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authorLennart Poettering <lennart@poettering.net>2013-11-06 18:28:39 +0100
committerLennart Poettering <lennart@poettering.net>2013-11-06 18:28:39 +0100
commiteb9da376d76b48585b3b63b4f91903b54f7abd36 (patch)
treef58957844d6248d2df547727a4bfbd1b81c2ef97 /src/binfmt
parent4087cb9e8fb90957d90d577e62e8ba056c2258cf (diff)
clients: unify how we invoke getopt_long()
Among other things this makes sure we always expose a --version command and show it in the help texts.
Diffstat (limited to 'src/binfmt')
-rw-r--r--src/binfmt/binfmt.c20
1 files changed, 15 insertions, 5 deletions
diff --git a/src/binfmt/binfmt.c b/src/binfmt/binfmt.c
index 5a42b3dbef..3487602e46 100644
--- a/src/binfmt/binfmt.c
+++ b/src/binfmt/binfmt.c
@@ -34,6 +34,7 @@
#include "util.h"
#include "conf-files.h"
#include "fileio.h"
+#include "build.h"
static const char conf_file_dirs[] =
"/etc/binfmt.d\0"
@@ -125,7 +126,8 @@ static int help(void) {
printf("%s [OPTIONS...] [CONFIGURATION FILE...]\n\n"
"Registers binary formats.\n\n"
- " -h --help Show this help\n",
+ " -h --help Show this help\n"
+ " --version Show package version\n",
program_invocation_short_name);
return 0;
@@ -133,9 +135,14 @@ static int help(void) {
static int parse_argv(int argc, char *argv[]) {
+ enum {
+ ARG_VERSION = 0x100,
+ };
+
static const struct option options[] = {
{ "help", no_argument, NULL, 'h' },
- { NULL, 0, NULL, 0 }
+ { "version", no_argument, NULL, ARG_VERSION },
+ {}
};
int c;
@@ -148,15 +155,18 @@ static int parse_argv(int argc, char *argv[]) {
switch (c) {
case 'h':
- help();
+ return help();
+
+ case ARG_VERSION:
+ puts(PACKAGE_STRING);
+ puts(SYSTEMD_FEATURES);
return 0;
case '?':
return -EINVAL;
default:
- log_error("Unknown option code %c", c);
- return -EINVAL;
+ assert_not_reached("Unhandled option");
}
}