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 http://www.opensolaris.org/os/licensing. 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 * Copyright 2008 Sun Microsystems, Inc. All rights reserved. 23 * Use is subject to license terms. 24 */ 25 26 #pragma ident "%Z%%M% %I% %E% SMI" 27 28 /* 29 * RCM module for managing the OS Quiesce event (SUNW_OS) in a 30 * clustered environment. 31 */ 32 33 #include <stdlib.h> 34 #include <unistd.h> 35 #include <fcntl.h> 36 #include <string.h> 37 #include <thread.h> 38 #include <synch.h> 39 #include <assert.h> 40 #include <errno.h> 41 #include <libintl.h> 42 #include <sys/param.h> 43 #include <sys/wait.h> 44 #include <sys/types.h> 45 #include <sys/stat.h> 46 #include <sys/cladm.h> 47 #include "rcm_module.h" 48 49 #define SUNW_OS "SUNW_OS" 50 #define OS_USAGE gettext("Sun Cluster") 51 #define OS_SUSPEND_ERR gettext("OS cannot be quiesced on clustered nodes") 52 #define OS_OFFLINE_ERR gettext("Invalid operation: OS cannot be offlined") 53 #define OS_REMOVE_ERR gettext("Invalid operation: OS cannot be removed") 54 55 static int cluster_register(rcm_handle_t *); 56 static int cluster_unregister(rcm_handle_t *); 57 static int cluster_getinfo(rcm_handle_t *, char *, id_t, uint_t, 58 char **, char **, nvlist_t *, rcm_info_t **); 59 static int cluster_suspend(rcm_handle_t *, char *, id_t, 60 timespec_t *, uint_t, char **, rcm_info_t **); 61 static int cluster_resume(rcm_handle_t *, char *, id_t, uint_t, 62 char **, rcm_info_t **); 63 static int cluster_offline(rcm_handle_t *, char *, id_t, uint_t, 64 char **, rcm_info_t **); 65 static int cluster_online(rcm_handle_t *, char *, id_t, uint_t, 66 char **, rcm_info_t **); 67 static int cluster_remove(rcm_handle_t *, char *, id_t, uint_t, 68 char **, rcm_info_t **); 69 70 static int cluster_SUNW_os_registered = 0; 71 72 static struct rcm_mod_ops cluster_ops = 73 { 74 RCM_MOD_OPS_VERSION, 75 cluster_register, 76 cluster_unregister, 77 cluster_getinfo, 78 cluster_suspend, 79 cluster_resume, 80 cluster_offline, 81 cluster_online, 82 cluster_remove, 83 NULL, 84 NULL, 85 NULL 86 }; 87 88 struct rcm_mod_ops * 89 rcm_mod_init() 90 { 91 return (&cluster_ops); 92 } 93 94 const char * 95 rcm_mod_info() 96 { 97 return (gettext("RCM Cluster module 1.3")); 98 } 99 100 int 101 rcm_mod_fini() 102 { 103 return (RCM_SUCCESS); 104 } 105 106 static int 107 cluster_register(rcm_handle_t *hdl) 108 { 109 int bootflags; 110 111 if (cluster_SUNW_os_registered) 112 return (RCM_SUCCESS); 113 114 if (_cladm(CL_INITIALIZE, CL_GET_BOOTFLAG, &bootflags) != 0) { 115 rcm_log_message(RCM_ERROR, 116 gettext("unable to check cluster status\n")); 117 return (RCM_FAILURE); 118 } 119 120 /* attempt to determine if we are in cluster mode */ 121 122 if (bootflags & CLUSTER_BOOTED) { 123 if (rcm_register_interest(hdl, SUNW_OS, 0, NULL) != 124 RCM_SUCCESS) { 125 rcm_log_message(RCM_ERROR, 126 gettext("failed to register\n")); 127 return (RCM_FAILURE); 128 } else { 129 cluster_SUNW_os_registered = 1; 130 rcm_log_message(RCM_DEBUG, "registered " SUNW_OS 131 "\n"); 132 } 133 } 134 135 return (RCM_SUCCESS); 136 } 137 138 static int 139 cluster_unregister(rcm_handle_t *hdl) 140 { 141 142 if (cluster_SUNW_os_registered) { 143 if (rcm_unregister_interest(hdl, SUNW_OS, 0) != 144 RCM_SUCCESS) { 145 rcm_log_message(RCM_ERROR, 146 gettext("failed to unregister")); 147 } 148 cluster_SUNW_os_registered = 0; 149 } 150 return (RCM_SUCCESS); 151 } 152 153 /*ARGSUSED*/ 154 static int 155 cluster_getinfo(rcm_handle_t *hdl, char *rsrcname, id_t id, uint_t flags, 156 char **infostr, char **errstr, nvlist_t *props, rcm_info_t **dependent) 157 { 158 159 assert(rsrcname != NULL && infostr != NULL); 160 161 if ((*infostr = strdup(OS_USAGE)) == NULL) 162 rcm_log_message(RCM_ERROR, gettext("strdup failure\n")); 163 164 return (RCM_SUCCESS); 165 } 166 167 /*ARGSUSED*/ 168 static int 169 cluster_suspend(rcm_handle_t *hdl, char *rsrcname, id_t id, 170 timespec_t *interval, uint_t flags, char **errstr, 171 rcm_info_t **dependent) 172 { 173 if ((*errstr = strdup(OS_SUSPEND_ERR)) == NULL) 174 rcm_log_message(RCM_ERROR, gettext("strdup failure\n")); 175 176 return (RCM_FAILURE); 177 } 178 179 /*ARGSUSED*/ 180 static int 181 cluster_resume(rcm_handle_t *hdl, char *rsrcname, id_t id, uint_t flags, 182 char **errstr, rcm_info_t **dependent) 183 { 184 return (RCM_SUCCESS); 185 } 186 187 /* 188 * By default, reject offline. If offline request is 189 * forced, attempt to relocate the cluster device. 190 */ 191 /*ARGSUSED*/ 192 static int 193 cluster_offline(rcm_handle_t *hdl, char *rsrcname, id_t id, uint_t flags, 194 char **errstr, rcm_info_t **dependent) 195 { 196 if ((*errstr = strdup(OS_OFFLINE_ERR)) == NULL) 197 rcm_log_message(RCM_ERROR, gettext("strdup failure\n")); 198 199 return (RCM_FAILURE); 200 } 201 202 /*ARGSUSED*/ 203 static int 204 cluster_online(rcm_handle_t *hdl, char *rsrcname, id_t id, uint_t flags, 205 char **errstr, rcm_info_t **dependent) 206 { 207 return (RCM_SUCCESS); 208 } 209 210 /*ARGSUSED*/ 211 static int 212 cluster_remove(rcm_handle_t *hdl, char *rsrcname, id_t id, uint_t flags, 213 char **errstr, rcm_info_t **dependent) 214 { 215 if ((*errstr = strdup(OS_REMOVE_ERR)) == NULL) 216 rcm_log_message(RCM_ERROR, gettext("strdup failure\n")); 217 218 return (RCM_FAILURE); 219 } 220