git.ozlabs.org Git - petitboot/blob - discover/platform.c

   1
   2 #define _GNU_SOURCE
   3
   4 #include <fcntl.h>
   5 #include <string.h>
   6 #include <locale.h>
   7
   8 #include <log/log.h>
   9 #include <file/file.h>
  10 #include <types/types.h>
  11 #include <talloc/talloc.h>
  12
  13 #include "platform.h"
  14
  15 void                    *platform_ctx;
  16 static struct platform  *platform;
  17 static struct config    *config;
  18
  19 static const char *kernel_cmdline_debug = "petitboot.debug";
  20
  21 static void dump_config(struct config *config)
  22 {
  23         unsigned int i;
  24
  25         pb_log("configuration:\n");
  26
  27         if (config->autoboot_enabled)
  28                 pb_log(" autoboot: enabled, %d sec\n",
  29                                 config->autoboot_timeout_sec);
  30         else
  31                 pb_log(" autoboot: disabled\n");
  32
  33         if (config->network.n_interfaces || config->network.n_dns_servers)
  34                 pb_log(" network configuration:\n");
  35
  36         if (config->safe_mode)
  37                 pb_log(" safe mode: active\n");
  38
  39         if (config->disable_snapshots)
  40                 pb_log(" dm-snapshots disabled\n");
  41
  42         for (i = 0; i < config->network.n_interfaces; i++) {
  43                 struct interface_config *ifconf =
  44                         config->network.interfaces[i];
  45
  46                 pb_log("  interface %02x:%02x:%02x:%02x:%02x:%02x\n",
  47                                 ifconf->hwaddr[0], ifconf->hwaddr[1],
  48                                 ifconf->hwaddr[2], ifconf->hwaddr[3],
  49                                 ifconf->hwaddr[4], ifconf->hwaddr[5]);
  50
  51                 if (ifconf->ignore) {
  52                         pb_log("   ignore\n");
  53                         continue;
  54                 }
  55
  56                 if (ifconf->method == CONFIG_METHOD_DHCP) {
  57                         pb_log("   dhcp\n");
  58
  59                 } else if (ifconf->method == CONFIG_METHOD_STATIC) {
  60                         pb_log("   static:\n");
  61                         pb_log("    ip:  %s\n", ifconf->static_config.address);
  62                         pb_log("    gw:  %s\n", ifconf->static_config.gateway);
  63                         pb_log("    url:  %s\n", ifconf->static_config.url);
  64
  65                 }
  66         }
  67         for (i = 0; i < config->network.n_dns_servers; i++)
  68                 pb_log("  dns server %s\n", config->network.dns_servers[i]);
  69
  70         for (i = 0; i < config->n_autoboot_opts; i++) {
  71                 if (config->autoboot_opts[i].boot_type == BOOT_DEVICE_TYPE)
  72                         pb_log("  boot device %d: %s\n", i,
  73                                device_type_name(config->autoboot_opts[i].type));
  74                 else
  75                         pb_log("  boot device %d: uuid: %s\n",
  76                                i, config->autoboot_opts[i].uuid);
  77         }
  78
  79         pb_log("  IPMI boot device 0x%02x%s\n", config->ipmi_bootdev,
  80                         config->ipmi_bootdev_persistent ? " (persistent)" : "");
  81
  82         pb_log("  Modifications allowed to disks: %s\n",
  83                         config->allow_writes ? "yes" : "no");
  84
  85         pb_log("  Default UI to boot on: %s\n",
  86                 config->boot_console ?: "none set");
  87         if (config->manual_console)
  88                 pb_log("    (Manually set)\n");
  89
  90         if (config->http_proxy)
  91                 pb_log("  HTTP Proxy: %s\n", config->http_proxy);
  92         if (config->https_proxy)
  93                 pb_log("  HTTPS Proxy: %s\n", config->https_proxy);
  94
  95
  96         pb_log(" language: %s\n", config->lang ?: "");
  97 }
  98
  99 static bool config_debug_on_cmdline(void)
 100 {
 101         char buf[600];
 102         int rc, fd;
 103
 104         fd = open("/proc/cmdline", O_RDONLY);
 105         if (fd < 0)
 106                 return false;
 107
 108         rc = read(fd, buf, sizeof(buf));
 109         close(fd);
 110
 111         if (rc <= 0)
 112                 return false;
 113
 114         return memmem(buf, rc, kernel_cmdline_debug,
 115                         strlen(kernel_cmdline_debug)) != NULL;
 116 }
 117
 118 void config_set_defaults(struct config *config)
 119 {
 120         const char *lang;
 121
 122         config->autoboot_enabled = true;
 123         config->autoboot_timeout_sec = 10;
 124         config->autoboot_enabled = true;
 125         config->network.interfaces = NULL;
 126         config->network.n_interfaces = 0;
 127         config->network.dns_servers = NULL;
 128         config->network.n_dns_servers = 0;
 129         config->http_proxy = NULL;
 130         config->https_proxy = NULL;
 131         config->safe_mode = false;
 132         config->allow_writes = true;
 133         config->disable_snapshots = false;
 134
 135         config->n_consoles = 0;
 136         config->consoles = NULL;
 137         config->boot_console = NULL;
 138
 139         config->n_autoboot_opts = 2;
 140         config->autoboot_opts = talloc_array(config, struct autoboot_option,
 141                                                 config->n_autoboot_opts);
 142         config->autoboot_opts[0].boot_type = BOOT_DEVICE_TYPE;
 143         config->autoboot_opts[0].type = DEVICE_TYPE_NETWORK;
 144         config->autoboot_opts[1].boot_type = BOOT_DEVICE_TYPE;
 145         config->autoboot_opts[1].type = DEVICE_TYPE_ANY;
 146
 147         config->ipmi_bootdev = 0;
 148         config->ipmi_bootdev_persistent = false;
 149
 150         config->debug = config_debug_on_cmdline();
 151
 152         lang = setlocale(LC_ALL, NULL);
 153         pb_log("lang: %s\n", lang);
 154         if (lang && strlen(lang))
 155                 config->lang = talloc_strdup(config, lang);
 156         else
 157                 config->lang = NULL;
 158
 159 }
 160
 161 int platform_init(void *ctx)
 162 {
 163         extern struct platform *__start_platforms,  *__stop_platforms;
 164         struct platform **p;
 165
 166         platform_ctx = talloc_new(ctx);
 167
 168         for (p = &__start_platforms; p < &__stop_platforms; p++) {
 169                 if (!(*p)->probe(*p, platform_ctx))
 170                         continue;
 171                 platform = *p;
 172                 break;
 173         }
 174
 175         config = talloc(platform_ctx, struct config);
 176         config_set_defaults(config);
 177
 178         if (platform) {
 179                 pb_log("Detected platform type: %s\n", platform->name);
 180                 if (platform->load_config)
 181                         platform->load_config(platform, config);
 182         } else {
 183                 pb_log("No platform type detected, some platform-specific "
 184                                 "functionality will be disabled\n");
 185         }
 186
 187         dump_config(config);
 188
 189         return 0;
 190 }
 191
 192 const struct platform *platform_get(void)
 193 {
 194         return platform;
 195 }
 196
 197 void platform_pre_boot(void)
 198 {
 199         const struct config *config = config_get();
 200
 201         if (platform && config && platform->pre_boot)
 202                 platform->pre_boot(platform, config);
 203 }
 204
 205 int platform_get_sysinfo(struct system_info *info)
 206 {
 207         if (platform && platform->get_sysinfo)
 208                 return platform->get_sysinfo(platform, info);
 209         return -1;
 210 }
 211
 212 int config_set(struct config *newconfig)
 213 {
 214         int rc;
 215
 216         if (!platform || !platform->save_config)
 217                 return -1;
 218
 219         if (newconfig == config)
 220                 return 0;
 221
 222         pb_log("new configuration data received\n");
 223         dump_config(newconfig);
 224
 225         rc = platform->save_config(platform, newconfig);
 226
 227         if (!rc)
 228                 config = talloc_steal(platform_ctx, newconfig);
 229         else
 230                 pb_log("error saving new configuration; changes lost\n");
 231
 232         return rc;
 233 }
 234
 235 /* A non-exported function to allow the test infrastructure to initialise
 236  * (and change) the configuration variables */
 237 struct parser_test;
 238 struct config __attribute__((unused)) *test_config_init(
 239                 struct parser_test *test);
 240 struct config *test_config_init(struct parser_test *test)
 241 {
 242         config = talloc(test, struct config);
 243         config_set_defaults(config);
 244         return config;
 245 }
 246
 247 const struct config *config_get(void)
 248 {
 249         return config;
 250 }
 251
 252 void config_set_autoboot(bool autoboot_enabled)
 253 {
 254         config->autoboot_enabled = autoboot_enabled;
 255
 256         pb_log("set autoboot: %s\n",
 257                         config->autoboot_enabled ? "enabled" : "disabled");
 258 }
 259
 260 int platform_fini(void)
 261 {
 262         talloc_free(platform_ctx);
 263         return 0;
 264 }