netdb.h
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上传日期:2007-04-14
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- /*-
- * Copyright (c) 1980, 1983, 1988 Regents of the University of California.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. All advertising materials mentioning features or use of this software
- * must display the following acknowledgement:
- * This product includes software developed by the University of
- * California, Berkeley and its contributors.
- * 4. Neither the name of the University nor the names of its contributors
- * may be used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- *
- * from: @(#)netdb.h 5.15 (Berkeley) 4/3/91
- * $Id$
- */
- #ifndef _NETDB_H_
- #define _NETDB_H_
- #include <stdio.h>
- #include <sys/types.h>
- #include <netinet/in.h>
- #define _PATH_HEQUIV "/etc/hosts.equiv"
- #define _PATH_HOSTS "/etc/hosts"
- #define _PATH_NETWORKS "/etc/networks"
- #define _PATH_PROTOCOLS "/etc/protocols"
- #define _PATH_SERVICES "/etc/services"
- #define __NETDB_MAXALIASES 35
- #define __NETDB_MAXADDRS 35
- /*
- * 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 # */
- };
- /*
- * 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 */
- #include <sys/cdefs.h>
- __BEGIN_DECLS
- void endhostent __P_((void));
- void endnetent __P_((void));
- void endprotoent __P_((void));
- void endservent __P_((void));
- struct hostent *gethostbyaddr __P_((const char *, int, int));
- struct hostent *gethostbyname __P_((const char *));
- struct hostent *gethostent __P_((void));
- struct netent *getnetbyaddr __P_((long, int)); /* u_long? */
- struct netent *getnetbyname __P_((const char *));
- struct netent *getnetent __P_((void));
- struct protoent *getprotobyname __P_((const char *));
- struct protoent *getprotobynumber __P_((int));
- struct protoent *getprotoent __P_((void));
- struct servent *getservbyname __P_((const char *, const char *));
- struct servent *getservbyport __P_((int, const char *));
- struct servent *getservent __P_((void));
- void herror __P_((const char *));
- char *hstrerror __P_((int));
- void sethostent __P_((int));
- void setnetent __P_((int));
- void setprotoent __P_((int));
- void setservent __P_((int));
- struct hostent *gethostbyaddr_r __P_((const char *, int, int,
- struct hostent *, char *, int, int *));
- struct hostent *gethostbyname_r __P_((const char *, struct hostent *, char *,
- int, int *));
- struct hostent *gethostent_r __P_((struct hostent *, char *, int, int *));
- struct netent *getnetbyaddr_r __P_((long, int, struct netent *, char *, int));
- struct netent *getnetbyname_r __P_((const char *, struct netent *, char *,
- int));
- struct netent *getnetent_r __P_((struct netent *, char *, int));
- struct protoent *getprotobyname_r __P_((const char *, struct protoent *, char *,
- int));
- struct protoent *getprotobynumber_r __P_((int, struct protoent *, char *, int));
- struct protoent *getprotoent_r __P_((struct protoent *, char *, int));
- struct servent *getservbyname_r __P_((const char *, const char *,
- struct servent *, char *, int));
- struct servent *getservbyport_r __P_((int, const char *, struct servent *,
- char *, int));
- struct servent *getservent_r __P_((struct servent *, char *, int));
- __END_DECLS
- #endif /* !_NETDB_H_ */