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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 | 71 | static 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. */ | |
77 | struct workqueue_struct *ocfs2_wq = NULL; | |
78 | ||
79 | static struct dentry *ocfs2_debugfs_root = NULL; | |
80 | ||
81 | MODULE_AUTHOR("Oracle"); | |
82 | MODULE_LICENSE("GPL"); | |
83 | ||
c0123ade TY |
84 | struct 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 | 94 | static int ocfs2_parse_options(struct super_block *sb, char *options, |
c0123ade | 95 | struct mount_options *mopt, |
baf4661a | 96 | int is_remount); |
d550071c | 97 | static int ocfs2_show_options(struct seq_file *s, struct vfsmount *mnt); |
ccd979bd MF |
98 | static void ocfs2_put_super(struct super_block *sb); |
99 | static int ocfs2_mount_volume(struct super_block *sb); | |
100 | static int ocfs2_remount(struct super_block *sb, int *flags, char *data); | |
101 | static void ocfs2_dismount_volume(struct super_block *sb, int mnt_err); | |
102 | static int ocfs2_initialize_mem_caches(void); | |
103 | static void ocfs2_free_mem_caches(void); | |
104 | static void ocfs2_delete_osb(struct ocfs2_super *osb); | |
105 | ||
726c3342 | 106 | static int ocfs2_statfs(struct dentry *dentry, struct kstatfs *buf); |
ccd979bd MF |
107 | |
108 | static int ocfs2_sync_fs(struct super_block *sb, int wait); | |
109 | ||
110 | static int ocfs2_init_global_system_inodes(struct ocfs2_super *osb); | |
111 | static int ocfs2_init_local_system_inodes(struct ocfs2_super *osb); | |
bddb8eb3 | 112 | static void ocfs2_release_system_inodes(struct ocfs2_super *osb); |
ccd979bd MF |
113 | static int ocfs2_check_volume(struct ocfs2_super *osb); |
114 | static int ocfs2_verify_volume(struct ocfs2_dinode *di, | |
115 | struct buffer_head *bh, | |
116 | u32 sectsize); | |
117 | static int ocfs2_initialize_super(struct super_block *sb, | |
118 | struct buffer_head *bh, | |
119 | int sector_size); | |
120 | static int ocfs2_get_sector(struct super_block *sb, | |
121 | struct buffer_head **bh, | |
122 | int block, | |
123 | int sect_size); | |
124 | static void ocfs2_write_super(struct super_block *sb); | |
125 | static struct inode *ocfs2_alloc_inode(struct super_block *sb); | |
126 | static void ocfs2_destroy_inode(struct inode *inode); | |
127 | ||
ee9b6d61 | 128 | static 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 | ||
142 | enum { | |
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 | 164 | static 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 | */ | |
189 | static 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 | ||
196 | static 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 | ||
2b4e30fb JB |
215 | if (jbd2_journal_start_commit(OCFS2_SB(sb)->journal->j_journal, |
216 | &target)) { | |
ccd979bd | 217 | if (wait) |
2b4e30fb JB |
218 | jbd2_log_wait_commit(OCFS2_SB(sb)->journal->j_journal, |
219 | target); | |
ccd979bd MF |
220 | } |
221 | return 0; | |
222 | } | |
223 | ||
224 | static int ocfs2_init_global_system_inodes(struct ocfs2_super *osb) | |
225 | { | |
226 | struct inode *new = NULL; | |
227 | int status = 0; | |
228 | int i; | |
229 | ||
230 | mlog_entry_void(); | |
231 | ||
5fa0613e | 232 | new = ocfs2_iget(osb, osb->root_blkno, OCFS2_FI_FLAG_SYSFILE, 0); |
ccd979bd MF |
233 | if (IS_ERR(new)) { |
234 | status = PTR_ERR(new); | |
235 | mlog_errno(status); | |
236 | goto bail; | |
237 | } | |
238 | osb->root_inode = new; | |
239 | ||
5fa0613e | 240 | new = ocfs2_iget(osb, osb->system_dir_blkno, OCFS2_FI_FLAG_SYSFILE, 0); |
ccd979bd MF |
241 | if (IS_ERR(new)) { |
242 | status = PTR_ERR(new); | |
243 | mlog_errno(status); | |
244 | goto bail; | |
245 | } | |
246 | osb->sys_root_inode = new; | |
247 | ||
248 | for (i = OCFS2_FIRST_ONLINE_SYSTEM_INODE; | |
249 | i <= OCFS2_LAST_GLOBAL_SYSTEM_INODE; i++) { | |
250 | new = ocfs2_get_system_file_inode(osb, i, osb->slot_num); | |
251 | if (!new) { | |
252 | ocfs2_release_system_inodes(osb); | |
253 | status = -EINVAL; | |
254 | mlog_errno(status); | |
255 | /* FIXME: Should ERROR_RO_FS */ | |
256 | mlog(ML_ERROR, "Unable to load system inode %d, " | |
257 | "possibly corrupt fs?", i); | |
258 | goto bail; | |
259 | } | |
260 | // the array now has one ref, so drop this one | |
261 | iput(new); | |
262 | } | |
263 | ||
264 | bail: | |
265 | mlog_exit(status); | |
266 | return status; | |
267 | } | |
268 | ||
269 | static int ocfs2_init_local_system_inodes(struct ocfs2_super *osb) | |
270 | { | |
271 | struct inode *new = NULL; | |
272 | int status = 0; | |
273 | int i; | |
274 | ||
275 | mlog_entry_void(); | |
276 | ||
277 | for (i = OCFS2_LAST_GLOBAL_SYSTEM_INODE + 1; | |
278 | i < NUM_SYSTEM_INODES; | |
279 | i++) { | |
280 | new = ocfs2_get_system_file_inode(osb, i, osb->slot_num); | |
281 | if (!new) { | |
282 | ocfs2_release_system_inodes(osb); | |
283 | status = -EINVAL; | |
284 | mlog(ML_ERROR, "status=%d, sysfile=%d, slot=%d\n", | |
285 | status, i, osb->slot_num); | |
286 | goto bail; | |
287 | } | |
288 | /* the array now has one ref, so drop this one */ | |
289 | iput(new); | |
290 | } | |
291 | ||
292 | bail: | |
293 | mlog_exit(status); | |
294 | return status; | |
295 | } | |
296 | ||
bddb8eb3 | 297 | static void ocfs2_release_system_inodes(struct ocfs2_super *osb) |
ccd979bd | 298 | { |
bddb8eb3 | 299 | int i; |
ccd979bd MF |
300 | struct inode *inode; |
301 | ||
302 | mlog_entry_void(); | |
303 | ||
304 | for (i = 0; i < NUM_SYSTEM_INODES; i++) { | |
305 | inode = osb->system_inodes[i]; | |
306 | if (inode) { | |
307 | iput(inode); | |
308 | osb->system_inodes[i] = NULL; | |
309 | } | |
310 | } | |
311 | ||
312 | inode = osb->sys_root_inode; | |
313 | if (inode) { | |
314 | iput(inode); | |
315 | osb->sys_root_inode = NULL; | |
316 | } | |
317 | ||
318 | inode = osb->root_inode; | |
319 | if (inode) { | |
320 | iput(inode); | |
321 | osb->root_inode = NULL; | |
322 | } | |
323 | ||
bddb8eb3 | 324 | mlog_exit(0); |
ccd979bd MF |
325 | } |
326 | ||
327 | /* We're allocating fs objects, use GFP_NOFS */ | |
328 | static struct inode *ocfs2_alloc_inode(struct super_block *sb) | |
329 | { | |
330 | struct ocfs2_inode_info *oi; | |
331 | ||
e6b4f8da | 332 | oi = kmem_cache_alloc(ocfs2_inode_cachep, GFP_NOFS); |
ccd979bd MF |
333 | if (!oi) |
334 | return NULL; | |
335 | ||
2b4e30fb | 336 | jbd2_journal_init_jbd_inode(&oi->ip_jinode, &oi->vfs_inode); |
ccd979bd MF |
337 | return &oi->vfs_inode; |
338 | } | |
339 | ||
340 | static void ocfs2_destroy_inode(struct inode *inode) | |
341 | { | |
342 | kmem_cache_free(ocfs2_inode_cachep, OCFS2_I(inode)); | |
343 | } | |
344 | ||
5a254031 MF |
345 | static unsigned long long ocfs2_max_file_offset(unsigned int bbits, |
346 | unsigned int cbits) | |
ccd979bd | 347 | { |
5a254031 MF |
348 | unsigned int bytes = 1 << cbits; |
349 | unsigned int trim = bytes; | |
350 | unsigned int bitshift = 32; | |
351 | ||
352 | /* | |
353 | * i_size and all block offsets in ocfs2 are always 64 bits | |
354 | * wide. i_clusters is 32 bits, in cluster-sized units. So on | |
355 | * 64 bit platforms, cluster size will be the limiting factor. | |
ccd979bd MF |
356 | */ |
357 | ||
358 | #if BITS_PER_LONG == 32 | |
359 | # if defined(CONFIG_LBD) | |
2ecd05ae | 360 | BUILD_BUG_ON(sizeof(sector_t) != 8); |
5a254031 MF |
361 | /* |
362 | * We might be limited by page cache size. | |
363 | */ | |
364 | if (bytes > PAGE_CACHE_SIZE) { | |
365 | bytes = PAGE_CACHE_SIZE; | |
366 | trim = 1; | |
367 | /* | |
368 | * Shift by 31 here so that we don't get larger than | |
369 | * MAX_LFS_FILESIZE | |
370 | */ | |
371 | bitshift = 31; | |
372 | } | |
ccd979bd | 373 | # else |
5a254031 MF |
374 | /* |
375 | * We are limited by the size of sector_t. Use block size, as | |
376 | * that's what we expose to the VFS. | |
377 | */ | |
378 | bytes = 1 << bbits; | |
379 | trim = 1; | |
380 | bitshift = 31; | |
ccd979bd MF |
381 | # endif |
382 | #endif | |
383 | ||
5a254031 MF |
384 | /* |
385 | * Trim by a whole cluster when we can actually approach the | |
386 | * on-disk limits. Otherwise we can overflow i_clusters when | |
387 | * an extent start is at the max offset. | |
388 | */ | |
389 | return (((unsigned long long)bytes) << bitshift) - trim; | |
ccd979bd MF |
390 | } |
391 | ||
392 | static int ocfs2_remount(struct super_block *sb, int *flags, char *data) | |
393 | { | |
394 | int incompat_features; | |
395 | int ret = 0; | |
c0123ade | 396 | struct mount_options parsed_options; |
ccd979bd MF |
397 | struct ocfs2_super *osb = OCFS2_SB(sb); |
398 | ||
c0123ade | 399 | if (!ocfs2_parse_options(sb, data, &parsed_options, 1)) { |
ccd979bd MF |
400 | ret = -EINVAL; |
401 | goto out; | |
402 | } | |
403 | ||
404 | if ((osb->s_mount_opt & OCFS2_MOUNT_HB_LOCAL) != | |
c0123ade | 405 | (parsed_options.mount_opt & OCFS2_MOUNT_HB_LOCAL)) { |
ccd979bd MF |
406 | ret = -EINVAL; |
407 | mlog(ML_ERROR, "Cannot change heartbeat mode on remount\n"); | |
408 | goto out; | |
409 | } | |
410 | ||
411 | if ((osb->s_mount_opt & OCFS2_MOUNT_DATA_WRITEBACK) != | |
c0123ade | 412 | (parsed_options.mount_opt & OCFS2_MOUNT_DATA_WRITEBACK)) { |
ccd979bd MF |
413 | ret = -EINVAL; |
414 | mlog(ML_ERROR, "Cannot change data mode on remount\n"); | |
415 | goto out; | |
416 | } | |
417 | ||
12462f1d JB |
418 | /* Probably don't want this on remount; it might |
419 | * mess with other nodes */ | |
420 | if (!(osb->s_mount_opt & OCFS2_MOUNT_INODE64) && | |
421 | (parsed_options.mount_opt & OCFS2_MOUNT_INODE64)) { | |
422 | ret = -EINVAL; | |
423 | mlog(ML_ERROR, "Cannot enable inode64 on remount\n"); | |
424 | goto out; | |
425 | } | |
426 | ||
ccd979bd MF |
427 | /* We're going to/from readonly mode. */ |
428 | if ((*flags & MS_RDONLY) != (sb->s_flags & MS_RDONLY)) { | |
429 | /* Lock here so the check of HARD_RO and the potential | |
430 | * setting of SOFT_RO is atomic. */ | |
431 | spin_lock(&osb->osb_lock); | |
432 | if (osb->osb_flags & OCFS2_OSB_HARD_RO) { | |
433 | mlog(ML_ERROR, "Remount on readonly device is forbidden.\n"); | |
434 | ret = -EROFS; | |
435 | goto unlock_osb; | |
436 | } | |
437 | ||
438 | if (*flags & MS_RDONLY) { | |
439 | mlog(0, "Going to ro mode.\n"); | |
440 | sb->s_flags |= MS_RDONLY; | |
441 | osb->osb_flags |= OCFS2_OSB_SOFT_RO; | |
442 | } else { | |
443 | mlog(0, "Making ro filesystem writeable.\n"); | |
444 | ||
445 | if (osb->osb_flags & OCFS2_OSB_ERROR_FS) { | |
446 | mlog(ML_ERROR, "Cannot remount RDWR " | |
447 | "filesystem due to previous errors.\n"); | |
448 | ret = -EROFS; | |
449 | goto unlock_osb; | |
450 | } | |
451 | incompat_features = OCFS2_HAS_RO_COMPAT_FEATURE(sb, ~OCFS2_FEATURE_RO_COMPAT_SUPP); | |
452 | if (incompat_features) { | |
453 | mlog(ML_ERROR, "Cannot remount RDWR because " | |
454 | "of unsupported optional features " | |
455 | "(%x).\n", incompat_features); | |
456 | ret = -EINVAL; | |
457 | goto unlock_osb; | |
458 | } | |
459 | sb->s_flags &= ~MS_RDONLY; | |
460 | osb->osb_flags &= ~OCFS2_OSB_SOFT_RO; | |
461 | } | |
462 | unlock_osb: | |
463 | spin_unlock(&osb->osb_lock); | |
464 | } | |
465 | ||
466 | if (!ret) { | |
ccd979bd MF |
467 | /* Only save off the new mount options in case of a successful |
468 | * remount. */ | |
c0123ade TY |
469 | osb->s_mount_opt = parsed_options.mount_opt; |
470 | osb->s_atime_quantum = parsed_options.atime_quantum; | |
471 | osb->preferred_slot = parsed_options.slot; | |
d147b3d6 MF |
472 | if (parsed_options.commit_interval) |
473 | osb->osb_commit_interval = parsed_options.commit_interval; | |
e001e796 MF |
474 | |
475 | if (!ocfs2_is_hard_readonly(osb)) | |
476 | ocfs2_set_journal_params(osb); | |
ccd979bd MF |
477 | } |
478 | out: | |
479 | return ret; | |
480 | } | |
481 | ||
482 | static int ocfs2_sb_probe(struct super_block *sb, | |
483 | struct buffer_head **bh, | |
484 | int *sector_size) | |
485 | { | |
bddb8eb3 | 486 | int status, tmpstat; |
ccd979bd MF |
487 | struct ocfs1_vol_disk_hdr *hdr; |
488 | struct ocfs2_dinode *di; | |
489 | int blksize; | |
490 | ||
491 | *bh = NULL; | |
492 | ||
493 | /* may be > 512 */ | |
494 | *sector_size = bdev_hardsect_size(sb->s_bdev); | |
495 | if (*sector_size > OCFS2_MAX_BLOCKSIZE) { | |
496 | mlog(ML_ERROR, "Hardware sector size too large: %d (max=%d)\n", | |
497 | *sector_size, OCFS2_MAX_BLOCKSIZE); | |
498 | status = -EINVAL; | |
499 | goto bail; | |
500 | } | |
501 | ||
502 | /* Can this really happen? */ | |
503 | if (*sector_size < OCFS2_MIN_BLOCKSIZE) | |
504 | *sector_size = OCFS2_MIN_BLOCKSIZE; | |
505 | ||
506 | /* check block zero for old format */ | |
507 | status = ocfs2_get_sector(sb, bh, 0, *sector_size); | |
508 | if (status < 0) { | |
509 | mlog_errno(status); | |
510 | goto bail; | |
511 | } | |
512 | hdr = (struct ocfs1_vol_disk_hdr *) (*bh)->b_data; | |
513 | if (hdr->major_version == OCFS1_MAJOR_VERSION) { | |
514 | mlog(ML_ERROR, "incompatible version: %u.%u\n", | |
515 | hdr->major_version, hdr->minor_version); | |
516 | status = -EINVAL; | |
517 | } | |
518 | if (memcmp(hdr->signature, OCFS1_VOLUME_SIGNATURE, | |
519 | strlen(OCFS1_VOLUME_SIGNATURE)) == 0) { | |
520 | mlog(ML_ERROR, "incompatible volume signature: %8s\n", | |
521 | hdr->signature); | |
522 | status = -EINVAL; | |
523 | } | |
524 | brelse(*bh); | |
525 | *bh = NULL; | |
526 | if (status < 0) { | |
527 | mlog(ML_ERROR, "This is an ocfs v1 filesystem which must be " | |
528 | "upgraded before mounting with ocfs v2\n"); | |
529 | goto bail; | |
530 | } | |
531 | ||
532 | /* | |
533 | * Now check at magic offset for 512, 1024, 2048, 4096 | |
534 | * blocksizes. 4096 is the maximum blocksize because it is | |
535 | * the minimum clustersize. | |
536 | */ | |
537 | status = -EINVAL; | |
538 | for (blksize = *sector_size; | |
539 | blksize <= OCFS2_MAX_BLOCKSIZE; | |
540 | blksize <<= 1) { | |
541 | tmpstat = ocfs2_get_sector(sb, bh, | |
542 | OCFS2_SUPER_BLOCK_BLKNO, | |
543 | blksize); | |
544 | if (tmpstat < 0) { | |
545 | status = tmpstat; | |
546 | mlog_errno(status); | |
547 | goto bail; | |
548 | } | |
549 | di = (struct ocfs2_dinode *) (*bh)->b_data; | |
550 | status = ocfs2_verify_volume(di, *bh, blksize); | |
551 | if (status >= 0) | |
552 | goto bail; | |
553 | brelse(*bh); | |
554 | *bh = NULL; | |
555 | if (status != -EAGAIN) | |
556 | break; | |
557 | } | |
558 | ||
559 | bail: | |
560 | return status; | |
561 | } | |
562 | ||
c271c5c2 SM |
563 | static int ocfs2_verify_heartbeat(struct ocfs2_super *osb) |
564 | { | |
565 | if (ocfs2_mount_local(osb)) { | |
566 | if (osb->s_mount_opt & OCFS2_MOUNT_HB_LOCAL) { | |
567 | mlog(ML_ERROR, "Cannot heartbeat on a locally " | |
568 | "mounted device.\n"); | |
569 | return -EINVAL; | |
570 | } | |
571 | } | |
572 | ||
b61817e1 JB |
573 | if (ocfs2_userspace_stack(osb)) { |
574 | if (osb->s_mount_opt & OCFS2_MOUNT_HB_LOCAL) { | |
575 | mlog(ML_ERROR, "Userspace stack expected, but " | |
576 | "o2cb heartbeat arguments passed to mount\n"); | |
577 | return -EINVAL; | |
578 | } | |
579 | } | |
580 | ||
c271c5c2 | 581 | if (!(osb->s_mount_opt & OCFS2_MOUNT_HB_LOCAL)) { |
b61817e1 JB |
582 | if (!ocfs2_mount_local(osb) && !ocfs2_is_hard_readonly(osb) && |
583 | !ocfs2_userspace_stack(osb)) { | |
c271c5c2 SM |
584 | mlog(ML_ERROR, "Heartbeat has to be started to mount " |
585 | "a read-write clustered device.\n"); | |
586 | return -EINVAL; | |
587 | } | |
588 | } | |
589 | ||
590 | return 0; | |
591 | } | |
592 | ||
b61817e1 JB |
593 | /* |
594 | * If we're using a userspace stack, mount should have passed | |
595 | * a name that matches the disk. If not, mount should not | |
596 | * have passed a stack. | |
597 | */ | |
598 | static int ocfs2_verify_userspace_stack(struct ocfs2_super *osb, | |
599 | struct mount_options *mopt) | |
600 | { | |
601 | if (!ocfs2_userspace_stack(osb) && mopt->cluster_stack[0]) { | |
602 | mlog(ML_ERROR, | |
603 | "cluster stack passed to mount, but this filesystem " | |
604 | "does not support it\n"); | |
605 | return -EINVAL; | |
606 | } | |
607 | ||
608 | if (ocfs2_userspace_stack(osb) && | |
609 | strncmp(osb->osb_cluster_stack, mopt->cluster_stack, | |
610 | OCFS2_STACK_LABEL_LEN)) { | |
611 | mlog(ML_ERROR, | |
612 | "cluster stack passed to mount (\"%s\") does not " | |
613 | "match the filesystem (\"%s\")\n", | |
614 | mopt->cluster_stack, | |
615 | osb->osb_cluster_stack); | |
616 | return -EINVAL; | |
617 | } | |
618 | ||
619 | return 0; | |
620 | } | |
621 | ||
ccd979bd MF |
622 | static int ocfs2_fill_super(struct super_block *sb, void *data, int silent) |
623 | { | |
624 | struct dentry *root; | |
625 | int status, sector_size; | |
c0123ade | 626 | struct mount_options parsed_options; |
ccd979bd MF |
627 | struct inode *inode = NULL; |
628 | struct ocfs2_super *osb = NULL; | |
629 | struct buffer_head *bh = NULL; | |
c271c5c2 | 630 | char nodestr[8]; |
ccd979bd MF |
631 | |
632 | mlog_entry("%p, %p, %i", sb, data, silent); | |
633 | ||
c0123ade | 634 | if (!ocfs2_parse_options(sb, data, &parsed_options, 0)) { |
ccd979bd MF |
635 | status = -EINVAL; |
636 | goto read_super_error; | |
637 | } | |
638 | ||
639 | /* probe for superblock */ | |
640 | status = ocfs2_sb_probe(sb, &bh, §or_size); | |
641 | if (status < 0) { | |
642 | mlog(ML_ERROR, "superblock probe failed!\n"); | |
643 | goto read_super_error; | |
644 | } | |
645 | ||
646 | status = ocfs2_initialize_super(sb, bh, sector_size); | |
647 | osb = OCFS2_SB(sb); | |
648 | if (status < 0) { | |
649 | mlog_errno(status); | |
650 | goto read_super_error; | |
651 | } | |
652 | brelse(bh); | |
653 | bh = NULL; | |
c0123ade TY |
654 | osb->s_mount_opt = parsed_options.mount_opt; |
655 | osb->s_atime_quantum = parsed_options.atime_quantum; | |
656 | osb->preferred_slot = parsed_options.slot; | |
d147b3d6 | 657 | osb->osb_commit_interval = parsed_options.commit_interval; |
9c7af40b MF |
658 | osb->local_alloc_default_bits = ocfs2_megabytes_to_clusters(sb, parsed_options.localalloc_opt); |
659 | osb->local_alloc_bits = osb->local_alloc_default_bits; | |
ccd979bd | 660 | |
b61817e1 JB |
661 | status = ocfs2_verify_userspace_stack(osb, &parsed_options); |
662 | if (status) | |
663 | goto read_super_error; | |
664 | ||
ccd979bd MF |
665 | sb->s_magic = OCFS2_SUPER_MAGIC; |
666 | ||
667 | /* Hard readonly mode only if: bdev_read_only, MS_RDONLY, | |
668 | * heartbeat=none */ | |
669 | if (bdev_read_only(sb->s_bdev)) { | |
670 | if (!(sb->s_flags & MS_RDONLY)) { | |
671 | status = -EACCES; | |
672 | mlog(ML_ERROR, "Readonly device detected but readonly " | |
673 | "mount was not specified.\n"); | |
674 | goto read_super_error; | |
675 | } | |
676 | ||
677 | /* You should not be able to start a local heartbeat | |
678 | * on a readonly device. */ | |
679 | if (osb->s_mount_opt & OCFS2_MOUNT_HB_LOCAL) { | |
680 | status = -EROFS; | |
681 | mlog(ML_ERROR, "Local heartbeat specified on readonly " | |
682 | "device.\n"); | |
683 | goto read_super_error; | |
684 | } | |
685 | ||
686 | status = ocfs2_check_journals_nolocks(osb); | |
687 | if (status < 0) { | |
688 | if (status == -EROFS) | |
689 | mlog(ML_ERROR, "Recovery required on readonly " | |
690 | "file system, but write access is " | |
691 | "unavailable.\n"); | |
692 | else | |
693 | mlog_errno(status); | |
694 | goto read_super_error; | |
695 | } | |
696 | ||
697 | ocfs2_set_ro_flag(osb, 1); | |
698 | ||
699 | printk(KERN_NOTICE "Readonly device detected. No cluster " | |
700 | "services will be utilized for this mount. Recovery " | |
701 | "will be skipped.\n"); | |
702 | } | |
703 | ||
704 | if (!ocfs2_is_hard_readonly(osb)) { | |
ccd979bd MF |
705 | if (sb->s_flags & MS_RDONLY) |
706 | ocfs2_set_ro_flag(osb, 0); | |
707 | } | |
708 | ||
c271c5c2 SM |
709 | status = ocfs2_verify_heartbeat(osb); |
710 | if (status < 0) { | |
711 | mlog_errno(status); | |
712 | goto read_super_error; | |
713 | } | |
714 | ||
ccd979bd MF |
715 | osb->osb_debug_root = debugfs_create_dir(osb->uuid_str, |
716 | ocfs2_debugfs_root); | |
717 | if (!osb->osb_debug_root) { | |
718 | status = -EINVAL; | |
719 | mlog(ML_ERROR, "Unable to create per-mount debugfs root.\n"); | |
720 | goto read_super_error; | |
721 | } | |
722 | ||
723 | status = ocfs2_mount_volume(sb); | |
724 | if (osb->root_inode) | |
725 | inode = igrab(osb->root_inode); | |
726 | ||
727 | if (status < 0) | |
728 | goto read_super_error; | |
729 | ||
730 | if (!inode) { | |
731 | status = -EIO; | |
732 | mlog_errno(status); | |
733 | goto read_super_error; | |
734 | } | |
735 | ||
736 | root = d_alloc_root(inode); | |
737 | if (!root) { | |
738 | status = -ENOMEM; | |
739 | mlog_errno(status); | |
740 | goto read_super_error; | |
741 | } | |
742 | ||
743 | sb->s_root = root; | |
744 | ||
745 | ocfs2_complete_mount_recovery(osb); | |
746 | ||
c271c5c2 SM |
747 | if (ocfs2_mount_local(osb)) |
748 | snprintf(nodestr, sizeof(nodestr), "local"); | |
749 | else | |
19fdb624 | 750 | snprintf(nodestr, sizeof(nodestr), "%u", osb->node_num); |
c271c5c2 SM |
751 | |
752 | printk(KERN_INFO "ocfs2: Mounting device (%s) on (node %s, slot %d) " | |
781ee3e2 | 753 | "with %s data mode.\n", |
c271c5c2 | 754 | osb->dev_str, nodestr, osb->slot_num, |
ccd979bd MF |
755 | osb->s_mount_opt & OCFS2_MOUNT_DATA_WRITEBACK ? "writeback" : |
756 | "ordered"); | |
757 | ||
758 | atomic_set(&osb->vol_state, VOLUME_MOUNTED); | |
759 | wake_up(&osb->osb_mount_event); | |
760 | ||
761 | mlog_exit(status); | |
762 | return status; | |
763 | ||
764 | read_super_error: | |
765 | if (bh != NULL) | |
766 | brelse(bh); | |
767 | ||
768 | if (inode) | |
769 | iput(inode); | |
770 | ||
771 | if (osb) { | |
772 | atomic_set(&osb->vol_state, VOLUME_DISABLED); | |
773 | wake_up(&osb->osb_mount_event); | |
774 | ocfs2_dismount_volume(sb, 1); | |
775 | } | |
776 | ||
777 | mlog_exit(status); | |
778 | return status; | |
779 | } | |
780 | ||
454e2398 DH |
781 | static int ocfs2_get_sb(struct file_system_type *fs_type, |
782 | int flags, | |
783 | const char *dev_name, | |
784 | void *data, | |
785 | struct vfsmount *mnt) | |
ccd979bd | 786 | { |
454e2398 DH |
787 | return get_sb_bdev(fs_type, flags, dev_name, data, ocfs2_fill_super, |
788 | mnt); | |
ccd979bd MF |
789 | } |
790 | ||
791 | static struct file_system_type ocfs2_fs_type = { | |
792 | .owner = THIS_MODULE, | |
793 | .name = "ocfs2", | |
794 | .get_sb = ocfs2_get_sb, /* is this called when we mount | |
795 | * the fs? */ | |
796 | .kill_sb = kill_block_super, /* set to the generic one | |
797 | * right now, but do we | |
798 | * need to change that? */ | |
1ba9da2f | 799 | .fs_flags = FS_REQUIRES_DEV|FS_RENAME_DOES_D_MOVE, |
ccd979bd MF |
800 | .next = NULL |
801 | }; | |
802 | ||
803 | static int ocfs2_parse_options(struct super_block *sb, | |
804 | char *options, | |
c0123ade | 805 | struct mount_options *mopt, |
ccd979bd MF |
806 | int is_remount) |
807 | { | |
808 | int status; | |
809 | char *p; | |
810 | ||
811 | mlog_entry("remount: %d, options: \"%s\"\n", is_remount, | |
812 | options ? options : "(none)"); | |
813 | ||
d147b3d6 | 814 | mopt->commit_interval = 0; |
c0123ade TY |
815 | mopt->mount_opt = 0; |
816 | mopt->atime_quantum = OCFS2_DEFAULT_ATIME_QUANTUM; | |
817 | mopt->slot = OCFS2_INVALID_SLOT; | |
2fbe8d1e | 818 | mopt->localalloc_opt = OCFS2_DEFAULT_LOCAL_ALLOC_SIZE; |
b61817e1 | 819 | mopt->cluster_stack[0] = '\0'; |
ccd979bd MF |
820 | |
821 | if (!options) { | |
822 | status = 1; | |
823 | goto bail; | |
824 | } | |
825 | ||
826 | while ((p = strsep(&options, ",")) != NULL) { | |
827 | int token, option; | |
828 | substring_t args[MAX_OPT_ARGS]; | |
829 | ||
830 | if (!*p) | |
831 | continue; | |
832 | ||
833 | token = match_token(p, tokens, args); | |
834 | switch (token) { | |
835 | case Opt_hb_local: | |
c0123ade | 836 | mopt->mount_opt |= OCFS2_MOUNT_HB_LOCAL; |
ccd979bd MF |
837 | break; |
838 | case Opt_hb_none: | |
c0123ade | 839 | mopt->mount_opt &= ~OCFS2_MOUNT_HB_LOCAL; |
ccd979bd MF |
840 | break; |
841 | case Opt_barrier: | |
842 | if (match_int(&args[0], &option)) { | |
843 | status = 0; | |
844 | goto bail; | |
845 | } | |
846 | if (option) | |
c0123ade | 847 | mopt->mount_opt |= OCFS2_MOUNT_BARRIER; |
ccd979bd | 848 | else |
c0123ade | 849 | mopt->mount_opt &= ~OCFS2_MOUNT_BARRIER; |
ccd979bd MF |
850 | break; |
851 | case Opt_intr: | |
c0123ade | 852 | mopt->mount_opt &= ~OCFS2_MOUNT_NOINTR; |
ccd979bd MF |
853 | break; |
854 | case Opt_nointr: | |
c0123ade | 855 | mopt->mount_opt |= OCFS2_MOUNT_NOINTR; |
ccd979bd MF |
856 | break; |
857 | case Opt_err_panic: | |
c0123ade | 858 | mopt->mount_opt |= OCFS2_MOUNT_ERRORS_PANIC; |
ccd979bd MF |
859 | break; |
860 | case Opt_err_ro: | |
c0123ade | 861 | mopt->mount_opt &= ~OCFS2_MOUNT_ERRORS_PANIC; |
ccd979bd MF |
862 | break; |
863 | case Opt_data_ordered: | |
c0123ade | 864 | mopt->mount_opt &= ~OCFS2_MOUNT_DATA_WRITEBACK; |
ccd979bd MF |
865 | break; |
866 | case Opt_data_writeback: | |
c0123ade | 867 | mopt->mount_opt |= OCFS2_MOUNT_DATA_WRITEBACK; |
ccd979bd | 868 | break; |
cf1d6c76 TY |
869 | case Opt_user_xattr: |
870 | mopt->mount_opt &= ~OCFS2_MOUNT_NOUSERXATTR; | |
871 | break; | |
872 | case Opt_nouser_xattr: | |
873 | mopt->mount_opt |= OCFS2_MOUNT_NOUSERXATTR; | |
874 | break; | |
7f1a37e3 TY |
875 | case Opt_atime_quantum: |
876 | if (match_int(&args[0], &option)) { | |
877 | status = 0; | |
878 | goto bail; | |
879 | } | |
880 | if (option >= 0) | |
c0123ade | 881 | mopt->atime_quantum = option; |
7f1a37e3 | 882 | break; |
baf4661a SM |
883 | case Opt_slot: |
884 | option = 0; | |
885 | if (match_int(&args[0], &option)) { | |
886 | status = 0; | |
887 | goto bail; | |
888 | } | |
889 | if (option) | |
c0123ade | 890 | mopt->slot = (s16)option; |
baf4661a | 891 | break; |
d147b3d6 MF |
892 | case Opt_commit: |
893 | option = 0; | |
894 | if (match_int(&args[0], &option)) { | |
895 | status = 0; | |
896 | goto bail; | |
897 | } | |
898 | if (option < 0) | |
899 | return 0; | |
900 | if (option == 0) | |
2b4e30fb | 901 | option = JBD2_DEFAULT_MAX_COMMIT_AGE; |
d147b3d6 MF |
902 | mopt->commit_interval = HZ * option; |
903 | break; | |
2fbe8d1e SM |
904 | case Opt_localalloc: |
905 | option = 0; | |
906 | if (match_int(&args[0], &option)) { | |
907 | status = 0; | |
908 | goto bail; | |
909 | } | |
910 | if (option >= 0 && (option <= ocfs2_local_alloc_size(sb) * 8)) | |
911 | mopt->localalloc_opt = option; | |
912 | break; | |
53fc622b MF |
913 | case Opt_localflocks: |
914 | /* | |
915 | * Changing this during remount could race | |
916 | * flock() requests, or "unbalance" existing | |
917 | * ones (e.g., a lock is taken in one mode but | |
918 | * dropped in the other). If users care enough | |
919 | * to flip locking modes during remount, we | |
920 | * could add a "local" flag to individual | |
921 | * flock structures for proper tracking of | |
922 | * state. | |
923 | */ | |
924 | if (!is_remount) | |
925 | mopt->mount_opt |= OCFS2_MOUNT_LOCALFLOCKS; | |
926 | break; | |
b61817e1 JB |
927 | case Opt_stack: |
928 | /* Check both that the option we were passed | |
929 | * is of the right length and that it is a proper | |
930 | * string of the right length. | |
931 | */ | |
932 | if (((args[0].to - args[0].from) != | |
933 | OCFS2_STACK_LABEL_LEN) || | |
934 | (strnlen(args[0].from, | |
935 | OCFS2_STACK_LABEL_LEN) != | |
936 | OCFS2_STACK_LABEL_LEN)) { | |
937 | mlog(ML_ERROR, | |
938 | "Invalid cluster_stack option\n"); | |
939 | status = 0; | |
940 | goto bail; | |
941 | } | |
942 | memcpy(mopt->cluster_stack, args[0].from, | |
943 | OCFS2_STACK_LABEL_LEN); | |
944 | mopt->cluster_stack[OCFS2_STACK_LABEL_LEN] = '\0'; | |
945 | break; | |
12462f1d JB |
946 | case Opt_inode64: |
947 | mopt->mount_opt |= OCFS2_MOUNT_INODE64; | |
948 | break; | |
ccd979bd MF |
949 | default: |
950 | mlog(ML_ERROR, | |
951 | "Unrecognized mount option \"%s\" " | |
952 | "or missing value\n", p); | |
953 | status = 0; | |
954 | goto bail; | |
955 | } | |
956 | } | |
957 | ||
958 | status = 1; | |
959 | ||
960 | bail: | |
961 | mlog_exit(status); | |
962 | return status; | |
963 | } | |
964 | ||
d550071c SM |
965 | static int ocfs2_show_options(struct seq_file *s, struct vfsmount *mnt) |
966 | { | |
967 | struct ocfs2_super *osb = OCFS2_SB(mnt->mnt_sb); | |
968 | unsigned long opts = osb->s_mount_opt; | |
ebcee4b5 | 969 | unsigned int local_alloc_megs; |
d550071c SM |
970 | |
971 | if (opts & OCFS2_MOUNT_HB_LOCAL) | |
972 | seq_printf(s, ",_netdev,heartbeat=local"); | |
973 | else | |
974 | seq_printf(s, ",heartbeat=none"); | |
975 | ||
976 | if (opts & OCFS2_MOUNT_NOINTR) | |
977 | seq_printf(s, ",nointr"); | |
978 | ||
979 | if (opts & OCFS2_MOUNT_DATA_WRITEBACK) | |
980 | seq_printf(s, ",data=writeback"); | |
981 | else | |
982 | seq_printf(s, ",data=ordered"); | |
983 | ||
984 | if (opts & OCFS2_MOUNT_BARRIER) | |
985 | seq_printf(s, ",barrier=1"); | |
986 | ||
987 | if (opts & OCFS2_MOUNT_ERRORS_PANIC) | |
988 | seq_printf(s, ",errors=panic"); | |
989 | else | |
990 | seq_printf(s, ",errors=remount-ro"); | |
991 | ||
992 | if (osb->preferred_slot != OCFS2_INVALID_SLOT) | |
993 | seq_printf(s, ",preferred_slot=%d", osb->preferred_slot); | |
994 | ||
995 | if (osb->s_atime_quantum != OCFS2_DEFAULT_ATIME_QUANTUM) | |
996 | seq_printf(s, ",atime_quantum=%u", osb->s_atime_quantum); | |
997 | ||
d147b3d6 MF |
998 | if (osb->osb_commit_interval) |
999 | seq_printf(s, ",commit=%u", | |
1000 | (unsigned) (osb->osb_commit_interval / HZ)); | |
1001 | ||
ebcee4b5 MF |
1002 | local_alloc_megs = osb->local_alloc_bits >> (20 - osb->s_clustersize_bits); |
1003 | if (local_alloc_megs != OCFS2_DEFAULT_LOCAL_ALLOC_SIZE) | |
1004 | seq_printf(s, ",localalloc=%d", local_alloc_megs); | |
2fbe8d1e | 1005 | |
53fc622b MF |
1006 | if (opts & OCFS2_MOUNT_LOCALFLOCKS) |
1007 | seq_printf(s, ",localflocks,"); | |
1008 | ||
b61817e1 JB |
1009 | if (osb->osb_cluster_stack[0]) |
1010 | seq_printf(s, ",cluster_stack=%.*s", OCFS2_STACK_LABEL_LEN, | |
1011 | osb->osb_cluster_stack); | |
1012 | ||
12462f1d JB |
1013 | if (opts & OCFS2_MOUNT_INODE64) |
1014 | seq_printf(s, ",inode64"); | |
1015 | ||
d550071c SM |
1016 | return 0; |
1017 | } | |
1018 | ||
ccd979bd MF |
1019 | static int __init ocfs2_init(void) |
1020 | { | |
1021 | int status; | |
1022 | ||
1023 | mlog_entry_void(); | |
1024 | ||
1025 | ocfs2_print_version(); | |
1026 | ||
ccd979bd MF |
1027 | status = init_ocfs2_uptodate_cache(); |
1028 | if (status < 0) { | |
1029 | mlog_errno(status); | |
1030 | goto leave; | |
1031 | } | |
1032 | ||
1033 | status = ocfs2_initialize_mem_caches(); | |
1034 | if (status < 0) { | |
1035 | mlog_errno(status); | |
1036 | goto leave; | |
1037 | } | |
1038 | ||
1039 | ocfs2_wq = create_singlethread_workqueue("ocfs2_wq"); | |
1040 | if (!ocfs2_wq) { | |
1041 | status = -ENOMEM; | |
1042 | goto leave; | |
1043 | } | |
1044 | ||
ccd979bd MF |
1045 | ocfs2_debugfs_root = debugfs_create_dir("ocfs2", NULL); |
1046 | if (!ocfs2_debugfs_root) { | |
1047 | status = -EFAULT; | |
1048 | mlog(ML_ERROR, "Unable to create ocfs2 debugfs root.\n"); | |
1049 | } | |
1050 | ||
63e0c48a JB |
1051 | ocfs2_set_locking_protocol(); |
1052 | ||
ccd979bd MF |
1053 | leave: |
1054 | if (status < 0) { | |
1055 | ocfs2_free_mem_caches(); | |
1056 | exit_ocfs2_uptodate_cache(); | |
ccd979bd MF |
1057 | } |
1058 | ||
1059 | mlog_exit(status); | |
1060 | ||
1061 | if (status >= 0) { | |
1062 | return register_filesystem(&ocfs2_fs_type); | |
1063 | } else | |
1064 | return -1; | |
1065 | } | |
1066 | ||
1067 | static void __exit ocfs2_exit(void) | |
1068 | { | |
1069 | mlog_entry_void(); | |
1070 | ||
1071 | if (ocfs2_wq) { | |
1072 | flush_workqueue(ocfs2_wq); | |
1073 | destroy_workqueue(ocfs2_wq); | |
1074 | } | |
1075 | ||
1076 | debugfs_remove(ocfs2_debugfs_root); | |
1077 | ||
1078 | ocfs2_free_mem_caches(); | |
1079 | ||
1080 | unregister_filesystem(&ocfs2_fs_type); | |
1081 | ||
ccd979bd MF |
1082 | exit_ocfs2_uptodate_cache(); |
1083 | ||
1084 | mlog_exit_void(); | |
1085 | } | |
1086 | ||
1087 | static void ocfs2_put_super(struct super_block *sb) | |
1088 | { | |
1089 | mlog_entry("(0x%p)\n", sb); | |
1090 | ||
1091 | ocfs2_sync_blockdev(sb); | |
1092 | ocfs2_dismount_volume(sb, 0); | |
1093 | ||
1094 | mlog_exit_void(); | |
1095 | } | |
1096 | ||
726c3342 | 1097 | static int ocfs2_statfs(struct dentry *dentry, struct kstatfs *buf) |
ccd979bd MF |
1098 | { |
1099 | struct ocfs2_super *osb; | |
1100 | u32 numbits, freebits; | |
1101 | int status; | |
1102 | struct ocfs2_dinode *bm_lock; | |
1103 | struct buffer_head *bh = NULL; | |
1104 | struct inode *inode = NULL; | |
1105 | ||
726c3342 | 1106 | mlog_entry("(%p, %p)\n", dentry->d_sb, buf); |
ccd979bd | 1107 | |
726c3342 | 1108 | osb = OCFS2_SB(dentry->d_sb); |
ccd979bd MF |
1109 | |
1110 | inode = ocfs2_get_system_file_inode(osb, | |
1111 | GLOBAL_BITMAP_SYSTEM_INODE, | |
1112 | OCFS2_INVALID_SLOT); | |
1113 | if (!inode) { | |
1114 | mlog(ML_ERROR, "failed to get bitmap inode\n"); | |
1115 | status = -EIO; | |
1116 | goto bail; | |
1117 | } | |
1118 | ||
e63aecb6 | 1119 | status = ocfs2_inode_lock(inode, &bh, 0); |
ccd979bd MF |
1120 | if (status < 0) { |
1121 | mlog_errno(status); | |
1122 | goto bail; | |
1123 | } | |
1124 | ||
1125 | bm_lock = (struct ocfs2_dinode *) bh->b_data; | |
1126 | ||
1127 | numbits = le32_to_cpu(bm_lock->id1.bitmap1.i_total); | |
1128 | freebits = numbits - le32_to_cpu(bm_lock->id1.bitmap1.i_used); | |
1129 | ||
1130 | buf->f_type = OCFS2_SUPER_MAGIC; | |
726c3342 | 1131 | buf->f_bsize = dentry->d_sb->s_blocksize; |
ccd979bd MF |
1132 | buf->f_namelen = OCFS2_MAX_FILENAME_LEN; |
1133 | buf->f_blocks = ((sector_t) numbits) * | |
1134 | (osb->s_clustersize >> osb->sb->s_blocksize_bits); | |
1135 | buf->f_bfree = ((sector_t) freebits) * | |
1136 | (osb->s_clustersize >> osb->sb->s_blocksize_bits); | |
1137 | buf->f_bavail = buf->f_bfree; | |
1138 | buf->f_files = numbits; | |
1139 | buf->f_ffree = freebits; | |
1140 | ||
1141 | brelse(bh); | |
1142 | ||
e63aecb6 | 1143 | ocfs2_inode_unlock(inode, 0); |
ccd979bd MF |
1144 | status = 0; |
1145 | bail: | |
1146 | if (inode) | |
1147 | iput(inode); | |
1148 | ||
1149 | mlog_exit(status); | |
1150 | ||
1151 | return status; | |
1152 | } | |
1153 | ||
51cc5068 | 1154 | static void ocfs2_inode_init_once(void *data) |
ccd979bd MF |
1155 | { |
1156 | struct ocfs2_inode_info *oi = data; | |
1157 | ||
a35afb83 CL |
1158 | oi->ip_flags = 0; |
1159 | oi->ip_open_count = 0; | |
1160 | spin_lock_init(&oi->ip_lock); | |
1161 | ocfs2_extent_map_init(&oi->vfs_inode); | |
1162 | INIT_LIST_HEAD(&oi->ip_io_markers); | |
1163 | oi->ip_created_trans = 0; | |
1164 | oi->ip_last_trans = 0; | |
1165 | oi->ip_dir_start_lookup = 0; | |
ccd979bd | 1166 | |
a35afb83 | 1167 | init_rwsem(&oi->ip_alloc_sem); |
cf1d6c76 | 1168 | init_rwsem(&oi->ip_xattr_sem); |
a35afb83 | 1169 | mutex_init(&oi->ip_io_mutex); |
ccd979bd | 1170 | |
a35afb83 CL |
1171 | oi->ip_blkno = 0ULL; |
1172 | oi->ip_clusters = 0; | |
ccd979bd | 1173 | |
a35afb83 | 1174 | ocfs2_lock_res_init_once(&oi->ip_rw_lockres); |
e63aecb6 | 1175 | ocfs2_lock_res_init_once(&oi->ip_inode_lockres); |
a35afb83 | 1176 | ocfs2_lock_res_init_once(&oi->ip_open_lockres); |
ccd979bd | 1177 | |
a35afb83 | 1178 | ocfs2_metadata_cache_init(&oi->vfs_inode); |
ccd979bd | 1179 | |
a35afb83 | 1180 | inode_init_once(&oi->vfs_inode); |
ccd979bd MF |
1181 | } |
1182 | ||
1183 | static int ocfs2_initialize_mem_caches(void) | |
1184 | { | |
1185 | ocfs2_inode_cachep = kmem_cache_create("ocfs2_inode_cache", | |
fffb60f9 PJ |
1186 | sizeof(struct ocfs2_inode_info), |
1187 | 0, | |
1188 | (SLAB_HWCACHE_ALIGN|SLAB_RECLAIM_ACCOUNT| | |
1189 | SLAB_MEM_SPREAD), | |
20c2df83 | 1190 | ocfs2_inode_init_once); |
ccd979bd MF |
1191 | if (!ocfs2_inode_cachep) |
1192 | return -ENOMEM; | |
1193 | ||
ccd979bd MF |
1194 | return 0; |
1195 | } | |
1196 | ||
1197 | static void ocfs2_free_mem_caches(void) | |
1198 | { | |
1199 | if (ocfs2_inode_cachep) | |
1200 | kmem_cache_destroy(ocfs2_inode_cachep); | |
ccd979bd MF |
1201 | |
1202 | ocfs2_inode_cachep = NULL; | |
ccd979bd MF |
1203 | } |
1204 | ||
1205 | static int ocfs2_get_sector(struct super_block *sb, | |
1206 | struct buffer_head **bh, | |
1207 | int block, | |
1208 | int sect_size) | |
1209 | { | |
1210 | if (!sb_set_blocksize(sb, sect_size)) { | |
1211 | mlog(ML_ERROR, "unable to set blocksize\n"); | |
1212 | return -EIO; | |
1213 | } | |
1214 | ||
1215 | *bh = sb_getblk(sb, block); | |
1216 | if (!*bh) { | |
1217 | mlog_errno(-EIO); | |
1218 | return -EIO; | |
1219 | } | |
1220 | lock_buffer(*bh); | |
1221 | if (!buffer_dirty(*bh)) | |
1222 | clear_buffer_uptodate(*bh); | |
1223 | unlock_buffer(*bh); | |
1224 | ll_rw_block(READ, 1, bh); | |
1225 | wait_on_buffer(*bh); | |
1226 | return 0; | |
1227 | } | |
1228 | ||
ccd979bd MF |
1229 | static int ocfs2_mount_volume(struct super_block *sb) |
1230 | { | |
1231 | int status = 0; | |
1232 | int unlock_super = 0; | |
1233 | struct ocfs2_super *osb = OCFS2_SB(sb); | |
1234 | ||
1235 | mlog_entry_void(); | |
1236 | ||
1237 | if (ocfs2_is_hard_readonly(osb)) | |
1238 | goto leave; | |
1239 | ||
ccd979bd MF |
1240 | status = ocfs2_dlm_init(osb); |
1241 | if (status < 0) { | |
1242 | mlog_errno(status); | |
1243 | goto leave; | |
1244 | } | |
1245 | ||
ccd979bd MF |
1246 | status = ocfs2_super_lock(osb, 1); |
1247 | if (status < 0) { | |
1248 | mlog_errno(status); | |
1249 | goto leave; | |
1250 | } | |
1251 | unlock_super = 1; | |
1252 | ||
1253 | /* This will load up the node map and add ourselves to it. */ | |
1254 | status = ocfs2_find_slot(osb); | |
1255 | if (status < 0) { | |
1256 | mlog_errno(status); | |
1257 | goto leave; | |
1258 | } | |
1259 | ||
ccd979bd MF |
1260 | /* load all node-local system inodes */ |
1261 | status = ocfs2_init_local_system_inodes(osb); | |
1262 | if (status < 0) { | |
1263 | mlog_errno(status); | |
1264 | goto leave; | |
1265 | } | |
1266 | ||
1267 | status = ocfs2_check_volume(osb); | |
1268 | if (status < 0) { | |
1269 | mlog_errno(status); | |
1270 | goto leave; | |
1271 | } | |
1272 | ||
1273 | status = ocfs2_truncate_log_init(osb); | |
1274 | if (status < 0) { | |
1275 | mlog_errno(status); | |
1276 | goto leave; | |
1277 | } | |
1278 | ||
c271c5c2 SM |
1279 | if (ocfs2_mount_local(osb)) |
1280 | goto leave; | |
1281 | ||
ccd979bd MF |
1282 | leave: |
1283 | if (unlock_super) | |
1284 | ocfs2_super_unlock(osb, 1); | |
1285 | ||
1286 | mlog_exit(status); | |
1287 | return status; | |
1288 | } | |
1289 | ||
ccd979bd MF |
1290 | static void ocfs2_dismount_volume(struct super_block *sb, int mnt_err) |
1291 | { | |
286eaa95 | 1292 | int tmp, hangup_needed = 0; |
ccd979bd | 1293 | struct ocfs2_super *osb = NULL; |
c271c5c2 | 1294 | char nodestr[8]; |
ccd979bd MF |
1295 | |
1296 | mlog_entry("(0x%p)\n", sb); | |
1297 | ||
1298 | BUG_ON(!sb); | |
1299 | osb = OCFS2_SB(sb); | |
1300 | BUG_ON(!osb); | |
1301 | ||
1302 | ocfs2_shutdown_local_alloc(osb); | |
1303 | ||
1304 | ocfs2_truncate_log_shutdown(osb); | |
1305 | ||
553abd04 JB |
1306 | /* This will disable recovery and flush any recovery work. */ |
1307 | ocfs2_recovery_exit(osb); | |
ccd979bd MF |
1308 | |
1309 | ocfs2_journal_shutdown(osb); | |
1310 | ||
1311 | ocfs2_sync_blockdev(sb); | |
1312 | ||
4670c46d JB |
1313 | /* No cluster connection means we've failed during mount, so skip |
1314 | * all the steps which depended on that to complete. */ | |
1315 | if (osb->cconn) { | |
ccd979bd MF |
1316 | tmp = ocfs2_super_lock(osb, 1); |
1317 | if (tmp < 0) { | |
1318 | mlog_errno(tmp); | |
1319 | return; | |
1320 | } | |
19b613d4 | 1321 | } |
ccd979bd | 1322 | |
19b613d4 MF |
1323 | if (osb->slot_num != OCFS2_INVALID_SLOT) |
1324 | ocfs2_put_slot(osb); | |
ccd979bd | 1325 | |
4670c46d | 1326 | if (osb->cconn) |
ccd979bd | 1327 | ocfs2_super_unlock(osb, 1); |
ccd979bd MF |
1328 | |
1329 | ocfs2_release_system_inodes(osb); | |
1330 | ||
6953b4c0 | 1331 | /* |
6953b4c0 JB |
1332 | * If we're dismounting due to mount error, mount.ocfs2 will clean |
1333 | * up heartbeat. If we're a local mount, there is no heartbeat. | |
1334 | * If we failed before we got a uuid_str yet, we can't stop | |
1335 | * heartbeat. Otherwise, do it. | |
1336 | */ | |
1337 | if (!mnt_err && !ocfs2_mount_local(osb) && osb->uuid_str) | |
286eaa95 JB |
1338 | hangup_needed = 1; |
1339 | ||
1340 | if (osb->cconn) | |
1341 | ocfs2_dlm_shutdown(osb, hangup_needed); | |
1342 | ||
1343 | debugfs_remove(osb->osb_debug_root); | |
1344 | ||
1345 | if (hangup_needed) | |
6953b4c0 | 1346 | ocfs2_cluster_hangup(osb->uuid_str, strlen(osb->uuid_str)); |
ccd979bd MF |
1347 | |
1348 | atomic_set(&osb->vol_state, VOLUME_DISMOUNTED); | |
1349 | ||
c271c5c2 SM |
1350 | if (ocfs2_mount_local(osb)) |
1351 | snprintf(nodestr, sizeof(nodestr), "local"); | |
1352 | else | |
19fdb624 | 1353 | snprintf(nodestr, sizeof(nodestr), "%u", osb->node_num); |
c271c5c2 SM |
1354 | |
1355 | printk(KERN_INFO "ocfs2: Unmounting device (%s) on (node %s)\n", | |
1356 | osb->dev_str, nodestr); | |
ccd979bd MF |
1357 | |
1358 | ocfs2_delete_osb(osb); | |
1359 | kfree(osb); | |
1360 | sb->s_dev = 0; | |
1361 | sb->s_fs_info = NULL; | |
1362 | } | |
1363 | ||
1364 | static int ocfs2_setup_osb_uuid(struct ocfs2_super *osb, const unsigned char *uuid, | |
1365 | unsigned uuid_bytes) | |
1366 | { | |
1367 | int i, ret; | |
1368 | char *ptr; | |
1369 | ||
1370 | BUG_ON(uuid_bytes != OCFS2_VOL_UUID_LEN); | |
1371 | ||
cd861280 | 1372 | osb->uuid_str = kzalloc(OCFS2_VOL_UUID_LEN * 2 + 1, GFP_KERNEL); |
ccd979bd MF |
1373 | if (osb->uuid_str == NULL) |
1374 | return -ENOMEM; | |
1375 | ||
ccd979bd MF |
1376 | for (i = 0, ptr = osb->uuid_str; i < OCFS2_VOL_UUID_LEN; i++) { |
1377 | /* print with null */ | |
1378 | ret = snprintf(ptr, 3, "%02X", uuid[i]); | |
1379 | if (ret != 2) /* drop super cleans up */ | |
1380 | return -EINVAL; | |
1381 | /* then only advance past the last char */ | |
1382 | ptr += 2; | |
1383 | } | |
1384 | ||
1385 | return 0; | |
1386 | } | |
1387 | ||
1388 | static int ocfs2_initialize_super(struct super_block *sb, | |
1389 | struct buffer_head *bh, | |
1390 | int sector_size) | |
1391 | { | |
bddb8eb3 | 1392 | int status; |
5a254031 MF |
1393 | int i, cbits, bbits; |
1394 | struct ocfs2_dinode *di = (struct ocfs2_dinode *)bh->b_data; | |
ccd979bd | 1395 | struct inode *inode = NULL; |
ccd979bd MF |
1396 | struct ocfs2_journal *journal; |
1397 | __le32 uuid_net_key; | |
1398 | struct ocfs2_super *osb; | |
1399 | ||
1400 | mlog_entry_void(); | |
1401 | ||
cd861280 | 1402 | osb = kzalloc(sizeof(struct ocfs2_super), GFP_KERNEL); |
ccd979bd MF |
1403 | if (!osb) { |
1404 | status = -ENOMEM; | |
1405 | mlog_errno(status); | |
1406 | goto bail; | |
1407 | } | |
1408 | ||
1409 | sb->s_fs_info = osb; | |
1410 | sb->s_op = &ocfs2_sops; | |
1411 | sb->s_export_op = &ocfs2_export_ops; | |
cf1d6c76 | 1412 | sb->s_xattr = ocfs2_xattr_handlers; |
e0dceaf0 | 1413 | sb->s_time_gran = 1; |
ccd979bd MF |
1414 | sb->s_flags |= MS_NOATIME; |
1415 | /* this is needed to support O_LARGEFILE */ | |
5a254031 MF |
1416 | cbits = le32_to_cpu(di->id2.i_super.s_clustersize_bits); |
1417 | bbits = le32_to_cpu(di->id2.i_super.s_blocksize_bits); | |
1418 | sb->s_maxbytes = ocfs2_max_file_offset(bbits, cbits); | |
ccd979bd MF |
1419 | |
1420 | osb->sb = sb; | |
1421 | /* Save off for ocfs2_rw_direct */ | |
1422 | osb->s_sectsize_bits = blksize_bits(sector_size); | |
ebdec83b | 1423 | BUG_ON(!osb->s_sectsize_bits); |
ccd979bd | 1424 | |
34d024f8 MF |
1425 | spin_lock_init(&osb->dc_task_lock); |
1426 | init_waitqueue_head(&osb->dc_event); | |
1427 | osb->dc_work_sequence = 0; | |
1428 | osb->dc_wake_sequence = 0; | |
ccd979bd MF |
1429 | INIT_LIST_HEAD(&osb->blocked_lock_list); |
1430 | osb->blocked_lock_count = 0; | |
ccd979bd | 1431 | spin_lock_init(&osb->osb_lock); |
4d0ddb2c | 1432 | ocfs2_init_inode_steal_slot(osb); |
ccd979bd MF |
1433 | |
1434 | atomic_set(&osb->alloc_stats.moves, 0); | |
1435 | atomic_set(&osb->alloc_stats.local_data, 0); | |
1436 | atomic_set(&osb->alloc_stats.bitmap_data, 0); | |
1437 | atomic_set(&osb->alloc_stats.bg_allocs, 0); | |
1438 | atomic_set(&osb->alloc_stats.bg_extends, 0); | |
1439 | ||
1440 | ocfs2_init_node_maps(osb); | |
1441 | ||
1442 | snprintf(osb->dev_str, sizeof(osb->dev_str), "%u,%u", | |
1443 | MAJOR(osb->sb->s_dev), MINOR(osb->sb->s_dev)); | |
1444 | ||
553abd04 JB |
1445 | status = ocfs2_recovery_init(osb); |
1446 | if (status) { | |
1447 | mlog(ML_ERROR, "Unable to initialize recovery state\n"); | |
1448 | mlog_errno(status); | |
1449 | goto bail; | |
1450 | } | |
ccd979bd MF |
1451 | |
1452 | init_waitqueue_head(&osb->checkpoint_event); | |
1453 | atomic_set(&osb->needs_checkpoint, 0); | |
1454 | ||
7f1a37e3 TY |
1455 | osb->s_atime_quantum = OCFS2_DEFAULT_ATIME_QUANTUM; |
1456 | ||
ccd979bd MF |
1457 | osb->slot_num = OCFS2_INVALID_SLOT; |
1458 | ||
8154da3d TY |
1459 | osb->s_xattr_inline_size = le16_to_cpu( |
1460 | di->id2.i_super.s_xattr_inline_size); | |
fdd77704 | 1461 | |
ccd979bd MF |
1462 | osb->local_alloc_state = OCFS2_LA_UNUSED; |
1463 | osb->local_alloc_bh = NULL; | |
9c7af40b | 1464 | INIT_DELAYED_WORK(&osb->la_enable_wq, ocfs2_la_enable_worker); |
ccd979bd | 1465 | |
ccd979bd MF |
1466 | init_waitqueue_head(&osb->osb_mount_event); |
1467 | ||
1468 | osb->vol_label = kmalloc(OCFS2_MAX_VOL_LABEL_LEN, GFP_KERNEL); | |
1469 | if (!osb->vol_label) { | |
1470 | mlog(ML_ERROR, "unable to alloc vol label\n"); | |
1471 | status = -ENOMEM; | |
1472 | goto bail; | |
1473 | } | |
1474 | ||
ccd979bd MF |
1475 | osb->max_slots = le16_to_cpu(di->id2.i_super.s_max_slots); |
1476 | if (osb->max_slots > OCFS2_MAX_SLOTS || osb->max_slots == 0) { | |
1477 | mlog(ML_ERROR, "Invalid number of node slots (%u)\n", | |
1478 | osb->max_slots); | |
1479 | status = -EINVAL; | |
1480 | goto bail; | |
1481 | } | |
781ee3e2 | 1482 | mlog(0, "max_slots for this device: %u\n", osb->max_slots); |
ccd979bd | 1483 | |
539d8264 SM |
1484 | osb->slot_recovery_generations = |
1485 | kcalloc(osb->max_slots, sizeof(*osb->slot_recovery_generations), | |
1486 | GFP_KERNEL); | |
1487 | if (!osb->slot_recovery_generations) { | |
1488 | status = -ENOMEM; | |
1489 | mlog_errno(status); | |
1490 | goto bail; | |
1491 | } | |
1492 | ||
b4df6ed8 MF |
1493 | init_waitqueue_head(&osb->osb_wipe_event); |
1494 | osb->osb_orphan_wipes = kcalloc(osb->max_slots, | |
1495 | sizeof(*osb->osb_orphan_wipes), | |
1496 | GFP_KERNEL); | |
1497 | if (!osb->osb_orphan_wipes) { | |
1498 | status = -ENOMEM; | |
1499 | mlog_errno(status); | |
1500 | goto bail; | |
1501 | } | |
1502 | ||
ccd979bd MF |
1503 | osb->s_feature_compat = |
1504 | le32_to_cpu(OCFS2_RAW_SB(di)->s_feature_compat); | |
1505 | osb->s_feature_ro_compat = | |
1506 | le32_to_cpu(OCFS2_RAW_SB(di)->s_feature_ro_compat); | |
1507 | osb->s_feature_incompat = | |
1508 | le32_to_cpu(OCFS2_RAW_SB(di)->s_feature_incompat); | |
1509 | ||
1510 | if ((i = OCFS2_HAS_INCOMPAT_FEATURE(osb->sb, ~OCFS2_FEATURE_INCOMPAT_SUPP))) { | |
1511 | mlog(ML_ERROR, "couldn't mount because of unsupported " | |
1512 | "optional features (%x).\n", i); | |
1513 | status = -EINVAL; | |
1514 | goto bail; | |
1515 | } | |
1516 | if (!(osb->sb->s_flags & MS_RDONLY) && | |
1517 | (i = OCFS2_HAS_RO_COMPAT_FEATURE(osb->sb, ~OCFS2_FEATURE_RO_COMPAT_SUPP))) { | |
1518 | mlog(ML_ERROR, "couldn't mount RDWR because of " | |
1519 | "unsupported optional features (%x).\n", i); | |
1520 | status = -EINVAL; | |
1521 | goto bail; | |
1522 | } | |
1523 | ||
b61817e1 JB |
1524 | if (ocfs2_userspace_stack(osb)) { |
1525 | memcpy(osb->osb_cluster_stack, | |
1526 | OCFS2_RAW_SB(di)->s_cluster_info.ci_stack, | |
1527 | OCFS2_STACK_LABEL_LEN); | |
1528 | osb->osb_cluster_stack[OCFS2_STACK_LABEL_LEN] = '\0'; | |
1529 | if (strlen(osb->osb_cluster_stack) != OCFS2_STACK_LABEL_LEN) { | |
1530 | mlog(ML_ERROR, | |
1531 | "couldn't mount because of an invalid " | |
1532 | "cluster stack label (%s) \n", | |
1533 | osb->osb_cluster_stack); | |
1534 | status = -EINVAL; | |
1535 | goto bail; | |
1536 | } | |
1537 | } else { | |
1538 | /* The empty string is identical with classic tools that | |
1539 | * don't know about s_cluster_info. */ | |
1540 | osb->osb_cluster_stack[0] = '\0'; | |
1541 | } | |
1542 | ||
ccd979bd MF |
1543 | get_random_bytes(&osb->s_next_generation, sizeof(u32)); |
1544 | ||
1545 | /* FIXME | |
1546 | * This should be done in ocfs2_journal_init(), but unknown | |
1547 | * ordering issues will cause the filesystem to crash. | |
1548 | * If anyone wants to figure out what part of the code | |
1549 | * refers to osb->journal before ocfs2_journal_init() is run, | |
1550 | * be my guest. | |
1551 | */ | |
1552 | /* initialize our journal structure */ | |
1553 | ||
cd861280 | 1554 | journal = kzalloc(sizeof(struct ocfs2_journal), GFP_KERNEL); |
ccd979bd MF |
1555 | if (!journal) { |
1556 | mlog(ML_ERROR, "unable to alloc journal\n"); | |
1557 | status = -ENOMEM; | |
1558 | goto bail; | |
1559 | } | |
1560 | osb->journal = journal; | |
1561 | journal->j_osb = osb; | |
1562 | ||
1563 | atomic_set(&journal->j_num_trans, 0); | |
1564 | init_rwsem(&journal->j_trans_barrier); | |
1565 | init_waitqueue_head(&journal->j_checkpointed); | |
1566 | spin_lock_init(&journal->j_lock); | |
1567 | journal->j_trans_id = (unsigned long) 1; | |
1568 | INIT_LIST_HEAD(&journal->j_la_cleanups); | |
c4028958 | 1569 | INIT_WORK(&journal->j_recovery_work, ocfs2_complete_recovery); |
ccd979bd MF |
1570 | journal->j_state = OCFS2_JOURNAL_FREE; |
1571 | ||
1572 | /* get some pseudo constants for clustersize bits */ | |
1573 | osb->s_clustersize_bits = | |
1574 | le32_to_cpu(di->id2.i_super.s_clustersize_bits); | |
1575 | osb->s_clustersize = 1 << osb->s_clustersize_bits; | |
1576 | mlog(0, "clusterbits=%d\n", osb->s_clustersize_bits); | |
1577 | ||
1578 | if (osb->s_clustersize < OCFS2_MIN_CLUSTERSIZE || | |
1579 | osb->s_clustersize > OCFS2_MAX_CLUSTERSIZE) { | |
1580 | mlog(ML_ERROR, "Volume has invalid cluster size (%d)\n", | |
1581 | osb->s_clustersize); | |
1582 | status = -EINVAL; | |
1583 | goto bail; | |
1584 | } | |
1585 | ||
1586 | if (ocfs2_clusters_to_blocks(osb->sb, le32_to_cpu(di->i_clusters) - 1) | |
1587 | > (u32)~0UL) { | |
1588 | mlog(ML_ERROR, "Volume might try to write to blocks beyond " | |
1589 | "what jbd can address in 32 bits.\n"); | |
1590 | status = -EINVAL; | |
1591 | goto bail; | |
1592 | } | |
1593 | ||
1594 | if (ocfs2_setup_osb_uuid(osb, di->id2.i_super.s_uuid, | |
1595 | sizeof(di->id2.i_super.s_uuid))) { | |
1596 | mlog(ML_ERROR, "Out of memory trying to setup our uuid.\n"); | |
1597 | status = -ENOMEM; | |
1598 | goto bail; | |
1599 | } | |
1600 | ||
78427043 | 1601 | memcpy(&uuid_net_key, di->id2.i_super.s_uuid, sizeof(uuid_net_key)); |
ccd979bd MF |
1602 | |
1603 | strncpy(osb->vol_label, di->id2.i_super.s_label, 63); | |
1604 | osb->vol_label[63] = '\0'; | |
1605 | osb->root_blkno = le64_to_cpu(di->id2.i_super.s_root_blkno); | |
1606 | osb->system_dir_blkno = le64_to_cpu(di->id2.i_super.s_system_dir_blkno); | |
1607 | osb->first_cluster_group_blkno = | |
1608 | le64_to_cpu(di->id2.i_super.s_first_cluster_group); | |
1609 | osb->fs_generation = le32_to_cpu(di->i_fs_generation); | |
cf1d6c76 | 1610 | osb->uuid_hash = le32_to_cpu(di->id2.i_super.s_uuid_hash); |
ccd979bd MF |
1611 | mlog(0, "vol_label: %s\n", osb->vol_label); |
1612 | mlog(0, "uuid: %s\n", osb->uuid_str); | |
b0697053 MF |
1613 | mlog(0, "root_blkno=%llu, system_dir_blkno=%llu\n", |
1614 | (unsigned long long)osb->root_blkno, | |
1615 | (unsigned long long)osb->system_dir_blkno); | |
ccd979bd MF |
1616 | |
1617 | osb->osb_dlm_debug = ocfs2_new_dlm_debug(); | |
1618 | if (!osb->osb_dlm_debug) { | |
1619 | status = -ENOMEM; | |
1620 | mlog_errno(status); | |
1621 | goto bail; | |
1622 | } | |
1623 | ||
1624 | atomic_set(&osb->vol_state, VOLUME_INIT); | |
1625 | ||
1626 | /* load root, system_dir, and all global system inodes */ | |
1627 | status = ocfs2_init_global_system_inodes(osb); | |
1628 | if (status < 0) { | |
1629 | mlog_errno(status); | |
1630 | goto bail; | |
1631 | } | |
1632 | ||
1633 | /* | |
1634 | * global bitmap | |
1635 | */ | |
1636 | inode = ocfs2_get_system_file_inode(osb, GLOBAL_BITMAP_SYSTEM_INODE, | |
1637 | OCFS2_INVALID_SLOT); | |
1638 | if (!inode) { | |
1639 | status = -EINVAL; | |
1640 | mlog_errno(status); | |
1641 | goto bail; | |
1642 | } | |
1643 | ||
1644 | osb->bitmap_blkno = OCFS2_I(inode)->ip_blkno; | |
ccd979bd | 1645 | iput(inode); |
ccd979bd | 1646 | |
e9d578a8 | 1647 | osb->bitmap_cpg = ocfs2_group_bitmap_size(sb) * 8; |
ccd979bd MF |
1648 | |
1649 | status = ocfs2_init_slot_info(osb); | |
1650 | if (status < 0) { | |
1651 | mlog_errno(status); | |
1652 | goto bail; | |
1653 | } | |
1654 | ||
ccd979bd MF |
1655 | bail: |
1656 | mlog_exit(status); | |
1657 | return status; | |
1658 | } | |
1659 | ||
1660 | /* | |
1661 | * will return: -EAGAIN if it is ok to keep searching for superblocks | |
1662 | * -EINVAL if there is a bad superblock | |
1663 | * 0 on success | |
1664 | */ | |
1665 | static int ocfs2_verify_volume(struct ocfs2_dinode *di, | |
1666 | struct buffer_head *bh, | |
1667 | u32 blksz) | |
1668 | { | |
1669 | int status = -EAGAIN; | |
1670 | ||
1671 | mlog_entry_void(); | |
1672 | ||
1673 | if (memcmp(di->i_signature, OCFS2_SUPER_BLOCK_SIGNATURE, | |
1674 | strlen(OCFS2_SUPER_BLOCK_SIGNATURE)) == 0) { | |
1675 | status = -EINVAL; | |
1676 | if ((1 << le32_to_cpu(di->id2.i_super.s_blocksize_bits)) != blksz) { | |
1677 | mlog(ML_ERROR, "found superblock with incorrect block " | |
1678 | "size: found %u, should be %u\n", | |
1679 | 1 << le32_to_cpu(di->id2.i_super.s_blocksize_bits), | |
1680 | blksz); | |
1681 | } else if (le16_to_cpu(di->id2.i_super.s_major_rev_level) != | |
1682 | OCFS2_MAJOR_REV_LEVEL || | |
1683 | le16_to_cpu(di->id2.i_super.s_minor_rev_level) != | |
1684 | OCFS2_MINOR_REV_LEVEL) { | |
1685 | mlog(ML_ERROR, "found superblock with bad version: " | |
1686 | "found %u.%u, should be %u.%u\n", | |
1687 | le16_to_cpu(di->id2.i_super.s_major_rev_level), | |
1688 | le16_to_cpu(di->id2.i_super.s_minor_rev_level), | |
1689 | OCFS2_MAJOR_REV_LEVEL, | |
1690 | OCFS2_MINOR_REV_LEVEL); | |
1691 | } else if (bh->b_blocknr != le64_to_cpu(di->i_blkno)) { | |
1692 | mlog(ML_ERROR, "bad block number on superblock: " | |
b0697053 | 1693 | "found %llu, should be %llu\n", |
1ca1a111 | 1694 | (unsigned long long)le64_to_cpu(di->i_blkno), |
b0697053 | 1695 | (unsigned long long)bh->b_blocknr); |
ccd979bd MF |
1696 | } else if (le32_to_cpu(di->id2.i_super.s_clustersize_bits) < 12 || |
1697 | le32_to_cpu(di->id2.i_super.s_clustersize_bits) > 20) { | |
1698 | mlog(ML_ERROR, "bad cluster size found: %u\n", | |
1699 | 1 << le32_to_cpu(di->id2.i_super.s_clustersize_bits)); | |
1700 | } else if (!le64_to_cpu(di->id2.i_super.s_root_blkno)) { | |
1701 | mlog(ML_ERROR, "bad root_blkno: 0\n"); | |
1702 | } else if (!le64_to_cpu(di->id2.i_super.s_system_dir_blkno)) { | |
1703 | mlog(ML_ERROR, "bad system_dir_blkno: 0\n"); | |
1704 | } else if (le16_to_cpu(di->id2.i_super.s_max_slots) > OCFS2_MAX_SLOTS) { | |
1705 | mlog(ML_ERROR, | |
1706 | "Superblock slots found greater than file system " | |
1707 | "maximum: found %u, max %u\n", | |
1708 | le16_to_cpu(di->id2.i_super.s_max_slots), | |
1709 | OCFS2_MAX_SLOTS); | |
1710 | } else { | |
1711 | /* found it! */ | |
1712 | status = 0; | |
1713 | } | |
1714 | } | |
1715 | ||
1716 | mlog_exit(status); | |
1717 | return status; | |
1718 | } | |
1719 | ||
1720 | static int ocfs2_check_volume(struct ocfs2_super *osb) | |
1721 | { | |
bddb8eb3 | 1722 | int status; |
ccd979bd | 1723 | int dirty; |
c271c5c2 | 1724 | int local; |
ccd979bd MF |
1725 | struct ocfs2_dinode *local_alloc = NULL; /* only used if we |
1726 | * recover | |
1727 | * ourselves. */ | |
1728 | ||
1729 | mlog_entry_void(); | |
1730 | ||
1731 | /* Init our journal object. */ | |
1732 | status = ocfs2_journal_init(osb->journal, &dirty); | |
1733 | if (status < 0) { | |
1734 | mlog(ML_ERROR, "Could not initialize journal!\n"); | |
1735 | goto finally; | |
1736 | } | |
1737 | ||
1738 | /* If the journal was unmounted cleanly then we don't want to | |
1739 | * recover anything. Otherwise, journal_load will do that | |
1740 | * dirty work for us :) */ | |
1741 | if (!dirty) { | |
1742 | status = ocfs2_journal_wipe(osb->journal, 0); | |
1743 | if (status < 0) { | |
1744 | mlog_errno(status); | |
1745 | goto finally; | |
1746 | } | |
1747 | } else { | |
1748 | mlog(ML_NOTICE, "File system was not unmounted cleanly, " | |
1749 | "recovering volume.\n"); | |
1750 | } | |
1751 | ||
c271c5c2 SM |
1752 | local = ocfs2_mount_local(osb); |
1753 | ||
ccd979bd | 1754 | /* will play back anything left in the journal. */ |
539d8264 | 1755 | status = ocfs2_journal_load(osb->journal, local, dirty); |
01af4820 WW |
1756 | if (status < 0) { |
1757 | mlog(ML_ERROR, "ocfs2 journal load failed! %d\n", status); | |
1758 | goto finally; | |
1759 | } | |
ccd979bd MF |
1760 | |
1761 | if (dirty) { | |
1762 | /* recover my local alloc if we didn't unmount cleanly. */ | |
1763 | status = ocfs2_begin_local_alloc_recovery(osb, | |
1764 | osb->slot_num, | |
1765 | &local_alloc); | |
1766 | if (status < 0) { | |
1767 | mlog_errno(status); | |
1768 | goto finally; | |
1769 | } | |
1770 | /* we complete the recovery process after we've marked | |
1771 | * ourselves as mounted. */ | |
1772 | } | |
1773 | ||
1774 | mlog(0, "Journal loaded.\n"); | |
1775 | ||
1776 | status = ocfs2_load_local_alloc(osb); | |
1777 | if (status < 0) { | |
1778 | mlog_errno(status); | |
1779 | goto finally; | |
1780 | } | |
1781 | ||
1782 | if (dirty) { | |
1783 | /* Recovery will be completed after we've mounted the | |
1784 | * rest of the volume. */ | |
1785 | osb->dirty = 1; | |
1786 | osb->local_alloc_copy = local_alloc; | |
1787 | local_alloc = NULL; | |
1788 | } | |
1789 | ||
1790 | /* go through each journal, trylock it and if you get the | |
1791 | * lock, and it's marked as dirty, set the bit in the recover | |
1792 | * map and launch a recovery thread for it. */ | |
1793 | status = ocfs2_mark_dead_nodes(osb); | |
1794 | if (status < 0) | |
1795 | mlog_errno(status); | |
1796 | ||
1797 | finally: | |
1798 | if (local_alloc) | |
1799 | kfree(local_alloc); | |
1800 | ||
1801 | mlog_exit(status); | |
1802 | return status; | |
1803 | } | |
1804 | ||
1805 | /* | |
1806 | * The routine gets called from dismount or close whenever a dismount on | |
1807 | * volume is requested and the osb open count becomes 1. | |
1808 | * It will remove the osb from the global list and also free up all the | |
1809 | * initialized resources and fileobject. | |
1810 | */ | |
1811 | static void ocfs2_delete_osb(struct ocfs2_super *osb) | |
1812 | { | |
1813 | mlog_entry_void(); | |
1814 | ||
1815 | /* This function assumes that the caller has the main osb resource */ | |
1816 | ||
8e8a4603 | 1817 | ocfs2_free_slot_info(osb); |
ccd979bd | 1818 | |
b4df6ed8 | 1819 | kfree(osb->osb_orphan_wipes); |
539d8264 | 1820 | kfree(osb->slot_recovery_generations); |
ccd979bd MF |
1821 | /* FIXME |
1822 | * This belongs in journal shutdown, but because we have to | |
1823 | * allocate osb->journal at the start of ocfs2_initalize_osb(), | |
1824 | * we free it here. | |
1825 | */ | |
1826 | kfree(osb->journal); | |
1827 | if (osb->local_alloc_copy) | |
1828 | kfree(osb->local_alloc_copy); | |
1829 | kfree(osb->uuid_str); | |
1830 | ocfs2_put_dlm_debug(osb->osb_dlm_debug); | |
1831 | memset(osb, 0, sizeof(struct ocfs2_super)); | |
1832 | ||
1833 | mlog_exit_void(); | |
1834 | } | |
1835 | ||
1836 | /* Put OCFS2 into a readonly state, or (if the user specifies it), | |
1837 | * panic(). We do not support continue-on-error operation. */ | |
1838 | static void ocfs2_handle_error(struct super_block *sb) | |
1839 | { | |
1840 | struct ocfs2_super *osb = OCFS2_SB(sb); | |
1841 | ||
1842 | if (osb->s_mount_opt & OCFS2_MOUNT_ERRORS_PANIC) | |
1843 | panic("OCFS2: (device %s): panic forced after error\n", | |
1844 | sb->s_id); | |
1845 | ||
1846 | ocfs2_set_osb_flag(osb, OCFS2_OSB_ERROR_FS); | |
1847 | ||
1848 | if (sb->s_flags & MS_RDONLY && | |
1849 | (ocfs2_is_soft_readonly(osb) || | |
1850 | ocfs2_is_hard_readonly(osb))) | |
1851 | return; | |
1852 | ||
1853 | printk(KERN_CRIT "File system is now read-only due to the potential " | |
1854 | "of on-disk corruption. Please run fsck.ocfs2 once the file " | |
1855 | "system is unmounted.\n"); | |
1856 | sb->s_flags |= MS_RDONLY; | |
1857 | ocfs2_set_ro_flag(osb, 0); | |
1858 | } | |
1859 | ||
1860 | static char error_buf[1024]; | |
1861 | ||
1862 | void __ocfs2_error(struct super_block *sb, | |
1863 | const char *function, | |
1864 | const char *fmt, ...) | |
1865 | { | |
1866 | va_list args; | |
1867 | ||
1868 | va_start(args, fmt); | |
4a6e617a | 1869 | vsnprintf(error_buf, sizeof(error_buf), fmt, args); |
ccd979bd MF |
1870 | va_end(args); |
1871 | ||
1872 | /* Not using mlog here because we want to show the actual | |
1873 | * function the error came from. */ | |
1874 | printk(KERN_CRIT "OCFS2: ERROR (device %s): %s: %s\n", | |
1875 | sb->s_id, function, error_buf); | |
1876 | ||
1877 | ocfs2_handle_error(sb); | |
1878 | } | |
1879 | ||
1880 | /* Handle critical errors. This is intentionally more drastic than | |
1881 | * ocfs2_handle_error, so we only use for things like journal errors, | |
1882 | * etc. */ | |
1883 | void __ocfs2_abort(struct super_block* sb, | |
1884 | const char *function, | |
1885 | const char *fmt, ...) | |
1886 | { | |
1887 | va_list args; | |
1888 | ||
1889 | va_start(args, fmt); | |
4a6e617a | 1890 | vsnprintf(error_buf, sizeof(error_buf), fmt, args); |
ccd979bd MF |
1891 | va_end(args); |
1892 | ||
1893 | printk(KERN_CRIT "OCFS2: abort (device %s): %s: %s\n", | |
1894 | sb->s_id, function, error_buf); | |
1895 | ||
1896 | /* We don't have the cluster support yet to go straight to | |
1897 | * hard readonly in here. Until then, we want to keep | |
1898 | * ocfs2_abort() so that we can at least mark critical | |
1899 | * errors. | |
1900 | * | |
1901 | * TODO: This should abort the journal and alert other nodes | |
1902 | * that our slot needs recovery. */ | |
1903 | ||
1904 | /* Force a panic(). This stinks, but it's better than letting | |
1905 | * things continue without having a proper hard readonly | |
1906 | * here. */ | |
1907 | OCFS2_SB(sb)->s_mount_opt |= OCFS2_MOUNT_ERRORS_PANIC; | |
1908 | ocfs2_handle_error(sb); | |
1909 | } | |
1910 | ||
1911 | module_init(ocfs2_init); | |
1912 | module_exit(ocfs2_exit); |