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