1 /* Copyright (C) 2009-2016 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/>. */
21 #include <sys/param.h>
22 #if __WORDSIZE == 64 && !defined PWRITEV
23 /* Hide the pwritev64 declaration. */
24 # define pwritev64 __redirect_pwritev64
28 #include <sysdep-cancel.h>
29 #include <sys/syscall.h>
30 #include <kernel-features.h>
34 # define PWRITEV pwritev
35 # define PWRITEV_REPLACEMENT __atomic_pwritev_replacement
36 # define PWRITE __pwrite
40 #define LO_HI_LONG(val) \
42 (off_t) ((((uint64_t) (val)) >> (sizeof (long) * 4)) >> (sizeof (long) * 4))
44 #ifndef __ASSUME_PWRITEV
45 static ssize_t
PWRITEV_REPLACEMENT (int, const struct iovec
*,
46 int, OFF_T
) internal_function
;
51 PWRITEV (int fd
, const struct iovec
*vector
, int count
, OFF_T offset
)
56 result
= SYSCALL_CANCEL (pwritev
, fd
, vector
, count
, LO_HI_LONG (offset
));
58 # ifdef __ASSUME_PWRITEV
63 #ifndef __ASSUME_PWRITEV
65 if (result
>= 0 || errno
!= ENOSYS
)
69 return PWRITEV_REPLACEMENT (fd
, vector
, count
, offset
);
72 #if __WORDSIZE == 64 && defined pwritev64
74 strong_alias (pwritev
, pwritev64
)
77 #ifndef __ASSUME_PWRITEV
79 # define PWRITEV static internal_function PWRITEV_REPLACEMENT
80 # include <sysdeps/posix/pwritev.c>