#!/bin/sh -e

PREREQS=""

prereqs() { echo "$PREREQS"; }

case "$1" in
prereqs)
prereqs
exit 0
;;
esac

root_over_the_network() {
if egrep -qs '^/dev/(nbd|nd[a-z]|etherd/e)[^[:space:]]+[[:space:]]+/[[:space:]]' /etc/fstab; then
return 0
elif egrep -qs '^[^[:space:]#]+[[:space:]]+/[[:space:]]+nfs[234]?[[:space:]]' /etc/fstab; then
return 0
fi
return 1 # false
}

. /usr/share/initramfs-tools/hook-functions

mkdir -p $DESTDIR/lib/systemd
copy_exec /lib/systemd/systemd-udevd /lib/systemd
if [ -x /sbin/udevadm.upgrade ]; then
copy_exec /bin/udevadm.upgrade /bin/udevadm
else
copy_exec /bin/udevadm
fi
# copy compat symlink
cp -a /sbin/udevadm $DESTDIR/sbin/udevadm

mkdir -p $DESTDIR/etc/udev
cp -p /etc/udev/udev.conf $DESTDIR/etc/udev/

mkdir -p $DESTDIR/lib/udev/rules.d/
for rules in 50-firmware.rules 50-udev-default.rules 60-persistent-storage.rules \
80-drivers.rules 91-permissions.rules \
64-md-raid.rules 60-persistent-storage-lvm.rules \
55-dm.rules 60-persistent-storage-dm.rules; do
if [ -e /etc/udev/rules.d/$rules ]; then
cp -p /etc/udev/rules.d/$rules $DESTDIR/lib/udev/rules.d/
elif [ -e /lib/udev/rules.d/$rules ]; then
cp -p /lib/udev/rules.d/$rules $DESTDIR/lib/udev/rules.d/
fi
done

# try to autodetect the value of this configuration option
if [ -z "$NEED_PERSISTENT_NET" ] && root_over_the_network; then
NEED_PERSISTENT_NET='yes'
fi

# Copy the rules for persistent network interface names for the benefit of
# systems which need to boot over the network. If this is enabled then the
# initramfs must be rebuilt every time a new network interface is added.
# See #414287 for details.
case "$NEED_PERSISTENT_NET" in
YES|yes|Yes|Y|y)
if [ -e /etc/udev/rules.d/70-persistent-net.rules ]; then
cp -p /etc/udev/rules.d/70-persistent-net.rules $DESTDIR/lib/udev/rules.d/
fi
;;
esac

cp /lib/udev/hotplug.functions $DESTDIR/lib/udev/
for program in ata_id scsi_id; do
copy_exec /lib/udev/$program /lib/udev
done
copy_exec /sbin/blkid /sbin

if [ -x /lib/udev/vio_type ]; then
copy_exec /lib/udev/vio_type /lib/udev
fi