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 (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 /* 22 * Copyright 2007 Sun Microsystems, Inc. All rights reserved. 23 * Use is subject to license terms. 24 */ 25 26 /* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */ 27 /* All Rights Reserved */ 28 29 #ifndef _SYS_LOG_H 30 #define _SYS_LOG_H 31 32 #pragma ident "%Z%%M% %I% %E% SMI" 33 34 #include <sys/types.h> 35 #include <sys/strlog.h> 36 #include <sys/stream.h> 37 38 #ifdef __cplusplus 39 extern "C" { 40 #endif 41 42 #define LOG_CONSMIN 0 /* /dev/conslog minor */ 43 #define LOG_LOGMIN 5 /* /dev/log minor */ 44 #define LOG_BACKLOG LOG_LOGMIN /* console backlog queue */ 45 46 #define LOG_LOGMINIDX 0 /* index of smallest /dev/log clone */ 47 #define LOG_LOGMAXIDX 15 /* up to 16 /dev/log clones */ 48 #define LOG_NUMCLONES (LOG_LOGMAXIDX - LOG_LOGMINIDX + 1) 49 50 #define LOG_MID 44 /* module ID */ 51 #define LOG_MINPS 0 /* min packet size */ 52 #define LOG_MAXPS 1024 /* max packet size */ 53 #define LOG_LOWAT 2048 /* threshold for backenable */ 54 #define LOG_HIWAT 1048576 /* threshold for tossing messages */ 55 56 #define LOG_MAGIC 0xf00d4109U /* "food for log" - unsent msg magic */ 57 #define LOG_RECENTSIZE 8192 /* queue of most recent messages */ 58 #define LOG_MINFREE 4096 /* message cache low water mark */ 59 #define LOG_MAXFREE 8192 /* message cache high water mark */ 60 61 typedef struct log log_t; 62 typedef int (log_filter_t)(log_t *, log_ctl_t *); 63 64 struct log { 65 queue_t *log_q; /* message queue */ 66 log_filter_t *log_wanted; /* message filter */ 67 mblk_t *log_data; /* parameters for filter */ 68 uint16_t log_flags; /* message type (e.g. SL_CONSOLE) */ 69 short log_inuse; /* is this log device open? */ 70 int log_overflow; /* messages lost due to QFULL */ 71 zoneid_t log_zoneid; /* zone id of log */ 72 major_t log_major; /* device type */ 73 minor_t log_minor; /* minor number of associated device */ 74 }; 75 76 /* Array of /dev/log minor devices */ 77 typedef struct log_zone { 78 log_t lz_clones[LOG_NUMCLONES]; 79 uint16_t lz_active; /* active types (OR of all log_flags fields) */ 80 } log_zone_t; 81 82 #define LOG_MSGSIZE 200 83 84 typedef struct log_dump { 85 uint32_t ld_magic; /* LOG_MAGIC */ 86 uint32_t ld_msgsize; /* MBLKL(mp->b_cont) */ 87 uint32_t ld_csum; /* checksum32(log_ctl) */ 88 uint32_t ld_msum; /* checksum32(message text) */ 89 /* 90 * log_ctl and message text follow here -- see dump_messages() 91 */ 92 } log_dump_t; 93 94 #ifdef _KERNEL 95 96 /* global zone variables */ 97 extern log_zone_t log_global; 98 extern queue_t *log_consq; /* primary console reader queue */ 99 extern queue_t *log_backlogq; /* console backlog queue */ 100 extern queue_t *log_intrq; /* pending high-level interrupt message queue */ 101 102 extern log_filter_t log_error; 103 extern log_filter_t log_trace; 104 extern log_filter_t log_console; 105 106 extern void log_init(void); 107 extern void log_enter(void); 108 extern void log_exit(void); 109 extern void log_update(log_t *, queue_t *, short, log_filter_t); 110 extern mblk_t *log_makemsg(int, int, int, int, int, void *, size_t, int); 111 extern void log_freemsg(mblk_t *); 112 extern void log_sendmsg(mblk_t *, zoneid_t); 113 extern void log_flushq(queue_t *); 114 extern void log_printq(queue_t *); 115 extern log_t *log_alloc(minor_t); 116 extern void log_free(log_t *); 117 extern void log_flushall(); 118 119 #endif /* _KERNEL */ 120 121 #ifdef __cplusplus 122 } 123 #endif 124 125 #endif /* _SYS_LOG_H */ 126