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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/sysctl
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/sysctl')
-rw-r--r--src/sysctl/sysctl.c15
1 files changed, 11 insertions, 4 deletions
diff --git a/src/sysctl/sysctl.c b/src/sysctl/sysctl.c
index b5670dbb86..67c787225c 100644
--- a/src/sysctl/sysctl.c
+++ b/src/sysctl/sysctl.c
@@ -35,6 +35,7 @@
#include "path-util.h"
#include "conf-files.h"
#include "fileio.h"
+#include "build.h"
static char **arg_prefixes = NULL;
@@ -205,6 +206,7 @@ static int help(void) {
printf("%s [OPTIONS...] [CONFIGURATION FILE...]\n\n"
"Applies kernel sysctl settings.\n\n"
" -h --help Show this help\n"
+ " --version Show package version\n"
" --prefix=PATH Only apply rules that apply to paths with the specified prefix\n",
program_invocation_short_name);
@@ -214,13 +216,15 @@ static int help(void) {
static int parse_argv(int argc, char *argv[]) {
enum {
+ ARG_VERSION = 0x100,
ARG_PREFIX
};
static const struct option options[] = {
{ "help", no_argument, NULL, 'h' },
+ { "version", no_argument, NULL, ARG_VERSION },
{ "prefix", required_argument, NULL, ARG_PREFIX },
- { NULL, 0, NULL, 0 }
+ {}
};
int c;
@@ -233,7 +237,11 @@ 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 ARG_PREFIX: {
@@ -258,8 +266,7 @@ static int parse_argv(int argc, char *argv[]) {
return -EINVAL;
default:
- log_error("Unknown option code %c", c);
- return -EINVAL;
+ assert_not_reached("Unhandled option");
}
}