#!/bin/bash

source /etc/sysconfig/rc
source $rc_functions
source /etc/mageversion


#source kernel config if exists
[ -f /etc/conf.d/kernel ] && source /etc/conf.d/kernel

#some needed functions functions
populate_udev() {
		/sbin/udevstart

		#not provided by sysfs but needed
		ln -snf /proc/self/fd /dev/fd
		ln -snf fd/0 /dev/stdin
		ln -snf fd/1 /dev/stdout
		ln -snf fd/2 /dev/stderr
		ln -snf /proc/kcore /dev/core
		ln -snf /proc/asound/oss/sndstat /dev/sndstat

		#create problematic directories
		mkdir -p /dev/{pts,shm}

		#same as /dev/.devfsd
		touch /dev/.udev
		
		return 0
}

trap "" INT QUIT TSTP

[ "$1" != "" ] && runlevel=$1

if [ "$runlevel" = "sysinit" ]
then
	echo
	echo -e "${COLGREEN}Starting ${COLBLUE}MAGELLAN (v${MAGEVER}) ${COLGREEN}Linux${COLDEFAULT}"
	echo -e "\"I'm not a Gentoo-System, I'm a pure LFS\""
	echo

	#mount proc filesystem, needed for bootsplash;
	#no use of '/etc/rc.d/init.d/mountproc' anymore
	if [ ! -e /proc/mounts ]
	then
		echo -e ${COLOREDSTAR}"Mounting proc file system ..."
		mount -n /proc
		evaluate_retval
	fi

	#set default verbose level for kernel messages
	[ -z "${RC_VERBOSE_LEVEL}" ] && RC_VERBOSE_LEVEL=3
	echo "${RC_VERBOSE_LEVEL}" > /proc/sys/kernel/printk

	#mount sys file system before udev or devfs (kernel-2.6)
	if [ "$(kernel_major_version)" == "2.6" ]
	then
		if [ -d /sys ]
		then
			echo -e ${COLOREDSTAR}"Mounting sysfs file system ..."
			mount -t sysfs none /sys
			evaluate_retval
		else
			echo -e ${COLORED}"Fatal: mountpoint /sys missing ..."
			echo -e ${COLYELLOW}"Please create the directory /sys (mkdir -p /sys)."
			echo -e ${COLYELLOW}"It's essential for a 2.6 kernel."
		fi
	fi

	## load devfs ##
	#load devfs only with a 2.4 kernel or its really wanted with a 2.6
	if [ "$(kernel_major_version)" == "2.4" -o "${RC_USED_DEV}" == "devfs" ]
	then
		# start devfsd daemon, needed for bootsplash;
		# no use of '/etc/rc.d/init.d/devfs' anymore
		# check if devfs was mounted by the kernel,
		# if not mount it (mbuild_livecd needs this one)
		if [ ! -e /dev/.devfsd ]
		then
			echo -e ${COLOREDSTAR}"Mounting devfs file system ..."
			mount -t devfs devfs /dev
			evaluate_retval
		fi

	
		if [ -e /dev/.devfsd ]
		then
			echo -e ${COLOREDSTAR}"Starting devfsd ..."
			## directory /lib/dev-state !must! exists ##
			/sbin/devfsd /dev &> /dev/null
			evaluate_retval
		else
			echo -e ${COLRED}"No devfs filesystem found ..."
			echo -e ${COLYELLOW}"Your Kernel doesn't support the devfs filesystem."
			echo -e ${COLYELLOW}"Devfs is necessary to run Magellan-Linux."
			echo -e ${COLYELLOW}"Please make shure that this is enabled in your kernel."
			echo
			echo -e ${COLYELLOW}"Press any key to shutdown the system safely ..."
			read
			$rc_base/init.d/halt
		fi

	fi

	#### load udev ####
	#load udev only with a 2.6 kernel
	if [ "$(kernel_major_version)" == "2.6" -a "${RC_USED_DEV}" == "udev" ]
	then
#		#first at all unmount devfs if this was loaded by the kernel
#		DEVFS_MOUNTED="$(cat /proc/mounts | grep devfs | cut -d ' ' -f3)"
#		if [ "${DEVFS_MOUNTED}" == "devfs" ]
#		then
#			umount -n /dev \
#				&& echo "debug: unmounted devfs successfully" \
#				|| echo "debug: unmounting devfs failed"
#		fi

		#create a ramdisk for populating udev
		echo -e ${COLOREDSTAR}"Mounting ramfs at /dev ..."
		mount -n -t ramfs none /dev
		evaluate_retval

		#if a device tarball exists load it and if it is activated
		echo -e ${COLOREDSTAR}"Configurating system to use udev ..."
		if [ "${RC_DEVICE_TARBALL}" = "yes" ]
		then
			echo -e ${COLOREDSTAR}"  Populating /dev with with device nodes ..."
			tar -jxpf /lib/udev-state/devices.tar.bz2 -C /dev
			evaluate_retval
		fi

		#now load udev
		populate_udev

		#if hotplug support exists in the kernel use it to manage udev
		if [ -e /proc/sys/kernel/hotplug -a -x /sbin/hotplug ]
		then
			echo -e ${COLOREDSTAR}"  Using /sbin/hotplug for udev management ..."

		elif [ -e /proc/sys/kernel/hotplug ]
		then
			echo -e ${COLOREDSTAR}"  Setting /sbin/udev as hotplug agent ..."
			echo "/sbin/udev" > /proc/sys/kernel/hotplug
		else
			echo -e ${COLOREDSTAR}${COLYELLOW}"  Kernel was not compiled with hotplug support !"
		fi
		evaluate_retval
	fi

	
	## load devpts ##
	# devfs/udev with 2.6 has no ptys, so devpts is also needed
	if [ $(kernel_major_version) == 2.6 ]
	then
		# check if we really have devpts support
		DEVPTS_CHECK="$(cat /proc/filesystems | grep devpts | cut -d $'\t' -f2)"
		DEVFS_MOUNTED="$(cat /proc/mounts | grep devfs | cut -d ' ' -f3)"
		if [ "${DEVPTS_CHECK}" == devpts ]
		then
			# /dev/pts maybe not exists.
			# We only create this directory only if devfs was mounted,
			# or it will fail as / is still mounted readonly
			if [ ! -d "/dev/pts" \
				-a -e "/dev/.devfsd" \
				-a  "${DEVFS_MOUNTED}" == "devfs" ]
			then
				mkdir -p /dev/pts &> /dev/null || \
					echo "Could not create /dev/pts !"
			fi
		
			#now mount devpts
			if [ -d /dev/pts ]
			then
				echo -e ${COLOREDSTAR}"Mounting devpts at /dev/pts ..."
				mount -n -t devpts -o gid=4,mode=0620 none /dev/pts
				evaluate_retval
			fi
		else
			# devpts is not supported, give a warning
			echo -e ${COLRED}"No devpts filesystem found ..."
			echo -e ${COLYELLOW}"Your Kernel doesn't support the devpts filesystem."
			echo -e ${COLYELLOW}"Devfs with a kernel-2.6.x needs devpts,"
			echo -e ${COLYELLOW}"or no pty's are available."
			echo -e ${COLYELLOW}"Please make shure that this is enabled in your kernel."
			echo
			echo -e ${COLYELLOW}"Press any key to continue ..."
			read
		fi
	fi

	### services state dir ###
	echo -e ${COLOREDSTAR}"Mounting tmpfs at ${svcdir} ..."
	mount -n -t tmpfs tmpfs "${svcdir}" -o rw,mode=0644,size="${svcsize}"k
	evaluate_retval

	#load bootsplash
	splash "rc_init" "${runlevel}"
fi



if [ "$runlevel" == "0" ]
then

	#load bootsplash
	splash "rc_init" "${runlevel}"


	# if requested save devices to a device tarball before halt
	# only for kernels >=2.6 *and* udev
	# make shure that udev is mounted but *not* devfs --> /dev/.devfsd
	if [ "${RC_DEVICE_TARBALL}" = "yes" \
		-a -e /dev/.udev \
		-a ! -e /dev/.devfsd \
		-a ! -e /.bootdev ]
	then
		echo -e ${COLOREDSTAR}"Saving /dev device nodes ..."
		cd /dev
		tar -jclpf "/tmp/devices-$$.tar.bz2" * &> /dev/null
		mv -f "/tmp/devices-$$.tar.bz2" /lib/udev-state/devices.tar.bz2
		evaluate_retval
	fi
fi

if [ "$runlevel" == "6" ]
then

	#load bootsplash
	splash "rc_init" "${runlevel}"

	# if requested save devices to a device tarball before halt
	# only for kernels >=2.6 *and* udev
	# make shure that udev is mounted but *not* devfs --> /dev/.devfsd
	if [ "${RC_DEVICE_TARBALL}" = "yes" \
		-a -e /dev/.udev \
		-a ! -e /dev/.devfsd \
		-a ! -e /.bootdev ]
	then
		echo -e ${COLOREDSTAR}"Saving /dev device nodes ..."
		cd /dev
		tar -jclpf "/tmp/devices-$$.tar.bz2" * &> /dev/null
		mv -f "/tmp/devices-$$.tar.bz2" /lib/udev-state/devices.tar.bz2
		cd ..
		evaluate_retval
	fi
fi

if [ "$runlevel" = "" ]
then
	echo "Usage: $0 <runlevel>" >&2
	exit 1
fi

previous=$PREVLEVEL
[ "$previous" = "" ] && previous=N

if [ ! -d $rc_base/rc$runlevel.d ]
then
	echo "$rc_base/rc$runlevel.d does not exist"
	exit 1
fi

if [ "$previous" != "N" ]
then
	for i in $(ls -v $rc_base/rc$runlevel.d/K* 2> /dev/null)
	do

		check_script_status

		suffix=${i#$rc_base/rc$runlevel.d/K[0-9][0-9]}
		prev_start=$rc_base/rc$previous.d/S[0-9][0-9]$suffix
		sysinit_start=$rc_base/rcsysinit.d/S[0-9][0-9]$suffix

		if [ "$runlevel" != "0" ] && [ "$runlevel" != "6" ]
		then
			if [ ! -f $prev_start ] && [ ! -f $sysinit_start ]
			then
				$WARNING
				echo "$i can't be executed because it was"
				echo "not started in the previous runlevel ($previous)"
				$NORMAL
				continue
			fi
		fi

		$i stop
		error_value=$?

		if [ "$error_value" != "0" ]
		then
			print_error_msg
		fi
	done
fi

for i in $( ls -v $rc_base/rc$runlevel.d/S* 2> /dev/null)
do
	if [ "$previous" != "N" ]
	then
		suffix=${i#$rc_base/rc$runlevel.d/S[0-9][0-9]}
		stop=$rc_base/rc$runlevel.d/K[0-9][0-9]$suffix
		prev_start=$rc_base/rc$previous.d/S[0-9][0-9]$suffix

		[ -f $prev_start ] && [ ! -f $stop ] && continue
	fi

	check_script_status

	$i start
	error_value=$?

	if [ "$error_value" != "0" ]
	then
		print_error_msg
	fi
done