blob: 5527747cff0b5724e0d5b425c084f4165aad7c65 (
plain) (
tree)
|
|
/*
* ioctl() system call
*
* This routine is not defined in the POSIX 1003.1b standard but is
* commonly supported on most UNIX and POSIX systems.
*
* COPYRIGHT (c) 1989-1999.
* On-Line Applications Research Corporation (OAR).
*
* 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.
*
* $Id$
*/
#if HAVE_CONFIG_H
#include "config.h"
#endif
#include <stdarg.h>
#include <rtems/libio_.h>
#include <rtems/seterr.h>
#include <unistd.h>
int ioctl(
int fd,
int command,
...
)
{
va_list ap;
rtems_status_code rc;
rtems_libio_t *iop;
void *buffer;
rtems_libio_check_fd( fd );
iop = rtems_libio_iop( fd );
rtems_libio_check_is_open(iop);
va_start(ap, command);
buffer = va_arg(ap, void *);
/*
* Now process the ioctl().
*/
if ( !iop->handlers )
rtems_set_errno_and_return_minus_one( EBADF );
if ( !iop->handlers->ioctl_h )
rtems_set_errno_and_return_minus_one( ENOTSUP );
rc = (*iop->handlers->ioctl_h)( iop, command, buffer );
return rc;
}
|