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 void dump_config(struct config *config)
  15 {
  16         unsigned int i;
  17
  18         pb_log("configuration:\n");
  19
  20         if (config->autoboot_enabled)
  21                 pb_log(" autoboot: enabled, %d sec\n",
  22                                 config->autoboot_timeout_sec);
  23         else
  24                 pb_log(" autoboot: disabled\n");
  25
  26         if (config->network.n_interfaces || config->network.n_dns_servers)
  27                 pb_log(" network configuration:\n");
  28
  29         for (i = 0; i < config->network.n_interfaces; i++) {
  30                 struct interface_config *ifconf =
  31                         config->network.interfaces[i];
  32
  33                 pb_log("  interface %02x:%02x:%02x:%02x:%02x:%02x\n",
  34                                 ifconf->hwaddr[0], ifconf->hwaddr[1],
  35                                 ifconf->hwaddr[2], ifconf->hwaddr[3],
  36                                 ifconf->hwaddr[4], ifconf->hwaddr[5]);
  37
  38                 if (ifconf->ignore) {
  39                         pb_log("   ignore\n");
  40                         continue;
  41                 }
  42
  43                 if (ifconf->method == CONFIG_METHOD_DHCP) {
  44                         pb_log("   dhcp\n");
  45
  46                 } else if (ifconf->method == CONFIG_METHOD_STATIC) {
  47                         pb_log("   static:\n");
  48                         pb_log("    ip:  %s\n", ifconf->static_config.address);
  49                         pb_log("    gw:  %s\n", ifconf->static_config.gateway);
  50
  51                 }
  52         }
  53         for (i = 0; i < config->network.n_dns_servers; i++)
  54                 pb_log("  dns server %s\n", config->network.dns_servers[i]);
  55 }
  56
  57 void config_set_defaults(struct config *config)
  58 {
  59         config->autoboot_enabled = true;
  60         config->autoboot_timeout_sec = 10;
  61         config->network.interfaces = NULL;
  62         config->network.n_interfaces = 0;
  63         config->network.dns_servers = NULL;
  64         config->network.n_dns_servers = 0;
  65
  66         config->n_boot_priorities = 2;
  67         config->boot_priorities = talloc_array(config, struct boot_priority,
  68                                                 config->n_boot_priorities);
  69         config->boot_priorities[0].type = DEVICE_TYPE_NETWORK;
  70         config->boot_priorities[1].type = DEVICE_TYPE_DISK;
  71
  72 }
  73
  74 int platform_init(void *ctx)
  75 {
  76         extern struct platform *__start_platforms,  *__stop_platforms;
  77         struct platform **p;
  78
  79         platform_ctx = talloc_new(ctx);
  80
  81         for (p = &__start_platforms; p < &__stop_platforms; p++) {
  82                 if (!(*p)->probe(*p, platform_ctx))
  83                         continue;
  84                 platform = *p;
  85                 break;
  86         }
  87
  88         config = talloc(platform_ctx, struct config);
  89         config_set_defaults(config);
  90
  91         if (platform) {
  92                 pb_log("Detected platform type: %s\n", platform->name);
  93                 if (platform->load_config)
  94                         platform->load_config(platform, config);
  95         } else {
  96                 pb_log("No platform type detected, some platform-specific "
  97                                 "functionality will be disabled\n");
  98         }
  99
 100         dump_config(config);
 101
 102         return 0;
 103 }
 104
 105 const struct platform *platform_get(void)
 106 {
 107         return platform;
 108 }
 109
 110 int config_set(struct config *newconfig)
 111 {
 112         int rc;
 113
 114         if (!platform || !platform->save_config)
 115                 return -1;
 116
 117         if (newconfig == config)
 118                 return 0;
 119
 120         pb_log("new configuration data received\n");
 121         dump_config(newconfig);
 122
 123         rc = platform->save_config(platform, newconfig);
 124
 125         if (!rc)
 126                 config = talloc_steal(platform_ctx, newconfig);
 127         else
 128                 pb_log("error saving new configuration; changes lost\n");
 129
 130         return rc;
 131 }
 132
 133 /* A non-exported function to allow the test infrastructure to initialise
 134  * (and change) the configuration variables */
 135 struct parser_test;
 136 struct config __attribute__((unused)) *test_config_init(
 137                 struct parser_test *test);
 138 struct config *test_config_init(struct parser_test *test)
 139 {
 140         config = talloc(test, struct config);
 141         config_set_defaults(config);
 142         return config;
 143 }
 144
 145 const struct config *config_get(void)
 146 {
 147         return config;
 148 }
 149
 150 void config_set_autoboot(bool autoboot_enabled)
 151 {
 152         config->autoboot_enabled = autoboot_enabled;
 153
 154         pb_log("set autoboot: %s\n",
 155                         config->autoboot_enabled ? "enabled" : "disabled");
 156 }
 157
 158 int platform_fini(void)
 159 {
 160         talloc_free(platform_ctx);
 161         return 0;
 162 }