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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> |
1cfd8bd0 | 44 | #include <linux/cleancache.h> |
ccd979bd | 45 | |
80a9a84d WW |
46 | #define CREATE_TRACE_POINTS |
47 | #include "ocfs2_trace.h" | |
48 | ||
ccd979bd MF |
49 | #include <cluster/masklog.h> |
50 | ||
51 | #include "ocfs2.h" | |
52 | ||
53 | /* this should be the only file to include a version 1 header */ | |
54 | #include "ocfs1_fs_compat.h" | |
55 | ||
56 | #include "alloc.h" | |
a11f7e63 | 57 | #include "aops.h" |
d030cc97 | 58 | #include "blockcheck.h" |
ccd979bd MF |
59 | #include "dlmglue.h" |
60 | #include "export.h" | |
61 | #include "extent_map.h" | |
62 | #include "heartbeat.h" | |
63 | #include "inode.h" | |
64 | #include "journal.h" | |
65 | #include "localalloc.h" | |
66 | #include "namei.h" | |
67 | #include "slot_map.h" | |
68 | #include "super.h" | |
69 | #include "sysfile.h" | |
70 | #include "uptodate.h" | |
71 | #include "ver.h" | |
cf1d6c76 | 72 | #include "xattr.h" |
9e33d69f | 73 | #include "quota.h" |
374a263e | 74 | #include "refcounttree.h" |
b89c5428 | 75 | #include "suballoc.h" |
ccd979bd MF |
76 | |
77 | #include "buffer_head_io.h" | |
78 | ||
e18b890b | 79 | static struct kmem_cache *ocfs2_inode_cachep = NULL; |
9e33d69f JK |
80 | struct kmem_cache *ocfs2_dquot_cachep; |
81 | struct kmem_cache *ocfs2_qf_chunk_cachep; | |
ccd979bd | 82 | |
25985edc | 83 | /* OCFS2 needs to schedule several different types of work which |
ccd979bd MF |
84 | * require cluster locking, disk I/O, recovery waits, etc. Since these |
85 | * types of work tend to be heavy we avoid using the kernel events | |
86 | * workqueue and schedule on our own. */ | |
87 | struct workqueue_struct *ocfs2_wq = NULL; | |
88 | ||
89 | static struct dentry *ocfs2_debugfs_root = NULL; | |
90 | ||
91 | MODULE_AUTHOR("Oracle"); | |
92 | MODULE_LICENSE("GPL"); | |
93 | ||
c0123ade TY |
94 | struct mount_options |
95 | { | |
d147b3d6 | 96 | unsigned long commit_interval; |
c0123ade TY |
97 | unsigned long mount_opt; |
98 | unsigned int atime_quantum; | |
99 | signed short slot; | |
73c8a800 | 100 | int localalloc_opt; |
d02f00cc | 101 | unsigned int resv_level; |
83f92318 | 102 | int dir_resv_level; |
b61817e1 | 103 | char cluster_stack[OCFS2_STACK_LABEL_LEN + 1]; |
c0123ade TY |
104 | }; |
105 | ||
ccd979bd | 106 | static int ocfs2_parse_options(struct super_block *sb, char *options, |
c0123ade | 107 | struct mount_options *mopt, |
baf4661a | 108 | int is_remount); |
5297aad8 JK |
109 | static int ocfs2_check_set_options(struct super_block *sb, |
110 | struct mount_options *options); | |
34c80b1d | 111 | static int ocfs2_show_options(struct seq_file *s, struct dentry *root); |
ccd979bd MF |
112 | static void ocfs2_put_super(struct super_block *sb); |
113 | static int ocfs2_mount_volume(struct super_block *sb); | |
114 | static int ocfs2_remount(struct super_block *sb, int *flags, char *data); | |
115 | static void ocfs2_dismount_volume(struct super_block *sb, int mnt_err); | |
116 | static int ocfs2_initialize_mem_caches(void); | |
117 | static void ocfs2_free_mem_caches(void); | |
118 | static void ocfs2_delete_osb(struct ocfs2_super *osb); | |
119 | ||
726c3342 | 120 | static int ocfs2_statfs(struct dentry *dentry, struct kstatfs *buf); |
ccd979bd MF |
121 | |
122 | static int ocfs2_sync_fs(struct super_block *sb, int wait); | |
123 | ||
124 | static int ocfs2_init_global_system_inodes(struct ocfs2_super *osb); | |
125 | static int ocfs2_init_local_system_inodes(struct ocfs2_super *osb); | |
bddb8eb3 | 126 | static void ocfs2_release_system_inodes(struct ocfs2_super *osb); |
ccd979bd MF |
127 | static int ocfs2_check_volume(struct ocfs2_super *osb); |
128 | static int ocfs2_verify_volume(struct ocfs2_dinode *di, | |
129 | struct buffer_head *bh, | |
73be192b JB |
130 | u32 sectsize, |
131 | struct ocfs2_blockcheck_stats *stats); | |
ccd979bd MF |
132 | static int ocfs2_initialize_super(struct super_block *sb, |
133 | struct buffer_head *bh, | |
73be192b JB |
134 | int sector_size, |
135 | struct ocfs2_blockcheck_stats *stats); | |
ccd979bd MF |
136 | static int ocfs2_get_sector(struct super_block *sb, |
137 | struct buffer_head **bh, | |
138 | int block, | |
139 | int sect_size); | |
ccd979bd MF |
140 | static struct inode *ocfs2_alloc_inode(struct super_block *sb); |
141 | static void ocfs2_destroy_inode(struct inode *inode); | |
19ece546 JK |
142 | static int ocfs2_susp_quotas(struct ocfs2_super *osb, int unsuspend); |
143 | static int ocfs2_enable_quotas(struct ocfs2_super *osb); | |
144 | static void ocfs2_disable_quotas(struct ocfs2_super *osb); | |
ccd979bd | 145 | |
ee9b6d61 | 146 | static const struct super_operations ocfs2_sops = { |
ccd979bd MF |
147 | .statfs = ocfs2_statfs, |
148 | .alloc_inode = ocfs2_alloc_inode, | |
149 | .destroy_inode = ocfs2_destroy_inode, | |
150 | .drop_inode = ocfs2_drop_inode, | |
066d92dc | 151 | .evict_inode = ocfs2_evict_inode, |
ccd979bd | 152 | .sync_fs = ocfs2_sync_fs, |
ccd979bd MF |
153 | .put_super = ocfs2_put_super, |
154 | .remount_fs = ocfs2_remount, | |
d550071c | 155 | .show_options = ocfs2_show_options, |
9e33d69f JK |
156 | .quota_read = ocfs2_quota_read, |
157 | .quota_write = ocfs2_quota_write, | |
ccd979bd MF |
158 | }; |
159 | ||
160 | enum { | |
161 | Opt_barrier, | |
162 | Opt_err_panic, | |
163 | Opt_err_ro, | |
164 | Opt_intr, | |
165 | Opt_nointr, | |
166 | Opt_hb_none, | |
167 | Opt_hb_local, | |
2c442719 | 168 | Opt_hb_global, |
ccd979bd MF |
169 | Opt_data_ordered, |
170 | Opt_data_writeback, | |
7f1a37e3 | 171 | Opt_atime_quantum, |
baf4661a | 172 | Opt_slot, |
d147b3d6 | 173 | Opt_commit, |
2fbe8d1e | 174 | Opt_localalloc, |
53fc622b | 175 | Opt_localflocks, |
b61817e1 | 176 | Opt_stack, |
cf1d6c76 TY |
177 | Opt_user_xattr, |
178 | Opt_nouser_xattr, | |
12462f1d | 179 | Opt_inode64, |
a68979b8 TY |
180 | Opt_acl, |
181 | Opt_noacl, | |
19ece546 JK |
182 | Opt_usrquota, |
183 | Opt_grpquota, | |
7bdb0d18 TY |
184 | Opt_coherency_buffered, |
185 | Opt_coherency_full, | |
d02f00cc | 186 | Opt_resv_level, |
83f92318 | 187 | Opt_dir_resv_level, |
ccd979bd MF |
188 | Opt_err, |
189 | }; | |
190 | ||
a447c093 | 191 | static const match_table_t tokens = { |
ccd979bd MF |
192 | {Opt_barrier, "barrier=%u"}, |
193 | {Opt_err_panic, "errors=panic"}, | |
194 | {Opt_err_ro, "errors=remount-ro"}, | |
195 | {Opt_intr, "intr"}, | |
196 | {Opt_nointr, "nointr"}, | |
197 | {Opt_hb_none, OCFS2_HB_NONE}, | |
198 | {Opt_hb_local, OCFS2_HB_LOCAL}, | |
2c442719 | 199 | {Opt_hb_global, OCFS2_HB_GLOBAL}, |
ccd979bd MF |
200 | {Opt_data_ordered, "data=ordered"}, |
201 | {Opt_data_writeback, "data=writeback"}, | |
7f1a37e3 | 202 | {Opt_atime_quantum, "atime_quantum=%u"}, |
baf4661a | 203 | {Opt_slot, "preferred_slot=%u"}, |
d147b3d6 | 204 | {Opt_commit, "commit=%u"}, |
2fbe8d1e | 205 | {Opt_localalloc, "localalloc=%d"}, |
53fc622b | 206 | {Opt_localflocks, "localflocks"}, |
b61817e1 | 207 | {Opt_stack, "cluster_stack=%s"}, |
cf1d6c76 TY |
208 | {Opt_user_xattr, "user_xattr"}, |
209 | {Opt_nouser_xattr, "nouser_xattr"}, | |
12462f1d | 210 | {Opt_inode64, "inode64"}, |
a68979b8 TY |
211 | {Opt_acl, "acl"}, |
212 | {Opt_noacl, "noacl"}, | |
19ece546 JK |
213 | {Opt_usrquota, "usrquota"}, |
214 | {Opt_grpquota, "grpquota"}, | |
7bdb0d18 TY |
215 | {Opt_coherency_buffered, "coherency=buffered"}, |
216 | {Opt_coherency_full, "coherency=full"}, | |
d02f00cc | 217 | {Opt_resv_level, "resv_level=%u"}, |
83f92318 | 218 | {Opt_dir_resv_level, "dir_resv_level=%u"}, |
ccd979bd MF |
219 | {Opt_err, NULL} |
220 | }; | |
221 | ||
50397507 SM |
222 | #ifdef CONFIG_DEBUG_FS |
223 | static int ocfs2_osb_dump(struct ocfs2_super *osb, char *buf, int len) | |
224 | { | |
50397507 SM |
225 | struct ocfs2_cluster_connection *cconn = osb->cconn; |
226 | struct ocfs2_recovery_map *rm = osb->recovery_map; | |
df152c24 SM |
227 | struct ocfs2_orphan_scan *os = &osb->osb_orphan_scan; |
228 | int i, out = 0; | |
50397507 SM |
229 | |
230 | out += snprintf(buf + out, len - out, | |
231 | "%10s => Id: %-s Uuid: %-s Gen: 0x%X Label: %-s\n", | |
232 | "Device", osb->dev_str, osb->uuid_str, | |
233 | osb->fs_generation, osb->vol_label); | |
234 | ||
235 | out += snprintf(buf + out, len - out, | |
236 | "%10s => State: %d Flags: 0x%lX\n", "Volume", | |
237 | atomic_read(&osb->vol_state), osb->osb_flags); | |
238 | ||
239 | out += snprintf(buf + out, len - out, | |
240 | "%10s => Block: %lu Cluster: %d\n", "Sizes", | |
241 | osb->sb->s_blocksize, osb->s_clustersize); | |
242 | ||
243 | out += snprintf(buf + out, len - out, | |
244 | "%10s => Compat: 0x%X Incompat: 0x%X " | |
245 | "ROcompat: 0x%X\n", | |
246 | "Features", osb->s_feature_compat, | |
247 | osb->s_feature_incompat, osb->s_feature_ro_compat); | |
248 | ||
249 | out += snprintf(buf + out, len - out, | |
250 | "%10s => Opts: 0x%lX AtimeQuanta: %u\n", "Mount", | |
251 | osb->s_mount_opt, osb->s_atime_quantum); | |
252 | ||
c3d38840 SM |
253 | if (cconn) { |
254 | out += snprintf(buf + out, len - out, | |
255 | "%10s => Stack: %s Name: %*s " | |
256 | "Version: %d.%d\n", "Cluster", | |
257 | (*osb->osb_cluster_stack == '\0' ? | |
258 | "o2cb" : osb->osb_cluster_stack), | |
259 | cconn->cc_namelen, cconn->cc_name, | |
260 | cconn->cc_version.pv_major, | |
261 | cconn->cc_version.pv_minor); | |
262 | } | |
50397507 SM |
263 | |
264 | spin_lock(&osb->dc_task_lock); | |
265 | out += snprintf(buf + out, len - out, | |
266 | "%10s => Pid: %d Count: %lu WakeSeq: %lu " | |
267 | "WorkSeq: %lu\n", "DownCnvt", | |
c3d38840 SM |
268 | (osb->dc_task ? task_pid_nr(osb->dc_task) : -1), |
269 | osb->blocked_lock_count, osb->dc_wake_sequence, | |
270 | osb->dc_work_sequence); | |
50397507 SM |
271 | spin_unlock(&osb->dc_task_lock); |
272 | ||
273 | spin_lock(&osb->osb_lock); | |
274 | out += snprintf(buf + out, len - out, "%10s => Pid: %d Nodes:", | |
275 | "Recovery", | |
276 | (osb->recovery_thread_task ? | |
277 | task_pid_nr(osb->recovery_thread_task) : -1)); | |
278 | if (rm->rm_used == 0) | |
279 | out += snprintf(buf + out, len - out, " None\n"); | |
280 | else { | |
281 | for (i = 0; i < rm->rm_used; i++) | |
282 | out += snprintf(buf + out, len - out, " %d", | |
283 | rm->rm_entries[i]); | |
284 | out += snprintf(buf + out, len - out, "\n"); | |
285 | } | |
286 | spin_unlock(&osb->osb_lock); | |
287 | ||
288 | out += snprintf(buf + out, len - out, | |
289 | "%10s => Pid: %d Interval: %lu Needs: %d\n", "Commit", | |
c3d38840 SM |
290 | (osb->commit_task ? task_pid_nr(osb->commit_task) : -1), |
291 | osb->osb_commit_interval, | |
50397507 SM |
292 | atomic_read(&osb->needs_checkpoint)); |
293 | ||
294 | out += snprintf(buf + out, len - out, | |
c3d38840 | 295 | "%10s => State: %d TxnId: %lu NumTxns: %d\n", |
50397507 | 296 | "Journal", osb->journal->j_state, |
c3d38840 SM |
297 | osb->journal->j_trans_id, |
298 | atomic_read(&osb->journal->j_num_trans)); | |
50397507 SM |
299 | |
300 | out += snprintf(buf + out, len - out, | |
301 | "%10s => GlobalAllocs: %d LocalAllocs: %d " | |
302 | "SubAllocs: %d LAWinMoves: %d SAExtends: %d\n", | |
303 | "Stats", | |
304 | atomic_read(&osb->alloc_stats.bitmap_data), | |
305 | atomic_read(&osb->alloc_stats.local_data), | |
306 | atomic_read(&osb->alloc_stats.bg_allocs), | |
307 | atomic_read(&osb->alloc_stats.moves), | |
308 | atomic_read(&osb->alloc_stats.bg_extends)); | |
309 | ||
310 | out += snprintf(buf + out, len - out, | |
311 | "%10s => State: %u Descriptor: %llu Size: %u bits " | |
312 | "Default: %u bits\n", | |
313 | "LocalAlloc", osb->local_alloc_state, | |
314 | (unsigned long long)osb->la_last_gd, | |
315 | osb->local_alloc_bits, osb->local_alloc_default_bits); | |
316 | ||
317 | spin_lock(&osb->osb_lock); | |
318 | out += snprintf(buf + out, len - out, | |
b89c5428 TY |
319 | "%10s => InodeSlot: %d StolenInodes: %d, " |
320 | "MetaSlot: %d StolenMeta: %d\n", "Steal", | |
50397507 | 321 | osb->s_inode_steal_slot, |
b89c5428 TY |
322 | atomic_read(&osb->s_num_inodes_stolen), |
323 | osb->s_meta_steal_slot, | |
324 | atomic_read(&osb->s_num_meta_stolen)); | |
50397507 SM |
325 | spin_unlock(&osb->osb_lock); |
326 | ||
df152c24 SM |
327 | out += snprintf(buf + out, len - out, "OrphanScan => "); |
328 | out += snprintf(buf + out, len - out, "Local: %u Global: %u ", | |
329 | os->os_count, os->os_seqno); | |
330 | out += snprintf(buf + out, len - out, " Last Scan: "); | |
331 | if (atomic_read(&os->os_state) == ORPHAN_SCAN_INACTIVE) | |
332 | out += snprintf(buf + out, len - out, "Disabled\n"); | |
333 | else | |
334 | out += snprintf(buf + out, len - out, "%lu seconds ago\n", | |
335 | (get_seconds() - os->os_scantime.tv_sec)); | |
336 | ||
50397507 SM |
337 | out += snprintf(buf + out, len - out, "%10s => %3s %10s\n", |
338 | "Slots", "Num", "RecoGen"); | |
50397507 SM |
339 | for (i = 0; i < osb->max_slots; ++i) { |
340 | out += snprintf(buf + out, len - out, | |
341 | "%10s %c %3d %10d\n", | |
342 | " ", | |
343 | (i == osb->slot_num ? '*' : ' '), | |
344 | i, osb->slot_recovery_generations[i]); | |
345 | } | |
346 | ||
347 | return out; | |
348 | } | |
349 | ||
350 | static int ocfs2_osb_debug_open(struct inode *inode, struct file *file) | |
351 | { | |
352 | struct ocfs2_super *osb = inode->i_private; | |
353 | char *buf = NULL; | |
354 | ||
355 | buf = kmalloc(PAGE_SIZE, GFP_KERNEL); | |
356 | if (!buf) | |
357 | goto bail; | |
358 | ||
359 | i_size_write(inode, ocfs2_osb_dump(osb, buf, PAGE_SIZE)); | |
360 | ||
361 | file->private_data = buf; | |
362 | ||
363 | return 0; | |
364 | bail: | |
365 | return -ENOMEM; | |
366 | } | |
367 | ||
368 | static int ocfs2_debug_release(struct inode *inode, struct file *file) | |
369 | { | |
370 | kfree(file->private_data); | |
371 | return 0; | |
372 | } | |
373 | ||
374 | static ssize_t ocfs2_debug_read(struct file *file, char __user *buf, | |
375 | size_t nbytes, loff_t *ppos) | |
376 | { | |
377 | return simple_read_from_buffer(buf, nbytes, ppos, file->private_data, | |
378 | i_size_read(file->f_mapping->host)); | |
379 | } | |
380 | #else | |
381 | static int ocfs2_osb_debug_open(struct inode *inode, struct file *file) | |
382 | { | |
383 | return 0; | |
384 | } | |
385 | static int ocfs2_debug_release(struct inode *inode, struct file *file) | |
386 | { | |
387 | return 0; | |
388 | } | |
389 | static ssize_t ocfs2_debug_read(struct file *file, char __user *buf, | |
390 | size_t nbytes, loff_t *ppos) | |
391 | { | |
392 | return 0; | |
393 | } | |
394 | #endif /* CONFIG_DEBUG_FS */ | |
395 | ||
828c0950 | 396 | static const struct file_operations ocfs2_osb_debug_fops = { |
50397507 SM |
397 | .open = ocfs2_osb_debug_open, |
398 | .release = ocfs2_debug_release, | |
399 | .read = ocfs2_debug_read, | |
400 | .llseek = generic_file_llseek, | |
401 | }; | |
402 | ||
ccd979bd MF |
403 | static int ocfs2_sync_fs(struct super_block *sb, int wait) |
404 | { | |
bddb8eb3 | 405 | int status; |
ccd979bd MF |
406 | tid_t target; |
407 | struct ocfs2_super *osb = OCFS2_SB(sb); | |
408 | ||
ccd979bd MF |
409 | if (ocfs2_is_hard_readonly(osb)) |
410 | return -EROFS; | |
411 | ||
412 | if (wait) { | |
413 | status = ocfs2_flush_truncate_log(osb); | |
414 | if (status < 0) | |
415 | mlog_errno(status); | |
416 | } else { | |
417 | ocfs2_schedule_truncate_log_flush(osb, 0); | |
418 | } | |
419 | ||
2b4e30fb JB |
420 | if (jbd2_journal_start_commit(OCFS2_SB(sb)->journal->j_journal, |
421 | &target)) { | |
ccd979bd | 422 | if (wait) |
2b4e30fb JB |
423 | jbd2_log_wait_commit(OCFS2_SB(sb)->journal->j_journal, |
424 | target); | |
ccd979bd MF |
425 | } |
426 | return 0; | |
427 | } | |
428 | ||
1a224ad1 JK |
429 | static int ocfs2_need_system_inode(struct ocfs2_super *osb, int ino) |
430 | { | |
431 | if (!OCFS2_HAS_RO_COMPAT_FEATURE(osb->sb, OCFS2_FEATURE_RO_COMPAT_USRQUOTA) | |
432 | && (ino == USER_QUOTA_SYSTEM_INODE | |
433 | || ino == LOCAL_USER_QUOTA_SYSTEM_INODE)) | |
434 | return 0; | |
435 | if (!OCFS2_HAS_RO_COMPAT_FEATURE(osb->sb, OCFS2_FEATURE_RO_COMPAT_GRPQUOTA) | |
436 | && (ino == GROUP_QUOTA_SYSTEM_INODE | |
437 | || ino == LOCAL_GROUP_QUOTA_SYSTEM_INODE)) | |
438 | return 0; | |
439 | return 1; | |
440 | } | |
441 | ||
ccd979bd MF |
442 | static int ocfs2_init_global_system_inodes(struct ocfs2_super *osb) |
443 | { | |
444 | struct inode *new = NULL; | |
445 | int status = 0; | |
446 | int i; | |
447 | ||
5fa0613e | 448 | new = ocfs2_iget(osb, osb->root_blkno, OCFS2_FI_FLAG_SYSFILE, 0); |
ccd979bd MF |
449 | if (IS_ERR(new)) { |
450 | status = PTR_ERR(new); | |
451 | mlog_errno(status); | |
452 | goto bail; | |
453 | } | |
454 | osb->root_inode = new; | |
455 | ||
5fa0613e | 456 | new = ocfs2_iget(osb, osb->system_dir_blkno, OCFS2_FI_FLAG_SYSFILE, 0); |
ccd979bd MF |
457 | if (IS_ERR(new)) { |
458 | status = PTR_ERR(new); | |
459 | mlog_errno(status); | |
460 | goto bail; | |
461 | } | |
462 | osb->sys_root_inode = new; | |
463 | ||
464 | for (i = OCFS2_FIRST_ONLINE_SYSTEM_INODE; | |
465 | i <= OCFS2_LAST_GLOBAL_SYSTEM_INODE; i++) { | |
1a224ad1 JK |
466 | if (!ocfs2_need_system_inode(osb, i)) |
467 | continue; | |
ccd979bd MF |
468 | new = ocfs2_get_system_file_inode(osb, i, osb->slot_num); |
469 | if (!new) { | |
470 | ocfs2_release_system_inodes(osb); | |
471 | status = -EINVAL; | |
472 | mlog_errno(status); | |
473 | /* FIXME: Should ERROR_RO_FS */ | |
474 | mlog(ML_ERROR, "Unable to load system inode %d, " | |
475 | "possibly corrupt fs?", i); | |
476 | goto bail; | |
477 | } | |
478 | // the array now has one ref, so drop this one | |
479 | iput(new); | |
480 | } | |
481 | ||
482 | bail: | |
c1e8d35e TM |
483 | if (status) |
484 | mlog_errno(status); | |
ccd979bd MF |
485 | return status; |
486 | } | |
487 | ||
488 | static int ocfs2_init_local_system_inodes(struct ocfs2_super *osb) | |
489 | { | |
490 | struct inode *new = NULL; | |
491 | int status = 0; | |
492 | int i; | |
493 | ||
ccd979bd MF |
494 | for (i = OCFS2_LAST_GLOBAL_SYSTEM_INODE + 1; |
495 | i < NUM_SYSTEM_INODES; | |
496 | i++) { | |
1a224ad1 JK |
497 | if (!ocfs2_need_system_inode(osb, i)) |
498 | continue; | |
ccd979bd MF |
499 | new = ocfs2_get_system_file_inode(osb, i, osb->slot_num); |
500 | if (!new) { | |
501 | ocfs2_release_system_inodes(osb); | |
502 | status = -EINVAL; | |
503 | mlog(ML_ERROR, "status=%d, sysfile=%d, slot=%d\n", | |
504 | status, i, osb->slot_num); | |
505 | goto bail; | |
506 | } | |
507 | /* the array now has one ref, so drop this one */ | |
508 | iput(new); | |
509 | } | |
510 | ||
511 | bail: | |
c1e8d35e TM |
512 | if (status) |
513 | mlog_errno(status); | |
ccd979bd MF |
514 | return status; |
515 | } | |
516 | ||
bddb8eb3 | 517 | static void ocfs2_release_system_inodes(struct ocfs2_super *osb) |
ccd979bd | 518 | { |
bddb8eb3 | 519 | int i; |
ccd979bd MF |
520 | struct inode *inode; |
521 | ||
b4d693fc TM |
522 | for (i = 0; i < NUM_GLOBAL_SYSTEM_INODES; i++) { |
523 | inode = osb->global_system_inodes[i]; | |
ccd979bd MF |
524 | if (inode) { |
525 | iput(inode); | |
b4d693fc | 526 | osb->global_system_inodes[i] = NULL; |
ccd979bd MF |
527 | } |
528 | } | |
529 | ||
530 | inode = osb->sys_root_inode; | |
531 | if (inode) { | |
532 | iput(inode); | |
533 | osb->sys_root_inode = NULL; | |
534 | } | |
535 | ||
536 | inode = osb->root_inode; | |
537 | if (inode) { | |
538 | iput(inode); | |
539 | osb->root_inode = NULL; | |
540 | } | |
541 | ||
b4d693fc | 542 | if (!osb->local_system_inodes) |
c1e8d35e | 543 | return; |
b4d693fc TM |
544 | |
545 | for (i = 0; i < NUM_LOCAL_SYSTEM_INODES * osb->max_slots; i++) { | |
546 | if (osb->local_system_inodes[i]) { | |
547 | iput(osb->local_system_inodes[i]); | |
548 | osb->local_system_inodes[i] = NULL; | |
549 | } | |
550 | } | |
551 | ||
552 | kfree(osb->local_system_inodes); | |
553 | osb->local_system_inodes = NULL; | |
ccd979bd MF |
554 | } |
555 | ||
556 | /* We're allocating fs objects, use GFP_NOFS */ | |
557 | static struct inode *ocfs2_alloc_inode(struct super_block *sb) | |
558 | { | |
559 | struct ocfs2_inode_info *oi; | |
560 | ||
e6b4f8da | 561 | oi = kmem_cache_alloc(ocfs2_inode_cachep, GFP_NOFS); |
ccd979bd MF |
562 | if (!oi) |
563 | return NULL; | |
564 | ||
2b4e30fb | 565 | jbd2_journal_init_jbd_inode(&oi->ip_jinode, &oi->vfs_inode); |
ccd979bd MF |
566 | return &oi->vfs_inode; |
567 | } | |
568 | ||
fa0d7e3d | 569 | static void ocfs2_i_callback(struct rcu_head *head) |
ccd979bd | 570 | { |
fa0d7e3d | 571 | struct inode *inode = container_of(head, struct inode, i_rcu); |
ccd979bd MF |
572 | kmem_cache_free(ocfs2_inode_cachep, OCFS2_I(inode)); |
573 | } | |
574 | ||
fa0d7e3d NP |
575 | static void ocfs2_destroy_inode(struct inode *inode) |
576 | { | |
577 | call_rcu(&inode->i_rcu, ocfs2_i_callback); | |
578 | } | |
579 | ||
5a254031 MF |
580 | static unsigned long long ocfs2_max_file_offset(unsigned int bbits, |
581 | unsigned int cbits) | |
ccd979bd | 582 | { |
5a254031 MF |
583 | unsigned int bytes = 1 << cbits; |
584 | unsigned int trim = bytes; | |
585 | unsigned int bitshift = 32; | |
586 | ||
587 | /* | |
588 | * i_size and all block offsets in ocfs2 are always 64 bits | |
589 | * wide. i_clusters is 32 bits, in cluster-sized units. So on | |
590 | * 64 bit platforms, cluster size will be the limiting factor. | |
ccd979bd MF |
591 | */ |
592 | ||
593 | #if BITS_PER_LONG == 32 | |
90c699a9 | 594 | # if defined(CONFIG_LBDAF) |
2ecd05ae | 595 | BUILD_BUG_ON(sizeof(sector_t) != 8); |
5a254031 MF |
596 | /* |
597 | * We might be limited by page cache size. | |
598 | */ | |
599 | if (bytes > PAGE_CACHE_SIZE) { | |
600 | bytes = PAGE_CACHE_SIZE; | |
601 | trim = 1; | |
602 | /* | |
603 | * Shift by 31 here so that we don't get larger than | |
604 | * MAX_LFS_FILESIZE | |
605 | */ | |
606 | bitshift = 31; | |
607 | } | |
ccd979bd | 608 | # else |
5a254031 MF |
609 | /* |
610 | * We are limited by the size of sector_t. Use block size, as | |
611 | * that's what we expose to the VFS. | |
612 | */ | |
613 | bytes = 1 << bbits; | |
614 | trim = 1; | |
615 | bitshift = 31; | |
ccd979bd MF |
616 | # endif |
617 | #endif | |
618 | ||
5a254031 MF |
619 | /* |
620 | * Trim by a whole cluster when we can actually approach the | |
621 | * on-disk limits. Otherwise we can overflow i_clusters when | |
622 | * an extent start is at the max offset. | |
623 | */ | |
624 | return (((unsigned long long)bytes) << bitshift) - trim; | |
ccd979bd MF |
625 | } |
626 | ||
627 | static int ocfs2_remount(struct super_block *sb, int *flags, char *data) | |
628 | { | |
629 | int incompat_features; | |
630 | int ret = 0; | |
c0123ade | 631 | struct mount_options parsed_options; |
ccd979bd | 632 | struct ocfs2_super *osb = OCFS2_SB(sb); |
2c442719 | 633 | u32 tmp; |
ccd979bd | 634 | |
5297aad8 JK |
635 | if (!ocfs2_parse_options(sb, data, &parsed_options, 1) || |
636 | !ocfs2_check_set_options(sb, &parsed_options)) { | |
ccd979bd MF |
637 | ret = -EINVAL; |
638 | goto out; | |
639 | } | |
640 | ||
2c442719 SM |
641 | tmp = OCFS2_MOUNT_HB_LOCAL | OCFS2_MOUNT_HB_GLOBAL | |
642 | OCFS2_MOUNT_HB_NONE; | |
643 | if ((osb->s_mount_opt & tmp) != (parsed_options.mount_opt & tmp)) { | |
ccd979bd MF |
644 | ret = -EINVAL; |
645 | mlog(ML_ERROR, "Cannot change heartbeat mode on remount\n"); | |
646 | goto out; | |
647 | } | |
648 | ||
649 | if ((osb->s_mount_opt & OCFS2_MOUNT_DATA_WRITEBACK) != | |
c0123ade | 650 | (parsed_options.mount_opt & OCFS2_MOUNT_DATA_WRITEBACK)) { |
ccd979bd MF |
651 | ret = -EINVAL; |
652 | mlog(ML_ERROR, "Cannot change data mode on remount\n"); | |
653 | goto out; | |
654 | } | |
655 | ||
12462f1d JB |
656 | /* Probably don't want this on remount; it might |
657 | * mess with other nodes */ | |
658 | if (!(osb->s_mount_opt & OCFS2_MOUNT_INODE64) && | |
659 | (parsed_options.mount_opt & OCFS2_MOUNT_INODE64)) { | |
660 | ret = -EINVAL; | |
661 | mlog(ML_ERROR, "Cannot enable inode64 on remount\n"); | |
662 | goto out; | |
663 | } | |
664 | ||
ccd979bd MF |
665 | /* We're going to/from readonly mode. */ |
666 | if ((*flags & MS_RDONLY) != (sb->s_flags & MS_RDONLY)) { | |
19ece546 JK |
667 | /* Disable quota accounting before remounting RO */ |
668 | if (*flags & MS_RDONLY) { | |
669 | ret = ocfs2_susp_quotas(osb, 0); | |
670 | if (ret < 0) | |
671 | goto out; | |
672 | } | |
ccd979bd MF |
673 | /* Lock here so the check of HARD_RO and the potential |
674 | * setting of SOFT_RO is atomic. */ | |
675 | spin_lock(&osb->osb_lock); | |
676 | if (osb->osb_flags & OCFS2_OSB_HARD_RO) { | |
677 | mlog(ML_ERROR, "Remount on readonly device is forbidden.\n"); | |
678 | ret = -EROFS; | |
679 | goto unlock_osb; | |
680 | } | |
681 | ||
682 | if (*flags & MS_RDONLY) { | |
ccd979bd MF |
683 | sb->s_flags |= MS_RDONLY; |
684 | osb->osb_flags |= OCFS2_OSB_SOFT_RO; | |
685 | } else { | |
ccd979bd MF |
686 | if (osb->osb_flags & OCFS2_OSB_ERROR_FS) { |
687 | mlog(ML_ERROR, "Cannot remount RDWR " | |
688 | "filesystem due to previous errors.\n"); | |
689 | ret = -EROFS; | |
690 | goto unlock_osb; | |
691 | } | |
692 | incompat_features = OCFS2_HAS_RO_COMPAT_FEATURE(sb, ~OCFS2_FEATURE_RO_COMPAT_SUPP); | |
693 | if (incompat_features) { | |
694 | mlog(ML_ERROR, "Cannot remount RDWR because " | |
695 | "of unsupported optional features " | |
696 | "(%x).\n", incompat_features); | |
697 | ret = -EINVAL; | |
698 | goto unlock_osb; | |
699 | } | |
700 | sb->s_flags &= ~MS_RDONLY; | |
701 | osb->osb_flags &= ~OCFS2_OSB_SOFT_RO; | |
702 | } | |
32a42d39 | 703 | trace_ocfs2_remount(sb->s_flags, osb->osb_flags, *flags); |
ccd979bd MF |
704 | unlock_osb: |
705 | spin_unlock(&osb->osb_lock); | |
19ece546 JK |
706 | /* Enable quota accounting after remounting RW */ |
707 | if (!ret && !(*flags & MS_RDONLY)) { | |
708 | if (sb_any_quota_suspended(sb)) | |
709 | ret = ocfs2_susp_quotas(osb, 1); | |
710 | else | |
711 | ret = ocfs2_enable_quotas(osb); | |
712 | if (ret < 0) { | |
713 | /* Return back changes... */ | |
714 | spin_lock(&osb->osb_lock); | |
715 | sb->s_flags |= MS_RDONLY; | |
716 | osb->osb_flags |= OCFS2_OSB_SOFT_RO; | |
717 | spin_unlock(&osb->osb_lock); | |
718 | goto out; | |
719 | } | |
720 | } | |
ccd979bd MF |
721 | } |
722 | ||
723 | if (!ret) { | |
ccd979bd MF |
724 | /* Only save off the new mount options in case of a successful |
725 | * remount. */ | |
c0123ade TY |
726 | osb->s_mount_opt = parsed_options.mount_opt; |
727 | osb->s_atime_quantum = parsed_options.atime_quantum; | |
728 | osb->preferred_slot = parsed_options.slot; | |
d147b3d6 MF |
729 | if (parsed_options.commit_interval) |
730 | osb->osb_commit_interval = parsed_options.commit_interval; | |
e001e796 MF |
731 | |
732 | if (!ocfs2_is_hard_readonly(osb)) | |
733 | ocfs2_set_journal_params(osb); | |
57b09bb5 JK |
734 | |
735 | sb->s_flags = (sb->s_flags & ~MS_POSIXACL) | | |
736 | ((osb->s_mount_opt & OCFS2_MOUNT_POSIX_ACL) ? | |
737 | MS_POSIXACL : 0); | |
ccd979bd MF |
738 | } |
739 | out: | |
740 | return ret; | |
741 | } | |
742 | ||
743 | static int ocfs2_sb_probe(struct super_block *sb, | |
744 | struct buffer_head **bh, | |
73be192b JB |
745 | int *sector_size, |
746 | struct ocfs2_blockcheck_stats *stats) | |
ccd979bd | 747 | { |
bddb8eb3 | 748 | int status, tmpstat; |
ccd979bd MF |
749 | struct ocfs1_vol_disk_hdr *hdr; |
750 | struct ocfs2_dinode *di; | |
751 | int blksize; | |
752 | ||
753 | *bh = NULL; | |
754 | ||
755 | /* may be > 512 */ | |
e1defc4f | 756 | *sector_size = bdev_logical_block_size(sb->s_bdev); |
ccd979bd MF |
757 | if (*sector_size > OCFS2_MAX_BLOCKSIZE) { |
758 | mlog(ML_ERROR, "Hardware sector size too large: %d (max=%d)\n", | |
759 | *sector_size, OCFS2_MAX_BLOCKSIZE); | |
760 | status = -EINVAL; | |
761 | goto bail; | |
762 | } | |
763 | ||
764 | /* Can this really happen? */ | |
765 | if (*sector_size < OCFS2_MIN_BLOCKSIZE) | |
766 | *sector_size = OCFS2_MIN_BLOCKSIZE; | |
767 | ||
768 | /* check block zero for old format */ | |
769 | status = ocfs2_get_sector(sb, bh, 0, *sector_size); | |
770 | if (status < 0) { | |
771 | mlog_errno(status); | |
772 | goto bail; | |
773 | } | |
774 | hdr = (struct ocfs1_vol_disk_hdr *) (*bh)->b_data; | |
775 | if (hdr->major_version == OCFS1_MAJOR_VERSION) { | |
776 | mlog(ML_ERROR, "incompatible version: %u.%u\n", | |
777 | hdr->major_version, hdr->minor_version); | |
778 | status = -EINVAL; | |
779 | } | |
780 | if (memcmp(hdr->signature, OCFS1_VOLUME_SIGNATURE, | |
781 | strlen(OCFS1_VOLUME_SIGNATURE)) == 0) { | |
782 | mlog(ML_ERROR, "incompatible volume signature: %8s\n", | |
783 | hdr->signature); | |
784 | status = -EINVAL; | |
785 | } | |
786 | brelse(*bh); | |
787 | *bh = NULL; | |
788 | if (status < 0) { | |
789 | mlog(ML_ERROR, "This is an ocfs v1 filesystem which must be " | |
790 | "upgraded before mounting with ocfs v2\n"); | |
791 | goto bail; | |
792 | } | |
793 | ||
794 | /* | |
795 | * Now check at magic offset for 512, 1024, 2048, 4096 | |
796 | * blocksizes. 4096 is the maximum blocksize because it is | |
797 | * the minimum clustersize. | |
798 | */ | |
799 | status = -EINVAL; | |
800 | for (blksize = *sector_size; | |
801 | blksize <= OCFS2_MAX_BLOCKSIZE; | |
802 | blksize <<= 1) { | |
803 | tmpstat = ocfs2_get_sector(sb, bh, | |
804 | OCFS2_SUPER_BLOCK_BLKNO, | |
805 | blksize); | |
806 | if (tmpstat < 0) { | |
807 | status = tmpstat; | |
808 | mlog_errno(status); | |
fb5cbe9e | 809 | break; |
ccd979bd MF |
810 | } |
811 | di = (struct ocfs2_dinode *) (*bh)->b_data; | |
73be192b | 812 | memset(stats, 0, sizeof(struct ocfs2_blockcheck_stats)); |
1c1d9793 | 813 | spin_lock_init(&stats->b_lock); |
fb5cbe9e JB |
814 | tmpstat = ocfs2_verify_volume(di, *bh, blksize, stats); |
815 | if (tmpstat < 0) { | |
816 | brelse(*bh); | |
817 | *bh = NULL; | |
818 | } | |
819 | if (tmpstat != -EAGAIN) { | |
820 | status = tmpstat; | |
ccd979bd | 821 | break; |
fb5cbe9e | 822 | } |
ccd979bd MF |
823 | } |
824 | ||
825 | bail: | |
826 | return status; | |
827 | } | |
828 | ||
c271c5c2 SM |
829 | static int ocfs2_verify_heartbeat(struct ocfs2_super *osb) |
830 | { | |
2c442719 SM |
831 | u32 hb_enabled = OCFS2_MOUNT_HB_LOCAL | OCFS2_MOUNT_HB_GLOBAL; |
832 | ||
833 | if (osb->s_mount_opt & hb_enabled) { | |
834 | if (ocfs2_mount_local(osb)) { | |
c271c5c2 SM |
835 | mlog(ML_ERROR, "Cannot heartbeat on a locally " |
836 | "mounted device.\n"); | |
837 | return -EINVAL; | |
838 | } | |
2c442719 | 839 | if (ocfs2_userspace_stack(osb)) { |
b61817e1 JB |
840 | mlog(ML_ERROR, "Userspace stack expected, but " |
841 | "o2cb heartbeat arguments passed to mount\n"); | |
842 | return -EINVAL; | |
843 | } | |
2c442719 SM |
844 | if (((osb->s_mount_opt & OCFS2_MOUNT_HB_GLOBAL) && |
845 | !ocfs2_cluster_o2cb_global_heartbeat(osb)) || | |
846 | ((osb->s_mount_opt & OCFS2_MOUNT_HB_LOCAL) && | |
847 | ocfs2_cluster_o2cb_global_heartbeat(osb))) { | |
848 | mlog(ML_ERROR, "Mismatching o2cb heartbeat modes\n"); | |
849 | return -EINVAL; | |
850 | } | |
b61817e1 JB |
851 | } |
852 | ||
2c442719 | 853 | if (!(osb->s_mount_opt & hb_enabled)) { |
b61817e1 JB |
854 | if (!ocfs2_mount_local(osb) && !ocfs2_is_hard_readonly(osb) && |
855 | !ocfs2_userspace_stack(osb)) { | |
c271c5c2 SM |
856 | mlog(ML_ERROR, "Heartbeat has to be started to mount " |
857 | "a read-write clustered device.\n"); | |
858 | return -EINVAL; | |
859 | } | |
860 | } | |
861 | ||
862 | return 0; | |
863 | } | |
864 | ||
b61817e1 JB |
865 | /* |
866 | * If we're using a userspace stack, mount should have passed | |
867 | * a name that matches the disk. If not, mount should not | |
868 | * have passed a stack. | |
869 | */ | |
870 | static int ocfs2_verify_userspace_stack(struct ocfs2_super *osb, | |
871 | struct mount_options *mopt) | |
872 | { | |
873 | if (!ocfs2_userspace_stack(osb) && mopt->cluster_stack[0]) { | |
874 | mlog(ML_ERROR, | |
875 | "cluster stack passed to mount, but this filesystem " | |
876 | "does not support it\n"); | |
877 | return -EINVAL; | |
878 | } | |
879 | ||
880 | if (ocfs2_userspace_stack(osb) && | |
881 | strncmp(osb->osb_cluster_stack, mopt->cluster_stack, | |
882 | OCFS2_STACK_LABEL_LEN)) { | |
883 | mlog(ML_ERROR, | |
884 | "cluster stack passed to mount (\"%s\") does not " | |
885 | "match the filesystem (\"%s\")\n", | |
886 | mopt->cluster_stack, | |
887 | osb->osb_cluster_stack); | |
888 | return -EINVAL; | |
889 | } | |
890 | ||
891 | return 0; | |
892 | } | |
893 | ||
19ece546 JK |
894 | static int ocfs2_susp_quotas(struct ocfs2_super *osb, int unsuspend) |
895 | { | |
896 | int type; | |
897 | struct super_block *sb = osb->sb; | |
898 | unsigned int feature[MAXQUOTAS] = { OCFS2_FEATURE_RO_COMPAT_USRQUOTA, | |
899 | OCFS2_FEATURE_RO_COMPAT_GRPQUOTA}; | |
900 | int status = 0; | |
901 | ||
902 | for (type = 0; type < MAXQUOTAS; type++) { | |
903 | if (!OCFS2_HAS_RO_COMPAT_FEATURE(sb, feature[type])) | |
904 | continue; | |
905 | if (unsuspend) | |
0f0dd62f | 906 | status = dquot_resume(sb, type); |
eea7feb0 JK |
907 | else { |
908 | struct ocfs2_mem_dqinfo *oinfo; | |
909 | ||
910 | /* Cancel periodic syncing before suspending */ | |
911 | oinfo = sb_dqinfo(sb, type)->dqi_priv; | |
912 | cancel_delayed_work_sync(&oinfo->dqi_sync_work); | |
0f0dd62f | 913 | status = dquot_suspend(sb, type); |
eea7feb0 | 914 | } |
19ece546 JK |
915 | if (status < 0) |
916 | break; | |
917 | } | |
918 | if (status < 0) | |
919 | mlog(ML_ERROR, "Failed to suspend/unsuspend quotas on " | |
920 | "remount (error = %d).\n", status); | |
921 | return status; | |
922 | } | |
923 | ||
924 | static int ocfs2_enable_quotas(struct ocfs2_super *osb) | |
925 | { | |
926 | struct inode *inode[MAXQUOTAS] = { NULL, NULL }; | |
927 | struct super_block *sb = osb->sb; | |
928 | unsigned int feature[MAXQUOTAS] = { OCFS2_FEATURE_RO_COMPAT_USRQUOTA, | |
929 | OCFS2_FEATURE_RO_COMPAT_GRPQUOTA}; | |
930 | unsigned int ino[MAXQUOTAS] = { LOCAL_USER_QUOTA_SYSTEM_INODE, | |
931 | LOCAL_GROUP_QUOTA_SYSTEM_INODE }; | |
932 | int status; | |
933 | int type; | |
934 | ||
935 | sb_dqopt(sb)->flags |= DQUOT_QUOTA_SYS_FILE | DQUOT_NEGATIVE_USAGE; | |
936 | for (type = 0; type < MAXQUOTAS; type++) { | |
937 | if (!OCFS2_HAS_RO_COMPAT_FEATURE(sb, feature[type])) | |
938 | continue; | |
939 | inode[type] = ocfs2_get_system_file_inode(osb, ino[type], | |
940 | osb->slot_num); | |
941 | if (!inode[type]) { | |
942 | status = -ENOENT; | |
943 | goto out_quota_off; | |
944 | } | |
287a8095 CH |
945 | status = dquot_enable(inode[type], type, QFMT_OCFS2, |
946 | DQUOT_USAGE_ENABLED); | |
19ece546 JK |
947 | if (status < 0) |
948 | goto out_quota_off; | |
949 | } | |
950 | ||
951 | for (type = 0; type < MAXQUOTAS; type++) | |
952 | iput(inode[type]); | |
953 | return 0; | |
954 | out_quota_off: | |
955 | ocfs2_disable_quotas(osb); | |
956 | for (type = 0; type < MAXQUOTAS; type++) | |
957 | iput(inode[type]); | |
958 | mlog_errno(status); | |
959 | return status; | |
960 | } | |
961 | ||
962 | static void ocfs2_disable_quotas(struct ocfs2_super *osb) | |
963 | { | |
964 | int type; | |
965 | struct inode *inode; | |
966 | struct super_block *sb = osb->sb; | |
c06bcbfa | 967 | struct ocfs2_mem_dqinfo *oinfo; |
19ece546 JK |
968 | |
969 | /* We mostly ignore errors in this function because there's not much | |
970 | * we can do when we see them */ | |
971 | for (type = 0; type < MAXQUOTAS; type++) { | |
972 | if (!sb_has_quota_loaded(sb, type)) | |
973 | continue; | |
c06bcbfa JK |
974 | /* Cancel periodic syncing before we grab dqonoff_mutex */ |
975 | oinfo = sb_dqinfo(sb, type)->dqi_priv; | |
976 | cancel_delayed_work_sync(&oinfo->dqi_sync_work); | |
19ece546 JK |
977 | inode = igrab(sb->s_dquot.files[type]); |
978 | /* Turn off quotas. This will remove all dquot structures from | |
979 | * memory and so they will be automatically synced to global | |
980 | * quota files */ | |
0f0dd62f CH |
981 | dquot_disable(sb, type, DQUOT_USAGE_ENABLED | |
982 | DQUOT_LIMITS_ENABLED); | |
19ece546 JK |
983 | if (!inode) |
984 | continue; | |
985 | iput(inode); | |
986 | } | |
987 | } | |
988 | ||
989 | /* Handle quota on quotactl */ | |
f00c9e44 | 990 | static int ocfs2_quota_on(struct super_block *sb, int type, int format_id) |
19ece546 JK |
991 | { |
992 | unsigned int feature[MAXQUOTAS] = { OCFS2_FEATURE_RO_COMPAT_USRQUOTA, | |
993 | OCFS2_FEATURE_RO_COMPAT_GRPQUOTA}; | |
994 | ||
995 | if (!OCFS2_HAS_RO_COMPAT_FEATURE(sb, feature[type])) | |
996 | return -EINVAL; | |
997 | ||
287a8095 CH |
998 | return dquot_enable(sb_dqopt(sb)->files[type], type, |
999 | format_id, DQUOT_LIMITS_ENABLED); | |
19ece546 JK |
1000 | } |
1001 | ||
1002 | /* Handle quota off quotactl */ | |
307ae18a | 1003 | static int ocfs2_quota_off(struct super_block *sb, int type) |
19ece546 | 1004 | { |
0f0dd62f | 1005 | return dquot_disable(sb, type, DQUOT_LIMITS_ENABLED); |
19ece546 JK |
1006 | } |
1007 | ||
0d54b217 | 1008 | static const struct quotactl_ops ocfs2_quotactl_ops = { |
f00c9e44 | 1009 | .quota_on_meta = ocfs2_quota_on, |
19ece546 | 1010 | .quota_off = ocfs2_quota_off, |
287a8095 CH |
1011 | .quota_sync = dquot_quota_sync, |
1012 | .get_info = dquot_get_dqinfo, | |
1013 | .set_info = dquot_set_dqinfo, | |
1014 | .get_dqblk = dquot_get_dqblk, | |
1015 | .set_dqblk = dquot_set_dqblk, | |
19ece546 JK |
1016 | }; |
1017 | ||
ccd979bd MF |
1018 | static int ocfs2_fill_super(struct super_block *sb, void *data, int silent) |
1019 | { | |
1020 | struct dentry *root; | |
1021 | int status, sector_size; | |
c0123ade | 1022 | struct mount_options parsed_options; |
ccd979bd MF |
1023 | struct inode *inode = NULL; |
1024 | struct ocfs2_super *osb = NULL; | |
1025 | struct buffer_head *bh = NULL; | |
c271c5c2 | 1026 | char nodestr[8]; |
73be192b | 1027 | struct ocfs2_blockcheck_stats stats; |
ccd979bd | 1028 | |
32a42d39 | 1029 | trace_ocfs2_fill_super(sb, data, silent); |
ccd979bd | 1030 | |
c0123ade | 1031 | if (!ocfs2_parse_options(sb, data, &parsed_options, 0)) { |
ccd979bd MF |
1032 | status = -EINVAL; |
1033 | goto read_super_error; | |
1034 | } | |
1035 | ||
1036 | /* probe for superblock */ | |
73be192b | 1037 | status = ocfs2_sb_probe(sb, &bh, §or_size, &stats); |
ccd979bd MF |
1038 | if (status < 0) { |
1039 | mlog(ML_ERROR, "superblock probe failed!\n"); | |
1040 | goto read_super_error; | |
1041 | } | |
1042 | ||
73be192b | 1043 | status = ocfs2_initialize_super(sb, bh, sector_size, &stats); |
ccd979bd MF |
1044 | osb = OCFS2_SB(sb); |
1045 | if (status < 0) { | |
1046 | mlog_errno(status); | |
1047 | goto read_super_error; | |
1048 | } | |
1049 | brelse(bh); | |
1050 | bh = NULL; | |
a68979b8 | 1051 | |
5297aad8 JK |
1052 | if (!ocfs2_check_set_options(sb, &parsed_options)) { |
1053 | status = -EINVAL; | |
1054 | goto read_super_error; | |
1055 | } | |
c0123ade TY |
1056 | osb->s_mount_opt = parsed_options.mount_opt; |
1057 | osb->s_atime_quantum = parsed_options.atime_quantum; | |
1058 | osb->preferred_slot = parsed_options.slot; | |
d147b3d6 | 1059 | osb->osb_commit_interval = parsed_options.commit_interval; |
73c8a800 MF |
1060 | |
1061 | ocfs2_la_set_sizes(osb, parsed_options.localalloc_opt); | |
d02f00cc | 1062 | osb->osb_resv_level = parsed_options.resv_level; |
83f92318 MF |
1063 | osb->osb_dir_resv_level = parsed_options.resv_level; |
1064 | if (parsed_options.dir_resv_level == -1) | |
1065 | osb->osb_dir_resv_level = parsed_options.resv_level; | |
1066 | else | |
1067 | osb->osb_dir_resv_level = parsed_options.dir_resv_level; | |
ccd979bd | 1068 | |
b61817e1 JB |
1069 | status = ocfs2_verify_userspace_stack(osb, &parsed_options); |
1070 | if (status) | |
1071 | goto read_super_error; | |
1072 | ||
ccd979bd MF |
1073 | sb->s_magic = OCFS2_SUPER_MAGIC; |
1074 | ||
9e1f1de0 | 1075 | sb->s_flags = (sb->s_flags & ~(MS_POSIXACL | MS_NOSEC)) | |
a68979b8 TY |
1076 | ((osb->s_mount_opt & OCFS2_MOUNT_POSIX_ACL) ? MS_POSIXACL : 0); |
1077 | ||
ccd979bd MF |
1078 | /* Hard readonly mode only if: bdev_read_only, MS_RDONLY, |
1079 | * heartbeat=none */ | |
1080 | if (bdev_read_only(sb->s_bdev)) { | |
1081 | if (!(sb->s_flags & MS_RDONLY)) { | |
1082 | status = -EACCES; | |
1083 | mlog(ML_ERROR, "Readonly device detected but readonly " | |
1084 | "mount was not specified.\n"); | |
1085 | goto read_super_error; | |
1086 | } | |
1087 | ||
1088 | /* You should not be able to start a local heartbeat | |
1089 | * on a readonly device. */ | |
1090 | if (osb->s_mount_opt & OCFS2_MOUNT_HB_LOCAL) { | |
1091 | status = -EROFS; | |
1092 | mlog(ML_ERROR, "Local heartbeat specified on readonly " | |
1093 | "device.\n"); | |
1094 | goto read_super_error; | |
1095 | } | |
1096 | ||
1097 | status = ocfs2_check_journals_nolocks(osb); | |
1098 | if (status < 0) { | |
1099 | if (status == -EROFS) | |
1100 | mlog(ML_ERROR, "Recovery required on readonly " | |
1101 | "file system, but write access is " | |
1102 | "unavailable.\n"); | |
1103 | else | |
2bd63216 | 1104 | mlog_errno(status); |
ccd979bd MF |
1105 | goto read_super_error; |
1106 | } | |
1107 | ||
1108 | ocfs2_set_ro_flag(osb, 1); | |
1109 | ||
619c200d SM |
1110 | printk(KERN_NOTICE "ocfs2: Readonly device (%s) detected. " |
1111 | "Cluster services will not be used for this mount. " | |
1112 | "Recovery will be skipped.\n", osb->dev_str); | |
ccd979bd MF |
1113 | } |
1114 | ||
1115 | if (!ocfs2_is_hard_readonly(osb)) { | |
ccd979bd MF |
1116 | if (sb->s_flags & MS_RDONLY) |
1117 | ocfs2_set_ro_flag(osb, 0); | |
1118 | } | |
1119 | ||
c271c5c2 SM |
1120 | status = ocfs2_verify_heartbeat(osb); |
1121 | if (status < 0) { | |
1122 | mlog_errno(status); | |
1123 | goto read_super_error; | |
1124 | } | |
1125 | ||
ccd979bd MF |
1126 | osb->osb_debug_root = debugfs_create_dir(osb->uuid_str, |
1127 | ocfs2_debugfs_root); | |
1128 | if (!osb->osb_debug_root) { | |
1129 | status = -EINVAL; | |
1130 | mlog(ML_ERROR, "Unable to create per-mount debugfs root.\n"); | |
1131 | goto read_super_error; | |
1132 | } | |
1133 | ||
50397507 SM |
1134 | osb->osb_ctxt = debugfs_create_file("fs_state", S_IFREG|S_IRUSR, |
1135 | osb->osb_debug_root, | |
1136 | osb, | |
1137 | &ocfs2_osb_debug_fops); | |
1138 | if (!osb->osb_ctxt) { | |
1139 | status = -EINVAL; | |
1140 | mlog_errno(status); | |
1141 | goto read_super_error; | |
1142 | } | |
1143 | ||
73be192b JB |
1144 | if (ocfs2_meta_ecc(osb)) { |
1145 | status = ocfs2_blockcheck_stats_debugfs_install( | |
1146 | &osb->osb_ecc_stats, | |
1147 | osb->osb_debug_root); | |
1148 | if (status) { | |
1149 | mlog(ML_ERROR, | |
1150 | "Unable to create blockcheck statistics " | |
1151 | "files\n"); | |
1152 | goto read_super_error; | |
1153 | } | |
1154 | } | |
1155 | ||
ccd979bd MF |
1156 | status = ocfs2_mount_volume(sb); |
1157 | if (osb->root_inode) | |
1158 | inode = igrab(osb->root_inode); | |
1159 | ||
1160 | if (status < 0) | |
1161 | goto read_super_error; | |
1162 | ||
1163 | if (!inode) { | |
1164 | status = -EIO; | |
1165 | mlog_errno(status); | |
1166 | goto read_super_error; | |
1167 | } | |
1168 | ||
1169 | root = d_alloc_root(inode); | |
1170 | if (!root) { | |
1171 | status = -ENOMEM; | |
1172 | mlog_errno(status); | |
1173 | goto read_super_error; | |
1174 | } | |
1175 | ||
1176 | sb->s_root = root; | |
1177 | ||
1178 | ocfs2_complete_mount_recovery(osb); | |
1179 | ||
c271c5c2 SM |
1180 | if (ocfs2_mount_local(osb)) |
1181 | snprintf(nodestr, sizeof(nodestr), "local"); | |
1182 | else | |
19fdb624 | 1183 | snprintf(nodestr, sizeof(nodestr), "%u", osb->node_num); |
c271c5c2 SM |
1184 | |
1185 | printk(KERN_INFO "ocfs2: Mounting device (%s) on (node %s, slot %d) " | |
781ee3e2 | 1186 | "with %s data mode.\n", |
c271c5c2 | 1187 | osb->dev_str, nodestr, osb->slot_num, |
ccd979bd MF |
1188 | osb->s_mount_opt & OCFS2_MOUNT_DATA_WRITEBACK ? "writeback" : |
1189 | "ordered"); | |
1190 | ||
1191 | atomic_set(&osb->vol_state, VOLUME_MOUNTED); | |
1192 | wake_up(&osb->osb_mount_event); | |
1193 | ||
19ece546 JK |
1194 | /* Now we can initialize quotas because we can afford to wait |
1195 | * for cluster locks recovery now. That also means that truncation | |
1196 | * log recovery can happen but that waits for proper quota setup */ | |
1197 | if (!(sb->s_flags & MS_RDONLY)) { | |
1198 | status = ocfs2_enable_quotas(osb); | |
1199 | if (status < 0) { | |
1200 | /* We have to err-out specially here because | |
1201 | * s_root is already set */ | |
1202 | mlog_errno(status); | |
1203 | atomic_set(&osb->vol_state, VOLUME_DISABLED); | |
1204 | wake_up(&osb->osb_mount_event); | |
19ece546 JK |
1205 | return status; |
1206 | } | |
1207 | } | |
1208 | ||
1209 | ocfs2_complete_quota_recovery(osb); | |
1210 | ||
1211 | /* Now we wake up again for processes waiting for quotas */ | |
1212 | atomic_set(&osb->vol_state, VOLUME_MOUNTED_QUOTAS); | |
1213 | wake_up(&osb->osb_mount_event); | |
1214 | ||
df152c24 | 1215 | /* Start this when the mount is almost sure of being successful */ |
8b712cd5 | 1216 | ocfs2_orphan_scan_start(osb); |
df152c24 | 1217 | |
ccd979bd MF |
1218 | return status; |
1219 | ||
1220 | read_super_error: | |
a81cb88b | 1221 | brelse(bh); |
ccd979bd MF |
1222 | |
1223 | if (inode) | |
1224 | iput(inode); | |
1225 | ||
1226 | if (osb) { | |
1227 | atomic_set(&osb->vol_state, VOLUME_DISABLED); | |
1228 | wake_up(&osb->osb_mount_event); | |
1229 | ocfs2_dismount_volume(sb, 1); | |
1230 | } | |
1231 | ||
c1e8d35e TM |
1232 | if (status) |
1233 | mlog_errno(status); | |
ccd979bd MF |
1234 | return status; |
1235 | } | |
1236 | ||
152a0836 | 1237 | static struct dentry *ocfs2_mount(struct file_system_type *fs_type, |
454e2398 DH |
1238 | int flags, |
1239 | const char *dev_name, | |
152a0836 | 1240 | void *data) |
ccd979bd | 1241 | { |
152a0836 | 1242 | return mount_bdev(fs_type, flags, dev_name, data, ocfs2_fill_super); |
ccd979bd MF |
1243 | } |
1244 | ||
f7b1aa69 JK |
1245 | static void ocfs2_kill_sb(struct super_block *sb) |
1246 | { | |
1247 | struct ocfs2_super *osb = OCFS2_SB(sb); | |
1248 | ||
5fd13189 JK |
1249 | /* Failed mount? */ |
1250 | if (!osb || atomic_read(&osb->vol_state) == VOLUME_DISABLED) | |
1251 | goto out; | |
1252 | ||
f7b1aa69 JK |
1253 | /* Prevent further queueing of inode drop events */ |
1254 | spin_lock(&dentry_list_lock); | |
1255 | ocfs2_set_osb_flag(osb, OCFS2_OSB_DROP_DENTRY_LOCK_IMMED); | |
1256 | spin_unlock(&dentry_list_lock); | |
1257 | /* Wait for work to finish and/or remove it */ | |
1258 | cancel_work_sync(&osb->dentry_lock_work); | |
5fd13189 | 1259 | out: |
f7b1aa69 JK |
1260 | kill_block_super(sb); |
1261 | } | |
1262 | ||
ccd979bd MF |
1263 | static struct file_system_type ocfs2_fs_type = { |
1264 | .owner = THIS_MODULE, | |
1265 | .name = "ocfs2", | |
152a0836 | 1266 | .mount = ocfs2_mount, |
f7b1aa69 JK |
1267 | .kill_sb = ocfs2_kill_sb, |
1268 | ||
1ba9da2f | 1269 | .fs_flags = FS_REQUIRES_DEV|FS_RENAME_DOES_D_MOVE, |
ccd979bd MF |
1270 | .next = NULL |
1271 | }; | |
1272 | ||
5297aad8 JK |
1273 | static int ocfs2_check_set_options(struct super_block *sb, |
1274 | struct mount_options *options) | |
1275 | { | |
1276 | if (options->mount_opt & OCFS2_MOUNT_USRQUOTA && | |
1277 | !OCFS2_HAS_RO_COMPAT_FEATURE(sb, | |
1278 | OCFS2_FEATURE_RO_COMPAT_USRQUOTA)) { | |
1279 | mlog(ML_ERROR, "User quotas were requested, but this " | |
1280 | "filesystem does not have the feature enabled.\n"); | |
1281 | return 0; | |
1282 | } | |
1283 | if (options->mount_opt & OCFS2_MOUNT_GRPQUOTA && | |
1284 | !OCFS2_HAS_RO_COMPAT_FEATURE(sb, | |
1285 | OCFS2_FEATURE_RO_COMPAT_GRPQUOTA)) { | |
1286 | mlog(ML_ERROR, "Group quotas were requested, but this " | |
1287 | "filesystem does not have the feature enabled.\n"); | |
1288 | return 0; | |
1289 | } | |
1290 | if (options->mount_opt & OCFS2_MOUNT_POSIX_ACL && | |
1291 | !OCFS2_HAS_INCOMPAT_FEATURE(sb, OCFS2_FEATURE_INCOMPAT_XATTR)) { | |
1292 | mlog(ML_ERROR, "ACL support requested but extended attributes " | |
1293 | "feature is not enabled\n"); | |
1294 | return 0; | |
1295 | } | |
1296 | /* No ACL setting specified? Use XATTR feature... */ | |
1297 | if (!(options->mount_opt & (OCFS2_MOUNT_POSIX_ACL | | |
1298 | OCFS2_MOUNT_NO_POSIX_ACL))) { | |
1299 | if (OCFS2_HAS_INCOMPAT_FEATURE(sb, OCFS2_FEATURE_INCOMPAT_XATTR)) | |
1300 | options->mount_opt |= OCFS2_MOUNT_POSIX_ACL; | |
1301 | else | |
1302 | options->mount_opt |= OCFS2_MOUNT_NO_POSIX_ACL; | |
1303 | } | |
1304 | return 1; | |
1305 | } | |
1306 | ||
ccd979bd MF |
1307 | static int ocfs2_parse_options(struct super_block *sb, |
1308 | char *options, | |
c0123ade | 1309 | struct mount_options *mopt, |
ccd979bd MF |
1310 | int is_remount) |
1311 | { | |
52c303c5 | 1312 | int status, user_stack = 0; |
ccd979bd | 1313 | char *p; |
2c442719 | 1314 | u32 tmp; |
ccd979bd | 1315 | |
32a42d39 | 1316 | trace_ocfs2_parse_options(is_remount, options ? options : "(none)"); |
ccd979bd | 1317 | |
d147b3d6 | 1318 | mopt->commit_interval = 0; |
4b37fcb7 | 1319 | mopt->mount_opt = OCFS2_MOUNT_NOINTR; |
c0123ade TY |
1320 | mopt->atime_quantum = OCFS2_DEFAULT_ATIME_QUANTUM; |
1321 | mopt->slot = OCFS2_INVALID_SLOT; | |
73c8a800 | 1322 | mopt->localalloc_opt = -1; |
b61817e1 | 1323 | mopt->cluster_stack[0] = '\0'; |
d02f00cc | 1324 | mopt->resv_level = OCFS2_DEFAULT_RESV_LEVEL; |
83f92318 | 1325 | mopt->dir_resv_level = -1; |
ccd979bd MF |
1326 | |
1327 | if (!options) { | |
1328 | status = 1; | |
1329 | goto bail; | |
1330 | } | |
1331 | ||
1332 | while ((p = strsep(&options, ",")) != NULL) { | |
1333 | int token, option; | |
1334 | substring_t args[MAX_OPT_ARGS]; | |
1335 | ||
1336 | if (!*p) | |
1337 | continue; | |
1338 | ||
1339 | token = match_token(p, tokens, args); | |
1340 | switch (token) { | |
1341 | case Opt_hb_local: | |
c0123ade | 1342 | mopt->mount_opt |= OCFS2_MOUNT_HB_LOCAL; |
ccd979bd MF |
1343 | break; |
1344 | case Opt_hb_none: | |
2c442719 SM |
1345 | mopt->mount_opt |= OCFS2_MOUNT_HB_NONE; |
1346 | break; | |
1347 | case Opt_hb_global: | |
1348 | mopt->mount_opt |= OCFS2_MOUNT_HB_GLOBAL; | |
ccd979bd MF |
1349 | break; |
1350 | case Opt_barrier: | |
1351 | if (match_int(&args[0], &option)) { | |
1352 | status = 0; | |
1353 | goto bail; | |
1354 | } | |
1355 | if (option) | |
c0123ade | 1356 | mopt->mount_opt |= OCFS2_MOUNT_BARRIER; |
ccd979bd | 1357 | else |
c0123ade | 1358 | mopt->mount_opt &= ~OCFS2_MOUNT_BARRIER; |
ccd979bd MF |
1359 | break; |
1360 | case Opt_intr: | |
c0123ade | 1361 | mopt->mount_opt &= ~OCFS2_MOUNT_NOINTR; |
ccd979bd MF |
1362 | break; |
1363 | case Opt_nointr: | |
c0123ade | 1364 | mopt->mount_opt |= OCFS2_MOUNT_NOINTR; |
ccd979bd MF |
1365 | break; |
1366 | case Opt_err_panic: | |
c0123ade | 1367 | mopt->mount_opt |= OCFS2_MOUNT_ERRORS_PANIC; |
ccd979bd MF |
1368 | break; |
1369 | case Opt_err_ro: | |
c0123ade | 1370 | mopt->mount_opt &= ~OCFS2_MOUNT_ERRORS_PANIC; |
ccd979bd MF |
1371 | break; |
1372 | case Opt_data_ordered: | |
c0123ade | 1373 | mopt->mount_opt &= ~OCFS2_MOUNT_DATA_WRITEBACK; |
ccd979bd MF |
1374 | break; |
1375 | case Opt_data_writeback: | |
c0123ade | 1376 | mopt->mount_opt |= OCFS2_MOUNT_DATA_WRITEBACK; |
ccd979bd | 1377 | break; |
cf1d6c76 TY |
1378 | case Opt_user_xattr: |
1379 | mopt->mount_opt &= ~OCFS2_MOUNT_NOUSERXATTR; | |
1380 | break; | |
1381 | case Opt_nouser_xattr: | |
1382 | mopt->mount_opt |= OCFS2_MOUNT_NOUSERXATTR; | |
1383 | break; | |
7f1a37e3 TY |
1384 | case Opt_atime_quantum: |
1385 | if (match_int(&args[0], &option)) { | |
1386 | status = 0; | |
1387 | goto bail; | |
1388 | } | |
1389 | if (option >= 0) | |
c0123ade | 1390 | mopt->atime_quantum = option; |
7f1a37e3 | 1391 | break; |
baf4661a SM |
1392 | case Opt_slot: |
1393 | option = 0; | |
1394 | if (match_int(&args[0], &option)) { | |
1395 | status = 0; | |
1396 | goto bail; | |
1397 | } | |
1398 | if (option) | |
c0123ade | 1399 | mopt->slot = (s16)option; |
baf4661a | 1400 | break; |
d147b3d6 MF |
1401 | case Opt_commit: |
1402 | option = 0; | |
1403 | if (match_int(&args[0], &option)) { | |
1404 | status = 0; | |
1405 | goto bail; | |
1406 | } | |
1407 | if (option < 0) | |
1408 | return 0; | |
1409 | if (option == 0) | |
2b4e30fb | 1410 | option = JBD2_DEFAULT_MAX_COMMIT_AGE; |
d147b3d6 MF |
1411 | mopt->commit_interval = HZ * option; |
1412 | break; | |
2fbe8d1e SM |
1413 | case Opt_localalloc: |
1414 | option = 0; | |
1415 | if (match_int(&args[0], &option)) { | |
1416 | status = 0; | |
1417 | goto bail; | |
1418 | } | |
73c8a800 | 1419 | if (option >= 0) |
2fbe8d1e SM |
1420 | mopt->localalloc_opt = option; |
1421 | break; | |
53fc622b MF |
1422 | case Opt_localflocks: |
1423 | /* | |
1424 | * Changing this during remount could race | |
1425 | * flock() requests, or "unbalance" existing | |
1426 | * ones (e.g., a lock is taken in one mode but | |
1427 | * dropped in the other). If users care enough | |
1428 | * to flip locking modes during remount, we | |
1429 | * could add a "local" flag to individual | |
1430 | * flock structures for proper tracking of | |
1431 | * state. | |
1432 | */ | |
1433 | if (!is_remount) | |
1434 | mopt->mount_opt |= OCFS2_MOUNT_LOCALFLOCKS; | |
1435 | break; | |
b61817e1 JB |
1436 | case Opt_stack: |
1437 | /* Check both that the option we were passed | |
1438 | * is of the right length and that it is a proper | |
1439 | * string of the right length. | |
1440 | */ | |
1441 | if (((args[0].to - args[0].from) != | |
1442 | OCFS2_STACK_LABEL_LEN) || | |
1443 | (strnlen(args[0].from, | |
1444 | OCFS2_STACK_LABEL_LEN) != | |
1445 | OCFS2_STACK_LABEL_LEN)) { | |
1446 | mlog(ML_ERROR, | |
1447 | "Invalid cluster_stack option\n"); | |
1448 | status = 0; | |
1449 | goto bail; | |
1450 | } | |
1451 | memcpy(mopt->cluster_stack, args[0].from, | |
1452 | OCFS2_STACK_LABEL_LEN); | |
1453 | mopt->cluster_stack[OCFS2_STACK_LABEL_LEN] = '\0'; | |
52c303c5 MF |
1454 | /* |
1455 | * Open code the memcmp here as we don't have | |
1456 | * an osb to pass to | |
1457 | * ocfs2_userspace_stack(). | |
1458 | */ | |
1459 | if (memcmp(mopt->cluster_stack, | |
1460 | OCFS2_CLASSIC_CLUSTER_STACK, | |
1461 | OCFS2_STACK_LABEL_LEN)) | |
1462 | user_stack = 1; | |
b61817e1 | 1463 | break; |
12462f1d JB |
1464 | case Opt_inode64: |
1465 | mopt->mount_opt |= OCFS2_MOUNT_INODE64; | |
1466 | break; | |
19ece546 | 1467 | case Opt_usrquota: |
19ece546 JK |
1468 | mopt->mount_opt |= OCFS2_MOUNT_USRQUOTA; |
1469 | break; | |
1470 | case Opt_grpquota: | |
19ece546 JK |
1471 | mopt->mount_opt |= OCFS2_MOUNT_GRPQUOTA; |
1472 | break; | |
7bdb0d18 TY |
1473 | case Opt_coherency_buffered: |
1474 | mopt->mount_opt |= OCFS2_MOUNT_COHERENCY_BUFFERED; | |
1475 | break; | |
1476 | case Opt_coherency_full: | |
1477 | mopt->mount_opt &= ~OCFS2_MOUNT_COHERENCY_BUFFERED; | |
1478 | break; | |
a68979b8 TY |
1479 | case Opt_acl: |
1480 | mopt->mount_opt |= OCFS2_MOUNT_POSIX_ACL; | |
5297aad8 | 1481 | mopt->mount_opt &= ~OCFS2_MOUNT_NO_POSIX_ACL; |
a68979b8 TY |
1482 | break; |
1483 | case Opt_noacl: | |
5297aad8 | 1484 | mopt->mount_opt |= OCFS2_MOUNT_NO_POSIX_ACL; |
a68979b8 TY |
1485 | mopt->mount_opt &= ~OCFS2_MOUNT_POSIX_ACL; |
1486 | break; | |
d02f00cc MF |
1487 | case Opt_resv_level: |
1488 | if (is_remount) | |
1489 | break; | |
1490 | if (match_int(&args[0], &option)) { | |
1491 | status = 0; | |
1492 | goto bail; | |
1493 | } | |
1494 | if (option >= OCFS2_MIN_RESV_LEVEL && | |
1495 | option < OCFS2_MAX_RESV_LEVEL) | |
1496 | mopt->resv_level = option; | |
1497 | break; | |
83f92318 MF |
1498 | case Opt_dir_resv_level: |
1499 | if (is_remount) | |
1500 | break; | |
1501 | if (match_int(&args[0], &option)) { | |
1502 | status = 0; | |
1503 | goto bail; | |
1504 | } | |
1505 | if (option >= OCFS2_MIN_RESV_LEVEL && | |
1506 | option < OCFS2_MAX_RESV_LEVEL) | |
1507 | mopt->dir_resv_level = option; | |
1508 | break; | |
ccd979bd MF |
1509 | default: |
1510 | mlog(ML_ERROR, | |
1511 | "Unrecognized mount option \"%s\" " | |
1512 | "or missing value\n", p); | |
1513 | status = 0; | |
1514 | goto bail; | |
1515 | } | |
1516 | } | |
1517 | ||
52c303c5 MF |
1518 | if (user_stack == 0) { |
1519 | /* Ensure only one heartbeat mode */ | |
1520 | tmp = mopt->mount_opt & (OCFS2_MOUNT_HB_LOCAL | | |
1521 | OCFS2_MOUNT_HB_GLOBAL | | |
1522 | OCFS2_MOUNT_HB_NONE); | |
1523 | if (hweight32(tmp) != 1) { | |
1524 | mlog(ML_ERROR, "Invalid heartbeat mount options\n"); | |
1525 | status = 0; | |
1526 | goto bail; | |
1527 | } | |
2c442719 SM |
1528 | } |
1529 | ||
ccd979bd MF |
1530 | status = 1; |
1531 | ||
1532 | bail: | |
ccd979bd MF |
1533 | return status; |
1534 | } | |
1535 | ||
34c80b1d | 1536 | static int ocfs2_show_options(struct seq_file *s, struct dentry *root) |
d550071c | 1537 | { |
34c80b1d | 1538 | struct ocfs2_super *osb = OCFS2_SB(root->d_sb); |
d550071c | 1539 | unsigned long opts = osb->s_mount_opt; |
ebcee4b5 | 1540 | unsigned int local_alloc_megs; |
d550071c | 1541 | |
2c442719 SM |
1542 | if (opts & (OCFS2_MOUNT_HB_LOCAL | OCFS2_MOUNT_HB_GLOBAL)) { |
1543 | seq_printf(s, ",_netdev"); | |
1544 | if (opts & OCFS2_MOUNT_HB_LOCAL) | |
1545 | seq_printf(s, ",%s", OCFS2_HB_LOCAL); | |
1546 | else | |
1547 | seq_printf(s, ",%s", OCFS2_HB_GLOBAL); | |
1548 | } else | |
1549 | seq_printf(s, ",%s", OCFS2_HB_NONE); | |
d550071c SM |
1550 | |
1551 | if (opts & OCFS2_MOUNT_NOINTR) | |
1552 | seq_printf(s, ",nointr"); | |
1553 | ||
1554 | if (opts & OCFS2_MOUNT_DATA_WRITEBACK) | |
1555 | seq_printf(s, ",data=writeback"); | |
1556 | else | |
1557 | seq_printf(s, ",data=ordered"); | |
1558 | ||
1559 | if (opts & OCFS2_MOUNT_BARRIER) | |
1560 | seq_printf(s, ",barrier=1"); | |
1561 | ||
1562 | if (opts & OCFS2_MOUNT_ERRORS_PANIC) | |
1563 | seq_printf(s, ",errors=panic"); | |
1564 | else | |
1565 | seq_printf(s, ",errors=remount-ro"); | |
1566 | ||
1567 | if (osb->preferred_slot != OCFS2_INVALID_SLOT) | |
1568 | seq_printf(s, ",preferred_slot=%d", osb->preferred_slot); | |
1569 | ||
34c80b1d | 1570 | seq_printf(s, ",atime_quantum=%u", osb->s_atime_quantum); |
d550071c | 1571 | |
d147b3d6 MF |
1572 | if (osb->osb_commit_interval) |
1573 | seq_printf(s, ",commit=%u", | |
1574 | (unsigned) (osb->osb_commit_interval / HZ)); | |
1575 | ||
ebcee4b5 | 1576 | local_alloc_megs = osb->local_alloc_bits >> (20 - osb->s_clustersize_bits); |
6b82021b | 1577 | if (local_alloc_megs != ocfs2_la_default_mb(osb)) |
ebcee4b5 | 1578 | seq_printf(s, ",localalloc=%d", local_alloc_megs); |
2fbe8d1e | 1579 | |
53fc622b MF |
1580 | if (opts & OCFS2_MOUNT_LOCALFLOCKS) |
1581 | seq_printf(s, ",localflocks,"); | |
1582 | ||
b61817e1 JB |
1583 | if (osb->osb_cluster_stack[0]) |
1584 | seq_printf(s, ",cluster_stack=%.*s", OCFS2_STACK_LABEL_LEN, | |
1585 | osb->osb_cluster_stack); | |
19ece546 JK |
1586 | if (opts & OCFS2_MOUNT_USRQUOTA) |
1587 | seq_printf(s, ",usrquota"); | |
1588 | if (opts & OCFS2_MOUNT_GRPQUOTA) | |
1589 | seq_printf(s, ",grpquota"); | |
b61817e1 | 1590 | |
7bdb0d18 TY |
1591 | if (opts & OCFS2_MOUNT_COHERENCY_BUFFERED) |
1592 | seq_printf(s, ",coherency=buffered"); | |
1593 | else | |
1594 | seq_printf(s, ",coherency=full"); | |
1595 | ||
b0f73cfc SM |
1596 | if (opts & OCFS2_MOUNT_NOUSERXATTR) |
1597 | seq_printf(s, ",nouser_xattr"); | |
1598 | else | |
1599 | seq_printf(s, ",user_xattr"); | |
1600 | ||
12462f1d JB |
1601 | if (opts & OCFS2_MOUNT_INODE64) |
1602 | seq_printf(s, ",inode64"); | |
1603 | ||
a68979b8 TY |
1604 | if (opts & OCFS2_MOUNT_POSIX_ACL) |
1605 | seq_printf(s, ",acl"); | |
1606 | else | |
1607 | seq_printf(s, ",noacl"); | |
a68979b8 | 1608 | |
d02f00cc MF |
1609 | if (osb->osb_resv_level != OCFS2_DEFAULT_RESV_LEVEL) |
1610 | seq_printf(s, ",resv_level=%d", osb->osb_resv_level); | |
1611 | ||
83f92318 MF |
1612 | if (osb->osb_dir_resv_level != osb->osb_resv_level) |
1613 | seq_printf(s, ",dir_resv_level=%d", osb->osb_resv_level); | |
1614 | ||
d550071c SM |
1615 | return 0; |
1616 | } | |
1617 | ||
a11f7e63 MF |
1618 | wait_queue_head_t ocfs2__ioend_wq[OCFS2_IOEND_WQ_HASH_SZ]; |
1619 | ||
ccd979bd MF |
1620 | static int __init ocfs2_init(void) |
1621 | { | |
a11f7e63 | 1622 | int status, i; |
ccd979bd | 1623 | |
ccd979bd MF |
1624 | ocfs2_print_version(); |
1625 | ||
a11f7e63 MF |
1626 | for (i = 0; i < OCFS2_IOEND_WQ_HASH_SZ; i++) |
1627 | init_waitqueue_head(&ocfs2__ioend_wq[i]); | |
1628 | ||
ccd979bd MF |
1629 | status = init_ocfs2_uptodate_cache(); |
1630 | if (status < 0) { | |
1631 | mlog_errno(status); | |
1632 | goto leave; | |
1633 | } | |
1634 | ||
1635 | status = ocfs2_initialize_mem_caches(); | |
1636 | if (status < 0) { | |
1637 | mlog_errno(status); | |
1638 | goto leave; | |
1639 | } | |
1640 | ||
1641 | ocfs2_wq = create_singlethread_workqueue("ocfs2_wq"); | |
1642 | if (!ocfs2_wq) { | |
1643 | status = -ENOMEM; | |
1644 | goto leave; | |
1645 | } | |
1646 | ||
ccd979bd MF |
1647 | ocfs2_debugfs_root = debugfs_create_dir("ocfs2", NULL); |
1648 | if (!ocfs2_debugfs_root) { | |
1649 | status = -EFAULT; | |
1650 | mlog(ML_ERROR, "Unable to create ocfs2 debugfs root.\n"); | |
1651 | } | |
1652 | ||
63e0c48a JB |
1653 | ocfs2_set_locking_protocol(); |
1654 | ||
9e33d69f | 1655 | status = register_quota_format(&ocfs2_quota_format); |
ccd979bd MF |
1656 | leave: |
1657 | if (status < 0) { | |
1658 | ocfs2_free_mem_caches(); | |
1659 | exit_ocfs2_uptodate_cache(); | |
c1e8d35e | 1660 | mlog_errno(status); |
ccd979bd MF |
1661 | } |
1662 | ||
ccd979bd MF |
1663 | if (status >= 0) { |
1664 | return register_filesystem(&ocfs2_fs_type); | |
1665 | } else | |
1666 | return -1; | |
1667 | } | |
1668 | ||
1669 | static void __exit ocfs2_exit(void) | |
1670 | { | |
ccd979bd MF |
1671 | if (ocfs2_wq) { |
1672 | flush_workqueue(ocfs2_wq); | |
1673 | destroy_workqueue(ocfs2_wq); | |
1674 | } | |
1675 | ||
9e33d69f JK |
1676 | unregister_quota_format(&ocfs2_quota_format); |
1677 | ||
ccd979bd MF |
1678 | debugfs_remove(ocfs2_debugfs_root); |
1679 | ||
1680 | ocfs2_free_mem_caches(); | |
1681 | ||
1682 | unregister_filesystem(&ocfs2_fs_type); | |
1683 | ||
ccd979bd | 1684 | exit_ocfs2_uptodate_cache(); |
ccd979bd MF |
1685 | } |
1686 | ||
1687 | static void ocfs2_put_super(struct super_block *sb) | |
1688 | { | |
32a42d39 | 1689 | trace_ocfs2_put_super(sb); |
ccd979bd MF |
1690 | |
1691 | ocfs2_sync_blockdev(sb); | |
1692 | ocfs2_dismount_volume(sb, 0); | |
ccd979bd MF |
1693 | } |
1694 | ||
726c3342 | 1695 | static int ocfs2_statfs(struct dentry *dentry, struct kstatfs *buf) |
ccd979bd MF |
1696 | { |
1697 | struct ocfs2_super *osb; | |
1698 | u32 numbits, freebits; | |
1699 | int status; | |
1700 | struct ocfs2_dinode *bm_lock; | |
1701 | struct buffer_head *bh = NULL; | |
1702 | struct inode *inode = NULL; | |
1703 | ||
32a42d39 | 1704 | trace_ocfs2_statfs(dentry->d_sb, buf); |
ccd979bd | 1705 | |
726c3342 | 1706 | osb = OCFS2_SB(dentry->d_sb); |
ccd979bd MF |
1707 | |
1708 | inode = ocfs2_get_system_file_inode(osb, | |
1709 | GLOBAL_BITMAP_SYSTEM_INODE, | |
1710 | OCFS2_INVALID_SLOT); | |
1711 | if (!inode) { | |
1712 | mlog(ML_ERROR, "failed to get bitmap inode\n"); | |
1713 | status = -EIO; | |
1714 | goto bail; | |
1715 | } | |
1716 | ||
e63aecb6 | 1717 | status = ocfs2_inode_lock(inode, &bh, 0); |
ccd979bd MF |
1718 | if (status < 0) { |
1719 | mlog_errno(status); | |
1720 | goto bail; | |
1721 | } | |
1722 | ||
1723 | bm_lock = (struct ocfs2_dinode *) bh->b_data; | |
1724 | ||
1725 | numbits = le32_to_cpu(bm_lock->id1.bitmap1.i_total); | |
1726 | freebits = numbits - le32_to_cpu(bm_lock->id1.bitmap1.i_used); | |
1727 | ||
1728 | buf->f_type = OCFS2_SUPER_MAGIC; | |
726c3342 | 1729 | buf->f_bsize = dentry->d_sb->s_blocksize; |
ccd979bd MF |
1730 | buf->f_namelen = OCFS2_MAX_FILENAME_LEN; |
1731 | buf->f_blocks = ((sector_t) numbits) * | |
1732 | (osb->s_clustersize >> osb->sb->s_blocksize_bits); | |
1733 | buf->f_bfree = ((sector_t) freebits) * | |
1734 | (osb->s_clustersize >> osb->sb->s_blocksize_bits); | |
1735 | buf->f_bavail = buf->f_bfree; | |
1736 | buf->f_files = numbits; | |
1737 | buf->f_ffree = freebits; | |
837711f8 CL |
1738 | buf->f_fsid.val[0] = crc32_le(0, osb->uuid_str, OCFS2_VOL_UUID_LEN) |
1739 | & 0xFFFFFFFFUL; | |
1740 | buf->f_fsid.val[1] = crc32_le(0, osb->uuid_str + OCFS2_VOL_UUID_LEN, | |
1741 | OCFS2_VOL_UUID_LEN) & 0xFFFFFFFFUL; | |
ccd979bd MF |
1742 | |
1743 | brelse(bh); | |
1744 | ||
e63aecb6 | 1745 | ocfs2_inode_unlock(inode, 0); |
ccd979bd MF |
1746 | status = 0; |
1747 | bail: | |
1748 | if (inode) | |
1749 | iput(inode); | |
1750 | ||
c1e8d35e TM |
1751 | if (status) |
1752 | mlog_errno(status); | |
ccd979bd MF |
1753 | |
1754 | return status; | |
1755 | } | |
1756 | ||
51cc5068 | 1757 | static void ocfs2_inode_init_once(void *data) |
ccd979bd MF |
1758 | { |
1759 | struct ocfs2_inode_info *oi = data; | |
1760 | ||
a35afb83 CL |
1761 | oi->ip_flags = 0; |
1762 | oi->ip_open_count = 0; | |
1763 | spin_lock_init(&oi->ip_lock); | |
1764 | ocfs2_extent_map_init(&oi->vfs_inode); | |
1765 | INIT_LIST_HEAD(&oi->ip_io_markers); | |
a35afb83 | 1766 | oi->ip_dir_start_lookup = 0; |
a11f7e63 | 1767 | atomic_set(&oi->ip_unaligned_aio, 0); |
a35afb83 | 1768 | init_rwsem(&oi->ip_alloc_sem); |
cf1d6c76 | 1769 | init_rwsem(&oi->ip_xattr_sem); |
a35afb83 | 1770 | mutex_init(&oi->ip_io_mutex); |
ccd979bd | 1771 | |
a35afb83 CL |
1772 | oi->ip_blkno = 0ULL; |
1773 | oi->ip_clusters = 0; | |
ccd979bd | 1774 | |
4fe370af MF |
1775 | ocfs2_resv_init_once(&oi->ip_la_data_resv); |
1776 | ||
a35afb83 | 1777 | ocfs2_lock_res_init_once(&oi->ip_rw_lockres); |
e63aecb6 | 1778 | ocfs2_lock_res_init_once(&oi->ip_inode_lockres); |
a35afb83 | 1779 | ocfs2_lock_res_init_once(&oi->ip_open_lockres); |
ccd979bd | 1780 | |
8cb471e8 | 1781 | ocfs2_metadata_cache_init(INODE_CACHE(&oi->vfs_inode), |
6e5a3d75 | 1782 | &ocfs2_inode_caching_ops); |
ccd979bd | 1783 | |
a35afb83 | 1784 | inode_init_once(&oi->vfs_inode); |
ccd979bd MF |
1785 | } |
1786 | ||
1787 | static int ocfs2_initialize_mem_caches(void) | |
1788 | { | |
1789 | ocfs2_inode_cachep = kmem_cache_create("ocfs2_inode_cache", | |
fffb60f9 PJ |
1790 | sizeof(struct ocfs2_inode_info), |
1791 | 0, | |
1792 | (SLAB_HWCACHE_ALIGN|SLAB_RECLAIM_ACCOUNT| | |
1793 | SLAB_MEM_SPREAD), | |
20c2df83 | 1794 | ocfs2_inode_init_once); |
9e33d69f JK |
1795 | ocfs2_dquot_cachep = kmem_cache_create("ocfs2_dquot_cache", |
1796 | sizeof(struct ocfs2_dquot), | |
1797 | 0, | |
1798 | (SLAB_HWCACHE_ALIGN|SLAB_RECLAIM_ACCOUNT| | |
1799 | SLAB_MEM_SPREAD), | |
1800 | NULL); | |
1801 | ocfs2_qf_chunk_cachep = kmem_cache_create("ocfs2_qf_chunk_cache", | |
1802 | sizeof(struct ocfs2_quota_chunk), | |
1803 | 0, | |
1804 | (SLAB_RECLAIM_ACCOUNT|SLAB_MEM_SPREAD), | |
1805 | NULL); | |
1806 | if (!ocfs2_inode_cachep || !ocfs2_dquot_cachep || | |
1807 | !ocfs2_qf_chunk_cachep) { | |
1808 | if (ocfs2_inode_cachep) | |
1809 | kmem_cache_destroy(ocfs2_inode_cachep); | |
1810 | if (ocfs2_dquot_cachep) | |
1811 | kmem_cache_destroy(ocfs2_dquot_cachep); | |
1812 | if (ocfs2_qf_chunk_cachep) | |
1813 | kmem_cache_destroy(ocfs2_qf_chunk_cachep); | |
ccd979bd | 1814 | return -ENOMEM; |
9e33d69f | 1815 | } |
ccd979bd | 1816 | |
ccd979bd MF |
1817 | return 0; |
1818 | } | |
1819 | ||
1820 | static void ocfs2_free_mem_caches(void) | |
1821 | { | |
1822 | if (ocfs2_inode_cachep) | |
1823 | kmem_cache_destroy(ocfs2_inode_cachep); | |
ccd979bd | 1824 | ocfs2_inode_cachep = NULL; |
9e33d69f JK |
1825 | |
1826 | if (ocfs2_dquot_cachep) | |
1827 | kmem_cache_destroy(ocfs2_dquot_cachep); | |
1828 | ocfs2_dquot_cachep = NULL; | |
1829 | ||
1830 | if (ocfs2_qf_chunk_cachep) | |
1831 | kmem_cache_destroy(ocfs2_qf_chunk_cachep); | |
1832 | ocfs2_qf_chunk_cachep = NULL; | |
ccd979bd MF |
1833 | } |
1834 | ||
1835 | static int ocfs2_get_sector(struct super_block *sb, | |
1836 | struct buffer_head **bh, | |
1837 | int block, | |
1838 | int sect_size) | |
1839 | { | |
1840 | if (!sb_set_blocksize(sb, sect_size)) { | |
1841 | mlog(ML_ERROR, "unable to set blocksize\n"); | |
1842 | return -EIO; | |
1843 | } | |
1844 | ||
1845 | *bh = sb_getblk(sb, block); | |
1846 | if (!*bh) { | |
1847 | mlog_errno(-EIO); | |
1848 | return -EIO; | |
1849 | } | |
1850 | lock_buffer(*bh); | |
1851 | if (!buffer_dirty(*bh)) | |
1852 | clear_buffer_uptodate(*bh); | |
1853 | unlock_buffer(*bh); | |
1854 | ll_rw_block(READ, 1, bh); | |
1855 | wait_on_buffer(*bh); | |
28d57d43 | 1856 | if (!buffer_uptodate(*bh)) { |
1857 | mlog_errno(-EIO); | |
1858 | brelse(*bh); | |
1859 | *bh = NULL; | |
1860 | return -EIO; | |
1861 | } | |
1862 | ||
ccd979bd MF |
1863 | return 0; |
1864 | } | |
1865 | ||
ccd979bd MF |
1866 | static int ocfs2_mount_volume(struct super_block *sb) |
1867 | { | |
1868 | int status = 0; | |
1869 | int unlock_super = 0; | |
1870 | struct ocfs2_super *osb = OCFS2_SB(sb); | |
1871 | ||
ccd979bd MF |
1872 | if (ocfs2_is_hard_readonly(osb)) |
1873 | goto leave; | |
1874 | ||
ccd979bd MF |
1875 | status = ocfs2_dlm_init(osb); |
1876 | if (status < 0) { | |
1877 | mlog_errno(status); | |
1878 | goto leave; | |
1879 | } | |
1880 | ||
ccd979bd MF |
1881 | status = ocfs2_super_lock(osb, 1); |
1882 | if (status < 0) { | |
1883 | mlog_errno(status); | |
1884 | goto leave; | |
1885 | } | |
1886 | unlock_super = 1; | |
1887 | ||
1888 | /* This will load up the node map and add ourselves to it. */ | |
1889 | status = ocfs2_find_slot(osb); | |
1890 | if (status < 0) { | |
1891 | mlog_errno(status); | |
1892 | goto leave; | |
1893 | } | |
1894 | ||
ccd979bd MF |
1895 | /* load all node-local system inodes */ |
1896 | status = ocfs2_init_local_system_inodes(osb); | |
1897 | if (status < 0) { | |
1898 | mlog_errno(status); | |
1899 | goto leave; | |
1900 | } | |
1901 | ||
1902 | status = ocfs2_check_volume(osb); | |
1903 | if (status < 0) { | |
1904 | mlog_errno(status); | |
1905 | goto leave; | |
1906 | } | |
1907 | ||
1908 | status = ocfs2_truncate_log_init(osb); | |
06c59bb8 | 1909 | if (status < 0) |
ccd979bd | 1910 | mlog_errno(status); |
c271c5c2 | 1911 | |
ccd979bd MF |
1912 | leave: |
1913 | if (unlock_super) | |
1914 | ocfs2_super_unlock(osb, 1); | |
1915 | ||
ccd979bd MF |
1916 | return status; |
1917 | } | |
1918 | ||
ccd979bd MF |
1919 | static void ocfs2_dismount_volume(struct super_block *sb, int mnt_err) |
1920 | { | |
286eaa95 | 1921 | int tmp, hangup_needed = 0; |
ccd979bd | 1922 | struct ocfs2_super *osb = NULL; |
c271c5c2 | 1923 | char nodestr[8]; |
ccd979bd | 1924 | |
32a42d39 | 1925 | trace_ocfs2_dismount_volume(sb); |
ccd979bd MF |
1926 | |
1927 | BUG_ON(!sb); | |
1928 | osb = OCFS2_SB(sb); | |
1929 | BUG_ON(!osb); | |
1930 | ||
50397507 SM |
1931 | debugfs_remove(osb->osb_ctxt); |
1932 | ||
f7b1aa69 JK |
1933 | /* |
1934 | * Flush inode dropping work queue so that deletes are | |
1935 | * performed while the filesystem is still working | |
1936 | */ | |
1937 | ocfs2_drop_all_dl_inodes(osb); | |
1938 | ||
692684e1 SM |
1939 | /* Orphan scan should be stopped as early as possible */ |
1940 | ocfs2_orphan_scan_stop(osb); | |
1941 | ||
19ece546 JK |
1942 | ocfs2_disable_quotas(osb); |
1943 | ||
ccd979bd MF |
1944 | ocfs2_shutdown_local_alloc(osb); |
1945 | ||
1946 | ocfs2_truncate_log_shutdown(osb); | |
1947 | ||
553abd04 JB |
1948 | /* This will disable recovery and flush any recovery work. */ |
1949 | ocfs2_recovery_exit(osb); | |
ccd979bd MF |
1950 | |
1951 | ocfs2_journal_shutdown(osb); | |
1952 | ||
1953 | ocfs2_sync_blockdev(sb); | |
1954 | ||
374a263e TM |
1955 | ocfs2_purge_refcount_trees(osb); |
1956 | ||
4670c46d JB |
1957 | /* No cluster connection means we've failed during mount, so skip |
1958 | * all the steps which depended on that to complete. */ | |
1959 | if (osb->cconn) { | |
ccd979bd MF |
1960 | tmp = ocfs2_super_lock(osb, 1); |
1961 | if (tmp < 0) { | |
1962 | mlog_errno(tmp); | |
1963 | return; | |
1964 | } | |
19b613d4 | 1965 | } |
ccd979bd | 1966 | |
19b613d4 MF |
1967 | if (osb->slot_num != OCFS2_INVALID_SLOT) |
1968 | ocfs2_put_slot(osb); | |
ccd979bd | 1969 | |
4670c46d | 1970 | if (osb->cconn) |
ccd979bd | 1971 | ocfs2_super_unlock(osb, 1); |
ccd979bd MF |
1972 | |
1973 | ocfs2_release_system_inodes(osb); | |
1974 | ||
6953b4c0 | 1975 | /* |
6953b4c0 JB |
1976 | * If we're dismounting due to mount error, mount.ocfs2 will clean |
1977 | * up heartbeat. If we're a local mount, there is no heartbeat. | |
1978 | * If we failed before we got a uuid_str yet, we can't stop | |
1979 | * heartbeat. Otherwise, do it. | |
1980 | */ | |
03efed8a TY |
1981 | if (!mnt_err && !ocfs2_mount_local(osb) && osb->uuid_str && |
1982 | !ocfs2_is_hard_readonly(osb)) | |
286eaa95 JB |
1983 | hangup_needed = 1; |
1984 | ||
1985 | if (osb->cconn) | |
1986 | ocfs2_dlm_shutdown(osb, hangup_needed); | |
1987 | ||
73be192b | 1988 | ocfs2_blockcheck_stats_debugfs_remove(&osb->osb_ecc_stats); |
286eaa95 JB |
1989 | debugfs_remove(osb->osb_debug_root); |
1990 | ||
1991 | if (hangup_needed) | |
6953b4c0 | 1992 | ocfs2_cluster_hangup(osb->uuid_str, strlen(osb->uuid_str)); |
ccd979bd MF |
1993 | |
1994 | atomic_set(&osb->vol_state, VOLUME_DISMOUNTED); | |
1995 | ||
c271c5c2 SM |
1996 | if (ocfs2_mount_local(osb)) |
1997 | snprintf(nodestr, sizeof(nodestr), "local"); | |
1998 | else | |
19fdb624 | 1999 | snprintf(nodestr, sizeof(nodestr), "%u", osb->node_num); |
c271c5c2 SM |
2000 | |
2001 | printk(KERN_INFO "ocfs2: Unmounting device (%s) on (node %s)\n", | |
2002 | osb->dev_str, nodestr); | |
ccd979bd MF |
2003 | |
2004 | ocfs2_delete_osb(osb); | |
2005 | kfree(osb); | |
2006 | sb->s_dev = 0; | |
2007 | sb->s_fs_info = NULL; | |
2008 | } | |
2009 | ||
2010 | static int ocfs2_setup_osb_uuid(struct ocfs2_super *osb, const unsigned char *uuid, | |
2011 | unsigned uuid_bytes) | |
2012 | { | |
2013 | int i, ret; | |
2014 | char *ptr; | |
2015 | ||
2016 | BUG_ON(uuid_bytes != OCFS2_VOL_UUID_LEN); | |
2017 | ||
cd861280 | 2018 | osb->uuid_str = kzalloc(OCFS2_VOL_UUID_LEN * 2 + 1, GFP_KERNEL); |
ccd979bd MF |
2019 | if (osb->uuid_str == NULL) |
2020 | return -ENOMEM; | |
2021 | ||
ccd979bd MF |
2022 | for (i = 0, ptr = osb->uuid_str; i < OCFS2_VOL_UUID_LEN; i++) { |
2023 | /* print with null */ | |
2024 | ret = snprintf(ptr, 3, "%02X", uuid[i]); | |
2025 | if (ret != 2) /* drop super cleans up */ | |
2026 | return -EINVAL; | |
2027 | /* then only advance past the last char */ | |
2028 | ptr += 2; | |
2029 | } | |
2030 | ||
2031 | return 0; | |
2032 | } | |
2033 | ||
3bdb8efd PL |
2034 | /* Make sure entire volume is addressable by our journal. Requires |
2035 | osb_clusters_at_boot to be valid and for the journal to have been | |
2036 | initialized by ocfs2_journal_init(). */ | |
2037 | static int ocfs2_journal_addressable(struct ocfs2_super *osb) | |
2038 | { | |
2039 | int status = 0; | |
2040 | u64 max_block = | |
2041 | ocfs2_clusters_to_blocks(osb->sb, | |
2042 | osb->osb_clusters_at_boot) - 1; | |
2043 | ||
2044 | /* 32-bit block number is always OK. */ | |
2045 | if (max_block <= (u32)~0ULL) | |
2046 | goto out; | |
2047 | ||
2048 | /* Volume is "huge", so see if our journal is new enough to | |
2049 | support it. */ | |
2050 | if (!(OCFS2_HAS_COMPAT_FEATURE(osb->sb, | |
2051 | OCFS2_FEATURE_COMPAT_JBD2_SB) && | |
2052 | jbd2_journal_check_used_features(osb->journal->j_journal, 0, 0, | |
2053 | JBD2_FEATURE_INCOMPAT_64BIT))) { | |
2054 | mlog(ML_ERROR, "The journal cannot address the entire volume. " | |
2055 | "Enable the 'block64' journal option with tunefs.ocfs2"); | |
2056 | status = -EFBIG; | |
2057 | goto out; | |
2058 | } | |
2059 | ||
2060 | out: | |
2061 | return status; | |
2062 | } | |
2063 | ||
ccd979bd MF |
2064 | static int ocfs2_initialize_super(struct super_block *sb, |
2065 | struct buffer_head *bh, | |
73be192b JB |
2066 | int sector_size, |
2067 | struct ocfs2_blockcheck_stats *stats) | |
ccd979bd | 2068 | { |
bddb8eb3 | 2069 | int status; |
5a254031 MF |
2070 | int i, cbits, bbits; |
2071 | struct ocfs2_dinode *di = (struct ocfs2_dinode *)bh->b_data; | |
ccd979bd | 2072 | struct inode *inode = NULL; |
ccd979bd MF |
2073 | struct ocfs2_journal *journal; |
2074 | __le32 uuid_net_key; | |
2075 | struct ocfs2_super *osb; | |
3bdb8efd | 2076 | u64 total_blocks; |
ccd979bd | 2077 | |
cd861280 | 2078 | osb = kzalloc(sizeof(struct ocfs2_super), GFP_KERNEL); |
ccd979bd MF |
2079 | if (!osb) { |
2080 | status = -ENOMEM; | |
2081 | mlog_errno(status); | |
2082 | goto bail; | |
2083 | } | |
2084 | ||
2085 | sb->s_fs_info = osb; | |
2086 | sb->s_op = &ocfs2_sops; | |
ba87167c | 2087 | sb->s_d_op = &ocfs2_dentry_ops; |
ccd979bd | 2088 | sb->s_export_op = &ocfs2_export_ops; |
19ece546 JK |
2089 | sb->s_qcop = &ocfs2_quotactl_ops; |
2090 | sb->dq_op = &ocfs2_quota_operations; | |
cf1d6c76 | 2091 | sb->s_xattr = ocfs2_xattr_handlers; |
e0dceaf0 | 2092 | sb->s_time_gran = 1; |
ccd979bd MF |
2093 | sb->s_flags |= MS_NOATIME; |
2094 | /* this is needed to support O_LARGEFILE */ | |
5a254031 MF |
2095 | cbits = le32_to_cpu(di->id2.i_super.s_clustersize_bits); |
2096 | bbits = le32_to_cpu(di->id2.i_super.s_blocksize_bits); | |
2097 | sb->s_maxbytes = ocfs2_max_file_offset(bbits, cbits); | |
ccd979bd | 2098 | |
9b7895ef MF |
2099 | osb->osb_dx_mask = (1 << (cbits - bbits)) - 1; |
2100 | ||
2101 | for (i = 0; i < 3; i++) | |
2102 | osb->osb_dx_seed[i] = le32_to_cpu(di->id2.i_super.s_dx_seed[i]); | |
2103 | osb->osb_dx_seed[3] = le32_to_cpu(di->id2.i_super.s_uuid_hash); | |
2104 | ||
ccd979bd MF |
2105 | osb->sb = sb; |
2106 | /* Save off for ocfs2_rw_direct */ | |
2107 | osb->s_sectsize_bits = blksize_bits(sector_size); | |
ebdec83b | 2108 | BUG_ON(!osb->s_sectsize_bits); |
ccd979bd | 2109 | |
34d024f8 MF |
2110 | spin_lock_init(&osb->dc_task_lock); |
2111 | init_waitqueue_head(&osb->dc_event); | |
2112 | osb->dc_work_sequence = 0; | |
2113 | osb->dc_wake_sequence = 0; | |
ccd979bd MF |
2114 | INIT_LIST_HEAD(&osb->blocked_lock_list); |
2115 | osb->blocked_lock_count = 0; | |
ccd979bd | 2116 | spin_lock_init(&osb->osb_lock); |
c8b9cf9a | 2117 | spin_lock_init(&osb->osb_xattr_lock); |
b89c5428 | 2118 | ocfs2_init_steal_slots(osb); |
ccd979bd MF |
2119 | |
2120 | atomic_set(&osb->alloc_stats.moves, 0); | |
2121 | atomic_set(&osb->alloc_stats.local_data, 0); | |
2122 | atomic_set(&osb->alloc_stats.bitmap_data, 0); | |
2123 | atomic_set(&osb->alloc_stats.bg_allocs, 0); | |
2124 | atomic_set(&osb->alloc_stats.bg_extends, 0); | |
2125 | ||
73be192b JB |
2126 | /* Copy the blockcheck stats from the superblock probe */ |
2127 | osb->osb_ecc_stats = *stats; | |
2128 | ||
ccd979bd MF |
2129 | ocfs2_init_node_maps(osb); |
2130 | ||
2131 | snprintf(osb->dev_str, sizeof(osb->dev_str), "%u,%u", | |
2132 | MAJOR(osb->sb->s_dev), MINOR(osb->sb->s_dev)); | |
2133 | ||
75d9bbc7 GR |
2134 | osb->max_slots = le16_to_cpu(di->id2.i_super.s_max_slots); |
2135 | if (osb->max_slots > OCFS2_MAX_SLOTS || osb->max_slots == 0) { | |
2136 | mlog(ML_ERROR, "Invalid number of node slots (%u)\n", | |
2137 | osb->max_slots); | |
2138 | status = -EINVAL; | |
2139 | goto bail; | |
2140 | } | |
75d9bbc7 | 2141 | |
8b712cd5 JM |
2142 | ocfs2_orphan_scan_init(osb); |
2143 | ||
553abd04 JB |
2144 | status = ocfs2_recovery_init(osb); |
2145 | if (status) { | |
2146 | mlog(ML_ERROR, "Unable to initialize recovery state\n"); | |
2147 | mlog_errno(status); | |
2148 | goto bail; | |
2149 | } | |
ccd979bd MF |
2150 | |
2151 | init_waitqueue_head(&osb->checkpoint_event); | |
2152 | atomic_set(&osb->needs_checkpoint, 0); | |
2153 | ||
7f1a37e3 TY |
2154 | osb->s_atime_quantum = OCFS2_DEFAULT_ATIME_QUANTUM; |
2155 | ||
ccd979bd MF |
2156 | osb->slot_num = OCFS2_INVALID_SLOT; |
2157 | ||
8154da3d TY |
2158 | osb->s_xattr_inline_size = le16_to_cpu( |
2159 | di->id2.i_super.s_xattr_inline_size); | |
fdd77704 | 2160 | |
ccd979bd MF |
2161 | osb->local_alloc_state = OCFS2_LA_UNUSED; |
2162 | osb->local_alloc_bh = NULL; | |
9c7af40b | 2163 | INIT_DELAYED_WORK(&osb->la_enable_wq, ocfs2_la_enable_worker); |
ccd979bd | 2164 | |
ccd979bd MF |
2165 | init_waitqueue_head(&osb->osb_mount_event); |
2166 | ||
d02f00cc MF |
2167 | status = ocfs2_resmap_init(osb, &osb->osb_la_resmap); |
2168 | if (status) { | |
2169 | mlog_errno(status); | |
2170 | goto bail; | |
2171 | } | |
2172 | ||
ccd979bd MF |
2173 | osb->vol_label = kmalloc(OCFS2_MAX_VOL_LABEL_LEN, GFP_KERNEL); |
2174 | if (!osb->vol_label) { | |
2175 | mlog(ML_ERROR, "unable to alloc vol label\n"); | |
2176 | status = -ENOMEM; | |
2177 | goto bail; | |
2178 | } | |
2179 | ||
539d8264 SM |
2180 | osb->slot_recovery_generations = |
2181 | kcalloc(osb->max_slots, sizeof(*osb->slot_recovery_generations), | |
2182 | GFP_KERNEL); | |
2183 | if (!osb->slot_recovery_generations) { | |
2184 | status = -ENOMEM; | |
2185 | mlog_errno(status); | |
2186 | goto bail; | |
2187 | } | |
2188 | ||
b4df6ed8 MF |
2189 | init_waitqueue_head(&osb->osb_wipe_event); |
2190 | osb->osb_orphan_wipes = kcalloc(osb->max_slots, | |
2191 | sizeof(*osb->osb_orphan_wipes), | |
2192 | GFP_KERNEL); | |
2193 | if (!osb->osb_orphan_wipes) { | |
2194 | status = -ENOMEM; | |
2195 | mlog_errno(status); | |
2196 | goto bail; | |
2197 | } | |
2198 | ||
374a263e TM |
2199 | osb->osb_rf_lock_tree = RB_ROOT; |
2200 | ||
ccd979bd MF |
2201 | osb->s_feature_compat = |
2202 | le32_to_cpu(OCFS2_RAW_SB(di)->s_feature_compat); | |
2203 | osb->s_feature_ro_compat = | |
2204 | le32_to_cpu(OCFS2_RAW_SB(di)->s_feature_ro_compat); | |
2205 | osb->s_feature_incompat = | |
2206 | le32_to_cpu(OCFS2_RAW_SB(di)->s_feature_incompat); | |
2207 | ||
2208 | if ((i = OCFS2_HAS_INCOMPAT_FEATURE(osb->sb, ~OCFS2_FEATURE_INCOMPAT_SUPP))) { | |
2209 | mlog(ML_ERROR, "couldn't mount because of unsupported " | |
2210 | "optional features (%x).\n", i); | |
2211 | status = -EINVAL; | |
2212 | goto bail; | |
2213 | } | |
2214 | if (!(osb->sb->s_flags & MS_RDONLY) && | |
2215 | (i = OCFS2_HAS_RO_COMPAT_FEATURE(osb->sb, ~OCFS2_FEATURE_RO_COMPAT_SUPP))) { | |
2216 | mlog(ML_ERROR, "couldn't mount RDWR because of " | |
2217 | "unsupported optional features (%x).\n", i); | |
2218 | status = -EINVAL; | |
2219 | goto bail; | |
2220 | } | |
2221 | ||
98f486f2 SM |
2222 | if (ocfs2_clusterinfo_valid(osb)) { |
2223 | osb->osb_stackflags = | |
2224 | OCFS2_RAW_SB(di)->s_cluster_info.ci_stackflags; | |
b61817e1 JB |
2225 | memcpy(osb->osb_cluster_stack, |
2226 | OCFS2_RAW_SB(di)->s_cluster_info.ci_stack, | |
2227 | OCFS2_STACK_LABEL_LEN); | |
2228 | osb->osb_cluster_stack[OCFS2_STACK_LABEL_LEN] = '\0'; | |
2229 | if (strlen(osb->osb_cluster_stack) != OCFS2_STACK_LABEL_LEN) { | |
2230 | mlog(ML_ERROR, | |
2231 | "couldn't mount because of an invalid " | |
2232 | "cluster stack label (%s) \n", | |
2233 | osb->osb_cluster_stack); | |
2234 | status = -EINVAL; | |
2235 | goto bail; | |
2236 | } | |
2237 | } else { | |
2238 | /* The empty string is identical with classic tools that | |
2239 | * don't know about s_cluster_info. */ | |
2240 | osb->osb_cluster_stack[0] = '\0'; | |
2241 | } | |
2242 | ||
ccd979bd MF |
2243 | get_random_bytes(&osb->s_next_generation, sizeof(u32)); |
2244 | ||
2245 | /* FIXME | |
2246 | * This should be done in ocfs2_journal_init(), but unknown | |
2247 | * ordering issues will cause the filesystem to crash. | |
2248 | * If anyone wants to figure out what part of the code | |
2249 | * refers to osb->journal before ocfs2_journal_init() is run, | |
2250 | * be my guest. | |
2251 | */ | |
2252 | /* initialize our journal structure */ | |
2253 | ||
cd861280 | 2254 | journal = kzalloc(sizeof(struct ocfs2_journal), GFP_KERNEL); |
ccd979bd MF |
2255 | if (!journal) { |
2256 | mlog(ML_ERROR, "unable to alloc journal\n"); | |
2257 | status = -ENOMEM; | |
2258 | goto bail; | |
2259 | } | |
2260 | osb->journal = journal; | |
2261 | journal->j_osb = osb; | |
2262 | ||
2263 | atomic_set(&journal->j_num_trans, 0); | |
2264 | init_rwsem(&journal->j_trans_barrier); | |
2265 | init_waitqueue_head(&journal->j_checkpointed); | |
2266 | spin_lock_init(&journal->j_lock); | |
2267 | journal->j_trans_id = (unsigned long) 1; | |
2268 | INIT_LIST_HEAD(&journal->j_la_cleanups); | |
c4028958 | 2269 | INIT_WORK(&journal->j_recovery_work, ocfs2_complete_recovery); |
ccd979bd MF |
2270 | journal->j_state = OCFS2_JOURNAL_FREE; |
2271 | ||
ea455f8a JK |
2272 | INIT_WORK(&osb->dentry_lock_work, ocfs2_drop_dl_inodes); |
2273 | osb->dentry_lock_list = NULL; | |
2274 | ||
ccd979bd MF |
2275 | /* get some pseudo constants for clustersize bits */ |
2276 | osb->s_clustersize_bits = | |
2277 | le32_to_cpu(di->id2.i_super.s_clustersize_bits); | |
2278 | osb->s_clustersize = 1 << osb->s_clustersize_bits; | |
ccd979bd MF |
2279 | |
2280 | if (osb->s_clustersize < OCFS2_MIN_CLUSTERSIZE || | |
2281 | osb->s_clustersize > OCFS2_MAX_CLUSTERSIZE) { | |
2282 | mlog(ML_ERROR, "Volume has invalid cluster size (%d)\n", | |
2283 | osb->s_clustersize); | |
2284 | status = -EINVAL; | |
2285 | goto bail; | |
2286 | } | |
2287 | ||
3bdb8efd PL |
2288 | total_blocks = ocfs2_clusters_to_blocks(osb->sb, |
2289 | le32_to_cpu(di->i_clusters)); | |
2290 | ||
2291 | status = generic_check_addressable(osb->sb->s_blocksize_bits, | |
2292 | total_blocks); | |
2293 | if (status) { | |
2294 | mlog(ML_ERROR, "Volume too large " | |
2295 | "to mount safely on this system"); | |
2296 | status = -EFBIG; | |
ccd979bd MF |
2297 | goto bail; |
2298 | } | |
2299 | ||
2300 | if (ocfs2_setup_osb_uuid(osb, di->id2.i_super.s_uuid, | |
2301 | sizeof(di->id2.i_super.s_uuid))) { | |
2302 | mlog(ML_ERROR, "Out of memory trying to setup our uuid.\n"); | |
2303 | status = -ENOMEM; | |
2304 | goto bail; | |
2305 | } | |
2306 | ||
78427043 | 2307 | memcpy(&uuid_net_key, di->id2.i_super.s_uuid, sizeof(uuid_net_key)); |
ccd979bd MF |
2308 | |
2309 | strncpy(osb->vol_label, di->id2.i_super.s_label, 63); | |
2310 | osb->vol_label[63] = '\0'; | |
2311 | osb->root_blkno = le64_to_cpu(di->id2.i_super.s_root_blkno); | |
2312 | osb->system_dir_blkno = le64_to_cpu(di->id2.i_super.s_system_dir_blkno); | |
2313 | osb->first_cluster_group_blkno = | |
2314 | le64_to_cpu(di->id2.i_super.s_first_cluster_group); | |
2315 | osb->fs_generation = le32_to_cpu(di->i_fs_generation); | |
cf1d6c76 | 2316 | osb->uuid_hash = le32_to_cpu(di->id2.i_super.s_uuid_hash); |
32a42d39 TM |
2317 | trace_ocfs2_initialize_super(osb->vol_label, osb->uuid_str, |
2318 | (unsigned long long)osb->root_blkno, | |
2319 | (unsigned long long)osb->system_dir_blkno, | |
2320 | osb->s_clustersize_bits); | |
ccd979bd MF |
2321 | |
2322 | osb->osb_dlm_debug = ocfs2_new_dlm_debug(); | |
2323 | if (!osb->osb_dlm_debug) { | |
2324 | status = -ENOMEM; | |
2325 | mlog_errno(status); | |
2326 | goto bail; | |
2327 | } | |
2328 | ||
2329 | atomic_set(&osb->vol_state, VOLUME_INIT); | |
2330 | ||
2331 | /* load root, system_dir, and all global system inodes */ | |
2332 | status = ocfs2_init_global_system_inodes(osb); | |
2333 | if (status < 0) { | |
2334 | mlog_errno(status); | |
2335 | goto bail; | |
2336 | } | |
2337 | ||
2338 | /* | |
2339 | * global bitmap | |
2340 | */ | |
2341 | inode = ocfs2_get_system_file_inode(osb, GLOBAL_BITMAP_SYSTEM_INODE, | |
2342 | OCFS2_INVALID_SLOT); | |
2343 | if (!inode) { | |
2344 | status = -EINVAL; | |
2345 | mlog_errno(status); | |
2346 | goto bail; | |
2347 | } | |
2348 | ||
2349 | osb->bitmap_blkno = OCFS2_I(inode)->ip_blkno; | |
6b82021b | 2350 | osb->osb_clusters_at_boot = OCFS2_I(inode)->ip_clusters; |
ccd979bd | 2351 | iput(inode); |
ccd979bd | 2352 | |
8571882c TM |
2353 | osb->bitmap_cpg = ocfs2_group_bitmap_size(sb, 0, |
2354 | osb->s_feature_incompat) * 8; | |
ccd979bd MF |
2355 | |
2356 | status = ocfs2_init_slot_info(osb); | |
2357 | if (status < 0) { | |
2358 | mlog_errno(status); | |
2359 | goto bail; | |
2360 | } | |
e41d33af | 2361 | cleancache_init_shared_fs((char *)&di->id2.i_super.s_uuid, sb); |
ccd979bd | 2362 | |
ccd979bd | 2363 | bail: |
ccd979bd MF |
2364 | return status; |
2365 | } | |
2366 | ||
2367 | /* | |
2368 | * will return: -EAGAIN if it is ok to keep searching for superblocks | |
2369 | * -EINVAL if there is a bad superblock | |
2370 | * 0 on success | |
2371 | */ | |
2372 | static int ocfs2_verify_volume(struct ocfs2_dinode *di, | |
2373 | struct buffer_head *bh, | |
73be192b JB |
2374 | u32 blksz, |
2375 | struct ocfs2_blockcheck_stats *stats) | |
ccd979bd MF |
2376 | { |
2377 | int status = -EAGAIN; | |
2378 | ||
ccd979bd MF |
2379 | if (memcmp(di->i_signature, OCFS2_SUPER_BLOCK_SIGNATURE, |
2380 | strlen(OCFS2_SUPER_BLOCK_SIGNATURE)) == 0) { | |
d030cc97 JB |
2381 | /* We have to do a raw check of the feature here */ |
2382 | if (le32_to_cpu(di->id2.i_super.s_feature_incompat) & | |
2383 | OCFS2_FEATURE_INCOMPAT_META_ECC) { | |
2384 | status = ocfs2_block_check_validate(bh->b_data, | |
2385 | bh->b_size, | |
73be192b JB |
2386 | &di->i_check, |
2387 | stats); | |
d030cc97 JB |
2388 | if (status) |
2389 | goto out; | |
2390 | } | |
ccd979bd MF |
2391 | status = -EINVAL; |
2392 | if ((1 << le32_to_cpu(di->id2.i_super.s_blocksize_bits)) != blksz) { | |
2393 | mlog(ML_ERROR, "found superblock with incorrect block " | |
2394 | "size: found %u, should be %u\n", | |
2395 | 1 << le32_to_cpu(di->id2.i_super.s_blocksize_bits), | |
2396 | blksz); | |
2397 | } else if (le16_to_cpu(di->id2.i_super.s_major_rev_level) != | |
2398 | OCFS2_MAJOR_REV_LEVEL || | |
2399 | le16_to_cpu(di->id2.i_super.s_minor_rev_level) != | |
2400 | OCFS2_MINOR_REV_LEVEL) { | |
2401 | mlog(ML_ERROR, "found superblock with bad version: " | |
2402 | "found %u.%u, should be %u.%u\n", | |
2403 | le16_to_cpu(di->id2.i_super.s_major_rev_level), | |
2404 | le16_to_cpu(di->id2.i_super.s_minor_rev_level), | |
2405 | OCFS2_MAJOR_REV_LEVEL, | |
2406 | OCFS2_MINOR_REV_LEVEL); | |
2407 | } else if (bh->b_blocknr != le64_to_cpu(di->i_blkno)) { | |
2408 | mlog(ML_ERROR, "bad block number on superblock: " | |
b0697053 | 2409 | "found %llu, should be %llu\n", |
1ca1a111 | 2410 | (unsigned long long)le64_to_cpu(di->i_blkno), |
b0697053 | 2411 | (unsigned long long)bh->b_blocknr); |
ccd979bd MF |
2412 | } else if (le32_to_cpu(di->id2.i_super.s_clustersize_bits) < 12 || |
2413 | le32_to_cpu(di->id2.i_super.s_clustersize_bits) > 20) { | |
2414 | mlog(ML_ERROR, "bad cluster size found: %u\n", | |
2415 | 1 << le32_to_cpu(di->id2.i_super.s_clustersize_bits)); | |
2416 | } else if (!le64_to_cpu(di->id2.i_super.s_root_blkno)) { | |
2417 | mlog(ML_ERROR, "bad root_blkno: 0\n"); | |
2418 | } else if (!le64_to_cpu(di->id2.i_super.s_system_dir_blkno)) { | |
2419 | mlog(ML_ERROR, "bad system_dir_blkno: 0\n"); | |
2420 | } else if (le16_to_cpu(di->id2.i_super.s_max_slots) > OCFS2_MAX_SLOTS) { | |
2421 | mlog(ML_ERROR, | |
2422 | "Superblock slots found greater than file system " | |
2423 | "maximum: found %u, max %u\n", | |
2424 | le16_to_cpu(di->id2.i_super.s_max_slots), | |
2425 | OCFS2_MAX_SLOTS); | |
2426 | } else { | |
2427 | /* found it! */ | |
2428 | status = 0; | |
2429 | } | |
2430 | } | |
2431 | ||
d030cc97 | 2432 | out: |
c1e8d35e TM |
2433 | if (status && status != -EAGAIN) |
2434 | mlog_errno(status); | |
ccd979bd MF |
2435 | return status; |
2436 | } | |
2437 | ||
2438 | static int ocfs2_check_volume(struct ocfs2_super *osb) | |
2439 | { | |
bddb8eb3 | 2440 | int status; |
ccd979bd | 2441 | int dirty; |
c271c5c2 | 2442 | int local; |
ccd979bd MF |
2443 | struct ocfs2_dinode *local_alloc = NULL; /* only used if we |
2444 | * recover | |
2445 | * ourselves. */ | |
2446 | ||
ccd979bd MF |
2447 | /* Init our journal object. */ |
2448 | status = ocfs2_journal_init(osb->journal, &dirty); | |
2449 | if (status < 0) { | |
2450 | mlog(ML_ERROR, "Could not initialize journal!\n"); | |
2451 | goto finally; | |
2452 | } | |
2453 | ||
3bdb8efd PL |
2454 | /* Now that journal has been initialized, check to make sure |
2455 | entire volume is addressable. */ | |
2456 | status = ocfs2_journal_addressable(osb); | |
2457 | if (status) | |
2458 | goto finally; | |
2459 | ||
ccd979bd MF |
2460 | /* If the journal was unmounted cleanly then we don't want to |
2461 | * recover anything. Otherwise, journal_load will do that | |
2462 | * dirty work for us :) */ | |
2463 | if (!dirty) { | |
2464 | status = ocfs2_journal_wipe(osb->journal, 0); | |
2465 | if (status < 0) { | |
2466 | mlog_errno(status); | |
2467 | goto finally; | |
2468 | } | |
2469 | } else { | |
619c200d SM |
2470 | printk(KERN_NOTICE "ocfs2: File system on device (%s) was not " |
2471 | "unmounted cleanly, recovering it.\n", osb->dev_str); | |
ccd979bd MF |
2472 | } |
2473 | ||
c271c5c2 SM |
2474 | local = ocfs2_mount_local(osb); |
2475 | ||
ccd979bd | 2476 | /* will play back anything left in the journal. */ |
539d8264 | 2477 | status = ocfs2_journal_load(osb->journal, local, dirty); |
01af4820 WW |
2478 | if (status < 0) { |
2479 | mlog(ML_ERROR, "ocfs2 journal load failed! %d\n", status); | |
2480 | goto finally; | |
2481 | } | |
ccd979bd MF |
2482 | |
2483 | if (dirty) { | |
2484 | /* recover my local alloc if we didn't unmount cleanly. */ | |
2485 | status = ocfs2_begin_local_alloc_recovery(osb, | |
2486 | osb->slot_num, | |
2487 | &local_alloc); | |
2488 | if (status < 0) { | |
2489 | mlog_errno(status); | |
2490 | goto finally; | |
2491 | } | |
2492 | /* we complete the recovery process after we've marked | |
2493 | * ourselves as mounted. */ | |
2494 | } | |
2495 | ||
ccd979bd MF |
2496 | status = ocfs2_load_local_alloc(osb); |
2497 | if (status < 0) { | |
2498 | mlog_errno(status); | |
2499 | goto finally; | |
2500 | } | |
2501 | ||
2502 | if (dirty) { | |
2503 | /* Recovery will be completed after we've mounted the | |
2504 | * rest of the volume. */ | |
2505 | osb->dirty = 1; | |
2506 | osb->local_alloc_copy = local_alloc; | |
2507 | local_alloc = NULL; | |
2508 | } | |
2509 | ||
2510 | /* go through each journal, trylock it and if you get the | |
2511 | * lock, and it's marked as dirty, set the bit in the recover | |
2512 | * map and launch a recovery thread for it. */ | |
2513 | status = ocfs2_mark_dead_nodes(osb); | |
9140db04 SE |
2514 | if (status < 0) { |
2515 | mlog_errno(status); | |
2516 | goto finally; | |
2517 | } | |
2518 | ||
2519 | status = ocfs2_compute_replay_slots(osb); | |
ccd979bd MF |
2520 | if (status < 0) |
2521 | mlog_errno(status); | |
2522 | ||
2523 | finally: | |
2524 | if (local_alloc) | |
2525 | kfree(local_alloc); | |
2526 | ||
c1e8d35e TM |
2527 | if (status) |
2528 | mlog_errno(status); | |
ccd979bd MF |
2529 | return status; |
2530 | } | |
2531 | ||
2532 | /* | |
2533 | * The routine gets called from dismount or close whenever a dismount on | |
2534 | * volume is requested and the osb open count becomes 1. | |
2535 | * It will remove the osb from the global list and also free up all the | |
2536 | * initialized resources and fileobject. | |
2537 | */ | |
2538 | static void ocfs2_delete_osb(struct ocfs2_super *osb) | |
2539 | { | |
ccd979bd MF |
2540 | /* This function assumes that the caller has the main osb resource */ |
2541 | ||
8e8a4603 | 2542 | ocfs2_free_slot_info(osb); |
ccd979bd | 2543 | |
b4df6ed8 | 2544 | kfree(osb->osb_orphan_wipes); |
539d8264 | 2545 | kfree(osb->slot_recovery_generations); |
ccd979bd MF |
2546 | /* FIXME |
2547 | * This belongs in journal shutdown, but because we have to | |
421f91d2 | 2548 | * allocate osb->journal at the start of ocfs2_initialize_osb(), |
ccd979bd MF |
2549 | * we free it here. |
2550 | */ | |
2551 | kfree(osb->journal); | |
2552 | if (osb->local_alloc_copy) | |
2553 | kfree(osb->local_alloc_copy); | |
2554 | kfree(osb->uuid_str); | |
2555 | ocfs2_put_dlm_debug(osb->osb_dlm_debug); | |
2556 | memset(osb, 0, sizeof(struct ocfs2_super)); | |
ccd979bd MF |
2557 | } |
2558 | ||
2559 | /* Put OCFS2 into a readonly state, or (if the user specifies it), | |
2560 | * panic(). We do not support continue-on-error operation. */ | |
2561 | static void ocfs2_handle_error(struct super_block *sb) | |
2562 | { | |
2563 | struct ocfs2_super *osb = OCFS2_SB(sb); | |
2564 | ||
2565 | if (osb->s_mount_opt & OCFS2_MOUNT_ERRORS_PANIC) | |
2566 | panic("OCFS2: (device %s): panic forced after error\n", | |
2567 | sb->s_id); | |
2568 | ||
2569 | ocfs2_set_osb_flag(osb, OCFS2_OSB_ERROR_FS); | |
2570 | ||
2571 | if (sb->s_flags & MS_RDONLY && | |
2572 | (ocfs2_is_soft_readonly(osb) || | |
2573 | ocfs2_is_hard_readonly(osb))) | |
2574 | return; | |
2575 | ||
2576 | printk(KERN_CRIT "File system is now read-only due to the potential " | |
2577 | "of on-disk corruption. Please run fsck.ocfs2 once the file " | |
2578 | "system is unmounted.\n"); | |
2579 | sb->s_flags |= MS_RDONLY; | |
2580 | ocfs2_set_ro_flag(osb, 0); | |
2581 | } | |
2582 | ||
2583 | static char error_buf[1024]; | |
2584 | ||
2585 | void __ocfs2_error(struct super_block *sb, | |
2586 | const char *function, | |
2587 | const char *fmt, ...) | |
2588 | { | |
2589 | va_list args; | |
2590 | ||
2591 | va_start(args, fmt); | |
4a6e617a | 2592 | vsnprintf(error_buf, sizeof(error_buf), fmt, args); |
ccd979bd MF |
2593 | va_end(args); |
2594 | ||
2595 | /* Not using mlog here because we want to show the actual | |
2596 | * function the error came from. */ | |
2597 | printk(KERN_CRIT "OCFS2: ERROR (device %s): %s: %s\n", | |
2598 | sb->s_id, function, error_buf); | |
2599 | ||
2600 | ocfs2_handle_error(sb); | |
2601 | } | |
2602 | ||
2603 | /* Handle critical errors. This is intentionally more drastic than | |
2604 | * ocfs2_handle_error, so we only use for things like journal errors, | |
2605 | * etc. */ | |
2606 | void __ocfs2_abort(struct super_block* sb, | |
2607 | const char *function, | |
2608 | const char *fmt, ...) | |
2609 | { | |
2610 | va_list args; | |
2611 | ||
2612 | va_start(args, fmt); | |
4a6e617a | 2613 | vsnprintf(error_buf, sizeof(error_buf), fmt, args); |
ccd979bd MF |
2614 | va_end(args); |
2615 | ||
2616 | printk(KERN_CRIT "OCFS2: abort (device %s): %s: %s\n", | |
2617 | sb->s_id, function, error_buf); | |
2618 | ||
2619 | /* We don't have the cluster support yet to go straight to | |
2620 | * hard readonly in here. Until then, we want to keep | |
2621 | * ocfs2_abort() so that we can at least mark critical | |
2622 | * errors. | |
2623 | * | |
2624 | * TODO: This should abort the journal and alert other nodes | |
2625 | * that our slot needs recovery. */ | |
2626 | ||
2627 | /* Force a panic(). This stinks, but it's better than letting | |
2628 | * things continue without having a proper hard readonly | |
2629 | * here. */ | |
a2f2ddbf SM |
2630 | if (!ocfs2_mount_local(OCFS2_SB(sb))) |
2631 | OCFS2_SB(sb)->s_mount_opt |= OCFS2_MOUNT_ERRORS_PANIC; | |
ccd979bd MF |
2632 | ocfs2_handle_error(sb); |
2633 | } | |
2634 | ||
e4b963f1 JB |
2635 | /* |
2636 | * Void signal blockers, because in-kernel sigprocmask() only fails | |
2637 | * when SIG_* is wrong. | |
2638 | */ | |
2639 | void ocfs2_block_signals(sigset_t *oldset) | |
2640 | { | |
2641 | int rc; | |
2642 | sigset_t blocked; | |
2643 | ||
2644 | sigfillset(&blocked); | |
2645 | rc = sigprocmask(SIG_BLOCK, &blocked, oldset); | |
2646 | BUG_ON(rc); | |
2647 | } | |
2648 | ||
2649 | void ocfs2_unblock_signals(sigset_t *oldset) | |
2650 | { | |
2651 | int rc = sigprocmask(SIG_SETMASK, oldset, NULL); | |
2652 | BUG_ON(rc); | |
2653 | } | |
2654 | ||
ccd979bd MF |
2655 | module_init(ocfs2_init); |
2656 | module_exit(ocfs2_exit); |