/* * Copyright (c) 2015 Apple Inc. All rights reserved. * * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ * * This file contains Original Code and/or Modifications of Original Code * as defined in and that are subject to the Apple Public Source License * Version 2.0 (the 'License'). You may not use this file except in * compliance with the License. The rights granted to you under the License * may not be used to create, or enable the creation or redistribution of, * unlawful or unlicensed copies of an Apple operating system, or to * circumvent, violate, or enable the circumvention or violation of, any * terms of an Apple operating system software license agreement. * * Please obtain a copy of the License at * http://www.opensource.apple.com/apsl/ and read it before using this file. * * The Original Code and all software distributed under the License are * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. * Please see the License for the specific language governing rights and * limitations under the License. * * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ */ #ifndef _SYS_MEMORY_MAINTENANCE_H_ #define _SYS_MEMORY_MAINTENANCE_H_ /* * File: sys/memory_maintenance.h * Author: Samuel Gosselin [sgosselin@apple.com] * * Header file for Memory Maintenance support. */ /* * The kern.darkboot sysctl can be controlled from kexts or userspace. If * processes want to change the sysctl value, they require the * 'com.apple.private.kernel.darkboot' entitlement. * * Operating the kern.darkboot sysctl is done via using the commands below: * * - MEMORY_MAINTENANCE_DARK_BOOT_UNSET * Unset the kern.darkboot sysctl (kern.sysctl=0). * - MEMORY_MAINTENANCE_DARK_BOOT_SET * Set the kern.darkboot sysctl (kern.sysctl=1). * - MEMORY_MAINTENANCE_DARK_BOOT_SET_PERSISTENT * Set the kern.darkboot sysctl (kern.sysctl=1) and save its * value into the 'darkboot' NVRAM variable. * * Example: * sysctl kern.darkboot=2 */ #define MEMORY_MAINTENANCE_DARK_BOOT_UNSET (0) #define MEMORY_MAINTENANCE_DARK_BOOT_SET (1) #define MEMORY_MAINTENANCE_DARK_BOOT_SET_PERSISTENT (2) #define MEMORY_MAINTENANCE_DARK_BOOT_NVRAM_NAME "darkboot" #endif /* _SYS_MEMORY_MAINTENANCE_H_ */