Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /* |
2 | * Copyright 2000 by Hans Reiser, licensing governed by reiserfs/README | |
3 | * | |
4 | * Trivial changes by Alan Cox to add the LFS fixes | |
5 | * | |
6 | * Trivial Changes: | |
7 | * Rights granted to Hans Reiser to redistribute under other terms providing | |
8 | * he accepts all liability including but not limited to patent, fitness | |
9 | * for purpose, and direct or indirect claims arising from failure to perform. | |
10 | * | |
11 | * NO WARRANTY | |
12 | */ | |
13 | ||
1da177e4 | 14 | #include <linux/module.h> |
5a0e3ad6 | 15 | #include <linux/slab.h> |
1da177e4 LT |
16 | #include <linux/vmalloc.h> |
17 | #include <linux/time.h> | |
17093991 | 18 | #include <linux/uaccess.h> |
f466c6fd | 19 | #include "reiserfs.h" |
a3063ab8 | 20 | #include "acl.h" |
c45ac888 | 21 | #include "xattr.h" |
1da177e4 LT |
22 | #include <linux/init.h> |
23 | #include <linux/blkdev.h> | |
24 | #include <linux/buffer_head.h> | |
a5694255 | 25 | #include <linux/exportfs.h> |
74abb989 | 26 | #include <linux/quotaops.h> |
1da177e4 | 27 | #include <linux/vfs.h> |
1da177e4 LT |
28 | #include <linux/mount.h> |
29 | #include <linux/namei.h> | |
651d0623 | 30 | #include <linux/crc32.h> |
c3aa0776 | 31 | #include <linux/seq_file.h> |
1da177e4 LT |
32 | |
33 | struct file_system_type reiserfs_fs_type; | |
34 | ||
35 | static const char reiserfs_3_5_magic_string[] = REISERFS_SUPER_MAGIC_STRING; | |
36 | static const char reiserfs_3_6_magic_string[] = REISER2FS_SUPER_MAGIC_STRING; | |
37 | static const char reiserfs_jr_magic_string[] = REISER2FS_JR_SUPER_MAGIC_STRING; | |
38 | ||
bd4c625c | 39 | int is_reiserfs_3_5(struct reiserfs_super_block *rs) |
1da177e4 | 40 | { |
bd4c625c LT |
41 | return !strncmp(rs->s_v1.s_magic, reiserfs_3_5_magic_string, |
42 | strlen(reiserfs_3_5_magic_string)); | |
1da177e4 LT |
43 | } |
44 | ||
bd4c625c | 45 | int is_reiserfs_3_6(struct reiserfs_super_block *rs) |
1da177e4 | 46 | { |
bd4c625c LT |
47 | return !strncmp(rs->s_v1.s_magic, reiserfs_3_6_magic_string, |
48 | strlen(reiserfs_3_6_magic_string)); | |
1da177e4 LT |
49 | } |
50 | ||
bd4c625c | 51 | int is_reiserfs_jr(struct reiserfs_super_block *rs) |
1da177e4 | 52 | { |
bd4c625c LT |
53 | return !strncmp(rs->s_v1.s_magic, reiserfs_jr_magic_string, |
54 | strlen(reiserfs_jr_magic_string)); | |
1da177e4 LT |
55 | } |
56 | ||
bd4c625c | 57 | static int is_any_reiserfs_magic_string(struct reiserfs_super_block *rs) |
1da177e4 | 58 | { |
bd4c625c LT |
59 | return (is_reiserfs_3_5(rs) || is_reiserfs_3_6(rs) || |
60 | is_reiserfs_jr(rs)); | |
1da177e4 LT |
61 | } |
62 | ||
bd4c625c | 63 | static int reiserfs_remount(struct super_block *s, int *flags, char *data); |
726c3342 | 64 | static int reiserfs_statfs(struct dentry *dentry, struct kstatfs *buf); |
1da177e4 | 65 | |
bd4c625c | 66 | static int reiserfs_sync_fs(struct super_block *s, int wait) |
1da177e4 | 67 | { |
5af7926f CH |
68 | struct reiserfs_transaction_handle th; |
69 | ||
a1177825 JK |
70 | /* |
71 | * Writeback quota in non-journalled quota case - journalled quota has | |
72 | * no dirty dquots | |
73 | */ | |
74 | dquot_writeback_dquots(s, -1); | |
5af7926f CH |
75 | reiserfs_write_lock(s); |
76 | if (!journal_begin(&th, s, 1)) | |
58d85426 | 77 | if (!journal_end_sync(&th)) |
5af7926f | 78 | reiserfs_flush_old_commits(s); |
5af7926f | 79 | reiserfs_write_unlock(s); |
bd4c625c | 80 | return 0; |
1da177e4 LT |
81 | } |
82 | ||
033369d1 | 83 | static void flush_old_commits(struct work_struct *work) |
1da177e4 | 84 | { |
033369d1 AB |
85 | struct reiserfs_sb_info *sbi; |
86 | struct super_block *s; | |
87 | ||
88 | sbi = container_of(work, struct reiserfs_sb_info, old_work.work); | |
89 | s = sbi->s_journal->j_work_sb; | |
90 | ||
91 | spin_lock(&sbi->old_work_lock); | |
92 | sbi->work_queued = 0; | |
93 | spin_unlock(&sbi->old_work_lock); | |
94 | ||
bd4c625c | 95 | reiserfs_sync_fs(s, 1); |
1da177e4 LT |
96 | } |
97 | ||
033369d1 AB |
98 | void reiserfs_schedule_old_flush(struct super_block *s) |
99 | { | |
100 | struct reiserfs_sb_info *sbi = REISERFS_SB(s); | |
101 | unsigned long delay; | |
102 | ||
01777836 JK |
103 | /* |
104 | * Avoid scheduling flush when sb is being shut down. It can race | |
105 | * with journal shutdown and free still queued delayed work. | |
106 | */ | |
107 | if (s->s_flags & MS_RDONLY || !(s->s_flags & MS_ACTIVE)) | |
033369d1 AB |
108 | return; |
109 | ||
110 | spin_lock(&sbi->old_work_lock); | |
111 | if (!sbi->work_queued) { | |
112 | delay = msecs_to_jiffies(dirty_writeback_interval * 10); | |
113 | queue_delayed_work(system_long_wq, &sbi->old_work, delay); | |
114 | sbi->work_queued = 1; | |
115 | } | |
116 | spin_unlock(&sbi->old_work_lock); | |
117 | } | |
118 | ||
119 | static void cancel_old_flush(struct super_block *s) | |
120 | { | |
121 | struct reiserfs_sb_info *sbi = REISERFS_SB(s); | |
122 | ||
123 | cancel_delayed_work_sync(&REISERFS_SB(s)->old_work); | |
124 | spin_lock(&sbi->old_work_lock); | |
125 | sbi->work_queued = 0; | |
126 | spin_unlock(&sbi->old_work_lock); | |
127 | } | |
128 | ||
c4be0c1d | 129 | static int reiserfs_freeze(struct super_block *s) |
1da177e4 | 130 | { |
bd4c625c | 131 | struct reiserfs_transaction_handle th; |
033369d1 AB |
132 | |
133 | cancel_old_flush(s); | |
134 | ||
bd4c625c LT |
135 | reiserfs_write_lock(s); |
136 | if (!(s->s_flags & MS_RDONLY)) { | |
137 | int err = journal_begin(&th, s, 1); | |
138 | if (err) { | |
139 | reiserfs_block_writes(&th); | |
140 | } else { | |
141 | reiserfs_prepare_for_journal(s, SB_BUFFER_WITH_SB(s), | |
142 | 1); | |
09f1b80b | 143 | journal_mark_dirty(&th, SB_BUFFER_WITH_SB(s)); |
bd4c625c | 144 | reiserfs_block_writes(&th); |
58d85426 | 145 | journal_end_sync(&th); |
bd4c625c LT |
146 | } |
147 | } | |
bd4c625c | 148 | reiserfs_write_unlock(s); |
c4be0c1d | 149 | return 0; |
1da177e4 LT |
150 | } |
151 | ||
c4be0c1d | 152 | static int reiserfs_unfreeze(struct super_block *s) |
bd4c625c LT |
153 | { |
154 | reiserfs_allow_writes(s); | |
c4be0c1d | 155 | return 0; |
1da177e4 LT |
156 | } |
157 | ||
bd4c625c | 158 | extern const struct in_core_key MAX_IN_CORE_KEY; |
1da177e4 | 159 | |
098297b2 JM |
160 | /* |
161 | * this is used to delete "save link" when there are no items of a | |
162 | * file it points to. It can either happen if unlink is completed but | |
163 | * "save unlink" removal, or if file has both unlink and truncate | |
164 | * pending and as unlink completes first (because key of "save link" | |
165 | * protecting unlink is bigger that a key lf "save link" which | |
166 | * protects truncate), so there left no items to make truncate | |
167 | * completion on | |
168 | */ | |
bd4c625c LT |
169 | static int remove_save_link_only(struct super_block *s, |
170 | struct reiserfs_key *key, int oid_free) | |
1da177e4 | 171 | { |
bd4c625c LT |
172 | struct reiserfs_transaction_handle th; |
173 | int err; | |
174 | ||
175 | /* we are going to do one balancing */ | |
176 | err = journal_begin(&th, s, JOURNAL_PER_BALANCE_CNT); | |
177 | if (err) | |
178 | return err; | |
179 | ||
180 | reiserfs_delete_solid_item(&th, NULL, key); | |
181 | if (oid_free) | |
182 | /* removals are protected by direct items */ | |
183 | reiserfs_release_objectid(&th, le32_to_cpu(key->k_objectid)); | |
184 | ||
58d85426 | 185 | return journal_end(&th); |
1da177e4 | 186 | } |
bd4c625c | 187 | |
1da177e4 LT |
188 | #ifdef CONFIG_QUOTA |
189 | static int reiserfs_quota_on_mount(struct super_block *, int); | |
190 | #endif | |
bd4c625c | 191 | |
1da177e4 | 192 | /* look for uncompleted unlinks and truncates and complete them */ |
bd4c625c | 193 | static int finish_unfinished(struct super_block *s) |
1da177e4 | 194 | { |
bd4c625c LT |
195 | INITIALIZE_PATH(path); |
196 | struct cpu_key max_cpu_key, obj_key; | |
fb46f341 | 197 | struct reiserfs_key save_link_key, last_inode_key; |
bd4c625c LT |
198 | int retval = 0; |
199 | struct item_head *ih; | |
200 | struct buffer_head *bh; | |
201 | int item_pos; | |
202 | char *item; | |
203 | int done; | |
204 | struct inode *inode; | |
205 | int truncate; | |
1da177e4 | 206 | #ifdef CONFIG_QUOTA |
bd4c625c LT |
207 | int i; |
208 | int ms_active_set; | |
aca60617 | 209 | int quota_enabled[REISERFS_MAXQUOTAS]; |
1da177e4 | 210 | #endif |
bd4c625c LT |
211 | |
212 | /* compose key to look for "save" links */ | |
213 | max_cpu_key.version = KEY_FORMAT_3_5; | |
214 | max_cpu_key.on_disk_key.k_dir_id = ~0U; | |
215 | max_cpu_key.on_disk_key.k_objectid = ~0U; | |
216 | set_cpu_key_k_offset(&max_cpu_key, ~0U); | |
217 | max_cpu_key.key_length = 3; | |
1da177e4 | 218 | |
fb46f341 LW |
219 | memset(&last_inode_key, 0, sizeof(last_inode_key)); |
220 | ||
1da177e4 | 221 | #ifdef CONFIG_QUOTA |
bd4c625c LT |
222 | /* Needed for iput() to work correctly and not trash data */ |
223 | if (s->s_flags & MS_ACTIVE) { | |
224 | ms_active_set = 0; | |
225 | } else { | |
226 | ms_active_set = 1; | |
227 | s->s_flags |= MS_ACTIVE; | |
228 | } | |
229 | /* Turn on quotas so that they are updated correctly */ | |
aca60617 | 230 | for (i = 0; i < REISERFS_MAXQUOTAS; i++) { |
f4b113ae | 231 | quota_enabled[i] = 1; |
bd4c625c | 232 | if (REISERFS_SB(s)->s_qf_names[i]) { |
f4b113ae JK |
233 | int ret; |
234 | ||
235 | if (sb_has_quota_active(s, i)) { | |
236 | quota_enabled[i] = 0; | |
237 | continue; | |
238 | } | |
239 | ret = reiserfs_quota_on_mount(s, i); | |
bd4c625c | 240 | if (ret < 0) |
45b03d5e JM |
241 | reiserfs_warning(s, "reiserfs-2500", |
242 | "cannot turn on journaled " | |
243 | "quota: error %d", ret); | |
bd4c625c LT |
244 | } |
245 | } | |
1da177e4 | 246 | #endif |
bd4c625c LT |
247 | |
248 | done = 0; | |
249 | REISERFS_SB(s)->s_is_unlinked_ok = 1; | |
250 | while (!retval) { | |
d2d0395f | 251 | int depth; |
bd4c625c LT |
252 | retval = search_item(s, &max_cpu_key, &path); |
253 | if (retval != ITEM_NOT_FOUND) { | |
0030b645 JM |
254 | reiserfs_error(s, "vs-2140", |
255 | "search_by_key returned %d", retval); | |
bd4c625c LT |
256 | break; |
257 | } | |
258 | ||
259 | bh = get_last_bh(&path); | |
260 | item_pos = get_item_pos(&path); | |
261 | if (item_pos != B_NR_ITEMS(bh)) { | |
45b03d5e JM |
262 | reiserfs_warning(s, "vs-2060", |
263 | "wrong position found"); | |
bd4c625c LT |
264 | break; |
265 | } | |
266 | item_pos--; | |
4cf5f7ad | 267 | ih = item_head(bh, item_pos); |
bd4c625c LT |
268 | |
269 | if (le32_to_cpu(ih->ih_key.k_dir_id) != MAX_KEY_OBJECTID) | |
270 | /* there are no "save" links anymore */ | |
271 | break; | |
272 | ||
273 | save_link_key = ih->ih_key; | |
274 | if (is_indirect_le_ih(ih)) | |
275 | truncate = 1; | |
276 | else | |
277 | truncate = 0; | |
278 | ||
279 | /* reiserfs_iget needs k_dirid and k_objectid only */ | |
4cf5f7ad | 280 | item = ih_item_body(bh, ih); |
bd4c625c LT |
281 | obj_key.on_disk_key.k_dir_id = le32_to_cpu(*(__le32 *) item); |
282 | obj_key.on_disk_key.k_objectid = | |
283 | le32_to_cpu(ih->ih_key.k_objectid); | |
284 | obj_key.on_disk_key.k_offset = 0; | |
285 | obj_key.on_disk_key.k_type = 0; | |
286 | ||
287 | pathrelse(&path); | |
288 | ||
289 | inode = reiserfs_iget(s, &obj_key); | |
290 | if (!inode) { | |
098297b2 JM |
291 | /* |
292 | * the unlink almost completed, it just did not | |
293 | * manage to remove "save" link and release objectid | |
294 | */ | |
45b03d5e | 295 | reiserfs_warning(s, "vs-2180", "iget failed for %K", |
bd4c625c LT |
296 | &obj_key); |
297 | retval = remove_save_link_only(s, &save_link_key, 1); | |
298 | continue; | |
299 | } | |
300 | ||
301 | if (!truncate && inode->i_nlink) { | |
302 | /* file is not unlinked */ | |
45b03d5e JM |
303 | reiserfs_warning(s, "vs-2185", |
304 | "file %K is not unlinked", | |
bd4c625c LT |
305 | &obj_key); |
306 | retval = remove_save_link_only(s, &save_link_key, 0); | |
307 | continue; | |
308 | } | |
d2d0395f | 309 | depth = reiserfs_write_unlock_nested(inode->i_sb); |
871a2931 | 310 | dquot_initialize(inode); |
d2d0395f | 311 | reiserfs_write_lock_nested(inode->i_sb, depth); |
bd4c625c LT |
312 | |
313 | if (truncate && S_ISDIR(inode->i_mode)) { | |
098297b2 JM |
314 | /* |
315 | * We got a truncate request for a dir which | |
316 | * is impossible. The only imaginable way is to | |
317 | * execute unfinished truncate request then boot | |
318 | * into old kernel, remove the file and create dir | |
319 | * with the same key. | |
320 | */ | |
45b03d5e JM |
321 | reiserfs_warning(s, "green-2101", |
322 | "impossible truncate on a " | |
323 | "directory %k. Please report", | |
bd4c625c LT |
324 | INODE_PKEY(inode)); |
325 | retval = remove_save_link_only(s, &save_link_key, 0); | |
326 | truncate = 0; | |
327 | iput(inode); | |
328 | continue; | |
329 | } | |
330 | ||
331 | if (truncate) { | |
332 | REISERFS_I(inode)->i_flags |= | |
333 | i_link_saved_truncate_mask; | |
098297b2 JM |
334 | /* |
335 | * not completed truncate found. New size was | |
336 | * committed together with "save" link | |
337 | */ | |
53872ed0 | 338 | reiserfs_info(s, "Truncating %k to %lld ..", |
bd4c625c | 339 | INODE_PKEY(inode), inode->i_size); |
098297b2 JM |
340 | |
341 | /* don't update modification time */ | |
342 | reiserfs_truncate_file(inode, 0); | |
343 | ||
bd4c625c LT |
344 | retval = remove_save_link(inode, truncate); |
345 | } else { | |
346 | REISERFS_I(inode)->i_flags |= i_link_saved_unlink_mask; | |
347 | /* not completed unlink (rmdir) found */ | |
348 | reiserfs_info(s, "Removing %k..", INODE_PKEY(inode)); | |
fb46f341 LW |
349 | if (memcmp(&last_inode_key, INODE_PKEY(inode), |
350 | sizeof(last_inode_key))){ | |
351 | last_inode_key = *INODE_PKEY(inode); | |
352 | /* removal gets completed in iput */ | |
353 | retval = 0; | |
354 | } else { | |
45b03d5e JM |
355 | reiserfs_warning(s, "super-2189", "Dead loop " |
356 | "in finish_unfinished " | |
357 | "detected, just remove " | |
358 | "save link\n"); | |
fb46f341 LW |
359 | retval = remove_save_link_only(s, |
360 | &save_link_key, 0); | |
361 | } | |
bd4c625c LT |
362 | } |
363 | ||
364 | iput(inode); | |
365 | printk("done\n"); | |
366 | done++; | |
367 | } | |
368 | REISERFS_SB(s)->s_is_unlinked_ok = 0; | |
369 | ||
1da177e4 | 370 | #ifdef CONFIG_QUOTA |
bd4c625c | 371 | /* Turn quotas off */ |
d2d0395f | 372 | reiserfs_write_unlock(s); |
aca60617 | 373 | for (i = 0; i < REISERFS_MAXQUOTAS; i++) { |
f4b113ae | 374 | if (sb_dqopt(s)->files[i] && quota_enabled[i]) |
287a8095 | 375 | dquot_quota_off(s, i); |
bd4c625c | 376 | } |
d2d0395f | 377 | reiserfs_write_lock(s); |
bd4c625c LT |
378 | if (ms_active_set) |
379 | /* Restore the flag back */ | |
380 | s->s_flags &= ~MS_ACTIVE; | |
1da177e4 | 381 | #endif |
bd4c625c LT |
382 | pathrelse(&path); |
383 | if (done) | |
384 | reiserfs_info(s, "There were %d uncompleted unlinks/truncates. " | |
385 | "Completed\n", done); | |
386 | return retval; | |
1da177e4 | 387 | } |
bd4c625c | 388 | |
098297b2 JM |
389 | /* |
390 | * to protect file being unlinked from getting lost we "safe" link files | |
391 | * being unlinked. This link will be deleted in the same transaction with last | |
392 | * item of file. mounting the filesystem we scan all these links and remove | |
393 | * files which almost got lost | |
394 | */ | |
bd4c625c LT |
395 | void add_save_link(struct reiserfs_transaction_handle *th, |
396 | struct inode *inode, int truncate) | |
1da177e4 | 397 | { |
bd4c625c LT |
398 | INITIALIZE_PATH(path); |
399 | int retval; | |
400 | struct cpu_key key; | |
401 | struct item_head ih; | |
402 | __le32 link; | |
403 | ||
404 | BUG_ON(!th->t_trans_id); | |
405 | ||
406 | /* file can only get one "save link" of each kind */ | |
407 | RFALSE(truncate && | |
408 | (REISERFS_I(inode)->i_flags & i_link_saved_truncate_mask), | |
409 | "saved link already exists for truncated inode %lx", | |
410 | (long)inode->i_ino); | |
411 | RFALSE(!truncate && | |
412 | (REISERFS_I(inode)->i_flags & i_link_saved_unlink_mask), | |
413 | "saved link already exists for unlinked inode %lx", | |
414 | (long)inode->i_ino); | |
415 | ||
416 | /* setup key of "save" link */ | |
417 | key.version = KEY_FORMAT_3_5; | |
418 | key.on_disk_key.k_dir_id = MAX_KEY_OBJECTID; | |
419 | key.on_disk_key.k_objectid = inode->i_ino; | |
420 | if (!truncate) { | |
421 | /* unlink, rmdir, rename */ | |
422 | set_cpu_key_k_offset(&key, 1 + inode->i_sb->s_blocksize); | |
423 | set_cpu_key_k_type(&key, TYPE_DIRECT); | |
424 | ||
425 | /* item head of "safe" link */ | |
426 | make_le_item_head(&ih, &key, key.version, | |
427 | 1 + inode->i_sb->s_blocksize, TYPE_DIRECT, | |
428 | 4 /*length */ , 0xffff /*free space */ ); | |
429 | } else { | |
430 | /* truncate */ | |
431 | if (S_ISDIR(inode->i_mode)) | |
45b03d5e JM |
432 | reiserfs_warning(inode->i_sb, "green-2102", |
433 | "Adding a truncate savelink for " | |
434 | "a directory %k! Please report", | |
bd4c625c LT |
435 | INODE_PKEY(inode)); |
436 | set_cpu_key_k_offset(&key, 1); | |
437 | set_cpu_key_k_type(&key, TYPE_INDIRECT); | |
438 | ||
439 | /* item head of "safe" link */ | |
440 | make_le_item_head(&ih, &key, key.version, 1, TYPE_INDIRECT, | |
441 | 4 /*length */ , 0 /*free space */ ); | |
442 | } | |
443 | key.key_length = 3; | |
444 | ||
445 | /* look for its place in the tree */ | |
446 | retval = search_item(inode->i_sb, &key, &path); | |
447 | if (retval != ITEM_NOT_FOUND) { | |
448 | if (retval != -ENOSPC) | |
0030b645 JM |
449 | reiserfs_error(inode->i_sb, "vs-2100", |
450 | "search_by_key (%K) returned %d", &key, | |
451 | retval); | |
bd4c625c LT |
452 | pathrelse(&path); |
453 | return; | |
454 | } | |
1da177e4 | 455 | |
bd4c625c LT |
456 | /* body of "save" link */ |
457 | link = INODE_PKEY(inode)->k_dir_id; | |
458 | ||
25985edc | 459 | /* put "save" link into tree, don't charge quota to anyone */ |
bd4c625c LT |
460 | retval = |
461 | reiserfs_insert_item(th, &path, &key, &ih, NULL, (char *)&link); | |
462 | if (retval) { | |
463 | if (retval != -ENOSPC) | |
0030b645 JM |
464 | reiserfs_error(inode->i_sb, "vs-2120", |
465 | "insert_item returned %d", retval); | |
bd4c625c LT |
466 | } else { |
467 | if (truncate) | |
468 | REISERFS_I(inode)->i_flags |= | |
469 | i_link_saved_truncate_mask; | |
470 | else | |
471 | REISERFS_I(inode)->i_flags |= i_link_saved_unlink_mask; | |
472 | } | |
473 | } | |
1da177e4 LT |
474 | |
475 | /* this opens transaction unlike add_save_link */ | |
bd4c625c | 476 | int remove_save_link(struct inode *inode, int truncate) |
1da177e4 | 477 | { |
bd4c625c LT |
478 | struct reiserfs_transaction_handle th; |
479 | struct reiserfs_key key; | |
480 | int err; | |
481 | ||
482 | /* we are going to do one balancing only */ | |
483 | err = journal_begin(&th, inode->i_sb, JOURNAL_PER_BALANCE_CNT); | |
484 | if (err) | |
485 | return err; | |
486 | ||
487 | /* setup key of "save" link */ | |
488 | key.k_dir_id = cpu_to_le32(MAX_KEY_OBJECTID); | |
489 | key.k_objectid = INODE_PKEY(inode)->k_objectid; | |
490 | if (!truncate) { | |
491 | /* unlink, rmdir, rename */ | |
492 | set_le_key_k_offset(KEY_FORMAT_3_5, &key, | |
493 | 1 + inode->i_sb->s_blocksize); | |
494 | set_le_key_k_type(KEY_FORMAT_3_5, &key, TYPE_DIRECT); | |
495 | } else { | |
496 | /* truncate */ | |
497 | set_le_key_k_offset(KEY_FORMAT_3_5, &key, 1); | |
498 | set_le_key_k_type(KEY_FORMAT_3_5, &key, TYPE_INDIRECT); | |
499 | } | |
1da177e4 | 500 | |
bd4c625c LT |
501 | if ((truncate && |
502 | (REISERFS_I(inode)->i_flags & i_link_saved_truncate_mask)) || | |
503 | (!truncate && | |
504 | (REISERFS_I(inode)->i_flags & i_link_saved_unlink_mask))) | |
505 | /* don't take quota bytes from anywhere */ | |
506 | reiserfs_delete_solid_item(&th, NULL, &key); | |
507 | if (!truncate) { | |
508 | reiserfs_release_objectid(&th, inode->i_ino); | |
509 | REISERFS_I(inode)->i_flags &= ~i_link_saved_unlink_mask; | |
510 | } else | |
511 | REISERFS_I(inode)->i_flags &= ~i_link_saved_truncate_mask; | |
512 | ||
58d85426 | 513 | return journal_end(&th); |
bd4c625c | 514 | } |
1da177e4 | 515 | |
edc666e2 | 516 | static void reiserfs_kill_sb(struct super_block *s) |
1da177e4 | 517 | { |
edc666e2 | 518 | if (REISERFS_SB(s)) { |
672fe15d | 519 | reiserfs_proc_info_done(s); |
a9e36da6 JM |
520 | /* |
521 | * Force any pending inode evictions to occur now. Any | |
522 | * inodes to be removed that have extended attributes | |
523 | * associated with them need to clean them up before | |
524 | * we can release the extended attribute root dentries. | |
525 | * shrink_dcache_for_umount will BUG if we don't release | |
526 | * those before it's called so ->put_super is too late. | |
527 | */ | |
528 | shrink_dcache_sb(s); | |
529 | ||
530 | dput(REISERFS_SB(s)->xattr_root); | |
531 | REISERFS_SB(s)->xattr_root = NULL; | |
532 | dput(REISERFS_SB(s)->priv_root); | |
533 | REISERFS_SB(s)->priv_root = NULL; | |
bd4c625c LT |
534 | } |
535 | ||
edc666e2 DH |
536 | kill_block_super(s); |
537 | } | |
538 | ||
539 | static void reiserfs_put_super(struct super_block *s) | |
540 | { | |
541 | struct reiserfs_transaction_handle th; | |
542 | th.t_trans_id = 0; | |
bd4c625c | 543 | |
e0ccfd95 CH |
544 | dquot_disable(s, -1, DQUOT_USAGE_ENABLED | DQUOT_LIMITS_ENABLED); |
545 | ||
8ebc4232 | 546 | reiserfs_write_lock(s); |
6cfd0148 | 547 | |
098297b2 JM |
548 | /* |
549 | * change file system state to current state if it was mounted | |
550 | * with read-write permissions | |
551 | */ | |
bd4c625c LT |
552 | if (!(s->s_flags & MS_RDONLY)) { |
553 | if (!journal_begin(&th, s, 10)) { | |
554 | reiserfs_prepare_for_journal(s, SB_BUFFER_WITH_SB(s), | |
555 | 1); | |
556 | set_sb_umount_state(SB_DISK_SUPER_BLOCK(s), | |
557 | REISERFS_SB(s)->s_mount_state); | |
09f1b80b | 558 | journal_mark_dirty(&th, SB_BUFFER_WITH_SB(s)); |
bd4c625c LT |
559 | } |
560 | } | |
561 | ||
098297b2 JM |
562 | /* |
563 | * note, journal_release checks for readonly mount, and can | |
564 | * decide not to do a journal_end | |
bd4c625c LT |
565 | */ |
566 | journal_release(&th, s); | |
567 | ||
5065227b | 568 | reiserfs_free_bitmap_cache(s); |
bd4c625c LT |
569 | |
570 | brelse(SB_BUFFER_WITH_SB(s)); | |
571 | ||
572 | print_statistics(s); | |
573 | ||
bd4c625c | 574 | if (REISERFS_SB(s)->reserved_blocks != 0) { |
45b03d5e | 575 | reiserfs_warning(s, "green-2005", "reserved blocks left %d", |
bd4c625c LT |
576 | REISERFS_SB(s)->reserved_blocks); |
577 | } | |
578 | ||
8ebc4232 FW |
579 | reiserfs_write_unlock(s); |
580 | mutex_destroy(&REISERFS_SB(s)->lock); | |
797d9016 | 581 | destroy_workqueue(REISERFS_SB(s)->commit_wq); |
bd4c625c LT |
582 | kfree(s->s_fs_info); |
583 | s->s_fs_info = NULL; | |
1da177e4 LT |
584 | } |
585 | ||
e18b890b | 586 | static struct kmem_cache *reiserfs_inode_cachep; |
1da177e4 LT |
587 | |
588 | static struct inode *reiserfs_alloc_inode(struct super_block *sb) | |
589 | { | |
590 | struct reiserfs_inode_info *ei; | |
bd4c625c | 591 | ei = (struct reiserfs_inode_info *) |
e94b1766 | 592 | kmem_cache_alloc(reiserfs_inode_cachep, GFP_KERNEL); |
1da177e4 LT |
593 | if (!ei) |
594 | return NULL; | |
0e4f6a79 AV |
595 | atomic_set(&ei->openers, 0); |
596 | mutex_init(&ei->tailpack); | |
53873638 JK |
597 | #ifdef CONFIG_QUOTA |
598 | memset(&ei->i_dquot, 0, sizeof(ei->i_dquot)); | |
599 | #endif | |
600 | ||
1da177e4 LT |
601 | return &ei->vfs_inode; |
602 | } | |
603 | ||
fa0d7e3d | 604 | static void reiserfs_i_callback(struct rcu_head *head) |
1da177e4 | 605 | { |
fa0d7e3d | 606 | struct inode *inode = container_of(head, struct inode, i_rcu); |
1da177e4 LT |
607 | kmem_cache_free(reiserfs_inode_cachep, REISERFS_I(inode)); |
608 | } | |
609 | ||
fa0d7e3d NP |
610 | static void reiserfs_destroy_inode(struct inode *inode) |
611 | { | |
612 | call_rcu(&inode->i_rcu, reiserfs_i_callback); | |
613 | } | |
614 | ||
51cc5068 | 615 | static void init_once(void *foo) |
1da177e4 | 616 | { |
bd4c625c | 617 | struct reiserfs_inode_info *ei = (struct reiserfs_inode_info *)foo; |
1da177e4 | 618 | |
a35afb83 CL |
619 | INIT_LIST_HEAD(&ei->i_prealloc_list); |
620 | inode_init_once(&ei->vfs_inode); | |
1da177e4 | 621 | } |
bd4c625c | 622 | |
31e14368 | 623 | static int __init init_inodecache(void) |
1da177e4 LT |
624 | { |
625 | reiserfs_inode_cachep = kmem_cache_create("reiser_inode_cache", | |
bd4c625c LT |
626 | sizeof(struct |
627 | reiserfs_inode_info), | |
fffb60f9 PJ |
628 | 0, (SLAB_RECLAIM_ACCOUNT| |
629 | SLAB_MEM_SPREAD), | |
20c2df83 | 630 | init_once); |
1da177e4 LT |
631 | if (reiserfs_inode_cachep == NULL) |
632 | return -ENOMEM; | |
633 | return 0; | |
634 | } | |
635 | ||
636 | static void destroy_inodecache(void) | |
637 | { | |
8c0a8537 KS |
638 | /* |
639 | * Make sure all delayed rcu free inodes are flushed before we | |
640 | * destroy cache. | |
641 | */ | |
642 | rcu_barrier(); | |
1a1d92c1 | 643 | kmem_cache_destroy(reiserfs_inode_cachep); |
1da177e4 LT |
644 | } |
645 | ||
646 | /* we don't mark inodes dirty, we just log them */ | |
aa385729 | 647 | static void reiserfs_dirty_inode(struct inode *inode, int flags) |
bd4c625c LT |
648 | { |
649 | struct reiserfs_transaction_handle th; | |
650 | ||
651 | int err = 0; | |
dc8f6d89 | 652 | |
bd4c625c | 653 | if (inode->i_sb->s_flags & MS_RDONLY) { |
45b03d5e JM |
654 | reiserfs_warning(inode->i_sb, "clm-6006", |
655 | "writing inode %lu on readonly FS", | |
bd4c625c LT |
656 | inode->i_ino); |
657 | return; | |
658 | } | |
278f6679 | 659 | reiserfs_write_lock(inode->i_sb); |
bd4c625c | 660 | |
098297b2 JM |
661 | /* |
662 | * this is really only used for atime updates, so they don't have | |
663 | * to be included in O_SYNC or fsync | |
bd4c625c LT |
664 | */ |
665 | err = journal_begin(&th, inode->i_sb, 1); | |
dc8f6d89 FW |
666 | if (err) |
667 | goto out; | |
668 | ||
bd4c625c | 669 | reiserfs_update_sd(&th, inode); |
58d85426 | 670 | journal_end(&th); |
dc8f6d89 FW |
671 | |
672 | out: | |
278f6679 | 673 | reiserfs_write_unlock(inode->i_sb); |
1da177e4 LT |
674 | } |
675 | ||
c3aa0776 JK |
676 | static int reiserfs_show_options(struct seq_file *seq, struct dentry *root) |
677 | { | |
678 | struct super_block *s = root->d_sb; | |
679 | struct reiserfs_journal *journal = SB_JOURNAL(s); | |
680 | long opts = REISERFS_SB(s)->s_mount_opt; | |
681 | ||
682 | if (opts & (1 << REISERFS_LARGETAIL)) | |
683 | seq_puts(seq, ",tails=on"); | |
684 | else if (!(opts & (1 << REISERFS_SMALLTAIL))) | |
685 | seq_puts(seq, ",notail"); | |
686 | /* tails=small is default so we don't show it */ | |
687 | ||
688 | if (!(opts & (1 << REISERFS_BARRIER_FLUSH))) | |
689 | seq_puts(seq, ",barrier=none"); | |
690 | /* barrier=flush is default so we don't show it */ | |
691 | ||
692 | if (opts & (1 << REISERFS_ERROR_CONTINUE)) | |
693 | seq_puts(seq, ",errors=continue"); | |
694 | else if (opts & (1 << REISERFS_ERROR_PANIC)) | |
695 | seq_puts(seq, ",errors=panic"); | |
696 | /* errors=ro is default so we don't show it */ | |
697 | ||
698 | if (opts & (1 << REISERFS_DATA_LOG)) | |
699 | seq_puts(seq, ",data=journal"); | |
700 | else if (opts & (1 << REISERFS_DATA_WRITEBACK)) | |
701 | seq_puts(seq, ",data=writeback"); | |
702 | /* data=ordered is default so we don't show it */ | |
703 | ||
704 | if (opts & (1 << REISERFS_ATTRS)) | |
705 | seq_puts(seq, ",attrs"); | |
706 | ||
707 | if (opts & (1 << REISERFS_XATTRS_USER)) | |
708 | seq_puts(seq, ",user_xattr"); | |
709 | ||
710 | if (opts & (1 << REISERFS_EXPOSE_PRIVROOT)) | |
711 | seq_puts(seq, ",expose_privroot"); | |
712 | ||
713 | if (opts & (1 << REISERFS_POSIXACL)) | |
714 | seq_puts(seq, ",acl"); | |
715 | ||
716 | if (REISERFS_SB(s)->s_jdev) | |
717 | seq_printf(seq, ",jdev=%s", REISERFS_SB(s)->s_jdev); | |
718 | ||
719 | if (journal->j_max_commit_age != journal->j_default_max_commit_age) | |
720 | seq_printf(seq, ",commit=%d", journal->j_max_commit_age); | |
721 | ||
722 | #ifdef CONFIG_QUOTA | |
723 | if (REISERFS_SB(s)->s_qf_names[USRQUOTA]) | |
724 | seq_printf(seq, ",usrjquota=%s", REISERFS_SB(s)->s_qf_names[USRQUOTA]); | |
725 | else if (opts & (1 << REISERFS_USRQUOTA)) | |
726 | seq_puts(seq, ",usrquota"); | |
727 | if (REISERFS_SB(s)->s_qf_names[GRPQUOTA]) | |
728 | seq_printf(seq, ",grpjquota=%s", REISERFS_SB(s)->s_qf_names[GRPQUOTA]); | |
729 | else if (opts & (1 << REISERFS_GRPQUOTA)) | |
730 | seq_puts(seq, ",grpquota"); | |
731 | if (REISERFS_SB(s)->s_jquota_fmt) { | |
732 | if (REISERFS_SB(s)->s_jquota_fmt == QFMT_VFS_OLD) | |
733 | seq_puts(seq, ",jqfmt=vfsold"); | |
734 | else if (REISERFS_SB(s)->s_jquota_fmt == QFMT_VFS_V0) | |
735 | seq_puts(seq, ",jqfmt=vfsv0"); | |
736 | } | |
737 | #endif | |
738 | ||
739 | /* Block allocator options */ | |
740 | if (opts & (1 << REISERFS_NO_BORDER)) | |
741 | seq_puts(seq, ",block-allocator=noborder"); | |
742 | if (opts & (1 << REISERFS_NO_UNHASHED_RELOCATION)) | |
743 | seq_puts(seq, ",block-allocator=no_unhashed_relocation"); | |
744 | if (opts & (1 << REISERFS_HASHED_RELOCATION)) | |
745 | seq_puts(seq, ",block-allocator=hashed_relocation"); | |
746 | if (opts & (1 << REISERFS_TEST4)) | |
747 | seq_puts(seq, ",block-allocator=test4"); | |
748 | show_alloc_options(seq, s); | |
749 | return 0; | |
750 | } | |
751 | ||
1da177e4 | 752 | #ifdef CONFIG_QUOTA |
bd4c625c LT |
753 | static ssize_t reiserfs_quota_write(struct super_block *, int, const char *, |
754 | size_t, loff_t); | |
755 | static ssize_t reiserfs_quota_read(struct super_block *, int, char *, size_t, | |
756 | loff_t); | |
53873638 JK |
757 | |
758 | static struct dquot **reiserfs_get_dquots(struct inode *inode) | |
759 | { | |
760 | return REISERFS_I(inode)->i_dquot; | |
761 | } | |
1da177e4 LT |
762 | #endif |
763 | ||
ee9b6d61 | 764 | static const struct super_operations reiserfs_sops = { |
bd4c625c LT |
765 | .alloc_inode = reiserfs_alloc_inode, |
766 | .destroy_inode = reiserfs_destroy_inode, | |
767 | .write_inode = reiserfs_write_inode, | |
768 | .dirty_inode = reiserfs_dirty_inode, | |
845a2cc0 | 769 | .evict_inode = reiserfs_evict_inode, |
bd4c625c | 770 | .put_super = reiserfs_put_super, |
bd4c625c | 771 | .sync_fs = reiserfs_sync_fs, |
c4be0c1d TS |
772 | .freeze_fs = reiserfs_freeze, |
773 | .unfreeze_fs = reiserfs_unfreeze, | |
bd4c625c LT |
774 | .statfs = reiserfs_statfs, |
775 | .remount_fs = reiserfs_remount, | |
c3aa0776 | 776 | .show_options = reiserfs_show_options, |
1da177e4 | 777 | #ifdef CONFIG_QUOTA |
bd4c625c LT |
778 | .quota_read = reiserfs_quota_read, |
779 | .quota_write = reiserfs_quota_write, | |
53873638 | 780 | .get_dquots = reiserfs_get_dquots, |
1da177e4 LT |
781 | #endif |
782 | }; | |
783 | ||
784 | #ifdef CONFIG_QUOTA | |
785 | #define QTYPE2NAME(t) ((t)==USRQUOTA?"user":"group") | |
786 | ||
1da177e4 LT |
787 | static int reiserfs_write_dquot(struct dquot *); |
788 | static int reiserfs_acquire_dquot(struct dquot *); | |
789 | static int reiserfs_release_dquot(struct dquot *); | |
790 | static int reiserfs_mark_dquot_dirty(struct dquot *); | |
791 | static int reiserfs_write_info(struct super_block *, int); | |
f00c9e44 | 792 | static int reiserfs_quota_on(struct super_block *, int, int, struct path *); |
1da177e4 | 793 | |
61e225dc | 794 | static const struct dquot_operations reiserfs_quota_operations = { |
bd4c625c LT |
795 | .write_dquot = reiserfs_write_dquot, |
796 | .acquire_dquot = reiserfs_acquire_dquot, | |
797 | .release_dquot = reiserfs_release_dquot, | |
798 | .mark_dirty = reiserfs_mark_dquot_dirty, | |
799 | .write_info = reiserfs_write_info, | |
4103003b JK |
800 | .alloc_dquot = dquot_alloc, |
801 | .destroy_dquot = dquot_destroy, | |
1da177e4 LT |
802 | }; |
803 | ||
0d54b217 | 804 | static const struct quotactl_ops reiserfs_qctl_operations = { |
bd4c625c | 805 | .quota_on = reiserfs_quota_on, |
287a8095 CH |
806 | .quota_off = dquot_quota_off, |
807 | .quota_sync = dquot_quota_sync, | |
808 | .get_info = dquot_get_dqinfo, | |
809 | .set_info = dquot_set_dqinfo, | |
810 | .get_dqblk = dquot_get_dqblk, | |
811 | .set_dqblk = dquot_set_dqblk, | |
1da177e4 LT |
812 | }; |
813 | #endif | |
814 | ||
39655164 | 815 | static const struct export_operations reiserfs_export_ops = { |
bd4c625c | 816 | .encode_fh = reiserfs_encode_fh, |
be55caf1 CH |
817 | .fh_to_dentry = reiserfs_fh_to_dentry, |
818 | .fh_to_parent = reiserfs_fh_to_parent, | |
bd4c625c | 819 | .get_parent = reiserfs_get_parent, |
bd4c625c | 820 | }; |
1da177e4 | 821 | |
098297b2 JM |
822 | /* |
823 | * this struct is used in reiserfs_getopt () for containing the value for | |
824 | * those mount options that have values rather than being toggles. | |
825 | */ | |
1da177e4 | 826 | typedef struct { |
bd4c625c | 827 | char *value; |
098297b2 JM |
828 | /* |
829 | * bitmask which is to set on mount_options bitmask | |
830 | * when this value is found, 0 is no bits are to be changed. | |
831 | */ | |
832 | int setmask; | |
833 | /* | |
834 | * bitmask which is to clear on mount_options bitmask | |
835 | * when this value is found, 0 is no bits are to be changed. | |
836 | * This is applied BEFORE setmask | |
837 | */ | |
838 | int clrmask; | |
1da177e4 LT |
839 | } arg_desc_t; |
840 | ||
841 | /* Set this bit in arg_required to allow empty arguments */ | |
842 | #define REISERFS_OPT_ALLOWEMPTY 31 | |
843 | ||
098297b2 JM |
844 | /* |
845 | * this struct is used in reiserfs_getopt() for describing the | |
846 | * set of reiserfs mount options | |
847 | */ | |
1da177e4 | 848 | typedef struct { |
bd4c625c | 849 | char *option_name; |
098297b2 JM |
850 | |
851 | /* 0 if argument is not required, not 0 otherwise */ | |
852 | int arg_required; | |
853 | ||
854 | /* list of values accepted by an option */ | |
855 | const arg_desc_t *values; | |
856 | ||
857 | /* | |
858 | * bitmask which is to set on mount_options bitmask | |
859 | * when this value is found, 0 is no bits are to be changed. | |
860 | */ | |
861 | int setmask; | |
862 | ||
863 | /* | |
864 | * bitmask which is to clear on mount_options bitmask | |
865 | * when this value is found, 0 is no bits are to be changed. | |
866 | * This is applied BEFORE setmask | |
867 | */ | |
868 | int clrmask; | |
1da177e4 LT |
869 | } opt_desc_t; |
870 | ||
871 | /* possible values for -o data= */ | |
872 | static const arg_desc_t logging_mode[] = { | |
bd4c625c LT |
873 | {"ordered", 1 << REISERFS_DATA_ORDERED, |
874 | (1 << REISERFS_DATA_LOG | 1 << REISERFS_DATA_WRITEBACK)}, | |
875 | {"journal", 1 << REISERFS_DATA_LOG, | |
876 | (1 << REISERFS_DATA_ORDERED | 1 << REISERFS_DATA_WRITEBACK)}, | |
877 | {"writeback", 1 << REISERFS_DATA_WRITEBACK, | |
878 | (1 << REISERFS_DATA_ORDERED | 1 << REISERFS_DATA_LOG)}, | |
cd02b966 | 879 | {.value = NULL} |
1da177e4 LT |
880 | }; |
881 | ||
882 | /* possible values for -o barrier= */ | |
883 | static const arg_desc_t barrier_mode[] = { | |
bd4c625c LT |
884 | {"none", 1 << REISERFS_BARRIER_NONE, 1 << REISERFS_BARRIER_FLUSH}, |
885 | {"flush", 1 << REISERFS_BARRIER_FLUSH, 1 << REISERFS_BARRIER_NONE}, | |
cd02b966 | 886 | {.value = NULL} |
1da177e4 LT |
887 | }; |
888 | ||
098297b2 JM |
889 | /* |
890 | * possible values for "-o block-allocator=" and bits which are to be set in | |
891 | * s_mount_opt of reiserfs specific part of in-core super block | |
892 | */ | |
1da177e4 | 893 | static const arg_desc_t balloc[] = { |
bd4c625c LT |
894 | {"noborder", 1 << REISERFS_NO_BORDER, 0}, |
895 | {"border", 0, 1 << REISERFS_NO_BORDER}, | |
896 | {"no_unhashed_relocation", 1 << REISERFS_NO_UNHASHED_RELOCATION, 0}, | |
897 | {"hashed_relocation", 1 << REISERFS_HASHED_RELOCATION, 0}, | |
898 | {"test4", 1 << REISERFS_TEST4, 0}, | |
899 | {"notest4", 0, 1 << REISERFS_TEST4}, | |
900 | {NULL, 0, 0} | |
1da177e4 LT |
901 | }; |
902 | ||
903 | static const arg_desc_t tails[] = { | |
bd4c625c LT |
904 | {"on", 1 << REISERFS_LARGETAIL, 1 << REISERFS_SMALLTAIL}, |
905 | {"off", 0, (1 << REISERFS_LARGETAIL) | (1 << REISERFS_SMALLTAIL)}, | |
906 | {"small", 1 << REISERFS_SMALLTAIL, 1 << REISERFS_LARGETAIL}, | |
907 | {NULL, 0, 0} | |
1da177e4 LT |
908 | }; |
909 | ||
910 | static const arg_desc_t error_actions[] = { | |
bd4c625c LT |
911 | {"panic", 1 << REISERFS_ERROR_PANIC, |
912 | (1 << REISERFS_ERROR_RO | 1 << REISERFS_ERROR_CONTINUE)}, | |
913 | {"ro-remount", 1 << REISERFS_ERROR_RO, | |
914 | (1 << REISERFS_ERROR_PANIC | 1 << REISERFS_ERROR_CONTINUE)}, | |
1da177e4 | 915 | #ifdef REISERFS_JOURNAL_ERROR_ALLOWS_NO_LOG |
bd4c625c LT |
916 | {"continue", 1 << REISERFS_ERROR_CONTINUE, |
917 | (1 << REISERFS_ERROR_PANIC | 1 << REISERFS_ERROR_RO)}, | |
1da177e4 | 918 | #endif |
bd4c625c | 919 | {NULL, 0, 0}, |
1da177e4 LT |
920 | }; |
921 | ||
098297b2 JM |
922 | /* |
923 | * proceed only one option from a list *cur - string containing of mount | |
924 | * options | |
925 | * opts - array of options which are accepted | |
926 | * opt_arg - if option is found and requires an argument and if it is specifed | |
927 | * in the input - pointer to the argument is stored here | |
928 | * bit_flags - if option requires to set a certain bit - it is set here | |
929 | * return -1 if unknown option is found, opt->arg_required otherwise | |
930 | */ | |
bd4c625c LT |
931 | static int reiserfs_getopt(struct super_block *s, char **cur, opt_desc_t * opts, |
932 | char **opt_arg, unsigned long *bit_flags) | |
1da177e4 | 933 | { |
bd4c625c | 934 | char *p; |
098297b2 JM |
935 | /* |
936 | * foo=bar, | |
937 | * ^ ^ ^ | |
938 | * | | +-- option_end | |
939 | * | +-- arg_start | |
940 | * +-- option_start | |
bd4c625c LT |
941 | */ |
942 | const opt_desc_t *opt; | |
943 | const arg_desc_t *arg; | |
944 | ||
945 | p = *cur; | |
946 | ||
947 | /* assume argument cannot contain commas */ | |
948 | *cur = strchr(p, ','); | |
949 | if (*cur) { | |
950 | *(*cur) = '\0'; | |
951 | (*cur)++; | |
952 | } | |
953 | ||
954 | if (!strncmp(p, "alloc=", 6)) { | |
098297b2 JM |
955 | /* |
956 | * Ugly special case, probably we should redo options | |
957 | * parser so that it can understand several arguments for | |
958 | * some options, also so that it can fill several bitfields | |
959 | * with option values. | |
960 | */ | |
bd4c625c LT |
961 | if (reiserfs_parse_alloc_options(s, p + 6)) { |
962 | return -1; | |
963 | } else { | |
964 | return 0; | |
965 | } | |
966 | } | |
967 | ||
968 | /* for every option in the list */ | |
969 | for (opt = opts; opt->option_name; opt++) { | |
970 | if (!strncmp(p, opt->option_name, strlen(opt->option_name))) { | |
971 | if (bit_flags) { | |
972 | if (opt->clrmask == | |
973 | (1 << REISERFS_UNSUPPORTED_OPT)) | |
45b03d5e JM |
974 | reiserfs_warning(s, "super-6500", |
975 | "%s not supported.\n", | |
bd4c625c LT |
976 | p); |
977 | else | |
978 | *bit_flags &= ~opt->clrmask; | |
979 | if (opt->setmask == | |
980 | (1 << REISERFS_UNSUPPORTED_OPT)) | |
45b03d5e JM |
981 | reiserfs_warning(s, "super-6501", |
982 | "%s not supported.\n", | |
bd4c625c LT |
983 | p); |
984 | else | |
985 | *bit_flags |= opt->setmask; | |
986 | } | |
987 | break; | |
988 | } | |
989 | } | |
990 | if (!opt->option_name) { | |
45b03d5e JM |
991 | reiserfs_warning(s, "super-6502", |
992 | "unknown mount option \"%s\"", p); | |
bd4c625c LT |
993 | return -1; |
994 | } | |
995 | ||
996 | p += strlen(opt->option_name); | |
997 | switch (*p) { | |
998 | case '=': | |
999 | if (!opt->arg_required) { | |
45b03d5e JM |
1000 | reiserfs_warning(s, "super-6503", |
1001 | "the option \"%s\" does not " | |
1002 | "require an argument\n", | |
bd4c625c LT |
1003 | opt->option_name); |
1004 | return -1; | |
1005 | } | |
1006 | break; | |
1007 | ||
1008 | case 0: | |
1009 | if (opt->arg_required) { | |
45b03d5e JM |
1010 | reiserfs_warning(s, "super-6504", |
1011 | "the option \"%s\" requires an " | |
1012 | "argument\n", opt->option_name); | |
bd4c625c LT |
1013 | return -1; |
1014 | } | |
1015 | break; | |
1016 | default: | |
45b03d5e JM |
1017 | reiserfs_warning(s, "super-6505", |
1018 | "head of option \"%s\" is only correct\n", | |
bd4c625c LT |
1019 | opt->option_name); |
1020 | return -1; | |
1021 | } | |
1022 | ||
098297b2 JM |
1023 | /* |
1024 | * move to the argument, or to next option if argument is not | |
1025 | * required | |
1026 | */ | |
bd4c625c LT |
1027 | p++; |
1028 | ||
1029 | if (opt->arg_required | |
1030 | && !(opt->arg_required & (1 << REISERFS_OPT_ALLOWEMPTY)) | |
1031 | && !strlen(p)) { | |
1032 | /* this catches "option=," if not allowed */ | |
45b03d5e JM |
1033 | reiserfs_warning(s, "super-6506", |
1034 | "empty argument for \"%s\"\n", | |
bd4c625c LT |
1035 | opt->option_name); |
1036 | return -1; | |
1037 | } | |
1038 | ||
1039 | if (!opt->values) { | |
1040 | /* *=NULLopt_arg contains pointer to argument */ | |
1041 | *opt_arg = p; | |
1042 | return opt->arg_required & ~(1 << REISERFS_OPT_ALLOWEMPTY); | |
1043 | } | |
1044 | ||
1045 | /* values possible for this option are listed in opt->values */ | |
1046 | for (arg = opt->values; arg->value; arg++) { | |
1047 | if (!strcmp(p, arg->value)) { | |
1048 | if (bit_flags) { | |
1049 | *bit_flags &= ~arg->clrmask; | |
1050 | *bit_flags |= arg->setmask; | |
1051 | } | |
1052 | return opt->arg_required; | |
1053 | } | |
1054 | } | |
1055 | ||
45b03d5e JM |
1056 | reiserfs_warning(s, "super-6506", |
1057 | "bad value \"%s\" for option \"%s\"\n", p, | |
bd4c625c | 1058 | opt->option_name); |
1da177e4 | 1059 | return -1; |
1da177e4 LT |
1060 | } |
1061 | ||
1062 | /* returns 0 if something is wrong in option string, 1 - otherwise */ | |
098297b2 JM |
1063 | static int reiserfs_parse_options(struct super_block *s, |
1064 | ||
1065 | /* string given via mount's -o */ | |
1066 | char *options, | |
1067 | ||
1068 | /* | |
1069 | * after the parsing phase, contains the | |
1070 | * collection of bitflags defining what | |
1071 | * mount options were selected. | |
1072 | */ | |
bd4c625c | 1073 | unsigned long *mount_options, |
098297b2 JM |
1074 | |
1075 | /* strtol-ed from NNN of resize=NNN */ | |
1076 | unsigned long *blocks, | |
bd4c625c | 1077 | char **jdev_name, |
00b44197 JK |
1078 | unsigned int *commit_max_age, |
1079 | char **qf_names, | |
1080 | unsigned int *qfmt) | |
1da177e4 | 1081 | { |
bd4c625c LT |
1082 | int c; |
1083 | char *arg = NULL; | |
1084 | char *pos; | |
1085 | opt_desc_t opts[] = { | |
098297b2 JM |
1086 | /* |
1087 | * Compatibility stuff, so that -o notail for old | |
1088 | * setups still work | |
1089 | */ | |
bd4c625c LT |
1090 | {"tails",.arg_required = 't',.values = tails}, |
1091 | {"notail",.clrmask = | |
1092 | (1 << REISERFS_LARGETAIL) | (1 << REISERFS_SMALLTAIL)}, | |
1093 | {"conv",.setmask = 1 << REISERFS_CONVERT}, | |
1094 | {"attrs",.setmask = 1 << REISERFS_ATTRS}, | |
1095 | {"noattrs",.clrmask = 1 << REISERFS_ATTRS}, | |
73422811 | 1096 | {"expose_privroot", .setmask = 1 << REISERFS_EXPOSE_PRIVROOT}, |
1da177e4 | 1097 | #ifdef CONFIG_REISERFS_FS_XATTR |
bd4c625c LT |
1098 | {"user_xattr",.setmask = 1 << REISERFS_XATTRS_USER}, |
1099 | {"nouser_xattr",.clrmask = 1 << REISERFS_XATTRS_USER}, | |
1da177e4 | 1100 | #else |
bd4c625c LT |
1101 | {"user_xattr",.setmask = 1 << REISERFS_UNSUPPORTED_OPT}, |
1102 | {"nouser_xattr",.clrmask = 1 << REISERFS_UNSUPPORTED_OPT}, | |
1da177e4 LT |
1103 | #endif |
1104 | #ifdef CONFIG_REISERFS_FS_POSIX_ACL | |
bd4c625c LT |
1105 | {"acl",.setmask = 1 << REISERFS_POSIXACL}, |
1106 | {"noacl",.clrmask = 1 << REISERFS_POSIXACL}, | |
1da177e4 | 1107 | #else |
bd4c625c LT |
1108 | {"acl",.setmask = 1 << REISERFS_UNSUPPORTED_OPT}, |
1109 | {"noacl",.clrmask = 1 << REISERFS_UNSUPPORTED_OPT}, | |
1da177e4 | 1110 | #endif |
cd02b966 | 1111 | {.option_name = "nolog"}, |
bd4c625c LT |
1112 | {"replayonly",.setmask = 1 << REPLAYONLY}, |
1113 | {"block-allocator",.arg_required = 'a',.values = balloc}, | |
1114 | {"data",.arg_required = 'd',.values = logging_mode}, | |
1115 | {"barrier",.arg_required = 'b',.values = barrier_mode}, | |
1116 | {"resize",.arg_required = 'r',.values = NULL}, | |
1117 | {"jdev",.arg_required = 'j',.values = NULL}, | |
1118 | {"nolargeio",.arg_required = 'w',.values = NULL}, | |
1119 | {"commit",.arg_required = 'c',.values = NULL}, | |
c3aa0776 JK |
1120 | {"usrquota",.setmask = 1 << REISERFS_USRQUOTA}, |
1121 | {"grpquota",.setmask = 1 << REISERFS_GRPQUOTA}, | |
1122 | {"noquota",.clrmask = 1 << REISERFS_USRQUOTA | 1 << REISERFS_GRPQUOTA}, | |
bd4c625c LT |
1123 | {"errors",.arg_required = 'e',.values = error_actions}, |
1124 | {"usrjquota",.arg_required = | |
1125 | 'u' | (1 << REISERFS_OPT_ALLOWEMPTY),.values = NULL}, | |
1126 | {"grpjquota",.arg_required = | |
1127 | 'g' | (1 << REISERFS_OPT_ALLOWEMPTY),.values = NULL}, | |
1128 | {"jqfmt",.arg_required = 'f',.values = NULL}, | |
cd02b966 | 1129 | {.option_name = NULL} |
bd4c625c LT |
1130 | }; |
1131 | ||
1132 | *blocks = 0; | |
1133 | if (!options || !*options) | |
098297b2 JM |
1134 | /* |
1135 | * use default configuration: create tails, journaling on, no | |
1136 | * conversion to newest format | |
1137 | */ | |
bd4c625c LT |
1138 | return 1; |
1139 | ||
1140 | for (pos = options; pos;) { | |
1141 | c = reiserfs_getopt(s, &pos, opts, &arg, mount_options); | |
1142 | if (c == -1) | |
1143 | /* wrong option is given */ | |
9a3bb301 | 1144 | return 0; |
1da177e4 | 1145 | |
bd4c625c LT |
1146 | if (c == 'r') { |
1147 | char *p; | |
1148 | ||
1149 | p = NULL; | |
1150 | /* "resize=NNN" or "resize=auto" */ | |
1151 | ||
1152 | if (!strcmp(arg, "auto")) { | |
1153 | /* From JFS code, to auto-get the size. */ | |
1154 | *blocks = | |
1155 | s->s_bdev->bd_inode->i_size >> s-> | |
1156 | s_blocksize_bits; | |
1157 | } else { | |
1158 | *blocks = simple_strtoul(arg, &p, 0); | |
1159 | if (*p != '\0') { | |
1160 | /* NNN does not look like a number */ | |
45b03d5e JM |
1161 | reiserfs_warning(s, "super-6507", |
1162 | "bad value %s for " | |
1163 | "-oresize\n", arg); | |
bd4c625c LT |
1164 | return 0; |
1165 | } | |
1166 | } | |
1da177e4 | 1167 | } |
1da177e4 | 1168 | |
bd4c625c LT |
1169 | if (c == 'c') { |
1170 | char *p = NULL; | |
1171 | unsigned long val = simple_strtoul(arg, &p, 0); | |
1172 | /* commit=NNN (time in seconds) */ | |
1173 | if (*p != '\0' || val >= (unsigned int)-1) { | |
45b03d5e JM |
1174 | reiserfs_warning(s, "super-6508", |
1175 | "bad value %s for -ocommit\n", | |
bd4c625c LT |
1176 | arg); |
1177 | return 0; | |
1178 | } | |
1179 | *commit_max_age = (unsigned int)val; | |
1da177e4 | 1180 | } |
1da177e4 | 1181 | |
bd4c625c | 1182 | if (c == 'w') { |
45b03d5e JM |
1183 | reiserfs_warning(s, "super-6509", "nolargeio option " |
1184 | "is no longer supported"); | |
36b756f2 | 1185 | return 0; |
1da177e4 | 1186 | } |
1da177e4 | 1187 | |
bd4c625c LT |
1188 | if (c == 'j') { |
1189 | if (arg && *arg && jdev_name) { | |
098297b2 JM |
1190 | /* Hm, already assigned? */ |
1191 | if (*jdev_name) { | |
45b03d5e JM |
1192 | reiserfs_warning(s, "super-6510", |
1193 | "journal device was " | |
1194 | "already specified to " | |
1195 | "be %s", *jdev_name); | |
bd4c625c LT |
1196 | return 0; |
1197 | } | |
1198 | *jdev_name = arg; | |
1199 | } | |
1da177e4 | 1200 | } |
bd4c625c LT |
1201 | #ifdef CONFIG_QUOTA |
1202 | if (c == 'u' || c == 'g') { | |
1203 | int qtype = c == 'u' ? USRQUOTA : GRPQUOTA; | |
1204 | ||
6929f891 | 1205 | if (sb_any_quota_loaded(s) && |
00b44197 | 1206 | (!*arg != !REISERFS_SB(s)->s_qf_names[qtype])) { |
45b03d5e JM |
1207 | reiserfs_warning(s, "super-6511", |
1208 | "cannot change journaled " | |
1209 | "quota options when quota " | |
1210 | "turned on."); | |
bd4c625c LT |
1211 | return 0; |
1212 | } | |
1213 | if (*arg) { /* Some filename specified? */ | |
1214 | if (REISERFS_SB(s)->s_qf_names[qtype] | |
1215 | && strcmp(REISERFS_SB(s)->s_qf_names[qtype], | |
1216 | arg)) { | |
45b03d5e JM |
1217 | reiserfs_warning(s, "super-6512", |
1218 | "%s quota file " | |
1219 | "already specified.", | |
bd4c625c LT |
1220 | QTYPE2NAME(qtype)); |
1221 | return 0; | |
1222 | } | |
1223 | if (strchr(arg, '/')) { | |
45b03d5e JM |
1224 | reiserfs_warning(s, "super-6513", |
1225 | "quotafile must be " | |
1226 | "on filesystem root."); | |
bd4c625c LT |
1227 | return 0; |
1228 | } | |
af591ad8 | 1229 | qf_names[qtype] = kstrdup(arg, GFP_KERNEL); |
00b44197 | 1230 | if (!qf_names[qtype]) { |
45b03d5e JM |
1231 | reiserfs_warning(s, "reiserfs-2502", |
1232 | "not enough memory " | |
1233 | "for storing " | |
1234 | "quotafile name."); | |
bd4c625c LT |
1235 | return 0; |
1236 | } | |
c3aa0776 JK |
1237 | if (qtype == USRQUOTA) |
1238 | *mount_options |= 1 << REISERFS_USRQUOTA; | |
1239 | else | |
1240 | *mount_options |= 1 << REISERFS_GRPQUOTA; | |
bd4c625c | 1241 | } else { |
00b44197 JK |
1242 | if (qf_names[qtype] != |
1243 | REISERFS_SB(s)->s_qf_names[qtype]) | |
1244 | kfree(qf_names[qtype]); | |
1245 | qf_names[qtype] = NULL; | |
c3aa0776 JK |
1246 | if (qtype == USRQUOTA) |
1247 | *mount_options &= ~(1 << REISERFS_USRQUOTA); | |
1248 | else | |
1249 | *mount_options &= ~(1 << REISERFS_GRPQUOTA); | |
bd4c625c | 1250 | } |
1da177e4 | 1251 | } |
bd4c625c LT |
1252 | if (c == 'f') { |
1253 | if (!strcmp(arg, "vfsold")) | |
00b44197 | 1254 | *qfmt = QFMT_VFS_OLD; |
bd4c625c | 1255 | else if (!strcmp(arg, "vfsv0")) |
00b44197 | 1256 | *qfmt = QFMT_VFS_V0; |
bd4c625c | 1257 | else { |
45b03d5e JM |
1258 | reiserfs_warning(s, "super-6514", |
1259 | "unknown quota format " | |
1260 | "specified."); | |
bd4c625c LT |
1261 | return 0; |
1262 | } | |
6929f891 | 1263 | if (sb_any_quota_loaded(s) && |
00b44197 | 1264 | *qfmt != REISERFS_SB(s)->s_jquota_fmt) { |
45b03d5e JM |
1265 | reiserfs_warning(s, "super-6515", |
1266 | "cannot change journaled " | |
1267 | "quota options when quota " | |
1268 | "turned on."); | |
00b44197 JK |
1269 | return 0; |
1270 | } | |
1da177e4 | 1271 | } |
bd4c625c LT |
1272 | #else |
1273 | if (c == 'u' || c == 'g' || c == 'f') { | |
45b03d5e JM |
1274 | reiserfs_warning(s, "reiserfs-2503", "journaled " |
1275 | "quota options not supported."); | |
bd4c625c | 1276 | return 0; |
1da177e4 | 1277 | } |
bd4c625c LT |
1278 | #endif |
1279 | } | |
1280 | ||
1281 | #ifdef CONFIG_QUOTA | |
00b44197 JK |
1282 | if (!REISERFS_SB(s)->s_jquota_fmt && !*qfmt |
1283 | && (qf_names[USRQUOTA] || qf_names[GRPQUOTA])) { | |
45b03d5e JM |
1284 | reiserfs_warning(s, "super-6515", |
1285 | "journaled quota format not specified."); | |
1da177e4 | 1286 | return 0; |
1da177e4 | 1287 | } |
c3aa0776 JK |
1288 | if ((!(*mount_options & (1 << REISERFS_USRQUOTA)) && |
1289 | sb_has_quota_loaded(s, USRQUOTA)) || | |
1290 | (!(*mount_options & (1 << REISERFS_GRPQUOTA)) && | |
1291 | sb_has_quota_loaded(s, GRPQUOTA))) { | |
45b03d5e JM |
1292 | reiserfs_warning(s, "super-6516", "quota options must " |
1293 | "be present when quota is turned on."); | |
bd4c625c | 1294 | return 0; |
1da177e4 LT |
1295 | } |
1296 | #endif | |
556a2a45 | 1297 | |
bd4c625c | 1298 | return 1; |
1da177e4 LT |
1299 | } |
1300 | ||
bd4c625c LT |
1301 | static void switch_data_mode(struct super_block *s, unsigned long mode) |
1302 | { | |
1303 | REISERFS_SB(s)->s_mount_opt &= ~((1 << REISERFS_DATA_LOG) | | |
1304 | (1 << REISERFS_DATA_ORDERED) | | |
1305 | (1 << REISERFS_DATA_WRITEBACK)); | |
1306 | REISERFS_SB(s)->s_mount_opt |= (1 << mode); | |
1da177e4 LT |
1307 | } |
1308 | ||
1309 | static void handle_data_mode(struct super_block *s, unsigned long mount_options) | |
1310 | { | |
bd4c625c LT |
1311 | if (mount_options & (1 << REISERFS_DATA_LOG)) { |
1312 | if (!reiserfs_data_log(s)) { | |
1313 | switch_data_mode(s, REISERFS_DATA_LOG); | |
1314 | reiserfs_info(s, "switching to journaled data mode\n"); | |
1315 | } | |
1316 | } else if (mount_options & (1 << REISERFS_DATA_ORDERED)) { | |
1317 | if (!reiserfs_data_ordered(s)) { | |
1318 | switch_data_mode(s, REISERFS_DATA_ORDERED); | |
1319 | reiserfs_info(s, "switching to ordered data mode\n"); | |
1320 | } | |
1321 | } else if (mount_options & (1 << REISERFS_DATA_WRITEBACK)) { | |
1322 | if (!reiserfs_data_writeback(s)) { | |
1323 | switch_data_mode(s, REISERFS_DATA_WRITEBACK); | |
1324 | reiserfs_info(s, "switching to writeback data mode\n"); | |
1325 | } | |
1326 | } | |
1da177e4 LT |
1327 | } |
1328 | ||
bd4c625c LT |
1329 | static void handle_barrier_mode(struct super_block *s, unsigned long bits) |
1330 | { | |
1331 | int flush = (1 << REISERFS_BARRIER_FLUSH); | |
1332 | int none = (1 << REISERFS_BARRIER_NONE); | |
1333 | int all_barrier = flush | none; | |
1334 | ||
1335 | if (bits & all_barrier) { | |
1336 | REISERFS_SB(s)->s_mount_opt &= ~all_barrier; | |
1337 | if (bits & flush) { | |
1338 | REISERFS_SB(s)->s_mount_opt |= flush; | |
1339 | printk("reiserfs: enabling write barrier flush mode\n"); | |
1340 | } else if (bits & none) { | |
1341 | REISERFS_SB(s)->s_mount_opt |= none; | |
1342 | printk("reiserfs: write barriers turned off\n"); | |
1343 | } | |
1344 | } | |
1da177e4 LT |
1345 | } |
1346 | ||
bd4c625c | 1347 | static void handle_attrs(struct super_block *s) |
1da177e4 | 1348 | { |
bd4c625c | 1349 | struct reiserfs_super_block *rs = SB_DISK_SUPER_BLOCK(s); |
1da177e4 | 1350 | |
bd4c625c LT |
1351 | if (reiserfs_attrs(s)) { |
1352 | if (old_format_only(s)) { | |
45b03d5e JM |
1353 | reiserfs_warning(s, "super-6517", "cannot support " |
1354 | "attributes on 3.5.x disk format"); | |
bd4c625c | 1355 | REISERFS_SB(s)->s_mount_opt &= ~(1 << REISERFS_ATTRS); |
1da177e4 LT |
1356 | return; |
1357 | } | |
bd4c625c | 1358 | if (!(le32_to_cpu(rs->s_flags) & reiserfs_attrs_cleared)) { |
45b03d5e JM |
1359 | reiserfs_warning(s, "super-6518", "cannot support " |
1360 | "attributes until flag is set in " | |
1361 | "super-block"); | |
bd4c625c | 1362 | REISERFS_SB(s)->s_mount_opt &= ~(1 << REISERFS_ATTRS); |
1da177e4 LT |
1363 | } |
1364 | } | |
1365 | } | |
1366 | ||
00b44197 JK |
1367 | #ifdef CONFIG_QUOTA |
1368 | static void handle_quota_files(struct super_block *s, char **qf_names, | |
1369 | unsigned int *qfmt) | |
1370 | { | |
1371 | int i; | |
1372 | ||
aca60617 | 1373 | for (i = 0; i < REISERFS_MAXQUOTAS; i++) { |
00b44197 JK |
1374 | if (qf_names[i] != REISERFS_SB(s)->s_qf_names[i]) |
1375 | kfree(REISERFS_SB(s)->s_qf_names[i]); | |
1376 | REISERFS_SB(s)->s_qf_names[i] = qf_names[i]; | |
1377 | } | |
a06d789b JK |
1378 | if (*qfmt) |
1379 | REISERFS_SB(s)->s_jquota_fmt = *qfmt; | |
00b44197 JK |
1380 | } |
1381 | #endif | |
1382 | ||
bd4c625c | 1383 | static int reiserfs_remount(struct super_block *s, int *mount_flags, char *arg) |
1da177e4 | 1384 | { |
bd4c625c LT |
1385 | struct reiserfs_super_block *rs; |
1386 | struct reiserfs_transaction_handle th; | |
1387 | unsigned long blocks; | |
1388 | unsigned long mount_options = REISERFS_SB(s)->s_mount_opt; | |
1389 | unsigned long safe_mask = 0; | |
1390 | unsigned int commit_max_age = (unsigned int)-1; | |
1391 | struct reiserfs_journal *journal = SB_JOURNAL(s); | |
cdf6ccc8 | 1392 | char *new_opts = kstrdup(arg, GFP_KERNEL); |
bd4c625c | 1393 | int err; |
aca60617 | 1394 | char *qf_names[REISERFS_MAXQUOTAS]; |
00b44197 | 1395 | unsigned int qfmt = 0; |
1da177e4 | 1396 | #ifdef CONFIG_QUOTA |
bd4c625c | 1397 | int i; |
8ebc4232 | 1398 | #endif |
00b44197 | 1399 | |
02b9984d | 1400 | sync_filesystem(s); |
8ebc4232 | 1401 | reiserfs_write_lock(s); |
00b44197 | 1402 | |
8ebc4232 | 1403 | #ifdef CONFIG_QUOTA |
00b44197 | 1404 | memcpy(qf_names, REISERFS_SB(s)->s_qf_names, sizeof(qf_names)); |
1da177e4 LT |
1405 | #endif |
1406 | ||
bd4c625c | 1407 | rs = SB_DISK_SUPER_BLOCK(s); |
1da177e4 | 1408 | |
bd4c625c | 1409 | if (!reiserfs_parse_options |
00b44197 JK |
1410 | (s, arg, &mount_options, &blocks, NULL, &commit_max_age, |
1411 | qf_names, &qfmt)) { | |
1da177e4 | 1412 | #ifdef CONFIG_QUOTA |
aca60617 | 1413 | for (i = 0; i < REISERFS_MAXQUOTAS; i++) |
00b44197 JK |
1414 | if (qf_names[i] != REISERFS_SB(s)->s_qf_names[i]) |
1415 | kfree(qf_names[i]); | |
1da177e4 | 1416 | #endif |
cdf6ccc8 | 1417 | err = -EINVAL; |
4c05141d | 1418 | goto out_err_unlock; |
bd4c625c | 1419 | } |
00b44197 JK |
1420 | #ifdef CONFIG_QUOTA |
1421 | handle_quota_files(s, qf_names, &qfmt); | |
1422 | #endif | |
bd4c625c LT |
1423 | |
1424 | handle_attrs(s); | |
1425 | ||
1426 | /* Add options that are safe here */ | |
1427 | safe_mask |= 1 << REISERFS_SMALLTAIL; | |
1428 | safe_mask |= 1 << REISERFS_LARGETAIL; | |
1429 | safe_mask |= 1 << REISERFS_NO_BORDER; | |
1430 | safe_mask |= 1 << REISERFS_NO_UNHASHED_RELOCATION; | |
1431 | safe_mask |= 1 << REISERFS_HASHED_RELOCATION; | |
1432 | safe_mask |= 1 << REISERFS_TEST4; | |
1433 | safe_mask |= 1 << REISERFS_ATTRS; | |
1434 | safe_mask |= 1 << REISERFS_XATTRS_USER; | |
1435 | safe_mask |= 1 << REISERFS_POSIXACL; | |
1436 | safe_mask |= 1 << REISERFS_BARRIER_FLUSH; | |
1437 | safe_mask |= 1 << REISERFS_BARRIER_NONE; | |
1438 | safe_mask |= 1 << REISERFS_ERROR_RO; | |
1439 | safe_mask |= 1 << REISERFS_ERROR_CONTINUE; | |
1440 | safe_mask |= 1 << REISERFS_ERROR_PANIC; | |
c3aa0776 JK |
1441 | safe_mask |= 1 << REISERFS_USRQUOTA; |
1442 | safe_mask |= 1 << REISERFS_GRPQUOTA; | |
bd4c625c | 1443 | |
098297b2 JM |
1444 | /* |
1445 | * Update the bitmask, taking care to keep | |
1446 | * the bits we're not allowed to change here | |
1447 | */ | |
bd4c625c LT |
1448 | REISERFS_SB(s)->s_mount_opt = |
1449 | (REISERFS_SB(s)-> | |
1450 | s_mount_opt & ~safe_mask) | (mount_options & safe_mask); | |
1451 | ||
1452 | if (commit_max_age != 0 && commit_max_age != (unsigned int)-1) { | |
1453 | journal->j_max_commit_age = commit_max_age; | |
1454 | journal->j_max_trans_age = commit_max_age; | |
1455 | } else if (commit_max_age == 0) { | |
1456 | /* 0 means restore defaults. */ | |
1457 | journal->j_max_commit_age = journal->j_default_max_commit_age; | |
1458 | journal->j_max_trans_age = JOURNAL_MAX_TRANS_AGE; | |
1459 | } | |
1460 | ||
1461 | if (blocks) { | |
cdf6ccc8 MS |
1462 | err = reiserfs_resize(s, blocks); |
1463 | if (err != 0) | |
4c05141d | 1464 | goto out_err_unlock; |
bd4c625c LT |
1465 | } |
1466 | ||
1467 | if (*mount_flags & MS_RDONLY) { | |
4c05141d | 1468 | reiserfs_write_unlock(s); |
bd4c625c LT |
1469 | reiserfs_xattr_init(s, *mount_flags); |
1470 | /* remount read-only */ | |
1471 | if (s->s_flags & MS_RDONLY) | |
1472 | /* it is read-only already */ | |
4c05141d | 1473 | goto out_ok_unlocked; |
c79d967d | 1474 | |
0f0dd62f CH |
1475 | err = dquot_suspend(s, -1); |
1476 | if (err < 0) | |
c79d967d | 1477 | goto out_err; |
c79d967d | 1478 | |
bd4c625c LT |
1479 | /* try to remount file system with read-only permissions */ |
1480 | if (sb_umount_state(rs) == REISERFS_VALID_FS | |
1481 | || REISERFS_SB(s)->s_mount_state != REISERFS_VALID_FS) { | |
4c05141d | 1482 | goto out_ok_unlocked; |
bd4c625c LT |
1483 | } |
1484 | ||
4c05141d JM |
1485 | reiserfs_write_lock(s); |
1486 | ||
bd4c625c LT |
1487 | err = journal_begin(&th, s, 10); |
1488 | if (err) | |
4c05141d | 1489 | goto out_err_unlock; |
bd4c625c LT |
1490 | |
1491 | /* Mounting a rw partition read-only. */ | |
1492 | reiserfs_prepare_for_journal(s, SB_BUFFER_WITH_SB(s), 1); | |
1493 | set_sb_umount_state(rs, REISERFS_SB(s)->s_mount_state); | |
09f1b80b | 1494 | journal_mark_dirty(&th, SB_BUFFER_WITH_SB(s)); |
bd4c625c LT |
1495 | } else { |
1496 | /* remount read-write */ | |
1497 | if (!(s->s_flags & MS_RDONLY)) { | |
4c05141d | 1498 | reiserfs_write_unlock(s); |
bd4c625c | 1499 | reiserfs_xattr_init(s, *mount_flags); |
4c05141d | 1500 | goto out_ok_unlocked; /* We are read-write already */ |
bd4c625c LT |
1501 | } |
1502 | ||
cdf6ccc8 MS |
1503 | if (reiserfs_is_journal_aborted(journal)) { |
1504 | err = journal->j_errno; | |
4c05141d | 1505 | goto out_err_unlock; |
cdf6ccc8 | 1506 | } |
bd4c625c LT |
1507 | |
1508 | handle_data_mode(s, mount_options); | |
1509 | handle_barrier_mode(s, mount_options); | |
1510 | REISERFS_SB(s)->s_mount_state = sb_umount_state(rs); | |
098297b2 JM |
1511 | |
1512 | /* now it is safe to call journal_begin */ | |
1513 | s->s_flags &= ~MS_RDONLY; | |
bd4c625c LT |
1514 | err = journal_begin(&th, s, 10); |
1515 | if (err) | |
4c05141d | 1516 | goto out_err_unlock; |
bd4c625c LT |
1517 | |
1518 | /* Mount a partition which is read-only, read-write */ | |
1519 | reiserfs_prepare_for_journal(s, SB_BUFFER_WITH_SB(s), 1); | |
1520 | REISERFS_SB(s)->s_mount_state = sb_umount_state(rs); | |
1521 | s->s_flags &= ~MS_RDONLY; | |
1522 | set_sb_umount_state(rs, REISERFS_ERROR_FS); | |
702d21c6 JM |
1523 | if (!old_format_only(s)) |
1524 | set_sb_mnt_count(rs, sb_mnt_count(rs) + 1); | |
bd4c625c | 1525 | /* mark_buffer_dirty (SB_BUFFER_WITH_SB (s), 1); */ |
09f1b80b | 1526 | journal_mark_dirty(&th, SB_BUFFER_WITH_SB(s)); |
bd4c625c LT |
1527 | REISERFS_SB(s)->s_mount_state = REISERFS_VALID_FS; |
1528 | } | |
1529 | /* this will force a full flush of all journal lists */ | |
1530 | SB_JOURNAL(s)->j_must_wait = 1; | |
58d85426 | 1531 | err = journal_end(&th); |
bd4c625c | 1532 | if (err) |
4c05141d | 1533 | goto out_err_unlock; |
bd4c625c | 1534 | |
4c05141d | 1535 | reiserfs_write_unlock(s); |
bd4c625c | 1536 | if (!(*mount_flags & MS_RDONLY)) { |
0f0dd62f | 1537 | dquot_resume(s, -1); |
3bb3e1fc | 1538 | reiserfs_write_lock(s); |
bd4c625c | 1539 | finish_unfinished(s); |
4c05141d | 1540 | reiserfs_write_unlock(s); |
bd4c625c LT |
1541 | reiserfs_xattr_init(s, *mount_flags); |
1542 | } | |
1543 | ||
4c05141d | 1544 | out_ok_unlocked: |
2a32cebd | 1545 | replace_mount_options(s, new_opts); |
bd4c625c | 1546 | return 0; |
cdf6ccc8 | 1547 | |
4c05141d | 1548 | out_err_unlock: |
3bb3e1fc | 1549 | reiserfs_write_unlock(s); |
cdf6ccc8 MS |
1550 | out_err: |
1551 | kfree(new_opts); | |
1552 | return err; | |
1da177e4 LT |
1553 | } |
1554 | ||
bd4c625c | 1555 | static int read_super_block(struct super_block *s, int offset) |
1da177e4 | 1556 | { |
bd4c625c LT |
1557 | struct buffer_head *bh; |
1558 | struct reiserfs_super_block *rs; | |
1559 | int fs_blocksize; | |
1da177e4 | 1560 | |
bd4c625c LT |
1561 | bh = sb_bread(s, offset / s->s_blocksize); |
1562 | if (!bh) { | |
45b03d5e | 1563 | reiserfs_warning(s, "sh-2006", |
bd4c625c | 1564 | "bread failed (dev %s, block %lu, size %lu)", |
2ccdc413 | 1565 | s->s_id, offset / s->s_blocksize, |
bd4c625c LT |
1566 | s->s_blocksize); |
1567 | return 1; | |
1568 | } | |
1da177e4 | 1569 | |
bd4c625c LT |
1570 | rs = (struct reiserfs_super_block *)bh->b_data; |
1571 | if (!is_any_reiserfs_magic_string(rs)) { | |
1572 | brelse(bh); | |
1573 | return 1; | |
1574 | } | |
098297b2 JM |
1575 | /* |
1576 | * ok, reiserfs signature (old or new) found in at the given offset | |
1577 | */ | |
bd4c625c LT |
1578 | fs_blocksize = sb_blocksize(rs); |
1579 | brelse(bh); | |
1580 | sb_set_blocksize(s, fs_blocksize); | |
1da177e4 | 1581 | |
bd4c625c LT |
1582 | bh = sb_bread(s, offset / s->s_blocksize); |
1583 | if (!bh) { | |
45b03d5e JM |
1584 | reiserfs_warning(s, "sh-2007", |
1585 | "bread failed (dev %s, block %lu, size %lu)", | |
2ccdc413 | 1586 | s->s_id, offset / s->s_blocksize, |
bd4c625c LT |
1587 | s->s_blocksize); |
1588 | return 1; | |
1589 | } | |
1da177e4 | 1590 | |
bd4c625c LT |
1591 | rs = (struct reiserfs_super_block *)bh->b_data; |
1592 | if (sb_blocksize(rs) != s->s_blocksize) { | |
45b03d5e | 1593 | reiserfs_warning(s, "sh-2011", "can't find a reiserfs " |
53872ed0 | 1594 | "filesystem on (dev %s, block %llu, size %lu)", |
2ccdc413 | 1595 | s->s_id, |
bd4c625c LT |
1596 | (unsigned long long)bh->b_blocknr, |
1597 | s->s_blocksize); | |
1598 | brelse(bh); | |
1599 | return 1; | |
1600 | } | |
1da177e4 | 1601 | |
bd4c625c LT |
1602 | if (rs->s_v1.s_root_block == cpu_to_le32(-1)) { |
1603 | brelse(bh); | |
45b03d5e JM |
1604 | reiserfs_warning(s, "super-6519", "Unfinished reiserfsck " |
1605 | "--rebuild-tree run detected. Please run\n" | |
1606 | "reiserfsck --rebuild-tree and wait for a " | |
1607 | "completion. If that fails\n" | |
bd4c625c LT |
1608 | "get newer reiserfsprogs package"); |
1609 | return 1; | |
1da177e4 | 1610 | } |
1da177e4 | 1611 | |
bd4c625c LT |
1612 | SB_BUFFER_WITH_SB(s) = bh; |
1613 | SB_DISK_SUPER_BLOCK(s) = rs; | |
1614 | ||
098297b2 JM |
1615 | /* |
1616 | * magic is of non-standard journal filesystem, look at s_version to | |
1617 | * find which format is in use | |
1618 | */ | |
bd4c625c | 1619 | if (is_reiserfs_jr(rs)) { |
bd4c625c | 1620 | if (sb_version(rs) == REISERFS_VERSION_2) |
1d889d99 JM |
1621 | reiserfs_info(s, "found reiserfs format \"3.6\"" |
1622 | " with non-standard journal\n"); | |
bd4c625c | 1623 | else if (sb_version(rs) == REISERFS_VERSION_1) |
1d889d99 JM |
1624 | reiserfs_info(s, "found reiserfs format \"3.5\"" |
1625 | " with non-standard journal\n"); | |
bd4c625c | 1626 | else { |
45b03d5e JM |
1627 | reiserfs_warning(s, "sh-2012", "found unknown " |
1628 | "format \"%u\" of reiserfs with " | |
1629 | "non-standard magic", sb_version(rs)); | |
bd4c625c LT |
1630 | return 1; |
1631 | } | |
1632 | } else | |
098297b2 JM |
1633 | /* |
1634 | * s_version of standard format may contain incorrect | |
1635 | * information, so we just look at the magic string | |
1636 | */ | |
bd4c625c LT |
1637 | reiserfs_info(s, |
1638 | "found reiserfs format \"%s\" with standard journal\n", | |
1639 | is_reiserfs_3_5(rs) ? "3.5" : "3.6"); | |
1640 | ||
1641 | s->s_op = &reiserfs_sops; | |
1642 | s->s_export_op = &reiserfs_export_ops; | |
1da177e4 | 1643 | #ifdef CONFIG_QUOTA |
bd4c625c LT |
1644 | s->s_qcop = &reiserfs_qctl_operations; |
1645 | s->dq_op = &reiserfs_quota_operations; | |
53873638 | 1646 | s->s_quota_types = QTYPE_MASK_USR | QTYPE_MASK_GRP; |
1da177e4 LT |
1647 | #endif |
1648 | ||
098297b2 JM |
1649 | /* |
1650 | * new format is limited by the 32 bit wide i_blocks field, want to | |
1651 | * be one full block below that. | |
bd4c625c LT |
1652 | */ |
1653 | s->s_maxbytes = (512LL << 32) - s->s_blocksize; | |
1654 | return 0; | |
1da177e4 LT |
1655 | } |
1656 | ||
1da177e4 | 1657 | /* after journal replay, reread all bitmap and super blocks */ |
bd4c625c LT |
1658 | static int reread_meta_blocks(struct super_block *s) |
1659 | { | |
a228bf8f | 1660 | ll_rw_block(READ, 1, &SB_BUFFER_WITH_SB(s)); |
bd4c625c LT |
1661 | wait_on_buffer(SB_BUFFER_WITH_SB(s)); |
1662 | if (!buffer_uptodate(SB_BUFFER_WITH_SB(s))) { | |
45b03d5e | 1663 | reiserfs_warning(s, "reiserfs-2504", "error reading the super"); |
bd4c625c LT |
1664 | return 1; |
1665 | } | |
1da177e4 | 1666 | |
bd4c625c | 1667 | return 0; |
bd4c625c | 1668 | } |
1da177e4 | 1669 | |
098297b2 | 1670 | /* hash detection stuff */ |
1da177e4 | 1671 | |
098297b2 JM |
1672 | /* |
1673 | * if root directory is empty - we set default - Yura's - hash and | |
1674 | * warn about it | |
1675 | * FIXME: we look for only one name in a directory. If tea and yura | |
1676 | * both have the same value - we ask user to send report to the | |
1677 | * mailing list | |
1678 | */ | |
bd4c625c | 1679 | static __u32 find_hash_out(struct super_block *s) |
1da177e4 | 1680 | { |
bd4c625c LT |
1681 | int retval; |
1682 | struct inode *inode; | |
1683 | struct cpu_key key; | |
1684 | INITIALIZE_PATH(path); | |
1685 | struct reiserfs_dir_entry de; | |
c48138c2 | 1686 | struct reiserfs_de_head *deh; |
bd4c625c | 1687 | __u32 hash = DEFAULT_HASH; |
c48138c2 | 1688 | __u32 deh_hashval, teahash, r5hash, yurahash; |
bd4c625c LT |
1689 | |
1690 | inode = s->s_root->d_inode; | |
1691 | ||
c48138c2 JM |
1692 | make_cpu_key(&key, inode, ~0, TYPE_DIRENTRY, 3); |
1693 | retval = search_by_entry_key(s, &key, &path, &de); | |
1694 | if (retval == IO_ERROR) { | |
1695 | pathrelse(&path); | |
1696 | return UNSET_HASH; | |
1697 | } | |
1698 | if (retval == NAME_NOT_FOUND) | |
1699 | de.de_entry_num--; | |
bd4c625c | 1700 | |
c48138c2 JM |
1701 | set_de_name_and_namelen(&de); |
1702 | deh = de.de_deh + de.de_entry_num; | |
1703 | ||
1704 | if (deh_offset(deh) == DOT_DOT_OFFSET) { | |
1705 | /* allow override in this case */ | |
1706 | if (reiserfs_rupasov_hash(s)) | |
bd4c625c | 1707 | hash = YURA_HASH; |
c48138c2 JM |
1708 | reiserfs_info(s, "FS seems to be empty, autodetect is using the default hash\n"); |
1709 | goto out; | |
1710 | } | |
bd4c625c | 1711 | |
c48138c2 JM |
1712 | deh_hashval = GET_HASH_VALUE(deh_offset(deh)); |
1713 | r5hash = GET_HASH_VALUE(r5_hash(de.de_name, de.de_namelen)); | |
1714 | teahash = GET_HASH_VALUE(keyed_hash(de.de_name, de.de_namelen)); | |
1715 | yurahash = GET_HASH_VALUE(yura_hash(de.de_name, de.de_namelen)); | |
1716 | ||
1717 | if ((teahash == r5hash && deh_hashval == r5hash) || | |
1718 | (teahash == yurahash && deh_hashval == yurahash) || | |
1719 | (r5hash == yurahash && deh_hashval == yurahash)) { | |
1720 | reiserfs_warning(s, "reiserfs-2506", | |
1721 | "Unable to automatically detect hash " | |
1722 | "function. Please mount with -o " | |
1723 | "hash={tea,rupasov,r5}"); | |
1724 | hash = UNSET_HASH; | |
1725 | goto out; | |
1726 | } | |
1727 | ||
1728 | if (deh_hashval == yurahash) | |
1729 | hash = YURA_HASH; | |
1730 | else if (deh_hashval == teahash) | |
1731 | hash = TEA_HASH; | |
1732 | else if (deh_hashval == r5hash) | |
1733 | hash = R5_HASH; | |
1734 | else { | |
1735 | reiserfs_warning(s, "reiserfs-2506", | |
1736 | "Unrecognised hash function"); | |
1737 | hash = UNSET_HASH; | |
1738 | } | |
1739 | out: | |
bd4c625c LT |
1740 | pathrelse(&path); |
1741 | return hash; | |
1da177e4 LT |
1742 | } |
1743 | ||
098297b2 | 1744 | /* finds out which hash names are sorted with */ |
bd4c625c | 1745 | static int what_hash(struct super_block *s) |
1da177e4 | 1746 | { |
bd4c625c LT |
1747 | __u32 code; |
1748 | ||
1749 | code = sb_hash_function_code(SB_DISK_SUPER_BLOCK(s)); | |
1750 | ||
098297b2 JM |
1751 | /* |
1752 | * reiserfs_hash_detect() == true if any of the hash mount options | |
1753 | * were used. We must check them to make sure the user isn't | |
1754 | * using a bad hash value | |
bd4c625c LT |
1755 | */ |
1756 | if (code == UNSET_HASH || reiserfs_hash_detect(s)) | |
1757 | code = find_hash_out(s); | |
1758 | ||
1759 | if (code != UNSET_HASH && reiserfs_hash_detect(s)) { | |
098297b2 JM |
1760 | /* |
1761 | * detection has found the hash, and we must check against the | |
1762 | * mount options | |
bd4c625c LT |
1763 | */ |
1764 | if (reiserfs_rupasov_hash(s) && code != YURA_HASH) { | |
45b03d5e JM |
1765 | reiserfs_warning(s, "reiserfs-2507", |
1766 | "Error, %s hash detected, " | |
bd4c625c LT |
1767 | "unable to force rupasov hash", |
1768 | reiserfs_hashname(code)); | |
1769 | code = UNSET_HASH; | |
1770 | } else if (reiserfs_tea_hash(s) && code != TEA_HASH) { | |
45b03d5e JM |
1771 | reiserfs_warning(s, "reiserfs-2508", |
1772 | "Error, %s hash detected, " | |
bd4c625c LT |
1773 | "unable to force tea hash", |
1774 | reiserfs_hashname(code)); | |
1775 | code = UNSET_HASH; | |
1776 | } else if (reiserfs_r5_hash(s) && code != R5_HASH) { | |
45b03d5e JM |
1777 | reiserfs_warning(s, "reiserfs-2509", |
1778 | "Error, %s hash detected, " | |
bd4c625c LT |
1779 | "unable to force r5 hash", |
1780 | reiserfs_hashname(code)); | |
1781 | code = UNSET_HASH; | |
1782 | } | |
1783 | } else { | |
098297b2 JM |
1784 | /* |
1785 | * find_hash_out was not called or | |
1786 | * could not determine the hash | |
1787 | */ | |
bd4c625c LT |
1788 | if (reiserfs_rupasov_hash(s)) { |
1789 | code = YURA_HASH; | |
1790 | } else if (reiserfs_tea_hash(s)) { | |
1791 | code = TEA_HASH; | |
1792 | } else if (reiserfs_r5_hash(s)) { | |
1793 | code = R5_HASH; | |
1794 | } | |
1795 | } | |
1796 | ||
098297b2 JM |
1797 | /* |
1798 | * if we are mounted RW, and we have a new valid hash code, update | |
1799 | * the super | |
bd4c625c LT |
1800 | */ |
1801 | if (code != UNSET_HASH && | |
1802 | !(s->s_flags & MS_RDONLY) && | |
1803 | code != sb_hash_function_code(SB_DISK_SUPER_BLOCK(s))) { | |
1804 | set_sb_hash_function_code(SB_DISK_SUPER_BLOCK(s), code); | |
1805 | } | |
1806 | return code; | |
1da177e4 LT |
1807 | } |
1808 | ||
098297b2 | 1809 | /* return pointer to appropriate function */ |
bd4c625c | 1810 | static hashf_t hash_function(struct super_block *s) |
1da177e4 | 1811 | { |
bd4c625c LT |
1812 | switch (what_hash(s)) { |
1813 | case TEA_HASH: | |
1814 | reiserfs_info(s, "Using tea hash to sort names\n"); | |
1815 | return keyed_hash; | |
1816 | case YURA_HASH: | |
1817 | reiserfs_info(s, "Using rupasov hash to sort names\n"); | |
1818 | return yura_hash; | |
1819 | case R5_HASH: | |
1820 | reiserfs_info(s, "Using r5 hash to sort names\n"); | |
1821 | return r5_hash; | |
1822 | } | |
1823 | return NULL; | |
1da177e4 LT |
1824 | } |
1825 | ||
098297b2 | 1826 | /* this is used to set up correct value for old partitions */ |
bd4c625c | 1827 | static int function2code(hashf_t func) |
1da177e4 | 1828 | { |
bd4c625c LT |
1829 | if (func == keyed_hash) |
1830 | return TEA_HASH; | |
1831 | if (func == yura_hash) | |
1832 | return YURA_HASH; | |
1833 | if (func == r5_hash) | |
1834 | return R5_HASH; | |
1da177e4 | 1835 | |
098297b2 | 1836 | BUG(); /* should never happen */ |
1da177e4 | 1837 | |
bd4c625c | 1838 | return 0; |
1da177e4 LT |
1839 | } |
1840 | ||
45b03d5e | 1841 | #define SWARN(silent, s, id, ...) \ |
1da177e4 | 1842 | if (!(silent)) \ |
45b03d5e | 1843 | reiserfs_warning(s, id, __VA_ARGS__) |
1da177e4 | 1844 | |
bd4c625c | 1845 | static int reiserfs_fill_super(struct super_block *s, void *data, int silent) |
1da177e4 | 1846 | { |
bd4c625c | 1847 | struct inode *root_inode; |
bd4c625c LT |
1848 | struct reiserfs_transaction_handle th; |
1849 | int old_format = 0; | |
1850 | unsigned long blocks; | |
1851 | unsigned int commit_max_age = 0; | |
1852 | int jinit_done = 0; | |
1853 | struct reiserfs_iget_args args; | |
1854 | struct reiserfs_super_block *rs; | |
1855 | char *jdev_name; | |
1856 | struct reiserfs_sb_info *sbi; | |
1857 | int errval = -EINVAL; | |
aca60617 | 1858 | char *qf_names[REISERFS_MAXQUOTAS] = {}; |
00b44197 | 1859 | unsigned int qfmt = 0; |
bd4c625c | 1860 | |
cdf6ccc8 MS |
1861 | save_mount_options(s, data); |
1862 | ||
01afb213 | 1863 | sbi = kzalloc(sizeof(struct reiserfs_sb_info), GFP_KERNEL); |
b7b7fa43 JM |
1864 | if (!sbi) |
1865 | return -ENOMEM; | |
bd4c625c | 1866 | s->s_fs_info = sbi; |
bd4c625c | 1867 | /* Set default values for options: non-aggressive tails, RO on errors */ |
efaa33eb AB |
1868 | sbi->s_mount_opt |= (1 << REISERFS_SMALLTAIL); |
1869 | sbi->s_mount_opt |= (1 << REISERFS_ERROR_RO); | |
1870 | sbi->s_mount_opt |= (1 << REISERFS_BARRIER_FLUSH); | |
098297b2 | 1871 | /* no preallocation minimum, be smart in reiserfs_file_write instead */ |
efaa33eb | 1872 | sbi->s_alloc_options.preallocmin = 0; |
bd4c625c | 1873 | /* Preallocate by 16 blocks (17-1) at once */ |
efaa33eb | 1874 | sbi->s_alloc_options.preallocsize = 17; |
bd4c625c LT |
1875 | /* setup default block allocator options */ |
1876 | reiserfs_init_alloc_options(s); | |
1877 | ||
033369d1 AB |
1878 | spin_lock_init(&sbi->old_work_lock); |
1879 | INIT_DELAYED_WORK(&sbi->old_work, flush_old_commits); | |
efaa33eb AB |
1880 | mutex_init(&sbi->lock); |
1881 | sbi->lock_depth = -1; | |
8ebc4232 | 1882 | |
797d9016 JM |
1883 | sbi->commit_wq = alloc_workqueue("reiserfs/%s", WQ_MEM_RECLAIM, 0, |
1884 | s->s_id); | |
1885 | if (!sbi->commit_wq) { | |
1886 | SWARN(silent, s, "", "Cannot allocate commit workqueue"); | |
1887 | errval = -ENOMEM; | |
1888 | goto error_unlocked; | |
1889 | } | |
1890 | ||
bd4c625c LT |
1891 | jdev_name = NULL; |
1892 | if (reiserfs_parse_options | |
a228bf8f | 1893 | (s, (char *)data, &sbi->s_mount_opt, &blocks, &jdev_name, |
00b44197 | 1894 | &commit_max_age, qf_names, &qfmt) == 0) { |
f32485be | 1895 | goto error_unlocked; |
bd4c625c | 1896 | } |
c3aa0776 | 1897 | if (jdev_name && jdev_name[0]) { |
efaa33eb AB |
1898 | sbi->s_jdev = kstrdup(jdev_name, GFP_KERNEL); |
1899 | if (!sbi->s_jdev) { | |
c3aa0776 JK |
1900 | SWARN(silent, s, "", "Cannot allocate memory for " |
1901 | "journal device name"); | |
1902 | goto error; | |
1903 | } | |
1904 | } | |
00b44197 JK |
1905 | #ifdef CONFIG_QUOTA |
1906 | handle_quota_files(s, qf_names, &qfmt); | |
1907 | #endif | |
bd4c625c LT |
1908 | |
1909 | if (blocks) { | |
45b03d5e | 1910 | SWARN(silent, s, "jmacd-7", "resize option for remount only"); |
f32485be | 1911 | goto error_unlocked; |
bd4c625c LT |
1912 | } |
1913 | ||
098297b2 JM |
1914 | /* |
1915 | * try old format (undistributed bitmap, super block in 8-th 1k | |
1916 | * block of a device) | |
1917 | */ | |
bd4c625c LT |
1918 | if (!read_super_block(s, REISERFS_OLD_DISK_OFFSET_IN_BYTES)) |
1919 | old_format = 1; | |
098297b2 JM |
1920 | |
1921 | /* | |
1922 | * try new format (64-th 1k block), which can contain reiserfs | |
1923 | * super block | |
1924 | */ | |
bd4c625c | 1925 | else if (read_super_block(s, REISERFS_DISK_OFFSET_IN_BYTES)) { |
45b03d5e | 1926 | SWARN(silent, s, "sh-2021", "can not find reiserfs on %s", |
2ccdc413 | 1927 | s->s_id); |
f32485be | 1928 | goto error_unlocked; |
bd4c625c LT |
1929 | } |
1930 | ||
1931 | rs = SB_DISK_SUPER_BLOCK(s); | |
098297b2 JM |
1932 | /* |
1933 | * Let's do basic sanity check to verify that underlying device is not | |
1934 | * smaller than the filesystem. If the check fails then abort and | |
1935 | * scream, because bad stuff will happen otherwise. | |
1936 | */ | |
bd4c625c LT |
1937 | if (s->s_bdev && s->s_bdev->bd_inode |
1938 | && i_size_read(s->s_bdev->bd_inode) < | |
1939 | sb_block_count(rs) * sb_blocksize(rs)) { | |
45b03d5e JM |
1940 | SWARN(silent, s, "", "Filesystem cannot be " |
1941 | "mounted because it is bigger than the device"); | |
1942 | SWARN(silent, s, "", "You may need to run fsck " | |
1943 | "or increase size of your LVM partition"); | |
1944 | SWARN(silent, s, "", "Or may be you forgot to " | |
1945 | "reboot after fdisk when it told you to"); | |
f32485be | 1946 | goto error_unlocked; |
bd4c625c LT |
1947 | } |
1948 | ||
1949 | sbi->s_mount_state = SB_REISERFS_STATE(s); | |
1950 | sbi->s_mount_state = REISERFS_VALID_FS; | |
1951 | ||
6f01046b | 1952 | if ((errval = reiserfs_init_bitmap_cache(s))) { |
45b03d5e | 1953 | SWARN(silent, s, "jmacd-8", "unable to read bitmap"); |
f32485be | 1954 | goto error_unlocked; |
bd4c625c | 1955 | } |
f32485be | 1956 | |
d2c89a42 | 1957 | errval = -EINVAL; |
1da177e4 | 1958 | #ifdef CONFIG_REISERFS_CHECK |
45b03d5e JM |
1959 | SWARN(silent, s, "", "CONFIG_REISERFS_CHECK is set ON"); |
1960 | SWARN(silent, s, "", "- it is slow mode for debugging."); | |
1da177e4 LT |
1961 | #endif |
1962 | ||
bd4c625c LT |
1963 | /* make data=ordered the default */ |
1964 | if (!reiserfs_data_log(s) && !reiserfs_data_ordered(s) && | |
1965 | !reiserfs_data_writeback(s)) { | |
efaa33eb | 1966 | sbi->s_mount_opt |= (1 << REISERFS_DATA_ORDERED); |
bd4c625c LT |
1967 | } |
1968 | ||
1969 | if (reiserfs_data_log(s)) { | |
1970 | reiserfs_info(s, "using journaled data mode\n"); | |
1971 | } else if (reiserfs_data_ordered(s)) { | |
1972 | reiserfs_info(s, "using ordered data mode\n"); | |
1973 | } else { | |
1974 | reiserfs_info(s, "using writeback data mode\n"); | |
1975 | } | |
1976 | if (reiserfs_barrier_flush(s)) { | |
1977 | printk("reiserfs: using flush barriers\n"); | |
1978 | } | |
f32485be | 1979 | |
37c69b98 FW |
1980 | if (journal_init(s, jdev_name, old_format, commit_max_age)) { |
1981 | SWARN(silent, s, "sh-2022", | |
1982 | "unable to initialize journal space"); | |
1983 | goto error_unlocked; | |
1984 | } else { | |
098297b2 JM |
1985 | /* |
1986 | * once this is set, journal_release must be called | |
1987 | * if we error out of the mount | |
1988 | */ | |
1989 | jinit_done = 1; | |
37c69b98 FW |
1990 | } |
1991 | ||
bd4c625c | 1992 | if (reread_meta_blocks(s)) { |
45b03d5e JM |
1993 | SWARN(silent, s, "jmacd-9", |
1994 | "unable to reread meta blocks after journal init"); | |
9b467e6e | 1995 | goto error_unlocked; |
bd4c625c LT |
1996 | } |
1997 | ||
1998 | if (replay_only(s)) | |
9b467e6e | 1999 | goto error_unlocked; |
bd4c625c LT |
2000 | |
2001 | if (bdev_read_only(s->s_bdev) && !(s->s_flags & MS_RDONLY)) { | |
45b03d5e JM |
2002 | SWARN(silent, s, "clm-7000", |
2003 | "Detected readonly device, marking FS readonly"); | |
bd4c625c LT |
2004 | s->s_flags |= MS_RDONLY; |
2005 | } | |
2006 | args.objectid = REISERFS_ROOT_OBJECTID; | |
2007 | args.dirid = REISERFS_ROOT_PARENT_OBJECTID; | |
2008 | root_inode = | |
2009 | iget5_locked(s, REISERFS_ROOT_OBJECTID, reiserfs_find_actor, | |
a228bf8f | 2010 | reiserfs_init_locked_inode, (void *)&args); |
bd4c625c | 2011 | if (!root_inode) { |
45b03d5e | 2012 | SWARN(silent, s, "jmacd-10", "get root inode failed"); |
9b467e6e | 2013 | goto error_unlocked; |
bd4c625c LT |
2014 | } |
2015 | ||
9b467e6e FW |
2016 | /* |
2017 | * This path assumed to be called with the BKL in the old times. | |
2018 | * Now we have inherited the big reiserfs lock from it and many | |
2019 | * reiserfs helpers called in the mount path and elsewhere require | |
2020 | * this lock to be held even if it's not always necessary. Let's be | |
2021 | * conservative and hold it early. The window can be reduced after | |
2022 | * careful review of the code. | |
2023 | */ | |
2024 | reiserfs_write_lock(s); | |
2025 | ||
bd4c625c LT |
2026 | if (root_inode->i_state & I_NEW) { |
2027 | reiserfs_read_locked_inode(root_inode, &args); | |
2028 | unlock_new_inode(root_inode); | |
2029 | } | |
2030 | ||
48fde701 AV |
2031 | s->s_root = d_make_root(root_inode); |
2032 | if (!s->s_root) | |
bd4c625c | 2033 | goto error; |
098297b2 | 2034 | /* define and initialize hash function */ |
bd4c625c LT |
2035 | sbi->s_hash_function = hash_function(s); |
2036 | if (sbi->s_hash_function == NULL) { | |
2037 | dput(s->s_root); | |
2038 | s->s_root = NULL; | |
2039 | goto error; | |
2040 | } | |
2041 | ||
2042 | if (is_reiserfs_3_5(rs) | |
2043 | || (is_reiserfs_jr(rs) && SB_VERSION(s) == REISERFS_VERSION_1)) | |
a228bf8f | 2044 | set_bit(REISERFS_3_5, &sbi->s_properties); |
e1fabd3c | 2045 | else if (old_format) |
a228bf8f | 2046 | set_bit(REISERFS_OLD_FORMAT, &sbi->s_properties); |
bd4c625c | 2047 | else |
a228bf8f | 2048 | set_bit(REISERFS_3_6, &sbi->s_properties); |
bd4c625c LT |
2049 | |
2050 | if (!(s->s_flags & MS_RDONLY)) { | |
2051 | ||
2052 | errval = journal_begin(&th, s, 1); | |
2053 | if (errval) { | |
2054 | dput(s->s_root); | |
2055 | s->s_root = NULL; | |
2056 | goto error; | |
2057 | } | |
2058 | reiserfs_prepare_for_journal(s, SB_BUFFER_WITH_SB(s), 1); | |
2059 | ||
2060 | set_sb_umount_state(rs, REISERFS_ERROR_FS); | |
2061 | set_sb_fs_state(rs, 0); | |
2062 | ||
098297b2 JM |
2063 | /* |
2064 | * Clear out s_bmap_nr if it would wrap. We can handle this | |
cb680c1b JM |
2065 | * case, but older revisions can't. This will cause the |
2066 | * file system to fail mount on those older implementations, | |
098297b2 JM |
2067 | * avoiding corruption. -jeffm |
2068 | */ | |
cb680c1b JM |
2069 | if (bmap_would_wrap(reiserfs_bmap_count(s)) && |
2070 | sb_bmap_nr(rs) != 0) { | |
45b03d5e | 2071 | reiserfs_warning(s, "super-2030", "This file system " |
cb680c1b JM |
2072 | "claims to use %u bitmap blocks in " |
2073 | "its super block, but requires %u. " | |
2074 | "Clearing to zero.", sb_bmap_nr(rs), | |
2075 | reiserfs_bmap_count(s)); | |
2076 | ||
2077 | set_sb_bmap_nr(rs, 0); | |
2078 | } | |
2079 | ||
bd4c625c | 2080 | if (old_format_only(s)) { |
098297b2 JM |
2081 | /* |
2082 | * filesystem of format 3.5 either with standard | |
2083 | * or non-standard journal | |
2084 | */ | |
bd4c625c LT |
2085 | if (convert_reiserfs(s)) { |
2086 | /* and -o conv is given */ | |
2087 | if (!silent) | |
2088 | reiserfs_info(s, | |
2089 | "converting 3.5 filesystem to the 3.6 format"); | |
2090 | ||
2091 | if (is_reiserfs_3_5(rs)) | |
098297b2 JM |
2092 | /* |
2093 | * put magic string of 3.6 format. | |
2094 | * 2.2 will not be able to | |
2095 | * mount this filesystem anymore | |
2096 | */ | |
bd4c625c LT |
2097 | memcpy(rs->s_v1.s_magic, |
2098 | reiserfs_3_6_magic_string, | |
2099 | sizeof | |
2100 | (reiserfs_3_6_magic_string)); | |
2101 | ||
2102 | set_sb_version(rs, REISERFS_VERSION_2); | |
2103 | reiserfs_convert_objectid_map_v1(s); | |
a228bf8f JM |
2104 | set_bit(REISERFS_3_6, &sbi->s_properties); |
2105 | clear_bit(REISERFS_3_5, &sbi->s_properties); | |
bd4c625c LT |
2106 | } else if (!silent) { |
2107 | reiserfs_info(s, "using 3.5.x disk format\n"); | |
2108 | } | |
702d21c6 JM |
2109 | } else |
2110 | set_sb_mnt_count(rs, sb_mnt_count(rs) + 1); | |
2111 | ||
bd4c625c | 2112 | |
09f1b80b | 2113 | journal_mark_dirty(&th, SB_BUFFER_WITH_SB(s)); |
58d85426 | 2114 | errval = journal_end(&th); |
bd4c625c LT |
2115 | if (errval) { |
2116 | dput(s->s_root); | |
2117 | s->s_root = NULL; | |
2118 | goto error; | |
2119 | } | |
2120 | ||
4c05141d | 2121 | reiserfs_write_unlock(s); |
edcc37a0 AV |
2122 | if ((errval = reiserfs_lookup_privroot(s)) || |
2123 | (errval = reiserfs_xattr_init(s, s->s_flags))) { | |
bd4c625c LT |
2124 | dput(s->s_root); |
2125 | s->s_root = NULL; | |
4c05141d | 2126 | goto error_unlocked; |
bd4c625c | 2127 | } |
4c05141d | 2128 | reiserfs_write_lock(s); |
bd4c625c | 2129 | |
098297b2 JM |
2130 | /* |
2131 | * look for files which were to be removed in previous session | |
2132 | */ | |
bd4c625c LT |
2133 | finish_unfinished(s); |
2134 | } else { | |
2135 | if (old_format_only(s) && !silent) { | |
2136 | reiserfs_info(s, "using 3.5.x disk format\n"); | |
2137 | } | |
2138 | ||
4c05141d | 2139 | reiserfs_write_unlock(s); |
edcc37a0 AV |
2140 | if ((errval = reiserfs_lookup_privroot(s)) || |
2141 | (errval = reiserfs_xattr_init(s, s->s_flags))) { | |
bd4c625c LT |
2142 | dput(s->s_root); |
2143 | s->s_root = NULL; | |
4c05141d | 2144 | goto error_unlocked; |
bd4c625c | 2145 | } |
4c05141d | 2146 | reiserfs_write_lock(s); |
bd4c625c | 2147 | } |
098297b2 JM |
2148 | /* |
2149 | * mark hash in super block: it could be unset. overwrite should be ok | |
2150 | */ | |
bd4c625c LT |
2151 | set_sb_hash_function_code(rs, function2code(sbi->s_hash_function)); |
2152 | ||
2153 | handle_attrs(s); | |
2154 | ||
2155 | reiserfs_proc_info_init(s); | |
2156 | ||
2157 | init_waitqueue_head(&(sbi->s_wait)); | |
2158 | spin_lock_init(&sbi->bitmap_lock); | |
2159 | ||
8ebc4232 FW |
2160 | reiserfs_write_unlock(s); |
2161 | ||
bd4c625c LT |
2162 | return (0); |
2163 | ||
00b44197 | 2164 | error: |
f32485be FW |
2165 | reiserfs_write_unlock(s); |
2166 | ||
2167 | error_unlocked: | |
2168 | /* kill the commit thread, free journal ram */ | |
2169 | if (jinit_done) { | |
2170 | reiserfs_write_lock(s); | |
bd4c625c | 2171 | journal_release_error(NULL, s); |
f32485be | 2172 | reiserfs_write_unlock(s); |
bd4c625c | 2173 | } |
5065227b | 2174 | |
fa0c5540 JS |
2175 | if (sbi->commit_wq) |
2176 | destroy_workqueue(sbi->commit_wq); | |
2177 | ||
033369d1 AB |
2178 | cancel_delayed_work_sync(&REISERFS_SB(s)->old_work); |
2179 | ||
5065227b | 2180 | reiserfs_free_bitmap_cache(s); |
bd4c625c LT |
2181 | if (SB_BUFFER_WITH_SB(s)) |
2182 | brelse(SB_BUFFER_WITH_SB(s)); | |
1da177e4 | 2183 | #ifdef CONFIG_QUOTA |
5065227b JM |
2184 | { |
2185 | int j; | |
aca60617 | 2186 | for (j = 0; j < REISERFS_MAXQUOTAS; j++) |
00b44197 | 2187 | kfree(qf_names[j]); |
bd4c625c | 2188 | } |
1da177e4 | 2189 | #endif |
833d304b | 2190 | kfree(sbi); |
1da177e4 | 2191 | |
bd4c625c LT |
2192 | s->s_fs_info = NULL; |
2193 | return errval; | |
1da177e4 LT |
2194 | } |
2195 | ||
726c3342 | 2196 | static int reiserfs_statfs(struct dentry *dentry, struct kstatfs *buf) |
1da177e4 | 2197 | { |
726c3342 | 2198 | struct reiserfs_super_block *rs = SB_DISK_SUPER_BLOCK(dentry->d_sb); |
bd4c625c LT |
2199 | |
2200 | buf->f_namelen = (REISERFS_MAX_NAME(s->s_blocksize)); | |
2201 | buf->f_bfree = sb_free_blocks(rs); | |
2202 | buf->f_bavail = buf->f_bfree; | |
2203 | buf->f_blocks = sb_block_count(rs) - sb_bmap_nr(rs) - 1; | |
726c3342 | 2204 | buf->f_bsize = dentry->d_sb->s_blocksize; |
bd4c625c LT |
2205 | /* changed to accommodate gcc folks. */ |
2206 | buf->f_type = REISERFS_SUPER_MAGIC; | |
651d0623 CL |
2207 | buf->f_fsid.val[0] = (u32)crc32_le(0, rs->s_uuid, sizeof(rs->s_uuid)/2); |
2208 | buf->f_fsid.val[1] = (u32)crc32_le(0, rs->s_uuid + sizeof(rs->s_uuid)/2, | |
2209 | sizeof(rs->s_uuid)/2); | |
2210 | ||
bd4c625c | 2211 | return 0; |
1da177e4 LT |
2212 | } |
2213 | ||
2214 | #ifdef CONFIG_QUOTA | |
1da177e4 LT |
2215 | static int reiserfs_write_dquot(struct dquot *dquot) |
2216 | { | |
bd4c625c LT |
2217 | struct reiserfs_transaction_handle th; |
2218 | int ret, err; | |
d2d0395f | 2219 | int depth; |
bd4c625c LT |
2220 | |
2221 | reiserfs_write_lock(dquot->dq_sb); | |
2222 | ret = | |
2223 | journal_begin(&th, dquot->dq_sb, | |
2224 | REISERFS_QUOTA_TRANS_BLOCKS(dquot->dq_sb)); | |
2225 | if (ret) | |
2226 | goto out; | |
d2d0395f | 2227 | depth = reiserfs_write_unlock_nested(dquot->dq_sb); |
bd4c625c | 2228 | ret = dquot_commit(dquot); |
d2d0395f | 2229 | reiserfs_write_lock_nested(dquot->dq_sb, depth); |
58d85426 | 2230 | err = journal_end(&th); |
bd4c625c LT |
2231 | if (!ret && err) |
2232 | ret = err; | |
7af11686 | 2233 | out: |
bd4c625c LT |
2234 | reiserfs_write_unlock(dquot->dq_sb); |
2235 | return ret; | |
1da177e4 LT |
2236 | } |
2237 | ||
2238 | static int reiserfs_acquire_dquot(struct dquot *dquot) | |
2239 | { | |
bd4c625c LT |
2240 | struct reiserfs_transaction_handle th; |
2241 | int ret, err; | |
d2d0395f | 2242 | int depth; |
bd4c625c LT |
2243 | |
2244 | reiserfs_write_lock(dquot->dq_sb); | |
2245 | ret = | |
2246 | journal_begin(&th, dquot->dq_sb, | |
2247 | REISERFS_QUOTA_INIT_BLOCKS(dquot->dq_sb)); | |
2248 | if (ret) | |
2249 | goto out; | |
d2d0395f | 2250 | depth = reiserfs_write_unlock_nested(dquot->dq_sb); |
bd4c625c | 2251 | ret = dquot_acquire(dquot); |
d2d0395f | 2252 | reiserfs_write_lock_nested(dquot->dq_sb, depth); |
58d85426 | 2253 | err = journal_end(&th); |
bd4c625c LT |
2254 | if (!ret && err) |
2255 | ret = err; | |
7af11686 | 2256 | out: |
bd4c625c LT |
2257 | reiserfs_write_unlock(dquot->dq_sb); |
2258 | return ret; | |
1da177e4 LT |
2259 | } |
2260 | ||
2261 | static int reiserfs_release_dquot(struct dquot *dquot) | |
2262 | { | |
bd4c625c LT |
2263 | struct reiserfs_transaction_handle th; |
2264 | int ret, err; | |
2265 | ||
2266 | reiserfs_write_lock(dquot->dq_sb); | |
2267 | ret = | |
2268 | journal_begin(&th, dquot->dq_sb, | |
2269 | REISERFS_QUOTA_DEL_BLOCKS(dquot->dq_sb)); | |
7af11686 | 2270 | reiserfs_write_unlock(dquot->dq_sb); |
9c3013e9 JK |
2271 | if (ret) { |
2272 | /* Release dquot anyway to avoid endless cycle in dqput() */ | |
2273 | dquot_release(dquot); | |
bd4c625c | 2274 | goto out; |
9c3013e9 | 2275 | } |
bd4c625c | 2276 | ret = dquot_release(dquot); |
7af11686 | 2277 | reiserfs_write_lock(dquot->dq_sb); |
58d85426 | 2278 | err = journal_end(&th); |
bd4c625c LT |
2279 | if (!ret && err) |
2280 | ret = err; | |
bd4c625c | 2281 | reiserfs_write_unlock(dquot->dq_sb); |
7af11686 | 2282 | out: |
bd4c625c | 2283 | return ret; |
1da177e4 LT |
2284 | } |
2285 | ||
2286 | static int reiserfs_mark_dquot_dirty(struct dquot *dquot) | |
2287 | { | |
4506567b | 2288 | /* Are we journaling quotas? */ |
bd4c625c LT |
2289 | if (REISERFS_SB(dquot->dq_sb)->s_qf_names[USRQUOTA] || |
2290 | REISERFS_SB(dquot->dq_sb)->s_qf_names[GRPQUOTA]) { | |
2291 | dquot_mark_dquot_dirty(dquot); | |
2292 | return reiserfs_write_dquot(dquot); | |
2293 | } else | |
2294 | return dquot_mark_dquot_dirty(dquot); | |
1da177e4 LT |
2295 | } |
2296 | ||
2297 | static int reiserfs_write_info(struct super_block *sb, int type) | |
2298 | { | |
bd4c625c LT |
2299 | struct reiserfs_transaction_handle th; |
2300 | int ret, err; | |
d2d0395f | 2301 | int depth; |
bd4c625c LT |
2302 | |
2303 | /* Data block + inode block */ | |
2304 | reiserfs_write_lock(sb); | |
2305 | ret = journal_begin(&th, sb, 2); | |
2306 | if (ret) | |
2307 | goto out; | |
d2d0395f | 2308 | depth = reiserfs_write_unlock_nested(sb); |
bd4c625c | 2309 | ret = dquot_commit_info(sb, type); |
d2d0395f | 2310 | reiserfs_write_lock_nested(sb, depth); |
58d85426 | 2311 | err = journal_end(&th); |
bd4c625c LT |
2312 | if (!ret && err) |
2313 | ret = err; | |
7af11686 | 2314 | out: |
bd4c625c LT |
2315 | reiserfs_write_unlock(sb); |
2316 | return ret; | |
1da177e4 LT |
2317 | } |
2318 | ||
2319 | /* | |
84de856e | 2320 | * Turn on quotas during mount time - we need to find the quota file and such... |
1da177e4 LT |
2321 | */ |
2322 | static int reiserfs_quota_on_mount(struct super_block *sb, int type) | |
2323 | { | |
287a8095 CH |
2324 | return dquot_quota_on_mount(sb, REISERFS_SB(sb)->s_qf_names[type], |
2325 | REISERFS_SB(sb)->s_jquota_fmt, type); | |
1da177e4 LT |
2326 | } |
2327 | ||
2328 | /* | |
2329 | * Standard function to be called on quota_on | |
2330 | */ | |
bd4c625c | 2331 | static int reiserfs_quota_on(struct super_block *sb, int type, int format_id, |
f00c9e44 | 2332 | struct path *path) |
1da177e4 | 2333 | { |
bd4c625c | 2334 | int err; |
d5dee5c3 | 2335 | struct inode *inode; |
5d4f7fdd | 2336 | struct reiserfs_transaction_handle th; |
c3aa0776 | 2337 | int opt = type == USRQUOTA ? REISERFS_USRQUOTA : REISERFS_GRPQUOTA; |
bd4c625c | 2338 | |
b9e06ef2 JK |
2339 | reiserfs_write_lock(sb); |
2340 | if (!(REISERFS_SB(sb)->s_mount_opt & (1 << opt))) { | |
2341 | err = -EINVAL; | |
2342 | goto out; | |
2343 | } | |
307ae18a | 2344 | |
bd4c625c | 2345 | /* Quotafile not on the same filesystem? */ |
d8c9584e | 2346 | if (path->dentry->d_sb != sb) { |
77e69dac AV |
2347 | err = -EXDEV; |
2348 | goto out; | |
bd4c625c | 2349 | } |
f00c9e44 | 2350 | inode = path->dentry->d_inode; |
098297b2 JM |
2351 | /* |
2352 | * We must not pack tails for quota files on reiserfs for quota | |
2353 | * IO to work | |
2354 | */ | |
d5dee5c3 JK |
2355 | if (!(REISERFS_I(inode)->i_flags & i_nopack_mask)) { |
2356 | err = reiserfs_unpack(inode, NULL); | |
2357 | if (err) { | |
45b03d5e JM |
2358 | reiserfs_warning(sb, "super-6520", |
2359 | "Unpacking tail of quota file failed" | |
d5dee5c3 | 2360 | " (%d). Cannot turn on quotas.", err); |
77e69dac AV |
2361 | err = -EINVAL; |
2362 | goto out; | |
d5dee5c3 JK |
2363 | } |
2364 | mark_inode_dirty(inode); | |
bd4c625c | 2365 | } |
5d4f7fdd JK |
2366 | /* Journaling quota? */ |
2367 | if (REISERFS_SB(sb)->s_qf_names[type]) { | |
2368 | /* Quotafile not of fs root? */ | |
f00c9e44 | 2369 | if (path->dentry->d_parent != sb->s_root) |
45b03d5e JM |
2370 | reiserfs_warning(sb, "super-6521", |
2371 | "Quota file not on filesystem root. " | |
bd4c625c | 2372 | "Journalled quota will not work."); |
5d4f7fdd JK |
2373 | } |
2374 | ||
2375 | /* | |
2376 | * When we journal data on quota file, we have to flush journal to see | |
2377 | * all updates to the file when we bypass pagecache... | |
2378 | */ | |
2379 | if (reiserfs_file_data_log(inode)) { | |
2380 | /* Just start temporary transaction and finish it */ | |
2381 | err = journal_begin(&th, sb, 1); | |
2382 | if (err) | |
77e69dac | 2383 | goto out; |
58d85426 | 2384 | err = journal_end_sync(&th); |
5d4f7fdd | 2385 | if (err) |
77e69dac | 2386 | goto out; |
5d4f7fdd | 2387 | } |
b9e06ef2 JK |
2388 | reiserfs_write_unlock(sb); |
2389 | return dquot_quota_on(sb, type, format_id, path); | |
77e69dac | 2390 | out: |
b9e06ef2 | 2391 | reiserfs_write_unlock(sb); |
77e69dac | 2392 | return err; |
1da177e4 LT |
2393 | } |
2394 | ||
098297b2 JM |
2395 | /* |
2396 | * Read data from quotafile - avoid pagecache and such because we cannot afford | |
1da177e4 | 2397 | * acquiring the locks... As quota files are never truncated and quota code |
25985edc | 2398 | * itself serializes the operations (and no one else should touch the files) |
098297b2 JM |
2399 | * we don't have to be afraid of races |
2400 | */ | |
1da177e4 LT |
2401 | static ssize_t reiserfs_quota_read(struct super_block *sb, int type, char *data, |
2402 | size_t len, loff_t off) | |
2403 | { | |
bd4c625c LT |
2404 | struct inode *inode = sb_dqopt(sb)->files[type]; |
2405 | unsigned long blk = off >> sb->s_blocksize_bits; | |
2406 | int err = 0, offset = off & (sb->s_blocksize - 1), tocopy; | |
2407 | size_t toread; | |
2408 | struct buffer_head tmp_bh, *bh; | |
2409 | loff_t i_size = i_size_read(inode); | |
2410 | ||
2411 | if (off > i_size) | |
2412 | return 0; | |
2413 | if (off + len > i_size) | |
2414 | len = i_size - off; | |
2415 | toread = len; | |
2416 | while (toread > 0) { | |
2417 | tocopy = | |
2418 | sb->s_blocksize - offset < | |
2419 | toread ? sb->s_blocksize - offset : toread; | |
2420 | tmp_bh.b_state = 0; | |
098297b2 JM |
2421 | /* |
2422 | * Quota files are without tails so we can safely | |
2423 | * use this function | |
2424 | */ | |
bd4c625c LT |
2425 | reiserfs_write_lock(sb); |
2426 | err = reiserfs_get_block(inode, blk, &tmp_bh, 0); | |
2427 | reiserfs_write_unlock(sb); | |
2428 | if (err) | |
2429 | return err; | |
2430 | if (!buffer_mapped(&tmp_bh)) /* A hole? */ | |
2431 | memset(data, 0, tocopy); | |
2432 | else { | |
2433 | bh = sb_bread(sb, tmp_bh.b_blocknr); | |
2434 | if (!bh) | |
2435 | return -EIO; | |
2436 | memcpy(data, bh->b_data + offset, tocopy); | |
2437 | brelse(bh); | |
2438 | } | |
2439 | offset = 0; | |
2440 | toread -= tocopy; | |
2441 | data += tocopy; | |
2442 | blk++; | |
2443 | } | |
2444 | return len; | |
1da177e4 LT |
2445 | } |
2446 | ||
098297b2 JM |
2447 | /* |
2448 | * Write to quotafile (we know the transaction is already started and has | |
2449 | * enough credits) | |
2450 | */ | |
1da177e4 LT |
2451 | static ssize_t reiserfs_quota_write(struct super_block *sb, int type, |
2452 | const char *data, size_t len, loff_t off) | |
2453 | { | |
bd4c625c LT |
2454 | struct inode *inode = sb_dqopt(sb)->files[type]; |
2455 | unsigned long blk = off >> sb->s_blocksize_bits; | |
2456 | int err = 0, offset = off & (sb->s_blocksize - 1), tocopy; | |
2457 | int journal_quota = REISERFS_SB(sb)->s_qf_names[type] != NULL; | |
2458 | size_t towrite = len; | |
2459 | struct buffer_head tmp_bh, *bh; | |
2460 | ||
9c3013e9 | 2461 | if (!current->journal_info) { |
53872ed0 | 2462 | printk(KERN_WARNING "reiserfs: Quota write (off=%llu, len=%llu) cancelled because transaction is not started.\n", |
9c3013e9 JK |
2463 | (unsigned long long)off, (unsigned long long)len); |
2464 | return -EIO; | |
2465 | } | |
bd4c625c LT |
2466 | while (towrite > 0) { |
2467 | tocopy = sb->s_blocksize - offset < towrite ? | |
2468 | sb->s_blocksize - offset : towrite; | |
2469 | tmp_bh.b_state = 0; | |
361d94a3 | 2470 | reiserfs_write_lock(sb); |
bd4c625c | 2471 | err = reiserfs_get_block(inode, blk, &tmp_bh, GET_BLOCK_CREATE); |
361d94a3 | 2472 | reiserfs_write_unlock(sb); |
bd4c625c LT |
2473 | if (err) |
2474 | goto out; | |
2475 | if (offset || tocopy != sb->s_blocksize) | |
2476 | bh = sb_bread(sb, tmp_bh.b_blocknr); | |
2477 | else | |
2478 | bh = sb_getblk(sb, tmp_bh.b_blocknr); | |
2479 | if (!bh) { | |
2480 | err = -EIO; | |
2481 | goto out; | |
2482 | } | |
2483 | lock_buffer(bh); | |
2484 | memcpy(bh->b_data + offset, data, tocopy); | |
2485 | flush_dcache_page(bh->b_page); | |
2486 | set_buffer_uptodate(bh); | |
2487 | unlock_buffer(bh); | |
361d94a3 | 2488 | reiserfs_write_lock(sb); |
bd4c625c | 2489 | reiserfs_prepare_for_journal(sb, bh, 1); |
09f1b80b | 2490 | journal_mark_dirty(current->journal_info, bh); |
bd4c625c LT |
2491 | if (!journal_quota) |
2492 | reiserfs_add_ordered_list(inode, bh); | |
361d94a3 | 2493 | reiserfs_write_unlock(sb); |
bd4c625c LT |
2494 | brelse(bh); |
2495 | offset = 0; | |
2496 | towrite -= tocopy; | |
2497 | data += tocopy; | |
2498 | blk++; | |
2499 | } | |
9c3013e9 | 2500 | out: |
67f1648d | 2501 | if (len == towrite) |
bd4c625c LT |
2502 | return err; |
2503 | if (inode->i_size < off + len - towrite) | |
2504 | i_size_write(inode, off + len - towrite); | |
2505 | inode->i_version++; | |
2506 | inode->i_mtime = inode->i_ctime = CURRENT_TIME; | |
2507 | mark_inode_dirty(inode); | |
bd4c625c | 2508 | return len - towrite; |
1da177e4 LT |
2509 | } |
2510 | ||
2511 | #endif | |
2512 | ||
152a0836 | 2513 | static struct dentry *get_super_block(struct file_system_type *fs_type, |
454e2398 | 2514 | int flags, const char *dev_name, |
152a0836 | 2515 | void *data) |
1da177e4 | 2516 | { |
152a0836 | 2517 | return mount_bdev(fs_type, flags, dev_name, data, reiserfs_fill_super); |
1da177e4 LT |
2518 | } |
2519 | ||
bd4c625c | 2520 | static int __init init_reiserfs_fs(void) |
1da177e4 LT |
2521 | { |
2522 | int ret; | |
2523 | ||
797d9016 JM |
2524 | ret = init_inodecache(); |
2525 | if (ret) | |
1da177e4 | 2526 | return ret; |
1da177e4 | 2527 | |
bd4c625c | 2528 | reiserfs_proc_info_global_init(); |
1da177e4 | 2529 | |
bd4c625c | 2530 | ret = register_filesystem(&reiserfs_fs_type); |
797d9016 JM |
2531 | if (ret) |
2532 | goto out; | |
1da177e4 | 2533 | |
797d9016 JM |
2534 | return 0; |
2535 | out: | |
bd4c625c LT |
2536 | reiserfs_proc_info_global_done(); |
2537 | destroy_inodecache(); | |
1da177e4 LT |
2538 | |
2539 | return ret; | |
2540 | } | |
2541 | ||
bd4c625c | 2542 | static void __exit exit_reiserfs_fs(void) |
1da177e4 | 2543 | { |
bd4c625c LT |
2544 | reiserfs_proc_info_global_done(); |
2545 | unregister_filesystem(&reiserfs_fs_type); | |
2546 | destroy_inodecache(); | |
1da177e4 LT |
2547 | } |
2548 | ||
2549 | struct file_system_type reiserfs_fs_type = { | |
bd4c625c LT |
2550 | .owner = THIS_MODULE, |
2551 | .name = "reiserfs", | |
152a0836 | 2552 | .mount = get_super_block, |
edc666e2 | 2553 | .kill_sb = reiserfs_kill_sb, |
bd4c625c | 2554 | .fs_flags = FS_REQUIRES_DEV, |
1da177e4 | 2555 | }; |
7f78e035 | 2556 | MODULE_ALIAS_FS("reiserfs"); |
1da177e4 | 2557 | |
bd4c625c LT |
2558 | MODULE_DESCRIPTION("ReiserFS journaled filesystem"); |
2559 | MODULE_AUTHOR("Hans Reiser <reiser@namesys.com>"); | |
2560 | MODULE_LICENSE("GPL"); | |
1da177e4 | 2561 | |
bd4c625c LT |
2562 | module_init(init_reiserfs_fs); |
2563 | module_exit(exit_reiserfs_fs); |