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