From acbeb42770e1e99955ebc4464a0439cf741b3aeb Mon Sep 17 00:00:00 2001
From: =?utf8?q?Zbigniew=20J=C4=99drzejewski-Szmek?= <zbyszek@in.waw.pl>
Date: Fri, 11 Jan 2013 16:03:49 -0500
Subject: [PATCH] nspawn: add --version

---
 man/systemd-nspawn.xml |  7 +++++++
 src/nspawn/nspawn.c    | 11 ++++++++++-
 2 files changed, 17 insertions(+), 1 deletion(-)

diff --git a/man/systemd-nspawn.xml b/man/systemd-nspawn.xml
index fef5c2c83..db2d417e4 100644
--- a/man/systemd-nspawn.xml
+++ b/man/systemd-nspawn.xml
@@ -138,6 +138,13 @@
                                 text and exits.</para></listitem>
                         </varlistentry>
 
+                        <varlistentry>
+                                <term><option>--version</option></term>
+
+                                <listitem><para>Prints a version string
+                                and exits.</para></listitem>
+                        </varlistentry>
+
                         <varlistentry>
                                 <term><option>--directory=</option></term>
                                 <term><option>-D</option></term>
diff --git a/src/nspawn/nspawn.c b/src/nspawn/nspawn.c
index 1f3bda5b4..98b583d74 100644
--- a/src/nspawn/nspawn.c
+++ b/src/nspawn/nspawn.c
@@ -56,6 +56,7 @@
 #include "sd-id128.h"
 #include "dev-setup.h"
 #include "fdset.h"
+#include "build.h"
 
 typedef enum LinkJournal {
         LINK_NO,
@@ -102,6 +103,7 @@ static int help(void) {
         printf("%s [OPTIONS...] [PATH] [ARGUMENTS...]\n\n"
                "Spawn a minimal namespace container for debugging, testing and building.\n\n"
                "  -h --help               Show this help\n"
+               "  --version               Print version string\n"
                "  -D --directory=NAME     Root directory for the container\n"
                "  -b --boot               Boot up full system (i.e. invoke init)\n"
                "  -u --user=USER          Run the command under specified user or uid\n"
@@ -120,7 +122,8 @@ static int help(void) {
 static int parse_argv(int argc, char *argv[]) {
 
         enum {
-                ARG_PRIVATE_NETWORK = 0x100,
+                ARG_VERSION = 0x100,
+                ARG_PRIVATE_NETWORK,
                 ARG_UUID,
                 ARG_READ_ONLY,
                 ARG_CAPABILITY,
@@ -129,6 +132,7 @@ static int parse_argv(int argc, char *argv[]) {
 
         static const struct option options[] = {
                 { "help",            no_argument,       NULL, 'h'                 },
+                { "version",         no_argument,       NULL, ARG_VERSION         },
                 { "directory",       required_argument, NULL, 'D'                 },
                 { "user",            required_argument, NULL, 'u'                 },
                 { "controllers",     required_argument, NULL, 'C'                 },
@@ -154,6 +158,11 @@ static int parse_argv(int argc, char *argv[]) {
                         help();
                         return 0;
 
+                case ARG_VERSION:
+                        puts(PACKAGE_STRING);
+                        puts(SYSTEMD_FEATURES);
+                        return 0;
+
                 case 'D':
                         free(arg_directory);
                         arg_directory = canonicalize_file_name(optarg);
-- 
2.30.2