nrelease - fix/improve livecd
[dragonfly.git] / sys / sys / snoop.h
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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/*
8a78d241 24 * These are snoop io controls
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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 */
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29#define SNPSTTY _IOW('T', 90, dev_t)
30#define SNPGTTY _IOR('T', 89, dev_t)
31
32/*
8a78d241 33 * These values would be returned by FIONREAD ioctl
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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_ */