usr/src/lib/libbc/inc/include/sys/ioccom.h

   1 /*
   2  * Copyright 2005 Sun Microsystems, Inc.  All rights reserved.
   3  * Use is subject to license terms.
   4  */
   5
   6 /*
   7  * Copyright (c) 1982, 1986 Regents of the University of California.
   8  * All rights reserved.  The Berkeley software License Agreement
   9  * specifies the terms and conditions for redistribution.
  10  */
  11
  12 #ifndef __sys_ioccom_h
  13 #define __sys_ioccom_h
  14
  15 #pragma ident   "%Z%%M% %I%     %E% SMI"
  16
  17 /*
  18  * Ioctl's have the command encoded in the lower word,
  19  * and the size of any in or out parameters in the upper
  20  * word.  The high 2 bits of the upper word are used
  21  * to encode the in/out status of the parameter; for now
  22  * we restrict parameters to at most 255 bytes.
  23  */
  24 #define _IOCPARM_MASK   0xff            /* parameters must be < 256 bytes */
  25 #define _IOC_VOID       0x20000000      /* no parameters */
  26 #define _IOC_OUT        0x40000000      /* copy out parameters */
  27 #define _IOC_IN         0x80000000      /* copy in parameters */
  28 #define _IOC_INOUT      (_IOC_IN|_IOC_OUT)
  29
  30 /* the 0x20000000 is so we can distinguish new ioctl's from old */
  31 #define _IO(x,y)        (_IOC_VOID|(x<<8)|y)
  32 #define _IOR(x,y,t)     (_IOC_OUT|((sizeof(t)&_IOCPARM_MASK)<<16)|(x<<8)|y)
  33 #define _IORN(x,y,t)    (_IOC_OUT|(((t)&_IOCPARM_MASK)<<16)|(x<<8)|y)
  34 #define _IOW(x,y,t)     (_IOC_IN|((sizeof(t)&_IOCPARM_MASK)<<16)|(x<<8)|y)
  35 #define _IOWN(x,y,t)    (_IOC_IN|(((t)&_IOCPARM_MASK)<<16)|(x<<8)|y)
  36 /* this should be _IORW, but stdio got there first */
  37 #define _IOWR(x,y,t)    (_IOC_INOUT|((sizeof(t)&_IOCPARM_MASK)<<16)|(x<<8)|y)
  38 #define _IOWRN(x,y,t)   (_IOC_INOUT|(((t)&_IOCPARM_MASK)<<16)|(x<<8)|y)
  39
  40 /*
  41  * Registry of ioctl characters, culled from system sources
  42  *
  43  * char file where defined              notes
  44  * ---- ------------------              -----
  45  *   F  sun/fbio.h
  46  *   G  sun/gpio.h
  47  *   H  vaxif/if_hy.h
  48  *   M  sundev/mcpcmd.h                 *overlap*
  49  *   M  sys/modem.h                     *overlap*
  50  *   S  sys/stropts.h
  51  *   T  sys/termio.h                    -no overlap-
  52  *   T  sys/termios.h                   -no overlap-
  53  *   V  sundev/mdreg.h
  54  *   a  vaxuba/adreg.h
  55  *   d  sun/dkio.h                      -no overlap with sys/des.h-
  56  *   d  sys/des.h                       (possible overlap)
  57  *   d  vax/dkio.h                      (possible overlap)
  58  *   d  vaxuba/rxreg.h                  (possible overlap)
  59  *   f  sys/filio.h
  60  *   g  sunwindow/win_ioctl.h           -no overlap-
  61  *   g  sunwindowdev/winioctl.c         !no manifest constant! -no overlap-
  62  *   h  sundev/hrc_common.h
  63  *   i  sys/sockio.h                    *overlap*
  64  *   i  vaxuba/ikreg.h                  *overlap*
  65  *   k  sundev/kbio.h
  66  *   m  sundev/msio.h                   (possible overlap)
  67  *   m  sundev/msreg.h                  (possible overlap)
  68  *   m  sys/mtio.h                      (possible overlap)
  69  *   n  sun/ndio.h
  70  *   p  net/nit_buf.h                   (possible overlap)
  71  *   p  net/nit_if.h                    (possible overlap)
  72  *   p  net/nit_pf.h                    (possible overlap)
  73  *   p  sundev/fpareg.h                 (possible overlap)
  74  *   p  sys/sockio.h                    (possible overlap)
  75  *   p  vaxuba/psreg.h                  (possible overlap)
  76  *   q  sun/sqz.h
  77  *   r  sys/sockio.h
  78  *   s  sys/sockio.h
  79  *   t  sys/ttold.h                     (possible overlap)
  80  *   t  sys/ttycom.h                    (possible overlap)
  81  *   v  sundev/vuid_event.h             *overlap*
  82  *   v  sys/vcmd.h                      *overlap*
  83  *
  84  * End of Registry
  85  */
  86
  87 #endif /* !__sys_ioccom_h */