Whamcloud - gitweb
Sharuzzaman Ahmat Raslan [Wed, 25 Nov 2020 03:36:54 +0000 (22:36 -0500)]
po: update ms.po (from translationproject.org)
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Theodore Ts'o [Thu, 1 Oct 2020 21:13:27 +0000 (17:13 -0400)]
Merge branch 'maint' into next
Xiao Yang [Tue, 28 Jul 2020 05:33:21 +0000 (13:33 +0800)]
chattr/lsattr: Support dax attribute
Use the letter 'x' to set/get dax attribute on a directory/file.
Signed-off-by: Xiao Yang <yangx.jy@cn.fujitsu.com>
Reviewed-by: Andreas Dilger <adilger@dilger.ca>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Hongxu Jia [Wed, 22 Jul 2020 01:25:03 +0000 (18:25 -0700)]
mke2fs: fix up check for hardlinks always false if inode > 0xFFFFFFFF
While file has a large inode number (> 0xFFFFFFFF), mkfs.ext4 could
not parse hardlink correctly.
Prepare three hardlink files for mkfs.ext4
$ ls -il rootfs_ota/a rootfs_ota/boot/b rootfs_ota/boot/c
11026675846 -rw-r--r-- 3 hjia users 0 Jul 20 17:44 rootfs_ota/a
11026675846 -rw-r--r-- 3 hjia users 0 Jul 20 17:44 rootfs_ota/boot/b
11026675846 -rw-r--r-- 3 hjia users 0 Jul 20 17:44 rootfs_ota/boot/c
$ truncate -s 1M rootfs_ota.ext4
$ mkfs.ext4 -F -i 8192 rootfs_ota.ext4 -L otaroot -U
fd5f8768-c779-4dc9-adde-
165a3d863349 -d rootfs_ota
$ mkdir mnt && sudo mount rootfs_ota.ext4 mnt
$ ls -il mnt/a mnt/boot/b mnt/boot/c
12 -rw-r--r-- 1 hjia users 0 Jul 20 17:44 mnt/a
14 -rw-r--r-- 1 hjia users 0 Jul 20 17:44 mnt/boot/b
15 -rw-r--r-- 1 hjia users 0 Jul 20 17:44 mnt/boot/c
After applying this fix
$ ls -il mnt/a mnt/boot/b mnt/boot/c
12 -rw-r--r-- 3 hjia users 0 Jul 20 17:44 mnt/a
12 -rw-r--r-- 3 hjia users 0 Jul 20 17:44 mnt/boot/b
12 -rw-r--r-- 3 hjia users 0 Jul 20 17:44 mnt/boot/c
Since commit [
382ed4a1 e2fsck: use proper types for variables][1]
applied, it used ext2_ino_t instead of ino_t for referencing inode
numbers, but the type of is_hardlink's `ino' should not be instead,
The ext2_ino_t is 32bit, if inode > 0xFFFFFFFF, its value will be
truncated.
Add a debug printf to show the value of inode, when it check for hardlink
files, it will always return false if inode > 0xFFFFFFFF
|--- a/misc/create_inode.c
|+++ b/misc/create_inode.c
|@@ -605,6 +605,7 @@ static int is_hardlink(struct hdlinks_s *hdlinks, dev_t dev, ext2_ino_t ino)
| {
| int i;
|
|+ printf("%s %d, %lX, %lX\n", __FUNCTION__, __LINE__, hdlinks->hdl[i].src_ino, ino);
| for (i = 0; i < hdlinks->count; i++) {
| if (hdlinks->hdl[i].src_dev == dev &&
| hdlinks->hdl[i].src_ino == ino)
Here is debug message:
is_hardlink 608,
2913DB886,
913DB886
The length of ext2_ino_t is 32bit (typedef __u32 __bitwise ext2_ino_t;),
and ino_t is 64bit on 64bit system (such as x86-64), recover `ino' to ino_t.
[1] https://git.kernel.org/pub/scm/fs/ext2/e2fsprogs.git/commit/?id=
382ed4a1c2b60acb9db7631e86dda207bde6076e
Signed-off-by: Hongxu Jia <hongxu.jia@windriver.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Jan Kara [Thu, 9 Jul 2020 14:40:57 +0000 (16:40 +0200)]
mke2fs: Warn if fs block size is incompatible with DAX
If we are creating filesystem on DAX capable device, warn if set block
size is incompatible with DAX to give admin some hint why DAX might not
be available.
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Florian Schmaus [Tue, 7 Jul 2020 08:27:30 +0000 (10:27 +0200)]
e4crypt: if salt is explicitly provided to add_key, then use it
Providing -S and a path to 'add_key' previously exhibited an
unintuitive behavior: instead of using the salt explicitly provided by
the user, e4crypt would use the salt obtained via
EXT4_IOC_GET_ENCRYPTION_PWSALT on the path. This was because
set_policy() was still called with NULL as salt.
With this change we now remember the explicitly provided salt (if any)
and use it as argument for set_policy().
Eventually
e4crypt add_key -S s:my-spicy-salt /foo
will now actually use 'my-spicy-salt' and not something else as salt
for the policy set on /foo.
Signed-off-by: Florian Schmaus <flo@geekplace.eu>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Andreas Dilger [Wed, 17 Jun 2020 11:40:49 +0000 (05:40 -0600)]
tune2fs: reset MMP state on error exit
If tune2fs cannot perform the requested change, ensure that the MMP
block is reset to the unused state before exiting. Otherwise, the
filesystem will be left with mmp_seq = EXT4_MMP_SEQ_FSCK set, which
prevents it from being mounted afterward:
EXT4-fs warning (device dm-9): ext4_multi_mount_protect:311:
fsck is running on the filesystem
Add a test to try some failed tune2fs operations and verify that the
MMP block is left in a clean state afterward.
Lustre-bug-id: https://jira.whamcloud.com/browse/LU-13672
Signed-off-by: Andreas Dilger <adilger@whamcloud.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Lukas Czerner [Fri, 5 Jun 2020 08:14:42 +0000 (10:14 +0200)]
ext2fs: remove unused variable 'left'
Signed-off-by: Lukas Czerner <lczerner@redhat.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Lukas Czerner [Fri, 5 Jun 2020 08:14:41 +0000 (10:14 +0200)]
e2fsck: use the right conversion specifier in e2fsck_allocate_memory()
Signed-off-by: Lukas Czerner <lczerner@redhat.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Lukas Czerner [Fri, 5 Jun 2020 08:14:40 +0000 (10:14 +0200)]
e2fsck: use size_t instead of int in string_copy()
len argument in string_copy() is int, but it is used with malloc(),
strlen(), strncpy() and some callers use sizeof() to pass value in. So
it really ought to be size_t rather than int. Fix it.
Signed-off-by: Lukas Czerner <lczerner@redhat.com>
Reviewed-by: Andreas Dilger <adilger@dilger.ca>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Theodore Ts'o [Wed, 30 Sep 2020 21:18:35 +0000 (17:18 -0400)]
tests: remove unnecessary uncompressed image file
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Theodore Ts'o [Wed, 26 Aug 2020 20:29:29 +0000 (16:29 -0400)]
libext2fs: fix potential buffer overrun in __get_dirent_tail()
If the file system is corrupted, there is a potential of a read-only
buffer overrun. Fortunately, we don't actually use the result of that
pointer dereference, and the overrun is at most 64k.
Google-Bug-Id: #
158564737
Fixes:
eb88b751745b ("libext2fs: make ext2fs_dirent_has_tail() more strict")
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Theodore Ts'o [Thu, 18 Jun 2020 01:43:37 +0000 (21:43 -0400)]
debugfs: fix building rdebugfs (with READ_ONLY define)
Fix bitrot for building a restricted version of debugfs, which does
not require read/write access to the file system, and which only
allows access to the file system metadata.
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Theodore Ts'o [Mon, 18 May 2020 03:05:11 +0000 (23:05 -0400)]
libext2fs: retry reading superblock on open when checksum is bad
When opening a file system which is mounted, it's possible that when
ext2fs_open2() is racing with the kernel modifying the orphaned inode
list, the superblock's checksum could be incorrect. So retry reading
the superblock in the hopes that the problem will self-correct.
Google-Bug-Id:
151453112
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Theodore Ts'o [Sat, 25 Apr 2020 15:41:24 +0000 (11:41 -0400)]
libext2fs: batch calls to ext2fs_zero_blocks2()
When allocating blocks for an indirect block mapped file, accumulate
blocks to be zero'ed and then call ext2fs_zero_blocks2() to zero them
in large chunks instead of block by block.
This significantly speeds up mkfs.ext3 since we don't send a large
number of ZERO_RANGE requests to the kernel, and while the kernel does
batch write requests, it is not batching ZERO_RANGE requests. It's
more efficient to batch in userspace in any case, since it avoids
unnecessary system calls.
Reported-by: Mario Schuknecht <mario.schuknecht@dresearch-fe.de>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Theodore Ts'o [Fri, 10 Apr 2020 04:30:52 +0000 (00:30 -0400)]
e2fsck: fix off-by-one check when validating depth of an htree
Fixes:
3f0cf6475399 ("e2fsprogs: add support for 3-level htree")
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Michael Forney [Sun, 5 Apr 2020 04:53:46 +0000 (21:53 -0700)]
libext2fs: avoid pointer arithmetic on `void *`
The pointer operand to the binary `+` operator must be to a complete
object type.
Signed-off-by: Michael Forney <mforney@mforney.org>
Reviewed-by: Andreas Dilger <adilger@dilger.ca>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Eric Biggers [Wed, 1 Apr 2020 20:32:39 +0000 (13:32 -0700)]
tune2fs.8: document the stable_inodes feature
Signed-off-by: Eric Biggers <ebiggers@google.com>
Reviewed-by: Andreas Dilger <adilger@dilger.ca>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Eric Biggers [Wed, 1 Apr 2020 20:32:38 +0000 (13:32 -0700)]
ext4.5: document the stable_inodes feature
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Eric Biggers [Wed, 1 Apr 2020 20:32:37 +0000 (13:32 -0700)]
tune2fs: prevent stable_inodes feature from being cleared
Similar to encrypt and verity, once the stable_inodes feature has been
enabled there may be files anywhere on the filesystem that require this
feature. Therefore, in general it's unsafe to allow clearing it. Don't
allow tune2fs to do so. Like encrypt and verity, it can still be
cleared with debugfs if someone really knows what they're doing.
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Eric Biggers [Wed, 1 Apr 2020 20:32:36 +0000 (13:32 -0700)]
tune2fs: prevent changing UUID of fs with stable_inodes feature
The stable_inodes feature is intended to indicate that it's safe to use
IV_INO_LBLK_64 encryption policies, where the encryption depends on the
inode numbers and thus filesystem shrinking is not allowed. However
since inode numbers are not unique across filesystems, the encryption
also depends on the filesystem UUID, and I missed that there is a
supported way to change the filesystem UUID (tune2fs -U).
So, make 'tune2fs -U' report an error if stable_inodes is set.
We could add a separate stable_uuid feature flag, but it seems unlikely
it would be useful enough on its own to warrant another flag.
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Jan Kara [Mon, 30 Mar 2020 09:09:32 +0000 (11:09 +0200)]
ext2fs: fix off-by-one in dx_grow_tree()
There is an off-by-one error in dx_grow_tree() when checking whether we
can add another level to the tree. Thus we can grow tree too much
leading to possible crashes in the library or corrupted filesystem. Fix
the bug.
Signed-off-by: Jan Kara <jack@suse.cz>
Reviewed-by: Lukas Czerner <lczerner@redhat.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Jan Kara [Mon, 30 Mar 2020 09:09:31 +0000 (11:09 +0200)]
ext2fs: fix error checking in dx_link()
dx_lookup() uses errcode_t return values. As such anything non-zero is
an error, not values less than zero. Fix the error checking to avoid
crashes on corrupted filesystems.
Signed-off-by: Jan Kara <jack@suse.cz>
Reviewed-by: Lukas Czerner <lczerner@redhat.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Theodore Ts'o [Sat, 28 Mar 2020 21:56:56 +0000 (17:56 -0400)]
Teach makefiles to build all static programs using the target all-static
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Theodore Ts'o [Sat, 28 Mar 2020 20:51:52 +0000 (16:51 -0400)]
ext4: add support for printing the error code associated with an error
The error code allows the kernel to bucket the possible cause of an
ext4 corruption by Unix errno codes (e.g., EIO, EFSBADCRC, ESHUTDOWN,
etc.)
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Theodore Ts'o [Mon, 23 Mar 2020 03:56:14 +0000 (23:56 -0400)]
tests: use grep -E for better portability in r_inline_xattr
Since r_inline_xattr is using an extended regexp, we need grep -E on
some implementations of grep.
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Theodore Ts'o [Mon, 23 Mar 2020 03:47:12 +0000 (23:47 -0400)]
e2fsck: fix various gcc -Wall nits
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Theodore Ts'o [Mon, 23 Mar 2020 03:30:14 +0000 (23:30 -0400)]
Use ext2_loff_t instead of loff_t
The loff_t type is a glibc'ism and is not fully portable. Use
ext2_loff_t instead.
Fixes:
382ed4a1c2b6 ("e2fsck: use proper types for variables")
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Reported-by: Matthias Andree <matthias.andree@gmx.de>
Theodore Ts'o [Sun, 22 Mar 2020 02:34:30 +0000 (22:34 -0400)]
Merge tag 'v1.45.6' into next
v1.45.6
Theodore Ts'o [Sat, 21 Mar 2020 03:51:07 +0000 (23:51 -0400)]
Update release notes, etc., for the 1.45.6 release
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Jaegeuk Kim [Wed, 12 Feb 2020 19:34:49 +0000 (11:34 -0800)]
AOSP: tune2fs, resize2fs: make ramdisk binaries.
Bug:
149391799
Change-Id: I5183755915710e28a603e3f718f16813ea9991a0
Signed-off-by: Jaegeuk Kim <jaegeuk@google.com>
From AOSP commit:
a13a88d0d557a396f63702fb8db008487e2384d7
David Anderson [Fri, 14 Feb 2020 20:44:48 +0000 (12:44 -0800)]
AOSP: e2fsdroid: Don't skip unusable blocks in BaseFS.
Currently, basefs_allocator will iterate through blocks owned by an
inode until it finds a block that is free. This effectively ignores the
logical to physical block mapping, which can lead to a bigger delta in
the final image.
An example of how this can happen is if the BaseFS has a deduplicated
block (D), that is not deduplicated in the new image:
Old image: 1 2 3 D 4 5
New image: 1 2 3 ? 4 5
If the allocator sees that "D" is not usable, and skips to block "4",
we will have a non-ideal assignment.
Bad image: 1 2 3 4 5 ?
This patch refactors get_next_block() to acquire at most one block. It's
called a single time, and then only called in a loop if absolutely no
blocks can be acquired from anywhere else.
In a Virtual A/B simulation, this reduces the COW snapshot size by about
90MB.
Bug:
139201772
Test: manual test
Change-Id: I354f0dee1ee191dba0e1f90491ed591dba388f7f
From AOSP commit:
a495b54f89b2ec0e46be8e3564e4852c6434687c
David Anderson [Fri, 14 Feb 2020 03:20:32 +0000 (19:20 -0800)]
AOSP: e2fsdroid: Fix logical block sequencing in BaseFS.
By iterating over blocks to write BaseFS, holes in the extent tree are
skipped. This is problematic because the purpose of BaseFS is to
preserve the logical to physical block assignment between builds. By not
preserving the location of holes, the assignment can be incorrect.
For example, consider the following block list for a file:
1 2 3 0 4 5
If this is recorded as:
1 2 3 4 5
If the first block changes to a hole, the intended mapping will not be
preserved at all:
0 1 2 0 3
This patch makes two changes to e2fsdroid to fix this. The first change
is that holes are now recorded in BaseFS, by iterating over the extent
tree rather than the block list, and inserting zeroes where appropriate.
The second change is that the block allocator now recognizes when blocks
have been skipped (either to deduplication or to holes), and skips the
same number of logical blocks in BaseFS as well.
In a Virtual A/B simulation, this reduces the COW snapshot size by
approximately 100MB.
Bug:
139201772
Test: m target-files-package, inspect .map files
From AOSP commit:
d391f3bf38cbe51718d5c3c0bb3e72b1a9978625
David Anderson [Wed, 29 Jan 2020 23:31:14 +0000 (15:31 -0800)]
AOSP: e2fsdroid: Properly free the dedup block map.
When BaseFS specifies the same block for two files, it gets added to a
separate "dedup" bitmap, and removed from the free block bitmap. If the
new build does not use every block in this bitmap, there will be an
inconsistency: the block bitmap marks blocks as in-use when they are
actually free. Although this doesn't matter for AOSP's read-only file
systems, it does cause e2fsck to complain, which breaks the build.
Fix the inconsistency by properly freeing all unused blocks within the
dedup block set.
Bug:
139201772
Test: build AOSP using BaseFS
Change-Id: I6b6511eb713a56fec932f1d5668f1766d64d9479
From AOSP commit:
346bee6f8b97aefe7714688f738606c116099fbc
Alessio Balsini [Fri, 24 Jan 2020 16:04:44 +0000 (16:04 +0000)]
AOSP: Build e2freefrag
Enable the build of e2freefrag to monitor the free space fragmentation
in ext2/3/4 filesystems.
Bug:
146078546
Test: m + e2freefrag on device
Change-Id: Ia56e443a789ae881a03bdaeae1093567e1736c4c
Signed-off-by: Alessio Balsini <balsini@google.com>
From AOSP commit:
ab77f6c79f3dab697cd56ad3b793e7d555ac9415
Elliott Hughes [Thu, 23 Jan 2020 23:44:10 +0000 (15:44 -0800)]
AOSP: Add -e2fsprogs to the e2fsprogs chattr and lsattr.
We want to start shipping the toybox chattr and lsattr on the device all
the time, so the build system rightly complains that then we'd have two
modules with the same name.
I went with a suffix rather than a prefix so that tab completion works
for folks still wanting to use the e2fsprogs versions.
Bug: http://b/
147769529
Test: builds
Change-Id: Ib904fa6c709d29ce709302c61e452383c02cb9a3
From AOSP commit:
8525a455e7410461560a99a42feb0dbfabab5c8e
Yifan Hong [Wed, 22 Jan 2020 00:44:20 +0000 (16:44 -0800)]
AOSP: Make ramdisk_available.
Test: pass
Bug:
147347110
Change-Id: Ie800ba1b56773dcc1b6563c4f19c27eccb9ffc1a
From AOSP commit:
f5a8e8fdefd78deae971a475a7fa43734eef205e
Kousik Kumar [Fri, 10 Jan 2020 00:15:30 +0000 (16:15 -0800)]
AOSP: Change #define to _BLKID_TYPES_H
blkid_types.h and ext_types.h having the exact same content results in
mismatches in remote RBE builds. Given blkid_types.h is actually
supposed to be different, changing this to remove the mismatch.
Test: Ran a build, and all e2fsprogs mismatches went away between
local/remote.
Change-Id: I63ab1719ee1d0ccd28907f0bc99531260251fa99
From AOSP commit:
ec10b513c283706f984edeec47301b0661f7d283
Dario Freni [Mon, 6 Jan 2020 15:57:14 +0000 (15:57 +0000)]
AOSP: Allow resize2fs to compile with BUILD_HOST_static
Bug:
144477678
Test: BUILD_HOST_static=1 m resize2fs; m resize2fs
Change-Id: I0986deccfe496153e662dcc3cc2fb1ffb6973c21
From AOSP commit:
2c767b86591c64cd7b84c5619e8d8b8a0afd557e
Dario Freni [Thu, 2 Jan 2020 12:59:39 +0000 (12:59 +0000)]
AOSP: Allow debugfs_static to be compiled as host tool.
Bug:
144477678
Test: m debugfs_static
Change-Id: I7c360a2a381f8508578d14c32bbb280f386dd925
From AOSP commit:
742bb05a401eb2feb6caaee1c8d66fc1c37eef77
Sharuzzaman Ahmat Raslan [Sat, 21 Mar 2020 02:31:25 +0000 (22:31 -0400)]
po: update ms.po (from translationproject.org)
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Theodore Ts'o [Sat, 21 Mar 2020 01:35:03 +0000 (21:35 -0400)]
misc: add text describing the impact of an inode size < 128 bytes in man pages
Addresses-Debian-Bug: #953493
Addresses-Debian-Bug: #953494
Addresses-Debian-Bug: #951808
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Theodore Ts'o [Fri, 20 Mar 2020 21:57:38 +0000 (17:57 -0400)]
libe2p: add a thread-safe variant of e2p_feature2string
This commit adds the function e2p_feature_to_string() which allows the
caller to pass in a preallocated buffer.
Google-Bug-Id:
16978603
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Theodore Ts'o [Fri, 20 Mar 2020 19:24:18 +0000 (15:24 -0400)]
libext2fs: fix the {set_get}_bitmap_range functions when bitmap->start > 7
The bitmap array's set/get bitmap_range functions were not subtracting
out bitmap->start. This doesn't matter for normal file systems, since
the bitmap->start is zero or one, and the passed-in starting range is
a multiple of eight, and the starting range is then divided by 8.
But with a non-standard/fuzzed file system, bitmap->start could be
significantly larger, and this could then lead to a array out of
bounds memory reference.
Google-Bug-Id:
147849134
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Jan Kara [Thu, 13 Feb 2020 10:15:56 +0000 (11:15 +0100)]
e2fsck: clarify overflow link count error message
When directory link count is set to overflow value (1) but during pass 4
we find out the exact link count would fit, we either silently fix this
(which is not great because e2fsck then reports the fs was modified but
output doesn't indicate why in any way), or we report that link count is
wrong and ask whether we should fix it (in case -n option was
specified). The second case is even more misleading because it suggests
non-trivial fs corruption which then gets silently fixed on the next
run. Similarly to how we fix up other non-problems, just create a new
error message for the case directory link count is not overflown anymore
and always report it to clarify what is going on.
Reviewed-by: Andreas Dilger <adilger@dilger.ca>
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
(cherry picked from commit
4ebce13292f54c96f43dcb1bd1d5b8df5dc8749d)
Theodore Ts'o [Mon, 16 Mar 2020 11:59:08 +0000 (07:59 -0400)]
Merge branch 'maint' into next
Jan Kara [Thu, 13 Feb 2020 10:16:02 +0000 (11:16 +0100)]
tune2fs: update dir checksums when clearing dir_index feature
When clearing dir_index feature while metadata_csum is enabled, we have
to rewrite checksums of all indexed directories to update checksums of
internal tree nodes.
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Jan Kara [Thu, 13 Feb 2020 10:16:01 +0000 (11:16 +0100)]
tests: add test to excercise indexed directories with metadata_csum
Indexed directories have somewhat different format when metadata_csum is
enabled. Add test to excercise linking in indexed directories and e2fsck
rehash code in this case.
Reviewed-by: Andreas Dilger <adilger@dilger.ca>
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Jan Kara [Thu, 13 Feb 2020 10:16:00 +0000 (11:16 +0100)]
tests: modify f_large_dir test to excercise indexed dir handling
Modify f_large_dir test to create indexed directory and create entries
in it. That way the new code in ext2fs_link() for addition of entries
into indexed directories gets executed including various special cases
when growing htree.
Reviewed-by: Andreas Dilger <adilger@dilger.ca>
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Jan Kara [Thu, 13 Feb 2020 10:15:59 +0000 (11:15 +0100)]
ext2fs: implement dir entry creation in htree directories
Implement proper creation of new directory entries in htree directories
in ext2fs_link(). So far we just cleared EXT2_INDEX_FL and treated
directory as unindexed however this results in mismatched checksums if
metadata checksums are in use because checksums are placed in different
places depending on htree node type.
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Jan Kara [Thu, 13 Feb 2020 10:15:58 +0000 (11:15 +0100)]
ext2fs: update allocation info earlier in ext2fs_mkdir() and ext2fs_symlink()
Currently, ext2fs_mkdir() and ext2fs_symlink() update allocation bitmaps
and other information only close to the end of the function, in
particular after calling to ext2fs_link(). When ext2fs_link() will
support indexed directories, it will also need to allocate blocks and
that would cause filesystem corruption in case allocation info isn't
properly updated. So make sure ext2fs_mkdir() and ext2fs_symlink()
update allocation info before calling into ext2fs_link().
[ Added error handling so the calls to ext2fs_{block,inode}_alloc_stats()
can be undone if the newly created directory or symlink can not be linked
into the directory. -- TYT ]
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Theodore Ts'o [Sun, 15 Mar 2020 04:56:01 +0000 (00:56 -0400)]
debian: drop libattr1-dev from the build dependencies list
The libattr has stopped providing attr/xattr.h; we now use
sys/xattr.h. So there is no longer any reason to require that the
libattr1-dev package be present when building e2fsprogs, so drop it.
Addresses-Debian-Bug: #953926
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Theodore Ts'o [Sun, 15 Mar 2020 04:26:22 +0000 (00:26 -0400)]
e2fsck: fix "make check" when using static libraries
Fixes:
70303df16ca6 ("e2fsck: consistently use ext2fs_get_mem()")
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Theodore Ts'o [Sun, 15 Mar 2020 03:24:39 +0000 (23:24 -0400)]
libext2fs: make ext2fs_dirent_has_tail() more strict
Previously ext2fs_dirent_has_tail() would return true if the directory
was corrupted. If the directory is corrupted, then by definition it
doesn't have a valid checksum tail.
(This fixes a big-endian failure on the master branch.)
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Sawood Alam [Tue, 10 Mar 2020 02:47:29 +0000 (22:47 -0400)]
misc: fix typos in chattr's man page
Plural form "directories" should be used along with "files".
"id's" should be "ids" (i.e., plural form, not apostrophe).
"much" should "must".
Signed-off-by: Sawood Alam <ibnesayeed@gmail.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Pino Toscano [Mon, 9 Mar 2020 16:36:10 +0000 (12:36 -0400)]
mke2fs.conf: remove options.fname_encoding
Introduced with commit
e7236a9476cd1fa5296fbc4aa573b36426901a08,
it was later renamed to encoding, and turned into a fs_type-only
option with commit
28887533bb64db318e74c38cd9c0ad6d0bb2ced2.
Hence, remove an option that does not exist in the default
configuration.
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Jan Kara [Thu, 13 Feb 2020 10:15:57 +0000 (11:15 +0100)]
e2fsck: fix indexed dir rehash failure with metadata_csum enabled
E2fsck directory rehashing code can fail with ENOSPC due to a bug in
ext2fs_htree_intnode_maxrecs() which fails to take metadata checksum
into account and thus e.g. e2fsck can decide to create 1 indirect level
of index tree when two are actually needed. Fix the logic to account for
metadata checksum.
Reviewed-by: Andreas Dilger <adilger@dilger.ca>
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Jan Kara [Thu, 13 Feb 2020 10:15:56 +0000 (11:15 +0100)]
e2fsck: clarify overflow link count error message
When directory link count is set to overflow value (1) but during pass 4
we find out the exact link count would fit, we either silently fix this
(which is not great because e2fsck then reports the fs was modified but
output doesn't indicate why in any way), or we report that link count is
wrong and ask whether we should fix it (in case -n option was
specified). The second case is even more misleading because it suggests
non-trivial fs corruption which then gets silently fixed on the next
run. Similarly to how we fix up other non-problems, just create a new
error message for the case directory link count is not overflown anymore
and always report it to clarify what is going on.
Reviewed-by: Andreas Dilger <adilger@dilger.ca>
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Theodore Ts'o [Sat, 7 Mar 2020 18:13:55 +0000 (13:13 -0500)]
Merge branch 'maint' into next
Lukas Czerner [Tue, 3 Mar 2020 13:53:48 +0000 (14:53 +0100)]
libext2fs: check open(O_EXCL) first in ismounted.c
Currently the ext2fs_check_mount_point() will use the open(O_EXCL) check
on linux after all the other checks are done. However it is not
necessary to check mntent if open(O_EXCL) succeeds because it means that
the device is not mounted.
Moreover the commit
ea4d53b7 introduced a regression where a following
set of commands fails:
vgcreate mygroup /dev/sda
lvcreate -L 1G -n lvol0 mygroup
mkfs.ext4 /dev/mygroup/lvol0
mount /dev/mygroup/lvol0 /mnt
lvrename /dev/mygroup/lvol0 /dev/mygroup/lvol1
lvcreate -L 1G -n lvol0 mygroup
mkfs.ext4 /dev/mygroup/lvol0 <<<--- This fails
It fails because it thinks that /dev/mygroup/lvol0 is mounted because
the device name in /proc/mounts is not updated following the lvrename.
Move the open(O_EXCL) check before the mntent check and return
immediatelly if the device is not busy.
Fixes:
ea4d53b7 ("libext2fs/ismounted.c: check device id in advance to skip false device names")
Signed-off-by: Lukas Czerner <lczerner@redhat.com>
Reported-by: Zdenek Kabelac <zkabelac@redhat.com>
Reported-by: Karel Zak <kzak@redhat.com>
Reviewed-by: Carlos Maiolino <cmaiolino@redhat.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Theodore Ts'o [Sat, 7 Mar 2020 17:35:48 +0000 (12:35 -0500)]
mke2fs: fix permissions setting with "mke2fs -d /path/files"
Set the directory for directories in cases where the owner permissions
is not rwx. This was reported[1] by Robert Yang but we are using a
different approach to fixing the issue.
[1] https://lore.kernel.org/r/
1582542522-97508-1-git-send-email-liezhi.yang@windriver.com
Also set the permissions in a more portable way by making a
distinction between the host OS's permissions stats and Linux's
permissions. We still assume the low 12 bits are the historical Unix
assignments, but we don't assume ST_IFMT bits are the same as Linux's.
Reported-by: Robert Yang <liezhi.yang@windriver.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Andreas Dilger [Fri, 21 Feb 2020 21:40:56 +0000 (14:40 -0700)]
libext2fs: don't use O_DIRECT for files on tmpfs
If a filesystem image is on tmpfs, opening it with O_DIRECT for
reading the MMP will fail. This is unnecessary, since the image
file can't really be open on another node at this point. If the
open with O_DIRECT fails, retry without it when plausible.
Remove the special-casing of tmpfs from the mmp test cases.
Change-Id: I41f4b31657b06f62f10be8d6e524d303dd36a321
Signed-off-by: Andreas Dilger <adilger@whamcloud.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Andreas Dilger [Wed, 12 Feb 2020 01:07:21 +0000 (18:07 -0700)]
e2fsck: avoid overflow with very large dirs
In alloc_size_dir() it multiples signed ints when allocating the
buffer for rehashing an htree-indexed directory. This will overflow
when the directory size is above 4GB, which is possible with largedir
directories having about 100M entries, assuming an average 3/4 leaf
fullness and 24-byte filenames, or fewer with longer filenames.
The same problem exisgs in get_next_block().
Similarly, the out_dir struct used a signed int for the number of
blocks in the directory, which may result in a negative size if the
directory is over 2GB (about 50M entries or fewer).
Use appropriate unsigned variables for block counts, and use larger
types for calculating the byte count for memory offsets/sizes.
Such large directories not been seen yet, but are not too far away.
The ext2fs_get_array() function will properly calculate the needed
memory allocation, and detect overflow on 32-bit systems.
Add ext2fs_resize_array() to do the same for array resize.
Signed-off-by: Andreas Dilger <adilger@whamcloud.com>
Lustre-bug-id: https://jira.whamcloud.com/browse/LU-13197
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Andreas Dilger [Fri, 7 Feb 2020 01:09:46 +0000 (18:09 -0700)]
misc: handle very large files with filefrag
Avoid overflowing the column-width calc printing files over 4B blocks.
Document the [KMG] suffixes for the "-b <blocksize>" option.
The blocksize is limited to at most 1GiB blocksize to avoid shifting
all extents down to zero GB in size. Even the use of 1GB blocksize
is unlikely, but non-ext4 filesystems may use multi-GB extents.
Signed-off-by: Andreas Dilger <adilger@dilger.ca>
Lustre-bug-id: https://jira.whamcloud.com/browse/LU-13197
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Andreas Dilger [Fri, 7 Feb 2020 01:09:45 +0000 (18:09 -0700)]
e2fsck: consistently use ext2fs_get_mem()
Consistently use ext2fs_get_mem() and ext2fs_free_mem() instead of
calling malloc() and free() directly in e2fsck. In several places
it is possible to use ext2fs_get_memzero() instead of explicitly
calling memset() on the memory afterward.
This is just a code cleanup, and does not fix any specific bugs.
[ Fix up library dependencies in e2fsck/Makefile.in to fix "make
check" breakages. -- TYT ]
Signed-off-by: Andreas Dilger <adilger@whamcloud.com>
Lustre-bug-id: https://jira.whamcloud.com/browse/LU-13197
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Andreas Dilger [Fri, 7 Feb 2020 01:09:44 +0000 (18:09 -0700)]
e2fsck: fix overflow if more than 4B inodes
Even though we don't have support for filesystems with over 4B inodes
in the current e2fsprogs, this may happen in the future. There are
latent overflow bugs when calculating the number of inodes in the
filesystem that can trivially be fixed now, rather than waiting for
them to be hit at some point in the future. The block number calcs
are already correct in this code.
Signed-off-by: Andreas Dilger <adilger@dilger.ca>
Lustre-bug-id: https://jira.whamcloud.com/browse/LU-13197
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Andreas Dilger [Fri, 7 Feb 2020 01:09:43 +0000 (18:09 -0700)]
debugfs: print inode numbers as unsigned
Print inode numbers as unsigned values, to avoid printing negative
numbers for inodes above 2B.
Flags should be printed as hex instead of signed decimal values.
Signed-off-by: Andreas Dilger <adilger@whamcloud.com>
Lustre-bug-id: https://jira.whamcloud.com/browse/LU-13197
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Andreas Dilger [Fri, 7 Feb 2020 01:09:42 +0000 (18:09 -0700)]
debugfs: allow comment lines in command file
Allow comment lines with '#' at the start of the line in the command
file passed in to debugfs via the "-f" option or from standard input.
Signed-off-by: Andreas Dilger <adilger@whamcloud.com>
Lustre-bug-id: https://jira.whamcloud.com/browse/LU-13197
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Andreas Dilger [Fri, 7 Feb 2020 01:09:41 +0000 (18:09 -0700)]
e2fsck: reduce memory usage for many directories
Pack struct dx_dir_info and dx_dirblock_info properly in memory, to
avoid holes, and fields are not larger than necessary. This reduces
the memory needed for each hashed dir, according to pahole(1) from:
struct dx_dir_info {
/* size: 32, cachelines: 1, members: 6 */
/* sum members: 26, holes: 1, sum holes: 2 */
/* padding: 4 */
};
struct dx_dirblock_info {
/* size: 56, cachelines: 1, members: 9 */
/* sum members: 48, holes: 2, sum holes: 8 */
/* last cacheline: 56 bytes */
};
to 8 bytes less for each directory and directory block, and leaves
space for future use if needed (e.g. larger numblocks):
struct dx_dir_info {
/* size: 24, cachelines: 1, members: 6 */
/* sum members: 20, holes: 1, sum holes: 4 */
/* bit holes: 1, sum bit holes: 7 bits */
};
struct dx_dirblock_info {
/* size: 48, cachelines: 1, members: 9 */
};
Signed-off-by: Andreas Dilger <adilger@whamcloud.com>
Lustre-bug-id: https://jira.whamcloud.com/browse/LU-13197
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Andreas Dilger [Fri, 7 Feb 2020 01:09:40 +0000 (18:09 -0700)]
e2fsck: avoid mallinfo() if over 2GB allocated
Don't use mallinfo() for determining the amount of memory used if it
is over 2GB. Otherwise, the signed ints used by this interface can
can overflow and return garbage values. This makes the actual amount
of memory used by e2fsck misleading and hard to determine.
Instead, use brk() to get the total amount of memory allocated, and print
this if the more detailed mallinfo() information is not suitable for use.
There does not appear to be a mallinfo64() variant of this function.
There does appear to be an abomination named malloc_info() that writes
XML-formatted malloc stats to a FILE stream that would need to be read
and parsed in order to get these stats, but that doesn't seem worthwhile.
Signed-off-by: Andreas Dilger <adilger@whamcloud.com>
Reviewed-by: Shilong Wang <wshilong@ddn.com>
Lustre-bug-id: https://jira.whamcloud.com/browse/LU-13197
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Andreas Dilger [Fri, 7 Feb 2020 01:09:39 +0000 (18:09 -0700)]
e2fsck: use proper types for variables
Use ext2_ino_t instead of ino_t for referencing inode numbers.
Use loff_t for for file offsets, and dgrp_t for group numbers.
Cast products to ssize_t before multiplication to avoid overflow.
Signed-off-by: Andreas Dilger <adilger@dilger.ca>
Reviewed-by: Shilong Wang <wshilong@ddn.com>
Lustre-bug-id: https://jira.whamcloud.com/browse/LU-13197
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Andreas Dilger [Fri, 7 Feb 2020 01:09:38 +0000 (18:09 -0700)]
e2fsck: fix e2fsck_allocate_memory() overflow
e2fsck_allocate_memory() takes an "unsigned int size" argument, which
will overflow for allocations above 4GB. This happens for dir_info
and dx_dir_info arrays when there are more than 350M directories in a
filesystem, and for the dblist array above 180M directories.
There is also a risk of overflow during the binary search in both
e2fsck_get_dir_info() and e2fsck_get_dx_dir_info() when the midpoint
of the array is calculated, if there would be more than 2B directories
in the filesystem and working above the half way point.
Also, in some places inode numbers are "int" instead of "ext2_ino_t",
which can also cause problems with the array size calculations, and
makes it hard to identify where inode numbers are used.
Fix e2fsck_allocate_memory() to take an "unsigned long" argument to
match ext2fs_get_mem(), so that it can do single memory allocations
over 4GB.
Fix e2fsck_get_dir_info() and e2fsck_get_dx_dir_info() to temporarily
use an unsigned long long value to calculate the midpoint (which will
always fit into an ext2_ino_t again afterward).
Change variables that hold inode numbers to be ext2_ino_t, and print
them as unsigned values instead of printing negative inode numbers.
Signed-off-by: Andreas Dilger <adilger@whamcloud.com>
Reviewed-by: Shilong Wang <wshilong@ddn.com>
Lustre-bug-id: https://jira.whamcloud.com/browse/LU-13197
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Lukas Czerner [Mon, 10 Feb 2020 15:24:59 +0000 (16:24 +0100)]
tst_libext2fs: Avoid multiple definition of global variables
gcc version 10 changed the default from -fcommon to -fno-common and as a
result e2fsprogs make check tests fail because tst_libext2fs.c end up
with a build error.
This is because it defines two global variables debug_prog_name and
extra_cmds that are already defined in debugfs/debugfs.c. With -fcommon
linker was able to resolve those into the same object, however with
-fno-common it's no longer able to do it and we end up with multiple
definition errors.
Fix the problem by using SKIP_GLOBDEFS macro to skip the variables
definition in debugfs.c. Note that debug_prog_name is also defined in
lib/ext2fs/extent.c when DEBUG macro is used, but this does not work even
with older gcc versions and is never used regardless so I am not going to
bother with it.
Signed-off-by: Lukas Czerner <lczerner@redhat.com>
Reviewed-by: Eric Sandeen <sandeen@redhat.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Jeremy Visser [Mon, 3 Feb 2020 02:37:41 +0000 (13:37 +1100)]
chattr.1: improve attribute formatting with labels and indented paragraphs
By convention, lists of options in man pages use a label followed by an
indented description, such as this example from the Options section:
-R Recursively change attributes of directories and
their contents.
But the Attributes section places the available attributes mid-sentence,
which makes it visually more difficult to parse:
A file with the 'a' attribute set can only be opened
in append mode for writing. [...]
When a file with the 'A' attribute set is accessed, its
atime record is not modified. [...]
This patch places a label beside each attribute description, which (in
my opinion) improves readability, especially when visually skimming the
list. For example:
a A file with the 'a' attribute set can only be
opened in append mode for writing.
A When a file with the 'A' attribute set is accessed,
its atime record is not modified.
Signed-off-by: Jeremy Visser <jeremyvisser@google.com>
Reviewed-by: Andreas Dilger <adilger@dilger.ca>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Theodore Ts'o [Sun, 16 Feb 2020 00:10:01 +0000 (19:10 -0500)]
libext2fs: avoid array buffer overruns caused by insane directory blocks
Reported-by: canardo909@gmx.com
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Theodore Ts'o [Thu, 16 Jan 2020 23:14:37 +0000 (18:14 -0500)]
libext2fs: fix potential OOB read check_for_inode_bad_blocks()
If the bad block list has been reset in the middle of an inode scan,
it's possible for bb->list[scan->bad_blocks_ptr] to result in an
out-of-bounds read access.
This is highly unlikely to happen under normal circumstances; in
particular, we generally don't use bad block inodes any more. In
addition, this would only happen if the bad block inode itself is
corrupt so e2fsck needs to wipe it out. This might cause e2fsck to
crash, but it will more likely cause a part of the inode table to be
wrongly considered invalid, causing file system to be incorrectly
fixed.
This was reported by TALOS as TALOS-2020-0974 and CVE-2020-6057, but
after closer examination, we don't believe this can be used in any way
to exploit the system or release information about the system, since
all this can do is to cause part of the inode table to be skipped when
it shouldn't be, and this can't be leveraged since any information
about the ASLR of the process is obsolete once e2fsck exits.
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Li Dongyang [Mon, 27 Jan 2020 03:06:36 +0000 (22:06 -0500)]
mke2fs: set overhead in super block
If overhead is not recorded in the super block, it is calculated
during mount in kernel, for bigalloc file systems it takes
O(groups**2) in time. For a 1PB device with 32K cluster size it takes
~12 mins to mount, with most of the time spent on figuring out
overhead.
While we can not improve the overhead algorithm in kernel due to the
nature of bigalloc, we can work out the overhead during mke2fs and set
it in the super block, avoiding calculating it every time when it
mounts.
Overhead is s_first_data_block plus internal journal blocks plus the
block and inode bitmaps, inode table, super block backups and group
descriptor blocks for every group. This patch introduces
ext2fs_count_used_clusters(), which calculates the clusters used in
the block bitmap for the given range.
When bad blocks are involved, it gets tricky because the blocks
counted as overhead and the bad blocks can end up in the same
allocation cluster. In this case we will unmark the bad blocks from
the block bitmap, convert to cluster bitmap and get the overhead, then
mark the bad blocks back in the cluster bitmap.
Reset the overhead to zero when resizing, we can not simply count the
used blocks as overhead like we do when mke2fs. The overhead can be
calculated by kernel side during mount.
Signed-off-by: Li Dongyang <dongyangli@ddn.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Li Dongyang [Wed, 20 Nov 2019 04:35:25 +0000 (04:35 +0000)]
ext2fs: rename "s_overhead_blocks" to "s_overhead_clusters"
Rename s_overhead_blocks field from struct ext2_super_block to
make it consistent with the kernel counterpart.
Signed-off-by: Li Dongyang <dongyangli@ddn.com>
Reviewed-by: Andreas Dilger <adilger@dilger.ca>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Li Dongyang [Mon, 27 Jan 2020 02:52:02 +0000 (21:52 -0500)]
libext2fs: optimize ext2fs_convert_subcluster_bitmap()
For a bigalloc filesystem, converting the block bitmap from blocks
to chunks in ext2fs_convert_subcluster_bitmap() can take a long time
when the device is huge, because we test the bitmap
bit-by-bit using ext2fs_test_block_bitmap2().
Use ext2fs_find_first_set_block_bitmap2() which is more efficient
for mke2fs when the fs is mostly empty.
e2fsck can also benefit from this during pass1 block scanning.
Time taken for "mke2fs -O bigalloc,extent -C 131072 -b 4096" on a 1PB
device:
without patch:
real 27m49.457s
user 21m36.474s
sys 6m9.514s
with patch:
real 6m31.908s
user 0m1.806s
sys 6m29.697s
Signed-off-by: Li Dongyang <dongyangli@ddn.com>
Reviewed-by: Andreas Dilger <adilger@dilger.ca>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Theodore Ts'o [Sat, 25 Jan 2020 08:07:05 +0000 (03:07 -0500)]
Merge branch 'maint' into next
Andreas Dilger [Tue, 14 Jan 2020 21:42:18 +0000 (14:42 -0700)]
mmp: abstract out repeated 'sizeof(buf), buf' usage
The printf("%.*s") format requires both the buffer size and buffer
pointer to be specified for each use. Since this is repeatedly given
as "(int)sizeof(buf), (char *)buf" for mmp_nodename and mmp_bdevname
fields, with typecasts to avoid compiler warnings.
Add a helper macro EXT2_LEN_STR() to avoid repeated boilerplate code.
This can also be used for other superblock buffer fields that may not
have NUL-terminated strings (e.g. s_volume_name, s_last_mounted,
s_{first,last}_error_func, s_mount_opts) to simplify code and avoid
the need for temporary buffers for NUL-termination.
Annotate the superblock string fields that may not be NUL-terminated.
Signed-off-by: Andreas Dilger <adilger@dilger.ca>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Andreas Dilger [Tue, 14 Jan 2020 21:42:17 +0000 (14:42 -0700)]
mmp: don't assume NUL termination for MMP strings
Don't assume that mmp_nodename and mmp_bdevname are NUL terminated,
since very long node/device names may completely fill the buffers.
Limit string printing to the maximum buffer size for safety, and
change the field definitions to __u8 to make it more clear that
they are not NUL-terminated strings, as is done with other strings
in the superblock that do not have NUL termination.
Signed-off-by: Andreas Dilger <adilger@dilger.ca>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Theodore Ts'o [Thu, 23 Jan 2020 15:46:10 +0000 (10:46 -0500)]
filefrag: add -E option to display the extent status cache
Ext4 has an extent status cache; add the fiemap extensions so we can
query the kernel for the extent status cache information.
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Theodore Ts'o [Fri, 17 Jan 2020 15:51:16 +0000 (10:51 -0500)]
e2fsck: restart the full e2fsck run if the bad block inode is invalidate
Previously, we just cleared the bad block list and restarted the inode
scan, but we didn't do a full reset of all of e2fsck's state. When
code handling this case; we didn't have the framework to do a
restarted run. Now that we do, we can simply the code and make it
more correct.
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Theodore Ts'o [Fri, 17 Jan 2020 02:58:21 +0000 (21:58 -0500)]
e2fsck: clean up unwind_pass1() as it's no longer really needed
We now restart the full e2fsck instead of unwinding and restarting
pass1. So most of what used to be in unwind_pass1() has been moved
elsewhere. Let's git rid of it entirely, which simplifies and shrinks
pass1.c slightly.
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Theodore Ts'o [Fri, 17 Jan 2020 00:17:26 +0000 (19:17 -0500)]
libext2fs: don't needlessly byte swap the group descriptors in ext2fs_flush
If the EXT2_FLAG_SUPER_ONLY is set, there's no reason to allocate the
shadow block group descriptors and byte swap the group descriptors.
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Theodore Ts'o [Thu, 16 Jan 2020 23:56:49 +0000 (18:56 -0500)]
libext2fs: teach ext2fs_flush() to check if group descriptors are loaded
If the EXT2_FLAG_SUPER_ONLY is not set, and the group descriptors are
not loaded, ext2fs_flush[2]() will return EXT2_ET_NO_GDESC.
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Theodore Ts'o [Thu, 16 Jan 2020 23:33:24 +0000 (18:33 -0500)]
Merge branch 'maint' into next
Theodore Ts'o [Thu, 16 Jan 2020 20:35:29 +0000 (15:35 -0500)]
libext2fs: reserve the error code EXT2_ET_NO_GDESC
This is really only needed in the 1.46+ where the EXT2_FLAG_SUPER_ONLY
is honored by ext2fs_open to only read the superblock, so that
fs->group_desc can be NULL. We define it in the maint branch so that
we can be sure the error tables are kept in sync (in the unlikely case
that a new error code needs to be assigned in the maint branch).
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Theodore Ts'o [Tue, 14 Jan 2020 15:58:10 +0000 (10:58 -0500)]
libext2fs: fix crash in ext2fs_image_super_write() on Big Endian systems
This is a similar fix as
c9a8c53b17cc ("libext2fs: fix crash in
ext2fs_open2() on Big Endian systems").
Commit
e6069a05: ("Teach ext2fs_open2() to honor the
EXT2_FLAG_SUPER_ONLY flag") changed how the function
ext2fs_group_desc() handled a request for a gdp pointer for a group
larger than the number of groups in the file system; it now returns
NULL, instead of returning a pointer beyond the end of the array.
Previously, the ext2fs_imager_super_write() function would swap all of
the block group descriptors in a block, even if they are beyond the
end of the file system. This was OK, since we were not overrunning
the allocated memory, since it was rounded to a block boundary. But
now that ext2fs_group_desc() would return NULL for those gdp, it would
cause ext2fs_open2(), when it was byte swapping the block group
descriptors on Big Endian systems, to dereference a null pointer and
crash.
This commit adds a NULL pointer check to avoid byte swapping those
block group descriptors in a bg descriptor block, but which are beyond
the end of the file system, to address this crash.
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Reported-by: Anatoly Pugachev <matorola@gmail.com>
Theodore Ts'o [Wed, 8 Jan 2020 15:59:37 +0000 (10:59 -0500)]
libcom_err: deal with the fact that the Hurd error messages are not zero-based
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Theodore Ts'o [Tue, 7 Jan 2020 16:52:00 +0000 (11:52 -0500)]
Merge tag 'v1.45.5' into next
v1.45.5
Theodore Ts'o [Mon, 6 Jan 2020 04:54:30 +0000 (23:54 -0500)]
Update release notes, etc., for the 1.45.5 release
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Theodore Ts'o [Mon, 6 Jan 2020 23:01:48 +0000 (18:01 -0500)]
libext2fs: always compile swapfs functions on all architectures
By only compiling the ext2fs_swap_* functions on big-endian systems,
it causes debian/libext2fs2.symbols to need to be different on
different little-endian vs big-endian architectures. Including the
ext2fS_swap_* functions increases the size of the library by ~6k,
which is not a big deal.
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Theodore Ts'o [Mon, 6 Jan 2020 21:01:23 +0000 (16:01 -0500)]
e2scrub, e2scrub_all: don't sleep unnecessarily in exitcode
The two second sleep is only needed in e2scrub, and when there is a
failure, so that systemd has a chance to gather the log output before
e2scrub exits. It's not needed if the script is exiting successfully,
and it's never needed for e2scrub_all ever.
Addresses-Debian-Bug: #948193
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Theodore Ts'o [Mon, 6 Jan 2020 16:47:21 +0000 (11:47 -0500)]
debian: add autopkgtest files
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Theodore Ts'o [Mon, 6 Jan 2020 19:42:01 +0000 (14:42 -0500)]
libext2fs: don't scan /etc/mtab if file system not found in /proc/mounts
Previously we would scan /etc/mtab if the device is not found in
/proc/mounts. This is because previously, /etc/mtab would have the
filename for a loopback mount, while /proc/mounts would only have
something like /dev/loop0. Since on many systems /etc/mtab is now a
symlink to /proc/mounts, ismounted.c has a special function,
check_loop_mounted.
For this reason, it's not necessary to fall back to trying to scan
/etc/mtab if a device / filename is not found from scanning
/proc/mounts. This also prevents failures if the file /etc/mtab does
not exist but /proc/mounts does exist when checking to see if a device
is mounted when it isn't.
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Theodore Ts'o [Thu, 2 Jan 2020 15:59:13 +0000 (10:59 -0500)]
Merge branch 'maint' into next
Theodore Ts'o [Thu, 2 Jan 2020 02:50:27 +0000 (21:50 -0500)]
e2fsck: don't check for future superblock times if checkinterval == 0
We are no longer enabling periodic file system checks by default in
mke2fs. The only reason why we force file system checks if the last
mount time or last write time in the superblock is if this might
bypass the periodic file systme checks. So if the checkinterval is
zero, skip the last mount/write time checks since there's no reason to
force a check just because the system clock is incorrect.
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Theodore Ts'o [Thu, 2 Jan 2020 01:40:43 +0000 (20:40 -0500)]
debian: update debhelper compat level to 12
Signed-off-by: Theodore Ts'o <tytso@mit.edu>