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git.ipfire.org Git - thirdparty/glibc.git/blob - sysdeps/unix/sysv/linux/preadv64.c
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1 /* Copyright (C) 2016-2018 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
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.
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.
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/>. */
19 #include <sysdep-cancel.h>
21 #ifdef __ASSUME_PREADV
23 # ifndef __NR_preadv64
24 # define __NR_preadv64 __NR_preadv
28 preadv64 (int fd
, const struct iovec
*vector
, int count
, off64_t offset
)
30 return SYSCALL_CANCEL (preadv64
, fd
, vector
, count
, LO_HI_LONG (offset
));
33 static ssize_t
__atomic_preadv64_replacement (int, const struct iovec
*,
36 preadv64 (int fd
, const struct iovec
*vector
, int count
, off64_t offset
)
39 ssize_t result
= SYSCALL_CANCEL (preadv64
, fd
, vector
, count
,
41 if (result
>= 0 || errno
!= ENOSYS
)
44 return __atomic_preadv64_replacement (fd
, vector
, count
, offset
);
46 # define PREADV static __atomic_preadv64_replacement
47 # define PREAD __pread64
48 # define OFF_T off64_t
49 # include <sysdeps/posix/preadv_common.c>
51 libc_hidden_def (preadv64
)
53 #ifdef __OFF_T_MATCHES_OFF64_T
54 strong_alias (preadv64
, preadv
)
55 libc_hidden_def (preadv
)