示例#1
0
int
rtems_rfs_inode_unload (rtems_rfs_file_system*  fs,
                        rtems_rfs_inode_handle* handle,
                        bool                    update_ctime)
{
  int rc = 0;

  if (rtems_rfs_trace (RTEMS_RFS_TRACE_INODE_UNLOAD))
    printf ("rtems-rfs: inode-unload: ino=%" PRIu32 " loads=%i loaded=%s\n",
            handle->ino, handle->loads,
            rtems_rfs_inode_is_loaded (handle) ? "yes" : "no");

  if (rtems_rfs_inode_is_loaded (handle))
  {
    if (handle->loads == 0)
      return EIO;

    handle->loads--;

    if (handle->loads == 0)
    {
      /*
       * If the buffer is dirty it will be release. Also set the ctime.
       */
      if (rtems_rfs_buffer_dirty (&handle->buffer) && update_ctime)
        rtems_rfs_inode_set_ctime (handle, time (NULL));
      rc = rtems_rfs_buffer_handle_release (fs, &handle->buffer);
      handle->node = NULL;
    }
  }

  return rc;
}
int
rtems_rfs_file_close (rtems_rfs_file_system* fs,
                      rtems_rfs_file_handle* handle)
{
  int rrc;
  int rc;

  rrc = 0;
  
  if (rtems_rfs_trace (RTEMS_RFS_TRACE_FILE_CLOSE))
    printf ("rtems-rfs: file-close: entry: ino=%" PRId32 "\n",
            handle->shared->inode.ino);

  if (handle->shared->references > 0)
    handle->shared->references--;

  if (handle->shared->references == 0)
  {
    if (!rtems_rfs_inode_is_loaded (&handle->shared->inode))
      rrc = rtems_rfs_inode_load (fs, &handle->shared->inode);

    if (rrc == 0)
    {
      /*
       * @todo This could be clever and only update if different.
       */
      rtems_rfs_inode_set_atime (&handle->shared->inode,
                                 handle->shared->atime);
      rtems_rfs_inode_set_mtime (&handle->shared->inode,
                                 handle->shared->mtime);
      rtems_rfs_inode_set_ctime (&handle->shared->inode,
                                 handle->shared->ctime);
      if (!rtems_rfs_block_size_equal (&handle->shared->size,
                                       &handle->shared->map.size))
        rtems_rfs_block_map_set_size (&handle->shared->map,
                                      &handle->shared->size);
    }
    
    rc = rtems_rfs_block_map_close (fs, &handle->shared->map);
    if (rc > 0)
    {
      if (rtems_rfs_trace (RTEMS_RFS_TRACE_FILE_CLOSE))
        printf ("rtems-rfs: file-close: map close error: ino=%" PRId32 ": %d: %s\n",
                handle->shared->inode.ino, rc, strerror (rc));
      if (rrc == 0)
        rrc = rc;
    }
    
    rc = rtems_rfs_inode_close (fs, &handle->shared->inode);
    if (rc > 0)
    {
      if (rtems_rfs_trace (RTEMS_RFS_TRACE_FILE_CLOSE))
        printf ("rtems-rfs: file-close: inode close error: ino=%" PRId32 ": %d: %s\n",
                handle->shared->inode.ino, rc, strerror (rc));
      if (rrc == 0)
        rrc = rc;
    }
    
    rtems_chain_extract (&handle->shared->link);
    free (handle->shared);
  }

  rc = rtems_rfs_buffer_handle_close (fs, &handle->buffer);
  if ((rrc == 0) && (rc > 0))
    rrc = rc;
  
  if (rrc > 0)
  {
    if (rtems_rfs_trace (RTEMS_RFS_TRACE_FILE_CLOSE))
      printf ("rtems-rfs: file-close: result: %d: %s\n", rrc, strerror (rrc));
  }

  free (handle);
  
  return rrc;
}