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 /* Compatibility stuff, so that -o notail for old setups still work */
699 {"tails", .arg_required = 't', .values = tails},
700 {"notail", .clrmask = (1<<REISERFS_LARGETAIL)|(1<<REISERFS_SMALLTAIL)},
701 {"conv", .setmask = 1<<REISERFS_CONVERT},
702 {"attrs", .setmask = 1<<REISERFS_ATTRS},
703 {"noattrs", .clrmask = 1<<REISERFS_ATTRS},
704 {"user_xattr", .setmask = 1<<REISERFS_XATTRS_USER},
705 {"nouser_xattr",.clrmask = 1<<REISERFS_XATTRS_USER},
706 {"tagxid", .setmask = 1<<REISERFS_TAGXID},
707 #ifdef CONFIG_REISERFS_FS_POSIX_ACL
708 {"acl", .setmask = 1<<REISERFS_POSIXACL},
709 {"noacl", .clrmask = 1<<REISERFS_POSIXACL},
711 {"nolog",}, /* This is unsupported */
712 {"replayonly", .setmask = 1<<REPLAYONLY},
713 {"block-allocator", .arg_required = 'a', .values = balloc},
714 {"data", .arg_required = 'd', .values = logging_mode},
715 {"resize", .arg_required = 'r', .values = NULL},
716 {"jdev", .arg_required = 'j', .values = NULL},
717 {"nolargeio", .arg_required = 'w', .values = NULL},
718 {"commit", .arg_required = 'c', .values = NULL},
725 if (!options || !*options)
726 /* use default configuration: create tails, journaling on, no
727 conversion to newest format */
730 for (pos = options; pos; ) {
731 c = reiserfs_getopt (s, &pos, opts, &arg, mount_options);
733 /* wrong option is given */
741 *blocks = simple_strtoul (arg, &p, 0);
743 /* NNN does not look like a number */
744 reiserfs_warning (s, "reiserfs_parse_options: bad value %s", arg);
751 unsigned long val = simple_strtoul (arg, &p, 0);
752 /* commit=NNN (time in seconds) */
753 if ( *p != '\0' || val >= (unsigned int)-1) {
754 reiserfs_warning (s, "reiserfs_parse_options: bad value %s", arg); return 0;
756 *commit_max_age = (unsigned int)val;
761 int val = simple_strtoul (arg, &p, 0);
764 reiserfs_warning (s, "reiserfs_parse_options: non-numeric value %s for nolargeio option", arg);
768 reiserfs_default_io_size = PAGE_SIZE;
770 reiserfs_default_io_size = 128 * 1024;
774 if (arg && *arg && jdev_name) {
775 if ( *jdev_name ) { //Hm, already assigned?
776 reiserfs_warning (s, "reiserfs_parse_options: journal device was already specified to be %s", *jdev_name);
787 static void switch_data_mode(struct super_block *s, unsigned long mode) {
788 REISERFS_SB(s)->s_mount_opt &= ~((1 << REISERFS_DATA_LOG) |
789 (1 << REISERFS_DATA_ORDERED) |
790 (1 << REISERFS_DATA_WRITEBACK));
791 REISERFS_SB(s)->s_mount_opt |= (1 << mode);
794 static void handle_data_mode(struct super_block *s, unsigned long mount_options)
796 if (mount_options & (1 << REISERFS_DATA_LOG)) {
797 if (!reiserfs_data_log(s)) {
798 switch_data_mode(s, REISERFS_DATA_LOG);
799 reiserfs_info (s, "switching to journaled data mode\n");
801 } else if (mount_options & (1 << REISERFS_DATA_ORDERED)) {
802 if (!reiserfs_data_ordered(s)) {
803 switch_data_mode(s, REISERFS_DATA_ORDERED);
804 reiserfs_info (s, "switching to ordered data mode\n");
806 } else if (mount_options & (1 << REISERFS_DATA_WRITEBACK)) {
807 if (!reiserfs_data_writeback(s)) {
808 switch_data_mode(s, REISERFS_DATA_WRITEBACK);
809 reiserfs_info (s, "switching to writeback data mode\n");
814 static void handle_attrs( struct super_block *s )
816 struct reiserfs_super_block * rs;
818 if( reiserfs_attrs( s ) ) {
819 rs = SB_DISK_SUPER_BLOCK (s);
820 if( old_format_only(s) ) {
821 reiserfs_warning(s, "reiserfs: cannot support attributes on 3.5.x disk format" );
822 REISERFS_SB(s) -> s_mount_opt &= ~ ( 1 << REISERFS_ATTRS );
825 if( !( le32_to_cpu( rs -> s_flags ) & reiserfs_attrs_cleared ) ) {
826 reiserfs_warning(s, "reiserfs: cannot support attributes until flag is set in super-block" );
827 REISERFS_SB(s) -> s_mount_opt &= ~ ( 1 << REISERFS_ATTRS );
832 static int reiserfs_remount (struct super_block * s, int * mount_flags, char * arg)
834 struct reiserfs_super_block * rs;
835 struct reiserfs_transaction_handle th ;
836 unsigned long blocks;
837 unsigned long mount_options = REISERFS_SB(s)->s_mount_opt;
838 unsigned long safe_mask = 0;
839 unsigned int commit_max_age = (unsigned int)-1;
841 rs = SB_DISK_SUPER_BLOCK (s);
843 if (!reiserfs_parse_options(s, arg, &mount_options, &blocks, NULL, &commit_max_age))
848 /* Add options that are safe here */
849 safe_mask |= 1 << REISERFS_SMALLTAIL;
850 safe_mask |= 1 << REISERFS_LARGETAIL;
851 safe_mask |= 1 << REISERFS_NO_BORDER;
852 safe_mask |= 1 << REISERFS_NO_UNHASHED_RELOCATION;
853 safe_mask |= 1 << REISERFS_HASHED_RELOCATION;
854 safe_mask |= 1 << REISERFS_TEST4;
855 safe_mask |= 1 << REISERFS_ATTRS;
856 safe_mask |= 1 << REISERFS_XATTRS_USER;
857 safe_mask |= 1 << REISERFS_POSIXACL;
859 /* Update the bitmask, taking care to keep
860 * the bits we're not allowed to change here */
861 REISERFS_SB(s)->s_mount_opt = (REISERFS_SB(s)->s_mount_opt & ~safe_mask) | (mount_options & safe_mask);
863 if(commit_max_age != 0 && commit_max_age != (unsigned int)-1) {
864 SB_JOURNAL_MAX_COMMIT_AGE(s) = commit_max_age;
865 SB_JOURNAL_MAX_TRANS_AGE(s) = commit_max_age;
867 else if(commit_max_age == 0)
869 /* 0 means restore defaults. */
870 SB_JOURNAL_MAX_COMMIT_AGE(s) = SB_JOURNAL_DEFAULT_MAX_COMMIT_AGE(s);
871 SB_JOURNAL_MAX_TRANS_AGE(s) = JOURNAL_MAX_TRANS_AGE;
875 int rc = reiserfs_resize(s, blocks);
880 if (*mount_flags & MS_RDONLY) {
881 reiserfs_xattr_init (s, *mount_flags);
882 /* remount read-only */
883 if (s->s_flags & MS_RDONLY)
884 /* it is read-only already */
886 /* try to remount file system with read-only permissions */
887 if (sb_umount_state(rs) == REISERFS_VALID_FS || REISERFS_SB(s)->s_mount_state != REISERFS_VALID_FS) {
891 journal_begin(&th, s, 10) ;
892 /* Mounting a rw partition read-only. */
893 reiserfs_prepare_for_journal(s, SB_BUFFER_WITH_SB(s), 1) ;
894 set_sb_umount_state( rs, REISERFS_SB(s)->s_mount_state );
895 journal_mark_dirty(&th, s, SB_BUFFER_WITH_SB (s));
897 /* remount read-write */
898 if (!(s->s_flags & MS_RDONLY)) {
899 reiserfs_xattr_init (s, *mount_flags);
900 return 0; /* We are read-write already */
903 handle_data_mode(s, mount_options);
904 REISERFS_SB(s)->s_mount_state = sb_umount_state(rs) ;
905 s->s_flags &= ~MS_RDONLY ; /* now it is safe to call journal_begin */
906 journal_begin(&th, s, 10) ;
908 /* Mount a partition which is read-only, read-write */
909 reiserfs_prepare_for_journal(s, SB_BUFFER_WITH_SB(s), 1) ;
910 REISERFS_SB(s)->s_mount_state = sb_umount_state(rs);
911 s->s_flags &= ~MS_RDONLY;
912 set_sb_umount_state( rs, REISERFS_ERROR_FS );
913 /* mark_buffer_dirty (SB_BUFFER_WITH_SB (s), 1); */
914 journal_mark_dirty(&th, s, SB_BUFFER_WITH_SB (s));
915 REISERFS_SB(s)->s_mount_state = REISERFS_VALID_FS ;
917 /* this will force a full flush of all journal lists */
918 SB_JOURNAL(s)->j_must_wait = 1 ;
919 journal_end(&th, s, 10) ;
922 if (!( *mount_flags & MS_RDONLY ) ) {
923 finish_unfinished( s );
924 reiserfs_xattr_init (s, *mount_flags);
930 /* load_bitmap_info_data - Sets up the reiserfs_bitmap_info structure from disk.
931 * @sb - superblock for this filesystem
932 * @bi - the bitmap info to be loaded. Requires that bi->bh is valid.
934 * This routine counts how many free bits there are, finding the first zero
935 * as a side effect. Could also be implemented as a loop of test_bit() calls, or
936 * a loop of find_first_zero_bit() calls. This implementation is similar to
937 * find_first_zero_bit(), but doesn't return after it finds the first bit.
938 * Should only be called on fs mount, but should be fairly efficient anyways.
940 * bi->first_zero_hint is considered unset if it == 0, since the bitmap itself
941 * will * invariably occupt block 0 represented in the bitmap. The only
942 * exception to this is when free_count also == 0, since there will be no
943 * free blocks at all.
946 static void load_bitmap_info_data (struct super_block *sb,
947 struct reiserfs_bitmap_info *bi)
949 unsigned long *cur = (unsigned long *)bi->bh->b_data;
951 while ((char *)cur < (bi->bh->b_data + sb->s_blocksize)) {
953 /* No need to scan if all 0's or all 1's.
954 * Since we're only counting 0's, we can simply ignore all 1's */
956 if (bi->first_zero_hint == 0) {
957 bi->first_zero_hint = ((char *)cur - bi->bh->b_data) << 3;
959 bi->free_count += sizeof(unsigned long)*8;
960 } else if (*cur != ~0L) {
962 for (b = 0; b < sizeof(unsigned long)*8; b++) {
963 if (!reiserfs_test_le_bit (b, cur)) {
965 if (bi->first_zero_hint == 0)
966 bi->first_zero_hint =
967 (((char *)cur - bi->bh->b_data) << 3) + b;
974 #ifdef CONFIG_REISERFS_CHECK
975 // This outputs a lot of unneded info on big FSes
976 // reiserfs_warning ("bitmap loaded from block %d: %d free blocks",
977 // bi->bh->b_blocknr, bi->free_count);
981 static int read_bitmaps (struct super_block * s)
985 SB_AP_BITMAP (s) = vmalloc (sizeof (struct reiserfs_bitmap_info) * SB_BMAP_NR(s));
986 if (SB_AP_BITMAP (s) == 0)
988 memset (SB_AP_BITMAP (s), 0, sizeof (struct reiserfs_bitmap_info) * SB_BMAP_NR(s));
989 for (i = 0, bmap_nr = REISERFS_DISK_OFFSET_IN_BYTES / s->s_blocksize + 1;
990 i < SB_BMAP_NR(s); i++, bmap_nr = s->s_blocksize * 8 * i) {
991 SB_AP_BITMAP (s)[i].bh = sb_getblk(s, bmap_nr);
992 if (!buffer_uptodate(SB_AP_BITMAP(s)[i].bh))
993 ll_rw_block(READ, 1, &SB_AP_BITMAP(s)[i].bh);
995 for (i = 0; i < SB_BMAP_NR(s); i++) {
996 wait_on_buffer(SB_AP_BITMAP (s)[i].bh);
997 if (!buffer_uptodate(SB_AP_BITMAP(s)[i].bh)) {
998 reiserfs_warning(s,"sh-2029: reiserfs read_bitmaps: "
999 "bitmap block (#%lu) reading failed",
1000 SB_AP_BITMAP(s)[i].bh->b_blocknr);
1001 for (i = 0; i < SB_BMAP_NR(s); i++)
1002 brelse(SB_AP_BITMAP(s)[i].bh);
1003 vfree(SB_AP_BITMAP(s));
1004 SB_AP_BITMAP(s) = NULL;
1007 load_bitmap_info_data (s, SB_AP_BITMAP (s) + i);
1012 static int read_old_bitmaps (struct super_block * s)
1015 struct reiserfs_super_block * rs = SB_DISK_SUPER_BLOCK(s);
1016 int bmp1 = (REISERFS_OLD_DISK_OFFSET_IN_BYTES / s->s_blocksize) + 1; /* first of bitmap blocks */
1018 /* read true bitmap */
1019 SB_AP_BITMAP (s) = vmalloc (sizeof (struct reiserfs_buffer_info *) * sb_bmap_nr(rs));
1020 if (SB_AP_BITMAP (s) == 0)
1023 memset (SB_AP_BITMAP (s), 0, sizeof (struct reiserfs_buffer_info *) * sb_bmap_nr(rs));
1025 for (i = 0; i < sb_bmap_nr(rs); i ++) {
1026 SB_AP_BITMAP (s)[i].bh = sb_bread (s, bmp1 + i);
1027 if (!SB_AP_BITMAP (s)[i].bh)
1029 load_bitmap_info_data (s, SB_AP_BITMAP (s) + i);
1035 void check_bitmap (struct super_block * s)
1041 while (i < SB_BLOCK_COUNT (s)) {
1042 buf = SB_AP_BITMAP (s)[i / (s->s_blocksize * 8)].bh->b_data;
1043 if (!reiserfs_test_le_bit (i % (s->s_blocksize * 8), buf))
1048 if (free != SB_FREE_BLOCKS (s))
1049 reiserfs_warning (s,"vs-4000: check_bitmap: %d free blocks, must be %d",
1050 free, SB_FREE_BLOCKS (s));
1053 static int read_super_block (struct super_block * s, int offset)
1055 struct buffer_head * bh;
1056 struct reiserfs_super_block * rs;
1060 bh = sb_bread (s, offset / s->s_blocksize);
1062 reiserfs_warning (s, "sh-2006: read_super_block: "
1063 "bread failed (dev %s, block %lu, size %lu)",
1064 reiserfs_bdevname (s), offset / s->s_blocksize, s->s_blocksize);
1068 rs = (struct reiserfs_super_block *)bh->b_data;
1069 if (!is_any_reiserfs_magic_string (rs)) {
1075 // ok, reiserfs signature (old or new) found in at the given offset
1077 fs_blocksize = sb_blocksize(rs);
1079 sb_set_blocksize (s, fs_blocksize);
1081 bh = sb_bread (s, offset / s->s_blocksize);
1083 reiserfs_warning (s, "sh-2007: read_super_block: "
1084 "bread failed (dev %s, block %lu, size %lu)\n",
1085 reiserfs_bdevname (s), offset / s->s_blocksize, s->s_blocksize);
1089 rs = (struct reiserfs_super_block *)bh->b_data;
1090 if (sb_blocksize(rs) != s->s_blocksize) {
1091 reiserfs_warning (s, "sh-2011: read_super_block: "
1092 "can't find a reiserfs filesystem on (dev %s, block %Lu, size %lu)\n",
1093 reiserfs_bdevname (s), (unsigned long long)bh->b_blocknr, s->s_blocksize);
1098 if ( rs->s_v1.s_root_block == -1 ) {
1100 reiserfs_warning (s, "Unfinished reiserfsck --rebuild-tree run detected. Please run\n"
1101 "reiserfsck --rebuild-tree and wait for a completion. If that fails\n"
1102 "get newer reiserfsprogs package");
1106 SB_BUFFER_WITH_SB (s) = bh;
1107 SB_DISK_SUPER_BLOCK (s) = rs;
1109 if (is_reiserfs_jr (rs)) {
1110 /* magic is of non-standard journal filesystem, look at s_version to
1111 find which format is in use */
1112 if (sb_version(rs) == REISERFS_VERSION_2)
1113 reiserfs_warning (s, "read_super_block: found reiserfs format \"3.6\""
1114 " with non-standard journal");
1115 else if (sb_version(rs) == REISERFS_VERSION_1)
1116 reiserfs_warning (s, "read_super_block: found reiserfs format \"3.5\""
1117 " with non-standard journal");
1119 reiserfs_warning (s, "sh-2012: read_super_block: found unknown "
1120 "format \"%u\" of reiserfs with non-standard magic",
1126 /* s_version of standard format may contain incorrect information,
1127 so we just look at the magic string */
1128 reiserfs_info (s, "found reiserfs format \"%s\" with standard journal\n",
1129 is_reiserfs_3_5 (rs) ? "3.5" : "3.6");
1131 s->s_op = &reiserfs_sops;
1132 s->s_export_op = &reiserfs_export_ops;
1134 /* new format is limited by the 32 bit wide i_blocks field, want to
1135 ** be one full block below that.
1137 s->s_maxbytes = (512LL << 32) - s->s_blocksize ;
1143 /* after journal replay, reread all bitmap and super blocks */
1144 static int reread_meta_blocks(struct super_block *s) {
1146 ll_rw_block(READ, 1, &(SB_BUFFER_WITH_SB(s))) ;
1147 wait_on_buffer(SB_BUFFER_WITH_SB(s)) ;
1148 if (!buffer_uptodate(SB_BUFFER_WITH_SB(s))) {
1149 reiserfs_warning (s, "reread_meta_blocks, error reading the super") ;
1153 for (i = 0; i < SB_BMAP_NR(s) ; i++) {
1154 ll_rw_block(READ, 1, &(SB_AP_BITMAP(s)[i].bh)) ;
1155 wait_on_buffer(SB_AP_BITMAP(s)[i].bh) ;
1156 if (!buffer_uptodate(SB_AP_BITMAP(s)[i].bh)) {
1157 reiserfs_warning (s, "reread_meta_blocks, error reading bitmap block number %d at %llu",
1158 i, (unsigned long long)SB_AP_BITMAP(s)[i].bh->b_blocknr) ;
1167 /////////////////////////////////////////////////////
1168 // hash detection stuff
1171 // if root directory is empty - we set default - Yura's - hash and
1173 // FIXME: we look for only one name in a directory. If tea and yura
1174 // bith have the same value - we ask user to send report to the
1176 __u32 find_hash_out (struct super_block * s)
1179 struct inode * inode;
1181 INITIALIZE_PATH (path);
1182 struct reiserfs_dir_entry de;
1183 __u32 hash = DEFAULT_HASH;
1185 inode = s->s_root->d_inode;
1187 do { // Some serious "goto"-hater was there ;)
1188 u32 teahash, r5hash, yurahash;
1190 make_cpu_key (&key, inode, ~0, TYPE_DIRENTRY, 3);
1191 retval = search_by_entry_key (s, &key, &path, &de);
1192 if (retval == IO_ERROR) {
1196 if (retval == NAME_NOT_FOUND)
1198 set_de_name_and_namelen (&de);
1199 if (deh_offset( &(de.de_deh[de.de_entry_num]) ) == DOT_DOT_OFFSET) {
1200 /* allow override in this case */
1201 if (reiserfs_rupasov_hash(s)) {
1204 reiserfs_warning(s,"FS seems to be empty, autodetect "
1205 "is using the default hash");
1208 r5hash=GET_HASH_VALUE (r5_hash (de.de_name, de.de_namelen));
1209 teahash=GET_HASH_VALUE (keyed_hash (de.de_name, de.de_namelen));
1210 yurahash=GET_HASH_VALUE (yura_hash (de.de_name, de.de_namelen));
1211 if ( ( (teahash == r5hash) && (GET_HASH_VALUE( deh_offset(&(de.de_deh[de.de_entry_num]))) == r5hash) ) ||
1212 ( (teahash == yurahash) && (yurahash == GET_HASH_VALUE( deh_offset(&(de.de_deh[de.de_entry_num])))) ) ||
1213 ( (r5hash == yurahash) && (yurahash == GET_HASH_VALUE( deh_offset(&(de.de_deh[de.de_entry_num])))) ) ) {
1214 reiserfs_warning(s,"Unable to automatically detect hash function. "
1215 "Please mount with -o hash={tea,rupasov,r5}",
1216 reiserfs_bdevname (s));
1220 if (GET_HASH_VALUE( deh_offset(&(de.de_deh[de.de_entry_num])) ) == yurahash)
1222 else if (GET_HASH_VALUE( deh_offset(&(de.de_deh[de.de_entry_num])) ) == teahash)
1224 else if (GET_HASH_VALUE( deh_offset(&(de.de_deh[de.de_entry_num])) ) == r5hash)
1227 reiserfs_warning (s,"Unrecognised hash function");
1236 // finds out which hash names are sorted with
1237 static int what_hash (struct super_block * s)
1241 code = sb_hash_function_code(SB_DISK_SUPER_BLOCK(s));
1243 /* reiserfs_hash_detect() == true if any of the hash mount options
1244 ** were used. We must check them to make sure the user isn't
1245 ** using a bad hash value
1247 if (code == UNSET_HASH || reiserfs_hash_detect(s))
1248 code = find_hash_out (s);
1250 if (code != UNSET_HASH && reiserfs_hash_detect(s)) {
1251 /* detection has found the hash, and we must check against the
1254 if (reiserfs_rupasov_hash(s) && code != YURA_HASH) {
1255 reiserfs_warning (s, "Error, %s hash detected, "
1256 "unable to force rupasov hash", reiserfs_hashname(code)) ;
1258 } else if (reiserfs_tea_hash(s) && code != TEA_HASH) {
1259 reiserfs_warning (s, "Error, %s hash detected, "
1260 "unable to force tea hash", reiserfs_hashname(code)) ;
1262 } else if (reiserfs_r5_hash(s) && code != R5_HASH) {
1263 reiserfs_warning (s, "Error, %s hash detected, "
1264 "unable to force r5 hash", reiserfs_hashname(code)) ;
1268 /* find_hash_out was not called or could not determine the hash */
1269 if (reiserfs_rupasov_hash(s)) {
1271 } else if (reiserfs_tea_hash(s)) {
1273 } else if (reiserfs_r5_hash(s)) {
1278 /* if we are mounted RW, and we have a new valid hash code, update
1281 if (code != UNSET_HASH &&
1282 !(s->s_flags & MS_RDONLY) &&
1283 code != sb_hash_function_code(SB_DISK_SUPER_BLOCK(s))) {
1284 set_sb_hash_function_code(SB_DISK_SUPER_BLOCK(s), code);
1289 // return pointer to appropriate function
1290 static hashf_t hash_function (struct super_block * s)
1292 switch (what_hash (s)) {
1294 reiserfs_info (s, "Using tea hash to sort names\n");
1297 reiserfs_info (s, "Using rupasov hash to sort names\n");
1300 reiserfs_info (s, "Using r5 hash to sort names\n");
1306 // this is used to set up correct value for old partitions
1307 int function2code (hashf_t func)
1309 if (func == keyed_hash)
1311 if (func == yura_hash)
1313 if (func == r5_hash)
1316 BUG() ; // should never happen
1321 #define SWARN(silent, s, ...) \
1323 reiserfs_warning (s, __VA_ARGS__)
1325 static int reiserfs_fill_super (struct super_block * s, void * data, int silent)
1327 struct inode *root_inode;
1329 struct reiserfs_transaction_handle th ;
1331 unsigned long blocks;
1332 unsigned int commit_max_age = 0;
1333 int jinit_done = 0 ;
1334 struct reiserfs_iget_args args ;
1335 struct reiserfs_super_block * rs;
1337 struct reiserfs_sb_info *sbi;
1338 int errval = -EINVAL;
1340 sbi = kmalloc(sizeof(struct reiserfs_sb_info), GFP_KERNEL);
1346 memset (sbi, 0, sizeof (struct reiserfs_sb_info));
1347 /* Set default values for options: non-aggressive tails */
1348 REISERFS_SB(s)->s_mount_opt = ( 1 << REISERFS_SMALLTAIL );
1349 /* no preallocation minimum, be smart in
1350 reiserfs_file_write instead */
1351 REISERFS_SB(s)->s_alloc_options.preallocmin = 0;
1352 /* Preallocate by 16 blocks (17-1) at once */
1353 REISERFS_SB(s)->s_alloc_options.preallocsize = 17;
1354 /* Initialize the rwsem for xattr dir */
1355 init_rwsem(&REISERFS_SB(s)->xattr_dir_sem);
1357 /* setup default block allocator options */
1358 reiserfs_init_alloc_options(s);
1361 if (reiserfs_parse_options (s, (char *) data, &(sbi->s_mount_opt), &blocks, &jdev_name, &commit_max_age) == 0) {
1366 SWARN (silent, s, "jmacd-7: reiserfs_fill_super: resize option "
1367 "for remount only");
1371 /* try old format (undistributed bitmap, super block in 8-th 1k block of a device) */
1372 if (!read_super_block (s, REISERFS_OLD_DISK_OFFSET_IN_BYTES))
1374 /* try new format (64-th 1k block), which can contain reiserfs super block */
1375 else if (read_super_block (s, REISERFS_DISK_OFFSET_IN_BYTES)) {
1376 SWARN(silent, s, "sh-2021: reiserfs_fill_super: can not find reiserfs on %s", reiserfs_bdevname (s));
1380 rs = SB_DISK_SUPER_BLOCK (s);
1381 /* Let's do basic sanity check to verify that underlying device is not
1382 smaller than the filesystem. If the check fails then abort and scream,
1383 because bad stuff will happen otherwise. */
1384 if ( s->s_bdev && s->s_bdev->bd_inode && i_size_read(s->s_bdev->bd_inode) < sb_block_count(rs)*sb_blocksize(rs)) {
1385 SWARN (silent, s, "Filesystem on %s cannot be mounted because it is bigger than the device", reiserfs_bdevname(s));
1386 SWARN(silent, s, "You may need to run fsck or increase size of your LVM partition");
1387 SWARN(silent, s, "Or may be you forgot to reboot after fdisk when it told you to");
1391 sbi->s_mount_state = SB_REISERFS_STATE(s);
1392 sbi->s_mount_state = REISERFS_VALID_FS ;
1394 if (old_format ? read_old_bitmaps(s) : read_bitmaps(s)) {
1395 SWARN(silent, s, "jmacd-8: reiserfs_fill_super: unable to read bitmap");
1398 #ifdef CONFIG_REISERFS_CHECK
1399 SWARN (silent, s, "CONFIG_REISERFS_CHECK is set ON");
1400 SWARN (silent, s, "- it is slow mode for debugging.");
1403 /* make data=ordered the default */
1404 if (!reiserfs_data_log(s) && !reiserfs_data_ordered(s) &&
1405 !reiserfs_data_writeback(s))
1407 REISERFS_SB(s)->s_mount_opt |= (1 << REISERFS_DATA_ORDERED);
1410 if (reiserfs_data_log(s)) {
1411 reiserfs_info (s, "using journaled data mode\n");
1412 } else if (reiserfs_data_ordered(s)) {
1413 reiserfs_info (s, "using ordered data mode\n");
1415 reiserfs_info (s, "using writeback data mode\n");
1418 // set_device_ro(s->s_dev, 1) ;
1419 if( journal_init(s, jdev_name, old_format, commit_max_age) ) {
1420 SWARN(silent, s, "sh-2022: reiserfs_fill_super: unable to initialize journal space") ;
1423 jinit_done = 1 ; /* once this is set, journal_release must be called
1424 ** if we error out of the mount
1427 if (reread_meta_blocks(s)) {
1428 SWARN(silent, s, "jmacd-9: reiserfs_fill_super: unable to reread meta blocks after journal init") ;
1432 if (replay_only (s))
1435 if (bdev_read_only(s->s_bdev) && !(s->s_flags & MS_RDONLY)) {
1436 SWARN(silent, s, "clm-7000: Detected readonly device, marking FS readonly") ;
1437 s->s_flags |= MS_RDONLY ;
1439 args.objectid = REISERFS_ROOT_OBJECTID ;
1440 args.dirid = REISERFS_ROOT_PARENT_OBJECTID ;
1441 root_inode = iget5_locked (s, REISERFS_ROOT_OBJECTID, reiserfs_find_actor, reiserfs_init_locked_inode, (void *)(&args));
1443 SWARN(silent, s, "jmacd-10: reiserfs_fill_super: get root inode failed");
1447 if (root_inode->i_state & I_NEW) {
1448 reiserfs_read_locked_inode(root_inode, &args);
1449 unlock_new_inode(root_inode);
1452 s->s_root = d_alloc_root(root_inode);
1458 // define and initialize hash function
1459 sbi->s_hash_function = hash_function (s);
1460 if (sbi->s_hash_function == NULL) {
1466 if (is_reiserfs_3_5 (rs) || (is_reiserfs_jr (rs) && SB_VERSION (s) == REISERFS_VERSION_1))
1467 set_bit(REISERFS_3_5, &(sbi->s_properties));
1469 set_bit(REISERFS_3_6, &(sbi->s_properties));
1471 if (!(s->s_flags & MS_RDONLY)) {
1473 journal_begin(&th, s, 1) ;
1474 reiserfs_prepare_for_journal(s, SB_BUFFER_WITH_SB(s), 1) ;
1476 set_sb_umount_state( rs, REISERFS_ERROR_FS );
1477 set_sb_fs_state (rs, 0);
1479 if (old_format_only(s)) {
1480 /* filesystem of format 3.5 either with standard or non-standard
1482 if (convert_reiserfs (s)) {
1483 /* and -o conv is given */
1485 reiserfs_info (s,"converting 3.5 filesystem to the 3.6 format") ;
1487 if (is_reiserfs_3_5 (rs))
1488 /* put magic string of 3.6 format. 2.2 will not be able to
1489 mount this filesystem anymore */
1490 memcpy (rs->s_v1.s_magic, reiserfs_3_6_magic_string,
1491 sizeof (reiserfs_3_6_magic_string));
1493 set_sb_version(rs,REISERFS_VERSION_2);
1494 reiserfs_convert_objectid_map_v1(s) ;
1495 set_bit(REISERFS_3_6, &(sbi->s_properties));
1496 clear_bit(REISERFS_3_5, &(sbi->s_properties));
1497 } else if (!silent){
1498 reiserfs_info (s, "using 3.5.x disk format\n") ;
1502 journal_mark_dirty(&th, s, SB_BUFFER_WITH_SB (s));
1503 journal_end(&th, s, 1) ;
1505 if (reiserfs_xattr_init (s, s->s_flags)) {
1511 /* look for files which were to be removed in previous session */
1512 finish_unfinished (s);
1514 if ( old_format_only(s) && !silent) {
1515 reiserfs_info (s, "using 3.5.x disk format\n") ;
1518 if (reiserfs_xattr_init (s, s->s_flags)) {
1524 // mark hash in super block: it could be unset. overwrite should be ok
1525 set_sb_hash_function_code( rs, function2code(sbi->s_hash_function ) );
1529 reiserfs_proc_info_init( s );
1531 init_waitqueue_head (&(sbi->s_wait));
1532 sbi->bitmap_lock = SPIN_LOCK_UNLOCKED;
1537 if (jinit_done) { /* kill the commit thread, free journal ram */
1538 journal_release_error(NULL, s) ;
1540 if (SB_DISK_SUPER_BLOCK (s)) {
1541 for (j = 0; j < SB_BMAP_NR (s); j ++) {
1542 if (SB_AP_BITMAP (s))
1543 brelse (SB_AP_BITMAP (s)[j].bh);
1545 if (SB_AP_BITMAP (s))
1546 vfree (SB_AP_BITMAP (s));
1548 if (SB_BUFFER_WITH_SB (s))
1549 brelse(SB_BUFFER_WITH_SB (s));
1555 s->s_fs_info = NULL;
1560 static int reiserfs_statfs (struct super_block * s, struct kstatfs * buf)
1562 struct reiserfs_super_block * rs = SB_DISK_SUPER_BLOCK (s);
1564 buf->f_namelen = (REISERFS_MAX_NAME (s->s_blocksize));
1565 buf->f_bfree = sb_free_blocks(rs);
1566 buf->f_bavail = buf->f_bfree;
1567 buf->f_blocks = sb_block_count(rs) - sb_bmap_nr(rs) - 1;
1568 buf->f_bsize = s->s_blocksize;
1569 /* changed to accommodate gcc folks.*/
1570 buf->f_type = REISERFS_SUPER_MAGIC;
1574 static struct super_block*
1575 get_super_block (struct file_system_type *fs_type, int flags,
1576 const char *dev_name, void *data)
1578 return get_sb_bdev(fs_type, flags, dev_name, data, reiserfs_fill_super);
1582 init_reiserfs_fs ( void )
1586 if ((ret = init_inodecache ())) {
1590 if ((ret = reiserfs_xattr_register_handlers ()))
1591 goto failed_reiserfs_xattr_register_handlers;
1593 reiserfs_proc_info_global_init ();
1594 reiserfs_proc_register_global ("version", reiserfs_global_version_in_proc);
1596 ret = register_filesystem (& reiserfs_fs_type);
1602 reiserfs_xattr_unregister_handlers ();
1604 failed_reiserfs_xattr_register_handlers:
1605 reiserfs_proc_unregister_global ("version");
1606 reiserfs_proc_info_global_done ();
1607 destroy_inodecache ();
1613 exit_reiserfs_fs ( void )
1615 reiserfs_xattr_unregister_handlers ();
1616 reiserfs_proc_unregister_global ("version");
1617 reiserfs_proc_info_global_done ();
1618 unregister_filesystem (& reiserfs_fs_type);
1619 destroy_inodecache ();
1622 struct file_system_type reiserfs_fs_type = {
1623 .owner = THIS_MODULE,
1625 .get_sb = get_super_block,
1626 .kill_sb = kill_block_super,
1627 .fs_flags = FS_REQUIRES_DEV,
1630 MODULE_DESCRIPTION ("ReiserFS journaled filesystem");
1631 MODULE_AUTHOR ("Hans Reiser <reiser@namesys.com>");
1632 MODULE_LICENSE ("GPL");
1634 module_init (init_reiserfs_fs);
1635 module_exit (exit_reiserfs_fs);