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dff8da6b | 1 | /* Copyright (C) 2005-2024 Free Software Foundation, Inc. |
4973cbe5 UD |
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 | |
59ba27a6 | 15 | License along with the GNU C Library; if not, see |
5a82c748 | 16 | <https://www.gnu.org/licenses/>. */ |
4973cbe5 UD |
17 | |
18 | #include <errno.h> | |
19 | #include <fcntl.h> | |
20 | #include <stdarg.h> | |
21 | #include <stddef.h> | |
ddfd0535 | 22 | #include <stdio.h> |
4973cbe5 | 23 | #include <sys/stat.h> |
497a03d6 RM |
24 | #include <kernel-features.h> |
25 | ||
4973cbe5 UD |
26 | |
27 | /* Open FILE with access OFLAG. Interpret relative paths relative to | |
65f6f938 | 28 | the directory associated with FD. If O_CREAT or O_TMPFILE is in OFLAG, a |
4973cbe5 UD |
29 | third argument is the file protection. */ |
30 | int | |
4bee4cd9 | 31 | __openat (int fd, const char *file, int oflag, ...) |
4973cbe5 UD |
32 | { |
33 | int mode; | |
34 | ||
35 | if (file == NULL) | |
36 | { | |
37 | __set_errno (EINVAL); | |
38 | return -1; | |
39 | } | |
40 | ||
26cec518 | 41 | if (fd != AT_FDCWD && file[0] != '/') |
4973cbe5 UD |
42 | { |
43 | /* Check FD is associated with a directory. */ | |
44 | struct stat64 st; | |
04986243 | 45 | if (__fstat64 (fd, &st) != 0) |
4973cbe5 UD |
46 | return -1; |
47 | ||
48 | if (!S_ISDIR (st.st_mode)) | |
49 | { | |
50 | __set_errno (ENOTDIR); | |
51 | return -1; | |
52 | } | |
53 | } | |
54 | ||
65f6f938 | 55 | if (__OPEN_NEEDS_MODE (oflag)) |
4973cbe5 UD |
56 | { |
57 | va_list arg; | |
58 | va_start (arg, oflag); | |
59 | mode = va_arg (arg, int); | |
60 | va_end (arg); | |
4bee4cd9 RM |
61 | |
62 | ignore_value (mode); | |
4973cbe5 UD |
63 | } |
64 | ||
65 | __set_errno (ENOSYS); | |
66 | return -1; | |
67 | } | |
e2c7e1de RM |
68 | libc_hidden_def (__openat) |
69 | weak_alias (__openat, openat) | |
4973cbe5 UD |
70 | stub_warning (openat) |
71 | ||
cc0e6ed8 RM |
72 | /* __openat_2 is a generic wrapper that calls __openat. |
73 | So give a stub warning for that symbol too. */ | |
ddfd0535 | 74 | stub_warning (__openat_2) |