X-Git-Url: http://ftp.safe.ca/?a=blobdiff_plain;f=fs%2Freiserfs%2Fsuper.c;h=1215a4f50cd2d0c37e5fa3829b4fe95dbc8d0d86;hb=2a32cebd6cbcc43996c3e2d114fa32ba1e71192a;hp=2283f18aa1dc266f0190f9c116f28c0f5a81b01e;hpb=3e8962be915bacc1d70e4849a075041838d60a3f;p=safe%2Fjmp%2Flinux-2.6 diff --git a/fs/reiserfs/super.c b/fs/reiserfs/super.c index 2283f18..1215a4f 100644 --- a/fs/reiserfs/super.c +++ b/fs/reiserfs/super.c @@ -11,7 +11,6 @@ * NO WARRANTY */ -#include #include #include #include @@ -19,15 +18,16 @@ #include #include #include -#include #include #include #include +#include +#include #include -#include +#include #include #include -#include +#include struct file_system_type reiserfs_fs_type; @@ -35,83 +35,83 @@ static const char reiserfs_3_5_magic_string[] = REISERFS_SUPER_MAGIC_STRING; static const char reiserfs_3_6_magic_string[] = REISER2FS_SUPER_MAGIC_STRING; static const char reiserfs_jr_magic_string[] = REISER2FS_JR_SUPER_MAGIC_STRING; -int is_reiserfs_3_5 (struct reiserfs_super_block * rs) +int is_reiserfs_3_5(struct reiserfs_super_block *rs) { - return !strncmp (rs->s_v1.s_magic, reiserfs_3_5_magic_string, - strlen (reiserfs_3_5_magic_string)); + return !strncmp(rs->s_v1.s_magic, reiserfs_3_5_magic_string, + strlen(reiserfs_3_5_magic_string)); } - -int is_reiserfs_3_6 (struct reiserfs_super_block * rs) +int is_reiserfs_3_6(struct reiserfs_super_block *rs) { - return !strncmp (rs->s_v1.s_magic, reiserfs_3_6_magic_string, - strlen (reiserfs_3_6_magic_string)); + return !strncmp(rs->s_v1.s_magic, reiserfs_3_6_magic_string, + strlen(reiserfs_3_6_magic_string)); } - -int is_reiserfs_jr (struct reiserfs_super_block * rs) +int is_reiserfs_jr(struct reiserfs_super_block *rs) { - return !strncmp (rs->s_v1.s_magic, reiserfs_jr_magic_string, - strlen (reiserfs_jr_magic_string)); + return !strncmp(rs->s_v1.s_magic, reiserfs_jr_magic_string, + strlen(reiserfs_jr_magic_string)); } - -static int is_any_reiserfs_magic_string (struct reiserfs_super_block * rs) +static int is_any_reiserfs_magic_string(struct reiserfs_super_block *rs) { - return (is_reiserfs_3_5 (rs) || is_reiserfs_3_6 (rs) || - is_reiserfs_jr (rs)); + return (is_reiserfs_3_5(rs) || is_reiserfs_3_6(rs) || + is_reiserfs_jr(rs)); } -static int reiserfs_remount (struct super_block * s, int * flags, char * data); -static int reiserfs_statfs (struct super_block * s, struct kstatfs * buf); +static int reiserfs_remount(struct super_block *s, int *flags, char *data); +static int reiserfs_statfs(struct dentry *dentry, struct kstatfs *buf); -static int reiserfs_sync_fs (struct super_block * s, int wait) +static int reiserfs_sync_fs(struct super_block *s, int wait) { - if (!(s->s_flags & MS_RDONLY)) { - struct reiserfs_transaction_handle th; - reiserfs_write_lock(s); - if (!journal_begin(&th, s, 1)) - if (!journal_end_sync(&th, s, 1)) - reiserfs_flush_old_commits(s); - s->s_dirt = 0; /* Even if it's not true. - * We'll loop forever in sync_supers otherwise */ - reiserfs_write_unlock(s); - } else { - s->s_dirt = 0; - } - return 0; + if (!(s->s_flags & MS_RDONLY)) { + struct reiserfs_transaction_handle th; + reiserfs_write_lock(s); + if (!journal_begin(&th, s, 1)) + if (!journal_end_sync(&th, s, 1)) + reiserfs_flush_old_commits(s); + s->s_dirt = 0; /* Even if it's not true. + * We'll loop forever in sync_supers otherwise */ + reiserfs_write_unlock(s); + } else { + s->s_dirt = 0; + } + return 0; } static void reiserfs_write_super(struct super_block *s) { - reiserfs_sync_fs(s, 1); + reiserfs_sync_fs(s, 1); } -static void reiserfs_write_super_lockfs (struct super_block * s) +static int reiserfs_freeze(struct super_block *s) { - struct reiserfs_transaction_handle th ; - reiserfs_write_lock(s); - if (!(s->s_flags & MS_RDONLY)) { - int err = journal_begin(&th, s, 1) ; - if (err) { - reiserfs_block_writes(&th) ; - } else { - reiserfs_prepare_for_journal(s, SB_BUFFER_WITH_SB(s), 1); - journal_mark_dirty(&th, s, SB_BUFFER_WITH_SB (s)); - reiserfs_block_writes(&th) ; - journal_end_sync(&th, s, 1) ; - } - } - s->s_dirt = 0; - reiserfs_write_unlock(s); + struct reiserfs_transaction_handle th; + reiserfs_write_lock(s); + if (!(s->s_flags & MS_RDONLY)) { + int err = journal_begin(&th, s, 1); + if (err) { + reiserfs_block_writes(&th); + } else { + reiserfs_prepare_for_journal(s, SB_BUFFER_WITH_SB(s), + 1); + journal_mark_dirty(&th, s, SB_BUFFER_WITH_SB(s)); + reiserfs_block_writes(&th); + journal_end_sync(&th, s, 1); + } + } + s->s_dirt = 0; + reiserfs_write_unlock(s); + return 0; } -static void reiserfs_unlockfs(struct super_block *s) { - reiserfs_allow_writes(s) ; +static int reiserfs_unfreeze(struct super_block *s) +{ + reiserfs_allow_writes(s); + return 0; } -extern const struct in_core_key MAX_IN_CORE_KEY; - +extern const struct in_core_key MAX_IN_CORE_KEY; /* this is used to delete "save link" when there are no items of a file it points to. It can either happen if unlink is completed but @@ -120,362 +120,398 @@ extern const struct in_core_key MAX_IN_CORE_KEY; protecting unlink is bigger that a key lf "save link" which protects truncate), so there left no items to make truncate completion on */ -static int remove_save_link_only (struct super_block * s, struct reiserfs_key * key, int oid_free) +static int remove_save_link_only(struct super_block *s, + struct reiserfs_key *key, int oid_free) { - struct reiserfs_transaction_handle th; - int err; - - /* we are going to do one balancing */ - err = journal_begin (&th, s, JOURNAL_PER_BALANCE_CNT); - if (err) - return err; - - reiserfs_delete_solid_item (&th, NULL, key); - if (oid_free) - /* removals are protected by direct items */ - reiserfs_release_objectid (&th, le32_to_cpu (key->k_objectid)); - - return journal_end (&th, s, JOURNAL_PER_BALANCE_CNT); + struct reiserfs_transaction_handle th; + int err; + + /* we are going to do one balancing */ + err = journal_begin(&th, s, JOURNAL_PER_BALANCE_CNT); + if (err) + return err; + + reiserfs_delete_solid_item(&th, NULL, key); + if (oid_free) + /* removals are protected by direct items */ + reiserfs_release_objectid(&th, le32_to_cpu(key->k_objectid)); + + return journal_end(&th, s, JOURNAL_PER_BALANCE_CNT); } - + #ifdef CONFIG_QUOTA static int reiserfs_quota_on_mount(struct super_block *, int); #endif - + /* look for uncompleted unlinks and truncates and complete them */ -static int finish_unfinished (struct super_block * s) +static int finish_unfinished(struct super_block *s) { - INITIALIZE_PATH (path); - struct cpu_key max_cpu_key, obj_key; - struct reiserfs_key save_link_key; - int retval = 0; - struct item_head * ih; - struct buffer_head * bh; - int item_pos; - char * item; - int done; - struct inode * inode; - int truncate; + INITIALIZE_PATH(path); + struct cpu_key max_cpu_key, obj_key; + struct reiserfs_key save_link_key, last_inode_key; + int retval = 0; + struct item_head *ih; + struct buffer_head *bh; + int item_pos; + char *item; + int done; + struct inode *inode; + int truncate; #ifdef CONFIG_QUOTA - int i; - int ms_active_set; + int i; + int ms_active_set; #endif - - - /* compose key to look for "save" links */ - max_cpu_key.version = KEY_FORMAT_3_5; - max_cpu_key.on_disk_key = MAX_IN_CORE_KEY; - max_cpu_key.key_length = 3; + + /* compose key to look for "save" links */ + max_cpu_key.version = KEY_FORMAT_3_5; + max_cpu_key.on_disk_key.k_dir_id = ~0U; + max_cpu_key.on_disk_key.k_objectid = ~0U; + set_cpu_key_k_offset(&max_cpu_key, ~0U); + max_cpu_key.key_length = 3; + + memset(&last_inode_key, 0, sizeof(last_inode_key)); #ifdef CONFIG_QUOTA - /* Needed for iput() to work correctly and not trash data */ - if (s->s_flags & MS_ACTIVE) { - ms_active_set = 0; - } else { - ms_active_set = 1; - s->s_flags |= MS_ACTIVE; - } - /* Turn on quotas so that they are updated correctly */ - for (i = 0; i < MAXQUOTAS; i++) { - if (REISERFS_SB(s)->s_qf_names[i]) { - int ret = reiserfs_quota_on_mount(s, i); - if (ret < 0) - reiserfs_warning(s, "reiserfs: cannot turn on journalled quota: error %d", ret); - } - } + /* Needed for iput() to work correctly and not trash data */ + if (s->s_flags & MS_ACTIVE) { + ms_active_set = 0; + } else { + ms_active_set = 1; + s->s_flags |= MS_ACTIVE; + } + /* Turn on quotas so that they are updated correctly */ + for (i = 0; i < MAXQUOTAS; i++) { + if (REISERFS_SB(s)->s_qf_names[i]) { + int ret = reiserfs_quota_on_mount(s, i); + if (ret < 0) + reiserfs_warning(s, "reiserfs-2500", + "cannot turn on journaled " + "quota: error %d", ret); + } + } #endif - - done = 0; - REISERFS_SB(s)->s_is_unlinked_ok = 1; - while (!retval) { - retval = search_item (s, &max_cpu_key, &path); - if (retval != ITEM_NOT_FOUND) { - reiserfs_warning (s, "vs-2140: finish_unfinished: search_by_key returned %d", - retval); - break; - } - - bh = get_last_bh (&path); - item_pos = get_item_pos (&path); - if (item_pos != B_NR_ITEMS (bh)) { - reiserfs_warning (s, "vs-2060: finish_unfinished: wrong position found"); - break; - } - item_pos --; - ih = B_N_PITEM_HEAD (bh, item_pos); - - if (le32_to_cpu (ih->ih_key.k_dir_id) != MAX_KEY_OBJECTID) - /* there are no "save" links anymore */ - break; - - save_link_key = ih->ih_key; - if (is_indirect_le_ih (ih)) - truncate = 1; - else - truncate = 0; - - /* reiserfs_iget needs k_dirid and k_objectid only */ - item = B_I_PITEM (bh, ih); - obj_key.on_disk_key.k_dir_id = le32_to_cpu (*(__le32 *)item); - obj_key.on_disk_key.k_objectid = le32_to_cpu (ih->ih_key.k_objectid); - obj_key.on_disk_key.u.k_offset_v1.k_offset = 0; - obj_key.on_disk_key.u.k_offset_v1.k_uniqueness = 0; - - pathrelse (&path); - - inode = reiserfs_iget (s, &obj_key); - if (!inode) { - /* the unlink almost completed, it just did not manage to remove - "save" link and release objectid */ - reiserfs_warning (s, "vs-2180: finish_unfinished: iget failed for %K", - &obj_key); - retval = remove_save_link_only (s, &save_link_key, 1); - continue; - } - - if (!truncate && inode->i_nlink) { - /* file is not unlinked */ - reiserfs_warning (s, "vs-2185: finish_unfinished: file %K is not unlinked", - &obj_key); - retval = remove_save_link_only (s, &save_link_key, 0); - continue; - } - DQUOT_INIT(inode); - - if (truncate && S_ISDIR (inode->i_mode) ) { - /* We got a truncate request for a dir which is impossible. - The only imaginable way is to execute unfinished truncate request - then boot into old kernel, remove the file and create dir with - the same key. */ - reiserfs_warning(s, "green-2101: impossible truncate on a directory %k. Please report", INODE_PKEY (inode)); - retval = remove_save_link_only (s, &save_link_key, 0); - truncate = 0; - iput (inode); - continue; - } - - if (truncate) { - REISERFS_I(inode) -> i_flags |= i_link_saved_truncate_mask; - /* not completed truncate found. New size was committed together - with "save" link */ - reiserfs_info (s, "Truncating %k to %Ld ..", - INODE_PKEY (inode), inode->i_size); - reiserfs_truncate_file (inode, 0/*don't update modification time*/); - retval = remove_save_link (inode, truncate); - } else { - REISERFS_I(inode) -> i_flags |= i_link_saved_unlink_mask; - /* not completed unlink (rmdir) found */ - reiserfs_info (s, "Removing %k..", INODE_PKEY (inode)); - /* removal gets completed in iput */ - retval = 0; - } - - iput (inode); - printk ("done\n"); - done ++; - } - REISERFS_SB(s)->s_is_unlinked_ok = 0; - + + done = 0; + REISERFS_SB(s)->s_is_unlinked_ok = 1; + while (!retval) { + retval = search_item(s, &max_cpu_key, &path); + if (retval != ITEM_NOT_FOUND) { + reiserfs_error(s, "vs-2140", + "search_by_key returned %d", retval); + break; + } + + bh = get_last_bh(&path); + item_pos = get_item_pos(&path); + if (item_pos != B_NR_ITEMS(bh)) { + reiserfs_warning(s, "vs-2060", + "wrong position found"); + break; + } + item_pos--; + ih = B_N_PITEM_HEAD(bh, item_pos); + + if (le32_to_cpu(ih->ih_key.k_dir_id) != MAX_KEY_OBJECTID) + /* there are no "save" links anymore */ + break; + + save_link_key = ih->ih_key; + if (is_indirect_le_ih(ih)) + truncate = 1; + else + truncate = 0; + + /* reiserfs_iget needs k_dirid and k_objectid only */ + item = B_I_PITEM(bh, ih); + obj_key.on_disk_key.k_dir_id = le32_to_cpu(*(__le32 *) item); + obj_key.on_disk_key.k_objectid = + le32_to_cpu(ih->ih_key.k_objectid); + obj_key.on_disk_key.k_offset = 0; + obj_key.on_disk_key.k_type = 0; + + pathrelse(&path); + + inode = reiserfs_iget(s, &obj_key); + if (!inode) { + /* the unlink almost completed, it just did not manage to remove + "save" link and release objectid */ + reiserfs_warning(s, "vs-2180", "iget failed for %K", + &obj_key); + retval = remove_save_link_only(s, &save_link_key, 1); + continue; + } + + if (!truncate && inode->i_nlink) { + /* file is not unlinked */ + reiserfs_warning(s, "vs-2185", + "file %K is not unlinked", + &obj_key); + retval = remove_save_link_only(s, &save_link_key, 0); + continue; + } + vfs_dq_init(inode); + + if (truncate && S_ISDIR(inode->i_mode)) { + /* We got a truncate request for a dir which is impossible. + The only imaginable way is to execute unfinished truncate request + then boot into old kernel, remove the file and create dir with + the same key. */ + reiserfs_warning(s, "green-2101", + "impossible truncate on a " + "directory %k. Please report", + INODE_PKEY(inode)); + retval = remove_save_link_only(s, &save_link_key, 0); + truncate = 0; + iput(inode); + continue; + } + + if (truncate) { + REISERFS_I(inode)->i_flags |= + i_link_saved_truncate_mask; + /* not completed truncate found. New size was committed together + with "save" link */ + reiserfs_info(s, "Truncating %k to %Ld ..", + INODE_PKEY(inode), inode->i_size); + reiserfs_truncate_file(inode, + 0 + /*don't update modification time */ + ); + retval = remove_save_link(inode, truncate); + } else { + REISERFS_I(inode)->i_flags |= i_link_saved_unlink_mask; + /* not completed unlink (rmdir) found */ + reiserfs_info(s, "Removing %k..", INODE_PKEY(inode)); + if (memcmp(&last_inode_key, INODE_PKEY(inode), + sizeof(last_inode_key))){ + last_inode_key = *INODE_PKEY(inode); + /* removal gets completed in iput */ + retval = 0; + } else { + reiserfs_warning(s, "super-2189", "Dead loop " + "in finish_unfinished " + "detected, just remove " + "save link\n"); + retval = remove_save_link_only(s, + &save_link_key, 0); + } + } + + iput(inode); + printk("done\n"); + done++; + } + REISERFS_SB(s)->s_is_unlinked_ok = 0; + #ifdef CONFIG_QUOTA - /* Turn quotas off */ - for (i = 0; i < MAXQUOTAS; i++) { - if (sb_dqopt(s)->files[i]) - vfs_quota_off_mount(s, i); - } - if (ms_active_set) - /* Restore the flag back */ - s->s_flags &= ~MS_ACTIVE; + /* Turn quotas off */ + for (i = 0; i < MAXQUOTAS; i++) { + if (sb_dqopt(s)->files[i]) + vfs_quota_off(s, i, 0); + } + if (ms_active_set) + /* Restore the flag back */ + s->s_flags &= ~MS_ACTIVE; #endif - pathrelse (&path); - if (done) - reiserfs_info (s, "There were %d uncompleted unlinks/truncates. " - "Completed\n", done); - return retval; + pathrelse(&path); + if (done) + reiserfs_info(s, "There were %d uncompleted unlinks/truncates. " + "Completed\n", done); + return retval; } - + /* to protect file being unlinked from getting lost we "safe" link files being unlinked. This link will be deleted in the same transaction with last - item of file. mounting the filesytem we scan all these links and remove + item of file. mounting the filesystem we scan all these links and remove files which almost got lost */ -void add_save_link (struct reiserfs_transaction_handle * th, - struct inode * inode, int truncate) +void add_save_link(struct reiserfs_transaction_handle *th, + struct inode *inode, int truncate) { - INITIALIZE_PATH (path); - int retval; - struct cpu_key key; - struct item_head ih; - __le32 link; - - BUG_ON (!th->t_trans_id); - - /* file can only get one "save link" of each kind */ - RFALSE( truncate && - ( REISERFS_I(inode) -> i_flags & i_link_saved_truncate_mask ), - "saved link already exists for truncated inode %lx", - ( long ) inode -> i_ino ); - RFALSE( !truncate && - ( REISERFS_I(inode) -> i_flags & i_link_saved_unlink_mask ), - "saved link already exists for unlinked inode %lx", - ( long ) inode -> i_ino ); - - /* setup key of "save" link */ - key.version = KEY_FORMAT_3_5; - key.on_disk_key.k_dir_id = MAX_KEY_OBJECTID; - key.on_disk_key.k_objectid = inode->i_ino; - if (!truncate) { - /* unlink, rmdir, rename */ - set_cpu_key_k_offset (&key, 1 + inode->i_sb->s_blocksize); - set_cpu_key_k_type (&key, TYPE_DIRECT); - - /* item head of "safe" link */ - make_le_item_head (&ih, &key, key.version, 1 + inode->i_sb->s_blocksize, TYPE_DIRECT, - 4/*length*/, 0xffff/*free space*/); - } else { - /* truncate */ - if (S_ISDIR (inode->i_mode)) - reiserfs_warning(inode->i_sb, "green-2102: Adding a truncate savelink for a directory %k! Please report", INODE_PKEY(inode)); - set_cpu_key_k_offset (&key, 1); - set_cpu_key_k_type (&key, TYPE_INDIRECT); - - /* item head of "safe" link */ - make_le_item_head (&ih, &key, key.version, 1, TYPE_INDIRECT, - 4/*length*/, 0/*free space*/); - } - key.key_length = 3; - - /* look for its place in the tree */ - retval = search_item (inode->i_sb, &key, &path); - if (retval != ITEM_NOT_FOUND) { - if ( retval != -ENOSPC ) - reiserfs_warning (inode->i_sb, "vs-2100: add_save_link:" - "search_by_key (%K) returned %d", &key, retval); - pathrelse (&path); - return; - } - - /* body of "save" link */ - link = INODE_PKEY (inode)->k_dir_id; - - /* put "save" link inot tree, don't charge quota to anyone */ - retval = reiserfs_insert_item (th, &path, &key, &ih, NULL, (char *)&link); - if (retval) { - if (retval != -ENOSPC) - reiserfs_warning (inode->i_sb, "vs-2120: add_save_link: insert_item returned %d", - retval); - } else { - if( truncate ) - REISERFS_I(inode) -> i_flags |= i_link_saved_truncate_mask; - else - REISERFS_I(inode) -> i_flags |= i_link_saved_unlink_mask; - } -} + INITIALIZE_PATH(path); + int retval; + struct cpu_key key; + struct item_head ih; + __le32 link; + + BUG_ON(!th->t_trans_id); + + /* file can only get one "save link" of each kind */ + RFALSE(truncate && + (REISERFS_I(inode)->i_flags & i_link_saved_truncate_mask), + "saved link already exists for truncated inode %lx", + (long)inode->i_ino); + RFALSE(!truncate && + (REISERFS_I(inode)->i_flags & i_link_saved_unlink_mask), + "saved link already exists for unlinked inode %lx", + (long)inode->i_ino); + + /* setup key of "save" link */ + key.version = KEY_FORMAT_3_5; + key.on_disk_key.k_dir_id = MAX_KEY_OBJECTID; + key.on_disk_key.k_objectid = inode->i_ino; + if (!truncate) { + /* unlink, rmdir, rename */ + set_cpu_key_k_offset(&key, 1 + inode->i_sb->s_blocksize); + set_cpu_key_k_type(&key, TYPE_DIRECT); + + /* item head of "safe" link */ + make_le_item_head(&ih, &key, key.version, + 1 + inode->i_sb->s_blocksize, TYPE_DIRECT, + 4 /*length */ , 0xffff /*free space */ ); + } else { + /* truncate */ + if (S_ISDIR(inode->i_mode)) + reiserfs_warning(inode->i_sb, "green-2102", + "Adding a truncate savelink for " + "a directory %k! Please report", + INODE_PKEY(inode)); + set_cpu_key_k_offset(&key, 1); + set_cpu_key_k_type(&key, TYPE_INDIRECT); + + /* item head of "safe" link */ + make_le_item_head(&ih, &key, key.version, 1, TYPE_INDIRECT, + 4 /*length */ , 0 /*free space */ ); + } + key.key_length = 3; + + /* look for its place in the tree */ + retval = search_item(inode->i_sb, &key, &path); + if (retval != ITEM_NOT_FOUND) { + if (retval != -ENOSPC) + reiserfs_error(inode->i_sb, "vs-2100", + "search_by_key (%K) returned %d", &key, + retval); + pathrelse(&path); + return; + } + + /* body of "save" link */ + link = INODE_PKEY(inode)->k_dir_id; + /* put "save" link inot tree, don't charge quota to anyone */ + retval = + reiserfs_insert_item(th, &path, &key, &ih, NULL, (char *)&link); + if (retval) { + if (retval != -ENOSPC) + reiserfs_error(inode->i_sb, "vs-2120", + "insert_item returned %d", retval); + } else { + if (truncate) + REISERFS_I(inode)->i_flags |= + i_link_saved_truncate_mask; + else + REISERFS_I(inode)->i_flags |= i_link_saved_unlink_mask; + } +} /* this opens transaction unlike add_save_link */ -int remove_save_link (struct inode * inode, int truncate) +int remove_save_link(struct inode *inode, int truncate) { - struct reiserfs_transaction_handle th; - struct reiserfs_key key; - int err; - - /* we are going to do one balancing only */ - err = journal_begin (&th, inode->i_sb, JOURNAL_PER_BALANCE_CNT); - if (err) - return err; - - /* setup key of "save" link */ - key.k_dir_id = cpu_to_le32 (MAX_KEY_OBJECTID); - key.k_objectid = INODE_PKEY (inode)->k_objectid; - if (!truncate) { - /* unlink, rmdir, rename */ - set_le_key_k_offset (KEY_FORMAT_3_5, &key, - 1 + inode->i_sb->s_blocksize); - set_le_key_k_type (KEY_FORMAT_3_5, &key, TYPE_DIRECT); - } else { - /* truncate */ - set_le_key_k_offset (KEY_FORMAT_3_5, &key, 1); - set_le_key_k_type (KEY_FORMAT_3_5, &key, TYPE_INDIRECT); - } - - if( ( truncate && - ( REISERFS_I(inode) -> i_flags & i_link_saved_truncate_mask ) ) || - ( !truncate && - ( REISERFS_I(inode) -> i_flags & i_link_saved_unlink_mask ) ) ) - /* don't take quota bytes from anywhere */ - reiserfs_delete_solid_item (&th, NULL, &key); - if (!truncate) { - reiserfs_release_objectid (&th, inode->i_ino); - REISERFS_I(inode) -> i_flags &= ~i_link_saved_unlink_mask; - } else - REISERFS_I(inode) -> i_flags &= ~i_link_saved_truncate_mask; - - return journal_end (&th, inode->i_sb, JOURNAL_PER_BALANCE_CNT); + struct reiserfs_transaction_handle th; + struct reiserfs_key key; + int err; + + /* we are going to do one balancing only */ + err = journal_begin(&th, inode->i_sb, JOURNAL_PER_BALANCE_CNT); + if (err) + return err; + + /* setup key of "save" link */ + key.k_dir_id = cpu_to_le32(MAX_KEY_OBJECTID); + key.k_objectid = INODE_PKEY(inode)->k_objectid; + if (!truncate) { + /* unlink, rmdir, rename */ + set_le_key_k_offset(KEY_FORMAT_3_5, &key, + 1 + inode->i_sb->s_blocksize); + set_le_key_k_type(KEY_FORMAT_3_5, &key, TYPE_DIRECT); + } else { + /* truncate */ + set_le_key_k_offset(KEY_FORMAT_3_5, &key, 1); + set_le_key_k_type(KEY_FORMAT_3_5, &key, TYPE_INDIRECT); + } + + if ((truncate && + (REISERFS_I(inode)->i_flags & i_link_saved_truncate_mask)) || + (!truncate && + (REISERFS_I(inode)->i_flags & i_link_saved_unlink_mask))) + /* don't take quota bytes from anywhere */ + reiserfs_delete_solid_item(&th, NULL, &key); + if (!truncate) { + reiserfs_release_objectid(&th, inode->i_ino); + REISERFS_I(inode)->i_flags &= ~i_link_saved_unlink_mask; + } else + REISERFS_I(inode)->i_flags &= ~i_link_saved_truncate_mask; + + return journal_end(&th, inode->i_sb, JOURNAL_PER_BALANCE_CNT); } +static void reiserfs_kill_sb(struct super_block *s) +{ + if (REISERFS_SB(s)) { +#ifdef CONFIG_REISERFS_FS_XATTR + if (REISERFS_SB(s)->xattr_root) { + d_invalidate(REISERFS_SB(s)->xattr_root); + dput(REISERFS_SB(s)->xattr_root); + REISERFS_SB(s)->xattr_root = NULL; + } +#endif + if (REISERFS_SB(s)->priv_root) { + d_invalidate(REISERFS_SB(s)->priv_root); + dput(REISERFS_SB(s)->priv_root); + REISERFS_SB(s)->priv_root = NULL; + } + } + + kill_block_super(s); +} -static void reiserfs_put_super (struct super_block * s) +static void reiserfs_put_super(struct super_block *s) { - int i; - struct reiserfs_transaction_handle th ; - th.t_trans_id = 0; - - if (REISERFS_SB(s)->xattr_root) { - d_invalidate (REISERFS_SB(s)->xattr_root); - dput (REISERFS_SB(s)->xattr_root); - } - - if (REISERFS_SB(s)->priv_root) { - d_invalidate (REISERFS_SB(s)->priv_root); - dput (REISERFS_SB(s)->priv_root); - } - - /* change file system state to current state if it was mounted with read-write permissions */ - if (!(s->s_flags & MS_RDONLY)) { - if (!journal_begin(&th, s, 10)) { - reiserfs_prepare_for_journal(s, SB_BUFFER_WITH_SB(s), 1) ; - set_sb_umount_state( SB_DISK_SUPER_BLOCK(s), REISERFS_SB(s)->s_mount_state ); - journal_mark_dirty(&th, s, SB_BUFFER_WITH_SB (s)); - } - } - - /* note, journal_release checks for readonly mount, and can decide not - ** to do a journal_end - */ - journal_release(&th, s) ; - - for (i = 0; i < SB_BMAP_NR (s); i ++) - brelse (SB_AP_BITMAP (s)[i].bh); - - vfree (SB_AP_BITMAP (s)); - - brelse (SB_BUFFER_WITH_SB (s)); - - print_statistics (s); - - if (REISERFS_SB(s)->s_kmallocs != 0) { - reiserfs_warning (s, "vs-2004: reiserfs_put_super: allocated memory left %d", - REISERFS_SB(s)->s_kmallocs); - } - - if (REISERFS_SB(s)->reserved_blocks != 0) { - reiserfs_warning (s, "green-2005: reiserfs_put_super: reserved blocks left %d", - REISERFS_SB(s)->reserved_blocks); - } - - reiserfs_proc_info_done( s ); - - kfree(s->s_fs_info); - s->s_fs_info = NULL; - - return; + struct reiserfs_transaction_handle th; + th.t_trans_id = 0; + + /* change file system state to current state if it was mounted with read-write permissions */ + if (!(s->s_flags & MS_RDONLY)) { + if (!journal_begin(&th, s, 10)) { + reiserfs_prepare_for_journal(s, SB_BUFFER_WITH_SB(s), + 1); + set_sb_umount_state(SB_DISK_SUPER_BLOCK(s), + REISERFS_SB(s)->s_mount_state); + journal_mark_dirty(&th, s, SB_BUFFER_WITH_SB(s)); + } + } + + /* note, journal_release checks for readonly mount, and can decide not + ** to do a journal_end + */ + journal_release(&th, s); + + reiserfs_free_bitmap_cache(s); + + brelse(SB_BUFFER_WITH_SB(s)); + + print_statistics(s); + + if (REISERFS_SB(s)->reserved_blocks != 0) { + reiserfs_warning(s, "green-2005", "reserved blocks left %d", + REISERFS_SB(s)->reserved_blocks); + } + + reiserfs_proc_info_done(s); + + kfree(s->s_fs_info); + s->s_fs_info = NULL; + + return; } -static kmem_cache_t * reiserfs_inode_cachep; +static struct kmem_cache *reiserfs_inode_cachep; static struct inode *reiserfs_alloc_inode(struct super_block *sb) { struct reiserfs_inode_info *ei; - ei = (struct reiserfs_inode_info *)kmem_cache_alloc(reiserfs_inode_cachep, SLAB_KERNEL); + ei = (struct reiserfs_inode_info *) + kmem_cache_alloc(reiserfs_inode_cachep, GFP_KERNEL); if (!ei) return NULL; return &ei->vfs_inode; @@ -486,25 +522,26 @@ static void reiserfs_destroy_inode(struct inode *inode) kmem_cache_free(reiserfs_inode_cachep, REISERFS_I(inode)); } -static void init_once(void * foo, kmem_cache_t * cachep, unsigned long flags) +static void init_once(void *foo) { - struct reiserfs_inode_info *ei = (struct reiserfs_inode_info *) foo; + struct reiserfs_inode_info *ei = (struct reiserfs_inode_info *)foo; - if ((flags & (SLAB_CTOR_VERIFY|SLAB_CTOR_CONSTRUCTOR)) == - SLAB_CTOR_CONSTRUCTOR) { - INIT_LIST_HEAD(&ei->i_prealloc_list) ; - inode_init_once(&ei->vfs_inode); - ei->i_acl_access = NULL; - ei->i_acl_default = NULL; - } + INIT_LIST_HEAD(&ei->i_prealloc_list); + inode_init_once(&ei->vfs_inode); +#ifdef CONFIG_REISERFS_FS_POSIX_ACL + ei->i_acl_access = NULL; + ei->i_acl_default = NULL; +#endif } - + static int init_inodecache(void) { reiserfs_inode_cachep = kmem_cache_create("reiser_inode_cache", - sizeof(struct reiserfs_inode_info), - 0, SLAB_RECLAIM_ACCOUNT, - init_once, NULL); + sizeof(struct + reiserfs_inode_info), + 0, (SLAB_RECLAIM_ACCOUNT| + SLAB_MEM_SPREAD), + init_once); if (reiserfs_inode_cachep == NULL) return -ENOMEM; return 0; @@ -512,132 +549,137 @@ static int init_inodecache(void) static void destroy_inodecache(void) { - if (kmem_cache_destroy(reiserfs_inode_cachep)) - reiserfs_warning (NULL, "reiserfs_inode_cache: not all structures were freed"); + kmem_cache_destroy(reiserfs_inode_cachep); } /* we don't mark inodes dirty, we just log them */ -static void reiserfs_dirty_inode (struct inode * inode) { - struct reiserfs_transaction_handle th ; - - int err = 0; - if (inode->i_sb->s_flags & MS_RDONLY) { - reiserfs_warning(inode->i_sb, "clm-6006: writing inode %lu on readonly FS", - inode->i_ino) ; - return ; - } - reiserfs_write_lock(inode->i_sb); - - /* this is really only used for atime updates, so they don't have - ** to be included in O_SYNC or fsync - */ - err = journal_begin(&th, inode->i_sb, 1) ; - if (err) { - reiserfs_write_unlock (inode->i_sb); - return; - } - reiserfs_update_sd (&th, inode); - journal_end(&th, inode->i_sb, 1) ; - reiserfs_write_unlock(inode->i_sb); +static void reiserfs_dirty_inode(struct inode *inode) +{ + struct reiserfs_transaction_handle th; + + int err = 0; + if (inode->i_sb->s_flags & MS_RDONLY) { + reiserfs_warning(inode->i_sb, "clm-6006", + "writing inode %lu on readonly FS", + inode->i_ino); + return; + } + reiserfs_write_lock(inode->i_sb); + + /* this is really only used for atime updates, so they don't have + ** to be included in O_SYNC or fsync + */ + err = journal_begin(&th, inode->i_sb, 1); + if (err) { + reiserfs_write_unlock(inode->i_sb); + return; + } + reiserfs_update_sd(&th, inode); + journal_end(&th, inode->i_sb, 1); + reiserfs_write_unlock(inode->i_sb); } -static void reiserfs_clear_inode (struct inode *inode) +#ifdef CONFIG_REISERFS_FS_POSIX_ACL +static void reiserfs_clear_inode(struct inode *inode) { - struct posix_acl *acl; + struct posix_acl *acl; - acl = REISERFS_I(inode)->i_acl_access; - if (acl && !IS_ERR (acl)) - posix_acl_release (acl); - REISERFS_I(inode)->i_acl_access = NULL; + acl = REISERFS_I(inode)->i_acl_access; + if (acl && !IS_ERR(acl)) + posix_acl_release(acl); + REISERFS_I(inode)->i_acl_access = NULL; - acl = REISERFS_I(inode)->i_acl_default; - if (acl && !IS_ERR (acl)) - posix_acl_release (acl); - REISERFS_I(inode)->i_acl_default = NULL; + acl = REISERFS_I(inode)->i_acl_default; + if (acl && !IS_ERR(acl)) + posix_acl_release(acl); + REISERFS_I(inode)->i_acl_default = NULL; } +#else +#define reiserfs_clear_inode NULL +#endif #ifdef CONFIG_QUOTA -static ssize_t reiserfs_quota_write(struct super_block *, int, const char *, size_t, loff_t); -static ssize_t reiserfs_quota_read(struct super_block *, int, char *, size_t, loff_t); +static ssize_t reiserfs_quota_write(struct super_block *, int, const char *, + size_t, loff_t); +static ssize_t reiserfs_quota_read(struct super_block *, int, char *, size_t, + loff_t); #endif -static struct super_operations reiserfs_sops = -{ - .alloc_inode = reiserfs_alloc_inode, - .destroy_inode = reiserfs_destroy_inode, - .write_inode = reiserfs_write_inode, - .dirty_inode = reiserfs_dirty_inode, - .delete_inode = reiserfs_delete_inode, - .clear_inode = reiserfs_clear_inode, - .put_super = reiserfs_put_super, - .write_super = reiserfs_write_super, - .sync_fs = reiserfs_sync_fs, - .write_super_lockfs = reiserfs_write_super_lockfs, - .unlockfs = reiserfs_unlockfs, - .statfs = reiserfs_statfs, - .remount_fs = reiserfs_remount, +static const struct super_operations reiserfs_sops = { + .alloc_inode = reiserfs_alloc_inode, + .destroy_inode = reiserfs_destroy_inode, + .write_inode = reiserfs_write_inode, + .dirty_inode = reiserfs_dirty_inode, + .delete_inode = reiserfs_delete_inode, + .clear_inode = reiserfs_clear_inode, + .put_super = reiserfs_put_super, + .write_super = reiserfs_write_super, + .sync_fs = reiserfs_sync_fs, + .freeze_fs = reiserfs_freeze, + .unfreeze_fs = reiserfs_unfreeze, + .statfs = reiserfs_statfs, + .remount_fs = reiserfs_remount, + .show_options = generic_show_options, #ifdef CONFIG_QUOTA - .quota_read = reiserfs_quota_read, - .quota_write = reiserfs_quota_write, + .quota_read = reiserfs_quota_read, + .quota_write = reiserfs_quota_write, #endif }; #ifdef CONFIG_QUOTA #define QTYPE2NAME(t) ((t)==USRQUOTA?"user":"group") -static int reiserfs_dquot_initialize(struct inode *, int); -static int reiserfs_dquot_drop(struct inode *); static int reiserfs_write_dquot(struct dquot *); static int reiserfs_acquire_dquot(struct dquot *); static int reiserfs_release_dquot(struct dquot *); static int reiserfs_mark_dquot_dirty(struct dquot *); static int reiserfs_write_info(struct super_block *, int); -static int reiserfs_quota_on(struct super_block *, int, int, char *); - -static struct dquot_operations reiserfs_quota_operations = -{ - .initialize = reiserfs_dquot_initialize, - .drop = reiserfs_dquot_drop, - .alloc_space = dquot_alloc_space, - .alloc_inode = dquot_alloc_inode, - .free_space = dquot_free_space, - .free_inode = dquot_free_inode, - .transfer = dquot_transfer, - .write_dquot = reiserfs_write_dquot, - .acquire_dquot = reiserfs_acquire_dquot, - .release_dquot = reiserfs_release_dquot, - .mark_dirty = reiserfs_mark_dquot_dirty, - .write_info = reiserfs_write_info, +static int reiserfs_quota_on(struct super_block *, int, int, char *, int); + +static struct dquot_operations reiserfs_quota_operations = { + .initialize = dquot_initialize, + .drop = dquot_drop, + .alloc_space = dquot_alloc_space, + .alloc_inode = dquot_alloc_inode, + .free_space = dquot_free_space, + .free_inode = dquot_free_inode, + .transfer = dquot_transfer, + .write_dquot = reiserfs_write_dquot, + .acquire_dquot = reiserfs_acquire_dquot, + .release_dquot = reiserfs_release_dquot, + .mark_dirty = reiserfs_mark_dquot_dirty, + .write_info = reiserfs_write_info, + .alloc_dquot = dquot_alloc, + .destroy_dquot = dquot_destroy, }; -static struct quotactl_ops reiserfs_qctl_operations = -{ - .quota_on = reiserfs_quota_on, - .quota_off = vfs_quota_off, - .quota_sync = vfs_quota_sync, - .get_info = vfs_get_dqinfo, - .set_info = vfs_set_dqinfo, - .get_dqblk = vfs_get_dqblk, - .set_dqblk = vfs_set_dqblk, +static struct quotactl_ops reiserfs_qctl_operations = { + .quota_on = reiserfs_quota_on, + .quota_off = vfs_quota_off, + .quota_sync = vfs_quota_sync, + .get_info = vfs_get_dqinfo, + .set_info = vfs_set_dqinfo, + .get_dqblk = vfs_get_dqblk, + .set_dqblk = vfs_set_dqblk, }; #endif -static struct export_operations reiserfs_export_ops = { - .encode_fh = reiserfs_encode_fh, - .decode_fh = reiserfs_decode_fh, - .get_parent = reiserfs_get_parent, - .get_dentry = reiserfs_get_dentry, -} ; +static const struct export_operations reiserfs_export_ops = { + .encode_fh = reiserfs_encode_fh, + .fh_to_dentry = reiserfs_fh_to_dentry, + .fh_to_parent = reiserfs_fh_to_parent, + .get_parent = reiserfs_get_parent, +}; /* this struct is used in reiserfs_getopt () for containing the value for those mount options that have values rather than being toggles. */ typedef struct { - char * value; - int setmask; /* bitmask which is to set on mount_options bitmask when this - value is found, 0 is no bits are to be changed. */ - int clrmask; /* bitmask which is to clear on mount_options bitmask when this - value is found, 0 is no bits are to be changed. This is - applied BEFORE setmask */ + char *value; + int setmask; /* bitmask which is to set on mount_options bitmask when this + value is found, 0 is no bits are to be changed. */ + int clrmask; /* bitmask which is to clear on mount_options bitmask when this + value is found, 0 is no bits are to be changed. This is + applied BEFORE setmask */ } arg_desc_t; /* Set this bit in arg_required to allow empty arguments */ @@ -646,1347 +688,1403 @@ typedef struct { /* this struct is used in reiserfs_getopt() for describing the set of reiserfs mount options */ typedef struct { - char * option_name; - int arg_required; /* 0 if argument is not required, not 0 otherwise */ - const arg_desc_t * values; /* list of values accepted by an option */ - int setmask; /* bitmask which is to set on mount_options bitmask when this - value is found, 0 is no bits are to be changed. */ - int clrmask; /* bitmask which is to clear on mount_options bitmask when this - value is found, 0 is no bits are to be changed. This is - applied BEFORE setmask */ + char *option_name; + int arg_required; /* 0 if argument is not required, not 0 otherwise */ + const arg_desc_t *values; /* list of values accepted by an option */ + int setmask; /* bitmask which is to set on mount_options bitmask when this + value is found, 0 is no bits are to be changed. */ + int clrmask; /* bitmask which is to clear on mount_options bitmask when this + value is found, 0 is no bits are to be changed. This is + applied BEFORE setmask */ } opt_desc_t; /* possible values for -o data= */ static const arg_desc_t logging_mode[] = { - {"ordered", 1<arg_required otherwise */ -static int reiserfs_getopt ( struct super_block * s, char ** cur, opt_desc_t * opts, char ** opt_arg, - unsigned long * bit_flags) +static int reiserfs_getopt(struct super_block *s, char **cur, opt_desc_t * opts, + char **opt_arg, unsigned long *bit_flags) { - char * p; - /* foo=bar, - ^ ^ ^ - | | +-- option_end - | +-- arg_start - +-- option_start - */ - const opt_desc_t * opt; - const arg_desc_t * arg; - - - p = *cur; - - /* assume argument cannot contain commas */ - *cur = strchr (p, ','); - if (*cur) { - *(*cur) = '\0'; - (*cur) ++; - } - - if ( !strncmp (p, "alloc=", 6) ) { - /* Ugly special case, probably we should redo options parser so that - it can understand several arguments for some options, also so that - it can fill several bitfields with option values. */ - if ( reiserfs_parse_alloc_options( s, p + 6) ) { - return -1; - } else { - return 0; - } - } - - - /* for every option in the list */ - for (opt = opts; opt->option_name; opt ++) { - if (!strncmp (p, opt->option_name, strlen (opt->option_name))) { - if (bit_flags) { - if (opt->clrmask == (1 << REISERFS_UNSUPPORTED_OPT)) - reiserfs_warning (s, "%s not supported.", p); - else - *bit_flags &= ~opt->clrmask; - if (opt->setmask == (1 << REISERFS_UNSUPPORTED_OPT)) - reiserfs_warning (s, "%s not supported.", p); - else - *bit_flags |= opt->setmask; - } - break; - } - } - if (!opt->option_name) { - reiserfs_warning (s, "unknown mount option \"%s\"", p); - return -1; - } - - p += strlen (opt->option_name); - switch (*p) { - case '=': - if (!opt->arg_required) { - reiserfs_warning (s, "the option \"%s\" does not require an argument", - opt->option_name); - return -1; - } - break; - - case 0: - if (opt->arg_required) { - reiserfs_warning (s, "the option \"%s\" requires an argument", opt->option_name); - return -1; - } - break; - default: - reiserfs_warning (s, "head of option \"%s\" is only correct", opt->option_name); - return -1; - } - - /* move to the argument, or to next option if argument is not required */ - p ++; - - if ( opt->arg_required && !(opt->arg_required & (1<option_name); + char *p; + /* foo=bar, + ^ ^ ^ + | | +-- option_end + | +-- arg_start + +-- option_start + */ + const opt_desc_t *opt; + const arg_desc_t *arg; + + p = *cur; + + /* assume argument cannot contain commas */ + *cur = strchr(p, ','); + if (*cur) { + *(*cur) = '\0'; + (*cur)++; + } + + if (!strncmp(p, "alloc=", 6)) { + /* Ugly special case, probably we should redo options parser so that + it can understand several arguments for some options, also so that + it can fill several bitfields with option values. */ + if (reiserfs_parse_alloc_options(s, p + 6)) { + return -1; + } else { + return 0; + } + } + + /* for every option in the list */ + for (opt = opts; opt->option_name; opt++) { + if (!strncmp(p, opt->option_name, strlen(opt->option_name))) { + if (bit_flags) { + if (opt->clrmask == + (1 << REISERFS_UNSUPPORTED_OPT)) + reiserfs_warning(s, "super-6500", + "%s not supported.\n", + p); + else + *bit_flags &= ~opt->clrmask; + if (opt->setmask == + (1 << REISERFS_UNSUPPORTED_OPT)) + reiserfs_warning(s, "super-6501", + "%s not supported.\n", + p); + else + *bit_flags |= opt->setmask; + } + break; + } + } + if (!opt->option_name) { + reiserfs_warning(s, "super-6502", + "unknown mount option \"%s\"", p); + return -1; + } + + p += strlen(opt->option_name); + switch (*p) { + case '=': + if (!opt->arg_required) { + reiserfs_warning(s, "super-6503", + "the option \"%s\" does not " + "require an argument\n", + opt->option_name); + return -1; + } + break; + + case 0: + if (opt->arg_required) { + reiserfs_warning(s, "super-6504", + "the option \"%s\" requires an " + "argument\n", opt->option_name); + return -1; + } + break; + default: + reiserfs_warning(s, "super-6505", + "head of option \"%s\" is only correct\n", + opt->option_name); + return -1; + } + + /* move to the argument, or to next option if argument is not required */ + p++; + + if (opt->arg_required + && !(opt->arg_required & (1 << REISERFS_OPT_ALLOWEMPTY)) + && !strlen(p)) { + /* this catches "option=," if not allowed */ + reiserfs_warning(s, "super-6506", + "empty argument for \"%s\"\n", + opt->option_name); + return -1; + } + + if (!opt->values) { + /* *=NULLopt_arg contains pointer to argument */ + *opt_arg = p; + return opt->arg_required & ~(1 << REISERFS_OPT_ALLOWEMPTY); + } + + /* values possible for this option are listed in opt->values */ + for (arg = opt->values; arg->value; arg++) { + if (!strcmp(p, arg->value)) { + if (bit_flags) { + *bit_flags &= ~arg->clrmask; + *bit_flags |= arg->setmask; + } + return opt->arg_required; + } + } + + reiserfs_warning(s, "super-6506", + "bad value \"%s\" for option \"%s\"\n", p, + opt->option_name); return -1; - } - - if (!opt->values) { - /* *=NULLopt_arg contains pointer to argument */ - *opt_arg = p; - return opt->arg_required & ~(1<values */ - for (arg = opt->values; arg->value; arg ++) { - if (!strcmp (p, arg->value)) { - if (bit_flags) { - *bit_flags &= ~arg->clrmask; - *bit_flags |= arg->setmask; - } - return opt->arg_required; - } - } - - reiserfs_warning (s, "bad value \"%s\" for option \"%s\"", p, opt->option_name); - return -1; } /* returns 0 if something is wrong in option string, 1 - otherwise */ -static int reiserfs_parse_options (struct super_block * s, char * options, /* string given via mount's -o */ - unsigned long * mount_options, - /* after the parsing phase, contains the - collection of bitflags defining what - mount options were selected. */ - unsigned long * blocks, /* strtol-ed from NNN of resize=NNN */ - char ** jdev_name, - unsigned int * commit_max_age) +static int reiserfs_parse_options(struct super_block *s, char *options, /* string given via mount's -o */ + unsigned long *mount_options, + /* after the parsing phase, contains the + collection of bitflags defining what + mount options were selected. */ + unsigned long *blocks, /* strtol-ed from NNN of resize=NNN */ + char **jdev_name, + unsigned int *commit_max_age, + char **qf_names, + unsigned int *qfmt) { - int c; - char * arg = NULL; - char * pos; - opt_desc_t opts[] = { - /* Compatibility stuff, so that -o notail for old setups still work */ - {"tails", .arg_required = 't', .values = tails}, - {"notail", .clrmask = (1<s_bdev->bd_inode->i_size >> s->s_blocksize_bits; - } else { - *blocks = simple_strtoul (arg, &p, 0); - if (*p != '\0') { - /* NNN does not look like a number */ - reiserfs_warning (s, "reiserfs_parse_options: bad value %s", arg); + {.option_name = "nolog"}, + {"replayonly",.setmask = 1 << REPLAYONLY}, + {"block-allocator",.arg_required = 'a',.values = balloc}, + {"data",.arg_required = 'd',.values = logging_mode}, + {"barrier",.arg_required = 'b',.values = barrier_mode}, + {"resize",.arg_required = 'r',.values = NULL}, + {"jdev",.arg_required = 'j',.values = NULL}, + {"nolargeio",.arg_required = 'w',.values = NULL}, + {"commit",.arg_required = 'c',.values = NULL}, + {"usrquota",.setmask = 1 << REISERFS_QUOTA}, + {"grpquota",.setmask = 1 << REISERFS_QUOTA}, + {"noquota",.clrmask = 1 << REISERFS_QUOTA}, + {"errors",.arg_required = 'e',.values = error_actions}, + {"usrjquota",.arg_required = + 'u' | (1 << REISERFS_OPT_ALLOWEMPTY),.values = NULL}, + {"grpjquota",.arg_required = + 'g' | (1 << REISERFS_OPT_ALLOWEMPTY),.values = NULL}, + {"jqfmt",.arg_required = 'f',.values = NULL}, + {.option_name = NULL} + }; + + *blocks = 0; + if (!options || !*options) + /* use default configuration: create tails, journaling on, no + conversion to newest format */ + return 1; + + for (pos = options; pos;) { + c = reiserfs_getopt(s, &pos, opts, &arg, mount_options); + if (c == -1) + /* wrong option is given */ return 0; - } - } - } - if ( c == 'c' ) { - char *p = NULL; - unsigned long val = simple_strtoul (arg, &p, 0); - /* commit=NNN (time in seconds) */ - if ( *p != '\0' || val >= (unsigned int)-1) { - reiserfs_warning (s, "reiserfs_parse_options: bad value %s", arg); - return 0; + if (c == 'r') { + char *p; + + p = NULL; + /* "resize=NNN" or "resize=auto" */ + + if (!strcmp(arg, "auto")) { + /* From JFS code, to auto-get the size. */ + *blocks = + s->s_bdev->bd_inode->i_size >> s-> + s_blocksize_bits; + } else { + *blocks = simple_strtoul(arg, &p, 0); + if (*p != '\0') { + /* NNN does not look like a number */ + reiserfs_warning(s, "super-6507", + "bad value %s for " + "-oresize\n", arg); + return 0; + } + } } - *commit_max_age = (unsigned int)val; - } - - if ( c == 'w' ) { - char *p=NULL; - int val = simple_strtoul (arg, &p, 0); - if ( *p != '\0') { - reiserfs_warning (s, "reiserfs_parse_options: non-numeric value %s for nolargeio option", arg); - return 0; + if (c == 'c') { + char *p = NULL; + unsigned long val = simple_strtoul(arg, &p, 0); + /* commit=NNN (time in seconds) */ + if (*p != '\0' || val >= (unsigned int)-1) { + reiserfs_warning(s, "super-6508", + "bad value %s for -ocommit\n", + arg); + return 0; + } + *commit_max_age = (unsigned int)val; } - if ( val ) - reiserfs_default_io_size = PAGE_SIZE; - else - reiserfs_default_io_size = 128 * 1024; - } - if (c == 'j') { - if (arg && *arg && jdev_name) { - if ( *jdev_name ) { //Hm, already assigned? - reiserfs_warning (s, "reiserfs_parse_options: journal device was already specified to be %s", *jdev_name); - return 0; + if (c == 'w') { + reiserfs_warning(s, "super-6509", "nolargeio option " + "is no longer supported"); + return 0; } - *jdev_name = arg; - } - } - -#ifdef CONFIG_QUOTA - if (c == 'u' || c == 'g') { - int qtype = c == 'u' ? USRQUOTA : GRPQUOTA; - if (sb_any_quota_enabled(s)) { - reiserfs_warning(s, "reiserfs_parse_options: cannot change journalled quota options when quota turned on."); - return 0; - } - if (*arg) { /* Some filename specified? */ - if (REISERFS_SB(s)->s_qf_names[qtype] && strcmp(REISERFS_SB(s)->s_qf_names[qtype], arg)) { - reiserfs_warning(s, "reiserfs_parse_options: %s quota file already specified.", QTYPE2NAME(qtype)); - return 0; + if (c == 'j') { + if (arg && *arg && jdev_name) { + if (*jdev_name) { //Hm, already assigned? + reiserfs_warning(s, "super-6510", + "journal device was " + "already specified to " + "be %s", *jdev_name); + return 0; + } + *jdev_name = arg; + } } - if (strchr(arg, '/')) { - reiserfs_warning(s, "reiserfs_parse_options: quotafile must be on filesystem root."); - return 0; +#ifdef CONFIG_QUOTA + if (c == 'u' || c == 'g') { + int qtype = c == 'u' ? USRQUOTA : GRPQUOTA; + + if (sb_any_quota_loaded(s) && + (!*arg != !REISERFS_SB(s)->s_qf_names[qtype])) { + reiserfs_warning(s, "super-6511", + "cannot change journaled " + "quota options when quota " + "turned on."); + return 0; + } + if (*arg) { /* Some filename specified? */ + if (REISERFS_SB(s)->s_qf_names[qtype] + && strcmp(REISERFS_SB(s)->s_qf_names[qtype], + arg)) { + reiserfs_warning(s, "super-6512", + "%s quota file " + "already specified.", + QTYPE2NAME(qtype)); + return 0; + } + if (strchr(arg, '/')) { + reiserfs_warning(s, "super-6513", + "quotafile must be " + "on filesystem root."); + return 0; + } + qf_names[qtype] = + kmalloc(strlen(arg) + 1, GFP_KERNEL); + if (!qf_names[qtype]) { + reiserfs_warning(s, "reiserfs-2502", + "not enough memory " + "for storing " + "quotafile name."); + return 0; + } + strcpy(qf_names[qtype], arg); + *mount_options |= 1 << REISERFS_QUOTA; + } else { + if (qf_names[qtype] != + REISERFS_SB(s)->s_qf_names[qtype]) + kfree(qf_names[qtype]); + qf_names[qtype] = NULL; + } } - REISERFS_SB(s)->s_qf_names[qtype] = kmalloc(strlen(arg)+1, GFP_KERNEL); - if (!REISERFS_SB(s)->s_qf_names[qtype]) { - reiserfs_warning(s, "reiserfs_parse_options: not enough memory for storing quotafile name."); - return 0; + if (c == 'f') { + if (!strcmp(arg, "vfsold")) + *qfmt = QFMT_VFS_OLD; + else if (!strcmp(arg, "vfsv0")) + *qfmt = QFMT_VFS_V0; + else { + reiserfs_warning(s, "super-6514", + "unknown quota format " + "specified."); + return 0; + } + if (sb_any_quota_loaded(s) && + *qfmt != REISERFS_SB(s)->s_jquota_fmt) { + reiserfs_warning(s, "super-6515", + "cannot change journaled " + "quota options when quota " + "turned on."); + return 0; + } } - strcpy(REISERFS_SB(s)->s_qf_names[qtype], arg); - } - else { - if (REISERFS_SB(s)->s_qf_names[qtype]) { - kfree(REISERFS_SB(s)->s_qf_names[qtype]); - REISERFS_SB(s)->s_qf_names[qtype] = NULL; +#else + if (c == 'u' || c == 'g' || c == 'f') { + reiserfs_warning(s, "reiserfs-2503", "journaled " + "quota options not supported."); + return 0; } - } - } - if (c == 'f') { - if (!strcmp(arg, "vfsold")) - REISERFS_SB(s)->s_jquota_fmt = QFMT_VFS_OLD; - else if (!strcmp(arg, "vfsv0")) - REISERFS_SB(s)->s_jquota_fmt = QFMT_VFS_V0; - else { - reiserfs_warning(s, "reiserfs_parse_options: unknown quota format specified."); +#endif + } + +#ifdef CONFIG_QUOTA + if (!REISERFS_SB(s)->s_jquota_fmt && !*qfmt + && (qf_names[USRQUOTA] || qf_names[GRPQUOTA])) { + reiserfs_warning(s, "super-6515", + "journaled quota format not specified."); return 0; - } } -#else - if (c == 'u' || c == 'g' || c == 'f') { - reiserfs_warning(s, "reiserfs_parse_options: journalled quota options not supported."); - return 0; + /* This checking is not precise wrt the quota type but for our purposes it is sufficient */ + if (!(*mount_options & (1 << REISERFS_QUOTA)) + && sb_any_quota_loaded(s)) { + reiserfs_warning(s, "super-6516", "quota options must " + "be present when quota is turned on."); + return 0; } #endif - } - -#ifdef CONFIG_QUOTA - if (!REISERFS_SB(s)->s_jquota_fmt && (REISERFS_SB(s)->s_qf_names[USRQUOTA] || REISERFS_SB(s)->s_qf_names[GRPQUOTA])) { - reiserfs_warning(s, "reiserfs_parse_options: journalled quota format not specified."); - return 0; - } -#endif - return 1; + + return 1; } -static void switch_data_mode(struct super_block *s, unsigned long mode) { - REISERFS_SB(s)->s_mount_opt &= ~((1 << REISERFS_DATA_LOG) | - (1 << REISERFS_DATA_ORDERED) | - (1 << REISERFS_DATA_WRITEBACK)); - REISERFS_SB(s)->s_mount_opt |= (1 << mode); +static void switch_data_mode(struct super_block *s, unsigned long mode) +{ + REISERFS_SB(s)->s_mount_opt &= ~((1 << REISERFS_DATA_LOG) | + (1 << REISERFS_DATA_ORDERED) | + (1 << REISERFS_DATA_WRITEBACK)); + REISERFS_SB(s)->s_mount_opt |= (1 << mode); } static void handle_data_mode(struct super_block *s, unsigned long mount_options) { - if (mount_options & (1 << REISERFS_DATA_LOG)) { - if (!reiserfs_data_log(s)) { - switch_data_mode(s, REISERFS_DATA_LOG); - reiserfs_info (s, "switching to journaled data mode\n"); - } - } else if (mount_options & (1 << REISERFS_DATA_ORDERED)) { - if (!reiserfs_data_ordered(s)) { - switch_data_mode(s, REISERFS_DATA_ORDERED); - reiserfs_info (s, "switching to ordered data mode\n"); - } - } else if (mount_options & (1 << REISERFS_DATA_WRITEBACK)) { - if (!reiserfs_data_writeback(s)) { - switch_data_mode(s, REISERFS_DATA_WRITEBACK); - reiserfs_info (s, "switching to writeback data mode\n"); - } - } + if (mount_options & (1 << REISERFS_DATA_LOG)) { + if (!reiserfs_data_log(s)) { + switch_data_mode(s, REISERFS_DATA_LOG); + reiserfs_info(s, "switching to journaled data mode\n"); + } + } else if (mount_options & (1 << REISERFS_DATA_ORDERED)) { + if (!reiserfs_data_ordered(s)) { + switch_data_mode(s, REISERFS_DATA_ORDERED); + reiserfs_info(s, "switching to ordered data mode\n"); + } + } else if (mount_options & (1 << REISERFS_DATA_WRITEBACK)) { + if (!reiserfs_data_writeback(s)) { + switch_data_mode(s, REISERFS_DATA_WRITEBACK); + reiserfs_info(s, "switching to writeback data mode\n"); + } + } } -static void handle_barrier_mode(struct super_block *s, unsigned long bits) { - int flush = (1 << REISERFS_BARRIER_FLUSH); - int none = (1 << REISERFS_BARRIER_NONE); - int all_barrier = flush | none; - - if (bits & all_barrier) { - REISERFS_SB(s)->s_mount_opt &= ~all_barrier; - if (bits & flush) { - REISERFS_SB(s)->s_mount_opt |= flush; - printk("reiserfs: enabling write barrier flush mode\n"); - } else if (bits & none) { - REISERFS_SB(s)->s_mount_opt |= none; - printk("reiserfs: write barriers turned off\n"); - } - } +static void handle_barrier_mode(struct super_block *s, unsigned long bits) +{ + int flush = (1 << REISERFS_BARRIER_FLUSH); + int none = (1 << REISERFS_BARRIER_NONE); + int all_barrier = flush | none; + + if (bits & all_barrier) { + REISERFS_SB(s)->s_mount_opt &= ~all_barrier; + if (bits & flush) { + REISERFS_SB(s)->s_mount_opt |= flush; + printk("reiserfs: enabling write barrier flush mode\n"); + } else if (bits & none) { + REISERFS_SB(s)->s_mount_opt |= none; + printk("reiserfs: write barriers turned off\n"); + } + } } -static void handle_attrs( struct super_block *s ) +static void handle_attrs(struct super_block *s) { - struct reiserfs_super_block * rs; + struct reiserfs_super_block *rs = SB_DISK_SUPER_BLOCK(s); - if( reiserfs_attrs( s ) ) { - rs = SB_DISK_SUPER_BLOCK (s); - if( old_format_only(s) ) { - reiserfs_warning(s, "reiserfs: cannot support attributes on 3.5.x disk format" ); - REISERFS_SB(s) -> s_mount_opt &= ~ ( 1 << REISERFS_ATTRS ); + if (reiserfs_attrs(s)) { + if (old_format_only(s)) { + reiserfs_warning(s, "super-6517", "cannot support " + "attributes on 3.5.x disk format"); + REISERFS_SB(s)->s_mount_opt &= ~(1 << REISERFS_ATTRS); return; } - if( !( le32_to_cpu( rs -> s_flags ) & reiserfs_attrs_cleared ) ) { - reiserfs_warning(s, "reiserfs: cannot support attributes until flag is set in super-block" ); - REISERFS_SB(s) -> s_mount_opt &= ~ ( 1 << REISERFS_ATTRS ); + if (!(le32_to_cpu(rs->s_flags) & reiserfs_attrs_cleared)) { + reiserfs_warning(s, "super-6518", "cannot support " + "attributes until flag is set in " + "super-block"); + REISERFS_SB(s)->s_mount_opt &= ~(1 << REISERFS_ATTRS); } } } -static int reiserfs_remount (struct super_block * s, int * mount_flags, char * arg) +#ifdef CONFIG_QUOTA +static void handle_quota_files(struct super_block *s, char **qf_names, + unsigned int *qfmt) +{ + int i; + + for (i = 0; i < MAXQUOTAS; i++) { + if (qf_names[i] != REISERFS_SB(s)->s_qf_names[i]) + kfree(REISERFS_SB(s)->s_qf_names[i]); + REISERFS_SB(s)->s_qf_names[i] = qf_names[i]; + } + REISERFS_SB(s)->s_jquota_fmt = *qfmt; +} +#endif + +static int reiserfs_remount(struct super_block *s, int *mount_flags, char *arg) { - struct reiserfs_super_block * rs; - struct reiserfs_transaction_handle th ; - unsigned long blocks; - unsigned long mount_options = REISERFS_SB(s)->s_mount_opt; - unsigned long safe_mask = 0; - unsigned int commit_max_age = (unsigned int)-1; - struct reiserfs_journal *journal = SB_JOURNAL(s); - int err; + struct reiserfs_super_block *rs; + struct reiserfs_transaction_handle th; + unsigned long blocks; + unsigned long mount_options = REISERFS_SB(s)->s_mount_opt; + unsigned long safe_mask = 0; + unsigned int commit_max_age = (unsigned int)-1; + struct reiserfs_journal *journal = SB_JOURNAL(s); + char *new_opts = kstrdup(arg, GFP_KERNEL); + int err; + char *qf_names[MAXQUOTAS]; + unsigned int qfmt = 0; #ifdef CONFIG_QUOTA - int i; + int i; + + memcpy(qf_names, REISERFS_SB(s)->s_qf_names, sizeof(qf_names)); #endif - rs = SB_DISK_SUPER_BLOCK (s); + rs = SB_DISK_SUPER_BLOCK(s); - if (!reiserfs_parse_options(s, arg, &mount_options, &blocks, NULL, &commit_max_age)) { + if (!reiserfs_parse_options + (s, arg, &mount_options, &blocks, NULL, &commit_max_age, + qf_names, &qfmt)) { #ifdef CONFIG_QUOTA - for (i = 0; i < MAXQUOTAS; i++) - if (REISERFS_SB(s)->s_qf_names[i]) { - kfree(REISERFS_SB(s)->s_qf_names[i]); - REISERFS_SB(s)->s_qf_names[i] = NULL; + for (i = 0; i < MAXQUOTAS; i++) + if (qf_names[i] != REISERFS_SB(s)->s_qf_names[i]) + kfree(qf_names[i]); +#endif + err = -EINVAL; + goto out_err; } +#ifdef CONFIG_QUOTA + handle_quota_files(s, qf_names, &qfmt); #endif - return -EINVAL; - } - - handle_attrs(s); - - /* Add options that are safe here */ - safe_mask |= 1 << REISERFS_SMALLTAIL; - safe_mask |= 1 << REISERFS_LARGETAIL; - safe_mask |= 1 << REISERFS_NO_BORDER; - safe_mask |= 1 << REISERFS_NO_UNHASHED_RELOCATION; - safe_mask |= 1 << REISERFS_HASHED_RELOCATION; - safe_mask |= 1 << REISERFS_TEST4; - safe_mask |= 1 << REISERFS_ATTRS; - safe_mask |= 1 << REISERFS_XATTRS_USER; - safe_mask |= 1 << REISERFS_POSIXACL; - safe_mask |= 1 << REISERFS_BARRIER_FLUSH; - safe_mask |= 1 << REISERFS_BARRIER_NONE; - safe_mask |= 1 << REISERFS_ERROR_RO; - safe_mask |= 1 << REISERFS_ERROR_CONTINUE; - safe_mask |= 1 << REISERFS_ERROR_PANIC; - - /* Update the bitmask, taking care to keep - * the bits we're not allowed to change here */ - REISERFS_SB(s)->s_mount_opt = (REISERFS_SB(s)->s_mount_opt & ~safe_mask) | (mount_options & safe_mask); - - if(commit_max_age != 0 && commit_max_age != (unsigned int)-1) { - journal->j_max_commit_age = commit_max_age; - journal->j_max_trans_age = commit_max_age; - } - else if(commit_max_age == 0) - { - /* 0 means restore defaults. */ - journal->j_max_commit_age = journal->j_default_max_commit_age; - journal->j_max_trans_age = JOURNAL_MAX_TRANS_AGE; - } - - if(blocks) { - int rc = reiserfs_resize(s, blocks); - if (rc != 0) - return rc; - } - - if (*mount_flags & MS_RDONLY) { - reiserfs_xattr_init (s, *mount_flags); - /* remount read-only */ - if (s->s_flags & MS_RDONLY) - /* it is read-only already */ - return 0; - /* try to remount file system with read-only permissions */ - if (sb_umount_state(rs) == REISERFS_VALID_FS || REISERFS_SB(s)->s_mount_state != REISERFS_VALID_FS) { - return 0; - } - - err = journal_begin(&th, s, 10) ; - if (err) - return err; - - /* Mounting a rw partition read-only. */ - reiserfs_prepare_for_journal(s, SB_BUFFER_WITH_SB(s), 1) ; - set_sb_umount_state( rs, REISERFS_SB(s)->s_mount_state ); - journal_mark_dirty(&th, s, SB_BUFFER_WITH_SB (s)); - } else { - /* remount read-write */ - if (!(s->s_flags & MS_RDONLY)) { - reiserfs_xattr_init (s, *mount_flags); - return 0; /* We are read-write already */ - } - - if (reiserfs_is_journal_aborted (journal)) - return journal->j_errno; - - handle_data_mode(s, mount_options); - handle_barrier_mode(s, mount_options); - REISERFS_SB(s)->s_mount_state = sb_umount_state(rs) ; - s->s_flags &= ~MS_RDONLY ; /* now it is safe to call journal_begin */ - err = journal_begin(&th, s, 10) ; - if (err) - return err; - - /* Mount a partition which is read-only, read-write */ - reiserfs_prepare_for_journal(s, SB_BUFFER_WITH_SB(s), 1) ; - REISERFS_SB(s)->s_mount_state = sb_umount_state(rs); - s->s_flags &= ~MS_RDONLY; - set_sb_umount_state( rs, REISERFS_ERROR_FS ); - /* mark_buffer_dirty (SB_BUFFER_WITH_SB (s), 1); */ - journal_mark_dirty(&th, s, SB_BUFFER_WITH_SB (s)); - REISERFS_SB(s)->s_mount_state = REISERFS_VALID_FS ; - } - /* this will force a full flush of all journal lists */ - SB_JOURNAL(s)->j_must_wait = 1 ; - err = journal_end(&th, s, 10) ; - if (err) - return err; - s->s_dirt = 0; - - if (!( *mount_flags & MS_RDONLY ) ) { - finish_unfinished( s ); - reiserfs_xattr_init (s, *mount_flags); - } - - return 0; -} -/* load_bitmap_info_data - Sets up the reiserfs_bitmap_info structure from disk. - * @sb - superblock for this filesystem - * @bi - the bitmap info to be loaded. Requires that bi->bh is valid. - * - * This routine counts how many free bits there are, finding the first zero - * as a side effect. Could also be implemented as a loop of test_bit() calls, or - * a loop of find_first_zero_bit() calls. This implementation is similar to - * find_first_zero_bit(), but doesn't return after it finds the first bit. - * Should only be called on fs mount, but should be fairly efficient anyways. - * - * bi->first_zero_hint is considered unset if it == 0, since the bitmap itself - * will * invariably occupt block 0 represented in the bitmap. The only - * exception to this is when free_count also == 0, since there will be no - * free blocks at all. - */ + handle_attrs(s); + + /* Add options that are safe here */ + safe_mask |= 1 << REISERFS_SMALLTAIL; + safe_mask |= 1 << REISERFS_LARGETAIL; + safe_mask |= 1 << REISERFS_NO_BORDER; + safe_mask |= 1 << REISERFS_NO_UNHASHED_RELOCATION; + safe_mask |= 1 << REISERFS_HASHED_RELOCATION; + safe_mask |= 1 << REISERFS_TEST4; + safe_mask |= 1 << REISERFS_ATTRS; + safe_mask |= 1 << REISERFS_XATTRS_USER; + safe_mask |= 1 << REISERFS_POSIXACL; + safe_mask |= 1 << REISERFS_BARRIER_FLUSH; + safe_mask |= 1 << REISERFS_BARRIER_NONE; + safe_mask |= 1 << REISERFS_ERROR_RO; + safe_mask |= 1 << REISERFS_ERROR_CONTINUE; + safe_mask |= 1 << REISERFS_ERROR_PANIC; + safe_mask |= 1 << REISERFS_QUOTA; + + /* Update the bitmask, taking care to keep + * the bits we're not allowed to change here */ + REISERFS_SB(s)->s_mount_opt = + (REISERFS_SB(s)-> + s_mount_opt & ~safe_mask) | (mount_options & safe_mask); + + if (commit_max_age != 0 && commit_max_age != (unsigned int)-1) { + journal->j_max_commit_age = commit_max_age; + journal->j_max_trans_age = commit_max_age; + } else if (commit_max_age == 0) { + /* 0 means restore defaults. */ + journal->j_max_commit_age = journal->j_default_max_commit_age; + journal->j_max_trans_age = JOURNAL_MAX_TRANS_AGE; + } -static void load_bitmap_info_data (struct super_block *sb, - struct reiserfs_bitmap_info *bi) -{ - unsigned long *cur = (unsigned long *)bi->bh->b_data; - - while ((char *)cur < (bi->bh->b_data + sb->s_blocksize)) { - - /* No need to scan if all 0's or all 1's. - * Since we're only counting 0's, we can simply ignore all 1's */ - if (*cur == 0) { - if (bi->first_zero_hint == 0) { - bi->first_zero_hint = ((char *)cur - bi->bh->b_data) << 3; - } - bi->free_count += sizeof(unsigned long)*8; - } else if (*cur != ~0L) { - int b; - for (b = 0; b < sizeof(unsigned long)*8; b++) { - if (!reiserfs_test_le_bit (b, cur)) { - bi->free_count ++; - if (bi->first_zero_hint == 0) - bi->first_zero_hint = - (((char *)cur - bi->bh->b_data) << 3) + b; - } + if (blocks) { + err = reiserfs_resize(s, blocks); + if (err != 0) + goto out_err; + } + + if (*mount_flags & MS_RDONLY) { + reiserfs_xattr_init(s, *mount_flags); + /* remount read-only */ + if (s->s_flags & MS_RDONLY) + /* it is read-only already */ + goto out_ok; + /* try to remount file system with read-only permissions */ + if (sb_umount_state(rs) == REISERFS_VALID_FS + || REISERFS_SB(s)->s_mount_state != REISERFS_VALID_FS) { + goto out_ok; } - } - cur ++; - } -#ifdef CONFIG_REISERFS_CHECK -// This outputs a lot of unneded info on big FSes -// reiserfs_warning ("bitmap loaded from block %d: %d free blocks", -// bi->bh->b_blocknr, bi->free_count); -#endif -} - -static int read_bitmaps (struct super_block * s) -{ - int i, bmap_nr; + err = journal_begin(&th, s, 10); + if (err) + goto out_err; - SB_AP_BITMAP (s) = vmalloc (sizeof (struct reiserfs_bitmap_info) * SB_BMAP_NR(s)); - if (SB_AP_BITMAP (s) == 0) - return 1; - memset (SB_AP_BITMAP (s), 0, sizeof (struct reiserfs_bitmap_info) * SB_BMAP_NR(s)); - for (i = 0, bmap_nr = REISERFS_DISK_OFFSET_IN_BYTES / s->s_blocksize + 1; - i < SB_BMAP_NR(s); i++, bmap_nr = s->s_blocksize * 8 * i) { - SB_AP_BITMAP (s)[i].bh = sb_getblk(s, bmap_nr); - if (!buffer_uptodate(SB_AP_BITMAP(s)[i].bh)) - ll_rw_block(READ, 1, &SB_AP_BITMAP(s)[i].bh); - } - for (i = 0; i < SB_BMAP_NR(s); i++) { - wait_on_buffer(SB_AP_BITMAP (s)[i].bh); - if (!buffer_uptodate(SB_AP_BITMAP(s)[i].bh)) { - reiserfs_warning(s,"sh-2029: reiserfs read_bitmaps: " - "bitmap block (#%lu) reading failed", - SB_AP_BITMAP(s)[i].bh->b_blocknr); - for (i = 0; i < SB_BMAP_NR(s); i++) - brelse(SB_AP_BITMAP(s)[i].bh); - vfree(SB_AP_BITMAP(s)); - SB_AP_BITMAP(s) = NULL; - return 1; - } - load_bitmap_info_data (s, SB_AP_BITMAP (s) + i); - } - return 0; -} + /* Mounting a rw partition read-only. */ + reiserfs_prepare_for_journal(s, SB_BUFFER_WITH_SB(s), 1); + set_sb_umount_state(rs, REISERFS_SB(s)->s_mount_state); + journal_mark_dirty(&th, s, SB_BUFFER_WITH_SB(s)); + } else { + /* remount read-write */ + if (!(s->s_flags & MS_RDONLY)) { + reiserfs_xattr_init(s, *mount_flags); + goto out_ok; /* We are read-write already */ + } -static int read_old_bitmaps (struct super_block * s) -{ - int i ; - struct reiserfs_super_block * rs = SB_DISK_SUPER_BLOCK(s); - int bmp1 = (REISERFS_OLD_DISK_OFFSET_IN_BYTES / s->s_blocksize) + 1; /* first of bitmap blocks */ + if (reiserfs_is_journal_aborted(journal)) { + err = journal->j_errno; + goto out_err; + } - /* read true bitmap */ - SB_AP_BITMAP (s) = vmalloc (sizeof (struct reiserfs_buffer_info *) * sb_bmap_nr(rs)); - if (SB_AP_BITMAP (s) == 0) - return 1; + handle_data_mode(s, mount_options); + handle_barrier_mode(s, mount_options); + REISERFS_SB(s)->s_mount_state = sb_umount_state(rs); + s->s_flags &= ~MS_RDONLY; /* now it is safe to call journal_begin */ + err = journal_begin(&th, s, 10); + if (err) + goto out_err; + + /* Mount a partition which is read-only, read-write */ + reiserfs_prepare_for_journal(s, SB_BUFFER_WITH_SB(s), 1); + REISERFS_SB(s)->s_mount_state = sb_umount_state(rs); + s->s_flags &= ~MS_RDONLY; + set_sb_umount_state(rs, REISERFS_ERROR_FS); + if (!old_format_only(s)) + set_sb_mnt_count(rs, sb_mnt_count(rs) + 1); + /* mark_buffer_dirty (SB_BUFFER_WITH_SB (s), 1); */ + journal_mark_dirty(&th, s, SB_BUFFER_WITH_SB(s)); + REISERFS_SB(s)->s_mount_state = REISERFS_VALID_FS; + } + /* this will force a full flush of all journal lists */ + SB_JOURNAL(s)->j_must_wait = 1; + err = journal_end(&th, s, 10); + if (err) + goto out_err; + s->s_dirt = 0; - memset (SB_AP_BITMAP (s), 0, sizeof (struct reiserfs_buffer_info *) * sb_bmap_nr(rs)); + if (!(*mount_flags & MS_RDONLY)) { + finish_unfinished(s); + reiserfs_xattr_init(s, *mount_flags); + } - for (i = 0; i < sb_bmap_nr(rs); i ++) { - SB_AP_BITMAP (s)[i].bh = sb_bread (s, bmp1 + i); - if (!SB_AP_BITMAP (s)[i].bh) - return 1; - load_bitmap_info_data (s, SB_AP_BITMAP (s) + i); - } +out_ok: + replace_mount_options(s, new_opts); + return 0; - return 0; +out_err: + kfree(new_opts); + return err; } -static int read_super_block (struct super_block * s, int offset) +static int read_super_block(struct super_block *s, int offset) { - struct buffer_head * bh; - struct reiserfs_super_block * rs; - int fs_blocksize; - - - bh = sb_bread (s, offset / s->s_blocksize); - if (!bh) { - reiserfs_warning (s, "sh-2006: read_super_block: " - "bread failed (dev %s, block %lu, size %lu)", - reiserfs_bdevname (s), offset / s->s_blocksize, s->s_blocksize); - return 1; - } - - rs = (struct reiserfs_super_block *)bh->b_data; - if (!is_any_reiserfs_magic_string (rs)) { - brelse (bh); - return 1; - } - - // - // ok, reiserfs signature (old or new) found in at the given offset - // - fs_blocksize = sb_blocksize(rs); - brelse (bh); - sb_set_blocksize (s, fs_blocksize); - - bh = sb_bread (s, offset / s->s_blocksize); - if (!bh) { - reiserfs_warning (s, "sh-2007: read_super_block: " - "bread failed (dev %s, block %lu, size %lu)\n", - reiserfs_bdevname (s), offset / s->s_blocksize, s->s_blocksize); - return 1; - } - - rs = (struct reiserfs_super_block *)bh->b_data; - if (sb_blocksize(rs) != s->s_blocksize) { - reiserfs_warning (s, "sh-2011: read_super_block: " - "can't find a reiserfs filesystem on (dev %s, block %Lu, size %lu)\n", - reiserfs_bdevname (s), (unsigned long long)bh->b_blocknr, s->s_blocksize); - brelse (bh); - return 1; - } - - if ( rs->s_v1.s_root_block == cpu_to_le32(-1) ) { - brelse(bh) ; - reiserfs_warning (s, "Unfinished reiserfsck --rebuild-tree run detected. Please run\n" - "reiserfsck --rebuild-tree and wait for a completion. If that fails\n" - "get newer reiserfsprogs package"); - return 1; - } - - SB_BUFFER_WITH_SB (s) = bh; - SB_DISK_SUPER_BLOCK (s) = rs; - - if (is_reiserfs_jr (rs)) { - /* magic is of non-standard journal filesystem, look at s_version to - find which format is in use */ - if (sb_version(rs) == REISERFS_VERSION_2) - reiserfs_warning (s, "read_super_block: found reiserfs format \"3.6\"" - " with non-standard journal"); - else if (sb_version(rs) == REISERFS_VERSION_1) - reiserfs_warning (s, "read_super_block: found reiserfs format \"3.5\"" - " with non-standard journal"); - else { - reiserfs_warning (s, "sh-2012: read_super_block: found unknown " - "format \"%u\" of reiserfs with non-standard magic", - sb_version(rs)); - return 1; + struct buffer_head *bh; + struct reiserfs_super_block *rs; + int fs_blocksize; + + bh = sb_bread(s, offset / s->s_blocksize); + if (!bh) { + reiserfs_warning(s, "sh-2006", + "bread failed (dev %s, block %lu, size %lu)", + reiserfs_bdevname(s), offset / s->s_blocksize, + s->s_blocksize); + return 1; + } + + rs = (struct reiserfs_super_block *)bh->b_data; + if (!is_any_reiserfs_magic_string(rs)) { + brelse(bh); + return 1; + } + // + // ok, reiserfs signature (old or new) found in at the given offset + // + fs_blocksize = sb_blocksize(rs); + brelse(bh); + sb_set_blocksize(s, fs_blocksize); + + bh = sb_bread(s, offset / s->s_blocksize); + if (!bh) { + reiserfs_warning(s, "sh-2007", + "bread failed (dev %s, block %lu, size %lu)", + reiserfs_bdevname(s), offset / s->s_blocksize, + s->s_blocksize); + return 1; + } + + rs = (struct reiserfs_super_block *)bh->b_data; + if (sb_blocksize(rs) != s->s_blocksize) { + reiserfs_warning(s, "sh-2011", "can't find a reiserfs " + "filesystem on (dev %s, block %Lu, size %lu)", + reiserfs_bdevname(s), + (unsigned long long)bh->b_blocknr, + s->s_blocksize); + brelse(bh); + return 1; + } + + if (rs->s_v1.s_root_block == cpu_to_le32(-1)) { + brelse(bh); + reiserfs_warning(s, "super-6519", "Unfinished reiserfsck " + "--rebuild-tree run detected. Please run\n" + "reiserfsck --rebuild-tree and wait for a " + "completion. If that fails\n" + "get newer reiserfsprogs package"); + return 1; } - } - else - /* s_version of standard format may contain incorrect information, - so we just look at the magic string */ - reiserfs_info (s, "found reiserfs format \"%s\" with standard journal\n", - is_reiserfs_3_5 (rs) ? "3.5" : "3.6"); - s->s_op = &reiserfs_sops; - s->s_export_op = &reiserfs_export_ops; + SB_BUFFER_WITH_SB(s) = bh; + SB_DISK_SUPER_BLOCK(s) = rs; + + if (is_reiserfs_jr(rs)) { + /* magic is of non-standard journal filesystem, look at s_version to + find which format is in use */ + if (sb_version(rs) == REISERFS_VERSION_2) + reiserfs_info(s, "found reiserfs format \"3.6\"" + " with non-standard journal\n"); + else if (sb_version(rs) == REISERFS_VERSION_1) + reiserfs_info(s, "found reiserfs format \"3.5\"" + " with non-standard journal\n"); + else { + reiserfs_warning(s, "sh-2012", "found unknown " + "format \"%u\" of reiserfs with " + "non-standard magic", sb_version(rs)); + return 1; + } + } else + /* s_version of standard format may contain incorrect information, + so we just look at the magic string */ + reiserfs_info(s, + "found reiserfs format \"%s\" with standard journal\n", + is_reiserfs_3_5(rs) ? "3.5" : "3.6"); + + s->s_op = &reiserfs_sops; + s->s_export_op = &reiserfs_export_ops; #ifdef CONFIG_QUOTA - s->s_qcop = &reiserfs_qctl_operations; - s->dq_op = &reiserfs_quota_operations; + s->s_qcop = &reiserfs_qctl_operations; + s->dq_op = &reiserfs_quota_operations; #endif - /* new format is limited by the 32 bit wide i_blocks field, want to - ** be one full block below that. - */ - s->s_maxbytes = (512LL << 32) - s->s_blocksize ; - return 0; + /* new format is limited by the 32 bit wide i_blocks field, want to + ** be one full block below that. + */ + s->s_maxbytes = (512LL << 32) - s->s_blocksize; + return 0; } - - /* after journal replay, reread all bitmap and super blocks */ -static int reread_meta_blocks(struct super_block *s) { - int i ; - ll_rw_block(READ, 1, &(SB_BUFFER_WITH_SB(s))) ; - wait_on_buffer(SB_BUFFER_WITH_SB(s)) ; - if (!buffer_uptodate(SB_BUFFER_WITH_SB(s))) { - reiserfs_warning (s, "reread_meta_blocks, error reading the super") ; - return 1 ; - } - - for (i = 0; i < SB_BMAP_NR(s) ; i++) { - ll_rw_block(READ, 1, &(SB_AP_BITMAP(s)[i].bh)) ; - wait_on_buffer(SB_AP_BITMAP(s)[i].bh) ; - if (!buffer_uptodate(SB_AP_BITMAP(s)[i].bh)) { - reiserfs_warning (s, "reread_meta_blocks, error reading bitmap block number %d at %llu", - i, (unsigned long long)SB_AP_BITMAP(s)[i].bh->b_blocknr) ; - return 1 ; - } - } - return 0 ; +static int reread_meta_blocks(struct super_block *s) +{ + ll_rw_block(READ, 1, &(SB_BUFFER_WITH_SB(s))); + wait_on_buffer(SB_BUFFER_WITH_SB(s)); + if (!buffer_uptodate(SB_BUFFER_WITH_SB(s))) { + reiserfs_warning(s, "reiserfs-2504", "error reading the super"); + return 1; + } + return 0; } - ///////////////////////////////////////////////////// // hash detection stuff - // if root directory is empty - we set default - Yura's - hash and // warn about it // FIXME: we look for only one name in a directory. If tea and yura // bith have the same value - we ask user to send report to the // mailing list -static __u32 find_hash_out (struct super_block * s) +static __u32 find_hash_out(struct super_block *s) { - int retval; - struct inode * inode; - struct cpu_key key; - INITIALIZE_PATH (path); - struct reiserfs_dir_entry de; - __u32 hash = DEFAULT_HASH; - - inode = s->s_root->d_inode; - - do { // Some serious "goto"-hater was there ;) - u32 teahash, r5hash, yurahash; - - make_cpu_key (&key, inode, ~0, TYPE_DIRENTRY, 3); - retval = search_by_entry_key (s, &key, &path, &de); - if (retval == IO_ERROR) { - pathrelse (&path); - return UNSET_HASH ; - } - if (retval == NAME_NOT_FOUND) - de.de_entry_num --; - set_de_name_and_namelen (&de); - if (deh_offset( &(de.de_deh[de.de_entry_num]) ) == DOT_DOT_OFFSET) { - /* allow override in this case */ - if (reiserfs_rupasov_hash(s)) { - hash = YURA_HASH ; - } - reiserfs_warning(s,"FS seems to be empty, autodetect " - "is using the default hash"); - break; - } - r5hash=GET_HASH_VALUE (r5_hash (de.de_name, de.de_namelen)); - teahash=GET_HASH_VALUE (keyed_hash (de.de_name, de.de_namelen)); - yurahash=GET_HASH_VALUE (yura_hash (de.de_name, de.de_namelen)); - if ( ( (teahash == r5hash) && (GET_HASH_VALUE( deh_offset(&(de.de_deh[de.de_entry_num]))) == r5hash) ) || - ( (teahash == yurahash) && (yurahash == GET_HASH_VALUE( deh_offset(&(de.de_deh[de.de_entry_num])))) ) || - ( (r5hash == yurahash) && (yurahash == GET_HASH_VALUE( deh_offset(&(de.de_deh[de.de_entry_num])))) ) ) { - reiserfs_warning(s,"Unable to automatically detect hash function. " - "Please mount with -o hash={tea,rupasov,r5}", - reiserfs_bdevname (s)); - hash = UNSET_HASH; - break; - } - if (GET_HASH_VALUE( deh_offset(&(de.de_deh[de.de_entry_num])) ) == yurahash) - hash = YURA_HASH; - else if (GET_HASH_VALUE( deh_offset(&(de.de_deh[de.de_entry_num])) ) == teahash) - hash = TEA_HASH; - else if (GET_HASH_VALUE( deh_offset(&(de.de_deh[de.de_entry_num])) ) == r5hash) - hash = R5_HASH; - else { - reiserfs_warning (s,"Unrecognised hash function"); - hash = UNSET_HASH; - } - } while (0); - - pathrelse (&path); - return hash; + int retval; + struct inode *inode; + struct cpu_key key; + INITIALIZE_PATH(path); + struct reiserfs_dir_entry de; + __u32 hash = DEFAULT_HASH; + + inode = s->s_root->d_inode; + + do { // Some serious "goto"-hater was there ;) + u32 teahash, r5hash, yurahash; + + make_cpu_key(&key, inode, ~0, TYPE_DIRENTRY, 3); + retval = search_by_entry_key(s, &key, &path, &de); + if (retval == IO_ERROR) { + pathrelse(&path); + return UNSET_HASH; + } + if (retval == NAME_NOT_FOUND) + de.de_entry_num--; + set_de_name_and_namelen(&de); + if (deh_offset(&(de.de_deh[de.de_entry_num])) == DOT_DOT_OFFSET) { + /* allow override in this case */ + if (reiserfs_rupasov_hash(s)) { + hash = YURA_HASH; + } + reiserfs_info(s, "FS seems to be empty, autodetect " + "is using the default hash\n"); + break; + } + r5hash = GET_HASH_VALUE(r5_hash(de.de_name, de.de_namelen)); + teahash = GET_HASH_VALUE(keyed_hash(de.de_name, de.de_namelen)); + yurahash = GET_HASH_VALUE(yura_hash(de.de_name, de.de_namelen)); + if (((teahash == r5hash) + && + (GET_HASH_VALUE(deh_offset(&(de.de_deh[de.de_entry_num]))) + == r5hash)) || ((teahash == yurahash) + && (yurahash == + GET_HASH_VALUE(deh_offset + (& + (de. + de_deh[de. + de_entry_num]))))) + || ((r5hash == yurahash) + && (yurahash == + GET_HASH_VALUE(deh_offset + (&(de.de_deh[de.de_entry_num])))))) { + reiserfs_warning(s, "reiserfs-2506", "Unable to " + "automatically detect hash function. " + "Please mount with -o " + "hash={tea,rupasov,r5}"); + hash = UNSET_HASH; + break; + } + if (GET_HASH_VALUE(deh_offset(&(de.de_deh[de.de_entry_num]))) == + yurahash) + hash = YURA_HASH; + else if (GET_HASH_VALUE + (deh_offset(&(de.de_deh[de.de_entry_num]))) == teahash) + hash = TEA_HASH; + else if (GET_HASH_VALUE + (deh_offset(&(de.de_deh[de.de_entry_num]))) == r5hash) + hash = R5_HASH; + else { + reiserfs_warning(s, "reiserfs-2506", + "Unrecognised hash function"); + hash = UNSET_HASH; + } + } while (0); + + pathrelse(&path); + return hash; } // finds out which hash names are sorted with -static int what_hash (struct super_block * s) +static int what_hash(struct super_block *s) { - __u32 code; - - code = sb_hash_function_code(SB_DISK_SUPER_BLOCK(s)); - - /* reiserfs_hash_detect() == true if any of the hash mount options - ** were used. We must check them to make sure the user isn't - ** using a bad hash value - */ - if (code == UNSET_HASH || reiserfs_hash_detect(s)) - code = find_hash_out (s); - - if (code != UNSET_HASH && reiserfs_hash_detect(s)) { - /* detection has found the hash, and we must check against the - ** mount options - */ - if (reiserfs_rupasov_hash(s) && code != YURA_HASH) { - reiserfs_warning (s, "Error, %s hash detected, " - "unable to force rupasov hash", reiserfs_hashname(code)) ; - code = UNSET_HASH ; - } else if (reiserfs_tea_hash(s) && code != TEA_HASH) { - reiserfs_warning (s, "Error, %s hash detected, " - "unable to force tea hash", reiserfs_hashname(code)) ; - code = UNSET_HASH ; - } else if (reiserfs_r5_hash(s) && code != R5_HASH) { - reiserfs_warning (s, "Error, %s hash detected, " - "unable to force r5 hash", reiserfs_hashname(code)) ; - code = UNSET_HASH ; - } - } else { - /* find_hash_out was not called or could not determine the hash */ - if (reiserfs_rupasov_hash(s)) { - code = YURA_HASH ; - } else if (reiserfs_tea_hash(s)) { - code = TEA_HASH ; - } else if (reiserfs_r5_hash(s)) { - code = R5_HASH ; - } - } - - /* if we are mounted RW, and we have a new valid hash code, update - ** the super - */ - if (code != UNSET_HASH && - !(s->s_flags & MS_RDONLY) && - code != sb_hash_function_code(SB_DISK_SUPER_BLOCK(s))) { - set_sb_hash_function_code(SB_DISK_SUPER_BLOCK(s), code); - } - return code; + __u32 code; + + code = sb_hash_function_code(SB_DISK_SUPER_BLOCK(s)); + + /* reiserfs_hash_detect() == true if any of the hash mount options + ** were used. We must check them to make sure the user isn't + ** using a bad hash value + */ + if (code == UNSET_HASH || reiserfs_hash_detect(s)) + code = find_hash_out(s); + + if (code != UNSET_HASH && reiserfs_hash_detect(s)) { + /* detection has found the hash, and we must check against the + ** mount options + */ + if (reiserfs_rupasov_hash(s) && code != YURA_HASH) { + reiserfs_warning(s, "reiserfs-2507", + "Error, %s hash detected, " + "unable to force rupasov hash", + reiserfs_hashname(code)); + code = UNSET_HASH; + } else if (reiserfs_tea_hash(s) && code != TEA_HASH) { + reiserfs_warning(s, "reiserfs-2508", + "Error, %s hash detected, " + "unable to force tea hash", + reiserfs_hashname(code)); + code = UNSET_HASH; + } else if (reiserfs_r5_hash(s) && code != R5_HASH) { + reiserfs_warning(s, "reiserfs-2509", + "Error, %s hash detected, " + "unable to force r5 hash", + reiserfs_hashname(code)); + code = UNSET_HASH; + } + } else { + /* find_hash_out was not called or could not determine the hash */ + if (reiserfs_rupasov_hash(s)) { + code = YURA_HASH; + } else if (reiserfs_tea_hash(s)) { + code = TEA_HASH; + } else if (reiserfs_r5_hash(s)) { + code = R5_HASH; + } + } + + /* if we are mounted RW, and we have a new valid hash code, update + ** the super + */ + if (code != UNSET_HASH && + !(s->s_flags & MS_RDONLY) && + code != sb_hash_function_code(SB_DISK_SUPER_BLOCK(s))) { + set_sb_hash_function_code(SB_DISK_SUPER_BLOCK(s), code); + } + return code; } // return pointer to appropriate function -static hashf_t hash_function (struct super_block * s) +static hashf_t hash_function(struct super_block *s) { - switch (what_hash (s)) { - case TEA_HASH: - reiserfs_info (s, "Using tea hash to sort names\n"); - return keyed_hash; - case YURA_HASH: - reiserfs_info (s, "Using rupasov hash to sort names\n"); - return yura_hash; - case R5_HASH: - reiserfs_info (s, "Using r5 hash to sort names\n"); - return r5_hash; - } - return NULL; + switch (what_hash(s)) { + case TEA_HASH: + reiserfs_info(s, "Using tea hash to sort names\n"); + return keyed_hash; + case YURA_HASH: + reiserfs_info(s, "Using rupasov hash to sort names\n"); + return yura_hash; + case R5_HASH: + reiserfs_info(s, "Using r5 hash to sort names\n"); + return r5_hash; + } + return NULL; } // this is used to set up correct value for old partitions -static int function2code (hashf_t func) +static int function2code(hashf_t func) { - if (func == keyed_hash) - return TEA_HASH; - if (func == yura_hash) - return YURA_HASH; - if (func == r5_hash) - return R5_HASH; + if (func == keyed_hash) + return TEA_HASH; + if (func == yura_hash) + return YURA_HASH; + if (func == r5_hash) + return R5_HASH; - BUG() ; // should never happen + BUG(); // should never happen - return 0; + return 0; } -#define SWARN(silent, s, ...) \ +#define SWARN(silent, s, id, ...) \ if (!(silent)) \ - reiserfs_warning (s, __VA_ARGS__) + reiserfs_warning(s, id, __VA_ARGS__) -static int reiserfs_fill_super (struct super_block * s, void * data, int silent) +static int reiserfs_fill_super(struct super_block *s, void *data, int silent) { - struct inode *root_inode; - int j; - struct reiserfs_transaction_handle th ; - int old_format = 0; - unsigned long blocks; - unsigned int commit_max_age = 0; - int jinit_done = 0 ; - struct reiserfs_iget_args args ; - struct reiserfs_super_block * rs; - char *jdev_name; - struct reiserfs_sb_info *sbi; - int errval = -EINVAL; - - sbi = kmalloc(sizeof(struct reiserfs_sb_info), GFP_KERNEL); - if (!sbi) { - errval = -ENOMEM; - goto error; - } - s->s_fs_info = sbi; - memset (sbi, 0, sizeof (struct reiserfs_sb_info)); - /* Set default values for options: non-aggressive tails, RO on errors */ - REISERFS_SB(s)->s_mount_opt |= (1 << REISERFS_SMALLTAIL); - REISERFS_SB(s)->s_mount_opt |= (1 << REISERFS_ERROR_RO); - /* no preallocation minimum, be smart in - reiserfs_file_write instead */ - REISERFS_SB(s)->s_alloc_options.preallocmin = 0; - /* Preallocate by 16 blocks (17-1) at once */ - REISERFS_SB(s)->s_alloc_options.preallocsize = 17; - /* Initialize the rwsem for xattr dir */ - init_rwsem(&REISERFS_SB(s)->xattr_dir_sem); - - /* setup default block allocator options */ - reiserfs_init_alloc_options(s); - - jdev_name = NULL; - if (reiserfs_parse_options (s, (char *) data, &(sbi->s_mount_opt), &blocks, &jdev_name, &commit_max_age) == 0) { - goto error; - } - - if (blocks) { - SWARN (silent, s, "jmacd-7: reiserfs_fill_super: resize option " - "for remount only"); - goto error; - } - - /* try old format (undistributed bitmap, super block in 8-th 1k block of a device) */ - if (!read_super_block (s, REISERFS_OLD_DISK_OFFSET_IN_BYTES)) - old_format = 1; - /* try new format (64-th 1k block), which can contain reiserfs super block */ - else if (read_super_block (s, REISERFS_DISK_OFFSET_IN_BYTES)) { - SWARN(silent, s, "sh-2021: reiserfs_fill_super: can not find reiserfs on %s", reiserfs_bdevname (s)); - goto error; - } - - rs = SB_DISK_SUPER_BLOCK (s); - /* Let's do basic sanity check to verify that underlying device is not - smaller than the filesystem. If the check fails then abort and scream, - because bad stuff will happen otherwise. */ - if ( s->s_bdev && s->s_bdev->bd_inode && i_size_read(s->s_bdev->bd_inode) < sb_block_count(rs)*sb_blocksize(rs)) { - SWARN (silent, s, "Filesystem on %s cannot be mounted because it is bigger than the device", reiserfs_bdevname(s)); - SWARN(silent, s, "You may need to run fsck or increase size of your LVM partition"); - SWARN(silent, s, "Or may be you forgot to reboot after fdisk when it told you to"); - goto error; - } - - sbi->s_mount_state = SB_REISERFS_STATE(s); - sbi->s_mount_state = REISERFS_VALID_FS ; - - if (old_format ? read_old_bitmaps(s) : read_bitmaps(s)) { - SWARN(silent, s, "jmacd-8: reiserfs_fill_super: unable to read bitmap"); - goto error; - } -#ifdef CONFIG_REISERFS_CHECK - SWARN (silent, s, "CONFIG_REISERFS_CHECK is set ON"); - SWARN (silent, s, "- it is slow mode for debugging."); + struct inode *root_inode; + struct reiserfs_transaction_handle th; + int old_format = 0; + unsigned long blocks; + unsigned int commit_max_age = 0; + int jinit_done = 0; + struct reiserfs_iget_args args; + struct reiserfs_super_block *rs; + char *jdev_name; + struct reiserfs_sb_info *sbi; + int errval = -EINVAL; + char *qf_names[MAXQUOTAS] = {}; + unsigned int qfmt = 0; + + save_mount_options(s, data); + + sbi = kzalloc(sizeof(struct reiserfs_sb_info), GFP_KERNEL); + if (!sbi) { + errval = -ENOMEM; + goto error; + } + s->s_fs_info = sbi; + /* Set default values for options: non-aggressive tails, RO on errors */ + REISERFS_SB(s)->s_mount_opt |= (1 << REISERFS_SMALLTAIL); + REISERFS_SB(s)->s_mount_opt |= (1 << REISERFS_ERROR_RO); + /* no preallocation minimum, be smart in + reiserfs_file_write instead */ + REISERFS_SB(s)->s_alloc_options.preallocmin = 0; + /* Preallocate by 16 blocks (17-1) at once */ + REISERFS_SB(s)->s_alloc_options.preallocsize = 17; + /* setup default block allocator options */ + reiserfs_init_alloc_options(s); + + jdev_name = NULL; + if (reiserfs_parse_options + (s, (char *)data, &(sbi->s_mount_opt), &blocks, &jdev_name, + &commit_max_age, qf_names, &qfmt) == 0) { + goto error; + } +#ifdef CONFIG_QUOTA + handle_quota_files(s, qf_names, &qfmt); #endif - /* make data=ordered the default */ - if (!reiserfs_data_log(s) && !reiserfs_data_ordered(s) && - !reiserfs_data_writeback(s)) - { - REISERFS_SB(s)->s_mount_opt |= (1 << REISERFS_DATA_ORDERED); - } - - if (reiserfs_data_log(s)) { - reiserfs_info (s, "using journaled data mode\n"); - } else if (reiserfs_data_ordered(s)) { - reiserfs_info (s, "using ordered data mode\n"); - } else { - reiserfs_info (s, "using writeback data mode\n"); - } - if (reiserfs_barrier_flush(s)) { - printk("reiserfs: using flush barriers\n"); - } - - // set_device_ro(s->s_dev, 1) ; - if( journal_init(s, jdev_name, old_format, commit_max_age) ) { - SWARN(silent, s, "sh-2022: reiserfs_fill_super: unable to initialize journal space") ; - goto error ; - } else { - jinit_done = 1 ; /* once this is set, journal_release must be called - ** if we error out of the mount - */ - } - if (reread_meta_blocks(s)) { - SWARN(silent, s, "jmacd-9: reiserfs_fill_super: unable to reread meta blocks after journal init") ; - goto error ; - } - - if (replay_only (s)) - goto error; - - if (bdev_read_only(s->s_bdev) && !(s->s_flags & MS_RDONLY)) { - SWARN(silent, s, "clm-7000: Detected readonly device, marking FS readonly") ; - s->s_flags |= MS_RDONLY ; - } - args.objectid = REISERFS_ROOT_OBJECTID ; - args.dirid = REISERFS_ROOT_PARENT_OBJECTID ; - root_inode = iget5_locked (s, REISERFS_ROOT_OBJECTID, reiserfs_find_actor, reiserfs_init_locked_inode, (void *)(&args)); - if (!root_inode) { - SWARN(silent, s, "jmacd-10: reiserfs_fill_super: get root inode failed"); - goto error; - } - - if (root_inode->i_state & I_NEW) { - reiserfs_read_locked_inode(root_inode, &args); - unlock_new_inode(root_inode); - } - - s->s_root = d_alloc_root(root_inode); - if (!s->s_root) { - iput(root_inode); - goto error; - } - - // define and initialize hash function - sbi->s_hash_function = hash_function (s); - if (sbi->s_hash_function == NULL) { - dput(s->s_root) ; - s->s_root = NULL ; - goto error ; - } - - if (is_reiserfs_3_5 (rs) || (is_reiserfs_jr (rs) && SB_VERSION (s) == REISERFS_VERSION_1)) - set_bit(REISERFS_3_5, &(sbi->s_properties)); - else - set_bit(REISERFS_3_6, &(sbi->s_properties)); - - if (!(s->s_flags & MS_RDONLY)) { - - errval = journal_begin(&th, s, 1) ; - if (errval) { - dput (s->s_root); - s->s_root = NULL; - goto error; - } - reiserfs_prepare_for_journal(s, SB_BUFFER_WITH_SB(s), 1) ; - - set_sb_umount_state( rs, REISERFS_ERROR_FS ); - set_sb_fs_state (rs, 0); - - if (old_format_only(s)) { - /* filesystem of format 3.5 either with standard or non-standard - journal */ - if (convert_reiserfs (s)) { - /* and -o conv is given */ - if(!silent) - reiserfs_info (s,"converting 3.5 filesystem to the 3.6 format") ; - - if (is_reiserfs_3_5 (rs)) - /* put magic string of 3.6 format. 2.2 will not be able to - mount this filesystem anymore */ - memcpy (rs->s_v1.s_magic, reiserfs_3_6_magic_string, - sizeof (reiserfs_3_6_magic_string)); - - set_sb_version(rs,REISERFS_VERSION_2); - reiserfs_convert_objectid_map_v1(s) ; - set_bit(REISERFS_3_6, &(sbi->s_properties)); - clear_bit(REISERFS_3_5, &(sbi->s_properties)); - } else if (!silent){ - reiserfs_info (s, "using 3.5.x disk format\n") ; - } - } - - journal_mark_dirty(&th, s, SB_BUFFER_WITH_SB (s)); - errval = journal_end(&th, s, 1) ; - if (errval) { - dput (s->s_root); - s->s_root = NULL; - goto error; - } - - if ((errval = reiserfs_xattr_init (s, s->s_flags))) { - dput (s->s_root); - s->s_root = NULL; - goto error; - } - - /* look for files which were to be removed in previous session */ - finish_unfinished (s); - } else { - if ( old_format_only(s) && !silent) { - reiserfs_info (s, "using 3.5.x disk format\n") ; - } - - if ((errval = reiserfs_xattr_init (s, s->s_flags))) { - dput (s->s_root); - s->s_root = NULL; - goto error; - } - } - // mark hash in super block: it could be unset. overwrite should be ok - set_sb_hash_function_code( rs, function2code(sbi->s_hash_function ) ); - - handle_attrs( s ); - - reiserfs_proc_info_init( s ); - - init_waitqueue_head (&(sbi->s_wait)); - spin_lock_init(&sbi->bitmap_lock); - - return (0); - - error: - if (jinit_done) { /* kill the commit thread, free journal ram */ - journal_release_error(NULL, s) ; - } - if (SB_DISK_SUPER_BLOCK (s)) { - for (j = 0; j < SB_BMAP_NR (s); j ++) { - if (SB_AP_BITMAP (s)) - brelse (SB_AP_BITMAP (s)[j].bh); - } - if (SB_AP_BITMAP (s)) - vfree (SB_AP_BITMAP (s)); - } - if (SB_BUFFER_WITH_SB (s)) - brelse(SB_BUFFER_WITH_SB (s)); -#ifdef CONFIG_QUOTA - for (j = 0; j < MAXQUOTAS; j++) { - if (sbi->s_qf_names[j]) - kfree(sbi->s_qf_names[j]); - } + if (blocks) { + SWARN(silent, s, "jmacd-7", "resize option for remount only"); + goto error; + } + + /* try old format (undistributed bitmap, super block in 8-th 1k block of a device) */ + if (!read_super_block(s, REISERFS_OLD_DISK_OFFSET_IN_BYTES)) + old_format = 1; + /* try new format (64-th 1k block), which can contain reiserfs super block */ + else if (read_super_block(s, REISERFS_DISK_OFFSET_IN_BYTES)) { + SWARN(silent, s, "sh-2021", "can not find reiserfs on %s", + reiserfs_bdevname(s)); + goto error; + } + + rs = SB_DISK_SUPER_BLOCK(s); + /* Let's do basic sanity check to verify that underlying device is not + smaller than the filesystem. If the check fails then abort and scream, + because bad stuff will happen otherwise. */ + if (s->s_bdev && s->s_bdev->bd_inode + && i_size_read(s->s_bdev->bd_inode) < + sb_block_count(rs) * sb_blocksize(rs)) { + SWARN(silent, s, "", "Filesystem cannot be " + "mounted because it is bigger than the device"); + SWARN(silent, s, "", "You may need to run fsck " + "or increase size of your LVM partition"); + SWARN(silent, s, "", "Or may be you forgot to " + "reboot after fdisk when it told you to"); + goto error; + } + + sbi->s_mount_state = SB_REISERFS_STATE(s); + sbi->s_mount_state = REISERFS_VALID_FS; + + if ((errval = reiserfs_init_bitmap_cache(s))) { + SWARN(silent, s, "jmacd-8", "unable to read bitmap"); + goto error; + } + errval = -EINVAL; +#ifdef CONFIG_REISERFS_CHECK + SWARN(silent, s, "", "CONFIG_REISERFS_CHECK is set ON"); + SWARN(silent, s, "", "- it is slow mode for debugging."); #endif - if (sbi != NULL) { - kfree(sbi); - } - s->s_fs_info = NULL; - return errval; -} + /* make data=ordered the default */ + if (!reiserfs_data_log(s) && !reiserfs_data_ordered(s) && + !reiserfs_data_writeback(s)) { + REISERFS_SB(s)->s_mount_opt |= (1 << REISERFS_DATA_ORDERED); + } + if (reiserfs_data_log(s)) { + reiserfs_info(s, "using journaled data mode\n"); + } else if (reiserfs_data_ordered(s)) { + reiserfs_info(s, "using ordered data mode\n"); + } else { + reiserfs_info(s, "using writeback data mode\n"); + } + if (reiserfs_barrier_flush(s)) { + printk("reiserfs: using flush barriers\n"); + } + // set_device_ro(s->s_dev, 1) ; + if (journal_init(s, jdev_name, old_format, commit_max_age)) { + SWARN(silent, s, "sh-2022", + "unable to initialize journal space"); + goto error; + } else { + jinit_done = 1; /* once this is set, journal_release must be called + ** if we error out of the mount + */ + } + if (reread_meta_blocks(s)) { + SWARN(silent, s, "jmacd-9", + "unable to reread meta blocks after journal init"); + goto error; + } -static int reiserfs_statfs (struct super_block * s, struct kstatfs * buf) -{ - struct reiserfs_super_block * rs = SB_DISK_SUPER_BLOCK (s); - - buf->f_namelen = (REISERFS_MAX_NAME (s->s_blocksize)); - buf->f_bfree = sb_free_blocks(rs); - buf->f_bavail = buf->f_bfree; - buf->f_blocks = sb_block_count(rs) - sb_bmap_nr(rs) - 1; - buf->f_bsize = s->s_blocksize; - /* changed to accommodate gcc folks.*/ - buf->f_type = REISERFS_SUPER_MAGIC; - return 0; -} + if (replay_only(s)) + goto error; + + if (bdev_read_only(s->s_bdev) && !(s->s_flags & MS_RDONLY)) { + SWARN(silent, s, "clm-7000", + "Detected readonly device, marking FS readonly"); + s->s_flags |= MS_RDONLY; + } + args.objectid = REISERFS_ROOT_OBJECTID; + args.dirid = REISERFS_ROOT_PARENT_OBJECTID; + root_inode = + iget5_locked(s, REISERFS_ROOT_OBJECTID, reiserfs_find_actor, + reiserfs_init_locked_inode, (void *)(&args)); + if (!root_inode) { + SWARN(silent, s, "jmacd-10", "get root inode failed"); + goto error; + } + + if (root_inode->i_state & I_NEW) { + reiserfs_read_locked_inode(root_inode, &args); + unlock_new_inode(root_inode); + } + s->s_root = d_alloc_root(root_inode); + if (!s->s_root) { + iput(root_inode); + goto error; + } + // define and initialize hash function + sbi->s_hash_function = hash_function(s); + if (sbi->s_hash_function == NULL) { + dput(s->s_root); + s->s_root = NULL; + goto error; + } + + if (is_reiserfs_3_5(rs) + || (is_reiserfs_jr(rs) && SB_VERSION(s) == REISERFS_VERSION_1)) + set_bit(REISERFS_3_5, &(sbi->s_properties)); + else if (old_format) + set_bit(REISERFS_OLD_FORMAT, &(sbi->s_properties)); + else + set_bit(REISERFS_3_6, &(sbi->s_properties)); + + if (!(s->s_flags & MS_RDONLY)) { + + errval = journal_begin(&th, s, 1); + if (errval) { + dput(s->s_root); + s->s_root = NULL; + goto error; + } + reiserfs_prepare_for_journal(s, SB_BUFFER_WITH_SB(s), 1); + + set_sb_umount_state(rs, REISERFS_ERROR_FS); + set_sb_fs_state(rs, 0); + + /* Clear out s_bmap_nr if it would wrap. We can handle this + * case, but older revisions can't. This will cause the + * file system to fail mount on those older implementations, + * avoiding corruption. -jeffm */ + if (bmap_would_wrap(reiserfs_bmap_count(s)) && + sb_bmap_nr(rs) != 0) { + reiserfs_warning(s, "super-2030", "This file system " + "claims to use %u bitmap blocks in " + "its super block, but requires %u. " + "Clearing to zero.", sb_bmap_nr(rs), + reiserfs_bmap_count(s)); + + set_sb_bmap_nr(rs, 0); + } + + if (old_format_only(s)) { + /* filesystem of format 3.5 either with standard or non-standard + journal */ + if (convert_reiserfs(s)) { + /* and -o conv is given */ + if (!silent) + reiserfs_info(s, + "converting 3.5 filesystem to the 3.6 format"); + + if (is_reiserfs_3_5(rs)) + /* put magic string of 3.6 format. 2.2 will not be able to + mount this filesystem anymore */ + memcpy(rs->s_v1.s_magic, + reiserfs_3_6_magic_string, + sizeof + (reiserfs_3_6_magic_string)); + + set_sb_version(rs, REISERFS_VERSION_2); + reiserfs_convert_objectid_map_v1(s); + set_bit(REISERFS_3_6, &(sbi->s_properties)); + clear_bit(REISERFS_3_5, &(sbi->s_properties)); + } else if (!silent) { + reiserfs_info(s, "using 3.5.x disk format\n"); + } + } else + set_sb_mnt_count(rs, sb_mnt_count(rs) + 1); + + + journal_mark_dirty(&th, s, SB_BUFFER_WITH_SB(s)); + errval = journal_end(&th, s, 1); + if (errval) { + dput(s->s_root); + s->s_root = NULL; + goto error; + } + + if ((errval = reiserfs_lookup_privroot(s)) || + (errval = reiserfs_xattr_init(s, s->s_flags))) { + dput(s->s_root); + s->s_root = NULL; + goto error; + } + + /* look for files which were to be removed in previous session */ + finish_unfinished(s); + } else { + if (old_format_only(s) && !silent) { + reiserfs_info(s, "using 3.5.x disk format\n"); + } + + if ((errval = reiserfs_lookup_privroot(s)) || + (errval = reiserfs_xattr_init(s, s->s_flags))) { + dput(s->s_root); + s->s_root = NULL; + goto error; + } + } + // mark hash in super block: it could be unset. overwrite should be ok + set_sb_hash_function_code(rs, function2code(sbi->s_hash_function)); + + handle_attrs(s); + + reiserfs_proc_info_init(s); + + init_waitqueue_head(&(sbi->s_wait)); + spin_lock_init(&sbi->bitmap_lock); + + return (0); + +error: + if (jinit_done) { /* kill the commit thread, free journal ram */ + journal_release_error(NULL, s); + } + + reiserfs_free_bitmap_cache(s); + if (SB_BUFFER_WITH_SB(s)) + brelse(SB_BUFFER_WITH_SB(s)); #ifdef CONFIG_QUOTA -static int reiserfs_dquot_initialize(struct inode *inode, int type) -{ - struct reiserfs_transaction_handle th; - int ret; - - /* We may create quota structure so we need to reserve enough blocks */ - reiserfs_write_lock(inode->i_sb); - journal_begin(&th, inode->i_sb, 2*REISERFS_QUOTA_INIT_BLOCKS); - ret = dquot_initialize(inode, type); - journal_end(&th, inode->i_sb, 2*REISERFS_QUOTA_INIT_BLOCKS); - reiserfs_write_unlock(inode->i_sb); - return ret; + { + int j; + for (j = 0; j < MAXQUOTAS; j++) + kfree(qf_names[j]); + } +#endif + kfree(sbi); + + s->s_fs_info = NULL; + return errval; } -static int reiserfs_dquot_drop(struct inode *inode) +static int reiserfs_statfs(struct dentry *dentry, struct kstatfs *buf) { - struct reiserfs_transaction_handle th; - int ret; - - /* We may delete quota structure so we need to reserve enough blocks */ - reiserfs_write_lock(inode->i_sb); - journal_begin(&th, inode->i_sb, 2*REISERFS_QUOTA_INIT_BLOCKS); - ret = dquot_drop(inode); - journal_end(&th, inode->i_sb, 2*REISERFS_QUOTA_INIT_BLOCKS); - reiserfs_write_unlock(inode->i_sb); - return ret; + struct reiserfs_super_block *rs = SB_DISK_SUPER_BLOCK(dentry->d_sb); + + buf->f_namelen = (REISERFS_MAX_NAME(s->s_blocksize)); + buf->f_bfree = sb_free_blocks(rs); + buf->f_bavail = buf->f_bfree; + buf->f_blocks = sb_block_count(rs) - sb_bmap_nr(rs) - 1; + buf->f_bsize = dentry->d_sb->s_blocksize; + /* changed to accommodate gcc folks. */ + buf->f_type = REISERFS_SUPER_MAGIC; + buf->f_fsid.val[0] = (u32)crc32_le(0, rs->s_uuid, sizeof(rs->s_uuid)/2); + buf->f_fsid.val[1] = (u32)crc32_le(0, rs->s_uuid + sizeof(rs->s_uuid)/2, + sizeof(rs->s_uuid)/2); + + return 0; } +#ifdef CONFIG_QUOTA static int reiserfs_write_dquot(struct dquot *dquot) { - struct reiserfs_transaction_handle th; - int ret; - - reiserfs_write_lock(dquot->dq_sb); - journal_begin(&th, dquot->dq_sb, REISERFS_QUOTA_TRANS_BLOCKS); - ret = dquot_commit(dquot); - journal_end(&th, dquot->dq_sb, REISERFS_QUOTA_TRANS_BLOCKS); - reiserfs_write_unlock(dquot->dq_sb); - return ret; + struct reiserfs_transaction_handle th; + int ret, err; + + reiserfs_write_lock(dquot->dq_sb); + ret = + journal_begin(&th, dquot->dq_sb, + REISERFS_QUOTA_TRANS_BLOCKS(dquot->dq_sb)); + if (ret) + goto out; + ret = dquot_commit(dquot); + err = + journal_end(&th, dquot->dq_sb, + REISERFS_QUOTA_TRANS_BLOCKS(dquot->dq_sb)); + if (!ret && err) + ret = err; + out: + reiserfs_write_unlock(dquot->dq_sb); + return ret; } static int reiserfs_acquire_dquot(struct dquot *dquot) { - struct reiserfs_transaction_handle th; - int ret; - - reiserfs_write_lock(dquot->dq_sb); - journal_begin(&th, dquot->dq_sb, REISERFS_QUOTA_INIT_BLOCKS); - ret = dquot_acquire(dquot); - journal_end(&th, dquot->dq_sb, REISERFS_QUOTA_INIT_BLOCKS); - reiserfs_write_unlock(dquot->dq_sb); - return ret; + struct reiserfs_transaction_handle th; + int ret, err; + + reiserfs_write_lock(dquot->dq_sb); + ret = + journal_begin(&th, dquot->dq_sb, + REISERFS_QUOTA_INIT_BLOCKS(dquot->dq_sb)); + if (ret) + goto out; + ret = dquot_acquire(dquot); + err = + journal_end(&th, dquot->dq_sb, + REISERFS_QUOTA_INIT_BLOCKS(dquot->dq_sb)); + if (!ret && err) + ret = err; + out: + reiserfs_write_unlock(dquot->dq_sb); + return ret; } static int reiserfs_release_dquot(struct dquot *dquot) { - struct reiserfs_transaction_handle th; - int ret; - - reiserfs_write_lock(dquot->dq_sb); - journal_begin(&th, dquot->dq_sb, REISERFS_QUOTA_INIT_BLOCKS); - ret = dquot_release(dquot); - journal_end(&th, dquot->dq_sb, REISERFS_QUOTA_INIT_BLOCKS); - reiserfs_write_unlock(dquot->dq_sb); - return ret; + struct reiserfs_transaction_handle th; + int ret, err; + + reiserfs_write_lock(dquot->dq_sb); + ret = + journal_begin(&th, dquot->dq_sb, + REISERFS_QUOTA_DEL_BLOCKS(dquot->dq_sb)); + if (ret) { + /* Release dquot anyway to avoid endless cycle in dqput() */ + dquot_release(dquot); + goto out; + } + ret = dquot_release(dquot); + err = + journal_end(&th, dquot->dq_sb, + REISERFS_QUOTA_DEL_BLOCKS(dquot->dq_sb)); + if (!ret && err) + ret = err; + out: + reiserfs_write_unlock(dquot->dq_sb); + return ret; } static int reiserfs_mark_dquot_dirty(struct dquot *dquot) { - /* Are we journalling quotas? */ - if (REISERFS_SB(dquot->dq_sb)->s_qf_names[USRQUOTA] || - REISERFS_SB(dquot->dq_sb)->s_qf_names[GRPQUOTA]) { - dquot_mark_dquot_dirty(dquot); - return reiserfs_write_dquot(dquot); - } - else - return dquot_mark_dquot_dirty(dquot); + /* Are we journaling quotas? */ + if (REISERFS_SB(dquot->dq_sb)->s_qf_names[USRQUOTA] || + REISERFS_SB(dquot->dq_sb)->s_qf_names[GRPQUOTA]) { + dquot_mark_dquot_dirty(dquot); + return reiserfs_write_dquot(dquot); + } else + return dquot_mark_dquot_dirty(dquot); } static int reiserfs_write_info(struct super_block *sb, int type) { - struct reiserfs_transaction_handle th; - int ret; - - /* Data block + inode block */ - reiserfs_write_lock(sb); - journal_begin(&th, sb, 2); - ret = dquot_commit_info(sb, type); - journal_end(&th, sb, 2); - reiserfs_write_unlock(sb); - return ret; + struct reiserfs_transaction_handle th; + int ret, err; + + /* Data block + inode block */ + reiserfs_write_lock(sb); + ret = journal_begin(&th, sb, 2); + if (ret) + goto out; + ret = dquot_commit_info(sb, type); + err = journal_end(&th, sb, 2); + if (!ret && err) + ret = err; + out: + reiserfs_write_unlock(sb); + return ret; } /* - * Turn on quotas during mount time - we need to find - * the quota file and such... + * Turn on quotas during mount time - we need to find the quota file and such... */ static int reiserfs_quota_on_mount(struct super_block *sb, int type) { - int err; - struct dentry *dentry; - struct qstr name = { .name = REISERFS_SB(sb)->s_qf_names[type], - .hash = 0, - .len = strlen(REISERFS_SB(sb)->s_qf_names[type])}; - - dentry = lookup_hash(&name, sb->s_root); - if (IS_ERR(dentry)) - return PTR_ERR(dentry); - err = vfs_quota_on_mount(type, REISERFS_SB(sb)->s_jquota_fmt, dentry); - /* Now invalidate and put the dentry - quota got its own reference - * to inode and dentry has at least wrong hash so we had better - * throw it away */ - d_invalidate(dentry); - dput(dentry); - return err; + return vfs_quota_on_mount(sb, REISERFS_SB(sb)->s_qf_names[type], + REISERFS_SB(sb)->s_jquota_fmt, type); } /* * Standard function to be called on quota_on */ -static int reiserfs_quota_on(struct super_block *sb, int type, int format_id, char *path) +static int reiserfs_quota_on(struct super_block *sb, int type, int format_id, + char *name, int remount) { - int err; - struct nameidata nd; - - err = path_lookup(path, LOOKUP_FOLLOW, &nd); - if (err) - return err; - /* Quotafile not on the same filesystem? */ - if (nd.mnt->mnt_sb != sb) { - path_release(&nd); - return -EXDEV; - } - /* We must not pack tails for quota files on reiserfs for quota IO to work */ - if (!REISERFS_I(nd.dentry->d_inode)->i_flags & i_nopack_mask) { - reiserfs_warning(sb, "reiserfs: Quota file must have tail packing disabled."); - path_release(&nd); - return -EINVAL; - } - /* Not journalling quota? No more tests needed... */ - if (!REISERFS_SB(sb)->s_qf_names[USRQUOTA] && - !REISERFS_SB(sb)->s_qf_names[GRPQUOTA]) { - path_release(&nd); - return vfs_quota_on(sb, type, format_id, path); - } - /* Quotafile not of fs root? */ - if (nd.dentry->d_parent->d_inode != sb->s_root->d_inode) - reiserfs_warning(sb, "reiserfs: Quota file not on filesystem root. " - "Journalled quota will not work."); - path_release(&nd); - return vfs_quota_on(sb, type, format_id, path); + int err; + struct path path; + struct inode *inode; + struct reiserfs_transaction_handle th; + + if (!(REISERFS_SB(sb)->s_mount_opt & (1 << REISERFS_QUOTA))) + return -EINVAL; + /* No more checks needed? Path and format_id are bogus anyway... */ + if (remount) + return vfs_quota_on(sb, type, format_id, name, 1); + err = kern_path(name, LOOKUP_FOLLOW, &path); + if (err) + return err; + /* Quotafile not on the same filesystem? */ + if (path.mnt->mnt_sb != sb) { + err = -EXDEV; + goto out; + } + inode = path.dentry->d_inode; + /* We must not pack tails for quota files on reiserfs for quota IO to work */ + if (!(REISERFS_I(inode)->i_flags & i_nopack_mask)) { + err = reiserfs_unpack(inode, NULL); + if (err) { + reiserfs_warning(sb, "super-6520", + "Unpacking tail of quota file failed" + " (%d). Cannot turn on quotas.", err); + err = -EINVAL; + goto out; + } + mark_inode_dirty(inode); + } + /* Journaling quota? */ + if (REISERFS_SB(sb)->s_qf_names[type]) { + /* Quotafile not of fs root? */ + if (path.dentry->d_parent != sb->s_root) + reiserfs_warning(sb, "super-6521", + "Quota file not on filesystem root. " + "Journalled quota will not work."); + } + + /* + * When we journal data on quota file, we have to flush journal to see + * all updates to the file when we bypass pagecache... + */ + if (reiserfs_file_data_log(inode)) { + /* Just start temporary transaction and finish it */ + err = journal_begin(&th, sb, 1); + if (err) + goto out; + err = journal_end_sync(&th, sb, 1); + if (err) + goto out; + } + err = vfs_quota_on_path(sb, type, format_id, &path); +out: + path_put(&path); + return err; } /* Read data from quotafile - avoid pagecache and such because we cannot afford @@ -1996,42 +2094,44 @@ static int reiserfs_quota_on(struct super_block *sb, int type, int format_id, ch static ssize_t reiserfs_quota_read(struct super_block *sb, int type, char *data, size_t len, loff_t off) { - struct inode *inode = sb_dqopt(sb)->files[type]; - unsigned long blk = off >> sb->s_blocksize_bits; - int err = 0, offset = off & (sb->s_blocksize - 1), tocopy; - size_t toread; - struct buffer_head tmp_bh, *bh; - loff_t i_size = i_size_read(inode); - - if (off > i_size) - return 0; - if (off+len > i_size) - len = i_size-off; - toread = len; - while (toread > 0) { - tocopy = sb->s_blocksize - offset < toread ? sb->s_blocksize - offset : toread; - tmp_bh.b_state = 0; - /* Quota files are without tails so we can safely use this function */ - reiserfs_write_lock(sb); - err = reiserfs_get_block(inode, blk, &tmp_bh, 0); - reiserfs_write_unlock(sb); - if (err) - return err; - if (!buffer_mapped(&tmp_bh)) /* A hole? */ - memset(data, 0, tocopy); - else { - bh = sb_bread(sb, tmp_bh.b_blocknr); - if (!bh) - return -EIO; - memcpy(data, bh->b_data+offset, tocopy); - brelse(bh); - } - offset = 0; - toread -= tocopy; - data += tocopy; - blk++; - } - return len; + struct inode *inode = sb_dqopt(sb)->files[type]; + unsigned long blk = off >> sb->s_blocksize_bits; + int err = 0, offset = off & (sb->s_blocksize - 1), tocopy; + size_t toread; + struct buffer_head tmp_bh, *bh; + loff_t i_size = i_size_read(inode); + + if (off > i_size) + return 0; + if (off + len > i_size) + len = i_size - off; + toread = len; + while (toread > 0) { + tocopy = + sb->s_blocksize - offset < + toread ? sb->s_blocksize - offset : toread; + tmp_bh.b_state = 0; + /* Quota files are without tails so we can safely use this function */ + reiserfs_write_lock(sb); + err = reiserfs_get_block(inode, blk, &tmp_bh, 0); + reiserfs_write_unlock(sb); + if (err) + return err; + if (!buffer_mapped(&tmp_bh)) /* A hole? */ + memset(data, 0, tocopy); + else { + bh = sb_bread(sb, tmp_bh.b_blocknr); + if (!bh) + return -EIO; + memcpy(data, bh->b_data + offset, tocopy); + brelse(bh); + } + offset = 0; + toread -= tocopy; + data += tocopy; + blk++; + } + return len; } /* Write to quotafile (we know the transaction is already started and has @@ -2039,117 +2139,118 @@ static ssize_t reiserfs_quota_read(struct super_block *sb, int type, char *data, static ssize_t reiserfs_quota_write(struct super_block *sb, int type, const char *data, size_t len, loff_t off) { - struct inode *inode = sb_dqopt(sb)->files[type]; - unsigned long blk = off >> sb->s_blocksize_bits; - int err = 0, offset = off & (sb->s_blocksize - 1), tocopy; - int journal_quota = REISERFS_SB(sb)->s_qf_names[type] != NULL; - size_t towrite = len; - struct buffer_head tmp_bh, *bh; - - down(&inode->i_sem); - while (towrite > 0) { - tocopy = sb->s_blocksize - offset < towrite ? - sb->s_blocksize - offset : towrite; - tmp_bh.b_state = 0; - err = reiserfs_get_block(inode, blk, &tmp_bh, GET_BLOCK_CREATE); - if (err) - goto out; - if (offset || tocopy != sb->s_blocksize) - bh = sb_bread(sb, tmp_bh.b_blocknr); - else - bh = sb_getblk(sb, tmp_bh.b_blocknr); - if (!bh) { - err = -EIO; - goto out; - } - lock_buffer(bh); - memcpy(bh->b_data+offset, data, tocopy); - flush_dcache_page(bh->b_page); - set_buffer_uptodate(bh); - unlock_buffer(bh); - reiserfs_prepare_for_journal(sb, bh, 1); - journal_mark_dirty(current->journal_info, sb, bh); - if (!journal_quota) - reiserfs_add_ordered_list(inode, bh); - brelse(bh); - offset = 0; - towrite -= tocopy; - data += tocopy; - blk++; - } + struct inode *inode = sb_dqopt(sb)->files[type]; + unsigned long blk = off >> sb->s_blocksize_bits; + int err = 0, offset = off & (sb->s_blocksize - 1), tocopy; + int journal_quota = REISERFS_SB(sb)->s_qf_names[type] != NULL; + size_t towrite = len; + struct buffer_head tmp_bh, *bh; + + if (!current->journal_info) { + printk(KERN_WARNING "reiserfs: Quota write (off=%Lu, len=%Lu)" + " cancelled because transaction is not started.\n", + (unsigned long long)off, (unsigned long long)len); + return -EIO; + } + mutex_lock_nested(&inode->i_mutex, I_MUTEX_QUOTA); + while (towrite > 0) { + tocopy = sb->s_blocksize - offset < towrite ? + sb->s_blocksize - offset : towrite; + tmp_bh.b_state = 0; + err = reiserfs_get_block(inode, blk, &tmp_bh, GET_BLOCK_CREATE); + if (err) + goto out; + if (offset || tocopy != sb->s_blocksize) + bh = sb_bread(sb, tmp_bh.b_blocknr); + else + bh = sb_getblk(sb, tmp_bh.b_blocknr); + if (!bh) { + err = -EIO; + goto out; + } + lock_buffer(bh); + memcpy(bh->b_data + offset, data, tocopy); + flush_dcache_page(bh->b_page); + set_buffer_uptodate(bh); + unlock_buffer(bh); + reiserfs_prepare_for_journal(sb, bh, 1); + journal_mark_dirty(current->journal_info, sb, bh); + if (!journal_quota) + reiserfs_add_ordered_list(inode, bh); + brelse(bh); + offset = 0; + towrite -= tocopy; + data += tocopy; + blk++; + } out: - if (len == towrite) - return err; - if (inode->i_size < off+len-towrite) - i_size_write(inode, off+len-towrite); - inode->i_version++; - inode->i_mtime = inode->i_ctime = CURRENT_TIME; - mark_inode_dirty(inode); - up(&inode->i_sem); - return len - towrite; + if (len == towrite) { + mutex_unlock(&inode->i_mutex); + return err; + } + if (inode->i_size < off + len - towrite) + i_size_write(inode, off + len - towrite); + inode->i_version++; + inode->i_mtime = inode->i_ctime = CURRENT_TIME; + mark_inode_dirty(inode); + mutex_unlock(&inode->i_mutex); + return len - towrite; } #endif -static struct super_block* -get_super_block (struct file_system_type *fs_type, int flags, - const char *dev_name, void *data) +static int get_super_block(struct file_system_type *fs_type, + int flags, const char *dev_name, + void *data, struct vfsmount *mnt) { - return get_sb_bdev(fs_type, flags, dev_name, data, reiserfs_fill_super); + return get_sb_bdev(fs_type, flags, dev_name, data, reiserfs_fill_super, + mnt); } -static int __init -init_reiserfs_fs ( void ) +static int __init init_reiserfs_fs(void) { int ret; - if ((ret = init_inodecache ())) { + if ((ret = init_inodecache())) { return ret; } - if ((ret = reiserfs_xattr_register_handlers ())) - goto failed_reiserfs_xattr_register_handlers; + reiserfs_proc_info_global_init(); + reiserfs_proc_register_global("version", + reiserfs_global_version_in_proc); - reiserfs_proc_info_global_init (); - reiserfs_proc_register_global ("version", reiserfs_global_version_in_proc); - - ret = register_filesystem (& reiserfs_fs_type); + ret = register_filesystem(&reiserfs_fs_type); if (ret == 0) { return 0; } - reiserfs_xattr_unregister_handlers (); - -failed_reiserfs_xattr_register_handlers: - reiserfs_proc_unregister_global ("version"); - reiserfs_proc_info_global_done (); - destroy_inodecache (); + reiserfs_proc_unregister_global("version"); + reiserfs_proc_info_global_done(); + destroy_inodecache(); return ret; } -static void __exit -exit_reiserfs_fs ( void ) +static void __exit exit_reiserfs_fs(void) { - reiserfs_xattr_unregister_handlers (); - reiserfs_proc_unregister_global ("version"); - reiserfs_proc_info_global_done (); - unregister_filesystem (& reiserfs_fs_type); - destroy_inodecache (); + reiserfs_proc_unregister_global("version"); + reiserfs_proc_info_global_done(); + unregister_filesystem(&reiserfs_fs_type); + destroy_inodecache(); } struct file_system_type reiserfs_fs_type = { - .owner = THIS_MODULE, - .name = "reiserfs", - .get_sb = get_super_block, - .kill_sb = kill_block_super, - .fs_flags = FS_REQUIRES_DEV, + .owner = THIS_MODULE, + .name = "reiserfs", + .get_sb = get_super_block, + .kill_sb = reiserfs_kill_sb, + .fs_flags = FS_REQUIRES_DEV, }; -MODULE_DESCRIPTION ("ReiserFS journaled filesystem"); -MODULE_AUTHOR ("Hans Reiser "); -MODULE_LICENSE ("GPL"); +MODULE_DESCRIPTION("ReiserFS journaled filesystem"); +MODULE_AUTHOR("Hans Reiser "); +MODULE_LICENSE("GPL"); -module_init (init_reiserfs_fs); -module_exit (exit_reiserfs_fs); +module_init(init_reiserfs_fs); +module_exit(exit_reiserfs_fs);