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 /*
23 * Copyright 2010 Sun Microsystems, Inc. All rights reserved.
24 * Use is subject to license terms.
25 */
26
27 /*
28 * Logical Domains System Agent
29 */
30
31 #include <errno.h>
32 #include <fcntl.h>
33 #include <libds.h>
34 #include <stdio.h>
35 #include <stdlib.h>
36 #include <strings.h>
37 #include <synch.h>
38 #include <thread.h>
39 #include <unistd.h>
40 #include <sys/utsname.h>
41 #include <sys/mdesc.h>
42 #include <sys/mdesc_impl.h>
43
44 #include "ldma.h"
45 #include "pri.h"
46
47 #define LDMA_MODULE LDMA_NAME_SYSTEM
48
49 #define LDMA_NVERSIONS (sizeof (ldma_versions) / sizeof (ds_ver_t))
50 #define LDMA_NHANDLERS (sizeof (ldma_handlers) / sizeof (ldma_msg_handler_t))
51
52 static ldm_msg_func_t ldma_sys_get_sysinfo;
53 static ldm_msg_func_t ldma_sys_get_chassisno;
54
55 /* ptr to cached value of chassisno */
56 static char *ldma_sys_chassisno = NULL;
57 mutex_t ldma_chassisno_lock = DEFAULTMUTEX;
58
59 static ds_ver_t ldma_versions[] = { { 1, 0 } };
60
61 static ldma_msg_handler_t ldma_handlers[] = {
62 { LDMA_MSGSYS_GET_SYSINFO, LDMA_MSGFLG_ACCESS_ANY,
63 ldma_sys_get_sysinfo },
64 { LDMA_MSGSYS_GET_CHASSISNO, LDMA_MSGFLG_ACCESS_ANY,
65 ldma_sys_get_chassisno }
66 };
67
68 ldma_agent_info_t ldma_system_info = {
69 LDMA_NAME_SYSTEM,
70 ldma_versions, LDMA_NVERSIONS,
71 ldma_handlers, LDMA_NHANDLERS
72 };
73
74 /*ARGSUSED*/
75 static ldma_request_status_t
ldma_sys_get_sysinfo(ds_ver_t * ver,ldma_message_header_t * request,size_t request_dlen,ldma_message_header_t ** replyp,size_t * reply_dlenp)76 ldma_sys_get_sysinfo(ds_ver_t *ver, ldma_message_header_t *request,
77 size_t request_dlen, ldma_message_header_t **replyp, size_t *reply_dlenp)
78 {
79 ldma_message_header_t *reply;
80 struct utsname name;
81 size_t syslen, nodlen, rellen, maclen, verlen;
82 size_t rlen;
83 char *data;
84 int status;
85
86 LDMA_DBG("GET_SYSINFO");
87
88 if (request->msg_info != 0 || request_dlen != 0) {
89 status = LDMA_REQ_INVALID;
90 goto done;
91 }
92
93 if (uname(&name) == -1) {
94 LDMA_DBG("GET_SYSINFO: uname failed with error %d", errno);
95 status = LDMA_REQ_FAILED;
96 goto done;
97 }
98
99 syslen = strlen(name.sysname) + 1;
100 nodlen = strlen(name.nodename) + 1;
101 rellen = strlen(name.release) + 1;
102 verlen = strlen(name.version) + 1;
103 maclen = strlen(name.machine) + 1;
104
105 rlen = syslen + nodlen + rellen + verlen + maclen;
106
107 reply = ldma_alloc_result_msg(request, rlen);
108
109 if (reply == NULL) {
110 status = LDMA_REQ_FAILED;
111 goto done;
112 }
113
114 reply->msg_info = rlen;
115
116 data = LDMA_HDR2DATA(reply);
117
118 (void) strcpy(data, name.sysname);
119 data += syslen;
120
121 (void) strcpy(data, name.nodename);
122 data += nodlen;
123
124 (void) strcpy(data, name.release);
125 data += rellen;
126
127 (void) strcpy(data, name.version);
128 data += verlen;
129
130 (void) strcpy(data, name.machine);
131
132 LDMA_DBG("GET_SYSINFO: return info=%u, {%s, %s, %s, %s, %s}", rlen,
133 name.sysname, name.nodename, name.release, name.version,
134 name.machine);
135
136 *replyp = reply;
137 *reply_dlenp = rlen;
138
139 return (LDMA_REQ_COMPLETED);
140
141 done:
142 LDMA_DBG("GET_SYSINFO: return error %d", status);
143 return (status);
144 }
145
146 /*
147 * Wrapper for MD free: need unused size argument.
148 */
149 /* ARGSUSED */
150 static void
ldma_md_free(void * buf,size_t n)151 ldma_md_free(void *buf, size_t n)
152 {
153 free(buf);
154 }
155
156 /*
157 * Wrapper for MD init: read PRI MD and invoke md_init_intern.
158 */
159 static md_t *
ldma_md_init()160 ldma_md_init()
161 {
162 md_t *mdp;
163 uint64_t *buf = NULL;
164 uint64_t token;
165 ssize_t status;
166
167 if (pri_init() == -1)
168 return (NULL);
169
170 status = pri_get(PRI_GET, &token, &buf, malloc, ldma_md_free);
171 pri_fini();
172
173 if (status == (ssize_t)(-1))
174 return (NULL);
175
176 mdp = md_init_intern(buf, malloc, ldma_md_free);
177
178 return (mdp);
179 }
180
181 /*
182 * Wrapper for md_fini. Allow NULL md ptr and free MD buffer.
183 */
184 static void
ldma_md_fini(void * md)185 ldma_md_fini(void *md)
186 {
187 md_impl_t *mdp = (md_impl_t *)md;
188
189 if (mdp) {
190 free(mdp->caddr);
191 (void) md_fini(md);
192 }
193 }
194
195 static int
ldma_get_chassis_serialno(char ** strp)196 ldma_get_chassis_serialno(char **strp)
197 {
198 md_t *mdp;
199 mde_cookie_t *component_nodes, rootnode;
200 int list_size, ncomponents, num_nodes, i;
201 char *component_type, *serialno;
202 int rv = 0;
203
204 (void) mutex_lock(&ldma_chassisno_lock);
205 if (ldma_sys_chassisno != NULL) {
206 *strp = ldma_sys_chassisno;
207 (void) mutex_unlock(&ldma_chassisno_lock);
208 return (1);
209 }
210
211 mdp = ldma_md_init();
212 if (mdp == NULL) {
213 (void) mutex_unlock(&ldma_chassisno_lock);
214 return (0);
215 }
216
217 num_nodes = md_node_count(mdp);
218 list_size = num_nodes * sizeof (mde_cookie_t);
219 component_nodes = malloc(list_size);
220 if (component_nodes == NULL) {
221 (void) mutex_unlock(&ldma_chassisno_lock);
222 ldma_md_fini(mdp);
223 return (0);
224 }
225
226 rootnode = md_root_node(mdp);
227
228 ncomponents = md_scan_dag(mdp, rootnode, md_find_name(mdp, "component"),
229 md_find_name(mdp, "fwd"), component_nodes);
230
231 for (i = 0; i < ncomponents; i++) {
232 if (md_get_prop_str(mdp, component_nodes[i], "type",
233 &component_type))
234 continue;
235 if (strcmp(component_type, "chassis") != 0)
236 continue;
237 if (md_get_prop_str(mdp, component_nodes[i],
238 "serial_number", &serialno) == 0) {
239 ldma_sys_chassisno = strdup(serialno);
240 *strp = ldma_sys_chassisno;
241 rv = 1;
242 break;
243 }
244 }
245 (void) mutex_unlock(&ldma_chassisno_lock);
246 free(component_nodes);
247 ldma_md_fini(mdp);
248 return (rv);
249 }
250
251 /*ARGSUSED*/
252 static ldma_request_status_t
ldma_sys_get_chassisno(ds_ver_t * ver,ldma_message_header_t * request,size_t request_dlen,ldma_message_header_t ** replyp,size_t * reply_dlenp)253 ldma_sys_get_chassisno(ds_ver_t *ver, ldma_message_header_t *request,
254 size_t request_dlen, ldma_message_header_t **replyp, size_t *reply_dlenp)
255 {
256 ldma_message_header_t *reply;
257 char *str;
258 size_t rlen;
259 char *data;
260 int status;
261
262 LDMA_DBG("GET_CHASSISNO");
263
264 if (request->msg_info != 0 || request_dlen != 0) {
265 status = LDMA_REQ_INVALID;
266 goto done;
267 }
268
269 if (ldma_get_chassis_serialno(&str) == 0) {
270 LDMA_DBG("GET_CHASSISNO: ldma_get_chassisno failed "
271 "with error %d", errno);
272 status = LDMA_REQ_FAILED;
273 goto done;
274 }
275
276 rlen = strlen(str) + 1;
277
278 reply = ldma_alloc_result_msg(request, rlen);
279
280 if (reply == NULL) {
281 status = LDMA_REQ_FAILED;
282 goto done;
283 }
284
285 reply->msg_info = rlen;
286
287 data = LDMA_HDR2DATA(reply);
288
289 (void) strcpy(data, str);
290
291 LDMA_DBG("GET_CHASSISNO: return info=%u, {%s}", rlen, str);
292
293 *replyp = reply;
294 *reply_dlenp = rlen;
295
296 return (LDMA_REQ_COMPLETED);
297
298 done:
299 LDMA_DBG("GET_CHASSISNO: return error %d", status);
300 return (status);
301 }
302