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/*
* fsync() - POSIX 1003.1b 6.6.1 - Synchronize the State of a File
*
* COPYRIGHT (c) 1989-1998.
* On-Line Applications Research Corporation (OAR).
* Copyright assigned to U.S. Government, 1994.
*
* The license and distribution terms for this file may be
* found in the file LICENSE in this distribution or at
* http://www.OARcorp.com/rtems/license.html.
*
* $Id$
*/
#include <unistd.h>
#include "libio_.h"
int fsync(
int fd
)
{
rtems_libio_t *iop;
rtems_libio_check_fd( fd );
iop = rtems_libio_iop( fd );
rtems_libio_check_is_open(iop);
rtems_libio_check_permissions( iop, LIBIO_FLAGS_WRITE );
/*
* If this file descriptor is mapped to an external set of handlers,
* then pass the request on to them.
*/
if ( iop->flags & LIBIO_FLAGS_HANDLER_MASK )
set_errno_and_return_minus_one( EBADF );
/*
* Now process the fsync().
*/
if ( !iop->handlers->fsync )
set_errno_and_return_minus_one( ENOTSUP );
return (*iop->handlers->fsync)( iop );
}
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