Some of the fsck and mkfs commands complete differently than the others,
and differently than the desired behavior.[1] Standardize on completing
with $(lsblk -pnro name):
* fsck: Don't complete completes on all block devices and device links
under /dev immediately (which is excessive and prone to search
problems).
* mkfs, mkfs.bfs: Don't complete "/path/to/file" literally. I assume
this was copy/pasted from example code, since it does not appear to be
a valid argument unless it is a valid path, which is rare.
* fsck.cramfs, mkfs, mkfs.bfs, mkfs.cramfs, mkswap: Don't complete on
all filenames initially. The desired behavior is to complete
filenames only if there are no canonical matches.[1]
Note: A subsequent commit will add the desired fallback behavior.
[1]: https://github.com/karelzak/util-linux/issues/842#issuecomment-523450243
Signed-off-by: Kevin Locke <kevin@kevinlocke.name>
We do not use sector-size from dumps to create partition tables,
because it's always necessary to use real device specific settings.
The new sector-size value is usable when you use the dump as
a description of the device or disk image.
Addresses: https://github.com/karelzak/util-linux/issues/869
Signed-off-by: Karel Zak <kzak@redhat.com>
usage:
* use --option[=<argument>] to make it obvious that '=' is required
* don't use [ ] for required arguments
* add separators to make it more readable
man page
* use --option=[<argument>] for optional arguments in man page
* don't use \fI or \fB for keywords based arguments (on|off|default ...)
* use the same style in all man page
Signed-off-by: Karel Zak <kzak@redhat.com>
... but I have doubts this change fixes the issue. It seems (on my
system) that \0 is already filtered out by kernel/syslog.
Addresses: https://github.com/karelzak/util-linux/issues/862
Signed-off-by: Karel Zak <kzak@redhat.com>
Add the --keep-caps option to unshare to preserve capabilities that
are granted when creating a new user namespace. This allows the child
process to retain privilege within the new user namespace without also
being UID 0.
We have no way how to print the kernel message buffer in really raw
way. The new option --noescape disables all \x<hex> translations.
Addresses: https://github.com/karelzak/util-linux/issues/858
Signed-off-by: Karel Zak <kzak@redhat.com>
Add the --map-current-user option to unshare. This option maps the
current effective UID and GID in the new user namespace so that the
inner and outer credentials match.
Signed-off-by: James Peach <jpeach@apache.org>
The log may be pretty huge and very probably not used by many users.
Let's make it optional.
The patch also clean up move-data output messages.
Addresses: https://github.com/karelzak/util-linux/issues/848
Signed-off-by: Karel Zak <kzak@redhat.com>
The current implementation is too paranoid and tries to keep in
memory only data which are on disk too. It means very small step size
when move partition only a few sectors left/right.
This patch enlarge the buffer to at least 1MiB and aligned to optimal
I/O.
Addresses: https://github.com/karelzak/util-linux/issues/848
Signed-off-by: Karel Zak <kzak@redhat.com>
The current implementation does not allow to move partition for
example in +/-1 sector range, because free space analyze is by default
based on regular grain used for partitioning (=1MiB).
Signed-off-by: Karel Zak <kzak@redhat.com>
It seems better to silently ignore mount binds on file (= mountpoint
is not a directory).
This patch also fixes use-after-free bug from commit 402006fa6e.
Addresses: https://github.com/karelzak/util-linux/issues/857
Signed-off-by: Karel Zak <kzak@redhat.com>
We need to clear stdin errors otherwise it returns EOF forever after
CTRL+D.
Reported-by: Lukas Czerner <lczerner@redhat.com>
Signed-off-by: Karel Zak <kzak@redhat.com>
Old xfs.img cannot be used with current version (5.0) of xfsprogs, so create
a new version of xfs-v5.img.
Since I wasn't able to find logs on how was created old xfs.img, saving
create log with this commit message:
$ fallocate -l 16M xfs-v5.img
$ mkfs.xfs -L test-xfs-v5 xfs-v5.img
$ ./blkid -p -o udev xfs-v5.img | sort -V > tests/expected/blkid/low-probe-xfs-v5
$ xz -c xfs-v5.img > tests/ts/blkid/images-fs/xfs-v5.img.xz
Signed-off-by: Anatoly Pugachev <matorola@gmail.com>
This patch extends libblkid, so that it reports filesystem block size.
When blkid returns a specific number in the BLOCK_SIZE attribute, it
guarantees that all the bios submitted by the filesystem are aligned on
this boundary.
We need this because when we want to enable dm-integrity or dm-writecache
on an existing filesystem, we need to know filesystem block size, so that
dm-integrity or dm-writecache is initialized with matching block size.
We could always use block size 512 for dm-integrity and dm-writecache, but
that would cause metadata overhead and performance degradation. On the
other hand, if we used block size 4096, it would fail if the filesystem
has smaller blocksize.
[kzak@redhat.com: - move vfat BLOCK_SIZE to probing function
- remove unwanted debug fprintf from ZFS prober]
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Karel Zak <kzak@redhat.com>
In order to avoid closing standard streams multiple times, commit
52aa1a661 (include/closestream: avoid close more than once, 2019-06-13)
introduced code to set the standard output and error streams to `NULL`.
As musl libc defines standard streams as constant pointers, the change
causes compiler errors on systems with that libc. According to ISO C89,
being able to assign to the standard text streams is not a requirement
for any C implementation, see footnote 238 in chapter §7.19.5.6:
The primary use of the freopen function is to change the file
associated with a standard text stream (stderr, stdin, or stdout),
as those identifiers need not be modifiable lvalues to which the
value returned by the fopen function may be assigned.
This commit implements a new function `flush_standard_stream` that tries
to reliably flush standard streams without actually closing them. By not
calling fclose(3P), we can neatly avoid the issue of accessing standard
streams in an unspecified state and thus remove the infringing `NULL`
assignments.
Properly flushing standard streams without fclose(3P) proves to be more
intricate than one may expect, though, as some filesystems like NFS may
defer flushing until they see a close(3P) of the underlying descriptor.
One may call fsync(3P) to remedy that, but this may incur a heavy
performance penalty in some scenarios. To work around the issue and
still get proper errors, we duplicate the stream's file descriptor and
close that one instead, which is sufficient to cause a flush.
Note that both `close_stdout` and `close_stdout_atexit` are misnamed
after this change, as we do not actually close the streams now. In order
to avoid unnecessary code churn, we still retain their current names.
Signed-off-by: Patrick Steinhardt <ps@pks.im>
Kevin Locke
Karel Zak
Sami Kerola
Matthew Krupcale
Ernesto A. Fernández
James Peach
Anatoly Pugachev
Mikulas Patocka
Patrick Steinhardt