usr/src/include/netdb.h

/*
 * Copyright (c) 1980, 1983, 1988 Regents of the University of California.
 * All rights reserved.
 *
 * 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 (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).
 */
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()
 * (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 */
Commit	Line	Data
	1	/*
	2	* Copyright (c) 1980, 1983, 1988 Regents of the University of California.
	3	* All rights reserved.
	4	*
	5	* Redistribution and use in source and binary forms are permitted
	6	* provided that the above copyright notice and this paragraph are
	7	* duplicated in all such forms and that any documentation,
	8	* advertising materials, and other materials related to such
	9	* distribution and use acknowledge that the software was developed
	10	* by the University of California, Berkeley. The name of the
	11	* University may not be used to endorse or promote products derived
	12	* from this software without specific prior written permission.
	13	* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
	14	* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
	15	* WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
	16	*
	17	* @(#)netdb.h 5.10 (Berkeley) %G%
	18	*/
	19
	20	/*
	21	* Structures returned by network
	22	* data base library. All addresses
	23	* are supplied in host order, and
	24	* returned in network order (suitable
	25	* for use in system calls).
	26	*/
	27	struct hostent {
	28	char h_name; / official name of host */
	29	char *h_aliases; / alias list */
	30	int h_addrtype; /* host address type */
	31	int h_length; /* length of address */
	32	char *h_addr_list; / list of addresses from name server */
	33	#define h_addr h_addr_list[0] /* address, for backward compatiblity */
	34	};
	35
	36	/*
	37	* Assumption here is that a network number
	38	* fits in 32 bits -- probably a poor one.
	39	*/
	40	struct netent {
	41	char n_name; / official name of net */
	42	char *n_aliases; / alias list */
	43	int n_addrtype; /* net address type */
	44	unsigned long n_net; /* network # */
	45	};
	46
	47	struct servent {
	48	char s_name; / official service name */
	49	char *s_aliases; / alias list */
	50	int s_port; /* port # */
	51	char s_proto; / protocol to use */
	52	};
	53
	54	struct protoent {
	55	char p_name; / official protocol name */
	56	char *p_aliases; / alias list */
	57	int p_proto; /* protocol # */
	58	};
	59
	60	struct hostent gethostbyname(), gethostbyaddr(), *gethostent();
	61	struct netent getnetbyname(), getnetbyaddr(), *getnetent();
	62	struct servent getservbyname(), getservbyport(), *getservent();
	63	struct protoent getprotobyname(), getprotobynumber(), *getprotoent();
	64
	65	/*
	66	* Error return codes from gethostbyname() and gethostbyaddr()
	67	* (left in extern int h_errno).
	68	*/
	69
	70	#define HOST_NOT_FOUND 1 /* Authoritative Answer Host not found */
	71	#define TRY_AGAIN 2 /* Non-Authoritive Host not found, or SERVERFAIL */
	72	#define NO_RECOVERY 3 /* Non recoverable errors, FORMERR, REFUSED, NOTIMP */
	73	#define NO_DATA 4 /* Valid name, no data record of requested type */
	74	#define NO_ADDRESS NO_DATA /* no address, look for MX record */