netdb.h revision 8858
1/*- 2 * Copyright (c) 1980, 1983, 1988, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * This product includes software developed by the University of 16 * California, Berkeley and its contributors. 17 * 4. Neither the name of the University nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 * 33 * @(#)netdb.h 8.1 (Berkeley) 6/2/93 34 * $Id: netdb.h,v 1.1.1.1 1994/05/24 09:57:18 rgrimes Exp $ 35 * - 36 * Portions Copyright (c) 1993 by Digital Equipment Corporation. 37 * 38 * Permission to use, copy, modify, and distribute this software for any 39 * purpose with or without fee is hereby granted, provided that the above 40 * copyright notice and this permission notice appear in all copies, and that 41 * the name of Digital Equipment Corporation not be used in advertising or 42 * publicity pertaining to distribution of the document or software without 43 * specific, written prior permission. 44 * 45 * THE SOFTWARE IS PROVIDED "AS IS" AND DIGITAL EQUIPMENT CORP. DISCLAIMS ALL 46 * WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES 47 * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL DIGITAL EQUIPMENT 48 * CORPORATION BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL 49 * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR 50 * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS 51 * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS 52 * SOFTWARE. 53 * - 54 * --Copyright-- 55 */ 56 57#ifndef _NETDB_H_ 58#define _NETDB_H_ 59 60#define _PATH_HEQUIV "/etc/hosts.equiv" 61#define _PATH_HOSTS "/etc/hosts" 62#define _PATH_NETWORKS "/etc/networks" 63#define _PATH_PROTOCOLS "/etc/protocols" 64#define _PATH_SERVICES "/etc/services" 65 66/* 67 * Structures returned by network data base library. All addresses are 68 * supplied in host order, and returned in network order (suitable for 69 * use in system calls). 70 */ 71struct hostent { 72 char *h_name; /* official name of host */ 73 char **h_aliases; /* alias list */ 74 int h_addrtype; /* host address type */ 75 int h_length; /* length of address */ 76 char **h_addr_list; /* list of addresses from name server */ 77#define h_addr h_addr_list[0] /* address, for backward compatiblity */ 78}; 79 80/* 81 * Assumption here is that a network number 82 * fits in an unsigned long -- probably a poor one. 83 */ 84struct netent { 85 char *n_name; /* official name of net */ 86 char **n_aliases; /* alias list */ 87 int n_addrtype; /* net address type */ 88 unsigned long n_net; /* network # */ 89}; 90 91struct servent { 92 char *s_name; /* official service name */ 93 char **s_aliases; /* alias list */ 94 int s_port; /* port # */ 95 char *s_proto; /* protocol to use */ 96}; 97 98struct protoent { 99 char *p_name; /* official protocol name */ 100 char **p_aliases; /* alias list */ 101 int p_proto; /* protocol # */ 102}; 103 104/* 105 * Error return codes from gethostbyname() and gethostbyaddr() 106 * (left in extern int h_errno). 107 */ 108 109#define HOST_NOT_FOUND 1 /* Authoritative Answer Host not found */ 110#define TRY_AGAIN 2 /* Non-Authoritive Host not found, or SERVERFAIL */ 111#define NO_RECOVERY 3 /* Non recoverable errors, FORMERR, REFUSED, NOTIMP */ 112#define NO_DATA 4 /* Valid name, no data record of requested type */ 113#define NO_ADDRESS NO_DATA /* no address, look for MX record */ 114 115#include <sys/cdefs.h> 116 117__BEGIN_DECLS 118void endhostent __P((void)); 119void endnetent __P((void)); 120void endprotoent __P((void)); 121void endservent __P((void)); 122struct hostent *gethostbyaddr __P((const char *, int, int)); 123struct hostent *gethostbyname __P((const char *)); 124struct hostent *gethostent __P((void)); 125struct netent *getnetbyaddr __P((long, int)); /* u_long? */ 126struct netent *getnetbyname __P((const char *)); 127struct netent *getnetent __P((void)); 128struct protoent *getprotobyname __P((const char *)); 129struct protoent *getprotobynumber __P((int)); 130struct protoent *getprotoent __P((void)); 131struct servent *getservbyname __P((const char *, const char *)); 132struct servent *getservbyport __P((int, const char *)); 133struct servent *getservent __P((void)); 134void herror __P((const char *)); 135char *hstrerror __P((int)); 136void sethostent __P((int)); 137/* void sethostfile __P((const char *)); */ 138void setnetent __P((int)); 139void setprotoent __P((int)); 140void setservent __P((int)); 141__END_DECLS 142 143#endif /* !_NETDB_H_ */ 144