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
  92         config->n_boot_priorities = 2;
  93         config->boot_priorities = talloc_array(config, struct boot_priority,
  94                                                 config->n_boot_priorities);
  95         config->boot_priorities[0].type = DEVICE_TYPE_NETWORK;
  96         config->boot_priorities[0].priority = 2;
  97         config->boot_priorities[1].type = DEVICE_TYPE_DISK;
  98         config->boot_priorities[1].priority = 1;
  99 }
 100
 101 int platform_init(void *ctx)
 102 {
 103         extern struct platform *__start_platforms,  *__stop_platforms;
 104         struct platform **p;
 105
 106         platform_ctx = talloc_new(ctx);
 107
 108         for (p = &__start_platforms; p < &__stop_platforms; p++) {
 109                 if (!(*p)->probe(*p, platform_ctx))
 110                         continue;
 111                 platform = *p;
 112                 break;
 113         }
 114
 115         config = talloc(platform_ctx, struct config);
 116         config_set_defaults(config);
 117
 118         if (platform) {
 119                 pb_log("Detected platform type: %s\n", platform->name);
 120                 if (platform->load_config)
 121                         platform->load_config(platform, config);
 122         } else {
 123                 pb_log("No platform type detected, some platform-specific "
 124                                 "functionality will be disabled\n");
 125         }
 126
 127         dump_config(config);
 128
 129         return 0;
 130 }
 131
 132 const struct platform *platform_get(void)
 133 {
 134         return platform;
 135 }
 136
 137 int config_set(struct config *newconfig)
 138 {
 139         int rc;
 140
 141         if (!platform || !platform->save_config)
 142                 return -1;
 143
 144         if (newconfig == config)
 145                 return 0;
 146
 147         pb_log("new configuration data received\n");
 148         dump_config(newconfig);
 149
 150         rc = platform->save_config(platform, newconfig);
 151
 152         if (!rc)
 153                 config = talloc_steal(platform_ctx, newconfig);
 154         else
 155                 pb_log("error saving new configuration; changes lost\n");
 156
 157         return rc;
 158 }
 159
 160 /* A non-exported function to allow the test infrastructure to initialise
 161  * (and change) the configuration variables */
 162 struct parser_test;
 163 struct config __attribute__((unused)) *test_config_init(
 164                 struct parser_test *test);
 165 struct config *test_config_init(struct parser_test *test)
 166 {
 167         config = talloc(test, struct config);
 168         config_set_defaults(config);
 169         return config;
 170 }
 171
 172 const struct config *config_get(void)
 173 {
 174         return config;
 175 }
 176
 177 void config_set_autoboot(bool autoboot_enabled)
 178 {
 179         config->autoboot_enabled = autoboot_enabled;
 180
 181         pb_log("set autoboot: %s\n",
 182                         config->autoboot_enabled ? "enabled" : "disabled");
 183 }
 184
 185 int platform_fini(void)
 186 {
 187         talloc_free(platform_ctx);
 188         return 0;
 189 }