1 | /* Copyright (C) 2005-2022 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 | <https://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 <sys/stat.h> |
24 | |
25 | /* Open FILE with access OFLAG. Interpret relative paths relative to |
26 | the directory associated with FD. If O_CREAT or O_TMPFILE is in OFLAG, a |
27 | third argument is the file protection. */ |
28 | int |
29 | __openat64 (int fd, 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 (fd != AT_FDCWD && file[0] != '/') |
40 | { |
41 | /* Check FD is associated with a directory. */ |
42 | struct stat64 st; |
43 | if (__fstat64 (fd, &st) != 0) |
44 | return -1; |
45 | |
46 | if (!S_ISDIR (st.st_mode)) |
47 | { |
48 | __set_errno (ENOTDIR); |
49 | return -1; |
50 | } |
51 | } |
52 | |
53 | if (__OPEN_NEEDS_MODE (oflag)) |
54 | { |
55 | va_list arg; |
56 | va_start (arg, oflag); |
57 | mode = va_arg (arg, int); |
58 | va_end (arg); |
59 | |
60 | ignore_value (mode); |
61 | } |
62 | |
63 | __set_errno (ENOSYS); |
64 | return -1; |
65 | } |
66 | libc_hidden_def (__openat64) |
67 | weak_alias (__openat64, openat64) |
68 | stub_warning (openat64) |
69 | |
70 | /* __openat64_2 is a generic wrapper that calls __openat64. |
71 | So give a stub warning for that symbol too. */ |
72 | stub_warning (__openat_2) |
73 | |