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/*

 *  This file contains the support infrastructure used to manage the

 *  table of integer style file descriptors used by the socket calls.

 *

 *  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.

 *

 *  libio_sockets.c,v 1.8 2001/08/03 16:06:33 joel Exp

 */

#if HAVE_CONFIG_H

#include "config.h"

#endif

#include <rtems/libio_.h>             /* libio_.h pulls in rtems */

#include <rtems.h>

#include <errno.h>

/*

 * Convert an RTEMS file descriptor to a BSD socket pointer.

 */

struct socket *rtems_bsdnet_fdToSocket(

  int fd

)

{

  rtems_libio_t *iop;

  /* same as rtems_libio_check_fd(_fd) but different return */

  if ((unsigned32)fd >= rtems_libio_number_iops) {

    errno = EBADF;

    return NULL;

  }

  iop = &rtems_libio_iops[fd];

  /* same as rtems_libio_check_is_open(iop) but different return */

  if ((iop->flags & LIBIO_FLAGS_OPEN) == 0) {

    errno = EBADF;

    return NULL;

  }

  if (iop->data1 == NULL)

    errno = EBADF;

  return iop->data1;

}

/*

 * Create an RTEMS file descriptor for a socket

 */

int rtems_bsdnet_makeFdForSocket(

  void *so,

  const rtems_filesystem_file_handlers_r *h

)

{

  rtems_libio_t *iop;

  int fd;

  iop = rtems_libio_allocate();

  if (iop == 0) {

      errno = ENFILE;

      return -1;

  }

  fd = iop - rtems_libio_iops;

  iop->flags |= LIBIO_FLAGS_WRITE | LIBIO_FLAGS_READ;

  iop->data0 = fd;

  iop->data1 = so;

  iop->handlers = (rtems_filesystem_file_handlers_r *) h;

  return fd;

}