Broke out boot-device locator for usb and cd booting seperatly.

git-svn-id: http://phraktured.net/archiso@14 00a9fe69-e71b-0410-bb23-df0e5024db41

1 files changed, 51 insertions, 0 deletions

diff --git a/archiso_hook b/archiso_hook
new file mode 100644
index 0000000..c60df2b
--- /dev/null
+++ b/archiso_hook
@@ -0,0 +1,51 @@
+# vim: set ft=sh:
+run_hook ()
+{
+    if [ "x${ramdisk_size}" = "x" ]; then
+        ramdisk_size="75%"
+    fi
+    msg -n ":: Mounting tmpfs, size=${ramdisk_size}..."
+	mount -t tmpfs -o "size=${ramdisk_size}" tmpfs /tmpfs
+    mkdir /tmpfs/bootcd
+    msg "done."
+
+    if [ "x${BOOT_MOUNT}" -eq "x" ]; then
+        echo "ERROR: BOOT_MOUNT is not set. The boot-cd or boot-usb hook MUST"
+        echo "       be run before this one.  This image was improperly built"
+        exit 1
+    fi
+
+    squashimg="${BOOT_MOUNT}/archiso.sqfs"
+    if [ "${copytoram}" = "y" ]; then
+        /bin/cat ${squashimg} > /tmpfs/archiso.sqfs
+        squashimg="/tmpfs/archiso.sqfs"
+    fi
+
+    msg ":: Mounting squashfs image"
+    /bin/modprobe -q squashfs >/dev/null 2>&1
+    /bin/mkdir -p /tmpfs/squashfs_root
+    if ! /bin/losetup /dev/loop0 "${squashimg}" >/dev/null 2>&1; then
+        echo "ERROR: Cannot mount loop device /dev/loop0...aborting"
+        exit 1
+    fi
+
+    /bin/mount -r -t squashfs /dev/loop0 /tmpfs/squashfs_root
+
+    msg ":: Mounting root (union) filesystem"
+    /bin/modprobe -q unionfs >/dev/null 2>&1
+    /bin/mount -t unionfs -o dirs=/tmpfs=rw:/tmpfs/squashfs_root=ro none /real_root
+
+    if [ -d /proc/sys/dev/cdrom ]; then
+        echo 0 > /proc/sys/dev/cdrom/lock
+        echo 1 > /proc/sys/dev/cdrom/autoeject
+    fi
+
+    udevpid=$(/bin/minips -C udevd -o pid=)
+    [ "x${udevpid}" != "x" ] && /bin/kill -9 $udevpid 2>&1 >/dev/null
+    #Yep, we're bailing out here.  We don't need kinit.
+    msg ":: Passing control to Archlinux Initscripts...Please Wait"
+    /bin/umount /sys
+    /bin/umount /proc
+    /bin/umount /dev
+    exec /bin/run-init -c /dev/console /real_root /sbin/init ${CMDLINE}
+}