ACC SHELL

#! /bin/bash
#
# Copyright (c) 2001-2005 SuSE Linux AG, Nuernberg, Germany.
# All rights reserved.
#
# /etc/init.d/boot.swap
#
### BEGIN INIT INFO
# Provides:          boot.swap
# Required-Start:    boot.rootfsck $local_fs
# Should-Start:      boot.md boot.lvm boot.evms boot.crypto
# Required-Stop:     $local_fs
# Should-Stop:       boot.lvm boot.crypto
# Default-Start:     B
# Default-Stop:
# Short-Description: start rest of swap devices
# Description:       start rest of swap devices
### END INIT INFO

. /etc/rc.status
. /etc/sysconfig/kernel


get_swap_id() {
    local line dev min type;
    type -p fdisk >/dev/null || return
    fdisk -l 2>&1 | while read line; do
	case "$line" in
	/*Linux\ [sS]wap*)
	    echo "${line%% *}"
	    ;;
	Disk\ /dev/*\ doesn*)
	    dev="${line##*/}"
	    dev="${dev%% *}"
	    type -p parted >/dev/null || continue
	    while read min type; do
		case "$type" in
		*type=82|*type=82,*) echo /dev/${dev}${min}
		esac
	    done < <(parted -s /dev/$dev print quit 2>/dev/null)
	    ;;
	esac
    done
}

check_swap_sig () {
    local part="$(get_swap_id)"
    local where what type rest p c
    while read where what type rest ; do
	test "$type" = "swap" || continue
	c=continue
	for p in $part ; do
	    if test "$p" -ef "$where"; then
		c=true
		break
	    fi
	done
	$c
	case "$(dd if=$where bs=1 count=6 skip=4086 2>/dev/null)" in
	S1SUSP|S2SUSP|ULSUSP) mkswap $where
	esac
    done < /etc/fstab
}

enable_ps3_vram_swap () {
	local prop
	local ps3vram_swap=/dev/mtdblock0
	if test -f /proc/device-tree/model ; then
		read prop < /proc/device-tree/model
		case "$prop" in
			SonyPS3)
				echo "Activating swap to video ram"
				modprobe -v ps3vram
				modprobe -v mtdblock
				sleep 1
				if test -b $ps3vram_swap ; then
					mkswap -L ps3_vram_swap $ps3vram_swap
					swapon -v -p 42 $ps3vram_swap
				fi
			;;
		esac
	fi
}

rc_reset

case "$1" in
    start)
	#
	# After mounting we may activate swap files in /etc/fstab
	# .. this should work now with the new swapon behavio(u)r
	#
	# Check for swap signature only if sysfs is not mounted
	# (then we have no way of knowing if swsuspend is enabled)
	# or if /sys/power exists (then we are sure it is enabled).
	if [ ! -d "/sys/devices" ] || [ -d "/sys/power" ]; then
	    check_swap_sig
	fi
	enable_ps3_vram_swap
	echo "Activating remaining swap-devices in /etc/fstab..."
	swapon -a &> /dev/null
	rc_status -v1 -r
	;;
    stop)
	echo "Turning off swap files"
	if test -r /proc/swaps ; then
	    # Use cat and a pipe because swapoff changes
	    # /proc/swaps during direct read call
	    cat /proc/swaps | \
	    while read des type rest ; do
		# Release swapfiles and partitions on other subsystems
		# we want to shut down like LVM or MD
		# so we only keep /dev/sd* for the moment
		case $des in
		    /dev/sd*) continue ;;
		esac
		swapoff $des &> /dev/null
	    done
	    sync
	fi
	;;
    restart)
	$0 stop
	$0 start
	;;
    status)
	# assume we have been run (otherwise this would mean parsing fstab manually)
	rc_reset
	rc_status -v
	;;
    *)
	echo "Usage: $0 {start|stop|status|restart}"
	exit 1
	;;
esac

rc_exit