adduser: check whether run with no USERNAME. Closes 6728
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
diff --git a/loginutils/adduser.c b/loginutils/adduser.c
index dc02444..ef390ad 100644
--- a/loginutils/adduser.c
+++ b/loginutils/adduser.c
@@ -162,9 +162,9 @@
pw.pw_shell = (char *)get_shell_name();
pw.pw_dir = NULL;
- /* at most two non-option args */
+ /* at least one and at most two non-option args */
/* disable interactive passwd for system accounts */
- opt_complementary = "?2:SD:u+";
+ opt_complementary = "-1:?2:SD:u+";
if (sizeof(pw.pw_uid) == sizeof(int)) {
opts = getopt32(argv, "h:g:s:G:DSHu:", &pw.pw_dir, &pw.pw_gecos, &pw.pw_shell, &usegroup, &pw.pw_uid);
} else {
