void (*update_status)(struct status *status, void *arg);
void (*update_sysinfo)(struct system_info *sysinfo, void *arg);
void (*update_config)(struct config *sysinfo, void *arg);
void (*update_status)(struct status *status, void *arg);
void (*update_sysinfo)(struct system_info *sysinfo, void *arg);
void (*update_config)(struct config *sysinfo, void *arg);