1/* Linux open syscall implementation, LFS.
2 Copyright (C) 1991-2021 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 <sys/types.h>
20#include <sys/stat.h>
21#include <fcntl.h>
22#include <stdarg.h>
23
24#include <sysdep-cancel.h>
25
26
27#ifdef __OFF_T_MATCHES_OFF64_T
28# define EXTRA_OPEN_FLAGS 0
29#else
30# define EXTRA_OPEN_FLAGS O_LARGEFILE
31#endif
32
33/* Open FILE with access OFLAG. If O_CREAT or O_TMPFILE is in OFLAG,
34 a third argument is the file protection. */
35int
36__libc_open64 (const char *file, int oflag, ...)
37{
38 int mode = 0;
39
40 if (__OPEN_NEEDS_MODE (oflag))
41 {
42 va_list arg;
43 va_start (arg, oflag);
44 mode = va_arg (arg, int);
45 va_end (arg);
46 }
47
48 return SYSCALL_CANCEL (openat, AT_FDCWD, file, oflag | EXTRA_OPEN_FLAGS,
49 mode);
50}
51
52strong_alias (__libc_open64, __open64)
53libc_hidden_weak (__open64)
54weak_alias (__libc_open64, open64)
55
56#ifdef __OFF_T_MATCHES_OFF64_T
57strong_alias (__libc_open64, __libc_open)
58strong_alias (__libc_open64, __open)
59libc_hidden_weak (__open)
60weak_alias (__libc_open64, open)
61#endif
62