1 /* Test of ttyname_r(3).
2 Copyright (C) 2010-2011 Free Software Foundation, Inc.
4 This program is free software: you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation; either version 3 of the License, or
7 (at your option) any later version.
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
14 You should have received a copy of the GNU General Public License
15 along with this program. If not, see <http://www.gnu.org/licenses/>. */
21 #include "signature.h"
22 SIGNATURE_CHECK (ttyname_r, int, (int, char *, size_t));
37 /* Open the controlling tty of the current process. */
38 fd = open ("/dev/tty", O_RDONLY);
41 fprintf (stderr, "Skipping test: cannot open controlling tty\n");
45 ASSERT (ttyname_r (fd, buf, 1) == ERANGE);
47 ASSERT (ttyname_r (fd, buf, sizeof (buf)) == 0);
48 ASSERT (memcmp (buf, "/dev/", 5) == 0);