freebsd-nq/sys/sys/snoop.h
Thomas Moestl 20207b60a8 Declare the snp ioctl()s to work on udev_t, since that is what they
really do and dev_t is defined differently in kernel and userland.
Return a correctly formed udev from SNPGTTY.

Reviewed by:	dd
2002-11-11 10:45:31 +00:00

46 lines
1.1 KiB
C

/*
* Copyright (c) 1995 Ugen J.S.Antsilevich
*
* Redistribution and use in source forms, with and without modification,
* are permitted provided that this entire comment appears intact.
*
* Redistribution in binary form may occur without any restrictions.
* Obviously, it would be nice if you gave credit where credit is due
* but requiring it would be too onerous.
*
* This software is provided ``AS IS'' without any warranties of any kind.
*
* Snoop stuff.
*
* $FreeBSD$
*/
#ifndef _SYS_SNOOP_H_
#define _SYS_SNOOP_H_
#ifndef _KERNEL
#include <sys/types.h>
#endif
#include <sys/ioccom.h>
/*
* These are snoop io controls
* SNPSTTY accepts 'struct snptty' as input.
* If ever type or unit set to -1,snoop device
* detached from its current tty.
*/
#define SNPSTTY _IOW('T', 90, udev_t)
#define SNPGTTY _IOR('T', 89, udev_t)
/*
* These values would be returned by FIONREAD ioctl
* instead of number of characters in buffer in case
* of specific errors.
*/
#define SNP_OFLOW -1
#define SNP_TTYCLOSE -2
#define SNP_DETACH -3
#endif /* !_SYS_SNOOP_H_ */