grub_ext2_iterate_dir (grub_fshelp_node_t dir,
		       grub_fshelp_iterate_dir_hook_t hook, void *hook_data)
{
  unsigned int fpos = 0;
  struct grub_fshelp_node *diro = (struct grub_fshelp_node *) dir;

  if (! diro->inode_read)
    {
      grub_ext2_read_inode (diro->data, diro->ino, &diro->inode);
      if (grub_errno)
	return 0;
    }

  /* Search the file.  */
  while (fpos < grub_le_to_cpu32 (diro->inode.size))
    {
      struct ext2_dirent dirent;

      grub_ext2_read_file (diro, 0, 0, fpos, sizeof (struct ext2_dirent),
			   (char *) &dirent);
      if (grub_errno)
	return 0;

      if (dirent.direntlen == 0)
        return 0;

      if (dirent.inode != 0 && dirent.namelen != 0)
	{
	  char filename[MAX_NAMELEN + 1];
	  struct grub_fshelp_node *fdiro;
	  enum grub_fshelp_filetype type = GRUB_FSHELP_UNKNOWN;

	  grub_ext2_read_file (diro, 0, 0, fpos + sizeof (struct ext2_dirent),
			       dirent.namelen, filename);
	  if (grub_errno)
	    return 0;

	  fdiro = grub_malloc (sizeof (struct grub_fshelp_node));
	  if (! fdiro)
	    return 0;

	  fdiro->data = diro->data;
	  fdiro->ino = grub_le_to_cpu32 (dirent.inode);

	  filename[dirent.namelen] = '\0';

	  if (dirent.filetype != FILETYPE_UNKNOWN)
	    {
	      fdiro->inode_read = 0;

	      if (dirent.filetype == FILETYPE_DIRECTORY)
		type = GRUB_FSHELP_DIR;
	      else if (dirent.filetype == FILETYPE_SYMLINK)
		type = GRUB_FSHELP_SYMLINK;
	      else if (dirent.filetype == FILETYPE_REG)
		type = GRUB_FSHELP_REG;
	    }
	  else
	    {
	      /* The filetype can not be read from the dirent, read
		 the inode to get more information.  */
	      grub_ext2_read_inode (diro->data,
                                    grub_le_to_cpu32 (dirent.inode),
				    &fdiro->inode);
	      if (grub_errno)
		{
		  grub_free (fdiro);
		  return 0;
		}

	      fdiro->inode_read = 1;

	      if ((grub_le_to_cpu16 (fdiro->inode.mode)
		   & FILETYPE_INO_MASK) == FILETYPE_INO_DIRECTORY)
		type = GRUB_FSHELP_DIR;
	      else if ((grub_le_to_cpu16 (fdiro->inode.mode)
			& FILETYPE_INO_MASK) == FILETYPE_INO_SYMLINK)
		type = GRUB_FSHELP_SYMLINK;
	      else if ((grub_le_to_cpu16 (fdiro->inode.mode)
			& FILETYPE_INO_MASK) == FILETYPE_INO_REG)
		type = GRUB_FSHELP_REG;
	    }

	  if (hook (filename, type, fdiro, hook_data))
	    return 1;
	}

      fpos += grub_le_to_cpu16 (dirent.direntlen);
    }

  return 0;
}
Unknown