sys/sys/snoop.h

   1 /*
   2  * Copyright (c) 1995 Ugen J.S.Antsilevich
   3  *
   4  * Redistribution and use in source forms, with and without modification,
   5  * are permitted provided that this entire comment appears intact.
   6  *
   7  * Redistribution in binary form may occur without any restrictions.
   8  * Obviously, it would be nice if you gave credit where credit is due
   9  * but requiring it would be too onerous.
  10  *
  11  * This software is provided ``AS IS'' without any warranties of any kind.
  12  *
  13  * Snoop stuff.
  14  *
  15  * $FreeBSD: src/sys/sys/snoop.h,v 1.14.2.1 2002/03/11 01:23:05 dd Exp $
  16  */
  17
  18 #ifndef _SYS_SNOOP_H_
  19 #define _SYS_SNOOP_H_
  20
  21 #include <sys/ioccom.h>
  22
  23 /*
  24  * These are snoop io controls
  25  * SNPSTTY accepts 'struct snptty' as input.
  26  * If ever type or  unit set to -1,snoop device
  27  * detached from its current tty.
  28  */
  29 #define SNPSTTY       _IOW('T', 90, dev_t)
  30 #define SNPGTTY       _IOR('T', 89, dev_t)
  31
  32 /*
  33  * These values would be returned by FIONREAD ioctl
  34  * instead of number of characters in buffer in case
  35  * of specific errors.
  36  */
  37 #define SNP_OFLOW               -1
  38 #define SNP_TTYCLOSE            -2
  39 #define SNP_DETACH              -3
  40
  41 #endif /* !_SYS_SNOOP_H_ */