1/* Open a file by name. Stub version.
2 Copyright (C) 1991-2022 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
25
26/* Open FILE with access OFLAG. If O_CREAT or O_TMPFILE is in OFLAG,
27 a third argument is the file protection. */
28int
29__libc_open (const char *file, int oflag)
30{
31 int mode;
32
33 if (file == NULL)
34 {
35 __set_errno (EINVAL);
36 return -1;
37 }
38
39 if (__OPEN_NEEDS_MODE (oflag))
40 {
41 va_list arg;
42 va_start(arg, oflag);
43 mode = va_arg(arg, int);
44 va_end(arg);
45 }
46
47 __set_errno (ENOSYS);
48 return -1;
49}
50libc_hidden_def (__libc_open)
51weak_alias (__libc_open, __open)
52libc_hidden_weak (__open)
53weak_alias (__libc_open, open)
54
55stub_warning (open)
56
57/* __open_2 is a generic wrapper that calls __open.
58 So give a stub warning for that symbol too. */
59stub_warning (__open_2)
60

source code of glibc/io/open.c