1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
2 * vim:expandtab:shiftwidth=8:tabstop=8:
4 * Copyright (C) 2001 Cluster File Systems, Inc. <braam@clusterfs.com>
6 * This file is part of Lustre, http://www.lustre.org.
8 * Lustre is free software; you can redistribute it and/or
9 * modify it under the terms of version 2 of the GNU General Public
10 * License as published by the Free Software Foundation.
12 * Lustre is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
17 * You should have received a copy of the GNU General Public License
18 * along with Lustre; if not, write to the Free Software
19 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
21 * Basic Lustre library routines.
28 #include <libcfs/kp30.h>
29 #include <lustre/lustre_idl.h>
30 #include <lustre_ver.h>
31 #include <lustre_cfg.h>
32 #if defined(__linux__)
33 #include <linux/lustre_lib.h>
34 #elif defined(__APPLE__)
35 #include <darwin/lustre_lib.h>
36 #elif defined(__WINNT__)
37 #include <winnt/lustre_lib.h>
39 #error Unsupported operating system.
43 unsigned int ll_rand(void); /* returns a random 32-bit integer */
44 void ll_srand(unsigned int, unsigned int); /* seed the generator */
45 void ll_get_random_bytes(void *buf, int size);
48 struct ptlrpc_request;
52 #include <lustre_ha.h>
53 #include <lustre_net.h>
56 void target_client_add_cb(struct obd_device *obd, __u64 transno, void *cb_data,
58 int target_handle_connect(struct ptlrpc_request *req);
59 int target_handle_disconnect(struct ptlrpc_request *req);
60 void target_destroy_export(struct obd_export *exp);
61 int target_handle_reconnect(struct lustre_handle *conn, struct obd_export *exp,
62 struct obd_uuid *cluuid, int);
63 int target_pack_pool_reply(struct ptlrpc_request *req);
64 int target_handle_ping(struct ptlrpc_request *req);
65 void target_committed_to_req(struct ptlrpc_request *req);
67 #ifdef HAVE_QUOTA_SUPPORT
68 /* quotacheck callback, dqacq/dqrel callback handler */
69 int target_handle_qc_callback(struct ptlrpc_request *req);
70 int target_handle_dqacq_callback(struct ptlrpc_request *req);
72 #define target_handle_dqacq_callback(req) ldlm_callback_reply(req, -ENOTSUPP)
73 #define target_handle_qc_callback(req) (0)
76 void target_cancel_recovery_timer(struct obd_device *obd);
78 #define OBD_RECOVERY_TIMEOUT (obd_timeout * 5 / 2) /* *waves hands* */
79 void target_start_recovery_timer(struct obd_device *obd);
80 int target_start_recovery_thread(struct obd_device *obd,
81 svc_handler_t handler);
82 void target_stop_recovery_thread(struct obd_device *obd);
83 void target_cleanup_recovery(struct obd_device *obd);
84 int target_queue_recovery_request(struct ptlrpc_request *req,
85 struct obd_device *obd);
86 int target_queue_final_reply(struct ptlrpc_request *req, int rc);
87 void target_send_reply(struct ptlrpc_request *req, int rc, int fail_id);
91 int client_sanobd_setup(struct obd_device *obddev, struct lustre_cfg* lcfg);
92 struct client_obd *client_conn2cli(struct lustre_handle *conn);
95 struct obd_client_handle {
96 struct lustre_handle och_fh;
97 struct lu_fid och_fid;
98 struct md_open_data *och_mod;
102 #define OBD_CLIENT_HANDLE_MAGIC 0xd15ea5ed
105 void statfs_pack(struct obd_statfs *osfs, struct kstatfs *sfs);
106 void statfs_unpack(struct kstatfs *sfs, struct obd_statfs *osfs);
112 struct semaphore l_sem;
116 void l_lock_init(struct lustre_lock *);
117 void l_lock(struct lustre_lock *);
118 void l_unlock(struct lustre_lock *);
119 int l_has_lock(struct lustre_lock *);
125 #define OBD_IOCTL_VERSION 0x00010004
127 struct obd_ioctl_data {
135 struct obdo ioc_obdo1;
136 struct obdo ioc_obdo2;
147 /* buffers the kernel will treat as user pointers */
153 /* inline buffers for various arguments */
166 struct obd_ioctl_hdr {
171 static inline int obd_ioctl_packlen(struct obd_ioctl_data *data)
173 int len = size_round(sizeof(struct obd_ioctl_data));
174 len += size_round(data->ioc_inllen1);
175 len += size_round(data->ioc_inllen2);
176 len += size_round(data->ioc_inllen3);
177 len += size_round(data->ioc_inllen4);
182 static inline int obd_ioctl_is_invalid(struct obd_ioctl_data *data)
184 if (data->ioc_len > (1<<30)) {
185 CERROR("OBD ioctl: ioc_len larger than 1<<30\n");
188 if (data->ioc_inllen1 > (1<<30)) {
189 CERROR("OBD ioctl: ioc_inllen1 larger than 1<<30\n");
192 if (data->ioc_inllen2 > (1<<30)) {
193 CERROR("OBD ioctl: ioc_inllen2 larger than 1<<30\n");
196 if (data->ioc_inllen3 > (1<<30)) {
197 CERROR("OBD ioctl: ioc_inllen3 larger than 1<<30\n");
200 if (data->ioc_inllen4 > (1<<30)) {
201 CERROR("OBD ioctl: ioc_inllen4 larger than 1<<30\n");
204 if (data->ioc_inlbuf1 && !data->ioc_inllen1) {
205 CERROR("OBD ioctl: inlbuf1 pointer but 0 length\n");
208 if (data->ioc_inlbuf2 && !data->ioc_inllen2) {
209 CERROR("OBD ioctl: inlbuf2 pointer but 0 length\n");
212 if (data->ioc_inlbuf3 && !data->ioc_inllen3) {
213 CERROR("OBD ioctl: inlbuf3 pointer but 0 length\n");
216 if (data->ioc_inlbuf4 && !data->ioc_inllen4) {
217 CERROR("OBD ioctl: inlbuf4 pointer but 0 length\n");
220 if (data->ioc_pbuf1 && !data->ioc_plen1) {
221 CERROR("OBD ioctl: pbuf1 pointer but 0 length\n");
224 if (data->ioc_pbuf2 && !data->ioc_plen2) {
225 CERROR("OBD ioctl: pbuf2 pointer but 0 length\n");
228 if (data->ioc_plen1 && !data->ioc_pbuf1) {
229 CERROR("OBD ioctl: plen1 set but NULL pointer\n");
232 if (data->ioc_plen2 && !data->ioc_pbuf2) {
233 CERROR("OBD ioctl: plen2 set but NULL pointer\n");
236 if (obd_ioctl_packlen(data) > data->ioc_len) {
237 CERROR("OBD ioctl: packlen exceeds ioc_len (%d > %d)\n",
238 obd_ioctl_packlen(data), data->ioc_len);
245 static inline int obd_ioctl_pack(struct obd_ioctl_data *data, char **pbuf,
249 struct obd_ioctl_data *overlay;
250 data->ioc_len = obd_ioctl_packlen(data);
251 data->ioc_version = OBD_IOCTL_VERSION;
253 if (*pbuf && data->ioc_len > max)
256 *pbuf = malloc(data->ioc_len);
260 overlay = (struct obd_ioctl_data *)*pbuf;
261 memcpy(*pbuf, data, sizeof(*data));
263 ptr = overlay->ioc_bulk;
264 if (data->ioc_inlbuf1)
265 LOGL(data->ioc_inlbuf1, data->ioc_inllen1, ptr);
266 if (data->ioc_inlbuf2)
267 LOGL(data->ioc_inlbuf2, data->ioc_inllen2, ptr);
268 if (data->ioc_inlbuf3)
269 LOGL(data->ioc_inlbuf3, data->ioc_inllen3, ptr);
270 if (data->ioc_inlbuf4)
271 LOGL(data->ioc_inlbuf4, data->ioc_inllen4, ptr);
272 if (obd_ioctl_is_invalid(overlay))
278 static inline int obd_ioctl_unpack(struct obd_ioctl_data *data, char *pbuf,
282 struct obd_ioctl_data *overlay;
286 overlay = (struct obd_ioctl_data *)pbuf;
288 /* Preserve the caller's buffer pointers */
289 overlay->ioc_inlbuf1 = data->ioc_inlbuf1;
290 overlay->ioc_inlbuf2 = data->ioc_inlbuf2;
291 overlay->ioc_inlbuf3 = data->ioc_inlbuf3;
292 overlay->ioc_inlbuf4 = data->ioc_inlbuf4;
294 memcpy(data, pbuf, sizeof(*data));
296 ptr = overlay->ioc_bulk;
297 if (data->ioc_inlbuf1)
298 LOGU(data->ioc_inlbuf1, data->ioc_inllen1, ptr);
299 if (data->ioc_inlbuf2)
300 LOGU(data->ioc_inlbuf2, data->ioc_inllen2, ptr);
301 if (data->ioc_inlbuf3)
302 LOGU(data->ioc_inlbuf3, data->ioc_inllen3, ptr);
303 if (data->ioc_inlbuf4)
304 LOGU(data->ioc_inlbuf4, data->ioc_inllen4, ptr);
310 #include <obd_support.h>
313 /* function defined in lustre/obdclass/<platform>/<platform>-module.c */
314 int obd_ioctl_getdata(char **buf, int *len, void *arg);
315 int obd_ioctl_popdata(void *arg, void *data, int len);
317 /* buffer MUST be at least the size of obd_ioctl_hdr */
318 static inline int obd_ioctl_getdata(char **buf, int *len, void *arg)
320 struct obd_ioctl_hdr hdr;
321 struct obd_ioctl_data *data;
326 err = copy_from_user(&hdr, (void *)arg, sizeof(hdr));
330 if (hdr.ioc_version != OBD_IOCTL_VERSION) {
331 CERROR("Version mismatch kernel vs application\n");
335 if (hdr.ioc_len > OBD_MAX_IOCTL_BUFFER) {
336 CERROR("User buffer len %d exceeds %d max buffer\n",
337 hdr.ioc_len, OBD_MAX_IOCTL_BUFFER);
341 if (hdr.ioc_len < sizeof(struct obd_ioctl_data)) {
342 CERROR("User buffer too small for ioctl (%d)\n", hdr.ioc_len);
346 /* XXX allocate this more intelligently, using kmalloc when
348 OBD_VMALLOC(*buf, hdr.ioc_len);
350 CERROR("Cannot allocate control buffer of len %d\n",
355 data = (struct obd_ioctl_data *)*buf;
357 err = copy_from_user(*buf, (void *)arg, hdr.ioc_len);
359 OBD_VFREE(*buf, hdr.ioc_len);
363 if (obd_ioctl_is_invalid(data)) {
364 CERROR("ioctl not correctly formatted\n");
365 OBD_VFREE(*buf, hdr.ioc_len);
369 if (data->ioc_inllen1) {
370 data->ioc_inlbuf1 = &data->ioc_bulk[0];
371 offset += size_round(data->ioc_inllen1);
374 if (data->ioc_inllen2) {
375 data->ioc_inlbuf2 = &data->ioc_bulk[0] + offset;
376 offset += size_round(data->ioc_inllen2);
379 if (data->ioc_inllen3) {
380 data->ioc_inlbuf3 = &data->ioc_bulk[0] + offset;
381 offset += size_round(data->ioc_inllen3);
384 if (data->ioc_inllen4) {
385 data->ioc_inlbuf4 = &data->ioc_bulk[0] + offset;
391 static inline int obd_ioctl_popdata(void *arg, void *data, int len)
393 int err = copy_to_user(arg, data, len);
400 static inline void obd_ioctl_freedata(char *buf, int len)
410 * BSD ioctl description:
411 * #define IOC_V1 _IOR(g, n1, long)
412 * #define IOC_V2 _IOW(g, n2, long)
414 * ioctl(f, IOC_V1, arg);
415 * arg will be treated as a long value,
417 * ioctl(f, IOC_V2, arg)
418 * arg will be treated as a pointer, bsd will call
419 * copyin(buf, arg, sizeof(long))
421 * To make BSD ioctl handles argument correctly and simplely,
422 * we change _IOR to _IOWR so BSD will copyin obd_ioctl_data
423 * for us. Does this change affect Linux? (XXX Liang)
425 #define OBD_IOC_CREATE _IOWR('f', 101, OBD_IOC_DATA_TYPE)
426 #define OBD_IOC_DESTROY _IOW ('f', 104, OBD_IOC_DATA_TYPE)
427 #define OBD_IOC_PREALLOCATE _IOWR('f', 105, OBD_IOC_DATA_TYPE)
429 #define OBD_IOC_SETATTR _IOW ('f', 107, OBD_IOC_DATA_TYPE)
430 #define OBD_IOC_GETATTR _IOWR ('f', 108, OBD_IOC_DATA_TYPE)
431 #define OBD_IOC_READ _IOWR('f', 109, OBD_IOC_DATA_TYPE)
432 #define OBD_IOC_WRITE _IOWR('f', 110, OBD_IOC_DATA_TYPE)
435 #define OBD_IOC_STATFS _IOWR('f', 113, OBD_IOC_DATA_TYPE)
436 #define OBD_IOC_SYNC _IOW ('f', 114, OBD_IOC_DATA_TYPE)
437 #define OBD_IOC_READ2 _IOWR('f', 115, OBD_IOC_DATA_TYPE)
438 #define OBD_IOC_FORMAT _IOWR('f', 116, OBD_IOC_DATA_TYPE)
439 #define OBD_IOC_PARTITION _IOWR('f', 117, OBD_IOC_DATA_TYPE)
440 #define OBD_IOC_COPY _IOWR('f', 120, OBD_IOC_DATA_TYPE)
441 #define OBD_IOC_MIGR _IOWR('f', 121, OBD_IOC_DATA_TYPE)
442 #define OBD_IOC_PUNCH _IOWR('f', 122, OBD_IOC_DATA_TYPE)
444 #define OBD_IOC_MODULE_DEBUG _IOWR('f', 124, OBD_IOC_DATA_TYPE)
445 #define OBD_IOC_BRW_READ _IOWR('f', 125, OBD_IOC_DATA_TYPE)
446 #define OBD_IOC_BRW_WRITE _IOWR('f', 126, OBD_IOC_DATA_TYPE)
447 #define OBD_IOC_NAME2DEV _IOWR('f', 127, OBD_IOC_DATA_TYPE)
448 #define OBD_IOC_UUID2DEV _IOWR('f', 130, OBD_IOC_DATA_TYPE)
449 #define OBD_IOC_GETNAME _IOWR('f', 131, OBD_IOC_DATA_TYPE)
451 #define OBD_IOC_LOV_GET_CONFIG _IOWR('f', 132, OBD_IOC_DATA_TYPE)
452 #define OBD_IOC_CLIENT_RECOVER _IOW ('f', 133, OBD_IOC_DATA_TYPE)
454 #define OBD_IOC_DEC_FS_USE_COUNT _IO ('f', 139 )
455 #define OBD_IOC_NO_TRANSNO _IOW ('f', 140, OBD_IOC_DATA_TYPE)
456 #define OBD_IOC_SET_READONLY _IOW ('f', 141, OBD_IOC_DATA_TYPE)
457 #define OBD_IOC_ABORT_RECOVERY _IOR ('f', 142, OBD_IOC_DATA_TYPE)
459 #define OBD_IOC_ROOT_SQUASH _IOWR('f', 143, OBD_IOC_DATA_TYPE)
461 #define OBD_GET_VERSION _IOWR ('f', 144, OBD_IOC_DATA_TYPE)
463 #define OBD_IOC_GSS_SUPPORT _IOWR('f', 145, OBD_IOC_DATA_TYPE)
465 #define OBD_IOC_CLOSE_UUID _IOWR ('f', 147, OBD_IOC_DATA_TYPE)
467 #define OBD_IOC_GETDEVICE _IOWR ('f', 149, OBD_IOC_DATA_TYPE)
469 #define OBD_IOC_LOV_SETSTRIPE _IOW ('f', 154, OBD_IOC_DATA_TYPE)
470 #define OBD_IOC_LOV_GETSTRIPE _IOW ('f', 155, OBD_IOC_DATA_TYPE)
471 #define OBD_IOC_LOV_SETEA _IOW ('f', 156, OBD_IOC_DATA_TYPE)
473 #define OBD_IOC_QUOTACHECK _IOW ('f', 160, int)
474 #define OBD_IOC_POLL_QUOTACHECK _IOR ('f', 161, struct if_quotacheck *)
475 #define OBD_IOC_QUOTACTL _IOWR('f', 162, struct if_quotactl *)
477 #define OBD_IOC_MOUNTOPT _IOWR('f', 170, OBD_IOC_DATA_TYPE)
479 #define OBD_IOC_RECORD _IOWR('f', 180, OBD_IOC_DATA_TYPE)
480 #define OBD_IOC_ENDRECORD _IOWR('f', 181, OBD_IOC_DATA_TYPE)
481 #define OBD_IOC_PARSE _IOWR('f', 182, OBD_IOC_DATA_TYPE)
482 #define OBD_IOC_DORECORD _IOWR('f', 183, OBD_IOC_DATA_TYPE)
483 #define OBD_IOC_PROCESS_CFG _IOWR('f', 184, OBD_IOC_DATA_TYPE)
484 #define OBD_IOC_DUMP_LOG _IOWR('f', 185, OBD_IOC_DATA_TYPE)
485 #define OBD_IOC_CLEAR_LOG _IOWR('f', 186, OBD_IOC_DATA_TYPE)
486 #define OBD_IOC_PARAM _IOW ('f', 187, OBD_IOC_DATA_TYPE)
488 #define OBD_IOC_CATLOGLIST _IOWR('f', 190, OBD_IOC_DATA_TYPE)
489 #define OBD_IOC_LLOG_INFO _IOWR('f', 191, OBD_IOC_DATA_TYPE)
490 #define OBD_IOC_LLOG_PRINT _IOWR('f', 192, OBD_IOC_DATA_TYPE)
491 #define OBD_IOC_LLOG_CANCEL _IOWR('f', 193, OBD_IOC_DATA_TYPE)
492 #define OBD_IOC_LLOG_REMOVE _IOWR('f', 194, OBD_IOC_DATA_TYPE)
493 #define OBD_IOC_LLOG_CHECK _IOWR('f', 195, OBD_IOC_DATA_TYPE)
494 #define OBD_IOC_LLOG_CATINFO _IOWR('f', 196, OBD_IOC_DATA_TYPE)
496 #define ECHO_IOC_GET_STRIPE _IOWR('f', 200, OBD_IOC_DATA_TYPE)
497 #define ECHO_IOC_SET_STRIPE _IOWR('f', 201, OBD_IOC_DATA_TYPE)
498 #define ECHO_IOC_ENQUEUE _IOWR('f', 202, OBD_IOC_DATA_TYPE)
499 #define ECHO_IOC_CANCEL _IOWR('f', 203, OBD_IOC_DATA_TYPE)
501 /* XXX _IOWR('f', 250, long) has been defined in
502 * lnet/include/libcfs/kp30.h for debug, don't use it
505 /* Until such time as we get_info the per-stripe maximum from the OST,
506 * we define this to be 2T - 4k, which is the ext3 maxbytes. */
507 #define LUSTRE_STRIPE_MAXBYTES 0x1fffffff000ULL
509 /* #define POISON_BULK 0 */
512 * l_wait_event is a flexible sleeping function, permitting simple caller
513 * configuration of interrupt and timeout sensitivity along with actions to
514 * be performed in the event of either exception.
516 * The first form of usage looks like this:
518 * struct l_wait_info lwi = LWI_TIMEOUT_INTR(timeout, timeout_handler,
519 * intr_handler, callback_data);
520 * rc = l_wait_event(waitq, condition, &lwi);
522 * l_wait_event() makes the current process wait on 'waitq' until 'condition'
523 * is TRUE or a "killable" signal (SIGTERM, SIKGILL, SIGINT) is pending. It
524 * returns 0 to signify 'condition' is TRUE, but if a signal wakes it before
525 * 'condition' becomes true, it optionally calls the specified 'intr_handler'
526 * if not NULL, and returns -EINTR.
528 * If a non-zero timeout is specified, signals are ignored until the timeout
529 * has expired. At this time, if 'timeout_handler' is not NULL it is called.
530 * If it returns FALSE l_wait_event() continues to wait as described above with
531 * signals enabled. Otherwise it returns -ETIMEDOUT.
533 * LWI_INTR(intr_handler, callback_data) is shorthand for
534 * LWI_TIMEOUT_INTR(0, NULL, intr_handler, callback_data)
536 * The second form of usage looks like this:
538 * struct l_wait_info lwi = LWI_TIMEOUT(timeout, timeout_handler);
539 * rc = l_wait_event(waitq, condition, &lwi);
541 * This form is the same as the first except that it COMPLETELY IGNORES
542 * SIGNALS. The caller must therefore beware that if 'timeout' is zero, or if
543 * 'timeout_handler' is not NULL and returns FALSE, then the ONLY thing that
544 * can unblock the current process is 'condition' becoming TRUE.
546 * Another form of usage is:
547 * struct l_wait_info lwi = LWI_TIMEOUT_INTERVAL(timeout, interval,
549 * rc = l_wait_event(waitq, condition, &lwi);
550 * This is the same as previous case, but condition is checked once every
551 * 'interval' jiffies (if non-zero).
553 * Subtle synchronization point: this macro does *not* necessary takes
554 * wait-queue spin-lock before returning, and, hence, following idiom is safe
555 * ONLY when caller provides some external locking:
559 * l_wait_event(&obj->wq, ....); (1)
561 * wake_up(&obj->wq): (2)
562 * spin_lock(&q->lock); (2.1)
563 * __wake_up_common(q, ...); (2.2)
564 * spin_unlock(&q->lock, flags); (2.3)
566 * OBD_FREE_PTR(obj); (3)
568 * As l_wait_event() may "short-cut" execution and return without taking
569 * wait-queue spin-lock, some additional synchronization is necessary to
570 * guarantee that step (3) can begin only after (2.3) finishes.
572 * XXX nikita: some ptlrpc daemon threads have races of that sort.
576 #define LWI_ON_SIGNAL_NOOP ((void (*)(void *))(-1))
579 cfs_duration_t lwi_timeout;
580 cfs_duration_t lwi_interval;
581 int (*lwi_on_timeout)(void *);
582 void (*lwi_on_signal)(void *);
586 /* NB: LWI_TIMEOUT ignores signals completely */
587 #define LWI_TIMEOUT(time, cb, data) \
588 ((struct l_wait_info) { \
589 .lwi_timeout = time, \
590 .lwi_on_timeout = cb, \
591 .lwi_cb_data = data, \
595 #define LWI_TIMEOUT_INTERVAL(time, interval, cb, data) \
596 ((struct l_wait_info) { \
597 .lwi_timeout = time, \
598 .lwi_on_timeout = cb, \
599 .lwi_cb_data = data, \
600 .lwi_interval = interval \
603 #define LWI_TIMEOUT_INTR(time, time_cb, sig_cb, data) \
604 ((struct l_wait_info) { \
605 .lwi_timeout = time, \
606 .lwi_on_timeout = time_cb, \
607 .lwi_on_signal = sig_cb, \
608 .lwi_cb_data = data, \
612 #define LWI_INTR(cb, data) LWI_TIMEOUT_INTR(0, NULL, cb, data)
617 * wait for @condition to become true, but no longer than timeout, specified
620 #define __l_wait_event(wq, condition, info, ret, excl) \
622 cfs_waitlink_t __wait; \
623 cfs_duration_t __timeout = info->lwi_timeout; \
624 cfs_sigset_t __blocked; \
630 cfs_waitlink_init(&__wait); \
632 cfs_waitq_add_exclusive(&wq, &__wait); \
634 cfs_waitq_add(&wq, &__wait); \
636 /* Block all signals (just the non-fatal ones if no timeout). */ \
637 if (info->lwi_on_signal != NULL && __timeout == 0) \
638 __blocked = l_w_e_set_sigs(LUSTRE_FATAL_SIGS); \
640 __blocked = l_w_e_set_sigs(0); \
643 set_current_state(TASK_INTERRUPTIBLE); \
648 if (__timeout == 0) { \
649 cfs_waitq_wait(&__wait, CFS_TASK_INTERRUPTIBLE); \
651 cfs_duration_t interval = info->lwi_interval? \
652 min_t(cfs_duration_t, \
653 info->lwi_interval,__timeout):\
655 cfs_duration_t remaining = cfs_waitq_timedwait(&__wait,\
656 CFS_TASK_INTERRUPTIBLE, \
658 __timeout = cfs_time_sub(__timeout, \
659 cfs_time_sub(interval, remaining));\
660 if (__timeout == 0) { \
661 if (info->lwi_on_timeout == NULL || \
662 info->lwi_on_timeout(info->lwi_cb_data)) { \
666 /* Take signals after the timeout expires. */ \
667 if (info->lwi_on_signal != NULL) \
668 (void)l_w_e_set_sigs(LUSTRE_FATAL_SIGS); \
674 if (cfs_signal_pending()) { \
675 if (info->lwi_on_signal != NULL && __timeout == 0) { \
676 if (info->lwi_on_signal != LWI_ON_SIGNAL_NOOP) \
677 info->lwi_on_signal(info->lwi_cb_data);\
681 /* We have to do this here because some signals */ \
682 /* are not blockable - ie from strace(1). */ \
683 /* In these cases we want to schedule_timeout() */ \
684 /* again, because we don't want that to return */ \
685 /* -EINTR when the RPC actually succeeded. */ \
686 /* the RECALC_SIGPENDING below will deliver the */ \
687 /* signal properly. */ \
688 cfs_clear_sigpending(); \
692 cfs_block_sigs(__blocked); \
694 set_current_state(TASK_RUNNING); \
695 cfs_waitq_del(&wq, &__wait); \
698 #else /* !__KERNEL__ */
699 #define __l_wait_event(wq, condition, info, ret, excl) \
701 long __timeout = info->lwi_timeout; \
704 int __timed_out = 0; \
705 int __interval = obd_timeout; \
711 if (__timeout != 0) \
712 __then = time(NULL); \
714 if (__timeout && __timeout < __interval) \
715 __interval = __timeout; \
716 if (info->lwi_interval && info->lwi_interval < __interval) \
717 __interval = info->lwi_interval; \
719 while (!(condition)) { \
720 liblustre_wait_event(__interval); \
724 if (!__timed_out && info->lwi_timeout != 0) { \
725 __now = time(NULL); \
726 __timeout -= __now - __then; \
734 if (info->lwi_on_timeout == NULL || \
735 info->lwi_on_timeout(info->lwi_cb_data)) { \
743 #endif /* __KERNEL__ */
745 #define l_wait_event(wq, condition, info) \
748 struct l_wait_info *__info = (info); \
750 __l_wait_event(wq, condition, __info, __ret, 0); \
754 #define l_wait_event_exclusive(wq, condition, info) \
757 struct l_wait_info *__info = (info); \
759 __l_wait_event(wq, condition, __info, __ret, 1); \
764 #define LIBLUSTRE_CLIENT (0)
766 #define LIBLUSTRE_CLIENT (1)
769 #endif /* _LUSTRE_LIB_H */