Subversion Repositories openrisc_2011-10-31

/*

 *  IMFS_mknod

 *

 *  Routine to create a node in the IMFS file system.

 *

 *  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: imfs_mknod.c,v 1.2 2001-09-27 12:01:15 chris Exp $

 */

#include <sys/types.h>

#include <sys/stat.h>

#include <fcntl.h>

#include <unistd.h>

#include <errno.h>

#include <stdlib.h>

#include "imfs.h"

#include "libio_.h"

int IMFS_mknod(

  const char                        *token,      /* IN */

  mode_t                             mode,       /* IN */

  dev_t                              dev,        /* IN */

  rtems_filesystem_location_info_t  *pathloc     /* IN/OUT */

)

{

  IMFS_token_types   type = 0;

  IMFS_jnode_t      *new_node;

  int                result;

  char               new_name[ IMFS_NAME_MAX + 1 ];

  IMFS_types_union   info;

  IMFS_get_token( token, new_name, &result );

  /*

   *  Figure out what type of IMFS node this is.

   */

  if ( S_ISDIR(mode) )

    type = IMFS_DIRECTORY;

  else if ( S_ISREG(mode) )

    type = IMFS_MEMORY_FILE;

  else if ( S_ISBLK(mode) || S_ISCHR(mode) ) {

    type = IMFS_DEVICE;

    rtems_filesystem_split_dev_t( dev, info.device.major, info.device.minor );

  } else  {

    set_errno_and_return_minus_one( EINVAL );

  }

  /*

   *  Allocate and fill in an IMFS jnode

   */

  new_node = IMFS_create_node(

    pathloc,

    type,

    new_name,

    mode,

    &info

  );

  if ( !new_node )

    set_errno_and_return_minus_one( ENOMEM );

  return 0;

}