Store build-time settings

This will write two files in /etc/ that contain the environment and
command line arguments used in the creation of an image. This should
assist with later efforts to repeat the creation of an image.

Change-Id: Icdbe6693380bed6c406feee10d2cb1a88a992932

bin/disk-image-create

@@ -21,6 +21,10 @@ set -e
 # of $LANG varying between build hosts
 export LANG=C
 
+# Store our initial environment and command line args for later
+export DIB_ARGS="$@"
+export DIB_ENV=$(export)
+
 SCRIPTNAME=$(basename $0)
 SCRIPT_HOME=$(dirname $0)
 export _LIB=$(dirname $0)/../lib

elements/base/extra-data.d/50-store-build-settings

@@ -0,0 +1,9 @@
+#!/bin/bash
+# Store the build-time environment and command line arguments
+
+set -e
+source $_LIB/die
+[ -n "$TMP_HOOKS_PATH." ] || die "Temp hook path not set"
+
+echo "$DIB_ENV" > $TMP_HOOKS_PATH/dib_environment
+echo "$DIB_ARGS" > $TMP_HOOKS_PATH/dib_arguments

elements/base/install.d/50-store-build-settings

@@ -0,0 +1,12 @@
+#!/bin/bash
+# Store build-time environment and command line arguments
+
+set -e
+
+if [ -e "/tmp/in_target.d/dib_environment" ]; then
+  cp /tmp/in_target.d/dib_environment /etc/
+fi
+
+if [ -e "/tmp/in_target.d/dib_arguments" ]; then
+  cp /tmp/in_target.d/dib_arguments /etc/
+fi