#!/bin/sh -e

PREREQS=""

prereqs() { echo "$PREREQS"; }

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

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

mkdir -p $DESTDIR/lib/systemd
copy_exec /lib/systemd/systemd-udevd      /lib/systemd
copy_exec /bin/udevadm    /bin

# copy compat symlink
cp -a /sbin/udevadm $DESTDIR/sbin/udevadm

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

# copy .link files containing interface naming definitions
mkdir -p $DESTDIR/lib/systemd/network/
find /lib/systemd/network -name '*.link' -execdir cp -pt $DESTDIR/lib/systemd/network/ '{}' +
if [ -d /etc/systemd/network ]; then
  find /etc/systemd/network -name '*.link' -execdir cp -pt $DESTDIR/lib/systemd/network/ '{}' +
fi

mkdir -p $DESTDIR/lib/udev/rules.d/
for rules in 50-firmware.rules 50-udev-default.rules 60-persistent-storage.rules \
        61-persistent-storage-android.rules 73-special-net-names.rules \
        73-usb-net-by-mac.rules 75-net-description.rules \
        80-net-setup-link.rules 80-drivers.rules; do
  if   [ -e /etc/udev/rules.d/$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

# now copy all custom udev rules which don't have an equivalent in /lib (e. g.
# 70-persistent-net.rules or similar); They might contain network names or
# other bits which are relevant for the initramfs.
for rules in /etc/udev/rules.d/*.rules; do
  if [ -e "$rules" ] && [ ! -e "/lib/${rules#/etc/}" ]; then
    cp -p $rules $DESTDIR/lib/udev/rules.d/
  fi
done

for program in ata_id scsi_id; do
  copy_exec /lib/udev/$program /lib/udev
done
copy_exec /sbin/blkid /sbin
