/*
 * Copyright (c) 2016 Joel Sherrill <joel@rtems.org>.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

#ifndef _POSIX_DEVCTL_h_
#define _POSIX_DEVCTL_h_

/*
 * The posix_devctl() method is defined by POSIX 1003.26-2003. Aside
 * from the single method, it adds the following requirements:
 *
 *   + define _POSIX_26_VERSION to 200312L
 *   + add _SC_POSIX_26_VERSION in <unistd.h>. Return _POSIX_26_VERSION
 *   + application must define _POSIX_26_C_SOURCE to use posix_devctl().
 *   + posix_devctl() is prototyped in <devctl.h>
 */

#ifdef _POSIX_26_C_SOURCE
#include <stddef.h>

int posix_devctl(
  int            fd,
  int            dcmd,
  void *restrict dev_data_ptr,
  size_t         nbyte,
  int *restrict  dev_info_ptr
);
#endif

#endif
