git.ozlabs.org Git - petitboot/blob - 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         for (i = 0; i < config->network.n_interfaces; i++) {
  47                 struct interface_config *ifconf =
  48                         config->network.interfaces[i];
  49
  50                 pb_log("  interface %02x:%02x:%02x:%02x:%02x:%02x\n",
  51                                 ifconf->hwaddr[0], ifconf->hwaddr[1],
  52                                 ifconf->hwaddr[2], ifconf->hwaddr[3],
  53                                 ifconf->hwaddr[4], ifconf->hwaddr[5]);
  54
  55                 if (ifconf->ignore) {
  56                         pb_log("   ignore\n");
  57                         continue;
  58                 }
  59
  60                 if (ifconf->method == CONFIG_METHOD_DHCP) {
  61                         pb_log("   dhcp\n");
  62
  63                 } else if (ifconf->method == CONFIG_METHOD_STATIC) {
  64                         pb_log("   static:\n");
  65                         pb_log("    ip:  %s\n", ifconf->static_config.address);
  66                         pb_log("    gw:  %s\n", ifconf->static_config.gateway);
  67
  68                 }
  69         }
  70         for (i = 0; i < config->network.n_dns_servers; i++)
  71                 pb_log("  dns server %s\n", config->network.dns_servers[i]);
  72
  73         if (config->n_boot_priorities)
  74                 pb_log(" boot priority order:\n");
  75
  76         for (i = 0; i < config->n_boot_priorities; i++) {
  77                 struct boot_priority *prio = &config->boot_priorities[i];
  78                 pb_log(" %10s: %d\n", device_type_name(prio->type),
  79                                         prio->priority);
  80         }
  81 }
  82
  83 void config_set_defaults(struct config *config)
  84 {
  85         config->autoboot_enabled = true;
  86         config->autoboot_timeout_sec = 10;
  87         config->network.interfaces = NULL;
  88         config->network.n_interfaces = 0;
  89         config->network.dns_servers = NULL;
  90         config->network.n_dns_servers = 0;
  91         config->boot_device = NULL;
  92
  93         config->n_boot_priorities = 2;
  94         config->boot_priorities = talloc_array(config, struct boot_priority,
  95                                                 config->n_boot_priorities);
  96         config->boot_priorities[0].type = DEVICE_TYPE_NETWORK;
  97         config->boot_priorities[0].priority = 2;
  98         config->boot_priorities[1].type = DEVICE_TYPE_DISK;
  99         config->boot_priorities[1].priority = 1;
 100 }
 101
 102 int platform_init(void *ctx)
 103 {
 104         extern struct platform *__start_platforms,  *__stop_platforms;
 105         struct platform **p;
 106
 107         platform_ctx = talloc_new(ctx);
 108
 109         for (p = &__start_platforms; p < &__stop_platforms; p++) {
 110                 if (!(*p)->probe(*p, platform_ctx))
 111                         continue;
 112                 platform = *p;
 113                 break;
 114         }
 115
 116         config = talloc(platform_ctx, struct config);
 117         config_set_defaults(config);
 118
 119         if (platform) {
 120                 pb_log("Detected platform type: %s\n", platform->name);
 121                 if (platform->load_config)
 122                         platform->load_config(platform, config);
 123         } else {
 124                 pb_log("No platform type detected, some platform-specific "
 125                                 "functionality will be disabled\n");
 126         }
 127
 128         dump_config(config);
 129
 130         return 0;
 131 }
 132
 133 const struct platform *platform_get(void)
 134 {
 135         return platform;
 136 }
 137
 138 int config_set(struct config *newconfig)
 139 {
 140         int rc;
 141
 142         if (!platform || !platform->save_config)
 143                 return -1;
 144
 145         if (newconfig == config)
 146                 return 0;
 147
 148         pb_log("new configuration data received\n");
 149         dump_config(newconfig);
 150
 151         rc = platform->save_config(platform, newconfig);
 152
 153         if (!rc)
 154                 config = talloc_steal(platform_ctx, newconfig);
 155         else
 156                 pb_log("error saving new configuration; changes lost\n");
 157
 158         return rc;
 159 }
 160
 161 /* A non-exported function to allow the test infrastructure to initialise
 162  * (and change) the configuration variables */
 163 struct parser_test;
 164 struct config __attribute__((unused)) *test_config_init(
 165                 struct parser_test *test);
 166 struct config *test_config_init(struct parser_test *test)
 167 {
 168         config = talloc(test, struct config);
 169         config_set_defaults(config);
 170         return config;
 171 }
 172
 173 const struct config *config_get(void)
 174 {
 175         return config;
 176 }
 177
 178 void config_set_autoboot(bool autoboot_enabled)
 179 {
 180         config->autoboot_enabled = autoboot_enabled;
 181
 182         pb_log("set autoboot: %s\n",
 183                         config->autoboot_enabled ? "enabled" : "disabled");
 184 }
 185
 186 int platform_fini(void)
 187 {
 188         talloc_free(platform_ctx);
 189         return 0;
 190 }