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