1204076Spjd/*- 2204076Spjd * Copyright (c) 2009-2010 The FreeBSD Foundation 3204076Spjd * All rights reserved. 4204076Spjd * 5204076Spjd * This software was developed by Pawel Jakub Dawidek under sponsorship from 6204076Spjd * the FreeBSD Foundation. 7204076Spjd * 8204076Spjd * Redistribution and use in source and binary forms, with or without 9204076Spjd * modification, are permitted provided that the following conditions 10204076Spjd * are met: 11204076Spjd * 1. Redistributions of source code must retain the above copyright 12204076Spjd * notice, this list of conditions and the following disclaimer. 13204076Spjd * 2. Redistributions in binary form must reproduce the above copyright 14204076Spjd * notice, this list of conditions and the following disclaimer in the 15204076Spjd * documentation and/or other materials provided with the distribution. 16204076Spjd * 17204076Spjd * THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND 18204076Spjd * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19204076Spjd * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20204076Spjd * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE 21204076Spjd * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22204076Spjd * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23204076Spjd * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24204076Spjd * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25204076Spjd * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26204076Spjd * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27204076Spjd * SUCH DAMAGE. 28204076Spjd * 29204076Spjd * $FreeBSD$ 30204076Spjd */ 31204076Spjd 32204076Spjd#ifndef _ACTIVEMAP_H_ 33204076Spjd#define _ACTIVEMAP_H_ 34204076Spjd 35204076Spjd#include <stdbool.h> 36204076Spjd#include <stdint.h> 37204076Spjd 38204076Spjdstruct activemap; 39204076Spjd 40204076Spjdint activemap_init(struct activemap **ampp, uint64_t mediasize, 41204076Spjd uint32_t extentsize, uint32_t sectorsize, uint32_t keepdirty); 42204076Spjdvoid activemap_free(struct activemap *amp); 43204076Spjd 44204076Spjdbool activemap_write_start(struct activemap *amp, off_t offset, off_t length); 45204076Spjdbool activemap_write_complete(struct activemap *amp, off_t offset, 46204076Spjd off_t length); 47204076Spjdbool activemap_extent_complete(struct activemap *amp, int extent); 48204076Spjduint64_t activemap_ndirty(const struct activemap *amp); 49204076Spjd 50204076Spjdbool activemap_differ(const struct activemap *amp); 51204076Spjdsize_t activemap_size(const struct activemap *amp); 52204076Spjdsize_t activemap_ondisk_size(const struct activemap *amp); 53204076Spjdvoid activemap_copyin(struct activemap *amp, const unsigned char *buf, 54204076Spjd size_t size); 55204076Spjdvoid activemap_merge(struct activemap *amp, const unsigned char *buf, 56204076Spjd size_t size); 57204076Spjdconst unsigned char *activemap_bitmap(struct activemap *amp, size_t *sizep); 58204076Spjd 59204076Spjdsize_t activemap_calc_ondisk_size(uint64_t mediasize, uint32_t extentsize, 60204076Spjd uint32_t sectorsize); 61204076Spjd 62204076Spjdvoid activemap_sync_rewind(struct activemap *amp); 63204076Spjdoff_t activemap_sync_offset(struct activemap *amp, off_t *lengthp, 64204076Spjd int *syncextp); 65204076Spjdbool activemap_need_sync(struct activemap *amp, off_t offset, off_t length); 66204076Spjd 67204076Spjdvoid activemap_dump(const struct activemap *amp); 68204076Spjd 69204076Spjd#endif /* !_ACTIVEMAP_H_ */ 70