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- /* Copyright (C) 1996-2017 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, see
- <http://www.gnu.org/licenses/>. */
-
-/* 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 <bits/stdint-uintn.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
-# include <bits/types/sigevent_t.h>
-# include <bits/types/struct_timespec.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
-
-#if defined __USE_MISC || !defined __USE_XOPEN2K8
-/* Error status for non-reentrant lookup functions.
- We use a macro to access always the thread-specific `h_errno' variable. */
-# define h_errno (*__h_errno_location ())
-
-/* Function to get address of global `h_errno' variable. */
-extern int *__h_errno_location (void) __THROW __attribute__ ((__const__));
-
-
-/* Possible values left in `h_errno'. */
-# 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. */
-#endif
-#ifdef __USE_MISC
-# define NETDB_INTERNAL -1 /* See errno. */
-# define NETDB_SUCCESS 0 /* No problem. */
-# define NO_ADDRESS NO_DATA /* No address, look for MX record. */
-#endif
-
-#if defined __USE_XOPEN2K || defined __USE_XOPEN_EXTENDED
-/* Highest reserved Internet port number. */
-# define IPPORT_RESERVED 1024
-#endif
-
-#ifdef __USE_GNU
-/* Scope delimiter for getaddrinfo(), getnameinfo(). */
-# define SCOPE_DELIMITER '%'
-#endif
-
-#ifdef __USE_MISC
-/* 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;
-#endif
-
-
-/* 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. */
-#ifdef __USE_MISC
-# define h_addr h_addr_list[0] /* Address, for backward compatibility.*/
-#endif
-};
-
-/* Open host data base files and mark them as staying open even after
- a later search if STAY_OPEN is non-zero.
-
- This function is a possible cancellation point and therefore not
- marked with __THROW. */
-extern void sethostent (int __stay_open);
-
-/* Close host data base files and clear `stay open' flag.
-
- This function is a possible cancellation point and therefore not
- marked with __THROW. */
-extern void endhostent (void);
-
-/* Get next entry from host data base file. Open data base if
- necessary.
-
- This function is a possible cancellation point and therefore not
- marked with __THROW. */
-extern struct hostent *gethostent (void);
-
-/* Return entry from host data base which address match ADDR with
- length LEN and type TYPE.
-
- This function is a possible cancellation point and therefore not
- marked with __THROW. */
-extern struct hostent *gethostbyaddr (const void *__addr, __socklen_t __len,
- int __type);
-
-/* Return entry from host data base for host with NAME.
-
- This function is a possible cancellation point and therefore not
- marked with __THROW. */
-extern struct hostent *gethostbyname (const char *__name);
-
-#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.
-
- This function is not part of POSIX and therefore no official
- cancellation point. But due to similarity with an POSIX interface
- or due to the implementation it is a cancellation point and
- therefore not marked with __THROW. */
-extern struct hostent *gethostbyname2 (const char *__name, int __af);
-
-/* 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.
-
- These functions are not part of POSIX and therefore no official
- cancellation point. But due to similarity with an POSIX interface
- or due to the implementation they are cancellation points and
- therefore not marked with __THROW. */
-extern int gethostent_r (struct hostent *__restrict __result_buf,
- char *__restrict __buf, size_t __buflen,
- struct hostent **__restrict __result,
- int *__restrict __h_errnop);
-
-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);
-
-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);
-
-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);
-#endif /* misc */
-
-
-/* Open network data base files and mark them as staying open even
- after a later search if STAY_OPEN is non-zero.
-
- This function is a possible cancellation point and therefore not
- marked with __THROW. */
-extern void setnetent (int __stay_open);
-
-/* Close network data base files and clear `stay open' flag.
-
- This function is a possible cancellation point and therefore not
- marked with __THROW. */
-extern void endnetent (void);
-
-/* Get next entry from network data base file. Open data base if
- necessary.
-
- This function is a possible cancellation point and therefore not
- marked with __THROW. */
-extern struct netent *getnetent (void);
-
-/* Return entry from network data base which address match NET and
- type TYPE.
-
- This function is a possible cancellation point and therefore not
- marked with __THROW. */
-extern struct netent *getnetbyaddr (uint32_t __net, int __type);
-
-/* Return entry from network data base for network with NAME.
-
- This function is a possible cancellation point and therefore not
- marked with __THROW. */
-extern struct netent *getnetbyname (const char *__name);
-
-#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.
-
- These functions are not part of POSIX and therefore no official
- cancellation point. But due to similarity with an POSIX interface
- or due to the implementation they are cancellation points and
- therefore not marked with __THROW. */
-extern int getnetent_r (struct netent *__restrict __result_buf,
- char *__restrict __buf, size_t __buflen,
- struct netent **__restrict __result,
- int *__restrict __h_errnop);
-
-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);
-
-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);
-#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. */
-};
-
-/* Open service data base files and mark them as staying open even
- after a later search if STAY_OPEN is non-zero.
-
- This function is a possible cancellation point and therefore not
- marked with __THROW. */
-extern void setservent (int __stay_open);
-
-/* Close service data base files and clear `stay open' flag.
-
- This function is a possible cancellation point and therefore not
- marked with __THROW. */
-extern void endservent (void);
-
-/* Get next entry from service data base file. Open data base if
- necessary.
-
- This function is a possible cancellation point and therefore not
- marked with __THROW. */
-extern struct servent *getservent (void);
-
-/* Return entry from network data base for network with NAME and
- protocol PROTO.
-
- This function is a possible cancellation point and therefore not
- marked with __THROW. */
-extern struct servent *getservbyname (const char *__name, const char *__proto);
-
-/* Return entry from service data base which matches port PORT and
- protocol PROTO.
-
- This function is a possible cancellation point and therefore not
- marked with __THROW. */
-extern struct servent *getservbyport (int __port, const char *__proto);
-
-
-#ifdef __USE_MISC
-/* Reentrant versions of the functions above. The additional
- arguments specify a buffer of BUFLEN starting at BUF.
-
- These functions are not part of POSIX and therefore no official
- cancellation point. But due to similarity with an POSIX interface
- or due to the implementation they are cancellation points and
- therefore not marked with __THROW. */
-extern int getservent_r (struct servent *__restrict __result_buf,
- char *__restrict __buf, size_t __buflen,
- struct servent **__restrict __result);
-
-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);
-
-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);
-#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. */
-};
-
-/* Open protocol data base files and mark them as staying open even
- after a later search if STAY_OPEN is non-zero.
-
- This function is a possible cancellation point and therefore not
- marked with __THROW. */
-extern void setprotoent (int __stay_open);
-
-/* Close protocol data base files and clear `stay open' flag.
-
- This function is a possible cancellation point and therefore not
- marked with __THROW. */
-extern void endprotoent (void);
-
-/* Get next entry from protocol data base file. Open data base if
- necessary.
-
- This function is a possible cancellation point and therefore not
- marked with __THROW. */
-extern struct protoent *getprotoent (void);
-
-/* Return entry from protocol data base for network with NAME.
-
- This function is a possible cancellation point and therefore not
- marked with __THROW. */
-extern struct protoent *getprotobyname (const char *__name);
-
-/* Return entry from protocol data base which number is PROTO.
-
- This function is a possible cancellation point and therefore not
- marked with __THROW. */
-extern struct protoent *getprotobynumber (int __proto);
-
-
-#ifdef __USE_MISC
-/* Reentrant versions of the functions above. The additional
- arguments specify a buffer of BUFLEN starting at BUF.
-
- These functions are not part of POSIX and therefore no official
- cancellation point. But due to similarity with an POSIX interface
- or due to the implementation they are cancellation points and
- therefore not marked with __THROW. */
-extern int getprotoent_r (struct protoent *__restrict __result_buf,
- char *__restrict __buf, size_t __buflen,
- struct protoent **__restrict __result);
-
-extern int getprotobyname_r (const char *__restrict __name,
- struct protoent *__restrict __result_buf,
- char *__restrict __buf, size_t __buflen,
- struct protoent **__restrict __result);
-
-extern int getprotobynumber_r (int __proto,
- struct protoent *__restrict __result_buf,
- char *__restrict __buf, size_t __buflen,
- struct protoent **__restrict __result);
-
-
-/* Establish network group NETGROUP for enumeration.
-
- This function is not part of POSIX and therefore no official
- cancellation point. But due to similarity with an POSIX interface
- or due to the implementation it is a cancellation point and
- therefore not marked with __THROW. */
-extern int setnetgrent (const char *__netgroup);
-
-/* Free all space allocated by previous `setnetgrent' call.
-
- This function is not part of POSIX and therefore no official
- cancellation point. But due to similarity with an POSIX interface
- or due to the implementation it is a cancellation point and
- therefore not marked with __THROW. */
-extern void endnetgrent (void);
-
-/* Get next member of netgroup established by last `setnetgrent' call
- and return pointers to elements in HOSTP, USERP, and DOMAINP.
-
- This function is not part of POSIX and therefore no official
- cancellation point. But due to similarity with an POSIX interface
- or due to the implementation it is a cancellation point and
- therefore not marked with __THROW. */
-extern int getnetgrent (char **__restrict __hostp,
- char **__restrict __userp,
- char **__restrict __domainp);
-
-
-/* Test whether NETGROUP contains the triple (HOST,USER,DOMAIN).
-
- This function is not part of POSIX and therefore no official
- cancellation point. But due to similarity with an POSIX interface
- or due to the implementation it is a cancellation point and
- therefore not marked with __THROW. */
-extern int innetgr (const char *__netgroup, const char *__host,
- const char *__user, const char *__domain);
-
-/* Reentrant version of `getnetgrent' where result is placed in BUFFER.
-
- This function is not part of POSIX and therefore no official
- cancellation point. But due to similarity with an POSIX interface
- or due to the implementation it is a cancellation point and
- therefore not marked with __THROW. */
-extern int getnetgrent_r (char **__restrict __hostp,
- char **__restrict __userp,
- char **__restrict __domainp,
- char *__restrict __buffer, size_t __buflen);
-#endif /* misc */
-
-
-#ifdef __USE_MISC
-/* 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.
-
- This function is not part of POSIX and therefore no official
- cancellation point. But due to similarity with an POSIX interface
- or due to the implementation it is a cancellation point and
- therefore not marked with __THROW. */
-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);
-
-/* This is the equivalent function where the protocol can be selected
- and which therefore can be used for IPv6.
-
- This function is not part of POSIX and therefore no official
- cancellation point. But due to similarity with an POSIX interface
- or due to the implementation it is a cancellation point and
- therefore not marked with __THROW. */
-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);
-
-/* 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.
-
- This function is not part of POSIX and therefore no official
- cancellation point. But due to similarity with an POSIX interface
- or due to the implementation it is a cancellation point and
- therefore not marked with __THROW. */
-extern int rexec (char **__restrict __ahost, int __rport,
- const char *__restrict __name,
- const char *__restrict __pass,
- const char *__restrict __cmd, int *__restrict __fd2p);
-
-/* This is the equivalent function where the protocol can be selected
- and which therefore can be used for IPv6.
-
- This function is not part of POSIX and therefore no official
- cancellation point. But due to similarity with an POSIX interface
- or due to the implementation it is a cancellation point and
- therefore not marked with __THROW. */
-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);
-
-/* 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.
-
- This function is not part of POSIX and therefore no official
- cancellation point. But due to similarity with an POSIX interface
- or due to the implementation it is a cancellation point and
- therefore not marked with __THROW. */
-extern int ruserok (const char *__rhost, int __suser,
- const char *__remuser, const char *__locuser);
-
-/* This is the equivalent function where the protocol can be selected
- and which therefore can be used for IPv6.
-
- This function is not part of POSIX and therefore no official
- cancellation point. But due to similarity with an POSIX interface
- or due to the implementation it is a cancellation point and
- therefore not marked with __THROW. */
-extern int ruserok_af (const char *__rhost, int __suser,
- const char *__remuser, const char *__locuser,
- sa_family_t __af);
-
-/* Check whether user REMUSER on system indicated by IPv4 address
- RADDR is allowed to login as LOCUSER. Non-IPv4 (e.g., IPv6) are
- not supported. If SUSER is not zero the user tries to become
- superuser. Return 0 if it is possible.
-
- This function is not part of POSIX and therefore no official
- cancellation point. But due to similarity with an POSIX interface
- or due to the implementation it is a cancellation point and
- therefore not marked with __THROW. */
-extern int iruserok (uint32_t __raddr, int __suser,
- const char *__remuser, const char *__locuser);
-
-/* This is the equivalent function where the pfamiliy if the address
- pointed to by RADDR is determined by the value of AF. It therefore
- can be used for IPv6
-
- This function is not part of POSIX and therefore no official
- cancellation point. But due to similarity with an POSIX interface
- or due to the implementation it is a cancellation point and
- therefore not marked with __THROW. */
-extern int iruserok_af (const void *__raddr, int __suser,
- const char *__remuser, const char *__locuser,
- sa_family_t __af);
-
-/* 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.
-
- This function is not part of POSIX and therefore no official
- cancellation point. But due to similarity with an POSIX interface
- or due to the implementation it is a cancellation point and
- therefore not marked with __THROW. */
-extern int rresvport (int *__alport);
-
-/* This is the equivalent function where the protocol can be selected
- and which therefore can be used for IPv6.
-
- This function is not part of POSIX and therefore no official
- cancellation point. But due to similarity with an POSIX interface
- or due to the implementation it is a cancellation point and
- therefore not marked with __THROW. */
-extern int rresvport_af (int *__alport, sa_family_t __af);
-#endif
-
-
-/* Extension from POSIX.1:2001. */
-#ifdef __USE_XOPEN2K
-/* 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. */
-};
-
-# 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 __glibc_reserved[5];
-};
-
-/* Lookup mode. */
-# define GAI_WAIT 0
-# define GAI_NOWAIT 1
-# endif
-
-/* 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. */
-# define AI_V4MAPPED 0x0008 /* IPv4 mapped addresses are acceptable. */
-# define AI_ALL 0x0010 /* Return IPv4 mapped and IPv6 addresses. */
-# define AI_ADDRCONFIG 0x0020 /* Use configuration of this host to choose
- returned address type.. */
-# ifdef __USE_GNU
-# define AI_IDN 0x0040 /* IDN encode input (assuming it is encoded
- in the current locale's character set)
- before looking it up. */
-# define AI_CANONIDN 0x0080 /* Translate canonical name from IDN format. */
-# define AI_IDN_ALLOW_UNASSIGNED 0x0100 /* Don't reject unassigned Unicode
- code points. */
-# define AI_IDN_USE_STD3_ASCII_RULES 0x0200 /* Validate strings according to
- STD3 rules. */
-# endif
-# define AI_NUMERICSERV 0x0400 /* Don't use name resolution. */
-
-/* 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_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_MEMORY -10 /* Memory allocation failure. */
-# define EAI_SYSTEM -11 /* System error returned in `errno'. */
-# define EAI_OVERFLOW -12 /* Argument buffer overflow. */
-# ifdef __USE_GNU
-# define EAI_NODATA -5 /* No address associated with NAME. */
-# define EAI_ADDRFAMILY -9 /* Address family for NAME not supported. */
-# 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. */
-# define EAI_IDN_ENCODE -105 /* IDN encoding failed. */
-# endif
-
-# ifdef __USE_MISC
-# define NI_MAXHOST 1025
-# define NI_MAXSERV 32
-# endif
-
-# 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. */
-# ifdef __USE_GNU
-# define NI_IDN 32 /* Convert name from IDN format. */
-# define NI_IDN_ALLOW_UNASSIGNED 64 /* Don't reject unassigned Unicode
- code points. */
-# define NI_IDN_USE_STD3_ASCII_RULES 128 /* Validate strings according to
- STD3 rules. */
-# endif
-
-/* Translate name of a service location and/or a service name to set of
- socket addresses.
-
- This function is a possible cancellation point and therefore not
- marked with __THROW. */
-extern int getaddrinfo (const char *__restrict __name,
- const char *__restrict __service,
- const struct addrinfo *__restrict __req,
- struct addrinfo **__restrict __pai);
-
-/* Free `addrinfo' structure AI including associated storage. */
-extern void freeaddrinfo (struct addrinfo *__ai) __THROW;
-
-/* Convert error return from getaddrinfo() to a string. */
-extern const char *gai_strerror (int __ecode) __THROW;
-
-/* Translate a socket address to a location and service name.
-
- This function is a possible cancellation point and therefore not
- marked with __THROW. */
-extern int getnameinfo (const struct sockaddr *__restrict __sa,
- socklen_t __salen, char *__restrict __host,
- socklen_t __hostlen, char *__restrict __serv,
- socklen_t __servlen, int __flags);
-#endif /* POSIX */
-
-#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.
-
- This function is not part of POSIX and therefore no official
- cancellation point. But due to similarity with an POSIX interface
- or due to the implementation it is a cancellation point and
- therefore not marked with __THROW. */
-extern int getaddrinfo_a (int __mode, struct gaicb *__list[__restrict_arr],
- int __ent, struct sigevent *__restrict __sig);
-
-/* 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.
-
- This function is not part of POSIX and therefore no official
- cancellation point. But due to similarity with an POSIX interface
- or due to the implementation it is a cancellation point and
- therefore not marked with __THROW. */
-extern int gai_suspend (const struct gaicb *const __list[], int __ent,
- const struct timespec *__timeout);
-
-/* 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 */
-
-__END_DECLS
-
-#endif /* netdb.h */