if (access(next_log_file, F_OK) == 0)
__connman_log_update_file_revision(next_log_rev);
if (rename(log_file, next_log_file) != 0)
if (access(next_log_file, F_OK) == 0)
__connman_log_update_file_revision(next_log_rev);
if (rename(log_file, next_log_file) != 0)