1/* Copyright (C) 2009-2016 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 <http://www.gnu.org/licenses/>. */
17
18#include <sys/uio.h>
19#include <sysdep-cancel.h>
20
21#ifndef __OFF_T_MATCHES_OFF64_T
22
23# ifdef __ASSUME_PREADV
24
25# ifndef __NR_preadv
26# define __NR_preadv __NR_preadv64
27# endif
28
29ssize_t
30preadv (int fd, const struct iovec *vector, int count, off_t offset)
31{
32 return SYSCALL_CANCEL (preadv, fd, vector, count, LO_HI_LONG (offset));
33}
34# else
35static ssize_t __atomic_preadv_replacement (int, const struct iovec *,
36 int, off_t) internal_function;
37ssize_t
38preadv (int fd, const struct iovec *vector, int count, off_t offset)
39{
40# ifdef __NR_preadv
41 ssize_t result = SYSCALL_CANCEL (preadv, fd, vector, count,
42 LO_HI_LONG (offset));
43 if (result >= 0 || errno != ENOSYS)
44 return result;
45# endif
46 return __atomic_preadv_replacement (fd, vector, count, offset);
47}
48# define PREADV static internal_function __atomic_preadv_replacement
49# define PREAD __pread
50# define OFF_T off_t
51# include <sysdeps/posix/preadv.c>
52# endif /* __ASSUME_PREADV */
53#endif
54