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#!/bin/sh

## live-build(7) - System Build Scripts
## Copyright (C) 2006-2012 Daniel Baumann <daniel@debian.org>
##
## This program comes with ABSOLUTELY NO WARRANTY; for details see COPYING.
## This is free software, and you are welcome to redistribute it
## under certain conditions; see COPYING for details.


set -e

# Including common functions
[ -e "${LIVE_BUILD}/scripts/build.sh" ] && . "${LIVE_BUILD}/scripts/build.sh" || . /usr/lib/live/build.sh

# Setting static variables
DESCRIPTION="$(Echo 'installs silo into binary')"
HELP=""
USAGE="${PROGRAM} [--force]"

Arguments "${@}"

# Reading configuration files
Read_conffiles config/all config/common config/bootstrap config/chroot config/binary config/source
Set_defaults

if [ "${LB_BOOTLOADER}" != "silo" ]
then
	exit 0
fi

# Check image type
case "${LB_BINARY_IMAGES}" in
	iso*|hdd*|tar)
		;;

	netboot)
		# silo not required for sparc netbooting
		exit 0
		;;
esac

Echo_message "Begin installing silo..."

# Requiring stage file
Require_stagefile .build/config .build/bootstrap

# Checking stage file
Check_stagefile .build/binary_silo

# Checking silo templates
Check_templates silo

# Checking lock file
Check_lockfile .lock

# Creating lock file
Create_lockfile .lock

# Check architecture
Check_architectures sparc

# Checking depends
Check_package chroot/usr/sbin/silo silo

# Restoring cache
Restore_cache cache/packages.binary

# Installing depends
Install_package

# Local functions
Silo_live_entry ()
{
	LABEL="${1}"
	KERNEL="${2}"
	INITRD="${3}"
	APPEND="${4}"

	DIRECTORY="/$(basename ${DESTDIR_LIVE})"

	LINUX_LIVE="${LINUX_LIVE}\nimage=${DIRECTORY}/${KERNEL}\n"
	LINUX_LIVE="${LINUX_LIVE}\t  label=${LABEL}\n"
	LINUX_LIVE="${LINUX_LIVE}\t  initrd=${DIRECTORY}/${INITRD}\n"
	LINUX_LIVE="${LINUX_LIVE}\t  append=\"${INITFS:+boot=${INITFS} }config LB_BOOTAPPEND_LIVE ${APPEND}\"\n"
}

Silo_install_entry ()
{
	LABEL="${1}"
	KERNEL="${2}"
	INITRD="${3}"
	APPEND="${4}"

	DIRECTORY="/$(basename ${DESTDIR_INSTALL})"

	if [ "${LABEL}" != "rescue" ] && [ "${LABEL}" != "rescuegui" ]
	then
		APPEND="${APPEND} quiet"
	fi

	LINUX_INSTALL="${LINUX_INSTALL}\nimage=${DIRECTORY}/${KERNEL}\n"
	LINUX_INSTALL="${LINUX_INSTALL}\t  label=${LABEL}\n"
	LINUX_INSTALL="${LINUX_INSTALL}\t  initrd=${DIRECTORY}/${INITRD}\n"
	LINUX_INSTALL="${LINUX_INSTALL}\t  append=\"LB_BOOTAPPEND_LIVE ${APPEND} LB_BOOTAPPEND_INSTALL\"\n"
}

# Setting destination directories
DESTDIR_INSTALL="binary/install"
case "${LB_INITRAMFS}" in
	casper)
		INITFS="casper"
		DESTDIR_LIVE="binary/casper"
		;;

	live-boot)
		INITFS="live"
		DESTDIR_LIVE="binary/live"
		;;

	*)
		INITFS=""
		DESTDIR_LIVE="binary/boot"
		;;
esac

# Creating directory
mkdir -p "${DESTDIR_LIVE}"

# Setting boot parameters
if [ "${LB_UNION_FILESYSTEM}" != "aufs" ]
then
	LB_BOOTAPPEND_LIVE="${LB_BOOTAPPEND_LIVE} union=${LB_UNION_FILESYSTEM}"
fi

if [ -n "${LB_NET_COW_PATH}" ]
then
	Echo_error "Net cow not supported on silo"
	exit 1
fi

if [ "${LB_EXPOSED_ROOT}" != "false" ]
then
	LB_BOOTAPPEND_LIVE="${LB_BOOTAPPEND_LIVE} exposedroot"
fi

LB_BOOTAPPEND_LIVE="$(echo ${LB_BOOTAPPEND_LIVE} | sed -e 's|  ||')"

# Assembling kernel configuration

# Default entries
DEFAULT_FLAVOUR="$(echo ${LB_LINUX_FLAVOURS} | awk '{ print $1 }')"
DEFAULT_KERNEL="$(basename chroot/boot/vmlinuz-*${DEFAULT_FLAVOUR})"
DEFAULT_INITRD="initrd.img-$(echo ${DEFAULT_KERNEL} | sed -e 's|vmlinuz-||')"

Silo_live_entry "live" "${DEFAULT_KERNEL}" "${DEFAULT_INITRD}"

if [ "${LB_BOOTAPPEND_FAILSAFE}" != "none" ]
then
	Silo_live_entry "live-failsafe" "${DEFAULT_KERNEL}" "${DEFAULT_INITRD}" "${LB_BOOTAPPEND_FAILSAFE}"
fi

if [ "$(echo ${LB_LINUX_FLAVOURS} | wc -w)" -gt "1" ]
then
	for KERNEL in chroot/boot/vmlinuz-*
	do
		KERNEL_IMAGE="$(basename ${KERNEL})"
		KERNEL_VERSION="$(echo ${KERNEL_IMAGE} | sed -e 's|vmlinuz-||')"
		INITRD="initrd.img-${KERNEL_VERSION}"

		Silo_live_entry "live-${KERNEL_VERSION}" "${KERNEL_IMAGE}" "${INITRD}"
		Silo_live_entry "live-${KERNEL_VERSION}-failsafe" "${KERNEL_IMAGE}" "${INITRD}" "${LB_BOOTAPPEND_FAILSAFE}"
	done
fi

LINUX_LIVE="$(/bin/echo ${LINUX_LIVE} | sed -e 's|binary||g' -e 's|//|/|g')"

# Assembling debian-installer configuration
if [ "${LB_DEBIAN_INSTALLER}" != "false" ]
then
	VMLINUZ_DI="vmlinuz"
	INITRD_DI="initrd.gz"
	APPEND_DI="vga=normal"

	Silo_install_entry "linux" "${VMLINUZ_DI}" "${INITRD_DI}" "${APPEND_DI}"
	Silo_install_entry "install" "${VMLINUZ_DI}" "${INITRD_DI}" "${APPEND_DI}"
	Silo_install_entry "expert" "${VMLINUZ_DI}" "${INITRD_DI}" "priority=low ${APPEND_DI}"
	Silo_install_entry "rescue" "${VMLINUZ_DI}" "${INITRD_DI}" "rescue/enable=true ${APPEND_DI}"
	Silo_install_entry "auto" "${VMLINUZ_DI}" "${INITRD_DI}" "auto=true priority=critical ${APPEND_DI}"
fi

LINUX_INSTALL="$(/bin/echo ${LINUX_INSTALL} | sed -e 's|binary||g' -e 's|//|/|g')"

case "${LB_BINARY_IMAGES}" in
	iso*|hdd*)
		# Copying silo
		mkdir -p binary/boot

		case "${LB_BUILD_WITH_CHROOT}" in
			true)
				cp chroot/boot/second.b binary/boot
				;;

			false)
				cp /boot/second.b binary/boot
				;;
		esac

		cp -r "${TEMPLATES}"/* binary/boot

		if [ "${LB_DEBIAN_INSTALLER}" = "false" ]
		then
			rm -f binary/boot/debian.txt.install
		else
			mv binary/boot/debian.txt.install binary/boot/debian.txt
		fi

		# Configure silo templates
		sed -i -e "s|LINUX_LIVE|${LINUX_LIVE}|" \
		       -e "s|LINUX_INSTALL|${LINUX_INSTALL}|" \
		       binary/boot/silo.conf
		sed -i -e "s|LB_BOOTAPPEND_INSTALL|${LB_BOOTAPPEND_INSTALL}|" \
		       -e "s|LB_BOOTAPPEND_LIVE|${LB_BOOTAPPEND_LIVE}|" \
		       binary/boot/silo.conf
		sed -i -e "s|LB_DATE|$(date +%Y%m%d)|" \
		       -e "s|LB_VERSION|${VERSION}|" \
		       -e "s|LB_DISTRIBUTION|${LB_DISTRIBUTION}|" \
		       binary/boot/debian.txt
		;;
esac

# Saving cache
Save_cache cache/packages.binary

# Removing depends
Remove_package

# Creating stage file
Create_stagefile .build/binary_silo