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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" | |
cf1d6c76 | 71 | #include "xattr.h" |
9e33d69f | 72 | #include "quota.h" |
374a263e | 73 | #include "refcounttree.h" |
b89c5428 | 74 | #include "suballoc.h" |
ccd979bd MF |
75 | |
76 | #include "buffer_head_io.h" | |
77 | ||
1a5c4e2a | 78 | static struct kmem_cache *ocfs2_inode_cachep; |
9e33d69f JK |
79 | struct kmem_cache *ocfs2_dquot_cachep; |
80 | struct kmem_cache *ocfs2_qf_chunk_cachep; | |
ccd979bd | 81 | |
25985edc | 82 | /* OCFS2 needs to schedule several different types of work which |
ccd979bd MF |
83 | * require cluster locking, disk I/O, recovery waits, etc. Since these |
84 | * types of work tend to be heavy we avoid using the kernel events | |
85 | * workqueue and schedule on our own. */ | |
86 | struct workqueue_struct *ocfs2_wq = NULL; | |
87 | ||
1a5c4e2a | 88 | static struct dentry *ocfs2_debugfs_root; |
ccd979bd MF |
89 | |
90 | MODULE_AUTHOR("Oracle"); | |
91 | MODULE_LICENSE("GPL"); | |
ff8fb335 | 92 | MODULE_DESCRIPTION("OCFS2 cluster file system"); |
ccd979bd | 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, | |
8fa9d17f | 289 | "%10s => Pid: %d Interval: %lu\n", "Commit", |
c3d38840 | 290 | (osb->commit_task ? task_pid_nr(osb->commit_task) : -1), |
8fa9d17f | 291 | osb->osb_commit_interval); |
50397507 SM |
292 | |
293 | out += snprintf(buf + out, len - out, | |
c3d38840 | 294 | "%10s => State: %d TxnId: %lu NumTxns: %d\n", |
50397507 | 295 | "Journal", osb->journal->j_state, |
c3d38840 SM |
296 | osb->journal->j_trans_id, |
297 | atomic_read(&osb->journal->j_num_trans)); | |
50397507 SM |
298 | |
299 | out += snprintf(buf + out, len - out, | |
300 | "%10s => GlobalAllocs: %d LocalAllocs: %d " | |
301 | "SubAllocs: %d LAWinMoves: %d SAExtends: %d\n", | |
302 | "Stats", | |
303 | atomic_read(&osb->alloc_stats.bitmap_data), | |
304 | atomic_read(&osb->alloc_stats.local_data), | |
305 | atomic_read(&osb->alloc_stats.bg_allocs), | |
306 | atomic_read(&osb->alloc_stats.moves), | |
307 | atomic_read(&osb->alloc_stats.bg_extends)); | |
308 | ||
309 | out += snprintf(buf + out, len - out, | |
310 | "%10s => State: %u Descriptor: %llu Size: %u bits " | |
311 | "Default: %u bits\n", | |
312 | "LocalAlloc", osb->local_alloc_state, | |
313 | (unsigned long long)osb->la_last_gd, | |
314 | osb->local_alloc_bits, osb->local_alloc_default_bits); | |
315 | ||
316 | spin_lock(&osb->osb_lock); | |
317 | out += snprintf(buf + out, len - out, | |
b89c5428 TY |
318 | "%10s => InodeSlot: %d StolenInodes: %d, " |
319 | "MetaSlot: %d StolenMeta: %d\n", "Steal", | |
50397507 | 320 | osb->s_inode_steal_slot, |
b89c5428 TY |
321 | atomic_read(&osb->s_num_inodes_stolen), |
322 | osb->s_meta_steal_slot, | |
323 | atomic_read(&osb->s_num_meta_stolen)); | |
50397507 SM |
324 | spin_unlock(&osb->osb_lock); |
325 | ||
df152c24 SM |
326 | out += snprintf(buf + out, len - out, "OrphanScan => "); |
327 | out += snprintf(buf + out, len - out, "Local: %u Global: %u ", | |
328 | os->os_count, os->os_seqno); | |
329 | out += snprintf(buf + out, len - out, " Last Scan: "); | |
330 | if (atomic_read(&os->os_state) == ORPHAN_SCAN_INACTIVE) | |
331 | out += snprintf(buf + out, len - out, "Disabled\n"); | |
332 | else | |
333 | out += snprintf(buf + out, len - out, "%lu seconds ago\n", | |
334 | (get_seconds() - os->os_scantime.tv_sec)); | |
335 | ||
50397507 SM |
336 | out += snprintf(buf + out, len - out, "%10s => %3s %10s\n", |
337 | "Slots", "Num", "RecoGen"); | |
50397507 SM |
338 | for (i = 0; i < osb->max_slots; ++i) { |
339 | out += snprintf(buf + out, len - out, | |
340 | "%10s %c %3d %10d\n", | |
341 | " ", | |
342 | (i == osb->slot_num ? '*' : ' '), | |
343 | i, osb->slot_recovery_generations[i]); | |
344 | } | |
345 | ||
346 | return out; | |
347 | } | |
348 | ||
349 | static int ocfs2_osb_debug_open(struct inode *inode, struct file *file) | |
350 | { | |
351 | struct ocfs2_super *osb = inode->i_private; | |
352 | char *buf = NULL; | |
353 | ||
354 | buf = kmalloc(PAGE_SIZE, GFP_KERNEL); | |
355 | if (!buf) | |
356 | goto bail; | |
357 | ||
358 | i_size_write(inode, ocfs2_osb_dump(osb, buf, PAGE_SIZE)); | |
359 | ||
360 | file->private_data = buf; | |
361 | ||
362 | return 0; | |
363 | bail: | |
364 | return -ENOMEM; | |
365 | } | |
366 | ||
367 | static int ocfs2_debug_release(struct inode *inode, struct file *file) | |
368 | { | |
369 | kfree(file->private_data); | |
370 | return 0; | |
371 | } | |
372 | ||
373 | static ssize_t ocfs2_debug_read(struct file *file, char __user *buf, | |
374 | size_t nbytes, loff_t *ppos) | |
375 | { | |
376 | return simple_read_from_buffer(buf, nbytes, ppos, file->private_data, | |
377 | i_size_read(file->f_mapping->host)); | |
378 | } | |
379 | #else | |
380 | static int ocfs2_osb_debug_open(struct inode *inode, struct file *file) | |
381 | { | |
382 | return 0; | |
383 | } | |
384 | static int ocfs2_debug_release(struct inode *inode, struct file *file) | |
385 | { | |
386 | return 0; | |
387 | } | |
388 | static ssize_t ocfs2_debug_read(struct file *file, char __user *buf, | |
389 | size_t nbytes, loff_t *ppos) | |
390 | { | |
391 | return 0; | |
392 | } | |
393 | #endif /* CONFIG_DEBUG_FS */ | |
394 | ||
828c0950 | 395 | static const struct file_operations ocfs2_osb_debug_fops = { |
50397507 SM |
396 | .open = ocfs2_osb_debug_open, |
397 | .release = ocfs2_debug_release, | |
398 | .read = ocfs2_debug_read, | |
399 | .llseek = generic_file_llseek, | |
400 | }; | |
401 | ||
ccd979bd MF |
402 | static int ocfs2_sync_fs(struct super_block *sb, int wait) |
403 | { | |
bddb8eb3 | 404 | int status; |
ccd979bd MF |
405 | tid_t target; |
406 | struct ocfs2_super *osb = OCFS2_SB(sb); | |
407 | ||
ccd979bd MF |
408 | if (ocfs2_is_hard_readonly(osb)) |
409 | return -EROFS; | |
410 | ||
411 | if (wait) { | |
412 | status = ocfs2_flush_truncate_log(osb); | |
413 | if (status < 0) | |
414 | mlog_errno(status); | |
415 | } else { | |
416 | ocfs2_schedule_truncate_log_flush(osb, 0); | |
417 | } | |
418 | ||
2b4e30fb JB |
419 | if (jbd2_journal_start_commit(OCFS2_SB(sb)->journal->j_journal, |
420 | &target)) { | |
ccd979bd | 421 | if (wait) |
2b4e30fb JB |
422 | jbd2_log_wait_commit(OCFS2_SB(sb)->journal->j_journal, |
423 | target); | |
ccd979bd MF |
424 | } |
425 | return 0; | |
426 | } | |
427 | ||
1a224ad1 JK |
428 | static int ocfs2_need_system_inode(struct ocfs2_super *osb, int ino) |
429 | { | |
430 | if (!OCFS2_HAS_RO_COMPAT_FEATURE(osb->sb, OCFS2_FEATURE_RO_COMPAT_USRQUOTA) | |
431 | && (ino == USER_QUOTA_SYSTEM_INODE | |
432 | || ino == LOCAL_USER_QUOTA_SYSTEM_INODE)) | |
433 | return 0; | |
434 | if (!OCFS2_HAS_RO_COMPAT_FEATURE(osb->sb, OCFS2_FEATURE_RO_COMPAT_GRPQUOTA) | |
435 | && (ino == GROUP_QUOTA_SYSTEM_INODE | |
436 | || ino == LOCAL_GROUP_QUOTA_SYSTEM_INODE)) | |
437 | return 0; | |
438 | return 1; | |
439 | } | |
440 | ||
ccd979bd MF |
441 | static int ocfs2_init_global_system_inodes(struct ocfs2_super *osb) |
442 | { | |
443 | struct inode *new = NULL; | |
444 | int status = 0; | |
445 | int i; | |
446 | ||
5fa0613e | 447 | new = ocfs2_iget(osb, osb->root_blkno, OCFS2_FI_FLAG_SYSFILE, 0); |
ccd979bd MF |
448 | if (IS_ERR(new)) { |
449 | status = PTR_ERR(new); | |
450 | mlog_errno(status); | |
451 | goto bail; | |
452 | } | |
453 | osb->root_inode = new; | |
454 | ||
5fa0613e | 455 | new = ocfs2_iget(osb, osb->system_dir_blkno, OCFS2_FI_FLAG_SYSFILE, 0); |
ccd979bd MF |
456 | if (IS_ERR(new)) { |
457 | status = PTR_ERR(new); | |
458 | mlog_errno(status); | |
459 | goto bail; | |
460 | } | |
461 | osb->sys_root_inode = new; | |
462 | ||
463 | for (i = OCFS2_FIRST_ONLINE_SYSTEM_INODE; | |
464 | i <= OCFS2_LAST_GLOBAL_SYSTEM_INODE; i++) { | |
1a224ad1 JK |
465 | if (!ocfs2_need_system_inode(osb, i)) |
466 | continue; | |
ccd979bd MF |
467 | new = ocfs2_get_system_file_inode(osb, i, osb->slot_num); |
468 | if (!new) { | |
469 | ocfs2_release_system_inodes(osb); | |
470 | status = -EINVAL; | |
471 | mlog_errno(status); | |
472 | /* FIXME: Should ERROR_RO_FS */ | |
473 | mlog(ML_ERROR, "Unable to load system inode %d, " | |
474 | "possibly corrupt fs?", i); | |
475 | goto bail; | |
476 | } | |
477 | // the array now has one ref, so drop this one | |
478 | iput(new); | |
479 | } | |
480 | ||
481 | bail: | |
c1e8d35e TM |
482 | if (status) |
483 | mlog_errno(status); | |
ccd979bd MF |
484 | return status; |
485 | } | |
486 | ||
487 | static int ocfs2_init_local_system_inodes(struct ocfs2_super *osb) | |
488 | { | |
489 | struct inode *new = NULL; | |
490 | int status = 0; | |
491 | int i; | |
492 | ||
ccd979bd MF |
493 | for (i = OCFS2_LAST_GLOBAL_SYSTEM_INODE + 1; |
494 | i < NUM_SYSTEM_INODES; | |
495 | i++) { | |
1a224ad1 JK |
496 | if (!ocfs2_need_system_inode(osb, i)) |
497 | continue; | |
ccd979bd MF |
498 | new = ocfs2_get_system_file_inode(osb, i, osb->slot_num); |
499 | if (!new) { | |
500 | ocfs2_release_system_inodes(osb); | |
501 | status = -EINVAL; | |
502 | mlog(ML_ERROR, "status=%d, sysfile=%d, slot=%d\n", | |
503 | status, i, osb->slot_num); | |
504 | goto bail; | |
505 | } | |
506 | /* the array now has one ref, so drop this one */ | |
507 | iput(new); | |
508 | } | |
509 | ||
510 | bail: | |
c1e8d35e TM |
511 | if (status) |
512 | mlog_errno(status); | |
ccd979bd MF |
513 | return status; |
514 | } | |
515 | ||
bddb8eb3 | 516 | static void ocfs2_release_system_inodes(struct ocfs2_super *osb) |
ccd979bd | 517 | { |
bddb8eb3 | 518 | int i; |
ccd979bd MF |
519 | struct inode *inode; |
520 | ||
b4d693fc TM |
521 | for (i = 0; i < NUM_GLOBAL_SYSTEM_INODES; i++) { |
522 | inode = osb->global_system_inodes[i]; | |
ccd979bd MF |
523 | if (inode) { |
524 | iput(inode); | |
b4d693fc | 525 | osb->global_system_inodes[i] = NULL; |
ccd979bd MF |
526 | } |
527 | } | |
528 | ||
529 | inode = osb->sys_root_inode; | |
530 | if (inode) { | |
531 | iput(inode); | |
532 | osb->sys_root_inode = NULL; | |
533 | } | |
534 | ||
535 | inode = osb->root_inode; | |
536 | if (inode) { | |
537 | iput(inode); | |
538 | osb->root_inode = NULL; | |
539 | } | |
540 | ||
b4d693fc | 541 | if (!osb->local_system_inodes) |
c1e8d35e | 542 | return; |
b4d693fc TM |
543 | |
544 | for (i = 0; i < NUM_LOCAL_SYSTEM_INODES * osb->max_slots; i++) { | |
545 | if (osb->local_system_inodes[i]) { | |
546 | iput(osb->local_system_inodes[i]); | |
547 | osb->local_system_inodes[i] = NULL; | |
548 | } | |
549 | } | |
550 | ||
551 | kfree(osb->local_system_inodes); | |
552 | osb->local_system_inodes = NULL; | |
ccd979bd MF |
553 | } |
554 | ||
555 | /* We're allocating fs objects, use GFP_NOFS */ | |
556 | static struct inode *ocfs2_alloc_inode(struct super_block *sb) | |
557 | { | |
558 | struct ocfs2_inode_info *oi; | |
559 | ||
e6b4f8da | 560 | oi = kmem_cache_alloc(ocfs2_inode_cachep, GFP_NOFS); |
ccd979bd MF |
561 | if (!oi) |
562 | return NULL; | |
563 | ||
2931cdcb DW |
564 | oi->i_sync_tid = 0; |
565 | oi->i_datasync_tid = 0; | |
566 | ||
2b4e30fb | 567 | jbd2_journal_init_jbd_inode(&oi->ip_jinode, &oi->vfs_inode); |
ccd979bd MF |
568 | return &oi->vfs_inode; |
569 | } | |
570 | ||
fa0d7e3d | 571 | static void ocfs2_i_callback(struct rcu_head *head) |
ccd979bd | 572 | { |
fa0d7e3d | 573 | struct inode *inode = container_of(head, struct inode, i_rcu); |
ccd979bd MF |
574 | kmem_cache_free(ocfs2_inode_cachep, OCFS2_I(inode)); |
575 | } | |
576 | ||
fa0d7e3d NP |
577 | static void ocfs2_destroy_inode(struct inode *inode) |
578 | { | |
579 | call_rcu(&inode->i_rcu, ocfs2_i_callback); | |
580 | } | |
581 | ||
5a254031 MF |
582 | static unsigned long long ocfs2_max_file_offset(unsigned int bbits, |
583 | unsigned int cbits) | |
ccd979bd | 584 | { |
5a254031 MF |
585 | unsigned int bytes = 1 << cbits; |
586 | unsigned int trim = bytes; | |
587 | unsigned int bitshift = 32; | |
588 | ||
589 | /* | |
590 | * i_size and all block offsets in ocfs2 are always 64 bits | |
591 | * wide. i_clusters is 32 bits, in cluster-sized units. So on | |
592 | * 64 bit platforms, cluster size will be the limiting factor. | |
ccd979bd MF |
593 | */ |
594 | ||
595 | #if BITS_PER_LONG == 32 | |
90c699a9 | 596 | # if defined(CONFIG_LBDAF) |
2ecd05ae | 597 | BUILD_BUG_ON(sizeof(sector_t) != 8); |
5a254031 MF |
598 | /* |
599 | * We might be limited by page cache size. | |
600 | */ | |
601 | if (bytes > PAGE_CACHE_SIZE) { | |
602 | bytes = PAGE_CACHE_SIZE; | |
603 | trim = 1; | |
604 | /* | |
605 | * Shift by 31 here so that we don't get larger than | |
606 | * MAX_LFS_FILESIZE | |
607 | */ | |
608 | bitshift = 31; | |
609 | } | |
ccd979bd | 610 | # else |
5a254031 MF |
611 | /* |
612 | * We are limited by the size of sector_t. Use block size, as | |
613 | * that's what we expose to the VFS. | |
614 | */ | |
615 | bytes = 1 << bbits; | |
616 | trim = 1; | |
617 | bitshift = 31; | |
ccd979bd MF |
618 | # endif |
619 | #endif | |
620 | ||
5a254031 MF |
621 | /* |
622 | * Trim by a whole cluster when we can actually approach the | |
623 | * on-disk limits. Otherwise we can overflow i_clusters when | |
624 | * an extent start is at the max offset. | |
625 | */ | |
626 | return (((unsigned long long)bytes) << bitshift) - trim; | |
ccd979bd MF |
627 | } |
628 | ||
629 | static int ocfs2_remount(struct super_block *sb, int *flags, char *data) | |
630 | { | |
631 | int incompat_features; | |
632 | int ret = 0; | |
c0123ade | 633 | struct mount_options parsed_options; |
ccd979bd | 634 | struct ocfs2_super *osb = OCFS2_SB(sb); |
2c442719 | 635 | u32 tmp; |
ccd979bd | 636 | |
02b9984d TT |
637 | sync_filesystem(sb); |
638 | ||
5297aad8 JK |
639 | if (!ocfs2_parse_options(sb, data, &parsed_options, 1) || |
640 | !ocfs2_check_set_options(sb, &parsed_options)) { | |
ccd979bd MF |
641 | ret = -EINVAL; |
642 | goto out; | |
643 | } | |
644 | ||
2c442719 SM |
645 | tmp = OCFS2_MOUNT_HB_LOCAL | OCFS2_MOUNT_HB_GLOBAL | |
646 | OCFS2_MOUNT_HB_NONE; | |
647 | if ((osb->s_mount_opt & tmp) != (parsed_options.mount_opt & tmp)) { | |
ccd979bd MF |
648 | ret = -EINVAL; |
649 | mlog(ML_ERROR, "Cannot change heartbeat mode on remount\n"); | |
650 | goto out; | |
651 | } | |
652 | ||
653 | if ((osb->s_mount_opt & OCFS2_MOUNT_DATA_WRITEBACK) != | |
c0123ade | 654 | (parsed_options.mount_opt & OCFS2_MOUNT_DATA_WRITEBACK)) { |
ccd979bd MF |
655 | ret = -EINVAL; |
656 | mlog(ML_ERROR, "Cannot change data mode on remount\n"); | |
657 | goto out; | |
658 | } | |
659 | ||
12462f1d JB |
660 | /* Probably don't want this on remount; it might |
661 | * mess with other nodes */ | |
662 | if (!(osb->s_mount_opt & OCFS2_MOUNT_INODE64) && | |
663 | (parsed_options.mount_opt & OCFS2_MOUNT_INODE64)) { | |
664 | ret = -EINVAL; | |
665 | mlog(ML_ERROR, "Cannot enable inode64 on remount\n"); | |
666 | goto out; | |
667 | } | |
668 | ||
ccd979bd MF |
669 | /* We're going to/from readonly mode. */ |
670 | if ((*flags & MS_RDONLY) != (sb->s_flags & MS_RDONLY)) { | |
19ece546 JK |
671 | /* Disable quota accounting before remounting RO */ |
672 | if (*flags & MS_RDONLY) { | |
673 | ret = ocfs2_susp_quotas(osb, 0); | |
674 | if (ret < 0) | |
675 | goto out; | |
676 | } | |
ccd979bd MF |
677 | /* Lock here so the check of HARD_RO and the potential |
678 | * setting of SOFT_RO is atomic. */ | |
679 | spin_lock(&osb->osb_lock); | |
680 | if (osb->osb_flags & OCFS2_OSB_HARD_RO) { | |
681 | mlog(ML_ERROR, "Remount on readonly device is forbidden.\n"); | |
682 | ret = -EROFS; | |
683 | goto unlock_osb; | |
684 | } | |
685 | ||
686 | if (*flags & MS_RDONLY) { | |
ccd979bd MF |
687 | sb->s_flags |= MS_RDONLY; |
688 | osb->osb_flags |= OCFS2_OSB_SOFT_RO; | |
689 | } else { | |
ccd979bd MF |
690 | if (osb->osb_flags & OCFS2_OSB_ERROR_FS) { |
691 | mlog(ML_ERROR, "Cannot remount RDWR " | |
692 | "filesystem due to previous errors.\n"); | |
693 | ret = -EROFS; | |
694 | goto unlock_osb; | |
695 | } | |
696 | incompat_features = OCFS2_HAS_RO_COMPAT_FEATURE(sb, ~OCFS2_FEATURE_RO_COMPAT_SUPP); | |
697 | if (incompat_features) { | |
698 | mlog(ML_ERROR, "Cannot remount RDWR because " | |
699 | "of unsupported optional features " | |
700 | "(%x).\n", incompat_features); | |
701 | ret = -EINVAL; | |
702 | goto unlock_osb; | |
703 | } | |
704 | sb->s_flags &= ~MS_RDONLY; | |
705 | osb->osb_flags &= ~OCFS2_OSB_SOFT_RO; | |
706 | } | |
32a42d39 | 707 | trace_ocfs2_remount(sb->s_flags, osb->osb_flags, *flags); |
ccd979bd MF |
708 | unlock_osb: |
709 | spin_unlock(&osb->osb_lock); | |
19ece546 JK |
710 | /* Enable quota accounting after remounting RW */ |
711 | if (!ret && !(*flags & MS_RDONLY)) { | |
712 | if (sb_any_quota_suspended(sb)) | |
713 | ret = ocfs2_susp_quotas(osb, 1); | |
714 | else | |
715 | ret = ocfs2_enable_quotas(osb); | |
716 | if (ret < 0) { | |
717 | /* Return back changes... */ | |
718 | spin_lock(&osb->osb_lock); | |
719 | sb->s_flags |= MS_RDONLY; | |
720 | osb->osb_flags |= OCFS2_OSB_SOFT_RO; | |
721 | spin_unlock(&osb->osb_lock); | |
722 | goto out; | |
723 | } | |
724 | } | |
ccd979bd MF |
725 | } |
726 | ||
727 | if (!ret) { | |
ccd979bd MF |
728 | /* Only save off the new mount options in case of a successful |
729 | * remount. */ | |
c0123ade TY |
730 | osb->s_mount_opt = parsed_options.mount_opt; |
731 | osb->s_atime_quantum = parsed_options.atime_quantum; | |
732 | osb->preferred_slot = parsed_options.slot; | |
d147b3d6 MF |
733 | if (parsed_options.commit_interval) |
734 | osb->osb_commit_interval = parsed_options.commit_interval; | |
e001e796 MF |
735 | |
736 | if (!ocfs2_is_hard_readonly(osb)) | |
737 | ocfs2_set_journal_params(osb); | |
57b09bb5 JK |
738 | |
739 | sb->s_flags = (sb->s_flags & ~MS_POSIXACL) | | |
740 | ((osb->s_mount_opt & OCFS2_MOUNT_POSIX_ACL) ? | |
741 | MS_POSIXACL : 0); | |
ccd979bd MF |
742 | } |
743 | out: | |
744 | return ret; | |
745 | } | |
746 | ||
747 | static int ocfs2_sb_probe(struct super_block *sb, | |
748 | struct buffer_head **bh, | |
73be192b JB |
749 | int *sector_size, |
750 | struct ocfs2_blockcheck_stats *stats) | |
ccd979bd | 751 | { |
bddb8eb3 | 752 | int status, tmpstat; |
ccd979bd MF |
753 | struct ocfs1_vol_disk_hdr *hdr; |
754 | struct ocfs2_dinode *di; | |
755 | int blksize; | |
756 | ||
757 | *bh = NULL; | |
758 | ||
759 | /* may be > 512 */ | |
e1defc4f | 760 | *sector_size = bdev_logical_block_size(sb->s_bdev); |
ccd979bd MF |
761 | if (*sector_size > OCFS2_MAX_BLOCKSIZE) { |
762 | mlog(ML_ERROR, "Hardware sector size too large: %d (max=%d)\n", | |
763 | *sector_size, OCFS2_MAX_BLOCKSIZE); | |
764 | status = -EINVAL; | |
765 | goto bail; | |
766 | } | |
767 | ||
768 | /* Can this really happen? */ | |
769 | if (*sector_size < OCFS2_MIN_BLOCKSIZE) | |
770 | *sector_size = OCFS2_MIN_BLOCKSIZE; | |
771 | ||
772 | /* check block zero for old format */ | |
773 | status = ocfs2_get_sector(sb, bh, 0, *sector_size); | |
774 | if (status < 0) { | |
775 | mlog_errno(status); | |
776 | goto bail; | |
777 | } | |
778 | hdr = (struct ocfs1_vol_disk_hdr *) (*bh)->b_data; | |
779 | if (hdr->major_version == OCFS1_MAJOR_VERSION) { | |
780 | mlog(ML_ERROR, "incompatible version: %u.%u\n", | |
781 | hdr->major_version, hdr->minor_version); | |
782 | status = -EINVAL; | |
783 | } | |
784 | if (memcmp(hdr->signature, OCFS1_VOLUME_SIGNATURE, | |
785 | strlen(OCFS1_VOLUME_SIGNATURE)) == 0) { | |
786 | mlog(ML_ERROR, "incompatible volume signature: %8s\n", | |
787 | hdr->signature); | |
788 | status = -EINVAL; | |
789 | } | |
790 | brelse(*bh); | |
791 | *bh = NULL; | |
792 | if (status < 0) { | |
793 | mlog(ML_ERROR, "This is an ocfs v1 filesystem which must be " | |
794 | "upgraded before mounting with ocfs v2\n"); | |
795 | goto bail; | |
796 | } | |
797 | ||
798 | /* | |
799 | * Now check at magic offset for 512, 1024, 2048, 4096 | |
800 | * blocksizes. 4096 is the maximum blocksize because it is | |
801 | * the minimum clustersize. | |
802 | */ | |
803 | status = -EINVAL; | |
804 | for (blksize = *sector_size; | |
805 | blksize <= OCFS2_MAX_BLOCKSIZE; | |
806 | blksize <<= 1) { | |
807 | tmpstat = ocfs2_get_sector(sb, bh, | |
808 | OCFS2_SUPER_BLOCK_BLKNO, | |
809 | blksize); | |
810 | if (tmpstat < 0) { | |
811 | status = tmpstat; | |
812 | mlog_errno(status); | |
fb5cbe9e | 813 | break; |
ccd979bd MF |
814 | } |
815 | di = (struct ocfs2_dinode *) (*bh)->b_data; | |
73be192b | 816 | memset(stats, 0, sizeof(struct ocfs2_blockcheck_stats)); |
1c1d9793 | 817 | spin_lock_init(&stats->b_lock); |
fb5cbe9e JB |
818 | tmpstat = ocfs2_verify_volume(di, *bh, blksize, stats); |
819 | if (tmpstat < 0) { | |
820 | brelse(*bh); | |
821 | *bh = NULL; | |
822 | } | |
823 | if (tmpstat != -EAGAIN) { | |
824 | status = tmpstat; | |
ccd979bd | 825 | break; |
fb5cbe9e | 826 | } |
ccd979bd MF |
827 | } |
828 | ||
829 | bail: | |
830 | return status; | |
831 | } | |
832 | ||
c271c5c2 SM |
833 | static int ocfs2_verify_heartbeat(struct ocfs2_super *osb) |
834 | { | |
2c442719 SM |
835 | u32 hb_enabled = OCFS2_MOUNT_HB_LOCAL | OCFS2_MOUNT_HB_GLOBAL; |
836 | ||
837 | if (osb->s_mount_opt & hb_enabled) { | |
838 | if (ocfs2_mount_local(osb)) { | |
c271c5c2 SM |
839 | mlog(ML_ERROR, "Cannot heartbeat on a locally " |
840 | "mounted device.\n"); | |
841 | return -EINVAL; | |
842 | } | |
2c442719 | 843 | if (ocfs2_userspace_stack(osb)) { |
b61817e1 JB |
844 | mlog(ML_ERROR, "Userspace stack expected, but " |
845 | "o2cb heartbeat arguments passed to mount\n"); | |
846 | return -EINVAL; | |
847 | } | |
2c442719 SM |
848 | if (((osb->s_mount_opt & OCFS2_MOUNT_HB_GLOBAL) && |
849 | !ocfs2_cluster_o2cb_global_heartbeat(osb)) || | |
850 | ((osb->s_mount_opt & OCFS2_MOUNT_HB_LOCAL) && | |
851 | ocfs2_cluster_o2cb_global_heartbeat(osb))) { | |
852 | mlog(ML_ERROR, "Mismatching o2cb heartbeat modes\n"); | |
853 | return -EINVAL; | |
854 | } | |
b61817e1 JB |
855 | } |
856 | ||
2c442719 | 857 | if (!(osb->s_mount_opt & hb_enabled)) { |
b61817e1 JB |
858 | if (!ocfs2_mount_local(osb) && !ocfs2_is_hard_readonly(osb) && |
859 | !ocfs2_userspace_stack(osb)) { | |
c271c5c2 SM |
860 | mlog(ML_ERROR, "Heartbeat has to be started to mount " |
861 | "a read-write clustered device.\n"); | |
862 | return -EINVAL; | |
863 | } | |
864 | } | |
865 | ||
866 | return 0; | |
867 | } | |
868 | ||
b61817e1 JB |
869 | /* |
870 | * If we're using a userspace stack, mount should have passed | |
871 | * a name that matches the disk. If not, mount should not | |
872 | * have passed a stack. | |
873 | */ | |
874 | static int ocfs2_verify_userspace_stack(struct ocfs2_super *osb, | |
875 | struct mount_options *mopt) | |
876 | { | |
877 | if (!ocfs2_userspace_stack(osb) && mopt->cluster_stack[0]) { | |
878 | mlog(ML_ERROR, | |
879 | "cluster stack passed to mount, but this filesystem " | |
880 | "does not support it\n"); | |
881 | return -EINVAL; | |
882 | } | |
883 | ||
884 | if (ocfs2_userspace_stack(osb) && | |
885 | strncmp(osb->osb_cluster_stack, mopt->cluster_stack, | |
886 | OCFS2_STACK_LABEL_LEN)) { | |
887 | mlog(ML_ERROR, | |
888 | "cluster stack passed to mount (\"%s\") does not " | |
889 | "match the filesystem (\"%s\")\n", | |
890 | mopt->cluster_stack, | |
891 | osb->osb_cluster_stack); | |
892 | return -EINVAL; | |
893 | } | |
894 | ||
895 | return 0; | |
896 | } | |
897 | ||
19ece546 JK |
898 | static int ocfs2_susp_quotas(struct ocfs2_super *osb, int unsuspend) |
899 | { | |
900 | int type; | |
901 | struct super_block *sb = osb->sb; | |
902 | unsigned int feature[MAXQUOTAS] = { OCFS2_FEATURE_RO_COMPAT_USRQUOTA, | |
903 | OCFS2_FEATURE_RO_COMPAT_GRPQUOTA}; | |
904 | int status = 0; | |
905 | ||
906 | for (type = 0; type < MAXQUOTAS; type++) { | |
907 | if (!OCFS2_HAS_RO_COMPAT_FEATURE(sb, feature[type])) | |
908 | continue; | |
909 | if (unsuspend) | |
0f0dd62f | 910 | status = dquot_resume(sb, type); |
eea7feb0 JK |
911 | else { |
912 | struct ocfs2_mem_dqinfo *oinfo; | |
913 | ||
914 | /* Cancel periodic syncing before suspending */ | |
915 | oinfo = sb_dqinfo(sb, type)->dqi_priv; | |
916 | cancel_delayed_work_sync(&oinfo->dqi_sync_work); | |
0f0dd62f | 917 | status = dquot_suspend(sb, type); |
eea7feb0 | 918 | } |
19ece546 JK |
919 | if (status < 0) |
920 | break; | |
921 | } | |
922 | if (status < 0) | |
923 | mlog(ML_ERROR, "Failed to suspend/unsuspend quotas on " | |
924 | "remount (error = %d).\n", status); | |
925 | return status; | |
926 | } | |
927 | ||
928 | static int ocfs2_enable_quotas(struct ocfs2_super *osb) | |
929 | { | |
930 | struct inode *inode[MAXQUOTAS] = { NULL, NULL }; | |
931 | struct super_block *sb = osb->sb; | |
932 | unsigned int feature[MAXQUOTAS] = { OCFS2_FEATURE_RO_COMPAT_USRQUOTA, | |
933 | OCFS2_FEATURE_RO_COMPAT_GRPQUOTA}; | |
934 | unsigned int ino[MAXQUOTAS] = { LOCAL_USER_QUOTA_SYSTEM_INODE, | |
935 | LOCAL_GROUP_QUOTA_SYSTEM_INODE }; | |
936 | int status; | |
937 | int type; | |
938 | ||
939 | sb_dqopt(sb)->flags |= DQUOT_QUOTA_SYS_FILE | DQUOT_NEGATIVE_USAGE; | |
940 | for (type = 0; type < MAXQUOTAS; type++) { | |
941 | if (!OCFS2_HAS_RO_COMPAT_FEATURE(sb, feature[type])) | |
942 | continue; | |
943 | inode[type] = ocfs2_get_system_file_inode(osb, ino[type], | |
944 | osb->slot_num); | |
945 | if (!inode[type]) { | |
946 | status = -ENOENT; | |
947 | goto out_quota_off; | |
948 | } | |
287a8095 CH |
949 | status = dquot_enable(inode[type], type, QFMT_OCFS2, |
950 | DQUOT_USAGE_ENABLED); | |
19ece546 JK |
951 | if (status < 0) |
952 | goto out_quota_off; | |
953 | } | |
954 | ||
955 | for (type = 0; type < MAXQUOTAS; type++) | |
956 | iput(inode[type]); | |
957 | return 0; | |
958 | out_quota_off: | |
959 | ocfs2_disable_quotas(osb); | |
960 | for (type = 0; type < MAXQUOTAS; type++) | |
961 | iput(inode[type]); | |
962 | mlog_errno(status); | |
963 | return status; | |
964 | } | |
965 | ||
966 | static void ocfs2_disable_quotas(struct ocfs2_super *osb) | |
967 | { | |
968 | int type; | |
969 | struct inode *inode; | |
970 | struct super_block *sb = osb->sb; | |
c06bcbfa | 971 | struct ocfs2_mem_dqinfo *oinfo; |
19ece546 JK |
972 | |
973 | /* We mostly ignore errors in this function because there's not much | |
974 | * we can do when we see them */ | |
975 | for (type = 0; type < MAXQUOTAS; type++) { | |
976 | if (!sb_has_quota_loaded(sb, type)) | |
977 | continue; | |
c06bcbfa JK |
978 | /* Cancel periodic syncing before we grab dqonoff_mutex */ |
979 | oinfo = sb_dqinfo(sb, type)->dqi_priv; | |
980 | cancel_delayed_work_sync(&oinfo->dqi_sync_work); | |
19ece546 JK |
981 | inode = igrab(sb->s_dquot.files[type]); |
982 | /* Turn off quotas. This will remove all dquot structures from | |
983 | * memory and so they will be automatically synced to global | |
984 | * quota files */ | |
0f0dd62f CH |
985 | dquot_disable(sb, type, DQUOT_USAGE_ENABLED | |
986 | DQUOT_LIMITS_ENABLED); | |
19ece546 JK |
987 | if (!inode) |
988 | continue; | |
989 | iput(inode); | |
990 | } | |
991 | } | |
992 | ||
993 | /* Handle quota on quotactl */ | |
f00c9e44 | 994 | static int ocfs2_quota_on(struct super_block *sb, int type, int format_id) |
19ece546 JK |
995 | { |
996 | unsigned int feature[MAXQUOTAS] = { OCFS2_FEATURE_RO_COMPAT_USRQUOTA, | |
997 | OCFS2_FEATURE_RO_COMPAT_GRPQUOTA}; | |
998 | ||
999 | if (!OCFS2_HAS_RO_COMPAT_FEATURE(sb, feature[type])) | |
1000 | return -EINVAL; | |
1001 | ||
287a8095 CH |
1002 | return dquot_enable(sb_dqopt(sb)->files[type], type, |
1003 | format_id, DQUOT_LIMITS_ENABLED); | |
19ece546 JK |
1004 | } |
1005 | ||
1006 | /* Handle quota off quotactl */ | |
307ae18a | 1007 | static int ocfs2_quota_off(struct super_block *sb, int type) |
19ece546 | 1008 | { |
0f0dd62f | 1009 | return dquot_disable(sb, type, DQUOT_LIMITS_ENABLED); |
19ece546 JK |
1010 | } |
1011 | ||
0d54b217 | 1012 | static const struct quotactl_ops ocfs2_quotactl_ops = { |
f00c9e44 | 1013 | .quota_on_meta = ocfs2_quota_on, |
19ece546 | 1014 | .quota_off = ocfs2_quota_off, |
287a8095 CH |
1015 | .quota_sync = dquot_quota_sync, |
1016 | .get_info = dquot_get_dqinfo, | |
1017 | .set_info = dquot_set_dqinfo, | |
1018 | .get_dqblk = dquot_get_dqblk, | |
1019 | .set_dqblk = dquot_set_dqblk, | |
19ece546 JK |
1020 | }; |
1021 | ||
ccd979bd MF |
1022 | static int ocfs2_fill_super(struct super_block *sb, void *data, int silent) |
1023 | { | |
1024 | struct dentry *root; | |
1025 | int status, sector_size; | |
c0123ade | 1026 | struct mount_options parsed_options; |
ccd979bd MF |
1027 | struct inode *inode = NULL; |
1028 | struct ocfs2_super *osb = NULL; | |
1029 | struct buffer_head *bh = NULL; | |
49fa8140 | 1030 | char nodestr[12]; |
73be192b | 1031 | struct ocfs2_blockcheck_stats stats; |
ccd979bd | 1032 | |
32a42d39 | 1033 | trace_ocfs2_fill_super(sb, data, silent); |
ccd979bd | 1034 | |
c0123ade | 1035 | if (!ocfs2_parse_options(sb, data, &parsed_options, 0)) { |
ccd979bd MF |
1036 | status = -EINVAL; |
1037 | goto read_super_error; | |
1038 | } | |
1039 | ||
1040 | /* probe for superblock */ | |
73be192b | 1041 | status = ocfs2_sb_probe(sb, &bh, §or_size, &stats); |
ccd979bd MF |
1042 | if (status < 0) { |
1043 | mlog(ML_ERROR, "superblock probe failed!\n"); | |
1044 | goto read_super_error; | |
1045 | } | |
1046 | ||
73be192b | 1047 | status = ocfs2_initialize_super(sb, bh, sector_size, &stats); |
ccd979bd MF |
1048 | osb = OCFS2_SB(sb); |
1049 | if (status < 0) { | |
1050 | mlog_errno(status); | |
1051 | goto read_super_error; | |
1052 | } | |
1053 | brelse(bh); | |
1054 | bh = NULL; | |
a68979b8 | 1055 | |
5297aad8 JK |
1056 | if (!ocfs2_check_set_options(sb, &parsed_options)) { |
1057 | status = -EINVAL; | |
1058 | goto read_super_error; | |
1059 | } | |
c0123ade TY |
1060 | osb->s_mount_opt = parsed_options.mount_opt; |
1061 | osb->s_atime_quantum = parsed_options.atime_quantum; | |
1062 | osb->preferred_slot = parsed_options.slot; | |
d147b3d6 | 1063 | osb->osb_commit_interval = parsed_options.commit_interval; |
73c8a800 MF |
1064 | |
1065 | ocfs2_la_set_sizes(osb, parsed_options.localalloc_opt); | |
d02f00cc | 1066 | osb->osb_resv_level = parsed_options.resv_level; |
83f92318 MF |
1067 | osb->osb_dir_resv_level = parsed_options.resv_level; |
1068 | if (parsed_options.dir_resv_level == -1) | |
1069 | osb->osb_dir_resv_level = parsed_options.resv_level; | |
1070 | else | |
1071 | osb->osb_dir_resv_level = parsed_options.dir_resv_level; | |
ccd979bd | 1072 | |
b61817e1 JB |
1073 | status = ocfs2_verify_userspace_stack(osb, &parsed_options); |
1074 | if (status) | |
1075 | goto read_super_error; | |
1076 | ||
ccd979bd MF |
1077 | sb->s_magic = OCFS2_SUPER_MAGIC; |
1078 | ||
9e1f1de0 | 1079 | sb->s_flags = (sb->s_flags & ~(MS_POSIXACL | MS_NOSEC)) | |
a68979b8 TY |
1080 | ((osb->s_mount_opt & OCFS2_MOUNT_POSIX_ACL) ? MS_POSIXACL : 0); |
1081 | ||
ccd979bd MF |
1082 | /* Hard readonly mode only if: bdev_read_only, MS_RDONLY, |
1083 | * heartbeat=none */ | |
1084 | if (bdev_read_only(sb->s_bdev)) { | |
1085 | if (!(sb->s_flags & MS_RDONLY)) { | |
1086 | status = -EACCES; | |
1087 | mlog(ML_ERROR, "Readonly device detected but readonly " | |
1088 | "mount was not specified.\n"); | |
1089 | goto read_super_error; | |
1090 | } | |
1091 | ||
1092 | /* You should not be able to start a local heartbeat | |
1093 | * on a readonly device. */ | |
1094 | if (osb->s_mount_opt & OCFS2_MOUNT_HB_LOCAL) { | |
1095 | status = -EROFS; | |
1096 | mlog(ML_ERROR, "Local heartbeat specified on readonly " | |
1097 | "device.\n"); | |
1098 | goto read_super_error; | |
1099 | } | |
1100 | ||
1101 | status = ocfs2_check_journals_nolocks(osb); | |
1102 | if (status < 0) { | |
1103 | if (status == -EROFS) | |
1104 | mlog(ML_ERROR, "Recovery required on readonly " | |
1105 | "file system, but write access is " | |
1106 | "unavailable.\n"); | |
1107 | else | |
2bd63216 | 1108 | mlog_errno(status); |
ccd979bd MF |
1109 | goto read_super_error; |
1110 | } | |
1111 | ||
1112 | ocfs2_set_ro_flag(osb, 1); | |
1113 | ||
619c200d SM |
1114 | printk(KERN_NOTICE "ocfs2: Readonly device (%s) detected. " |
1115 | "Cluster services will not be used for this mount. " | |
1116 | "Recovery will be skipped.\n", osb->dev_str); | |
ccd979bd MF |
1117 | } |
1118 | ||
1119 | if (!ocfs2_is_hard_readonly(osb)) { | |
ccd979bd MF |
1120 | if (sb->s_flags & MS_RDONLY) |
1121 | ocfs2_set_ro_flag(osb, 0); | |
1122 | } | |
1123 | ||
c271c5c2 SM |
1124 | status = ocfs2_verify_heartbeat(osb); |
1125 | if (status < 0) { | |
1126 | mlog_errno(status); | |
1127 | goto read_super_error; | |
1128 | } | |
1129 | ||
ccd979bd MF |
1130 | osb->osb_debug_root = debugfs_create_dir(osb->uuid_str, |
1131 | ocfs2_debugfs_root); | |
1132 | if (!osb->osb_debug_root) { | |
1133 | status = -EINVAL; | |
1134 | mlog(ML_ERROR, "Unable to create per-mount debugfs root.\n"); | |
1135 | goto read_super_error; | |
1136 | } | |
1137 | ||
50397507 SM |
1138 | osb->osb_ctxt = debugfs_create_file("fs_state", S_IFREG|S_IRUSR, |
1139 | osb->osb_debug_root, | |
1140 | osb, | |
1141 | &ocfs2_osb_debug_fops); | |
1142 | if (!osb->osb_ctxt) { | |
1143 | status = -EINVAL; | |
1144 | mlog_errno(status); | |
1145 | goto read_super_error; | |
1146 | } | |
1147 | ||
73be192b JB |
1148 | if (ocfs2_meta_ecc(osb)) { |
1149 | status = ocfs2_blockcheck_stats_debugfs_install( | |
1150 | &osb->osb_ecc_stats, | |
1151 | osb->osb_debug_root); | |
1152 | if (status) { | |
1153 | mlog(ML_ERROR, | |
1154 | "Unable to create blockcheck statistics " | |
1155 | "files\n"); | |
1156 | goto read_super_error; | |
1157 | } | |
1158 | } | |
1159 | ||
ccd979bd | 1160 | status = ocfs2_mount_volume(sb); |
ccd979bd MF |
1161 | if (status < 0) |
1162 | goto read_super_error; | |
1163 | ||
be0d93f0 AV |
1164 | if (osb->root_inode) |
1165 | inode = igrab(osb->root_inode); | |
1166 | ||
ccd979bd MF |
1167 | if (!inode) { |
1168 | status = -EIO; | |
1169 | mlog_errno(status); | |
1170 | goto read_super_error; | |
1171 | } | |
1172 | ||
48fde701 | 1173 | root = d_make_root(inode); |
ccd979bd MF |
1174 | if (!root) { |
1175 | status = -ENOMEM; | |
1176 | mlog_errno(status); | |
1177 | goto read_super_error; | |
1178 | } | |
1179 | ||
1180 | sb->s_root = root; | |
1181 | ||
1182 | ocfs2_complete_mount_recovery(osb); | |
1183 | ||
c271c5c2 SM |
1184 | if (ocfs2_mount_local(osb)) |
1185 | snprintf(nodestr, sizeof(nodestr), "local"); | |
1186 | else | |
19fdb624 | 1187 | snprintf(nodestr, sizeof(nodestr), "%u", osb->node_num); |
c271c5c2 SM |
1188 | |
1189 | printk(KERN_INFO "ocfs2: Mounting device (%s) on (node %s, slot %d) " | |
781ee3e2 | 1190 | "with %s data mode.\n", |
c271c5c2 | 1191 | osb->dev_str, nodestr, osb->slot_num, |
ccd979bd MF |
1192 | osb->s_mount_opt & OCFS2_MOUNT_DATA_WRITEBACK ? "writeback" : |
1193 | "ordered"); | |
1194 | ||
1195 | atomic_set(&osb->vol_state, VOLUME_MOUNTED); | |
1196 | wake_up(&osb->osb_mount_event); | |
1197 | ||
19ece546 JK |
1198 | /* Now we can initialize quotas because we can afford to wait |
1199 | * for cluster locks recovery now. That also means that truncation | |
1200 | * log recovery can happen but that waits for proper quota setup */ | |
1201 | if (!(sb->s_flags & MS_RDONLY)) { | |
1202 | status = ocfs2_enable_quotas(osb); | |
1203 | if (status < 0) { | |
1204 | /* We have to err-out specially here because | |
1205 | * s_root is already set */ | |
1206 | mlog_errno(status); | |
1207 | atomic_set(&osb->vol_state, VOLUME_DISABLED); | |
1208 | wake_up(&osb->osb_mount_event); | |
19ece546 JK |
1209 | return status; |
1210 | } | |
1211 | } | |
1212 | ||
1213 | ocfs2_complete_quota_recovery(osb); | |
1214 | ||
1215 | /* Now we wake up again for processes waiting for quotas */ | |
1216 | atomic_set(&osb->vol_state, VOLUME_MOUNTED_QUOTAS); | |
1217 | wake_up(&osb->osb_mount_event); | |
1218 | ||
df152c24 | 1219 | /* Start this when the mount is almost sure of being successful */ |
8b712cd5 | 1220 | ocfs2_orphan_scan_start(osb); |
df152c24 | 1221 | |
ccd979bd MF |
1222 | return status; |
1223 | ||
1224 | read_super_error: | |
a81cb88b | 1225 | brelse(bh); |
ccd979bd | 1226 | |
ccd979bd MF |
1227 | if (osb) { |
1228 | atomic_set(&osb->vol_state, VOLUME_DISABLED); | |
1229 | wake_up(&osb->osb_mount_event); | |
1230 | ocfs2_dismount_volume(sb, 1); | |
1231 | } | |
1232 | ||
c1e8d35e TM |
1233 | if (status) |
1234 | mlog_errno(status); | |
ccd979bd MF |
1235 | return status; |
1236 | } | |
1237 | ||
152a0836 | 1238 | static struct dentry *ocfs2_mount(struct file_system_type *fs_type, |
454e2398 DH |
1239 | int flags, |
1240 | const char *dev_name, | |
152a0836 | 1241 | void *data) |
ccd979bd | 1242 | { |
152a0836 | 1243 | return mount_bdev(fs_type, flags, dev_name, data, ocfs2_fill_super); |
ccd979bd MF |
1244 | } |
1245 | ||
1246 | static struct file_system_type ocfs2_fs_type = { | |
1247 | .owner = THIS_MODULE, | |
1248 | .name = "ocfs2", | |
152a0836 | 1249 | .mount = ocfs2_mount, |
8ed6b237 | 1250 | .kill_sb = kill_block_super, |
1ba9da2f | 1251 | .fs_flags = FS_REQUIRES_DEV|FS_RENAME_DOES_D_MOVE, |
ccd979bd MF |
1252 | .next = NULL |
1253 | }; | |
91417705 | 1254 | MODULE_ALIAS_FS("ocfs2"); |
ccd979bd | 1255 | |
5297aad8 JK |
1256 | static int ocfs2_check_set_options(struct super_block *sb, |
1257 | struct mount_options *options) | |
1258 | { | |
1259 | if (options->mount_opt & OCFS2_MOUNT_USRQUOTA && | |
1260 | !OCFS2_HAS_RO_COMPAT_FEATURE(sb, | |
1261 | OCFS2_FEATURE_RO_COMPAT_USRQUOTA)) { | |
1262 | mlog(ML_ERROR, "User quotas were requested, but this " | |
1263 | "filesystem does not have the feature enabled.\n"); | |
1264 | return 0; | |
1265 | } | |
1266 | if (options->mount_opt & OCFS2_MOUNT_GRPQUOTA && | |
1267 | !OCFS2_HAS_RO_COMPAT_FEATURE(sb, | |
1268 | OCFS2_FEATURE_RO_COMPAT_GRPQUOTA)) { | |
1269 | mlog(ML_ERROR, "Group quotas were requested, but this " | |
1270 | "filesystem does not have the feature enabled.\n"); | |
1271 | return 0; | |
1272 | } | |
1273 | if (options->mount_opt & OCFS2_MOUNT_POSIX_ACL && | |
1274 | !OCFS2_HAS_INCOMPAT_FEATURE(sb, OCFS2_FEATURE_INCOMPAT_XATTR)) { | |
1275 | mlog(ML_ERROR, "ACL support requested but extended attributes " | |
1276 | "feature is not enabled\n"); | |
1277 | return 0; | |
1278 | } | |
1279 | /* No ACL setting specified? Use XATTR feature... */ | |
1280 | if (!(options->mount_opt & (OCFS2_MOUNT_POSIX_ACL | | |
1281 | OCFS2_MOUNT_NO_POSIX_ACL))) { | |
1282 | if (OCFS2_HAS_INCOMPAT_FEATURE(sb, OCFS2_FEATURE_INCOMPAT_XATTR)) | |
1283 | options->mount_opt |= OCFS2_MOUNT_POSIX_ACL; | |
1284 | else | |
1285 | options->mount_opt |= OCFS2_MOUNT_NO_POSIX_ACL; | |
1286 | } | |
1287 | return 1; | |
1288 | } | |
1289 | ||
ccd979bd MF |
1290 | static int ocfs2_parse_options(struct super_block *sb, |
1291 | char *options, | |
c0123ade | 1292 | struct mount_options *mopt, |
ccd979bd MF |
1293 | int is_remount) |
1294 | { | |
52c303c5 | 1295 | int status, user_stack = 0; |
ccd979bd | 1296 | char *p; |
2c442719 | 1297 | u32 tmp; |
ccd979bd | 1298 | |
32a42d39 | 1299 | trace_ocfs2_parse_options(is_remount, options ? options : "(none)"); |
ccd979bd | 1300 | |
d147b3d6 | 1301 | mopt->commit_interval = 0; |
4b37fcb7 | 1302 | mopt->mount_opt = OCFS2_MOUNT_NOINTR; |
c0123ade TY |
1303 | mopt->atime_quantum = OCFS2_DEFAULT_ATIME_QUANTUM; |
1304 | mopt->slot = OCFS2_INVALID_SLOT; | |
73c8a800 | 1305 | mopt->localalloc_opt = -1; |
b61817e1 | 1306 | mopt->cluster_stack[0] = '\0'; |
d02f00cc | 1307 | mopt->resv_level = OCFS2_DEFAULT_RESV_LEVEL; |
83f92318 | 1308 | mopt->dir_resv_level = -1; |
ccd979bd MF |
1309 | |
1310 | if (!options) { | |
1311 | status = 1; | |
1312 | goto bail; | |
1313 | } | |
1314 | ||
1315 | while ((p = strsep(&options, ",")) != NULL) { | |
1316 | int token, option; | |
1317 | substring_t args[MAX_OPT_ARGS]; | |
1318 | ||
1319 | if (!*p) | |
1320 | continue; | |
1321 | ||
1322 | token = match_token(p, tokens, args); | |
1323 | switch (token) { | |
1324 | case Opt_hb_local: | |
c0123ade | 1325 | mopt->mount_opt |= OCFS2_MOUNT_HB_LOCAL; |
ccd979bd MF |
1326 | break; |
1327 | case Opt_hb_none: | |
2c442719 SM |
1328 | mopt->mount_opt |= OCFS2_MOUNT_HB_NONE; |
1329 | break; | |
1330 | case Opt_hb_global: | |
1331 | mopt->mount_opt |= OCFS2_MOUNT_HB_GLOBAL; | |
ccd979bd MF |
1332 | break; |
1333 | case Opt_barrier: | |
1334 | if (match_int(&args[0], &option)) { | |
1335 | status = 0; | |
1336 | goto bail; | |
1337 | } | |
1338 | if (option) | |
c0123ade | 1339 | mopt->mount_opt |= OCFS2_MOUNT_BARRIER; |
ccd979bd | 1340 | else |
c0123ade | 1341 | mopt->mount_opt &= ~OCFS2_MOUNT_BARRIER; |
ccd979bd MF |
1342 | break; |
1343 | case Opt_intr: | |
c0123ade | 1344 | mopt->mount_opt &= ~OCFS2_MOUNT_NOINTR; |
ccd979bd MF |
1345 | break; |
1346 | case Opt_nointr: | |
c0123ade | 1347 | mopt->mount_opt |= OCFS2_MOUNT_NOINTR; |
ccd979bd MF |
1348 | break; |
1349 | case Opt_err_panic: | |
c0123ade | 1350 | mopt->mount_opt |= OCFS2_MOUNT_ERRORS_PANIC; |
ccd979bd MF |
1351 | break; |
1352 | case Opt_err_ro: | |
c0123ade | 1353 | mopt->mount_opt &= ~OCFS2_MOUNT_ERRORS_PANIC; |
ccd979bd MF |
1354 | break; |
1355 | case Opt_data_ordered: | |
c0123ade | 1356 | mopt->mount_opt &= ~OCFS2_MOUNT_DATA_WRITEBACK; |
ccd979bd MF |
1357 | break; |
1358 | case Opt_data_writeback: | |
c0123ade | 1359 | mopt->mount_opt |= OCFS2_MOUNT_DATA_WRITEBACK; |
ccd979bd | 1360 | break; |
cf1d6c76 TY |
1361 | case Opt_user_xattr: |
1362 | mopt->mount_opt &= ~OCFS2_MOUNT_NOUSERXATTR; | |
1363 | break; | |
1364 | case Opt_nouser_xattr: | |
1365 | mopt->mount_opt |= OCFS2_MOUNT_NOUSERXATTR; | |
1366 | break; | |
7f1a37e3 TY |
1367 | case Opt_atime_quantum: |
1368 | if (match_int(&args[0], &option)) { | |
1369 | status = 0; | |
1370 | goto bail; | |
1371 | } | |
1372 | if (option >= 0) | |
c0123ade | 1373 | mopt->atime_quantum = option; |
7f1a37e3 | 1374 | break; |
baf4661a SM |
1375 | case Opt_slot: |
1376 | option = 0; | |
1377 | if (match_int(&args[0], &option)) { | |
1378 | status = 0; | |
1379 | goto bail; | |
1380 | } | |
1381 | if (option) | |
c0123ade | 1382 | mopt->slot = (s16)option; |
baf4661a | 1383 | break; |
d147b3d6 MF |
1384 | case Opt_commit: |
1385 | option = 0; | |
1386 | if (match_int(&args[0], &option)) { | |
1387 | status = 0; | |
1388 | goto bail; | |
1389 | } | |
1390 | if (option < 0) | |
1391 | return 0; | |
1392 | if (option == 0) | |
2b4e30fb | 1393 | option = JBD2_DEFAULT_MAX_COMMIT_AGE; |
d147b3d6 MF |
1394 | mopt->commit_interval = HZ * option; |
1395 | break; | |
2fbe8d1e SM |
1396 | case Opt_localalloc: |
1397 | option = 0; | |
1398 | if (match_int(&args[0], &option)) { | |
1399 | status = 0; | |
1400 | goto bail; | |
1401 | } | |
73c8a800 | 1402 | if (option >= 0) |
2fbe8d1e SM |
1403 | mopt->localalloc_opt = option; |
1404 | break; | |
53fc622b MF |
1405 | case Opt_localflocks: |
1406 | /* | |
1407 | * Changing this during remount could race | |
1408 | * flock() requests, or "unbalance" existing | |
1409 | * ones (e.g., a lock is taken in one mode but | |
1410 | * dropped in the other). If users care enough | |
1411 | * to flip locking modes during remount, we | |
1412 | * could add a "local" flag to individual | |
1413 | * flock structures for proper tracking of | |
1414 | * state. | |
1415 | */ | |
1416 | if (!is_remount) | |
1417 | mopt->mount_opt |= OCFS2_MOUNT_LOCALFLOCKS; | |
1418 | break; | |
b61817e1 JB |
1419 | case Opt_stack: |
1420 | /* Check both that the option we were passed | |
1421 | * is of the right length and that it is a proper | |
1422 | * string of the right length. | |
1423 | */ | |
1424 | if (((args[0].to - args[0].from) != | |
1425 | OCFS2_STACK_LABEL_LEN) || | |
1426 | (strnlen(args[0].from, | |
1427 | OCFS2_STACK_LABEL_LEN) != | |
1428 | OCFS2_STACK_LABEL_LEN)) { | |
1429 | mlog(ML_ERROR, | |
1430 | "Invalid cluster_stack option\n"); | |
1431 | status = 0; | |
1432 | goto bail; | |
1433 | } | |
1434 | memcpy(mopt->cluster_stack, args[0].from, | |
1435 | OCFS2_STACK_LABEL_LEN); | |
1436 | mopt->cluster_stack[OCFS2_STACK_LABEL_LEN] = '\0'; | |
52c303c5 MF |
1437 | /* |
1438 | * Open code the memcmp here as we don't have | |
1439 | * an osb to pass to | |
1440 | * ocfs2_userspace_stack(). | |
1441 | */ | |
1442 | if (memcmp(mopt->cluster_stack, | |
1443 | OCFS2_CLASSIC_CLUSTER_STACK, | |
1444 | OCFS2_STACK_LABEL_LEN)) | |
1445 | user_stack = 1; | |
b61817e1 | 1446 | break; |
12462f1d JB |
1447 | case Opt_inode64: |
1448 | mopt->mount_opt |= OCFS2_MOUNT_INODE64; | |
1449 | break; | |
19ece546 | 1450 | case Opt_usrquota: |
19ece546 JK |
1451 | mopt->mount_opt |= OCFS2_MOUNT_USRQUOTA; |
1452 | break; | |
1453 | case Opt_grpquota: | |
19ece546 JK |
1454 | mopt->mount_opt |= OCFS2_MOUNT_GRPQUOTA; |
1455 | break; | |
7bdb0d18 TY |
1456 | case Opt_coherency_buffered: |
1457 | mopt->mount_opt |= OCFS2_MOUNT_COHERENCY_BUFFERED; | |
1458 | break; | |
1459 | case Opt_coherency_full: | |
1460 | mopt->mount_opt &= ~OCFS2_MOUNT_COHERENCY_BUFFERED; | |
1461 | break; | |
a68979b8 TY |
1462 | case Opt_acl: |
1463 | mopt->mount_opt |= OCFS2_MOUNT_POSIX_ACL; | |
5297aad8 | 1464 | mopt->mount_opt &= ~OCFS2_MOUNT_NO_POSIX_ACL; |
a68979b8 TY |
1465 | break; |
1466 | case Opt_noacl: | |
5297aad8 | 1467 | mopt->mount_opt |= OCFS2_MOUNT_NO_POSIX_ACL; |
a68979b8 TY |
1468 | mopt->mount_opt &= ~OCFS2_MOUNT_POSIX_ACL; |
1469 | break; | |
d02f00cc MF |
1470 | case Opt_resv_level: |
1471 | if (is_remount) | |
1472 | break; | |
1473 | if (match_int(&args[0], &option)) { | |
1474 | status = 0; | |
1475 | goto bail; | |
1476 | } | |
1477 | if (option >= OCFS2_MIN_RESV_LEVEL && | |
1478 | option < OCFS2_MAX_RESV_LEVEL) | |
1479 | mopt->resv_level = option; | |
1480 | break; | |
83f92318 MF |
1481 | case Opt_dir_resv_level: |
1482 | if (is_remount) | |
1483 | break; | |
1484 | if (match_int(&args[0], &option)) { | |
1485 | status = 0; | |
1486 | goto bail; | |
1487 | } | |
1488 | if (option >= OCFS2_MIN_RESV_LEVEL && | |
1489 | option < OCFS2_MAX_RESV_LEVEL) | |
1490 | mopt->dir_resv_level = option; | |
1491 | break; | |
ccd979bd MF |
1492 | default: |
1493 | mlog(ML_ERROR, | |
1494 | "Unrecognized mount option \"%s\" " | |
1495 | "or missing value\n", p); | |
1496 | status = 0; | |
1497 | goto bail; | |
1498 | } | |
1499 | } | |
1500 | ||
52c303c5 MF |
1501 | if (user_stack == 0) { |
1502 | /* Ensure only one heartbeat mode */ | |
1503 | tmp = mopt->mount_opt & (OCFS2_MOUNT_HB_LOCAL | | |
1504 | OCFS2_MOUNT_HB_GLOBAL | | |
1505 | OCFS2_MOUNT_HB_NONE); | |
1506 | if (hweight32(tmp) != 1) { | |
1507 | mlog(ML_ERROR, "Invalid heartbeat mount options\n"); | |
1508 | status = 0; | |
1509 | goto bail; | |
1510 | } | |
2c442719 SM |
1511 | } |
1512 | ||
ccd979bd MF |
1513 | status = 1; |
1514 | ||
1515 | bail: | |
ccd979bd MF |
1516 | return status; |
1517 | } | |
1518 | ||
34c80b1d | 1519 | static int ocfs2_show_options(struct seq_file *s, struct dentry *root) |
d550071c | 1520 | { |
34c80b1d | 1521 | struct ocfs2_super *osb = OCFS2_SB(root->d_sb); |
d550071c | 1522 | unsigned long opts = osb->s_mount_opt; |
ebcee4b5 | 1523 | unsigned int local_alloc_megs; |
d550071c | 1524 | |
2c442719 SM |
1525 | if (opts & (OCFS2_MOUNT_HB_LOCAL | OCFS2_MOUNT_HB_GLOBAL)) { |
1526 | seq_printf(s, ",_netdev"); | |
1527 | if (opts & OCFS2_MOUNT_HB_LOCAL) | |
1528 | seq_printf(s, ",%s", OCFS2_HB_LOCAL); | |
1529 | else | |
1530 | seq_printf(s, ",%s", OCFS2_HB_GLOBAL); | |
1531 | } else | |
1532 | seq_printf(s, ",%s", OCFS2_HB_NONE); | |
d550071c SM |
1533 | |
1534 | if (opts & OCFS2_MOUNT_NOINTR) | |
1535 | seq_printf(s, ",nointr"); | |
1536 | ||
1537 | if (opts & OCFS2_MOUNT_DATA_WRITEBACK) | |
1538 | seq_printf(s, ",data=writeback"); | |
1539 | else | |
1540 | seq_printf(s, ",data=ordered"); | |
1541 | ||
1542 | if (opts & OCFS2_MOUNT_BARRIER) | |
1543 | seq_printf(s, ",barrier=1"); | |
1544 | ||
1545 | if (opts & OCFS2_MOUNT_ERRORS_PANIC) | |
1546 | seq_printf(s, ",errors=panic"); | |
1547 | else | |
1548 | seq_printf(s, ",errors=remount-ro"); | |
1549 | ||
1550 | if (osb->preferred_slot != OCFS2_INVALID_SLOT) | |
1551 | seq_printf(s, ",preferred_slot=%d", osb->preferred_slot); | |
1552 | ||
34c80b1d | 1553 | seq_printf(s, ",atime_quantum=%u", osb->s_atime_quantum); |
d550071c | 1554 | |
d147b3d6 MF |
1555 | if (osb->osb_commit_interval) |
1556 | seq_printf(s, ",commit=%u", | |
1557 | (unsigned) (osb->osb_commit_interval / HZ)); | |
1558 | ||
ebcee4b5 | 1559 | local_alloc_megs = osb->local_alloc_bits >> (20 - osb->s_clustersize_bits); |
6b82021b | 1560 | if (local_alloc_megs != ocfs2_la_default_mb(osb)) |
ebcee4b5 | 1561 | seq_printf(s, ",localalloc=%d", local_alloc_megs); |
2fbe8d1e | 1562 | |
53fc622b MF |
1563 | if (opts & OCFS2_MOUNT_LOCALFLOCKS) |
1564 | seq_printf(s, ",localflocks,"); | |
1565 | ||
b61817e1 JB |
1566 | if (osb->osb_cluster_stack[0]) |
1567 | seq_printf(s, ",cluster_stack=%.*s", OCFS2_STACK_LABEL_LEN, | |
1568 | osb->osb_cluster_stack); | |
19ece546 JK |
1569 | if (opts & OCFS2_MOUNT_USRQUOTA) |
1570 | seq_printf(s, ",usrquota"); | |
1571 | if (opts & OCFS2_MOUNT_GRPQUOTA) | |
1572 | seq_printf(s, ",grpquota"); | |
b61817e1 | 1573 | |
7bdb0d18 TY |
1574 | if (opts & OCFS2_MOUNT_COHERENCY_BUFFERED) |
1575 | seq_printf(s, ",coherency=buffered"); | |
1576 | else | |
1577 | seq_printf(s, ",coherency=full"); | |
1578 | ||
b0f73cfc SM |
1579 | if (opts & OCFS2_MOUNT_NOUSERXATTR) |
1580 | seq_printf(s, ",nouser_xattr"); | |
1581 | else | |
1582 | seq_printf(s, ",user_xattr"); | |
1583 | ||
12462f1d JB |
1584 | if (opts & OCFS2_MOUNT_INODE64) |
1585 | seq_printf(s, ",inode64"); | |
1586 | ||
a68979b8 TY |
1587 | if (opts & OCFS2_MOUNT_POSIX_ACL) |
1588 | seq_printf(s, ",acl"); | |
1589 | else | |
1590 | seq_printf(s, ",noacl"); | |
a68979b8 | 1591 | |
d02f00cc MF |
1592 | if (osb->osb_resv_level != OCFS2_DEFAULT_RESV_LEVEL) |
1593 | seq_printf(s, ",resv_level=%d", osb->osb_resv_level); | |
1594 | ||
83f92318 MF |
1595 | if (osb->osb_dir_resv_level != osb->osb_resv_level) |
1596 | seq_printf(s, ",dir_resv_level=%d", osb->osb_resv_level); | |
1597 | ||
d550071c SM |
1598 | return 0; |
1599 | } | |
1600 | ||
ccd979bd MF |
1601 | static int __init ocfs2_init(void) |
1602 | { | |
c18ceab0 | 1603 | int status; |
a11f7e63 | 1604 | |
ccd979bd | 1605 | status = init_ocfs2_uptodate_cache(); |
342827d7 AV |
1606 | if (status < 0) |
1607 | goto out1; | |
ccd979bd MF |
1608 | |
1609 | status = ocfs2_initialize_mem_caches(); | |
342827d7 AV |
1610 | if (status < 0) |
1611 | goto out2; | |
ccd979bd MF |
1612 | |
1613 | ocfs2_wq = create_singlethread_workqueue("ocfs2_wq"); | |
1614 | if (!ocfs2_wq) { | |
1615 | status = -ENOMEM; | |
342827d7 | 1616 | goto out3; |
ccd979bd MF |
1617 | } |
1618 | ||
ccd979bd MF |
1619 | ocfs2_debugfs_root = debugfs_create_dir("ocfs2", NULL); |
1620 | if (!ocfs2_debugfs_root) { | |
1621 | status = -EFAULT; | |
1622 | mlog(ML_ERROR, "Unable to create ocfs2 debugfs root.\n"); | |
1623 | } | |
1624 | ||
63e0c48a JB |
1625 | ocfs2_set_locking_protocol(); |
1626 | ||
9e33d69f | 1627 | status = register_quota_format(&ocfs2_quota_format); |
342827d7 AV |
1628 | if (status < 0) |
1629 | goto out4; | |
1630 | status = register_filesystem(&ocfs2_fs_type); | |
1631 | if (!status) | |
1632 | return 0; | |
ccd979bd | 1633 | |
342827d7 AV |
1634 | unregister_quota_format(&ocfs2_quota_format); |
1635 | out4: | |
1636 | destroy_workqueue(ocfs2_wq); | |
1637 | debugfs_remove(ocfs2_debugfs_root); | |
1638 | out3: | |
1639 | ocfs2_free_mem_caches(); | |
1640 | out2: | |
1641 | exit_ocfs2_uptodate_cache(); | |
1642 | out1: | |
1643 | mlog_errno(status); | |
1644 | return status; | |
ccd979bd MF |
1645 | } |
1646 | ||
1647 | static void __exit ocfs2_exit(void) | |
1648 | { | |
ccd979bd MF |
1649 | if (ocfs2_wq) { |
1650 | flush_workqueue(ocfs2_wq); | |
1651 | destroy_workqueue(ocfs2_wq); | |
1652 | } | |
1653 | ||
9e33d69f JK |
1654 | unregister_quota_format(&ocfs2_quota_format); |
1655 | ||
ccd979bd MF |
1656 | debugfs_remove(ocfs2_debugfs_root); |
1657 | ||
1658 | ocfs2_free_mem_caches(); | |
1659 | ||
1660 | unregister_filesystem(&ocfs2_fs_type); | |
1661 | ||
ccd979bd | 1662 | exit_ocfs2_uptodate_cache(); |
ccd979bd MF |
1663 | } |
1664 | ||
1665 | static void ocfs2_put_super(struct super_block *sb) | |
1666 | { | |
32a42d39 | 1667 | trace_ocfs2_put_super(sb); |
ccd979bd MF |
1668 | |
1669 | ocfs2_sync_blockdev(sb); | |
1670 | ocfs2_dismount_volume(sb, 0); | |
ccd979bd MF |
1671 | } |
1672 | ||
726c3342 | 1673 | static int ocfs2_statfs(struct dentry *dentry, struct kstatfs *buf) |
ccd979bd MF |
1674 | { |
1675 | struct ocfs2_super *osb; | |
1676 | u32 numbits, freebits; | |
1677 | int status; | |
1678 | struct ocfs2_dinode *bm_lock; | |
1679 | struct buffer_head *bh = NULL; | |
1680 | struct inode *inode = NULL; | |
1681 | ||
32a42d39 | 1682 | trace_ocfs2_statfs(dentry->d_sb, buf); |
ccd979bd | 1683 | |
726c3342 | 1684 | osb = OCFS2_SB(dentry->d_sb); |
ccd979bd MF |
1685 | |
1686 | inode = ocfs2_get_system_file_inode(osb, | |
1687 | GLOBAL_BITMAP_SYSTEM_INODE, | |
1688 | OCFS2_INVALID_SLOT); | |
1689 | if (!inode) { | |
1690 | mlog(ML_ERROR, "failed to get bitmap inode\n"); | |
1691 | status = -EIO; | |
1692 | goto bail; | |
1693 | } | |
1694 | ||
e63aecb6 | 1695 | status = ocfs2_inode_lock(inode, &bh, 0); |
ccd979bd MF |
1696 | if (status < 0) { |
1697 | mlog_errno(status); | |
1698 | goto bail; | |
1699 | } | |
1700 | ||
1701 | bm_lock = (struct ocfs2_dinode *) bh->b_data; | |
1702 | ||
1703 | numbits = le32_to_cpu(bm_lock->id1.bitmap1.i_total); | |
1704 | freebits = numbits - le32_to_cpu(bm_lock->id1.bitmap1.i_used); | |
1705 | ||
1706 | buf->f_type = OCFS2_SUPER_MAGIC; | |
726c3342 | 1707 | buf->f_bsize = dentry->d_sb->s_blocksize; |
ccd979bd MF |
1708 | buf->f_namelen = OCFS2_MAX_FILENAME_LEN; |
1709 | buf->f_blocks = ((sector_t) numbits) * | |
1710 | (osb->s_clustersize >> osb->sb->s_blocksize_bits); | |
1711 | buf->f_bfree = ((sector_t) freebits) * | |
1712 | (osb->s_clustersize >> osb->sb->s_blocksize_bits); | |
1713 | buf->f_bavail = buf->f_bfree; | |
1714 | buf->f_files = numbits; | |
1715 | buf->f_ffree = freebits; | |
837711f8 CL |
1716 | buf->f_fsid.val[0] = crc32_le(0, osb->uuid_str, OCFS2_VOL_UUID_LEN) |
1717 | & 0xFFFFFFFFUL; | |
1718 | buf->f_fsid.val[1] = crc32_le(0, osb->uuid_str + OCFS2_VOL_UUID_LEN, | |
1719 | OCFS2_VOL_UUID_LEN) & 0xFFFFFFFFUL; | |
ccd979bd MF |
1720 | |
1721 | brelse(bh); | |
1722 | ||
e63aecb6 | 1723 | ocfs2_inode_unlock(inode, 0); |
ccd979bd MF |
1724 | status = 0; |
1725 | bail: | |
1726 | if (inode) | |
1727 | iput(inode); | |
1728 | ||
c1e8d35e TM |
1729 | if (status) |
1730 | mlog_errno(status); | |
ccd979bd MF |
1731 | |
1732 | return status; | |
1733 | } | |
1734 | ||
51cc5068 | 1735 | static void ocfs2_inode_init_once(void *data) |
ccd979bd MF |
1736 | { |
1737 | struct ocfs2_inode_info *oi = data; | |
1738 | ||
a35afb83 CL |
1739 | oi->ip_flags = 0; |
1740 | oi->ip_open_count = 0; | |
1741 | spin_lock_init(&oi->ip_lock); | |
1742 | ocfs2_extent_map_init(&oi->vfs_inode); | |
1743 | INIT_LIST_HEAD(&oi->ip_io_markers); | |
a35afb83 | 1744 | oi->ip_dir_start_lookup = 0; |
c18ceab0 | 1745 | mutex_init(&oi->ip_unaligned_aio); |
a35afb83 | 1746 | init_rwsem(&oi->ip_alloc_sem); |
cf1d6c76 | 1747 | init_rwsem(&oi->ip_xattr_sem); |
a35afb83 | 1748 | mutex_init(&oi->ip_io_mutex); |
ccd979bd | 1749 | |
a35afb83 CL |
1750 | oi->ip_blkno = 0ULL; |
1751 | oi->ip_clusters = 0; | |
ccd979bd | 1752 | |
4fe370af MF |
1753 | ocfs2_resv_init_once(&oi->ip_la_data_resv); |
1754 | ||
a35afb83 | 1755 | ocfs2_lock_res_init_once(&oi->ip_rw_lockres); |
e63aecb6 | 1756 | ocfs2_lock_res_init_once(&oi->ip_inode_lockres); |
a35afb83 | 1757 | ocfs2_lock_res_init_once(&oi->ip_open_lockres); |
ccd979bd | 1758 | |
8cb471e8 | 1759 | ocfs2_metadata_cache_init(INODE_CACHE(&oi->vfs_inode), |
6e5a3d75 | 1760 | &ocfs2_inode_caching_ops); |
ccd979bd | 1761 | |
a35afb83 | 1762 | inode_init_once(&oi->vfs_inode); |
ccd979bd MF |
1763 | } |
1764 | ||
1765 | static int ocfs2_initialize_mem_caches(void) | |
1766 | { | |
1767 | ocfs2_inode_cachep = kmem_cache_create("ocfs2_inode_cache", | |
fffb60f9 PJ |
1768 | sizeof(struct ocfs2_inode_info), |
1769 | 0, | |
1770 | (SLAB_HWCACHE_ALIGN|SLAB_RECLAIM_ACCOUNT| | |
1771 | SLAB_MEM_SPREAD), | |
20c2df83 | 1772 | ocfs2_inode_init_once); |
9e33d69f JK |
1773 | ocfs2_dquot_cachep = kmem_cache_create("ocfs2_dquot_cache", |
1774 | sizeof(struct ocfs2_dquot), | |
1775 | 0, | |
1776 | (SLAB_HWCACHE_ALIGN|SLAB_RECLAIM_ACCOUNT| | |
1777 | SLAB_MEM_SPREAD), | |
1778 | NULL); | |
1779 | ocfs2_qf_chunk_cachep = kmem_cache_create("ocfs2_qf_chunk_cache", | |
1780 | sizeof(struct ocfs2_quota_chunk), | |
1781 | 0, | |
1782 | (SLAB_RECLAIM_ACCOUNT|SLAB_MEM_SPREAD), | |
1783 | NULL); | |
1784 | if (!ocfs2_inode_cachep || !ocfs2_dquot_cachep || | |
1785 | !ocfs2_qf_chunk_cachep) { | |
1786 | if (ocfs2_inode_cachep) | |
1787 | kmem_cache_destroy(ocfs2_inode_cachep); | |
1788 | if (ocfs2_dquot_cachep) | |
1789 | kmem_cache_destroy(ocfs2_dquot_cachep); | |
1790 | if (ocfs2_qf_chunk_cachep) | |
1791 | kmem_cache_destroy(ocfs2_qf_chunk_cachep); | |
ccd979bd | 1792 | return -ENOMEM; |
9e33d69f | 1793 | } |
ccd979bd | 1794 | |
ccd979bd MF |
1795 | return 0; |
1796 | } | |
1797 | ||
1798 | static void ocfs2_free_mem_caches(void) | |
1799 | { | |
8c0a8537 KS |
1800 | /* |
1801 | * Make sure all delayed rcu free inodes are flushed before we | |
1802 | * destroy cache. | |
1803 | */ | |
1804 | rcu_barrier(); | |
ccd979bd MF |
1805 | if (ocfs2_inode_cachep) |
1806 | kmem_cache_destroy(ocfs2_inode_cachep); | |
ccd979bd | 1807 | ocfs2_inode_cachep = NULL; |
9e33d69f JK |
1808 | |
1809 | if (ocfs2_dquot_cachep) | |
1810 | kmem_cache_destroy(ocfs2_dquot_cachep); | |
1811 | ocfs2_dquot_cachep = NULL; | |
1812 | ||
1813 | if (ocfs2_qf_chunk_cachep) | |
1814 | kmem_cache_destroy(ocfs2_qf_chunk_cachep); | |
1815 | ocfs2_qf_chunk_cachep = NULL; | |
ccd979bd MF |
1816 | } |
1817 | ||
1818 | static int ocfs2_get_sector(struct super_block *sb, | |
1819 | struct buffer_head **bh, | |
1820 | int block, | |
1821 | int sect_size) | |
1822 | { | |
1823 | if (!sb_set_blocksize(sb, sect_size)) { | |
1824 | mlog(ML_ERROR, "unable to set blocksize\n"); | |
1825 | return -EIO; | |
1826 | } | |
1827 | ||
1828 | *bh = sb_getblk(sb, block); | |
1829 | if (!*bh) { | |
7391a294 RX |
1830 | mlog_errno(-ENOMEM); |
1831 | return -ENOMEM; | |
ccd979bd MF |
1832 | } |
1833 | lock_buffer(*bh); | |
1834 | if (!buffer_dirty(*bh)) | |
1835 | clear_buffer_uptodate(*bh); | |
1836 | unlock_buffer(*bh); | |
1837 | ll_rw_block(READ, 1, bh); | |
1838 | wait_on_buffer(*bh); | |
28d57d43 | 1839 | if (!buffer_uptodate(*bh)) { |
1840 | mlog_errno(-EIO); | |
1841 | brelse(*bh); | |
1842 | *bh = NULL; | |
1843 | return -EIO; | |
1844 | } | |
1845 | ||
ccd979bd MF |
1846 | return 0; |
1847 | } | |
1848 | ||
ccd979bd MF |
1849 | static int ocfs2_mount_volume(struct super_block *sb) |
1850 | { | |
1851 | int status = 0; | |
1852 | int unlock_super = 0; | |
1853 | struct ocfs2_super *osb = OCFS2_SB(sb); | |
1854 | ||
ccd979bd MF |
1855 | if (ocfs2_is_hard_readonly(osb)) |
1856 | goto leave; | |
1857 | ||
ccd979bd MF |
1858 | status = ocfs2_dlm_init(osb); |
1859 | if (status < 0) { | |
1860 | mlog_errno(status); | |
1861 | goto leave; | |
1862 | } | |
1863 | ||
ccd979bd MF |
1864 | status = ocfs2_super_lock(osb, 1); |
1865 | if (status < 0) { | |
1866 | mlog_errno(status); | |
1867 | goto leave; | |
1868 | } | |
1869 | unlock_super = 1; | |
1870 | ||
1871 | /* This will load up the node map and add ourselves to it. */ | |
1872 | status = ocfs2_find_slot(osb); | |
1873 | if (status < 0) { | |
1874 | mlog_errno(status); | |
1875 | goto leave; | |
1876 | } | |
1877 | ||
ccd979bd MF |
1878 | /* load all node-local system inodes */ |
1879 | status = ocfs2_init_local_system_inodes(osb); | |
1880 | if (status < 0) { | |
1881 | mlog_errno(status); | |
1882 | goto leave; | |
1883 | } | |
1884 | ||
1885 | status = ocfs2_check_volume(osb); | |
1886 | if (status < 0) { | |
1887 | mlog_errno(status); | |
1888 | goto leave; | |
1889 | } | |
1890 | ||
1891 | status = ocfs2_truncate_log_init(osb); | |
06c59bb8 | 1892 | if (status < 0) |
ccd979bd | 1893 | mlog_errno(status); |
c271c5c2 | 1894 | |
ccd979bd MF |
1895 | leave: |
1896 | if (unlock_super) | |
1897 | ocfs2_super_unlock(osb, 1); | |
1898 | ||
ccd979bd MF |
1899 | return status; |
1900 | } | |
1901 | ||
ccd979bd MF |
1902 | static void ocfs2_dismount_volume(struct super_block *sb, int mnt_err) |
1903 | { | |
286eaa95 | 1904 | int tmp, hangup_needed = 0; |
ccd979bd | 1905 | struct ocfs2_super *osb = NULL; |
99d7a882 | 1906 | char nodestr[12]; |
ccd979bd | 1907 | |
32a42d39 | 1908 | trace_ocfs2_dismount_volume(sb); |
ccd979bd MF |
1909 | |
1910 | BUG_ON(!sb); | |
1911 | osb = OCFS2_SB(sb); | |
1912 | BUG_ON(!osb); | |
1913 | ||
50397507 SM |
1914 | debugfs_remove(osb->osb_ctxt); |
1915 | ||
692684e1 SM |
1916 | /* Orphan scan should be stopped as early as possible */ |
1917 | ocfs2_orphan_scan_stop(osb); | |
1918 | ||
19ece546 JK |
1919 | ocfs2_disable_quotas(osb); |
1920 | ||
e3a767b6 JK |
1921 | /* All dquots should be freed by now */ |
1922 | WARN_ON(!llist_empty(&osb->dquot_drop_list)); | |
1923 | /* Wait for worker to be done with the work structure in osb */ | |
1924 | cancel_work_sync(&osb->dquot_drop_work); | |
1925 | ||
ccd979bd MF |
1926 | ocfs2_shutdown_local_alloc(osb); |
1927 | ||
553abd04 JB |
1928 | /* This will disable recovery and flush any recovery work. */ |
1929 | ocfs2_recovery_exit(osb); | |
ccd979bd | 1930 | |
75f82eaa YJ |
1931 | /* |
1932 | * During dismount, when it recovers another node it will call | |
1933 | * ocfs2_recover_orphans and queue delayed work osb_truncate_log_wq. | |
1934 | */ | |
1935 | ocfs2_truncate_log_shutdown(osb); | |
1936 | ||
ccd979bd MF |
1937 | ocfs2_journal_shutdown(osb); |
1938 | ||
1939 | ocfs2_sync_blockdev(sb); | |
1940 | ||
374a263e TM |
1941 | ocfs2_purge_refcount_trees(osb); |
1942 | ||
4670c46d JB |
1943 | /* No cluster connection means we've failed during mount, so skip |
1944 | * all the steps which depended on that to complete. */ | |
1945 | if (osb->cconn) { | |
ccd979bd MF |
1946 | tmp = ocfs2_super_lock(osb, 1); |
1947 | if (tmp < 0) { | |
1948 | mlog_errno(tmp); | |
1949 | return; | |
1950 | } | |
19b613d4 | 1951 | } |
ccd979bd | 1952 | |
19b613d4 MF |
1953 | if (osb->slot_num != OCFS2_INVALID_SLOT) |
1954 | ocfs2_put_slot(osb); | |
ccd979bd | 1955 | |
4670c46d | 1956 | if (osb->cconn) |
ccd979bd | 1957 | ocfs2_super_unlock(osb, 1); |
ccd979bd MF |
1958 | |
1959 | ocfs2_release_system_inodes(osb); | |
1960 | ||
6953b4c0 | 1961 | /* |
6953b4c0 JB |
1962 | * If we're dismounting due to mount error, mount.ocfs2 will clean |
1963 | * up heartbeat. If we're a local mount, there is no heartbeat. | |
1964 | * If we failed before we got a uuid_str yet, we can't stop | |
1965 | * heartbeat. Otherwise, do it. | |
1966 | */ | |
03efed8a TY |
1967 | if (!mnt_err && !ocfs2_mount_local(osb) && osb->uuid_str && |
1968 | !ocfs2_is_hard_readonly(osb)) | |
286eaa95 JB |
1969 | hangup_needed = 1; |
1970 | ||
1971 | if (osb->cconn) | |
1972 | ocfs2_dlm_shutdown(osb, hangup_needed); | |
1973 | ||
73be192b | 1974 | ocfs2_blockcheck_stats_debugfs_remove(&osb->osb_ecc_stats); |
286eaa95 JB |
1975 | debugfs_remove(osb->osb_debug_root); |
1976 | ||
1977 | if (hangup_needed) | |
6953b4c0 | 1978 | ocfs2_cluster_hangup(osb->uuid_str, strlen(osb->uuid_str)); |
ccd979bd MF |
1979 | |
1980 | atomic_set(&osb->vol_state, VOLUME_DISMOUNTED); | |
1981 | ||
c271c5c2 SM |
1982 | if (ocfs2_mount_local(osb)) |
1983 | snprintf(nodestr, sizeof(nodestr), "local"); | |
1984 | else | |
19fdb624 | 1985 | snprintf(nodestr, sizeof(nodestr), "%u", osb->node_num); |
c271c5c2 SM |
1986 | |
1987 | printk(KERN_INFO "ocfs2: Unmounting device (%s) on (node %s)\n", | |
1988 | osb->dev_str, nodestr); | |
ccd979bd MF |
1989 | |
1990 | ocfs2_delete_osb(osb); | |
1991 | kfree(osb); | |
1992 | sb->s_dev = 0; | |
1993 | sb->s_fs_info = NULL; | |
1994 | } | |
1995 | ||
1996 | static int ocfs2_setup_osb_uuid(struct ocfs2_super *osb, const unsigned char *uuid, | |
1997 | unsigned uuid_bytes) | |
1998 | { | |
1999 | int i, ret; | |
2000 | char *ptr; | |
2001 | ||
2002 | BUG_ON(uuid_bytes != OCFS2_VOL_UUID_LEN); | |
2003 | ||
cd861280 | 2004 | osb->uuid_str = kzalloc(OCFS2_VOL_UUID_LEN * 2 + 1, GFP_KERNEL); |
ccd979bd MF |
2005 | if (osb->uuid_str == NULL) |
2006 | return -ENOMEM; | |
2007 | ||
ccd979bd MF |
2008 | for (i = 0, ptr = osb->uuid_str; i < OCFS2_VOL_UUID_LEN; i++) { |
2009 | /* print with null */ | |
2010 | ret = snprintf(ptr, 3, "%02X", uuid[i]); | |
2011 | if (ret != 2) /* drop super cleans up */ | |
2012 | return -EINVAL; | |
2013 | /* then only advance past the last char */ | |
2014 | ptr += 2; | |
2015 | } | |
2016 | ||
2017 | return 0; | |
2018 | } | |
2019 | ||
3bdb8efd PL |
2020 | /* Make sure entire volume is addressable by our journal. Requires |
2021 | osb_clusters_at_boot to be valid and for the journal to have been | |
2022 | initialized by ocfs2_journal_init(). */ | |
2023 | static int ocfs2_journal_addressable(struct ocfs2_super *osb) | |
2024 | { | |
2025 | int status = 0; | |
2026 | u64 max_block = | |
2027 | ocfs2_clusters_to_blocks(osb->sb, | |
2028 | osb->osb_clusters_at_boot) - 1; | |
2029 | ||
2030 | /* 32-bit block number is always OK. */ | |
2031 | if (max_block <= (u32)~0ULL) | |
2032 | goto out; | |
2033 | ||
2034 | /* Volume is "huge", so see if our journal is new enough to | |
2035 | support it. */ | |
2036 | if (!(OCFS2_HAS_COMPAT_FEATURE(osb->sb, | |
2037 | OCFS2_FEATURE_COMPAT_JBD2_SB) && | |
2038 | jbd2_journal_check_used_features(osb->journal->j_journal, 0, 0, | |
2039 | JBD2_FEATURE_INCOMPAT_64BIT))) { | |
2040 | mlog(ML_ERROR, "The journal cannot address the entire volume. " | |
2041 | "Enable the 'block64' journal option with tunefs.ocfs2"); | |
2042 | status = -EFBIG; | |
2043 | goto out; | |
2044 | } | |
2045 | ||
2046 | out: | |
2047 | return status; | |
2048 | } | |
2049 | ||
ccd979bd MF |
2050 | static int ocfs2_initialize_super(struct super_block *sb, |
2051 | struct buffer_head *bh, | |
73be192b JB |
2052 | int sector_size, |
2053 | struct ocfs2_blockcheck_stats *stats) | |
ccd979bd | 2054 | { |
bddb8eb3 | 2055 | int status; |
5a254031 MF |
2056 | int i, cbits, bbits; |
2057 | struct ocfs2_dinode *di = (struct ocfs2_dinode *)bh->b_data; | |
ccd979bd | 2058 | struct inode *inode = NULL; |
ccd979bd | 2059 | struct ocfs2_journal *journal; |
ccd979bd | 2060 | struct ocfs2_super *osb; |
3bdb8efd | 2061 | u64 total_blocks; |
ccd979bd | 2062 | |
cd861280 | 2063 | osb = kzalloc(sizeof(struct ocfs2_super), GFP_KERNEL); |
ccd979bd MF |
2064 | if (!osb) { |
2065 | status = -ENOMEM; | |
2066 | mlog_errno(status); | |
2067 | goto bail; | |
2068 | } | |
2069 | ||
2070 | sb->s_fs_info = osb; | |
2071 | sb->s_op = &ocfs2_sops; | |
ba87167c | 2072 | sb->s_d_op = &ocfs2_dentry_ops; |
ccd979bd | 2073 | sb->s_export_op = &ocfs2_export_ops; |
19ece546 JK |
2074 | sb->s_qcop = &ocfs2_quotactl_ops; |
2075 | sb->dq_op = &ocfs2_quota_operations; | |
cf1d6c76 | 2076 | sb->s_xattr = ocfs2_xattr_handlers; |
e0dceaf0 | 2077 | sb->s_time_gran = 1; |
ccd979bd MF |
2078 | sb->s_flags |= MS_NOATIME; |
2079 | /* this is needed to support O_LARGEFILE */ | |
5a254031 MF |
2080 | cbits = le32_to_cpu(di->id2.i_super.s_clustersize_bits); |
2081 | bbits = le32_to_cpu(di->id2.i_super.s_blocksize_bits); | |
2082 | sb->s_maxbytes = ocfs2_max_file_offset(bbits, cbits); | |
ccd979bd | 2083 | |
9b7895ef MF |
2084 | osb->osb_dx_mask = (1 << (cbits - bbits)) - 1; |
2085 | ||
2086 | for (i = 0; i < 3; i++) | |
2087 | osb->osb_dx_seed[i] = le32_to_cpu(di->id2.i_super.s_dx_seed[i]); | |
2088 | osb->osb_dx_seed[3] = le32_to_cpu(di->id2.i_super.s_uuid_hash); | |
2089 | ||
ccd979bd MF |
2090 | osb->sb = sb; |
2091 | /* Save off for ocfs2_rw_direct */ | |
2092 | osb->s_sectsize_bits = blksize_bits(sector_size); | |
ebdec83b | 2093 | BUG_ON(!osb->s_sectsize_bits); |
ccd979bd | 2094 | |
34d024f8 MF |
2095 | spin_lock_init(&osb->dc_task_lock); |
2096 | init_waitqueue_head(&osb->dc_event); | |
2097 | osb->dc_work_sequence = 0; | |
2098 | osb->dc_wake_sequence = 0; | |
ccd979bd MF |
2099 | INIT_LIST_HEAD(&osb->blocked_lock_list); |
2100 | osb->blocked_lock_count = 0; | |
ccd979bd | 2101 | spin_lock_init(&osb->osb_lock); |
c8b9cf9a | 2102 | spin_lock_init(&osb->osb_xattr_lock); |
b89c5428 | 2103 | ocfs2_init_steal_slots(osb); |
ccd979bd | 2104 | |
43b10a20 | 2105 | mutex_init(&osb->system_file_mutex); |
2106 | ||
ccd979bd MF |
2107 | atomic_set(&osb->alloc_stats.moves, 0); |
2108 | atomic_set(&osb->alloc_stats.local_data, 0); | |
2109 | atomic_set(&osb->alloc_stats.bitmap_data, 0); | |
2110 | atomic_set(&osb->alloc_stats.bg_allocs, 0); | |
2111 | atomic_set(&osb->alloc_stats.bg_extends, 0); | |
2112 | ||
73be192b JB |
2113 | /* Copy the blockcheck stats from the superblock probe */ |
2114 | osb->osb_ecc_stats = *stats; | |
2115 | ||
ccd979bd MF |
2116 | ocfs2_init_node_maps(osb); |
2117 | ||
2118 | snprintf(osb->dev_str, sizeof(osb->dev_str), "%u,%u", | |
2119 | MAJOR(osb->sb->s_dev), MINOR(osb->sb->s_dev)); | |
2120 | ||
75d9bbc7 GR |
2121 | osb->max_slots = le16_to_cpu(di->id2.i_super.s_max_slots); |
2122 | if (osb->max_slots > OCFS2_MAX_SLOTS || osb->max_slots == 0) { | |
2123 | mlog(ML_ERROR, "Invalid number of node slots (%u)\n", | |
2124 | osb->max_slots); | |
2125 | status = -EINVAL; | |
2126 | goto bail; | |
2127 | } | |
75d9bbc7 | 2128 | |
8b712cd5 JM |
2129 | ocfs2_orphan_scan_init(osb); |
2130 | ||
553abd04 JB |
2131 | status = ocfs2_recovery_init(osb); |
2132 | if (status) { | |
2133 | mlog(ML_ERROR, "Unable to initialize recovery state\n"); | |
2134 | mlog_errno(status); | |
2135 | goto bail; | |
2136 | } | |
ccd979bd MF |
2137 | |
2138 | init_waitqueue_head(&osb->checkpoint_event); | |
ccd979bd | 2139 | |
7f1a37e3 TY |
2140 | osb->s_atime_quantum = OCFS2_DEFAULT_ATIME_QUANTUM; |
2141 | ||
ccd979bd MF |
2142 | osb->slot_num = OCFS2_INVALID_SLOT; |
2143 | ||
8154da3d TY |
2144 | osb->s_xattr_inline_size = le16_to_cpu( |
2145 | di->id2.i_super.s_xattr_inline_size); | |
fdd77704 | 2146 | |
ccd979bd MF |
2147 | osb->local_alloc_state = OCFS2_LA_UNUSED; |
2148 | osb->local_alloc_bh = NULL; | |
9c7af40b | 2149 | INIT_DELAYED_WORK(&osb->la_enable_wq, ocfs2_la_enable_worker); |
ccd979bd | 2150 | |
ccd979bd MF |
2151 | init_waitqueue_head(&osb->osb_mount_event); |
2152 | ||
d02f00cc MF |
2153 | status = ocfs2_resmap_init(osb, &osb->osb_la_resmap); |
2154 | if (status) { | |
2155 | mlog_errno(status); | |
2156 | goto bail; | |
2157 | } | |
2158 | ||
ccd979bd MF |
2159 | osb->vol_label = kmalloc(OCFS2_MAX_VOL_LABEL_LEN, GFP_KERNEL); |
2160 | if (!osb->vol_label) { | |
2161 | mlog(ML_ERROR, "unable to alloc vol label\n"); | |
2162 | status = -ENOMEM; | |
2163 | goto bail; | |
2164 | } | |
2165 | ||
539d8264 SM |
2166 | osb->slot_recovery_generations = |
2167 | kcalloc(osb->max_slots, sizeof(*osb->slot_recovery_generations), | |
2168 | GFP_KERNEL); | |
2169 | if (!osb->slot_recovery_generations) { | |
2170 | status = -ENOMEM; | |
2171 | mlog_errno(status); | |
2172 | goto bail; | |
2173 | } | |
2174 | ||
b4df6ed8 MF |
2175 | init_waitqueue_head(&osb->osb_wipe_event); |
2176 | osb->osb_orphan_wipes = kcalloc(osb->max_slots, | |
2177 | sizeof(*osb->osb_orphan_wipes), | |
2178 | GFP_KERNEL); | |
2179 | if (!osb->osb_orphan_wipes) { | |
2180 | status = -ENOMEM; | |
2181 | mlog_errno(status); | |
2182 | goto bail; | |
2183 | } | |
2184 | ||
374a263e TM |
2185 | osb->osb_rf_lock_tree = RB_ROOT; |
2186 | ||
ccd979bd MF |
2187 | osb->s_feature_compat = |
2188 | le32_to_cpu(OCFS2_RAW_SB(di)->s_feature_compat); | |
2189 | osb->s_feature_ro_compat = | |
2190 | le32_to_cpu(OCFS2_RAW_SB(di)->s_feature_ro_compat); | |
2191 | osb->s_feature_incompat = | |
2192 | le32_to_cpu(OCFS2_RAW_SB(di)->s_feature_incompat); | |
2193 | ||
2194 | if ((i = OCFS2_HAS_INCOMPAT_FEATURE(osb->sb, ~OCFS2_FEATURE_INCOMPAT_SUPP))) { | |
2195 | mlog(ML_ERROR, "couldn't mount because of unsupported " | |
2196 | "optional features (%x).\n", i); | |
2197 | status = -EINVAL; | |
2198 | goto bail; | |
2199 | } | |
2200 | if (!(osb->sb->s_flags & MS_RDONLY) && | |
2201 | (i = OCFS2_HAS_RO_COMPAT_FEATURE(osb->sb, ~OCFS2_FEATURE_RO_COMPAT_SUPP))) { | |
2202 | mlog(ML_ERROR, "couldn't mount RDWR because of " | |
2203 | "unsupported optional features (%x).\n", i); | |
2204 | status = -EINVAL; | |
2205 | goto bail; | |
2206 | } | |
2207 | ||
98f486f2 SM |
2208 | if (ocfs2_clusterinfo_valid(osb)) { |
2209 | osb->osb_stackflags = | |
2210 | OCFS2_RAW_SB(di)->s_cluster_info.ci_stackflags; | |
c74a3bdd | 2211 | strlcpy(osb->osb_cluster_stack, |
b61817e1 | 2212 | OCFS2_RAW_SB(di)->s_cluster_info.ci_stack, |
c74a3bdd | 2213 | OCFS2_STACK_LABEL_LEN + 1); |
b61817e1 JB |
2214 | if (strlen(osb->osb_cluster_stack) != OCFS2_STACK_LABEL_LEN) { |
2215 | mlog(ML_ERROR, | |
2216 | "couldn't mount because of an invalid " | |
2217 | "cluster stack label (%s) \n", | |
2218 | osb->osb_cluster_stack); | |
2219 | status = -EINVAL; | |
2220 | goto bail; | |
2221 | } | |
c74a3bdd GR |
2222 | strlcpy(osb->osb_cluster_name, |
2223 | OCFS2_RAW_SB(di)->s_cluster_info.ci_cluster, | |
2224 | OCFS2_CLUSTER_NAME_LEN + 1); | |
b61817e1 JB |
2225 | } else { |
2226 | /* The empty string is identical with classic tools that | |
2227 | * don't know about s_cluster_info. */ | |
2228 | osb->osb_cluster_stack[0] = '\0'; | |
2229 | } | |
2230 | ||
ccd979bd MF |
2231 | get_random_bytes(&osb->s_next_generation, sizeof(u32)); |
2232 | ||
2233 | /* FIXME | |
2234 | * This should be done in ocfs2_journal_init(), but unknown | |
2235 | * ordering issues will cause the filesystem to crash. | |
2236 | * If anyone wants to figure out what part of the code | |
2237 | * refers to osb->journal before ocfs2_journal_init() is run, | |
2238 | * be my guest. | |
2239 | */ | |
2240 | /* initialize our journal structure */ | |
2241 | ||
cd861280 | 2242 | journal = kzalloc(sizeof(struct ocfs2_journal), GFP_KERNEL); |
ccd979bd MF |
2243 | if (!journal) { |
2244 | mlog(ML_ERROR, "unable to alloc journal\n"); | |
2245 | status = -ENOMEM; | |
2246 | goto bail; | |
2247 | } | |
2248 | osb->journal = journal; | |
2249 | journal->j_osb = osb; | |
2250 | ||
2251 | atomic_set(&journal->j_num_trans, 0); | |
2252 | init_rwsem(&journal->j_trans_barrier); | |
2253 | init_waitqueue_head(&journal->j_checkpointed); | |
2254 | spin_lock_init(&journal->j_lock); | |
2255 | journal->j_trans_id = (unsigned long) 1; | |
2256 | INIT_LIST_HEAD(&journal->j_la_cleanups); | |
c4028958 | 2257 | INIT_WORK(&journal->j_recovery_work, ocfs2_complete_recovery); |
ccd979bd MF |
2258 | journal->j_state = OCFS2_JOURNAL_FREE; |
2259 | ||
e3a767b6 JK |
2260 | INIT_WORK(&osb->dquot_drop_work, ocfs2_drop_dquot_refs); |
2261 | init_llist_head(&osb->dquot_drop_list); | |
2262 | ||
ccd979bd MF |
2263 | /* get some pseudo constants for clustersize bits */ |
2264 | osb->s_clustersize_bits = | |
2265 | le32_to_cpu(di->id2.i_super.s_clustersize_bits); | |
2266 | osb->s_clustersize = 1 << osb->s_clustersize_bits; | |
ccd979bd MF |
2267 | |
2268 | if (osb->s_clustersize < OCFS2_MIN_CLUSTERSIZE || | |
2269 | osb->s_clustersize > OCFS2_MAX_CLUSTERSIZE) { | |
2270 | mlog(ML_ERROR, "Volume has invalid cluster size (%d)\n", | |
2271 | osb->s_clustersize); | |
2272 | status = -EINVAL; | |
2273 | goto bail; | |
2274 | } | |
2275 | ||
3bdb8efd PL |
2276 | total_blocks = ocfs2_clusters_to_blocks(osb->sb, |
2277 | le32_to_cpu(di->i_clusters)); | |
2278 | ||
2279 | status = generic_check_addressable(osb->sb->s_blocksize_bits, | |
2280 | total_blocks); | |
2281 | if (status) { | |
2282 | mlog(ML_ERROR, "Volume too large " | |
2283 | "to mount safely on this system"); | |
2284 | status = -EFBIG; | |
ccd979bd MF |
2285 | goto bail; |
2286 | } | |
2287 | ||
2288 | if (ocfs2_setup_osb_uuid(osb, di->id2.i_super.s_uuid, | |
2289 | sizeof(di->id2.i_super.s_uuid))) { | |
2290 | mlog(ML_ERROR, "Out of memory trying to setup our uuid.\n"); | |
2291 | status = -ENOMEM; | |
2292 | goto bail; | |
2293 | } | |
2294 | ||
69201bb1 FF |
2295 | strlcpy(osb->vol_label, di->id2.i_super.s_label, |
2296 | OCFS2_MAX_VOL_LABEL_LEN); | |
ccd979bd MF |
2297 | osb->root_blkno = le64_to_cpu(di->id2.i_super.s_root_blkno); |
2298 | osb->system_dir_blkno = le64_to_cpu(di->id2.i_super.s_system_dir_blkno); | |
2299 | osb->first_cluster_group_blkno = | |
2300 | le64_to_cpu(di->id2.i_super.s_first_cluster_group); | |
2301 | osb->fs_generation = le32_to_cpu(di->i_fs_generation); | |
cf1d6c76 | 2302 | osb->uuid_hash = le32_to_cpu(di->id2.i_super.s_uuid_hash); |
32a42d39 TM |
2303 | trace_ocfs2_initialize_super(osb->vol_label, osb->uuid_str, |
2304 | (unsigned long long)osb->root_blkno, | |
2305 | (unsigned long long)osb->system_dir_blkno, | |
2306 | osb->s_clustersize_bits); | |
ccd979bd MF |
2307 | |
2308 | osb->osb_dlm_debug = ocfs2_new_dlm_debug(); | |
2309 | if (!osb->osb_dlm_debug) { | |
2310 | status = -ENOMEM; | |
2311 | mlog_errno(status); | |
2312 | goto bail; | |
2313 | } | |
2314 | ||
2315 | atomic_set(&osb->vol_state, VOLUME_INIT); | |
2316 | ||
2317 | /* load root, system_dir, and all global system inodes */ | |
2318 | status = ocfs2_init_global_system_inodes(osb); | |
2319 | if (status < 0) { | |
2320 | mlog_errno(status); | |
2321 | goto bail; | |
2322 | } | |
2323 | ||
2324 | /* | |
2325 | * global bitmap | |
2326 | */ | |
2327 | inode = ocfs2_get_system_file_inode(osb, GLOBAL_BITMAP_SYSTEM_INODE, | |
2328 | OCFS2_INVALID_SLOT); | |
2329 | if (!inode) { | |
2330 | status = -EINVAL; | |
2331 | mlog_errno(status); | |
2332 | goto bail; | |
2333 | } | |
2334 | ||
2335 | osb->bitmap_blkno = OCFS2_I(inode)->ip_blkno; | |
6b82021b | 2336 | osb->osb_clusters_at_boot = OCFS2_I(inode)->ip_clusters; |
ccd979bd | 2337 | iput(inode); |
ccd979bd | 2338 | |
8571882c TM |
2339 | osb->bitmap_cpg = ocfs2_group_bitmap_size(sb, 0, |
2340 | osb->s_feature_incompat) * 8; | |
ccd979bd MF |
2341 | |
2342 | status = ocfs2_init_slot_info(osb); | |
2343 | if (status < 0) { | |
2344 | mlog_errno(status); | |
2345 | goto bail; | |
2346 | } | |
e41d33af | 2347 | cleancache_init_shared_fs((char *)&di->id2.i_super.s_uuid, sb); |
ccd979bd | 2348 | |
ccd979bd | 2349 | bail: |
ccd979bd MF |
2350 | return status; |
2351 | } | |
2352 | ||
2353 | /* | |
2354 | * will return: -EAGAIN if it is ok to keep searching for superblocks | |
2355 | * -EINVAL if there is a bad superblock | |
2356 | * 0 on success | |
2357 | */ | |
2358 | static int ocfs2_verify_volume(struct ocfs2_dinode *di, | |
2359 | struct buffer_head *bh, | |
73be192b JB |
2360 | u32 blksz, |
2361 | struct ocfs2_blockcheck_stats *stats) | |
ccd979bd MF |
2362 | { |
2363 | int status = -EAGAIN; | |
2364 | ||
ccd979bd MF |
2365 | if (memcmp(di->i_signature, OCFS2_SUPER_BLOCK_SIGNATURE, |
2366 | strlen(OCFS2_SUPER_BLOCK_SIGNATURE)) == 0) { | |
d030cc97 JB |
2367 | /* We have to do a raw check of the feature here */ |
2368 | if (le32_to_cpu(di->id2.i_super.s_feature_incompat) & | |
2369 | OCFS2_FEATURE_INCOMPAT_META_ECC) { | |
2370 | status = ocfs2_block_check_validate(bh->b_data, | |
2371 | bh->b_size, | |
73be192b JB |
2372 | &di->i_check, |
2373 | stats); | |
d030cc97 JB |
2374 | if (status) |
2375 | goto out; | |
2376 | } | |
ccd979bd MF |
2377 | status = -EINVAL; |
2378 | if ((1 << le32_to_cpu(di->id2.i_super.s_blocksize_bits)) != blksz) { | |
2379 | mlog(ML_ERROR, "found superblock with incorrect block " | |
2380 | "size: found %u, should be %u\n", | |
2381 | 1 << le32_to_cpu(di->id2.i_super.s_blocksize_bits), | |
2382 | blksz); | |
2383 | } else if (le16_to_cpu(di->id2.i_super.s_major_rev_level) != | |
2384 | OCFS2_MAJOR_REV_LEVEL || | |
2385 | le16_to_cpu(di->id2.i_super.s_minor_rev_level) != | |
2386 | OCFS2_MINOR_REV_LEVEL) { | |
2387 | mlog(ML_ERROR, "found superblock with bad version: " | |
2388 | "found %u.%u, should be %u.%u\n", | |
2389 | le16_to_cpu(di->id2.i_super.s_major_rev_level), | |
2390 | le16_to_cpu(di->id2.i_super.s_minor_rev_level), | |
2391 | OCFS2_MAJOR_REV_LEVEL, | |
2392 | OCFS2_MINOR_REV_LEVEL); | |
2393 | } else if (bh->b_blocknr != le64_to_cpu(di->i_blkno)) { | |
2394 | mlog(ML_ERROR, "bad block number on superblock: " | |
b0697053 | 2395 | "found %llu, should be %llu\n", |
1ca1a111 | 2396 | (unsigned long long)le64_to_cpu(di->i_blkno), |
b0697053 | 2397 | (unsigned long long)bh->b_blocknr); |
ccd979bd MF |
2398 | } else if (le32_to_cpu(di->id2.i_super.s_clustersize_bits) < 12 || |
2399 | le32_to_cpu(di->id2.i_super.s_clustersize_bits) > 20) { | |
2400 | mlog(ML_ERROR, "bad cluster size found: %u\n", | |
2401 | 1 << le32_to_cpu(di->id2.i_super.s_clustersize_bits)); | |
2402 | } else if (!le64_to_cpu(di->id2.i_super.s_root_blkno)) { | |
2403 | mlog(ML_ERROR, "bad root_blkno: 0\n"); | |
2404 | } else if (!le64_to_cpu(di->id2.i_super.s_system_dir_blkno)) { | |
2405 | mlog(ML_ERROR, "bad system_dir_blkno: 0\n"); | |
2406 | } else if (le16_to_cpu(di->id2.i_super.s_max_slots) > OCFS2_MAX_SLOTS) { | |
2407 | mlog(ML_ERROR, | |
2408 | "Superblock slots found greater than file system " | |
2409 | "maximum: found %u, max %u\n", | |
2410 | le16_to_cpu(di->id2.i_super.s_max_slots), | |
2411 | OCFS2_MAX_SLOTS); | |
2412 | } else { | |
2413 | /* found it! */ | |
2414 | status = 0; | |
2415 | } | |
2416 | } | |
2417 | ||
d030cc97 | 2418 | out: |
c1e8d35e TM |
2419 | if (status && status != -EAGAIN) |
2420 | mlog_errno(status); | |
ccd979bd MF |
2421 | return status; |
2422 | } | |
2423 | ||
2424 | static int ocfs2_check_volume(struct ocfs2_super *osb) | |
2425 | { | |
bddb8eb3 | 2426 | int status; |
ccd979bd | 2427 | int dirty; |
c271c5c2 | 2428 | int local; |
ccd979bd MF |
2429 | struct ocfs2_dinode *local_alloc = NULL; /* only used if we |
2430 | * recover | |
2431 | * ourselves. */ | |
2432 | ||
ccd979bd MF |
2433 | /* Init our journal object. */ |
2434 | status = ocfs2_journal_init(osb->journal, &dirty); | |
2435 | if (status < 0) { | |
2436 | mlog(ML_ERROR, "Could not initialize journal!\n"); | |
2437 | goto finally; | |
2438 | } | |
2439 | ||
3bdb8efd PL |
2440 | /* Now that journal has been initialized, check to make sure |
2441 | entire volume is addressable. */ | |
2442 | status = ocfs2_journal_addressable(osb); | |
2443 | if (status) | |
2444 | goto finally; | |
2445 | ||
ccd979bd MF |
2446 | /* If the journal was unmounted cleanly then we don't want to |
2447 | * recover anything. Otherwise, journal_load will do that | |
2448 | * dirty work for us :) */ | |
2449 | if (!dirty) { | |
2450 | status = ocfs2_journal_wipe(osb->journal, 0); | |
2451 | if (status < 0) { | |
2452 | mlog_errno(status); | |
2453 | goto finally; | |
2454 | } | |
2455 | } else { | |
619c200d SM |
2456 | printk(KERN_NOTICE "ocfs2: File system on device (%s) was not " |
2457 | "unmounted cleanly, recovering it.\n", osb->dev_str); | |
ccd979bd MF |
2458 | } |
2459 | ||
c271c5c2 SM |
2460 | local = ocfs2_mount_local(osb); |
2461 | ||
ccd979bd | 2462 | /* will play back anything left in the journal. */ |
539d8264 | 2463 | status = ocfs2_journal_load(osb->journal, local, dirty); |
01af4820 WW |
2464 | if (status < 0) { |
2465 | mlog(ML_ERROR, "ocfs2 journal load failed! %d\n", status); | |
2466 | goto finally; | |
2467 | } | |
ccd979bd MF |
2468 | |
2469 | if (dirty) { | |
2470 | /* recover my local alloc if we didn't unmount cleanly. */ | |
2471 | status = ocfs2_begin_local_alloc_recovery(osb, | |
2472 | osb->slot_num, | |
2473 | &local_alloc); | |
2474 | if (status < 0) { | |
2475 | mlog_errno(status); | |
2476 | goto finally; | |
2477 | } | |
2478 | /* we complete the recovery process after we've marked | |
2479 | * ourselves as mounted. */ | |
2480 | } | |
2481 | ||
ccd979bd MF |
2482 | status = ocfs2_load_local_alloc(osb); |
2483 | if (status < 0) { | |
2484 | mlog_errno(status); | |
2485 | goto finally; | |
2486 | } | |
2487 | ||
2488 | if (dirty) { | |
2489 | /* Recovery will be completed after we've mounted the | |
2490 | * rest of the volume. */ | |
2491 | osb->dirty = 1; | |
2492 | osb->local_alloc_copy = local_alloc; | |
2493 | local_alloc = NULL; | |
2494 | } | |
2495 | ||
2496 | /* go through each journal, trylock it and if you get the | |
2497 | * lock, and it's marked as dirty, set the bit in the recover | |
2498 | * map and launch a recovery thread for it. */ | |
2499 | status = ocfs2_mark_dead_nodes(osb); | |
9140db04 SE |
2500 | if (status < 0) { |
2501 | mlog_errno(status); | |
2502 | goto finally; | |
2503 | } | |
2504 | ||
2505 | status = ocfs2_compute_replay_slots(osb); | |
ccd979bd MF |
2506 | if (status < 0) |
2507 | mlog_errno(status); | |
2508 | ||
2509 | finally: | |
d787ab09 | 2510 | kfree(local_alloc); |
ccd979bd | 2511 | |
c1e8d35e TM |
2512 | if (status) |
2513 | mlog_errno(status); | |
ccd979bd MF |
2514 | return status; |
2515 | } | |
2516 | ||
2517 | /* | |
2518 | * The routine gets called from dismount or close whenever a dismount on | |
2519 | * volume is requested and the osb open count becomes 1. | |
2520 | * It will remove the osb from the global list and also free up all the | |
2521 | * initialized resources and fileobject. | |
2522 | */ | |
2523 | static void ocfs2_delete_osb(struct ocfs2_super *osb) | |
2524 | { | |
ccd979bd MF |
2525 | /* This function assumes that the caller has the main osb resource */ |
2526 | ||
8e8a4603 | 2527 | ocfs2_free_slot_info(osb); |
ccd979bd | 2528 | |
b4df6ed8 | 2529 | kfree(osb->osb_orphan_wipes); |
539d8264 | 2530 | kfree(osb->slot_recovery_generations); |
ccd979bd MF |
2531 | /* FIXME |
2532 | * This belongs in journal shutdown, but because we have to | |
421f91d2 | 2533 | * allocate osb->journal at the start of ocfs2_initialize_osb(), |
ccd979bd MF |
2534 | * we free it here. |
2535 | */ | |
2536 | kfree(osb->journal); | |
d787ab09 | 2537 | kfree(osb->local_alloc_copy); |
ccd979bd MF |
2538 | kfree(osb->uuid_str); |
2539 | ocfs2_put_dlm_debug(osb->osb_dlm_debug); | |
2540 | memset(osb, 0, sizeof(struct ocfs2_super)); | |
ccd979bd MF |
2541 | } |
2542 | ||
2543 | /* Put OCFS2 into a readonly state, or (if the user specifies it), | |
2544 | * panic(). We do not support continue-on-error operation. */ | |
2545 | static void ocfs2_handle_error(struct super_block *sb) | |
2546 | { | |
2547 | struct ocfs2_super *osb = OCFS2_SB(sb); | |
2548 | ||
2549 | if (osb->s_mount_opt & OCFS2_MOUNT_ERRORS_PANIC) | |
2550 | panic("OCFS2: (device %s): panic forced after error\n", | |
2551 | sb->s_id); | |
2552 | ||
2553 | ocfs2_set_osb_flag(osb, OCFS2_OSB_ERROR_FS); | |
2554 | ||
2555 | if (sb->s_flags & MS_RDONLY && | |
2556 | (ocfs2_is_soft_readonly(osb) || | |
2557 | ocfs2_is_hard_readonly(osb))) | |
2558 | return; | |
2559 | ||
2560 | printk(KERN_CRIT "File system is now read-only due to the potential " | |
2561 | "of on-disk corruption. Please run fsck.ocfs2 once the file " | |
2562 | "system is unmounted.\n"); | |
2563 | sb->s_flags |= MS_RDONLY; | |
2564 | ocfs2_set_ro_flag(osb, 0); | |
2565 | } | |
2566 | ||
2567 | static char error_buf[1024]; | |
2568 | ||
2569 | void __ocfs2_error(struct super_block *sb, | |
2570 | const char *function, | |
2571 | const char *fmt, ...) | |
2572 | { | |
2573 | va_list args; | |
2574 | ||
2575 | va_start(args, fmt); | |
4a6e617a | 2576 | vsnprintf(error_buf, sizeof(error_buf), fmt, args); |
ccd979bd MF |
2577 | va_end(args); |
2578 | ||
2579 | /* Not using mlog here because we want to show the actual | |
2580 | * function the error came from. */ | |
2581 | printk(KERN_CRIT "OCFS2: ERROR (device %s): %s: %s\n", | |
2582 | sb->s_id, function, error_buf); | |
2583 | ||
2584 | ocfs2_handle_error(sb); | |
2585 | } | |
2586 | ||
2587 | /* Handle critical errors. This is intentionally more drastic than | |
2588 | * ocfs2_handle_error, so we only use for things like journal errors, | |
2589 | * etc. */ | |
2590 | void __ocfs2_abort(struct super_block* sb, | |
2591 | const char *function, | |
2592 | const char *fmt, ...) | |
2593 | { | |
2594 | va_list args; | |
2595 | ||
2596 | va_start(args, fmt); | |
4a6e617a | 2597 | vsnprintf(error_buf, sizeof(error_buf), fmt, args); |
ccd979bd MF |
2598 | va_end(args); |
2599 | ||
2600 | printk(KERN_CRIT "OCFS2: abort (device %s): %s: %s\n", | |
2601 | sb->s_id, function, error_buf); | |
2602 | ||
2603 | /* We don't have the cluster support yet to go straight to | |
2604 | * hard readonly in here. Until then, we want to keep | |
2605 | * ocfs2_abort() so that we can at least mark critical | |
2606 | * errors. | |
2607 | * | |
2608 | * TODO: This should abort the journal and alert other nodes | |
2609 | * that our slot needs recovery. */ | |
2610 | ||
2611 | /* Force a panic(). This stinks, but it's better than letting | |
2612 | * things continue without having a proper hard readonly | |
2613 | * here. */ | |
a2f2ddbf SM |
2614 | if (!ocfs2_mount_local(OCFS2_SB(sb))) |
2615 | OCFS2_SB(sb)->s_mount_opt |= OCFS2_MOUNT_ERRORS_PANIC; | |
ccd979bd MF |
2616 | ocfs2_handle_error(sb); |
2617 | } | |
2618 | ||
e4b963f1 JB |
2619 | /* |
2620 | * Void signal blockers, because in-kernel sigprocmask() only fails | |
2621 | * when SIG_* is wrong. | |
2622 | */ | |
2623 | void ocfs2_block_signals(sigset_t *oldset) | |
2624 | { | |
2625 | int rc; | |
2626 | sigset_t blocked; | |
2627 | ||
2628 | sigfillset(&blocked); | |
2629 | rc = sigprocmask(SIG_BLOCK, &blocked, oldset); | |
2630 | BUG_ON(rc); | |
2631 | } | |
2632 | ||
2633 | void ocfs2_unblock_signals(sigset_t *oldset) | |
2634 | { | |
2635 | int rc = sigprocmask(SIG_SETMASK, oldset, NULL); | |
2636 | BUG_ON(rc); | |
2637 | } | |
2638 | ||
ccd979bd MF |
2639 | module_init(ocfs2_init); |
2640 | module_exit(ocfs2_exit); |