Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)
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FreeBSD/Linux Kernel Cross Reference
sys/contrib/openzfs/cmd/zed/agents/fmd_api.h
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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 https://opensource.org/licenses/CDDL-1.0. 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 /* 23 * Copyright (c) 2004, 2010, Oracle and/or its affiliates. All rights reserved. 24 * 25 * Copyright (c) 2016, Intel Corporation. 26 */ 27 28 #ifndef _FMD_API_H 29 #define _FMD_API_H 30 31 #include <sys/types.h> 32 #include <sys/time.h> 33 #include <time.h> 34 #include <libnvpair.h> 35 #include <stdarg.h> 36 #include <umem.h> 37 38 #ifdef __cplusplus 39 extern "C" { 40 #endif 41 42 /* 43 * Fault Management Daemon Client Interfaces 44 */ 45 46 #define FMD_API_VERSION 5 47 48 typedef struct fmd_hdl fmd_hdl_t; 49 50 typedef struct fmd_timer { 51 timer_t ft_tid; 52 void *ft_arg; 53 fmd_hdl_t *ft_hdl; 54 } fmd_timer_t; 55 56 #define id_t fmd_timer_t * 57 58 59 typedef struct fmd_event { 60 hrtime_t ev_hrt; /* event time used by SERD engines */ 61 } fmd_event_t; 62 63 typedef struct fmd_case { 64 char ci_uuid[48]; /* uuid string for this case */ 65 fmd_hdl_t *ci_mod; /* module that owns this case */ 66 void *ci_data; /* data from fmd_case_setspecific() */ 67 ushort_t ci_state; /* case state (see below) */ 68 ushort_t ci_flags; /* case flags (see below) */ 69 struct timeval ci_tv; /* time of original diagnosis */ 70 void *ci_bufptr; /* case data serialization buffer */ 71 size_t ci_bufsiz; 72 } fmd_case_t; 73 74 75 #define FMD_CASE_UNSOLVED 0 /* case is not yet solved (waiting) */ 76 #define FMD_CASE_SOLVED 1 /* case is solved (suspects added) */ 77 #define FMD_CASE_CLOSE_WAIT 2 /* case is executing fmdo_close() */ 78 #define FMD_CASE_CLOSED 3 /* case is closed (reconfig done) */ 79 #define FMD_CASE_REPAIRED 4 /* case is repaired */ 80 #define FMD_CASE_RESOLVED 5 /* case is resolved (can be freed) */ 81 82 #define FMD_CF_DIRTY 0x01 /* case is in need of checkpoint */ 83 #define FMD_CF_SOLVED 0x02 /* case has been solved */ 84 #define FMD_CF_ISOLATED 0x04 /* case has been isolated */ 85 #define FMD_CF_REPAIRED 0x08 /* case has been repaired */ 86 #define FMD_CF_RESOLVED 0x10 /* case has been resolved */ 87 88 89 #define FMD_TYPE_BOOL 0 /* int */ 90 #define FMD_TYPE_INT32 1 /* int32_t */ 91 #define FMD_TYPE_UINT32 2 /* uint32_t */ 92 #define FMD_TYPE_INT64 3 /* int64_t */ 93 #define FMD_TYPE_UINT64 4 /* uint64_t */ 94 #define FMD_TYPE_TIME 5 /* uint64_t */ 95 #define FMD_TYPE_SIZE 6 /* uint64_t */ 96 97 typedef struct fmd_prop { 98 const char *fmdp_name; /* property name */ 99 uint_t fmdp_type; /* property type (see above) */ 100 const char *fmdp_defv; /* default value */ 101 } fmd_prop_t; 102 103 typedef struct fmd_stat { 104 char fmds_name[32]; /* statistic name */ 105 uint_t fmds_type; /* statistic type (see above) */ 106 char fmds_desc[64]; /* statistic description */ 107 union { 108 int bool; /* FMD_TYPE_BOOL */ 109 int32_t i32; /* FMD_TYPE_INT32 */ 110 uint32_t ui32; /* FMD_TYPE_UINT32 */ 111 int64_t i64; /* FMD_TYPE_INT64 */ 112 uint64_t ui64; /* FMD_TYPE_UINT64 */ 113 } fmds_value; 114 } fmd_stat_t; 115 116 typedef struct fmd_hdl_ops { 117 void (*fmdo_recv)(fmd_hdl_t *, fmd_event_t *, nvlist_t *, const char *); 118 void (*fmdo_timeout)(fmd_hdl_t *, id_t, void *); 119 void (*fmdo_close)(fmd_hdl_t *, fmd_case_t *); 120 void (*fmdo_stats)(fmd_hdl_t *); 121 void (*fmdo_gc)(fmd_hdl_t *); 122 } fmd_hdl_ops_t; 123 124 #define FMD_SEND_SUCCESS 0 /* fmdo_send queued event */ 125 #define FMD_SEND_FAILED 1 /* fmdo_send unrecoverable error */ 126 #define FMD_SEND_RETRY 2 /* fmdo_send requests retry */ 127 128 typedef struct fmd_hdl_info { 129 const char *fmdi_desc; /* fmd client description string */ 130 const char *fmdi_vers; /* fmd client version string */ 131 const fmd_hdl_ops_t *fmdi_ops; /* ops vector for client */ 132 const fmd_prop_t *fmdi_props; /* array of configuration props */ 133 } fmd_hdl_info_t; 134 135 extern int fmd_hdl_register(fmd_hdl_t *, int, const fmd_hdl_info_t *); 136 extern void fmd_hdl_unregister(fmd_hdl_t *); 137 138 extern void fmd_hdl_setspecific(fmd_hdl_t *, void *); 139 extern void *fmd_hdl_getspecific(fmd_hdl_t *); 140 141 #define FMD_SLEEP UMEM_NOFAIL 142 143 extern void *fmd_hdl_alloc(fmd_hdl_t *, size_t, int); 144 extern void *fmd_hdl_zalloc(fmd_hdl_t *, size_t, int); 145 extern void fmd_hdl_free(fmd_hdl_t *, void *, size_t); 146 147 extern char *fmd_hdl_strdup(fmd_hdl_t *, const char *, int); 148 extern void fmd_hdl_strfree(fmd_hdl_t *, char *); 149 150 extern void fmd_hdl_vdebug(fmd_hdl_t *, const char *, va_list); 151 extern void fmd_hdl_debug(fmd_hdl_t *, const char *, ...); 152 153 extern int32_t fmd_prop_get_int32(fmd_hdl_t *, const char *); 154 extern int64_t fmd_prop_get_int64(fmd_hdl_t *, const char *); 155 156 #define FMD_STAT_NOALLOC 0x0 /* fmd should use caller's memory */ 157 #define FMD_STAT_ALLOC 0x1 /* fmd should allocate stats memory */ 158 159 extern fmd_stat_t *fmd_stat_create(fmd_hdl_t *, uint_t, uint_t, fmd_stat_t *); 160 extern void fmd_stat_destroy(fmd_hdl_t *, uint_t, fmd_stat_t *); 161 extern void fmd_stat_setstr(fmd_hdl_t *, fmd_stat_t *, const char *); 162 163 extern fmd_case_t *fmd_case_open(fmd_hdl_t *, void *); 164 extern void fmd_case_reset(fmd_hdl_t *, fmd_case_t *); 165 extern void fmd_case_solve(fmd_hdl_t *, fmd_case_t *); 166 extern void fmd_case_close(fmd_hdl_t *, fmd_case_t *); 167 168 extern const char *fmd_case_uuid(fmd_hdl_t *, fmd_case_t *); 169 extern fmd_case_t *fmd_case_uulookup(fmd_hdl_t *, const char *); 170 extern void fmd_case_uuclose(fmd_hdl_t *, const char *); 171 extern int fmd_case_uuclosed(fmd_hdl_t *, const char *); 172 extern int fmd_case_uuisresolved(fmd_hdl_t *, const char *); 173 extern void fmd_case_uuresolved(fmd_hdl_t *, const char *); 174 175 extern boolean_t fmd_case_solved(fmd_hdl_t *, fmd_case_t *); 176 177 extern void fmd_case_add_ereport(fmd_hdl_t *, fmd_case_t *, fmd_event_t *); 178 extern void fmd_case_add_serd(fmd_hdl_t *, fmd_case_t *, const char *); 179 extern void fmd_case_add_suspect(fmd_hdl_t *, fmd_case_t *, nvlist_t *); 180 181 extern void fmd_case_setspecific(fmd_hdl_t *, fmd_case_t *, void *); 182 extern void *fmd_case_getspecific(fmd_hdl_t *, fmd_case_t *); 183 184 extern fmd_case_t *fmd_case_next(fmd_hdl_t *, fmd_case_t *); 185 extern fmd_case_t *fmd_case_prev(fmd_hdl_t *, fmd_case_t *); 186 187 extern void fmd_buf_create(fmd_hdl_t *, fmd_case_t *, const char *, size_t); 188 extern void fmd_buf_destroy(fmd_hdl_t *, fmd_case_t *, const char *); 189 extern void fmd_buf_read(fmd_hdl_t *, fmd_case_t *, 190 const char *, void *, size_t); 191 extern void fmd_buf_write(fmd_hdl_t *, fmd_case_t *, 192 const char *, const void *, size_t); 193 extern size_t fmd_buf_size(fmd_hdl_t *, fmd_case_t *, const char *); 194 195 extern void fmd_serd_create(fmd_hdl_t *, const char *, uint_t, hrtime_t); 196 extern void fmd_serd_destroy(fmd_hdl_t *, const char *); 197 extern int fmd_serd_exists(fmd_hdl_t *, const char *); 198 extern void fmd_serd_reset(fmd_hdl_t *, const char *); 199 extern int fmd_serd_record(fmd_hdl_t *, const char *, fmd_event_t *); 200 extern int fmd_serd_fired(fmd_hdl_t *, const char *); 201 extern int fmd_serd_empty(fmd_hdl_t *, const char *); 202 203 extern id_t fmd_timer_install(fmd_hdl_t *, void *, fmd_event_t *, hrtime_t); 204 extern void fmd_timer_remove(fmd_hdl_t *, id_t); 205 206 extern nvlist_t *fmd_nvl_create_fault(fmd_hdl_t *, 207 const char *, uint8_t, nvlist_t *, nvlist_t *, nvlist_t *); 208 209 extern int fmd_nvl_class_match(fmd_hdl_t *, nvlist_t *, const char *); 210 211 #define FMD_HAS_FAULT_FRU 0 212 #define FMD_HAS_FAULT_ASRU 1 213 #define FMD_HAS_FAULT_RESOURCE 2 214 215 extern void fmd_repair_fru(fmd_hdl_t *, const char *); 216 extern int fmd_repair_asru(fmd_hdl_t *, const char *); 217 218 extern nvlist_t *fmd_nvl_alloc(fmd_hdl_t *, int); 219 extern nvlist_t *fmd_nvl_dup(fmd_hdl_t *, nvlist_t *, int); 220 221 /* 222 * ZED Specific Interfaces 223 */ 224 225 extern fmd_hdl_t *fmd_module_hdl(const char *); 226 extern boolean_t fmd_module_initialized(fmd_hdl_t *); 227 extern void fmd_module_recv(fmd_hdl_t *, nvlist_t *, const char *); 228 229 /* ZFS FMA Retire Agent */ 230 extern void _zfs_retire_init(fmd_hdl_t *); 231 extern void _zfs_retire_fini(fmd_hdl_t *); 232 233 /* ZFS FMA Diagnosis Engine */ 234 extern void _zfs_diagnosis_init(fmd_hdl_t *); 235 extern void _zfs_diagnosis_fini(fmd_hdl_t *); 236 237 #ifdef __cplusplus 238 } 239 #endif 240 241 #endif /* _FMD_API_H */
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