uname: check that no operands are specified

Signed-off-by: Mattias Andrée <maandree@kth.se>
2018-07-11 20:53:17 +02:00 · 2018-07-11 20:53:17 +02:00 · d8656b0189
commit d8656b0189
parent a1627b9419
1 changed files with 3 additions and 0 deletions
--- a/uname.c
+++ b/uname.c
@ -40,6 +40,9 @@ main(int argc, char *argv[])
 		usage();
 	} ARGEND

+	if (argc)
+		usage();
+
 	if (uname(&u) < 0)
 		eprintf("uname:");