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#!/bin/sh
CGDIR="/sys/fs/cgroup"
# precondition: cgroup mount must exist
mountpoint -q $CGDIR || exit 1
# create booster directory
if [ ! -d $CGDIR/booster ]; then
FAIL=1
if mount -o remount,rw $CGDIR; then
if mkdir $CGDIR/booster; then
FAIL=0
fi
if ! mount -o remount,ro $CGDIR; then
FAIL=1
fi
fi
[ $FAIL = 0 ] || exit 1
fi
# mount booster directory
if ! mountpoint -q $CGDIR/booster; then
mount -t cgroup -o none,name=booster cgroup $CGDIR/booster || exit 1
fi
# adjust booster directory permissions
FAIL=0
chown -R root:privileged $CGDIR/booster || FAIL=1
chmod 0774 $CGDIR/booster || FAIL=1
exit $FAIL