* Copyright (c) 1980, 1983, 1988 Regents of the University of California.
* Redistribution and use in source and binary forms are permitted
* provided that the above copyright notice and this paragraph are
* duplicated in all such forms and that any documentation,
* advertising materials, and other materials related to such
* distribution and use acknowledge that the software was developed
* by the University of California, Berkeley. The name of the
* University may not be used to endorse or promote products derived
* from this software without specific prior written permission.
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
* WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
* @(#)netdb.h 5.10.1.1 (Berkeley) %G%
* Structures returned by network
* data base library. All addresses
* are supplied in host order, and
* returned in network order (suitable
* for use in system calls).
char *h_name
; /* official name of host */
char **h_aliases
; /* alias list */
int h_addrtype
; /* host address type */
int h_length
; /* length of address */
char *h_addr
; /* address */
* Assumption here is that a network number
* fits in 32 bits -- probably a poor one.
char *n_name
; /* official name of net */
char **n_aliases
; /* alias list */
int n_addrtype
; /* net address type */
unsigned long n_net
; /* network # */
char *s_name
; /* official service name */
char **s_aliases
; /* alias list */
char *s_proto
; /* protocol to use */
char *p_name
; /* official protocol name */
char **p_aliases
; /* alias list */
int p_proto
; /* protocol # */
struct hostent
*gethostbyname(), *gethostbyaddr(), *gethostent();
struct netent
*getnetbyname(), *getnetbyaddr(), *getnetent();
struct servent
*getservbyname(), *getservbyport(), *getservent();
struct protoent
*getprotobyname(), *getprotobynumber(), *getprotoent();
* Error return codes from gethostbyname() and gethostbyaddr()
* (left in extern int h_errno).
#define HOST_NOT_FOUND 1 /* Authoritative Answer Host not found */
#define TRY_AGAIN 2 /* Non-Authoritive Host not found, or SERVERFAIL */
#define NO_RECOVERY 3 /* Non recoverable errors, FORMERR, REFUSED, NOTIMP */
#define NO_DATA 4 /* Valid name, no data record of requested type */
#define NO_ADDRESS NO_DATA /* no address, look for MX record */