The goal is to use it in libmount when generate options strings
and in libsmartcols to replace libscols_buffer.
Signed-off-by: Karel Zak <kzak@redhat.com>
The recent change in code improves main-pool on error, but we need
to kill child process if it still running to avoid hang up in next
waitpid().
Signed-off-by: Karel Zak <kzak@redhat.com>
Handle error based on return code of handle_io() and handle_signal().
Keep SIGTTIN unblocked during read() in handle_io().
Signed-off-by: Soumendra Ganguly <soumendraganguly@gmail.com>
I discovered that making a file sparse with "fallocate -d filename"
fails on the last block of a file, because - usually being partial -
the system call only zeroes that part instead of deallocating the
block. See man fallocate(2) - section "Deallocating file space".
The expected call is punching the whole block beyond eof, which
doesn't change the file length because of flag FALLOC_FL_KEEP_SIZE.
Signed-off-by: Karel Zak <kzak@redhat.com>
Add a command that answers the the question:
"How much data can I store on this device/in this range of zones?"
Implement this by summing up zone capacities over the given range.
Signed-off-by: Hans Holmberg <hans.holmberg@wdc.com>
We do not need to provide details in the default output. It seems
better to hide it behind --verbose to be user-friendly.
Signed-off-by: Karel Zak <kzak@redhat.com>
- remove unknown extent type (kernel does not care about it too)
- fix last_logical use in messages
- improve warning for DELALLOC extents
- check for hole at the end of the file
Reported-by: Lukas Czerner <lczerner@redhat.com>
Signed-off-by: Karel Zak <kzak@redhat.com>
* do not ignore all empty devices, we need more smart solution
* ignore only loop devices without backing file, for example:
# touch img
# losetup -f img
losetup: img: Warning: file is smaller than 512 bytes; the loop device may be useless or invisible for system tools.
- old version display nothing
- new version:
# lsblk /dev/loop0
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
loop0 7:0 0 0B 0 loop
Addresses: https://github.com/karelzak/util-linux/issues/1118
Signed-off-by: Karel Zak <kzak@redhat.com>
Let's make mkswap(8) more user-friend and report possible swapon
issues already when user initialize a swap file. The extents check
produces warnings, no exit with error.
# dd if=/dev/zero of=img count=100 bs=1MiB
# chmod 0600 img
# fallocate --dig-hole --offset 64520192 --length 1MiB img
# fallocate --dig-hole --offset 84520960 --length 1MiB img
# ./mkswap img
mkswap: extents check failed:
- hole detected at offset 64520192 (size 1048576 bytes)
- hole detected at offset 84520960 (size 1048576 bytes)
file img can be rejected by kernel on swap activation.
Setting up swapspace version 1, size = 100 MiB (104853504 bytes)
no label, UUID=92091112-26b5-47aa-a02a-592e52528319
It checks for holes in the file, and for unknown, inline, shared and
deallocated extents.
Addresses: https://github.com/karelzak/util-linux/issues/1120
Signed-off-by: Karel Zak <kzak@redhat.com>
Commit 7b54f05d6b added iflag=fullblock
option, it works fine with coreutils's dd but macOS's dd doesn't support
iflag option then test failed on macOS[1].
This commit added prepared test data for test to not use dd command to
avoid dd command difference.
tested on raspberry pi3
$ sudo sh -c 'for i in $(seq 1 500); do taskset -c 0 ./ts/cramfs/mkfs-endianness ; done' | grep FAILED | wc -l
0
tested on macOS
$ sudo sh -c 'for i in $(seq 1 500); do ./ts/cramfs/mkfs-endianness ; done' | grep FAILED | wc -l
0
[1]https://travis-ci.org/github/karelzak/util-linux/jobs/723642222#L3907
Signed-off-by: Masami Ichikawa <masami256@gmail.com>
This adds support for the "nosymfollow" mount option, which indicates
that symlinks should not be traversed on the mount this option is
applied to. Also update the mount(8) man page with information about
this option.
Signed-off-by: Mattias Nissler <mnissler@chromium.org>
Signed-off-by: Ross Zwisler <zwisler@google.com>
When run mkfs-endianness test on lowend machine, sometimes dd didn't
fill block with string then test failed.
So, it's nice to add iflag=fullblock option to fill a block with
string read from stdin.
Tested on Raspberry Pi 3 B+(using 1core to simulate lowend environment)
with iflag=fullblock option didn't get test failure.
Without iflag=fullblock option.
$ sudo sh -c 'for i in $(seq 1 500); do taskset -c 0 ./ts/cramfs/mkfs-endianness ; done' | grep FAILED | wc -l
49
With iflag=fullblock option.
$ sudo sh -c 'for i in $(seq 1 500); do taskset -c 0 ./ts/cramfs/mkfs-endianness ; done' | grep FAILED | wc -l
0
Signed-off-by: Masami Ichikawa <masami256@gmail.com>
Fix couple "initialization of ‘long int’ from ‘void *’ makes integer from
pointer without a cast" warnings.
Signed-off-by: Sami Kerola <kerolasa@iki.fi>
The size (3rd) argument should be ignored if the 1st *dest is NULL, but it seems gcc & glibc headers
are more pedantic now:
ext-utils/pg.c:456:13: error: argument 1 is null but the corresponding size argument 3 value is 2048 [-Werror=nonnull]
Signed-off-by: Karel Zak <kzak@redhat.com>
This workaround has been introduced by
e4925f591c
And originally requested by https://github.com/systemd/systemd/issues/10872
It seems we do not need it anymore as the problem should be fixed in kernel since 5.8
(kernel commit 9f6c61f96f2d97cbb5f7fa85607bc398f843ff0f).
Note that the libmount solution is very expensive as it repeats read()
many times (until we get consistent result) if kernel is busy with
mount table modification. This behaviour makes events management in
systemd (or other places) pretty difficult as read mountinfo takes
time on busy systems.
Addresses: https://github.com/systemd/systemd/pull/16537
Signed-off-by: Karel Zak <kzak@redhat.com>
turns out this is subtly broken. musl 1.2.x for 64-bit architectures defines __NR_settimeofday but not
for 32-bit ones. For 32-bit, it defines a _time32 variant.
Permanently turn off current stdin ECHO when it is a terminal and enable setting slave ECHO instead.
Fix other minor typos, update documentation.
[kzak@redhat.com: - remove irrelevant changes
- keep --echo argument unchanged]
Signed-off-by: Karel Zak <kzak@redhat.com>
Karel Zak
nl6720
Soumendra Ganguly
Gero Treuner
Tomoaki Teshima
Hans Holmberg
Thayne McCombs
Masami Ichikawa
yangzz-97
Mattias Nissler
Sami Kerola
Rosen Penev
leeceeksdee
Michael Kerrisk (man-pages)