Put the final output of dev_debug_vboot under /var/log/

utility/dev_debug_vboot

 #!/bin/sh -u
 # Copyright (c) 2011 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.
 #
 # Usage:  dev_debug_vboot [ --cleanup | DIRECTORY ]
 #
 # This extracts some useful debugging information about verified boot. A short
 # summary is printed on stdout, more detailed information and working files are
 # left in a log directory.
 #
 
 PATH=/bin:/sbin:/usr/bin:/usr/sbin
 
 TMPDIR=$(mktemp -d /tmp/debug_vboot_XXXXXXXXX)
 LOGFILE=noisy.log
-# The public file must live directly in /tmp, not in a subdirectory.
-# See http://crosbug.com/8947
-PUBLOGFILE=/tmp/debug_vboot_noisy.log
+PUBLOGFILE=/var/log/debug_vboot_noisy.log
 
 # TODO(wfrichar): Need to support ARM. The hard disk path is likely different.
 # We can use 'crossystem arch' to distinguish between x86 and ARM.
 HD=/dev/sda
 
 cleanup() {
   if [ -z "${USE_EXISTING:-}" ]; then
-    # See http://crosbug.com/8947
-    cp --no-target-directory --remove-destination "${LOGFILE}" "${PUBLOGFILE}"
+    cp -f "${LOGFILE}" "${PUBLOGFILE}"
     info "exporting log file as ${PUBLOGFILE}"
   fi
   if [ -n "${CLEANUP:-}" ]; then
     cd /
     rm -rf "${TMPDIR}"
   fi
 }
 
 die() {
   echo "$*" 1>&2
@@ skipping 63 matching lines @@
   if [ "$1" = "--cleanup" ]; then
     CLEANUP=1
   else
     TMPDIR="$1"
     [ -d ${TMPDIR} ] || die "${TMPDIR} doesn't exist"
     USE_EXISTING=yes
   fi
 fi
 
 [ -d ${TMPDIR} ] || mkdir -p ${TMPDIR} || exit 1
 cd ${TMPDIR}

[gauravsh, 2011/04/13 02:41:28]

one suggestion: I feel it be much cleaner if you modified LOGFILE to be the full
path instead of 'cd'-ing into TMPDIR, and using a relative path everywhere. This
is just for extra sanity.

 echo "$0 $*" > "$LOGFILE"
 log date
 echo "Saving verbose log as $(pwd)/$LOGFILE"
 
 BIOS=bios.rom
 
 # Find BIOS and kernel images
 if [ -n "${USE_EXISTING:-}" ]; then
   info "Using images in $(pwd)/"
 else
@@ skipping 61 matching lines @@
   loghead od -Ax -tx1 $keyblock
 done
 
 # Test each kernel with each key
 for key in kernel_subkey_a.vbpubk kernel_subkey_b.vbpubk recoverykey.vbpubk; do
   for kern in *kern*.blob; do
     infon "Verify $kern with $key... "
     log vbutil_kernel --verify $kern --signpubkey $key ; result
   done
 done