unrecognized. */
1882 if (status != -NFS4ERR_BAD_STATEID)
1883 nfs41_free_stateid(server, stateid, cred);
1884 nfs_remove_bad_delegation(state->inode);
1886 write_seqlock(&state->seqlock);
1887 nfs4_stateid_copy(&state->stateid, &state->open_stateid);
1888 write_sequnlock(&state->seqlock);
1889 clear_bit(NFS_DELEGATED_STATE, &state->flags);
1897 * nfs41_check_open_stateid - possibly free an open stateid
1899 * @state: NFSv4 state for an inode
1901 * Returns NFS_OK if recovery for this stateid is now finished.
1902 * Otherwise a negative NFS4ERR value is returned.
1904 static int nfs41_check_open_stateid(struct nfs4_state *state)
1906 struct nfs_server *server = NFS_SERVER(state->inode);
1907 nfs4_stateid *stateid = &state->open_stateid;
1908 struct rpc_cred *cred = state->owner->so_cred;
1911 /* If a state reset has been done, test_stateid is unneeded */
1912 if ((test_bit(NFS_O_RDONLY_STATE, &state->flags) == 0) &&
1913 (test_bit(NFS_O_WRONLY_STATE, &state->flags) == 0) &&
1914 (test_bit(NFS_O_RDWR_STATE, &state->flags) == 0))
1915 return -NFS4ERR_BAD_STATEID;
1917 status = nfs41_test_stateid(server, stateid, cred);
1918 if (status != NFS_OK) {
1919 /* Free the stateid unless the server explicitly
1920 * informs us the stateid is unrecognized. */
1921 if (status != -NFS4ERR_BAD_STATEID)
1922 nfs41_free_stateid(server, stateid, cred);
1924 clear_bit(NFS_O_RDONLY_STATE, &state->flags);
1925 clear_bit(NFS_O_WRONLY_STATE, &state->flags);
1926 clear_bit(NFS_O_RDWR_STATE, &state->flags);
1927 clear_bit(NFS_OPEN_STATE, &state->flags);
1932 static int nfs41_open_expired(struct nfs4_state_owner *sp, struct nfs4_state *state)
1936 nfs41_clear_delegation_stateid(state);
1937 status = nfs41_check_open_stateid(state);
1938 if (status != NFS_OK)
1939 status = nfs4_open_expired(sp, state);
1945 * on an EXCLUSIVE create, the server should send back a bitmask with FATTR4-*
1946 * fields corresponding to attributes that were used to store the verifier.
1947 * Make sure we clobber those fields in the later setattr call
1949 static inline void nfs4_exclusive_attrset(struct nfs4_opendata *opendata, struct iattr *sattr)
1951 if ((opendata->o_res.attrset[1] & FATTR4_WORD1_TIME_ACCESS) &&
1952 !(sattr->ia_valid & ATTR_ATIME_SET))
1953 sattr->ia_valid |= ATTR_ATIME;
1955 if ((opendata->o_res.attrset[1] & FATTR4_WORD1_TIME_MODIFY) &&
1956 !(sattr->ia_valid & ATTR_MTIME_SET))
1957 sattr->ia_valid |= ATTR_MTIME;
1960 static int _nfs4_open_and_get_state(struct nfs4_opendata *opendata,
1963 struct nfs4_state **res)
1965 struct nfs4_state_owner *sp = opendata->owner;
1966 struct nfs_server *server = sp->so_server;
1967 struct nfs4_state *state;
1971 seq = raw_seqcount_begin(&sp->so_reclaim_seqcount);
1973 ret = _nfs4_proc_open(opendata);
1977 state = nfs4_opendata_to_nfs4_state(opendata);
1978 ret = PTR_ERR(state);
1981 if (server->caps & NFS_CAP_POSIX_LOCK)
1982 set_bit(NFS_STATE_POSIX_LOCKS, &state->flags);
1984 ret = nfs4_opendata_access(sp->so_cred, opendata, state, fmode, flags);
1988 if (read_seqcount_retry(&sp->so_reclaim_seqcount, seq))
1989 nfs4_schedule_stateid_recovery(server, state);
1996 * Returns a referenced nfs4_state
1998 static int _nfs4_do_open(struct inode *dir,
1999 struct dentry *dentry,
2002 struct iattr *sattr,
2003 struct rpc_cred *cred,
2004 struct nfs4_state **res,
2005 struct nfs4_threshold **ctx_th)
2007 struct nfs4_state_owner *sp;
2008 struct nfs4_state *state = NULL;
2009 struct nfs_server *server = NFS_SERVER(dir);
2010 struct nfs4_opendata *opendata;
2011 enum open_claim_type4 claim = NFS4_OPEN_CLAIM_NULL;
2014 /* Protect against reboot recovery conflicts */
2016 sp = nfs4_get_state_owner(server, cred, GFP_KERNEL);
2018 dprintk("nfs4_do_open: nfs4_get_state_owner failed!\n");
2021 status = nfs4_recover_expired_lease(server);
2023 goto err_put_state_owner;
2024 if (dentry->d_inode != NULL)
2025 nfs4_return_incompatible_delegation(dentry->d_inode, fmode);
2027 if (dentry->d_inode)
2028 claim = NFS4_OPEN_CLAIM_FH;
2029 opendata = nfs4_opendata_alloc(dentry, sp, fmode, flags, sattr,
2031 if (opendata == NULL)
2032 goto err_put_state_owner;
2034 if (ctx_th && server->attr_bitmask[2] & FATTR4_WORD2_MDSTHRESHOLD) {
2035 opendata->f_attr.mdsthreshold = pnfs_mdsthreshold_alloc();
2036 if (!opendata->f_attr.mdsthreshold)
2037 goto err_opendata_put;
2038 opendata->o_arg.open_bitmap = &nfs4_pnfs_open_bitmap[0];
2040 if (dentry->d_inode != NULL)
2041 opendata->state = nfs4_get_open_state(dentry->d_inode, sp);
2043 status = _nfs4_open_and_get_state(opendata, fmode, flags, &state);
2045 goto err_opendata_put;
2047 if ((opendata->o_arg.open_flags & O_EXCL) &&
2048 (opendata->o_arg.createmode != NFS4_CREATE_GUARDED)) {
2049 nfs4_exclusive_attrset(opendata, sattr);
2051 nfs_fattr_init(opendata->o_res.f_attr);
2052 status = nfs4_do_setattr(state->inode, cred,
2053 opendata->o_res.f_attr, sattr,
2056 nfs_setattr_update_inode(state->inode, sattr);
2057 nfs_post_op_update_inode(state->inode, opendata->o_res.f_attr);
2060 if (pnfs_use_threshold(ctx_th, opendata->f_attr.mdsthreshold, server))
2061 *ctx_th = opendata->f_attr.mdsthreshold;
2063 kfree(opendata->f_attr.mdsthreshold);
2064 opendata->f_attr.mdsthreshold = NULL;
2066 nfs4_opendata_put(opendata);
2067 nfs4_put_state_owner(sp);
2071 kfree(opendata->f_attr.mdsthreshold);
2072 nfs4_opendata_put(opendata);
2073 err_put_state_owner:
2074 nfs4_put_state_owner(sp);
2081 static struct nfs4_state *nfs4_do_open(struct inode *dir,
2082 struct dentry *dentry,
2085 struct iattr *sattr,
2086 struct rpc_cred *cred,
2087 struct nfs4_threshold **ctx_th)
2089 struct nfs_server *server = NFS_SERVER(dir);
2090 struct nfs4_exception exception = { };
2091 struct nfs4_state *res;
2094 fmode &= FMODE_READ|FMODE_WRITE|FMODE_EXEC;
2096 status = _nfs4_do_open(dir, dentry, fmode, flags, sattr, cred,
2100 /* NOTE: BAD_SEQID means the server and client disagree about the
2101 * book-keeping w.r.t. state-changing operations
2102 * (OPEN/CLOSE/LOCK/LOCKU...)
2103 * It is actually a sign of a bug on the client or on the server.
2105 * If we receive a BAD_SEQID error in the particular case of
2106 * doing an OPEN, we assume that nfs_increment_open_seqid() will
2107 * have unhashed the old state_owner for us, and that we can
2108 * therefore safely retry using a new one. We should still warn
2109 * the user though...
2111 if (status == -NFS4ERR_BAD_SEQID) {
2112 pr_warn_ratelimited("NFS: v4 server %s "
2113 " returned a bad sequence-id error!\n",
2114 NFS_SERVER(dir)->nfs_client->cl_hostname);
2115 exception.retry = 1;
2119 * BAD_STATEID on OPEN means that the server cancelled our
2120 * state before it received the OPEN_CONFIRM.
2121 * Recover by retrying the request as per the discussion
2122 * on Page 181 of RFC3530.
2124 if (status == -NFS4ERR_BAD_STATEID) {
2125 exception.retry = 1;
2128 if (status == -EAGAIN) {
2129 /* We must have found a delegation */
2130 exception.retry = 1;
2133 if (nfs4_clear_cap_atomic_open_v1(server, status, &exception))
2135 res = ERR_PTR(nfs4_handle_exception(server,
2136 status, &exception));
2137 } while (exception.retry);
2141 static int _nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred,
2142 struct nfs_fattr *fattr, struct iattr *sattr,
2143 struct nfs4_state *state)
2145 struct nfs_server *server = NFS_SERVER(inode);
2146 struct nfs_setattrargs arg = {
2147 .fh = NFS_FH(inode),
2150 .bitmask = server->attr_bitmask,
2152 struct nfs_setattrres res = {
2156 struct rpc_message msg = {
2157 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETATTR],
2162 unsigned long timestamp = jiffies;
2167 nfs_fattr_init(fattr);
2169 /* Servers should only apply open mode checks for file size changes */
2170 truncate = (sattr->ia_valid & ATTR_SIZE) ? true : false;
2171 fmode = truncate ? FMODE_WRITE : FMODE_READ;
2173 if (nfs4_copy_delegation_stateid(&arg.stateid, inode, fmode)) {
2174 /* Use that stateid */
2175 } else if (truncate && state != NULL && nfs4_valid_open_stateid(state)) {
2176 struct nfs_lockowner lockowner = {
2177 .l_owner = current->files,
2178 .l_pid = current->tgid,
2180 nfs4_select_rw_stateid(&arg.stateid, state, FMODE_WRITE,
2183 nfs4_stateid_copy(&arg.stateid, &zero_stateid);
2185 status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1);
2186 if (status == 0 && state != NULL)
2187 renew_lease(server, timestamp);
2191 static int nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred,
2192 struct nfs_fattr *fattr, struct iattr *sattr,
2193 struct nfs4_state *state)
2195 struct nfs_server *server = NFS_SERVER(inode);
2196 struct nfs4_exception exception = {
2202 err = _nfs4_do_setattr(inode, cred, fattr, sattr, state);
2204 case -NFS4ERR_OPENMODE:
2205 if (!(sattr->ia_valid & ATTR_SIZE)) {
2206 pr_warn_once("NFSv4: server %s is incorrectly "
2207 "applying open mode checks to "
2208 "a SETATTR that is not "
2209 "changing file size.\n",
2210 server->nfs_client->cl_hostname);
2212 if (state && !(state->state & FMODE_WRITE)) {
2214 if (sattr->ia_valid & ATTR_OPEN)
2219 err = nfs4_handle_exception(server, err, &exception);
2220 } while (exception.retry);
2225 struct nfs4_closedata {
2226 struct inode *inode;
2227 struct nfs4_state *state;
2228 struct nfs_closeargs arg;
2229 struct nfs_closeres res;
2230 struct nfs_fattr fattr;
2231 unsigned long timestamp;
2236 static void nfs4_free_closedata(void *data)
2238 struct nfs4_closedata *calldata = data;
2239 struct nfs4_state_owner *sp = calldata->state->owner;
2240 struct super_block *sb = calldata->state->inode->i_sb;
2243 pnfs_roc_release(calldata->state->inode);
2244 nfs4_put_open_state(calldata->state);
2245 nfs_free_seqid(calldata->arg.seqid);
2246 nfs4_put_state_owner(sp);
2247 nfs_sb_deactive(sb);
2251 static void nfs4_close_clear_stateid_flags(struct nfs4_state *state,
2254 spin_lock(&state->owner->so_lock);
2255 clear_bit(NFS_O_RDWR_STATE, &state->flags);
2256 switch (fmode & (FMODE_READ|FMODE_WRITE)) {
2258 clear_bit(NFS_O_RDONLY_STATE, &state->flags);
2261 clear_bit(NFS_O_WRONLY_STATE, &state->flags);
2264 clear_bit(NFS_O_RDONLY_STATE, &state->flags);
2265 clear_bit(NFS_O_WRONLY_STATE, &state->flags);
2266 clear_bit(NFS_OPEN_STATE, &state->flags);
2268 spin_unlock(&state->owner->so_lock);
2271 static void nfs4_close_done(struct rpc_task *task, void *data)
2273 struct nfs4_closedata *calldata = data;
2274 struct nfs4_state *state = calldata->state;
2275 struct nfs_server *server = NFS_SERVER(calldata->inode);
2277 dprintk("%s: begin!\n", __func__);
2278 if (!nfs4_sequence_done(task, &calldata->res.seq_res))
2280 /* hmm. we are done with the inode, and in the process of freeing
2281 * the state_owner. we keep this around to process errors
2283 switch (task->tk_status) {
2286 pnfs_roc_set_barrier(state->inode,
2287 calldata->roc_barrier);
2288 nfs_set_open_stateid(state, &calldata->res.stateid, 0);
2289 renew_lease(server, calldata->timestamp);
2290 nfs4_close_clear_stateid_flags(state,
2291 calldata->arg.fmode);
2293 case -NFS4ERR_STALE_STATEID:
2294 case -NFS4ERR_OLD_STATEID:
2295 case -NFS4ERR_BAD_STATEID:
2296 case -NFS4ERR_EXPIRED:
2297 if (calldata->arg.fmode == 0)
2300 if (nfs4_async_handle_error(task, server, state) == -EAGAIN)
2301 rpc_restart_call_prepare(task);
2303 nfs_release_seqid(calldata->arg.seqid);
2304 nfs_refresh_inode(calldata->inode, calldata->res.fattr);
2305 dprintk("%s: done, ret = %d!\n", __func__, task->tk_status);
2308 static void nfs4_close_prepare(struct rpc_task *task, void *data)
2310 struct nfs4_closedata *calldata = data;
2311 struct nfs4_state *state = calldata->state;
2312 struct inode *inode = calldata->inode;
2315 dprintk("%s: begin!\n", __func__);
2316 if (nfs_wait_on_sequence(calldata->arg.seqid, task) != 0)
2319 task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_DOWNGRADE];
2320 calldata->arg.fmode = FMODE_READ|FMODE_WRITE;
2321 spin_lock(&state->owner->so_lock);
2322 /* Calculate the change in open mode */
2323 if (state->n_rdwr == 0) {
2324 if (state->n_rdonly == 0) {
2325 call_close |= test_bit(NFS_O_RDONLY_STATE, &state->flags);
2326 call_close |= test_bit(NFS_O_RDWR_STATE, &state->flags);
2327 calldata->arg.fmode &= ~FMODE_READ;
2329 if (state->n_wronly == 0) {
2330 call_close |= test_bit(NFS_O_WRONLY_STATE, &state->flags);
2331 call_close |= test_bit(NFS_O_RDWR_STATE, &state->flags);
2332 calldata->arg.fmode &= ~FMODE_WRITE;
2335 if (!nfs4_valid_open_stateid(state))
2337 spin_unlock(&state->owner->so_lock);
2340 /* Note: exit _without_ calling nfs4_close_done */
2344 if (calldata->arg.fmode == 0) {
2345 task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CLOSE];
2346 if (calldata->roc &&
2347 pnfs_roc_drain(inode, &calldata->roc_barrier, task)) {
2348 nfs_release_seqid(calldata->arg.seqid);
2353 nfs_fattr_init(calldata->res.fattr);
2354 calldata->timestamp = jiffies;
2355 if (nfs4_setup_sequence(NFS_SERVER(inode),
2356 &calldata->arg.seq_args,
2357 &calldata->res.seq_res,
2359 nfs_release_seqid(calldata->arg.seqid);
2360 dprintk("%s: done!\n", __func__);
2363 task->tk_action = NULL;
2365 nfs4_sequence_done(task, &calldata->res.seq_res);
2368 static const struct rpc_call_ops nfs4_close_ops = {
2369 .rpc_call_prepare = nfs4_close_prepare,
2370 .rpc_call_done = nfs4_close_done,
2371 .rpc_release = nfs4_free_closedata,
2375 * It is possible for data to be read/written from a mem-mapped file
2376 * after the sys_close call (which hits the vfs layer as a flush).
2377 * This means that we can't safely call nfsv4 close on a file until
2378 * the inode is cleared. This in turn means that we are not good
2379 * NFSv4 citizens - we do not indicate to the server to update the file's
2380 * share state even when we are done with one of the three share
2381 * stateid's in the inode.
2383 * NOTE: Caller must be holding the sp->so_owner semaphore!
2385 int nfs4_do_close(struct nfs4_state *state, gfp_t gfp_mask, int wait)
2387 struct nfs_server *server = NFS_SERVER(state->inode);
2388 struct nfs4_closedata *calldata;
2389 struct nfs4_state_owner *sp = state->owner;
2390 struct rpc_task *task;
2391 struct rpc_message msg = {
2392 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CLOSE],
2393 .rpc_cred = state->owner->so_cred,
2395 struct rpc_task_setup task_setup_data = {
2396 .rpc_client = server->client,
2397 .rpc_message = &msg,
2398 .callback_ops = &nfs4_close_ops,
2399 .workqueue = nfsiod_workqueue,
2400 .flags = RPC_TASK_ASYNC,
2402 int status = -ENOMEM;
2404 calldata = kzalloc(sizeof(*calldata), gfp_mask);
2405 if (calldata == NULL)
2407 nfs41_init_sequence(&calldata->arg.seq_args, &calldata->res.seq_res, 1);
2408 calldata->inode = state->inode;
2409 calldata->state = state;
2410 calldata->arg.fh = NFS_FH(state->inode);
2411 calldata->arg.stateid = &state->open_stateid;
2412 /* Serialization for the sequence id */
2413 calldata->arg.seqid = nfs_alloc_seqid(&state->owner->so_seqid, gfp_mask);
2414 if (calldata->arg.seqid == NULL)
2415 goto out_free_calldata;
2416 calldata->arg.fmode = 0;
2417 calldata->arg.bitmask = server->cache_consistency_bitmask;
2418 calldata->res.fattr = &calldata->fattr;
2419 calldata->res.seqid = calldata->arg.seqid;
2420 calldata->res.server = server;
2421 calldata->roc = pnfs_roc(state->inode);
2422 nfs_sb_active(calldata->inode->i_sb);
2424 msg.rpc_argp = &calldata->arg;
2425 msg.rpc_resp = &calldata->res;
2426 task_setup_data.callback_data = calldata;
2427 task = rpc_run_task(&task_setup_data);
2429 return PTR_ERR(task);
2432 status = rpc_wait_for_completion_task(task);
2438 nfs4_put_open_state(state);
2439 nfs4_put_state_owner(sp);
2443 static struct inode *
2444 nfs4_atomic_open(struct inode *dir, struct nfs_open_context *ctx, int open_flags, struct iattr *attr)
2446 struct nfs4_state *state;
2448 /* Protect against concurrent sillydeletes */
2449 state = nfs4_do_open(dir, ctx->dentry, ctx->mode, open_flags, attr,
2450 ctx->cred, &ctx->mdsthreshold);
2452 return ERR_CAST(state);
2454 return igrab(state->inode);
2457 static void nfs4_close_context(struct nfs_open_context *ctx, int is_sync)
2459 if (ctx->state == NULL)
2462 nfs4_close_sync(ctx->state, ctx->mode);
2464 nfs4_close_state(ctx->state, ctx->mode);
2467 static int _nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *fhandle)
2469 struct nfs4_server_caps_arg args = {
2472 struct nfs4_server_caps_res res = {};
2473 struct rpc_message msg = {
2474 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SERVER_CAPS],
2480 status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0);
2482 memcpy(server->attr_bitmask, res.attr_bitmask, sizeof(server->attr_bitmask));
2483 server->caps &= ~(NFS_CAP_ACLS|NFS_CAP_HARDLINKS|
2484 NFS_CAP_SYMLINKS|NFS_CAP_FILEID|
2485 NFS_CAP_MODE|NFS_CAP_NLINK|NFS_CAP_OWNER|
2486 NFS_CAP_OWNER_GROUP|NFS_CAP_ATIME|
2487 NFS_CAP_CTIME|NFS_CAP_MTIME);
2488 if (res.attr_bitmask[0] & FATTR4_WORD0_ACL)
2489 server->caps |= NFS_CAP_ACLS;
2490 if (res.has_links != 0)
2491 server->caps |= NFS_CAP_HARDLINKS;
2492 if (res.has_symlinks != 0)
2493 server->caps |= NFS_CAP_SYMLINKS;
2494 if (res.attr_bitmask[0] & FATTR4_WORD0_FILEID)
2495 server->caps |= NFS_CAP_FILEID;
2496 if (res.attr_bitmask[1] & FATTR4_WORD1_MODE)
2497 server->caps |= NFS_CAP_MODE;
2498 if (res.attr_bitmask[1] & FATTR4_WORD1_NUMLINKS)
2499 server->caps |= NFS_CAP_NLINK;
2500 if (res.attr_bitmask[1] & FATTR4_WORD1_OWNER)
2501 server->caps |= NFS_CAP_OWNER;
2502 if (res.attr_bitmask[1] & FATTR4_WORD1_OWNER_GROUP)
2503 server->caps |= NFS_CAP_OWNER_GROUP;
2504 if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_ACCESS)
2505 server->caps |= NFS_CAP_ATIME;
2506 if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_METADATA)
2507 server->caps |= NFS_CAP_CTIME;
2508 if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_MODIFY)
2509 server->caps |= NFS_CAP_MTIME;
2511 memcpy(server->cache_consistency_bitmask, res.attr_bitmask, sizeof(server->cache_consistency_bitmask));
2512 server->cache_consistency_bitmask[0] &= FATTR4_WORD0_CHANGE|FATTR4_WORD0_SIZE;
2513 server->cache_consistency_bitmask[1] &= FATTR4_WORD1_TIME_METADATA|FATTR4_WORD1_TIME_MODIFY;
2514 server->acl_bitmask = res.acl_bitmask;
2515 server->fh_expire_type = res.fh_expire_type;
2521 int nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *fhandle)
2523 struct nfs4_exception exception = { };
2526 err = nfs4_handle_exception(server,
2527 _nfs4_server_capabilities(server, fhandle),
2529 } while (exception.retry);
2533 static int _nfs4_lookup_root(struct nfs_server *server, struct nfs_fh *fhandle,
2534 struct nfs_fsinfo *info)
2536 struct nfs4_lookup_root_arg args = {
2537 .bitmask = nfs4_fattr_bitmap,
2539 struct nfs4_lookup_res res = {
2541 .fattr = info->fattr,
2544 struct rpc_message msg = {
2545 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOOKUP_ROOT],
2550 nfs_fattr_init(info->fattr);
2551 return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0);
2554 static int nfs4_lookup_root(struct nfs_server *server, struct nfs_fh *fhandle,
2555 struct nfs_fsinfo *info)
2557 struct nfs4_exception exception = { };
2560 err = _nfs4_lookup_root(server, fhandle, info);
2563 case -NFS4ERR_WRONGSEC:
2566 err = nfs4_handle_exception(server, err, &exception);
2568 } while (exception.retry);
2573 static int nfs4_lookup_root_sec(struct nfs_server *server, struct nfs_fh *fhandle,
2574 struct nfs_fsinfo *info, rpc_authflavor_t flavor)
2576 struct rpc_auth *auth;
2579 auth = rpcauth_create(flavor, server->client);
2584 ret = nfs4_lookup_root(server, fhandle, info);
2590 * Retry pseudoroot lookup with various security flavors. We do this when:
2592 * NFSv4.0: the PUTROOTFH operation returns NFS4ERR_WRONGSEC
2593 * NFSv4.1: the server does not support the SECINFO_NO_NAME operation
2595 * Returns zero on success, or a negative NFS4ERR value, or a
2596 * negative errno value.
2598 static int nfs4_find_root_sec(struct nfs_server *server, struct nfs_fh *fhandle,
2599 struct nfs_fsinfo *info)
2601 /* Per 3530bis 15.33.5 */
2602 static const rpc_authflavor_t flav_array[] = {
2606 RPC_AUTH_UNIX, /* courtesy */
2609 int status = -EPERM;
2612 for (i = 0; i < ARRAY_SIZE(flav_array); i++) {
2613 status = nfs4_lookup_root_sec(server, fhandle, info, flav_array[i]);
2614 if (status == -NFS4ERR_WRONGSEC || status == -EACCES)
2620 * -EACCESS could mean that the user doesn't have correct permissions
2621 * to access the mount. It could also mean that we tried to mount
2622 * with a gss auth flavor, but rpc.gssd isn't running. Either way,
2623 * existing mount programs don't handle -EACCES very well so it should
2624 * be mapped to -EPERM instead.
2626 if (status == -EACCES)
2631 static int nfs4_do_find_root_sec(struct nfs_server *server,
2632 struct nfs_fh *fhandle, struct nfs_fsinfo *info)
2634 int mv = server->nfs_client->cl_minorversion;
2635 return nfs_v4_minor_ops[mv]->find_root_sec(server, fhandle, info);
2639 * nfs4_proc_get_rootfh - get file handle for server's pseudoroot
2640 * @server: initialized nfs_server handle
2641 * @fhandle: we fill in the pseudo-fs root file handle
2642 * @info: we fill in an FSINFO struct
2644 * Returns zero on success, or a negative errno.
2646 int nfs4_proc_get_rootfh(struct nfs_server *server, struct nfs_fh *fhandle,
2647 struct nfs_fsinfo *info)
2651 status = nfs4_lookup_root(server, fhandle, info);
2652 if ((status == -NFS4ERR_WRONGSEC) &&
2653 !(server->flags & NFS_MOUNT_SECFLAVOUR))
2654 status = nfs4_do_find_root_sec(server, fhandle, info);
2657 status = nfs4_server_capabilities(server, fhandle);
2659 status = nfs4_do_fsinfo(server, fhandle, info);
2661 return nfs4_map_errors(status);
2664 static int nfs4_proc_get_root(struct nfs_server *server, struct nfs_fh *mntfh,
2665 struct nfs_fsinfo *info)
2668 struct nfs_fattr *fattr = info->fattr;
2670 error = nfs4_server_capabilities(server, mntfh);
2672 dprintk("nfs4_get_root: getcaps error = %d\n", -error);
2676 error = nfs4_proc_getattr(server, mntfh, fattr);
2678 dprintk("nfs4_get_root: getattr error = %d\n", -error);
2682 if (fattr->valid & NFS_ATTR_FATTR_FSID &&
2683 !nfs_fsid_equal(&server->fsid, &fattr->fsid))
2684 memcpy(&server->fsid, &fattr->fsid, sizeof(server->fsid));
2690 * Get locations and (maybe) other attributes of a referral.
2691 * Note that we'll actually follow the referral later when
2692 * we detect fsid mismatch in inode revalidation
2694 static int nfs4_get_referral(struct rpc_clnt *client, struct inode *dir,
2695 const struct qstr *name, struct nfs_fattr *fattr,
2696 struct nfs_fh *fhandle)
2698 int status = -ENOMEM;
2699 struct page *page = NULL;
2700 struct nfs4_fs_locations *locations = NULL;
2702 page = alloc_page(GFP_KERNEL);
2705 locations = kmalloc(sizeof(struct nfs4_fs_locations), GFP_KERNEL);
2706 if (locations == NULL)
2709 status = nfs4_proc_fs_locations(client, dir, name, locations, page);
2712 /* Make sure server returned a different fsid for the referral */
2713 if (nfs_fsid_equal(&NFS_SERVER(dir)->fsid, &locations->fattr.fsid)) {
2714 dprintk("%s: server did not return a different fsid for"
2715 " a referral at %s\n", __func__, name->name);
2719 /* Fixup attributes for the nfs_lookup() call to nfs_fhget() */
2720 nfs_fixup_referral_attributes(&locations->fattr);
2722 /* replace the lookup nfs_fattr with the locations nfs_fattr */
2723 memcpy(fattr, &locations->fattr, sizeof(struct nfs_fattr));
2724 memset(fhandle, 0, sizeof(struct nfs_fh));
2732 static int _nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fattr *fattr)
2734 struct nfs4_getattr_arg args = {
2736 .bitmask = server->attr_bitmask,
2738 struct nfs4_getattr_res res = {
2742 struct rpc_message msg = {
2743 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETATTR],
2748 nfs_fattr_init(fattr);
2749 return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0);
2752 static int nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fattr *fattr)
2754 struct nfs4_exception exception = { };
2757 err = nfs4_handle_exception(server,
2758 _nfs4_proc_getattr(server, fhandle, fattr),
2760 } while (exception.retry);
2765 * The file is not closed if it is opened due to the a request to change
2766 * the size of the file. The open call will not be needed once the
2767 * VFS layer lookup-intents are implemented.
2769 * Close is called when the inode is destroyed.
2770 * If we haven't opened the file for O_WRONLY, we
2771 * need to in the size_change case to obtain a stateid.
2774 * Because OPEN is always done by name in nfsv4, it is
2775 * possible that we opened a different file by the same
2776 * name. We can recognize this race condition, but we
2777 * can't do anything about it besides returning an error.
2779 * This will be fixed with VFS changes (lookup-intent).
2782 nfs4_proc_setattr(struct dentry *dentry, struct nfs_fattr *fattr,
2783 struct iattr *sattr)
2785 struct inode *inode = dentry->d_inode;
2786 struct rpc_cred *cred = NULL;
2787 struct nfs4_state *state = NULL;
2790 if (pnfs_ld_layoutret_on_setattr(inode))
2791 pnfs_commit_and_return_layout(inode);
2793 nfs_fattr_init(fattr);
2795 /* Deal with open(O_TRUNC) */
2796 if (sattr->ia_valid & ATTR_OPEN)
2797 sattr->ia_valid &= ~(ATTR_MTIME|ATTR_CTIME|ATTR_OPEN);
2799 /* Optimization: if the end result is no change, don't RPC */
2800 if ((sattr->ia_valid & ~(ATTR_FILE)) == 0)
2803 /* Search for an existing open(O_WRITE) file */
2804 if (sattr->ia_valid & ATTR_FILE) {
2805 struct nfs_open_context *ctx;
2807 ctx = nfs_file_open_context(sattr->ia_file);
2814 status = nfs4_do_setattr(inode, cred, fattr, sattr, state);
2816 nfs_setattr_update_inode(inode, sattr);
2820 static int _nfs4_proc_lookup(struct rpc_clnt *clnt, struct inode *dir,
2821 const struct qstr *name, struct nfs_fh *fhandle,
2822 struct nfs_fattr *fattr)
2824 struct nfs_server *server = NFS_SERVER(dir);
2826 struct nfs4_lookup_arg args = {
2827 .bitmask = server->attr_bitmask,
2828 .dir_fh = NFS_FH(dir),
2831 struct nfs4_lookup_res res = {
2836 struct rpc_message msg = {
2837 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOOKUP],
2842 nfs_fattr_init(fattr);
2844 dprintk("NFS call lookup %s\n", name->name);
2845 status = nfs4_call_sync(clnt, server, &msg, &args.seq_args, &res.seq_res, 0);
2846 dprintk("NFS reply lookup: %d\n", status);
2850 static void nfs_fixup_secinfo_attributes(struct nfs_fattr *fattr)
2852 fattr->valid |= NFS_ATTR_FATTR_TYPE | NFS_ATTR_FATTR_MODE |
2853 NFS_ATTR_FATTR_NLINK | NFS_ATTR_FATTR_MOUNTPOINT;
2854 fattr->mode = S_IFDIR | S_IRUGO | S_IXUGO;
2858 static int nfs4_proc_lookup_common(struct rpc_clnt **clnt, struct inode *dir,
2859 struct qstr *name, struct nfs_fh *fhandle,
2860 struct nfs_fattr *fattr)
2862 struct nfs4_exception exception = { };
2863 struct rpc_clnt *client = *clnt;
2866 err = _nfs4_proc_lookup(client, dir, name, fhandle, fattr);
2868 case -NFS4ERR_BADNAME:
2871 case -NFS4ERR_MOVED:
2872 err = nfs4_get_referral(client, dir, name, fattr, fhandle);
2874 case -NFS4ERR_WRONGSEC:
2876 if (client != *clnt)
2879 client = nfs4_create_sec_client(client, dir, name);
2881 return PTR_ERR(client);
2883 exception.retry = 1;
2886 err = nfs4_handle_exception(NFS_SERVER(dir), err, &exception);
2888 } while (exception.retry);
2893 else if (client != *clnt)
2894 rpc_shutdown_client(client);
2899 static int nfs4_proc_lookup(struct inode *dir, struct qstr *name,
2900 struct nfs_fh *fhandle, struct nfs_fattr *fattr)
2903 struct rpc_clnt *client = NFS_CLIENT(dir);
2905 status = nfs4_proc_lookup_common(&client, dir, name, fhandle, fattr);
2906 if (client != NFS_CLIENT(dir)) {
2907 rpc_shutdown_client(client);
2908 nfs_fixup_secinfo_attributes(fattr);
2914 nfs4_proc_lookup_mountpoint(struct inode *dir, struct qstr *name,
2915 struct nfs_fh *fhandle, struct nfs_fattr *fattr)
2918 struct rpc_clnt *client = rpc_clone_client(NFS_CLIENT(dir));
2920 status = nfs4_proc_lookup_common(&client, dir, name, fhandle, fattr);
2922 rpc_shutdown_client(client);
2923 return ERR_PTR(status);
2928 static int _nfs4_proc_access(struct inode *inode, struct nfs_access_entry *entry)
2930 struct nfs_server *server = NFS_SERVER(inode);
2931 struct nfs4_accessargs args = {
2932 .fh = NFS_FH(inode),
2933 .bitmask = server->cache_consistency_bitmask,
2935 struct nfs4_accessres res = {
2938 struct rpc_message msg = {
2939 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_ACCESS],
2942 .rpc_cred = entry->cred,
2944 int mode = entry->mask;
2948 * Determine which access bits we want to ask for...
2950 if (mode & MAY_READ)
2951 args.access |= NFS4_ACCESS_READ;
2952 if (S_ISDIR(inode->i_mode)) {
2953 if (mode & MAY_WRITE)
2954 args.access |= NFS4_ACCESS_MODIFY | NFS4_ACCESS_EXTEND | NFS4_ACCESS_DELETE;
2955 if (mode & MAY_EXEC)
2956 args.access |= NFS4_ACCESS_LOOKUP;
2958 if (mode & MAY_WRITE)
2959 args.access |= NFS4_ACCESS_MODIFY | NFS4_ACCESS_EXTEND;
2960 if (mode & MAY_EXEC)
2961 args.access |= NFS4_ACCESS_EXECUTE;
2964 res.fattr = nfs_alloc_fattr();
2965 if (res.fattr == NULL)
2968 status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0);
2970 nfs_access_set_mask(entry, res.access);
2971 nfs_refresh_inode(inode, res.fattr);
2973 nfs_free_fattr(res.fattr);
2977 static int nfs4_proc_access(struct inode *inode, struct nfs_access_entry *entry)
2979 struct nfs4_exception exception = { };
2982 err = nfs4_handle_exception(NFS_SERVER(inode),
2983 _nfs4_proc_access(inode, entry),
2985 } while (exception.retry);
2990 * TODO: For the time being, we don't try to get any attributes
2991 * along with any of the zero-copy operations READ, READDIR,
2994 * In the case of the first three, we want to put the GETATTR
2995 * after the read-type operation -- this is because it is hard
2996 * to predict the length of a GETATTR response in v4, and thus
2997 * align the READ data correctly. This means that the GETATTR
2998 * may end up partially falling into the page cache, and we should
2999 * shift it into the 'tail' of the xdr_buf before processing.
3000 * To do this efficiently, we need to know the total length
3001 * of data received, which doesn't seem to be available outside
3004 * In the case of WRITE, we also want to put the GETATTR after
3005 * the operation -- in this case because we want to make sure
3006 * we get the post-operation mtime and size.
3008 * Both of these changes to the XDR layer would in fact be quite
3009 * minor, but I decided to leave them for a subsequent patch.
3011 static int _nfs4_proc_readlink(struct inode *inode, struct page *page,
3012 unsigned int pgbase, unsigned int pglen)
3014 struct nfs4_readlink args = {
3015 .fh = NFS_FH(inode),
3020 struct nfs4_readlink_res res;
3021 struct rpc_message msg = {
3022 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READLINK],
3027 return nfs4_call_sync(NFS_SERVER(inode)->client, NFS_SERVER(inode), &msg, &args.seq_args, &res.seq_res, 0);
3030 static int nfs4_proc_readlink(struct inode *inode, struct page *page,
3031 unsigned int pgbase, unsigned int pglen)
3033 struct nfs4_exception exception = { };
3036 err = nfs4_handle_exception(NFS_SERVER(inode),
3037 _nfs4_proc_readlink(inode, page, pgbase, pglen),
3039 } while (exception.retry);
3044 * This is just for mknod. open(O_CREAT) will always do ->open_context().
3047 nfs4_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr,
3050 struct nfs_open_context *ctx;
3051 struct nfs4_state *state;
3054 ctx = alloc_nfs_open_context(dentry, FMODE_READ);
3056 return PTR_ERR(ctx);
3058 sattr->ia_mode &= ~current_umask();
3059 state = nfs4_do_open(dir, dentry, ctx->mode,
3060 flags, sattr, ctx->cred,
3061 &ctx->mdsthreshold);
3063 if (IS_ERR(state)) {
3064 status = PTR_ERR(state);
3067 d_add(dentry, igrab(state->inode));
3068 nfs_set_verifier(dentry, nfs_save_change_attribute(dir));
3071 put_nfs_open_context(ctx);
3075 static int _nfs4_proc_remove(struct inode *dir, struct qstr *name)
3077 struct nfs_server *server = NFS_SERVER(dir);
3078 struct nfs_removeargs args = {
3082 struct nfs_removeres res = {
3085 struct rpc_message msg = {
3086 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_REMOVE],
3092 status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 1);
3094 update_changeattr(dir, &res.cinfo);
3098 static int nfs4_proc_remove(struct inode *dir, struct qstr *name)
3100 struct nfs4_exception exception = { };
3103 err = nfs4_handle_exception(NFS_SERVER(dir),
3104 _nfs4_proc_remove(dir, name),
3106 } while (exception.retry);
3110 static void nfs4_proc_unlink_setup(struct rpc_message *msg, struct inode *dir)
3112 struct nfs_server *server = NFS_SERVER(dir);
3113 struct nfs_removeargs *args = msg->rpc_argp;
3114 struct nfs_removeres *res = msg->rpc_resp;
3116 res->server = server;
3117 msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_REMOVE];
3118 nfs41_init_sequence(&args->seq_args, &res->seq_res, 1);
3121 static void nfs4_proc_unlink_rpc_prepare(struct rpc_task *task, struct nfs_unlinkdata *data)
3123 nfs4_setup_sequence(NFS_SERVER(data->dir),
3124 &data->args.seq_args,
3129 static int nfs4_proc_unlink_done(struct rpc_task *task, struct inode *dir)
3131 struct nfs_removeres *res = task->tk_msg.rpc_resp;
3133 if (!nfs4_sequence_done(task, &res->seq_res))
3135 if (nfs4_async_handle_error(task, res->server, NULL) == -EAGAIN)
3137 update_changeattr(dir, &res->cinfo);
3141 static void nfs4_proc_rename_setup(struct rpc_message *msg, struct inode *dir)
3143 struct nfs_server *server = NFS_SERVER(dir);
3144 struct nfs_renameargs *arg = msg->rpc_argp;
3145 struct nfs_renameres *res = msg->rpc_resp;
3147 msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENAME];
3148 res->server = server;
3149 nfs41_init_sequence(&arg->seq_args, &res->seq_res, 1);
3152 static void nfs4_proc_rename_rpc_prepare(struct rpc_task *task, struct nfs_renamedata *data)
3154 nfs4_setup_sequence(NFS_SERVER(data->old_dir),
3155 &data->args.seq_args,
3160 static int nfs4_proc_rename_done(struct rpc_task *task, struct inode *old_dir,
3161 struct inode *new_dir)
3163 struct nfs_renameres *res = task->tk_msg.rpc_resp;
3165 if (!nfs4_sequence_done(task, &res->seq_res))
3167 if (nfs4_async_handle_error(task, res->server, NULL) == -EAGAIN)
3170 update_changeattr(old_dir, &res->old_cinfo);
3171 update_changeattr(new_dir, &res->new_cinfo);
3175 static int _nfs4_proc_rename(struct inode *old_dir, struct qstr *old_name,
3176 struct inode *new_dir, struct qstr *new_name)
3178 struct nfs_server *server = NFS_SERVER(old_dir);
3179 struct nfs_renameargs arg = {
3180 .old_dir = NFS_FH(old_dir),
3181 .new_dir = NFS_FH(new_dir),
3182 .old_name = old_name,
3183 .new_name = new_name,
3185 struct nfs_renameres res = {
3188 struct rpc_message msg = {
3189 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENAME],
3193 int status = -ENOMEM;
3195 status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1);
3197 update_changeattr(old_dir, &res.old_cinfo);
3198 update_changeattr(new_dir, &res.new_cinfo);
3203 static int nfs4_proc_rename(struct inode *old_dir, struct qstr *old_name,
3204 struct inode *new_dir, struct qstr *new_name)
3206 struct nfs4_exception exception = { };
3209 err = nfs4_handle_exception(NFS_SERVER(old_dir),
3210 _nfs4_proc_rename(old_dir, old_name,
3213 } while (exception.retry);
3217 static int _nfs4_proc_link(struct inode *inode, struct inode *dir, struct qstr *name)
3219 struct nfs_server *server = NFS_SERVER(inode);
3220 struct nfs4_link_arg arg = {
3221 .fh = NFS_FH(inode),
3222 .dir_fh = NFS_FH(dir),
3224 .bitmask = server->attr_bitmask,
3226 struct nfs4_link_res res = {
3229 struct rpc_message msg = {
3230 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LINK],
3234 int status = -ENOMEM;
3236 res.fattr = nfs_alloc_fattr();
3237 if (res.fattr == NULL)
3240 status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1);
3242 update_changeattr(dir, &res.cinfo);
3243 nfs_post_op_update_inode(inode, res.fattr);
3246 nfs_free_fattr(res.fattr);
3250 static int nfs4_proc_link(struct inode *inode, struct inode *dir, struct qstr *name)
3252 struct nfs4_exception exception = { };
3255 err = nfs4_handle_exception(NFS_SERVER(inode),
3256 _nfs4_proc_link(inode, dir, name),
3258 } while (exception.retry);
3262 struct nfs4_createdata {
3263 struct rpc_message msg;
3264 struct nfs4_create_arg arg;
3265 struct nfs4_create_res res;
3267 struct nfs_fattr fattr;
3270 static struct nfs4_createdata *nfs4_alloc_createdata(struct inode *dir,
3271 struct qstr *name, struct iattr *sattr, u32 ftype)
3273 struct nfs4_createdata *data;
3275 data = kzalloc(sizeof(*data), GFP_KERNEL);
3277 struct nfs_server *server = NFS_SERVER(dir);
3279 data->msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CREATE];
3280 data->msg.rpc_argp = &data->arg;
3281 data->msg.rpc_resp = &data->res;
3282 data->arg.dir_fh = NFS_FH(dir);
3283 data->arg.server = server;
3284 data->arg.name = name;
3285 data->arg.attrs = sattr;
3286 data->arg.ftype = ftype;
3287 data->arg.bitmask = server->attr_bitmask;
3288 data->res.server = server;
3289 data->res.fh = &data->fh;
3290 data->res.fattr = &data->fattr;
3291 nfs_fattr_init(data->res.fattr);
3296 static int nfs4_do_create(struct inode *dir, struct dentry *dentry, struct nfs4_createdata *data)
3298 int status = nfs4_call_sync(NFS_SERVER(dir)->client, NFS_SERVER(dir), &data->msg,
3299 &data->arg.seq_args, &data->res.seq_res, 1);
3301 update_changeattr(dir, &data->res.dir_cinfo);
3302 status = nfs_instantiate(dentry, data->res.fh, data->res.fattr);
3307 static void nfs4_free_createdata(struct nfs4_createdata *data)
3312 static int _nfs4_proc_symlink(struct inode *dir, struct dentry *dentry,
3313 struct page *page, unsigned int len, struct iattr *sattr)
3315 struct nfs4_createdata *data;
3316 int status = -ENAMETOOLONG;
3318 if (len > NFS4_MAXPATHLEN)
3322 data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4LNK);
3326 data->msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SYMLINK];
3327 data->arg.u.symlink.pages = &page;
3328 data->arg.u.symlink.len = len;
3330 status = nfs4_do_create(dir, dentry, data);
3332 nfs4_free_createdata(data);
3337 static int nfs4_proc_symlink(struct inode *dir, struct dentry *dentry,
3338 struct page *page, unsigned int len, struct iattr *sattr)
3340 struct nfs4_exception exception = { };
3343 err = nfs4_handle_exception(NFS_SERVER(dir),
3344 _nfs4_proc_symlink(dir, dentry, page,
3347 } while (exception.retry);
3351 static int _nfs4_proc_mkdir(struct inode *dir, struct dentry *dentry,
3352 struct iattr *sattr)
3354 struct nfs4_createdata *data;
3355 int status = -ENOMEM;
3357 data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4DIR);
3361 status = nfs4_do_create(dir, dentry, data);
3363 nfs4_free_createdata(data);
3368 static int nfs4_proc_mkdir(struct inode *dir, struct dentry *dentry,
3369 struct iattr *sattr)
3371 struct nfs4_exception exception = { };
3374 sattr->ia_mode &= ~current_umask();
3376 err = nfs4_handle_exception(NFS_SERVER(dir),
3377 _nfs4_proc_mkdir(dir, dentry, sattr),
3379 } while (exception.retry);
3383 static int _nfs4_proc_readdir(struct dentry *dentry, struct rpc_cred *cred,
3384 u64 cookie, struct page **pages, unsigned int count, int plus)
3386 struct inode *dir = dentry->d_inode;
3387 struct nfs4_readdir_arg args = {
3392 .bitmask = NFS_SERVER(dentry->d_inode)->attr_bitmask,
3395 struct nfs4_readdir_res res;
3396 struct rpc_message msg = {
3397 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READDIR],
3404 dprintk("%s: dentry = %s/%s, cookie = %Lu\n", __func__,
3405 dentry->d_parent->d_name.name,
3406 dentry->d_name.name,
3407 (unsigned long long)cookie);
3408 nfs4_setup_readdir(cookie, NFS_I(dir)->cookieverf, dentry, &args);
3409 res.pgbase = args.pgbase;
3410 status = nfs4_call_sync(NFS_SERVER(dir)->client, NFS_SERVER(dir), &msg, &args.seq_args, &res.seq_res, 0);
3412 memcpy(NFS_I(dir)->cookieverf, res.verifier.data, NFS4_VERIFIER_SIZE);
3413 status += args.pgbase;
3416 nfs_invalidate_atime(dir);
3418 dprintk("%s: returns %d\n", __func__, status);
3422 static int nfs4_proc_readdir(struct dentry *dentry, struct rpc_cred *cred,
3423 u64 cookie, struct page **pages, unsigned int count, int plus)
3425 struct nfs4_exception exception = { };
3428 err = nfs4_handle_exception(NFS_SERVER(dentry->d_inode),
3429 _nfs4_proc_readdir(dentry, cred, cookie,
3430 pages, count, plus),
3432 } while (exception.retry);
3436 static int _nfs4_proc_mknod(struct inode *dir, struct dentry *dentry,
3437 struct iattr *sattr, dev_t rdev)
3439 struct nfs4_createdata *data;
3440 int mode = sattr->ia_mode;
3441 int status = -ENOMEM;
3443 data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4SOCK);
3448 data->arg.ftype = NF4FIFO;
3449 else if (S_ISBLK(mode)) {
3450 data->arg.ftype = NF4BLK;
3451 data->arg.u.device.specdata1 = MAJOR(rdev);
3452 data->arg.u.device.specdata2 = MINOR(rdev);
3454 else if (S_ISCHR(mode)) {
3455 data->arg.ftype = NF4CHR;
3456 data->arg.u.device.specdata1 = MAJOR(rdev);
3457 data->arg.u.device.specdata2 = MINOR(rdev);
3458 } else if (!S_ISSOCK(mode)) {
3463 status = nfs4_do_create(dir, dentry, data);
3465 nfs4_free_createdata(data);
3470 static int nfs4_proc_mknod(struct inode *dir, struct dentry *dentry,
3471 struct iattr *sattr, dev_t rdev)
3473 struct nfs4_exception exception = { };
3476 sattr->ia_mode &= ~current_umask();
3478 err = nfs4_handle_exception(NFS_SERVER(dir),
3479 _nfs4_proc_mknod(dir, dentry, sattr, rdev),
3481 } while (exception.retry);
3485 static int _nfs4_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle,
3486 struct nfs_fsstat *fsstat)
3488 struct nfs4_statfs_arg args = {
3490 .bitmask = server->attr_bitmask,
3492 struct nfs4_statfs_res res = {
3495 struct rpc_message msg = {
3496 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_STATFS],
3501 nfs_fattr_init(fsstat->fattr);
3502 return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0);
3505 static int nfs4_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsstat *fsstat)
3507 struct nfs4_exception exception = { };
3510 err = nfs4_handle_exception(server,
3511 _nfs4_proc_statfs(server, fhandle, fsstat),
3513 } while (exception.retry);
3517 static int _nfs4_do_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle,
3518 struct nfs_fsinfo *fsinfo)
3520 struct nfs4_fsinfo_arg args = {
3522 .bitmask = server->attr_bitmask,
3524 struct nfs4_fsinfo_res res = {
3527 struct rpc_message msg = {
3528 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FSINFO],
3533 return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0);
3536 static int nfs4_do_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsinfo *fsinfo)
3538 struct nfs4_exception exception = { };
3539 unsigned long now = jiffies;
3543 err = _nfs4_do_fsinfo(server, fhandle, fsinfo);
3545 struct nfs_client *clp = server->nfs_client;
3547 spin_lock(&clp->cl_lock);
3548 clp->cl_lease_time = fsinfo->lease_time * HZ;
3549 clp->cl_last_renewal = now;
3550 spin_unlock(&clp->cl_lock);
3553 err = nfs4_handle_exception(server, err, &exception);
3554 } while (exception.retry);
3558 static int nfs4_proc_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsinfo *fsinfo)
3562 nfs_fattr_init(fsinfo->fattr);
3563 error = nfs4_do_fsinfo(server, fhandle, fsinfo);
3565 /* block layout checks this! */
3566 server->pnfs_blksize = fsinfo->blksize;
3567 set_pnfs_layoutdriver(server, fhandle, fsinfo->layouttype);
3573 static int _nfs4_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle,
3574 struct nfs_pathconf *pathconf)
3576 struct nfs4_pathconf_arg args = {
3578 .bitmask = server->attr_bitmask,
3580 struct nfs4_pathconf_res res = {
3581 .pathconf = pathconf,
3583 struct rpc_message msg = {
3584 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_PATHCONF],
3589 /* None of the pathconf attributes are mandatory to implement */
3590 if ((args.bitmask[0] & nfs4_pathconf_bitmap[0]) == 0) {
3591 memset(pathconf, 0, sizeof(*pathconf));
3595 nfs_fattr_init(pathconf->fattr);
3596 return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0);
3599 static int nfs4_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle,
3600 struct nfs_pathconf *pathconf)
3602 struct nfs4_exception exception = { };
3606 err = nfs4_handle_exception(server,
3607 _nfs4_proc_pathconf(server, fhandle, pathconf),
3609 } while (exception.retry);
3613 int nfs4_set_rw_stateid(nfs4_stateid *stateid,
3614 const struct nfs_open_context *ctx,
3615 const struct nfs_lock_context *l_ctx,
3618 const struct nfs_lockowner *lockowner = NULL;
3621 lockowner = &l_ctx->lockowner;
3622 return nfs4_select_rw_stateid(stateid, ctx->state, fmode, lockowner);
3624 EXPORT_SYMBOL_GPL(nfs4_set_rw_stateid);
3626 static bool nfs4_stateid_is_current(nfs4_stateid *stateid,
3627 const struct nfs_open_context *ctx,
3628 const struct nfs_lock_context *l_ctx,
3631 nfs4_stateid current_stateid;
3633 if (nfs4_set_rw_stateid(¤t_stateid, ctx, l_ctx, fmode))
3635 return nfs4_stateid_match(stateid, ¤t_stateid);
3638 static bool nfs4_error_stateid_expired(int err)
3641 case -NFS4ERR_DELEG_REVOKED:
3642 case -NFS4ERR_ADMIN_REVOKED:
3643 case -NFS4ERR_BAD_STATEID:
3644 case -NFS4ERR_STALE_STATEID:
3645 case -NFS4ERR_OLD_STATEID:
3646 case -NFS4ERR_OPENMODE:
3647 case -NFS4ERR_EXPIRED:
3653 void __nfs4_read_done_cb(struct nfs_read_data *data)
3655 nfs_invalidate_atime(data->header->inode);
3658 static int nfs4_read_done_cb(struct rpc_task *task, struct nfs_read_data *data)
3660 struct nfs_server *server = NFS_SERVER(data->header->inode);
3662 if (nfs4_async_handle_error(task, server, data->args.context->state) == -EAGAIN) {
3663 rpc_restart_call_prepare(task);
3667 __nfs4_read_done_cb(data);
3668 if (task->tk_status > 0)
3669 renew_lease(server, data->timestamp);
3673 static bool nfs4_read_stateid_changed(struct rpc_task *task,
3674 struct nfs_readargs *args)
3677 if (!nfs4_error_stateid_expired(task->tk_status) ||
3678 nfs4_stateid_is_current(&args->stateid,
3683 rpc_restart_call_prepare(task);
3687 static int nfs4_read_done(struct rpc_task *task, struct nfs_read_data *data)
3690 dprintk("--> %s\n", __func__);
3692 if (!nfs4_sequence_done(task, &data->res.seq_res))
3694 if (nfs4_read_stateid_changed(task, &data->args))
3696 return data->read_done_cb ? data->read_done_cb(task, data) :
3697 nfs4_read_done_cb(task, data);
3700 static void nfs4_proc_read_setup(struct nfs_read_data *data, struct rpc_message *msg)
3702 data->timestamp = jiffies;
3703 data->read_done_cb = nfs4_read_done_cb;
3704 msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READ];
3705 nfs41_init_sequence(&data->args.seq_args, &data->res.seq_res, 0);
3708 static void nfs4_proc_read_rpc_prepare(struct rpc_task *task, struct nfs_read_data *data)
3710 if (nfs4_setup_sequence(NFS_SERVER(data->header->inode),
3711 &data->args.seq_args,
3715 nfs4_set_rw_stateid(&data->args.stateid, data->args.context,
3716 data->args.lock_context, FMODE_READ);
3719 static int nfs4_write_done_cb(struct rpc_task *task, struct nfs_write_data *data)
3721 struct inode *inode = data->header->inode;
3723 if (nfs4_async_handle_error(task, NFS_SERVER(inode), data->args.context->state) == -EAGAIN) {
3724 rpc_restart_call_prepare(task);
3727 if (task->tk_status >= 0) {
3728 renew_lease(NFS_SERVER(inode), data->timestamp);
3729 nfs_post_op_update_inode_force_wcc(inode, &data->fattr);
3734 static bool nfs4_write_stateid_changed(struct rpc_task *task,
3735 struct nfs_writeargs *args)
3738 if (!nfs4_error_stateid_expired(task->tk_status) ||
3739 nfs4_stateid_is_current(&args->stateid,
3744 rpc_restart_call_prepare(task);
3748 static int nfs4_write_done(struct rpc_task *task, struct nfs_write_data *data)
3750 if (!nfs4_sequence_done(task, &data->res.seq_res))
3752 if (nfs4_write_stateid_changed(task, &data->args))
3754 return data->write_done_cb ? data->write_done_cb(task, data) :
3755 nfs4_write_done_cb(task, data);
3759 bool nfs4_write_need_cache_consistency_data(const struct nfs_write_data *data)
3761 const struct nfs_pgio_header *hdr = data->header;
3763 /* Don't request attributes for pNFS or O_DIRECT writes */
3764 if (data->ds_clp != NULL || hdr->dreq != NULL)
3766 /* Otherwise, request attributes if and only if we don't hold
3769 return nfs4_have_delegation(hdr->inode, FMODE_READ) == 0;
3772 static void nfs4_proc_write_setup(struct nfs_write_data *data, struct rpc_message *msg)
3774 struct nfs_server *server = NFS_SERVER(data->header->inode);
3776 if (!nfs4_write_need_cache_consistency_data(data)) {
3777 data->args.bitmask = NULL;
3778 data->res.fattr = NULL;
3780 data->args.bitmask = server->cache_consistency_bitmask;
3782 if (!data->write_done_cb)
3783 data->write_done_cb = nfs4_write_done_cb;
3784 data->res.server = server;
3785 data->timestamp = jiffies;
3787 msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_WRITE];
3788 nfs41_init_sequence(&data->args.seq_args, &data->res.seq_res, 1);
3791 static void nfs4_proc_write_rpc_prepare(struct rpc_task *task, struct nfs_write_data *data)
3793 if (nfs4_setup_sequence(NFS_SERVER(data->header->inode),
3794 &data->args.seq_args,
3798 nfs4_set_rw_stateid(&data->args.stateid, data->args.context,
3799 data->args.lock_context, FMODE_WRITE);
3802 static void nfs4_proc_commit_rpc_prepare(struct rpc_task *task, struct nfs_commit_data *data)
3804 nfs4_setup_sequence(NFS_SERVER(data->inode),
3805 &data->args.seq_args,
3810 static int nfs4_commit_done_cb(struct rpc_task *task, struct nfs_commit_data *data)
3812 struct inode *inode = data->inode;
3814 if (nfs4_async_handle_error(task, NFS_SERVER(inode), NULL) == -EAGAIN) {
3815 rpc_restart_call_prepare(task);
3821 static int nfs4_commit_done(struct rpc_task *task, struct nfs_commit_data *data)
3823 if (!nfs4_sequence_done(task, &data->res.seq_res))
3825 return data->commit_done_cb(task, data);
3828 static void nfs4_proc_commit_setup(struct nfs_commit_data *data, struct rpc_message *msg)
3830 struct nfs_server *server = NFS_SERVER(data->inode);
3832 if (data->commit_done_cb == NULL)
3833 data->commit_done_cb = nfs4_commit_done_cb;
3834 data->res.server = server;
3835 msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_COMMIT];
3836 nfs41_init_sequence(&data->args.seq_args, &data->res.seq_res, 1);
3839 struct nfs4_renewdata {
3840 struct nfs_client *client;
3841 unsigned long timestamp;
3845 * nfs4_proc_async_renew(): This is not one of the nfs_rpc_ops; it is a special
3846 * standalone procedure for queueing an asynchronous RENEW.
3848 static void nfs4_renew_release(void *calldata)
3850 struct nfs4_renewdata *data = calldata;
3851 struct nfs_client *clp = data->client;
3853 if (atomic_read(&clp->cl_count) > 1)
3854 nfs4_schedule_state_renewal(clp);
3855 nfs_put_client(clp);
3859 static void nfs4_renew_done(struct rpc_task *task, void *calldata)
3861 struct nfs4_renewdata *data = calldata;
3862 struct nfs_client *clp = data->client;
3863 unsigned long timestamp = data->timestamp;
3865 if (task->tk_status < 0) {
3866 /* Unless we're shutting down, schedule state recovery! */
3867 if (test_bit(NFS_CS_RENEWD, &clp->cl_res_state) == 0)
3869 if (task->tk_status != NFS4ERR_CB_PATH_DOWN) {
3870 nfs4_schedule_lease_recovery(clp);
3873 nfs4_schedule_path_down_recovery(clp);
3875 do_renew_lease(clp, timestamp);
3878 static const struct rpc_call_ops nfs4_renew_ops = {
3879 .rpc_call_done = nfs4_renew_done,
3880 .rpc_release = nfs4_renew_release,
3883 static int nfs4_proc_async_renew(struct nfs_client *clp, struct rpc_cred *cred, unsigned renew_flags)
3885 struct rpc_message msg = {
3886 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENEW],
3890 struct nfs4_renewdata *data;
3892 if (renew_flags == 0)
3894 if (!atomic_inc_not_zero(&clp->cl_count))
3896 data = kmalloc(sizeof(*data), GFP_NOFS);
3900 data->timestamp = jiffies;
3901 return rpc_call_async(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT,
3902 &nfs4_renew_ops, data);
3905 static int nfs4_proc_renew(struct nfs_client *clp, struct rpc_cred *cred)
3907 struct rpc_message msg = {
3908 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENEW],
3912 unsigned long now = jiffies;
3915 status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT);
3918 do_renew_lease(clp, now);
3922 static inline int nfs4_server_supports_acls(struct nfs_server *server)
3924 return (server->caps & NFS_CAP_ACLS)
3925 && (server->acl_bitmask & ACL4_SUPPORT_ALLOW_ACL)
3926 && (server->acl_bitmask & ACL4_SUPPORT_DENY_ACL);
3929 /* Assuming that XATTR_SIZE_MAX is a multiple of PAGE_SIZE, and that
3930 * it's OK to put sizeof(void) * (XATTR_SIZE_MAX/PAGE_SIZE) bytes on
3933 #define NFS4ACL_MAXPAGES DIV_ROUND_UP(XATTR_SIZE_MAX, PAGE_SIZE)
3935 static int buf_to_pages_noslab(const void *buf, size_t buflen,
3936 struct page **pages, unsigned int *pgbase)
3938 struct page *newpage, **spages;
3944 len = min_t(size_t, PAGE_SIZE, buflen);
3945 newpage = alloc_page(GFP_KERNEL);
3947 if (newpage == NULL)
3949 memcpy(page_address(newpage), buf, len);
3954 } while (buflen != 0);
3960 __free_page(spages[rc-1]);
3964 struct nfs4_cached_acl {
3970 static void nfs4_set_cached_acl(struct inode *inode, struct nfs4_cached_acl *acl)
3972 struct nfs_inode *nfsi = NFS_I(inode);
3974 spin_lock(&inode->i_lock);
3975 kfree(nfsi->nfs4_acl);
3976 nfsi->nfs4_acl = acl;
3977 spin_unlock(&inode->i_lock);
3980 static void nfs4_zap_acl_attr(struct inode *inode)
3982 nfs4_set_cached_acl(inode, NULL);
3985 static inline ssize_t nfs4_read_cached_acl(struct inode *inode, char *buf, size_t buflen)
3987 struct nfs_inode *nfsi = NFS_I(inode);
3988 struct nfs4_cached_acl *acl;
3991 spin_lock(&inode->i_lock);
3992 acl = nfsi->nfs4_acl;
3995 if (buf == NULL) /* user is just asking for length */
3997 if (acl->cached == 0)
3999 ret = -ERANGE; /* see getxattr(2) man page */
4000 if (acl->len > buflen)
4002 memcpy(buf, acl->data, acl->len);
4006 spin_unlock(&inode->i_lock);
4010 static void nfs4_write_cached_acl(struct inode *inode, struct page **pages, size_t pgbase, size_t acl_len)
4012 struct nfs4_cached_acl *acl;
4013 size_t buflen = sizeof(*acl) + acl_len;
4015 if (buflen <= PAGE_SIZE) {
4016 acl = kmalloc(buflen, GFP_KERNEL);
4020 _copy_from_pages(acl->data, pages, pgbase, acl_len);
4022 acl = kmalloc(sizeof(*acl), GFP_KERNEL);
4029 nfs4_set_cached_acl(inode, acl);
4033 * The getxattr API returns the required buffer length when called with a
4034 * NULL buf. The NFSv4 acl tool then calls getxattr again after allocating
4035 * the required buf. On a NULL buf, we send a page of data to the server
4036 * guessing that the ACL request can be serviced by a page. If so, we cache
4037 * up to the page of ACL data, and the 2nd call to getxattr is serviced by
4038 * the cache. If not so, we throw away the page, and cache the required
4039 * length. The next getxattr call will then produce another round trip to
4040 * the server, this time with the input buf of the required size.
4042 static ssize_t __nfs4_get_acl_uncached(struct inode *inode, void *buf, size_t buflen)
4044 struct page *pages[NFS4ACL_MAXPAGES] = {NULL, };
4045 struct nfs_getaclargs args = {
4046 .fh = NFS_FH(inode),
4050 struct nfs_getaclres res = {
4053 struct rpc_message msg = {
4054 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETACL],
4058 unsigned int npages = DIV_ROUND_UP(buflen, PAGE_SIZE);
4059 int ret = -ENOMEM, i;
4061 /* As long as we're doing a round trip to the server anyway,
4062 * let's be prepared for a page of acl data. */
4065 if (npages > ARRAY_SIZE(pages))
4068 for (i = 0; i < npages; i++) {
4069 pages[i] = alloc_page(GFP_KERNEL);
4074 /* for decoding across pages */
4075 res.acl_scratch = alloc_page(GFP_KERNEL);
4076 if (!res.acl_scratch)
4079 args.acl_len = npages * PAGE_SIZE;
4080 args.acl_pgbase = 0;
4082 dprintk("%s buf %p buflen %zu npages %d args.acl_len %zu\n",
4083 __func__, buf, buflen, npages, args.acl_len);
4084 ret = nfs4_call_sync(NFS_SERVER(inode)->client, NFS_SERVER(inode),
4085 &msg, &args.seq_args, &res.seq_res, 0);
4089 /* Handle the case where the passed-in buffer is too short */
4090 if (res.acl_flags & NFS4_ACL_TRUNC) {
4091 /* Did the user only issue a request for the acl length? */
4097 nfs4_write_cached_acl(inode, pages, res.acl_data_offset, res.acl_len);
4099 if (res.acl_len > buflen) {
4103 _copy_from_pages(buf, pages, res.acl_data_offset, res.acl_len);
4108 for (i = 0; i < npages; i++)
4110 __free_page(pages[i]);
4111 if (res.acl_scratch)
4112 __free_page(res.acl_scratch);
4116 static ssize_t nfs4_get_acl_uncached(struct inode *inode, void *buf, size_t buflen)
4118 struct nfs4_exception exception = { };
4121 ret = __nfs4_get_acl_uncached(inode, buf, buflen);
4124 ret = nfs4_handle_exception(NFS_SERVER(inode), ret, &exception);
4125 } while (exception.retry);
4129 static ssize_t nfs4_proc_get_acl(struct inode *inode, void *buf, size_t buflen)
4131 struct nfs_server *server = NFS_SERVER(inode);
4134 if (!nfs4_server_supports_acls(server))
4136 ret = nfs_revalidate_inode(server, inode);
4139 if (NFS_I(inode)->cache_validity & NFS_INO_INVALID_ACL)
4140 nfs_zap_acl_cache(inode);
4141 ret = nfs4_read_cached_acl(inode, buf, buflen);
4143 /* -ENOENT is returned if there is no ACL or if there is an ACL
4144 * but no cached acl data, just the acl length */
4146 return nfs4_get_acl_uncached(inode, buf, buflen);
4149 static int __nfs4_proc_set_acl(struct inode *inode, const void *buf, size_t buflen)
4151 struct nfs_server *server = NFS_SERVER(inode);
4152 struct page *pages[NFS4ACL_MAXPAGES];
4153 struct nfs_setaclargs arg = {
4154 .fh = NFS_FH(inode),
4158 struct nfs_setaclres res;
4159 struct rpc_message msg = {
4160 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETACL],
4164 unsigned int npages = DIV_ROUND_UP(buflen, PAGE_SIZE);
4167 if (!nfs4_server_supports_acls(server))
4169 if (npages > ARRAY_SIZE(pages))
4171 i = buf_to_pages_noslab(buf, buflen, arg.acl_pages, &arg.acl_pgbase);
4174 nfs4_inode_return_delegation(inode);
4175 ret = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1);
4178 * Free each page after tx, so the only ref left is
4179 * held by the network stack
4182 put_page(pages[i-1]);
4185 * Acl update can result in inode attribute update.
4186 * so mark the attribute cache invalid.
4188 spin_lock(&inode->i_lock);
4189 NFS_I(inode)->cache_validity |= NFS_INO_INVALID_ATTR;
4190 spin_unlock(&inode->i_lock);
4191 nfs_access_zap_cache(inode);
4192 nfs_zap_acl_cache(inode);
4196 static int nfs4_proc_set_acl(struct inode *inode, const void *buf, size_t buflen)
4198 struct nfs4_exception exception = { };
4201 err = nfs4_handle_exception(NFS_SERVER(inode),
4202 __nfs4_proc_set_acl(inode, buf, buflen),
4204 } while (exception.retry);
4209 nfs4_async_handle_error(struct rpc_task *task, const struct nfs_server *server, struct nfs4_state *state)
4211 struct nfs_client *clp = server->nfs_client;
4213 if (task->tk_status >= 0)
4215 switch(task->tk_status) {
4216 case -NFS4ERR_DELEG_REVOKED:
4217 case -NFS4ERR_ADMIN_REVOKED:
4218 case -NFS4ERR_BAD_STATEID:
4221 nfs_remove_bad_delegation(state->inode);
4222 case -NFS4ERR_OPENMODE:
4225 if (nfs4_schedule_stateid_recovery(server, state) < 0)
4226 goto stateid_invalid;
4227 goto wait_on_recovery;
4228 case -NFS4ERR_EXPIRED:
4229 if (state != NULL) {
4230 if (nfs4_schedule_stateid_recovery(server, state) < 0)
4231 goto stateid_invalid;
4233 case -NFS4ERR_STALE_STATEID:
4234 case -NFS4ERR_STALE_CLIENTID:
4235 nfs4_schedule_lease_recovery(clp);
4236 goto wait_on_recovery;
4237 #if defined(CONFIG_NFS_V4_1)
4238 case -NFS4ERR_BADSESSION:
4239 case -NFS4ERR_BADSLOT:
4240 case -NFS4ERR_BAD_HIGH_SLOT:
4241 case -NFS4ERR_DEADSESSION:
4242 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION:
4243 case -NFS4ERR_SEQ_FALSE_RETRY:
4244 case -NFS4ERR_SEQ_MISORDERED:
4245 dprintk("%s ERROR %d, Reset session\n", __func__,
4247 nfs4_schedule_session_recovery(clp->cl_session, task->tk_status);
4248 task->tk_status = 0;
4250 #endif /* CONFIG_NFS_V4_1 */
4251 case -NFS4ERR_DELAY:
4252 nfs_inc_server_stats(server, NFSIOS_DELAY);
4253 case -NFS4ERR_GRACE:
4254 rpc_delay(task, NFS4_POLL_RETRY_MAX);
4255 task->tk_status = 0;
4257 case -NFS4ERR_RETRY_UNCACHED_REP:
4258 case -NFS4ERR_OLD_STATEID:
4259 task->tk_status = 0;
4262 task->tk_status = nfs4_map_errors(task->tk_status);
4265 task->tk_status = -EIO;
4268 rpc_sleep_on(&clp->cl_rpcwaitq, task, NULL);
4269 if (test_bit(NFS4CLNT_MANAGER_RUNNING, &clp->cl_state) == 0)
4270 rpc_wake_up_queued_task(&clp->cl_rpcwaitq, task);
4271 task->tk_status = 0;
4275 static void nfs4_init_boot_verifier(const struct nfs_client *clp,
4276 nfs4_verifier *bootverf)
4280 if (test_bit(NFS4CLNT_PURGE_STATE, &clp->cl_state)) {
4281 /* An impossible timestamp guarantees this value
4282 * will never match a generated boot time. */
4284 verf[1] = (__be32)(NSEC_PER_SEC + 1);
4286 struct nfs_net *nn = net_generic(clp->cl_net, nfs_net_id);
4287 verf[0] = (__be32)nn->boot_time.tv_sec;
4288 verf[1] = (__be32)nn->boot_time.tv_nsec;
4290 memcpy(bootverf->data, verf, sizeof(bootverf->data));
4294 nfs4_init_nonuniform_client_string(const struct nfs_client *clp,
4295 char *buf, size_t len)
4297 unsigned int result;
4300 result = scnprintf(buf, len, "Linux NFSv4.0 %s/%s %s",
4302 rpc_peeraddr2str(clp->cl_rpcclient,
4304 rpc_peeraddr2str(clp->cl_rpcclient,
4305 RPC_DISPLAY_PROTO));
4311 nfs4_init_uniform_client_string(const struct nfs_client *clp,
4312 char *buf, size_t len)
4314 char *nodename = clp->cl_rpcclient->cl_nodename;
4316 if (nfs4_client_id_uniquifier[0] != '\0')
4317 nodename = nfs4_client_id_uniquifier;
4318 return scnprintf(buf, len, "Linux NFSv%u.%u %s",
4319 clp->rpc_ops->version, clp->cl_minorversion,
4324 * nfs4_proc_setclientid - Negotiate client ID
4325 * @clp: state data structure
4326 * @program: RPC program for NFSv4 callback service
4327 * @port: IP port number for NFS4 callback service
4328 * @cred: RPC credential to use for this call
4329 * @res: where to place the result
4331 * Returns zero, a negative errno, or a negative NFS4ERR status code.
4333 int nfs4_proc_setclientid(struct nfs_client *clp, u32 program,
4334 unsigned short port, struct rpc_cred *cred,
4335 struct nfs4_setclientid_res *res)
4337 nfs4_verifier sc_verifier;
4338 struct nfs4_setclientid setclientid = {
4339 .sc_verifier = &sc_verifier,
4341 .sc_cb_ident = clp->cl_cb_ident,
4343 struct rpc_message msg = {
4344 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETCLIENTID],
4345 .rpc_argp = &setclientid,
4351 /* nfs_client_id4 */
4352 nfs4_init_boot_verifier(clp, &sc_verifier);
4353 if (test_bit(NFS_CS_MIGRATION, &clp->cl_flags))
4354 setclientid.sc_name_len =
4355 nfs4_init_uniform_client_string(clp,
4356 setclientid.sc_name,
4357 sizeof(setclientid.sc_name));
4359 setclientid.sc_name_len =
4360 nfs4_init_nonuniform_client_string(clp,
4361 setclientid.sc_name,
4362 sizeof(setclientid.sc_name));
4365 setclientid.sc_netid_len = scnprintf(setclientid.sc_netid,
4366 sizeof(setclientid.sc_netid),
4367 rpc_peeraddr2str(clp->cl_rpcclient,
4368 RPC_DISPLAY_NETID));
4370 setclientid.sc_uaddr_len = scnprintf(setclientid.sc_uaddr,
4371 sizeof(setclientid.sc_uaddr), "%s.%u.%u",
4372 clp->cl_ipaddr, port >> 8, port & 255);
4374 dprintk("NFS call setclientid auth=%s, '%.*s'\n",
4375 clp->cl_rpcclient->cl_auth->au_ops->au_name,
4376 setclientid.sc_name_len, setclientid.sc_name);
4377 status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT);
4378 dprintk("NFS reply setclientid: %d\n", status);
4383 * nfs4_proc_setclientid_confirm - Confirm client ID
4384 * @clp: state data structure
4385 * @res: result of a previous SETCLIENTID
4386 * @cred: RPC credential to use for this call
4388 * Returns zero, a negative errno, or a negative NFS4ERR status code.
4390 int nfs4_proc_setclientid_confirm(struct nfs_client *clp,
4391 struct nfs4_setclientid_res *arg,
4392 struct rpc_cred *cred)
4394 struct rpc_message msg = {
4395 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETCLIENTID_CONFIRM],
4401 dprintk("NFS call setclientid_confirm auth=%s, (client ID %llx)\n",
4402 clp->cl_rpcclient->cl_auth->au_ops->au_name,
4404 status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT);
4405 dprintk("NFS reply setclientid_confirm: %d\n", status);
4409 struct nfs4_delegreturndata {
4410 struct nfs4_delegreturnargs args;
4411 struct nfs4_delegreturnres res;
4413 nfs4_stateid stateid;
4414 unsigned long timestamp;
4415 struct nfs_fattr fattr;
4419 static void nfs4_delegreturn_done(struct rpc_task *task, void *calldata)
4421 struct nfs4_delegreturndata *data = calldata;
4423 if (!nfs4_sequence_done(task, &data->res.seq_res))
4426 switch (task->tk_status) {
4427 case -NFS4ERR_STALE_STATEID:
4428 case -NFS4ERR_EXPIRED:
4430 renew_lease(data->res.server, data->timestamp);
4433 if (nfs4_async_handle_error(task, data->res.server, NULL) ==
4435 rpc_restart_call_prepare(task);
4439 data->rpc_status = task->tk_status;
4442 static void nfs4_delegreturn_release(void *calldata)
4447 #if defined(CONFIG_NFS_V4_1)
4448 static void nfs4_delegreturn_prepare(struct rpc_task *task, void *data)
4450 struct nfs4_delegreturndata *d_data;
4452 d_data = (struct nfs4_delegreturndata *)data;
4454 nfs4_setup_sequence(d_data->res.server,
4455 &d_data->args.seq_args,
4456 &d_data->res.seq_res,
4459 #endif /* CONFIG_NFS_V4_1 */
4461 static const struct rpc_call_ops nfs4_delegreturn_ops = {
4462 #if defined(CONFIG_NFS_V4_1)
4463 .rpc_call_prepare = nfs4_delegreturn_prepare,
4464 #endif /* CONFIG_NFS_V4_1 */
4465 .rpc_call_done = nfs4_delegreturn_done,
4466 .rpc_release = nfs4_delegreturn_release,
4469 static int _nfs4_proc_delegreturn(struct inode *inode, struct rpc_cred *cred, const nfs4_stateid *stateid, int issync)
4471 struct nfs4_delegreturndata *data;
4472 struct nfs_server *server = NFS_SERVER(inode);
4473 struct rpc_task *task;
4474 struct rpc_message msg = {
4475 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DELEGRETURN],
4478 struct rpc_task_setup task_setup_data = {
4479 .rpc_client = server->client,
4480 .rpc_message = &msg,
4481 .callback_ops = &nfs4_delegreturn_ops,
4482 .flags = RPC_TASK_ASYNC,
4486 data = kzalloc(sizeof(*data), GFP_NOFS);
4489 nfs41_init_sequence(&data->args.seq_args, &data->res.seq_res, 1);
4490 data->args.fhandle = &data->fh;
4491 data->args.stateid = &data->stateid;
4492 data->args.bitmask = server->cache_consistency_bitmask;
4493 nfs_copy_fh(&data->fh, NFS_FH(inode));
4494 nfs4_stateid_copy(&data->stateid, stateid);
4495 data->res.fattr = &data->fattr;
4496 data->res.server = server;
4497 nfs_fattr_init(data->res.fattr);
4498 data->timestamp = jiffies;
4499 data->rpc_status = 0;
4501 task_setup_data.callback_data = data;
4502 msg.rpc_argp = &data->args;
4503 msg.rpc_resp = &data->res;
4504 task = rpc_run_task(&task_setup_data);
4506 return PTR_ERR(task);
4509 status = nfs4_wait_for_completion_rpc_task(task);
4512 status = data->rpc_status;
4514 nfs_post_op_update_inode_force_wcc(inode, &data->fattr);
4516 nfs_refresh_inode(inode, &data->fattr);
4522 int nfs4_proc_delegreturn(struct inode *inode, struct rpc_cred *cred, const nfs4_stateid *stateid, int issync)
4524 struct nfs_server *server = NFS_SERVER(inode);
4525 struct nfs4_exception exception = { };
4528 err = _nfs4_proc_delegreturn(inode, cred, stateid, issync);
4530 case -NFS4ERR_STALE_STATEID:
4531 case -NFS4ERR_EXPIRED:
4535 err = nfs4_handle_exception(server, err, &exception);
4536 } while (exception.retry);
4540 #define NFS4_LOCK_MINTIMEOUT (1 * HZ)
4541 #define NFS4_LOCK_MAXTIMEOUT (30 * HZ)
4544 * sleep, with exponential backoff, and retry the LOCK operation.
4546 static unsigned long
4547 nfs4_set_lock_task_retry(unsigned long timeout)
4549 freezable_schedule_timeout_killable(timeout);
4551 if (timeout > NFS4_LOCK_MAXTIMEOUT)
4552 return NFS4_LOCK_MAXTIMEOUT;
4556 static int _nfs4_proc_getlk(struct nfs4_state *state, int cmd, struct file_lock *request)
4558 struct inode *inode = state->inode;
4559 struct nfs_server *server = NFS_SERVER(inode);
4560 struct nfs_client *clp = server->nfs_client;
4561 struct nfs_lockt_args arg = {
4562 .fh = NFS_FH(inode),
4565 struct nfs_lockt_res res = {
4568 struct rpc_message msg = {
4569 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCKT],
4572 .rpc_cred = state->owner->so_cred,
4574 struct nfs4_lock_state *lsp;
4577 arg.lock_owner.clientid = clp->cl_clientid;
4578 status = nfs4_set_lock_state(state, request);
4581 lsp = request->fl_u.nfs4_fl.owner;
4582 arg.lock_owner.id = lsp->ls_seqid.owner_id;
4583 arg.lock_owner.s_dev = server->s_dev;
4584 status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1);
4587 request->fl_type = F_UNLCK;
4589 case -NFS4ERR_DENIED:
4592 request->fl_ops->fl_release_private(request);
4597 static int nfs4_proc_getlk(struct nfs4_state *state, int cmd, struct file_lock *request)
4599 struct nfs4_exception exception = { };
4603 err = nfs4_handle_exception(NFS_SERVER(state->inode),
4604 _nfs4_proc_getlk(state, cmd, request),
4606 } while (exception.retry);
4610 static int do_vfs_lock(struct file *file, struct file_lock *fl)
4613 switch (fl->fl_flags & (FL_POSIX|FL_FLOCK)) {
4615 res = posix_lock_file_wait(file, fl);
4618 res = flock_lock_file_wait(file, fl);
4626 struct nfs4_unlockdata {
4627 struct nfs_locku_args arg;
4628 struct nfs_locku_res res;
4629 struct nfs4_lock_state *lsp;
4630 struct nfs_open_context *ctx;
4631 struct file_lock fl;
4632 const struct nfs_server *server;
4633 unsigned long timestamp;
4636 static struct nfs4_unlockdata *nfs4_alloc_unlockdata(struct file_lock *fl,
4637 struct nfs_open_context *ctx,
4638 struct nfs4_lock_state *lsp,
4639 struct nfs_seqid *seqid)
4641 struct nfs4_unlockdata *p;
4642 struct inode *inode = lsp->ls_state->inode;
4644 p = kzalloc(sizeof(*p), GFP_NOFS);
4647 p->arg.fh = NFS_FH(inode);
4649 p->arg.seqid = seqid;
4650 p->res.seqid = seqid;
4651 p->arg.stateid = &lsp->ls_stateid;
4653 atomic_inc(&lsp->ls_count);
4654 /* Ensure we don't close file until we're done freeing locks! */
4655 p->ctx = get_nfs_open_context(ctx);
4656 memcpy(&p->fl, fl, sizeof(p->fl));
4657 p->server = NFS_SERVER(inode);
4661 static void nfs4_locku_release_calldata(void *data)
4663 struct nfs4_unlockdata *calldata = data;
4664 nfs_free_seqid(calldata->arg.seqid);
4665 nfs4_put_lock_state(calldata->lsp);
4666 put_nfs_open_context(calldata->ctx);
4670 static void nfs4_locku_done(struct rpc_task *task, void *data)
4672 struct nfs4_unlockdata *calldata = data;
4674 if (!nfs4_sequence_done(task, &calldata->res.seq_res))
4676 switch (task->tk_status) {
4678 nfs4_stateid_copy(&calldata->lsp->ls_stateid,
4679 &calldata->res.stateid);
4680 renew_lease(calldata->server, calldata->timestamp);
4682 case -NFS4ERR_BAD_STATEID:
4683 case -NFS4ERR_OLD_STATEID:
4684 case -NFS4ERR_STALE_STATEID:
4685 case -NFS4ERR_EXPIRED:
4688 if (nfs4_async_handle_error(task, calldata->server, NULL) == -EAGAIN)
4689 rpc_restart_call_prepare(task);
4691 nfs_release_seqid(calldata->arg.seqid);
4694 static void nfs4_locku_prepare(struct rpc_task *task, void *data)
4696 struct nfs4_unlockdata *calldata = data;
4698 if (nfs_wait_on_sequence(calldata->arg.seqid, task) != 0)
4700 if (test_bit(NFS_LOCK_INITIALIZED, &calldata->lsp->ls_flags) == 0) {
4701 /* Note: exit _without_ running nfs4_locku_done */
4704 calldata->timestamp = jiffies;
4705 if (nfs4_setup_sequence(calldata->server,
4706 &calldata->arg.seq_args,
4707 &calldata->res.seq_res,
4709 nfs_release_seqid(calldata->arg.seqid);
4712 task->tk_action = NULL;
4714 nfs4_sequence_done(task, &calldata->res.seq_res);
4717 static const struct rpc_call_ops nfs4_locku_ops = {
4718 .rpc_call_prepare = nfs4_locku_prepare,
4719 .rpc_call_done = nfs4_locku_done,
4720 .rpc_release = nfs4_locku_release_calldata,
4723 static struct rpc_task *nfs4_do_unlck(struct file_lock *fl,
4724 struct nfs_open_context *ctx,
4725 struct nfs4_lock_state *lsp,
4726 struct nfs_seqid *seqid)
4728 struct nfs4_unlockdata *data;
4729 struct rpc_message msg = {
4730 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCKU],
4731 .rpc_cred = ctx->cred,
4733 struct rpc_task_setup task_setup_data = {
4734 .rpc_client = NFS_CLIENT(lsp->ls_state->inode),
4735 .rpc_message = &msg,
4736 .callback_ops = &nfs4_locku_ops,
4737 .workqueue = nfsiod_workqueue,
4738 .flags = RPC_TASK_ASYNC,
4741 /* Ensure this is an unlock - when canceling a lock, the
4742 * canceled lock is passed in, and it won't be an unlock.
4744 fl->fl_type = F_UNLCK;
4746 data = nfs4_alloc_unlockdata(fl, ctx, lsp, seqid);
4748 nfs_free_seqid(seqid);
4749 return ERR_PTR(-ENOMEM);
4752 nfs41_init_sequence(&data->arg.seq_args, &data->res.seq_res, 1);
4753 msg.rpc_argp = &data->arg;
4754 msg.rpc_resp = &data->res;
4755 task_setup_data.callback_data = data;
4756 return rpc_run_task(&task_setup_data);
4759 static int nfs4_proc_unlck(struct nfs4_state *state, int cmd, struct file_lock *request)
4761 struct inode *inode = state->inode;
4762 struct nfs4_state_owner *sp = state->owner;
4763 struct nfs_inode *nfsi = NFS_I(inode);
4764 struct nfs_seqid *seqid;
4765 struct nfs4_lock_state *lsp;
4766 struct rpc_task *task;
4768 unsigned char fl_flags = request->fl_flags;
4770 status = nfs4_set_lock_state(state, request);
4771 /* Unlock _before_ we do the RPC call */
4772 request->fl_flags |= FL_EXISTS;
4773 /* Exclude nfs_delegation_claim_locks() */
4774 mutex_lock(&sp->so_delegreturn_mutex);
4775 /* Exclude nfs4_reclaim_open_stateid() - note nesting! */
4776 down_read(&nfsi->rwsem);
4777 if (do_vfs_lock(request->fl_file, request) == -ENOENT) {
4778 up_read(&nfsi->rwsem);
4779 mutex_unlock(&sp->so_delegreturn_mutex);
4782 up_read(&nfsi->rwsem);
4783 mutex_unlock(&sp->so_delegreturn_mutex);
4786 /* Is this a delegated lock? */
4787 lsp = request->fl_u.nfs4_fl.owner;
4788 if (test_bit(NFS_LOCK_INITIALIZED, &lsp->ls_flags) == 0)
4790 seqid = nfs_alloc_seqid(&lsp->ls_seqid, GFP_KERNEL);
4794 task = nfs4_do_unlck(request, nfs_file_open_context(request->fl_file), lsp, seqid);
4795 status = PTR_ERR(task);
4798 status = nfs4_wait_for_completion_rpc_task(task);
4801 request->fl_flags = fl_flags;
4805 struct nfs4_lockdata {
4806 struct nfs_lock_args arg;
4807 struct nfs_lock_res res;
4808 struct nfs4_lock_state *lsp;
4809 struct nfs_open_context *ctx;
4810 struct file_lock fl;
4811 unsigned long timestamp;
4814 struct nfs_server *server;
4817 static struct nfs4_lockdata *nfs4_alloc_lockdata(struct file_lock *fl,
4818 struct nfs_open_context *ctx, struct nfs4_lock_state *lsp,
4821 struct nfs4_lockdata *p;
4822 struct inode *inode = lsp->ls_state->inode;
4823 struct nfs_server *server = NFS_SERVER(inode);
4825 p = kzalloc(sizeof(*p), gfp_mask);
4829 p->arg.fh = NFS_FH(inode);
4831 p->arg.open_seqid = nfs_alloc_seqid(&lsp->ls_state->owner->so_seqid, gfp_mask);
4832 if (p->arg.open_seqid == NULL)
4834 p->arg.lock_seqid = nfs_alloc_seqid(&lsp->ls_seqid, gfp_mask);
4835 if (p->arg.lock_seqid == NULL)
4836 goto out_free_seqid;
4837 p->arg.lock_stateid = &lsp->ls_stateid;
4838 p->arg.lock_owner.clientid = server->nfs_client->cl_clientid;
4839 p->arg.lock_owner.id = lsp->ls_seqid.owner_id;
4840 p->arg.lock_owner.s_dev = server->s_dev;
4841 p->res.lock_seqid = p->arg.lock_seqid;
4844 atomic_inc(&lsp->ls_count);
4845 p->ctx = get_nfs_open_context(ctx);
4846 memcpy(&p->fl, fl, sizeof(p->fl));
4849 nfs_free_seqid(p->arg.open_seqid);
4855 static void nfs4_lock_prepare(struct rpc_task *task, void *calldata)
4857 struct nfs4_lockdata *data = calldata;
4858 struct nfs4_state *state = data->lsp->ls_state;
4860 dprintk("%s: begin!\n", __func__);
4861 if (nfs_wait_on_sequence(data->arg.lock_seqid, task) != 0)
4863 /* Do we need to do an open_to_lock_owner? */
4864 if (!(data->arg.lock_seqid->sequence->flags & NFS_SEQID_CONFIRMED)) {
4865 if (nfs_wait_on_sequence(data->arg.open_seqid, task) != 0) {
4866 goto out_release_lock_seqid;
4868 data->arg.open_stateid = &state->open_stateid;
4869 data->arg.new_lock_owner = 1;
4870 data->res.open_seqid = data->arg.open_seqid;
4872 data->arg.new_lock_owner = 0;
4873 if (!nfs4_valid_open_stateid(state)) {
4874 data->rpc_status = -EBADF;
4875 task->tk_action = NULL;
4876 goto out_release_open_seqid;
4878 data->timestamp = jiffies;
4879 if (nfs4_setup_sequence(data->server,
4880 &data->arg.seq_args,
4884 out_release_open_seqid:
4885 nfs_release_seqid(data->arg.open_seqid);
4886 out_release_lock_seqid:
4887 nfs_release_seqid(data->arg.lock_seqid);
4889 nfs4_sequence_done(task, &data->res.seq_res);
4890 dprintk("%s: done!, ret = %d\n", __func__, data->rpc_status);
4893 static void nfs4_lock_done(struct rpc_task *task, void *calldata)
4895 struct nfs4_lockdata *data = calldata;
4897 dprintk("%s: begin!\n", __func__);
4899 if (!nfs4_sequence_done(task, &data->res.seq_res))
4902 data->rpc_status = task->tk_status;
4903 if (data->arg.new_lock_owner != 0) {
4904 if (data->rpc_status == 0)
4905 nfs_confirm_seqid(&data->lsp->ls_seqid, 0);
4909 if (data->rpc_status == 0) {
4910 nfs4_stateid_copy(&data->lsp->ls_stateid, &data->res.stateid);
4911 set_bit(NFS_LOCK_INITIALIZED, &data->lsp->ls_flags);
4912 renew_lease(NFS_SERVER(data->ctx->dentry->d_inode), data->timestamp);
4915 dprintk("%s: done, ret = %d!\n", __func__, data->rpc_status);
4918 static void nfs4_lock_release(void *calldata)
4920 struct nfs4_lockdata *data = calldata;
4922 dprintk("%s: begin!\n", __func__);
4923 nfs_free_seqid(data->arg.open_seqid);
4924 if (data->cancelled != 0) {
4925 struct rpc_task *task;
4926 task = nfs4_do_unlck(&data->fl, data->ctx, data->lsp,
4927 data->arg.lock_seqid);
4929 rpc_put_task_async(task);
4930 dprintk("%s: cancelling lock!\n", __func__);
4932 nfs_free_seqid(data->arg.lock_seqid);
4933 nfs4_put_lock_state(data->lsp);
4934 put_nfs_open_context(data->ctx);
4936 dprintk("%s: done!\n", __func__);
4939 static const struct rpc_call_ops nfs4_lock_ops = {
4940 .rpc_call_prepare = nfs4_lock_prepare,
4941 .rpc_call_done = nfs4_lock_done,
4942 .rpc_release = nfs4_lock_release,
4945 static void nfs4_handle_setlk_error(struct nfs_server *server, struct nfs4_lock_state *lsp, int new_lock_owner, int error)
4948 case -NFS4ERR_ADMIN_REVOKED:
4949 case -NFS4ERR_BAD_STATEID:
4950 lsp->ls_seqid.flags &= ~NFS_SEQID_CONFIRMED;
4951 if (new_lock_owner != 0 ||
4952 test_bit(NFS_LOCK_INITIALIZED, &lsp->ls_flags) != 0)
4953 nfs4_schedule_stateid_recovery(server, lsp->ls_state);
4955 case -NFS4ERR_STALE_STATEID:
4956 lsp->ls_seqid.flags &= ~NFS_SEQID_CONFIRMED;
4957 case -NFS4ERR_EXPIRED:
4958 nfs4_schedule_lease_recovery(server->nfs_client);
4962 static int _nfs4_do_setlk(struct nfs4_state *state, int cmd, struct file_lock *fl, int recovery_type)
4964 struct nfs4_lockdata *data;
4965 struct rpc_task *task;
4966 struct rpc_message msg = {
4967 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCK],
4968 .rpc_cred = state->owner->so_cred,
4970 struct rpc_task_setup task_setup_data = {
4971 .rpc_client = NFS_CLIENT(state->inode),
4972 .rpc_message = &msg,
4973 .callback_ops = &nfs4_lock_ops,
4974 .workqueue = nfsiod_workqueue,
4975 .flags = RPC_TASK_ASYNC,
4979 dprintk("%s: begin!\n", __func__);
4980 data = nfs4_alloc_lockdata(fl, nfs_file_open_context(fl->fl_file),
4981 fl->fl_u.nfs4_fl.owner,
4982 recovery_type == NFS_LOCK_NEW ? GFP_KERNEL : GFP_NOFS);
4986 data->arg.block = 1;
4987 nfs41_init_sequence(&data->arg.seq_args, &data->res.seq_res, 1);
4988 msg.rpc_argp = &data->arg;
4989 msg.rpc_resp = &data->res;
4990 task_setup_data.callback_data = data;
4991 if (recovery_type > NFS_LOCK_NEW) {
4992 if (recovery_type == NFS_LOCK_RECLAIM)
4993 data->arg.reclaim = NFS_LOCK_RECLAIM;
4994 nfs4_set_sequence_privileged(&data->arg.seq_args);
4996 task = rpc_run_task(&task_setup_data);
4998 return PTR_ERR(task);
4999 ret = nfs4_wait_for_completion_rpc_task(task);
5001 ret = data->rpc_status;
5003 nfs4_handle_setlk_error(data->server, data->lsp,
5004 data->arg.new_lock_owner, ret);
5006 data->cancelled = 1;
5008 dprintk("%s: done, ret = %d!\n", __func__, ret);
5012 static int nfs4_lock_reclaim(struct nfs4_state *state, struct file_lock *request)
5014 struct nfs_server *server = NFS_SERVER(state->inode);
5015 struct nfs4_exception exception = {
5016 .inode = state->inode,
5021 /* Cache the lock if possible... */
5022 if (test_bit(NFS_DELEGATED_STATE, &state->flags) != 0)
5024 err = _nfs4_do_setlk(state, F_SETLK, request, NFS_LOCK_RECLAIM);
5025 if (err != -NFS4ERR_DELAY)
5027 nfs4_handle_exception(server, err, &exception);
5028 } while (exception.retry);
5032 static int nfs4_lock_expired(struct nfs4_state *state, struct file_lock *request)
5034 struct nfs_server *server = NFS_SERVER(state->inode);
5035 struct nfs4_exception exception = {
5036 .inode = state->inode,
5040 err = nfs4_set_lock_state(state, request);
5044 if (test_bit(NFS_DELEGATED_STATE, &state->flags) != 0)
5046 err = _nfs4_do_setlk(state, F_SETLK, request, NFS_LOCK_EXPIRED);
5050 case -NFS4ERR_GRACE:
5051 case -NFS4ERR_DELAY:
5052 nfs4_handle_exception(server, err, &exception);
5055 } while (exception.retry);
5060 #if defined(CONFIG_NFS_V4_1)
5062 * nfs41_check_expired_locks - possibly free a lock stateid
5064 * @state: NFSv4 state for an inode
5066 * Returns NFS_OK if recovery for this stateid is now finished.
5067 * Otherwise a negative NFS4ERR value is returned.
5069 static int nfs41_check_expired_locks(struct nfs4_state *state)
5071 int status, ret = -NFS4ERR_BAD_STATEID;
5072 struct nfs4_lock_state *lsp;
5073 struct nfs_server *server = NFS_SERVER(state->inode);
5075 list_for_each_entry(lsp, &state->lock_states, ls_locks) {
5076 if (test_bit(NFS_LOCK_INITIALIZED, &lsp->ls_flags)) {
5077 struct rpc_cred *cred = lsp->ls_state->owner->so_cred;
5079 status = nfs41_test_stateid(server,
5082 if (status != NFS_OK) {
5083 /* Free the stateid unless the server
5084 * informs us the stateid is unrecognized. */
5085 if (status != -NFS4ERR_BAD_STATEID)
5086 nfs41_free_stateid(server,
5089 clear_bit(NFS_LOCK_INITIALIZED, &lsp->ls_flags);
5098 static int nfs41_lock_expired(struct nfs4_state *state, struct file_lock *request)
5100 int status = NFS_OK;
5102 if (test_bit(LK_STATE_IN_USE, &state->flags))
5103 status = nfs41_check_expired_locks(state);
5104 if (status != NFS_OK)
5105 status = nfs4_lock_expired(state, request);
5110 static int _nfs4_proc_setlk(struct nfs4_state *state, int cmd, struct file_lock *request)
5112 struct nfs4_state_owner *sp = state->owner;
5113 struct nfs_inode *nfsi = NFS_I(state->inode);
5114 unsigned char fl_flags = request->fl_flags;
5116 int status = -ENOLCK;
5118 if ((fl_flags & FL_POSIX) &&
5119 !test_bit(NFS_STATE_POSIX_LOCKS, &state->flags))
5121 /* Is this a delegated open? */
5122 status = nfs4_set_lock_state(state, request);
5125 request->fl_flags |= FL_ACCESS;
5126 status = do_vfs_lock(request->fl_file, request);
5129 down_read(&nfsi->rwsem);
5130 if (test_bit(NFS_DELEGATED_STATE, &state->flags)) {
5131 /* Yes: cache locks! */
5132 /* ...but avoid races with delegation recall... */
5133 request->fl_flags = fl_flags & ~FL_SLEEP;
5134 status = do_vfs_lock(request->fl_file, request);
5137 seq = raw_seqcount_begin(&sp->so_reclaim_seqcount);
5138 up_read(&nfsi->rwsem);
5139 status = _nfs4_do_setlk(state, cmd, request, NFS_LOCK_NEW);
5142 down_read(&nfsi->rwsem);
5143 if (read_seqcount_retry(&sp->so_reclaim_seqcount, seq)) {
5144 status = -NFS4ERR_DELAY;
5147 /* Note: we always want to sleep here! */
5148 request->fl_flags = fl_flags | FL_SLEEP;
5149 if (do_vfs_lock(request->fl_file, request) < 0)
5150 printk(KERN_WARNING "NFS: %s: VFS is out of sync with lock "
5151 "manager!\n", __func__);
5153 up_read(&nfsi->rwsem);
5155 request->fl_flags = fl_flags;
5159 static int nfs4_proc_setlk(struct nfs4_state *state, int cmd, struct file_lock *request)
5161 struct nfs4_exception exception = {
5163 .inode = state->inode,
5168 err = _nfs4_proc_setlk(state, cmd, request);
5169 if (err == -NFS4ERR_DENIED)
5171 err = nfs4_handle_exception(NFS_SERVER(state->inode),
5173 } while (exception.retry);
5178 nfs4_proc_lock(struct file *filp, int cmd, struct file_lock *request)
5180 struct nfs_open_context *ctx;
5181 struct nfs4_state *state;
5182 unsigned long timeout = NFS4_LOCK_MINTIMEOUT;
5185 /* verify open state */
5186 ctx = nfs_file_open_context(filp);
5189 if (request->fl_start < 0 || request->fl_end < 0)
5192 if (IS_GETLK(cmd)) {
5194 return nfs4_proc_getlk(state, F_GETLK, request);
5198 if (!(IS_SETLK(cmd) || IS_SETLKW(cmd)))
5201 if (request->fl_type == F_UNLCK) {
5203 return nfs4_proc_unlck(state, cmd, request);
5210 * Don't rely on the VFS having checked the file open mode,
5211 * since it won't do this for flock() locks.
5213 switch (request->fl_type) {
5215 if (!(filp->f_mode & FMODE_READ))
5219 if (!(filp->f_mode & FMODE_WRITE))
5224 status = nfs4_proc_setlk(state, cmd, request);
5225 if ((status != -EAGAIN) || IS_SETLK(cmd))
5227 timeout = nfs4_set_lock_task_retry(timeout);
5228 status = -ERESTARTSYS;
5231 } while(status < 0);
5235 int nfs4_lock_delegation_recall(struct file_lock *fl, struct nfs4_state *state, const nfs4_stateid *stateid)
5237 struct nfs_server *server = NFS_SERVER(state->inode);
5240 err = nfs4_set_lock_state(state, fl);
5243 err = _nfs4_do_setlk(state, F_SETLK, fl, NFS_LOCK_NEW);
5244 return nfs4_handle_delegation_recall_error(server, state, stateid, err);
5247 struct nfs_release_lockowner_data {
5248 struct nfs4_lock_state *lsp;
5249 struct nfs_server *server;
5250 struct nfs_release_lockowner_args args;
5253 static void nfs4_release_lockowner_release(void *calldata)
5255 struct nfs_release_lockowner_data *data = calldata;
5256 nfs4_free_lock_state(data->server, data->lsp);
5260 static const struct rpc_call_ops nfs4_release_lockowner_ops = {
5261 .rpc_release = nfs4_release_lockowner_release,
5264 static int nfs4_release_lockowner(struct nfs_server *server, struct nfs4_lock_state *lsp)
5266 struct nfs_release_lockowner_data *data;
5267 struct rpc_message msg = {
5268 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RELEASE_LOCKOWNER],
5271 if (server->nfs_client->cl_mvops->minor_version != 0)
5273 data = kmalloc(sizeof(*data), GFP_NOFS);
5277 data->server = server;
5278 data->args.lock_owner.clientid = server->nfs_client->cl_clientid;
5279 data->args.lock_owner.id = lsp->ls_seqid.owner_id;
5280 data->args.lock_owner.s_dev = server->s_dev;
5281 msg.rpc_argp = &data->args;
5282 rpc_call_async(server->client, &msg, 0, &nfs4_release_lockowner_ops, data);
5286 #define XATTR_NAME_NFSV4_ACL "system.nfs4_acl"
5288 static int nfs4_xattr_set_nfs4_acl(struct dentry *dentry, const char *key,
5289 const void *buf, size_t buflen,
5290 int flags, int type)
5292 if (strcmp(key, "") != 0)
5295 return nfs4_proc_set_acl(dentry->d_inode, buf, buflen);
5298 static int nfs4_xattr_get_nfs4_acl(struct dentry *dentry, const char *key,
5299 void *buf, size_t buflen, int type)
5301 if (strcmp(key, "") != 0)
5304 return nfs4_proc_get_acl(dentry->d_inode, buf, buflen);
5307 static size_t nfs4_xattr_list_nfs4_acl(struct dentry *dentry, char *list,
5308 size_t list_len, const char *name,
5309 size_t name_len, int type)
5311 size_t len = sizeof(XATTR_NAME_NFSV4_ACL);
5313 if (!nfs4_server_supports_acls(NFS_SERVER(dentry->d_inode)))
5316 if (list && len <= list_len)
5317 memcpy(list, XATTR_NAME_NFSV4_ACL, len);
5322 * nfs_fhget will use either the mounted_on_fileid or the fileid
5324 static void nfs_fixup_referral_attributes(struct nfs_fattr *fattr)
5326 if (!(((fattr->valid & NFS_ATTR_FATTR_MOUNTED_ON_FILEID) ||
5327 (fattr->valid & NFS_ATTR_FATTR_FILEID)) &&
5328 (fattr->valid & NFS_ATTR_FATTR_FSID) &&
5329 (fattr->valid & NFS_ATTR_FATTR_V4_LOCATIONS)))
5332 fattr->valid |= NFS_ATTR_FATTR_TYPE | NFS_ATTR_FATTR_MODE |
5333 NFS_ATTR_FATTR_NLINK | NFS_ATTR_FATTR_V4_REFERRAL;
5334 fattr->mode = S_IFDIR | S_IRUGO | S_IXUGO;
5338 static int _nfs4_proc_fs_locations(struct rpc_clnt *client, struct inode *dir,
5339 const struct qstr *name,
5340 struct nfs4_fs_locations *fs_locations,
5343 struct nfs_server *server = NFS_SERVER(dir);
5345 [0] = FATTR4_WORD0_FSID | FATTR4_WORD0_FS_LOCATIONS,
5347 struct nfs4_fs_locations_arg args = {
5348 .dir_fh = NFS_FH(dir),
5353 struct nfs4_fs_locations_res res = {
5354 .fs_locations = fs_locations,
5356 struct rpc_message msg = {
5357 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FS_LOCATIONS],
5363 dprintk("%s: start\n", __func__);
5365 /* Ask for the fileid of the absent filesystem if mounted_on_fileid
5366 * is not supported */
5367 if (NFS_SERVER(dir)->attr_bitmask[1] & FATTR4_WORD1_MOUNTED_ON_FILEID)
5368 bitmask[1] |= FATTR4_WORD1_MOUNTED_ON_FILEID;
5370 bitmask[0] |= FATTR4_WORD0_FILEID;
5372 nfs_fattr_init(&fs_locations->fattr);
5373 fs_locations->server = server;
5374 fs_locations->nlocations = 0;
5375 status = nfs4_call_sync(client, server, &msg, &args.seq_args, &res.seq_res, 0);
5376 dprintk("%s: returned status = %d\n", __func__, status);
5380 int nfs4_proc_fs_locations(struct rpc_clnt *client, struct inode *dir,
5381 const struct qstr *name,
5382 struct nfs4_fs_locations *fs_locations,
5385 struct nfs4_exception exception = { };
5388 err = nfs4_handle_exception(NFS_SERVER(dir),
5389 _nfs4_proc_fs_locations(client, dir, name, fs_locations, page),
5391 } while (exception.retry);
5395 static int _nfs4_proc_secinfo(struct inode *dir, const struct qstr *name, struct nfs4_secinfo_flavors *flavors)
5398 struct nfs4_secinfo_arg args = {
5399 .dir_fh = NFS_FH(dir),
5402 struct nfs4_secinfo_res res = {
5405 struct rpc_message msg = {
5406 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SECINFO],
5411 dprintk("NFS call secinfo %s\n", name->name);
5412 status = nfs4_call_sync(NFS_SERVER(dir)->client, NFS_SERVER(dir), &msg, &args.seq_args, &res.seq_res, 0);
5413 dprintk("NFS reply secinfo: %d\n", status);
5417 int nfs4_proc_secinfo(struct inode *dir, const struct qstr *name,
5418 struct nfs4_secinfo_flavors *flavors)
5420 struct nfs4_exception exception = { };
5423 err = nfs4_handle_exception(NFS_SERVER(dir),
5424 _nfs4_proc_secinfo(dir, name, flavors),
5426 } while (exception.retry);
5430 #ifdef CONFIG_NFS_V4_1
5432 * Check the exchange flags returned by the server for invalid flags, having
5433 * both PNFS and NON_PNFS flags set, and not having one of NON_PNFS, PNFS, or
5436 static int nfs4_check_cl_exchange_flags(u32 flags)
5438 if (flags & ~EXCHGID4_FLAG_MASK_R)
5440 if ((flags & EXCHGID4_FLAG_USE_PNFS_MDS) &&
5441 (flags & EXCHGID4_FLAG_USE_NON_PNFS))
5443 if (!(flags & (EXCHGID4_FLAG_MASK_PNFS)))
5447 return -NFS4ERR_INVAL;
5451 nfs41_same_server_scope(struct nfs41_server_scope *a,
5452 struct nfs41_server_scope *b)
5454 if (a->server_scope_sz == b->server_scope_sz &&
5455 memcmp(a->server_scope, b->server_scope, a->server_scope_sz) == 0)
5462 * nfs4_proc_bind_conn_to_session()
5464 * The 4.1 client currently uses the same TCP connection for the
5465 * fore and backchannel.
5467 int nfs4_proc_bind_conn_to_session(struct nfs_client *clp, struct rpc_cred *cred)
5470 struct nfs41_bind_conn_to_session_res res;
5471 struct rpc_message msg = {
5473 &nfs4_procedures[NFSPROC4_CLNT_BIND_CONN_TO_SESSION],
5479 dprintk("--> %s\n", __func__);
5481 res.session = kzalloc(sizeof(struct nfs4_session), GFP_NOFS);
5482 if (unlikely(res.session == NULL)) {
5487 status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT);
5489 if (memcmp(res.session->sess_id.data,
5490 clp->cl_session->sess_id.data, NFS4_MAX_SESSIONID_LEN)) {
5491 dprintk("NFS: %s: Session ID mismatch\n", __func__);
5495 if (res.dir != NFS4_CDFS4_BOTH) {
5496 dprintk("NFS: %s: Unexpected direction from server\n",
5501 if (res.use_conn_in_rdma_mode) {
5502 dprintk("NFS: %s: Server returned RDMA mode = true\n",
5511 dprintk("<-- %s status= %d\n", __func__, status);
5516 * nfs4_proc_exchange_id()
5518 * Returns zero, a negative errno, or a negative NFS4ERR status code.
5520 * Since the clientid has expired, all compounds using sessions
5521 * associated with the stale clientid will be returning
5522 * NFS4ERR_BADSESSION in the sequence operation, and will therefore
5523 * be in some phase of session reset.
5525 int nfs4_proc_exchange_id(struct nfs_client *clp, struct rpc_cred *cred)
5527 nfs4_verifier verifier;
5528 struct nfs41_exchange_id_args args = {
5529 .verifier = &verifier,
5531 .flags = EXCHGID4_FLAG_SUPP_MOVED_REFER,
5533 struct nfs41_exchange_id_res res = {
5537 struct rpc_message msg = {
5538 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_EXCHANGE_ID],
5544 nfs4_init_boot_verifier(clp, &verifier);
5545 args.id_len = nfs4_init_uniform_client_string(clp, args.id,
5547 dprintk("NFS call exchange_id auth=%s, '%.*s'\n",
5548 clp->cl_rpcclient->cl_auth->au_ops->au_name,
5549 args.id_len, args.id);
5551 res.server_owner = kzalloc(sizeof(struct nfs41_server_owner),
5553 if (unlikely(res.server_owner == NULL)) {
5558 res.server_scope = kzalloc(sizeof(struct nfs41_server_scope),
5560 if (unlikely(res.server_scope == NULL)) {
5562 goto out_server_owner;
5565 res.impl_id = kzalloc(sizeof(struct nfs41_impl_id), GFP_NOFS);
5566 if (unlikely(res.impl_id == NULL)) {
5568 goto out_server_scope;
5571 status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT);
5573 status = nfs4_check_cl_exchange_flags(res.flags);
5576 clp->cl_clientid = res.clientid;
5577 clp->cl_exchange_flags = (res.flags & ~EXCHGID4_FLAG_CONFIRMED_R);
5578 if (!(res.flags & EXCHGID4_FLAG_CONFIRMED_R))
5579 clp->cl_seqid = res.seqid;
5581 kfree(clp->cl_serverowner);
5582 clp->cl_serverowner = res.server_owner;
5583 res.server_owner = NULL;
5585 /* use the most recent implementation id */
5586 kfree(clp->cl_implid);
5587 clp->cl_implid = res.impl_id;
5589 if (clp->cl_serverscope != NULL &&
5590 !nfs41_same_server_scope(clp->cl_serverscope,
5591 res.server_scope)) {
5592 dprintk("%s: server_scope mismatch detected\n",
5594 set_bit(NFS4CLNT_SERVER_SCOPE_MISMATCH, &clp->cl_state);
5595 kfree(clp->cl_serverscope);
5596 clp->cl_serverscope = NULL;
5599 if (clp->cl_serverscope == NULL) {
5600 clp->cl_serverscope = res.server_scope;
5607 kfree(res.server_owner);
5609 kfree(res.server_scope);
5611 if (clp->cl_implid != NULL)
5612 dprintk("NFS reply exchange_id: Server Implementation ID: "
5613 "domain: %s, name: %s, date: %llu,%u\n",
5614 clp->cl_implid->domain, clp->cl_implid->name,
5615 clp->cl_implid->date.seconds,
5616 clp->cl_implid->date.nseconds);
5617 dprintk("NFS reply exchange_id: %d\n", status);
5621 static int _nfs4_proc_destroy_clientid(struct nfs_client *clp,
5622 struct rpc_cred *cred)
5624 struct rpc_message msg = {
5625 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DESTROY_CLIENTID],
5631 status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT);
5633 dprintk("NFS: Got error %d from the server %s on "
5634 "DESTROY_CLIENTID.", status, clp->cl_hostname);
5638 static int nfs4_proc_destroy_clientid(struct nfs_client *clp,
5639 struct rpc_cred *cred)
5644 for (loop = NFS4_MAX_LOOP_ON_RECOVER; loop != 0; loop--) {
5645 ret = _nfs4_proc_destroy_clientid(clp, cred);
5647 case -NFS4ERR_DELAY:
5648 case -NFS4ERR_CLIENTID_BUSY:
5658 int nfs4_destroy_clientid(struct nfs_client *clp)
5660 struct rpc_cred *cred;
5663 if (clp->cl_mvops->minor_version < 1)
5665 if (clp->cl_exchange_flags == 0)
5667 if (clp->cl_preserve_clid)
5669 cred = nfs4_get_exchange_id_cred(clp);
5670 ret = nfs4_proc_destroy_clientid(clp, cred);
5675 case -NFS4ERR_STALE_CLIENTID:
5676 clp->cl_exchange_flags = 0;
5682 struct nfs4_get_lease_time_data {
5683 struct nfs4_get_lease_time_args *args;
5684 struct nfs4_get_lease_time_res *res;
5685 struct nfs_client *clp;
5688 static void nfs4_get_lease_time_prepare(struct rpc_task *task,
5691 struct nfs4_get_lease_time_data *data =
5692 (struct nfs4_get_lease_time_data *)calldata;
5694 dprintk("--> %s\n", __func__);
5695 /* just setup sequence, do not trigger session recovery
5696 since we're invoked within one */
5697 nfs41_setup_sequence(data->clp->cl_session,
5698 &data->args->la_seq_args,
5699 &data->res->lr_seq_res,
5701 dprintk("<-- %s\n", __func__);
5705 * Called from nfs4_state_manager thread for session setup, so don't recover
5706 * from sequence operation or clientid errors.
5708 static void nfs4_get_lease_time_done(struct rpc_task *task, void *calldata)
5710 struct nfs4_get_lease_time_data *data =
5711 (struct nfs4_get_lease_time_data *)calldata;
5713 dprintk("--> %s\n", __func__);
5714 if (!nfs41_sequence_done(task, &data->res->lr_seq_res))
5716 switch (task->tk_status) {
5717 case -NFS4ERR_DELAY:
5718 case -NFS4ERR_GRACE:
5719 dprintk("%s Retry: tk_status %d\n", __func__, task->tk_status);
5720 rpc_delay(task, NFS4_POLL_RETRY_MIN);
5721 task->tk_status = 0;
5723 case -NFS4ERR_RETRY_UNCACHED_REP:
5724 rpc_restart_call_prepare(task);
5727 dprintk("<-- %s\n", __func__);
5730 static const struct rpc_call_ops nfs4_get_lease_time_ops = {
5731 .rpc_call_prepare = nfs4_get_lease_time_prepare,
5732 .rpc_call_done = nfs4_get_lease_time_done,
5735 int nfs4_proc_get_lease_time(struct nfs_client *clp, struct nfs_fsinfo *fsinfo)
5737 struct rpc_task *task;
5738 struct nfs4_get_lease_time_args args;
5739 struct nfs4_get_lease_time_res res = {
5740 .lr_fsinfo = fsinfo,
5742 struct nfs4_get_lease_time_data data = {
5747 struct rpc_message msg = {
5748 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GET_LEASE_TIME],
5752 struct rpc_task_setup task_setup = {
5753 .rpc_client = clp->cl_rpcclient,
5754 .rpc_message = &msg,
5755 .callback_ops = &nfs4_get_lease_time_ops,
5756 .callback_data = &data,
5757 .flags = RPC_TASK_TIMEOUT,
5761 nfs41_init_sequence(&args.la_seq_args, &res.lr_seq_res, 0);
5762 nfs4_set_sequence_privileged(&args.la_seq_args);
5763 dprintk("--> %s\n", __func__);
5764 task = rpc_run_task(&task_setup);
5767 status = PTR_ERR(task);
5769 status = task->tk_status;
5772 dprintk("<-- %s return %d\n", __func__, status);
5778 * Initialize the values to be used by the client in CREATE_SESSION
5779 * If nfs4_init_session set the fore channel request and response sizes,
5782 * Set the back channel max_resp_sz_cached to zero to force the client to
5783 * always set csa_cachethis to FALSE because the current implementation
5784 * of the back channel DRC only supports caching the CB_SEQUENCE operation.
5786 static void nfs4_init_channel_attrs(struct nfs41_create_session_args *args)
5788 struct nfs4_session *session = args->client->cl_session;
5789 unsigned int mxrqst_sz = session->fc_target_max_rqst_sz,
5790 mxresp_sz = session->fc_target_max_resp_sz;
5793 mxrqst_sz = NFS_MAX_FILE_IO_SIZE;
5795 mxresp_sz = NFS_MAX_FILE_IO_SIZE;
5796 /* Fore channel attributes */
5797 args->fc_attrs.max_rqst_sz = mxrqst_sz;
5798 args->fc_attrs.max_resp_sz = mxresp_sz;
5799 args->fc_attrs.max_ops = NFS4_MAX_OPS;
5800 args->fc_attrs.max_reqs = max_session_slots;
5802 dprintk("%s: Fore Channel : max_rqst_sz=%u max_resp_sz=%u "
5803 "max_ops=%u max_reqs=%u\n",
5805 args->fc_attrs.max_rqst_sz, args->fc_attrs.max_resp_sz,
5806 args->fc_attrs.max_ops, args->fc_attrs.max_reqs);
5808 /* Back channel attributes */
5809 args->bc_attrs.max_rqst_sz = PAGE_SIZE;
5810 args->bc_attrs.max_resp_sz = PAGE_SIZE;
5811 args->bc_attrs.max_resp_sz_cached = 0;
5812 args->bc_attrs.max_ops = NFS4_MAX_BACK_CHANNEL_OPS;
5813 args->bc_attrs.max_reqs = 1;
5815 dprintk("%s: Back Channel : max_rqst_sz=%u max_resp_sz=%u "
5816 "max_resp_sz_cached=%u max_ops=%u max_reqs=%u\n",
5818 args->bc_attrs.max_rqst_sz, args->bc_attrs.max_resp_sz,
5819 args->bc_attrs.max_resp_sz_cached, args->bc_attrs.max_ops,
5820 args->bc_attrs.max_reqs);
5823 static int nfs4_verify_fore_channel_attrs(struct nfs41_create_session_args *args, struct nfs4_session *session)
5825 struct nfs4_channel_attrs *sent = &args->fc_attrs;
5826 struct nfs4_channel_attrs *rcvd = &session->fc_attrs;
5828 if (rcvd->max_resp_sz > sent->max_resp_sz)
5831 * Our requested max_ops is the minimum we need; we're not
5832 * prepared to break up compounds into smaller pieces than that.
5833 * So, no point even trying to continue if the server won't
5836 if (rcvd->max_ops < sent->max_ops)
5838 if (rcvd->max_reqs == 0)
5840 if (rcvd->max_reqs > NFS4_MAX_SLOT_TABLE)
5841 rcvd->max_reqs = NFS4_MAX_SLOT_TABLE;
5845 static int nfs4_verify_back_channel_attrs(struct nfs41_create_session_args *args, struct nfs4_session *session)
5847 struct nfs4_channel_attrs *sent = &args->bc_attrs;
5848 struct nfs4_channel_attrs *rcvd = &session->bc_attrs;
5850 if (rcvd->max_rqst_sz > sent->max_rqst_sz)
5852 if (rcvd->max_resp_sz < sent->max_resp_sz)
5854 if (rcvd->max_resp_sz_cached > sent->max_resp_sz_cached)
5856 /* These would render the backchannel useless: */
5857 if (rcvd->max_ops != sent->max_ops)
5859 if (rcvd->max_reqs != sent->max_reqs)
5864 static int nfs4_verify_channel_attrs(struct nfs41_create_session_args *args,
5865 struct nfs4_session *session)
5869 ret = nfs4_verify_fore_channel_attrs(args, session);
5872 return nfs4_verify_back_channel_attrs(args, session);
5875 static int _nfs4_proc_create_session(struct nfs_client *clp,
5876 struct rpc_cred *cred)
5878 struct nfs4_session *session = clp->cl_session;
5879 struct nfs41_create_session_args args = {
5881 .cb_program = NFS4_CALLBACK,
5883 struct nfs41_create_session_res res = {
5886 struct rpc_message msg = {
5887 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CREATE_SESSION],
5894 nfs4_init_channel_attrs(&args);
5895 args.flags = (SESSION4_PERSIST | SESSION4_BACK_CHAN);
5897 status = rpc_call_sync(session->clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT);
5900 /* Verify the session's negotiated channel_attrs values */
5901 status = nfs4_verify_channel_attrs(&args, session);
5902 /* Increment the clientid slot sequence id */
5910 * Issues a CREATE_SESSION operation to the server.
5911 * It is the responsibility of the caller to verify the session is
5912 * expired before calling this routine.
5914 int nfs4_proc_create_session(struct nfs_client *clp, struct rpc_cred *cred)
5918 struct nfs4_session *session = clp->cl_session;
5920 dprintk("--> %s clp=%p session=%p\n", __func__, clp, session);
5922 status = _nfs4_proc_create_session(clp, cred);
5926 /* Init or reset the session slot tables */
5927 status = nfs4_setup_session_slot_tables(session);
5928 dprintk("slot table setup returned %d\n", status);
5932 ptr = (unsigned *)&session->sess_id.data[0];
5933 dprintk("%s client>seqid %d sessionid %u:%u:%u:%u\n", __func__,
5934 clp->cl_seqid, ptr[0], ptr[1], ptr[2], ptr[3]);
5936 dprintk("<-- %s\n", __func__);
5941 * Issue the over-the-wire RPC DESTROY_SESSION.
5942 * The caller must serialize access to this routine.
5944 int nfs4_proc_destroy_session(struct nfs4_session *session,
5945 struct rpc_cred *cred)
5947 struct rpc_message msg = {
5948 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DESTROY_SESSION],
5949 .rpc_argp = session,
5954 dprintk("--> nfs4_proc_destroy_session\n");
5956 /* session is still being setup */
5957 if (session->clp->cl_cons_state != NFS_CS_READY)
5960 status = rpc_call_sync(session->clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT);
5963 dprintk("NFS: Got error %d from the server on DESTROY_SESSION. "
5964 "Session has been destroyed regardless...\n", status);
5966 dprintk("<-- nfs4_proc_destroy_session\n");
5971 * Renew the cl_session lease.
5973 struct nfs4_sequence_data {
5974 struct nfs_client *clp;
5975 struct nfs4_sequence_args args;
5976 struct nfs4_sequence_res res;
5979 static void nfs41_sequence_release(void *data)
5981 struct nfs4_sequence_data *calldata = data;
5982 struct nfs_client *clp = calldata->clp;
5984 if (atomic_read(&clp->cl_count) > 1)
5985 nfs4_schedule_state_renewal(clp);
5986 nfs_put_client(clp);
5990 static int nfs41_sequence_handle_errors(struct rpc_task *task, struct nfs_client *clp)
5992 switch(task->tk_status) {
5993 case -NFS4ERR_DELAY:
5994 rpc_delay(task, NFS4_POLL_RETRY_MAX);
5997 nfs4_schedule_lease_recovery(clp);
6002 static void nfs41_sequence_call_done(struct rpc_task *task, void *data)
6004 struct nfs4_sequence_data *calldata = data;
6005 struct nfs_client *clp = calldata->clp;
6007 if (!nfs41_sequence_done(task, task->tk_msg.rpc_resp))
6010 if (task->tk_status < 0) {
6011 dprintk("%s ERROR %d\n", __func__, task->tk_status);
6012 if (atomic_read(&clp->cl_count) == 1)
6015 if (nfs41_sequence_handle_errors(task, clp) == -EAGAIN) {
6016 rpc_restart_call_prepare(task);
6020 dprintk("%s rpc_cred %p\n", __func__, task->tk_msg.rpc_cred);
6022 dprintk("<-- %s\n", __func__);
6025 static void nfs41_sequence_prepare(struct rpc_task *task, void *data)
6027 struct nfs4_sequence_data *calldata = data;
6028 struct nfs_client *clp = calldata->clp;
6029 struct nfs4_sequence_args *args;
6030 struct nfs4_sequence_res *res;
6032 args = task->tk_msg.rpc_argp;
6033 res = task->tk_msg.rpc_resp;
6035 nfs41_setup_sequence(clp->cl_session, args, res, task);
6038 static const struct rpc_call_ops nfs41_sequence_ops = {
6039 .rpc_call_done = nfs41_sequence_call_done,
6040 .rpc_call_prepare = nfs41_sequence_prepare,
6041 .rpc_release = nfs41_sequence_release,
6044 static struct rpc_task *_nfs41_proc_sequence(struct nfs_client *clp,
6045 struct rpc_cred *cred,
6048 struct nfs4_sequence_data *calldata;
6049 struct rpc_message msg = {
6050 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SEQUENCE],
6053 struct rpc_task_setup task_setup_data = {
6054 .rpc_client = clp->cl_rpcclient,
6055 .rpc_message = &msg,
6056 .callback_ops = &nfs41_sequence_ops,
6057 .flags = RPC_TASK_ASYNC | RPC_TASK_TIMEOUT,
6060 if (!atomic_inc_not_zero(&clp->cl_count))
6061 return ERR_PTR(-EIO);
6062 calldata = kzalloc(sizeof(*calldata), GFP_NOFS);
6063 if (calldata == NULL) {
6064 nfs_put_client(clp);
6065 return ERR_PTR(-ENOMEM);
6067 nfs41_init_sequence(&calldata->args, &calldata->res, 0);
6069 nfs4_set_sequence_privileged(&calldata->args);
6070 msg.rpc_argp = &calldata->args;
6071 msg.rpc_resp = &calldata->res;
6072 calldata->clp = clp;
6073 task_setup_data.callback_data = calldata;
6075 return rpc_run_task(&task_setup_data);
6078 static int nfs41_proc_async_sequence(struct nfs_client *clp, struct rpc_cred *cred, unsigned renew_flags)
6080 struct rpc_task *task;
6083 if ((renew_flags & NFS4_RENEW_TIMEOUT) == 0)
6085 task = _nfs41_proc_sequence(clp, cred, false);
6087 ret = PTR_ERR(task);
6089 rpc_put_task_async(task);
6090 dprintk("<-- %s status=%d\n", __func__, ret);
6094 static int nfs4_proc_sequence(struct nfs_client *clp, struct rpc_cred *cred)
6096 struct rpc_task *task;
6099 task = _nfs41_proc_sequence(clp, cred, true);
6101 ret = PTR_ERR(task);
6104 ret = rpc_wait_for_completion_task(task);
6106 struct nfs4_sequence_res *res = task->tk_msg.rpc_resp;
6108 if (task->tk_status == 0)
6109 nfs41_handle_sequence_flag_errors(clp, res->sr_status_flags);
6110 ret = task->tk_status;
6114 dprintk("<-- %s status=%d\n", __func__, ret);
6118 struct nfs4_reclaim_complete_data {
6119 struct nfs_client *clp;
6120 struct nfs41_reclaim_complete_args arg;
6121 struct nfs41_reclaim_complete_res res;
6124 static void nfs4_reclaim_complete_prepare(struct rpc_task *task, void *data)
6126 struct nfs4_reclaim_complete_data *calldata = data;
6128 nfs41_setup_sequence(calldata->clp->cl_session,
6129 &calldata->arg.seq_args,
6130 &calldata->res.seq_res,
6134 static int nfs41_reclaim_complete_handle_errors(struct rpc_task *task, struct nfs_client *clp)
6136 switch(task->tk_status) {
6138 case -NFS4ERR_COMPLETE_ALREADY:
6139 case -NFS4ERR_WRONG_CRED: /* What to do here? */
6141 case -NFS4ERR_DELAY:
6142 rpc_delay(task, NFS4_POLL_RETRY_MAX);
6144 case -NFS4ERR_RETRY_UNCACHED_REP:
6147 nfs4_schedule_lease_recovery(clp);
6152 static void nfs4_reclaim_complete_done(struct rpc_task *task, void *data)
6154 struct nfs4_reclaim_complete_data *calldata = data;
6155 struct nfs_client *clp = calldata->clp;
6156 struct nfs4_sequence_res *res = &calldata->res.seq_res;
6158 dprintk("--> %s\n", __func__);
6159 if (!nfs41_sequence_done(task, res))
6162 if (nfs41_reclaim_complete_handle_errors(task, clp) == -EAGAIN) {
6163 rpc_restart_call_prepare(task);
6166 dprintk("<-- %s\n", __func__);
6169 static void nfs4_free_reclaim_complete_data(void *data)
6171 struct nfs4_reclaim_complete_data *calldata = data;
6176 static const struct rpc_call_ops nfs4_reclaim_complete_call_ops = {
6177 .rpc_call_prepare = nfs4_reclaim_complete_prepare,
6178 .rpc_call_done = nfs4_reclaim_complete_done,
6179 .rpc_release = nfs4_free_reclaim_complete_data,
6183 * Issue a global reclaim complete.
6185 static int nfs41_proc_reclaim_complete(struct nfs_client *clp,
6186 struct rpc_cred *cred)
6188 struct nfs4_reclaim_complete_data *calldata;
6189 struct rpc_task *task;
6190 struct rpc_message msg = {
6191 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RECLAIM_COMPLETE],
6194 struct rpc_task_setup task_setup_data = {
6195 .rpc_client = clp->cl_rpcclient,
6196 .rpc_message = &msg,
6197 .callback_ops = &nfs4_reclaim_complete_call_ops,
6198 .flags = RPC_TASK_ASYNC,
6200 int status = -ENOMEM;
6202 dprintk("--> %s\n", __func__);
6203 calldata = kzalloc(sizeof(*calldata), GFP_NOFS);
6204 if (calldata == NULL)
6206 calldata->clp = clp;
6207 calldata->arg.one_fs = 0;
6209 nfs41_init_sequence(&calldata->arg.seq_args, &calldata->res.seq_res, 0);
6210 nfs4_set_sequence_privileged(&calldata->arg.seq_args);
6211 msg.rpc_argp = &calldata->arg;
6212 msg.rpc_resp = &calldata->res;
6213 task_setup_data.callback_data = calldata;
6214 task = rpc_run_task(&task_setup_data);
6216 status = PTR_ERR(task);
6219 status = nfs4_wait_for_completion_rpc_task(task);
6221 status = task->tk_status;
6225 dprintk("<-- %s status=%d\n", __func__, status);
6230 nfs4_layoutget_prepare(struct rpc_task *task, void *calldata)
6232 struct nfs4_layoutget *lgp = calldata;
6233 struct nfs_server *server = NFS_SERVER(lgp->args.inode);
6234 struct nfs4_session *session = nfs4_get_session(server);
6236 dprintk("--> %s\n", __func__);
6237 /* Note the is a race here, where a CB_LAYOUTRECALL can come in
6238 * right now covering the LAYOUTGET we are about to send.
6239 * However, that is not so catastrophic, and there seems
6240 * to be no way to prevent it completely.
6242 if (nfs41_setup_sequence(session, &lgp->args.seq_args,
6243 &lgp->res.seq_res, task))
6245 if (pnfs_choose_layoutget_stateid(&lgp->args.stateid,
6246 NFS_I(lgp->args.inode)->layout,
6247 lgp->args.ctx->state)) {
6248 rpc_exit(task, NFS4_OK);
6252 static void nfs4_layoutget_done(struct rpc_task *task, void *calldata)
6254 struct nfs4_layoutget *lgp = calldata;
6255 struct inode *inode = lgp->args.inode;
6256 struct nfs_server *server = NFS_SERVER(inode);
6257 struct pnfs_layout_hdr *lo;
6258 struct nfs4_state *state = NULL;
6259 unsigned long timeo, giveup;
6261 dprintk("--> %s\n", __func__);
6263 if (!nfs41_sequence_done(task, &lgp->res.seq_res))
6266 switch (task->tk_status) {
6269 case -NFS4ERR_LAYOUTTRYLATER:
6270 case -NFS4ERR_RECALLCONFLICT:
6271 timeo = rpc_get_timeout(task->tk_client);
6272 giveup = lgp->args.timestamp + timeo;
6273 if (time_after(giveup, jiffies))
6274 task->tk_status = -NFS4ERR_DELAY;
6276 case -NFS4ERR_EXPIRED:
6277 case -NFS4ERR_BAD_STATEID:
6278 spin_lock(&inode->i_lock);
6279 lo = NFS_I(inode)->layout;
6280 if (!lo || list_empty(&lo->plh_segs)) {
6281 spin_unlock(&inode->i_lock);
6282 /* If the open stateid was bad, then recover it. */
6283 state = lgp->args.ctx->state;
6287 pnfs_mark_matching_lsegs_invalid(lo, &head, NULL);
6288 spin_unlock(&inode->i_lock);
6289 /* Mark the bad layout state as invalid, then
6290 * retry using the open stateid. */
6291 pnfs_free_lseg_list(&head);
6294 if (nfs4_async_handle_error(task, server, state) == -EAGAIN)
6295 rpc_restart_call_prepare(task);
6297 dprintk("<-- %s\n", __func__);
6300 static size_t max_response_pages(struct nfs_server *server)
6302 u32 max_resp_sz = server->nfs_client->cl_session->fc_attrs.max_resp_sz;
6303 return nfs_page_array_len(0, max_resp_sz);
6306 static void nfs4_free_pages(struct page **pages, size_t size)
6313 for (i = 0; i < size; i++) {
6316 __free_page(pages[i]);
6321 static struct page **nfs4_alloc_pages(size_t size, gfp_t gfp_flags)
6323 struct page **pages;
6326 pages = kcalloc(size, sizeof(struct page *), gfp_flags);
6328 dprintk("%s: can't alloc array of %zu pages\n", __func__, size);
6332 for (i = 0; i < size; i++) {
6333 pages[i] = alloc_page(gfp_flags);
6335 dprintk("%s: failed to allocate page\n", __func__);
6336 nfs4_free_pages(pages, size);
6344 static void nfs4_layoutget_release(void *calldata)
6346 struct nfs4_layoutget *lgp = calldata;
6347 struct inode *inode = lgp->args.inode;
6348 struct nfs_server *server = NFS_SERVER(inode);
6349 size_t max_pages = max_response_pages(server);
6351 dprintk("--> %s\n", __func__);
6352 nfs4_free_pages(lgp->args.layout.pages, max_pages);
6353 pnfs_put_layout_hdr(NFS_I(inode)->layout);
6354 put_nfs_open_context(lgp->args.ctx);
6356 dprintk("<-- %s\n", __func__);
6359 static const struct rpc_call_ops nfs4_layoutget_call_ops = {
6360 .rpc_call_prepare = nfs4_layoutget_prepare,
6361 .rpc_call_done = nfs4_layoutget_done,
6362 .rpc_release = nfs4_layoutget_release,
6365 struct pnfs_layout_segment *
6366 nfs4_proc_layoutget(struct nfs4_layoutget *lgp, gfp_t gfp_flags)
6368 struct inode *inode = lgp->args.inode;
6369 struct nfs_server *server = NFS_SERVER(inode);
6370 size_t max_pages = max_response_pages(server);
6371 struct rpc_task *task;
6372 struct rpc_message msg = {
6373 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTGET],
6374 .rpc_argp = &lgp->args,
6375 .rpc_resp = &lgp->res,
6376 .rpc_cred = lgp->cred,
6378 struct rpc_task_setup task_setup_data = {
6379 .rpc_client = server->client,
6380 .rpc_message = &msg,
6381 .callback_ops = &nfs4_layoutget_call_ops,
6382 .callback_data = lgp,
6383 .flags = RPC_TASK_ASYNC,
6385 struct pnfs_layout_segment *lseg = NULL;
6388 dprintk("--> %s\n", __func__);
6390 lgp->args.layout.pages = nfs4_alloc_pages(max_pages, gfp_flags);
6391 if (!lgp->args.layout.pages) {
6392 nfs4_layoutget_release(lgp);
6393 return ERR_PTR(-ENOMEM);
6395 lgp->args.layout.pglen = max_pages * PAGE_SIZE;
6396 lgp->args.timestamp = jiffies;
6398 lgp->res.layoutp = &lgp->args.layout;
6399 lgp->res.seq_res.sr_slot = NULL;
6400 nfs41_init_sequence(&lgp->args.seq_args, &lgp->res.seq_res, 0);
6402 /* nfs4_layoutget_release calls pnfs_put_layout_hdr */
6403 pnfs_get_layout_hdr(NFS_I(inode)->layout);
6405 task = rpc_run_task(&task_setup_data);
6407 return ERR_CAST(task);
6408 status = nfs4_wait_for_completion_rpc_task(task);
6410 status = task->tk_status;
6411 /* if layoutp->len is 0, nfs4_layoutget_prepare called rpc_exit */
6412 if (status == 0 && lgp->res.layoutp->len)
6413 lseg = pnfs_layout_process(lgp);
6415 dprintk("<-- %s status=%d\n", __func__, status);
6417 return ERR_PTR(status);
6422 nfs4_layoutreturn_prepare(struct rpc_task *task, void *calldata)
6424 struct nfs4_layoutreturn *lrp = calldata;
6426 dprintk("--> %s\n", __func__);
6427 nfs41_setup_sequence(lrp->clp->cl_session,
6428 &lrp->args.seq_args,
6433 static void nfs4_layoutreturn_done(struct rpc_task *task, void *calldata)
6435 struct nfs4_layoutreturn *lrp = calldata;
6436 struct nfs_server *server;
6438 dprintk("--> %s\n", __func__);
6440 if (!nfs41_sequence_done(task, &lrp->res.seq_res))
6443 server = NFS_SERVER(lrp->args.inode);
6444 if (nfs4_async_handle_error(task, server, NULL) == -EAGAIN) {
6445 rpc_restart_call_prepare(task);
6448 dprintk("<-- %s\n", __func__);
6451 static void nfs4_layoutreturn_release(void *calldata)
6453 struct nfs4_layoutreturn *lrp = calldata;
6454 struct pnfs_layout_hdr *lo = lrp->args.layout;
6456 dprintk("--> %s\n", __func__);
6457 spin_lock(&lo->plh_inode->i_lock);
6458 if (lrp->res.lrs_present)
6459 pnfs_set_layout_stateid(lo, &lrp->res.stateid, true);
6460 lo->plh_block_lgets--;
6461 spin_unlock(&lo->plh_inode->i_lock);
6462 pnfs_put_layout_hdr(lrp->args.layout);
6464 dprintk("<-- %s\n", __func__);
6467 static const struct rpc_call_ops nfs4_layoutreturn_call_ops = {
6468 .rpc_call_prepare = nfs4_layoutreturn_prepare,
6469 .rpc_call_done = nfs4_layoutreturn_done,
6470 .rpc_release = nfs4_layoutreturn_release,
6473 int nfs4_proc_layoutreturn(struct nfs4_layoutreturn *lrp)
6475 struct rpc_task *task;
6476 struct rpc_message msg = {
6477 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTRETURN],
6478 .rpc_argp = &lrp->args,
6479 .rpc_resp = &lrp->res,
6480 .rpc_cred = lrp->cred,
6482 struct rpc_task_setup task_setup_data = {
6483 .rpc_client = lrp->clp->cl_rpcclient,
6484 .rpc_message = &msg,
6485 .callback_ops = &nfs4_layoutreturn_call_ops,
6486 .callback_data = lrp,
6490 dprintk("--> %s\n", __func__);
6491 nfs41_init_sequence(&lrp->args.seq_args, &lrp->res.seq_res, 1);
6492 task = rpc_run_task(&task_setup_data);
6494 return PTR_ERR(task);
6495 status = task->tk_status;
6496 dprintk("<-- %s status=%d\n", __func__, status);
6502 * Retrieve the list of Data Server devices from the MDS.
6504 static int _nfs4_getdevicelist(struct nfs_server *server,
6505 const struct nfs_fh *fh,
6506 struct pnfs_devicelist *devlist)
6508 struct nfs4_getdevicelist_args args = {
6510 .layoutclass = server->pnfs_curr_ld->id,
6512 struct nfs4_getdevicelist_res res = {
6515 struct rpc_message msg = {
6516 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETDEVICELIST],
6522 dprintk("--> %s\n", __func__);
6523 status = nfs4_call_sync(server->client, server, &msg, &args.seq_args,
6525 dprintk("<-- %s status=%d\n", __func__, status);
6529 int nfs4_proc_getdevicelist(struct nfs_server *server,
6530 const struct nfs_fh *fh,
6531 struct pnfs_devicelist *devlist)
6533 struct nfs4_exception exception = { };
6537 err = nfs4_handle_exception(server,
6538 _nfs4_getdevicelist(server, fh, devlist),
6540 } while (exception.retry);
6542 dprintk("%s: err=%d, num_devs=%u\n", __func__,
6543 err, devlist->num_devs);
6547 EXPORT_SYMBOL_GPL(nfs4_proc_getdevicelist);
6550 _nfs4_proc_getdeviceinfo(struct nfs_server *server, struct pnfs_device *pdev)
6552 struct nfs4_getdeviceinfo_args args = {
6555 struct nfs4_getdeviceinfo_res res = {
6558 struct rpc_message msg = {
6559 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETDEVICEINFO],
6565 dprintk("--> %s\n", __func__);
6566 status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0);
6567 dprintk("<-- %s status=%d\n", __func__, status);
6572 int nfs4_proc_getdeviceinfo(struct nfs_server *server, struct pnfs_device *pdev)
6574 struct nfs4_exception exception = { };
6578 err = nfs4_handle_exception(server,
6579 _nfs4_proc_getdeviceinfo(server, pdev),
6581 } while (exception.retry);
6584 EXPORT_SYMBOL_GPL(nfs4_proc_getdeviceinfo);
6586 static void nfs4_layoutcommit_prepare(struct rpc_task *task, void *calldata)
6588 struct nfs4_layoutcommit_data *data = calldata;
6589 struct nfs_server *server = NFS_SERVER(data->args.inode);
6590 struct nfs4_session *session = nfs4_get_session(server);
6592 nfs41_setup_sequence(session,
6593 &data->args.seq_args,
6599 nfs4_layoutcommit_done(struct rpc_task *task, void *calldata)
6601 struct nfs4_layoutcommit_data *data = calldata;
6602 struct nfs_server *server = NFS_SERVER(data->args.inode);
6604 if (!nfs41_sequence_done(task, &data->res.seq_res))
6607 switch (task->tk_status) { /* Just ignore these failures */
6608 case -NFS4ERR_DELEG_REVOKED: /* layout was recalled */
6609 case -NFS4ERR_BADIOMODE: /* no IOMODE_RW layout for range */
6610 case -NFS4ERR_BADLAYOUT: /* no layout */
6611 case -NFS4ERR_GRACE: /* loca_recalim always false */
6612 task->tk_status = 0;
6615 nfs_post_op_update_inode_force_wcc(data->args.inode,
6619 if (nfs4_async_handle_error(task, server, NULL) == -EAGAIN) {
6620 rpc_restart_call_prepare(task);
6626 static void nfs4_layoutcommit_release(void *calldata)
6628 struct nfs4_layoutcommit_data *data = calldata;
6630 pnfs_cleanup_layoutcommit(data);
6631 put_rpccred(data->cred);
6635 static const struct rpc_call_ops nfs4_layoutcommit_ops = {
6636 .rpc_call_prepare = nfs4_layoutcommit_prepare,
6637 .rpc_call_done = nfs4_layoutcommit_done,
6638 .rpc_release = nfs4_layoutcommit_release,
6642 nfs4_proc_layoutcommit(struct nfs4_layoutcommit_data *data, bool sync)
6644 struct rpc_message msg = {
6645 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTCOMMIT],
6646 .rpc_argp = &data->args,
6647 .rpc_resp = &data->res,
6648 .rpc_cred = data->cred,
6650 struct rpc_task_setup task_setup_data = {
6651 .task = &data->task,
6652 .rpc_client = NFS_CLIENT(data->args.inode),
6653 .rpc_message = &msg,
6654 .callback_ops = &nfs4_layoutcommit_ops,
6655 .callback_data = data,
6656 .flags = RPC_TASK_ASYNC,
6658 struct rpc_task *task;
6661 dprintk("NFS: %4d initiating layoutcommit call. sync %d "
6662 "lbw: %llu inode %lu\n",
6663 data->task.tk_pid, sync,
6664 data->args.lastbytewritten,
6665 data->args.inode->i_ino);
6667 nfs41_init_sequence(&data->args.seq_args, &data->res.seq_res, 1);
6668 task = rpc_run_task(&task_setup_data);
6670 return PTR_ERR(task);
6673 status = nfs4_wait_for_completion_rpc_task(task);
6676 status = task->tk_status;
6678 dprintk("%s: status %d\n", __func__, status);
6684 _nfs41_proc_secinfo_no_name(struct nfs_server *server, struct nfs_fh *fhandle,
6685 struct nfs_fsinfo *info, struct nfs4_secinfo_flavors *flavors)
6687 struct nfs41_secinfo_no_name_args args = {
6688 .style = SECINFO_STYLE_CURRENT_FH,
6690 struct nfs4_secinfo_res res = {
6693 struct rpc_message msg = {
6694 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SECINFO_NO_NAME],
6698 return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0);
6702 nfs41_proc_secinfo_no_name(struct nfs_server *server, struct nfs_fh *fhandle,
6703 struct nfs_fsinfo *info, struct nfs4_secinfo_flavors *flavors)
6705 struct nfs4_exception exception = { };
6708 err = _nfs41_proc_secinfo_no_name(server, fhandle, info, flavors);
6711 case -NFS4ERR_WRONGSEC:
6712 case -NFS4ERR_NOTSUPP:
6715 err = nfs4_handle_exception(server, err, &exception);
6717 } while (exception.retry);
6723 nfs41_find_root_sec(struct nfs_server *server, struct nfs_fh *fhandle,
6724 struct nfs_fsinfo *info)
6728 rpc_authflavor_t flavor;
6729 struct nfs4_secinfo_flavors *flavors;
6731 page = alloc_page(GFP_KERNEL);
6737 flavors = page_address(page);
6738 err = nfs41_proc_secinfo_no_name(server, fhandle, info, flavors);
6741 * Fall back on "guess and check" method if
6742 * the server doesn't support SECINFO_NO_NAME
6744 if (err == -NFS4ERR_WRONGSEC || err == -NFS4ERR_NOTSUPP) {
6745 err = nfs4_find_root_sec(server, fhandle, info);
6751 flavor = nfs_find_best_sec(flavors);
6753 err = nfs4_lookup_root_sec(server, fhandle, info, flavor);
6763 static int _nfs41_test_stateid(struct nfs_server *server,
6764 nfs4_stateid *stateid,
6765 struct rpc_cred *cred)
6768 struct nfs41_test_stateid_args args = {
6771 struct nfs41_test_stateid_res res;
6772 struct rpc_message msg = {
6773 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_TEST_STATEID],
6779 dprintk("NFS call test_stateid %p\n", stateid);
6780 nfs41_init_sequence(&args.seq_args, &res.seq_res, 0);
6781 nfs4_set_sequence_privileged(&args.seq_args);
6782 status = nfs4_call_sync_sequence(server->client, server, &msg,
6783 &args.seq_args, &res.seq_res);
6784 if (status != NFS_OK) {
6785 dprintk("NFS reply test_stateid: failed, %d\n", status);
6788 dprintk("NFS reply test_stateid: succeeded, %d\n", -res.status);
6793 * nfs41_test_stateid - perform a TEST_STATEID operation
6795 * @server: server / transport on which to perform the operation
6796 * @stateid: state ID to test
6799 * Returns NFS_OK if the server recognizes that "stateid" is valid.
6800 * Otherwise a negative NFS4ERR value is returned if the operation
6801 * failed or the state ID is not currently valid.
6803 static int nfs41_test_stateid(struct nfs_server *server,
6804 nfs4_stateid *stateid,
6805 struct rpc_cred *cred)
6807 struct nfs4_exception exception = { };
6810 err = _nfs41_test_stateid(server, stateid, cred);
6811 if (err != -NFS4ERR_DELAY)
6813 nfs4_handle_exception(server, err, &exception);
6814 } while (exception.retry);
6818 struct nfs_free_stateid_data {
6819 struct nfs_server *server;
6820 struct nfs41_free_stateid_args args;
6821 struct nfs41_free_stateid_res res;
6824 static void nfs41_free_stateid_prepare(struct rpc_task *task, void *calldata)
6826 struct nfs_free_stateid_data *data = calldata;
6827 nfs41_setup_sequence(nfs4_get_session(data->server),
6828 &data->args.seq_args,
6833 static void nfs41_free_stateid_done(struct rpc_task *task, void *calldata)
6835 struct nfs_free_stateid_data *data = calldata;
6837 nfs41_sequence_done(task, &data->res.seq_res);
6839 switch (task->tk_status) {
6840 case -NFS4ERR_DELAY:
6841 if (nfs4_async_handle_error(task, data->server, NULL) == -EAGAIN)
6842 rpc_restart_call_prepare(task);
6846 static void nfs41_free_stateid_release(void *calldata)
6851 const struct rpc_call_ops nfs41_free_stateid_ops = {
6852 .rpc_call_prepare = nfs41_free_stateid_prepare,
6853 .rpc_call_done = nfs41_free_stateid_done,
6854 .rpc_release = nfs41_free_stateid_release,
6857 static struct rpc_task *_nfs41_free_stateid(struct nfs_server *server,
6858 nfs4_stateid *stateid,
6859 struct rpc_cred *cred,
6862 struct rpc_message msg = {
6863 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FREE_STATEID],
6866 struct rpc_task_setup task_setup = {
6867 .rpc_client = server->client,
6868 .rpc_message = &msg,
6869 .callback_ops = &nfs41_free_stateid_ops,
6870 .flags = RPC_TASK_ASYNC,
6872 struct nfs_free_stateid_data *data;
6874 dprintk("NFS call free_stateid %p\n", stateid);
6875 data = kmalloc(sizeof(*data), GFP_NOFS);
6877 return ERR_PTR(-ENOMEM);
6878 data->server = server;
6879 nfs4_stateid_copy(&data->args.stateid, stateid);
6881 task_setup.callback_data = data;
6883 msg.rpc_argp = &data->args;
6884 msg.rpc_resp = &data->res;
6885 nfs41_init_sequence(&data->args.seq_args, &data->res.seq_res, 0);
6887 nfs4_set_sequence_privileged(&data->args.seq_args);
6889 return rpc_run_task(&task_setup);
6893 * nfs41_free_stateid - perform a FREE_STATEID operation
6895 * @server: server / transport on which to perform the operation
6896 * @stateid: state ID to release
6899 * Returns NFS_OK if the server freed "stateid". Otherwise a
6900 * negative NFS4ERR value is returned.
6902 static int nfs41_free_stateid(struct nfs_server *server,
6903 nfs4_stateid *stateid,
6904 struct rpc_cred *cred)
6906 struct rpc_task *task;
6909 task = _nfs41_free_stateid(server, stateid, cred, true);
6911 return PTR_ERR(task);
6912 ret = rpc_wait_for_completion_task(task);
6914 ret = task->tk_status;
6919 static int nfs41_free_lock_state(struct nfs_server *server, struct nfs4_lock_state *lsp)
6921 struct rpc_task *task;
6922 struct rpc_cred *cred = lsp->ls_state->owner->so_cred;
6924 task = _nfs41_free_stateid(server, &lsp->ls_stateid, cred, false);
6925 nfs4_free_lock_state(server, lsp);
6927 return PTR_ERR(task);
6932 static bool nfs41_match_stateid(const nfs4_stateid *s1,
6933 const nfs4_stateid *s2)
6935 if (memcmp(s1->other, s2->other, sizeof(s1->other)) != 0)
6938 if (s1->seqid == s2->seqid)
6940 if (s1->seqid == 0 || s2->seqid == 0)
6946 #endif /* CONFIG_NFS_V4_1 */
6948 static bool nfs4_match_stateid(const nfs4_stateid *s1,
6949 const nfs4_stateid *s2)
6951 return nfs4_stateid_match(s1, s2);
6955 static const struct nfs4_state_recovery_ops nfs40_reboot_recovery_ops = {
6956 .owner_flag_bit = NFS_OWNER_RECLAIM_REBOOT,
6957 .state_flag_bit = NFS_STATE_RECLAIM_REBOOT,
6958 .recover_open = nfs4_open_reclaim,
6959 .recover_lock = nfs4_lock_reclaim,
6960 .establish_clid = nfs4_init_clientid,
6961 .get_clid_cred = nfs4_get_setclientid_cred,
6962 .detect_trunking = nfs40_discover_server_trunking,
6965 #if defined(CONFIG_NFS_V4_1)
6966 static const struct nfs4_state_recovery_ops nfs41_reboot_recovery_ops = {
6967 .owner_flag_bit = NFS_OWNER_RECLAIM_REBOOT,
6968 .state_flag_bit = NFS_STATE_RECLAIM_REBOOT,
6969 .recover_open = nfs4_open_reclaim,
6970 .recover_lock = nfs4_lock_reclaim,
6971 .establish_clid = nfs41_init_clientid,
6972 .get_clid_cred = nfs4_get_exchange_id_cred,
6973 .reclaim_complete = nfs41_proc_reclaim_complete,
6974 .detect_trunking = nfs41_discover_server_trunking,
6976 #endif /* CONFIG_NFS_V4_1 */
6978 static const struct nfs4_state_recovery_ops nfs40_nograce_recovery_ops = {
6979 .owner_flag_bit = NFS_OWNER_RECLAIM_NOGRACE,
6980 .state_flag_bit = NFS_STATE_RECLAIM_NOGRACE,
6981 .recover_open = nfs4_open_expired,
6982 .recover_lock = nfs4_lock_expired,
6983 .establish_clid = nfs4_init_clientid,
6984 .get_clid_cred = nfs4_get_setclientid_cred,
6987 #if defined(CONFIG_NFS_V4_1)
6988 static const struct nfs4_state_recovery_ops nfs41_nograce_recovery_ops = {
6989 .owner_flag_bit = NFS_OWNER_RECLAIM_NOGRACE,
6990 .state_flag_bit = NFS_STATE_RECLAIM_NOGRACE,
6991 .recover_open = nfs41_open_expired,
6992 .recover_lock = nfs41_lock_expired,
6993 .establish_clid = nfs41_init_clientid,
6994 .get_clid_cred = nfs4_get_exchange_id_cred,
6996 #endif /* CONFIG_NFS_V4_1 */
6998 static const struct nfs4_state_maintenance_ops nfs40_state_renewal_ops = {
6999 .sched_state_renewal = nfs4_proc_async_renew,
7000 .get_state_renewal_cred_locked = nfs4_get_renew_cred_locked,
7001 .renew_lease = nfs4_proc_renew,
7004 #if defined(CONFIG_NFS_V4_1)
7005 static const struct nfs4_state_maintenance_ops nfs41_state_renewal_ops = {
7006 .sched_state_renewal = nfs41_proc_async_sequence,
7007 .get_state_renewal_cred_locked = nfs4_get_machine_cred_locked,
7008 .renew_lease = nfs4_proc_sequence,
7012 static const struct nfs4_minor_version_ops nfs_v4_0_minor_ops = {
7014 .init_caps = NFS_CAP_READDIRPLUS
7015 | NFS_CAP_ATOMIC_OPEN
7016 | NFS_CAP_CHANGE_ATTR
7017 | NFS_CAP_POSIX_LOCK,
7018 .call_sync = _nfs4_call_sync,
7019 .match_stateid = nfs4_match_stateid,
7020 .find_root_sec = nfs4_find_root_sec,
7021 .free_lock_state = nfs4_release_lockowner,
7022 .reboot_recovery_ops = &nfs40_reboot_recovery_ops,
7023 .nograce_recovery_ops = &nfs40_nograce_recovery_ops,
7024 .state_renewal_ops = &nfs40_state_renewal_ops,
7027 #if defined(CONFIG_NFS_V4_1)
7028 static const struct nfs4_minor_version_ops nfs_v4_1_minor_ops = {
7030 .init_caps = NFS_CAP_READDIRPLUS
7031 | NFS_CAP_ATOMIC_OPEN
7032 | NFS_CAP_CHANGE_ATTR
7033 | NFS_CAP_POSIX_LOCK
7034 | NFS_CAP_STATEID_NFSV41
7035 | NFS_CAP_ATOMIC_OPEN_V1,
7036 .call_sync = nfs4_call_sync_sequence,
7037 .match_stateid = nfs41_match_stateid,
7038 .find_root_sec = nfs41_find_root_sec,
7039 .free_lock_state = nfs41_free_lock_state,
7040 .reboot_recovery_ops = &nfs41_reboot_recovery_ops,
7041 .nograce_recovery_ops = &nfs41_nograce_recovery_ops,
7042 .state_renewal_ops = &nfs41_state_renewal_ops,
7046 const struct nfs4_minor_version_ops *nfs_v4_minor_ops[] = {
7047 [0] = &nfs_v4_0_minor_ops,
7048 #if defined(CONFIG_NFS_V4_1)
7049 [1] = &nfs_v4_1_minor_ops,
7053 const struct inode_operations nfs4_dir_inode_operations = {
7054 .create = nfs_create,
7055 .lookup = nfs_lookup,
7056 .atomic_open = nfs_atomic_open,
7058 .unlink = nfs_unlink,
7059 .symlink = nfs_symlink,
7063 .rename = nfs_rename,
7064 .permission = nfs_permission,
7065 .getattr = nfs_getattr,
7066 .setattr = nfs_setattr,
7067 .getxattr = generic_getxattr,
7068 .setxattr = generic_setxattr,
7069 .listxattr = generic_listxattr,
7070 .removexattr = generic_removexattr,
7073 static const struct inode_operations nfs4_file_inode_operations = {
7074 .permission = nfs_permission,
7075 .getattr = nfs_getattr,
7076 .setattr = nfs_setattr,
7077 .getxattr = generic_getxattr,
7078 .setxattr = generic_setxattr,
7079 .listxattr = generic_listxattr,
7080 .removexattr = generic_removexattr,
7083 const struct nfs_rpc_ops nfs_v4_clientops = {
7084 .version = 4, /* protocol version */
7085 .dentry_ops = &nfs4_dentry_operations,
7086 .dir_inode_ops = &nfs4_dir_inode_operations,
7087 .file_inode_ops = &nfs4_file_inode_operations,
7088 .file_ops = &nfs4_file_operations,
7089 .getroot = nfs4_proc_get_root,
7090 .submount = nfs4_submount,
7091 .try_mount = nfs4_try_mount,
7092 .getattr = nfs4_proc_getattr,
7093 .setattr = nfs4_proc_setattr,
7094 .lookup = nfs4_proc_lookup,
7095 .access = nfs4_proc_access,
7096 .readlink = nfs4_proc_readlink,
7097 .create = nfs4_proc_create,
7098 .remove = nfs4_proc_remove,
7099 .unlink_setup = nfs4_proc_unlink_setup,
7100 .unlink_rpc_prepare = nfs4_proc_unlink_rpc_prepare,
7101 .unlink_done = nfs4_proc_unlink_done,
7102 .rename = nfs4_proc_rename,
7103 .rename_setup = nfs4_proc_rename_setup,
7104 .rename_rpc_prepare = nfs4_proc_rename_rpc_prepare,
7105 .rename_done = nfs4_proc_rename_done,
7106 .link = nfs4_proc_link,
7107 .symlink = nfs4_proc_symlink,
7108 .mkdir = nfs4_proc_mkdir,
7109 .rmdir = nfs4_proc_remove,
7110 .readdir = nfs4_proc_readdir,
7111 .mknod = nfs4_proc_mknod,
7112 .statfs = nfs4_proc_statfs,
7113 .fsinfo = nfs4_proc_fsinfo,
7114 .pathconf = nfs4_proc_pathconf,
7115 .set_capabilities = nfs4_server_capabilities,
7116 .decode_dirent = nfs4_decode_dirent,
7117 .read_setup = nfs4_proc_read_setup,
7118 .read_pageio_init = pnfs_pageio_init_read,
7119 .read_rpc_prepare = nfs4_proc_read_rpc_prepare,
7120 .read_done = nfs4_read_done,
7121 .write_setup = nfs4_proc_write_setup,
7122 .write_pageio_init = pnfs_pageio_init_write,
7123 .write_rpc_prepare = nfs4_proc_write_rpc_prepare,
7124 .write_done = nfs4_write_done,
7125 .commit_setup = nfs4_proc_commit_setup,
7126 .commit_rpc_prepare = nfs4_proc_commit_rpc_prepare,
7127 .commit_done = nfs4_commit_done,
7128 .lock = nfs4_proc_lock,
7129 .clear_acl_cache = nfs4_zap_acl_attr,
7130 .close_context = nfs4_close_context,
7131 .open_context = nfs4_atomic_open,
7132 .have_delegation = nfs4_have_delegation,
7133 .return_delegation = nfs4_inode_return_delegation,
7134 .alloc_client = nfs4_alloc_client,
7135 .init_client = nfs4_init_client,
7136 .free_client = nfs4_free_client,
7137 .create_server = nfs4_create_server,
7138 .clone_server = nfs_clone_server,
7141 static const struct xattr_handler nfs4_xattr_nfs4_acl_handler = {
7142 .prefix = XATTR_NAME_NFSV4_ACL,
7143 .list = nfs4_xattr_list_nfs4_acl,
7144 .get = nfs4_xattr_get_nfs4_acl,
7145 .set = nfs4_xattr_set_nfs4_acl,
7148 const struct xattr_handler *nfs4_xattr_handlers[] = {
7149 &nfs4_xattr_nfs4_acl_handler,