The offchannel command assumes that frequency and duration
are given as arguments, otherwise iw segfaults - fix that
by printing help text instead.
Signed-off-by: Ola Olsson <ola.olsson@xxxxxxxxxxxxxx>
---
offch.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/offch.c b/offch.c
index 49b101a..04bf4c6 100644
--- a/offch.c
+++ b/offch.c
@@ -15,6 +15,10 @@ static int offchannel(struct nl80211_state *state,
{
char *end;
+ if (argc < 2) {
+ return 1;
+ }
+
/* freq */
NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ,
strtoul(argv[0], &end, 10));
--
1.7.9.5
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