Make subst more portable so it can deal with such oler systems that do
not have utimes(). Note that it is important that subst build
correctly without an autoconf-generated config.h (since that is what
happens on a cross-compile), as well as using whatever features are
available as determined by autoconf when doing a native build. We
currently assume the presence of utime(), but not utimes() or
futimes().
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
The man page description of the file system size thresholds used by
mke2fs to select a usage type when not otherwise specified by the -T
switch does not match the code.
Signed-off-by: Eric Whitney <enwlinux@gmail.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
large_file (> 2G) support has been around since at least kernel 2.4;
mkfs of any sufficiently large filesystem sets it "accidentally"
when the resize inode exceeds 2G. This leaves very small
filesystems lacking the feature, which potentially changes
their behavior & codepaths the first time a > 2G file gets
written.
There's really no reason to be making fresh filesystems which
strive to keep compatibility with 10 year old kernels; just
enable large_file at mkfs time. This is particularly obvious
for ext4 fielsystems, which set huge_file by default, but not
necessarily large_file.
If old-kernel compatibility is desired, mke2fs.conf can be
modified locally to remove the feature.
Signed-off-by: Eric Sandeen <sandeen@redhat.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Define the KERNEL_VERSION macro explicitly instead of using
<linux/version.h>, since it's not available when using dietlibc.
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Erase s_jnl_blocks when removing an external journal, or adding an
internal journal online. We can't add the backup for the internal
journal because we have no good way to get the indirect block or ETB
addresses, so the best we can do is hope that the user runs e2fsck,
which will correct that. We are motivated to erase during external
journal removal to state emphatically that there's no journal.
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reported-by: thomas_reardon@hotmail.com
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
We need to make sure PROFILED_LIBUUID and PROFILED_LIBBLKID are
defined when we are using the system uuid and blkid libraries.
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
If the reallocation of dir_info fails, we will eventually cause e2fsck
to fail with an internal error. So if the realloc fails, print a
message and bail out with a fatal error early when at the time of the
reallocation failure.
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Check to make sure the length of the name and value fields in the
extended attribute don't result in overrun the bounds of the inode.
Addresses-Coverity-Bug: #709517
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
If the starting partition offset is incompatible with the bigalloc
cluster size, complain and exit, instead of creating a file which
would have a logical to physical block mapping which breaks the
cluster alignment requirement.
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
The chattr(1) manpage now refers users to filesystem-specific
manpages for details on supported attributes, so add those to
ext4.5.
I've left out oddities like being able to set the compressed
or no-tail-packing flags, or setting data journaling on ext2.
That behavior seems like a bug, not a feature.
Signed-off-by: Eric Sandeen <sandeen@redhat.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
If the user does not specify the file system size, and the file does
not exist, give an error message like this:
The file /tmp/foo.img does not exist and no size was specified.
instead of this:
Creating regular file /tmp/foo.img
mke2fs: Device size reported to be zero. Invalid partition specified, or
partition table wasn't reread after running fdisk, due to
a modified partition being busy and in use. You may need to reboot
to re-read your partition table.
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
After we determine that we can't parse the array value as an integer,
we need to restore the square brackets to the field name, so that we
can find a match with block[IND], block[DIND], and block[TIND] in the
inode field table.
Reported-by: Jun He <jhe@cs.wisc.edu>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
The extent count calculation works correctly with the FIBMAP ioctl in
verbose (-v) mode, but without the verbose option, the calculation was
broken because we weren't properly updating the fm_ext data structures
in non-verbose mode.
Addresses-Launchpad-Bug: #1356496
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
The following tests were using md5sum: i_e2image, u_mke2fs, and
u_tune2fs. Convert them to use crcsum for better portability (not all
environments have md5sum; some might have sha1sum instead :-)
For our purposes crcsum is quite sufficient.
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
ext2fs_flush2() unconditionally writes the block group descriptors to
disk even if the underlying FS isn't marked dirty. This causes the
following error message on a fsck -n run:
e2fsck 1.43-WIP (09-Jul-2014)
Pass 1: Checking inodes, blocks, and sizes
Pass 2: Checking directory structure
Pass 3: Checking directory connectivity
Pass 4: Checking reference counts
Pass 5: Checking group summary information
Error writing block 2 (Attempt to write block to filesystem resulted in short write). Ignore error? no
Error writing block 2 (Attempt to write block to filesystem resulted in short write). Ignore error? no
Error writing file system info: Attempt to write block to filesystem resulted in short write
Since ext2fs_close2() only calls flush if the dirty flag is set,
modify e2fsck to exhibit the same behavior so that we don't spit out
write errors for a read only check.
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
A user who sees the message
***** REBOOT LINUX *****
or
***** FILE SYSTEM WAS MODIFIED *****
might think that e2fsck was complete even though we haven't finished
writing out the superblock or bitmap blocks, and then either forcibly
reboot or power cycle the box, or yank the USB key out while the
storage device is still being written (before e2fsck exits).
So rearrange the exit path of e2fsck so that we flush out the dirty
superblock/bg descriptors/bitmaps before we print the final message.
Also clean up this code so that the flow of control is easier to
understand, and add error checking to catch any errors (normally
caused by I/O errors writing to the disk) for these final writebacks.
Addresses-Debian-Bugs: #757543, #757544
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Cc: Dan Jacobson <jidanni@jidanni.org>
This test checks to make sure resize2fs can properly handle a file
system which started life as a normal ext4 file system and then was
grown to a size where meta_bg was enabled, and then shrunk back below
the point where the meta_bg format is still needed.
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
The test verifies that e2fsck can properly fix a file system where the
value of s_first_meta_bg in the superblock is larger than the number
of block group descriptors in the file system. E2fsck will fix this
by clearing the meta_bg feature.
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
When shrinking a file system, if the number block groups drops below
the point where we started using the meta_bg layout, disable the
meta_bg feature and set s_first_meta_bg to zero. This is necessary to
avoid creating an invalid/corrupted file system after the shrink.
Addresses-Debian-Bug: #756922
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Reported-by: Marcin Wolcendorf <antymat+debian@chelmska.waw.pl>
Tested-by: Marcin Wolcendorf <antymat+debian@chelmska.waw.pl>
If s_first_meta_bg is greater than the of number block group
descriptor blocks, then reading or writing the block group descriptors
will end up overruning the memory buffer allocated for the
descriptors. Fix this by limiting first_meta_bg to no more than
fs->desc_blocks. This doesn't correct the bad s_first_meta_bg value,
but it avoids causing the e2fsprogs userspace programs from
potentially crashing.
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Theodore Ts'o