Most places respect this define, but this one doesn't.
Reported-by: Dmitri Bogomolov <4glitch@gmail.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
The MMP tests need to be run on a real disk instead of tmpfs, since
the MMP block access is using O_DIRECT. As such, they create their
own test files in the local testing directory instead of using the
temporary file created in /tmp by the test_one script. Delete the
tempfs file before clobbering TMPFILE, otherwise it will leave the
unused file in /tmp after the test is completed.
Signed-off-by: Andreas Dilger <adilger@dilger.ca>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
[ Also teach libe2p's print_flags() function to display this flag so
that lsattr will allow us to see whether a file has inline data or not.
--tytso ]
Signed-off-by: Zheng Liu <wenqing.lz@taobao.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
This is what the patches from Zhen Liu uses, so let's make this change
now to keep things easier. INCOMPAT_INLINE_DATA also looks better
IMHO. :-)
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Handle EXT4_FEATURE_RO_COMPAT_QUOTA the same way we handle INCOMPAT
features, so we don't have to have two definitions for
EXT2_LIB_FEATURE_RO_COMPAT_SUPP depending on whether or not
CONFIG_QUOTA is enabled or not.
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Commit 07307114de didn't correctly handle the lost+found directory
when it added support for metadata checksums. First of all,
e2fsck_get_lost_and_found() assumed that the inode_dir_map bitmap was
initialized, and it wasn't when it was called earlier by a change in
that commit. Secondly, it's important that lost+found dirctory is
processed in case its directory checksums are incorrect, but should
preserve any empty dirctory blocks so there space available for e2fsck
to reconnect any orphan inodes.
Fix these problems, to fix test failures: f_holedir2 and f_rehash_dir
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
[ Also teach libe2p's print_flags() function to display this flag so
that lsattr will allow us to see whether a file has inline data or not.
--tytso ]
Signed-off-by: Zheng Liu <wenqing.lz@taobao.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
This is what the patches from Zhen Liu uses, so let's make this change
now to keep things easier. INCOMPAT_INLINE_DATA also looks better
IMHO. :-)
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Handle EXT4_FEATURE_RO_COMPAT_QUOTA the same way we handle INCOMPAT
features, so we don't have to have two definitions for
EXT2_LIB_FEATURE_RO_COMPAT_SUPP depending on whether or not
CONFIG_QUOTA is enabled or not.
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
When passed a negative count (indicating a byte count rather than
a block count) e2fsck_handle_read_error() treats the data as a full
block, causing unix_write_blk64() (which can handle negative counts
just fine) to try to write too much. Given a faulty block device,
this resulted in a SEGV when unix_write_blk64() read past the bottom
of the stack copying the data to cache. (check_backup_super_block ->
unix_read_blk64 -> raw_read_blk -> e2fsck_handle_read_error)
Reported-by: Alex Friedman <alexfr@il.ibm.com>
Signed-off-by: Jim Keniston <jkenisto@us.ibm.com>
Signed-off-by: Dan Streetman <ddstreet@us.ibm.com>
Reviewed-by: Mingming Cao <mcao@us.ibm.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Commit a7c17431b9 attempted to fix a problem where the system
libraries might get used instead of local libraries for things like
-lcom_err. It tried to accomplish this by moving $(ELF_OTHER_LIBS) to
before $(LDFLAGS).
Unfortunately, this was the wrong fix; $(ELF_OTHER_LIBS) *MUST* be
after the object files, or the linker might not pull in the necessary
library and not include it into the DT_NEEDED section of the shared
library. The proper fix is to add a -L$(LIB) before $(LDFLAGS), and
then remove the -L option from all of the ELF_OTHER_LIBS definitions
in the library Makefiles.
Addresses-Sourceforge-Bug: #3554345
Cc: Olivier Blin <olivier.blin@softathome.com>
Reported-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
When the kernel writes an inode where all of the other inodes in in
the inode table (itable) block are unused, it skips reading the itable
block from disk, and instead uses an all zeros block. This can cause
e2fsck to complain when it iterates over the inodes using
ext2fs_get_next_inode() since the inode apparently has an invalid
checksum. Normally the inode won't be returned at all if it is at the
end of the block group's part of the inode table, thanks to the
bg_itable_unused field. But it's possible for this situation to
happen earlier in the inode table block.
Fix this by changing ext2fs_inode_csum_verify() to allow the inode to
be all zero's; if the checksum fails, and the inode is all zero's,
treat it as a valid checksum.
Reported-by: Tao Ma <boyu.tm@taobao.com>
Reported-by: Zheng Liu <wenqing.lz@taobao.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Enable full-power metadata checksumming by default on 'ext4dev'
filesystems. This should be fairly safe for now, since only
developers should be using this new feature.
Signed-off-by: Darrick J. Wong <djwong@us.ibm.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Remove crc32_be in favor of the implementation in libext2fs.
Signed-off-by: Darrick J. Wong <djwong@us.ibm.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
The crc32c implementation in the kernel has been refactored a bit to
reduce the amount of code that needs to be maintained, and to speed up
tune2fs/e2fsck on PowerPC by 5-10%. Port the crc32c changes over, and
provide a crc32_be so that we can remove the duplicate functionality
from e2fsck. Also drop crc32c_be and crc32_le since neither got used.
Signed-off-by: Darrick J. Wong <djwong@us.ibm.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Add metadata checksumming to the list of supported features.
Signed-off-by: Darrick J. Wong <djwong@us.ibm.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Check the data block checksums when recovering the journal.
Signed-off-by: Darrick J. Wong <djwong@us.ibm.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
When recovering a journal with checksum v2, verify the commit block
checksum.
Signed-off-by: Darrick J. Wong <djwong@us.ibm.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Verify the descriptor block checksum when recovering a journal.
Signed-off-by: Darrick J. Wong <djwong@us.ibm.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Verify the revoke block checksum when recovering the journal.
Signed-off-by: Darrick J. Wong <djwong@us.ibm.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Ensure that the journal superblock passes checksum before recovering the
filesystem.
Signed-off-by: Darrick J. Wong <djwong@us.ibm.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Modify the dump code to print information about jbd2 v2 checksum data.
Signed-off-by: Darrick J. Wong <djwong@us.ibm.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Define flags and change journal structure definitions to support v2 journal
checksumming.
Signed-off-by: Darrick J. Wong <djwong@us.ibm.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
When changing the metadata_csum flag, always force out a new MMP block.
Signed-off-by: Darrick J. Wong <djwong@us.ibm.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Check and handle MMP checksum problems by resetting the block.
Signed-off-by: Darrick J. Wong <djwong@us.ibm.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
The metadata_csum feature works best when two features are enabled.
These features are "extents" (because the block map has no space for
checksums) and "64bit" (this enables storage of full 32-bit checksums
in certain fields). Print a warning if the user tries to create a
filesystem without those features.
Signed-off-by: Darrick J. Wong <djwong@us.ibm.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Update mke2fs to use the helper function to determine if group
descriptors should have checksums calculated. Since metadata_csum
supersedes uninit_bg, quietly drop uninit_bg if metadata_csum is set,
so that older kernels don't get confused.
Signed-off-by: Darrick J. Wong <djwong@us.ibm.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
When toggling the metadata_csum and uninit_bg feature flags, we should
rewrite the block groups with the desired checksum.
Signed-off-by: Darrick J. Wong <djwong@us.ibm.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Use the helper function to determine if group descriptors have a
checksum. Ensure that metadata_csum and uninit_bg flags are not set
simultaneously, as part of pass 0.
Signed-off-by: Darrick J. Wong <djwong@us.ibm.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Change the block group algorithm to use the same algorithm as the rest
of the metadata_csum. This mostly involves providing a helper
function to tell if group descriptors should have checksums set or
verified, and modifying the gdt checksum code to use the correct
algorithm.
Signed-off-by: Darrick J. Wong <djwong@us.ibm.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Record the type of checksum algorithm we're using for metadata in the
superblock when creating a filesystem.
Signed-off-by: Darrick J. Wong <djwong@us.ibm.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Actually records the checksum algorithm type in the superblock when
enabling checksumming.
Signed-off-by: Darrick J. Wong <djwong@us.ibm.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Record the type of checksum algorithm we're using for metadata in the
superblock, in case we ever want/need to change the algorithm.
Signed-off-by: Darrick J. Wong <djwong@us.ibm.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
If e2fsck finds a superblock with an invalid checksum, try the
backups.
Signed-off-by: Darrick J. Wong <djwong@us.ibm.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Calculate and verify the superblock checksums. Each copy of the
superblock records the number of the group it's in and the FS UUID, so
we can simply checksum the whole block.
Signed-off-by: Darrick J. Wong <djwong@us.ibm.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
When enabling metadata checksums, rewrite separate extended attribute
blocks.
Signed-off-by: Darrick J. Wong <djwong@us.ibm.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Verify the checksums of separate extended attribute blocks and offer
to clear it if there is a mismatch.
Signed-off-by: Darrick J. Wong <djwong@us.ibm.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Calculate and verify the checksum for separate (i.e. not in the inode)
extended attribute blocks; the checksum lives in the header.
[ Merged in change from Tao so that we always use the fs checksum seed
for the xattr blocks. ]
Signed-off-by: Darrick J. Wong <djwong@us.ibm.com>
Signed-off-by: Tao Ma <boyu.mt@taobao.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Since all the metadata checksums depend on the fs UUID, tune2fs must
be able to rewrite the checksums of _all_ metadata. It's not that
hard to add in the bits to resize the directory block structures at
the same time.
[ Merged in fix from Zheng Liu where ctx.errcode wasn't getting
cleared in rewrite_directory(). ]
Signed-off-by: Darrick J. Wong <djwong@us.ibm.com>
Signed-off-by: Zheng Liu <wenqing.lz@taobao.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Checks that directory leaf blocks have the necessary fake dir_entry at
the end of the block to hold a checksum and that the checksum is
valid. It will resize the block and/or rebuild the directory if
necessary.
Signed-off-by: Darrick J. Wong <djwong@us.ibm.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Introduce small structures for recording directory tree checksums, and
some API changes to support writing out directory blocks with
checksums.
Signed-off-by: Darrick J. Wong <djwong@us.ibm.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Check htree internal node checksums. If broken, ask user to clear
the htree index and recreate it later.
[ Move the check for not rehashing the lost+found directory to pass1
so that we don't end up truncating lost+found when the metadata
checksum feature is enabled. -- TYT ]
Signed-off-by: Darrick J. Wong <djwong@us.ibm.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Verify and calculate checksums of htree internal node blocks.
Signed-off-by: Darrick J. Wong <djwong@us.ibm.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Print htree node checksums when dumping a directory index.
Signed-off-by: Darrick J. Wong <djwong@us.ibm.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Theodore Ts'o