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authorSamuel Ortiz <sameo@openedhand.com>2008-09-10 21:21:23 +0000
committerSamuel Ortiz <sameo@openedhand.com>2008-09-10 21:21:23 +0000
commit9bdc5a0129276ccb9c3458ddc2351c9db2f11a62 (patch)
treecf6032adb16262207a318898d88dd6a929dbb4ab /meta/packages/initrdscripts/files
parent71a2e0d41d783d79873052f7999a7b6f7b039d2d (diff)
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initrdscripts: Simple init files for initrd/initramfs images
git-svn-id: https://svn.o-hand.com/repos/poky/trunk@5173 311d38ba-8fff-0310-9ca6-ca027cbcb966
Diffstat (limited to 'meta/packages/initrdscripts/files')
-rw-r--r--meta/packages/initrdscripts/files/init-live.sh70
1 files changed, 70 insertions, 0 deletions
diff --git a/meta/packages/initrdscripts/files/init-live.sh b/meta/packages/initrdscripts/files/init-live.sh
new file mode 100644
index 000000000..e081d44dd
--- /dev/null
+++ b/meta/packages/initrdscripts/files/init-live.sh
@@ -0,0 +1,70 @@
+#!/bin/sh
+
+ROOT_MOUNT="/rootfs/"
+ROOT_IMAGE=rootfs.img
+MOUNT="/bin/mount"
+UMOUNT="/bin/umount"
+
+early_setup() {
+ mkdir /proc
+ mount -t proc proc /proc
+ udevd --daemon
+}
+
+read_args() {
+ [ -z "$CMDLINE" ] && CMDLINE=`cat /proc/cmdline`
+ for arg in $CMDLINE; do
+ optarg=`expr "x$arg" : 'x[^=]*=\(.*\)'`
+ case $arg in
+ root=*)
+ ROOT_DEVICE=$optarg ;;
+ rootfstype=*)
+ ROOT_FSTYPE=$optarg ;;
+ rootdelay=*)
+ rootdelay=$optarg ;;
+ esac
+ done
+}
+
+boot_live_root() {
+ killall udevd
+ cd $ROOT_MOUNT
+ exec switch_root -c /dev/console $ROOT_MOUNT /sbin/init
+}
+
+fatal() {
+ echo $1 >$CONSOLE
+ echo >$CONSOLE
+ exec sh
+}
+
+echo "Starting initramfs boot..."
+early_setup
+
+[ -z "$CONSOLE" ] && CONSOLE="/dev/console"
+
+read_args
+
+echo "Waiting for Live image to show up..."
+while true
+do
+ for i in `ls /media 2>/dev/null`; do
+ if [ -f /media/$i/$ROOT_IMAGE ] ; then
+ found="yes"
+ fi
+ done
+ if [ "$found" = "yes" ]; then
+ break;
+ fi
+ sleep 1
+done
+
+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