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annotate usr/src/uts/common/sys/dumphdr.h @ 12979:ab9ae749152f

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PSARC/2009/617 Software Events Notification Parameters CLI PSARC/2009/618 snmp-notify: SNMP Notification Daemon for Software Events PSARC/2009/619 smtp-notify: Email Notification Daemon for Software Events PSARC/2010/225 fmd for non-global Solaris zones PSARC/2010/226 Solaris Instance UUID PSARC/2010/227 nvlist_nvflag(3NVPAIR) PSARC/2010/228 libfmevent additions PSARC/2010/257 sysevent_evc_setpropnvl and sysevent_evc_getpropnvl PSARC/2010/265 FMRI and FMA Event Stabilty, 'ireport' category 1 event class, and the 'sw' FMRI scheme PSARC/2010/278 FMA/SMF integration: instance state transitions PSARC/2010/279 Modelling panics within FMA PSARC/2010/290 logadm.conf upgrade 6392476 fmdump needs to pretty-print 6393375 userland ereport/ireport event generation interfaces 6445732 Add email notification agent for FMA and software events 6804168 RFE: Allow an efficient means to monitor SMF services status changes 6866661 scf_values_destroy(3SCF) will segfault if is passed NULL 6884709 Add snmp notification agent for FMA and software events 6884712 Add private interface to tap into libfmd_msg macro expansion capabilities 6897919 fmd to run in a non-global zone 6897937 fmd use of non-private doors is not safe 6900081 add a UUID to Solaris kernel image for use in crashdump identification 6914884 model panic events as a defect diagnosis in FMA 6944862 fmd_case_open_uuid, fmd_case_uuisresolved, fmd_nvl_create_defect 6944866 log legacy sysevents in fmd 6944867 enumerate svc scheme in topo 6944868 software-diagnosis and software-response fmd modules 6944870 model SMF maintenance state as a defect diagnosis in FMA 6944876 savecore runs in foreground for systems with zfs root and dedicated dump 6965796 Implement notification parameters for SMF state transitions and FMA events 6968287 SUN-FM-MIB.mib needs to be updated to reflect Oracle information 6972331 logadm.conf upgrade PSARC/2010/290
author Gavin Maltby <gavin.maltby@oracle.com>
date Fri, 30 Jul 2010 17:04:17 +1000
parents 2acab560865a
children dd10606460cc
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1 /*
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2 * CDDL HEADER START
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3 *
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4 * The contents of this file are subject to the terms of the
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5 * Common Development and Distribution License (the "License").
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6 * You may not use this file except in compliance with the License.
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7 *
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8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
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9 * or http://www.opensolaris.org/os/licensing.
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10 * See the License for the specific language governing permissions
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11 * and limitations under the License.
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12 *
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13 * When distributing Covered Code, include this CDDL HEADER in each
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14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
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15 * If applicable, add the following below this CDDL HEADER, with the
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16 * fields enclosed by brackets "[]" replaced with your own identifying
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17 * information: Portions Copyright [yyyy] [name of copyright owner]
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18 *
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19 * CDDL HEADER END
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20 */
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21 /*
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22 * Copyright (c) 1998, 2010, Oracle and/or its affiliates. All rights reserved.
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23 */
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24
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25 #ifndef _SYS_DUMPHDR_H
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26 #define _SYS_DUMPHDR_H
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27
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28 #include <sys/types.h>
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29 #include <sys/param.h>
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30 #include <sys/utsname.h>
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31 #include <sys/log.h>
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32
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33 #ifdef __cplusplus
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34 extern "C" {
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35 #endif
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36
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37 /*
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38 * The dump header describes the contents of a crash dump. Two headers
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39 * are written out: one at the beginning of the dump, and the other at
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40 * the very end of the dump device. The terminal header is at a known
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41 * location (end of device) so we can always find it. The initial header
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42 * is redundant, but helps savecore(1M) determine whether the dump has been
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43 * overwritten by swap activity. See dumpadm(1M) for dump configuration.
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44 */
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45 #define DUMP_MAGIC 0xdefec8edU /* dump magic number */
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46 #define DUMP_VERSION 10 /* version of this dumphdr */
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47 #define DUMP_WORDSIZE (sizeof (long) * NBBY) /* word size (32 or 64) */
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48 #define DUMP_PANICSIZE 200 /* Max panic string copied */
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49 #define DUMP_COMPRESS_RATIO 2 /* conservative; usually 2.5+ */
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50 #define DUMP_OFFSET 65536 /* pad at start/end of dev */
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51 #define DUMP_LOGSIZE (2 * LOG_HIWAT) /* /dev/log message save area */
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52 #define DUMP_ERPTSIZE (P2ROUNDUP( \
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53 (ERPT_DATA_SZ / 2) * \
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54 (ERPT_EVCH_MAX + \
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55 ERPT_MAX_ERRS * ERPT_HIWAT), \
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56 DUMP_OFFSET)) /* ereport save area */
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57 #define DUMP_SUMMARYSIZE (P2ROUNDUP( \
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58 (STACK_BUF_SIZE + \
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59 sizeof (summary_dump_t) + 1024), \
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60 DUMP_OFFSET)) /* summary save area */
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61
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62 typedef struct dumphdr {
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63 uint32_t dump_magic; /* magic number */
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64 uint32_t dump_version; /* version number */
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65 uint32_t dump_flags; /* flags; see below */
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66 uint32_t dump_wordsize; /* 32 or 64 */
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67 offset_t dump_start; /* starting offset on dump device */
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68 offset_t dump_ksyms; /* offset of compressed symbol table */
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69 offset_t dump_pfn; /* offset of pfn table for all pages */
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70 offset_t dump_map; /* offset of page translation map */
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71 offset_t dump_data; /* offset of actual dump data */
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72 struct utsname dump_utsname; /* copy of utsname structure */
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73 char dump_platform[SYS_NMLN]; /* platform name (uname -i) */
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74 char dump_panicstring[DUMP_PANICSIZE]; /* copy of panicstr */
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75 time_t dump_crashtime; /* time of crash */
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76 long dump_pageshift; /* log2(pagesize) */
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77 long dump_pagesize; /* pagesize */
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78 long dump_hashmask; /* page translation hash mask */
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79 long dump_nvtop; /* number of vtop table entries */
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80 pgcnt_t dump_npages; /* number of data pages */
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81 size_t dump_ksyms_size; /* kernel symbol table size */
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82 size_t dump_ksyms_csize; /* compressed symbol table size */
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83 uint32_t dump_fm_panic; /* initiated from fm subsystems */
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84 char dump_uuid[36 + 1]; /* os image uuid */
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85 } dumphdr_t;
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86
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87 /*
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88 * Values for dump_flags
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89 */
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90 #define DF_VALID 0x00000001 /* Dump is valid (savecore clears) */
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91 #define DF_COMPLETE 0x00000002 /* All pages present as configured */
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92 #define DF_LIVE 0x00000004 /* Dump was taken on a live system */
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93 #define DF_COMPRESSED 0x00000008 /* Dump is compressed */
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94 #define DF_KERNEL 0x00010000 /* Contains kernel pages only */
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95 #define DF_ALL 0x00020000 /* Contains all pages */
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96 #define DF_CURPROC 0x00040000 /* Contains kernel + cur proc pages */
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97 #define DF_CONTENT 0xffff0000 /* The set of all dump content flags */
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98
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99 /*
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100 * Dump translation map hash table entry.
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101 */
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102 typedef struct dump_map {
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103 offset_t dm_first;
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104 offset_t dm_next;
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105 offset_t dm_data;
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106 struct as *dm_as;
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107 uintptr_t dm_va;
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108 } dump_map_t;
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109
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110 /*
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111 * Dump translation map hash function.
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112 */
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113 #define DUMP_HASH(dhp, as, va) \
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114 ((((uintptr_t)(as) >> 3) + ((va) >> (dhp)->dump_pageshift)) & \
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115 (dhp)->dump_hashmask)
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116
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117 /*
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118 * Encoding of the csize word used to provide meta information
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119 * between dumpsys and savecore.
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120 *
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121 * tag size
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122 * 1-4095 1..dump_maxcsize stream block
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123 * 0 1..pagesize one lzjb page
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124 * 0 0 marks end of data
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125 */
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126 typedef uint32_t dumpcsize_t;
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127
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128 #define DUMP_MAX_TAG (0xfffU)
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129 #define DUMP_MAX_CSIZE (0xfffffU)
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130 #define DUMP_SET_TAG(w, v) (((w) & DUMP_MAX_CSIZE) | ((v) << 20))
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131 #define DUMP_GET_TAG(w) (((w) >> 20) & DUMP_MAX_TAG)
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132 #define DUMP_SET_CSIZE(w, v) \
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133 (((w) & (DUMP_MAX_TAG << 20)) | ((v) & DUMP_MAX_CSIZE))
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134 #define DUMP_GET_CSIZE(w) ((w) & DUMP_MAX_CSIZE)
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135
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136 typedef struct dumpstreamhdr {
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137 char stream_magic[8]; /* "StrmHdr" */
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138 pgcnt_t stream_pagenum; /* starting pfn */
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139 pgcnt_t stream_npages; /* uncompressed size */
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140 } dumpstreamhdr_t;
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141
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142 #define DUMP_STREAM_MAGIC "StrmHdr"
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143
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144 /* The number of helpers is limited by the number of stream tags. */
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145 #define DUMP_MAX_NHELPER DUMP_MAX_TAG
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146
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147 /*
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148 * The dump data header is placed after the dumphdr in the compressed
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149 * image. It is not needed after savecore runs and the data pages have
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150 * been decompressed.
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151 */
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152 typedef struct dumpdatahdr {
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153 uint32_t dump_datahdr_magic; /* data header presence */
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154 uint32_t dump_datahdr_version; /* data header version */
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155 uint64_t dump_data_csize; /* compressed data size */
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156 uint32_t dump_maxcsize; /* compressed data max block size */
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157 uint32_t dump_maxrange; /* max number of pages per range */
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158 uint16_t dump_nstreams; /* number of compression streams */
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159 uint16_t dump_clevel; /* compression level (0-9) */
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160 uint32_t dump_metrics; /* size of metrics data */
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161 } dumpdatahdr_t;
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162
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163 #define DUMP_DATAHDR_MAGIC ('d' << 24 | 'h' << 16 | 'd' << 8 | 'r')
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164
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165 #define DUMP_DATAHDR_VERSION 1
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166 #define DUMP_CLEVEL_LZJB 1 /* parallel lzjb compression */
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167 #define DUMP_CLEVEL_BZIP2 2 /* parallel bzip2 level 1 */
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168
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169 #ifdef _KERNEL
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170
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171 extern kmutex_t dump_lock;
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172 extern struct vnode *dumpvp;
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173 extern u_offset_t dumpvp_size;
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174 extern struct dumphdr *dumphdr;
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175 extern int dump_conflags;
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176 extern char *dumppath;
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177
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178 extern int dump_timeout;
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179 extern int dump_timeleft;
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180 extern int dump_ioerr;
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181 extern int sync_timeout;
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182 extern int sync_timeleft;
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183
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184 extern int dumpinit(struct vnode *, char *, int);
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185 extern void dumpfini(void);
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186 extern void dump_resize(void);
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187 extern void dump_page(pfn_t);
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188 extern void dump_addpage(struct as *, void *, pfn_t);
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189 extern void dumpsys(void);
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190 extern void dumpsys_helper(void);
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191 extern void dumpsys_helper_nw(void);
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192 extern void dump_messages(void);
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193 extern void dump_ereports(void);
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194 extern void dumpvp_write(const void *, size_t);
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195 extern int dumpvp_resize(void);
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196 extern int dump_plat_addr(void);
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197 extern void dump_plat_pfn(void);
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198 extern int dump_plat_data(void *);
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199 extern int dump_set_uuid(const char *);
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200 extern const char *dump_get_uuid(void);
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201
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202 /*
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203 * Define a CPU count threshold that determines when to employ
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204 * bzip2. This value is defined per-platform.
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205 */
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206 extern uint_t dump_plat_mincpu_default;
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207
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208 #define DUMP_PLAT_SUN4U_MINCPU 51
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209 #define DUMP_PLAT_SUN4U_OPL_MINCPU 8
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210 #define DUMP_PLAT_SUN4V_MINCPU 128
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211 #define DUMP_PLAT_X86_64_MINCPU 11
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212 #define DUMP_PLAT_X86_32_MINCPU 0
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213
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214 /*
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215 * Override the per-platform default by setting this variable with
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216 * /etc/system. The value 0 disables parallelism, and the old format
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217 * dump is produced.
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218 */
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219 extern uint_t dump_plat_mincpu;
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220
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221 /*
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222 * Pages may be stolen at dump time. Prevent the pages from ever being
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223 * allocated while dump is running.
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224 */
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225 #define IS_DUMP_PAGE(pp) (dump_check_used && dump_test_used((pp)->p_pagenum))
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226
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227 extern int dump_test_used(pfn_t);
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228 extern int dump_check_used;
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229
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230 #endif /* _KERNEL */
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231
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232 #ifdef __cplusplus
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233 }
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234 #endif
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235
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236 #endif /* _SYS_DUMPHDR_H */