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329ea513 | 1 | /* Linux openat syscall implementation, LFS. |
04277e02 | 2 | Copyright (C) 2007-2019 Free Software Foundation, Inc. |
bafcba22 | 3 | This file is part of the GNU C Library. |
4973cbe5 | 4 | |
bafcba22 AZ |
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 | |
5a82c748 | 17 | <https://www.gnu.org/licenses/>. */ |
bafcba22 AZ |
18 | |
19 | #include <fcntl.h> | |
20 | #include <stdarg.h> | |
21 | ||
22 | #include <sysdep-cancel.h> | |
0bb2fabc AZ |
23 | |
24 | #ifdef __OFF_T_MATCHES_OFF64_T | |
25 | # define EXTRA_OPEN_FLAGS 0 | |
26 | #else | |
27 | # define EXTRA_OPEN_FLAGS O_LARGEFILE | |
28 | #endif | |
bafcba22 AZ |
29 | |
30 | /* Open FILE with access OFLAG. Interpret relative paths relative to | |
31 | the directory associated with FD. If OFLAG includes O_CREAT or | |
32 | O_TMPFILE, a fourth argument is the file protection. */ | |
33 | int | |
34 | __libc_openat64 (int fd, const char *file, int oflag, ...) | |
35 | { | |
36 | mode_t mode = 0; | |
37 | if (__OPEN_NEEDS_MODE (oflag)) | |
38 | { | |
39 | va_list arg; | |
40 | va_start (arg, oflag); | |
41 | mode = va_arg (arg, mode_t); | |
42 | va_end (arg); | |
43 | } | |
44 | ||
bafcba22 AZ |
45 | return SYSCALL_CANCEL (openat, fd, file, oflag | EXTRA_OPEN_FLAGS, mode); |
46 | } | |
47 | ||
48 | strong_alias (__libc_openat64, __openat64) | |
49 | libc_hidden_weak (__openat64) | |
50 | weak_alias (__libc_openat64, openat64) | |
51 | ||
52 | #ifdef __OFF_T_MATCHES_OFF64_T | |
53 | strong_alias (__libc_openat64, __openat) | |
54 | libc_hidden_weak (__openat) | |
55 | weak_alias (__libc_openat64, openat) | |
56 | #endif |