ocfs2: Add the 'inode64' mount option.
[deliverable/linux.git] / fs / ocfs2 / super.c
CommitLineData
ccd979bd
MF
1/* -*- mode: c; c-basic-offset: 8; -*-
2 * vim: noexpandtab sw=8 ts=8 sts=0:
3 *
4 * super.c
5 *
6 * load/unload driver, mount/dismount volumes
7 *
8 * Copyright (C) 2002, 2004 Oracle. All rights reserved.
9 *
10 * This program is free software; you can redistribute it and/or
11 * modify it under the terms of the GNU General Public
12 * License as published by the Free Software Foundation; either
13 * version 2 of the License, or (at your option) any later version.
14 *
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
18 * General Public License for more details.
19 *
20 * You should have received a copy of the GNU General Public
21 * License along with this program; if not, write to the
22 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
23 * Boston, MA 021110-1307, USA.
24 */
25
26#include <linux/module.h>
27#include <linux/fs.h>
28#include <linux/types.h>
29#include <linux/slab.h>
30#include <linux/highmem.h>
31#include <linux/utsname.h>
32#include <linux/init.h>
33#include <linux/random.h>
34#include <linux/statfs.h>
35#include <linux/moduleparam.h>
36#include <linux/blkdev.h>
37#include <linux/socket.h>
38#include <linux/inet.h>
39#include <linux/parser.h>
40#include <linux/crc32.h>
41#include <linux/debugfs.h>
d550071c 42#include <linux/mount.h>
6953b4c0 43#include <linux/seq_file.h>
ccd979bd
MF
44
45#define MLOG_MASK_PREFIX ML_SUPER
46#include <cluster/masklog.h>
47
48#include "ocfs2.h"
49
50/* this should be the only file to include a version 1 header */
51#include "ocfs1_fs_compat.h"
52
53#include "alloc.h"
54#include "dlmglue.h"
55#include "export.h"
56#include "extent_map.h"
57#include "heartbeat.h"
58#include "inode.h"
59#include "journal.h"
60#include "localalloc.h"
61#include "namei.h"
62#include "slot_map.h"
63#include "super.h"
64#include "sysfile.h"
65#include "uptodate.h"
66#include "ver.h"
cf1d6c76 67#include "xattr.h"
ccd979bd
MF
68
69#include "buffer_head_io.h"
70
e18b890b 71static struct kmem_cache *ocfs2_inode_cachep = NULL;
ccd979bd 72
ccd979bd
MF
73/* OCFS2 needs to schedule several differnt types of work which
74 * require cluster locking, disk I/O, recovery waits, etc. Since these
75 * types of work tend to be heavy we avoid using the kernel events
76 * workqueue and schedule on our own. */
77struct workqueue_struct *ocfs2_wq = NULL;
78
79static struct dentry *ocfs2_debugfs_root = NULL;
80
81MODULE_AUTHOR("Oracle");
82MODULE_LICENSE("GPL");
83
c0123ade
TY
84struct mount_options
85{
d147b3d6 86 unsigned long commit_interval;
c0123ade
TY
87 unsigned long mount_opt;
88 unsigned int atime_quantum;
89 signed short slot;
2fbe8d1e 90 unsigned int localalloc_opt;
b61817e1 91 char cluster_stack[OCFS2_STACK_LABEL_LEN + 1];
c0123ade
TY
92};
93
ccd979bd 94static int ocfs2_parse_options(struct super_block *sb, char *options,
c0123ade 95 struct mount_options *mopt,
baf4661a 96 int is_remount);
d550071c 97static int ocfs2_show_options(struct seq_file *s, struct vfsmount *mnt);
ccd979bd
MF
98static void ocfs2_put_super(struct super_block *sb);
99static int ocfs2_mount_volume(struct super_block *sb);
100static int ocfs2_remount(struct super_block *sb, int *flags, char *data);
101static void ocfs2_dismount_volume(struct super_block *sb, int mnt_err);
102static int ocfs2_initialize_mem_caches(void);
103static void ocfs2_free_mem_caches(void);
104static void ocfs2_delete_osb(struct ocfs2_super *osb);
105
726c3342 106static int ocfs2_statfs(struct dentry *dentry, struct kstatfs *buf);
ccd979bd
MF
107
108static int ocfs2_sync_fs(struct super_block *sb, int wait);
109
110static int ocfs2_init_global_system_inodes(struct ocfs2_super *osb);
111static int ocfs2_init_local_system_inodes(struct ocfs2_super *osb);
bddb8eb3 112static void ocfs2_release_system_inodes(struct ocfs2_super *osb);
ccd979bd
MF
113static int ocfs2_check_volume(struct ocfs2_super *osb);
114static int ocfs2_verify_volume(struct ocfs2_dinode *di,
115 struct buffer_head *bh,
116 u32 sectsize);
117static int ocfs2_initialize_super(struct super_block *sb,
118 struct buffer_head *bh,
119 int sector_size);
120static int ocfs2_get_sector(struct super_block *sb,
121 struct buffer_head **bh,
122 int block,
123 int sect_size);
124static void ocfs2_write_super(struct super_block *sb);
125static struct inode *ocfs2_alloc_inode(struct super_block *sb);
126static void ocfs2_destroy_inode(struct inode *inode);
127
ee9b6d61 128static const struct super_operations ocfs2_sops = {
ccd979bd
MF
129 .statfs = ocfs2_statfs,
130 .alloc_inode = ocfs2_alloc_inode,
131 .destroy_inode = ocfs2_destroy_inode,
132 .drop_inode = ocfs2_drop_inode,
133 .clear_inode = ocfs2_clear_inode,
134 .delete_inode = ocfs2_delete_inode,
135 .sync_fs = ocfs2_sync_fs,
136 .write_super = ocfs2_write_super,
137 .put_super = ocfs2_put_super,
138 .remount_fs = ocfs2_remount,
d550071c 139 .show_options = ocfs2_show_options,
ccd979bd
MF
140};
141
142enum {
143 Opt_barrier,
144 Opt_err_panic,
145 Opt_err_ro,
146 Opt_intr,
147 Opt_nointr,
148 Opt_hb_none,
149 Opt_hb_local,
150 Opt_data_ordered,
151 Opt_data_writeback,
7f1a37e3 152 Opt_atime_quantum,
baf4661a 153 Opt_slot,
d147b3d6 154 Opt_commit,
2fbe8d1e 155 Opt_localalloc,
53fc622b 156 Opt_localflocks,
b61817e1 157 Opt_stack,
cf1d6c76
TY
158 Opt_user_xattr,
159 Opt_nouser_xattr,
12462f1d 160 Opt_inode64,
ccd979bd
MF
161 Opt_err,
162};
163
a447c093 164static const match_table_t tokens = {
ccd979bd
MF
165 {Opt_barrier, "barrier=%u"},
166 {Opt_err_panic, "errors=panic"},
167 {Opt_err_ro, "errors=remount-ro"},
168 {Opt_intr, "intr"},
169 {Opt_nointr, "nointr"},
170 {Opt_hb_none, OCFS2_HB_NONE},
171 {Opt_hb_local, OCFS2_HB_LOCAL},
172 {Opt_data_ordered, "data=ordered"},
173 {Opt_data_writeback, "data=writeback"},
7f1a37e3 174 {Opt_atime_quantum, "atime_quantum=%u"},
baf4661a 175 {Opt_slot, "preferred_slot=%u"},
d147b3d6 176 {Opt_commit, "commit=%u"},
2fbe8d1e 177 {Opt_localalloc, "localalloc=%d"},
53fc622b 178 {Opt_localflocks, "localflocks"},
b61817e1 179 {Opt_stack, "cluster_stack=%s"},
cf1d6c76
TY
180 {Opt_user_xattr, "user_xattr"},
181 {Opt_nouser_xattr, "nouser_xattr"},
12462f1d 182 {Opt_inode64, "inode64"},
ccd979bd
MF
183 {Opt_err, NULL}
184};
185
186/*
187 * write_super and sync_fs ripped right out of ext3.
188 */
189static void ocfs2_write_super(struct super_block *sb)
190{
7892f2f4 191 if (mutex_trylock(&sb->s_lock) != 0)
ccd979bd
MF
192 BUG();
193 sb->s_dirt = 0;
194}
195
196static int ocfs2_sync_fs(struct super_block *sb, int wait)
197{
bddb8eb3 198 int status;
ccd979bd
MF
199 tid_t target;
200 struct ocfs2_super *osb = OCFS2_SB(sb);
201
202 sb->s_dirt = 0;
203
204 if (ocfs2_is_hard_readonly(osb))
205 return -EROFS;
206
207 if (wait) {
208 status = ocfs2_flush_truncate_log(osb);
209 if (status < 0)
210 mlog_errno(status);
211 } else {
212 ocfs2_schedule_truncate_log_flush(osb, 0);
213 }
214
215 if (journal_start_commit(OCFS2_SB(sb)->journal->j_journal, &target)) {
216 if (wait)
217 log_wait_commit(OCFS2_SB(sb)->journal->j_journal,
218 target);
219 }
220 return 0;
221}
222
223static int ocfs2_init_global_system_inodes(struct ocfs2_super *osb)
224{
225 struct inode *new = NULL;
226 int status = 0;
227 int i;
228
229 mlog_entry_void();
230
5fa0613e 231 new = ocfs2_iget(osb, osb->root_blkno, OCFS2_FI_FLAG_SYSFILE, 0);
ccd979bd
MF
232 if (IS_ERR(new)) {
233 status = PTR_ERR(new);
234 mlog_errno(status);
235 goto bail;
236 }
237 osb->root_inode = new;
238
5fa0613e 239 new = ocfs2_iget(osb, osb->system_dir_blkno, OCFS2_FI_FLAG_SYSFILE, 0);
ccd979bd
MF
240 if (IS_ERR(new)) {
241 status = PTR_ERR(new);
242 mlog_errno(status);
243 goto bail;
244 }
245 osb->sys_root_inode = new;
246
247 for (i = OCFS2_FIRST_ONLINE_SYSTEM_INODE;
248 i <= OCFS2_LAST_GLOBAL_SYSTEM_INODE; i++) {
249 new = ocfs2_get_system_file_inode(osb, i, osb->slot_num);
250 if (!new) {
251 ocfs2_release_system_inodes(osb);
252 status = -EINVAL;
253 mlog_errno(status);
254 /* FIXME: Should ERROR_RO_FS */
255 mlog(ML_ERROR, "Unable to load system inode %d, "
256 "possibly corrupt fs?", i);
257 goto bail;
258 }
259 // the array now has one ref, so drop this one
260 iput(new);
261 }
262
263bail:
264 mlog_exit(status);
265 return status;
266}
267
268static int ocfs2_init_local_system_inodes(struct ocfs2_super *osb)
269{
270 struct inode *new = NULL;
271 int status = 0;
272 int i;
273
274 mlog_entry_void();
275
276 for (i = OCFS2_LAST_GLOBAL_SYSTEM_INODE + 1;
277 i < NUM_SYSTEM_INODES;
278 i++) {
279 new = ocfs2_get_system_file_inode(osb, i, osb->slot_num);
280 if (!new) {
281 ocfs2_release_system_inodes(osb);
282 status = -EINVAL;
283 mlog(ML_ERROR, "status=%d, sysfile=%d, slot=%d\n",
284 status, i, osb->slot_num);
285 goto bail;
286 }
287 /* the array now has one ref, so drop this one */
288 iput(new);
289 }
290
291bail:
292 mlog_exit(status);
293 return status;
294}
295
bddb8eb3 296static void ocfs2_release_system_inodes(struct ocfs2_super *osb)
ccd979bd 297{
bddb8eb3 298 int i;
ccd979bd
MF
299 struct inode *inode;
300
301 mlog_entry_void();
302
303 for (i = 0; i < NUM_SYSTEM_INODES; i++) {
304 inode = osb->system_inodes[i];
305 if (inode) {
306 iput(inode);
307 osb->system_inodes[i] = NULL;
308 }
309 }
310
311 inode = osb->sys_root_inode;
312 if (inode) {
313 iput(inode);
314 osb->sys_root_inode = NULL;
315 }
316
317 inode = osb->root_inode;
318 if (inode) {
319 iput(inode);
320 osb->root_inode = NULL;
321 }
322
bddb8eb3 323 mlog_exit(0);
ccd979bd
MF
324}
325
326/* We're allocating fs objects, use GFP_NOFS */
327static struct inode *ocfs2_alloc_inode(struct super_block *sb)
328{
329 struct ocfs2_inode_info *oi;
330
e6b4f8da 331 oi = kmem_cache_alloc(ocfs2_inode_cachep, GFP_NOFS);
ccd979bd
MF
332 if (!oi)
333 return NULL;
334
335 return &oi->vfs_inode;
336}
337
338static void ocfs2_destroy_inode(struct inode *inode)
339{
340 kmem_cache_free(ocfs2_inode_cachep, OCFS2_I(inode));
341}
342
5a254031
MF
343static unsigned long long ocfs2_max_file_offset(unsigned int bbits,
344 unsigned int cbits)
ccd979bd 345{
5a254031
MF
346 unsigned int bytes = 1 << cbits;
347 unsigned int trim = bytes;
348 unsigned int bitshift = 32;
349
350 /*
351 * i_size and all block offsets in ocfs2 are always 64 bits
352 * wide. i_clusters is 32 bits, in cluster-sized units. So on
353 * 64 bit platforms, cluster size will be the limiting factor.
ccd979bd
MF
354 */
355
356#if BITS_PER_LONG == 32
357# if defined(CONFIG_LBD)
2ecd05ae 358 BUILD_BUG_ON(sizeof(sector_t) != 8);
5a254031
MF
359 /*
360 * We might be limited by page cache size.
361 */
362 if (bytes > PAGE_CACHE_SIZE) {
363 bytes = PAGE_CACHE_SIZE;
364 trim = 1;
365 /*
366 * Shift by 31 here so that we don't get larger than
367 * MAX_LFS_FILESIZE
368 */
369 bitshift = 31;
370 }
ccd979bd 371# else
5a254031
MF
372 /*
373 * We are limited by the size of sector_t. Use block size, as
374 * that's what we expose to the VFS.
375 */
376 bytes = 1 << bbits;
377 trim = 1;
378 bitshift = 31;
ccd979bd
MF
379# endif
380#endif
381
5a254031
MF
382 /*
383 * Trim by a whole cluster when we can actually approach the
384 * on-disk limits. Otherwise we can overflow i_clusters when
385 * an extent start is at the max offset.
386 */
387 return (((unsigned long long)bytes) << bitshift) - trim;
ccd979bd
MF
388}
389
390static int ocfs2_remount(struct super_block *sb, int *flags, char *data)
391{
392 int incompat_features;
393 int ret = 0;
c0123ade 394 struct mount_options parsed_options;
ccd979bd
MF
395 struct ocfs2_super *osb = OCFS2_SB(sb);
396
c0123ade 397 if (!ocfs2_parse_options(sb, data, &parsed_options, 1)) {
ccd979bd
MF
398 ret = -EINVAL;
399 goto out;
400 }
401
402 if ((osb->s_mount_opt & OCFS2_MOUNT_HB_LOCAL) !=
c0123ade 403 (parsed_options.mount_opt & OCFS2_MOUNT_HB_LOCAL)) {
ccd979bd
MF
404 ret = -EINVAL;
405 mlog(ML_ERROR, "Cannot change heartbeat mode on remount\n");
406 goto out;
407 }
408
409 if ((osb->s_mount_opt & OCFS2_MOUNT_DATA_WRITEBACK) !=
c0123ade 410 (parsed_options.mount_opt & OCFS2_MOUNT_DATA_WRITEBACK)) {
ccd979bd
MF
411 ret = -EINVAL;
412 mlog(ML_ERROR, "Cannot change data mode on remount\n");
413 goto out;
414 }
415
12462f1d
JB
416 /* Probably don't want this on remount; it might
417 * mess with other nodes */
418 if (!(osb->s_mount_opt & OCFS2_MOUNT_INODE64) &&
419 (parsed_options.mount_opt & OCFS2_MOUNT_INODE64)) {
420 ret = -EINVAL;
421 mlog(ML_ERROR, "Cannot enable inode64 on remount\n");
422 goto out;
423 }
424
ccd979bd
MF
425 /* We're going to/from readonly mode. */
426 if ((*flags & MS_RDONLY) != (sb->s_flags & MS_RDONLY)) {
427 /* Lock here so the check of HARD_RO and the potential
428 * setting of SOFT_RO is atomic. */
429 spin_lock(&osb->osb_lock);
430 if (osb->osb_flags & OCFS2_OSB_HARD_RO) {
431 mlog(ML_ERROR, "Remount on readonly device is forbidden.\n");
432 ret = -EROFS;
433 goto unlock_osb;
434 }
435
436 if (*flags & MS_RDONLY) {
437 mlog(0, "Going to ro mode.\n");
438 sb->s_flags |= MS_RDONLY;
439 osb->osb_flags |= OCFS2_OSB_SOFT_RO;
440 } else {
441 mlog(0, "Making ro filesystem writeable.\n");
442
443 if (osb->osb_flags & OCFS2_OSB_ERROR_FS) {
444 mlog(ML_ERROR, "Cannot remount RDWR "
445 "filesystem due to previous errors.\n");
446 ret = -EROFS;
447 goto unlock_osb;
448 }
449 incompat_features = OCFS2_HAS_RO_COMPAT_FEATURE(sb, ~OCFS2_FEATURE_RO_COMPAT_SUPP);
450 if (incompat_features) {
451 mlog(ML_ERROR, "Cannot remount RDWR because "
452 "of unsupported optional features "
453 "(%x).\n", incompat_features);
454 ret = -EINVAL;
455 goto unlock_osb;
456 }
457 sb->s_flags &= ~MS_RDONLY;
458 osb->osb_flags &= ~OCFS2_OSB_SOFT_RO;
459 }
460unlock_osb:
461 spin_unlock(&osb->osb_lock);
462 }
463
464 if (!ret) {
ccd979bd
MF
465 /* Only save off the new mount options in case of a successful
466 * remount. */
c0123ade
TY
467 osb->s_mount_opt = parsed_options.mount_opt;
468 osb->s_atime_quantum = parsed_options.atime_quantum;
469 osb->preferred_slot = parsed_options.slot;
d147b3d6
MF
470 if (parsed_options.commit_interval)
471 osb->osb_commit_interval = parsed_options.commit_interval;
e001e796
MF
472
473 if (!ocfs2_is_hard_readonly(osb))
474 ocfs2_set_journal_params(osb);
ccd979bd
MF
475 }
476out:
477 return ret;
478}
479
480static int ocfs2_sb_probe(struct super_block *sb,
481 struct buffer_head **bh,
482 int *sector_size)
483{
bddb8eb3 484 int status, tmpstat;
ccd979bd
MF
485 struct ocfs1_vol_disk_hdr *hdr;
486 struct ocfs2_dinode *di;
487 int blksize;
488
489 *bh = NULL;
490
491 /* may be > 512 */
492 *sector_size = bdev_hardsect_size(sb->s_bdev);
493 if (*sector_size > OCFS2_MAX_BLOCKSIZE) {
494 mlog(ML_ERROR, "Hardware sector size too large: %d (max=%d)\n",
495 *sector_size, OCFS2_MAX_BLOCKSIZE);
496 status = -EINVAL;
497 goto bail;
498 }
499
500 /* Can this really happen? */
501 if (*sector_size < OCFS2_MIN_BLOCKSIZE)
502 *sector_size = OCFS2_MIN_BLOCKSIZE;
503
504 /* check block zero for old format */
505 status = ocfs2_get_sector(sb, bh, 0, *sector_size);
506 if (status < 0) {
507 mlog_errno(status);
508 goto bail;
509 }
510 hdr = (struct ocfs1_vol_disk_hdr *) (*bh)->b_data;
511 if (hdr->major_version == OCFS1_MAJOR_VERSION) {
512 mlog(ML_ERROR, "incompatible version: %u.%u\n",
513 hdr->major_version, hdr->minor_version);
514 status = -EINVAL;
515 }
516 if (memcmp(hdr->signature, OCFS1_VOLUME_SIGNATURE,
517 strlen(OCFS1_VOLUME_SIGNATURE)) == 0) {
518 mlog(ML_ERROR, "incompatible volume signature: %8s\n",
519 hdr->signature);
520 status = -EINVAL;
521 }
522 brelse(*bh);
523 *bh = NULL;
524 if (status < 0) {
525 mlog(ML_ERROR, "This is an ocfs v1 filesystem which must be "
526 "upgraded before mounting with ocfs v2\n");
527 goto bail;
528 }
529
530 /*
531 * Now check at magic offset for 512, 1024, 2048, 4096
532 * blocksizes. 4096 is the maximum blocksize because it is
533 * the minimum clustersize.
534 */
535 status = -EINVAL;
536 for (blksize = *sector_size;
537 blksize <= OCFS2_MAX_BLOCKSIZE;
538 blksize <<= 1) {
539 tmpstat = ocfs2_get_sector(sb, bh,
540 OCFS2_SUPER_BLOCK_BLKNO,
541 blksize);
542 if (tmpstat < 0) {
543 status = tmpstat;
544 mlog_errno(status);
545 goto bail;
546 }
547 di = (struct ocfs2_dinode *) (*bh)->b_data;
548 status = ocfs2_verify_volume(di, *bh, blksize);
549 if (status >= 0)
550 goto bail;
551 brelse(*bh);
552 *bh = NULL;
553 if (status != -EAGAIN)
554 break;
555 }
556
557bail:
558 return status;
559}
560
c271c5c2
SM
561static int ocfs2_verify_heartbeat(struct ocfs2_super *osb)
562{
563 if (ocfs2_mount_local(osb)) {
564 if (osb->s_mount_opt & OCFS2_MOUNT_HB_LOCAL) {
565 mlog(ML_ERROR, "Cannot heartbeat on a locally "
566 "mounted device.\n");
567 return -EINVAL;
568 }
569 }
570
b61817e1
JB
571 if (ocfs2_userspace_stack(osb)) {
572 if (osb->s_mount_opt & OCFS2_MOUNT_HB_LOCAL) {
573 mlog(ML_ERROR, "Userspace stack expected, but "
574 "o2cb heartbeat arguments passed to mount\n");
575 return -EINVAL;
576 }
577 }
578
c271c5c2 579 if (!(osb->s_mount_opt & OCFS2_MOUNT_HB_LOCAL)) {
b61817e1
JB
580 if (!ocfs2_mount_local(osb) && !ocfs2_is_hard_readonly(osb) &&
581 !ocfs2_userspace_stack(osb)) {
c271c5c2
SM
582 mlog(ML_ERROR, "Heartbeat has to be started to mount "
583 "a read-write clustered device.\n");
584 return -EINVAL;
585 }
586 }
587
588 return 0;
589}
590
b61817e1
JB
591/*
592 * If we're using a userspace stack, mount should have passed
593 * a name that matches the disk. If not, mount should not
594 * have passed a stack.
595 */
596static int ocfs2_verify_userspace_stack(struct ocfs2_super *osb,
597 struct mount_options *mopt)
598{
599 if (!ocfs2_userspace_stack(osb) && mopt->cluster_stack[0]) {
600 mlog(ML_ERROR,
601 "cluster stack passed to mount, but this filesystem "
602 "does not support it\n");
603 return -EINVAL;
604 }
605
606 if (ocfs2_userspace_stack(osb) &&
607 strncmp(osb->osb_cluster_stack, mopt->cluster_stack,
608 OCFS2_STACK_LABEL_LEN)) {
609 mlog(ML_ERROR,
610 "cluster stack passed to mount (\"%s\") does not "
611 "match the filesystem (\"%s\")\n",
612 mopt->cluster_stack,
613 osb->osb_cluster_stack);
614 return -EINVAL;
615 }
616
617 return 0;
618}
619
ccd979bd
MF
620static int ocfs2_fill_super(struct super_block *sb, void *data, int silent)
621{
622 struct dentry *root;
623 int status, sector_size;
c0123ade 624 struct mount_options parsed_options;
ccd979bd
MF
625 struct inode *inode = NULL;
626 struct ocfs2_super *osb = NULL;
627 struct buffer_head *bh = NULL;
c271c5c2 628 char nodestr[8];
ccd979bd
MF
629
630 mlog_entry("%p, %p, %i", sb, data, silent);
631
c0123ade 632 if (!ocfs2_parse_options(sb, data, &parsed_options, 0)) {
ccd979bd
MF
633 status = -EINVAL;
634 goto read_super_error;
635 }
636
637 /* probe for superblock */
638 status = ocfs2_sb_probe(sb, &bh, &sector_size);
639 if (status < 0) {
640 mlog(ML_ERROR, "superblock probe failed!\n");
641 goto read_super_error;
642 }
643
644 status = ocfs2_initialize_super(sb, bh, sector_size);
645 osb = OCFS2_SB(sb);
646 if (status < 0) {
647 mlog_errno(status);
648 goto read_super_error;
649 }
650 brelse(bh);
651 bh = NULL;
c0123ade
TY
652 osb->s_mount_opt = parsed_options.mount_opt;
653 osb->s_atime_quantum = parsed_options.atime_quantum;
654 osb->preferred_slot = parsed_options.slot;
d147b3d6 655 osb->osb_commit_interval = parsed_options.commit_interval;
9c7af40b
MF
656 osb->local_alloc_default_bits = ocfs2_megabytes_to_clusters(sb, parsed_options.localalloc_opt);
657 osb->local_alloc_bits = osb->local_alloc_default_bits;
ccd979bd 658
b61817e1
JB
659 status = ocfs2_verify_userspace_stack(osb, &parsed_options);
660 if (status)
661 goto read_super_error;
662
ccd979bd
MF
663 sb->s_magic = OCFS2_SUPER_MAGIC;
664
665 /* Hard readonly mode only if: bdev_read_only, MS_RDONLY,
666 * heartbeat=none */
667 if (bdev_read_only(sb->s_bdev)) {
668 if (!(sb->s_flags & MS_RDONLY)) {
669 status = -EACCES;
670 mlog(ML_ERROR, "Readonly device detected but readonly "
671 "mount was not specified.\n");
672 goto read_super_error;
673 }
674
675 /* You should not be able to start a local heartbeat
676 * on a readonly device. */
677 if (osb->s_mount_opt & OCFS2_MOUNT_HB_LOCAL) {
678 status = -EROFS;
679 mlog(ML_ERROR, "Local heartbeat specified on readonly "
680 "device.\n");
681 goto read_super_error;
682 }
683
684 status = ocfs2_check_journals_nolocks(osb);
685 if (status < 0) {
686 if (status == -EROFS)
687 mlog(ML_ERROR, "Recovery required on readonly "
688 "file system, but write access is "
689 "unavailable.\n");
690 else
691 mlog_errno(status);
692 goto read_super_error;
693 }
694
695 ocfs2_set_ro_flag(osb, 1);
696
697 printk(KERN_NOTICE "Readonly device detected. No cluster "
698 "services will be utilized for this mount. Recovery "
699 "will be skipped.\n");
700 }
701
702 if (!ocfs2_is_hard_readonly(osb)) {
ccd979bd
MF
703 if (sb->s_flags & MS_RDONLY)
704 ocfs2_set_ro_flag(osb, 0);
705 }
706
c271c5c2
SM
707 status = ocfs2_verify_heartbeat(osb);
708 if (status < 0) {
709 mlog_errno(status);
710 goto read_super_error;
711 }
712
ccd979bd
MF
713 osb->osb_debug_root = debugfs_create_dir(osb->uuid_str,
714 ocfs2_debugfs_root);
715 if (!osb->osb_debug_root) {
716 status = -EINVAL;
717 mlog(ML_ERROR, "Unable to create per-mount debugfs root.\n");
718 goto read_super_error;
719 }
720
721 status = ocfs2_mount_volume(sb);
722 if (osb->root_inode)
723 inode = igrab(osb->root_inode);
724
725 if (status < 0)
726 goto read_super_error;
727
728 if (!inode) {
729 status = -EIO;
730 mlog_errno(status);
731 goto read_super_error;
732 }
733
734 root = d_alloc_root(inode);
735 if (!root) {
736 status = -ENOMEM;
737 mlog_errno(status);
738 goto read_super_error;
739 }
740
741 sb->s_root = root;
742
743 ocfs2_complete_mount_recovery(osb);
744
c271c5c2
SM
745 if (ocfs2_mount_local(osb))
746 snprintf(nodestr, sizeof(nodestr), "local");
747 else
19fdb624 748 snprintf(nodestr, sizeof(nodestr), "%u", osb->node_num);
c271c5c2
SM
749
750 printk(KERN_INFO "ocfs2: Mounting device (%s) on (node %s, slot %d) "
781ee3e2 751 "with %s data mode.\n",
c271c5c2 752 osb->dev_str, nodestr, osb->slot_num,
ccd979bd
MF
753 osb->s_mount_opt & OCFS2_MOUNT_DATA_WRITEBACK ? "writeback" :
754 "ordered");
755
756 atomic_set(&osb->vol_state, VOLUME_MOUNTED);
757 wake_up(&osb->osb_mount_event);
758
759 mlog_exit(status);
760 return status;
761
762read_super_error:
763 if (bh != NULL)
764 brelse(bh);
765
766 if (inode)
767 iput(inode);
768
769 if (osb) {
770 atomic_set(&osb->vol_state, VOLUME_DISABLED);
771 wake_up(&osb->osb_mount_event);
772 ocfs2_dismount_volume(sb, 1);
773 }
774
775 mlog_exit(status);
776 return status;
777}
778
454e2398
DH
779static int ocfs2_get_sb(struct file_system_type *fs_type,
780 int flags,
781 const char *dev_name,
782 void *data,
783 struct vfsmount *mnt)
ccd979bd 784{
454e2398
DH
785 return get_sb_bdev(fs_type, flags, dev_name, data, ocfs2_fill_super,
786 mnt);
ccd979bd
MF
787}
788
789static struct file_system_type ocfs2_fs_type = {
790 .owner = THIS_MODULE,
791 .name = "ocfs2",
792 .get_sb = ocfs2_get_sb, /* is this called when we mount
793 * the fs? */
794 .kill_sb = kill_block_super, /* set to the generic one
795 * right now, but do we
796 * need to change that? */
1ba9da2f 797 .fs_flags = FS_REQUIRES_DEV|FS_RENAME_DOES_D_MOVE,
ccd979bd
MF
798 .next = NULL
799};
800
801static int ocfs2_parse_options(struct super_block *sb,
802 char *options,
c0123ade 803 struct mount_options *mopt,
ccd979bd
MF
804 int is_remount)
805{
806 int status;
807 char *p;
808
809 mlog_entry("remount: %d, options: \"%s\"\n", is_remount,
810 options ? options : "(none)");
811
d147b3d6 812 mopt->commit_interval = 0;
c0123ade
TY
813 mopt->mount_opt = 0;
814 mopt->atime_quantum = OCFS2_DEFAULT_ATIME_QUANTUM;
815 mopt->slot = OCFS2_INVALID_SLOT;
2fbe8d1e 816 mopt->localalloc_opt = OCFS2_DEFAULT_LOCAL_ALLOC_SIZE;
b61817e1 817 mopt->cluster_stack[0] = '\0';
ccd979bd
MF
818
819 if (!options) {
820 status = 1;
821 goto bail;
822 }
823
824 while ((p = strsep(&options, ",")) != NULL) {
825 int token, option;
826 substring_t args[MAX_OPT_ARGS];
827
828 if (!*p)
829 continue;
830
831 token = match_token(p, tokens, args);
832 switch (token) {
833 case Opt_hb_local:
c0123ade 834 mopt->mount_opt |= OCFS2_MOUNT_HB_LOCAL;
ccd979bd
MF
835 break;
836 case Opt_hb_none:
c0123ade 837 mopt->mount_opt &= ~OCFS2_MOUNT_HB_LOCAL;
ccd979bd
MF
838 break;
839 case Opt_barrier:
840 if (match_int(&args[0], &option)) {
841 status = 0;
842 goto bail;
843 }
844 if (option)
c0123ade 845 mopt->mount_opt |= OCFS2_MOUNT_BARRIER;
ccd979bd 846 else
c0123ade 847 mopt->mount_opt &= ~OCFS2_MOUNT_BARRIER;
ccd979bd
MF
848 break;
849 case Opt_intr:
c0123ade 850 mopt->mount_opt &= ~OCFS2_MOUNT_NOINTR;
ccd979bd
MF
851 break;
852 case Opt_nointr:
c0123ade 853 mopt->mount_opt |= OCFS2_MOUNT_NOINTR;
ccd979bd
MF
854 break;
855 case Opt_err_panic:
c0123ade 856 mopt->mount_opt |= OCFS2_MOUNT_ERRORS_PANIC;
ccd979bd
MF
857 break;
858 case Opt_err_ro:
c0123ade 859 mopt->mount_opt &= ~OCFS2_MOUNT_ERRORS_PANIC;
ccd979bd
MF
860 break;
861 case Opt_data_ordered:
c0123ade 862 mopt->mount_opt &= ~OCFS2_MOUNT_DATA_WRITEBACK;
ccd979bd
MF
863 break;
864 case Opt_data_writeback:
c0123ade 865 mopt->mount_opt |= OCFS2_MOUNT_DATA_WRITEBACK;
ccd979bd 866 break;
cf1d6c76
TY
867 case Opt_user_xattr:
868 mopt->mount_opt &= ~OCFS2_MOUNT_NOUSERXATTR;
869 break;
870 case Opt_nouser_xattr:
871 mopt->mount_opt |= OCFS2_MOUNT_NOUSERXATTR;
872 break;
7f1a37e3
TY
873 case Opt_atime_quantum:
874 if (match_int(&args[0], &option)) {
875 status = 0;
876 goto bail;
877 }
878 if (option >= 0)
c0123ade 879 mopt->atime_quantum = option;
7f1a37e3 880 break;
baf4661a
SM
881 case Opt_slot:
882 option = 0;
883 if (match_int(&args[0], &option)) {
884 status = 0;
885 goto bail;
886 }
887 if (option)
c0123ade 888 mopt->slot = (s16)option;
baf4661a 889 break;
d147b3d6
MF
890 case Opt_commit:
891 option = 0;
892 if (match_int(&args[0], &option)) {
893 status = 0;
894 goto bail;
895 }
896 if (option < 0)
897 return 0;
898 if (option == 0)
899 option = JBD_DEFAULT_MAX_COMMIT_AGE;
900 mopt->commit_interval = HZ * option;
901 break;
2fbe8d1e
SM
902 case Opt_localalloc:
903 option = 0;
904 if (match_int(&args[0], &option)) {
905 status = 0;
906 goto bail;
907 }
908 if (option >= 0 && (option <= ocfs2_local_alloc_size(sb) * 8))
909 mopt->localalloc_opt = option;
910 break;
53fc622b
MF
911 case Opt_localflocks:
912 /*
913 * Changing this during remount could race
914 * flock() requests, or "unbalance" existing
915 * ones (e.g., a lock is taken in one mode but
916 * dropped in the other). If users care enough
917 * to flip locking modes during remount, we
918 * could add a "local" flag to individual
919 * flock structures for proper tracking of
920 * state.
921 */
922 if (!is_remount)
923 mopt->mount_opt |= OCFS2_MOUNT_LOCALFLOCKS;
924 break;
b61817e1
JB
925 case Opt_stack:
926 /* Check both that the option we were passed
927 * is of the right length and that it is a proper
928 * string of the right length.
929 */
930 if (((args[0].to - args[0].from) !=
931 OCFS2_STACK_LABEL_LEN) ||
932 (strnlen(args[0].from,
933 OCFS2_STACK_LABEL_LEN) !=
934 OCFS2_STACK_LABEL_LEN)) {
935 mlog(ML_ERROR,
936 "Invalid cluster_stack option\n");
937 status = 0;
938 goto bail;
939 }
940 memcpy(mopt->cluster_stack, args[0].from,
941 OCFS2_STACK_LABEL_LEN);
942 mopt->cluster_stack[OCFS2_STACK_LABEL_LEN] = '\0';
943 break;
12462f1d
JB
944 case Opt_inode64:
945 mopt->mount_opt |= OCFS2_MOUNT_INODE64;
946 break;
ccd979bd
MF
947 default:
948 mlog(ML_ERROR,
949 "Unrecognized mount option \"%s\" "
950 "or missing value\n", p);
951 status = 0;
952 goto bail;
953 }
954 }
955
956 status = 1;
957
958bail:
959 mlog_exit(status);
960 return status;
961}
962
d550071c
SM
963static int ocfs2_show_options(struct seq_file *s, struct vfsmount *mnt)
964{
965 struct ocfs2_super *osb = OCFS2_SB(mnt->mnt_sb);
966 unsigned long opts = osb->s_mount_opt;
ebcee4b5 967 unsigned int local_alloc_megs;
d550071c
SM
968
969 if (opts & OCFS2_MOUNT_HB_LOCAL)
970 seq_printf(s, ",_netdev,heartbeat=local");
971 else
972 seq_printf(s, ",heartbeat=none");
973
974 if (opts & OCFS2_MOUNT_NOINTR)
975 seq_printf(s, ",nointr");
976
977 if (opts & OCFS2_MOUNT_DATA_WRITEBACK)
978 seq_printf(s, ",data=writeback");
979 else
980 seq_printf(s, ",data=ordered");
981
982 if (opts & OCFS2_MOUNT_BARRIER)
983 seq_printf(s, ",barrier=1");
984
985 if (opts & OCFS2_MOUNT_ERRORS_PANIC)
986 seq_printf(s, ",errors=panic");
987 else
988 seq_printf(s, ",errors=remount-ro");
989
990 if (osb->preferred_slot != OCFS2_INVALID_SLOT)
991 seq_printf(s, ",preferred_slot=%d", osb->preferred_slot);
992
993 if (osb->s_atime_quantum != OCFS2_DEFAULT_ATIME_QUANTUM)
994 seq_printf(s, ",atime_quantum=%u", osb->s_atime_quantum);
995
d147b3d6
MF
996 if (osb->osb_commit_interval)
997 seq_printf(s, ",commit=%u",
998 (unsigned) (osb->osb_commit_interval / HZ));
999
ebcee4b5
MF
1000 local_alloc_megs = osb->local_alloc_bits >> (20 - osb->s_clustersize_bits);
1001 if (local_alloc_megs != OCFS2_DEFAULT_LOCAL_ALLOC_SIZE)
1002 seq_printf(s, ",localalloc=%d", local_alloc_megs);
2fbe8d1e 1003
53fc622b
MF
1004 if (opts & OCFS2_MOUNT_LOCALFLOCKS)
1005 seq_printf(s, ",localflocks,");
1006
b61817e1
JB
1007 if (osb->osb_cluster_stack[0])
1008 seq_printf(s, ",cluster_stack=%.*s", OCFS2_STACK_LABEL_LEN,
1009 osb->osb_cluster_stack);
1010
12462f1d
JB
1011 if (opts & OCFS2_MOUNT_INODE64)
1012 seq_printf(s, ",inode64");
1013
d550071c
SM
1014 return 0;
1015}
1016
ccd979bd
MF
1017static int __init ocfs2_init(void)
1018{
1019 int status;
1020
1021 mlog_entry_void();
1022
1023 ocfs2_print_version();
1024
ccd979bd
MF
1025 status = init_ocfs2_uptodate_cache();
1026 if (status < 0) {
1027 mlog_errno(status);
1028 goto leave;
1029 }
1030
1031 status = ocfs2_initialize_mem_caches();
1032 if (status < 0) {
1033 mlog_errno(status);
1034 goto leave;
1035 }
1036
1037 ocfs2_wq = create_singlethread_workqueue("ocfs2_wq");
1038 if (!ocfs2_wq) {
1039 status = -ENOMEM;
1040 goto leave;
1041 }
1042
ccd979bd
MF
1043 ocfs2_debugfs_root = debugfs_create_dir("ocfs2", NULL);
1044 if (!ocfs2_debugfs_root) {
1045 status = -EFAULT;
1046 mlog(ML_ERROR, "Unable to create ocfs2 debugfs root.\n");
1047 }
1048
63e0c48a
JB
1049 ocfs2_set_locking_protocol();
1050
ccd979bd
MF
1051leave:
1052 if (status < 0) {
1053 ocfs2_free_mem_caches();
1054 exit_ocfs2_uptodate_cache();
ccd979bd
MF
1055 }
1056
1057 mlog_exit(status);
1058
1059 if (status >= 0) {
1060 return register_filesystem(&ocfs2_fs_type);
1061 } else
1062 return -1;
1063}
1064
1065static void __exit ocfs2_exit(void)
1066{
1067 mlog_entry_void();
1068
1069 if (ocfs2_wq) {
1070 flush_workqueue(ocfs2_wq);
1071 destroy_workqueue(ocfs2_wq);
1072 }
1073
1074 debugfs_remove(ocfs2_debugfs_root);
1075
1076 ocfs2_free_mem_caches();
1077
1078 unregister_filesystem(&ocfs2_fs_type);
1079
ccd979bd
MF
1080 exit_ocfs2_uptodate_cache();
1081
1082 mlog_exit_void();
1083}
1084
1085static void ocfs2_put_super(struct super_block *sb)
1086{
1087 mlog_entry("(0x%p)\n", sb);
1088
1089 ocfs2_sync_blockdev(sb);
1090 ocfs2_dismount_volume(sb, 0);
1091
1092 mlog_exit_void();
1093}
1094
726c3342 1095static int ocfs2_statfs(struct dentry *dentry, struct kstatfs *buf)
ccd979bd
MF
1096{
1097 struct ocfs2_super *osb;
1098 u32 numbits, freebits;
1099 int status;
1100 struct ocfs2_dinode *bm_lock;
1101 struct buffer_head *bh = NULL;
1102 struct inode *inode = NULL;
1103
726c3342 1104 mlog_entry("(%p, %p)\n", dentry->d_sb, buf);
ccd979bd 1105
726c3342 1106 osb = OCFS2_SB(dentry->d_sb);
ccd979bd
MF
1107
1108 inode = ocfs2_get_system_file_inode(osb,
1109 GLOBAL_BITMAP_SYSTEM_INODE,
1110 OCFS2_INVALID_SLOT);
1111 if (!inode) {
1112 mlog(ML_ERROR, "failed to get bitmap inode\n");
1113 status = -EIO;
1114 goto bail;
1115 }
1116
e63aecb6 1117 status = ocfs2_inode_lock(inode, &bh, 0);
ccd979bd
MF
1118 if (status < 0) {
1119 mlog_errno(status);
1120 goto bail;
1121 }
1122
1123 bm_lock = (struct ocfs2_dinode *) bh->b_data;
1124
1125 numbits = le32_to_cpu(bm_lock->id1.bitmap1.i_total);
1126 freebits = numbits - le32_to_cpu(bm_lock->id1.bitmap1.i_used);
1127
1128 buf->f_type = OCFS2_SUPER_MAGIC;
726c3342 1129 buf->f_bsize = dentry->d_sb->s_blocksize;
ccd979bd
MF
1130 buf->f_namelen = OCFS2_MAX_FILENAME_LEN;
1131 buf->f_blocks = ((sector_t) numbits) *
1132 (osb->s_clustersize >> osb->sb->s_blocksize_bits);
1133 buf->f_bfree = ((sector_t) freebits) *
1134 (osb->s_clustersize >> osb->sb->s_blocksize_bits);
1135 buf->f_bavail = buf->f_bfree;
1136 buf->f_files = numbits;
1137 buf->f_ffree = freebits;
1138
1139 brelse(bh);
1140
e63aecb6 1141 ocfs2_inode_unlock(inode, 0);
ccd979bd
MF
1142 status = 0;
1143bail:
1144 if (inode)
1145 iput(inode);
1146
1147 mlog_exit(status);
1148
1149 return status;
1150}
1151
51cc5068 1152static void ocfs2_inode_init_once(void *data)
ccd979bd
MF
1153{
1154 struct ocfs2_inode_info *oi = data;
1155
a35afb83
CL
1156 oi->ip_flags = 0;
1157 oi->ip_open_count = 0;
1158 spin_lock_init(&oi->ip_lock);
1159 ocfs2_extent_map_init(&oi->vfs_inode);
1160 INIT_LIST_HEAD(&oi->ip_io_markers);
1161 oi->ip_created_trans = 0;
1162 oi->ip_last_trans = 0;
1163 oi->ip_dir_start_lookup = 0;
ccd979bd 1164
a35afb83 1165 init_rwsem(&oi->ip_alloc_sem);
cf1d6c76 1166 init_rwsem(&oi->ip_xattr_sem);
a35afb83 1167 mutex_init(&oi->ip_io_mutex);
ccd979bd 1168
a35afb83
CL
1169 oi->ip_blkno = 0ULL;
1170 oi->ip_clusters = 0;
ccd979bd 1171
a35afb83 1172 ocfs2_lock_res_init_once(&oi->ip_rw_lockres);
e63aecb6 1173 ocfs2_lock_res_init_once(&oi->ip_inode_lockres);
a35afb83 1174 ocfs2_lock_res_init_once(&oi->ip_open_lockres);
ccd979bd 1175
a35afb83 1176 ocfs2_metadata_cache_init(&oi->vfs_inode);
ccd979bd 1177
a35afb83 1178 inode_init_once(&oi->vfs_inode);
ccd979bd
MF
1179}
1180
1181static int ocfs2_initialize_mem_caches(void)
1182{
1183 ocfs2_inode_cachep = kmem_cache_create("ocfs2_inode_cache",
fffb60f9
PJ
1184 sizeof(struct ocfs2_inode_info),
1185 0,
1186 (SLAB_HWCACHE_ALIGN|SLAB_RECLAIM_ACCOUNT|
1187 SLAB_MEM_SPREAD),
20c2df83 1188 ocfs2_inode_init_once);
ccd979bd
MF
1189 if (!ocfs2_inode_cachep)
1190 return -ENOMEM;
1191
ccd979bd
MF
1192 return 0;
1193}
1194
1195static void ocfs2_free_mem_caches(void)
1196{
1197 if (ocfs2_inode_cachep)
1198 kmem_cache_destroy(ocfs2_inode_cachep);
ccd979bd
MF
1199
1200 ocfs2_inode_cachep = NULL;
ccd979bd
MF
1201}
1202
1203static int ocfs2_get_sector(struct super_block *sb,
1204 struct buffer_head **bh,
1205 int block,
1206 int sect_size)
1207{
1208 if (!sb_set_blocksize(sb, sect_size)) {
1209 mlog(ML_ERROR, "unable to set blocksize\n");
1210 return -EIO;
1211 }
1212
1213 *bh = sb_getblk(sb, block);
1214 if (!*bh) {
1215 mlog_errno(-EIO);
1216 return -EIO;
1217 }
1218 lock_buffer(*bh);
1219 if (!buffer_dirty(*bh))
1220 clear_buffer_uptodate(*bh);
1221 unlock_buffer(*bh);
1222 ll_rw_block(READ, 1, bh);
1223 wait_on_buffer(*bh);
1224 return 0;
1225}
1226
ccd979bd
MF
1227static int ocfs2_mount_volume(struct super_block *sb)
1228{
1229 int status = 0;
1230 int unlock_super = 0;
1231 struct ocfs2_super *osb = OCFS2_SB(sb);
1232
1233 mlog_entry_void();
1234
1235 if (ocfs2_is_hard_readonly(osb))
1236 goto leave;
1237
ccd979bd
MF
1238 status = ocfs2_dlm_init(osb);
1239 if (status < 0) {
1240 mlog_errno(status);
1241 goto leave;
1242 }
1243
ccd979bd
MF
1244 status = ocfs2_super_lock(osb, 1);
1245 if (status < 0) {
1246 mlog_errno(status);
1247 goto leave;
1248 }
1249 unlock_super = 1;
1250
1251 /* This will load up the node map and add ourselves to it. */
1252 status = ocfs2_find_slot(osb);
1253 if (status < 0) {
1254 mlog_errno(status);
1255 goto leave;
1256 }
1257
ccd979bd
MF
1258 /* load all node-local system inodes */
1259 status = ocfs2_init_local_system_inodes(osb);
1260 if (status < 0) {
1261 mlog_errno(status);
1262 goto leave;
1263 }
1264
1265 status = ocfs2_check_volume(osb);
1266 if (status < 0) {
1267 mlog_errno(status);
1268 goto leave;
1269 }
1270
1271 status = ocfs2_truncate_log_init(osb);
1272 if (status < 0) {
1273 mlog_errno(status);
1274 goto leave;
1275 }
1276
c271c5c2
SM
1277 if (ocfs2_mount_local(osb))
1278 goto leave;
1279
ccd979bd
MF
1280leave:
1281 if (unlock_super)
1282 ocfs2_super_unlock(osb, 1);
1283
1284 mlog_exit(status);
1285 return status;
1286}
1287
ccd979bd
MF
1288static void ocfs2_dismount_volume(struct super_block *sb, int mnt_err)
1289{
286eaa95 1290 int tmp, hangup_needed = 0;
ccd979bd 1291 struct ocfs2_super *osb = NULL;
c271c5c2 1292 char nodestr[8];
ccd979bd
MF
1293
1294 mlog_entry("(0x%p)\n", sb);
1295
1296 BUG_ON(!sb);
1297 osb = OCFS2_SB(sb);
1298 BUG_ON(!osb);
1299
1300 ocfs2_shutdown_local_alloc(osb);
1301
1302 ocfs2_truncate_log_shutdown(osb);
1303
553abd04
JB
1304 /* This will disable recovery and flush any recovery work. */
1305 ocfs2_recovery_exit(osb);
ccd979bd
MF
1306
1307 ocfs2_journal_shutdown(osb);
1308
1309 ocfs2_sync_blockdev(sb);
1310
4670c46d
JB
1311 /* No cluster connection means we've failed during mount, so skip
1312 * all the steps which depended on that to complete. */
1313 if (osb->cconn) {
ccd979bd
MF
1314 tmp = ocfs2_super_lock(osb, 1);
1315 if (tmp < 0) {
1316 mlog_errno(tmp);
1317 return;
1318 }
19b613d4 1319 }
ccd979bd 1320
19b613d4
MF
1321 if (osb->slot_num != OCFS2_INVALID_SLOT)
1322 ocfs2_put_slot(osb);
ccd979bd 1323
4670c46d 1324 if (osb->cconn)
ccd979bd 1325 ocfs2_super_unlock(osb, 1);
ccd979bd
MF
1326
1327 ocfs2_release_system_inodes(osb);
1328
6953b4c0 1329 /*
6953b4c0
JB
1330 * If we're dismounting due to mount error, mount.ocfs2 will clean
1331 * up heartbeat. If we're a local mount, there is no heartbeat.
1332 * If we failed before we got a uuid_str yet, we can't stop
1333 * heartbeat. Otherwise, do it.
1334 */
1335 if (!mnt_err && !ocfs2_mount_local(osb) && osb->uuid_str)
286eaa95
JB
1336 hangup_needed = 1;
1337
1338 if (osb->cconn)
1339 ocfs2_dlm_shutdown(osb, hangup_needed);
1340
1341 debugfs_remove(osb->osb_debug_root);
1342
1343 if (hangup_needed)
6953b4c0 1344 ocfs2_cluster_hangup(osb->uuid_str, strlen(osb->uuid_str));
ccd979bd
MF
1345
1346 atomic_set(&osb->vol_state, VOLUME_DISMOUNTED);
1347
c271c5c2
SM
1348 if (ocfs2_mount_local(osb))
1349 snprintf(nodestr, sizeof(nodestr), "local");
1350 else
19fdb624 1351 snprintf(nodestr, sizeof(nodestr), "%u", osb->node_num);
c271c5c2
SM
1352
1353 printk(KERN_INFO "ocfs2: Unmounting device (%s) on (node %s)\n",
1354 osb->dev_str, nodestr);
ccd979bd
MF
1355
1356 ocfs2_delete_osb(osb);
1357 kfree(osb);
1358 sb->s_dev = 0;
1359 sb->s_fs_info = NULL;
1360}
1361
1362static int ocfs2_setup_osb_uuid(struct ocfs2_super *osb, const unsigned char *uuid,
1363 unsigned uuid_bytes)
1364{
1365 int i, ret;
1366 char *ptr;
1367
1368 BUG_ON(uuid_bytes != OCFS2_VOL_UUID_LEN);
1369
cd861280 1370 osb->uuid_str = kzalloc(OCFS2_VOL_UUID_LEN * 2 + 1, GFP_KERNEL);
ccd979bd
MF
1371 if (osb->uuid_str == NULL)
1372 return -ENOMEM;
1373
ccd979bd
MF
1374 for (i = 0, ptr = osb->uuid_str; i < OCFS2_VOL_UUID_LEN; i++) {
1375 /* print with null */
1376 ret = snprintf(ptr, 3, "%02X", uuid[i]);
1377 if (ret != 2) /* drop super cleans up */
1378 return -EINVAL;
1379 /* then only advance past the last char */
1380 ptr += 2;
1381 }
1382
1383 return 0;
1384}
1385
1386static int ocfs2_initialize_super(struct super_block *sb,
1387 struct buffer_head *bh,
1388 int sector_size)
1389{
bddb8eb3 1390 int status;
5a254031
MF
1391 int i, cbits, bbits;
1392 struct ocfs2_dinode *di = (struct ocfs2_dinode *)bh->b_data;
ccd979bd 1393 struct inode *inode = NULL;
ccd979bd
MF
1394 struct ocfs2_journal *journal;
1395 __le32 uuid_net_key;
1396 struct ocfs2_super *osb;
1397
1398 mlog_entry_void();
1399
cd861280 1400 osb = kzalloc(sizeof(struct ocfs2_super), GFP_KERNEL);
ccd979bd
MF
1401 if (!osb) {
1402 status = -ENOMEM;
1403 mlog_errno(status);
1404 goto bail;
1405 }
1406
1407 sb->s_fs_info = osb;
1408 sb->s_op = &ocfs2_sops;
1409 sb->s_export_op = &ocfs2_export_ops;
cf1d6c76 1410 sb->s_xattr = ocfs2_xattr_handlers;
e0dceaf0 1411 sb->s_time_gran = 1;
ccd979bd
MF
1412 sb->s_flags |= MS_NOATIME;
1413 /* this is needed to support O_LARGEFILE */
5a254031
MF
1414 cbits = le32_to_cpu(di->id2.i_super.s_clustersize_bits);
1415 bbits = le32_to_cpu(di->id2.i_super.s_blocksize_bits);
1416 sb->s_maxbytes = ocfs2_max_file_offset(bbits, cbits);
ccd979bd
MF
1417
1418 osb->sb = sb;
1419 /* Save off for ocfs2_rw_direct */
1420 osb->s_sectsize_bits = blksize_bits(sector_size);
ebdec83b 1421 BUG_ON(!osb->s_sectsize_bits);
ccd979bd 1422
34d024f8
MF
1423 spin_lock_init(&osb->dc_task_lock);
1424 init_waitqueue_head(&osb->dc_event);
1425 osb->dc_work_sequence = 0;
1426 osb->dc_wake_sequence = 0;
ccd979bd
MF
1427 INIT_LIST_HEAD(&osb->blocked_lock_list);
1428 osb->blocked_lock_count = 0;
ccd979bd 1429 spin_lock_init(&osb->osb_lock);
4d0ddb2c 1430 ocfs2_init_inode_steal_slot(osb);
ccd979bd
MF
1431
1432 atomic_set(&osb->alloc_stats.moves, 0);
1433 atomic_set(&osb->alloc_stats.local_data, 0);
1434 atomic_set(&osb->alloc_stats.bitmap_data, 0);
1435 atomic_set(&osb->alloc_stats.bg_allocs, 0);
1436 atomic_set(&osb->alloc_stats.bg_extends, 0);
1437
1438 ocfs2_init_node_maps(osb);
1439
1440 snprintf(osb->dev_str, sizeof(osb->dev_str), "%u,%u",
1441 MAJOR(osb->sb->s_dev), MINOR(osb->sb->s_dev));
1442
553abd04
JB
1443 status = ocfs2_recovery_init(osb);
1444 if (status) {
1445 mlog(ML_ERROR, "Unable to initialize recovery state\n");
1446 mlog_errno(status);
1447 goto bail;
1448 }
ccd979bd
MF
1449
1450 init_waitqueue_head(&osb->checkpoint_event);
1451 atomic_set(&osb->needs_checkpoint, 0);
1452
7f1a37e3
TY
1453 osb->s_atime_quantum = OCFS2_DEFAULT_ATIME_QUANTUM;
1454
ccd979bd
MF
1455 osb->slot_num = OCFS2_INVALID_SLOT;
1456
8154da3d
TY
1457 osb->s_xattr_inline_size = le16_to_cpu(
1458 di->id2.i_super.s_xattr_inline_size);
fdd77704 1459
ccd979bd
MF
1460 osb->local_alloc_state = OCFS2_LA_UNUSED;
1461 osb->local_alloc_bh = NULL;
9c7af40b 1462 INIT_DELAYED_WORK(&osb->la_enable_wq, ocfs2_la_enable_worker);
ccd979bd 1463
ccd979bd
MF
1464 init_waitqueue_head(&osb->osb_mount_event);
1465
1466 osb->vol_label = kmalloc(OCFS2_MAX_VOL_LABEL_LEN, GFP_KERNEL);
1467 if (!osb->vol_label) {
1468 mlog(ML_ERROR, "unable to alloc vol label\n");
1469 status = -ENOMEM;
1470 goto bail;
1471 }
1472
ccd979bd
MF
1473 osb->max_slots = le16_to_cpu(di->id2.i_super.s_max_slots);
1474 if (osb->max_slots > OCFS2_MAX_SLOTS || osb->max_slots == 0) {
1475 mlog(ML_ERROR, "Invalid number of node slots (%u)\n",
1476 osb->max_slots);
1477 status = -EINVAL;
1478 goto bail;
1479 }
781ee3e2 1480 mlog(0, "max_slots for this device: %u\n", osb->max_slots);
ccd979bd 1481
539d8264
SM
1482 osb->slot_recovery_generations =
1483 kcalloc(osb->max_slots, sizeof(*osb->slot_recovery_generations),
1484 GFP_KERNEL);
1485 if (!osb->slot_recovery_generations) {
1486 status = -ENOMEM;
1487 mlog_errno(status);
1488 goto bail;
1489 }
1490
b4df6ed8
MF
1491 init_waitqueue_head(&osb->osb_wipe_event);
1492 osb->osb_orphan_wipes = kcalloc(osb->max_slots,
1493 sizeof(*osb->osb_orphan_wipes),
1494 GFP_KERNEL);
1495 if (!osb->osb_orphan_wipes) {
1496 status = -ENOMEM;
1497 mlog_errno(status);
1498 goto bail;
1499 }
1500
ccd979bd
MF
1501 osb->s_feature_compat =
1502 le32_to_cpu(OCFS2_RAW_SB(di)->s_feature_compat);
1503 osb->s_feature_ro_compat =
1504 le32_to_cpu(OCFS2_RAW_SB(di)->s_feature_ro_compat);
1505 osb->s_feature_incompat =
1506 le32_to_cpu(OCFS2_RAW_SB(di)->s_feature_incompat);
1507
1508 if ((i = OCFS2_HAS_INCOMPAT_FEATURE(osb->sb, ~OCFS2_FEATURE_INCOMPAT_SUPP))) {
1509 mlog(ML_ERROR, "couldn't mount because of unsupported "
1510 "optional features (%x).\n", i);
1511 status = -EINVAL;
1512 goto bail;
1513 }
1514 if (!(osb->sb->s_flags & MS_RDONLY) &&
1515 (i = OCFS2_HAS_RO_COMPAT_FEATURE(osb->sb, ~OCFS2_FEATURE_RO_COMPAT_SUPP))) {
1516 mlog(ML_ERROR, "couldn't mount RDWR because of "
1517 "unsupported optional features (%x).\n", i);
1518 status = -EINVAL;
1519 goto bail;
1520 }
1521
b61817e1
JB
1522 if (ocfs2_userspace_stack(osb)) {
1523 memcpy(osb->osb_cluster_stack,
1524 OCFS2_RAW_SB(di)->s_cluster_info.ci_stack,
1525 OCFS2_STACK_LABEL_LEN);
1526 osb->osb_cluster_stack[OCFS2_STACK_LABEL_LEN] = '\0';
1527 if (strlen(osb->osb_cluster_stack) != OCFS2_STACK_LABEL_LEN) {
1528 mlog(ML_ERROR,
1529 "couldn't mount because of an invalid "
1530 "cluster stack label (%s) \n",
1531 osb->osb_cluster_stack);
1532 status = -EINVAL;
1533 goto bail;
1534 }
1535 } else {
1536 /* The empty string is identical with classic tools that
1537 * don't know about s_cluster_info. */
1538 osb->osb_cluster_stack[0] = '\0';
1539 }
1540
ccd979bd
MF
1541 get_random_bytes(&osb->s_next_generation, sizeof(u32));
1542
1543 /* FIXME
1544 * This should be done in ocfs2_journal_init(), but unknown
1545 * ordering issues will cause the filesystem to crash.
1546 * If anyone wants to figure out what part of the code
1547 * refers to osb->journal before ocfs2_journal_init() is run,
1548 * be my guest.
1549 */
1550 /* initialize our journal structure */
1551
cd861280 1552 journal = kzalloc(sizeof(struct ocfs2_journal), GFP_KERNEL);
ccd979bd
MF
1553 if (!journal) {
1554 mlog(ML_ERROR, "unable to alloc journal\n");
1555 status = -ENOMEM;
1556 goto bail;
1557 }
1558 osb->journal = journal;
1559 journal->j_osb = osb;
1560
1561 atomic_set(&journal->j_num_trans, 0);
1562 init_rwsem(&journal->j_trans_barrier);
1563 init_waitqueue_head(&journal->j_checkpointed);
1564 spin_lock_init(&journal->j_lock);
1565 journal->j_trans_id = (unsigned long) 1;
1566 INIT_LIST_HEAD(&journal->j_la_cleanups);
c4028958 1567 INIT_WORK(&journal->j_recovery_work, ocfs2_complete_recovery);
ccd979bd
MF
1568 journal->j_state = OCFS2_JOURNAL_FREE;
1569
1570 /* get some pseudo constants for clustersize bits */
1571 osb->s_clustersize_bits =
1572 le32_to_cpu(di->id2.i_super.s_clustersize_bits);
1573 osb->s_clustersize = 1 << osb->s_clustersize_bits;
1574 mlog(0, "clusterbits=%d\n", osb->s_clustersize_bits);
1575
1576 if (osb->s_clustersize < OCFS2_MIN_CLUSTERSIZE ||
1577 osb->s_clustersize > OCFS2_MAX_CLUSTERSIZE) {
1578 mlog(ML_ERROR, "Volume has invalid cluster size (%d)\n",
1579 osb->s_clustersize);
1580 status = -EINVAL;
1581 goto bail;
1582 }
1583
1584 if (ocfs2_clusters_to_blocks(osb->sb, le32_to_cpu(di->i_clusters) - 1)
1585 > (u32)~0UL) {
1586 mlog(ML_ERROR, "Volume might try to write to blocks beyond "
1587 "what jbd can address in 32 bits.\n");
1588 status = -EINVAL;
1589 goto bail;
1590 }
1591
1592 if (ocfs2_setup_osb_uuid(osb, di->id2.i_super.s_uuid,
1593 sizeof(di->id2.i_super.s_uuid))) {
1594 mlog(ML_ERROR, "Out of memory trying to setup our uuid.\n");
1595 status = -ENOMEM;
1596 goto bail;
1597 }
1598
78427043 1599 memcpy(&uuid_net_key, di->id2.i_super.s_uuid, sizeof(uuid_net_key));
ccd979bd
MF
1600
1601 strncpy(osb->vol_label, di->id2.i_super.s_label, 63);
1602 osb->vol_label[63] = '\0';
1603 osb->root_blkno = le64_to_cpu(di->id2.i_super.s_root_blkno);
1604 osb->system_dir_blkno = le64_to_cpu(di->id2.i_super.s_system_dir_blkno);
1605 osb->first_cluster_group_blkno =
1606 le64_to_cpu(di->id2.i_super.s_first_cluster_group);
1607 osb->fs_generation = le32_to_cpu(di->i_fs_generation);
cf1d6c76 1608 osb->uuid_hash = le32_to_cpu(di->id2.i_super.s_uuid_hash);
ccd979bd
MF
1609 mlog(0, "vol_label: %s\n", osb->vol_label);
1610 mlog(0, "uuid: %s\n", osb->uuid_str);
b0697053
MF
1611 mlog(0, "root_blkno=%llu, system_dir_blkno=%llu\n",
1612 (unsigned long long)osb->root_blkno,
1613 (unsigned long long)osb->system_dir_blkno);
ccd979bd
MF
1614
1615 osb->osb_dlm_debug = ocfs2_new_dlm_debug();
1616 if (!osb->osb_dlm_debug) {
1617 status = -ENOMEM;
1618 mlog_errno(status);
1619 goto bail;
1620 }
1621
1622 atomic_set(&osb->vol_state, VOLUME_INIT);
1623
1624 /* load root, system_dir, and all global system inodes */
1625 status = ocfs2_init_global_system_inodes(osb);
1626 if (status < 0) {
1627 mlog_errno(status);
1628 goto bail;
1629 }
1630
1631 /*
1632 * global bitmap
1633 */
1634 inode = ocfs2_get_system_file_inode(osb, GLOBAL_BITMAP_SYSTEM_INODE,
1635 OCFS2_INVALID_SLOT);
1636 if (!inode) {
1637 status = -EINVAL;
1638 mlog_errno(status);
1639 goto bail;
1640 }
1641
1642 osb->bitmap_blkno = OCFS2_I(inode)->ip_blkno;
ccd979bd 1643 iput(inode);
ccd979bd 1644
e9d578a8 1645 osb->bitmap_cpg = ocfs2_group_bitmap_size(sb) * 8;
ccd979bd
MF
1646
1647 status = ocfs2_init_slot_info(osb);
1648 if (status < 0) {
1649 mlog_errno(status);
1650 goto bail;
1651 }
1652
ccd979bd
MF
1653bail:
1654 mlog_exit(status);
1655 return status;
1656}
1657
1658/*
1659 * will return: -EAGAIN if it is ok to keep searching for superblocks
1660 * -EINVAL if there is a bad superblock
1661 * 0 on success
1662 */
1663static int ocfs2_verify_volume(struct ocfs2_dinode *di,
1664 struct buffer_head *bh,
1665 u32 blksz)
1666{
1667 int status = -EAGAIN;
1668
1669 mlog_entry_void();
1670
1671 if (memcmp(di->i_signature, OCFS2_SUPER_BLOCK_SIGNATURE,
1672 strlen(OCFS2_SUPER_BLOCK_SIGNATURE)) == 0) {
1673 status = -EINVAL;
1674 if ((1 << le32_to_cpu(di->id2.i_super.s_blocksize_bits)) != blksz) {
1675 mlog(ML_ERROR, "found superblock with incorrect block "
1676 "size: found %u, should be %u\n",
1677 1 << le32_to_cpu(di->id2.i_super.s_blocksize_bits),
1678 blksz);
1679 } else if (le16_to_cpu(di->id2.i_super.s_major_rev_level) !=
1680 OCFS2_MAJOR_REV_LEVEL ||
1681 le16_to_cpu(di->id2.i_super.s_minor_rev_level) !=
1682 OCFS2_MINOR_REV_LEVEL) {
1683 mlog(ML_ERROR, "found superblock with bad version: "
1684 "found %u.%u, should be %u.%u\n",
1685 le16_to_cpu(di->id2.i_super.s_major_rev_level),
1686 le16_to_cpu(di->id2.i_super.s_minor_rev_level),
1687 OCFS2_MAJOR_REV_LEVEL,
1688 OCFS2_MINOR_REV_LEVEL);
1689 } else if (bh->b_blocknr != le64_to_cpu(di->i_blkno)) {
1690 mlog(ML_ERROR, "bad block number on superblock: "
b0697053 1691 "found %llu, should be %llu\n",
1ca1a111 1692 (unsigned long long)le64_to_cpu(di->i_blkno),
b0697053 1693 (unsigned long long)bh->b_blocknr);
ccd979bd
MF
1694 } else if (le32_to_cpu(di->id2.i_super.s_clustersize_bits) < 12 ||
1695 le32_to_cpu(di->id2.i_super.s_clustersize_bits) > 20) {
1696 mlog(ML_ERROR, "bad cluster size found: %u\n",
1697 1 << le32_to_cpu(di->id2.i_super.s_clustersize_bits));
1698 } else if (!le64_to_cpu(di->id2.i_super.s_root_blkno)) {
1699 mlog(ML_ERROR, "bad root_blkno: 0\n");
1700 } else if (!le64_to_cpu(di->id2.i_super.s_system_dir_blkno)) {
1701 mlog(ML_ERROR, "bad system_dir_blkno: 0\n");
1702 } else if (le16_to_cpu(di->id2.i_super.s_max_slots) > OCFS2_MAX_SLOTS) {
1703 mlog(ML_ERROR,
1704 "Superblock slots found greater than file system "
1705 "maximum: found %u, max %u\n",
1706 le16_to_cpu(di->id2.i_super.s_max_slots),
1707 OCFS2_MAX_SLOTS);
1708 } else {
1709 /* found it! */
1710 status = 0;
1711 }
1712 }
1713
1714 mlog_exit(status);
1715 return status;
1716}
1717
1718static int ocfs2_check_volume(struct ocfs2_super *osb)
1719{
bddb8eb3 1720 int status;
ccd979bd 1721 int dirty;
c271c5c2 1722 int local;
ccd979bd
MF
1723 struct ocfs2_dinode *local_alloc = NULL; /* only used if we
1724 * recover
1725 * ourselves. */
1726
1727 mlog_entry_void();
1728
1729 /* Init our journal object. */
1730 status = ocfs2_journal_init(osb->journal, &dirty);
1731 if (status < 0) {
1732 mlog(ML_ERROR, "Could not initialize journal!\n");
1733 goto finally;
1734 }
1735
1736 /* If the journal was unmounted cleanly then we don't want to
1737 * recover anything. Otherwise, journal_load will do that
1738 * dirty work for us :) */
1739 if (!dirty) {
1740 status = ocfs2_journal_wipe(osb->journal, 0);
1741 if (status < 0) {
1742 mlog_errno(status);
1743 goto finally;
1744 }
1745 } else {
1746 mlog(ML_NOTICE, "File system was not unmounted cleanly, "
1747 "recovering volume.\n");
1748 }
1749
c271c5c2
SM
1750 local = ocfs2_mount_local(osb);
1751
ccd979bd 1752 /* will play back anything left in the journal. */
539d8264 1753 status = ocfs2_journal_load(osb->journal, local, dirty);
01af4820
WW
1754 if (status < 0) {
1755 mlog(ML_ERROR, "ocfs2 journal load failed! %d\n", status);
1756 goto finally;
1757 }
ccd979bd
MF
1758
1759 if (dirty) {
1760 /* recover my local alloc if we didn't unmount cleanly. */
1761 status = ocfs2_begin_local_alloc_recovery(osb,
1762 osb->slot_num,
1763 &local_alloc);
1764 if (status < 0) {
1765 mlog_errno(status);
1766 goto finally;
1767 }
1768 /* we complete the recovery process after we've marked
1769 * ourselves as mounted. */
1770 }
1771
1772 mlog(0, "Journal loaded.\n");
1773
1774 status = ocfs2_load_local_alloc(osb);
1775 if (status < 0) {
1776 mlog_errno(status);
1777 goto finally;
1778 }
1779
1780 if (dirty) {
1781 /* Recovery will be completed after we've mounted the
1782 * rest of the volume. */
1783 osb->dirty = 1;
1784 osb->local_alloc_copy = local_alloc;
1785 local_alloc = NULL;
1786 }
1787
1788 /* go through each journal, trylock it and if you get the
1789 * lock, and it's marked as dirty, set the bit in the recover
1790 * map and launch a recovery thread for it. */
1791 status = ocfs2_mark_dead_nodes(osb);
1792 if (status < 0)
1793 mlog_errno(status);
1794
1795finally:
1796 if (local_alloc)
1797 kfree(local_alloc);
1798
1799 mlog_exit(status);
1800 return status;
1801}
1802
1803/*
1804 * The routine gets called from dismount or close whenever a dismount on
1805 * volume is requested and the osb open count becomes 1.
1806 * It will remove the osb from the global list and also free up all the
1807 * initialized resources and fileobject.
1808 */
1809static void ocfs2_delete_osb(struct ocfs2_super *osb)
1810{
1811 mlog_entry_void();
1812
1813 /* This function assumes that the caller has the main osb resource */
1814
8e8a4603 1815 ocfs2_free_slot_info(osb);
ccd979bd 1816
b4df6ed8 1817 kfree(osb->osb_orphan_wipes);
539d8264 1818 kfree(osb->slot_recovery_generations);
ccd979bd
MF
1819 /* FIXME
1820 * This belongs in journal shutdown, but because we have to
1821 * allocate osb->journal at the start of ocfs2_initalize_osb(),
1822 * we free it here.
1823 */
1824 kfree(osb->journal);
1825 if (osb->local_alloc_copy)
1826 kfree(osb->local_alloc_copy);
1827 kfree(osb->uuid_str);
1828 ocfs2_put_dlm_debug(osb->osb_dlm_debug);
1829 memset(osb, 0, sizeof(struct ocfs2_super));
1830
1831 mlog_exit_void();
1832}
1833
1834/* Put OCFS2 into a readonly state, or (if the user specifies it),
1835 * panic(). We do not support continue-on-error operation. */
1836static void ocfs2_handle_error(struct super_block *sb)
1837{
1838 struct ocfs2_super *osb = OCFS2_SB(sb);
1839
1840 if (osb->s_mount_opt & OCFS2_MOUNT_ERRORS_PANIC)
1841 panic("OCFS2: (device %s): panic forced after error\n",
1842 sb->s_id);
1843
1844 ocfs2_set_osb_flag(osb, OCFS2_OSB_ERROR_FS);
1845
1846 if (sb->s_flags & MS_RDONLY &&
1847 (ocfs2_is_soft_readonly(osb) ||
1848 ocfs2_is_hard_readonly(osb)))
1849 return;
1850
1851 printk(KERN_CRIT "File system is now read-only due to the potential "
1852 "of on-disk corruption. Please run fsck.ocfs2 once the file "
1853 "system is unmounted.\n");
1854 sb->s_flags |= MS_RDONLY;
1855 ocfs2_set_ro_flag(osb, 0);
1856}
1857
1858static char error_buf[1024];
1859
1860void __ocfs2_error(struct super_block *sb,
1861 const char *function,
1862 const char *fmt, ...)
1863{
1864 va_list args;
1865
1866 va_start(args, fmt);
4a6e617a 1867 vsnprintf(error_buf, sizeof(error_buf), fmt, args);
ccd979bd
MF
1868 va_end(args);
1869
1870 /* Not using mlog here because we want to show the actual
1871 * function the error came from. */
1872 printk(KERN_CRIT "OCFS2: ERROR (device %s): %s: %s\n",
1873 sb->s_id, function, error_buf);
1874
1875 ocfs2_handle_error(sb);
1876}
1877
1878/* Handle critical errors. This is intentionally more drastic than
1879 * ocfs2_handle_error, so we only use for things like journal errors,
1880 * etc. */
1881void __ocfs2_abort(struct super_block* sb,
1882 const char *function,
1883 const char *fmt, ...)
1884{
1885 va_list args;
1886
1887 va_start(args, fmt);
4a6e617a 1888 vsnprintf(error_buf, sizeof(error_buf), fmt, args);
ccd979bd
MF
1889 va_end(args);
1890
1891 printk(KERN_CRIT "OCFS2: abort (device %s): %s: %s\n",
1892 sb->s_id, function, error_buf);
1893
1894 /* We don't have the cluster support yet to go straight to
1895 * hard readonly in here. Until then, we want to keep
1896 * ocfs2_abort() so that we can at least mark critical
1897 * errors.
1898 *
1899 * TODO: This should abort the journal and alert other nodes
1900 * that our slot needs recovery. */
1901
1902 /* Force a panic(). This stinks, but it's better than letting
1903 * things continue without having a proper hard readonly
1904 * here. */
1905 OCFS2_SB(sb)->s_mount_opt |= OCFS2_MOUNT_ERRORS_PANIC;
1906 ocfs2_handle_error(sb);
1907}
1908
1909module_init(ocfs2_init);
1910module_exit(ocfs2_exit);
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