From 887511601787db60b5692802fc2ccdfd47c0d698 Mon Sep 17 00:00:00 2001
From: Dave Reisner <dreisner@archlinux.org>
Date: Thu, 27 Sep 2012 09:58:30 -0400
Subject: lsinitcpio: add -c, --config option to dump config

Now that mkinitcpio stores the build time config file in the image, we
should have a way of easily getting it back out.

Signed-off-by: Dave Reisner <dreisner@archlinux.org>
---
 bash-completion  |  2 +-
 lsinitcpio       | 12 +++++++++---
 lsinitcpio.1.txt |  3 +++
 3 files changed, 13 insertions(+), 4 deletions(-)

diff --git a/bash-completion b/bash-completion
index e56cd6c..4e548af 100644
--- a/bash-completion
+++ b/bash-completion
@@ -3,7 +3,7 @@
 
 _lsinitcpio() {
     local cur opts
-    opts=(-a --analyze -h --help -n --nocolor -v --verbose -x --extract)
+    opts=(-a --analyze -c --config -h --help -n --nocolor -v --verbose -x --extract)
 
     _get_comp_words_by_ref cur
 
diff --git a/lsinitcpio b/lsinitcpio
index 46ea9f0..1d4a343 100755
--- a/lsinitcpio
+++ b/lsinitcpio
@@ -17,7 +17,8 @@ lsinitcpio %VERSION%
 usage: ${0##*/} [options] <initramfs>
 
   Options:
-   -a, --analyze        analyze contents
+   -a, --analyze        analyze contents of image
+   -c, --config         show configuration file image was built with
    -h, --help           display this help
    -n, --nocolor        disable colorized output
    -v, --verbose        more verbose output
@@ -162,8 +163,8 @@ analyze_image() {
     fi
 }
 
-OPT_SHORT='ahnvx'
-OPT_LONG=('analyze' 'help' 'nocolor' 'verbose' 'extract')
+OPT_SHORT='achnvx'
+OPT_LONG=('analyze' 'help' 'nocolor' 'showconfig' 'verbose' 'extract')
 
 if ! parseopts "$OPT_SHORT" "${OPT_LONG[@]}" -- "$@"; then
     exit 1
@@ -175,6 +176,8 @@ while :; do
     case $1 in
         -a|--analyze)
             analyze=1 ;;
+        -c|--config)
+            showconfig=1 ;;
         -h|--help)
             usage
             exit 0 ;;
@@ -227,6 +230,9 @@ esac
 
 if (( analyze )); then
     analyze_image "$image"
+elif (( showconfig )); then
+    decomp "$1" | bsdtar xOf - buildconfig 2>/dev/null ||
+        die 'Failed to extract config from image (mkinitcpio too old?)'
 else
     decomp "$image" | bsdcpio -i --quiet $verbose $list
 fi
diff --git a/lsinitcpio.1.txt b/lsinitcpio.1.txt
index 7a152ab..63b5566 100644
--- a/lsinitcpio.1.txt
+++ b/lsinitcpio.1.txt
@@ -23,6 +23,9 @@ Options
 	Analyze the contents of the specified image and print output in human
 	readable form.
 
+*-c, \--config*::
+	Show the configuration file the given image was built with.
+
 *-h, \--help*::
 	Output a short overview of available command-line switches.
 
-- 
cgit v1.2.3-24-g4f1b