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|
#!/bin/sh -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
}
update_initramfs() {
[ -x /usr/sbin/update-initramfs -a -e /etc/initramfs-tools/initramfs.conf ] \
|| return 0
update-initramfs -u
}
upgrade_fixes() {
if dpkg --compare-versions "$2" lt "226-1"; then
update-rc.d udev-finish remove
fi
# we enabled net.ifnames in 220-7 by default; don't change iface names in
# virtualized envs (where 75-persistent-net-generator.rules didn't work)
if dpkg --compare-versions "$2" lt-nl "220-7~" &&
[ ! -e /etc/udev/rules.d/70-persistent-net.rules ] &&
[ ! -e /etc/udev/rules.d/80-net-setup-link.rules ] &&
[ ! -e /etc/systemd/network/99-default.link ] &&
[ ! -L /etc/systemd/network/99-default.link ] &&
! grep -q net.ifnames /proc/cmdline && ! chrooted; then
mkdir -p /etc/systemd/network
cat <<EOF > /etc/systemd/network/99-default.link
# This machine is most likely a virtualized guest, where the old persistent
# network interface mechanism (75-persistent-net-generator.rules) did not work.
# This file disables /lib/systemd/network/99-default.link to avoid
# changing network interface names on upgrade. Please read
# /usr/share/doc/udev/README.Debian.gz about how to migrate to the currently
# supported mechanism.
EOF
fi
# 226 introduced predictable interface names for virtio
# (https://github.com/systemd/systemd/pull/1119); disable for upgrades
if dpkg --compare-versions "$2" lt-nl "226-2~" &&
[ ! -e /etc/systemd/network/50-virtio-kernel-names.link ] &&
ls -d /sys/bus/virtio/drivers/virtio_net/virt* >/dev/null 2>&1; then
echo "virtio network devices detected, disabling predictable interface names in /etc/systemd/network/50-virtio-kernel-names.link"
mkdir -p /etc/systemd/network/
cat <<EOF > /etc/systemd/network/50-virtio-kernel-names.link
# udev 226 introduced predictable interface names for virtio;
# disable this for upgrades. You can remove this file if you update your
# network configuration to move to the ens* names instead.
# See /usr/share/doc/udev/README.Debian.gz for details about predictable
# network interface names.
[Match]
Driver=virtio_net
[Link]
NamePolicy=onboard kernel
EOF
fi
# 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
update_initramfs
;;
triggered)
update_hwdb
exit 0
;;
esac
#DEBHELPER#
|
