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/slab.h>
43 #include <linux/sunrpc/clnt.h>
44 #include <linux/sunrpc/gss_api.h>
45 #include <linux/nfs.h>
46 #include <linux/nfs4.h>
47 #include <linux/nfs_fs.h>
48 #include <linux/nfs_page.h>
49 #include <linux/nfs_mount.h>
50 #include <linux/namei.h>
51 #include <linux/mount.h>
52 #include <linux/module.h>
53 #include <linux/sunrpc/bc_xprt.h>
54 #include <linux/xattr.h>
55 #include <linux/utsname.h>
58 #include "delegation.h"
64 #define NFSDBG_FACILITY NFSDBG_PROC
66 #define NFS4_POLL_RETRY_MIN (HZ/10)
67 #define NFS4_POLL_RETRY_MAX (15*HZ)
69 #define NFS4_MAX_LOOP_ON_RECOVER (10)
72 static int _nfs4_proc_open(struct nfs4_opendata *data);
73 static int _nfs4_recover_proc_open(struct nfs4_opendata *data);
74 static int nfs4_do_fsinfo(struct nfs_server *, struct nfs_fh *, struct nfs_fsinfo *);
75 static int nfs4_async_handle_error(struct rpc_task *, const struct nfs_server *, struct nfs4_state *);
76 static int _nfs4_proc_lookup(struct rpc_clnt *client, struct inode *dir,
77 const struct qstr *name, struct nfs_fh *fhandle,
78 struct nfs_fattr *fattr);
79 static int _nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fattr *fattr);
80 static int nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred,
81 struct nfs_fattr *fattr, struct iattr *sattr,
82 struct nfs4_state *state);
83 #ifdef CONFIG_NFS_V4_1
84 static int nfs41_test_stateid(struct nfs_server *, struct nfs4_state *);
85 static int nfs41_free_stateid(struct nfs_server *, struct nfs4_state *);
87 /* Prevent leaks of NFSv4 errors into userland */
88 static int nfs4_map_errors(int err)
93 case -NFS4ERR_RESOURCE:
95 case -NFS4ERR_WRONGSEC:
97 case -NFS4ERR_BADOWNER:
98 case -NFS4ERR_BADNAME:
101 dprintk("%s could not handle NFSv4 error %d\n",
109 * This is our standard bitmap for GETATTR requests.
111 const u32 nfs4_fattr_bitmap[2] = {
113 | FATTR4_WORD0_CHANGE
116 | FATTR4_WORD0_FILEID,
118 | FATTR4_WORD1_NUMLINKS
120 | FATTR4_WORD1_OWNER_GROUP
121 | FATTR4_WORD1_RAWDEV
122 | FATTR4_WORD1_SPACE_USED
123 | FATTR4_WORD1_TIME_ACCESS
124 | FATTR4_WORD1_TIME_METADATA
125 | FATTR4_WORD1_TIME_MODIFY
128 const u32 nfs4_statfs_bitmap[2] = {
129 FATTR4_WORD0_FILES_AVAIL
130 | FATTR4_WORD0_FILES_FREE
131 | FATTR4_WORD0_FILES_TOTAL,
132 FATTR4_WORD1_SPACE_AVAIL
133 | FATTR4_WORD1_SPACE_FREE
134 | FATTR4_WORD1_SPACE_TOTAL
137 const u32 nfs4_pathconf_bitmap[2] = {
139 | FATTR4_WORD0_MAXNAME,
143 const u32 nfs4_fsinfo_bitmap[3] = { FATTR4_WORD0_MAXFILESIZE
144 | FATTR4_WORD0_MAXREAD
145 | FATTR4_WORD0_MAXWRITE
146 | FATTR4_WORD0_LEASE_TIME,
147 FATTR4_WORD1_TIME_DELTA
148 | FATTR4_WORD1_FS_LAYOUT_TYPES,
149 FATTR4_WORD2_LAYOUT_BLKSIZE
152 const u32 nfs4_fs_locations_bitmap[2] = {
154 | FATTR4_WORD0_CHANGE
157 | FATTR4_WORD0_FILEID
158 | FATTR4_WORD0_FS_LOCATIONS,
160 | FATTR4_WORD1_NUMLINKS
162 | FATTR4_WORD1_OWNER_GROUP
163 | FATTR4_WORD1_RAWDEV
164 | FATTR4_WORD1_SPACE_USED
165 | FATTR4_WORD1_TIME_ACCESS
166 | FATTR4_WORD1_TIME_METADATA
167 | FATTR4_WORD1_TIME_MODIFY
168 | FATTR4_WORD1_MOUNTED_ON_FILEID
171 static void nfs4_setup_readdir(u64 cookie, __be32 *verifier, struct dentry *dentry,
172 struct nfs4_readdir_arg *readdir)
176 BUG_ON(readdir->count < 80);
178 readdir->cookie = cookie;
179 memcpy(&readdir->verifier, verifier, sizeof(readdir->verifier));
184 memset(&readdir->verifier, 0, sizeof(readdir->verifier));
189 * NFSv4 servers do not return entries for '.' and '..'
190 * Therefore, we fake these entries here. We let '.'
191 * have cookie 0 and '..' have cookie 1. Note that
192 * when talking to the server, we always send cookie 0
195 start = p = kmap_atomic(*readdir->pages, KM_USER0);
198 *p++ = xdr_one; /* next */
199 *p++ = xdr_zero; /* cookie, first word */
200 *p++ = xdr_one; /* cookie, second word */
201 *p++ = xdr_one; /* entry len */
202 memcpy(p, ".\0\0\0", 4); /* entry */
204 *p++ = xdr_one; /* bitmap length */
205 *p++ = htonl(FATTR4_WORD0_FILEID); /* bitmap */
206 *p++ = htonl(8); /* attribute buffer length */
207 p = xdr_encode_hyper(p, NFS_FILEID(dentry->d_inode));
210 *p++ = xdr_one; /* next */
211 *p++ = xdr_zero; /* cookie, first word */
212 *p++ = xdr_two; /* cookie, second word */
213 *p++ = xdr_two; /* entry len */
214 memcpy(p, "..\0\0", 4); /* entry */
216 *p++ = xdr_one; /* bitmap length */
217 *p++ = htonl(FATTR4_WORD0_FILEID); /* bitmap */
218 *p++ = htonl(8); /* attribute buffer length */
219 p = xdr_encode_hyper(p, NFS_FILEID(dentry->d_parent->d_inode));
221 readdir->pgbase = (char *)p - (char *)start;
222 readdir->count -= readdir->pgbase;
223 kunmap_atomic(start, KM_USER0);
226 static int nfs4_wait_clnt_recover(struct nfs_client *clp)
232 res = wait_on_bit(&clp->cl_state, NFS4CLNT_MANAGER_RUNNING,
233 nfs_wait_bit_killable, TASK_KILLABLE);
237 static int nfs4_delay(struct rpc_clnt *clnt, long *timeout)
244 *timeout = NFS4_POLL_RETRY_MIN;
245 if (*timeout > NFS4_POLL_RETRY_MAX)
246 *timeout = NFS4_POLL_RETRY_MAX;
247 schedule_timeout_killable(*timeout);
248 if (fatal_signal_pending(current))
254 /* This is the error handling routine for processes that are allowed
257 static int nfs4_handle_exception(struct nfs_server *server, int errorcode, struct nfs4_exception *exception)
259 struct nfs_client *clp = server->nfs_client;
260 struct nfs4_state *state = exception->state;
263 exception->retry = 0;
267 case -NFS4ERR_ADMIN_REVOKED:
268 case -NFS4ERR_BAD_STATEID:
269 case -NFS4ERR_OPENMODE:
272 nfs4_schedule_stateid_recovery(server, state);
273 goto wait_on_recovery;
274 case -NFS4ERR_EXPIRED:
276 nfs4_schedule_stateid_recovery(server, state);
277 case -NFS4ERR_STALE_STATEID:
278 case -NFS4ERR_STALE_CLIENTID:
279 nfs4_schedule_lease_recovery(clp);
280 goto wait_on_recovery;
281 #if defined(CONFIG_NFS_V4_1)
282 case -NFS4ERR_BADSESSION:
283 case -NFS4ERR_BADSLOT:
284 case -NFS4ERR_BAD_HIGH_SLOT:
285 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION:
286 case -NFS4ERR_DEADSESSION:
287 case -NFS4ERR_SEQ_FALSE_RETRY:
288 case -NFS4ERR_SEQ_MISORDERED:
289 dprintk("%s ERROR: %d Reset session\n", __func__,
291 nfs4_schedule_session_recovery(clp->cl_session);
292 exception->retry = 1;
294 #endif /* defined(CONFIG_NFS_V4_1) */
295 case -NFS4ERR_FILE_OPEN:
296 if (exception->timeout > HZ) {
297 /* We have retried a decent amount, time to
306 ret = nfs4_delay(server->client, &exception->timeout);
309 case -NFS4ERR_RETRY_UNCACHED_REP:
310 case -NFS4ERR_OLD_STATEID:
311 exception->retry = 1;
313 case -NFS4ERR_BADOWNER:
314 /* The following works around a Linux server bug! */
315 case -NFS4ERR_BADNAME:
316 if (server->caps & NFS_CAP_UIDGID_NOMAP) {
317 server->caps &= ~NFS_CAP_UIDGID_NOMAP;
318 exception->retry = 1;
319 printk(KERN_WARNING "NFS: v4 server %s "
320 "does not accept raw "
322 "Reenabling the idmapper.\n",
323 server->nfs_client->cl_hostname);
326 /* We failed to handle the error */
327 return nfs4_map_errors(ret);
329 ret = nfs4_wait_clnt_recover(clp);
331 exception->retry = 1;
336 static void do_renew_lease(struct nfs_client *clp, unsigned long timestamp)
338 spin_lock(&clp->cl_lock);
339 if (time_before(clp->cl_last_renewal,timestamp))
340 clp->cl_last_renewal = timestamp;
341 spin_unlock(&clp->cl_lock);
344 static void renew_lease(const struct nfs_server *server, unsigned long timestamp)
346 do_renew_lease(server->nfs_client, timestamp);
349 #if defined(CONFIG_NFS_V4_1)
352 * nfs4_free_slot - free a slot and efficiently update slot table.
354 * freeing a slot is trivially done by clearing its respective bit
356 * If the freed slotid equals highest_used_slotid we want to update it
357 * so that the server would be able to size down the slot table if needed,
358 * otherwise we know that the highest_used_slotid is still in use.
359 * When updating highest_used_slotid there may be "holes" in the bitmap
360 * so we need to scan down from highest_used_slotid to 0 looking for the now
361 * highest slotid in use.
362 * If none found, highest_used_slotid is set to -1.
364 * Must be called while holding tbl->slot_tbl_lock
367 nfs4_free_slot(struct nfs4_slot_table *tbl, struct nfs4_slot *free_slot)
369 int free_slotid = free_slot - tbl->slots;
370 int slotid = free_slotid;
372 BUG_ON(slotid < 0 || slotid >= NFS4_MAX_SLOT_TABLE);
373 /* clear used bit in bitmap */
374 __clear_bit(slotid, tbl->used_slots);
376 /* update highest_used_slotid when it is freed */
377 if (slotid == tbl->highest_used_slotid) {
378 slotid = find_last_bit(tbl->used_slots, tbl->max_slots);
379 if (slotid < tbl->max_slots)
380 tbl->highest_used_slotid = slotid;
382 tbl->highest_used_slotid = -1;
384 dprintk("%s: free_slotid %u highest_used_slotid %d\n", __func__,
385 free_slotid, tbl->highest_used_slotid);
389 * Signal state manager thread if session fore channel is drained
391 static void nfs4_check_drain_fc_complete(struct nfs4_session *ses)
393 struct rpc_task *task;
395 if (!test_bit(NFS4_SESSION_DRAINING, &ses->session_state)) {
396 task = rpc_wake_up_next(&ses->fc_slot_table.slot_tbl_waitq);
398 rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED);
402 if (ses->fc_slot_table.highest_used_slotid != -1)
405 dprintk("%s COMPLETE: Session Fore Channel Drained\n", __func__);
406 complete(&ses->fc_slot_table.complete);
410 * Signal state manager thread if session back channel is drained
412 void nfs4_check_drain_bc_complete(struct nfs4_session *ses)
414 if (!test_bit(NFS4_SESSION_DRAINING, &ses->session_state) ||
415 ses->bc_slot_table.highest_used_slotid != -1)
417 dprintk("%s COMPLETE: Session Back Channel Drained\n", __func__);
418 complete(&ses->bc_slot_table.complete);
421 static void nfs41_sequence_free_slot(struct nfs4_sequence_res *res)
423 struct nfs4_slot_table *tbl;
425 tbl = &res->sr_session->fc_slot_table;
427 /* just wake up the next guy waiting since
428 * we may have not consumed a slot after all */
429 dprintk("%s: No slot\n", __func__);
433 spin_lock(&tbl->slot_tbl_lock);
434 nfs4_free_slot(tbl, res->sr_slot);
435 nfs4_check_drain_fc_complete(res->sr_session);
436 spin_unlock(&tbl->slot_tbl_lock);
440 static int nfs41_sequence_done(struct rpc_task *task, struct nfs4_sequence_res *res)
442 unsigned long timestamp;
443 struct nfs_client *clp;
446 * sr_status remains 1 if an RPC level error occurred. The server
447 * may or may not have processed the sequence operation..
448 * Proceed as if the server received and processed the sequence
451 if (res->sr_status == 1)
452 res->sr_status = NFS_OK;
454 /* don't increment the sequence number if the task wasn't sent */
455 if (!RPC_WAS_SENT(task))
458 /* Check the SEQUENCE operation status */
459 switch (res->sr_status) {
461 /* Update the slot's sequence and clientid lease timer */
462 ++res->sr_slot->seq_nr;
463 timestamp = res->sr_renewal_time;
464 clp = res->sr_session->clp;
465 do_renew_lease(clp, timestamp);
466 /* Check sequence flags */
467 if (res->sr_status_flags != 0)
468 nfs4_schedule_lease_recovery(clp);
471 /* The server detected a resend of the RPC call and
472 * returned NFS4ERR_DELAY as per Section 2.10.6.2
475 dprintk("%s: slot=%td seq=%d: Operation in progress\n",
477 res->sr_slot - res->sr_session->fc_slot_table.slots,
478 res->sr_slot->seq_nr);
481 /* Just update the slot sequence no. */
482 ++res->sr_slot->seq_nr;
485 /* The session may be reset by one of the error handlers. */
486 dprintk("%s: Error %d free the slot \n", __func__, res->sr_status);
487 nfs41_sequence_free_slot(res);
490 if (!rpc_restart_call(task))
492 rpc_delay(task, NFS4_POLL_RETRY_MAX);
496 static int nfs4_sequence_done(struct rpc_task *task,
497 struct nfs4_sequence_res *res)
499 if (res->sr_session == NULL)
501 return nfs41_sequence_done(task, res);
505 * nfs4_find_slot - efficiently look for a free slot
507 * nfs4_find_slot looks for an unset bit in the used_slots bitmap.
508 * If found, we mark the slot as used, update the highest_used_slotid,
509 * and respectively set up the sequence operation args.
510 * The slot number is returned if found, or NFS4_MAX_SLOT_TABLE otherwise.
512 * Note: must be called with under the slot_tbl_lock.
515 nfs4_find_slot(struct nfs4_slot_table *tbl)
518 u8 ret_id = NFS4_MAX_SLOT_TABLE;
519 BUILD_BUG_ON((u8)NFS4_MAX_SLOT_TABLE != (int)NFS4_MAX_SLOT_TABLE);
521 dprintk("--> %s used_slots=%04lx highest_used=%d max_slots=%d\n",
522 __func__, tbl->used_slots[0], tbl->highest_used_slotid,
524 slotid = find_first_zero_bit(tbl->used_slots, tbl->max_slots);
525 if (slotid >= tbl->max_slots)
527 __set_bit(slotid, tbl->used_slots);
528 if (slotid > tbl->highest_used_slotid)
529 tbl->highest_used_slotid = slotid;
532 dprintk("<-- %s used_slots=%04lx highest_used=%d slotid=%d \n",
533 __func__, tbl->used_slots[0], tbl->highest_used_slotid, ret_id);
537 int nfs41_setup_sequence(struct nfs4_session *session,
538 struct nfs4_sequence_args *args,
539 struct nfs4_sequence_res *res,
541 struct rpc_task *task)
543 struct nfs4_slot *slot;
544 struct nfs4_slot_table *tbl;
547 dprintk("--> %s\n", __func__);
548 /* slot already allocated? */
549 if (res->sr_slot != NULL)
552 tbl = &session->fc_slot_table;
554 spin_lock(&tbl->slot_tbl_lock);
555 if (test_bit(NFS4_SESSION_DRAINING, &session->session_state) &&
556 !rpc_task_has_priority(task, RPC_PRIORITY_PRIVILEGED)) {
558 * The state manager will wait until the slot table is empty.
559 * Schedule the reset thread
561 rpc_sleep_on(&tbl->slot_tbl_waitq, task, NULL);
562 spin_unlock(&tbl->slot_tbl_lock);
563 dprintk("%s Schedule Session Reset\n", __func__);
567 if (!rpc_queue_empty(&tbl->slot_tbl_waitq) &&
568 !rpc_task_has_priority(task, RPC_PRIORITY_PRIVILEGED)) {
569 rpc_sleep_on(&tbl->slot_tbl_waitq, task, NULL);
570 spin_unlock(&tbl->slot_tbl_lock);
571 dprintk("%s enforce FIFO order\n", __func__);
575 slotid = nfs4_find_slot(tbl);
576 if (slotid == NFS4_MAX_SLOT_TABLE) {
577 rpc_sleep_on(&tbl->slot_tbl_waitq, task, NULL);
578 spin_unlock(&tbl->slot_tbl_lock);
579 dprintk("<-- %s: no free slots\n", __func__);
582 spin_unlock(&tbl->slot_tbl_lock);
584 rpc_task_set_priority(task, RPC_PRIORITY_NORMAL);
585 slot = tbl->slots + slotid;
586 args->sa_session = session;
587 args->sa_slotid = slotid;
588 args->sa_cache_this = cache_reply;
590 dprintk("<-- %s slotid=%d seqid=%d\n", __func__, slotid, slot->seq_nr);
592 res->sr_session = session;
594 res->sr_renewal_time = jiffies;
595 res->sr_status_flags = 0;
597 * sr_status is only set in decode_sequence, and so will remain
598 * set to 1 if an rpc level failure occurs.
603 EXPORT_SYMBOL_GPL(nfs41_setup_sequence);
605 int nfs4_setup_sequence(const struct nfs_server *server,
606 struct nfs4_sequence_args *args,
607 struct nfs4_sequence_res *res,
609 struct rpc_task *task)
611 struct nfs4_session *session = nfs4_get_session(server);
614 if (session == NULL) {
615 args->sa_session = NULL;
616 res->sr_session = NULL;
620 dprintk("--> %s clp %p session %p sr_slot %td\n",
621 __func__, session->clp, session, res->sr_slot ?
622 res->sr_slot - session->fc_slot_table.slots : -1);
624 ret = nfs41_setup_sequence(session, args, res, cache_reply,
627 dprintk("<-- %s status=%d\n", __func__, ret);
631 struct nfs41_call_sync_data {
632 const struct nfs_server *seq_server;
633 struct nfs4_sequence_args *seq_args;
634 struct nfs4_sequence_res *seq_res;
638 static void nfs41_call_sync_prepare(struct rpc_task *task, void *calldata)
640 struct nfs41_call_sync_data *data = calldata;
642 dprintk("--> %s data->seq_server %p\n", __func__, data->seq_server);
644 if (nfs4_setup_sequence(data->seq_server, data->seq_args,
645 data->seq_res, data->cache_reply, task))
647 rpc_call_start(task);
650 static void nfs41_call_priv_sync_prepare(struct rpc_task *task, void *calldata)
652 rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED);
653 nfs41_call_sync_prepare(task, calldata);
656 static void nfs41_call_sync_done(struct rpc_task *task, void *calldata)
658 struct nfs41_call_sync_data *data = calldata;
660 nfs41_sequence_done(task, data->seq_res);
663 struct rpc_call_ops nfs41_call_sync_ops = {
664 .rpc_call_prepare = nfs41_call_sync_prepare,
665 .rpc_call_done = nfs41_call_sync_done,
668 struct rpc_call_ops nfs41_call_priv_sync_ops = {
669 .rpc_call_prepare = nfs41_call_priv_sync_prepare,
670 .rpc_call_done = nfs41_call_sync_done,
673 static int nfs4_call_sync_sequence(struct rpc_clnt *clnt,
674 struct nfs_server *server,
675 struct rpc_message *msg,
676 struct nfs4_sequence_args *args,
677 struct nfs4_sequence_res *res,
682 struct rpc_task *task;
683 struct nfs41_call_sync_data data = {
684 .seq_server = server,
687 .cache_reply = cache_reply,
689 struct rpc_task_setup task_setup = {
692 .callback_ops = &nfs41_call_sync_ops,
693 .callback_data = &data
698 task_setup.callback_ops = &nfs41_call_priv_sync_ops;
699 task = rpc_run_task(&task_setup);
703 ret = task->tk_status;
709 int _nfs4_call_sync_session(struct rpc_clnt *clnt,
710 struct nfs_server *server,
711 struct rpc_message *msg,
712 struct nfs4_sequence_args *args,
713 struct nfs4_sequence_res *res,
716 return nfs4_call_sync_sequence(clnt, server, msg, args, res, cache_reply, 0);
720 static int nfs4_sequence_done(struct rpc_task *task,
721 struct nfs4_sequence_res *res)
725 #endif /* CONFIG_NFS_V4_1 */
727 int _nfs4_call_sync(struct rpc_clnt *clnt,
728 struct nfs_server *server,
729 struct rpc_message *msg,
730 struct nfs4_sequence_args *args,
731 struct nfs4_sequence_res *res,
734 args->sa_session = res->sr_session = NULL;
735 return rpc_call_sync(clnt, msg, 0);
739 int nfs4_call_sync(struct rpc_clnt *clnt,
740 struct nfs_server *server,
741 struct rpc_message *msg,
742 struct nfs4_sequence_args *args,
743 struct nfs4_sequence_res *res,
746 return server->nfs_client->cl_mvops->call_sync(clnt, server, msg,
747 args, res, cache_reply);
750 static void update_changeattr(struct inode *dir, struct nfs4_change_info *cinfo)
752 struct nfs_inode *nfsi = NFS_I(dir);
754 spin_lock(&dir->i_lock);
755 nfsi->cache_validity |= NFS_INO_INVALID_ATTR|NFS_INO_REVAL_PAGECACHE|NFS_INO_INVALID_DATA;
756 if (!cinfo->atomic || cinfo->before != nfsi->change_attr)
757 nfs_force_lookup_revalidate(dir);
758 nfsi->change_attr = cinfo->after;
759 spin_unlock(&dir->i_lock);
762 struct nfs4_opendata {
764 struct nfs_openargs o_arg;
765 struct nfs_openres o_res;
766 struct nfs_open_confirmargs c_arg;
767 struct nfs_open_confirmres c_res;
768 struct nfs_fattr f_attr;
769 struct nfs_fattr dir_attr;
771 struct dentry *dentry;
772 struct nfs4_state_owner *owner;
773 struct nfs4_state *state;
775 unsigned long timestamp;
776 unsigned int rpc_done : 1;
782 static void nfs4_init_opendata_res(struct nfs4_opendata *p)
784 p->o_res.f_attr = &p->f_attr;
785 p->o_res.dir_attr = &p->dir_attr;
786 p->o_res.seqid = p->o_arg.seqid;
787 p->c_res.seqid = p->c_arg.seqid;
788 p->o_res.server = p->o_arg.server;
789 nfs_fattr_init(&p->f_attr);
790 nfs_fattr_init(&p->dir_attr);
793 static struct nfs4_opendata *nfs4_opendata_alloc(struct dentry *dentry,
794 struct nfs4_state_owner *sp, fmode_t fmode, int flags,
795 const struct iattr *attrs,
798 struct dentry *parent = dget_parent(dentry);
799 struct inode *dir = parent->d_inode;
800 struct nfs_server *server = NFS_SERVER(dir);
801 struct nfs4_opendata *p;
803 p = kzalloc(sizeof(*p), gfp_mask);
806 p->o_arg.seqid = nfs_alloc_seqid(&sp->so_seqid, gfp_mask);
807 if (p->o_arg.seqid == NULL)
809 nfs_sb_active(dentry->d_sb);
810 p->dentry = dget(dentry);
813 atomic_inc(&sp->so_count);
814 p->o_arg.fh = NFS_FH(dir);
815 p->o_arg.open_flags = flags;
816 p->o_arg.fmode = fmode & (FMODE_READ|FMODE_WRITE);
817 p->o_arg.clientid = server->nfs_client->cl_clientid;
818 p->o_arg.id = sp->so_owner_id.id;
819 p->o_arg.name = &dentry->d_name;
820 p->o_arg.server = server;
821 p->o_arg.bitmask = server->attr_bitmask;
822 p->o_arg.claim = NFS4_OPEN_CLAIM_NULL;
823 if (flags & O_CREAT) {
826 p->o_arg.u.attrs = &p->attrs;
827 memcpy(&p->attrs, attrs, sizeof(p->attrs));
828 s = (u32 *) p->o_arg.u.verifier.data;
832 p->c_arg.fh = &p->o_res.fh;
833 p->c_arg.stateid = &p->o_res.stateid;
834 p->c_arg.seqid = p->o_arg.seqid;
835 nfs4_init_opendata_res(p);
845 static void nfs4_opendata_free(struct kref *kref)
847 struct nfs4_opendata *p = container_of(kref,
848 struct nfs4_opendata, kref);
849 struct super_block *sb = p->dentry->d_sb;
851 nfs_free_seqid(p->o_arg.seqid);
852 if (p->state != NULL)
853 nfs4_put_open_state(p->state);
854 nfs4_put_state_owner(p->owner);
861 static void nfs4_opendata_put(struct nfs4_opendata *p)
864 kref_put(&p->kref, nfs4_opendata_free);
867 static int nfs4_wait_for_completion_rpc_task(struct rpc_task *task)
871 ret = rpc_wait_for_completion_task(task);
875 static int can_open_cached(struct nfs4_state *state, fmode_t mode, int open_mode)
879 if (open_mode & O_EXCL)
881 switch (mode & (FMODE_READ|FMODE_WRITE)) {
883 ret |= test_bit(NFS_O_RDONLY_STATE, &state->flags) != 0
884 && state->n_rdonly != 0;
887 ret |= test_bit(NFS_O_WRONLY_STATE, &state->flags) != 0
888 && state->n_wronly != 0;
890 case FMODE_READ|FMODE_WRITE:
891 ret |= test_bit(NFS_O_RDWR_STATE, &state->flags) != 0
892 && state->n_rdwr != 0;
898 static int can_open_delegated(struct nfs_delegation *delegation, fmode_t fmode)
900 if ((delegation->type & fmode) != fmode)
902 if (test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags))
904 nfs_mark_delegation_referenced(delegation);
908 static void update_open_stateflags(struct nfs4_state *state, fmode_t fmode)
917 case FMODE_READ|FMODE_WRITE:
920 nfs4_state_set_mode_locked(state, state->state | fmode);
923 static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode)
925 if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0)
926 memcpy(state->stateid.data, stateid->data, sizeof(state->stateid.data));
927 memcpy(state->open_stateid.data, stateid->data, sizeof(state->open_stateid.data));
930 set_bit(NFS_O_RDONLY_STATE, &state->flags);
933 set_bit(NFS_O_WRONLY_STATE, &state->flags);
935 case FMODE_READ|FMODE_WRITE:
936 set_bit(NFS_O_RDWR_STATE, &state->flags);
940 static void nfs_set_open_stateid(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode)
942 write_seqlock(&state->seqlock);
943 nfs_set_open_stateid_locked(state, stateid, fmode);
944 write_sequnlock(&state->seqlock);
947 static void __update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, const nfs4_stateid *deleg_stateid, fmode_t fmode)
950 * Protect the call to nfs4_state_set_mode_locked and
951 * serialise the stateid update
953 write_seqlock(&state->seqlock);
954 if (deleg_stateid != NULL) {
955 memcpy(state->stateid.data, deleg_stateid->data, sizeof(state->stateid.data));
956 set_bit(NFS_DELEGATED_STATE, &state->flags);
958 if (open_stateid != NULL)
959 nfs_set_open_stateid_locked(state, open_stateid, fmode);
960 write_sequnlock(&state->seqlock);
961 spin_lock(&state->owner->so_lock);
962 update_open_stateflags(state, fmode);
963 spin_unlock(&state->owner->so_lock);
966 static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, nfs4_stateid *delegation, fmode_t fmode)
968 struct nfs_inode *nfsi = NFS_I(state->inode);
969 struct nfs_delegation *deleg_cur;
972 fmode &= (FMODE_READ|FMODE_WRITE);
975 deleg_cur = rcu_dereference(nfsi->delegation);
976 if (deleg_cur == NULL)
979 spin_lock(&deleg_cur->lock);
980 if (nfsi->delegation != deleg_cur ||
981 (deleg_cur->type & fmode) != fmode)
982 goto no_delegation_unlock;
984 if (delegation == NULL)
985 delegation = &deleg_cur->stateid;
986 else if (memcmp(deleg_cur->stateid.data, delegation->data, NFS4_STATEID_SIZE) != 0)
987 goto no_delegation_unlock;
989 nfs_mark_delegation_referenced(deleg_cur);
990 __update_open_stateid(state, open_stateid, &deleg_cur->stateid, fmode);
992 no_delegation_unlock:
993 spin_unlock(&deleg_cur->lock);
997 if (!ret && open_stateid != NULL) {
998 __update_open_stateid(state, open_stateid, NULL, fmode);
1006 static void nfs4_return_incompatible_delegation(struct inode *inode, fmode_t fmode)
1008 struct nfs_delegation *delegation;
1011 delegation = rcu_dereference(NFS_I(inode)->delegation);
1012 if (delegation == NULL || (delegation->type & fmode) == fmode) {
1017 nfs_inode_return_delegation(inode);
1020 static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata)
1022 struct nfs4_state *state = opendata->state;
1023 struct nfs_inode *nfsi = NFS_I(state->inode);
1024 struct nfs_delegation *delegation;
1025 int open_mode = opendata->o_arg.open_flags & O_EXCL;
1026 fmode_t fmode = opendata->o_arg.fmode;
1027 nfs4_stateid stateid;
1031 if (can_open_cached(state, fmode, open_mode)) {
1032 spin_lock(&state->owner->so_lock);
1033 if (can_open_cached(state, fmode, open_mode)) {
1034 update_open_stateflags(state, fmode);
1035 spin_unlock(&state->owner->so_lock);
1036 goto out_return_state;
1038 spin_unlock(&state->owner->so_lock);
1041 delegation = rcu_dereference(nfsi->delegation);
1042 if (delegation == NULL ||
1043 !can_open_delegated(delegation, fmode)) {
1047 /* Save the delegation */
1048 memcpy(stateid.data, delegation->stateid.data, sizeof(stateid.data));
1050 ret = nfs_may_open(state->inode, state->owner->so_cred, open_mode);
1055 /* Try to update the stateid using the delegation */
1056 if (update_open_stateid(state, NULL, &stateid, fmode))
1057 goto out_return_state;
1060 return ERR_PTR(ret);
1062 atomic_inc(&state->count);
1066 static struct nfs4_state *nfs4_opendata_to_nfs4_state(struct nfs4_opendata *data)
1068 struct inode *inode;
1069 struct nfs4_state *state = NULL;
1070 struct nfs_delegation *delegation;
1073 if (!data->rpc_done) {
1074 state = nfs4_try_open_cached(data);
1079 if (!(data->f_attr.valid & NFS_ATTR_FATTR))
1081 inode = nfs_fhget(data->dir->d_sb, &data->o_res.fh, &data->f_attr);
1082 ret = PTR_ERR(inode);
1086 state = nfs4_get_open_state(inode, data->owner);
1089 if (data->o_res.delegation_type != 0) {
1090 int delegation_flags = 0;
1093 delegation = rcu_dereference(NFS_I(inode)->delegation);
1095 delegation_flags = delegation->flags;
1097 if ((delegation_flags & 1UL<<NFS_DELEGATION_NEED_RECLAIM) == 0)
1098 nfs_inode_set_delegation(state->inode,
1099 data->owner->so_cred,
1102 nfs_inode_reclaim_delegation(state->inode,
1103 data->owner->so_cred,
1107 update_open_stateid(state, &data->o_res.stateid, NULL,
1115 return ERR_PTR(ret);
1118 static struct nfs_open_context *nfs4_state_find_open_context(struct nfs4_state *state)
1120 struct nfs_inode *nfsi = NFS_I(state->inode);
1121 struct nfs_open_context *ctx;
1123 spin_lock(&state->inode->i_lock);
1124 list_for_each_entry(ctx, &nfsi->open_files, list) {
1125 if (ctx->state != state)
1127 get_nfs_open_context(ctx);
1128 spin_unlock(&state->inode->i_lock);
1131 spin_unlock(&state->inode->i_lock);
1132 return ERR_PTR(-ENOENT);
1135 static struct nfs4_opendata *nfs4_open_recoverdata_alloc(struct nfs_open_context *ctx, struct nfs4_state *state)
1137 struct nfs4_opendata *opendata;
1139 opendata = nfs4_opendata_alloc(ctx->dentry, state->owner, 0, 0, NULL, GFP_NOFS);
1140 if (opendata == NULL)
1141 return ERR_PTR(-ENOMEM);
1142 opendata->state = state;
1143 atomic_inc(&state->count);
1147 static int nfs4_open_recover_helper(struct nfs4_opendata *opendata, fmode_t fmode, struct nfs4_state **res)
1149 struct nfs4_state *newstate;
1152 opendata->o_arg.open_flags = 0;
1153 opendata->o_arg.fmode = fmode;
1154 memset(&opendata->o_res, 0, sizeof(opendata->o_res));
1155 memset(&opendata->c_res, 0, sizeof(opendata->c_res));
1156 nfs4_init_opendata_res(opendata);
1157 ret = _nfs4_recover_proc_open(opendata);
1160 newstate = nfs4_opendata_to_nfs4_state(opendata);
1161 if (IS_ERR(newstate))
1162 return PTR_ERR(newstate);
1163 nfs4_close_state(newstate, fmode);
1168 static int nfs4_open_recover(struct nfs4_opendata *opendata, struct nfs4_state *state)
1170 struct nfs4_state *newstate;
1173 /* memory barrier prior to reading state->n_* */
1174 clear_bit(NFS_DELEGATED_STATE, &state->flags);
1176 if (state->n_rdwr != 0) {
1177 clear_bit(NFS_O_RDWR_STATE, &state->flags);
1178 ret = nfs4_open_recover_helper(opendata, FMODE_READ|FMODE_WRITE, &newstate);
1181 if (newstate != state)
1184 if (state->n_wronly != 0) {
1185 clear_bit(NFS_O_WRONLY_STATE, &state->flags);
1186 ret = nfs4_open_recover_helper(opendata, FMODE_WRITE, &newstate);
1189 if (newstate != state)
1192 if (state->n_rdonly != 0) {
1193 clear_bit(NFS_O_RDONLY_STATE, &state->flags);
1194 ret = nfs4_open_recover_helper(opendata, FMODE_READ, &newstate);
1197 if (newstate != state)
1201 * We may have performed cached opens for all three recoveries.
1202 * Check if we need to update the current stateid.
1204 if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0 &&
1205 memcmp(state->stateid.data, state->open_stateid.data, sizeof(state->stateid.data)) != 0) {
1206 write_seqlock(&state->seqlock);
1207 if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0)
1208 memcpy(state->stateid.data, state->open_stateid.data, sizeof(state->stateid.data));
1209 write_sequnlock(&state->seqlock);
1216 * reclaim state on the server after a reboot.
1218 static int _nfs4_do_open_reclaim(struct nfs_open_context *ctx, struct nfs4_state *state)
1220 struct nfs_delegation *delegation;
1221 struct nfs4_opendata *opendata;
1222 fmode_t delegation_type = 0;
1225 opendata = nfs4_open_recoverdata_alloc(ctx, state);
1226 if (IS_ERR(opendata))
1227 return PTR_ERR(opendata);
1228 opendata->o_arg.claim = NFS4_OPEN_CLAIM_PREVIOUS;
1229 opendata->o_arg.fh = NFS_FH(state->inode);
1231 delegation = rcu_dereference(NFS_I(state->inode)->delegation);
1232 if (delegation != NULL && test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags) != 0)
1233 delegation_type = delegation->type;
1235 opendata->o_arg.u.delegation_type = delegation_type;
1236 status = nfs4_open_recover(opendata, state);
1237 nfs4_opendata_put(opendata);
1241 static int nfs4_do_open_reclaim(struct nfs_open_context *ctx, struct nfs4_state *state)
1243 struct nfs_server *server = NFS_SERVER(state->inode);
1244 struct nfs4_exception exception = { };
1247 err = _nfs4_do_open_reclaim(ctx, state);
1248 if (err != -NFS4ERR_DELAY)
1250 nfs4_handle_exception(server, err, &exception);
1251 } while (exception.retry);
1255 static int nfs4_open_reclaim(struct nfs4_state_owner *sp, struct nfs4_state *state)
1257 struct nfs_open_context *ctx;
1260 ctx = nfs4_state_find_open_context(state);
1262 return PTR_ERR(ctx);
1263 ret = nfs4_do_open_reclaim(ctx, state);
1264 put_nfs_open_context(ctx);
1268 static int _nfs4_open_delegation_recall(struct nfs_open_context *ctx, struct nfs4_state *state, const nfs4_stateid *stateid)
1270 struct nfs4_opendata *opendata;
1273 opendata = nfs4_open_recoverdata_alloc(ctx, state);
1274 if (IS_ERR(opendata))
1275 return PTR_ERR(opendata);
1276 opendata->o_arg.claim = NFS4_OPEN_CLAIM_DELEGATE_CUR;
1277 memcpy(opendata->o_arg.u.delegation.data, stateid->data,
1278 sizeof(opendata->o_arg.u.delegation.data));
1279 ret = nfs4_open_recover(opendata, state);
1280 nfs4_opendata_put(opendata);
1284 int nfs4_open_delegation_recall(struct nfs_open_context *ctx, struct nfs4_state *state, const nfs4_stateid *stateid)
1286 struct nfs4_exception exception = { };
1287 struct nfs_server *server = NFS_SERVER(state->inode);
1290 err = _nfs4_open_delegation_recall(ctx, state, stateid);
1296 case -NFS4ERR_BADSESSION:
1297 case -NFS4ERR_BADSLOT:
1298 case -NFS4ERR_BAD_HIGH_SLOT:
1299 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION:
1300 case -NFS4ERR_DEADSESSION:
1301 nfs4_schedule_session_recovery(server->nfs_client->cl_session);
1303 case -NFS4ERR_STALE_CLIENTID:
1304 case -NFS4ERR_STALE_STATEID:
1305 case -NFS4ERR_EXPIRED:
1306 /* Don't recall a delegation if it was lost */
1307 nfs4_schedule_lease_recovery(server->nfs_client);
1311 * The show must go on: exit, but mark the
1312 * stateid as needing recovery.
1314 case -NFS4ERR_ADMIN_REVOKED:
1315 case -NFS4ERR_BAD_STATEID:
1316 nfs4_schedule_stateid_recovery(server, state);
1319 * User RPCSEC_GSS context has expired.
1320 * We cannot recover this stateid now, so
1321 * skip it and allow recovery thread to
1328 err = nfs4_handle_exception(server, err, &exception);
1329 } while (exception.retry);
1334 static void nfs4_open_confirm_done(struct rpc_task *task, void *calldata)
1336 struct nfs4_opendata *data = calldata;
1338 data->rpc_status = task->tk_status;
1339 if (data->rpc_status == 0) {
1340 memcpy(data->o_res.stateid.data, data->c_res.stateid.data,
1341 sizeof(data->o_res.stateid.data));
1342 nfs_confirm_seqid(&data->owner->so_seqid, 0);
1343 renew_lease(data->o_res.server, data->timestamp);
1348 static void nfs4_open_confirm_release(void *calldata)
1350 struct nfs4_opendata *data = calldata;
1351 struct nfs4_state *state = NULL;
1353 /* If this request hasn't been cancelled, do nothing */
1354 if (data->cancelled == 0)
1356 /* In case of error, no cleanup! */
1357 if (!data->rpc_done)
1359 state = nfs4_opendata_to_nfs4_state(data);
1361 nfs4_close_state(state, data->o_arg.fmode);
1363 nfs4_opendata_put(data);
1366 static const struct rpc_call_ops nfs4_open_confirm_ops = {
1367 .rpc_call_done = nfs4_open_confirm_done,
1368 .rpc_release = nfs4_open_confirm_release,
1372 * Note: On error, nfs4_proc_open_confirm will free the struct nfs4_opendata
1374 static int _nfs4_proc_open_confirm(struct nfs4_opendata *data)
1376 struct nfs_server *server = NFS_SERVER(data->dir->d_inode);
1377 struct rpc_task *task;
1378 struct rpc_message msg = {
1379 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_CONFIRM],
1380 .rpc_argp = &data->c_arg,
1381 .rpc_resp = &data->c_res,
1382 .rpc_cred = data->owner->so_cred,
1384 struct rpc_task_setup task_setup_data = {
1385 .rpc_client = server->client,
1386 .rpc_message = &msg,
1387 .callback_ops = &nfs4_open_confirm_ops,
1388 .callback_data = data,
1389 .workqueue = nfsiod_workqueue,
1390 .flags = RPC_TASK_ASYNC,
1394 kref_get(&data->kref);
1396 data->rpc_status = 0;
1397 data->timestamp = jiffies;
1398 task = rpc_run_task(&task_setup_data);
1400 return PTR_ERR(task);
1401 status = nfs4_wait_for_completion_rpc_task(task);
1403 data->cancelled = 1;
1406 status = data->rpc_status;
1411 static void nfs4_open_prepare(struct rpc_task *task, void *calldata)
1413 struct nfs4_opendata *data = calldata;
1414 struct nfs4_state_owner *sp = data->owner;
1416 if (nfs_wait_on_sequence(data->o_arg.seqid, task) != 0)
1419 * Check if we still need to send an OPEN call, or if we can use
1420 * a delegation instead.
1422 if (data->state != NULL) {
1423 struct nfs_delegation *delegation;
1425 if (can_open_cached(data->state, data->o_arg.fmode, data->o_arg.open_flags))
1428 delegation = rcu_dereference(NFS_I(data->state->inode)->delegation);
1429 if (delegation != NULL &&
1430 test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags) == 0) {
1436 /* Update sequence id. */
1437 data->o_arg.id = sp->so_owner_id.id;
1438 data->o_arg.clientid = sp->so_server->nfs_client->cl_clientid;
1439 if (data->o_arg.claim == NFS4_OPEN_CLAIM_PREVIOUS) {
1440 task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_NOATTR];
1441 nfs_copy_fh(&data->o_res.fh, data->o_arg.fh);
1443 data->timestamp = jiffies;
1444 if (nfs4_setup_sequence(data->o_arg.server,
1445 &data->o_arg.seq_args,
1446 &data->o_res.seq_res, 1, task))
1448 rpc_call_start(task);
1451 task->tk_action = NULL;
1455 static void nfs4_recover_open_prepare(struct rpc_task *task, void *calldata)
1457 rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED);
1458 nfs4_open_prepare(task, calldata);
1461 static void nfs4_open_done(struct rpc_task *task, void *calldata)
1463 struct nfs4_opendata *data = calldata;
1465 data->rpc_status = task->tk_status;
1467 if (!nfs4_sequence_done(task, &data->o_res.seq_res))
1470 if (task->tk_status == 0) {
1471 switch (data->o_res.f_attr->mode & S_IFMT) {
1475 data->rpc_status = -ELOOP;
1478 data->rpc_status = -EISDIR;
1481 data->rpc_status = -ENOTDIR;
1483 renew_lease(data->o_res.server, data->timestamp);
1484 if (!(data->o_res.rflags & NFS4_OPEN_RESULT_CONFIRM))
1485 nfs_confirm_seqid(&data->owner->so_seqid, 0);
1490 static void nfs4_open_release(void *calldata)
1492 struct nfs4_opendata *data = calldata;
1493 struct nfs4_state *state = NULL;
1495 /* If this request hasn't been cancelled, do nothing */
1496 if (data->cancelled == 0)
1498 /* In case of error, no cleanup! */
1499 if (data->rpc_status != 0 || !data->rpc_done)
1501 /* In case we need an open_confirm, no cleanup! */
1502 if (data->o_res.rflags & NFS4_OPEN_RESULT_CONFIRM)
1504 state = nfs4_opendata_to_nfs4_state(data);
1506 nfs4_close_state(state, data->o_arg.fmode);
1508 nfs4_opendata_put(data);
1511 static const struct rpc_call_ops nfs4_open_ops = {
1512 .rpc_call_prepare = nfs4_open_prepare,
1513 .rpc_call_done = nfs4_open_done,
1514 .rpc_release = nfs4_open_release,
1517 static const struct rpc_call_ops nfs4_recover_open_ops = {
1518 .rpc_call_prepare = nfs4_recover_open_prepare,
1519 .rpc_call_done = nfs4_open_done,
1520 .rpc_release = nfs4_open_release,
1523 static int nfs4_run_open_task(struct nfs4_opendata *data, int isrecover)
1525 struct inode *dir = data->dir->d_inode;
1526 struct nfs_server *server = NFS_SERVER(dir);
1527 struct nfs_openargs *o_arg = &data->o_arg;
1528 struct nfs_openres *o_res = &data->o_res;
1529 struct rpc_task *task;
1530 struct rpc_message msg = {
1531 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN],
1534 .rpc_cred = data->owner->so_cred,
1536 struct rpc_task_setup task_setup_data = {
1537 .rpc_client = server->client,
1538 .rpc_message = &msg,
1539 .callback_ops = &nfs4_open_ops,
1540 .callback_data = data,
1541 .workqueue = nfsiod_workqueue,
1542 .flags = RPC_TASK_ASYNC,
1546 kref_get(&data->kref);
1548 data->rpc_status = 0;
1549 data->cancelled = 0;
1551 task_setup_data.callback_ops = &nfs4_recover_open_ops;
1552 task = rpc_run_task(&task_setup_data);
1554 return PTR_ERR(task);
1555 status = nfs4_wait_for_completion_rpc_task(task);
1557 data->cancelled = 1;
1560 status = data->rpc_status;
1566 static int _nfs4_recover_proc_open(struct nfs4_opendata *data)
1568 struct inode *dir = data->dir->d_inode;
1569 struct nfs_openres *o_res = &data->o_res;
1572 status = nfs4_run_open_task(data, 1);
1573 if (status != 0 || !data->rpc_done)
1576 nfs_refresh_inode(dir, o_res->dir_attr);
1578 if (o_res->rflags & NFS4_OPEN_RESULT_CONFIRM) {
1579 status = _nfs4_proc_open_confirm(data);
1588 * Note: On error, nfs4_proc_open will free the struct nfs4_opendata
1590 static int _nfs4_proc_open(struct nfs4_opendata *data)
1592 struct inode *dir = data->dir->d_inode;
1593 struct nfs_server *server = NFS_SERVER(dir);
1594 struct nfs_openargs *o_arg = &data->o_arg;
1595 struct nfs_openres *o_res = &data->o_res;
1598 status = nfs4_run_open_task(data, 0);
1599 if (status != 0 || !data->rpc_done)
1602 if (o_arg->open_flags & O_CREAT) {
1603 update_changeattr(dir, &o_res->cinfo);
1604 nfs_post_op_update_inode(dir, o_res->dir_attr);
1606 nfs_refresh_inode(dir, o_res->dir_attr);
1607 if ((o_res->rflags & NFS4_OPEN_RESULT_LOCKTYPE_POSIX) == 0)
1608 server->caps &= ~NFS_CAP_POSIX_LOCK;
1609 if(o_res->rflags & NFS4_OPEN_RESULT_CONFIRM) {
1610 status = _nfs4_proc_open_confirm(data);
1614 if (!(o_res->f_attr->valid & NFS_ATTR_FATTR))
1615 _nfs4_proc_getattr(server, &o_res->fh, o_res->f_attr);
1619 static int nfs4_client_recover_expired_lease(struct nfs_client *clp)
1624 for (loop = NFS4_MAX_LOOP_ON_RECOVER; loop != 0; loop--) {
1625 ret = nfs4_wait_clnt_recover(clp);
1628 if (!test_bit(NFS4CLNT_LEASE_EXPIRED, &clp->cl_state) &&
1629 !test_bit(NFS4CLNT_CHECK_LEASE,&clp->cl_state))
1631 nfs4_schedule_state_manager(clp);
1637 static int nfs4_recover_expired_lease(struct nfs_server *server)
1639 return nfs4_client_recover_expired_lease(server->nfs_client);
1644 * reclaim state on the server after a network partition.
1645 * Assumes caller holds the appropriate lock
1647 static int _nfs4_open_expired(struct nfs_open_context *ctx, struct nfs4_state *state)
1649 struct nfs4_opendata *opendata;
1652 opendata = nfs4_open_recoverdata_alloc(ctx, state);
1653 if (IS_ERR(opendata))
1654 return PTR_ERR(opendata);
1655 ret = nfs4_open_recover(opendata, state);
1657 d_drop(ctx->dentry);
1658 nfs4_opendata_put(opendata);
1662 static int nfs4_do_open_expired(struct nfs_open_context *ctx, struct nfs4_state *state)
1664 struct nfs_server *server = NFS_SERVER(state->inode);
1665 struct nfs4_exception exception = { };
1669 err = _nfs4_open_expired(ctx, state);
1673 case -NFS4ERR_GRACE:
1674 case -NFS4ERR_DELAY:
1675 nfs4_handle_exception(server, err, &exception);
1678 } while (exception.retry);
1683 static int nfs4_open_expired(struct nfs4_state_owner *sp, struct nfs4_state *state)
1685 struct nfs_open_context *ctx;
1688 ctx = nfs4_state_find_open_context(state);
1690 return PTR_ERR(ctx);
1691 ret = nfs4_do_open_expired(ctx, state);
1692 put_nfs_open_context(ctx);
1696 #if defined(CONFIG_NFS_V4_1)
1697 static int nfs41_open_expired(struct nfs4_state_owner *sp, struct nfs4_state *state)
1700 struct nfs_server *server = NFS_SERVER(state->inode);
1702 status = nfs41_test_stateid(server, state);
1703 if (status == NFS_OK)
1705 nfs41_free_stateid(server, state);
1706 return nfs4_open_expired(sp, state);
1711 * on an EXCLUSIVE create, the server should send back a bitmask with FATTR4-*
1712 * fields corresponding to attributes that were used to store the verifier.
1713 * Make sure we clobber those fields in the later setattr call
1715 static inline void nfs4_exclusive_attrset(struct nfs4_opendata *opendata, struct iattr *sattr)
1717 if ((opendata->o_res.attrset[1] & FATTR4_WORD1_TIME_ACCESS) &&
1718 !(sattr->ia_valid & ATTR_ATIME_SET))
1719 sattr->ia_valid |= ATTR_ATIME;
1721 if ((opendata->o_res.attrset[1] & FATTR4_WORD1_TIME_MODIFY) &&
1722 !(sattr->ia_valid & ATTR_MTIME_SET))
1723 sattr->ia_valid |= ATTR_MTIME;
1727 * Returns a referenced nfs4_state
1729 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)
1731 struct nfs4_state_owner *sp;
1732 struct nfs4_state *state = NULL;
1733 struct nfs_server *server = NFS_SERVER(dir);
1734 struct nfs4_opendata *opendata;
1737 /* Protect against reboot recovery conflicts */
1739 if (!(sp = nfs4_get_state_owner(server, cred))) {
1740 dprintk("nfs4_do_open: nfs4_get_state_owner failed!\n");
1743 status = nfs4_recover_expired_lease(server);
1745 goto err_put_state_owner;
1746 if (dentry->d_inode != NULL)
1747 nfs4_return_incompatible_delegation(dentry->d_inode, fmode);
1749 opendata = nfs4_opendata_alloc(dentry, sp, fmode, flags, sattr, GFP_KERNEL);
1750 if (opendata == NULL)
1751 goto err_put_state_owner;
1753 if (dentry->d_inode != NULL)
1754 opendata->state = nfs4_get_open_state(dentry->d_inode, sp);
1756 status = _nfs4_proc_open(opendata);
1758 goto err_opendata_put;
1760 state = nfs4_opendata_to_nfs4_state(opendata);
1761 status = PTR_ERR(state);
1763 goto err_opendata_put;
1764 if (server->caps & NFS_CAP_POSIX_LOCK)
1765 set_bit(NFS_STATE_POSIX_LOCKS, &state->flags);
1767 if (opendata->o_arg.open_flags & O_EXCL) {
1768 nfs4_exclusive_attrset(opendata, sattr);
1770 nfs_fattr_init(opendata->o_res.f_attr);
1771 status = nfs4_do_setattr(state->inode, cred,
1772 opendata->o_res.f_attr, sattr,
1775 nfs_setattr_update_inode(state->inode, sattr);
1776 nfs_post_op_update_inode(state->inode, opendata->o_res.f_attr);
1778 nfs4_opendata_put(opendata);
1779 nfs4_put_state_owner(sp);
1783 nfs4_opendata_put(opendata);
1784 err_put_state_owner:
1785 nfs4_put_state_owner(sp);
1792 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)
1794 struct nfs4_exception exception = { };
1795 struct nfs4_state *res;
1799 status = _nfs4_do_open(dir, dentry, fmode, flags, sattr, cred, &res);
1802 /* NOTE: BAD_SEQID means the server and client disagree about the
1803 * book-keeping w.r.t. state-changing operations
1804 * (OPEN/CLOSE/LOCK/LOCKU...)
1805 * It is actually a sign of a bug on the client or on the server.
1807 * If we receive a BAD_SEQID error in the particular case of
1808 * doing an OPEN, we assume that nfs_increment_open_seqid() will
1809 * have unhashed the old state_owner for us, and that we can
1810 * therefore safely retry using a new one. We should still warn
1811 * the user though...
1813 if (status == -NFS4ERR_BAD_SEQID) {
1814 printk(KERN_WARNING "NFS: v4 server %s "
1815 " returned a bad sequence-id error!\n",
1816 NFS_SERVER(dir)->nfs_client->cl_hostname);
1817 exception.retry = 1;
1821 * BAD_STATEID on OPEN means that the server cancelled our
1822 * state before it received the OPEN_CONFIRM.
1823 * Recover by retrying the request as per the discussion
1824 * on Page 181 of RFC3530.
1826 if (status == -NFS4ERR_BAD_STATEID) {
1827 exception.retry = 1;
1830 if (status == -EAGAIN) {
1831 /* We must have found a delegation */
1832 exception.retry = 1;
1835 res = ERR_PTR(nfs4_handle_exception(NFS_SERVER(dir),
1836 status, &exception));
1837 } while (exception.retry);
1841 static int _nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred,
1842 struct nfs_fattr *fattr, struct iattr *sattr,
1843 struct nfs4_state *state)
1845 struct nfs_server *server = NFS_SERVER(inode);
1846 struct nfs_setattrargs arg = {
1847 .fh = NFS_FH(inode),
1850 .bitmask = server->attr_bitmask,
1852 struct nfs_setattrres res = {
1856 struct rpc_message msg = {
1857 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETATTR],
1862 unsigned long timestamp = jiffies;
1865 nfs_fattr_init(fattr);
1867 if (nfs4_copy_delegation_stateid(&arg.stateid, inode)) {
1868 /* Use that stateid */
1869 } else if (state != NULL) {
1870 nfs4_copy_stateid(&arg.stateid, state, current->files, current->tgid);
1872 memcpy(&arg.stateid, &zero_stateid, sizeof(arg.stateid));
1874 status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1);
1875 if (status == 0 && state != NULL)
1876 renew_lease(server, timestamp);
1880 static int nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred,
1881 struct nfs_fattr *fattr, struct iattr *sattr,
1882 struct nfs4_state *state)
1884 struct nfs_server *server = NFS_SERVER(inode);
1885 struct nfs4_exception exception = { };
1888 err = nfs4_handle_exception(server,
1889 _nfs4_do_setattr(inode, cred, fattr, sattr, state),
1891 } while (exception.retry);
1895 struct nfs4_closedata {
1896 struct inode *inode;
1897 struct nfs4_state *state;
1898 struct nfs_closeargs arg;
1899 struct nfs_closeres res;
1900 struct nfs_fattr fattr;
1901 unsigned long timestamp;
1906 static void nfs4_free_closedata(void *data)
1908 struct nfs4_closedata *calldata = data;
1909 struct nfs4_state_owner *sp = calldata->state->owner;
1910 struct super_block *sb = calldata->state->inode->i_sb;
1913 pnfs_roc_release(calldata->state->inode);
1914 nfs4_put_open_state(calldata->state);
1915 nfs_free_seqid(calldata->arg.seqid);
1916 nfs4_put_state_owner(sp);
1917 nfs_sb_deactive(sb);
1921 static void nfs4_close_clear_stateid_flags(struct nfs4_state *state,
1924 spin_lock(&state->owner->so_lock);
1925 if (!(fmode & FMODE_READ))
1926 clear_bit(NFS_O_RDONLY_STATE, &state->flags);
1927 if (!(fmode & FMODE_WRITE))
1928 clear_bit(NFS_O_WRONLY_STATE, &state->flags);
1929 clear_bit(NFS_O_RDWR_STATE, &state->flags);
1930 spin_unlock(&state->owner->so_lock);
1933 static void nfs4_close_done(struct rpc_task *task, void *data)
1935 struct nfs4_closedata *calldata = data;
1936 struct nfs4_state *state = calldata->state;
1937 struct nfs_server *server = NFS_SERVER(calldata->inode);
1939 if (!nfs4_sequence_done(task, &calldata->res.seq_res))
1941 /* hmm. we are done with the inode, and in the process of freeing
1942 * the state_owner. we keep this around to process errors
1944 switch (task->tk_status) {
1947 pnfs_roc_set_barrier(state->inode,
1948 calldata->roc_barrier);
1949 nfs_set_open_stateid(state, &calldata->res.stateid, 0);
1950 renew_lease(server, calldata->timestamp);
1951 nfs4_close_clear_stateid_flags(state,
1952 calldata->arg.fmode);
1954 case -NFS4ERR_STALE_STATEID:
1955 case -NFS4ERR_OLD_STATEID:
1956 case -NFS4ERR_BAD_STATEID:
1957 case -NFS4ERR_EXPIRED:
1958 if (calldata->arg.fmode == 0)
1961 if (nfs4_async_handle_error(task, server, state) == -EAGAIN)
1962 rpc_restart_call_prepare(task);
1964 nfs_release_seqid(calldata->arg.seqid);
1965 nfs_refresh_inode(calldata->inode, calldata->res.fattr);
1968 static void nfs4_close_prepare(struct rpc_task *task, void *data)
1970 struct nfs4_closedata *calldata = data;
1971 struct nfs4_state *state = calldata->state;
1974 if (nfs_wait_on_sequence(calldata->arg.seqid, task) != 0)
1977 task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_DOWNGRADE];
1978 calldata->arg.fmode = FMODE_READ|FMODE_WRITE;
1979 spin_lock(&state->owner->so_lock);
1980 /* Calculate the change in open mode */
1981 if (state->n_rdwr == 0) {
1982 if (state->n_rdonly == 0) {
1983 call_close |= test_bit(NFS_O_RDONLY_STATE, &state->flags);
1984 call_close |= test_bit(NFS_O_RDWR_STATE, &state->flags);
1985 calldata->arg.fmode &= ~FMODE_READ;
1987 if (state->n_wronly == 0) {
1988 call_close |= test_bit(NFS_O_WRONLY_STATE, &state->flags);
1989 call_close |= test_bit(NFS_O_RDWR_STATE, &state->flags);
1990 calldata->arg.fmode &= ~FMODE_WRITE;
1993 spin_unlock(&state->owner->so_lock);
1996 /* Note: exit _without_ calling nfs4_close_done */
1997 task->tk_action = NULL;
2001 if (calldata->arg.fmode == 0) {
2002 task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CLOSE];
2003 if (calldata->roc &&
2004 pnfs_roc_drain(calldata->inode, &calldata->roc_barrier)) {
2005 rpc_sleep_on(&NFS_SERVER(calldata->inode)->roc_rpcwaitq,
2011 nfs_fattr_init(calldata->res.fattr);
2012 calldata->timestamp = jiffies;
2013 if (nfs4_setup_sequence(NFS_SERVER(calldata->inode),
2014 &calldata->arg.seq_args, &calldata->res.seq_res,
2017 rpc_call_start(task);
2020 static const struct rpc_call_ops nfs4_close_ops = {
2021 .rpc_call_prepare = nfs4_close_prepare,
2022 .rpc_call_done = nfs4_close_done,
2023 .rpc_release = nfs4_free_closedata,
2027 * It is possible for data to be read/written from a mem-mapped file
2028 * after the sys_close call (which hits the vfs layer as a flush).
2029 * This means that we can't safely call nfsv4 close on a file until
2030 * the inode is cleared. This in turn means that we are not good
2031 * NFSv4 citizens - we do not indicate to the server to update the file's
2032 * share state even when we are done with one of the three share
2033 * stateid's in the inode.
2035 * NOTE: Caller must be holding the sp->so_owner semaphore!
2037 int nfs4_do_close(struct nfs4_state *state, gfp_t gfp_mask, int wait, bool roc)
2039 struct nfs_server *server = NFS_SERVER(state->inode);
2040 struct nfs4_closedata *calldata;
2041 struct nfs4_state_owner *sp = state->owner;
2042 struct rpc_task *task;
2043 struct rpc_message msg = {
2044 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CLOSE],
2045 .rpc_cred = state->owner->so_cred,
2047 struct rpc_task_setup task_setup_data = {
2048 .rpc_client = server->client,
2049 .rpc_message = &msg,
2050 .callback_ops = &nfs4_close_ops,
2051 .workqueue = nfsiod_workqueue,
2052 .flags = RPC_TASK_ASYNC,
2054 int status = -ENOMEM;
2056 calldata = kzalloc(sizeof(*calldata), gfp_mask);
2057 if (calldata == NULL)
2059 calldata->inode = state->inode;
2060 calldata->state = state;
2061 calldata->arg.fh = NFS_FH(state->inode);
2062 calldata->arg.stateid = &state->open_stateid;
2063 /* Serialization for the sequence id */
2064 calldata->arg.seqid = nfs_alloc_seqid(&state->owner->so_seqid, gfp_mask);
2065 if (calldata->arg.seqid == NULL)
2066 goto out_free_calldata;
2067 calldata->arg.fmode = 0;
2068 calldata->arg.bitmask = server->cache_consistency_bitmask;
2069 calldata->res.fattr = &calldata->fattr;
2070 calldata->res.seqid = calldata->arg.seqid;
2071 calldata->res.server = server;
2072 calldata->roc = roc;
2073 nfs_sb_active(calldata->inode->i_sb);
2075 msg.rpc_argp = &calldata->arg;
2076 msg.rpc_resp = &calldata->res;
2077 task_setup_data.callback_data = calldata;
2078 task = rpc_run_task(&task_setup_data);
2080 return PTR_ERR(task);
2083 status = rpc_wait_for_completion_task(task);
2090 pnfs_roc_release(state->inode);
2091 nfs4_put_open_state(state);
2092 nfs4_put_state_owner(sp);
2096 static struct inode *
2097 nfs4_atomic_open(struct inode *dir, struct nfs_open_context *ctx, int open_flags, struct iattr *attr)
2099 struct nfs4_state *state;
2101 /* Protect against concurrent sillydeletes */
2102 state = nfs4_do_open(dir, ctx->dentry, ctx->mode, open_flags, attr, ctx->cred);
2104 return ERR_CAST(state);
2106 return igrab(state->inode);
2109 static void nfs4_close_context(struct nfs_open_context *ctx, int is_sync)
2111 if (ctx->state == NULL)
2114 nfs4_close_sync(ctx->state, ctx->mode);
2116 nfs4_close_state(ctx->state, ctx->mode);
2119 static int _nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *fhandle)
2121 struct nfs4_server_caps_arg args = {
2124 struct nfs4_server_caps_res res = {};
2125 struct rpc_message msg = {
2126 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SERVER_CAPS],
2132 status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0);
2134 memcpy(server->attr_bitmask, res.attr_bitmask, sizeof(server->attr_bitmask));
2135 server->caps &= ~(NFS_CAP_ACLS|NFS_CAP_HARDLINKS|
2136 NFS_CAP_SYMLINKS|NFS_CAP_FILEID|
2137 NFS_CAP_MODE|NFS_CAP_NLINK|NFS_CAP_OWNER|
2138 NFS_CAP_OWNER_GROUP|NFS_CAP_ATIME|
2139 NFS_CAP_CTIME|NFS_CAP_MTIME);
2140 if (res.attr_bitmask[0] & FATTR4_WORD0_ACL)
2141 server->caps |= NFS_CAP_ACLS;
2142 if (res.has_links != 0)
2143 server->caps |= NFS_CAP_HARDLINKS;
2144 if (res.has_symlinks != 0)
2145 server->caps |= NFS_CAP_SYMLINKS;
2146 if (res.attr_bitmask[0] & FATTR4_WORD0_FILEID)
2147 server->caps |= NFS_CAP_FILEID;
2148 if (res.attr_bitmask[1] & FATTR4_WORD1_MODE)
2149 server->caps |= NFS_CAP_MODE;
2150 if (res.attr_bitmask[1] & FATTR4_WORD1_NUMLINKS)
2151 server->caps |= NFS_CAP_NLINK;
2152 if (res.attr_bitmask[1] & FATTR4_WORD1_OWNER)
2153 server->caps |= NFS_CAP_OWNER;
2154 if (res.attr_bitmask[1] & FATTR4_WORD1_OWNER_GROUP)
2155 server->caps |= NFS_CAP_OWNER_GROUP;
2156 if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_ACCESS)
2157 server->caps |= NFS_CAP_ATIME;
2158 if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_METADATA)
2159 server->caps |= NFS_CAP_CTIME;
2160 if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_MODIFY)
2161 server->caps |= NFS_CAP_MTIME;
2163 memcpy(server->cache_consistency_bitmask, res.attr_bitmask, sizeof(server->cache_consistency_bitmask));
2164 server->cache_consistency_bitmask[0] &= FATTR4_WORD0_CHANGE|FATTR4_WORD0_SIZE;
2165 server->cache_consistency_bitmask[1] &= FATTR4_WORD1_TIME_METADATA|FATTR4_WORD1_TIME_MODIFY;
2166 server->acl_bitmask = res.acl_bitmask;
2172 int nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *fhandle)
2174 struct nfs4_exception exception = { };
2177 err = nfs4_handle_exception(server,
2178 _nfs4_server_capabilities(server, fhandle),
2180 } while (exception.retry);
2184 static int _nfs4_lookup_root(struct nfs_server *server, struct nfs_fh *fhandle,
2185 struct nfs_fsinfo *info)
2187 struct nfs4_lookup_root_arg args = {
2188 .bitmask = nfs4_fattr_bitmap,
2190 struct nfs4_lookup_res res = {
2192 .fattr = info->fattr,
2195 struct rpc_message msg = {
2196 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOOKUP_ROOT],
2201 nfs_fattr_init(info->fattr);
2202 return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0);
2205 static int nfs4_lookup_root(struct nfs_server *server, struct nfs_fh *fhandle,
2206 struct nfs_fsinfo *info)
2208 struct nfs4_exception exception = { };
2211 err = _nfs4_lookup_root(server, fhandle, info);
2214 case -NFS4ERR_WRONGSEC:
2217 err = nfs4_handle_exception(server, err, &exception);
2219 } while (exception.retry);
2223 static int nfs4_lookup_root_sec(struct nfs_server *server, struct nfs_fh *fhandle,
2224 struct nfs_fsinfo *info, rpc_authflavor_t flavor)
2226 struct rpc_auth *auth;
2229 auth = rpcauth_create(flavor, server->client);
2234 ret = nfs4_lookup_root(server, fhandle, info);
2239 static int nfs4_find_root_sec(struct nfs_server *server, struct nfs_fh *fhandle,
2240 struct nfs_fsinfo *info)
2242 int i, len, status = 0;
2243 rpc_authflavor_t flav_array[NFS_MAX_SECFLAVORS];
2245 len = gss_mech_list_pseudoflavors(&flav_array[0]);
2246 flav_array[len] = RPC_AUTH_NULL;
2249 for (i = 0; i < len; i++) {
2250 status = nfs4_lookup_root_sec(server, fhandle, info, flav_array[i]);
2251 if (status == -NFS4ERR_WRONGSEC || status == -EACCES)
2256 * -EACCESS could mean that the user doesn't have correct permissions
2257 * to access the mount. It could also mean that we tried to mount
2258 * with a gss auth flavor, but rpc.gssd isn't running. Either way,
2259 * existing mount programs don't handle -EACCES very well so it should
2260 * be mapped to -EPERM instead.
2262 if (status == -EACCES)
2268 * get the file handle for the "/" directory on the server
2270 static int nfs4_proc_get_root(struct nfs_server *server, struct nfs_fh *fhandle,
2271 struct nfs_fsinfo *info)
2273 int minor_version = server->nfs_client->cl_minorversion;
2274 int status = nfs4_lookup_root(server, fhandle, info);
2275 if ((status == -NFS4ERR_WRONGSEC) && !(server->flags & NFS_MOUNT_SECFLAVOUR))
2277 * A status of -NFS4ERR_WRONGSEC will be mapped to -EPERM
2278 * by nfs4_map_errors() as this function exits.
2280 status = nfs_v4_minor_ops[minor_version]->find_root_sec(server, fhandle, info);
2282 status = nfs4_server_capabilities(server, fhandle);
2284 status = nfs4_do_fsinfo(server, fhandle, info);
2285 return nfs4_map_errors(status);
2288 static void nfs_fixup_referral_attributes(struct nfs_fattr *fattr);
2290 * Get locations and (maybe) other attributes of a referral.
2291 * Note that we'll actually follow the referral later when
2292 * we detect fsid mismatch in inode revalidation
2294 static int nfs4_get_referral(struct inode *dir, const struct qstr *name,
2295 struct nfs_fattr *fattr, struct nfs_fh *fhandle)
2297 int status = -ENOMEM;
2298 struct page *page = NULL;
2299 struct nfs4_fs_locations *locations = NULL;
2301 page = alloc_page(GFP_KERNEL);
2304 locations = kmalloc(sizeof(struct nfs4_fs_locations), GFP_KERNEL);
2305 if (locations == NULL)
2308 status = nfs4_proc_fs_locations(dir, name, locations, page);
2311 /* Make sure server returned a different fsid for the referral */
2312 if (nfs_fsid_equal(&NFS_SERVER(dir)->fsid, &locations->fattr.fsid)) {
2313 dprintk("%s: server did not return a different fsid for"
2314 " a referral at %s\n", __func__, name->name);
2318 /* Fixup attributes for the nfs_lookup() call to nfs_fhget() */
2319 nfs_fixup_referral_attributes(&locations->fattr);
2321 /* replace the lookup nfs_fattr with the locations nfs_fattr */
2322 memcpy(fattr, &locations->fattr, sizeof(struct nfs_fattr));
2323 memset(fhandle, 0, sizeof(struct nfs_fh));
2331 static int _nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fattr *fattr)
2333 struct nfs4_getattr_arg args = {
2335 .bitmask = server->attr_bitmask,
2337 struct nfs4_getattr_res res = {
2341 struct rpc_message msg = {
2342 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETATTR],
2347 nfs_fattr_init(fattr);
2348 return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0);
2351 static int nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fattr *fattr)
2353 struct nfs4_exception exception = { };
2356 err = nfs4_handle_exception(server,
2357 _nfs4_proc_getattr(server, fhandle, fattr),
2359 } while (exception.retry);
2364 * The file is not closed if it is opened due to the a request to change
2365 * the size of the file. The open call will not be needed once the
2366 * VFS layer lookup-intents are implemented.
2368 * Close is called when the inode is destroyed.
2369 * If we haven't opened the file for O_WRONLY, we
2370 * need to in the size_change case to obtain a stateid.
2373 * Because OPEN is always done by name in nfsv4, it is
2374 * possible that we opened a different file by the same
2375 * name. We can recognize this race condition, but we
2376 * can't do anything about it besides returning an error.
2378 * This will be fixed with VFS changes (lookup-intent).
2381 nfs4_proc_setattr(struct dentry *dentry, struct nfs_fattr *fattr,
2382 struct iattr *sattr)
2384 struct inode *inode = dentry->d_inode;
2385 struct rpc_cred *cred = NULL;
2386 struct nfs4_state *state = NULL;
2389 if (pnfs_ld_layoutret_on_setattr(inode))
2390 pnfs_return_layout(inode);
2392 nfs_fattr_init(fattr);
2394 /* Search for an existing open(O_WRITE) file */
2395 if (sattr->ia_valid & ATTR_FILE) {
2396 struct nfs_open_context *ctx;
2398 ctx = nfs_file_open_context(sattr->ia_file);
2405 status = nfs4_do_setattr(inode, cred, fattr, sattr, state);
2407 nfs_setattr_update_inode(inode, sattr);
2411 static int _nfs4_proc_lookupfh(struct rpc_clnt *clnt, struct nfs_server *server,
2412 const struct nfs_fh *dirfh, const struct qstr *name,
2413 struct nfs_fh *fhandle, struct nfs_fattr *fattr)
2416 struct nfs4_lookup_arg args = {
2417 .bitmask = server->attr_bitmask,
2421 struct nfs4_lookup_res res = {
2426 struct rpc_message msg = {
2427 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOOKUP],
2432 nfs_fattr_init(fattr);
2434 dprintk("NFS call lookupfh %s\n", name->name);
2435 status = nfs4_call_sync(clnt, server, &msg, &args.seq_args, &res.seq_res, 0);
2436 dprintk("NFS reply lookupfh: %d\n", status);
2440 static int nfs4_proc_lookupfh(struct nfs_server *server, struct nfs_fh *dirfh,
2441 struct qstr *name, struct nfs_fh *fhandle,
2442 struct nfs_fattr *fattr)
2444 struct nfs4_exception exception = { };
2447 err = _nfs4_proc_lookupfh(server->client, server, dirfh, name, fhandle, fattr);
2449 if (err == -NFS4ERR_MOVED) {
2453 err = nfs4_handle_exception(server, err, &exception);
2454 } while (exception.retry);
2458 static int _nfs4_proc_lookup(struct rpc_clnt *clnt, struct inode *dir,
2459 const struct qstr *name, struct nfs_fh *fhandle,
2460 struct nfs_fattr *fattr)
2464 dprintk("NFS call lookup %s\n", name->name);
2465 status = _nfs4_proc_lookupfh(clnt, NFS_SERVER(dir), NFS_FH(dir), name, fhandle, fattr);
2466 if (status == -NFS4ERR_MOVED)
2467 status = nfs4_get_referral(dir, name, fattr, fhandle);
2468 dprintk("NFS reply lookup: %d\n", status);
2472 void nfs_fixup_secinfo_attributes(struct nfs_fattr *fattr, struct nfs_fh *fh)
2474 memset(fh, 0, sizeof(struct nfs_fh));
2475 fattr->fsid.major = 1;
2476 fattr->valid |= NFS_ATTR_FATTR_TYPE | NFS_ATTR_FATTR_MODE |
2477 NFS_ATTR_FATTR_NLINK | NFS_ATTR_FATTR_FSID | NFS_ATTR_FATTR_MOUNTPOINT;
2478 fattr->mode = S_IFDIR | S_IRUGO | S_IXUGO;
2482 static int nfs4_proc_lookup(struct rpc_clnt *clnt, struct inode *dir, struct qstr *name,
2483 struct nfs_fh *fhandle, struct nfs_fattr *fattr)
2485 struct nfs4_exception exception = { };
2488 err = nfs4_handle_exception(NFS_SERVER(dir),
2489 _nfs4_proc_lookup(clnt, dir, name, fhandle, fattr),
2492 nfs_fixup_secinfo_attributes(fattr, fhandle);
2493 } while (exception.retry);
2497 static int _nfs4_proc_access(struct inode *inode, struct nfs_access_entry *entry)
2499 struct nfs_server *server = NFS_SERVER(inode);
2500 struct nfs4_accessargs args = {
2501 .fh = NFS_FH(inode),
2502 .bitmask = server->attr_bitmask,
2504 struct nfs4_accessres res = {
2507 struct rpc_message msg = {
2508 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_ACCESS],
2511 .rpc_cred = entry->cred,
2513 int mode = entry->mask;
2517 * Determine which access bits we want to ask for...
2519 if (mode & MAY_READ)
2520 args.access |= NFS4_ACCESS_READ;
2521 if (S_ISDIR(inode->i_mode)) {
2522 if (mode & MAY_WRITE)
2523 args.access |= NFS4_ACCESS_MODIFY | NFS4_ACCESS_EXTEND | NFS4_ACCESS_DELETE;
2524 if (mode & MAY_EXEC)
2525 args.access |= NFS4_ACCESS_LOOKUP;
2527 if (mode & MAY_WRITE)
2528 args.access |= NFS4_ACCESS_MODIFY | NFS4_ACCESS_EXTEND;
2529 if (mode & MAY_EXEC)
2530 args.access |= NFS4_ACCESS_EXECUTE;
2533 res.fattr = nfs_alloc_fattr();
2534 if (res.fattr == NULL)
2537 status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0);
2540 if (res.access & NFS4_ACCESS_READ)
2541 entry->mask |= MAY_READ;
2542 if (res.access & (NFS4_ACCESS_MODIFY | NFS4_ACCESS_EXTEND | NFS4_ACCESS_DELETE))
2543 entry->mask |= MAY_WRITE;
2544 if (res.access & (NFS4_ACCESS_LOOKUP|NFS4_ACCESS_EXECUTE))
2545 entry->mask |= MAY_EXEC;
2546 nfs_refresh_inode(inode, res.fattr);
2548 nfs_free_fattr(res.fattr);
2552 static int nfs4_proc_access(struct inode *inode, struct nfs_access_entry *entry)
2554 struct nfs4_exception exception = { };
2557 err = nfs4_handle_exception(NFS_SERVER(inode),
2558 _nfs4_proc_access(inode, entry),
2560 } while (exception.retry);
2565 * TODO: For the time being, we don't try to get any attributes
2566 * along with any of the zero-copy operations READ, READDIR,
2569 * In the case of the first three, we want to put the GETATTR
2570 * after the read-type operation -- this is because it is hard
2571 * to predict the length of a GETATTR response in v4, and thus
2572 * align the READ data correctly. This means that the GETATTR
2573 * may end up partially falling into the page cache, and we should
2574 * shift it into the 'tail' of the xdr_buf before processing.
2575 * To do this efficiently, we need to know the total length
2576 * of data received, which doesn't seem to be available outside
2579 * In the case of WRITE, we also want to put the GETATTR after
2580 * the operation -- in this case because we want to make sure
2581 * we get the post-operation mtime and size. This means that
2582 * we can't use xdr_encode_pages() as written: we need a variant
2583 * of it which would leave room in the 'tail' iovec.
2585 * Both of these changes to the XDR layer would in fact be quite
2586 * minor, but I decided to leave them for a subsequent patch.
2588 static int _nfs4_proc_readlink(struct inode *inode, struct page *page,
2589 unsigned int pgbase, unsigned int pglen)
2591 struct nfs4_readlink args = {
2592 .fh = NFS_FH(inode),
2597 struct nfs4_readlink_res res;
2598 struct rpc_message msg = {
2599 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READLINK],
2604 return nfs4_call_sync(NFS_SERVER(inode)->client, NFS_SERVER(inode), &msg, &args.seq_args, &res.seq_res, 0);
2607 static int nfs4_proc_readlink(struct inode *inode, struct page *page,
2608 unsigned int pgbase, unsigned int pglen)
2610 struct nfs4_exception exception = { };
2613 err = nfs4_handle_exception(NFS_SERVER(inode),
2614 _nfs4_proc_readlink(inode, page, pgbase, pglen),
2616 } while (exception.retry);
2622 * We will need to arrange for the VFS layer to provide an atomic open.
2623 * Until then, this create/open method is prone to inefficiency and race
2624 * conditions due to the lookup, create, and open VFS calls from sys_open()
2625 * placed on the wire.
2627 * Given the above sorry state of affairs, I'm simply sending an OPEN.
2628 * The file will be opened again in the subsequent VFS open call
2629 * (nfs4_proc_file_open).
2631 * The open for read will just hang around to be used by any process that
2632 * opens the file O_RDONLY. This will all be resolved with the VFS changes.
2636 nfs4_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr,
2637 int flags, struct nfs_open_context *ctx)
2639 struct dentry *de = dentry;
2640 struct nfs4_state *state;
2641 struct rpc_cred *cred = NULL;
2650 sattr->ia_mode &= ~current_umask();
2651 state = nfs4_do_open(dir, de, fmode, flags, sattr, cred);
2653 if (IS_ERR(state)) {
2654 status = PTR_ERR(state);
2657 d_add(dentry, igrab(state->inode));
2658 nfs_set_verifier(dentry, nfs_save_change_attribute(dir));
2662 nfs4_close_sync(state, fmode);
2667 static int _nfs4_proc_remove(struct inode *dir, struct qstr *name)
2669 struct nfs_server *server = NFS_SERVER(dir);
2670 struct nfs_removeargs args = {
2672 .name.len = name->len,
2673 .name.name = name->name,
2674 .bitmask = server->attr_bitmask,
2676 struct nfs_removeres res = {
2679 struct rpc_message msg = {
2680 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_REMOVE],
2684 int status = -ENOMEM;
2686 res.dir_attr = nfs_alloc_fattr();
2687 if (res.dir_attr == NULL)
2690 status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 1);
2692 update_changeattr(dir, &res.cinfo);
2693 nfs_post_op_update_inode(dir, res.dir_attr);
2695 nfs_free_fattr(res.dir_attr);
2700 static int nfs4_proc_remove(struct inode *dir, struct qstr *name)
2702 struct nfs4_exception exception = { };
2705 err = nfs4_handle_exception(NFS_SERVER(dir),
2706 _nfs4_proc_remove(dir, name),
2708 } while (exception.retry);
2712 static void nfs4_proc_unlink_setup(struct rpc_message *msg, struct inode *dir)
2714 struct nfs_server *server = NFS_SERVER(dir);
2715 struct nfs_removeargs *args = msg->rpc_argp;
2716 struct nfs_removeres *res = msg->rpc_resp;
2718 args->bitmask = server->cache_consistency_bitmask;
2719 res->server = server;
2720 res->seq_res.sr_slot = NULL;
2721 msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_REMOVE];
2724 static int nfs4_proc_unlink_done(struct rpc_task *task, struct inode *dir)
2726 struct nfs_removeres *res = task->tk_msg.rpc_resp;
2728 if (!nfs4_sequence_done(task, &res->seq_res))
2730 if (nfs4_async_handle_error(task, res->server, NULL) == -EAGAIN)
2732 update_changeattr(dir, &res->cinfo);
2733 nfs_post_op_update_inode(dir, res->dir_attr);
2737 static void nfs4_proc_rename_setup(struct rpc_message *msg, struct inode *dir)
2739 struct nfs_server *server = NFS_SERVER(dir);
2740 struct nfs_renameargs *arg = msg->rpc_argp;
2741 struct nfs_renameres *res = msg->rpc_resp;
2743 msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENAME];
2744 arg->bitmask = server->attr_bitmask;
2745 res->server = server;
2748 static int nfs4_proc_rename_done(struct rpc_task *task, struct inode *old_dir,
2749 struct inode *new_dir)
2751 struct nfs_renameres *res = task->tk_msg.rpc_resp;
2753 if (!nfs4_sequence_done(task, &res->seq_res))
2755 if (nfs4_async_handle_error(task, res->server, NULL) == -EAGAIN)
2758 update_changeattr(old_dir, &res->old_cinfo);
2759 nfs_post_op_update_inode(old_dir, res->old_fattr);
2760 update_changeattr(new_dir, &res->new_cinfo);
2761 nfs_post_op_update_inode(new_dir, res->new_fattr);
2765 static int _nfs4_proc_rename(struct inode *old_dir, struct qstr *old_name,
2766 struct inode *new_dir, struct qstr *new_name)
2768 struct nfs_server *server = NFS_SERVER(old_dir);
2769 struct nfs_renameargs arg = {
2770 .old_dir = NFS_FH(old_dir),
2771 .new_dir = NFS_FH(new_dir),
2772 .old_name = old_name,
2773 .new_name = new_name,
2774 .bitmask = server->attr_bitmask,
2776 struct nfs_renameres res = {
2779 struct rpc_message msg = {
2780 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENAME],
2784 int status = -ENOMEM;
2786 res.old_fattr = nfs_alloc_fattr();
2787 res.new_fattr = nfs_alloc_fattr();
2788 if (res.old_fattr == NULL || res.new_fattr == NULL)
2791 status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1);
2793 update_changeattr(old_dir, &res.old_cinfo);
2794 nfs_post_op_update_inode(old_dir, res.old_fattr);
2795 update_changeattr(new_dir, &res.new_cinfo);
2796 nfs_post_op_update_inode(new_dir, res.new_fattr);
2799 nfs_free_fattr(res.new_fattr);
2800 nfs_free_fattr(res.old_fattr);
2804 static int nfs4_proc_rename(struct inode *old_dir, struct qstr *old_name,
2805 struct inode *new_dir, struct qstr *new_name)
2807 struct nfs4_exception exception = { };
2810 err = nfs4_handle_exception(NFS_SERVER(old_dir),
2811 _nfs4_proc_rename(old_dir, old_name,
2814 } while (exception.retry);
2818 static int _nfs4_proc_link(struct inode *inode, struct inode *dir, struct qstr *name)
2820 struct nfs_server *server = NFS_SERVER(inode);
2821 struct nfs4_link_arg arg = {
2822 .fh = NFS_FH(inode),
2823 .dir_fh = NFS_FH(dir),
2825 .bitmask = server->attr_bitmask,
2827 struct nfs4_link_res res = {
2830 struct rpc_message msg = {
2831 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LINK],
2835 int status = -ENOMEM;
2837 res.fattr = nfs_alloc_fattr();
2838 res.dir_attr = nfs_alloc_fattr();
2839 if (res.fattr == NULL || res.dir_attr == NULL)
2842 status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1);
2844 update_changeattr(dir, &res.cinfo);
2845 nfs_post_op_update_inode(dir, res.dir_attr);
2846 nfs_post_op_update_inode(inode, res.fattr);
2849 nfs_free_fattr(res.dir_attr);
2850 nfs_free_fattr(res.fattr);
2854 static int nfs4_proc_link(struct inode *inode, struct inode *dir, struct qstr *name)
2856 struct nfs4_exception exception = { };
2859 err = nfs4_handle_exception(NFS_SERVER(inode),
2860 _nfs4_proc_link(inode, dir, name),
2862 } while (exception.retry);
2866 struct nfs4_createdata {
2867 struct rpc_message msg;
2868 struct nfs4_create_arg arg;
2869 struct nfs4_create_res res;
2871 struct nfs_fattr fattr;
2872 struct nfs_fattr dir_fattr;
2875 static struct nfs4_createdata *nfs4_alloc_createdata(struct inode *dir,
2876 struct qstr *name, struct iattr *sattr, u32 ftype)
2878 struct nfs4_createdata *data;
2880 data = kzalloc(sizeof(*data), GFP_KERNEL);
2882 struct nfs_server *server = NFS_SERVER(dir);
2884 data->msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CREATE];
2885 data->msg.rpc_argp = &data->arg;
2886 data->msg.rpc_resp = &data->res;
2887 data->arg.dir_fh = NFS_FH(dir);
2888 data->arg.server = server;
2889 data->arg.name = name;
2890 data->arg.attrs = sattr;
2891 data->arg.ftype = ftype;
2892 data->arg.bitmask = server->attr_bitmask;
2893 data->res.server = server;
2894 data->res.fh = &data->fh;
2895 data->res.fattr = &data->fattr;
2896 data->res.dir_fattr = &data->dir_fattr;
2897 nfs_fattr_init(data->res.fattr);
2898 nfs_fattr_init(data->res.dir_fattr);
2903 static int nfs4_do_create(struct inode *dir, struct dentry *dentry, struct nfs4_createdata *data)
2905 int status = nfs4_call_sync(NFS_SERVER(dir)->client, NFS_SERVER(dir), &data->msg,
2906 &data->arg.seq_args, &data->res.seq_res, 1);
2908 update_changeattr(dir, &data->res.dir_cinfo);
2909 nfs_post_op_update_inode(dir, data->res.dir_fattr);
2910 status = nfs_instantiate(dentry, data->res.fh, data->res.fattr);
2915 static void nfs4_free_createdata(struct nfs4_createdata *data)
2920 static int _nfs4_proc_symlink(struct inode *dir, struct dentry *dentry,
2921 struct page *page, unsigned int len, struct iattr *sattr)
2923 struct nfs4_createdata *data;
2924 int status = -ENAMETOOLONG;
2926 if (len > NFS4_MAXPATHLEN)
2930 data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4LNK);
2934 data->msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SYMLINK];
2935 data->arg.u.symlink.pages = &page;
2936 data->arg.u.symlink.len = len;
2938 status = nfs4_do_create(dir, dentry, data);
2940 nfs4_free_createdata(data);
2945 static int nfs4_proc_symlink(struct inode *dir, struct dentry *dentry,
2946 struct page *page, unsigned int len, struct iattr *sattr)
2948 struct nfs4_exception exception = { };
2951 err = nfs4_handle_exception(NFS_SERVER(dir),
2952 _nfs4_proc_symlink(dir, dentry, page,
2955 } while (exception.retry);
2959 static int _nfs4_proc_mkdir(struct inode *dir, struct dentry *dentry,
2960 struct iattr *sattr)
2962 struct nfs4_createdata *data;
2963 int status = -ENOMEM;
2965 data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4DIR);
2969 status = nfs4_do_create(dir, dentry, data);
2971 nfs4_free_createdata(data);
2976 static int nfs4_proc_mkdir(struct inode *dir, struct dentry *dentry,
2977 struct iattr *sattr)
2979 struct nfs4_exception exception = { };
2982 sattr->ia_mode &= ~current_umask();
2984 err = nfs4_handle_exception(NFS_SERVER(dir),
2985 _nfs4_proc_mkdir(dir, dentry, sattr),
2987 } while (exception.retry);
2991 static int _nfs4_proc_readdir(struct dentry *dentry, struct rpc_cred *cred,
2992 u64 cookie, struct page **pages, unsigned int count, int plus)
2994 struct inode *dir = dentry->d_inode;
2995 struct nfs4_readdir_arg args = {
3000 .bitmask = NFS_SERVER(dentry->d_inode)->attr_bitmask,
3003 struct nfs4_readdir_res res;
3004 struct rpc_message msg = {
3005 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READDIR],
3012 dprintk("%s: dentry = %s/%s, cookie = %Lu\n", __func__,
3013 dentry->d_parent->d_name.name,
3014 dentry->d_name.name,
3015 (unsigned long long)cookie);
3016 nfs4_setup_readdir(cookie, NFS_COOKIEVERF(dir), dentry, &args);
3017 res.pgbase = args.pgbase;
3018 status = nfs4_call_sync(NFS_SERVER(dir)->client, NFS_SERVER(dir), &msg, &args.seq_args, &res.seq_res, 0);
3020 memcpy(NFS_COOKIEVERF(dir), res.verifier.data, NFS4_VERIFIER_SIZE);
3021 status += args.pgbase;
3024 nfs_invalidate_atime(dir);
3026 dprintk("%s: returns %d\n", __func__, status);
3030 static int nfs4_proc_readdir(struct dentry *dentry, struct rpc_cred *cred,
3031 u64 cookie, struct page **pages, unsigned int count, int plus)
3033 struct nfs4_exception exception = { };
3036 err = nfs4_handle_exception(NFS_SERVER(dentry->d_inode),
3037 _nfs4_proc_readdir(dentry, cred, cookie,
3038 pages, count, plus),
3040 } while (exception.retry);
3044 static int _nfs4_proc_mknod(struct inode *dir, struct dentry *dentry,
3045 struct iattr *sattr, dev_t rdev)
3047 struct nfs4_createdata *data;
3048 int mode = sattr->ia_mode;
3049 int status = -ENOMEM;
3051 BUG_ON(!(sattr->ia_valid & ATTR_MODE));
3052 BUG_ON(!S_ISFIFO(mode) && !S_ISBLK(mode) && !S_ISCHR(mode) && !S_ISSOCK(mode));
3054 data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4SOCK);
3059 data->arg.ftype = NF4FIFO;
3060 else if (S_ISBLK(mode)) {
3061 data->arg.ftype = NF4BLK;
3062 data->arg.u.device.specdata1 = MAJOR(rdev);
3063 data->arg.u.device.specdata2 = MINOR(rdev);
3065 else if (S_ISCHR(mode)) {
3066 data->arg.ftype = NF4CHR;
3067 data->arg.u.device.specdata1 = MAJOR(rdev);
3068 data->arg.u.device.specdata2 = MINOR(rdev);
3071 status = nfs4_do_create(dir, dentry, data);
3073 nfs4_free_createdata(data);
3078 static int nfs4_proc_mknod(struct inode *dir, struct dentry *dentry,
3079 struct iattr *sattr, dev_t rdev)
3081 struct nfs4_exception exception = { };
3084 sattr->ia_mode &= ~current_umask();
3086 err = nfs4_handle_exception(NFS_SERVER(dir),
3087 _nfs4_proc_mknod(dir, dentry, sattr, rdev),
3089 } while (exception.retry);
3093 static int _nfs4_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle,
3094 struct nfs_fsstat *fsstat)
3096 struct nfs4_statfs_arg args = {
3098 .bitmask = server->attr_bitmask,
3100 struct nfs4_statfs_res res = {
3103 struct rpc_message msg = {
3104 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_STATFS],
3109 nfs_fattr_init(fsstat->fattr);
3110 return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0);
3113 static int nfs4_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsstat *fsstat)
3115 struct nfs4_exception exception = { };
3118 err = nfs4_handle_exception(server,
3119 _nfs4_proc_statfs(server, fhandle, fsstat),
3121 } while (exception.retry);
3125 static int _nfs4_do_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle,
3126 struct nfs_fsinfo *fsinfo)
3128 struct nfs4_fsinfo_arg args = {
3130 .bitmask = server->attr_bitmask,
3132 struct nfs4_fsinfo_res res = {
3135 struct rpc_message msg = {
3136 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FSINFO],
3141 return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0);
3144 static int nfs4_do_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsinfo *fsinfo)
3146 struct nfs4_exception exception = { };
3150 err = nfs4_handle_exception(server,
3151 _nfs4_do_fsinfo(server, fhandle, fsinfo),
3153 } while (exception.retry);
3157 static int nfs4_proc_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsinfo *fsinfo)
3159 nfs_fattr_init(fsinfo->fattr);
3160 return nfs4_do_fsinfo(server, fhandle, fsinfo);
3163 static int _nfs4_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle,
3164 struct nfs_pathconf *pathconf)
3166 struct nfs4_pathconf_arg args = {
3168 .bitmask = server->attr_bitmask,
3170 struct nfs4_pathconf_res res = {
3171 .pathconf = pathconf,
3173 struct rpc_message msg = {
3174 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_PATHCONF],
3179 /* None of the pathconf attributes are mandatory to implement */
3180 if ((args.bitmask[0] & nfs4_pathconf_bitmap[0]) == 0) {
3181 memset(pathconf, 0, sizeof(*pathconf));
3185 nfs_fattr_init(pathconf->fattr);
3186 return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0);
3189 static int nfs4_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle,
3190 struct nfs_pathconf *pathconf)
3192 struct nfs4_exception exception = { };
3196 err = nfs4_handle_exception(server,
3197 _nfs4_proc_pathconf(server, fhandle, pathconf),
3199 } while (exception.retry);
3203 void __nfs4_read_done_cb(struct nfs_read_data *data)
3205 nfs_invalidate_atime(data->inode);
3208 static int nfs4_read_done_cb(struct rpc_task *task, struct nfs_read_data *data)
3210 struct nfs_server *server = NFS_SERVER(data->inode);
3212 if (nfs4_async_handle_error(task, server, data->args.context->state) == -EAGAIN) {
3213 nfs_restart_rpc(task, server->nfs_client);
3217 __nfs4_read_done_cb(data);
3218 if (task->tk_status > 0)
3219 renew_lease(server, data->timestamp);
3223 static int nfs4_read_done(struct rpc_task *task, struct nfs_read_data *data)
3226 dprintk("--> %s\n", __func__);
3228 if (!nfs4_sequence_done(task, &data->res.seq_res))
3231 return data->read_done_cb ? data->read_done_cb(task, data) :
3232 nfs4_read_done_cb(task, data);
3235 static void nfs4_proc_read_setup(struct nfs_read_data *data, struct rpc_message *msg)
3237 data->timestamp = jiffies;
3238 data->read_done_cb = nfs4_read_done_cb;
3239 msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READ];
3242 /* Reset the the nfs_read_data to send the read to the MDS. */
3243 void nfs4_reset_read(struct rpc_task *task, struct nfs_read_data *data)
3245 dprintk("%s Reset task for i/o through\n", __func__);
3246 put_lseg(data->lseg);
3248 /* offsets will differ in the dense stripe case */
3249 data->args.offset = data->mds_offset;
3250 data->ds_clp = NULL;
3251 data->args.fh = NFS_FH(data->inode);
3252 data->read_done_cb = nfs4_read_done_cb;
3253 task->tk_ops = data->mds_ops;
3254 rpc_task_reset_client(task, NFS_CLIENT(data->inode));
3256 EXPORT_SYMBOL_GPL(nfs4_reset_read);
3258 static int nfs4_write_done_cb(struct rpc_task *task, struct nfs_write_data *data)
3260 struct inode *inode = data->inode;
3262 if (nfs4_async_handle_error(task, NFS_SERVER(inode), data->args.context->state) == -EAGAIN) {
3263 nfs_restart_rpc(task, NFS_SERVER(inode)->nfs_client);
3266 if (task->tk_status >= 0) {
3267 renew_lease(NFS_SERVER(inode), data->timestamp);
3268 nfs_post_op_update_inode_force_wcc(inode, data->res.fattr);
3273 static int nfs4_write_done(struct rpc_task *task, struct nfs_write_data *data)
3275 if (!nfs4_sequence_done(task, &data->res.seq_res))
3277 return data->write_done_cb ? data->write_done_cb(task, data) :
3278 nfs4_write_done_cb(task, data);
3281 /* Reset the the nfs_write_data to send the write to the MDS. */
3282 void nfs4_reset_write(struct rpc_task *task, struct nfs_write_data *data)
3284 dprintk("%s Reset task for i/o through\n", __func__);
3285 put_lseg(data->lseg);
3287 data->ds_clp = NULL;
3288 data->write_done_cb = nfs4_write_done_cb;
3289 data->args.fh = NFS_FH(data->inode);
3290 data->args.bitmask = data->res.server->cache_consistency_bitmask;
3291 data->args.offset = data->mds_offset;
3292 data->res.fattr = &data->fattr;
3293 task->tk_ops = data->mds_ops;
3294 rpc_task_reset_client(task, NFS_CLIENT(data->inode));
3296 EXPORT_SYMBOL_GPL(nfs4_reset_write);
3298 static void nfs4_proc_write_setup(struct nfs_write_data *data, struct rpc_message *msg)
3300 struct nfs_server *server = NFS_SERVER(data->inode);
3303 data->args.bitmask = NULL;
3304 data->res.fattr = NULL;
3306 data->args.bitmask = server->cache_consistency_bitmask;
3307 if (!data->write_done_cb)
3308 data->write_done_cb = nfs4_write_done_cb;
3309 data->res.server = server;
3310 data->timestamp = jiffies;
3312 msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_WRITE];
3315 static int nfs4_commit_done_cb(struct rpc_task *task, struct nfs_write_data *data)
3317 struct inode *inode = data->inode;
3319 if (nfs4_async_handle_error(task, NFS_SERVER(inode), NULL) == -EAGAIN) {
3320 nfs_restart_rpc(task, NFS_SERVER(inode)->nfs_client);
3323 nfs_refresh_inode(inode, data->res.fattr);
3327 static int nfs4_commit_done(struct rpc_task *task, struct nfs_write_data *data)
3329 if (!nfs4_sequence_done(task, &data->res.seq_res))
3331 return data->write_done_cb(task, data);
3334 static void nfs4_proc_commit_setup(struct nfs_write_data *data, struct rpc_message *msg)
3336 struct nfs_server *server = NFS_SERVER(data->inode);
3339 data->args.bitmask = NULL;
3340 data->res.fattr = NULL;
3342 data->args.bitmask = server->cache_consistency_bitmask;
3343 if (!data->write_done_cb)
3344 data->write_done_cb = nfs4_commit_done_cb;
3345 data->res.server = server;
3346 msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_COMMIT];
3349 struct nfs4_renewdata {
3350 struct nfs_client *client;
3351 unsigned long timestamp;
3355 * nfs4_proc_async_renew(): This is not one of the nfs_rpc_ops; it is a special
3356 * standalone procedure for queueing an asynchronous RENEW.
3358 static void nfs4_renew_release(void *calldata)
3360 struct nfs4_renewdata *data = calldata;
3361 struct nfs_client *clp = data->client;
3363 if (atomic_read(&clp->cl_count) > 1)
3364 nfs4_schedule_state_renewal(clp);
3365 nfs_put_client(clp);
3369 static void nfs4_renew_done(struct rpc_task *task, void *calldata)
3371 struct nfs4_renewdata *data = calldata;
3372 struct nfs_client *clp = data->client;
3373 unsigned long timestamp = data->timestamp;
3375 if (task->tk_status < 0) {
3376 /* Unless we're shutting down, schedule state recovery! */
3377 if (test_bit(NFS_CS_RENEWD, &clp->cl_res_state) != 0)
3378 nfs4_schedule_lease_recovery(clp);
3381 do_renew_lease(clp, timestamp);
3384 static const struct rpc_call_ops nfs4_renew_ops = {
3385 .rpc_call_done = nfs4_renew_done,
3386 .rpc_release = nfs4_renew_release,
3389 static int nfs4_proc_async_renew(struct nfs_client *clp, struct rpc_cred *cred, unsigned renew_flags)
3391 struct rpc_message msg = {
3392 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENEW],
3396 struct nfs4_renewdata *data;
3398 if (renew_flags == 0)
3400 if (!atomic_inc_not_zero(&clp->cl_count))
3402 data = kmalloc(sizeof(*data), GFP_NOFS);
3406 data->timestamp = jiffies;
3407 return rpc_call_async(clp->cl_rpcclient, &msg, RPC_TASK_SOFT,
3408 &nfs4_renew_ops, data);
3411 static int nfs4_proc_renew(struct nfs_client *clp, struct rpc_cred *cred)
3413 struct rpc_message msg = {
3414 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENEW],
3418 unsigned long now = jiffies;
3421 status = rpc_call_sync(clp->cl_rpcclient, &msg, 0);
3424 do_renew_lease(clp, now);
3428 static inline int nfs4_server_supports_acls(struct nfs_server *server)
3430 return (server->caps & NFS_CAP_ACLS)
3431 && (server->acl_bitmask & ACL4_SUPPORT_ALLOW_ACL)
3432 && (server->acl_bitmask & ACL4_SUPPORT_DENY_ACL);
3435 /* Assuming that XATTR_SIZE_MAX is a multiple of PAGE_CACHE_SIZE, and that
3436 * it's OK to put sizeof(void) * (XATTR_SIZE_MAX/PAGE_CACHE_SIZE) bytes on
3439 #define NFS4ACL_MAXPAGES (XATTR_SIZE_MAX >> PAGE_CACHE_SHIFT)
3441 static void buf_to_pages(const void *buf, size_t buflen,
3442 struct page **pages, unsigned int *pgbase)
3444 const void *p = buf;
3446 *pgbase = offset_in_page(buf);
3448 while (p < buf + buflen) {
3449 *(pages++) = virt_to_page(p);
3450 p += PAGE_CACHE_SIZE;
3454 static int buf_to_pages_noslab(const void *buf, size_t buflen,
3455 struct page **pages, unsigned int *pgbase)
3457 struct page *newpage, **spages;
3463 len = min_t(size_t, PAGE_CACHE_SIZE, buflen);
3464 newpage = alloc_page(GFP_KERNEL);
3466 if (newpage == NULL)
3468 memcpy(page_address(newpage), buf, len);
3473 } while (buflen != 0);
3479 __free_page(spages[rc-1]);
3483 struct nfs4_cached_acl {
3489 static void nfs4_set_cached_acl(struct inode *inode, struct nfs4_cached_acl *acl)
3491 struct nfs_inode *nfsi = NFS_I(inode);
3493 spin_lock(&inode->i_lock);
3494 kfree(nfsi->nfs4_acl);
3495 nfsi->nfs4_acl = acl;
3496 spin_unlock(&inode->i_lock);
3499 static void nfs4_zap_acl_attr(struct inode *inode)
3501 nfs4_set_cached_acl(inode, NULL);
3504 static inline ssize_t nfs4_read_cached_acl(struct inode *inode, char *buf, size_t buflen)
3506 struct nfs_inode *nfsi = NFS_I(inode);
3507 struct nfs4_cached_acl *acl;
3510 spin_lock(&inode->i_lock);
3511 acl = nfsi->nfs4_acl;
3514 if (buf == NULL) /* user is just asking for length */
3516 if (acl->cached == 0)
3518 ret = -ERANGE; /* see getxattr(2) man page */
3519 if (acl->len > buflen)
3521 memcpy(buf, acl->data, acl->len);
3525 spin_unlock(&inode->i_lock);
3529 static void nfs4_write_cached_acl(struct inode *inode, const char *buf, size_t acl_len)
3531 struct nfs4_cached_acl *acl;
3533 if (buf && acl_len <= PAGE_SIZE) {
3534 acl = kmalloc(sizeof(*acl) + acl_len, GFP_KERNEL);
3538 memcpy(acl->data, buf, acl_len);
3540 acl = kmalloc(sizeof(*acl), GFP_KERNEL);
3547 nfs4_set_cached_acl(inode, acl);
3550 static ssize_t __nfs4_get_acl_uncached(struct inode *inode, void *buf, size_t buflen)
3552 struct page *pages[NFS4ACL_MAXPAGES];
3553 struct nfs_getaclargs args = {
3554 .fh = NFS_FH(inode),
3558 struct nfs_getaclres res = {
3562 struct rpc_message msg = {
3563 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETACL],
3567 struct page *localpage = NULL;
3570 if (buflen < PAGE_SIZE) {
3571 /* As long as we're doing a round trip to the server anyway,
3572 * let's be prepared for a page of acl data. */
3573 localpage = alloc_page(GFP_KERNEL);
3574 resp_buf = page_address(localpage);
3575 if (localpage == NULL)
3577 args.acl_pages[0] = localpage;
3578 args.acl_pgbase = 0;
3579 args.acl_len = PAGE_SIZE;
3582 buf_to_pages(buf, buflen, args.acl_pages, &args.acl_pgbase);
3584 ret = nfs4_call_sync(NFS_SERVER(inode)->client, NFS_SERVER(inode), &msg, &args.seq_args, &res.seq_res, 0);
3587 if (res.acl_len > args.acl_len)
3588 nfs4_write_cached_acl(inode, NULL, res.acl_len);
3590 nfs4_write_cached_acl(inode, resp_buf, res.acl_len);
3593 if (res.acl_len > buflen)
3596 memcpy(buf, resp_buf, res.acl_len);
3601 __free_page(localpage);
3605 static ssize_t nfs4_get_acl_uncached(struct inode *inode, void *buf, size_t buflen)
3607 struct nfs4_exception exception = { };
3610 ret = __nfs4_get_acl_uncached(inode, buf, buflen);
3613 ret = nfs4_handle_exception(NFS_SERVER(inode), ret, &exception);
3614 } while (exception.retry);
3618 static ssize_t nfs4_proc_get_acl(struct inode *inode, void *buf, size_t buflen)
3620 struct nfs_server *server = NFS_SERVER(inode);
3623 if (!nfs4_server_supports_acls(server))
3625 ret = nfs_revalidate_inode(server, inode);
3628 if (NFS_I(inode)->cache_validity & NFS_INO_INVALID_ACL)
3629 nfs_zap_acl_cache(inode);
3630 ret = nfs4_read_cached_acl(inode, buf, buflen);
3633 return nfs4_get_acl_uncached(inode, buf, buflen);
3636 static int __nfs4_proc_set_acl(struct inode *inode, const void *buf, size_t buflen)
3638 struct nfs_server *server = NFS_SERVER(inode);
3639 struct page *pages[NFS4ACL_MAXPAGES];
3640 struct nfs_setaclargs arg = {
3641 .fh = NFS_FH(inode),
3645 struct nfs_setaclres res;
3646 struct rpc_message msg = {
3647 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETACL],
3653 if (!nfs4_server_supports_acls(server))
3655 i = buf_to_pages_noslab(buf, buflen, arg.acl_pages, &arg.acl_pgbase);
3658 nfs_inode_return_delegation(inode);
3659 ret = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1);
3662 * Free each page after tx, so the only ref left is
3663 * held by the network stack
3666 put_page(pages[i-1]);
3669 * Acl update can result in inode attribute update.
3670 * so mark the attribute cache invalid.
3672 spin_lock(&inode->i_lock);
3673 NFS_I(inode)->cache_validity |= NFS_INO_INVALID_ATTR;
3674 spin_unlock(&inode->i_lock);
3675 nfs_access_zap_cache(inode);
3676 nfs_zap_acl_cache(inode);
3680 static int nfs4_proc_set_acl(struct inode *inode, const void *buf, size_t buflen)
3682 struct nfs4_exception exception = { };
3685 err = nfs4_handle_exception(NFS_SERVER(inode),
3686 __nfs4_proc_set_acl(inode, buf, buflen),
3688 } while (exception.retry);
3693 nfs4_async_handle_error(struct rpc_task *task, const struct nfs_server *server, struct nfs4_state *state)
3695 struct nfs_client *clp = server->nfs_client;
3697 if (task->tk_status >= 0)
3699 switch(task->tk_status) {
3700 case -NFS4ERR_ADMIN_REVOKED:
3701 case -NFS4ERR_BAD_STATEID:
3702 case -NFS4ERR_OPENMODE:
3705 nfs4_schedule_stateid_recovery(server, state);
3706 goto wait_on_recovery;
3707 case -NFS4ERR_EXPIRED:
3709 nfs4_schedule_stateid_recovery(server, state);
3710 case -NFS4ERR_STALE_STATEID:
3711 case -NFS4ERR_STALE_CLIENTID:
3712 nfs4_schedule_lease_recovery(clp);
3713 goto wait_on_recovery;
3714 #if defined(CONFIG_NFS_V4_1)
3715 case -NFS4ERR_BADSESSION:
3716 case -NFS4ERR_BADSLOT:
3717 case -NFS4ERR_BAD_HIGH_SLOT:
3718 case -NFS4ERR_DEADSESSION:
3719 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION:
3720 case -NFS4ERR_SEQ_FALSE_RETRY:
3721 case -NFS4ERR_SEQ_MISORDERED:
3722 dprintk("%s ERROR %d, Reset session\n", __func__,
3724 nfs4_schedule_session_recovery(clp->cl_session);
3725 task->tk_status = 0;
3727 #endif /* CONFIG_NFS_V4_1 */
3728 case -NFS4ERR_DELAY:
3729 nfs_inc_server_stats(server, NFSIOS_DELAY);
3730 case -NFS4ERR_GRACE:
3732 rpc_delay(task, NFS4_POLL_RETRY_MAX);
3733 task->tk_status = 0;
3735 case -NFS4ERR_RETRY_UNCACHED_REP:
3736 case -NFS4ERR_OLD_STATEID:
3737 task->tk_status = 0;
3740 task->tk_status = nfs4_map_errors(task->tk_status);
3743 rpc_sleep_on(&clp->cl_rpcwaitq, task, NULL);
3744 if (test_bit(NFS4CLNT_MANAGER_RUNNING, &clp->cl_state) == 0)
3745 rpc_wake_up_queued_task(&clp->cl_rpcwaitq, task);
3746 task->tk_status = 0;
3750 int nfs4_proc_setclientid(struct nfs_client *clp, u32 program,
3751 unsigned short port, struct rpc_cred *cred,
3752 struct nfs4_setclientid_res *res)
3754 nfs4_verifier sc_verifier;
3755 struct nfs4_setclientid setclientid = {
3756 .sc_verifier = &sc_verifier,
3758 .sc_cb_ident = clp->cl_cb_ident,
3760 struct rpc_message msg = {
3761 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETCLIENTID],
3762 .rpc_argp = &setclientid,
3770 p = (__be32*)sc_verifier.data;
3771 *p++ = htonl((u32)clp->cl_boot_time.tv_sec);
3772 *p = htonl((u32)clp->cl_boot_time.tv_nsec);
3775 setclientid.sc_name_len = scnprintf(setclientid.sc_name,
3776 sizeof(setclientid.sc_name), "%s/%s %s %s %u",
3778 rpc_peeraddr2str(clp->cl_rpcclient,
3780 rpc_peeraddr2str(clp->cl_rpcclient,
3782 clp->cl_rpcclient->cl_auth->au_ops->au_name,
3783 clp->cl_id_uniquifier);
3784 setclientid.sc_netid_len = scnprintf(setclientid.sc_netid,
3785 sizeof(setclientid.sc_netid),
3786 rpc_peeraddr2str(clp->cl_rpcclient,
3787 RPC_DISPLAY_NETID));
3788 setclientid.sc_uaddr_len = scnprintf(setclientid.sc_uaddr,
3789 sizeof(setclientid.sc_uaddr), "%s.%u.%u",
3790 clp->cl_ipaddr, port >> 8, port & 255);
3792 status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT);
3793 if (status != -NFS4ERR_CLID_INUSE)
3796 ++clp->cl_id_uniquifier;
3800 ssleep(clp->cl_lease_time / HZ + 1);
3805 int nfs4_proc_setclientid_confirm(struct nfs_client *clp,
3806 struct nfs4_setclientid_res *arg,
3807 struct rpc_cred *cred)
3809 struct nfs_fsinfo fsinfo;
3810 struct rpc_message msg = {
3811 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETCLIENTID_CONFIRM],
3813 .rpc_resp = &fsinfo,
3820 status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT);
3822 spin_lock(&clp->cl_lock);
3823 clp->cl_lease_time = fsinfo.lease_time * HZ;
3824 clp->cl_last_renewal = now;
3825 spin_unlock(&clp->cl_lock);
3830 struct nfs4_delegreturndata {
3831 struct nfs4_delegreturnargs args;
3832 struct nfs4_delegreturnres res;
3834 nfs4_stateid stateid;
3835 unsigned long timestamp;
3836 struct nfs_fattr fattr;
3840 static void nfs4_delegreturn_done(struct rpc_task *task, void *calldata)
3842 struct nfs4_delegreturndata *data = calldata;
3844 if (!nfs4_sequence_done(task, &data->res.seq_res))
3847 switch (task->tk_status) {
3848 case -NFS4ERR_STALE_STATEID:
3849 case -NFS4ERR_EXPIRED:
3851 renew_lease(data->res.server, data->timestamp);
3854 if (nfs4_async_handle_error(task, data->res.server, NULL) ==
3856 nfs_restart_rpc(task, data->res.server->nfs_client);
3860 data->rpc_status = task->tk_status;
3863 static void nfs4_delegreturn_release(void *calldata)
3868 #if defined(CONFIG_NFS_V4_1)
3869 static void nfs4_delegreturn_prepare(struct rpc_task *task, void *data)
3871 struct nfs4_delegreturndata *d_data;
3873 d_data = (struct nfs4_delegreturndata *)data;
3875 if (nfs4_setup_sequence(d_data->res.server,
3876 &d_data->args.seq_args,
3877 &d_data->res.seq_res, 1, task))
3879 rpc_call_start(task);
3881 #endif /* CONFIG_NFS_V4_1 */
3883 static const struct rpc_call_ops nfs4_delegreturn_ops = {
3884 #if defined(CONFIG_NFS_V4_1)
3885 .rpc_call_prepare = nfs4_delegreturn_prepare,
3886 #endif /* CONFIG_NFS_V4_1 */
3887 .rpc_call_done = nfs4_delegreturn_done,
3888 .rpc_release = nfs4_delegreturn_release,
3891 static int _nfs4_proc_delegreturn(struct inode *inode, struct rpc_cred *cred, const nfs4_stateid *stateid, int issync)
3893 struct nfs4_delegreturndata *data;
3894 struct nfs_server *server = NFS_SERVER(inode);
3895 struct rpc_task *task;
3896 struct rpc_message msg = {
3897 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DELEGRETURN],
3900 struct rpc_task_setup task_setup_data = {
3901 .rpc_client = server->client,
3902 .rpc_message = &msg,
3903 .callback_ops = &nfs4_delegreturn_ops,
3904 .flags = RPC_TASK_ASYNC,
3908 data = kzalloc(sizeof(*data), GFP_NOFS);
3911 data->args.fhandle = &data->fh;
3912 data->args.stateid = &data->stateid;
3913 data->args.bitmask = server->attr_bitmask;
3914 nfs_copy_fh(&data->fh, NFS_FH(inode));
3915 memcpy(&data->stateid, stateid, sizeof(data->stateid));
3916 data->res.fattr = &data->fattr;
3917 data->res.server = server;
3918 nfs_fattr_init(data->res.fattr);
3919 data->timestamp = jiffies;
3920 data->rpc_status = 0;
3922 task_setup_data.callback_data = data;
3923 msg.rpc_argp = &data->args;
3924 msg.rpc_resp = &data->res;
3925 task = rpc_run_task(&task_setup_data);
3927 return PTR_ERR(task);
3930 status = nfs4_wait_for_completion_rpc_task(task);
3933 status = data->rpc_status;
3936 nfs_refresh_inode(inode, &data->fattr);
3942 int nfs4_proc_delegreturn(struct inode *inode, struct rpc_cred *cred, const nfs4_stateid *stateid, int issync)
3944 struct nfs_server *server = NFS_SERVER(inode);
3945 struct nfs4_exception exception = { };
3948 err = _nfs4_proc_delegreturn(inode, cred, stateid, issync);
3950 case -NFS4ERR_STALE_STATEID:
3951 case -NFS4ERR_EXPIRED:
3955 err = nfs4_handle_exception(server, err, &exception);
3956 } while (exception.retry);
3960 #define NFS4_LOCK_MINTIMEOUT (1 * HZ)
3961 #define NFS4_LOCK_MAXTIMEOUT (30 * HZ)
3964 * sleep, with exponential backoff, and retry the LOCK operation.
3966 static unsigned long
3967 nfs4_set_lock_task_retry(unsigned long timeout)
3969 schedule_timeout_killable(timeout);
3971 if (timeout > NFS4_LOCK_MAXTIMEOUT)
3972 return NFS4_LOCK_MAXTIMEOUT;
3976 static int _nfs4_proc_getlk(struct nfs4_state *state, int cmd, struct file_lock *request)
3978 struct inode *inode = state->inode;
3979 struct nfs_server *server = NFS_SERVER(inode);
3980 struct nfs_client *clp = server->nfs_client;
3981 struct nfs_lockt_args arg = {
3982 .fh = NFS_FH(inode),
3985 struct nfs_lockt_res res = {
3988 struct rpc_message msg = {
3989 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCKT],
3992 .rpc_cred = state->owner->so_cred,
3994 struct nfs4_lock_state *lsp;
3997 arg.lock_owner.clientid = clp->cl_clientid;
3998 status = nfs4_set_lock_state(state, request);
4001 lsp = request->fl_u.nfs4_fl.owner;
4002 arg.lock_owner.id = lsp->ls_id.id;
4003 arg.lock_owner.s_dev = server->s_dev;
4004 status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1);
4007 request->fl_type = F_UNLCK;
4009 case -NFS4ERR_DENIED:
4012 request->fl_ops->fl_release_private(request);
4017 static int nfs4_proc_getlk(struct nfs4_state *state, int cmd, struct file_lock *request)
4019 struct nfs4_exception exception = { };
4023 err = nfs4_handle_exception(NFS_SERVER(state->inode),
4024 _nfs4_proc_getlk(state, cmd, request),
4026 } while (exception.retry);
4030 static int do_vfs_lock(struct file *file, struct file_lock *fl)
4033 switch (fl->fl_flags & (FL_POSIX|FL_FLOCK)) {
4035 res = posix_lock_file_wait(file, fl);
4038 res = flock_lock_file_wait(file, fl);
4046 struct nfs4_unlockdata {
4047 struct nfs_locku_args arg;
4048 struct nfs_locku_res res;
4049 struct nfs4_lock_state *lsp;
4050 struct nfs_open_context *ctx;
4051 struct file_lock fl;
4052 const struct nfs_server *server;
4053 unsigned long timestamp;
4056 static struct nfs4_unlockdata *nfs4_alloc_unlockdata(struct file_lock *fl,
4057 struct nfs_open_context *ctx,
4058 struct nfs4_lock_state *lsp,
4059 struct nfs_seqid *seqid)
4061 struct nfs4_unlockdata *p;
4062 struct inode *inode = lsp->ls_state->inode;
4064 p = kzalloc(sizeof(*p), GFP_NOFS);
4067 p->arg.fh = NFS_FH(inode);
4069 p->arg.seqid = seqid;
4070 p->res.seqid = seqid;
4071 p->arg.stateid = &lsp->ls_stateid;
4073 atomic_inc(&lsp->ls_count);
4074 /* Ensure we don't close file until we're done freeing locks! */
4075 p->ctx = get_nfs_open_context(ctx);
4076 memcpy(&p->fl, fl, sizeof(p->fl));
4077 p->server = NFS_SERVER(inode);
4081 static void nfs4_locku_release_calldata(void *data)
4083 struct nfs4_unlockdata *calldata = data;
4084 nfs_free_seqid(calldata->arg.seqid);
4085 nfs4_put_lock_state(calldata->lsp);
4086 put_nfs_open_context(calldata->ctx);
4090 static void nfs4_locku_done(struct rpc_task *task, void *data)
4092 struct nfs4_unlockdata *calldata = data;
4094 if (!nfs4_sequence_done(task, &calldata->res.seq_res))
4096 switch (task->tk_status) {
4098 memcpy(calldata->lsp->ls_stateid.data,
4099 calldata->res.stateid.data,
4100 sizeof(calldata->lsp->ls_stateid.data));
4101 renew_lease(calldata->server, calldata->timestamp);
4103 case -NFS4ERR_BAD_STATEID:
4104 case -NFS4ERR_OLD_STATEID:
4105 case -NFS4ERR_STALE_STATEID:
4106 case -NFS4ERR_EXPIRED:
4109 if (nfs4_async_handle_error(task, calldata->server, NULL) == -EAGAIN)
4110 nfs_restart_rpc(task,
4111 calldata->server->nfs_client);
4115 static void nfs4_locku_prepare(struct rpc_task *task, void *data)
4117 struct nfs4_unlockdata *calldata = data;
4119 if (nfs_wait_on_sequence(calldata->arg.seqid, task) != 0)
4121 if ((calldata->lsp->ls_flags & NFS_LOCK_INITIALIZED) == 0) {
4122 /* Note: exit _without_ running nfs4_locku_done */
4123 task->tk_action = NULL;
4126 calldata->timestamp = jiffies;
4127 if (nfs4_setup_sequence(calldata->server,
4128 &calldata->arg.seq_args,
4129 &calldata->res.seq_res, 1, task))
4131 rpc_call_start(task);
4134 static const struct rpc_call_ops nfs4_locku_ops = {
4135 .rpc_call_prepare = nfs4_locku_prepare,
4136 .rpc_call_done = nfs4_locku_done,
4137 .rpc_release = nfs4_locku_release_calldata,
4140 static struct rpc_task *nfs4_do_unlck(struct file_lock *fl,
4141 struct nfs_open_context *ctx,
4142 struct nfs4_lock_state *lsp,
4143 struct nfs_seqid *seqid)
4145 struct nfs4_unlockdata *data;
4146 struct rpc_message msg = {
4147 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCKU],
4148 .rpc_cred = ctx->cred,
4150 struct rpc_task_setup task_setup_data = {
4151 .rpc_client = NFS_CLIENT(lsp->ls_state->inode),
4152 .rpc_message = &msg,
4153 .callback_ops = &nfs4_locku_ops,
4154 .workqueue = nfsiod_workqueue,
4155 .flags = RPC_TASK_ASYNC,
4158 /* Ensure this is an unlock - when canceling a lock, the
4159 * canceled lock is passed in, and it won't be an unlock.
4161 fl->fl_type = F_UNLCK;
4163 data = nfs4_alloc_unlockdata(fl, ctx, lsp, seqid);
4165 nfs_free_seqid(seqid);
4166 return ERR_PTR(-ENOMEM);
4169 msg.rpc_argp = &data->arg;
4170 msg.rpc_resp = &data->res;
4171 task_setup_data.callback_data = data;
4172 return rpc_run_task(&task_setup_data);
4175 static int nfs4_proc_unlck(struct nfs4_state *state, int cmd, struct file_lock *request)
4177 struct nfs_inode *nfsi = NFS_I(state->inode);
4178 struct nfs_seqid *seqid;
4179 struct nfs4_lock_state *lsp;
4180 struct rpc_task *task;
4182 unsigned char fl_flags = request->fl_flags;
4184 status = nfs4_set_lock_state(state, request);
4185 /* Unlock _before_ we do the RPC call */
4186 request->fl_flags |= FL_EXISTS;
4187 down_read(&nfsi->rwsem);
4188 if (do_vfs_lock(request->fl_file, request) == -ENOENT) {
4189 up_read(&nfsi->rwsem);
4192 up_read(&nfsi->rwsem);
4195 /* Is this a delegated lock? */
4196 if (test_bit(NFS_DELEGATED_STATE, &state->flags))
4198 lsp = request->fl_u.nfs4_fl.owner;
4199 seqid = nfs_alloc_seqid(&lsp->ls_seqid, GFP_KERNEL);
4203 task = nfs4_do_unlck(request, nfs_file_open_context(request->fl_file), lsp, seqid);
4204 status = PTR_ERR(task);
4207 status = nfs4_wait_for_completion_rpc_task(task);
4210 request->fl_flags = fl_flags;
4214 struct nfs4_lockdata {
4215 struct nfs_lock_args arg;
4216 struct nfs_lock_res res;
4217 struct nfs4_lock_state *lsp;
4218 struct nfs_open_context *ctx;
4219 struct file_lock fl;
4220 unsigned long timestamp;
4223 struct nfs_server *server;
4226 static struct nfs4_lockdata *nfs4_alloc_lockdata(struct file_lock *fl,
4227 struct nfs_open_context *ctx, struct nfs4_lock_state *lsp,
4230 struct nfs4_lockdata *p;
4231 struct inode *inode = lsp->ls_state->inode;
4232 struct nfs_server *server = NFS_SERVER(inode);
4234 p = kzalloc(sizeof(*p), gfp_mask);
4238 p->arg.fh = NFS_FH(inode);
4240 p->arg.open_seqid = nfs_alloc_seqid(&lsp->ls_state->owner->so_seqid, gfp_mask);
4241 if (p->arg.open_seqid == NULL)
4243 p->arg.lock_seqid = nfs_alloc_seqid(&lsp->ls_seqid, gfp_mask);
4244 if (p->arg.lock_seqid == NULL)
4245 goto out_free_seqid;
4246 p->arg.lock_stateid = &lsp->ls_stateid;
4247 p->arg.lock_owner.clientid = server->nfs_client->cl_clientid;
4248 p->arg.lock_owner.id = lsp->ls_id.id;
4249 p->arg.lock_owner.s_dev = server->s_dev;
4250 p->res.lock_seqid = p->arg.lock_seqid;
4253 atomic_inc(&lsp->ls_count);
4254 p->ctx = get_nfs_open_context(ctx);
4255 memcpy(&p->fl, fl, sizeof(p->fl));
4258 nfs_free_seqid(p->arg.open_seqid);
4264 static void nfs4_lock_prepare(struct rpc_task *task, void *calldata)
4266 struct nfs4_lockdata *data = calldata;
4267 struct nfs4_state *state = data->lsp->ls_state;
4269 dprintk("%s: begin!\n", __func__);
4270 if (nfs_wait_on_sequence(data->arg.lock_seqid, task) != 0)
4272 /* Do we need to do an open_to_lock_owner? */
4273 if (!(data->arg.lock_seqid->sequence->flags & NFS_SEQID_CONFIRMED)) {
4274 if (nfs_wait_on_sequence(data->arg.open_seqid, task) != 0)
4276 data->arg.open_stateid = &state->stateid;
4277 data->arg.new_lock_owner = 1;
4278 data->res.open_seqid = data->arg.open_seqid;
4280 data->arg.new_lock_owner = 0;
4281 data->timestamp = jiffies;
4282 if (nfs4_setup_sequence(data->server,
4283 &data->arg.seq_args,
4284 &data->res.seq_res, 1, task))
4286 rpc_call_start(task);
4287 dprintk("%s: done!, ret = %d\n", __func__, data->rpc_status);
4290 static void nfs4_recover_lock_prepare(struct rpc_task *task, void *calldata)
4292 rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED);
4293 nfs4_lock_prepare(task, calldata);
4296 static void nfs4_lock_done(struct rpc_task *task, void *calldata)
4298 struct nfs4_lockdata *data = calldata;
4300 dprintk("%s: begin!\n", __func__);
4302 if (!nfs4_sequence_done(task, &data->res.seq_res))
4305 data->rpc_status = task->tk_status;
4306 if (data->arg.new_lock_owner != 0) {
4307 if (data->rpc_status == 0)
4308 nfs_confirm_seqid(&data->lsp->ls_seqid, 0);
4312 if (data->rpc_status == 0) {
4313 memcpy(data->lsp->ls_stateid.data, data->res.stateid.data,
4314 sizeof(data->lsp->ls_stateid.data));
4315 data->lsp->ls_flags |= NFS_LOCK_INITIALIZED;
4316 renew_lease(NFS_SERVER(data->ctx->dentry->d_inode), data->timestamp);
4319 dprintk("%s: done, ret = %d!\n", __func__, data->rpc_status);
4322 static void nfs4_lock_release(void *calldata)
4324 struct nfs4_lockdata *data = calldata;
4326 dprintk("%s: begin!\n", __func__);
4327 nfs_free_seqid(data->arg.open_seqid);
4328 if (data->cancelled != 0) {
4329 struct rpc_task *task;
4330 task = nfs4_do_unlck(&data->fl, data->ctx, data->lsp,
4331 data->arg.lock_seqid);
4333 rpc_put_task_async(task);
4334 dprintk("%s: cancelling lock!\n", __func__);
4336 nfs_free_seqid(data->arg.lock_seqid);
4337 nfs4_put_lock_state(data->lsp);
4338 put_nfs_open_context(data->ctx);
4340 dprintk("%s: done!\n", __func__);
4343 static const struct rpc_call_ops nfs4_lock_ops = {
4344 .rpc_call_prepare = nfs4_lock_prepare,
4345 .rpc_call_done = nfs4_lock_done,
4346 .rpc_release = nfs4_lock_release,
4349 static const struct rpc_call_ops nfs4_recover_lock_ops = {
4350 .rpc_call_prepare = nfs4_recover_lock_prepare,
4351 .rpc_call_done = nfs4_lock_done,
4352 .rpc_release = nfs4_lock_release,
4355 static void nfs4_handle_setlk_error(struct nfs_server *server, struct nfs4_lock_state *lsp, int new_lock_owner, int error)
4358 case -NFS4ERR_ADMIN_REVOKED:
4359 case -NFS4ERR_BAD_STATEID:
4360 lsp->ls_seqid.flags &= ~NFS_SEQID_CONFIRMED;
4361 if (new_lock_owner != 0 ||
4362 (lsp->ls_flags & NFS_LOCK_INITIALIZED) != 0)
4363 nfs4_schedule_stateid_recovery(server, lsp->ls_state);
4365 case -NFS4ERR_STALE_STATEID:
4366 lsp->ls_seqid.flags &= ~NFS_SEQID_CONFIRMED;
4367 case -NFS4ERR_EXPIRED:
4368 nfs4_schedule_lease_recovery(server->nfs_client);
4372 static int _nfs4_do_setlk(struct nfs4_state *state, int cmd, struct file_lock *fl, int recovery_type)
4374 struct nfs4_lockdata *data;
4375 struct rpc_task *task;
4376 struct rpc_message msg = {
4377 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCK],
4378 .rpc_cred = state->owner->so_cred,
4380 struct rpc_task_setup task_setup_data = {
4381 .rpc_client = NFS_CLIENT(state->inode),
4382 .rpc_message = &msg,
4383 .callback_ops = &nfs4_lock_ops,
4384 .workqueue = nfsiod_workqueue,
4385 .flags = RPC_TASK_ASYNC,
4389 dprintk("%s: begin!\n", __func__);
4390 data = nfs4_alloc_lockdata(fl, nfs_file_open_context(fl->fl_file),
4391 fl->fl_u.nfs4_fl.owner,
4392 recovery_type == NFS_LOCK_NEW ? GFP_KERNEL : GFP_NOFS);
4396 data->arg.block = 1;
4397 if (recovery_type > NFS_LOCK_NEW) {
4398 if (recovery_type == NFS_LOCK_RECLAIM)
4399 data->arg.reclaim = NFS_LOCK_RECLAIM;
4400 task_setup_data.callback_ops = &nfs4_recover_lock_ops;
4402 msg.rpc_argp = &data->arg;
4403 msg.rpc_resp = &data->res;
4404 task_setup_data.callback_data = data;
4405 task = rpc_run_task(&task_setup_data);
4407 return PTR_ERR(task);
4408 ret = nfs4_wait_for_completion_rpc_task(task);
4410 ret = data->rpc_status;
4412 nfs4_handle_setlk_error(data->server, data->lsp,
4413 data->arg.new_lock_owner, ret);
4415 data->cancelled = 1;
4417 dprintk("%s: done, ret = %d!\n", __func__, ret);
4421 static int nfs4_lock_reclaim(struct nfs4_state *state, struct file_lock *request)
4423 struct nfs_server *server = NFS_SERVER(state->inode);
4424 struct nfs4_exception exception = { };
4428 /* Cache the lock if possible... */
4429 if (test_bit(NFS_DELEGATED_STATE, &state->flags) != 0)
4431 err = _nfs4_do_setlk(state, F_SETLK, request, NFS_LOCK_RECLAIM);
4432 if (err != -NFS4ERR_DELAY)
4434 nfs4_handle_exception(server, err, &exception);
4435 } while (exception.retry);
4439 static int nfs4_lock_expired(struct nfs4_state *state, struct file_lock *request)
4441 struct nfs_server *server = NFS_SERVER(state->inode);
4442 struct nfs4_exception exception = { };
4445 err = nfs4_set_lock_state(state, request);
4449 if (test_bit(NFS_DELEGATED_STATE, &state->flags) != 0)
4451 err = _nfs4_do_setlk(state, F_SETLK, request, NFS_LOCK_EXPIRED);
4455 case -NFS4ERR_GRACE:
4456 case -NFS4ERR_DELAY:
4457 nfs4_handle_exception(server, err, &exception);
4460 } while (exception.retry);
4465 #if defined(CONFIG_NFS_V4_1)
4466 static int nfs41_lock_expired(struct nfs4_state *state, struct file_lock *request)
4469 struct nfs_server *server = NFS_SERVER(state->inode);
4471 status = nfs41_test_stateid(server, state);
4472 if (status == NFS_OK)
4474 nfs41_free_stateid(server, state);
4475 return nfs4_lock_expired(state, request);
4479 static int _nfs4_proc_setlk(struct nfs4_state *state, int cmd, struct file_lock *request)
4481 struct nfs_inode *nfsi = NFS_I(state->inode);
4482 unsigned char fl_flags = request->fl_flags;
4483 int status = -ENOLCK;
4485 if ((fl_flags & FL_POSIX) &&
4486 !test_bit(NFS_STATE_POSIX_LOCKS, &state->flags))
4488 /* Is this a delegated open? */
4489 status = nfs4_set_lock_state(state, request);
4492 request->fl_flags |= FL_ACCESS;
4493 status = do_vfs_lock(request->fl_file, request);
4496 down_read(&nfsi->rwsem);
4497 if (test_bit(NFS_DELEGATED_STATE, &state->flags)) {
4498 /* Yes: cache locks! */
4499 /* ...but avoid races with delegation recall... */
4500 request->fl_flags = fl_flags & ~FL_SLEEP;
4501 status = do_vfs_lock(request->fl_file, request);
4504 status = _nfs4_do_setlk(state, cmd, request, NFS_LOCK_NEW);
4507 /* Note: we always want to sleep here! */
4508 request->fl_flags = fl_flags | FL_SLEEP;
4509 if (do_vfs_lock(request->fl_file, request) < 0)
4510 printk(KERN_WARNING "%s: VFS is out of sync with lock manager!\n", __func__);
4512 up_read(&nfsi->rwsem);
4514 request->fl_flags = fl_flags;
4518 static int nfs4_proc_setlk(struct nfs4_state *state, int cmd, struct file_lock *request)
4520 struct nfs4_exception exception = { };
4524 err = _nfs4_proc_setlk(state, cmd, request);
4525 if (err == -NFS4ERR_DENIED)
4527 err = nfs4_handle_exception(NFS_SERVER(state->inode),
4529 } while (exception.retry);
4534 nfs4_proc_lock(struct file *filp, int cmd, struct file_lock *request)
4536 struct nfs_open_context *ctx;
4537 struct nfs4_state *state;
4538 unsigned long timeout = NFS4_LOCK_MINTIMEOUT;
4541 /* verify open state */
4542 ctx = nfs_file_open_context(filp);
4545 if (request->fl_start < 0 || request->fl_end < 0)
4548 if (IS_GETLK(cmd)) {
4550 return nfs4_proc_getlk(state, F_GETLK, request);
4554 if (!(IS_SETLK(cmd) || IS_SETLKW(cmd)))
4557 if (request->fl_type == F_UNLCK) {
4559 return nfs4_proc_unlck(state, cmd, request);
4566 status = nfs4_proc_setlk(state, cmd, request);
4567 if ((status != -EAGAIN) || IS_SETLK(cmd))
4569 timeout = nfs4_set_lock_task_retry(timeout);
4570 status = -ERESTARTSYS;
4573 } while(status < 0);
4577 int nfs4_lock_delegation_recall(struct nfs4_state *state, struct file_lock *fl)
4579 struct nfs_server *server = NFS_SERVER(state->inode);
4580 struct nfs4_exception exception = { };
4583 err = nfs4_set_lock_state(state, fl);
4587 err = _nfs4_do_setlk(state, F_SETLK, fl, NFS_LOCK_NEW);
4590 printk(KERN_ERR "%s: unhandled error %d.\n",
4595 case -NFS4ERR_EXPIRED:
4596 nfs4_schedule_stateid_recovery(server, state);
4597 case -NFS4ERR_STALE_CLIENTID:
4598 case -NFS4ERR_STALE_STATEID:
4599 nfs4_schedule_lease_recovery(server->nfs_client);
4601 case -NFS4ERR_BADSESSION:
4602 case -NFS4ERR_BADSLOT:
4603 case -NFS4ERR_BAD_HIGH_SLOT:
4604 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION:
4605 case -NFS4ERR_DEADSESSION:
4606 nfs4_schedule_session_recovery(server->nfs_client->cl_session);
4610 * The show must go on: exit, but mark the
4611 * stateid as needing recovery.
4613 case -NFS4ERR_ADMIN_REVOKED:
4614 case -NFS4ERR_BAD_STATEID:
4615 case -NFS4ERR_OPENMODE:
4616 nfs4_schedule_stateid_recovery(server, state);
4621 * User RPCSEC_GSS context has expired.
4622 * We cannot recover this stateid now, so
4623 * skip it and allow recovery thread to
4629 case -NFS4ERR_DENIED:
4630 /* kill_proc(fl->fl_pid, SIGLOST, 1); */
4633 case -NFS4ERR_DELAY:
4636 err = nfs4_handle_exception(server, err, &exception);
4637 } while (exception.retry);
4642 static void nfs4_release_lockowner_release(void *calldata)
4647 const struct rpc_call_ops nfs4_release_lockowner_ops = {
4648 .rpc_release = nfs4_release_lockowner_release,
4651 void nfs4_release_lockowner(const struct nfs4_lock_state *lsp)
4653 struct nfs_server *server = lsp->ls_state->owner->so_server;
4654 struct nfs_release_lockowner_args *args;
4655 struct rpc_message msg = {
4656 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RELEASE_LOCKOWNER],
4659 if (server->nfs_client->cl_mvops->minor_version != 0)
4661 args = kmalloc(sizeof(*args), GFP_NOFS);
4664 args->lock_owner.clientid = server->nfs_client->cl_clientid;
4665 args->lock_owner.id = lsp->ls_id.id;
4666 args->lock_owner.s_dev = server->s_dev;
4667 msg.rpc_argp = args;
4668 rpc_call_async(server->client, &msg, 0, &nfs4_release_lockowner_ops, args);
4671 #define XATTR_NAME_NFSV4_ACL "system.nfs4_acl"
4673 static int nfs4_xattr_set_nfs4_acl(struct dentry *dentry, const char *key,
4674 const void *buf, size_t buflen,
4675 int flags, int type)
4677 if (strcmp(key, "") != 0)
4680 return nfs4_proc_set_acl(dentry->d_inode, buf, buflen);
4683 static int nfs4_xattr_get_nfs4_acl(struct dentry *dentry, const char *key,
4684 void *buf, size_t buflen, int type)
4686 if (strcmp(key, "") != 0)
4689 return nfs4_proc_get_acl(dentry->d_inode, buf, buflen);
4692 static size_t nfs4_xattr_list_nfs4_acl(struct dentry *dentry, char *list,
4693 size_t list_len, const char *name,
4694 size_t name_len, int type)
4696 size_t len = sizeof(XATTR_NAME_NFSV4_ACL);
4698 if (!nfs4_server_supports_acls(NFS_SERVER(dentry->d_inode)))
4701 if (list && len <= list_len)
4702 memcpy(list, XATTR_NAME_NFSV4_ACL, len);
4707 * nfs_fhget will use either the mounted_on_fileid or the fileid
4709 static void nfs_fixup_referral_attributes(struct nfs_fattr *fattr)
4711 if (!(((fattr->valid & NFS_ATTR_FATTR_MOUNTED_ON_FILEID) ||
4712 (fattr->valid & NFS_ATTR_FATTR_FILEID)) &&
4713 (fattr->valid & NFS_ATTR_FATTR_FSID) &&
4714 (fattr->valid & NFS_ATTR_FATTR_V4_REFERRAL)))
4717 fattr->valid |= NFS_ATTR_FATTR_TYPE | NFS_ATTR_FATTR_MODE |
4718 NFS_ATTR_FATTR_NLINK;
4719 fattr->mode = S_IFDIR | S_IRUGO | S_IXUGO;
4723 int nfs4_proc_fs_locations(struct inode *dir, const struct qstr *name,
4724 struct nfs4_fs_locations *fs_locations, struct page *page)
4726 struct nfs_server *server = NFS_SERVER(dir);
4728 [0] = FATTR4_WORD0_FSID | FATTR4_WORD0_FS_LOCATIONS,
4730 struct nfs4_fs_locations_arg args = {
4731 .dir_fh = NFS_FH(dir),
4736 struct nfs4_fs_locations_res res = {
4737 .fs_locations = fs_locations,
4739 struct rpc_message msg = {
4740 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FS_LOCATIONS],
4746 dprintk("%s: start\n", __func__);
4748 /* Ask for the fileid of the absent filesystem if mounted_on_fileid
4749 * is not supported */
4750 if (NFS_SERVER(dir)->attr_bitmask[1] & FATTR4_WORD1_MOUNTED_ON_FILEID)
4751 bitmask[1] |= FATTR4_WORD1_MOUNTED_ON_FILEID;
4753 bitmask[0] |= FATTR4_WORD0_FILEID;
4755 nfs_fattr_init(&fs_locations->fattr);
4756 fs_locations->server = server;
4757 fs_locations->nlocations = 0;
4758 status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0);
4759 dprintk("%s: returned status = %d\n", __func__, status);
4763 static int _nfs4_proc_secinfo(struct inode *dir, const struct qstr *name, struct nfs4_secinfo_flavors *flavors)
4766 struct nfs4_secinfo_arg args = {
4767 .dir_fh = NFS_FH(dir),
4770 struct nfs4_secinfo_res res = {
4773 struct rpc_message msg = {
4774 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SECINFO],
4779 dprintk("NFS call secinfo %s\n", name->name);
4780 status = nfs4_call_sync(NFS_SERVER(dir)->client, NFS_SERVER(dir), &msg, &args.seq_args, &res.seq_res, 0);
4781 dprintk("NFS reply secinfo: %d\n", status);
4785 int nfs4_proc_secinfo(struct inode *dir, const struct qstr *name, struct nfs4_secinfo_flavors *flavors)
4787 struct nfs4_exception exception = { };
4790 err = nfs4_handle_exception(NFS_SERVER(dir),
4791 _nfs4_proc_secinfo(dir, name, flavors),
4793 } while (exception.retry);
4797 #ifdef CONFIG_NFS_V4_1
4799 * Check the exchange flags returned by the server for invalid flags, having
4800 * both PNFS and NON_PNFS flags set, and not having one of NON_PNFS, PNFS, or
4803 static int nfs4_check_cl_exchange_flags(u32 flags)
4805 if (flags & ~EXCHGID4_FLAG_MASK_R)
4807 if ((flags & EXCHGID4_FLAG_USE_PNFS_MDS) &&
4808 (flags & EXCHGID4_FLAG_USE_NON_PNFS))
4810 if (!(flags & (EXCHGID4_FLAG_MASK_PNFS)))
4814 return -NFS4ERR_INVAL;
4818 nfs41_same_server_scope(struct server_scope *a, struct server_scope *b)
4820 if (a->server_scope_sz == b->server_scope_sz &&
4821 memcmp(a->server_scope, b->server_scope, a->server_scope_sz) == 0)
4828 * nfs4_proc_exchange_id()
4830 * Since the clientid has expired, all compounds using sessions
4831 * associated with the stale clientid will be returning
4832 * NFS4ERR_BADSESSION in the sequence operation, and will therefore
4833 * be in some phase of session reset.
4835 int nfs4_proc_exchange_id(struct nfs_client *clp, struct rpc_cred *cred)
4837 nfs4_verifier verifier;
4838 struct nfs41_exchange_id_args args = {
4840 .flags = EXCHGID4_FLAG_SUPP_MOVED_REFER,
4842 struct nfs41_exchange_id_res res = {
4846 struct rpc_message msg = {
4847 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_EXCHANGE_ID],
4854 dprintk("--> %s\n", __func__);
4855 BUG_ON(clp == NULL);
4857 p = (u32 *)verifier.data;
4858 *p++ = htonl((u32)clp->cl_boot_time.tv_sec);
4859 *p = htonl((u32)clp->cl_boot_time.tv_nsec);
4860 args.verifier = &verifier;
4862 args.id_len = scnprintf(args.id, sizeof(args.id),
4865 init_utsname()->nodename,
4866 init_utsname()->domainname,
4867 clp->cl_rpcclient->cl_auth->au_flavor);
4869 res.server_scope = kzalloc(sizeof(struct server_scope), GFP_KERNEL);
4870 if (unlikely(!res.server_scope))
4873 status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT);
4875 status = nfs4_check_cl_exchange_flags(clp->cl_exchange_flags);
4878 if (clp->server_scope &&
4879 !nfs41_same_server_scope(clp->server_scope,
4880 res.server_scope)) {
4881 dprintk("%s: server_scope mismatch detected\n",
4883 set_bit(NFS4CLNT_SERVER_SCOPE_MISMATCH, &clp->cl_state);
4884 kfree(clp->server_scope);
4885 clp->server_scope = NULL;
4888 if (!clp->server_scope)
4889 clp->server_scope = res.server_scope;
4891 kfree(res.server_scope);
4894 dprintk("<-- %s status= %d\n", __func__, status);
4898 struct nfs4_get_lease_time_data {
4899 struct nfs4_get_lease_time_args *args;
4900 struct nfs4_get_lease_time_res *res;
4901 struct nfs_client *clp;
4904 static void nfs4_get_lease_time_prepare(struct rpc_task *task,
4908 struct nfs4_get_lease_time_data *data =
4909 (struct nfs4_get_lease_time_data *)calldata;
4911 dprintk("--> %s\n", __func__);
4912 rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED);
4913 /* just setup sequence, do not trigger session recovery
4914 since we're invoked within one */
4915 ret = nfs41_setup_sequence(data->clp->cl_session,
4916 &data->args->la_seq_args,
4917 &data->res->lr_seq_res, 0, task);
4919 BUG_ON(ret == -EAGAIN);
4920 rpc_call_start(task);
4921 dprintk("<-- %s\n", __func__);
4925 * Called from nfs4_state_manager thread for session setup, so don't recover
4926 * from sequence operation or clientid errors.
4928 static void nfs4_get_lease_time_done(struct rpc_task *task, void *calldata)
4930 struct nfs4_get_lease_time_data *data =
4931 (struct nfs4_get_lease_time_data *)calldata;
4933 dprintk("--> %s\n", __func__);
4934 if (!nfs41_sequence_done(task, &data->res->lr_seq_res))
4936 switch (task->tk_status) {
4937 case -NFS4ERR_DELAY:
4938 case -NFS4ERR_GRACE:
4939 dprintk("%s Retry: tk_status %d\n", __func__, task->tk_status);
4940 rpc_delay(task, NFS4_POLL_RETRY_MIN);
4941 task->tk_status = 0;
4943 case -NFS4ERR_RETRY_UNCACHED_REP:
4944 nfs_restart_rpc(task, data->clp);
4947 dprintk("<-- %s\n", __func__);
4950 struct rpc_call_ops nfs4_get_lease_time_ops = {
4951 .rpc_call_prepare = nfs4_get_lease_time_prepare,
4952 .rpc_call_done = nfs4_get_lease_time_done,
4955 int nfs4_proc_get_lease_time(struct nfs_client *clp, struct nfs_fsinfo *fsinfo)
4957 struct rpc_task *task;
4958 struct nfs4_get_lease_time_args args;
4959 struct nfs4_get_lease_time_res res = {
4960 .lr_fsinfo = fsinfo,
4962 struct nfs4_get_lease_time_data data = {
4967 struct rpc_message msg = {
4968 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GET_LEASE_TIME],
4972 struct rpc_task_setup task_setup = {
4973 .rpc_client = clp->cl_rpcclient,
4974 .rpc_message = &msg,
4975 .callback_ops = &nfs4_get_lease_time_ops,
4976 .callback_data = &data,
4977 .flags = RPC_TASK_TIMEOUT,
4981 dprintk("--> %s\n", __func__);
4982 task = rpc_run_task(&task_setup);
4985 status = PTR_ERR(task);
4987 status = task->tk_status;
4990 dprintk("<-- %s return %d\n", __func__, status);
4996 * Reset a slot table
4998 static int nfs4_reset_slot_table(struct nfs4_slot_table *tbl, u32 max_reqs,
5001 struct nfs4_slot *new = NULL;
5005 dprintk("--> %s: max_reqs=%u, tbl->max_slots %d\n", __func__,
5006 max_reqs, tbl->max_slots);
5008 /* Does the newly negotiated max_reqs match the existing slot table? */
5009 if (max_reqs != tbl->max_slots) {
5011 new = kmalloc(max_reqs * sizeof(struct nfs4_slot),
5018 spin_lock(&tbl->slot_tbl_lock);
5021 tbl->max_slots = max_reqs;
5023 for (i = 0; i < tbl->max_slots; ++i)
5024 tbl->slots[i].seq_nr = ivalue;
5025 spin_unlock(&tbl->slot_tbl_lock);
5026 dprintk("%s: tbl=%p slots=%p max_slots=%d\n", __func__,
5027 tbl, tbl->slots, tbl->max_slots);
5029 dprintk("<-- %s: return %d\n", __func__, ret);
5034 * Reset the forechannel and backchannel slot tables
5036 static int nfs4_reset_slot_tables(struct nfs4_session *session)
5040 status = nfs4_reset_slot_table(&session->fc_slot_table,
5041 session->fc_attrs.max_reqs, 1);
5045 status = nfs4_reset_slot_table(&session->bc_slot_table,
5046 session->bc_attrs.max_reqs, 0);
5050 /* Destroy the slot table */
5051 static void nfs4_destroy_slot_tables(struct nfs4_session *session)
5053 if (session->fc_slot_table.slots != NULL) {
5054 kfree(session->fc_slot_table.slots);
5055 session->fc_slot_table.slots = NULL;
5057 if (session->bc_slot_table.slots != NULL) {
5058 kfree(session->bc_slot_table.slots);
5059 session->bc_slot_table.slots = NULL;
5065 * Initialize slot table
5067 static int nfs4_init_slot_table(struct nfs4_slot_table *tbl,
5068 int max_slots, int ivalue)
5070 struct nfs4_slot *slot;
5073 BUG_ON(max_slots > NFS4_MAX_SLOT_TABLE);
5075 dprintk("--> %s: max_reqs=%u\n", __func__, max_slots);
5077 slot = kcalloc(max_slots, sizeof(struct nfs4_slot), GFP_NOFS);
5082 spin_lock(&tbl->slot_tbl_lock);
5083 tbl->max_slots = max_slots;
5085 tbl->highest_used_slotid = -1; /* no slot is currently used */
5086 spin_unlock(&tbl->slot_tbl_lock);
5087 dprintk("%s: tbl=%p slots=%p max_slots=%d\n", __func__,
5088 tbl, tbl->slots, tbl->max_slots);
5090 dprintk("<-- %s: return %d\n", __func__, ret);
5095 * Initialize the forechannel and backchannel tables
5097 static int nfs4_init_slot_tables(struct nfs4_session *session)
5099 struct nfs4_slot_table *tbl;
5102 tbl = &session->fc_slot_table;
5103 if (tbl->slots == NULL) {
5104 status = nfs4_init_slot_table(tbl,
5105 session->fc_attrs.max_reqs, 1);
5110 tbl = &session->bc_slot_table;
5111 if (tbl->slots == NULL) {
5112 status = nfs4_init_slot_table(tbl,
5113 session->bc_attrs.max_reqs, 0);
5115 nfs4_destroy_slot_tables(session);
5121 struct nfs4_session *nfs4_alloc_session(struct nfs_client *clp)
5123 struct nfs4_session *session;
5124 struct nfs4_slot_table *tbl;
5126 session = kzalloc(sizeof(struct nfs4_session), GFP_NOFS);
5130 tbl = &session->fc_slot_table;
5131 tbl->highest_used_slotid = -1;
5132 spin_lock_init(&tbl->slot_tbl_lock);
5133 rpc_init_priority_wait_queue(&tbl->slot_tbl_waitq, "ForeChannel Slot table");
5134 init_completion(&tbl->complete);
5136 tbl = &session->bc_slot_table;
5137 tbl->highest_used_slotid = -1;
5138 spin_lock_init(&tbl->slot_tbl_lock);
5139 rpc_init_wait_queue(&tbl->slot_tbl_waitq, "BackChannel Slot table");
5140 init_completion(&tbl->complete);
5142 session->session_state = 1<<NFS4_SESSION_INITING;
5148 void nfs4_destroy_session(struct nfs4_session *session)
5150 nfs4_proc_destroy_session(session);
5151 dprintk("%s Destroy backchannel for xprt %p\n",
5152 __func__, session->clp->cl_rpcclient->cl_xprt);
5153 xprt_destroy_backchannel(session->clp->cl_rpcclient->cl_xprt,
5154 NFS41_BC_MIN_CALLBACKS);
5155 nfs4_destroy_slot_tables(session);
5160 * Initialize the values to be used by the client in CREATE_SESSION
5161 * If nfs4_init_session set the fore channel request and response sizes,
5164 * Set the back channel max_resp_sz_cached to zero to force the client to
5165 * always set csa_cachethis to FALSE because the current implementation
5166 * of the back channel DRC only supports caching the CB_SEQUENCE operation.
5168 static void nfs4_init_channel_attrs(struct nfs41_create_session_args *args)
5170 struct nfs4_session *session = args->client->cl_session;
5171 unsigned int mxrqst_sz = session->fc_attrs.max_rqst_sz,
5172 mxresp_sz = session->fc_attrs.max_resp_sz;
5175 mxrqst_sz = NFS_MAX_FILE_IO_SIZE;
5177 mxresp_sz = NFS_MAX_FILE_IO_SIZE;
5178 /* Fore channel attributes */
5179 args->fc_attrs.max_rqst_sz = mxrqst_sz;
5180 args->fc_attrs.max_resp_sz = mxresp_sz;
5181 args->fc_attrs.max_ops = NFS4_MAX_OPS;
5182 args->fc_attrs.max_reqs = session->clp->cl_rpcclient->cl_xprt->max_reqs;
5184 dprintk("%s: Fore Channel : max_rqst_sz=%u max_resp_sz=%u "
5185 "max_ops=%u max_reqs=%u\n",
5187 args->fc_attrs.max_rqst_sz, args->fc_attrs.max_resp_sz,
5188 args->fc_attrs.max_ops, args->fc_attrs.max_reqs);
5190 /* Back channel attributes */
5191 args->bc_attrs.max_rqst_sz = PAGE_SIZE;
5192 args->bc_attrs.max_resp_sz = PAGE_SIZE;
5193 args->bc_attrs.max_resp_sz_cached = 0;
5194 args->bc_attrs.max_ops = NFS4_MAX_BACK_CHANNEL_OPS;
5195 args->bc_attrs.max_reqs = 1;
5197 dprintk("%s: Back Channel : max_rqst_sz=%u max_resp_sz=%u "
5198 "max_resp_sz_cached=%u max_ops=%u max_reqs=%u\n",
5200 args->bc_attrs.max_rqst_sz, args->bc_attrs.max_resp_sz,
5201 args->bc_attrs.max_resp_sz_cached, args->bc_attrs.max_ops,
5202 args->bc_attrs.max_reqs);
5205 static int nfs4_verify_fore_channel_attrs(struct nfs41_create_session_args *args, struct nfs4_session *session)
5207 struct nfs4_channel_attrs *sent = &args->fc_attrs;
5208 struct nfs4_channel_attrs *rcvd = &session->fc_attrs;
5210 if (rcvd->max_resp_sz > sent->max_resp_sz)
5213 * Our requested max_ops is the minimum we need; we're not
5214 * prepared to break up compounds into smaller pieces than that.
5215 * So, no point even trying to continue if the server won't
5218 if (rcvd->max_ops < sent->max_ops)
5220 if (rcvd->max_reqs == 0)
5225 static int nfs4_verify_back_channel_attrs(struct nfs41_create_session_args *args, struct nfs4_session *session)
5227 struct nfs4_channel_attrs *sent = &args->bc_attrs;
5228 struct nfs4_channel_attrs *rcvd = &session->bc_attrs;
5230 if (rcvd->max_rqst_sz > sent->max_rqst_sz)
5232 if (rcvd->max_resp_sz < sent->max_resp_sz)
5234 if (rcvd->max_resp_sz_cached > sent->max_resp_sz_cached)
5236 /* These would render the backchannel useless: */
5237 if (rcvd->max_ops == 0)
5239 if (rcvd->max_reqs == 0)
5244 static int nfs4_verify_channel_attrs(struct nfs41_create_session_args *args,
5245 struct nfs4_session *session)
5249 ret = nfs4_verify_fore_channel_attrs(args, session);
5252 return nfs4_verify_back_channel_attrs(args, session);
5255 static int _nfs4_proc_create_session(struct nfs_client *clp)
5257 struct nfs4_session *session = clp->cl_session;
5258 struct nfs41_create_session_args args = {
5260 .cb_program = NFS4_CALLBACK,
5262 struct nfs41_create_session_res res = {
5265 struct rpc_message msg = {
5266 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CREATE_SESSION],
5272 nfs4_init_channel_attrs(&args);
5273 args.flags = (SESSION4_PERSIST | SESSION4_BACK_CHAN);
5275 status = rpc_call_sync(session->clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT);
5278 /* Verify the session's negotiated channel_attrs values */
5279 status = nfs4_verify_channel_attrs(&args, session);
5281 /* Increment the clientid slot sequence id */
5289 * Issues a CREATE_SESSION operation to the server.
5290 * It is the responsibility of the caller to verify the session is
5291 * expired before calling this routine.
5293 int nfs4_proc_create_session(struct nfs_client *clp)
5297 struct nfs4_session *session = clp->cl_session;
5299 dprintk("--> %s clp=%p session=%p\n", __func__, clp, session);
5301 status = _nfs4_proc_create_session(clp);
5305 /* Init and reset the fore channel */
5306 status = nfs4_init_slot_tables(session);
5307 dprintk("slot table initialization returned %d\n", status);
5310 status = nfs4_reset_slot_tables(session);
5311 dprintk("slot table reset returned %d\n", status);
5315 ptr = (unsigned *)&session->sess_id.data[0];
5316 dprintk("%s client>seqid %d sessionid %u:%u:%u:%u\n", __func__,
5317 clp->cl_seqid, ptr[0], ptr[1], ptr[2], ptr[3]);
5319 dprintk("<-- %s\n", __func__);
5324 * Issue the over-the-wire RPC DESTROY_SESSION.
5325 * The caller must serialize access to this routine.
5327 int nfs4_proc_destroy_session(struct nfs4_session *session)
5330 struct rpc_message msg;
5332 dprintk("--> nfs4_proc_destroy_session\n");
5334 /* session is still being setup */
5335 if (session->clp->cl_cons_state != NFS_CS_READY)
5338 msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DESTROY_SESSION];
5339 msg.rpc_argp = session;
5340 msg.rpc_resp = NULL;
5341 msg.rpc_cred = NULL;
5342 status = rpc_call_sync(session->clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT);
5346 "Got error %d from the server on DESTROY_SESSION. "
5347 "Session has been destroyed regardless...\n", status);
5349 dprintk("<-- nfs4_proc_destroy_session\n");
5353 int nfs4_init_session(struct nfs_server *server)
5355 struct nfs_client *clp = server->nfs_client;
5356 struct nfs4_session *session;
5357 unsigned int rsize, wsize;
5360 if (!nfs4_has_session(clp))
5363 session = clp->cl_session;
5364 if (!test_and_clear_bit(NFS4_SESSION_INITING, &session->session_state))
5367 rsize = server->rsize;
5369 rsize = NFS_MAX_FILE_IO_SIZE;
5370 wsize = server->wsize;
5372 wsize = NFS_MAX_FILE_IO_SIZE;
5374 session->fc_attrs.max_rqst_sz = wsize + nfs41_maxwrite_overhead;
5375 session->fc_attrs.max_resp_sz = rsize + nfs41_maxread_overhead;
5377 ret = nfs4_recover_expired_lease(server);
5379 ret = nfs4_check_client_ready(clp);
5383 int nfs4_init_ds_session(struct nfs_client *clp)
5385 struct nfs4_session *session = clp->cl_session;
5388 if (!test_and_clear_bit(NFS4_SESSION_INITING, &session->session_state))
5391 ret = nfs4_client_recover_expired_lease(clp);
5393 /* Test for the DS role */
5394 if (!is_ds_client(clp))
5397 ret = nfs4_check_client_ready(clp);
5401 EXPORT_SYMBOL_GPL(nfs4_init_ds_session);
5405 * Renew the cl_session lease.
5407 struct nfs4_sequence_data {
5408 struct nfs_client *clp;
5409 struct nfs4_sequence_args args;
5410 struct nfs4_sequence_res res;
5413 static void nfs41_sequence_release(void *data)
5415 struct nfs4_sequence_data *calldata = data;
5416 struct nfs_client *clp = calldata->clp;
5418 if (atomic_read(&clp->cl_count) > 1)
5419 nfs4_schedule_state_renewal(clp);
5420 nfs_put_client(clp);
5424 static int nfs41_sequence_handle_errors(struct rpc_task *task, struct nfs_client *clp)
5426 switch(task->tk_status) {
5427 case -NFS4ERR_DELAY:
5428 rpc_delay(task, NFS4_POLL_RETRY_MAX);
5431 nfs4_schedule_lease_recovery(clp);
5436 static void nfs41_sequence_call_done(struct rpc_task *task, void *data)
5438 struct nfs4_sequence_data *calldata = data;
5439 struct nfs_client *clp = calldata->clp;
5441 if (!nfs41_sequence_done(task, task->tk_msg.rpc_resp))
5444 if (task->tk_status < 0) {
5445 dprintk("%s ERROR %d\n", __func__, task->tk_status);
5446 if (atomic_read(&clp->cl_count) == 1)
5449 if (nfs41_sequence_handle_errors(task, clp) == -EAGAIN) {
5450 rpc_restart_call_prepare(task);
5454 dprintk("%s rpc_cred %p\n", __func__, task->tk_msg.rpc_cred);
5456 dprintk("<-- %s\n", __func__);
5459 static void nfs41_sequence_prepare(struct rpc_task *task, void *data)
5461 struct nfs4_sequence_data *calldata = data;
5462 struct nfs_client *clp = calldata->clp;
5463 struct nfs4_sequence_args *args;
5464 struct nfs4_sequence_res *res;
5466 args = task->tk_msg.rpc_argp;
5467 res = task->tk_msg.rpc_resp;
5469 if (nfs41_setup_sequence(clp->cl_session, args, res, 0, task))
5471 rpc_call_start(task);
5474 static const struct rpc_call_ops nfs41_sequence_ops = {
5475 .rpc_call_done = nfs41_sequence_call_done,
5476 .rpc_call_prepare = nfs41_sequence_prepare,
5477 .rpc_release = nfs41_sequence_release,
5480 static struct rpc_task *_nfs41_proc_sequence(struct nfs_client *clp, struct rpc_cred *cred)
5482 struct nfs4_sequence_data *calldata;
5483 struct rpc_message msg = {
5484 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SEQUENCE],
5487 struct rpc_task_setup task_setup_data = {
5488 .rpc_client = clp->cl_rpcclient,
5489 .rpc_message = &msg,
5490 .callback_ops = &nfs41_sequence_ops,
5491 .flags = RPC_TASK_ASYNC | RPC_TASK_SOFT,
5494 if (!atomic_inc_not_zero(&clp->cl_count))
5495 return ERR_PTR(-EIO);
5496 calldata = kzalloc(sizeof(*calldata), GFP_NOFS);
5497 if (calldata == NULL) {
5498 nfs_put_client(clp);
5499 return ERR_PTR(-ENOMEM);
5501 msg.rpc_argp = &calldata->args;
5502 msg.rpc_resp = &calldata->res;
5503 calldata->clp = clp;
5504 task_setup_data.callback_data = calldata;
5506 return rpc_run_task(&task_setup_data);
5509 static int nfs41_proc_async_sequence(struct nfs_client *clp, struct rpc_cred *cred, unsigned renew_flags)
5511 struct rpc_task *task;
5514 if ((renew_flags & NFS4_RENEW_TIMEOUT) == 0)
5516 task = _nfs41_proc_sequence(clp, cred);
5518 ret = PTR_ERR(task);
5520 rpc_put_task_async(task);
5521 dprintk("<-- %s status=%d\n", __func__, ret);
5525 static int nfs4_proc_sequence(struct nfs_client *clp, struct rpc_cred *cred)
5527 struct rpc_task *task;
5530 task = _nfs41_proc_sequence(clp, cred);
5532 ret = PTR_ERR(task);
5535 ret = rpc_wait_for_completion_task(task);
5537 struct nfs4_sequence_res *res = task->tk_msg.rpc_resp;
5539 if (task->tk_status == 0)
5540 nfs41_handle_sequence_flag_errors(clp, res->sr_status_flags);
5541 ret = task->tk_status;
5545 dprintk("<-- %s status=%d\n", __func__, ret);
5549 struct nfs4_reclaim_complete_data {
5550 struct nfs_client *clp;
5551 struct nfs41_reclaim_complete_args arg;
5552 struct nfs41_reclaim_complete_res res;
5555 static void nfs4_reclaim_complete_prepare(struct rpc_task *task, void *data)
5557 struct nfs4_reclaim_complete_data *calldata = data;
5559 rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED);
5560 if (nfs41_setup_sequence(calldata->clp->cl_session,
5561 &calldata->arg.seq_args,
5562 &calldata->res.seq_res, 0, task))
5565 rpc_call_start(task);
5568 static int nfs41_reclaim_complete_handle_errors(struct rpc_task *task, struct nfs_client *clp)
5570 switch(task->tk_status) {
5572 case -NFS4ERR_COMPLETE_ALREADY:
5573 case -NFS4ERR_WRONG_CRED: /* What to do here? */
5575 case -NFS4ERR_DELAY:
5576 rpc_delay(task, NFS4_POLL_RETRY_MAX);
5578 case -NFS4ERR_RETRY_UNCACHED_REP:
5581 nfs4_schedule_lease_recovery(clp);
5586 static void nfs4_reclaim_complete_done(struct rpc_task *task, void *data)
5588 struct nfs4_reclaim_complete_data *calldata = data;
5589 struct nfs_client *clp = calldata->clp;
5590 struct nfs4_sequence_res *res = &calldata->res.seq_res;
5592 dprintk("--> %s\n", __func__);
5593 if (!nfs41_sequence_done(task, res))
5596 if (nfs41_reclaim_complete_handle_errors(task, clp) == -EAGAIN) {
5597 rpc_restart_call_prepare(task);
5600 dprintk("<-- %s\n", __func__);
5603 static void nfs4_free_reclaim_complete_data(void *data)
5605 struct nfs4_reclaim_complete_data *calldata = data;
5610 static const struct rpc_call_ops nfs4_reclaim_complete_call_ops = {
5611 .rpc_call_prepare = nfs4_reclaim_complete_prepare,
5612 .rpc_call_done = nfs4_reclaim_complete_done,
5613 .rpc_release = nfs4_free_reclaim_complete_data,
5617 * Issue a global reclaim complete.
5619 static int nfs41_proc_reclaim_complete(struct nfs_client *clp)
5621 struct nfs4_reclaim_complete_data *calldata;
5622 struct rpc_task *task;
5623 struct rpc_message msg = {
5624 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RECLAIM_COMPLETE],
5626 struct rpc_task_setup task_setup_data = {
5627 .rpc_client = clp->cl_rpcclient,
5628 .rpc_message = &msg,
5629 .callback_ops = &nfs4_reclaim_complete_call_ops,
5630 .flags = RPC_TASK_ASYNC,
5632 int status = -ENOMEM;
5634 dprintk("--> %s\n", __func__);
5635 calldata = kzalloc(sizeof(*calldata), GFP_NOFS);
5636 if (calldata == NULL)
5638 calldata->clp = clp;
5639 calldata->arg.one_fs = 0;
5641 msg.rpc_argp = &calldata->arg;
5642 msg.rpc_resp = &calldata->res;
5643 task_setup_data.callback_data = calldata;
5644 task = rpc_run_task(&task_setup_data);
5646 status = PTR_ERR(task);
5649 status = nfs4_wait_for_completion_rpc_task(task);
5651 status = task->tk_status;
5655 dprintk("<-- %s status=%d\n", __func__, status);
5660 nfs4_layoutget_prepare(struct rpc_task *task, void *calldata)
5662 struct nfs4_layoutget *lgp = calldata;
5663 struct nfs_server *server = NFS_SERVER(lgp->args.inode);
5665 dprintk("--> %s\n", __func__);
5666 /* Note the is a race here, where a CB_LAYOUTRECALL can come in
5667 * right now covering the LAYOUTGET we are about to send.
5668 * However, that is not so catastrophic, and there seems
5669 * to be no way to prevent it completely.
5671 if (nfs4_setup_sequence(server, &lgp->args.seq_args,
5672 &lgp->res.seq_res, 0, task))
5674 if (pnfs_choose_layoutget_stateid(&lgp->args.stateid,
5675 NFS_I(lgp->args.inode)->layout,
5676 lgp->args.ctx->state)) {
5677 rpc_exit(task, NFS4_OK);
5680 rpc_call_start(task);
5683 static void nfs4_layoutget_done(struct rpc_task *task, void *calldata)
5685 struct nfs4_layoutget *lgp = calldata;
5686 struct nfs_server *server = NFS_SERVER(lgp->args.inode);
5688 dprintk("--> %s\n", __func__);
5690 if (!nfs4_sequence_done(task, &lgp->res.seq_res))
5693 switch (task->tk_status) {
5696 case -NFS4ERR_LAYOUTTRYLATER:
5697 case -NFS4ERR_RECALLCONFLICT:
5698 task->tk_status = -NFS4ERR_DELAY;
5701 if (nfs4_async_handle_error(task, server, NULL) == -EAGAIN) {
5702 rpc_restart_call_prepare(task);
5706 dprintk("<-- %s\n", __func__);
5709 static void nfs4_layoutget_release(void *calldata)
5711 struct nfs4_layoutget *lgp = calldata;
5713 dprintk("--> %s\n", __func__);
5714 put_nfs_open_context(lgp->args.ctx);
5716 dprintk("<-- %s\n", __func__);
5719 static const struct rpc_call_ops nfs4_layoutget_call_ops = {
5720 .rpc_call_prepare = nfs4_layoutget_prepare,
5721 .rpc_call_done = nfs4_layoutget_done,
5722 .rpc_release = nfs4_layoutget_release,
5725 int nfs4_proc_layoutget(struct nfs4_layoutget *lgp)
5727 struct nfs_server *server = NFS_SERVER(lgp->args.inode);
5728 struct rpc_task *task;
5729 struct rpc_message msg = {
5730 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTGET],
5731 .rpc_argp = &lgp->args,
5732 .rpc_resp = &lgp->res,
5734 struct rpc_task_setup task_setup_data = {
5735 .rpc_client = server->client,
5736 .rpc_message = &msg,
5737 .callback_ops = &nfs4_layoutget_call_ops,
5738 .callback_data = lgp,
5739 .flags = RPC_TASK_ASYNC,
5743 dprintk("--> %s\n", __func__);
5745 lgp->res.layoutp = &lgp->args.layout;
5746 lgp->res.seq_res.sr_slot = NULL;
5747 task = rpc_run_task(&task_setup_data);
5749 return PTR_ERR(task);
5750 status = nfs4_wait_for_completion_rpc_task(task);
5752 status = task->tk_status;
5754 status = pnfs_layout_process(lgp);
5756 dprintk("<-- %s status=%d\n", __func__, status);
5761 nfs4_layoutreturn_prepare(struct rpc_task *task, void *calldata)
5763 struct nfs4_layoutreturn *lrp = calldata;
5765 dprintk("--> %s\n", __func__);
5766 if (nfs41_setup_sequence(lrp->clp->cl_session, &lrp->args.seq_args,
5767 &lrp->res.seq_res, 0, task))
5769 rpc_call_start(task);
5772 static void nfs4_layoutreturn_done(struct rpc_task *task, void *calldata)
5774 struct nfs4_layoutreturn *lrp = calldata;
5775 struct nfs_server *server;
5776 struct pnfs_layout_hdr *lo = lrp->args.layout;
5778 dprintk("--> %s\n", __func__);
5780 if (!nfs4_sequence_done(task, &lrp->res.seq_res))
5783 server = NFS_SERVER(lrp->args.inode);
5784 if (nfs4_async_handle_error(task, server, NULL) == -EAGAIN) {
5785 nfs_restart_rpc(task, lrp->clp);
5788 spin_lock(&lo->plh_inode->i_lock);
5789 if (task->tk_status == 0) {
5790 if (lrp->res.lrs_present) {
5791 pnfs_set_layout_stateid(lo, &lrp->res.stateid, true);
5793 BUG_ON(!list_empty(&lo->plh_segs));
5795 lo->plh_block_lgets--;
5796 spin_unlock(&lo->plh_inode->i_lock);
5797 dprintk("<-- %s\n", __func__);
5800 static void nfs4_layoutreturn_release(void *calldata)
5802 struct nfs4_layoutreturn *lrp = calldata;
5804 dprintk("--> %s\n", __func__);
5805 put_layout_hdr(lrp->args.layout);
5807 dprintk("<-- %s\n", __func__);
5810 static const struct rpc_call_ops nfs4_layoutreturn_call_ops = {
5811 .rpc_call_prepare = nfs4_layoutreturn_prepare,
5812 .rpc_call_done = nfs4_layoutreturn_done,
5813 .rpc_release = nfs4_layoutreturn_release,
5816 int nfs4_proc_layoutreturn(struct nfs4_layoutreturn *lrp)
5818 struct rpc_task *task;
5819 struct rpc_message msg = {
5820 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTRETURN],
5821 .rpc_argp = &lrp->args,
5822 .rpc_resp = &lrp->res,
5824 struct rpc_task_setup task_setup_data = {
5825 .rpc_client = lrp->clp->cl_rpcclient,
5826 .rpc_message = &msg,
5827 .callback_ops = &nfs4_layoutreturn_call_ops,
5828 .callback_data = lrp,
5832 dprintk("--> %s\n", __func__);
5833 task = rpc_run_task(&task_setup_data);
5835 return PTR_ERR(task);
5836 status = task->tk_status;
5837 dprintk("<-- %s status=%d\n", __func__, status);
5843 * Retrieve the list of Data Server devices from the MDS.
5845 static int _nfs4_getdevicelist(struct nfs_server *server,
5846 const struct nfs_fh *fh,
5847 struct pnfs_devicelist *devlist)
5849 struct nfs4_getdevicelist_args args = {
5851 .layoutclass = server->pnfs_curr_ld->id,
5853 struct nfs4_getdevicelist_res res = {
5856 struct rpc_message msg = {
5857 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETDEVICELIST],
5863 dprintk("--> %s\n", __func__);
5864 status = nfs4_call_sync(server->client, server, &msg, &args.seq_args,
5866 dprintk("<-- %s status=%d\n", __func__, status);
5870 int nfs4_proc_getdevicelist(struct nfs_server *server,
5871 const struct nfs_fh *fh,
5872 struct pnfs_devicelist *devlist)
5874 struct nfs4_exception exception = { };
5878 err = nfs4_handle_exception(server,
5879 _nfs4_getdevicelist(server, fh, devlist),
5881 } while (exception.retry);
5883 dprintk("%s: err=%d, num_devs=%u\n", __func__,
5884 err, devlist->num_devs);
5888 EXPORT_SYMBOL_GPL(nfs4_proc_getdevicelist);
5891 _nfs4_proc_getdeviceinfo(struct nfs_server *server, struct pnfs_device *pdev)
5893 struct nfs4_getdeviceinfo_args args = {
5896 struct nfs4_getdeviceinfo_res res = {
5899 struct rpc_message msg = {
5900 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETDEVICEINFO],
5906 dprintk("--> %s\n", __func__);
5907 status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0);
5908 dprintk("<-- %s status=%d\n", __func__, status);
5913 int nfs4_proc_getdeviceinfo(struct nfs_server *server, struct pnfs_device *pdev)
5915 struct nfs4_exception exception = { };
5919 err = nfs4_handle_exception(server,
5920 _nfs4_proc_getdeviceinfo(server, pdev),
5922 } while (exception.retry);
5925 EXPORT_SYMBOL_GPL(nfs4_proc_getdeviceinfo);
5927 static void nfs4_layoutcommit_prepare(struct rpc_task *task, void *calldata)
5929 struct nfs4_layoutcommit_data *data = calldata;
5930 struct nfs_server *server = NFS_SERVER(data->args.inode);
5932 if (nfs4_setup_sequence(server, &data->args.seq_args,
5933 &data->res.seq_res, 1, task))
5935 rpc_call_start(task);
5939 nfs4_layoutcommit_done(struct rpc_task *task, void *calldata)
5941 struct nfs4_layoutcommit_data *data = calldata;
5942 struct nfs_server *server = NFS_SERVER(data->args.inode);
5944 if (!nfs4_sequence_done(task, &data->res.seq_res))
5947 switch (task->tk_status) { /* Just ignore these failures */
5948 case NFS4ERR_DELEG_REVOKED: /* layout was recalled */
5949 case NFS4ERR_BADIOMODE: /* no IOMODE_RW layout for range */
5950 case NFS4ERR_BADLAYOUT: /* no layout */
5951 case NFS4ERR_GRACE: /* loca_recalim always false */
5952 task->tk_status = 0;
5955 if (nfs4_async_handle_error(task, server, NULL) == -EAGAIN) {
5956 nfs_restart_rpc(task, server->nfs_client);
5960 if (task->tk_status == 0)
5961 nfs_post_op_update_inode_force_wcc(data->args.inode,
5965 static void nfs4_layoutcommit_release(void *calldata)
5967 struct nfs4_layoutcommit_data *data = calldata;
5968 struct pnfs_layout_segment *lseg, *tmp;
5970 pnfs_cleanup_layoutcommit(data);
5971 /* Matched by references in pnfs_set_layoutcommit */
5972 list_for_each_entry_safe(lseg, tmp, &data->lseg_list, pls_lc_list) {
5973 list_del_init(&lseg->pls_lc_list);
5974 if (test_and_clear_bit(NFS_LSEG_LAYOUTCOMMIT,
5978 put_rpccred(data->cred);
5982 static const struct rpc_call_ops nfs4_layoutcommit_ops = {
5983 .rpc_call_prepare = nfs4_layoutcommit_prepare,
5984 .rpc_call_done = nfs4_layoutcommit_done,
5985 .rpc_release = nfs4_layoutcommit_release,
5989 nfs4_proc_layoutcommit(struct nfs4_layoutcommit_data *data, bool sync)
5991 struct rpc_message msg = {
5992 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTCOMMIT],
5993 .rpc_argp = &data->args,
5994 .rpc_resp = &data->res,
5995 .rpc_cred = data->cred,
5997 struct rpc_task_setup task_setup_data = {
5998 .task = &data->task,
5999 .rpc_client = NFS_CLIENT(data->args.inode),
6000 .rpc_message = &msg,
6001 .callback_ops = &nfs4_layoutcommit_ops,
6002 .callback_data = data,
6003 .flags = RPC_TASK_ASYNC,
6005 struct rpc_task *task;
6008 dprintk("NFS: %4d initiating layoutcommit call. sync %d "
6009 "lbw: %llu inode %lu\n",
6010 data->task.tk_pid, sync,
6011 data->args.lastbytewritten,
6012 data->args.inode->i_ino);
6014 task = rpc_run_task(&task_setup_data);
6016 return PTR_ERR(task);
6019 status = nfs4_wait_for_completion_rpc_task(task);
6022 status = task->tk_status;
6024 dprintk("%s: status %d\n", __func__, status);
6030 _nfs41_proc_secinfo_no_name(struct nfs_server *server, struct nfs_fh *fhandle,
6031 struct nfs_fsinfo *info, struct nfs4_secinfo_flavors *flavors)
6033 struct nfs41_secinfo_no_name_args args = {
6034 .style = SECINFO_STYLE_CURRENT_FH,
6036 struct nfs4_secinfo_res res = {
6039 struct rpc_message msg = {
6040 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SECINFO_NO_NAME],
6044 return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0);
6048 nfs41_proc_secinfo_no_name(struct nfs_server *server, struct nfs_fh *fhandle,
6049 struct nfs_fsinfo *info, struct nfs4_secinfo_flavors *flavors)
6051 struct nfs4_exception exception = { };
6054 err = _nfs41_proc_secinfo_no_name(server, fhandle, info, flavors);
6057 case -NFS4ERR_WRONGSEC:
6058 case -NFS4ERR_NOTSUPP:
6061 err = nfs4_handle_exception(server, err, &exception);
6063 } while (exception.retry);
6068 nfs41_find_root_sec(struct nfs_server *server, struct nfs_fh *fhandle,
6069 struct nfs_fsinfo *info)
6073 rpc_authflavor_t flavor;
6074 struct nfs4_secinfo_flavors *flavors;
6076 page = alloc_page(GFP_KERNEL);
6082 flavors = page_address(page);
6083 err = nfs41_proc_secinfo_no_name(server, fhandle, info, flavors);
6086 * Fall back on "guess and check" method if
6087 * the server doesn't support SECINFO_NO_NAME
6089 if (err == -NFS4ERR_WRONGSEC || err == -NFS4ERR_NOTSUPP) {
6090 err = nfs4_find_root_sec(server, fhandle, info);
6096 flavor = nfs_find_best_sec(flavors);
6098 err = nfs4_lookup_root_sec(server, fhandle, info, flavor);
6107 static int _nfs41_test_stateid(struct nfs_server *server, struct nfs4_state *state)
6110 struct nfs41_test_stateid_args args = {
6111 .stateid = &state->stateid,
6113 struct nfs41_test_stateid_res res;
6114 struct rpc_message msg = {
6115 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_TEST_STATEID],
6119 args.seq_args.sa_session = res.seq_res.sr_session = NULL;
6120 status = nfs4_call_sync_sequence(server->client, server, &msg, &args.seq_args, &res.seq_res, 0, 1);
6124 static int nfs41_test_stateid(struct nfs_server *server, struct nfs4_state *state)
6126 struct nfs4_exception exception = { };
6129 err = nfs4_handle_exception(server,
6130 _nfs41_test_stateid(server, state),
6132 } while (exception.retry);
6136 static int _nfs4_free_stateid(struct nfs_server *server, struct nfs4_state *state)
6139 struct nfs41_free_stateid_args args = {
6140 .stateid = &state->stateid,
6142 struct nfs41_free_stateid_res res;
6143 struct rpc_message msg = {
6144 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FREE_STATEID],
6149 args.seq_args.sa_session = res.seq_res.sr_session = NULL;
6150 status = nfs4_call_sync_sequence(server->client, server, &msg, &args.seq_args, &res.seq_res, 0, 1);
6154 static int nfs41_free_stateid(struct nfs_server *server, struct nfs4_state *state)
6156 struct nfs4_exception exception = { };
6159 err = nfs4_handle_exception(server,
6160 _nfs4_free_stateid(server, state),
6162 } while (exception.retry);
6165 #endif /* CONFIG_NFS_V4_1 */
6167 struct nfs4_state_recovery_ops nfs40_reboot_recovery_ops = {
6168 .owner_flag_bit = NFS_OWNER_RECLAIM_REBOOT,
6169 .state_flag_bit = NFS_STATE_RECLAIM_REBOOT,
6170 .recover_open = nfs4_open_reclaim,
6171 .recover_lock = nfs4_lock_reclaim,
6172 .establish_clid = nfs4_init_clientid,
6173 .get_clid_cred = nfs4_get_setclientid_cred,
6176 #if defined(CONFIG_NFS_V4_1)
6177 struct nfs4_state_recovery_ops nfs41_reboot_recovery_ops = {
6178 .owner_flag_bit = NFS_OWNER_RECLAIM_REBOOT,
6179 .state_flag_bit = NFS_STATE_RECLAIM_REBOOT,
6180 .recover_open = nfs4_open_reclaim,
6181 .recover_lock = nfs4_lock_reclaim,
6182 .establish_clid = nfs41_init_clientid,
6183 .get_clid_cred = nfs4_get_exchange_id_cred,
6184 .reclaim_complete = nfs41_proc_reclaim_complete,
6186 #endif /* CONFIG_NFS_V4_1 */
6188 struct nfs4_state_recovery_ops nfs40_nograce_recovery_ops = {
6189 .owner_flag_bit = NFS_OWNER_RECLAIM_NOGRACE,
6190 .state_flag_bit = NFS_STATE_RECLAIM_NOGRACE,
6191 .recover_open = nfs4_open_expired,
6192 .recover_lock = nfs4_lock_expired,
6193 .establish_clid = nfs4_init_clientid,
6194 .get_clid_cred = nfs4_get_setclientid_cred,
6197 #if defined(CONFIG_NFS_V4_1)
6198 struct nfs4_state_recovery_ops nfs41_nograce_recovery_ops = {
6199 .owner_flag_bit = NFS_OWNER_RECLAIM_NOGRACE,
6200 .state_flag_bit = NFS_STATE_RECLAIM_NOGRACE,
6201 .recover_open = nfs41_open_expired,
6202 .recover_lock = nfs41_lock_expired,
6203 .establish_clid = nfs41_init_clientid,
6204 .get_clid_cred = nfs4_get_exchange_id_cred,
6206 #endif /* CONFIG_NFS_V4_1 */
6208 struct nfs4_state_maintenance_ops nfs40_state_renewal_ops = {
6209 .sched_state_renewal = nfs4_proc_async_renew,
6210 .get_state_renewal_cred_locked = nfs4_get_renew_cred_locked,
6211 .renew_lease = nfs4_proc_renew,
6214 #if defined(CONFIG_NFS_V4_1)
6215 struct nfs4_state_maintenance_ops nfs41_state_renewal_ops = {
6216 .sched_state_renewal = nfs41_proc_async_sequence,
6217 .get_state_renewal_cred_locked = nfs4_get_machine_cred_locked,
6218 .renew_lease = nfs4_proc_sequence,
6222 static const struct nfs4_minor_version_ops nfs_v4_0_minor_ops = {
6224 .call_sync = _nfs4_call_sync,
6225 .validate_stateid = nfs4_validate_delegation_stateid,
6226 .find_root_sec = nfs4_find_root_sec,
6227 .reboot_recovery_ops = &nfs40_reboot_recovery_ops,
6228 .nograce_recovery_ops = &nfs40_nograce_recovery_ops,
6229 .state_renewal_ops = &nfs40_state_renewal_ops,
6232 #if defined(CONFIG_NFS_V4_1)
6233 static const struct nfs4_minor_version_ops nfs_v4_1_minor_ops = {
6235 .call_sync = _nfs4_call_sync_session,
6236 .validate_stateid = nfs41_validate_delegation_stateid,
6237 .find_root_sec = nfs41_find_root_sec,
6238 .reboot_recovery_ops = &nfs41_reboot_recovery_ops,
6239 .nograce_recovery_ops = &nfs41_nograce_recovery_ops,
6240 .state_renewal_ops = &nfs41_state_renewal_ops,
6244 const struct nfs4_minor_version_ops *nfs_v4_minor_ops[] = {
6245 [0] = &nfs_v4_0_minor_ops,
6246 #if defined(CONFIG_NFS_V4_1)
6247 [1] = &nfs_v4_1_minor_ops,
6251 static const struct inode_operations nfs4_file_inode_operations = {
6252 .permission = nfs_permission,
6253 .getattr = nfs_getattr,
6254 .setattr = nfs_setattr,
6255 .getxattr = generic_getxattr,
6256 .setxattr = generic_setxattr,
6257 .listxattr = generic_listxattr,
6258 .removexattr = generic_removexattr,
6261 const struct nfs_rpc_ops nfs_v4_clientops = {
6262 .version = 4, /* protocol version */
6263 .dentry_ops = &nfs4_dentry_operations,
6264 .dir_inode_ops = &nfs4_dir_inode_operations,
6265 .file_inode_ops = &nfs4_file_inode_operations,
6266 .getroot = nfs4_proc_get_root,
6267 .getattr = nfs4_proc_getattr,
6268 .setattr = nfs4_proc_setattr,
6269 .lookupfh = nfs4_proc_lookupfh,
6270 .lookup = nfs4_proc_lookup,
6271 .access = nfs4_proc_access,
6272 .readlink = nfs4_proc_readlink,
6273 .create = nfs4_proc_create,
6274 .remove = nfs4_proc_remove,
6275 .unlink_setup = nfs4_proc_unlink_setup,
6276 .unlink_done = nfs4_proc_unlink_done,
6277 .rename = nfs4_proc_rename,
6278 .rename_setup = nfs4_proc_rename_setup,
6279 .rename_done = nfs4_proc_rename_done,
6280 .link = nfs4_proc_link,
6281 .symlink = nfs4_proc_symlink,
6282 .mkdir = nfs4_proc_mkdir,
6283 .rmdir = nfs4_proc_remove,
6284 .readdir = nfs4_proc_readdir,
6285 .mknod = nfs4_proc_mknod,
6286 .statfs = nfs4_proc_statfs,
6287 .fsinfo = nfs4_proc_fsinfo,
6288 .pathconf = nfs4_proc_pathconf,
6289 .set_capabilities = nfs4_server_capabilities,
6290 .decode_dirent = nfs4_decode_dirent,
6291 .read_setup = nfs4_proc_read_setup,
6292 .read_done = nfs4_read_done,
6293 .write_setup = nfs4_proc_write_setup,
6294 .write_done = nfs4_write_done,
6295 .commit_setup = nfs4_proc_commit_setup,
6296 .commit_done = nfs4_commit_done,
6297 .lock = nfs4_proc_lock,
6298 .clear_acl_cache = nfs4_zap_acl_attr,
6299 .close_context = nfs4_close_context,
6300 .open_context = nfs4_atomic_open,
6301 .init_client = nfs4_init_client,
6302 .secinfo = nfs4_proc_secinfo,
6305 static const struct xattr_handler nfs4_xattr_nfs4_acl_handler = {
6306 .prefix = XATTR_NAME_NFSV4_ACL,
6307 .list = nfs4_xattr_list_nfs4_acl,
6308 .get = nfs4_xattr_get_nfs4_acl,
6309 .set = nfs4_xattr_set_nfs4_acl,
6312 const struct xattr_handler *nfs4_xattr_handlers[] = {
6313 &nfs4_xattr_nfs4_acl_handler,