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