snoop.h revision 106767
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: head/sys/sys/snoop.h 106767 2002-11-11 10:45:31Z tmm $ 16 */ 17 18#ifndef _SYS_SNOOP_H_ 19#define _SYS_SNOOP_H_ 20 21#ifndef _KERNEL 22#include <sys/types.h> 23#endif 24#include <sys/ioccom.h> 25 26/* 27 * These are snoop io controls 28 * SNPSTTY accepts 'struct snptty' as input. 29 * If ever type or unit set to -1,snoop device 30 * detached from its current tty. 31 */ 32 33#define SNPSTTY _IOW('T', 90, udev_t) 34#define SNPGTTY _IOR('T', 89, udev_t) 35 36/* 37 * These values would be returned by FIONREAD ioctl 38 * instead of number of characters in buffer in case 39 * of specific errors. 40 */ 41#define SNP_OFLOW -1 42#define SNP_TTYCLOSE -2 43#define SNP_DETACH -3 44 45#endif /* !_SYS_SNOOP_H_ */ 46