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|
#!/bin/sh
set -e
chrooted() {
if [ "$(stat -c %d/%i /)" = "$(stat -Lc %d/%i /proc/1/root 2>/dev/null)" ];
then
# the devicenumber/inode pair of / is the same as that of /sbin/init's
# root, so we're *not* in a chroot and hence return false.
return 1
fi
echo "A chroot environment has been detected, udev not started."
return 0
}
in_debootstrap() {
# debootstrap --second-stage may be run in an emulator instead of a chroot,
# we need to check for this special case because start-stop-daemon would
# not be available. (#520742)
if [ -d /debootstrap/ ]; then
echo "Being installed by debootstrap, udev not started."
return 0
fi
return 1
}
can_start_udevd() {
if [ ! -d /sys/class/ ]; then
echo "udev requires a mounted sysfs, not started."
return 1
fi
return 0
}
enable_udev() {
can_start_udevd || return 0
invoke-rc.d udev start
}
upgrade_fixes() {
# new Default-Stop (see #791944)
if dpkg --compare-versions "$2" lt-nl "239-8"; then
update-rc.d -f udev remove
fi
}
update_hwdb() {
systemd-hwdb --usr update || true
}
case "$1" in
configure)
# update/create hwdb before we (re)start udev
update_hwdb
# Add new system group used by udev rules
addgroup --quiet --system input
# Make /dev/kvm accessible to kvm group
addgroup --quiet --system kvm
# Make /dev/dri/renderD* accessible to render group
addgroup --quiet --system render
if [ -z "$2" ]; then # first install
if ! chrooted && ! in_debootstrap; then
enable_udev
fi
else # upgrades
upgrade_fixes "$@"
if ! chrooted; then
if can_start_udevd; then
if [ -d /run/systemd/system ] ; then
systemctl daemon-reload || true
fi
invoke-rc.d udev restart
fi
fi
fi
;;
triggered)
update_hwdb
exit 0
;;
esac
#DEBHELPER#
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