1*fdd8201dSApple OSS Distributions /* 2*fdd8201dSApple OSS Distributions * Copyright (c) 1999, 2000-2002 Apple Computer, Inc. All rights reserved. 3*fdd8201dSApple OSS Distributions * 4*fdd8201dSApple OSS Distributions * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ 5*fdd8201dSApple OSS Distributions * 6*fdd8201dSApple OSS Distributions * This file contains Original Code and/or Modifications of Original Code 7*fdd8201dSApple OSS Distributions * as defined in and that are subject to the Apple Public Source License 8*fdd8201dSApple OSS Distributions * Version 2.0 (the 'License'). You may not use this file except in 9*fdd8201dSApple OSS Distributions * compliance with the License. The rights granted to you under the License 10*fdd8201dSApple OSS Distributions * may not be used to create, or enable the creation or redistribution of, 11*fdd8201dSApple OSS Distributions * unlawful or unlicensed copies of an Apple operating system, or to 12*fdd8201dSApple OSS Distributions * circumvent, violate, or enable the circumvention or violation of, any 13*fdd8201dSApple OSS Distributions * terms of an Apple operating system software license agreement. 14*fdd8201dSApple OSS Distributions * 15*fdd8201dSApple OSS Distributions * Please obtain a copy of the License at 16*fdd8201dSApple OSS Distributions * http://www.opensource.apple.com/apsl/ and read it before using this file. 17*fdd8201dSApple OSS Distributions * 18*fdd8201dSApple OSS Distributions * The Original Code and all software distributed under the License are 19*fdd8201dSApple OSS Distributions * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER 20*fdd8201dSApple OSS Distributions * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, 21*fdd8201dSApple OSS Distributions * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, 22*fdd8201dSApple OSS Distributions * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. 23*fdd8201dSApple OSS Distributions * Please see the License for the specific language governing rights and 24*fdd8201dSApple OSS Distributions * limitations under the License. 25*fdd8201dSApple OSS Distributions * 26*fdd8201dSApple OSS Distributions * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ 27*fdd8201dSApple OSS Distributions */ 28*fdd8201dSApple OSS Distributions 29*fdd8201dSApple OSS Distributions #ifndef __VN_SHADOW_H__ 30*fdd8201dSApple OSS Distributions #define __VN_SHADOW_H__ 31*fdd8201dSApple OSS Distributions 32*fdd8201dSApple OSS Distributions #include <sys/appleapiopts.h> 33*fdd8201dSApple OSS Distributions 34*fdd8201dSApple OSS Distributions #ifdef __APPLE_API_PRIVATE 35*fdd8201dSApple OSS Distributions 36*fdd8201dSApple OSS Distributions typedef struct shadow_map shadow_map_t; 37*fdd8201dSApple OSS Distributions 38*fdd8201dSApple OSS Distributions boolean_t 39*fdd8201dSApple OSS Distributions shadow_map_read(shadow_map_t * map, off_t block_offset, size_t block_count, 40*fdd8201dSApple OSS Distributions off_t * incr_block_offset, size_t * incr_block_count); 41*fdd8201dSApple OSS Distributions boolean_t 42*fdd8201dSApple OSS Distributions shadow_map_write(shadow_map_t * map, off_t block_offset, size_t block_count, 43*fdd8201dSApple OSS Distributions off_t * incr_block_offset, size_t * incr_block_count); 44*fdd8201dSApple OSS Distributions boolean_t 45*fdd8201dSApple OSS Distributions shadow_map_is_written(shadow_map_t * map, off_t block_offset); 46*fdd8201dSApple OSS Distributions 47*fdd8201dSApple OSS Distributions uint32_t 48*fdd8201dSApple OSS Distributions shadow_map_shadow_size(shadow_map_t * map); 49*fdd8201dSApple OSS Distributions 50*fdd8201dSApple OSS Distributions shadow_map_t * 51*fdd8201dSApple OSS Distributions shadow_map_create(off_t file_size, off_t shadow_size, 52*fdd8201dSApple OSS Distributions uint32_t band_size, uint32_t block_size); 53*fdd8201dSApple OSS Distributions void 54*fdd8201dSApple OSS Distributions shadow_map_free(shadow_map_t * map); 55*fdd8201dSApple OSS Distributions 56*fdd8201dSApple OSS Distributions #endif /* __APPLE_API_PRIVATE */ 57*fdd8201dSApple OSS Distributions #endif /* __VN_SHADOW_H__ */ 58