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MahiroOS-jhalfs/common/run-in-cgroup.sh
Pierre Labastie 249d4ade20 Fix (again) the run-in-cgroup.sh script
When using "sh  << EOF", what is between this line and EOF runs
with no attached terminal. But we need a terminal for running the
build. So we have to use "sh -c ". But then nesting of double
quotes, $, etc is too complicated. So run as root, and become back
user only when exec'ing. For some reason $@ does not work, so use
a variable set to $@.
2023-11-16 16:10:46 +01:00

36 lines
1.1 KiB
Bash
Executable file

#!/bin/bash
if [ -z "$CPUSPEC" ] || [ "$#" -lt 1 ]; then
echo "usage: CPUSPEC=... $0 command"
exit 1
fi
ARGS="$@"
set +e
if type systemd-run >/dev/null 2>&1 ; then # systemd
sudo systemd-run -G --pty -d --uid=$(whoami) \
-p AllowedCPUs="$CPUSPEC" \
--slice "user-$(whoami).slice" \
"$@"
elif type loginctl >/dev/null 2>&1 ; then #elogind
sudo mkdir /sys/fs/cgroup/jhalfs
sudo sh -c "echo +cpuset > /sys/fs/cgroup/cgroup.subtree_control"
(
sudo sh -c "echo $BASHPID > /sys/fs/cgroup/jhalfs/cgroup.procs"
sudo sh -c "
SESS_CGROUP=/sys/fs/cgroup/\$XDG_SESSION_ID
echo $CPUSPEC > \$SESS_CGROUP/cpuset.cpus
( echo \$BASHPID > \$SESS_CGROUP/cgroup.procs &&
exec sudo -u $(whoami) $ARGS )"
)
sudo rmdir /sys/fs/cgroup/jhalfs
else # no session manager
sudo mkdir /sys/fs/cgroup/jhalfs
sudo sh -c "echo +cpuset > /sys/fs/cgroup/cgroup.subtree_control"
sudo sh -c "echo \"$CPUSPEC\" > /sys/fs/cgroup/jhalfs/cpuset.cpus"
(sudo sh -c "echo $BASHPID > /sys/fs/cgroup/jhalfs/cgroup.procs" &&
exec "$@")
sudo rmdir /sys/fs/cgroup/jhalfs
fi