strip block: off root= when using the mount hooks

I'm not sure they are still used, but if so they need to
trim the prefix.

diff --git a/modules.d/95rootfs-block/mount-root.sh b/modules.d/95rootfs-block/mount-root.sh
index 77a6b37d5d6ebcff5b7b9360befb373cd56d71a5..a5741d16749600e4e79699794dfa954102a2def6 100755 (executable)
--- a/modules.d/95rootfs-block/mount-root.sh
+++ b/modules.d/95rootfs-block/mount-root.sh
@@ -1,4 +1,4 @@
 #!/bin/sh
-if [ ! -s /.resume -a "$root" ]; then
-    mount ${fstype:--t auto} -o "$rflags" "$root" "$NEWROOT" && ROOTFS_MOUNTED=yes
+if [ ! -s /.resume -a -n "$root" -a -z "${root%%block:*}" ]; then
+    mount ${fstype:--t auto} -o "$rflags" "${root#block:}" "$NEWROOT" && ROOTFS_MOUNTED=yes
 fi