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      1 /*
      2  * CDDL HEADER START
      3  *
      4  * The contents of this file are subject to the terms of the
      5  * Common Development and Distribution License, Version 1.0 only
      6  * (the "License").  You may not use this file except in compliance
      7  * with the License.
      8  *
      9  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
     10  * or http://www.opensolaris.org/os/licensing.
     11  * See the License for the specific language governing permissions
     12  * and limitations under the License.
     13  *
     14  * When distributing Covered Code, include this CDDL HEADER in each
     15  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
     16  * If applicable, add the following below this CDDL HEADER, with the
     17  * fields enclosed by brackets "[]" replaced with your own identifying
     18  * information: Portions Copyright [yyyy] [name of copyright owner]
     19  *
     20  * CDDL HEADER END
     21  */
     22 /*
     23  * Copyright 2005 Sun Microsystems, Inc.  All rights reserved.
     24  * Use is subject to license terms.
     25  */
     26 
     27 #ifndef	_FMD_LOG_H
     28 #define	_FMD_LOG_H
     29 
     30 #pragma ident	"%Z%%M%	%I%	%E% SMI"
     31 
     32 #include <sys/types.h>
     33 #include <sys/stat.h>
     34 #include <pthread.h>
     35 #include <exacct.h>
     36 
     37 #ifdef	__cplusplus
     38 extern "C" {
     39 #endif
     40 
     41 #include <fmd_api.h>
     42 
     43 typedef struct fmd_log {
     44 	char *log_name;			/* file pathname */
     45 	char *log_tag;			/* file content tag */
     46 	int log_fd;			/* file descriptor */
     47 	struct stat64 log_stat;		/* status of file at log_open() time */
     48 	ea_file_t log_ea;		/* exacct file structure */
     49 	pthread_mutex_t log_lock;	/* lock for flags, refs, off, append */
     50 	pthread_cond_t log_cv;		/* condition variable for waiters */
     51 	int log_flags;			/* file flags (see below) */
     52 	uint_t log_refs;		/* file reference count */
     53 	uint_t log_pending;		/* number of pending log commits */
     54 	off64_t log_toc;		/* offset of table of contents */
     55 	off64_t log_beg;		/* offset of first data record */
     56 	off64_t log_off;		/* offset at which to append */
     57 	off64_t log_skip;		/* offset to skip to for replay */
     58 	uint64_t log_minfree;		/* minimum free bytes for filesystem */
     59 	char *log_uuid;			/* uuid string for this log file */
     60 	uint_t log_uuidlen;		/* length of log_uuid (not incl. \0) */
     61 } fmd_log_t;
     62 
     63 #define	FMD_LF_EAOPEN	0x1		/* log_ea is open and valid */
     64 #define	FMD_LF_REPLAY	0x2		/* log records should use replay tag */
     65 #define	FMD_LF_DIRTY	0x4		/* log toc should be updated */
     66 #define	FMD_LF_BUSY	0x8		/* log is busy; skip updates */
     67 
     68 typedef void fmd_log_f(fmd_log_t *, fmd_event_t *, void *);
     69 
     70 #define	FMD_LOG_ERROR	"error"		/* tag for error log files */
     71 #define	FMD_LOG_FAULT	"fault"		/* tag for fault log files */
     72 #define	FMD_LOG_ASRU	"asru"		/* tag for asru log files */
     73 #define	FMD_LOG_XPRT	"xprt"		/* tag for transport log files */
     74 
     75 extern fmd_log_t *fmd_log_tryopen(const char *, const char *, const char *);
     76 extern fmd_log_t *fmd_log_open(const char *, const char *, const char *);
     77 extern void fmd_log_close(fmd_log_t *);
     78 
     79 extern void fmd_log_hold_pending(fmd_log_t *);
     80 extern void fmd_log_hold(fmd_log_t *);
     81 extern void fmd_log_rele(fmd_log_t *);
     82 
     83 extern void fmd_log_append(fmd_log_t *, fmd_event_t *, fmd_case_t *);
     84 extern void fmd_log_commit(fmd_log_t *, fmd_event_t *);
     85 extern void fmd_log_decommit(fmd_log_t *, fmd_event_t *);
     86 extern void fmd_log_replay(fmd_log_t *, fmd_log_f *, void *);
     87 extern void fmd_log_update(fmd_log_t *);
     88 extern fmd_log_t *fmd_log_rotate(fmd_log_t *);
     89 
     90 #ifdef	__cplusplus
     91 }
     92 #endif
     93 
     94 #endif	/* _FMD_LOG_H */
     95