/*
 * CDDL HEADER START
 *
 * The contents of this file are subject to the terms of the
 * Common Development and Distribution License (the "License").
 * You may not use this file except in compliance with the License.
 *
 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
 * or http://www.opensolaris.org/os/licensing.
 * See the License for the specific language governing permissions
 * and limitations under the License.
 *
 * When distributing Covered Code, include this CDDL HEADER in each
 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
 * If applicable, add the following below this CDDL HEADER, with the
 * fields enclosed by brackets "[]" replaced with your own identifying
 * information: Portions Copyright [yyyy] [name of copyright owner]
 *
 * CDDL HEADER END
 */
/*
 * Copyright (c) 2004, 2010, Oracle and/or its affiliates. All rights reserved.
 */

#ifndef _FMD_LOG_H
#define _FMD_LOG_H

#include <sys/types.h>
#include <sys/stat.h>
#include <pthread.h>
#include <exacct.h>

#ifdef  __cplusplus
extern "C" {
#endif

#include <fmd_api.h>

typedef struct fmd_log {
        char *log_name;                 /* file pathname */
        char *log_tag;                  /* file content tag */
        int log_fd;                     /* file descriptor */
        struct stat64 log_stat;         /* status of file at log_open() time */
        ea_file_t log_ea;               /* exacct file structure */
        pthread_mutex_t log_lock;       /* lock for flags, refs, off, append */
        pthread_cond_t log_cv;          /* condition variable for waiters */
        int log_flags;                  /* file flags (see below) */
        uint_t log_refs;                /* file reference count */
        uint_t log_pending;             /* number of pending log commits */
        off64_t log_toc;                /* offset of table of contents */
        off64_t log_beg;                /* offset of first data record */
        off64_t log_off;                /* offset at which to append */
        off64_t log_skip;               /* offset to skip to for replay */
        uint64_t log_minfree;           /* minimum free bytes for filesystem */
        char *log_uuid;                 /* uuid string for this log file */
        uint_t log_uuidlen;             /* length of log_uuid (not incl. \0) */
} fmd_log_t;

#define FMD_LF_EAOPEN   0x1             /* log_ea is open and valid */
#define FMD_LF_REPLAY   0x2             /* log records should use replay tag */
#define FMD_LF_DIRTY    0x4             /* log toc should be updated */
#define FMD_LF_BUSY     0x8             /* log is busy; skip updates */

typedef void fmd_log_f(fmd_log_t *, fmd_event_t *, void *);

#define FMD_LOG_ERROR   "error"         /* tag for error log files */
#define FMD_LOG_FAULT   "fault"         /* tag for fault log files */
#define FMD_LOG_ASRU    "asru"          /* tag for asru log files */
#define FMD_LOG_XPRT    "xprt"          /* tag for transport log files */
#define FMD_LOG_INFO    "info"          /* tag for info event log files */

extern fmd_log_t *fmd_log_tryopen(const char *, const char *, const char *);
extern fmd_log_t *fmd_log_open(const char *, const char *, const char *);
extern void fmd_log_close(fmd_log_t *);

extern void fmd_log_hold_pending(fmd_log_t *);
extern void fmd_log_hold(fmd_log_t *);
extern void fmd_log_rele(fmd_log_t *);

extern void fmd_log_append(fmd_log_t *, fmd_event_t *, fmd_case_t *);
extern void fmd_log_commit(fmd_log_t *, fmd_event_t *);
extern void fmd_log_decommit(fmd_log_t *, fmd_event_t *);
extern void fmd_log_replay(fmd_log_t *, fmd_log_f *, void *);
extern void fmd_log_update(fmd_log_t *);
extern fmd_log_t *fmd_log_rotate(fmd_log_t *);

#ifdef  __cplusplus
}
#endif

#endif  /* _FMD_LOG_H */