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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> | |
42 | #include <linux/mount.h> | |
43 | #include <linux/seq_file.h> | |
44 | #include <linux/quotaops.h> | |
45 | #include <linux/smp_lock.h> | |
46 | ||
47 | #define MLOG_MASK_PREFIX ML_SUPER | |
48 | #include <cluster/masklog.h> | |
49 | ||
50 | #include "ocfs2.h" | |
51 | ||
52 | /* this should be the only file to include a version 1 header */ | |
53 | #include "ocfs1_fs_compat.h" | |
54 | ||
55 | #include "alloc.h" | |
56 | #include "blockcheck.h" | |
57 | #include "dlmglue.h" | |
58 | #include "export.h" | |
59 | #include "extent_map.h" | |
60 | #include "heartbeat.h" | |
61 | #include "inode.h" | |
62 | #include "journal.h" | |
63 | #include "localalloc.h" | |
64 | #include "namei.h" | |
65 | #include "slot_map.h" | |
66 | #include "super.h" | |
67 | #include "sysfile.h" | |
68 | #include "uptodate.h" | |
69 | #include "ver.h" | |
70 | #include "xattr.h" | |
71 | #include "quota.h" | |
72 | ||
73 | #include "buffer_head_io.h" | |
74 | ||
75 | static struct kmem_cache *ocfs2_inode_cachep = NULL; | |
76 | struct kmem_cache *ocfs2_dquot_cachep; | |
77 | struct kmem_cache *ocfs2_qf_chunk_cachep; | |
78 | ||
79 | /* OCFS2 needs to schedule several differnt types of work which | |
80 | * require cluster locking, disk I/O, recovery waits, etc. Since these | |
81 | * types of work tend to be heavy we avoid using the kernel events | |
82 | * workqueue and schedule on our own. */ | |
83 | struct workqueue_struct *ocfs2_wq = NULL; | |
84 | ||
85 | static struct dentry *ocfs2_debugfs_root = NULL; | |
86 | ||
87 | MODULE_AUTHOR("Oracle"); | |
88 | MODULE_LICENSE("GPL"); | |
89 | ||
90 | struct mount_options | |
91 | { | |
92 | unsigned long commit_interval; | |
93 | unsigned long mount_opt; | |
94 | unsigned int atime_quantum; | |
95 | signed short slot; | |
96 | unsigned int localalloc_opt; | |
97 | char cluster_stack[OCFS2_STACK_LABEL_LEN + 1]; | |
98 | }; | |
99 | ||
100 | static int ocfs2_parse_options(struct super_block *sb, char *options, | |
101 | struct mount_options *mopt, | |
102 | int is_remount); | |
103 | static int ocfs2_show_options(struct seq_file *s, struct vfsmount *mnt); | |
104 | static void ocfs2_put_super(struct super_block *sb); | |
105 | static int ocfs2_mount_volume(struct super_block *sb); | |
106 | static int ocfs2_remount(struct super_block *sb, int *flags, char *data); | |
107 | static void ocfs2_dismount_volume(struct super_block *sb, int mnt_err); | |
108 | static int ocfs2_initialize_mem_caches(void); | |
109 | static void ocfs2_free_mem_caches(void); | |
110 | static void ocfs2_delete_osb(struct ocfs2_super *osb); | |
111 | ||
112 | static int ocfs2_statfs(struct dentry *dentry, struct kstatfs *buf); | |
113 | ||
114 | static int ocfs2_sync_fs(struct super_block *sb, int wait); | |
115 | ||
116 | static int ocfs2_init_global_system_inodes(struct ocfs2_super *osb); | |
117 | static int ocfs2_init_local_system_inodes(struct ocfs2_super *osb); | |
118 | static void ocfs2_release_system_inodes(struct ocfs2_super *osb); | |
119 | static int ocfs2_check_volume(struct ocfs2_super *osb); | |
120 | static int ocfs2_verify_volume(struct ocfs2_dinode *di, | |
121 | struct buffer_head *bh, | |
122 | u32 sectsize, | |
123 | struct ocfs2_blockcheck_stats *stats); | |
124 | static int ocfs2_initialize_super(struct super_block *sb, | |
125 | struct buffer_head *bh, | |
126 | int sector_size, | |
127 | struct ocfs2_blockcheck_stats *stats); | |
128 | static int ocfs2_get_sector(struct super_block *sb, | |
129 | struct buffer_head **bh, | |
130 | int block, | |
131 | int sect_size); | |
132 | static struct inode *ocfs2_alloc_inode(struct super_block *sb); | |
133 | static void ocfs2_destroy_inode(struct inode *inode); | |
134 | static int ocfs2_susp_quotas(struct ocfs2_super *osb, int unsuspend); | |
135 | static int ocfs2_enable_quotas(struct ocfs2_super *osb); | |
136 | static void ocfs2_disable_quotas(struct ocfs2_super *osb); | |
137 | ||
138 | static const struct super_operations ocfs2_sops = { | |
139 | .statfs = ocfs2_statfs, | |
140 | .alloc_inode = ocfs2_alloc_inode, | |
141 | .destroy_inode = ocfs2_destroy_inode, | |
142 | .drop_inode = ocfs2_drop_inode, | |
143 | .clear_inode = ocfs2_clear_inode, | |
144 | .delete_inode = ocfs2_delete_inode, | |
145 | .sync_fs = ocfs2_sync_fs, | |
146 | .put_super = ocfs2_put_super, | |
147 | .remount_fs = ocfs2_remount, | |
148 | .show_options = ocfs2_show_options, | |
149 | .quota_read = ocfs2_quota_read, | |
150 | .quota_write = ocfs2_quota_write, | |
151 | }; | |
152 | ||
153 | enum { | |
154 | Opt_barrier, | |
155 | Opt_err_panic, | |
156 | Opt_err_ro, | |
157 | Opt_intr, | |
158 | Opt_nointr, | |
159 | Opt_hb_none, | |
160 | Opt_hb_local, | |
161 | Opt_data_ordered, | |
162 | Opt_data_writeback, | |
163 | Opt_atime_quantum, | |
164 | Opt_slot, | |
165 | Opt_commit, | |
166 | Opt_localalloc, | |
167 | Opt_localflocks, | |
168 | Opt_stack, | |
169 | Opt_user_xattr, | |
170 | Opt_nouser_xattr, | |
171 | Opt_inode64, | |
172 | Opt_acl, | |
173 | Opt_noacl, | |
174 | Opt_usrquota, | |
175 | Opt_grpquota, | |
176 | Opt_err, | |
177 | }; | |
178 | ||
179 | static const match_table_t tokens = { | |
180 | {Opt_barrier, "barrier=%u"}, | |
181 | {Opt_err_panic, "errors=panic"}, | |
182 | {Opt_err_ro, "errors=remount-ro"}, | |
183 | {Opt_intr, "intr"}, | |
184 | {Opt_nointr, "nointr"}, | |
185 | {Opt_hb_none, OCFS2_HB_NONE}, | |
186 | {Opt_hb_local, OCFS2_HB_LOCAL}, | |
187 | {Opt_data_ordered, "data=ordered"}, | |
188 | {Opt_data_writeback, "data=writeback"}, | |
189 | {Opt_atime_quantum, "atime_quantum=%u"}, | |
190 | {Opt_slot, "preferred_slot=%u"}, | |
191 | {Opt_commit, "commit=%u"}, | |
192 | {Opt_localalloc, "localalloc=%d"}, | |
193 | {Opt_localflocks, "localflocks"}, | |
194 | {Opt_stack, "cluster_stack=%s"}, | |
195 | {Opt_user_xattr, "user_xattr"}, | |
196 | {Opt_nouser_xattr, "nouser_xattr"}, | |
197 | {Opt_inode64, "inode64"}, | |
198 | {Opt_acl, "acl"}, | |
199 | {Opt_noacl, "noacl"}, | |
200 | {Opt_usrquota, "usrquota"}, | |
201 | {Opt_grpquota, "grpquota"}, | |
202 | {Opt_err, NULL} | |
203 | }; | |
204 | ||
205 | #ifdef CONFIG_DEBUG_FS | |
206 | static int ocfs2_osb_dump(struct ocfs2_super *osb, char *buf, int len) | |
207 | { | |
208 | struct ocfs2_cluster_connection *cconn = osb->cconn; | |
209 | struct ocfs2_recovery_map *rm = osb->recovery_map; | |
210 | struct ocfs2_orphan_scan *os = &osb->osb_orphan_scan; | |
211 | int i, out = 0; | |
212 | ||
213 | out += snprintf(buf + out, len - out, | |
214 | "%10s => Id: %-s Uuid: %-s Gen: 0x%X Label: %-s\n", | |
215 | "Device", osb->dev_str, osb->uuid_str, | |
216 | osb->fs_generation, osb->vol_label); | |
217 | ||
218 | out += snprintf(buf + out, len - out, | |
219 | "%10s => State: %d Flags: 0x%lX\n", "Volume", | |
220 | atomic_read(&osb->vol_state), osb->osb_flags); | |
221 | ||
222 | out += snprintf(buf + out, len - out, | |
223 | "%10s => Block: %lu Cluster: %d\n", "Sizes", | |
224 | osb->sb->s_blocksize, osb->s_clustersize); | |
225 | ||
226 | out += snprintf(buf + out, len - out, | |
227 | "%10s => Compat: 0x%X Incompat: 0x%X " | |
228 | "ROcompat: 0x%X\n", | |
229 | "Features", osb->s_feature_compat, | |
230 | osb->s_feature_incompat, osb->s_feature_ro_compat); | |
231 | ||
232 | out += snprintf(buf + out, len - out, | |
233 | "%10s => Opts: 0x%lX AtimeQuanta: %u\n", "Mount", | |
234 | osb->s_mount_opt, osb->s_atime_quantum); | |
235 | ||
236 | if (cconn) { | |
237 | out += snprintf(buf + out, len - out, | |
238 | "%10s => Stack: %s Name: %*s " | |
239 | "Version: %d.%d\n", "Cluster", | |
240 | (*osb->osb_cluster_stack == '\0' ? | |
241 | "o2cb" : osb->osb_cluster_stack), | |
242 | cconn->cc_namelen, cconn->cc_name, | |
243 | cconn->cc_version.pv_major, | |
244 | cconn->cc_version.pv_minor); | |
245 | } | |
246 | ||
247 | spin_lock(&osb->dc_task_lock); | |
248 | out += snprintf(buf + out, len - out, | |
249 | "%10s => Pid: %d Count: %lu WakeSeq: %lu " | |
250 | "WorkSeq: %lu\n", "DownCnvt", | |
251 | (osb->dc_task ? task_pid_nr(osb->dc_task) : -1), | |
252 | osb->blocked_lock_count, osb->dc_wake_sequence, | |
253 | osb->dc_work_sequence); | |
254 | spin_unlock(&osb->dc_task_lock); | |
255 | ||
256 | spin_lock(&osb->osb_lock); | |
257 | out += snprintf(buf + out, len - out, "%10s => Pid: %d Nodes:", | |
258 | "Recovery", | |
259 | (osb->recovery_thread_task ? | |
260 | task_pid_nr(osb->recovery_thread_task) : -1)); | |
261 | if (rm->rm_used == 0) | |
262 | out += snprintf(buf + out, len - out, " None\n"); | |
263 | else { | |
264 | for (i = 0; i < rm->rm_used; i++) | |
265 | out += snprintf(buf + out, len - out, " %d", | |
266 | rm->rm_entries[i]); | |
267 | out += snprintf(buf + out, len - out, "\n"); | |
268 | } | |
269 | spin_unlock(&osb->osb_lock); | |
270 | ||
271 | out += snprintf(buf + out, len - out, | |
272 | "%10s => Pid: %d Interval: %lu Needs: %d\n", "Commit", | |
273 | (osb->commit_task ? task_pid_nr(osb->commit_task) : -1), | |
274 | osb->osb_commit_interval, | |
275 | atomic_read(&osb->needs_checkpoint)); | |
276 | ||
277 | out += snprintf(buf + out, len - out, | |
278 | "%10s => State: %d TxnId: %lu NumTxns: %d\n", | |
279 | "Journal", osb->journal->j_state, | |
280 | osb->journal->j_trans_id, | |
281 | atomic_read(&osb->journal->j_num_trans)); | |
282 | ||
283 | out += snprintf(buf + out, len - out, | |
284 | "%10s => GlobalAllocs: %d LocalAllocs: %d " | |
285 | "SubAllocs: %d LAWinMoves: %d SAExtends: %d\n", | |
286 | "Stats", | |
287 | atomic_read(&osb->alloc_stats.bitmap_data), | |
288 | atomic_read(&osb->alloc_stats.local_data), | |
289 | atomic_read(&osb->alloc_stats.bg_allocs), | |
290 | atomic_read(&osb->alloc_stats.moves), | |
291 | atomic_read(&osb->alloc_stats.bg_extends)); | |
292 | ||
293 | out += snprintf(buf + out, len - out, | |
294 | "%10s => State: %u Descriptor: %llu Size: %u bits " | |
295 | "Default: %u bits\n", | |
296 | "LocalAlloc", osb->local_alloc_state, | |
297 | (unsigned long long)osb->la_last_gd, | |
298 | osb->local_alloc_bits, osb->local_alloc_default_bits); | |
299 | ||
300 | spin_lock(&osb->osb_lock); | |
301 | out += snprintf(buf + out, len - out, | |
302 | "%10s => Slot: %d NumStolen: %d\n", "Steal", | |
303 | osb->s_inode_steal_slot, | |
304 | atomic_read(&osb->s_num_inodes_stolen)); | |
305 | spin_unlock(&osb->osb_lock); | |
306 | ||
307 | out += snprintf(buf + out, len - out, "OrphanScan => "); | |
308 | out += snprintf(buf + out, len - out, "Local: %u Global: %u ", | |
309 | os->os_count, os->os_seqno); | |
310 | out += snprintf(buf + out, len - out, " Last Scan: "); | |
311 | if (atomic_read(&os->os_state) == ORPHAN_SCAN_INACTIVE) | |
312 | out += snprintf(buf + out, len - out, "Disabled\n"); | |
313 | else | |
314 | out += snprintf(buf + out, len - out, "%lu seconds ago\n", | |
315 | (get_seconds() - os->os_scantime.tv_sec)); | |
316 | ||
317 | out += snprintf(buf + out, len - out, "%10s => %3s %10s\n", | |
318 | "Slots", "Num", "RecoGen"); | |
319 | for (i = 0; i < osb->max_slots; ++i) { | |
320 | out += snprintf(buf + out, len - out, | |
321 | "%10s %c %3d %10d\n", | |
322 | " ", | |
323 | (i == osb->slot_num ? '*' : ' '), | |
324 | i, osb->slot_recovery_generations[i]); | |
325 | } | |
326 | ||
327 | return out; | |
328 | } | |
329 | ||
330 | static int ocfs2_osb_debug_open(struct inode *inode, struct file *file) | |
331 | { | |
332 | struct ocfs2_super *osb = inode->i_private; | |
333 | char *buf = NULL; | |
334 | ||
335 | buf = kmalloc(PAGE_SIZE, GFP_KERNEL); | |
336 | if (!buf) | |
337 | goto bail; | |
338 | ||
339 | i_size_write(inode, ocfs2_osb_dump(osb, buf, PAGE_SIZE)); | |
340 | ||
341 | file->private_data = buf; | |
342 | ||
343 | return 0; | |
344 | bail: | |
345 | return -ENOMEM; | |
346 | } | |
347 | ||
348 | static int ocfs2_debug_release(struct inode *inode, struct file *file) | |
349 | { | |
350 | kfree(file->private_data); | |
351 | return 0; | |
352 | } | |
353 | ||
354 | static ssize_t ocfs2_debug_read(struct file *file, char __user *buf, | |
355 | size_t nbytes, loff_t *ppos) | |
356 | { | |
357 | return simple_read_from_buffer(buf, nbytes, ppos, file->private_data, | |
358 | i_size_read(file->f_mapping->host)); | |
359 | } | |
360 | #else | |
361 | static int ocfs2_osb_debug_open(struct inode *inode, struct file *file) | |
362 | { | |
363 | return 0; | |
364 | } | |
365 | static int ocfs2_debug_release(struct inode *inode, struct file *file) | |
366 | { | |
367 | return 0; | |
368 | } | |
369 | static ssize_t ocfs2_debug_read(struct file *file, char __user *buf, | |
370 | size_t nbytes, loff_t *ppos) | |
371 | { | |
372 | return 0; | |
373 | } | |
374 | #endif /* CONFIG_DEBUG_FS */ | |
375 | ||
376 | static struct file_operations ocfs2_osb_debug_fops = { | |
377 | .open = ocfs2_osb_debug_open, | |
378 | .release = ocfs2_debug_release, | |
379 | .read = ocfs2_debug_read, | |
380 | .llseek = generic_file_llseek, | |
381 | }; | |
382 | ||
383 | static int ocfs2_sync_fs(struct super_block *sb, int wait) | |
384 | { | |
385 | int status; | |
386 | tid_t target; | |
387 | struct ocfs2_super *osb = OCFS2_SB(sb); | |
388 | ||
389 | if (ocfs2_is_hard_readonly(osb)) | |
390 | return -EROFS; | |
391 | ||
392 | if (wait) { | |
393 | status = ocfs2_flush_truncate_log(osb); | |
394 | if (status < 0) | |
395 | mlog_errno(status); | |
396 | } else { | |
397 | ocfs2_schedule_truncate_log_flush(osb, 0); | |
398 | } | |
399 | ||
400 | if (jbd2_journal_start_commit(OCFS2_SB(sb)->journal->j_journal, | |
401 | &target)) { | |
402 | if (wait) | |
403 | jbd2_log_wait_commit(OCFS2_SB(sb)->journal->j_journal, | |
404 | target); | |
405 | } | |
406 | return 0; | |
407 | } | |
408 | ||
409 | static int ocfs2_need_system_inode(struct ocfs2_super *osb, int ino) | |
410 | { | |
411 | if (!OCFS2_HAS_RO_COMPAT_FEATURE(osb->sb, OCFS2_FEATURE_RO_COMPAT_USRQUOTA) | |
412 | && (ino == USER_QUOTA_SYSTEM_INODE | |
413 | || ino == LOCAL_USER_QUOTA_SYSTEM_INODE)) | |
414 | return 0; | |
415 | if (!OCFS2_HAS_RO_COMPAT_FEATURE(osb->sb, OCFS2_FEATURE_RO_COMPAT_GRPQUOTA) | |
416 | && (ino == GROUP_QUOTA_SYSTEM_INODE | |
417 | || ino == LOCAL_GROUP_QUOTA_SYSTEM_INODE)) | |
418 | return 0; | |
419 | return 1; | |
420 | } | |
421 | ||
422 | static int ocfs2_init_global_system_inodes(struct ocfs2_super *osb) | |
423 | { | |
424 | struct inode *new = NULL; | |
425 | int status = 0; | |
426 | int i; | |
427 | ||
428 | mlog_entry_void(); | |
429 | ||
430 | new = ocfs2_iget(osb, osb->root_blkno, OCFS2_FI_FLAG_SYSFILE, 0); | |
431 | if (IS_ERR(new)) { | |
432 | status = PTR_ERR(new); | |
433 | mlog_errno(status); | |
434 | goto bail; | |
435 | } | |
436 | osb->root_inode = new; | |
437 | ||
438 | new = ocfs2_iget(osb, osb->system_dir_blkno, OCFS2_FI_FLAG_SYSFILE, 0); | |
439 | if (IS_ERR(new)) { | |
440 | status = PTR_ERR(new); | |
441 | mlog_errno(status); | |
442 | goto bail; | |
443 | } | |
444 | osb->sys_root_inode = new; | |
445 | ||
446 | for (i = OCFS2_FIRST_ONLINE_SYSTEM_INODE; | |
447 | i <= OCFS2_LAST_GLOBAL_SYSTEM_INODE; i++) { | |
448 | if (!ocfs2_need_system_inode(osb, i)) | |
449 | continue; | |
450 | new = ocfs2_get_system_file_inode(osb, i, osb->slot_num); | |
451 | if (!new) { | |
452 | ocfs2_release_system_inodes(osb); | |
453 | status = -EINVAL; | |
454 | mlog_errno(status); | |
455 | /* FIXME: Should ERROR_RO_FS */ | |
456 | mlog(ML_ERROR, "Unable to load system inode %d, " | |
457 | "possibly corrupt fs?", i); | |
458 | goto bail; | |
459 | } | |
460 | // the array now has one ref, so drop this one | |
461 | iput(new); | |
462 | } | |
463 | ||
464 | bail: | |
465 | mlog_exit(status); | |
466 | return status; | |
467 | } | |
468 | ||
469 | static int ocfs2_init_local_system_inodes(struct ocfs2_super *osb) | |
470 | { | |
471 | struct inode *new = NULL; | |
472 | int status = 0; | |
473 | int i; | |
474 | ||
475 | mlog_entry_void(); | |
476 | ||
477 | for (i = OCFS2_LAST_GLOBAL_SYSTEM_INODE + 1; | |
478 | i < NUM_SYSTEM_INODES; | |
479 | i++) { | |
480 | if (!ocfs2_need_system_inode(osb, i)) | |
481 | continue; | |
482 | new = ocfs2_get_system_file_inode(osb, i, osb->slot_num); | |
483 | if (!new) { | |
484 | ocfs2_release_system_inodes(osb); | |
485 | status = -EINVAL; | |
486 | mlog(ML_ERROR, "status=%d, sysfile=%d, slot=%d\n", | |
487 | status, i, osb->slot_num); | |
488 | goto bail; | |
489 | } | |
490 | /* the array now has one ref, so drop this one */ | |
491 | iput(new); | |
492 | } | |
493 | ||
494 | bail: | |
495 | mlog_exit(status); | |
496 | return status; | |
497 | } | |
498 | ||
499 | static void ocfs2_release_system_inodes(struct ocfs2_super *osb) | |
500 | { | |
501 | int i; | |
502 | struct inode *inode; | |
503 | ||
504 | mlog_entry_void(); | |
505 | ||
506 | for (i = 0; i < NUM_SYSTEM_INODES; i++) { | |
507 | inode = osb->system_inodes[i]; | |
508 | if (inode) { | |
509 | iput(inode); | |
510 | osb->system_inodes[i] = NULL; | |
511 | } | |
512 | } | |
513 | ||
514 | inode = osb->sys_root_inode; | |
515 | if (inode) { | |
516 | iput(inode); | |
517 | osb->sys_root_inode = NULL; | |
518 | } | |
519 | ||
520 | inode = osb->root_inode; | |
521 | if (inode) { | |
522 | iput(inode); | |
523 | osb->root_inode = NULL; | |
524 | } | |
525 | ||
526 | mlog_exit(0); | |
527 | } | |
528 | ||
529 | /* We're allocating fs objects, use GFP_NOFS */ | |
530 | static struct inode *ocfs2_alloc_inode(struct super_block *sb) | |
531 | { | |
532 | struct ocfs2_inode_info *oi; | |
533 | ||
534 | oi = kmem_cache_alloc(ocfs2_inode_cachep, GFP_NOFS); | |
535 | if (!oi) | |
536 | return NULL; | |
537 | ||
538 | jbd2_journal_init_jbd_inode(&oi->ip_jinode, &oi->vfs_inode); | |
539 | return &oi->vfs_inode; | |
540 | } | |
541 | ||
542 | static void ocfs2_destroy_inode(struct inode *inode) | |
543 | { | |
544 | kmem_cache_free(ocfs2_inode_cachep, OCFS2_I(inode)); | |
545 | } | |
546 | ||
547 | static unsigned long long ocfs2_max_file_offset(unsigned int bbits, | |
548 | unsigned int cbits) | |
549 | { | |
550 | unsigned int bytes = 1 << cbits; | |
551 | unsigned int trim = bytes; | |
552 | unsigned int bitshift = 32; | |
553 | ||
554 | /* | |
555 | * i_size and all block offsets in ocfs2 are always 64 bits | |
556 | * wide. i_clusters is 32 bits, in cluster-sized units. So on | |
557 | * 64 bit platforms, cluster size will be the limiting factor. | |
558 | */ | |
559 | ||
560 | #if BITS_PER_LONG == 32 | |
561 | # if defined(CONFIG_LBDAF) | |
562 | BUILD_BUG_ON(sizeof(sector_t) != 8); | |
563 | /* | |
564 | * We might be limited by page cache size. | |
565 | */ | |
566 | if (bytes > PAGE_CACHE_SIZE) { | |
567 | bytes = PAGE_CACHE_SIZE; | |
568 | trim = 1; | |
569 | /* | |
570 | * Shift by 31 here so that we don't get larger than | |
571 | * MAX_LFS_FILESIZE | |
572 | */ | |
573 | bitshift = 31; | |
574 | } | |
575 | # else | |
576 | /* | |
577 | * We are limited by the size of sector_t. Use block size, as | |
578 | * that's what we expose to the VFS. | |
579 | */ | |
580 | bytes = 1 << bbits; | |
581 | trim = 1; | |
582 | bitshift = 31; | |
583 | # endif | |
584 | #endif | |
585 | ||
586 | /* | |
587 | * Trim by a whole cluster when we can actually approach the | |
588 | * on-disk limits. Otherwise we can overflow i_clusters when | |
589 | * an extent start is at the max offset. | |
590 | */ | |
591 | return (((unsigned long long)bytes) << bitshift) - trim; | |
592 | } | |
593 | ||
594 | static int ocfs2_remount(struct super_block *sb, int *flags, char *data) | |
595 | { | |
596 | int incompat_features; | |
597 | int ret = 0; | |
598 | struct mount_options parsed_options; | |
599 | struct ocfs2_super *osb = OCFS2_SB(sb); | |
600 | ||
601 | lock_kernel(); | |
602 | ||
603 | if (!ocfs2_parse_options(sb, data, &parsed_options, 1)) { | |
604 | ret = -EINVAL; | |
605 | goto out; | |
606 | } | |
607 | ||
608 | if ((osb->s_mount_opt & OCFS2_MOUNT_HB_LOCAL) != | |
609 | (parsed_options.mount_opt & OCFS2_MOUNT_HB_LOCAL)) { | |
610 | ret = -EINVAL; | |
611 | mlog(ML_ERROR, "Cannot change heartbeat mode on remount\n"); | |
612 | goto out; | |
613 | } | |
614 | ||
615 | if ((osb->s_mount_opt & OCFS2_MOUNT_DATA_WRITEBACK) != | |
616 | (parsed_options.mount_opt & OCFS2_MOUNT_DATA_WRITEBACK)) { | |
617 | ret = -EINVAL; | |
618 | mlog(ML_ERROR, "Cannot change data mode on remount\n"); | |
619 | goto out; | |
620 | } | |
621 | ||
622 | /* Probably don't want this on remount; it might | |
623 | * mess with other nodes */ | |
624 | if (!(osb->s_mount_opt & OCFS2_MOUNT_INODE64) && | |
625 | (parsed_options.mount_opt & OCFS2_MOUNT_INODE64)) { | |
626 | ret = -EINVAL; | |
627 | mlog(ML_ERROR, "Cannot enable inode64 on remount\n"); | |
628 | goto out; | |
629 | } | |
630 | ||
631 | /* We're going to/from readonly mode. */ | |
632 | if ((*flags & MS_RDONLY) != (sb->s_flags & MS_RDONLY)) { | |
633 | /* Disable quota accounting before remounting RO */ | |
634 | if (*flags & MS_RDONLY) { | |
635 | ret = ocfs2_susp_quotas(osb, 0); | |
636 | if (ret < 0) | |
637 | goto out; | |
638 | } | |
639 | /* Lock here so the check of HARD_RO and the potential | |
640 | * setting of SOFT_RO is atomic. */ | |
641 | spin_lock(&osb->osb_lock); | |
642 | if (osb->osb_flags & OCFS2_OSB_HARD_RO) { | |
643 | mlog(ML_ERROR, "Remount on readonly device is forbidden.\n"); | |
644 | ret = -EROFS; | |
645 | goto unlock_osb; | |
646 | } | |
647 | ||
648 | if (*flags & MS_RDONLY) { | |
649 | mlog(0, "Going to ro mode.\n"); | |
650 | sb->s_flags |= MS_RDONLY; | |
651 | osb->osb_flags |= OCFS2_OSB_SOFT_RO; | |
652 | } else { | |
653 | mlog(0, "Making ro filesystem writeable.\n"); | |
654 | ||
655 | if (osb->osb_flags & OCFS2_OSB_ERROR_FS) { | |
656 | mlog(ML_ERROR, "Cannot remount RDWR " | |
657 | "filesystem due to previous errors.\n"); | |
658 | ret = -EROFS; | |
659 | goto unlock_osb; | |
660 | } | |
661 | incompat_features = OCFS2_HAS_RO_COMPAT_FEATURE(sb, ~OCFS2_FEATURE_RO_COMPAT_SUPP); | |
662 | if (incompat_features) { | |
663 | mlog(ML_ERROR, "Cannot remount RDWR because " | |
664 | "of unsupported optional features " | |
665 | "(%x).\n", incompat_features); | |
666 | ret = -EINVAL; | |
667 | goto unlock_osb; | |
668 | } | |
669 | sb->s_flags &= ~MS_RDONLY; | |
670 | osb->osb_flags &= ~OCFS2_OSB_SOFT_RO; | |
671 | } | |
672 | unlock_osb: | |
673 | spin_unlock(&osb->osb_lock); | |
674 | /* Enable quota accounting after remounting RW */ | |
675 | if (!ret && !(*flags & MS_RDONLY)) { | |
676 | if (sb_any_quota_suspended(sb)) | |
677 | ret = ocfs2_susp_quotas(osb, 1); | |
678 | else | |
679 | ret = ocfs2_enable_quotas(osb); | |
680 | if (ret < 0) { | |
681 | /* Return back changes... */ | |
682 | spin_lock(&osb->osb_lock); | |
683 | sb->s_flags |= MS_RDONLY; | |
684 | osb->osb_flags |= OCFS2_OSB_SOFT_RO; | |
685 | spin_unlock(&osb->osb_lock); | |
686 | goto out; | |
687 | } | |
688 | } | |
689 | } | |
690 | ||
691 | if (!ret) { | |
692 | /* Only save off the new mount options in case of a successful | |
693 | * remount. */ | |
694 | if (!(osb->s_feature_incompat & OCFS2_FEATURE_INCOMPAT_XATTR)) | |
695 | parsed_options.mount_opt &= ~OCFS2_MOUNT_POSIX_ACL; | |
696 | osb->s_mount_opt = parsed_options.mount_opt; | |
697 | osb->s_atime_quantum = parsed_options.atime_quantum; | |
698 | osb->preferred_slot = parsed_options.slot; | |
699 | if (parsed_options.commit_interval) | |
700 | osb->osb_commit_interval = parsed_options.commit_interval; | |
701 | ||
702 | if (!ocfs2_is_hard_readonly(osb)) | |
703 | ocfs2_set_journal_params(osb); | |
704 | } | |
705 | out: | |
706 | unlock_kernel(); | |
707 | return ret; | |
708 | } | |
709 | ||
710 | static int ocfs2_sb_probe(struct super_block *sb, | |
711 | struct buffer_head **bh, | |
712 | int *sector_size, | |
713 | struct ocfs2_blockcheck_stats *stats) | |
714 | { | |
715 | int status, tmpstat; | |
716 | struct ocfs1_vol_disk_hdr *hdr; | |
717 | struct ocfs2_dinode *di; | |
718 | int blksize; | |
719 | ||
720 | *bh = NULL; | |
721 | ||
722 | /* may be > 512 */ | |
723 | *sector_size = bdev_logical_block_size(sb->s_bdev); | |
724 | if (*sector_size > OCFS2_MAX_BLOCKSIZE) { | |
725 | mlog(ML_ERROR, "Hardware sector size too large: %d (max=%d)\n", | |
726 | *sector_size, OCFS2_MAX_BLOCKSIZE); | |
727 | status = -EINVAL; | |
728 | goto bail; | |
729 | } | |
730 | ||
731 | /* Can this really happen? */ | |
732 | if (*sector_size < OCFS2_MIN_BLOCKSIZE) | |
733 | *sector_size = OCFS2_MIN_BLOCKSIZE; | |
734 | ||
735 | /* check block zero for old format */ | |
736 | status = ocfs2_get_sector(sb, bh, 0, *sector_size); | |
737 | if (status < 0) { | |
738 | mlog_errno(status); | |
739 | goto bail; | |
740 | } | |
741 | hdr = (struct ocfs1_vol_disk_hdr *) (*bh)->b_data; | |
742 | if (hdr->major_version == OCFS1_MAJOR_VERSION) { | |
743 | mlog(ML_ERROR, "incompatible version: %u.%u\n", | |
744 | hdr->major_version, hdr->minor_version); | |
745 | status = -EINVAL; | |
746 | } | |
747 | if (memcmp(hdr->signature, OCFS1_VOLUME_SIGNATURE, | |
748 | strlen(OCFS1_VOLUME_SIGNATURE)) == 0) { | |
749 | mlog(ML_ERROR, "incompatible volume signature: %8s\n", | |
750 | hdr->signature); | |
751 | status = -EINVAL; | |
752 | } | |
753 | brelse(*bh); | |
754 | *bh = NULL; | |
755 | if (status < 0) { | |
756 | mlog(ML_ERROR, "This is an ocfs v1 filesystem which must be " | |
757 | "upgraded before mounting with ocfs v2\n"); | |
758 | goto bail; | |
759 | } | |
760 | ||
761 | /* | |
762 | * Now check at magic offset for 512, 1024, 2048, 4096 | |
763 | * blocksizes. 4096 is the maximum blocksize because it is | |
764 | * the minimum clustersize. | |
765 | */ | |
766 | status = -EINVAL; | |
767 | for (blksize = *sector_size; | |
768 | blksize <= OCFS2_MAX_BLOCKSIZE; | |
769 | blksize <<= 1) { | |
770 | tmpstat = ocfs2_get_sector(sb, bh, | |
771 | OCFS2_SUPER_BLOCK_BLKNO, | |
772 | blksize); | |
773 | if (tmpstat < 0) { | |
774 | status = tmpstat; | |
775 | mlog_errno(status); | |
776 | goto bail; | |
777 | } | |
778 | di = (struct ocfs2_dinode *) (*bh)->b_data; | |
779 | memset(stats, 0, sizeof(struct ocfs2_blockcheck_stats)); | |
780 | spin_lock_init(&stats->b_lock); | |
781 | status = ocfs2_verify_volume(di, *bh, blksize, stats); | |
782 | if (status >= 0) | |
783 | goto bail; | |
784 | brelse(*bh); | |
785 | *bh = NULL; | |
786 | if (status != -EAGAIN) | |
787 | break; | |
788 | } | |
789 | ||
790 | bail: | |
791 | return status; | |
792 | } | |
793 | ||
794 | static int ocfs2_verify_heartbeat(struct ocfs2_super *osb) | |
795 | { | |
796 | if (ocfs2_mount_local(osb)) { | |
797 | if (osb->s_mount_opt & OCFS2_MOUNT_HB_LOCAL) { | |
798 | mlog(ML_ERROR, "Cannot heartbeat on a locally " | |
799 | "mounted device.\n"); | |
800 | return -EINVAL; | |
801 | } | |
802 | } | |
803 | ||
804 | if (ocfs2_userspace_stack(osb)) { | |
805 | if (osb->s_mount_opt & OCFS2_MOUNT_HB_LOCAL) { | |
806 | mlog(ML_ERROR, "Userspace stack expected, but " | |
807 | "o2cb heartbeat arguments passed to mount\n"); | |
808 | return -EINVAL; | |
809 | } | |
810 | } | |
811 | ||
812 | if (!(osb->s_mount_opt & OCFS2_MOUNT_HB_LOCAL)) { | |
813 | if (!ocfs2_mount_local(osb) && !ocfs2_is_hard_readonly(osb) && | |
814 | !ocfs2_userspace_stack(osb)) { | |
815 | mlog(ML_ERROR, "Heartbeat has to be started to mount " | |
816 | "a read-write clustered device.\n"); | |
817 | return -EINVAL; | |
818 | } | |
819 | } | |
820 | ||
821 | return 0; | |
822 | } | |
823 | ||
824 | /* | |
825 | * If we're using a userspace stack, mount should have passed | |
826 | * a name that matches the disk. If not, mount should not | |
827 | * have passed a stack. | |
828 | */ | |
829 | static int ocfs2_verify_userspace_stack(struct ocfs2_super *osb, | |
830 | struct mount_options *mopt) | |
831 | { | |
832 | if (!ocfs2_userspace_stack(osb) && mopt->cluster_stack[0]) { | |
833 | mlog(ML_ERROR, | |
834 | "cluster stack passed to mount, but this filesystem " | |
835 | "does not support it\n"); | |
836 | return -EINVAL; | |
837 | } | |
838 | ||
839 | if (ocfs2_userspace_stack(osb) && | |
840 | strncmp(osb->osb_cluster_stack, mopt->cluster_stack, | |
841 | OCFS2_STACK_LABEL_LEN)) { | |
842 | mlog(ML_ERROR, | |
843 | "cluster stack passed to mount (\"%s\") does not " | |
844 | "match the filesystem (\"%s\")\n", | |
845 | mopt->cluster_stack, | |
846 | osb->osb_cluster_stack); | |
847 | return -EINVAL; | |
848 | } | |
849 | ||
850 | return 0; | |
851 | } | |
852 | ||
853 | static int ocfs2_susp_quotas(struct ocfs2_super *osb, int unsuspend) | |
854 | { | |
855 | int type; | |
856 | struct super_block *sb = osb->sb; | |
857 | unsigned int feature[MAXQUOTAS] = { OCFS2_FEATURE_RO_COMPAT_USRQUOTA, | |
858 | OCFS2_FEATURE_RO_COMPAT_GRPQUOTA}; | |
859 | int status = 0; | |
860 | ||
861 | for (type = 0; type < MAXQUOTAS; type++) { | |
862 | if (!OCFS2_HAS_RO_COMPAT_FEATURE(sb, feature[type])) | |
863 | continue; | |
864 | if (unsuspend) | |
865 | status = vfs_quota_enable( | |
866 | sb_dqopt(sb)->files[type], | |
867 | type, QFMT_OCFS2, | |
868 | DQUOT_SUSPENDED); | |
869 | else | |
870 | status = vfs_quota_disable(sb, type, | |
871 | DQUOT_SUSPENDED); | |
872 | if (status < 0) | |
873 | break; | |
874 | } | |
875 | if (status < 0) | |
876 | mlog(ML_ERROR, "Failed to suspend/unsuspend quotas on " | |
877 | "remount (error = %d).\n", status); | |
878 | return status; | |
879 | } | |
880 | ||
881 | static int ocfs2_enable_quotas(struct ocfs2_super *osb) | |
882 | { | |
883 | struct inode *inode[MAXQUOTAS] = { NULL, NULL }; | |
884 | struct super_block *sb = osb->sb; | |
885 | unsigned int feature[MAXQUOTAS] = { OCFS2_FEATURE_RO_COMPAT_USRQUOTA, | |
886 | OCFS2_FEATURE_RO_COMPAT_GRPQUOTA}; | |
887 | unsigned int ino[MAXQUOTAS] = { LOCAL_USER_QUOTA_SYSTEM_INODE, | |
888 | LOCAL_GROUP_QUOTA_SYSTEM_INODE }; | |
889 | int status; | |
890 | int type; | |
891 | ||
892 | sb_dqopt(sb)->flags |= DQUOT_QUOTA_SYS_FILE | DQUOT_NEGATIVE_USAGE; | |
893 | for (type = 0; type < MAXQUOTAS; type++) { | |
894 | if (!OCFS2_HAS_RO_COMPAT_FEATURE(sb, feature[type])) | |
895 | continue; | |
896 | inode[type] = ocfs2_get_system_file_inode(osb, ino[type], | |
897 | osb->slot_num); | |
898 | if (!inode[type]) { | |
899 | status = -ENOENT; | |
900 | goto out_quota_off; | |
901 | } | |
902 | status = vfs_quota_enable(inode[type], type, QFMT_OCFS2, | |
903 | DQUOT_USAGE_ENABLED); | |
904 | if (status < 0) | |
905 | goto out_quota_off; | |
906 | } | |
907 | ||
908 | for (type = 0; type < MAXQUOTAS; type++) | |
909 | iput(inode[type]); | |
910 | return 0; | |
911 | out_quota_off: | |
912 | ocfs2_disable_quotas(osb); | |
913 | for (type = 0; type < MAXQUOTAS; type++) | |
914 | iput(inode[type]); | |
915 | mlog_errno(status); | |
916 | return status; | |
917 | } | |
918 | ||
919 | static void ocfs2_disable_quotas(struct ocfs2_super *osb) | |
920 | { | |
921 | int type; | |
922 | struct inode *inode; | |
923 | struct super_block *sb = osb->sb; | |
924 | ||
925 | /* We mostly ignore errors in this function because there's not much | |
926 | * we can do when we see them */ | |
927 | for (type = 0; type < MAXQUOTAS; type++) { | |
928 | if (!sb_has_quota_loaded(sb, type)) | |
929 | continue; | |
930 | inode = igrab(sb->s_dquot.files[type]); | |
931 | /* Turn off quotas. This will remove all dquot structures from | |
932 | * memory and so they will be automatically synced to global | |
933 | * quota files */ | |
934 | vfs_quota_disable(sb, type, DQUOT_USAGE_ENABLED | | |
935 | DQUOT_LIMITS_ENABLED); | |
936 | if (!inode) | |
937 | continue; | |
938 | iput(inode); | |
939 | } | |
940 | } | |
941 | ||
942 | /* Handle quota on quotactl */ | |
943 | static int ocfs2_quota_on(struct super_block *sb, int type, int format_id, | |
944 | char *path, int remount) | |
945 | { | |
946 | unsigned int feature[MAXQUOTAS] = { OCFS2_FEATURE_RO_COMPAT_USRQUOTA, | |
947 | OCFS2_FEATURE_RO_COMPAT_GRPQUOTA}; | |
948 | ||
949 | if (!OCFS2_HAS_RO_COMPAT_FEATURE(sb, feature[type])) | |
950 | return -EINVAL; | |
951 | ||
952 | if (remount) | |
953 | return 0; /* Just ignore it has been handled in | |
954 | * ocfs2_remount() */ | |
955 | return vfs_quota_enable(sb_dqopt(sb)->files[type], type, | |
956 | format_id, DQUOT_LIMITS_ENABLED); | |
957 | } | |
958 | ||
959 | /* Handle quota off quotactl */ | |
960 | static int ocfs2_quota_off(struct super_block *sb, int type, int remount) | |
961 | { | |
962 | if (remount) | |
963 | return 0; /* Ignore now and handle later in | |
964 | * ocfs2_remount() */ | |
965 | return vfs_quota_disable(sb, type, DQUOT_LIMITS_ENABLED); | |
966 | } | |
967 | ||
968 | static struct quotactl_ops ocfs2_quotactl_ops = { | |
969 | .quota_on = ocfs2_quota_on, | |
970 | .quota_off = ocfs2_quota_off, | |
971 | .quota_sync = vfs_quota_sync, | |
972 | .get_info = vfs_get_dqinfo, | |
973 | .set_info = vfs_set_dqinfo, | |
974 | .get_dqblk = vfs_get_dqblk, | |
975 | .set_dqblk = vfs_set_dqblk, | |
976 | }; | |
977 | ||
978 | static int ocfs2_fill_super(struct super_block *sb, void *data, int silent) | |
979 | { | |
980 | struct dentry *root; | |
981 | int status, sector_size; | |
982 | struct mount_options parsed_options; | |
983 | struct inode *inode = NULL; | |
984 | struct ocfs2_super *osb = NULL; | |
985 | struct buffer_head *bh = NULL; | |
986 | char nodestr[8]; | |
987 | struct ocfs2_blockcheck_stats stats; | |
988 | ||
989 | mlog_entry("%p, %p, %i", sb, data, silent); | |
990 | ||
991 | if (!ocfs2_parse_options(sb, data, &parsed_options, 0)) { | |
992 | status = -EINVAL; | |
993 | goto read_super_error; | |
994 | } | |
995 | ||
996 | /* probe for superblock */ | |
997 | status = ocfs2_sb_probe(sb, &bh, §or_size, &stats); | |
998 | if (status < 0) { | |
999 | mlog(ML_ERROR, "superblock probe failed!\n"); | |
1000 | goto read_super_error; | |
1001 | } | |
1002 | ||
1003 | status = ocfs2_initialize_super(sb, bh, sector_size, &stats); | |
1004 | osb = OCFS2_SB(sb); | |
1005 | if (status < 0) { | |
1006 | mlog_errno(status); | |
1007 | goto read_super_error; | |
1008 | } | |
1009 | brelse(bh); | |
1010 | bh = NULL; | |
1011 | ||
1012 | if (!(osb->s_feature_incompat & OCFS2_FEATURE_INCOMPAT_XATTR)) | |
1013 | parsed_options.mount_opt &= ~OCFS2_MOUNT_POSIX_ACL; | |
1014 | ||
1015 | osb->s_mount_opt = parsed_options.mount_opt; | |
1016 | osb->s_atime_quantum = parsed_options.atime_quantum; | |
1017 | osb->preferred_slot = parsed_options.slot; | |
1018 | osb->osb_commit_interval = parsed_options.commit_interval; | |
1019 | osb->local_alloc_default_bits = ocfs2_megabytes_to_clusters(sb, parsed_options.localalloc_opt); | |
1020 | osb->local_alloc_bits = osb->local_alloc_default_bits; | |
1021 | if (osb->s_mount_opt & OCFS2_MOUNT_USRQUOTA && | |
1022 | !OCFS2_HAS_RO_COMPAT_FEATURE(sb, | |
1023 | OCFS2_FEATURE_RO_COMPAT_USRQUOTA)) { | |
1024 | status = -EINVAL; | |
1025 | mlog(ML_ERROR, "User quotas were requested, but this " | |
1026 | "filesystem does not have the feature enabled.\n"); | |
1027 | goto read_super_error; | |
1028 | } | |
1029 | if (osb->s_mount_opt & OCFS2_MOUNT_GRPQUOTA && | |
1030 | !OCFS2_HAS_RO_COMPAT_FEATURE(sb, | |
1031 | OCFS2_FEATURE_RO_COMPAT_GRPQUOTA)) { | |
1032 | status = -EINVAL; | |
1033 | mlog(ML_ERROR, "Group quotas were requested, but this " | |
1034 | "filesystem does not have the feature enabled.\n"); | |
1035 | goto read_super_error; | |
1036 | } | |
1037 | ||
1038 | status = ocfs2_verify_userspace_stack(osb, &parsed_options); | |
1039 | if (status) | |
1040 | goto read_super_error; | |
1041 | ||
1042 | sb->s_magic = OCFS2_SUPER_MAGIC; | |
1043 | ||
1044 | sb->s_flags = (sb->s_flags & ~MS_POSIXACL) | | |
1045 | ((osb->s_mount_opt & OCFS2_MOUNT_POSIX_ACL) ? MS_POSIXACL : 0); | |
1046 | ||
1047 | /* Hard readonly mode only if: bdev_read_only, MS_RDONLY, | |
1048 | * heartbeat=none */ | |
1049 | if (bdev_read_only(sb->s_bdev)) { | |
1050 | if (!(sb->s_flags & MS_RDONLY)) { | |
1051 | status = -EACCES; | |
1052 | mlog(ML_ERROR, "Readonly device detected but readonly " | |
1053 | "mount was not specified.\n"); | |
1054 | goto read_super_error; | |
1055 | } | |
1056 | ||
1057 | /* You should not be able to start a local heartbeat | |
1058 | * on a readonly device. */ | |
1059 | if (osb->s_mount_opt & OCFS2_MOUNT_HB_LOCAL) { | |
1060 | status = -EROFS; | |
1061 | mlog(ML_ERROR, "Local heartbeat specified on readonly " | |
1062 | "device.\n"); | |
1063 | goto read_super_error; | |
1064 | } | |
1065 | ||
1066 | status = ocfs2_check_journals_nolocks(osb); | |
1067 | if (status < 0) { | |
1068 | if (status == -EROFS) | |
1069 | mlog(ML_ERROR, "Recovery required on readonly " | |
1070 | "file system, but write access is " | |
1071 | "unavailable.\n"); | |
1072 | else | |
1073 | mlog_errno(status); | |
1074 | goto read_super_error; | |
1075 | } | |
1076 | ||
1077 | ocfs2_set_ro_flag(osb, 1); | |
1078 | ||
1079 | printk(KERN_NOTICE "Readonly device detected. No cluster " | |
1080 | "services will be utilized for this mount. Recovery " | |
1081 | "will be skipped.\n"); | |
1082 | } | |
1083 | ||
1084 | if (!ocfs2_is_hard_readonly(osb)) { | |
1085 | if (sb->s_flags & MS_RDONLY) | |
1086 | ocfs2_set_ro_flag(osb, 0); | |
1087 | } | |
1088 | ||
1089 | status = ocfs2_verify_heartbeat(osb); | |
1090 | if (status < 0) { | |
1091 | mlog_errno(status); | |
1092 | goto read_super_error; | |
1093 | } | |
1094 | ||
1095 | osb->osb_debug_root = debugfs_create_dir(osb->uuid_str, | |
1096 | ocfs2_debugfs_root); | |
1097 | if (!osb->osb_debug_root) { | |
1098 | status = -EINVAL; | |
1099 | mlog(ML_ERROR, "Unable to create per-mount debugfs root.\n"); | |
1100 | goto read_super_error; | |
1101 | } | |
1102 | ||
1103 | osb->osb_ctxt = debugfs_create_file("fs_state", S_IFREG|S_IRUSR, | |
1104 | osb->osb_debug_root, | |
1105 | osb, | |
1106 | &ocfs2_osb_debug_fops); | |
1107 | if (!osb->osb_ctxt) { | |
1108 | status = -EINVAL; | |
1109 | mlog_errno(status); | |
1110 | goto read_super_error; | |
1111 | } | |
1112 | ||
1113 | if (ocfs2_meta_ecc(osb)) { | |
1114 | status = ocfs2_blockcheck_stats_debugfs_install( | |
1115 | &osb->osb_ecc_stats, | |
1116 | osb->osb_debug_root); | |
1117 | if (status) { | |
1118 | mlog(ML_ERROR, | |
1119 | "Unable to create blockcheck statistics " | |
1120 | "files\n"); | |
1121 | goto read_super_error; | |
1122 | } | |
1123 | } | |
1124 | ||
1125 | status = ocfs2_mount_volume(sb); | |
1126 | if (osb->root_inode) | |
1127 | inode = igrab(osb->root_inode); | |
1128 | ||
1129 | if (status < 0) | |
1130 | goto read_super_error; | |
1131 | ||
1132 | if (!inode) { | |
1133 | status = -EIO; | |
1134 | mlog_errno(status); | |
1135 | goto read_super_error; | |
1136 | } | |
1137 | ||
1138 | root = d_alloc_root(inode); | |
1139 | if (!root) { | |
1140 | status = -ENOMEM; | |
1141 | mlog_errno(status); | |
1142 | goto read_super_error; | |
1143 | } | |
1144 | ||
1145 | sb->s_root = root; | |
1146 | ||
1147 | ocfs2_complete_mount_recovery(osb); | |
1148 | ||
1149 | if (ocfs2_mount_local(osb)) | |
1150 | snprintf(nodestr, sizeof(nodestr), "local"); | |
1151 | else | |
1152 | snprintf(nodestr, sizeof(nodestr), "%u", osb->node_num); | |
1153 | ||
1154 | printk(KERN_INFO "ocfs2: Mounting device (%s) on (node %s, slot %d) " | |
1155 | "with %s data mode.\n", | |
1156 | osb->dev_str, nodestr, osb->slot_num, | |
1157 | osb->s_mount_opt & OCFS2_MOUNT_DATA_WRITEBACK ? "writeback" : | |
1158 | "ordered"); | |
1159 | ||
1160 | atomic_set(&osb->vol_state, VOLUME_MOUNTED); | |
1161 | wake_up(&osb->osb_mount_event); | |
1162 | ||
1163 | /* Now we can initialize quotas because we can afford to wait | |
1164 | * for cluster locks recovery now. That also means that truncation | |
1165 | * log recovery can happen but that waits for proper quota setup */ | |
1166 | if (!(sb->s_flags & MS_RDONLY)) { | |
1167 | status = ocfs2_enable_quotas(osb); | |
1168 | if (status < 0) { | |
1169 | /* We have to err-out specially here because | |
1170 | * s_root is already set */ | |
1171 | mlog_errno(status); | |
1172 | atomic_set(&osb->vol_state, VOLUME_DISABLED); | |
1173 | wake_up(&osb->osb_mount_event); | |
1174 | mlog_exit(status); | |
1175 | return status; | |
1176 | } | |
1177 | } | |
1178 | ||
1179 | ocfs2_complete_quota_recovery(osb); | |
1180 | ||
1181 | /* Now we wake up again for processes waiting for quotas */ | |
1182 | atomic_set(&osb->vol_state, VOLUME_MOUNTED_QUOTAS); | |
1183 | wake_up(&osb->osb_mount_event); | |
1184 | ||
1185 | /* Start this when the mount is almost sure of being successful */ | |
1186 | ocfs2_orphan_scan_start(osb); | |
1187 | ||
1188 | mlog_exit(status); | |
1189 | return status; | |
1190 | ||
1191 | read_super_error: | |
1192 | brelse(bh); | |
1193 | ||
1194 | if (inode) | |
1195 | iput(inode); | |
1196 | ||
1197 | if (osb) { | |
1198 | atomic_set(&osb->vol_state, VOLUME_DISABLED); | |
1199 | wake_up(&osb->osb_mount_event); | |
1200 | ocfs2_dismount_volume(sb, 1); | |
1201 | } | |
1202 | ||
1203 | mlog_exit(status); | |
1204 | return status; | |
1205 | } | |
1206 | ||
1207 | static int ocfs2_get_sb(struct file_system_type *fs_type, | |
1208 | int flags, | |
1209 | const char *dev_name, | |
1210 | void *data, | |
1211 | struct vfsmount *mnt) | |
1212 | { | |
1213 | return get_sb_bdev(fs_type, flags, dev_name, data, ocfs2_fill_super, | |
1214 | mnt); | |
1215 | } | |
1216 | ||
1217 | static void ocfs2_kill_sb(struct super_block *sb) | |
1218 | { | |
1219 | struct ocfs2_super *osb = OCFS2_SB(sb); | |
1220 | ||
1221 | /* Failed mount? */ | |
1222 | if (!osb || atomic_read(&osb->vol_state) == VOLUME_DISABLED) | |
1223 | goto out; | |
1224 | ||
1225 | /* Prevent further queueing of inode drop events */ | |
1226 | spin_lock(&dentry_list_lock); | |
1227 | ocfs2_set_osb_flag(osb, OCFS2_OSB_DROP_DENTRY_LOCK_IMMED); | |
1228 | spin_unlock(&dentry_list_lock); | |
1229 | /* Wait for work to finish and/or remove it */ | |
1230 | cancel_work_sync(&osb->dentry_lock_work); | |
1231 | out: | |
1232 | kill_block_super(sb); | |
1233 | } | |
1234 | ||
1235 | static struct file_system_type ocfs2_fs_type = { | |
1236 | .owner = THIS_MODULE, | |
1237 | .name = "ocfs2", | |
1238 | .get_sb = ocfs2_get_sb, /* is this called when we mount | |
1239 | * the fs? */ | |
1240 | .kill_sb = ocfs2_kill_sb, | |
1241 | ||
1242 | .fs_flags = FS_REQUIRES_DEV|FS_RENAME_DOES_D_MOVE, | |
1243 | .next = NULL | |
1244 | }; | |
1245 | ||
1246 | static int ocfs2_parse_options(struct super_block *sb, | |
1247 | char *options, | |
1248 | struct mount_options *mopt, | |
1249 | int is_remount) | |
1250 | { | |
1251 | int status; | |
1252 | char *p; | |
1253 | ||
1254 | mlog_entry("remount: %d, options: \"%s\"\n", is_remount, | |
1255 | options ? options : "(none)"); | |
1256 | ||
1257 | mopt->commit_interval = 0; | |
1258 | mopt->mount_opt = 0; | |
1259 | mopt->atime_quantum = OCFS2_DEFAULT_ATIME_QUANTUM; | |
1260 | mopt->slot = OCFS2_INVALID_SLOT; | |
1261 | mopt->localalloc_opt = OCFS2_DEFAULT_LOCAL_ALLOC_SIZE; | |
1262 | mopt->cluster_stack[0] = '\0'; | |
1263 | ||
1264 | if (!options) { | |
1265 | status = 1; | |
1266 | goto bail; | |
1267 | } | |
1268 | ||
1269 | while ((p = strsep(&options, ",")) != NULL) { | |
1270 | int token, option; | |
1271 | substring_t args[MAX_OPT_ARGS]; | |
1272 | ||
1273 | if (!*p) | |
1274 | continue; | |
1275 | ||
1276 | token = match_token(p, tokens, args); | |
1277 | switch (token) { | |
1278 | case Opt_hb_local: | |
1279 | mopt->mount_opt |= OCFS2_MOUNT_HB_LOCAL; | |
1280 | break; | |
1281 | case Opt_hb_none: | |
1282 | mopt->mount_opt &= ~OCFS2_MOUNT_HB_LOCAL; | |
1283 | break; | |
1284 | case Opt_barrier: | |
1285 | if (match_int(&args[0], &option)) { | |
1286 | status = 0; | |
1287 | goto bail; | |
1288 | } | |
1289 | if (option) | |
1290 | mopt->mount_opt |= OCFS2_MOUNT_BARRIER; | |
1291 | else | |
1292 | mopt->mount_opt &= ~OCFS2_MOUNT_BARRIER; | |
1293 | break; | |
1294 | case Opt_intr: | |
1295 | mopt->mount_opt &= ~OCFS2_MOUNT_NOINTR; | |
1296 | break; | |
1297 | case Opt_nointr: | |
1298 | mopt->mount_opt |= OCFS2_MOUNT_NOINTR; | |
1299 | break; | |
1300 | case Opt_err_panic: | |
1301 | mopt->mount_opt |= OCFS2_MOUNT_ERRORS_PANIC; | |
1302 | break; | |
1303 | case Opt_err_ro: | |
1304 | mopt->mount_opt &= ~OCFS2_MOUNT_ERRORS_PANIC; | |
1305 | break; | |
1306 | case Opt_data_ordered: | |
1307 | mopt->mount_opt &= ~OCFS2_MOUNT_DATA_WRITEBACK; | |
1308 | break; | |
1309 | case Opt_data_writeback: | |
1310 | mopt->mount_opt |= OCFS2_MOUNT_DATA_WRITEBACK; | |
1311 | break; | |
1312 | case Opt_user_xattr: | |
1313 | mopt->mount_opt &= ~OCFS2_MOUNT_NOUSERXATTR; | |
1314 | break; | |
1315 | case Opt_nouser_xattr: | |
1316 | mopt->mount_opt |= OCFS2_MOUNT_NOUSERXATTR; | |
1317 | break; | |
1318 | case Opt_atime_quantum: | |
1319 | if (match_int(&args[0], &option)) { | |
1320 | status = 0; | |
1321 | goto bail; | |
1322 | } | |
1323 | if (option >= 0) | |
1324 | mopt->atime_quantum = option; | |
1325 | break; | |
1326 | case Opt_slot: | |
1327 | option = 0; | |
1328 | if (match_int(&args[0], &option)) { | |
1329 | status = 0; | |
1330 | goto bail; | |
1331 | } | |
1332 | if (option) | |
1333 | mopt->slot = (s16)option; | |
1334 | break; | |
1335 | case Opt_commit: | |
1336 | option = 0; | |
1337 | if (match_int(&args[0], &option)) { | |
1338 | status = 0; | |
1339 | goto bail; | |
1340 | } | |
1341 | if (option < 0) | |
1342 | return 0; | |
1343 | if (option == 0) | |
1344 | option = JBD2_DEFAULT_MAX_COMMIT_AGE; | |
1345 | mopt->commit_interval = HZ * option; | |
1346 | break; | |
1347 | case Opt_localalloc: | |
1348 | option = 0; | |
1349 | if (match_int(&args[0], &option)) { | |
1350 | status = 0; | |
1351 | goto bail; | |
1352 | } | |
1353 | if (option >= 0 && (option <= ocfs2_local_alloc_size(sb) * 8)) | |
1354 | mopt->localalloc_opt = option; | |
1355 | break; | |
1356 | case Opt_localflocks: | |
1357 | /* | |
1358 | * Changing this during remount could race | |
1359 | * flock() requests, or "unbalance" existing | |
1360 | * ones (e.g., a lock is taken in one mode but | |
1361 | * dropped in the other). If users care enough | |
1362 | * to flip locking modes during remount, we | |
1363 | * could add a "local" flag to individual | |
1364 | * flock structures for proper tracking of | |
1365 | * state. | |
1366 | */ | |
1367 | if (!is_remount) | |
1368 | mopt->mount_opt |= OCFS2_MOUNT_LOCALFLOCKS; | |
1369 | break; | |
1370 | case Opt_stack: | |
1371 | /* Check both that the option we were passed | |
1372 | * is of the right length and that it is a proper | |
1373 | * string of the right length. | |
1374 | */ | |
1375 | if (((args[0].to - args[0].from) != | |
1376 | OCFS2_STACK_LABEL_LEN) || | |
1377 | (strnlen(args[0].from, | |
1378 | OCFS2_STACK_LABEL_LEN) != | |
1379 | OCFS2_STACK_LABEL_LEN)) { | |
1380 | mlog(ML_ERROR, | |
1381 | "Invalid cluster_stack option\n"); | |
1382 | status = 0; | |
1383 | goto bail; | |
1384 | } | |
1385 | memcpy(mopt->cluster_stack, args[0].from, | |
1386 | OCFS2_STACK_LABEL_LEN); | |
1387 | mopt->cluster_stack[OCFS2_STACK_LABEL_LEN] = '\0'; | |
1388 | break; | |
1389 | case Opt_inode64: | |
1390 | mopt->mount_opt |= OCFS2_MOUNT_INODE64; | |
1391 | break; | |
1392 | case Opt_usrquota: | |
1393 | /* We check only on remount, otherwise features | |
1394 | * aren't yet initialized. */ | |
1395 | if (is_remount && !OCFS2_HAS_RO_COMPAT_FEATURE(sb, | |
1396 | OCFS2_FEATURE_RO_COMPAT_USRQUOTA)) { | |
1397 | mlog(ML_ERROR, "User quota requested but " | |
1398 | "filesystem feature is not set\n"); | |
1399 | status = 0; | |
1400 | goto bail; | |
1401 | } | |
1402 | mopt->mount_opt |= OCFS2_MOUNT_USRQUOTA; | |
1403 | break; | |
1404 | case Opt_grpquota: | |
1405 | if (is_remount && !OCFS2_HAS_RO_COMPAT_FEATURE(sb, | |
1406 | OCFS2_FEATURE_RO_COMPAT_GRPQUOTA)) { | |
1407 | mlog(ML_ERROR, "Group quota requested but " | |
1408 | "filesystem feature is not set\n"); | |
1409 | status = 0; | |
1410 | goto bail; | |
1411 | } | |
1412 | mopt->mount_opt |= OCFS2_MOUNT_GRPQUOTA; | |
1413 | break; | |
1414 | #ifdef CONFIG_OCFS2_FS_POSIX_ACL | |
1415 | case Opt_acl: | |
1416 | mopt->mount_opt |= OCFS2_MOUNT_POSIX_ACL; | |
1417 | break; | |
1418 | case Opt_noacl: | |
1419 | mopt->mount_opt &= ~OCFS2_MOUNT_POSIX_ACL; | |
1420 | break; | |
1421 | #else | |
1422 | case Opt_acl: | |
1423 | case Opt_noacl: | |
1424 | printk(KERN_INFO "ocfs2 (no)acl options not supported\n"); | |
1425 | break; | |
1426 | #endif | |
1427 | default: | |
1428 | mlog(ML_ERROR, | |
1429 | "Unrecognized mount option \"%s\" " | |
1430 | "or missing value\n", p); | |
1431 | status = 0; | |
1432 | goto bail; | |
1433 | } | |
1434 | } | |
1435 | ||
1436 | status = 1; | |
1437 | ||
1438 | bail: | |
1439 | mlog_exit(status); | |
1440 | return status; | |
1441 | } | |
1442 | ||
1443 | static int ocfs2_show_options(struct seq_file *s, struct vfsmount *mnt) | |
1444 | { | |
1445 | struct ocfs2_super *osb = OCFS2_SB(mnt->mnt_sb); | |
1446 | unsigned long opts = osb->s_mount_opt; | |
1447 | unsigned int local_alloc_megs; | |
1448 | ||
1449 | if (opts & OCFS2_MOUNT_HB_LOCAL) | |
1450 | seq_printf(s, ",_netdev,heartbeat=local"); | |
1451 | else | |
1452 | seq_printf(s, ",heartbeat=none"); | |
1453 | ||
1454 | if (opts & OCFS2_MOUNT_NOINTR) | |
1455 | seq_printf(s, ",nointr"); | |
1456 | ||
1457 | if (opts & OCFS2_MOUNT_DATA_WRITEBACK) | |
1458 | seq_printf(s, ",data=writeback"); | |
1459 | else | |
1460 | seq_printf(s, ",data=ordered"); | |
1461 | ||
1462 | if (opts & OCFS2_MOUNT_BARRIER) | |
1463 | seq_printf(s, ",barrier=1"); | |
1464 | ||
1465 | if (opts & OCFS2_MOUNT_ERRORS_PANIC) | |
1466 | seq_printf(s, ",errors=panic"); | |
1467 | else | |
1468 | seq_printf(s, ",errors=remount-ro"); | |
1469 | ||
1470 | if (osb->preferred_slot != OCFS2_INVALID_SLOT) | |
1471 | seq_printf(s, ",preferred_slot=%d", osb->preferred_slot); | |
1472 | ||
1473 | if (osb->s_atime_quantum != OCFS2_DEFAULT_ATIME_QUANTUM) | |
1474 | seq_printf(s, ",atime_quantum=%u", osb->s_atime_quantum); | |
1475 | ||
1476 | if (osb->osb_commit_interval) | |
1477 | seq_printf(s, ",commit=%u", | |
1478 | (unsigned) (osb->osb_commit_interval / HZ)); | |
1479 | ||
1480 | local_alloc_megs = osb->local_alloc_bits >> (20 - osb->s_clustersize_bits); | |
1481 | if (local_alloc_megs != OCFS2_DEFAULT_LOCAL_ALLOC_SIZE) | |
1482 | seq_printf(s, ",localalloc=%d", local_alloc_megs); | |
1483 | ||
1484 | if (opts & OCFS2_MOUNT_LOCALFLOCKS) | |
1485 | seq_printf(s, ",localflocks,"); | |
1486 | ||
1487 | if (osb->osb_cluster_stack[0]) | |
1488 | seq_printf(s, ",cluster_stack=%.*s", OCFS2_STACK_LABEL_LEN, | |
1489 | osb->osb_cluster_stack); | |
1490 | if (opts & OCFS2_MOUNT_USRQUOTA) | |
1491 | seq_printf(s, ",usrquota"); | |
1492 | if (opts & OCFS2_MOUNT_GRPQUOTA) | |
1493 | seq_printf(s, ",grpquota"); | |
1494 | ||
1495 | if (opts & OCFS2_MOUNT_NOUSERXATTR) | |
1496 | seq_printf(s, ",nouser_xattr"); | |
1497 | else | |
1498 | seq_printf(s, ",user_xattr"); | |
1499 | ||
1500 | if (opts & OCFS2_MOUNT_INODE64) | |
1501 | seq_printf(s, ",inode64"); | |
1502 | ||
1503 | #ifdef CONFIG_OCFS2_FS_POSIX_ACL | |
1504 | if (opts & OCFS2_MOUNT_POSIX_ACL) | |
1505 | seq_printf(s, ",acl"); | |
1506 | else | |
1507 | seq_printf(s, ",noacl"); | |
1508 | #endif | |
1509 | ||
1510 | return 0; | |
1511 | } | |
1512 | ||
1513 | static int __init ocfs2_init(void) | |
1514 | { | |
1515 | int status; | |
1516 | ||
1517 | mlog_entry_void(); | |
1518 | ||
1519 | ocfs2_print_version(); | |
1520 | ||
1521 | status = init_ocfs2_uptodate_cache(); | |
1522 | if (status < 0) { | |
1523 | mlog_errno(status); | |
1524 | goto leave; | |
1525 | } | |
1526 | ||
1527 | status = ocfs2_initialize_mem_caches(); | |
1528 | if (status < 0) { | |
1529 | mlog_errno(status); | |
1530 | goto leave; | |
1531 | } | |
1532 | ||
1533 | ocfs2_wq = create_singlethread_workqueue("ocfs2_wq"); | |
1534 | if (!ocfs2_wq) { | |
1535 | status = -ENOMEM; | |
1536 | goto leave; | |
1537 | } | |
1538 | ||
1539 | ocfs2_debugfs_root = debugfs_create_dir("ocfs2", NULL); | |
1540 | if (!ocfs2_debugfs_root) { | |
1541 | status = -EFAULT; | |
1542 | mlog(ML_ERROR, "Unable to create ocfs2 debugfs root.\n"); | |
1543 | } | |
1544 | ||
1545 | status = ocfs2_quota_setup(); | |
1546 | if (status) | |
1547 | goto leave; | |
1548 | ||
1549 | ocfs2_set_locking_protocol(); | |
1550 | ||
1551 | status = register_quota_format(&ocfs2_quota_format); | |
1552 | leave: | |
1553 | if (status < 0) { | |
1554 | ocfs2_quota_shutdown(); | |
1555 | ocfs2_free_mem_caches(); | |
1556 | exit_ocfs2_uptodate_cache(); | |
1557 | } | |
1558 | ||
1559 | mlog_exit(status); | |
1560 | ||
1561 | if (status >= 0) { | |
1562 | return register_filesystem(&ocfs2_fs_type); | |
1563 | } else | |
1564 | return -1; | |
1565 | } | |
1566 | ||
1567 | static void __exit ocfs2_exit(void) | |
1568 | { | |
1569 | mlog_entry_void(); | |
1570 | ||
1571 | ocfs2_quota_shutdown(); | |
1572 | ||
1573 | if (ocfs2_wq) { | |
1574 | flush_workqueue(ocfs2_wq); | |
1575 | destroy_workqueue(ocfs2_wq); | |
1576 | } | |
1577 | ||
1578 | unregister_quota_format(&ocfs2_quota_format); | |
1579 | ||
1580 | debugfs_remove(ocfs2_debugfs_root); | |
1581 | ||
1582 | ocfs2_free_mem_caches(); | |
1583 | ||
1584 | unregister_filesystem(&ocfs2_fs_type); | |
1585 | ||
1586 | exit_ocfs2_uptodate_cache(); | |
1587 | ||
1588 | mlog_exit_void(); | |
1589 | } | |
1590 | ||
1591 | static void ocfs2_put_super(struct super_block *sb) | |
1592 | { | |
1593 | mlog_entry("(0x%p)\n", sb); | |
1594 | ||
1595 | lock_kernel(); | |
1596 | ||
1597 | ocfs2_sync_blockdev(sb); | |
1598 | ocfs2_dismount_volume(sb, 0); | |
1599 | ||
1600 | unlock_kernel(); | |
1601 | ||
1602 | mlog_exit_void(); | |
1603 | } | |
1604 | ||
1605 | static int ocfs2_statfs(struct dentry *dentry, struct kstatfs *buf) | |
1606 | { | |
1607 | struct ocfs2_super *osb; | |
1608 | u32 numbits, freebits; | |
1609 | int status; | |
1610 | struct ocfs2_dinode *bm_lock; | |
1611 | struct buffer_head *bh = NULL; | |
1612 | struct inode *inode = NULL; | |
1613 | ||
1614 | mlog_entry("(%p, %p)\n", dentry->d_sb, buf); | |
1615 | ||
1616 | osb = OCFS2_SB(dentry->d_sb); | |
1617 | ||
1618 | inode = ocfs2_get_system_file_inode(osb, | |
1619 | GLOBAL_BITMAP_SYSTEM_INODE, | |
1620 | OCFS2_INVALID_SLOT); | |
1621 | if (!inode) { | |
1622 | mlog(ML_ERROR, "failed to get bitmap inode\n"); | |
1623 | status = -EIO; | |
1624 | goto bail; | |
1625 | } | |
1626 | ||
1627 | status = ocfs2_inode_lock(inode, &bh, 0); | |
1628 | if (status < 0) { | |
1629 | mlog_errno(status); | |
1630 | goto bail; | |
1631 | } | |
1632 | ||
1633 | bm_lock = (struct ocfs2_dinode *) bh->b_data; | |
1634 | ||
1635 | numbits = le32_to_cpu(bm_lock->id1.bitmap1.i_total); | |
1636 | freebits = numbits - le32_to_cpu(bm_lock->id1.bitmap1.i_used); | |
1637 | ||
1638 | buf->f_type = OCFS2_SUPER_MAGIC; | |
1639 | buf->f_bsize = dentry->d_sb->s_blocksize; | |
1640 | buf->f_namelen = OCFS2_MAX_FILENAME_LEN; | |
1641 | buf->f_blocks = ((sector_t) numbits) * | |
1642 | (osb->s_clustersize >> osb->sb->s_blocksize_bits); | |
1643 | buf->f_bfree = ((sector_t) freebits) * | |
1644 | (osb->s_clustersize >> osb->sb->s_blocksize_bits); | |
1645 | buf->f_bavail = buf->f_bfree; | |
1646 | buf->f_files = numbits; | |
1647 | buf->f_ffree = freebits; | |
1648 | ||
1649 | brelse(bh); | |
1650 | ||
1651 | ocfs2_inode_unlock(inode, 0); | |
1652 | status = 0; | |
1653 | bail: | |
1654 | if (inode) | |
1655 | iput(inode); | |
1656 | ||
1657 | mlog_exit(status); | |
1658 | ||
1659 | return status; | |
1660 | } | |
1661 | ||
1662 | static void ocfs2_inode_init_once(void *data) | |
1663 | { | |
1664 | struct ocfs2_inode_info *oi = data; | |
1665 | ||
1666 | oi->ip_flags = 0; | |
1667 | oi->ip_open_count = 0; | |
1668 | spin_lock_init(&oi->ip_lock); | |
1669 | ocfs2_extent_map_init(&oi->vfs_inode); | |
1670 | INIT_LIST_HEAD(&oi->ip_io_markers); | |
1671 | oi->ip_created_trans = 0; | |
1672 | oi->ip_last_trans = 0; | |
1673 | oi->ip_dir_start_lookup = 0; | |
1674 | ||
1675 | init_rwsem(&oi->ip_alloc_sem); | |
1676 | init_rwsem(&oi->ip_xattr_sem); | |
1677 | mutex_init(&oi->ip_io_mutex); | |
1678 | ||
1679 | oi->ip_blkno = 0ULL; | |
1680 | oi->ip_clusters = 0; | |
1681 | ||
1682 | ocfs2_lock_res_init_once(&oi->ip_rw_lockres); | |
1683 | ocfs2_lock_res_init_once(&oi->ip_inode_lockres); | |
1684 | ocfs2_lock_res_init_once(&oi->ip_open_lockres); | |
1685 | ||
1686 | ocfs2_metadata_cache_init(&oi->ip_metadata_cache, &oi->ip_lock, | |
1687 | &oi->ip_io_mutex); | |
1688 | ||
1689 | inode_init_once(&oi->vfs_inode); | |
1690 | } | |
1691 | ||
1692 | static int ocfs2_initialize_mem_caches(void) | |
1693 | { | |
1694 | ocfs2_inode_cachep = kmem_cache_create("ocfs2_inode_cache", | |
1695 | sizeof(struct ocfs2_inode_info), | |
1696 | 0, | |
1697 | (SLAB_HWCACHE_ALIGN|SLAB_RECLAIM_ACCOUNT| | |
1698 | SLAB_MEM_SPREAD), | |
1699 | ocfs2_inode_init_once); | |
1700 | ocfs2_dquot_cachep = kmem_cache_create("ocfs2_dquot_cache", | |
1701 | sizeof(struct ocfs2_dquot), | |
1702 | 0, | |
1703 | (SLAB_HWCACHE_ALIGN|SLAB_RECLAIM_ACCOUNT| | |
1704 | SLAB_MEM_SPREAD), | |
1705 | NULL); | |
1706 | ocfs2_qf_chunk_cachep = kmem_cache_create("ocfs2_qf_chunk_cache", | |
1707 | sizeof(struct ocfs2_quota_chunk), | |
1708 | 0, | |
1709 | (SLAB_RECLAIM_ACCOUNT|SLAB_MEM_SPREAD), | |
1710 | NULL); | |
1711 | if (!ocfs2_inode_cachep || !ocfs2_dquot_cachep || | |
1712 | !ocfs2_qf_chunk_cachep) { | |
1713 | if (ocfs2_inode_cachep) | |
1714 | kmem_cache_destroy(ocfs2_inode_cachep); | |
1715 | if (ocfs2_dquot_cachep) | |
1716 | kmem_cache_destroy(ocfs2_dquot_cachep); | |
1717 | if (ocfs2_qf_chunk_cachep) | |
1718 | kmem_cache_destroy(ocfs2_qf_chunk_cachep); | |
1719 | return -ENOMEM; | |
1720 | } | |
1721 | ||
1722 | return 0; | |
1723 | } | |
1724 | ||
1725 | static void ocfs2_free_mem_caches(void) | |
1726 | { | |
1727 | if (ocfs2_inode_cachep) | |
1728 | kmem_cache_destroy(ocfs2_inode_cachep); | |
1729 | ocfs2_inode_cachep = NULL; | |
1730 | ||
1731 | if (ocfs2_dquot_cachep) | |
1732 | kmem_cache_destroy(ocfs2_dquot_cachep); | |
1733 | ocfs2_dquot_cachep = NULL; | |
1734 | ||
1735 | if (ocfs2_qf_chunk_cachep) | |
1736 | kmem_cache_destroy(ocfs2_qf_chunk_cachep); | |
1737 | ocfs2_qf_chunk_cachep = NULL; | |
1738 | } | |
1739 | ||
1740 | static int ocfs2_get_sector(struct super_block *sb, | |
1741 | struct buffer_head **bh, | |
1742 | int block, | |
1743 | int sect_size) | |
1744 | { | |
1745 | if (!sb_set_blocksize(sb, sect_size)) { | |
1746 | mlog(ML_ERROR, "unable to set blocksize\n"); | |
1747 | return -EIO; | |
1748 | } | |
1749 | ||
1750 | *bh = sb_getblk(sb, block); | |
1751 | if (!*bh) { | |
1752 | mlog_errno(-EIO); | |
1753 | return -EIO; | |
1754 | } | |
1755 | lock_buffer(*bh); | |
1756 | if (!buffer_dirty(*bh)) | |
1757 | clear_buffer_uptodate(*bh); | |
1758 | unlock_buffer(*bh); | |
1759 | ll_rw_block(READ, 1, bh); | |
1760 | wait_on_buffer(*bh); | |
1761 | if (!buffer_uptodate(*bh)) { | |
1762 | mlog_errno(-EIO); | |
1763 | brelse(*bh); | |
1764 | *bh = NULL; | |
1765 | return -EIO; | |
1766 | } | |
1767 | ||
1768 | return 0; | |
1769 | } | |
1770 | ||
1771 | static int ocfs2_mount_volume(struct super_block *sb) | |
1772 | { | |
1773 | int status = 0; | |
1774 | int unlock_super = 0; | |
1775 | struct ocfs2_super *osb = OCFS2_SB(sb); | |
1776 | ||
1777 | mlog_entry_void(); | |
1778 | ||
1779 | if (ocfs2_is_hard_readonly(osb)) | |
1780 | goto leave; | |
1781 | ||
1782 | status = ocfs2_dlm_init(osb); | |
1783 | if (status < 0) { | |
1784 | mlog_errno(status); | |
1785 | goto leave; | |
1786 | } | |
1787 | ||
1788 | status = ocfs2_super_lock(osb, 1); | |
1789 | if (status < 0) { | |
1790 | mlog_errno(status); | |
1791 | goto leave; | |
1792 | } | |
1793 | unlock_super = 1; | |
1794 | ||
1795 | /* This will load up the node map and add ourselves to it. */ | |
1796 | status = ocfs2_find_slot(osb); | |
1797 | if (status < 0) { | |
1798 | mlog_errno(status); | |
1799 | goto leave; | |
1800 | } | |
1801 | ||
1802 | /* load all node-local system inodes */ | |
1803 | status = ocfs2_init_local_system_inodes(osb); | |
1804 | if (status < 0) { | |
1805 | mlog_errno(status); | |
1806 | goto leave; | |
1807 | } | |
1808 | ||
1809 | status = ocfs2_check_volume(osb); | |
1810 | if (status < 0) { | |
1811 | mlog_errno(status); | |
1812 | goto leave; | |
1813 | } | |
1814 | ||
1815 | status = ocfs2_truncate_log_init(osb); | |
1816 | if (status < 0) | |
1817 | mlog_errno(status); | |
1818 | ||
1819 | leave: | |
1820 | if (unlock_super) | |
1821 | ocfs2_super_unlock(osb, 1); | |
1822 | ||
1823 | mlog_exit(status); | |
1824 | return status; | |
1825 | } | |
1826 | ||
1827 | static void ocfs2_dismount_volume(struct super_block *sb, int mnt_err) | |
1828 | { | |
1829 | int tmp, hangup_needed = 0; | |
1830 | struct ocfs2_super *osb = NULL; | |
1831 | char nodestr[8]; | |
1832 | ||
1833 | mlog_entry("(0x%p)\n", sb); | |
1834 | ||
1835 | BUG_ON(!sb); | |
1836 | osb = OCFS2_SB(sb); | |
1837 | BUG_ON(!osb); | |
1838 | ||
1839 | debugfs_remove(osb->osb_ctxt); | |
1840 | ||
1841 | /* | |
1842 | * Flush inode dropping work queue so that deletes are | |
1843 | * performed while the filesystem is still working | |
1844 | */ | |
1845 | ocfs2_drop_all_dl_inodes(osb); | |
1846 | ||
1847 | /* Orphan scan should be stopped as early as possible */ | |
1848 | ocfs2_orphan_scan_stop(osb); | |
1849 | ||
1850 | ocfs2_disable_quotas(osb); | |
1851 | ||
1852 | ocfs2_shutdown_local_alloc(osb); | |
1853 | ||
1854 | ocfs2_truncate_log_shutdown(osb); | |
1855 | ||
1856 | /* This will disable recovery and flush any recovery work. */ | |
1857 | ocfs2_recovery_exit(osb); | |
1858 | ||
1859 | ocfs2_journal_shutdown(osb); | |
1860 | ||
1861 | ocfs2_sync_blockdev(sb); | |
1862 | ||
1863 | /* No cluster connection means we've failed during mount, so skip | |
1864 | * all the steps which depended on that to complete. */ | |
1865 | if (osb->cconn) { | |
1866 | tmp = ocfs2_super_lock(osb, 1); | |
1867 | if (tmp < 0) { | |
1868 | mlog_errno(tmp); | |
1869 | return; | |
1870 | } | |
1871 | } | |
1872 | ||
1873 | if (osb->slot_num != OCFS2_INVALID_SLOT) | |
1874 | ocfs2_put_slot(osb); | |
1875 | ||
1876 | if (osb->cconn) | |
1877 | ocfs2_super_unlock(osb, 1); | |
1878 | ||
1879 | ocfs2_release_system_inodes(osb); | |
1880 | ||
1881 | /* | |
1882 | * If we're dismounting due to mount error, mount.ocfs2 will clean | |
1883 | * up heartbeat. If we're a local mount, there is no heartbeat. | |
1884 | * If we failed before we got a uuid_str yet, we can't stop | |
1885 | * heartbeat. Otherwise, do it. | |
1886 | */ | |
1887 | if (!mnt_err && !ocfs2_mount_local(osb) && osb->uuid_str) | |
1888 | hangup_needed = 1; | |
1889 | ||
1890 | if (osb->cconn) | |
1891 | ocfs2_dlm_shutdown(osb, hangup_needed); | |
1892 | ||
1893 | ocfs2_blockcheck_stats_debugfs_remove(&osb->osb_ecc_stats); | |
1894 | debugfs_remove(osb->osb_debug_root); | |
1895 | ||
1896 | if (hangup_needed) | |
1897 | ocfs2_cluster_hangup(osb->uuid_str, strlen(osb->uuid_str)); | |
1898 | ||
1899 | atomic_set(&osb->vol_state, VOLUME_DISMOUNTED); | |
1900 | ||
1901 | if (ocfs2_mount_local(osb)) | |
1902 | snprintf(nodestr, sizeof(nodestr), "local"); | |
1903 | else | |
1904 | snprintf(nodestr, sizeof(nodestr), "%u", osb->node_num); | |
1905 | ||
1906 | printk(KERN_INFO "ocfs2: Unmounting device (%s) on (node %s)\n", | |
1907 | osb->dev_str, nodestr); | |
1908 | ||
1909 | ocfs2_delete_osb(osb); | |
1910 | kfree(osb); | |
1911 | sb->s_dev = 0; | |
1912 | sb->s_fs_info = NULL; | |
1913 | } | |
1914 | ||
1915 | static int ocfs2_setup_osb_uuid(struct ocfs2_super *osb, const unsigned char *uuid, | |
1916 | unsigned uuid_bytes) | |
1917 | { | |
1918 | int i, ret; | |
1919 | char *ptr; | |
1920 | ||
1921 | BUG_ON(uuid_bytes != OCFS2_VOL_UUID_LEN); | |
1922 | ||
1923 | osb->uuid_str = kzalloc(OCFS2_VOL_UUID_LEN * 2 + 1, GFP_KERNEL); | |
1924 | if (osb->uuid_str == NULL) | |
1925 | return -ENOMEM; | |
1926 | ||
1927 | for (i = 0, ptr = osb->uuid_str; i < OCFS2_VOL_UUID_LEN; i++) { | |
1928 | /* print with null */ | |
1929 | ret = snprintf(ptr, 3, "%02X", uuid[i]); | |
1930 | if (ret != 2) /* drop super cleans up */ | |
1931 | return -EINVAL; | |
1932 | /* then only advance past the last char */ | |
1933 | ptr += 2; | |
1934 | } | |
1935 | ||
1936 | return 0; | |
1937 | } | |
1938 | ||
1939 | static int ocfs2_initialize_super(struct super_block *sb, | |
1940 | struct buffer_head *bh, | |
1941 | int sector_size, | |
1942 | struct ocfs2_blockcheck_stats *stats) | |
1943 | { | |
1944 | int status; | |
1945 | int i, cbits, bbits; | |
1946 | struct ocfs2_dinode *di = (struct ocfs2_dinode *)bh->b_data; | |
1947 | struct inode *inode = NULL; | |
1948 | struct ocfs2_journal *journal; | |
1949 | __le32 uuid_net_key; | |
1950 | struct ocfs2_super *osb; | |
1951 | ||
1952 | mlog_entry_void(); | |
1953 | ||
1954 | osb = kzalloc(sizeof(struct ocfs2_super), GFP_KERNEL); | |
1955 | if (!osb) { | |
1956 | status = -ENOMEM; | |
1957 | mlog_errno(status); | |
1958 | goto bail; | |
1959 | } | |
1960 | ||
1961 | sb->s_fs_info = osb; | |
1962 | sb->s_op = &ocfs2_sops; | |
1963 | sb->s_export_op = &ocfs2_export_ops; | |
1964 | sb->s_qcop = &ocfs2_quotactl_ops; | |
1965 | sb->dq_op = &ocfs2_quota_operations; | |
1966 | sb->s_xattr = ocfs2_xattr_handlers; | |
1967 | sb->s_time_gran = 1; | |
1968 | sb->s_flags |= MS_NOATIME; | |
1969 | /* this is needed to support O_LARGEFILE */ | |
1970 | cbits = le32_to_cpu(di->id2.i_super.s_clustersize_bits); | |
1971 | bbits = le32_to_cpu(di->id2.i_super.s_blocksize_bits); | |
1972 | sb->s_maxbytes = ocfs2_max_file_offset(bbits, cbits); | |
1973 | ||
1974 | osb->osb_dx_mask = (1 << (cbits - bbits)) - 1; | |
1975 | ||
1976 | for (i = 0; i < 3; i++) | |
1977 | osb->osb_dx_seed[i] = le32_to_cpu(di->id2.i_super.s_dx_seed[i]); | |
1978 | osb->osb_dx_seed[3] = le32_to_cpu(di->id2.i_super.s_uuid_hash); | |
1979 | ||
1980 | osb->sb = sb; | |
1981 | /* Save off for ocfs2_rw_direct */ | |
1982 | osb->s_sectsize_bits = blksize_bits(sector_size); | |
1983 | BUG_ON(!osb->s_sectsize_bits); | |
1984 | ||
1985 | spin_lock_init(&osb->dc_task_lock); | |
1986 | init_waitqueue_head(&osb->dc_event); | |
1987 | osb->dc_work_sequence = 0; | |
1988 | osb->dc_wake_sequence = 0; | |
1989 | INIT_LIST_HEAD(&osb->blocked_lock_list); | |
1990 | osb->blocked_lock_count = 0; | |
1991 | spin_lock_init(&osb->osb_lock); | |
1992 | spin_lock_init(&osb->osb_xattr_lock); | |
1993 | ocfs2_init_inode_steal_slot(osb); | |
1994 | ||
1995 | atomic_set(&osb->alloc_stats.moves, 0); | |
1996 | atomic_set(&osb->alloc_stats.local_data, 0); | |
1997 | atomic_set(&osb->alloc_stats.bitmap_data, 0); | |
1998 | atomic_set(&osb->alloc_stats.bg_allocs, 0); | |
1999 | atomic_set(&osb->alloc_stats.bg_extends, 0); | |
2000 | ||
2001 | /* Copy the blockcheck stats from the superblock probe */ | |
2002 | osb->osb_ecc_stats = *stats; | |
2003 | ||
2004 | ocfs2_init_node_maps(osb); | |
2005 | ||
2006 | snprintf(osb->dev_str, sizeof(osb->dev_str), "%u,%u", | |
2007 | MAJOR(osb->sb->s_dev), MINOR(osb->sb->s_dev)); | |
2008 | ||
2009 | ocfs2_orphan_scan_init(osb); | |
2010 | ||
2011 | status = ocfs2_recovery_init(osb); | |
2012 | if (status) { | |
2013 | mlog(ML_ERROR, "Unable to initialize recovery state\n"); | |
2014 | mlog_errno(status); | |
2015 | goto bail; | |
2016 | } | |
2017 | ||
2018 | init_waitqueue_head(&osb->checkpoint_event); | |
2019 | atomic_set(&osb->needs_checkpoint, 0); | |
2020 | ||
2021 | osb->s_atime_quantum = OCFS2_DEFAULT_ATIME_QUANTUM; | |
2022 | ||
2023 | osb->slot_num = OCFS2_INVALID_SLOT; | |
2024 | ||
2025 | osb->s_xattr_inline_size = le16_to_cpu( | |
2026 | di->id2.i_super.s_xattr_inline_size); | |
2027 | ||
2028 | osb->local_alloc_state = OCFS2_LA_UNUSED; | |
2029 | osb->local_alloc_bh = NULL; | |
2030 | INIT_DELAYED_WORK(&osb->la_enable_wq, ocfs2_la_enable_worker); | |
2031 | ||
2032 | init_waitqueue_head(&osb->osb_mount_event); | |
2033 | ||
2034 | osb->vol_label = kmalloc(OCFS2_MAX_VOL_LABEL_LEN, GFP_KERNEL); | |
2035 | if (!osb->vol_label) { | |
2036 | mlog(ML_ERROR, "unable to alloc vol label\n"); | |
2037 | status = -ENOMEM; | |
2038 | goto bail; | |
2039 | } | |
2040 | ||
2041 | osb->max_slots = le16_to_cpu(di->id2.i_super.s_max_slots); | |
2042 | if (osb->max_slots > OCFS2_MAX_SLOTS || osb->max_slots == 0) { | |
2043 | mlog(ML_ERROR, "Invalid number of node slots (%u)\n", | |
2044 | osb->max_slots); | |
2045 | status = -EINVAL; | |
2046 | goto bail; | |
2047 | } | |
2048 | mlog(0, "max_slots for this device: %u\n", osb->max_slots); | |
2049 | ||
2050 | osb->slot_recovery_generations = | |
2051 | kcalloc(osb->max_slots, sizeof(*osb->slot_recovery_generations), | |
2052 | GFP_KERNEL); | |
2053 | if (!osb->slot_recovery_generations) { | |
2054 | status = -ENOMEM; | |
2055 | mlog_errno(status); | |
2056 | goto bail; | |
2057 | } | |
2058 | ||
2059 | init_waitqueue_head(&osb->osb_wipe_event); | |
2060 | osb->osb_orphan_wipes = kcalloc(osb->max_slots, | |
2061 | sizeof(*osb->osb_orphan_wipes), | |
2062 | GFP_KERNEL); | |
2063 | if (!osb->osb_orphan_wipes) { | |
2064 | status = -ENOMEM; | |
2065 | mlog_errno(status); | |
2066 | goto bail; | |
2067 | } | |
2068 | ||
2069 | osb->s_feature_compat = | |
2070 | le32_to_cpu(OCFS2_RAW_SB(di)->s_feature_compat); | |
2071 | osb->s_feature_ro_compat = | |
2072 | le32_to_cpu(OCFS2_RAW_SB(di)->s_feature_ro_compat); | |
2073 | osb->s_feature_incompat = | |
2074 | le32_to_cpu(OCFS2_RAW_SB(di)->s_feature_incompat); | |
2075 | ||
2076 | if ((i = OCFS2_HAS_INCOMPAT_FEATURE(osb->sb, ~OCFS2_FEATURE_INCOMPAT_SUPP))) { | |
2077 | mlog(ML_ERROR, "couldn't mount because of unsupported " | |
2078 | "optional features (%x).\n", i); | |
2079 | status = -EINVAL; | |
2080 | goto bail; | |
2081 | } | |
2082 | if (!(osb->sb->s_flags & MS_RDONLY) && | |
2083 | (i = OCFS2_HAS_RO_COMPAT_FEATURE(osb->sb, ~OCFS2_FEATURE_RO_COMPAT_SUPP))) { | |
2084 | mlog(ML_ERROR, "couldn't mount RDWR because of " | |
2085 | "unsupported optional features (%x).\n", i); | |
2086 | status = -EINVAL; | |
2087 | goto bail; | |
2088 | } | |
2089 | ||
2090 | if (ocfs2_userspace_stack(osb)) { | |
2091 | memcpy(osb->osb_cluster_stack, | |
2092 | OCFS2_RAW_SB(di)->s_cluster_info.ci_stack, | |
2093 | OCFS2_STACK_LABEL_LEN); | |
2094 | osb->osb_cluster_stack[OCFS2_STACK_LABEL_LEN] = '\0'; | |
2095 | if (strlen(osb->osb_cluster_stack) != OCFS2_STACK_LABEL_LEN) { | |
2096 | mlog(ML_ERROR, | |
2097 | "couldn't mount because of an invalid " | |
2098 | "cluster stack label (%s) \n", | |
2099 | osb->osb_cluster_stack); | |
2100 | status = -EINVAL; | |
2101 | goto bail; | |
2102 | } | |
2103 | } else { | |
2104 | /* The empty string is identical with classic tools that | |
2105 | * don't know about s_cluster_info. */ | |
2106 | osb->osb_cluster_stack[0] = '\0'; | |
2107 | } | |
2108 | ||
2109 | get_random_bytes(&osb->s_next_generation, sizeof(u32)); | |
2110 | ||
2111 | /* FIXME | |
2112 | * This should be done in ocfs2_journal_init(), but unknown | |
2113 | * ordering issues will cause the filesystem to crash. | |
2114 | * If anyone wants to figure out what part of the code | |
2115 | * refers to osb->journal before ocfs2_journal_init() is run, | |
2116 | * be my guest. | |
2117 | */ | |
2118 | /* initialize our journal structure */ | |
2119 | ||
2120 | journal = kzalloc(sizeof(struct ocfs2_journal), GFP_KERNEL); | |
2121 | if (!journal) { | |
2122 | mlog(ML_ERROR, "unable to alloc journal\n"); | |
2123 | status = -ENOMEM; | |
2124 | goto bail; | |
2125 | } | |
2126 | osb->journal = journal; | |
2127 | journal->j_osb = osb; | |
2128 | ||
2129 | atomic_set(&journal->j_num_trans, 0); | |
2130 | init_rwsem(&journal->j_trans_barrier); | |
2131 | init_waitqueue_head(&journal->j_checkpointed); | |
2132 | spin_lock_init(&journal->j_lock); | |
2133 | journal->j_trans_id = (unsigned long) 1; | |
2134 | INIT_LIST_HEAD(&journal->j_la_cleanups); | |
2135 | INIT_WORK(&journal->j_recovery_work, ocfs2_complete_recovery); | |
2136 | journal->j_state = OCFS2_JOURNAL_FREE; | |
2137 | ||
2138 | INIT_WORK(&osb->dentry_lock_work, ocfs2_drop_dl_inodes); | |
2139 | osb->dentry_lock_list = NULL; | |
2140 | ||
2141 | /* get some pseudo constants for clustersize bits */ | |
2142 | osb->s_clustersize_bits = | |
2143 | le32_to_cpu(di->id2.i_super.s_clustersize_bits); | |
2144 | osb->s_clustersize = 1 << osb->s_clustersize_bits; | |
2145 | mlog(0, "clusterbits=%d\n", osb->s_clustersize_bits); | |
2146 | ||
2147 | if (osb->s_clustersize < OCFS2_MIN_CLUSTERSIZE || | |
2148 | osb->s_clustersize > OCFS2_MAX_CLUSTERSIZE) { | |
2149 | mlog(ML_ERROR, "Volume has invalid cluster size (%d)\n", | |
2150 | osb->s_clustersize); | |
2151 | status = -EINVAL; | |
2152 | goto bail; | |
2153 | } | |
2154 | ||
2155 | if (ocfs2_clusters_to_blocks(osb->sb, le32_to_cpu(di->i_clusters) - 1) | |
2156 | > (u32)~0UL) { | |
2157 | mlog(ML_ERROR, "Volume might try to write to blocks beyond " | |
2158 | "what jbd can address in 32 bits.\n"); | |
2159 | status = -EINVAL; | |
2160 | goto bail; | |
2161 | } | |
2162 | ||
2163 | if (ocfs2_setup_osb_uuid(osb, di->id2.i_super.s_uuid, | |
2164 | sizeof(di->id2.i_super.s_uuid))) { | |
2165 | mlog(ML_ERROR, "Out of memory trying to setup our uuid.\n"); | |
2166 | status = -ENOMEM; | |
2167 | goto bail; | |
2168 | } | |
2169 | ||
2170 | memcpy(&uuid_net_key, di->id2.i_super.s_uuid, sizeof(uuid_net_key)); | |
2171 | ||
2172 | strncpy(osb->vol_label, di->id2.i_super.s_label, 63); | |
2173 | osb->vol_label[63] = '\0'; | |
2174 | osb->root_blkno = le64_to_cpu(di->id2.i_super.s_root_blkno); | |
2175 | osb->system_dir_blkno = le64_to_cpu(di->id2.i_super.s_system_dir_blkno); | |
2176 | osb->first_cluster_group_blkno = | |
2177 | le64_to_cpu(di->id2.i_super.s_first_cluster_group); | |
2178 | osb->fs_generation = le32_to_cpu(di->i_fs_generation); | |
2179 | osb->uuid_hash = le32_to_cpu(di->id2.i_super.s_uuid_hash); | |
2180 | mlog(0, "vol_label: %s\n", osb->vol_label); | |
2181 | mlog(0, "uuid: %s\n", osb->uuid_str); | |
2182 | mlog(0, "root_blkno=%llu, system_dir_blkno=%llu\n", | |
2183 | (unsigned long long)osb->root_blkno, | |
2184 | (unsigned long long)osb->system_dir_blkno); | |
2185 | ||
2186 | osb->osb_dlm_debug = ocfs2_new_dlm_debug(); | |
2187 | if (!osb->osb_dlm_debug) { | |
2188 | status = -ENOMEM; | |
2189 | mlog_errno(status); | |
2190 | goto bail; | |
2191 | } | |
2192 | ||
2193 | atomic_set(&osb->vol_state, VOLUME_INIT); | |
2194 | ||
2195 | /* load root, system_dir, and all global system inodes */ | |
2196 | status = ocfs2_init_global_system_inodes(osb); | |
2197 | if (status < 0) { | |
2198 | mlog_errno(status); | |
2199 | goto bail; | |
2200 | } | |
2201 | ||
2202 | /* | |
2203 | * global bitmap | |
2204 | */ | |
2205 | inode = ocfs2_get_system_file_inode(osb, GLOBAL_BITMAP_SYSTEM_INODE, | |
2206 | OCFS2_INVALID_SLOT); | |
2207 | if (!inode) { | |
2208 | status = -EINVAL; | |
2209 | mlog_errno(status); | |
2210 | goto bail; | |
2211 | } | |
2212 | ||
2213 | osb->bitmap_blkno = OCFS2_I(inode)->ip_blkno; | |
2214 | iput(inode); | |
2215 | ||
2216 | osb->bitmap_cpg = ocfs2_group_bitmap_size(sb) * 8; | |
2217 | ||
2218 | status = ocfs2_init_slot_info(osb); | |
2219 | if (status < 0) { | |
2220 | mlog_errno(status); | |
2221 | goto bail; | |
2222 | } | |
2223 | ||
2224 | bail: | |
2225 | mlog_exit(status); | |
2226 | return status; | |
2227 | } | |
2228 | ||
2229 | /* | |
2230 | * will return: -EAGAIN if it is ok to keep searching for superblocks | |
2231 | * -EINVAL if there is a bad superblock | |
2232 | * 0 on success | |
2233 | */ | |
2234 | static int ocfs2_verify_volume(struct ocfs2_dinode *di, | |
2235 | struct buffer_head *bh, | |
2236 | u32 blksz, | |
2237 | struct ocfs2_blockcheck_stats *stats) | |
2238 | { | |
2239 | int status = -EAGAIN; | |
2240 | ||
2241 | mlog_entry_void(); | |
2242 | ||
2243 | if (memcmp(di->i_signature, OCFS2_SUPER_BLOCK_SIGNATURE, | |
2244 | strlen(OCFS2_SUPER_BLOCK_SIGNATURE)) == 0) { | |
2245 | /* We have to do a raw check of the feature here */ | |
2246 | if (le32_to_cpu(di->id2.i_super.s_feature_incompat) & | |
2247 | OCFS2_FEATURE_INCOMPAT_META_ECC) { | |
2248 | status = ocfs2_block_check_validate(bh->b_data, | |
2249 | bh->b_size, | |
2250 | &di->i_check, | |
2251 | stats); | |
2252 | if (status) | |
2253 | goto out; | |
2254 | } | |
2255 | status = -EINVAL; | |
2256 | if ((1 << le32_to_cpu(di->id2.i_super.s_blocksize_bits)) != blksz) { | |
2257 | mlog(ML_ERROR, "found superblock with incorrect block " | |
2258 | "size: found %u, should be %u\n", | |
2259 | 1 << le32_to_cpu(di->id2.i_super.s_blocksize_bits), | |
2260 | blksz); | |
2261 | } else if (le16_to_cpu(di->id2.i_super.s_major_rev_level) != | |
2262 | OCFS2_MAJOR_REV_LEVEL || | |
2263 | le16_to_cpu(di->id2.i_super.s_minor_rev_level) != | |
2264 | OCFS2_MINOR_REV_LEVEL) { | |
2265 | mlog(ML_ERROR, "found superblock with bad version: " | |
2266 | "found %u.%u, should be %u.%u\n", | |
2267 | le16_to_cpu(di->id2.i_super.s_major_rev_level), | |
2268 | le16_to_cpu(di->id2.i_super.s_minor_rev_level), | |
2269 | OCFS2_MAJOR_REV_LEVEL, | |
2270 | OCFS2_MINOR_REV_LEVEL); | |
2271 | } else if (bh->b_blocknr != le64_to_cpu(di->i_blkno)) { | |
2272 | mlog(ML_ERROR, "bad block number on superblock: " | |
2273 | "found %llu, should be %llu\n", | |
2274 | (unsigned long long)le64_to_cpu(di->i_blkno), | |
2275 | (unsigned long long)bh->b_blocknr); | |
2276 | } else if (le32_to_cpu(di->id2.i_super.s_clustersize_bits) < 12 || | |
2277 | le32_to_cpu(di->id2.i_super.s_clustersize_bits) > 20) { | |
2278 | mlog(ML_ERROR, "bad cluster size found: %u\n", | |
2279 | 1 << le32_to_cpu(di->id2.i_super.s_clustersize_bits)); | |
2280 | } else if (!le64_to_cpu(di->id2.i_super.s_root_blkno)) { | |
2281 | mlog(ML_ERROR, "bad root_blkno: 0\n"); | |
2282 | } else if (!le64_to_cpu(di->id2.i_super.s_system_dir_blkno)) { | |
2283 | mlog(ML_ERROR, "bad system_dir_blkno: 0\n"); | |
2284 | } else if (le16_to_cpu(di->id2.i_super.s_max_slots) > OCFS2_MAX_SLOTS) { | |
2285 | mlog(ML_ERROR, | |
2286 | "Superblock slots found greater than file system " | |
2287 | "maximum: found %u, max %u\n", | |
2288 | le16_to_cpu(di->id2.i_super.s_max_slots), | |
2289 | OCFS2_MAX_SLOTS); | |
2290 | } else { | |
2291 | /* found it! */ | |
2292 | status = 0; | |
2293 | } | |
2294 | } | |
2295 | ||
2296 | out: | |
2297 | mlog_exit(status); | |
2298 | return status; | |
2299 | } | |
2300 | ||
2301 | static int ocfs2_check_volume(struct ocfs2_super *osb) | |
2302 | { | |
2303 | int status; | |
2304 | int dirty; | |
2305 | int local; | |
2306 | struct ocfs2_dinode *local_alloc = NULL; /* only used if we | |
2307 | * recover | |
2308 | * ourselves. */ | |
2309 | ||
2310 | mlog_entry_void(); | |
2311 | ||
2312 | /* Init our journal object. */ | |
2313 | status = ocfs2_journal_init(osb->journal, &dirty); | |
2314 | if (status < 0) { | |
2315 | mlog(ML_ERROR, "Could not initialize journal!\n"); | |
2316 | goto finally; | |
2317 | } | |
2318 | ||
2319 | /* If the journal was unmounted cleanly then we don't want to | |
2320 | * recover anything. Otherwise, journal_load will do that | |
2321 | * dirty work for us :) */ | |
2322 | if (!dirty) { | |
2323 | status = ocfs2_journal_wipe(osb->journal, 0); | |
2324 | if (status < 0) { | |
2325 | mlog_errno(status); | |
2326 | goto finally; | |
2327 | } | |
2328 | } else { | |
2329 | mlog(ML_NOTICE, "File system was not unmounted cleanly, " | |
2330 | "recovering volume.\n"); | |
2331 | } | |
2332 | ||
2333 | local = ocfs2_mount_local(osb); | |
2334 | ||
2335 | /* will play back anything left in the journal. */ | |
2336 | status = ocfs2_journal_load(osb->journal, local, dirty); | |
2337 | if (status < 0) { | |
2338 | mlog(ML_ERROR, "ocfs2 journal load failed! %d\n", status); | |
2339 | goto finally; | |
2340 | } | |
2341 | ||
2342 | if (dirty) { | |
2343 | /* recover my local alloc if we didn't unmount cleanly. */ | |
2344 | status = ocfs2_begin_local_alloc_recovery(osb, | |
2345 | osb->slot_num, | |
2346 | &local_alloc); | |
2347 | if (status < 0) { | |
2348 | mlog_errno(status); | |
2349 | goto finally; | |
2350 | } | |
2351 | /* we complete the recovery process after we've marked | |
2352 | * ourselves as mounted. */ | |
2353 | } | |
2354 | ||
2355 | mlog(0, "Journal loaded.\n"); | |
2356 | ||
2357 | status = ocfs2_load_local_alloc(osb); | |
2358 | if (status < 0) { | |
2359 | mlog_errno(status); | |
2360 | goto finally; | |
2361 | } | |
2362 | ||
2363 | if (dirty) { | |
2364 | /* Recovery will be completed after we've mounted the | |
2365 | * rest of the volume. */ | |
2366 | osb->dirty = 1; | |
2367 | osb->local_alloc_copy = local_alloc; | |
2368 | local_alloc = NULL; | |
2369 | } | |
2370 | ||
2371 | /* go through each journal, trylock it and if you get the | |
2372 | * lock, and it's marked as dirty, set the bit in the recover | |
2373 | * map and launch a recovery thread for it. */ | |
2374 | status = ocfs2_mark_dead_nodes(osb); | |
2375 | if (status < 0) { | |
2376 | mlog_errno(status); | |
2377 | goto finally; | |
2378 | } | |
2379 | ||
2380 | status = ocfs2_compute_replay_slots(osb); | |
2381 | if (status < 0) | |
2382 | mlog_errno(status); | |
2383 | ||
2384 | finally: | |
2385 | if (local_alloc) | |
2386 | kfree(local_alloc); | |
2387 | ||
2388 | mlog_exit(status); | |
2389 | return status; | |
2390 | } | |
2391 | ||
2392 | /* | |
2393 | * The routine gets called from dismount or close whenever a dismount on | |
2394 | * volume is requested and the osb open count becomes 1. | |
2395 | * It will remove the osb from the global list and also free up all the | |
2396 | * initialized resources and fileobject. | |
2397 | */ | |
2398 | static void ocfs2_delete_osb(struct ocfs2_super *osb) | |
2399 | { | |
2400 | mlog_entry_void(); | |
2401 | ||
2402 | /* This function assumes that the caller has the main osb resource */ | |
2403 | ||
2404 | ocfs2_free_slot_info(osb); | |
2405 | ||
2406 | kfree(osb->osb_orphan_wipes); | |
2407 | kfree(osb->slot_recovery_generations); | |
2408 | /* FIXME | |
2409 | * This belongs in journal shutdown, but because we have to | |
2410 | * allocate osb->journal at the start of ocfs2_initalize_osb(), | |
2411 | * we free it here. | |
2412 | */ | |
2413 | kfree(osb->journal); | |
2414 | if (osb->local_alloc_copy) | |
2415 | kfree(osb->local_alloc_copy); | |
2416 | kfree(osb->uuid_str); | |
2417 | ocfs2_put_dlm_debug(osb->osb_dlm_debug); | |
2418 | memset(osb, 0, sizeof(struct ocfs2_super)); | |
2419 | ||
2420 | mlog_exit_void(); | |
2421 | } | |
2422 | ||
2423 | /* Put OCFS2 into a readonly state, or (if the user specifies it), | |
2424 | * panic(). We do not support continue-on-error operation. */ | |
2425 | static void ocfs2_handle_error(struct super_block *sb) | |
2426 | { | |
2427 | struct ocfs2_super *osb = OCFS2_SB(sb); | |
2428 | ||
2429 | if (osb->s_mount_opt & OCFS2_MOUNT_ERRORS_PANIC) | |
2430 | panic("OCFS2: (device %s): panic forced after error\n", | |
2431 | sb->s_id); | |
2432 | ||
2433 | ocfs2_set_osb_flag(osb, OCFS2_OSB_ERROR_FS); | |
2434 | ||
2435 | if (sb->s_flags & MS_RDONLY && | |
2436 | (ocfs2_is_soft_readonly(osb) || | |
2437 | ocfs2_is_hard_readonly(osb))) | |
2438 | return; | |
2439 | ||
2440 | printk(KERN_CRIT "File system is now read-only due to the potential " | |
2441 | "of on-disk corruption. Please run fsck.ocfs2 once the file " | |
2442 | "system is unmounted.\n"); | |
2443 | sb->s_flags |= MS_RDONLY; | |
2444 | ocfs2_set_ro_flag(osb, 0); | |
2445 | } | |
2446 | ||
2447 | static char error_buf[1024]; | |
2448 | ||
2449 | void __ocfs2_error(struct super_block *sb, | |
2450 | const char *function, | |
2451 | const char *fmt, ...) | |
2452 | { | |
2453 | va_list args; | |
2454 | ||
2455 | va_start(args, fmt); | |
2456 | vsnprintf(error_buf, sizeof(error_buf), fmt, args); | |
2457 | va_end(args); | |
2458 | ||
2459 | /* Not using mlog here because we want to show the actual | |
2460 | * function the error came from. */ | |
2461 | printk(KERN_CRIT "OCFS2: ERROR (device %s): %s: %s\n", | |
2462 | sb->s_id, function, error_buf); | |
2463 | ||
2464 | ocfs2_handle_error(sb); | |
2465 | } | |
2466 | ||
2467 | /* Handle critical errors. This is intentionally more drastic than | |
2468 | * ocfs2_handle_error, so we only use for things like journal errors, | |
2469 | * etc. */ | |
2470 | void __ocfs2_abort(struct super_block* sb, | |
2471 | const char *function, | |
2472 | const char *fmt, ...) | |
2473 | { | |
2474 | va_list args; | |
2475 | ||
2476 | va_start(args, fmt); | |
2477 | vsnprintf(error_buf, sizeof(error_buf), fmt, args); | |
2478 | va_end(args); | |
2479 | ||
2480 | printk(KERN_CRIT "OCFS2: abort (device %s): %s: %s\n", | |
2481 | sb->s_id, function, error_buf); | |
2482 | ||
2483 | /* We don't have the cluster support yet to go straight to | |
2484 | * hard readonly in here. Until then, we want to keep | |
2485 | * ocfs2_abort() so that we can at least mark critical | |
2486 | * errors. | |
2487 | * | |
2488 | * TODO: This should abort the journal and alert other nodes | |
2489 | * that our slot needs recovery. */ | |
2490 | ||
2491 | /* Force a panic(). This stinks, but it's better than letting | |
2492 | * things continue without having a proper hard readonly | |
2493 | * here. */ | |
2494 | OCFS2_SB(sb)->s_mount_opt |= OCFS2_MOUNT_ERRORS_PANIC; | |
2495 | ocfs2_handle_error(sb); | |
2496 | } | |
2497 | ||
2498 | module_init(ocfs2_init); | |
2499 | module_exit(ocfs2_exit); |