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/*-
* Copyright (c) 2009-2010 The FreeBSD Foundation
* All rights reserved.
*
* This software was developed by Pawel Jakub Dawidek under sponsorship from
* the FreeBSD Foundation.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $FreeBSD$
*/
#ifndef _ACTIVEMAP_H_
#define _ACTIVEMAP_H_
#include <stdbool.h>
#include <stdint.h>
struct activemap;
int activemap_init(struct activemap **ampp, uint64_t mediasize,
uint32_t extentsize, uint32_t sectorsize, uint32_t keepdirty);
void activemap_free(struct activemap *amp);
bool activemap_write_start(struct activemap *amp, off_t offset, off_t length);
bool activemap_write_complete(struct activemap *amp, off_t offset,
off_t length);
bool activemap_extent_complete(struct activemap *amp, int extent);
uint64_t activemap_ndirty(const struct activemap *amp);
bool activemap_differ(const struct activemap *amp);
size_t activemap_size(const struct activemap *amp);
size_t activemap_ondisk_size(const struct activemap *amp);
void activemap_copyin(struct activemap *amp, const unsigned char *buf,
size_t size);
void activemap_merge(struct activemap *amp, const unsigned char *buf,
size_t size);
const unsigned char *activemap_bitmap(struct activemap *amp, size_t *sizep);
size_t activemap_calc_ondisk_size(uint64_t mediasize, uint32_t extentsize,
uint32_t sectorsize);
void activemap_sync_rewind(struct activemap *amp);
off_t activemap_sync_offset(struct activemap *amp, off_t *lengthp,
int *syncextp);
bool activemap_need_sync(struct activemap *amp, off_t offset, off_t length);
void activemap_dump(const struct activemap *amp);
#endif /* !_ACTIVEMAP_H_ */
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