Print this page
13178 ::msgbuf could see more than 8KB of logs
Reviewed by: Andy Fiddaman <Andy@omniosce.org>
Reviewed by: Toomas Soome <tsoome@me.com>


  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 {




  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 {