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/sunrpc/gss_api.h>
47 #include <linux/nfs.h>
48 #include <linux/nfs4.h>
49 #include <linux/nfs_fs.h>
50 #include <linux/nfs_page.h>
51 #include <linux/nfs_mount.h>
52 #include <linux/namei.h>
53 #include <linux/mount.h>
54 #include <linux/module.h>
55 #include <linux/sunrpc/bc_xprt.h>
56 #include <linux/xattr.h>
57 #include <linux/utsname.h>
60 #include "delegation.h"
66 #define NFSDBG_FACILITY NFSDBG_PROC
68 #define NFS4_POLL_RETRY_MIN (HZ/10)
69 #define NFS4_POLL_RETRY_MAX (15*HZ)
71 #define NFS4_MAX_LOOP_ON_RECOVER (10)
74 static int _nfs4_proc_open(struct nfs4_opendata *data);
75 static int _nfs4_recover_proc_open(struct nfs4_opendata *data);
76 static int nfs4_do_fsinfo(struct nfs_server *, struct nfs_fh *, struct nfs_fsinfo *);
77 static int nfs4_async_handle_error(struct rpc_task *, const struct nfs_server *, struct nfs4_state *);
78 static int _nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fattr *fattr);
79 static int nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred,
80 struct nfs_fattr *fattr, struct iattr *sattr,
81 struct nfs4_state *state);
82 #ifdef CONFIG_NFS_V4_1
83 static int nfs41_test_stateid(struct nfs_server *, struct nfs4_state *);
84 static int nfs41_free_stateid(struct nfs_server *, struct nfs4_state *);
86 /* Prevent leaks of NFSv4 errors into userland */
87 static int nfs4_map_errors(int err)
92 case -NFS4ERR_RESOURCE:
94 case -NFS4ERR_WRONGSEC:
96 case -NFS4ERR_BADOWNER:
97 case -NFS4ERR_BADNAME:
100 dprintk("%s could not handle NFSv4 error %d\n",
108 * This is our standard bitmap for GETATTR requests.
110 const u32 nfs4_fattr_bitmap[2] = {
112 | FATTR4_WORD0_CHANGE
115 | FATTR4_WORD0_FILEID,
117 | FATTR4_WORD1_NUMLINKS
119 | FATTR4_WORD1_OWNER_GROUP
120 | FATTR4_WORD1_RAWDEV
121 | FATTR4_WORD1_SPACE_USED
122 | FATTR4_WORD1_TIME_ACCESS
123 | FATTR4_WORD1_TIME_METADATA
124 | FATTR4_WORD1_TIME_MODIFY
127 const u32 nfs4_statfs_bitmap[2] = {
128 FATTR4_WORD0_FILES_AVAIL
129 | FATTR4_WORD0_FILES_FREE
130 | FATTR4_WORD0_FILES_TOTAL,
131 FATTR4_WORD1_SPACE_AVAIL
132 | FATTR4_WORD1_SPACE_FREE
133 | FATTR4_WORD1_SPACE_TOTAL
136 const u32 nfs4_pathconf_bitmap[2] = {
138 | FATTR4_WORD0_MAXNAME,
142 const u32 nfs4_fsinfo_bitmap[3] = { FATTR4_WORD0_MAXFILESIZE
143 | FATTR4_WORD0_MAXREAD
144 | FATTR4_WORD0_MAXWRITE
145 | FATTR4_WORD0_LEASE_TIME,
146 FATTR4_WORD1_TIME_DELTA
147 | FATTR4_WORD1_FS_LAYOUT_TYPES,
148 FATTR4_WORD2_LAYOUT_BLKSIZE
151 const u32 nfs4_fs_locations_bitmap[2] = {
153 | FATTR4_WORD0_CHANGE
156 | FATTR4_WORD0_FILEID
157 | FATTR4_WORD0_FS_LOCATIONS,
159 | FATTR4_WORD1_NUMLINKS
161 | FATTR4_WORD1_OWNER_GROUP
162 | FATTR4_WORD1_RAWDEV
163 | FATTR4_WORD1_SPACE_USED
164 | FATTR4_WORD1_TIME_ACCESS
165 | FATTR4_WORD1_TIME_METADATA
166 | FATTR4_WORD1_TIME_MODIFY
167 | FATTR4_WORD1_MOUNTED_ON_FILEID
170 static void nfs4_setup_readdir(u64 cookie, __be32 *verifier, struct dentry *dentry,
171 struct nfs4_readdir_arg *readdir)
175 BUG_ON(readdir->count < 80);
177 readdir->cookie = cookie;
178 memcpy(&readdir->verifier, verifier, sizeof(readdir->verifier));
183 memset(&readdir->verifier, 0, sizeof(readdir->verifier));
188 * NFSv4 servers do not return entries for '.' and '..'
189 * Therefore, we fake these entries here. We let '.'
190 * have cookie 0 and '..' have cookie 1. Note that
191 * when talking to the server, we always send cookie 0
194 start = p = kmap_atomic(*readdir->pages, KM_USER0);
197 *p++ = xdr_one; /* next */
198 *p++ = xdr_zero; /* cookie, first word */
199 *p++ = xdr_one; /* cookie, second word */
200 *p++ = xdr_one; /* entry len */
201 memcpy(p, ".\0\0\0", 4); /* entry */
203 *p++ = xdr_one; /* bitmap length */
204 *p++ = htonl(FATTR4_WORD0_FILEID); /* bitmap */
205 *p++ = htonl(8); /* attribute buffer length */
206 p = xdr_encode_hyper(p, NFS_FILEID(dentry->d_inode));
209 *p++ = xdr_one; /* next */
210 *p++ = xdr_zero; /* cookie, first word */
211 *p++ = xdr_two; /* cookie, second word */
212 *p++ = xdr_two; /* entry len */
213 memcpy(p, "..\0\0", 4); /* entry */
215 *p++ = xdr_one; /* bitmap length */
216 *p++ = htonl(FATTR4_WORD0_FILEID); /* bitmap */
217 *p++ = htonl(8); /* attribute buffer length */
218 p = xdr_encode_hyper(p, NFS_FILEID(dentry->d_parent->d_inode));
220 readdir->pgbase = (char *)p - (char *)start;
221 readdir->count -= readdir->pgbase;
222 kunmap_atomic(start, KM_USER0);
225 static int nfs4_wait_clnt_recover(struct nfs_client *clp)
231 res = wait_on_bit(&clp->cl_state, NFS4CLNT_MANAGER_RUNNING,
232 nfs_wait_bit_killable, TASK_KILLABLE);
236 static int nfs4_delay(struct rpc_clnt *clnt, long *timeout)
243 *timeout = NFS4_POLL_RETRY_MIN;
244 if (*timeout > NFS4_POLL_RETRY_MAX)
245 *timeout = NFS4_POLL_RETRY_MAX;
246 schedule_timeout_killable(*timeout);
247 if (fatal_signal_pending(current))
253 /* This is the error handling routine for processes that are allowed
256 static int nfs4_handle_exception(struct nfs_server *server, int errorcode, struct nfs4_exception *exception)
258 struct nfs_client *clp = server->nfs_client;
259 struct nfs4_state *state = exception->state;
262 exception->retry = 0;
266 case -NFS4ERR_ADMIN_REVOKED:
267 case -NFS4ERR_BAD_STATEID:
268 case -NFS4ERR_OPENMODE:
271 nfs4_schedule_stateid_recovery(server, state);
272 goto wait_on_recovery;
273 case -NFS4ERR_EXPIRED:
275 nfs4_schedule_stateid_recovery(server, state);
276 case -NFS4ERR_STALE_STATEID:
277 case -NFS4ERR_STALE_CLIENTID:
278 nfs4_schedule_lease_recovery(clp);
279 goto wait_on_recovery;
280 #if defined(CONFIG_NFS_V4_1)
281 case -NFS4ERR_BADSESSION:
282 case -NFS4ERR_BADSLOT:
283 case -NFS4ERR_BAD_HIGH_SLOT:
284 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION:
285 case -NFS4ERR_DEADSESSION:
286 case -NFS4ERR_SEQ_FALSE_RETRY:
287 case -NFS4ERR_SEQ_MISORDERED:
288 dprintk("%s ERROR: %d Reset session\n", __func__,
290 nfs4_schedule_session_recovery(clp->cl_session);
291 exception->retry = 1;
293 #endif /* defined(CONFIG_NFS_V4_1) */
294 case -NFS4ERR_FILE_OPEN:
295 if (exception->timeout > HZ) {
296 /* We have retried a decent amount, time to
305 ret = nfs4_delay(server->client, &exception->timeout);
308 case -NFS4ERR_RETRY_UNCACHED_REP:
309 case -NFS4ERR_OLD_STATEID:
310 exception->retry = 1;
312 case -NFS4ERR_BADOWNER:
313 /* The following works around a Linux server bug! */
314 case -NFS4ERR_BADNAME:
315 if (server->caps & NFS_CAP_UIDGID_NOMAP) {
316 server->caps &= ~NFS_CAP_UIDGID_NOMAP;
317 exception->retry = 1;
318 printk(KERN_WARNING "NFS: v4 server %s "
319 "does not accept raw "
321 "Reenabling the idmapper.\n",
322 server->nfs_client->cl_hostname);
325 /* We failed to handle the error */
326 return nfs4_map_errors(ret);
328 ret = nfs4_wait_clnt_recover(clp);
330 exception->retry = 1;
335 static void do_renew_lease(struct nfs_client *clp, unsigned long timestamp)
337 spin_lock(&clp->cl_lock);
338 if (time_before(clp->cl_last_renewal,timestamp))
339 clp->cl_last_renewal = timestamp;
340 spin_unlock(&clp->cl_lock);
343 static void renew_lease(const struct nfs_server *server, unsigned long timestamp)
345 do_renew_lease(server->nfs_client, timestamp);
348 #if defined(CONFIG_NFS_V4_1)
351 * nfs4_free_slot - free a slot and efficiently update slot table.
353 * freeing a slot is trivially done by clearing its respective bit
355 * If the freed slotid equals highest_used_slotid we want to update it
356 * so that the server would be able to size down the slot table if needed,
357 * otherwise we know that the highest_used_slotid is still in use.
358 * When updating highest_used_slotid there may be "holes" in the bitmap
359 * so we need to scan down from highest_used_slotid to 0 looking for the now
360 * highest slotid in use.
361 * If none found, highest_used_slotid is set to -1.
363 * Must be called while holding tbl->slot_tbl_lock
366 nfs4_free_slot(struct nfs4_slot_table *tbl, u8 free_slotid)
368 int slotid = free_slotid;
370 BUG_ON(slotid < 0 || slotid >= NFS4_MAX_SLOT_TABLE);
371 /* clear used bit in bitmap */
372 __clear_bit(slotid, tbl->used_slots);
374 /* update highest_used_slotid when it is freed */
375 if (slotid == tbl->highest_used_slotid) {
376 slotid = find_last_bit(tbl->used_slots, tbl->max_slots);
377 if (slotid < tbl->max_slots)
378 tbl->highest_used_slotid = slotid;
380 tbl->highest_used_slotid = -1;
382 dprintk("%s: free_slotid %u highest_used_slotid %d\n", __func__,
383 free_slotid, tbl->highest_used_slotid);
387 * Signal state manager thread if session fore channel is drained
389 static void nfs4_check_drain_fc_complete(struct nfs4_session *ses)
391 struct rpc_task *task;
393 if (!test_bit(NFS4_SESSION_DRAINING, &ses->session_state)) {
394 task = rpc_wake_up_next(&ses->fc_slot_table.slot_tbl_waitq);
396 rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED);
400 if (ses->fc_slot_table.highest_used_slotid != -1)
403 dprintk("%s COMPLETE: Session Fore Channel Drained\n", __func__);
404 complete(&ses->fc_slot_table.complete);
408 * Signal state manager thread if session back channel is drained
410 void nfs4_check_drain_bc_complete(struct nfs4_session *ses)
412 if (!test_bit(NFS4_SESSION_DRAINING, &ses->session_state) ||
413 ses->bc_slot_table.highest_used_slotid != -1)
415 dprintk("%s COMPLETE: Session Back Channel Drained\n", __func__);
416 complete(&ses->bc_slot_table.complete);
419 static void nfs41_sequence_free_slot(struct nfs4_sequence_res *res)
421 struct nfs4_slot_table *tbl;
423 tbl = &res->sr_session->fc_slot_table;
425 /* just wake up the next guy waiting since
426 * we may have not consumed a slot after all */
427 dprintk("%s: No slot\n", __func__);
431 spin_lock(&tbl->slot_tbl_lock);
432 nfs4_free_slot(tbl, res->sr_slot - tbl->slots);
433 nfs4_check_drain_fc_complete(res->sr_session);
434 spin_unlock(&tbl->slot_tbl_lock);
438 static int nfs41_sequence_done(struct rpc_task *task, struct nfs4_sequence_res *res)
440 unsigned long timestamp;
441 struct nfs_client *clp;
444 * sr_status remains 1 if an RPC level error occurred. The server
445 * may or may not have processed the sequence operation..
446 * Proceed as if the server received and processed the sequence
449 if (res->sr_status == 1)
450 res->sr_status = NFS_OK;
452 /* don't increment the sequence number if the task wasn't sent */
453 if (!RPC_WAS_SENT(task))
456 /* Check the SEQUENCE operation status */
457 switch (res->sr_status) {
459 /* Update the slot's sequence and clientid lease timer */
460 ++res->sr_slot->seq_nr;
461 timestamp = res->sr_renewal_time;
462 clp = res->sr_session->clp;
463 do_renew_lease(clp, timestamp);
464 /* Check sequence flags */
465 if (res->sr_status_flags != 0)
466 nfs4_schedule_lease_recovery(clp);
469 /* The server detected a resend of the RPC call and
470 * returned NFS4ERR_DELAY as per Section 2.10.6.2
473 dprintk("%s: slot=%td seq=%d: Operation in progress\n",
475 res->sr_slot - res->sr_session->fc_slot_table.slots,
476 res->sr_slot->seq_nr);
479 /* Just update the slot sequence no. */
480 ++res->sr_slot->seq_nr;
483 /* The session may be reset by one of the error handlers. */
484 dprintk("%s: Error %d free the slot \n", __func__, res->sr_status);
485 nfs41_sequence_free_slot(res);
488 if (!rpc_restart_call(task))
490 rpc_delay(task, NFS4_POLL_RETRY_MAX);
494 static int nfs4_sequence_done(struct rpc_task *task,
495 struct nfs4_sequence_res *res)
497 if (res->sr_session == NULL)
499 return nfs41_sequence_done(task, res);
503 * nfs4_find_slot - efficiently look for a free slot
505 * nfs4_find_slot looks for an unset bit in the used_slots bitmap.
506 * If found, we mark the slot as used, update the highest_used_slotid,
507 * and respectively set up the sequence operation args.
508 * The slot number is returned if found, or NFS4_MAX_SLOT_TABLE otherwise.
510 * Note: must be called with under the slot_tbl_lock.
513 nfs4_find_slot(struct nfs4_slot_table *tbl)
516 u8 ret_id = NFS4_MAX_SLOT_TABLE;
517 BUILD_BUG_ON((u8)NFS4_MAX_SLOT_TABLE != (int)NFS4_MAX_SLOT_TABLE);
519 dprintk("--> %s used_slots=%04lx highest_used=%d max_slots=%d\n",
520 __func__, tbl->used_slots[0], tbl->highest_used_slotid,
522 slotid = find_first_zero_bit(tbl->used_slots, tbl->max_slots);
523 if (slotid >= tbl->max_slots)
525 __set_bit(slotid, tbl->used_slots);
526 if (slotid > tbl->highest_used_slotid)
527 tbl->highest_used_slotid = slotid;
530 dprintk("<-- %s used_slots=%04lx highest_used=%d slotid=%d \n",
531 __func__, tbl->used_slots[0], tbl->highest_used_slotid, ret_id);
535 int nfs41_setup_sequence(struct nfs4_session *session,
536 struct nfs4_sequence_args *args,
537 struct nfs4_sequence_res *res,
539 struct rpc_task *task)
541 struct nfs4_slot *slot;
542 struct nfs4_slot_table *tbl;
545 dprintk("--> %s\n", __func__);
546 /* slot already allocated? */
547 if (res->sr_slot != NULL)
550 tbl = &session->fc_slot_table;
552 spin_lock(&tbl->slot_tbl_lock);
553 if (test_bit(NFS4_SESSION_DRAINING, &session->session_state) &&
554 !rpc_task_has_priority(task, RPC_PRIORITY_PRIVILEGED)) {
555 /* The state manager will wait until the slot table is empty */
556 rpc_sleep_on(&tbl->slot_tbl_waitq, task, NULL);
557 spin_unlock(&tbl->slot_tbl_lock);
558 dprintk("%s session is draining\n", __func__);
562 if (!rpc_queue_empty(&tbl->slot_tbl_waitq) &&
563 !rpc_task_has_priority(task, RPC_PRIORITY_PRIVILEGED)) {
564 rpc_sleep_on(&tbl->slot_tbl_waitq, task, NULL);
565 spin_unlock(&tbl->slot_tbl_lock);
566 dprintk("%s enforce FIFO order\n", __func__);
570 slotid = nfs4_find_slot(tbl);
571 if (slotid == NFS4_MAX_SLOT_TABLE) {
572 rpc_sleep_on(&tbl->slot_tbl_waitq, task, NULL);
573 spin_unlock(&tbl->slot_tbl_lock);
574 dprintk("<-- %s: no free slots\n", __func__);
577 spin_unlock(&tbl->slot_tbl_lock);
579 rpc_task_set_priority(task, RPC_PRIORITY_NORMAL);
580 slot = tbl->slots + slotid;
581 args->sa_session = session;
582 args->sa_slotid = slotid;
583 args->sa_cache_this = cache_reply;
585 dprintk("<-- %s slotid=%d seqid=%d\n", __func__, slotid, slot->seq_nr);
587 res->sr_session = session;
589 res->sr_renewal_time = jiffies;
590 res->sr_status_flags = 0;
592 * sr_status is only set in decode_sequence, and so will remain
593 * set to 1 if an rpc level failure occurs.
598 EXPORT_SYMBOL_GPL(nfs41_setup_sequence);
600 int nfs4_setup_sequence(const struct nfs_server *server,
601 struct nfs4_sequence_args *args,
602 struct nfs4_sequence_res *res,
604 struct rpc_task *task)
606 struct nfs4_session *session = nfs4_get_session(server);
609 if (session == NULL) {
610 args->sa_session = NULL;
611 res->sr_session = NULL;
615 dprintk("--> %s clp %p session %p sr_slot %td\n",
616 __func__, session->clp, session, res->sr_slot ?
617 res->sr_slot - session->fc_slot_table.slots : -1);
619 ret = nfs41_setup_sequence(session, args, res, cache_reply,
622 dprintk("<-- %s status=%d\n", __func__, ret);
626 struct nfs41_call_sync_data {
627 const struct nfs_server *seq_server;
628 struct nfs4_sequence_args *seq_args;
629 struct nfs4_sequence_res *seq_res;
633 static void nfs41_call_sync_prepare(struct rpc_task *task, void *calldata)
635 struct nfs41_call_sync_data *data = calldata;
637 dprintk("--> %s data->seq_server %p\n", __func__, data->seq_server);
639 if (nfs4_setup_sequence(data->seq_server, data->seq_args,
640 data->seq_res, data->cache_reply, task))
642 rpc_call_start(task);
645 static void nfs41_call_priv_sync_prepare(struct rpc_task *task, void *calldata)
647 rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED);
648 nfs41_call_sync_prepare(task, calldata);
651 static void nfs41_call_sync_done(struct rpc_task *task, void *calldata)
653 struct nfs41_call_sync_data *data = calldata;
655 nfs41_sequence_done(task, data->seq_res);
658 struct rpc_call_ops nfs41_call_sync_ops = {
659 .rpc_call_prepare = nfs41_call_sync_prepare,
660 .rpc_call_done = nfs41_call_sync_done,
663 struct rpc_call_ops nfs41_call_priv_sync_ops = {
664 .rpc_call_prepare = nfs41_call_priv_sync_prepare,
665 .rpc_call_done = nfs41_call_sync_done,
668 static int nfs4_call_sync_sequence(struct rpc_clnt *clnt,
669 struct nfs_server *server,
670 struct rpc_message *msg,
671 struct nfs4_sequence_args *args,
672 struct nfs4_sequence_res *res,
677 struct rpc_task *task;
678 struct nfs41_call_sync_data data = {
679 .seq_server = server,
682 .cache_reply = cache_reply,
684 struct rpc_task_setup task_setup = {
687 .callback_ops = &nfs41_call_sync_ops,
688 .callback_data = &data
693 task_setup.callback_ops = &nfs41_call_priv_sync_ops;
694 task = rpc_run_task(&task_setup);
698 ret = task->tk_status;
704 int _nfs4_call_sync_session(struct rpc_clnt *clnt,
705 struct nfs_server *server,
706 struct rpc_message *msg,
707 struct nfs4_sequence_args *args,
708 struct nfs4_sequence_res *res,
711 return nfs4_call_sync_sequence(clnt, server, msg, args, res, cache_reply, 0);
715 static int nfs4_sequence_done(struct rpc_task *task,
716 struct nfs4_sequence_res *res)
720 #endif /* CONFIG_NFS_V4_1 */
722 int _nfs4_call_sync(struct rpc_clnt *clnt,
723 struct nfs_server *server,
724 struct rpc_message *msg,
725 struct nfs4_sequence_args *args,
726 struct nfs4_sequence_res *res,
729 args->sa_session = res->sr_session = NULL;
730 return rpc_call_sync(clnt, msg, 0);
734 int nfs4_call_sync(struct rpc_clnt *clnt,
735 struct nfs_server *server,
736 struct rpc_message *msg,
737 struct nfs4_sequence_args *args,
738 struct nfs4_sequence_res *res,
741 return server->nfs_client->cl_mvops->call_sync(clnt, server, msg,
742 args, res, cache_reply);
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_REVAL_PAGECACHE|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 spin_unlock(&dir->i_lock);
757 struct nfs4_opendata {
759 struct nfs_openargs o_arg;
760 struct nfs_openres o_res;
761 struct nfs_open_confirmargs c_arg;
762 struct nfs_open_confirmres c_res;
763 struct nfs_fattr f_attr;
764 struct nfs_fattr dir_attr;
766 struct dentry *dentry;
767 struct nfs4_state_owner *owner;
768 struct nfs4_state *state;
770 unsigned long timestamp;
771 unsigned int rpc_done : 1;
777 static void nfs4_init_opendata_res(struct nfs4_opendata *p)
779 p->o_res.f_attr = &p->f_attr;
780 p->o_res.dir_attr = &p->dir_attr;
781 p->o_res.seqid = p->o_arg.seqid;
782 p->c_res.seqid = p->c_arg.seqid;
783 p->o_res.server = p->o_arg.server;
784 nfs_fattr_init(&p->f_attr);
785 nfs_fattr_init(&p->dir_attr);
788 static struct nfs4_opendata *nfs4_opendata_alloc(struct dentry *dentry,
789 struct nfs4_state_owner *sp, fmode_t fmode, int flags,
790 const struct iattr *attrs,
793 struct dentry *parent = dget_parent(dentry);
794 struct inode *dir = parent->d_inode;
795 struct nfs_server *server = NFS_SERVER(dir);
796 struct nfs4_opendata *p;
798 p = kzalloc(sizeof(*p), gfp_mask);
801 p->o_arg.seqid = nfs_alloc_seqid(&sp->so_seqid, gfp_mask);
802 if (p->o_arg.seqid == NULL)
804 nfs_sb_active(dentry->d_sb);
805 p->dentry = dget(dentry);
808 atomic_inc(&sp->so_count);
809 p->o_arg.fh = NFS_FH(dir);
810 p->o_arg.open_flags = flags;
811 p->o_arg.fmode = fmode & (FMODE_READ|FMODE_WRITE);
812 p->o_arg.clientid = server->nfs_client->cl_clientid;
813 p->o_arg.id = sp->so_owner_id.id;
814 p->o_arg.name = &dentry->d_name;
815 p->o_arg.server = server;
816 p->o_arg.bitmask = server->attr_bitmask;
817 p->o_arg.claim = NFS4_OPEN_CLAIM_NULL;
818 if (flags & O_CREAT) {
821 p->o_arg.u.attrs = &p->attrs;
822 memcpy(&p->attrs, attrs, sizeof(p->attrs));
823 s = (u32 *) p->o_arg.u.verifier.data;
827 p->c_arg.fh = &p->o_res.fh;
828 p->c_arg.stateid = &p->o_res.stateid;
829 p->c_arg.seqid = p->o_arg.seqid;
830 nfs4_init_opendata_res(p);
840 static void nfs4_opendata_free(struct kref *kref)
842 struct nfs4_opendata *p = container_of(kref,
843 struct nfs4_opendata, kref);
844 struct super_block *sb = p->dentry->d_sb;
846 nfs_free_seqid(p->o_arg.seqid);
847 if (p->state != NULL)
848 nfs4_put_open_state(p->state);
849 nfs4_put_state_owner(p->owner);
856 static void nfs4_opendata_put(struct nfs4_opendata *p)
859 kref_put(&p->kref, nfs4_opendata_free);
862 static int nfs4_wait_for_completion_rpc_task(struct rpc_task *task)
866 ret = rpc_wait_for_completion_task(task);
870 static int can_open_cached(struct nfs4_state *state, fmode_t mode, int open_mode)
874 if (open_mode & O_EXCL)
876 switch (mode & (FMODE_READ|FMODE_WRITE)) {
878 ret |= test_bit(NFS_O_RDONLY_STATE, &state->flags) != 0
879 && state->n_rdonly != 0;
882 ret |= test_bit(NFS_O_WRONLY_STATE, &state->flags) != 0
883 && state->n_wronly != 0;
885 case FMODE_READ|FMODE_WRITE:
886 ret |= test_bit(NFS_O_RDWR_STATE, &state->flags) != 0
887 && state->n_rdwr != 0;
893 static int can_open_delegated(struct nfs_delegation *delegation, fmode_t fmode)
895 if (delegation == NULL)
897 if ((delegation->type & fmode) != fmode)
899 if (test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags))
901 nfs_mark_delegation_referenced(delegation);
905 static void update_open_stateflags(struct nfs4_state *state, fmode_t fmode)
914 case FMODE_READ|FMODE_WRITE:
917 nfs4_state_set_mode_locked(state, state->state | fmode);
920 static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode)
922 if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0)
923 memcpy(state->stateid.data, stateid->data, sizeof(state->stateid.data));
924 memcpy(state->open_stateid.data, stateid->data, sizeof(state->open_stateid.data));
927 set_bit(NFS_O_RDONLY_STATE, &state->flags);
930 set_bit(NFS_O_WRONLY_STATE, &state->flags);
932 case FMODE_READ|FMODE_WRITE:
933 set_bit(NFS_O_RDWR_STATE, &state->flags);
937 static void nfs_set_open_stateid(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode)
939 write_seqlock(&state->seqlock);
940 nfs_set_open_stateid_locked(state, stateid, fmode);
941 write_sequnlock(&state->seqlock);
944 static void __update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, const nfs4_stateid *deleg_stateid, fmode_t fmode)
947 * Protect the call to nfs4_state_set_mode_locked and
948 * serialise the stateid update
950 write_seqlock(&state->seqlock);
951 if (deleg_stateid != NULL) {
952 memcpy(state->stateid.data, deleg_stateid->data, sizeof(state->stateid.data));
953 set_bit(NFS_DELEGATED_STATE, &state->flags);
955 if (open_stateid != NULL)
956 nfs_set_open_stateid_locked(state, open_stateid, fmode);
957 write_sequnlock(&state->seqlock);
958 spin_lock(&state->owner->so_lock);
959 update_open_stateflags(state, fmode);
960 spin_unlock(&state->owner->so_lock);
963 static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, nfs4_stateid *delegation, fmode_t fmode)
965 struct nfs_inode *nfsi = NFS_I(state->inode);
966 struct nfs_delegation *deleg_cur;
969 fmode &= (FMODE_READ|FMODE_WRITE);
972 deleg_cur = rcu_dereference(nfsi->delegation);
973 if (deleg_cur == NULL)
976 spin_lock(&deleg_cur->lock);
977 if (nfsi->delegation != deleg_cur ||
978 (deleg_cur->type & fmode) != fmode)
979 goto no_delegation_unlock;
981 if (delegation == NULL)
982 delegation = &deleg_cur->stateid;
983 else if (memcmp(deleg_cur->stateid.data, delegation->data, NFS4_STATEID_SIZE) != 0)
984 goto no_delegation_unlock;
986 nfs_mark_delegation_referenced(deleg_cur);
987 __update_open_stateid(state, open_stateid, &deleg_cur->stateid, fmode);
989 no_delegation_unlock:
990 spin_unlock(&deleg_cur->lock);
994 if (!ret && open_stateid != NULL) {
995 __update_open_stateid(state, open_stateid, NULL, fmode);
1003 static void nfs4_return_incompatible_delegation(struct inode *inode, fmode_t fmode)
1005 struct nfs_delegation *delegation;
1008 delegation = rcu_dereference(NFS_I(inode)->delegation);
1009 if (delegation == NULL || (delegation->type & fmode) == fmode) {
1014 nfs_inode_return_delegation(inode);
1017 static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata)
1019 struct nfs4_state *state = opendata->state;
1020 struct nfs_inode *nfsi = NFS_I(state->inode);
1021 struct nfs_delegation *delegation;
1022 int open_mode = opendata->o_arg.open_flags & O_EXCL;
1023 fmode_t fmode = opendata->o_arg.fmode;
1024 nfs4_stateid stateid;
1028 if (can_open_cached(state, fmode, open_mode)) {
1029 spin_lock(&state->owner->so_lock);
1030 if (can_open_cached(state, fmode, open_mode)) {
1031 update_open_stateflags(state, fmode);
1032 spin_unlock(&state->owner->so_lock);
1033 goto out_return_state;
1035 spin_unlock(&state->owner->so_lock);
1038 delegation = rcu_dereference(nfsi->delegation);
1039 if (!can_open_delegated(delegation, fmode)) {
1043 /* Save the delegation */
1044 memcpy(stateid.data, delegation->stateid.data, sizeof(stateid.data));
1046 ret = nfs_may_open(state->inode, state->owner->so_cred, open_mode);
1051 /* Try to update the stateid using the delegation */
1052 if (update_open_stateid(state, NULL, &stateid, fmode))
1053 goto out_return_state;
1056 return ERR_PTR(ret);
1058 atomic_inc(&state->count);
1062 static struct nfs4_state *nfs4_opendata_to_nfs4_state(struct nfs4_opendata *data)
1064 struct inode *inode;
1065 struct nfs4_state *state = NULL;
1066 struct nfs_delegation *delegation;
1069 if (!data->rpc_done) {
1070 state = nfs4_try_open_cached(data);
1075 if (!(data->f_attr.valid & NFS_ATTR_FATTR))
1077 inode = nfs_fhget(data->dir->d_sb, &data->o_res.fh, &data->f_attr);
1078 ret = PTR_ERR(inode);
1082 state = nfs4_get_open_state(inode, data->owner);
1085 if (data->o_res.delegation_type != 0) {
1086 int delegation_flags = 0;
1089 delegation = rcu_dereference(NFS_I(inode)->delegation);
1091 delegation_flags = delegation->flags;
1093 if (data->o_arg.claim == NFS4_OPEN_CLAIM_DELEGATE_CUR) {
1094 pr_err_ratelimited("NFS: Broken NFSv4 server %s is "
1095 "returning a delegation for "
1096 "OPEN(CLAIM_DELEGATE_CUR)\n",
1097 NFS_CLIENT(inode)->cl_server);
1098 } else if ((delegation_flags & 1UL<<NFS_DELEGATION_NEED_RECLAIM) == 0)
1099 nfs_inode_set_delegation(state->inode,
1100 data->owner->so_cred,
1103 nfs_inode_reclaim_delegation(state->inode,
1104 data->owner->so_cred,
1108 update_open_stateid(state, &data->o_res.stateid, NULL,
1116 return ERR_PTR(ret);
1119 static struct nfs_open_context *nfs4_state_find_open_context(struct nfs4_state *state)
1121 struct nfs_inode *nfsi = NFS_I(state->inode);
1122 struct nfs_open_context *ctx;
1124 spin_lock(&state->inode->i_lock);
1125 list_for_each_entry(ctx, &nfsi->open_files, list) {
1126 if (ctx->state != state)
1128 get_nfs_open_context(ctx);
1129 spin_unlock(&state->inode->i_lock);
1132 spin_unlock(&state->inode->i_lock);
1133 return ERR_PTR(-ENOENT);
1136 static struct nfs4_opendata *nfs4_open_recoverdata_alloc(struct nfs_open_context *ctx, struct nfs4_state *state)
1138 struct nfs4_opendata *opendata;
1140 opendata = nfs4_opendata_alloc(ctx->dentry, state->owner, 0, 0, NULL, GFP_NOFS);
1141 if (opendata == NULL)
1142 return ERR_PTR(-ENOMEM);
1143 opendata->state = state;
1144 atomic_inc(&state->count);
1148 static int nfs4_open_recover_helper(struct nfs4_opendata *opendata, fmode_t fmode, struct nfs4_state **res)
1150 struct nfs4_state *newstate;
1153 opendata->o_arg.open_flags = 0;
1154 opendata->o_arg.fmode = fmode;
1155 memset(&opendata->o_res, 0, sizeof(opendata->o_res));
1156 memset(&opendata->c_res, 0, sizeof(opendata->c_res));
1157 nfs4_init_opendata_res(opendata);
1158 ret = _nfs4_recover_proc_open(opendata);
1161 newstate = nfs4_opendata_to_nfs4_state(opendata);
1162 if (IS_ERR(newstate))
1163 return PTR_ERR(newstate);
1164 nfs4_close_state(newstate, fmode);
1169 static int nfs4_open_recover(struct nfs4_opendata *opendata, struct nfs4_state *state)
1171 struct nfs4_state *newstate;
1174 /* memory barrier prior to reading state->n_* */
1175 clear_bit(NFS_DELEGATED_STATE, &state->flags);
1177 if (state->n_rdwr != 0) {
1178 clear_bit(NFS_O_RDWR_STATE, &state->flags);
1179 ret = nfs4_open_recover_helper(opendata, FMODE_READ|FMODE_WRITE, &newstate);
1182 if (newstate != state)
1185 if (state->n_wronly != 0) {
1186 clear_bit(NFS_O_WRONLY_STATE, &state->flags);
1187 ret = nfs4_open_recover_helper(opendata, FMODE_WRITE, &newstate);
1190 if (newstate != state)
1193 if (state->n_rdonly != 0) {
1194 clear_bit(NFS_O_RDONLY_STATE, &state->flags);
1195 ret = nfs4_open_recover_helper(opendata, FMODE_READ, &newstate);
1198 if (newstate != state)
1202 * We may have performed cached opens for all three recoveries.
1203 * Check if we need to update the current stateid.
1205 if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0 &&
1206 memcmp(state->stateid.data, state->open_stateid.data, sizeof(state->stateid.data)) != 0) {
1207 write_seqlock(&state->seqlock);
1208 if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0)
1209 memcpy(state->stateid.data, state->open_stateid.data, sizeof(state->stateid.data));
1210 write_sequnlock(&state->seqlock);
1217 * reclaim state on the server after a reboot.
1219 static int _nfs4_do_open_reclaim(struct nfs_open_context *ctx, struct nfs4_state *state)
1221 struct nfs_delegation *delegation;
1222 struct nfs4_opendata *opendata;
1223 fmode_t delegation_type = 0;
1226 opendata = nfs4_open_recoverdata_alloc(ctx, state);
1227 if (IS_ERR(opendata))
1228 return PTR_ERR(opendata);
1229 opendata->o_arg.claim = NFS4_OPEN_CLAIM_PREVIOUS;
1230 opendata->o_arg.fh = NFS_FH(state->inode);
1232 delegation = rcu_dereference(NFS_I(state->inode)->delegation);
1233 if (delegation != NULL && test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags) != 0)
1234 delegation_type = delegation->type;
1236 opendata->o_arg.u.delegation_type = delegation_type;
1237 status = nfs4_open_recover(opendata, state);
1238 nfs4_opendata_put(opendata);
1242 static int nfs4_do_open_reclaim(struct nfs_open_context *ctx, struct nfs4_state *state)
1244 struct nfs_server *server = NFS_SERVER(state->inode);
1245 struct nfs4_exception exception = { };
1248 err = _nfs4_do_open_reclaim(ctx, state);
1249 if (err != -NFS4ERR_DELAY)
1251 nfs4_handle_exception(server, err, &exception);
1252 } while (exception.retry);
1256 static int nfs4_open_reclaim(struct nfs4_state_owner *sp, struct nfs4_state *state)
1258 struct nfs_open_context *ctx;
1261 ctx = nfs4_state_find_open_context(state);
1263 return PTR_ERR(ctx);
1264 ret = nfs4_do_open_reclaim(ctx, state);
1265 put_nfs_open_context(ctx);
1269 static int _nfs4_open_delegation_recall(struct nfs_open_context *ctx, struct nfs4_state *state, const nfs4_stateid *stateid)
1271 struct nfs4_opendata *opendata;
1274 opendata = nfs4_open_recoverdata_alloc(ctx, state);
1275 if (IS_ERR(opendata))
1276 return PTR_ERR(opendata);
1277 opendata->o_arg.claim = NFS4_OPEN_CLAIM_DELEGATE_CUR;
1278 memcpy(opendata->o_arg.u.delegation.data, stateid->data,
1279 sizeof(opendata->o_arg.u.delegation.data));
1280 ret = nfs4_open_recover(opendata, state);
1281 nfs4_opendata_put(opendata);
1285 int nfs4_open_delegation_recall(struct nfs_open_context *ctx, struct nfs4_state *state, const nfs4_stateid *stateid)
1287 struct nfs4_exception exception = { };
1288 struct nfs_server *server = NFS_SERVER(state->inode);
1291 err = _nfs4_open_delegation_recall(ctx, state, stateid);
1297 case -NFS4ERR_BADSESSION:
1298 case -NFS4ERR_BADSLOT:
1299 case -NFS4ERR_BAD_HIGH_SLOT:
1300 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION:
1301 case -NFS4ERR_DEADSESSION:
1302 nfs4_schedule_session_recovery(server->nfs_client->cl_session);
1304 case -NFS4ERR_STALE_CLIENTID:
1305 case -NFS4ERR_STALE_STATEID:
1306 case -NFS4ERR_EXPIRED:
1307 /* Don't recall a delegation if it was lost */
1308 nfs4_schedule_lease_recovery(server->nfs_client);
1312 * The show must go on: exit, but mark the
1313 * stateid as needing recovery.
1315 case -NFS4ERR_ADMIN_REVOKED:
1316 case -NFS4ERR_BAD_STATEID:
1317 nfs4_schedule_stateid_recovery(server, state);
1320 * User RPCSEC_GSS context has expired.
1321 * We cannot recover this stateid now, so
1322 * skip it and allow recovery thread to
1329 err = nfs4_handle_exception(server, err, &exception);
1330 } while (exception.retry);
1335 static void nfs4_open_confirm_done(struct rpc_task *task, void *calldata)
1337 struct nfs4_opendata *data = calldata;
1339 data->rpc_status = task->tk_status;
1340 if (data->rpc_status == 0) {
1341 memcpy(data->o_res.stateid.data, data->c_res.stateid.data,
1342 sizeof(data->o_res.stateid.data));
1343 nfs_confirm_seqid(&data->owner->so_seqid, 0);
1344 renew_lease(data->o_res.server, data->timestamp);
1349 static void nfs4_open_confirm_release(void *calldata)
1351 struct nfs4_opendata *data = calldata;
1352 struct nfs4_state *state = NULL;
1354 /* If this request hasn't been cancelled, do nothing */
1355 if (data->cancelled == 0)
1357 /* In case of error, no cleanup! */
1358 if (!data->rpc_done)
1360 state = nfs4_opendata_to_nfs4_state(data);
1362 nfs4_close_state(state, data->o_arg.fmode);
1364 nfs4_opendata_put(data);
1367 static const struct rpc_call_ops nfs4_open_confirm_ops = {
1368 .rpc_call_done = nfs4_open_confirm_done,
1369 .rpc_release = nfs4_open_confirm_release,
1373 * Note: On error, nfs4_proc_open_confirm will free the struct nfs4_opendata
1375 static int _nfs4_proc_open_confirm(struct nfs4_opendata *data)
1377 struct nfs_server *server = NFS_SERVER(data->dir->d_inode);
1378 struct rpc_task *task;
1379 struct rpc_message msg = {
1380 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_CONFIRM],
1381 .rpc_argp = &data->c_arg,
1382 .rpc_resp = &data->c_res,
1383 .rpc_cred = data->owner->so_cred,
1385 struct rpc_task_setup task_setup_data = {
1386 .rpc_client = server->client,
1387 .rpc_message = &msg,
1388 .callback_ops = &nfs4_open_confirm_ops,
1389 .callback_data = data,
1390 .workqueue = nfsiod_workqueue,
1391 .flags = RPC_TASK_ASYNC,
1395 kref_get(&data->kref);
1397 data->rpc_status = 0;
1398 data->timestamp = jiffies;
1399 task = rpc_run_task(&task_setup_data);
1401 return PTR_ERR(task);
1402 status = nfs4_wait_for_completion_rpc_task(task);
1404 data->cancelled = 1;
1407 status = data->rpc_status;
1412 static void nfs4_open_prepare(struct rpc_task *task, void *calldata)
1414 struct nfs4_opendata *data = calldata;
1415 struct nfs4_state_owner *sp = data->owner;
1417 if (nfs_wait_on_sequence(data->o_arg.seqid, task) != 0)
1420 * Check if we still need to send an OPEN call, or if we can use
1421 * a delegation instead.
1423 if (data->state != NULL) {
1424 struct nfs_delegation *delegation;
1426 if (can_open_cached(data->state, data->o_arg.fmode, data->o_arg.open_flags))
1429 delegation = rcu_dereference(NFS_I(data->state->inode)->delegation);
1430 if (data->o_arg.claim != NFS4_OPEN_CLAIM_DELEGATE_CUR &&
1431 can_open_delegated(delegation, data->o_arg.fmode))
1432 goto unlock_no_action;
1435 /* Update sequence id. */
1436 data->o_arg.id = sp->so_owner_id.id;
1437 data->o_arg.clientid = sp->so_server->nfs_client->cl_clientid;
1438 if (data->o_arg.claim == NFS4_OPEN_CLAIM_PREVIOUS) {
1439 task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_NOATTR];
1440 nfs_copy_fh(&data->o_res.fh, data->o_arg.fh);
1442 data->timestamp = jiffies;
1443 if (nfs4_setup_sequence(data->o_arg.server,
1444 &data->o_arg.seq_args,
1445 &data->o_res.seq_res, 1, task))
1447 rpc_call_start(task);
1452 task->tk_action = NULL;
1456 static void nfs4_recover_open_prepare(struct rpc_task *task, void *calldata)
1458 rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED);
1459 nfs4_open_prepare(task, calldata);
1462 static void nfs4_open_done(struct rpc_task *task, void *calldata)
1464 struct nfs4_opendata *data = calldata;
1466 data->rpc_status = task->tk_status;
1468 if (!nfs4_sequence_done(task, &data->o_res.seq_res))
1471 if (task->tk_status == 0) {
1472 switch (data->o_res.f_attr->mode & S_IFMT) {
1476 data->rpc_status = -ELOOP;
1479 data->rpc_status = -EISDIR;
1482 data->rpc_status = -ENOTDIR;
1484 renew_lease(data->o_res.server, data->timestamp);
1485 if (!(data->o_res.rflags & NFS4_OPEN_RESULT_CONFIRM))
1486 nfs_confirm_seqid(&data->owner->so_seqid, 0);
1491 static void nfs4_open_release(void *calldata)
1493 struct nfs4_opendata *data = calldata;
1494 struct nfs4_state *state = NULL;
1496 /* If this request hasn't been cancelled, do nothing */
1497 if (data->cancelled == 0)
1499 /* In case of error, no cleanup! */
1500 if (data->rpc_status != 0 || !data->rpc_done)
1502 /* In case we need an open_confirm, no cleanup! */
1503 if (data->o_res.rflags & NFS4_OPEN_RESULT_CONFIRM)
1505 state = nfs4_opendata_to_nfs4_state(data);
1507 nfs4_close_state(state, data->o_arg.fmode);
1509 nfs4_opendata_put(data);
1512 static const struct rpc_call_ops nfs4_open_ops = {
1513 .rpc_call_prepare = nfs4_open_prepare,
1514 .rpc_call_done = nfs4_open_done,
1515 .rpc_release = nfs4_open_release,
1518 static const struct rpc_call_ops nfs4_recover_open_ops = {
1519 .rpc_call_prepare = nfs4_recover_open_prepare,
1520 .rpc_call_done = nfs4_open_done,
1521 .rpc_release = nfs4_open_release,
1524 static int nfs4_run_open_task(struct nfs4_opendata *data, int isrecover)
1526 struct inode *dir = data->dir->d_inode;
1527 struct nfs_server *server = NFS_SERVER(dir);
1528 struct nfs_openargs *o_arg = &data->o_arg;
1529 struct nfs_openres *o_res = &data->o_res;
1530 struct rpc_task *task;
1531 struct rpc_message msg = {
1532 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN],
1535 .rpc_cred = data->owner->so_cred,
1537 struct rpc_task_setup task_setup_data = {
1538 .rpc_client = server->client,
1539 .rpc_message = &msg,
1540 .callback_ops = &nfs4_open_ops,
1541 .callback_data = data,
1542 .workqueue = nfsiod_workqueue,
1543 .flags = RPC_TASK_ASYNC,
1547 kref_get(&data->kref);
1549 data->rpc_status = 0;
1550 data->cancelled = 0;
1552 task_setup_data.callback_ops = &nfs4_recover_open_ops;
1553 task = rpc_run_task(&task_setup_data);
1555 return PTR_ERR(task);
1556 status = nfs4_wait_for_completion_rpc_task(task);
1558 data->cancelled = 1;
1561 status = data->rpc_status;
1567 static int _nfs4_recover_proc_open(struct nfs4_opendata *data)
1569 struct inode *dir = data->dir->d_inode;
1570 struct nfs_openres *o_res = &data->o_res;
1573 status = nfs4_run_open_task(data, 1);
1574 if (status != 0 || !data->rpc_done)
1577 nfs_refresh_inode(dir, o_res->dir_attr);
1579 if (o_res->rflags & NFS4_OPEN_RESULT_CONFIRM) {
1580 status = _nfs4_proc_open_confirm(data);
1589 * Note: On error, nfs4_proc_open will free the struct nfs4_opendata
1591 static int _nfs4_proc_open(struct nfs4_opendata *data)
1593 struct inode *dir = data->dir->d_inode;
1594 struct nfs_server *server = NFS_SERVER(dir);
1595 struct nfs_openargs *o_arg = &data->o_arg;
1596 struct nfs_openres *o_res = &data->o_res;
1599 status = nfs4_run_open_task(data, 0);
1600 if (!data->rpc_done)
1603 if (status == -NFS4ERR_BADNAME &&
1604 !(o_arg->open_flags & O_CREAT))
1609 if (o_arg->open_flags & O_CREAT) {
1610 update_changeattr(dir, &o_res->cinfo);
1611 nfs_post_op_update_inode(dir, o_res->dir_attr);
1613 nfs_refresh_inode(dir, o_res->dir_attr);
1614 if ((o_res->rflags & NFS4_OPEN_RESULT_LOCKTYPE_POSIX) == 0)
1615 server->caps &= ~NFS_CAP_POSIX_LOCK;
1616 if(o_res->rflags & NFS4_OPEN_RESULT_CONFIRM) {
1617 status = _nfs4_proc_open_confirm(data);
1621 if (!(o_res->f_attr->valid & NFS_ATTR_FATTR))
1622 _nfs4_proc_getattr(server, &o_res->fh, o_res->f_attr);
1626 static int nfs4_client_recover_expired_lease(struct nfs_client *clp)
1631 for (loop = NFS4_MAX_LOOP_ON_RECOVER; loop != 0; loop--) {
1632 ret = nfs4_wait_clnt_recover(clp);
1635 if (!test_bit(NFS4CLNT_LEASE_EXPIRED, &clp->cl_state) &&
1636 !test_bit(NFS4CLNT_CHECK_LEASE,&clp->cl_state))
1638 nfs4_schedule_state_manager(clp);
1644 static int nfs4_recover_expired_lease(struct nfs_server *server)
1646 return nfs4_client_recover_expired_lease(server->nfs_client);
1651 * reclaim state on the server after a network partition.
1652 * Assumes caller holds the appropriate lock
1654 static int _nfs4_open_expired(struct nfs_open_context *ctx, struct nfs4_state *state)
1656 struct nfs4_opendata *opendata;
1659 opendata = nfs4_open_recoverdata_alloc(ctx, state);
1660 if (IS_ERR(opendata))
1661 return PTR_ERR(opendata);
1662 ret = nfs4_open_recover(opendata, state);
1664 d_drop(ctx->dentry);
1665 nfs4_opendata_put(opendata);
1669 static int nfs4_do_open_expired(struct nfs_open_context *ctx, struct nfs4_state *state)
1671 struct nfs_server *server = NFS_SERVER(state->inode);
1672 struct nfs4_exception exception = { };
1676 err = _nfs4_open_expired(ctx, state);
1680 case -NFS4ERR_GRACE:
1681 case -NFS4ERR_DELAY:
1682 nfs4_handle_exception(server, err, &exception);
1685 } while (exception.retry);
1690 static int nfs4_open_expired(struct nfs4_state_owner *sp, struct nfs4_state *state)
1692 struct nfs_open_context *ctx;
1695 ctx = nfs4_state_find_open_context(state);
1697 return PTR_ERR(ctx);
1698 ret = nfs4_do_open_expired(ctx, state);
1699 put_nfs_open_context(ctx);
1703 #if defined(CONFIG_NFS_V4_1)
1704 static int nfs41_open_expired(struct nfs4_state_owner *sp, struct nfs4_state *state)
1707 struct nfs_server *server = NFS_SERVER(state->inode);
1709 status = nfs41_test_stateid(server, state);
1710 if (status == NFS_OK)
1712 nfs41_free_stateid(server, state);
1713 return nfs4_open_expired(sp, state);
1718 * on an EXCLUSIVE create, the server should send back a bitmask with FATTR4-*
1719 * fields corresponding to attributes that were used to store the verifier.
1720 * Make sure we clobber those fields in the later setattr call
1722 static inline void nfs4_exclusive_attrset(struct nfs4_opendata *opendata, struct iattr *sattr)
1724 if ((opendata->o_res.attrset[1] & FATTR4_WORD1_TIME_ACCESS) &&
1725 !(sattr->ia_valid & ATTR_ATIME_SET))
1726 sattr->ia_valid |= ATTR_ATIME;
1728 if ((opendata->o_res.attrset[1] & FATTR4_WORD1_TIME_MODIFY) &&
1729 !(sattr->ia_valid & ATTR_MTIME_SET))
1730 sattr->ia_valid |= ATTR_MTIME;
1734 * Returns a referenced nfs4_state
1736 static int _nfs4_do_open(struct inode *dir, struct dentry *dentry, fmode_t fmode, int flags, struct iattr *sattr, struct rpc_cred *cred, struct nfs4_state **res)
1738 struct nfs4_state_owner *sp;
1739 struct nfs4_state *state = NULL;
1740 struct nfs_server *server = NFS_SERVER(dir);
1741 struct nfs4_opendata *opendata;
1744 /* Protect against reboot recovery conflicts */
1746 if (!(sp = nfs4_get_state_owner(server, cred))) {
1747 dprintk("nfs4_do_open: nfs4_get_state_owner failed!\n");
1750 status = nfs4_recover_expired_lease(server);
1752 goto err_put_state_owner;
1753 if (dentry->d_inode != NULL)
1754 nfs4_return_incompatible_delegation(dentry->d_inode, fmode);
1756 opendata = nfs4_opendata_alloc(dentry, sp, fmode, flags, sattr, GFP_KERNEL);
1757 if (opendata == NULL)
1758 goto err_put_state_owner;
1760 if (dentry->d_inode != NULL)
1761 opendata->state = nfs4_get_open_state(dentry->d_inode, sp);
1763 status = _nfs4_proc_open(opendata);
1765 goto err_opendata_put;
1767 state = nfs4_opendata_to_nfs4_state(opendata);
1768 status = PTR_ERR(state);
1770 goto err_opendata_put;
1771 if (server->caps & NFS_CAP_POSIX_LOCK)
1772 set_bit(NFS_STATE_POSIX_LOCKS, &state->flags);
1774 if (opendata->o_arg.open_flags & O_EXCL) {
1775 nfs4_exclusive_attrset(opendata, sattr);
1777 nfs_fattr_init(opendata->o_res.f_attr);
1778 status = nfs4_do_setattr(state->inode, cred,
1779 opendata->o_res.f_attr, sattr,
1782 nfs_setattr_update_inode(state->inode, sattr);
1783 nfs_post_op_update_inode(state->inode, opendata->o_res.f_attr);
1785 nfs4_opendata_put(opendata);
1786 nfs4_put_state_owner(sp);
1790 nfs4_opendata_put(opendata);
1791 err_put_state_owner:
1792 nfs4_put_state_owner(sp);
1799 static struct nfs4_state *nfs4_do_open(struct inode *dir, struct dentry *dentry, fmode_t fmode, int flags, struct iattr *sattr, struct rpc_cred *cred)
1801 struct nfs4_exception exception = { };
1802 struct nfs4_state *res;
1806 status = _nfs4_do_open(dir, dentry, fmode, flags, sattr, cred, &res);
1809 /* NOTE: BAD_SEQID means the server and client disagree about the
1810 * book-keeping w.r.t. state-changing operations
1811 * (OPEN/CLOSE/LOCK/LOCKU...)
1812 * It is actually a sign of a bug on the client or on the server.
1814 * If we receive a BAD_SEQID error in the particular case of
1815 * doing an OPEN, we assume that nfs_increment_open_seqid() will
1816 * have unhashed the old state_owner for us, and that we can
1817 * therefore safely retry using a new one. We should still warn
1818 * the user though...
1820 if (status == -NFS4ERR_BAD_SEQID) {
1821 printk(KERN_WARNING "NFS: v4 server %s "
1822 " returned a bad sequence-id error!\n",
1823 NFS_SERVER(dir)->nfs_client->cl_hostname);
1824 exception.retry = 1;
1828 * BAD_STATEID on OPEN means that the server cancelled our
1829 * state before it received the OPEN_CONFIRM.
1830 * Recover by retrying the request as per the discussion
1831 * on Page 181 of RFC3530.
1833 if (status == -NFS4ERR_BAD_STATEID) {
1834 exception.retry = 1;
1837 if (status == -EAGAIN) {
1838 /* We must have found a delegation */
1839 exception.retry = 1;
1842 res = ERR_PTR(nfs4_handle_exception(NFS_SERVER(dir),
1843 status, &exception));
1844 } while (exception.retry);
1848 static int _nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred,
1849 struct nfs_fattr *fattr, struct iattr *sattr,
1850 struct nfs4_state *state)
1852 struct nfs_server *server = NFS_SERVER(inode);
1853 struct nfs_setattrargs arg = {
1854 .fh = NFS_FH(inode),
1857 .bitmask = server->attr_bitmask,
1859 struct nfs_setattrres res = {
1863 struct rpc_message msg = {
1864 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETATTR],
1869 unsigned long timestamp = jiffies;
1872 nfs_fattr_init(fattr);
1874 if (nfs4_copy_delegation_stateid(&arg.stateid, inode)) {
1875 /* Use that stateid */
1876 } else if (state != NULL) {
1877 nfs4_copy_stateid(&arg.stateid, state, current->files, current->tgid);
1879 memcpy(&arg.stateid, &zero_stateid, sizeof(arg.stateid));
1881 status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1);
1882 if (status == 0 && state != NULL)
1883 renew_lease(server, timestamp);
1887 static int nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred,
1888 struct nfs_fattr *fattr, struct iattr *sattr,
1889 struct nfs4_state *state)
1891 struct nfs_server *server = NFS_SERVER(inode);
1892 struct nfs4_exception exception = { };
1895 err = nfs4_handle_exception(server,
1896 _nfs4_do_setattr(inode, cred, fattr, sattr, state),
1898 } while (exception.retry);
1902 struct nfs4_closedata {
1903 struct inode *inode;
1904 struct nfs4_state *state;
1905 struct nfs_closeargs arg;
1906 struct nfs_closeres res;
1907 struct nfs_fattr fattr;
1908 unsigned long timestamp;
1913 static void nfs4_free_closedata(void *data)
1915 struct nfs4_closedata *calldata = data;
1916 struct nfs4_state_owner *sp = calldata->state->owner;
1917 struct super_block *sb = calldata->state->inode->i_sb;
1920 pnfs_roc_release(calldata->state->inode);
1921 nfs4_put_open_state(calldata->state);
1922 nfs_free_seqid(calldata->arg.seqid);
1923 nfs4_put_state_owner(sp);
1924 nfs_sb_deactive(sb);
1928 static void nfs4_close_clear_stateid_flags(struct nfs4_state *state,
1931 spin_lock(&state->owner->so_lock);
1932 if (!(fmode & FMODE_READ))
1933 clear_bit(NFS_O_RDONLY_STATE, &state->flags);
1934 if (!(fmode & FMODE_WRITE))
1935 clear_bit(NFS_O_WRONLY_STATE, &state->flags);
1936 clear_bit(NFS_O_RDWR_STATE, &state->flags);
1937 spin_unlock(&state->owner->so_lock);
1940 static void nfs4_close_done(struct rpc_task *task, void *data)
1942 struct nfs4_closedata *calldata = data;
1943 struct nfs4_state *state = calldata->state;
1944 struct nfs_server *server = NFS_SERVER(calldata->inode);
1946 if (!nfs4_sequence_done(task, &calldata->res.seq_res))
1948 /* hmm. we are done with the inode, and in the process of freeing
1949 * the state_owner. we keep this around to process errors
1951 switch (task->tk_status) {
1954 pnfs_roc_set_barrier(state->inode,
1955 calldata->roc_barrier);
1956 nfs_set_open_stateid(state, &calldata->res.stateid, 0);
1957 renew_lease(server, calldata->timestamp);
1958 nfs4_close_clear_stateid_flags(state,
1959 calldata->arg.fmode);
1961 case -NFS4ERR_STALE_STATEID:
1962 case -NFS4ERR_OLD_STATEID:
1963 case -NFS4ERR_BAD_STATEID:
1964 case -NFS4ERR_EXPIRED:
1965 if (calldata->arg.fmode == 0)
1968 if (nfs4_async_handle_error(task, server, state) == -EAGAIN)
1969 rpc_restart_call_prepare(task);
1971 nfs_release_seqid(calldata->arg.seqid);
1972 nfs_refresh_inode(calldata->inode, calldata->res.fattr);
1975 static void nfs4_close_prepare(struct rpc_task *task, void *data)
1977 struct nfs4_closedata *calldata = data;
1978 struct nfs4_state *state = calldata->state;
1981 if (nfs_wait_on_sequence(calldata->arg.seqid, task) != 0)
1984 task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_DOWNGRADE];
1985 calldata->arg.fmode = FMODE_READ|FMODE_WRITE;
1986 spin_lock(&state->owner->so_lock);
1987 /* Calculate the change in open mode */
1988 if (state->n_rdwr == 0) {
1989 if (state->n_rdonly == 0) {
1990 call_close |= test_bit(NFS_O_RDONLY_STATE, &state->flags);
1991 call_close |= test_bit(NFS_O_RDWR_STATE, &state->flags);
1992 calldata->arg.fmode &= ~FMODE_READ;
1994 if (state->n_wronly == 0) {
1995 call_close |= test_bit(NFS_O_WRONLY_STATE, &state->flags);
1996 call_close |= test_bit(NFS_O_RDWR_STATE, &state->flags);
1997 calldata->arg.fmode &= ~FMODE_WRITE;
2000 spin_unlock(&state->owner->so_lock);
2003 /* Note: exit _without_ calling nfs4_close_done */
2004 task->tk_action = NULL;
2008 if (calldata->arg.fmode == 0) {
2009 task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CLOSE];
2010 if (calldata->roc &&
2011 pnfs_roc_drain(calldata->inode, &calldata->roc_barrier)) {
2012 rpc_sleep_on(&NFS_SERVER(calldata->inode)->roc_rpcwaitq,
2018 nfs_fattr_init(calldata->res.fattr);
2019 calldata->timestamp = jiffies;
2020 if (nfs4_setup_sequence(NFS_SERVER(calldata->inode),
2021 &calldata->arg.seq_args, &calldata->res.seq_res,
2024 rpc_call_start(task);
2027 static const struct rpc_call_ops nfs4_close_ops = {
2028 .rpc_call_prepare = nfs4_close_prepare,
2029 .rpc_call_done = nfs4_close_done,
2030 .rpc_release = nfs4_free_closedata,
2034 * It is possible for data to be read/written from a mem-mapped file
2035 * after the sys_close call (which hits the vfs layer as a flush).
2036 * This means that we can't safely call nfsv4 close on a file until
2037 * the inode is cleared. This in turn means that we are not good
2038 * NFSv4 citizens - we do not indicate to the server to update the file's
2039 * share state even when we are done with one of the three share
2040 * stateid's in the inode.
2042 * NOTE: Caller must be holding the sp->so_owner semaphore!
2044 int nfs4_do_close(struct nfs4_state *state, gfp_t gfp_mask, int wait, bool roc)
2046 struct nfs_server *server = NFS_SERVER(state->inode);
2047 struct nfs4_closedata *calldata;
2048 struct nfs4_state_owner *sp = state->owner;
2049 struct rpc_task *task;
2050 struct rpc_message msg = {
2051 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CLOSE],
2052 .rpc_cred = state->owner->so_cred,
2054 struct rpc_task_setup task_setup_data = {
2055 .rpc_client = server->client,
2056 .rpc_message = &msg,
2057 .callback_ops = &nfs4_close_ops,
2058 .workqueue = nfsiod_workqueue,
2059 .flags = RPC_TASK_ASYNC,
2061 int status = -ENOMEM;
2063 calldata = kzalloc(sizeof(*calldata), gfp_mask);
2064 if (calldata == NULL)
2066 calldata->inode = state->inode;
2067 calldata->state = state;
2068 calldata->arg.fh = NFS_FH(state->inode);
2069 calldata->arg.stateid = &state->open_stateid;
2070 /* Serialization for the sequence id */
2071 calldata->arg.seqid = nfs_alloc_seqid(&state->owner->so_seqid, gfp_mask);
2072 if (calldata->arg.seqid == NULL)
2073 goto out_free_calldata;
2074 calldata->arg.fmode = 0;
2075 calldata->arg.bitmask = server->cache_consistency_bitmask;
2076 calldata->res.fattr = &calldata->fattr;
2077 calldata->res.seqid = calldata->arg.seqid;
2078 calldata->res.server = server;
2079 calldata->roc = roc;
2080 nfs_sb_active(calldata->inode->i_sb);
2082 msg.rpc_argp = &calldata->arg;
2083 msg.rpc_resp = &calldata->res;
2084 task_setup_data.callback_data = calldata;
2085 task = rpc_run_task(&task_setup_data);
2087 return PTR_ERR(task);
2090 status = rpc_wait_for_completion_task(task);
2097 pnfs_roc_release(state->inode);
2098 nfs4_put_open_state(state);
2099 nfs4_put_state_owner(sp);
2103 static struct inode *
2104 nfs4_atomic_open(struct inode *dir, struct nfs_open_context *ctx, int open_flags, struct iattr *attr)
2106 struct nfs4_state *state;
2108 /* Protect against concurrent sillydeletes */
2109 state = nfs4_do_open(dir, ctx->dentry, ctx->mode, open_flags, attr, ctx->cred);
2111 return ERR_CAST(state);
2113 return igrab(state->inode);
2116 static void nfs4_close_context(struct nfs_open_context *ctx, int is_sync)
2118 if (ctx->state == NULL)
2121 nfs4_close_sync(ctx->state, ctx->mode);
2123 nfs4_close_state(ctx->state, ctx->mode);
2126 static int _nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *fhandle)
2128 struct nfs4_server_caps_arg args = {
2131 struct nfs4_server_caps_res res = {};
2132 struct rpc_message msg = {
2133 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SERVER_CAPS],
2139 status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0);
2141 memcpy(server->attr_bitmask, res.attr_bitmask, sizeof(server->attr_bitmask));
2142 server->caps &= ~(NFS_CAP_ACLS|NFS_CAP_HARDLINKS|
2143 NFS_CAP_SYMLINKS|NFS_CAP_FILEID|
2144 NFS_CAP_MODE|NFS_CAP_NLINK|NFS_CAP_OWNER|
2145 NFS_CAP_OWNER_GROUP|NFS_CAP_ATIME|
2146 NFS_CAP_CTIME|NFS_CAP_MTIME);
2147 if (res.attr_bitmask[0] & FATTR4_WORD0_ACL)
2148 server->caps |= NFS_CAP_ACLS;
2149 if (res.has_links != 0)
2150 server->caps |= NFS_CAP_HARDLINKS;
2151 if (res.has_symlinks != 0)
2152 server->caps |= NFS_CAP_SYMLINKS;
2153 if (res.attr_bitmask[0] & FATTR4_WORD0_FILEID)
2154 server->caps |= NFS_CAP_FILEID;
2155 if (res.attr_bitmask[1] & FATTR4_WORD1_MODE)
2156 server->caps |= NFS_CAP_MODE;
2157 if (res.attr_bitmask[1] & FATTR4_WORD1_NUMLINKS)
2158 server->caps |= NFS_CAP_NLINK;
2159 if (res.attr_bitmask[1] & FATTR4_WORD1_OWNER)
2160 server->caps |= NFS_CAP_OWNER;
2161 if (res.attr_bitmask[1] & FATTR4_WORD1_OWNER_GROUP)
2162 server->caps |= NFS_CAP_OWNER_GROUP;
2163 if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_ACCESS)
2164 server->caps |= NFS_CAP_ATIME;
2165 if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_METADATA)
2166 server->caps |= NFS_CAP_CTIME;
2167 if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_MODIFY)
2168 server->caps |= NFS_CAP_MTIME;
2170 memcpy(server->cache_consistency_bitmask, res.attr_bitmask, sizeof(server->cache_consistency_bitmask));
2171 server->cache_consistency_bitmask[0] &= FATTR4_WORD0_CHANGE|FATTR4_WORD0_SIZE;
2172 server->cache_consistency_bitmask[1] &= FATTR4_WORD1_TIME_METADATA|FATTR4_WORD1_TIME_MODIFY;
2173 server->acl_bitmask = res.acl_bitmask;
2179 int nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *fhandle)
2181 struct nfs4_exception exception = { };
2184 err = nfs4_handle_exception(server,
2185 _nfs4_server_capabilities(server, fhandle),
2187 } while (exception.retry);
2191 static int _nfs4_lookup_root(struct nfs_server *server, struct nfs_fh *fhandle,
2192 struct nfs_fsinfo *info)
2194 struct nfs4_lookup_root_arg args = {
2195 .bitmask = nfs4_fattr_bitmap,
2197 struct nfs4_lookup_res res = {
2199 .fattr = info->fattr,
2202 struct rpc_message msg = {
2203 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOOKUP_ROOT],
2208 nfs_fattr_init(info->fattr);
2209 return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0);
2212 static int nfs4_lookup_root(struct nfs_server *server, struct nfs_fh *fhandle,
2213 struct nfs_fsinfo *info)
2215 struct nfs4_exception exception = { };
2218 err = _nfs4_lookup_root(server, fhandle, info);
2221 case -NFS4ERR_WRONGSEC:
2224 err = nfs4_handle_exception(server, err, &exception);
2226 } while (exception.retry);
2230 static int nfs4_lookup_root_sec(struct nfs_server *server, struct nfs_fh *fhandle,
2231 struct nfs_fsinfo *info, rpc_authflavor_t flavor)
2233 struct rpc_auth *auth;
2236 auth = rpcauth_create(flavor, server->client);
2241 ret = nfs4_lookup_root(server, fhandle, info);
2246 static int nfs4_find_root_sec(struct nfs_server *server, struct nfs_fh *fhandle,
2247 struct nfs_fsinfo *info)
2249 int i, len, status = 0;
2250 rpc_authflavor_t flav_array[NFS_MAX_SECFLAVORS];
2252 len = gss_mech_list_pseudoflavors(&flav_array[0]);
2253 flav_array[len] = RPC_AUTH_NULL;
2256 for (i = 0; i < len; i++) {
2257 status = nfs4_lookup_root_sec(server, fhandle, info, flav_array[i]);
2258 if (status == -NFS4ERR_WRONGSEC || status == -EACCES)
2263 * -EACCESS could mean that the user doesn't have correct permissions
2264 * to access the mount. It could also mean that we tried to mount
2265 * with a gss auth flavor, but rpc.gssd isn't running. Either way,
2266 * existing mount programs don't handle -EACCES very well so it should
2267 * be mapped to -EPERM instead.
2269 if (status == -EACCES)
2275 * get the file handle for the "/" directory on the server
2277 static int nfs4_proc_get_root(struct nfs_server *server, struct nfs_fh *fhandle,
2278 struct nfs_fsinfo *info)
2280 int minor_version = server->nfs_client->cl_minorversion;
2281 int status = nfs4_lookup_root(server, fhandle, info);
2282 if ((status == -NFS4ERR_WRONGSEC) && !(server->flags & NFS_MOUNT_SECFLAVOUR))
2284 * A status of -NFS4ERR_WRONGSEC will be mapped to -EPERM
2285 * by nfs4_map_errors() as this function exits.
2287 status = nfs_v4_minor_ops[minor_version]->find_root_sec(server, fhandle, info);
2289 status = nfs4_server_capabilities(server, fhandle);
2291 status = nfs4_do_fsinfo(server, fhandle, info);
2292 return nfs4_map_errors(status);
2295 static void nfs_fixup_referral_attributes(struct nfs_fattr *fattr);
2297 * Get locations and (maybe) other attributes of a referral.
2298 * Note that we'll actually follow the referral later when
2299 * we detect fsid mismatch in inode revalidation
2301 static int nfs4_get_referral(struct inode *dir, const struct qstr *name,
2302 struct nfs_fattr *fattr, struct nfs_fh *fhandle)
2304 int status = -ENOMEM;
2305 struct page *page = NULL;
2306 struct nfs4_fs_locations *locations = NULL;
2308 page = alloc_page(GFP_KERNEL);
2311 locations = kmalloc(sizeof(struct nfs4_fs_locations), GFP_KERNEL);
2312 if (locations == NULL)
2315 status = nfs4_proc_fs_locations(dir, name, locations, page);
2318 /* Make sure server returned a different fsid for the referral */
2319 if (nfs_fsid_equal(&NFS_SERVER(dir)->fsid, &locations->fattr.fsid)) {
2320 dprintk("%s: server did not return a different fsid for"
2321 " a referral at %s\n", __func__, name->name);
2325 /* Fixup attributes for the nfs_lookup() call to nfs_fhget() */
2326 nfs_fixup_referral_attributes(&locations->fattr);
2328 /* replace the lookup nfs_fattr with the locations nfs_fattr */
2329 memcpy(fattr, &locations->fattr, sizeof(struct nfs_fattr));
2330 memset(fhandle, 0, sizeof(struct nfs_fh));
2338 static int _nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fattr *fattr)
2340 struct nfs4_getattr_arg args = {
2342 .bitmask = server->attr_bitmask,
2344 struct nfs4_getattr_res res = {
2348 struct rpc_message msg = {
2349 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETATTR],
2354 nfs_fattr_init(fattr);
2355 return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0);
2358 static int nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fattr *fattr)
2360 struct nfs4_exception exception = { };
2363 err = nfs4_handle_exception(server,
2364 _nfs4_proc_getattr(server, fhandle, fattr),
2366 } while (exception.retry);
2371 * The file is not closed if it is opened due to the a request to change
2372 * the size of the file. The open call will not be needed once the
2373 * VFS layer lookup-intents are implemented.
2375 * Close is called when the inode is destroyed.
2376 * If we haven't opened the file for O_WRONLY, we
2377 * need to in the size_change case to obtain a stateid.
2380 * Because OPEN is always done by name in nfsv4, it is
2381 * possible that we opened a different file by the same
2382 * name. We can recognize this race condition, but we
2383 * can't do anything about it besides returning an error.
2385 * This will be fixed with VFS changes (lookup-intent).
2388 nfs4_proc_setattr(struct dentry *dentry, struct nfs_fattr *fattr,
2389 struct iattr *sattr)
2391 struct inode *inode = dentry->d_inode;
2392 struct rpc_cred *cred = NULL;
2393 struct nfs4_state *state = NULL;
2396 if (pnfs_ld_layoutret_on_setattr(inode))
2397 pnfs_return_layout(inode);
2399 nfs_fattr_init(fattr);
2401 /* Search for an existing open(O_WRITE) file */
2402 if (sattr->ia_valid & ATTR_FILE) {
2403 struct nfs_open_context *ctx;
2405 ctx = nfs_file_open_context(sattr->ia_file);
2412 status = nfs4_do_setattr(inode, cred, fattr, sattr, state);
2414 nfs_setattr_update_inode(inode, sattr);
2418 static int _nfs4_proc_lookup(struct rpc_clnt *clnt, struct inode *dir,
2419 const struct qstr *name, struct nfs_fh *fhandle,
2420 struct nfs_fattr *fattr)
2422 struct nfs_server *server = NFS_SERVER(dir);
2424 struct nfs4_lookup_arg args = {
2425 .bitmask = server->attr_bitmask,
2426 .dir_fh = NFS_FH(dir),
2429 struct nfs4_lookup_res res = {
2434 struct rpc_message msg = {
2435 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOOKUP],
2440 nfs_fattr_init(fattr);
2442 dprintk("NFS call lookup %s\n", name->name);
2443 status = nfs4_call_sync(clnt, server, &msg, &args.seq_args, &res.seq_res, 0);
2444 dprintk("NFS reply lookup: %d\n", status);
2448 void nfs_fixup_secinfo_attributes(struct nfs_fattr *fattr, struct nfs_fh *fh)
2450 memset(fh, 0, sizeof(struct nfs_fh));
2451 fattr->fsid.major = 1;
2452 fattr->valid |= NFS_ATTR_FATTR_TYPE | NFS_ATTR_FATTR_MODE |
2453 NFS_ATTR_FATTR_NLINK | NFS_ATTR_FATTR_FSID | NFS_ATTR_FATTR_MOUNTPOINT;
2454 fattr->mode = S_IFDIR | S_IRUGO | S_IXUGO;
2458 static int nfs4_proc_lookup(struct rpc_clnt *clnt, struct inode *dir, struct qstr *name,
2459 struct nfs_fh *fhandle, struct nfs_fattr *fattr)
2461 struct nfs4_exception exception = { };
2466 status = _nfs4_proc_lookup(clnt, dir, name, fhandle, fattr);
2468 case -NFS4ERR_BADNAME:
2470 case -NFS4ERR_MOVED:
2471 return nfs4_get_referral(dir, name, fattr, fhandle);
2472 case -NFS4ERR_WRONGSEC:
2473 nfs_fixup_secinfo_attributes(fattr, fhandle);
2475 err = nfs4_handle_exception(NFS_SERVER(dir),
2476 status, &exception);
2477 } while (exception.retry);
2481 static int _nfs4_proc_access(struct inode *inode, struct nfs_access_entry *entry)
2483 struct nfs_server *server = NFS_SERVER(inode);
2484 struct nfs4_accessargs args = {
2485 .fh = NFS_FH(inode),
2486 .bitmask = server->attr_bitmask,
2488 struct nfs4_accessres res = {
2491 struct rpc_message msg = {
2492 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_ACCESS],
2495 .rpc_cred = entry->cred,
2497 int mode = entry->mask;
2501 * Determine which access bits we want to ask for...
2503 if (mode & MAY_READ)
2504 args.access |= NFS4_ACCESS_READ;
2505 if (S_ISDIR(inode->i_mode)) {
2506 if (mode & MAY_WRITE)
2507 args.access |= NFS4_ACCESS_MODIFY | NFS4_ACCESS_EXTEND | NFS4_ACCESS_DELETE;
2508 if (mode & MAY_EXEC)
2509 args.access |= NFS4_ACCESS_LOOKUP;
2511 if (mode & MAY_WRITE)
2512 args.access |= NFS4_ACCESS_MODIFY | NFS4_ACCESS_EXTEND;
2513 if (mode & MAY_EXEC)
2514 args.access |= NFS4_ACCESS_EXECUTE;
2517 res.fattr = nfs_alloc_fattr();
2518 if (res.fattr == NULL)
2521 status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0);
2524 if (res.access & NFS4_ACCESS_READ)
2525 entry->mask |= MAY_READ;
2526 if (res.access & (NFS4_ACCESS_MODIFY | NFS4_ACCESS_EXTEND | NFS4_ACCESS_DELETE))
2527 entry->mask |= MAY_WRITE;
2528 if (res.access & (NFS4_ACCESS_LOOKUP|NFS4_ACCESS_EXECUTE))
2529 entry->mask |= MAY_EXEC;
2530 nfs_refresh_inode(inode, res.fattr);
2532 nfs_free_fattr(res.fattr);
2536 static int nfs4_proc_access(struct inode *inode, struct nfs_access_entry *entry)
2538 struct nfs4_exception exception = { };
2541 err = nfs4_handle_exception(NFS_SERVER(inode),
2542 _nfs4_proc_access(inode, entry),
2544 } while (exception.retry);
2549 * TODO: For the time being, we don't try to get any attributes
2550 * along with any of the zero-copy operations READ, READDIR,
2553 * In the case of the first three, we want to put the GETATTR
2554 * after the read-type operation -- this is because it is hard
2555 * to predict the length of a GETATTR response in v4, and thus
2556 * align the READ data correctly. This means that the GETATTR
2557 * may end up partially falling into the page cache, and we should
2558 * shift it into the 'tail' of the xdr_buf before processing.
2559 * To do this efficiently, we need to know the total length
2560 * of data received, which doesn't seem to be available outside
2563 * In the case of WRITE, we also want to put the GETATTR after
2564 * the operation -- in this case because we want to make sure
2565 * we get the post-operation mtime and size. This means that
2566 * we can't use xdr_encode_pages() as written: we need a variant
2567 * of it which would leave room in the 'tail' iovec.
2569 * Both of these changes to the XDR layer would in fact be quite
2570 * minor, but I decided to leave them for a subsequent patch.
2572 static int _nfs4_proc_readlink(struct inode *inode, struct page *page,
2573 unsigned int pgbase, unsigned int pglen)
2575 struct nfs4_readlink args = {
2576 .fh = NFS_FH(inode),
2581 struct nfs4_readlink_res res;
2582 struct rpc_message msg = {
2583 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READLINK],
2588 return nfs4_call_sync(NFS_SERVER(inode)->client, NFS_SERVER(inode), &msg, &args.seq_args, &res.seq_res, 0);
2591 static int nfs4_proc_readlink(struct inode *inode, struct page *page,
2592 unsigned int pgbase, unsigned int pglen)
2594 struct nfs4_exception exception = { };
2597 err = nfs4_handle_exception(NFS_SERVER(inode),
2598 _nfs4_proc_readlink(inode, page, pgbase, pglen),
2600 } while (exception.retry);
2606 * We will need to arrange for the VFS layer to provide an atomic open.
2607 * Until then, this create/open method is prone to inefficiency and race
2608 * conditions due to the lookup, create, and open VFS calls from sys_open()
2609 * placed on the wire.
2611 * Given the above sorry state of affairs, I'm simply sending an OPEN.
2612 * The file will be opened again in the subsequent VFS open call
2613 * (nfs4_proc_file_open).
2615 * The open for read will just hang around to be used by any process that
2616 * opens the file O_RDONLY. This will all be resolved with the VFS changes.
2620 nfs4_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr,
2621 int flags, struct nfs_open_context *ctx)
2623 struct dentry *de = dentry;
2624 struct nfs4_state *state;
2625 struct rpc_cred *cred = NULL;
2634 sattr->ia_mode &= ~current_umask();
2635 state = nfs4_do_open(dir, de, fmode, flags, sattr, cred);
2637 if (IS_ERR(state)) {
2638 status = PTR_ERR(state);
2641 d_add(dentry, igrab(state->inode));
2642 nfs_set_verifier(dentry, nfs_save_change_attribute(dir));
2646 nfs4_close_sync(state, fmode);
2651 static int _nfs4_proc_remove(struct inode *dir, struct qstr *name)
2653 struct nfs_server *server = NFS_SERVER(dir);
2654 struct nfs_removeargs args = {
2656 .name.len = name->len,
2657 .name.name = name->name,
2658 .bitmask = server->attr_bitmask,
2660 struct nfs_removeres res = {
2663 struct rpc_message msg = {
2664 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_REMOVE],
2668 int status = -ENOMEM;
2670 res.dir_attr = nfs_alloc_fattr();
2671 if (res.dir_attr == NULL)
2674 status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 1);
2676 update_changeattr(dir, &res.cinfo);
2677 nfs_post_op_update_inode(dir, res.dir_attr);
2679 nfs_free_fattr(res.dir_attr);
2684 static int nfs4_proc_remove(struct inode *dir, struct qstr *name)
2686 struct nfs4_exception exception = { };
2689 err = nfs4_handle_exception(NFS_SERVER(dir),
2690 _nfs4_proc_remove(dir, name),
2692 } while (exception.retry);
2696 static void nfs4_proc_unlink_setup(struct rpc_message *msg, struct inode *dir)
2698 struct nfs_server *server = NFS_SERVER(dir);
2699 struct nfs_removeargs *args = msg->rpc_argp;
2700 struct nfs_removeres *res = msg->rpc_resp;
2702 args->bitmask = server->cache_consistency_bitmask;
2703 res->server = server;
2704 res->seq_res.sr_slot = NULL;
2705 msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_REMOVE];
2708 static int nfs4_proc_unlink_done(struct rpc_task *task, struct inode *dir)
2710 struct nfs_removeres *res = task->tk_msg.rpc_resp;
2712 if (!nfs4_sequence_done(task, &res->seq_res))
2714 if (nfs4_async_handle_error(task, res->server, NULL) == -EAGAIN)
2716 update_changeattr(dir, &res->cinfo);
2717 nfs_post_op_update_inode(dir, res->dir_attr);
2721 static void nfs4_proc_rename_setup(struct rpc_message *msg, struct inode *dir)
2723 struct nfs_server *server = NFS_SERVER(dir);
2724 struct nfs_renameargs *arg = msg->rpc_argp;
2725 struct nfs_renameres *res = msg->rpc_resp;
2727 msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENAME];
2728 arg->bitmask = server->attr_bitmask;
2729 res->server = server;
2732 static int nfs4_proc_rename_done(struct rpc_task *task, struct inode *old_dir,
2733 struct inode *new_dir)
2735 struct nfs_renameres *res = task->tk_msg.rpc_resp;
2737 if (!nfs4_sequence_done(task, &res->seq_res))
2739 if (nfs4_async_handle_error(task, res->server, NULL) == -EAGAIN)
2742 update_changeattr(old_dir, &res->old_cinfo);
2743 nfs_post_op_update_inode(old_dir, res->old_fattr);
2744 update_changeattr(new_dir, &res->new_cinfo);
2745 nfs_post_op_update_inode(new_dir, res->new_fattr);
2749 static int _nfs4_proc_rename(struct inode *old_dir, struct qstr *old_name,
2750 struct inode *new_dir, struct qstr *new_name)
2752 struct nfs_server *server = NFS_SERVER(old_dir);
2753 struct nfs_renameargs arg = {
2754 .old_dir = NFS_FH(old_dir),
2755 .new_dir = NFS_FH(new_dir),
2756 .old_name = old_name,
2757 .new_name = new_name,
2758 .bitmask = server->attr_bitmask,
2760 struct nfs_renameres res = {
2763 struct rpc_message msg = {
2764 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENAME],
2768 int status = -ENOMEM;
2770 res.old_fattr = nfs_alloc_fattr();
2771 res.new_fattr = nfs_alloc_fattr();
2772 if (res.old_fattr == NULL || res.new_fattr == NULL)
2775 status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1);
2777 update_changeattr(old_dir, &res.old_cinfo);
2778 nfs_post_op_update_inode(old_dir, res.old_fattr);
2779 update_changeattr(new_dir, &res.new_cinfo);
2780 nfs_post_op_update_inode(new_dir, res.new_fattr);
2783 nfs_free_fattr(res.new_fattr);
2784 nfs_free_fattr(res.old_fattr);
2788 static int nfs4_proc_rename(struct inode *old_dir, struct qstr *old_name,
2789 struct inode *new_dir, struct qstr *new_name)
2791 struct nfs4_exception exception = { };
2794 err = nfs4_handle_exception(NFS_SERVER(old_dir),
2795 _nfs4_proc_rename(old_dir, old_name,
2798 } while (exception.retry);
2802 static int _nfs4_proc_link(struct inode *inode, struct inode *dir, struct qstr *name)
2804 struct nfs_server *server = NFS_SERVER(inode);
2805 struct nfs4_link_arg arg = {
2806 .fh = NFS_FH(inode),
2807 .dir_fh = NFS_FH(dir),
2809 .bitmask = server->attr_bitmask,
2811 struct nfs4_link_res res = {
2814 struct rpc_message msg = {
2815 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LINK],
2819 int status = -ENOMEM;
2821 res.fattr = nfs_alloc_fattr();
2822 res.dir_attr = nfs_alloc_fattr();
2823 if (res.fattr == NULL || res.dir_attr == NULL)
2826 status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1);
2828 update_changeattr(dir, &res.cinfo);
2829 nfs_post_op_update_inode(dir, res.dir_attr);
2830 nfs_post_op_update_inode(inode, res.fattr);
2833 nfs_free_fattr(res.dir_attr);
2834 nfs_free_fattr(res.fattr);
2838 static int nfs4_proc_link(struct inode *inode, struct inode *dir, struct qstr *name)
2840 struct nfs4_exception exception = { };
2843 err = nfs4_handle_exception(NFS_SERVER(inode),
2844 _nfs4_proc_link(inode, dir, name),
2846 } while (exception.retry);
2850 struct nfs4_createdata {
2851 struct rpc_message msg;
2852 struct nfs4_create_arg arg;
2853 struct nfs4_create_res res;
2855 struct nfs_fattr fattr;
2856 struct nfs_fattr dir_fattr;
2859 static struct nfs4_createdata *nfs4_alloc_createdata(struct inode *dir,
2860 struct qstr *name, struct iattr *sattr, u32 ftype)
2862 struct nfs4_createdata *data;
2864 data = kzalloc(sizeof(*data), GFP_KERNEL);
2866 struct nfs_server *server = NFS_SERVER(dir);
2868 data->msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CREATE];
2869 data->msg.rpc_argp = &data->arg;
2870 data->msg.rpc_resp = &data->res;
2871 data->arg.dir_fh = NFS_FH(dir);
2872 data->arg.server = server;
2873 data->arg.name = name;
2874 data->arg.attrs = sattr;
2875 data->arg.ftype = ftype;
2876 data->arg.bitmask = server->attr_bitmask;
2877 data->res.server = server;
2878 data->res.fh = &data->fh;
2879 data->res.fattr = &data->fattr;
2880 data->res.dir_fattr = &data->dir_fattr;
2881 nfs_fattr_init(data->res.fattr);
2882 nfs_fattr_init(data->res.dir_fattr);
2887 static int nfs4_do_create(struct inode *dir, struct dentry *dentry, struct nfs4_createdata *data)
2889 int status = nfs4_call_sync(NFS_SERVER(dir)->client, NFS_SERVER(dir), &data->msg,
2890 &data->arg.seq_args, &data->res.seq_res, 1);
2892 update_changeattr(dir, &data->res.dir_cinfo);
2893 nfs_post_op_update_inode(dir, data->res.dir_fattr);
2894 status = nfs_instantiate(dentry, data->res.fh, data->res.fattr);
2899 static void nfs4_free_createdata(struct nfs4_createdata *data)
2904 static int _nfs4_proc_symlink(struct inode *dir, struct dentry *dentry,
2905 struct page *page, unsigned int len, struct iattr *sattr)
2907 struct nfs4_createdata *data;
2908 int status = -ENAMETOOLONG;
2910 if (len > NFS4_MAXPATHLEN)
2914 data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4LNK);
2918 data->msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SYMLINK];
2919 data->arg.u.symlink.pages = &page;
2920 data->arg.u.symlink.len = len;
2922 status = nfs4_do_create(dir, dentry, data);
2924 nfs4_free_createdata(data);
2929 static int nfs4_proc_symlink(struct inode *dir, struct dentry *dentry,
2930 struct page *page, unsigned int len, struct iattr *sattr)
2932 struct nfs4_exception exception = { };
2935 err = nfs4_handle_exception(NFS_SERVER(dir),
2936 _nfs4_proc_symlink(dir, dentry, page,
2939 } while (exception.retry);
2943 static int _nfs4_proc_mkdir(struct inode *dir, struct dentry *dentry,
2944 struct iattr *sattr)
2946 struct nfs4_createdata *data;
2947 int status = -ENOMEM;
2949 data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4DIR);
2953 status = nfs4_do_create(dir, dentry, data);
2955 nfs4_free_createdata(data);
2960 static int nfs4_proc_mkdir(struct inode *dir, struct dentry *dentry,
2961 struct iattr *sattr)
2963 struct nfs4_exception exception = { };
2966 sattr->ia_mode &= ~current_umask();
2968 err = nfs4_handle_exception(NFS_SERVER(dir),
2969 _nfs4_proc_mkdir(dir, dentry, sattr),
2971 } while (exception.retry);
2975 static int _nfs4_proc_readdir(struct dentry *dentry, struct rpc_cred *cred,
2976 u64 cookie, struct page **pages, unsigned int count, int plus)
2978 struct inode *dir = dentry->d_inode;
2979 struct nfs4_readdir_arg args = {
2984 .bitmask = NFS_SERVER(dentry->d_inode)->attr_bitmask,
2987 struct nfs4_readdir_res res;
2988 struct rpc_message msg = {
2989 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READDIR],
2996 dprintk("%s: dentry = %s/%s, cookie = %Lu\n", __func__,
2997 dentry->d_parent->d_name.name,
2998 dentry->d_name.name,
2999 (unsigned long long)cookie);
3000 nfs4_setup_readdir(cookie, NFS_COOKIEVERF(dir), dentry, &args);
3001 res.pgbase = args.pgbase;
3002 status = nfs4_call_sync(NFS_SERVER(dir)->client, NFS_SERVER(dir), &msg, &args.seq_args, &res.seq_res, 0);
3004 memcpy(NFS_COOKIEVERF(dir), res.verifier.data, NFS4_VERIFIER_SIZE);
3005 status += args.pgbase;
3008 nfs_invalidate_atime(dir);
3010 dprintk("%s: returns %d\n", __func__, status);
3014 static int nfs4_proc_readdir(struct dentry *dentry, struct rpc_cred *cred,
3015 u64 cookie, struct page **pages, unsigned int count, int plus)
3017 struct nfs4_exception exception = { };
3020 err = nfs4_handle_exception(NFS_SERVER(dentry->d_inode),
3021 _nfs4_proc_readdir(dentry, cred, cookie,
3022 pages, count, plus),
3024 } while (exception.retry);
3028 static int _nfs4_proc_mknod(struct inode *dir, struct dentry *dentry,
3029 struct iattr *sattr, dev_t rdev)
3031 struct nfs4_createdata *data;
3032 int mode = sattr->ia_mode;
3033 int status = -ENOMEM;
3035 BUG_ON(!(sattr->ia_valid & ATTR_MODE));
3036 BUG_ON(!S_ISFIFO(mode) && !S_ISBLK(mode) && !S_ISCHR(mode) && !S_ISSOCK(mode));
3038 data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4SOCK);
3043 data->arg.ftype = NF4FIFO;
3044 else if (S_ISBLK(mode)) {
3045 data->arg.ftype = NF4BLK;
3046 data->arg.u.device.specdata1 = MAJOR(rdev);
3047 data->arg.u.device.specdata2 = MINOR(rdev);
3049 else if (S_ISCHR(mode)) {
3050 data->arg.ftype = NF4CHR;
3051 data->arg.u.device.specdata1 = MAJOR(rdev);
3052 data->arg.u.device.specdata2 = MINOR(rdev);
3055 status = nfs4_do_create(dir, dentry, data);
3057 nfs4_free_createdata(data);
3062 static int nfs4_proc_mknod(struct inode *dir, struct dentry *dentry,
3063 struct iattr *sattr, dev_t rdev)
3065 struct nfs4_exception exception = { };
3068 sattr->ia_mode &= ~current_umask();
3070 err = nfs4_handle_exception(NFS_SERVER(dir),
3071 _nfs4_proc_mknod(dir, dentry, sattr, rdev),
3073 } while (exception.retry);
3077 static int _nfs4_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle,
3078 struct nfs_fsstat *fsstat)
3080 struct nfs4_statfs_arg args = {
3082 .bitmask = server->attr_bitmask,
3084 struct nfs4_statfs_res res = {
3087 struct rpc_message msg = {
3088 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_STATFS],
3093 nfs_fattr_init(fsstat->fattr);
3094 return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0);
3097 static int nfs4_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsstat *fsstat)
3099 struct nfs4_exception exception = { };
3102 err = nfs4_handle_exception(server,
3103 _nfs4_proc_statfs(server, fhandle, fsstat),
3105 } while (exception.retry);
3109 static int _nfs4_do_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle,
3110 struct nfs_fsinfo *fsinfo)
3112 struct nfs4_fsinfo_arg args = {
3114 .bitmask = server->attr_bitmask,
3116 struct nfs4_fsinfo_res res = {
3119 struct rpc_message msg = {
3120 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FSINFO],
3125 return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0);
3128 static int nfs4_do_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsinfo *fsinfo)
3130 struct nfs4_exception exception = { };
3134 err = nfs4_handle_exception(server,
3135 _nfs4_do_fsinfo(server, fhandle, fsinfo),
3137 } while (exception.retry);
3141 static int nfs4_proc_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsinfo *fsinfo)
3143 nfs_fattr_init(fsinfo->fattr);
3144 return nfs4_do_fsinfo(server, fhandle, fsinfo);
3147 static int _nfs4_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle,
3148 struct nfs_pathconf *pathconf)
3150 struct nfs4_pathconf_arg args = {
3152 .bitmask = server->attr_bitmask,
3154 struct nfs4_pathconf_res res = {
3155 .pathconf = pathconf,
3157 struct rpc_message msg = {
3158 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_PATHCONF],
3163 /* None of the pathconf attributes are mandatory to implement */
3164 if ((args.bitmask[0] & nfs4_pathconf_bitmap[0]) == 0) {
3165 memset(pathconf, 0, sizeof(*pathconf));
3169 nfs_fattr_init(pathconf->fattr);
3170 return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0);
3173 static int nfs4_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle,
3174 struct nfs_pathconf *pathconf)
3176 struct nfs4_exception exception = { };
3180 err = nfs4_handle_exception(server,
3181 _nfs4_proc_pathconf(server, fhandle, pathconf),
3183 } while (exception.retry);
3187 void __nfs4_read_done_cb(struct nfs_read_data *data)
3189 nfs_invalidate_atime(data->inode);
3192 static int nfs4_read_done_cb(struct rpc_task *task, struct nfs_read_data *data)
3194 struct nfs_server *server = NFS_SERVER(data->inode);
3196 if (nfs4_async_handle_error(task, server, data->args.context->state) == -EAGAIN) {
3197 rpc_restart_call_prepare(task);
3201 __nfs4_read_done_cb(data);
3202 if (task->tk_status > 0)
3203 renew_lease(server, data->timestamp);
3207 static int nfs4_read_done(struct rpc_task *task, struct nfs_read_data *data)
3210 dprintk("--> %s\n", __func__);
3212 if (!nfs4_sequence_done(task, &data->res.seq_res))
3215 return data->read_done_cb ? data->read_done_cb(task, data) :
3216 nfs4_read_done_cb(task, data);
3219 static void nfs4_proc_read_setup(struct nfs_read_data *data, struct rpc_message *msg)
3221 data->timestamp = jiffies;
3222 data->read_done_cb = nfs4_read_done_cb;
3223 msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READ];
3226 /* Reset the the nfs_read_data to send the read to the MDS. */
3227 void nfs4_reset_read(struct rpc_task *task, struct nfs_read_data *data)
3229 dprintk("%s Reset task for i/o through\n", __func__);
3230 put_lseg(data->lseg);
3232 /* offsets will differ in the dense stripe case */
3233 data->args.offset = data->mds_offset;
3234 data->ds_clp = NULL;
3235 data->args.fh = NFS_FH(data->inode);
3236 data->read_done_cb = nfs4_read_done_cb;
3237 task->tk_ops = data->mds_ops;
3238 rpc_task_reset_client(task, NFS_CLIENT(data->inode));
3240 EXPORT_SYMBOL_GPL(nfs4_reset_read);
3242 static int nfs4_write_done_cb(struct rpc_task *task, struct nfs_write_data *data)
3244 struct inode *inode = data->inode;
3246 if (nfs4_async_handle_error(task, NFS_SERVER(inode), data->args.context->state) == -EAGAIN) {
3247 rpc_restart_call_prepare(task);
3250 if (task->tk_status >= 0) {
3251 renew_lease(NFS_SERVER(inode), data->timestamp);
3252 nfs_post_op_update_inode_force_wcc(inode, data->res.fattr);
3257 static int nfs4_write_done(struct rpc_task *task, struct nfs_write_data *data)
3259 if (!nfs4_sequence_done(task, &data->res.seq_res))
3261 return data->write_done_cb ? data->write_done_cb(task, data) :
3262 nfs4_write_done_cb(task, data);
3265 /* Reset the the nfs_write_data to send the write to the MDS. */
3266 void nfs4_reset_write(struct rpc_task *task, struct nfs_write_data *data)
3268 dprintk("%s Reset task for i/o through\n", __func__);
3269 put_lseg(data->lseg);
3271 data->ds_clp = NULL;
3272 data->write_done_cb = nfs4_write_done_cb;
3273 data->args.fh = NFS_FH(data->inode);
3274 data->args.bitmask = data->res.server->cache_consistency_bitmask;
3275 data->args.offset = data->mds_offset;
3276 data->res.fattr = &data->fattr;
3277 task->tk_ops = data->mds_ops;
3278 rpc_task_reset_client(task, NFS_CLIENT(data->inode));
3280 EXPORT_SYMBOL_GPL(nfs4_reset_write);
3282 static void nfs4_proc_write_setup(struct nfs_write_data *data, struct rpc_message *msg)
3284 struct nfs_server *server = NFS_SERVER(data->inode);
3287 data->args.bitmask = NULL;
3288 data->res.fattr = NULL;
3290 data->args.bitmask = server->cache_consistency_bitmask;
3291 if (!data->write_done_cb)
3292 data->write_done_cb = nfs4_write_done_cb;
3293 data->res.server = server;
3294 data->timestamp = jiffies;
3296 msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_WRITE];
3299 static int nfs4_commit_done_cb(struct rpc_task *task, struct nfs_write_data *data)
3301 struct inode *inode = data->inode;
3303 if (nfs4_async_handle_error(task, NFS_SERVER(inode), NULL) == -EAGAIN) {
3304 rpc_restart_call_prepare(task);
3307 nfs_refresh_inode(inode, data->res.fattr);
3311 static int nfs4_commit_done(struct rpc_task *task, struct nfs_write_data *data)
3313 if (!nfs4_sequence_done(task, &data->res.seq_res))
3315 return data->write_done_cb(task, data);
3318 static void nfs4_proc_commit_setup(struct nfs_write_data *data, struct rpc_message *msg)
3320 struct nfs_server *server = NFS_SERVER(data->inode);
3323 data->args.bitmask = NULL;
3324 data->res.fattr = NULL;
3326 data->args.bitmask = server->cache_consistency_bitmask;
3327 if (!data->write_done_cb)
3328 data->write_done_cb = nfs4_commit_done_cb;
3329 data->res.server = server;
3330 msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_COMMIT];
3333 struct nfs4_renewdata {
3334 struct nfs_client *client;
3335 unsigned long timestamp;
3339 * nfs4_proc_async_renew(): This is not one of the nfs_rpc_ops; it is a special
3340 * standalone procedure for queueing an asynchronous RENEW.
3342 static void nfs4_renew_release(void *calldata)
3344 struct nfs4_renewdata *data = calldata;
3345 struct nfs_client *clp = data->client;
3347 if (atomic_read(&clp->cl_count) > 1)
3348 nfs4_schedule_state_renewal(clp);
3349 nfs_put_client(clp);
3353 static void nfs4_renew_done(struct rpc_task *task, void *calldata)
3355 struct nfs4_renewdata *data = calldata;
3356 struct nfs_client *clp = data->client;
3357 unsigned long timestamp = data->timestamp;
3359 if (task->tk_status < 0) {
3360 /* Unless we're shutting down, schedule state recovery! */
3361 if (test_bit(NFS_CS_RENEWD, &clp->cl_res_state) == 0)
3363 if (task->tk_status != NFS4ERR_CB_PATH_DOWN) {
3364 nfs4_schedule_lease_recovery(clp);
3367 nfs4_schedule_path_down_recovery(clp);
3369 do_renew_lease(clp, timestamp);
3372 static const struct rpc_call_ops nfs4_renew_ops = {
3373 .rpc_call_done = nfs4_renew_done,
3374 .rpc_release = nfs4_renew_release,
3377 static int nfs4_proc_async_renew(struct nfs_client *clp, struct rpc_cred *cred, unsigned renew_flags)
3379 struct rpc_message msg = {
3380 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENEW],
3384 struct nfs4_renewdata *data;
3386 if (renew_flags == 0)
3388 if (!atomic_inc_not_zero(&clp->cl_count))
3390 data = kmalloc(sizeof(*data), GFP_NOFS);
3394 data->timestamp = jiffies;
3395 return rpc_call_async(clp->cl_rpcclient, &msg, RPC_TASK_SOFT,
3396 &nfs4_renew_ops, data);
3399 static int nfs4_proc_renew(struct nfs_client *clp, struct rpc_cred *cred)
3401 struct rpc_message msg = {
3402 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENEW],
3406 unsigned long now = jiffies;
3409 status = rpc_call_sync(clp->cl_rpcclient, &msg, 0);
3412 do_renew_lease(clp, now);
3416 static inline int nfs4_server_supports_acls(struct nfs_server *server)
3418 return (server->caps & NFS_CAP_ACLS)
3419 && (server->acl_bitmask & ACL4_SUPPORT_ALLOW_ACL)
3420 && (server->acl_bitmask & ACL4_SUPPORT_DENY_ACL);
3423 /* Assuming that XATTR_SIZE_MAX is a multiple of PAGE_CACHE_SIZE, and that
3424 * it's OK to put sizeof(void) * (XATTR_SIZE_MAX/PAGE_CACHE_SIZE) bytes on
3427 #define NFS4ACL_MAXPAGES (XATTR_SIZE_MAX >> PAGE_CACHE_SHIFT)
3429 static int buf_to_pages_noslab(const void *buf, size_t buflen,
3430 struct page **pages, unsigned int *pgbase)
3432 struct page *newpage, **spages;
3438 len = min_t(size_t, PAGE_CACHE_SIZE, buflen);
3439 newpage = alloc_page(GFP_KERNEL);
3441 if (newpage == NULL)
3443 memcpy(page_address(newpage), buf, len);
3448 } while (buflen != 0);
3454 __free_page(spages[rc-1]);
3458 struct nfs4_cached_acl {
3464 static void nfs4_set_cached_acl(struct inode *inode, struct nfs4_cached_acl *acl)
3466 struct nfs_inode *nfsi = NFS_I(inode);
3468 spin_lock(&inode->i_lock);
3469 kfree(nfsi->nfs4_acl);
3470 nfsi->nfs4_acl = acl;
3471 spin_unlock(&inode->i_lock);
3474 static void nfs4_zap_acl_attr(struct inode *inode)
3476 nfs4_set_cached_acl(inode, NULL);
3479 static inline ssize_t nfs4_read_cached_acl(struct inode *inode, char *buf, size_t buflen)
3481 struct nfs_inode *nfsi = NFS_I(inode);
3482 struct nfs4_cached_acl *acl;
3485 spin_lock(&inode->i_lock);
3486 acl = nfsi->nfs4_acl;
3489 if (buf == NULL) /* user is just asking for length */
3491 if (acl->cached == 0)
3493 ret = -ERANGE; /* see getxattr(2) man page */
3494 if (acl->len > buflen)
3496 memcpy(buf, acl->data, acl->len);
3500 spin_unlock(&inode->i_lock);
3504 static void nfs4_write_cached_acl(struct inode *inode, const char *buf, size_t acl_len)
3506 struct nfs4_cached_acl *acl;
3508 if (buf && acl_len <= PAGE_SIZE) {
3509 acl = kmalloc(sizeof(*acl) + acl_len, GFP_KERNEL);
3513 memcpy(acl->data, buf, acl_len);
3515 acl = kmalloc(sizeof(*acl), GFP_KERNEL);
3522 nfs4_set_cached_acl(inode, acl);
3526 * The getxattr API returns the required buffer length when called with a
3527 * NULL buf. The NFSv4 acl tool then calls getxattr again after allocating
3528 * the required buf. On a NULL buf, we send a page of data to the server
3529 * guessing that the ACL request can be serviced by a page. If so, we cache
3530 * up to the page of ACL data, and the 2nd call to getxattr is serviced by
3531 * the cache. If not so, we throw away the page, and cache the required
3532 * length. The next getxattr call will then produce another round trip to
3533 * the server, this time with the input buf of the required size.
3535 static ssize_t __nfs4_get_acl_uncached(struct inode *inode, void *buf, size_t buflen)
3537 struct page *pages[NFS4ACL_MAXPAGES] = {NULL, };
3538 struct nfs_getaclargs args = {
3539 .fh = NFS_FH(inode),
3543 struct nfs_getaclres res = {
3547 struct rpc_message msg = {
3548 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETACL],
3552 int ret = -ENOMEM, npages, i, acl_len = 0;
3554 npages = (buflen + PAGE_SIZE - 1) >> PAGE_SHIFT;
3555 /* As long as we're doing a round trip to the server anyway,
3556 * let's be prepared for a page of acl data. */
3560 for (i = 0; i < npages; i++) {
3561 pages[i] = alloc_page(GFP_KERNEL);
3566 /* for decoding across pages */
3567 args.acl_scratch = alloc_page(GFP_KERNEL);
3568 if (!args.acl_scratch)
3571 args.acl_len = npages * PAGE_SIZE;
3572 args.acl_pgbase = 0;
3573 /* Let decode_getfacl know not to fail if the ACL data is larger than
3574 * the page we send as a guess */
3576 res.acl_flags |= NFS4_ACL_LEN_REQUEST;
3577 resp_buf = page_address(pages[0]);
3579 dprintk("%s buf %p buflen %ld npages %d args.acl_len %ld\n",
3580 __func__, buf, buflen, npages, args.acl_len);
3581 ret = nfs4_call_sync(NFS_SERVER(inode)->client, NFS_SERVER(inode),
3582 &msg, &args.seq_args, &res.seq_res, 0);
3586 acl_len = res.acl_len - res.acl_data_offset;
3587 if (acl_len > args.acl_len)
3588 nfs4_write_cached_acl(inode, NULL, acl_len);
3590 nfs4_write_cached_acl(inode, resp_buf + res.acl_data_offset,
3594 if (acl_len > buflen)
3596 _copy_from_pages(buf, pages, res.acl_data_offset,
3601 for (i = 0; i < npages; i++)
3603 __free_page(pages[i]);
3604 if (args.acl_scratch)
3605 __free_page(args.acl_scratch);
3609 static ssize_t nfs4_get_acl_uncached(struct inode *inode, void *buf, size_t buflen)
3611 struct nfs4_exception exception = { };
3614 ret = __nfs4_get_acl_uncached(inode, buf, buflen);
3617 ret = nfs4_handle_exception(NFS_SERVER(inode), ret, &exception);
3618 } while (exception.retry);
3622 static ssize_t nfs4_proc_get_acl(struct inode *inode, void *buf, size_t buflen)
3624 struct nfs_server *server = NFS_SERVER(inode);
3627 if (!nfs4_server_supports_acls(server))
3629 ret = nfs_revalidate_inode(server, inode);
3632 if (NFS_I(inode)->cache_validity & NFS_INO_INVALID_ACL)
3633 nfs_zap_acl_cache(inode);
3634 ret = nfs4_read_cached_acl(inode, buf, buflen);
3636 /* -ENOENT is returned if there is no ACL or if there is an ACL
3637 * but no cached acl data, just the acl length */
3639 return nfs4_get_acl_uncached(inode, buf, buflen);
3642 static int __nfs4_proc_set_acl(struct inode *inode, const void *buf, size_t buflen)
3644 struct nfs_server *server = NFS_SERVER(inode);
3645 struct page *pages[NFS4ACL_MAXPAGES];
3646 struct nfs_setaclargs arg = {
3647 .fh = NFS_FH(inode),
3651 struct nfs_setaclres res;
3652 struct rpc_message msg = {
3653 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETACL],
3659 if (!nfs4_server_supports_acls(server))
3661 i = buf_to_pages_noslab(buf, buflen, arg.acl_pages, &arg.acl_pgbase);
3664 nfs_inode_return_delegation(inode);
3665 ret = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1);
3668 * Free each page after tx, so the only ref left is
3669 * held by the network stack
3672 put_page(pages[i-1]);
3675 * Acl update can result in inode attribute update.
3676 * so mark the attribute cache invalid.
3678 spin_lock(&inode->i_lock);
3679 NFS_I(inode)->cache_validity |= NFS_INO_INVALID_ATTR;
3680 spin_unlock(&inode->i_lock);
3681 nfs_access_zap_cache(inode);
3682 nfs_zap_acl_cache(inode);
3686 static int nfs4_proc_set_acl(struct inode *inode, const void *buf, size_t buflen)
3688 struct nfs4_exception exception = { };
3691 err = nfs4_handle_exception(NFS_SERVER(inode),
3692 __nfs4_proc_set_acl(inode, buf, buflen),
3694 } while (exception.retry);
3699 nfs4_async_handle_error(struct rpc_task *task, const struct nfs_server *server, struct nfs4_state *state)
3701 struct nfs_client *clp = server->nfs_client;
3703 if (task->tk_status >= 0)
3705 switch(task->tk_status) {
3706 case -NFS4ERR_ADMIN_REVOKED:
3707 case -NFS4ERR_BAD_STATEID:
3708 case -NFS4ERR_OPENMODE:
3711 nfs4_schedule_stateid_recovery(server, state);
3712 goto wait_on_recovery;
3713 case -NFS4ERR_EXPIRED:
3715 nfs4_schedule_stateid_recovery(server, state);
3716 case -NFS4ERR_STALE_STATEID:
3717 case -NFS4ERR_STALE_CLIENTID:
3718 nfs4_schedule_lease_recovery(clp);
3719 goto wait_on_recovery;
3720 #if defined(CONFIG_NFS_V4_1)
3721 case -NFS4ERR_BADSESSION:
3722 case -NFS4ERR_BADSLOT:
3723 case -NFS4ERR_BAD_HIGH_SLOT:
3724 case -NFS4ERR_DEADSESSION:
3725 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION:
3726 case -NFS4ERR_SEQ_FALSE_RETRY:
3727 case -NFS4ERR_SEQ_MISORDERED:
3728 dprintk("%s ERROR %d, Reset session\n", __func__,
3730 nfs4_schedule_session_recovery(clp->cl_session);
3731 task->tk_status = 0;
3733 #endif /* CONFIG_NFS_V4_1 */
3734 case -NFS4ERR_DELAY:
3735 nfs_inc_server_stats(server, NFSIOS_DELAY);
3736 case -NFS4ERR_GRACE:
3738 rpc_delay(task, NFS4_POLL_RETRY_MAX);
3739 task->tk_status = 0;
3741 case -NFS4ERR_RETRY_UNCACHED_REP:
3742 case -NFS4ERR_OLD_STATEID:
3743 task->tk_status = 0;
3746 task->tk_status = nfs4_map_errors(task->tk_status);
3749 rpc_sleep_on(&clp->cl_rpcwaitq, task, NULL);
3750 if (test_bit(NFS4CLNT_MANAGER_RUNNING, &clp->cl_state) == 0)
3751 rpc_wake_up_queued_task(&clp->cl_rpcwaitq, task);
3752 task->tk_status = 0;
3756 int nfs4_proc_setclientid(struct nfs_client *clp, u32 program,
3757 unsigned short port, struct rpc_cred *cred,
3758 struct nfs4_setclientid_res *res)
3760 nfs4_verifier sc_verifier;
3761 struct nfs4_setclientid setclientid = {
3762 .sc_verifier = &sc_verifier,
3764 .sc_cb_ident = clp->cl_cb_ident,
3766 struct rpc_message msg = {
3767 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETCLIENTID],
3768 .rpc_argp = &setclientid,
3776 p = (__be32*)sc_verifier.data;
3777 *p++ = htonl((u32)clp->cl_boot_time.tv_sec);
3778 *p = htonl((u32)clp->cl_boot_time.tv_nsec);
3781 setclientid.sc_name_len = scnprintf(setclientid.sc_name,
3782 sizeof(setclientid.sc_name), "%s/%s %s %s %u",
3784 rpc_peeraddr2str(clp->cl_rpcclient,
3786 rpc_peeraddr2str(clp->cl_rpcclient,
3788 clp->cl_rpcclient->cl_auth->au_ops->au_name,
3789 clp->cl_id_uniquifier);
3790 setclientid.sc_netid_len = scnprintf(setclientid.sc_netid,
3791 sizeof(setclientid.sc_netid),
3792 rpc_peeraddr2str(clp->cl_rpcclient,
3793 RPC_DISPLAY_NETID));
3794 setclientid.sc_uaddr_len = scnprintf(setclientid.sc_uaddr,
3795 sizeof(setclientid.sc_uaddr), "%s.%u.%u",
3796 clp->cl_ipaddr, port >> 8, port & 255);
3798 status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT);
3799 if (status != -NFS4ERR_CLID_INUSE)
3802 ++clp->cl_id_uniquifier;
3806 ssleep(clp->cl_lease_time / HZ + 1);
3811 int nfs4_proc_setclientid_confirm(struct nfs_client *clp,
3812 struct nfs4_setclientid_res *arg,
3813 struct rpc_cred *cred)
3815 struct nfs_fsinfo fsinfo;
3816 struct rpc_message msg = {
3817 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETCLIENTID_CONFIRM],
3819 .rpc_resp = &fsinfo,
3826 status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT);
3828 spin_lock(&clp->cl_lock);
3829 clp->cl_lease_time = fsinfo.lease_time * HZ;
3830 clp->cl_last_renewal = now;
3831 spin_unlock(&clp->cl_lock);
3836 struct nfs4_delegreturndata {
3837 struct nfs4_delegreturnargs args;
3838 struct nfs4_delegreturnres res;
3840 nfs4_stateid stateid;
3841 unsigned long timestamp;
3842 struct nfs_fattr fattr;
3846 static void nfs4_delegreturn_done(struct rpc_task *task, void *calldata)
3848 struct nfs4_delegreturndata *data = calldata;
3850 if (!nfs4_sequence_done(task, &data->res.seq_res))
3853 switch (task->tk_status) {
3854 case -NFS4ERR_STALE_STATEID:
3855 case -NFS4ERR_EXPIRED:
3857 renew_lease(data->res.server, data->timestamp);
3860 if (nfs4_async_handle_error(task, data->res.server, NULL) ==
3862 rpc_restart_call_prepare(task);
3866 data->rpc_status = task->tk_status;
3869 static void nfs4_delegreturn_release(void *calldata)
3874 #if defined(CONFIG_NFS_V4_1)
3875 static void nfs4_delegreturn_prepare(struct rpc_task *task, void *data)
3877 struct nfs4_delegreturndata *d_data;
3879 d_data = (struct nfs4_delegreturndata *)data;
3881 if (nfs4_setup_sequence(d_data->res.server,
3882 &d_data->args.seq_args,
3883 &d_data->res.seq_res, 1, task))
3885 rpc_call_start(task);
3887 #endif /* CONFIG_NFS_V4_1 */
3889 static const struct rpc_call_ops nfs4_delegreturn_ops = {
3890 #if defined(CONFIG_NFS_V4_1)
3891 .rpc_call_prepare = nfs4_delegreturn_prepare,
3892 #endif /* CONFIG_NFS_V4_1 */
3893 .rpc_call_done = nfs4_delegreturn_done,
3894 .rpc_release = nfs4_delegreturn_release,
3897 static int _nfs4_proc_delegreturn(struct inode *inode, struct rpc_cred *cred, const nfs4_stateid *stateid, int issync)
3899 struct nfs4_delegreturndata *data;
3900 struct nfs_server *server = NFS_SERVER(inode);
3901 struct rpc_task *task;
3902 struct rpc_message msg = {
3903 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DELEGRETURN],
3906 struct rpc_task_setup task_setup_data = {
3907 .rpc_client = server->client,
3908 .rpc_message = &msg,
3909 .callback_ops = &nfs4_delegreturn_ops,
3910 .flags = RPC_TASK_ASYNC,
3914 data = kzalloc(sizeof(*data), GFP_NOFS);
3917 data->args.fhandle = &data->fh;
3918 data->args.stateid = &data->stateid;
3919 data->args.bitmask = server->attr_bitmask;
3920 nfs_copy_fh(&data->fh, NFS_FH(inode));
3921 memcpy(&data->stateid, stateid, sizeof(data->stateid));
3922 data->res.fattr = &data->fattr;
3923 data->res.server = server;
3924 nfs_fattr_init(data->res.fattr);
3925 data->timestamp = jiffies;
3926 data->rpc_status = 0;
3928 task_setup_data.callback_data = data;
3929 msg.rpc_argp = &data->args;
3930 msg.rpc_resp = &data->res;
3931 task = rpc_run_task(&task_setup_data);
3933 return PTR_ERR(task);
3936 status = nfs4_wait_for_completion_rpc_task(task);
3939 status = data->rpc_status;
3942 nfs_refresh_inode(inode, &data->fattr);
3948 int nfs4_proc_delegreturn(struct inode *inode, struct rpc_cred *cred, const nfs4_stateid *stateid, int issync)
3950 struct nfs_server *server = NFS_SERVER(inode);
3951 struct nfs4_exception exception = { };
3954 err = _nfs4_proc_delegreturn(inode, cred, stateid, issync);
3956 case -NFS4ERR_STALE_STATEID:
3957 case -NFS4ERR_EXPIRED:
3961 err = nfs4_handle_exception(server, err, &exception);
3962 } while (exception.retry);
3966 #define NFS4_LOCK_MINTIMEOUT (1 * HZ)
3967 #define NFS4_LOCK_MAXTIMEOUT (30 * HZ)
3970 * sleep, with exponential backoff, and retry the LOCK operation.
3972 static unsigned long
3973 nfs4_set_lock_task_retry(unsigned long timeout)
3975 schedule_timeout_killable(timeout);
3977 if (timeout > NFS4_LOCK_MAXTIMEOUT)
3978 return NFS4_LOCK_MAXTIMEOUT;
3982 static int _nfs4_proc_getlk(struct nfs4_state *state, int cmd, struct file_lock *request)
3984 struct inode *inode = state->inode;
3985 struct nfs_server *server = NFS_SERVER(inode);
3986 struct nfs_client *clp = server->nfs_client;
3987 struct nfs_lockt_args arg = {
3988 .fh = NFS_FH(inode),
3991 struct nfs_lockt_res res = {
3994 struct rpc_message msg = {
3995 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCKT],
3998 .rpc_cred = state->owner->so_cred,
4000 struct nfs4_lock_state *lsp;
4003 arg.lock_owner.clientid = clp->cl_clientid;
4004 status = nfs4_set_lock_state(state, request);
4007 lsp = request->fl_u.nfs4_fl.owner;
4008 arg.lock_owner.id = lsp->ls_id.id;
4009 arg.lock_owner.s_dev = server->s_dev;
4010 status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1);
4013 request->fl_type = F_UNLCK;
4015 case -NFS4ERR_DENIED:
4018 request->fl_ops->fl_release_private(request);
4023 static int nfs4_proc_getlk(struct nfs4_state *state, int cmd, struct file_lock *request)
4025 struct nfs4_exception exception = { };
4029 err = nfs4_handle_exception(NFS_SERVER(state->inode),
4030 _nfs4_proc_getlk(state, cmd, request),
4032 } while (exception.retry);
4036 static int do_vfs_lock(struct file *file, struct file_lock *fl)
4039 switch (fl->fl_flags & (FL_POSIX|FL_FLOCK)) {
4041 res = posix_lock_file_wait(file, fl);
4044 res = flock_lock_file_wait(file, fl);
4052 struct nfs4_unlockdata {
4053 struct nfs_locku_args arg;
4054 struct nfs_locku_res res;
4055 struct nfs4_lock_state *lsp;
4056 struct nfs_open_context *ctx;
4057 struct file_lock fl;
4058 const struct nfs_server *server;
4059 unsigned long timestamp;
4062 static struct nfs4_unlockdata *nfs4_alloc_unlockdata(struct file_lock *fl,
4063 struct nfs_open_context *ctx,
4064 struct nfs4_lock_state *lsp,
4065 struct nfs_seqid *seqid)
4067 struct nfs4_unlockdata *p;
4068 struct inode *inode = lsp->ls_state->inode;
4070 p = kzalloc(sizeof(*p), GFP_NOFS);
4073 p->arg.fh = NFS_FH(inode);
4075 p->arg.seqid = seqid;
4076 p->res.seqid = seqid;
4077 p->arg.stateid = &lsp->ls_stateid;
4079 atomic_inc(&lsp->ls_count);
4080 /* Ensure we don't close file until we're done freeing locks! */
4081 p->ctx = get_nfs_open_context(ctx);
4082 memcpy(&p->fl, fl, sizeof(p->fl));
4083 p->server = NFS_SERVER(inode);
4087 static void nfs4_locku_release_calldata(void *data)
4089 struct nfs4_unlockdata *calldata = data;
4090 nfs_free_seqid(calldata->arg.seqid);
4091 nfs4_put_lock_state(calldata->lsp);
4092 put_nfs_open_context(calldata->ctx);
4096 static void nfs4_locku_done(struct rpc_task *task, void *data)
4098 struct nfs4_unlockdata *calldata = data;
4100 if (!nfs4_sequence_done(task, &calldata->res.seq_res))
4102 switch (task->tk_status) {
4104 memcpy(calldata->lsp->ls_stateid.data,
4105 calldata->res.stateid.data,
4106 sizeof(calldata->lsp->ls_stateid.data));
4107 renew_lease(calldata->server, calldata->timestamp);
4109 case -NFS4ERR_BAD_STATEID:
4110 case -NFS4ERR_OLD_STATEID:
4111 case -NFS4ERR_STALE_STATEID:
4112 case -NFS4ERR_EXPIRED:
4115 if (nfs4_async_handle_error(task, calldata->server, NULL) == -EAGAIN)
4116 rpc_restart_call_prepare(task);
4120 static void nfs4_locku_prepare(struct rpc_task *task, void *data)
4122 struct nfs4_unlockdata *calldata = data;
4124 if (nfs_wait_on_sequence(calldata->arg.seqid, task) != 0)
4126 if ((calldata->lsp->ls_flags & NFS_LOCK_INITIALIZED) == 0) {
4127 /* Note: exit _without_ running nfs4_locku_done */
4128 task->tk_action = NULL;
4131 calldata->timestamp = jiffies;
4132 if (nfs4_setup_sequence(calldata->server,
4133 &calldata->arg.seq_args,
4134 &calldata->res.seq_res, 1, task))
4136 rpc_call_start(task);
4139 static const struct rpc_call_ops nfs4_locku_ops = {
4140 .rpc_call_prepare = nfs4_locku_prepare,
4141 .rpc_call_done = nfs4_locku_done,
4142 .rpc_release = nfs4_locku_release_calldata,
4145 static struct rpc_task *nfs4_do_unlck(struct file_lock *fl,
4146 struct nfs_open_context *ctx,
4147 struct nfs4_lock_state *lsp,
4148 struct nfs_seqid *seqid)
4150 struct nfs4_unlockdata *data;
4151 struct rpc_message msg = {
4152 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCKU],
4153 .rpc_cred = ctx->cred,
4155 struct rpc_task_setup task_setup_data = {
4156 .rpc_client = NFS_CLIENT(lsp->ls_state->inode),
4157 .rpc_message = &msg,
4158 .callback_ops = &nfs4_locku_ops,
4159 .workqueue = nfsiod_workqueue,
4160 .flags = RPC_TASK_ASYNC,
4163 /* Ensure this is an unlock - when canceling a lock, the
4164 * canceled lock is passed in, and it won't be an unlock.
4166 fl->fl_type = F_UNLCK;
4168 data = nfs4_alloc_unlockdata(fl, ctx, lsp, seqid);
4170 nfs_free_seqid(seqid);
4171 return ERR_PTR(-ENOMEM);
4174 msg.rpc_argp = &data->arg;
4175 msg.rpc_resp = &data->res;
4176 task_setup_data.callback_data = data;
4177 return rpc_run_task(&task_setup_data);
4180 static int nfs4_proc_unlck(struct nfs4_state *state, int cmd, struct file_lock *request)
4182 struct nfs_inode *nfsi = NFS_I(state->inode);
4183 struct nfs_seqid *seqid;
4184 struct nfs4_lock_state *lsp;
4185 struct rpc_task *task;
4187 unsigned char fl_flags = request->fl_flags;
4189 status = nfs4_set_lock_state(state, request);
4190 /* Unlock _before_ we do the RPC call */
4191 request->fl_flags |= FL_EXISTS;
4192 down_read(&nfsi->rwsem);
4193 if (do_vfs_lock(request->fl_file, request) == -ENOENT) {
4194 up_read(&nfsi->rwsem);
4197 up_read(&nfsi->rwsem);
4200 /* Is this a delegated lock? */
4201 if (test_bit(NFS_DELEGATED_STATE, &state->flags))
4203 lsp = request->fl_u.nfs4_fl.owner;
4204 seqid = nfs_alloc_seqid(&lsp->ls_seqid, GFP_KERNEL);
4208 task = nfs4_do_unlck(request, nfs_file_open_context(request->fl_file), lsp, seqid);
4209 status = PTR_ERR(task);
4212 status = nfs4_wait_for_completion_rpc_task(task);
4215 request->fl_flags = fl_flags;
4219 struct nfs4_lockdata {
4220 struct nfs_lock_args arg;
4221 struct nfs_lock_res res;
4222 struct nfs4_lock_state *lsp;
4223 struct nfs_open_context *ctx;
4224 struct file_lock fl;
4225 unsigned long timestamp;
4228 struct nfs_server *server;
4231 static struct nfs4_lockdata *nfs4_alloc_lockdata(struct file_lock *fl,
4232 struct nfs_open_context *ctx, struct nfs4_lock_state *lsp,
4235 struct nfs4_lockdata *p;
4236 struct inode *inode = lsp->ls_state->inode;
4237 struct nfs_server *server = NFS_SERVER(inode);
4239 p = kzalloc(sizeof(*p), gfp_mask);
4243 p->arg.fh = NFS_FH(inode);
4245 p->arg.open_seqid = nfs_alloc_seqid(&lsp->ls_state->owner->so_seqid, gfp_mask);
4246 if (p->arg.open_seqid == NULL)
4248 p->arg.lock_seqid = nfs_alloc_seqid(&lsp->ls_seqid, gfp_mask);
4249 if (p->arg.lock_seqid == NULL)
4250 goto out_free_seqid;
4251 p->arg.lock_stateid = &lsp->ls_stateid;
4252 p->arg.lock_owner.clientid = server->nfs_client->cl_clientid;
4253 p->arg.lock_owner.id = lsp->ls_id.id;
4254 p->arg.lock_owner.s_dev = server->s_dev;
4255 p->res.lock_seqid = p->arg.lock_seqid;
4258 atomic_inc(&lsp->ls_count);
4259 p->ctx = get_nfs_open_context(ctx);
4260 memcpy(&p->fl, fl, sizeof(p->fl));
4263 nfs_free_seqid(p->arg.open_seqid);
4269 static void nfs4_lock_prepare(struct rpc_task *task, void *calldata)
4271 struct nfs4_lockdata *data = calldata;
4272 struct nfs4_state *state = data->lsp->ls_state;
4274 dprintk("%s: begin!\n", __func__);
4275 if (nfs_wait_on_sequence(data->arg.lock_seqid, task) != 0)
4277 /* Do we need to do an open_to_lock_owner? */
4278 if (!(data->arg.lock_seqid->sequence->flags & NFS_SEQID_CONFIRMED)) {
4279 if (nfs_wait_on_sequence(data->arg.open_seqid, task) != 0)
4281 data->arg.open_stateid = &state->stateid;
4282 data->arg.new_lock_owner = 1;
4283 data->res.open_seqid = data->arg.open_seqid;
4285 data->arg.new_lock_owner = 0;
4286 data->timestamp = jiffies;
4287 if (nfs4_setup_sequence(data->server,
4288 &data->arg.seq_args,
4289 &data->res.seq_res, 1, task))
4291 rpc_call_start(task);
4292 dprintk("%s: done!, ret = %d\n", __func__, data->rpc_status);
4295 static void nfs4_recover_lock_prepare(struct rpc_task *task, void *calldata)
4297 rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED);
4298 nfs4_lock_prepare(task, calldata);
4301 static void nfs4_lock_done(struct rpc_task *task, void *calldata)
4303 struct nfs4_lockdata *data = calldata;
4305 dprintk("%s: begin!\n", __func__);
4307 if (!nfs4_sequence_done(task, &data->res.seq_res))
4310 data->rpc_status = task->tk_status;
4311 if (data->arg.new_lock_owner != 0) {
4312 if (data->rpc_status == 0)
4313 nfs_confirm_seqid(&data->lsp->ls_seqid, 0);
4317 if (data->rpc_status == 0) {
4318 memcpy(data->lsp->ls_stateid.data, data->res.stateid.data,
4319 sizeof(data->lsp->ls_stateid.data));
4320 data->lsp->ls_flags |= NFS_LOCK_INITIALIZED;
4321 renew_lease(NFS_SERVER(data->ctx->dentry->d_inode), data->timestamp);
4324 dprintk("%s: done, ret = %d!\n", __func__, data->rpc_status);
4327 static void nfs4_lock_release(void *calldata)
4329 struct nfs4_lockdata *data = calldata;
4331 dprintk("%s: begin!\n", __func__);
4332 nfs_free_seqid(data->arg.open_seqid);
4333 if (data->cancelled != 0) {
4334 struct rpc_task *task;
4335 task = nfs4_do_unlck(&data->fl, data->ctx, data->lsp,
4336 data->arg.lock_seqid);
4338 rpc_put_task_async(task);
4339 dprintk("%s: cancelling lock!\n", __func__);
4341 nfs_free_seqid(data->arg.lock_seqid);
4342 nfs4_put_lock_state(data->lsp);
4343 put_nfs_open_context(data->ctx);
4345 dprintk("%s: done!\n", __func__);
4348 static const struct rpc_call_ops nfs4_lock_ops = {
4349 .rpc_call_prepare = nfs4_lock_prepare,
4350 .rpc_call_done = nfs4_lock_done,
4351 .rpc_release = nfs4_lock_release,
4354 static const struct rpc_call_ops nfs4_recover_lock_ops = {
4355 .rpc_call_prepare = nfs4_recover_lock_prepare,
4356 .rpc_call_done = nfs4_lock_done,
4357 .rpc_release = nfs4_lock_release,
4360 static void nfs4_handle_setlk_error(struct nfs_server *server, struct nfs4_lock_state *lsp, int new_lock_owner, int error)
4363 case -NFS4ERR_ADMIN_REVOKED:
4364 case -NFS4ERR_BAD_STATEID:
4365 lsp->ls_seqid.flags &= ~NFS_SEQID_CONFIRMED;
4366 if (new_lock_owner != 0 ||
4367 (lsp->ls_flags & NFS_LOCK_INITIALIZED) != 0)
4368 nfs4_schedule_stateid_recovery(server, lsp->ls_state);
4370 case -NFS4ERR_STALE_STATEID:
4371 lsp->ls_seqid.flags &= ~NFS_SEQID_CONFIRMED;
4372 case -NFS4ERR_EXPIRED:
4373 nfs4_schedule_lease_recovery(server->nfs_client);
4377 static int _nfs4_do_setlk(struct nfs4_state *state, int cmd, struct file_lock *fl, int recovery_type)
4379 struct nfs4_lockdata *data;
4380 struct rpc_task *task;
4381 struct rpc_message msg = {
4382 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCK],
4383 .rpc_cred = state->owner->so_cred,
4385 struct rpc_task_setup task_setup_data = {
4386 .rpc_client = NFS_CLIENT(state->inode),
4387 .rpc_message = &msg,
4388 .callback_ops = &nfs4_lock_ops,
4389 .workqueue = nfsiod_workqueue,
4390 .flags = RPC_TASK_ASYNC,
4394 dprintk("%s: begin!\n", __func__);
4395 data = nfs4_alloc_lockdata(fl, nfs_file_open_context(fl->fl_file),
4396 fl->fl_u.nfs4_fl.owner,
4397 recovery_type == NFS_LOCK_NEW ? GFP_KERNEL : GFP_NOFS);
4401 data->arg.block = 1;
4402 if (recovery_type > NFS_LOCK_NEW) {
4403 if (recovery_type == NFS_LOCK_RECLAIM)
4404 data->arg.reclaim = NFS_LOCK_RECLAIM;
4405 task_setup_data.callback_ops = &nfs4_recover_lock_ops;
4407 msg.rpc_argp = &data->arg;
4408 msg.rpc_resp = &data->res;
4409 task_setup_data.callback_data = data;
4410 task = rpc_run_task(&task_setup_data);
4412 return PTR_ERR(task);
4413 ret = nfs4_wait_for_completion_rpc_task(task);
4415 ret = data->rpc_status;
4417 nfs4_handle_setlk_error(data->server, data->lsp,
4418 data->arg.new_lock_owner, ret);
4420 data->cancelled = 1;
4422 dprintk("%s: done, ret = %d!\n", __func__, ret);
4426 static int nfs4_lock_reclaim(struct nfs4_state *state, struct file_lock *request)
4428 struct nfs_server *server = NFS_SERVER(state->inode);
4429 struct nfs4_exception exception = { };
4433 /* Cache the lock if possible... */
4434 if (test_bit(NFS_DELEGATED_STATE, &state->flags) != 0)
4436 err = _nfs4_do_setlk(state, F_SETLK, request, NFS_LOCK_RECLAIM);
4437 if (err != -NFS4ERR_DELAY)
4439 nfs4_handle_exception(server, err, &exception);
4440 } while (exception.retry);
4444 static int nfs4_lock_expired(struct nfs4_state *state, struct file_lock *request)
4446 struct nfs_server *server = NFS_SERVER(state->inode);
4447 struct nfs4_exception exception = { };
4450 err = nfs4_set_lock_state(state, request);
4454 if (test_bit(NFS_DELEGATED_STATE, &state->flags) != 0)
4456 err = _nfs4_do_setlk(state, F_SETLK, request, NFS_LOCK_EXPIRED);
4460 case -NFS4ERR_GRACE:
4461 case -NFS4ERR_DELAY:
4462 nfs4_handle_exception(server, err, &exception);
4465 } while (exception.retry);
4470 #if defined(CONFIG_NFS_V4_1)
4471 static int nfs41_lock_expired(struct nfs4_state *state, struct file_lock *request)
4474 struct nfs_server *server = NFS_SERVER(state->inode);
4476 status = nfs41_test_stateid(server, state);
4477 if (status == NFS_OK)
4479 nfs41_free_stateid(server, state);
4480 return nfs4_lock_expired(state, request);
4484 static int _nfs4_proc_setlk(struct nfs4_state *state, int cmd, struct file_lock *request)
4486 struct nfs_inode *nfsi = NFS_I(state->inode);
4487 unsigned char fl_flags = request->fl_flags;
4488 int status = -ENOLCK;
4490 if ((fl_flags & FL_POSIX) &&
4491 !test_bit(NFS_STATE_POSIX_LOCKS, &state->flags))
4493 /* Is this a delegated open? */
4494 status = nfs4_set_lock_state(state, request);
4497 request->fl_flags |= FL_ACCESS;
4498 status = do_vfs_lock(request->fl_file, request);
4501 down_read(&nfsi->rwsem);
4502 if (test_bit(NFS_DELEGATED_STATE, &state->flags)) {
4503 /* Yes: cache locks! */
4504 /* ...but avoid races with delegation recall... */
4505 request->fl_flags = fl_flags & ~FL_SLEEP;
4506 status = do_vfs_lock(request->fl_file, request);
4509 status = _nfs4_do_setlk(state, cmd, request, NFS_LOCK_NEW);
4512 /* Note: we always want to sleep here! */
4513 request->fl_flags = fl_flags | FL_SLEEP;
4514 if (do_vfs_lock(request->fl_file, request) < 0)
4515 printk(KERN_WARNING "%s: VFS is out of sync with lock manager!\n", __func__);
4517 up_read(&nfsi->rwsem);
4519 request->fl_flags = fl_flags;
4523 static int nfs4_proc_setlk(struct nfs4_state *state, int cmd, struct file_lock *request)
4525 struct nfs4_exception exception = { };
4529 err = _nfs4_proc_setlk(state, cmd, request);
4530 if (err == -NFS4ERR_DENIED)
4532 err = nfs4_handle_exception(NFS_SERVER(state->inode),
4534 } while (exception.retry);
4539 nfs4_proc_lock(struct file *filp, int cmd, struct file_lock *request)
4541 struct nfs_open_context *ctx;
4542 struct nfs4_state *state;
4543 unsigned long timeout = NFS4_LOCK_MINTIMEOUT;
4546 /* verify open state */
4547 ctx = nfs_file_open_context(filp);
4550 if (request->fl_start < 0 || request->fl_end < 0)
4553 if (IS_GETLK(cmd)) {
4555 return nfs4_proc_getlk(state, F_GETLK, request);
4559 if (!(IS_SETLK(cmd) || IS_SETLKW(cmd)))
4562 if (request->fl_type == F_UNLCK) {
4564 return nfs4_proc_unlck(state, cmd, request);
4571 status = nfs4_proc_setlk(state, cmd, request);
4572 if ((status != -EAGAIN) || IS_SETLK(cmd))
4574 timeout = nfs4_set_lock_task_retry(timeout);
4575 status = -ERESTARTSYS;
4578 } while(status < 0);
4582 int nfs4_lock_delegation_recall(struct nfs4_state *state, struct file_lock *fl)
4584 struct nfs_server *server = NFS_SERVER(state->inode);
4585 struct nfs4_exception exception = { };
4588 err = nfs4_set_lock_state(state, fl);
4592 err = _nfs4_do_setlk(state, F_SETLK, fl, NFS_LOCK_NEW);
4595 printk(KERN_ERR "%s: unhandled error %d.\n",
4600 case -NFS4ERR_EXPIRED:
4601 nfs4_schedule_stateid_recovery(server, state);
4602 case -NFS4ERR_STALE_CLIENTID:
4603 case -NFS4ERR_STALE_STATEID:
4604 nfs4_schedule_lease_recovery(server->nfs_client);
4606 case -NFS4ERR_BADSESSION:
4607 case -NFS4ERR_BADSLOT:
4608 case -NFS4ERR_BAD_HIGH_SLOT:
4609 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION:
4610 case -NFS4ERR_DEADSESSION:
4611 nfs4_schedule_session_recovery(server->nfs_client->cl_session);
4615 * The show must go on: exit, but mark the
4616 * stateid as needing recovery.
4618 case -NFS4ERR_ADMIN_REVOKED:
4619 case -NFS4ERR_BAD_STATEID:
4620 case -NFS4ERR_OPENMODE:
4621 nfs4_schedule_stateid_recovery(server, state);
4626 * User RPCSEC_GSS context has expired.
4627 * We cannot recover this stateid now, so
4628 * skip it and allow recovery thread to
4634 case -NFS4ERR_DENIED:
4635 /* kill_proc(fl->fl_pid, SIGLOST, 1); */
4638 case -NFS4ERR_DELAY:
4641 err = nfs4_handle_exception(server, err, &exception);
4642 } while (exception.retry);
4647 static void nfs4_release_lockowner_release(void *calldata)
4652 const struct rpc_call_ops nfs4_release_lockowner_ops = {
4653 .rpc_release = nfs4_release_lockowner_release,
4656 void nfs4_release_lockowner(const struct nfs4_lock_state *lsp)
4658 struct nfs_server *server = lsp->ls_state->owner->so_server;
4659 struct nfs_release_lockowner_args *args;
4660 struct rpc_message msg = {
4661 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RELEASE_LOCKOWNER],
4664 if (server->nfs_client->cl_mvops->minor_version != 0)
4666 args = kmalloc(sizeof(*args), GFP_NOFS);
4669 args->lock_owner.clientid = server->nfs_client->cl_clientid;
4670 args->lock_owner.id = lsp->ls_id.id;
4671 args->lock_owner.s_dev = server->s_dev;
4672 msg.rpc_argp = args;
4673 rpc_call_async(server->client, &msg, 0, &nfs4_release_lockowner_ops, args);
4676 #define XATTR_NAME_NFSV4_ACL "system.nfs4_acl"
4678 static int nfs4_xattr_set_nfs4_acl(struct dentry *dentry, const char *key,
4679 const void *buf, size_t buflen,
4680 int flags, int type)
4682 if (strcmp(key, "") != 0)
4685 return nfs4_proc_set_acl(dentry->d_inode, buf, buflen);
4688 static int nfs4_xattr_get_nfs4_acl(struct dentry *dentry, const char *key,
4689 void *buf, size_t buflen, int type)
4691 if (strcmp(key, "") != 0)
4694 return nfs4_proc_get_acl(dentry->d_inode, buf, buflen);
4697 static size_t nfs4_xattr_list_nfs4_acl(struct dentry *dentry, char *list,
4698 size_t list_len, const char *name,
4699 size_t name_len, int type)
4701 size_t len = sizeof(XATTR_NAME_NFSV4_ACL);
4703 if (!nfs4_server_supports_acls(NFS_SERVER(dentry->d_inode)))
4706 if (list && len <= list_len)
4707 memcpy(list, XATTR_NAME_NFSV4_ACL, len);
4712 * nfs_fhget will use either the mounted_on_fileid or the fileid
4714 static void nfs_fixup_referral_attributes(struct nfs_fattr *fattr)
4716 if (!(((fattr->valid & NFS_ATTR_FATTR_MOUNTED_ON_FILEID) ||
4717 (fattr->valid & NFS_ATTR_FATTR_FILEID)) &&
4718 (fattr->valid & NFS_ATTR_FATTR_FSID) &&
4719 (fattr->valid & NFS_ATTR_FATTR_V4_REFERRAL)))
4722 fattr->valid |= NFS_ATTR_FATTR_TYPE | NFS_ATTR_FATTR_MODE |
4723 NFS_ATTR_FATTR_NLINK;
4724 fattr->mode = S_IFDIR | S_IRUGO | S_IXUGO;
4728 int nfs4_proc_fs_locations(struct inode *dir, const struct qstr *name,
4729 struct nfs4_fs_locations *fs_locations, struct page *page)
4731 struct nfs_server *server = NFS_SERVER(dir);
4733 [0] = FATTR4_WORD0_FSID | FATTR4_WORD0_FS_LOCATIONS,
4735 struct nfs4_fs_locations_arg args = {
4736 .dir_fh = NFS_FH(dir),
4741 struct nfs4_fs_locations_res res = {
4742 .fs_locations = fs_locations,
4744 struct rpc_message msg = {
4745 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FS_LOCATIONS],
4751 dprintk("%s: start\n", __func__);
4753 /* Ask for the fileid of the absent filesystem if mounted_on_fileid
4754 * is not supported */
4755 if (NFS_SERVER(dir)->attr_bitmask[1] & FATTR4_WORD1_MOUNTED_ON_FILEID)
4756 bitmask[1] |= FATTR4_WORD1_MOUNTED_ON_FILEID;
4758 bitmask[0] |= FATTR4_WORD0_FILEID;
4760 nfs_fattr_init(&fs_locations->fattr);
4761 fs_locations->server = server;
4762 fs_locations->nlocations = 0;
4763 status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0);
4764 dprintk("%s: returned status = %d\n", __func__, status);
4768 static int _nfs4_proc_secinfo(struct inode *dir, const struct qstr *name, struct nfs4_secinfo_flavors *flavors)
4771 struct nfs4_secinfo_arg args = {
4772 .dir_fh = NFS_FH(dir),
4775 struct nfs4_secinfo_res res = {
4778 struct rpc_message msg = {
4779 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SECINFO],
4784 dprintk("NFS call secinfo %s\n", name->name);
4785 status = nfs4_call_sync(NFS_SERVER(dir)->client, NFS_SERVER(dir), &msg, &args.seq_args, &res.seq_res, 0);
4786 dprintk("NFS reply secinfo: %d\n", status);
4790 int nfs4_proc_secinfo(struct inode *dir, const struct qstr *name, struct nfs4_secinfo_flavors *flavors)
4792 struct nfs4_exception exception = { };
4795 err = nfs4_handle_exception(NFS_SERVER(dir),
4796 _nfs4_proc_secinfo(dir, name, flavors),
4798 } while (exception.retry);
4802 #ifdef CONFIG_NFS_V4_1
4804 * Check the exchange flags returned by the server for invalid flags, having
4805 * both PNFS and NON_PNFS flags set, and not having one of NON_PNFS, PNFS, or
4808 static int nfs4_check_cl_exchange_flags(u32 flags)
4810 if (flags & ~EXCHGID4_FLAG_MASK_R)
4812 if ((flags & EXCHGID4_FLAG_USE_PNFS_MDS) &&
4813 (flags & EXCHGID4_FLAG_USE_NON_PNFS))
4815 if (!(flags & (EXCHGID4_FLAG_MASK_PNFS)))
4819 return -NFS4ERR_INVAL;
4823 nfs41_same_server_scope(struct server_scope *a, struct server_scope *b)
4825 if (a->server_scope_sz == b->server_scope_sz &&
4826 memcmp(a->server_scope, b->server_scope, a->server_scope_sz) == 0)
4833 * nfs4_proc_exchange_id()
4835 * Since the clientid has expired, all compounds using sessions
4836 * associated with the stale clientid will be returning
4837 * NFS4ERR_BADSESSION in the sequence operation, and will therefore
4838 * be in some phase of session reset.
4840 int nfs4_proc_exchange_id(struct nfs_client *clp, struct rpc_cred *cred)
4842 nfs4_verifier verifier;
4843 struct nfs41_exchange_id_args args = {
4845 .flags = EXCHGID4_FLAG_SUPP_MOVED_REFER,
4847 struct nfs41_exchange_id_res res = {
4851 struct rpc_message msg = {
4852 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_EXCHANGE_ID],
4859 dprintk("--> %s\n", __func__);
4860 BUG_ON(clp == NULL);
4862 p = (u32 *)verifier.data;
4863 *p++ = htonl((u32)clp->cl_boot_time.tv_sec);
4864 *p = htonl((u32)clp->cl_boot_time.tv_nsec);
4865 args.verifier = &verifier;
4867 args.id_len = scnprintf(args.id, sizeof(args.id),
4870 init_utsname()->nodename,
4871 init_utsname()->domainname,
4872 clp->cl_rpcclient->cl_auth->au_flavor);
4874 res.server_scope = kzalloc(sizeof(struct server_scope), GFP_KERNEL);
4875 if (unlikely(!res.server_scope))
4878 status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT);
4880 status = nfs4_check_cl_exchange_flags(clp->cl_exchange_flags);
4883 if (clp->server_scope &&
4884 !nfs41_same_server_scope(clp->server_scope,
4885 res.server_scope)) {
4886 dprintk("%s: server_scope mismatch detected\n",
4888 set_bit(NFS4CLNT_SERVER_SCOPE_MISMATCH, &clp->cl_state);
4889 kfree(clp->server_scope);
4890 clp->server_scope = NULL;
4893 if (!clp->server_scope)
4894 clp->server_scope = res.server_scope;
4896 kfree(res.server_scope);
4899 dprintk("<-- %s status= %d\n", __func__, status);
4903 struct nfs4_get_lease_time_data {
4904 struct nfs4_get_lease_time_args *args;
4905 struct nfs4_get_lease_time_res *res;
4906 struct nfs_client *clp;
4909 static void nfs4_get_lease_time_prepare(struct rpc_task *task,
4913 struct nfs4_get_lease_time_data *data =
4914 (struct nfs4_get_lease_time_data *)calldata;
4916 dprintk("--> %s\n", __func__);
4917 rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED);
4918 /* just setup sequence, do not trigger session recovery
4919 since we're invoked within one */
4920 ret = nfs41_setup_sequence(data->clp->cl_session,
4921 &data->args->la_seq_args,
4922 &data->res->lr_seq_res, 0, task);
4924 BUG_ON(ret == -EAGAIN);
4925 rpc_call_start(task);
4926 dprintk("<-- %s\n", __func__);
4930 * Called from nfs4_state_manager thread for session setup, so don't recover
4931 * from sequence operation or clientid errors.
4933 static void nfs4_get_lease_time_done(struct rpc_task *task, void *calldata)
4935 struct nfs4_get_lease_time_data *data =
4936 (struct nfs4_get_lease_time_data *)calldata;
4938 dprintk("--> %s\n", __func__);
4939 if (!nfs41_sequence_done(task, &data->res->lr_seq_res))
4941 switch (task->tk_status) {
4942 case -NFS4ERR_DELAY:
4943 case -NFS4ERR_GRACE:
4944 dprintk("%s Retry: tk_status %d\n", __func__, task->tk_status);
4945 rpc_delay(task, NFS4_POLL_RETRY_MIN);
4946 task->tk_status = 0;
4948 case -NFS4ERR_RETRY_UNCACHED_REP:
4949 rpc_restart_call_prepare(task);
4952 dprintk("<-- %s\n", __func__);
4955 struct rpc_call_ops nfs4_get_lease_time_ops = {
4956 .rpc_call_prepare = nfs4_get_lease_time_prepare,
4957 .rpc_call_done = nfs4_get_lease_time_done,
4960 int nfs4_proc_get_lease_time(struct nfs_client *clp, struct nfs_fsinfo *fsinfo)
4962 struct rpc_task *task;
4963 struct nfs4_get_lease_time_args args;
4964 struct nfs4_get_lease_time_res res = {
4965 .lr_fsinfo = fsinfo,
4967 struct nfs4_get_lease_time_data data = {
4972 struct rpc_message msg = {
4973 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GET_LEASE_TIME],
4977 struct rpc_task_setup task_setup = {
4978 .rpc_client = clp->cl_rpcclient,
4979 .rpc_message = &msg,
4980 .callback_ops = &nfs4_get_lease_time_ops,
4981 .callback_data = &data,
4982 .flags = RPC_TASK_TIMEOUT,
4986 dprintk("--> %s\n", __func__);
4987 task = rpc_run_task(&task_setup);
4990 status = PTR_ERR(task);
4992 status = task->tk_status;
4995 dprintk("<-- %s return %d\n", __func__, status);
5001 * Reset a slot table
5003 static int nfs4_reset_slot_table(struct nfs4_slot_table *tbl, u32 max_reqs,
5006 struct nfs4_slot *new = NULL;
5010 dprintk("--> %s: max_reqs=%u, tbl->max_slots %d\n", __func__,
5011 max_reqs, tbl->max_slots);
5013 /* Does the newly negotiated max_reqs match the existing slot table? */
5014 if (max_reqs != tbl->max_slots) {
5016 new = kmalloc(max_reqs * sizeof(struct nfs4_slot),
5023 spin_lock(&tbl->slot_tbl_lock);
5026 tbl->max_slots = max_reqs;
5028 for (i = 0; i < tbl->max_slots; ++i)
5029 tbl->slots[i].seq_nr = ivalue;
5030 spin_unlock(&tbl->slot_tbl_lock);
5031 dprintk("%s: tbl=%p slots=%p max_slots=%d\n", __func__,
5032 tbl, tbl->slots, tbl->max_slots);
5034 dprintk("<-- %s: return %d\n", __func__, ret);
5038 /* Destroy the slot table */
5039 static void nfs4_destroy_slot_tables(struct nfs4_session *session)
5041 if (session->fc_slot_table.slots != NULL) {
5042 kfree(session->fc_slot_table.slots);
5043 session->fc_slot_table.slots = NULL;
5045 if (session->bc_slot_table.slots != NULL) {
5046 kfree(session->bc_slot_table.slots);
5047 session->bc_slot_table.slots = NULL;
5053 * Initialize slot table
5055 static int nfs4_init_slot_table(struct nfs4_slot_table *tbl,
5056 int max_slots, int ivalue)
5058 struct nfs4_slot *slot;
5061 BUG_ON(max_slots > NFS4_MAX_SLOT_TABLE);
5063 dprintk("--> %s: max_reqs=%u\n", __func__, max_slots);
5065 slot = kcalloc(max_slots, sizeof(struct nfs4_slot), GFP_NOFS);
5070 spin_lock(&tbl->slot_tbl_lock);
5071 tbl->max_slots = max_slots;
5073 tbl->highest_used_slotid = -1; /* no slot is currently used */
5074 spin_unlock(&tbl->slot_tbl_lock);
5075 dprintk("%s: tbl=%p slots=%p max_slots=%d\n", __func__,
5076 tbl, tbl->slots, tbl->max_slots);
5078 dprintk("<-- %s: return %d\n", __func__, ret);
5083 * Initialize or reset the forechannel and backchannel tables
5085 static int nfs4_setup_session_slot_tables(struct nfs4_session *ses)
5087 struct nfs4_slot_table *tbl;
5090 dprintk("--> %s\n", __func__);
5092 tbl = &ses->fc_slot_table;
5093 if (tbl->slots == NULL) {
5094 status = nfs4_init_slot_table(tbl, ses->fc_attrs.max_reqs, 1);
5095 if (status) /* -ENOMEM */
5098 status = nfs4_reset_slot_table(tbl, ses->fc_attrs.max_reqs, 1);
5103 tbl = &ses->bc_slot_table;
5104 if (tbl->slots == NULL) {
5105 status = nfs4_init_slot_table(tbl, ses->bc_attrs.max_reqs, 0);
5107 /* Fore and back channel share a connection so get
5108 * both slot tables or neither */
5109 nfs4_destroy_slot_tables(ses);
5111 status = nfs4_reset_slot_table(tbl, ses->bc_attrs.max_reqs, 0);
5115 struct nfs4_session *nfs4_alloc_session(struct nfs_client *clp)
5117 struct nfs4_session *session;
5118 struct nfs4_slot_table *tbl;
5120 session = kzalloc(sizeof(struct nfs4_session), GFP_NOFS);
5124 tbl = &session->fc_slot_table;
5125 tbl->highest_used_slotid = -1;
5126 spin_lock_init(&tbl->slot_tbl_lock);
5127 rpc_init_priority_wait_queue(&tbl->slot_tbl_waitq, "ForeChannel Slot table");
5128 init_completion(&tbl->complete);
5130 tbl = &session->bc_slot_table;
5131 tbl->highest_used_slotid = -1;
5132 spin_lock_init(&tbl->slot_tbl_lock);
5133 rpc_init_wait_queue(&tbl->slot_tbl_waitq, "BackChannel Slot table");
5134 init_completion(&tbl->complete);
5136 session->session_state = 1<<NFS4_SESSION_INITING;
5142 void nfs4_destroy_session(struct nfs4_session *session)
5144 nfs4_proc_destroy_session(session);
5145 dprintk("%s Destroy backchannel for xprt %p\n",
5146 __func__, session->clp->cl_rpcclient->cl_xprt);
5147 xprt_destroy_backchannel(session->clp->cl_rpcclient->cl_xprt,
5148 NFS41_BC_MIN_CALLBACKS);
5149 nfs4_destroy_slot_tables(session);
5154 * Initialize the values to be used by the client in CREATE_SESSION
5155 * If nfs4_init_session set the fore channel request and response sizes,
5158 * Set the back channel max_resp_sz_cached to zero to force the client to
5159 * always set csa_cachethis to FALSE because the current implementation
5160 * of the back channel DRC only supports caching the CB_SEQUENCE operation.
5162 static void nfs4_init_channel_attrs(struct nfs41_create_session_args *args)
5164 struct nfs4_session *session = args->client->cl_session;
5165 unsigned int mxrqst_sz = session->fc_attrs.max_rqst_sz,
5166 mxresp_sz = session->fc_attrs.max_resp_sz;
5169 mxrqst_sz = NFS_MAX_FILE_IO_SIZE;
5171 mxresp_sz = NFS_MAX_FILE_IO_SIZE;
5172 /* Fore channel attributes */
5173 args->fc_attrs.max_rqst_sz = mxrqst_sz;
5174 args->fc_attrs.max_resp_sz = mxresp_sz;
5175 args->fc_attrs.max_ops = NFS4_MAX_OPS;
5176 args->fc_attrs.max_reqs = session->clp->cl_rpcclient->cl_xprt->max_reqs;
5178 dprintk("%s: Fore Channel : max_rqst_sz=%u max_resp_sz=%u "
5179 "max_ops=%u max_reqs=%u\n",
5181 args->fc_attrs.max_rqst_sz, args->fc_attrs.max_resp_sz,
5182 args->fc_attrs.max_ops, args->fc_attrs.max_reqs);
5184 /* Back channel attributes */
5185 args->bc_attrs.max_rqst_sz = PAGE_SIZE;
5186 args->bc_attrs.max_resp_sz = PAGE_SIZE;
5187 args->bc_attrs.max_resp_sz_cached = 0;
5188 args->bc_attrs.max_ops = NFS4_MAX_BACK_CHANNEL_OPS;
5189 args->bc_attrs.max_reqs = 1;
5191 dprintk("%s: Back Channel : max_rqst_sz=%u max_resp_sz=%u "
5192 "max_resp_sz_cached=%u max_ops=%u max_reqs=%u\n",
5194 args->bc_attrs.max_rqst_sz, args->bc_attrs.max_resp_sz,
5195 args->bc_attrs.max_resp_sz_cached, args->bc_attrs.max_ops,
5196 args->bc_attrs.max_reqs);
5199 static int nfs4_verify_fore_channel_attrs(struct nfs41_create_session_args *args, struct nfs4_session *session)
5201 struct nfs4_channel_attrs *sent = &args->fc_attrs;
5202 struct nfs4_channel_attrs *rcvd = &session->fc_attrs;
5204 if (rcvd->max_resp_sz > sent->max_resp_sz)
5207 * Our requested max_ops is the minimum we need; we're not
5208 * prepared to break up compounds into smaller pieces than that.
5209 * So, no point even trying to continue if the server won't
5212 if (rcvd->max_ops < sent->max_ops)
5214 if (rcvd->max_reqs == 0)
5219 static int nfs4_verify_back_channel_attrs(struct nfs41_create_session_args *args, struct nfs4_session *session)
5221 struct nfs4_channel_attrs *sent = &args->bc_attrs;
5222 struct nfs4_channel_attrs *rcvd = &session->bc_attrs;
5224 if (rcvd->max_rqst_sz > sent->max_rqst_sz)
5226 if (rcvd->max_resp_sz < sent->max_resp_sz)
5228 if (rcvd->max_resp_sz_cached > sent->max_resp_sz_cached)
5230 /* These would render the backchannel useless: */
5231 if (rcvd->max_ops == 0)
5233 if (rcvd->max_reqs == 0)
5238 static int nfs4_verify_channel_attrs(struct nfs41_create_session_args *args,
5239 struct nfs4_session *session)
5243 ret = nfs4_verify_fore_channel_attrs(args, session);
5246 return nfs4_verify_back_channel_attrs(args, session);
5249 static int _nfs4_proc_create_session(struct nfs_client *clp)
5251 struct nfs4_session *session = clp->cl_session;
5252 struct nfs41_create_session_args args = {
5254 .cb_program = NFS4_CALLBACK,
5256 struct nfs41_create_session_res res = {
5259 struct rpc_message msg = {
5260 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CREATE_SESSION],
5266 nfs4_init_channel_attrs(&args);
5267 args.flags = (SESSION4_PERSIST | SESSION4_BACK_CHAN);
5269 status = rpc_call_sync(session->clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT);
5272 /* Verify the session's negotiated channel_attrs values */
5273 status = nfs4_verify_channel_attrs(&args, session);
5275 /* Increment the clientid slot sequence id */
5283 * Issues a CREATE_SESSION operation to the server.
5284 * It is the responsibility of the caller to verify the session is
5285 * expired before calling this routine.
5287 int nfs4_proc_create_session(struct nfs_client *clp)
5291 struct nfs4_session *session = clp->cl_session;
5293 dprintk("--> %s clp=%p session=%p\n", __func__, clp, session);
5295 status = _nfs4_proc_create_session(clp);
5299 /* Init or reset the session slot tables */
5300 status = nfs4_setup_session_slot_tables(session);
5301 dprintk("slot table setup returned %d\n", status);
5305 ptr = (unsigned *)&session->sess_id.data[0];
5306 dprintk("%s client>seqid %d sessionid %u:%u:%u:%u\n", __func__,
5307 clp->cl_seqid, ptr[0], ptr[1], ptr[2], ptr[3]);
5309 dprintk("<-- %s\n", __func__);
5314 * Issue the over-the-wire RPC DESTROY_SESSION.
5315 * The caller must serialize access to this routine.
5317 int nfs4_proc_destroy_session(struct nfs4_session *session)
5320 struct rpc_message msg;
5322 dprintk("--> nfs4_proc_destroy_session\n");
5324 /* session is still being setup */
5325 if (session->clp->cl_cons_state != NFS_CS_READY)
5328 msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DESTROY_SESSION];
5329 msg.rpc_argp = session;
5330 msg.rpc_resp = NULL;
5331 msg.rpc_cred = NULL;
5332 status = rpc_call_sync(session->clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT);
5336 "Got error %d from the server on DESTROY_SESSION. "
5337 "Session has been destroyed regardless...\n", status);
5339 dprintk("<-- nfs4_proc_destroy_session\n");
5343 int nfs4_init_session(struct nfs_server *server)
5345 struct nfs_client *clp = server->nfs_client;
5346 struct nfs4_session *session;
5347 unsigned int rsize, wsize;
5350 if (!nfs4_has_session(clp))
5353 session = clp->cl_session;
5354 if (!test_and_clear_bit(NFS4_SESSION_INITING, &session->session_state))
5357 rsize = server->rsize;
5359 rsize = NFS_MAX_FILE_IO_SIZE;
5360 wsize = server->wsize;
5362 wsize = NFS_MAX_FILE_IO_SIZE;
5364 session->fc_attrs.max_rqst_sz = wsize + nfs41_maxwrite_overhead;
5365 session->fc_attrs.max_resp_sz = rsize + nfs41_maxread_overhead;
5367 ret = nfs4_recover_expired_lease(server);
5369 ret = nfs4_check_client_ready(clp);
5373 int nfs4_init_ds_session(struct nfs_client *clp)
5375 struct nfs4_session *session = clp->cl_session;
5378 if (!test_and_clear_bit(NFS4_SESSION_INITING, &session->session_state))
5381 ret = nfs4_client_recover_expired_lease(clp);
5383 /* Test for the DS role */
5384 if (!is_ds_client(clp))
5387 ret = nfs4_check_client_ready(clp);
5391 EXPORT_SYMBOL_GPL(nfs4_init_ds_session);
5395 * Renew the cl_session lease.
5397 struct nfs4_sequence_data {
5398 struct nfs_client *clp;
5399 struct nfs4_sequence_args args;
5400 struct nfs4_sequence_res res;
5403 static void nfs41_sequence_release(void *data)
5405 struct nfs4_sequence_data *calldata = data;
5406 struct nfs_client *clp = calldata->clp;
5408 if (atomic_read(&clp->cl_count) > 1)
5409 nfs4_schedule_state_renewal(clp);
5410 nfs_put_client(clp);
5414 static int nfs41_sequence_handle_errors(struct rpc_task *task, struct nfs_client *clp)
5416 switch(task->tk_status) {
5417 case -NFS4ERR_DELAY:
5418 rpc_delay(task, NFS4_POLL_RETRY_MAX);
5421 nfs4_schedule_lease_recovery(clp);
5426 static void nfs41_sequence_call_done(struct rpc_task *task, void *data)
5428 struct nfs4_sequence_data *calldata = data;
5429 struct nfs_client *clp = calldata->clp;
5431 if (!nfs41_sequence_done(task, task->tk_msg.rpc_resp))
5434 if (task->tk_status < 0) {
5435 dprintk("%s ERROR %d\n", __func__, task->tk_status);
5436 if (atomic_read(&clp->cl_count) == 1)
5439 if (nfs41_sequence_handle_errors(task, clp) == -EAGAIN) {
5440 rpc_restart_call_prepare(task);
5444 dprintk("%s rpc_cred %p\n", __func__, task->tk_msg.rpc_cred);
5446 dprintk("<-- %s\n", __func__);
5449 static void nfs41_sequence_prepare(struct rpc_task *task, void *data)
5451 struct nfs4_sequence_data *calldata = data;
5452 struct nfs_client *clp = calldata->clp;
5453 struct nfs4_sequence_args *args;
5454 struct nfs4_sequence_res *res;
5456 args = task->tk_msg.rpc_argp;
5457 res = task->tk_msg.rpc_resp;
5459 if (nfs41_setup_sequence(clp->cl_session, args, res, 0, task))
5461 rpc_call_start(task);
5464 static const struct rpc_call_ops nfs41_sequence_ops = {
5465 .rpc_call_done = nfs41_sequence_call_done,
5466 .rpc_call_prepare = nfs41_sequence_prepare,
5467 .rpc_release = nfs41_sequence_release,
5470 static struct rpc_task *_nfs41_proc_sequence(struct nfs_client *clp, struct rpc_cred *cred)
5472 struct nfs4_sequence_data *calldata;
5473 struct rpc_message msg = {
5474 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SEQUENCE],
5477 struct rpc_task_setup task_setup_data = {
5478 .rpc_client = clp->cl_rpcclient,
5479 .rpc_message = &msg,
5480 .callback_ops = &nfs41_sequence_ops,
5481 .flags = RPC_TASK_ASYNC | RPC_TASK_SOFT,
5484 if (!atomic_inc_not_zero(&clp->cl_count))
5485 return ERR_PTR(-EIO);
5486 calldata = kzalloc(sizeof(*calldata), GFP_NOFS);
5487 if (calldata == NULL) {
5488 nfs_put_client(clp);
5489 return ERR_PTR(-ENOMEM);
5491 msg.rpc_argp = &calldata->args;
5492 msg.rpc_resp = &calldata->res;
5493 calldata->clp = clp;
5494 task_setup_data.callback_data = calldata;
5496 return rpc_run_task(&task_setup_data);
5499 static int nfs41_proc_async_sequence(struct nfs_client *clp, struct rpc_cred *cred, unsigned renew_flags)
5501 struct rpc_task *task;
5504 if ((renew_flags & NFS4_RENEW_TIMEOUT) == 0)
5506 task = _nfs41_proc_sequence(clp, cred);
5508 ret = PTR_ERR(task);
5510 rpc_put_task_async(task);
5511 dprintk("<-- %s status=%d\n", __func__, ret);
5515 static int nfs4_proc_sequence(struct nfs_client *clp, struct rpc_cred *cred)
5517 struct rpc_task *task;
5520 task = _nfs41_proc_sequence(clp, cred);
5522 ret = PTR_ERR(task);
5525 ret = rpc_wait_for_completion_task(task);
5527 struct nfs4_sequence_res *res = task->tk_msg.rpc_resp;
5529 if (task->tk_status == 0)
5530 nfs41_handle_sequence_flag_errors(clp, res->sr_status_flags);
5531 ret = task->tk_status;
5535 dprintk("<-- %s status=%d\n", __func__, ret);
5539 struct nfs4_reclaim_complete_data {
5540 struct nfs_client *clp;
5541 struct nfs41_reclaim_complete_args arg;
5542 struct nfs41_reclaim_complete_res res;
5545 static void nfs4_reclaim_complete_prepare(struct rpc_task *task, void *data)
5547 struct nfs4_reclaim_complete_data *calldata = data;
5549 rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED);
5550 if (nfs41_setup_sequence(calldata->clp->cl_session,
5551 &calldata->arg.seq_args,
5552 &calldata->res.seq_res, 0, task))
5555 rpc_call_start(task);
5558 static int nfs41_reclaim_complete_handle_errors(struct rpc_task *task, struct nfs_client *clp)
5560 switch(task->tk_status) {
5562 case -NFS4ERR_COMPLETE_ALREADY:
5563 case -NFS4ERR_WRONG_CRED: /* What to do here? */
5565 case -NFS4ERR_DELAY:
5566 rpc_delay(task, NFS4_POLL_RETRY_MAX);
5568 case -NFS4ERR_RETRY_UNCACHED_REP:
5571 nfs4_schedule_lease_recovery(clp);
5576 static void nfs4_reclaim_complete_done(struct rpc_task *task, void *data)
5578 struct nfs4_reclaim_complete_data *calldata = data;
5579 struct nfs_client *clp = calldata->clp;
5580 struct nfs4_sequence_res *res = &calldata->res.seq_res;
5582 dprintk("--> %s\n", __func__);
5583 if (!nfs41_sequence_done(task, res))
5586 if (nfs41_reclaim_complete_handle_errors(task, clp) == -EAGAIN) {
5587 rpc_restart_call_prepare(task);
5590 dprintk("<-- %s\n", __func__);
5593 static void nfs4_free_reclaim_complete_data(void *data)
5595 struct nfs4_reclaim_complete_data *calldata = data;
5600 static const struct rpc_call_ops nfs4_reclaim_complete_call_ops = {
5601 .rpc_call_prepare = nfs4_reclaim_complete_prepare,
5602 .rpc_call_done = nfs4_reclaim_complete_done,
5603 .rpc_release = nfs4_free_reclaim_complete_data,
5607 * Issue a global reclaim complete.
5609 static int nfs41_proc_reclaim_complete(struct nfs_client *clp)
5611 struct nfs4_reclaim_complete_data *calldata;
5612 struct rpc_task *task;
5613 struct rpc_message msg = {
5614 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RECLAIM_COMPLETE],
5616 struct rpc_task_setup task_setup_data = {
5617 .rpc_client = clp->cl_rpcclient,
5618 .rpc_message = &msg,
5619 .callback_ops = &nfs4_reclaim_complete_call_ops,
5620 .flags = RPC_TASK_ASYNC,
5622 int status = -ENOMEM;
5624 dprintk("--> %s\n", __func__);
5625 calldata = kzalloc(sizeof(*calldata), GFP_NOFS);
5626 if (calldata == NULL)
5628 calldata->clp = clp;
5629 calldata->arg.one_fs = 0;
5631 msg.rpc_argp = &calldata->arg;
5632 msg.rpc_resp = &calldata->res;
5633 task_setup_data.callback_data = calldata;
5634 task = rpc_run_task(&task_setup_data);
5636 status = PTR_ERR(task);
5639 status = nfs4_wait_for_completion_rpc_task(task);
5641 status = task->tk_status;
5645 dprintk("<-- %s status=%d\n", __func__, status);
5650 nfs4_layoutget_prepare(struct rpc_task *task, void *calldata)
5652 struct nfs4_layoutget *lgp = calldata;
5653 struct nfs_server *server = NFS_SERVER(lgp->args.inode);
5655 dprintk("--> %s\n", __func__);
5656 /* Note the is a race here, where a CB_LAYOUTRECALL can come in
5657 * right now covering the LAYOUTGET we are about to send.
5658 * However, that is not so catastrophic, and there seems
5659 * to be no way to prevent it completely.
5661 if (nfs4_setup_sequence(server, &lgp->args.seq_args,
5662 &lgp->res.seq_res, 0, task))
5664 if (pnfs_choose_layoutget_stateid(&lgp->args.stateid,
5665 NFS_I(lgp->args.inode)->layout,
5666 lgp->args.ctx->state)) {
5667 rpc_exit(task, NFS4_OK);
5670 rpc_call_start(task);
5673 static void nfs4_layoutget_done(struct rpc_task *task, void *calldata)
5675 struct nfs4_layoutget *lgp = calldata;
5676 struct nfs_server *server = NFS_SERVER(lgp->args.inode);
5678 dprintk("--> %s\n", __func__);
5680 if (!nfs4_sequence_done(task, &lgp->res.seq_res))
5683 switch (task->tk_status) {
5686 case -NFS4ERR_LAYOUTTRYLATER:
5687 case -NFS4ERR_RECALLCONFLICT:
5688 task->tk_status = -NFS4ERR_DELAY;
5691 if (nfs4_async_handle_error(task, server, NULL) == -EAGAIN) {
5692 rpc_restart_call_prepare(task);
5696 dprintk("<-- %s\n", __func__);
5699 static void nfs4_layoutget_release(void *calldata)
5701 struct nfs4_layoutget *lgp = calldata;
5703 dprintk("--> %s\n", __func__);
5704 put_nfs_open_context(lgp->args.ctx);
5706 dprintk("<-- %s\n", __func__);
5709 static const struct rpc_call_ops nfs4_layoutget_call_ops = {
5710 .rpc_call_prepare = nfs4_layoutget_prepare,
5711 .rpc_call_done = nfs4_layoutget_done,
5712 .rpc_release = nfs4_layoutget_release,
5715 int nfs4_proc_layoutget(struct nfs4_layoutget *lgp)
5717 struct nfs_server *server = NFS_SERVER(lgp->args.inode);
5718 struct rpc_task *task;
5719 struct rpc_message msg = {
5720 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTGET],
5721 .rpc_argp = &lgp->args,
5722 .rpc_resp = &lgp->res,
5724 struct rpc_task_setup task_setup_data = {
5725 .rpc_client = server->client,
5726 .rpc_message = &msg,
5727 .callback_ops = &nfs4_layoutget_call_ops,
5728 .callback_data = lgp,
5729 .flags = RPC_TASK_ASYNC,
5733 dprintk("--> %s\n", __func__);
5735 lgp->res.layoutp = &lgp->args.layout;
5736 lgp->res.seq_res.sr_slot = NULL;
5737 task = rpc_run_task(&task_setup_data);
5739 return PTR_ERR(task);
5740 status = nfs4_wait_for_completion_rpc_task(task);
5742 status = task->tk_status;
5744 status = pnfs_layout_process(lgp);
5746 dprintk("<-- %s status=%d\n", __func__, status);
5751 nfs4_layoutreturn_prepare(struct rpc_task *task, void *calldata)
5753 struct nfs4_layoutreturn *lrp = calldata;
5755 dprintk("--> %s\n", __func__);
5756 if (nfs41_setup_sequence(lrp->clp->cl_session, &lrp->args.seq_args,
5757 &lrp->res.seq_res, 0, task))
5759 rpc_call_start(task);
5762 static void nfs4_layoutreturn_done(struct rpc_task *task, void *calldata)
5764 struct nfs4_layoutreturn *lrp = calldata;
5765 struct nfs_server *server;
5766 struct pnfs_layout_hdr *lo = lrp->args.layout;
5768 dprintk("--> %s\n", __func__);
5770 if (!nfs4_sequence_done(task, &lrp->res.seq_res))
5773 server = NFS_SERVER(lrp->args.inode);
5774 if (nfs4_async_handle_error(task, server, NULL) == -EAGAIN) {
5775 rpc_restart_call_prepare(task);
5778 spin_lock(&lo->plh_inode->i_lock);
5779 if (task->tk_status == 0) {
5780 if (lrp->res.lrs_present) {
5781 pnfs_set_layout_stateid(lo, &lrp->res.stateid, true);
5783 BUG_ON(!list_empty(&lo->plh_segs));
5785 lo->plh_block_lgets--;
5786 spin_unlock(&lo->plh_inode->i_lock);
5787 dprintk("<-- %s\n", __func__);
5790 static void nfs4_layoutreturn_release(void *calldata)
5792 struct nfs4_layoutreturn *lrp = calldata;
5794 dprintk("--> %s\n", __func__);
5795 put_layout_hdr(lrp->args.layout);
5797 dprintk("<-- %s\n", __func__);
5800 static const struct rpc_call_ops nfs4_layoutreturn_call_ops = {
5801 .rpc_call_prepare = nfs4_layoutreturn_prepare,
5802 .rpc_call_done = nfs4_layoutreturn_done,
5803 .rpc_release = nfs4_layoutreturn_release,
5806 int nfs4_proc_layoutreturn(struct nfs4_layoutreturn *lrp)
5808 struct rpc_task *task;
5809 struct rpc_message msg = {
5810 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTRETURN],
5811 .rpc_argp = &lrp->args,
5812 .rpc_resp = &lrp->res,
5814 struct rpc_task_setup task_setup_data = {
5815 .rpc_client = lrp->clp->cl_rpcclient,
5816 .rpc_message = &msg,
5817 .callback_ops = &nfs4_layoutreturn_call_ops,
5818 .callback_data = lrp,
5822 dprintk("--> %s\n", __func__);
5823 task = rpc_run_task(&task_setup_data);
5825 return PTR_ERR(task);
5826 status = task->tk_status;
5827 dprintk("<-- %s status=%d\n", __func__, status);
5833 * Retrieve the list of Data Server devices from the MDS.
5835 static int _nfs4_getdevicelist(struct nfs_server *server,
5836 const struct nfs_fh *fh,
5837 struct pnfs_devicelist *devlist)
5839 struct nfs4_getdevicelist_args args = {
5841 .layoutclass = server->pnfs_curr_ld->id,
5843 struct nfs4_getdevicelist_res res = {
5846 struct rpc_message msg = {
5847 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETDEVICELIST],
5853 dprintk("--> %s\n", __func__);
5854 status = nfs4_call_sync(server->client, server, &msg, &args.seq_args,
5856 dprintk("<-- %s status=%d\n", __func__, status);
5860 int nfs4_proc_getdevicelist(struct nfs_server *server,
5861 const struct nfs_fh *fh,
5862 struct pnfs_devicelist *devlist)
5864 struct nfs4_exception exception = { };
5868 err = nfs4_handle_exception(server,
5869 _nfs4_getdevicelist(server, fh, devlist),
5871 } while (exception.retry);
5873 dprintk("%s: err=%d, num_devs=%u\n", __func__,
5874 err, devlist->num_devs);
5878 EXPORT_SYMBOL_GPL(nfs4_proc_getdevicelist);
5881 _nfs4_proc_getdeviceinfo(struct nfs_server *server, struct pnfs_device *pdev)
5883 struct nfs4_getdeviceinfo_args args = {
5886 struct nfs4_getdeviceinfo_res res = {
5889 struct rpc_message msg = {
5890 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETDEVICEINFO],
5896 dprintk("--> %s\n", __func__);
5897 status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0);
5898 dprintk("<-- %s status=%d\n", __func__, status);
5903 int nfs4_proc_getdeviceinfo(struct nfs_server *server, struct pnfs_device *pdev)
5905 struct nfs4_exception exception = { };
5909 err = nfs4_handle_exception(server,
5910 _nfs4_proc_getdeviceinfo(server, pdev),
5912 } while (exception.retry);
5915 EXPORT_SYMBOL_GPL(nfs4_proc_getdeviceinfo);
5917 static void nfs4_layoutcommit_prepare(struct rpc_task *task, void *calldata)
5919 struct nfs4_layoutcommit_data *data = calldata;
5920 struct nfs_server *server = NFS_SERVER(data->args.inode);
5922 if (nfs4_setup_sequence(server, &data->args.seq_args,
5923 &data->res.seq_res, 1, task))
5925 rpc_call_start(task);
5929 nfs4_layoutcommit_done(struct rpc_task *task, void *calldata)
5931 struct nfs4_layoutcommit_data *data = calldata;
5932 struct nfs_server *server = NFS_SERVER(data->args.inode);
5934 if (!nfs4_sequence_done(task, &data->res.seq_res))
5937 switch (task->tk_status) { /* Just ignore these failures */
5938 case NFS4ERR_DELEG_REVOKED: /* layout was recalled */
5939 case NFS4ERR_BADIOMODE: /* no IOMODE_RW layout for range */
5940 case NFS4ERR_BADLAYOUT: /* no layout */
5941 case NFS4ERR_GRACE: /* loca_recalim always false */
5942 task->tk_status = 0;
5945 if (nfs4_async_handle_error(task, server, NULL) == -EAGAIN) {
5946 rpc_restart_call_prepare(task);
5950 if (task->tk_status == 0)
5951 nfs_post_op_update_inode_force_wcc(data->args.inode,
5955 static void nfs4_layoutcommit_release(void *calldata)
5957 struct nfs4_layoutcommit_data *data = calldata;
5958 struct pnfs_layout_segment *lseg, *tmp;
5959 unsigned long *bitlock = &NFS_I(data->args.inode)->flags;
5961 pnfs_cleanup_layoutcommit(data);
5962 /* Matched by references in pnfs_set_layoutcommit */
5963 list_for_each_entry_safe(lseg, tmp, &data->lseg_list, pls_lc_list) {
5964 list_del_init(&lseg->pls_lc_list);
5965 if (test_and_clear_bit(NFS_LSEG_LAYOUTCOMMIT,
5970 clear_bit_unlock(NFS_INO_LAYOUTCOMMITTING, bitlock);
5971 smp_mb__after_clear_bit();
5972 wake_up_bit(bitlock, NFS_INO_LAYOUTCOMMITTING);
5974 put_rpccred(data->cred);
5978 static const struct rpc_call_ops nfs4_layoutcommit_ops = {
5979 .rpc_call_prepare = nfs4_layoutcommit_prepare,
5980 .rpc_call_done = nfs4_layoutcommit_done,
5981 .rpc_release = nfs4_layoutcommit_release,
5985 nfs4_proc_layoutcommit(struct nfs4_layoutcommit_data *data, bool sync)
5987 struct rpc_message msg = {
5988 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTCOMMIT],
5989 .rpc_argp = &data->args,
5990 .rpc_resp = &data->res,
5991 .rpc_cred = data->cred,
5993 struct rpc_task_setup task_setup_data = {
5994 .task = &data->task,
5995 .rpc_client = NFS_CLIENT(data->args.inode),
5996 .rpc_message = &msg,
5997 .callback_ops = &nfs4_layoutcommit_ops,
5998 .callback_data = data,
5999 .flags = RPC_TASK_ASYNC,
6001 struct rpc_task *task;
6004 dprintk("NFS: %4d initiating layoutcommit call. sync %d "
6005 "lbw: %llu inode %lu\n",
6006 data->task.tk_pid, sync,
6007 data->args.lastbytewritten,
6008 data->args.inode->i_ino);
6010 task = rpc_run_task(&task_setup_data);
6012 return PTR_ERR(task);
6015 status = nfs4_wait_for_completion_rpc_task(task);
6018 status = task->tk_status;
6020 dprintk("%s: status %d\n", __func__, status);
6026 _nfs41_proc_secinfo_no_name(struct nfs_server *server, struct nfs_fh *fhandle,
6027 struct nfs_fsinfo *info, struct nfs4_secinfo_flavors *flavors)
6029 struct nfs41_secinfo_no_name_args args = {
6030 .style = SECINFO_STYLE_CURRENT_FH,
6032 struct nfs4_secinfo_res res = {
6035 struct rpc_message msg = {
6036 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SECINFO_NO_NAME],
6040 return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0);
6044 nfs41_proc_secinfo_no_name(struct nfs_server *server, struct nfs_fh *fhandle,
6045 struct nfs_fsinfo *info, struct nfs4_secinfo_flavors *flavors)
6047 struct nfs4_exception exception = { };
6050 err = _nfs41_proc_secinfo_no_name(server, fhandle, info, flavors);
6053 case -NFS4ERR_WRONGSEC:
6054 case -NFS4ERR_NOTSUPP:
6057 err = nfs4_handle_exception(server, err, &exception);
6059 } while (exception.retry);
6064 nfs41_find_root_sec(struct nfs_server *server, struct nfs_fh *fhandle,
6065 struct nfs_fsinfo *info)
6069 rpc_authflavor_t flavor;
6070 struct nfs4_secinfo_flavors *flavors;
6072 page = alloc_page(GFP_KERNEL);
6078 flavors = page_address(page);
6079 err = nfs41_proc_secinfo_no_name(server, fhandle, info, flavors);
6082 * Fall back on "guess and check" method if
6083 * the server doesn't support SECINFO_NO_NAME
6085 if (err == -NFS4ERR_WRONGSEC || err == -NFS4ERR_NOTSUPP) {
6086 err = nfs4_find_root_sec(server, fhandle, info);
6092 flavor = nfs_find_best_sec(flavors);
6094 err = nfs4_lookup_root_sec(server, fhandle, info, flavor);
6103 static int _nfs41_test_stateid(struct nfs_server *server, struct nfs4_state *state)
6106 struct nfs41_test_stateid_args args = {
6107 .stateid = &state->stateid,
6109 struct nfs41_test_stateid_res res;
6110 struct rpc_message msg = {
6111 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_TEST_STATEID],
6115 args.seq_args.sa_session = res.seq_res.sr_session = NULL;
6116 status = nfs4_call_sync_sequence(server->client, server, &msg, &args.seq_args, &res.seq_res, 0, 1);
6120 static int nfs41_test_stateid(struct nfs_server *server, struct nfs4_state *state)
6122 struct nfs4_exception exception = { };
6125 err = nfs4_handle_exception(server,
6126 _nfs41_test_stateid(server, state),
6128 } while (exception.retry);
6132 static int _nfs4_free_stateid(struct nfs_server *server, struct nfs4_state *state)
6135 struct nfs41_free_stateid_args args = {
6136 .stateid = &state->stateid,
6138 struct nfs41_free_stateid_res res;
6139 struct rpc_message msg = {
6140 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FREE_STATEID],
6145 args.seq_args.sa_session = res.seq_res.sr_session = NULL;
6146 status = nfs4_call_sync_sequence(server->client, server, &msg, &args.seq_args, &res.seq_res, 0, 1);
6150 static int nfs41_free_stateid(struct nfs_server *server, struct nfs4_state *state)
6152 struct nfs4_exception exception = { };
6155 err = nfs4_handle_exception(server,
6156 _nfs4_free_stateid(server, state),
6158 } while (exception.retry);
6161 #endif /* CONFIG_NFS_V4_1 */
6163 struct nfs4_state_recovery_ops nfs40_reboot_recovery_ops = {
6164 .owner_flag_bit = NFS_OWNER_RECLAIM_REBOOT,
6165 .state_flag_bit = NFS_STATE_RECLAIM_REBOOT,
6166 .recover_open = nfs4_open_reclaim,
6167 .recover_lock = nfs4_lock_reclaim,
6168 .establish_clid = nfs4_init_clientid,
6169 .get_clid_cred = nfs4_get_setclientid_cred,
6172 #if defined(CONFIG_NFS_V4_1)
6173 struct nfs4_state_recovery_ops nfs41_reboot_recovery_ops = {
6174 .owner_flag_bit = NFS_OWNER_RECLAIM_REBOOT,
6175 .state_flag_bit = NFS_STATE_RECLAIM_REBOOT,
6176 .recover_open = nfs4_open_reclaim,
6177 .recover_lock = nfs4_lock_reclaim,
6178 .establish_clid = nfs41_init_clientid,
6179 .get_clid_cred = nfs4_get_exchange_id_cred,
6180 .reclaim_complete = nfs41_proc_reclaim_complete,
6182 #endif /* CONFIG_NFS_V4_1 */
6184 struct nfs4_state_recovery_ops nfs40_nograce_recovery_ops = {
6185 .owner_flag_bit = NFS_OWNER_RECLAIM_NOGRACE,
6186 .state_flag_bit = NFS_STATE_RECLAIM_NOGRACE,
6187 .recover_open = nfs4_open_expired,
6188 .recover_lock = nfs4_lock_expired,
6189 .establish_clid = nfs4_init_clientid,
6190 .get_clid_cred = nfs4_get_setclientid_cred,
6193 #if defined(CONFIG_NFS_V4_1)
6194 struct nfs4_state_recovery_ops nfs41_nograce_recovery_ops = {
6195 .owner_flag_bit = NFS_OWNER_RECLAIM_NOGRACE,
6196 .state_flag_bit = NFS_STATE_RECLAIM_NOGRACE,
6197 .recover_open = nfs41_open_expired,
6198 .recover_lock = nfs41_lock_expired,
6199 .establish_clid = nfs41_init_clientid,
6200 .get_clid_cred = nfs4_get_exchange_id_cred,
6202 #endif /* CONFIG_NFS_V4_1 */
6204 struct nfs4_state_maintenance_ops nfs40_state_renewal_ops = {
6205 .sched_state_renewal = nfs4_proc_async_renew,
6206 .get_state_renewal_cred_locked = nfs4_get_renew_cred_locked,
6207 .renew_lease = nfs4_proc_renew,
6210 #if defined(CONFIG_NFS_V4_1)
6211 struct nfs4_state_maintenance_ops nfs41_state_renewal_ops = {
6212 .sched_state_renewal = nfs41_proc_async_sequence,
6213 .get_state_renewal_cred_locked = nfs4_get_machine_cred_locked,
6214 .renew_lease = nfs4_proc_sequence,
6218 static const struct nfs4_minor_version_ops nfs_v4_0_minor_ops = {
6220 .call_sync = _nfs4_call_sync,
6221 .validate_stateid = nfs4_validate_delegation_stateid,
6222 .find_root_sec = nfs4_find_root_sec,
6223 .reboot_recovery_ops = &nfs40_reboot_recovery_ops,
6224 .nograce_recovery_ops = &nfs40_nograce_recovery_ops,
6225 .state_renewal_ops = &nfs40_state_renewal_ops,
6228 #if defined(CONFIG_NFS_V4_1)
6229 static const struct nfs4_minor_version_ops nfs_v4_1_minor_ops = {
6231 .call_sync = _nfs4_call_sync_session,
6232 .validate_stateid = nfs41_validate_delegation_stateid,
6233 .find_root_sec = nfs41_find_root_sec,
6234 .reboot_recovery_ops = &nfs41_reboot_recovery_ops,
6235 .nograce_recovery_ops = &nfs41_nograce_recovery_ops,
6236 .state_renewal_ops = &nfs41_state_renewal_ops,
6240 const struct nfs4_minor_version_ops *nfs_v4_minor_ops[] = {
6241 [0] = &nfs_v4_0_minor_ops,
6242 #if defined(CONFIG_NFS_V4_1)
6243 [1] = &nfs_v4_1_minor_ops,
6247 static const struct inode_operations nfs4_file_inode_operations = {
6248 .permission = nfs_permission,
6249 .getattr = nfs_getattr,
6250 .setattr = nfs_setattr,
6251 .getxattr = generic_getxattr,
6252 .setxattr = generic_setxattr,
6253 .listxattr = generic_listxattr,
6254 .removexattr = generic_removexattr,
6257 const struct nfs_rpc_ops nfs_v4_clientops = {
6258 .version = 4, /* protocol version */
6259 .dentry_ops = &nfs4_dentry_operations,
6260 .dir_inode_ops = &nfs4_dir_inode_operations,
6261 .file_inode_ops = &nfs4_file_inode_operations,
6262 .file_ops = &nfs4_file_operations,
6263 .getroot = nfs4_proc_get_root,
6264 .getattr = nfs4_proc_getattr,
6265 .setattr = nfs4_proc_setattr,
6266 .lookup = nfs4_proc_lookup,
6267 .access = nfs4_proc_access,
6268 .readlink = nfs4_proc_readlink,
6269 .create = nfs4_proc_create,
6270 .remove = nfs4_proc_remove,
6271 .unlink_setup = nfs4_proc_unlink_setup,
6272 .unlink_done = nfs4_proc_unlink_done,
6273 .rename = nfs4_proc_rename,
6274 .rename_setup = nfs4_proc_rename_setup,
6275 .rename_done = nfs4_proc_rename_done,
6276 .link = nfs4_proc_link,
6277 .symlink = nfs4_proc_symlink,
6278 .mkdir = nfs4_proc_mkdir,
6279 .rmdir = nfs4_proc_remove,
6280 .readdir = nfs4_proc_readdir,
6281 .mknod = nfs4_proc_mknod,
6282 .statfs = nfs4_proc_statfs,
6283 .fsinfo = nfs4_proc_fsinfo,
6284 .pathconf = nfs4_proc_pathconf,
6285 .set_capabilities = nfs4_server_capabilities,
6286 .decode_dirent = nfs4_decode_dirent,
6287 .read_setup = nfs4_proc_read_setup,
6288 .read_done = nfs4_read_done,
6289 .write_setup = nfs4_proc_write_setup,
6290 .write_done = nfs4_write_done,
6291 .commit_setup = nfs4_proc_commit_setup,
6292 .commit_done = nfs4_commit_done,
6293 .lock = nfs4_proc_lock,
6294 .clear_acl_cache = nfs4_zap_acl_attr,
6295 .close_context = nfs4_close_context,
6296 .open_context = nfs4_atomic_open,
6297 .init_client = nfs4_init_client,
6298 .secinfo = nfs4_proc_secinfo,
6301 static const struct xattr_handler nfs4_xattr_nfs4_acl_handler = {
6302 .prefix = XATTR_NAME_NFSV4_ACL,
6303 .list = nfs4_xattr_list_nfs4_acl,
6304 .get = nfs4_xattr_get_nfs4_acl,
6305 .set = nfs4_xattr_set_nfs4_acl,
6308 const struct xattr_handler *nfs4_xattr_handlers[] = {
6309 &nfs4_xattr_nfs4_acl_handler,