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         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->network.interfaces = NULL;
  91         config->network.n_interfaces = 0;
  92         config->network.dns_servers = NULL;
  93         config->network.n_dns_servers = 0;
  94         config->boot_device = NULL;
  95
  96         config->n_boot_priorities = 2;
  97         config->boot_priorities = talloc_array(config, struct boot_priority,
  98                                                 config->n_boot_priorities);
  99         config->boot_priorities[0].type = DEVICE_TYPE_NETWORK;
 100         config->boot_priorities[0].priority = 2;
 101         config->boot_priorities[1].type = DEVICE_TYPE_DISK;
 102         config->boot_priorities[1].priority = 1;
 103 }
 104
 105 int platform_init(void *ctx)
 106 {
 107         extern struct platform *__start_platforms,  *__stop_platforms;
 108         struct platform **p;
 109
 110         platform_ctx = talloc_new(ctx);
 111
 112         for (p = &__start_platforms; p < &__stop_platforms; p++) {
 113                 if (!(*p)->probe(*p, platform_ctx))
 114                         continue;
 115                 platform = *p;
 116                 break;
 117         }
 118
 119         config = talloc(platform_ctx, struct config);
 120         config_set_defaults(config);
 121
 122         if (platform) {
 123                 pb_log("Detected platform type: %s\n", platform->name);
 124                 if (platform->load_config)
 125                         platform->load_config(platform, config);
 126         } else {
 127                 pb_log("No platform type detected, some platform-specific "
 128                                 "functionality will be disabled\n");
 129         }
 130
 131         dump_config(config);
 132
 133         return 0;
 134 }
 135
 136 const struct platform *platform_get(void)
 137 {
 138         return platform;
 139 }
 140
 141 int config_set(struct config *newconfig)
 142 {
 143         int rc;
 144
 145         if (!platform || !platform->save_config)
 146                 return -1;
 147
 148         if (newconfig == config)
 149                 return 0;
 150
 151         pb_log("new configuration data received\n");
 152         dump_config(newconfig);
 153
 154         rc = platform->save_config(platform, newconfig);
 155
 156         if (!rc)
 157                 config = talloc_steal(platform_ctx, newconfig);
 158         else
 159                 pb_log("error saving new configuration; changes lost\n");
 160
 161         return rc;
 162 }
 163
 164 /* A non-exported function to allow the test infrastructure to initialise
 165  * (and change) the configuration variables */
 166 struct parser_test;
 167 struct config __attribute__((unused)) *test_config_init(
 168                 struct parser_test *test);
 169 struct config *test_config_init(struct parser_test *test)
 170 {
 171         config = talloc(test, struct config);
 172         config_set_defaults(config);
 173         return config;
 174 }
 175
 176 const struct config *config_get(void)
 177 {
 178         return config;
 179 }
 180
 181 void config_set_autoboot(bool autoboot_enabled)
 182 {
 183         config->autoboot_enabled = autoboot_enabled;
 184
 185         pb_log("set autoboot: %s\n",
 186                         config->autoboot_enabled ? "enabled" : "disabled");
 187 }
 188
 189 int platform_fini(void)
 190 {
 191         talloc_free(platform_ctx);
 192         return 0;
 193 }