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/nfs.h>
45 #include <linux/nfs4.h>
46 #include <linux/nfs_fs.h>
47 #include <linux/nfs_page.h>
48 #include <linux/namei.h>
49 #include <linux/mount.h>
50 #include <linux/module.h>
51 #include <linux/sunrpc/bc_xprt.h>
54 #include "delegation.h"
60 #define NFSDBG_FACILITY NFSDBG_PROC
62 #define NFS4_POLL_RETRY_MIN (HZ/10)
63 #define NFS4_POLL_RETRY_MAX (15*HZ)
65 #define NFS4_MAX_LOOP_ON_RECOVER (10)
68 static int _nfs4_proc_open(struct nfs4_opendata *data);
69 static int _nfs4_recover_proc_open(struct nfs4_opendata *data);
70 static int nfs4_do_fsinfo(struct nfs_server *, struct nfs_fh *, struct nfs_fsinfo *);
71 static int nfs4_async_handle_error(struct rpc_task *, const struct nfs_server *, struct nfs4_state *);
72 static int _nfs4_proc_lookup(struct inode *dir, const struct qstr *name, struct nfs_fh *fhandle, struct nfs_fattr *fattr);
73 static int _nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fattr *fattr);
74 static int nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred,
75 struct nfs_fattr *fattr, struct iattr *sattr,
76 struct nfs4_state *state);
78 /* Prevent leaks of NFSv4 errors into userland */
79 static int nfs4_map_errors(int err)
84 case -NFS4ERR_RESOURCE:
87 dprintk("%s could not handle NFSv4 error %d\n",
95 * This is our standard bitmap for GETATTR requests.
97 const u32 nfs4_fattr_bitmap[2] = {
102 | FATTR4_WORD0_FILEID,
104 | FATTR4_WORD1_NUMLINKS
106 | FATTR4_WORD1_OWNER_GROUP
107 | FATTR4_WORD1_RAWDEV
108 | FATTR4_WORD1_SPACE_USED
109 | FATTR4_WORD1_TIME_ACCESS
110 | FATTR4_WORD1_TIME_METADATA
111 | FATTR4_WORD1_TIME_MODIFY
114 const u32 nfs4_statfs_bitmap[2] = {
115 FATTR4_WORD0_FILES_AVAIL
116 | FATTR4_WORD0_FILES_FREE
117 | FATTR4_WORD0_FILES_TOTAL,
118 FATTR4_WORD1_SPACE_AVAIL
119 | FATTR4_WORD1_SPACE_FREE
120 | FATTR4_WORD1_SPACE_TOTAL
123 const u32 nfs4_pathconf_bitmap[2] = {
125 | FATTR4_WORD0_MAXNAME,
129 const u32 nfs4_fsinfo_bitmap[2] = { FATTR4_WORD0_MAXFILESIZE
130 | FATTR4_WORD0_MAXREAD
131 | FATTR4_WORD0_MAXWRITE
132 | FATTR4_WORD0_LEASE_TIME,
133 FATTR4_WORD1_TIME_DELTA
134 | FATTR4_WORD1_FS_LAYOUT_TYPES
137 const u32 nfs4_fs_locations_bitmap[2] = {
139 | FATTR4_WORD0_CHANGE
142 | FATTR4_WORD0_FILEID
143 | FATTR4_WORD0_FS_LOCATIONS,
145 | FATTR4_WORD1_NUMLINKS
147 | FATTR4_WORD1_OWNER_GROUP
148 | FATTR4_WORD1_RAWDEV
149 | FATTR4_WORD1_SPACE_USED
150 | FATTR4_WORD1_TIME_ACCESS
151 | FATTR4_WORD1_TIME_METADATA
152 | FATTR4_WORD1_TIME_MODIFY
153 | FATTR4_WORD1_MOUNTED_ON_FILEID
156 static void nfs4_setup_readdir(u64 cookie, __be32 *verifier, struct dentry *dentry,
157 struct nfs4_readdir_arg *readdir)
161 BUG_ON(readdir->count < 80);
163 readdir->cookie = cookie;
164 memcpy(&readdir->verifier, verifier, sizeof(readdir->verifier));
169 memset(&readdir->verifier, 0, sizeof(readdir->verifier));
174 * NFSv4 servers do not return entries for '.' and '..'
175 * Therefore, we fake these entries here. We let '.'
176 * have cookie 0 and '..' have cookie 1. Note that
177 * when talking to the server, we always send cookie 0
180 start = p = kmap_atomic(*readdir->pages, KM_USER0);
183 *p++ = xdr_one; /* next */
184 *p++ = xdr_zero; /* cookie, first word */
185 *p++ = xdr_one; /* cookie, second word */
186 *p++ = xdr_one; /* entry len */
187 memcpy(p, ".\0\0\0", 4); /* entry */
189 *p++ = xdr_one; /* bitmap length */
190 *p++ = htonl(FATTR4_WORD0_FILEID); /* bitmap */
191 *p++ = htonl(8); /* attribute buffer length */
192 p = xdr_encode_hyper(p, NFS_FILEID(dentry->d_inode));
195 *p++ = xdr_one; /* next */
196 *p++ = xdr_zero; /* cookie, first word */
197 *p++ = xdr_two; /* cookie, second word */
198 *p++ = xdr_two; /* entry len */
199 memcpy(p, "..\0\0", 4); /* entry */
201 *p++ = xdr_one; /* bitmap length */
202 *p++ = htonl(FATTR4_WORD0_FILEID); /* bitmap */
203 *p++ = htonl(8); /* attribute buffer length */
204 p = xdr_encode_hyper(p, NFS_FILEID(dentry->d_parent->d_inode));
206 readdir->pgbase = (char *)p - (char *)start;
207 readdir->count -= readdir->pgbase;
208 kunmap_atomic(start, KM_USER0);
211 static int nfs4_wait_clnt_recover(struct nfs_client *clp)
217 res = wait_on_bit(&clp->cl_state, NFS4CLNT_MANAGER_RUNNING,
218 nfs_wait_bit_killable, TASK_KILLABLE);
222 static int nfs4_delay(struct rpc_clnt *clnt, long *timeout)
229 *timeout = NFS4_POLL_RETRY_MIN;
230 if (*timeout > NFS4_POLL_RETRY_MAX)
231 *timeout = NFS4_POLL_RETRY_MAX;
232 schedule_timeout_killable(*timeout);
233 if (fatal_signal_pending(current))
239 /* This is the error handling routine for processes that are allowed
242 static int nfs4_handle_exception(const struct nfs_server *server, int errorcode, struct nfs4_exception *exception)
244 struct nfs_client *clp = server->nfs_client;
245 struct nfs4_state *state = exception->state;
248 exception->retry = 0;
252 case -NFS4ERR_ADMIN_REVOKED:
253 case -NFS4ERR_BAD_STATEID:
254 case -NFS4ERR_OPENMODE:
257 nfs4_state_mark_reclaim_nograce(clp, state);
258 goto do_state_recovery;
259 case -NFS4ERR_STALE_STATEID:
260 case -NFS4ERR_STALE_CLIENTID:
261 case -NFS4ERR_EXPIRED:
262 goto do_state_recovery;
263 #if defined(CONFIG_NFS_V4_1)
264 case -NFS4ERR_BADSESSION:
265 case -NFS4ERR_BADSLOT:
266 case -NFS4ERR_BAD_HIGH_SLOT:
267 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION:
268 case -NFS4ERR_DEADSESSION:
269 case -NFS4ERR_SEQ_FALSE_RETRY:
270 case -NFS4ERR_SEQ_MISORDERED:
271 dprintk("%s ERROR: %d Reset session\n", __func__,
273 nfs4_schedule_state_recovery(clp);
274 exception->retry = 1;
276 #endif /* defined(CONFIG_NFS_V4_1) */
277 case -NFS4ERR_FILE_OPEN:
278 if (exception->timeout > HZ) {
279 /* We have retried a decent amount, time to
288 ret = nfs4_delay(server->client, &exception->timeout);
291 case -NFS4ERR_OLD_STATEID:
292 exception->retry = 1;
294 /* We failed to handle the error */
295 return nfs4_map_errors(ret);
297 nfs4_schedule_state_recovery(clp);
298 ret = nfs4_wait_clnt_recover(clp);
300 exception->retry = 1;
305 static void do_renew_lease(struct nfs_client *clp, unsigned long timestamp)
307 spin_lock(&clp->cl_lock);
308 if (time_before(clp->cl_last_renewal,timestamp))
309 clp->cl_last_renewal = timestamp;
310 spin_unlock(&clp->cl_lock);
313 static void renew_lease(const struct nfs_server *server, unsigned long timestamp)
315 do_renew_lease(server->nfs_client, timestamp);
318 #if defined(CONFIG_NFS_V4_1)
321 * nfs4_free_slot - free a slot and efficiently update slot table.
323 * freeing a slot is trivially done by clearing its respective bit
325 * If the freed slotid equals highest_used_slotid we want to update it
326 * so that the server would be able to size down the slot table if needed,
327 * otherwise we know that the highest_used_slotid is still in use.
328 * When updating highest_used_slotid there may be "holes" in the bitmap
329 * so we need to scan down from highest_used_slotid to 0 looking for the now
330 * highest slotid in use.
331 * If none found, highest_used_slotid is set to -1.
333 * Must be called while holding tbl->slot_tbl_lock
336 nfs4_free_slot(struct nfs4_slot_table *tbl, struct nfs4_slot *free_slot)
338 int free_slotid = free_slot - tbl->slots;
339 int slotid = free_slotid;
341 BUG_ON(slotid < 0 || slotid >= NFS4_MAX_SLOT_TABLE);
342 /* clear used bit in bitmap */
343 __clear_bit(slotid, tbl->used_slots);
345 /* update highest_used_slotid when it is freed */
346 if (slotid == tbl->highest_used_slotid) {
347 slotid = find_last_bit(tbl->used_slots, tbl->max_slots);
348 if (slotid < tbl->max_slots)
349 tbl->highest_used_slotid = slotid;
351 tbl->highest_used_slotid = -1;
353 dprintk("%s: free_slotid %u highest_used_slotid %d\n", __func__,
354 free_slotid, tbl->highest_used_slotid);
358 * Signal state manager thread if session is drained
360 static void nfs41_check_drain_session_complete(struct nfs4_session *ses)
362 struct rpc_task *task;
364 if (!test_bit(NFS4_SESSION_DRAINING, &ses->session_state)) {
365 task = rpc_wake_up_next(&ses->fc_slot_table.slot_tbl_waitq);
367 rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED);
371 if (ses->fc_slot_table.highest_used_slotid != -1)
374 dprintk("%s COMPLETE: Session Drained\n", __func__);
375 complete(&ses->complete);
378 static void nfs41_sequence_free_slot(struct nfs4_sequence_res *res)
380 struct nfs4_slot_table *tbl;
382 tbl = &res->sr_session->fc_slot_table;
384 /* just wake up the next guy waiting since
385 * we may have not consumed a slot after all */
386 dprintk("%s: No slot\n", __func__);
390 spin_lock(&tbl->slot_tbl_lock);
391 nfs4_free_slot(tbl, res->sr_slot);
392 nfs41_check_drain_session_complete(res->sr_session);
393 spin_unlock(&tbl->slot_tbl_lock);
397 static int nfs41_sequence_done(struct rpc_task *task, struct nfs4_sequence_res *res)
399 unsigned long timestamp;
400 struct nfs_client *clp;
403 * sr_status remains 1 if an RPC level error occurred. The server
404 * may or may not have processed the sequence operation..
405 * Proceed as if the server received and processed the sequence
408 if (res->sr_status == 1)
409 res->sr_status = NFS_OK;
411 /* -ERESTARTSYS can result in skipping nfs41_sequence_setup */
415 /* Check the SEQUENCE operation status */
416 switch (res->sr_status) {
418 /* Update the slot's sequence and clientid lease timer */
419 ++res->sr_slot->seq_nr;
420 timestamp = res->sr_renewal_time;
421 clp = res->sr_session->clp;
422 do_renew_lease(clp, timestamp);
423 /* Check sequence flags */
424 if (atomic_read(&clp->cl_count) > 1)
425 nfs41_handle_sequence_flag_errors(clp, res->sr_status_flags);
428 /* The server detected a resend of the RPC call and
429 * returned NFS4ERR_DELAY as per Section 2.10.6.2
432 dprintk("%s: slot=%ld seq=%d: Operation in progress\n",
434 res->sr_slot - res->sr_session->fc_slot_table.slots,
435 res->sr_slot->seq_nr);
438 /* Just update the slot sequence no. */
439 ++res->sr_slot->seq_nr;
442 /* The session may be reset by one of the error handlers. */
443 dprintk("%s: Error %d free the slot \n", __func__, res->sr_status);
444 nfs41_sequence_free_slot(res);
447 if (!rpc_restart_call(task))
449 rpc_delay(task, NFS4_POLL_RETRY_MAX);
453 static int nfs4_sequence_done(struct rpc_task *task,
454 struct nfs4_sequence_res *res)
456 if (res->sr_session == NULL)
458 return nfs41_sequence_done(task, res);
462 * nfs4_find_slot - efficiently look for a free slot
464 * nfs4_find_slot looks for an unset bit in the used_slots bitmap.
465 * If found, we mark the slot as used, update the highest_used_slotid,
466 * and respectively set up the sequence operation args.
467 * The slot number is returned if found, or NFS4_MAX_SLOT_TABLE otherwise.
469 * Note: must be called with under the slot_tbl_lock.
472 nfs4_find_slot(struct nfs4_slot_table *tbl)
475 u8 ret_id = NFS4_MAX_SLOT_TABLE;
476 BUILD_BUG_ON((u8)NFS4_MAX_SLOT_TABLE != (int)NFS4_MAX_SLOT_TABLE);
478 dprintk("--> %s used_slots=%04lx highest_used=%d max_slots=%d\n",
479 __func__, tbl->used_slots[0], tbl->highest_used_slotid,
481 slotid = find_first_zero_bit(tbl->used_slots, tbl->max_slots);
482 if (slotid >= tbl->max_slots)
484 __set_bit(slotid, tbl->used_slots);
485 if (slotid > tbl->highest_used_slotid)
486 tbl->highest_used_slotid = slotid;
489 dprintk("<-- %s used_slots=%04lx highest_used=%d slotid=%d \n",
490 __func__, tbl->used_slots[0], tbl->highest_used_slotid, ret_id);
494 static int nfs41_setup_sequence(struct nfs4_session *session,
495 struct nfs4_sequence_args *args,
496 struct nfs4_sequence_res *res,
498 struct rpc_task *task)
500 struct nfs4_slot *slot;
501 struct nfs4_slot_table *tbl;
504 dprintk("--> %s\n", __func__);
505 /* slot already allocated? */
506 if (res->sr_slot != NULL)
509 tbl = &session->fc_slot_table;
511 spin_lock(&tbl->slot_tbl_lock);
512 if (test_bit(NFS4_SESSION_DRAINING, &session->session_state) &&
513 !rpc_task_has_priority(task, RPC_PRIORITY_PRIVILEGED)) {
515 * The state manager will wait until the slot table is empty.
516 * Schedule the reset thread
518 rpc_sleep_on(&tbl->slot_tbl_waitq, task, NULL);
519 spin_unlock(&tbl->slot_tbl_lock);
520 dprintk("%s Schedule Session Reset\n", __func__);
524 if (!rpc_queue_empty(&tbl->slot_tbl_waitq) &&
525 !rpc_task_has_priority(task, RPC_PRIORITY_PRIVILEGED)) {
526 rpc_sleep_on(&tbl->slot_tbl_waitq, task, NULL);
527 spin_unlock(&tbl->slot_tbl_lock);
528 dprintk("%s enforce FIFO order\n", __func__);
532 slotid = nfs4_find_slot(tbl);
533 if (slotid == NFS4_MAX_SLOT_TABLE) {
534 rpc_sleep_on(&tbl->slot_tbl_waitq, task, NULL);
535 spin_unlock(&tbl->slot_tbl_lock);
536 dprintk("<-- %s: no free slots\n", __func__);
539 spin_unlock(&tbl->slot_tbl_lock);
541 rpc_task_set_priority(task, RPC_PRIORITY_NORMAL);
542 slot = tbl->slots + slotid;
543 args->sa_session = session;
544 args->sa_slotid = slotid;
545 args->sa_cache_this = cache_reply;
547 dprintk("<-- %s slotid=%d seqid=%d\n", __func__, slotid, slot->seq_nr);
549 res->sr_session = session;
551 res->sr_renewal_time = jiffies;
552 res->sr_status_flags = 0;
554 * sr_status is only set in decode_sequence, and so will remain
555 * set to 1 if an rpc level failure occurs.
561 int nfs4_setup_sequence(const struct nfs_server *server,
562 struct nfs4_sequence_args *args,
563 struct nfs4_sequence_res *res,
565 struct rpc_task *task)
567 struct nfs4_session *session = nfs4_get_session(server);
570 if (session == NULL) {
571 args->sa_session = NULL;
572 res->sr_session = NULL;
576 dprintk("--> %s clp %p session %p sr_slot %ld\n",
577 __func__, session->clp, session, res->sr_slot ?
578 res->sr_slot - session->fc_slot_table.slots : -1);
580 ret = nfs41_setup_sequence(session, args, res, cache_reply,
583 dprintk("<-- %s status=%d\n", __func__, ret);
587 struct nfs41_call_sync_data {
588 const struct nfs_server *seq_server;
589 struct nfs4_sequence_args *seq_args;
590 struct nfs4_sequence_res *seq_res;
594 static void nfs41_call_sync_prepare(struct rpc_task *task, void *calldata)
596 struct nfs41_call_sync_data *data = calldata;
598 dprintk("--> %s data->seq_server %p\n", __func__, data->seq_server);
600 if (nfs4_setup_sequence(data->seq_server, data->seq_args,
601 data->seq_res, data->cache_reply, task))
603 rpc_call_start(task);
606 static void nfs41_call_priv_sync_prepare(struct rpc_task *task, void *calldata)
608 rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED);
609 nfs41_call_sync_prepare(task, calldata);
612 static void nfs41_call_sync_done(struct rpc_task *task, void *calldata)
614 struct nfs41_call_sync_data *data = calldata;
616 nfs41_sequence_done(task, data->seq_res);
619 struct rpc_call_ops nfs41_call_sync_ops = {
620 .rpc_call_prepare = nfs41_call_sync_prepare,
621 .rpc_call_done = nfs41_call_sync_done,
624 struct rpc_call_ops nfs41_call_priv_sync_ops = {
625 .rpc_call_prepare = nfs41_call_priv_sync_prepare,
626 .rpc_call_done = nfs41_call_sync_done,
629 static int nfs4_call_sync_sequence(struct nfs_server *server,
630 struct rpc_message *msg,
631 struct nfs4_sequence_args *args,
632 struct nfs4_sequence_res *res,
637 struct rpc_task *task;
638 struct nfs41_call_sync_data data = {
639 .seq_server = server,
642 .cache_reply = cache_reply,
644 struct rpc_task_setup task_setup = {
645 .rpc_client = server->client,
647 .callback_ops = &nfs41_call_sync_ops,
648 .callback_data = &data
653 task_setup.callback_ops = &nfs41_call_priv_sync_ops;
654 task = rpc_run_task(&task_setup);
658 ret = task->tk_status;
664 int _nfs4_call_sync_session(struct nfs_server *server,
665 struct rpc_message *msg,
666 struct nfs4_sequence_args *args,
667 struct nfs4_sequence_res *res,
670 return nfs4_call_sync_sequence(server, msg, args, res, cache_reply, 0);
674 static int nfs4_sequence_done(struct rpc_task *task,
675 struct nfs4_sequence_res *res)
679 #endif /* CONFIG_NFS_V4_1 */
681 int _nfs4_call_sync(struct nfs_server *server,
682 struct rpc_message *msg,
683 struct nfs4_sequence_args *args,
684 struct nfs4_sequence_res *res,
687 args->sa_session = res->sr_session = NULL;
688 return rpc_call_sync(server->client, msg, 0);
691 #define nfs4_call_sync(server, msg, args, res, cache_reply) \
692 (server)->nfs_client->cl_mvops->call_sync((server), (msg), &(args)->seq_args, \
693 &(res)->seq_res, (cache_reply))
695 static void update_changeattr(struct inode *dir, struct nfs4_change_info *cinfo)
697 struct nfs_inode *nfsi = NFS_I(dir);
699 spin_lock(&dir->i_lock);
700 nfsi->cache_validity |= NFS_INO_INVALID_ATTR|NFS_INO_REVAL_PAGECACHE|NFS_INO_INVALID_DATA;
701 if (!cinfo->atomic || cinfo->before != nfsi->change_attr)
702 nfs_force_lookup_revalidate(dir);
703 nfsi->change_attr = cinfo->after;
704 spin_unlock(&dir->i_lock);
707 struct nfs4_opendata {
709 struct nfs_openargs o_arg;
710 struct nfs_openres o_res;
711 struct nfs_open_confirmargs c_arg;
712 struct nfs_open_confirmres c_res;
713 struct nfs_fattr f_attr;
714 struct nfs_fattr dir_attr;
717 struct nfs4_state_owner *owner;
718 struct nfs4_state *state;
720 unsigned long timestamp;
721 unsigned int rpc_done : 1;
727 static void nfs4_init_opendata_res(struct nfs4_opendata *p)
729 p->o_res.f_attr = &p->f_attr;
730 p->o_res.dir_attr = &p->dir_attr;
731 p->o_res.seqid = p->o_arg.seqid;
732 p->c_res.seqid = p->c_arg.seqid;
733 p->o_res.server = p->o_arg.server;
734 nfs_fattr_init(&p->f_attr);
735 nfs_fattr_init(&p->dir_attr);
738 static struct nfs4_opendata *nfs4_opendata_alloc(struct path *path,
739 struct nfs4_state_owner *sp, fmode_t fmode, int flags,
740 const struct iattr *attrs,
743 struct dentry *parent = dget_parent(path->dentry);
744 struct inode *dir = parent->d_inode;
745 struct nfs_server *server = NFS_SERVER(dir);
746 struct nfs4_opendata *p;
748 p = kzalloc(sizeof(*p), gfp_mask);
751 p->o_arg.seqid = nfs_alloc_seqid(&sp->so_seqid, gfp_mask);
752 if (p->o_arg.seqid == NULL)
758 atomic_inc(&sp->so_count);
759 p->o_arg.fh = NFS_FH(dir);
760 p->o_arg.open_flags = flags;
761 p->o_arg.fmode = fmode & (FMODE_READ|FMODE_WRITE);
762 p->o_arg.clientid = server->nfs_client->cl_clientid;
763 p->o_arg.id = sp->so_owner_id.id;
764 p->o_arg.name = &p->path.dentry->d_name;
765 p->o_arg.server = server;
766 p->o_arg.bitmask = server->attr_bitmask;
767 p->o_arg.claim = NFS4_OPEN_CLAIM_NULL;
768 if (flags & O_CREAT) {
771 p->o_arg.u.attrs = &p->attrs;
772 memcpy(&p->attrs, attrs, sizeof(p->attrs));
773 s = (u32 *) p->o_arg.u.verifier.data;
777 p->c_arg.fh = &p->o_res.fh;
778 p->c_arg.stateid = &p->o_res.stateid;
779 p->c_arg.seqid = p->o_arg.seqid;
780 nfs4_init_opendata_res(p);
790 static void nfs4_opendata_free(struct kref *kref)
792 struct nfs4_opendata *p = container_of(kref,
793 struct nfs4_opendata, kref);
795 nfs_free_seqid(p->o_arg.seqid);
796 if (p->state != NULL)
797 nfs4_put_open_state(p->state);
798 nfs4_put_state_owner(p->owner);
804 static void nfs4_opendata_put(struct nfs4_opendata *p)
807 kref_put(&p->kref, nfs4_opendata_free);
810 static int nfs4_wait_for_completion_rpc_task(struct rpc_task *task)
814 ret = rpc_wait_for_completion_task(task);
818 static int can_open_cached(struct nfs4_state *state, fmode_t mode, int open_mode)
822 if (open_mode & O_EXCL)
824 switch (mode & (FMODE_READ|FMODE_WRITE)) {
826 ret |= test_bit(NFS_O_RDONLY_STATE, &state->flags) != 0
827 && state->n_rdonly != 0;
830 ret |= test_bit(NFS_O_WRONLY_STATE, &state->flags) != 0
831 && state->n_wronly != 0;
833 case FMODE_READ|FMODE_WRITE:
834 ret |= test_bit(NFS_O_RDWR_STATE, &state->flags) != 0
835 && state->n_rdwr != 0;
841 static int can_open_delegated(struct nfs_delegation *delegation, fmode_t fmode)
843 if ((delegation->type & fmode) != fmode)
845 if (test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags))
847 nfs_mark_delegation_referenced(delegation);
851 static void update_open_stateflags(struct nfs4_state *state, fmode_t fmode)
860 case FMODE_READ|FMODE_WRITE:
863 nfs4_state_set_mode_locked(state, state->state | fmode);
866 static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode)
868 if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0)
869 memcpy(state->stateid.data, stateid->data, sizeof(state->stateid.data));
870 memcpy(state->open_stateid.data, stateid->data, sizeof(state->open_stateid.data));
873 set_bit(NFS_O_RDONLY_STATE, &state->flags);
876 set_bit(NFS_O_WRONLY_STATE, &state->flags);
878 case FMODE_READ|FMODE_WRITE:
879 set_bit(NFS_O_RDWR_STATE, &state->flags);
883 static void nfs_set_open_stateid(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode)
885 write_seqlock(&state->seqlock);
886 nfs_set_open_stateid_locked(state, stateid, fmode);
887 write_sequnlock(&state->seqlock);
890 static void __update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, const nfs4_stateid *deleg_stateid, fmode_t fmode)
893 * Protect the call to nfs4_state_set_mode_locked and
894 * serialise the stateid update
896 write_seqlock(&state->seqlock);
897 if (deleg_stateid != NULL) {
898 memcpy(state->stateid.data, deleg_stateid->data, sizeof(state->stateid.data));
899 set_bit(NFS_DELEGATED_STATE, &state->flags);
901 if (open_stateid != NULL)
902 nfs_set_open_stateid_locked(state, open_stateid, fmode);
903 write_sequnlock(&state->seqlock);
904 spin_lock(&state->owner->so_lock);
905 update_open_stateflags(state, fmode);
906 spin_unlock(&state->owner->so_lock);
909 static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, nfs4_stateid *delegation, fmode_t fmode)
911 struct nfs_inode *nfsi = NFS_I(state->inode);
912 struct nfs_delegation *deleg_cur;
915 fmode &= (FMODE_READ|FMODE_WRITE);
918 deleg_cur = rcu_dereference(nfsi->delegation);
919 if (deleg_cur == NULL)
922 spin_lock(&deleg_cur->lock);
923 if (nfsi->delegation != deleg_cur ||
924 (deleg_cur->type & fmode) != fmode)
925 goto no_delegation_unlock;
927 if (delegation == NULL)
928 delegation = &deleg_cur->stateid;
929 else if (memcmp(deleg_cur->stateid.data, delegation->data, NFS4_STATEID_SIZE) != 0)
930 goto no_delegation_unlock;
932 nfs_mark_delegation_referenced(deleg_cur);
933 __update_open_stateid(state, open_stateid, &deleg_cur->stateid, fmode);
935 no_delegation_unlock:
936 spin_unlock(&deleg_cur->lock);
940 if (!ret && open_stateid != NULL) {
941 __update_open_stateid(state, open_stateid, NULL, fmode);
949 static void nfs4_return_incompatible_delegation(struct inode *inode, fmode_t fmode)
951 struct nfs_delegation *delegation;
954 delegation = rcu_dereference(NFS_I(inode)->delegation);
955 if (delegation == NULL || (delegation->type & fmode) == fmode) {
960 nfs_inode_return_delegation(inode);
963 static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata)
965 struct nfs4_state *state = opendata->state;
966 struct nfs_inode *nfsi = NFS_I(state->inode);
967 struct nfs_delegation *delegation;
968 int open_mode = opendata->o_arg.open_flags & O_EXCL;
969 fmode_t fmode = opendata->o_arg.fmode;
970 nfs4_stateid stateid;
974 if (can_open_cached(state, fmode, open_mode)) {
975 spin_lock(&state->owner->so_lock);
976 if (can_open_cached(state, fmode, open_mode)) {
977 update_open_stateflags(state, fmode);
978 spin_unlock(&state->owner->so_lock);
979 goto out_return_state;
981 spin_unlock(&state->owner->so_lock);
984 delegation = rcu_dereference(nfsi->delegation);
985 if (delegation == NULL ||
986 !can_open_delegated(delegation, fmode)) {
990 /* Save the delegation */
991 memcpy(stateid.data, delegation->stateid.data, sizeof(stateid.data));
993 ret = nfs_may_open(state->inode, state->owner->so_cred, open_mode);
998 /* Try to update the stateid using the delegation */
999 if (update_open_stateid(state, NULL, &stateid, fmode))
1000 goto out_return_state;
1003 return ERR_PTR(ret);
1005 atomic_inc(&state->count);
1009 static struct nfs4_state *nfs4_opendata_to_nfs4_state(struct nfs4_opendata *data)
1011 struct inode *inode;
1012 struct nfs4_state *state = NULL;
1013 struct nfs_delegation *delegation;
1016 if (!data->rpc_done) {
1017 state = nfs4_try_open_cached(data);
1022 if (!(data->f_attr.valid & NFS_ATTR_FATTR))
1024 inode = nfs_fhget(data->dir->d_sb, &data->o_res.fh, &data->f_attr);
1025 ret = PTR_ERR(inode);
1029 state = nfs4_get_open_state(inode, data->owner);
1032 if (data->o_res.delegation_type != 0) {
1033 int delegation_flags = 0;
1036 delegation = rcu_dereference(NFS_I(inode)->delegation);
1038 delegation_flags = delegation->flags;
1040 if ((delegation_flags & 1UL<<NFS_DELEGATION_NEED_RECLAIM) == 0)
1041 nfs_inode_set_delegation(state->inode,
1042 data->owner->so_cred,
1045 nfs_inode_reclaim_delegation(state->inode,
1046 data->owner->so_cred,
1050 update_open_stateid(state, &data->o_res.stateid, NULL,
1058 return ERR_PTR(ret);
1061 static struct nfs_open_context *nfs4_state_find_open_context(struct nfs4_state *state)
1063 struct nfs_inode *nfsi = NFS_I(state->inode);
1064 struct nfs_open_context *ctx;
1066 spin_lock(&state->inode->i_lock);
1067 list_for_each_entry(ctx, &nfsi->open_files, list) {
1068 if (ctx->state != state)
1070 get_nfs_open_context(ctx);
1071 spin_unlock(&state->inode->i_lock);
1074 spin_unlock(&state->inode->i_lock);
1075 return ERR_PTR(-ENOENT);
1078 static struct nfs4_opendata *nfs4_open_recoverdata_alloc(struct nfs_open_context *ctx, struct nfs4_state *state)
1080 struct nfs4_opendata *opendata;
1082 opendata = nfs4_opendata_alloc(&ctx->path, state->owner, 0, 0, NULL, GFP_NOFS);
1083 if (opendata == NULL)
1084 return ERR_PTR(-ENOMEM);
1085 opendata->state = state;
1086 atomic_inc(&state->count);
1090 static int nfs4_open_recover_helper(struct nfs4_opendata *opendata, fmode_t fmode, struct nfs4_state **res)
1092 struct nfs4_state *newstate;
1095 opendata->o_arg.open_flags = 0;
1096 opendata->o_arg.fmode = fmode;
1097 memset(&opendata->o_res, 0, sizeof(opendata->o_res));
1098 memset(&opendata->c_res, 0, sizeof(opendata->c_res));
1099 nfs4_init_opendata_res(opendata);
1100 ret = _nfs4_recover_proc_open(opendata);
1103 newstate = nfs4_opendata_to_nfs4_state(opendata);
1104 if (IS_ERR(newstate))
1105 return PTR_ERR(newstate);
1106 nfs4_close_state(&opendata->path, newstate, fmode);
1111 static int nfs4_open_recover(struct nfs4_opendata *opendata, struct nfs4_state *state)
1113 struct nfs4_state *newstate;
1116 /* memory barrier prior to reading state->n_* */
1117 clear_bit(NFS_DELEGATED_STATE, &state->flags);
1119 if (state->n_rdwr != 0) {
1120 clear_bit(NFS_O_RDWR_STATE, &state->flags);
1121 ret = nfs4_open_recover_helper(opendata, FMODE_READ|FMODE_WRITE, &newstate);
1124 if (newstate != state)
1127 if (state->n_wronly != 0) {
1128 clear_bit(NFS_O_WRONLY_STATE, &state->flags);
1129 ret = nfs4_open_recover_helper(opendata, FMODE_WRITE, &newstate);
1132 if (newstate != state)
1135 if (state->n_rdonly != 0) {
1136 clear_bit(NFS_O_RDONLY_STATE, &state->flags);
1137 ret = nfs4_open_recover_helper(opendata, FMODE_READ, &newstate);
1140 if (newstate != state)
1144 * We may have performed cached opens for all three recoveries.
1145 * Check if we need to update the current stateid.
1147 if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0 &&
1148 memcmp(state->stateid.data, state->open_stateid.data, sizeof(state->stateid.data)) != 0) {
1149 write_seqlock(&state->seqlock);
1150 if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0)
1151 memcpy(state->stateid.data, state->open_stateid.data, sizeof(state->stateid.data));
1152 write_sequnlock(&state->seqlock);
1159 * reclaim state on the server after a reboot.
1161 static int _nfs4_do_open_reclaim(struct nfs_open_context *ctx, struct nfs4_state *state)
1163 struct nfs_delegation *delegation;
1164 struct nfs4_opendata *opendata;
1165 fmode_t delegation_type = 0;
1168 opendata = nfs4_open_recoverdata_alloc(ctx, state);
1169 if (IS_ERR(opendata))
1170 return PTR_ERR(opendata);
1171 opendata->o_arg.claim = NFS4_OPEN_CLAIM_PREVIOUS;
1172 opendata->o_arg.fh = NFS_FH(state->inode);
1174 delegation = rcu_dereference(NFS_I(state->inode)->delegation);
1175 if (delegation != NULL && test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags) != 0)
1176 delegation_type = delegation->type;
1178 opendata->o_arg.u.delegation_type = delegation_type;
1179 status = nfs4_open_recover(opendata, state);
1180 nfs4_opendata_put(opendata);
1184 static int nfs4_do_open_reclaim(struct nfs_open_context *ctx, struct nfs4_state *state)
1186 struct nfs_server *server = NFS_SERVER(state->inode);
1187 struct nfs4_exception exception = { };
1190 err = _nfs4_do_open_reclaim(ctx, state);
1191 if (err != -NFS4ERR_DELAY)
1193 nfs4_handle_exception(server, err, &exception);
1194 } while (exception.retry);
1198 static int nfs4_open_reclaim(struct nfs4_state_owner *sp, struct nfs4_state *state)
1200 struct nfs_open_context *ctx;
1203 ctx = nfs4_state_find_open_context(state);
1205 return PTR_ERR(ctx);
1206 ret = nfs4_do_open_reclaim(ctx, state);
1207 put_nfs_open_context(ctx);
1211 static int _nfs4_open_delegation_recall(struct nfs_open_context *ctx, struct nfs4_state *state, const nfs4_stateid *stateid)
1213 struct nfs4_opendata *opendata;
1216 opendata = nfs4_open_recoverdata_alloc(ctx, state);
1217 if (IS_ERR(opendata))
1218 return PTR_ERR(opendata);
1219 opendata->o_arg.claim = NFS4_OPEN_CLAIM_DELEGATE_CUR;
1220 memcpy(opendata->o_arg.u.delegation.data, stateid->data,
1221 sizeof(opendata->o_arg.u.delegation.data));
1222 ret = nfs4_open_recover(opendata, state);
1223 nfs4_opendata_put(opendata);
1227 int nfs4_open_delegation_recall(struct nfs_open_context *ctx, struct nfs4_state *state, const nfs4_stateid *stateid)
1229 struct nfs4_exception exception = { };
1230 struct nfs_server *server = NFS_SERVER(state->inode);
1233 err = _nfs4_open_delegation_recall(ctx, state, stateid);
1239 case -NFS4ERR_BADSESSION:
1240 case -NFS4ERR_BADSLOT:
1241 case -NFS4ERR_BAD_HIGH_SLOT:
1242 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION:
1243 case -NFS4ERR_DEADSESSION:
1244 nfs4_schedule_state_recovery(
1245 server->nfs_client);
1247 case -NFS4ERR_STALE_CLIENTID:
1248 case -NFS4ERR_STALE_STATEID:
1249 case -NFS4ERR_EXPIRED:
1250 /* Don't recall a delegation if it was lost */
1251 nfs4_schedule_state_recovery(server->nfs_client);
1255 * The show must go on: exit, but mark the
1256 * stateid as needing recovery.
1258 case -NFS4ERR_ADMIN_REVOKED:
1259 case -NFS4ERR_BAD_STATEID:
1260 nfs4_state_mark_reclaim_nograce(server->nfs_client, state);
1263 * User RPCSEC_GSS context has expired.
1264 * We cannot recover this stateid now, so
1265 * skip it and allow recovery thread to
1272 err = nfs4_handle_exception(server, err, &exception);
1273 } while (exception.retry);
1278 static void nfs4_open_confirm_done(struct rpc_task *task, void *calldata)
1280 struct nfs4_opendata *data = calldata;
1282 data->rpc_status = task->tk_status;
1283 if (data->rpc_status == 0) {
1284 memcpy(data->o_res.stateid.data, data->c_res.stateid.data,
1285 sizeof(data->o_res.stateid.data));
1286 nfs_confirm_seqid(&data->owner->so_seqid, 0);
1287 renew_lease(data->o_res.server, data->timestamp);
1292 static void nfs4_open_confirm_release(void *calldata)
1294 struct nfs4_opendata *data = calldata;
1295 struct nfs4_state *state = NULL;
1297 /* If this request hasn't been cancelled, do nothing */
1298 if (data->cancelled == 0)
1300 /* In case of error, no cleanup! */
1301 if (!data->rpc_done)
1303 state = nfs4_opendata_to_nfs4_state(data);
1305 nfs4_close_state(&data->path, state, data->o_arg.fmode);
1307 nfs4_opendata_put(data);
1310 static const struct rpc_call_ops nfs4_open_confirm_ops = {
1311 .rpc_call_done = nfs4_open_confirm_done,
1312 .rpc_release = nfs4_open_confirm_release,
1316 * Note: On error, nfs4_proc_open_confirm will free the struct nfs4_opendata
1318 static int _nfs4_proc_open_confirm(struct nfs4_opendata *data)
1320 struct nfs_server *server = NFS_SERVER(data->dir->d_inode);
1321 struct rpc_task *task;
1322 struct rpc_message msg = {
1323 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_CONFIRM],
1324 .rpc_argp = &data->c_arg,
1325 .rpc_resp = &data->c_res,
1326 .rpc_cred = data->owner->so_cred,
1328 struct rpc_task_setup task_setup_data = {
1329 .rpc_client = server->client,
1330 .rpc_message = &msg,
1331 .callback_ops = &nfs4_open_confirm_ops,
1332 .callback_data = data,
1333 .workqueue = nfsiod_workqueue,
1334 .flags = RPC_TASK_ASYNC,
1338 kref_get(&data->kref);
1340 data->rpc_status = 0;
1341 data->timestamp = jiffies;
1342 task = rpc_run_task(&task_setup_data);
1344 return PTR_ERR(task);
1345 status = nfs4_wait_for_completion_rpc_task(task);
1347 data->cancelled = 1;
1350 status = data->rpc_status;
1355 static void nfs4_open_prepare(struct rpc_task *task, void *calldata)
1357 struct nfs4_opendata *data = calldata;
1358 struct nfs4_state_owner *sp = data->owner;
1360 if (nfs_wait_on_sequence(data->o_arg.seqid, task) != 0)
1363 * Check if we still need to send an OPEN call, or if we can use
1364 * a delegation instead.
1366 if (data->state != NULL) {
1367 struct nfs_delegation *delegation;
1369 if (can_open_cached(data->state, data->o_arg.fmode, data->o_arg.open_flags))
1372 delegation = rcu_dereference(NFS_I(data->state->inode)->delegation);
1373 if (delegation != NULL &&
1374 test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags) == 0) {
1380 /* Update sequence id. */
1381 data->o_arg.id = sp->so_owner_id.id;
1382 data->o_arg.clientid = sp->so_server->nfs_client->cl_clientid;
1383 if (data->o_arg.claim == NFS4_OPEN_CLAIM_PREVIOUS) {
1384 task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_NOATTR];
1385 nfs_copy_fh(&data->o_res.fh, data->o_arg.fh);
1387 data->timestamp = jiffies;
1388 if (nfs4_setup_sequence(data->o_arg.server,
1389 &data->o_arg.seq_args,
1390 &data->o_res.seq_res, 1, task))
1392 rpc_call_start(task);
1395 task->tk_action = NULL;
1399 static void nfs4_recover_open_prepare(struct rpc_task *task, void *calldata)
1401 rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED);
1402 nfs4_open_prepare(task, calldata);
1405 static void nfs4_open_done(struct rpc_task *task, void *calldata)
1407 struct nfs4_opendata *data = calldata;
1409 data->rpc_status = task->tk_status;
1411 if (!nfs4_sequence_done(task, &data->o_res.seq_res))
1414 if (task->tk_status == 0) {
1415 switch (data->o_res.f_attr->mode & S_IFMT) {
1419 data->rpc_status = -ELOOP;
1422 data->rpc_status = -EISDIR;
1425 data->rpc_status = -ENOTDIR;
1427 renew_lease(data->o_res.server, data->timestamp);
1428 if (!(data->o_res.rflags & NFS4_OPEN_RESULT_CONFIRM))
1429 nfs_confirm_seqid(&data->owner->so_seqid, 0);
1434 static void nfs4_open_release(void *calldata)
1436 struct nfs4_opendata *data = calldata;
1437 struct nfs4_state *state = NULL;
1439 /* If this request hasn't been cancelled, do nothing */
1440 if (data->cancelled == 0)
1442 /* In case of error, no cleanup! */
1443 if (data->rpc_status != 0 || !data->rpc_done)
1445 /* In case we need an open_confirm, no cleanup! */
1446 if (data->o_res.rflags & NFS4_OPEN_RESULT_CONFIRM)
1448 state = nfs4_opendata_to_nfs4_state(data);
1450 nfs4_close_state(&data->path, state, data->o_arg.fmode);
1452 nfs4_opendata_put(data);
1455 static const struct rpc_call_ops nfs4_open_ops = {
1456 .rpc_call_prepare = nfs4_open_prepare,
1457 .rpc_call_done = nfs4_open_done,
1458 .rpc_release = nfs4_open_release,
1461 static const struct rpc_call_ops nfs4_recover_open_ops = {
1462 .rpc_call_prepare = nfs4_recover_open_prepare,
1463 .rpc_call_done = nfs4_open_done,
1464 .rpc_release = nfs4_open_release,
1467 static int nfs4_run_open_task(struct nfs4_opendata *data, int isrecover)
1469 struct inode *dir = data->dir->d_inode;
1470 struct nfs_server *server = NFS_SERVER(dir);
1471 struct nfs_openargs *o_arg = &data->o_arg;
1472 struct nfs_openres *o_res = &data->o_res;
1473 struct rpc_task *task;
1474 struct rpc_message msg = {
1475 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN],
1478 .rpc_cred = data->owner->so_cred,
1480 struct rpc_task_setup task_setup_data = {
1481 .rpc_client = server->client,
1482 .rpc_message = &msg,
1483 .callback_ops = &nfs4_open_ops,
1484 .callback_data = data,
1485 .workqueue = nfsiod_workqueue,
1486 .flags = RPC_TASK_ASYNC,
1490 kref_get(&data->kref);
1492 data->rpc_status = 0;
1493 data->cancelled = 0;
1495 task_setup_data.callback_ops = &nfs4_recover_open_ops;
1496 task = rpc_run_task(&task_setup_data);
1498 return PTR_ERR(task);
1499 status = nfs4_wait_for_completion_rpc_task(task);
1501 data->cancelled = 1;
1504 status = data->rpc_status;
1510 static int _nfs4_recover_proc_open(struct nfs4_opendata *data)
1512 struct inode *dir = data->dir->d_inode;
1513 struct nfs_openres *o_res = &data->o_res;
1516 status = nfs4_run_open_task(data, 1);
1517 if (status != 0 || !data->rpc_done)
1520 nfs_refresh_inode(dir, o_res->dir_attr);
1522 if (o_res->rflags & NFS4_OPEN_RESULT_CONFIRM) {
1523 status = _nfs4_proc_open_confirm(data);
1532 * Note: On error, nfs4_proc_open will free the struct nfs4_opendata
1534 static int _nfs4_proc_open(struct nfs4_opendata *data)
1536 struct inode *dir = data->dir->d_inode;
1537 struct nfs_server *server = NFS_SERVER(dir);
1538 struct nfs_openargs *o_arg = &data->o_arg;
1539 struct nfs_openres *o_res = &data->o_res;
1542 status = nfs4_run_open_task(data, 0);
1543 if (status != 0 || !data->rpc_done)
1546 if (o_arg->open_flags & O_CREAT) {
1547 update_changeattr(dir, &o_res->cinfo);
1548 nfs_post_op_update_inode(dir, o_res->dir_attr);
1550 nfs_refresh_inode(dir, o_res->dir_attr);
1551 if ((o_res->rflags & NFS4_OPEN_RESULT_LOCKTYPE_POSIX) == 0)
1552 server->caps &= ~NFS_CAP_POSIX_LOCK;
1553 if(o_res->rflags & NFS4_OPEN_RESULT_CONFIRM) {
1554 status = _nfs4_proc_open_confirm(data);
1558 if (!(o_res->f_attr->valid & NFS_ATTR_FATTR))
1559 _nfs4_proc_getattr(server, &o_res->fh, o_res->f_attr);
1563 static int nfs4_recover_expired_lease(struct nfs_server *server)
1565 struct nfs_client *clp = server->nfs_client;
1569 for (loop = NFS4_MAX_LOOP_ON_RECOVER; loop != 0; loop--) {
1570 ret = nfs4_wait_clnt_recover(clp);
1573 if (!test_bit(NFS4CLNT_LEASE_EXPIRED, &clp->cl_state) &&
1574 !test_bit(NFS4CLNT_CHECK_LEASE,&clp->cl_state))
1576 nfs4_schedule_state_recovery(clp);
1584 * reclaim state on the server after a network partition.
1585 * Assumes caller holds the appropriate lock
1587 static int _nfs4_open_expired(struct nfs_open_context *ctx, struct nfs4_state *state)
1589 struct nfs4_opendata *opendata;
1592 opendata = nfs4_open_recoverdata_alloc(ctx, state);
1593 if (IS_ERR(opendata))
1594 return PTR_ERR(opendata);
1595 ret = nfs4_open_recover(opendata, state);
1597 d_drop(ctx->path.dentry);
1598 nfs4_opendata_put(opendata);
1602 static int nfs4_do_open_expired(struct nfs_open_context *ctx, struct nfs4_state *state)
1604 struct nfs_server *server = NFS_SERVER(state->inode);
1605 struct nfs4_exception exception = { };
1609 err = _nfs4_open_expired(ctx, state);
1613 case -NFS4ERR_GRACE:
1614 case -NFS4ERR_DELAY:
1615 nfs4_handle_exception(server, err, &exception);
1618 } while (exception.retry);
1623 static int nfs4_open_expired(struct nfs4_state_owner *sp, struct nfs4_state *state)
1625 struct nfs_open_context *ctx;
1628 ctx = nfs4_state_find_open_context(state);
1630 return PTR_ERR(ctx);
1631 ret = nfs4_do_open_expired(ctx, state);
1632 put_nfs_open_context(ctx);
1637 * on an EXCLUSIVE create, the server should send back a bitmask with FATTR4-*
1638 * fields corresponding to attributes that were used to store the verifier.
1639 * Make sure we clobber those fields in the later setattr call
1641 static inline void nfs4_exclusive_attrset(struct nfs4_opendata *opendata, struct iattr *sattr)
1643 if ((opendata->o_res.attrset[1] & FATTR4_WORD1_TIME_ACCESS) &&
1644 !(sattr->ia_valid & ATTR_ATIME_SET))
1645 sattr->ia_valid |= ATTR_ATIME;
1647 if ((opendata->o_res.attrset[1] & FATTR4_WORD1_TIME_MODIFY) &&
1648 !(sattr->ia_valid & ATTR_MTIME_SET))
1649 sattr->ia_valid |= ATTR_MTIME;
1653 * Returns a referenced nfs4_state
1655 static int _nfs4_do_open(struct inode *dir, struct path *path, fmode_t fmode, int flags, struct iattr *sattr, struct rpc_cred *cred, struct nfs4_state **res)
1657 struct nfs4_state_owner *sp;
1658 struct nfs4_state *state = NULL;
1659 struct nfs_server *server = NFS_SERVER(dir);
1660 struct nfs4_opendata *opendata;
1663 /* Protect against reboot recovery conflicts */
1665 if (!(sp = nfs4_get_state_owner(server, cred))) {
1666 dprintk("nfs4_do_open: nfs4_get_state_owner failed!\n");
1669 status = nfs4_recover_expired_lease(server);
1671 goto err_put_state_owner;
1672 if (path->dentry->d_inode != NULL)
1673 nfs4_return_incompatible_delegation(path->dentry->d_inode, fmode);
1675 opendata = nfs4_opendata_alloc(path, sp, fmode, flags, sattr, GFP_KERNEL);
1676 if (opendata == NULL)
1677 goto err_put_state_owner;
1679 if (path->dentry->d_inode != NULL)
1680 opendata->state = nfs4_get_open_state(path->dentry->d_inode, sp);
1682 status = _nfs4_proc_open(opendata);
1684 goto err_opendata_put;
1686 state = nfs4_opendata_to_nfs4_state(opendata);
1687 status = PTR_ERR(state);
1689 goto err_opendata_put;
1690 if (server->caps & NFS_CAP_POSIX_LOCK)
1691 set_bit(NFS_STATE_POSIX_LOCKS, &state->flags);
1693 if (opendata->o_arg.open_flags & O_EXCL) {
1694 nfs4_exclusive_attrset(opendata, sattr);
1696 nfs_fattr_init(opendata->o_res.f_attr);
1697 status = nfs4_do_setattr(state->inode, cred,
1698 opendata->o_res.f_attr, sattr,
1701 nfs_setattr_update_inode(state->inode, sattr);
1702 nfs_post_op_update_inode(state->inode, opendata->o_res.f_attr);
1704 nfs4_opendata_put(opendata);
1705 nfs4_put_state_owner(sp);
1709 nfs4_opendata_put(opendata);
1710 err_put_state_owner:
1711 nfs4_put_state_owner(sp);
1718 static struct nfs4_state *nfs4_do_open(struct inode *dir, struct path *path, fmode_t fmode, int flags, struct iattr *sattr, struct rpc_cred *cred)
1720 struct nfs4_exception exception = { };
1721 struct nfs4_state *res;
1725 status = _nfs4_do_open(dir, path, fmode, flags, sattr, cred, &res);
1728 /* NOTE: BAD_SEQID means the server and client disagree about the
1729 * book-keeping w.r.t. state-changing operations
1730 * (OPEN/CLOSE/LOCK/LOCKU...)
1731 * It is actually a sign of a bug on the client or on the server.
1733 * If we receive a BAD_SEQID error in the particular case of
1734 * doing an OPEN, we assume that nfs_increment_open_seqid() will
1735 * have unhashed the old state_owner for us, and that we can
1736 * therefore safely retry using a new one. We should still warn
1737 * the user though...
1739 if (status == -NFS4ERR_BAD_SEQID) {
1740 printk(KERN_WARNING "NFS: v4 server %s "
1741 " returned a bad sequence-id error!\n",
1742 NFS_SERVER(dir)->nfs_client->cl_hostname);
1743 exception.retry = 1;
1747 * BAD_STATEID on OPEN means that the server cancelled our
1748 * state before it received the OPEN_CONFIRM.
1749 * Recover by retrying the request as per the discussion
1750 * on Page 181 of RFC3530.
1752 if (status == -NFS4ERR_BAD_STATEID) {
1753 exception.retry = 1;
1756 if (status == -EAGAIN) {
1757 /* We must have found a delegation */
1758 exception.retry = 1;
1761 res = ERR_PTR(nfs4_handle_exception(NFS_SERVER(dir),
1762 status, &exception));
1763 } while (exception.retry);
1767 static int _nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred,
1768 struct nfs_fattr *fattr, struct iattr *sattr,
1769 struct nfs4_state *state)
1771 struct nfs_server *server = NFS_SERVER(inode);
1772 struct nfs_setattrargs arg = {
1773 .fh = NFS_FH(inode),
1776 .bitmask = server->attr_bitmask,
1778 struct nfs_setattrres res = {
1782 struct rpc_message msg = {
1783 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETATTR],
1788 unsigned long timestamp = jiffies;
1791 nfs_fattr_init(fattr);
1793 if (nfs4_copy_delegation_stateid(&arg.stateid, inode)) {
1794 /* Use that stateid */
1795 } else if (state != NULL) {
1796 nfs4_copy_stateid(&arg.stateid, state, current->files, current->tgid);
1798 memcpy(&arg.stateid, &zero_stateid, sizeof(arg.stateid));
1800 status = nfs4_call_sync(server, &msg, &arg, &res, 1);
1801 if (status == 0 && state != NULL)
1802 renew_lease(server, timestamp);
1806 static int nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred,
1807 struct nfs_fattr *fattr, struct iattr *sattr,
1808 struct nfs4_state *state)
1810 struct nfs_server *server = NFS_SERVER(inode);
1811 struct nfs4_exception exception = { };
1814 err = nfs4_handle_exception(server,
1815 _nfs4_do_setattr(inode, cred, fattr, sattr, state),
1817 } while (exception.retry);
1821 struct nfs4_closedata {
1823 struct inode *inode;
1824 struct nfs4_state *state;
1825 struct nfs_closeargs arg;
1826 struct nfs_closeres res;
1827 struct nfs_fattr fattr;
1828 unsigned long timestamp;
1831 static void nfs4_free_closedata(void *data)
1833 struct nfs4_closedata *calldata = data;
1834 struct nfs4_state_owner *sp = calldata->state->owner;
1836 nfs4_put_open_state(calldata->state);
1837 nfs_free_seqid(calldata->arg.seqid);
1838 nfs4_put_state_owner(sp);
1839 path_put(&calldata->path);
1843 static void nfs4_close_clear_stateid_flags(struct nfs4_state *state,
1846 spin_lock(&state->owner->so_lock);
1847 if (!(fmode & FMODE_READ))
1848 clear_bit(NFS_O_RDONLY_STATE, &state->flags);
1849 if (!(fmode & FMODE_WRITE))
1850 clear_bit(NFS_O_WRONLY_STATE, &state->flags);
1851 clear_bit(NFS_O_RDWR_STATE, &state->flags);
1852 spin_unlock(&state->owner->so_lock);
1855 static void nfs4_close_done(struct rpc_task *task, void *data)
1857 struct nfs4_closedata *calldata = data;
1858 struct nfs4_state *state = calldata->state;
1859 struct nfs_server *server = NFS_SERVER(calldata->inode);
1861 if (!nfs4_sequence_done(task, &calldata->res.seq_res))
1863 /* hmm. we are done with the inode, and in the process of freeing
1864 * the state_owner. we keep this around to process errors
1866 switch (task->tk_status) {
1868 nfs_set_open_stateid(state, &calldata->res.stateid, 0);
1869 renew_lease(server, calldata->timestamp);
1870 nfs4_close_clear_stateid_flags(state,
1871 calldata->arg.fmode);
1873 case -NFS4ERR_STALE_STATEID:
1874 case -NFS4ERR_OLD_STATEID:
1875 case -NFS4ERR_BAD_STATEID:
1876 case -NFS4ERR_EXPIRED:
1877 if (calldata->arg.fmode == 0)
1880 if (nfs4_async_handle_error(task, server, state) == -EAGAIN)
1881 rpc_restart_call_prepare(task);
1883 nfs_release_seqid(calldata->arg.seqid);
1884 nfs_refresh_inode(calldata->inode, calldata->res.fattr);
1887 static void nfs4_close_prepare(struct rpc_task *task, void *data)
1889 struct nfs4_closedata *calldata = data;
1890 struct nfs4_state *state = calldata->state;
1893 if (nfs_wait_on_sequence(calldata->arg.seqid, task) != 0)
1896 task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_DOWNGRADE];
1897 calldata->arg.fmode = FMODE_READ|FMODE_WRITE;
1898 spin_lock(&state->owner->so_lock);
1899 /* Calculate the change in open mode */
1900 if (state->n_rdwr == 0) {
1901 if (state->n_rdonly == 0) {
1902 call_close |= test_bit(NFS_O_RDONLY_STATE, &state->flags);
1903 call_close |= test_bit(NFS_O_RDWR_STATE, &state->flags);
1904 calldata->arg.fmode &= ~FMODE_READ;
1906 if (state->n_wronly == 0) {
1907 call_close |= test_bit(NFS_O_WRONLY_STATE, &state->flags);
1908 call_close |= test_bit(NFS_O_RDWR_STATE, &state->flags);
1909 calldata->arg.fmode &= ~FMODE_WRITE;
1912 spin_unlock(&state->owner->so_lock);
1915 /* Note: exit _without_ calling nfs4_close_done */
1916 task->tk_action = NULL;
1920 if (calldata->arg.fmode == 0)
1921 task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CLOSE];
1923 nfs_fattr_init(calldata->res.fattr);
1924 calldata->timestamp = jiffies;
1925 if (nfs4_setup_sequence(NFS_SERVER(calldata->inode),
1926 &calldata->arg.seq_args, &calldata->res.seq_res,
1929 rpc_call_start(task);
1932 static const struct rpc_call_ops nfs4_close_ops = {
1933 .rpc_call_prepare = nfs4_close_prepare,
1934 .rpc_call_done = nfs4_close_done,
1935 .rpc_release = nfs4_free_closedata,
1939 * It is possible for data to be read/written from a mem-mapped file
1940 * after the sys_close call (which hits the vfs layer as a flush).
1941 * This means that we can't safely call nfsv4 close on a file until
1942 * the inode is cleared. This in turn means that we are not good
1943 * NFSv4 citizens - we do not indicate to the server to update the file's
1944 * share state even when we are done with one of the three share
1945 * stateid's in the inode.
1947 * NOTE: Caller must be holding the sp->so_owner semaphore!
1949 int nfs4_do_close(struct path *path, struct nfs4_state *state, gfp_t gfp_mask, int wait)
1951 struct nfs_server *server = NFS_SERVER(state->inode);
1952 struct nfs4_closedata *calldata;
1953 struct nfs4_state_owner *sp = state->owner;
1954 struct rpc_task *task;
1955 struct rpc_message msg = {
1956 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CLOSE],
1957 .rpc_cred = state->owner->so_cred,
1959 struct rpc_task_setup task_setup_data = {
1960 .rpc_client = server->client,
1961 .rpc_message = &msg,
1962 .callback_ops = &nfs4_close_ops,
1963 .workqueue = nfsiod_workqueue,
1964 .flags = RPC_TASK_ASYNC,
1966 int status = -ENOMEM;
1968 calldata = kzalloc(sizeof(*calldata), gfp_mask);
1969 if (calldata == NULL)
1971 calldata->inode = state->inode;
1972 calldata->state = state;
1973 calldata->arg.fh = NFS_FH(state->inode);
1974 calldata->arg.stateid = &state->open_stateid;
1975 /* Serialization for the sequence id */
1976 calldata->arg.seqid = nfs_alloc_seqid(&state->owner->so_seqid, gfp_mask);
1977 if (calldata->arg.seqid == NULL)
1978 goto out_free_calldata;
1979 calldata->arg.fmode = 0;
1980 calldata->arg.bitmask = server->cache_consistency_bitmask;
1981 calldata->res.fattr = &calldata->fattr;
1982 calldata->res.seqid = calldata->arg.seqid;
1983 calldata->res.server = server;
1985 calldata->path = *path;
1987 msg.rpc_argp = &calldata->arg,
1988 msg.rpc_resp = &calldata->res,
1989 task_setup_data.callback_data = calldata;
1990 task = rpc_run_task(&task_setup_data);
1992 return PTR_ERR(task);
1995 status = rpc_wait_for_completion_task(task);
2001 nfs4_put_open_state(state);
2002 nfs4_put_state_owner(sp);
2006 static struct inode *
2007 nfs4_atomic_open(struct inode *dir, struct nfs_open_context *ctx, int open_flags, struct iattr *attr)
2009 struct nfs4_state *state;
2011 /* Protect against concurrent sillydeletes */
2012 state = nfs4_do_open(dir, &ctx->path, ctx->mode, open_flags, attr, ctx->cred);
2014 return ERR_CAST(state);
2016 return igrab(state->inode);
2019 static void nfs4_close_context(struct nfs_open_context *ctx, int is_sync)
2021 if (ctx->state == NULL)
2024 nfs4_close_sync(&ctx->path, ctx->state, ctx->mode);
2026 nfs4_close_state(&ctx->path, ctx->state, ctx->mode);
2029 static int _nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *fhandle)
2031 struct nfs4_server_caps_arg args = {
2034 struct nfs4_server_caps_res res = {};
2035 struct rpc_message msg = {
2036 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SERVER_CAPS],
2042 status = nfs4_call_sync(server, &msg, &args, &res, 0);
2044 memcpy(server->attr_bitmask, res.attr_bitmask, sizeof(server->attr_bitmask));
2045 server->caps &= ~(NFS_CAP_ACLS|NFS_CAP_HARDLINKS|
2046 NFS_CAP_SYMLINKS|NFS_CAP_FILEID|
2047 NFS_CAP_MODE|NFS_CAP_NLINK|NFS_CAP_OWNER|
2048 NFS_CAP_OWNER_GROUP|NFS_CAP_ATIME|
2049 NFS_CAP_CTIME|NFS_CAP_MTIME);
2050 if (res.attr_bitmask[0] & FATTR4_WORD0_ACL)
2051 server->caps |= NFS_CAP_ACLS;
2052 if (res.has_links != 0)
2053 server->caps |= NFS_CAP_HARDLINKS;
2054 if (res.has_symlinks != 0)
2055 server->caps |= NFS_CAP_SYMLINKS;
2056 if (res.attr_bitmask[0] & FATTR4_WORD0_FILEID)
2057 server->caps |= NFS_CAP_FILEID;
2058 if (res.attr_bitmask[1] & FATTR4_WORD1_MODE)
2059 server->caps |= NFS_CAP_MODE;
2060 if (res.attr_bitmask[1] & FATTR4_WORD1_NUMLINKS)
2061 server->caps |= NFS_CAP_NLINK;
2062 if (res.attr_bitmask[1] & FATTR4_WORD1_OWNER)
2063 server->caps |= NFS_CAP_OWNER;
2064 if (res.attr_bitmask[1] & FATTR4_WORD1_OWNER_GROUP)
2065 server->caps |= NFS_CAP_OWNER_GROUP;
2066 if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_ACCESS)
2067 server->caps |= NFS_CAP_ATIME;
2068 if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_METADATA)
2069 server->caps |= NFS_CAP_CTIME;
2070 if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_MODIFY)
2071 server->caps |= NFS_CAP_MTIME;
2073 memcpy(server->cache_consistency_bitmask, res.attr_bitmask, sizeof(server->cache_consistency_bitmask));
2074 server->cache_consistency_bitmask[0] &= FATTR4_WORD0_CHANGE|FATTR4_WORD0_SIZE;
2075 server->cache_consistency_bitmask[1] &= FATTR4_WORD1_TIME_METADATA|FATTR4_WORD1_TIME_MODIFY;
2076 server->acl_bitmask = res.acl_bitmask;
2082 int nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *fhandle)
2084 struct nfs4_exception exception = { };
2087 err = nfs4_handle_exception(server,
2088 _nfs4_server_capabilities(server, fhandle),
2090 } while (exception.retry);
2094 static int _nfs4_lookup_root(struct nfs_server *server, struct nfs_fh *fhandle,
2095 struct nfs_fsinfo *info)
2097 struct nfs4_lookup_root_arg args = {
2098 .bitmask = nfs4_fattr_bitmap,
2100 struct nfs4_lookup_res res = {
2102 .fattr = info->fattr,
2105 struct rpc_message msg = {
2106 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOOKUP_ROOT],
2111 nfs_fattr_init(info->fattr);
2112 return nfs4_call_sync(server, &msg, &args, &res, 0);
2115 static int nfs4_lookup_root(struct nfs_server *server, struct nfs_fh *fhandle,
2116 struct nfs_fsinfo *info)
2118 struct nfs4_exception exception = { };
2121 err = nfs4_handle_exception(server,
2122 _nfs4_lookup_root(server, fhandle, info),
2124 } while (exception.retry);
2129 * get the file handle for the "/" directory on the server
2131 static int nfs4_proc_get_root(struct nfs_server *server, struct nfs_fh *fhandle,
2132 struct nfs_fsinfo *info)
2136 status = nfs4_lookup_root(server, fhandle, info);
2138 status = nfs4_server_capabilities(server, fhandle);
2140 status = nfs4_do_fsinfo(server, fhandle, info);
2141 return nfs4_map_errors(status);
2145 * Get locations and (maybe) other attributes of a referral.
2146 * Note that we'll actually follow the referral later when
2147 * we detect fsid mismatch in inode revalidation
2149 static int nfs4_get_referral(struct inode *dir, const struct qstr *name, struct nfs_fattr *fattr, struct nfs_fh *fhandle)
2151 int status = -ENOMEM;
2152 struct page *page = NULL;
2153 struct nfs4_fs_locations *locations = NULL;
2155 page = alloc_page(GFP_KERNEL);
2158 locations = kmalloc(sizeof(struct nfs4_fs_locations), GFP_KERNEL);
2159 if (locations == NULL)
2162 status = nfs4_proc_fs_locations(dir, name, locations, page);
2165 /* Make sure server returned a different fsid for the referral */
2166 if (nfs_fsid_equal(&NFS_SERVER(dir)->fsid, &locations->fattr.fsid)) {
2167 dprintk("%s: server did not return a different fsid for a referral at %s\n", __func__, name->name);
2172 memcpy(fattr, &locations->fattr, sizeof(struct nfs_fattr));
2173 fattr->valid |= NFS_ATTR_FATTR_V4_REFERRAL;
2175 fattr->mode = S_IFDIR;
2176 memset(fhandle, 0, sizeof(struct nfs_fh));
2184 static int _nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fattr *fattr)
2186 struct nfs4_getattr_arg args = {
2188 .bitmask = server->attr_bitmask,
2190 struct nfs4_getattr_res res = {
2194 struct rpc_message msg = {
2195 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETATTR],
2200 nfs_fattr_init(fattr);
2201 return nfs4_call_sync(server, &msg, &args, &res, 0);
2204 static int nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fattr *fattr)
2206 struct nfs4_exception exception = { };
2209 err = nfs4_handle_exception(server,
2210 _nfs4_proc_getattr(server, fhandle, fattr),
2212 } while (exception.retry);
2217 * The file is not closed if it is opened due to the a request to change
2218 * the size of the file. The open call will not be needed once the
2219 * VFS layer lookup-intents are implemented.
2221 * Close is called when the inode is destroyed.
2222 * If we haven't opened the file for O_WRONLY, we
2223 * need to in the size_change case to obtain a stateid.
2226 * Because OPEN is always done by name in nfsv4, it is
2227 * possible that we opened a different file by the same
2228 * name. We can recognize this race condition, but we
2229 * can't do anything about it besides returning an error.
2231 * This will be fixed with VFS changes (lookup-intent).
2234 nfs4_proc_setattr(struct dentry *dentry, struct nfs_fattr *fattr,
2235 struct iattr *sattr)
2237 struct inode *inode = dentry->d_inode;
2238 struct rpc_cred *cred = NULL;
2239 struct nfs4_state *state = NULL;
2242 nfs_fattr_init(fattr);
2244 /* Search for an existing open(O_WRITE) file */
2245 if (sattr->ia_valid & ATTR_FILE) {
2246 struct nfs_open_context *ctx;
2248 ctx = nfs_file_open_context(sattr->ia_file);
2255 status = nfs4_do_setattr(inode, cred, fattr, sattr, state);
2257 nfs_setattr_update_inode(inode, sattr);
2261 static int _nfs4_proc_lookupfh(struct nfs_server *server, const struct nfs_fh *dirfh,
2262 const struct qstr *name, struct nfs_fh *fhandle,
2263 struct nfs_fattr *fattr)
2266 struct nfs4_lookup_arg args = {
2267 .bitmask = server->attr_bitmask,
2271 struct nfs4_lookup_res res = {
2276 struct rpc_message msg = {
2277 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOOKUP],
2282 nfs_fattr_init(fattr);
2284 dprintk("NFS call lookupfh %s\n", name->name);
2285 status = nfs4_call_sync(server, &msg, &args, &res, 0);
2286 dprintk("NFS reply lookupfh: %d\n", status);
2290 static int nfs4_proc_lookupfh(struct nfs_server *server, struct nfs_fh *dirfh,
2291 struct qstr *name, struct nfs_fh *fhandle,
2292 struct nfs_fattr *fattr)
2294 struct nfs4_exception exception = { };
2297 err = _nfs4_proc_lookupfh(server, dirfh, name, fhandle, fattr);
2299 if (err == -NFS4ERR_MOVED) {
2303 err = nfs4_handle_exception(server, err, &exception);
2304 } while (exception.retry);
2308 static int _nfs4_proc_lookup(struct inode *dir, const struct qstr *name,
2309 struct nfs_fh *fhandle, struct nfs_fattr *fattr)
2313 dprintk("NFS call lookup %s\n", name->name);
2314 status = _nfs4_proc_lookupfh(NFS_SERVER(dir), NFS_FH(dir), name, fhandle, fattr);
2315 if (status == -NFS4ERR_MOVED)
2316 status = nfs4_get_referral(dir, name, fattr, fhandle);
2317 dprintk("NFS reply lookup: %d\n", status);
2321 static int nfs4_proc_lookup(struct inode *dir, struct qstr *name, struct nfs_fh *fhandle, struct nfs_fattr *fattr)
2323 struct nfs4_exception exception = { };
2326 err = nfs4_handle_exception(NFS_SERVER(dir),
2327 _nfs4_proc_lookup(dir, name, fhandle, fattr),
2329 } while (exception.retry);
2333 static int _nfs4_proc_access(struct inode *inode, struct nfs_access_entry *entry)
2335 struct nfs_server *server = NFS_SERVER(inode);
2336 struct nfs4_accessargs args = {
2337 .fh = NFS_FH(inode),
2338 .bitmask = server->attr_bitmask,
2340 struct nfs4_accessres res = {
2343 struct rpc_message msg = {
2344 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_ACCESS],
2347 .rpc_cred = entry->cred,
2349 int mode = entry->mask;
2353 * Determine which access bits we want to ask for...
2355 if (mode & MAY_READ)
2356 args.access |= NFS4_ACCESS_READ;
2357 if (S_ISDIR(inode->i_mode)) {
2358 if (mode & MAY_WRITE)
2359 args.access |= NFS4_ACCESS_MODIFY | NFS4_ACCESS_EXTEND | NFS4_ACCESS_DELETE;
2360 if (mode & MAY_EXEC)
2361 args.access |= NFS4_ACCESS_LOOKUP;
2363 if (mode & MAY_WRITE)
2364 args.access |= NFS4_ACCESS_MODIFY | NFS4_ACCESS_EXTEND;
2365 if (mode & MAY_EXEC)
2366 args.access |= NFS4_ACCESS_EXECUTE;
2369 res.fattr = nfs_alloc_fattr();
2370 if (res.fattr == NULL)
2373 status = nfs4_call_sync(server, &msg, &args, &res, 0);
2376 if (res.access & NFS4_ACCESS_READ)
2377 entry->mask |= MAY_READ;
2378 if (res.access & (NFS4_ACCESS_MODIFY | NFS4_ACCESS_EXTEND | NFS4_ACCESS_DELETE))
2379 entry->mask |= MAY_WRITE;
2380 if (res.access & (NFS4_ACCESS_LOOKUP|NFS4_ACCESS_EXECUTE))
2381 entry->mask |= MAY_EXEC;
2382 nfs_refresh_inode(inode, res.fattr);
2384 nfs_free_fattr(res.fattr);
2388 static int nfs4_proc_access(struct inode *inode, struct nfs_access_entry *entry)
2390 struct nfs4_exception exception = { };
2393 err = nfs4_handle_exception(NFS_SERVER(inode),
2394 _nfs4_proc_access(inode, entry),
2396 } while (exception.retry);
2401 * TODO: For the time being, we don't try to get any attributes
2402 * along with any of the zero-copy operations READ, READDIR,
2405 * In the case of the first three, we want to put the GETATTR
2406 * after the read-type operation -- this is because it is hard
2407 * to predict the length of a GETATTR response in v4, and thus
2408 * align the READ data correctly. This means that the GETATTR
2409 * may end up partially falling into the page cache, and we should
2410 * shift it into the 'tail' of the xdr_buf before processing.
2411 * To do this efficiently, we need to know the total length
2412 * of data received, which doesn't seem to be available outside
2415 * In the case of WRITE, we also want to put the GETATTR after
2416 * the operation -- in this case because we want to make sure
2417 * we get the post-operation mtime and size. This means that
2418 * we can't use xdr_encode_pages() as written: we need a variant
2419 * of it which would leave room in the 'tail' iovec.
2421 * Both of these changes to the XDR layer would in fact be quite
2422 * minor, but I decided to leave them for a subsequent patch.
2424 static int _nfs4_proc_readlink(struct inode *inode, struct page *page,
2425 unsigned int pgbase, unsigned int pglen)
2427 struct nfs4_readlink args = {
2428 .fh = NFS_FH(inode),
2433 struct nfs4_readlink_res res;
2434 struct rpc_message msg = {
2435 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READLINK],
2440 return nfs4_call_sync(NFS_SERVER(inode), &msg, &args, &res, 0);
2443 static int nfs4_proc_readlink(struct inode *inode, struct page *page,
2444 unsigned int pgbase, unsigned int pglen)
2446 struct nfs4_exception exception = { };
2449 err = nfs4_handle_exception(NFS_SERVER(inode),
2450 _nfs4_proc_readlink(inode, page, pgbase, pglen),
2452 } while (exception.retry);
2458 * We will need to arrange for the VFS layer to provide an atomic open.
2459 * Until then, this create/open method is prone to inefficiency and race
2460 * conditions due to the lookup, create, and open VFS calls from sys_open()
2461 * placed on the wire.
2463 * Given the above sorry state of affairs, I'm simply sending an OPEN.
2464 * The file will be opened again in the subsequent VFS open call
2465 * (nfs4_proc_file_open).
2467 * The open for read will just hang around to be used by any process that
2468 * opens the file O_RDONLY. This will all be resolved with the VFS changes.
2472 nfs4_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr,
2473 int flags, struct nfs_open_context *ctx)
2475 struct path my_path = {
2478 struct path *path = &my_path;
2479 struct nfs4_state *state;
2480 struct rpc_cred *cred = NULL;
2489 state = nfs4_do_open(dir, path, fmode, flags, sattr, cred);
2491 if (IS_ERR(state)) {
2492 status = PTR_ERR(state);
2495 d_add(dentry, igrab(state->inode));
2496 nfs_set_verifier(dentry, nfs_save_change_attribute(dir));
2500 nfs4_close_sync(path, state, fmode);
2505 static int _nfs4_proc_remove(struct inode *dir, struct qstr *name)
2507 struct nfs_server *server = NFS_SERVER(dir);
2508 struct nfs_removeargs args = {
2510 .name.len = name->len,
2511 .name.name = name->name,
2512 .bitmask = server->attr_bitmask,
2514 struct nfs_removeres res = {
2517 struct rpc_message msg = {
2518 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_REMOVE],
2522 int status = -ENOMEM;
2524 res.dir_attr = nfs_alloc_fattr();
2525 if (res.dir_attr == NULL)
2528 status = nfs4_call_sync(server, &msg, &args, &res, 1);
2530 update_changeattr(dir, &res.cinfo);
2531 nfs_post_op_update_inode(dir, res.dir_attr);
2533 nfs_free_fattr(res.dir_attr);
2538 static int nfs4_proc_remove(struct inode *dir, struct qstr *name)
2540 struct nfs4_exception exception = { };
2543 err = nfs4_handle_exception(NFS_SERVER(dir),
2544 _nfs4_proc_remove(dir, name),
2546 } while (exception.retry);
2550 static void nfs4_proc_unlink_setup(struct rpc_message *msg, struct inode *dir)
2552 struct nfs_server *server = NFS_SERVER(dir);
2553 struct nfs_removeargs *args = msg->rpc_argp;
2554 struct nfs_removeres *res = msg->rpc_resp;
2556 args->bitmask = server->cache_consistency_bitmask;
2557 res->server = server;
2558 res->seq_res.sr_slot = NULL;
2559 msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_REMOVE];
2562 static int nfs4_proc_unlink_done(struct rpc_task *task, struct inode *dir)
2564 struct nfs_removeres *res = task->tk_msg.rpc_resp;
2566 if (!nfs4_sequence_done(task, &res->seq_res))
2568 if (nfs4_async_handle_error(task, res->server, NULL) == -EAGAIN)
2570 update_changeattr(dir, &res->cinfo);
2571 nfs_post_op_update_inode(dir, res->dir_attr);
2575 static void nfs4_proc_rename_setup(struct rpc_message *msg, struct inode *dir)
2577 struct nfs_server *server = NFS_SERVER(dir);
2578 struct nfs_renameargs *arg = msg->rpc_argp;
2579 struct nfs_renameres *res = msg->rpc_resp;
2581 msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENAME];
2582 arg->bitmask = server->attr_bitmask;
2583 res->server = server;
2586 static int nfs4_proc_rename_done(struct rpc_task *task, struct inode *old_dir,
2587 struct inode *new_dir)
2589 struct nfs_renameres *res = task->tk_msg.rpc_resp;
2591 if (!nfs4_sequence_done(task, &res->seq_res))
2593 if (nfs4_async_handle_error(task, res->server, NULL) == -EAGAIN)
2596 update_changeattr(old_dir, &res->old_cinfo);
2597 nfs_post_op_update_inode(old_dir, res->old_fattr);
2598 update_changeattr(new_dir, &res->new_cinfo);
2599 nfs_post_op_update_inode(new_dir, res->new_fattr);
2603 static int _nfs4_proc_rename(struct inode *old_dir, struct qstr *old_name,
2604 struct inode *new_dir, struct qstr *new_name)
2606 struct nfs_server *server = NFS_SERVER(old_dir);
2607 struct nfs_renameargs arg = {
2608 .old_dir = NFS_FH(old_dir),
2609 .new_dir = NFS_FH(new_dir),
2610 .old_name = old_name,
2611 .new_name = new_name,
2612 .bitmask = server->attr_bitmask,
2614 struct nfs_renameres res = {
2617 struct rpc_message msg = {
2618 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENAME],
2622 int status = -ENOMEM;
2624 res.old_fattr = nfs_alloc_fattr();
2625 res.new_fattr = nfs_alloc_fattr();
2626 if (res.old_fattr == NULL || res.new_fattr == NULL)
2629 status = nfs4_call_sync(server, &msg, &arg, &res, 1);
2631 update_changeattr(old_dir, &res.old_cinfo);
2632 nfs_post_op_update_inode(old_dir, res.old_fattr);
2633 update_changeattr(new_dir, &res.new_cinfo);
2634 nfs_post_op_update_inode(new_dir, res.new_fattr);
2637 nfs_free_fattr(res.new_fattr);
2638 nfs_free_fattr(res.old_fattr);
2642 static int nfs4_proc_rename(struct inode *old_dir, struct qstr *old_name,
2643 struct inode *new_dir, struct qstr *new_name)
2645 struct nfs4_exception exception = { };
2648 err = nfs4_handle_exception(NFS_SERVER(old_dir),
2649 _nfs4_proc_rename(old_dir, old_name,
2652 } while (exception.retry);
2656 static int _nfs4_proc_link(struct inode *inode, struct inode *dir, struct qstr *name)
2658 struct nfs_server *server = NFS_SERVER(inode);
2659 struct nfs4_link_arg arg = {
2660 .fh = NFS_FH(inode),
2661 .dir_fh = NFS_FH(dir),
2663 .bitmask = server->attr_bitmask,
2665 struct nfs4_link_res res = {
2668 struct rpc_message msg = {
2669 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LINK],
2673 int status = -ENOMEM;
2675 res.fattr = nfs_alloc_fattr();
2676 res.dir_attr = nfs_alloc_fattr();
2677 if (res.fattr == NULL || res.dir_attr == NULL)
2680 status = nfs4_call_sync(server, &msg, &arg, &res, 1);
2682 update_changeattr(dir, &res.cinfo);
2683 nfs_post_op_update_inode(dir, res.dir_attr);
2684 nfs_post_op_update_inode(inode, res.fattr);
2687 nfs_free_fattr(res.dir_attr);
2688 nfs_free_fattr(res.fattr);
2692 static int nfs4_proc_link(struct inode *inode, struct inode *dir, struct qstr *name)
2694 struct nfs4_exception exception = { };
2697 err = nfs4_handle_exception(NFS_SERVER(inode),
2698 _nfs4_proc_link(inode, dir, name),
2700 } while (exception.retry);
2704 struct nfs4_createdata {
2705 struct rpc_message msg;
2706 struct nfs4_create_arg arg;
2707 struct nfs4_create_res res;
2709 struct nfs_fattr fattr;
2710 struct nfs_fattr dir_fattr;
2713 static struct nfs4_createdata *nfs4_alloc_createdata(struct inode *dir,
2714 struct qstr *name, struct iattr *sattr, u32 ftype)
2716 struct nfs4_createdata *data;
2718 data = kzalloc(sizeof(*data), GFP_KERNEL);
2720 struct nfs_server *server = NFS_SERVER(dir);
2722 data->msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CREATE];
2723 data->msg.rpc_argp = &data->arg;
2724 data->msg.rpc_resp = &data->res;
2725 data->arg.dir_fh = NFS_FH(dir);
2726 data->arg.server = server;
2727 data->arg.name = name;
2728 data->arg.attrs = sattr;
2729 data->arg.ftype = ftype;
2730 data->arg.bitmask = server->attr_bitmask;
2731 data->res.server = server;
2732 data->res.fh = &data->fh;
2733 data->res.fattr = &data->fattr;
2734 data->res.dir_fattr = &data->dir_fattr;
2735 nfs_fattr_init(data->res.fattr);
2736 nfs_fattr_init(data->res.dir_fattr);
2741 static int nfs4_do_create(struct inode *dir, struct dentry *dentry, struct nfs4_createdata *data)
2743 int status = nfs4_call_sync(NFS_SERVER(dir), &data->msg,
2744 &data->arg, &data->res, 1);
2746 update_changeattr(dir, &data->res.dir_cinfo);
2747 nfs_post_op_update_inode(dir, data->res.dir_fattr);
2748 status = nfs_instantiate(dentry, data->res.fh, data->res.fattr);
2753 static void nfs4_free_createdata(struct nfs4_createdata *data)
2758 static int _nfs4_proc_symlink(struct inode *dir, struct dentry *dentry,
2759 struct page *page, unsigned int len, struct iattr *sattr)
2761 struct nfs4_createdata *data;
2762 int status = -ENAMETOOLONG;
2764 if (len > NFS4_MAXPATHLEN)
2768 data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4LNK);
2772 data->msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SYMLINK];
2773 data->arg.u.symlink.pages = &page;
2774 data->arg.u.symlink.len = len;
2776 status = nfs4_do_create(dir, dentry, data);
2778 nfs4_free_createdata(data);
2783 static int nfs4_proc_symlink(struct inode *dir, struct dentry *dentry,
2784 struct page *page, unsigned int len, struct iattr *sattr)
2786 struct nfs4_exception exception = { };
2789 err = nfs4_handle_exception(NFS_SERVER(dir),
2790 _nfs4_proc_symlink(dir, dentry, page,
2793 } while (exception.retry);
2797 static int _nfs4_proc_mkdir(struct inode *dir, struct dentry *dentry,
2798 struct iattr *sattr)
2800 struct nfs4_createdata *data;
2801 int status = -ENOMEM;
2803 data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4DIR);
2807 status = nfs4_do_create(dir, dentry, data);
2809 nfs4_free_createdata(data);
2814 static int nfs4_proc_mkdir(struct inode *dir, struct dentry *dentry,
2815 struct iattr *sattr)
2817 struct nfs4_exception exception = { };
2820 err = nfs4_handle_exception(NFS_SERVER(dir),
2821 _nfs4_proc_mkdir(dir, dentry, sattr),
2823 } while (exception.retry);
2827 static int _nfs4_proc_readdir(struct dentry *dentry, struct rpc_cred *cred,
2828 u64 cookie, struct page **pages, unsigned int count, int plus)
2830 struct inode *dir = dentry->d_inode;
2831 struct nfs4_readdir_arg args = {
2836 .bitmask = NFS_SERVER(dentry->d_inode)->attr_bitmask,
2839 struct nfs4_readdir_res res;
2840 struct rpc_message msg = {
2841 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READDIR],
2848 dprintk("%s: dentry = %s/%s, cookie = %Lu\n", __func__,
2849 dentry->d_parent->d_name.name,
2850 dentry->d_name.name,
2851 (unsigned long long)cookie);
2852 nfs4_setup_readdir(cookie, NFS_COOKIEVERF(dir), dentry, &args);
2853 res.pgbase = args.pgbase;
2854 status = nfs4_call_sync(NFS_SERVER(dir), &msg, &args, &res, 0);
2856 memcpy(NFS_COOKIEVERF(dir), res.verifier.data, NFS4_VERIFIER_SIZE);
2858 nfs_invalidate_atime(dir);
2860 dprintk("%s: returns %d\n", __func__, status);
2864 static int nfs4_proc_readdir(struct dentry *dentry, struct rpc_cred *cred,
2865 u64 cookie, struct page **pages, unsigned int count, int plus)
2867 struct nfs4_exception exception = { };
2870 err = nfs4_handle_exception(NFS_SERVER(dentry->d_inode),
2871 _nfs4_proc_readdir(dentry, cred, cookie,
2872 pages, count, plus),
2874 } while (exception.retry);
2878 static int _nfs4_proc_mknod(struct inode *dir, struct dentry *dentry,
2879 struct iattr *sattr, dev_t rdev)
2881 struct nfs4_createdata *data;
2882 int mode = sattr->ia_mode;
2883 int status = -ENOMEM;
2885 BUG_ON(!(sattr->ia_valid & ATTR_MODE));
2886 BUG_ON(!S_ISFIFO(mode) && !S_ISBLK(mode) && !S_ISCHR(mode) && !S_ISSOCK(mode));
2888 data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4SOCK);
2893 data->arg.ftype = NF4FIFO;
2894 else if (S_ISBLK(mode)) {
2895 data->arg.ftype = NF4BLK;
2896 data->arg.u.device.specdata1 = MAJOR(rdev);
2897 data->arg.u.device.specdata2 = MINOR(rdev);
2899 else if (S_ISCHR(mode)) {
2900 data->arg.ftype = NF4CHR;
2901 data->arg.u.device.specdata1 = MAJOR(rdev);
2902 data->arg.u.device.specdata2 = MINOR(rdev);
2905 status = nfs4_do_create(dir, dentry, data);
2907 nfs4_free_createdata(data);
2912 static int nfs4_proc_mknod(struct inode *dir, struct dentry *dentry,
2913 struct iattr *sattr, dev_t rdev)
2915 struct nfs4_exception exception = { };
2918 err = nfs4_handle_exception(NFS_SERVER(dir),
2919 _nfs4_proc_mknod(dir, dentry, sattr, rdev),
2921 } while (exception.retry);
2925 static int _nfs4_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle,
2926 struct nfs_fsstat *fsstat)
2928 struct nfs4_statfs_arg args = {
2930 .bitmask = server->attr_bitmask,
2932 struct nfs4_statfs_res res = {
2935 struct rpc_message msg = {
2936 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_STATFS],
2941 nfs_fattr_init(fsstat->fattr);
2942 return nfs4_call_sync(server, &msg, &args, &res, 0);
2945 static int nfs4_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsstat *fsstat)
2947 struct nfs4_exception exception = { };
2950 err = nfs4_handle_exception(server,
2951 _nfs4_proc_statfs(server, fhandle, fsstat),
2953 } while (exception.retry);
2957 static int _nfs4_do_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle,
2958 struct nfs_fsinfo *fsinfo)
2960 struct nfs4_fsinfo_arg args = {
2962 .bitmask = server->attr_bitmask,
2964 struct nfs4_fsinfo_res res = {
2967 struct rpc_message msg = {
2968 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FSINFO],
2973 return nfs4_call_sync(server, &msg, &args, &res, 0);
2976 static int nfs4_do_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsinfo *fsinfo)
2978 struct nfs4_exception exception = { };
2982 err = nfs4_handle_exception(server,
2983 _nfs4_do_fsinfo(server, fhandle, fsinfo),
2985 } while (exception.retry);
2989 static int nfs4_proc_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsinfo *fsinfo)
2991 nfs_fattr_init(fsinfo->fattr);
2992 return nfs4_do_fsinfo(server, fhandle, fsinfo);
2995 static int _nfs4_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle,
2996 struct nfs_pathconf *pathconf)
2998 struct nfs4_pathconf_arg args = {
3000 .bitmask = server->attr_bitmask,
3002 struct nfs4_pathconf_res res = {
3003 .pathconf = pathconf,
3005 struct rpc_message msg = {
3006 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_PATHCONF],
3011 /* None of the pathconf attributes are mandatory to implement */
3012 if ((args.bitmask[0] & nfs4_pathconf_bitmap[0]) == 0) {
3013 memset(pathconf, 0, sizeof(*pathconf));
3017 nfs_fattr_init(pathconf->fattr);
3018 return nfs4_call_sync(server, &msg, &args, &res, 0);
3021 static int nfs4_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle,
3022 struct nfs_pathconf *pathconf)
3024 struct nfs4_exception exception = { };
3028 err = nfs4_handle_exception(server,
3029 _nfs4_proc_pathconf(server, fhandle, pathconf),
3031 } while (exception.retry);
3035 static int nfs4_read_done(struct rpc_task *task, struct nfs_read_data *data)
3037 struct nfs_server *server = NFS_SERVER(data->inode);
3039 dprintk("--> %s\n", __func__);
3041 if (!nfs4_sequence_done(task, &data->res.seq_res))
3044 if (nfs4_async_handle_error(task, server, data->args.context->state) == -EAGAIN) {
3045 nfs_restart_rpc(task, server->nfs_client);
3049 nfs_invalidate_atime(data->inode);
3050 if (task->tk_status > 0)
3051 renew_lease(server, data->timestamp);
3055 static void nfs4_proc_read_setup(struct nfs_read_data *data, struct rpc_message *msg)
3057 data->timestamp = jiffies;
3058 msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READ];
3061 static int nfs4_write_done(struct rpc_task *task, struct nfs_write_data *data)
3063 struct inode *inode = data->inode;
3065 if (!nfs4_sequence_done(task, &data->res.seq_res))
3068 if (nfs4_async_handle_error(task, NFS_SERVER(inode), data->args.context->state) == -EAGAIN) {
3069 nfs_restart_rpc(task, NFS_SERVER(inode)->nfs_client);
3072 if (task->tk_status >= 0) {
3073 renew_lease(NFS_SERVER(inode), data->timestamp);
3074 nfs_post_op_update_inode_force_wcc(inode, data->res.fattr);
3079 static void nfs4_proc_write_setup(struct nfs_write_data *data, struct rpc_message *msg)
3081 struct nfs_server *server = NFS_SERVER(data->inode);
3083 data->args.bitmask = server->cache_consistency_bitmask;
3084 data->res.server = server;
3085 data->timestamp = jiffies;
3087 msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_WRITE];
3090 static int nfs4_commit_done(struct rpc_task *task, struct nfs_write_data *data)
3092 struct inode *inode = data->inode;
3094 if (!nfs4_sequence_done(task, &data->res.seq_res))
3097 if (nfs4_async_handle_error(task, NFS_SERVER(inode), NULL) == -EAGAIN) {
3098 nfs_restart_rpc(task, NFS_SERVER(inode)->nfs_client);
3101 nfs_refresh_inode(inode, data->res.fattr);
3105 static void nfs4_proc_commit_setup(struct nfs_write_data *data, struct rpc_message *msg)
3107 struct nfs_server *server = NFS_SERVER(data->inode);
3109 data->args.bitmask = server->cache_consistency_bitmask;
3110 data->res.server = server;
3111 msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_COMMIT];
3114 struct nfs4_renewdata {
3115 struct nfs_client *client;
3116 unsigned long timestamp;
3120 * nfs4_proc_async_renew(): This is not one of the nfs_rpc_ops; it is a special
3121 * standalone procedure for queueing an asynchronous RENEW.
3123 static void nfs4_renew_release(void *calldata)
3125 struct nfs4_renewdata *data = calldata;
3126 struct nfs_client *clp = data->client;
3128 if (atomic_read(&clp->cl_count) > 1)
3129 nfs4_schedule_state_renewal(clp);
3130 nfs_put_client(clp);
3134 static void nfs4_renew_done(struct rpc_task *task, void *calldata)
3136 struct nfs4_renewdata *data = calldata;
3137 struct nfs_client *clp = data->client;
3138 unsigned long timestamp = data->timestamp;
3140 if (task->tk_status < 0) {
3141 /* Unless we're shutting down, schedule state recovery! */
3142 if (test_bit(NFS_CS_RENEWD, &clp->cl_res_state) != 0)
3143 nfs4_schedule_state_recovery(clp);
3146 do_renew_lease(clp, timestamp);
3149 static const struct rpc_call_ops nfs4_renew_ops = {
3150 .rpc_call_done = nfs4_renew_done,
3151 .rpc_release = nfs4_renew_release,
3154 int nfs4_proc_async_renew(struct nfs_client *clp, struct rpc_cred *cred)
3156 struct rpc_message msg = {
3157 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENEW],
3161 struct nfs4_renewdata *data;
3163 if (!atomic_inc_not_zero(&clp->cl_count))
3165 data = kmalloc(sizeof(*data), GFP_KERNEL);
3169 data->timestamp = jiffies;
3170 return rpc_call_async(clp->cl_rpcclient, &msg, RPC_TASK_SOFT,
3171 &nfs4_renew_ops, data);
3174 int nfs4_proc_renew(struct nfs_client *clp, struct rpc_cred *cred)
3176 struct rpc_message msg = {
3177 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENEW],
3181 unsigned long now = jiffies;
3184 status = rpc_call_sync(clp->cl_rpcclient, &msg, 0);
3187 do_renew_lease(clp, now);
3191 static inline int nfs4_server_supports_acls(struct nfs_server *server)
3193 return (server->caps & NFS_CAP_ACLS)
3194 && (server->acl_bitmask & ACL4_SUPPORT_ALLOW_ACL)
3195 && (server->acl_bitmask & ACL4_SUPPORT_DENY_ACL);
3198 /* Assuming that XATTR_SIZE_MAX is a multiple of PAGE_CACHE_SIZE, and that
3199 * it's OK to put sizeof(void) * (XATTR_SIZE_MAX/PAGE_CACHE_SIZE) bytes on
3202 #define NFS4ACL_MAXPAGES (XATTR_SIZE_MAX >> PAGE_CACHE_SHIFT)
3204 static void buf_to_pages(const void *buf, size_t buflen,
3205 struct page **pages, unsigned int *pgbase)
3207 const void *p = buf;
3209 *pgbase = offset_in_page(buf);
3211 while (p < buf + buflen) {
3212 *(pages++) = virt_to_page(p);
3213 p += PAGE_CACHE_SIZE;
3217 struct nfs4_cached_acl {
3223 static void nfs4_set_cached_acl(struct inode *inode, struct nfs4_cached_acl *acl)
3225 struct nfs_inode *nfsi = NFS_I(inode);
3227 spin_lock(&inode->i_lock);
3228 kfree(nfsi->nfs4_acl);
3229 nfsi->nfs4_acl = acl;
3230 spin_unlock(&inode->i_lock);
3233 static void nfs4_zap_acl_attr(struct inode *inode)
3235 nfs4_set_cached_acl(inode, NULL);
3238 static inline ssize_t nfs4_read_cached_acl(struct inode *inode, char *buf, size_t buflen)
3240 struct nfs_inode *nfsi = NFS_I(inode);
3241 struct nfs4_cached_acl *acl;
3244 spin_lock(&inode->i_lock);
3245 acl = nfsi->nfs4_acl;
3248 if (buf == NULL) /* user is just asking for length */
3250 if (acl->cached == 0)
3252 ret = -ERANGE; /* see getxattr(2) man page */
3253 if (acl->len > buflen)
3255 memcpy(buf, acl->data, acl->len);
3259 spin_unlock(&inode->i_lock);
3263 static void nfs4_write_cached_acl(struct inode *inode, const char *buf, size_t acl_len)
3265 struct nfs4_cached_acl *acl;
3267 if (buf && acl_len <= PAGE_SIZE) {
3268 acl = kmalloc(sizeof(*acl) + acl_len, GFP_KERNEL);
3272 memcpy(acl->data, buf, acl_len);
3274 acl = kmalloc(sizeof(*acl), GFP_KERNEL);
3281 nfs4_set_cached_acl(inode, acl);
3284 static ssize_t __nfs4_get_acl_uncached(struct inode *inode, void *buf, size_t buflen)
3286 struct page *pages[NFS4ACL_MAXPAGES];
3287 struct nfs_getaclargs args = {
3288 .fh = NFS_FH(inode),
3292 struct nfs_getaclres res = {
3296 struct rpc_message msg = {
3297 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETACL],
3301 struct page *localpage = NULL;
3304 if (buflen < PAGE_SIZE) {
3305 /* As long as we're doing a round trip to the server anyway,
3306 * let's be prepared for a page of acl data. */
3307 localpage = alloc_page(GFP_KERNEL);
3308 resp_buf = page_address(localpage);
3309 if (localpage == NULL)
3311 args.acl_pages[0] = localpage;
3312 args.acl_pgbase = 0;
3313 args.acl_len = PAGE_SIZE;
3316 buf_to_pages(buf, buflen, args.acl_pages, &args.acl_pgbase);
3318 ret = nfs4_call_sync(NFS_SERVER(inode), &msg, &args, &res, 0);
3321 if (res.acl_len > args.acl_len)
3322 nfs4_write_cached_acl(inode, NULL, res.acl_len);
3324 nfs4_write_cached_acl(inode, resp_buf, res.acl_len);
3327 if (res.acl_len > buflen)
3330 memcpy(buf, resp_buf, res.acl_len);
3335 __free_page(localpage);
3339 static ssize_t nfs4_get_acl_uncached(struct inode *inode, void *buf, size_t buflen)
3341 struct nfs4_exception exception = { };
3344 ret = __nfs4_get_acl_uncached(inode, buf, buflen);
3347 ret = nfs4_handle_exception(NFS_SERVER(inode), ret, &exception);
3348 } while (exception.retry);
3352 static ssize_t nfs4_proc_get_acl(struct inode *inode, void *buf, size_t buflen)
3354 struct nfs_server *server = NFS_SERVER(inode);
3357 if (!nfs4_server_supports_acls(server))
3359 ret = nfs_revalidate_inode(server, inode);
3362 ret = nfs4_read_cached_acl(inode, buf, buflen);
3365 return nfs4_get_acl_uncached(inode, buf, buflen);
3368 static int __nfs4_proc_set_acl(struct inode *inode, const void *buf, size_t buflen)
3370 struct nfs_server *server = NFS_SERVER(inode);
3371 struct page *pages[NFS4ACL_MAXPAGES];
3372 struct nfs_setaclargs arg = {
3373 .fh = NFS_FH(inode),
3377 struct nfs_setaclres res;
3378 struct rpc_message msg = {
3379 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETACL],
3385 if (!nfs4_server_supports_acls(server))
3387 nfs_inode_return_delegation(inode);
3388 buf_to_pages(buf, buflen, arg.acl_pages, &arg.acl_pgbase);
3389 ret = nfs4_call_sync(server, &msg, &arg, &res, 1);
3390 nfs_access_zap_cache(inode);
3391 nfs_zap_acl_cache(inode);
3395 static int nfs4_proc_set_acl(struct inode *inode, const void *buf, size_t buflen)
3397 struct nfs4_exception exception = { };
3400 err = nfs4_handle_exception(NFS_SERVER(inode),
3401 __nfs4_proc_set_acl(inode, buf, buflen),
3403 } while (exception.retry);
3408 nfs4_async_handle_error(struct rpc_task *task, const struct nfs_server *server, struct nfs4_state *state)
3410 struct nfs_client *clp = server->nfs_client;
3412 if (task->tk_status >= 0)
3414 switch(task->tk_status) {
3415 case -NFS4ERR_ADMIN_REVOKED:
3416 case -NFS4ERR_BAD_STATEID:
3417 case -NFS4ERR_OPENMODE:
3420 nfs4_state_mark_reclaim_nograce(clp, state);
3421 goto do_state_recovery;
3422 case -NFS4ERR_STALE_STATEID:
3423 case -NFS4ERR_STALE_CLIENTID:
3424 case -NFS4ERR_EXPIRED:
3425 goto do_state_recovery;
3426 #if defined(CONFIG_NFS_V4_1)
3427 case -NFS4ERR_BADSESSION:
3428 case -NFS4ERR_BADSLOT:
3429 case -NFS4ERR_BAD_HIGH_SLOT:
3430 case -NFS4ERR_DEADSESSION:
3431 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION:
3432 case -NFS4ERR_SEQ_FALSE_RETRY:
3433 case -NFS4ERR_SEQ_MISORDERED:
3434 dprintk("%s ERROR %d, Reset session\n", __func__,
3436 nfs4_schedule_state_recovery(clp);
3437 task->tk_status = 0;
3439 #endif /* CONFIG_NFS_V4_1 */
3440 case -NFS4ERR_DELAY:
3441 nfs_inc_server_stats(server, NFSIOS_DELAY);
3442 case -NFS4ERR_GRACE:
3444 rpc_delay(task, NFS4_POLL_RETRY_MAX);
3445 task->tk_status = 0;
3447 case -NFS4ERR_OLD_STATEID:
3448 task->tk_status = 0;
3451 task->tk_status = nfs4_map_errors(task->tk_status);
3454 rpc_sleep_on(&clp->cl_rpcwaitq, task, NULL);
3455 nfs4_schedule_state_recovery(clp);
3456 if (test_bit(NFS4CLNT_MANAGER_RUNNING, &clp->cl_state) == 0)
3457 rpc_wake_up_queued_task(&clp->cl_rpcwaitq, task);
3458 task->tk_status = 0;
3462 int nfs4_proc_setclientid(struct nfs_client *clp, u32 program,
3463 unsigned short port, struct rpc_cred *cred,
3464 struct nfs4_setclientid_res *res)
3466 nfs4_verifier sc_verifier;
3467 struct nfs4_setclientid setclientid = {
3468 .sc_verifier = &sc_verifier,
3471 struct rpc_message msg = {
3472 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETCLIENTID],
3473 .rpc_argp = &setclientid,
3481 p = (__be32*)sc_verifier.data;
3482 *p++ = htonl((u32)clp->cl_boot_time.tv_sec);
3483 *p = htonl((u32)clp->cl_boot_time.tv_nsec);
3486 setclientid.sc_name_len = scnprintf(setclientid.sc_name,
3487 sizeof(setclientid.sc_name), "%s/%s %s %s %u",
3489 rpc_peeraddr2str(clp->cl_rpcclient,
3491 rpc_peeraddr2str(clp->cl_rpcclient,
3493 clp->cl_rpcclient->cl_auth->au_ops->au_name,
3494 clp->cl_id_uniquifier);
3495 setclientid.sc_netid_len = scnprintf(setclientid.sc_netid,
3496 sizeof(setclientid.sc_netid),
3497 rpc_peeraddr2str(clp->cl_rpcclient,
3498 RPC_DISPLAY_NETID));
3499 setclientid.sc_uaddr_len = scnprintf(setclientid.sc_uaddr,
3500 sizeof(setclientid.sc_uaddr), "%s.%u.%u",
3501 clp->cl_ipaddr, port >> 8, port & 255);
3503 status = rpc_call_sync(clp->cl_rpcclient, &msg, 0);
3504 if (status != -NFS4ERR_CLID_INUSE)
3509 ssleep(clp->cl_lease_time + 1);
3511 if (++clp->cl_id_uniquifier == 0)
3517 static int _nfs4_proc_setclientid_confirm(struct nfs_client *clp,
3518 struct nfs4_setclientid_res *arg,
3519 struct rpc_cred *cred)
3521 struct nfs_fsinfo fsinfo;
3522 struct rpc_message msg = {
3523 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETCLIENTID_CONFIRM],
3525 .rpc_resp = &fsinfo,
3532 status = rpc_call_sync(clp->cl_rpcclient, &msg, 0);
3534 spin_lock(&clp->cl_lock);
3535 clp->cl_lease_time = fsinfo.lease_time * HZ;
3536 clp->cl_last_renewal = now;
3537 spin_unlock(&clp->cl_lock);
3542 int nfs4_proc_setclientid_confirm(struct nfs_client *clp,
3543 struct nfs4_setclientid_res *arg,
3544 struct rpc_cred *cred)
3549 err = _nfs4_proc_setclientid_confirm(clp, arg, cred);
3553 case -NFS4ERR_RESOURCE:
3554 /* The IBM lawyers misread another document! */
3555 case -NFS4ERR_DELAY:
3556 err = nfs4_delay(clp->cl_rpcclient, &timeout);
3562 struct nfs4_delegreturndata {
3563 struct nfs4_delegreturnargs args;
3564 struct nfs4_delegreturnres res;
3566 nfs4_stateid stateid;
3567 unsigned long timestamp;
3568 struct nfs_fattr fattr;
3572 static void nfs4_delegreturn_done(struct rpc_task *task, void *calldata)
3574 struct nfs4_delegreturndata *data = calldata;
3576 if (!nfs4_sequence_done(task, &data->res.seq_res))
3579 switch (task->tk_status) {
3580 case -NFS4ERR_STALE_STATEID:
3581 case -NFS4ERR_EXPIRED:
3583 renew_lease(data->res.server, data->timestamp);
3586 if (nfs4_async_handle_error(task, data->res.server, NULL) ==
3588 nfs_restart_rpc(task, data->res.server->nfs_client);
3592 data->rpc_status = task->tk_status;
3595 static void nfs4_delegreturn_release(void *calldata)
3600 #if defined(CONFIG_NFS_V4_1)
3601 static void nfs4_delegreturn_prepare(struct rpc_task *task, void *data)
3603 struct nfs4_delegreturndata *d_data;
3605 d_data = (struct nfs4_delegreturndata *)data;
3607 if (nfs4_setup_sequence(d_data->res.server,
3608 &d_data->args.seq_args,
3609 &d_data->res.seq_res, 1, task))
3611 rpc_call_start(task);
3613 #endif /* CONFIG_NFS_V4_1 */
3615 static const struct rpc_call_ops nfs4_delegreturn_ops = {
3616 #if defined(CONFIG_NFS_V4_1)
3617 .rpc_call_prepare = nfs4_delegreturn_prepare,
3618 #endif /* CONFIG_NFS_V4_1 */
3619 .rpc_call_done = nfs4_delegreturn_done,
3620 .rpc_release = nfs4_delegreturn_release,
3623 static int _nfs4_proc_delegreturn(struct inode *inode, struct rpc_cred *cred, const nfs4_stateid *stateid, int issync)
3625 struct nfs4_delegreturndata *data;
3626 struct nfs_server *server = NFS_SERVER(inode);
3627 struct rpc_task *task;
3628 struct rpc_message msg = {
3629 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DELEGRETURN],
3632 struct rpc_task_setup task_setup_data = {
3633 .rpc_client = server->client,
3634 .rpc_message = &msg,
3635 .callback_ops = &nfs4_delegreturn_ops,
3636 .flags = RPC_TASK_ASYNC,
3640 data = kzalloc(sizeof(*data), GFP_NOFS);
3643 data->args.fhandle = &data->fh;
3644 data->args.stateid = &data->stateid;
3645 data->args.bitmask = server->attr_bitmask;
3646 nfs_copy_fh(&data->fh, NFS_FH(inode));
3647 memcpy(&data->stateid, stateid, sizeof(data->stateid));
3648 data->res.fattr = &data->fattr;
3649 data->res.server = server;
3650 nfs_fattr_init(data->res.fattr);
3651 data->timestamp = jiffies;
3652 data->rpc_status = 0;
3654 task_setup_data.callback_data = data;
3655 msg.rpc_argp = &data->args,
3656 msg.rpc_resp = &data->res,
3657 task = rpc_run_task(&task_setup_data);
3659 return PTR_ERR(task);
3662 status = nfs4_wait_for_completion_rpc_task(task);
3665 status = data->rpc_status;
3668 nfs_refresh_inode(inode, &data->fattr);
3674 int nfs4_proc_delegreturn(struct inode *inode, struct rpc_cred *cred, const nfs4_stateid *stateid, int issync)
3676 struct nfs_server *server = NFS_SERVER(inode);
3677 struct nfs4_exception exception = { };
3680 err = _nfs4_proc_delegreturn(inode, cred, stateid, issync);
3682 case -NFS4ERR_STALE_STATEID:
3683 case -NFS4ERR_EXPIRED:
3687 err = nfs4_handle_exception(server, err, &exception);
3688 } while (exception.retry);
3692 #define NFS4_LOCK_MINTIMEOUT (1 * HZ)
3693 #define NFS4_LOCK_MAXTIMEOUT (30 * HZ)
3696 * sleep, with exponential backoff, and retry the LOCK operation.
3698 static unsigned long
3699 nfs4_set_lock_task_retry(unsigned long timeout)
3701 schedule_timeout_killable(timeout);
3703 if (timeout > NFS4_LOCK_MAXTIMEOUT)
3704 return NFS4_LOCK_MAXTIMEOUT;
3708 static int _nfs4_proc_getlk(struct nfs4_state *state, int cmd, struct file_lock *request)
3710 struct inode *inode = state->inode;
3711 struct nfs_server *server = NFS_SERVER(inode);
3712 struct nfs_client *clp = server->nfs_client;
3713 struct nfs_lockt_args arg = {
3714 .fh = NFS_FH(inode),
3717 struct nfs_lockt_res res = {
3720 struct rpc_message msg = {
3721 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCKT],
3724 .rpc_cred = state->owner->so_cred,
3726 struct nfs4_lock_state *lsp;
3729 arg.lock_owner.clientid = clp->cl_clientid;
3730 status = nfs4_set_lock_state(state, request);
3733 lsp = request->fl_u.nfs4_fl.owner;
3734 arg.lock_owner.id = lsp->ls_id.id;
3735 status = nfs4_call_sync(server, &msg, &arg, &res, 1);
3738 request->fl_type = F_UNLCK;
3740 case -NFS4ERR_DENIED:
3743 request->fl_ops->fl_release_private(request);
3748 static int nfs4_proc_getlk(struct nfs4_state *state, int cmd, struct file_lock *request)
3750 struct nfs4_exception exception = { };
3754 err = nfs4_handle_exception(NFS_SERVER(state->inode),
3755 _nfs4_proc_getlk(state, cmd, request),
3757 } while (exception.retry);
3761 static int do_vfs_lock(struct file *file, struct file_lock *fl)
3764 switch (fl->fl_flags & (FL_POSIX|FL_FLOCK)) {
3766 res = posix_lock_file_wait(file, fl);
3769 res = flock_lock_file_wait(file, fl);
3777 struct nfs4_unlockdata {
3778 struct nfs_locku_args arg;
3779 struct nfs_locku_res res;
3780 struct nfs4_lock_state *lsp;
3781 struct nfs_open_context *ctx;
3782 struct file_lock fl;
3783 const struct nfs_server *server;
3784 unsigned long timestamp;
3787 static struct nfs4_unlockdata *nfs4_alloc_unlockdata(struct file_lock *fl,
3788 struct nfs_open_context *ctx,
3789 struct nfs4_lock_state *lsp,
3790 struct nfs_seqid *seqid)
3792 struct nfs4_unlockdata *p;
3793 struct inode *inode = lsp->ls_state->inode;
3795 p = kzalloc(sizeof(*p), GFP_NOFS);
3798 p->arg.fh = NFS_FH(inode);
3800 p->arg.seqid = seqid;
3801 p->res.seqid = seqid;
3802 p->arg.stateid = &lsp->ls_stateid;
3804 atomic_inc(&lsp->ls_count);
3805 /* Ensure we don't close file until we're done freeing locks! */
3806 p->ctx = get_nfs_open_context(ctx);
3807 memcpy(&p->fl, fl, sizeof(p->fl));
3808 p->server = NFS_SERVER(inode);
3812 static void nfs4_locku_release_calldata(void *data)
3814 struct nfs4_unlockdata *calldata = data;
3815 nfs_free_seqid(calldata->arg.seqid);
3816 nfs4_put_lock_state(calldata->lsp);
3817 put_nfs_open_context(calldata->ctx);
3821 static void nfs4_locku_done(struct rpc_task *task, void *data)
3823 struct nfs4_unlockdata *calldata = data;
3825 if (!nfs4_sequence_done(task, &calldata->res.seq_res))
3827 switch (task->tk_status) {
3829 memcpy(calldata->lsp->ls_stateid.data,
3830 calldata->res.stateid.data,
3831 sizeof(calldata->lsp->ls_stateid.data));
3832 renew_lease(calldata->server, calldata->timestamp);
3834 case -NFS4ERR_BAD_STATEID:
3835 case -NFS4ERR_OLD_STATEID:
3836 case -NFS4ERR_STALE_STATEID:
3837 case -NFS4ERR_EXPIRED:
3840 if (nfs4_async_handle_error(task, calldata->server, NULL) == -EAGAIN)
3841 nfs_restart_rpc(task,
3842 calldata->server->nfs_client);
3846 static void nfs4_locku_prepare(struct rpc_task *task, void *data)
3848 struct nfs4_unlockdata *calldata = data;
3850 if (nfs_wait_on_sequence(calldata->arg.seqid, task) != 0)
3852 if ((calldata->lsp->ls_flags & NFS_LOCK_INITIALIZED) == 0) {
3853 /* Note: exit _without_ running nfs4_locku_done */
3854 task->tk_action = NULL;
3857 calldata->timestamp = jiffies;
3858 if (nfs4_setup_sequence(calldata->server,
3859 &calldata->arg.seq_args,
3860 &calldata->res.seq_res, 1, task))
3862 rpc_call_start(task);
3865 static const struct rpc_call_ops nfs4_locku_ops = {
3866 .rpc_call_prepare = nfs4_locku_prepare,
3867 .rpc_call_done = nfs4_locku_done,
3868 .rpc_release = nfs4_locku_release_calldata,
3871 static struct rpc_task *nfs4_do_unlck(struct file_lock *fl,
3872 struct nfs_open_context *ctx,
3873 struct nfs4_lock_state *lsp,
3874 struct nfs_seqid *seqid)
3876 struct nfs4_unlockdata *data;
3877 struct rpc_message msg = {
3878 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCKU],
3879 .rpc_cred = ctx->cred,
3881 struct rpc_task_setup task_setup_data = {
3882 .rpc_client = NFS_CLIENT(lsp->ls_state->inode),
3883 .rpc_message = &msg,
3884 .callback_ops = &nfs4_locku_ops,
3885 .workqueue = nfsiod_workqueue,
3886 .flags = RPC_TASK_ASYNC,
3889 /* Ensure this is an unlock - when canceling a lock, the
3890 * canceled lock is passed in, and it won't be an unlock.
3892 fl->fl_type = F_UNLCK;
3894 data = nfs4_alloc_unlockdata(fl, ctx, lsp, seqid);
3896 nfs_free_seqid(seqid);
3897 return ERR_PTR(-ENOMEM);
3900 msg.rpc_argp = &data->arg,
3901 msg.rpc_resp = &data->res,
3902 task_setup_data.callback_data = data;
3903 return rpc_run_task(&task_setup_data);
3906 static int nfs4_proc_unlck(struct nfs4_state *state, int cmd, struct file_lock *request)
3908 struct nfs_inode *nfsi = NFS_I(state->inode);
3909 struct nfs_seqid *seqid;
3910 struct nfs4_lock_state *lsp;
3911 struct rpc_task *task;
3913 unsigned char fl_flags = request->fl_flags;
3915 status = nfs4_set_lock_state(state, request);
3916 /* Unlock _before_ we do the RPC call */
3917 request->fl_flags |= FL_EXISTS;
3918 down_read(&nfsi->rwsem);
3919 if (do_vfs_lock(request->fl_file, request) == -ENOENT) {
3920 up_read(&nfsi->rwsem);
3923 up_read(&nfsi->rwsem);
3926 /* Is this a delegated lock? */
3927 if (test_bit(NFS_DELEGATED_STATE, &state->flags))
3929 lsp = request->fl_u.nfs4_fl.owner;
3930 seqid = nfs_alloc_seqid(&lsp->ls_seqid, GFP_KERNEL);
3934 task = nfs4_do_unlck(request, nfs_file_open_context(request->fl_file), lsp, seqid);
3935 status = PTR_ERR(task);
3938 status = nfs4_wait_for_completion_rpc_task(task);
3941 request->fl_flags = fl_flags;
3945 struct nfs4_lockdata {
3946 struct nfs_lock_args arg;
3947 struct nfs_lock_res res;
3948 struct nfs4_lock_state *lsp;
3949 struct nfs_open_context *ctx;
3950 struct file_lock fl;
3951 unsigned long timestamp;
3954 struct nfs_server *server;
3957 static struct nfs4_lockdata *nfs4_alloc_lockdata(struct file_lock *fl,
3958 struct nfs_open_context *ctx, struct nfs4_lock_state *lsp,
3961 struct nfs4_lockdata *p;
3962 struct inode *inode = lsp->ls_state->inode;
3963 struct nfs_server *server = NFS_SERVER(inode);
3965 p = kzalloc(sizeof(*p), gfp_mask);
3969 p->arg.fh = NFS_FH(inode);
3971 p->arg.open_seqid = nfs_alloc_seqid(&lsp->ls_state->owner->so_seqid, gfp_mask);
3972 if (p->arg.open_seqid == NULL)
3974 p->arg.lock_seqid = nfs_alloc_seqid(&lsp->ls_seqid, gfp_mask);
3975 if (p->arg.lock_seqid == NULL)
3976 goto out_free_seqid;
3977 p->arg.lock_stateid = &lsp->ls_stateid;
3978 p->arg.lock_owner.clientid = server->nfs_client->cl_clientid;
3979 p->arg.lock_owner.id = lsp->ls_id.id;
3980 p->res.lock_seqid = p->arg.lock_seqid;
3983 atomic_inc(&lsp->ls_count);
3984 p->ctx = get_nfs_open_context(ctx);
3985 memcpy(&p->fl, fl, sizeof(p->fl));
3988 nfs_free_seqid(p->arg.open_seqid);
3994 static void nfs4_lock_prepare(struct rpc_task *task, void *calldata)
3996 struct nfs4_lockdata *data = calldata;
3997 struct nfs4_state *state = data->lsp->ls_state;
3999 dprintk("%s: begin!\n", __func__);
4000 if (nfs_wait_on_sequence(data->arg.lock_seqid, task) != 0)
4002 /* Do we need to do an open_to_lock_owner? */
4003 if (!(data->arg.lock_seqid->sequence->flags & NFS_SEQID_CONFIRMED)) {
4004 if (nfs_wait_on_sequence(data->arg.open_seqid, task) != 0)
4006 data->arg.open_stateid = &state->stateid;
4007 data->arg.new_lock_owner = 1;
4008 data->res.open_seqid = data->arg.open_seqid;
4010 data->arg.new_lock_owner = 0;
4011 data->timestamp = jiffies;
4012 if (nfs4_setup_sequence(data->server,
4013 &data->arg.seq_args,
4014 &data->res.seq_res, 1, task))
4016 rpc_call_start(task);
4017 dprintk("%s: done!, ret = %d\n", __func__, data->rpc_status);
4020 static void nfs4_recover_lock_prepare(struct rpc_task *task, void *calldata)
4022 rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED);
4023 nfs4_lock_prepare(task, calldata);
4026 static void nfs4_lock_done(struct rpc_task *task, void *calldata)
4028 struct nfs4_lockdata *data = calldata;
4030 dprintk("%s: begin!\n", __func__);
4032 if (!nfs4_sequence_done(task, &data->res.seq_res))
4035 data->rpc_status = task->tk_status;
4036 if (data->arg.new_lock_owner != 0) {
4037 if (data->rpc_status == 0)
4038 nfs_confirm_seqid(&data->lsp->ls_seqid, 0);
4042 if (data->rpc_status == 0) {
4043 memcpy(data->lsp->ls_stateid.data, data->res.stateid.data,
4044 sizeof(data->lsp->ls_stateid.data));
4045 data->lsp->ls_flags |= NFS_LOCK_INITIALIZED;
4046 renew_lease(NFS_SERVER(data->ctx->path.dentry->d_inode), data->timestamp);
4049 dprintk("%s: done, ret = %d!\n", __func__, data->rpc_status);
4052 static void nfs4_lock_release(void *calldata)
4054 struct nfs4_lockdata *data = calldata;
4056 dprintk("%s: begin!\n", __func__);
4057 nfs_free_seqid(data->arg.open_seqid);
4058 if (data->cancelled != 0) {
4059 struct rpc_task *task;
4060 task = nfs4_do_unlck(&data->fl, data->ctx, data->lsp,
4061 data->arg.lock_seqid);
4064 dprintk("%s: cancelling lock!\n", __func__);
4066 nfs_free_seqid(data->arg.lock_seqid);
4067 nfs4_put_lock_state(data->lsp);
4068 put_nfs_open_context(data->ctx);
4070 dprintk("%s: done!\n", __func__);
4073 static const struct rpc_call_ops nfs4_lock_ops = {
4074 .rpc_call_prepare = nfs4_lock_prepare,
4075 .rpc_call_done = nfs4_lock_done,
4076 .rpc_release = nfs4_lock_release,
4079 static const struct rpc_call_ops nfs4_recover_lock_ops = {
4080 .rpc_call_prepare = nfs4_recover_lock_prepare,
4081 .rpc_call_done = nfs4_lock_done,
4082 .rpc_release = nfs4_lock_release,
4085 static void nfs4_handle_setlk_error(struct nfs_server *server, struct nfs4_lock_state *lsp, int new_lock_owner, int error)
4087 struct nfs_client *clp = server->nfs_client;
4088 struct nfs4_state *state = lsp->ls_state;
4091 case -NFS4ERR_ADMIN_REVOKED:
4092 case -NFS4ERR_BAD_STATEID:
4093 case -NFS4ERR_EXPIRED:
4094 if (new_lock_owner != 0 ||
4095 (lsp->ls_flags & NFS_LOCK_INITIALIZED) != 0)
4096 nfs4_state_mark_reclaim_nograce(clp, state);
4097 lsp->ls_seqid.flags &= ~NFS_SEQID_CONFIRMED;
4099 case -NFS4ERR_STALE_STATEID:
4100 if (new_lock_owner != 0 ||
4101 (lsp->ls_flags & NFS_LOCK_INITIALIZED) != 0)
4102 nfs4_state_mark_reclaim_reboot(clp, state);
4103 lsp->ls_seqid.flags &= ~NFS_SEQID_CONFIRMED;
4107 static int _nfs4_do_setlk(struct nfs4_state *state, int cmd, struct file_lock *fl, int recovery_type)
4109 struct nfs4_lockdata *data;
4110 struct rpc_task *task;
4111 struct rpc_message msg = {
4112 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCK],
4113 .rpc_cred = state->owner->so_cred,
4115 struct rpc_task_setup task_setup_data = {
4116 .rpc_client = NFS_CLIENT(state->inode),
4117 .rpc_message = &msg,
4118 .callback_ops = &nfs4_lock_ops,
4119 .workqueue = nfsiod_workqueue,
4120 .flags = RPC_TASK_ASYNC,
4124 dprintk("%s: begin!\n", __func__);
4125 data = nfs4_alloc_lockdata(fl, nfs_file_open_context(fl->fl_file),
4126 fl->fl_u.nfs4_fl.owner,
4127 recovery_type == NFS_LOCK_NEW ? GFP_KERNEL : GFP_NOFS);
4131 data->arg.block = 1;
4132 if (recovery_type > NFS_LOCK_NEW) {
4133 if (recovery_type == NFS_LOCK_RECLAIM)
4134 data->arg.reclaim = NFS_LOCK_RECLAIM;
4135 task_setup_data.callback_ops = &nfs4_recover_lock_ops;
4137 msg.rpc_argp = &data->arg,
4138 msg.rpc_resp = &data->res,
4139 task_setup_data.callback_data = data;
4140 task = rpc_run_task(&task_setup_data);
4142 return PTR_ERR(task);
4143 ret = nfs4_wait_for_completion_rpc_task(task);
4145 ret = data->rpc_status;
4147 nfs4_handle_setlk_error(data->server, data->lsp,
4148 data->arg.new_lock_owner, ret);
4150 data->cancelled = 1;
4152 dprintk("%s: done, ret = %d!\n", __func__, ret);
4156 static int nfs4_lock_reclaim(struct nfs4_state *state, struct file_lock *request)
4158 struct nfs_server *server = NFS_SERVER(state->inode);
4159 struct nfs4_exception exception = { };
4163 /* Cache the lock if possible... */
4164 if (test_bit(NFS_DELEGATED_STATE, &state->flags) != 0)
4166 err = _nfs4_do_setlk(state, F_SETLK, request, NFS_LOCK_RECLAIM);
4167 if (err != -NFS4ERR_DELAY)
4169 nfs4_handle_exception(server, err, &exception);
4170 } while (exception.retry);
4174 static int nfs4_lock_expired(struct nfs4_state *state, struct file_lock *request)
4176 struct nfs_server *server = NFS_SERVER(state->inode);
4177 struct nfs4_exception exception = { };
4180 err = nfs4_set_lock_state(state, request);
4184 if (test_bit(NFS_DELEGATED_STATE, &state->flags) != 0)
4186 err = _nfs4_do_setlk(state, F_SETLK, request, NFS_LOCK_EXPIRED);
4190 case -NFS4ERR_GRACE:
4191 case -NFS4ERR_DELAY:
4192 nfs4_handle_exception(server, err, &exception);
4195 } while (exception.retry);
4200 static int _nfs4_proc_setlk(struct nfs4_state *state, int cmd, struct file_lock *request)
4202 struct nfs_inode *nfsi = NFS_I(state->inode);
4203 unsigned char fl_flags = request->fl_flags;
4204 int status = -ENOLCK;
4206 if ((fl_flags & FL_POSIX) &&
4207 !test_bit(NFS_STATE_POSIX_LOCKS, &state->flags))
4209 /* Is this a delegated open? */
4210 status = nfs4_set_lock_state(state, request);
4213 request->fl_flags |= FL_ACCESS;
4214 status = do_vfs_lock(request->fl_file, request);
4217 down_read(&nfsi->rwsem);
4218 if (test_bit(NFS_DELEGATED_STATE, &state->flags)) {
4219 /* Yes: cache locks! */
4220 /* ...but avoid races with delegation recall... */
4221 request->fl_flags = fl_flags & ~FL_SLEEP;
4222 status = do_vfs_lock(request->fl_file, request);
4225 status = _nfs4_do_setlk(state, cmd, request, NFS_LOCK_NEW);
4228 /* Note: we always want to sleep here! */
4229 request->fl_flags = fl_flags | FL_SLEEP;
4230 if (do_vfs_lock(request->fl_file, request) < 0)
4231 printk(KERN_WARNING "%s: VFS is out of sync with lock manager!\n", __func__);
4233 up_read(&nfsi->rwsem);
4235 request->fl_flags = fl_flags;
4239 static int nfs4_proc_setlk(struct nfs4_state *state, int cmd, struct file_lock *request)
4241 struct nfs4_exception exception = { };
4245 err = _nfs4_proc_setlk(state, cmd, request);
4246 if (err == -NFS4ERR_DENIED)
4248 err = nfs4_handle_exception(NFS_SERVER(state->inode),
4250 } while (exception.retry);
4255 nfs4_proc_lock(struct file *filp, int cmd, struct file_lock *request)
4257 struct nfs_open_context *ctx;
4258 struct nfs4_state *state;
4259 unsigned long timeout = NFS4_LOCK_MINTIMEOUT;
4262 /* verify open state */
4263 ctx = nfs_file_open_context(filp);
4266 if (request->fl_start < 0 || request->fl_end < 0)
4269 if (IS_GETLK(cmd)) {
4271 return nfs4_proc_getlk(state, F_GETLK, request);
4275 if (!(IS_SETLK(cmd) || IS_SETLKW(cmd)))
4278 if (request->fl_type == F_UNLCK) {
4280 return nfs4_proc_unlck(state, cmd, request);
4287 status = nfs4_proc_setlk(state, cmd, request);
4288 if ((status != -EAGAIN) || IS_SETLK(cmd))
4290 timeout = nfs4_set_lock_task_retry(timeout);
4291 status = -ERESTARTSYS;
4294 } while(status < 0);
4298 int nfs4_lock_delegation_recall(struct nfs4_state *state, struct file_lock *fl)
4300 struct nfs_server *server = NFS_SERVER(state->inode);
4301 struct nfs4_exception exception = { };
4304 err = nfs4_set_lock_state(state, fl);
4308 err = _nfs4_do_setlk(state, F_SETLK, fl, NFS_LOCK_NEW);
4311 printk(KERN_ERR "%s: unhandled error %d.\n",
4316 case -NFS4ERR_EXPIRED:
4317 case -NFS4ERR_STALE_CLIENTID:
4318 case -NFS4ERR_STALE_STATEID:
4319 case -NFS4ERR_BADSESSION:
4320 case -NFS4ERR_BADSLOT:
4321 case -NFS4ERR_BAD_HIGH_SLOT:
4322 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION:
4323 case -NFS4ERR_DEADSESSION:
4324 nfs4_schedule_state_recovery(server->nfs_client);
4328 * The show must go on: exit, but mark the
4329 * stateid as needing recovery.
4331 case -NFS4ERR_ADMIN_REVOKED:
4332 case -NFS4ERR_BAD_STATEID:
4333 case -NFS4ERR_OPENMODE:
4334 nfs4_state_mark_reclaim_nograce(server->nfs_client, state);
4339 * User RPCSEC_GSS context has expired.
4340 * We cannot recover this stateid now, so
4341 * skip it and allow recovery thread to
4347 case -NFS4ERR_DENIED:
4348 /* kill_proc(fl->fl_pid, SIGLOST, 1); */
4351 case -NFS4ERR_DELAY:
4354 err = nfs4_handle_exception(server, err, &exception);
4355 } while (exception.retry);
4360 static void nfs4_release_lockowner_release(void *calldata)
4365 const struct rpc_call_ops nfs4_release_lockowner_ops = {
4366 .rpc_release = nfs4_release_lockowner_release,
4369 void nfs4_release_lockowner(const struct nfs4_lock_state *lsp)
4371 struct nfs_server *server = lsp->ls_state->owner->so_server;
4372 struct nfs_release_lockowner_args *args;
4373 struct rpc_message msg = {
4374 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RELEASE_LOCKOWNER],
4377 if (server->nfs_client->cl_mvops->minor_version != 0)
4379 args = kmalloc(sizeof(*args), GFP_NOFS);
4382 args->lock_owner.clientid = server->nfs_client->cl_clientid;
4383 args->lock_owner.id = lsp->ls_id.id;
4384 msg.rpc_argp = args;
4385 rpc_call_async(server->client, &msg, 0, &nfs4_release_lockowner_ops, args);
4388 #define XATTR_NAME_NFSV4_ACL "system.nfs4_acl"
4390 int nfs4_setxattr(struct dentry *dentry, const char *key, const void *buf,
4391 size_t buflen, int flags)
4393 struct inode *inode = dentry->d_inode;
4395 if (strcmp(key, XATTR_NAME_NFSV4_ACL) != 0)
4398 return nfs4_proc_set_acl(inode, buf, buflen);
4401 /* The getxattr man page suggests returning -ENODATA for unknown attributes,
4402 * and that's what we'll do for e.g. user attributes that haven't been set.
4403 * But we'll follow ext2/ext3's lead by returning -EOPNOTSUPP for unsupported
4404 * attributes in kernel-managed attribute namespaces. */
4405 ssize_t nfs4_getxattr(struct dentry *dentry, const char *key, void *buf,
4408 struct inode *inode = dentry->d_inode;
4410 if (strcmp(key, XATTR_NAME_NFSV4_ACL) != 0)
4413 return nfs4_proc_get_acl(inode, buf, buflen);
4416 ssize_t nfs4_listxattr(struct dentry *dentry, char *buf, size_t buflen)
4418 size_t len = strlen(XATTR_NAME_NFSV4_ACL) + 1;
4420 if (!nfs4_server_supports_acls(NFS_SERVER(dentry->d_inode)))
4422 if (buf && buflen < len)
4425 memcpy(buf, XATTR_NAME_NFSV4_ACL, len);
4429 static void nfs_fixup_referral_attributes(struct nfs_fattr *fattr)
4431 if (!((fattr->valid & NFS_ATTR_FATTR_FILEID) &&
4432 (fattr->valid & NFS_ATTR_FATTR_FSID) &&
4433 (fattr->valid & NFS_ATTR_FATTR_V4_REFERRAL)))
4436 fattr->valid |= NFS_ATTR_FATTR_TYPE | NFS_ATTR_FATTR_MODE |
4437 NFS_ATTR_FATTR_NLINK;
4438 fattr->mode = S_IFDIR | S_IRUGO | S_IXUGO;
4442 int nfs4_proc_fs_locations(struct inode *dir, const struct qstr *name,
4443 struct nfs4_fs_locations *fs_locations, struct page *page)
4445 struct nfs_server *server = NFS_SERVER(dir);
4447 [0] = FATTR4_WORD0_FSID | FATTR4_WORD0_FS_LOCATIONS,
4448 [1] = FATTR4_WORD1_MOUNTED_ON_FILEID,
4450 struct nfs4_fs_locations_arg args = {
4451 .dir_fh = NFS_FH(dir),
4456 struct nfs4_fs_locations_res res = {
4457 .fs_locations = fs_locations,
4459 struct rpc_message msg = {
4460 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FS_LOCATIONS],
4466 dprintk("%s: start\n", __func__);
4467 nfs_fattr_init(&fs_locations->fattr);
4468 fs_locations->server = server;
4469 fs_locations->nlocations = 0;
4470 status = nfs4_call_sync(server, &msg, &args, &res, 0);
4471 nfs_fixup_referral_attributes(&fs_locations->fattr);
4472 dprintk("%s: returned status = %d\n", __func__, status);
4476 #ifdef CONFIG_NFS_V4_1
4478 * nfs4_proc_exchange_id()
4480 * Since the clientid has expired, all compounds using sessions
4481 * associated with the stale clientid will be returning
4482 * NFS4ERR_BADSESSION in the sequence operation, and will therefore
4483 * be in some phase of session reset.
4485 int nfs4_proc_exchange_id(struct nfs_client *clp, struct rpc_cred *cred)
4487 nfs4_verifier verifier;
4488 struct nfs41_exchange_id_args args = {
4490 .flags = clp->cl_exchange_flags,
4492 struct nfs41_exchange_id_res res = {
4496 struct rpc_message msg = {
4497 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_EXCHANGE_ID],
4504 dprintk("--> %s\n", __func__);
4505 BUG_ON(clp == NULL);
4507 /* Remove server-only flags */
4508 args.flags &= ~EXCHGID4_FLAG_CONFIRMED_R;
4510 p = (u32 *)verifier.data;
4511 *p++ = htonl((u32)clp->cl_boot_time.tv_sec);
4512 *p = htonl((u32)clp->cl_boot_time.tv_nsec);
4513 args.verifier = &verifier;
4516 args.id_len = scnprintf(args.id, sizeof(args.id),
4519 rpc_peeraddr2str(clp->cl_rpcclient,
4521 clp->cl_id_uniquifier);
4523 status = rpc_call_sync(clp->cl_rpcclient, &msg, 0);
4525 if (status != -NFS4ERR_CLID_INUSE)
4531 if (++clp->cl_id_uniquifier == 0)
4535 dprintk("<-- %s status= %d\n", __func__, status);
4539 struct nfs4_get_lease_time_data {
4540 struct nfs4_get_lease_time_args *args;
4541 struct nfs4_get_lease_time_res *res;
4542 struct nfs_client *clp;
4545 static void nfs4_get_lease_time_prepare(struct rpc_task *task,
4549 struct nfs4_get_lease_time_data *data =
4550 (struct nfs4_get_lease_time_data *)calldata;
4552 dprintk("--> %s\n", __func__);
4553 rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED);
4554 /* just setup sequence, do not trigger session recovery
4555 since we're invoked within one */
4556 ret = nfs41_setup_sequence(data->clp->cl_session,
4557 &data->args->la_seq_args,
4558 &data->res->lr_seq_res, 0, task);
4560 BUG_ON(ret == -EAGAIN);
4561 rpc_call_start(task);
4562 dprintk("<-- %s\n", __func__);
4566 * Called from nfs4_state_manager thread for session setup, so don't recover
4567 * from sequence operation or clientid errors.
4569 static void nfs4_get_lease_time_done(struct rpc_task *task, void *calldata)
4571 struct nfs4_get_lease_time_data *data =
4572 (struct nfs4_get_lease_time_data *)calldata;
4574 dprintk("--> %s\n", __func__);
4575 if (!nfs41_sequence_done(task, &data->res->lr_seq_res))
4577 switch (task->tk_status) {
4578 case -NFS4ERR_DELAY:
4579 case -NFS4ERR_GRACE:
4580 dprintk("%s Retry: tk_status %d\n", __func__, task->tk_status);
4581 rpc_delay(task, NFS4_POLL_RETRY_MIN);
4582 task->tk_status = 0;
4583 nfs_restart_rpc(task, data->clp);
4586 dprintk("<-- %s\n", __func__);
4589 struct rpc_call_ops nfs4_get_lease_time_ops = {
4590 .rpc_call_prepare = nfs4_get_lease_time_prepare,
4591 .rpc_call_done = nfs4_get_lease_time_done,
4594 int nfs4_proc_get_lease_time(struct nfs_client *clp, struct nfs_fsinfo *fsinfo)
4596 struct rpc_task *task;
4597 struct nfs4_get_lease_time_args args;
4598 struct nfs4_get_lease_time_res res = {
4599 .lr_fsinfo = fsinfo,
4601 struct nfs4_get_lease_time_data data = {
4606 struct rpc_message msg = {
4607 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GET_LEASE_TIME],
4611 struct rpc_task_setup task_setup = {
4612 .rpc_client = clp->cl_rpcclient,
4613 .rpc_message = &msg,
4614 .callback_ops = &nfs4_get_lease_time_ops,
4615 .callback_data = &data
4619 dprintk("--> %s\n", __func__);
4620 task = rpc_run_task(&task_setup);
4623 status = PTR_ERR(task);
4625 status = task->tk_status;
4628 dprintk("<-- %s return %d\n", __func__, status);
4634 * Reset a slot table
4636 static int nfs4_reset_slot_table(struct nfs4_slot_table *tbl, u32 max_reqs,
4639 struct nfs4_slot *new = NULL;
4643 dprintk("--> %s: max_reqs=%u, tbl->max_slots %d\n", __func__,
4644 max_reqs, tbl->max_slots);
4646 /* Does the newly negotiated max_reqs match the existing slot table? */
4647 if (max_reqs != tbl->max_slots) {
4649 new = kmalloc(max_reqs * sizeof(struct nfs4_slot),
4656 spin_lock(&tbl->slot_tbl_lock);
4659 tbl->max_slots = max_reqs;
4661 for (i = 0; i < tbl->max_slots; ++i)
4662 tbl->slots[i].seq_nr = ivalue;
4663 spin_unlock(&tbl->slot_tbl_lock);
4664 dprintk("%s: tbl=%p slots=%p max_slots=%d\n", __func__,
4665 tbl, tbl->slots, tbl->max_slots);
4667 dprintk("<-- %s: return %d\n", __func__, ret);
4672 * Reset the forechannel and backchannel slot tables
4674 static int nfs4_reset_slot_tables(struct nfs4_session *session)
4678 status = nfs4_reset_slot_table(&session->fc_slot_table,
4679 session->fc_attrs.max_reqs, 1);
4683 status = nfs4_reset_slot_table(&session->bc_slot_table,
4684 session->bc_attrs.max_reqs, 0);
4688 /* Destroy the slot table */
4689 static void nfs4_destroy_slot_tables(struct nfs4_session *session)
4691 if (session->fc_slot_table.slots != NULL) {
4692 kfree(session->fc_slot_table.slots);
4693 session->fc_slot_table.slots = NULL;
4695 if (session->bc_slot_table.slots != NULL) {
4696 kfree(session->bc_slot_table.slots);
4697 session->bc_slot_table.slots = NULL;
4703 * Initialize slot table
4705 static int nfs4_init_slot_table(struct nfs4_slot_table *tbl,
4706 int max_slots, int ivalue)
4708 struct nfs4_slot *slot;
4711 BUG_ON(max_slots > NFS4_MAX_SLOT_TABLE);
4713 dprintk("--> %s: max_reqs=%u\n", __func__, max_slots);
4715 slot = kcalloc(max_slots, sizeof(struct nfs4_slot), GFP_NOFS);
4720 spin_lock(&tbl->slot_tbl_lock);
4721 tbl->max_slots = max_slots;
4723 tbl->highest_used_slotid = -1; /* no slot is currently used */
4724 spin_unlock(&tbl->slot_tbl_lock);
4725 dprintk("%s: tbl=%p slots=%p max_slots=%d\n", __func__,
4726 tbl, tbl->slots, tbl->max_slots);
4728 dprintk("<-- %s: return %d\n", __func__, ret);
4733 * Initialize the forechannel and backchannel tables
4735 static int nfs4_init_slot_tables(struct nfs4_session *session)
4737 struct nfs4_slot_table *tbl;
4740 tbl = &session->fc_slot_table;
4741 if (tbl->slots == NULL) {
4742 status = nfs4_init_slot_table(tbl,
4743 session->fc_attrs.max_reqs, 1);
4748 tbl = &session->bc_slot_table;
4749 if (tbl->slots == NULL) {
4750 status = nfs4_init_slot_table(tbl,
4751 session->bc_attrs.max_reqs, 0);
4753 nfs4_destroy_slot_tables(session);
4759 struct nfs4_session *nfs4_alloc_session(struct nfs_client *clp)
4761 struct nfs4_session *session;
4762 struct nfs4_slot_table *tbl;
4764 session = kzalloc(sizeof(struct nfs4_session), GFP_NOFS);
4768 init_completion(&session->complete);
4770 tbl = &session->fc_slot_table;
4771 tbl->highest_used_slotid = -1;
4772 spin_lock_init(&tbl->slot_tbl_lock);
4773 rpc_init_priority_wait_queue(&tbl->slot_tbl_waitq, "ForeChannel Slot table");
4775 tbl = &session->bc_slot_table;
4776 tbl->highest_used_slotid = -1;
4777 spin_lock_init(&tbl->slot_tbl_lock);
4778 rpc_init_wait_queue(&tbl->slot_tbl_waitq, "BackChannel Slot table");
4780 session->session_state = 1<<NFS4_SESSION_INITING;
4786 void nfs4_destroy_session(struct nfs4_session *session)
4788 nfs4_proc_destroy_session(session);
4789 dprintk("%s Destroy backchannel for xprt %p\n",
4790 __func__, session->clp->cl_rpcclient->cl_xprt);
4791 xprt_destroy_backchannel(session->clp->cl_rpcclient->cl_xprt,
4792 NFS41_BC_MIN_CALLBACKS);
4793 nfs4_destroy_slot_tables(session);
4798 * Initialize the values to be used by the client in CREATE_SESSION
4799 * If nfs4_init_session set the fore channel request and response sizes,
4802 * Set the back channel max_resp_sz_cached to zero to force the client to
4803 * always set csa_cachethis to FALSE because the current implementation
4804 * of the back channel DRC only supports caching the CB_SEQUENCE operation.
4806 static void nfs4_init_channel_attrs(struct nfs41_create_session_args *args)
4808 struct nfs4_session *session = args->client->cl_session;
4809 unsigned int mxrqst_sz = session->fc_attrs.max_rqst_sz,
4810 mxresp_sz = session->fc_attrs.max_resp_sz;
4813 mxrqst_sz = NFS_MAX_FILE_IO_SIZE;
4815 mxresp_sz = NFS_MAX_FILE_IO_SIZE;
4816 /* Fore channel attributes */
4817 args->fc_attrs.headerpadsz = 0;
4818 args->fc_attrs.max_rqst_sz = mxrqst_sz;
4819 args->fc_attrs.max_resp_sz = mxresp_sz;
4820 args->fc_attrs.max_ops = NFS4_MAX_OPS;
4821 args->fc_attrs.max_reqs = session->clp->cl_rpcclient->cl_xprt->max_reqs;
4823 dprintk("%s: Fore Channel : max_rqst_sz=%u max_resp_sz=%u "
4824 "max_ops=%u max_reqs=%u\n",
4826 args->fc_attrs.max_rqst_sz, args->fc_attrs.max_resp_sz,
4827 args->fc_attrs.max_ops, args->fc_attrs.max_reqs);
4829 /* Back channel attributes */
4830 args->bc_attrs.headerpadsz = 0;
4831 args->bc_attrs.max_rqst_sz = PAGE_SIZE;
4832 args->bc_attrs.max_resp_sz = PAGE_SIZE;
4833 args->bc_attrs.max_resp_sz_cached = 0;
4834 args->bc_attrs.max_ops = NFS4_MAX_BACK_CHANNEL_OPS;
4835 args->bc_attrs.max_reqs = 1;
4837 dprintk("%s: Back Channel : max_rqst_sz=%u max_resp_sz=%u "
4838 "max_resp_sz_cached=%u max_ops=%u max_reqs=%u\n",
4840 args->bc_attrs.max_rqst_sz, args->bc_attrs.max_resp_sz,
4841 args->bc_attrs.max_resp_sz_cached, args->bc_attrs.max_ops,
4842 args->bc_attrs.max_reqs);
4845 static int _verify_channel_attr(char *chan, char *attr_name, u32 sent, u32 rcvd)
4849 printk(KERN_WARNING "%s: Session INVALID: %s channel %s increased. "
4850 "sent=%u rcvd=%u\n", __func__, chan, attr_name, sent, rcvd);
4854 #define _verify_fore_channel_attr(_name_) \
4855 _verify_channel_attr("fore", #_name_, \
4856 args->fc_attrs._name_, \
4857 session->fc_attrs._name_)
4859 #define _verify_back_channel_attr(_name_) \
4860 _verify_channel_attr("back", #_name_, \
4861 args->bc_attrs._name_, \
4862 session->bc_attrs._name_)
4865 * The server is not allowed to increase the fore channel header pad size,
4866 * maximum response size, or maximum number of operations.
4868 * The back channel attributes are only negotiatied down: We send what the
4869 * (back channel) server insists upon.
4871 static int nfs4_verify_channel_attrs(struct nfs41_create_session_args *args,
4872 struct nfs4_session *session)
4876 ret |= _verify_fore_channel_attr(headerpadsz);
4877 ret |= _verify_fore_channel_attr(max_resp_sz);
4878 ret |= _verify_fore_channel_attr(max_ops);
4880 ret |= _verify_back_channel_attr(headerpadsz);
4881 ret |= _verify_back_channel_attr(max_rqst_sz);
4882 ret |= _verify_back_channel_attr(max_resp_sz);
4883 ret |= _verify_back_channel_attr(max_resp_sz_cached);
4884 ret |= _verify_back_channel_attr(max_ops);
4885 ret |= _verify_back_channel_attr(max_reqs);
4890 static int _nfs4_proc_create_session(struct nfs_client *clp)
4892 struct nfs4_session *session = clp->cl_session;
4893 struct nfs41_create_session_args args = {
4895 .cb_program = NFS4_CALLBACK,
4897 struct nfs41_create_session_res res = {
4900 struct rpc_message msg = {
4901 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CREATE_SESSION],
4907 nfs4_init_channel_attrs(&args);
4908 args.flags = (SESSION4_PERSIST | SESSION4_BACK_CHAN);
4910 status = rpc_call_sync(session->clp->cl_rpcclient, &msg, 0);
4913 /* Verify the session's negotiated channel_attrs values */
4914 status = nfs4_verify_channel_attrs(&args, session);
4916 /* Increment the clientid slot sequence id */
4924 * Issues a CREATE_SESSION operation to the server.
4925 * It is the responsibility of the caller to verify the session is
4926 * expired before calling this routine.
4928 int nfs4_proc_create_session(struct nfs_client *clp)
4932 struct nfs4_session *session = clp->cl_session;
4934 dprintk("--> %s clp=%p session=%p\n", __func__, clp, session);
4936 status = _nfs4_proc_create_session(clp);
4940 /* Init and reset the fore channel */
4941 status = nfs4_init_slot_tables(session);
4942 dprintk("slot table initialization returned %d\n", status);
4945 status = nfs4_reset_slot_tables(session);
4946 dprintk("slot table reset returned %d\n", status);
4950 ptr = (unsigned *)&session->sess_id.data[0];
4951 dprintk("%s client>seqid %d sessionid %u:%u:%u:%u\n", __func__,
4952 clp->cl_seqid, ptr[0], ptr[1], ptr[2], ptr[3]);
4954 dprintk("<-- %s\n", __func__);
4959 * Issue the over-the-wire RPC DESTROY_SESSION.
4960 * The caller must serialize access to this routine.
4962 int nfs4_proc_destroy_session(struct nfs4_session *session)
4965 struct rpc_message msg;
4967 dprintk("--> nfs4_proc_destroy_session\n");
4969 /* session is still being setup */
4970 if (session->clp->cl_cons_state != NFS_CS_READY)
4973 msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DESTROY_SESSION];
4974 msg.rpc_argp = session;
4975 msg.rpc_resp = NULL;
4976 msg.rpc_cred = NULL;
4977 status = rpc_call_sync(session->clp->cl_rpcclient, &msg, 0);
4981 "Got error %d from the server on DESTROY_SESSION. "
4982 "Session has been destroyed regardless...\n", status);
4984 dprintk("<-- nfs4_proc_destroy_session\n");
4988 int nfs4_init_session(struct nfs_server *server)
4990 struct nfs_client *clp = server->nfs_client;
4991 struct nfs4_session *session;
4992 unsigned int rsize, wsize;
4995 if (!nfs4_has_session(clp))
4998 session = clp->cl_session;
4999 if (!test_and_clear_bit(NFS4_SESSION_INITING, &session->session_state))
5002 rsize = server->rsize;
5004 rsize = NFS_MAX_FILE_IO_SIZE;
5005 wsize = server->wsize;
5007 wsize = NFS_MAX_FILE_IO_SIZE;
5009 session->fc_attrs.max_rqst_sz = wsize + nfs41_maxwrite_overhead;
5010 session->fc_attrs.max_resp_sz = rsize + nfs41_maxread_overhead;
5012 ret = nfs4_recover_expired_lease(server);
5014 ret = nfs4_check_client_ready(clp);
5019 * Renew the cl_session lease.
5021 struct nfs4_sequence_data {
5022 struct nfs_client *clp;
5023 struct nfs4_sequence_args args;
5024 struct nfs4_sequence_res res;
5027 static void nfs41_sequence_release(void *data)
5029 struct nfs4_sequence_data *calldata = data;
5030 struct nfs_client *clp = calldata->clp;
5032 if (atomic_read(&clp->cl_count) > 1)
5033 nfs4_schedule_state_renewal(clp);
5034 nfs_put_client(clp);
5038 static int nfs41_sequence_handle_errors(struct rpc_task *task, struct nfs_client *clp)
5040 switch(task->tk_status) {
5041 case -NFS4ERR_DELAY:
5042 rpc_delay(task, NFS4_POLL_RETRY_MAX);
5045 nfs4_schedule_state_recovery(clp);
5050 static void nfs41_sequence_call_done(struct rpc_task *task, void *data)
5052 struct nfs4_sequence_data *calldata = data;
5053 struct nfs_client *clp = calldata->clp;
5055 if (!nfs41_sequence_done(task, task->tk_msg.rpc_resp))
5058 if (task->tk_status < 0) {
5059 dprintk("%s ERROR %d\n", __func__, task->tk_status);
5060 if (atomic_read(&clp->cl_count) == 1)
5063 if (nfs41_sequence_handle_errors(task, clp) == -EAGAIN) {
5064 rpc_restart_call_prepare(task);
5068 dprintk("%s rpc_cred %p\n", __func__, task->tk_msg.rpc_cred);
5070 dprintk("<-- %s\n", __func__);
5073 static void nfs41_sequence_prepare(struct rpc_task *task, void *data)
5075 struct nfs4_sequence_data *calldata = data;
5076 struct nfs_client *clp = calldata->clp;
5077 struct nfs4_sequence_args *args;
5078 struct nfs4_sequence_res *res;
5080 args = task->tk_msg.rpc_argp;
5081 res = task->tk_msg.rpc_resp;
5083 if (nfs41_setup_sequence(clp->cl_session, args, res, 0, task))
5085 rpc_call_start(task);
5088 static const struct rpc_call_ops nfs41_sequence_ops = {
5089 .rpc_call_done = nfs41_sequence_call_done,
5090 .rpc_call_prepare = nfs41_sequence_prepare,
5091 .rpc_release = nfs41_sequence_release,
5094 static struct rpc_task *_nfs41_proc_sequence(struct nfs_client *clp, struct rpc_cred *cred)
5096 struct nfs4_sequence_data *calldata;
5097 struct rpc_message msg = {
5098 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SEQUENCE],
5101 struct rpc_task_setup task_setup_data = {
5102 .rpc_client = clp->cl_rpcclient,
5103 .rpc_message = &msg,
5104 .callback_ops = &nfs41_sequence_ops,
5105 .flags = RPC_TASK_ASYNC | RPC_TASK_SOFT,
5108 if (!atomic_inc_not_zero(&clp->cl_count))
5109 return ERR_PTR(-EIO);
5110 calldata = kzalloc(sizeof(*calldata), GFP_NOFS);
5111 if (calldata == NULL) {
5112 nfs_put_client(clp);
5113 return ERR_PTR(-ENOMEM);
5115 msg.rpc_argp = &calldata->args;
5116 msg.rpc_resp = &calldata->res;
5117 calldata->clp = clp;
5118 task_setup_data.callback_data = calldata;
5120 return rpc_run_task(&task_setup_data);
5123 static int nfs41_proc_async_sequence(struct nfs_client *clp, struct rpc_cred *cred)
5125 struct rpc_task *task;
5128 task = _nfs41_proc_sequence(clp, cred);
5130 ret = PTR_ERR(task);
5133 dprintk("<-- %s status=%d\n", __func__, ret);
5137 static int nfs4_proc_sequence(struct nfs_client *clp, struct rpc_cred *cred)
5139 struct rpc_task *task;
5142 task = _nfs41_proc_sequence(clp, cred);
5144 ret = PTR_ERR(task);
5147 ret = rpc_wait_for_completion_task(task);
5149 ret = task->tk_status;
5152 dprintk("<-- %s status=%d\n", __func__, ret);
5156 struct nfs4_reclaim_complete_data {
5157 struct nfs_client *clp;
5158 struct nfs41_reclaim_complete_args arg;
5159 struct nfs41_reclaim_complete_res res;
5162 static void nfs4_reclaim_complete_prepare(struct rpc_task *task, void *data)
5164 struct nfs4_reclaim_complete_data *calldata = data;
5166 rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED);
5167 if (nfs41_setup_sequence(calldata->clp->cl_session,
5168 &calldata->arg.seq_args,
5169 &calldata->res.seq_res, 0, task))
5172 rpc_call_start(task);
5175 static int nfs41_reclaim_complete_handle_errors(struct rpc_task *task, struct nfs_client *clp)
5177 switch(task->tk_status) {
5179 case -NFS4ERR_COMPLETE_ALREADY:
5180 case -NFS4ERR_WRONG_CRED: /* What to do here? */
5182 case -NFS4ERR_DELAY:
5183 rpc_delay(task, NFS4_POLL_RETRY_MAX);
5186 nfs4_schedule_state_recovery(clp);
5191 static void nfs4_reclaim_complete_done(struct rpc_task *task, void *data)
5193 struct nfs4_reclaim_complete_data *calldata = data;
5194 struct nfs_client *clp = calldata->clp;
5195 struct nfs4_sequence_res *res = &calldata->res.seq_res;
5197 dprintk("--> %s\n", __func__);
5198 if (!nfs41_sequence_done(task, res))
5201 if (nfs41_reclaim_complete_handle_errors(task, clp) == -EAGAIN) {
5202 rpc_restart_call_prepare(task);
5205 dprintk("<-- %s\n", __func__);
5208 static void nfs4_free_reclaim_complete_data(void *data)
5210 struct nfs4_reclaim_complete_data *calldata = data;
5215 static const struct rpc_call_ops nfs4_reclaim_complete_call_ops = {
5216 .rpc_call_prepare = nfs4_reclaim_complete_prepare,
5217 .rpc_call_done = nfs4_reclaim_complete_done,
5218 .rpc_release = nfs4_free_reclaim_complete_data,
5222 * Issue a global reclaim complete.
5224 static int nfs41_proc_reclaim_complete(struct nfs_client *clp)
5226 struct nfs4_reclaim_complete_data *calldata;
5227 struct rpc_task *task;
5228 struct rpc_message msg = {
5229 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RECLAIM_COMPLETE],
5231 struct rpc_task_setup task_setup_data = {
5232 .rpc_client = clp->cl_rpcclient,
5233 .rpc_message = &msg,
5234 .callback_ops = &nfs4_reclaim_complete_call_ops,
5235 .flags = RPC_TASK_ASYNC,
5237 int status = -ENOMEM;
5239 dprintk("--> %s\n", __func__);
5240 calldata = kzalloc(sizeof(*calldata), GFP_NOFS);
5241 if (calldata == NULL)
5243 calldata->clp = clp;
5244 calldata->arg.one_fs = 0;
5246 msg.rpc_argp = &calldata->arg;
5247 msg.rpc_resp = &calldata->res;
5248 task_setup_data.callback_data = calldata;
5249 task = rpc_run_task(&task_setup_data);
5251 status = PTR_ERR(task);
5257 dprintk("<-- %s status=%d\n", __func__, status);
5262 nfs4_layoutget_prepare(struct rpc_task *task, void *calldata)
5264 struct nfs4_layoutget *lgp = calldata;
5265 struct inode *ino = lgp->args.inode;
5266 struct nfs_server *server = NFS_SERVER(ino);
5268 dprintk("--> %s\n", __func__);
5269 if (nfs4_setup_sequence(server, &lgp->args.seq_args,
5270 &lgp->res.seq_res, 0, task))
5272 rpc_call_start(task);
5275 static void nfs4_layoutget_done(struct rpc_task *task, void *calldata)
5277 struct nfs4_layoutget *lgp = calldata;
5278 struct nfs_server *server = NFS_SERVER(lgp->args.inode);
5280 dprintk("--> %s\n", __func__);
5282 if (!nfs4_sequence_done(task, &lgp->res.seq_res))
5285 switch (task->tk_status) {
5288 case -NFS4ERR_LAYOUTTRYLATER:
5289 case -NFS4ERR_RECALLCONFLICT:
5290 task->tk_status = -NFS4ERR_DELAY;
5293 if (nfs4_async_handle_error(task, server, NULL) == -EAGAIN) {
5294 rpc_restart_call_prepare(task);
5298 lgp->status = task->tk_status;
5299 dprintk("<-- %s\n", __func__);
5302 static void nfs4_layoutget_release(void *calldata)
5304 struct nfs4_layoutget *lgp = calldata;
5306 dprintk("--> %s\n", __func__);
5307 put_layout_hdr(lgp->args.inode);
5308 if (lgp->res.layout.buf != NULL)
5309 free_page((unsigned long) lgp->res.layout.buf);
5310 put_nfs_open_context(lgp->args.ctx);
5312 dprintk("<-- %s\n", __func__);
5315 static const struct rpc_call_ops nfs4_layoutget_call_ops = {
5316 .rpc_call_prepare = nfs4_layoutget_prepare,
5317 .rpc_call_done = nfs4_layoutget_done,
5318 .rpc_release = nfs4_layoutget_release,
5321 int nfs4_proc_layoutget(struct nfs4_layoutget *lgp)
5323 struct nfs_server *server = NFS_SERVER(lgp->args.inode);
5324 struct rpc_task *task;
5325 struct rpc_message msg = {
5326 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTGET],
5327 .rpc_argp = &lgp->args,
5328 .rpc_resp = &lgp->res,
5330 struct rpc_task_setup task_setup_data = {
5331 .rpc_client = server->client,
5332 .rpc_message = &msg,
5333 .callback_ops = &nfs4_layoutget_call_ops,
5334 .callback_data = lgp,
5335 .flags = RPC_TASK_ASYNC,
5339 dprintk("--> %s\n", __func__);
5341 lgp->res.layout.buf = (void *)__get_free_page(GFP_NOFS);
5342 if (lgp->res.layout.buf == NULL) {
5343 nfs4_layoutget_release(lgp);
5347 lgp->res.seq_res.sr_slot = NULL;
5348 task = rpc_run_task(&task_setup_data);
5350 return PTR_ERR(task);
5351 status = nfs4_wait_for_completion_rpc_task(task);
5354 status = lgp->status;
5357 status = pnfs_layout_process(lgp);
5360 dprintk("<-- %s status=%d\n", __func__, status);
5365 _nfs4_proc_getdeviceinfo(struct nfs_server *server, struct pnfs_device *pdev)
5367 struct nfs4_getdeviceinfo_args args = {
5370 struct nfs4_getdeviceinfo_res res = {
5373 struct rpc_message msg = {
5374 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETDEVICEINFO],
5380 dprintk("--> %s\n", __func__);
5381 status = nfs4_call_sync(server, &msg, &args, &res, 0);
5382 dprintk("<-- %s status=%d\n", __func__, status);
5387 int nfs4_proc_getdeviceinfo(struct nfs_server *server, struct pnfs_device *pdev)
5389 struct nfs4_exception exception = { };
5393 err = nfs4_handle_exception(server,
5394 _nfs4_proc_getdeviceinfo(server, pdev),
5396 } while (exception.retry);
5399 EXPORT_SYMBOL_GPL(nfs4_proc_getdeviceinfo);
5401 #endif /* CONFIG_NFS_V4_1 */
5403 struct nfs4_state_recovery_ops nfs40_reboot_recovery_ops = {
5404 .owner_flag_bit = NFS_OWNER_RECLAIM_REBOOT,
5405 .state_flag_bit = NFS_STATE_RECLAIM_REBOOT,
5406 .recover_open = nfs4_open_reclaim,
5407 .recover_lock = nfs4_lock_reclaim,
5408 .establish_clid = nfs4_init_clientid,
5409 .get_clid_cred = nfs4_get_setclientid_cred,
5412 #if defined(CONFIG_NFS_V4_1)
5413 struct nfs4_state_recovery_ops nfs41_reboot_recovery_ops = {
5414 .owner_flag_bit = NFS_OWNER_RECLAIM_REBOOT,
5415 .state_flag_bit = NFS_STATE_RECLAIM_REBOOT,
5416 .recover_open = nfs4_open_reclaim,
5417 .recover_lock = nfs4_lock_reclaim,
5418 .establish_clid = nfs41_init_clientid,
5419 .get_clid_cred = nfs4_get_exchange_id_cred,
5420 .reclaim_complete = nfs41_proc_reclaim_complete,
5422 #endif /* CONFIG_NFS_V4_1 */
5424 struct nfs4_state_recovery_ops nfs40_nograce_recovery_ops = {
5425 .owner_flag_bit = NFS_OWNER_RECLAIM_NOGRACE,
5426 .state_flag_bit = NFS_STATE_RECLAIM_NOGRACE,
5427 .recover_open = nfs4_open_expired,
5428 .recover_lock = nfs4_lock_expired,
5429 .establish_clid = nfs4_init_clientid,
5430 .get_clid_cred = nfs4_get_setclientid_cred,
5433 #if defined(CONFIG_NFS_V4_1)
5434 struct nfs4_state_recovery_ops nfs41_nograce_recovery_ops = {
5435 .owner_flag_bit = NFS_OWNER_RECLAIM_NOGRACE,
5436 .state_flag_bit = NFS_STATE_RECLAIM_NOGRACE,
5437 .recover_open = nfs4_open_expired,
5438 .recover_lock = nfs4_lock_expired,
5439 .establish_clid = nfs41_init_clientid,
5440 .get_clid_cred = nfs4_get_exchange_id_cred,
5442 #endif /* CONFIG_NFS_V4_1 */
5444 struct nfs4_state_maintenance_ops nfs40_state_renewal_ops = {
5445 .sched_state_renewal = nfs4_proc_async_renew,
5446 .get_state_renewal_cred_locked = nfs4_get_renew_cred_locked,
5447 .renew_lease = nfs4_proc_renew,
5450 #if defined(CONFIG_NFS_V4_1)
5451 struct nfs4_state_maintenance_ops nfs41_state_renewal_ops = {
5452 .sched_state_renewal = nfs41_proc_async_sequence,
5453 .get_state_renewal_cred_locked = nfs4_get_machine_cred_locked,
5454 .renew_lease = nfs4_proc_sequence,
5458 static const struct nfs4_minor_version_ops nfs_v4_0_minor_ops = {
5460 .call_sync = _nfs4_call_sync,
5461 .validate_stateid = nfs4_validate_delegation_stateid,
5462 .reboot_recovery_ops = &nfs40_reboot_recovery_ops,
5463 .nograce_recovery_ops = &nfs40_nograce_recovery_ops,
5464 .state_renewal_ops = &nfs40_state_renewal_ops,
5467 #if defined(CONFIG_NFS_V4_1)
5468 static const struct nfs4_minor_version_ops nfs_v4_1_minor_ops = {
5470 .call_sync = _nfs4_call_sync_session,
5471 .validate_stateid = nfs41_validate_delegation_stateid,
5472 .reboot_recovery_ops = &nfs41_reboot_recovery_ops,
5473 .nograce_recovery_ops = &nfs41_nograce_recovery_ops,
5474 .state_renewal_ops = &nfs41_state_renewal_ops,
5478 const struct nfs4_minor_version_ops *nfs_v4_minor_ops[] = {
5479 [0] = &nfs_v4_0_minor_ops,
5480 #if defined(CONFIG_NFS_V4_1)
5481 [1] = &nfs_v4_1_minor_ops,
5485 static const struct inode_operations nfs4_file_inode_operations = {
5486 .permission = nfs_permission,
5487 .getattr = nfs_getattr,
5488 .setattr = nfs_setattr,
5489 .getxattr = nfs4_getxattr,
5490 .setxattr = nfs4_setxattr,
5491 .listxattr = nfs4_listxattr,
5494 const struct nfs_rpc_ops nfs_v4_clientops = {
5495 .version = 4, /* protocol version */
5496 .dentry_ops = &nfs4_dentry_operations,
5497 .dir_inode_ops = &nfs4_dir_inode_operations,
5498 .file_inode_ops = &nfs4_file_inode_operations,
5499 .getroot = nfs4_proc_get_root,
5500 .getattr = nfs4_proc_getattr,
5501 .setattr = nfs4_proc_setattr,
5502 .lookupfh = nfs4_proc_lookupfh,
5503 .lookup = nfs4_proc_lookup,
5504 .access = nfs4_proc_access,
5505 .readlink = nfs4_proc_readlink,
5506 .create = nfs4_proc_create,
5507 .remove = nfs4_proc_remove,
5508 .unlink_setup = nfs4_proc_unlink_setup,
5509 .unlink_done = nfs4_proc_unlink_done,
5510 .rename = nfs4_proc_rename,
5511 .rename_setup = nfs4_proc_rename_setup,
5512 .rename_done = nfs4_proc_rename_done,
5513 .link = nfs4_proc_link,
5514 .symlink = nfs4_proc_symlink,
5515 .mkdir = nfs4_proc_mkdir,
5516 .rmdir = nfs4_proc_remove,
5517 .readdir = nfs4_proc_readdir,
5518 .mknod = nfs4_proc_mknod,
5519 .statfs = nfs4_proc_statfs,
5520 .fsinfo = nfs4_proc_fsinfo,
5521 .pathconf = nfs4_proc_pathconf,
5522 .set_capabilities = nfs4_server_capabilities,
5523 .decode_dirent = nfs4_decode_dirent,
5524 .read_setup = nfs4_proc_read_setup,
5525 .read_done = nfs4_read_done,
5526 .write_setup = nfs4_proc_write_setup,
5527 .write_done = nfs4_write_done,
5528 .commit_setup = nfs4_proc_commit_setup,
5529 .commit_done = nfs4_commit_done,
5530 .lock = nfs4_proc_lock,
5531 .clear_acl_cache = nfs4_zap_acl_attr,
5532 .close_context = nfs4_close_context,
5533 .open_context = nfs4_atomic_open,