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-rw-r--r--include/netdb.h693
1 files changed, 497 insertions, 196 deletions
diff --git a/include/netdb.h b/include/netdb.h
index 84191b68d..aea6e0050 100644
--- a/include/netdb.h
+++ b/include/netdb.h
@@ -1,221 +1,522 @@
-/*-
- * Copyright (c) 1980, 1983, 1988, 1993
- * The 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.
- *
- * @(#)netdb.h 8.1 (Berkeley) 6/2/93
- * netdb.h,v 1.4 1995/08/14 04:05:04 hjl Exp
- * -
- * Portions Copyright (c) 1993 by Digital Equipment Corporation.
- *
- * Permission to use, copy, modify and distribute this software for any
- * purpose with or without fee is hereby granted, provided that the above
- * copyright notice and this permission notice appear in all copies, and that
- * the name of Digital Equipment Corporation not be used in advertising or
- * publicity pertaining to distribution of the document or software without
- * specific, written prior permission.
- *
- * THE SOFTWARE IS PROVIDED "AS IS" AND DIGITAL EQUIPMENT CORP. DISCLAIMS ALL
- * WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES
- * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL DIGITAL EQUIPMENT
- * CORPORATION BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
- * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
- * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
- * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
- * SOFTWARE.
- * -
- * --Copyright--
- */
-
-#ifndef _NETDB_H_
-#define _NETDB_H_
-
-#if defined(_POSIX_THREAD_SAFE_FUNCTIONS) || defined(_REENTRANT)
-#include <stdio.h>
+/* Copyright (C) 1996,1997,1998,1999,2000,2001 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, write to the Free
+ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+ 02111-1307 USA. */
+
+/* All data returned by the network data base library are supplied in
+ host order and returned in network order (suitable for use in
+ system calls). */
+
+#ifndef _NETDB_H
+#define _NETDB_H 1
+
+#include <features.h>
+
#include <netinet/in.h>
+#include <stdint.h>
+#ifdef __USE_MISC
+/* This is necessary to make this include file properly replace the
+ Sun version. */
+# include <rpc/netdb.h>
+#endif
+
+#ifdef __USE_GNU
+# define __need_sigevent_t
+# include <bits/siginfo.h>
+# define __need_timespec
+# include <time.h>
+#endif
+
+#include <bits/netdb.h>
+
+/* Absolute file name for network data base files. */
+#define _PATH_HEQUIV "/etc/hosts.equiv"
+#define _PATH_HOSTS "/etc/hosts"
+#define _PATH_NETWORKS "/etc/networks"
+#define _PATH_NSSWITCH_CONF "/etc/nsswitch.conf"
+#define _PATH_PROTOCOLS "/etc/protocols"
+#define _PATH_SERVICES "/etc/services"
+
+
+__BEGIN_DECLS
+
+/* Error status for non-reentrant lookup functions.
+ * NOTE: uClibc reuses errno for h_errno. */
+#include <errno.h>
+#define h_errno errno
+
+
+#if 0
+/* Function to get address of global `h_errno' variable. */
+extern int *__h_errno_location (void) __THROW __attribute__ ((__const__));
+
+#ifdef _LIBC
+# ifdef _LIBC_REENTRANT
+static inline int
+__set_h_errno (int __err)
+{
+ return *__h_errno_location () = __err;
+}
+# else
+# define __set_h_errno(x) (h_errno = (x))
+# endif /* _LIBC_REENTRANT */
+#endif /* _LIBC */
+
+
+#if !defined _LIBC || defined _LIBC_REENTRANT
+/* Use a macro to access always the thread specific `h_errno' variable. */
+# define h_errno (*__h_errno_location ())
+#endif
#endif
-#include <paths.h>
-
-#define __PATH_ETC_INET "/etc"
-#define _PATH_HEQUIV __PATH_ETC_INET"/hosts.equiv"
-#define _PATH_HOSTS __PATH_ETC_INET"/hosts"
-#define _PATH_NETWORKS __PATH_ETC_INET"/networks"
-#define _PATH_PROTOCOLS __PATH_ETC_INET"/protocols"
-#define _PATH_SERVICES __PATH_ETC_INET"/services"
-#define _PATH_RESCONF __PATH_ETC_INET"/resolv.conf"
-#define _PATH_RPC __PATH_ETC_INET"/rpc"
-
-
-/*
- * 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 */
+
+/* Possible values left in `h_errno'. */
+#define NETDB_INTERNAL -1 /* See errno. */
+#define NETDB_SUCCESS 0 /* No problem. */
+#define HOST_NOT_FOUND 1 /* Authoritative Answer Host not found. */
+#define TRY_AGAIN 2 /* Non-Authoritative 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. */
+
+#ifdef __USE_XOPEN2K
+/* Highest reserved Internet port number. */
+# define IPPORT_RESERVED 1024
+#endif
+
+#ifdef __USE_GNU
+/* Scope delimiter for getaddrinfo(), getnameinfo(). */
+# define SCOPE_DELIMITER '%'
+#endif
+
+/* Print error indicated by `h_errno' variable on standard error. STR
+ if non-null is printed before the error string. */
+extern void herror (__const char *__str) __THROW;
+
+/* Return string associated with error ERR_NUM. */
+extern __const char *hstrerror (int __err_num) __THROW;
+
+
+
+/* Description of data base entry for a single host. */
+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 compatibility. */
};
-/*
- * Assumption here is that a network number
- * fits in an unsigned long -- 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 # */
+/* Open host data base files and mark them as staying open even after
+ a later search if STAY_OPEN is non-zero. */
+extern void sethostent (int __stay_open) __THROW;
+
+/* Close host data base files and clear `stay open' flag. */
+extern void endhostent (void) __THROW;
+
+/* Get next entry from host data base file. Open data base if
+ necessary. */
+extern struct hostent *gethostent (void) __THROW;
+
+/* Return entry from host data base which address match ADDR with
+ length LEN and type TYPE. */
+extern struct hostent *gethostbyaddr (__const void *__addr, __socklen_t __len,
+ int __type) __THROW;
+
+/* Return entry from host data base for host with NAME. */
+extern struct hostent *gethostbyname (__const char *__name) __THROW;
+
+#ifdef __USE_MISC
+/* Return entry from host data base for host with NAME. AF must be
+ set to the address type which is `AF_INET' for IPv4 or `AF_INET6'
+ for IPv6. */
+extern struct hostent *gethostbyname2 (__const char *__name, int __af) __THROW;
+
+/* Reentrant versions of the functions above. The additional
+ arguments specify a buffer of BUFLEN starting at BUF. The last
+ argument is a pointer to a variable which gets the value which
+ would be stored in the global variable `herrno' by the
+ non-reentrant functions. */
+extern int gethostent_r (struct hostent *__restrict __result_buf,
+ char *__restrict __buf, size_t __buflen,
+ struct hostent **__restrict __result,
+ int *__restrict __h_errnop) __THROW;
+
+extern int gethostbyaddr_r (__const void *__restrict __addr, __socklen_t __len,
+ int __type,
+ struct hostent *__restrict __result_buf,
+ char *__restrict __buf, size_t __buflen,
+ struct hostent **__restrict __result,
+ int *__restrict __h_errnop) __THROW;
+
+extern int gethostbyname_r (__const char *__restrict __name,
+ struct hostent *__restrict __result_buf,
+ char *__restrict __buf, size_t __buflen,
+ struct hostent **__restrict __result,
+ int *__restrict __h_errnop) __THROW;
+
+extern int gethostbyname2_r (__const char *__restrict __name, int __af,
+ struct hostent *__restrict __result_buf,
+ char *__restrict __buf, size_t __buflen,
+ struct hostent **__restrict __result,
+ int *__restrict __h_errnop) __THROW;
+#endif /* misc */
+
+
+/* Open network data base files and mark them as staying open even
+ after a later search if STAY_OPEN is non-zero. */
+extern void setnetent (int __stay_open) __THROW;
+
+/* Close network data base files and clear `stay open' flag. */
+extern void endnetent (void) __THROW;
+
+/* Get next entry from network data base file. Open data base if
+ necessary. */
+extern struct netent *getnetent (void) __THROW;
+
+/* Return entry from network data base which address match NET and
+ type TYPE. */
+extern struct netent *getnetbyaddr (uint32_t __net, int __type)
+ __THROW;
+
+/* Return entry from network data base for network with NAME. */
+extern struct netent *getnetbyname (__const char *__name) __THROW;
+
+#ifdef __USE_MISC
+/* Reentrant versions of the functions above. The additional
+ arguments specify a buffer of BUFLEN starting at BUF. The last
+ argument is a pointer to a variable which gets the value which
+ would be stored in the global variable `herrno' by the
+ non-reentrant functions. */
+extern int getnetent_r (struct netent *__restrict __result_buf,
+ char *__restrict __buf, size_t __buflen,
+ struct netent **__restrict __result,
+ int *__restrict __h_errnop) __THROW;
+
+extern int getnetbyaddr_r (uint32_t __net, int __type,
+ struct netent *__restrict __result_buf,
+ char *__restrict __buf, size_t __buflen,
+ struct netent **__restrict __result,
+ int *__restrict __h_errnop) __THROW;
+
+extern int getnetbyname_r (__const char *__restrict __name,
+ struct netent *__restrict __result_buf,
+ char *__restrict __buf, size_t __buflen,
+ struct netent **__restrict __result,
+ int *__restrict __h_errnop) __THROW;
+#endif /* misc */
+
+
+/* Description of data base entry for a single service. */
+struct servent
+{
+ char *s_name; /* Official service name. */
+ char **s_aliases; /* Alias list. */
+ int s_port; /* Port number. */
+ char *s_proto; /* Protocol to use. */
};
-struct servent {
- char *s_name; /* official service name */
- char **s_aliases; /* alias list */
- int s_port; /* port # */
- char *s_proto; /* protocol to use */
+/* Open service data base files and mark them as staying open even
+ after a later search if STAY_OPEN is non-zero. */
+extern void setservent (int __stay_open) __THROW;
+
+/* Close service data base files and clear `stay open' flag. */
+extern void endservent (void) __THROW;
+
+/* Get next entry from service data base file. Open data base if
+ necessary. */
+extern struct servent *getservent (void) __THROW;
+
+/* Return entry from network data base for network with NAME and
+ protocol PROTO. */
+extern struct servent *getservbyname (__const char *__name,
+ __const char *__proto) __THROW;
+
+/* Return entry from service data base which matches port PORT and
+ protocol PROTO. */
+extern struct servent *getservbyport (int __port, __const char *__proto)
+ __THROW;
+
+
+#ifdef __USE_MISC
+/* Reentrant versions of the functions above. The additional
+ arguments specify a buffer of BUFLEN starting at BUF. */
+extern int getservent_r (struct servent *__restrict __result_buf,
+ char *__restrict __buf, size_t __buflen,
+ struct servent **__restrict __result) __THROW;
+
+extern int getservbyname_r (__const char *__restrict __name,
+ __const char *__restrict __proto,
+ struct servent *__restrict __result_buf,
+ char *__restrict __buf, size_t __buflen,
+ struct servent **__restrict __result) __THROW;
+
+extern int getservbyport_r (int __port, __const char *__restrict __proto,
+ struct servent *__restrict __result_buf,
+ char *__restrict __buf, size_t __buflen,
+ struct servent **__restrict __result) __THROW;
+#endif /* misc */
+
+
+/* Description of data base entry for a single service. */
+struct protoent
+{
+ char *p_name; /* Official protocol name. */
+ char **p_aliases; /* Alias list. */
+ int p_proto; /* Protocol number. */
};
-struct protoent {
- char *p_name; /* official protocol name */
- char **p_aliases; /* alias list */
- int p_proto; /* protocol # */
+/* Open protocol data base files and mark them as staying open even
+ after a later search if STAY_OPEN is non-zero. */
+extern void setprotoent (int __stay_open) __THROW;
+
+/* Close protocol data base files and clear `stay open' flag. */
+extern void endprotoent (void) __THROW;
+
+/* Get next entry from protocol data base file. Open data base if
+ necessary. */
+extern struct protoent *getprotoent (void) __THROW;
+
+/* Return entry from protocol data base for network with NAME. */
+extern struct protoent *getprotobyname (__const char *__name) __THROW;
+
+/* Return entry from protocol data base which number is PROTO. */
+extern struct protoent *getprotobynumber (int __proto) __THROW;
+
+
+#ifdef __USE_MISC
+/* Reentrant versions of the functions above. The additional
+ arguments specify a buffer of BUFLEN starting at BUF. */
+extern int getprotoent_r (struct protoent *__restrict __result_buf,
+ char *__restrict __buf, size_t __buflen,
+ struct protoent **__restrict __result) __THROW;
+
+extern int getprotobyname_r (__const char *__restrict __name,
+ struct protoent *__restrict __result_buf,
+ char *__restrict __buf, size_t __buflen,
+ struct protoent **__restrict __result) __THROW;
+
+extern int getprotobynumber_r (int __proto,
+ struct protoent *__restrict __result_buf,
+ char *__restrict __buf, size_t __buflen,
+ struct protoent **__restrict __result) __THROW;
+#endif /* misc */
+
+
+/* Establish network group NETGROUP for enumeration. */
+extern int setnetgrent (__const char *__netgroup) __THROW;
+
+/* Free all space allocated by previous `setnetgrent' call. */
+extern void endnetgrent (void) __THROW;
+
+/* Get next member of netgroup established by last `setnetgrent' call
+ and return pointers to elements in HOSTP, USERP, and DOMAINP. */
+extern int getnetgrent (char **__restrict __hostp,
+ char **__restrict __userp,
+ char **__restrict __domainp) __THROW;
+
+#ifdef __USE_MISC
+/* Test whether NETGROUP contains the triple (HOST,USER,DOMAIN). */
+extern int innetgr (__const char *__netgroup, __const char *__host,
+ __const char *__user, __const char *domain) __THROW;
+
+/* Reentrant version of `getnetgrent' where result is placed in BUFFER. */
+extern int getnetgrent_r (char **__restrict __hostp,
+ char **__restrict __userp,
+ char **__restrict __domainp,
+ char *__restrict __buffer, size_t __buflen) __THROW;
+#endif /* misc */
+
+
+#ifdef __USE_BSD
+/* Call `rshd' at port RPORT on remote machine *AHOST to execute CMD.
+ The local user is LOCUSER, on the remote machine the command is
+ executed as REMUSER. In *FD2P the descriptor to the socket for the
+ connection is returned. The caller must have the right to use a
+ reserved port. When the function returns *AHOST contains the
+ official host name. */
+extern int rcmd (char **__restrict __ahost, unsigned short int __rport,
+ __const char *__restrict __locuser,
+ __const char *__restrict __remuser,
+ __const char *__restrict __cmd, int *__restrict __fd2p)
+ __THROW;
+
+/* This is the equivalent function where the protocol can be selected
+ and which therefore can be used for IPv6. */
+extern int rcmd_af (char **__restrict __ahost, unsigned short int __rport,
+ __const char *__restrict __locuser,
+ __const char *__restrict __remuser,
+ __const char *__restrict __cmd, int *__restrict __fd2p,
+ sa_family_t __af) __THROW;
+
+/* Call `rexecd' at port RPORT on remote machine *AHOST to execute
+ CMD. The process runs at the remote machine using the ID of user
+ NAME whose cleartext password is PASSWD. In *FD2P the descriptor
+ to the socket for the connection is returned. When the function
+ returns *AHOST contains the official host name. */
+extern int rexec (char **__restrict __ahost, int __rport,
+ __const char *__restrict __name,
+ __const char *__restrict __pass,
+ __const char *__restrict __cmd, int *__restrict __fd2p)
+ __THROW;
+
+/* This is the equivalent function where the protocol can be selected
+ and which therefore can be used for IPv6. */
+extern int rexec_af (char **__restrict __ahost, int __rport,
+ __const char *__restrict __name,
+ __const char *__restrict __pass,
+ __const char *__restrict __cmd, int *__restrict __fd2p,
+ sa_family_t __af) __THROW;
+
+/* Check whether user REMUSER on system RHOST is allowed to login as LOCUSER.
+ If SUSER is not zero the user tries to become superuser. Return 0 if
+ it is possible. */
+extern int ruserok (__const char *__rhost, int __suser,
+ __const char *__remuser, __const char *__locuser) __THROW;
+
+/* This is the equivalent function where the protocol can be selected
+ and which therefore can be used for IPv6. */
+extern int ruserok_af (__const char *__rhost, int __suser,
+ __const char *__remuser, __const char *__locuser,
+ sa_family_t __af) __THROW;
+
+/* Try to allocate reserved port, returning a descriptor for a socket opened
+ at this port or -1 if unsuccessful. The search for an available port
+ will start at ALPORT and continues with lower numbers. */
+extern int rresvport (int *__alport) __THROW;
+
+/* This is the equivalent function where the protocol can be selected
+ and which therefore can be used for IPv6. */
+extern int rresvport_af (int *__alport, sa_family_t __af) __THROW;
+#endif
+
+
+/* Extension from POSIX.1g. */
+#ifdef __USE_POSIX
+/* Structure to contain information about address of a service provider. */
+struct addrinfo
+{
+ int ai_flags; /* Input flags. */
+ int ai_family; /* Protocol family for socket. */
+ int ai_socktype; /* Socket type. */
+ int ai_protocol; /* Protocol for socket. */
+ socklen_t ai_addrlen; /* Length of socket address. */
+ struct sockaddr *ai_addr; /* Socket address for socket. */
+ char *ai_canonname; /* Canonical name for service location. */
+ struct addrinfo *ai_next; /* Pointer to next in list. */
};
-struct rpcent {
- char *r_name; /* name of server for this rpc program */
- char **r_aliases; /* alias list */
- int r_number; /* rpc program number */
+# ifdef __USE_GNU
+/* Structure used as control block for asynchronous lookup. */
+struct gaicb
+{
+ const char *ar_name; /* Name to look up. */
+ const char *ar_service; /* Service name. */
+ const struct addrinfo *ar_request; /* Additional request specification. */
+ struct addrinfo *ar_result; /* Pointer to result. */
+ /* The following are internal elements. */
+ int __return;
+ int __unused[5];
};
-#if defined(_POSIX_THREAD_SAFE_FUNCTIONS) || defined(_REENTRANT)
+/* Lookup mode. */
+# define GAI_WAIT 0
+# define GAI_NOWAIT 1
+# endif
-#define __NETDB_MAXALIASES 35
-#define __NETDB_MAXADDRS 35
+/* Possible values for `ai_flags' field in `addrinfo' structure. */
+# define AI_PASSIVE 0x0001 /* Socket address is intended for `bind'. */
+# define AI_CANONNAME 0x0002 /* Request for canonical name. */
+# define AI_NUMERICHOST 0x0004 /* Don't use name resolution. */
-#endif
+/* Error values for `getaddrinfo' function. */
+# define EAI_BADFLAGS -1 /* Invalid value for `ai_flags' field. */
+# define EAI_NONAME -2 /* NAME or SERVICE is unknown. */
+# define EAI_AGAIN -3 /* Temporary failure in name resolution. */
+# define EAI_FAIL -4 /* Non-recoverable failure in name res. */
+# define EAI_NODATA -5 /* No address associated with NAME. */
+# define EAI_FAMILY -6 /* `ai_family' not supported. */
+# define EAI_SOCKTYPE -7 /* `ai_socktype' not supported. */
+# define EAI_SERVICE -8 /* SERVICE not supported for `ai_socktype'. */
+# define EAI_ADDRFAMILY -9 /* Address family for NAME not supported. */
+# define EAI_MEMORY -10 /* Memory allocation failure. */
+# define EAI_SYSTEM -11 /* System error returned in `errno'. */
+# ifdef __USE_GNU
+# define EAI_INPROGRESS -100 /* Processing request in progress. */
+# define EAI_CANCELED -101 /* Request canceled. */
+# define EAI_NOTCANCELED -102 /* Request not canceled. */
+# define EAI_ALLDONE -103 /* All requests done. */
+# define EAI_INTR -104 /* Interrupted by a signal. */
+# endif
-/*
- * Error return codes from gethostbyname() and gethostbyaddr()
- * (left in extern int h_errno).
- */
+# define NI_MAXHOST 1025
+# define NI_MAXSERV 32
-/* uClibc reuses errno for h_errno. */
-#include <errno.h>
-#define h_errno errno
+# define NI_NUMERICHOST 1 /* Don't try to look up hostname. */
+# define NI_NUMERICSERV 2 /* Don't convert port number to name. */
+# define NI_NOFQDN 4 /* Only return nodename portion. */
+# define NI_NAMEREQD 8 /* Don't return numeric addresses. */
+# define NI_DGRAM 16 /* Look up UDP service rather than TCP. */
-#define NETDB_INTERNAL -1 /* see errno */
-#define NETDB_SUCCESS 0 /* no problem */
-#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 */
+/* Translate name of a service location and/or a service name to set of
+ socket addresses. */
+extern int getaddrinfo (__const char *__restrict __name,
+ __const char *__restrict __service,
+ __const struct addrinfo *__restrict __req,
+ struct addrinfo **__restrict __pai) __THROW;
-#include <features.h>
+/* Free `addrinfo' structure AI including associated storage. */
+extern void freeaddrinfo (struct addrinfo *__ai) __THROW;
-__BEGIN_DECLS
+/* Convert error return from getaddrinfo() to a string. */
+extern __const char *gai_strerror (int __ecode) __THROW;
-void endhostent __P((void));
-void endnetent __P((void));
-void endprotoent __P((void));
-void endservent __P((void));
-void endrpcent __P ((void));
-struct hostent *gethostbyaddr __P((__const char *, int, int));
-struct hostent *gethostbyname __P((__const char *));
-struct hostent *gethostbyname2 __P((__const char *, int));
-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));
-struct rpcent *getrpcent __P((void));
-struct rpcent *getrpcbyname __P((__const char *));
-struct rpcent *getrpcbynumber __P((int));
-void herror __P((__const char *));
-void sethostent __P((int));
-/* void sethostfile __P((__const char *)); */
-void setnetent __P((int));
-void setprotoent __P((int));
-void setservent __P((int));
-void setrpcent __P((int));
-
-#define hstrerror(x) strerror(x)
-
-#if defined(_POSIX_THREAD_SAFE_FUNCTIONS) || defined(_REENTRANT)
-struct hostent *gethostbyaddr_r __P((const char *__addr,
- int __length, int __type,
- struct hostent *__result,
- char *__buffer, int __buflen, int *__h_errnop));
-struct hostent *gethostbyname_r __P((const char * __name,
- struct hostent *__result, char *__buffer,
- int __buflen, int *__h_errnop));
-struct hostent *gethostent_r __P((struct hostent *__result,
- char *__buffer, int __buflen, int *__h_errnop));
-struct netent *getnetbyaddr_r __P((long __net, int __type,
- struct netent *__result, char *__buffer,
- int __buflen));
-struct netent *getnetbyname_r __P((const char * __name,
- struct netent *__result, char *__buffer,
- int __buflen));
-struct netent *getnetent_r __P((struct netent *__result,
- char *__buffer, int __buflen));
-struct protoent *getprotobyname_r __P((const char * __name,
- struct protoent *__result, char *__buffer,
- int __buflen));
-struct protoent *getprotobynumber_r __P((int __proto,
- struct protoent *__result, char *__buffer,
- int __buflen));
-struct protoent *getprotoent_r __P((struct protoent *__result,
- char *__buffer, int __buflen));
-struct servent *getservbyname_r __P((const char * __name,
- const char *__proto, struct servent *__result,
- char *__buffer, int __buflen));
-struct servent *getservbyport_r __P((int __port,
- const char *__proto, struct servent *__result,
- char *__buffer, int __buflen));
-struct servent *getservent_r __P((struct servent *__result,
- char *__buffer, int __buflen));
-
-int *__h_errno_location __P((void));
+/* Translate a socket address to a location and service name. */
+extern int getnameinfo (__const struct sockaddr *__restrict __sa,
+ socklen_t __salen, char *__restrict __host,
+ socklen_t __hostlen, char *__restrict __serv,
+ socklen_t __servlen, unsigned int __flags) __THROW;
-#endif
+# ifdef __USE_GNU
+/* Enqueue ENT requests from the LIST. If MODE is GAI_WAIT wait until all
+ requests are handled. If WAIT is GAI_NOWAIT return immediately after
+ queueing the requests and signal completion according to SIG. */
+extern int getaddrinfo_a (int __mode, struct gaicb *__list[__restrict_arr],
+ int __ent, struct sigevent *__restrict __sig)
+ __THROW;
+
+/* Suspend execution of the thread until at least one of the ENT requests
+ in LIST is handled. If TIMEOUT is not a null pointer it specifies the
+ longest time the function keeps waiting before returning with an error. */
+extern int gai_suspend (__const struct gaicb *__const __list[], int __ent,
+ __const struct timespec *__timeout) __THROW;
+
+/* Get the error status of the request REQ. */
+extern int gai_error (struct gaicb *__req) __THROW;
+
+/* Cancel the requests associated with GAICBP. */
+extern int gai_cancel (struct gaicb *__gaicbp) __THROW;
+# endif /* GNU */
+#endif /* POSIX */
__END_DECLS
-#endif /* !_NETDB_H_ */
+#endif /* netdb.h */