usage(): return success if -h is called && print more appropriate usage, opts can...

diff --git a/slstatus.c b/slstatus.c
index 6a338f9..1f08514 100644 (file)
--- a/slstatus.c
+++ b/slstatus.c
@@ -70,7 +70,7 @@ static char *wifi_perc(const char *iface);
 static char *wifi_essid(const char *iface);
 static char *kernel_release(void);
 static void sighandler(const int signo);
 static char *wifi_essid(const char *iface);
 static char *kernel_release(void);
 static void sighandler(const int signo);

-static void usage(void);
+static void usage(int);

 
 char *argv0;
 char concat[];
 
 char *argv0;
 char concat[];


@@ -756,10 +756,10 @@ sighandler(const int signo)
 }
 
 static void
 }
 
 static void

-usage(void)
+usage(int eval)

 {
 {

-       fprintf(stderr, "usage: %s [-dhov]\n", argv0);
-       exit(1);
+       fprintf(stderr, "usage: %s [-d] [-o] [-v] [-h]\n", argv0);
+       exit(eval);

 }
 
 int
 }
 
 int


@@ -781,12 +781,14 @@ main(int argc, char *argv[])
                case 'v':
                        printf("slstatus %s (C) 2016 slstatus engineers\n", VERSION);
                        return 0;
                case 'v':
                        printf("slstatus %s (C) 2016 slstatus engineers\n", VERSION);
                        return 0;

+               case 'h':
+                       usage(0);

                default:
                default:

-                       usage();
+                       usage(1);

        } ARGEND
 
        if (dflag && oflag) {
        } ARGEND
 
        if (dflag && oflag) {

-               usage();
+               usage(1);

        }
        if (dflag && daemon(1, 1) < 0) {
                err(1, "daemon");
        }
        if (dflag && daemon(1, 1) < 0) {
                err(1, "daemon");