asl_store.h   [plain text]

#ifndef __ASL_STORE_H__
#define __ASL_STORE_H__

/*
 * Copyright (c) 2007-2008 Apple Inc.  All rights reserved.
 *
 * @APPLE_LICENSE_HEADER_START@
 * 
 * "Portions Copyright (c) 2007 Apple Inc.  All Rights
 * Reserved.  This file contains Original Code and/or Modifications of
 * Original Code as defined in and that are subject to the Apple Public
 * Source License Version 1.0 (the 'License').  You may not use this file
 * except in compliance with the License.  Please obtain a copy of the
 * License at http://www.apple.com/publicsource and read it before using
 * this file.
 * 
 * The Original Code and all software distributed under the License are
 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
 * License for the specific language governing rights and limitations
 * under the License."
 * 
 * @APPLE_LICENSE_HEADER_END@
 */

#include <stdio.h>
#include <stdint.h>
#include <sys/time.h>
#include <asl.h>
#include <asl_file.h>

#define PATH_ASL_STORE "/var/log/asl"
#define PATH_ASL_ARCHIVE "/var/log/asl.archive"
#define FILE_ASL_STORE_DATA "StoreData"
#define FILE_ASL_STORE_SWEEP_SEMAPHORE "SweepStore"

#define FILE_CACHE_SIZE 64
#define FILE_CACHE_TTL 300

typedef struct
{
	time_t ts;
	uid_t u;
	gid_t g;
	char *path;
	asl_file_t *f;
} asl_cached_file_t;

typedef struct
{
	char *base_dir;
	FILE *storedata;
	uint64_t next_id;
	asl_file_t *db;
	asl_cached_file_t file_cache[FILE_CACHE_SIZE];
	void *work;
	time_t start_today;
	time_t start_tomorrow;
	time_t last_write;
	size_t max_file_size;
} asl_store_t;

uint32_t asl_store_open_write(const char *basedir, asl_store_t **s);
uint32_t asl_store_open_read(const char *basedir, asl_store_t **s);
uint32_t asl_store_close(asl_store_t *s);
uint32_t asl_store_statistics(asl_store_t *s, aslmsg *msg);

uint32_t asl_store_save(asl_store_t *s, aslmsg msg);

uint32_t asl_store_match(asl_store_t *s, aslresponse query, aslresponse *res, uint64_t *last_id, uint64_t start_id, uint32_t count, int32_t direction);
uint32_t asl_store_match_timeout(asl_store_t *s, aslresponse query, aslresponse *res, uint64_t *last_id, uint64_t start_id, uint32_t count, int32_t direction, uint32_t usec);

uint32_t asl_store_match_start(asl_store_t *s, uint64_t start_id, int32_t direction);
uint32_t asl_store_match_next(asl_store_t *s, aslresponse query, aslresponse *res, uint32_t count);

uint32_t asl_store_max_file_size(asl_store_t *s, size_t max);
uint32_t asl_store_signal_sweep(asl_store_t *s);
uint32_t asl_store_sweep_file_cache(asl_store_t *s);

#endif __ASL_STORE_H__