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04277e02 | 1 | /* Copyright (C) 2005-2019 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 PE |
15 | License along with the GNU C Library; if not, see |
16 | <http://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 | ||
26 | /* Some mostly-generic code (e.g. sysdeps/posix/getcwd.c) uses this variable | |
27 | if __ASSUME_ATFCTS is not defined. */ | |
28 | #ifndef __ASSUME_ATFCTS | |
29 | int __have_atfcts; | |
30 | #endif | |
4973cbe5 UD |
31 | |
32 | /* Open FILE with access OFLAG. Interpret relative paths relative to | |
65f6f938 | 33 | the directory associated with FD. If O_CREAT or O_TMPFILE is in OFLAG, a |
4973cbe5 UD |
34 | third argument is the file protection. */ |
35 | int | |
4bee4cd9 | 36 | __openat (int fd, const char *file, int oflag, ...) |
4973cbe5 UD |
37 | { |
38 | int mode; | |
39 | ||
40 | if (file == NULL) | |
41 | { | |
42 | __set_errno (EINVAL); | |
43 | return -1; | |
44 | } | |
45 | ||
26cec518 | 46 | if (fd != AT_FDCWD && file[0] != '/') |
4973cbe5 UD |
47 | { |
48 | /* Check FD is associated with a directory. */ | |
49 | struct stat64 st; | |
50 | if (__fxstat64 (_STAT_VER, fd, &st) != 0) | |
51 | return -1; | |
52 | ||
53 | if (!S_ISDIR (st.st_mode)) | |
54 | { | |
55 | __set_errno (ENOTDIR); | |
56 | return -1; | |
57 | } | |
58 | } | |
59 | ||
65f6f938 | 60 | if (__OPEN_NEEDS_MODE (oflag)) |
4973cbe5 UD |
61 | { |
62 | va_list arg; | |
63 | va_start (arg, oflag); | |
64 | mode = va_arg (arg, int); | |
65 | va_end (arg); | |
4bee4cd9 RM |
66 | |
67 | ignore_value (mode); | |
4973cbe5 UD |
68 | } |
69 | ||
70 | __set_errno (ENOSYS); | |
71 | return -1; | |
72 | } | |
e2c7e1de RM |
73 | libc_hidden_def (__openat) |
74 | weak_alias (__openat, openat) | |
4973cbe5 UD |
75 | stub_warning (openat) |
76 | ||
cc0e6ed8 RM |
77 | /* __openat_2 is a generic wrapper that calls __openat. |
78 | So give a stub warning for that symbol too. */ | |
ddfd0535 | 79 | stub_warning (__openat_2) |