FreeBSD/Linux Kernel Cross Reference
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 * $FreeBSD$
16 */
17
18 #ifndef _SYS_SNOOP_H_
19 #define _SYS_SNOOP_H_
20
21 #include <sys/ioccom.h>
22
23 /*
24 * Theese 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
30 #define SNPSTTY _IOW('T', 90, dev_t)
31 #define SNPGTTY _IOR('T', 89, dev_t)
32
33 /*
34 * Theese values would be returned by FIONREAD ioctl
35 * instead of number of characters in buffer in case
36 * of specific errors.
37 */
38 #define SNP_OFLOW -1
39 #define SNP_TTYCLOSE -2
40 #define SNP_DETACH -3
41
42 #endif /* !_SYS_SNOOP_H_ */
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