extern int ustcmd_set_marker_state(const char *, int, pid_t);
extern int ustcmd_set_subbuf_size(const char *, pid_t);
extern int ustcmd_set_subbuf_num(const char *, pid_t);
extern int ustcmd_set_marker_state(const char *, int, pid_t);
extern int ustcmd_set_subbuf_size(const char *, pid_t);
extern int ustcmd_set_subbuf_num(const char *, pid_t);