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 #include <sys/types.h> 34 #include <sys/strlog.h> 35 #include <sys/stream.h> 36 37 #ifdef __cplusplus 38 extern "C" { 39 #endif 40 41 #define LOG_CONSMIN 0 /* /dev/conslog minor */ 42 #define LOG_LOGMIN 5 /* /dev/log minor */ 43 #define LOG_BACKLOG LOG_LOGMIN /* console backlog queue */ 44 45 #define LOG_LOGMINIDX 0 /* index of smallest /dev/log clone */ 46 #define LOG_LOGMAXIDX 15 /* up to 16 /dev/log clones */ 47 #define LOG_NUMCLONES (LOG_LOGMAXIDX - LOG_LOGMINIDX + 1) 48 49 #define LOG_MID 44 /* module ID */ 50 #define LOG_MINPS 0 /* min packet size */ 51 #define LOG_MAXPS 1024 /* max packet size */ 52 #define LOG_LOWAT 2048 /* threshold for backenable */ 53 #define LOG_HIWAT 1048576 /* threshold for tossing messages */ 54 55 #define LOG_MAGIC 0xf00d4109U /* "food for log" - unsent msg magic */ 56 #define LOG_RECENTSIZE 65536 /* queue of most recent messages */ 57 #define LOG_MINFREE 4096 /* message cache low water mark */ 58 #define LOG_MAXFREE 8192 /* message cache high water mark */ 59 60 typedef struct log log_t; 61 typedef int (log_filter_t)(log_t *, log_ctl_t *); 62 63 struct log { 64 queue_t *log_q; /* message queue */ 65 log_filter_t *log_wanted; /* message filter */ 66 mblk_t *log_data; /* parameters for filter */ 67 uint16_t log_flags; /* message type (e.g. SL_CONSOLE) */ 68 short log_inuse; /* is this log device open? */ 69 int log_overflow; /* messages lost due to QFULL */ 70 zoneid_t log_zoneid; /* zone id of log */ 71 major_t log_major; /* device type */ 72 minor_t log_minor; /* minor number of associated device */ 73 }; 74 75 /* Array of /dev/log minor devices */ 76 typedef struct log_zone { 77 log_t lz_clones[LOG_NUMCLONES]; 78 uint16_t lz_active; /* active types (OR of all log_flags fields) */ 79 } log_zone_t; 80 81 #define LOG_MSGSIZE 200 82 83 typedef struct log_dump { 84 uint32_t ld_magic; /* LOG_MAGIC */ 85 uint32_t ld_msgsize; /* MBLKL(mp->b_cont) */ 86 uint32_t ld_csum; /* checksum32(log_ctl) */ 87 uint32_t ld_msum; /* checksum32(message text) */ 88 /* 89 * log_ctl and message text follow here -- see dump_messages() 90 */ 91 } log_dump_t; 92 93 #ifdef _KERNEL 94 95 /* global zone variables */ 96 extern log_zone_t log_global; 97 extern queue_t *log_consq; /* primary console reader queue */ 98 extern queue_t *log_backlogq; /* console backlog queue */ 99 extern queue_t *log_intrq; /* pending high-level interrupt message queue */ 100 101 extern log_filter_t log_error; 102 extern log_filter_t log_trace; 103 extern log_filter_t log_console; 104 105 extern void log_init(void); 106 extern void log_enter(void); 107 extern void log_exit(void); 108 extern void log_update(log_t *, queue_t *, short, log_filter_t); 109 extern mblk_t *log_makemsg(int, int, int, int, int, void *, size_t, int); 110 extern void log_freemsg(mblk_t *); 111 extern void log_sendmsg(mblk_t *, zoneid_t); 112 extern void log_flushq(queue_t *); 113 extern void log_printq(queue_t *); 114 extern log_t *log_alloc(minor_t); 115 extern void log_free(log_t *); 116 117 #endif /* _KERNEL */ 118 119 #ifdef __cplusplus 120 } 121 #endif 122 123 #endif /* _SYS_LOG_H */ 124