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#!/sbin/runscript
# Copyright 1999-2012 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
# $Header: /var/cvsroot/gentoo-x86/sys-apps/kexec-tools/files/kexec.init-2.0.3,v 1.1 2012/03/18 07:46:02 jlec Exp $
depend() {
need localmount
}
image_path() {
local x= kver=$(uname -r) karch=$(uname -m)
BOOTPART="${BOOTPART:-/boot}"
for x in "${KNAME:-bzImage}" vmlinuz \
bzImage-${kver} vmlinuz-${kver} \
kernel-genkernel-${karch}-${kver} \
kernel-${kver} kernel-${karch}; do
if [[ -e "${BOOTPART}/${x}" ]] ; then
echo "${BOOTPART}/${x}"
return 0
fi
done
return 1
}
initrd_path() {
local x= kver=$(uname -r) karch=$(uname -m)
BOOTPART="${BOOTPART:-/boot}"
for x in "${INITRD:-initrd}" \
initrd.img-${kver} initrd-${kver}.img \
initrd-${kver} initramfs-${kver}.img \
initramfs-genkernel-${karch}-${kver} ; do
if [[ -e "${BOOTPART}/${x}" ]] ; then
echo "${BOOTPART}/${x}"
return 0
fi
done
return 1
}
load_image() {
if [[ "${KNAME}" = "-" ]]; then
ebegin "Disabling kexec"
kexec -u
eend $?
return $?
fi
BOOTPART="${BOOTPART:-/boot}"
local img="$(image_path)" initrd="$(initrd_path)" mounted=false initrdopt=
if [[ -z "${img}" ]] || [[ -z "${initrd}" ]]; then
# If we cannot find our image, try mounting ${BOOTPART}
if ! grep -q " ${BOOTPART} " /proc/mounts; then
ebegin "Mounting ${BOOTPART}"
mount "${BOOTPART}" && mounted=true
eend $? || return $?
img="$(image_path)"
initrd="$(initrd_path)"
fi
fi
if [[ -z "${img}" ]]; then
eerror "No kernel image found in ${BOOTPART}!"
${mounted} && umount "${BOOTPART}"
return 1
else
ebegin "Loading kernel image ${img} for kexec"
fi
[[ -n "${ROOTPART}" ]] || \
ROOTPART="$(readlink -f "$(sed -n '/^\/[^ ]* \/ / s,^\([^ ]*\).*,\1,p' /proc/mounts)")"
[[ -n "${KPARAM}" ]] || KEXEC_OPT_ARGS+=" --reuse-cmdline"
[[ -n "${initrd}" ]] && [[ -e "${initrd}" ]] && initrdopt="--initrd=${initrd}"
einfo " Setting kexec with ${KEXEC_OPT_ARGS} -l ${img} root=${ROOTPART} ${KPARAM} ${initrdopt}"
kexec ${KEXEC_OPT_ARGS} -l "${img}" --append="root=${ROOTPART} ${KPARAM}" ${initrdopt}
local res=$?
${mounted} && umount "${BOOTPART}"
eend ${res}
return ${res}
}
start() {
if [[ "${LOAD_DURING_SHUTDOWN:-yes}" = "yes" ]]; then
image_path > /dev/null || \
ewarn "Cannot find kernel image. Please make sure a valid kernel image is present before reboot."
return 0
else
ebegin "Configuring kexec"
load_image
eend $?
fi
}
stop() {
[[ "${LOAD_DURING_SHUTDOWN:-yes}" != "yes" ]] && return 0
if ! yesno $RC_REBOOT; then
einfo "Not rebooting, so disabling"
kexec -u
return 0
fi
if [[ -f /nokexec ]]; then
einfo "Not using kexec during reboot"
rm -f /nokexec
kexec -u
return 0
fi
ebegin "Configuring kexec"
load_image
eend $?
}
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