nologin: Prevent error from su -c

[thirdparty/util-linux.git] / login-utils / nologin.c

diff --git a/login-utils/nologin.c b/login-utils/nologin.c
index 14a091715e14fee51835c20531188d0ceb6a0e43..c0010fc3d696b05f395caaf975f4b2a6b8d30b9a 100644 (file)
--- a/login-utils/nologin.c
+++ b/login-utils/nologin.c
@@ -30,7 +30,8 @@ static void __attribute__((__noreturn__)) usage(void)
        fputs(_("Politely refuse a login.\n"), out);
 
        fputs(USAGE_OPTIONS, out);
-       printf(USAGE_HELP_OPTIONS(16));
+       fputs(_(" -c, --command <command>  does nothing (for compatibility with su -c)\n"), out);
+       printf(USAGE_HELP_OPTIONS(26));
 
        printf(USAGE_MAN_TAIL("nologin(8)"));
        exit(EXIT_FAILURE);
@@ -41,6 +42,7 @@ int main(int argc, char *argv[])
        int c, fd = -1;
        struct stat st;
        static const struct option longopts[] = {
+               { "command", required_argument, NULL, 'c' },
                { "help",    0, NULL, 'h' },
                { "version", 0, NULL, 'V' },
                { NULL, 0, NULL, 0 }
@@ -50,8 +52,11 @@ int main(int argc, char *argv[])
        bindtextdomain(PACKAGE, LOCALEDIR);
        textdomain(PACKAGE);
 
-       while ((c = getopt_long(argc, argv, "hV", longopts, NULL)) != -1) {
+       while ((c = getopt_long(argc, argv, "c:hV", longopts, NULL)) != -1) {
                switch (c) {
+               case 'c':
+                       /* Ignore the command, just don't print unknown option error. */
+                       break;
                case 'h':
                        usage();
                case 'V':