1 /* Test opening a directory stream from a file descriptor.
2 Copyright (C) 2009, 2010 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. */
23 #include "signature.h"
24 SIGNATURE_CHECK (fdopendir, DIR *, (int));
38 /* A non-directory cannot be turned into a directory stream. */
39 fd = open ("test-fdopendir.tmp", O_RDONLY | O_CREAT, 0600);
42 ASSERT (fdopendir (fd) == NULL);
43 ASSERT (errno == ENOTDIR);
44 ASSERT (close (fd) == 0);
45 ASSERT (unlink ("test-fdopendir.tmp") == 0);
47 /* A bad fd cannot be turned into a stream. */
49 ASSERT (fdopendir (-1) == NULL);
50 ASSERT (errno == EBADF);
52 /* This should work. */
53 fd = open (".", O_RDONLY);
56 /* We know that fd is now out of our reach, but it is not specified
57 whether it is closed now or at the closedir. We also can't
58 guarantee whether dirfd returns fd, some other descriptor, or
61 ASSERT (closedir (d) == 0);
62 /* Now we can guarantee that fd must be closed. */
64 ASSERT (dup2 (fd, fd) == -1);
65 ASSERT (errno == EBADF);