Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /* |
2 | * Copyright 2000 by Hans Reiser, licensing governed by reiserfs/README | |
3 | * | |
4 | * Trivial changes by Alan Cox to add the LFS fixes | |
5 | * | |
6 | * Trivial Changes: | |
7 | * Rights granted to Hans Reiser to redistribute under other terms providing | |
8 | * he accepts all liability including but not limited to patent, fitness | |
9 | * for purpose, and direct or indirect claims arising from failure to perform. | |
10 | * | |
11 | * NO WARRANTY | |
12 | */ | |
13 | ||
1da177e4 | 14 | #include <linux/module.h> |
5a0e3ad6 | 15 | #include <linux/slab.h> |
1da177e4 LT |
16 | #include <linux/vmalloc.h> |
17 | #include <linux/time.h> | |
18 | #include <asm/uaccess.h> | |
19 | #include <linux/reiserfs_fs.h> | |
20 | #include <linux/reiserfs_acl.h> | |
21 | #include <linux/reiserfs_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); |
c3aa0776 | 65 | void show_alloc_options(struct seq_file *seq, struct super_block *s); |
1da177e4 | 66 | |
bd4c625c | 67 | static int reiserfs_sync_fs(struct super_block *s, int wait) |
1da177e4 | 68 | { |
5af7926f CH |
69 | struct reiserfs_transaction_handle th; |
70 | ||
71 | reiserfs_write_lock(s); | |
72 | if (!journal_begin(&th, s, 1)) | |
73 | if (!journal_end_sync(&th, s, 1)) | |
74 | reiserfs_flush_old_commits(s); | |
75 | s->s_dirt = 0; /* Even if it's not true. | |
76 | * We'll loop forever in sync_supers otherwise */ | |
77 | reiserfs_write_unlock(s); | |
bd4c625c | 78 | return 0; |
1da177e4 LT |
79 | } |
80 | ||
81 | static void reiserfs_write_super(struct super_block *s) | |
82 | { | |
bd4c625c | 83 | reiserfs_sync_fs(s, 1); |
1da177e4 LT |
84 | } |
85 | ||
c4be0c1d | 86 | static int reiserfs_freeze(struct super_block *s) |
1da177e4 | 87 | { |
bd4c625c LT |
88 | struct reiserfs_transaction_handle th; |
89 | reiserfs_write_lock(s); | |
90 | if (!(s->s_flags & MS_RDONLY)) { | |
91 | int err = journal_begin(&th, s, 1); | |
92 | if (err) { | |
93 | reiserfs_block_writes(&th); | |
94 | } else { | |
95 | reiserfs_prepare_for_journal(s, SB_BUFFER_WITH_SB(s), | |
96 | 1); | |
97 | journal_mark_dirty(&th, s, SB_BUFFER_WITH_SB(s)); | |
98 | reiserfs_block_writes(&th); | |
99 | journal_end_sync(&th, s, 1); | |
100 | } | |
101 | } | |
102 | s->s_dirt = 0; | |
103 | reiserfs_write_unlock(s); | |
c4be0c1d | 104 | return 0; |
1da177e4 LT |
105 | } |
106 | ||
c4be0c1d | 107 | static int reiserfs_unfreeze(struct super_block *s) |
bd4c625c LT |
108 | { |
109 | reiserfs_allow_writes(s); | |
c4be0c1d | 110 | return 0; |
1da177e4 LT |
111 | } |
112 | ||
bd4c625c | 113 | extern const struct in_core_key MAX_IN_CORE_KEY; |
1da177e4 LT |
114 | |
115 | /* this is used to delete "save link" when there are no items of a | |
116 | file it points to. It can either happen if unlink is completed but | |
117 | "save unlink" removal, or if file has both unlink and truncate | |
118 | pending and as unlink completes first (because key of "save link" | |
119 | protecting unlink is bigger that a key lf "save link" which | |
120 | protects truncate), so there left no items to make truncate | |
121 | completion on */ | |
bd4c625c LT |
122 | static int remove_save_link_only(struct super_block *s, |
123 | struct reiserfs_key *key, int oid_free) | |
1da177e4 | 124 | { |
bd4c625c LT |
125 | struct reiserfs_transaction_handle th; |
126 | int err; | |
127 | ||
128 | /* we are going to do one balancing */ | |
129 | err = journal_begin(&th, s, JOURNAL_PER_BALANCE_CNT); | |
130 | if (err) | |
131 | return err; | |
132 | ||
133 | reiserfs_delete_solid_item(&th, NULL, key); | |
134 | if (oid_free) | |
135 | /* removals are protected by direct items */ | |
136 | reiserfs_release_objectid(&th, le32_to_cpu(key->k_objectid)); | |
137 | ||
138 | return journal_end(&th, s, JOURNAL_PER_BALANCE_CNT); | |
1da177e4 | 139 | } |
bd4c625c | 140 | |
1da177e4 LT |
141 | #ifdef CONFIG_QUOTA |
142 | static int reiserfs_quota_on_mount(struct super_block *, int); | |
143 | #endif | |
bd4c625c | 144 | |
1da177e4 | 145 | /* look for uncompleted unlinks and truncates and complete them */ |
bd4c625c | 146 | static int finish_unfinished(struct super_block *s) |
1da177e4 | 147 | { |
bd4c625c LT |
148 | INITIALIZE_PATH(path); |
149 | struct cpu_key max_cpu_key, obj_key; | |
fb46f341 | 150 | struct reiserfs_key save_link_key, last_inode_key; |
bd4c625c LT |
151 | int retval = 0; |
152 | struct item_head *ih; | |
153 | struct buffer_head *bh; | |
154 | int item_pos; | |
155 | char *item; | |
156 | int done; | |
157 | struct inode *inode; | |
158 | int truncate; | |
1da177e4 | 159 | #ifdef CONFIG_QUOTA |
bd4c625c LT |
160 | int i; |
161 | int ms_active_set; | |
f4b113ae | 162 | int quota_enabled[MAXQUOTAS]; |
1da177e4 | 163 | #endif |
bd4c625c LT |
164 | |
165 | /* compose key to look for "save" links */ | |
166 | max_cpu_key.version = KEY_FORMAT_3_5; | |
167 | max_cpu_key.on_disk_key.k_dir_id = ~0U; | |
168 | max_cpu_key.on_disk_key.k_objectid = ~0U; | |
169 | set_cpu_key_k_offset(&max_cpu_key, ~0U); | |
170 | max_cpu_key.key_length = 3; | |
1da177e4 | 171 | |
fb46f341 LW |
172 | memset(&last_inode_key, 0, sizeof(last_inode_key)); |
173 | ||
1da177e4 | 174 | #ifdef CONFIG_QUOTA |
bd4c625c LT |
175 | /* Needed for iput() to work correctly and not trash data */ |
176 | if (s->s_flags & MS_ACTIVE) { | |
177 | ms_active_set = 0; | |
178 | } else { | |
179 | ms_active_set = 1; | |
180 | s->s_flags |= MS_ACTIVE; | |
181 | } | |
182 | /* Turn on quotas so that they are updated correctly */ | |
183 | for (i = 0; i < MAXQUOTAS; i++) { | |
f4b113ae | 184 | quota_enabled[i] = 1; |
bd4c625c | 185 | if (REISERFS_SB(s)->s_qf_names[i]) { |
f4b113ae JK |
186 | int ret; |
187 | ||
188 | if (sb_has_quota_active(s, i)) { | |
189 | quota_enabled[i] = 0; | |
190 | continue; | |
191 | } | |
192 | ret = reiserfs_quota_on_mount(s, i); | |
bd4c625c | 193 | if (ret < 0) |
45b03d5e JM |
194 | reiserfs_warning(s, "reiserfs-2500", |
195 | "cannot turn on journaled " | |
196 | "quota: error %d", ret); | |
bd4c625c LT |
197 | } |
198 | } | |
1da177e4 | 199 | #endif |
bd4c625c LT |
200 | |
201 | done = 0; | |
202 | REISERFS_SB(s)->s_is_unlinked_ok = 1; | |
203 | while (!retval) { | |
204 | retval = search_item(s, &max_cpu_key, &path); | |
205 | if (retval != ITEM_NOT_FOUND) { | |
0030b645 JM |
206 | reiserfs_error(s, "vs-2140", |
207 | "search_by_key returned %d", retval); | |
bd4c625c LT |
208 | break; |
209 | } | |
210 | ||
211 | bh = get_last_bh(&path); | |
212 | item_pos = get_item_pos(&path); | |
213 | if (item_pos != B_NR_ITEMS(bh)) { | |
45b03d5e JM |
214 | reiserfs_warning(s, "vs-2060", |
215 | "wrong position found"); | |
bd4c625c LT |
216 | break; |
217 | } | |
218 | item_pos--; | |
219 | ih = B_N_PITEM_HEAD(bh, item_pos); | |
220 | ||
221 | if (le32_to_cpu(ih->ih_key.k_dir_id) != MAX_KEY_OBJECTID) | |
222 | /* there are no "save" links anymore */ | |
223 | break; | |
224 | ||
225 | save_link_key = ih->ih_key; | |
226 | if (is_indirect_le_ih(ih)) | |
227 | truncate = 1; | |
228 | else | |
229 | truncate = 0; | |
230 | ||
231 | /* reiserfs_iget needs k_dirid and k_objectid only */ | |
232 | item = B_I_PITEM(bh, ih); | |
233 | obj_key.on_disk_key.k_dir_id = le32_to_cpu(*(__le32 *) item); | |
234 | obj_key.on_disk_key.k_objectid = | |
235 | le32_to_cpu(ih->ih_key.k_objectid); | |
236 | obj_key.on_disk_key.k_offset = 0; | |
237 | obj_key.on_disk_key.k_type = 0; | |
238 | ||
239 | pathrelse(&path); | |
240 | ||
241 | inode = reiserfs_iget(s, &obj_key); | |
242 | if (!inode) { | |
243 | /* the unlink almost completed, it just did not manage to remove | |
244 | "save" link and release objectid */ | |
45b03d5e | 245 | reiserfs_warning(s, "vs-2180", "iget failed for %K", |
bd4c625c LT |
246 | &obj_key); |
247 | retval = remove_save_link_only(s, &save_link_key, 1); | |
248 | continue; | |
249 | } | |
250 | ||
251 | if (!truncate && inode->i_nlink) { | |
252 | /* file is not unlinked */ | |
45b03d5e JM |
253 | reiserfs_warning(s, "vs-2185", |
254 | "file %K is not unlinked", | |
bd4c625c LT |
255 | &obj_key); |
256 | retval = remove_save_link_only(s, &save_link_key, 0); | |
257 | continue; | |
258 | } | |
871a2931 | 259 | dquot_initialize(inode); |
bd4c625c LT |
260 | |
261 | if (truncate && S_ISDIR(inode->i_mode)) { | |
262 | /* We got a truncate request for a dir which is impossible. | |
263 | The only imaginable way is to execute unfinished truncate request | |
264 | then boot into old kernel, remove the file and create dir with | |
265 | the same key. */ | |
45b03d5e JM |
266 | reiserfs_warning(s, "green-2101", |
267 | "impossible truncate on a " | |
268 | "directory %k. Please report", | |
bd4c625c LT |
269 | INODE_PKEY(inode)); |
270 | retval = remove_save_link_only(s, &save_link_key, 0); | |
271 | truncate = 0; | |
272 | iput(inode); | |
273 | continue; | |
274 | } | |
275 | ||
276 | if (truncate) { | |
277 | REISERFS_I(inode)->i_flags |= | |
278 | i_link_saved_truncate_mask; | |
279 | /* not completed truncate found. New size was committed together | |
280 | with "save" link */ | |
281 | reiserfs_info(s, "Truncating %k to %Ld ..", | |
282 | INODE_PKEY(inode), inode->i_size); | |
283 | reiserfs_truncate_file(inode, | |
284 | 0 | |
285 | /*don't update modification time */ | |
286 | ); | |
287 | retval = remove_save_link(inode, truncate); | |
288 | } else { | |
289 | REISERFS_I(inode)->i_flags |= i_link_saved_unlink_mask; | |
290 | /* not completed unlink (rmdir) found */ | |
291 | reiserfs_info(s, "Removing %k..", INODE_PKEY(inode)); | |
fb46f341 LW |
292 | if (memcmp(&last_inode_key, INODE_PKEY(inode), |
293 | sizeof(last_inode_key))){ | |
294 | last_inode_key = *INODE_PKEY(inode); | |
295 | /* removal gets completed in iput */ | |
296 | retval = 0; | |
297 | } else { | |
45b03d5e JM |
298 | reiserfs_warning(s, "super-2189", "Dead loop " |
299 | "in finish_unfinished " | |
300 | "detected, just remove " | |
301 | "save link\n"); | |
fb46f341 LW |
302 | retval = remove_save_link_only(s, |
303 | &save_link_key, 0); | |
304 | } | |
bd4c625c LT |
305 | } |
306 | ||
307 | iput(inode); | |
308 | printk("done\n"); | |
309 | done++; | |
310 | } | |
311 | REISERFS_SB(s)->s_is_unlinked_ok = 0; | |
312 | ||
1da177e4 | 313 | #ifdef CONFIG_QUOTA |
bd4c625c LT |
314 | /* Turn quotas off */ |
315 | for (i = 0; i < MAXQUOTAS; i++) { | |
f4b113ae | 316 | if (sb_dqopt(s)->files[i] && quota_enabled[i]) |
287a8095 | 317 | dquot_quota_off(s, i); |
bd4c625c LT |
318 | } |
319 | if (ms_active_set) | |
320 | /* Restore the flag back */ | |
321 | s->s_flags &= ~MS_ACTIVE; | |
1da177e4 | 322 | #endif |
bd4c625c LT |
323 | pathrelse(&path); |
324 | if (done) | |
325 | reiserfs_info(s, "There were %d uncompleted unlinks/truncates. " | |
326 | "Completed\n", done); | |
327 | return retval; | |
1da177e4 | 328 | } |
bd4c625c | 329 | |
1da177e4 LT |
330 | /* to protect file being unlinked from getting lost we "safe" link files |
331 | being unlinked. This link will be deleted in the same transaction with last | |
3a4fa0a2 | 332 | item of file. mounting the filesystem we scan all these links and remove |
1da177e4 | 333 | files which almost got lost */ |
bd4c625c LT |
334 | void add_save_link(struct reiserfs_transaction_handle *th, |
335 | struct inode *inode, int truncate) | |
1da177e4 | 336 | { |
bd4c625c LT |
337 | INITIALIZE_PATH(path); |
338 | int retval; | |
339 | struct cpu_key key; | |
340 | struct item_head ih; | |
341 | __le32 link; | |
342 | ||
343 | BUG_ON(!th->t_trans_id); | |
344 | ||
345 | /* file can only get one "save link" of each kind */ | |
346 | RFALSE(truncate && | |
347 | (REISERFS_I(inode)->i_flags & i_link_saved_truncate_mask), | |
348 | "saved link already exists for truncated inode %lx", | |
349 | (long)inode->i_ino); | |
350 | RFALSE(!truncate && | |
351 | (REISERFS_I(inode)->i_flags & i_link_saved_unlink_mask), | |
352 | "saved link already exists for unlinked inode %lx", | |
353 | (long)inode->i_ino); | |
354 | ||
355 | /* setup key of "save" link */ | |
356 | key.version = KEY_FORMAT_3_5; | |
357 | key.on_disk_key.k_dir_id = MAX_KEY_OBJECTID; | |
358 | key.on_disk_key.k_objectid = inode->i_ino; | |
359 | if (!truncate) { | |
360 | /* unlink, rmdir, rename */ | |
361 | set_cpu_key_k_offset(&key, 1 + inode->i_sb->s_blocksize); | |
362 | set_cpu_key_k_type(&key, TYPE_DIRECT); | |
363 | ||
364 | /* item head of "safe" link */ | |
365 | make_le_item_head(&ih, &key, key.version, | |
366 | 1 + inode->i_sb->s_blocksize, TYPE_DIRECT, | |
367 | 4 /*length */ , 0xffff /*free space */ ); | |
368 | } else { | |
369 | /* truncate */ | |
370 | if (S_ISDIR(inode->i_mode)) | |
45b03d5e JM |
371 | reiserfs_warning(inode->i_sb, "green-2102", |
372 | "Adding a truncate savelink for " | |
373 | "a directory %k! Please report", | |
bd4c625c LT |
374 | INODE_PKEY(inode)); |
375 | set_cpu_key_k_offset(&key, 1); | |
376 | set_cpu_key_k_type(&key, TYPE_INDIRECT); | |
377 | ||
378 | /* item head of "safe" link */ | |
379 | make_le_item_head(&ih, &key, key.version, 1, TYPE_INDIRECT, | |
380 | 4 /*length */ , 0 /*free space */ ); | |
381 | } | |
382 | key.key_length = 3; | |
383 | ||
384 | /* look for its place in the tree */ | |
385 | retval = search_item(inode->i_sb, &key, &path); | |
386 | if (retval != ITEM_NOT_FOUND) { | |
387 | if (retval != -ENOSPC) | |
0030b645 JM |
388 | reiserfs_error(inode->i_sb, "vs-2100", |
389 | "search_by_key (%K) returned %d", &key, | |
390 | retval); | |
bd4c625c LT |
391 | pathrelse(&path); |
392 | return; | |
393 | } | |
1da177e4 | 394 | |
bd4c625c LT |
395 | /* body of "save" link */ |
396 | link = INODE_PKEY(inode)->k_dir_id; | |
397 | ||
25985edc | 398 | /* put "save" link into tree, don't charge quota to anyone */ |
bd4c625c LT |
399 | retval = |
400 | reiserfs_insert_item(th, &path, &key, &ih, NULL, (char *)&link); | |
401 | if (retval) { | |
402 | if (retval != -ENOSPC) | |
0030b645 JM |
403 | reiserfs_error(inode->i_sb, "vs-2120", |
404 | "insert_item returned %d", retval); | |
bd4c625c LT |
405 | } else { |
406 | if (truncate) | |
407 | REISERFS_I(inode)->i_flags |= | |
408 | i_link_saved_truncate_mask; | |
409 | else | |
410 | REISERFS_I(inode)->i_flags |= i_link_saved_unlink_mask; | |
411 | } | |
412 | } | |
1da177e4 LT |
413 | |
414 | /* this opens transaction unlike add_save_link */ | |
bd4c625c | 415 | int remove_save_link(struct inode *inode, int truncate) |
1da177e4 | 416 | { |
bd4c625c LT |
417 | struct reiserfs_transaction_handle th; |
418 | struct reiserfs_key key; | |
419 | int err; | |
420 | ||
421 | /* we are going to do one balancing only */ | |
422 | err = journal_begin(&th, inode->i_sb, JOURNAL_PER_BALANCE_CNT); | |
423 | if (err) | |
424 | return err; | |
425 | ||
426 | /* setup key of "save" link */ | |
427 | key.k_dir_id = cpu_to_le32(MAX_KEY_OBJECTID); | |
428 | key.k_objectid = INODE_PKEY(inode)->k_objectid; | |
429 | if (!truncate) { | |
430 | /* unlink, rmdir, rename */ | |
431 | set_le_key_k_offset(KEY_FORMAT_3_5, &key, | |
432 | 1 + inode->i_sb->s_blocksize); | |
433 | set_le_key_k_type(KEY_FORMAT_3_5, &key, TYPE_DIRECT); | |
434 | } else { | |
435 | /* truncate */ | |
436 | set_le_key_k_offset(KEY_FORMAT_3_5, &key, 1); | |
437 | set_le_key_k_type(KEY_FORMAT_3_5, &key, TYPE_INDIRECT); | |
438 | } | |
1da177e4 | 439 | |
bd4c625c LT |
440 | if ((truncate && |
441 | (REISERFS_I(inode)->i_flags & i_link_saved_truncate_mask)) || | |
442 | (!truncate && | |
443 | (REISERFS_I(inode)->i_flags & i_link_saved_unlink_mask))) | |
444 | /* don't take quota bytes from anywhere */ | |
445 | reiserfs_delete_solid_item(&th, NULL, &key); | |
446 | if (!truncate) { | |
447 | reiserfs_release_objectid(&th, inode->i_ino); | |
448 | REISERFS_I(inode)->i_flags &= ~i_link_saved_unlink_mask; | |
449 | } else | |
450 | REISERFS_I(inode)->i_flags &= ~i_link_saved_truncate_mask; | |
451 | ||
452 | return journal_end(&th, inode->i_sb, JOURNAL_PER_BALANCE_CNT); | |
453 | } | |
1da177e4 | 454 | |
edc666e2 | 455 | static void reiserfs_kill_sb(struct super_block *s) |
1da177e4 | 456 | { |
edc666e2 | 457 | if (REISERFS_SB(s)) { |
a9e36da6 JM |
458 | /* |
459 | * Force any pending inode evictions to occur now. Any | |
460 | * inodes to be removed that have extended attributes | |
461 | * associated with them need to clean them up before | |
462 | * we can release the extended attribute root dentries. | |
463 | * shrink_dcache_for_umount will BUG if we don't release | |
464 | * those before it's called so ->put_super is too late. | |
465 | */ | |
466 | shrink_dcache_sb(s); | |
467 | ||
468 | dput(REISERFS_SB(s)->xattr_root); | |
469 | REISERFS_SB(s)->xattr_root = NULL; | |
470 | dput(REISERFS_SB(s)->priv_root); | |
471 | REISERFS_SB(s)->priv_root = NULL; | |
bd4c625c LT |
472 | } |
473 | ||
edc666e2 DH |
474 | kill_block_super(s); |
475 | } | |
476 | ||
477 | static void reiserfs_put_super(struct super_block *s) | |
478 | { | |
479 | struct reiserfs_transaction_handle th; | |
480 | th.t_trans_id = 0; | |
bd4c625c | 481 | |
e0ccfd95 CH |
482 | dquot_disable(s, -1, DQUOT_USAGE_ENABLED | DQUOT_LIMITS_ENABLED); |
483 | ||
8ebc4232 | 484 | reiserfs_write_lock(s); |
6cfd0148 | 485 | |
8c85e125 CH |
486 | if (s->s_dirt) |
487 | reiserfs_write_super(s); | |
488 | ||
bd4c625c LT |
489 | /* change file system state to current state if it was mounted with read-write permissions */ |
490 | if (!(s->s_flags & MS_RDONLY)) { | |
491 | if (!journal_begin(&th, s, 10)) { | |
492 | reiserfs_prepare_for_journal(s, SB_BUFFER_WITH_SB(s), | |
493 | 1); | |
494 | set_sb_umount_state(SB_DISK_SUPER_BLOCK(s), | |
495 | REISERFS_SB(s)->s_mount_state); | |
496 | journal_mark_dirty(&th, s, SB_BUFFER_WITH_SB(s)); | |
497 | } | |
498 | } | |
499 | ||
500 | /* note, journal_release checks for readonly mount, and can decide not | |
501 | ** to do a journal_end | |
502 | */ | |
503 | journal_release(&th, s); | |
504 | ||
5065227b | 505 | reiserfs_free_bitmap_cache(s); |
bd4c625c LT |
506 | |
507 | brelse(SB_BUFFER_WITH_SB(s)); | |
508 | ||
509 | print_statistics(s); | |
510 | ||
bd4c625c | 511 | if (REISERFS_SB(s)->reserved_blocks != 0) { |
45b03d5e | 512 | reiserfs_warning(s, "green-2005", "reserved blocks left %d", |
bd4c625c LT |
513 | REISERFS_SB(s)->reserved_blocks); |
514 | } | |
515 | ||
516 | reiserfs_proc_info_done(s); | |
517 | ||
8ebc4232 FW |
518 | reiserfs_write_unlock(s); |
519 | mutex_destroy(&REISERFS_SB(s)->lock); | |
bd4c625c LT |
520 | kfree(s->s_fs_info); |
521 | s->s_fs_info = NULL; | |
1da177e4 LT |
522 | } |
523 | ||
e18b890b | 524 | static struct kmem_cache *reiserfs_inode_cachep; |
1da177e4 LT |
525 | |
526 | static struct inode *reiserfs_alloc_inode(struct super_block *sb) | |
527 | { | |
528 | struct reiserfs_inode_info *ei; | |
bd4c625c | 529 | ei = (struct reiserfs_inode_info *) |
e94b1766 | 530 | kmem_cache_alloc(reiserfs_inode_cachep, GFP_KERNEL); |
1da177e4 LT |
531 | if (!ei) |
532 | return NULL; | |
0e4f6a79 AV |
533 | atomic_set(&ei->openers, 0); |
534 | mutex_init(&ei->tailpack); | |
1da177e4 LT |
535 | return &ei->vfs_inode; |
536 | } | |
537 | ||
fa0d7e3d | 538 | static void reiserfs_i_callback(struct rcu_head *head) |
1da177e4 | 539 | { |
fa0d7e3d | 540 | struct inode *inode = container_of(head, struct inode, i_rcu); |
1da177e4 LT |
541 | kmem_cache_free(reiserfs_inode_cachep, REISERFS_I(inode)); |
542 | } | |
543 | ||
fa0d7e3d NP |
544 | static void reiserfs_destroy_inode(struct inode *inode) |
545 | { | |
546 | call_rcu(&inode->i_rcu, reiserfs_i_callback); | |
547 | } | |
548 | ||
51cc5068 | 549 | static void init_once(void *foo) |
1da177e4 | 550 | { |
bd4c625c | 551 | struct reiserfs_inode_info *ei = (struct reiserfs_inode_info *)foo; |
1da177e4 | 552 | |
a35afb83 CL |
553 | INIT_LIST_HEAD(&ei->i_prealloc_list); |
554 | inode_init_once(&ei->vfs_inode); | |
1da177e4 | 555 | } |
bd4c625c | 556 | |
1da177e4 LT |
557 | static int init_inodecache(void) |
558 | { | |
559 | reiserfs_inode_cachep = kmem_cache_create("reiser_inode_cache", | |
bd4c625c LT |
560 | sizeof(struct |
561 | reiserfs_inode_info), | |
fffb60f9 PJ |
562 | 0, (SLAB_RECLAIM_ACCOUNT| |
563 | SLAB_MEM_SPREAD), | |
20c2df83 | 564 | init_once); |
1da177e4 LT |
565 | if (reiserfs_inode_cachep == NULL) |
566 | return -ENOMEM; | |
567 | return 0; | |
568 | } | |
569 | ||
570 | static void destroy_inodecache(void) | |
571 | { | |
1a1d92c1 | 572 | kmem_cache_destroy(reiserfs_inode_cachep); |
1da177e4 LT |
573 | } |
574 | ||
575 | /* we don't mark inodes dirty, we just log them */ | |
aa385729 | 576 | static void reiserfs_dirty_inode(struct inode *inode, int flags) |
bd4c625c LT |
577 | { |
578 | struct reiserfs_transaction_handle th; | |
579 | ||
580 | int err = 0; | |
dc8f6d89 FW |
581 | int lock_depth; |
582 | ||
bd4c625c | 583 | if (inode->i_sb->s_flags & MS_RDONLY) { |
45b03d5e JM |
584 | reiserfs_warning(inode->i_sb, "clm-6006", |
585 | "writing inode %lu on readonly FS", | |
bd4c625c LT |
586 | inode->i_ino); |
587 | return; | |
588 | } | |
dc8f6d89 | 589 | lock_depth = reiserfs_write_lock_once(inode->i_sb); |
bd4c625c LT |
590 | |
591 | /* this is really only used for atime updates, so they don't have | |
592 | ** to be included in O_SYNC or fsync | |
593 | */ | |
594 | err = journal_begin(&th, inode->i_sb, 1); | |
dc8f6d89 FW |
595 | if (err) |
596 | goto out; | |
597 | ||
bd4c625c LT |
598 | reiserfs_update_sd(&th, inode); |
599 | journal_end(&th, inode->i_sb, 1); | |
dc8f6d89 FW |
600 | |
601 | out: | |
602 | reiserfs_write_unlock_once(inode->i_sb, lock_depth); | |
1da177e4 LT |
603 | } |
604 | ||
c3aa0776 JK |
605 | static int reiserfs_show_options(struct seq_file *seq, struct dentry *root) |
606 | { | |
607 | struct super_block *s = root->d_sb; | |
608 | struct reiserfs_journal *journal = SB_JOURNAL(s); | |
609 | long opts = REISERFS_SB(s)->s_mount_opt; | |
610 | ||
611 | if (opts & (1 << REISERFS_LARGETAIL)) | |
612 | seq_puts(seq, ",tails=on"); | |
613 | else if (!(opts & (1 << REISERFS_SMALLTAIL))) | |
614 | seq_puts(seq, ",notail"); | |
615 | /* tails=small is default so we don't show it */ | |
616 | ||
617 | if (!(opts & (1 << REISERFS_BARRIER_FLUSH))) | |
618 | seq_puts(seq, ",barrier=none"); | |
619 | /* barrier=flush is default so we don't show it */ | |
620 | ||
621 | if (opts & (1 << REISERFS_ERROR_CONTINUE)) | |
622 | seq_puts(seq, ",errors=continue"); | |
623 | else if (opts & (1 << REISERFS_ERROR_PANIC)) | |
624 | seq_puts(seq, ",errors=panic"); | |
625 | /* errors=ro is default so we don't show it */ | |
626 | ||
627 | if (opts & (1 << REISERFS_DATA_LOG)) | |
628 | seq_puts(seq, ",data=journal"); | |
629 | else if (opts & (1 << REISERFS_DATA_WRITEBACK)) | |
630 | seq_puts(seq, ",data=writeback"); | |
631 | /* data=ordered is default so we don't show it */ | |
632 | ||
633 | if (opts & (1 << REISERFS_ATTRS)) | |
634 | seq_puts(seq, ",attrs"); | |
635 | ||
636 | if (opts & (1 << REISERFS_XATTRS_USER)) | |
637 | seq_puts(seq, ",user_xattr"); | |
638 | ||
639 | if (opts & (1 << REISERFS_EXPOSE_PRIVROOT)) | |
640 | seq_puts(seq, ",expose_privroot"); | |
641 | ||
642 | if (opts & (1 << REISERFS_POSIXACL)) | |
643 | seq_puts(seq, ",acl"); | |
644 | ||
645 | if (REISERFS_SB(s)->s_jdev) | |
646 | seq_printf(seq, ",jdev=%s", REISERFS_SB(s)->s_jdev); | |
647 | ||
648 | if (journal->j_max_commit_age != journal->j_default_max_commit_age) | |
649 | seq_printf(seq, ",commit=%d", journal->j_max_commit_age); | |
650 | ||
651 | #ifdef CONFIG_QUOTA | |
652 | if (REISERFS_SB(s)->s_qf_names[USRQUOTA]) | |
653 | seq_printf(seq, ",usrjquota=%s", REISERFS_SB(s)->s_qf_names[USRQUOTA]); | |
654 | else if (opts & (1 << REISERFS_USRQUOTA)) | |
655 | seq_puts(seq, ",usrquota"); | |
656 | if (REISERFS_SB(s)->s_qf_names[GRPQUOTA]) | |
657 | seq_printf(seq, ",grpjquota=%s", REISERFS_SB(s)->s_qf_names[GRPQUOTA]); | |
658 | else if (opts & (1 << REISERFS_GRPQUOTA)) | |
659 | seq_puts(seq, ",grpquota"); | |
660 | if (REISERFS_SB(s)->s_jquota_fmt) { | |
661 | if (REISERFS_SB(s)->s_jquota_fmt == QFMT_VFS_OLD) | |
662 | seq_puts(seq, ",jqfmt=vfsold"); | |
663 | else if (REISERFS_SB(s)->s_jquota_fmt == QFMT_VFS_V0) | |
664 | seq_puts(seq, ",jqfmt=vfsv0"); | |
665 | } | |
666 | #endif | |
667 | ||
668 | /* Block allocator options */ | |
669 | if (opts & (1 << REISERFS_NO_BORDER)) | |
670 | seq_puts(seq, ",block-allocator=noborder"); | |
671 | if (opts & (1 << REISERFS_NO_UNHASHED_RELOCATION)) | |
672 | seq_puts(seq, ",block-allocator=no_unhashed_relocation"); | |
673 | if (opts & (1 << REISERFS_HASHED_RELOCATION)) | |
674 | seq_puts(seq, ",block-allocator=hashed_relocation"); | |
675 | if (opts & (1 << REISERFS_TEST4)) | |
676 | seq_puts(seq, ",block-allocator=test4"); | |
677 | show_alloc_options(seq, s); | |
678 | return 0; | |
679 | } | |
680 | ||
1da177e4 | 681 | #ifdef CONFIG_QUOTA |
bd4c625c LT |
682 | static ssize_t reiserfs_quota_write(struct super_block *, int, const char *, |
683 | size_t, loff_t); | |
684 | static ssize_t reiserfs_quota_read(struct super_block *, int, char *, size_t, | |
685 | loff_t); | |
1da177e4 LT |
686 | #endif |
687 | ||
ee9b6d61 | 688 | static const struct super_operations reiserfs_sops = { |
bd4c625c LT |
689 | .alloc_inode = reiserfs_alloc_inode, |
690 | .destroy_inode = reiserfs_destroy_inode, | |
691 | .write_inode = reiserfs_write_inode, | |
692 | .dirty_inode = reiserfs_dirty_inode, | |
845a2cc0 | 693 | .evict_inode = reiserfs_evict_inode, |
bd4c625c LT |
694 | .put_super = reiserfs_put_super, |
695 | .write_super = reiserfs_write_super, | |
696 | .sync_fs = reiserfs_sync_fs, | |
c4be0c1d TS |
697 | .freeze_fs = reiserfs_freeze, |
698 | .unfreeze_fs = reiserfs_unfreeze, | |
bd4c625c LT |
699 | .statfs = reiserfs_statfs, |
700 | .remount_fs = reiserfs_remount, | |
c3aa0776 | 701 | .show_options = reiserfs_show_options, |
1da177e4 | 702 | #ifdef CONFIG_QUOTA |
bd4c625c LT |
703 | .quota_read = reiserfs_quota_read, |
704 | .quota_write = reiserfs_quota_write, | |
1da177e4 LT |
705 | #endif |
706 | }; | |
707 | ||
708 | #ifdef CONFIG_QUOTA | |
709 | #define QTYPE2NAME(t) ((t)==USRQUOTA?"user":"group") | |
710 | ||
1da177e4 LT |
711 | static int reiserfs_write_dquot(struct dquot *); |
712 | static int reiserfs_acquire_dquot(struct dquot *); | |
713 | static int reiserfs_release_dquot(struct dquot *); | |
714 | static int reiserfs_mark_dquot_dirty(struct dquot *); | |
715 | static int reiserfs_write_info(struct super_block *, int); | |
f00c9e44 | 716 | static int reiserfs_quota_on(struct super_block *, int, int, struct path *); |
1da177e4 | 717 | |
61e225dc | 718 | static const struct dquot_operations reiserfs_quota_operations = { |
bd4c625c LT |
719 | .write_dquot = reiserfs_write_dquot, |
720 | .acquire_dquot = reiserfs_acquire_dquot, | |
721 | .release_dquot = reiserfs_release_dquot, | |
722 | .mark_dirty = reiserfs_mark_dquot_dirty, | |
723 | .write_info = reiserfs_write_info, | |
4103003b JK |
724 | .alloc_dquot = dquot_alloc, |
725 | .destroy_dquot = dquot_destroy, | |
1da177e4 LT |
726 | }; |
727 | ||
0d54b217 | 728 | static const struct quotactl_ops reiserfs_qctl_operations = { |
bd4c625c | 729 | .quota_on = reiserfs_quota_on, |
287a8095 CH |
730 | .quota_off = dquot_quota_off, |
731 | .quota_sync = dquot_quota_sync, | |
732 | .get_info = dquot_get_dqinfo, | |
733 | .set_info = dquot_set_dqinfo, | |
734 | .get_dqblk = dquot_get_dqblk, | |
735 | .set_dqblk = dquot_set_dqblk, | |
1da177e4 LT |
736 | }; |
737 | #endif | |
738 | ||
39655164 | 739 | static const struct export_operations reiserfs_export_ops = { |
bd4c625c | 740 | .encode_fh = reiserfs_encode_fh, |
be55caf1 CH |
741 | .fh_to_dentry = reiserfs_fh_to_dentry, |
742 | .fh_to_parent = reiserfs_fh_to_parent, | |
bd4c625c | 743 | .get_parent = reiserfs_get_parent, |
bd4c625c | 744 | }; |
1da177e4 LT |
745 | |
746 | /* this struct is used in reiserfs_getopt () for containing the value for those | |
747 | mount options that have values rather than being toggles. */ | |
748 | typedef struct { | |
bd4c625c LT |
749 | char *value; |
750 | int setmask; /* bitmask which is to set on mount_options bitmask when this | |
751 | value is found, 0 is no bits are to be changed. */ | |
752 | int clrmask; /* bitmask which is to clear on mount_options bitmask when this | |
753 | value is found, 0 is no bits are to be changed. This is | |
754 | applied BEFORE setmask */ | |
1da177e4 LT |
755 | } arg_desc_t; |
756 | ||
757 | /* Set this bit in arg_required to allow empty arguments */ | |
758 | #define REISERFS_OPT_ALLOWEMPTY 31 | |
759 | ||
760 | /* this struct is used in reiserfs_getopt() for describing the set of reiserfs | |
761 | mount options */ | |
762 | typedef struct { | |
bd4c625c LT |
763 | char *option_name; |
764 | int arg_required; /* 0 if argument is not required, not 0 otherwise */ | |
765 | const arg_desc_t *values; /* list of values accepted by an option */ | |
766 | int setmask; /* bitmask which is to set on mount_options bitmask when this | |
767 | value is found, 0 is no bits are to be changed. */ | |
768 | int clrmask; /* bitmask which is to clear on mount_options bitmask when this | |
769 | value is found, 0 is no bits are to be changed. This is | |
770 | applied BEFORE setmask */ | |
1da177e4 LT |
771 | } opt_desc_t; |
772 | ||
773 | /* possible values for -o data= */ | |
774 | static const arg_desc_t logging_mode[] = { | |
bd4c625c LT |
775 | {"ordered", 1 << REISERFS_DATA_ORDERED, |
776 | (1 << REISERFS_DATA_LOG | 1 << REISERFS_DATA_WRITEBACK)}, | |
777 | {"journal", 1 << REISERFS_DATA_LOG, | |
778 | (1 << REISERFS_DATA_ORDERED | 1 << REISERFS_DATA_WRITEBACK)}, | |
779 | {"writeback", 1 << REISERFS_DATA_WRITEBACK, | |
780 | (1 << REISERFS_DATA_ORDERED | 1 << REISERFS_DATA_LOG)}, | |
cd02b966 | 781 | {.value = NULL} |
1da177e4 LT |
782 | }; |
783 | ||
784 | /* possible values for -o barrier= */ | |
785 | static const arg_desc_t barrier_mode[] = { | |
bd4c625c LT |
786 | {"none", 1 << REISERFS_BARRIER_NONE, 1 << REISERFS_BARRIER_FLUSH}, |
787 | {"flush", 1 << REISERFS_BARRIER_FLUSH, 1 << REISERFS_BARRIER_NONE}, | |
cd02b966 | 788 | {.value = NULL} |
1da177e4 LT |
789 | }; |
790 | ||
791 | /* possible values for "-o block-allocator=" and bits which are to be set in | |
792 | s_mount_opt of reiserfs specific part of in-core super block */ | |
793 | static const arg_desc_t balloc[] = { | |
bd4c625c LT |
794 | {"noborder", 1 << REISERFS_NO_BORDER, 0}, |
795 | {"border", 0, 1 << REISERFS_NO_BORDER}, | |
796 | {"no_unhashed_relocation", 1 << REISERFS_NO_UNHASHED_RELOCATION, 0}, | |
797 | {"hashed_relocation", 1 << REISERFS_HASHED_RELOCATION, 0}, | |
798 | {"test4", 1 << REISERFS_TEST4, 0}, | |
799 | {"notest4", 0, 1 << REISERFS_TEST4}, | |
800 | {NULL, 0, 0} | |
1da177e4 LT |
801 | }; |
802 | ||
803 | static const arg_desc_t tails[] = { | |
bd4c625c LT |
804 | {"on", 1 << REISERFS_LARGETAIL, 1 << REISERFS_SMALLTAIL}, |
805 | {"off", 0, (1 << REISERFS_LARGETAIL) | (1 << REISERFS_SMALLTAIL)}, | |
806 | {"small", 1 << REISERFS_SMALLTAIL, 1 << REISERFS_LARGETAIL}, | |
807 | {NULL, 0, 0} | |
1da177e4 LT |
808 | }; |
809 | ||
810 | static const arg_desc_t error_actions[] = { | |
bd4c625c LT |
811 | {"panic", 1 << REISERFS_ERROR_PANIC, |
812 | (1 << REISERFS_ERROR_RO | 1 << REISERFS_ERROR_CONTINUE)}, | |
813 | {"ro-remount", 1 << REISERFS_ERROR_RO, | |
814 | (1 << REISERFS_ERROR_PANIC | 1 << REISERFS_ERROR_CONTINUE)}, | |
1da177e4 | 815 | #ifdef REISERFS_JOURNAL_ERROR_ALLOWS_NO_LOG |
bd4c625c LT |
816 | {"continue", 1 << REISERFS_ERROR_CONTINUE, |
817 | (1 << REISERFS_ERROR_PANIC | 1 << REISERFS_ERROR_RO)}, | |
1da177e4 | 818 | #endif |
bd4c625c | 819 | {NULL, 0, 0}, |
1da177e4 LT |
820 | }; |
821 | ||
1da177e4 LT |
822 | /* proceed only one option from a list *cur - string containing of mount options |
823 | opts - array of options which are accepted | |
824 | opt_arg - if option is found and requires an argument and if it is specifed | |
825 | in the input - pointer to the argument is stored here | |
826 | bit_flags - if option requires to set a certain bit - it is set here | |
827 | return -1 if unknown option is found, opt->arg_required otherwise */ | |
bd4c625c LT |
828 | static int reiserfs_getopt(struct super_block *s, char **cur, opt_desc_t * opts, |
829 | char **opt_arg, unsigned long *bit_flags) | |
1da177e4 | 830 | { |
bd4c625c | 831 | char *p; |
0222e657 | 832 | /* foo=bar, |
bd4c625c LT |
833 | ^ ^ ^ |
834 | | | +-- option_end | |
835 | | +-- arg_start | |
836 | +-- option_start | |
837 | */ | |
838 | const opt_desc_t *opt; | |
839 | const arg_desc_t *arg; | |
840 | ||
841 | p = *cur; | |
842 | ||
843 | /* assume argument cannot contain commas */ | |
844 | *cur = strchr(p, ','); | |
845 | if (*cur) { | |
846 | *(*cur) = '\0'; | |
847 | (*cur)++; | |
848 | } | |
849 | ||
850 | if (!strncmp(p, "alloc=", 6)) { | |
851 | /* Ugly special case, probably we should redo options parser so that | |
852 | it can understand several arguments for some options, also so that | |
853 | it can fill several bitfields with option values. */ | |
854 | if (reiserfs_parse_alloc_options(s, p + 6)) { | |
855 | return -1; | |
856 | } else { | |
857 | return 0; | |
858 | } | |
859 | } | |
860 | ||
861 | /* for every option in the list */ | |
862 | for (opt = opts; opt->option_name; opt++) { | |
863 | if (!strncmp(p, opt->option_name, strlen(opt->option_name))) { | |
864 | if (bit_flags) { | |
865 | if (opt->clrmask == | |
866 | (1 << REISERFS_UNSUPPORTED_OPT)) | |
45b03d5e JM |
867 | reiserfs_warning(s, "super-6500", |
868 | "%s not supported.\n", | |
bd4c625c LT |
869 | p); |
870 | else | |
871 | *bit_flags &= ~opt->clrmask; | |
872 | if (opt->setmask == | |
873 | (1 << REISERFS_UNSUPPORTED_OPT)) | |
45b03d5e JM |
874 | reiserfs_warning(s, "super-6501", |
875 | "%s not supported.\n", | |
bd4c625c LT |
876 | p); |
877 | else | |
878 | *bit_flags |= opt->setmask; | |
879 | } | |
880 | break; | |
881 | } | |
882 | } | |
883 | if (!opt->option_name) { | |
45b03d5e JM |
884 | reiserfs_warning(s, "super-6502", |
885 | "unknown mount option \"%s\"", p); | |
bd4c625c LT |
886 | return -1; |
887 | } | |
888 | ||
889 | p += strlen(opt->option_name); | |
890 | switch (*p) { | |
891 | case '=': | |
892 | if (!opt->arg_required) { | |
45b03d5e JM |
893 | reiserfs_warning(s, "super-6503", |
894 | "the option \"%s\" does not " | |
895 | "require an argument\n", | |
bd4c625c LT |
896 | opt->option_name); |
897 | return -1; | |
898 | } | |
899 | break; | |
900 | ||
901 | case 0: | |
902 | if (opt->arg_required) { | |
45b03d5e JM |
903 | reiserfs_warning(s, "super-6504", |
904 | "the option \"%s\" requires an " | |
905 | "argument\n", opt->option_name); | |
bd4c625c LT |
906 | return -1; |
907 | } | |
908 | break; | |
909 | default: | |
45b03d5e JM |
910 | reiserfs_warning(s, "super-6505", |
911 | "head of option \"%s\" is only correct\n", | |
bd4c625c LT |
912 | opt->option_name); |
913 | return -1; | |
914 | } | |
915 | ||
916 | /* move to the argument, or to next option if argument is not required */ | |
917 | p++; | |
918 | ||
919 | if (opt->arg_required | |
920 | && !(opt->arg_required & (1 << REISERFS_OPT_ALLOWEMPTY)) | |
921 | && !strlen(p)) { | |
922 | /* this catches "option=," if not allowed */ | |
45b03d5e JM |
923 | reiserfs_warning(s, "super-6506", |
924 | "empty argument for \"%s\"\n", | |
bd4c625c LT |
925 | opt->option_name); |
926 | return -1; | |
927 | } | |
928 | ||
929 | if (!opt->values) { | |
930 | /* *=NULLopt_arg contains pointer to argument */ | |
931 | *opt_arg = p; | |
932 | return opt->arg_required & ~(1 << REISERFS_OPT_ALLOWEMPTY); | |
933 | } | |
934 | ||
935 | /* values possible for this option are listed in opt->values */ | |
936 | for (arg = opt->values; arg->value; arg++) { | |
937 | if (!strcmp(p, arg->value)) { | |
938 | if (bit_flags) { | |
939 | *bit_flags &= ~arg->clrmask; | |
940 | *bit_flags |= arg->setmask; | |
941 | } | |
942 | return opt->arg_required; | |
943 | } | |
944 | } | |
945 | ||
45b03d5e JM |
946 | reiserfs_warning(s, "super-6506", |
947 | "bad value \"%s\" for option \"%s\"\n", p, | |
bd4c625c | 948 | opt->option_name); |
1da177e4 | 949 | return -1; |
1da177e4 LT |
950 | } |
951 | ||
952 | /* returns 0 if something is wrong in option string, 1 - otherwise */ | |
bd4c625c LT |
953 | static int reiserfs_parse_options(struct super_block *s, char *options, /* string given via mount's -o */ |
954 | unsigned long *mount_options, | |
955 | /* after the parsing phase, contains the | |
956 | collection of bitflags defining what | |
957 | mount options were selected. */ | |
958 | unsigned long *blocks, /* strtol-ed from NNN of resize=NNN */ | |
959 | char **jdev_name, | |
00b44197 JK |
960 | unsigned int *commit_max_age, |
961 | char **qf_names, | |
962 | unsigned int *qfmt) | |
1da177e4 | 963 | { |
bd4c625c LT |
964 | int c; |
965 | char *arg = NULL; | |
966 | char *pos; | |
967 | opt_desc_t opts[] = { | |
968 | /* Compatibility stuff, so that -o notail for old setups still work */ | |
969 | {"tails",.arg_required = 't',.values = tails}, | |
970 | {"notail",.clrmask = | |
971 | (1 << REISERFS_LARGETAIL) | (1 << REISERFS_SMALLTAIL)}, | |
972 | {"conv",.setmask = 1 << REISERFS_CONVERT}, | |
973 | {"attrs",.setmask = 1 << REISERFS_ATTRS}, | |
974 | {"noattrs",.clrmask = 1 << REISERFS_ATTRS}, | |
73422811 | 975 | {"expose_privroot", .setmask = 1 << REISERFS_EXPOSE_PRIVROOT}, |
1da177e4 | 976 | #ifdef CONFIG_REISERFS_FS_XATTR |
bd4c625c LT |
977 | {"user_xattr",.setmask = 1 << REISERFS_XATTRS_USER}, |
978 | {"nouser_xattr",.clrmask = 1 << REISERFS_XATTRS_USER}, | |
1da177e4 | 979 | #else |
bd4c625c LT |
980 | {"user_xattr",.setmask = 1 << REISERFS_UNSUPPORTED_OPT}, |
981 | {"nouser_xattr",.clrmask = 1 << REISERFS_UNSUPPORTED_OPT}, | |
1da177e4 LT |
982 | #endif |
983 | #ifdef CONFIG_REISERFS_FS_POSIX_ACL | |
bd4c625c LT |
984 | {"acl",.setmask = 1 << REISERFS_POSIXACL}, |
985 | {"noacl",.clrmask = 1 << REISERFS_POSIXACL}, | |
1da177e4 | 986 | #else |
bd4c625c LT |
987 | {"acl",.setmask = 1 << REISERFS_UNSUPPORTED_OPT}, |
988 | {"noacl",.clrmask = 1 << REISERFS_UNSUPPORTED_OPT}, | |
1da177e4 | 989 | #endif |
cd02b966 | 990 | {.option_name = "nolog"}, |
bd4c625c LT |
991 | {"replayonly",.setmask = 1 << REPLAYONLY}, |
992 | {"block-allocator",.arg_required = 'a',.values = balloc}, | |
993 | {"data",.arg_required = 'd',.values = logging_mode}, | |
994 | {"barrier",.arg_required = 'b',.values = barrier_mode}, | |
995 | {"resize",.arg_required = 'r',.values = NULL}, | |
996 | {"jdev",.arg_required = 'j',.values = NULL}, | |
997 | {"nolargeio",.arg_required = 'w',.values = NULL}, | |
998 | {"commit",.arg_required = 'c',.values = NULL}, | |
c3aa0776 JK |
999 | {"usrquota",.setmask = 1 << REISERFS_USRQUOTA}, |
1000 | {"grpquota",.setmask = 1 << REISERFS_GRPQUOTA}, | |
1001 | {"noquota",.clrmask = 1 << REISERFS_USRQUOTA | 1 << REISERFS_GRPQUOTA}, | |
bd4c625c LT |
1002 | {"errors",.arg_required = 'e',.values = error_actions}, |
1003 | {"usrjquota",.arg_required = | |
1004 | 'u' | (1 << REISERFS_OPT_ALLOWEMPTY),.values = NULL}, | |
1005 | {"grpjquota",.arg_required = | |
1006 | 'g' | (1 << REISERFS_OPT_ALLOWEMPTY),.values = NULL}, | |
1007 | {"jqfmt",.arg_required = 'f',.values = NULL}, | |
cd02b966 | 1008 | {.option_name = NULL} |
bd4c625c LT |
1009 | }; |
1010 | ||
1011 | *blocks = 0; | |
1012 | if (!options || !*options) | |
1013 | /* use default configuration: create tails, journaling on, no | |
1014 | conversion to newest format */ | |
1015 | return 1; | |
1016 | ||
1017 | for (pos = options; pos;) { | |
1018 | c = reiserfs_getopt(s, &pos, opts, &arg, mount_options); | |
1019 | if (c == -1) | |
1020 | /* wrong option is given */ | |
9a3bb301 | 1021 | return 0; |
1da177e4 | 1022 | |
bd4c625c LT |
1023 | if (c == 'r') { |
1024 | char *p; | |
1025 | ||
1026 | p = NULL; | |
1027 | /* "resize=NNN" or "resize=auto" */ | |
1028 | ||
1029 | if (!strcmp(arg, "auto")) { | |
1030 | /* From JFS code, to auto-get the size. */ | |
1031 | *blocks = | |
1032 | s->s_bdev->bd_inode->i_size >> s-> | |
1033 | s_blocksize_bits; | |
1034 | } else { | |
1035 | *blocks = simple_strtoul(arg, &p, 0); | |
1036 | if (*p != '\0') { | |
1037 | /* NNN does not look like a number */ | |
45b03d5e JM |
1038 | reiserfs_warning(s, "super-6507", |
1039 | "bad value %s for " | |
1040 | "-oresize\n", arg); | |
bd4c625c LT |
1041 | return 0; |
1042 | } | |
1043 | } | |
1da177e4 | 1044 | } |
1da177e4 | 1045 | |
bd4c625c LT |
1046 | if (c == 'c') { |
1047 | char *p = NULL; | |
1048 | unsigned long val = simple_strtoul(arg, &p, 0); | |
1049 | /* commit=NNN (time in seconds) */ | |
1050 | if (*p != '\0' || val >= (unsigned int)-1) { | |
45b03d5e JM |
1051 | reiserfs_warning(s, "super-6508", |
1052 | "bad value %s for -ocommit\n", | |
bd4c625c LT |
1053 | arg); |
1054 | return 0; | |
1055 | } | |
1056 | *commit_max_age = (unsigned int)val; | |
1da177e4 | 1057 | } |
1da177e4 | 1058 | |
bd4c625c | 1059 | if (c == 'w') { |
45b03d5e JM |
1060 | reiserfs_warning(s, "super-6509", "nolargeio option " |
1061 | "is no longer supported"); | |
36b756f2 | 1062 | return 0; |
1da177e4 | 1063 | } |
1da177e4 | 1064 | |
bd4c625c LT |
1065 | if (c == 'j') { |
1066 | if (arg && *arg && jdev_name) { | |
1067 | if (*jdev_name) { //Hm, already assigned? | |
45b03d5e JM |
1068 | reiserfs_warning(s, "super-6510", |
1069 | "journal device was " | |
1070 | "already specified to " | |
1071 | "be %s", *jdev_name); | |
bd4c625c LT |
1072 | return 0; |
1073 | } | |
1074 | *jdev_name = arg; | |
1075 | } | |
1da177e4 | 1076 | } |
bd4c625c LT |
1077 | #ifdef CONFIG_QUOTA |
1078 | if (c == 'u' || c == 'g') { | |
1079 | int qtype = c == 'u' ? USRQUOTA : GRPQUOTA; | |
1080 | ||
6929f891 | 1081 | if (sb_any_quota_loaded(s) && |
00b44197 | 1082 | (!*arg != !REISERFS_SB(s)->s_qf_names[qtype])) { |
45b03d5e JM |
1083 | reiserfs_warning(s, "super-6511", |
1084 | "cannot change journaled " | |
1085 | "quota options when quota " | |
1086 | "turned on."); | |
bd4c625c LT |
1087 | return 0; |
1088 | } | |
1089 | if (*arg) { /* Some filename specified? */ | |
1090 | if (REISERFS_SB(s)->s_qf_names[qtype] | |
1091 | && strcmp(REISERFS_SB(s)->s_qf_names[qtype], | |
1092 | arg)) { | |
45b03d5e JM |
1093 | reiserfs_warning(s, "super-6512", |
1094 | "%s quota file " | |
1095 | "already specified.", | |
bd4c625c LT |
1096 | QTYPE2NAME(qtype)); |
1097 | return 0; | |
1098 | } | |
1099 | if (strchr(arg, '/')) { | |
45b03d5e JM |
1100 | reiserfs_warning(s, "super-6513", |
1101 | "quotafile must be " | |
1102 | "on filesystem root."); | |
bd4c625c LT |
1103 | return 0; |
1104 | } | |
00b44197 | 1105 | qf_names[qtype] = |
bd4c625c | 1106 | kmalloc(strlen(arg) + 1, GFP_KERNEL); |
00b44197 | 1107 | if (!qf_names[qtype]) { |
45b03d5e JM |
1108 | reiserfs_warning(s, "reiserfs-2502", |
1109 | "not enough memory " | |
1110 | "for storing " | |
1111 | "quotafile name."); | |
bd4c625c LT |
1112 | return 0; |
1113 | } | |
00b44197 | 1114 | strcpy(qf_names[qtype], arg); |
c3aa0776 JK |
1115 | if (qtype == USRQUOTA) |
1116 | *mount_options |= 1 << REISERFS_USRQUOTA; | |
1117 | else | |
1118 | *mount_options |= 1 << REISERFS_GRPQUOTA; | |
bd4c625c | 1119 | } else { |
00b44197 JK |
1120 | if (qf_names[qtype] != |
1121 | REISERFS_SB(s)->s_qf_names[qtype]) | |
1122 | kfree(qf_names[qtype]); | |
1123 | qf_names[qtype] = NULL; | |
c3aa0776 JK |
1124 | if (qtype == USRQUOTA) |
1125 | *mount_options &= ~(1 << REISERFS_USRQUOTA); | |
1126 | else | |
1127 | *mount_options &= ~(1 << REISERFS_GRPQUOTA); | |
bd4c625c | 1128 | } |
1da177e4 | 1129 | } |
bd4c625c LT |
1130 | if (c == 'f') { |
1131 | if (!strcmp(arg, "vfsold")) | |
00b44197 | 1132 | *qfmt = QFMT_VFS_OLD; |
bd4c625c | 1133 | else if (!strcmp(arg, "vfsv0")) |
00b44197 | 1134 | *qfmt = QFMT_VFS_V0; |
bd4c625c | 1135 | else { |
45b03d5e JM |
1136 | reiserfs_warning(s, "super-6514", |
1137 | "unknown quota format " | |
1138 | "specified."); | |
bd4c625c LT |
1139 | return 0; |
1140 | } | |
6929f891 | 1141 | if (sb_any_quota_loaded(s) && |
00b44197 | 1142 | *qfmt != REISERFS_SB(s)->s_jquota_fmt) { |
45b03d5e JM |
1143 | reiserfs_warning(s, "super-6515", |
1144 | "cannot change journaled " | |
1145 | "quota options when quota " | |
1146 | "turned on."); | |
00b44197 JK |
1147 | return 0; |
1148 | } | |
1da177e4 | 1149 | } |
bd4c625c LT |
1150 | #else |
1151 | if (c == 'u' || c == 'g' || c == 'f') { | |
45b03d5e JM |
1152 | reiserfs_warning(s, "reiserfs-2503", "journaled " |
1153 | "quota options not supported."); | |
bd4c625c | 1154 | return 0; |
1da177e4 | 1155 | } |
bd4c625c LT |
1156 | #endif |
1157 | } | |
1158 | ||
1159 | #ifdef CONFIG_QUOTA | |
00b44197 JK |
1160 | if (!REISERFS_SB(s)->s_jquota_fmt && !*qfmt |
1161 | && (qf_names[USRQUOTA] || qf_names[GRPQUOTA])) { | |
45b03d5e JM |
1162 | reiserfs_warning(s, "super-6515", |
1163 | "journaled quota format not specified."); | |
1da177e4 | 1164 | return 0; |
1da177e4 | 1165 | } |
c3aa0776 JK |
1166 | if ((!(*mount_options & (1 << REISERFS_USRQUOTA)) && |
1167 | sb_has_quota_loaded(s, USRQUOTA)) || | |
1168 | (!(*mount_options & (1 << REISERFS_GRPQUOTA)) && | |
1169 | sb_has_quota_loaded(s, GRPQUOTA))) { | |
45b03d5e JM |
1170 | reiserfs_warning(s, "super-6516", "quota options must " |
1171 | "be present when quota is turned on."); | |
bd4c625c | 1172 | return 0; |
1da177e4 LT |
1173 | } |
1174 | #endif | |
556a2a45 | 1175 | |
bd4c625c | 1176 | return 1; |
1da177e4 LT |
1177 | } |
1178 | ||
bd4c625c LT |
1179 | static void switch_data_mode(struct super_block *s, unsigned long mode) |
1180 | { | |
1181 | REISERFS_SB(s)->s_mount_opt &= ~((1 << REISERFS_DATA_LOG) | | |
1182 | (1 << REISERFS_DATA_ORDERED) | | |
1183 | (1 << REISERFS_DATA_WRITEBACK)); | |
1184 | REISERFS_SB(s)->s_mount_opt |= (1 << mode); | |
1da177e4 LT |
1185 | } |
1186 | ||
1187 | static void handle_data_mode(struct super_block *s, unsigned long mount_options) | |
1188 | { | |
bd4c625c LT |
1189 | if (mount_options & (1 << REISERFS_DATA_LOG)) { |
1190 | if (!reiserfs_data_log(s)) { | |
1191 | switch_data_mode(s, REISERFS_DATA_LOG); | |
1192 | reiserfs_info(s, "switching to journaled data mode\n"); | |
1193 | } | |
1194 | } else if (mount_options & (1 << REISERFS_DATA_ORDERED)) { | |
1195 | if (!reiserfs_data_ordered(s)) { | |
1196 | switch_data_mode(s, REISERFS_DATA_ORDERED); | |
1197 | reiserfs_info(s, "switching to ordered data mode\n"); | |
1198 | } | |
1199 | } else if (mount_options & (1 << REISERFS_DATA_WRITEBACK)) { | |
1200 | if (!reiserfs_data_writeback(s)) { | |
1201 | switch_data_mode(s, REISERFS_DATA_WRITEBACK); | |
1202 | reiserfs_info(s, "switching to writeback data mode\n"); | |
1203 | } | |
1204 | } | |
1da177e4 LT |
1205 | } |
1206 | ||
bd4c625c LT |
1207 | static void handle_barrier_mode(struct super_block *s, unsigned long bits) |
1208 | { | |
1209 | int flush = (1 << REISERFS_BARRIER_FLUSH); | |
1210 | int none = (1 << REISERFS_BARRIER_NONE); | |
1211 | int all_barrier = flush | none; | |
1212 | ||
1213 | if (bits & all_barrier) { | |
1214 | REISERFS_SB(s)->s_mount_opt &= ~all_barrier; | |
1215 | if (bits & flush) { | |
1216 | REISERFS_SB(s)->s_mount_opt |= flush; | |
1217 | printk("reiserfs: enabling write barrier flush mode\n"); | |
1218 | } else if (bits & none) { | |
1219 | REISERFS_SB(s)->s_mount_opt |= none; | |
1220 | printk("reiserfs: write barriers turned off\n"); | |
1221 | } | |
1222 | } | |
1da177e4 LT |
1223 | } |
1224 | ||
bd4c625c | 1225 | static void handle_attrs(struct super_block *s) |
1da177e4 | 1226 | { |
bd4c625c | 1227 | struct reiserfs_super_block *rs = SB_DISK_SUPER_BLOCK(s); |
1da177e4 | 1228 | |
bd4c625c LT |
1229 | if (reiserfs_attrs(s)) { |
1230 | if (old_format_only(s)) { | |
45b03d5e JM |
1231 | reiserfs_warning(s, "super-6517", "cannot support " |
1232 | "attributes on 3.5.x disk format"); | |
bd4c625c | 1233 | REISERFS_SB(s)->s_mount_opt &= ~(1 << REISERFS_ATTRS); |
1da177e4 LT |
1234 | return; |
1235 | } | |
bd4c625c | 1236 | if (!(le32_to_cpu(rs->s_flags) & reiserfs_attrs_cleared)) { |
45b03d5e JM |
1237 | reiserfs_warning(s, "super-6518", "cannot support " |
1238 | "attributes until flag is set in " | |
1239 | "super-block"); | |
bd4c625c | 1240 | REISERFS_SB(s)->s_mount_opt &= ~(1 << REISERFS_ATTRS); |
1da177e4 LT |
1241 | } |
1242 | } | |
1243 | } | |
1244 | ||
00b44197 JK |
1245 | #ifdef CONFIG_QUOTA |
1246 | static void handle_quota_files(struct super_block *s, char **qf_names, | |
1247 | unsigned int *qfmt) | |
1248 | { | |
1249 | int i; | |
1250 | ||
1251 | for (i = 0; i < MAXQUOTAS; i++) { | |
1252 | if (qf_names[i] != REISERFS_SB(s)->s_qf_names[i]) | |
1253 | kfree(REISERFS_SB(s)->s_qf_names[i]); | |
1254 | REISERFS_SB(s)->s_qf_names[i] = qf_names[i]; | |
1255 | } | |
a06d789b JK |
1256 | if (*qfmt) |
1257 | REISERFS_SB(s)->s_jquota_fmt = *qfmt; | |
00b44197 JK |
1258 | } |
1259 | #endif | |
1260 | ||
bd4c625c | 1261 | static int reiserfs_remount(struct super_block *s, int *mount_flags, char *arg) |
1da177e4 | 1262 | { |
bd4c625c LT |
1263 | struct reiserfs_super_block *rs; |
1264 | struct reiserfs_transaction_handle th; | |
1265 | unsigned long blocks; | |
1266 | unsigned long mount_options = REISERFS_SB(s)->s_mount_opt; | |
1267 | unsigned long safe_mask = 0; | |
1268 | unsigned int commit_max_age = (unsigned int)-1; | |
1269 | struct reiserfs_journal *journal = SB_JOURNAL(s); | |
cdf6ccc8 | 1270 | char *new_opts = kstrdup(arg, GFP_KERNEL); |
bd4c625c | 1271 | int err; |
00b44197 JK |
1272 | char *qf_names[MAXQUOTAS]; |
1273 | unsigned int qfmt = 0; | |
1da177e4 | 1274 | #ifdef CONFIG_QUOTA |
bd4c625c | 1275 | int i; |
8ebc4232 | 1276 | #endif |
00b44197 | 1277 | |
8ebc4232 | 1278 | reiserfs_write_lock(s); |
00b44197 | 1279 | |
8ebc4232 | 1280 | #ifdef CONFIG_QUOTA |
00b44197 | 1281 | memcpy(qf_names, REISERFS_SB(s)->s_qf_names, sizeof(qf_names)); |
1da177e4 LT |
1282 | #endif |
1283 | ||
bd4c625c | 1284 | rs = SB_DISK_SUPER_BLOCK(s); |
1da177e4 | 1285 | |
bd4c625c | 1286 | if (!reiserfs_parse_options |
00b44197 JK |
1287 | (s, arg, &mount_options, &blocks, NULL, &commit_max_age, |
1288 | qf_names, &qfmt)) { | |
1da177e4 | 1289 | #ifdef CONFIG_QUOTA |
00b44197 JK |
1290 | for (i = 0; i < MAXQUOTAS; i++) |
1291 | if (qf_names[i] != REISERFS_SB(s)->s_qf_names[i]) | |
1292 | kfree(qf_names[i]); | |
1da177e4 | 1293 | #endif |
cdf6ccc8 MS |
1294 | err = -EINVAL; |
1295 | goto out_err; | |
bd4c625c | 1296 | } |
00b44197 JK |
1297 | #ifdef CONFIG_QUOTA |
1298 | handle_quota_files(s, qf_names, &qfmt); | |
1299 | #endif | |
bd4c625c LT |
1300 | |
1301 | handle_attrs(s); | |
1302 | ||
1303 | /* Add options that are safe here */ | |
1304 | safe_mask |= 1 << REISERFS_SMALLTAIL; | |
1305 | safe_mask |= 1 << REISERFS_LARGETAIL; | |
1306 | safe_mask |= 1 << REISERFS_NO_BORDER; | |
1307 | safe_mask |= 1 << REISERFS_NO_UNHASHED_RELOCATION; | |
1308 | safe_mask |= 1 << REISERFS_HASHED_RELOCATION; | |
1309 | safe_mask |= 1 << REISERFS_TEST4; | |
1310 | safe_mask |= 1 << REISERFS_ATTRS; | |
1311 | safe_mask |= 1 << REISERFS_XATTRS_USER; | |
1312 | safe_mask |= 1 << REISERFS_POSIXACL; | |
1313 | safe_mask |= 1 << REISERFS_BARRIER_FLUSH; | |
1314 | safe_mask |= 1 << REISERFS_BARRIER_NONE; | |
1315 | safe_mask |= 1 << REISERFS_ERROR_RO; | |
1316 | safe_mask |= 1 << REISERFS_ERROR_CONTINUE; | |
1317 | safe_mask |= 1 << REISERFS_ERROR_PANIC; | |
c3aa0776 JK |
1318 | safe_mask |= 1 << REISERFS_USRQUOTA; |
1319 | safe_mask |= 1 << REISERFS_GRPQUOTA; | |
bd4c625c LT |
1320 | |
1321 | /* Update the bitmask, taking care to keep | |
1322 | * the bits we're not allowed to change here */ | |
1323 | REISERFS_SB(s)->s_mount_opt = | |
1324 | (REISERFS_SB(s)-> | |
1325 | s_mount_opt & ~safe_mask) | (mount_options & safe_mask); | |
1326 | ||
1327 | if (commit_max_age != 0 && commit_max_age != (unsigned int)-1) { | |
1328 | journal->j_max_commit_age = commit_max_age; | |
1329 | journal->j_max_trans_age = commit_max_age; | |
1330 | } else if (commit_max_age == 0) { | |
1331 | /* 0 means restore defaults. */ | |
1332 | journal->j_max_commit_age = journal->j_default_max_commit_age; | |
1333 | journal->j_max_trans_age = JOURNAL_MAX_TRANS_AGE; | |
1334 | } | |
1335 | ||
1336 | if (blocks) { | |
cdf6ccc8 MS |
1337 | err = reiserfs_resize(s, blocks); |
1338 | if (err != 0) | |
1339 | goto out_err; | |
bd4c625c LT |
1340 | } |
1341 | ||
1342 | if (*mount_flags & MS_RDONLY) { | |
1343 | reiserfs_xattr_init(s, *mount_flags); | |
1344 | /* remount read-only */ | |
1345 | if (s->s_flags & MS_RDONLY) | |
1346 | /* it is read-only already */ | |
cdf6ccc8 | 1347 | goto out_ok; |
c79d967d | 1348 | |
0f0dd62f CH |
1349 | err = dquot_suspend(s, -1); |
1350 | if (err < 0) | |
c79d967d | 1351 | goto out_err; |
c79d967d | 1352 | |
bd4c625c LT |
1353 | /* try to remount file system with read-only permissions */ |
1354 | if (sb_umount_state(rs) == REISERFS_VALID_FS | |
1355 | || REISERFS_SB(s)->s_mount_state != REISERFS_VALID_FS) { | |
cdf6ccc8 | 1356 | goto out_ok; |
bd4c625c LT |
1357 | } |
1358 | ||
1359 | err = journal_begin(&th, s, 10); | |
1360 | if (err) | |
cdf6ccc8 | 1361 | goto out_err; |
bd4c625c LT |
1362 | |
1363 | /* Mounting a rw partition read-only. */ | |
1364 | reiserfs_prepare_for_journal(s, SB_BUFFER_WITH_SB(s), 1); | |
1365 | set_sb_umount_state(rs, REISERFS_SB(s)->s_mount_state); | |
1366 | journal_mark_dirty(&th, s, SB_BUFFER_WITH_SB(s)); | |
1367 | } else { | |
1368 | /* remount read-write */ | |
1369 | if (!(s->s_flags & MS_RDONLY)) { | |
1370 | reiserfs_xattr_init(s, *mount_flags); | |
cdf6ccc8 | 1371 | goto out_ok; /* We are read-write already */ |
bd4c625c LT |
1372 | } |
1373 | ||
cdf6ccc8 MS |
1374 | if (reiserfs_is_journal_aborted(journal)) { |
1375 | err = journal->j_errno; | |
1376 | goto out_err; | |
1377 | } | |
bd4c625c LT |
1378 | |
1379 | handle_data_mode(s, mount_options); | |
1380 | handle_barrier_mode(s, mount_options); | |
1381 | REISERFS_SB(s)->s_mount_state = sb_umount_state(rs); | |
1382 | s->s_flags &= ~MS_RDONLY; /* now it is safe to call journal_begin */ | |
1383 | err = journal_begin(&th, s, 10); | |
1384 | if (err) | |
cdf6ccc8 | 1385 | goto out_err; |
bd4c625c LT |
1386 | |
1387 | /* Mount a partition which is read-only, read-write */ | |
1388 | reiserfs_prepare_for_journal(s, SB_BUFFER_WITH_SB(s), 1); | |
1389 | REISERFS_SB(s)->s_mount_state = sb_umount_state(rs); | |
1390 | s->s_flags &= ~MS_RDONLY; | |
1391 | set_sb_umount_state(rs, REISERFS_ERROR_FS); | |
702d21c6 JM |
1392 | if (!old_format_only(s)) |
1393 | set_sb_mnt_count(rs, sb_mnt_count(rs) + 1); | |
bd4c625c LT |
1394 | /* mark_buffer_dirty (SB_BUFFER_WITH_SB (s), 1); */ |
1395 | journal_mark_dirty(&th, s, SB_BUFFER_WITH_SB(s)); | |
1396 | REISERFS_SB(s)->s_mount_state = REISERFS_VALID_FS; | |
1397 | } | |
1398 | /* this will force a full flush of all journal lists */ | |
1399 | SB_JOURNAL(s)->j_must_wait = 1; | |
1400 | err = journal_end(&th, s, 10); | |
1401 | if (err) | |
cdf6ccc8 | 1402 | goto out_err; |
bd4c625c LT |
1403 | s->s_dirt = 0; |
1404 | ||
1405 | if (!(*mount_flags & MS_RDONLY)) { | |
0f0dd62f | 1406 | dquot_resume(s, -1); |
bd4c625c LT |
1407 | finish_unfinished(s); |
1408 | reiserfs_xattr_init(s, *mount_flags); | |
1409 | } | |
1410 | ||
cdf6ccc8 | 1411 | out_ok: |
2a32cebd | 1412 | replace_mount_options(s, new_opts); |
8ebc4232 | 1413 | reiserfs_write_unlock(s); |
bd4c625c | 1414 | return 0; |
cdf6ccc8 MS |
1415 | |
1416 | out_err: | |
1417 | kfree(new_opts); | |
8ebc4232 | 1418 | reiserfs_write_unlock(s); |
cdf6ccc8 | 1419 | return err; |
1da177e4 LT |
1420 | } |
1421 | ||
bd4c625c | 1422 | static int read_super_block(struct super_block *s, int offset) |
1da177e4 | 1423 | { |
bd4c625c LT |
1424 | struct buffer_head *bh; |
1425 | struct reiserfs_super_block *rs; | |
1426 | int fs_blocksize; | |
1da177e4 | 1427 | |
bd4c625c LT |
1428 | bh = sb_bread(s, offset / s->s_blocksize); |
1429 | if (!bh) { | |
45b03d5e | 1430 | reiserfs_warning(s, "sh-2006", |
bd4c625c LT |
1431 | "bread failed (dev %s, block %lu, size %lu)", |
1432 | reiserfs_bdevname(s), offset / s->s_blocksize, | |
1433 | s->s_blocksize); | |
1434 | return 1; | |
1435 | } | |
1da177e4 | 1436 | |
bd4c625c LT |
1437 | rs = (struct reiserfs_super_block *)bh->b_data; |
1438 | if (!is_any_reiserfs_magic_string(rs)) { | |
1439 | brelse(bh); | |
1440 | return 1; | |
1441 | } | |
1442 | // | |
1443 | // ok, reiserfs signature (old or new) found in at the given offset | |
0222e657 | 1444 | // |
bd4c625c LT |
1445 | fs_blocksize = sb_blocksize(rs); |
1446 | brelse(bh); | |
1447 | sb_set_blocksize(s, fs_blocksize); | |
1da177e4 | 1448 | |
bd4c625c LT |
1449 | bh = sb_bread(s, offset / s->s_blocksize); |
1450 | if (!bh) { | |
45b03d5e JM |
1451 | reiserfs_warning(s, "sh-2007", |
1452 | "bread failed (dev %s, block %lu, size %lu)", | |
bd4c625c LT |
1453 | reiserfs_bdevname(s), offset / s->s_blocksize, |
1454 | s->s_blocksize); | |
1455 | return 1; | |
1456 | } | |
1da177e4 | 1457 | |
bd4c625c LT |
1458 | rs = (struct reiserfs_super_block *)bh->b_data; |
1459 | if (sb_blocksize(rs) != s->s_blocksize) { | |
45b03d5e JM |
1460 | reiserfs_warning(s, "sh-2011", "can't find a reiserfs " |
1461 | "filesystem on (dev %s, block %Lu, size %lu)", | |
bd4c625c LT |
1462 | reiserfs_bdevname(s), |
1463 | (unsigned long long)bh->b_blocknr, | |
1464 | s->s_blocksize); | |
1465 | brelse(bh); | |
1466 | return 1; | |
1467 | } | |
1da177e4 | 1468 | |
bd4c625c LT |
1469 | if (rs->s_v1.s_root_block == cpu_to_le32(-1)) { |
1470 | brelse(bh); | |
45b03d5e JM |
1471 | reiserfs_warning(s, "super-6519", "Unfinished reiserfsck " |
1472 | "--rebuild-tree run detected. Please run\n" | |
1473 | "reiserfsck --rebuild-tree and wait for a " | |
1474 | "completion. If that fails\n" | |
bd4c625c LT |
1475 | "get newer reiserfsprogs package"); |
1476 | return 1; | |
1da177e4 | 1477 | } |
1da177e4 | 1478 | |
bd4c625c LT |
1479 | SB_BUFFER_WITH_SB(s) = bh; |
1480 | SB_DISK_SUPER_BLOCK(s) = rs; | |
1481 | ||
1482 | if (is_reiserfs_jr(rs)) { | |
1483 | /* magic is of non-standard journal filesystem, look at s_version to | |
1484 | find which format is in use */ | |
1485 | if (sb_version(rs) == REISERFS_VERSION_2) | |
1d889d99 JM |
1486 | reiserfs_info(s, "found reiserfs format \"3.6\"" |
1487 | " with non-standard journal\n"); | |
bd4c625c | 1488 | else if (sb_version(rs) == REISERFS_VERSION_1) |
1d889d99 JM |
1489 | reiserfs_info(s, "found reiserfs format \"3.5\"" |
1490 | " with non-standard journal\n"); | |
bd4c625c | 1491 | else { |
45b03d5e JM |
1492 | reiserfs_warning(s, "sh-2012", "found unknown " |
1493 | "format \"%u\" of reiserfs with " | |
1494 | "non-standard magic", sb_version(rs)); | |
bd4c625c LT |
1495 | return 1; |
1496 | } | |
1497 | } else | |
1498 | /* s_version of standard format may contain incorrect information, | |
1499 | so we just look at the magic string */ | |
1500 | reiserfs_info(s, | |
1501 | "found reiserfs format \"%s\" with standard journal\n", | |
1502 | is_reiserfs_3_5(rs) ? "3.5" : "3.6"); | |
1503 | ||
1504 | s->s_op = &reiserfs_sops; | |
1505 | s->s_export_op = &reiserfs_export_ops; | |
1da177e4 | 1506 | #ifdef CONFIG_QUOTA |
bd4c625c LT |
1507 | s->s_qcop = &reiserfs_qctl_operations; |
1508 | s->dq_op = &reiserfs_quota_operations; | |
1da177e4 LT |
1509 | #endif |
1510 | ||
bd4c625c LT |
1511 | /* new format is limited by the 32 bit wide i_blocks field, want to |
1512 | ** be one full block below that. | |
1513 | */ | |
1514 | s->s_maxbytes = (512LL << 32) - s->s_blocksize; | |
1515 | return 0; | |
1da177e4 LT |
1516 | } |
1517 | ||
1da177e4 | 1518 | /* after journal replay, reread all bitmap and super blocks */ |
bd4c625c LT |
1519 | static int reread_meta_blocks(struct super_block *s) |
1520 | { | |
bd4c625c | 1521 | ll_rw_block(READ, 1, &(SB_BUFFER_WITH_SB(s))); |
8ebc4232 | 1522 | reiserfs_write_unlock(s); |
bd4c625c | 1523 | wait_on_buffer(SB_BUFFER_WITH_SB(s)); |
8ebc4232 | 1524 | reiserfs_write_lock(s); |
bd4c625c | 1525 | if (!buffer_uptodate(SB_BUFFER_WITH_SB(s))) { |
45b03d5e | 1526 | reiserfs_warning(s, "reiserfs-2504", "error reading the super"); |
bd4c625c LT |
1527 | return 1; |
1528 | } | |
1da177e4 | 1529 | |
bd4c625c | 1530 | return 0; |
bd4c625c | 1531 | } |
1da177e4 LT |
1532 | |
1533 | ///////////////////////////////////////////////////// | |
1534 | // hash detection stuff | |
1535 | ||
1da177e4 LT |
1536 | // if root directory is empty - we set default - Yura's - hash and |
1537 | // warn about it | |
1538 | // FIXME: we look for only one name in a directory. If tea and yura | |
1539 | // bith have the same value - we ask user to send report to the | |
1540 | // mailing list | |
bd4c625c | 1541 | static __u32 find_hash_out(struct super_block *s) |
1da177e4 | 1542 | { |
bd4c625c LT |
1543 | int retval; |
1544 | struct inode *inode; | |
1545 | struct cpu_key key; | |
1546 | INITIALIZE_PATH(path); | |
1547 | struct reiserfs_dir_entry de; | |
1548 | __u32 hash = DEFAULT_HASH; | |
1549 | ||
1550 | inode = s->s_root->d_inode; | |
1551 | ||
1552 | do { // Some serious "goto"-hater was there ;) | |
1553 | u32 teahash, r5hash, yurahash; | |
1554 | ||
1555 | make_cpu_key(&key, inode, ~0, TYPE_DIRENTRY, 3); | |
1556 | retval = search_by_entry_key(s, &key, &path, &de); | |
1557 | if (retval == IO_ERROR) { | |
1558 | pathrelse(&path); | |
1559 | return UNSET_HASH; | |
1560 | } | |
1561 | if (retval == NAME_NOT_FOUND) | |
1562 | de.de_entry_num--; | |
1563 | set_de_name_and_namelen(&de); | |
1564 | if (deh_offset(&(de.de_deh[de.de_entry_num])) == DOT_DOT_OFFSET) { | |
1565 | /* allow override in this case */ | |
1566 | if (reiserfs_rupasov_hash(s)) { | |
1567 | hash = YURA_HASH; | |
1568 | } | |
1d889d99 JM |
1569 | reiserfs_info(s, "FS seems to be empty, autodetect " |
1570 | "is using the default hash\n"); | |
bd4c625c LT |
1571 | break; |
1572 | } | |
1573 | r5hash = GET_HASH_VALUE(r5_hash(de.de_name, de.de_namelen)); | |
1574 | teahash = GET_HASH_VALUE(keyed_hash(de.de_name, de.de_namelen)); | |
1575 | yurahash = GET_HASH_VALUE(yura_hash(de.de_name, de.de_namelen)); | |
1576 | if (((teahash == r5hash) | |
1577 | && | |
1578 | (GET_HASH_VALUE(deh_offset(&(de.de_deh[de.de_entry_num]))) | |
1579 | == r5hash)) || ((teahash == yurahash) | |
1580 | && (yurahash == | |
1581 | GET_HASH_VALUE(deh_offset | |
1582 | (& | |
1583 | (de. | |
1584 | de_deh[de. | |
1585 | de_entry_num]))))) | |
1586 | || ((r5hash == yurahash) | |
1587 | && (yurahash == | |
1588 | GET_HASH_VALUE(deh_offset | |
1589 | (&(de.de_deh[de.de_entry_num])))))) { | |
45b03d5e JM |
1590 | reiserfs_warning(s, "reiserfs-2506", "Unable to " |
1591 | "automatically detect hash function. " | |
1592 | "Please mount with -o " | |
1593 | "hash={tea,rupasov,r5}"); | |
bd4c625c LT |
1594 | hash = UNSET_HASH; |
1595 | break; | |
1596 | } | |
1597 | if (GET_HASH_VALUE(deh_offset(&(de.de_deh[de.de_entry_num]))) == | |
1598 | yurahash) | |
1599 | hash = YURA_HASH; | |
1600 | else if (GET_HASH_VALUE | |
1601 | (deh_offset(&(de.de_deh[de.de_entry_num]))) == teahash) | |
1602 | hash = TEA_HASH; | |
1603 | else if (GET_HASH_VALUE | |
1604 | (deh_offset(&(de.de_deh[de.de_entry_num]))) == r5hash) | |
1605 | hash = R5_HASH; | |
1606 | else { | |
45b03d5e JM |
1607 | reiserfs_warning(s, "reiserfs-2506", |
1608 | "Unrecognised hash function"); | |
bd4c625c LT |
1609 | hash = UNSET_HASH; |
1610 | } | |
1611 | } while (0); | |
1612 | ||
1613 | pathrelse(&path); | |
1614 | return hash; | |
1da177e4 LT |
1615 | } |
1616 | ||
1617 | // finds out which hash names are sorted with | |
bd4c625c | 1618 | static int what_hash(struct super_block *s) |
1da177e4 | 1619 | { |
bd4c625c LT |
1620 | __u32 code; |
1621 | ||
1622 | code = sb_hash_function_code(SB_DISK_SUPER_BLOCK(s)); | |
1623 | ||
1624 | /* reiserfs_hash_detect() == true if any of the hash mount options | |
1625 | ** were used. We must check them to make sure the user isn't | |
1626 | ** using a bad hash value | |
1627 | */ | |
1628 | if (code == UNSET_HASH || reiserfs_hash_detect(s)) | |
1629 | code = find_hash_out(s); | |
1630 | ||
1631 | if (code != UNSET_HASH && reiserfs_hash_detect(s)) { | |
0222e657 JM |
1632 | /* detection has found the hash, and we must check against the |
1633 | ** mount options | |
bd4c625c LT |
1634 | */ |
1635 | if (reiserfs_rupasov_hash(s) && code != YURA_HASH) { | |
45b03d5e JM |
1636 | reiserfs_warning(s, "reiserfs-2507", |
1637 | "Error, %s hash detected, " | |
bd4c625c LT |
1638 | "unable to force rupasov hash", |
1639 | reiserfs_hashname(code)); | |
1640 | code = UNSET_HASH; | |
1641 | } else if (reiserfs_tea_hash(s) && code != TEA_HASH) { | |
45b03d5e JM |
1642 | reiserfs_warning(s, "reiserfs-2508", |
1643 | "Error, %s hash detected, " | |
bd4c625c LT |
1644 | "unable to force tea hash", |
1645 | reiserfs_hashname(code)); | |
1646 | code = UNSET_HASH; | |
1647 | } else if (reiserfs_r5_hash(s) && code != R5_HASH) { | |
45b03d5e JM |
1648 | reiserfs_warning(s, "reiserfs-2509", |
1649 | "Error, %s hash detected, " | |
bd4c625c LT |
1650 | "unable to force r5 hash", |
1651 | reiserfs_hashname(code)); | |
1652 | code = UNSET_HASH; | |
1653 | } | |
1654 | } else { | |
1655 | /* find_hash_out was not called or could not determine the hash */ | |
1656 | if (reiserfs_rupasov_hash(s)) { | |
1657 | code = YURA_HASH; | |
1658 | } else if (reiserfs_tea_hash(s)) { | |
1659 | code = TEA_HASH; | |
1660 | } else if (reiserfs_r5_hash(s)) { | |
1661 | code = R5_HASH; | |
1662 | } | |
1663 | } | |
1664 | ||
0222e657 | 1665 | /* if we are mounted RW, and we have a new valid hash code, update |
bd4c625c LT |
1666 | ** the super |
1667 | */ | |
1668 | if (code != UNSET_HASH && | |
1669 | !(s->s_flags & MS_RDONLY) && | |
1670 | code != sb_hash_function_code(SB_DISK_SUPER_BLOCK(s))) { | |
1671 | set_sb_hash_function_code(SB_DISK_SUPER_BLOCK(s), code); | |
1672 | } | |
1673 | return code; | |
1da177e4 LT |
1674 | } |
1675 | ||
1676 | // return pointer to appropriate function | |
bd4c625c | 1677 | static hashf_t hash_function(struct super_block *s) |
1da177e4 | 1678 | { |
bd4c625c LT |
1679 | switch (what_hash(s)) { |
1680 | case TEA_HASH: | |
1681 | reiserfs_info(s, "Using tea hash to sort names\n"); | |
1682 | return keyed_hash; | |
1683 | case YURA_HASH: | |
1684 | reiserfs_info(s, "Using rupasov hash to sort names\n"); | |
1685 | return yura_hash; | |
1686 | case R5_HASH: | |
1687 | reiserfs_info(s, "Using r5 hash to sort names\n"); | |
1688 | return r5_hash; | |
1689 | } | |
1690 | return NULL; | |
1da177e4 LT |
1691 | } |
1692 | ||
1693 | // this is used to set up correct value for old partitions | |
bd4c625c | 1694 | static int function2code(hashf_t func) |
1da177e4 | 1695 | { |
bd4c625c LT |
1696 | if (func == keyed_hash) |
1697 | return TEA_HASH; | |
1698 | if (func == yura_hash) | |
1699 | return YURA_HASH; | |
1700 | if (func == r5_hash) | |
1701 | return R5_HASH; | |
1da177e4 | 1702 | |
bd4c625c | 1703 | BUG(); // should never happen |
1da177e4 | 1704 | |
bd4c625c | 1705 | return 0; |
1da177e4 LT |
1706 | } |
1707 | ||
45b03d5e | 1708 | #define SWARN(silent, s, id, ...) \ |
1da177e4 | 1709 | if (!(silent)) \ |
45b03d5e | 1710 | reiserfs_warning(s, id, __VA_ARGS__) |
1da177e4 | 1711 | |
bd4c625c | 1712 | static int reiserfs_fill_super(struct super_block *s, void *data, int silent) |
1da177e4 | 1713 | { |
bd4c625c | 1714 | struct inode *root_inode; |
bd4c625c LT |
1715 | struct reiserfs_transaction_handle th; |
1716 | int old_format = 0; | |
1717 | unsigned long blocks; | |
1718 | unsigned int commit_max_age = 0; | |
1719 | int jinit_done = 0; | |
1720 | struct reiserfs_iget_args args; | |
1721 | struct reiserfs_super_block *rs; | |
1722 | char *jdev_name; | |
1723 | struct reiserfs_sb_info *sbi; | |
1724 | int errval = -EINVAL; | |
00b44197 JK |
1725 | char *qf_names[MAXQUOTAS] = {}; |
1726 | unsigned int qfmt = 0; | |
bd4c625c | 1727 | |
cdf6ccc8 MS |
1728 | save_mount_options(s, data); |
1729 | ||
01afb213 | 1730 | sbi = kzalloc(sizeof(struct reiserfs_sb_info), GFP_KERNEL); |
b7b7fa43 JM |
1731 | if (!sbi) |
1732 | return -ENOMEM; | |
bd4c625c | 1733 | s->s_fs_info = sbi; |
bd4c625c LT |
1734 | /* Set default values for options: non-aggressive tails, RO on errors */ |
1735 | REISERFS_SB(s)->s_mount_opt |= (1 << REISERFS_SMALLTAIL); | |
1736 | REISERFS_SB(s)->s_mount_opt |= (1 << REISERFS_ERROR_RO); | |
b4d5b10f | 1737 | REISERFS_SB(s)->s_mount_opt |= (1 << REISERFS_BARRIER_FLUSH); |
bd4c625c LT |
1738 | /* no preallocation minimum, be smart in |
1739 | reiserfs_file_write instead */ | |
1740 | REISERFS_SB(s)->s_alloc_options.preallocmin = 0; | |
1741 | /* Preallocate by 16 blocks (17-1) at once */ | |
1742 | REISERFS_SB(s)->s_alloc_options.preallocsize = 17; | |
bd4c625c LT |
1743 | /* setup default block allocator options */ |
1744 | reiserfs_init_alloc_options(s); | |
1745 | ||
8ebc4232 FW |
1746 | mutex_init(&REISERFS_SB(s)->lock); |
1747 | REISERFS_SB(s)->lock_depth = -1; | |
1748 | ||
bd4c625c LT |
1749 | jdev_name = NULL; |
1750 | if (reiserfs_parse_options | |
1751 | (s, (char *)data, &(sbi->s_mount_opt), &blocks, &jdev_name, | |
00b44197 | 1752 | &commit_max_age, qf_names, &qfmt) == 0) { |
f32485be | 1753 | goto error_unlocked; |
bd4c625c | 1754 | } |
c3aa0776 JK |
1755 | if (jdev_name && jdev_name[0]) { |
1756 | REISERFS_SB(s)->s_jdev = kstrdup(jdev_name, GFP_KERNEL); | |
1757 | if (!REISERFS_SB(s)->s_jdev) { | |
1758 | SWARN(silent, s, "", "Cannot allocate memory for " | |
1759 | "journal device name"); | |
1760 | goto error; | |
1761 | } | |
1762 | } | |
00b44197 JK |
1763 | #ifdef CONFIG_QUOTA |
1764 | handle_quota_files(s, qf_names, &qfmt); | |
1765 | #endif | |
bd4c625c LT |
1766 | |
1767 | if (blocks) { | |
45b03d5e | 1768 | SWARN(silent, s, "jmacd-7", "resize option for remount only"); |
f32485be | 1769 | goto error_unlocked; |
bd4c625c LT |
1770 | } |
1771 | ||
1772 | /* try old format (undistributed bitmap, super block in 8-th 1k block of a device) */ | |
1773 | if (!read_super_block(s, REISERFS_OLD_DISK_OFFSET_IN_BYTES)) | |
1774 | old_format = 1; | |
1775 | /* try new format (64-th 1k block), which can contain reiserfs super block */ | |
1776 | else if (read_super_block(s, REISERFS_DISK_OFFSET_IN_BYTES)) { | |
45b03d5e | 1777 | SWARN(silent, s, "sh-2021", "can not find reiserfs on %s", |
bd4c625c | 1778 | reiserfs_bdevname(s)); |
f32485be | 1779 | goto error_unlocked; |
bd4c625c LT |
1780 | } |
1781 | ||
1782 | rs = SB_DISK_SUPER_BLOCK(s); | |
1783 | /* Let's do basic sanity check to verify that underlying device is not | |
1784 | smaller than the filesystem. If the check fails then abort and scream, | |
1785 | because bad stuff will happen otherwise. */ | |
1786 | if (s->s_bdev && s->s_bdev->bd_inode | |
1787 | && i_size_read(s->s_bdev->bd_inode) < | |
1788 | sb_block_count(rs) * sb_blocksize(rs)) { | |
45b03d5e JM |
1789 | SWARN(silent, s, "", "Filesystem cannot be " |
1790 | "mounted because it is bigger than the device"); | |
1791 | SWARN(silent, s, "", "You may need to run fsck " | |
1792 | "or increase size of your LVM partition"); | |
1793 | SWARN(silent, s, "", "Or may be you forgot to " | |
1794 | "reboot after fdisk when it told you to"); | |
f32485be | 1795 | goto error_unlocked; |
bd4c625c LT |
1796 | } |
1797 | ||
1798 | sbi->s_mount_state = SB_REISERFS_STATE(s); | |
1799 | sbi->s_mount_state = REISERFS_VALID_FS; | |
1800 | ||
6f01046b | 1801 | if ((errval = reiserfs_init_bitmap_cache(s))) { |
45b03d5e | 1802 | SWARN(silent, s, "jmacd-8", "unable to read bitmap"); |
f32485be | 1803 | goto error_unlocked; |
bd4c625c | 1804 | } |
f32485be | 1805 | |
d2c89a42 | 1806 | errval = -EINVAL; |
1da177e4 | 1807 | #ifdef CONFIG_REISERFS_CHECK |
45b03d5e JM |
1808 | SWARN(silent, s, "", "CONFIG_REISERFS_CHECK is set ON"); |
1809 | SWARN(silent, s, "", "- it is slow mode for debugging."); | |
1da177e4 LT |
1810 | #endif |
1811 | ||
bd4c625c LT |
1812 | /* make data=ordered the default */ |
1813 | if (!reiserfs_data_log(s) && !reiserfs_data_ordered(s) && | |
1814 | !reiserfs_data_writeback(s)) { | |
1815 | REISERFS_SB(s)->s_mount_opt |= (1 << REISERFS_DATA_ORDERED); | |
1816 | } | |
1817 | ||
1818 | if (reiserfs_data_log(s)) { | |
1819 | reiserfs_info(s, "using journaled data mode\n"); | |
1820 | } else if (reiserfs_data_ordered(s)) { | |
1821 | reiserfs_info(s, "using ordered data mode\n"); | |
1822 | } else { | |
1823 | reiserfs_info(s, "using writeback data mode\n"); | |
1824 | } | |
1825 | if (reiserfs_barrier_flush(s)) { | |
1826 | printk("reiserfs: using flush barriers\n"); | |
1827 | } | |
f32485be FW |
1828 | |
1829 | /* | |
1830 | * This path assumed to be called with the BKL in the old times. | |
1831 | * Now we have inherited the big reiserfs lock from it and many | |
1832 | * reiserfs helpers called in the mount path and elsewhere require | |
1833 | * this lock to be held even if it's not always necessary. Let's be | |
1834 | * conservative and hold it early. The window can be reduced after | |
1835 | * careful review of the code. | |
1836 | */ | |
1837 | reiserfs_write_lock(s); | |
1838 | ||
bd4c625c LT |
1839 | // set_device_ro(s->s_dev, 1) ; |
1840 | if (journal_init(s, jdev_name, old_format, commit_max_age)) { | |
45b03d5e JM |
1841 | SWARN(silent, s, "sh-2022", |
1842 | "unable to initialize journal space"); | |
bd4c625c LT |
1843 | goto error; |
1844 | } else { | |
1845 | jinit_done = 1; /* once this is set, journal_release must be called | |
1846 | ** if we error out of the mount | |
1847 | */ | |
1848 | } | |
1849 | if (reread_meta_blocks(s)) { | |
45b03d5e JM |
1850 | SWARN(silent, s, "jmacd-9", |
1851 | "unable to reread meta blocks after journal init"); | |
bd4c625c LT |
1852 | goto error; |
1853 | } | |
1854 | ||
1855 | if (replay_only(s)) | |
1856 | goto error; | |
1857 | ||
1858 | if (bdev_read_only(s->s_bdev) && !(s->s_flags & MS_RDONLY)) { | |
45b03d5e JM |
1859 | SWARN(silent, s, "clm-7000", |
1860 | "Detected readonly device, marking FS readonly"); | |
bd4c625c LT |
1861 | s->s_flags |= MS_RDONLY; |
1862 | } | |
1863 | args.objectid = REISERFS_ROOT_OBJECTID; | |
1864 | args.dirid = REISERFS_ROOT_PARENT_OBJECTID; | |
1865 | root_inode = | |
1866 | iget5_locked(s, REISERFS_ROOT_OBJECTID, reiserfs_find_actor, | |
1867 | reiserfs_init_locked_inode, (void *)(&args)); | |
1868 | if (!root_inode) { | |
45b03d5e | 1869 | SWARN(silent, s, "jmacd-10", "get root inode failed"); |
bd4c625c LT |
1870 | goto error; |
1871 | } | |
1872 | ||
1873 | if (root_inode->i_state & I_NEW) { | |
1874 | reiserfs_read_locked_inode(root_inode, &args); | |
1875 | unlock_new_inode(root_inode); | |
1876 | } | |
1877 | ||
1878 | s->s_root = d_alloc_root(root_inode); | |
1879 | if (!s->s_root) { | |
1880 | iput(root_inode); | |
1881 | goto error; | |
1882 | } | |
1883 | // define and initialize hash function | |
1884 | sbi->s_hash_function = hash_function(s); | |
1885 | if (sbi->s_hash_function == NULL) { | |
1886 | dput(s->s_root); | |
1887 | s->s_root = NULL; | |
1888 | goto error; | |
1889 | } | |
1890 | ||
1891 | if (is_reiserfs_3_5(rs) | |
1892 | || (is_reiserfs_jr(rs) && SB_VERSION(s) == REISERFS_VERSION_1)) | |
1893 | set_bit(REISERFS_3_5, &(sbi->s_properties)); | |
e1fabd3c JM |
1894 | else if (old_format) |
1895 | set_bit(REISERFS_OLD_FORMAT, &(sbi->s_properties)); | |
bd4c625c LT |
1896 | else |
1897 | set_bit(REISERFS_3_6, &(sbi->s_properties)); | |
1898 | ||
1899 | if (!(s->s_flags & MS_RDONLY)) { | |
1900 | ||
1901 | errval = journal_begin(&th, s, 1); | |
1902 | if (errval) { | |
1903 | dput(s->s_root); | |
1904 | s->s_root = NULL; | |
1905 | goto error; | |
1906 | } | |
1907 | reiserfs_prepare_for_journal(s, SB_BUFFER_WITH_SB(s), 1); | |
1908 | ||
1909 | set_sb_umount_state(rs, REISERFS_ERROR_FS); | |
1910 | set_sb_fs_state(rs, 0); | |
1911 | ||
cb680c1b JM |
1912 | /* Clear out s_bmap_nr if it would wrap. We can handle this |
1913 | * case, but older revisions can't. This will cause the | |
1914 | * file system to fail mount on those older implementations, | |
1915 | * avoiding corruption. -jeffm */ | |
1916 | if (bmap_would_wrap(reiserfs_bmap_count(s)) && | |
1917 | sb_bmap_nr(rs) != 0) { | |
45b03d5e | 1918 | reiserfs_warning(s, "super-2030", "This file system " |
cb680c1b JM |
1919 | "claims to use %u bitmap blocks in " |
1920 | "its super block, but requires %u. " | |
1921 | "Clearing to zero.", sb_bmap_nr(rs), | |
1922 | reiserfs_bmap_count(s)); | |
1923 | ||
1924 | set_sb_bmap_nr(rs, 0); | |
1925 | } | |
1926 | ||
bd4c625c LT |
1927 | if (old_format_only(s)) { |
1928 | /* filesystem of format 3.5 either with standard or non-standard | |
1929 | journal */ | |
1930 | if (convert_reiserfs(s)) { | |
1931 | /* and -o conv is given */ | |
1932 | if (!silent) | |
1933 | reiserfs_info(s, | |
1934 | "converting 3.5 filesystem to the 3.6 format"); | |
1935 | ||
1936 | if (is_reiserfs_3_5(rs)) | |
1937 | /* put magic string of 3.6 format. 2.2 will not be able to | |
1938 | mount this filesystem anymore */ | |
1939 | memcpy(rs->s_v1.s_magic, | |
1940 | reiserfs_3_6_magic_string, | |
1941 | sizeof | |
1942 | (reiserfs_3_6_magic_string)); | |
1943 | ||
1944 | set_sb_version(rs, REISERFS_VERSION_2); | |
1945 | reiserfs_convert_objectid_map_v1(s); | |
1946 | set_bit(REISERFS_3_6, &(sbi->s_properties)); | |
1947 | clear_bit(REISERFS_3_5, &(sbi->s_properties)); | |
1948 | } else if (!silent) { | |
1949 | reiserfs_info(s, "using 3.5.x disk format\n"); | |
1950 | } | |
702d21c6 JM |
1951 | } else |
1952 | set_sb_mnt_count(rs, sb_mnt_count(rs) + 1); | |
1953 | ||
bd4c625c LT |
1954 | |
1955 | journal_mark_dirty(&th, s, SB_BUFFER_WITH_SB(s)); | |
1956 | errval = journal_end(&th, s, 1); | |
1957 | if (errval) { | |
1958 | dput(s->s_root); | |
1959 | s->s_root = NULL; | |
1960 | goto error; | |
1961 | } | |
1962 | ||
edcc37a0 AV |
1963 | if ((errval = reiserfs_lookup_privroot(s)) || |
1964 | (errval = reiserfs_xattr_init(s, s->s_flags))) { | |
bd4c625c LT |
1965 | dput(s->s_root); |
1966 | s->s_root = NULL; | |
1967 | goto error; | |
1968 | } | |
1969 | ||
1970 | /* look for files which were to be removed in previous session */ | |
1971 | finish_unfinished(s); | |
1972 | } else { | |
1973 | if (old_format_only(s) && !silent) { | |
1974 | reiserfs_info(s, "using 3.5.x disk format\n"); | |
1975 | } | |
1976 | ||
edcc37a0 AV |
1977 | if ((errval = reiserfs_lookup_privroot(s)) || |
1978 | (errval = reiserfs_xattr_init(s, s->s_flags))) { | |
bd4c625c LT |
1979 | dput(s->s_root); |
1980 | s->s_root = NULL; | |
1981 | goto error; | |
1982 | } | |
1983 | } | |
1984 | // mark hash in super block: it could be unset. overwrite should be ok | |
1985 | set_sb_hash_function_code(rs, function2code(sbi->s_hash_function)); | |
1986 | ||
1987 | handle_attrs(s); | |
1988 | ||
1989 | reiserfs_proc_info_init(s); | |
1990 | ||
1991 | init_waitqueue_head(&(sbi->s_wait)); | |
1992 | spin_lock_init(&sbi->bitmap_lock); | |
1993 | ||
8ebc4232 FW |
1994 | reiserfs_write_unlock(s); |
1995 | ||
bd4c625c LT |
1996 | return (0); |
1997 | ||
00b44197 | 1998 | error: |
f32485be FW |
1999 | reiserfs_write_unlock(s); |
2000 | ||
2001 | error_unlocked: | |
2002 | /* kill the commit thread, free journal ram */ | |
2003 | if (jinit_done) { | |
2004 | reiserfs_write_lock(s); | |
bd4c625c | 2005 | journal_release_error(NULL, s); |
f32485be | 2006 | reiserfs_write_unlock(s); |
bd4c625c | 2007 | } |
5065227b JM |
2008 | |
2009 | reiserfs_free_bitmap_cache(s); | |
bd4c625c LT |
2010 | if (SB_BUFFER_WITH_SB(s)) |
2011 | brelse(SB_BUFFER_WITH_SB(s)); | |
1da177e4 | 2012 | #ifdef CONFIG_QUOTA |
5065227b JM |
2013 | { |
2014 | int j; | |
00b44197 JK |
2015 | for (j = 0; j < MAXQUOTAS; j++) |
2016 | kfree(qf_names[j]); | |
bd4c625c | 2017 | } |
1da177e4 | 2018 | #endif |
833d304b | 2019 | kfree(sbi); |
1da177e4 | 2020 | |
bd4c625c LT |
2021 | s->s_fs_info = NULL; |
2022 | return errval; | |
1da177e4 LT |
2023 | } |
2024 | ||
726c3342 | 2025 | static int reiserfs_statfs(struct dentry *dentry, struct kstatfs *buf) |
1da177e4 | 2026 | { |
726c3342 | 2027 | struct reiserfs_super_block *rs = SB_DISK_SUPER_BLOCK(dentry->d_sb); |
bd4c625c LT |
2028 | |
2029 | buf->f_namelen = (REISERFS_MAX_NAME(s->s_blocksize)); | |
2030 | buf->f_bfree = sb_free_blocks(rs); | |
2031 | buf->f_bavail = buf->f_bfree; | |
2032 | buf->f_blocks = sb_block_count(rs) - sb_bmap_nr(rs) - 1; | |
726c3342 | 2033 | buf->f_bsize = dentry->d_sb->s_blocksize; |
bd4c625c LT |
2034 | /* changed to accommodate gcc folks. */ |
2035 | buf->f_type = REISERFS_SUPER_MAGIC; | |
651d0623 CL |
2036 | buf->f_fsid.val[0] = (u32)crc32_le(0, rs->s_uuid, sizeof(rs->s_uuid)/2); |
2037 | buf->f_fsid.val[1] = (u32)crc32_le(0, rs->s_uuid + sizeof(rs->s_uuid)/2, | |
2038 | sizeof(rs->s_uuid)/2); | |
2039 | ||
bd4c625c | 2040 | return 0; |
1da177e4 LT |
2041 | } |
2042 | ||
2043 | #ifdef CONFIG_QUOTA | |
1da177e4 LT |
2044 | static int reiserfs_write_dquot(struct dquot *dquot) |
2045 | { | |
bd4c625c LT |
2046 | struct reiserfs_transaction_handle th; |
2047 | int ret, err; | |
2048 | ||
2049 | reiserfs_write_lock(dquot->dq_sb); | |
2050 | ret = | |
2051 | journal_begin(&th, dquot->dq_sb, | |
2052 | REISERFS_QUOTA_TRANS_BLOCKS(dquot->dq_sb)); | |
2053 | if (ret) | |
2054 | goto out; | |
2055 | ret = dquot_commit(dquot); | |
2056 | err = | |
2057 | journal_end(&th, dquot->dq_sb, | |
2058 | REISERFS_QUOTA_TRANS_BLOCKS(dquot->dq_sb)); | |
2059 | if (!ret && err) | |
2060 | ret = err; | |
2061 | out: | |
2062 | reiserfs_write_unlock(dquot->dq_sb); | |
2063 | return ret; | |
1da177e4 LT |
2064 | } |
2065 | ||
2066 | static int reiserfs_acquire_dquot(struct dquot *dquot) | |
2067 | { | |
bd4c625c LT |
2068 | struct reiserfs_transaction_handle th; |
2069 | int ret, err; | |
2070 | ||
2071 | reiserfs_write_lock(dquot->dq_sb); | |
2072 | ret = | |
2073 | journal_begin(&th, dquot->dq_sb, | |
2074 | REISERFS_QUOTA_INIT_BLOCKS(dquot->dq_sb)); | |
2075 | if (ret) | |
2076 | goto out; | |
2077 | ret = dquot_acquire(dquot); | |
2078 | err = | |
2079 | journal_end(&th, dquot->dq_sb, | |
2080 | REISERFS_QUOTA_INIT_BLOCKS(dquot->dq_sb)); | |
2081 | if (!ret && err) | |
2082 | ret = err; | |
2083 | out: | |
2084 | reiserfs_write_unlock(dquot->dq_sb); | |
2085 | return ret; | |
1da177e4 LT |
2086 | } |
2087 | ||
2088 | static int reiserfs_release_dquot(struct dquot *dquot) | |
2089 | { | |
bd4c625c LT |
2090 | struct reiserfs_transaction_handle th; |
2091 | int ret, err; | |
2092 | ||
2093 | reiserfs_write_lock(dquot->dq_sb); | |
2094 | ret = | |
2095 | journal_begin(&th, dquot->dq_sb, | |
2096 | REISERFS_QUOTA_DEL_BLOCKS(dquot->dq_sb)); | |
9c3013e9 JK |
2097 | if (ret) { |
2098 | /* Release dquot anyway to avoid endless cycle in dqput() */ | |
2099 | dquot_release(dquot); | |
bd4c625c | 2100 | goto out; |
9c3013e9 | 2101 | } |
bd4c625c LT |
2102 | ret = dquot_release(dquot); |
2103 | err = | |
2104 | journal_end(&th, dquot->dq_sb, | |
2105 | REISERFS_QUOTA_DEL_BLOCKS(dquot->dq_sb)); | |
2106 | if (!ret && err) | |
2107 | ret = err; | |
2108 | out: | |
2109 | reiserfs_write_unlock(dquot->dq_sb); | |
2110 | return ret; | |
1da177e4 LT |
2111 | } |
2112 | ||
2113 | static int reiserfs_mark_dquot_dirty(struct dquot *dquot) | |
2114 | { | |
4506567b | 2115 | /* Are we journaling quotas? */ |
bd4c625c LT |
2116 | if (REISERFS_SB(dquot->dq_sb)->s_qf_names[USRQUOTA] || |
2117 | REISERFS_SB(dquot->dq_sb)->s_qf_names[GRPQUOTA]) { | |
2118 | dquot_mark_dquot_dirty(dquot); | |
2119 | return reiserfs_write_dquot(dquot); | |
2120 | } else | |
2121 | return dquot_mark_dquot_dirty(dquot); | |
1da177e4 LT |
2122 | } |
2123 | ||
2124 | static int reiserfs_write_info(struct super_block *sb, int type) | |
2125 | { | |
bd4c625c LT |
2126 | struct reiserfs_transaction_handle th; |
2127 | int ret, err; | |
2128 | ||
2129 | /* Data block + inode block */ | |
2130 | reiserfs_write_lock(sb); | |
2131 | ret = journal_begin(&th, sb, 2); | |
2132 | if (ret) | |
2133 | goto out; | |
2134 | ret = dquot_commit_info(sb, type); | |
2135 | err = journal_end(&th, sb, 2); | |
2136 | if (!ret && err) | |
2137 | ret = err; | |
2138 | out: | |
2139 | reiserfs_write_unlock(sb); | |
2140 | return ret; | |
1da177e4 LT |
2141 | } |
2142 | ||
2143 | /* | |
84de856e | 2144 | * Turn on quotas during mount time - we need to find the quota file and such... |
1da177e4 LT |
2145 | */ |
2146 | static int reiserfs_quota_on_mount(struct super_block *sb, int type) | |
2147 | { | |
287a8095 CH |
2148 | return dquot_quota_on_mount(sb, REISERFS_SB(sb)->s_qf_names[type], |
2149 | REISERFS_SB(sb)->s_jquota_fmt, type); | |
1da177e4 LT |
2150 | } |
2151 | ||
2152 | /* | |
2153 | * Standard function to be called on quota_on | |
2154 | */ | |
bd4c625c | 2155 | static int reiserfs_quota_on(struct super_block *sb, int type, int format_id, |
f00c9e44 | 2156 | struct path *path) |
1da177e4 | 2157 | { |
bd4c625c | 2158 | int err; |
d5dee5c3 | 2159 | struct inode *inode; |
5d4f7fdd | 2160 | struct reiserfs_transaction_handle th; |
c3aa0776 | 2161 | int opt = type == USRQUOTA ? REISERFS_USRQUOTA : REISERFS_GRPQUOTA; |
bd4c625c | 2162 | |
c3aa0776 | 2163 | if (!(REISERFS_SB(sb)->s_mount_opt & (1 << opt))) |
bd4c625c | 2164 | return -EINVAL; |
307ae18a | 2165 | |
bd4c625c | 2166 | /* Quotafile not on the same filesystem? */ |
d8c9584e | 2167 | if (path->dentry->d_sb != sb) { |
77e69dac AV |
2168 | err = -EXDEV; |
2169 | goto out; | |
bd4c625c | 2170 | } |
f00c9e44 | 2171 | inode = path->dentry->d_inode; |
bd4c625c | 2172 | /* We must not pack tails for quota files on reiserfs for quota IO to work */ |
d5dee5c3 JK |
2173 | if (!(REISERFS_I(inode)->i_flags & i_nopack_mask)) { |
2174 | err = reiserfs_unpack(inode, NULL); | |
2175 | if (err) { | |
45b03d5e JM |
2176 | reiserfs_warning(sb, "super-6520", |
2177 | "Unpacking tail of quota file failed" | |
d5dee5c3 | 2178 | " (%d). Cannot turn on quotas.", err); |
77e69dac AV |
2179 | err = -EINVAL; |
2180 | goto out; | |
d5dee5c3 JK |
2181 | } |
2182 | mark_inode_dirty(inode); | |
bd4c625c | 2183 | } |
5d4f7fdd JK |
2184 | /* Journaling quota? */ |
2185 | if (REISERFS_SB(sb)->s_qf_names[type]) { | |
2186 | /* Quotafile not of fs root? */ | |
f00c9e44 | 2187 | if (path->dentry->d_parent != sb->s_root) |
45b03d5e JM |
2188 | reiserfs_warning(sb, "super-6521", |
2189 | "Quota file not on filesystem root. " | |
bd4c625c | 2190 | "Journalled quota will not work."); |
5d4f7fdd JK |
2191 | } |
2192 | ||
2193 | /* | |
2194 | * When we journal data on quota file, we have to flush journal to see | |
2195 | * all updates to the file when we bypass pagecache... | |
2196 | */ | |
2197 | if (reiserfs_file_data_log(inode)) { | |
2198 | /* Just start temporary transaction and finish it */ | |
2199 | err = journal_begin(&th, sb, 1); | |
2200 | if (err) | |
77e69dac | 2201 | goto out; |
5d4f7fdd JK |
2202 | err = journal_end_sync(&th, sb, 1); |
2203 | if (err) | |
77e69dac | 2204 | goto out; |
5d4f7fdd | 2205 | } |
f00c9e44 | 2206 | err = dquot_quota_on(sb, type, format_id, path); |
77e69dac | 2207 | out: |
77e69dac | 2208 | return err; |
1da177e4 LT |
2209 | } |
2210 | ||
2211 | /* Read data from quotafile - avoid pagecache and such because we cannot afford | |
2212 | * acquiring the locks... As quota files are never truncated and quota code | |
25985edc | 2213 | * itself serializes the operations (and no one else should touch the files) |
1da177e4 LT |
2214 | * we don't have to be afraid of races */ |
2215 | static ssize_t reiserfs_quota_read(struct super_block *sb, int type, char *data, | |
2216 | size_t len, loff_t off) | |
2217 | { | |
bd4c625c LT |
2218 | struct inode *inode = sb_dqopt(sb)->files[type]; |
2219 | unsigned long blk = off >> sb->s_blocksize_bits; | |
2220 | int err = 0, offset = off & (sb->s_blocksize - 1), tocopy; | |
2221 | size_t toread; | |
2222 | struct buffer_head tmp_bh, *bh; | |
2223 | loff_t i_size = i_size_read(inode); | |
2224 | ||
2225 | if (off > i_size) | |
2226 | return 0; | |
2227 | if (off + len > i_size) | |
2228 | len = i_size - off; | |
2229 | toread = len; | |
2230 | while (toread > 0) { | |
2231 | tocopy = | |
2232 | sb->s_blocksize - offset < | |
2233 | toread ? sb->s_blocksize - offset : toread; | |
2234 | tmp_bh.b_state = 0; | |
2235 | /* Quota files are without tails so we can safely use this function */ | |
2236 | reiserfs_write_lock(sb); | |
2237 | err = reiserfs_get_block(inode, blk, &tmp_bh, 0); | |
2238 | reiserfs_write_unlock(sb); | |
2239 | if (err) | |
2240 | return err; | |
2241 | if (!buffer_mapped(&tmp_bh)) /* A hole? */ | |
2242 | memset(data, 0, tocopy); | |
2243 | else { | |
2244 | bh = sb_bread(sb, tmp_bh.b_blocknr); | |
2245 | if (!bh) | |
2246 | return -EIO; | |
2247 | memcpy(data, bh->b_data + offset, tocopy); | |
2248 | brelse(bh); | |
2249 | } | |
2250 | offset = 0; | |
2251 | toread -= tocopy; | |
2252 | data += tocopy; | |
2253 | blk++; | |
2254 | } | |
2255 | return len; | |
1da177e4 LT |
2256 | } |
2257 | ||
2258 | /* Write to quotafile (we know the transaction is already started and has | |
2259 | * enough credits) */ | |
2260 | static ssize_t reiserfs_quota_write(struct super_block *sb, int type, | |
2261 | const char *data, size_t len, loff_t off) | |
2262 | { | |
bd4c625c LT |
2263 | struct inode *inode = sb_dqopt(sb)->files[type]; |
2264 | unsigned long blk = off >> sb->s_blocksize_bits; | |
2265 | int err = 0, offset = off & (sb->s_blocksize - 1), tocopy; | |
2266 | int journal_quota = REISERFS_SB(sb)->s_qf_names[type] != NULL; | |
2267 | size_t towrite = len; | |
2268 | struct buffer_head tmp_bh, *bh; | |
2269 | ||
9c3013e9 JK |
2270 | if (!current->journal_info) { |
2271 | printk(KERN_WARNING "reiserfs: Quota write (off=%Lu, len=%Lu)" | |
2272 | " cancelled because transaction is not started.\n", | |
2273 | (unsigned long long)off, (unsigned long long)len); | |
2274 | return -EIO; | |
2275 | } | |
5c81a419 | 2276 | mutex_lock_nested(&inode->i_mutex, I_MUTEX_QUOTA); |
bd4c625c LT |
2277 | while (towrite > 0) { |
2278 | tocopy = sb->s_blocksize - offset < towrite ? | |
2279 | sb->s_blocksize - offset : towrite; | |
2280 | tmp_bh.b_state = 0; | |
2281 | err = reiserfs_get_block(inode, blk, &tmp_bh, GET_BLOCK_CREATE); | |
2282 | if (err) | |
2283 | goto out; | |
2284 | if (offset || tocopy != sb->s_blocksize) | |
2285 | bh = sb_bread(sb, tmp_bh.b_blocknr); | |
2286 | else | |
2287 | bh = sb_getblk(sb, tmp_bh.b_blocknr); | |
2288 | if (!bh) { | |
2289 | err = -EIO; | |
2290 | goto out; | |
2291 | } | |
2292 | lock_buffer(bh); | |
2293 | memcpy(bh->b_data + offset, data, tocopy); | |
2294 | flush_dcache_page(bh->b_page); | |
2295 | set_buffer_uptodate(bh); | |
2296 | unlock_buffer(bh); | |
2297 | reiserfs_prepare_for_journal(sb, bh, 1); | |
2298 | journal_mark_dirty(current->journal_info, sb, bh); | |
2299 | if (!journal_quota) | |
2300 | reiserfs_add_ordered_list(inode, bh); | |
2301 | brelse(bh); | |
2302 | offset = 0; | |
2303 | towrite -= tocopy; | |
2304 | data += tocopy; | |
2305 | blk++; | |
2306 | } | |
9c3013e9 | 2307 | out: |
10dd08dc JK |
2308 | if (len == towrite) { |
2309 | mutex_unlock(&inode->i_mutex); | |
bd4c625c | 2310 | return err; |
10dd08dc | 2311 | } |
bd4c625c LT |
2312 | if (inode->i_size < off + len - towrite) |
2313 | i_size_write(inode, off + len - towrite); | |
2314 | inode->i_version++; | |
2315 | inode->i_mtime = inode->i_ctime = CURRENT_TIME; | |
2316 | mark_inode_dirty(inode); | |
1b1dcc1b | 2317 | mutex_unlock(&inode->i_mutex); |
bd4c625c | 2318 | return len - towrite; |
1da177e4 LT |
2319 | } |
2320 | ||
2321 | #endif | |
2322 | ||
152a0836 | 2323 | static struct dentry *get_super_block(struct file_system_type *fs_type, |
454e2398 | 2324 | int flags, const char *dev_name, |
152a0836 | 2325 | void *data) |
1da177e4 | 2326 | { |
152a0836 | 2327 | return mount_bdev(fs_type, flags, dev_name, data, reiserfs_fill_super); |
1da177e4 LT |
2328 | } |
2329 | ||
bd4c625c | 2330 | static int __init init_reiserfs_fs(void) |
1da177e4 LT |
2331 | { |
2332 | int ret; | |
2333 | ||
bd4c625c | 2334 | if ((ret = init_inodecache())) { |
1da177e4 LT |
2335 | return ret; |
2336 | } | |
2337 | ||
bd4c625c | 2338 | reiserfs_proc_info_global_init(); |
1da177e4 | 2339 | |
bd4c625c | 2340 | ret = register_filesystem(&reiserfs_fs_type); |
1da177e4 LT |
2341 | |
2342 | if (ret == 0) { | |
2343 | return 0; | |
2344 | } | |
2345 | ||
bd4c625c LT |
2346 | reiserfs_proc_info_global_done(); |
2347 | destroy_inodecache(); | |
1da177e4 LT |
2348 | |
2349 | return ret; | |
2350 | } | |
2351 | ||
bd4c625c | 2352 | static void __exit exit_reiserfs_fs(void) |
1da177e4 | 2353 | { |
bd4c625c LT |
2354 | reiserfs_proc_info_global_done(); |
2355 | unregister_filesystem(&reiserfs_fs_type); | |
2356 | destroy_inodecache(); | |
1da177e4 LT |
2357 | } |
2358 | ||
2359 | struct file_system_type reiserfs_fs_type = { | |
bd4c625c LT |
2360 | .owner = THIS_MODULE, |
2361 | .name = "reiserfs", | |
152a0836 | 2362 | .mount = get_super_block, |
edc666e2 | 2363 | .kill_sb = reiserfs_kill_sb, |
bd4c625c | 2364 | .fs_flags = FS_REQUIRES_DEV, |
1da177e4 LT |
2365 | }; |
2366 | ||
bd4c625c LT |
2367 | MODULE_DESCRIPTION("ReiserFS journaled filesystem"); |
2368 | MODULE_AUTHOR("Hans Reiser <reiser@namesys.com>"); | |
2369 | MODULE_LICENSE("GPL"); | |
1da177e4 | 2370 | |
bd4c625c LT |
2371 | module_init(init_reiserfs_fs); |
2372 | module_exit(exit_reiserfs_fs); |