If we are checking a mounted filesystem (typically the root
filesystem, mounted read/only) and the NEEDS_RECOVERY flag is not set,
skip all of the checks associated with making sure the journal is
consistent. There is the very slight possibility we could lose if the
NEEDS_RECOVERY flag was somehow cleared even though there was data in
the journal, but this has practically never happend in practice, and
it reduces the number of reads required at boot-time, which is a big
deal when trying to reduce boot times with HDD's.
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
E2fsck needs to check to see if the backup superblock differs from the
primary superblock. Previously it was doing so by calling
ext2fs_open(), which does a lot of unnecessary work, including reading
all of the backup block group descriptors. Avoid this by reading in
the backup superblock directly.
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Move check_resize_inode() out of check_super_block(), since we only
need to test the resize_inode for correctness only if the filesystem
requires checking. This change avoids a lot of I/O operations which
slows down a 1 second boot.
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Fixed a potential bug where by partial returns from the write(2)
system call could lost characters to be sent to external progress bar
display program.
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Running e2fsck against a 14.5TB filesystem with -tt it reported
-200904kB for RAM usage in pass3 instead of the correct 2300773kB.
The RAM usage statistics were being printed with %d instead of %u.
Also fix a few places using %ld for inode numbers instead of %lu.
Signed-off-by: Andreas Dilger <adilger@sun.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
When we resize online, the primary superblock gets copied to all
the backups, and of course since we're mounted the NEEDS_RECOVERY
flag is set. A subsequent fsck will find the backups have the
NEEDS_RECOVERY flag set while the primary does not, and this
forces a full fsck pass.
I think this flag can be safely ignored in the flag comparisons.
Addresses-Red-Hat-Bugzilla: #471925
Signed-off-by: Eric Sandeen <sandeen@redhat.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
The coverity scanner found this one.
If a line in modules.dep has a ":" but no "/" then:
if ((cp = strchr(buf, ':')) != NULL)
*cp = 0;
else
continue;
if ((cp = strrchr(buf, '/')) != NULL)
cp++;
/* XXX else cp is still null */
i = strlen(cp);
... we will deref a null pointer (cp). This can be
demonstrated by putting a line like:
foo.ko:
into modules.dep. The below change just says that if no "/" is
found, treat the whole string as the module name.
Addresses-Red-Hat-Bugzilla: #486997
Signed-off-by: Eric Sandeen <sandeen@redhat.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
The other problem codes associated with failing to create the
lost+found directory are non-fatal, and this one should be non-fatal
as well. The two places which call e2fsck_get_lost_and_found()
already deal with a failure to create the directory, so there's no
point making this be a fatal error.
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
An deliberately corrupted filesystem with an insanely large
s_first_ino field could cause e2fsck to crash with a seg fault.
Thanks to Eric Sesterhenn for supplying test cases which demonstrated
this issue.
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
E2fsck was using a fixed-size 8k buffer for replaying blocks from the
journal. So attempts to replay a journal on filesystems greater than
8k would cause e2fsck to crash with a segfault.
Thanks to Miao Xie <miaox@cn.fujitsu.com> for reporting this problem.
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
The ext4 filesystem uses journals too, so remove "ext3" from the
problem descriptions involving journals.
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
A corrupted interior node in an extent tree would cause e2fsck to
crash with the error message:
Error1: Corrupt extent header on inode 107192
Aborted (core dumped)
Handle this and related failures when scanning an inode's extent tree
more robustly.
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
If the directory is packed with no slack space, as soon as any new
directory entries are added, leaf nodes end up getting split and
directory ends up getting very inefficient.
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Report whether a fragmented inode is a directory or a file, as this is
highly useful for determining what is going on with an ext4 filesystem.
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Track the number of non-contiguous files and directories so we can
give more detailed information in verbose mode.
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Some of these could affect filesystems between 2^31 and 2^32-1 blocks.
Thanks to Valerie Aurora Henson for pointing out the problems in
lib/ext2fs/alloc_tables.c, which led me to do a "make gcc-wall" scan
over the source tree.
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
It's been a while since I've done a build using "configure
--enable-profile", and some bitrot had set into the Makefiles...
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
If a block device is read-only, e2fsck -p gets into an infinite loop
trying to preenhalt, closing and flushing the fs, which tries to flush
the cache, which gets a write error and calls preenhalt which tries to
close and flush the fs ... ad infinitum.
Per Ted's suggestion just flag the ctx as "exiting" and short-circuit
the infinite loop.
Tested by running e2fsck -p on a block device set read-only by BLKROSET.
Thanks to Vlado Potisk for reporting this.
Addresses-Red-Hat-Bugzilla: #465679
Signed-off-by: Eric Sandeen <sandeen@redhat.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Some recent changes had caused diet libc support to bitrot. Fix up
missing header files and other portability fixups needed for dietlibc.
(Many of these changes also improve general portability.)
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
This fixes a regression that was introduced in commit dcc91e10 (it
showed up first in e2fsprogs 1.40.7). Since we weren't freeing the
filesystem handle, ext2fs_open2() was returning EBUSY, and so this
caused a failure in the code that would automatically determine the
filesystem block size when only the superblock number was specified by
the user.
This was discussed in http://ubuntuforums.org/showthread.php?t=789323,
and Matthias Bannach pointed this out to me, for which I am very
grateful.
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
A few e2fsck problem messages supply their own prompt, and set a
prompt value of PROMPT_NULL. We have to check for this case, and not
pass the null string to _(), since that will result in the translation
header getting printed, like this:
Run journal anywayProject-Id-Version: e2fsprogs
Report-Msgid-Bugs-To: FULL NAME <EMAIL@ADDRESS>
POT-Creation-Date: 2008-02-28 21:45-0500
PO-Revision-Date: 2006-05-23 11:12+0000
Last-Translator: Somebody32 <som32@mail.ru>
Language-Team: Russian <ru@li.org>
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
Plural-Forms: nplurals=3; plural=n%10==1 && n%100!=11 ? 0 : n%10>=2 &&
n%10<=4 && (n%100<10 || n%100>=20) ? 1 : 2;
X-Launchpad-Export-Date: 2008-05-28 00:43+0000
X-Generator: Launchpad (build Unknown)
<y>? yes
Addresses-Launchpad-Bug: #246892
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Pass in -rpath-link option to the linker so that blkid will build
correctly on systems that don't have libcom_err.so.2 installed.
Fix debugfs to only try to link with -ldl when building without shared
libraries; with ELF shared libraries, the library which requires -ldl
(libss.so) can required the library dependency itself.
Fix how we build tune2fs.static so that we use @LDFLAG_STATIC@, via
$(LDFLAGS_STATIC), instead of hard-coding the use of -static.
Addresses-Sourceforge-Bug: #2088537
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
In order to make it possible for the test_io manager to be compiled in
by default, make all of the programs that might try to use it to only
do so if the environment variables TEST_IO_FLAGS and TEST_IO_DEBUG are
set.
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
The rec_len field in the directory entry is 16 bits, so if the
filesystem is completely empty, rec_len of 0 is used to designate
65536, for the case where the directory entry takes the entire 64k
block.
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Fix error message to print the depth of a corrupt htree directory.
Signed-off-by: Andreas Dilger <adilger@sun.com>
Signed-off-by: Kalpak Shah <kalpak.shah@sun.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
This makes it easier to locate the problem code in question.
Signed-off-by: Andreas Dilger <adilger@sun.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
This patch changes the e2fsck_write_bitmaps() function to write out the
block and inode bitmaps together, instead of writing them in two passes.
Signed-off-by: Andreas Dilger <adilger@sun.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
__LITTLE_ENDIAN is set by the glibc headers, and isn't portable. We
should be using WORDS_BIGENDIAN, which is set by autoconf.
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
For inodes with blocks preallocated with FALLOC_FL_KEEP_SIZE, e2fsck
complained about i_size being too small. Fix this.
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
A misunderstanding C's precedence rules and the meaning of
s_log_block_size meant that we were capping the maximum size of
extent-based files at 8GB instead of the 64TB that it should be for
filesystems with 4k block sizes.
Addresses-Kernel-Bugzilla: #11341
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Also added support for "e2fsck -E fragcheck" which issues a
comprehensive report of discontiguous file extents.
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
The Makefile should use BUILD_CFLAGS instead of ALL_CFLAGS since it
will be built for the host, not the target.
Addresses-Sourceforge-Bug: #2019287
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
This is needed so that "make check" works in the e2fsck library even
if the shared libraries are not yet installed, and so that we run
those programs against the version of the libraries built in the build
tree.
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Solaris's header files are very picky about which C compiler can be
used for SUSv3 conformance. Use of C99 is not compatible with SUSv2
(_XOPEN_SOURCE=500), and C89 is not compatible with SUSv3
(_XOPEN_SOURCE=600). Since we need some SUSv3 functions, consistently
use SUSv3 so that e2fsprogs will build on Solaris using c99.
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Gcc only supports __builtin_expect for gcc versions 2.96 and up.
Since it's tricky to check for gcc 2.95 vs 2.96 (and either are only
used on really ancient systems anyway), we only use this optimization
on 3.x and newer versions of gcc.
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Solaris polutes the C namespace with kmem_cache_t when
you include in/netinet.h is included, so rename kmem_cache_t
to lkmem_cache_t.
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
This:
Truncating bigfile to 14680064000000
Pass 1: Checking inodes, blocks, and sizes
Inode 49154, i_size is 14680064000000, should be 0. Fix<y>?
is a bit unexpected. It's because the size is being checked against
the max sizes for bitmap files, not extent-based files.
Nick saw this with his 14TB file.
Patch below applies different size limits to the different file
formats.
Signed-off-by: Eric Sandeen <sandeen@redhat.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
The logical block numbers must be monotonically increasing, and there
must not be any overlapping extents. If any are found, report them as
filesystem corruption.
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Wire up callback functions for ext2fs_alloc_block() and
ext2fs_block_alloc_stats() so that we use the ctx->block_found_map
block bitmap to determine which new block we should allocate, and then
to update the block_found_map bitmap if the extent functions need to
allocate or release blocks.
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
ext2fs_extent_delete() will leave the extent handle pointing at the
next extent --- except if the last extent in the node. To deal with
this last case, call ext2fs_get_extent_info() and stop scanning after
processing info->num_entries extents.
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
ext2fs_delete_extent() deletes the current extent and moves to the
next extent (if present). So we need to skip moving to the next
extent and get the (new) current extent and check it before moving on.
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
While synchronizing e2fsck's recovery.c with the latest 2.6 kernel
sources, I discovered a serious bug that apparently had been fixed in
the kernel sometime between Deceber 2003 and April 2005, but which had
not been carried over to e2fsprogs. Specifically, when blocks whose
first 4 bytes are JFS_MAGIC_NUMBER (0xc03b3998) are written into the
journal, the first 4 bytes zero'ed out. A one character typo meant
that when the blocks were replayed by e2fsck, the JFS_MAGIC_NUMBER
would not be restored.
Oops.
Fortunately, it is *highly* unlikely that ext4 metadata blocks will
contain that magic number in the first four bytes, and data=journalled
is a relatively rarely used.
This commit fixes this bug, as well as updating e2fsck's recovery.c to
be in sync with 2.6.25.
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
This simplifies the code, and using the uninit_bg with the inode table
lazily initialized is just as good.
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Allow the old name of uninit_groups when converting feature names for
backwards compatibility for scripts running mke2fs and tune2fs.
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
pass1 was checking that an "extent's" start+len did not extend
past the last filesystem block, but unless we are at a leaf
block, the physical block is that of a node in the tree, and
the length may include sparseness. The test is only valid
for leaf blocks.
Signed-off-by: Eric Sandeen <sandeen@redhat.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
In current git there is a double free on ctx->filesystem_name in the
end of main() and in e2fsck_free_context, causing e2fsck to abort at
the end of pass5.
Signed-off-by: Matthias Koenig <mkoenig@suse.de>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Fedora seems to be gearing up to add
-Werror-implicit-function-declaration
to the standard build flags, so I thought I'd get out ahead
of this one...
Signed-off-by: Eric Sandeen <sandeen@redhat.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Extent data is shared with the i_block[] space in the inode,
but it is always swapped on access, not when the inode is read.
In e2fsck/pass1.c we must be careful when checking validity
of the extents flag on the inode. If the flag was set when
the inode was read & swapped, then the extents data itself
(in ->i_block[]) was NOT swapped, so testing for a valid
extent header requires some swapping first. Then, if we
ultimately set the extents flag, all of i_block[] must be
re/un-swapped.
This passes the f_extent regression test on both ppc & x86.
Signed-off-by: Eric Sandeen <sandeen@redhat.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Add a check for the UNINIT_BLOCKS flag set in the last group. The kernel
patch doesn't handle this gracefully, because it assumes there are a full
set of blocks in each group marked UNINIT_BLOCKS. The kernel should be
fixed up, but in the meantime this avoids hitting the problem, and is
more consistent with lazy_bg not marking the last group UNINIT.
Signed-off-by: Andreas Dilger <adilger@dilger.ca>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Change the function signature so that ext2fs_set_gdt_csum() returns an
error code.
If the inode bitmap hasn't been loaded return EXT2_ET_NO_INODE_BITMAP.
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Also make sure the device name has no spaces in it, to avoid confusing
displays, and make ctx->filesystem_name and ctx->device_name allocated
memory to avoid potential problems in the future.
Addresses-Launchpad-Bug: #203323
Addresses-Sourceforge-Bug: #1926023
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
If a negative progress argument is given to -C, initially suppress the
progress information. It can be enabled later by sending the e2fsck
process a SIGUSR1 signal.
Addresses-Launchpad-Bug: #203323
Addresses-Sourceforge-Bug: #1926023
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
The ext2fs_extent_get() function was not OR-ing together UNINIT
and LEAF flags in the case where an extent was both; so if we
had an extent which was both uniint and leaf, pass1 would bail
out where depth == max_depth but was not marked as leaf, and
e2fsck (from the next branch) would abort with:
e2fsck 1.40.8 (13-Mar-2008)
Pass 1: Checking inodes, blocks, and sizes
Error1: No 'down' extent
Aborted
Also, if the error is encountered again, print the inode number
to aid debugging until it's properly handled, at least.
Signed-off-by: Eric Sandeen <sandeen@redhat.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
This patch has all the necesary pieces to open and fix filesystems created
with the uninit block group feature.
Signed-off-by: Jose R. Santos <jrs@us.ibm.com>
Signed-off-by: Andreas Dilger <adilger@clusterfs.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
This patch includes the changes required to e2fsck to understand the
nlink count changes made in the kernel.
In e2fsck pass 4, when we fetch the actual link count, if it is
exceeds 65,000 we set the link count to 1. We silently fix the
situation where the nlink count of the directory is 1, and there are
fewer than 65,000 subdirectories, since since that can happen
naturally.
Patch originally from CFS, significantly rewritten by Theodore Ts'o.
Signed-off-by: Andreas Dilger <adilger@clusterfs.com>
Signed-off-by: Kalpak Shah <kalpak@clusterfs.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Change the prompt so it is clear to the user that e2fsck will be
clearing the htree information, not the directory inode itself, when
the htree information has proven to be corrupt.
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
If a directory's i_size is bigger than the number of blocks, don't try
to allocate extra empty blocks to the end of the directory; there's no
real point to do that. Also, if a directory's i_size is not a
multiple of the blocksize, flag that as a mistake so it can be fixed.
This more elegantly addresses the problem which was found on Bas van
Schaik's filesystem.
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Turns out a "should never happen" error can indeed happen very easily
if a directory with an htree index has an incorrect, and too-large,
i_size field. This patch fixes this so that we handle this situation
gracefully, allowing filesystems with this error to be fixed.
In another patch I will clean up the specific problem which caused the
internal "should never happen" error from happening at all, but patch
will prevent e2fsck from crashing, and prompt the user to remove the
htree index, so it can be rebuilt again after pass 3.
Thanks to Bas van Schaik at Tetra for giving me access to his system
so this problem could be debugged.
Addresses-Launchpad-Bug: #129395
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Stop clearing the EXT2_FEATURE_RO_COMPAT_LARGE_FILE flag automatically
if there are no large files in the filesystem. It's been almost a
decade since there have been kernels that don't support this flag, and
e2fsck clears it quietly without telling the user why the filesystem
has been changed.
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Document in the e2fsck man page that e2fsck finds duplicate filenames
only when the -D option is passed to e2fsck.
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Add vertificaton of the in-inode EA information, and allow in-inode
EA's to have a checksum.
Signed-off-by: Andreas Dilger <adilger@clusterfs.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Factor out code to clear a bogus inode and update e2fsck's internal
data structures accordingly into a common routine,
e2fsck_clear_inode(). This saves about 200 bytes in the compiled x86
e2fsck executable, and makes the code more maintainable in the
long-term.
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Also removed the --enable-dynamic-static configure option.
Unfortunately the usefulness of building e2fsck statically is gone on
all modern distributions, since everything else on the system is built
dynamically these days. In fact on some distributions it is almost
impossible to build programs statically any more.
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Recent e2fsprogs (1.40.3 and higher) fsck compares primary superblock to
backups, and if things differ, it forces a full check. However, the
kernel has a penchant for updating flags the first time a feature is
used - attributes, large files, etc.
This is a bad idea, and we should break the kernel of this habit,
especially for the ext4 feature flags. But for now, let's make e2fsck
avoid forcing a full check and backup except when absolutely
necessary.
Signed-off-by: Eric Sandeen <sandeen@redhat.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Previously "e2fsck -fD" on a non-htree directory would sort the
directory alphabetically by name. That's stupid. Better to sort the
directory by inode number, since that will optimize performance much
more significantly than sorting by name!
Addresses-Sourceforge-Feature-Request: #532439
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Add an explanation of how e2fsck might decide to optimize a few
directories even without the -D option being specified.
Addresses-Debian-Bug: #441872
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Add some additional checks, primarily in resize2fs and in the rarely
used (and soon to-be-deprecated) e2fsck byte-swap filesystem function.
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Ubuntu has init script and installer issues which cause them to have
significant problems with time zones. This is compounded with a
relatively inexperienced user base who want to dual boot with Windows
and so have their hardware clocks tick localtime.
Addresses-Ubuntu-Bug: #131201
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
The FLEX_BG feature allows the inode table, block bitmap, and inode
bitmaps to be located anywhere in the filesystem. Update e2fsck and
libext2fs's checking code to recognize this.
Signed-off-by: Jose R. Santos <jrs@us.ibm.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
--
e2fsck/super.c | 14 ++++++++++++--
lib/ext2fs/check_desc.c | 15 +++++++++++++--
2 files changed, 25 insertions(+), 4 deletions(-)
Avoid pointer cast and call e2fsck_write_inode_full() the same way
as check_inode_extra_space() does.
Signed-off-by: Dmitry V. Levin <ldv@altlinux.org>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
If the primary superblock differs from the backup superblock in
certain key respects, force a full check (if e2fsck was invoked in
preen mode). If the filesystem check passes cleanly, and the
filesystem was opened in read/write mode, then write the primary
superblock to all of the backups.
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
If e2fsck adds or deletes any of the feature bitmasks, clear
EXT2_FLAG_MASTER_SB_ONLY so the backup superblocks are updated when
e2fsck finishes.
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
If superblock mount time or last write time is in the future, and the
user refuses to fix the problem, don't mark the filesystem as being
invalid and needing to be checked.
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
The Ubuntu init scripts don't properly set the system time correctly
from hardware clock if the hardware clock is configured to tick local
time instead of GMT time.
Work around this as best as we can by providing an option in
/etc/e2fsck.conf which can be set on Ubuntu systems:
[options]
buggy_init_scripts = 1
Addresses-Debian-Bug: #441093
Addresses-Ubuntu-Bug: #131201
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
E2fsck currently only retries with the backup superblock if the
primary superblock is missing (e.g., overwritten with garbage). If
the superblock is just corrupted enough that it looks like ext2/3/4
superblock, but it is corrupt enough that ext2fs_open2() returns an
error, e2fsck stops without retrying. Let's fix this oversight.
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
atoi() does not check for errors so it shouldn't be used for human
input. For example, if the user enters the command "e2fsck -C -n" and
forgets that -C requires an argument, the -n will be used as the
argument to -C, and not parsed as an option. When using sscanf(),
this error case can be detected.
Addresses-Debian-Bug: #435381
Signed-off-by: Bernd Schubert <bs@q-leap.de>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
The need for fixing byte-swapped filesystems is long-gone, and this is
getting in the way of cleaning up e2fsprogs's bitmaps code. So let's
get rid of it; modern kernels haven't been able to deal with a
byte-swapped filesystem in in about 9 years.
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Allow files to be preallocated on-disk up to the next multiple of the
system's page size without complaining about extra blocks.
Signed-off-by: Andreas Dilger <adilger@clusterfs.com>
Signed-off-by: Girish Shilamkar <girish@clusterfs.com>
Signed-off-by: Kalpak Shah <kalpak@clusterfs.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
This patch instruments the libext2fs unix I/O manager and adds bytes
read/written and data rate to e2fsck -tt pass/overall timing output.
Signed-off-by: Jim Garlick <garlick@llnl.gov>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Create new functions ext2fs_{set,get}_{inode,block}_bitmap_range()
which allow programs like e2fsck, dumpe2fs, etc. to get and set chunks
of the bitmap at a time.
Move the representation details of the 32-bit old-style bitmaps into
gen_bitmap.c.
Change calls in dumpe2fs, mke2s, et. al to use the new abstractions.
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
A recent change to e2fsck_add_dir_info() to use tdb files to check
filesystems with a very large number of filesystems had a typo which
caused us to resize the wrong data structure. This would cause a
array overrun leading to malloc pointer corruptions. Since we
normally can very accurately predict how big the the dirinfo array
needs to be, this bug only got triggered on very badly corrupted
filesystems.
Thanks to Andreas Dilger for submitting the test case which discovered
this problem, and to Kalpak Shah for writing a random testing script
which created the test case.
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Recently, one of our customers found this message in pass2 of e2fsck
while doing some regression testing:
"Entry '4, 0x695a, 0x81ff, 0x0040, 0x8320, 0xa192, 0x0021' in ??? (136554) has
rec_len of 14200, should be 26908."
Both the displayed rec_len and the "should be" value are bogus. The
reason is that salvage_directory sets a offset beyond blocksize
leading to bogus messages.
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
profile_set_default() sets the value of the pseudo file "<default>".
If the file "<default>" had previously been passed to profile_init(),
then def_string parameter will be parsed and used as the profile
information for the "<default>" file.
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
The Turkish translation has a bug in it where it has the translation
of "E@e '%Dn' in %p (%i)" to "E@E". This causes @E to be expanded at
@E, recursively, forever, until the stack fills up e2fsck core dumps.
Fix it by stopping after a recursive depth of 10, which is far more
than we need.
Addresses-Sourceforge-Bug: 1646081
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Add an extra validity test in check_ext_attr(). If an attribute's
e_value_size is zero the current code does not allocate a region for it
and as a result the e_value_offs value is not verified. However, if
e_value_offs is very large then the later call to
ext2fs_ext_attr_hash_entry() can dereference bad memory and crash
e2fsck.
Signed-off-by: Andreas Dilger <adilger@clusterfs.com>
Signed-off-by: Jim Garlick <garlick@llnl.gov>
The original code only checked the direct blocks to make sure the
journal inode was sane. Unfortunately, if some or all of the indirect
or doubly indirect blocks were corrupted, this would not be caught.
Thanks to Andreas Dilger and Kalpak Shah for noticing this problem.
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
If the journal inode was corrected from s_jnl_blocks, write the fixed
journal inode back to disk.
Signed-off-by: Kalpak Shah <kalpak@clusterfs.com>
Signed-off-by: Andreas Dilger <adilger@clusterfs.com>
If the journal had been removed because it was corrupt, the
E2F_FLAG_JOURNAL_INODE flag will be set. If this flag is set, then
recreate the filesystem after checking the filesystem.
Signed-off-by: Kalpak Shah <kalpak@clusterfs.com>
Signed-off-by: Andreas Dilger <adilger@clusterfs.com>
This patch changes ext2fs_open() to set EXT2_FLAG_MASTER_SB_ONLY by
default. This avoids some problems in e2fsck (reported by Jim Garlick)
where a corrupt journal can end up writing the bad superblock to the
backups. In general, only e2fsck (after the filesystem is clean),
tune2fs, and resize2fs should change the backup superblocks by default.
Most callers of ext2fs_open() should not be touching anything where the
backups should be touched. So let's change the defaults to avoid
potential problems.
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
The Linux floppy driver is a bit different from the other block device
drivers, in that if the device has been opened with O_EXCL, it disallows
another open(), even if the second open() does not have the O_EXCL flag.
So this patch moves the call to ext2fs_get_device_size() so that if it
returns EBUSY, e2fsck can close the filesystem, retry the device size,
and then reopen it. This rather complicated approach is required since
we need to know the blocksize of the filesystem before we can call
ext2fs_get_device_size().
Addresses Debian Bug: #410569
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
I've been investigating why e2fsck refuses to restore the backup superblock
of a partition with a broken primary superblock.
The partition in question has a block size of 4096, and mke2fs reports that
backup superblocks were created on blocks 32768, 98304, 163840, ...
When running e2fsck, get_backup_sb starts by guessing a block size of 1024
and backup superblock at block 8193. I'm not sure why, but it actually finds
a superblock at this location, so returns a context with superblock 8193,
blocksize 1024.
Later on, ext2fs_open2() tries to process this superblock. It then realises
that the block size value stored in the superblock (4096) does not match what
it was told (1024), so it bails out with EXT2_ET_UNEXPECTED_BLOCK_SIZE. fsck
aborts without fixing the partition.
The following patch solves the problem by discounting superblocks which do
not meet the currently-sought block size.
As a result, block 32768 (blocksize=4096) is now used to restore the backup,
which agrees with the first location that mke2fs listed.
Signed-off-by: Daniel Drake <d.drake@mmm.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
At the second conditional iter->file could still be NULL. We need to
check for it again. Should never happen in practice, but better to be
sure.
Coverity ID: 6: Forward Null
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
This patch removes a code snippet from check_ea_in_inode() in pass1 which checks
if the EA values in the inode are sorted or not. The comments in fs/ext*/xattr.c
state that the EA values in the external EA block are sorted but those in the
inode need not be sorted. I have also attached a test image which has unsorted
EAs in the inodes. The current e2fsck wrongly clears the EAs in the inode.
Signed-off-by: Kalpak Shah <kalpak@clusterfs.com>
Mke2fs is supposed to set the uid/gid ownership of the root directory when
a non-rooot user creates the filesystem. This wasn't working correctly
if the uid/gid was > 16 bits. In additional, debugfs wasn't displaying
large uid/gid's correctly. This patch fixes these two programs.
Signed-off-by: Eric Sandeen <sandeen@redhat.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Another small bug I think: if the root directory contains shared
blocks, e2fsck pass1c search_dirent_proc() will be looking for
one more containing directory than it will ever find, and thus
loses an opportunity to terminate early.
Signed-off-by: Jim Garlick <garlick@llnl.gov>
Fix a problem byte-swapping fast symlinks inodes that contain extended
attributes.
Addresses Red Hat Bugzilla: #232663
Addresses LTC Bugzilla: #27634
Signed-off-by: "Bryn M. Reeves" <breeves@redhat.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Fix a typo which could cause e2fsck to throw an I/O error while doubling
checking whether or not a special device file was really an inode.
Also, don't do this tests on symbolic links since for filesystems with a
large numbers of symlinks it could degrade performance and increases the
risk for false positives.
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Add better ehandler_operation() markers so it is clearer what e2fsck was
doing when an I/O error is reported.
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
I think this is a small buglet in e2fsck: if a file has multiple hard
links, e2fsck pass1c search_dirent_proc() doesn't maintain its count
properly and may return DIRENT_ABORT before it has found containing
directories for all inodes sharing blocks.
Signed-off-by: Jim Garlick <garlick@llnl.gov>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
If e2fsck.conf configures a scratch_files directory which is available,
and the number of directories exceeds scratch_files.numdirs_threshold,
then try to use the tdb library to store the directory information
abstraction. This allows us to check very large filesystems without
needing as much physical memory.
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
If e2fsck.conf configures a scratch_files directory which is available,
and the number of directories exceeds scratch_files.numdirs_threshold,
then try to use the tdb library to store the inode count abstraction.
This allows us to check very large filesystems without needing as much
physical memory.
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Change the iterator abstraction and replace e2fsck_get_dir_info() with
e2fsck_dir_info_{set,get}_{parent,dotdot} so that we can support an
on-disk dirinfo implementation. This allows e2fsck to check very large
filesystems on systems with smaller amounts of memory and/or address
space.
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
This is probably only useful in artificial test cases, but it will be
useful if we ever do the "inodes in directory" idea for ext4.
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
If there is an orphaned inode whose '..' entry is pointing at a special
file, the filetype of the '..' entry will set to the type of the special
file. When the orphaned directory is reconnected to /lost+found, the
filetype of the '..' field is not reset to EXT2_FT_DIR, so a second
e2fsck is required to repair the filesystem.
We address this situation by setting the filetype of '..' when we
reconnect the inode to /lost+found.
Addresses Lustre Bug: #11645
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Don't assume that a special device is bogus just because i_blocks is
non-zero. The i_blocks field could get adjusted later, and if this
happens it will confuse the e2fsck_process_bad_inode() in pass 2. In
practice true garbage inodes will have random non-zero in
i_blocks[4..15], so there's no point doing the check for an illegal
i_blocks value.
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
The profile must be freed early if the subsequent memory allocation
fails for 'expanded_filename'.
Coverity ID: 14: Resource Leak
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
It is possible that e2fsck_get_dir_info() returns a NULL pointer.
We do not want to blow up when dereferencing p. It seems to be
more sane/safe to call fix_problem(ctx, PR_3_NO_DIRINFO, pctx)
if p is NULL at this point since we do not have any DIRINFO
for pctx->ino.
Also fix another (already existing) error check for
e2fsck_get_dir_info() later in the function so that it reports the
correct inode number if the dirinfo information is not found for
p->parent.
(Both of these are "should-never-happen" internal e2fsck errors that
would indicate a programming bug of some kind.)
Coverity ID: 10: Null Returns
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
The dict_lookup() function can potentially return a NULL dnode_t. It is
not checked in two places in the clone_file() function. Looks to be
safe to continue if n is NULL, so just print a warning message and
continue.
Coverity ID: 9: Null Returns
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Found 2 of the three places where a return code for ext2fs_write_inode() was
not being checked.
The second fix in e2fsck/emptydir.c is basically just to shut coverity up even
though it really is unnecessary.
Coverity ID: 1: Checked Return
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Change all of the e2fsprogs programs to use the newer add_error_table()
and remove_error_table() interfaces instead of the much older
initialize_*_error_table() function.
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
The e2fsprogs and kernel implementation of directory hash tree has a
bug which causes the implementation to be dependent on whether
characters are signed or unsigned. Platforms such as the PowerPC,
Arm, and S/390 have signed characters by default, which means that
hash directories on those systems are incompatible with hash
directories on other systems, such as the x86.
To fix this we add a new flags field to the superblock, and define two
new bits in that field to indicate whether or not the directory should
be signed or unsigned. If the bits are not set, e2fsck and fixed
kernels will set them to the signed/unsigned value of the currently
running platform, and then respect those bits when calculating the
directory hash. This allows compatibility with current filesystems,
as well as allowing cross-architectural compatibility.
Addresses Debian Bug: #389772
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
- EXT4_FEATURE_RO_COMPAT_HUGE_FILE (0x0008) - change 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 (could also be part of 64BIT).
E2fsck and debugfs changed to support i_blocks_hi instead of l_i_frag and
l_i_fsize.
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Badblocks now interprets last_block argument as the last block to check,
instead of the number of blocks to check, to be consistent with the
badblocks man page.
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Don't core dump if there is a corrupt htree interior node. If the block
number is larger than the number of blocks in the directory, don't write
past the end of malloc'ed memory.
Addresses SourceForge Bug: #1512778
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Create new ext2fs library inline functions in order to calculate
the starting and ending blocks in a block group.
Signed-off-by: Eric Sandeen <esandeen@redhat.com>
There were still some %d's lurking when we print blocks & inodes; also
many of the counters in the e2fsck_struct were signed, and probably
need to be unsigned to avoid overflows.
Signed-off-by: Eric Sandeen <esandeen@redhat.com>
For loops iterating over all group descriptors, consistently define
first_block and last_block in a way that they are inclusive of the
range, and do not overflow.
Previously on the last block group we did a test of <= first +
dec_blocks; this would actually wrap back to 0 for a total block count
of 2^32-1
Also add handling of last block group which may be smaller.
Signed-off-by: Eric Sandeen <esandeen@redhat.com>
For loops such as:
for (i=1; i <= fs->super->s_blocks_count; i++) {
<do_stuff>
}
if i is an int and s_blocks_count is (2^32-1), the condition is never false.
Change these loops to:
for (i=1; i <= fs->super->s_blocks_count && i > 0; i++) {
<do_stuff>
}
to stop the loop when we overflow i
Signed-off-by: Eric Sandeen <esandeen@redhat.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
This fixes some (but not all) of the compatibility bugs which prevented
e2fsprogs from being compiled on a Linux 2.0.35 system. There are still
some unprotected use of long long's, and apparently some type problems
with the uuid library, but these can be fixed up later.
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Add missing brelse() calls to avoid memory leaks in error paths. (Thanks
to Michael C. Thompson for pointing these out; they were originally
found using Coverity.)
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
The exlcusive device safety check that was added inadvertently broke
e2fsck -cc and mke2fs -cc since e2fsck and mke2fs hold the device
in exclusive access when badblocks is run. So we add a private option
to badblocks, -X, which is passed by e2fsck and mke2fs to badblocks
to indicate that it is OK to skip the EXT2_MF_BUSY checks.
Addresses Debian Bug: #366017
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
This feature is initially intended for testing purposes; it allows an
ext2/ext3 developer to create very large filesystems using sparse files
where most of the block groups are not initialized and so do not require
much disk space. Eventually it could be used as a way of speeding up
mke2fs and e2fsck for large filesystem, but that would be best done by
adding an RO_COMPAT extension to the filesystem to allow the inode table
to be lazily initialized on a per-block basis, instead of being entirely initialized
or entirely unused on a per-blockgroup basis.
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Integrate profile_std_line() into parse_line(), and profile_parse_file()
into profile_update_file() to make the code use less memory.
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Change the format string(%d, %ld) for a block number and inode number
to %u or %lu.
Signed-off-by: Takashi Sato <sho@tnes.nec.co.jp>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Thanks to Andreas Dilger for this idea. If the filesystem is not mounted,
e2fsck will open it in exclusive mode to prevent the a confused/careless
system administrator from mounting the filesystem while the filesystem
check is taking place, which could cause all sorts of problems.
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Check to see if the superblock hint for the external journal needs to
be updated, and if so, offer to update it. (Addresses Debian Bug:
#355644)
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
(This was an artifact of the migration of the sources from BitKeeper
to Mercurial; mea culpa, mea maximum culpa --- Ted)
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Whether fs checks are skipped when the system is running on battery can be
controlled by the new e2fsck.conf option defer_check_on_battery (this option
defaults to TRUE).
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
On Sat, Jan 28, 2006 at 12:53:33PM -0600, Fredrick Knieper wrote:
> Package: e2fsprogs
> Version: 1.38+1.39-WIP-2005.12.31-1
>
> When running fsck at boot or when running e2fsck manually on a device,
> fsck will not check a filesystem based on the maximum mount count,
> unless a flag such as -f or -c is used to force the filesystem check.
What's happening is that when you run on battery, e2fsck will delay
running the filesystem check, on the assumption that it is better to
defer the check until some time in the future when your laptop is
running on AC mains again. This deferral is not infinite, however; if
the number of mounts exceeds twice the max mount counts, or if the
interval between checks exceeds twice the check interval, e2fsck will
force the check even though you are on battery.
I've changed the sources to print a message to make this more clear.
Addresses Debian Bug: #350306
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
This also changes syntax accepted by the profile parser. The value of
profile relations must not contain spaces unless it is quoted;
otherwise the parser will throw an error. Previously something like
this was allowed:
[liboptions]
test = foo bar
Now, the relation must be in double quotes in order to be valid, i.e.,
"foo bar".
Comments are allowed anywhere and can be started with either a ';' or
a '#' character. The only place where comments will not be intepreted
as beginning a comment is in a quoted string.
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
E2fsck will now report syntax errors in /etc/e2fsck.conf intead of simply
ignoring the config file when there are errors.
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Unified batchmode and command-line handling.
profile_is_node_final() and profile_find_node_relation() are static,
unused functions.
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Fix #include of com_err.h so that it isn't required that the com_err
development environment be installed. (Addresses Debian Bug: #345519)
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Add the ability for the e2fsck configuration file to override the
behaviour of e2fsck when a particular filesystem problem is
encountered. This allows reconnecting an inode to lost+found to not
stop the boot sequence, if a system administrator really badly wants
this behaviour for some specialized reason, for example.
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Also, use this environtment variable to make sure that a local
/etc/e2fsck.conf file will not interfere with the regression test
suite.
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
If the e2fsck configuration file sets the allow_cancellation option to be
true, then if the filesystem does not have any known problems, and was
known to be cleanly unmounted, then let e2fsck exit with a status code of 0
instead of 32 (FSCK_CANCELED) so that the bootup scripts will continue
without stopping the boot. (Addresses Debian Bug: #150295)
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
The profile library was originally written by Theodore Ts'o in 1995
for use in the MIT Kerberos v5 library. It has been
modified/enhanced/bug-fixed over time by other members of the MIT
Kerberos team. This version was originally taken from the Kerberos
v5 distribution, version 1.4.2, and radically simplified for use in
e2fsprogs. (Support for locking for multi-threaded operations,
being able to modify and update the configuration file
programmatically, and Mac/Windows portability have been removed.
It has been folded into a single C source file to make it easier to
fold into an application program.)
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
If the superblock last mount time or last write time is in the future, fix
this automatically if e2fsck is in preeen mode, since Debian's boot sequence
bogusly doesn't set the time correctly until potentially very late in the bootup
process, and this can cause false positives that will cause users' systems
to fail to booting. (Addresses Debian Bugs #343662 and #343645)
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
A user was confused about whether or not e2fsck -c performed a destructive
test on the filesystem, since it stated that -cc resulted in a non-destructive
read/write test. Clarify that -c does a read/only test.
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Don't let the user run e2fsck -ccn on the root partition, without warning
that he or she might be doing something Really Stupid.
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Detect if the superblock's last mount field or last write field is in
the future, and offer to fix if so. (Addresses Debian Bug #327580)
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Don't do a structure copy via an assignment in e2fsck's pass #1 when
it is a no-op in order to avoid false positives from valgrind.
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
This was actually caused by two bugs. The first bug is that if the
inode has been fully fixed up, the code will attempt to remove the
inode from the inode_bad_map without checking to see if this bitmap is
present. Since it is cleared at the end of pass 2, if
e2fsck_process_bad_inode is called in pass 4 (as it is for
disconnected inodes), this would result in a core dump.
The first bug was mostly hidden by a second bug, which caused
e2fsck_process_bad_inode() to consider all inodes without an extended
attribute to be not fixed.
Note: This bug was introduced in e2fsprogs 1.36.
(Addresses Debian Bug: #316736)
easier to understand (sorry, translators).
Add new @m (multiply-claimed) and @n (invalid) expansions for e2fsck
problem descriptions.
Add Dutch translation, and update French translation.
Add an explanation of how the @-expansion and %-exapansion works in
e2fsck/problem.c to make life easier for the translators.
Synchronize and update po files.
Theodore Ts'o