Gentoo-Upgrade/sbin/kernel-getlast.sh

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#!/bin/bash
let FORCE_REBUILD=0
KERNEL_REBUILD_ARGS=""
[ -f /etc/gentoo-upgrade.conf ] && source /etc/gentoo-upgrade.conf
# available parameters
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eval set -- "`getopt -o h,q --long help,force-rebuild,mrproper,quiet -- \"$@\"`"
while true ; do
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case "$1" in
-h|--help)
echo "Usage: kernel-getlast.sh [keys]..."
echo "Keys:"
echo -e "-h, --help\t\t\tShow this help and exit."
echo -e "--force-rebuild\t\t\tForce to rebuild kernel even if no new versions found."
echo -e "--mrproper\t\t\tClean kernel sources before rebuild."
echo -e "-q, --quiet\t\t\tMake kernel configuration non-interactive."
echo
echo -e "This program works on any GNU/Linux with GNU Baurne's shell"
echo -e "Report bugs to <mecareful@gmail.com>"
exit 0
;;
--force-rebuild) let FORCE_REBUILD=1 ; shift ;;
--mrproper) KERNEL_REBUILD_ARGS="$KERNEL_REBUILD_ARGS --mrproper" ; shift ;;
-q|--quiet) KERNEL_REBUILD_ARGS="$KERNEL_REBUILD_ARGS --silent" ; shift ;;
--) shift ; break ;;
*) echo "Internal error!" ; exit -1 ;;
esac
done
current_kernel_src=`kernel-config list | grep \* | cut -d" " -f6`
if [ "" == "$current_kernel_src" ]; then
current_kernel_src=`readlink -f /usr/src/linux`
current_kernel_src=${current_kernel_src##*/}
fi
[ "" == "$current_kernel_src" ] && echo "Cann't determine current kernel sources ;-(" && exit -1
kernel_regex=`echo -n $current_kernel_src | sed 's~[0-9]*\.[0-9]*\.[0-9]*~[0-9]*\.[0-9]*\.[0-9]*~ ; s~-r[0-9]*$~~; s~$~\\\(-r[0-9]\\\)\\\?~'`
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[ "" == "$kernel_regex" ] && echo "kernel_regex build failed ;-(" && exit -1
new_kernel=`kernel-config list | cut -d" " -f6 | grep ^$kernel_regex$ | sort -V | tail -n1`
[ "" == "$new_kernel" ] && echo "Couldn't find appropriate new kernel version ;-(" && exit -1
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# remounting file systems ro->rw
for fs in $RW_REMOUNT; do
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if [[ "$fs" =~ ^/+usr/*$ || "$fs" =~ ^/+boot/*$ ]]; then
echo "remounting $fs -> rw"
mount -o remount,rw $fs
[ 0 -ne $? ] && echo "mount -o remount,rw $fs failed ;-( =======" && exit -1
fi
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done
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kernel-config set $new_kernel
[ 0 -ne $? ] && echo "kernel-config set $new_kernel failed ;-(" && exit -1
kernel-clean.sh
[ 0 -ne $? ] && echo "kernel-clean.sh failed ;-(" && exit -1
vmlinuz_file=/boot/`echo $new_kernel | sed 's~^linux~vmlinuz~'`
[ "" == "$vmlinuz_file" ] && echo "vmlinuz_file == \"\"" && exit -1
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march=`uname -m`
genkernel_file=/boot/`echo $new_kernel | sed "s~^linux~kernel-genkernel-${march}~"`
[ "" == "$genkernel_file" ] && echo "genkernel_file == \"\"" && exit -1
if [[ ! -f "$vmlinuz_file" && ! -f "$genkernel_file" || 1 -eq $FORCE_REBUILD ]]; then
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kernel-rebuild.sh $KERNEL_REBUILD_ARGS
[ 0 -ne $? ] && echo "kernel-rebuild.sh $KERNEL_REBUILD_ARGS failed" && exit -1
fi
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# remounting file systems rw->ro
for fs in $RO_REMOUNT; do
if [[ "$fs" =~ ^/+usr/*$ || "$fs" =~ ^/+boot/*$ ]]; then
echo "remounting $fs -> ro"
mount -o remount,ro -force $fs
[ 0 -ne $? ] && echo "mount -o remount,ro -force $fs failed ;-( =======" && exit -1
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fi
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done
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exit 0