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11 years agoMerge branch 'maint' into next
Theodore Ts'o [Fri, 21 Sep 2012 16:55:45 +0000 (12:55 -0400)]
Merge branch 'maint' into next

Conflicts:
debian/changelog
version.h

11 years agoUpdate Release Notes, Changelogs, version.h, etc. for 1.42.6 release
Theodore Ts'o [Fri, 21 Sep 2012 16:53:14 +0000 (12:53 -0400)]
Update Release Notes, Changelogs, version.h, etc. for 1.42.6 release

11 years agoFix wordwrap.pl so it is more portable
Theodore Ts'o [Fri, 21 Sep 2012 16:31:13 +0000 (12:31 -0400)]
Fix wordwrap.pl so it is more portable

Needed so that wordwrap.pl works with perl 5.14.2

Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
11 years agomke2fs: throttle allocating groups progress as well
Theodore Ts'o [Fri, 21 Sep 2012 16:06:49 +0000 (12:06 -0400)]
mke2fs: throttle allocating groups progress as well

Throttle updates for the "Allocating Groups" progress updates to once
a second as well.  We now do this throttling in libext2fs, so we don't
have to do this for each of mke2fs's progress updates, and because the
updates from ext2fs_allocate_tables() come from within libext2fs
anyway.

Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
11 years agomke2fs.8: use extents vs extent in the man page
Theodore Ts'o [Fri, 21 Sep 2012 01:59:13 +0000 (21:59 -0400)]
mke2fs.8: use extents vs extent in the man page

We print "extents" for the feature, so we should document "extents" in
the mke2fs's man page, even though we accept both "extent" and
"extents".

Addresses-Sourceforge-Bug: #3559210

Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
11 years agodebian: adjust build dependencies
Theodore Ts'o [Fri, 21 Sep 2012 00:48:34 +0000 (20:48 -0400)]
debian: adjust build dependencies

Remove dc from the list of dependencies, since it's not used during
the build anymore.

Addresses-Debian-Bug: #677497

Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
11 years agoMerge branch 'maint' into next
Theodore Ts'o [Mon, 17 Sep 2012 02:06:29 +0000 (22:06 -0400)]
Merge branch 'maint' into next

Conflicts:
resize/resize2fs.c

11 years agotests: kill debugfs on interrupted MMP test
Andreas Dilger [Mon, 10 Sep 2012 09:04:47 +0000 (09:04 +0000)]
tests: kill debugfs on interrupted MMP test

If the f_mmp test is interrupted during its test run, then it can
leave debugfs busy-looping in the background.  Since f_mmp is a
relatively long-running test, and is likely to be running during
a parallel test run, this can happen fairly often.

Set a signal trap for the f_mmp test script being killed, so that
the background debugfs command will always be killed by the test.

Signed-off-by: Andreas Dilger <adilger@dilger.ca>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
11 years agomke2fs: disable progress reporting in mke2fs.conf for regression tests
Theodore Ts'o [Mon, 17 Sep 2012 00:43:07 +0000 (20:43 -0400)]
mke2fs: disable progress reporting in mke2fs.conf for regression tests

Add a configuration knob so the regression tests can disable progress
reporting.  This fixes a potential lack of predictability since the
progress reports are now time based (once a second) which is
problematic for regression tests which are comparing the expected
output of mke2fs.

Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
11 years agomke2fs: throttle progress updates to once a second
Theodore Ts'o [Fri, 14 Sep 2012 04:11:07 +0000 (00:11 -0400)]
mke2fs: throttle progress updates to once a second

With lazy itable initialization, the progress updates for writing the
inode table happens so quickly that on a serial console, the time to
write the progress updates can be the bottleneck.  Fix this by only
updating the progress indicator once a second.

Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
11 years agoresize2fs: grow uninit_bg file systems more efficiently
Theodore Ts'o [Thu, 13 Sep 2012 22:17:27 +0000 (18:17 -0400)]
resize2fs: grow uninit_bg file systems more efficiently

If the uninit_bg feature is enabled and the kernel supports
lazy_itable_init, skip zeroing the inode table so that the resize
operation can go much more quickly.  Also set the itable_unused fields
so that the first e2fsck after the resize will run faster.

Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
11 years agoresize2fs: enforce restrictions if the kernel doesn't do meta_bg resizing
Theodore Ts'o [Thu, 13 Sep 2012 20:56:36 +0000 (16:56 -0400)]
resize2fs: enforce restrictions if the kernel doesn't do meta_bg resizing

Enhance the online resizing code to be more nuanced about resizing
restrictions.  If the kernel supports meta_bg resizing, then we can
skip all of the restrictions.  If the kernel does not support meta_bg
resizing, check more carefully to make sure there are enough reserved
gdt blocks, so that the user gets a clearer error message.

Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
11 years agoresize2fs: allow meta_bg/64-bit file systems to be online resized
Theodore Ts'o [Fri, 31 Aug 2012 19:31:50 +0000 (15:31 -0400)]
resize2fs: allow meta_bg/64-bit file systems to be online resized

Resize2fs can't handle resizing flex_bg file systems that do not have
the resize inode, but when the kernel adds support for resizing using
the meta_bg layout, we should allow it be able to resize the file
system.

So move the flex_bg/resize_inode check to the just before we start
doing the off-line resize, instead of doing it earlier where it would
prohibit these file systems for both on-line and off-line resizes.

Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
11 years agoresize2fs: fix overhead calculation for meta_bg file systems
Theodore Ts'o [Mon, 3 Sep 2012 16:40:54 +0000 (12:40 -0400)]
resize2fs: fix overhead calculation for meta_bg file systems

The file system overhead calculation in calculate_minimum_resize_size
was incorrect meta_bg file systems.  This caused the minimum size to
underflow for very large file systems, which threw resize2fs into a
loop generally lasted longer than the user's patience.

Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
11 years agoresize2fs: enforce the 16TB limit on 32-bit file systems correctly
Theodore Ts'o [Fri, 7 Sep 2012 04:05:21 +0000 (00:05 -0400)]
resize2fs: enforce the 16TB limit on 32-bit file systems correctly

The 16TB limit must be enforced regardless of whether the new size is
specified on the command line or implied by the size of the device,
but only if the file system does not support 64-bit block sizes, or
the kernel does not advertise support of meta_bg resizing.

Previously we were unconditionally enforcing it when it was implied by
the device size, but not if the new size was specified on the command
line.

Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
11 years agoMerge branch 'maint' into next
Theodore Ts'o [Mon, 10 Sep 2012 02:52:26 +0000 (22:52 -0400)]
Merge branch 'maint' into next

Conflicts:
lib/ext2fs/ext2fs.h

11 years agoext2fs.h: move ext2fs_init_csum_seed() outside of EXT2_CUSTOM_MEMORY_ROUTINES
Theodore Ts'o [Mon, 10 Sep 2012 01:43:08 +0000 (21:43 -0400)]
ext2fs.h: move ext2fs_init_csum_seed() outside of EXT2_CUSTOM_MEMORY_ROUTINES

The function ext2fs_init_csum_seed() has nothing to do with the
ext2fs_get_mem()/ext2fs_get_memzero()/ext2fs_get_array()/ext2fs_get_arrayzero()
functions.  (This define is there so that on platforms where we need
to use the standard C functions, they can be replaced --- this is
primarily needed when trying to compile libext2fs for strange,
non-quite-standards-compliant platforms, such as Windows.)

Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
11 years agoAllow e2fsprogs to be built using the clang (LLVM) frontend
Theodore Ts'o [Mon, 10 Sep 2012 01:35:39 +0000 (21:35 -0400)]
Allow e2fsprogs to be built using the clang (LLVM) frontend

Since clang uses C99 semantics by default, the main changes required
to allow clang to build e2fsprogs was to add support the C99 inline
semantics, while still allowing us to be built when the legacy (but
still default for gcc) GNU C89 inline semantics are in force.

Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
11 years agomke2fs: recalculate the reserved blocks when the last BG is dropped
Akira Fujita [Thu, 30 Aug 2012 11:16:01 +0000 (20:16 +0900)]
mke2fs: recalculate the reserved blocks when the last BG is dropped

mke2fs -m option can set reserved blocks ratio up to 50%.  But if the
last block group is not big enough to support the necessary data
structures, it gets dropped, we have to recalculate the number of
reserved blocks so that the reserved blocks matches the requested
percentage.

It also avoids a problem where if the user specifies a reserved blocks
of 50%, and after the last partial block group was dropped, if the
number of reserved blocks is greater than 50%, e2fsck will complain.

Steps to reproduce:

1. Create a FS which has the overhead for the last BG
   and specify 50 % for reserved blocks ratio
 # mke2fs -m 50 -t ext4 DEV 1025M

 mke2fs 1.42.5 (29-Jul-2012)
 warning: 256 blocks unused.

 Filesystem label=
 OS type: Linux
 Block size=4096 (log=2)
 Fragment size=4096 (log=2)
 Stride=0 blocks, Stripe width=0 blocks
 656640 inodes, 2621440 blocks
 1310848 blocks (50.00%) reserved for the super user
 ~~~~~~~ <-- Reserved blocks exceed 50% of FS blocks count!

2. e2fsck outputs filesystem corruption
 # e2fsck DEV

 e2fsck 1.42.5 (29-Jul-2012)
 Corruption found in superblock.  (r_blocks_count = 1310848).

 The superblock could not be read or does not describe a correct ext2
 filesystem.  If the device is valid and it really contains an ext2
 filesystem (and not swap or ufs or something else), then the superblock
 is corrupt, and you might try running e2fsck with an alternate superblock:
     e2fsck -b 32768 <device>

Signed-off-by: Akira Fujita <a-fujita@rs.jp.ne.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
11 years agoconfigure: fix --enable-relative-symlink
Theodore Ts'o [Fri, 7 Sep 2012 03:01:14 +0000 (23:01 -0400)]
configure: fix --enable-relative-symlink

The configure option --enable-relative-symlinks was incorrectly
specified in configure.in, as --enable-symlink-relative-symlinks.  Fix
the configure script so that --enable-relative-symlinks works, as well
as previous incorrect command line option.  We will keep the older,
incorrect --enable-symlink-relative-symlinks for at least two years
before removing it.

Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
11 years agoMerge branch 'next'
Theodore Ts'o [Mon, 3 Sep 2012 03:32:14 +0000 (23:32 -0400)]
Merge branch 'next'

11 years agoMerge branch 'maint' into next
Theodore Ts'o [Sun, 19 Aug 2012 22:11:46 +0000 (18:11 -0400)]
Merge branch 'maint' into next

11 years agoutil: respect HAVE_MALLOC_H
Mike Frysinger [Sat, 18 Aug 2012 12:17:41 +0000 (12:17 +0000)]
util: respect HAVE_MALLOC_H

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>
11 years agoe2fsprogs: fix spelling of 'filesystme' in debugfs help
Bryce Harrington [Sat, 18 Aug 2012 00:10:46 +0000 (17:10 -0700)]
e2fsprogs: fix spelling of 'filesystme' in debugfs help

Signed-off-by: Bryce Harrington <bryce@canonical.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
11 years agotests: remove unused temporary files for MMP tests
Andreas Dilger [Tue, 14 Aug 2012 15:33:24 +0000 (11:33 -0400)]
tests: remove unused temporary files for MMP tests

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>
11 years agolibe2p/libext2fs: add EXT4_INLINE_DATA_FL flag
Zheng Liu [Tue, 7 Aug 2012 17:56:47 +0000 (13:56 -0400)]
libe2p/libext2fs: add EXT4_INLINE_DATA_FL flag

[ 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>
11 years agolibext2fs: rename INCOMPAT_INLINEDATA to INCOMPAT_INLINE_DATA
Theodore Ts'o [Tue, 7 Aug 2012 17:53:22 +0000 (13:53 -0400)]
libext2fs: rename INCOMPAT_INLINEDATA to INCOMPAT_INLINE_DATA

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>
11 years agolibext2fs: refactor the quota feature flag in the supported flags mask
Theodore Ts'o [Tue, 7 Aug 2012 17:46:13 +0000 (13:46 -0400)]
libext2fs: refactor the quota feature flag in the supported flags mask

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>
11 years agoMerge branch 'maint' into next
Theodore Ts'o [Wed, 15 Aug 2012 20:43:55 +0000 (16:43 -0400)]
Merge branch 'maint' into next

11 years agoext4: fix rehashing of the lost+found directory
Theodore Ts'o [Wed, 15 Aug 2012 17:00:14 +0000 (13:00 -0400)]
ext4: fix rehashing of the lost+found directory

Commit 07307114dea 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>
11 years agolibe2p/libext2fs: add EXT4_INLINE_DATA_FL flag
Zheng Liu [Tue, 7 Aug 2012 17:56:47 +0000 (13:56 -0400)]
libe2p/libext2fs: add EXT4_INLINE_DATA_FL flag

[ 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>
11 years agolibext2fs: rename INCOMPAT_INLINEDATA to INCOMPAT_INLINE_DATA
Theodore Ts'o [Tue, 7 Aug 2012 17:53:22 +0000 (13:53 -0400)]
libext2fs: rename INCOMPAT_INLINEDATA to INCOMPAT_INLINE_DATA

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>
11 years agolibext2fs: refactor the quota feature flag in the supported flags mask
Theodore Ts'o [Tue, 7 Aug 2012 17:46:13 +0000 (13:46 -0400)]
libext2fs: refactor the quota feature flag in the supported flags mask

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>
11 years agoMerge branch 'maint' into next
Theodore Ts'o [Tue, 7 Aug 2012 01:09:49 +0000 (21:09 -0400)]
Merge branch 'maint' into next

11 years agoe2fsck: fix potential segv when handling a read error in a superblock
Jim Keniston [Mon, 6 Aug 2012 22:46:03 +0000 (18:46 -0400)]
e2fsck: fix potential segv when handling a read error in a superblock

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>
11 years agoPut ELF_OTHER_LIBS in the right place for the linker
Theodore Ts'o [Sat, 4 Aug 2012 20:56:55 +0000 (16:56 -0400)]
Put ELF_OTHER_LIBS in the right place for the linker

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>
11 years agodebian: Apply debian packaging fixes for metadata csum
Theodore Ts'o [Fri, 3 Aug 2012 02:06:16 +0000 (22:06 -0400)]
debian: Apply debian packaging fixes for metadata csum

Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
11 years agolibext2fs: when checking the inode's checksum, allow an all-zero inode
Theodore Ts'o [Fri, 3 Aug 2012 00:47:46 +0000 (20:47 -0400)]
libext2fs: when checking the inode's checksum, allow an all-zero inode

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>
11 years agomke2fs: enable metadata_csum on ext4dev filesystems
Darrick J. Wong [Fri, 3 Aug 2012 00:47:46 +0000 (20:47 -0400)]
mke2fs: enable metadata_csum on ext4dev filesystems

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>
11 years agoe2fsck: refactor crc32_be code
Darrick J. Wong [Fri, 3 Aug 2012 00:47:46 +0000 (20:47 -0400)]
e2fsck: refactor crc32_be code

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>
11 years agolibext2fs: optimize the CRC32c implementation
Darrick J. Wong [Fri, 3 Aug 2012 00:47:46 +0000 (20:47 -0400)]
libext2fs: optimize the CRC32c implementation

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>
11 years agolibext2fs: enable support for the metadata checksumming feature
Darrick J. Wong [Fri, 3 Aug 2012 00:47:46 +0000 (20:47 -0400)]
libext2fs: enable support for the metadata checksumming feature

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>
11 years agoe2fsck: verify data block checksums when recovering journal
Darrick J. Wong [Fri, 3 Aug 2012 00:47:46 +0000 (20:47 -0400)]
e2fsck: verify data block checksums when recovering journal

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>
11 years agoe2fsck: check commit block checksum during recovery
Darrick J. Wong [Fri, 3 Aug 2012 00:47:46 +0000 (20:47 -0400)]
e2fsck: check commit block checksum during recovery

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>
11 years agoe2fsck: check descriptor block checksum when recovering journal
Darrick J. Wong [Fri, 3 Aug 2012 00:47:46 +0000 (20:47 -0400)]
e2fsck: check descriptor block checksum when recovering journal

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>
11 years agoe2fsck: check revoke block checksum during recovery
Darrick J. Wong [Fri, 3 Aug 2012 00:47:45 +0000 (20:47 -0400)]
e2fsck: check revoke block checksum during recovery

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>
11 years agoe2fsck: check journal superblock checksum prior to recovery
Darrick J. Wong [Fri, 3 Aug 2012 00:47:45 +0000 (20:47 -0400)]
e2fsck: check journal superblock checksum prior to recovery

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>
11 years agolibext2fs: dump feature flags for jbd2 v2 checksums
Darrick J. Wong [Fri, 3 Aug 2012 00:47:45 +0000 (20:47 -0400)]
libext2fs: dump feature flags for jbd2 v2 checksums

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>
11 years agolibext2fs: change on-disk journal layout to support metadata checksumming
Darrick J. Wong [Fri, 3 Aug 2012 00:47:45 +0000 (20:47 -0400)]
libext2fs: change on-disk journal layout to support metadata checksumming

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>
11 years agotune2fs: force MMP update when changing metadata_csum flag
Darrick J. Wong [Fri, 3 Aug 2012 00:47:45 +0000 (20:47 -0400)]
tune2fs: force MMP update when changing metadata_csum flag

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>
11 years agoe2fsck: verify and correct MMP checksum problems
Darrick J. Wong [Fri, 3 Aug 2012 00:47:45 +0000 (20:47 -0400)]
e2fsck: verify and correct MMP checksum problems

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>
11 years agolibext2fs: add checksum to MMP block
Darrick J. Wong [Fri, 3 Aug 2012 00:47:45 +0000 (20:47 -0400)]
libext2fs: add checksum to MMP block

Calculate and verify a checksum of the MMP block.

Signed-off-by: Darrick J. Wong <djwong@us.ibm.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
11 years agomke2fs: warn if not enabling all the features that metadata_csum wants
Darrick J. Wong [Fri, 3 Aug 2012 00:47:45 +0000 (20:47 -0400)]
mke2fs: warn if not enabling all the features that metadata_csum wants

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>
11 years agomke2fs: write new group descriptors with the appropriate checksum
Darrick J. Wong [Fri, 3 Aug 2012 00:47:45 +0000 (20:47 -0400)]
mke2fs: write new group descriptors with the appropriate checksum

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>
11 years agotune2fs: rewrite block group checksums when changing checksumming feature flags
Darrick J. Wong [Fri, 3 Aug 2012 00:47:45 +0000 (20:47 -0400)]
tune2fs: rewrite block group checksums when changing checksumming feature flags

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>
11 years agoe2fsck: ensure block group checksum uses
Darrick J. Wong [Fri, 3 Aug 2012 00:47:45 +0000 (20:47 -0400)]
e2fsck: ensure block group checksum uses

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>
11 years agolibext2fs: block group checksum should use metadata_csum algorithm
Darrick J. Wong [Fri, 3 Aug 2012 00:47:45 +0000 (20:47 -0400)]
libext2fs: block group checksum should use metadata_csum algorithm

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>
11 years agomke2fs: record the checksum algorithm in use in the superblock
Darrick J. Wong [Fri, 3 Aug 2012 00:47:45 +0000 (20:47 -0400)]
mke2fs: record the checksum algorithm in use in the superblock

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>
11 years agotune2fs: store checksum algorithm type in superblock
Darrick J. Wong [Fri, 3 Aug 2012 00:47:44 +0000 (20:47 -0400)]
tune2fs: store checksum algorithm type in superblock

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>
11 years agolibext2fs: record the checksum algorithm in use in the superblock
Darrick J. Wong [Fri, 3 Aug 2012 00:47:44 +0000 (20:47 -0400)]
libext2fs: record the checksum algorithm in use in the superblock

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>
11 years agoe2fsck: handle superblock checksum errors gracefully
Darrick J. Wong [Fri, 3 Aug 2012 00:47:44 +0000 (20:47 -0400)]
e2fsck: handle superblock checksum errors gracefully

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>
11 years agolibext2fs: calculate and verify superblock checksums
Darrick J. Wong [Fri, 3 Aug 2012 00:47:44 +0000 (20:47 -0400)]
libext2fs: calculate and verify superblock checksums

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>
11 years agotune2fs: rewrite extended attribute block checksums
Darrick J. Wong [Fri, 3 Aug 2012 00:47:44 +0000 (20:47 -0400)]
tune2fs: rewrite extended attribute block checksums

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>
11 years agoe2fsck: check extended attribute block checksums
Darrick J. Wong [Fri, 3 Aug 2012 00:47:44 +0000 (20:47 -0400)]
e2fsck: check extended attribute block checksums

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>
11 years agolibext2fs: verify and calculate extended attribute block checksums
Darrick J. Wong [Fri, 3 Aug 2012 00:47:44 +0000 (20:47 -0400)]
libext2fs: verify and calculate extended attribute block checksums

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>
11 years agotune2fs: rebuild and checksum directories when necessary
Darrick J. Wong [Fri, 3 Aug 2012 00:47:35 +0000 (20:47 -0400)]
tune2fs: rebuild and checksum directories when necessary

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>
11 years agoe2fsck: check directory leaf block checksums
Darrick J. Wong [Thu, 2 Aug 2012 21:27:43 +0000 (17:27 -0400)]
e2fsck: check directory leaf block checksums

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>
11 years agolibext2fs: add checksums to the end of directory leaf nodes
Darrick J. Wong [Thu, 2 Aug 2012 21:27:43 +0000 (17:27 -0400)]
libext2fs: add checksums to the end of directory leaf nodes

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>
11 years agoe2fsck: verify htree root/node checksums
Darrick J. Wong [Thu, 2 Aug 2012 21:27:30 +0000 (17:27 -0400)]
e2fsck: verify htree root/node checksums

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>
11 years agolibext2fs: add dx_root/dx_node checksum calculation and verification helpers
Darrick J. Wong [Mon, 30 Jul 2012 23:22:04 +0000 (19:22 -0400)]
libext2fs: add dx_root/dx_node checksum calculation and verification helpers

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>
11 years agodebugfs: print htree internal node checksums
Darrick J. Wong [Mon, 30 Jul 2012 23:20:04 +0000 (19:20 -0400)]
debugfs: print htree internal node checksums

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>
11 years agoe2fsck: verify extent tree blocks and clear the bad ones
Darrick J. Wong [Mon, 30 Jul 2012 23:18:04 +0000 (19:18 -0400)]
e2fsck: verify extent tree blocks and clear the bad ones

When we encounter an extent tree block that passes the header check
but fails the checksum, offer to clear just that extent block instead
of failing the whole tree, which results in the entire inode being
wiped out.

Signed-off-by: Darrick J. Wong <djwong@us.ibm.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
11 years agotune2fs: enable extent tree checksums
Darrick J. Wong [Mon, 30 Jul 2012 23:16:04 +0000 (19:16 -0400)]
tune2fs: enable extent tree checksums

Add to tune2fs the ability to recalculate extent tree checksums when
altering the metadata checksum feature flag.

Signed-off-by: Darrick J. Wong <djwong@us.ibm.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
11 years agolibext2fs: verify and calculate extent tree block checksums
Darrick J. Wong [Mon, 30 Jul 2012 23:14:04 +0000 (19:14 -0400)]
libext2fs: verify and calculate extent tree block checksums

Verify and calculate extent tree block checksums when processing
filesystems.

Signed-off-by: Darrick J. Wong <djwong@us.ibm.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
11 years agotune2fs: rewrite block bitmap checksums
Darrick J. Wong [Mon, 30 Jul 2012 23:12:04 +0000 (19:12 -0400)]
tune2fs: rewrite block bitmap checksums

When toggling metadata_csum, mark the block bitmap dirty so that it
gets written with new checksums.

Signed-off-by: Darrick J. Wong <djwong@us.ibm.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
11 years agoe2fsck: don't verify bitmap checksums
Darrick J. Wong [Mon, 30 Jul 2012 23:10:04 +0000 (19:10 -0400)]
e2fsck: don't verify bitmap checksums

Since the correct inode and block bitmaps are calculated in pass 5,
don't fail the bitmap read operation in prior passes since (a)
incorrect results won't kill us and (b) if we fail early, we'll never
_get_ to pass 5.

Signed-off-by: Darrick J. Wong <djwong@us.ibm.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
11 years agoe2fsck: verify block bitmap checksum
Darrick J. Wong [Mon, 30 Jul 2012 23:08:04 +0000 (19:08 -0400)]
e2fsck: verify block bitmap checksum

Check block bitmap checksum and write a new checksum if the
verification fails.  This is ok because e2fsck has already computed
the correct block bitmap.

Signed-off-by: Darrick J. Wong <djwong@us.ibm.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
11 years agodumpe2fs: display block bitmap checksum
Darrick J. Wong [Mon, 30 Jul 2012 23:06:04 +0000 (19:06 -0400)]
dumpe2fs: display block bitmap checksum

Display the block bitmap checksum when displaying block groups.

Signed-off-by: Darrick J. Wong <djwong@us.ibm.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
11 years agolibext2fs: create the block bitmap checksum
Darrick J. Wong [Mon, 30 Jul 2012 23:04:04 +0000 (19:04 -0400)]
libext2fs: create the block bitmap checksum

Calculate and verify the block bitmap checksum.

Signed-off-by: Darrick J. Wong <djwong@us.ibm.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
11 years agoe2fsck: verify inode bitmap checksum
Darrick J. Wong [Mon, 30 Jul 2012 23:02:04 +0000 (19:02 -0400)]
e2fsck: verify inode bitmap checksum

Rewrite the block bitmap when the checksum doesn't match.  This is
ok since e2fsck will have already computed the correct inode bitmap.

Signed-off-by: Darrick J. Wong <djwong@us.ibm.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
11 years agodumpe2fs: display inode bitmap checksum
Darrick J. Wong [Mon, 30 Jul 2012 23:00:04 +0000 (19:00 -0400)]
dumpe2fs: display inode bitmap checksum

Display the inode bitmap checksum for each block group.

Signed-off-by: Darrick J. Wong <djwong@us.ibm.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
11 years agotune2fs: rewrite inode bitmap checksums
Darrick J. Wong [Mon, 30 Jul 2012 22:58:04 +0000 (18:58 -0400)]
tune2fs: rewrite inode bitmap checksums

When toggling metadata_csum, mark the inode bitmap dirty so that they
are written out with new checksums.

Signed-off-by: Darrick J. Wong <djwong@us.ibm.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
11 years agolibext2fs: create the inode bitmap checksum
Darrick J. Wong [Mon, 30 Jul 2012 22:56:04 +0000 (18:56 -0400)]
libext2fs: create the inode bitmap checksum

Provide a field in the block group descriptor to store inode bitmap
checksum, and some helper functions to calculate and verify it.

Signed-off-by: Darrick J. Wong <djwong@us.ibm.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
11 years agomke2fs: allow metadata checksums to be turned on at mkfs time
Darrick J. Wong [Mon, 30 Jul 2012 22:54:04 +0000 (18:54 -0400)]
mke2fs: allow metadata checksums to be turned on at mkfs time

Write out reserved inodes with full checksums when writing out a
zeroed table.

Signed-off-by: Darrick J. Wong <djwong@us.ibm.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
11 years agoe2fsck: verify and correct inode checksums
Darrick J. Wong [Mon, 30 Jul 2012 22:52:04 +0000 (18:52 -0400)]
e2fsck: verify and correct inode checksums

Detect mismatches of the inode and checksum, and prompt the user to
fix the situation.

Signed-off-by: Darrick J. Wong <djwong@us.ibm.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
11 years agotune2fs: add inode checksum support
Darrick J. Wong [Mon, 30 Jul 2012 22:50:04 +0000 (18:50 -0400)]
tune2fs: add inode checksum support

This patch adds to tune2fs the ability to toggle the metadata checksum
rocompat feature flag, which will rewrite the inode table with
checksums.  Disallow changing the UUID while the fs is mounted,
because rewriting the metadata objects is racy.

Signed-off-by: Darrick J. Wong <djwong@us.ibm.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
11 years agodebugfs: dump inode checksum when appropriate
Darrick J. Wong [Mon, 30 Jul 2012 22:48:04 +0000 (18:48 -0400)]
debugfs: dump inode checksum when appropriate

Dump inode checksum when displaying inode info.

Signed-off-by: Darrick J. Wong <djwong@us.ibm.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
11 years agolibext2fs: add inode checksum support
Darrick J. Wong [Mon, 30 Jul 2012 22:46:04 +0000 (18:46 -0400)]
libext2fs: add inode checksum support

This patch adds the ability for the libext2fs functions to read and
write the inode checksum.

Signed-off-by: Darrick J. Wong <djwong@us.ibm.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
11 years agolibext2fs: precompute FS UUID checksum seed
Darrick J. Wong [Mon, 30 Jul 2012 22:44:04 +0000 (18:44 -0400)]
libext2fs: precompute FS UUID checksum seed

Precompute the FS UUID checksum seed that is used for all metadata
checksumming operations and store it in ext2_filsys.

Signed-off-by: Darrick J. Wong <djwong@us.ibm.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
11 years agodebugfs: optionally ignore bad checksums
Darrick J. Wong [Mon, 30 Jul 2012 21:46:15 +0000 (17:46 -0400)]
debugfs: optionally ignore bad checksums

If someone is debugging a badly damaged filesystem, it might be useful
to disable the checksum verifications that will otherwise prevent the
filesystem from loading.

Signed-off-by: Darrick J. Wong <djwong@us.ibm.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
11 years agolibext2fs: change ext4 on-disk layout to support metadata checksumming
Darrick J. Wong [Mon, 30 Jul 2012 21:44:15 +0000 (17:44 -0400)]
libext2fs: change ext4 on-disk layout to support metadata checksumming

Define flags and extend ext4 structure definitions to support metadata
checksumming.  Ted Ts'o covered many of these fields in an earlier
patch, but there are more required changes to the disk layout.

Signed-off-by: Darrick J. Wong <djwong@us.ibm.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
11 years agolibext2fs: read and write full size inodes
Darrick J. Wong [Mon, 30 Jul 2012 21:42:15 +0000 (17:42 -0400)]
libext2fs: read and write full size inodes

Change libext2fs to read and write full-size inodes in preparation for
the metadata checksumming patchset, which will require this.  Due to
ABI compatibility requirements, this change must be hidden from client
programs.

Signed-off-by: Darrick J. Wong <djwong@us.ibm.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
11 years agolibext2fs: enforce the block group descriptor size in ext2fs_open()
Theodore Ts'o [Mon, 30 Jul 2012 21:40:15 +0000 (17:40 -0400)]
libext2fs: enforce the block group descriptor size in ext2fs_open()

Since various parts of the library depend on the value of s_desc_size,
check to make sure it is the correct, expected value based on the file
system features.

Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
11 years agolibext2fs: remove debugging printf from ext2fs_group_desc_csum
Theodore Ts'o [Mon, 30 Jul 2012 21:39:25 +0000 (17:39 -0400)]
libext2fs: remove debugging printf from ext2fs_group_desc_csum

This reduces the number of C library symbols needed by boot loader
systems such as yaboot.

Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
11 years agolibext2fs: call numeric_progress functions through a operations struct
Theodore Ts'o [Mon, 30 Jul 2012 21:16:51 +0000 (17:16 -0400)]
libext2fs: call numeric_progress functions through a operations struct

Instead of calling ext2fs_numeric_progress_*() directly from closefs.c
and alloc_tables.c, call it via a operations structure which is only
initialized by the one program (mke2fs) which needs it.

This reduces the number of C library symbols needed by boot loader
systems such as yaboot.

Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
11 years agolibext2fs: move ext2fs_get_num_dirs to its own file
Theodore Ts'o [Mon, 30 Jul 2012 20:41:52 +0000 (16:41 -0400)]
libext2fs: move ext2fs_get_num_dirs to its own file

This reduces the number of C library symbols needed by boot loader
systems such as yaboot.

Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
11 years agolibext2fs: use strcpy()/strcat() instead of sprintf() in bmap functions
Theodore Ts'o [Mon, 30 Jul 2012 19:54:12 +0000 (15:54 -0400)]
libext2fs: use strcpy()/strcat() instead of sprintf() in bmap functions

This simplifies the number of C library symbols needed by boot loader
systems such as yaboot.

Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
11 years agolibext2fs: use abort() instead of perror()/exit()
Theodore Ts'o [Mon, 30 Jul 2012 19:46:26 +0000 (15:46 -0400)]
libext2fs: use abort() instead of perror()/exit()

This simplifies the number of C library symbols needed by boot loader
systems such as yaboot.

Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
11 years agoe2fsck: add SIGABRT to list of signals processed by sigcatcher
Theodore Ts'o [Mon, 30 Jul 2012 19:45:57 +0000 (15:45 -0400)]
e2fsck: add SIGABRT to list of signals processed by sigcatcher

Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
11 years agolibext2fs: only define ba_print_stats() when needed
Tony Breeds [Mon, 30 Jul 2012 18:51:31 +0000 (14:51 -0400)]
libext2fs: only define ba_print_stats() when needed

If ENABLE_BMAP_STATS isn't defined make ba_print_stats() do nothing.

Signed-off-by: Tony Breeds <tony@bakeyournoodle.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>