Generate fake root certs for autotest via qemu

mod_image_for_test.sh

 #!/bin/bash
 
 # Copyright (c) 2009 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 modify a keyfob-based chromeos system image for testability.
 
 # Load common constants.  This should be the first executable line.
 # The path to common.sh should be relative to your script's location.
@@ skipping 50 matching lines @@
 
 # Turn path into an absolute path.
 FLAGS_image=`eval readlink -f ${FLAGS_image}`
 
 # Abort early if we can't find the image
 if [ ! -f $FLAGS_image ] ; then
   echo "No image found at $FLAGS_image"
   exit 1
 fi
 
+# What cross-build are we targeting?
+. "${FLAGS_build_root}/${FLAGS_board}/etc/make.conf.board_setup"
+# Figure out ARCH from the given toolchain.
+# TODO: Move to common.sh as a function after scripts are switched over.
+TC_ARCH=$(echo "${CHOST}" | awk -F'-' '{ print $1 }')
+case "${TC_ARCH}" in
+  arm*)
+    ARCH="arm"
+    ;;
+  *86)
+    ARCH="x86"
+    ;;
+  *)
+    error "Unable to determine ARCH from toolchain: ${CHOST}"
+    exit 1
+esac
+
 # Make sure anything mounted in the rootfs/stateful is cleaned up ok on exit.
 cleanup_mounts() {
   # Occasionally there are some daemons left hanging around that have our
   # root/stateful image file system open. We do a best effort attempt to kill
   # them.
   PIDS=`sudo lsof -t "$1" | sort | uniq`
   for pid in ${PIDS}
   do
     local cmdline=`cat /proc/$pid/cmdline`
     echo "Killing process that has open file on the mounted directory: $cmdline"
@@ skipping 97 matching lines @@
       "s/CHROMEOS_AUSERVER=.*$/CHROMEOS_AUSERVER=\
 http:\/\/${FACTORY_SERVER}:8080\/update/" \
       ${ROOT_FS_DIR}/etc/lsb-release
   fi
 else
   emerge_chromeos_test
 
   MOD_TEST_ROOT="${GCLIENT_ROOT}/src/scripts/mod_for_test_scripts"
   # Run test setup script to modify the image
   sudo GCLIENT_ROOT="${GCLIENT_ROOT}" ROOT_FS_DIR="${ROOT_FS_DIR}" \
-      STATEFUL_DIR="${STATEFUL_DIR}" "${MOD_TEST_ROOT}/test_setup.sh"
+      STATEFUL_DIR="${STATEFUL_DIR}" ARCH="${ARCH}" "${MOD_TEST_ROOT}/test_setup.sh"
 
   if [ ${FLAGS_factory} -eq ${FLAGS_TRUE} ]; then
     install_autotest
 
     MOD_FACTORY_ROOT="${GCLIENT_ROOT}/src/scripts/mod_for_factory_scripts"
     # Run factory setup script to modify the image
     sudo GCLIENT_ROOT="${GCLIENT_ROOT}" ROOT_FS_DIR="${ROOT_FS_DIR}" \
         QUALDB="${FLAGS_qualdb}" \
         "${MOD_FACTORY_ROOT}/factory_setup.sh"
   fi
 fi
 
 # Let's have a look at the image just in case..
 if [ "${VERIFY}" = "true" ]; then
   pushd "${ROOT_FS_DIR}"
   bash
   popd
 fi
 
 cleanup
 
 print_time_elapsed
 
 trap - EXIT