1 /* Test that openat works.
2 Copyright (C) 2009 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/>. */
17 /* Written by Eric Blake <ebb9@byu.net>, 2009. */
27 #define ASSERT(expr) \
32 fprintf (stderr, "%s:%d: assertion failed\n", __FILE__, __LINE__); \
42 /* FIXME - add more tests. For example, share /dev/null and
43 trailing slash tests with test-open, and do more checks for
44 proper fd handling. */
46 /* Check that even when *-safer modules are in use, plain openat can
47 land in fd 0. Do this test last, since it is destructive to
49 ASSERT (close (STDIN_FILENO) == 0);
50 ASSERT (openat (AT_FDCWD, ".", O_RDONLY) == STDIN_FILENO);
52 int dfd = open (".", O_RDONLY);
53 ASSERT (STDIN_FILENO < dfd);
54 ASSERT (chdir ("..") == 0);
55 ASSERT (close (STDIN_FILENO) == 0);
56 ASSERT (openat (dfd, ".", O_RDONLY) == STDIN_FILENO);
57 ASSERT (close (dfd) == 0);