snoop.h revision 225736 
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: stable/9/sys/sys/snoop.h 150298 2005-09-18 19:23:35Z cognet $
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 a file descriptor as input.
29 */
30
31#define SNPSTTY       _IOW('T', 90, int)
32#define SNPGTTY       _IOR('T', 89, dev_t)
33
34/*
35 * These values would be returned by FIONREAD ioctl
36 * instead of number of characters in buffer in case
37 * of specific errors.
38 */
39#define SNP_OFLOW		-1
40#define SNP_TTYCLOSE		-2
41#define SNP_DETACH		-3
42
43#endif /* !_SYS_SNOOP_H_ */
44