*
* Copyright (C) 2003 Manuel Novoa III <mjn3@codepoet.org>
*
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- *
+ * Licensed under GPLv2 or later, see file LICENSE in this source tree.
*/
-/* BB_AUDIT SUSv3 compliant */
-/* http://www.opengroup.org/onlinepubs/007904975/utilities/tty.html */
+/* BB_AUDIT SUSv4 compliant */
+/* http://www.opengroup.org/onlinepubs/9699919799/utilities/tty.html */
-#include <stdio.h>
-#include <stdlib.h>
-#include <unistd.h>
-#include "busybox.h"
+#include "libbb.h"
-int tty_main(int argc, char **argv)
+int tty_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
+int tty_main(int argc UNUSED_PARAM, char **argv)
{
const char *s;
- int silent; /* Note: No longer relevant in SUSv3. */
+ IF_INCLUDE_SUSv2(int silent;) /* Note: No longer relevant in SUSv3. */
int retval;
- bb_default_error_retval = 2; /* SUSv3 requires > 1 for error. */
+ xfunc_error_retval = 2; /* SUSv3 requires > 1 for error. */
- silent = bb_getopt_ulflags(argc, argv, "s");
+ IF_INCLUDE_SUSv2(silent = getopt32(argv, "s");)
+ IF_INCLUDE_SUSv2(argv += optind;)
+ IF_NOT_INCLUDE_SUSv2(argv += 1;)
/* gnu tty outputs a warning that it is ignoring all args. */
- bb_warn_ignoring_args(argc - optind);
+ bb_warn_ignoring_args(argv[0]);
- retval = 0;
+ retval = EXIT_SUCCESS;
- if ((s = ttyname(0)) == NULL) {
- /* According to SUSv3, ttyname can on fail with EBADF or ENOTTY.
+ s = xmalloc_ttyname(STDIN_FILENO);
+ if (s == NULL) {
+ /* According to SUSv3, ttyname can fail with EBADF or ENOTTY.
* We know the file descriptor is good, so failure means not a tty. */
s = "not a tty";
- retval = 1;
- }
-
- if (!silent) {
- puts(s);
+ retval = EXIT_FAILURE;
}
+ IF_INCLUDE_SUSv2(if (!silent) puts(s);)
+ IF_NOT_INCLUDE_SUSv2(puts(s);)
- bb_fflush_stdout_and_exit(retval);
+ fflush_stdout_and_exit(retval);
}