5 This header file is an extension to ANSI/POSIX
8 #pragma lib "/$M/lib/ape/libbsd.a"
11 * Copyright (c) 1980, 1983, 1988 Regents of the University of California.
12 * All rights reserved.
14 * Redistribution and use in source and binary forms are permitted
15 * provided that: (1) source distributions retain this entire copyright
16 * notice and comment, and (2) distributions including binaries display
17 * the following acknowledgement: ``This product includes software
18 * developed by the University of California, Berkeley and its contributors''
19 * in the documentation or other materials provided with the distribution
20 * and in all advertising materials mentioning features or use of this
21 * software. Neither the name of the University nor the names of its
22 * contributors may be used to endorse or promote products derived
23 * from this software without specific prior written permission.
24 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
25 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
26 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
28 * @(#)netdb.h 5.11 (Berkeley) 5/21/90
36 * Structures returned by network data base library. All addresses are
37 * supplied in host order, and returned in network order (suitable for
38 * use in system calls).
41 char *h_name; /* official name of host */
42 char **h_aliases; /* alias list */
43 int h_addrtype; /* host address type */
44 int h_length; /* length of address */
45 char **h_addr_list; /* list of addresses from name server */
46 #define h_addr h_addr_list[0] /* address, for backward compatiblity */
50 * Assumption here is that a network number
51 * fits in 32 bits -- probably a poor one.
54 char *n_name; /* official name of net */
55 char **n_aliases; /* alias list */
56 int n_addrtype; /* net address type */
57 unsigned long n_net; /* network # */
61 char *s_name; /* official service name */
62 char **s_aliases; /* alias list */
63 int s_port; /* port # */
64 char *s_proto; /* protocol to use */
68 char *p_name; /* official protocol name */
69 char **p_aliases; /* alias list */
70 int p_proto; /* protocol # */
75 char *r_name; /* name of server for this rpc program */
76 char **r_aliases; /* alias list */
77 int r_number; /* rpc program number */
80 extern struct hostent *gethostbyname(const char *),
81 *gethostbyaddr(const void *, int, int),
83 extern struct netent *getnetbyname(const char *),
84 *getnetbyaddr(long, int),
86 extern struct servent *getservbyname(const char *, const char *),
87 *getservbyport(int, const char *),
89 extern struct protoent *getprotobyname(const char *),
90 *getprotobynumber(int),
92 extern struct rpcent *getrpcbyname(const char *),
95 extern void sethostent(int), endhostent(void),
96 setnetent(int), endnetent(void),
97 setservent(int), endservent(void),
98 setprotoent(int), endprotoent(void),
99 setrpcent(int), endrpcent(void);
102 * Error return codes from gethostbyname() and gethostbyaddr()
103 * (left in extern int h_errno).
106 extern void herror(const char *);
107 extern char *hstrerror(int);
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 */
115 #define __HOST_SVC_NOT_AVAIL 99 /* libc internal use only */
118 int ai_flags; /* Input flags. */
119 int ai_family; /* Protocol family for socket. */
120 int ai_socktype; /* Socket type. */
121 int ai_protocol; /* Protocol for socket. */
122 int ai_addrlen; /* Length of socket address. */
123 struct sockaddr *ai_addr; /* Socket address for socket. */
124 char *ai_canonname; /* Canonical name for service location. */
125 struct addrinfo *ai_next; /* Pointer to next in list. */
128 extern int getaddrinfo(char *, char *, struct addrinfo *, struct addrinfo **);
129 extern void freeaddrinfo(struct addrinfo *);
130 extern int getnameinfo(struct sockaddr *, int, char *, int, char *, int, unsigned int);
131 extern char *gai_strerror(int);
133 /* Possible values for `ai_flags' field in `addrinfo' structure. */
134 #define AI_PASSIVE 0x0001 /* Socket address is intended for `bind'. */
135 #define AI_CANONNAME 0x0002 /* Request for canonical name. */
136 #define AI_NUMERICHOST 0x0004 /* Don't use name resolution. */
137 #define AI_V4MAPPED 0x0008 /* IPv4 mapped addresses are acceptable. */
138 #define AI_ALL 0x0010 /* Return IPv4 mapped and IPv6 addresses. */
139 #define AI_ADDRCONFIG 0x0020 /* Use configuration of this host to choose returned address type.. */
140 #define AI_NUMERICSERV 0x0400 /* Don't use name resolution. */
142 /* getnameinfo flags */
143 #define NI_NOFQDN 0x0001 /* Only the nodename portion of the FQDN is returned for local hosts. */
144 #define NI_NUMERICHOST 0x0002 /* The numeric form of the node's address is returned instead of its name. */
145 #define NI_NAMEREQD 0x0004 /* Return an error if the node's name cannot be located in the database. */
146 #define NI_NUMERICSERV 0x0008 /* The numeric form of the service address is returned instead of its name. */
147 #define NI_NUMERICSCOPE 0x0010 /* For IPv6 addresses, the numeric form of the scope identifier is returned
148 instead of its name. */
149 #define NI_DGRAM 0x0020 /* Indicates that the service is a datagram service (SOCK_DGRAM). */
151 /* Error values for `getaddrinfo' and `getnameinfo' functions. */
152 #define EAI_BADFLAGS -1 /* Invalid value for `ai_flags' field */
153 #define EAI_NONAME -2 /* NAME or SERVICE is unknown */
154 #define EAI_AGAIN -3 /* Temporary failure in name resolution */
155 #define EAI_FAIL -4 /* Non-recoverable failure in name resolution */
156 #define EAI_NODATA -5 /* No address associated with NAME */
157 #define EAI_FAMILY -6 /* `ai_family' not supported */
158 #define EAI_SOCKTYPE -7 /* `ai_socktype' not supported */
159 #define EAI_SERVICE -8 /* SERVICE not supported for `ai_socktype' */
160 #define EAI_ADDRFAMILY -9 /* Address family for NAME not supported */
161 #define EAI_MEMORY -10 /* Memory allocation failure */
162 #define EAI_SYSTEM -11 /* System error returned in `errno' */
163 #define EAI_OVERFLOW -12 /* Argument buffer overflow */
169 #endif /* !__NETDB_H__ */