1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
|
/* Copyright (C) 2016-2018 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
#include <sys/uio.h>
#include <sysdep-cancel.h>
#ifdef __ASSUME_PREADV
# ifndef __NR_preadv64
# define __NR_preadv64 __NR_preadv
# endif
ssize_t
preadv64 (int fd, const struct iovec *vector, int count, off64_t offset)
{
return SYSCALL_CANCEL (preadv64, fd, vector, count, LO_HI_LONG (offset));
}
#else
static ssize_t __atomic_preadv64_replacement (int, const struct iovec *,
int, off64_t);
ssize_t
preadv64 (int fd, const struct iovec *vector, int count, off64_t offset)
{
#ifdef __NR_preadv64
ssize_t result = SYSCALL_CANCEL (preadv64, fd, vector, count,
LO_HI_LONG (offset));
if (result >= 0 || errno != ENOSYS)
return result;
#endif
return __atomic_preadv64_replacement (fd, vector, count, offset);
}
# define PREADV static __atomic_preadv64_replacement
# define PREAD __pread64
# define OFF_T off64_t
# include <sysdeps/posix/preadv_common.c>
#endif
libc_hidden_def (preadv64)
#ifdef __OFF_T_MATCHES_OFF64_T
strong_alias (preadv64, preadv)
libc_hidden_def (preadv)
#endif
|
