This starts to fix the scripts so that they load from /usr/lib/crosutils

verify_rootfs_chksum.sh

 #!/bin/bash
 #
 # Copyright (c) 2010 The Chromium OS Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 # Script to verify integrity of root file system for a GPT-based image
 
-# Load functions and constants
-. "$(dirname "$0")/common.sh" || exit 1
-. "$(dirname "$0")/chromeos-common.sh" || exit 1
+# --- BEGIN COMMON.SH BOILERPLATE ---
+# Load common CrOS utilities.  Inside the chroot this file is installed in
+# /usr/lib/crosutils.  Outside the chroot we find it relative to the script's
+# location.
+find_common_sh() {
+  local common_paths=(/usr/lib/crosutils $(dirname "$(readlink -f "$0")"))
+  local path
+
+  SCRIPT_ROOT=
+  for path in "${common_paths[@]}"; do
+    if [ -r "${path}/common.sh" ]; then
+      SCRIPT_ROOT=${path}
+      break
+    fi
+  done
+}
+
+find_common_sh
+. "${SCRIPT_ROOT}/common.sh" || (echo "Unable to load common.sh" && exit 1)
+# --- END COMMON.SH BOILERPLATE ---
+
+# Load functions and constants for chromeos-install
+[ -f /usr/lib/installer/chromeos-common.sh ] && \
+  INSTALLER_ROOT=/usr/lib/installer || \
+  INSTALLER_ROOT=$(dirname "$(readlink -f "$0")")
+
+. "${INSTALLER_ROOT}/chromeos-common.sh" || \
+  die "Unable to load chromeos-common.sh"
 
 # Needed for partoffset and partsize calls
 locate_gpt
 
 # Script must be run inside the chroot.
-restart_in_chroot_if_needed $*
+restart_in_chroot_if_needed "$@"
 
 DEFINE_string image "" "Device or an image path. Default: (empty)."
 
 # Parse command line.
 FLAGS "$@" || exit 1
 eval set -- "${FLAGS_ARGV}"
 
 if [ -z $FLAGS_image ] ; then
   die "Use --from to specify a device or an image file."
 fi
@@ skipping 23 matching lines @@
   local rootfs_count=$(partsize "${FLAGS_image}" 3)
 
   # TODO(tgao): use loop device to save 1GB in temp space
   dd if="${FLAGS_image}" of=${KERNEL_IMG} bs=512 skip=${kernel_offset} \
       count=${kernel_count} &>/dev/null
   dd if="${FLAGS_image}" of=${ROOTFS_IMG} bs=512 skip=${rootfs_offset} \
       count=${rootfs_count} &>/dev/null
 }
 
 function cleanup() {
-  for i in ${KERNEL_IMG} ${ROOTFS_IMG}
-  do
+  for i in ${KERNEL_IMG} ${ROOTFS_IMG}; do
     if [ ! -b ${i} ]; then
       rm -f ${i}
     fi
   done
 }
 
 get_partitions
 
 # Logic below extracted from src/platform/installer/chromeos-setimage
 DUMP_KERNEL_CONFIG=/usr/bin/dump_kernel_config
@@ skipping 18 matching lines @@
 
 cleanup
 
 if [ "${expected_hash}" != "${generated_hash}" ]; then
   warn "expected hash = ${expected_hash}"
   warn "actual hash = ${generated_hash}"
   die "Root filesystem has been modified unexpectedly!"
 else
   info "Root filesystem checksum match!"
 fi