#!/bin/sh
# --- SDE-COPYRIGHT-NOTE-BEGIN ---
# This copyright note is auto-generated by ./scripts/Create-CopyPatch.
#
# Filename: target/share/initramfs/pack_and_push.sh
# Copyright (C) 2008 - 2009 The OpenSDE Project
#
# More information can be found in the files COPYING and README.
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; version 2 of the License. A copy of the
# GNU General Public License can be found in the file COPYING.
# --- SDE-COPYRIGHT-NOTE-END ---

die() { echo "ERROR: $*" >&2; exit 127; }

usage() {
	[ $# -eq 0 ] || echo "ERROR: $*"
	cat <<-EOT
	Usage: ${0##*/} -c <config_build> -e <config_early> [-s <suffix>] [<target>]
	EOT
	exit 1
}

rsyncopt="-ztP --inplace"
config_build=
config_early=
SUFFIX=
force=

while [ $# -gt 0 ]; do
	case "$1" in
		-c|--cfg)
			config_build="$2"; shift ;;
		-e|--early)
			config_early="$2"; shift ;;
		-s|--suffix)
			SUFFIX="$2"; shift ;;
		-f|--force)
			force=yes ;;
		--)
			shift; break ;;
		-*)
			usage "$1: Invalid option."
			;;
		*)
			break
			;;
	esac
	shift
done

case "$#" in
	0)	TARGETDIR= ;;
	1)	TARGETDIR="$1"; shift ;;
	*)	usage "Too many arguments." ;;
esac

[ -n "$config_build" -a -n "$config_early" ] || usage

BUILD=$(grep SDECFG_ID= config/$config_build/config | cut -d"'" -f2)
EARLY=$(grep SDECFG_ID= config/$config_early/config | cut -d"'" -f2)

[ -n "$BUILD" -a -d "build/$BUILD/TOOLCHAIN" ] ||
	die "$config_build: Invalid config."

[ -n "$EARLY" -a -d "build/$EARLY/TOOLCHAIN" ] ||
	die "$config_early: Invalid config."

BUILD="build/$BUILD"
EARLY="build/$EARLY"
INITRD="$EARLY/TOOLCHAIN/initrd.img"

KERVER=$(cd "$BUILD/boot" && ls -1 vmlinuz_* | tail -n1 | cut -d_ -f2-)

[ -n "$KERVER" ] || die "$config_build: no kernel found."
[ -s "$INITRD" ] || die "$config_early: no initrd template found."

echo "packing: $config_build + $config_early"

vmlinuz="$BUILD/boot/vmlinuz_$KERVER"
initrd="$BUILD/boot/initrd-${SUFFIX:-$KERVER}.img"

errno=0
if [ -n "$force" -o "$vmlinuz" -nt "$initrd" -o "$INITRD" -nt "$initrd" ]; then
	"$BUILD/usr/sbin/mkinitramfs" -R "$BUILD" -T "$INITRD" ${SUFFIX:+-s "$SUFFIX"} "$KERVER"
	errno=$?
else
	echo "WARNING: skipping new image creation, use -f to force it."
fi

[ $errno -eq 0 ] || exit $errno

[ -s "$vmlinuz" ] || die "\${root}/boot/vmlinuz_$KERVER: not found."
[ -s "$initrd" ] || die "\${root}/boot/initrd-$KERVER.img: not found."

if [ -n "$TARGETDIR" ]; then
	source=$(mktemp -d -p "$BUILD/tmp/")
	[ -d "$source" ] || die "failed to create tempdir."

	[ -n "$SUFFIX" ] || SUFFIX="$KERVER"

	cp -l "$initrd" "$source/initrd-$SUFFIX.img"
	cp -l "$vmlinuz" "$source/vmlinuz_$SUFFIX"

	if [ $UID -eq 0 -a -n "$SUDO_UID" ]; then
		echo "pushing as $SUDO_USER to $TARGETDIR/"
		chown -R "$SUDO_UID:$SUDO_GID" "$source/"
		su $SUDO_USER -c "rsync $rsyncopt '$source'/*  '$TARGETDIR/'"
	else
		echo "pushing to $TARGETDIR/"
		rsync $rsyncopt "$source"/*  "$TARGETDIR/"
	fi

	rm -rf "$source"
fi