2 * Copyright 2000 by Hans Reiser, licensing governed by reiserfs/README
4 * Trivial changes by Alan Cox to add the LFS fixes
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.
14 #include <linux/config.h>
15 #include <linux/module.h>
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>
22 #include <linux/smp_lock.h>
23 #include <linux/init.h>
24 #include <linux/blkdev.h>
25 #include <linux/buffer_head.h>
26 #include <linux/vfs.h>
28 struct file_system_type reiserfs_fs_type;
30 const char reiserfs_3_5_magic_string[] = REISERFS_SUPER_MAGIC_STRING;
31 const char reiserfs_3_6_magic_string[] = REISER2FS_SUPER_MAGIC_STRING;
32 const char reiserfs_jr_magic_string[] = REISER2FS_JR_SUPER_MAGIC_STRING;
34 int is_reiserfs_3_5 (struct reiserfs_super_block * rs)
36 return !strncmp (rs->s_v1.s_magic, reiserfs_3_5_magic_string,
37 strlen (reiserfs_3_5_magic_string));
41 int is_reiserfs_3_6 (struct reiserfs_super_block * rs)
43 return !strncmp (rs->s_v1.s_magic, reiserfs_3_6_magic_string,
44 strlen (reiserfs_3_6_magic_string));
48 int is_reiserfs_jr (struct reiserfs_super_block * rs)
50 return !strncmp (rs->s_v1.s_magic, reiserfs_jr_magic_string,
51 strlen (reiserfs_jr_magic_string));
55 static int is_any_reiserfs_magic_string (struct reiserfs_super_block * rs)
57 return (is_reiserfs_3_5 (rs) || is_reiserfs_3_6 (rs) ||
61 static int reiserfs_remount (struct super_block * s, int * flags, char * data);
62 static int reiserfs_statfs (struct super_block * s, struct kstatfs * buf);
64 static void reiserfs_sync_fs (struct super_block * s)
66 if (!(s->s_flags & MS_RDONLY)) {
67 struct reiserfs_transaction_handle th;
68 reiserfs_write_lock(s);
69 journal_begin(&th, s, 1);
70 journal_end_sync(&th, s, 1);
71 reiserfs_flush_old_commits(s);
73 reiserfs_write_unlock(s);
77 static void reiserfs_write_super(struct super_block *s)
82 static void reiserfs_write_super_lockfs (struct super_block * s)
84 struct reiserfs_transaction_handle th ;
85 reiserfs_write_lock(s);
86 if (!(s->s_flags & MS_RDONLY)) {
87 journal_begin(&th, s, 1) ;
88 reiserfs_prepare_for_journal(s, SB_BUFFER_WITH_SB(s), 1);
89 journal_mark_dirty(&th, s, SB_BUFFER_WITH_SB (s));
90 reiserfs_block_writes(&th) ;
91 journal_end_sync(&th, s, 1) ;
94 reiserfs_write_unlock(s);
97 void reiserfs_unlockfs(struct super_block *s) {
98 reiserfs_allow_writes(s) ;
101 extern const struct key MAX_KEY;
104 /* this is used to delete "save link" when there are no items of a
105 file it points to. It can either happen if unlink is completed but
106 "save unlink" removal, or if file has both unlink and truncate
107 pending and as unlink completes first (because key of "save link"
108 protecting unlink is bigger that a key lf "save link" which
109 protects truncate), so there left no items to make truncate
111 static void remove_save_link_only (struct super_block * s, struct key * key, int oid_free)
113 struct reiserfs_transaction_handle th;
115 /* we are going to do one balancing */
116 journal_begin (&th, s, JOURNAL_PER_BALANCE_CNT);
118 reiserfs_delete_solid_item (&th, NULL, key);
120 /* removals are protected by direct items */
121 reiserfs_release_objectid (&th, le32_to_cpu (key->k_objectid));
123 journal_end (&th, s, JOURNAL_PER_BALANCE_CNT);
127 /* look for uncompleted unlinks and truncates and complete them */
128 static void finish_unfinished (struct super_block * s)
130 INITIALIZE_PATH (path);
131 struct cpu_key max_cpu_key, obj_key;
132 struct key save_link_key;
134 struct item_head * ih;
135 struct buffer_head * bh;
139 struct inode * inode;
143 /* compose key to look for "save" links */
144 max_cpu_key.version = KEY_FORMAT_3_5;
145 max_cpu_key.on_disk_key = MAX_KEY;
146 max_cpu_key.key_length = 3;
149 REISERFS_SB(s)->s_is_unlinked_ok = 1;
151 retval = search_item (s, &max_cpu_key, &path);
152 if (retval != ITEM_NOT_FOUND) {
153 reiserfs_warning (s, "vs-2140: finish_unfinished: search_by_key returned %d",
158 bh = get_last_bh (&path);
159 item_pos = get_item_pos (&path);
160 if (item_pos != B_NR_ITEMS (bh)) {
161 reiserfs_warning (s, "vs-2060: finish_unfinished: wrong position found");
165 ih = B_N_PITEM_HEAD (bh, item_pos);
167 if (le32_to_cpu (ih->ih_key.k_dir_id) != MAX_KEY_OBJECTID)
168 /* there are no "save" links anymore */
171 save_link_key = ih->ih_key;
172 if (is_indirect_le_ih (ih))
177 /* reiserfs_iget needs k_dirid and k_objectid only */
178 item = B_I_PITEM (bh, ih);
179 obj_key.on_disk_key.k_dir_id = le32_to_cpu (*(__u32 *)item);
180 obj_key.on_disk_key.k_objectid = le32_to_cpu (ih->ih_key.k_objectid);
181 obj_key.on_disk_key.u.k_offset_v1.k_offset = 0;
182 obj_key.on_disk_key.u.k_offset_v1.k_uniqueness = 0;
186 inode = reiserfs_iget (s, &obj_key);
188 /* the unlink almost completed, it just did not manage to remove
189 "save" link and release objectid */
190 reiserfs_warning (s, "vs-2180: finish_unfinished: iget failed for %K",
192 remove_save_link_only (s, &save_link_key, 1);
196 if (!truncate && inode->i_nlink) {
197 /* file is not unlinked */
198 reiserfs_warning (s, "vs-2185: finish_unfinished: file %K is not unlinked",
200 remove_save_link_only (s, &save_link_key, 0);
204 if (truncate && S_ISDIR (inode->i_mode) ) {
205 /* We got a truncate request for a dir which is impossible.
206 The only imaginable way is to execute unfinished truncate request
207 then boot into old kernel, remove the file and create dir with
209 reiserfs_warning(s, "green-2101: impossible truncate on a directory %k. Please report", INODE_PKEY (inode));
210 remove_save_link_only (s, &save_link_key, 0);
217 REISERFS_I(inode) -> i_flags |= i_link_saved_truncate_mask;
218 /* not completed truncate found. New size was committed together
220 reiserfs_info (s, "Truncating %k to %Ld ..",
221 INODE_PKEY (inode), inode->i_size);
222 reiserfs_truncate_file (inode, 0/*don't update modification time*/);
223 remove_save_link (inode, truncate);
225 REISERFS_I(inode) -> i_flags |= i_link_saved_unlink_mask;
226 /* not completed unlink (rmdir) found */
227 reiserfs_info (s, "Removing %k..", INODE_PKEY (inode));
228 /* removal gets completed in iput */
235 REISERFS_SB(s)->s_is_unlinked_ok = 0;
239 reiserfs_info (s, "There were %d uncompleted unlinks/truncates. "
240 "Completed\n", done);
243 /* to protect file being unlinked from getting lost we "safe" link files
244 being unlinked. This link will be deleted in the same transaction with last
245 item of file. mounting the filesytem we scan all these links and remove
246 files which almost got lost */
247 void add_save_link (struct reiserfs_transaction_handle * th,
248 struct inode * inode, int truncate)
250 INITIALIZE_PATH (path);
256 /* file can only get one "save link" of each kind */
258 ( REISERFS_I(inode) -> i_flags & i_link_saved_truncate_mask ),
259 "saved link already exists for truncated inode %lx",
260 ( long ) inode -> i_ino );
262 ( REISERFS_I(inode) -> i_flags & i_link_saved_unlink_mask ),
263 "saved link already exists for unlinked inode %lx",
264 ( long ) inode -> i_ino );
266 /* setup key of "save" link */
267 key.version = KEY_FORMAT_3_5;
268 key.on_disk_key.k_dir_id = MAX_KEY_OBJECTID;
269 key.on_disk_key.k_objectid = inode->i_ino;
271 /* unlink, rmdir, rename */
272 set_cpu_key_k_offset (&key, 1 + inode->i_sb->s_blocksize);
273 set_cpu_key_k_type (&key, TYPE_DIRECT);
275 /* item head of "safe" link */
276 make_le_item_head (&ih, &key, key.version, 1 + inode->i_sb->s_blocksize, TYPE_DIRECT,
277 4/*length*/, 0xffff/*free space*/);
280 if (S_ISDIR (inode->i_mode))
281 reiserfs_warning(inode->i_sb, "green-2102: Adding a truncate savelink for a directory %k! Please report", INODE_PKEY(inode));
282 set_cpu_key_k_offset (&key, 1);
283 set_cpu_key_k_type (&key, TYPE_INDIRECT);
285 /* item head of "safe" link */
286 make_le_item_head (&ih, &key, key.version, 1, TYPE_INDIRECT,
287 4/*length*/, 0/*free space*/);
291 /* look for its place in the tree */
292 retval = search_item (inode->i_sb, &key, &path);
293 if (retval != ITEM_NOT_FOUND) {
294 if ( retval != -ENOSPC )
295 reiserfs_warning (inode->i_sb, "vs-2100: add_save_link:"
296 "search_by_key (%K) returned %d", &key, retval);
301 /* body of "save" link */
302 link = INODE_PKEY (inode)->k_dir_id;
304 /* put "save" link inot tree, don't charge quota to anyone */
305 retval = reiserfs_insert_item (th, &path, &key, &ih, NULL, (char *)&link);
307 if (retval != -ENOSPC)
308 reiserfs_warning (inode->i_sb, "vs-2120: add_save_link: insert_item returned %d",
312 REISERFS_I(inode) -> i_flags |= i_link_saved_truncate_mask;
314 REISERFS_I(inode) -> i_flags |= i_link_saved_unlink_mask;
319 /* this opens transaction unlike add_save_link */
320 void remove_save_link (struct inode * inode, int truncate)
322 struct reiserfs_transaction_handle th;
326 /* we are going to do one balancing only */
327 journal_begin (&th, inode->i_sb, JOURNAL_PER_BALANCE_CNT);
329 /* setup key of "save" link */
330 key.k_dir_id = cpu_to_le32 (MAX_KEY_OBJECTID);
331 key.k_objectid = INODE_PKEY (inode)->k_objectid;
333 /* unlink, rmdir, rename */
334 set_le_key_k_offset (KEY_FORMAT_3_5, &key,
335 1 + inode->i_sb->s_blocksize);
336 set_le_key_k_type (KEY_FORMAT_3_5, &key, TYPE_DIRECT);
339 set_le_key_k_offset (KEY_FORMAT_3_5, &key, 1);
340 set_le_key_k_type (KEY_FORMAT_3_5, &key, TYPE_INDIRECT);
344 ( REISERFS_I(inode) -> i_flags & i_link_saved_truncate_mask ) ) ||
346 ( REISERFS_I(inode) -> i_flags & i_link_saved_unlink_mask ) ) )
347 /* don't take quota bytes from anywhere */
348 reiserfs_delete_solid_item (&th, NULL, &key);
350 reiserfs_release_objectid (&th, inode->i_ino);
351 REISERFS_I(inode) -> i_flags &= ~i_link_saved_unlink_mask;
353 REISERFS_I(inode) -> i_flags &= ~i_link_saved_truncate_mask;
355 journal_end (&th, inode->i_sb, JOURNAL_PER_BALANCE_CNT);
359 static void reiserfs_put_super (struct super_block * s)
362 struct reiserfs_transaction_handle th ;
364 if (REISERFS_SB(s)->xattr_root) {
365 d_invalidate (REISERFS_SB(s)->xattr_root);
366 dput (REISERFS_SB(s)->xattr_root);
369 if (REISERFS_SB(s)->priv_root) {
370 d_invalidate (REISERFS_SB(s)->priv_root);
371 dput (REISERFS_SB(s)->priv_root);
374 /* change file system state to current state if it was mounted with read-write permissions */
375 if (!(s->s_flags & MS_RDONLY)) {
376 journal_begin(&th, s, 10) ;
377 reiserfs_prepare_for_journal(s, SB_BUFFER_WITH_SB(s), 1) ;
378 set_sb_umount_state( SB_DISK_SUPER_BLOCK(s), REISERFS_SB(s)->s_mount_state );
379 journal_mark_dirty(&th, s, SB_BUFFER_WITH_SB (s));
382 /* note, journal_release checks for readonly mount, and can decide not
383 ** to do a journal_end
385 journal_release(&th, s) ;
387 for (i = 0; i < SB_BMAP_NR (s); i ++)
388 brelse (SB_AP_BITMAP (s)[i].bh);
390 vfree (SB_AP_BITMAP (s));
392 brelse (SB_BUFFER_WITH_SB (s));
394 print_statistics (s);
396 if (REISERFS_SB(s)->s_kmallocs != 0) {
397 reiserfs_warning (s, "vs-2004: reiserfs_put_super: allocated memory left %d",
398 REISERFS_SB(s)->s_kmallocs);
401 if (REISERFS_SB(s)->reserved_blocks != 0) {
402 reiserfs_warning (s, "green-2005: reiserfs_put_super: reserved blocks left %d",
403 REISERFS_SB(s)->reserved_blocks);
406 reiserfs_proc_info_done( s );
414 static kmem_cache_t * reiserfs_inode_cachep;
416 static struct inode *reiserfs_alloc_inode(struct super_block *sb)
418 struct reiserfs_inode_info *ei;
419 ei = (struct reiserfs_inode_info *)kmem_cache_alloc(reiserfs_inode_cachep, SLAB_KERNEL);
422 return &ei->vfs_inode;
425 static void reiserfs_destroy_inode(struct inode *inode)
427 kmem_cache_free(reiserfs_inode_cachep, REISERFS_I(inode));
430 static void init_once(void * foo, kmem_cache_t * cachep, unsigned long flags)
432 struct reiserfs_inode_info *ei = (struct reiserfs_inode_info *) foo;
434 if ((flags & (SLAB_CTOR_VERIFY|SLAB_CTOR_CONSTRUCTOR)) ==
435 SLAB_CTOR_CONSTRUCTOR) {
436 INIT_LIST_HEAD(&ei->i_prealloc_list) ;
437 inode_init_once(&ei->vfs_inode);
438 ei->i_acl_access = NULL;
439 ei->i_acl_default = NULL;
443 static int init_inodecache(void)
445 reiserfs_inode_cachep = kmem_cache_create("reiser_inode_cache",
446 sizeof(struct reiserfs_inode_info),
447 0, SLAB_HWCACHE_ALIGN|SLAB_RECLAIM_ACCOUNT,
449 if (reiserfs_inode_cachep == NULL)
454 static void destroy_inodecache(void)
456 if (kmem_cache_destroy(reiserfs_inode_cachep))
457 reiserfs_warning (NULL, "reiserfs_inode_cache: not all structures were freed");
460 /* we don't mark inodes dirty, we just log them */
461 static void reiserfs_dirty_inode (struct inode * inode) {
462 struct reiserfs_transaction_handle th ;
464 if (inode->i_sb->s_flags & MS_RDONLY) {
465 reiserfs_warning(inode->i_sb, "clm-6006: writing inode %lu on readonly FS",
469 reiserfs_write_lock(inode->i_sb);
471 /* this is really only used for atime updates, so they don't have
472 ** to be included in O_SYNC or fsync
474 journal_begin(&th, inode->i_sb, 1) ;
475 reiserfs_update_sd (&th, inode);
476 journal_end(&th, inode->i_sb, 1) ;
477 reiserfs_write_unlock(inode->i_sb);
480 static void reiserfs_clear_inode (struct inode *inode)
482 struct posix_acl *acl;
484 acl = REISERFS_I(inode)->i_acl_access;
485 if (acl && !IS_ERR (acl))
486 posix_acl_release (acl);
487 REISERFS_I(inode)->i_acl_access = NULL;
489 acl = REISERFS_I(inode)->i_acl_default;
490 if (acl && !IS_ERR (acl))
491 posix_acl_release (acl);
492 REISERFS_I(inode)->i_acl_default = NULL;
495 struct super_operations reiserfs_sops =
497 .alloc_inode = reiserfs_alloc_inode,
498 .destroy_inode = reiserfs_destroy_inode,
499 .write_inode = reiserfs_write_inode,
500 .dirty_inode = reiserfs_dirty_inode,
501 .delete_inode = reiserfs_delete_inode,
502 .clear_inode = reiserfs_clear_inode,
503 .put_super = reiserfs_put_super,
504 .write_super = reiserfs_write_super,
505 .write_super_lockfs = reiserfs_write_super_lockfs,
506 .unlockfs = reiserfs_unlockfs,
507 .statfs = reiserfs_statfs,
508 .remount_fs = reiserfs_remount,
512 static struct export_operations reiserfs_export_ops = {
513 .encode_fh = reiserfs_encode_fh,
514 .decode_fh = reiserfs_decode_fh,
515 .get_parent = reiserfs_get_parent,
516 .get_dentry = reiserfs_get_dentry,
519 /* this struct is used in reiserfs_getopt () for containing the value for those
520 mount options that have values rather than being toggles. */
523 int setmask; /* bitmask which is to set on mount_options bitmask when this
524 value is found, 0 is no bits are to be changed. */
525 int clrmask; /* bitmask which is to clear on mount_options bitmask when this
526 value is found, 0 is no bits are to be changed. This is
527 applied BEFORE setmask */
531 /* this struct is used in reiserfs_getopt() for describing the set of reiserfs
535 int arg_required; /* 0 if argument is not required, not 0 otherwise */
536 const arg_desc_t * values; /* list of values accepted by an option */
537 int setmask; /* bitmask which is to set on mount_options bitmask when this
538 value is found, 0 is no bits are to be changed. */
539 int clrmask; /* bitmask which is to clear on mount_options bitmask when this
540 value is found, 0 is no bits are to be changed. This is
541 applied BEFORE setmask */
544 /* possible values for -o data= */
545 static const arg_desc_t logging_mode[] = {
546 {"ordered", 1<<REISERFS_DATA_ORDERED, (1<<REISERFS_DATA_LOG|1<<REISERFS_DATA_WRITEBACK)},
547 {"journal", 1<<REISERFS_DATA_LOG, (1<<REISERFS_DATA_ORDERED|1<<REISERFS_DATA_WRITEBACK)},
548 {"writeback", 1<<REISERFS_DATA_WRITEBACK, (1<<REISERFS_DATA_ORDERED|1<<REISERFS_DATA_LOG)},
552 /* possible values for "-o block-allocator=" and bits which are to be set in
553 s_mount_opt of reiserfs specific part of in-core super block */
554 static const arg_desc_t balloc[] = {
555 {"noborder", 1<<REISERFS_NO_BORDER, 0},
556 {"border", 0, 1<<REISERFS_NO_BORDER},
557 {"no_unhashed_relocation", 1<<REISERFS_NO_UNHASHED_RELOCATION, 0},
558 {"hashed_relocation", 1<<REISERFS_HASHED_RELOCATION, 0},
559 {"test4", 1<<REISERFS_TEST4, 0},
560 {"notest4", 0, 1<<REISERFS_TEST4},
564 static const arg_desc_t tails[] = {
565 {"on", 1<<REISERFS_LARGETAIL, 1<<REISERFS_SMALLTAIL},
566 {"off", 0, (1<<REISERFS_LARGETAIL)|(1<<REISERFS_SMALLTAIL)},
567 {"small", 1<<REISERFS_SMALLTAIL, 1<<REISERFS_LARGETAIL},
571 int reiserfs_default_io_size = 128 * 1024; /* Default recommended I/O size is 128k.
572 There might be broken applications that are
573 confused by this. Use nolargeio mount option
574 to get usual i/o size = PAGE_SIZE.
577 /* proceed only one option from a list *cur - string containing of mount options
578 opts - array of options which are accepted
579 opt_arg - if option is found and requires an argument and if it is specifed
580 in the input - pointer to the argument is stored here
581 bit_flags - if option requires to set a certain bit - it is set here
582 return -1 if unknown option is found, opt->arg_required otherwise */
583 static int reiserfs_getopt ( struct super_block * s, char ** cur, opt_desc_t * opts, char ** opt_arg,
584 unsigned long * bit_flags)
593 const opt_desc_t * opt;
594 const arg_desc_t * arg;
599 /* assume argument cannot contain commas */
600 *cur = strchr (p, ',');
606 if ( !strncmp (p, "alloc=", 6) ) {
607 /* Ugly special case, probably we should redo options parser so that
608 it can understand several arguments for some options, also so that
609 it can fill several bitfields with option values. */
610 if ( reiserfs_parse_alloc_options( s, p + 6) ) {
618 /* for every option in the list */
619 for (opt = opts; opt->option_name; opt ++) {
620 if (!strncmp (p, opt->option_name, strlen (opt->option_name))) {
622 *bit_flags &= ~opt->clrmask;
623 *bit_flags |= opt->setmask;
628 if (!opt->option_name) {
629 reiserfs_warning (s, "unknown mount option \"%s\"", p);
633 p += strlen (opt->option_name);
636 if (!opt->arg_required) {
637 reiserfs_warning (s, "the option \"%s\" does not require an argument",
644 if (opt->arg_required) {
645 reiserfs_warning (s, "the option \"%s\" requires an argument", opt->option_name);
650 reiserfs_warning (s, "head of option \"%s\" is only correct", opt->option_name);
654 /* move to the argument, or to next option if argument is not required */
657 if ( opt->arg_required && !strlen (p) ) {
658 /* this catches "option=," */
659 reiserfs_warning (s, "empty argument for \"%s\"", opt->option_name);
664 /* *=NULLopt_arg contains pointer to argument */
666 return opt->arg_required;
669 /* values possible for this option are listed in opt->values */
670 for (arg = opt->values; arg->value; arg ++) {
671 if (!strcmp (p, arg->value)) {
673 *bit_flags &= ~arg->clrmask;
674 *bit_flags |= arg->setmask;
676 return opt->arg_required;
680 reiserfs_warning (s, "bad value \"%s\" for option \"%s\"", p, opt->option_name);
684 /* returns 0 if something is wrong in option string, 1 - otherwise */
685 static int reiserfs_parse_options (struct super_block * s, char * options, /* string given via mount's -o */
686 unsigned long * mount_options,
687 /* after the parsing phase, contains the
688 collection of bitflags defining what
689 mount options were selected. */
690 unsigned long * blocks, /* strtol-ed from NNN of resize=NNN */
692 unsigned int * commit_max_age)
697 opt_desc_t opts[] = {
698 {"tails", 't', tails, 0, 0}, /* Compatibility stuff, so that -o notail for old setups still work */
699 {"notail", 0, 0, 0, (1<<REISERFS_LARGETAIL)|(1<<REISERFS_SMALLTAIL)},
700 {"conv", 0, 0, 1<<REISERFS_CONVERT, 0},
701 {"attrs", 0, 0, 1<<REISERFS_ATTRS, 0},
702 {"noattrs", 0, 0, 0, 1<<REISERFS_ATTRS},
703 {"user_xattr", 0, 0, 1<<REISERFS_XATTRS_USER, 0},
704 {"nouser_xattr", 0, 0, 0, 1<<REISERFS_XATTRS_USER},
705 #ifdef CONFIG_REISERFS_FS_POSIX_ACL
706 {"acl", 0, 0, 1<<REISERFS_POSIXACL, 0},
707 {"noacl", 0, 0, 0, 1<<REISERFS_POSIXACL},
709 {"nolog", 0, 0, 0, 0}, /* This is unsupported */
710 {"replayonly", 0, 0, 1<<REPLAYONLY, 0},
711 {"block-allocator", 'a', balloc, 0, 0},
712 {"data", 'd', logging_mode, 0, 0},
713 {"resize", 'r', 0, 0, 0},
714 {"jdev", 'j', 0, 0, 0},
715 {"nolargeio", 'w', 0, 0, 0},
716 {"commit", 'c', 0, 0, 0},
717 {"usrquota", 0, 0, 0, 0},
718 {"grpquota", 0, 0, 0, 0},
723 if (!options || !*options)
724 /* use default configuration: create tails, journaling on, no
725 conversion to newest format */
728 for (pos = options; pos; ) {
729 c = reiserfs_getopt (s, &pos, opts, &arg, mount_options);
731 /* wrong option is given */
739 *blocks = simple_strtoul (arg, &p, 0);
741 /* NNN does not look like a number */
742 reiserfs_warning (s, "reiserfs_parse_options: bad value %s", arg);
749 unsigned long val = simple_strtoul (arg, &p, 0);
750 /* commit=NNN (time in seconds) */
751 if ( *p != '\0' || val >= (unsigned int)-1) {
752 reiserfs_warning (s, "reiserfs_parse_options: bad value %s", arg); return 0;
754 *commit_max_age = (unsigned int)val;
759 int val = simple_strtoul (arg, &p, 0);
762 reiserfs_warning (s, "reiserfs_parse_options: non-numeric value %s for nolargeio option", arg);
766 reiserfs_default_io_size = PAGE_SIZE;
768 reiserfs_default_io_size = 128 * 1024;
772 if (arg && *arg && jdev_name) {
773 if ( *jdev_name ) { //Hm, already assigned?
774 reiserfs_warning (s, "reiserfs_parse_options: journal device was already specified to be %s", *jdev_name);
785 static void switch_data_mode(struct super_block *s, unsigned long mode) {
786 REISERFS_SB(s)->s_mount_opt &= ~((1 << REISERFS_DATA_LOG) |
787 (1 << REISERFS_DATA_ORDERED) |
788 (1 << REISERFS_DATA_WRITEBACK));
789 REISERFS_SB(s)->s_mount_opt |= (1 << mode);
792 static void handle_data_mode(struct super_block *s, unsigned long mount_options)
794 if (mount_options & (1 << REISERFS_DATA_LOG)) {
795 if (!reiserfs_data_log(s)) {
796 switch_data_mode(s, REISERFS_DATA_LOG);
797 reiserfs_info (s, "switching to journaled data mode\n");
799 } else if (mount_options & (1 << REISERFS_DATA_ORDERED)) {
800 if (!reiserfs_data_ordered(s)) {
801 switch_data_mode(s, REISERFS_DATA_ORDERED);
802 reiserfs_info (s, "switching to ordered data mode\n");
804 } else if (mount_options & (1 << REISERFS_DATA_WRITEBACK)) {
805 if (!reiserfs_data_writeback(s)) {
806 switch_data_mode(s, REISERFS_DATA_WRITEBACK);
807 reiserfs_info (s, "switching to writeback data mode\n");
812 static void handle_attrs( struct super_block *s )
814 struct reiserfs_super_block * rs;
816 if( reiserfs_attrs( s ) ) {
817 rs = SB_DISK_SUPER_BLOCK (s);
818 if( old_format_only(s) ) {
819 reiserfs_warning(s, "reiserfs: cannot support attributes on 3.5.x disk format" );
820 REISERFS_SB(s) -> s_mount_opt &= ~ ( 1 << REISERFS_ATTRS );
823 if( !( le32_to_cpu( rs -> s_flags ) & reiserfs_attrs_cleared ) ) {
824 reiserfs_warning(s, "reiserfs: cannot support attributes until flag is set in super-block" );
825 REISERFS_SB(s) -> s_mount_opt &= ~ ( 1 << REISERFS_ATTRS );
830 static int reiserfs_remount (struct super_block * s, int * mount_flags, char * arg)
832 struct reiserfs_super_block * rs;
833 struct reiserfs_transaction_handle th ;
834 unsigned long blocks;
835 unsigned long mount_options = REISERFS_SB(s)->s_mount_opt;
836 unsigned long safe_mask = 0;
837 unsigned int commit_max_age = (unsigned int)-1;
839 rs = SB_DISK_SUPER_BLOCK (s);
841 if (!reiserfs_parse_options(s, arg, &mount_options, &blocks, NULL, &commit_max_age))
846 /* Add options that are safe here */
847 safe_mask |= 1 << REISERFS_SMALLTAIL;
848 safe_mask |= 1 << REISERFS_LARGETAIL;
849 safe_mask |= 1 << REISERFS_NO_BORDER;
850 safe_mask |= 1 << REISERFS_NO_UNHASHED_RELOCATION;
851 safe_mask |= 1 << REISERFS_HASHED_RELOCATION;
852 safe_mask |= 1 << REISERFS_TEST4;
853 safe_mask |= 1 << REISERFS_ATTRS;
854 safe_mask |= 1 << REISERFS_XATTRS_USER;
855 safe_mask |= 1 << REISERFS_POSIXACL;
857 /* Update the bitmask, taking care to keep
858 * the bits we're not allowed to change here */
859 REISERFS_SB(s)->s_mount_opt = (REISERFS_SB(s)->s_mount_opt & ~safe_mask) | (mount_options & safe_mask);
861 if(commit_max_age != 0 && commit_max_age != (unsigned int)-1) {
862 SB_JOURNAL_MAX_COMMIT_AGE(s) = commit_max_age;
863 SB_JOURNAL_MAX_TRANS_AGE(s) = commit_max_age;
865 else if(commit_max_age == 0)
867 /* 0 means restore defaults. */
868 SB_JOURNAL_MAX_COMMIT_AGE(s) = SB_JOURNAL_DEFAULT_MAX_COMMIT_AGE(s);
869 SB_JOURNAL_MAX_TRANS_AGE(s) = JOURNAL_MAX_TRANS_AGE;
873 int rc = reiserfs_resize(s, blocks);
878 if (*mount_flags & MS_RDONLY) {
879 reiserfs_xattr_init (s, *mount_flags);
880 /* remount read-only */
881 if (s->s_flags & MS_RDONLY)
882 /* it is read-only already */
884 /* try to remount file system with read-only permissions */
885 if (sb_umount_state(rs) == REISERFS_VALID_FS || REISERFS_SB(s)->s_mount_state != REISERFS_VALID_FS) {
889 journal_begin(&th, s, 10) ;
890 /* Mounting a rw partition read-only. */
891 reiserfs_prepare_for_journal(s, SB_BUFFER_WITH_SB(s), 1) ;
892 set_sb_umount_state( rs, REISERFS_SB(s)->s_mount_state );
893 journal_mark_dirty(&th, s, SB_BUFFER_WITH_SB (s));
895 /* remount read-write */
896 if (!(s->s_flags & MS_RDONLY)) {
897 reiserfs_xattr_init (s, *mount_flags);
898 return 0; /* We are read-write already */
901 handle_data_mode(s, mount_options);
902 REISERFS_SB(s)->s_mount_state = sb_umount_state(rs) ;
903 s->s_flags &= ~MS_RDONLY ; /* now it is safe to call journal_begin */
904 journal_begin(&th, s, 10) ;
906 /* Mount a partition which is read-only, read-write */
907 reiserfs_prepare_for_journal(s, SB_BUFFER_WITH_SB(s), 1) ;
908 REISERFS_SB(s)->s_mount_state = sb_umount_state(rs);
909 s->s_flags &= ~MS_RDONLY;
910 set_sb_umount_state( rs, REISERFS_ERROR_FS );
911 /* mark_buffer_dirty (SB_BUFFER_WITH_SB (s), 1); */
912 journal_mark_dirty(&th, s, SB_BUFFER_WITH_SB (s));
913 REISERFS_SB(s)->s_mount_state = REISERFS_VALID_FS ;
915 /* this will force a full flush of all journal lists */
916 SB_JOURNAL(s)->j_must_wait = 1 ;
917 journal_end(&th, s, 10) ;
920 if (!( *mount_flags & MS_RDONLY ) ) {
921 finish_unfinished( s );
922 reiserfs_xattr_init (s, *mount_flags);
928 /* load_bitmap_info_data - Sets up the reiserfs_bitmap_info structure from disk.
929 * @sb - superblock for this filesystem
930 * @bi - the bitmap info to be loaded. Requires that bi->bh is valid.
932 * This routine counts how many free bits there are, finding the first zero
933 * as a side effect. Could also be implemented as a loop of test_bit() calls, or
934 * a loop of find_first_zero_bit() calls. This implementation is similar to
935 * find_first_zero_bit(), but doesn't return after it finds the first bit.
936 * Should only be called on fs mount, but should be fairly efficient anyways.
938 * bi->first_zero_hint is considered unset if it == 0, since the bitmap itself
939 * will * invariably occupt block 0 represented in the bitmap. The only
940 * exception to this is when free_count also == 0, since there will be no
941 * free blocks at all.
944 static void load_bitmap_info_data (struct super_block *sb,
945 struct reiserfs_bitmap_info *bi)
947 unsigned long *cur = (unsigned long *)bi->bh->b_data;
949 while ((char *)cur < (bi->bh->b_data + sb->s_blocksize)) {
951 /* No need to scan if all 0's or all 1's.
952 * Since we're only counting 0's, we can simply ignore all 1's */
954 if (bi->first_zero_hint == 0) {
955 bi->first_zero_hint = ((char *)cur - bi->bh->b_data) << 3;
957 bi->free_count += sizeof(unsigned long)*8;
958 } else if (*cur != ~0L) {
960 for (b = 0; b < sizeof(unsigned long)*8; b++) {
961 if (!reiserfs_test_le_bit (b, cur)) {
963 if (bi->first_zero_hint == 0)
964 bi->first_zero_hint =
965 (((char *)cur - bi->bh->b_data) << 3) + b;
972 #ifdef CONFIG_REISERFS_CHECK
973 // This outputs a lot of unneded info on big FSes
974 // reiserfs_warning ("bitmap loaded from block %d: %d free blocks",
975 // bi->bh->b_blocknr, bi->free_count);
979 static int read_bitmaps (struct super_block * s)
983 SB_AP_BITMAP (s) = vmalloc (sizeof (struct reiserfs_bitmap_info) * SB_BMAP_NR(s));
984 if (SB_AP_BITMAP (s) == 0)
986 memset (SB_AP_BITMAP (s), 0, sizeof (struct reiserfs_bitmap_info) * SB_BMAP_NR(s));
987 for (i = 0, bmap_nr = REISERFS_DISK_OFFSET_IN_BYTES / s->s_blocksize + 1;
988 i < SB_BMAP_NR(s); i++, bmap_nr = s->s_blocksize * 8 * i) {
989 SB_AP_BITMAP (s)[i].bh = sb_getblk(s, bmap_nr);
990 if (!buffer_uptodate(SB_AP_BITMAP(s)[i].bh))
991 ll_rw_block(READ, 1, &SB_AP_BITMAP(s)[i].bh);
993 for (i = 0; i < SB_BMAP_NR(s); i++) {
994 wait_on_buffer(SB_AP_BITMAP (s)[i].bh);
995 if (!buffer_uptodate(SB_AP_BITMAP(s)[i].bh)) {
996 reiserfs_warning(s,"sh-2029: reiserfs read_bitmaps: "
997 "bitmap block (#%lu) reading failed",
998 SB_AP_BITMAP(s)[i].bh->b_blocknr);
999 for (i = 0; i < SB_BMAP_NR(s); i++)
1000 brelse(SB_AP_BITMAP(s)[i].bh);
1001 vfree(SB_AP_BITMAP(s));
1002 SB_AP_BITMAP(s) = NULL;
1005 load_bitmap_info_data (s, SB_AP_BITMAP (s) + i);
1010 static int read_old_bitmaps (struct super_block * s)
1013 struct reiserfs_super_block * rs = SB_DISK_SUPER_BLOCK(s);
1014 int bmp1 = (REISERFS_OLD_DISK_OFFSET_IN_BYTES / s->s_blocksize) + 1; /* first of bitmap blocks */
1016 /* read true bitmap */
1017 SB_AP_BITMAP (s) = vmalloc (sizeof (struct reiserfs_buffer_info *) * sb_bmap_nr(rs));
1018 if (SB_AP_BITMAP (s) == 0)
1021 memset (SB_AP_BITMAP (s), 0, sizeof (struct reiserfs_buffer_info *) * sb_bmap_nr(rs));
1023 for (i = 0; i < sb_bmap_nr(rs); i ++) {
1024 SB_AP_BITMAP (s)[i].bh = sb_bread (s, bmp1 + i);
1025 if (!SB_AP_BITMAP (s)[i].bh)
1027 load_bitmap_info_data (s, SB_AP_BITMAP (s) + i);
1033 void check_bitmap (struct super_block * s)
1039 while (i < SB_BLOCK_COUNT (s)) {
1040 buf = SB_AP_BITMAP (s)[i / (s->s_blocksize * 8)].bh->b_data;
1041 if (!reiserfs_test_le_bit (i % (s->s_blocksize * 8), buf))
1046 if (free != SB_FREE_BLOCKS (s))
1047 reiserfs_warning (s,"vs-4000: check_bitmap: %d free blocks, must be %d",
1048 free, SB_FREE_BLOCKS (s));
1051 static int read_super_block (struct super_block * s, int offset)
1053 struct buffer_head * bh;
1054 struct reiserfs_super_block * rs;
1058 bh = sb_bread (s, offset / s->s_blocksize);
1060 reiserfs_warning (s, "sh-2006: read_super_block: "
1061 "bread failed (dev %s, block %lu, size %lu)",
1062 reiserfs_bdevname (s), offset / s->s_blocksize, s->s_blocksize);
1066 rs = (struct reiserfs_super_block *)bh->b_data;
1067 if (!is_any_reiserfs_magic_string (rs)) {
1073 // ok, reiserfs signature (old or new) found in at the given offset
1075 fs_blocksize = sb_blocksize(rs);
1077 sb_set_blocksize (s, fs_blocksize);
1079 bh = sb_bread (s, offset / s->s_blocksize);
1081 reiserfs_warning (s, "sh-2007: read_super_block: "
1082 "bread failed (dev %s, block %lu, size %lu)\n",
1083 reiserfs_bdevname (s), offset / s->s_blocksize, s->s_blocksize);
1087 rs = (struct reiserfs_super_block *)bh->b_data;
1088 if (sb_blocksize(rs) != s->s_blocksize) {
1089 reiserfs_warning (s, "sh-2011: read_super_block: "
1090 "can't find a reiserfs filesystem on (dev %s, block %Lu, size %lu)\n",
1091 reiserfs_bdevname (s), (unsigned long long)bh->b_blocknr, s->s_blocksize);
1096 if ( rs->s_v1.s_root_block == -1 ) {
1098 reiserfs_warning (s, "Unfinished reiserfsck --rebuild-tree run detected. Please run\n"
1099 "reiserfsck --rebuild-tree and wait for a completion. If that fails\n"
1100 "get newer reiserfsprogs package");
1104 SB_BUFFER_WITH_SB (s) = bh;
1105 SB_DISK_SUPER_BLOCK (s) = rs;
1107 if (is_reiserfs_jr (rs)) {
1108 /* magic is of non-standard journal filesystem, look at s_version to
1109 find which format is in use */
1110 if (sb_version(rs) == REISERFS_VERSION_2)
1111 reiserfs_warning (s, "read_super_block: found reiserfs format \"3.6\""
1112 " with non-standard journal");
1113 else if (sb_version(rs) == REISERFS_VERSION_1)
1114 reiserfs_warning (s, "read_super_block: found reiserfs format \"3.5\""
1115 " with non-standard journal");
1117 reiserfs_warning (s, "sh-2012: read_super_block: found unknown "
1118 "format \"%u\" of reiserfs with non-standard magic",
1124 /* s_version of standard format may contain incorrect information,
1125 so we just look at the magic string */
1126 reiserfs_info (s, "found reiserfs format \"%s\" with standard journal\n",
1127 is_reiserfs_3_5 (rs) ? "3.5" : "3.6");
1129 s->s_op = &reiserfs_sops;
1130 s->s_export_op = &reiserfs_export_ops;
1132 /* new format is limited by the 32 bit wide i_blocks field, want to
1133 ** be one full block below that.
1135 s->s_maxbytes = (512LL << 32) - s->s_blocksize ;
1141 /* after journal replay, reread all bitmap and super blocks */
1142 static int reread_meta_blocks(struct super_block *s) {
1144 ll_rw_block(READ, 1, &(SB_BUFFER_WITH_SB(s))) ;
1145 wait_on_buffer(SB_BUFFER_WITH_SB(s)) ;
1146 if (!buffer_uptodate(SB_BUFFER_WITH_SB(s))) {
1147 reiserfs_warning (s, "reread_meta_blocks, error reading the super") ;
1151 for (i = 0; i < SB_BMAP_NR(s) ; i++) {
1152 ll_rw_block(READ, 1, &(SB_AP_BITMAP(s)[i].bh)) ;
1153 wait_on_buffer(SB_AP_BITMAP(s)[i].bh) ;
1154 if (!buffer_uptodate(SB_AP_BITMAP(s)[i].bh)) {
1155 reiserfs_warning (s, "reread_meta_blocks, error reading bitmap block number %d at %llu",
1156 i, (unsigned long long)SB_AP_BITMAP(s)[i].bh->b_blocknr) ;
1165 /////////////////////////////////////////////////////
1166 // hash detection stuff
1169 // if root directory is empty - we set default - Yura's - hash and
1171 // FIXME: we look for only one name in a directory. If tea and yura
1172 // bith have the same value - we ask user to send report to the
1174 __u32 find_hash_out (struct super_block * s)
1177 struct inode * inode;
1179 INITIALIZE_PATH (path);
1180 struct reiserfs_dir_entry de;
1181 __u32 hash = DEFAULT_HASH;
1183 inode = s->s_root->d_inode;
1185 do { // Some serious "goto"-hater was there ;)
1186 u32 teahash, r5hash, yurahash;
1188 make_cpu_key (&key, inode, ~0, TYPE_DIRENTRY, 3);
1189 retval = search_by_entry_key (s, &key, &path, &de);
1190 if (retval == IO_ERROR) {
1194 if (retval == NAME_NOT_FOUND)
1196 set_de_name_and_namelen (&de);
1197 if (deh_offset( &(de.de_deh[de.de_entry_num]) ) == DOT_DOT_OFFSET) {
1198 /* allow override in this case */
1199 if (reiserfs_rupasov_hash(s)) {
1202 reiserfs_warning(s,"FS seems to be empty, autodetect "
1203 "is using the default hash");
1206 r5hash=GET_HASH_VALUE (r5_hash (de.de_name, de.de_namelen));
1207 teahash=GET_HASH_VALUE (keyed_hash (de.de_name, de.de_namelen));
1208 yurahash=GET_HASH_VALUE (yura_hash (de.de_name, de.de_namelen));
1209 if ( ( (teahash == r5hash) && (GET_HASH_VALUE( deh_offset(&(de.de_deh[de.de_entry_num]))) == r5hash) ) ||
1210 ( (teahash == yurahash) && (yurahash == GET_HASH_VALUE( deh_offset(&(de.de_deh[de.de_entry_num])))) ) ||
1211 ( (r5hash == yurahash) && (yurahash == GET_HASH_VALUE( deh_offset(&(de.de_deh[de.de_entry_num])))) ) ) {
1212 reiserfs_warning(s,"Unable to automatically detect hash function. "
1213 "Please mount with -o hash={tea,rupasov,r5}",
1214 reiserfs_bdevname (s));
1218 if (GET_HASH_VALUE( deh_offset(&(de.de_deh[de.de_entry_num])) ) == yurahash)
1220 else if (GET_HASH_VALUE( deh_offset(&(de.de_deh[de.de_entry_num])) ) == teahash)
1222 else if (GET_HASH_VALUE( deh_offset(&(de.de_deh[de.de_entry_num])) ) == r5hash)
1225 reiserfs_warning (s,"Unrecognised hash function");
1234 // finds out which hash names are sorted with
1235 static int what_hash (struct super_block * s)
1239 code = sb_hash_function_code(SB_DISK_SUPER_BLOCK(s));
1241 /* reiserfs_hash_detect() == true if any of the hash mount options
1242 ** were used. We must check them to make sure the user isn't
1243 ** using a bad hash value
1245 if (code == UNSET_HASH || reiserfs_hash_detect(s))
1246 code = find_hash_out (s);
1248 if (code != UNSET_HASH && reiserfs_hash_detect(s)) {
1249 /* detection has found the hash, and we must check against the
1252 if (reiserfs_rupasov_hash(s) && code != YURA_HASH) {
1253 reiserfs_warning (s, "Error, %s hash detected, "
1254 "unable to force rupasov hash", reiserfs_hashname(code)) ;
1256 } else if (reiserfs_tea_hash(s) && code != TEA_HASH) {
1257 reiserfs_warning (s, "Error, %s hash detected, "
1258 "unable to force tea hash", reiserfs_hashname(code)) ;
1260 } else if (reiserfs_r5_hash(s) && code != R5_HASH) {
1261 reiserfs_warning (s, "Error, %s hash detected, "
1262 "unable to force r5 hash", reiserfs_hashname(code)) ;
1266 /* find_hash_out was not called or could not determine the hash */
1267 if (reiserfs_rupasov_hash(s)) {
1269 } else if (reiserfs_tea_hash(s)) {
1271 } else if (reiserfs_r5_hash(s)) {
1276 /* if we are mounted RW, and we have a new valid hash code, update
1279 if (code != UNSET_HASH &&
1280 !(s->s_flags & MS_RDONLY) &&
1281 code != sb_hash_function_code(SB_DISK_SUPER_BLOCK(s))) {
1282 set_sb_hash_function_code(SB_DISK_SUPER_BLOCK(s), code);
1287 // return pointer to appropriate function
1288 static hashf_t hash_function (struct super_block * s)
1290 switch (what_hash (s)) {
1292 reiserfs_info (s, "Using tea hash to sort names\n");
1295 reiserfs_info (s, "Using rupasov hash to sort names\n");
1298 reiserfs_info (s, "Using r5 hash to sort names\n");
1304 // this is used to set up correct value for old partitions
1305 int function2code (hashf_t func)
1307 if (func == keyed_hash)
1309 if (func == yura_hash)
1311 if (func == r5_hash)
1314 BUG() ; // should never happen
1319 #define SWARN(silent, s, ...) \
1321 reiserfs_warning (s, __VA_ARGS__)
1323 static int reiserfs_fill_super (struct super_block * s, void * data, int silent)
1325 struct inode *root_inode;
1327 struct reiserfs_transaction_handle th ;
1329 unsigned long blocks;
1330 unsigned int commit_max_age = 0;
1331 int jinit_done = 0 ;
1332 struct reiserfs_iget_args args ;
1333 struct reiserfs_super_block * rs;
1335 struct reiserfs_sb_info *sbi;
1336 int errval = -EINVAL;
1338 sbi = kmalloc(sizeof(struct reiserfs_sb_info), GFP_KERNEL);
1344 memset (sbi, 0, sizeof (struct reiserfs_sb_info));
1345 /* Set default values for options: non-aggressive tails */
1346 REISERFS_SB(s)->s_mount_opt = ( 1 << REISERFS_SMALLTAIL );
1347 /* no preallocation minimum, be smart in
1348 reiserfs_file_write instead */
1349 REISERFS_SB(s)->s_alloc_options.preallocmin = 0;
1350 /* Preallocate by 16 blocks (17-1) at once */
1351 REISERFS_SB(s)->s_alloc_options.preallocsize = 17;
1352 /* Initialize the rwsem for xattr dir */
1353 init_rwsem(&REISERFS_SB(s)->xattr_dir_sem);
1355 /* setup default block allocator options */
1356 reiserfs_init_alloc_options(s);
1359 if (reiserfs_parse_options (s, (char *) data, &(sbi->s_mount_opt), &blocks, &jdev_name, &commit_max_age) == 0) {
1364 SWARN (silent, s, "jmacd-7: reiserfs_fill_super: resize option "
1365 "for remount only");
1369 /* try old format (undistributed bitmap, super block in 8-th 1k block of a device) */
1370 if (!read_super_block (s, REISERFS_OLD_DISK_OFFSET_IN_BYTES))
1372 /* try new format (64-th 1k block), which can contain reiserfs super block */
1373 else if (read_super_block (s, REISERFS_DISK_OFFSET_IN_BYTES)) {
1374 SWARN(silent, s, "sh-2021: reiserfs_fill_super: can not find reiserfs on %s", reiserfs_bdevname (s));
1378 rs = SB_DISK_SUPER_BLOCK (s);
1379 /* Let's do basic sanity check to verify that underlying device is not
1380 smaller than the filesystem. If the check fails then abort and scream,
1381 because bad stuff will happen otherwise. */
1382 if ( s->s_bdev && s->s_bdev->bd_inode && i_size_read(s->s_bdev->bd_inode) < sb_block_count(rs)*sb_blocksize(rs)) {
1383 SWARN (silent, s, "Filesystem on %s cannot be mounted because it is bigger than the device", reiserfs_bdevname(s));
1384 SWARN(silent, s, "You may need to run fsck or increase size of your LVM partition");
1385 SWARN(silent, s, "Or may be you forgot to reboot after fdisk when it told you to");
1389 sbi->s_mount_state = SB_REISERFS_STATE(s);
1390 sbi->s_mount_state = REISERFS_VALID_FS ;
1392 if (old_format ? read_old_bitmaps(s) : read_bitmaps(s)) {
1393 SWARN(silent, s, "jmacd-8: reiserfs_fill_super: unable to read bitmap");
1396 #ifdef CONFIG_REISERFS_CHECK
1397 SWARN (silent, s, "CONFIG_REISERFS_CHECK is set ON");
1398 SWARN (silent, s, "- it is slow mode for debugging.");
1401 /* make data=ordered the default */
1402 if (!reiserfs_data_log(s) && !reiserfs_data_ordered(s) &&
1403 !reiserfs_data_writeback(s))
1405 REISERFS_SB(s)->s_mount_opt |= (1 << REISERFS_DATA_ORDERED);
1408 if (reiserfs_data_log(s)) {
1409 reiserfs_info (s, "using journaled data mode\n");
1410 } else if (reiserfs_data_ordered(s)) {
1411 reiserfs_info (s, "using ordered data mode\n");
1413 reiserfs_info (s, "using writeback data mode\n");
1416 // set_device_ro(s->s_dev, 1) ;
1417 if( journal_init(s, jdev_name, old_format, commit_max_age) ) {
1418 SWARN(silent, s, "sh-2022: reiserfs_fill_super: unable to initialize journal space") ;
1421 jinit_done = 1 ; /* once this is set, journal_release must be called
1422 ** if we error out of the mount
1425 if (reread_meta_blocks(s)) {
1426 SWARN(silent, s, "jmacd-9: reiserfs_fill_super: unable to reread meta blocks after journal init") ;
1430 if (replay_only (s))
1433 if (bdev_read_only(s->s_bdev) && !(s->s_flags & MS_RDONLY)) {
1434 SWARN(silent, s, "clm-7000: Detected readonly device, marking FS readonly") ;
1435 s->s_flags |= MS_RDONLY ;
1437 args.objectid = REISERFS_ROOT_OBJECTID ;
1438 args.dirid = REISERFS_ROOT_PARENT_OBJECTID ;
1439 root_inode = iget5_locked (s, REISERFS_ROOT_OBJECTID, reiserfs_find_actor, reiserfs_init_locked_inode, (void *)(&args));
1441 SWARN(silent, s, "jmacd-10: reiserfs_fill_super: get root inode failed");
1445 if (root_inode->i_state & I_NEW) {
1446 reiserfs_read_locked_inode(root_inode, &args);
1447 unlock_new_inode(root_inode);
1450 s->s_root = d_alloc_root(root_inode);
1456 // define and initialize hash function
1457 sbi->s_hash_function = hash_function (s);
1458 if (sbi->s_hash_function == NULL) {
1464 if (is_reiserfs_3_5 (rs) || (is_reiserfs_jr (rs) && SB_VERSION (s) == REISERFS_VERSION_1))
1465 set_bit(REISERFS_3_5, &(sbi->s_properties));
1467 set_bit(REISERFS_3_6, &(sbi->s_properties));
1469 if (!(s->s_flags & MS_RDONLY)) {
1471 journal_begin(&th, s, 1) ;
1472 reiserfs_prepare_for_journal(s, SB_BUFFER_WITH_SB(s), 1) ;
1474 set_sb_umount_state( rs, REISERFS_ERROR_FS );
1475 set_sb_fs_state (rs, 0);
1477 if (old_format_only(s)) {
1478 /* filesystem of format 3.5 either with standard or non-standard
1480 if (convert_reiserfs (s)) {
1481 /* and -o conv is given */
1483 reiserfs_info (s,"converting 3.5 filesystem to the 3.6 format") ;
1485 if (is_reiserfs_3_5 (rs))
1486 /* put magic string of 3.6 format. 2.2 will not be able to
1487 mount this filesystem anymore */
1488 memcpy (rs->s_v1.s_magic, reiserfs_3_6_magic_string,
1489 sizeof (reiserfs_3_6_magic_string));
1491 set_sb_version(rs,REISERFS_VERSION_2);
1492 reiserfs_convert_objectid_map_v1(s) ;
1493 set_bit(REISERFS_3_6, &(sbi->s_properties));
1494 clear_bit(REISERFS_3_5, &(sbi->s_properties));
1495 } else if (!silent){
1496 reiserfs_info (s, "using 3.5.x disk format\n") ;
1500 journal_mark_dirty(&th, s, SB_BUFFER_WITH_SB (s));
1501 journal_end(&th, s, 1) ;
1503 if (reiserfs_xattr_init (s, s->s_flags)) {
1509 /* look for files which were to be removed in previous session */
1510 finish_unfinished (s);
1512 if ( old_format_only(s) && !silent) {
1513 reiserfs_info (s, "using 3.5.x disk format\n") ;
1516 if (reiserfs_xattr_init (s, s->s_flags)) {
1522 // mark hash in super block: it could be unset. overwrite should be ok
1523 set_sb_hash_function_code( rs, function2code(sbi->s_hash_function ) );
1527 reiserfs_proc_info_init( s );
1529 init_waitqueue_head (&(sbi->s_wait));
1530 sbi->bitmap_lock = SPIN_LOCK_UNLOCKED;
1535 if (jinit_done) { /* kill the commit thread, free journal ram */
1536 journal_release_error(NULL, s) ;
1538 if (SB_DISK_SUPER_BLOCK (s)) {
1539 for (j = 0; j < SB_BMAP_NR (s); j ++) {
1540 if (SB_AP_BITMAP (s))
1541 brelse (SB_AP_BITMAP (s)[j].bh);
1543 if (SB_AP_BITMAP (s))
1544 vfree (SB_AP_BITMAP (s));
1546 if (SB_BUFFER_WITH_SB (s))
1547 brelse(SB_BUFFER_WITH_SB (s));
1553 s->s_fs_info = NULL;
1558 static int reiserfs_statfs (struct super_block * s, struct kstatfs * buf)
1560 struct reiserfs_super_block * rs = SB_DISK_SUPER_BLOCK (s);
1562 buf->f_namelen = (REISERFS_MAX_NAME (s->s_blocksize));
1563 buf->f_bfree = sb_free_blocks(rs);
1564 buf->f_bavail = buf->f_bfree;
1565 buf->f_blocks = sb_block_count(rs) - sb_bmap_nr(rs) - 1;
1566 buf->f_bsize = s->s_blocksize;
1567 /* changed to accommodate gcc folks.*/
1568 buf->f_type = REISERFS_SUPER_MAGIC;
1572 static struct super_block*
1573 get_super_block (struct file_system_type *fs_type, int flags,
1574 const char *dev_name, void *data)
1576 return get_sb_bdev(fs_type, flags, dev_name, data, reiserfs_fill_super);
1580 init_reiserfs_fs ( void )
1584 if ((ret = init_inodecache ())) {
1588 if ((ret = reiserfs_xattr_register_handlers ()))
1589 goto failed_reiserfs_xattr_register_handlers;
1591 reiserfs_proc_info_global_init ();
1592 reiserfs_proc_register_global ("version", reiserfs_global_version_in_proc);
1594 ret = register_filesystem (& reiserfs_fs_type);
1600 reiserfs_xattr_unregister_handlers ();
1602 failed_reiserfs_xattr_register_handlers:
1603 reiserfs_proc_unregister_global ("version");
1604 reiserfs_proc_info_global_done ();
1605 destroy_inodecache ();
1611 exit_reiserfs_fs ( void )
1613 reiserfs_xattr_unregister_handlers ();
1614 reiserfs_proc_unregister_global ("version");
1615 reiserfs_proc_info_global_done ();
1616 unregister_filesystem (& reiserfs_fs_type);
1617 destroy_inodecache ();
1620 struct file_system_type reiserfs_fs_type = {
1621 .owner = THIS_MODULE,
1623 .get_sb = get_super_block,
1624 .kill_sb = kill_block_super,
1625 .fs_flags = FS_REQUIRES_DEV,
1628 MODULE_DESCRIPTION ("ReiserFS journaled filesystem");
1629 MODULE_AUTHOR ("Hans Reiser <reiser@namesys.com>");
1630 MODULE_LICENSE ("GPL");
1632 module_init (init_reiserfs_fs);
1633 module_exit (exit_reiserfs_fs);