4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 only,
8 * as published by the Free Software Foundation.
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License version 2 for more details (a copy is included
14 * in the LICENSE file that accompanied this code).
16 * You should have received a copy of the GNU General Public License
17 * version 2 along with this program; If not, see
18 * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
20 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
21 * CA 95054 USA or visit www.sun.com if you need additional information or
27 * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
28 * Use is subject to license terms.
31 * This file is part of Lustre, http://www.lustre.org/
32 * Lustre is a trademark of Sun Microsystems, Inc.
34 * lustre/obdclass/llog_lvfs.c
36 * OST<->MDS recovery logging infrastructure.
37 * Invariants in implementation:
38 * - we do not share logs among different OST<->MDS connections, so that
39 * if an OST or MDS fails it need only look at log(s) relevant to itself
41 * Author: Andreas Dilger <adilger@clusterfs.com>
44 #define DEBUG_SUBSYSTEM S_LOG
51 #include <liblustre.h>
55 #include <obd_class.h>
56 #include <lustre_log.h>
58 #include <libcfs/list.h>
60 #include <lustre_fsfilt.h>
61 #include <lustre_disk.h>
62 #include "llog_internal.h"
64 #if defined(__KERNEL__) && defined(LLOG_LVFS)
66 static int llog_lvfs_pad(struct obd_device *obd, struct l_file *file,
69 struct llog_rec_hdr rec = { 0 };
70 struct llog_rec_tail tail;
74 LASSERT(len >= LLOG_MIN_REC_SIZE && (len & 0x7) == 0);
76 tail.lrt_len = rec.lrh_len = len;
77 tail.lrt_index = rec.lrh_index = index;
78 rec.lrh_type = LLOG_PAD_MAGIC;
80 rc = fsfilt_write_record(obd, file, &rec, sizeof(rec), &file->f_pos, 0);
82 CERROR("error writing padding record: rc %d\n", rc);
86 file->f_pos += len - sizeof(rec) - sizeof(tail);
87 rc = fsfilt_write_record(obd, file, &tail, sizeof(tail),&file->f_pos,0);
89 CERROR("error writing padding record: rc %d\n", rc);
97 static int llog_lvfs_write_blob(struct obd_device *obd, struct l_file *file,
98 struct llog_rec_hdr *rec, void *buf, loff_t off)
101 struct llog_rec_tail end;
102 loff_t saved_off = file->f_pos;
103 int buflen = rec->lrh_len;
110 CWARN("0-length record\n");
113 rc = fsfilt_write_record(obd, file, rec, buflen,&file->f_pos,0);
115 CERROR("error writing log record: rc %d\n", rc);
122 rec->lrh_len = sizeof(*rec) + buflen + sizeof(end);
123 rc = fsfilt_write_record(obd, file, rec, sizeof(*rec), &file->f_pos, 0);
125 CERROR("error writing log hdr: rc %d\n", rc);
129 rc = fsfilt_write_record(obd, file, buf, buflen, &file->f_pos, 0);
131 CERROR("error writing log buffer: rc %d\n", rc);
135 end.lrt_len = rec->lrh_len;
136 end.lrt_index = rec->lrh_index;
137 rc = fsfilt_write_record(obd, file, &end, sizeof(end), &file->f_pos, 0);
139 CERROR("error writing log tail: rc %d\n", rc);
145 if (saved_off > file->f_pos)
146 file->f_pos = saved_off;
151 static int llog_lvfs_read_blob(struct obd_device *obd, struct l_file *file,
152 void *buf, int size, loff_t off)
158 rc = fsfilt_read_record(obd, file, buf, size, &offset);
160 CERROR("error reading log record: rc %d\n", rc);
166 static int llog_lvfs_read_header(struct llog_handle *handle)
168 struct obd_device *obd;
172 LASSERT(sizeof(*handle->lgh_hdr) == LLOG_CHUNK_SIZE);
174 obd = handle->lgh_ctxt->loc_exp->exp_obd;
176 if (i_size_read(handle->lgh_file->f_dentry->d_inode) == 0) {
177 CDEBUG(D_HA, "not reading header from 0-byte log\n");
181 rc = llog_lvfs_read_blob(obd, handle->lgh_file, handle->lgh_hdr,
184 CERROR("error reading log header from %.*s\n",
185 handle->lgh_file->f_dentry->d_name.len,
186 handle->lgh_file->f_dentry->d_name.name);
188 struct llog_rec_hdr *llh_hdr = &handle->lgh_hdr->llh_hdr;
190 if (LLOG_REC_HDR_NEEDS_SWABBING(llh_hdr))
191 lustre_swab_llog_hdr(handle->lgh_hdr);
193 if (llh_hdr->lrh_type != LLOG_HDR_MAGIC) {
194 CERROR("bad log %.*s header magic: %#x (expected %#x)\n",
195 handle->lgh_file->f_dentry->d_name.len,
196 handle->lgh_file->f_dentry->d_name.name,
197 llh_hdr->lrh_type, LLOG_HDR_MAGIC);
199 } else if (llh_hdr->lrh_len != LLOG_CHUNK_SIZE) {
200 CERROR("incorrectly sized log %.*s header: %#x "
202 handle->lgh_file->f_dentry->d_name.len,
203 handle->lgh_file->f_dentry->d_name.name,
204 llh_hdr->lrh_len, LLOG_CHUNK_SIZE);
205 CERROR("you may need to re-run lconf --write_conf.\n");
210 handle->lgh_last_idx = handle->lgh_hdr->llh_tail.lrt_index;
211 handle->lgh_file->f_pos = i_size_read(handle->lgh_file->f_dentry->d_inode);
216 /* returns negative in on error; 0 if success && reccookie == 0; 1 otherwise */
217 /* appends if idx == -1, otherwise overwrites record idx. */
218 static int llog_lvfs_write_rec(struct llog_handle *loghandle,
219 struct llog_rec_hdr *rec,
220 struct llog_cookie *reccookie, int cookiecount,
223 struct llog_log_hdr *llh;
224 int reclen = rec->lrh_len, index, rc;
225 struct llog_rec_tail *lrt;
226 struct obd_device *obd;
231 llh = loghandle->lgh_hdr;
232 file = loghandle->lgh_file;
233 obd = loghandle->lgh_ctxt->loc_exp->exp_obd;
235 /* record length should not bigger than LLOG_CHUNK_SIZE */
237 rc = (reclen > LLOG_CHUNK_SIZE - sizeof(struct llog_rec_hdr) -
238 sizeof(struct llog_rec_tail)) ? -E2BIG : 0;
240 rc = (reclen > LLOG_CHUNK_SIZE) ? -E2BIG : 0;
245 /* write_blob adds header and tail to lrh_len. */
246 reclen = sizeof(*rec) + rec->lrh_len +
247 sizeof(struct llog_rec_tail);
252 /* no header: only allowed to insert record 1 */
253 if (idx != 1 && !i_size_read(file->f_dentry->d_inode)) {
254 CERROR("idx != -1 in empty log\n");
258 if (idx && llh->llh_size && llh->llh_size != rec->lrh_len)
261 if (!ext2_test_bit(idx, llh->llh_bitmap))
262 CERROR("Modify unset record %u\n", idx);
263 if (idx != rec->lrh_index)
264 CERROR("Index mismatch %d %u\n", idx, rec->lrh_index);
266 rc = llog_lvfs_write_blob(obd, file, &llh->llh_hdr, NULL, 0);
267 /* we are done if we only write the header or on error */
271 /* Assumes constant lrh_len */
272 saved_offset = sizeof(*llh) + (idx - 1) * reclen;
275 struct llog_rec_hdr check;
277 /* We assume that caller has set lgh_cur_* */
278 saved_offset = loghandle->lgh_cur_offset;
280 "modify record "LPX64": idx:%d/%u/%d, len:%u "
282 loghandle->lgh_id.lgl_oid, idx, rec->lrh_index,
283 loghandle->lgh_cur_idx, rec->lrh_len,
284 (long long)(saved_offset - sizeof(*llh)));
285 if (rec->lrh_index != loghandle->lgh_cur_idx) {
286 CERROR("modify idx mismatch %u/%d\n",
287 idx, loghandle->lgh_cur_idx);
290 #if 1 /* FIXME remove this safety check at some point */
291 /* Verify that the record we're modifying is the
293 rc = llog_lvfs_read_blob(obd, file, &check,
294 sizeof(check), saved_offset);
295 if (check.lrh_index != idx || check.lrh_len != reclen) {
296 CERROR("Bad modify idx %u/%u size %u/%u (%d)\n",
297 idx, check.lrh_index, reclen,
304 rc = llog_lvfs_write_blob(obd, file, rec, buf, saved_offset);
305 if (rc == 0 && reccookie) {
306 reccookie->lgc_lgl = loghandle->lgh_id;
307 reccookie->lgc_index = idx;
313 /* Make sure that records don't cross a chunk boundary, so we can
314 * process them page-at-a-time if needed. If it will cross a chunk
315 * boundary, write in a fake (but referenced) entry to pad the chunk.
317 * We know that llog_current_log() will return a loghandle that is
318 * big enough to hold reclen, so all we care about is padding here.
320 left = LLOG_CHUNK_SIZE - (file->f_pos & (LLOG_CHUNK_SIZE - 1));
322 /* NOTE: padding is a record, but no bit is set */
323 if (left != 0 && left != reclen &&
324 left < (reclen + LLOG_MIN_REC_SIZE)) {
325 index = loghandle->lgh_last_idx + 1;
326 rc = llog_lvfs_pad(obd, file, left, index);
329 loghandle->lgh_last_idx++; /*for pad rec*/
331 /* if it's the last idx in log file, then return -ENOSPC */
332 if (loghandle->lgh_last_idx >= LLOG_BITMAP_SIZE(llh) - 1)
334 loghandle->lgh_last_idx++;
335 index = loghandle->lgh_last_idx;
336 LASSERT(index < LLOG_BITMAP_SIZE(llh));
337 rec->lrh_index = index;
339 lrt = (struct llog_rec_tail *)
340 ((char *)rec + rec->lrh_len - sizeof(*lrt));
341 lrt->lrt_len = rec->lrh_len;
342 lrt->lrt_index = rec->lrh_index;
344 /*The caller should make sure only 1 process access the lgh_last_idx,
345 *Otherwise it might hit the assert.*/
346 LASSERT(index < LLOG_BITMAP_SIZE(llh));
347 if (ext2_set_bit(index, llh->llh_bitmap)) {
348 CERROR("argh, index %u already set in log bitmap?\n", index);
349 LBUG(); /* should never happen */
352 llh->llh_tail.lrt_index = index;
354 rc = llog_lvfs_write_blob(obd, file, &llh->llh_hdr, NULL, 0);
358 rc = llog_lvfs_write_blob(obd, file, rec, buf, file->f_pos);
362 CDEBUG(D_RPCTRACE, "added record "LPX64": idx: %u, %u \n",
363 loghandle->lgh_id.lgl_oid, index, rec->lrh_len);
364 if (rc == 0 && reccookie) {
365 reccookie->lgc_lgl = loghandle->lgh_id;
366 reccookie->lgc_index = index;
367 if ((rec->lrh_type == MDS_UNLINK_REC) ||
368 (rec->lrh_type == MDS_SETATTR_REC) ||
369 (rec->lrh_type == MDS_SETATTR64_REC))
370 reccookie->lgc_subsys = LLOG_MDS_OST_ORIG_CTXT;
371 else if (rec->lrh_type == OST_SZ_REC)
372 reccookie->lgc_subsys = LLOG_SIZE_ORIG_CTXT;
373 else if (rec->lrh_type == OST_RAID1_REC)
374 reccookie->lgc_subsys = LLOG_RD1_ORIG_CTXT;
376 reccookie->lgc_subsys = -1;
379 if (rc == 0 && rec->lrh_type == LLOG_GEN_REC)
385 /* We can skip reading at least as many log blocks as the number of
386 * minimum sized log records we are skipping. If it turns out
387 * that we are not far enough along the log (because the
388 * actual records are larger than minimum size) we just skip
389 * some more records. */
391 static void llog_skip_over(__u64 *off, int curr, int goal)
395 *off = (*off + (goal-curr-1) * LLOG_MIN_REC_SIZE) &
396 ~(LLOG_CHUNK_SIZE - 1);
401 * - cur_offset to the furthest point read in the log file
402 * - cur_idx to the log index preceeding cur_offset
403 * returns -EIO/-EINVAL on error
405 static int llog_lvfs_next_block(struct llog_handle *loghandle, int *cur_idx,
406 int next_idx, __u64 *cur_offset, void *buf,
412 if (len == 0 || len & (LLOG_CHUNK_SIZE - 1))
415 CDEBUG(D_OTHER, "looking for log index %u (cur idx %u off "LPU64")\n",
416 next_idx, *cur_idx, *cur_offset);
418 while (*cur_offset < i_size_read(loghandle->lgh_file->f_dentry->d_inode)) {
419 struct llog_rec_hdr *rec;
420 struct llog_rec_tail *tail;
423 llog_skip_over(cur_offset, *cur_idx, next_idx);
426 rc = fsfilt_read_record(loghandle->lgh_ctxt->loc_exp->exp_obd,
427 loghandle->lgh_file, buf, len,
430 CERROR("Cant read llog block at log id "LPU64
431 "/%u offset "LPU64"\n",
432 loghandle->lgh_id.lgl_oid,
433 loghandle->lgh_id.lgl_ogen,
438 /* put number of bytes read into rc to make code simpler */
439 rc = ppos - *cur_offset;
443 /* signal the end of the valid buffer to llog_process */
444 memset(buf + rc, 0, len - rc);
447 if (rc == 0) /* end of file, nothing to do */
450 if (rc < sizeof(*tail)) {
451 CERROR("Invalid llog block at log id "LPU64"/%u offset "
452 LPU64"\n", loghandle->lgh_id.lgl_oid,
453 loghandle->lgh_id.lgl_ogen, *cur_offset);
458 tail = (struct llog_rec_tail *)((char *)buf + rc -
459 sizeof(struct llog_rec_tail));
461 if (LLOG_REC_HDR_NEEDS_SWABBING(rec)) {
462 lustre_swab_llog_rec(rec, tail);
465 *cur_idx = tail->lrt_index;
467 /* this shouldn't happen */
468 if (tail->lrt_index == 0) {
469 CERROR("Invalid llog tail at log id "LPU64"/%u offset "
470 LPU64"\n", loghandle->lgh_id.lgl_oid,
471 loghandle->lgh_id.lgl_ogen, *cur_offset);
474 if (tail->lrt_index < next_idx)
477 /* sanity check that the start of the new buffer is no farther
478 * than the record that we wanted. This shouldn't happen. */
479 if (rec->lrh_index > next_idx) {
480 CERROR("missed desired record? %u > %u\n",
481 rec->lrh_index, next_idx);
489 static int llog_lvfs_prev_block(struct llog_handle *loghandle,
490 int prev_idx, void *buf, int len)
496 if (len == 0 || len & (LLOG_CHUNK_SIZE - 1))
499 CDEBUG(D_OTHER, "looking for log index %u\n", prev_idx);
501 cur_offset = LLOG_CHUNK_SIZE;
502 llog_skip_over(&cur_offset, 0, prev_idx);
504 while (cur_offset < i_size_read(loghandle->lgh_file->f_dentry->d_inode)) {
505 struct llog_rec_hdr *rec;
506 struct llog_rec_tail *tail;
511 rc = fsfilt_read_record(loghandle->lgh_ctxt->loc_exp->exp_obd,
512 loghandle->lgh_file, buf, len,
515 CERROR("Cant read llog block at log id "LPU64
516 "/%u offset "LPU64"\n",
517 loghandle->lgh_id.lgl_oid,
518 loghandle->lgh_id.lgl_ogen,
523 /* put number of bytes read into rc to make code simpler */
524 rc = ppos - cur_offset;
527 if (rc == 0) /* end of file, nothing to do */
530 if (rc < sizeof(*tail)) {
531 CERROR("Invalid llog block at log id "LPU64"/%u offset "
532 LPU64"\n", loghandle->lgh_id.lgl_oid,
533 loghandle->lgh_id.lgl_ogen, cur_offset);
537 tail = buf + rc - sizeof(struct llog_rec_tail);
539 /* this shouldn't happen */
540 if (tail->lrt_index == 0) {
541 CERROR("Invalid llog tail at log id "LPU64"/%u offset "
542 LPU64"\n", loghandle->lgh_id.lgl_oid,
543 loghandle->lgh_id.lgl_ogen, cur_offset);
546 if (le32_to_cpu(tail->lrt_index) < prev_idx)
549 /* sanity check that the start of the new buffer is no farther
550 * than the record that we wanted. This shouldn't happen. */
552 if (le32_to_cpu(rec->lrh_index) > prev_idx) {
553 CERROR("missed desired record? %u > %u\n",
554 le32_to_cpu(rec->lrh_index), prev_idx);
562 static struct file *llog_filp_open(char *dir, char *name, int flags, int mode)
568 OBD_ALLOC(logname, PATH_MAX);
570 return ERR_PTR(-ENOMEM);
572 len = snprintf(logname, PATH_MAX, "%s/%s", dir, name);
573 if (len >= PATH_MAX - 1) {
574 filp = ERR_PTR(-ENAMETOOLONG);
576 filp = l_filp_open(logname, flags, mode);
578 CERROR("logfile creation %s: %ld\n", logname,
581 OBD_FREE(logname, PATH_MAX);
585 /* This is a callback from the llog_* functions.
586 * Assumes caller has already pushed us into the kernel context. */
587 static int llog_lvfs_create(struct llog_ctxt *ctxt, struct llog_handle **res,
588 struct llog_logid *logid, char *name)
590 struct llog_handle *handle;
591 struct obd_device *obd;
592 struct l_dentry *dchild = NULL;
593 struct obdo *oa = NULL;
595 int open_flags = O_RDWR | O_CREAT | O_LARGEFILE;
598 handle = llog_alloc_handle();
604 LASSERT(ctxt->loc_exp);
605 obd = ctxt->loc_exp->exp_obd;
608 dchild = obd_lvfs_fid2dentry(ctxt->loc_exp, logid->lgl_oid,
609 logid->lgl_ogen, logid->lgl_oseq);
611 if (IS_ERR(dchild)) {
612 rc = PTR_ERR(dchild);
613 CERROR("error looking up logfile "LPX64":0x%x: rc %d\n",
614 logid->lgl_oid, logid->lgl_ogen, rc);
618 if (dchild->d_inode == NULL) {
621 CERROR("nonexistent log file "LPX64":"LPX64": rc %d\n",
622 logid->lgl_oid, logid->lgl_oseq, rc);
626 /* l_dentry_open will call dput(dchild) if there is an error */
627 handle->lgh_file = l_dentry_open(&obd->obd_lvfs_ctxt, dchild,
628 O_RDWR | O_LARGEFILE);
629 if (IS_ERR(handle->lgh_file)) {
630 rc = PTR_ERR(handle->lgh_file);
631 CERROR("error opening logfile "LPX64"0x%x: rc %d\n",
632 logid->lgl_oid, logid->lgl_ogen, rc);
636 /* assign the value of lgh_id for handle directly */
637 handle->lgh_id = *logid;
640 handle->lgh_file = llog_filp_open(MOUNT_CONFIGS_DIR,
641 name, open_flags, 0644);
642 if (IS_ERR(handle->lgh_file))
643 GOTO(out, rc = PTR_ERR(handle->lgh_file));
645 handle->lgh_id.lgl_oseq = 1;
646 handle->lgh_id.lgl_oid =
647 handle->lgh_file->f_dentry->d_inode->i_ino;
648 handle->lgh_id.lgl_ogen =
649 handle->lgh_file->f_dentry->d_inode->i_generation;
653 GOTO(out, rc = -ENOMEM);
655 oa->o_seq = FID_SEQ_LLOG;
656 oa->o_valid = OBD_MD_FLGENER | OBD_MD_FLGROUP;
658 rc = obd_create(NULL, ctxt->loc_exp, oa, NULL, NULL);
662 /* FIXME: rationalize the misuse of o_generation in
663 * this API along with mds_obd_{create,destroy}.
664 * Hopefully it is only an internal API issue. */
665 #define o_generation o_parent_oid
666 dchild = obd_lvfs_fid2dentry(ctxt->loc_exp, oa->o_id,
667 oa->o_generation, oa->o_seq);
670 GOTO(out, rc = PTR_ERR(dchild));
672 handle->lgh_file = l_dentry_open(&obd->obd_lvfs_ctxt, dchild,
674 if (IS_ERR(handle->lgh_file))
675 GOTO(out, rc = PTR_ERR(handle->lgh_file));
677 handle->lgh_id.lgl_oseq = oa->o_seq;
678 handle->lgh_id.lgl_oid = oa->o_id;
679 handle->lgh_id.lgl_ogen = oa->o_generation;
682 handle->lgh_ctxt = ctxt;
685 llog_free_handle(handle);
692 static int llog_lvfs_close(struct llog_handle *handle)
697 rc = filp_close(handle->lgh_file, 0);
699 CERROR("error closing log: rc %d\n", rc);
703 static int llog_lvfs_destroy(struct llog_handle *handle)
705 struct dentry *fdentry;
707 struct obd_device *obd = handle->lgh_ctxt->loc_exp->exp_obd;
714 dir = MOUNT_CONFIGS_DIR;
716 fdentry = handle->lgh_file->f_dentry;
717 inode = fdentry->d_parent->d_inode;
718 if (strcmp(fdentry->d_parent->d_name.name, dir) == 0) {
719 struct lvfs_run_ctxt saved;
720 struct vfsmount *mnt = mntget(handle->lgh_file->f_vfsmnt);
722 push_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
724 rc = llog_lvfs_close(handle);
727 LOCK_INODE_MUTEX_PARENT(inode);
728 rc = ll_vfs_unlink(inode, fdentry, mnt);
729 UNLOCK_INODE_MUTEX(inode);
734 pop_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
742 oa->o_id = handle->lgh_id.lgl_oid;
743 oa->o_seq = handle->lgh_id.lgl_oseq;
744 oa->o_generation = handle->lgh_id.lgl_ogen;
746 oa->o_valid = OBD_MD_FLID | OBD_MD_FLGROUP | OBD_MD_FLGENER;
748 rc = llog_lvfs_close(handle);
752 th = fsfilt_start_log(obd, inode, FSFILT_OP_UNLINK, NULL, 1);
754 CERROR("fsfilt_start failed: %ld\n", PTR_ERR(th));
755 GOTO(out, rc = PTR_ERR(th));
758 rc = obd_destroy(NULL, handle->lgh_ctxt->loc_exp, oa,
759 NULL, NULL, NULL, NULL);
761 rc1 = fsfilt_commit(obd, inode, th, 0);
762 if (rc == 0 && rc1 != 0)
769 /* reads the catalog list */
770 int llog_get_cat_list(struct obd_device *disk_obd,
771 char *name, int idx, int count, struct llog_catid *idarray)
773 struct lvfs_run_ctxt saved;
776 int size = sizeof(*idarray) * count;
777 loff_t off = idx * sizeof(*idarray);
783 push_ctxt(&saved, &disk_obd->obd_lvfs_ctxt, NULL);
784 file = filp_open(name, O_RDWR | O_CREAT | O_LARGEFILE, 0700);
785 if (!file || IS_ERR(file)) {
787 CERROR("OBD filter: cannot open/create %s: rc = %d\n",
792 if (!S_ISREG(file->f_dentry->d_inode->i_mode)) {
793 CERROR("%s is not a regular file!: mode = %o\n", name,
794 file->f_dentry->d_inode->i_mode);
795 GOTO(out, rc = -ENOENT);
798 CDEBUG(D_CONFIG, "cat list: disk size=%d, read=%d\n",
799 (int)i_size_read(file->f_dentry->d_inode), size);
801 /* read for new ost index or for empty file */
802 memset(idarray, 0, size);
803 if (i_size_read(file->f_dentry->d_inode) < off)
806 rc = fsfilt_read_record(disk_obd, file, idarray, size, &off);
808 CERROR("OBD filter: error reading %s: rc %d\n", name, rc);
814 pop_ctxt(&saved, &disk_obd->obd_lvfs_ctxt, NULL);
815 if (file && !IS_ERR(file))
816 rc1 = filp_close(file, 0);
821 EXPORT_SYMBOL(llog_get_cat_list);
823 /* writes the cat list */
824 int llog_put_cat_list(struct obd_device *disk_obd,
825 char *name, int idx, int count, struct llog_catid *idarray)
827 struct lvfs_run_ctxt saved;
830 int size = sizeof(*idarray) * count;
831 loff_t off = idx * sizeof(*idarray);
836 push_ctxt(&saved, &disk_obd->obd_lvfs_ctxt, NULL);
837 file = filp_open(name, O_RDWR | O_CREAT | O_LARGEFILE, 0700);
838 if (!file || IS_ERR(file)) {
840 CERROR("OBD filter: cannot open/create %s: rc = %d\n",
845 if (!S_ISREG(file->f_dentry->d_inode->i_mode)) {
846 CERROR("%s is not a regular file!: mode = %o\n", name,
847 file->f_dentry->d_inode->i_mode);
848 GOTO(out, rc = -ENOENT);
851 rc = fsfilt_write_record(disk_obd, file, idarray, size, &off, 1);
853 CDEBUG(D_INODE,"OBD filter: error writeing %s: rc %d\n",
859 pop_ctxt(&saved, &disk_obd->obd_lvfs_ctxt, NULL);
860 if (file && !IS_ERR(file))
861 rc1 = filp_close(file, 0);
868 EXPORT_SYMBOL(llog_put_cat_list);
870 struct llog_operations llog_lvfs_ops = {
871 lop_write_rec: llog_lvfs_write_rec,
872 lop_next_block: llog_lvfs_next_block,
873 lop_prev_block: llog_lvfs_prev_block,
874 lop_read_header: llog_lvfs_read_header,
875 lop_create: llog_lvfs_create,
876 lop_destroy: llog_lvfs_destroy,
877 lop_close: llog_lvfs_close,
878 // lop_cancel: llog_lvfs_cancel,
881 EXPORT_SYMBOL(llog_lvfs_ops);
883 #else /* !__KERNEL__ */
885 static int llog_lvfs_read_header(struct llog_handle *handle)
891 static int llog_lvfs_write_rec(struct llog_handle *loghandle,
892 struct llog_rec_hdr *rec,
893 struct llog_cookie *reccookie, int cookiecount,
900 static int llog_lvfs_next_block(struct llog_handle *loghandle, int *cur_idx,
901 int next_idx, __u64 *cur_offset, void *buf,
908 static int llog_lvfs_prev_block(struct llog_handle *loghandle,
909 int prev_idx, void *buf, int len)
915 static int llog_lvfs_create(struct llog_ctxt *ctxt, struct llog_handle **res,
916 struct llog_logid *logid, char *name)
922 static int llog_lvfs_close(struct llog_handle *handle)
928 static int llog_lvfs_destroy(struct llog_handle *handle)
934 int llog_get_cat_list(struct obd_device *disk_obd,
935 char *name, int idx, int count, struct llog_catid *idarray)
941 int llog_put_cat_list(struct obd_device *disk_obd,
942 char *name, int idx, int count, struct llog_catid *idarray)
948 struct llog_operations llog_lvfs_ops = {
949 lop_write_rec: llog_lvfs_write_rec,
950 lop_next_block: llog_lvfs_next_block,
951 lop_prev_block: llog_lvfs_prev_block,
952 lop_read_header: llog_lvfs_read_header,
953 lop_create: llog_lvfs_create,
954 lop_destroy: llog_lvfs_destroy,
955 lop_close: llog_lvfs_close,
956 // lop_cancel: llog_lvfs_cancel,