1 | /* Open a directory stream from a file descriptor. Hurd version. |
2 | Copyright (C) 2005-2022 Free Software Foundation, Inc. |
3 | This file is part of the GNU C Library. |
4 | |
5 | The GNU C Library is free software; you can redistribute it and/or |
6 | modify it under the terms of the GNU Lesser General Public |
7 | License as published by the Free Software Foundation; either |
8 | version 2.1 of the License, or (at your option) any later version. |
9 | |
10 | The GNU C Library is distributed in the hope that it will be useful, |
11 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
13 | Lesser General Public License for more details. |
14 | |
15 | You should have received a copy of the GNU Lesser General Public |
16 | License along with the GNU C Library; if not, see |
17 | <https://www.gnu.org/licenses/>. */ |
18 | |
19 | #include <dirent.h> |
20 | #include <errno.h> |
21 | #include <hurd.h> |
22 | #include <hurd/fd.h> |
23 | #include <fcntl.h> |
24 | |
25 | DIR *_hurd_fd_opendir (struct hurd_fd *d); /* opendir.c */ |
26 | |
27 | /* Open a directory stream on FD. */ |
28 | DIR * |
29 | __fdopendir (int fd) |
30 | { |
31 | struct hurd_fd *d = _hurd_fd_get (fd); |
32 | |
33 | if (d == NULL) |
34 | { |
35 | errno = EBADF; |
36 | return NULL; |
37 | } |
38 | |
39 | /* Ensure that it's a directory. */ |
40 | error_t err = HURD_FD_PORT_USE |
41 | (d, ({ |
42 | file_t dir = __file_name_lookup_under (port, "./" , |
43 | O_DIRECTORY | O_NOTRANS, 0);; |
44 | if (dir != MACH_PORT_NULL) |
45 | __mach_port_deallocate (__mach_task_self (), dir); |
46 | dir != MACH_PORT_NULL ? 0 : errno; |
47 | })); |
48 | |
49 | if (err) |
50 | { |
51 | errno = err; |
52 | return NULL; |
53 | } |
54 | |
55 | return _hurd_fd_opendir (d); |
56 | } |
57 | weak_alias (__fdopendir, fdopendir) |
58 | |