diff --git a/include/minix/com.h b/include/minix/com.h
index 3fa0030fb..fa30bd79f 100755
--- a/include/minix/com.h
+++ b/include/minix/com.h
@@ -385,15 +385,13 @@
 
 #define SRV_UP		(SRV_RQ_BASE + 0)	/* start system service */
 #define SRV_DOWN	(SRV_RQ_BASE + 1)	/* stop system service */
-#define SRV_STATUS	(SRV_RQ_BASE + 2)	/* get service status */
+#define SRV_SHUTDOWN	(SRV_RQ_BASE + 2)	/* alert about shutdown */
 
-#  define SRV_PATH_ADDR		m1_p1		/* path of binary */
-#  define SRV_PATH_LEN		m1_i1		/* length of binary */
-#  define SRV_ARGS_ADDR         m1_p2		/* arguments to be passed */
-#  define SRV_ARGS_LEN          m1_i2		/* length of arguments */
+#  define SRV_CMD_ADDR		m1_p1		/* command string */
+#  define SRV_CMD_LEN		m1_i1		/* length of command */
+#  define SRV_PID		m1_i1		/* pid of system service */
+#  define SRV_PERIOD 	        m1_i2		/* heartbeat period */
 #  define SRV_DEV_MAJOR         m1_i3           /* major device number */
-#  define SRV_PRIV_ADDR         m1_p3		/* privileges string */
-#  define SRV_PRIV_LEN          m1_i3		/* length of privileges */
 
 /*===========================================================================*
  *                Miscellaneous messages used by TTY			     *
diff --git a/include/unistd.h b/include/unistd.h
index 6f60b2a81..6d9a6f2db 100755
--- a/include/unistd.h
+++ b/include/unistd.h
@@ -109,6 +109,7 @@ _PROTOTYPE( int getgroups, (int _gidsetsize, gid_t _grouplist[])	);
 _PROTOTYPE( char *getlogin, (void)					);
 _PROTOTYPE( pid_t getpgrp, (void)					);
 _PROTOTYPE( pid_t getpid, (void)					);
+_PROTOTYPE( pid_t getnpid, (int proc_nr)				);
 _PROTOTYPE( pid_t getppid, (void)					);
 _PROTOTYPE( uid_t getuid, (void)					);
 _PROTOTYPE( int isatty, (int _fd)					);
@@ -162,6 +163,8 @@ _PROTOTYPE( int fttyslot, (int _fd)					);
 _PROTOTYPE( char *crypt, (const char *_key, const char *_salt)		);
 _PROTOTYPE( int getsysinfo, (int who, int what, void *where)		);
 _PROTOTYPE( int getprocnr, (void)					);
+_PROTOTYPE( int getnprocnr, (pid_t pid)					);
+_PROTOTYPE( int getpprocnr, (void)					);
 _PROTOTYPE( int findproc, (char *proc_name, int *proc_nr)		);
 _PROTOTYPE( int allocmem, (phys_bytes size, phys_bytes *base)		);
 _PROTOTYPE( int freemem, (phys_bytes size, phys_bytes base)		);