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2b778ceb | 1 | /* Copyright (C) 2016-2021 Free Software Foundation, Inc. |
4e778151 | 2 | This file is part of the GNU C Library. |
e109c612 | 3 | |
4e778151 AZ |
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 | |
5a82c748 | 16 | <https://www.gnu.org/licenses/>. */ |
4e778151 AZ |
17 | |
18 | #include <sys/uio.h> | |
19 | #include <sysdep-cancel.h> | |
20 | ||
21 | #ifdef __ASSUME_PREADV | |
22 | ||
4e778151 AZ |
23 | ssize_t |
24 | preadv64 (int fd, const struct iovec *vector, int count, off64_t offset) | |
25 | { | |
d241dee4 | 26 | return SYSCALL_CANCEL (preadv, fd, vector, count, LO_HI_LONG (offset)); |
4e778151 AZ |
27 | } |
28 | #else | |
29 | static ssize_t __atomic_preadv64_replacement (int, const struct iovec *, | |
b41bd5bc | 30 | int, off64_t); |
4e778151 AZ |
31 | ssize_t |
32 | preadv64 (int fd, const struct iovec *vector, int count, off64_t offset) | |
33 | { | |
d241dee4 | 34 | ssize_t result = SYSCALL_CANCEL (preadv, fd, vector, count, |
4751bbe2 | 35 | LO_HI_LONG (offset)); |
4e778151 AZ |
36 | if (result >= 0 || errno != ENOSYS) |
37 | return result; | |
4e778151 AZ |
38 | return __atomic_preadv64_replacement (fd, vector, count, offset); |
39 | } | |
b41bd5bc | 40 | # define PREADV static __atomic_preadv64_replacement |
4e778151 AZ |
41 | # define PREAD __pread64 |
42 | # define OFF_T off64_t | |
c79a72aa | 43 | # include <sysdeps/posix/preadv_common.c> |
4e778151 | 44 | #endif |
52bd9381 | 45 | libc_hidden_def (preadv64) |
4e778151 | 46 | |
6320de95 | 47 | #ifdef __OFF_T_MATCHES_OFF64_T |
4e778151 | 48 | strong_alias (preadv64, preadv) |
52bd9381 | 49 | libc_hidden_def (preadv) |
4e778151 | 50 | #endif |