src_fd            742 lib/vfs/vfs.c      void *src_fd = NULL;
src_fd            758 lib/vfs/vfs.c      src_class = vfs_class_find_by_handle (src_vfs_fd, &src_fd);
src_fd            764 lib/vfs/vfs.c      if (src_fd == NULL)
src_fd            770 lib/vfs/vfs.c      return ioctl (*(int *) dest_fd, FICLONE, *(int *) src_fd);