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/* Copyright (c) 2008, XenSource Inc.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * 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.
* * Neither the name of XenSource Inc. nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 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 COPYRIGHT OWNER
* 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.
*/
#ifndef _VHD_JOURNAL_H_
#define _VHD_JOURNAL_H_
#include <inttypes.h>
#include "libvhd.h"
#define VHD_JOURNAL_METADATA 0x01
#define VHD_JOURNAL_DATA 0x02
#define VHD_JOURNAL_HEADER_COOKIE "vjournal"
#define VHD_JOURNAL_ENTRY_COOKIE 0xaaaa12344321aaaa
typedef struct vhd_journal_header {
char cookie[8];
blk_uuid_t uuid;
uint64_t vhd_footer_offset;
uint32_t journal_data_entries;
uint32_t journal_metadata_entries;
uint64_t journal_data_offset;
uint64_t journal_metadata_offset;
uint64_t journal_eof;
char pad[448];
} vhd_journal_header_t;
typedef struct vhd_journal {
char *jname;
int jfd;
int is_block; /* is jfd a block device */
vhd_journal_header_t header;
vhd_context_t vhd;
} vhd_journal_t;
int vhd_journal_create(vhd_journal_t *, const char *file, const char *jfile);
int vhd_journal_open(vhd_journal_t *, const char *file, const char *jfile);
int vhd_journal_add_block(vhd_journal_t *, uint32_t block, char mode);
int vhd_journal_commit(vhd_journal_t *);
int vhd_journal_revert(vhd_journal_t *);
int vhd_journal_close(vhd_journal_t *);
int vhd_journal_remove(vhd_journal_t *);
#endif
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