Jose R. Santos [Tue, 14 Aug 2007 04:33:03 +0000 (23:33 -0500)]
Relax group descriptor checking for FLEX_BG
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>
--
Jose R. Santos [Mon, 22 Oct 2007 02:03:14 +0000 (21:03 -0500)]
lib/ext2fs/Makefile.in: Reorder some of the $(SRCS) in alphabetical order.
All files under $(OBJS) and $(SRCS) should be in alphabetical order
but this is not always the case. Let fix some some of these before
applying new files to the list of $(SRCS).
Signed-off-by: Jose R. Santos <jrs@us.ibm.com> Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
--
Dmitry V. Levin [Sat, 20 Oct 2007 18:09:30 +0000 (22:09 +0400)]
blkid.pc, ss.pc: Move private libs from "Libs:" to "Libs.private:"
According to pkg-config(1) manual page, private libraries should be
defined by "Libs.private:" line. Private libraries are libraries which
are not exposed through our library, but are needed in the case of
static linking.
Signed-off-by: Dmitry V. Levin <ldv@altlinux.org> Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Theodore Ts'o [Mon, 22 Oct 2007 14:19:20 +0000 (10:19 -0400)]
badblocks: Factor out calls to strtoul to a helper function
The strtoul() function has a lot of messy error checking that needs to
be done; by factoring it out into one place we can make sure it's done
right in all of the places where it is called.
Theodore Ts'o [Mon, 22 Oct 2007 14:09:05 +0000 (10:09 -0400)]
badblocks: Change unsigned long to blk_t and unsigned int, as appropriate
This will make it easier for us to support 64-bit block numbers when
the time comes. Not that running badblocks on a > 4TB machine is
anything I want to contemplate!
Theodore Ts'o [Mon, 22 Oct 2007 14:19:20 +0000 (10:19 -0400)]
badblocks: Factor out calls to strtoul to a helper function
The strtoul() function has a lot of messy error checking that needs to
be done; by factoring it out into one place we can make sure it's done
right in all of the places where it is called.
Theodore Ts'o [Mon, 22 Oct 2007 14:09:05 +0000 (10:09 -0400)]
badblocks: Change unsigned long to blk_t and unsigned int, as appropriate
This will make it easier for us to support 64-bit block numbers when
the time comes. Not that running badblocks on a > 4TB machine is
anything I want to contemplate!
Theodore Ts'o [Mon, 22 Oct 2007 12:51:39 +0000 (08:51 -0400)]
chattr: provide an exit code in case of failure and add -f flag
Fix chattr so that if there are errors, it will report it via a
non-zero exit code. It will now explicitly give errors when
attempting to set files that are not files or directories (which are
currently not supported under Linux). The -f flag will suppress error
messages from being printed, although the exit status will still be
non-zero.
Addresses-Red-Hat-Bugzilla: #180596
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu> Signed-off-by: Eric Sandeen <sandeen@redhat.com>
Theodore Ts'o [Mon, 22 Oct 2007 12:25:13 +0000 (08:25 -0400)]
libe2p: Change iterate_on_dir so that it counts non-zero returns
To allow error messages to be reflected up, if the callback function
returns a non-zero value, bump a counter and return the number of
times the callback function signals an error by returning a non-zero
status code.
Theodore Ts'o [Mon, 1 Oct 2007 13:18:54 +0000 (09:18 -0400)]
e2fsck: backup superblocks if key constants have changed
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.
ext2fs_dblist_dir_iterate() calls ext2fs_dblist_iterate(), which calls
ext2fs_process_dir_block(), which in turn calls the helper function
db_dir_proc() which calls callback function passed into
ext2fs_dblist_dir_iterate(). At each stage the conventions for
signalling requests to abort the iteration or to signal errors
changes, db_dir_proc() was not properly mapping the abort request back
to ext2fs_dblist_iterate().
Currently db_dir_proc() is ignoring errors (i/o errors or directory
block corrupt errors) from ext2fs_process_dir_block(), since the main
user of ext2fs_dblist_dir_iterate() is e2fsck, for which this is the
correct behavior. In the future ext2fs_dblist_dir_iterate() could
take a flag which would cause it to abort if
ext2fs_process_dir_block() returns an error; however, it's not clear
how useful this would be since we don't have a way of signalling the
exact nature of which block had the error, and the caller wouldn't
have a good way of knowing what percentage of the directory block list
had been processed. Ultimately this may not be the best interface for
applications that need that level of error reporting.
Thanks to Vladimir V. Saveliev <vs@clusterfs.com> for pointing out
this problem.
libblkid: Add more magic numbers that might mean there is a FAT filesystem
The FAT filesystem doesn't have its superblock with a set of magic
strings in a fixed location. Therefore, we must also check for the
FAT filesystem if it looks like we have an MBR at the beginning of the
partition. We previously checked if the first byte was a jump
instruction but that missed some USB disks with only one bootable
partition. Now we check for the MBR signature (0x55AA at offset 510)
as well as any partition where byte 0 is \351 or \353.
Signed-off-by: Karel Zak <kzak@redhat.com> Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
e2fsck: Don't mark the filesystem invalid because of time errors
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.
Work around lame Ubuntu init scripts / installer bugs
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:
e2fsck: If the superblock is corrupt, automatically retry with the backup sb
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.
Any attempt to open a filesystem with s_inode_size set to zero causes
a floating point exception. This is true for e2fsck, dumpe2fs,
e2image, etc. Fix ext2fs_open2() so that it returns the error code
EXT2_ET_CORRUPT_SUPERBLOCK instead of crashing.
Theodore Ts'o [Tue, 21 Aug 2007 02:55:33 +0000 (22:55 -0400)]
Use sscanf instead of atoi when parsing e2fsck options
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.
Theodore Ts'o [Sat, 11 Aug 2007 03:58:56 +0000 (23:58 -0400)]
Remove e2fsck's -s and -S options to byte-swap ancient PPC filesystems
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.
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.
Move the 32-bit specific bitmap code into gen_bitmap.c, and the
high-level interfaces into bitmaps.c. Eventually we'll move the
new-style bitmap code into gen_bitmap64.c, but first we need to
isolate the code with knowledge of the bitmap internals in one place
first.
In this patch we move allocation, free, copy, clear, set_padding, and
fudge_end function into gen_bitmap.c, and make sure that the bitmaps.c
and bitops.c no longer have any knowledge of the bitmap internals.
Eric Sandeen [Fri, 20 Jul 2007 21:50:26 +0000 (16:50 -0500)]
Fix test in ext2fs_check_desc() for inode table within block group
The test in ext2fs_check_desc() is off by one; if the inode table
goes all the way to the last block of the block group, it will
falsely assert that it has extended past it. The last block
of a range is start + len -1, not start + len.
You can create (valid) filesystems that will cause e2fsck to complain
via one of the following mkfs commands:
Properly calculate overhead in ext2fs_initialize()
For some odd geometries*, mkfs will try to allocate inode tables off
the end of the block group and fail, rather than warning that too
many inodes have been requested.
This is because when ext2fs_initialize calculates metadata overhead,
it is only adding in group descriptor blocks and the superblock
if the *last* bg contains them - but the first bg also has all of
the various metadata bits taking up space.
We need to calculate the overhead both for the first block group and
the last block groups separately, since the two different tests need
to know what the overheads are for those two cases, which may be
different.
(Note, the test here is a little funky; the expected output is
actually a mkfs failure - but a proper failure instead of the
allocator catching the problem at the last minute)
Addresses-Red-Hat-Bugzilla: #241767
Signed-off-by: Eric Sandeen <sandeen@redhat.com> Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Fix e2fsck segfault on very badly damaged filesystems
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.
Kalpak Shah [Mon, 9 Jul 2007 17:05:45 +0000 (13:05 -0400)]
e2fsck: Fix salvage_directory when the last entry's rec_len is too big
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.
Stop after the second '.' when parsing version numbers
Now that we are moving to x.y.z version number scheme for maintenance
releases, we ned to change ext2fs_parse_version_string and
blkid_parse_version_string to ignore the second period so we don't
have maintenance releases with a substantially bigger verison number
than the initial x.y release.
Fix bug which could cause libblkid to loop forever
When revalidating a partition where there is obsolete information in
/etc/blkid.tab, we end up freeing a the type tag without clearing
dev->bid_type, causing blkid_verify() to loop forever.
Fix a potential security problem if e2fsprogs is built as root (as
Gentoo does!). In addition fix the script and how it is called from
the configure script so that it does the right thing when
cross-compiling.
Fix bogus strip permission errors when building under Debian
When building the e2fsprogs dpkg's, the dh_strip command emits a large
number of error messages caused by the permissions not being right. So
run dh_fixperms before running dh_strip.
Compile the default mke2fs.conf into mke2fs program
People are getting surprised by mke2fs creating filesystems with
different defaults than earlier versions of mke2fs if mke2fs.conf is
not present. Having gotten two complaints about ramdisks getting
created by with 4k blocksizes which then blow up when the ramdisk is
mounted with a "Magic mismatch, very weird" error message from the
kernel, let's fix this by making sure mke2fs has a built-in version of
mke2fs.conf file. People can still override the built-in version of
mke2fs.conf by editing /etc/mke2fs.conf, but this maintains the
previous behavior.
projects / thirdparty / e2fsprogs.git / log
