git.ozlabs.org Git - petitboot/blob - lib/pb-config/pb-config.c

   1
   2 #include <log/log.h>
   3 #include <types/types.h>
   4 #include <talloc/talloc.h>
   5
   6 #include "pb-config.h"
   7
   8 #include "storage.h"
   9
  10 void                            *config_ctx;
  11 static struct config            *config;
  12 static struct config_storage    *storage;
  13
  14
  15 void config_set_defaults(struct config *config)
  16 {
  17         config->autoboot_enabled = true;
  18         config->autoboot_timeout_sec = 10;
  19         config->network.interfaces = NULL;
  20         config->network.n_interfaces = 0;
  21         config->network.dns_servers = NULL;
  22         config->network.n_dns_servers = 0;
  23
  24         config->n_boot_priorities = 2;
  25         config->boot_priorities = talloc_array(config, struct boot_priority,
  26                                                 config->n_boot_priorities);
  27         config->boot_priorities[0].type = DEVICE_TYPE_NETWORK;
  28         config->boot_priorities[1].type = DEVICE_TYPE_DISK;
  29
  30 }
  31
  32 void dump_config(struct config *config);
  33 void dump_config(struct config *config)
  34 {
  35         unsigned int i;
  36
  37         pb_log("configuration:\n");
  38
  39         if (config->autoboot_enabled)
  40                 pb_log(" autoboot: enabled, %d sec\n",
  41                                 config->autoboot_timeout_sec);
  42         else
  43                 pb_log(" autoboot: disabled\n");
  44
  45         if (config->network.n_interfaces || config->network.n_dns_servers)
  46                 pb_log(" network configuration:\n");
  47
  48         for (i = 0; i < config->network.n_interfaces; i++) {
  49                 struct interface_config *ifconf =
  50                         config->network.interfaces[i];
  51
  52                 pb_log("  interface %02x:%02x:%02x:%02x:%02x:%02x\n",
  53                                 ifconf->hwaddr[0], ifconf->hwaddr[1],
  54                                 ifconf->hwaddr[2], ifconf->hwaddr[3],
  55                                 ifconf->hwaddr[4], ifconf->hwaddr[5]);
  56
  57                 if (ifconf->ignore) {
  58                         pb_log("   ignore\n");
  59                         continue;
  60                 }
  61
  62                 if (ifconf->method == CONFIG_METHOD_DHCP) {
  63                         pb_log("   dhcp\n");
  64
  65                 } else if (ifconf->method == CONFIG_METHOD_STATIC) {
  66                         pb_log("   static:\n");
  67                         pb_log("    ip:  %s\n", ifconf->static_config.address);
  68                         pb_log("    gw:  %s\n", ifconf->static_config.gateway);
  69
  70                 }
  71         }
  72         for (i = 0; i < config->network.n_dns_servers; i++)
  73                 pb_log("  dns server %s\n", config->network.dns_servers[i]);
  74 }
  75
  76 int config_init(void *ctx)
  77 {
  78         config_ctx = talloc_new(ctx);
  79
  80         config = talloc(config_ctx, struct config);
  81         config_set_defaults(config);
  82
  83         storage = create_powerpc_nvram_storage(config);
  84
  85         storage->load(storage, config);
  86
  87         dump_config(config);
  88
  89         return 0;
  90 }
  91
  92 int config_set(struct config *newconfig)
  93 {
  94         int rc;
  95
  96         if (!storage || !storage->save)
  97                 return -1;
  98
  99         if (newconfig == config)
 100                 return 0;
 101
 102         pb_log("new configuration data received\n");
 103         dump_config(newconfig);
 104
 105         rc = storage->save(storage, newconfig);
 106
 107         if (!rc)
 108                 config = talloc_steal(config_ctx, newconfig);
 109         else
 110                 pb_log("error saving new configuration; changes lost\n");
 111
 112         return rc;
 113 }
 114
 115 /* A non-exported function to allow the test infrastructure to initialise
 116  * (and change) the configuration variables */
 117 struct parser_test;
 118 struct config __attribute__((unused)) *test_config_init(
 119                 struct parser_test *test);
 120 struct config *test_config_init(struct parser_test *test)
 121 {
 122         config = talloc(test, struct config);
 123         config_set_defaults(config);
 124         return config;
 125 }
 126
 127 const struct config *config_get(void)
 128 {
 129         return config;
 130 }
 131
 132 void config_set_autoboot(bool autoboot_enabled)
 133 {
 134         config->autoboot_enabled = autoboot_enabled;
 135
 136         pb_log("set autoboot: %s\n",
 137                         config->autoboot_enabled ? "enabled" : "disabled");
 138 }
 139
 140 int config_fini(void)
 141 {
 142         talloc_free(config_ctx);
 143         return 0;
 144 }