diff options
Diffstat (limited to 'fs/ext2')
| -rw-r--r-- | fs/ext2/CHANGES | 157 | ||||
| -rw-r--r-- | fs/ext2/acl.c | 6 | ||||
| -rw-r--r-- | fs/ext2/balloc.c | 73 | ||||
| -rw-r--r-- | fs/ext2/ialloc.c | 40 | ||||
| -rw-r--r-- | fs/ext2/super.c | 16 |
5 files changed, 3 insertions, 289 deletions
diff --git a/fs/ext2/CHANGES b/fs/ext2/CHANGES deleted file mode 100644 index aa5aaf0e5911..000000000000 --- a/fs/ext2/CHANGES +++ /dev/null @@ -1,157 +0,0 @@ -Changes from version 0.5a to version 0.5b -========================================= - - Now that we have sysctl(), the immutable flag cannot be changed when - the system is running at security level > 0. - - Some cleanups in the code. - - More consistency checks on directories. - - The ext2.diff patch from Tom May <ftom@netcom.com> has been - integrated. This patch replaces expensive "/" and "%" with - cheap ">>" and "&" where possible. - -Changes from version 0.5 to version 0.5a -======================================== - - Zero the partial block following the end of the file when a file - is truncated. - - Dates updated in the copyright. - - More checks when the filesystem is mounted: the count of blocks, - fragments, and inodes per group is checked against the block size. - - The buffers used by the error routines are now static variables, to - avoid using space on the kernel stack, as requested by Linus. - - Some cleanups in the error messages (some versions of syslog contain - a bug which truncates an error message if it contains '\n'). - - Check that no data can be written to a file past the 2GB limit. - - The famous readdir() bug has been fixed by Stephen Tweedie. - - Added a revision level in the superblock. - - Full support for O_SYNC flag of the open system call. - - New mount options: `resuid=#uid' and `resgid=#gid'. `resuid' causes - ext2fs to consider user #uid like root for the reserved blocks. - `resgid' acts the same way with group #gid. New fields in the - superblock contain default values for resuid and resgid and can - be modified by tune2fs. - Idea comes from Rene Cougnenc <cougnenc@renux.frmug.fr.net>. - - New mount options: `bsddf' and `minixdf'. `bsddf' causes ext2fs - to remove the blocks used for FS structures from the total block - count in statfs. With `minixdf', ext2fs mimics Minix behavior - in statfs (i.e. it returns the total number of blocks on the - partition). This is intended to make bde happy :-) - - New file attributes: - - Immutable files cannot be modified. Data cannot be written to - these files. They cannot be removed, renamed and new links cannot - be created. Even root cannot modify the files. He has to remove - the immutable attribute first. - - Append-only files: can only be written in append-mode when writing. - They cannot be removed, renamed and new links cannot be created. - Note: files may only be added to an append-only directory. - - No-dump files: the attribute is not used by the kernel. My port - of dump uses it to avoid backing up files which are not important. - - New check in ext2_check_dir_entry: the inode number is checked. - - Support for big file systems: the copy of the FS descriptor is now - dynamically allocated (previous versions used a fixed size array). - This allows to mount 2GB+ FS. - - Reorganization of the ext2_inode structure to allow other operating - systems to create specific fields if they use ext2fs as their native - file system. Currently, ext2fs is only implemented in Linux but - will soon be part of Gnu Hurd and of Masix. - -Changes from version 0.4b to version 0.5 -======================================== - - New superblock fields: s_lastcheck and s_checkinterval added - by Uwe Ohse <uwe@tirka.gun.de> to implement timedependent checks - of the file system - - Real random numbers for secure rm added by Pierre del Perugia - <delperug@gla.ecoledoc.ibp.fr> - - The mount warnings related to the state of a fs are not printed - if the fs is mounted read-only, idea by Nick Holloway - <alfie@dcs.warwick.ac.uk> - -Changes from version 0.4a to version 0.4b -========================================= - - Copyrights changed to include the name of my laboratory. - - Clean up of balloc.c and ialloc.c. - - More consistency checks. - - Block preallocation added by Stephen Tweedie. - - Direct reads of directories disallowed. - - Readahead implemented in readdir by Stephen Tweedie. - - Bugs in block and inodes allocation fixed. - - Readahead implemented in ext2_find_entry by Chip Salzenberg. - - New mount options: - `check=none|normal|strict' - `debug' - `errors=continue|remount-ro|panic' - `grpid', `bsdgroups' - `nocheck' - `nogrpid', `sysvgroups' - - truncate() now tries to deallocate contiguous blocks in a single call - to ext2_free_blocks(). - - lots of cosmetic changes. - -Changes from version 0.4 to version 0.4a -======================================== - - the `sync' option support is now complete. Version 0.4 was not - supporting it when truncating a file. I have tested the synchronous - writes and they work but they make the system very slow :-( I have - to work again on this to make it faster. - - when detecting an error on a mounted filesystem, version 0.4 used - to try to write a flag in the super block even if the filesystem had - been mounted read-only. This is fixed. - - the `sb=#' option now causes the kernel code to use the filesystem - descriptors located at block #+1. Version 0.4 used the superblock - backup located at block # but used the main copy of the descriptors. - - a new file attribute `S' is supported. This attribute causes - synchronous writes but is applied to a file not to the entire file - system (thanks to Michael Kraehe <kraehe@bakunin.north.de> for - suggesting it). - - the directory cache is inhibited by default. The cache management - code seems to be buggy and I have to look at it carefully before - using it again. - - deleting a file with the `s' attribute (secure deletion) causes its - blocks to be overwritten with random values not with zeros (thanks to - Michael A. Griffith <grif@cs.ucr.edu> for suggesting it). - - lots of cosmetic changes have been made. - -Changes from version 0.3 to version 0.4 -======================================= - - Three new mount options are supported: `check', `sync' and `sb=#'. - `check' tells the kernel code to make more consistency checks - when the file system is mounted. Currently, the kernel code checks - that the blocks and inodes bitmaps are consistent with the free - blocks and inodes counts. More checks will be added in future - releases. - `sync' tells the kernel code to use synchronous writes when updating - an inode, a bitmap, a directory entry or an indirect block. This - can make the file system much slower but can be a big win for files - recovery in case of a crash (and we can now say to the BSD folks - that Linux also supports synchronous updates :-). - `sb=#' tells the kernel code to use an alternate super block instead - of its master copy. `#' is the number of the block (counted in - 1024 bytes blocks) which contains the alternate super block. - An ext2 file system typically contains backups of the super block - at blocks 8193, 16385, and so on. - - I have change the meaning of the valid flag used by e2fsck. it - now contains the state of the file system. If the kernel code - detects an inconsistency while the file system is mounted, it flags - it as erroneous and e2fsck will detect that on next run. - - The super block now contains a mount counter. This counter is - incremented each time the file system is mounted read/write. When - this counter becomes bigger than a maximal mount counts (also stored - in the super block), e2fsck checks the file system, even if it had - been unmounted cleanly, and resets this counter to 0. - - File attributes are now supported. One can associate a set of - attributes to a file. Three attributes are defined: - `c': the file is marked for automatic compression, - `s': the file is marked for secure deletion: when the file is - deleted, its blocks are zeroed and written back to the disk, - `u': the file is marked for undeletion: when the file is deleted, - its contents are saved to allow a future undeletion. - Currently, only the `s' attribute is implemented in the kernel - code. Support for the other attributes will be added in a future - release. - - a few bugs related to times updates have been fixed by Bruce - Evans and me. - - a bug related to the links count of deleted inodes has been fixed. - Previous versions used to keep the links count set to 1 when a file - was deleted. The new version now sets links_count to 0 when deleting - the last link. - - a race condition when deallocating an inode has been fixed by - Stephen Tweedie. - diff --git a/fs/ext2/acl.c b/fs/ext2/acl.c index 213148c36ebe..6af2f4130290 100644 --- a/fs/ext2/acl.c +++ b/fs/ext2/acl.c @@ -194,8 +194,7 @@ ext2_get_acl(struct inode *inode, int type) acl = NULL; else acl = ERR_PTR(retval); - if (value) - kfree(value); + kfree(value); if (!IS_ERR(acl)) { switch(type) { @@ -262,8 +261,7 @@ ext2_set_acl(struct inode *inode, int type, struct posix_acl *acl) error = ext2_xattr_set(inode, name_index, "", value, size, 0); - if (value) - kfree(value); + kfree(value); if (!error) { switch(type) { case ACL_TYPE_ACCESS: diff --git a/fs/ext2/balloc.c b/fs/ext2/balloc.c index 6591abef64d0..bb6908066494 100644 --- a/fs/ext2/balloc.c +++ b/fs/ext2/balloc.c @@ -624,76 +624,3 @@ unsigned long ext2_bg_num_gdb(struct super_block *sb, int group) return EXT2_SB(sb)->s_gdb_count; } -#ifdef CONFIG_EXT2_CHECK -/* Called at mount-time, super-block is locked */ -void ext2_check_blocks_bitmap (struct super_block * sb) -{ - struct buffer_head *bitmap_bh = NULL; - struct ext2_super_block * es; - unsigned long desc_count, bitmap_count, x, j; - unsigned long desc_blocks; - struct ext2_group_desc * desc; - int i; - - es = EXT2_SB(sb)->s_es; - desc_count = 0; - bitmap_count = 0; - desc = NULL; - for (i = 0; i < EXT2_SB(sb)->s_groups_count; i++) { - desc = ext2_get_group_desc (sb, i, NULL); - if (!desc) - continue; - desc_count += le16_to_cpu(desc->bg_free_blocks_count); - brelse(bitmap_bh); - bitmap_bh = read_block_bitmap(sb, i); - if (!bitmap_bh) - continue; - - if (ext2_bg_has_super(sb, i) && - !ext2_test_bit(0, bitmap_bh->b_data)) - ext2_error(sb, __FUNCTION__, - "Superblock in group %d is marked free", i); - - desc_blocks = ext2_bg_num_gdb(sb, i); - for (j = 0; j < desc_blocks; j++) - if (!ext2_test_bit(j + 1, bitmap_bh->b_data)) - ext2_error(sb, __FUNCTION__, - "Descriptor block #%ld in group " - "%d is marked free", j, i); - - if (!block_in_use(le32_to_cpu(desc->bg_block_bitmap), - sb, bitmap_bh->b_data)) - ext2_error(sb, "ext2_check_blocks_bitmap", - "Block bitmap for group %d is marked free", - i); - - if (!block_in_use(le32_to_cpu(desc->bg_inode_bitmap), - sb, bitmap_bh->b_data)) - ext2_error(sb, "ext2_check_blocks_bitmap", - "Inode bitmap for group %d is marked free", - i); - - for (j = 0; j < EXT2_SB(sb)->s_itb_per_group; j++) - if (!block_in_use(le32_to_cpu(desc->bg_inode_table) + j, - sb, bitmap_bh->b_data)) - ext2_error (sb, "ext2_check_blocks_bitmap", - "Block #%ld of the inode table in " - "group %d is marked free", j, i); - - x = ext2_count_free(bitmap_bh, sb->s_blocksize); - if (le16_to_cpu(desc->bg_free_blocks_count) != x) - ext2_error (sb, "ext2_check_blocks_bitmap", - "Wrong free blocks count for group %d, " - "stored = %d, counted = %lu", i, - le16_to_cpu(desc->bg_free_blocks_count), x); - bitmap_count += x; - } - if (le32_to_cpu(es->s_free_blocks_count) != bitmap_count) - ext2_error (sb, "ext2_check_blocks_bitmap", - "Wrong free blocks count in super block, " - "stored = %lu, counted = %lu", - (unsigned long)le32_to_cpu(es->s_free_blocks_count), - bitmap_count); - brelse(bitmap_bh); -} -#endif diff --git a/fs/ext2/ialloc.c b/fs/ext2/ialloc.c index e2d6208633a7..74714af4ae69 100644 --- a/fs/ext2/ialloc.c +++ b/fs/ext2/ialloc.c @@ -700,43 +700,3 @@ unsigned long ext2_count_dirs (struct super_block * sb) return count; } -#ifdef CONFIG_EXT2_CHECK -/* Called at mount-time, super-block is locked */ -void ext2_check_inodes_bitmap (struct super_block * sb) -{ - struct ext2_super_block * es = EXT2_SB(sb)->s_es; - unsigned long desc_count = 0, bitmap_count = 0; - struct buffer_head *bitmap_bh = NULL; - int i; - - for (i = 0; i < EXT2_SB(sb)->s_groups_count; i++) { - struct ext2_group_desc *desc; - unsigned x; - - desc = ext2_get_group_desc(sb, i, NULL); - if (!desc) - continue; - desc_count += le16_to_cpu(desc->bg_free_inodes_count); - brelse(bitmap_bh); - bitmap_bh = read_inode_bitmap(sb, i); - if (!bitmap_bh) - continue; - - x = ext2_count_free(bitmap_bh, EXT2_INODES_PER_GROUP(sb) / 8); - if (le16_to_cpu(desc->bg_free_inodes_count) != x) - ext2_error (sb, "ext2_check_inodes_bitmap", - "Wrong free inodes count in group %d, " - "stored = %d, counted = %lu", i, - le16_to_cpu(desc->bg_free_inodes_count), x); - bitmap_count += x; - } - brelse(bitmap_bh); - if (percpu_counter_read(&EXT2_SB(sb)->s_freeinodes_counter) != - bitmap_count) - ext2_error(sb, "ext2_check_inodes_bitmap", - "Wrong free inodes count in super block, " - "stored = %lu, counted = %lu", - (unsigned long)le32_to_cpu(es->s_free_inodes_count), - bitmap_count); -} -#endif diff --git a/fs/ext2/super.c b/fs/ext2/super.c index 3c0c7c6a5b44..e4ed4b31a433 100644 --- a/fs/ext2/super.c +++ b/fs/ext2/super.c @@ -281,7 +281,7 @@ static unsigned long get_sb_block(void **data) enum { Opt_bsd_df, Opt_minix_df, Opt_grpid, Opt_nogrpid, Opt_resgid, Opt_resuid, Opt_sb, Opt_err_cont, Opt_err_panic, - Opt_err_ro, Opt_nouid32, Opt_check, Opt_nocheck, Opt_debug, + Opt_err_ro, Opt_nouid32, Opt_nocheck, Opt_debug, Opt_oldalloc, Opt_orlov, Opt_nobh, Opt_user_xattr, Opt_nouser_xattr, Opt_acl, Opt_noacl, Opt_xip, Opt_ignore, Opt_err, Opt_quota, Opt_usrquota, Opt_grpquota @@ -303,7 +303,6 @@ static match_table_t tokens = { {Opt_nouid32, "nouid32"}, {Opt_nocheck, "check=none"}, {Opt_nocheck, "nocheck"}, - {Opt_check, "check"}, {Opt_debug, "debug"}, {Opt_oldalloc, "oldalloc"}, {Opt_orlov, "orlov"}, @@ -376,13 +375,6 @@ static int parse_options (char * options, case Opt_nouid32: set_opt (sbi->s_mount_opt, NO_UID32); break; - case Opt_check: -#ifdef CONFIG_EXT2_CHECK - set_opt (sbi->s_mount_opt, CHECK); -#else - printk("EXT2 Check option not supported\n"); -#endif - break; case Opt_nocheck: clear_opt (sbi->s_mount_opt, CHECK); break; @@ -503,12 +495,6 @@ static int ext2_setup_super (struct super_block * sb, EXT2_BLOCKS_PER_GROUP(sb), EXT2_INODES_PER_GROUP(sb), sbi->s_mount_opt); -#ifdef CONFIG_EXT2_CHECK - if (test_opt (sb, CHECK)) { - ext2_check_blocks_bitmap (sb); - ext2_check_inodes_bitmap (sb); - } -#endif return res; } |