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path: root/packages/altboot/files/altboot-menu/Advanced/70-install-tgz
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#!/bin/sh
M_TITLE="Install RootFS from tar.gz"
M_FLAGS="noRemember"

run_module(){
	test -e /etc/altboot.func && . /etc/altboot.func || die "ERROR: /etc/altboot.func not found. Check your installation!"	
	
	# Mount /proc, etc
	init_rootfs
	
	# Mount
	mount_sd ingore_errors	
	mount_cf
	mount_home
	
	for source in /home /media/card /media/cf
	do
		#echo "source: [$source]"
		rootfs_files="`ls -1 $source | grep "rootfs.tar.gz"`"
		
		#echo "rootfs_file: [$rootfs_files]"
		if test "`echo "$rootfs_files" | wc -l | tr -d " "`" -gt 1
		then
			echo "Multiple rootfs files not supported, yet"
		else		
			if test -n "$rootfs_files"
			then
				rootfs_source="$source/$rootfs_files"
				echo "Using [$rootfs_source]"				
				break
			fi
		fi				
	done
	
	test -z "$rootfs_source" && die "No rootfs.tar.gz found" 
	
	echo -e "\nPlease choose the target of this installation:\n"

	echo -e "\t [1] SD / MMC"
	echo -e "\t [2] Compact Flash"
	
	echo ""
	while true
	do
		echo -n "Your target: "
		read junk
		
		case "$junk" in
		1)	if (mount | grep -q "/media/card ")
			then
				rootfs_target="/media/card"; break 
			else
				echo -e "\nInstallation target [/media/card] not mounted\n"
			fi ;;
		2)	if (mount | grep -q "/media/cf ")
			then
				rootfs_target="/media/cf"; break 
			else
				echo -e "\nInstallation target [/media/cf] not mounted\n"
			fi ;;
		esac
	done

	echo -e "\nPlease choose the type of this installation:\n"

	echo -e "\t [1] Imagefile (loopfile)"
	echo -e "\t [2] Direct Install"
	
	echo ""
	while true
	do
		echo -n "Install type: "
		read junk
		
		case "$junk" in
		1)	if test -x /sbin/mkfs.ext2
			then
				rootfs_type="image"
				 break 
			else
				echo -e "\nNOTE: mkfs.ext2 (from e2fsprogs-mke2fs) not found, loop-images not supported\n"
			fi ;;			
		2)	rootfs_type="direct" ; break ;;
		esac
	done
	
	case "$rootfs_type" in
	image) 	install_rootfs_image "$rootfs_target";;
	direct)	install_rootfs_direct "$rootfs_target";;
	esac
}

clear_directories(){
	test "$1" = "/" -o "$1" = "/ " && die "clear_directories(): You don't want to do that."
	
	! test -d "$1" && die "clear_directories(): [$1] not found."
	
	for d in bin dev media proc sys usr boot etc lib mnt sbin tmp var
	do
		if test -d "$1/$d"
		then
			echo "Removing [$1/$d]..."
			rm -rf "$1/$d"
		fi
	done

}


install_rootfs_direct(){
	
	mount | grep -q "$1 " || die "Installation target [$1] not mounted"
	
	echo -e "Do you want to remove existing directories from [$1]\n before installing the new rootfs?"
	echo ""
	
	while true
	do
		echo -n "Remove old directories? [Y|n] "
		read junk </dev/tty0 >/dev/tty0 2>&1		
				
		case "$junk" in
		Y|y|"")	clear_directories "$1"; break ;;
		esac
	done		

	echo "Please press <ENTER> to begin the installation"
	read junk </dev/tty0 >/dev/tty0 2>&1
		
	test -d "$1" || die "Directory [$1] not found"
	
	echo -n "Installing rootfs, please wait..."
	tar -xzf "$rootfs_source" -C "$1" >/dev/null 2>&1 && echo ok || die "tar -xzf \"$rootfs_source\" -C \"$1\" failed!"
	
	echo -n "Syncing drives..."
	sync
	echo "done"
	
#	umount "$1"
	
	echo "Press <ENTER> to bring up the altboot menu"
	read junk </dev/tty0 >/dev/tty0 2>&1
	exec /sbin/init.altboot -force
	
}

install_rootfs_image(){

	mount | grep -q "$1 " || die "Installation target [$1] not mounted"

	echo ""
	echo "Please enter a name for the image file."
	echo "Do not use the <space> character"
	echo ""
		
	
	while true
	do
		echo -n "Image name: "
		read junk
		
		if test -n "$junk"
		then					
			if test -e "$1/boot-images/${junk}-rootfs.bin"
			then			
				echo -e "\nFile [$1/boot-images/${junk}-rootfs.bin] already exists."
				
				while true 
				do
					echo -n "Overwrite? [y|N] "
					read junk2
					
					case "$junk2" in
					Y|y)	break;;
					n|N|"")	install_rootfs_image "$1"
						exit 0;;
					esac
				done
				rootfs_image_name="${junk}-rootfs.bin"
				break															
			else						
				 echo -n "Use [$junk] as name? [Y|n] "
				 read junk2

				 case "$junk2"  in
				 "Y"|"y"|"")	rootfs_image_name="${junk}-rootfs.bin"
						 break ;;
				 *)		echo "err ]$junk]";;
				 esac
			fi
		fi
	done
	
	echo ""
	echo "Please enter the image size in MegaBytes"
	echo "Must be at least 30Mb"
	echo ""
	
	while true
	do
		echo -n "Image size: "		
		read junk
				
		junk="`echo "$junk" | sed "s/[a-zA-Z]//g"`"
		
		if test -n "$junk"
		then
			if test "$junk" -gt 29
			then
				echo -n "Is [${junk}Mb] correct? [Y|n] "
				read junk2
	
				case "$junk2"  in
					Y|y|"")	rootfs_image_size="$junk"
						break ;;
				esac						
		
			else
				echo "Image size of [${junk}Mb] is too small!"
			fi
		fi
	done
	
	test -z "$rootfs_image_name" -o -z "$rootfs_image_size" && die "DEBUG: Empty VAR in install_rootfs_image()" 
	
	echo ""
	echo "Creating [$rootfs_image_name] (${rootfs_image_size}Mb) on [$1]"
	echo "Please wait..."
	mkdir -p "$1/boot-images"
		
	dd if=/dev/zero of="$1/boot-images/$rootfs_image_name" bs=1024k count=$rootfs_image_size >/dev/null
	
	echo -n "Creating an ext2 filesystem on $rootfs_image_name..."
	losetup /dev/loop0 "$1/boot-images/$rootfs_image_name" || die "losetup /dev/loop0 \"$1/boot-images/$rootfs_image_name\" failed!"
	mkfs.ext2 -m0 /dev/loop0 >/dev/null 2>&1 && echo done || die "mkfs.ext2 -m0 /dev/loop0 failed!"
	
	echo -n "Mounting loopfile..."
	mkdir -p /media/image
	mount /dev/loop0 /media/image && echo ok || die "mount /dev/loop0 /media/image failed!"
	
	echo -n "Installing rootfs, please wait..."
	tar -xzf "$rootfs_source" -C "/media/image" >/dev/null 2>&1 && echo ok || die "tar -xzf \"$rootfs_source\" -C \"$1\" failed!"
	
	echo -n "Syncing drives..."
	sync
	echo "done"
	
	umount "/media/image" && losetup -d /dev/loop0
	
	echo "Press <ENTER> to bring up the altboot menu"
	read junk </dev/tty0 >/dev/tty0 2>&1
	exec /sbin/init.altboot -force
	
}



#run_module

case "$1" in
title)	echo "$M_TITLE";;
flags)	echo "$M_FLAGS";;
run)	run_module "$2";;
esac