Rev all the header files to sync things with glibc 2.2.4

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 */