Utilization clamping is a new kernel feature that got merged in 5.3. It
allows controlling the performance of a process by manipulating the
utilization such that the task appears bigger or smaller than what it
really is.
There's a system-wide control to to restrict what maximum values the
process are allowed to use.
Man page added in a later patch attempts to explain the usage in more
detail.
Signed-off-by: Qais Yousef <qais.yousef@arm.com>
It might be useful for security auditing purposes list all possible
mount flags/options including default set which are normally not listed.
This patch adds "--vfs-all" option to list all fs-independent flags
on VFS-OPTIONS column, as well as libmount funcionality to accomplish
it.
i.e.:
$ findmnt -o VFS-OPTIONS
VFS-OPTIONS
rw,relatime
rw,nosuid,nodev,noexec,relatime
rw,nosuid,nodev,noexec,relatime
ro,nosuid,nodev,noexec
...
$ findmnt --vfs-all -o VFS-OPTIONS
VFS-OPTIONS
rw,exec,suid,dev,async,loud,nomand,atime,noiversion,diratime,relatime,nostrictatime,nolazytime,symfollow
rw,noexec,nosuid,nodev,async,loud,nomand,atime,noiversion,diratime,relatime,nostrictatime,nolazytime,symfollow
rw,noexec,nosuid,nodev,async,loud,nomand,atime,noiversion,diratime,relatime,nostrictatime,nolazytime,symfollow
ro,noexec,nosuid,nodev,async,loud,nomand,atime,noiversion,diratime,norelatime,nostrictatime,nolazytime,symfollow
...
[kzak@redhat.com: - cleanup coding style and comments]
Signed-off-by: Roberto Bergantinos Corpas <rbergant@redhat.com>
Signed-off-by: Karel Zak <kzak@redhat.com>
It seems like overkill to provide this #ifdef. For example coreutils
use "char *" for all selinux contexts (since 2014).
Signed-off-by: Karel Zak <kzak@redhat.com>
It seems the current kernel can create a loop devices with a different
major number. For example
# losetup /dev/loop12345678 file.img
# lsblk /dev/loop12345678
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
loop12345678 15:811342 0 5M 0 loop
We need a way how to verify the device is loopdev also when the device is
not associated with any backing file -- in this case there is no "loop"
directory in /sys/dev/block/<maj:min>/, but we can cannonicalize this sysfs
symlink as it points to /sys/devices/virtual/block/loop<n> (see "loop" in
the path).
Note that without this change losetup is not able to list and delete
the loop device.
Addresses: https://github.com/karelzak/util-linux/issues/1202
Signed-off-by: Karel Zak <kzak@redhat.com>
Easiest way to get rid of the following warning is to ignore the warning.
This might cause people who use non-GNU make to have hard time, but are
there such people compiling this project?
sys-utils/Makemodule.am:226: warning: addprefix sys-utils/,$(SETARCH_LINKS: non-POSIX variable name
sys-utils/Makemodule.am:226: (probably a GNU make extension)
Signed-off-by: Sami Kerola <kerolasa@iki.fi>
The current GFS2 prober hard codes superblock constants, but these
constants are affected by GFS2 development.
Addresses: https://bugzilla.redhat.com/show_bug.cgi?id=1913844
Signed-off-by: Karel Zak <kzak@redhat.com>
It displays filesystem root attached to system, for example
btrfs with two mounted subvolumes:
$ lsblk -oNAME,SIZE,MOUNTPOINTS,FSROOTS /dev/sdc1
NAME SIZE MOUNTPOINTS FSROOTS
sdc1 50M /mnt/A /foo
/mnt/B /bar
Signed-off-by: Karel Zak <kzak@redhat.com>
* add libmount FS to struct lsblk_device
* add new column MOUNTPOINTS (pl.) with multi-line cells to display
all mountpoints relevant for the device
* the old MOUNTPOINT is backwardly compatible and it (usually) displays the
last device mountpoint from /proc/self/mountinfo
For example btrfs with more subvolumes:
$ lsblk -o+MOUNTPOINTS /dev/sdc1
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT MOUNTPOINTS
sdc1 8:33 0 50M 0 part /mnt/test /mnt/A
/mnt/test
/mnt/B
Note, in this case MOUNTPOINT displays mount point where is mounted
root of the filesystem.
Signed-off-by: Karel Zak <kzak@redhat.com>
This patch add support to format multi-line cells (columns with
SCOLS_FL_WRAP) to arrays in JSON output.
For example mountpoints[] in lsblk output:
Normal output:
$ lsblk -oNAME,FSTYPE,TYPE,MOUNTPOINTS /dev/sdc1
NAME FSTYPE TYPE MOUNTPOINTS
sdc1 btrfs part /mnt/A
/mnt/test
/mnt/B
JSON output:
$ lsblk -J -oNAME,FSTYPE,TYPE,MOUNTPOINTS /dev/sdc1
{
"blockdevices": [
{
"name": "sdc1",
"fstype": "btrfs",
"type": "part",
"mountpoints": [
"/mnt/A",
"/mnt/test",
"/mnt/B"
]
}
]
}
Signed-off-by: Karel Zak <kzak@redhat.com>
The function mnt_fs_is_swaparea() does not return TRUE for entries
from /proc/swaps. This is pretty strange.
Signed-off-by: Karel Zak <kzak@redhat.com>
GNU libc's getopt_long(3) have the tradition of not shuffling arguments
to find options when either POSIXLY_CORRECT is defined in environment
variables or '+' prepended in short options. Hence, the current code
base is fine as is fine as is for util-linux built with GNU libc.
However, musl libc only honour POSIX convention when short options
prepended with '+'. musl libc doesn't care about POSIXLY_CORRECT.
Thus, the behaviour of util-linux's getopt(1) that linked with musl-libc
doesn't match with its own documentation.
Let's make sure a '+' is always prepended to short options if
POSIXLY_CORRECT is defined.
Signed-off-by: Đoàn Trần Công Danh <congdanhqx@gmail.com>
* '2020wk47' of https://github.com/kerolasa/util-linux:
build-sys: sort various lists in configure.ac
mkswap: tell how to fix insecure permissions and owner in warning
lsipc: make default output byte sizes to be in human units
man: add missing backslash to caret printing macro
lscpu: fix variable shadowing
uuidgen: give hint in usage() what uuid namepaces can be used
uuidgen: use errx() rather than fprintf() when priting errors
libuuid: simplify uuid_is_null() check
uuidparse: use uuid type definitions from libuuid header
uuidparse: use libuuid function to test nil uuid
This is difference between (c)fdisk and GNU Parted, fdisks keep all
changes in memory until user explicitly ask for write operation.
Addresses: https://github.com/karelzak/util-linux/pull/1227
Signed-off-by: Karel Zak <kzak@redhat.com>
The man-page indicates that mount expects UUIDs to be lower case.
Mention that NTFS and FAT volume IDs are to be specified in upper case.
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Recent request to make ipcs(1) list sizes in human format caused the
observation lsipc(1) is not doing that either. This commit changes sizes to
human format, assuming --bytes option is not used.
Reference: https://github.com/karelzak/util-linux/issues/1199
Signed-off-by: Sami Kerola <kerolasa@iki.fi>
sys-utils/lscpu-virt.c: In function ‘lscpu_read_virtualization’:
sys-utils/lscpu-virt.c:574:9: warning: declaration of ‘buf’ shadows a previous local [-Wshadow]
574 | char buf[256];
| ^~~
sys-utils/lscpu-virt.c:506:7: note: shadowed declaration is here
506 | char buf[BUFSIZ];
| ^~~
Signed-off-by: Sami Kerola <kerolasa@iki.fi>
Qais Yousef
Roberto Bergantinos Corpas
Karel Zak
Sami Kerola
Gaël PORTAY
Đoàn Trần Công Danh
Eric Biggers
Heinrich Schuchardt
Chris Hofstaedtler
Dmitriy Chestnykh
Vincent McIntyre