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 2006 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27 /* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */ 28 /* All Rights Reserved */ 29 30 #ifndef _SYS_LOG_H 31 #define _SYS_LOG_H 32 33 #pragma ident "%Z%%M% %I% %E% SMI" 34 35 #include <sys/types.h> 36 #include <sys/strlog.h> 37 #include <sys/stream.h> 38 39 #ifdef __cplusplus 40 extern "C" { 41 #endif 42 43 #define LOG_CONSMIN 0 /* /dev/conslog minor */ 44 #define LOG_LOGMIN 5 /* /dev/log minor */ 45 #define LOG_BACKLOG LOG_LOGMIN /* console backlog queue */ 46 47 #define LOG_LOGMINIDX 0 /* index of smallest /dev/log clone */ 48 #define LOG_LOGMAXIDX 15 /* up to 16 /dev/log clones */ 49 #define LOG_NUMCLONES (LOG_LOGMAXIDX - LOG_LOGMINIDX + 1) 50 51 #define LOG_MID 44 /* module ID */ 52 #define LOG_MINPS 0 /* min packet size */ 53 #define LOG_MAXPS 1024 /* max packet size */ 54 #define LOG_LOWAT 2048 /* threshold for backenable */ 55 #define LOG_HIWAT 1048576 /* threshold for tossing messages */ 56 57 #define LOG_MAGIC 0xf00d4109U /* "food for log" - unsent msg magic */ 58 #define LOG_RECENTSIZE 8192 /* queue of most recent messages */ 59 #define LOG_MINFREE 4096 /* message cache low water mark */ 60 #define LOG_MAXFREE 8192 /* message cache high water mark */ 61 62 typedef struct log log_t; 63 typedef int (log_filter_t)(log_t *, log_ctl_t *); 64 65 struct log { 66 queue_t *log_q; /* message queue */ 67 log_filter_t *log_wanted; /* message filter */ 68 mblk_t *log_data; /* parameters for filter */ 69 uint16_t log_flags; /* message type (e.g. SL_CONSOLE) */ 70 short log_inuse; /* is this log device open? */ 71 int log_overflow; /* messages lost due to QFULL */ 72 zoneid_t log_zoneid; /* zone id of log */ 73 major_t log_major; /* device type */ 74 minor_t log_minor; /* minor number of associated device */ 75 }; 76 77 /* Array of /dev/log minor devices */ 78 typedef struct log_zone { 79 log_t lz_clones[LOG_NUMCLONES]; 80 uint16_t lz_active; /* active types (OR of all log_flags fields) */ 81 } log_zone_t; 82 83 #define LOG_MSGSIZE 200 84 85 typedef struct log_dump { 86 uint32_t ld_magic; /* LOG_MAGIC */ 87 uint32_t ld_msgsize; /* MBLKL(mp->b_cont) */ 88 uint32_t ld_csum; /* checksum32(log_ctl) */ 89 uint32_t ld_msum; /* checksum32(message text) */ 90 /* 91 * log_ctl and message text follow here -- see dump_messages() 92 */ 93 } log_dump_t; 94 95 #ifdef _KERNEL 96 97 /* global zone variables */ 98 extern log_zone_t log_global; 99 extern queue_t *log_consq; /* primary console reader queue */ 100 extern queue_t *log_backlogq; /* console backlog queue */ 101 extern queue_t *log_intrq; /* pending high-level interrupt message queue */ 102 103 extern log_filter_t log_error; 104 extern log_filter_t log_trace; 105 extern log_filter_t log_console; 106 107 extern void log_init(void); 108 extern void log_enter(void); 109 extern void log_exit(void); 110 extern void log_update(log_t *, queue_t *, short, log_filter_t); 111 extern mblk_t *log_makemsg(int, int, int, int, int, void *, size_t, int); 112 extern void log_freemsg(mblk_t *); 113 extern void log_sendmsg(mblk_t *, zoneid_t); 114 extern void log_flushq(queue_t *); 115 extern void log_printq(queue_t *); 116 extern log_t *log_alloc(minor_t); 117 extern void log_free(log_t *); 118 119 #endif /* _KERNEL */ 120 121 #ifdef __cplusplus 122 } 123 #endif 124 125 #endif /* _SYS_LOG_H */ 126