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diff --git a/unionfs/ulfs.h b/unionfs/ulfs.h
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-/* Hurd unionfs
- Copyright (C) 2001, 2002, 2005 Free Software Foundation, Inc.
- Written by Moritz Schulte <moritz@duesseldorf.ccc.de>.
-
- This program is free software; you can redistribute it and/or
- modify it under the terms of the GNU General Public License as
- published by the Free Software Foundation; either version 2 of the
- License, or * (at your option) any later version.
-
- This program is distributed in the hope that it will be useful, but
- WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
- USA. */
-
-/* Underlying filesystem management. */
-
-#ifndef INCLUDED_ULFS_H
-#define INCLUDED_ULFS_H
-
-/* The structure for each registered underlying filesystem. */
-typedef struct ulfs
-{
- char *path;
- int flags;
- int priority;
- struct ulfs *next, *prev;
-} ulfs_t;
-
-/* Flags. */
-
-/* The according ulfs is marked writable. */
-#define FLAG_ULFS_WRITABLE 0x00000001
-
-/* The start of the ulfs chain. */
-extern ulfs_t *ulfs_chain_start;
-
-/* The end of the ulfs chain, we need this, to go through the chain in
- reversed order. */
-extern ulfs_t *ulfs_chain_end;
-
-/* Number of registered underlying filesystems. */
-extern unsigned int ulfs_num;
-
-/* The lock protecting the ulfs data structures. */
-extern struct mutex ulfs_lock;
-
-/* Register a new underlying filesystem. */
-error_t ulfs_register (char *path, int flags, int priority);
-
-/* Unregister an underlying filesystem. */
-error_t ulfs_unregister (char *path);
-
-/* Get an ULFS element by it's index. */
-error_t ulfs_get_num (int num, ulfs_t **ulfs);
-
-/* Removes invalid ulfs entries. */
-void ulfs_check (void);
-
-#define ulfs_iterate \
- for (ulfs_t *ulfs = (mutex_lock (&ulfs_lock), \
- ulfs_chain_start); \
- ulfs || (mutex_unlock (&ulfs_lock), 0); \
- ulfs = ulfs->next)
-
-#define ulfs_iterate_unlocked \
- for (ulfs_t *ulfs = ulfs_chain_start; \
- ulfs; \
- ulfs = ulfs->next)
-
-#endif