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Commit | Line | Data |
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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> | |
18 | #include <asm/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)) | |
706a5323 | 77 | if (!journal_end_sync(&th, s)) |
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 | ||
103 | if (s->s_flags & MS_RDONLY) | |
104 | return; | |
105 | ||
106 | spin_lock(&sbi->old_work_lock); | |
107 | if (!sbi->work_queued) { | |
108 | delay = msecs_to_jiffies(dirty_writeback_interval * 10); | |
109 | queue_delayed_work(system_long_wq, &sbi->old_work, delay); | |
110 | sbi->work_queued = 1; | |
111 | } | |
112 | spin_unlock(&sbi->old_work_lock); | |
113 | } | |
114 | ||
115 | static void cancel_old_flush(struct super_block *s) | |
116 | { | |
117 | struct reiserfs_sb_info *sbi = REISERFS_SB(s); | |
118 | ||
119 | cancel_delayed_work_sync(&REISERFS_SB(s)->old_work); | |
120 | spin_lock(&sbi->old_work_lock); | |
121 | sbi->work_queued = 0; | |
122 | spin_unlock(&sbi->old_work_lock); | |
123 | } | |
124 | ||
c4be0c1d | 125 | static int reiserfs_freeze(struct super_block *s) |
1da177e4 | 126 | { |
bd4c625c | 127 | struct reiserfs_transaction_handle th; |
033369d1 AB |
128 | |
129 | cancel_old_flush(s); | |
130 | ||
bd4c625c LT |
131 | reiserfs_write_lock(s); |
132 | if (!(s->s_flags & MS_RDONLY)) { | |
133 | int err = journal_begin(&th, s, 1); | |
134 | if (err) { | |
135 | reiserfs_block_writes(&th); | |
136 | } else { | |
137 | reiserfs_prepare_for_journal(s, SB_BUFFER_WITH_SB(s), | |
138 | 1); | |
139 | journal_mark_dirty(&th, s, SB_BUFFER_WITH_SB(s)); | |
140 | reiserfs_block_writes(&th); | |
706a5323 | 141 | journal_end_sync(&th, s); |
bd4c625c LT |
142 | } |
143 | } | |
bd4c625c | 144 | reiserfs_write_unlock(s); |
c4be0c1d | 145 | return 0; |
1da177e4 LT |
146 | } |
147 | ||
c4be0c1d | 148 | static int reiserfs_unfreeze(struct super_block *s) |
bd4c625c LT |
149 | { |
150 | reiserfs_allow_writes(s); | |
c4be0c1d | 151 | return 0; |
1da177e4 LT |
152 | } |
153 | ||
bd4c625c | 154 | extern const struct in_core_key MAX_IN_CORE_KEY; |
1da177e4 | 155 | |
098297b2 JM |
156 | /* |
157 | * this is used to delete "save link" when there are no items of a | |
158 | * file it points to. It can either happen if unlink is completed but | |
159 | * "save unlink" removal, or if file has both unlink and truncate | |
160 | * pending and as unlink completes first (because key of "save link" | |
161 | * protecting unlink is bigger that a key lf "save link" which | |
162 | * protects truncate), so there left no items to make truncate | |
163 | * completion on | |
164 | */ | |
bd4c625c LT |
165 | static int remove_save_link_only(struct super_block *s, |
166 | struct reiserfs_key *key, int oid_free) | |
1da177e4 | 167 | { |
bd4c625c LT |
168 | struct reiserfs_transaction_handle th; |
169 | int err; | |
170 | ||
171 | /* we are going to do one balancing */ | |
172 | err = journal_begin(&th, s, JOURNAL_PER_BALANCE_CNT); | |
173 | if (err) | |
174 | return err; | |
175 | ||
176 | reiserfs_delete_solid_item(&th, NULL, key); | |
177 | if (oid_free) | |
178 | /* removals are protected by direct items */ | |
179 | reiserfs_release_objectid(&th, le32_to_cpu(key->k_objectid)); | |
180 | ||
706a5323 | 181 | return journal_end(&th, s); |
1da177e4 | 182 | } |
bd4c625c | 183 | |
1da177e4 LT |
184 | #ifdef CONFIG_QUOTA |
185 | static int reiserfs_quota_on_mount(struct super_block *, int); | |
186 | #endif | |
bd4c625c | 187 | |
1da177e4 | 188 | /* look for uncompleted unlinks and truncates and complete them */ |
bd4c625c | 189 | static int finish_unfinished(struct super_block *s) |
1da177e4 | 190 | { |
bd4c625c LT |
191 | INITIALIZE_PATH(path); |
192 | struct cpu_key max_cpu_key, obj_key; | |
fb46f341 | 193 | struct reiserfs_key save_link_key, last_inode_key; |
bd4c625c LT |
194 | int retval = 0; |
195 | struct item_head *ih; | |
196 | struct buffer_head *bh; | |
197 | int item_pos; | |
198 | char *item; | |
199 | int done; | |
200 | struct inode *inode; | |
201 | int truncate; | |
1da177e4 | 202 | #ifdef CONFIG_QUOTA |
bd4c625c LT |
203 | int i; |
204 | int ms_active_set; | |
f4b113ae | 205 | int quota_enabled[MAXQUOTAS]; |
1da177e4 | 206 | #endif |
bd4c625c LT |
207 | |
208 | /* compose key to look for "save" links */ | |
209 | max_cpu_key.version = KEY_FORMAT_3_5; | |
210 | max_cpu_key.on_disk_key.k_dir_id = ~0U; | |
211 | max_cpu_key.on_disk_key.k_objectid = ~0U; | |
212 | set_cpu_key_k_offset(&max_cpu_key, ~0U); | |
213 | max_cpu_key.key_length = 3; | |
1da177e4 | 214 | |
fb46f341 LW |
215 | memset(&last_inode_key, 0, sizeof(last_inode_key)); |
216 | ||
1da177e4 | 217 | #ifdef CONFIG_QUOTA |
bd4c625c LT |
218 | /* Needed for iput() to work correctly and not trash data */ |
219 | if (s->s_flags & MS_ACTIVE) { | |
220 | ms_active_set = 0; | |
221 | } else { | |
222 | ms_active_set = 1; | |
223 | s->s_flags |= MS_ACTIVE; | |
224 | } | |
225 | /* Turn on quotas so that they are updated correctly */ | |
226 | for (i = 0; i < MAXQUOTAS; i++) { | |
f4b113ae | 227 | quota_enabled[i] = 1; |
bd4c625c | 228 | if (REISERFS_SB(s)->s_qf_names[i]) { |
f4b113ae JK |
229 | int ret; |
230 | ||
231 | if (sb_has_quota_active(s, i)) { | |
232 | quota_enabled[i] = 0; | |
233 | continue; | |
234 | } | |
235 | ret = reiserfs_quota_on_mount(s, i); | |
bd4c625c | 236 | if (ret < 0) |
45b03d5e JM |
237 | reiserfs_warning(s, "reiserfs-2500", |
238 | "cannot turn on journaled " | |
239 | "quota: error %d", ret); | |
bd4c625c LT |
240 | } |
241 | } | |
1da177e4 | 242 | #endif |
bd4c625c LT |
243 | |
244 | done = 0; | |
245 | REISERFS_SB(s)->s_is_unlinked_ok = 1; | |
246 | while (!retval) { | |
d2d0395f | 247 | int depth; |
bd4c625c LT |
248 | retval = search_item(s, &max_cpu_key, &path); |
249 | if (retval != ITEM_NOT_FOUND) { | |
0030b645 JM |
250 | reiserfs_error(s, "vs-2140", |
251 | "search_by_key returned %d", retval); | |
bd4c625c LT |
252 | break; |
253 | } | |
254 | ||
255 | bh = get_last_bh(&path); | |
256 | item_pos = get_item_pos(&path); | |
257 | if (item_pos != B_NR_ITEMS(bh)) { | |
45b03d5e JM |
258 | reiserfs_warning(s, "vs-2060", |
259 | "wrong position found"); | |
bd4c625c LT |
260 | break; |
261 | } | |
262 | item_pos--; | |
4cf5f7ad | 263 | ih = item_head(bh, item_pos); |
bd4c625c LT |
264 | |
265 | if (le32_to_cpu(ih->ih_key.k_dir_id) != MAX_KEY_OBJECTID) | |
266 | /* there are no "save" links anymore */ | |
267 | break; | |
268 | ||
269 | save_link_key = ih->ih_key; | |
270 | if (is_indirect_le_ih(ih)) | |
271 | truncate = 1; | |
272 | else | |
273 | truncate = 0; | |
274 | ||
275 | /* reiserfs_iget needs k_dirid and k_objectid only */ | |
4cf5f7ad | 276 | item = ih_item_body(bh, ih); |
bd4c625c LT |
277 | obj_key.on_disk_key.k_dir_id = le32_to_cpu(*(__le32 *) item); |
278 | obj_key.on_disk_key.k_objectid = | |
279 | le32_to_cpu(ih->ih_key.k_objectid); | |
280 | obj_key.on_disk_key.k_offset = 0; | |
281 | obj_key.on_disk_key.k_type = 0; | |
282 | ||
283 | pathrelse(&path); | |
284 | ||
285 | inode = reiserfs_iget(s, &obj_key); | |
286 | if (!inode) { | |
098297b2 JM |
287 | /* |
288 | * the unlink almost completed, it just did not | |
289 | * manage to remove "save" link and release objectid | |
290 | */ | |
45b03d5e | 291 | reiserfs_warning(s, "vs-2180", "iget failed for %K", |
bd4c625c LT |
292 | &obj_key); |
293 | retval = remove_save_link_only(s, &save_link_key, 1); | |
294 | continue; | |
295 | } | |
296 | ||
297 | if (!truncate && inode->i_nlink) { | |
298 | /* file is not unlinked */ | |
45b03d5e JM |
299 | reiserfs_warning(s, "vs-2185", |
300 | "file %K is not unlinked", | |
bd4c625c LT |
301 | &obj_key); |
302 | retval = remove_save_link_only(s, &save_link_key, 0); | |
303 | continue; | |
304 | } | |
d2d0395f | 305 | depth = reiserfs_write_unlock_nested(inode->i_sb); |
871a2931 | 306 | dquot_initialize(inode); |
d2d0395f | 307 | reiserfs_write_lock_nested(inode->i_sb, depth); |
bd4c625c LT |
308 | |
309 | if (truncate && S_ISDIR(inode->i_mode)) { | |
098297b2 JM |
310 | /* |
311 | * We got a truncate request for a dir which | |
312 | * is impossible. The only imaginable way is to | |
313 | * execute unfinished truncate request then boot | |
314 | * into old kernel, remove the file and create dir | |
315 | * with the same key. | |
316 | */ | |
45b03d5e JM |
317 | reiserfs_warning(s, "green-2101", |
318 | "impossible truncate on a " | |
319 | "directory %k. Please report", | |
bd4c625c LT |
320 | INODE_PKEY(inode)); |
321 | retval = remove_save_link_only(s, &save_link_key, 0); | |
322 | truncate = 0; | |
323 | iput(inode); | |
324 | continue; | |
325 | } | |
326 | ||
327 | if (truncate) { | |
328 | REISERFS_I(inode)->i_flags |= | |
329 | i_link_saved_truncate_mask; | |
098297b2 JM |
330 | /* |
331 | * not completed truncate found. New size was | |
332 | * committed together with "save" link | |
333 | */ | |
bd4c625c LT |
334 | reiserfs_info(s, "Truncating %k to %Ld ..", |
335 | INODE_PKEY(inode), inode->i_size); | |
098297b2 JM |
336 | |
337 | /* don't update modification time */ | |
338 | reiserfs_truncate_file(inode, 0); | |
339 | ||
bd4c625c LT |
340 | retval = remove_save_link(inode, truncate); |
341 | } else { | |
342 | REISERFS_I(inode)->i_flags |= i_link_saved_unlink_mask; | |
343 | /* not completed unlink (rmdir) found */ | |
344 | reiserfs_info(s, "Removing %k..", INODE_PKEY(inode)); | |
fb46f341 LW |
345 | if (memcmp(&last_inode_key, INODE_PKEY(inode), |
346 | sizeof(last_inode_key))){ | |
347 | last_inode_key = *INODE_PKEY(inode); | |
348 | /* removal gets completed in iput */ | |
349 | retval = 0; | |
350 | } else { | |
45b03d5e JM |
351 | reiserfs_warning(s, "super-2189", "Dead loop " |
352 | "in finish_unfinished " | |
353 | "detected, just remove " | |
354 | "save link\n"); | |
fb46f341 LW |
355 | retval = remove_save_link_only(s, |
356 | &save_link_key, 0); | |
357 | } | |
bd4c625c LT |
358 | } |
359 | ||
360 | iput(inode); | |
361 | printk("done\n"); | |
362 | done++; | |
363 | } | |
364 | REISERFS_SB(s)->s_is_unlinked_ok = 0; | |
365 | ||
1da177e4 | 366 | #ifdef CONFIG_QUOTA |
bd4c625c | 367 | /* Turn quotas off */ |
d2d0395f | 368 | reiserfs_write_unlock(s); |
bd4c625c | 369 | for (i = 0; i < MAXQUOTAS; i++) { |
f4b113ae | 370 | if (sb_dqopt(s)->files[i] && quota_enabled[i]) |
287a8095 | 371 | dquot_quota_off(s, i); |
bd4c625c | 372 | } |
d2d0395f | 373 | reiserfs_write_lock(s); |
bd4c625c LT |
374 | if (ms_active_set) |
375 | /* Restore the flag back */ | |
376 | s->s_flags &= ~MS_ACTIVE; | |
1da177e4 | 377 | #endif |
bd4c625c LT |
378 | pathrelse(&path); |
379 | if (done) | |
380 | reiserfs_info(s, "There were %d uncompleted unlinks/truncates. " | |
381 | "Completed\n", done); | |
382 | return retval; | |
1da177e4 | 383 | } |
bd4c625c | 384 | |
098297b2 JM |
385 | /* |
386 | * to protect file being unlinked from getting lost we "safe" link files | |
387 | * being unlinked. This link will be deleted in the same transaction with last | |
388 | * item of file. mounting the filesystem we scan all these links and remove | |
389 | * files which almost got lost | |
390 | */ | |
bd4c625c LT |
391 | void add_save_link(struct reiserfs_transaction_handle *th, |
392 | struct inode *inode, int truncate) | |
1da177e4 | 393 | { |
bd4c625c LT |
394 | INITIALIZE_PATH(path); |
395 | int retval; | |
396 | struct cpu_key key; | |
397 | struct item_head ih; | |
398 | __le32 link; | |
399 | ||
400 | BUG_ON(!th->t_trans_id); | |
401 | ||
402 | /* file can only get one "save link" of each kind */ | |
403 | RFALSE(truncate && | |
404 | (REISERFS_I(inode)->i_flags & i_link_saved_truncate_mask), | |
405 | "saved link already exists for truncated inode %lx", | |
406 | (long)inode->i_ino); | |
407 | RFALSE(!truncate && | |
408 | (REISERFS_I(inode)->i_flags & i_link_saved_unlink_mask), | |
409 | "saved link already exists for unlinked inode %lx", | |
410 | (long)inode->i_ino); | |
411 | ||
412 | /* setup key of "save" link */ | |
413 | key.version = KEY_FORMAT_3_5; | |
414 | key.on_disk_key.k_dir_id = MAX_KEY_OBJECTID; | |
415 | key.on_disk_key.k_objectid = inode->i_ino; | |
416 | if (!truncate) { | |
417 | /* unlink, rmdir, rename */ | |
418 | set_cpu_key_k_offset(&key, 1 + inode->i_sb->s_blocksize); | |
419 | set_cpu_key_k_type(&key, TYPE_DIRECT); | |
420 | ||
421 | /* item head of "safe" link */ | |
422 | make_le_item_head(&ih, &key, key.version, | |
423 | 1 + inode->i_sb->s_blocksize, TYPE_DIRECT, | |
424 | 4 /*length */ , 0xffff /*free space */ ); | |
425 | } else { | |
426 | /* truncate */ | |
427 | if (S_ISDIR(inode->i_mode)) | |
45b03d5e JM |
428 | reiserfs_warning(inode->i_sb, "green-2102", |
429 | "Adding a truncate savelink for " | |
430 | "a directory %k! Please report", | |
bd4c625c LT |
431 | INODE_PKEY(inode)); |
432 | set_cpu_key_k_offset(&key, 1); | |
433 | set_cpu_key_k_type(&key, TYPE_INDIRECT); | |
434 | ||
435 | /* item head of "safe" link */ | |
436 | make_le_item_head(&ih, &key, key.version, 1, TYPE_INDIRECT, | |
437 | 4 /*length */ , 0 /*free space */ ); | |
438 | } | |
439 | key.key_length = 3; | |
440 | ||
441 | /* look for its place in the tree */ | |
442 | retval = search_item(inode->i_sb, &key, &path); | |
443 | if (retval != ITEM_NOT_FOUND) { | |
444 | if (retval != -ENOSPC) | |
0030b645 JM |
445 | reiserfs_error(inode->i_sb, "vs-2100", |
446 | "search_by_key (%K) returned %d", &key, | |
447 | retval); | |
bd4c625c LT |
448 | pathrelse(&path); |
449 | return; | |
450 | } | |
1da177e4 | 451 | |
bd4c625c LT |
452 | /* body of "save" link */ |
453 | link = INODE_PKEY(inode)->k_dir_id; | |
454 | ||
25985edc | 455 | /* put "save" link into tree, don't charge quota to anyone */ |
bd4c625c LT |
456 | retval = |
457 | reiserfs_insert_item(th, &path, &key, &ih, NULL, (char *)&link); | |
458 | if (retval) { | |
459 | if (retval != -ENOSPC) | |
0030b645 JM |
460 | reiserfs_error(inode->i_sb, "vs-2120", |
461 | "insert_item returned %d", retval); | |
bd4c625c LT |
462 | } else { |
463 | if (truncate) | |
464 | REISERFS_I(inode)->i_flags |= | |
465 | i_link_saved_truncate_mask; | |
466 | else | |
467 | REISERFS_I(inode)->i_flags |= i_link_saved_unlink_mask; | |
468 | } | |
469 | } | |
1da177e4 LT |
470 | |
471 | /* this opens transaction unlike add_save_link */ | |
bd4c625c | 472 | int remove_save_link(struct inode *inode, int truncate) |
1da177e4 | 473 | { |
bd4c625c LT |
474 | struct reiserfs_transaction_handle th; |
475 | struct reiserfs_key key; | |
476 | int err; | |
477 | ||
478 | /* we are going to do one balancing only */ | |
479 | err = journal_begin(&th, inode->i_sb, JOURNAL_PER_BALANCE_CNT); | |
480 | if (err) | |
481 | return err; | |
482 | ||
483 | /* setup key of "save" link */ | |
484 | key.k_dir_id = cpu_to_le32(MAX_KEY_OBJECTID); | |
485 | key.k_objectid = INODE_PKEY(inode)->k_objectid; | |
486 | if (!truncate) { | |
487 | /* unlink, rmdir, rename */ | |
488 | set_le_key_k_offset(KEY_FORMAT_3_5, &key, | |
489 | 1 + inode->i_sb->s_blocksize); | |
490 | set_le_key_k_type(KEY_FORMAT_3_5, &key, TYPE_DIRECT); | |
491 | } else { | |
492 | /* truncate */ | |
493 | set_le_key_k_offset(KEY_FORMAT_3_5, &key, 1); | |
494 | set_le_key_k_type(KEY_FORMAT_3_5, &key, TYPE_INDIRECT); | |
495 | } | |
1da177e4 | 496 | |
bd4c625c LT |
497 | if ((truncate && |
498 | (REISERFS_I(inode)->i_flags & i_link_saved_truncate_mask)) || | |
499 | (!truncate && | |
500 | (REISERFS_I(inode)->i_flags & i_link_saved_unlink_mask))) | |
501 | /* don't take quota bytes from anywhere */ | |
502 | reiserfs_delete_solid_item(&th, NULL, &key); | |
503 | if (!truncate) { | |
504 | reiserfs_release_objectid(&th, inode->i_ino); | |
505 | REISERFS_I(inode)->i_flags &= ~i_link_saved_unlink_mask; | |
506 | } else | |
507 | REISERFS_I(inode)->i_flags &= ~i_link_saved_truncate_mask; | |
508 | ||
706a5323 | 509 | return journal_end(&th, inode->i_sb); |
bd4c625c | 510 | } |
1da177e4 | 511 | |
edc666e2 | 512 | static void reiserfs_kill_sb(struct super_block *s) |
1da177e4 | 513 | { |
edc666e2 | 514 | if (REISERFS_SB(s)) { |
672fe15d | 515 | reiserfs_proc_info_done(s); |
a9e36da6 JM |
516 | /* |
517 | * Force any pending inode evictions to occur now. Any | |
518 | * inodes to be removed that have extended attributes | |
519 | * associated with them need to clean them up before | |
520 | * we can release the extended attribute root dentries. | |
521 | * shrink_dcache_for_umount will BUG if we don't release | |
522 | * those before it's called so ->put_super is too late. | |
523 | */ | |
524 | shrink_dcache_sb(s); | |
525 | ||
526 | dput(REISERFS_SB(s)->xattr_root); | |
527 | REISERFS_SB(s)->xattr_root = NULL; | |
528 | dput(REISERFS_SB(s)->priv_root); | |
529 | REISERFS_SB(s)->priv_root = NULL; | |
bd4c625c LT |
530 | } |
531 | ||
edc666e2 DH |
532 | kill_block_super(s); |
533 | } | |
534 | ||
535 | static void reiserfs_put_super(struct super_block *s) | |
536 | { | |
537 | struct reiserfs_transaction_handle th; | |
538 | th.t_trans_id = 0; | |
bd4c625c | 539 | |
e0ccfd95 CH |
540 | dquot_disable(s, -1, DQUOT_USAGE_ENABLED | DQUOT_LIMITS_ENABLED); |
541 | ||
8ebc4232 | 542 | reiserfs_write_lock(s); |
6cfd0148 | 543 | |
098297b2 JM |
544 | /* |
545 | * change file system state to current state if it was mounted | |
546 | * with read-write permissions | |
547 | */ | |
bd4c625c LT |
548 | if (!(s->s_flags & MS_RDONLY)) { |
549 | if (!journal_begin(&th, s, 10)) { | |
550 | reiserfs_prepare_for_journal(s, SB_BUFFER_WITH_SB(s), | |
551 | 1); | |
552 | set_sb_umount_state(SB_DISK_SUPER_BLOCK(s), | |
553 | REISERFS_SB(s)->s_mount_state); | |
554 | journal_mark_dirty(&th, s, SB_BUFFER_WITH_SB(s)); | |
555 | } | |
556 | } | |
557 | ||
098297b2 JM |
558 | /* |
559 | * note, journal_release checks for readonly mount, and can | |
560 | * decide not to do a journal_end | |
bd4c625c LT |
561 | */ |
562 | journal_release(&th, s); | |
563 | ||
5065227b | 564 | reiserfs_free_bitmap_cache(s); |
bd4c625c LT |
565 | |
566 | brelse(SB_BUFFER_WITH_SB(s)); | |
567 | ||
568 | print_statistics(s); | |
569 | ||
bd4c625c | 570 | if (REISERFS_SB(s)->reserved_blocks != 0) { |
45b03d5e | 571 | reiserfs_warning(s, "green-2005", "reserved blocks left %d", |
bd4c625c LT |
572 | REISERFS_SB(s)->reserved_blocks); |
573 | } | |
574 | ||
8ebc4232 FW |
575 | reiserfs_write_unlock(s); |
576 | mutex_destroy(&REISERFS_SB(s)->lock); | |
797d9016 | 577 | destroy_workqueue(REISERFS_SB(s)->commit_wq); |
bd4c625c LT |
578 | kfree(s->s_fs_info); |
579 | s->s_fs_info = NULL; | |
1da177e4 LT |
580 | } |
581 | ||
e18b890b | 582 | static struct kmem_cache *reiserfs_inode_cachep; |
1da177e4 LT |
583 | |
584 | static struct inode *reiserfs_alloc_inode(struct super_block *sb) | |
585 | { | |
586 | struct reiserfs_inode_info *ei; | |
bd4c625c | 587 | ei = (struct reiserfs_inode_info *) |
e94b1766 | 588 | kmem_cache_alloc(reiserfs_inode_cachep, GFP_KERNEL); |
1da177e4 LT |
589 | if (!ei) |
590 | return NULL; | |
0e4f6a79 AV |
591 | atomic_set(&ei->openers, 0); |
592 | mutex_init(&ei->tailpack); | |
1da177e4 LT |
593 | return &ei->vfs_inode; |
594 | } | |
595 | ||
fa0d7e3d | 596 | static void reiserfs_i_callback(struct rcu_head *head) |
1da177e4 | 597 | { |
fa0d7e3d | 598 | struct inode *inode = container_of(head, struct inode, i_rcu); |
1da177e4 LT |
599 | kmem_cache_free(reiserfs_inode_cachep, REISERFS_I(inode)); |
600 | } | |
601 | ||
fa0d7e3d NP |
602 | static void reiserfs_destroy_inode(struct inode *inode) |
603 | { | |
604 | call_rcu(&inode->i_rcu, reiserfs_i_callback); | |
605 | } | |
606 | ||
51cc5068 | 607 | static void init_once(void *foo) |
1da177e4 | 608 | { |
bd4c625c | 609 | struct reiserfs_inode_info *ei = (struct reiserfs_inode_info *)foo; |
1da177e4 | 610 | |
a35afb83 CL |
611 | INIT_LIST_HEAD(&ei->i_prealloc_list); |
612 | inode_init_once(&ei->vfs_inode); | |
1da177e4 | 613 | } |
bd4c625c | 614 | |
31e14368 | 615 | static int __init init_inodecache(void) |
1da177e4 LT |
616 | { |
617 | reiserfs_inode_cachep = kmem_cache_create("reiser_inode_cache", | |
bd4c625c LT |
618 | sizeof(struct |
619 | reiserfs_inode_info), | |
fffb60f9 PJ |
620 | 0, (SLAB_RECLAIM_ACCOUNT| |
621 | SLAB_MEM_SPREAD), | |
20c2df83 | 622 | init_once); |
1da177e4 LT |
623 | if (reiserfs_inode_cachep == NULL) |
624 | return -ENOMEM; | |
625 | return 0; | |
626 | } | |
627 | ||
628 | static void destroy_inodecache(void) | |
629 | { | |
8c0a8537 KS |
630 | /* |
631 | * Make sure all delayed rcu free inodes are flushed before we | |
632 | * destroy cache. | |
633 | */ | |
634 | rcu_barrier(); | |
1a1d92c1 | 635 | kmem_cache_destroy(reiserfs_inode_cachep); |
1da177e4 LT |
636 | } |
637 | ||
638 | /* we don't mark inodes dirty, we just log them */ | |
aa385729 | 639 | static void reiserfs_dirty_inode(struct inode *inode, int flags) |
bd4c625c LT |
640 | { |
641 | struct reiserfs_transaction_handle th; | |
642 | ||
643 | int err = 0; | |
dc8f6d89 | 644 | |
bd4c625c | 645 | if (inode->i_sb->s_flags & MS_RDONLY) { |
45b03d5e JM |
646 | reiserfs_warning(inode->i_sb, "clm-6006", |
647 | "writing inode %lu on readonly FS", | |
bd4c625c LT |
648 | inode->i_ino); |
649 | return; | |
650 | } | |
278f6679 | 651 | reiserfs_write_lock(inode->i_sb); |
bd4c625c | 652 | |
098297b2 JM |
653 | /* |
654 | * this is really only used for atime updates, so they don't have | |
655 | * to be included in O_SYNC or fsync | |
bd4c625c LT |
656 | */ |
657 | err = journal_begin(&th, inode->i_sb, 1); | |
dc8f6d89 FW |
658 | if (err) |
659 | goto out; | |
660 | ||
bd4c625c | 661 | reiserfs_update_sd(&th, inode); |
706a5323 | 662 | journal_end(&th, inode->i_sb); |
dc8f6d89 FW |
663 | |
664 | out: | |
278f6679 | 665 | reiserfs_write_unlock(inode->i_sb); |
1da177e4 LT |
666 | } |
667 | ||
c3aa0776 JK |
668 | static int reiserfs_show_options(struct seq_file *seq, struct dentry *root) |
669 | { | |
670 | struct super_block *s = root->d_sb; | |
671 | struct reiserfs_journal *journal = SB_JOURNAL(s); | |
672 | long opts = REISERFS_SB(s)->s_mount_opt; | |
673 | ||
674 | if (opts & (1 << REISERFS_LARGETAIL)) | |
675 | seq_puts(seq, ",tails=on"); | |
676 | else if (!(opts & (1 << REISERFS_SMALLTAIL))) | |
677 | seq_puts(seq, ",notail"); | |
678 | /* tails=small is default so we don't show it */ | |
679 | ||
680 | if (!(opts & (1 << REISERFS_BARRIER_FLUSH))) | |
681 | seq_puts(seq, ",barrier=none"); | |
682 | /* barrier=flush is default so we don't show it */ | |
683 | ||
684 | if (opts & (1 << REISERFS_ERROR_CONTINUE)) | |
685 | seq_puts(seq, ",errors=continue"); | |
686 | else if (opts & (1 << REISERFS_ERROR_PANIC)) | |
687 | seq_puts(seq, ",errors=panic"); | |
688 | /* errors=ro is default so we don't show it */ | |
689 | ||
690 | if (opts & (1 << REISERFS_DATA_LOG)) | |
691 | seq_puts(seq, ",data=journal"); | |
692 | else if (opts & (1 << REISERFS_DATA_WRITEBACK)) | |
693 | seq_puts(seq, ",data=writeback"); | |
694 | /* data=ordered is default so we don't show it */ | |
695 | ||
696 | if (opts & (1 << REISERFS_ATTRS)) | |
697 | seq_puts(seq, ",attrs"); | |
698 | ||
699 | if (opts & (1 << REISERFS_XATTRS_USER)) | |
700 | seq_puts(seq, ",user_xattr"); | |
701 | ||
702 | if (opts & (1 << REISERFS_EXPOSE_PRIVROOT)) | |
703 | seq_puts(seq, ",expose_privroot"); | |
704 | ||
705 | if (opts & (1 << REISERFS_POSIXACL)) | |
706 | seq_puts(seq, ",acl"); | |
707 | ||
708 | if (REISERFS_SB(s)->s_jdev) | |
709 | seq_printf(seq, ",jdev=%s", REISERFS_SB(s)->s_jdev); | |
710 | ||
711 | if (journal->j_max_commit_age != journal->j_default_max_commit_age) | |
712 | seq_printf(seq, ",commit=%d", journal->j_max_commit_age); | |
713 | ||
714 | #ifdef CONFIG_QUOTA | |
715 | if (REISERFS_SB(s)->s_qf_names[USRQUOTA]) | |
716 | seq_printf(seq, ",usrjquota=%s", REISERFS_SB(s)->s_qf_names[USRQUOTA]); | |
717 | else if (opts & (1 << REISERFS_USRQUOTA)) | |
718 | seq_puts(seq, ",usrquota"); | |
719 | if (REISERFS_SB(s)->s_qf_names[GRPQUOTA]) | |
720 | seq_printf(seq, ",grpjquota=%s", REISERFS_SB(s)->s_qf_names[GRPQUOTA]); | |
721 | else if (opts & (1 << REISERFS_GRPQUOTA)) | |
722 | seq_puts(seq, ",grpquota"); | |
723 | if (REISERFS_SB(s)->s_jquota_fmt) { | |
724 | if (REISERFS_SB(s)->s_jquota_fmt == QFMT_VFS_OLD) | |
725 | seq_puts(seq, ",jqfmt=vfsold"); | |
726 | else if (REISERFS_SB(s)->s_jquota_fmt == QFMT_VFS_V0) | |
727 | seq_puts(seq, ",jqfmt=vfsv0"); | |
728 | } | |
729 | #endif | |
730 | ||
731 | /* Block allocator options */ | |
732 | if (opts & (1 << REISERFS_NO_BORDER)) | |
733 | seq_puts(seq, ",block-allocator=noborder"); | |
734 | if (opts & (1 << REISERFS_NO_UNHASHED_RELOCATION)) | |
735 | seq_puts(seq, ",block-allocator=no_unhashed_relocation"); | |
736 | if (opts & (1 << REISERFS_HASHED_RELOCATION)) | |
737 | seq_puts(seq, ",block-allocator=hashed_relocation"); | |
738 | if (opts & (1 << REISERFS_TEST4)) | |
739 | seq_puts(seq, ",block-allocator=test4"); | |
740 | show_alloc_options(seq, s); | |
741 | return 0; | |
742 | } | |
743 | ||
1da177e4 | 744 | #ifdef CONFIG_QUOTA |
bd4c625c LT |
745 | static ssize_t reiserfs_quota_write(struct super_block *, int, const char *, |
746 | size_t, loff_t); | |
747 | static ssize_t reiserfs_quota_read(struct super_block *, int, char *, size_t, | |
748 | loff_t); | |
1da177e4 LT |
749 | #endif |
750 | ||
ee9b6d61 | 751 | static const struct super_operations reiserfs_sops = { |
bd4c625c LT |
752 | .alloc_inode = reiserfs_alloc_inode, |
753 | .destroy_inode = reiserfs_destroy_inode, | |
754 | .write_inode = reiserfs_write_inode, | |
755 | .dirty_inode = reiserfs_dirty_inode, | |
845a2cc0 | 756 | .evict_inode = reiserfs_evict_inode, |
bd4c625c | 757 | .put_super = reiserfs_put_super, |
bd4c625c | 758 | .sync_fs = reiserfs_sync_fs, |
c4be0c1d TS |
759 | .freeze_fs = reiserfs_freeze, |
760 | .unfreeze_fs = reiserfs_unfreeze, | |
bd4c625c LT |
761 | .statfs = reiserfs_statfs, |
762 | .remount_fs = reiserfs_remount, | |
c3aa0776 | 763 | .show_options = reiserfs_show_options, |
1da177e4 | 764 | #ifdef CONFIG_QUOTA |
bd4c625c LT |
765 | .quota_read = reiserfs_quota_read, |
766 | .quota_write = reiserfs_quota_write, | |
1da177e4 LT |
767 | #endif |
768 | }; | |
769 | ||
770 | #ifdef CONFIG_QUOTA | |
771 | #define QTYPE2NAME(t) ((t)==USRQUOTA?"user":"group") | |
772 | ||
1da177e4 LT |
773 | static int reiserfs_write_dquot(struct dquot *); |
774 | static int reiserfs_acquire_dquot(struct dquot *); | |
775 | static int reiserfs_release_dquot(struct dquot *); | |
776 | static int reiserfs_mark_dquot_dirty(struct dquot *); | |
777 | static int reiserfs_write_info(struct super_block *, int); | |
f00c9e44 | 778 | static int reiserfs_quota_on(struct super_block *, int, int, struct path *); |
1da177e4 | 779 | |
61e225dc | 780 | static const struct dquot_operations reiserfs_quota_operations = { |
bd4c625c LT |
781 | .write_dquot = reiserfs_write_dquot, |
782 | .acquire_dquot = reiserfs_acquire_dquot, | |
783 | .release_dquot = reiserfs_release_dquot, | |
784 | .mark_dirty = reiserfs_mark_dquot_dirty, | |
785 | .write_info = reiserfs_write_info, | |
4103003b JK |
786 | .alloc_dquot = dquot_alloc, |
787 | .destroy_dquot = dquot_destroy, | |
1da177e4 LT |
788 | }; |
789 | ||
0d54b217 | 790 | static const struct quotactl_ops reiserfs_qctl_operations = { |
bd4c625c | 791 | .quota_on = reiserfs_quota_on, |
287a8095 CH |
792 | .quota_off = dquot_quota_off, |
793 | .quota_sync = dquot_quota_sync, | |
794 | .get_info = dquot_get_dqinfo, | |
795 | .set_info = dquot_set_dqinfo, | |
796 | .get_dqblk = dquot_get_dqblk, | |
797 | .set_dqblk = dquot_set_dqblk, | |
1da177e4 LT |
798 | }; |
799 | #endif | |
800 | ||
39655164 | 801 | static const struct export_operations reiserfs_export_ops = { |
bd4c625c | 802 | .encode_fh = reiserfs_encode_fh, |
be55caf1 CH |
803 | .fh_to_dentry = reiserfs_fh_to_dentry, |
804 | .fh_to_parent = reiserfs_fh_to_parent, | |
bd4c625c | 805 | .get_parent = reiserfs_get_parent, |
bd4c625c | 806 | }; |
1da177e4 | 807 | |
098297b2 JM |
808 | /* |
809 | * this struct is used in reiserfs_getopt () for containing the value for | |
810 | * those mount options that have values rather than being toggles. | |
811 | */ | |
1da177e4 | 812 | typedef struct { |
bd4c625c | 813 | char *value; |
098297b2 JM |
814 | /* |
815 | * bitmask which is to set on mount_options bitmask | |
816 | * when this value is found, 0 is no bits are to be changed. | |
817 | */ | |
818 | int setmask; | |
819 | /* | |
820 | * bitmask which is to clear on mount_options bitmask | |
821 | * when this value is found, 0 is no bits are to be changed. | |
822 | * This is applied BEFORE setmask | |
823 | */ | |
824 | int clrmask; | |
1da177e4 LT |
825 | } arg_desc_t; |
826 | ||
827 | /* Set this bit in arg_required to allow empty arguments */ | |
828 | #define REISERFS_OPT_ALLOWEMPTY 31 | |
829 | ||
098297b2 JM |
830 | /* |
831 | * this struct is used in reiserfs_getopt() for describing the | |
832 | * set of reiserfs mount options | |
833 | */ | |
1da177e4 | 834 | typedef struct { |
bd4c625c | 835 | char *option_name; |
098297b2 JM |
836 | |
837 | /* 0 if argument is not required, not 0 otherwise */ | |
838 | int arg_required; | |
839 | ||
840 | /* list of values accepted by an option */ | |
841 | const arg_desc_t *values; | |
842 | ||
843 | /* | |
844 | * bitmask which is to set on mount_options bitmask | |
845 | * when this value is found, 0 is no bits are to be changed. | |
846 | */ | |
847 | int setmask; | |
848 | ||
849 | /* | |
850 | * bitmask which is to clear on mount_options bitmask | |
851 | * when this value is found, 0 is no bits are to be changed. | |
852 | * This is applied BEFORE setmask | |
853 | */ | |
854 | int clrmask; | |
1da177e4 LT |
855 | } opt_desc_t; |
856 | ||
857 | /* possible values for -o data= */ | |
858 | static const arg_desc_t logging_mode[] = { | |
bd4c625c LT |
859 | {"ordered", 1 << REISERFS_DATA_ORDERED, |
860 | (1 << REISERFS_DATA_LOG | 1 << REISERFS_DATA_WRITEBACK)}, | |
861 | {"journal", 1 << REISERFS_DATA_LOG, | |
862 | (1 << REISERFS_DATA_ORDERED | 1 << REISERFS_DATA_WRITEBACK)}, | |
863 | {"writeback", 1 << REISERFS_DATA_WRITEBACK, | |
864 | (1 << REISERFS_DATA_ORDERED | 1 << REISERFS_DATA_LOG)}, | |
cd02b966 | 865 | {.value = NULL} |
1da177e4 LT |
866 | }; |
867 | ||
868 | /* possible values for -o barrier= */ | |
869 | static const arg_desc_t barrier_mode[] = { | |
bd4c625c LT |
870 | {"none", 1 << REISERFS_BARRIER_NONE, 1 << REISERFS_BARRIER_FLUSH}, |
871 | {"flush", 1 << REISERFS_BARRIER_FLUSH, 1 << REISERFS_BARRIER_NONE}, | |
cd02b966 | 872 | {.value = NULL} |
1da177e4 LT |
873 | }; |
874 | ||
098297b2 JM |
875 | /* |
876 | * possible values for "-o block-allocator=" and bits which are to be set in | |
877 | * s_mount_opt of reiserfs specific part of in-core super block | |
878 | */ | |
1da177e4 | 879 | static const arg_desc_t balloc[] = { |
bd4c625c LT |
880 | {"noborder", 1 << REISERFS_NO_BORDER, 0}, |
881 | {"border", 0, 1 << REISERFS_NO_BORDER}, | |
882 | {"no_unhashed_relocation", 1 << REISERFS_NO_UNHASHED_RELOCATION, 0}, | |
883 | {"hashed_relocation", 1 << REISERFS_HASHED_RELOCATION, 0}, | |
884 | {"test4", 1 << REISERFS_TEST4, 0}, | |
885 | {"notest4", 0, 1 << REISERFS_TEST4}, | |
886 | {NULL, 0, 0} | |
1da177e4 LT |
887 | }; |
888 | ||
889 | static const arg_desc_t tails[] = { | |
bd4c625c LT |
890 | {"on", 1 << REISERFS_LARGETAIL, 1 << REISERFS_SMALLTAIL}, |
891 | {"off", 0, (1 << REISERFS_LARGETAIL) | (1 << REISERFS_SMALLTAIL)}, | |
892 | {"small", 1 << REISERFS_SMALLTAIL, 1 << REISERFS_LARGETAIL}, | |
893 | {NULL, 0, 0} | |
1da177e4 LT |
894 | }; |
895 | ||
896 | static const arg_desc_t error_actions[] = { | |
bd4c625c LT |
897 | {"panic", 1 << REISERFS_ERROR_PANIC, |
898 | (1 << REISERFS_ERROR_RO | 1 << REISERFS_ERROR_CONTINUE)}, | |
899 | {"ro-remount", 1 << REISERFS_ERROR_RO, | |
900 | (1 << REISERFS_ERROR_PANIC | 1 << REISERFS_ERROR_CONTINUE)}, | |
1da177e4 | 901 | #ifdef REISERFS_JOURNAL_ERROR_ALLOWS_NO_LOG |
bd4c625c LT |
902 | {"continue", 1 << REISERFS_ERROR_CONTINUE, |
903 | (1 << REISERFS_ERROR_PANIC | 1 << REISERFS_ERROR_RO)}, | |
1da177e4 | 904 | #endif |
bd4c625c | 905 | {NULL, 0, 0}, |
1da177e4 LT |
906 | }; |
907 | ||
098297b2 JM |
908 | /* |
909 | * proceed only one option from a list *cur - string containing of mount | |
910 | * options | |
911 | * opts - array of options which are accepted | |
912 | * opt_arg - if option is found and requires an argument and if it is specifed | |
913 | * in the input - pointer to the argument is stored here | |
914 | * bit_flags - if option requires to set a certain bit - it is set here | |
915 | * return -1 if unknown option is found, opt->arg_required otherwise | |
916 | */ | |
bd4c625c LT |
917 | static int reiserfs_getopt(struct super_block *s, char **cur, opt_desc_t * opts, |
918 | char **opt_arg, unsigned long *bit_flags) | |
1da177e4 | 919 | { |
bd4c625c | 920 | char *p; |
098297b2 JM |
921 | /* |
922 | * foo=bar, | |
923 | * ^ ^ ^ | |
924 | * | | +-- option_end | |
925 | * | +-- arg_start | |
926 | * +-- option_start | |
bd4c625c LT |
927 | */ |
928 | const opt_desc_t *opt; | |
929 | const arg_desc_t *arg; | |
930 | ||
931 | p = *cur; | |
932 | ||
933 | /* assume argument cannot contain commas */ | |
934 | *cur = strchr(p, ','); | |
935 | if (*cur) { | |
936 | *(*cur) = '\0'; | |
937 | (*cur)++; | |
938 | } | |
939 | ||
940 | if (!strncmp(p, "alloc=", 6)) { | |
098297b2 JM |
941 | /* |
942 | * Ugly special case, probably we should redo options | |
943 | * parser so that it can understand several arguments for | |
944 | * some options, also so that it can fill several bitfields | |
945 | * with option values. | |
946 | */ | |
bd4c625c LT |
947 | if (reiserfs_parse_alloc_options(s, p + 6)) { |
948 | return -1; | |
949 | } else { | |
950 | return 0; | |
951 | } | |
952 | } | |
953 | ||
954 | /* for every option in the list */ | |
955 | for (opt = opts; opt->option_name; opt++) { | |
956 | if (!strncmp(p, opt->option_name, strlen(opt->option_name))) { | |
957 | if (bit_flags) { | |
958 | if (opt->clrmask == | |
959 | (1 << REISERFS_UNSUPPORTED_OPT)) | |
45b03d5e JM |
960 | reiserfs_warning(s, "super-6500", |
961 | "%s not supported.\n", | |
bd4c625c LT |
962 | p); |
963 | else | |
964 | *bit_flags &= ~opt->clrmask; | |
965 | if (opt->setmask == | |
966 | (1 << REISERFS_UNSUPPORTED_OPT)) | |
45b03d5e JM |
967 | reiserfs_warning(s, "super-6501", |
968 | "%s not supported.\n", | |
bd4c625c LT |
969 | p); |
970 | else | |
971 | *bit_flags |= opt->setmask; | |
972 | } | |
973 | break; | |
974 | } | |
975 | } | |
976 | if (!opt->option_name) { | |
45b03d5e JM |
977 | reiserfs_warning(s, "super-6502", |
978 | "unknown mount option \"%s\"", p); | |
bd4c625c LT |
979 | return -1; |
980 | } | |
981 | ||
982 | p += strlen(opt->option_name); | |
983 | switch (*p) { | |
984 | case '=': | |
985 | if (!opt->arg_required) { | |
45b03d5e JM |
986 | reiserfs_warning(s, "super-6503", |
987 | "the option \"%s\" does not " | |
988 | "require an argument\n", | |
bd4c625c LT |
989 | opt->option_name); |
990 | return -1; | |
991 | } | |
992 | break; | |
993 | ||
994 | case 0: | |
995 | if (opt->arg_required) { | |
45b03d5e JM |
996 | reiserfs_warning(s, "super-6504", |
997 | "the option \"%s\" requires an " | |
998 | "argument\n", opt->option_name); | |
bd4c625c LT |
999 | return -1; |
1000 | } | |
1001 | break; | |
1002 | default: | |
45b03d5e JM |
1003 | reiserfs_warning(s, "super-6505", |
1004 | "head of option \"%s\" is only correct\n", | |
bd4c625c LT |
1005 | opt->option_name); |
1006 | return -1; | |
1007 | } | |
1008 | ||
098297b2 JM |
1009 | /* |
1010 | * move to the argument, or to next option if argument is not | |
1011 | * required | |
1012 | */ | |
bd4c625c LT |
1013 | p++; |
1014 | ||
1015 | if (opt->arg_required | |
1016 | && !(opt->arg_required & (1 << REISERFS_OPT_ALLOWEMPTY)) | |
1017 | && !strlen(p)) { | |
1018 | /* this catches "option=," if not allowed */ | |
45b03d5e JM |
1019 | reiserfs_warning(s, "super-6506", |
1020 | "empty argument for \"%s\"\n", | |
bd4c625c LT |
1021 | opt->option_name); |
1022 | return -1; | |
1023 | } | |
1024 | ||
1025 | if (!opt->values) { | |
1026 | /* *=NULLopt_arg contains pointer to argument */ | |
1027 | *opt_arg = p; | |
1028 | return opt->arg_required & ~(1 << REISERFS_OPT_ALLOWEMPTY); | |
1029 | } | |
1030 | ||
1031 | /* values possible for this option are listed in opt->values */ | |
1032 | for (arg = opt->values; arg->value; arg++) { | |
1033 | if (!strcmp(p, arg->value)) { | |
1034 | if (bit_flags) { | |
1035 | *bit_flags &= ~arg->clrmask; | |
1036 | *bit_flags |= arg->setmask; | |
1037 | } | |
1038 | return opt->arg_required; | |
1039 | } | |
1040 | } | |
1041 | ||
45b03d5e JM |
1042 | reiserfs_warning(s, "super-6506", |
1043 | "bad value \"%s\" for option \"%s\"\n", p, | |
bd4c625c | 1044 | opt->option_name); |
1da177e4 | 1045 | return -1; |
1da177e4 LT |
1046 | } |
1047 | ||
1048 | /* returns 0 if something is wrong in option string, 1 - otherwise */ | |
098297b2 JM |
1049 | static int reiserfs_parse_options(struct super_block *s, |
1050 | ||
1051 | /* string given via mount's -o */ | |
1052 | char *options, | |
1053 | ||
1054 | /* | |
1055 | * after the parsing phase, contains the | |
1056 | * collection of bitflags defining what | |
1057 | * mount options were selected. | |
1058 | */ | |
bd4c625c | 1059 | unsigned long *mount_options, |
098297b2 JM |
1060 | |
1061 | /* strtol-ed from NNN of resize=NNN */ | |
1062 | unsigned long *blocks, | |
bd4c625c | 1063 | char **jdev_name, |
00b44197 JK |
1064 | unsigned int *commit_max_age, |
1065 | char **qf_names, | |
1066 | unsigned int *qfmt) | |
1da177e4 | 1067 | { |
bd4c625c LT |
1068 | int c; |
1069 | char *arg = NULL; | |
1070 | char *pos; | |
1071 | opt_desc_t opts[] = { | |
098297b2 JM |
1072 | /* |
1073 | * Compatibility stuff, so that -o notail for old | |
1074 | * setups still work | |
1075 | */ | |
bd4c625c LT |
1076 | {"tails",.arg_required = 't',.values = tails}, |
1077 | {"notail",.clrmask = | |
1078 | (1 << REISERFS_LARGETAIL) | (1 << REISERFS_SMALLTAIL)}, | |
1079 | {"conv",.setmask = 1 << REISERFS_CONVERT}, | |
1080 | {"attrs",.setmask = 1 << REISERFS_ATTRS}, | |
1081 | {"noattrs",.clrmask = 1 << REISERFS_ATTRS}, | |
73422811 | 1082 | {"expose_privroot", .setmask = 1 << REISERFS_EXPOSE_PRIVROOT}, |
1da177e4 | 1083 | #ifdef CONFIG_REISERFS_FS_XATTR |
bd4c625c LT |
1084 | {"user_xattr",.setmask = 1 << REISERFS_XATTRS_USER}, |
1085 | {"nouser_xattr",.clrmask = 1 << REISERFS_XATTRS_USER}, | |
1da177e4 | 1086 | #else |
bd4c625c LT |
1087 | {"user_xattr",.setmask = 1 << REISERFS_UNSUPPORTED_OPT}, |
1088 | {"nouser_xattr",.clrmask = 1 << REISERFS_UNSUPPORTED_OPT}, | |
1da177e4 LT |
1089 | #endif |
1090 | #ifdef CONFIG_REISERFS_FS_POSIX_ACL | |
bd4c625c LT |
1091 | {"acl",.setmask = 1 << REISERFS_POSIXACL}, |
1092 | {"noacl",.clrmask = 1 << REISERFS_POSIXACL}, | |
1da177e4 | 1093 | #else |
bd4c625c LT |
1094 | {"acl",.setmask = 1 << REISERFS_UNSUPPORTED_OPT}, |
1095 | {"noacl",.clrmask = 1 << REISERFS_UNSUPPORTED_OPT}, | |
1da177e4 | 1096 | #endif |
cd02b966 | 1097 | {.option_name = "nolog"}, |
bd4c625c LT |
1098 | {"replayonly",.setmask = 1 << REPLAYONLY}, |
1099 | {"block-allocator",.arg_required = 'a',.values = balloc}, | |
1100 | {"data",.arg_required = 'd',.values = logging_mode}, | |
1101 | {"barrier",.arg_required = 'b',.values = barrier_mode}, | |
1102 | {"resize",.arg_required = 'r',.values = NULL}, | |
1103 | {"jdev",.arg_required = 'j',.values = NULL}, | |
1104 | {"nolargeio",.arg_required = 'w',.values = NULL}, | |
1105 | {"commit",.arg_required = 'c',.values = NULL}, | |
c3aa0776 JK |
1106 | {"usrquota",.setmask = 1 << REISERFS_USRQUOTA}, |
1107 | {"grpquota",.setmask = 1 << REISERFS_GRPQUOTA}, | |
1108 | {"noquota",.clrmask = 1 << REISERFS_USRQUOTA | 1 << REISERFS_GRPQUOTA}, | |
bd4c625c LT |
1109 | {"errors",.arg_required = 'e',.values = error_actions}, |
1110 | {"usrjquota",.arg_required = | |
1111 | 'u' | (1 << REISERFS_OPT_ALLOWEMPTY),.values = NULL}, | |
1112 | {"grpjquota",.arg_required = | |
1113 | 'g' | (1 << REISERFS_OPT_ALLOWEMPTY),.values = NULL}, | |
1114 | {"jqfmt",.arg_required = 'f',.values = NULL}, | |
cd02b966 | 1115 | {.option_name = NULL} |
bd4c625c LT |
1116 | }; |
1117 | ||
1118 | *blocks = 0; | |
1119 | if (!options || !*options) | |
098297b2 JM |
1120 | /* |
1121 | * use default configuration: create tails, journaling on, no | |
1122 | * conversion to newest format | |
1123 | */ | |
bd4c625c LT |
1124 | return 1; |
1125 | ||
1126 | for (pos = options; pos;) { | |
1127 | c = reiserfs_getopt(s, &pos, opts, &arg, mount_options); | |
1128 | if (c == -1) | |
1129 | /* wrong option is given */ | |
9a3bb301 | 1130 | return 0; |
1da177e4 | 1131 | |
bd4c625c LT |
1132 | if (c == 'r') { |
1133 | char *p; | |
1134 | ||
1135 | p = NULL; | |
1136 | /* "resize=NNN" or "resize=auto" */ | |
1137 | ||
1138 | if (!strcmp(arg, "auto")) { | |
1139 | /* From JFS code, to auto-get the size. */ | |
1140 | *blocks = | |
1141 | s->s_bdev->bd_inode->i_size >> s-> | |
1142 | s_blocksize_bits; | |
1143 | } else { | |
1144 | *blocks = simple_strtoul(arg, &p, 0); | |
1145 | if (*p != '\0') { | |
1146 | /* NNN does not look like a number */ | |
45b03d5e JM |
1147 | reiserfs_warning(s, "super-6507", |
1148 | "bad value %s for " | |
1149 | "-oresize\n", arg); | |
bd4c625c LT |
1150 | return 0; |
1151 | } | |
1152 | } | |
1da177e4 | 1153 | } |
1da177e4 | 1154 | |
bd4c625c LT |
1155 | if (c == 'c') { |
1156 | char *p = NULL; | |
1157 | unsigned long val = simple_strtoul(arg, &p, 0); | |
1158 | /* commit=NNN (time in seconds) */ | |
1159 | if (*p != '\0' || val >= (unsigned int)-1) { | |
45b03d5e JM |
1160 | reiserfs_warning(s, "super-6508", |
1161 | "bad value %s for -ocommit\n", | |
bd4c625c LT |
1162 | arg); |
1163 | return 0; | |
1164 | } | |
1165 | *commit_max_age = (unsigned int)val; | |
1da177e4 | 1166 | } |
1da177e4 | 1167 | |
bd4c625c | 1168 | if (c == 'w') { |
45b03d5e JM |
1169 | reiserfs_warning(s, "super-6509", "nolargeio option " |
1170 | "is no longer supported"); | |
36b756f2 | 1171 | return 0; |
1da177e4 | 1172 | } |
1da177e4 | 1173 | |
bd4c625c LT |
1174 | if (c == 'j') { |
1175 | if (arg && *arg && jdev_name) { | |
098297b2 JM |
1176 | /* Hm, already assigned? */ |
1177 | if (*jdev_name) { | |
45b03d5e JM |
1178 | reiserfs_warning(s, "super-6510", |
1179 | "journal device was " | |
1180 | "already specified to " | |
1181 | "be %s", *jdev_name); | |
bd4c625c LT |
1182 | return 0; |
1183 | } | |
1184 | *jdev_name = arg; | |
1185 | } | |
1da177e4 | 1186 | } |
bd4c625c LT |
1187 | #ifdef CONFIG_QUOTA |
1188 | if (c == 'u' || c == 'g') { | |
1189 | int qtype = c == 'u' ? USRQUOTA : GRPQUOTA; | |
1190 | ||
6929f891 | 1191 | if (sb_any_quota_loaded(s) && |
00b44197 | 1192 | (!*arg != !REISERFS_SB(s)->s_qf_names[qtype])) { |
45b03d5e JM |
1193 | reiserfs_warning(s, "super-6511", |
1194 | "cannot change journaled " | |
1195 | "quota options when quota " | |
1196 | "turned on."); | |
bd4c625c LT |
1197 | return 0; |
1198 | } | |
1199 | if (*arg) { /* Some filename specified? */ | |
1200 | if (REISERFS_SB(s)->s_qf_names[qtype] | |
1201 | && strcmp(REISERFS_SB(s)->s_qf_names[qtype], | |
1202 | arg)) { | |
45b03d5e JM |
1203 | reiserfs_warning(s, "super-6512", |
1204 | "%s quota file " | |
1205 | "already specified.", | |
bd4c625c LT |
1206 | QTYPE2NAME(qtype)); |
1207 | return 0; | |
1208 | } | |
1209 | if (strchr(arg, '/')) { | |
45b03d5e JM |
1210 | reiserfs_warning(s, "super-6513", |
1211 | "quotafile must be " | |
1212 | "on filesystem root."); | |
bd4c625c LT |
1213 | return 0; |
1214 | } | |
af591ad8 | 1215 | qf_names[qtype] = kstrdup(arg, GFP_KERNEL); |
00b44197 | 1216 | if (!qf_names[qtype]) { |
45b03d5e JM |
1217 | reiserfs_warning(s, "reiserfs-2502", |
1218 | "not enough memory " | |
1219 | "for storing " | |
1220 | "quotafile name."); | |
bd4c625c LT |
1221 | return 0; |
1222 | } | |
c3aa0776 JK |
1223 | if (qtype == USRQUOTA) |
1224 | *mount_options |= 1 << REISERFS_USRQUOTA; | |
1225 | else | |
1226 | *mount_options |= 1 << REISERFS_GRPQUOTA; | |
bd4c625c | 1227 | } else { |
00b44197 JK |
1228 | if (qf_names[qtype] != |
1229 | REISERFS_SB(s)->s_qf_names[qtype]) | |
1230 | kfree(qf_names[qtype]); | |
1231 | qf_names[qtype] = NULL; | |
c3aa0776 JK |
1232 | if (qtype == USRQUOTA) |
1233 | *mount_options &= ~(1 << REISERFS_USRQUOTA); | |
1234 | else | |
1235 | *mount_options &= ~(1 << REISERFS_GRPQUOTA); | |
bd4c625c | 1236 | } |
1da177e4 | 1237 | } |
bd4c625c LT |
1238 | if (c == 'f') { |
1239 | if (!strcmp(arg, "vfsold")) | |
00b44197 | 1240 | *qfmt = QFMT_VFS_OLD; |
bd4c625c | 1241 | else if (!strcmp(arg, "vfsv0")) |
00b44197 | 1242 | *qfmt = QFMT_VFS_V0; |
bd4c625c | 1243 | else { |
45b03d5e JM |
1244 | reiserfs_warning(s, "super-6514", |
1245 | "unknown quota format " | |
1246 | "specified."); | |
bd4c625c LT |
1247 | return 0; |
1248 | } | |
6929f891 | 1249 | if (sb_any_quota_loaded(s) && |
00b44197 | 1250 | *qfmt != REISERFS_SB(s)->s_jquota_fmt) { |
45b03d5e JM |
1251 | reiserfs_warning(s, "super-6515", |
1252 | "cannot change journaled " | |
1253 | "quota options when quota " | |
1254 | "turned on."); | |
00b44197 JK |
1255 | return 0; |
1256 | } | |
1da177e4 | 1257 | } |
bd4c625c LT |
1258 | #else |
1259 | if (c == 'u' || c == 'g' || c == 'f') { | |
45b03d5e JM |
1260 | reiserfs_warning(s, "reiserfs-2503", "journaled " |
1261 | "quota options not supported."); | |
bd4c625c | 1262 | return 0; |
1da177e4 | 1263 | } |
bd4c625c LT |
1264 | #endif |
1265 | } | |
1266 | ||
1267 | #ifdef CONFIG_QUOTA | |
00b44197 JK |
1268 | if (!REISERFS_SB(s)->s_jquota_fmt && !*qfmt |
1269 | && (qf_names[USRQUOTA] || qf_names[GRPQUOTA])) { | |
45b03d5e JM |
1270 | reiserfs_warning(s, "super-6515", |
1271 | "journaled quota format not specified."); | |
1da177e4 | 1272 | return 0; |
1da177e4 | 1273 | } |
c3aa0776 JK |
1274 | if ((!(*mount_options & (1 << REISERFS_USRQUOTA)) && |
1275 | sb_has_quota_loaded(s, USRQUOTA)) || | |
1276 | (!(*mount_options & (1 << REISERFS_GRPQUOTA)) && | |
1277 | sb_has_quota_loaded(s, GRPQUOTA))) { | |
45b03d5e JM |
1278 | reiserfs_warning(s, "super-6516", "quota options must " |
1279 | "be present when quota is turned on."); | |
bd4c625c | 1280 | return 0; |
1da177e4 LT |
1281 | } |
1282 | #endif | |
556a2a45 | 1283 | |
bd4c625c | 1284 | return 1; |
1da177e4 LT |
1285 | } |
1286 | ||
bd4c625c LT |
1287 | static void switch_data_mode(struct super_block *s, unsigned long mode) |
1288 | { | |
1289 | REISERFS_SB(s)->s_mount_opt &= ~((1 << REISERFS_DATA_LOG) | | |
1290 | (1 << REISERFS_DATA_ORDERED) | | |
1291 | (1 << REISERFS_DATA_WRITEBACK)); | |
1292 | REISERFS_SB(s)->s_mount_opt |= (1 << mode); | |
1da177e4 LT |
1293 | } |
1294 | ||
1295 | static void handle_data_mode(struct super_block *s, unsigned long mount_options) | |
1296 | { | |
bd4c625c LT |
1297 | if (mount_options & (1 << REISERFS_DATA_LOG)) { |
1298 | if (!reiserfs_data_log(s)) { | |
1299 | switch_data_mode(s, REISERFS_DATA_LOG); | |
1300 | reiserfs_info(s, "switching to journaled data mode\n"); | |
1301 | } | |
1302 | } else if (mount_options & (1 << REISERFS_DATA_ORDERED)) { | |
1303 | if (!reiserfs_data_ordered(s)) { | |
1304 | switch_data_mode(s, REISERFS_DATA_ORDERED); | |
1305 | reiserfs_info(s, "switching to ordered data mode\n"); | |
1306 | } | |
1307 | } else if (mount_options & (1 << REISERFS_DATA_WRITEBACK)) { | |
1308 | if (!reiserfs_data_writeback(s)) { | |
1309 | switch_data_mode(s, REISERFS_DATA_WRITEBACK); | |
1310 | reiserfs_info(s, "switching to writeback data mode\n"); | |
1311 | } | |
1312 | } | |
1da177e4 LT |
1313 | } |
1314 | ||
bd4c625c LT |
1315 | static void handle_barrier_mode(struct super_block *s, unsigned long bits) |
1316 | { | |
1317 | int flush = (1 << REISERFS_BARRIER_FLUSH); | |
1318 | int none = (1 << REISERFS_BARRIER_NONE); | |
1319 | int all_barrier = flush | none; | |
1320 | ||
1321 | if (bits & all_barrier) { | |
1322 | REISERFS_SB(s)->s_mount_opt &= ~all_barrier; | |
1323 | if (bits & flush) { | |
1324 | REISERFS_SB(s)->s_mount_opt |= flush; | |
1325 | printk("reiserfs: enabling write barrier flush mode\n"); | |
1326 | } else if (bits & none) { | |
1327 | REISERFS_SB(s)->s_mount_opt |= none; | |
1328 | printk("reiserfs: write barriers turned off\n"); | |
1329 | } | |
1330 | } | |
1da177e4 LT |
1331 | } |
1332 | ||
bd4c625c | 1333 | static void handle_attrs(struct super_block *s) |
1da177e4 | 1334 | { |
bd4c625c | 1335 | struct reiserfs_super_block *rs = SB_DISK_SUPER_BLOCK(s); |
1da177e4 | 1336 | |
bd4c625c LT |
1337 | if (reiserfs_attrs(s)) { |
1338 | if (old_format_only(s)) { | |
45b03d5e JM |
1339 | reiserfs_warning(s, "super-6517", "cannot support " |
1340 | "attributes on 3.5.x disk format"); | |
bd4c625c | 1341 | REISERFS_SB(s)->s_mount_opt &= ~(1 << REISERFS_ATTRS); |
1da177e4 LT |
1342 | return; |
1343 | } | |
bd4c625c | 1344 | if (!(le32_to_cpu(rs->s_flags) & reiserfs_attrs_cleared)) { |
45b03d5e JM |
1345 | reiserfs_warning(s, "super-6518", "cannot support " |
1346 | "attributes until flag is set in " | |
1347 | "super-block"); | |
bd4c625c | 1348 | REISERFS_SB(s)->s_mount_opt &= ~(1 << REISERFS_ATTRS); |
1da177e4 LT |
1349 | } |
1350 | } | |
1351 | } | |
1352 | ||
00b44197 JK |
1353 | #ifdef CONFIG_QUOTA |
1354 | static void handle_quota_files(struct super_block *s, char **qf_names, | |
1355 | unsigned int *qfmt) | |
1356 | { | |
1357 | int i; | |
1358 | ||
1359 | for (i = 0; i < MAXQUOTAS; i++) { | |
1360 | if (qf_names[i] != REISERFS_SB(s)->s_qf_names[i]) | |
1361 | kfree(REISERFS_SB(s)->s_qf_names[i]); | |
1362 | REISERFS_SB(s)->s_qf_names[i] = qf_names[i]; | |
1363 | } | |
a06d789b JK |
1364 | if (*qfmt) |
1365 | REISERFS_SB(s)->s_jquota_fmt = *qfmt; | |
00b44197 JK |
1366 | } |
1367 | #endif | |
1368 | ||
bd4c625c | 1369 | static int reiserfs_remount(struct super_block *s, int *mount_flags, char *arg) |
1da177e4 | 1370 | { |
bd4c625c LT |
1371 | struct reiserfs_super_block *rs; |
1372 | struct reiserfs_transaction_handle th; | |
1373 | unsigned long blocks; | |
1374 | unsigned long mount_options = REISERFS_SB(s)->s_mount_opt; | |
1375 | unsigned long safe_mask = 0; | |
1376 | unsigned int commit_max_age = (unsigned int)-1; | |
1377 | struct reiserfs_journal *journal = SB_JOURNAL(s); | |
cdf6ccc8 | 1378 | char *new_opts = kstrdup(arg, GFP_KERNEL); |
bd4c625c | 1379 | int err; |
00b44197 JK |
1380 | char *qf_names[MAXQUOTAS]; |
1381 | unsigned int qfmt = 0; | |
1da177e4 | 1382 | #ifdef CONFIG_QUOTA |
bd4c625c | 1383 | int i; |
8ebc4232 | 1384 | #endif |
00b44197 | 1385 | |
02b9984d | 1386 | sync_filesystem(s); |
8ebc4232 | 1387 | reiserfs_write_lock(s); |
00b44197 | 1388 | |
8ebc4232 | 1389 | #ifdef CONFIG_QUOTA |
00b44197 | 1390 | memcpy(qf_names, REISERFS_SB(s)->s_qf_names, sizeof(qf_names)); |
1da177e4 LT |
1391 | #endif |
1392 | ||
bd4c625c | 1393 | rs = SB_DISK_SUPER_BLOCK(s); |
1da177e4 | 1394 | |
bd4c625c | 1395 | if (!reiserfs_parse_options |
00b44197 JK |
1396 | (s, arg, &mount_options, &blocks, NULL, &commit_max_age, |
1397 | qf_names, &qfmt)) { | |
1da177e4 | 1398 | #ifdef CONFIG_QUOTA |
00b44197 JK |
1399 | for (i = 0; i < MAXQUOTAS; i++) |
1400 | if (qf_names[i] != REISERFS_SB(s)->s_qf_names[i]) | |
1401 | kfree(qf_names[i]); | |
1da177e4 | 1402 | #endif |
cdf6ccc8 | 1403 | err = -EINVAL; |
4c05141d | 1404 | goto out_err_unlock; |
bd4c625c | 1405 | } |
00b44197 JK |
1406 | #ifdef CONFIG_QUOTA |
1407 | handle_quota_files(s, qf_names, &qfmt); | |
1408 | #endif | |
bd4c625c LT |
1409 | |
1410 | handle_attrs(s); | |
1411 | ||
1412 | /* Add options that are safe here */ | |
1413 | safe_mask |= 1 << REISERFS_SMALLTAIL; | |
1414 | safe_mask |= 1 << REISERFS_LARGETAIL; | |
1415 | safe_mask |= 1 << REISERFS_NO_BORDER; | |
1416 | safe_mask |= 1 << REISERFS_NO_UNHASHED_RELOCATION; | |
1417 | safe_mask |= 1 << REISERFS_HASHED_RELOCATION; | |
1418 | safe_mask |= 1 << REISERFS_TEST4; | |
1419 | safe_mask |= 1 << REISERFS_ATTRS; | |
1420 | safe_mask |= 1 << REISERFS_XATTRS_USER; | |
1421 | safe_mask |= 1 << REISERFS_POSIXACL; | |
1422 | safe_mask |= 1 << REISERFS_BARRIER_FLUSH; | |
1423 | safe_mask |= 1 << REISERFS_BARRIER_NONE; | |
1424 | safe_mask |= 1 << REISERFS_ERROR_RO; | |
1425 | safe_mask |= 1 << REISERFS_ERROR_CONTINUE; | |
1426 | safe_mask |= 1 << REISERFS_ERROR_PANIC; | |
c3aa0776 JK |
1427 | safe_mask |= 1 << REISERFS_USRQUOTA; |
1428 | safe_mask |= 1 << REISERFS_GRPQUOTA; | |
bd4c625c | 1429 | |
098297b2 JM |
1430 | /* |
1431 | * Update the bitmask, taking care to keep | |
1432 | * the bits we're not allowed to change here | |
1433 | */ | |
bd4c625c LT |
1434 | REISERFS_SB(s)->s_mount_opt = |
1435 | (REISERFS_SB(s)-> | |
1436 | s_mount_opt & ~safe_mask) | (mount_options & safe_mask); | |
1437 | ||
1438 | if (commit_max_age != 0 && commit_max_age != (unsigned int)-1) { | |
1439 | journal->j_max_commit_age = commit_max_age; | |
1440 | journal->j_max_trans_age = commit_max_age; | |
1441 | } else if (commit_max_age == 0) { | |
1442 | /* 0 means restore defaults. */ | |
1443 | journal->j_max_commit_age = journal->j_default_max_commit_age; | |
1444 | journal->j_max_trans_age = JOURNAL_MAX_TRANS_AGE; | |
1445 | } | |
1446 | ||
1447 | if (blocks) { | |
cdf6ccc8 MS |
1448 | err = reiserfs_resize(s, blocks); |
1449 | if (err != 0) | |
4c05141d | 1450 | goto out_err_unlock; |
bd4c625c LT |
1451 | } |
1452 | ||
1453 | if (*mount_flags & MS_RDONLY) { | |
4c05141d | 1454 | reiserfs_write_unlock(s); |
bd4c625c LT |
1455 | reiserfs_xattr_init(s, *mount_flags); |
1456 | /* remount read-only */ | |
1457 | if (s->s_flags & MS_RDONLY) | |
1458 | /* it is read-only already */ | |
4c05141d | 1459 | goto out_ok_unlocked; |
c79d967d | 1460 | |
0f0dd62f CH |
1461 | err = dquot_suspend(s, -1); |
1462 | if (err < 0) | |
c79d967d | 1463 | goto out_err; |
c79d967d | 1464 | |
bd4c625c LT |
1465 | /* try to remount file system with read-only permissions */ |
1466 | if (sb_umount_state(rs) == REISERFS_VALID_FS | |
1467 | || REISERFS_SB(s)->s_mount_state != REISERFS_VALID_FS) { | |
4c05141d | 1468 | goto out_ok_unlocked; |
bd4c625c LT |
1469 | } |
1470 | ||
4c05141d JM |
1471 | reiserfs_write_lock(s); |
1472 | ||
bd4c625c LT |
1473 | err = journal_begin(&th, s, 10); |
1474 | if (err) | |
4c05141d | 1475 | goto out_err_unlock; |
bd4c625c LT |
1476 | |
1477 | /* Mounting a rw partition read-only. */ | |
1478 | reiserfs_prepare_for_journal(s, SB_BUFFER_WITH_SB(s), 1); | |
1479 | set_sb_umount_state(rs, REISERFS_SB(s)->s_mount_state); | |
1480 | journal_mark_dirty(&th, s, SB_BUFFER_WITH_SB(s)); | |
1481 | } else { | |
1482 | /* remount read-write */ | |
1483 | if (!(s->s_flags & MS_RDONLY)) { | |
4c05141d | 1484 | reiserfs_write_unlock(s); |
bd4c625c | 1485 | reiserfs_xattr_init(s, *mount_flags); |
4c05141d | 1486 | goto out_ok_unlocked; /* We are read-write already */ |
bd4c625c LT |
1487 | } |
1488 | ||
cdf6ccc8 MS |
1489 | if (reiserfs_is_journal_aborted(journal)) { |
1490 | err = journal->j_errno; | |
4c05141d | 1491 | goto out_err_unlock; |
cdf6ccc8 | 1492 | } |
bd4c625c LT |
1493 | |
1494 | handle_data_mode(s, mount_options); | |
1495 | handle_barrier_mode(s, mount_options); | |
1496 | REISERFS_SB(s)->s_mount_state = sb_umount_state(rs); | |
098297b2 JM |
1497 | |
1498 | /* now it is safe to call journal_begin */ | |
1499 | s->s_flags &= ~MS_RDONLY; | |
bd4c625c LT |
1500 | err = journal_begin(&th, s, 10); |
1501 | if (err) | |
4c05141d | 1502 | goto out_err_unlock; |
bd4c625c LT |
1503 | |
1504 | /* Mount a partition which is read-only, read-write */ | |
1505 | reiserfs_prepare_for_journal(s, SB_BUFFER_WITH_SB(s), 1); | |
1506 | REISERFS_SB(s)->s_mount_state = sb_umount_state(rs); | |
1507 | s->s_flags &= ~MS_RDONLY; | |
1508 | set_sb_umount_state(rs, REISERFS_ERROR_FS); | |
702d21c6 JM |
1509 | if (!old_format_only(s)) |
1510 | set_sb_mnt_count(rs, sb_mnt_count(rs) + 1); | |
bd4c625c LT |
1511 | /* mark_buffer_dirty (SB_BUFFER_WITH_SB (s), 1); */ |
1512 | journal_mark_dirty(&th, s, SB_BUFFER_WITH_SB(s)); | |
1513 | REISERFS_SB(s)->s_mount_state = REISERFS_VALID_FS; | |
1514 | } | |
1515 | /* this will force a full flush of all journal lists */ | |
1516 | SB_JOURNAL(s)->j_must_wait = 1; | |
706a5323 | 1517 | err = journal_end(&th, s); |
bd4c625c | 1518 | if (err) |
4c05141d | 1519 | goto out_err_unlock; |
bd4c625c | 1520 | |
4c05141d | 1521 | reiserfs_write_unlock(s); |
bd4c625c | 1522 | if (!(*mount_flags & MS_RDONLY)) { |
0f0dd62f | 1523 | dquot_resume(s, -1); |
3bb3e1fc | 1524 | reiserfs_write_lock(s); |
bd4c625c | 1525 | finish_unfinished(s); |
4c05141d | 1526 | reiserfs_write_unlock(s); |
bd4c625c LT |
1527 | reiserfs_xattr_init(s, *mount_flags); |
1528 | } | |
1529 | ||
4c05141d | 1530 | out_ok_unlocked: |
2a32cebd | 1531 | replace_mount_options(s, new_opts); |
bd4c625c | 1532 | return 0; |
cdf6ccc8 | 1533 | |
4c05141d | 1534 | out_err_unlock: |
3bb3e1fc | 1535 | reiserfs_write_unlock(s); |
cdf6ccc8 MS |
1536 | out_err: |
1537 | kfree(new_opts); | |
1538 | return err; | |
1da177e4 LT |
1539 | } |
1540 | ||
bd4c625c | 1541 | static int read_super_block(struct super_block *s, int offset) |
1da177e4 | 1542 | { |
bd4c625c LT |
1543 | struct buffer_head *bh; |
1544 | struct reiserfs_super_block *rs; | |
1545 | int fs_blocksize; | |
1da177e4 | 1546 | |
bd4c625c LT |
1547 | bh = sb_bread(s, offset / s->s_blocksize); |
1548 | if (!bh) { | |
45b03d5e | 1549 | reiserfs_warning(s, "sh-2006", |
bd4c625c | 1550 | "bread failed (dev %s, block %lu, size %lu)", |
2ccdc413 | 1551 | s->s_id, offset / s->s_blocksize, |
bd4c625c LT |
1552 | s->s_blocksize); |
1553 | return 1; | |
1554 | } | |
1da177e4 | 1555 | |
bd4c625c LT |
1556 | rs = (struct reiserfs_super_block *)bh->b_data; |
1557 | if (!is_any_reiserfs_magic_string(rs)) { | |
1558 | brelse(bh); | |
1559 | return 1; | |
1560 | } | |
098297b2 JM |
1561 | /* |
1562 | * ok, reiserfs signature (old or new) found in at the given offset | |
1563 | */ | |
bd4c625c LT |
1564 | fs_blocksize = sb_blocksize(rs); |
1565 | brelse(bh); | |
1566 | sb_set_blocksize(s, fs_blocksize); | |
1da177e4 | 1567 | |
bd4c625c LT |
1568 | bh = sb_bread(s, offset / s->s_blocksize); |
1569 | if (!bh) { | |
45b03d5e JM |
1570 | reiserfs_warning(s, "sh-2007", |
1571 | "bread failed (dev %s, block %lu, size %lu)", | |
2ccdc413 | 1572 | s->s_id, offset / s->s_blocksize, |
bd4c625c LT |
1573 | s->s_blocksize); |
1574 | return 1; | |
1575 | } | |
1da177e4 | 1576 | |
bd4c625c LT |
1577 | rs = (struct reiserfs_super_block *)bh->b_data; |
1578 | if (sb_blocksize(rs) != s->s_blocksize) { | |
45b03d5e JM |
1579 | reiserfs_warning(s, "sh-2011", "can't find a reiserfs " |
1580 | "filesystem on (dev %s, block %Lu, size %lu)", | |
2ccdc413 | 1581 | s->s_id, |
bd4c625c LT |
1582 | (unsigned long long)bh->b_blocknr, |
1583 | s->s_blocksize); | |
1584 | brelse(bh); | |
1585 | return 1; | |
1586 | } | |
1da177e4 | 1587 | |
bd4c625c LT |
1588 | if (rs->s_v1.s_root_block == cpu_to_le32(-1)) { |
1589 | brelse(bh); | |
45b03d5e JM |
1590 | reiserfs_warning(s, "super-6519", "Unfinished reiserfsck " |
1591 | "--rebuild-tree run detected. Please run\n" | |
1592 | "reiserfsck --rebuild-tree and wait for a " | |
1593 | "completion. If that fails\n" | |
bd4c625c LT |
1594 | "get newer reiserfsprogs package"); |
1595 | return 1; | |
1da177e4 | 1596 | } |
1da177e4 | 1597 | |
bd4c625c LT |
1598 | SB_BUFFER_WITH_SB(s) = bh; |
1599 | SB_DISK_SUPER_BLOCK(s) = rs; | |
1600 | ||
098297b2 JM |
1601 | /* |
1602 | * magic is of non-standard journal filesystem, look at s_version to | |
1603 | * find which format is in use | |
1604 | */ | |
bd4c625c | 1605 | if (is_reiserfs_jr(rs)) { |
bd4c625c | 1606 | if (sb_version(rs) == REISERFS_VERSION_2) |
1d889d99 JM |
1607 | reiserfs_info(s, "found reiserfs format \"3.6\"" |
1608 | " with non-standard journal\n"); | |
bd4c625c | 1609 | else if (sb_version(rs) == REISERFS_VERSION_1) |
1d889d99 JM |
1610 | reiserfs_info(s, "found reiserfs format \"3.5\"" |
1611 | " with non-standard journal\n"); | |
bd4c625c | 1612 | else { |
45b03d5e JM |
1613 | reiserfs_warning(s, "sh-2012", "found unknown " |
1614 | "format \"%u\" of reiserfs with " | |
1615 | "non-standard magic", sb_version(rs)); | |
bd4c625c LT |
1616 | return 1; |
1617 | } | |
1618 | } else | |
098297b2 JM |
1619 | /* |
1620 | * s_version of standard format may contain incorrect | |
1621 | * information, so we just look at the magic string | |
1622 | */ | |
bd4c625c LT |
1623 | reiserfs_info(s, |
1624 | "found reiserfs format \"%s\" with standard journal\n", | |
1625 | is_reiserfs_3_5(rs) ? "3.5" : "3.6"); | |
1626 | ||
1627 | s->s_op = &reiserfs_sops; | |
1628 | s->s_export_op = &reiserfs_export_ops; | |
1da177e4 | 1629 | #ifdef CONFIG_QUOTA |
bd4c625c LT |
1630 | s->s_qcop = &reiserfs_qctl_operations; |
1631 | s->dq_op = &reiserfs_quota_operations; | |
1da177e4 LT |
1632 | #endif |
1633 | ||
098297b2 JM |
1634 | /* |
1635 | * new format is limited by the 32 bit wide i_blocks field, want to | |
1636 | * be one full block below that. | |
bd4c625c LT |
1637 | */ |
1638 | s->s_maxbytes = (512LL << 32) - s->s_blocksize; | |
1639 | return 0; | |
1da177e4 LT |
1640 | } |
1641 | ||
1da177e4 | 1642 | /* after journal replay, reread all bitmap and super blocks */ |
bd4c625c LT |
1643 | static int reread_meta_blocks(struct super_block *s) |
1644 | { | |
bd4c625c LT |
1645 | ll_rw_block(READ, 1, &(SB_BUFFER_WITH_SB(s))); |
1646 | wait_on_buffer(SB_BUFFER_WITH_SB(s)); | |
1647 | if (!buffer_uptodate(SB_BUFFER_WITH_SB(s))) { | |
45b03d5e | 1648 | reiserfs_warning(s, "reiserfs-2504", "error reading the super"); |
bd4c625c LT |
1649 | return 1; |
1650 | } | |
1da177e4 | 1651 | |
bd4c625c | 1652 | return 0; |
bd4c625c | 1653 | } |
1da177e4 | 1654 | |
098297b2 | 1655 | /* hash detection stuff */ |
1da177e4 | 1656 | |
098297b2 JM |
1657 | /* |
1658 | * if root directory is empty - we set default - Yura's - hash and | |
1659 | * warn about it | |
1660 | * FIXME: we look for only one name in a directory. If tea and yura | |
1661 | * both have the same value - we ask user to send report to the | |
1662 | * mailing list | |
1663 | */ | |
bd4c625c | 1664 | static __u32 find_hash_out(struct super_block *s) |
1da177e4 | 1665 | { |
bd4c625c LT |
1666 | int retval; |
1667 | struct inode *inode; | |
1668 | struct cpu_key key; | |
1669 | INITIALIZE_PATH(path); | |
1670 | struct reiserfs_dir_entry de; | |
1671 | __u32 hash = DEFAULT_HASH; | |
1672 | ||
1673 | inode = s->s_root->d_inode; | |
1674 | ||
098297b2 | 1675 | do { /* Some serious "goto"-hater was there ;) */ |
bd4c625c LT |
1676 | u32 teahash, r5hash, yurahash; |
1677 | ||
1678 | make_cpu_key(&key, inode, ~0, TYPE_DIRENTRY, 3); | |
1679 | retval = search_by_entry_key(s, &key, &path, &de); | |
1680 | if (retval == IO_ERROR) { | |
1681 | pathrelse(&path); | |
1682 | return UNSET_HASH; | |
1683 | } | |
1684 | if (retval == NAME_NOT_FOUND) | |
1685 | de.de_entry_num--; | |
1686 | set_de_name_and_namelen(&de); | |
1687 | if (deh_offset(&(de.de_deh[de.de_entry_num])) == DOT_DOT_OFFSET) { | |
1688 | /* allow override in this case */ | |
1689 | if (reiserfs_rupasov_hash(s)) { | |
1690 | hash = YURA_HASH; | |
1691 | } | |
1d889d99 JM |
1692 | reiserfs_info(s, "FS seems to be empty, autodetect " |
1693 | "is using the default hash\n"); | |
bd4c625c LT |
1694 | break; |
1695 | } | |
1696 | r5hash = GET_HASH_VALUE(r5_hash(de.de_name, de.de_namelen)); | |
1697 | teahash = GET_HASH_VALUE(keyed_hash(de.de_name, de.de_namelen)); | |
1698 | yurahash = GET_HASH_VALUE(yura_hash(de.de_name, de.de_namelen)); | |
1699 | if (((teahash == r5hash) | |
1700 | && | |
1701 | (GET_HASH_VALUE(deh_offset(&(de.de_deh[de.de_entry_num]))) | |
1702 | == r5hash)) || ((teahash == yurahash) | |
1703 | && (yurahash == | |
1704 | GET_HASH_VALUE(deh_offset | |
1705 | (& | |
1706 | (de. | |
1707 | de_deh[de. | |
1708 | de_entry_num]))))) | |
1709 | || ((r5hash == yurahash) | |
1710 | && (yurahash == | |
1711 | GET_HASH_VALUE(deh_offset | |
1712 | (&(de.de_deh[de.de_entry_num])))))) { | |
45b03d5e JM |
1713 | reiserfs_warning(s, "reiserfs-2506", "Unable to " |
1714 | "automatically detect hash function. " | |
1715 | "Please mount with -o " | |
1716 | "hash={tea,rupasov,r5}"); | |
bd4c625c LT |
1717 | hash = UNSET_HASH; |
1718 | break; | |
1719 | } | |
1720 | if (GET_HASH_VALUE(deh_offset(&(de.de_deh[de.de_entry_num]))) == | |
1721 | yurahash) | |
1722 | hash = YURA_HASH; | |
1723 | else if (GET_HASH_VALUE | |
1724 | (deh_offset(&(de.de_deh[de.de_entry_num]))) == teahash) | |
1725 | hash = TEA_HASH; | |
1726 | else if (GET_HASH_VALUE | |
1727 | (deh_offset(&(de.de_deh[de.de_entry_num]))) == r5hash) | |
1728 | hash = R5_HASH; | |
1729 | else { | |
45b03d5e JM |
1730 | reiserfs_warning(s, "reiserfs-2506", |
1731 | "Unrecognised hash function"); | |
bd4c625c LT |
1732 | hash = UNSET_HASH; |
1733 | } | |
1734 | } while (0); | |
1735 | ||
1736 | pathrelse(&path); | |
1737 | return hash; | |
1da177e4 LT |
1738 | } |
1739 | ||
098297b2 | 1740 | /* finds out which hash names are sorted with */ |
bd4c625c | 1741 | static int what_hash(struct super_block *s) |
1da177e4 | 1742 | { |
bd4c625c LT |
1743 | __u32 code; |
1744 | ||
1745 | code = sb_hash_function_code(SB_DISK_SUPER_BLOCK(s)); | |
1746 | ||
098297b2 JM |
1747 | /* |
1748 | * reiserfs_hash_detect() == true if any of the hash mount options | |
1749 | * were used. We must check them to make sure the user isn't | |
1750 | * using a bad hash value | |
bd4c625c LT |
1751 | */ |
1752 | if (code == UNSET_HASH || reiserfs_hash_detect(s)) | |
1753 | code = find_hash_out(s); | |
1754 | ||
1755 | if (code != UNSET_HASH && reiserfs_hash_detect(s)) { | |
098297b2 JM |
1756 | /* |
1757 | * detection has found the hash, and we must check against the | |
1758 | * mount options | |
bd4c625c LT |
1759 | */ |
1760 | if (reiserfs_rupasov_hash(s) && code != YURA_HASH) { | |
45b03d5e JM |
1761 | reiserfs_warning(s, "reiserfs-2507", |
1762 | "Error, %s hash detected, " | |
bd4c625c LT |
1763 | "unable to force rupasov hash", |
1764 | reiserfs_hashname(code)); | |
1765 | code = UNSET_HASH; | |
1766 | } else if (reiserfs_tea_hash(s) && code != TEA_HASH) { | |
45b03d5e JM |
1767 | reiserfs_warning(s, "reiserfs-2508", |
1768 | "Error, %s hash detected, " | |
bd4c625c LT |
1769 | "unable to force tea hash", |
1770 | reiserfs_hashname(code)); | |
1771 | code = UNSET_HASH; | |
1772 | } else if (reiserfs_r5_hash(s) && code != R5_HASH) { | |
45b03d5e JM |
1773 | reiserfs_warning(s, "reiserfs-2509", |
1774 | "Error, %s hash detected, " | |
bd4c625c LT |
1775 | "unable to force r5 hash", |
1776 | reiserfs_hashname(code)); | |
1777 | code = UNSET_HASH; | |
1778 | } | |
1779 | } else { | |
098297b2 JM |
1780 | /* |
1781 | * find_hash_out was not called or | |
1782 | * could not determine the hash | |
1783 | */ | |
bd4c625c LT |
1784 | if (reiserfs_rupasov_hash(s)) { |
1785 | code = YURA_HASH; | |
1786 | } else if (reiserfs_tea_hash(s)) { | |
1787 | code = TEA_HASH; | |
1788 | } else if (reiserfs_r5_hash(s)) { | |
1789 | code = R5_HASH; | |
1790 | } | |
1791 | } | |
1792 | ||
098297b2 JM |
1793 | /* |
1794 | * if we are mounted RW, and we have a new valid hash code, update | |
1795 | * the super | |
bd4c625c LT |
1796 | */ |
1797 | if (code != UNSET_HASH && | |
1798 | !(s->s_flags & MS_RDONLY) && | |
1799 | code != sb_hash_function_code(SB_DISK_SUPER_BLOCK(s))) { | |
1800 | set_sb_hash_function_code(SB_DISK_SUPER_BLOCK(s), code); | |
1801 | } | |
1802 | return code; | |
1da177e4 LT |
1803 | } |
1804 | ||
098297b2 | 1805 | /* return pointer to appropriate function */ |
bd4c625c | 1806 | static hashf_t hash_function(struct super_block *s) |
1da177e4 | 1807 | { |
bd4c625c LT |
1808 | switch (what_hash(s)) { |
1809 | case TEA_HASH: | |
1810 | reiserfs_info(s, "Using tea hash to sort names\n"); | |
1811 | return keyed_hash; | |
1812 | case YURA_HASH: | |
1813 | reiserfs_info(s, "Using rupasov hash to sort names\n"); | |
1814 | return yura_hash; | |
1815 | case R5_HASH: | |
1816 | reiserfs_info(s, "Using r5 hash to sort names\n"); | |
1817 | return r5_hash; | |
1818 | } | |
1819 | return NULL; | |
1da177e4 LT |
1820 | } |
1821 | ||
098297b2 | 1822 | /* this is used to set up correct value for old partitions */ |
bd4c625c | 1823 | static int function2code(hashf_t func) |
1da177e4 | 1824 | { |
bd4c625c LT |
1825 | if (func == keyed_hash) |
1826 | return TEA_HASH; | |
1827 | if (func == yura_hash) | |
1828 | return YURA_HASH; | |
1829 | if (func == r5_hash) | |
1830 | return R5_HASH; | |
1da177e4 | 1831 | |
098297b2 | 1832 | BUG(); /* should never happen */ |
1da177e4 | 1833 | |
bd4c625c | 1834 | return 0; |
1da177e4 LT |
1835 | } |
1836 | ||
45b03d5e | 1837 | #define SWARN(silent, s, id, ...) \ |
1da177e4 | 1838 | if (!(silent)) \ |
45b03d5e | 1839 | reiserfs_warning(s, id, __VA_ARGS__) |
1da177e4 | 1840 | |
bd4c625c | 1841 | static int reiserfs_fill_super(struct super_block *s, void *data, int silent) |
1da177e4 | 1842 | { |
bd4c625c | 1843 | struct inode *root_inode; |
bd4c625c LT |
1844 | struct reiserfs_transaction_handle th; |
1845 | int old_format = 0; | |
1846 | unsigned long blocks; | |
1847 | unsigned int commit_max_age = 0; | |
1848 | int jinit_done = 0; | |
1849 | struct reiserfs_iget_args args; | |
1850 | struct reiserfs_super_block *rs; | |
1851 | char *jdev_name; | |
1852 | struct reiserfs_sb_info *sbi; | |
1853 | int errval = -EINVAL; | |
00b44197 JK |
1854 | char *qf_names[MAXQUOTAS] = {}; |
1855 | unsigned int qfmt = 0; | |
bd4c625c | 1856 | |
cdf6ccc8 MS |
1857 | save_mount_options(s, data); |
1858 | ||
01afb213 | 1859 | sbi = kzalloc(sizeof(struct reiserfs_sb_info), GFP_KERNEL); |
b7b7fa43 JM |
1860 | if (!sbi) |
1861 | return -ENOMEM; | |
bd4c625c | 1862 | s->s_fs_info = sbi; |
bd4c625c | 1863 | /* Set default values for options: non-aggressive tails, RO on errors */ |
efaa33eb AB |
1864 | sbi->s_mount_opt |= (1 << REISERFS_SMALLTAIL); |
1865 | sbi->s_mount_opt |= (1 << REISERFS_ERROR_RO); | |
1866 | sbi->s_mount_opt |= (1 << REISERFS_BARRIER_FLUSH); | |
098297b2 | 1867 | /* no preallocation minimum, be smart in reiserfs_file_write instead */ |
efaa33eb | 1868 | sbi->s_alloc_options.preallocmin = 0; |
bd4c625c | 1869 | /* Preallocate by 16 blocks (17-1) at once */ |
efaa33eb | 1870 | sbi->s_alloc_options.preallocsize = 17; |
bd4c625c LT |
1871 | /* setup default block allocator options */ |
1872 | reiserfs_init_alloc_options(s); | |
1873 | ||
033369d1 AB |
1874 | spin_lock_init(&sbi->old_work_lock); |
1875 | INIT_DELAYED_WORK(&sbi->old_work, flush_old_commits); | |
efaa33eb AB |
1876 | mutex_init(&sbi->lock); |
1877 | sbi->lock_depth = -1; | |
8ebc4232 | 1878 | |
797d9016 JM |
1879 | sbi->commit_wq = alloc_workqueue("reiserfs/%s", WQ_MEM_RECLAIM, 0, |
1880 | s->s_id); | |
1881 | if (!sbi->commit_wq) { | |
1882 | SWARN(silent, s, "", "Cannot allocate commit workqueue"); | |
1883 | errval = -ENOMEM; | |
1884 | goto error_unlocked; | |
1885 | } | |
1886 | ||
bd4c625c LT |
1887 | jdev_name = NULL; |
1888 | if (reiserfs_parse_options | |
1889 | (s, (char *)data, &(sbi->s_mount_opt), &blocks, &jdev_name, | |
00b44197 | 1890 | &commit_max_age, qf_names, &qfmt) == 0) { |
f32485be | 1891 | goto error_unlocked; |
bd4c625c | 1892 | } |
c3aa0776 | 1893 | if (jdev_name && jdev_name[0]) { |
efaa33eb AB |
1894 | sbi->s_jdev = kstrdup(jdev_name, GFP_KERNEL); |
1895 | if (!sbi->s_jdev) { | |
c3aa0776 JK |
1896 | SWARN(silent, s, "", "Cannot allocate memory for " |
1897 | "journal device name"); | |
1898 | goto error; | |
1899 | } | |
1900 | } | |
00b44197 JK |
1901 | #ifdef CONFIG_QUOTA |
1902 | handle_quota_files(s, qf_names, &qfmt); | |
1903 | #endif | |
bd4c625c LT |
1904 | |
1905 | if (blocks) { | |
45b03d5e | 1906 | SWARN(silent, s, "jmacd-7", "resize option for remount only"); |
f32485be | 1907 | goto error_unlocked; |
bd4c625c LT |
1908 | } |
1909 | ||
098297b2 JM |
1910 | /* |
1911 | * try old format (undistributed bitmap, super block in 8-th 1k | |
1912 | * block of a device) | |
1913 | */ | |
bd4c625c LT |
1914 | if (!read_super_block(s, REISERFS_OLD_DISK_OFFSET_IN_BYTES)) |
1915 | old_format = 1; | |
098297b2 JM |
1916 | |
1917 | /* | |
1918 | * try new format (64-th 1k block), which can contain reiserfs | |
1919 | * super block | |
1920 | */ | |
bd4c625c | 1921 | else if (read_super_block(s, REISERFS_DISK_OFFSET_IN_BYTES)) { |
45b03d5e | 1922 | SWARN(silent, s, "sh-2021", "can not find reiserfs on %s", |
2ccdc413 | 1923 | s->s_id); |
f32485be | 1924 | goto error_unlocked; |
bd4c625c LT |
1925 | } |
1926 | ||
1927 | rs = SB_DISK_SUPER_BLOCK(s); | |
098297b2 JM |
1928 | /* |
1929 | * Let's do basic sanity check to verify that underlying device is not | |
1930 | * smaller than the filesystem. If the check fails then abort and | |
1931 | * scream, because bad stuff will happen otherwise. | |
1932 | */ | |
bd4c625c LT |
1933 | if (s->s_bdev && s->s_bdev->bd_inode |
1934 | && i_size_read(s->s_bdev->bd_inode) < | |
1935 | sb_block_count(rs) * sb_blocksize(rs)) { | |
45b03d5e JM |
1936 | SWARN(silent, s, "", "Filesystem cannot be " |
1937 | "mounted because it is bigger than the device"); | |
1938 | SWARN(silent, s, "", "You may need to run fsck " | |
1939 | "or increase size of your LVM partition"); | |
1940 | SWARN(silent, s, "", "Or may be you forgot to " | |
1941 | "reboot after fdisk when it told you to"); | |
f32485be | 1942 | goto error_unlocked; |
bd4c625c LT |
1943 | } |
1944 | ||
1945 | sbi->s_mount_state = SB_REISERFS_STATE(s); | |
1946 | sbi->s_mount_state = REISERFS_VALID_FS; | |
1947 | ||
6f01046b | 1948 | if ((errval = reiserfs_init_bitmap_cache(s))) { |
45b03d5e | 1949 | SWARN(silent, s, "jmacd-8", "unable to read bitmap"); |
f32485be | 1950 | goto error_unlocked; |
bd4c625c | 1951 | } |
f32485be | 1952 | |
d2c89a42 | 1953 | errval = -EINVAL; |
1da177e4 | 1954 | #ifdef CONFIG_REISERFS_CHECK |
45b03d5e JM |
1955 | SWARN(silent, s, "", "CONFIG_REISERFS_CHECK is set ON"); |
1956 | SWARN(silent, s, "", "- it is slow mode for debugging."); | |
1da177e4 LT |
1957 | #endif |
1958 | ||
bd4c625c LT |
1959 | /* make data=ordered the default */ |
1960 | if (!reiserfs_data_log(s) && !reiserfs_data_ordered(s) && | |
1961 | !reiserfs_data_writeback(s)) { | |
efaa33eb | 1962 | sbi->s_mount_opt |= (1 << REISERFS_DATA_ORDERED); |
bd4c625c LT |
1963 | } |
1964 | ||
1965 | if (reiserfs_data_log(s)) { | |
1966 | reiserfs_info(s, "using journaled data mode\n"); | |
1967 | } else if (reiserfs_data_ordered(s)) { | |
1968 | reiserfs_info(s, "using ordered data mode\n"); | |
1969 | } else { | |
1970 | reiserfs_info(s, "using writeback data mode\n"); | |
1971 | } | |
1972 | if (reiserfs_barrier_flush(s)) { | |
1973 | printk("reiserfs: using flush barriers\n"); | |
1974 | } | |
f32485be | 1975 | |
37c69b98 FW |
1976 | if (journal_init(s, jdev_name, old_format, commit_max_age)) { |
1977 | SWARN(silent, s, "sh-2022", | |
1978 | "unable to initialize journal space"); | |
1979 | goto error_unlocked; | |
1980 | } else { | |
098297b2 JM |
1981 | /* |
1982 | * once this is set, journal_release must be called | |
1983 | * if we error out of the mount | |
1984 | */ | |
1985 | jinit_done = 1; | |
37c69b98 FW |
1986 | } |
1987 | ||
bd4c625c | 1988 | if (reread_meta_blocks(s)) { |
45b03d5e JM |
1989 | SWARN(silent, s, "jmacd-9", |
1990 | "unable to reread meta blocks after journal init"); | |
9b467e6e | 1991 | goto error_unlocked; |
bd4c625c LT |
1992 | } |
1993 | ||
1994 | if (replay_only(s)) | |
9b467e6e | 1995 | goto error_unlocked; |
bd4c625c LT |
1996 | |
1997 | if (bdev_read_only(s->s_bdev) && !(s->s_flags & MS_RDONLY)) { | |
45b03d5e JM |
1998 | SWARN(silent, s, "clm-7000", |
1999 | "Detected readonly device, marking FS readonly"); | |
bd4c625c LT |
2000 | s->s_flags |= MS_RDONLY; |
2001 | } | |
2002 | args.objectid = REISERFS_ROOT_OBJECTID; | |
2003 | args.dirid = REISERFS_ROOT_PARENT_OBJECTID; | |
2004 | root_inode = | |
2005 | iget5_locked(s, REISERFS_ROOT_OBJECTID, reiserfs_find_actor, | |
2006 | reiserfs_init_locked_inode, (void *)(&args)); | |
2007 | if (!root_inode) { | |
45b03d5e | 2008 | SWARN(silent, s, "jmacd-10", "get root inode failed"); |
9b467e6e | 2009 | goto error_unlocked; |
bd4c625c LT |
2010 | } |
2011 | ||
9b467e6e FW |
2012 | /* |
2013 | * This path assumed to be called with the BKL in the old times. | |
2014 | * Now we have inherited the big reiserfs lock from it and many | |
2015 | * reiserfs helpers called in the mount path and elsewhere require | |
2016 | * this lock to be held even if it's not always necessary. Let's be | |
2017 | * conservative and hold it early. The window can be reduced after | |
2018 | * careful review of the code. | |
2019 | */ | |
2020 | reiserfs_write_lock(s); | |
2021 | ||
bd4c625c LT |
2022 | if (root_inode->i_state & I_NEW) { |
2023 | reiserfs_read_locked_inode(root_inode, &args); | |
2024 | unlock_new_inode(root_inode); | |
2025 | } | |
2026 | ||
48fde701 AV |
2027 | s->s_root = d_make_root(root_inode); |
2028 | if (!s->s_root) | |
bd4c625c | 2029 | goto error; |
098297b2 | 2030 | /* define and initialize hash function */ |
bd4c625c LT |
2031 | sbi->s_hash_function = hash_function(s); |
2032 | if (sbi->s_hash_function == NULL) { | |
2033 | dput(s->s_root); | |
2034 | s->s_root = NULL; | |
2035 | goto error; | |
2036 | } | |
2037 | ||
2038 | if (is_reiserfs_3_5(rs) | |
2039 | || (is_reiserfs_jr(rs) && SB_VERSION(s) == REISERFS_VERSION_1)) | |
2040 | set_bit(REISERFS_3_5, &(sbi->s_properties)); | |
e1fabd3c JM |
2041 | else if (old_format) |
2042 | set_bit(REISERFS_OLD_FORMAT, &(sbi->s_properties)); | |
bd4c625c LT |
2043 | else |
2044 | set_bit(REISERFS_3_6, &(sbi->s_properties)); | |
2045 | ||
2046 | if (!(s->s_flags & MS_RDONLY)) { | |
2047 | ||
2048 | errval = journal_begin(&th, s, 1); | |
2049 | if (errval) { | |
2050 | dput(s->s_root); | |
2051 | s->s_root = NULL; | |
2052 | goto error; | |
2053 | } | |
2054 | reiserfs_prepare_for_journal(s, SB_BUFFER_WITH_SB(s), 1); | |
2055 | ||
2056 | set_sb_umount_state(rs, REISERFS_ERROR_FS); | |
2057 | set_sb_fs_state(rs, 0); | |
2058 | ||
098297b2 JM |
2059 | /* |
2060 | * Clear out s_bmap_nr if it would wrap. We can handle this | |
cb680c1b JM |
2061 | * case, but older revisions can't. This will cause the |
2062 | * file system to fail mount on those older implementations, | |
098297b2 JM |
2063 | * avoiding corruption. -jeffm |
2064 | */ | |
cb680c1b JM |
2065 | if (bmap_would_wrap(reiserfs_bmap_count(s)) && |
2066 | sb_bmap_nr(rs) != 0) { | |
45b03d5e | 2067 | reiserfs_warning(s, "super-2030", "This file system " |
cb680c1b JM |
2068 | "claims to use %u bitmap blocks in " |
2069 | "its super block, but requires %u. " | |
2070 | "Clearing to zero.", sb_bmap_nr(rs), | |
2071 | reiserfs_bmap_count(s)); | |
2072 | ||
2073 | set_sb_bmap_nr(rs, 0); | |
2074 | } | |
2075 | ||
bd4c625c | 2076 | if (old_format_only(s)) { |
098297b2 JM |
2077 | /* |
2078 | * filesystem of format 3.5 either with standard | |
2079 | * or non-standard journal | |
2080 | */ | |
bd4c625c LT |
2081 | if (convert_reiserfs(s)) { |
2082 | /* and -o conv is given */ | |
2083 | if (!silent) | |
2084 | reiserfs_info(s, | |
2085 | "converting 3.5 filesystem to the 3.6 format"); | |
2086 | ||
2087 | if (is_reiserfs_3_5(rs)) | |
098297b2 JM |
2088 | /* |
2089 | * put magic string of 3.6 format. | |
2090 | * 2.2 will not be able to | |
2091 | * mount this filesystem anymore | |
2092 | */ | |
bd4c625c LT |
2093 | memcpy(rs->s_v1.s_magic, |
2094 | reiserfs_3_6_magic_string, | |
2095 | sizeof | |
2096 | (reiserfs_3_6_magic_string)); | |
2097 | ||
2098 | set_sb_version(rs, REISERFS_VERSION_2); | |
2099 | reiserfs_convert_objectid_map_v1(s); | |
2100 | set_bit(REISERFS_3_6, &(sbi->s_properties)); | |
2101 | clear_bit(REISERFS_3_5, &(sbi->s_properties)); | |
2102 | } else if (!silent) { | |
2103 | reiserfs_info(s, "using 3.5.x disk format\n"); | |
2104 | } | |
702d21c6 JM |
2105 | } else |
2106 | set_sb_mnt_count(rs, sb_mnt_count(rs) + 1); | |
2107 | ||
bd4c625c LT |
2108 | |
2109 | journal_mark_dirty(&th, s, SB_BUFFER_WITH_SB(s)); | |
706a5323 | 2110 | errval = journal_end(&th, s); |
bd4c625c LT |
2111 | if (errval) { |
2112 | dput(s->s_root); | |
2113 | s->s_root = NULL; | |
2114 | goto error; | |
2115 | } | |
2116 | ||
4c05141d | 2117 | reiserfs_write_unlock(s); |
edcc37a0 AV |
2118 | if ((errval = reiserfs_lookup_privroot(s)) || |
2119 | (errval = reiserfs_xattr_init(s, s->s_flags))) { | |
bd4c625c LT |
2120 | dput(s->s_root); |
2121 | s->s_root = NULL; | |
4c05141d | 2122 | goto error_unlocked; |
bd4c625c | 2123 | } |
4c05141d | 2124 | reiserfs_write_lock(s); |
bd4c625c | 2125 | |
098297b2 JM |
2126 | /* |
2127 | * look for files which were to be removed in previous session | |
2128 | */ | |
bd4c625c LT |
2129 | finish_unfinished(s); |
2130 | } else { | |
2131 | if (old_format_only(s) && !silent) { | |
2132 | reiserfs_info(s, "using 3.5.x disk format\n"); | |
2133 | } | |
2134 | ||
4c05141d | 2135 | reiserfs_write_unlock(s); |
edcc37a0 AV |
2136 | if ((errval = reiserfs_lookup_privroot(s)) || |
2137 | (errval = reiserfs_xattr_init(s, s->s_flags))) { | |
bd4c625c LT |
2138 | dput(s->s_root); |
2139 | s->s_root = NULL; | |
4c05141d | 2140 | goto error_unlocked; |
bd4c625c | 2141 | } |
4c05141d | 2142 | reiserfs_write_lock(s); |
bd4c625c | 2143 | } |
098297b2 JM |
2144 | /* |
2145 | * mark hash in super block: it could be unset. overwrite should be ok | |
2146 | */ | |
bd4c625c LT |
2147 | set_sb_hash_function_code(rs, function2code(sbi->s_hash_function)); |
2148 | ||
2149 | handle_attrs(s); | |
2150 | ||
2151 | reiserfs_proc_info_init(s); | |
2152 | ||
2153 | init_waitqueue_head(&(sbi->s_wait)); | |
2154 | spin_lock_init(&sbi->bitmap_lock); | |
2155 | ||
8ebc4232 FW |
2156 | reiserfs_write_unlock(s); |
2157 | ||
bd4c625c LT |
2158 | return (0); |
2159 | ||
00b44197 | 2160 | error: |
f32485be FW |
2161 | reiserfs_write_unlock(s); |
2162 | ||
2163 | error_unlocked: | |
2164 | /* kill the commit thread, free journal ram */ | |
2165 | if (jinit_done) { | |
2166 | reiserfs_write_lock(s); | |
bd4c625c | 2167 | journal_release_error(NULL, s); |
f32485be | 2168 | reiserfs_write_unlock(s); |
bd4c625c | 2169 | } |
5065227b | 2170 | |
033369d1 AB |
2171 | cancel_delayed_work_sync(&REISERFS_SB(s)->old_work); |
2172 | ||
5065227b | 2173 | reiserfs_free_bitmap_cache(s); |
bd4c625c LT |
2174 | if (SB_BUFFER_WITH_SB(s)) |
2175 | brelse(SB_BUFFER_WITH_SB(s)); | |
1da177e4 | 2176 | #ifdef CONFIG_QUOTA |
5065227b JM |
2177 | { |
2178 | int j; | |
00b44197 JK |
2179 | for (j = 0; j < MAXQUOTAS; j++) |
2180 | kfree(qf_names[j]); | |
bd4c625c | 2181 | } |
1da177e4 | 2182 | #endif |
833d304b | 2183 | kfree(sbi); |
1da177e4 | 2184 | |
bd4c625c LT |
2185 | s->s_fs_info = NULL; |
2186 | return errval; | |
1da177e4 LT |
2187 | } |
2188 | ||
726c3342 | 2189 | static int reiserfs_statfs(struct dentry *dentry, struct kstatfs *buf) |
1da177e4 | 2190 | { |
726c3342 | 2191 | struct reiserfs_super_block *rs = SB_DISK_SUPER_BLOCK(dentry->d_sb); |
bd4c625c LT |
2192 | |
2193 | buf->f_namelen = (REISERFS_MAX_NAME(s->s_blocksize)); | |
2194 | buf->f_bfree = sb_free_blocks(rs); | |
2195 | buf->f_bavail = buf->f_bfree; | |
2196 | buf->f_blocks = sb_block_count(rs) - sb_bmap_nr(rs) - 1; | |
726c3342 | 2197 | buf->f_bsize = dentry->d_sb->s_blocksize; |
bd4c625c LT |
2198 | /* changed to accommodate gcc folks. */ |
2199 | buf->f_type = REISERFS_SUPER_MAGIC; | |
651d0623 CL |
2200 | buf->f_fsid.val[0] = (u32)crc32_le(0, rs->s_uuid, sizeof(rs->s_uuid)/2); |
2201 | buf->f_fsid.val[1] = (u32)crc32_le(0, rs->s_uuid + sizeof(rs->s_uuid)/2, | |
2202 | sizeof(rs->s_uuid)/2); | |
2203 | ||
bd4c625c | 2204 | return 0; |
1da177e4 LT |
2205 | } |
2206 | ||
2207 | #ifdef CONFIG_QUOTA | |
1da177e4 LT |
2208 | static int reiserfs_write_dquot(struct dquot *dquot) |
2209 | { | |
bd4c625c LT |
2210 | struct reiserfs_transaction_handle th; |
2211 | int ret, err; | |
d2d0395f | 2212 | int depth; |
bd4c625c LT |
2213 | |
2214 | reiserfs_write_lock(dquot->dq_sb); | |
2215 | ret = | |
2216 | journal_begin(&th, dquot->dq_sb, | |
2217 | REISERFS_QUOTA_TRANS_BLOCKS(dquot->dq_sb)); | |
2218 | if (ret) | |
2219 | goto out; | |
d2d0395f | 2220 | depth = reiserfs_write_unlock_nested(dquot->dq_sb); |
bd4c625c | 2221 | ret = dquot_commit(dquot); |
d2d0395f | 2222 | reiserfs_write_lock_nested(dquot->dq_sb, depth); |
706a5323 | 2223 | err = journal_end(&th, dquot->dq_sb); |
bd4c625c LT |
2224 | if (!ret && err) |
2225 | ret = err; | |
7af11686 | 2226 | out: |
bd4c625c LT |
2227 | reiserfs_write_unlock(dquot->dq_sb); |
2228 | return ret; | |
1da177e4 LT |
2229 | } |
2230 | ||
2231 | static int reiserfs_acquire_dquot(struct dquot *dquot) | |
2232 | { | |
bd4c625c LT |
2233 | struct reiserfs_transaction_handle th; |
2234 | int ret, err; | |
d2d0395f | 2235 | int depth; |
bd4c625c LT |
2236 | |
2237 | reiserfs_write_lock(dquot->dq_sb); | |
2238 | ret = | |
2239 | journal_begin(&th, dquot->dq_sb, | |
2240 | REISERFS_QUOTA_INIT_BLOCKS(dquot->dq_sb)); | |
2241 | if (ret) | |
2242 | goto out; | |
d2d0395f | 2243 | depth = reiserfs_write_unlock_nested(dquot->dq_sb); |
bd4c625c | 2244 | ret = dquot_acquire(dquot); |
d2d0395f | 2245 | reiserfs_write_lock_nested(dquot->dq_sb, depth); |
706a5323 | 2246 | err = journal_end(&th, dquot->dq_sb); |
bd4c625c LT |
2247 | if (!ret && err) |
2248 | ret = err; | |
7af11686 | 2249 | out: |
bd4c625c LT |
2250 | reiserfs_write_unlock(dquot->dq_sb); |
2251 | return ret; | |
1da177e4 LT |
2252 | } |
2253 | ||
2254 | static int reiserfs_release_dquot(struct dquot *dquot) | |
2255 | { | |
bd4c625c LT |
2256 | struct reiserfs_transaction_handle th; |
2257 | int ret, err; | |
2258 | ||
2259 | reiserfs_write_lock(dquot->dq_sb); | |
2260 | ret = | |
2261 | journal_begin(&th, dquot->dq_sb, | |
2262 | REISERFS_QUOTA_DEL_BLOCKS(dquot->dq_sb)); | |
7af11686 | 2263 | reiserfs_write_unlock(dquot->dq_sb); |
9c3013e9 JK |
2264 | if (ret) { |
2265 | /* Release dquot anyway to avoid endless cycle in dqput() */ | |
2266 | dquot_release(dquot); | |
bd4c625c | 2267 | goto out; |
9c3013e9 | 2268 | } |
bd4c625c | 2269 | ret = dquot_release(dquot); |
7af11686 | 2270 | reiserfs_write_lock(dquot->dq_sb); |
706a5323 | 2271 | err = journal_end(&th, dquot->dq_sb); |
bd4c625c LT |
2272 | if (!ret && err) |
2273 | ret = err; | |
bd4c625c | 2274 | reiserfs_write_unlock(dquot->dq_sb); |
7af11686 | 2275 | out: |
bd4c625c | 2276 | return ret; |
1da177e4 LT |
2277 | } |
2278 | ||
2279 | static int reiserfs_mark_dquot_dirty(struct dquot *dquot) | |
2280 | { | |
4506567b | 2281 | /* Are we journaling quotas? */ |
bd4c625c LT |
2282 | if (REISERFS_SB(dquot->dq_sb)->s_qf_names[USRQUOTA] || |
2283 | REISERFS_SB(dquot->dq_sb)->s_qf_names[GRPQUOTA]) { | |
2284 | dquot_mark_dquot_dirty(dquot); | |
2285 | return reiserfs_write_dquot(dquot); | |
2286 | } else | |
2287 | return dquot_mark_dquot_dirty(dquot); | |
1da177e4 LT |
2288 | } |
2289 | ||
2290 | static int reiserfs_write_info(struct super_block *sb, int type) | |
2291 | { | |
bd4c625c LT |
2292 | struct reiserfs_transaction_handle th; |
2293 | int ret, err; | |
d2d0395f | 2294 | int depth; |
bd4c625c LT |
2295 | |
2296 | /* Data block + inode block */ | |
2297 | reiserfs_write_lock(sb); | |
2298 | ret = journal_begin(&th, sb, 2); | |
2299 | if (ret) | |
2300 | goto out; | |
d2d0395f | 2301 | depth = reiserfs_write_unlock_nested(sb); |
bd4c625c | 2302 | ret = dquot_commit_info(sb, type); |
d2d0395f | 2303 | reiserfs_write_lock_nested(sb, depth); |
706a5323 | 2304 | err = journal_end(&th, sb); |
bd4c625c LT |
2305 | if (!ret && err) |
2306 | ret = err; | |
7af11686 | 2307 | out: |
bd4c625c LT |
2308 | reiserfs_write_unlock(sb); |
2309 | return ret; | |
1da177e4 LT |
2310 | } |
2311 | ||
2312 | /* | |
84de856e | 2313 | * Turn on quotas during mount time - we need to find the quota file and such... |
1da177e4 LT |
2314 | */ |
2315 | static int reiserfs_quota_on_mount(struct super_block *sb, int type) | |
2316 | { | |
287a8095 CH |
2317 | return dquot_quota_on_mount(sb, REISERFS_SB(sb)->s_qf_names[type], |
2318 | REISERFS_SB(sb)->s_jquota_fmt, type); | |
1da177e4 LT |
2319 | } |
2320 | ||
2321 | /* | |
2322 | * Standard function to be called on quota_on | |
2323 | */ | |
bd4c625c | 2324 | static int reiserfs_quota_on(struct super_block *sb, int type, int format_id, |
f00c9e44 | 2325 | struct path *path) |
1da177e4 | 2326 | { |
bd4c625c | 2327 | int err; |
d5dee5c3 | 2328 | struct inode *inode; |
5d4f7fdd | 2329 | struct reiserfs_transaction_handle th; |
c3aa0776 | 2330 | int opt = type == USRQUOTA ? REISERFS_USRQUOTA : REISERFS_GRPQUOTA; |
bd4c625c | 2331 | |
b9e06ef2 JK |
2332 | reiserfs_write_lock(sb); |
2333 | if (!(REISERFS_SB(sb)->s_mount_opt & (1 << opt))) { | |
2334 | err = -EINVAL; | |
2335 | goto out; | |
2336 | } | |
307ae18a | 2337 | |
bd4c625c | 2338 | /* Quotafile not on the same filesystem? */ |
d8c9584e | 2339 | if (path->dentry->d_sb != sb) { |
77e69dac AV |
2340 | err = -EXDEV; |
2341 | goto out; | |
bd4c625c | 2342 | } |
f00c9e44 | 2343 | inode = path->dentry->d_inode; |
098297b2 JM |
2344 | /* |
2345 | * We must not pack tails for quota files on reiserfs for quota | |
2346 | * IO to work | |
2347 | */ | |
d5dee5c3 JK |
2348 | if (!(REISERFS_I(inode)->i_flags & i_nopack_mask)) { |
2349 | err = reiserfs_unpack(inode, NULL); | |
2350 | if (err) { | |
45b03d5e JM |
2351 | reiserfs_warning(sb, "super-6520", |
2352 | "Unpacking tail of quota file failed" | |
d5dee5c3 | 2353 | " (%d). Cannot turn on quotas.", err); |
77e69dac AV |
2354 | err = -EINVAL; |
2355 | goto out; | |
d5dee5c3 JK |
2356 | } |
2357 | mark_inode_dirty(inode); | |
bd4c625c | 2358 | } |
5d4f7fdd JK |
2359 | /* Journaling quota? */ |
2360 | if (REISERFS_SB(sb)->s_qf_names[type]) { | |
2361 | /* Quotafile not of fs root? */ | |
f00c9e44 | 2362 | if (path->dentry->d_parent != sb->s_root) |
45b03d5e JM |
2363 | reiserfs_warning(sb, "super-6521", |
2364 | "Quota file not on filesystem root. " | |
bd4c625c | 2365 | "Journalled quota will not work."); |
5d4f7fdd JK |
2366 | } |
2367 | ||
2368 | /* | |
2369 | * When we journal data on quota file, we have to flush journal to see | |
2370 | * all updates to the file when we bypass pagecache... | |
2371 | */ | |
2372 | if (reiserfs_file_data_log(inode)) { | |
2373 | /* Just start temporary transaction and finish it */ | |
2374 | err = journal_begin(&th, sb, 1); | |
2375 | if (err) | |
77e69dac | 2376 | goto out; |
706a5323 | 2377 | err = journal_end_sync(&th, sb); |
5d4f7fdd | 2378 | if (err) |
77e69dac | 2379 | goto out; |
5d4f7fdd | 2380 | } |
b9e06ef2 JK |
2381 | reiserfs_write_unlock(sb); |
2382 | return dquot_quota_on(sb, type, format_id, path); | |
77e69dac | 2383 | out: |
b9e06ef2 | 2384 | reiserfs_write_unlock(sb); |
77e69dac | 2385 | return err; |
1da177e4 LT |
2386 | } |
2387 | ||
098297b2 JM |
2388 | /* |
2389 | * Read data from quotafile - avoid pagecache and such because we cannot afford | |
1da177e4 | 2390 | * acquiring the locks... As quota files are never truncated and quota code |
25985edc | 2391 | * itself serializes the operations (and no one else should touch the files) |
098297b2 JM |
2392 | * we don't have to be afraid of races |
2393 | */ | |
1da177e4 LT |
2394 | static ssize_t reiserfs_quota_read(struct super_block *sb, int type, char *data, |
2395 | size_t len, loff_t off) | |
2396 | { | |
bd4c625c LT |
2397 | struct inode *inode = sb_dqopt(sb)->files[type]; |
2398 | unsigned long blk = off >> sb->s_blocksize_bits; | |
2399 | int err = 0, offset = off & (sb->s_blocksize - 1), tocopy; | |
2400 | size_t toread; | |
2401 | struct buffer_head tmp_bh, *bh; | |
2402 | loff_t i_size = i_size_read(inode); | |
2403 | ||
2404 | if (off > i_size) | |
2405 | return 0; | |
2406 | if (off + len > i_size) | |
2407 | len = i_size - off; | |
2408 | toread = len; | |
2409 | while (toread > 0) { | |
2410 | tocopy = | |
2411 | sb->s_blocksize - offset < | |
2412 | toread ? sb->s_blocksize - offset : toread; | |
2413 | tmp_bh.b_state = 0; | |
098297b2 JM |
2414 | /* |
2415 | * Quota files are without tails so we can safely | |
2416 | * use this function | |
2417 | */ | |
bd4c625c LT |
2418 | reiserfs_write_lock(sb); |
2419 | err = reiserfs_get_block(inode, blk, &tmp_bh, 0); | |
2420 | reiserfs_write_unlock(sb); | |
2421 | if (err) | |
2422 | return err; | |
2423 | if (!buffer_mapped(&tmp_bh)) /* A hole? */ | |
2424 | memset(data, 0, tocopy); | |
2425 | else { | |
2426 | bh = sb_bread(sb, tmp_bh.b_blocknr); | |
2427 | if (!bh) | |
2428 | return -EIO; | |
2429 | memcpy(data, bh->b_data + offset, tocopy); | |
2430 | brelse(bh); | |
2431 | } | |
2432 | offset = 0; | |
2433 | toread -= tocopy; | |
2434 | data += tocopy; | |
2435 | blk++; | |
2436 | } | |
2437 | return len; | |
1da177e4 LT |
2438 | } |
2439 | ||
098297b2 JM |
2440 | /* |
2441 | * Write to quotafile (we know the transaction is already started and has | |
2442 | * enough credits) | |
2443 | */ | |
1da177e4 LT |
2444 | static ssize_t reiserfs_quota_write(struct super_block *sb, int type, |
2445 | const char *data, size_t len, loff_t off) | |
2446 | { | |
bd4c625c LT |
2447 | struct inode *inode = sb_dqopt(sb)->files[type]; |
2448 | unsigned long blk = off >> sb->s_blocksize_bits; | |
2449 | int err = 0, offset = off & (sb->s_blocksize - 1), tocopy; | |
2450 | int journal_quota = REISERFS_SB(sb)->s_qf_names[type] != NULL; | |
2451 | size_t towrite = len; | |
2452 | struct buffer_head tmp_bh, *bh; | |
2453 | ||
9c3013e9 JK |
2454 | if (!current->journal_info) { |
2455 | printk(KERN_WARNING "reiserfs: Quota write (off=%Lu, len=%Lu)" | |
2456 | " cancelled because transaction is not started.\n", | |
2457 | (unsigned long long)off, (unsigned long long)len); | |
2458 | return -EIO; | |
2459 | } | |
bd4c625c LT |
2460 | while (towrite > 0) { |
2461 | tocopy = sb->s_blocksize - offset < towrite ? | |
2462 | sb->s_blocksize - offset : towrite; | |
2463 | tmp_bh.b_state = 0; | |
361d94a3 | 2464 | reiserfs_write_lock(sb); |
bd4c625c | 2465 | err = reiserfs_get_block(inode, blk, &tmp_bh, GET_BLOCK_CREATE); |
361d94a3 | 2466 | reiserfs_write_unlock(sb); |
bd4c625c LT |
2467 | if (err) |
2468 | goto out; | |
2469 | if (offset || tocopy != sb->s_blocksize) | |
2470 | bh = sb_bread(sb, tmp_bh.b_blocknr); | |
2471 | else | |
2472 | bh = sb_getblk(sb, tmp_bh.b_blocknr); | |
2473 | if (!bh) { | |
2474 | err = -EIO; | |
2475 | goto out; | |
2476 | } | |
2477 | lock_buffer(bh); | |
2478 | memcpy(bh->b_data + offset, data, tocopy); | |
2479 | flush_dcache_page(bh->b_page); | |
2480 | set_buffer_uptodate(bh); | |
2481 | unlock_buffer(bh); | |
361d94a3 | 2482 | reiserfs_write_lock(sb); |
bd4c625c LT |
2483 | reiserfs_prepare_for_journal(sb, bh, 1); |
2484 | journal_mark_dirty(current->journal_info, sb, bh); | |
2485 | if (!journal_quota) | |
2486 | reiserfs_add_ordered_list(inode, bh); | |
361d94a3 | 2487 | reiserfs_write_unlock(sb); |
bd4c625c LT |
2488 | brelse(bh); |
2489 | offset = 0; | |
2490 | towrite -= tocopy; | |
2491 | data += tocopy; | |
2492 | blk++; | |
2493 | } | |
9c3013e9 | 2494 | out: |
67f1648d | 2495 | if (len == towrite) |
bd4c625c LT |
2496 | return err; |
2497 | if (inode->i_size < off + len - towrite) | |
2498 | i_size_write(inode, off + len - towrite); | |
2499 | inode->i_version++; | |
2500 | inode->i_mtime = inode->i_ctime = CURRENT_TIME; | |
2501 | mark_inode_dirty(inode); | |
bd4c625c | 2502 | return len - towrite; |
1da177e4 LT |
2503 | } |
2504 | ||
2505 | #endif | |
2506 | ||
152a0836 | 2507 | static struct dentry *get_super_block(struct file_system_type *fs_type, |
454e2398 | 2508 | int flags, const char *dev_name, |
152a0836 | 2509 | void *data) |
1da177e4 | 2510 | { |
152a0836 | 2511 | return mount_bdev(fs_type, flags, dev_name, data, reiserfs_fill_super); |
1da177e4 LT |
2512 | } |
2513 | ||
bd4c625c | 2514 | static int __init init_reiserfs_fs(void) |
1da177e4 LT |
2515 | { |
2516 | int ret; | |
2517 | ||
797d9016 JM |
2518 | ret = init_inodecache(); |
2519 | if (ret) | |
1da177e4 | 2520 | return ret; |
1da177e4 | 2521 | |
bd4c625c | 2522 | reiserfs_proc_info_global_init(); |
1da177e4 | 2523 | |
bd4c625c | 2524 | ret = register_filesystem(&reiserfs_fs_type); |
797d9016 JM |
2525 | if (ret) |
2526 | goto out; | |
1da177e4 | 2527 | |
797d9016 JM |
2528 | return 0; |
2529 | out: | |
bd4c625c LT |
2530 | reiserfs_proc_info_global_done(); |
2531 | destroy_inodecache(); | |
1da177e4 LT |
2532 | |
2533 | return ret; | |
2534 | } | |
2535 | ||
bd4c625c | 2536 | static void __exit exit_reiserfs_fs(void) |
1da177e4 | 2537 | { |
bd4c625c LT |
2538 | reiserfs_proc_info_global_done(); |
2539 | unregister_filesystem(&reiserfs_fs_type); | |
2540 | destroy_inodecache(); | |
1da177e4 LT |
2541 | } |
2542 | ||
2543 | struct file_system_type reiserfs_fs_type = { | |
bd4c625c LT |
2544 | .owner = THIS_MODULE, |
2545 | .name = "reiserfs", | |
152a0836 | 2546 | .mount = get_super_block, |
edc666e2 | 2547 | .kill_sb = reiserfs_kill_sb, |
bd4c625c | 2548 | .fs_flags = FS_REQUIRES_DEV, |
1da177e4 | 2549 | }; |
7f78e035 | 2550 | MODULE_ALIAS_FS("reiserfs"); |
1da177e4 | 2551 | |
bd4c625c LT |
2552 | MODULE_DESCRIPTION("ReiserFS journaled filesystem"); |
2553 | MODULE_AUTHOR("Hans Reiser <reiser@namesys.com>"); | |
2554 | MODULE_LICENSE("GPL"); | |
1da177e4 | 2555 | |
bd4c625c LT |
2556 | module_init(init_reiserfs_fs); |
2557 | module_exit(exit_reiserfs_fs); |