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Commit b0fd65ad authored by Ajay Panicker's avatar Ajay Panicker Committed by Andre Eisenbach
Browse files

Create backup for bt_config.conf 

Move current config file to a backup when a new config file is
saved. This backup can be used in case there is an error loading
the current config file.

Change-Id: Icc210c457dc71a72fc2e82ff72c91207b25deaf1
parent 8baf307c

system/btif/src/btif_config.c

+11 −4
Original line number Diff line number Diff line
@@ -43,8 +43,10 @@ 
// TODO(armansito): Find a better way than searching by a hardcoded path.

#if defined(OS_GENERIC)

static const char *CONFIG_FILE_PATH = "bt_config.conf";

static const char *CONFIG_BACKUP_PATH = "bt_config.bak";

#else  // !defined(OS_GENERIC)

static const char *CONFIG_FILE_PATH = "/data/misc/bluedroid/bt_config.conf";

static const char *CONFIG_BACKUP_PATH = "/data/misc/bluedroid/bt_config.bak";

#endif  // defined(OS_GENERIC)

static const period_ms_t CONFIG_SETTLE_PERIOD_MS = 3000;
@@ -100,14 +102,18 @@ static future_t *init(void) { 
  pthread_mutex_init(&lock, NULL);

  config = config_new(CONFIG_FILE_PATH);

  if (!config) {

    LOG_WARN(LOG_TAG, "%s unable to load config file: %s; starting unconfigured.",

    LOG_WARN(LOG_TAG, "%s unable to load config file: %s; using backup.",

              __func__, CONFIG_FILE_PATH);

    config = config_new(CONFIG_BACKUP_PATH);

    if (!config) {

      LOG_ERROR(LOG_TAG, "%s unable to load backup; creating empty config.", __func__);

      config = config_new_empty();

      if (!config) {

        LOG_ERROR(LOG_TAG, "%s unable to allocate a config object.", __func__);

        goto error;

      }

    }

  }



  btif_config_devcache_cleanup();
@@ -397,6 +403,7 @@ static void btif_config_write(UNUSED_ATTR UINT16 event, UNUSED_ATTR char *p_para 
  btif_config_devcache_cleanup();



  pthread_mutex_lock(&lock);

  rename(CONFIG_FILE_PATH, CONFIG_BACKUP_PATH);

  config_save(config, CONFIG_FILE_PATH);

  pthread_mutex_unlock(&lock);

}