Author: eadler
Date: Fri Mar 7 01:23:49 2014
New Revision: 262882
URL: http://svnweb.freebsd.org/changeset/base/262882
Log:
wlanstats: add help
- add a help (-h) flag
- move usage into itsown function
Modified:
head/tools/tools/net80211/wlanstats/main.c
Modified: head/tools/tools/net80211/wlanstats/main.c
==============================================================================
--- head/tools/tools/net80211/wlanstats/main.c Fri Mar 7 01:13:48 2014
(r262881)
+++ head/tools/tools/net80211/wlanstats/main.c Fri Mar 7 01:23:49 2014
(r262882)
@@ -153,6 +153,11 @@ print_sta_stats(FILE *fd, const u_int8_t
}
#endif
+void
+usage(void) {
+ printf("wlanstats: [-ah] [-i ifname] [-l] [-o fmt] [interval]\n");
+}
+
int
main(int argc, char *argv[])
{
@@ -167,11 +172,14 @@ main(int argc, char *argv[])
if (ifname == NULL)
ifname = "wlan0";
wf = wlanstats_new(ifname, getfmt("default"));
- while ((c = getopt(argc, argv, "ai:lm:o:")) != -1) {
+ while ((c = getopt(argc, argv, "ahi:lm:o:")) != -1) {
switch (c) {
case 'a':
allnodes++;
break;
+ case 'h':
+ usage();
+ exit(0);
case 'i':
wf->setifname(wf, optarg);
break;
@@ -188,7 +196,8 @@ main(int argc, char *argv[])
wf->setfmt(wf, getfmt(optarg));
break;
default:
- errx(-1, "usage: %s [-a] [-i ifname] [-l] [-o fmt]
[interval]\n", argv[0]);
+ usage();
+ exit(1);
/*NOTREACHED*/
}
}
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