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- /*
- * Copyright (c) 1980 Regents of the University of California.
- * All rights reserved. The Berkeley software License Agreement
- * specifies the terms and conditions for redistribution.
- *
- * @(#)netdb.h 5.7 (Berkeley) 5/12/86
- */
-
- /*
- * 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).
- */
- struct hostent {
- 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_list; /* list of addresses from name server */
- #define h_addr h_addr_list[0] /* address, for backward compatiblity */
- };
-
- /*
- * Assumption here is that a network number
- * fits in 32 bits -- probably a poor one.
- */
- struct netent {
- char *n_name; /* official name of net */
- char **n_aliases; /* alias list */
- int n_addrtype; /* net address type */
- unsigned long n_net; /* network # */
- };
-
- struct servent {
- char *s_name; /* official service name */
- char **s_aliases; /* alias list */
- int s_port; /* port # */
- char *s_proto; /* protocol to use */
- };
-
- struct protoent {
- 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()
- */
-
- extern int h_errno;
-
- #define HOST_NOT_FOUND 1 /* Authoritive 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_ADDRESS 4 /* Valid host name, no address, look for MX record */
-