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 2005 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 /* 31 * University Copyright- Copyright (c) 1982, 1986, 1988 32 * The Regents of the University of California 33 * All Rights Reserved 34 * 35 * University Acknowledgment- Portions of this document are derived from 36 * software developed by the University of California, Berkeley, and its 37 * contributors. 38 */ 39 40 #ifndef _SM_STATD_H 41 #define _SM_STATD_H 42 43 #pragma ident "%Z%%M% %I% %E% SMI" 44 45 #ifdef __cplusplus 46 extern "C" { 47 #endif 48 49 /* Limit defines */ 50 #define SM_DIRECTORY_MODE 00755 51 #define MAX_HASHSIZE 50 52 #define SM_RPC_TIMEOUT 15 53 #define PERCENT_MINJOIN 10 54 #define MAX_FDS 256 55 #define MAX_THR 25 56 #define INC_DELAYTIME 30 57 #define MAX_DELAYTIME 300 58 #define SM_CLTS_TIMEOUT 15 59 /* max strlen of /statmon/state, /statmon/sm.bak, /statmon/sm */ 60 #define SM_MAXPATHLEN 17 61 /* Increment size for realloc of array host_name */ 62 #define HOST_NAME_INCR 5 63 64 /* supported address family names in /var/statmon symlinks */ 65 #define SM_ADDR_IPV4 "ipv4" 66 #define SM_ADDR_IPV6 "ipv6" 67 68 /* Supported for readdir_r() */ 69 #define MAXDIRENT (sizeof (struct dirent) + _POSIX_PATH_MAX + 1) 70 71 /* Structure entry for monitor table (mon_table) */ 72 struct mon_entry { 73 mon id; /* mon information: mon_name, my_id */ 74 struct mon_entry *prev; /* Prev ptr to prev entry in hash */ 75 struct mon_entry *nxt; /* Next ptr to next entry in hash */ 76 }; 77 typedef struct mon_entry mon_entry; 78 79 /* Structure entry for record (rec_table) and recovery (recov_q) tables */ 80 struct name_entry { 81 char *name; /* name of host */ 82 int count; /* count of entries */ 83 struct name_entry *prev; /* Prev ptr to prev entry in hash */ 84 struct name_entry *nxt; /* Next ptr to next entry in hash */ 85 }; 86 typedef struct name_entry name_entry; 87 88 /* Structure for passing arguments into thread send_notice */ 89 typedef struct moninfo { 90 mon id; /* Monitor information */ 91 int state; /* Current state */ 92 } moninfo_t; 93 94 /* Structure entry for hash tables */ 95 typedef struct sm_hash { 96 union { 97 struct mon_entry *mon_hdptr; /* Head ptr for mon_table */ 98 name_entry *rec_hdptr; /* Head ptr for rec_table */ 99 name_entry *recov_hdptr; /* Head ptr for recov_q */ 100 } smhd_t; 101 mutex_t lock; /* Lock to protect each list head */ 102 } sm_hash_t; 103 104 #define sm_monhdp smhd_t.mon_hdptr 105 #define sm_rechdp smhd_t.rec_hdptr 106 #define sm_recovhdp smhd_t.recov_hdptr 107 108 /* Structure entry for address list in name-to-address entry */ 109 typedef struct addr_entry { 110 struct addr_entry *next; 111 struct netobj ah; 112 sa_family_t family; 113 } addr_entry_t; 114 115 /* Structure entry for name-to-address translation table */ 116 typedef struct name_addr_entry { 117 struct name_addr_entry *next; 118 char *name; 119 struct addr_entry *addresses; 120 } name_addr_entry_t; 121 122 /* Hash tables for each of the in-cache information */ 123 extern sm_hash_t mon_table[MAX_HASHSIZE]; 124 125 /* Global variables */ 126 extern mutex_t crash_lock; /* lock for die and crash variables */ 127 extern int die; /* Flag to indicate that an SM_CRASH */ 128 /* request came in & to stop threads cleanly */ 129 extern int in_crash; /* Flag to single thread sm_crash requests. */ 130 extern int regfiles_only; /* Flag to indicate symlink use in statmon */ 131 extern cond_t crash_finish; /* Condition to wait until crash is finished */ 132 extern mutex_t sm_trylock; /* Lock to single thread sm_try */ 133 /* 134 * The only established lock precedence here is: 135 * 136 * thr_rwlock > name_addrlock 137 */ 138 extern mutex_t name_addrlock; /* Locks all entries of name-to-addr table */ 139 extern rwlock_t thr_rwlock; /* Reader/writer lock for requests coming in */ 140 extern cond_t retrywait; /* Condition to wait before starting retry */ 141 142 extern char STATE[MAXPATHLEN], CURRENT[MAXPATHLEN]; 143 extern char BACKUP[MAXPATHLEN]; 144 extern int LOCAL_STATE; 145 146 /* 147 * Hash functions for monitor and record hash tables. 148 * Functions are hashed based on first 2 letters and last 2 letters of name. 149 * If only 1 letter in name, then, hash only on 1 letter. 150 */ 151 #define SMHASH(name, key) { \ 152 int l; \ 153 key = *name; \ 154 if ((l = strlen(name)) != 1) \ 155 key |= ((*(name+(l-1)) << 24) | (*(name+1) << 16) | \ 156 (*(name+(l-2)) << 8)); \ 157 key = key % MAX_HASHSIZE; \ 158 } 159 160 extern int debug; /* Prints out debug information if set. */ 161 162 extern char hostname[MAXHOSTNAMELEN]; 163 164 /* 165 * These variables will be used to store all the 166 * alias names for the host, as well as the -a 167 * command line hostnames. 168 */ 169 extern char **host_name; /* store -a opts */ 170 extern int host_name_count; 171 extern int addrix; /* # of -a entries */ 172 173 /* 174 * The following 2 variables are meaningful 175 * only under a HA configuration. 176 */ 177 extern char **path_name; /* store -p opts */ 178 extern int pathix; /* # of -p entries */ 179 180 /* Function prototypes used in program */ 181 extern int create_file(char *name); 182 extern void delete_file(char *name); 183 extern void record_name(char *name, int op); 184 extern void sm_crash(void); 185 extern void sm_notify(stat_chge *ntfp); 186 extern void statd_init(); 187 extern void merge_hosts(void); 188 extern CLIENT *create_client(char *, int, int, struct timeval *); 189 extern char *xmalloc(unsigned); 190 extern void sm_status(sm_name *namep, sm_stat_res *resp); 191 extern void sm_mon(mon *monp, sm_stat_res *resp); 192 extern void sm_unmon(mon_id *monidp, sm_stat *resp); 193 extern void sm_unmon_all(my_id *myidp, sm_stat *resp); 194 extern void sm_simu_crash(void *myidp); 195 extern void sm_inithash(); 196 extern void copydir_from_to(char *from_dir, char *to_dir); 197 extern int str_cmp_unqual_hostname(char *, char *); 198 extern void nsmaddrproc1_reg(reg1args *, reg1res *); 199 extern void record_addr(char *name, sa_family_t family, struct netobj *ah); 200 extern int is_symlink(char *file); 201 extern int create_symlink(char *todir, char *rname, char *lname); 202 extern int str_cmp_address_specifier(char *specifier1, char *specifier2); 203 204 #ifdef __cplusplus 205 } 206 #endif 207 208 #endif /* _SM_STATD_H */ 209