#4353: util-linux-v2.33
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Reporter: bdubbs | Owner: lfs-book
Type: task | Status: new
Priority: normal | Milestone: 8.4
Component: Book | Version: SVN
Severity: normal | Resolution:
Keywords: |
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Comment (by bdubbs):
Release highlights
choom -- NEW COMMAND to adjust and display the current OOM-killer score.
The library libsmartcols has been improved to differentiate between
numbers,
booleans and strings in JSON output. The old versions uses strings
everywhere.
It's recommended to re-test your applications if you parse JSON outputs
from
util-linux tools.
The command fstrim(8) has been extended to trim all mounted filesystems
from /etc/fstab (-A | --fstab). This semantic is the default for systemd
fstrim.service now. The original default for the service was to trim all
(-a | --all) mounted filesystems (including for example removable media).
Now it is also possible to test fstrim behavior by new command line option
--dry-run.
The command hwclock(8) provides a new command line option --delay to
overwrite
internally used delay when set clock time. The default is 0.5 (500ms) for
rtc_cmos, for another RTC types the delay is 0. If RTC type is impossible
to
determine (from sysfs) then it defaults also to 0.5 to be backwardly
compatible. The 500ms default is based on commonly used MC146818A-
compatible
(x86) hardware clock.
The commands mount and umount, and libmount allow to mount and umount
filesystem in another namespace. The namespace may be specified by
--namespace
<pid|path> command line option. The commands switch to the namespace when
it
reads /etc/fstab, writes /etc/mtab (or writes to /run/mount) and calls
[u]mount
system calls, otherwise it runs in the original namespace. It means that
the
target namespace does not have to contain any libraries or another
requirements
necessary to execute mount(8) or umount(8) commands.
The command rename(1) provides a new command line option --interactive to
ask
before overwriting.
The command setarch(8) does not require architecture when modify
personality like
ADDR_NO_RANDOMIZE. The architecture argument is optional now.
The command su(1) provides a new command line option --whitelist-
environment to
protect specified variables when su(1) starts a new session.
The command setpriv(1) provides a new command line option --reset-env to
reset
all environment. The another new command line option --pdeathsig allows to
keep, clear or or set the parent death signal. Note that some LSMs, most
notably
SELinux and AppArmor, clear the signal when the process' credentials
change.
The commands fdisk(8) and sfdisk(8) print disk model name to simplify
device
identification.
The command "column --table-empty-lines" allows to use empty lines in
formatted
output.
The command wipefs has been improved to postpone BLKRRPART (re-read
partition
table) ioctl until all magic strings are wiped. This semantic allows to
avoid
conflicts between on partition magic strings and partition tables.
The command script(1) has been extended to store more information about
terminal size and type to the typescript header. The size of the output
may be
also restricted by a new command line option --output-limit.
The libblkid provides BitLocker and basic APFS detection now.
The command lsblk is possible to execute against /sys and /proc dumps if
command
line option --sysroot is specified. This allows to prepare regression
tests for
lsblk. So, if you have a complicated or unusual setup (RAIDs, pools, etc)
than
you can use
https://raw.githubusercontent.com/karelzak/util-
linux/master/tests/ts/lsblk/mk-input.sh
to generate the dump and send the tarball to upstream developers.
(Thanks!)
The script ./configure has been improved and --with/without command line
options should be more consistent now. It's recommended to re-test your
build
scripts.
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Ticket URL: <http://wiki.linuxfromscratch.org/lfs/ticket/4353#comment:3>
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