Add test to make sure the ext2 superblock structure is 1024 bytes

[tools/e2fsprogs.git] / lib / ext2fs / ChangeLog

2007-05-31  Theodore Tso  <tytso@mit.edu>

        * tst_super_size.c (main): Add sanity check to make sure the
                supersize structure is 1024 bytes.

        * ext2_fs.h: Reserve superblock field for the raid stripe width.

2007-05-31  Kalpak Shah <kalpak@clusterfs.com>

        * ext2_fs.h: Reserve superblock fields and INCOMPAT feature flag
                for multiple mount protection protection.

2007-05-23  Theodore Tso  <tytso@mit.edu>

        * icount.c (ext2fs_icount_fetch, ext2fs_icount_increment, setup):
                Remove unusued variables and labels.

        * tst_bitops.c, tst_types.c: Fix gcc -Wall warnings.

2007-05-18  Theodore Tso  <tytso@mit.edu>

        * openfs.c (ext2fs_open2): Set fs->stride from the superblock's
                s_raid_stride value.

        * ext2_fs.h: Allocate space for RAID stride in the superblock.

2007-05-08  Eric Sandeen <sandeen@redhat.com>

        * ext2_fs.h (inode_uid, inode_gid): The inode_uid() and
                inode_gid() macros will automatically add the high bits
                when reading uid/gid, on platforms that support it.

2007-04-19  Theodore Tso  <tytso@mit.edu>

        * ext2_fs.h, swapfs.c (ext2fs_swap_inode_full): Rename the
                l_i_reserved1 field to be l_i_version (to be used for the
                high 32 bits of the 64-bit inode version number).

2007-04-18  Theodore Tso  <tytso@mit.edu>

        * getsize.c (ext2fs_get_device_size): Make sure we don't leak a
                file descriptor in some error cases.

2007-04-14  Theodore Tso  <tytso@mit.edu>

        * swapfs.c (ext2fs_swap_inode_full): Fix a problem byte-swapping 
                fast symlinks inodes that contain extended attributes.
                (Addresses Red Hat Bugzilla #232663, LTC bugzilla #27634)

2007-04-06  Theodore Tso  <tytso@mit.edu>

        * icount.c (ext2fs_create_icount_tdb): Add support for using TDB
                to store the icount data, so we don't run out of memory
                when checking really large filesystems.

        * ext2_err.et.in: Add new TDB error codes.

        * icount.c, Makefile.in: Add a regression test suite for the
                icount abstraction.

2007-04-04  Jim Garlick <garlick@llnl.gov>

        * inode.c (ext2fs_write_new_inode): Fix memory leak.

2007-04-04  Theodore Tso  <tytso@mit.edu>

        * tdb.c, tdb.h, Makefile.in: Add the tdb library from Samba into
                ext2fs.

        * tst_types.c: Add #include's to avoid compiler warnings.

2007-04-02  Theodore Tso  <tytso@mit.edu>

        * icount.c (get_icount_el): Prevent floating point precision
                errors on really big filesystems from causing the search
                interpolation algorithm loop forever.  (Addresses Debian
                Bug: #411838)

2007-03-21  Theodore Tso  <tytso@mit.edu>

        * imager.c (ext2fs_image_inode_write), inode.c
                (ext2fs_write_inode_full): Fix memory leak on error return
                (when the inode table is missing).

2006-11-30  Theodore Tso  <tytso@mit.edu>

        * ext2_fs.h (struct ext4_group_desc): Fix missing bg_pad which
                made the structure too small.

2006-11-14  Theodore Tso  <tytso@mit.edu>

        * namei.c (open_namei): Rename internal variable basename to
                base_name to prevent gcc -Wall complaints.

        * kernel-jbd.h (tid_gt, tid_geq): Add function declaration to
                avoid gcc -Wall complaints.

        * ext2_ext_attr.h (EXT2_EXT_ATTR_PAD): Make unsigned to fix gcc
                -Wall complaints.

        * bitops.h (ext2fs_test_bit): Add missing const to fix gcc -Wall
                complaint.

        * ext2fs.h (ext2fs_get_mem, ext2fs_free_mem): Avoid type punning
                which causes problems on the ARM processor.  (Addresses
                Debian Bug: #397044)

2006-11-12  Theodore Tso  <tytso@mit.edu>

        * ext2_fs.h (EXT2_FLAG_SOFTSUPP_FEATURES), openfs.c
                (ext2fs_open2): Add flag which indicates that it's OK to
                open a filesystem which has features which are only
                partially supported by e2fsprogs.

        * ext3_extents.h, ext2fs.h: Check in ext4 extent headers into the
                source tree, in preparation for adding full extent support.

        * unix_io.c (unix_flush): Allow offsets greater than 2G.
                (Addresses SourceForge Bug #1547922)

2006-11-11  Theodore Tso  <tytso@mit.edu>

        * dirhash.c (str2hashbuf, ext2fs_dirhash): Add support for
                calculating the unsigned version of the directory hash.

        * initialize.c (ext2fs_initialize): Set the dirhash
                signed/unsigned hint in s_flags.

        * swapfs.c (ext2fs_swap_super): Byte swap the s_flags superblock
                field.

        * ext2_fs.h: Define a new superblock field, s_flags, which is used
                to store a signed vs. unsigned dirhash hint.  Define new
                HTREE hash algorithm numbers to pass to userspace if the
                unsigned algorithm are required.

        * swapfs.c (ext2fs_swap_super):
          ext2_fs.h: Add definition of EXT4_FEATURE_RO_COMPAT_EXTRA_ISIZE,
                which adds s_min_extra_isize and s_want_extra_isize fields
                to superblock, which allow specifying the minimum and 
                desired i_extra_isize fields in large inodes 
                (for nsec+epoch timestamps, potential other uses).  
                Needs RO_COMPAT flag handling, needs e2fsck support, 
                patch complete, little testing.

        * swapfs.c (ext2fs_swap_super): 
          ext2_fs.h: Add definition of EXT4_FEATURE_INCOMPAT_64BIT, 
                  which adds supports for 64-bit block count fields in the 
                  superblock (s_blocks_count_hi, s_free_blocks_count_hi),
                  large group descriptors (s_desc_size), extents with high 
                  16 bits (ee_start_hi, ei_leaf_hi), inode ACL (i_file_acl_hi)

        * ext2_fs.h: Add definition of EXT4_FEATURE_RO_COMPAT_DIR_NLINK,
                which allow directories to have > 65000 subdirectories
                (i_nlinks) by setting i_nlinks = 1 for such directories.
                RO_COMPAT protects old filesystems from unlinking such
                directories incorrectly and losing all files therein.
        
        * swapfs.c (ext2fs_swap_group_desc):  
          ext2_fs.h: Add definition of EXT4_FEATURE_RO_COMPAT_GDT_CSUM,
                which adds a crc16 checksum in the group descriptor,
                (s_uuid[16] | __u32 group | ext3_group_desc
                (excluding gd_checksum itself)).  This allows the kernel
                to more safely manage UNINIT groups.  Also adds an 
                bg_itable_unsued which indicates how many inodes are 
                uninitialized in the block group.

        * swapfs.c (ext2fs_swap_inode_full): 
          ext2_fs.h: Add definition of EXT4_FEATURE_RO_COMPAT_HUGE_FILE,
                which changes i_blocks to be in units of s_blocksize units
                instead of 512-byte sectors, use l_i_frag and l_i_fsize as
                i_blocks_hi.

2006-10-02  Eric Sandeen <esandeen@sandeen.net>

        * getsize.c (ext2fs_get_device_size): Check to make sure that the
                number of blocks doesn't overflow the retblocks return
                parameter for regular files using stat64().

2006-10-01  Theodore Tso  <tytso@mit.edu>

        * bitops.h (ext2fs_swab32): Only include ext2fs_swab32() if
                EXT2FS_ENABLE_SWAPFS is defined.

2006-08-30  Eric Sandeen <esandeen@redhat.com>

        * initialize.c (ext2fs_initialize): Make sure inode count does
                not overflow 32 bits.

2006-08-30  Eric Sandeen <esandeen@redhat.com>

        * alloc_tables.c (ext2fs_allocate_group_table):
        * check_desc.c (ext2fs_check_desc):
                Use new inlines to calculate group first & last blocks.
        * ext2fs.h:
                Create new inlines to calculate first/last group blocks.

2006-08-30  Eric Sandeen <esandeen@redhat.com>

        * bmove.c (process_block):
        * getsize.c (main):
        * icount.c (ext2fs_create_icount2, insert_icount_el):
        * tst_badblocks.c (print_list, validate_test_seq, do_test_seq):
        * tst_badblocks.c (invalid_proc):
        * tst_getsize.c (main):
        * tst_iscan.c (check_map):
        * unix_io.c (raw_read_blk, unix_read_blk):
        * write_bb_file.c (ext2fs_write_bb_FILE): Fix printf formats.

2006-08-30  Eric Sandeen <esandeen@redhat.com>

        * closefs.c (write_backup_super):
        * initialize.c (ext2fs_initialize): Remove unused variables.

2006-08-30  Eric Sandeen <esandeen@redhat.com>

        * check_desc.c (ext2fs_check_desc): avoid overflows when iterating
                over group descriptors on very large filesystems.

2006-08-30  Theodore Tso  <tytso@mit.edu>

        * bitmaps.c (ext2fs_set_bitmap_padding): Fix potential overflow
                problems when the number of blocks is close to 2**31.

        * ext2fs.h (ext2fs_div_ceil): Add new function which safely
                calculates an integer division where the result is always
                rounded up while avoiding overflow errors.

        * initialize.c (calc_reserved_gdt_blocks, ext2fs_initialize):
        * openfs.c (ext2fs_open2): Use ext2fs_div_ceil() instead of a 
                using an open-coded expression which was subject to 
                overflows.

2006-08-06  Andreas Dilger <adilger@clusterfs.com>

        * bitops.h (ext2fs_cpu_to_le32, ext2fs_le64_to_cpu,
                ext2fs_swab64): Add 64-bit byte swapping functions

2006-08-05  Theodore Tso  <tytso@mit.edu>

        * ext2_fs.h (EXT4_EXTENTS_FL): Rename EXT3_EXTENTS_FL to
                EXT4_EXTENTS_FL, and add EXT4_EXTENTS_FL to user visible
                flags list.

2006-07-15  Theodore Tso  <tytso@mit.edu>

        * ext2fs.h: Remove unneeded #ifdef since EXT2_DYNAMIC_REV is
                always defined in the e2fsprogs-provided ext2_fs.h

2006-05-21  Theodore Tso  <tytso@mit.edu>

        * openfs.c (ext2fs_open2): Fix type warning problem with sizeof()

2006-05-12  Theodore Tso  <tytso@mit.edu>

        * alloc_tables.c (ext2fs_allocate_group_table): When allocating
                space for the RAID filesystems with the stride parameter,
                place each portion of the group's inode table right up
                after the superblock (if present) in order to minimize
                fragmentation of the freespace.

2006-05-08  Theodore Tso  <tytso@mit.edu>

        * rw_bitmaps.c (write_bitmaps, read_bitmaps): Added support for
                lazy blockgroups.  If a block group has flags indicating
                that its block or inode data structures have not been
                initialized, skip reading or writing that portion of the
                bitmap.

        * inode.c (ext2fs_open_inode_scan, ext2fs_read_inode_full): When
                scanning a filesystem with lazy blockgroups, skip
                uninitialized portions of the inode table when iterating
                over the block group.

        * swapfs.c (ext2fs_swap_group_desc): Byte swap the bg_flags field.

        * ext2fs.h: Define the a new internal flag, EXT2_SF_DO_LAZY, so
                that the inode interator knows compat_lazy_bg feature is
                enabled.  Declare that this version of e2fsprogs supports
                the EXT2_FEATURE_COMPAY_LAZY_BG feature.

        * ext2_fs.h (struct ext2_group_desc): Use the bg_pad field for
                bg_flags, and define the flags EXT2_BG_INODE_UNINIT and
                EXT2_BG_BLOCK_UNINIT.  These flags are only honored if
                EXT2_FEATURE_COMPAT_LAZY_BG feature is enabled (also
                added).

2006-04-23  Theodore Ts'o  <tytso@mit.edu>

        * rw_bitmaps.c (write_bitmaps, ext2fs_write_inode_bitmap,
                ext2fs_write_block_bitmap, ext2fs_write_bitmaps): Reduce
                disk seeks by writing the inode and block bitmaps in an
                interleaved fashion.

2006-04-09  Theodore Ts'o  <tytso@mit.edu>

        * ext2_types.h.in, Makefile.in, tst_types.c: Use the asm_types.h
                file to define the __[us]{8,16,32,64} types.  Add a
                tst_types program to make sure the types are correct.

2006-04-04  Theodore Ts'o  <tytso@mit.edu>

        * mkjournal.c (ext2fs_add_journal_inode): If the filesystem is
                opened in exclusive mode, then device will be busy by
                definition, so don't return -EBUSY.  This caused mke2fs -j
                to fail on the 1.39-WIP (29-Mar-2006) release.  (Addresses
                Debian Bug: #360652)

2006-03-29  Theodore Ts'o  <tytso@mit.edu>

        * bitops.h (ext2fs_set_bit, ext2fs_clear_bit): Fix the constraints
                so that GCC knows that the ext2fs_set/clear_bit reads and
                writes the data.

2006-03-25  Theodore Ts'o  <tytso@mit.edu>

        * Makefile.in: Check the bitfield operations much more carefully,
                and arrange to have tst_bitops run from "make check"

        * tst_bitops.c: Enahce tst_bitops program so that it is much more
                thorough in testing bit optations.
        
        * bitops.h: Add new functions ext2fs_fast_set_bit() and
                ext2fs_fast_clear_bit() and make the x86 functions 32-bit
                clear.  Change the fast inode and block mark/unmark
                functions to use ext2fs_fast_set/get_bit()

2006-03-18  Theodore Ts'o  <tytso@mit.edu>

        * ext2fs.h (EXT2_FLAG_EXCLUSIVE): Define new flag which requests
                that the io_channel be opened in exclusive mode.

        * openfs.c (ext2fs_open2), initialize.c (ext2fs_initialize): If
                EXT2_FLAG_EXCLUSIVE is passed to ext2fs_open or
                ext2fs_initialize, then pass IO_FLAG_EXCLUSIVE to the
                io_channel open routine.

        * ext2_io.h (IO_FLAG_EXCLUSIVE), unix_io.c (unix_open): Add new
                io_channel open flag, IO_FLAG_EXCLUSIVE, which requests
                that the device be opened in exclusive (O_EXCL) mode.

        * ext2fs.h: Fix documentation so that BLOCK_FLAG_TRAVERSE is
                BLOCK_FLAG_DEPTH_TRAVERSE.  (Addresses Debian Bug #351268)

2006-03-17  Theodore Ts'o  <tytso@mit.edu>

        * initialize.c (calc_reserved_gdt_blocks): Fix a signed vs
                unsigned problem which caused mke2fs -O resize_inode to
                bomb out on large filesystems.  (Addresses Debian Bug
                #346580)

        * ext2_fs.h (EXT2_IOC_GETVERSION_NEW, EXT2_IOC_SETVERSION_NEW,
                EXT2_IOC_GROUP_EXTEND, EXT2_IOC_GROUP_ADD): Add ioctl
                definitions

2005-12-10  Theodore Ts'o  <tytso@mit.edu>

        * Makefile.in: Add a dependency to make sure that the
                subdirectories are created before creating all of the
                object files.

2005-12-10  Theodore Ts'o  <tytso@mit.edu>

        * res_gdt.c (ext2fs_create_resize_inode): Fix type-punning warning.

        * read_bb_file.c (ext2fs_read_bb_FILE): Use a data structure
                instead of stuffing a function pointer dirctly into a void
                pointer, since that isn't portable.

        * mkjournal.c (ext2fs_add_journal_inode): Fix possiblely
                uninitialized use of variable warning.

        * initialize.c (calc_reserved_gdt_blocks): Fix signed vs. unsigned
                type complaint.

        * ext2fs.h: Make the type of the 'now' field to be time_t to avoid
                gcc -Wall complaints.

        * bitops.h (ext2fs_find_first_bit_set): Fix signed vs unsigned
                type error.

        * tst_badblocks.c (file_test_invalid): Add test which confirms
                proper detection of invalid block numbers in
                ext2fs_read_bb_FILE().

2005-11-20  Theodore Ts'o  <tytso@mit.edu>

        * bitops.h: We no longer have the sparc assembly code in the
                header file any more, so we shouldn't set
                _EXT2_HAVE_AS_BITOPS_.  This would break compiles on the
                sparc architectures when using gcc.
        
2005-11-13  Theodore Ts'o  <tytso@mit.edu>

        * ext2fs.h: Add #include <string.h> since the inline functions use
                memcpy().  (Addresses Sourceforge Bug #1251062)

2005-11-09  Theodore Ts'o  <tytso@mit.edu>

        * Fix a bug when writing an external journal device on an big
                endian machine (such as a S/390), where when the number of
                block groups is zero, we never end up writing out the
                primary superblock at all.

2005-09-24  Theodore Ts'o  <tytso@mit.edu>

        * ext2fs.h, bb_inode.c, closefs.c, initialize.c, mkdir.c,
                mkjournal.c, res_gdt.c:  If fs->now is non-zero, use that
                as the time instead of the system time when setting
                various filesystem fields (last modified time, last write
                time, etc.)

2005-08-28  Matthias Andree <matthias.andree@gmx.de>

        * Fix compiler warnings about missing memcpy prototypes.

2005-07-25  Theodore Ts'o  <tytso@mit.edu>

        * test_io.c (safe_getenv): Pass in zero to the unusued arguments
                of prctl(PR_GET_DUMPABLE) to avoid false positives from
                valgrind.

2005-07-19  Theodore Ts'o  <tytso@mit.edu>

        * mkjournal.c (ext2fs_add_journal_inode): Check for the case where
                the filesystem is apparently not mounted, but the device
                is still busy.  This can happen when the luser doesn't
                bother to mount /proc and has a bogus /etc/mtab, but still
                wants to mount the filesystem before using tune2fs(?!?).
                Add a safety check to save him from his own stupidity, at
                least on 2.6 kernels.  (Addresses Debian Bug #319002)

2005-07-09  Andreas Dilger <adilger@clusterfs.com>

        * getsize.c (ext2fs_get_device_size): Use fstat/fstat64 to get
                size of regular files.  Fix file descriptor leaks in error
                paths.

2006-06-30  Theodore Ts'o  <tytso@mit.edu>

        * Release of E2fsprogs 1.38

2005-06-30  Theodore Ts'o  <tytso@mit.edu>

        * bitops.h, bitops.c (ext2fs_set_bit, ext2fs_clear_bit,
                ext2fs_test_bit): Change these function prototypes to be
                unsigned int's.  Negative bit numbers were never allowed
                (and never made any sense), so this should be a safe
                change.  This is needed to allow safe use of block numbers
                greater than or equal to 2**31.

2005-06-27  Stephen Tweedie  <sct@redhat.com>

        * ext2fs.h (ext2fs_resize_mem): Fix C99 strict type aliasing
                problems.  Addresses Red Hat Bugzilla #161183.

2005-06-19  Theodore Ts'o  <tytso@mit.edu>

        * getsectsize.c (BLKSSZGET): Clean up test for when to manually
                define the BLKSSZGET ioctl.

2005-05-29  Theodore Ts'o  <tytso@mit.edu>

        * ismounted.c (ext2fs_check_mount_point): Add test to see if the
                device appears to be busy; this only works on Linux 2.6+
                systems, but provides some additional bullet-proofing in
                those cases.

2005-05-08  Theodore Ts'o  <tytso@mit.edu>

        * test_io.c (safe_getenv): Fix bug so it would fetch the right
                environment variable.

2005-04-09  Theodore Ts'o  <tytso@mit.edu>

        * inode.c (ext2fs_write_new_inode), 
                ind_block.c (ext2fs_read_ind_block): Add missing return
                value in error return case.  (Otherwise we return garbage
                instead of the error code.)

2005-03-31  Theodore Ts'o  <tytso@mit.edu>

        * test_io.c (test_open): If called by a setuid/setgid or an
                otherwise privileged program, be paranoid and ignore the
                TEST_IO_* environment variables.

2005-03-21  Theodore Ts'o  <tytso@mit.edu>

        * Release of E2fsprogs 1.37

2005-03-21  Theodore Ts'o  <tytso@mit.edu>

        * ext2_ext_attr.h (EXT2_XATTR_LEN, EXT2_XATTR_SIZE): Add new
                convenience cpp macros.

2005-03-20  Theodore Ts'o  <tytso@mit.edu>

        * mkdir.c (ext2fs_mkdir): Call ext2fs_write_new_inode() instead of
                ext2fs_write_inode().

        * inode.c (ext2fs_write_new_inode): New function which should be
                used when the caller is writing an inode for the first
                time.  It makes sure that the extra portion of the large
                inode is initialized properly.

2005-03-18  Theodore Ts'o  <tytso@mit.edu>

        * Makefile.in: Fix clean target to remove tst_getsectsize.

        * getsize.c (ext2fs_get_device_size): Check to see if the number
                of blocks is greater than 2**32 when we are doing a binary
                search to determine the device size.  Thanks to Stephen
                Tweedie for the patch.
        
2006-02-05  Theodore Ts'o  <tytso@mit.edu>

        * Release of E2fsprogs 1.36

2005-02-05  Theodore Ts'o  <tytso@mit.edu>

        * Makefile.in: Remove ext2fs.pc on a "make distclean"

2005-02-04  Theodore Ts'o  <tytso@mit.edu>

        * Makefile.in (clean): Remove tst_getsize when doing a make clean

2005-02-03  Theodore Ts'o  <tytso@mit.edu>

        * bitops.c: Make the generic functions more efficient.

        * bitops.h: Drop SPARC assembly code. It's less efficient than GCC
                3.4 compiled code and also triggers nasty compiler
                warnings on sparc64.  Thanks to Matthias Andree for his
                analysis and suggestion.
        
2005-01-27  Theodore Ts'o  <tytso@mit.edu>

        * res_gdt.c (ext2fs_create_resize_inode): Create the resize inode
                even if s_reserved_gdt_blocks is zero.

2005-01-26  Theodore Ts'o  <tytso@mit.edu>

        * ext2fs.pc.in: Add pkg-config files.

2005-01-25  Theodore Ts'o  <tytso@mit.edu>

        * ext2fs.h: Add definition of struct ext2_inode_large

        * ext2_fs.h: Add new function prototypes

        * ext_attr.c (ext2fs_read_ext_attr, ext2fs_write_ext_attr): The
                ext2fs_swap_ext_attr() has been moved to swapfs.c, and
                given a new argument, has_header.

        * swapfs.c (ext2fs_swap_ext_attr): Moved from ext_attr.c, and
                takes an argument which controls whether or not there is
                an EA header which needs to be byteswaped.
                (ext2fs_swap_inode_full): New function which byte-swaps
                the EA in inode.

        * inode.c (ext2fs_get_next_inode_full, ext2fs_read_inode_full,
                ext2fs_write_inode_full): New functions, originally from
                Alex Tomas, but which needed to be substantially fixed so
                that the tests wouldn't cause major stack overwrite bugs
                in byte-swapping is enabled.
        
2005-01-18  Theodore Ts'o  <tytso@mit.edu>

        * Makefile.in: Fix the kernel compile-time echo commands to be
                consistent and portable

2005-01-07  Theodore Ts'o  <tytso@mit.edu>

        * unlink.c (ext2fs_unlink): If both the name and the inode number
                are unspecified, then return an error, so that we don't do
                something surprising such as unconditionally deleting the
                first directory entry.
                (unlink_proc): Delete directory entries by coalescing it
                with the previous entry, to avoid directory fragmentation.

2005-01-06  Theodore Ts'o  <tytso@mit.edu>

        * version.c (ext2fs_parse_version_string): Change parsing
                algorithm so that version strings such as 1.36-rc1 returns
                a non-surprising result (i.e., 136, and not 1361).

2005-01-05  Theodore Ts'o  <tytso@mit.edu>

        * block.c (block_iterate_ind, block_iterate_dind,
                block_iterate_tind): Move the code which byte swaps and
                read/writes indirect blocks to ext2fs_{read,write}_ind_block.
                This saves 400 bytes, and we need them for the
                resize_inode handling. 

        * ind_block.c (ext2fs_read_ind_block, ext2fs_write_ind_block): New
                functions.

        * res_gdt.c (ext2fs_create_resize_inode): Use 
                ext2fs_{read,write}_ind_block so that byte swapping is
                handled on big-endian systems.

        * dupfs.c (ext2fs_dup_handle): Make sure the new filesystem handle
                has its own copy of the orig_super data structure.  (This
                is a better way of fixing a double-free problem in
                resize2fs which Fedora attempted to fix in 
                e2fsprogs-1.35-double_free.patch.   Addresses Red Hat
                Bugzilla #132707.)
        
2004-12-23  Theodore Ts'o  <tytso@mit.edu>

        * inode.c (ext2fs_flush_icache): When flushing the icache, clear
                the last-read block information as well.

        * ext2fs.h (BMAP_SET), bmap.c (ext2fs_bmap): Add support for new
                flag, BMAP_SET, which allows the caller to set a
                particular logical->physical block mapping.

        * ext2_err.et.in (EXT2_ET_SET_BMAP_NO_IND): New error code

        * initialize.c (calc_reserved_gdt_blocks): #ifdef out all
                debugging printf statements.
        
        * res_gdt.c (ext2fs_create_resize_inode): Return
                EXT2_ET_RESIZE_INODE_CORRUPT if the resize inode is not
                what we expect.  #ifdef out all debugging printf
                statements.

        * ext2_err.et.in (EXT2_ET_RESIZE_INODE_CORRUPT): Add new error code.

2004-12-22  Theodore Ts'o  <tytso@mit.edu>

        * swapfs.c (ext2fs_swap_super): Byteswap the reserved_gdt_blocks
                superblocks field.

2004-12-15  Theodore Ts'o  <tytso@mit.edu>

        * sparse.c (ext2fs_list_backups, ext2fs_bg_has_super),
                res_gdt.c (list_backups), closefs.c (ext2fs_bg_has_super),
                ext2fs.h: Move ext2fs_list_backups() to res_gdt.c, and
                ext2fs_bg_has_super() back to closefs.c.  There's no
                reason for the new file, since list_backups() isn't being
                used by any other functions, and can be made static, and
                all users of the ext2fs filesystem will have to call
                ext2fs_close() anyway.

2004-12-15  Theodore Ts'o  <tytso@mit.edu>

        * Applied resize inode patch from Andreas Dilger

        * res_gdt.c (ext2fs_create_resize_inode): New function that
                creates the resize inode.

        * initialize.c (ext2fs_initialize): Reserve space for the resize
                inode.

        * ext2fs.h (EXT2_LIB_FEATURE_COMPAT_SUPP): Add
                EXT2_FEATURE_COMPAT_RESIZE_INODE to the list of supported
                capabilities.
                Add function prototypes for res_gdt.c and sparse.c.

        * closefs.c (ext2fs_super_and_bgd_loc): Take the reserved blocks
                into account when calculating the number of overhead
                blocks.

        * closefs.c (ext2fs_bg_has_super, test_root), sparse.c: Move these
                functions to the new file sparse.c

        * alloc_sb.c (ext2fs_reserve_super_and_bgd): Reserve the blocks
                saved in the resize inode as being in use.

        * ext2_err.et.in (EXT2_ET_RES_GDT_BLOCKS): Add new error code.

        * Makefile.in (srcdir): Add res_gdt.c and sparse.c to the ext2fs
                library.

2004-12-14  Theodore Ts'o  <tytso@mit.edu>

        * Makefile.in: Use Linux-kernel-style makefile output for "make
                install"

        * Makefile.in (installdirs): Use $(MKINSTALLDIRS) macro
                Update dependencies.

2004-11-30  Theodore Ts'o  <tytso@mit.edu>

        * unix_io.c (unix_set_option): Add support for the offset option.

        * test_io.c (test_set_option): Add support for the set_option method.

        * ext2_io.h: Add new io_channel method, set_option(), and change
                io_channel_write_byte() from a macro to a library function.

        * ext2fs.h, openfs.c(ext2fs_open2): New version of ext2fs_open
                which adds a new parameter, io_options.
                (ext2fs_open): If there is a question mark in the
                filename, and no io_options are specified, assumed that
                the text following the question mark are io_options.
        
        * io_manager.c, Makefile.in: New source file which contains
                high-level functions for the io_channel layer.

        * freefs.c (ext2fs_free): Make sure we don't free the io_channel
                if image_io is NULL.

        * Makefile.in: Use Linux-kernel-style makefile output to make it
                easier to see errors/warnings.

2004-11-29  Theodore Ts'o  <tytso@mit.edu>

        * ext2_fs.h (EXT2_EXTENTS_FL, EXT3_FEATURE_INCOMPAT_EXTENTS, 
                EXT2_MAX_BLOCK_LOG_SIZE): Add definition for extent
                feature and inode flag.  Change maximum allowable block
                size to be 65536.

2004-10-08  Theodore Ts'o  <tytso@mit.edu>

        * getsize.c (ext2fs_get_device_size): Add support for Windows
                9x/NT under Cygwin.  Thanks to Sam Robb
                (samrobb@users.sourceforge.net) for pointing this and the
                suggested code patch.

2004-09-17  Theodore Ts'o  <tytso@mit.edu>

        * getsize.c: Clean up header #include's.

        * llseek.c (ext2fs_llseek): On non-linux systems, use lseek64() if
                it is present.  (Addresses Debian bug #269044)

2004-07-28  Theodore Ts'o  <tytso@mit.edu>

        * rw_bitmaps.c (read_bitmaps), block.c (block_iterate_ind,
                block_iterate_dind, block_iterate_tind), inode.c
                (ext2fs_read_inode): If EXT2_FLAG_IMAGE_FILE is set, so
                read the metadata from fs->image_io instead of fs->io.

        * initialize.c (ext2fs_initialize), openfs.c (ext2fs_open):
                Initialize fs->image_io to be the same as fs->io.
        
        * ext2_err.et.in (EXT2_ET_NOT_IMAGE_FILE): Add new error code. 

        * openfs.c (ext2fs_get_data_io, ext2fs_set_data_io,
                ext2fs_rewrite_to_io): New functions that allow
                applications to manipulate fs->image_io and fs->io safely.

        * freefs.c (ext2fs_free): If fs->image_io is different fs->io,
                then call io_channel_close on fs->image_io.

        * ext2fs.h: Add image_io element to the ext2_filsys data
                structure.  Add ext2fs_get_data_io() ext2fs_set_data_io(),
                and ext2fs_rewrite_to_io() prototypes.

2004-05-26  Theodore Ts'o  <tytso@mit.edu>

        * closefs.c (ext2fs_flush): Make sure the master superblock is
                written last, and only after other I/O has been flushed to
                disk.  Thanks to Junfeng Yang from the Stanford
                Metacompilation group for pointing a potential ordering
                constraint problem if we don't write things out in the
                right order.

        * test_io.c: Implement the ability to abort after n reads or
                writes to a particular block.  The block is specified by
                TEST_IO_BLOCK environment variable, and the read/write
                count by the TEST_IO_READ_ABORT and TEST_IO_WRITE_ABORT
                environment variables.  The block data is now only dumped
                if the 0x10 bit is set in TEST_IO_FLAGS.

2004-04-03  Theodore Ts'o  <tytso@mit.edu>

        * ext2_types.h.in: Remove check for _UUID_TYPES since uuid_types.h
                is no longer used.

2004-03-08  Theodore Ts'o  <tytso@mit.edu>

        * getsize.c (ext2fs_get_device_size): Only use the BLKGETSIZE64
                ioctl on Linux 2.6 since it is unreliable in Linux 2.4.
                (Addresses Debian Bug #236528).  Fix typo in the ioctl
                used for Mac OS X.

2004-03-02  Theodore Ts'o  <tytso@mit.edu>

        * getsize.c (ext2fs_get_device_size): Update getsize functions to
                use Apple Darwin and Linux 64-bit ioctl's

2004-02-29  Brian Bergstrand  <brian@bergstrand.org>

        * Makefile.in: Use $(BSDLIB_PIC_FLAG) to determine whether to use
                -fpic or -fPIC

2004-02-28  Theodore Ts'o  <tytso@mit.edu>

        * Release of E2fsprogs 1.35

2004-02-21  Theodore Ts'o  <tytso@mit.edu>

        * ext2fs.h (ext2fs_resize_mem): Fix C++ problem.  (Addresses Red
                Hat Bugzilla #112448; thanks Thomas Woerner from Red Hat.)

2004-02-14  Theodore Ts'o  <tytso@mit.edu>

        * namei.c (follow_link): Correctly deal with symlinks that have
                extended attribute information.  (Addresses Debian Bug
                #232328)

2004-01-30  Theodore Ts'o  <tytso@mit.edu>

        * ext2_fs.h: Reserve an extra 4 bytes for the journal backup,
                which we're using due to a typo in the e2fsck code.  (Oops)

        * swapfs.c (ext2fs_swap_inode): Fix byte swap bug which causes SE
                Linux created symlinks with mandatory attributes to fail
                to be properly handled on big endian systems.  (Addresses
                Debian Bug #228723).
                (ext2fs_swap_super): Byte swap some new fields in the
                superblock, including the journal backup fields.

2003-12-02  Theodore Ts'o  <tytso@mit.edu>

        * alloc.c, bb_inode.c, bitops.c, block.c, check_desc.c, closefs.c,
                dir_iterate.c, dirblock.c, expanddir.c, ext2fs.h,
                get_pathname.c, icount.c, imager.c, initalize.c, inode.c,
                lookup.c, openfs.c, read_bb.c, read_bb_file.c,
                rw_bitmaps.c, unix_io.c, unlink.c, write_bb_file.c: Fix
                gcc -Wall complaints.  Mainly marking variables as being
                unsued, and catching signed vs. unsigned comparisons.

2003-09-03  Theodore Ts'o  <tytso@mit.edu>

        * closefs.c (ext2fs_super_and_bgd_loc): New function which
                centralizes the calculation of the superblock and block
                group descriptors.
                (ext2fs_flush): Use ext2fs_super_and_bgd_lock to figure
                out where to write the superblock and block group
                descriptors.

        * alloc_sb.c (ext2fs_reserve_super_and_bgd): New function which
                reserves space in the block bitmap using
                ext2fs_super_and_bgd_loc.

        * initialize.c (ext2fs_initialize): Use
                ext2fs_reserve_super_and_bgd to initialize the block bitmap.

2003-08-20  Theodore Ts'o  <tytso@mit.edu>

        * inode_io.c (ext2fs_inode_io_intern2), ext2fs.h: Add new function
                allows the caller to pass in the inode data structure.

        * fileio.c (ext2fs_file_open2), ext2fs.h: Add new function which
                allows the caller to pass in the inode to be used in the
                file I/O.

        * ext2_fs.h: Add a backup of the location of the journal inode
                blocks to the superblock.

        * mkjournal.c (write_journal_inode): Save the location of the
                journal inode to the backup location in the superblock.

2003-08-01  Philipp Thomas <pthomas@suse.de>

        * alloc.c, badblocks.c, bb_inode.c, bitmaps.c, block.c, bmap.c,
                bmove.c, brel_ma.c, closefs.c, dblist.c, dblist_dir.c,
                dir_iterate.c, dirblock.c, dupfs.c, expanddir.c, ext2fs.h,
                ext_attr.c, fileio.c, freefs.c, get_pathname.c, icount.c,
                initialize.c, inode.c, inode_io.c, irel_ma.c, mkdir.c,
                mkjournal.c, namei.c, newdir.c, openfs.c, rs_bitmap.c,
                rw_bitmaps.c, test_io.c, unix_io.c: ext2fs_getmem(),
                ext2fs_free_mem(), and ext2fs_resize_mem() all now take a
                'void *' instead of a 'void **' in order to avoid pointer
                aliasing problems with GCC 3.x.

2003-07-25  Theodore Ts'o  <tytso@mit.edu>

        * Release of E2fsprogs 1.34

2003-07-06  Theodore Ts'o  <tytso@mit.edu>

        * kernel-jbd.h, flushb.c: Fix gcc -Wall nitpicks (indented cpp
                directives)

        * ext2_types.h.in, initialize.c: Fix gcc -Wall nitpicks 
                (don't use #elsif)

        * ismounted.c: Fix gcc -Wall nitpicks (Don't use exit as a goto label)

        * llseek.c: Fix gcc -Wall nitpicks (don't use #elsif)

        * lookup.c, read_bb.c: Fix gcc -Wall nitpicks (indent
                non-traditional #pragma)

        * test_io.c: Fix gcc -Wall nitpicks (const/unsigned type issues)

2003-06-24    <tytso@snap.thunk.org>

        * badblocks.c, ext2fs.h (ext2fs_u32_list_find,
                ext2fs_u32_list_test, ext2fs_u32_list_del,
                ext2fs_badblocks_list_del): Add functions to delete a
                block from the badblocks list.
        * tst_badblocks.c: Add test cases for ext2fs_badblocks_list_del().

2003-05-21  Theodore Ts'o  <tytso@mit.edu>

        * getsectsize.c (ext2fs_get_device_sectsize): New function which
                returns the hardware sector size (if it is available).

2003-05-13  Theodore Ts'o  <tytso@mit.edu>

        * unix_io.c: Add #ifdef NO_IO_CACHE which disables all userspace
                caching by the unix_io layer.  Not enabled, only for
                debugging. 

2003-05-05  Theodore Ts'o  <tytso@mit.edu>

        * test_io.c: Pay attention to the environment variables
                TEST_IO_LOGFILE, TEST_IO_FLAGS, and TEST_IO_BLOCK to
                determine whether or not we should log io activity, and to
                where.

2003-05-03  Theodore Ts'o  <tytso@mit.edu>

        * tst_badblocks.c (file_test): Use tmpfile() instead of mktemp().

2003-04-29  Theodore Ts'o  <tytso@mit.edu>

        * getsize.c (ext2fs_get_device_size): Allow windows code to get
                the resize for filesystems that are in regular files.

2003-04-21  Theodore Ts'o  <tytso@mit.edu>

        * Release of E2fsprogs 1.33

2003-04-21  Theodore Ts'o  <tytso@mit.edu>

        * Makefile.in: Use DYLD_LIBRAY_PATH so that "make check" works on
                Darwin systems when building with shared libraries.

2003-04-18  Theodore Ts'o  <tytso@mit.edu>

        * unix_io.c: Use __CYGWIN__ instead of CYGWIN.

2003-04-17  Theodore Ts'o  <tytso@mit.edu>

        * getsize.c: Add Cygwin/Windows version of ext2fs_get_device_size()

2003-04-12  Theodore Ts'o  <tytso@mit.edu>

        * unix_io.c (raw_read_blk): Add Cygwin support (the Windows block
                device only accepts sector aligned read requests.

        * ismounted.c (check_mntent_file): Deal with OS's that don't
                define MNTOPT_RO.

        * imager.c: If the OS doesn't define ssize_t, typedef it to int.

2003-04-11  Theodore Ts'o  <tytso@mit.edu>

        * ext2_fs.h (EXT2_FEATURE_RO_COMPAT_BTREE_DIR): Comment out unused
                feature flag

2003-03-30  Theodore Ts'o  <tytso@mit.edu>

        * Makefile.in: Use the compile_et --build-tree option.

2003-03-14  Theodore Ts'o  <tytso@mit.edu>

        * getsize.c: Add support for Apple Darwin's ioctl to get the hard
                disk size.

        * badblocks.c (ext2fs_u32_list_count), ext2fs.h: Add new function
                which returns the number of entries in the list.

2003-03-10  Theodore Ts'o  <tytso@mit.edu>

        * fileio.c (ext2fs_file_lseek): Fix bug added when adding 64-bit
                support; avoid null dereference when ret_pos is NULL.

2003-03-06  Theodore Tso  <tytso@mit.edu>

        * ext2_types.h.in: Don't redefine types if other e2fsprogs
                *_types.h files have been included already.

        * kernel-jbd.h: Use C99 variadic cpp macros if not using GCC.
                (Older GCC's don't support the C99 variadic macros.)

        * flushb.c (ext2fs_sync_device), 
        ismounted.c (ext2fs_check_mount_point): Avoid GCC extension: 
        #warning not supported by Solaris suncc

        * ext2_ext_attr.h: Avoid GCC extension: 0 length arrays in
                structure definition.  Not needed for now in 
                ext2_ext_attr_entry.

2003-01-25  Theodore Ts'o  <tytso@mit.edu>

        * dirhash.c: Fix gcc -Wall nits.

2003-01-22  Theodore Ts'o  <tytso@mit.edu>

        * unix_io.c (unix_write_blk): Fix up GCC -Wall nits.

2003-01-21  Theodore Ts'o  <tytso@mit.edu>

        * fileio.c (ext2fs_file_read, ext2_file_lseek,
                ext2_file_get_size): Add 64-bit support.

        * ext2fs.h (EXT2_I_SIZE): Add macro which caluates a 64bit size
                from i_size and i_size_high.

2003-01-19  Theodore Ts'o  <tytso@mit.edu>

        * initialize.c (ext2fs_initialize): If the user specifies a really
                large number of inodes, then reduce the number of blocks
                per group until we find a workable set of filesystem
                parameters.

        * ext2_err.et.in (EXT2_ET_TOO_MANY_INODES): Add new error code.

2002-11-09  Theodore Ts'o  <tytso@mit.edu>

        * Release of E2fsprogs 1.32

2002-11-09  Theodore Ts'o  <tytso@mit.edu>

        * unix_io.c (find_cached_block, reuse_cache, unix_read_blk, 
                unix_write_blk): Optimize routines so that we don't end up
                searching the cache twice when a block isn't in the
                cache.  If reads are larger than READ_DIRECT_SIZE, don't
                let them go through the cache.

        * unix_io.c (find_cached_block): Fixed bug which caused some clean
                blocks to be erroneously marked as dirty, so they would
                get written back to the disk before they are evicted from
                the cache.  Harmless, but it slows down e2fsck
                significantly.

2002-11-08  Theodore Ts'o  <tytso@mit.edu>

        * Release of E2fsprogs 1.31

2002-11-08    <tytso@snap.thunk.org>

        * Makefile.in (check): Skip trying to compile test_byteswap
                if --disable-byteswaap had been given to configure.

2002-11-07    <tytso@snap.thunk.org>

        * closefs.c (write_bgdesc, ext2fs_flush): Fix bug in meta_bg
                support when the MASTER_SB_ONLY flag is set.  Some of
                the descriptor blocks that should have been written out
                were getting skipped.

2002-10-31  Theodore Ts'o  <tytso@mit.edu>

        * Release of E2fsprogs 1.30

2002-10-31  Theodore Ts'o  <tytso@mit.edu>

        * ext2_fs.h: Add support for a new inode flag, which is to be used
                for indicating the top of directory hierarchies for the
                Orlov block allocator.
        
        * ismounted.c (check_mntent, check_mntent_file): Add better
                support for loopback-mounted filesystems.  Check /etc/mtab
                if /proc/mounts doesn't turn up any mount flags, since
                /etc/mtab has the loopback image filename, instead of
                /dev/loop0.  Also, check based on st_dev and st_ino, so
                that if a relative pathname or a pathnames using symbolic
                links are used, we can detect the the filesystem correctly
                in those cases.  (Addresses Sourceforge bug #619119)

        * flushb.c (ext2fs_sync_device): If the BLKFLSBUF ioctl succeeds,
                don't try the FDFLUSH ioctl that was required for floppies
                with older kernels.  This avoids needless whining from the
                MD device driver.  (Addresses Sourceforge bug #545832).

        * openfs.c (ext2fs_open): Fix bug which caused us to pass the
                wrong group_block to ext2fs_descriptor_block_loc if we're
                using the backup superblock/block group descriptors.
                (ext2fs_descriptor_block_loc): If we're using the backup
                superblock descriptors, use the backup descriptor block in
                the next block group.

2002-10-30  Theodore Ts'o  <tytso@mit.edu>

        * alloc_tables.c (ext2fs_allocate_group_table): Allocate the inode
                table so that it buts up against the bitmap blocks, to
                avoid block fragmentation.

        * closefs.c (write_bgdesc), initalize.c (ext2fs_initialize): Fix
                bug; only allocate group descriptor blocks up to
                s_first_meta_bg.

2002-10-25  Theodore Ts'o  <tytso@mit.edu>

        * ext2_fs.h: Add a new superblock field, s_mkfs_time, so that we
                know when a filesystem was created.  (Sometimes this can
                be useful...)

        * initialize.c (ext2fs_initialize): Set the s_mkfs_time field.

2002-10-20  Theodore Ts'o  <tytso@valinux.com>

        * ext2_fs.h (EXT3_DEFM_JMODE): Add new default mount options for
                the journal data mode.

        * closefs.c (ext2fs_flush, write_bgdesc), ext2_fs.h, ext2fs.h,
        openfs.c (ext2fs_descriptor_block_loc, ext2fs_open), initialize.c
        (ext2fs_initialize), swapfs.c (ext2fs_swap_super): Add support for
        the meta_blockgroup filesystem format.

2002-10-15    <tytso@snap.thunk.org>

        * ext2_fs.h: Add new field in superblock for default mount options.

2002-10-13  Theodore Ts'o  <tytso@mit.edu>

        * ext2fs.h: Add #include of header files necessary for ext2fs.h to
                compile cleanly.

2002-10-02  Theodore Y. Ts'o  <tytso@mit.edu>

        * rw_bitmaps.c (ext2fs_write_block_bitmap,
                ext2fs_read_block_bitmap): Don't set the CHANGED bit just
                because the bitmap is getting written to disk.  Make
                ext2fs_swap_bitmap be a static function, since it's not
                intended to be exported.

        * swapfs.c (ext2fs_swap_super): Byte-swap the hash seed

2001-09-24  Theodore Tso  <tytso@mit.edu>

        * Release of E2fsprogs 1.29

2001-08-31  Theodore Tso  <tytso@thunk.org>

        * Release of E2fsprogs 1.28

2002-08-31  Theodore Ts'o  <tytso@valinux.com>

        * dblist.c (ext2fs_dblist_sort): New function which allows the
                caller to pass in a special sort comparison function.

2002-08-20  Theodore Ts'o  <tytso@mit.edu>

        * valid_blk.c (ext2fs_inode_has_valid_blocks): Fix bug which
                failed to accurately characterize non-standard slow
                symlinks.  (Which don't appear in practice on real-life
                systems, fortunately.)

2002-08-17  Theodore Ts'o  <tytso@mit.edu>

        * Makefile.in: Remove inode_io.o from the standard object files,
                and only build it if debugfs is enabled (it requires
                fileio.o, which is only built if --disable-debugfs isn't
                specified to configure).

        * dirhash.c (ext2fs_dirhash): Change the MD4 hash in a backwards
                incompatible way so that it is no longer
                endian-dependent.  Add the TEA hash.  Allow the seed
                parameter to be optional.

        * ext2_fs.h: Remove the HALF_MD4_SEED and HALF_MD4_64 hashes.
                These features are all now in the HALF_MD4 hash.  Add
                definition for EXT2_HASH_TEA.

        * ext2fs.h (ext2fs_dirhash): Change function prototype so it takes
                a pointer instead of an array.

2002-08-16  Theodore Ts'o  <tytso@mit.edu>

        * ext2_err.et.in (EXT2_ET_BAD_EA_BLOCK_NUM): New error code

        * ext2fs.h (ext2fs_inode_data_blocks): New function which returns
                the number of data blocks used by an inode exclusive of
                the EA block.

        * ext_attr.c (ext2fs_adjust_ea_refcount): New function which
                adjusts the reference count in an extended attribute block.

        * valid_blk.c (ext2fs_inode_has_valid_blocks): Add code to
                correctly deal with extended attribute blocks in symbolic
                links. 

2002-08-13    <tytso@snap.thunk.org>

        * Makefile.in: Move dupfs.o and test_io.o from the
                needed-by-debugfs object list to the needed-by-resizer
                object list.  Fixes compile problem if the system is built
                with only --disable-debugfs.

2002-07-29  Theodore Ts'o  <tytso@mit.edu>

        * link.c (ext2fs_link): When adding a new link to a directory,
                clear the HTREE bit.

2002-07-23  Theodore Ts'o  <tytso@mit.edu>

        * dirhash.c (ext2fs_dirhash): Fix bug which caused MD4
                calculations for names > 32 characters to be completely
                bogus.  Changed MD4 calculation to match what is currently
                being used in the CVS gkernel tree.

2002-07-19  Theodore Ts'o  <tytso@mit.edu>

        * ext2_fs.h: Add s_hash_seed and s_def_hash_version to the
                superblock definition.

        * badblocks.c, freefs.c, ext2fs.h: Use the badblocks functions to
                create a set of u32_list functions.

        * dirhash.c (halfMD4Transform): Shift the hash by one bit,
                since that's required by the directory indexing code.

2002-07-14  Theodore Ts'o  <tytso@mit.edu>

        * ext2fs.h, read_bb_file.c: Change private to priv_data, to avoid
                using a C++ reserved word.

        * unix_io.c (unix_open): Only attempt the setrlimit workaround if
                the kernel version is 2.4.10 -- 2.4.17, since otherwise an
                old version of glibc (built against 2.2 headers) will
                interact badly with the workaround to actually cause more
                problems.  I hate it when the glibc folks think they're
                being smarter than the kernel....

2002-06-28  Andreas Dilger <adilger@clusterfs.com>

        * ext2_fs.h: Add superblock field for reserved group descriptors.

2002-06-28  Theodore Ts'o  <tytso@mit.edu>

        * bitops.h: Add #define's for ext2fs_{l,b}e{32,16}_to_cpu and
                ext2fs_cpu_to_{l,b}e{32,16}

2002-06-27  Theodore Ts'o  <tytso@mit.edu>

        * ismounted.c (check_mntent): In AIX 4.3, MOUNTED isn't defined.
                Add appropriate fallbacks in this case.

2002-06-26  Theodore Ts'o  <tytso@mit.edu>

        * dirhash.c (ext2fs_dirhash): Change function signature to support
                a hash seed, and to return the minor hash (for 64-bit hash
                support).   Add support for the half MD4, half MD4 with
                seed, and half MD4 with seed and 64 bits.

2002-06-15  Theodore Ts'o  <tytso@mit.edu>

        * ext2_fs.h (EXT2_DIRSYNC_FL): Add new file.

2002-06-09  Andreas Dilger <adilger@clusterfs.com>

        * ext2_fs.h: Add macros for maximum block/inode counts:
                EXT2_INODES_PER_BLOCK, EXT2_MAX_BLOCKS_PER_GROUP,
                and EXT2_MAX_INODES_PER_GROUP.

        * openfs.c (ext2fs_open): Check that the number of blocks in a group
                is less than 2^16, otherwise we need an INCOMPAT flag (not
                in existence yet, if ever) to open such a filesystem.

        * initialize.c (ext2fs_initialize): Limit the number of blocks and
                inodes in a group to less than 2^16.

2002-06-09  Andreas Dilger <adilger@clusterfs.com>

        * ext2_fs.h: Further minor cleanups of the header.  Consolidate
                some checks for __KERNEL__ into one place.

2002-05-22  Andreas Dilger <adilger@clusterfs.com>

        * ext2_fs.h: Remove macros accessing u.ext2_sb field and use
                the EXT2_SB() macro instead.  Remove kernel function
                prototypes also.  This matches the 2.5 kernel, and
                is also cleaner for other reasons.  Whitespace cleanup.

2002-05-21  Theodore Ts'o  <tytso@mit.edu>

        * ext2_ext_attr.h: Update to V2 version of the Bestbits format.

2002-05-16  Andreas Dilger <adilger@clusterfs.com>

        * ext2_fs.h: Change limits to support filesystems with 8k blocks.

        * initialize.c (ext2fs_initialize): Remove assumption that
                blocksizes are always <= 4k.

2002-05-11  Theodore Ts'o  <tytso@mit.edu>

        * bmap.c (ext2fs_bmap): Fix bug which caused ext2fs_bmap to fail
                silently if inode pointer is NULL (and ext2fs_bmap is
                expected to read the inode itself).

2002-04-27  Theodore Ts'o  <tytso@mit.edu>

        * ismounted.c (check_mntent_file, is_swap_device): Verify that the
                file we are checking is a block device file before looking
                at st_rdev, since it's not valid for normal files.
                (is_swap_device): Move so that it is outside the
                HAVE_MNTENT_H, so that it is always built.

2002-03-11  Theodore Tso  <tytso@mit.edu>

        * dirblock.c (ext2fs_read_dir_block2, ext2fs_write_dir_block): New
                functions which take an extra flags argument.  The flag
                EXT2_DIRBLOCK_V2_STRUCT will reverse when the name_len
                field is byte swampped on big-endian machines, since in
                the V2 structure, name_len is a char field which is
                doesn't need to be byte swapped --- except if an
                old-style kernel had byte-swapped the name_len field
                as part of the V1 structure.

        * ext2_err.et.in (EXT2_ET_DIRHASH_UNSUPP): New error code

        * dirhash.c (ext2fs_dirhash): New function which calculates the
                hash for a filename in an indexed directory.

2002-03-08  Theodore Tso  <tytso@mit.edu>

        * Release of E2fsprogs 1.27

2002-03-07  Theodore Tso  <tytso@mit.edu>

        * ext2fs.h (ext2fs_inode_io_intern): Add missing function prototype.

        * bmap.c, fileio.c, inode_io.c, tst_badblocks.c, 
                tst_byteswap.c: Fix gcc -Wall complaints

        * Makefile.in (check): Use LD_LIBRARY_PATH to run test programs.
                (From Philipp Thomas <pthomas@suse.de>)

2002-02-25  Theodore Tso  <tytso@mit.edu>

        * ext2_fs.h: Add structure definitions for the directory indexing
                extension.

2002-02-23  Theodore Tso  <tytso@mit.edu>

        * unix_io.c (unix_open): Fix 2.4 resource limit workaround so that
                it doesn't break things on mis32, sparc32, and alpha
                platforms.

2002-02-21  Theodore Tso  <tytso@mit.edu>

        * ismounted.c (is_swap_device): Fix file descriptor/memory leak;
                we were missing an fclose().

2002-02-20  Theodore Tso  <tytso@mit.edu>

        * Makefile.in, inode_io.c, ext2fs.h, ext2_err.et.in: Add new io
                abstraction interface which exports an ext2 inode.

        * ext2fs.h, fileio.c (ext2fs_file_flush): Export ext2fs_file_flush
                as a public interface.  Change void * to const void * in
                ext2fs_file_write's interface.

        * test_io.c (test_close), unix_io.c (unix_close): Remove unneeded
                conditional; save a few bytes.
        
2002-02-12  Theodore Tso  <tytso@mit.edu>

        * Makefile.in (tst_badblocks): Add some extra .o files when
                linking the debugging program tst_badblocks which are
                needed if we aren't compiling with inline functions enable.

        * kernel-list.h (__inline__): On non-gcc and non-Watcom compilers,
                define away __inline__ since it may not be supported.

        * kernel-jbd.h (jbd_debug): For systems that don't do STDC, use a
                stripped down jbd_debug that doesn't use variadic
                arguments.  This will cause warnings under AIX, but things
                should still build.

2002-02-03  Theodore Tso  <tytso@thunk.org>

        * Release of E2fsprogs 1.26

2002-02-03  Theodore Tso  <tytso@mit.edu>

        * mkdir.c (ext2fs_mkdir): Change to use ext2fs_inode_alloc_stats2
                so that the number of directories in use is adjusted
                appropriately.

        * alloc_stats.c (ext2fs_inode_alloc_stats2): Add new function
                which optionally will modify the number of directories
                count.

2002-01-03  Theodore Tso  <tytso@mit.edu>

        * dir_iterate.c (ext2fs_dir_iterate2, ext2fs_process_dir_block):
                Add support for a new flag, DIRENT_FLAG_INCLUDE_REMOVED,
                which will return deleted directory entries.
                ext2fs_dir_iterate2 takes a new callback function which
                is identical with the one used by
                ext2fs_dblist_dir_iterate().  If the directory entry is
                deleted, the callback function will be called with the
                entry paraemter set to DIRENT_DELETED_FILE.

        * Makefile.in, alloc_stats.c (ext2fs_inode_alloc_stats,
                ext2fs_block_alloc_stats): New functions which update
                block/inode allocation statistics in the bitmaps, block
                group descriptors, and superblock.

        * mkjournal.c (mkjournal_proc), mkdir.c (ext2fs_mkdir),
                expanddir.c (expand_dir_proc), bb_inode.c
                (clear_bad_block_proc, set_bad_block_proc,
                ext2fs_update_bb_inode), alloc.c (ext2fs_alloc_block):
                Update to use new block/inode allocation statistics.

2001-12-24  Theodore Tso  <tytso@mit.edu>

        * ismounted.c (is_swap_device): New function used by
                ext2fs_check_if_mounted and ext2fs_check_mount_point which
                determines whether or not the specified device is a swap
                device by using /proc/swaps.  More bulletproofing for
                idiotic/careless system administrators!

        * ext2fs.h, openfs.c (ext2fs_open), initialize.c
                (ext2fs_initialize), mkdir.c (ext2fs_mkdir): Add a new
                field to struct_ext2_filsys, umask.  This field is
                initialize to 022, and affects ext2fs_mkdir in the obvious
                way.  (In the future umask should also affect new file
                creation routines, but the fileio functions don't
                currently support this yes.)

        * ismounted.c (check_mntent_file): Stat all of the entries in
                /etc/mtab and/or /proc/mounts in order to catch dim-witted
                system administrators who might have created alias
                devices.
 
2001-12-23  Theodore Tso  <tytso@mit.edu>

        * Makefile.in, jfs_user.h: Move linux/jbd.h to
                ext2fs/kernel-jbd.h, to avoid using the system header
                file version of hbd.h when using diet glibc (since it
                forcibly adds /usr/include to the beginning of the
                include search path.)

        * kernel-jbd.h, kernel-list.h, jfs_compat.h: Move files from
                include/linux directory.

2001-12-16  Theodore Tso  <tytso@mit.edu>

        * bitops.h (ext2fs_mark_generic_bitmap, ext2fs_unmark_generic_bitmap),
                ext_attr.c (ext2fs_read_ext_attr, ext2fs_write_ext_attr),
                fileio.c (ext2fs_file_write): Fix gcc -Wall nits

        * Makefile.in, jfs_user.h: linux/jfs.h has been renamed to
                linux/jbd.h

2001-12-03  Theodore Tso  <tytso@mit.edu>

        * unix_io.c (unix_open): Make sure the ulimit workaround works
                regardless of the version of glibc which is used to
                compild e2fsprogs.

2001-11-26  Theodore Tso  <tytso@mit.edu>

        * unix_io.c (unix_open): Work around a bug in 2.4.10+ kernels by
                trying to unset the filesize limit if at all possible,
                if a block device is getting opened.  (The filesize limit
                shouldn't be applied against writes to a block device, but
                starting in 2.4.10, the kernel is doing this.)
        
2001-11-05  Theodore Tso  <tytso@mit.edu>

        * mkjournal.c (ext2fs_add_journal_inode): When creating a .journal
                file on adding a journal to an already-mounted filesystem,
                try to clear the ext2 file attributes on an already
                existing .journal file so that we don't fail if on a
                partially added journal to the filesystem.

        * ext2_fs.h: Define a new ext2 file attribute, EXT2_NOTAIL_FL,
                which signals that a particular inode should not have the
                last bits of data (the "tail") be merged with another
                file.  This is necessary to keep LILO happy.

2001-09-20  Theodore Tso  <tytso@thunk.org>

        * Release of E2fsprogs 1.25

2001-09-16  Theodore Tso  <tytso@mit.edu>

        * ext2_ext_attr.h: Remove unneeded #include of <linux/config.h>
                which was breaking the build on the Hurd.  (Addresses
                Debian bug #112414).

2001-09-13  Theodore Ts'o  <tytso@mit.edu>

        * ismounted.c (check_mntent_file): We now validate the entry in
                /etc/mtab to make sure the filesystem is really mounted,
                since some broken distributions (read: Slackware) have
                buggy boot scripts that don't initialize /etc/mtab before
                checking non-root filesystems.  (Slackware also doesn't
                check the root filesystem separately, and reboot if the
                root filesystem had changes applied to it, which is
                dangerous and broken.)   

2001-09-02  Theodore Tso  <tytso@thunk.org>

        * Release of E2fsprogs 1.24a

2001-08-30  Theodore Tso  <tytso@thunk.org>

        * Release of E2fsprogs 1.24

2001-08-30  Theodore Tso  <tytso@valinux.com>

        * getsize.c (ext2fs_get_device_size): Back out BLKGETSIZE64
                changes, since the ioctl number has been reused by another
                unofficial patch.

2001-08-15  Theodore Tso  <tytso@valinux.com>

        * Release of E2fsprogs 1.23

2001-08-05  Theodore Tso  <tytso@valinux.com>

        * alloc.c (ext2fs_new_inode, ext2fs_new_block): Use the fast
                version of the bitmap test routines to speed up these
                routines.  (At some point I may want to make these
                routines use the find_first_bit functions, but that will
                add a lot of complexity since it means that these
                functions will have to break the bitmap abstraction
                boundary.  It's not clear it's worth it.)

        * mkjournal.c (mkjournal_proc): Remember the last block allocated
                to speed up ext2fs_new_block().

2001-07-29  Theodore Tso  <tytso@valinux.com>

        * finddev.c (scan_dir): Fix memory leak; we weren't calling
                closedir() when exiting the function in all cases.

2001-07-27  Theodore Tso  <tytso@valinux.com>

        * mkjournal.c (ext2fs_create_journal_superblock): Set the first
                block usable in the journal for external journals to be 2
                or 3, depending on the blocksize, so that the existing
                kernel code does the right thing.

        * getsize.c (ext2fs_get_device_size): Add support for the
                BLKGETSIZE64 ioctl.  (Ioctl defined by unofficial patches
                from Ben LaHaise, but it's likely this interface won't
                change.)

        * mkjournal.c (ext2fs_add_journal_device): Use the correct block
                when writing the journal superblock, too.  (Oops! Needed
                to make 1k filesystems with external journal to work.)

2001-07-26  Theodore Tso  <tytso@valinux.com>

        * mkjournal.c (ext2fs_add_journal_device): Use the correct block
                to find the journal superblock if the blocksize is 1024.

2001-07-21  Theodore Tso  <tytso@valinux.com>

        * ext2_err.et.in (EXT2_ET_LOAD_EXT_JOURNAL): Add new error code

2001-07-20  Theodore Tso  <tytso@valinux.com>

        * ext_attr.c (ext2fs_write_ext_attr): When writing the extended
                attribute block, set the filesystem changed bit.

        * bitops.h (ext2fs_find_first_bit_set, ext2fs_find_next_bit_set):
                Comment out these functions since we're not using them.

2001-07-10  Theodore Tso  <tytso@valinux.com>

        * closefs.c (write_primary_superblock): After writing changes to
                the primary superblock, update the original superblock
                copy so we don't have to re-write those changes in the
                future.
                (ext2fs_flush): Clear the superblock dirty flag after
                we've flushed out changes to disk.

2001-07-07  Theodore Tso  <tytso@valinux.com>

        * bitops.h (ext2fs_find_first_bit_set): Use %esi instead of %ebx
                to avoid register conflicts when compiling in PIC mode.

2001-07-04  Theodore Tso  <tytso@valinux.com>

        * bitops.h (ext2fs_find_first_bit_set, ext2fs_find_next_bit_set):
                Add new functions (C and in i386 assembler) which quickly
                find bits set in a bitmask.

2001-06-23  Theodore Tso  <tytso@valinux.com>

        * Makefile.in, ext_attr.c, ext2_attr.c, ext2fs.h: Add new files
                ext2_ext_attr.h and ext_attr.c for extended attributes
                support.

        * Release of E2fsprogs 1.22

2001-06-22  Theodore Tso  <tytso@valinux.com>

        * mkjournal.c (ext2fs_add_journal_inode): Move close of file
                descriptor so that adding a journal to a mounted
                filesystem doesn't die.  (Fixes a bug accidentally
                introduced in e2fsprogs 1.21.)

        * mkjournal.c (ext2fs_add_journal_inode): Only use fchflags if
                HAVE_CHFLAGS and UF_NODUMP are defined, since the Hurd has
                fchflags without defining UF_NODUMP.  (Addresses Debian
                bug #101361)

        * flushb.c: Use platform independent method of defining the
                BLKFLSBUF and FDFLUSH ioctl's.  Also include sys/mount.h
                since on newer glibc's BLKFLSBUF is defined there.

        * bitops.h: The C language versions of ext2fs_swab16/32 need to be
                included if EXT2FS_ENABLE_SWAPFS is defined, since we need
                to support byte swapping even if we don't support the
                conversion functions.  (Fixes Debian bug #101686).

        * dirblock.c (ext2fs_read_dir_block): Remove use of dir_entry_2
                since the byte-swapping code all assumes the
                ext2_dir_entry structure.  (It's a question of whether or
                not name_len should be byte-swapped or not, and whether
                it's a 16 bit or 8 bit field.)

2001-06-15  Theodore Tso  <tytso@valinux.com>

        * Release of E2fsprogs 1.21

2001-06-15  Theodore Tso  <tytso@valinux.com>

        * Makefile.in: Fix bug in installation of ext2_types.h.  It is a
                file which is generated and is therefore found in the
                build directory, not source directory.

        * ismounted.c (check_mntent_file): Use a test file in / to check
                to see if the root filesystem is mounted read-only.  This
                protects against the case where /etc might not be on /, as
                well as the case where /etc/mtab doesn't exist.  (Both are
                should-never happen scenarios, but you never know...)

2001-06-14  Theodore Tso  <tytso@valinux.com>

        * ismounted.c (ext2fs_check_if_mounted): Fix grammer in comment.
                Remove unneeded #pragma argsused, since the arguments are
                always used.

2001-06-13  Theodore Tso  <tytso@valinux.com>

        * ext2_types.h.in: If linux/types.h has been defined, then don't
                try to redefine the typedefs.

        * Makefile.in (HFILES): Add ext2_types.h to the list of files
                which should be installed.

        * ismounted.c (check_mntent_file): Work around GNU hurd brain
                damage.  Addresses Debian bug #100304.

        * Makefile.in: Limit some .o files from being included into the
                library if --disable-debugfs, --disable-swapfs,
                --disable-imager, or --disable-resizer are used.

2001-06-12  Theodore Tso  <tytso@valinux.com>

        * inode.c, tst_iscan.c: Stop using the compatibility badblocks
                function, and use the ext2fs_badblocks_* functions
                instead.

2001-06-11  Theodore Tso  <tytso@valinux.com>

        * Makefile.in, gen_bitmap.c, bitops.h: Move inline functions
                ext2fs_mark_generic_bitmap and
                ext2fs_unmark_generic_bitmap to gen_bitmap.c as normal
                functions.  (This saves space and doesn't significantly
                change the speed of e2fsck on a P-III.)

        * ext2fs.h, bitops.h, block.c, bmap.c, closefs.c, dirblock.c,
                inode.c, native.c, openfs.c, rw_bitmaps.c, swapfs.c: Only
                include the byte-swapping logic if ENABLE_SWAPFS is turned
                on or if we're on a big-endian machine.
        
        * initialize.c (ext2fs_initialize):Use WORDS_BIGENDIAN directly to
                set EXT2_FLAG_SWAP_BYTES, instead of using
                ext2fs_native_flag.
        
        * native.c (ext2fs_native_flag): Use WORDS_BIGENDIAN provided by
                autoconf to determine whether or not return
                EXT2_FLAG_SWAP_BYTES.

2001-06-10  Theodore Tso  <tytso@valinux.com>

        * Makefile.in: Remove the dependence on the libe2p library.

        * mkjournal.c (ext2fs_add_journal_inode): Replace use of fsetflags
                with direct usage of the ioctl/fchflags so that we don't
                have to depend on the libe2p library.

2001-06-08  Theodore Tso  <tytso@valinux.com>

        * ext2_types.h.in: Use unsigned ints in favor of unsigned longs
                when trying to find a 32-bit wide type.

        * icount.c (insert_icount_el): Fix the code used to estimate the
                size of the new icount array to be more intelligent, to
                avoid reallocating the array too many times.  Thanks to
                Enrique Perez-Terron for pointing this out.

2001-06-02  Theodore Tso  <tytso@valinux.com>

        * valid_blk.c (ext2fs_inode_has_valid_blocks): Only check i_blocks
                for a symlink to determine whether it is a fast symlink.

2001-06-01  Theodore Tso  <tytso@valinux.com>

        * Makefile.in, dosio.c, ext2_fs.h, ext2_types.h.in, ext2fs.h:
                Move include/asm/types.h.in to lib/ext2fs/ext2_types.h.in.

2001-05-25  Theodore Tso  <tytso@valinux.com>

        * Release of E2fsprogs 1.20

2001-05-25  Theodore Tso  <tytso@valinux.com>

        * ismounted.c: More cleanups for ismounted.c, some from Andreas,
                some to clean up Andreas's patches.  Use strncpy instead
                of strcpy to save the root's mountpoint.  Clean up #ifdef
                structure.  Remove uneeded variable in testing/debug driver.

2001-05-24  Andreas Dilger  <adilger@turbolinux.com>

        * ismounted.c: Add check for root device which doesn't depend on
                /etc/fstab or /proc/mounts to be correct.  Don't call
                endmntent() before we are done with mnt struct.

2001-05-23  Theodore Tso  <tytso@valinux.com>

        * ext2_err.et.in (EXT2_ET_JOURNAL_UNSUPP_VERSION): Added new error
                code.

2001-05-21  Theodore Tso  <tytso@valinux.com>

        * ext2_fs.h: Change assignment of EXT2_FEATURE_COMPAT_DIR_INDEX to
                make room for pre-existing usage of
                EXT2_FEATURE_COMPAT_EXT_ATTR.  Add flag EXT2_INDEX_FL with
                the same codepoint as EXT2_BTREE_FL.

2001-05-20  Theodore Tso  <tytso@valinux.com>

        * ext2fs.h: #include <> instead of "" for ext2fs and et header
                files, since they will be installed in /usr/include

2001-05-14  Theodore Tso  <tytso@valinux.com>

        * alloc.c, alloc_tables.c, badblocks.c, bb_compat.c, bb_inode.c,
                bitmaps.c, bitops.c, block.c, bmap.c, bmove.c, brel_ma.c,
                check_desc.c, closefs.c, cmp_bitmaps.c, dblist.c,
                dblist_dir.c, dir_iterate.c, dirblock.c, dupfs.c,
                expanddir.c, ext2_fs.h, fileio.c, finddev.c, flushb.c,
                freefs.c, get_pathname.c, getsize.c, icount.c, imager.c,
                initialize.c, inline.c, inode.c, irel_ma.c, ismounted.c,
                link.c, lookup.c, mkdir.c, mkjournal.c, namei.c, native.c,
                newdir.c, nt_io.c, openfs.c, read_bb.c, read_bb_file.c,
                rs_bitmap.c, rw_bitmaps.c, swapfs.c, test_io.c,
                tst_badblocks.c, tst_byteswap.c, tst_getsize.c,
                tst_iscan.c, unix_io.c, unlink.c, valid_blk.c, version.c,
                write_bb_file.c, ext2_fs.h: Moved file from include/linux.
                Adjust all files in this directroy to include this file.

        * mkjournal.c (ext2fs_create_journal_superblock): Remove redundant
                code.

2001-05-05  Theodore Tso  <tytso@valinux.com>

        * fileio.c (ext2fs_file_read): Factored out common code and
                cleaned up function.  Fixed a bug where if there was an
                error reading from the disk, the number of bytes read
                wasn't reliably set.  (Fixes Debian bug #79163)
                (ext2fs_file_write): Factored out common code and made
                function more efficient; if writing a full block, don't
                bother to do a read-modify-write cycle.

2001-05-04  Theodore Tso  <tytso@valinux.com>

        * dirblock.c (ext2fs_read_dir_block): Check for an directory
                record length which isn't a multiple four, and treat that
                as an invalid.  Scan the directory and return an error
                (EXT2_ET_DIR_CORRUPTED) if the directory records are
                corrupted.
                (ext2fs_write_dir_block): If while byte-swapping the
                directory block, if there's an error, abort and return
                EXT2_ET_DIR_CORRUPTED.

2001-05-02  Theodore Tso  <tytso@valinux.com>

        * ext2fs.h (EXT2_FLAG_IMAGE_FILE): Add new flag, and add
                image_header field in the ext2_filsys structure

        * block.c (block_iterate_ind, block_iterate_dind, block_iterate_tind): 
        * inode.c (ext2fs_read_inode): 
        * rw_bitmaps.c (read_bitmaps): 
        * openfs.c (ext2fs_open): Add support for EXT2_FLAG_IMAGE_FILE

        * imager.c (ext2fs_image_bitmap_read): Fix bug in imager to make
                sure the full bitmap is saved.

2001-05-01  Theodore Tso  <tytso@valinux.com>

        * e2image.h (struct ext2_image_hdr): Add space for the device name
                in the image header.

        * dir_iterate.c (ext2fs_process_dir_block): Add a double-check to
                make sure the rec_len is a multiple of 4, to prevent
                bus-errors on architectures which care about mis-aligned
                pointer references.

2001-04-25  Theodore Tso  <tytso@valinux.com>

        * getsize.c (ext2fs_get_device_size): Use an unsigned long to
                query the device sizes using the BLKGETSIZE ioctl.

2001-04-16  Theodore Tso  <tytso@valinux.com>

        * ismounted.c (check_mntent): Check /proc/mounts on Linux systems
                before checking /etc/mtab.  The EXT2_MF_READONLY flag is
                now set from the /etc/mtab options field for all
                filesystems, not just the root filesystem.  Add debugging
                code to make it easier to test ext2fs_check_if_mounted().

        * mkjournal.c (ext2fs_create_journal_superblock): Add safety
                check; return an error if there's an attempt to create a
                journal less than 1024 filesystem blocks.

        * ext2_err.et.in, mkjournal.c: Change EXT2_JOURNAL_NOT_BLOCK and
                EXT2_NO_JOURNAL_SB to be EXT2_ET_*.

2001-02-20  Theodore Tso  <tytso@valinux.com>

        * bitops.h (ext2fs_swab16, ext2fs_swab32): Add i386 assembly
                inline functions.

        * tst_byteswap.c: New function to test the byteswap functions.
                Add to regression test suite.

2001-02-08  Theodore Tso  <tytso@valinux.com>

        * e2image.h (struct ext2_image_hdr): Fix type for fs_hostname

2001-02-07  Theodore Tso  <tytso@valinux.com>

        * mkjournal.c (ext2fs_create_journal_superblock): Fix the setting
                of s_first for external devices to always be 1, since
                jsb->s_first is always relative to the start of the
                journal superblock.  Use htonl(1) when setting s_nr_users.

2001-01-17  Theodore Ts'o  <tytso@valinux.com>

        * mkjournal.c (ext2fs_add_journal_device): Fix bug where the
                device number of the filesystem (instead of the journal)
                was being dropped into s_journal_dev.

2001-01-15  Theodore Ts'o  <tytso@valinux.com>

        * initialize.c (ext2fs_initialize): Add support for initializing
                the ext2 superblock for external journal devices.  This
                basically means we don't bother to allocate any block
                group descriptors.

        * openfs.c (ext2fs_open): Only open external journal devices if
                the new flag EXT2_FLAG_JOURNAL_DEV_OK is passed to
                ext2fs_open.  When opening such devices, don't try to read
                the block group descriptors, since they're not there.

        * ext2_err.et.in (EXT2_NO_JOURNAL_SB): Add new error code 
        
        * mkjournal.c: Export a new function,
                ext2fs_create_journal_superblock(), which allocates and
                returns a buffer containing a journal superblock.  This is
                needed by mke2fs to create an external journal.  Rewrote
                ext2fs_add_journal_device() so that it no longer creates
                the external journal, but rather adds a filesystem to an
                existing external journal.  It handles all of the UUID
                manipulation.

        * ext2fs.h: List the EXT3_FEATURE_JOURNAL_DEV as a flag supported
                by the library.  Define the EXT2_FLAG_JOURNAL_DEV_OK.
                Changed function prototype for ext2fs_add_journal_device().
                
2001-01-14  Theodore Ts'o  <tytso@valinux.com>

        * closefs.c (ext2fs_flush): Don't write out anything beyond the
                 primary superblock if EXT2_INCOMPAT_JOURNAL_DEV is
                 listed.

2001-01-12  Theodore Ts'o  <tytso@valinux.com>

        * imager.c: Fix gcc -Wall complaints and a series of bugs where
                retval wasn't set correctly.  (Thanks to Andreas Dilger
                for pointing this out.)

2001-01-11    <tytso@snap.thunk.org>

        * flushb.c (ext2fs_sync_device): New function which centralizes
                all of the places which might try to use the BLKFLSBUF
                or FDFLUSH ioctls (and usually failing to define them
                since the system header files don't usually do this for
                us, and we're trying to avoid usage of kernel include
                files now).

2001-01-10    <tytso@snap.thunk.org>

        * alloc.c, bb_inode.c, bitmaps.c, bitops.h, block.c, bmap.c, 
                bmove.c, brel.h, cmp_bitmaps.c, dblist.c, dblist_dir.c, 
                dir_iterate.c, expanddir.c, ext2fs.h, ext2fsP.h, fileio.c,
                finddev.c, get_pathname.c, icount.c, inode.c, irel.h, 
                irel_ma.c, ismounted.c, link.c, lookup.c, mkdir.c, 
                mkjournal.c, namei.c, newdir.c, read_bb_file.c, test_io.c,
                tst_iscan.c, unix_io.c, unlink.c: Change use of ino_t to
                ext2_ino_t, to protect applications that attempt to
                compile -D_FILE_OFFSET_BITS=64, since this inexplicably
                changes ino_t(!?).  So we use ext2_ino_t  to avoid an
                unexpected ABI change.

2001-01-05    <tytso@snap.thunk.org>

        * dirblock.c (ext2fs_read_dir_block): Fix a potential case where
                we may overrun allocated memory in case of a corrupted
                filesystem (or an e2fsck test case :-) when byte-swapping
                the directory block.

        * ext2fs.h: Indent the #warning to fix gcc -Wall complaint.

        * mkjournal.c (ext2fs_add_journal_device): Fix various gcc -Wall
                complaints including a missing return 0 at the end of
                ext2fs_add_journal_device.

2001-01-03    <tytso@snap.thunk.org>

        * Makefile.in: Link in libe2p when creating libext2fs as a shared
                library, since mkjournal.c now references fsetflags().

        * mkjournal.c (ext2fs_add_journal_inode): Folded in Andreas
                Dilger's changes (with fixups) to allow on-line creation
                of a journal file.

        * ext2fs.h, closefs.c (ext2fs_flush): Add new flag,
                EXT2_FLAG_SUPER_ONLY, which the close routines to only
                update the superblock, and not the group descriptors.

2000-12-30  Andreas Dilger  <adilger@turbolinux.com>

        * ismounted.c: add ext2fs_check_mount_point() function, which will
                optionally return the mount point of a device if mounted

2000-12-14  Andreas Dilger  <adilger@turbolinux.com>

        * mkjournal.c: rename ext2fs_add_journal_fs() to the more descriptive
                ext2fs_add_journal_inode()

2001-01-01    <tytso@snap.thunk.org>

        * ext2fs.h: Remove definition of ext2fs_sb.  Note: this may break
                source (but not binary) compatibility of some users of the
                ext2 library.  They should just simply do a global search
                and replace of struct ext2fs_sb with struct
                ext2_super_block, and use their own private copy of
                ext2_fs.h if they aren't already.

        * closefs.c, initialize.c, link.c, newdir.c, openfs.c, swapfs.c:
                Replace use of ext2fs_sb with ext2_super_block.

2000-12-31    <tytso@snap.thunk.org>

        * ext2fs.h: Cleaned up header file by removing definitions of
                feature flags that might not have been defined in older
                ext2 header files.  Now that we're using our own
                include/linux/ext2fs.h header file, this can never happen.

        * jfs_dat.h: Removed old header file which is no longer needed.

2000-12-13  Theodore Ts'o  <tytso@valinux.com>

        * closefs.c (ext2fs_update_dynamic_rev): New function suggested
                by Andreas Dilger to update the filesystem revision to
                EXT2_DYNAMIC_REV.

        * swapfs.c (ext2fs_swap_super): Add byte swapping for the journal
                fields.

2000-12-09    <tytso@snap.thunk.org>

        * ext2fs.h, mkjournal.c (ext2fs_add_journal_inode,
                ext2fs_add_journal_device): Add a new argument to the APIs
                of these function, which is a flags word.  This is used to
                allow the creation of a V1 superblock for those folks who
                are using ext3 0.3b in production.  Note, the user-land
                interface for getting at this flag won't be documented, as
                the V1 superblock is deprecated.

        * mkjournal.c (init_journal_superblock): Sync Stephen's changes
                which creates a V2 superblock instead of a V1 superblock.

2000-11-21    <tytso@snap.thunk.org>

        * test_io.c (test_write_blk, test_write_byte): Fix typos pointed
                out by Andreas Dilger.

2000-11-05    <tytso@snap.thunk.org>

        * imager.c (ext2fs_image_{inode,super,bitmap}_{read,write},
                ext2_fs.h, Makefile.in: New file that has routines that
                save ext2fs metadata to a file.

        * ext2_err.et.in (EXT2_ET_MAGIC_E2IMAGE): New error code assigned.

        * e2image.h: New file which defines the file format for the ext2
                image file.  (Saved copy of ext2 metadata to a file as a
                saving throw against worst-case damage.)

2000-11-01    <tytso@snap.thunk.org>

        * inode.c (ext2fs_flush_icache): Add new function
                ext2fs_flush_icache() which flushes the internal inode
                cache.  Applications which modify the inode table blocks
                directly must call this function.

2000-10-26    <tytso@snap.thunk.org>

        * mkjournal.c: Add #include of netinet/in.h, since Solaris
                requires it for ntohl().

        * ext2_io.h (io_channel_write_byte): Add new interface to allow
                callers to write specific byte ranges.  This is an
                optional interface, which not all IO channels may
                implement.

        * unix_io.c (unix_write_byte):
        * test_io.c (test_write_byte): Add implementation of the
                write_byte function.

        * closefs.c (write_primary_superblock, ext2fs_flush): Add a new
                function which writes the primary superblock.  If the IO
                channel supports writing raw bytes directly, only fields
                which were modified are written to the disk.  This makes
                it safe(r) to use utilities like tune2fs on a mounted
                filesystem. 

        * freefs.c (ext2fs_free): Free the original superblock if it is
                available. 

        * openfs.c (ext2fs_open): Store a copy of the original superblock
                when opening it.

        * ext2fs.h: Add a field to store the original superblock in the
                ext2 context structure.

2000-10-24    <tytso@snap.thunk.org>

        * llseek.c: Add #ifdef's for IA64 (it's a 64-bit platform, so we
                don't need to use llseek).

2000-10-24    <tytso@valinux.com>

        * Makefile.in, ext2fs.h, jfs_dat.h, mkjournal.c: Add functions for
                creating an ext3 journal on a filesystem.

2000-08-21    <tytso@valinux.com>

        * ext2_err.et.in (EXT2_JOURNAL_NOT_BLOCK): Add new error code.

2000-08-22    <tytso@valinux.com>

        * unix_io.c: Make massive changes to support a multiple block
                writethrough cacheing.

        * ext2_io.h: Added flags field to the io_channel structure.

2000-08-19    <tytso@valinux.com>

        * finddev.c, ext2fs.h, Makefile.in: Add new file, finddev.c, which
                provides the function ext2fs_find_block_device().  This
                function returns the pathname to a block device, given its
                device number.

2000-07-13    <tytso@valinux.com>

        * Release of E2fsprogs 1.19

2000-07-07  Theodore Ts'o  <tytso@valinux.com>

        * ext2fs.h (EXT2_LIB_FEATURE_INCOMPAT_SUPP): Add
                EXT3_FEATURE_INCOMPAT_RECOVER (aka needs_recovery) to the
                list of filesystem flags supported by the library.

2000-07-04  Theodore Ts'o  <tytso@valinux.com>

        * ext2fs.h: Update to include latest journalling additions to the
                superblock.

        * dll/jump.funcs: Add new jumptable entries for
                ext2fs_write_bb_FILE, ext2fs_read_bb_FILE2, and
                ext2fs_badblocks_equal.

        * tst_badblocks.c: Update test program to test
                ext2fs_read_bb_FILE2 and ext2fs_write_FILE.

        * write_bb_file.c (ext2fs_write_bb_FILE): New function which
                writes out bad blocks list to a file.

        * read_bb_file.c (ext2fs_read_bb_FILE2): Add new function which
                changes the callback function to take two additional
                arguments; a private blind pointer supplied by the caller,
                and pointer to a char * containing a pointer to the
                invalid string.

        * badblocks.c (ext2fs_badblocks_equal): Add new function which
                returns true if two badblocks list are equal.

        * Makefile.in: Remove explicit link of -lc in the shared library.
                (It shouldn't be necessary, and is harmful in some cases).

2000-06-10  Theodore Ts'o  <tytso@valinux.com>

        * getsize.c (main): Add debugging code under #ifdef DEBUG

2000-05-27  Theodore Ts'o  <tytso@valinux.com>

        * mkdir.c (ext2fs_mkdir): Read the parent directory's inode
                earlier, so that if there's an error reading it, we can
                more cleanly back out of the operation.

2000-05-25    <tytso@snap.thunk.org>

        * getsize.c (ext2fs_get_device_size): Use open64() instead of
                open() if it exists.  Under linux, manually define the
                ioctl for BLKGETSIZE if it isn't already defined and it's
                safe to do so.

        * unix_io.c (unix_open): Use open64() instead of open() if it
                exists. 

        * llseek.c: Simplify header includes of unistd.h.  If lseek64 is
                available (and prototypes are defined) use it in
                preference to llseek.

        * Makefile: Add hack dependency rule so that parallel makes work
                correctly. 

2000-05-18  Theodore Ts'o  <tytso@valinux.com>

        * ext2fs.h: Add appropriate ifdef's to support C++ compilation.

2000-04-03  Theodore Ts'o  <tytso@valinux.com>

        * block.c: Readibility tweak in conditionals involving
                ctx->fs->flags.

        * ext2fs.h: Use AUTOCONF SIZEOF_* macros if available to determine
                how to define __s64 and __u64.  Turn off "compression is
                experimental" warning if the cpp macro
                I_KNOW_THAT_COMPRESSION_IS_EXPERIMENTAL is defined.

2000-02-11    <tytso@snap.thunk.org>

        * ext2fs.h: Define EXT2FS_COMPRESSED_BLKADDR and HOLE_BLKADDR.
                Conditionally include Compression as a supported type if
                ENABLE_COMPRESSION (via --enable-compression) is turned on.

        * swapfs.c (ext2fs_swap_super): Swap the compression usage bitmap.

2000-02-08    <tytso@snap.thunk.org>

        * bitops.h (ext2fs_mark_generic_bitmap, ext2fs_unmark_generic_bitmap,
                ext2fs_mark_block_bitmap, ext2fs_unmark_block_bitmap,
                ext2fs_mark_inode_bitmap, ext2fs_unmark_inode_bitmap):
                Change to return the previous state of the bit that is
                being marked or unmarked.  For speed optimization.
        
2000-02-02  Theodore Ts'o  <tytso@valinux.com>

        * getsize.c, ismounted.c: Remove unneeded include of linux/fs.h

        * swapfs.c: Remove #ifdef HAVE_EXT2_INODE_VERSION since it's not
                needed any more; we know it will always be i_generation.
                Add support for swapping the high bits of the uid and gid.

1999-11-19    <tytso@valinux.com>

        * mkdir.c (ext2fs_mkdir): Only update the parent's inode link
                counts if the link was successful.  Patch suggested by
                jeremy@goop.org.

        * Makefile.in (distclean): Remove TAGS and Makefile.in.old from
                the source directory.

1999-11-10    <tytso@valinux.com>

        * Release of E2fsprogs 1.18

1999-11-08    <tytso@valinux.com>

        * Makefile.in (tst_badblocks): Add freefs.o to the object list,
                since ext2fs_badblocks_list_free was moved to freefs.c.

        * tst_badblocks.c: Use the newer badblocks API names.  Add
                duplicate blocks to the test inputs to test dealing with
                adding blocks which are already in the badblocks list.

        * badblocks.c (ext2fs_badblocks_list_add): If appending to the end
                of the list, use a shortcut O(1) operations instead of an
                O(n) operation.  (Idea suggested by David Beattie.)

        * freefs.c (ext2fs_free): Use ext2fs_badblocks_list_free() instead
                of badblocks_list_free(), to save a procedure call.

1999-10-26    <tytso@valinux.com>

        * Release of E2fsprogs 1.17

1999-10-26    <tytso@valinux.com>

        * ext2fs.h: Add kludge to deal with the fact that egcs cpp doesn't
                seem to handle ~0UL the same way as they used to.

1999-10-25    <tytso@valinux.com>

        * nt_io.c (_OpenNtName): Open the device using
                FILE_SYNCHRONOUS_IO_NONALERT instead of
                FILE_SYNCHRONOUS_IO_ALERT
                (nt_open): At the end of the device open routine, unlock 
                the drive but do not dismount it.

        * initialize.c (CREATOR_OS): Use __GNU__ instead of __gnu__ to
                detect the Hurd OS.

1999-10-22    <tytso@valinux.com>

        * Release of E2fsprogs 1.16

1999-10-22    <tytso@valinux.com>

        * mkdir.c (ext2fs_mkdir): Pass EXT2_FT_DIR flag to ext2fs_link().

        * link.c (ext2fs_link): This call now uses the low three bits of
                the flags parameter to pass the directory filetype
                information; it will set the directory entry FILETYPE
                information if the filesystem supports it.

        * newdir.c (ext2fs_new_dir_block): If the FILETYPE superblock
                option is set, then create the '.' and '..' entries with
                the filetype set to EXT2_FT_DIR.

1999-09-24    <tytso@valinux.com>

        * nt_io.c: New file which supports I/O under Windows NT.

1999-09-07    <tytso@valinux.com>

        * ext2fs.h: Add new fields for journalling and define new
                feature bits used by newer filesystems: IMAGIC_INODES,
                HAS_JOURNAL, RECOVER.

        * expanddir.c (ext2fs_expand_dir, expand_dir_proc): Change where
                we update the inode block count and size files so that the
                block count field is updated correctly when we create an
                indirect block.

1999-07-18  Theodore Ts'o  <tytso@valinux.com>

        * Release of E2fsprogs 1.15

1999-06-23    <tytso@valinux.com>

        * swapfs.c (ext2fs_swap_inode): Add compatibility for Linux 2.3
                kernels that use i_generation instead of i_version.  Patch
                supplied by Jon Bright <sircus@sircus.demon.co.uk>.

1999-06-21    <tytso@valinux.com>

        * dir_iterate.c (ext2fs_process_dir_block): Check for corrupted
                directory entry before calling the callback function.
                This should prevent some core dumps of insufficiently
                paranoid callback functions.

1999-05-29    <tytso@rsts-11.mit.edu>

        * ext2fs.h: Add feature definition for AFS IMAGIC inodes.

        * fileio.c (ext2fs_file_open): Remove obsolete comment stating
                that we don't handle writing yet (we do).  Fixed bug where
                we weren't allocating a big enough buffer for ext2_bmap.

1999-05-03    <tytso@rsts-11.mit.edu>

        * openfs.c (ext2fs_open): Check to make sure that the number of
                blocks per group is not zero --- if so, it must be a bad
                superblock!

1999-01-09  Theodore Ts'o  <tytso@rsts-11.mit.edu>

        * Release of E2fsprogs 1.14

1999-01-07  Theodore Ts'o  <tytso@rsts-11.mit.edu>

        * inode.c (ext2fs_read_inode, ext2fs_write_inode): Check to see if
                the inode number is zero; if it's zero, return
                EXT2_ET_BAD_INODE_NUM.

1998-12-30  Theodore Ts'o  <tytso@rsts-11.mit.edu>

        * initialize.c (ext2fs_initialize): Use EXT2_FIRST_INODE instead
                of EXT2_FIRST_INO to ensure compatibility with Linux 1.2
                header files.

Mon Jan  4 02:32:09 1999  Theodore Y. Ts'o  <tytso@mit.edu>

        * llseek.c (ext2fs_llseek): Change ext2fs_llseek() in the
                non-Linux case to use EINVAL by default, unless it isn't
                defined, in which case we use EXT2_ET_INVALID_ARGUMENT
                instead.

1998-12-15  Theodore Ts'o  <tytso@rsts-11.mit.edu>

        * Release of E2fsprogs 1.13

1998-12-03  Theodore Ts'o  <tytso@rsts-11.mit.edu>

        * Makefile.in: Updated dependencies.

1998-09-22  Theodore Ts'o  <tytso@rsts-11.mit.edu>

        * initialize.c (ext2fs_initialize): Make sure that we allocate
                enough inodes so that we can make a valid filesystem.

1998-09-02  Theodore Ts'o  <tytso@rsts-11.mit.edu>

        * rw_bitmaps.c: Fixed signed/unsigned warnings.

        * fileio.c (ext2fs_file_set_size): Remove unneeded extern from the
                function declaration.

        * dblist.c (make_dblist): Add safety check in case the dblist
                pointer passed in is null (in which case, assign it to
                fs->dblist).  Fixed some signed/unsigned warnings.

        * bmap.c: Make addr_per_block be of type blk_t to avoid
                signed/unsigned warnings.

        * namei.c (ext2fs_follow_link): Remove uneeded extern from the
                function declaration.

        * get_pathname.c (get_pathname_proc): Use return value from
                ext2fs_get_mem, instead of checking if &gp->name is
                NULL.

        * dir_iterate.c (ext2fs_process_dir_block): 
        * dblist_dir.c (ext2fs_dblist_dir_iterate): Remove uneeded extern
                from the function declaration.

        * block.c (ext2fs_block_iterate2): If the read_inode call fails,
                return the error directly instead of jumping to the
                cleanup routine, since we don't need to do any cleanup.

        * alloc_table.c (ext2fs_allocate_group_table): Make this
                function take a dgrp_t for its group argument.

        * ext2fs.h: Make dgrp_t an __u32 type, and make
                fs->desc_group_count be of type dgrp_t.

1998-07-27  Theodore Ts'o  <tytso@rsts-11.mit.edu>

        * badblocks.c (ext2fs_badblocks_list_add): Use a bigger increment
                than 10 blocks when we need to expand the size of the
                badblocks list.

1998-07-09  Theodore Ts'o  <tytso@rsts-11.mit.edu>

        * Release of E2fsprogs 1.12

1998-06-30  Theodore Ts'o  <tytso@rsts-11.mit.edu>

        * closefs.c (ext2fs_flush): Update the s_block_group_nr field as
                appropriate for all of the block group copies, so that
                it's clear where the beginning of the filesystem is on the
                disk.  (For when the partition table gets scrod.)

        * ext2fs.h: Change the name of the feature from
                EXT2_FEATURE_INCOMPAT_DIRNAME_SIZE to
                EXT2_FEATURE_INCOMPAT_FILESIZE (to match with the kernel).

1998-06-18  Theodore Ts'o  <tytso@rsts-11.mit.edu>

        * inode.c (get_next_blockgroup): Fix bug where if
                get_next_blockgroup() is called early because of a missing
                inode table in a block group, the current_inode counter
                wasn't incremented correctly.

1998-06-16  Theodore Ts'o  <tytso@rsts-11.mit.edu>

        * read_bb.c (ext2fs_read_bb_inode): Make function more robust
                against a completely trashed bad block inode.

1998-06-10  Theodore Ts'o  <tytso@rsts-11.mit.edu>

        * alloc_tables.c (ext2fs_allocate_group_table): Fix bug so that if
                the stride length hits a bad value, we retry the block
                allocation starting at the beginning of the block group.

        * ext2fs.h, bb_inode.c, block.c, bmove.c, dir_iterate.c,
                expanddir.c, ext2fsP.h, read_bb.c: Change blkcnt_t to be
                e2_blkcnt_t to avoid collision with LFS API.

1998-05-01  Theodore Ts'o  <tytso@rsts-11.mit.edu>

        * initialize.c (ext2fs_initialize): Initialize s_inodes_count in a
                way that avoids overflows on disk sizes greater than 4GB.

1998-04-28  Theodore Ts'o  <tytso@rsts-11.mit.edu>

        * ext2fs.h: Define EXT2_QSORT_TYPE appropriately for the
                return type for comparison functions for qsort.

        * dblist.c (dir_block_cmp): Use EXT2_QSORT_TYPE in function
                declaration.

1998-04-26  Theodore Ts'o  <tytso@rsts-11.mit.edu>

        * ext2fs.h, bitops.h: Add support for the Watcom C compiler to do
                inline functions.

        * ext2fs.h, dosio.c: Use asm/types.h instead of linux/types.h to
                evade a potential problem with glibc's header files trying
                to spike out linux/types.h.

        * ext2fs.h (ext2fs_resize_mem): Change the function prototype to
                include the old size of the memory, which is needed for
                some braindamaged memory allocation systems that don't
                support realloc().

        * badblocks.c (ext2fs_badblocks_list_add):
          bb_inode.c (clear_bad_block_proc):
          dblist.c (ext2fs_add_dir_block):
          icount.c (insert_icount_el):
          irel_ma.c (ima_put):
          rs_bitmap.c (ext2fs_resize_generic_bitmap): Update functions to
                  pass the old size of the memory to be resized to
                  ext2fs_resize_mem(). 

1998-03-30  Theodore Ts'o  <tytso@rsts-11.mit.edu>

        * Makefile.in: Change to use new installation directory variables
                convention.  Fix uninstall rules to take $(DESTDIR) into
                account.

1998-03-29  Theodore Ts'o  <tytso@rsts-11.mit.edu>

        * ext2fs.h: If __STRICT_ANSI__ is defined and we're on a platform
                with 32 bit longs, then we need to manually define __s64
                and __u64, since the current kernel header files don't
                define these if __STRICT_ANSI__ is defined.  This is a
                problem if we are compiling with full GCC warnings, since
                we do need 64 bit support.
        
        * Makefile.in (OBJS): Remove bmove.o from files to be built,
                since we're not using ext2fs_move_blocks() and there
                is some question as to its usefulness in its current
                form.

        * bmap.c (block_bmap): Remove unused function.

        * bmove.c (process_block): Fix -Wall warning.

1998-03-23  Theodore Ts'o  <tytso@rsts-11.mit.edu>

        * block.c (ext2fs_block_iterate3): Make the ref_offset field
                contain the offset into the inode.i_blocks array when
                ref_block is zero.  Since we haven't done a formal
                release of e2fsprogs since block_iterate2 was first
                introduced, I removed block_iterate2, and renamed
                block_iterate3 to be block_iterate2.

        * bb_inode.c, bmove.c, dblist_dir.c, dir_iterate.c,
                expanddir.c, ext2fs.h, ext2fsP.h, read_bb.c: Change
                use of block_iterate and block_iterate2 to
                block_iterate2 with the new prototype for the
                interator function.  (using blkcnt_t forr blockcount)

1998-03-21  Theodore Ts'o  <tytso@rsts-11.mit.edu>

        * ext2fs.h: Add new superblock fields (s_algorithm_usage_bitmap, 
                s_prealloc_blocks, s_prealloc_dir_blocks).  Added
                conditional defines of new features COMPAT_DIR_PREALLOC,
                RO_COMPAT_LARGE_FILE RO_COMPAT_BTREE_DIR,
                INCOMPAT_COMPRESSION, INCOMPAT_DIRNAME_SIZE.  Changed
                the library to declare that we support COMPAT_DIR_PREALLOC, 
                INCOMPAT_DIRNAME_SIZE, RO_COMPAT_LARGE_FILE.

        * fileio.c: Rename function ext2fs_file_llseek to be
                ext2fs_file_lseek, which is more accurate.

        * block.c: Add new function ext2fs_block_iterate3 which calls
                the iterator function with the blockcount argument of
                type blkcnt_t.  This version of the function is
                allowed to handle large files; the other fucntions are
                not.

        * ext2fs.h: Add new type blkcnt_t

        * ext2_err.et.in: Add error code EXT2_ET_FILE_TOO_BIG

        * block.c (ext2fs_block_iterate2): Fix bug where the block count
                field wasn't getting correctly incremented for sparse
                files when the indirect or doubly-indirect block
                specified in the inode was zero.

Sun Mar  8 22:42:47 1998  Theodore Ts'o  <tytso@rsts-11.mit.edu>

        * unlink.c (unlink_proc): 
        * lookup.c (lookup_proc): 
        * link.c (link_proc): 
        * get_pathname.c (get_pathname_proc): 
        * dir_iterate.c (ext2fs_process_dir_block): Mask off high 8 bits
                from dirent->name_len, so it can be used for other
                purposes.

        * ext2fs.h: Add definition of EXT2_FEATURE_INCOMPAT_DIRNAME_SIZE,
                and indicate that we have support for this incompatible
                option.

Mon Feb 23 08:46:33 1998  Theodore Ts'o  <tytso@rsts-11.mit.edu>

        * ext2_err.et.in: Added new error code, EXT2_ET_CANCEL_REQUESTED.

Fri Feb 20 23:58:01 1998  Theodore Ts'o  <tytso@rsts-11.mit.edu>

        * dblist.c (ext2fs_get_num_dirs): Improve the estimation of the
                number of directories when the block group information is
                unreliable.

1998-02-20  Theodore Y. Ts'o  <tytso@edt.mit.edu>

        * inode.c (ext2fs_get_next_inode): Always do the check to see if the
                inode table is missing so that we catch the case where the
                first block group is missing.

        * getsize.c, ismounted.c, unix_io.c: #include errno.h since it's
                needed.

Mon Feb 16 16:16:00 1998  Theodore Ts'o  <tytso@rsts-11.mit.edu>

        * ext2_io.h, ext2fs.h: Protect against being included multiple times.

        * bmove.c: #include ext2fsP.h instead of "ext2fs/ext2fs.h"

        * test_io.c (test_flush): Add a debugging printf when the flush
                method is called.

        * rw_bitmaps.c (ext2fs_read_bitmaps): If the bitmaps are already
                read in, return right away.

Sun Feb  1 08:20:24 1998  Theodore Ts'o  <tytso@rsts-11.mit.edu>

        * bitops.h: Don't try to do i386 inline asm functions if the
                compiler isn't GCC.

        * ext2fs.h: If EXT2_FLAT_INCLUDES is defined, #include e2_types.h,
                instead of linux/types.h, and e2_bitops.h instead of
                ext2fs/bitops.h.

        * icount.c, version.c: Don't #include <et/com_err.h>, as it isn't
                necessary. 

Sat Jan 17 13:13:31 1998  Theodore Ts'o  <tytso@rsts-11.mit.edu>

        * inode.c (ext2fs_open_inode_scan): Initialize the group variables
                so that we don't need to call get_next_blockgroup() the
                first time around.  Saves a bit of time, and prevents us
                from needing to assign -1 to current_group (which is an
                unsigned value).

        * icount.c (insert_icount_el): Cast the estimated number of inodes
                from a float to an ino_t.

        * alloc.c, alloc_tables.c, badlbocks.c, bb_compat.c, bb_inode.c,
                bitmaps.c, bitops.c, block.c, bmap.c, bmove.c, brel_ma.c,
                check_desc.c, closefs.c, cmp_bitmaps.c, dblist.c,
                dblist_dir.c, dir_iterate.c, dirblock.c, dupfs.c,
                expanddir.c, ext2fs.h, fileio.c, freefs.c,
                get_pathname.c, getsize.c, icount.c, initialize.c,
                inline.c, inode.c, irel_ma.c, ismounted.c, link.c,
                lookup.c, mkdir.c, namei.c, native.c, newdir.c,
                openfs.c, read_bb.c, read_bb_file.c, rs_bitmap.c,
                rw_bitmaps.c, swapfs.c, test_io.c, tst_badblocks.c,
                tst_getsize.c, tst_iscan.c, unix_io.c, unlink.c,
                valid_blk.c, version.c: If EXT2_FLAT_INCLUDES is
                defined, then assume all of the
                ext2-specific header files are in a flat directory.

        * block.c, bmove.c, dirblock.c, fileio.c: Explicitly cast
                all assignments from void * to be compatible with C++.

Tue Jan  6 11:28:15 1998  Theodore Ts'o  <tytso@rsts-11.mit.edu>

        * closefs.c (ext2fs_flush): Add a call to io_channel_flush() to
                make sure the contents of the disk are flushed to disk.

Mon Dec 29 14:39:13 1997  Theodore Ts'o  <tytso@rsts-11.mit.edu>

        * dblist.c (ext2fs_add_dir_block): Change new to be new_entry to
                avoid C++ namespace clash.

        * bitmaps.c (ext2fs_copy_bitmap): Change new to be new_map to
                avoid C++ namespace clash.

        * ext2fs.h, bb_inode.c, block.c, bmove.c, brel.h, brel_ma.c,
                irel.h, irel_ma.c, dblist.c, dblist_dir.c, dir_iterate.c,
                ext2fsP.h, expanddir.c, get_pathname.c, inode.c, link.c,
                unlink.c: Change private to be priv_data (to avoid C++
                namespace clash)

Fri Nov 28 09:26:31 1997  Theodore Ts'o  <tytso@rsts-11.mit.edu>

        * dblist.c (ext2fs_get_num_dirs): Make ext2fs_get_num_dirs more
                paranoid about validating the directory counts from the
                block group information.

        * all files: Don't include stdlib.h anymore; include it in
                ext2_fs.h, since that file requires stdlib.h

Thu Nov 20 16:07:38 1997  Theodore Ts'o  <tytso@rsts-11.mit.edu>

        * expanddir.c (ext2fs_expand_dir): Check to make sure the block
                bitmap is loaded, and return an error if it is not.
                (expand_dir_proc): Only use ext2fs_write_dir_block when
                writing a directory block, not when writing out a fresh
                indirect block.

Tue Nov 11 22:46:45 1997  Theodore Ts'o  <tytso@rsts-11.mit.edu>

        * Makefile.in, tst_getsize.c: Added new file which is used to test
                the ext2fs_get_device_size function.

        * ext2_err.et.in (EXT2_ET_UNIMPLEMENTED): Added new error code.

Sun Nov  2 20:36:13 1997  Theodore Ts'o  <tytso@rsts-11.mit.edu>

        * ext2fs.h: Make ext2fs_get_mem take an unsigned argument.

        * fileio.c (ext2fs_file_get_size, ext2fs_file_set_size,
                ext2fs_file_get_fs): New functions added.


Fri Oct 31 12:16:52 1997    <tytso@EDT.MIT.EDU>

        * bitops.c (ext2fs_warn_bitmap, ext2fs_warn_bitmap2): Don't call
                com_err if OMIT_COM_ERR is defined.

Thu Oct 30 11:33:57 1997  Theodore Ts'o  <tytso@rsts-11.mit.edu>

        * Rename new error codes to _ET_ in them for consistency.

Sat Oct 25 00:06:58 1997  Theodore Ts'o  <tytso@rsts-11.mit.edu>

        * [all files, basically]: Added definition of ext2fs_get_mem, 
                ext2fs_free_mem, and ext2fs_resize_mem in ext2fs.h, and
                changed all library routines to use these wrapper functions.

        * dblist.c, mkdir.c: use EXT2_DIR_EXISTS and EXT2_DB_NOT_FOUND
                instead of the system error messages.
        
        * ext2_err.et.in: Added new error messages EXT2_DIR_EXISTS and
                EXT2_DB_NOT_FOUND

        * ext2fs.h: Added function declarations and constants for bmap.c
                and fileio.c.

        * ext2_err.et.in: Added new error messages EXT2_FILE_RO and
                EXT2_ET_MAGIC_EXT2_FILE

        * Makefile.in: Added files bmap.c and fileio.c, and temporarily
                commented out brel_ma.c and irel_ma.c

        * bmap.c: New file which maps a file's logical block number to its
                physical block number.

        * fileio.c: New file which implements simple file reading and
                writing primitives.

        * alloc.c (ext2fs_alloc_block): New function which allocates a
                block, zeros it, and updates the filesystem accounting
                records appropriately.

Wed Oct 22 16:47:27 1997  Theodore Ts'o  <tytso@rsts-11.mit.edu>

        * ext2_err.et.in: Added new error codes: EXT2_NO_MEMORY,
                EXT2_INVALID_ARGUMENT, EXT2_BLOCK_ALLOC_FAIL,
                EXT2_INODE_ALLOC_FAIL, EXT2_NOT_DIRECTORY

        * Change various library files to use these functions instead of
                EINVAL, ENOENT, etc.

Mon Oct 20 19:32:40 1997  Theodore Ts'o  <tytso@rsts-11.mit.edu>

        * llseek.c: Check HAVE_LLSEEK_PROTOTYPE to see whether or not we
                need to declare llseek().

Sun Oct 19 18:56:22 1997  Theodore Ts'o  <tytso@rsts-11.mit.edu>

        * Rename io.h to be ext2_io.h (avoid namespace collisions)

        * Add #ifdef's for HAVE_SYS_STAT_H and HAVE_SYS_TYPES_H

Fri Oct  3 13:35:59 1997  Theodore Ts'o  <tytso@rsts-11.mit.edu>

        * llseek.c (ext2fs_llseek): Fix type error for ext2fs_llseek()

        * icount.c (ext2fs_icount_validate): 
        * bmove.c (process_block): Fix lint error in type for fprintf().

Mon Sep 15 11:45:09 1997  Theodore Ts'o  <tytso@rsts-11.mit.edu>

        * inode.c (ext2fs_check_directory): Add support for the callback
                to return the error code EXT2_ET_CALLBACK_NOTHANDLED.

Thu Sep  4 12:28:22 1997  Theodore Ts'o  <tytso@rsts-11.mit.edu>

        * bitmaps.c (ext2fs_set_bitmap_padding): New function which sets the
                padding of the bitmap to be all one's.

Wed Sep  3 14:27:30 1997  Theodore Y. Ts'o  <tytso@edt.mit.edu>

        * llseek.c: Added missing semicolon to glibc fixup declaration of
        llseek().

        * bmove.c: Add #include of errno.h

Sat Aug 23 22:47:46 1997  Theodore Ts'o  <tytso@rsts-11.mit.edu>

        * Makefile.in (ELF_SO_VERSION): Bump version to be 2.4 since we've
                added a new field to the io_channel (app_data).

        * io.h: Add a new element to the io_channel structure, app_data.

        * initialize.c, openfs.c: Set io->app_data to point at the
                filesystem handle.

Thu Aug 14 08:14:17 1997  Theodore Ts'o  <tytso@rsts-11.mit.edu>

        * io.h: Change the prototype of ext2fs_llseek() to use int's
                instead of unsigned int's.

        * llseek.c: Change to allow PIC and !HAVE_LLSEEK.  Add a prototype
                to make life easer for GNU Libc 2.

        * rw_bitmaps.c: On the PowerPC, the big-endian variant of the ext2
                filesystem has its bitmaps stored as 32-bit words with bit
                0 as the LSB of each word.  Thus a bitmap with only bit 0
                set would be, as a string of bytes, 00 00 00 01 00 ...  To
                cope with this, we byte-reverse each word of a bitmap if
                we have a big-endian filesystem, that is, if we are *not*
                byte-swapping other word-sized numbers.

Mon Aug 11 03:30:48 1997  Theodore Ts'o  <tytso@rsts-11.mit.edu>

        * dosio.c: New file to do DOS/BIOS disk accesses.

        * namei.c (open_namei): Make pathlen be of type size_t.

        * llseek.c: Always #include stdlib.h since it's need to define
                size_t.  

        * io.h: Use errcode_t for magic numbers.

        * icount.c (get_icount_el): Use size_t where appropriate
        
        * dupfs.c (ext2fs_dup_handle): 
        * dblist.c (dir_block_cmp): Use size_t where appropriate.

        * read_bb.c (ext2fs_read_bb_inode): 
        * cmp_bitmaps.c (ext2fs_compare_inode_bitmap): Use blk_t, ino_t
                and size_t where appropriate.

        * closefs.c (ext2fs_flush): Use dgrp_t instead of int where
                appropriate.

        * openfs.c (ext2fs_open): 
        * check_desc.c (ext2fs_check_desc): Use blk_t instead of int where
                appropriate.

        * rw_bitmaps.c (read_bitmaps): 
        * irel_ma.c: 
        * inode.c (ext2fs_write_inode): 
        * initialize.c (ext2fs_initialize):
        * brel_ma.c: Fix to make be 16-bit safe.

        * link.c (ext2fs_link): 
        * unlink.c (ext2fs_unlink):
        * lookup.c (lookup_proc): 
        * ismounted.c (ext2fs_check_if_mounted): 
        * block.c (xlate_func): Add #pragma argsused for Turbo C.

Sun Aug 10 10:05:22 1997  Theodore Ts'o  <tytso@rsts-11.mit.edu>

        * block.c (ext2fs_block_iterate2): Use retval which is a errcode_t
                type.

        * bitmaps.c (make_bitmap): Use size_t instead of int where
                appropriate.

        * bb_inode.c (set_bad_block_proc): Add #pragma argsused for Turbo C.

        * alloc.c (ext2fs_new_inode): Use ino_t instead of int for the
                group number.

        * get_pathname.c: Use ino_t instead of int where appropriate.

        * ext2fs.h: Make the magic structure element be errcode_t instead
                of int.

        * alloc.c alloc_tables.c badblocks.c bb_compat.c bb_inode.c
                bitmaps.c block.c bmove.c brel_ma.c check_desc.c closefs.c
                cmp_bitmaps.c dblist.c dblist_dir.c dir_iterate.c
                dirblock.c dupfs.c expanddir.c freefs.c get_pathname.c
                icount.c initialize.c inline.c inode.c irel_ma.c link.c
                llseek.c lookup.c mkdir.c namei.c newdir.c read_bb.c
                read_bb_file.c rs_bitmap.c rw_bitmaps.c swapfs.c 
                test_io.c tst_badblocks.c tst_iscan.c unix_io.c unlink.c
                valid_blk.c version.c: Add an #ifdef for HAVE_UNISTD_H

Tue Jun 17 01:33:20 1997  Theodore Ts'o  <tytso@rsts-11.mit.edu>

        * unix_io.c (unix_read_blk): If ext2fs_llseek() fails, but errno
                is zero, then return EXT2_IO_LLSEEK_FAILED.

        * ext2_err.et.in: Add a new error code, EXT2_IO_LLSEEK_FAILED.

        * Release of E2fsprogs 1.11

Mon Jun 16 23:53:06 1997  Theodore Ts'o  <tytso@rsts-11.mit.edu>

        * dblist.c (ext2fs_dblist_count): Added new function which returns
                the number of directory blocks in dblist.

Sat Jun 14 01:39:13 1997  Theodore Ts'o  <tytso@rsts-11.mit.edu>

        * unix_io.c (unix_flush): Make the io_channel flush function do a
                fsync to flush the kernel buffers to disk.

Wed Jun 11 18:25:31 1997  Theodore Ts'o  <tytso@rsts-11.mit.edu>

        * inode.c (ext2fs_inode_scan_goto_blockgroup): Fix bug; the
                current inode number wasn't being set by the
                goto_blockgroup function.

Mon Jun  9 10:45:48 1997  Theodore Ts'o  <tytso@rsts-11.mit.edu>

        * bmove.c (ext2fs_move_blocks): New function which takes a bitmap
                of blocks which need to be moved, and moves those blocks
                to another location in the filesystem.

        * rs_bitmap.c (ext2fs_resize_generic_bitmap): When expanding a
                bitmap, make sure all of the new parts of the bitmap are
                zero. 

Sun Jun  8 16:24:39 1997  Theodore Ts'o  <tytso@rsts-11.mit.edu>

        * bitmaps.c (ext2fs_copy_bitmap): Fix bug; the destination bitmap
                wasn't being returned to the caller.

        * alloc_tables.c (ext2fs_allocate_group_table): Add new function
                ext2fs_allocate_group_table() which sets the group tables
                for a particular block group.  The relevant code was
                factored out of ext2fs_allocate_tables().

        * dblist.c (make_dblist): Adjust the initial size of the directory
                block list to be a bit more realistic (ten plus twice the
                number of directories in the filesystem).

Thu May  8 22:19:09 1997  Theodore Ts'o  <tytso@rsts-11.mit.edu>

        * badblocks.c (ext2fs_badblocks_list_test): Fix bug where
                ext2fs_badblocks_list_test would test the list (and exceed
                array boundaries) if there were no bad blocks on the bad
                blocks list.  (Showed up when user tried: mke2fs -c -b 4096).

Thu Apr 24 12:16:42 1997  Theodre Ts'o  <tytso@localhost.mit.edu>

        * Release of E2fsprogs version 1.10

Thu Apr 24 10:13:42 1997  Theodre Ts'o  <tytso@localhost.mit.edu>

        * alloc_tables.c (ext2fs_allocate_tables): Correctly place the
                inode and block bitmaps based on the RAID 0 stride
                parameter (which is passed by mke2fs).

        * ext2fs.h: Add "stride" parameter to ext2_filsys, to be used by
                mke2fs to communicate the stride length to
                ext2fs_allocate_tables()

Wed Apr 23 21:50:42 1997  Theodre Ts'o  <tytso@localhost.mit.edu>

        * initialize.c (ext2fs_initialize): Fix to compile under Linux 1.2
                systems.  (We can't assume that the new filesystem types
                are supported.)

Wed Apr 23 18:40:53 1997  Theodore Ts'o  <tytso@rsts-11.mit.edu>

        * alloc_tables.c (ext2fs_allocate_tables): Make sure that we
                allocate the inode and block bitmaps inside block group at
                all times.

Mon Apr 21 00:06:28 1997  Theodore Ts'o  <tytso@rsts-11.mit.edu>

        * alloc.c (ext2fs_new_block): Fix bug where if goal==0 and the
                filesystem has no free blocks, ext2fs_new_block would loop
                forever.

        * dupfs.c (ext2fs_dup_handle): Duplicate an ext2 filesystem handle

        * freefs.c (ext2fs_free_inode_cache): Decrement refcount and only
                free if refcount goes to zero.

        * inode.c (create_icache): Initialize refcount to 1.

        * ext2fsP.h: Added refcount to ext2_inode_cache

        * dblist.c (ext2fs_copy_dblist): New function to copy a directory
                block list.

        * badblocks.c (ext2fs_badblocks_copy): New function to copy a
                badblocks structure.

Sun Apr 20 23:19:51 1997  Theodore Ts'o  <tytso@rsts-11.mit.edu>

        * bitmaps.c (ext2fs_copy_bitmap): New function to copy a bitmap.

        * unix_io.c, test_io.c (unix_open, test_open): Initialize the
                refcount to 1.
                (unix_close, test_close): Decrement the refcount and only
                close the io_channel if the refcount goes to 0.

        * io.h: Add refcount to the io_channel structure.  Add new macro
                interface io_channel_bumpcount() to bump the refcount.

Thu Apr 17 20:25:03 1997  Theodore Ts'o  <tytso@rsts-11.mit.edu>

        * inode.c (ext2fs_read_inode, ext2fs_write_inode): Use the inode
                cache in the filesystem handle, instead of the inode cache
                in a static variable.

        * freefs.c: Added static function to free the inode cache (called by
                ext2fs_free). 

        * ext2fsP.h: Added definition of the ext2_inode_cache structures.

        * ext2fs.h: Added pointer to the inode_cache structure.

        * block.c (block_iterate_ind, block_iterate_dind, 
                block_iterate_tind): If there are holes in the indirect,
                doubly indirect, or triply indirect blocks, increment the
                block count field automatically.

Thu Apr 17 12:23:38 1997  Theodore Ts'o  <tytso@rsts-11.mit.edu>

        * Release of E2fsprogs version 1.09

Mon Apr 14 20:38:56 1997  Theodore Ts'o  <tytso@rsts-11.mit.edu>

        * version.c (ext2fs_parse_version_string): Check the passed in
                version string (instead of the hard-coded one).

        * alloc_tables.c (ext2fs_allocate_tables): If the last block is
                greater filesystem size, clamp it to prevent allocating a
                block or inode bitmap beyond the filesystem.

        * initialize.c (ext2fs_initialize): Fix bug where the metatdata
                overhead calculation was accidentally removed.

Fri Apr 11 18:56:26 1997  Theodore Ts'o  <tytso@rsts-11.mit.edu>

        * Release of E2fsprogs version 1.08

Thu Apr 10 13:15:15 1997  Theodore Ts'o  <tytso@rsts-11.mit.edu>

        * dblist.c (ext2fs_set_dir_block): New function which sets the
                block of a dblist entry, given the directory inode and
                blockcnt.

Sat Apr  5 12:42:42 1997  Theodore Ts'o  <tytso@rsts-11.mit.edu>

        * alloc_tables.c (ext2fs_allocate_tables): Allocate the bitmap and
                inode bitmaps at staggered locations across the block
                groups, to avoid concentrating the bitmaps on a small
                number of disks when using striped RAID arrays.

        * initialize.c (ext2fs_initialize): By default, choose the maximum
                possible number of blocks per group (based on the size of
                the bitmaps in the blocksize).

Fri Apr  4 11:28:16 1997  Theodore Ts'o  <tytso@rsts-11.mit.edu>

        * initialize.c (ext2fs_initialize): Add support for
                EXT2_COMPAT_SPARSE_SUPER feature.

        * closefs.c (ext2fs_bg_has_super): New function to determine
                whether or a particular block group should have a
                superblock and block group descriptor.  Used for the
                EXT2_COMPAT_SPARSE_SUPER feature is turned on.
                (ext2fs_flush):  Check ext2fs_bg_has_super to see whether
                or not the superblock should be written out for the block
                group. 

        * ext2fs.h (EXT2_COMPAT_SPARSE_SUPER): Define compatibility flag
                for sparse duplicate superblocks.

        * version.c (ext2fs_get_library_version): New function which
                returns the library version.

        * version.c (ext2fs_parse_version_string): New function which
                parses a version string and returns a version number,
                so application programs can compare version numbers as
                integers.

Wed Mar 26 00:43:52 1997  Theodore Ts'o  <tytso@rsts-11.mit.edu>

        * icount.c (ext2fs_create_icount): Change function so that it also
                takes a new argument which contains a "hint" icount
                structure.  This "hint" icount allows the create function
                to set up the sorted list in advance.  This reduces
                significantly the amount of data moving needed to insert
                these inodes into the list later.
        
        * icount.c (ext2fs_icount_validate): New function which validates
                that the icount structure's rep invariant.

        * icount.c (get_icount_el): Completely revamped implementation
                to subsume put_icount_el().  Put_icount_el() used to
                use an O(N) implementation to insert in the middle
                of the icount list.  It now uses a O(ln N) to search
                for where the icount should be inserted, and then uses
                a memcpy to move the list down (instead of a for loop).
        
        * icount.c (ext2fs_icount_fetch, ext2fs_icount_store,
                ext2fs_icount_increment, ext2fs_icount_decrement): Check
                to see if the inode is within bounds; if it isn't, return
                EINVAL.

        * bitops.h (ext2fs_test_generic_bitmap): Fix error message given
                when a bad inode number is passed to test_generic_bitmap
                to be EXT2FS_TEST_ERROR instead of the wrong
                EXT2FS_UNMARK_ERROR.

Wed Mar 12 13:32:05 1997  Theodore Y. Ts'o  <tytso@mit.edu>

        * Release of E2fsprogs version 1.07

Sun Mar  2 16:46:18 1997  Theodore Ts'o  <tytso@rsts-11.mit.edu>

        * Makefile.in (ELF_VERSION): Change version to be 2.2

Tue Feb 11 14:54:02 1997  Theodore Ts'o  <tytso@rsts-11.mit.edu>

        * alloc.c (ext2fs_get_free_blocks): Change routine to use
                ext2fs_fast_test_block_bitmap_range().

        * bitops.h (ext2fs_fast_test_block_bitmap_range,
                ext2fs_test_block_bitmap_range: New inline functions which
                test to see whether a contiguous range of blocks is
                available.

Thu Feb  6 10:00:13 1997  Theodore Ts'o  <tytso@rsts-11.mit.edu>

        * badblocks.c (ext2fs_badblocks_list_create): Rename sybmols to use
                use ext2fs_badblocks_* instead of badblocks_*

        * bb_compat.c: New file which translates between old badblocks_*()
                names to ext2fs_badblocks_*()

        * unlink.c (ext2fs_unlink): New file, moved ext2fs_unlink() from
                link.c (since e2fsck doesn't use ext2fs_unlink()).

        * rs_bitmap.c (ext2fs_resize_generic_bitmap): New file, contains
                bitmap resizing routine moved from bitmaps.c, since e2fsck
                doesn't need to use this function.

        * lookup.c (ext2fs_lookup): Moved ext2fs_lookup to its own file,
                since e2fsck only needs ext2fs_lookup.

Mon Feb  3 10:11:40 1997  Theodore Ts'o  <tytso@rsts-11.mit.edu>

        * inode.c (ext2fs_open_inode_scan): Set fs->badblocks if it is not
                already set; this is needed so that programs like dump
                which use the inode scan functions will deal with
                filesystems that have bad blocks in the inode table.

Sun Feb  2 00:17:36 1997  Theodore Ts'o  <tytso@rsts-11.mit.edu>

        * ext2fs.h (struct_badblocks_list, struct_badblocks_iterate): 
                Moved to ext2fsP.h, since it doesn't need to be part of
                the public interface.

        * dir_iterate.c: Move ext2_dir_iterate out of namei.c.

Sat Feb  1 10:14:55 1997  Theodore Ts'o  <tytso@rsts-11.mit.edu>

        * dblist.c (ext2fs_get_num_dirs): New file, which implements a
                directory block list abstraction.  (Code moved from
                e2fsck).

        * ext2fs.h, inode.c: Moved definition of ext2_struct_inode_scan to
                to inode.c (since no one else should be peeking inside it!)

        * valid_blk.c (ext2_inode_has_valid_blocks): New function.

        * openfs.c (ext2fs_open): Check the feature set in the ext2
                superblock, and refuse to open filesystems if they contain
                incompatible features.  (Can be overriden with the
                EXT2_FLAG_FORCE 

Sun Jan 12 11:31:46 1997  Theodore Ts'o  <tytso@rsts-11.mit.edu>

        * block.c (ext2fs_block_iterate2): Added new function
                ext2fs_block_iterate2 which changes the function
                signature of the callback function to include the
                referencing block and offset.

        * inode.c (ext2fs_inode_scan_goto_blockgroup): Added new function
                ext2fs_inode_scan_goto_blockgroup which allows an
                application to jump to a particular block group while
                doing an inode scan.

Wed Jan  1 23:50:12 1997  Theodore Ts'o  <tytso@rsts-11.mit.edu>

        * dirblock.c: Include string.h, since we use memcpy().

Tue Dec  3 12:27:29 1996  Theodore Ts'o  <tytso@rsts-11.mit.edu>

        * getsize.c (ext2fs_get_device_size): The ioctl BLKGETSIZE returns
                a long not an int; this doesn't matter on i386 machines,
                but it does on Alpha's.
        
Fri Nov 29 20:57:37 1996  Theodore Ts'o  <tytso@rsts-11.mit.edu>

        * inode.c (ext2fs_write_inode, ext2fs_read_inode): If the inode
                table pointer is NULL, then return an error indicating
                that the inode table is missing.
                (get_next_blockgroup, get_next_blocks,
                ext2fs_get_next_inode): Don't treat a missing inode table
                as permanent error.  Return MISSING_INODE_TABLE, but as an
                advisory error code, much like BAD_BLOCK_IN_INODE_TABLE.

        * rw_bitmaps.c (ext2fs_write_block_bitmap,
                ext2fs_write_inode_bitmap): If the inode or block bitmap
                block is zero, then don't write out the inode or block
                bitmap.  The idea here is to avoid stomping on the
                superblock.
                (read_bitmaps): If the inode or block bitmap block is
                zero, then fill in that portion of the inode or block
                bitmap with all zeros.

        * inode.c (ext2fs_get_next_inode): Fix bug in handling of bad
                blocks in inode table when the inode table size is
                non-standard (and can therefore span blocks).

Tue Oct 29 20:13:14 1996  Theodore Ts'o  <tytso@rsts-11.mit.edu>

        * alloc.c (ext2fs_new_block): Fix fencepost error in
                ext2fs_new_block; make sure we don't try to allocate the
                first block beyond the end of the filesystem.

Mon Oct 14 11:00:48 1996  Theodore Ts'o  <tytso@rsts-11.mit.edu>

        * inode.c (check_for_inode_bad_blocks): New function called by
                get_next_blocks() to avoid reading in bad blocks marked in
                fs->badblocks.  Inodes located in bad blocks are returned
                by ext2fs_get_next_inode() returns the error code 
                EXT2_ET_BAD_BLOCK_IN_INODE_TABLE.
        
        * alloc_tables.c (ext2fs_allocate_tables): New function which
                performs the part of mke2fs's job of allocating the 
                filesystem tables.

        * test_io.c (test_close): IO manager which is used for testing
                purposes.

Sun Oct 13 04:31:57 1996  Theodore Ts'o  <tytso@rsts-11.mit.edu>

        * inode.c (ext2fs_get_next_inode): Separate out the function of
                setting up for a new block group to get_next_blockgroup().
                Separate out the function of reading in blocks of the
                inode table to get_next_blocks().

        * ext2fs.h: Add the badblocks list to the ext2_filsys entry

        * badblocks.c (badblocks_list_add, badblocks_list_test): Add
                blocks to the badblock list in sorted order.  This allows
                badblocks_list_test to be coded using a binary search for
                speed.

Tue Oct  8 02:02:03 1996  Theodore Ts'o  <tytso@rsts-11.mit.edu>

        * Release of E2fsprogs version 1.06

Mon Oct  7 00:44:17 1996  Theodore Ts'o  <tytso@rsts-11.mit.edu>

        * ext2fs.h, block.c, closefs.c, dirblock.c, inode.c, native.c,
                open.c: Change EXT2_SWAP to EXT2_FLAG_SWAP for
                consistency's sake.
        
        * closefs.c (ext2fs_flush): If the flag EXT2_MASTER_SB_ONLY is
                set, then only write out the master superblock.

Sun Oct  6 21:45:26 1996  Theodore Ts'o  <tytso@rsts-11.mit.edu>

        * block.c (ext2fs_block_iterate): Fixed bug which caused
                block_iterate to fail to handle HURD created filesystems;
                it tested the inode translator field before the inode was
                loaded.

Tue Sep 17 14:08:24 1996  Theodore Ts'o  <tytso@rsts-11.mit.edu>

        * initialize.c (ext2fs_initialize): Make sure the description for
                the inode bitmap is set correctly.

        * bitmaps.c (ext2fs_allocate_generic_bitmap): Fix minor type typo.

Thu Sep 12 15:23:07 1996  Theodore Ts'o  <tytso@rsts-11.mit.edu>

        * Release of E2fsprogs version 1.05

Sat Sep  7 07:36:03 1996  Theodore Ts'o  <tytso@rsts-11.mit.edu>

        * initialize.c: Override the kernel's idea of default
                checkinterval from 0 (never) to 180 days.

Wed Aug 28 03:20:03 1996  Theodore Ts'o  <tytso@rsts-11.mit.edu>

        * namei.c (ext2fs_namei_follow): New function which follows
                symbolic link (if any) at the target.

Tue Aug 27 01:48:43 1996  Theodore Ts'o  <tytso@rsts-11.mit.edu>

        * inode.c (ext2fs_read_inode, ext2fs_write_inode): Add support
                for shortcut function fs->read_inode() and fs->write_inode().
                Added inode_cache to reduce CPU time spent in doing
                byte swapping.

        * swapfs.c (ext2fs_swap_super): Swap the new fields in a V2
                superblock.

        * namei.c (ext2fs_follow_link): New function.
                (ext2fs_namei): Extended to have support for chasing
                symbolic links.  ext2fs_namei() still returns an inode
                which is a symbolic link.  Symbolic links are only chased
                while resolving the containing directory.  To chase
                symbolic links of the final result, use
                ext2fs_follow_link().

Mon Aug 26 23:46:07 1996  Theodore Ts'o  <tytso@rsts-11.mit.edu>

        * ext2_err.et.in: Added new error code EXT2_ET_SYMLINK_LOOP.

        * bitops.h (ext2fs_set_bit, ext2fs_celar_bit): Use asm inlines
                provided by Pete A. Zaitcev (zaitcev@lab.sun.mcst.ru).

Thu Aug 22 00:40:18 1996  Theodore Ts'o  <tytso@rsts-11.mit.edu>

        * initialize.c (ext2fs_initialize): On systems where the byte
                order is not i386 compatible, set the swap_byte flag.

        * inode.c (inocpy_with_swap): Check to see if inode contains a
                fast symlink before swapping the inode block fields.  This
                required adding a new argument to inocpy_with_swap to
                determine whether the mode field is in host order or not.

Wed Aug 21 00:45:42 1996  Theodore Ts'o  <tytso@rsts-11.mit.edu>

        * bitops.h (ext2fs_set_bit, ext2fs_clear_bit, ext2fs_test_bit): On
                the sparc, if EXT2_STD_BITOPS set, use the standard
                i386-compatible bitmask operations, instead on the
                non-standard native bitmask operators.

Fri Aug  9 11:11:35 1996  Theodore Ts'o  <tytso@rsts-11.mit.edu>

        * block.c (ext2fs_block_iterate): Cause block iterator to return
                the HURD translator block (along with everything else).
                If the flag BLOCK_FLAG_DATA_ONLY is passed to the block
                iterator, then don't return any meta data blocks
                (including the HURD translator).

Wed Jul 17 17:13:34 1996  Theodore Ts'o  <tytso@rsts-11.mit.edu>

        * gen_uuid.c: New file, which generates DCE-compatible UUIDs.

        * uuid.c: New file, containing UUID utility functions.

Tue Jul 16 10:19:16 1996  Theodore Ts'o  <tytso@rsts-11.mit.edu>

        * ext2fs.h: Add a definition of the "real" ext2 superblock.

Fri May 24 14:54:55 1996  Theodore Ts'o  <tytso@rsts-11.mit.edu>

        * ext2fs.h: Fix erroneous ino_t type used in block_bitmap type.

Sun May 19 15:39:03 1996  Theodore Ts'o  <tytso@rsts-11.mit.edu>

        * openfs.c (ext2fs_open): If the blocksize in the superblock is
                zero, return the error EXT2_ET_CORRUPT_SUPERBLOCK, since
                that's a basic value that must be correct for the rest of
                the library to work.

        * ext2_err.et.in (EXT2_ET_CORRUPT_SUPERBLOCK): Added new error
                code.

Thu May 16 11:12:30 1996  Theodore Ts'o  <tytso@rsts-11.mit.edu>

        * Release of E2fsprogs version 1.04

Wed Mar 27 00:33:40 1996    <tytso@rsts-11.mit.edu>

        * Release of E2fsprogs version 1.03

Tue Mar 26 12:06:32 1996    <tytso@rsts-11.mit.edu>

        * bitops.h (ext2fs_set_bit, ext2fs_clear_bit, ext2fs_test_bit):
                Change the m68k bit numbering for bitmasks to match with
                the bit numbering used by all other ext2 implementations.

Thu Mar  7 03:37:00 1996    <tytso@rsts-11.mit.edu>

        * inode.c (ext2fs_get_next_inode, ext2fs_close_inode_scan, 
        ext2fs_open_inode_scan): Support dynamically-sized inodes.

Wed Mar  6 12:26:29 1996    <tytso@rsts-11.mit.edu>

        * inode.c (ext2fs_read_inode, ext2fs_write_inode): Support
                dynamically-sized inodes.

        * openfs.c (ext2fs_open): Allow dynamic revision filesystem to be
                loaded.

Tue Mar  5 03:49:37 1996    <tytso@rsts-11.mit.edu>

        * initialize.c (ext2fs_initialize): Catch an error condition where
                the passed in size is *really* too small.

        * alloc.c (ext2fs_new_inode): 
        * ext2fs.h (EXT2_FIRST_INODE): Add support for dynamic revision to
                get first inode.

Wed Feb 21 15:56:17 1996    <tytso@rsts-11.mit.edu>

        * getsize.c (ext2fs_get_device_size): Open the device read-only
                when trying to determine its size.

Wed Jan 31 11:06:08 1996    <tytso@rsts-11.mit.edu>

        * Release of E2fsprogs version 1.02

Sat Dec  9 09:57:50 1995    <tytso@rsts-11.mit.edu>

        * rw_bitops.c (ext2fs_write_block_bitmap):
        * bitops.c (ext2fs_test_bit, ext2fs_clear_bit, ext2fs_set_bit):
        * bitops.h (ext2fs_test_bit, ext2fs_clear_bit, ext2fs_set_bit):
                Rename {test,set,clear}_bit to ext2fs_{test,set,clear}_bit, 
                to avoid conflicts with with kernel include files.  Also
                rename ADDR and CONST_ADDR to EXT2FS_ADDR and
                EXT2FS_CONST_ADDR. 

Thu Oct 26 12:09:16 1995    <tytso@rsts-11.mit.edu>

        * ext2_err.et: Updated message in EXT2_ET_BASE to say version 0.5c

        * swapfs.c (ext2fs_swap_super): Put an #ifdef check around
                s_def_resuid and s_def_resgid for backwards compatibility.

Fri Oct 20 23:33:31 1995    <tytso@rsts-11.mit.edu>

        * bitops.h: Added #ifdef's for Sparc.

Wed Sep  6 22:14:46 1995    <tytso@rsts-11.mit.edu>

        * getsize.c: #include <sys/ioctl.h> under Linux to pick up ioctl()
                declaration

        * closefs.c: #include <string.h> to pick up memset() declaration

Mon Sep  4 21:45:29 1995  Remy Card  <card@bbj>

        * Makefile.in: Added support for BSD shared libraries.

        * initialize.c (ext2fs_initialize): Correctly set the s_creator_os
                flag.

Mon Sep  4 09:55:30 1995    <tytso@rsts-11.mit.edu>

        * unix_io.c (unix_open): Add a double check; if the passed in name
                is NULL, return EXT2_ET_BAD_DEVICE_NAME.

        * ext2_err.et (EXT2_ET_BAD_DEVICE_NAME): Added new error code

Wed Aug 16 15:44:10 1995    <tytso@rsts-11.mit.edu>

        * inode.c (ext2fs_check_directory): Use LINUX_S_ISDIR instead of
                S_ISDIR.

Tue Aug 15 13:08:36 1995    <tytso@rsts-11.mit.edu>

        * getsize.c (ext2fs_get_device_size): Add support for reading the
                partition size from a BSD disk label.

Thu Aug 10 09:33:26 1995  Theodore Y. Ts'o  <tytso@lurch.mit.edu>

        * getsize.c (ext2fs_get_device_size): New function that determins
                the size of a device.  Used by mke2fs and e2fsck.

Sat Aug 12 03:09:54 1995  Remy Card  <card@bbj>

        * Makefile.in (install): Install static libraries in $(ulibdir)
                (/usr/lib on Linux) instead of $(libdir) (/lib on Linux).

Wed Aug  9 17:04:23 1995  Theodore Y. Ts'o  <tytso@dcl>

        * bitmaps.c (ext2fs_free_inode_bitmap, ext2fs_free_block_bitmap):
                Move these functions to freefs.c.

        * closefs.c (ext2fs_flush): If swapping blocks, clear the group
                descriptors shadow memory to keep purify quiet.  (This
                also has the nice benefit that the unused portion of the
                shadow descriptors are zeroed out.)

        * dirblock.c (ext2fs_write_dir_block): We need to use
                dirent->rec_len *before* it's byteswapped to find the
                location of the next directory structure!

        * alloc.c (ext2fs_new_inode): Fix bug which could potentially
                cause ext2fs_new_inode to loop infinitely if we're trying
                to allocate an inode in group #0 and there are no free
                inodes at all in the system.

        * closefs.c: #include <errno.h> if it exists.

Sun Aug  6 13:27:50 1995  Theodore Y. Ts'o  <tytso@lurch.mit.edu>

        * ext2fs.h (BLOCK_FLAG_HOLE): Added new definition for
                BLOCK_FLAG_APPEND.  Added documentation for the block
                interator flags.

Sat Aug  5 11:44:05 1995  Theodore Y. Ts'o  <tytso@lurch.mit.edu>

        * Makefile.in (DLL_INSTALL_DIR, ELF_INSTALL_DIR): Set the
                installation directories correctly.

Tue Jul 18 09:27:38 1995    <tytso@rsx-11.mit.edu>

        * namei.c (process_dir_block): 
        * mkdir.c (ext2fs_mkdir): 
        * expanddir.c (expand_dir_proc): Use ext2fs_{read,write}_dir_block
                to read/write the directory block.

        * dirblock.c (ext2fs_read_dir_block), ext2fs_write_dir_block): New
                file containing functions for reading and writing
                directory blocks (byte swapping if necesssary)

        * block.c (block_iterate_ind, block_iterate_dind, 
                block_iterate_tind): Byte swap the block addresses if
                EXT2_SWAP_BYTES is set (and swap them back before writing
                them out.)

        * inode.c (inocpy_with_swap): New function.
        (ext2fs_get_next_inode, ext2fs_read_inode, ext2fs_write_inode):
                Call inocpy_with_swap if EXT2_SWAP_BYTES if set.

        * closefs.c (ext2fs_flush): If EXT2_SWAP_BYTES is set, then swap
                the superblock and group descriptors before writing it out.

        * openfs.c (ext2fs_open): If the magic number is byte-swapped,
                then set the EXT2_SWAP_BYTES and byte-swap the superblock
                and group descriptors.

        * swapfs.c (ext2fs_swap_super, ext2fs_swap_group_desc): New functions
                to desp ext2 filesystem structures.

        * bitops.c (set_bit, clear_bit, test_bit): Use modifications
                supplied by Pete A. Zaitcev so that the C language
                versions of these functions are more portable.  They will
                now work on both little and big endian systems, and the
                assumption that 32-bit integers are used is gone.

        * bitops.h (ext2_swab16, ext2_swab32): Added new functions for
                doing byte swapping.

        * ext2fs.h (EXT2_SWAP_BYTES): Add new flag which indicates that
                byte swapping should take place.

Sun Jul 16 06:21:43 1995    <tytso@rsx-11.mit.edu>

        * Makefile.in, cmp_bitmaps.c (ext2fs_compare_block_bitmap_end,
                ext2fs_compare_inode_bitmap_end): Added new file
                containing routines to compare bitmaps.

        * ext2_err.et (EXT2_ET_NEQ_BLOCK_BITMAP, EXT2_ET_NEQ_INODE_BITMAP): 
                Added new error codes.

Sat Jul 15 04:23:37 1995    <tytso@rsx-11.mit.edu>

        * inode.c (ext2fs_get_next_inode): Don't check scan->inode_buffer;
                if the magic number is correct, it will be allocated.

Fri Jul 14 19:02:59 1995    <tytso@rsx-11.mit.edu>

        * block.c (block_iterate_ind, block_iterate_dind, 
                block_iterate_tind): Don't recompute block_nr each loop;
                just increment it!  Factor check of BLOCK_FLAG_APPEND out
                of the loop.  Factor mask of BLOCK_CHANGED into changed
                variable out of the loop.  (block_iterate_ind, in
                particular, gets called a lot, so every little
                optimization helps.)

Thu Jul 13 08:02:45 1995    <tytso@rsx-11.mit.edu>

        * block.c (block_iterate_ind, block_iterate_dind, 
                block_iterate_tind): Precompute limit of loop to speed up
                block_iterate_ind and company.

        * bitops.h (ext2fs_fast_mark_block_bitmap, 
                ext2fs_fast_unmark_block_bitmap, ext2fs_fast_test_block_bitmap,
                ext2fs_fast_mark_inode_bitmap, ext2fs_fast_unmark_inode_bitmap,
                ext2fs_fast_test_inode_bitmap): Add fast version of these
                functions, which don't do range checking.

        * bitops.h (ext2fs_get_block_bitmap_start, 
                ext2fs_get_inode_bitmap_start, ext2fs_get_block_bitmap_end,
                ext2fs_get_inode_bitmap_end): Add new accessor functions
                which return the start and end points of the bitmaps.

Tue Jul 11 18:59:41 1995    <tytso@rsx-11.mit.edu>

        * llseek.c (ext2_llseek): If the offset is small enough, use lseek
                instead of llseek.  The errno if the offset is too large
                and lseek is not supported should be EINVAL, not -EINVAL.

Thu Jun 15 23:43:02 1995  Remy Card  <card@bbj>

        * Makefile.in: Added support for ELF shared libraries.
                Fixed typos in the compilation rules.
                (distclean): Added Makefile.

        * llseek.c (llseek): New function, if llseek() does not exist in the
        C library.
        (ext2_llseek): Changed to call llseek().

Mon Jun 12 08:29:07 1995  Theodore Y. Ts'o  <tytso@lurch.mit.edu>

        * ext2fs.h: Use __u32 to define blk_t, instead of unsigned long.

Sun Jun 11 15:02:54 1995  Theodore Y. Ts'o  <tytso@lurch.mit.edu>

        * mkdir.c (ext2fs_mkdir): Use LINUX_S_IFDIR instead of S_IFDIR.

        * ext2fs.h (LINUX_S_IFDIR): Define a linux specific versions of
                the S_*, which are normally defined in <sys/stat.h>.  This
                allows us to compile e2fsprogs on a non-Linux system,
                which may have a different value for S_IFDIR.

Sat Jun 10 23:47:05 1995  Theodore Y. Ts'o  <tytso@lurch.mit.edu>

        * bitops.c (clear_bit, set_bit): Remove calls to cli() and sti();
                this is a user-mode application!

Thu Jun  8 13:13:22 1995  Miles Bader  <miles@churchy.gnu.ai.mit.edu>

        * llseek.c: Put the include of <linux/unistd.h> inside the #ifdef
        __linux__ so that non-linux systems won't see it.

        * alloc.c: Include <errno.h> if possible.
        * badblocks.c: Ditto.
        * bb_inode.c: Ditto.
        * bitmaps.c: Ditto.
        * block.c: Ditto.
        * expanddir.c: Ditto.
        * get_pathname.c: Ditto.
        * initialize.c: Ditto.
        * inode.c: Ditto.
        * llseek.c: Ditto.
        * mkdir.c: Ditto.
        * namei.c: Ditto.
        * newdir.c: Ditto.
        * openfs.c: Ditto.
        * rw_bitmaps.c: Ditto.
        * unix_io.c: Ditto.

        * Makefile.in: Rewritten to conform to GNU coding standards and
        support separate compilation directories.

Thu May 11 04:13:12 1995    <tytso@rsx-11.mit.edu>

        * initialize.c (ext2fs_initialize): Don't allow more than one
                bitmaps's worth of inodes in a group.

Sat Mar 11 14:07:11 1995  Theodore Y. Ts'o  <tytso@localhost>

        * llseek.c (ext2_llseek): Added error checking to the llseek()
                compat code to protect against overflow.  This only
                applies to 1.0 and early 1.1 kernels, which don't support
                the llseek() system call.

Thu Nov 24 16:29:00 1994  Theodore Y. Ts'o  (tytso@rt-11)

        * unix_io.c (unix_open): Initialize the read_error and write_error
                io_channel pointers to be null.

        * bb_inode.c (clear_bad_block_proc): If an illegal block number is
                found, clear it but don't try to update the filesystem
                accounting information, since that's hopeless anyway.

        * block.c (bloblock_iterate_ind, bloblock_iterate_dind,
        bloblock_iterate_tind): Check to see if the indirect blocks are
                valid before trying to read them.

        * ext2_err.et (EXT2_ET_BAD_IND_BLOCK, EX2_ET_BAD_DIND_BLOCK,
        EXT2_ET_BAD_TIND_BLOCK): Add new error codes.

        * bitops.h (ext2fs_mark_block_bitmap, ext2fs_unmark_block_bitmap,
        ext2fs_test_block_bitmap, ext2fs_mark_inode_bitmap,
        ext2fs_unmark_inode_bitmap, ext2fs_test_inode_bitmap):  If an
                illegal block or inode number is passed in, return instead
                of trying to test, set, or clear the bit.

Mon Nov  7 21:32:33 1994  Remy Card  <card@bbj>

        * Makefile: Added a dummy install target in case shared libraries
                are not built.

Mon Oct 24 14:11:44 1994    (tytso@rsx-11)

        * bitmaps.c (ext2fs_allocate_block_bitmap): Fix calculation of how
                the real last block of the bitmap should be calculated.

Wed Sep  7 10:05:36 1994    (tytso@rsx-11)

        * bitmaps.c (ext2fs_fudge_inode_bitmap_end, 
                ext2fs_fudge_block_bitmap_end, ext2fs_clear_inode_bitmap,
                ext2fs_clear_block_bitmap, ext2fs_free_inode_bitmap,
                ext2fs_free_block_bitmap): Add magic number checking for
                the inode and block bitmaps.

        * bitmaps.c (ext2fs_allocate_block_bitmap): Fix to set the correct
                magic number for a block bitmap instead of an inode bitmap.

        * inode.c (ext2fs_close_inode_scan, ext2fs_get_next_inode):  Add
                magic number checking for the inode_scan structure.

        * badblocks.c (badblocks_list_free, badblocks_list_add, 
                badblocks_list_test, badblocks_list_iterate_begin,
                badblocks_list_iterate, badblocks_list_iterate_end): Add
                magic number checking for the badblocks_list and
                badblocks_iterate structures.

        * ext2_err.et (EXT2_ET_MAGIC_UNIX_IO_CHANNEL): 
        * unix_io.c (unix_open, unix_close, unix_set_blksize, unix_read_blk,
                unix_write_blk, unix_flush): Add magic number checking
                both for io_channel structure and unix_private_data
                structure.

        * openfs.c (ext2fs_open): Add check for io_manager structure's
                magic number.

        * rw_bitmaps.c (ext2fs_write_inode_bitmap, ext2fs_write_block_bitmap,
                ext2fs_read_inode_bitmap, ext2fs_read_block_bitmap,
                ext2fs_read_bitmaps, ext2fs_write_bitmaps): 
        * read_bb.c (ext2fs_read_bb_inode): 
        * read_bb_file.c (ext2fs_read_bb_FILE): 
        * newdir.c (ext2fs_new_dir_block): 
        * namei.c (ext2fs_dir_iterate, ext2fs_lookup, ext2fs_namei): 
        * link.c (ext2fs_link, ext2fs_unlink): 
        * inode.c (ext2fs_open_inode_scan, ext2fs_read_inode,
                ext2fs_write_inode, ext2fs_get_blocks, 
                ext2fs_check_directory): 
        * get_pathname.c (ext2fs_get_pathname): 
        * expanddir.c (ext2fs_expand_dir): 
        * block.c (ext2fs_block_iterate): 
        * bitmaps.c (ext2fs_allocate_inode_bitmap, 
                ext2fs_allocate_block_bitmap): 
        * bb_inode.c (ext2fs_update_bb_inode): 
        * alloc.c (ext2fs_new_inode,ext2fs_new_block,ext2fs_get_free_blocks): 
        * check_desc.c (ext2fs_check_desc): 
        * closefs.c (ext2fs_close, ext2fs_flush): 
        * freefs.c (ext2fs_free): Add check for ext2_filsys magic number.

        * Makefile:
        * ext2fs.h:
        * openfs.c:
        * check_desc.c (ext2fs_check_desc): Move ext2fs_check_desc from
        openfs.c into its own file.

        * ext2fs.h (EXT2_CHECK_MAGIC): Added macro for checking for
        structure magic numbers.

        * closefs.c (ext2fs_flush): Folded in Remy Card's changes to clear
        the EXT2_VALID_FS flag in the backup superblock blocks, so that if
        someone uses the -b option to specify the use of the backup
        superblock --- this usually means that the main superblock is
        toast.  :-)

        * ext2fs.h: 
        * ext2_err.et (EXT2_ET_REV_TOO_HIGH): 
        * openfs.c (ext2fs_open): Folded in Remy Card's changes to add a
        revision level to the superblock.

Sun Aug 21 00:50:08 1994  Theodore Y. Ts'o  (tytso@rt-11)

        * ext2fs.h:
        * bitmaps.c:
        * bitops.c
        * bitops.h:
        * openfs.c:
        * initialize.c: Completely revamped the inode and block bitmap
        structures, so that they can be better chance of being extensible
        in a shared library.  They are now their own type, instead of
        being a char *.  Also, the function signatures of
        ext2fs_test_block_bitmap, ext2fs_mark_block_bitmap,
        ext2fs_unmark_block_bitmap, ext2fs_test_inode_bitmap,
        ext2fs_mark_inode_bitmap, and ext2fs_unmark_inode_bitmap were
        changed to eliminate the ext2_filsys argument, since it is no
        longer necessary.

Wed Aug 17 21:46:44 1994  Remy Card  (card@bbj)

        * unix_io.c (unix_read_blk and unix_write_blk): use the llseek
        system call if available.

        * llseek.c: new file.  This is the stub calling the llseek system
        call which allows supports for 2GB+ file systems.

        * initialize.c (ext2fs_initialize): Ext2fs_initialize now stores
        the creator operating system.

Wed Aug 17 10:03:24 1994  Theodore Y. Ts'o  (tytso@rt-11)

        * initialize.c (ext2fs_initialize): Ext2fs_initialize now sets up
        the group descriptor statistics in addition to everything else.
        This relieves mke2fs of the responsibility of doing it.

        * bitops.c, bitops.h: Add assembly inline functions for the 68000.
        Added a new #define, _EXT2_HAVE_ASM_BITOPS_ to control whether or
        not the generic C function equivalents should be included or not.

        * openfs.c (ext2fs_open): If a superblock is specified, then use
        the backup group descriptors that go along with this superblock,
        instead of using the primary group descriptors.  This allows
        e2fsck to recover filesystems where the primary group descriptors
        have been trashed.