Make re-signing script abort on error.

scripts/image_signing/cros_resign_image_standalone.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.
 
 # Standalone version of cros_resign_image.sh script from
 # from chromeos/src/scripts/bin/ for use on signing servers.
 
 # Both the cgpt tool and vbutil_kernel should be in the system path. 
 
+# Abort on error
+set -e
+
 # Check arguments
 if [ $# -ne 4 ] ; then
   echo "usage: $0 src_bin dst_bin kernel_datakey kernel_keyblock" 
   exit 1
 fi
 
 # Make sure the tools we need are available.
 type -P cgpt &>/dev/null || \
   { echo "cgpt tool not found."; exit 1; }
 type -P vbutil_kernel &>/dev/null || \
@@ skipping 25 matching lines @@
   --signprivate "${kernel_datakey}" \
   --oldblob "${temp_kimage}"
 
 # Create a copy of the input image and put in the new vblock
 cp "${src_bin}" "${dst_bin}"
 dd if="${temp_out_vb}" of="${dst_bin}" seek=$koffset bs=$sector_size \
   count=$num_sectors_vb conv=notrunc
 
 echo "New signed image was output to ${dst_bin}"
 
-# Clean up temporary files
-rm -f ${temp_kimage}
-rm -f ${temp_out_vb}