summaryrefslogtreecommitdiffstats
path: root/discover/platform.c
blob: b1d0f19bafadd8a1ca1059bfe530c04de26eb801 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230

#define _GNU_SOURCE

#include <fcntl.h>
#include <string.h>

#include <log/log.h>
#include <file/file.h>
#include <types/types.h>
#include <talloc/talloc.h>

#include "platform.h"

void			*platform_ctx;
static struct platform	*platform;
static struct config	*config;

static const char *kernel_cmdline_debug = "petitboot.debug";

static void dump_config(struct config *config)
{
	unsigned int i;

	pb_log("configuration:\n");

	if (config->autoboot_enabled)
		pb_log(" autoboot: enabled, %d sec\n",
				config->autoboot_timeout_sec);
	else
		pb_log(" autoboot: disabled\n");

	if (config->network.n_interfaces || config->network.n_dns_servers)
		pb_log(" network configuration:\n");

	if (config->safe_mode)
		pb_log(" safe mode: active\n");

	for (i = 0; i < config->network.n_interfaces; i++) {
		struct interface_config *ifconf =
			config->network.interfaces[i];

		pb_log("  interface %02x:%02x:%02x:%02x:%02x:%02x\n",
				ifconf->hwaddr[0], ifconf->hwaddr[1],
				ifconf->hwaddr[2], ifconf->hwaddr[3],
				ifconf->hwaddr[4], ifconf->hwaddr[5]);

		if (ifconf->ignore) {
			pb_log("   ignore\n");
			continue;
		}

		if (ifconf->method == CONFIG_METHOD_DHCP) {
			pb_log("   dhcp\n");

		} else if (ifconf->method == CONFIG_METHOD_STATIC) {
			pb_log("   static:\n");
			pb_log("    ip:  %s\n", ifconf->static_config.address);
			pb_log("    gw:  %s\n", ifconf->static_config.gateway);

		}
	}
	for (i = 0; i < config->network.n_dns_servers; i++)
		pb_log("  dns server %s\n", config->network.dns_servers[i]);

	for (i = 0; i < config->n_autoboot_opts; i++) {
		if (config->autoboot_opts[i].boot_type == BOOT_DEVICE_TYPE)
			pb_log("  boot device %d: %s\n", i,
			       device_type_name(config->autoboot_opts[i].type));
		else
			pb_log("  boot device %d: uuid: %s\n",
			       i, config->autoboot_opts[i].uuid);
	}

	pb_log("  IPMI boot device 0x%02x%s\n", config->ipmi_bootdev,
			config->ipmi_bootdev_persistent ? " (persistent)" : "");


	pb_log(" language: %s\n", config->lang ?: "");
}

static bool config_debug_on_cmdline(void)
{
	char buf[600];
	int rc, fd;

	fd = open("/proc/cmdline", O_RDONLY);
	if (fd < 0)
		return false;

	rc = read(fd, buf, sizeof(buf));
	close(fd);

	if (rc <= 0)
		return false;

	return memmem(buf, rc, kernel_cmdline_debug,
			strlen(kernel_cmdline_debug)) != NULL;
}

void config_set_defaults(struct config *config)
{
	config->autoboot_enabled = true;
	config->autoboot_timeout_sec = 10;
	config->autoboot_enabled = true;
	config->network.interfaces = NULL;
	config->network.n_interfaces = 0;
	config->network.dns_servers = NULL;
	config->network.n_dns_servers = 0;
	config->safe_mode = false;
	config->lang = NULL;
	config->allow_writes = true;

	config->n_autoboot_opts = 2;
	config->autoboot_opts = talloc_array(config, struct autoboot_option,
						config->n_autoboot_opts);
	config->autoboot_opts[0].boot_type = BOOT_DEVICE_TYPE;
	config->autoboot_opts[0].type = DEVICE_TYPE_NETWORK;
	config->autoboot_opts[1].boot_type = BOOT_DEVICE_TYPE;
	config->autoboot_opts[1].type = DEVICE_TYPE_ANY;

	config->ipmi_bootdev = 0;
	config->ipmi_bootdev_persistent = false;

	config->debug = config_debug_on_cmdline();
}

int platform_init(void *ctx)
{
	extern struct platform *__start_platforms,  *__stop_platforms;
	struct platform **p;

	platform_ctx = talloc_new(ctx);

	for (p = &__start_platforms; p < &__stop_platforms; p++) {
		if (!(*p)->probe(*p, platform_ctx))
			continue;
		platform = *p;
		break;
	}

	config = talloc(platform_ctx, struct config);
	config_set_defaults(config);

	if (platform) {
		pb_log("Detected platform type: %s\n", platform->name);
		if (platform->load_config)
			platform->load_config(platform, config);
	} else {
		pb_log("No platform type detected, some platform-specific "
				"functionality will be disabled\n");
	}

	dump_config(config);

	return 0;
}

const struct platform *platform_get(void)
{
	return platform;
}

void platform_pre_boot(void)
{
	const struct config *config = config_get();

	if (platform && config && platform->pre_boot)
		platform->pre_boot(platform, config);
}

int platform_get_sysinfo(struct system_info *info)
{
	if (platform && platform->get_sysinfo)
		return platform->get_sysinfo(platform, info);
	return -1;
}

int config_set(struct config *newconfig)
{
	int rc;

	if (!platform || !platform->save_config)
		return -1;

	if (newconfig == config)
		return 0;

	pb_log("new configuration data received\n");
	dump_config(newconfig);

	rc = platform->save_config(platform, newconfig);

	if (!rc)
		config = talloc_steal(platform_ctx, newconfig);
	else
		pb_log("error saving new configuration; changes lost\n");

	return rc;
}

/* A non-exported function to allow the test infrastructure to initialise
 * (and change) the configuration variables */
struct parser_test;
struct config __attribute__((unused)) *test_config_init(
		struct parser_test *test);
struct config *test_config_init(struct parser_test *test)
{
	config = talloc(test, struct config);
	config_set_defaults(config);
	return config;
}

const struct config *config_get(void)
{
	return config;
}

void config_set_autoboot(bool autoboot_enabled)
{
	config->autoboot_enabled = autoboot_enabled;

	pb_log("set autoboot: %s\n",
			config->autoboot_enabled ? "enabled" : "disabled");
}

int platform_fini(void)
{
	talloc_free(platform_ctx);
	return 0;
}
OpenPOWER on IntegriCloud