#!/bin/sh

# Put this script in /etc/mkinitrd/scripts/ and regenerate your initrd (by 
# "mkinitrd -o /boot/initrd.img-`uname -r`" or reinstall your kernel package.

# as the script will be executed by "run-parts", you will have to follow some rules:
#  - the name may not contain special characters (e.g. a dot!)
#  - the script has to be executable (chmod +x ...)
#  - check "man run-parts" for details ...

# Figure out the right /proc directory
# (depends on the current version of suspend2)
PROC_DIR=/proc/software_suspend
[ -d "$PROC_DIR" ] || PROC_DIR=/sys/power/suspend2

# Figure out swap device from the first device listed in /proc/swaps
swap_device=`awk 'BEGIN{getline;getline;print$1}' < /proc/swaps`
swap_type=`awk 'BEGIN{getline;getline;print$2}' < /proc/swaps`

if [ "x$swap_type" = "xpartition" ] ; then
	# use the device identifier instead the the device name (/dev/hda1 -> 0301)
	# otherwise you would have to create the device inside of the initrd
    resume2=`perl -e "@a=stat '$swap_device';printf 'swap:%04x', \\$a[6]"`
else
    echo "Unable to determine swap device! You will need to set resume2= on your"
    echo "kernel command-line manually."
fi

[ -n "$resume2" ] && resume2="echo $resume2 > $PROC_DIR/resume2"

# Modify linuxrc script

mv $INITRDDIR/linuxrc $INITRDDIR/linuxrc.real
cat <<EOT > $INITRDDIR/linuxrc
#!/bin/sh

export PATH=/sbin:/bin

mount -t proc proc /proc
. /loadmodules
$resume2
echo > $PROC_DIR/do_resume
umount /proc
. ./linuxrc.real
EOT

chmod 777 $INITRDDIR/linuxrc