xnu-7195.101.1.tar.gz

[apple/xnu.git] / osfmk / mach / vm_inherit.h

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/*
 * Mach Operating System
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/*
 */
/*
 *	File:	mach/vm_inherit.h
 *	Author:	Avadis Tevanian, Jr., Michael Wayne Young
 *
 *	Virtual memory map inheritance definitions.
 *
 */

#ifndef _MACH_VM_INHERIT_H_
#define _MACH_VM_INHERIT_H_

/*
 *	Types defined:
 *
 *	vm_inherit_t	inheritance codes.
 */

typedef unsigned int            vm_inherit_t;   /* might want to change this */

/*
 *	Enumeration of valid values for vm_inherit_t.
 */

#define VM_INHERIT_SHARE        ((vm_inherit_t) 0)      /* share with child */
#define VM_INHERIT_COPY         ((vm_inherit_t) 1)      /* copy into child */
#define VM_INHERIT_NONE         ((vm_inherit_t) 2)      /* absent from child */
#define VM_INHERIT_DONATE_COPY  ((vm_inherit_t) 3)      /* copy and delete */

#define VM_INHERIT_DEFAULT      VM_INHERIT_COPY
#define VM_INHERIT_LAST_VALID VM_INHERIT_NONE

#endif  /* _MACH_VM_INHERIT_H_ */