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 */
47 struct ptlrpc_request;
51 #include <lustre_ha.h>
52 #include <lustre_net.h>
55 void target_client_add_cb(struct obd_device *obd, __u64 transno, void *cb_data,
57 int target_handle_connect(struct ptlrpc_request *req, svc_handler_t handler);
58 int target_handle_disconnect(struct ptlrpc_request *req);
59 void target_destroy_export(struct obd_export *exp);
60 int target_handle_reconnect(struct lustre_handle *conn, struct obd_export *exp,
61 struct obd_uuid *cluuid);
62 int target_handle_ping(struct ptlrpc_request *req);
63 void target_committed_to_req(struct ptlrpc_request *req);
65 #ifdef HAVE_QUOTA_SUPPORT
66 /* quotacheck callback, dqacq/dqrel callback handler */
67 int target_handle_qc_callback(struct ptlrpc_request *req);
68 int target_handle_dqacq_callback(struct ptlrpc_request *req);
70 #define target_handle_dqacq_callback(req) ldlm_callback_reply(req, -ENOTSUPP)
71 #define target_handle_qc_callback(req) (0)
74 void target_cancel_recovery_timer(struct obd_device *obd);
76 #define OBD_RECOVERY_TIMEOUT (obd_timeout * 5 / 2) /* *waves hands* */
77 void target_start_recovery_timer(struct obd_device *obd, svc_handler_t handler);
78 void target_abort_recovery(void *data);
79 void target_cleanup_recovery(struct obd_device *obd);
80 int target_queue_recovery_request(struct ptlrpc_request *req,
81 struct obd_device *obd);
82 int target_queue_final_reply(struct ptlrpc_request *req, int rc);
83 void target_send_reply(struct ptlrpc_request *req, int rc, int fail_id);
87 int client_sanobd_setup(struct obd_device *obddev, obd_count len, void *buf);
88 struct client_obd *client_conn2cli(struct lustre_handle *conn);
91 struct obd_client_handle {
92 struct lustre_handle och_fh;
93 struct llog_cookie och_cookie;
94 struct mdc_open_data *och_mod;
97 #define OBD_CLIENT_HANDLE_MAGIC 0xd15ea5ed
100 void statfs_pack(struct obd_statfs *osfs, struct kstatfs *sfs);
101 void statfs_unpack(struct kstatfs *sfs, struct obd_statfs *osfs);
107 struct semaphore l_sem;
111 void l_lock_init(struct lustre_lock *);
112 void l_lock(struct lustre_lock *);
113 void l_unlock(struct lustre_lock *);
114 int l_has_lock(struct lustre_lock *);
120 #define OBD_IOCTL_VERSION 0x00010004
122 struct obd_ioctl_data {
124 uint32_t ioc_version;
130 struct obdo ioc_obdo1;
131 struct obdo ioc_obdo2;
136 uint32_t ioc_command;
142 /* buffers the kernel will treat as user pointers */
148 /* inline buffers for various arguments */
149 uint32_t ioc_inllen1;
151 uint32_t ioc_inllen2;
153 uint32_t ioc_inllen3;
155 uint32_t ioc_inllen4;
161 struct obd_ioctl_hdr {
163 uint32_t ioc_version;
166 static inline int obd_ioctl_packlen(struct obd_ioctl_data *data)
168 int len = size_round(sizeof(struct obd_ioctl_data));
169 len += size_round(data->ioc_inllen1);
170 len += size_round(data->ioc_inllen2);
171 len += size_round(data->ioc_inllen3);
172 len += size_round(data->ioc_inllen4);
177 static inline int obd_ioctl_is_invalid(struct obd_ioctl_data *data)
179 if (data->ioc_len > (1<<30)) {
180 CERROR("OBD ioctl: ioc_len larger than 1<<30\n");
183 if (data->ioc_inllen1 > (1<<30)) {
184 CERROR("OBD ioctl: ioc_inllen1 larger than 1<<30\n");
187 if (data->ioc_inllen2 > (1<<30)) {
188 CERROR("OBD ioctl: ioc_inllen2 larger than 1<<30\n");
191 if (data->ioc_inllen3 > (1<<30)) {
192 CERROR("OBD ioctl: ioc_inllen3 larger than 1<<30\n");
195 if (data->ioc_inllen4 > (1<<30)) {
196 CERROR("OBD ioctl: ioc_inllen4 larger than 1<<30\n");
199 if (data->ioc_inlbuf1 && !data->ioc_inllen1) {
200 CERROR("OBD ioctl: inlbuf1 pointer but 0 length\n");
203 if (data->ioc_inlbuf2 && !data->ioc_inllen2) {
204 CERROR("OBD ioctl: inlbuf2 pointer but 0 length\n");
207 if (data->ioc_inlbuf3 && !data->ioc_inllen3) {
208 CERROR("OBD ioctl: inlbuf3 pointer but 0 length\n");
211 if (data->ioc_inlbuf4 && !data->ioc_inllen4) {
212 CERROR("OBD ioctl: inlbuf4 pointer but 0 length\n");
215 if (data->ioc_pbuf1 && !data->ioc_plen1) {
216 CERROR("OBD ioctl: pbuf1 pointer but 0 length\n");
219 if (data->ioc_pbuf2 && !data->ioc_plen2) {
220 CERROR("OBD ioctl: pbuf2 pointer but 0 length\n");
223 if (data->ioc_plen1 && !data->ioc_pbuf1) {
224 CERROR("OBD ioctl: plen1 set but NULL pointer\n");
227 if (data->ioc_plen2 && !data->ioc_pbuf2) {
228 CERROR("OBD ioctl: plen2 set but NULL pointer\n");
231 if (obd_ioctl_packlen(data) > data->ioc_len) {
232 CERROR("OBD ioctl: packlen exceeds ioc_len (%d > %d)\n",
233 obd_ioctl_packlen(data), data->ioc_len);
240 static inline int obd_ioctl_pack(struct obd_ioctl_data *data, char **pbuf,
244 struct obd_ioctl_data *overlay;
245 data->ioc_len = obd_ioctl_packlen(data);
246 data->ioc_version = OBD_IOCTL_VERSION;
248 if (*pbuf && data->ioc_len > max)
251 *pbuf = malloc(data->ioc_len);
255 overlay = (struct obd_ioctl_data *)*pbuf;
256 memcpy(*pbuf, data, sizeof(*data));
258 ptr = overlay->ioc_bulk;
259 if (data->ioc_inlbuf1)
260 LOGL(data->ioc_inlbuf1, data->ioc_inllen1, ptr);
261 if (data->ioc_inlbuf2)
262 LOGL(data->ioc_inlbuf2, data->ioc_inllen2, ptr);
263 if (data->ioc_inlbuf3)
264 LOGL(data->ioc_inlbuf3, data->ioc_inllen3, ptr);
265 if (data->ioc_inlbuf4)
266 LOGL(data->ioc_inlbuf4, data->ioc_inllen4, ptr);
267 if (obd_ioctl_is_invalid(overlay))
273 static inline int obd_ioctl_unpack(struct obd_ioctl_data *data, char *pbuf,
277 struct obd_ioctl_data *overlay;
281 overlay = (struct obd_ioctl_data *)pbuf;
283 /* Preserve the caller's buffer pointers */
284 overlay->ioc_inlbuf1 = data->ioc_inlbuf1;
285 overlay->ioc_inlbuf2 = data->ioc_inlbuf2;
286 overlay->ioc_inlbuf3 = data->ioc_inlbuf3;
287 overlay->ioc_inlbuf4 = data->ioc_inlbuf4;
289 memcpy(data, pbuf, sizeof(*data));
291 ptr = overlay->ioc_bulk;
292 if (data->ioc_inlbuf1)
293 LOGU(data->ioc_inlbuf1, data->ioc_inllen1, ptr);
294 if (data->ioc_inlbuf2)
295 LOGU(data->ioc_inlbuf2, data->ioc_inllen2, ptr);
296 if (data->ioc_inlbuf3)
297 LOGU(data->ioc_inlbuf3, data->ioc_inllen3, ptr);
298 if (data->ioc_inlbuf4)
299 LOGU(data->ioc_inlbuf4, data->ioc_inllen4, ptr);
305 #include <obd_support.h>
308 /* function defined in lustre/obdclass/<platform>/<platform>-module.c */
309 int obd_ioctl_getdata(char **buf, int *len, void *arg);
310 int obd_ioctl_popdata(void *arg, void *data, int len);
312 /* buffer MUST be at least the size of obd_ioctl_hdr */
313 static inline int obd_ioctl_getdata(char **buf, int *len, void *arg)
315 struct obd_ioctl_hdr hdr;
316 struct obd_ioctl_data *data;
321 err = copy_from_user(&hdr, (void *)arg, sizeof(hdr));
325 if (hdr.ioc_version != OBD_IOCTL_VERSION) {
326 CERROR("Version mismatch kernel vs application\n");
330 if (hdr.ioc_len > OBD_MAX_IOCTL_BUFFER) {
331 CERROR("User buffer len %d exceeds %d max buffer\n",
332 hdr.ioc_len, OBD_MAX_IOCTL_BUFFER);
336 if (hdr.ioc_len < sizeof(struct obd_ioctl_data)) {
337 CERROR("User buffer too small for ioctl (%d)\n", hdr.ioc_len);
341 /* XXX allocate this more intelligently, using kmalloc when
343 OBD_VMALLOC(*buf, hdr.ioc_len);
345 CERROR("Cannot allocate control buffer of len %d\n",
350 data = (struct obd_ioctl_data *)*buf;
352 err = copy_from_user(*buf, (void *)arg, hdr.ioc_len);
354 OBD_VFREE(*buf, hdr.ioc_len);
358 if (obd_ioctl_is_invalid(data)) {
359 CERROR("ioctl not correctly formatted\n");
360 OBD_VFREE(*buf, hdr.ioc_len);
364 if (data->ioc_inllen1) {
365 data->ioc_inlbuf1 = &data->ioc_bulk[0];
366 offset += size_round(data->ioc_inllen1);
369 if (data->ioc_inllen2) {
370 data->ioc_inlbuf2 = &data->ioc_bulk[0] + offset;
371 offset += size_round(data->ioc_inllen2);
374 if (data->ioc_inllen3) {
375 data->ioc_inlbuf3 = &data->ioc_bulk[0] + offset;
376 offset += size_round(data->ioc_inllen3);
379 if (data->ioc_inllen4) {
380 data->ioc_inlbuf4 = &data->ioc_bulk[0] + offset;
386 static inline int obd_ioctl_popdata(void *arg, void *data, int len)
388 int err = copy_to_user(arg, data, len);
395 static inline void obd_ioctl_freedata(char *buf, int len)
405 * BSD ioctl description:
406 * #define IOC_V1 _IOR(g, n1, long)
407 * #define IOC_V2 _IOW(g, n2, long)
409 * ioctl(f, IOC_V1, arg);
410 * arg will be treated as a long value,
412 * ioctl(f, IOC_V2, arg)
413 * arg will be treated as a pointer, bsd will call
414 * copyin(buf, arg, sizeof(long))
416 * To make BSD ioctl handles argument correctly and simplely,
417 * we change _IOR to _IOWR so BSD will copyin obd_ioctl_data
418 * for us. Does this change affect Linux? (XXX Liang)
420 #define OBD_IOC_CREATE _IOWR('f', 101, OBD_IOC_DATA_TYPE)
421 #define OBD_IOC_DESTROY _IOW ('f', 104, OBD_IOC_DATA_TYPE)
422 #define OBD_IOC_PREALLOCATE _IOWR('f', 105, OBD_IOC_DATA_TYPE)
424 #define OBD_IOC_SETATTR _IOW ('f', 107, OBD_IOC_DATA_TYPE)
425 #define OBD_IOC_GETATTR _IOWR ('f', 108, OBD_IOC_DATA_TYPE)
426 #define OBD_IOC_READ _IOWR('f', 109, OBD_IOC_DATA_TYPE)
427 #define OBD_IOC_WRITE _IOWR('f', 110, OBD_IOC_DATA_TYPE)
430 #define OBD_IOC_STATFS _IOWR('f', 113, OBD_IOC_DATA_TYPE)
431 #define OBD_IOC_SYNC _IOW ('f', 114, OBD_IOC_DATA_TYPE)
432 #define OBD_IOC_READ2 _IOWR('f', 115, OBD_IOC_DATA_TYPE)
433 #define OBD_IOC_FORMAT _IOWR('f', 116, OBD_IOC_DATA_TYPE)
434 #define OBD_IOC_PARTITION _IOWR('f', 117, OBD_IOC_DATA_TYPE)
435 #define OBD_IOC_COPY _IOWR('f', 120, OBD_IOC_DATA_TYPE)
436 #define OBD_IOC_MIGR _IOWR('f', 121, OBD_IOC_DATA_TYPE)
437 #define OBD_IOC_PUNCH _IOWR('f', 122, OBD_IOC_DATA_TYPE)
439 #define OBD_IOC_MODULE_DEBUG _IOWR('f', 124, OBD_IOC_DATA_TYPE)
440 #define OBD_IOC_BRW_READ _IOWR('f', 125, OBD_IOC_DATA_TYPE)
441 #define OBD_IOC_BRW_WRITE _IOWR('f', 126, OBD_IOC_DATA_TYPE)
442 #define OBD_IOC_NAME2DEV _IOWR('f', 127, OBD_IOC_DATA_TYPE)
443 #define OBD_IOC_UUID2DEV _IOWR('f', 130, OBD_IOC_DATA_TYPE)
444 #define OBD_IOC_GETNAME _IOWR('f', 131, OBD_IOC_DATA_TYPE)
446 #define OBD_IOC_LOV_GET_CONFIG _IOWR('f', 132, OBD_IOC_DATA_TYPE)
447 #define OBD_IOC_CLIENT_RECOVER _IOW ('f', 133, OBD_IOC_DATA_TYPE)
449 #define OBD_IOC_DEC_FS_USE_COUNT _IO ('f', 139 )
450 #define OBD_IOC_NO_TRANSNO _IOW ('f', 140, OBD_IOC_DATA_TYPE)
451 #define OBD_IOC_SET_READONLY _IOW ('f', 141, OBD_IOC_DATA_TYPE)
452 #define OBD_IOC_ABORT_RECOVERY _IOR ('f', 142, OBD_IOC_DATA_TYPE)
454 #define OBD_GET_VERSION _IOWR ('f', 144, OBD_IOC_DATA_TYPE)
456 #define OBD_IOC_CLOSE_UUID _IOWR ('f', 147, OBD_IOC_DATA_TYPE)
458 #define OBD_IOC_GETDEVICE _IOWR ('f', 149, OBD_IOC_DATA_TYPE)
460 #define OBD_IOC_LOV_SETSTRIPE _IOW ('f', 154, OBD_IOC_DATA_TYPE)
461 #define OBD_IOC_LOV_GETSTRIPE _IOW ('f', 155, OBD_IOC_DATA_TYPE)
462 #define OBD_IOC_LOV_SETEA _IOW ('f', 156, OBD_IOC_DATA_TYPE)
464 #define OBD_IOC_QUOTACHECK _IOW ('f', 160, int)
465 #define OBD_IOC_POLL_QUOTACHECK _IOR ('f', 161, struct if_quotacheck *)
466 #define OBD_IOC_QUOTACTL _IOWR('f', 162, struct if_quotactl *)
468 #define OBD_IOC_MOUNTOPT _IOWR('f', 170, OBD_IOC_DATA_TYPE)
470 #define OBD_IOC_RECORD _IOWR('f', 180, OBD_IOC_DATA_TYPE)
471 #define OBD_IOC_ENDRECORD _IOWR('f', 181, OBD_IOC_DATA_TYPE)
472 #define OBD_IOC_PARSE _IOWR('f', 182, OBD_IOC_DATA_TYPE)
473 #define OBD_IOC_DORECORD _IOWR('f', 183, OBD_IOC_DATA_TYPE)
474 #define OBD_IOC_PROCESS_CFG _IOWR('f', 184, OBD_IOC_DATA_TYPE)
475 #define OBD_IOC_DUMP_LOG _IOWR('f', 185, OBD_IOC_DATA_TYPE)
476 #define OBD_IOC_CLEAR_LOG _IOWR('f', 186, OBD_IOC_DATA_TYPE)
477 #define OBD_IOC_PARAM _IOW ('f', 187, OBD_IOC_DATA_TYPE)
479 #define OBD_IOC_CATLOGLIST _IOWR('f', 190, OBD_IOC_DATA_TYPE)
480 #define OBD_IOC_LLOG_INFO _IOWR('f', 191, OBD_IOC_DATA_TYPE)
481 #define OBD_IOC_LLOG_PRINT _IOWR('f', 192, OBD_IOC_DATA_TYPE)
482 #define OBD_IOC_LLOG_CANCEL _IOWR('f', 193, OBD_IOC_DATA_TYPE)
483 #define OBD_IOC_LLOG_REMOVE _IOWR('f', 194, OBD_IOC_DATA_TYPE)
484 #define OBD_IOC_LLOG_CHECK _IOWR('f', 195, OBD_IOC_DATA_TYPE)
485 #define OBD_IOC_LLOG_CATINFO _IOWR('f', 196, OBD_IOC_DATA_TYPE)
487 #define ECHO_IOC_GET_STRIPE _IOWR('f', 200, OBD_IOC_DATA_TYPE)
488 #define ECHO_IOC_SET_STRIPE _IOWR('f', 201, OBD_IOC_DATA_TYPE)
489 #define ECHO_IOC_ENQUEUE _IOWR('f', 202, OBD_IOC_DATA_TYPE)
490 #define ECHO_IOC_CANCEL _IOWR('f', 203, OBD_IOC_DATA_TYPE)
492 /* XXX _IOWR('f', 250, long) has been defined in
493 * lnet/include/libcfs/kp30.h for debug, don't use it
496 /* Until such time as we get_info the per-stripe maximum from the OST,
497 * we define this to be 2T - 4k, which is the ext3 maxbytes. */
498 #define LUSTRE_STRIPE_MAXBYTES 0x1fffffff000ULL
500 /* #define POISON_BULK 0 */
503 * l_wait_event is a flexible sleeping function, permitting simple caller
504 * configuration of interrupt and timeout sensitivity along with actions to
505 * be performed in the event of either exception.
507 * The first form of usage looks like this:
509 * struct l_wait_info lwi = LWI_TIMEOUT_INTR(timeout, timeout_handler,
510 * intr_handler, callback_data);
511 * rc = l_wait_event(waitq, condition, &lwi);
513 * l_wait_event() makes the current process wait on 'waitq' until 'condition'
514 * is TRUE or a "killable" signal (SIGTERM, SIKGILL, SIGINT) is pending. It
515 * returns 0 to signify 'condition' is TRUE, but if a signal wakes it before
516 * 'condition' becomes true, it optionally calls the specified 'intr_handler'
517 * if not NULL, and returns -EINTR.
519 * If a non-zero timeout is specified, signals are ignored until the timeout
520 * has expired. At this time, if 'timeout_handler' is not NULL it is called.
521 * If it returns FALSE l_wait_event() continues to wait as described above with
522 * signals enabled. Otherwise it returns -ETIMEDOUT.
524 * LWI_INTR(intr_handler, callback_data) is shorthand for
525 * LWI_TIMEOUT_INTR(0, NULL, intr_handler, callback_data)
527 * The second form of usage looks like this:
529 * struct l_wait_info lwi = LWI_TIMEOUT(timeout, timeout_handler);
530 * rc = l_wait_event(waitq, condition, &lwi);
532 * This form is the same as the first except that it COMPLETELY IGNORES
533 * SIGNALS. The caller must therefore beware that if 'timeout' is zero, or if
534 * 'timeout_handler' is not NULL and returns FALSE, then the ONLY thing that
535 * can unblock the current process is 'condition' becoming TRUE.
537 * Another form of usage is:
538 * struct l_wait_info lwi = LWI_TIMEOUT_INTERVAL(timeout, interval,
540 * rc = l_wait_event(waitq, condition, &lwi);
541 * This is the same as previous case, but condition is checked once every
542 * 'interval' jiffies (if non-zero).
544 * Subtle synchronization point: this macro does *not* necessary takes
545 * wait-queue spin-lock before returning, and, hence, following idiom is safe
546 * ONLY when caller provides some external locking:
550 * l_wait_event(&obj->wq, ....); (1)
552 * wake_up(&obj->wq): (2)
553 * spin_lock(&q->lock); (2.1)
554 * __wake_up_common(q, ...); (2.2)
555 * spin_unlock(&q->lock, flags); (2.3)
557 * OBD_FREE_PTR(obj); (3)
559 * As l_wait_event() may "short-cut" execution and return without taking
560 * wait-queue spin-lock, some additional synchronization is necessary to
561 * guarantee that step (3) can begin only after (2.3) finishes.
563 * XXX nikita: some ptlrpc daemon threads have races of that sort.
567 #define LWI_ON_SIGNAL_NOOP ((void (*)(void *))(-1))
570 cfs_duration_t lwi_timeout;
571 cfs_duration_t lwi_interval;
572 int (*lwi_on_timeout)(void *);
573 void (*lwi_on_signal)(void *);
577 /* NB: LWI_TIMEOUT ignores signals completely */
578 #define LWI_TIMEOUT(time, cb, data) \
579 ((struct l_wait_info) { \
580 .lwi_timeout = time, \
581 .lwi_on_timeout = cb, \
582 .lwi_cb_data = data, \
586 #define LWI_TIMEOUT_INTERVAL(time, interval, cb, data) \
587 ((struct l_wait_info) { \
588 .lwi_timeout = time, \
589 .lwi_on_timeout = cb, \
590 .lwi_cb_data = data, \
591 .lwi_interval = interval \
594 #define LWI_TIMEOUT_INTR(time, time_cb, sig_cb, data) \
595 ((struct l_wait_info) { \
596 .lwi_timeout = time, \
597 .lwi_on_timeout = time_cb, \
598 .lwi_on_signal = sig_cb, \
599 .lwi_cb_data = data, \
603 #define LWI_INTR(cb, data) LWI_TIMEOUT_INTR(0, NULL, cb, data)
608 * wait for @condition to become true, but no longer than timeout, specified
611 #define __l_wait_event(wq, condition, info, ret, excl) \
613 cfs_waitlink_t __wait; \
614 cfs_duration_t __timeout = info->lwi_timeout; \
615 cfs_sigset_t __blocked; \
621 cfs_waitlink_init(&__wait); \
623 cfs_waitq_add_exclusive(&wq, &__wait); \
625 cfs_waitq_add(&wq, &__wait); \
627 /* Block all signals (just the non-fatal ones if no timeout). */ \
628 if (info->lwi_on_signal != NULL && __timeout == 0) \
629 __blocked = l_w_e_set_sigs(LUSTRE_FATAL_SIGS); \
631 __blocked = l_w_e_set_sigs(0); \
634 set_current_state(TASK_INTERRUPTIBLE); \
639 if (__timeout == 0) { \
640 cfs_waitq_wait(&__wait, CFS_TASK_INTERRUPTIBLE); \
642 cfs_duration_t interval = info->lwi_interval? \
643 min_t(cfs_duration_t, \
644 info->lwi_interval,__timeout):\
646 cfs_duration_t remaining = cfs_waitq_timedwait(&__wait,\
647 CFS_TASK_INTERRUPTIBLE, \
649 __timeout = cfs_time_sub(__timeout, \
650 cfs_time_sub(interval, remaining));\
651 if (__timeout == 0) { \
652 if (info->lwi_on_timeout == NULL || \
653 info->lwi_on_timeout(info->lwi_cb_data)) { \
657 /* Take signals after the timeout expires. */ \
658 if (info->lwi_on_signal != NULL) \
659 (void)l_w_e_set_sigs(LUSTRE_FATAL_SIGS); \
665 if (cfs_signal_pending()) { \
666 if (info->lwi_on_signal != NULL && __timeout == 0) { \
667 if (info->lwi_on_signal != LWI_ON_SIGNAL_NOOP) \
668 info->lwi_on_signal(info->lwi_cb_data);\
672 /* We have to do this here because some signals */ \
673 /* are not blockable - ie from strace(1). */ \
674 /* In these cases we want to schedule_timeout() */ \
675 /* again, because we don't want that to return */ \
676 /* -EINTR when the RPC actually succeeded. */ \
677 /* the RECALC_SIGPENDING below will deliver the */ \
678 /* signal properly. */ \
679 cfs_clear_sigpending(); \
683 cfs_block_sigs(__blocked); \
685 set_current_state(TASK_RUNNING); \
686 cfs_waitq_del(&wq, &__wait); \
689 #else /* !__KERNEL__ */
690 #define __l_wait_event(wq, condition, info, ret, excl) \
692 long __timeout = info->lwi_timeout; \
695 int __timed_out = 0; \
696 int __interval = obd_timeout; \
702 if (__timeout != 0) \
703 __then = time(NULL); \
705 if (__timeout && __timeout < __interval) \
706 __interval = __timeout; \
707 if (info->lwi_interval && info->lwi_interval < __interval) \
708 __interval = info->lwi_interval; \
710 while (!(condition)) { \
711 liblustre_wait_event(__interval); \
715 if (!__timed_out && info->lwi_timeout != 0) { \
716 __now = time(NULL); \
717 __timeout -= __now - __then; \
725 if (info->lwi_on_timeout == NULL || \
726 info->lwi_on_timeout(info->lwi_cb_data)) { \
734 #endif /* __KERNEL__ */
736 #define l_wait_event(wq, condition, info) \
739 struct l_wait_info *__info = (info); \
741 __l_wait_event(wq, condition, __info, __ret, 0); \
745 #define l_wait_event_exclusive(wq, condition, info) \
748 struct l_wait_info *__info = (info); \
750 __l_wait_event(wq, condition, __info, __ret, 1); \
755 #define LIBLUSTRE_CLIENT (0)
757 #define LIBLUSTRE_CLIENT (1)
760 #endif /* _LUSTRE_LIB_H */