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 #ifdef __cplusplus 30 extern "C" { 31 #endif 32 33 /* 34 * listen.h: Include file for network listener related user programs 35 * 36 */ 37 38 /* 39 * The NLPS (Network Listener Process Service) 40 * protocol message sent by client machines to 41 * a listener process to request a service on the listener's 42 * machine. The message is sent to "netnodename(r_nodename)" 43 * where r_nodename is the nodename (see uname(2)) of the 44 * remote host. Note that client's need not know (or care) 45 * about the details of this message. They use the "nls_connect(3)" 46 * library routine which uses this message. 47 * 48 * msg format: 49 * 50 * "id:low:high:service_code" 51 * 52 * id = "NLPS" 53 * low:high = version number of listener (see prot msg) 54 * service_code is ASCII/decimal 55 * 56 * the following prot string can be run through sprintf with a service code 57 * to generate the message: 58 * 59 * len = sprintf(buf,nls_prot_msg,svc_code); 60 * t_snd(fd, buf, len, ...); 61 * 62 * See also: listen(1), nlsrequest(3) 63 * 64 * and on the UNIX PC STARLAN NETWORK: 65 * See also: nlsname(3), nlsconnect(3), nlsestablish(3) 66 */ 67 68 /* 69 * defines for compatability purposes 70 */ 71 72 #define nls_prot_msg nls_v0_d 73 #define nls_v2_msg nls_v2_s 74 75 static char *nls_v0_d = "NLPS:000:001:%d"; 76 static char *nls_v0_s = "NLPS:000:001:%s"; 77 static char *nls_v2_d = "NLPS:002:002:%d"; 78 static char *nls_v2_s = "NLPS:002:002:%s"; 79 80 #define NLSSTART 0 81 #define NLSFORMAT 2 82 #define NLSUNKNOWN 3 83 #define NLSDISABLED 4 84 85 #define SVC_CODE_SZ 14 86 87 /* 88 * Structure for handling multiple connection requests on the same stream. 89 */ 90 91 struct callsave { 92 struct t_call *c_cp; 93 struct callsave *c_np; 94 }; 95 96 struct call_list { 97 struct callsave *cl_head; 98 struct callsave *cl_tail; 99 }; 100 101 102 #define EMPTYLIST(p) (p->cl_head == (struct callsave *)NULL) 103 104 /* 105 * Ridiculously high value for maximum number of connects per stream. 106 * Transport Provider will determine actual maximum to be used. 107 */ 108 109 #define MAXCON 100 110 111 /* 112 * these are names of environment variables that the listener 113 * adds to the servers environment before the exec(2). 114 * 115 * the variables should be accessed via library routines. 116 * 117 * see nlsgetcall(3NSL) and nlsprovider(3NSL). 118 */ 119 120 #define NLSADDR "NLSADDR" 121 #define NLSOPT "NLSOPT" 122 #define NLSUDATA "NLSUDATA" 123 #define NLSPROVIDER "NLSPROVIDER" 124 125 /* 126 * the following variables can be accessed "normally" 127 */ 128 129 #define HOME "HOME" 130 #define PATH "PATH" 131 132 #ifdef __cplusplus 133 } 134 #endif 135 136 #endif /* _LISTEN_H */ 137