source: rtems/c/src/lib/libc/ioctl.c @ 9b05600

4.104.114.84.95
Last change on this file since 9b05600 was 9b05600, checked in by Joel Sherrill <joel.sherrill@…>, on Jun 14, 2000 at 8:22:31 PM

* empty log message *

  • Property mode set to 100644
File size: 970 bytes
Line 
1/*
2 *  ioctl() system call
3 *
4 *  This routine is not defined in the POSIX 1003.1b standard but is
5 *  commonly supported on most UNIX and POSIX systems.
6 *
7 *  COPYRIGHT (c) 1989-1999.
8 *  On-Line Applications Research Corporation (OAR).
9 *
10 *  The license and distribution terms for this file may be
11 *  found in the file LICENSE in this distribution or at
12 *  http://www.OARcorp.com/rtems/license.html.
13 *
14 *  $Id$
15 */
16
17#include "libio_.h"
18
19#include <unistd.h>
20
21int ioctl(
22  int  fd,
23  int  command,
24  ...
25) 
26{ 
27  va_list            ap;
28  rtems_status_code  rc;
29  rtems_libio_t     *iop;
30  void              *buffer;
31
32  rtems_libio_check_fd( fd );
33  iop = rtems_libio_iop( fd );
34  rtems_libio_check_is_open(iop);
35
36  va_start(ap, command);
37
38  buffer = va_arg(ap, void *);
39
40  /*
41   *  Now process the ioctl().
42   */
43
44  if ( !iop->handlers->ioctl )
45    set_errno_and_return_minus_one( ENOTSUP );
46
47  rc = (*iop->handlers->ioctl)( iop, command, buffer );
48
49  return rc;
50} 
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