1 | /* Copyright (C) 2005-2017 Free Software Foundation, Inc. |
2 | This file is part of the GNU C Library. |
3 | |
4 | The GNU C Library is free software; you can redistribute it and/or |
5 | modify it under the terms of the GNU Lesser General Public |
6 | License as published by the Free Software Foundation; either |
7 | version 2.1 of the License, or (at your option) any later version. |
8 | |
9 | The GNU C Library 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 GNU |
12 | Lesser General Public License for more details. |
13 | |
14 | You should have received a copy of the GNU Lesser General Public |
15 | License along with the GNU C Library; if not, see |
16 | <http://www.gnu.org/licenses/>. */ |
17 | |
18 | #include <errno.h> |
19 | #include <fcntl.h> |
20 | #include <stdarg.h> |
21 | #include <stddef.h> |
22 | #include <stdio.h> |
23 | #include <string.h> |
24 | #include <sys/stat.h> |
25 | #include <sysdep-cancel.h> |
26 | #include <not-cancel.h> |
27 | |
28 | |
29 | #ifndef OPENAT |
30 | # define OPENAT openat |
31 | #endif |
32 | |
33 | #define UNDERIZE(name) UNDERIZE_1 (name) |
34 | #define UNDERIZE_1(name) __##name |
35 | #define __OPENAT UNDERIZE (OPENAT) |
36 | |
37 | |
38 | /* Open FILE with access OFLAG. Interpret relative paths relative to |
39 | the directory associated with FD. If OFLAG includes O_CREAT or |
40 | O_TMPFILE, a fourth argument is the file protection. */ |
41 | int |
42 | __OPENAT (int fd, const char *file, int oflag, ...) |
43 | { |
44 | mode_t mode = 0; |
45 | if (__OPEN_NEEDS_MODE (oflag)) |
46 | { |
47 | va_list arg; |
48 | va_start (arg, oflag); |
49 | mode = va_arg (arg, mode_t); |
50 | va_end (arg); |
51 | } |
52 | |
53 | /* We have to add the O_LARGEFILE flag for openat64. */ |
54 | #ifdef MORE_OFLAGS |
55 | oflag |= MORE_OFLAGS; |
56 | #endif |
57 | |
58 | return SYSCALL_CANCEL (openat, fd, file, oflag, mode); |
59 | } |
60 | libc_hidden_def (__OPENAT) |
61 | weak_alias (__OPENAT, OPENAT) |
62 | |