/*
 * ip tunnel/ethertap device for MacOSX.
 *
 * Some utilities and misc stuff.
 */
/*
 * Copyright (c) 2004, 2005, 2006 Mattias Nissler <mattias.nissler@gmx.de>
 *
 * Redistribution and use in source and binary forms, with or without modification, are permitted
 * provided that the following conditions are met:
 *
 *   1. Redistributions of source code must retain the above copyright notice, this list of
 *      conditions and the following disclaimer.
 *   2. Redistributions in binary form must reproduce the above copyright notice, this list of
 *      conditions and the following disclaimer in the documentation and/or other materials provided
 *      with the distribution.
 *   3. The name of the author may not be used to endorse or promote products derived from this
 *      software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
 * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
 * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
 * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#ifndef __UTIL_H__
#define __UTIL_H__

extern "C" {

#include <mach/vm_types.h>

/* Why is there no stable public memory allocation API declared in the Kernel.framework headers?
 * For now, get kalloc (this is from XNU/osfmk/kern/kalloc.h)
 */
extern void *kalloc(vm_size_t size);
extern void kfree(void *data, vm_size_t size);

/* In Darwin 8 (OS X Tiger) there is a problem with struct selinfo. It was made `private' to the
 * kernel, so its definition is not available from the headers in Kernel.framework. However, we need
 * to declare something :-(
 */
struct selinfo {
	char data[64];	/* should be enough... */
};

/* Declare delay(), the kernel headers don't have it?!? */
void delay(int usec);

} /* extern "C" */

#endif /* __UTIL_H__ */