highlevel.c revision 9160:1517e6edbc6f 
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 2009 Sun Microsystems, Inc.  All rights reserved.
24 * Use is subject to license terms.
25 */
26
27/*
28 * This file contains high level functions used by multiple utilities.
29 */
30
31#include "libscf_impl.h"
32
33#include <assert.h>
34#include <libuutil.h>
35#include <string.h>
36#include <stdlib.h>
37#include <sys/systeminfo.h>
38#include <sys/uadmin.h>
39#include <sys/utsname.h>
40
41#ifdef	__x86
42#include <smbios.h>
43
44/*
45 * Check whether the platform is on the fastreboot_blacklist.
46 * Return 1 if the platform has been blacklisted, 0 otherwise.
47 */
48static int
49scf_is_fb_blacklisted(void)
50{
51	smbios_hdl_t *shp;
52	smbios_system_t sys;
53	smbios_info_t info;
54
55	id_t id;
56	int err;
57	int i;
58
59	scf_simple_prop_t *prop = NULL;
60	ssize_t numvals;
61	char *platform_name;
62
63	int blacklisted = 0;
64
65	/*
66	 * If there's no SMBIOS, assume it's blacklisted.
67	 */
68	if ((shp = smbios_open(NULL, SMB_VERSION, 0, &err)) == NULL)
69		return (1);
70
71	/*
72	 * If we can't read system info, assume it's blacklisted.
73	 */
74	if ((id = smbios_info_system(shp, &sys)) == SMB_ERR ||
75	    smbios_info_common(shp, id, &info) == SMB_ERR) {
76		blacklisted = 1;
77		goto fb_out;
78	}
79
80	/*
81	 * If we can't read the "platforms" property from property group
82	 * BOOT_CONFIG_PG_FBBLACKLIST, assume no platforms have
83	 * been blacklisted.
84	 */
85	if ((prop = scf_simple_prop_get(NULL, FMRI_BOOT_CONFIG,
86	    BOOT_CONFIG_PG_FBBLACKLIST, "platforms")) == NULL)
87		goto fb_out;
88
89	numvals = scf_simple_prop_numvalues(prop);
90
91	for (i = 0; i < numvals; i++) {
92		platform_name = scf_simple_prop_next_astring(prop);
93		if (platform_name == NULL)
94			break;
95		if (strcmp(platform_name, info.smbi_product) == 0) {
96			blacklisted = 1;
97			break;
98		}
99	}
100
101fb_out:
102	smbios_close(shp);
103	scf_simple_prop_free(prop);
104
105	return (blacklisted);
106}
107#endif	/* __x86 */
108
109/*
110 * Get config properties from svc:/system/boot-config:default.
111 * It prints errors with uu_warn().
112 */
113void
114scf_get_boot_config(uint8_t *boot_config)
115{
116	assert(boot_config);
117	*boot_config = 0;
118
119#ifndef	__x86
120	return;
121#else
122	{
123		/*
124		 * Property vector for BOOT_CONFIG_PG_PARAMS property group.
125		 */
126		scf_propvec_t ua_boot_config[] = {
127			{ "fastreboot_default", NULL, SCF_TYPE_BOOLEAN, NULL,
128			    UA_FASTREBOOT_DEFAULT },
129			{ FASTREBOOT_ONPANIC, NULL, SCF_TYPE_BOOLEAN, NULL,
130			    UA_FASTREBOOT_ONPANIC },
131			{ NULL }
132		};
133		scf_propvec_t	*prop;
134
135		for (prop = ua_boot_config; prop->pv_prop != NULL; prop++)
136			prop->pv_ptr = boot_config;
137		prop = NULL;
138		if (scf_read_propvec(FMRI_BOOT_CONFIG, BOOT_CONFIG_PG_PARAMS,
139		    B_TRUE, ua_boot_config, &prop) != SCF_FAILED) {
140			/*
141			 * Unset both flags if the platform has been
142			 * blacklisted.
143			 */
144			if (scf_is_fb_blacklisted())
145				*boot_config &= ~(UA_FASTREBOOT_DEFAULT |
146				    UA_FASTREBOOT_ONPANIC);
147			return;
148		}
149#if defined(FASTREBOOT_DEBUG)
150		if (prop != NULL) {
151			(void) uu_warn("Service %s property '%s/%s' "
152			    "not found.\n", FMRI_BOOT_CONFIG,
153			    BOOT_CONFIG_PG_PARAMS, prop->pv_prop);
154		} else {
155			(void) uu_warn("Unable to read service %s "
156			    "property '%s': %s\n", FMRI_BOOT_CONFIG,
157			    BOOT_CONFIG_PG_PARAMS, scf_strerror(scf_error()));
158		}
159#endif	/* FASTREBOOT_DEBUG */
160	}
161#endif	/* __x86 */
162}
163
164/*
165 * Check whether Fast Reboot is the default operating mode.
166 * Return 0 if
167 *   1. the platform is xVM
168 * or
169 *   2. svc:/system/boot-config:default service doesn't exist,
170 * or
171 *   3. property "fastreboot_default" doesn't exist,
172 * or
173 *   4. value of property "fastreboot_default" is set to 0.
174 * or
175 *   5. the platform has been blacklisted.
176 * Return non-zero otherwise.
177 */
178int
179scf_is_fastboot_default(void)
180{
181	uint8_t	boot_config = 0;
182	char procbuf[SYS_NMLN];
183
184	/*
185	 * If we are on xVM, do not fast reboot by default.
186	 */
187	if (sysinfo(SI_PLATFORM, procbuf, sizeof (procbuf)) == -1 ||
188	    strcmp(procbuf, "i86xpv") == 0)
189		return (0);
190
191	scf_get_boot_config(&boot_config);
192	return (boot_config & UA_FASTREBOOT_DEFAULT);
193}
194