1/* Copyright (C) 2016-2020 Free Software Foundation, Inc.
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
15 License along with the GNU C Library; if not, see
16 <https://www.gnu.org/licenses/>. */
17
18#include <sys/uio.h>
19#include <sysdep-cancel.h>
20
21#ifdef __ASSUME_PREADV
22
23ssize_t
24preadv64 (int fd, const struct iovec *vector, int count, off64_t offset)
25{
26 return SYSCALL_CANCEL (preadv, fd, vector, count, LO_HI_LONG (offset));
27}
28#else
29static ssize_t __atomic_preadv64_replacement (int, const struct iovec *,
30 int, off64_t);
31ssize_t
32preadv64 (int fd, const struct iovec *vector, int count, off64_t offset)
33{
34 ssize_t result = SYSCALL_CANCEL (preadv, fd, vector, count,
35 LO_HI_LONG (offset));
36 if (result >= 0 || errno != ENOSYS)
37 return result;
38 return __atomic_preadv64_replacement (fd, vector, count, offset);
39}
40# define PREADV static __atomic_preadv64_replacement
41# define PREAD __pread64
42# define OFF_T off64_t
43# include <sysdeps/posix/preadv_common.c>
44#endif
45libc_hidden_def (preadv64)
46
47#ifdef __OFF_T_MATCHES_OFF64_T
48strong_alias (preadv64, preadv)
49libc_hidden_def (preadv)
50#endif
51