ui/ncurses: Add safe mode indicator
[petitboot] / discover / platform.c
1
2 #include <string.h>
3
4 #include <log/log.h>
5 #include <types/types.h>
6 #include <talloc/talloc.h>
7
8 #include "platform.h"
9
10 void                    *platform_ctx;
11 static struct platform  *platform;
12 static struct config    *config;
13
14 static const char *device_type_name(enum device_type type)
15 {
16         switch (type) {
17         case DEVICE_TYPE_DISK:
18                 return "disk";
19         case DEVICE_TYPE_OPTICAL:
20                 return "optical";
21         case DEVICE_TYPE_NETWORK:
22                 return "network";
23         case DEVICE_TYPE_ANY:
24                 return "any";
25         case DEVICE_TYPE_UNKNOWN:
26         default:
27                 return "unknown";
28         }
29 }
30
31 static void dump_config(struct config *config)
32 {
33         unsigned int i;
34
35         pb_log("configuration:\n");
36
37         if (config->autoboot_enabled)
38                 pb_log(" autoboot: enabled, %d sec\n",
39                                 config->autoboot_timeout_sec);
40         else
41                 pb_log(" autoboot: disabled\n");
42
43         if (config->network.n_interfaces || config->network.n_dns_servers)
44                 pb_log(" network configuration:\n");
45
46         if (config->safe_mode)
47                 pb_log(" safe mode: active\n");
48
49         for (i = 0; i < config->network.n_interfaces; i++) {
50                 struct interface_config *ifconf =
51                         config->network.interfaces[i];
52
53                 pb_log("  interface %02x:%02x:%02x:%02x:%02x:%02x\n",
54                                 ifconf->hwaddr[0], ifconf->hwaddr[1],
55                                 ifconf->hwaddr[2], ifconf->hwaddr[3],
56                                 ifconf->hwaddr[4], ifconf->hwaddr[5]);
57
58                 if (ifconf->ignore) {
59                         pb_log("   ignore\n");
60                         continue;
61                 }
62
63                 if (ifconf->method == CONFIG_METHOD_DHCP) {
64                         pb_log("   dhcp\n");
65
66                 } else if (ifconf->method == CONFIG_METHOD_STATIC) {
67                         pb_log("   static:\n");
68                         pb_log("    ip:  %s\n", ifconf->static_config.address);
69                         pb_log("    gw:  %s\n", ifconf->static_config.gateway);
70
71                 }
72         }
73         for (i = 0; i < config->network.n_dns_servers; i++)
74                 pb_log("  dns server %s\n", config->network.dns_servers[i]);
75
76         if (config->n_boot_priorities)
77                 pb_log(" boot priority order:\n");
78
79         for (i = 0; i < config->n_boot_priorities; i++) {
80                 struct boot_priority *prio = &config->boot_priorities[i];
81                 pb_log(" %10s: %d\n", device_type_name(prio->type),
82                                         prio->priority);
83         }
84 }
85
86 void config_set_defaults(struct config *config)
87 {
88         config->autoboot_enabled = true;
89         config->autoboot_timeout_sec = 10;
90         config->autoboot_enabled = true;
91         config->network.interfaces = NULL;
92         config->network.n_interfaces = 0;
93         config->network.dns_servers = NULL;
94         config->network.n_dns_servers = 0;
95         config->boot_device = NULL;
96
97         config->n_boot_priorities = 2;
98         config->boot_priorities = talloc_array(config, struct boot_priority,
99                                                 config->n_boot_priorities);
100         config->boot_priorities[0].type = DEVICE_TYPE_NETWORK;
101         config->boot_priorities[0].priority = 2;
102         config->boot_priorities[1].type = DEVICE_TYPE_DISK;
103         config->boot_priorities[1].priority = 1;
104 }
105
106 int platform_init(void *ctx)
107 {
108         extern struct platform *__start_platforms,  *__stop_platforms;
109         struct platform **p;
110
111         platform_ctx = talloc_new(ctx);
112
113         for (p = &__start_platforms; p < &__stop_platforms; p++) {
114                 if (!(*p)->probe(*p, platform_ctx))
115                         continue;
116                 platform = *p;
117                 break;
118         }
119
120         config = talloc(platform_ctx, struct config);
121         config_set_defaults(config);
122
123         if (platform) {
124                 pb_log("Detected platform type: %s\n", platform->name);
125                 if (platform->load_config)
126                         platform->load_config(platform, config);
127         } else {
128                 pb_log("No platform type detected, some platform-specific "
129                                 "functionality will be disabled\n");
130         }
131
132         dump_config(config);
133
134         return 0;
135 }
136
137 const struct platform *platform_get(void)
138 {
139         return platform;
140 }
141
142 int config_set(struct config *newconfig)
143 {
144         int rc;
145
146         if (!platform || !platform->save_config)
147                 return -1;
148
149         if (newconfig == config)
150                 return 0;
151
152         pb_log("new configuration data received\n");
153         dump_config(newconfig);
154
155         rc = platform->save_config(platform, newconfig);
156
157         if (!rc)
158                 config = talloc_steal(platform_ctx, newconfig);
159         else
160                 pb_log("error saving new configuration; changes lost\n");
161
162         return rc;
163 }
164
165 /* A non-exported function to allow the test infrastructure to initialise
166  * (and change) the configuration variables */
167 struct parser_test;
168 struct config __attribute__((unused)) *test_config_init(
169                 struct parser_test *test);
170 struct config *test_config_init(struct parser_test *test)
171 {
172         config = talloc(test, struct config);
173         config_set_defaults(config);
174         return config;
175 }
176
177 const struct config *config_get(void)
178 {
179         return config;
180 }
181
182 void config_set_autoboot(bool autoboot_enabled)
183 {
184         config->autoboot_enabled = autoboot_enabled;
185
186         pb_log("set autoboot: %s\n",
187                         config->autoboot_enabled ? "enabled" : "disabled");
188 }
189
190 int platform_fini(void)
191 {
192         talloc_free(platform_ctx);
193         return 0;
194 }