dolilo genkernel+bootsplash

dolilo (text/plain), 4.42 KB, created by Tony Vroon (RETIRED) on 2004-02-08 12:42:12 UTC

#!/bin/bash

# Copyright 1999-2004 Gentoo Technologies, Inc.
# Distributed under the terms of the GNU General Public License v2
# $Header: $

rootdev="$(mount | grep "on / " | cut -f1 -d " ")"
bootdev="$(echo ${rootdev} | sed "s:\(.*\).$:\1:")"
fstabstate="$(cat /etc/fstab | awk '!/^#|^[[:blank:]]+#|^\/dev\/BOOT/ {print $2}' | egrep "^/boot$" )"
procstate="$(cat /proc/mounts | awk '{print $2}' | egrep "^/boot$" )"
proc_ro="$(cat /proc/mounts | awk '{ print $2, $4 }' | sed -n '/\/boot/{ /[ ,]\?ro[ ,]\?/p }' )"
KV="$(uname -r)"
ARCH="$(uname -m | sed -e s/i.86/i386/ -e s/sun4u/sparc64/ \
                                  -e s/arm.*/arm/ -e s/sa110/arm/ \
                                  -e s/s390x/s390/ -e s/parisc64/parisc/ )"

# Get /boot mounted and usable
if [ -n "${fstabstate}" ] && [ -n "${procstate}" ]; then
	if [ -n "${proc_ro}" ]; then
		mount -o remount,rw /boot &>/dev/null
                if [ "$?" -ne 0 ]; then
			echo "Your /boot partition is mounted read-only and an attempt to remount failed."
			echo "Please fix this manually."
			exit 1
		fi
        fi
elif [ -n "${fstabstate}" ] && [ -z "${procstate}" ]; then
	mount /boot -o rw &>/dev/null
	if [ "$?" -eq 0 ]; then
		unmount="1"
	else
		echo "You have a separate /boot partition, but it can't be automounted as read/write."
		echo "Please do this manually."
		exit 2
        fi
fi

# Check if a newer kernel is available, if so, move it in place
if [ -e /boot/bzImage ] && [ -e "/usr/src/linux/arch/${ARCH}/boot/bzImage" ]; then
	diff /boot/bzImage "/usr/src/linux/arch/${ARCH}/boot/bzImage" &>/dev/null
	if [ "$?" -ne 0 ]; then
		mv /boot/bzImage /boot/bzImage.old
		cp "/usr/src/linux/arch/${ARCH}/boot/bzImage" /boot/bzImage
		echo "New kernel image moved in place as /boot/bzImage, backup copy made."
	fi
elif [ ! -e /boot/bzImage ] && [ -e "/usr/src/linux/arch/${ARCH}/boot/bzImage" ]; then
	cp "/usr/src/linux/arch/${ARCH}/boot/bzImage" /boot/bzImage
	echo "Kernel image moved into place as /boot/bzImage."
fi

# See if a genkernel initrd exists for the current kernel sources, if newer, copy it to /boot/initrd
if [ -e "/boot/initrd-${KV}" ]; then
	diff "/boot/initrd-${KV}" /boot/initrd &>/dev/null
	if [ "$?" -ne 0 ]; then
		cp "/boot/initrd-${KV}" /boot/initrd
		echo "New genkernel initrd detected, copied to /boot/initrd."
	fi
elif [ -e /sbin/fbresolution ] && [ ! -e /boot/initrd ]; then
	RES=`/sbin/fbresolution`
	if [ -e "/usr/share/bootsplash/initrd-${RES}" ]; then
		cp "/usr/share/bootsplash/initrd-${RES}" /boot/initrd
		echo "Bootsplash initrd for ${RES} resolution copied to /boot/initrd."
	fi
fi

# Check if lilo configuration is valid, write a minimal config out if not
if [ -e "${rootdev}" ] && [ -e "${bootdev}" ] && [ -e /boot/bzImage ] && [ ! -e /etc/lilo.conf ]; then
	echo "boot=${bootdev}" > /etc/lilo.conf
	echo "timeout=30" >> /etc/lilo.conf
	echo "default=linux" >> /etc/lilo.conf

	# We only need to have lilo prompt if there are two choices in our minimalist config
	if [ -e /boot/bzImage.old ]; then
		echo "prompt" >> /etc/lilo.conf
	fi

	echo >> /etc/lilo.conf
	echo "image=/boot/bzImage" >> /etc/lilo.conf
	echo "	label=linux" >> /etc/lilo.conf
	echo "	read-only" >> /etc/lilo.conf
	echo "	root=${rootdev}" >> /etc/lilo.conf

	# See if there is an initrd present, if so, add it to the config
	if [ -e /boot/initrd ]; then
		echo "	initrd=/boot/initrd" >> /etc/lilo.conf
	fi

	echo >> /etc/lilo.conf
	if [ -e /boot/bzImage.old ]; then
		echo "image=/boot/bzImage.old" >> /etc/lilo.conf
        	echo "  label=linuxOLD" >> /etc/lilo.conf
	        echo "  read-only" >> /etc/lilo.conf
        	echo "  root=${rootdev}" >> /etc/lilo.conf
	        echo >> /etc/lilo.conf
	fi

	echo "A minimal /etc/lilo.conf has been generated for you as you didn't have one yet."

elif [ ! -e /etc/lilo.conf ]; then
	echo "You don't have /etc/lilo.conf and it can't be autogenerated for you."
	echo "Please make an /etc/lilo.conf file and rerun dolilo."
	exit 5
fi

# Run lilo
/sbin/lilo $@

# Restore original situation for /boot
if [ -n "${proc_ro}" ]; then
	mount -o remount,ro /boot &>/dev/null
	if [ "$?" -ne 0 ]; then
		echo "Your /boot partition was remounted read/write for lilo, but can't be remounted read-only."
		echo "Please do this manually."
		exit 3
	fi
fi
if [ -n "${unmount}" ]; then
	umount /boot
	if [ "$?" -ne 0 ]; then
                echo "Your /boot partition was automounted for lilo, but can't be unmounted."
                echo "Please do this manually."
                exit 4
        fi
fi