#!/bin/sh
# Ensure grub will load the correct kernel on resume from hibernate,
# TODO: This is rather redhat specific, and very grub specific.
default_resume_kernel()
{
local g2reboot
[ "$1" = "suspend" ] && return $NA
case $(uname -m) in
i?86|x86_64|athlon)
;;
*) # this is only valid for x86 and x86_64
return $NA
;;
esac
[ -x /sbin/grubby -a \( -x /sbin/grub -o -r /etc/grub2.cfg \) ] || \
return $NA
[ -e "/boot/vmlinuz-$(uname -r)" ] || return 1
out=$(/sbin/grubby --info /boot/vmlinuz-$(uname -r) |grep index | \
head -n 1)
[ -n "${out}" ] || return 1
current=${out#index=}
if [ -r /etc/grub2.cfg ]; then
# to enable this functionality in grub2
# GRUB_DEFAULT=saved is needed in /etc/default/grub
# if you want to be able to by-pass the selection in the
# boot menu, also use GRUB_SAVEDEFAULT=true
g2reboot=`which grub2-reboot 2>/dev/null` || \
g2reboot=`which grub-reboot 2>/dev/null` || return $NA
$g2reboot ${current} > /dev/null
else
echo "savedefault --default=${current} --once" | \
/sbin/grub --device-map=/boot/grub/device.map \
--batch --no-floppy --no-curses >/dev/null
fi
return 0
}
case "$1" in
hibernate|suspend)
default_resume_kernel $2
;;
*) exit $NA
;;
esac
Mini Shell