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1 | /* Copyright (C) 2005-2024 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) |