1/*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License, Version 1.0 only
6 * (the "License").  You may not use this file except in compliance
7 * with the License.
8 *
9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10 * or http://www.opensolaris.org/os/licensing.
11 * See the License for the specific language governing permissions
12 * and limitations under the License.
13 *
14 * When distributing Covered Code, include this CDDL HEADER in each
15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16 * If applicable, add the following below this CDDL HEADER, with the
17 * fields enclosed by brackets "[]" replaced with your own identifying
18 * information: Portions Copyright [yyyy] [name of copyright owner]
19 *
20 * CDDL HEADER END
21 */
22/*	Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T	*/
23/*	  All Rights Reserved  	*/
24
25
26#ifndef	_LISTEN_H
27#define	_LISTEN_H
28
29#pragma ident	"%Z%%M%	%I%	%E% SMI"	/* SVr4.0 1.4.3.1 */
30
31#ifdef	__cplusplus
32extern "C" {
33#endif
34
35/*
36 * listen.h:	Include file for network listener related user programs
37 *
38 */
39
40/*
41 * The NLPS (Network Listener Process Service)
42 * protocol message sent by client machines to
43 * a listener process to request a service on the listener's
44 * machine. The message is sent to "netnodename(r_nodename)"
45 * where r_nodename is the nodename (see uname(2)) of the
46 * remote host. Note that client's need not know (or care)
47 * about the details of this message.  They use the "nls_connect(3)"
48 * library routine which uses this message.
49 *
50 * msg format:
51 *
52 *		"id:low:high:service_code"
53 *
54 *		id = "NLPS"
55 *		low:high = version number of listener (see prot msg)
56 *		service_code is ASCII/decimal
57 *
58 * the following prot string can be run through sprintf with a service code
59 * to generate the message:
60 *
61 *	len = sprintf(buf,nls_prot_msg,svc_code);
62 *	t_snd(fd, buf, len, ...);
63 *
64 * See also:  listen(1), nlsrequest(3)
65 *
66 * and on the UNIX PC STARLAN NETWORK:
67 * See also:  nlsname(3), nlsconnect(3), nlsestablish(3)
68 */
69
70/*
71 * defines for compatability purposes
72 */
73
74#define	nls_prot_msg	nls_v0_d
75#define	nls_v2_msg	nls_v2_s
76
77static char *nls_v0_d = "NLPS:000:001:%d";
78static char *nls_v0_s = "NLPS:000:001:%s";
79static char *nls_v2_d = "NLPS:002:002:%d";
80static char *nls_v2_s = "NLPS:002:002:%s";
81
82#define	NLSSTART	0
83#define	NLSFORMAT	2
84#define	NLSUNKNOWN	3
85#define	NLSDISABLED	4
86
87#define	SVC_CODE_SZ	14
88
89/*
90 * Structure for handling multiple connection requests on the same stream.
91 */
92
93struct callsave {
94	struct t_call *c_cp;
95	struct callsave *c_np;
96};
97
98struct call_list {
99	struct callsave *cl_head;
100	struct callsave *cl_tail;
101};
102
103
104#define	EMPTYLIST(p)	(p->cl_head == (struct callsave *) NULL)
105
106/*
107 * Ridiculously high value for maximum number of connects per stream.
108 * Transport Provider will determine actual maximum to be used.
109 */
110
111#define	MAXCON		100
112
113/*
114 * these are names of environment variables that the listener
115 * adds to the servers environment before the exec(2).
116 *
117 * the variables should be accessed via library routines.
118 *
119 * see nlsgetcall(3X) and nlsprovider(3X).
120 */
121
122#define	NLSADDR		"NLSADDR"
123#define	NLSOPT		"NLSOPT"
124#define	NLSUDATA	"NLSUDATA"
125#define	NLSPROVIDER	"NLSPROVIDER"
126
127/*
128 * the following variables can be accessed "normally"
129 */
130
131#define	HOME		"HOME"
132#define	PATH		"PATH"
133
134#ifdef	__cplusplus
135}
136#endif
137
138#endif	/* _LISTEN_H */
139