initrdscripts: init can now launch the installation script

Depending on the boot label ("boot" or "install"), init will either 
chroot into the rootfs image (live boot path), or launch the 
installation script (installation path).


git-svn-id: https://svn.o-hand.com/repos/poky/trunk@5457 311d38ba-8fff-0310-9ca6-ca027cbcb966

meta/packages/initrdscripts/files/init-live.sh

@@ -7,7 +7,9 @@ UMOUNT="/bin/umount"
 
 early_setup() {
     mkdir /proc
+    mkdir /sys
     mount -t proc proc /proc
+    mount -t sysfs sysfs /sys
     udevd --daemon
 }
 
@@ -22,6 +24,12 @@ read_args() {
                 ROOT_FSTYPE=$optarg ;;
             rootdelay=*)
                 rootdelay=$optarg ;;
+	    LABEL=*)
+		label=$optarg ;;
+	    video=*)
+		video_mode=$optarg ;;
+	    vga=*)
+		vga_mode=$optarg ;;	    
         esac
     done
 }
@@ -38,14 +46,13 @@ fatal() {
     exec sh
 }
 
-echo "Starting initramfs boot..."
 early_setup
 
 [ -z "$CONSOLE" ] && CONSOLE="/dev/console"
 
 read_args
 
-echo "Waiting for Live image to show up..."
+echo "Waiting for removable media..."
 while true
 do
   for i in `ls /media 2>/dev/null`; do
@@ -59,12 +66,26 @@ do
   sleep 1
 done
 
-mkdir $ROOT_MOUNT
-mknod /dev/loop0 b 7 0
+case $label in
+    boot)
+	mkdir $ROOT_MOUNT
+	mknod /dev/loop0 b 7 0
+
+	if ! $MOUNT -o rw,loop,noatime,nodiratime /media/$i/$ROOT_IMAGE $ROOT_MOUNT ; then
+	    fatal "Couldnt mount rootfs image"
+	else
+	    boot_live_root
+	fi
+	;;
+    install)
+	if [ -f /media/$i/$ROOT_IMAGE ] ; then
+	    ./install.sh $i $ROOT_IMAGE $video_mode $vga
+	else
+	    fatal "Couldnt find install script"
+	fi
+
+	# If we're getting here, we failed...
+	fatal "Installation image failed"
+	;;
+esac
 
-if ! $MOUNT -o rw,loop,noatime,nodiratime /media/$i/$ROOT_IMAGE $ROOT_MOUNT
-then
-    fatal "Couldnt mount rootfs image"
-else
-    boot_live_root
-fi