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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> | |
ccd979bd MF |
31 | #include <linux/init.h> |
32 | #include <linux/random.h> | |
33 | #include <linux/statfs.h> | |
34 | #include <linux/moduleparam.h> | |
35 | #include <linux/blkdev.h> | |
36 | #include <linux/socket.h> | |
37 | #include <linux/inet.h> | |
38 | #include <linux/parser.h> | |
39 | #include <linux/crc32.h> | |
40 | #include <linux/debugfs.h> | |
d550071c | 41 | #include <linux/mount.h> |
6953b4c0 | 42 | #include <linux/seq_file.h> |
19ece546 | 43 | #include <linux/quotaops.h> |
337eb00a | 44 | #include <linux/smp_lock.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" | |
d030cc97 | 55 | #include "blockcheck.h" |
ccd979bd MF |
56 | #include "dlmglue.h" |
57 | #include "export.h" | |
58 | #include "extent_map.h" | |
59 | #include "heartbeat.h" | |
60 | #include "inode.h" | |
61 | #include "journal.h" | |
62 | #include "localalloc.h" | |
63 | #include "namei.h" | |
64 | #include "slot_map.h" | |
65 | #include "super.h" | |
66 | #include "sysfile.h" | |
67 | #include "uptodate.h" | |
68 | #include "ver.h" | |
cf1d6c76 | 69 | #include "xattr.h" |
9e33d69f | 70 | #include "quota.h" |
374a263e | 71 | #include "refcounttree.h" |
b89c5428 | 72 | #include "suballoc.h" |
ccd979bd MF |
73 | |
74 | #include "buffer_head_io.h" | |
75 | ||
e18b890b | 76 | static struct kmem_cache *ocfs2_inode_cachep = NULL; |
9e33d69f JK |
77 | struct kmem_cache *ocfs2_dquot_cachep; |
78 | struct kmem_cache *ocfs2_qf_chunk_cachep; | |
ccd979bd | 79 | |
ccd979bd MF |
80 | /* OCFS2 needs to schedule several differnt types of work which |
81 | * require cluster locking, disk I/O, recovery waits, etc. Since these | |
82 | * types of work tend to be heavy we avoid using the kernel events | |
83 | * workqueue and schedule on our own. */ | |
84 | struct workqueue_struct *ocfs2_wq = NULL; | |
85 | ||
86 | static struct dentry *ocfs2_debugfs_root = NULL; | |
87 | ||
88 | MODULE_AUTHOR("Oracle"); | |
89 | MODULE_LICENSE("GPL"); | |
90 | ||
c0123ade TY |
91 | struct mount_options |
92 | { | |
d147b3d6 | 93 | unsigned long commit_interval; |
c0123ade TY |
94 | unsigned long mount_opt; |
95 | unsigned int atime_quantum; | |
96 | signed short slot; | |
2fbe8d1e | 97 | unsigned int localalloc_opt; |
d02f00cc | 98 | unsigned int resv_level; |
b61817e1 | 99 | char cluster_stack[OCFS2_STACK_LABEL_LEN + 1]; |
c0123ade TY |
100 | }; |
101 | ||
ccd979bd | 102 | static int ocfs2_parse_options(struct super_block *sb, char *options, |
c0123ade | 103 | struct mount_options *mopt, |
baf4661a | 104 | int is_remount); |
5297aad8 JK |
105 | static int ocfs2_check_set_options(struct super_block *sb, |
106 | struct mount_options *options); | |
d550071c | 107 | static int ocfs2_show_options(struct seq_file *s, struct vfsmount *mnt); |
ccd979bd MF |
108 | static void ocfs2_put_super(struct super_block *sb); |
109 | static int ocfs2_mount_volume(struct super_block *sb); | |
110 | static int ocfs2_remount(struct super_block *sb, int *flags, char *data); | |
111 | static void ocfs2_dismount_volume(struct super_block *sb, int mnt_err); | |
112 | static int ocfs2_initialize_mem_caches(void); | |
113 | static void ocfs2_free_mem_caches(void); | |
114 | static void ocfs2_delete_osb(struct ocfs2_super *osb); | |
115 | ||
726c3342 | 116 | static int ocfs2_statfs(struct dentry *dentry, struct kstatfs *buf); |
ccd979bd MF |
117 | |
118 | static int ocfs2_sync_fs(struct super_block *sb, int wait); | |
119 | ||
120 | static int ocfs2_init_global_system_inodes(struct ocfs2_super *osb); | |
121 | static int ocfs2_init_local_system_inodes(struct ocfs2_super *osb); | |
bddb8eb3 | 122 | static void ocfs2_release_system_inodes(struct ocfs2_super *osb); |
ccd979bd MF |
123 | static int ocfs2_check_volume(struct ocfs2_super *osb); |
124 | static int ocfs2_verify_volume(struct ocfs2_dinode *di, | |
125 | struct buffer_head *bh, | |
73be192b JB |
126 | u32 sectsize, |
127 | struct ocfs2_blockcheck_stats *stats); | |
ccd979bd MF |
128 | static int ocfs2_initialize_super(struct super_block *sb, |
129 | struct buffer_head *bh, | |
73be192b JB |
130 | int sector_size, |
131 | struct ocfs2_blockcheck_stats *stats); | |
ccd979bd MF |
132 | static int ocfs2_get_sector(struct super_block *sb, |
133 | struct buffer_head **bh, | |
134 | int block, | |
135 | int sect_size); | |
ccd979bd MF |
136 | static struct inode *ocfs2_alloc_inode(struct super_block *sb); |
137 | static void ocfs2_destroy_inode(struct inode *inode); | |
19ece546 JK |
138 | static int ocfs2_susp_quotas(struct ocfs2_super *osb, int unsuspend); |
139 | static int ocfs2_enable_quotas(struct ocfs2_super *osb); | |
140 | static void ocfs2_disable_quotas(struct ocfs2_super *osb); | |
ccd979bd | 141 | |
ee9b6d61 | 142 | static const struct super_operations ocfs2_sops = { |
ccd979bd MF |
143 | .statfs = ocfs2_statfs, |
144 | .alloc_inode = ocfs2_alloc_inode, | |
145 | .destroy_inode = ocfs2_destroy_inode, | |
146 | .drop_inode = ocfs2_drop_inode, | |
147 | .clear_inode = ocfs2_clear_inode, | |
148 | .delete_inode = ocfs2_delete_inode, | |
149 | .sync_fs = ocfs2_sync_fs, | |
ccd979bd MF |
150 | .put_super = ocfs2_put_super, |
151 | .remount_fs = ocfs2_remount, | |
d550071c | 152 | .show_options = ocfs2_show_options, |
9e33d69f JK |
153 | .quota_read = ocfs2_quota_read, |
154 | .quota_write = ocfs2_quota_write, | |
ccd979bd MF |
155 | }; |
156 | ||
157 | enum { | |
158 | Opt_barrier, | |
159 | Opt_err_panic, | |
160 | Opt_err_ro, | |
161 | Opt_intr, | |
162 | Opt_nointr, | |
163 | Opt_hb_none, | |
164 | Opt_hb_local, | |
165 | Opt_data_ordered, | |
166 | Opt_data_writeback, | |
7f1a37e3 | 167 | Opt_atime_quantum, |
baf4661a | 168 | Opt_slot, |
d147b3d6 | 169 | Opt_commit, |
2fbe8d1e | 170 | Opt_localalloc, |
53fc622b | 171 | Opt_localflocks, |
b61817e1 | 172 | Opt_stack, |
cf1d6c76 TY |
173 | Opt_user_xattr, |
174 | Opt_nouser_xattr, | |
12462f1d | 175 | Opt_inode64, |
a68979b8 TY |
176 | Opt_acl, |
177 | Opt_noacl, | |
19ece546 JK |
178 | Opt_usrquota, |
179 | Opt_grpquota, | |
d02f00cc | 180 | Opt_resv_level, |
ccd979bd MF |
181 | Opt_err, |
182 | }; | |
183 | ||
a447c093 | 184 | static const match_table_t tokens = { |
ccd979bd MF |
185 | {Opt_barrier, "barrier=%u"}, |
186 | {Opt_err_panic, "errors=panic"}, | |
187 | {Opt_err_ro, "errors=remount-ro"}, | |
188 | {Opt_intr, "intr"}, | |
189 | {Opt_nointr, "nointr"}, | |
190 | {Opt_hb_none, OCFS2_HB_NONE}, | |
191 | {Opt_hb_local, OCFS2_HB_LOCAL}, | |
192 | {Opt_data_ordered, "data=ordered"}, | |
193 | {Opt_data_writeback, "data=writeback"}, | |
7f1a37e3 | 194 | {Opt_atime_quantum, "atime_quantum=%u"}, |
baf4661a | 195 | {Opt_slot, "preferred_slot=%u"}, |
d147b3d6 | 196 | {Opt_commit, "commit=%u"}, |
2fbe8d1e | 197 | {Opt_localalloc, "localalloc=%d"}, |
53fc622b | 198 | {Opt_localflocks, "localflocks"}, |
b61817e1 | 199 | {Opt_stack, "cluster_stack=%s"}, |
cf1d6c76 TY |
200 | {Opt_user_xattr, "user_xattr"}, |
201 | {Opt_nouser_xattr, "nouser_xattr"}, | |
12462f1d | 202 | {Opt_inode64, "inode64"}, |
a68979b8 TY |
203 | {Opt_acl, "acl"}, |
204 | {Opt_noacl, "noacl"}, | |
19ece546 JK |
205 | {Opt_usrquota, "usrquota"}, |
206 | {Opt_grpquota, "grpquota"}, | |
d02f00cc | 207 | {Opt_resv_level, "resv_level=%u"}, |
ccd979bd MF |
208 | {Opt_err, NULL} |
209 | }; | |
210 | ||
50397507 SM |
211 | #ifdef CONFIG_DEBUG_FS |
212 | static int ocfs2_osb_dump(struct ocfs2_super *osb, char *buf, int len) | |
213 | { | |
50397507 SM |
214 | struct ocfs2_cluster_connection *cconn = osb->cconn; |
215 | struct ocfs2_recovery_map *rm = osb->recovery_map; | |
df152c24 SM |
216 | struct ocfs2_orphan_scan *os = &osb->osb_orphan_scan; |
217 | int i, out = 0; | |
50397507 SM |
218 | |
219 | out += snprintf(buf + out, len - out, | |
220 | "%10s => Id: %-s Uuid: %-s Gen: 0x%X Label: %-s\n", | |
221 | "Device", osb->dev_str, osb->uuid_str, | |
222 | osb->fs_generation, osb->vol_label); | |
223 | ||
224 | out += snprintf(buf + out, len - out, | |
225 | "%10s => State: %d Flags: 0x%lX\n", "Volume", | |
226 | atomic_read(&osb->vol_state), osb->osb_flags); | |
227 | ||
228 | out += snprintf(buf + out, len - out, | |
229 | "%10s => Block: %lu Cluster: %d\n", "Sizes", | |
230 | osb->sb->s_blocksize, osb->s_clustersize); | |
231 | ||
232 | out += snprintf(buf + out, len - out, | |
233 | "%10s => Compat: 0x%X Incompat: 0x%X " | |
234 | "ROcompat: 0x%X\n", | |
235 | "Features", osb->s_feature_compat, | |
236 | osb->s_feature_incompat, osb->s_feature_ro_compat); | |
237 | ||
238 | out += snprintf(buf + out, len - out, | |
239 | "%10s => Opts: 0x%lX AtimeQuanta: %u\n", "Mount", | |
240 | osb->s_mount_opt, osb->s_atime_quantum); | |
241 | ||
c3d38840 SM |
242 | if (cconn) { |
243 | out += snprintf(buf + out, len - out, | |
244 | "%10s => Stack: %s Name: %*s " | |
245 | "Version: %d.%d\n", "Cluster", | |
246 | (*osb->osb_cluster_stack == '\0' ? | |
247 | "o2cb" : osb->osb_cluster_stack), | |
248 | cconn->cc_namelen, cconn->cc_name, | |
249 | cconn->cc_version.pv_major, | |
250 | cconn->cc_version.pv_minor); | |
251 | } | |
50397507 SM |
252 | |
253 | spin_lock(&osb->dc_task_lock); | |
254 | out += snprintf(buf + out, len - out, | |
255 | "%10s => Pid: %d Count: %lu WakeSeq: %lu " | |
256 | "WorkSeq: %lu\n", "DownCnvt", | |
c3d38840 SM |
257 | (osb->dc_task ? task_pid_nr(osb->dc_task) : -1), |
258 | osb->blocked_lock_count, osb->dc_wake_sequence, | |
259 | osb->dc_work_sequence); | |
50397507 SM |
260 | spin_unlock(&osb->dc_task_lock); |
261 | ||
262 | spin_lock(&osb->osb_lock); | |
263 | out += snprintf(buf + out, len - out, "%10s => Pid: %d Nodes:", | |
264 | "Recovery", | |
265 | (osb->recovery_thread_task ? | |
266 | task_pid_nr(osb->recovery_thread_task) : -1)); | |
267 | if (rm->rm_used == 0) | |
268 | out += snprintf(buf + out, len - out, " None\n"); | |
269 | else { | |
270 | for (i = 0; i < rm->rm_used; i++) | |
271 | out += snprintf(buf + out, len - out, " %d", | |
272 | rm->rm_entries[i]); | |
273 | out += snprintf(buf + out, len - out, "\n"); | |
274 | } | |
275 | spin_unlock(&osb->osb_lock); | |
276 | ||
277 | out += snprintf(buf + out, len - out, | |
278 | "%10s => Pid: %d Interval: %lu Needs: %d\n", "Commit", | |
c3d38840 SM |
279 | (osb->commit_task ? task_pid_nr(osb->commit_task) : -1), |
280 | osb->osb_commit_interval, | |
50397507 SM |
281 | atomic_read(&osb->needs_checkpoint)); |
282 | ||
283 | out += snprintf(buf + out, len - out, | |
c3d38840 | 284 | "%10s => State: %d TxnId: %lu NumTxns: %d\n", |
50397507 | 285 | "Journal", osb->journal->j_state, |
c3d38840 SM |
286 | osb->journal->j_trans_id, |
287 | atomic_read(&osb->journal->j_num_trans)); | |
50397507 SM |
288 | |
289 | out += snprintf(buf + out, len - out, | |
290 | "%10s => GlobalAllocs: %d LocalAllocs: %d " | |
291 | "SubAllocs: %d LAWinMoves: %d SAExtends: %d\n", | |
292 | "Stats", | |
293 | atomic_read(&osb->alloc_stats.bitmap_data), | |
294 | atomic_read(&osb->alloc_stats.local_data), | |
295 | atomic_read(&osb->alloc_stats.bg_allocs), | |
296 | atomic_read(&osb->alloc_stats.moves), | |
297 | atomic_read(&osb->alloc_stats.bg_extends)); | |
298 | ||
299 | out += snprintf(buf + out, len - out, | |
300 | "%10s => State: %u Descriptor: %llu Size: %u bits " | |
301 | "Default: %u bits\n", | |
302 | "LocalAlloc", osb->local_alloc_state, | |
303 | (unsigned long long)osb->la_last_gd, | |
304 | osb->local_alloc_bits, osb->local_alloc_default_bits); | |
305 | ||
306 | spin_lock(&osb->osb_lock); | |
307 | out += snprintf(buf + out, len - out, | |
b89c5428 TY |
308 | "%10s => InodeSlot: %d StolenInodes: %d, " |
309 | "MetaSlot: %d StolenMeta: %d\n", "Steal", | |
50397507 | 310 | osb->s_inode_steal_slot, |
b89c5428 TY |
311 | atomic_read(&osb->s_num_inodes_stolen), |
312 | osb->s_meta_steal_slot, | |
313 | atomic_read(&osb->s_num_meta_stolen)); | |
50397507 SM |
314 | spin_unlock(&osb->osb_lock); |
315 | ||
df152c24 SM |
316 | out += snprintf(buf + out, len - out, "OrphanScan => "); |
317 | out += snprintf(buf + out, len - out, "Local: %u Global: %u ", | |
318 | os->os_count, os->os_seqno); | |
319 | out += snprintf(buf + out, len - out, " Last Scan: "); | |
320 | if (atomic_read(&os->os_state) == ORPHAN_SCAN_INACTIVE) | |
321 | out += snprintf(buf + out, len - out, "Disabled\n"); | |
322 | else | |
323 | out += snprintf(buf + out, len - out, "%lu seconds ago\n", | |
324 | (get_seconds() - os->os_scantime.tv_sec)); | |
325 | ||
50397507 SM |
326 | out += snprintf(buf + out, len - out, "%10s => %3s %10s\n", |
327 | "Slots", "Num", "RecoGen"); | |
50397507 SM |
328 | for (i = 0; i < osb->max_slots; ++i) { |
329 | out += snprintf(buf + out, len - out, | |
330 | "%10s %c %3d %10d\n", | |
331 | " ", | |
332 | (i == osb->slot_num ? '*' : ' '), | |
333 | i, osb->slot_recovery_generations[i]); | |
334 | } | |
335 | ||
336 | return out; | |
337 | } | |
338 | ||
339 | static int ocfs2_osb_debug_open(struct inode *inode, struct file *file) | |
340 | { | |
341 | struct ocfs2_super *osb = inode->i_private; | |
342 | char *buf = NULL; | |
343 | ||
344 | buf = kmalloc(PAGE_SIZE, GFP_KERNEL); | |
345 | if (!buf) | |
346 | goto bail; | |
347 | ||
348 | i_size_write(inode, ocfs2_osb_dump(osb, buf, PAGE_SIZE)); | |
349 | ||
350 | file->private_data = buf; | |
351 | ||
352 | return 0; | |
353 | bail: | |
354 | return -ENOMEM; | |
355 | } | |
356 | ||
357 | static int ocfs2_debug_release(struct inode *inode, struct file *file) | |
358 | { | |
359 | kfree(file->private_data); | |
360 | return 0; | |
361 | } | |
362 | ||
363 | static ssize_t ocfs2_debug_read(struct file *file, char __user *buf, | |
364 | size_t nbytes, loff_t *ppos) | |
365 | { | |
366 | return simple_read_from_buffer(buf, nbytes, ppos, file->private_data, | |
367 | i_size_read(file->f_mapping->host)); | |
368 | } | |
369 | #else | |
370 | static int ocfs2_osb_debug_open(struct inode *inode, struct file *file) | |
371 | { | |
372 | return 0; | |
373 | } | |
374 | static int ocfs2_debug_release(struct inode *inode, struct file *file) | |
375 | { | |
376 | return 0; | |
377 | } | |
378 | static ssize_t ocfs2_debug_read(struct file *file, char __user *buf, | |
379 | size_t nbytes, loff_t *ppos) | |
380 | { | |
381 | return 0; | |
382 | } | |
383 | #endif /* CONFIG_DEBUG_FS */ | |
384 | ||
828c0950 | 385 | static const struct file_operations ocfs2_osb_debug_fops = { |
50397507 SM |
386 | .open = ocfs2_osb_debug_open, |
387 | .release = ocfs2_debug_release, | |
388 | .read = ocfs2_debug_read, | |
389 | .llseek = generic_file_llseek, | |
390 | }; | |
391 | ||
ccd979bd MF |
392 | static int ocfs2_sync_fs(struct super_block *sb, int wait) |
393 | { | |
bddb8eb3 | 394 | int status; |
ccd979bd MF |
395 | tid_t target; |
396 | struct ocfs2_super *osb = OCFS2_SB(sb); | |
397 | ||
ccd979bd MF |
398 | if (ocfs2_is_hard_readonly(osb)) |
399 | return -EROFS; | |
400 | ||
401 | if (wait) { | |
402 | status = ocfs2_flush_truncate_log(osb); | |
403 | if (status < 0) | |
404 | mlog_errno(status); | |
405 | } else { | |
406 | ocfs2_schedule_truncate_log_flush(osb, 0); | |
407 | } | |
408 | ||
2b4e30fb JB |
409 | if (jbd2_journal_start_commit(OCFS2_SB(sb)->journal->j_journal, |
410 | &target)) { | |
ccd979bd | 411 | if (wait) |
2b4e30fb JB |
412 | jbd2_log_wait_commit(OCFS2_SB(sb)->journal->j_journal, |
413 | target); | |
ccd979bd MF |
414 | } |
415 | return 0; | |
416 | } | |
417 | ||
1a224ad1 JK |
418 | static int ocfs2_need_system_inode(struct ocfs2_super *osb, int ino) |
419 | { | |
420 | if (!OCFS2_HAS_RO_COMPAT_FEATURE(osb->sb, OCFS2_FEATURE_RO_COMPAT_USRQUOTA) | |
421 | && (ino == USER_QUOTA_SYSTEM_INODE | |
422 | || ino == LOCAL_USER_QUOTA_SYSTEM_INODE)) | |
423 | return 0; | |
424 | if (!OCFS2_HAS_RO_COMPAT_FEATURE(osb->sb, OCFS2_FEATURE_RO_COMPAT_GRPQUOTA) | |
425 | && (ino == GROUP_QUOTA_SYSTEM_INODE | |
426 | || ino == LOCAL_GROUP_QUOTA_SYSTEM_INODE)) | |
427 | return 0; | |
428 | return 1; | |
429 | } | |
430 | ||
ccd979bd MF |
431 | static int ocfs2_init_global_system_inodes(struct ocfs2_super *osb) |
432 | { | |
433 | struct inode *new = NULL; | |
434 | int status = 0; | |
435 | int i; | |
436 | ||
437 | mlog_entry_void(); | |
438 | ||
5fa0613e | 439 | new = ocfs2_iget(osb, osb->root_blkno, OCFS2_FI_FLAG_SYSFILE, 0); |
ccd979bd MF |
440 | if (IS_ERR(new)) { |
441 | status = PTR_ERR(new); | |
442 | mlog_errno(status); | |
443 | goto bail; | |
444 | } | |
445 | osb->root_inode = new; | |
446 | ||
5fa0613e | 447 | new = ocfs2_iget(osb, osb->system_dir_blkno, OCFS2_FI_FLAG_SYSFILE, 0); |
ccd979bd MF |
448 | if (IS_ERR(new)) { |
449 | status = PTR_ERR(new); | |
450 | mlog_errno(status); | |
451 | goto bail; | |
452 | } | |
453 | osb->sys_root_inode = new; | |
454 | ||
455 | for (i = OCFS2_FIRST_ONLINE_SYSTEM_INODE; | |
456 | i <= OCFS2_LAST_GLOBAL_SYSTEM_INODE; i++) { | |
1a224ad1 JK |
457 | if (!ocfs2_need_system_inode(osb, i)) |
458 | continue; | |
ccd979bd MF |
459 | new = ocfs2_get_system_file_inode(osb, i, osb->slot_num); |
460 | if (!new) { | |
461 | ocfs2_release_system_inodes(osb); | |
462 | status = -EINVAL; | |
463 | mlog_errno(status); | |
464 | /* FIXME: Should ERROR_RO_FS */ | |
465 | mlog(ML_ERROR, "Unable to load system inode %d, " | |
466 | "possibly corrupt fs?", i); | |
467 | goto bail; | |
468 | } | |
469 | // the array now has one ref, so drop this one | |
470 | iput(new); | |
471 | } | |
472 | ||
473 | bail: | |
474 | mlog_exit(status); | |
475 | return status; | |
476 | } | |
477 | ||
478 | static int ocfs2_init_local_system_inodes(struct ocfs2_super *osb) | |
479 | { | |
480 | struct inode *new = NULL; | |
481 | int status = 0; | |
482 | int i; | |
483 | ||
484 | mlog_entry_void(); | |
485 | ||
486 | for (i = OCFS2_LAST_GLOBAL_SYSTEM_INODE + 1; | |
487 | i < NUM_SYSTEM_INODES; | |
488 | i++) { | |
1a224ad1 JK |
489 | if (!ocfs2_need_system_inode(osb, i)) |
490 | continue; | |
ccd979bd MF |
491 | new = ocfs2_get_system_file_inode(osb, i, osb->slot_num); |
492 | if (!new) { | |
493 | ocfs2_release_system_inodes(osb); | |
494 | status = -EINVAL; | |
495 | mlog(ML_ERROR, "status=%d, sysfile=%d, slot=%d\n", | |
496 | status, i, osb->slot_num); | |
497 | goto bail; | |
498 | } | |
499 | /* the array now has one ref, so drop this one */ | |
500 | iput(new); | |
501 | } | |
502 | ||
503 | bail: | |
504 | mlog_exit(status); | |
505 | return status; | |
506 | } | |
507 | ||
bddb8eb3 | 508 | static void ocfs2_release_system_inodes(struct ocfs2_super *osb) |
ccd979bd | 509 | { |
bddb8eb3 | 510 | int i; |
ccd979bd MF |
511 | struct inode *inode; |
512 | ||
513 | mlog_entry_void(); | |
514 | ||
515 | for (i = 0; i < NUM_SYSTEM_INODES; i++) { | |
516 | inode = osb->system_inodes[i]; | |
517 | if (inode) { | |
518 | iput(inode); | |
519 | osb->system_inodes[i] = NULL; | |
520 | } | |
521 | } | |
522 | ||
523 | inode = osb->sys_root_inode; | |
524 | if (inode) { | |
525 | iput(inode); | |
526 | osb->sys_root_inode = NULL; | |
527 | } | |
528 | ||
529 | inode = osb->root_inode; | |
530 | if (inode) { | |
531 | iput(inode); | |
532 | osb->root_inode = NULL; | |
533 | } | |
534 | ||
bddb8eb3 | 535 | mlog_exit(0); |
ccd979bd MF |
536 | } |
537 | ||
538 | /* We're allocating fs objects, use GFP_NOFS */ | |
539 | static struct inode *ocfs2_alloc_inode(struct super_block *sb) | |
540 | { | |
541 | struct ocfs2_inode_info *oi; | |
542 | ||
e6b4f8da | 543 | oi = kmem_cache_alloc(ocfs2_inode_cachep, GFP_NOFS); |
ccd979bd MF |
544 | if (!oi) |
545 | return NULL; | |
546 | ||
2b4e30fb | 547 | jbd2_journal_init_jbd_inode(&oi->ip_jinode, &oi->vfs_inode); |
ccd979bd MF |
548 | return &oi->vfs_inode; |
549 | } | |
550 | ||
551 | static void ocfs2_destroy_inode(struct inode *inode) | |
552 | { | |
553 | kmem_cache_free(ocfs2_inode_cachep, OCFS2_I(inode)); | |
554 | } | |
555 | ||
5a254031 MF |
556 | static unsigned long long ocfs2_max_file_offset(unsigned int bbits, |
557 | unsigned int cbits) | |
ccd979bd | 558 | { |
5a254031 MF |
559 | unsigned int bytes = 1 << cbits; |
560 | unsigned int trim = bytes; | |
561 | unsigned int bitshift = 32; | |
562 | ||
563 | /* | |
564 | * i_size and all block offsets in ocfs2 are always 64 bits | |
565 | * wide. i_clusters is 32 bits, in cluster-sized units. So on | |
566 | * 64 bit platforms, cluster size will be the limiting factor. | |
ccd979bd MF |
567 | */ |
568 | ||
569 | #if BITS_PER_LONG == 32 | |
90c699a9 | 570 | # if defined(CONFIG_LBDAF) |
2ecd05ae | 571 | BUILD_BUG_ON(sizeof(sector_t) != 8); |
5a254031 MF |
572 | /* |
573 | * We might be limited by page cache size. | |
574 | */ | |
575 | if (bytes > PAGE_CACHE_SIZE) { | |
576 | bytes = PAGE_CACHE_SIZE; | |
577 | trim = 1; | |
578 | /* | |
579 | * Shift by 31 here so that we don't get larger than | |
580 | * MAX_LFS_FILESIZE | |
581 | */ | |
582 | bitshift = 31; | |
583 | } | |
ccd979bd | 584 | # else |
5a254031 MF |
585 | /* |
586 | * We are limited by the size of sector_t. Use block size, as | |
587 | * that's what we expose to the VFS. | |
588 | */ | |
589 | bytes = 1 << bbits; | |
590 | trim = 1; | |
591 | bitshift = 31; | |
ccd979bd MF |
592 | # endif |
593 | #endif | |
594 | ||
5a254031 MF |
595 | /* |
596 | * Trim by a whole cluster when we can actually approach the | |
597 | * on-disk limits. Otherwise we can overflow i_clusters when | |
598 | * an extent start is at the max offset. | |
599 | */ | |
600 | return (((unsigned long long)bytes) << bitshift) - trim; | |
ccd979bd MF |
601 | } |
602 | ||
603 | static int ocfs2_remount(struct super_block *sb, int *flags, char *data) | |
604 | { | |
605 | int incompat_features; | |
606 | int ret = 0; | |
c0123ade | 607 | struct mount_options parsed_options; |
ccd979bd MF |
608 | struct ocfs2_super *osb = OCFS2_SB(sb); |
609 | ||
337eb00a AIB |
610 | lock_kernel(); |
611 | ||
5297aad8 JK |
612 | if (!ocfs2_parse_options(sb, data, &parsed_options, 1) || |
613 | !ocfs2_check_set_options(sb, &parsed_options)) { | |
ccd979bd MF |
614 | ret = -EINVAL; |
615 | goto out; | |
616 | } | |
617 | ||
618 | if ((osb->s_mount_opt & OCFS2_MOUNT_HB_LOCAL) != | |
c0123ade | 619 | (parsed_options.mount_opt & OCFS2_MOUNT_HB_LOCAL)) { |
ccd979bd MF |
620 | ret = -EINVAL; |
621 | mlog(ML_ERROR, "Cannot change heartbeat mode on remount\n"); | |
622 | goto out; | |
623 | } | |
624 | ||
625 | if ((osb->s_mount_opt & OCFS2_MOUNT_DATA_WRITEBACK) != | |
c0123ade | 626 | (parsed_options.mount_opt & OCFS2_MOUNT_DATA_WRITEBACK)) { |
ccd979bd MF |
627 | ret = -EINVAL; |
628 | mlog(ML_ERROR, "Cannot change data mode on remount\n"); | |
629 | goto out; | |
630 | } | |
631 | ||
12462f1d JB |
632 | /* Probably don't want this on remount; it might |
633 | * mess with other nodes */ | |
634 | if (!(osb->s_mount_opt & OCFS2_MOUNT_INODE64) && | |
635 | (parsed_options.mount_opt & OCFS2_MOUNT_INODE64)) { | |
636 | ret = -EINVAL; | |
637 | mlog(ML_ERROR, "Cannot enable inode64 on remount\n"); | |
638 | goto out; | |
639 | } | |
640 | ||
ccd979bd MF |
641 | /* We're going to/from readonly mode. */ |
642 | if ((*flags & MS_RDONLY) != (sb->s_flags & MS_RDONLY)) { | |
19ece546 JK |
643 | /* Disable quota accounting before remounting RO */ |
644 | if (*flags & MS_RDONLY) { | |
645 | ret = ocfs2_susp_quotas(osb, 0); | |
646 | if (ret < 0) | |
647 | goto out; | |
648 | } | |
ccd979bd MF |
649 | /* Lock here so the check of HARD_RO and the potential |
650 | * setting of SOFT_RO is atomic. */ | |
651 | spin_lock(&osb->osb_lock); | |
652 | if (osb->osb_flags & OCFS2_OSB_HARD_RO) { | |
653 | mlog(ML_ERROR, "Remount on readonly device is forbidden.\n"); | |
654 | ret = -EROFS; | |
655 | goto unlock_osb; | |
656 | } | |
657 | ||
658 | if (*flags & MS_RDONLY) { | |
659 | mlog(0, "Going to ro mode.\n"); | |
660 | sb->s_flags |= MS_RDONLY; | |
661 | osb->osb_flags |= OCFS2_OSB_SOFT_RO; | |
662 | } else { | |
663 | mlog(0, "Making ro filesystem writeable.\n"); | |
664 | ||
665 | if (osb->osb_flags & OCFS2_OSB_ERROR_FS) { | |
666 | mlog(ML_ERROR, "Cannot remount RDWR " | |
667 | "filesystem due to previous errors.\n"); | |
668 | ret = -EROFS; | |
669 | goto unlock_osb; | |
670 | } | |
671 | incompat_features = OCFS2_HAS_RO_COMPAT_FEATURE(sb, ~OCFS2_FEATURE_RO_COMPAT_SUPP); | |
672 | if (incompat_features) { | |
673 | mlog(ML_ERROR, "Cannot remount RDWR because " | |
674 | "of unsupported optional features " | |
675 | "(%x).\n", incompat_features); | |
676 | ret = -EINVAL; | |
677 | goto unlock_osb; | |
678 | } | |
679 | sb->s_flags &= ~MS_RDONLY; | |
680 | osb->osb_flags &= ~OCFS2_OSB_SOFT_RO; | |
681 | } | |
682 | unlock_osb: | |
683 | spin_unlock(&osb->osb_lock); | |
19ece546 JK |
684 | /* Enable quota accounting after remounting RW */ |
685 | if (!ret && !(*flags & MS_RDONLY)) { | |
686 | if (sb_any_quota_suspended(sb)) | |
687 | ret = ocfs2_susp_quotas(osb, 1); | |
688 | else | |
689 | ret = ocfs2_enable_quotas(osb); | |
690 | if (ret < 0) { | |
691 | /* Return back changes... */ | |
692 | spin_lock(&osb->osb_lock); | |
693 | sb->s_flags |= MS_RDONLY; | |
694 | osb->osb_flags |= OCFS2_OSB_SOFT_RO; | |
695 | spin_unlock(&osb->osb_lock); | |
696 | goto out; | |
697 | } | |
698 | } | |
ccd979bd MF |
699 | } |
700 | ||
701 | if (!ret) { | |
ccd979bd MF |
702 | /* Only save off the new mount options in case of a successful |
703 | * remount. */ | |
c0123ade TY |
704 | osb->s_mount_opt = parsed_options.mount_opt; |
705 | osb->s_atime_quantum = parsed_options.atime_quantum; | |
706 | osb->preferred_slot = parsed_options.slot; | |
d147b3d6 MF |
707 | if (parsed_options.commit_interval) |
708 | osb->osb_commit_interval = parsed_options.commit_interval; | |
e001e796 MF |
709 | |
710 | if (!ocfs2_is_hard_readonly(osb)) | |
711 | ocfs2_set_journal_params(osb); | |
57b09bb5 JK |
712 | |
713 | sb->s_flags = (sb->s_flags & ~MS_POSIXACL) | | |
714 | ((osb->s_mount_opt & OCFS2_MOUNT_POSIX_ACL) ? | |
715 | MS_POSIXACL : 0); | |
ccd979bd MF |
716 | } |
717 | out: | |
337eb00a | 718 | unlock_kernel(); |
ccd979bd MF |
719 | return ret; |
720 | } | |
721 | ||
722 | static int ocfs2_sb_probe(struct super_block *sb, | |
723 | struct buffer_head **bh, | |
73be192b JB |
724 | int *sector_size, |
725 | struct ocfs2_blockcheck_stats *stats) | |
ccd979bd | 726 | { |
bddb8eb3 | 727 | int status, tmpstat; |
ccd979bd MF |
728 | struct ocfs1_vol_disk_hdr *hdr; |
729 | struct ocfs2_dinode *di; | |
730 | int blksize; | |
731 | ||
732 | *bh = NULL; | |
733 | ||
734 | /* may be > 512 */ | |
e1defc4f | 735 | *sector_size = bdev_logical_block_size(sb->s_bdev); |
ccd979bd MF |
736 | if (*sector_size > OCFS2_MAX_BLOCKSIZE) { |
737 | mlog(ML_ERROR, "Hardware sector size too large: %d (max=%d)\n", | |
738 | *sector_size, OCFS2_MAX_BLOCKSIZE); | |
739 | status = -EINVAL; | |
740 | goto bail; | |
741 | } | |
742 | ||
743 | /* Can this really happen? */ | |
744 | if (*sector_size < OCFS2_MIN_BLOCKSIZE) | |
745 | *sector_size = OCFS2_MIN_BLOCKSIZE; | |
746 | ||
747 | /* check block zero for old format */ | |
748 | status = ocfs2_get_sector(sb, bh, 0, *sector_size); | |
749 | if (status < 0) { | |
750 | mlog_errno(status); | |
751 | goto bail; | |
752 | } | |
753 | hdr = (struct ocfs1_vol_disk_hdr *) (*bh)->b_data; | |
754 | if (hdr->major_version == OCFS1_MAJOR_VERSION) { | |
755 | mlog(ML_ERROR, "incompatible version: %u.%u\n", | |
756 | hdr->major_version, hdr->minor_version); | |
757 | status = -EINVAL; | |
758 | } | |
759 | if (memcmp(hdr->signature, OCFS1_VOLUME_SIGNATURE, | |
760 | strlen(OCFS1_VOLUME_SIGNATURE)) == 0) { | |
761 | mlog(ML_ERROR, "incompatible volume signature: %8s\n", | |
762 | hdr->signature); | |
763 | status = -EINVAL; | |
764 | } | |
765 | brelse(*bh); | |
766 | *bh = NULL; | |
767 | if (status < 0) { | |
768 | mlog(ML_ERROR, "This is an ocfs v1 filesystem which must be " | |
769 | "upgraded before mounting with ocfs v2\n"); | |
770 | goto bail; | |
771 | } | |
772 | ||
773 | /* | |
774 | * Now check at magic offset for 512, 1024, 2048, 4096 | |
775 | * blocksizes. 4096 is the maximum blocksize because it is | |
776 | * the minimum clustersize. | |
777 | */ | |
778 | status = -EINVAL; | |
779 | for (blksize = *sector_size; | |
780 | blksize <= OCFS2_MAX_BLOCKSIZE; | |
781 | blksize <<= 1) { | |
782 | tmpstat = ocfs2_get_sector(sb, bh, | |
783 | OCFS2_SUPER_BLOCK_BLKNO, | |
784 | blksize); | |
785 | if (tmpstat < 0) { | |
786 | status = tmpstat; | |
787 | mlog_errno(status); | |
fb5cbe9e | 788 | break; |
ccd979bd MF |
789 | } |
790 | di = (struct ocfs2_dinode *) (*bh)->b_data; | |
73be192b | 791 | memset(stats, 0, sizeof(struct ocfs2_blockcheck_stats)); |
1c1d9793 | 792 | spin_lock_init(&stats->b_lock); |
fb5cbe9e JB |
793 | tmpstat = ocfs2_verify_volume(di, *bh, blksize, stats); |
794 | if (tmpstat < 0) { | |
795 | brelse(*bh); | |
796 | *bh = NULL; | |
797 | } | |
798 | if (tmpstat != -EAGAIN) { | |
799 | status = tmpstat; | |
ccd979bd | 800 | break; |
fb5cbe9e | 801 | } |
ccd979bd MF |
802 | } |
803 | ||
804 | bail: | |
805 | return status; | |
806 | } | |
807 | ||
c271c5c2 SM |
808 | static int ocfs2_verify_heartbeat(struct ocfs2_super *osb) |
809 | { | |
810 | if (ocfs2_mount_local(osb)) { | |
811 | if (osb->s_mount_opt & OCFS2_MOUNT_HB_LOCAL) { | |
812 | mlog(ML_ERROR, "Cannot heartbeat on a locally " | |
813 | "mounted device.\n"); | |
814 | return -EINVAL; | |
815 | } | |
816 | } | |
817 | ||
b61817e1 JB |
818 | if (ocfs2_userspace_stack(osb)) { |
819 | if (osb->s_mount_opt & OCFS2_MOUNT_HB_LOCAL) { | |
820 | mlog(ML_ERROR, "Userspace stack expected, but " | |
821 | "o2cb heartbeat arguments passed to mount\n"); | |
822 | return -EINVAL; | |
823 | } | |
824 | } | |
825 | ||
c271c5c2 | 826 | if (!(osb->s_mount_opt & OCFS2_MOUNT_HB_LOCAL)) { |
b61817e1 JB |
827 | if (!ocfs2_mount_local(osb) && !ocfs2_is_hard_readonly(osb) && |
828 | !ocfs2_userspace_stack(osb)) { | |
c271c5c2 SM |
829 | mlog(ML_ERROR, "Heartbeat has to be started to mount " |
830 | "a read-write clustered device.\n"); | |
831 | return -EINVAL; | |
832 | } | |
833 | } | |
834 | ||
835 | return 0; | |
836 | } | |
837 | ||
b61817e1 JB |
838 | /* |
839 | * If we're using a userspace stack, mount should have passed | |
840 | * a name that matches the disk. If not, mount should not | |
841 | * have passed a stack. | |
842 | */ | |
843 | static int ocfs2_verify_userspace_stack(struct ocfs2_super *osb, | |
844 | struct mount_options *mopt) | |
845 | { | |
846 | if (!ocfs2_userspace_stack(osb) && mopt->cluster_stack[0]) { | |
847 | mlog(ML_ERROR, | |
848 | "cluster stack passed to mount, but this filesystem " | |
849 | "does not support it\n"); | |
850 | return -EINVAL; | |
851 | } | |
852 | ||
853 | if (ocfs2_userspace_stack(osb) && | |
854 | strncmp(osb->osb_cluster_stack, mopt->cluster_stack, | |
855 | OCFS2_STACK_LABEL_LEN)) { | |
856 | mlog(ML_ERROR, | |
857 | "cluster stack passed to mount (\"%s\") does not " | |
858 | "match the filesystem (\"%s\")\n", | |
859 | mopt->cluster_stack, | |
860 | osb->osb_cluster_stack); | |
861 | return -EINVAL; | |
862 | } | |
863 | ||
864 | return 0; | |
865 | } | |
866 | ||
19ece546 JK |
867 | static int ocfs2_susp_quotas(struct ocfs2_super *osb, int unsuspend) |
868 | { | |
869 | int type; | |
870 | struct super_block *sb = osb->sb; | |
871 | unsigned int feature[MAXQUOTAS] = { OCFS2_FEATURE_RO_COMPAT_USRQUOTA, | |
872 | OCFS2_FEATURE_RO_COMPAT_GRPQUOTA}; | |
873 | int status = 0; | |
874 | ||
875 | for (type = 0; type < MAXQUOTAS; type++) { | |
876 | if (!OCFS2_HAS_RO_COMPAT_FEATURE(sb, feature[type])) | |
877 | continue; | |
878 | if (unsuspend) | |
879 | status = vfs_quota_enable( | |
880 | sb_dqopt(sb)->files[type], | |
881 | type, QFMT_OCFS2, | |
882 | DQUOT_SUSPENDED); | |
883 | else | |
884 | status = vfs_quota_disable(sb, type, | |
885 | DQUOT_SUSPENDED); | |
886 | if (status < 0) | |
887 | break; | |
888 | } | |
889 | if (status < 0) | |
890 | mlog(ML_ERROR, "Failed to suspend/unsuspend quotas on " | |
891 | "remount (error = %d).\n", status); | |
892 | return status; | |
893 | } | |
894 | ||
895 | static int ocfs2_enable_quotas(struct ocfs2_super *osb) | |
896 | { | |
897 | struct inode *inode[MAXQUOTAS] = { NULL, NULL }; | |
898 | struct super_block *sb = osb->sb; | |
899 | unsigned int feature[MAXQUOTAS] = { OCFS2_FEATURE_RO_COMPAT_USRQUOTA, | |
900 | OCFS2_FEATURE_RO_COMPAT_GRPQUOTA}; | |
901 | unsigned int ino[MAXQUOTAS] = { LOCAL_USER_QUOTA_SYSTEM_INODE, | |
902 | LOCAL_GROUP_QUOTA_SYSTEM_INODE }; | |
903 | int status; | |
904 | int type; | |
905 | ||
906 | sb_dqopt(sb)->flags |= DQUOT_QUOTA_SYS_FILE | DQUOT_NEGATIVE_USAGE; | |
907 | for (type = 0; type < MAXQUOTAS; type++) { | |
908 | if (!OCFS2_HAS_RO_COMPAT_FEATURE(sb, feature[type])) | |
909 | continue; | |
910 | inode[type] = ocfs2_get_system_file_inode(osb, ino[type], | |
911 | osb->slot_num); | |
912 | if (!inode[type]) { | |
913 | status = -ENOENT; | |
914 | goto out_quota_off; | |
915 | } | |
916 | status = vfs_quota_enable(inode[type], type, QFMT_OCFS2, | |
917 | DQUOT_USAGE_ENABLED); | |
918 | if (status < 0) | |
919 | goto out_quota_off; | |
920 | } | |
921 | ||
922 | for (type = 0; type < MAXQUOTAS; type++) | |
923 | iput(inode[type]); | |
924 | return 0; | |
925 | out_quota_off: | |
926 | ocfs2_disable_quotas(osb); | |
927 | for (type = 0; type < MAXQUOTAS; type++) | |
928 | iput(inode[type]); | |
929 | mlog_errno(status); | |
930 | return status; | |
931 | } | |
932 | ||
933 | static void ocfs2_disable_quotas(struct ocfs2_super *osb) | |
934 | { | |
935 | int type; | |
936 | struct inode *inode; | |
937 | struct super_block *sb = osb->sb; | |
938 | ||
939 | /* We mostly ignore errors in this function because there's not much | |
940 | * we can do when we see them */ | |
941 | for (type = 0; type < MAXQUOTAS; type++) { | |
942 | if (!sb_has_quota_loaded(sb, type)) | |
943 | continue; | |
944 | inode = igrab(sb->s_dquot.files[type]); | |
945 | /* Turn off quotas. This will remove all dquot structures from | |
946 | * memory and so they will be automatically synced to global | |
947 | * quota files */ | |
948 | vfs_quota_disable(sb, type, DQUOT_USAGE_ENABLED | | |
949 | DQUOT_LIMITS_ENABLED); | |
950 | if (!inode) | |
951 | continue; | |
952 | iput(inode); | |
953 | } | |
954 | } | |
955 | ||
956 | /* Handle quota on quotactl */ | |
957 | static int ocfs2_quota_on(struct super_block *sb, int type, int format_id, | |
958 | char *path, int remount) | |
959 | { | |
960 | unsigned int feature[MAXQUOTAS] = { OCFS2_FEATURE_RO_COMPAT_USRQUOTA, | |
961 | OCFS2_FEATURE_RO_COMPAT_GRPQUOTA}; | |
962 | ||
963 | if (!OCFS2_HAS_RO_COMPAT_FEATURE(sb, feature[type])) | |
964 | return -EINVAL; | |
965 | ||
966 | if (remount) | |
967 | return 0; /* Just ignore it has been handled in | |
968 | * ocfs2_remount() */ | |
969 | return vfs_quota_enable(sb_dqopt(sb)->files[type], type, | |
970 | format_id, DQUOT_LIMITS_ENABLED); | |
971 | } | |
972 | ||
973 | /* Handle quota off quotactl */ | |
974 | static int ocfs2_quota_off(struct super_block *sb, int type, int remount) | |
975 | { | |
976 | if (remount) | |
977 | return 0; /* Ignore now and handle later in | |
978 | * ocfs2_remount() */ | |
979 | return vfs_quota_disable(sb, type, DQUOT_LIMITS_ENABLED); | |
980 | } | |
981 | ||
0d54b217 | 982 | static const struct quotactl_ops ocfs2_quotactl_ops = { |
19ece546 JK |
983 | .quota_on = ocfs2_quota_on, |
984 | .quota_off = ocfs2_quota_off, | |
985 | .quota_sync = vfs_quota_sync, | |
986 | .get_info = vfs_get_dqinfo, | |
987 | .set_info = vfs_set_dqinfo, | |
988 | .get_dqblk = vfs_get_dqblk, | |
989 | .set_dqblk = vfs_set_dqblk, | |
990 | }; | |
991 | ||
ccd979bd MF |
992 | static int ocfs2_fill_super(struct super_block *sb, void *data, int silent) |
993 | { | |
994 | struct dentry *root; | |
995 | int status, sector_size; | |
c0123ade | 996 | struct mount_options parsed_options; |
ccd979bd MF |
997 | struct inode *inode = NULL; |
998 | struct ocfs2_super *osb = NULL; | |
999 | struct buffer_head *bh = NULL; | |
c271c5c2 | 1000 | char nodestr[8]; |
73be192b | 1001 | struct ocfs2_blockcheck_stats stats; |
ccd979bd MF |
1002 | |
1003 | mlog_entry("%p, %p, %i", sb, data, silent); | |
1004 | ||
c0123ade | 1005 | if (!ocfs2_parse_options(sb, data, &parsed_options, 0)) { |
ccd979bd MF |
1006 | status = -EINVAL; |
1007 | goto read_super_error; | |
1008 | } | |
1009 | ||
1010 | /* probe for superblock */ | |
73be192b | 1011 | status = ocfs2_sb_probe(sb, &bh, §or_size, &stats); |
ccd979bd MF |
1012 | if (status < 0) { |
1013 | mlog(ML_ERROR, "superblock probe failed!\n"); | |
1014 | goto read_super_error; | |
1015 | } | |
1016 | ||
73be192b | 1017 | status = ocfs2_initialize_super(sb, bh, sector_size, &stats); |
ccd979bd MF |
1018 | osb = OCFS2_SB(sb); |
1019 | if (status < 0) { | |
1020 | mlog_errno(status); | |
1021 | goto read_super_error; | |
1022 | } | |
1023 | brelse(bh); | |
1024 | bh = NULL; | |
a68979b8 | 1025 | |
5297aad8 JK |
1026 | if (!ocfs2_check_set_options(sb, &parsed_options)) { |
1027 | status = -EINVAL; | |
1028 | goto read_super_error; | |
1029 | } | |
c0123ade TY |
1030 | osb->s_mount_opt = parsed_options.mount_opt; |
1031 | osb->s_atime_quantum = parsed_options.atime_quantum; | |
1032 | osb->preferred_slot = parsed_options.slot; | |
d147b3d6 | 1033 | osb->osb_commit_interval = parsed_options.commit_interval; |
9c7af40b MF |
1034 | osb->local_alloc_default_bits = ocfs2_megabytes_to_clusters(sb, parsed_options.localalloc_opt); |
1035 | osb->local_alloc_bits = osb->local_alloc_default_bits; | |
d02f00cc | 1036 | osb->osb_resv_level = parsed_options.resv_level; |
ccd979bd | 1037 | |
b61817e1 JB |
1038 | status = ocfs2_verify_userspace_stack(osb, &parsed_options); |
1039 | if (status) | |
1040 | goto read_super_error; | |
1041 | ||
ccd979bd MF |
1042 | sb->s_magic = OCFS2_SUPER_MAGIC; |
1043 | ||
a68979b8 TY |
1044 | sb->s_flags = (sb->s_flags & ~MS_POSIXACL) | |
1045 | ((osb->s_mount_opt & OCFS2_MOUNT_POSIX_ACL) ? MS_POSIXACL : 0); | |
1046 | ||
ccd979bd MF |
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 | |
2bd63216 | 1073 | mlog_errno(status); |
ccd979bd MF |
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)) { | |
ccd979bd MF |
1085 | if (sb->s_flags & MS_RDONLY) |
1086 | ocfs2_set_ro_flag(osb, 0); | |
1087 | } | |
1088 | ||
c271c5c2 SM |
1089 | status = ocfs2_verify_heartbeat(osb); |
1090 | if (status < 0) { | |
1091 | mlog_errno(status); | |
1092 | goto read_super_error; | |
1093 | } | |
1094 | ||
ccd979bd MF |
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 | ||
50397507 SM |
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 | ||
73be192b JB |
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 | ||
ccd979bd MF |
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 | ||
c271c5c2 SM |
1149 | if (ocfs2_mount_local(osb)) |
1150 | snprintf(nodestr, sizeof(nodestr), "local"); | |
1151 | else | |
19fdb624 | 1152 | snprintf(nodestr, sizeof(nodestr), "%u", osb->node_num); |
c271c5c2 SM |
1153 | |
1154 | printk(KERN_INFO "ocfs2: Mounting device (%s) on (node %s, slot %d) " | |
781ee3e2 | 1155 | "with %s data mode.\n", |
c271c5c2 | 1156 | osb->dev_str, nodestr, osb->slot_num, |
ccd979bd MF |
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 | ||
19ece546 JK |
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 | ||
df152c24 | 1185 | /* Start this when the mount is almost sure of being successful */ |
8b712cd5 | 1186 | ocfs2_orphan_scan_start(osb); |
df152c24 | 1187 | |
ccd979bd MF |
1188 | mlog_exit(status); |
1189 | return status; | |
1190 | ||
1191 | read_super_error: | |
a81cb88b | 1192 | brelse(bh); |
ccd979bd MF |
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 | ||
454e2398 DH |
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) | |
ccd979bd | 1212 | { |
454e2398 DH |
1213 | return get_sb_bdev(fs_type, flags, dev_name, data, ocfs2_fill_super, |
1214 | mnt); | |
ccd979bd MF |
1215 | } |
1216 | ||
f7b1aa69 JK |
1217 | static void ocfs2_kill_sb(struct super_block *sb) |
1218 | { | |
1219 | struct ocfs2_super *osb = OCFS2_SB(sb); | |
1220 | ||
5fd13189 JK |
1221 | /* Failed mount? */ |
1222 | if (!osb || atomic_read(&osb->vol_state) == VOLUME_DISABLED) | |
1223 | goto out; | |
1224 | ||
f7b1aa69 JK |
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); | |
5fd13189 | 1231 | out: |
f7b1aa69 JK |
1232 | kill_block_super(sb); |
1233 | } | |
1234 | ||
ccd979bd MF |
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? */ | |
f7b1aa69 JK |
1240 | .kill_sb = ocfs2_kill_sb, |
1241 | ||
1ba9da2f | 1242 | .fs_flags = FS_REQUIRES_DEV|FS_RENAME_DOES_D_MOVE, |
ccd979bd MF |
1243 | .next = NULL |
1244 | }; | |
1245 | ||
5297aad8 JK |
1246 | static int ocfs2_check_set_options(struct super_block *sb, |
1247 | struct mount_options *options) | |
1248 | { | |
1249 | if (options->mount_opt & OCFS2_MOUNT_USRQUOTA && | |
1250 | !OCFS2_HAS_RO_COMPAT_FEATURE(sb, | |
1251 | OCFS2_FEATURE_RO_COMPAT_USRQUOTA)) { | |
1252 | mlog(ML_ERROR, "User quotas were requested, but this " | |
1253 | "filesystem does not have the feature enabled.\n"); | |
1254 | return 0; | |
1255 | } | |
1256 | if (options->mount_opt & OCFS2_MOUNT_GRPQUOTA && | |
1257 | !OCFS2_HAS_RO_COMPAT_FEATURE(sb, | |
1258 | OCFS2_FEATURE_RO_COMPAT_GRPQUOTA)) { | |
1259 | mlog(ML_ERROR, "Group quotas were requested, but this " | |
1260 | "filesystem does not have the feature enabled.\n"); | |
1261 | return 0; | |
1262 | } | |
1263 | if (options->mount_opt & OCFS2_MOUNT_POSIX_ACL && | |
1264 | !OCFS2_HAS_INCOMPAT_FEATURE(sb, OCFS2_FEATURE_INCOMPAT_XATTR)) { | |
1265 | mlog(ML_ERROR, "ACL support requested but extended attributes " | |
1266 | "feature is not enabled\n"); | |
1267 | return 0; | |
1268 | } | |
1269 | /* No ACL setting specified? Use XATTR feature... */ | |
1270 | if (!(options->mount_opt & (OCFS2_MOUNT_POSIX_ACL | | |
1271 | OCFS2_MOUNT_NO_POSIX_ACL))) { | |
1272 | if (OCFS2_HAS_INCOMPAT_FEATURE(sb, OCFS2_FEATURE_INCOMPAT_XATTR)) | |
1273 | options->mount_opt |= OCFS2_MOUNT_POSIX_ACL; | |
1274 | else | |
1275 | options->mount_opt |= OCFS2_MOUNT_NO_POSIX_ACL; | |
1276 | } | |
1277 | return 1; | |
1278 | } | |
1279 | ||
ccd979bd MF |
1280 | static int ocfs2_parse_options(struct super_block *sb, |
1281 | char *options, | |
c0123ade | 1282 | struct mount_options *mopt, |
ccd979bd MF |
1283 | int is_remount) |
1284 | { | |
1285 | int status; | |
1286 | char *p; | |
1287 | ||
1288 | mlog_entry("remount: %d, options: \"%s\"\n", is_remount, | |
1289 | options ? options : "(none)"); | |
1290 | ||
d147b3d6 | 1291 | mopt->commit_interval = 0; |
c0123ade TY |
1292 | mopt->mount_opt = 0; |
1293 | mopt->atime_quantum = OCFS2_DEFAULT_ATIME_QUANTUM; | |
1294 | mopt->slot = OCFS2_INVALID_SLOT; | |
2fbe8d1e | 1295 | mopt->localalloc_opt = OCFS2_DEFAULT_LOCAL_ALLOC_SIZE; |
b61817e1 | 1296 | mopt->cluster_stack[0] = '\0'; |
d02f00cc | 1297 | mopt->resv_level = OCFS2_DEFAULT_RESV_LEVEL; |
ccd979bd MF |
1298 | |
1299 | if (!options) { | |
1300 | status = 1; | |
1301 | goto bail; | |
1302 | } | |
1303 | ||
1304 | while ((p = strsep(&options, ",")) != NULL) { | |
1305 | int token, option; | |
1306 | substring_t args[MAX_OPT_ARGS]; | |
1307 | ||
1308 | if (!*p) | |
1309 | continue; | |
1310 | ||
1311 | token = match_token(p, tokens, args); | |
1312 | switch (token) { | |
1313 | case Opt_hb_local: | |
c0123ade | 1314 | mopt->mount_opt |= OCFS2_MOUNT_HB_LOCAL; |
ccd979bd MF |
1315 | break; |
1316 | case Opt_hb_none: | |
c0123ade | 1317 | mopt->mount_opt &= ~OCFS2_MOUNT_HB_LOCAL; |
ccd979bd MF |
1318 | break; |
1319 | case Opt_barrier: | |
1320 | if (match_int(&args[0], &option)) { | |
1321 | status = 0; | |
1322 | goto bail; | |
1323 | } | |
1324 | if (option) | |
c0123ade | 1325 | mopt->mount_opt |= OCFS2_MOUNT_BARRIER; |
ccd979bd | 1326 | else |
c0123ade | 1327 | mopt->mount_opt &= ~OCFS2_MOUNT_BARRIER; |
ccd979bd MF |
1328 | break; |
1329 | case Opt_intr: | |
c0123ade | 1330 | mopt->mount_opt &= ~OCFS2_MOUNT_NOINTR; |
ccd979bd MF |
1331 | break; |
1332 | case Opt_nointr: | |
c0123ade | 1333 | mopt->mount_opt |= OCFS2_MOUNT_NOINTR; |
ccd979bd MF |
1334 | break; |
1335 | case Opt_err_panic: | |
c0123ade | 1336 | mopt->mount_opt |= OCFS2_MOUNT_ERRORS_PANIC; |
ccd979bd MF |
1337 | break; |
1338 | case Opt_err_ro: | |
c0123ade | 1339 | mopt->mount_opt &= ~OCFS2_MOUNT_ERRORS_PANIC; |
ccd979bd MF |
1340 | break; |
1341 | case Opt_data_ordered: | |
c0123ade | 1342 | mopt->mount_opt &= ~OCFS2_MOUNT_DATA_WRITEBACK; |
ccd979bd MF |
1343 | break; |
1344 | case Opt_data_writeback: | |
c0123ade | 1345 | mopt->mount_opt |= OCFS2_MOUNT_DATA_WRITEBACK; |
ccd979bd | 1346 | break; |
cf1d6c76 TY |
1347 | case Opt_user_xattr: |
1348 | mopt->mount_opt &= ~OCFS2_MOUNT_NOUSERXATTR; | |
1349 | break; | |
1350 | case Opt_nouser_xattr: | |
1351 | mopt->mount_opt |= OCFS2_MOUNT_NOUSERXATTR; | |
1352 | break; | |
7f1a37e3 TY |
1353 | case Opt_atime_quantum: |
1354 | if (match_int(&args[0], &option)) { | |
1355 | status = 0; | |
1356 | goto bail; | |
1357 | } | |
1358 | if (option >= 0) | |
c0123ade | 1359 | mopt->atime_quantum = option; |
7f1a37e3 | 1360 | break; |
baf4661a SM |
1361 | case Opt_slot: |
1362 | option = 0; | |
1363 | if (match_int(&args[0], &option)) { | |
1364 | status = 0; | |
1365 | goto bail; | |
1366 | } | |
1367 | if (option) | |
c0123ade | 1368 | mopt->slot = (s16)option; |
baf4661a | 1369 | break; |
d147b3d6 MF |
1370 | case Opt_commit: |
1371 | option = 0; | |
1372 | if (match_int(&args[0], &option)) { | |
1373 | status = 0; | |
1374 | goto bail; | |
1375 | } | |
1376 | if (option < 0) | |
1377 | return 0; | |
1378 | if (option == 0) | |
2b4e30fb | 1379 | option = JBD2_DEFAULT_MAX_COMMIT_AGE; |
d147b3d6 MF |
1380 | mopt->commit_interval = HZ * option; |
1381 | break; | |
2fbe8d1e SM |
1382 | case Opt_localalloc: |
1383 | option = 0; | |
1384 | if (match_int(&args[0], &option)) { | |
1385 | status = 0; | |
1386 | goto bail; | |
1387 | } | |
1388 | if (option >= 0 && (option <= ocfs2_local_alloc_size(sb) * 8)) | |
1389 | mopt->localalloc_opt = option; | |
1390 | break; | |
53fc622b MF |
1391 | case Opt_localflocks: |
1392 | /* | |
1393 | * Changing this during remount could race | |
1394 | * flock() requests, or "unbalance" existing | |
1395 | * ones (e.g., a lock is taken in one mode but | |
1396 | * dropped in the other). If users care enough | |
1397 | * to flip locking modes during remount, we | |
1398 | * could add a "local" flag to individual | |
1399 | * flock structures for proper tracking of | |
1400 | * state. | |
1401 | */ | |
1402 | if (!is_remount) | |
1403 | mopt->mount_opt |= OCFS2_MOUNT_LOCALFLOCKS; | |
1404 | break; | |
b61817e1 JB |
1405 | case Opt_stack: |
1406 | /* Check both that the option we were passed | |
1407 | * is of the right length and that it is a proper | |
1408 | * string of the right length. | |
1409 | */ | |
1410 | if (((args[0].to - args[0].from) != | |
1411 | OCFS2_STACK_LABEL_LEN) || | |
1412 | (strnlen(args[0].from, | |
1413 | OCFS2_STACK_LABEL_LEN) != | |
1414 | OCFS2_STACK_LABEL_LEN)) { | |
1415 | mlog(ML_ERROR, | |
1416 | "Invalid cluster_stack option\n"); | |
1417 | status = 0; | |
1418 | goto bail; | |
1419 | } | |
1420 | memcpy(mopt->cluster_stack, args[0].from, | |
1421 | OCFS2_STACK_LABEL_LEN); | |
1422 | mopt->cluster_stack[OCFS2_STACK_LABEL_LEN] = '\0'; | |
1423 | break; | |
12462f1d JB |
1424 | case Opt_inode64: |
1425 | mopt->mount_opt |= OCFS2_MOUNT_INODE64; | |
1426 | break; | |
19ece546 | 1427 | case Opt_usrquota: |
19ece546 JK |
1428 | mopt->mount_opt |= OCFS2_MOUNT_USRQUOTA; |
1429 | break; | |
1430 | case Opt_grpquota: | |
19ece546 JK |
1431 | mopt->mount_opt |= OCFS2_MOUNT_GRPQUOTA; |
1432 | break; | |
a68979b8 TY |
1433 | case Opt_acl: |
1434 | mopt->mount_opt |= OCFS2_MOUNT_POSIX_ACL; | |
5297aad8 | 1435 | mopt->mount_opt &= ~OCFS2_MOUNT_NO_POSIX_ACL; |
a68979b8 TY |
1436 | break; |
1437 | case Opt_noacl: | |
5297aad8 | 1438 | mopt->mount_opt |= OCFS2_MOUNT_NO_POSIX_ACL; |
a68979b8 TY |
1439 | mopt->mount_opt &= ~OCFS2_MOUNT_POSIX_ACL; |
1440 | break; | |
d02f00cc MF |
1441 | case Opt_resv_level: |
1442 | if (is_remount) | |
1443 | break; | |
1444 | if (match_int(&args[0], &option)) { | |
1445 | status = 0; | |
1446 | goto bail; | |
1447 | } | |
1448 | if (option >= OCFS2_MIN_RESV_LEVEL && | |
1449 | option < OCFS2_MAX_RESV_LEVEL) | |
1450 | mopt->resv_level = option; | |
1451 | break; | |
ccd979bd MF |
1452 | default: |
1453 | mlog(ML_ERROR, | |
1454 | "Unrecognized mount option \"%s\" " | |
1455 | "or missing value\n", p); | |
1456 | status = 0; | |
1457 | goto bail; | |
1458 | } | |
1459 | } | |
1460 | ||
1461 | status = 1; | |
1462 | ||
1463 | bail: | |
1464 | mlog_exit(status); | |
1465 | return status; | |
1466 | } | |
1467 | ||
d550071c SM |
1468 | static int ocfs2_show_options(struct seq_file *s, struct vfsmount *mnt) |
1469 | { | |
1470 | struct ocfs2_super *osb = OCFS2_SB(mnt->mnt_sb); | |
1471 | unsigned long opts = osb->s_mount_opt; | |
ebcee4b5 | 1472 | unsigned int local_alloc_megs; |
d550071c SM |
1473 | |
1474 | if (opts & OCFS2_MOUNT_HB_LOCAL) | |
1475 | seq_printf(s, ",_netdev,heartbeat=local"); | |
1476 | else | |
1477 | seq_printf(s, ",heartbeat=none"); | |
1478 | ||
1479 | if (opts & OCFS2_MOUNT_NOINTR) | |
1480 | seq_printf(s, ",nointr"); | |
1481 | ||
1482 | if (opts & OCFS2_MOUNT_DATA_WRITEBACK) | |
1483 | seq_printf(s, ",data=writeback"); | |
1484 | else | |
1485 | seq_printf(s, ",data=ordered"); | |
1486 | ||
1487 | if (opts & OCFS2_MOUNT_BARRIER) | |
1488 | seq_printf(s, ",barrier=1"); | |
1489 | ||
1490 | if (opts & OCFS2_MOUNT_ERRORS_PANIC) | |
1491 | seq_printf(s, ",errors=panic"); | |
1492 | else | |
1493 | seq_printf(s, ",errors=remount-ro"); | |
1494 | ||
1495 | if (osb->preferred_slot != OCFS2_INVALID_SLOT) | |
1496 | seq_printf(s, ",preferred_slot=%d", osb->preferred_slot); | |
1497 | ||
1498 | if (osb->s_atime_quantum != OCFS2_DEFAULT_ATIME_QUANTUM) | |
1499 | seq_printf(s, ",atime_quantum=%u", osb->s_atime_quantum); | |
1500 | ||
d147b3d6 MF |
1501 | if (osb->osb_commit_interval) |
1502 | seq_printf(s, ",commit=%u", | |
1503 | (unsigned) (osb->osb_commit_interval / HZ)); | |
1504 | ||
ebcee4b5 MF |
1505 | local_alloc_megs = osb->local_alloc_bits >> (20 - osb->s_clustersize_bits); |
1506 | if (local_alloc_megs != OCFS2_DEFAULT_LOCAL_ALLOC_SIZE) | |
1507 | seq_printf(s, ",localalloc=%d", local_alloc_megs); | |
2fbe8d1e | 1508 | |
53fc622b MF |
1509 | if (opts & OCFS2_MOUNT_LOCALFLOCKS) |
1510 | seq_printf(s, ",localflocks,"); | |
1511 | ||
b61817e1 JB |
1512 | if (osb->osb_cluster_stack[0]) |
1513 | seq_printf(s, ",cluster_stack=%.*s", OCFS2_STACK_LABEL_LEN, | |
1514 | osb->osb_cluster_stack); | |
19ece546 JK |
1515 | if (opts & OCFS2_MOUNT_USRQUOTA) |
1516 | seq_printf(s, ",usrquota"); | |
1517 | if (opts & OCFS2_MOUNT_GRPQUOTA) | |
1518 | seq_printf(s, ",grpquota"); | |
b61817e1 | 1519 | |
b0f73cfc SM |
1520 | if (opts & OCFS2_MOUNT_NOUSERXATTR) |
1521 | seq_printf(s, ",nouser_xattr"); | |
1522 | else | |
1523 | seq_printf(s, ",user_xattr"); | |
1524 | ||
12462f1d JB |
1525 | if (opts & OCFS2_MOUNT_INODE64) |
1526 | seq_printf(s, ",inode64"); | |
1527 | ||
a68979b8 TY |
1528 | if (opts & OCFS2_MOUNT_POSIX_ACL) |
1529 | seq_printf(s, ",acl"); | |
1530 | else | |
1531 | seq_printf(s, ",noacl"); | |
a68979b8 | 1532 | |
d02f00cc MF |
1533 | if (osb->osb_resv_level != OCFS2_DEFAULT_RESV_LEVEL) |
1534 | seq_printf(s, ",resv_level=%d", osb->osb_resv_level); | |
1535 | ||
d550071c SM |
1536 | return 0; |
1537 | } | |
1538 | ||
ccd979bd MF |
1539 | static int __init ocfs2_init(void) |
1540 | { | |
1541 | int status; | |
1542 | ||
1543 | mlog_entry_void(); | |
1544 | ||
1545 | ocfs2_print_version(); | |
1546 | ||
ccd979bd MF |
1547 | status = init_ocfs2_uptodate_cache(); |
1548 | if (status < 0) { | |
1549 | mlog_errno(status); | |
1550 | goto leave; | |
1551 | } | |
1552 | ||
1553 | status = ocfs2_initialize_mem_caches(); | |
1554 | if (status < 0) { | |
1555 | mlog_errno(status); | |
1556 | goto leave; | |
1557 | } | |
1558 | ||
1559 | ocfs2_wq = create_singlethread_workqueue("ocfs2_wq"); | |
1560 | if (!ocfs2_wq) { | |
1561 | status = -ENOMEM; | |
1562 | goto leave; | |
1563 | } | |
1564 | ||
ccd979bd MF |
1565 | ocfs2_debugfs_root = debugfs_create_dir("ocfs2", NULL); |
1566 | if (!ocfs2_debugfs_root) { | |
1567 | status = -EFAULT; | |
1568 | mlog(ML_ERROR, "Unable to create ocfs2 debugfs root.\n"); | |
1569 | } | |
1570 | ||
171bf93c MF |
1571 | status = ocfs2_quota_setup(); |
1572 | if (status) | |
1573 | goto leave; | |
1574 | ||
63e0c48a JB |
1575 | ocfs2_set_locking_protocol(); |
1576 | ||
9e33d69f | 1577 | status = register_quota_format(&ocfs2_quota_format); |
ccd979bd MF |
1578 | leave: |
1579 | if (status < 0) { | |
171bf93c | 1580 | ocfs2_quota_shutdown(); |
ccd979bd MF |
1581 | ocfs2_free_mem_caches(); |
1582 | exit_ocfs2_uptodate_cache(); | |
ccd979bd MF |
1583 | } |
1584 | ||
1585 | mlog_exit(status); | |
1586 | ||
1587 | if (status >= 0) { | |
1588 | return register_filesystem(&ocfs2_fs_type); | |
1589 | } else | |
1590 | return -1; | |
1591 | } | |
1592 | ||
1593 | static void __exit ocfs2_exit(void) | |
1594 | { | |
1595 | mlog_entry_void(); | |
1596 | ||
171bf93c MF |
1597 | ocfs2_quota_shutdown(); |
1598 | ||
ccd979bd MF |
1599 | if (ocfs2_wq) { |
1600 | flush_workqueue(ocfs2_wq); | |
1601 | destroy_workqueue(ocfs2_wq); | |
1602 | } | |
1603 | ||
9e33d69f JK |
1604 | unregister_quota_format(&ocfs2_quota_format); |
1605 | ||
ccd979bd MF |
1606 | debugfs_remove(ocfs2_debugfs_root); |
1607 | ||
1608 | ocfs2_free_mem_caches(); | |
1609 | ||
1610 | unregister_filesystem(&ocfs2_fs_type); | |
1611 | ||
ccd979bd MF |
1612 | exit_ocfs2_uptodate_cache(); |
1613 | ||
1614 | mlog_exit_void(); | |
1615 | } | |
1616 | ||
1617 | static void ocfs2_put_super(struct super_block *sb) | |
1618 | { | |
1619 | mlog_entry("(0x%p)\n", sb); | |
1620 | ||
6cfd0148 CH |
1621 | lock_kernel(); |
1622 | ||
ccd979bd MF |
1623 | ocfs2_sync_blockdev(sb); |
1624 | ocfs2_dismount_volume(sb, 0); | |
1625 | ||
6cfd0148 CH |
1626 | unlock_kernel(); |
1627 | ||
ccd979bd MF |
1628 | mlog_exit_void(); |
1629 | } | |
1630 | ||
726c3342 | 1631 | static int ocfs2_statfs(struct dentry *dentry, struct kstatfs *buf) |
ccd979bd MF |
1632 | { |
1633 | struct ocfs2_super *osb; | |
1634 | u32 numbits, freebits; | |
1635 | int status; | |
1636 | struct ocfs2_dinode *bm_lock; | |
1637 | struct buffer_head *bh = NULL; | |
1638 | struct inode *inode = NULL; | |
1639 | ||
726c3342 | 1640 | mlog_entry("(%p, %p)\n", dentry->d_sb, buf); |
ccd979bd | 1641 | |
726c3342 | 1642 | osb = OCFS2_SB(dentry->d_sb); |
ccd979bd MF |
1643 | |
1644 | inode = ocfs2_get_system_file_inode(osb, | |
1645 | GLOBAL_BITMAP_SYSTEM_INODE, | |
1646 | OCFS2_INVALID_SLOT); | |
1647 | if (!inode) { | |
1648 | mlog(ML_ERROR, "failed to get bitmap inode\n"); | |
1649 | status = -EIO; | |
1650 | goto bail; | |
1651 | } | |
1652 | ||
e63aecb6 | 1653 | status = ocfs2_inode_lock(inode, &bh, 0); |
ccd979bd MF |
1654 | if (status < 0) { |
1655 | mlog_errno(status); | |
1656 | goto bail; | |
1657 | } | |
1658 | ||
1659 | bm_lock = (struct ocfs2_dinode *) bh->b_data; | |
1660 | ||
1661 | numbits = le32_to_cpu(bm_lock->id1.bitmap1.i_total); | |
1662 | freebits = numbits - le32_to_cpu(bm_lock->id1.bitmap1.i_used); | |
1663 | ||
1664 | buf->f_type = OCFS2_SUPER_MAGIC; | |
726c3342 | 1665 | buf->f_bsize = dentry->d_sb->s_blocksize; |
ccd979bd MF |
1666 | buf->f_namelen = OCFS2_MAX_FILENAME_LEN; |
1667 | buf->f_blocks = ((sector_t) numbits) * | |
1668 | (osb->s_clustersize >> osb->sb->s_blocksize_bits); | |
1669 | buf->f_bfree = ((sector_t) freebits) * | |
1670 | (osb->s_clustersize >> osb->sb->s_blocksize_bits); | |
1671 | buf->f_bavail = buf->f_bfree; | |
1672 | buf->f_files = numbits; | |
1673 | buf->f_ffree = freebits; | |
837711f8 CL |
1674 | buf->f_fsid.val[0] = crc32_le(0, osb->uuid_str, OCFS2_VOL_UUID_LEN) |
1675 | & 0xFFFFFFFFUL; | |
1676 | buf->f_fsid.val[1] = crc32_le(0, osb->uuid_str + OCFS2_VOL_UUID_LEN, | |
1677 | OCFS2_VOL_UUID_LEN) & 0xFFFFFFFFUL; | |
ccd979bd MF |
1678 | |
1679 | brelse(bh); | |
1680 | ||
e63aecb6 | 1681 | ocfs2_inode_unlock(inode, 0); |
ccd979bd MF |
1682 | status = 0; |
1683 | bail: | |
1684 | if (inode) | |
1685 | iput(inode); | |
1686 | ||
1687 | mlog_exit(status); | |
1688 | ||
1689 | return status; | |
1690 | } | |
1691 | ||
51cc5068 | 1692 | static void ocfs2_inode_init_once(void *data) |
ccd979bd MF |
1693 | { |
1694 | struct ocfs2_inode_info *oi = data; | |
1695 | ||
a35afb83 CL |
1696 | oi->ip_flags = 0; |
1697 | oi->ip_open_count = 0; | |
1698 | spin_lock_init(&oi->ip_lock); | |
1699 | ocfs2_extent_map_init(&oi->vfs_inode); | |
1700 | INIT_LIST_HEAD(&oi->ip_io_markers); | |
a35afb83 | 1701 | oi->ip_dir_start_lookup = 0; |
ccd979bd | 1702 | |
a35afb83 | 1703 | init_rwsem(&oi->ip_alloc_sem); |
cf1d6c76 | 1704 | init_rwsem(&oi->ip_xattr_sem); |
a35afb83 | 1705 | mutex_init(&oi->ip_io_mutex); |
ccd979bd | 1706 | |
a35afb83 CL |
1707 | oi->ip_blkno = 0ULL; |
1708 | oi->ip_clusters = 0; | |
ccd979bd | 1709 | |
a35afb83 | 1710 | ocfs2_lock_res_init_once(&oi->ip_rw_lockres); |
e63aecb6 | 1711 | ocfs2_lock_res_init_once(&oi->ip_inode_lockres); |
a35afb83 | 1712 | ocfs2_lock_res_init_once(&oi->ip_open_lockres); |
ccd979bd | 1713 | |
8cb471e8 | 1714 | ocfs2_metadata_cache_init(INODE_CACHE(&oi->vfs_inode), |
6e5a3d75 | 1715 | &ocfs2_inode_caching_ops); |
ccd979bd | 1716 | |
a35afb83 | 1717 | inode_init_once(&oi->vfs_inode); |
ccd979bd MF |
1718 | } |
1719 | ||
1720 | static int ocfs2_initialize_mem_caches(void) | |
1721 | { | |
1722 | ocfs2_inode_cachep = kmem_cache_create("ocfs2_inode_cache", | |
fffb60f9 PJ |
1723 | sizeof(struct ocfs2_inode_info), |
1724 | 0, | |
1725 | (SLAB_HWCACHE_ALIGN|SLAB_RECLAIM_ACCOUNT| | |
1726 | SLAB_MEM_SPREAD), | |
20c2df83 | 1727 | ocfs2_inode_init_once); |
9e33d69f JK |
1728 | ocfs2_dquot_cachep = kmem_cache_create("ocfs2_dquot_cache", |
1729 | sizeof(struct ocfs2_dquot), | |
1730 | 0, | |
1731 | (SLAB_HWCACHE_ALIGN|SLAB_RECLAIM_ACCOUNT| | |
1732 | SLAB_MEM_SPREAD), | |
1733 | NULL); | |
1734 | ocfs2_qf_chunk_cachep = kmem_cache_create("ocfs2_qf_chunk_cache", | |
1735 | sizeof(struct ocfs2_quota_chunk), | |
1736 | 0, | |
1737 | (SLAB_RECLAIM_ACCOUNT|SLAB_MEM_SPREAD), | |
1738 | NULL); | |
1739 | if (!ocfs2_inode_cachep || !ocfs2_dquot_cachep || | |
1740 | !ocfs2_qf_chunk_cachep) { | |
1741 | if (ocfs2_inode_cachep) | |
1742 | kmem_cache_destroy(ocfs2_inode_cachep); | |
1743 | if (ocfs2_dquot_cachep) | |
1744 | kmem_cache_destroy(ocfs2_dquot_cachep); | |
1745 | if (ocfs2_qf_chunk_cachep) | |
1746 | kmem_cache_destroy(ocfs2_qf_chunk_cachep); | |
ccd979bd | 1747 | return -ENOMEM; |
9e33d69f | 1748 | } |
ccd979bd | 1749 | |
ccd979bd MF |
1750 | return 0; |
1751 | } | |
1752 | ||
1753 | static void ocfs2_free_mem_caches(void) | |
1754 | { | |
1755 | if (ocfs2_inode_cachep) | |
1756 | kmem_cache_destroy(ocfs2_inode_cachep); | |
ccd979bd | 1757 | ocfs2_inode_cachep = NULL; |
9e33d69f JK |
1758 | |
1759 | if (ocfs2_dquot_cachep) | |
1760 | kmem_cache_destroy(ocfs2_dquot_cachep); | |
1761 | ocfs2_dquot_cachep = NULL; | |
1762 | ||
1763 | if (ocfs2_qf_chunk_cachep) | |
1764 | kmem_cache_destroy(ocfs2_qf_chunk_cachep); | |
1765 | ocfs2_qf_chunk_cachep = NULL; | |
ccd979bd MF |
1766 | } |
1767 | ||
1768 | static int ocfs2_get_sector(struct super_block *sb, | |
1769 | struct buffer_head **bh, | |
1770 | int block, | |
1771 | int sect_size) | |
1772 | { | |
1773 | if (!sb_set_blocksize(sb, sect_size)) { | |
1774 | mlog(ML_ERROR, "unable to set blocksize\n"); | |
1775 | return -EIO; | |
1776 | } | |
1777 | ||
1778 | *bh = sb_getblk(sb, block); | |
1779 | if (!*bh) { | |
1780 | mlog_errno(-EIO); | |
1781 | return -EIO; | |
1782 | } | |
1783 | lock_buffer(*bh); | |
1784 | if (!buffer_dirty(*bh)) | |
1785 | clear_buffer_uptodate(*bh); | |
1786 | unlock_buffer(*bh); | |
1787 | ll_rw_block(READ, 1, bh); | |
1788 | wait_on_buffer(*bh); | |
28d57d43 | 1789 | if (!buffer_uptodate(*bh)) { |
1790 | mlog_errno(-EIO); | |
1791 | brelse(*bh); | |
1792 | *bh = NULL; | |
1793 | return -EIO; | |
1794 | } | |
1795 | ||
ccd979bd MF |
1796 | return 0; |
1797 | } | |
1798 | ||
ccd979bd MF |
1799 | static int ocfs2_mount_volume(struct super_block *sb) |
1800 | { | |
1801 | int status = 0; | |
1802 | int unlock_super = 0; | |
1803 | struct ocfs2_super *osb = OCFS2_SB(sb); | |
1804 | ||
1805 | mlog_entry_void(); | |
1806 | ||
1807 | if (ocfs2_is_hard_readonly(osb)) | |
1808 | goto leave; | |
1809 | ||
ccd979bd MF |
1810 | status = ocfs2_dlm_init(osb); |
1811 | if (status < 0) { | |
1812 | mlog_errno(status); | |
1813 | goto leave; | |
1814 | } | |
1815 | ||
ccd979bd MF |
1816 | status = ocfs2_super_lock(osb, 1); |
1817 | if (status < 0) { | |
1818 | mlog_errno(status); | |
1819 | goto leave; | |
1820 | } | |
1821 | unlock_super = 1; | |
1822 | ||
1823 | /* This will load up the node map and add ourselves to it. */ | |
1824 | status = ocfs2_find_slot(osb); | |
1825 | if (status < 0) { | |
1826 | mlog_errno(status); | |
1827 | goto leave; | |
1828 | } | |
1829 | ||
ccd979bd MF |
1830 | /* load all node-local system inodes */ |
1831 | status = ocfs2_init_local_system_inodes(osb); | |
1832 | if (status < 0) { | |
1833 | mlog_errno(status); | |
1834 | goto leave; | |
1835 | } | |
1836 | ||
1837 | status = ocfs2_check_volume(osb); | |
1838 | if (status < 0) { | |
1839 | mlog_errno(status); | |
1840 | goto leave; | |
1841 | } | |
1842 | ||
1843 | status = ocfs2_truncate_log_init(osb); | |
06c59bb8 | 1844 | if (status < 0) |
ccd979bd | 1845 | mlog_errno(status); |
c271c5c2 | 1846 | |
ccd979bd MF |
1847 | leave: |
1848 | if (unlock_super) | |
1849 | ocfs2_super_unlock(osb, 1); | |
1850 | ||
1851 | mlog_exit(status); | |
1852 | return status; | |
1853 | } | |
1854 | ||
ccd979bd MF |
1855 | static void ocfs2_dismount_volume(struct super_block *sb, int mnt_err) |
1856 | { | |
286eaa95 | 1857 | int tmp, hangup_needed = 0; |
ccd979bd | 1858 | struct ocfs2_super *osb = NULL; |
c271c5c2 | 1859 | char nodestr[8]; |
ccd979bd MF |
1860 | |
1861 | mlog_entry("(0x%p)\n", sb); | |
1862 | ||
1863 | BUG_ON(!sb); | |
1864 | osb = OCFS2_SB(sb); | |
1865 | BUG_ON(!osb); | |
1866 | ||
50397507 SM |
1867 | debugfs_remove(osb->osb_ctxt); |
1868 | ||
f7b1aa69 JK |
1869 | /* |
1870 | * Flush inode dropping work queue so that deletes are | |
1871 | * performed while the filesystem is still working | |
1872 | */ | |
1873 | ocfs2_drop_all_dl_inodes(osb); | |
1874 | ||
692684e1 SM |
1875 | /* Orphan scan should be stopped as early as possible */ |
1876 | ocfs2_orphan_scan_stop(osb); | |
1877 | ||
19ece546 JK |
1878 | ocfs2_disable_quotas(osb); |
1879 | ||
ccd979bd MF |
1880 | ocfs2_shutdown_local_alloc(osb); |
1881 | ||
1882 | ocfs2_truncate_log_shutdown(osb); | |
1883 | ||
553abd04 JB |
1884 | /* This will disable recovery and flush any recovery work. */ |
1885 | ocfs2_recovery_exit(osb); | |
ccd979bd MF |
1886 | |
1887 | ocfs2_journal_shutdown(osb); | |
1888 | ||
1889 | ocfs2_sync_blockdev(sb); | |
1890 | ||
374a263e TM |
1891 | ocfs2_purge_refcount_trees(osb); |
1892 | ||
4670c46d JB |
1893 | /* No cluster connection means we've failed during mount, so skip |
1894 | * all the steps which depended on that to complete. */ | |
1895 | if (osb->cconn) { | |
ccd979bd MF |
1896 | tmp = ocfs2_super_lock(osb, 1); |
1897 | if (tmp < 0) { | |
1898 | mlog_errno(tmp); | |
1899 | return; | |
1900 | } | |
19b613d4 | 1901 | } |
ccd979bd | 1902 | |
19b613d4 MF |
1903 | if (osb->slot_num != OCFS2_INVALID_SLOT) |
1904 | ocfs2_put_slot(osb); | |
ccd979bd | 1905 | |
4670c46d | 1906 | if (osb->cconn) |
ccd979bd | 1907 | ocfs2_super_unlock(osb, 1); |
ccd979bd MF |
1908 | |
1909 | ocfs2_release_system_inodes(osb); | |
1910 | ||
6953b4c0 | 1911 | /* |
6953b4c0 JB |
1912 | * If we're dismounting due to mount error, mount.ocfs2 will clean |
1913 | * up heartbeat. If we're a local mount, there is no heartbeat. | |
1914 | * If we failed before we got a uuid_str yet, we can't stop | |
1915 | * heartbeat. Otherwise, do it. | |
1916 | */ | |
1917 | if (!mnt_err && !ocfs2_mount_local(osb) && osb->uuid_str) | |
286eaa95 JB |
1918 | hangup_needed = 1; |
1919 | ||
1920 | if (osb->cconn) | |
1921 | ocfs2_dlm_shutdown(osb, hangup_needed); | |
1922 | ||
73be192b | 1923 | ocfs2_blockcheck_stats_debugfs_remove(&osb->osb_ecc_stats); |
286eaa95 JB |
1924 | debugfs_remove(osb->osb_debug_root); |
1925 | ||
1926 | if (hangup_needed) | |
6953b4c0 | 1927 | ocfs2_cluster_hangup(osb->uuid_str, strlen(osb->uuid_str)); |
ccd979bd MF |
1928 | |
1929 | atomic_set(&osb->vol_state, VOLUME_DISMOUNTED); | |
1930 | ||
c271c5c2 SM |
1931 | if (ocfs2_mount_local(osb)) |
1932 | snprintf(nodestr, sizeof(nodestr), "local"); | |
1933 | else | |
19fdb624 | 1934 | snprintf(nodestr, sizeof(nodestr), "%u", osb->node_num); |
c271c5c2 SM |
1935 | |
1936 | printk(KERN_INFO "ocfs2: Unmounting device (%s) on (node %s)\n", | |
1937 | osb->dev_str, nodestr); | |
ccd979bd MF |
1938 | |
1939 | ocfs2_delete_osb(osb); | |
1940 | kfree(osb); | |
1941 | sb->s_dev = 0; | |
1942 | sb->s_fs_info = NULL; | |
1943 | } | |
1944 | ||
1945 | static int ocfs2_setup_osb_uuid(struct ocfs2_super *osb, const unsigned char *uuid, | |
1946 | unsigned uuid_bytes) | |
1947 | { | |
1948 | int i, ret; | |
1949 | char *ptr; | |
1950 | ||
1951 | BUG_ON(uuid_bytes != OCFS2_VOL_UUID_LEN); | |
1952 | ||
cd861280 | 1953 | osb->uuid_str = kzalloc(OCFS2_VOL_UUID_LEN * 2 + 1, GFP_KERNEL); |
ccd979bd MF |
1954 | if (osb->uuid_str == NULL) |
1955 | return -ENOMEM; | |
1956 | ||
ccd979bd MF |
1957 | for (i = 0, ptr = osb->uuid_str; i < OCFS2_VOL_UUID_LEN; i++) { |
1958 | /* print with null */ | |
1959 | ret = snprintf(ptr, 3, "%02X", uuid[i]); | |
1960 | if (ret != 2) /* drop super cleans up */ | |
1961 | return -EINVAL; | |
1962 | /* then only advance past the last char */ | |
1963 | ptr += 2; | |
1964 | } | |
1965 | ||
1966 | return 0; | |
1967 | } | |
1968 | ||
1969 | static int ocfs2_initialize_super(struct super_block *sb, | |
1970 | struct buffer_head *bh, | |
73be192b JB |
1971 | int sector_size, |
1972 | struct ocfs2_blockcheck_stats *stats) | |
ccd979bd | 1973 | { |
bddb8eb3 | 1974 | int status; |
5a254031 MF |
1975 | int i, cbits, bbits; |
1976 | struct ocfs2_dinode *di = (struct ocfs2_dinode *)bh->b_data; | |
ccd979bd | 1977 | struct inode *inode = NULL; |
ccd979bd MF |
1978 | struct ocfs2_journal *journal; |
1979 | __le32 uuid_net_key; | |
1980 | struct ocfs2_super *osb; | |
1981 | ||
1982 | mlog_entry_void(); | |
1983 | ||
cd861280 | 1984 | osb = kzalloc(sizeof(struct ocfs2_super), GFP_KERNEL); |
ccd979bd MF |
1985 | if (!osb) { |
1986 | status = -ENOMEM; | |
1987 | mlog_errno(status); | |
1988 | goto bail; | |
1989 | } | |
1990 | ||
1991 | sb->s_fs_info = osb; | |
1992 | sb->s_op = &ocfs2_sops; | |
1993 | sb->s_export_op = &ocfs2_export_ops; | |
19ece546 JK |
1994 | sb->s_qcop = &ocfs2_quotactl_ops; |
1995 | sb->dq_op = &ocfs2_quota_operations; | |
cf1d6c76 | 1996 | sb->s_xattr = ocfs2_xattr_handlers; |
e0dceaf0 | 1997 | sb->s_time_gran = 1; |
ccd979bd MF |
1998 | sb->s_flags |= MS_NOATIME; |
1999 | /* this is needed to support O_LARGEFILE */ | |
5a254031 MF |
2000 | cbits = le32_to_cpu(di->id2.i_super.s_clustersize_bits); |
2001 | bbits = le32_to_cpu(di->id2.i_super.s_blocksize_bits); | |
2002 | sb->s_maxbytes = ocfs2_max_file_offset(bbits, cbits); | |
ccd979bd | 2003 | |
9b7895ef MF |
2004 | osb->osb_dx_mask = (1 << (cbits - bbits)) - 1; |
2005 | ||
2006 | for (i = 0; i < 3; i++) | |
2007 | osb->osb_dx_seed[i] = le32_to_cpu(di->id2.i_super.s_dx_seed[i]); | |
2008 | osb->osb_dx_seed[3] = le32_to_cpu(di->id2.i_super.s_uuid_hash); | |
2009 | ||
ccd979bd MF |
2010 | osb->sb = sb; |
2011 | /* Save off for ocfs2_rw_direct */ | |
2012 | osb->s_sectsize_bits = blksize_bits(sector_size); | |
ebdec83b | 2013 | BUG_ON(!osb->s_sectsize_bits); |
ccd979bd | 2014 | |
34d024f8 MF |
2015 | spin_lock_init(&osb->dc_task_lock); |
2016 | init_waitqueue_head(&osb->dc_event); | |
2017 | osb->dc_work_sequence = 0; | |
2018 | osb->dc_wake_sequence = 0; | |
ccd979bd MF |
2019 | INIT_LIST_HEAD(&osb->blocked_lock_list); |
2020 | osb->blocked_lock_count = 0; | |
ccd979bd | 2021 | spin_lock_init(&osb->osb_lock); |
c8b9cf9a | 2022 | spin_lock_init(&osb->osb_xattr_lock); |
b89c5428 | 2023 | ocfs2_init_steal_slots(osb); |
ccd979bd MF |
2024 | |
2025 | atomic_set(&osb->alloc_stats.moves, 0); | |
2026 | atomic_set(&osb->alloc_stats.local_data, 0); | |
2027 | atomic_set(&osb->alloc_stats.bitmap_data, 0); | |
2028 | atomic_set(&osb->alloc_stats.bg_allocs, 0); | |
2029 | atomic_set(&osb->alloc_stats.bg_extends, 0); | |
2030 | ||
73be192b JB |
2031 | /* Copy the blockcheck stats from the superblock probe */ |
2032 | osb->osb_ecc_stats = *stats; | |
2033 | ||
ccd979bd MF |
2034 | ocfs2_init_node_maps(osb); |
2035 | ||
2036 | snprintf(osb->dev_str, sizeof(osb->dev_str), "%u,%u", | |
2037 | MAJOR(osb->sb->s_dev), MINOR(osb->sb->s_dev)); | |
2038 | ||
8b712cd5 JM |
2039 | ocfs2_orphan_scan_init(osb); |
2040 | ||
553abd04 JB |
2041 | status = ocfs2_recovery_init(osb); |
2042 | if (status) { | |
2043 | mlog(ML_ERROR, "Unable to initialize recovery state\n"); | |
2044 | mlog_errno(status); | |
2045 | goto bail; | |
2046 | } | |
ccd979bd MF |
2047 | |
2048 | init_waitqueue_head(&osb->checkpoint_event); | |
2049 | atomic_set(&osb->needs_checkpoint, 0); | |
2050 | ||
7f1a37e3 TY |
2051 | osb->s_atime_quantum = OCFS2_DEFAULT_ATIME_QUANTUM; |
2052 | ||
ccd979bd MF |
2053 | osb->slot_num = OCFS2_INVALID_SLOT; |
2054 | ||
8154da3d TY |
2055 | osb->s_xattr_inline_size = le16_to_cpu( |
2056 | di->id2.i_super.s_xattr_inline_size); | |
fdd77704 | 2057 | |
ccd979bd MF |
2058 | osb->local_alloc_state = OCFS2_LA_UNUSED; |
2059 | osb->local_alloc_bh = NULL; | |
9c7af40b | 2060 | INIT_DELAYED_WORK(&osb->la_enable_wq, ocfs2_la_enable_worker); |
ccd979bd | 2061 | |
ccd979bd MF |
2062 | init_waitqueue_head(&osb->osb_mount_event); |
2063 | ||
d02f00cc MF |
2064 | status = ocfs2_resmap_init(osb, &osb->osb_la_resmap); |
2065 | if (status) { | |
2066 | mlog_errno(status); | |
2067 | goto bail; | |
2068 | } | |
2069 | ||
ccd979bd MF |
2070 | osb->vol_label = kmalloc(OCFS2_MAX_VOL_LABEL_LEN, GFP_KERNEL); |
2071 | if (!osb->vol_label) { | |
2072 | mlog(ML_ERROR, "unable to alloc vol label\n"); | |
2073 | status = -ENOMEM; | |
2074 | goto bail; | |
2075 | } | |
2076 | ||
ccd979bd MF |
2077 | osb->max_slots = le16_to_cpu(di->id2.i_super.s_max_slots); |
2078 | if (osb->max_slots > OCFS2_MAX_SLOTS || osb->max_slots == 0) { | |
2079 | mlog(ML_ERROR, "Invalid number of node slots (%u)\n", | |
2080 | osb->max_slots); | |
2081 | status = -EINVAL; | |
2082 | goto bail; | |
2083 | } | |
781ee3e2 | 2084 | mlog(0, "max_slots for this device: %u\n", osb->max_slots); |
ccd979bd | 2085 | |
539d8264 SM |
2086 | osb->slot_recovery_generations = |
2087 | kcalloc(osb->max_slots, sizeof(*osb->slot_recovery_generations), | |
2088 | GFP_KERNEL); | |
2089 | if (!osb->slot_recovery_generations) { | |
2090 | status = -ENOMEM; | |
2091 | mlog_errno(status); | |
2092 | goto bail; | |
2093 | } | |
2094 | ||
b4df6ed8 MF |
2095 | init_waitqueue_head(&osb->osb_wipe_event); |
2096 | osb->osb_orphan_wipes = kcalloc(osb->max_slots, | |
2097 | sizeof(*osb->osb_orphan_wipes), | |
2098 | GFP_KERNEL); | |
2099 | if (!osb->osb_orphan_wipes) { | |
2100 | status = -ENOMEM; | |
2101 | mlog_errno(status); | |
2102 | goto bail; | |
2103 | } | |
2104 | ||
374a263e TM |
2105 | osb->osb_rf_lock_tree = RB_ROOT; |
2106 | ||
ccd979bd MF |
2107 | osb->s_feature_compat = |
2108 | le32_to_cpu(OCFS2_RAW_SB(di)->s_feature_compat); | |
2109 | osb->s_feature_ro_compat = | |
2110 | le32_to_cpu(OCFS2_RAW_SB(di)->s_feature_ro_compat); | |
2111 | osb->s_feature_incompat = | |
2112 | le32_to_cpu(OCFS2_RAW_SB(di)->s_feature_incompat); | |
2113 | ||
2114 | if ((i = OCFS2_HAS_INCOMPAT_FEATURE(osb->sb, ~OCFS2_FEATURE_INCOMPAT_SUPP))) { | |
2115 | mlog(ML_ERROR, "couldn't mount because of unsupported " | |
2116 | "optional features (%x).\n", i); | |
2117 | status = -EINVAL; | |
2118 | goto bail; | |
2119 | } | |
2120 | if (!(osb->sb->s_flags & MS_RDONLY) && | |
2121 | (i = OCFS2_HAS_RO_COMPAT_FEATURE(osb->sb, ~OCFS2_FEATURE_RO_COMPAT_SUPP))) { | |
2122 | mlog(ML_ERROR, "couldn't mount RDWR because of " | |
2123 | "unsupported optional features (%x).\n", i); | |
2124 | status = -EINVAL; | |
2125 | goto bail; | |
2126 | } | |
2127 | ||
b61817e1 JB |
2128 | if (ocfs2_userspace_stack(osb)) { |
2129 | memcpy(osb->osb_cluster_stack, | |
2130 | OCFS2_RAW_SB(di)->s_cluster_info.ci_stack, | |
2131 | OCFS2_STACK_LABEL_LEN); | |
2132 | osb->osb_cluster_stack[OCFS2_STACK_LABEL_LEN] = '\0'; | |
2133 | if (strlen(osb->osb_cluster_stack) != OCFS2_STACK_LABEL_LEN) { | |
2134 | mlog(ML_ERROR, | |
2135 | "couldn't mount because of an invalid " | |
2136 | "cluster stack label (%s) \n", | |
2137 | osb->osb_cluster_stack); | |
2138 | status = -EINVAL; | |
2139 | goto bail; | |
2140 | } | |
2141 | } else { | |
2142 | /* The empty string is identical with classic tools that | |
2143 | * don't know about s_cluster_info. */ | |
2144 | osb->osb_cluster_stack[0] = '\0'; | |
2145 | } | |
2146 | ||
ccd979bd MF |
2147 | get_random_bytes(&osb->s_next_generation, sizeof(u32)); |
2148 | ||
2149 | /* FIXME | |
2150 | * This should be done in ocfs2_journal_init(), but unknown | |
2151 | * ordering issues will cause the filesystem to crash. | |
2152 | * If anyone wants to figure out what part of the code | |
2153 | * refers to osb->journal before ocfs2_journal_init() is run, | |
2154 | * be my guest. | |
2155 | */ | |
2156 | /* initialize our journal structure */ | |
2157 | ||
cd861280 | 2158 | journal = kzalloc(sizeof(struct ocfs2_journal), GFP_KERNEL); |
ccd979bd MF |
2159 | if (!journal) { |
2160 | mlog(ML_ERROR, "unable to alloc journal\n"); | |
2161 | status = -ENOMEM; | |
2162 | goto bail; | |
2163 | } | |
2164 | osb->journal = journal; | |
2165 | journal->j_osb = osb; | |
2166 | ||
2167 | atomic_set(&journal->j_num_trans, 0); | |
2168 | init_rwsem(&journal->j_trans_barrier); | |
2169 | init_waitqueue_head(&journal->j_checkpointed); | |
2170 | spin_lock_init(&journal->j_lock); | |
2171 | journal->j_trans_id = (unsigned long) 1; | |
2172 | INIT_LIST_HEAD(&journal->j_la_cleanups); | |
c4028958 | 2173 | INIT_WORK(&journal->j_recovery_work, ocfs2_complete_recovery); |
ccd979bd MF |
2174 | journal->j_state = OCFS2_JOURNAL_FREE; |
2175 | ||
ea455f8a JK |
2176 | INIT_WORK(&osb->dentry_lock_work, ocfs2_drop_dl_inodes); |
2177 | osb->dentry_lock_list = NULL; | |
2178 | ||
ccd979bd MF |
2179 | /* get some pseudo constants for clustersize bits */ |
2180 | osb->s_clustersize_bits = | |
2181 | le32_to_cpu(di->id2.i_super.s_clustersize_bits); | |
2182 | osb->s_clustersize = 1 << osb->s_clustersize_bits; | |
2183 | mlog(0, "clusterbits=%d\n", osb->s_clustersize_bits); | |
2184 | ||
2185 | if (osb->s_clustersize < OCFS2_MIN_CLUSTERSIZE || | |
2186 | osb->s_clustersize > OCFS2_MAX_CLUSTERSIZE) { | |
2187 | mlog(ML_ERROR, "Volume has invalid cluster size (%d)\n", | |
2188 | osb->s_clustersize); | |
2189 | status = -EINVAL; | |
2190 | goto bail; | |
2191 | } | |
2192 | ||
2193 | if (ocfs2_clusters_to_blocks(osb->sb, le32_to_cpu(di->i_clusters) - 1) | |
2194 | > (u32)~0UL) { | |
2195 | mlog(ML_ERROR, "Volume might try to write to blocks beyond " | |
2196 | "what jbd can address in 32 bits.\n"); | |
2197 | status = -EINVAL; | |
2198 | goto bail; | |
2199 | } | |
2200 | ||
2201 | if (ocfs2_setup_osb_uuid(osb, di->id2.i_super.s_uuid, | |
2202 | sizeof(di->id2.i_super.s_uuid))) { | |
2203 | mlog(ML_ERROR, "Out of memory trying to setup our uuid.\n"); | |
2204 | status = -ENOMEM; | |
2205 | goto bail; | |
2206 | } | |
2207 | ||
78427043 | 2208 | memcpy(&uuid_net_key, di->id2.i_super.s_uuid, sizeof(uuid_net_key)); |
ccd979bd MF |
2209 | |
2210 | strncpy(osb->vol_label, di->id2.i_super.s_label, 63); | |
2211 | osb->vol_label[63] = '\0'; | |
2212 | osb->root_blkno = le64_to_cpu(di->id2.i_super.s_root_blkno); | |
2213 | osb->system_dir_blkno = le64_to_cpu(di->id2.i_super.s_system_dir_blkno); | |
2214 | osb->first_cluster_group_blkno = | |
2215 | le64_to_cpu(di->id2.i_super.s_first_cluster_group); | |
2216 | osb->fs_generation = le32_to_cpu(di->i_fs_generation); | |
cf1d6c76 | 2217 | osb->uuid_hash = le32_to_cpu(di->id2.i_super.s_uuid_hash); |
ccd979bd MF |
2218 | mlog(0, "vol_label: %s\n", osb->vol_label); |
2219 | mlog(0, "uuid: %s\n", osb->uuid_str); | |
b0697053 MF |
2220 | mlog(0, "root_blkno=%llu, system_dir_blkno=%llu\n", |
2221 | (unsigned long long)osb->root_blkno, | |
2222 | (unsigned long long)osb->system_dir_blkno); | |
ccd979bd MF |
2223 | |
2224 | osb->osb_dlm_debug = ocfs2_new_dlm_debug(); | |
2225 | if (!osb->osb_dlm_debug) { | |
2226 | status = -ENOMEM; | |
2227 | mlog_errno(status); | |
2228 | goto bail; | |
2229 | } | |
2230 | ||
2231 | atomic_set(&osb->vol_state, VOLUME_INIT); | |
2232 | ||
2233 | /* load root, system_dir, and all global system inodes */ | |
2234 | status = ocfs2_init_global_system_inodes(osb); | |
2235 | if (status < 0) { | |
2236 | mlog_errno(status); | |
2237 | goto bail; | |
2238 | } | |
2239 | ||
2240 | /* | |
2241 | * global bitmap | |
2242 | */ | |
2243 | inode = ocfs2_get_system_file_inode(osb, GLOBAL_BITMAP_SYSTEM_INODE, | |
2244 | OCFS2_INVALID_SLOT); | |
2245 | if (!inode) { | |
2246 | status = -EINVAL; | |
2247 | mlog_errno(status); | |
2248 | goto bail; | |
2249 | } | |
2250 | ||
2251 | osb->bitmap_blkno = OCFS2_I(inode)->ip_blkno; | |
ccd979bd | 2252 | iput(inode); |
ccd979bd | 2253 | |
e9d578a8 | 2254 | osb->bitmap_cpg = ocfs2_group_bitmap_size(sb) * 8; |
ccd979bd MF |
2255 | |
2256 | status = ocfs2_init_slot_info(osb); | |
2257 | if (status < 0) { | |
2258 | mlog_errno(status); | |
2259 | goto bail; | |
2260 | } | |
2261 | ||
ccd979bd MF |
2262 | bail: |
2263 | mlog_exit(status); | |
2264 | return status; | |
2265 | } | |
2266 | ||
2267 | /* | |
2268 | * will return: -EAGAIN if it is ok to keep searching for superblocks | |
2269 | * -EINVAL if there is a bad superblock | |
2270 | * 0 on success | |
2271 | */ | |
2272 | static int ocfs2_verify_volume(struct ocfs2_dinode *di, | |
2273 | struct buffer_head *bh, | |
73be192b JB |
2274 | u32 blksz, |
2275 | struct ocfs2_blockcheck_stats *stats) | |
ccd979bd MF |
2276 | { |
2277 | int status = -EAGAIN; | |
2278 | ||
2279 | mlog_entry_void(); | |
2280 | ||
2281 | if (memcmp(di->i_signature, OCFS2_SUPER_BLOCK_SIGNATURE, | |
2282 | strlen(OCFS2_SUPER_BLOCK_SIGNATURE)) == 0) { | |
d030cc97 JB |
2283 | /* We have to do a raw check of the feature here */ |
2284 | if (le32_to_cpu(di->id2.i_super.s_feature_incompat) & | |
2285 | OCFS2_FEATURE_INCOMPAT_META_ECC) { | |
2286 | status = ocfs2_block_check_validate(bh->b_data, | |
2287 | bh->b_size, | |
73be192b JB |
2288 | &di->i_check, |
2289 | stats); | |
d030cc97 JB |
2290 | if (status) |
2291 | goto out; | |
2292 | } | |
ccd979bd MF |
2293 | status = -EINVAL; |
2294 | if ((1 << le32_to_cpu(di->id2.i_super.s_blocksize_bits)) != blksz) { | |
2295 | mlog(ML_ERROR, "found superblock with incorrect block " | |
2296 | "size: found %u, should be %u\n", | |
2297 | 1 << le32_to_cpu(di->id2.i_super.s_blocksize_bits), | |
2298 | blksz); | |
2299 | } else if (le16_to_cpu(di->id2.i_super.s_major_rev_level) != | |
2300 | OCFS2_MAJOR_REV_LEVEL || | |
2301 | le16_to_cpu(di->id2.i_super.s_minor_rev_level) != | |
2302 | OCFS2_MINOR_REV_LEVEL) { | |
2303 | mlog(ML_ERROR, "found superblock with bad version: " | |
2304 | "found %u.%u, should be %u.%u\n", | |
2305 | le16_to_cpu(di->id2.i_super.s_major_rev_level), | |
2306 | le16_to_cpu(di->id2.i_super.s_minor_rev_level), | |
2307 | OCFS2_MAJOR_REV_LEVEL, | |
2308 | OCFS2_MINOR_REV_LEVEL); | |
2309 | } else if (bh->b_blocknr != le64_to_cpu(di->i_blkno)) { | |
2310 | mlog(ML_ERROR, "bad block number on superblock: " | |
b0697053 | 2311 | "found %llu, should be %llu\n", |
1ca1a111 | 2312 | (unsigned long long)le64_to_cpu(di->i_blkno), |
b0697053 | 2313 | (unsigned long long)bh->b_blocknr); |
ccd979bd MF |
2314 | } else if (le32_to_cpu(di->id2.i_super.s_clustersize_bits) < 12 || |
2315 | le32_to_cpu(di->id2.i_super.s_clustersize_bits) > 20) { | |
2316 | mlog(ML_ERROR, "bad cluster size found: %u\n", | |
2317 | 1 << le32_to_cpu(di->id2.i_super.s_clustersize_bits)); | |
2318 | } else if (!le64_to_cpu(di->id2.i_super.s_root_blkno)) { | |
2319 | mlog(ML_ERROR, "bad root_blkno: 0\n"); | |
2320 | } else if (!le64_to_cpu(di->id2.i_super.s_system_dir_blkno)) { | |
2321 | mlog(ML_ERROR, "bad system_dir_blkno: 0\n"); | |
2322 | } else if (le16_to_cpu(di->id2.i_super.s_max_slots) > OCFS2_MAX_SLOTS) { | |
2323 | mlog(ML_ERROR, | |
2324 | "Superblock slots found greater than file system " | |
2325 | "maximum: found %u, max %u\n", | |
2326 | le16_to_cpu(di->id2.i_super.s_max_slots), | |
2327 | OCFS2_MAX_SLOTS); | |
2328 | } else { | |
2329 | /* found it! */ | |
2330 | status = 0; | |
2331 | } | |
2332 | } | |
2333 | ||
d030cc97 | 2334 | out: |
ccd979bd MF |
2335 | mlog_exit(status); |
2336 | return status; | |
2337 | } | |
2338 | ||
2339 | static int ocfs2_check_volume(struct ocfs2_super *osb) | |
2340 | { | |
bddb8eb3 | 2341 | int status; |
ccd979bd | 2342 | int dirty; |
c271c5c2 | 2343 | int local; |
ccd979bd MF |
2344 | struct ocfs2_dinode *local_alloc = NULL; /* only used if we |
2345 | * recover | |
2346 | * ourselves. */ | |
2347 | ||
2348 | mlog_entry_void(); | |
2349 | ||
2350 | /* Init our journal object. */ | |
2351 | status = ocfs2_journal_init(osb->journal, &dirty); | |
2352 | if (status < 0) { | |
2353 | mlog(ML_ERROR, "Could not initialize journal!\n"); | |
2354 | goto finally; | |
2355 | } | |
2356 | ||
2357 | /* If the journal was unmounted cleanly then we don't want to | |
2358 | * recover anything. Otherwise, journal_load will do that | |
2359 | * dirty work for us :) */ | |
2360 | if (!dirty) { | |
2361 | status = ocfs2_journal_wipe(osb->journal, 0); | |
2362 | if (status < 0) { | |
2363 | mlog_errno(status); | |
2364 | goto finally; | |
2365 | } | |
2366 | } else { | |
2367 | mlog(ML_NOTICE, "File system was not unmounted cleanly, " | |
2368 | "recovering volume.\n"); | |
2369 | } | |
2370 | ||
c271c5c2 SM |
2371 | local = ocfs2_mount_local(osb); |
2372 | ||
ccd979bd | 2373 | /* will play back anything left in the journal. */ |
539d8264 | 2374 | status = ocfs2_journal_load(osb->journal, local, dirty); |
01af4820 WW |
2375 | if (status < 0) { |
2376 | mlog(ML_ERROR, "ocfs2 journal load failed! %d\n", status); | |
2377 | goto finally; | |
2378 | } | |
ccd979bd MF |
2379 | |
2380 | if (dirty) { | |
2381 | /* recover my local alloc if we didn't unmount cleanly. */ | |
2382 | status = ocfs2_begin_local_alloc_recovery(osb, | |
2383 | osb->slot_num, | |
2384 | &local_alloc); | |
2385 | if (status < 0) { | |
2386 | mlog_errno(status); | |
2387 | goto finally; | |
2388 | } | |
2389 | /* we complete the recovery process after we've marked | |
2390 | * ourselves as mounted. */ | |
2391 | } | |
2392 | ||
2393 | mlog(0, "Journal loaded.\n"); | |
2394 | ||
2395 | status = ocfs2_load_local_alloc(osb); | |
2396 | if (status < 0) { | |
2397 | mlog_errno(status); | |
2398 | goto finally; | |
2399 | } | |
2400 | ||
2401 | if (dirty) { | |
2402 | /* Recovery will be completed after we've mounted the | |
2403 | * rest of the volume. */ | |
2404 | osb->dirty = 1; | |
2405 | osb->local_alloc_copy = local_alloc; | |
2406 | local_alloc = NULL; | |
2407 | } | |
2408 | ||
2409 | /* go through each journal, trylock it and if you get the | |
2410 | * lock, and it's marked as dirty, set the bit in the recover | |
2411 | * map and launch a recovery thread for it. */ | |
2412 | status = ocfs2_mark_dead_nodes(osb); | |
9140db04 SE |
2413 | if (status < 0) { |
2414 | mlog_errno(status); | |
2415 | goto finally; | |
2416 | } | |
2417 | ||
2418 | status = ocfs2_compute_replay_slots(osb); | |
ccd979bd MF |
2419 | if (status < 0) |
2420 | mlog_errno(status); | |
2421 | ||
2422 | finally: | |
2423 | if (local_alloc) | |
2424 | kfree(local_alloc); | |
2425 | ||
2426 | mlog_exit(status); | |
2427 | return status; | |
2428 | } | |
2429 | ||
2430 | /* | |
2431 | * The routine gets called from dismount or close whenever a dismount on | |
2432 | * volume is requested and the osb open count becomes 1. | |
2433 | * It will remove the osb from the global list and also free up all the | |
2434 | * initialized resources and fileobject. | |
2435 | */ | |
2436 | static void ocfs2_delete_osb(struct ocfs2_super *osb) | |
2437 | { | |
2438 | mlog_entry_void(); | |
2439 | ||
2440 | /* This function assumes that the caller has the main osb resource */ | |
2441 | ||
8e8a4603 | 2442 | ocfs2_free_slot_info(osb); |
ccd979bd | 2443 | |
b4df6ed8 | 2444 | kfree(osb->osb_orphan_wipes); |
539d8264 | 2445 | kfree(osb->slot_recovery_generations); |
ccd979bd MF |
2446 | /* FIXME |
2447 | * This belongs in journal shutdown, but because we have to | |
2448 | * allocate osb->journal at the start of ocfs2_initalize_osb(), | |
2449 | * we free it here. | |
2450 | */ | |
2451 | kfree(osb->journal); | |
2452 | if (osb->local_alloc_copy) | |
2453 | kfree(osb->local_alloc_copy); | |
2454 | kfree(osb->uuid_str); | |
2455 | ocfs2_put_dlm_debug(osb->osb_dlm_debug); | |
2456 | memset(osb, 0, sizeof(struct ocfs2_super)); | |
2457 | ||
2458 | mlog_exit_void(); | |
2459 | } | |
2460 | ||
2461 | /* Put OCFS2 into a readonly state, or (if the user specifies it), | |
2462 | * panic(). We do not support continue-on-error operation. */ | |
2463 | static void ocfs2_handle_error(struct super_block *sb) | |
2464 | { | |
2465 | struct ocfs2_super *osb = OCFS2_SB(sb); | |
2466 | ||
2467 | if (osb->s_mount_opt & OCFS2_MOUNT_ERRORS_PANIC) | |
2468 | panic("OCFS2: (device %s): panic forced after error\n", | |
2469 | sb->s_id); | |
2470 | ||
2471 | ocfs2_set_osb_flag(osb, OCFS2_OSB_ERROR_FS); | |
2472 | ||
2473 | if (sb->s_flags & MS_RDONLY && | |
2474 | (ocfs2_is_soft_readonly(osb) || | |
2475 | ocfs2_is_hard_readonly(osb))) | |
2476 | return; | |
2477 | ||
2478 | printk(KERN_CRIT "File system is now read-only due to the potential " | |
2479 | "of on-disk corruption. Please run fsck.ocfs2 once the file " | |
2480 | "system is unmounted.\n"); | |
2481 | sb->s_flags |= MS_RDONLY; | |
2482 | ocfs2_set_ro_flag(osb, 0); | |
2483 | } | |
2484 | ||
2485 | static char error_buf[1024]; | |
2486 | ||
2487 | void __ocfs2_error(struct super_block *sb, | |
2488 | const char *function, | |
2489 | const char *fmt, ...) | |
2490 | { | |
2491 | va_list args; | |
2492 | ||
2493 | va_start(args, fmt); | |
4a6e617a | 2494 | vsnprintf(error_buf, sizeof(error_buf), fmt, args); |
ccd979bd MF |
2495 | va_end(args); |
2496 | ||
2497 | /* Not using mlog here because we want to show the actual | |
2498 | * function the error came from. */ | |
2499 | printk(KERN_CRIT "OCFS2: ERROR (device %s): %s: %s\n", | |
2500 | sb->s_id, function, error_buf); | |
2501 | ||
2502 | ocfs2_handle_error(sb); | |
2503 | } | |
2504 | ||
2505 | /* Handle critical errors. This is intentionally more drastic than | |
2506 | * ocfs2_handle_error, so we only use for things like journal errors, | |
2507 | * etc. */ | |
2508 | void __ocfs2_abort(struct super_block* sb, | |
2509 | const char *function, | |
2510 | const char *fmt, ...) | |
2511 | { | |
2512 | va_list args; | |
2513 | ||
2514 | va_start(args, fmt); | |
4a6e617a | 2515 | vsnprintf(error_buf, sizeof(error_buf), fmt, args); |
ccd979bd MF |
2516 | va_end(args); |
2517 | ||
2518 | printk(KERN_CRIT "OCFS2: abort (device %s): %s: %s\n", | |
2519 | sb->s_id, function, error_buf); | |
2520 | ||
2521 | /* We don't have the cluster support yet to go straight to | |
2522 | * hard readonly in here. Until then, we want to keep | |
2523 | * ocfs2_abort() so that we can at least mark critical | |
2524 | * errors. | |
2525 | * | |
2526 | * TODO: This should abort the journal and alert other nodes | |
2527 | * that our slot needs recovery. */ | |
2528 | ||
2529 | /* Force a panic(). This stinks, but it's better than letting | |
2530 | * things continue without having a proper hard readonly | |
2531 | * here. */ | |
a2f2ddbf SM |
2532 | if (!ocfs2_mount_local(OCFS2_SB(sb))) |
2533 | OCFS2_SB(sb)->s_mount_opt |= OCFS2_MOUNT_ERRORS_PANIC; | |
ccd979bd MF |
2534 | ocfs2_handle_error(sb); |
2535 | } | |
2536 | ||
2537 | module_init(ocfs2_init); | |
2538 | module_exit(ocfs2_exit); |