/usr/include/dnsdb/journal-cjf-page-cache.h is in libyadifa-dev 2.3.7-1build1.
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*
* Copyright (c) 2011-2017, EURid. All rights reserved.
* The YADIFA TM software product is provided under the BSD 3-clause license:
*
* 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 EURid 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 HOLDER 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
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*------------------------------------------------------------------------------
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*/
#pragma once
#include <dnscore/sys_types.h>
#if !JOURNAL_CJF_BASE
#error "internal include for the CJF journal, don't use include it"
#endif
#ifdef __cplusplus
extern "C" {
#endif
#define CJF_SECTION_INDEX_SLOT_HEAD 16
#define CJF_SECTION_INDEX_SLOT_SIZE 8
#define CJF_SECTION_INDEX_SLOT_COUNT 510
#define CJF_SECTION_INDEX_SIZE (CJF_SECTION_INDEX_SLOT_HEAD + CJF_SECTION_INDEX_SLOT_SIZE * CJF_SECTION_INDEX_SLOT_COUNT) // 4KB
#define CJF_PAGE_SIZE_IN_BYTE (CJF_SECTION_INDEX_SLOT_HEAD + (CJF_SECTION_INDEX_SLOT_COUNT * CJF_SECTION_INDEX_SLOT_SIZE))
#define CJF_PAGE_ARBITRARY_UPDATE_SIZE 512
#define CJF_PAGE_MAGIC MAGIC4('P','A','G','E')
struct journal_cjf_page_tbl_header
{
u32 magic;
u32 next_page_offset;
u16 count;
u16 size;
u32 stream_end_offset;
u8 __end_of_struct__;
};
typedef struct journal_cjf_page_tbl_header journal_cjf_page_tbl_header;
#define JOURNAL_CJF_PAGE_HEADER_SIZE offsetof(journal_cjf_page_tbl_header,__end_of_struct__)
#define JCJFTI_TAG 0x4954464a434a
struct journal_cjf_page_tbl_item
{
u32 ends_with_serial; // the last SOA on the stream for this item has this serial
u32 stream_file_offset;
/// @note THIS MUST BE EXACTLY 8 BYTES LONG !
};
typedef struct journal_cjf_page_tbl_item journal_cjf_page_tbl_item;
#define JOURNAL_CJF_PAGE_ITEM_SIZE 8
void journal_cjf_page_cache_init();
void journal_cjf_page_cache_flush(int fd);
void journal_cjf_page_cache_close(int fd);
void journal_cjf_page_cache_write_item(int fd, u64 file_offset, s16 offset, const journal_cjf_page_tbl_item *value);
void journal_cjf_page_cache_read_item(int fd, u64 file_offset, s16 offset, journal_cjf_page_tbl_item *value);
void journal_cjf_page_cache_write_new_header(int fd, u64 file_offset);
void journal_cjf_page_cache_write_header(int fd, u64 file_offset, const journal_cjf_page_tbl_header *value);
void journal_cjf_page_cache_read_header(int fd, u64 file_offset, journal_cjf_page_tbl_header *value);
void journal_cjf_page_cache_flush_page(int fd, u64 file_offset);
void journal_cjf_page_cache_clear(int fd, u64 file_offset);
#ifdef __cplusplus
}
#endif
/** @} */
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