Subversion Repositories openrisc_2011-10-31

/*

 *  Base file system initialization

 *

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

 */

#include <rtems.h>

#include <rtems/libio.h>

#include "imfs.h"

#include "libio_.h"

/*

 *  Global information for the base file system.

 */

rtems_filesystem_location_info_t rtems_filesystem_current;

rtems_filesystem_location_info_t rtems_filesystem_root;

nlink_t                          rtems_filesystem_link_counts;

/*

 *  Default mode for created files.

 */

mode_t rtems_filesystem_umask;

/*

 *  rtems_filesystem_initialize

 *

 *  Initialize the foundation of the file system with one instantiation

 *  of the IMFS with a single "/dev" directory in it.

 */

void rtems_filesystem_initialize( void )

{

#if !defined(RTEMS_UNIX)

#if 0

  int                                   i;

#endif

  int                                   status;

  rtems_filesystem_mount_table_entry_t *entry;

  rtems_filesystem_mount_table_t       *mt;

  /*

   *  Set the default umask to "022".

   */

  rtems_filesystem_umask = S_IWOTH | S_IROTH;

  init_fs_mount_table();

  /*

   *  mount the first filesystem.

   */

  if ( rtems_filesystem_mount_table_size == 0 )

    rtems_fatal_error_occurred( 0xABCD0001 );

  mt = &rtems_filesystem_mount_table[0];

  status = mount(

     &entry, mt->fs_ops, mt->fsoptions, mt->device, mt->mount_point );

  if ( status == -1 )

    rtems_fatal_error_occurred( 0xABCD0002 );

  rtems_filesystem_link_counts = 0;

  rtems_filesystem_root        = entry->mt_fs_root;

  rtems_filesystem_current     = rtems_filesystem_root;

  /*

   *  Traditionally RTEMS devices are under "/dev" so install this directory.

   *

   *  If the mkdir() fails, we can't print anything so just fatal error.

   *

   *  NOTE: UNIX root is 755 and owned by root/root (0/0).

   */

  status = mkdir( "/dev", S_IRWXU | S_IRWXG | S_IRWXO );

  if ( status != 0 )

    rtems_fatal_error_occurred( 0xABCD0003 );

  /*

   *  This code if if'ed 0 out because you can't mount another

   *  filesystem properly until the mount point it will be

   *  mounted onto is created.  Moreover, if it is going to

   *  use a device, then it is REALLY unfair to attempt this

   *  before device drivers are initialized.

   */

#if 0

  /*

   *  Now if there are other filesystems to mount, go for it.

   */

  for ( i=1 ; i < rtems_filesystem_mount_table_size ; i++ ) {

    mt = &rtems_filesystem_mount_table[0];

    status = mount(

       &entry, mt->fs_ops, mt->fsoptions, mt->device, mt->mount_point );

    if ( status == -1 )

      rtems_fatal_error_occurred( 0xABCD0003 );

  }

#endif

#endif

}