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04277e02 | 1 | /* Copyright (C) 2016-2019 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 | |
16 | <http://www.gnu.org/licenses/>. */ | |
17 | ||
18 | #include <sys/uio.h> | |
19 | #include <sysdep-cancel.h> | |
20 | ||
21 | #ifdef __ASSUME_PREADV | |
22 | ||
23 | # ifndef __NR_preadv64 | |
24 | # define __NR_preadv64 __NR_preadv | |
25 | # endif | |
26 | ||
27 | ssize_t | |
28 | preadv64 (int fd, const struct iovec *vector, int count, off64_t offset) | |
29 | { | |
4751bbe2 | 30 | return SYSCALL_CANCEL (preadv64, fd, vector, count, LO_HI_LONG (offset)); |
4e778151 AZ |
31 | } |
32 | #else | |
33 | static ssize_t __atomic_preadv64_replacement (int, const struct iovec *, | |
b41bd5bc | 34 | int, off64_t); |
4e778151 AZ |
35 | ssize_t |
36 | preadv64 (int fd, const struct iovec *vector, int count, off64_t offset) | |
37 | { | |
38 | #ifdef __NR_preadv64 | |
39 | ssize_t result = SYSCALL_CANCEL (preadv64, fd, vector, count, | |
4751bbe2 | 40 | LO_HI_LONG (offset)); |
4e778151 AZ |
41 | if (result >= 0 || errno != ENOSYS) |
42 | return result; | |
43 | #endif | |
44 | return __atomic_preadv64_replacement (fd, vector, count, offset); | |
45 | } | |
b41bd5bc | 46 | # define PREADV static __atomic_preadv64_replacement |
4e778151 AZ |
47 | # define PREAD __pread64 |
48 | # define OFF_T off64_t | |
c79a72aa | 49 | # include <sysdeps/posix/preadv_common.c> |
4e778151 | 50 | #endif |
52bd9381 | 51 | libc_hidden_def (preadv64) |
4e778151 | 52 | |
6320de95 | 53 | #ifdef __OFF_T_MATCHES_OFF64_T |
4e778151 | 54 | strong_alias (preadv64, preadv) |
52bd9381 | 55 | libc_hidden_def (preadv) |
4e778151 | 56 | #endif |