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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> |
19ece546 | 44 | #include <linux/quotaops.h> |
ccd979bd MF |
45 | |
46 | #define MLOG_MASK_PREFIX ML_SUPER | |
47 | #include <cluster/masklog.h> | |
48 | ||
49 | #include "ocfs2.h" | |
50 | ||
51 | /* this should be the only file to include a version 1 header */ | |
52 | #include "ocfs1_fs_compat.h" | |
53 | ||
54 | #include "alloc.h" | |
55 | #include "dlmglue.h" | |
56 | #include "export.h" | |
57 | #include "extent_map.h" | |
58 | #include "heartbeat.h" | |
59 | #include "inode.h" | |
60 | #include "journal.h" | |
61 | #include "localalloc.h" | |
62 | #include "namei.h" | |
63 | #include "slot_map.h" | |
64 | #include "super.h" | |
65 | #include "sysfile.h" | |
66 | #include "uptodate.h" | |
67 | #include "ver.h" | |
cf1d6c76 | 68 | #include "xattr.h" |
9e33d69f | 69 | #include "quota.h" |
ccd979bd MF |
70 | |
71 | #include "buffer_head_io.h" | |
72 | ||
e18b890b | 73 | static struct kmem_cache *ocfs2_inode_cachep = NULL; |
9e33d69f JK |
74 | struct kmem_cache *ocfs2_dquot_cachep; |
75 | struct kmem_cache *ocfs2_qf_chunk_cachep; | |
ccd979bd | 76 | |
ccd979bd MF |
77 | /* OCFS2 needs to schedule several differnt types of work which |
78 | * require cluster locking, disk I/O, recovery waits, etc. Since these | |
79 | * types of work tend to be heavy we avoid using the kernel events | |
80 | * workqueue and schedule on our own. */ | |
81 | struct workqueue_struct *ocfs2_wq = NULL; | |
82 | ||
83 | static struct dentry *ocfs2_debugfs_root = NULL; | |
84 | ||
85 | MODULE_AUTHOR("Oracle"); | |
86 | MODULE_LICENSE("GPL"); | |
87 | ||
c0123ade TY |
88 | struct mount_options |
89 | { | |
d147b3d6 | 90 | unsigned long commit_interval; |
c0123ade TY |
91 | unsigned long mount_opt; |
92 | unsigned int atime_quantum; | |
93 | signed short slot; | |
2fbe8d1e | 94 | unsigned int localalloc_opt; |
b61817e1 | 95 | char cluster_stack[OCFS2_STACK_LABEL_LEN + 1]; |
c0123ade TY |
96 | }; |
97 | ||
ccd979bd | 98 | static int ocfs2_parse_options(struct super_block *sb, char *options, |
c0123ade | 99 | struct mount_options *mopt, |
baf4661a | 100 | int is_remount); |
d550071c | 101 | static int ocfs2_show_options(struct seq_file *s, struct vfsmount *mnt); |
ccd979bd MF |
102 | static void ocfs2_put_super(struct super_block *sb); |
103 | static int ocfs2_mount_volume(struct super_block *sb); | |
104 | static int ocfs2_remount(struct super_block *sb, int *flags, char *data); | |
105 | static void ocfs2_dismount_volume(struct super_block *sb, int mnt_err); | |
106 | static int ocfs2_initialize_mem_caches(void); | |
107 | static void ocfs2_free_mem_caches(void); | |
108 | static void ocfs2_delete_osb(struct ocfs2_super *osb); | |
109 | ||
726c3342 | 110 | static int ocfs2_statfs(struct dentry *dentry, struct kstatfs *buf); |
ccd979bd MF |
111 | |
112 | static int ocfs2_sync_fs(struct super_block *sb, int wait); | |
113 | ||
114 | static int ocfs2_init_global_system_inodes(struct ocfs2_super *osb); | |
115 | static int ocfs2_init_local_system_inodes(struct ocfs2_super *osb); | |
bddb8eb3 | 116 | static void ocfs2_release_system_inodes(struct ocfs2_super *osb); |
ccd979bd MF |
117 | static int ocfs2_check_volume(struct ocfs2_super *osb); |
118 | static int ocfs2_verify_volume(struct ocfs2_dinode *di, | |
119 | struct buffer_head *bh, | |
120 | u32 sectsize); | |
121 | static int ocfs2_initialize_super(struct super_block *sb, | |
122 | struct buffer_head *bh, | |
123 | int sector_size); | |
124 | static int ocfs2_get_sector(struct super_block *sb, | |
125 | struct buffer_head **bh, | |
126 | int block, | |
127 | int sect_size); | |
128 | static void ocfs2_write_super(struct super_block *sb); | |
129 | static struct inode *ocfs2_alloc_inode(struct super_block *sb); | |
130 | static void ocfs2_destroy_inode(struct inode *inode); | |
19ece546 JK |
131 | static int ocfs2_susp_quotas(struct ocfs2_super *osb, int unsuspend); |
132 | static int ocfs2_enable_quotas(struct ocfs2_super *osb); | |
133 | static void ocfs2_disable_quotas(struct ocfs2_super *osb); | |
ccd979bd | 134 | |
ee9b6d61 | 135 | static const struct super_operations ocfs2_sops = { |
ccd979bd MF |
136 | .statfs = ocfs2_statfs, |
137 | .alloc_inode = ocfs2_alloc_inode, | |
138 | .destroy_inode = ocfs2_destroy_inode, | |
139 | .drop_inode = ocfs2_drop_inode, | |
140 | .clear_inode = ocfs2_clear_inode, | |
141 | .delete_inode = ocfs2_delete_inode, | |
142 | .sync_fs = ocfs2_sync_fs, | |
143 | .write_super = ocfs2_write_super, | |
144 | .put_super = ocfs2_put_super, | |
145 | .remount_fs = ocfs2_remount, | |
d550071c | 146 | .show_options = ocfs2_show_options, |
9e33d69f JK |
147 | .quota_read = ocfs2_quota_read, |
148 | .quota_write = ocfs2_quota_write, | |
ccd979bd MF |
149 | }; |
150 | ||
151 | enum { | |
152 | Opt_barrier, | |
153 | Opt_err_panic, | |
154 | Opt_err_ro, | |
155 | Opt_intr, | |
156 | Opt_nointr, | |
157 | Opt_hb_none, | |
158 | Opt_hb_local, | |
159 | Opt_data_ordered, | |
160 | Opt_data_writeback, | |
7f1a37e3 | 161 | Opt_atime_quantum, |
baf4661a | 162 | Opt_slot, |
d147b3d6 | 163 | Opt_commit, |
2fbe8d1e | 164 | Opt_localalloc, |
53fc622b | 165 | Opt_localflocks, |
b61817e1 | 166 | Opt_stack, |
cf1d6c76 TY |
167 | Opt_user_xattr, |
168 | Opt_nouser_xattr, | |
12462f1d | 169 | Opt_inode64, |
a68979b8 TY |
170 | Opt_acl, |
171 | Opt_noacl, | |
19ece546 JK |
172 | Opt_usrquota, |
173 | Opt_grpquota, | |
ccd979bd MF |
174 | Opt_err, |
175 | }; | |
176 | ||
a447c093 | 177 | static const match_table_t tokens = { |
ccd979bd MF |
178 | {Opt_barrier, "barrier=%u"}, |
179 | {Opt_err_panic, "errors=panic"}, | |
180 | {Opt_err_ro, "errors=remount-ro"}, | |
181 | {Opt_intr, "intr"}, | |
182 | {Opt_nointr, "nointr"}, | |
183 | {Opt_hb_none, OCFS2_HB_NONE}, | |
184 | {Opt_hb_local, OCFS2_HB_LOCAL}, | |
185 | {Opt_data_ordered, "data=ordered"}, | |
186 | {Opt_data_writeback, "data=writeback"}, | |
7f1a37e3 | 187 | {Opt_atime_quantum, "atime_quantum=%u"}, |
baf4661a | 188 | {Opt_slot, "preferred_slot=%u"}, |
d147b3d6 | 189 | {Opt_commit, "commit=%u"}, |
2fbe8d1e | 190 | {Opt_localalloc, "localalloc=%d"}, |
53fc622b | 191 | {Opt_localflocks, "localflocks"}, |
b61817e1 | 192 | {Opt_stack, "cluster_stack=%s"}, |
cf1d6c76 TY |
193 | {Opt_user_xattr, "user_xattr"}, |
194 | {Opt_nouser_xattr, "nouser_xattr"}, | |
12462f1d | 195 | {Opt_inode64, "inode64"}, |
a68979b8 TY |
196 | {Opt_acl, "acl"}, |
197 | {Opt_noacl, "noacl"}, | |
19ece546 JK |
198 | {Opt_usrquota, "usrquota"}, |
199 | {Opt_grpquota, "grpquota"}, | |
ccd979bd MF |
200 | {Opt_err, NULL} |
201 | }; | |
202 | ||
203 | /* | |
204 | * write_super and sync_fs ripped right out of ext3. | |
205 | */ | |
206 | static void ocfs2_write_super(struct super_block *sb) | |
207 | { | |
7892f2f4 | 208 | if (mutex_trylock(&sb->s_lock) != 0) |
ccd979bd MF |
209 | BUG(); |
210 | sb->s_dirt = 0; | |
211 | } | |
212 | ||
213 | static int ocfs2_sync_fs(struct super_block *sb, int wait) | |
214 | { | |
bddb8eb3 | 215 | int status; |
ccd979bd MF |
216 | tid_t target; |
217 | struct ocfs2_super *osb = OCFS2_SB(sb); | |
218 | ||
219 | sb->s_dirt = 0; | |
220 | ||
221 | if (ocfs2_is_hard_readonly(osb)) | |
222 | return -EROFS; | |
223 | ||
224 | if (wait) { | |
225 | status = ocfs2_flush_truncate_log(osb); | |
226 | if (status < 0) | |
227 | mlog_errno(status); | |
228 | } else { | |
229 | ocfs2_schedule_truncate_log_flush(osb, 0); | |
230 | } | |
231 | ||
2b4e30fb JB |
232 | if (jbd2_journal_start_commit(OCFS2_SB(sb)->journal->j_journal, |
233 | &target)) { | |
ccd979bd | 234 | if (wait) |
2b4e30fb JB |
235 | jbd2_log_wait_commit(OCFS2_SB(sb)->journal->j_journal, |
236 | target); | |
ccd979bd MF |
237 | } |
238 | return 0; | |
239 | } | |
240 | ||
1a224ad1 JK |
241 | static int ocfs2_need_system_inode(struct ocfs2_super *osb, int ino) |
242 | { | |
243 | if (!OCFS2_HAS_RO_COMPAT_FEATURE(osb->sb, OCFS2_FEATURE_RO_COMPAT_USRQUOTA) | |
244 | && (ino == USER_QUOTA_SYSTEM_INODE | |
245 | || ino == LOCAL_USER_QUOTA_SYSTEM_INODE)) | |
246 | return 0; | |
247 | if (!OCFS2_HAS_RO_COMPAT_FEATURE(osb->sb, OCFS2_FEATURE_RO_COMPAT_GRPQUOTA) | |
248 | && (ino == GROUP_QUOTA_SYSTEM_INODE | |
249 | || ino == LOCAL_GROUP_QUOTA_SYSTEM_INODE)) | |
250 | return 0; | |
251 | return 1; | |
252 | } | |
253 | ||
ccd979bd MF |
254 | static int ocfs2_init_global_system_inodes(struct ocfs2_super *osb) |
255 | { | |
256 | struct inode *new = NULL; | |
257 | int status = 0; | |
258 | int i; | |
259 | ||
260 | mlog_entry_void(); | |
261 | ||
5fa0613e | 262 | new = ocfs2_iget(osb, osb->root_blkno, OCFS2_FI_FLAG_SYSFILE, 0); |
ccd979bd MF |
263 | if (IS_ERR(new)) { |
264 | status = PTR_ERR(new); | |
265 | mlog_errno(status); | |
266 | goto bail; | |
267 | } | |
268 | osb->root_inode = new; | |
269 | ||
5fa0613e | 270 | new = ocfs2_iget(osb, osb->system_dir_blkno, OCFS2_FI_FLAG_SYSFILE, 0); |
ccd979bd MF |
271 | if (IS_ERR(new)) { |
272 | status = PTR_ERR(new); | |
273 | mlog_errno(status); | |
274 | goto bail; | |
275 | } | |
276 | osb->sys_root_inode = new; | |
277 | ||
278 | for (i = OCFS2_FIRST_ONLINE_SYSTEM_INODE; | |
279 | i <= OCFS2_LAST_GLOBAL_SYSTEM_INODE; i++) { | |
1a224ad1 JK |
280 | if (!ocfs2_need_system_inode(osb, i)) |
281 | continue; | |
ccd979bd MF |
282 | new = ocfs2_get_system_file_inode(osb, i, osb->slot_num); |
283 | if (!new) { | |
284 | ocfs2_release_system_inodes(osb); | |
285 | status = -EINVAL; | |
286 | mlog_errno(status); | |
287 | /* FIXME: Should ERROR_RO_FS */ | |
288 | mlog(ML_ERROR, "Unable to load system inode %d, " | |
289 | "possibly corrupt fs?", i); | |
290 | goto bail; | |
291 | } | |
292 | // the array now has one ref, so drop this one | |
293 | iput(new); | |
294 | } | |
295 | ||
296 | bail: | |
297 | mlog_exit(status); | |
298 | return status; | |
299 | } | |
300 | ||
301 | static int ocfs2_init_local_system_inodes(struct ocfs2_super *osb) | |
302 | { | |
303 | struct inode *new = NULL; | |
304 | int status = 0; | |
305 | int i; | |
306 | ||
307 | mlog_entry_void(); | |
308 | ||
309 | for (i = OCFS2_LAST_GLOBAL_SYSTEM_INODE + 1; | |
310 | i < NUM_SYSTEM_INODES; | |
311 | i++) { | |
1a224ad1 JK |
312 | if (!ocfs2_need_system_inode(osb, i)) |
313 | continue; | |
ccd979bd MF |
314 | new = ocfs2_get_system_file_inode(osb, i, osb->slot_num); |
315 | if (!new) { | |
316 | ocfs2_release_system_inodes(osb); | |
317 | status = -EINVAL; | |
318 | mlog(ML_ERROR, "status=%d, sysfile=%d, slot=%d\n", | |
319 | status, i, osb->slot_num); | |
320 | goto bail; | |
321 | } | |
322 | /* the array now has one ref, so drop this one */ | |
323 | iput(new); | |
324 | } | |
325 | ||
326 | bail: | |
327 | mlog_exit(status); | |
328 | return status; | |
329 | } | |
330 | ||
bddb8eb3 | 331 | static void ocfs2_release_system_inodes(struct ocfs2_super *osb) |
ccd979bd | 332 | { |
bddb8eb3 | 333 | int i; |
ccd979bd MF |
334 | struct inode *inode; |
335 | ||
336 | mlog_entry_void(); | |
337 | ||
338 | for (i = 0; i < NUM_SYSTEM_INODES; i++) { | |
339 | inode = osb->system_inodes[i]; | |
340 | if (inode) { | |
341 | iput(inode); | |
342 | osb->system_inodes[i] = NULL; | |
343 | } | |
344 | } | |
345 | ||
346 | inode = osb->sys_root_inode; | |
347 | if (inode) { | |
348 | iput(inode); | |
349 | osb->sys_root_inode = NULL; | |
350 | } | |
351 | ||
352 | inode = osb->root_inode; | |
353 | if (inode) { | |
354 | iput(inode); | |
355 | osb->root_inode = NULL; | |
356 | } | |
357 | ||
bddb8eb3 | 358 | mlog_exit(0); |
ccd979bd MF |
359 | } |
360 | ||
361 | /* We're allocating fs objects, use GFP_NOFS */ | |
362 | static struct inode *ocfs2_alloc_inode(struct super_block *sb) | |
363 | { | |
364 | struct ocfs2_inode_info *oi; | |
365 | ||
e6b4f8da | 366 | oi = kmem_cache_alloc(ocfs2_inode_cachep, GFP_NOFS); |
ccd979bd MF |
367 | if (!oi) |
368 | return NULL; | |
369 | ||
2b4e30fb | 370 | jbd2_journal_init_jbd_inode(&oi->ip_jinode, &oi->vfs_inode); |
ccd979bd MF |
371 | return &oi->vfs_inode; |
372 | } | |
373 | ||
374 | static void ocfs2_destroy_inode(struct inode *inode) | |
375 | { | |
376 | kmem_cache_free(ocfs2_inode_cachep, OCFS2_I(inode)); | |
377 | } | |
378 | ||
5a254031 MF |
379 | static unsigned long long ocfs2_max_file_offset(unsigned int bbits, |
380 | unsigned int cbits) | |
ccd979bd | 381 | { |
5a254031 MF |
382 | unsigned int bytes = 1 << cbits; |
383 | unsigned int trim = bytes; | |
384 | unsigned int bitshift = 32; | |
385 | ||
386 | /* | |
387 | * i_size and all block offsets in ocfs2 are always 64 bits | |
388 | * wide. i_clusters is 32 bits, in cluster-sized units. So on | |
389 | * 64 bit platforms, cluster size will be the limiting factor. | |
ccd979bd MF |
390 | */ |
391 | ||
392 | #if BITS_PER_LONG == 32 | |
393 | # if defined(CONFIG_LBD) | |
2ecd05ae | 394 | BUILD_BUG_ON(sizeof(sector_t) != 8); |
5a254031 MF |
395 | /* |
396 | * We might be limited by page cache size. | |
397 | */ | |
398 | if (bytes > PAGE_CACHE_SIZE) { | |
399 | bytes = PAGE_CACHE_SIZE; | |
400 | trim = 1; | |
401 | /* | |
402 | * Shift by 31 here so that we don't get larger than | |
403 | * MAX_LFS_FILESIZE | |
404 | */ | |
405 | bitshift = 31; | |
406 | } | |
ccd979bd | 407 | # else |
5a254031 MF |
408 | /* |
409 | * We are limited by the size of sector_t. Use block size, as | |
410 | * that's what we expose to the VFS. | |
411 | */ | |
412 | bytes = 1 << bbits; | |
413 | trim = 1; | |
414 | bitshift = 31; | |
ccd979bd MF |
415 | # endif |
416 | #endif | |
417 | ||
5a254031 MF |
418 | /* |
419 | * Trim by a whole cluster when we can actually approach the | |
420 | * on-disk limits. Otherwise we can overflow i_clusters when | |
421 | * an extent start is at the max offset. | |
422 | */ | |
423 | return (((unsigned long long)bytes) << bitshift) - trim; | |
ccd979bd MF |
424 | } |
425 | ||
426 | static int ocfs2_remount(struct super_block *sb, int *flags, char *data) | |
427 | { | |
428 | int incompat_features; | |
429 | int ret = 0; | |
c0123ade | 430 | struct mount_options parsed_options; |
ccd979bd MF |
431 | struct ocfs2_super *osb = OCFS2_SB(sb); |
432 | ||
c0123ade | 433 | if (!ocfs2_parse_options(sb, data, &parsed_options, 1)) { |
ccd979bd MF |
434 | ret = -EINVAL; |
435 | goto out; | |
436 | } | |
437 | ||
438 | if ((osb->s_mount_opt & OCFS2_MOUNT_HB_LOCAL) != | |
c0123ade | 439 | (parsed_options.mount_opt & OCFS2_MOUNT_HB_LOCAL)) { |
ccd979bd MF |
440 | ret = -EINVAL; |
441 | mlog(ML_ERROR, "Cannot change heartbeat mode on remount\n"); | |
442 | goto out; | |
443 | } | |
444 | ||
445 | if ((osb->s_mount_opt & OCFS2_MOUNT_DATA_WRITEBACK) != | |
c0123ade | 446 | (parsed_options.mount_opt & OCFS2_MOUNT_DATA_WRITEBACK)) { |
ccd979bd MF |
447 | ret = -EINVAL; |
448 | mlog(ML_ERROR, "Cannot change data mode on remount\n"); | |
449 | goto out; | |
450 | } | |
451 | ||
12462f1d JB |
452 | /* Probably don't want this on remount; it might |
453 | * mess with other nodes */ | |
454 | if (!(osb->s_mount_opt & OCFS2_MOUNT_INODE64) && | |
455 | (parsed_options.mount_opt & OCFS2_MOUNT_INODE64)) { | |
456 | ret = -EINVAL; | |
457 | mlog(ML_ERROR, "Cannot enable inode64 on remount\n"); | |
458 | goto out; | |
459 | } | |
460 | ||
ccd979bd MF |
461 | /* We're going to/from readonly mode. */ |
462 | if ((*flags & MS_RDONLY) != (sb->s_flags & MS_RDONLY)) { | |
19ece546 JK |
463 | /* Disable quota accounting before remounting RO */ |
464 | if (*flags & MS_RDONLY) { | |
465 | ret = ocfs2_susp_quotas(osb, 0); | |
466 | if (ret < 0) | |
467 | goto out; | |
468 | } | |
ccd979bd MF |
469 | /* Lock here so the check of HARD_RO and the potential |
470 | * setting of SOFT_RO is atomic. */ | |
471 | spin_lock(&osb->osb_lock); | |
472 | if (osb->osb_flags & OCFS2_OSB_HARD_RO) { | |
473 | mlog(ML_ERROR, "Remount on readonly device is forbidden.\n"); | |
474 | ret = -EROFS; | |
475 | goto unlock_osb; | |
476 | } | |
477 | ||
478 | if (*flags & MS_RDONLY) { | |
479 | mlog(0, "Going to ro mode.\n"); | |
480 | sb->s_flags |= MS_RDONLY; | |
481 | osb->osb_flags |= OCFS2_OSB_SOFT_RO; | |
482 | } else { | |
483 | mlog(0, "Making ro filesystem writeable.\n"); | |
484 | ||
485 | if (osb->osb_flags & OCFS2_OSB_ERROR_FS) { | |
486 | mlog(ML_ERROR, "Cannot remount RDWR " | |
487 | "filesystem due to previous errors.\n"); | |
488 | ret = -EROFS; | |
489 | goto unlock_osb; | |
490 | } | |
491 | incompat_features = OCFS2_HAS_RO_COMPAT_FEATURE(sb, ~OCFS2_FEATURE_RO_COMPAT_SUPP); | |
492 | if (incompat_features) { | |
493 | mlog(ML_ERROR, "Cannot remount RDWR because " | |
494 | "of unsupported optional features " | |
495 | "(%x).\n", incompat_features); | |
496 | ret = -EINVAL; | |
497 | goto unlock_osb; | |
498 | } | |
499 | sb->s_flags &= ~MS_RDONLY; | |
500 | osb->osb_flags &= ~OCFS2_OSB_SOFT_RO; | |
501 | } | |
502 | unlock_osb: | |
503 | spin_unlock(&osb->osb_lock); | |
19ece546 JK |
504 | /* Enable quota accounting after remounting RW */ |
505 | if (!ret && !(*flags & MS_RDONLY)) { | |
506 | if (sb_any_quota_suspended(sb)) | |
507 | ret = ocfs2_susp_quotas(osb, 1); | |
508 | else | |
509 | ret = ocfs2_enable_quotas(osb); | |
510 | if (ret < 0) { | |
511 | /* Return back changes... */ | |
512 | spin_lock(&osb->osb_lock); | |
513 | sb->s_flags |= MS_RDONLY; | |
514 | osb->osb_flags |= OCFS2_OSB_SOFT_RO; | |
515 | spin_unlock(&osb->osb_lock); | |
516 | goto out; | |
517 | } | |
518 | } | |
ccd979bd MF |
519 | } |
520 | ||
521 | if (!ret) { | |
ccd979bd MF |
522 | /* Only save off the new mount options in case of a successful |
523 | * remount. */ | |
a68979b8 TY |
524 | if (!(osb->s_feature_incompat & OCFS2_FEATURE_INCOMPAT_XATTR)) |
525 | parsed_options.mount_opt &= ~OCFS2_MOUNT_POSIX_ACL; | |
c0123ade TY |
526 | osb->s_mount_opt = parsed_options.mount_opt; |
527 | osb->s_atime_quantum = parsed_options.atime_quantum; | |
528 | osb->preferred_slot = parsed_options.slot; | |
d147b3d6 MF |
529 | if (parsed_options.commit_interval) |
530 | osb->osb_commit_interval = parsed_options.commit_interval; | |
e001e796 MF |
531 | |
532 | if (!ocfs2_is_hard_readonly(osb)) | |
533 | ocfs2_set_journal_params(osb); | |
ccd979bd MF |
534 | } |
535 | out: | |
536 | return ret; | |
537 | } | |
538 | ||
539 | static int ocfs2_sb_probe(struct super_block *sb, | |
540 | struct buffer_head **bh, | |
541 | int *sector_size) | |
542 | { | |
bddb8eb3 | 543 | int status, tmpstat; |
ccd979bd MF |
544 | struct ocfs1_vol_disk_hdr *hdr; |
545 | struct ocfs2_dinode *di; | |
546 | int blksize; | |
547 | ||
548 | *bh = NULL; | |
549 | ||
550 | /* may be > 512 */ | |
551 | *sector_size = bdev_hardsect_size(sb->s_bdev); | |
552 | if (*sector_size > OCFS2_MAX_BLOCKSIZE) { | |
553 | mlog(ML_ERROR, "Hardware sector size too large: %d (max=%d)\n", | |
554 | *sector_size, OCFS2_MAX_BLOCKSIZE); | |
555 | status = -EINVAL; | |
556 | goto bail; | |
557 | } | |
558 | ||
559 | /* Can this really happen? */ | |
560 | if (*sector_size < OCFS2_MIN_BLOCKSIZE) | |
561 | *sector_size = OCFS2_MIN_BLOCKSIZE; | |
562 | ||
563 | /* check block zero for old format */ | |
564 | status = ocfs2_get_sector(sb, bh, 0, *sector_size); | |
565 | if (status < 0) { | |
566 | mlog_errno(status); | |
567 | goto bail; | |
568 | } | |
569 | hdr = (struct ocfs1_vol_disk_hdr *) (*bh)->b_data; | |
570 | if (hdr->major_version == OCFS1_MAJOR_VERSION) { | |
571 | mlog(ML_ERROR, "incompatible version: %u.%u\n", | |
572 | hdr->major_version, hdr->minor_version); | |
573 | status = -EINVAL; | |
574 | } | |
575 | if (memcmp(hdr->signature, OCFS1_VOLUME_SIGNATURE, | |
576 | strlen(OCFS1_VOLUME_SIGNATURE)) == 0) { | |
577 | mlog(ML_ERROR, "incompatible volume signature: %8s\n", | |
578 | hdr->signature); | |
579 | status = -EINVAL; | |
580 | } | |
581 | brelse(*bh); | |
582 | *bh = NULL; | |
583 | if (status < 0) { | |
584 | mlog(ML_ERROR, "This is an ocfs v1 filesystem which must be " | |
585 | "upgraded before mounting with ocfs v2\n"); | |
586 | goto bail; | |
587 | } | |
588 | ||
589 | /* | |
590 | * Now check at magic offset for 512, 1024, 2048, 4096 | |
591 | * blocksizes. 4096 is the maximum blocksize because it is | |
592 | * the minimum clustersize. | |
593 | */ | |
594 | status = -EINVAL; | |
595 | for (blksize = *sector_size; | |
596 | blksize <= OCFS2_MAX_BLOCKSIZE; | |
597 | blksize <<= 1) { | |
598 | tmpstat = ocfs2_get_sector(sb, bh, | |
599 | OCFS2_SUPER_BLOCK_BLKNO, | |
600 | blksize); | |
601 | if (tmpstat < 0) { | |
602 | status = tmpstat; | |
603 | mlog_errno(status); | |
604 | goto bail; | |
605 | } | |
606 | di = (struct ocfs2_dinode *) (*bh)->b_data; | |
607 | status = ocfs2_verify_volume(di, *bh, blksize); | |
608 | if (status >= 0) | |
609 | goto bail; | |
610 | brelse(*bh); | |
611 | *bh = NULL; | |
612 | if (status != -EAGAIN) | |
613 | break; | |
614 | } | |
615 | ||
616 | bail: | |
617 | return status; | |
618 | } | |
619 | ||
c271c5c2 SM |
620 | static int ocfs2_verify_heartbeat(struct ocfs2_super *osb) |
621 | { | |
622 | if (ocfs2_mount_local(osb)) { | |
623 | if (osb->s_mount_opt & OCFS2_MOUNT_HB_LOCAL) { | |
624 | mlog(ML_ERROR, "Cannot heartbeat on a locally " | |
625 | "mounted device.\n"); | |
626 | return -EINVAL; | |
627 | } | |
628 | } | |
629 | ||
b61817e1 JB |
630 | if (ocfs2_userspace_stack(osb)) { |
631 | if (osb->s_mount_opt & OCFS2_MOUNT_HB_LOCAL) { | |
632 | mlog(ML_ERROR, "Userspace stack expected, but " | |
633 | "o2cb heartbeat arguments passed to mount\n"); | |
634 | return -EINVAL; | |
635 | } | |
636 | } | |
637 | ||
c271c5c2 | 638 | if (!(osb->s_mount_opt & OCFS2_MOUNT_HB_LOCAL)) { |
b61817e1 JB |
639 | if (!ocfs2_mount_local(osb) && !ocfs2_is_hard_readonly(osb) && |
640 | !ocfs2_userspace_stack(osb)) { | |
c271c5c2 SM |
641 | mlog(ML_ERROR, "Heartbeat has to be started to mount " |
642 | "a read-write clustered device.\n"); | |
643 | return -EINVAL; | |
644 | } | |
645 | } | |
646 | ||
647 | return 0; | |
648 | } | |
649 | ||
b61817e1 JB |
650 | /* |
651 | * If we're using a userspace stack, mount should have passed | |
652 | * a name that matches the disk. If not, mount should not | |
653 | * have passed a stack. | |
654 | */ | |
655 | static int ocfs2_verify_userspace_stack(struct ocfs2_super *osb, | |
656 | struct mount_options *mopt) | |
657 | { | |
658 | if (!ocfs2_userspace_stack(osb) && mopt->cluster_stack[0]) { | |
659 | mlog(ML_ERROR, | |
660 | "cluster stack passed to mount, but this filesystem " | |
661 | "does not support it\n"); | |
662 | return -EINVAL; | |
663 | } | |
664 | ||
665 | if (ocfs2_userspace_stack(osb) && | |
666 | strncmp(osb->osb_cluster_stack, mopt->cluster_stack, | |
667 | OCFS2_STACK_LABEL_LEN)) { | |
668 | mlog(ML_ERROR, | |
669 | "cluster stack passed to mount (\"%s\") does not " | |
670 | "match the filesystem (\"%s\")\n", | |
671 | mopt->cluster_stack, | |
672 | osb->osb_cluster_stack); | |
673 | return -EINVAL; | |
674 | } | |
675 | ||
676 | return 0; | |
677 | } | |
678 | ||
19ece546 JK |
679 | static int ocfs2_susp_quotas(struct ocfs2_super *osb, int unsuspend) |
680 | { | |
681 | int type; | |
682 | struct super_block *sb = osb->sb; | |
683 | unsigned int feature[MAXQUOTAS] = { OCFS2_FEATURE_RO_COMPAT_USRQUOTA, | |
684 | OCFS2_FEATURE_RO_COMPAT_GRPQUOTA}; | |
685 | int status = 0; | |
686 | ||
687 | for (type = 0; type < MAXQUOTAS; type++) { | |
688 | if (!OCFS2_HAS_RO_COMPAT_FEATURE(sb, feature[type])) | |
689 | continue; | |
690 | if (unsuspend) | |
691 | status = vfs_quota_enable( | |
692 | sb_dqopt(sb)->files[type], | |
693 | type, QFMT_OCFS2, | |
694 | DQUOT_SUSPENDED); | |
695 | else | |
696 | status = vfs_quota_disable(sb, type, | |
697 | DQUOT_SUSPENDED); | |
698 | if (status < 0) | |
699 | break; | |
700 | } | |
701 | if (status < 0) | |
702 | mlog(ML_ERROR, "Failed to suspend/unsuspend quotas on " | |
703 | "remount (error = %d).\n", status); | |
704 | return status; | |
705 | } | |
706 | ||
707 | static int ocfs2_enable_quotas(struct ocfs2_super *osb) | |
708 | { | |
709 | struct inode *inode[MAXQUOTAS] = { NULL, NULL }; | |
710 | struct super_block *sb = osb->sb; | |
711 | unsigned int feature[MAXQUOTAS] = { OCFS2_FEATURE_RO_COMPAT_USRQUOTA, | |
712 | OCFS2_FEATURE_RO_COMPAT_GRPQUOTA}; | |
713 | unsigned int ino[MAXQUOTAS] = { LOCAL_USER_QUOTA_SYSTEM_INODE, | |
714 | LOCAL_GROUP_QUOTA_SYSTEM_INODE }; | |
715 | int status; | |
716 | int type; | |
717 | ||
718 | sb_dqopt(sb)->flags |= DQUOT_QUOTA_SYS_FILE | DQUOT_NEGATIVE_USAGE; | |
719 | for (type = 0; type < MAXQUOTAS; type++) { | |
720 | if (!OCFS2_HAS_RO_COMPAT_FEATURE(sb, feature[type])) | |
721 | continue; | |
722 | inode[type] = ocfs2_get_system_file_inode(osb, ino[type], | |
723 | osb->slot_num); | |
724 | if (!inode[type]) { | |
725 | status = -ENOENT; | |
726 | goto out_quota_off; | |
727 | } | |
728 | status = vfs_quota_enable(inode[type], type, QFMT_OCFS2, | |
729 | DQUOT_USAGE_ENABLED); | |
730 | if (status < 0) | |
731 | goto out_quota_off; | |
732 | } | |
733 | ||
734 | for (type = 0; type < MAXQUOTAS; type++) | |
735 | iput(inode[type]); | |
736 | return 0; | |
737 | out_quota_off: | |
738 | ocfs2_disable_quotas(osb); | |
739 | for (type = 0; type < MAXQUOTAS; type++) | |
740 | iput(inode[type]); | |
741 | mlog_errno(status); | |
742 | return status; | |
743 | } | |
744 | ||
745 | static void ocfs2_disable_quotas(struct ocfs2_super *osb) | |
746 | { | |
747 | int type; | |
748 | struct inode *inode; | |
749 | struct super_block *sb = osb->sb; | |
750 | ||
751 | /* We mostly ignore errors in this function because there's not much | |
752 | * we can do when we see them */ | |
753 | for (type = 0; type < MAXQUOTAS; type++) { | |
754 | if (!sb_has_quota_loaded(sb, type)) | |
755 | continue; | |
756 | inode = igrab(sb->s_dquot.files[type]); | |
757 | /* Turn off quotas. This will remove all dquot structures from | |
758 | * memory and so they will be automatically synced to global | |
759 | * quota files */ | |
760 | vfs_quota_disable(sb, type, DQUOT_USAGE_ENABLED | | |
761 | DQUOT_LIMITS_ENABLED); | |
762 | if (!inode) | |
763 | continue; | |
764 | iput(inode); | |
765 | } | |
766 | } | |
767 | ||
768 | /* Handle quota on quotactl */ | |
769 | static int ocfs2_quota_on(struct super_block *sb, int type, int format_id, | |
770 | char *path, int remount) | |
771 | { | |
772 | unsigned int feature[MAXQUOTAS] = { OCFS2_FEATURE_RO_COMPAT_USRQUOTA, | |
773 | OCFS2_FEATURE_RO_COMPAT_GRPQUOTA}; | |
774 | ||
775 | if (!OCFS2_HAS_RO_COMPAT_FEATURE(sb, feature[type])) | |
776 | return -EINVAL; | |
777 | ||
778 | if (remount) | |
779 | return 0; /* Just ignore it has been handled in | |
780 | * ocfs2_remount() */ | |
781 | return vfs_quota_enable(sb_dqopt(sb)->files[type], type, | |
782 | format_id, DQUOT_LIMITS_ENABLED); | |
783 | } | |
784 | ||
785 | /* Handle quota off quotactl */ | |
786 | static int ocfs2_quota_off(struct super_block *sb, int type, int remount) | |
787 | { | |
788 | if (remount) | |
789 | return 0; /* Ignore now and handle later in | |
790 | * ocfs2_remount() */ | |
791 | return vfs_quota_disable(sb, type, DQUOT_LIMITS_ENABLED); | |
792 | } | |
793 | ||
794 | static struct quotactl_ops ocfs2_quotactl_ops = { | |
795 | .quota_on = ocfs2_quota_on, | |
796 | .quota_off = ocfs2_quota_off, | |
797 | .quota_sync = vfs_quota_sync, | |
798 | .get_info = vfs_get_dqinfo, | |
799 | .set_info = vfs_set_dqinfo, | |
800 | .get_dqblk = vfs_get_dqblk, | |
801 | .set_dqblk = vfs_set_dqblk, | |
802 | }; | |
803 | ||
ccd979bd MF |
804 | static int ocfs2_fill_super(struct super_block *sb, void *data, int silent) |
805 | { | |
806 | struct dentry *root; | |
807 | int status, sector_size; | |
c0123ade | 808 | struct mount_options parsed_options; |
ccd979bd MF |
809 | struct inode *inode = NULL; |
810 | struct ocfs2_super *osb = NULL; | |
811 | struct buffer_head *bh = NULL; | |
c271c5c2 | 812 | char nodestr[8]; |
ccd979bd MF |
813 | |
814 | mlog_entry("%p, %p, %i", sb, data, silent); | |
815 | ||
c0123ade | 816 | if (!ocfs2_parse_options(sb, data, &parsed_options, 0)) { |
ccd979bd MF |
817 | status = -EINVAL; |
818 | goto read_super_error; | |
819 | } | |
820 | ||
821 | /* probe for superblock */ | |
822 | status = ocfs2_sb_probe(sb, &bh, §or_size); | |
823 | if (status < 0) { | |
824 | mlog(ML_ERROR, "superblock probe failed!\n"); | |
825 | goto read_super_error; | |
826 | } | |
827 | ||
828 | status = ocfs2_initialize_super(sb, bh, sector_size); | |
829 | osb = OCFS2_SB(sb); | |
830 | if (status < 0) { | |
831 | mlog_errno(status); | |
832 | goto read_super_error; | |
833 | } | |
834 | brelse(bh); | |
835 | bh = NULL; | |
a68979b8 TY |
836 | |
837 | if (!(osb->s_feature_incompat & OCFS2_FEATURE_INCOMPAT_XATTR)) | |
838 | parsed_options.mount_opt &= ~OCFS2_MOUNT_POSIX_ACL; | |
839 | ||
c0123ade TY |
840 | osb->s_mount_opt = parsed_options.mount_opt; |
841 | osb->s_atime_quantum = parsed_options.atime_quantum; | |
842 | osb->preferred_slot = parsed_options.slot; | |
d147b3d6 | 843 | osb->osb_commit_interval = parsed_options.commit_interval; |
9c7af40b MF |
844 | osb->local_alloc_default_bits = ocfs2_megabytes_to_clusters(sb, parsed_options.localalloc_opt); |
845 | osb->local_alloc_bits = osb->local_alloc_default_bits; | |
19ece546 JK |
846 | if (osb->s_mount_opt & OCFS2_MOUNT_USRQUOTA && |
847 | !OCFS2_HAS_RO_COMPAT_FEATURE(sb, | |
848 | OCFS2_FEATURE_RO_COMPAT_USRQUOTA)) { | |
849 | status = -EINVAL; | |
850 | mlog(ML_ERROR, "User quotas were requested, but this " | |
851 | "filesystem does not have the feature enabled.\n"); | |
852 | goto read_super_error; | |
853 | } | |
854 | if (osb->s_mount_opt & OCFS2_MOUNT_GRPQUOTA && | |
855 | !OCFS2_HAS_RO_COMPAT_FEATURE(sb, | |
856 | OCFS2_FEATURE_RO_COMPAT_GRPQUOTA)) { | |
857 | status = -EINVAL; | |
858 | mlog(ML_ERROR, "Group quotas were requested, but this " | |
859 | "filesystem does not have the feature enabled.\n"); | |
860 | goto read_super_error; | |
861 | } | |
ccd979bd | 862 | |
b61817e1 JB |
863 | status = ocfs2_verify_userspace_stack(osb, &parsed_options); |
864 | if (status) | |
865 | goto read_super_error; | |
866 | ||
ccd979bd MF |
867 | sb->s_magic = OCFS2_SUPER_MAGIC; |
868 | ||
a68979b8 TY |
869 | sb->s_flags = (sb->s_flags & ~MS_POSIXACL) | |
870 | ((osb->s_mount_opt & OCFS2_MOUNT_POSIX_ACL) ? MS_POSIXACL : 0); | |
871 | ||
ccd979bd MF |
872 | /* Hard readonly mode only if: bdev_read_only, MS_RDONLY, |
873 | * heartbeat=none */ | |
874 | if (bdev_read_only(sb->s_bdev)) { | |
875 | if (!(sb->s_flags & MS_RDONLY)) { | |
876 | status = -EACCES; | |
877 | mlog(ML_ERROR, "Readonly device detected but readonly " | |
878 | "mount was not specified.\n"); | |
879 | goto read_super_error; | |
880 | } | |
881 | ||
882 | /* You should not be able to start a local heartbeat | |
883 | * on a readonly device. */ | |
884 | if (osb->s_mount_opt & OCFS2_MOUNT_HB_LOCAL) { | |
885 | status = -EROFS; | |
886 | mlog(ML_ERROR, "Local heartbeat specified on readonly " | |
887 | "device.\n"); | |
888 | goto read_super_error; | |
889 | } | |
890 | ||
891 | status = ocfs2_check_journals_nolocks(osb); | |
892 | if (status < 0) { | |
893 | if (status == -EROFS) | |
894 | mlog(ML_ERROR, "Recovery required on readonly " | |
895 | "file system, but write access is " | |
896 | "unavailable.\n"); | |
897 | else | |
898 | mlog_errno(status); | |
899 | goto read_super_error; | |
900 | } | |
901 | ||
902 | ocfs2_set_ro_flag(osb, 1); | |
903 | ||
904 | printk(KERN_NOTICE "Readonly device detected. No cluster " | |
905 | "services will be utilized for this mount. Recovery " | |
906 | "will be skipped.\n"); | |
907 | } | |
908 | ||
909 | if (!ocfs2_is_hard_readonly(osb)) { | |
ccd979bd MF |
910 | if (sb->s_flags & MS_RDONLY) |
911 | ocfs2_set_ro_flag(osb, 0); | |
912 | } | |
913 | ||
c271c5c2 SM |
914 | status = ocfs2_verify_heartbeat(osb); |
915 | if (status < 0) { | |
916 | mlog_errno(status); | |
917 | goto read_super_error; | |
918 | } | |
919 | ||
ccd979bd MF |
920 | osb->osb_debug_root = debugfs_create_dir(osb->uuid_str, |
921 | ocfs2_debugfs_root); | |
922 | if (!osb->osb_debug_root) { | |
923 | status = -EINVAL; | |
924 | mlog(ML_ERROR, "Unable to create per-mount debugfs root.\n"); | |
925 | goto read_super_error; | |
926 | } | |
927 | ||
928 | status = ocfs2_mount_volume(sb); | |
929 | if (osb->root_inode) | |
930 | inode = igrab(osb->root_inode); | |
931 | ||
932 | if (status < 0) | |
933 | goto read_super_error; | |
934 | ||
935 | if (!inode) { | |
936 | status = -EIO; | |
937 | mlog_errno(status); | |
938 | goto read_super_error; | |
939 | } | |
940 | ||
941 | root = d_alloc_root(inode); | |
942 | if (!root) { | |
943 | status = -ENOMEM; | |
944 | mlog_errno(status); | |
945 | goto read_super_error; | |
946 | } | |
947 | ||
948 | sb->s_root = root; | |
949 | ||
950 | ocfs2_complete_mount_recovery(osb); | |
951 | ||
c271c5c2 SM |
952 | if (ocfs2_mount_local(osb)) |
953 | snprintf(nodestr, sizeof(nodestr), "local"); | |
954 | else | |
19fdb624 | 955 | snprintf(nodestr, sizeof(nodestr), "%u", osb->node_num); |
c271c5c2 SM |
956 | |
957 | printk(KERN_INFO "ocfs2: Mounting device (%s) on (node %s, slot %d) " | |
781ee3e2 | 958 | "with %s data mode.\n", |
c271c5c2 | 959 | osb->dev_str, nodestr, osb->slot_num, |
ccd979bd MF |
960 | osb->s_mount_opt & OCFS2_MOUNT_DATA_WRITEBACK ? "writeback" : |
961 | "ordered"); | |
962 | ||
963 | atomic_set(&osb->vol_state, VOLUME_MOUNTED); | |
964 | wake_up(&osb->osb_mount_event); | |
965 | ||
19ece546 JK |
966 | /* Now we can initialize quotas because we can afford to wait |
967 | * for cluster locks recovery now. That also means that truncation | |
968 | * log recovery can happen but that waits for proper quota setup */ | |
969 | if (!(sb->s_flags & MS_RDONLY)) { | |
970 | status = ocfs2_enable_quotas(osb); | |
971 | if (status < 0) { | |
972 | /* We have to err-out specially here because | |
973 | * s_root is already set */ | |
974 | mlog_errno(status); | |
975 | atomic_set(&osb->vol_state, VOLUME_DISABLED); | |
976 | wake_up(&osb->osb_mount_event); | |
977 | mlog_exit(status); | |
978 | return status; | |
979 | } | |
980 | } | |
981 | ||
982 | ocfs2_complete_quota_recovery(osb); | |
983 | ||
984 | /* Now we wake up again for processes waiting for quotas */ | |
985 | atomic_set(&osb->vol_state, VOLUME_MOUNTED_QUOTAS); | |
986 | wake_up(&osb->osb_mount_event); | |
987 | ||
ccd979bd MF |
988 | mlog_exit(status); |
989 | return status; | |
990 | ||
991 | read_super_error: | |
a81cb88b | 992 | brelse(bh); |
ccd979bd MF |
993 | |
994 | if (inode) | |
995 | iput(inode); | |
996 | ||
997 | if (osb) { | |
998 | atomic_set(&osb->vol_state, VOLUME_DISABLED); | |
999 | wake_up(&osb->osb_mount_event); | |
1000 | ocfs2_dismount_volume(sb, 1); | |
1001 | } | |
1002 | ||
1003 | mlog_exit(status); | |
1004 | return status; | |
1005 | } | |
1006 | ||
454e2398 DH |
1007 | static int ocfs2_get_sb(struct file_system_type *fs_type, |
1008 | int flags, | |
1009 | const char *dev_name, | |
1010 | void *data, | |
1011 | struct vfsmount *mnt) | |
ccd979bd | 1012 | { |
454e2398 DH |
1013 | return get_sb_bdev(fs_type, flags, dev_name, data, ocfs2_fill_super, |
1014 | mnt); | |
ccd979bd MF |
1015 | } |
1016 | ||
1017 | static struct file_system_type ocfs2_fs_type = { | |
1018 | .owner = THIS_MODULE, | |
1019 | .name = "ocfs2", | |
1020 | .get_sb = ocfs2_get_sb, /* is this called when we mount | |
1021 | * the fs? */ | |
1022 | .kill_sb = kill_block_super, /* set to the generic one | |
1023 | * right now, but do we | |
1024 | * need to change that? */ | |
1ba9da2f | 1025 | .fs_flags = FS_REQUIRES_DEV|FS_RENAME_DOES_D_MOVE, |
ccd979bd MF |
1026 | .next = NULL |
1027 | }; | |
1028 | ||
1029 | static int ocfs2_parse_options(struct super_block *sb, | |
1030 | char *options, | |
c0123ade | 1031 | struct mount_options *mopt, |
ccd979bd MF |
1032 | int is_remount) |
1033 | { | |
1034 | int status; | |
1035 | char *p; | |
1036 | ||
1037 | mlog_entry("remount: %d, options: \"%s\"\n", is_remount, | |
1038 | options ? options : "(none)"); | |
1039 | ||
d147b3d6 | 1040 | mopt->commit_interval = 0; |
c0123ade TY |
1041 | mopt->mount_opt = 0; |
1042 | mopt->atime_quantum = OCFS2_DEFAULT_ATIME_QUANTUM; | |
1043 | mopt->slot = OCFS2_INVALID_SLOT; | |
2fbe8d1e | 1044 | mopt->localalloc_opt = OCFS2_DEFAULT_LOCAL_ALLOC_SIZE; |
b61817e1 | 1045 | mopt->cluster_stack[0] = '\0'; |
ccd979bd MF |
1046 | |
1047 | if (!options) { | |
1048 | status = 1; | |
1049 | goto bail; | |
1050 | } | |
1051 | ||
1052 | while ((p = strsep(&options, ",")) != NULL) { | |
1053 | int token, option; | |
1054 | substring_t args[MAX_OPT_ARGS]; | |
1055 | ||
1056 | if (!*p) | |
1057 | continue; | |
1058 | ||
1059 | token = match_token(p, tokens, args); | |
1060 | switch (token) { | |
1061 | case Opt_hb_local: | |
c0123ade | 1062 | mopt->mount_opt |= OCFS2_MOUNT_HB_LOCAL; |
ccd979bd MF |
1063 | break; |
1064 | case Opt_hb_none: | |
c0123ade | 1065 | mopt->mount_opt &= ~OCFS2_MOUNT_HB_LOCAL; |
ccd979bd MF |
1066 | break; |
1067 | case Opt_barrier: | |
1068 | if (match_int(&args[0], &option)) { | |
1069 | status = 0; | |
1070 | goto bail; | |
1071 | } | |
1072 | if (option) | |
c0123ade | 1073 | mopt->mount_opt |= OCFS2_MOUNT_BARRIER; |
ccd979bd | 1074 | else |
c0123ade | 1075 | mopt->mount_opt &= ~OCFS2_MOUNT_BARRIER; |
ccd979bd MF |
1076 | break; |
1077 | case Opt_intr: | |
c0123ade | 1078 | mopt->mount_opt &= ~OCFS2_MOUNT_NOINTR; |
ccd979bd MF |
1079 | break; |
1080 | case Opt_nointr: | |
c0123ade | 1081 | mopt->mount_opt |= OCFS2_MOUNT_NOINTR; |
ccd979bd MF |
1082 | break; |
1083 | case Opt_err_panic: | |
c0123ade | 1084 | mopt->mount_opt |= OCFS2_MOUNT_ERRORS_PANIC; |
ccd979bd MF |
1085 | break; |
1086 | case Opt_err_ro: | |
c0123ade | 1087 | mopt->mount_opt &= ~OCFS2_MOUNT_ERRORS_PANIC; |
ccd979bd MF |
1088 | break; |
1089 | case Opt_data_ordered: | |
c0123ade | 1090 | mopt->mount_opt &= ~OCFS2_MOUNT_DATA_WRITEBACK; |
ccd979bd MF |
1091 | break; |
1092 | case Opt_data_writeback: | |
c0123ade | 1093 | mopt->mount_opt |= OCFS2_MOUNT_DATA_WRITEBACK; |
ccd979bd | 1094 | break; |
cf1d6c76 TY |
1095 | case Opt_user_xattr: |
1096 | mopt->mount_opt &= ~OCFS2_MOUNT_NOUSERXATTR; | |
1097 | break; | |
1098 | case Opt_nouser_xattr: | |
1099 | mopt->mount_opt |= OCFS2_MOUNT_NOUSERXATTR; | |
1100 | break; | |
7f1a37e3 TY |
1101 | case Opt_atime_quantum: |
1102 | if (match_int(&args[0], &option)) { | |
1103 | status = 0; | |
1104 | goto bail; | |
1105 | } | |
1106 | if (option >= 0) | |
c0123ade | 1107 | mopt->atime_quantum = option; |
7f1a37e3 | 1108 | break; |
baf4661a SM |
1109 | case Opt_slot: |
1110 | option = 0; | |
1111 | if (match_int(&args[0], &option)) { | |
1112 | status = 0; | |
1113 | goto bail; | |
1114 | } | |
1115 | if (option) | |
c0123ade | 1116 | mopt->slot = (s16)option; |
baf4661a | 1117 | break; |
d147b3d6 MF |
1118 | case Opt_commit: |
1119 | option = 0; | |
1120 | if (match_int(&args[0], &option)) { | |
1121 | status = 0; | |
1122 | goto bail; | |
1123 | } | |
1124 | if (option < 0) | |
1125 | return 0; | |
1126 | if (option == 0) | |
2b4e30fb | 1127 | option = JBD2_DEFAULT_MAX_COMMIT_AGE; |
d147b3d6 MF |
1128 | mopt->commit_interval = HZ * option; |
1129 | break; | |
2fbe8d1e SM |
1130 | case Opt_localalloc: |
1131 | option = 0; | |
1132 | if (match_int(&args[0], &option)) { | |
1133 | status = 0; | |
1134 | goto bail; | |
1135 | } | |
1136 | if (option >= 0 && (option <= ocfs2_local_alloc_size(sb) * 8)) | |
1137 | mopt->localalloc_opt = option; | |
1138 | break; | |
53fc622b MF |
1139 | case Opt_localflocks: |
1140 | /* | |
1141 | * Changing this during remount could race | |
1142 | * flock() requests, or "unbalance" existing | |
1143 | * ones (e.g., a lock is taken in one mode but | |
1144 | * dropped in the other). If users care enough | |
1145 | * to flip locking modes during remount, we | |
1146 | * could add a "local" flag to individual | |
1147 | * flock structures for proper tracking of | |
1148 | * state. | |
1149 | */ | |
1150 | if (!is_remount) | |
1151 | mopt->mount_opt |= OCFS2_MOUNT_LOCALFLOCKS; | |
1152 | break; | |
b61817e1 JB |
1153 | case Opt_stack: |
1154 | /* Check both that the option we were passed | |
1155 | * is of the right length and that it is a proper | |
1156 | * string of the right length. | |
1157 | */ | |
1158 | if (((args[0].to - args[0].from) != | |
1159 | OCFS2_STACK_LABEL_LEN) || | |
1160 | (strnlen(args[0].from, | |
1161 | OCFS2_STACK_LABEL_LEN) != | |
1162 | OCFS2_STACK_LABEL_LEN)) { | |
1163 | mlog(ML_ERROR, | |
1164 | "Invalid cluster_stack option\n"); | |
1165 | status = 0; | |
1166 | goto bail; | |
1167 | } | |
1168 | memcpy(mopt->cluster_stack, args[0].from, | |
1169 | OCFS2_STACK_LABEL_LEN); | |
1170 | mopt->cluster_stack[OCFS2_STACK_LABEL_LEN] = '\0'; | |
1171 | break; | |
12462f1d JB |
1172 | case Opt_inode64: |
1173 | mopt->mount_opt |= OCFS2_MOUNT_INODE64; | |
1174 | break; | |
19ece546 JK |
1175 | case Opt_usrquota: |
1176 | /* We check only on remount, otherwise features | |
1177 | * aren't yet initialized. */ | |
1178 | if (is_remount && !OCFS2_HAS_RO_COMPAT_FEATURE(sb, | |
1179 | OCFS2_FEATURE_RO_COMPAT_USRQUOTA)) { | |
1180 | mlog(ML_ERROR, "User quota requested but " | |
1181 | "filesystem feature is not set\n"); | |
1182 | status = 0; | |
1183 | goto bail; | |
1184 | } | |
1185 | mopt->mount_opt |= OCFS2_MOUNT_USRQUOTA; | |
1186 | break; | |
1187 | case Opt_grpquota: | |
1188 | if (is_remount && !OCFS2_HAS_RO_COMPAT_FEATURE(sb, | |
1189 | OCFS2_FEATURE_RO_COMPAT_GRPQUOTA)) { | |
1190 | mlog(ML_ERROR, "Group quota requested but " | |
1191 | "filesystem feature is not set\n"); | |
1192 | status = 0; | |
1193 | goto bail; | |
1194 | } | |
1195 | mopt->mount_opt |= OCFS2_MOUNT_GRPQUOTA; | |
1196 | break; | |
a68979b8 TY |
1197 | #ifdef CONFIG_OCFS2_FS_POSIX_ACL |
1198 | case Opt_acl: | |
1199 | mopt->mount_opt |= OCFS2_MOUNT_POSIX_ACL; | |
1200 | break; | |
1201 | case Opt_noacl: | |
1202 | mopt->mount_opt &= ~OCFS2_MOUNT_POSIX_ACL; | |
1203 | break; | |
1204 | #else | |
1205 | case Opt_acl: | |
1206 | case Opt_noacl: | |
1207 | printk(KERN_INFO "ocfs2 (no)acl options not supported\n"); | |
1208 | break; | |
1209 | #endif | |
ccd979bd MF |
1210 | default: |
1211 | mlog(ML_ERROR, | |
1212 | "Unrecognized mount option \"%s\" " | |
1213 | "or missing value\n", p); | |
1214 | status = 0; | |
1215 | goto bail; | |
1216 | } | |
1217 | } | |
1218 | ||
1219 | status = 1; | |
1220 | ||
1221 | bail: | |
1222 | mlog_exit(status); | |
1223 | return status; | |
1224 | } | |
1225 | ||
d550071c SM |
1226 | static int ocfs2_show_options(struct seq_file *s, struct vfsmount *mnt) |
1227 | { | |
1228 | struct ocfs2_super *osb = OCFS2_SB(mnt->mnt_sb); | |
1229 | unsigned long opts = osb->s_mount_opt; | |
ebcee4b5 | 1230 | unsigned int local_alloc_megs; |
d550071c SM |
1231 | |
1232 | if (opts & OCFS2_MOUNT_HB_LOCAL) | |
1233 | seq_printf(s, ",_netdev,heartbeat=local"); | |
1234 | else | |
1235 | seq_printf(s, ",heartbeat=none"); | |
1236 | ||
1237 | if (opts & OCFS2_MOUNT_NOINTR) | |
1238 | seq_printf(s, ",nointr"); | |
1239 | ||
1240 | if (opts & OCFS2_MOUNT_DATA_WRITEBACK) | |
1241 | seq_printf(s, ",data=writeback"); | |
1242 | else | |
1243 | seq_printf(s, ",data=ordered"); | |
1244 | ||
1245 | if (opts & OCFS2_MOUNT_BARRIER) | |
1246 | seq_printf(s, ",barrier=1"); | |
1247 | ||
1248 | if (opts & OCFS2_MOUNT_ERRORS_PANIC) | |
1249 | seq_printf(s, ",errors=panic"); | |
1250 | else | |
1251 | seq_printf(s, ",errors=remount-ro"); | |
1252 | ||
1253 | if (osb->preferred_slot != OCFS2_INVALID_SLOT) | |
1254 | seq_printf(s, ",preferred_slot=%d", osb->preferred_slot); | |
1255 | ||
1256 | if (osb->s_atime_quantum != OCFS2_DEFAULT_ATIME_QUANTUM) | |
1257 | seq_printf(s, ",atime_quantum=%u", osb->s_atime_quantum); | |
1258 | ||
d147b3d6 MF |
1259 | if (osb->osb_commit_interval) |
1260 | seq_printf(s, ",commit=%u", | |
1261 | (unsigned) (osb->osb_commit_interval / HZ)); | |
1262 | ||
ebcee4b5 MF |
1263 | local_alloc_megs = osb->local_alloc_bits >> (20 - osb->s_clustersize_bits); |
1264 | if (local_alloc_megs != OCFS2_DEFAULT_LOCAL_ALLOC_SIZE) | |
1265 | seq_printf(s, ",localalloc=%d", local_alloc_megs); | |
2fbe8d1e | 1266 | |
53fc622b MF |
1267 | if (opts & OCFS2_MOUNT_LOCALFLOCKS) |
1268 | seq_printf(s, ",localflocks,"); | |
1269 | ||
b61817e1 JB |
1270 | if (osb->osb_cluster_stack[0]) |
1271 | seq_printf(s, ",cluster_stack=%.*s", OCFS2_STACK_LABEL_LEN, | |
1272 | osb->osb_cluster_stack); | |
19ece546 JK |
1273 | if (opts & OCFS2_MOUNT_USRQUOTA) |
1274 | seq_printf(s, ",usrquota"); | |
1275 | if (opts & OCFS2_MOUNT_GRPQUOTA) | |
1276 | seq_printf(s, ",grpquota"); | |
b61817e1 | 1277 | |
b0f73cfc SM |
1278 | if (opts & OCFS2_MOUNT_NOUSERXATTR) |
1279 | seq_printf(s, ",nouser_xattr"); | |
1280 | else | |
1281 | seq_printf(s, ",user_xattr"); | |
1282 | ||
12462f1d JB |
1283 | if (opts & OCFS2_MOUNT_INODE64) |
1284 | seq_printf(s, ",inode64"); | |
1285 | ||
a68979b8 TY |
1286 | #ifdef CONFIG_OCFS2_FS_POSIX_ACL |
1287 | if (opts & OCFS2_MOUNT_POSIX_ACL) | |
1288 | seq_printf(s, ",acl"); | |
1289 | else | |
1290 | seq_printf(s, ",noacl"); | |
1291 | #endif | |
1292 | ||
d550071c SM |
1293 | return 0; |
1294 | } | |
1295 | ||
ccd979bd MF |
1296 | static int __init ocfs2_init(void) |
1297 | { | |
1298 | int status; | |
1299 | ||
1300 | mlog_entry_void(); | |
1301 | ||
1302 | ocfs2_print_version(); | |
1303 | ||
ccd979bd MF |
1304 | status = init_ocfs2_uptodate_cache(); |
1305 | if (status < 0) { | |
1306 | mlog_errno(status); | |
1307 | goto leave; | |
1308 | } | |
1309 | ||
1310 | status = ocfs2_initialize_mem_caches(); | |
1311 | if (status < 0) { | |
1312 | mlog_errno(status); | |
1313 | goto leave; | |
1314 | } | |
1315 | ||
1316 | ocfs2_wq = create_singlethread_workqueue("ocfs2_wq"); | |
1317 | if (!ocfs2_wq) { | |
1318 | status = -ENOMEM; | |
1319 | goto leave; | |
1320 | } | |
1321 | ||
ccd979bd MF |
1322 | ocfs2_debugfs_root = debugfs_create_dir("ocfs2", NULL); |
1323 | if (!ocfs2_debugfs_root) { | |
1324 | status = -EFAULT; | |
1325 | mlog(ML_ERROR, "Unable to create ocfs2 debugfs root.\n"); | |
1326 | } | |
1327 | ||
171bf93c MF |
1328 | status = ocfs2_quota_setup(); |
1329 | if (status) | |
1330 | goto leave; | |
1331 | ||
63e0c48a JB |
1332 | ocfs2_set_locking_protocol(); |
1333 | ||
9e33d69f | 1334 | status = register_quota_format(&ocfs2_quota_format); |
ccd979bd MF |
1335 | leave: |
1336 | if (status < 0) { | |
171bf93c | 1337 | ocfs2_quota_shutdown(); |
ccd979bd MF |
1338 | ocfs2_free_mem_caches(); |
1339 | exit_ocfs2_uptodate_cache(); | |
ccd979bd MF |
1340 | } |
1341 | ||
1342 | mlog_exit(status); | |
1343 | ||
1344 | if (status >= 0) { | |
1345 | return register_filesystem(&ocfs2_fs_type); | |
1346 | } else | |
1347 | return -1; | |
1348 | } | |
1349 | ||
1350 | static void __exit ocfs2_exit(void) | |
1351 | { | |
1352 | mlog_entry_void(); | |
1353 | ||
171bf93c MF |
1354 | ocfs2_quota_shutdown(); |
1355 | ||
ccd979bd MF |
1356 | if (ocfs2_wq) { |
1357 | flush_workqueue(ocfs2_wq); | |
1358 | destroy_workqueue(ocfs2_wq); | |
1359 | } | |
1360 | ||
9e33d69f JK |
1361 | unregister_quota_format(&ocfs2_quota_format); |
1362 | ||
ccd979bd MF |
1363 | debugfs_remove(ocfs2_debugfs_root); |
1364 | ||
1365 | ocfs2_free_mem_caches(); | |
1366 | ||
1367 | unregister_filesystem(&ocfs2_fs_type); | |
1368 | ||
ccd979bd MF |
1369 | exit_ocfs2_uptodate_cache(); |
1370 | ||
1371 | mlog_exit_void(); | |
1372 | } | |
1373 | ||
1374 | static void ocfs2_put_super(struct super_block *sb) | |
1375 | { | |
1376 | mlog_entry("(0x%p)\n", sb); | |
1377 | ||
1378 | ocfs2_sync_blockdev(sb); | |
1379 | ocfs2_dismount_volume(sb, 0); | |
1380 | ||
1381 | mlog_exit_void(); | |
1382 | } | |
1383 | ||
726c3342 | 1384 | static int ocfs2_statfs(struct dentry *dentry, struct kstatfs *buf) |
ccd979bd MF |
1385 | { |
1386 | struct ocfs2_super *osb; | |
1387 | u32 numbits, freebits; | |
1388 | int status; | |
1389 | struct ocfs2_dinode *bm_lock; | |
1390 | struct buffer_head *bh = NULL; | |
1391 | struct inode *inode = NULL; | |
1392 | ||
726c3342 | 1393 | mlog_entry("(%p, %p)\n", dentry->d_sb, buf); |
ccd979bd | 1394 | |
726c3342 | 1395 | osb = OCFS2_SB(dentry->d_sb); |
ccd979bd MF |
1396 | |
1397 | inode = ocfs2_get_system_file_inode(osb, | |
1398 | GLOBAL_BITMAP_SYSTEM_INODE, | |
1399 | OCFS2_INVALID_SLOT); | |
1400 | if (!inode) { | |
1401 | mlog(ML_ERROR, "failed to get bitmap inode\n"); | |
1402 | status = -EIO; | |
1403 | goto bail; | |
1404 | } | |
1405 | ||
e63aecb6 | 1406 | status = ocfs2_inode_lock(inode, &bh, 0); |
ccd979bd MF |
1407 | if (status < 0) { |
1408 | mlog_errno(status); | |
1409 | goto bail; | |
1410 | } | |
1411 | ||
1412 | bm_lock = (struct ocfs2_dinode *) bh->b_data; | |
1413 | ||
1414 | numbits = le32_to_cpu(bm_lock->id1.bitmap1.i_total); | |
1415 | freebits = numbits - le32_to_cpu(bm_lock->id1.bitmap1.i_used); | |
1416 | ||
1417 | buf->f_type = OCFS2_SUPER_MAGIC; | |
726c3342 | 1418 | buf->f_bsize = dentry->d_sb->s_blocksize; |
ccd979bd MF |
1419 | buf->f_namelen = OCFS2_MAX_FILENAME_LEN; |
1420 | buf->f_blocks = ((sector_t) numbits) * | |
1421 | (osb->s_clustersize >> osb->sb->s_blocksize_bits); | |
1422 | buf->f_bfree = ((sector_t) freebits) * | |
1423 | (osb->s_clustersize >> osb->sb->s_blocksize_bits); | |
1424 | buf->f_bavail = buf->f_bfree; | |
1425 | buf->f_files = numbits; | |
1426 | buf->f_ffree = freebits; | |
1427 | ||
1428 | brelse(bh); | |
1429 | ||
e63aecb6 | 1430 | ocfs2_inode_unlock(inode, 0); |
ccd979bd MF |
1431 | status = 0; |
1432 | bail: | |
1433 | if (inode) | |
1434 | iput(inode); | |
1435 | ||
1436 | mlog_exit(status); | |
1437 | ||
1438 | return status; | |
1439 | } | |
1440 | ||
51cc5068 | 1441 | static void ocfs2_inode_init_once(void *data) |
ccd979bd MF |
1442 | { |
1443 | struct ocfs2_inode_info *oi = data; | |
1444 | ||
a35afb83 CL |
1445 | oi->ip_flags = 0; |
1446 | oi->ip_open_count = 0; | |
1447 | spin_lock_init(&oi->ip_lock); | |
1448 | ocfs2_extent_map_init(&oi->vfs_inode); | |
1449 | INIT_LIST_HEAD(&oi->ip_io_markers); | |
1450 | oi->ip_created_trans = 0; | |
1451 | oi->ip_last_trans = 0; | |
1452 | oi->ip_dir_start_lookup = 0; | |
ccd979bd | 1453 | |
a35afb83 | 1454 | init_rwsem(&oi->ip_alloc_sem); |
cf1d6c76 | 1455 | init_rwsem(&oi->ip_xattr_sem); |
a35afb83 | 1456 | mutex_init(&oi->ip_io_mutex); |
ccd979bd | 1457 | |
a35afb83 CL |
1458 | oi->ip_blkno = 0ULL; |
1459 | oi->ip_clusters = 0; | |
ccd979bd | 1460 | |
a35afb83 | 1461 | ocfs2_lock_res_init_once(&oi->ip_rw_lockres); |
e63aecb6 | 1462 | ocfs2_lock_res_init_once(&oi->ip_inode_lockres); |
a35afb83 | 1463 | ocfs2_lock_res_init_once(&oi->ip_open_lockres); |
ccd979bd | 1464 | |
a35afb83 | 1465 | ocfs2_metadata_cache_init(&oi->vfs_inode); |
ccd979bd | 1466 | |
a35afb83 | 1467 | inode_init_once(&oi->vfs_inode); |
ccd979bd MF |
1468 | } |
1469 | ||
1470 | static int ocfs2_initialize_mem_caches(void) | |
1471 | { | |
1472 | ocfs2_inode_cachep = kmem_cache_create("ocfs2_inode_cache", | |
fffb60f9 PJ |
1473 | sizeof(struct ocfs2_inode_info), |
1474 | 0, | |
1475 | (SLAB_HWCACHE_ALIGN|SLAB_RECLAIM_ACCOUNT| | |
1476 | SLAB_MEM_SPREAD), | |
20c2df83 | 1477 | ocfs2_inode_init_once); |
9e33d69f JK |
1478 | ocfs2_dquot_cachep = kmem_cache_create("ocfs2_dquot_cache", |
1479 | sizeof(struct ocfs2_dquot), | |
1480 | 0, | |
1481 | (SLAB_HWCACHE_ALIGN|SLAB_RECLAIM_ACCOUNT| | |
1482 | SLAB_MEM_SPREAD), | |
1483 | NULL); | |
1484 | ocfs2_qf_chunk_cachep = kmem_cache_create("ocfs2_qf_chunk_cache", | |
1485 | sizeof(struct ocfs2_quota_chunk), | |
1486 | 0, | |
1487 | (SLAB_RECLAIM_ACCOUNT|SLAB_MEM_SPREAD), | |
1488 | NULL); | |
1489 | if (!ocfs2_inode_cachep || !ocfs2_dquot_cachep || | |
1490 | !ocfs2_qf_chunk_cachep) { | |
1491 | if (ocfs2_inode_cachep) | |
1492 | kmem_cache_destroy(ocfs2_inode_cachep); | |
1493 | if (ocfs2_dquot_cachep) | |
1494 | kmem_cache_destroy(ocfs2_dquot_cachep); | |
1495 | if (ocfs2_qf_chunk_cachep) | |
1496 | kmem_cache_destroy(ocfs2_qf_chunk_cachep); | |
ccd979bd | 1497 | return -ENOMEM; |
9e33d69f | 1498 | } |
ccd979bd | 1499 | |
ccd979bd MF |
1500 | return 0; |
1501 | } | |
1502 | ||
1503 | static void ocfs2_free_mem_caches(void) | |
1504 | { | |
1505 | if (ocfs2_inode_cachep) | |
1506 | kmem_cache_destroy(ocfs2_inode_cachep); | |
ccd979bd | 1507 | ocfs2_inode_cachep = NULL; |
9e33d69f JK |
1508 | |
1509 | if (ocfs2_dquot_cachep) | |
1510 | kmem_cache_destroy(ocfs2_dquot_cachep); | |
1511 | ocfs2_dquot_cachep = NULL; | |
1512 | ||
1513 | if (ocfs2_qf_chunk_cachep) | |
1514 | kmem_cache_destroy(ocfs2_qf_chunk_cachep); | |
1515 | ocfs2_qf_chunk_cachep = NULL; | |
ccd979bd MF |
1516 | } |
1517 | ||
1518 | static int ocfs2_get_sector(struct super_block *sb, | |
1519 | struct buffer_head **bh, | |
1520 | int block, | |
1521 | int sect_size) | |
1522 | { | |
1523 | if (!sb_set_blocksize(sb, sect_size)) { | |
1524 | mlog(ML_ERROR, "unable to set blocksize\n"); | |
1525 | return -EIO; | |
1526 | } | |
1527 | ||
1528 | *bh = sb_getblk(sb, block); | |
1529 | if (!*bh) { | |
1530 | mlog_errno(-EIO); | |
1531 | return -EIO; | |
1532 | } | |
1533 | lock_buffer(*bh); | |
1534 | if (!buffer_dirty(*bh)) | |
1535 | clear_buffer_uptodate(*bh); | |
1536 | unlock_buffer(*bh); | |
1537 | ll_rw_block(READ, 1, bh); | |
1538 | wait_on_buffer(*bh); | |
1539 | return 0; | |
1540 | } | |
1541 | ||
ccd979bd MF |
1542 | static int ocfs2_mount_volume(struct super_block *sb) |
1543 | { | |
1544 | int status = 0; | |
1545 | int unlock_super = 0; | |
1546 | struct ocfs2_super *osb = OCFS2_SB(sb); | |
1547 | ||
1548 | mlog_entry_void(); | |
1549 | ||
1550 | if (ocfs2_is_hard_readonly(osb)) | |
1551 | goto leave; | |
1552 | ||
ccd979bd MF |
1553 | status = ocfs2_dlm_init(osb); |
1554 | if (status < 0) { | |
1555 | mlog_errno(status); | |
1556 | goto leave; | |
1557 | } | |
1558 | ||
ccd979bd MF |
1559 | status = ocfs2_super_lock(osb, 1); |
1560 | if (status < 0) { | |
1561 | mlog_errno(status); | |
1562 | goto leave; | |
1563 | } | |
1564 | unlock_super = 1; | |
1565 | ||
1566 | /* This will load up the node map and add ourselves to it. */ | |
1567 | status = ocfs2_find_slot(osb); | |
1568 | if (status < 0) { | |
1569 | mlog_errno(status); | |
1570 | goto leave; | |
1571 | } | |
1572 | ||
ccd979bd MF |
1573 | /* load all node-local system inodes */ |
1574 | status = ocfs2_init_local_system_inodes(osb); | |
1575 | if (status < 0) { | |
1576 | mlog_errno(status); | |
1577 | goto leave; | |
1578 | } | |
1579 | ||
1580 | status = ocfs2_check_volume(osb); | |
1581 | if (status < 0) { | |
1582 | mlog_errno(status); | |
1583 | goto leave; | |
1584 | } | |
1585 | ||
1586 | status = ocfs2_truncate_log_init(osb); | |
1587 | if (status < 0) { | |
1588 | mlog_errno(status); | |
1589 | goto leave; | |
1590 | } | |
1591 | ||
c271c5c2 SM |
1592 | if (ocfs2_mount_local(osb)) |
1593 | goto leave; | |
1594 | ||
ccd979bd MF |
1595 | leave: |
1596 | if (unlock_super) | |
1597 | ocfs2_super_unlock(osb, 1); | |
1598 | ||
1599 | mlog_exit(status); | |
1600 | return status; | |
1601 | } | |
1602 | ||
ccd979bd MF |
1603 | static void ocfs2_dismount_volume(struct super_block *sb, int mnt_err) |
1604 | { | |
286eaa95 | 1605 | int tmp, hangup_needed = 0; |
ccd979bd | 1606 | struct ocfs2_super *osb = NULL; |
c271c5c2 | 1607 | char nodestr[8]; |
ccd979bd MF |
1608 | |
1609 | mlog_entry("(0x%p)\n", sb); | |
1610 | ||
1611 | BUG_ON(!sb); | |
1612 | osb = OCFS2_SB(sb); | |
1613 | BUG_ON(!osb); | |
1614 | ||
19ece546 JK |
1615 | ocfs2_disable_quotas(osb); |
1616 | ||
ccd979bd MF |
1617 | ocfs2_shutdown_local_alloc(osb); |
1618 | ||
1619 | ocfs2_truncate_log_shutdown(osb); | |
1620 | ||
553abd04 JB |
1621 | /* This will disable recovery and flush any recovery work. */ |
1622 | ocfs2_recovery_exit(osb); | |
ccd979bd MF |
1623 | |
1624 | ocfs2_journal_shutdown(osb); | |
1625 | ||
1626 | ocfs2_sync_blockdev(sb); | |
1627 | ||
4670c46d JB |
1628 | /* No cluster connection means we've failed during mount, so skip |
1629 | * all the steps which depended on that to complete. */ | |
1630 | if (osb->cconn) { | |
ccd979bd MF |
1631 | tmp = ocfs2_super_lock(osb, 1); |
1632 | if (tmp < 0) { | |
1633 | mlog_errno(tmp); | |
1634 | return; | |
1635 | } | |
19b613d4 | 1636 | } |
ccd979bd | 1637 | |
19b613d4 MF |
1638 | if (osb->slot_num != OCFS2_INVALID_SLOT) |
1639 | ocfs2_put_slot(osb); | |
ccd979bd | 1640 | |
4670c46d | 1641 | if (osb->cconn) |
ccd979bd | 1642 | ocfs2_super_unlock(osb, 1); |
ccd979bd MF |
1643 | |
1644 | ocfs2_release_system_inodes(osb); | |
1645 | ||
6953b4c0 | 1646 | /* |
6953b4c0 JB |
1647 | * If we're dismounting due to mount error, mount.ocfs2 will clean |
1648 | * up heartbeat. If we're a local mount, there is no heartbeat. | |
1649 | * If we failed before we got a uuid_str yet, we can't stop | |
1650 | * heartbeat. Otherwise, do it. | |
1651 | */ | |
1652 | if (!mnt_err && !ocfs2_mount_local(osb) && osb->uuid_str) | |
286eaa95 JB |
1653 | hangup_needed = 1; |
1654 | ||
1655 | if (osb->cconn) | |
1656 | ocfs2_dlm_shutdown(osb, hangup_needed); | |
1657 | ||
1658 | debugfs_remove(osb->osb_debug_root); | |
1659 | ||
1660 | if (hangup_needed) | |
6953b4c0 | 1661 | ocfs2_cluster_hangup(osb->uuid_str, strlen(osb->uuid_str)); |
ccd979bd MF |
1662 | |
1663 | atomic_set(&osb->vol_state, VOLUME_DISMOUNTED); | |
1664 | ||
c271c5c2 SM |
1665 | if (ocfs2_mount_local(osb)) |
1666 | snprintf(nodestr, sizeof(nodestr), "local"); | |
1667 | else | |
19fdb624 | 1668 | snprintf(nodestr, sizeof(nodestr), "%u", osb->node_num); |
c271c5c2 SM |
1669 | |
1670 | printk(KERN_INFO "ocfs2: Unmounting device (%s) on (node %s)\n", | |
1671 | osb->dev_str, nodestr); | |
ccd979bd MF |
1672 | |
1673 | ocfs2_delete_osb(osb); | |
1674 | kfree(osb); | |
1675 | sb->s_dev = 0; | |
1676 | sb->s_fs_info = NULL; | |
1677 | } | |
1678 | ||
1679 | static int ocfs2_setup_osb_uuid(struct ocfs2_super *osb, const unsigned char *uuid, | |
1680 | unsigned uuid_bytes) | |
1681 | { | |
1682 | int i, ret; | |
1683 | char *ptr; | |
1684 | ||
1685 | BUG_ON(uuid_bytes != OCFS2_VOL_UUID_LEN); | |
1686 | ||
cd861280 | 1687 | osb->uuid_str = kzalloc(OCFS2_VOL_UUID_LEN * 2 + 1, GFP_KERNEL); |
ccd979bd MF |
1688 | if (osb->uuid_str == NULL) |
1689 | return -ENOMEM; | |
1690 | ||
ccd979bd MF |
1691 | for (i = 0, ptr = osb->uuid_str; i < OCFS2_VOL_UUID_LEN; i++) { |
1692 | /* print with null */ | |
1693 | ret = snprintf(ptr, 3, "%02X", uuid[i]); | |
1694 | if (ret != 2) /* drop super cleans up */ | |
1695 | return -EINVAL; | |
1696 | /* then only advance past the last char */ | |
1697 | ptr += 2; | |
1698 | } | |
1699 | ||
1700 | return 0; | |
1701 | } | |
1702 | ||
1703 | static int ocfs2_initialize_super(struct super_block *sb, | |
1704 | struct buffer_head *bh, | |
1705 | int sector_size) | |
1706 | { | |
bddb8eb3 | 1707 | int status; |
5a254031 MF |
1708 | int i, cbits, bbits; |
1709 | struct ocfs2_dinode *di = (struct ocfs2_dinode *)bh->b_data; | |
ccd979bd | 1710 | struct inode *inode = NULL; |
ccd979bd MF |
1711 | struct ocfs2_journal *journal; |
1712 | __le32 uuid_net_key; | |
1713 | struct ocfs2_super *osb; | |
1714 | ||
1715 | mlog_entry_void(); | |
1716 | ||
cd861280 | 1717 | osb = kzalloc(sizeof(struct ocfs2_super), GFP_KERNEL); |
ccd979bd MF |
1718 | if (!osb) { |
1719 | status = -ENOMEM; | |
1720 | mlog_errno(status); | |
1721 | goto bail; | |
1722 | } | |
1723 | ||
1724 | sb->s_fs_info = osb; | |
1725 | sb->s_op = &ocfs2_sops; | |
1726 | sb->s_export_op = &ocfs2_export_ops; | |
19ece546 JK |
1727 | sb->s_qcop = &ocfs2_quotactl_ops; |
1728 | sb->dq_op = &ocfs2_quota_operations; | |
cf1d6c76 | 1729 | sb->s_xattr = ocfs2_xattr_handlers; |
e0dceaf0 | 1730 | sb->s_time_gran = 1; |
ccd979bd MF |
1731 | sb->s_flags |= MS_NOATIME; |
1732 | /* this is needed to support O_LARGEFILE */ | |
5a254031 MF |
1733 | cbits = le32_to_cpu(di->id2.i_super.s_clustersize_bits); |
1734 | bbits = le32_to_cpu(di->id2.i_super.s_blocksize_bits); | |
1735 | sb->s_maxbytes = ocfs2_max_file_offset(bbits, cbits); | |
ccd979bd MF |
1736 | |
1737 | osb->sb = sb; | |
1738 | /* Save off for ocfs2_rw_direct */ | |
1739 | osb->s_sectsize_bits = blksize_bits(sector_size); | |
ebdec83b | 1740 | BUG_ON(!osb->s_sectsize_bits); |
ccd979bd | 1741 | |
34d024f8 MF |
1742 | spin_lock_init(&osb->dc_task_lock); |
1743 | init_waitqueue_head(&osb->dc_event); | |
1744 | osb->dc_work_sequence = 0; | |
1745 | osb->dc_wake_sequence = 0; | |
ccd979bd MF |
1746 | INIT_LIST_HEAD(&osb->blocked_lock_list); |
1747 | osb->blocked_lock_count = 0; | |
ccd979bd | 1748 | spin_lock_init(&osb->osb_lock); |
4d0ddb2c | 1749 | ocfs2_init_inode_steal_slot(osb); |
ccd979bd MF |
1750 | |
1751 | atomic_set(&osb->alloc_stats.moves, 0); | |
1752 | atomic_set(&osb->alloc_stats.local_data, 0); | |
1753 | atomic_set(&osb->alloc_stats.bitmap_data, 0); | |
1754 | atomic_set(&osb->alloc_stats.bg_allocs, 0); | |
1755 | atomic_set(&osb->alloc_stats.bg_extends, 0); | |
1756 | ||
1757 | ocfs2_init_node_maps(osb); | |
1758 | ||
1759 | snprintf(osb->dev_str, sizeof(osb->dev_str), "%u,%u", | |
1760 | MAJOR(osb->sb->s_dev), MINOR(osb->sb->s_dev)); | |
1761 | ||
553abd04 JB |
1762 | status = ocfs2_recovery_init(osb); |
1763 | if (status) { | |
1764 | mlog(ML_ERROR, "Unable to initialize recovery state\n"); | |
1765 | mlog_errno(status); | |
1766 | goto bail; | |
1767 | } | |
ccd979bd MF |
1768 | |
1769 | init_waitqueue_head(&osb->checkpoint_event); | |
1770 | atomic_set(&osb->needs_checkpoint, 0); | |
1771 | ||
7f1a37e3 TY |
1772 | osb->s_atime_quantum = OCFS2_DEFAULT_ATIME_QUANTUM; |
1773 | ||
ccd979bd MF |
1774 | osb->slot_num = OCFS2_INVALID_SLOT; |
1775 | ||
8154da3d TY |
1776 | osb->s_xattr_inline_size = le16_to_cpu( |
1777 | di->id2.i_super.s_xattr_inline_size); | |
fdd77704 | 1778 | |
ccd979bd MF |
1779 | osb->local_alloc_state = OCFS2_LA_UNUSED; |
1780 | osb->local_alloc_bh = NULL; | |
9c7af40b | 1781 | INIT_DELAYED_WORK(&osb->la_enable_wq, ocfs2_la_enable_worker); |
ccd979bd | 1782 | |
ccd979bd MF |
1783 | init_waitqueue_head(&osb->osb_mount_event); |
1784 | ||
1785 | osb->vol_label = kmalloc(OCFS2_MAX_VOL_LABEL_LEN, GFP_KERNEL); | |
1786 | if (!osb->vol_label) { | |
1787 | mlog(ML_ERROR, "unable to alloc vol label\n"); | |
1788 | status = -ENOMEM; | |
1789 | goto bail; | |
1790 | } | |
1791 | ||
ccd979bd MF |
1792 | osb->max_slots = le16_to_cpu(di->id2.i_super.s_max_slots); |
1793 | if (osb->max_slots > OCFS2_MAX_SLOTS || osb->max_slots == 0) { | |
1794 | mlog(ML_ERROR, "Invalid number of node slots (%u)\n", | |
1795 | osb->max_slots); | |
1796 | status = -EINVAL; | |
1797 | goto bail; | |
1798 | } | |
781ee3e2 | 1799 | mlog(0, "max_slots for this device: %u\n", osb->max_slots); |
ccd979bd | 1800 | |
539d8264 SM |
1801 | osb->slot_recovery_generations = |
1802 | kcalloc(osb->max_slots, sizeof(*osb->slot_recovery_generations), | |
1803 | GFP_KERNEL); | |
1804 | if (!osb->slot_recovery_generations) { | |
1805 | status = -ENOMEM; | |
1806 | mlog_errno(status); | |
1807 | goto bail; | |
1808 | } | |
1809 | ||
b4df6ed8 MF |
1810 | init_waitqueue_head(&osb->osb_wipe_event); |
1811 | osb->osb_orphan_wipes = kcalloc(osb->max_slots, | |
1812 | sizeof(*osb->osb_orphan_wipes), | |
1813 | GFP_KERNEL); | |
1814 | if (!osb->osb_orphan_wipes) { | |
1815 | status = -ENOMEM; | |
1816 | mlog_errno(status); | |
1817 | goto bail; | |
1818 | } | |
1819 | ||
ccd979bd MF |
1820 | osb->s_feature_compat = |
1821 | le32_to_cpu(OCFS2_RAW_SB(di)->s_feature_compat); | |
1822 | osb->s_feature_ro_compat = | |
1823 | le32_to_cpu(OCFS2_RAW_SB(di)->s_feature_ro_compat); | |
1824 | osb->s_feature_incompat = | |
1825 | le32_to_cpu(OCFS2_RAW_SB(di)->s_feature_incompat); | |
1826 | ||
1827 | if ((i = OCFS2_HAS_INCOMPAT_FEATURE(osb->sb, ~OCFS2_FEATURE_INCOMPAT_SUPP))) { | |
1828 | mlog(ML_ERROR, "couldn't mount because of unsupported " | |
1829 | "optional features (%x).\n", i); | |
1830 | status = -EINVAL; | |
1831 | goto bail; | |
1832 | } | |
1833 | if (!(osb->sb->s_flags & MS_RDONLY) && | |
1834 | (i = OCFS2_HAS_RO_COMPAT_FEATURE(osb->sb, ~OCFS2_FEATURE_RO_COMPAT_SUPP))) { | |
1835 | mlog(ML_ERROR, "couldn't mount RDWR because of " | |
1836 | "unsupported optional features (%x).\n", i); | |
1837 | status = -EINVAL; | |
1838 | goto bail; | |
1839 | } | |
1840 | ||
b61817e1 JB |
1841 | if (ocfs2_userspace_stack(osb)) { |
1842 | memcpy(osb->osb_cluster_stack, | |
1843 | OCFS2_RAW_SB(di)->s_cluster_info.ci_stack, | |
1844 | OCFS2_STACK_LABEL_LEN); | |
1845 | osb->osb_cluster_stack[OCFS2_STACK_LABEL_LEN] = '\0'; | |
1846 | if (strlen(osb->osb_cluster_stack) != OCFS2_STACK_LABEL_LEN) { | |
1847 | mlog(ML_ERROR, | |
1848 | "couldn't mount because of an invalid " | |
1849 | "cluster stack label (%s) \n", | |
1850 | osb->osb_cluster_stack); | |
1851 | status = -EINVAL; | |
1852 | goto bail; | |
1853 | } | |
1854 | } else { | |
1855 | /* The empty string is identical with classic tools that | |
1856 | * don't know about s_cluster_info. */ | |
1857 | osb->osb_cluster_stack[0] = '\0'; | |
1858 | } | |
1859 | ||
ccd979bd MF |
1860 | get_random_bytes(&osb->s_next_generation, sizeof(u32)); |
1861 | ||
1862 | /* FIXME | |
1863 | * This should be done in ocfs2_journal_init(), but unknown | |
1864 | * ordering issues will cause the filesystem to crash. | |
1865 | * If anyone wants to figure out what part of the code | |
1866 | * refers to osb->journal before ocfs2_journal_init() is run, | |
1867 | * be my guest. | |
1868 | */ | |
1869 | /* initialize our journal structure */ | |
1870 | ||
cd861280 | 1871 | journal = kzalloc(sizeof(struct ocfs2_journal), GFP_KERNEL); |
ccd979bd MF |
1872 | if (!journal) { |
1873 | mlog(ML_ERROR, "unable to alloc journal\n"); | |
1874 | status = -ENOMEM; | |
1875 | goto bail; | |
1876 | } | |
1877 | osb->journal = journal; | |
1878 | journal->j_osb = osb; | |
1879 | ||
1880 | atomic_set(&journal->j_num_trans, 0); | |
1881 | init_rwsem(&journal->j_trans_barrier); | |
1882 | init_waitqueue_head(&journal->j_checkpointed); | |
1883 | spin_lock_init(&journal->j_lock); | |
1884 | journal->j_trans_id = (unsigned long) 1; | |
1885 | INIT_LIST_HEAD(&journal->j_la_cleanups); | |
c4028958 | 1886 | INIT_WORK(&journal->j_recovery_work, ocfs2_complete_recovery); |
ccd979bd MF |
1887 | journal->j_state = OCFS2_JOURNAL_FREE; |
1888 | ||
1889 | /* get some pseudo constants for clustersize bits */ | |
1890 | osb->s_clustersize_bits = | |
1891 | le32_to_cpu(di->id2.i_super.s_clustersize_bits); | |
1892 | osb->s_clustersize = 1 << osb->s_clustersize_bits; | |
1893 | mlog(0, "clusterbits=%d\n", osb->s_clustersize_bits); | |
1894 | ||
1895 | if (osb->s_clustersize < OCFS2_MIN_CLUSTERSIZE || | |
1896 | osb->s_clustersize > OCFS2_MAX_CLUSTERSIZE) { | |
1897 | mlog(ML_ERROR, "Volume has invalid cluster size (%d)\n", | |
1898 | osb->s_clustersize); | |
1899 | status = -EINVAL; | |
1900 | goto bail; | |
1901 | } | |
1902 | ||
1903 | if (ocfs2_clusters_to_blocks(osb->sb, le32_to_cpu(di->i_clusters) - 1) | |
1904 | > (u32)~0UL) { | |
1905 | mlog(ML_ERROR, "Volume might try to write to blocks beyond " | |
1906 | "what jbd can address in 32 bits.\n"); | |
1907 | status = -EINVAL; | |
1908 | goto bail; | |
1909 | } | |
1910 | ||
1911 | if (ocfs2_setup_osb_uuid(osb, di->id2.i_super.s_uuid, | |
1912 | sizeof(di->id2.i_super.s_uuid))) { | |
1913 | mlog(ML_ERROR, "Out of memory trying to setup our uuid.\n"); | |
1914 | status = -ENOMEM; | |
1915 | goto bail; | |
1916 | } | |
1917 | ||
78427043 | 1918 | memcpy(&uuid_net_key, di->id2.i_super.s_uuid, sizeof(uuid_net_key)); |
ccd979bd MF |
1919 | |
1920 | strncpy(osb->vol_label, di->id2.i_super.s_label, 63); | |
1921 | osb->vol_label[63] = '\0'; | |
1922 | osb->root_blkno = le64_to_cpu(di->id2.i_super.s_root_blkno); | |
1923 | osb->system_dir_blkno = le64_to_cpu(di->id2.i_super.s_system_dir_blkno); | |
1924 | osb->first_cluster_group_blkno = | |
1925 | le64_to_cpu(di->id2.i_super.s_first_cluster_group); | |
1926 | osb->fs_generation = le32_to_cpu(di->i_fs_generation); | |
cf1d6c76 | 1927 | osb->uuid_hash = le32_to_cpu(di->id2.i_super.s_uuid_hash); |
ccd979bd MF |
1928 | mlog(0, "vol_label: %s\n", osb->vol_label); |
1929 | mlog(0, "uuid: %s\n", osb->uuid_str); | |
b0697053 MF |
1930 | mlog(0, "root_blkno=%llu, system_dir_blkno=%llu\n", |
1931 | (unsigned long long)osb->root_blkno, | |
1932 | (unsigned long long)osb->system_dir_blkno); | |
ccd979bd MF |
1933 | |
1934 | osb->osb_dlm_debug = ocfs2_new_dlm_debug(); | |
1935 | if (!osb->osb_dlm_debug) { | |
1936 | status = -ENOMEM; | |
1937 | mlog_errno(status); | |
1938 | goto bail; | |
1939 | } | |
1940 | ||
1941 | atomic_set(&osb->vol_state, VOLUME_INIT); | |
1942 | ||
1943 | /* load root, system_dir, and all global system inodes */ | |
1944 | status = ocfs2_init_global_system_inodes(osb); | |
1945 | if (status < 0) { | |
1946 | mlog_errno(status); | |
1947 | goto bail; | |
1948 | } | |
1949 | ||
1950 | /* | |
1951 | * global bitmap | |
1952 | */ | |
1953 | inode = ocfs2_get_system_file_inode(osb, GLOBAL_BITMAP_SYSTEM_INODE, | |
1954 | OCFS2_INVALID_SLOT); | |
1955 | if (!inode) { | |
1956 | status = -EINVAL; | |
1957 | mlog_errno(status); | |
1958 | goto bail; | |
1959 | } | |
1960 | ||
1961 | osb->bitmap_blkno = OCFS2_I(inode)->ip_blkno; | |
ccd979bd | 1962 | iput(inode); |
ccd979bd | 1963 | |
e9d578a8 | 1964 | osb->bitmap_cpg = ocfs2_group_bitmap_size(sb) * 8; |
ccd979bd MF |
1965 | |
1966 | status = ocfs2_init_slot_info(osb); | |
1967 | if (status < 0) { | |
1968 | mlog_errno(status); | |
1969 | goto bail; | |
1970 | } | |
1971 | ||
ccd979bd MF |
1972 | bail: |
1973 | mlog_exit(status); | |
1974 | return status; | |
1975 | } | |
1976 | ||
1977 | /* | |
1978 | * will return: -EAGAIN if it is ok to keep searching for superblocks | |
1979 | * -EINVAL if there is a bad superblock | |
1980 | * 0 on success | |
1981 | */ | |
1982 | static int ocfs2_verify_volume(struct ocfs2_dinode *di, | |
1983 | struct buffer_head *bh, | |
1984 | u32 blksz) | |
1985 | { | |
1986 | int status = -EAGAIN; | |
1987 | ||
1988 | mlog_entry_void(); | |
1989 | ||
1990 | if (memcmp(di->i_signature, OCFS2_SUPER_BLOCK_SIGNATURE, | |
1991 | strlen(OCFS2_SUPER_BLOCK_SIGNATURE)) == 0) { | |
1992 | status = -EINVAL; | |
1993 | if ((1 << le32_to_cpu(di->id2.i_super.s_blocksize_bits)) != blksz) { | |
1994 | mlog(ML_ERROR, "found superblock with incorrect block " | |
1995 | "size: found %u, should be %u\n", | |
1996 | 1 << le32_to_cpu(di->id2.i_super.s_blocksize_bits), | |
1997 | blksz); | |
1998 | } else if (le16_to_cpu(di->id2.i_super.s_major_rev_level) != | |
1999 | OCFS2_MAJOR_REV_LEVEL || | |
2000 | le16_to_cpu(di->id2.i_super.s_minor_rev_level) != | |
2001 | OCFS2_MINOR_REV_LEVEL) { | |
2002 | mlog(ML_ERROR, "found superblock with bad version: " | |
2003 | "found %u.%u, should be %u.%u\n", | |
2004 | le16_to_cpu(di->id2.i_super.s_major_rev_level), | |
2005 | le16_to_cpu(di->id2.i_super.s_minor_rev_level), | |
2006 | OCFS2_MAJOR_REV_LEVEL, | |
2007 | OCFS2_MINOR_REV_LEVEL); | |
2008 | } else if (bh->b_blocknr != le64_to_cpu(di->i_blkno)) { | |
2009 | mlog(ML_ERROR, "bad block number on superblock: " | |
b0697053 | 2010 | "found %llu, should be %llu\n", |
1ca1a111 | 2011 | (unsigned long long)le64_to_cpu(di->i_blkno), |
b0697053 | 2012 | (unsigned long long)bh->b_blocknr); |
ccd979bd MF |
2013 | } else if (le32_to_cpu(di->id2.i_super.s_clustersize_bits) < 12 || |
2014 | le32_to_cpu(di->id2.i_super.s_clustersize_bits) > 20) { | |
2015 | mlog(ML_ERROR, "bad cluster size found: %u\n", | |
2016 | 1 << le32_to_cpu(di->id2.i_super.s_clustersize_bits)); | |
2017 | } else if (!le64_to_cpu(di->id2.i_super.s_root_blkno)) { | |
2018 | mlog(ML_ERROR, "bad root_blkno: 0\n"); | |
2019 | } else if (!le64_to_cpu(di->id2.i_super.s_system_dir_blkno)) { | |
2020 | mlog(ML_ERROR, "bad system_dir_blkno: 0\n"); | |
2021 | } else if (le16_to_cpu(di->id2.i_super.s_max_slots) > OCFS2_MAX_SLOTS) { | |
2022 | mlog(ML_ERROR, | |
2023 | "Superblock slots found greater than file system " | |
2024 | "maximum: found %u, max %u\n", | |
2025 | le16_to_cpu(di->id2.i_super.s_max_slots), | |
2026 | OCFS2_MAX_SLOTS); | |
2027 | } else { | |
2028 | /* found it! */ | |
2029 | status = 0; | |
2030 | } | |
2031 | } | |
2032 | ||
2033 | mlog_exit(status); | |
2034 | return status; | |
2035 | } | |
2036 | ||
2037 | static int ocfs2_check_volume(struct ocfs2_super *osb) | |
2038 | { | |
bddb8eb3 | 2039 | int status; |
ccd979bd | 2040 | int dirty; |
c271c5c2 | 2041 | int local; |
ccd979bd MF |
2042 | struct ocfs2_dinode *local_alloc = NULL; /* only used if we |
2043 | * recover | |
2044 | * ourselves. */ | |
2045 | ||
2046 | mlog_entry_void(); | |
2047 | ||
2048 | /* Init our journal object. */ | |
2049 | status = ocfs2_journal_init(osb->journal, &dirty); | |
2050 | if (status < 0) { | |
2051 | mlog(ML_ERROR, "Could not initialize journal!\n"); | |
2052 | goto finally; | |
2053 | } | |
2054 | ||
2055 | /* If the journal was unmounted cleanly then we don't want to | |
2056 | * recover anything. Otherwise, journal_load will do that | |
2057 | * dirty work for us :) */ | |
2058 | if (!dirty) { | |
2059 | status = ocfs2_journal_wipe(osb->journal, 0); | |
2060 | if (status < 0) { | |
2061 | mlog_errno(status); | |
2062 | goto finally; | |
2063 | } | |
2064 | } else { | |
2065 | mlog(ML_NOTICE, "File system was not unmounted cleanly, " | |
2066 | "recovering volume.\n"); | |
2067 | } | |
2068 | ||
c271c5c2 SM |
2069 | local = ocfs2_mount_local(osb); |
2070 | ||
ccd979bd | 2071 | /* will play back anything left in the journal. */ |
539d8264 | 2072 | status = ocfs2_journal_load(osb->journal, local, dirty); |
01af4820 WW |
2073 | if (status < 0) { |
2074 | mlog(ML_ERROR, "ocfs2 journal load failed! %d\n", status); | |
2075 | goto finally; | |
2076 | } | |
ccd979bd MF |
2077 | |
2078 | if (dirty) { | |
2079 | /* recover my local alloc if we didn't unmount cleanly. */ | |
2080 | status = ocfs2_begin_local_alloc_recovery(osb, | |
2081 | osb->slot_num, | |
2082 | &local_alloc); | |
2083 | if (status < 0) { | |
2084 | mlog_errno(status); | |
2085 | goto finally; | |
2086 | } | |
2087 | /* we complete the recovery process after we've marked | |
2088 | * ourselves as mounted. */ | |
2089 | } | |
2090 | ||
2091 | mlog(0, "Journal loaded.\n"); | |
2092 | ||
2093 | status = ocfs2_load_local_alloc(osb); | |
2094 | if (status < 0) { | |
2095 | mlog_errno(status); | |
2096 | goto finally; | |
2097 | } | |
2098 | ||
2099 | if (dirty) { | |
2100 | /* Recovery will be completed after we've mounted the | |
2101 | * rest of the volume. */ | |
2102 | osb->dirty = 1; | |
2103 | osb->local_alloc_copy = local_alloc; | |
2104 | local_alloc = NULL; | |
2105 | } | |
2106 | ||
2107 | /* go through each journal, trylock it and if you get the | |
2108 | * lock, and it's marked as dirty, set the bit in the recover | |
2109 | * map and launch a recovery thread for it. */ | |
2110 | status = ocfs2_mark_dead_nodes(osb); | |
2111 | if (status < 0) | |
2112 | mlog_errno(status); | |
2113 | ||
2114 | finally: | |
2115 | if (local_alloc) | |
2116 | kfree(local_alloc); | |
2117 | ||
2118 | mlog_exit(status); | |
2119 | return status; | |
2120 | } | |
2121 | ||
2122 | /* | |
2123 | * The routine gets called from dismount or close whenever a dismount on | |
2124 | * volume is requested and the osb open count becomes 1. | |
2125 | * It will remove the osb from the global list and also free up all the | |
2126 | * initialized resources and fileobject. | |
2127 | */ | |
2128 | static void ocfs2_delete_osb(struct ocfs2_super *osb) | |
2129 | { | |
2130 | mlog_entry_void(); | |
2131 | ||
2132 | /* This function assumes that the caller has the main osb resource */ | |
2133 | ||
8e8a4603 | 2134 | ocfs2_free_slot_info(osb); |
ccd979bd | 2135 | |
b4df6ed8 | 2136 | kfree(osb->osb_orphan_wipes); |
539d8264 | 2137 | kfree(osb->slot_recovery_generations); |
ccd979bd MF |
2138 | /* FIXME |
2139 | * This belongs in journal shutdown, but because we have to | |
2140 | * allocate osb->journal at the start of ocfs2_initalize_osb(), | |
2141 | * we free it here. | |
2142 | */ | |
2143 | kfree(osb->journal); | |
2144 | if (osb->local_alloc_copy) | |
2145 | kfree(osb->local_alloc_copy); | |
2146 | kfree(osb->uuid_str); | |
2147 | ocfs2_put_dlm_debug(osb->osb_dlm_debug); | |
2148 | memset(osb, 0, sizeof(struct ocfs2_super)); | |
2149 | ||
2150 | mlog_exit_void(); | |
2151 | } | |
2152 | ||
2153 | /* Put OCFS2 into a readonly state, or (if the user specifies it), | |
2154 | * panic(). We do not support continue-on-error operation. */ | |
2155 | static void ocfs2_handle_error(struct super_block *sb) | |
2156 | { | |
2157 | struct ocfs2_super *osb = OCFS2_SB(sb); | |
2158 | ||
2159 | if (osb->s_mount_opt & OCFS2_MOUNT_ERRORS_PANIC) | |
2160 | panic("OCFS2: (device %s): panic forced after error\n", | |
2161 | sb->s_id); | |
2162 | ||
2163 | ocfs2_set_osb_flag(osb, OCFS2_OSB_ERROR_FS); | |
2164 | ||
2165 | if (sb->s_flags & MS_RDONLY && | |
2166 | (ocfs2_is_soft_readonly(osb) || | |
2167 | ocfs2_is_hard_readonly(osb))) | |
2168 | return; | |
2169 | ||
2170 | printk(KERN_CRIT "File system is now read-only due to the potential " | |
2171 | "of on-disk corruption. Please run fsck.ocfs2 once the file " | |
2172 | "system is unmounted.\n"); | |
2173 | sb->s_flags |= MS_RDONLY; | |
2174 | ocfs2_set_ro_flag(osb, 0); | |
2175 | } | |
2176 | ||
2177 | static char error_buf[1024]; | |
2178 | ||
2179 | void __ocfs2_error(struct super_block *sb, | |
2180 | const char *function, | |
2181 | const char *fmt, ...) | |
2182 | { | |
2183 | va_list args; | |
2184 | ||
2185 | va_start(args, fmt); | |
4a6e617a | 2186 | vsnprintf(error_buf, sizeof(error_buf), fmt, args); |
ccd979bd MF |
2187 | va_end(args); |
2188 | ||
2189 | /* Not using mlog here because we want to show the actual | |
2190 | * function the error came from. */ | |
2191 | printk(KERN_CRIT "OCFS2: ERROR (device %s): %s: %s\n", | |
2192 | sb->s_id, function, error_buf); | |
2193 | ||
2194 | ocfs2_handle_error(sb); | |
2195 | } | |
2196 | ||
2197 | /* Handle critical errors. This is intentionally more drastic than | |
2198 | * ocfs2_handle_error, so we only use for things like journal errors, | |
2199 | * etc. */ | |
2200 | void __ocfs2_abort(struct super_block* sb, | |
2201 | const char *function, | |
2202 | const char *fmt, ...) | |
2203 | { | |
2204 | va_list args; | |
2205 | ||
2206 | va_start(args, fmt); | |
4a6e617a | 2207 | vsnprintf(error_buf, sizeof(error_buf), fmt, args); |
ccd979bd MF |
2208 | va_end(args); |
2209 | ||
2210 | printk(KERN_CRIT "OCFS2: abort (device %s): %s: %s\n", | |
2211 | sb->s_id, function, error_buf); | |
2212 | ||
2213 | /* We don't have the cluster support yet to go straight to | |
2214 | * hard readonly in here. Until then, we want to keep | |
2215 | * ocfs2_abort() so that we can at least mark critical | |
2216 | * errors. | |
2217 | * | |
2218 | * TODO: This should abort the journal and alert other nodes | |
2219 | * that our slot needs recovery. */ | |
2220 | ||
2221 | /* Force a panic(). This stinks, but it's better than letting | |
2222 | * things continue without having a proper hard readonly | |
2223 | * here. */ | |
2224 | OCFS2_SB(sb)->s_mount_opt |= OCFS2_MOUNT_ERRORS_PANIC; | |
2225 | ocfs2_handle_error(sb); | |
2226 | } | |
2227 | ||
2228 | module_init(ocfs2_init); | |
2229 | module_exit(ocfs2_exit); |