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/* Synchronize I/O in given file descriptor.
Copyright (C) 1997-2013 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
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/>. */
/* We use an UGLY hack to prevent gcc from finding us cheating. The
implementation of aio_fsync and aio_fsync64 are identical and so
we want to avoid code duplication by using aliases. But gcc sees
the different parameter lists and prints a warning. We define here
a function so that aio_fsync64 has no prototype. */
#define aio_fsync64 XXX
#include <aio.h>
/* And undo the hack. */
#undef aio_fsync64
#include <errno.h>
#include <fcntl.h>
#include <aio_misc.h>
int
aio_fsync (int op, struct aiocb *aiocbp)
{
int flags;
if (op != O_DSYNC && __builtin_expect (op != O_SYNC, 0))
{
__set_errno (EINVAL);
return -1;
}
flags = fcntl (aiocbp->aio_fildes, F_GETFL);
if (__builtin_expect (flags == -1, 0)
|| __builtin_expect ((flags & O_ACCMODE) == O_RDONLY, 0))
{
__set_errno (EBADF);
return -1;
}
return (__aio_enqueue_request ((aiocb_union *) aiocbp,
op == O_SYNC ? LIO_SYNC : LIO_DSYNC) == NULL
? -1 : 0);
}
weak_alias (aio_fsync, aio_fsync64)
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