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>
* 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>
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>
* 'fuzz' of https://github.com/evverx/util-linux:
tests: pack testcases into zip archives
tests: integrate test_last_fuzz into the testsuite
tests: add a fuzzer for process_wtmp_file
docs: mention OSS-Fuzz and CIFuzz and how to build fuzz targets locally
tools: make it possible to set all the fuzzing flags with config-gen
build-system: make "make distcheck" work
travis: set CXX correctly
travis: turn on --enable-fuzzing-engine
build-sys: add support for --enable-fuzzing-engine
tests: integrate test_mount_fuzz into the testsuite
tests: take exit codes into account
tests: add a fuzzer for mnt_table_parse_stream
Looks like those specifiers haven't been used since 6c9ab254ae
(where sscanf was removed) was merged. This should help to get
util-linux to compile with MSan. Currently it's failing with
```
...
configure: error: libmount selected, but required scanf string alloc modifier not available
...
configure:20240: ./conftest
==116617==WARNING: MemorySanitizer: use-of-uninitialized-value
#0 0x496fd6 in main /home/vagrant/util-linux/conftest.c:171:6
#1 0x7f5eb85ea1a2 in __libc_start_main (/lib64/libc.so.6+0x271a2)
#2 0x41c2cd in _start (/home/vagrant/util-linux/conftest+0x41c2cd)
SUMMARY: MemorySanitizer: use-of-uninitialized-value /home/vagrant/util-linux/conftest.c:171:6 in main
Exiting
configure:20240: $? = 77
...
configure:20265: $? = 0
configure:20265: ./conftest
MemorySanitizer: bad pointer 0x000000496e60
==116627==MemorySanitizer CHECK failed: /builddir/build/BUILD/compiler-rt-9.0.1.src/lib/msan/../sanitizer_common/sanitizer_allocator_secondary.h:177 "((IsAligned(reinterpret_cast<uptr>(p), page_size_))) != (0)" (0x0, 0x0)
#0 0x41d1d8 in MsanCheckFailed(char const*, int, char const*, unsigned long long, unsigned long long) (/home/vagrant/util-linux/conftest+0x41d1d8)
#1 0x484e1e in __sanitizer::CheckFailed(char const*, int, char const*, unsigned long long, unsigned long long) (/home/vagrant/util-linux/conftest+0x484e1e)
#2 0x42066c in __msan::MsanDeallocate(__sanitizer::StackTrace*, void*) (/home/vagrant/util-linux/conftest+0x42066c)
#3 0x424bc9 in free (/home/vagrant/util-linux/conftest+0x424bc9)
#4 0x496fae in main /home/vagrant/util-linux/conftest.c:173:2
#5 0x7f2245f311a2 in __libc_start_main (/lib64/libc.so.6+0x271a2)
#6 0x41c2cd in _start (/home/vagrant/util-linux/conftest+0x41c2cd)
configure:20265: $? = 77
configure: program exited with status 77
...
| }
configure:22568: result: no
configure:22926: error: libmount selected, but required scanf string alloc modifier not available
```
Signed-off-by: Evgeny Vereshchagin <evvers@ya.ru>
Add '-S' or '--softirq' for irqtop/lsirq, instead of interrupts, show
softirqs infomation. Because there is no more description of softirq,
do not show 'NAME' column by default.
Signed-off-by: zhenwei pi <pizhenwei@bytedance.com>
Timestamps in kernel log comes from monotonic clocksource which does not
tick when system suspended. Suspended time easily sums into hours and days
rendering human readable timestamps in dmesg useless.
Adjusting timestamps accouring to current delta between boottime and
monotonic clocksources produces accurate timestamps for messages printed
since last resume. Which are supposed to be most interesting.
Signed-off-by: Konstantin Khlebnikov <khlebnikov@yandex-team.ru>
All simple function to parse --lock <mode> and $LOCK_BLOCK_DEVICE,
and to flock the fd.
The supported <mode> is:
"1" or "yes" - LOCK_EX
"0" or "no" - do nothing
"nonblock" - LOCK_EX | LOCK_NB
The function tries LOCK_NB before the solo LOCK_EX and prints
inform user that it will wait, for example:
session A:
# sfdisk --lock /dev/sdc
session B:
# sfdisk --lock /dev/sdc
sfdisk: /dev/sdc: device already locked, waiting to get lock ...
^C
# sfdisk --lock=nonblock /dev/sdc
sfdisk: /dev/sdc: device already locked
Addresses: https://github.com/karelzak/util-linux/issues/921
Signed-off-by: Karel Zak <kzak@redhat.com>
Lsblk throws the following error for nvmeNcXnY devices.
lsblk: nvme1c1n1: unknown device name
This is because nvmeNcXnY devices are hidden and do not have
the file /sys/block/<nvmeNcXnY>/dev.
Following patch was added
https://git.kernel.org/pub/scm/utils/util-linux/util-linux.git/commit/?id=d51f05bfecb299a830897106460bf395be440c0a
Which made lsblk read from /sys/block/<nvmeNcXnY>/device/dev
which do exist for nvmeNcXnY devices.
After the above patch, the unknown error goes away.
However, another error is encountered in the very next step.
nvme1c1n1: failed to initialize sysfs handler
This is because lsblk looks for /sys/dev/block/242:1
(nvmeNcXnY major:minor) pathname which usually exists for other
block devices but not for the nvmeNcXnY devices as they are hidden.
Below patch does not even print this error for hidden devices
and exits silently.
[kzak@redhat.com: - add prefix to make sysfs_devname_is_hidden()
usable for /sys dumps
- use the function in initialize_device() more early]
Signed-off-by: Ritika Srivastava <ritika.srivastava@oracle.com>
Signed-off-by: Karel Zak <kzak@redhat.com>
It seems that directories like /etc/motd.d are already used by PAM or
by another stuff. Let's keep it in admin/distro hands and do not
change the current default.
Signed-off-by: Karel Zak <kzak@redhat.com>
The current standard is to use directories to make it easy for
distributions to share resources. This patch also add /etc/motd.d
and /run/motd.d to the default MOTD_FILE=.
Addresses: https://github.com/karelzak/util-linux/issues/10341
Signed-off-by: Karel Zak <kzak@redhat.com>
We already have mbs_safe_nwidth() but it assumes that all "bad" chars
will be encoded by \x<hex>. Now we need also function that do not care
about encoding.
Signed-off-by: Karel Zak <kzak@redhat.com>
* 'map-user' of https://github.com/mat8913/util-linux:
unshare: Support names for map-user/group options
lib/pwdutils: add xgetgrnam
unshare: allow custom uid/gid mappings in userns
This patch prevents to call the function strlen() with a NULL string
argument that leads to a segmentation fault.
Signed-off-by: Gaël PORTAY <gael.portay@collabora.com>
This adds support to unshare for time namespaces. With the newly added
options '-t, --time' and '--monotonic' and '--boottime' it is now
possible to change CLOCK_MONOTONIC and CLOCK_BOOTTIME in a new time
namespace.
The time namespace has been merged in kernel version 5.6 and an easy way
to test it is using CLOCK_BOOTTIME and the uptime command:
# uptime
11:08:26 up 20:28, 1 user, load average: 0.00, 0.00, 0.00
# ./unshare --fork --time --boottime 100000000 uptime
11:08:29 up 1158 days, 6:15, 1 user, load average: 0.00, 0.00, 0.00
Signed-off-by: Adrian Reber <areber@redhat.com>
Let's consolidate the code, we need to use it in libfdisk too. It
seems better to keep it generic and libblkid independent.
This patch also removes blkid_encode_alloc(), this function is overkill.
Signed-off-by: Karel Zak <kzak@redhat.com>
* 'various-fixes' of https://github.com/kerolasa/util-linux:
kill: include sys/types.h before checking SYS_pidfd_send_signal
libfdisk: fix pointer wraparound warning
hwclock: update yacc file
script: fix minor warning
getopt: use examples installation directory in man page
fstrim: randomize timer start time across 100 minutes
various: use threadsafe versions of time functions [lgtm scan]
write: fix potential string overflow
Including sys/types.h must happen before SYS_pidfd_send_signal is checked,
because that header defines variable in normal conditions. When sys/types.h
does not have SYS_pidfd_send_signal then fallback is defined in config.h
that is included by default, and has therefore worked fine before and after
this change.
Signed-off-by: Sami Kerola <kerolasa@iki.fi>
Deprecating calls to not-thread safe asctime(), ctime(), and localtime()
calls is pretty close to pointless change. Lets do it to reduce lgtm scan
warnings with justification it's nicer to use static analysis tools when
they have very few positives.
Signed-off-by: Sami Kerola <kerolasa@iki.fi>
Let's add "Arguments:" section to the --help output and describe
{K,M,G...}iB suffixes there.
Addresses: https://github.com/karelzak/util-linux/pull/917
Co-Author: ed <ed@s5h.net>
Signed-off-by: Karel Zak <kzak@redhat.com>
* fix double free
* keep strrealloc() semantic compatible with classic realloc() (do not
free original pointer on failed memory allocation).
* remove unnecessary goto
Signed-off-by: Karel Zak <kzak@redhat.com>
It's mostly wrappers for compatibility and another trivial stuff etc.
Let's keep it as public domain to make it more portable to LGPL, GPL
and BSD code.
Signed-off-by: Karel Zak <kzak@redhat.com>
CC: Sami Kerola <kerolasa@iki.fi>
CC: Ruediger Meier <ruediger.meier@ga-group.nl>
Move the helper functions that parse ISO data & sector size info into
a separate, shared header.
These will addtionally be used by libblkid's iso9660 parser.
Signed-off-by: Daniel Drake <drake@endlessm.com>
* 'kill-pidfd' of https://github.com/kerolasa/util-linux:
kill: use pidfd system calls to implement --timeout option
build-sys: add missing NR underscore to UL_CHECK_SYSCALL()
Karel Zak
Sinan Kaya
nl6720
Soumendra Ganguly
Evgeny Vereshchagin
zhenwei pi
Konstantin Khlebnikov
Ritika Srivastava
Rosen Penev
Matthew Harm Bekkema
Sami Kerola
Gaël PORTAY
Adrian Reber
Daniel Drake