#!/bin/sh
set -e

# initramfs hook to include dhcpcd as DHCP client

PREREQ=""

# Output pre-requisites
prereqs()
{
	echo "$PREREQ"
}

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

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

if ! [ -x /usr/sbin/dhcpcd ]; then
        exit 0
fi

copy_exec /usr/sbin/dhcpcd
copy_exec /usr/lib/dhcpcd/dhcpcd-run-hooks
copy_file config /usr/lib/dhcpcd/dhcpcd-hooks/30-hostname
copy_file config /usr/share/initramfs-tools/dhcpcd-hooks/10-mtu /usr/lib/dhcpcd/dhcpcd-hooks/10-mtu
copy_file config /usr/share/initramfs-tools/dhcpcd-hooks/70-net-conf /usr/lib/dhcpcd/dhcpcd-hooks/70-net-conf
mkdir -p "${DESTDIR}/var/lib/dhcpcd"

mkdir -p "${DESTDIR}/etc"
cat >"${DESTDIR}/etc/dhcpcd.conf" <<EOF
# Options from default configuration
persistent
vendorclassid
option domain_name_servers, domain_name, domain_search
option classless_static_routes
option interface_mtu
option host_name
option rapid_commit
require dhcp_server_identifier
slaac private

# initramfs-tools specific options
duid ll
env hostname_fqdn=no
EOF
grep ^dhcpcd: /etc/passwd >>"${DESTDIR}/etc/passwd" || true

# find the multiarch lib dir (for example /lib/x86_64-linux-gnu)
multiarch_dir=$(ldd /usr/sbin/dhcpcd | sed -En 's;^.*/lib(/lib[^/]*prof)?/([^/]+)/libc\.so\..*$;\2;p')
copy_exec "/usr/lib/${multiarch_dir}/dhcpcd/dev/udev.so"