1 | /* openat -- Open a file named relative to an open directory. Hurd version. |
2 | Copyright (C) 2006-2022 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 <errno.h> |
20 | #include <fcntl.h> |
21 | #include <stdarg.h> |
22 | #include <stddef.h> |
23 | #include <stdio.h> |
24 | #include <sys/stat.h> |
25 | #include <hurd.h> |
26 | #include <hurd/fd.h> |
27 | #include <sysdep-cancel.h> |
28 | |
29 | /* Open FILE with access OFLAG. Interpret relative paths relative to |
30 | the directory associated with FD. If O_CREAT or O_TMPFILE is in OFLAG, a |
31 | third argument is the file protection. */ |
32 | int |
33 | __openat (int fd, const char *file, int oflag, ...) |
34 | { |
35 | mode_t mode; |
36 | io_t port; |
37 | int cancel_oldtype; |
38 | |
39 | if (__OPEN_NEEDS_MODE (oflag)) |
40 | { |
41 | va_list arg; |
42 | va_start (arg, oflag); |
43 | mode = va_arg (arg, mode_t); |
44 | va_end (arg); |
45 | } |
46 | else |
47 | mode = 0; |
48 | |
49 | cancel_oldtype = LIBC_CANCEL_ASYNC(); |
50 | port = __file_name_lookup_at (fd, 0, file, oflag, mode); |
51 | LIBC_CANCEL_RESET (cancel_oldtype); |
52 | |
53 | if (port == MACH_PORT_NULL) |
54 | return -1; |
55 | |
56 | return _hurd_intern_fd (port, oflag, 1); |
57 | } |
58 | libc_hidden_def (__openat) |
59 | weak_alias (__openat, openat) |
60 | |
61 | /* openat64 is just the same as openat for us. */ |
62 | weak_alias (__openat, __openat64) |
63 | libc_hidden_weak (__openat64) |
64 | weak_alias (__openat, openat64) |
65 | |