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#!/bin/bash
#This script is used for creating a new grub menu item when update kernel.
#It uses the new version-number as the id and display.
NEW_KERN_VERSION=$1
GRUB_CFG=$2
OP_TYPE=$3
#########################################################
# Description: SetupOS_Initrd_for_softraid
# Input none
# Return: 0: SUCCESS
# 1: Internal Error.
#########################################################
function SoftRaid_Initrd()
{
SI_INITRD=initramfs-${NEW_KERN_VERSION}.img
mkdir -p /initramfs/usr/lib/systemd/system
mkdir -p /initramfs/etc/systemd/system/default.target.wants
mdadm --detail --scan >> /initramfs/etc/mdadm.conf
cd /initramfs
cat <<EOF > /initramfs/usr/lib/systemd/assemble-md
#!/bin/bash
declare -i count=5
if [ -f /etc/mdadm.conf ];then
while (( count > 0 )) ;
do
sleep 10s
let count--;
if [ -e "/dev/sda1" ];then
mdadm -A -s
break;
fi
echo " waiting harddisk get online .... countdown ${count} "
done
fi
EOF
if [ $? -ne 0 ];then
g_Log_Error "generate assemble-md failed"
return 1
fi
chmod -R 755 /initramfs/usr/lib/systemd/assemble-md
cat << EOF > /initramfs/usr/lib/systemd/system/assemble-md.service
[Unit]
Description=assemble the md
DefaultDependencies=no
After=local-fs-pre.target systemd-udev-trigger.service systemd-udevd.service systemd-udevd-control.socket systemd-udevd-kernel.socket
Before=local-fs.target diskconf-reload.service
[Service]
Type=oneshot
RemainAfterExit=yes
ExecStart=/usr/lib/systemd/assemble-md
StandardOutput=journal+console
[Install]
WantedBy=default.target
EOF
if [ $? -ne 0 ];then
g_Log_Error "generate assemble-md.service failed"
return 1
fi
cp /initramfs/usr/lib/systemd/system/assemble-md.service /initramfs/etc/systemd/system/default.target.wants/
dracut --force --include /initramfs / /boot/${SI_INITRD} ${NEW_KERN_VERSION}
rm -r /initramfs
cd -
}
if [ "x${NEW_KERN_VERSION}" == "x" ] || [ "x${GRUB_CFG}" == "x" ] || [ "x${OP_TYPE}" == "x" ] ; then
echo "There some mkgrub-menu parameter is null,please check "
exit 1;
fi
if [ "update" = "${OP_TYPE}" ]; then
DEF_VER=`grep -nr "default=" $GRUB_CFG|awk -F = '{print $2}'` ;
START_LN=`grep -nr " --id ${DEF_VER}" $GRUB_CFG|awk -F: '{print $1}'` ;
/bin/sed -rn "p;${START_LN},/}/H;$ {g;s/^\n//;p}" $GRUB_CFG > tempfile ;
/bin/sed -i "$[START_LN+5],/ --id ${DEF_VER}/{s/ --id ${DEF_VER}/ --id linux-${NEW_KERN_VERSION}/}" tempfile ;
OLDLABLE=`sed -n "$[START_LN+5],/ --id ${DEF_VER}/p" tempfile |grep menuentry |tail -1 |awk '{print $2}' |sed "s/\"//g" `
/bin/sed -i "$[START_LN+5],/ --id ${DEF_VER}/{s/${OLDLABLE}/EulerOS-${NEW_KERN_VERSION}/}" tempfile ;
/bin/sed -i "/ --id linux-${NEW_KERN_VERSION}/,/}/{s/`uname -r`/${NEW_KERN_VERSION}/} " tempfile ;
/bin/sed -i "s/default=${DEF_VER}/default=linux-${NEW_KERN_VERSION}/" tempfile ;
mv tempfile $GRUB_CFG
if [ `cat /proc/mdstat |wc -l ` -gt 2 ]; then
SoftRaid_Initrd > /dev/null 2>&1
fi
fi
if [ "remove" = "${OP_TYPE}" ]; then
/bin/sed -i "/ --id linux-${NEW_KERN_VERSION}/,/}/d" $GRUB_CFG
DEF_VER=`grep -nr "menuentry" $GRUB_CFG |head -1 |awk '{print $4}' |sed "s/{//g" `
/bin/sed -i "s/default=linux-${NEW_KERN_VERSION}/default=${DEF_VER}/" $GRUB_CFG
fi
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