Index: ioccom.h
===================================================================
RCS file: /home/ncvs/src/sys/sys/ioccom.h,v
retrieving revision 1.15
diff -u -r1.15 ioccom.h
--- ioccom.h	7 Apr 2004 04:19:49 -0000	1.15
+++ ioccom.h	18 Mar 2006 15:26:30 -0000
@@ -68,4 +68,54 @@
 
 #endif
 
+/*
+ * List of known ioctl groups (subsystems).
+ */
+#define	IOCTL_GROUP_PPS		'1'		/* timepps.h */
+#define	IOCTL_GROUP_XRPU	'6'		/* xrpuio.h */
+#define	IOCTL_GROUP_AGPIO	'A'		/* agpio.h */
+#define	IOCTL_GROUP_AIO		'A'		/* soundcard.h */
+#deinfe	IOCTL_GROUP_DATAACQ	'A'		/* dataacq.h */
+#define	IOCTL_GROUP_SNDCTL_COPR	'C'		/* soundcard.h */
+#define	IOCTL_GROUP_FBIO	'F'		/* fbio.h */
+#define	IOCTL_GROUP_FDCIO	'F'		/* fdcio.h */
+#define	IOCTL_GROUP_JOYSTICK	'J'		/* joytstick.h */
+#define	IOCTL_GROUP_KDCONS	'K'		/* consio.h */
+#define	IOCTL_GROUP_KBIO	'K'		/* kbio.h */
+#define	IOCTL_GROUP_MBR		'M'		/* diskmbr.h, diskpc98.h */
+#define	IOCTL_GROUP_MOUSE	'M'		/* mouse.h */
+#define	IOCTL_GROUP_MIXER	'M'		/* soundcard.h */
+#define	IOCTL_GROUP_SNDCTL_PMGR	'P'		/* soundcard.h */
+#define	IOCTL_GROUP_SNDCTL_DSP	'P'		/* soundcard.h */
+#define	IOCTL_GROUP_SNDCTL_PCM	'P'		/* soundcard.h */
+#define	IOCTL_GROUP_SNDCTL	'Q'		/* soundcard.h */
+#define	IOCTL_GROUP_AAC		'T'		/* aac_ioctl.h */
+#define	IOCTL_GROUP_TIIO	'T'		/* tiio.h */
+#define	IOCTL_GROUP_PTIO	'T'		/* ptio.h */
+#define	IOCTL_GROUP_SNOOP	'T'		/* snoop.h */
+#define	IOCTL_GROUP_SNDCTL_TMR	'T'		/* soundcard.h */
+#define	IOCTL_GROUP_WATCHDOG	'W'		/* watchdog.h */
+#define	IOCTL_GROUP_TIIO_ALT	'a'		/* tiio.h */
+#define	IOCTL_GROUP_ATA		'a'		/* ata.h */
+#define	IOCTL_GROUP_CDIO	'c'		/* cdio.h */
+#define	IOCTL_GROUP_CDRIO	'c'		/* cdrio.h */
+#define	IOCTL_GROUP_CHIO	'c'		/* chio.h */
+#define	IOCTL_GROUP_CONSIO	'c'		/* consio.h */
+#define	IOCTL_GROUP_DISK	'd'		/* disk.h, disklabel.h */
+#define	IOCTL_GROUP_DVDIO	'd'		/* dvdio.h */
+#define	IOCTL_GROUP_DIGIIO	'e'		/* digiio.h */
+#define	IOCTL_GROUP_FILIO	'f'		/* filio.h */
+#define	IOCTL_GROUP_IPMI	'i'		/* ipmi.h */
+#define	IOCTL_GROUP_IFREQ	'i'		/* sockio.h */
+#define	IOCTL_GROUP_SCREEN	'k'		/* consio.h */
+#define	IOCTL_GROUP_KBIO2	'k'		/* kbio.h */
+#define	IOCTL_GROUP_MDIO	'm'		/* mdioctl.h */
+#define	IOCTL_GROUP_MTIO	'm'		/* mtio.h */
+#define	IOCTL_GROUP_SNDCTL_MIDI	'm'		/* soundcard.h */
+#define	IOCTL_GROUP_PCIIO	'p'		/* pciio.h */
+#define	IOCTL_GROUP_ROUTE	'r'		/* sockio.h */
+#define	IOCTL_GROUP_SOCKIO	's'		/* sockio.h */
+#define	IOCTL_GROUP_TIO		't'		/* ttycom.h, ioctl_compat.h */
+#define	IOCTL_GROUP_VIDCONTROL	'v'		/* consio.h */
+
 #endif /* !_SYS_IOCCOM_H_ */