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725 lines
28 KiB
C
725 lines
28 KiB
C
/* Copyright (C) 1996-2025 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<https://www.gnu.org/licenses/>. */
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/* All data returned by the network data base library are supplied in
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host order and returned in network order (suitable for use in
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system calls). */
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#ifndef _NETDB_H
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#define _NETDB_H 1
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#include <features.h>
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#include <netinet/in.h>
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#include <bits/stdint-uintn.h>
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#ifdef __USE_MISC
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/* This is necessary to make this include file properly replace the
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Sun version. */
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# include <rpc/netdb.h>
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#endif
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#ifdef __USE_GNU
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# include <bits/types/sigevent_t.h>
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# include <bits/types/struct_timespec.h>
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#endif
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#include <bits/netdb.h>
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/* Absolute file name for network data base files. */
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#define _PATH_HEQUIV "/etc/hosts.equiv"
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#define _PATH_HOSTS "/etc/hosts"
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#define _PATH_NETWORKS "/etc/networks"
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#define _PATH_NSSWITCH_CONF "/etc/nsswitch.conf"
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#define _PATH_PROTOCOLS "/etc/protocols"
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#define _PATH_SERVICES "/etc/services"
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__BEGIN_DECLS
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#if defined __USE_MISC || !defined __USE_XOPEN2K8
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/* Error status for non-reentrant lookup functions.
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We use a macro to access always the thread-specific `h_errno' variable. */
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# define h_errno (*__h_errno_location ())
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/* Function to get address of global `h_errno' variable. */
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extern int *__h_errno_location (void) __THROW __attribute__ ((__const__));
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/* Possible values left in `h_errno'. */
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# define HOST_NOT_FOUND 1 /* Authoritative Answer Host not found. */
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# define TRY_AGAIN 2 /* Non-Authoritative Host not found,
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or SERVERFAIL. */
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# define NO_RECOVERY 3 /* Non recoverable errors, FORMERR, REFUSED,
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NOTIMP. */
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# define NO_DATA 4 /* Valid name, no data record of requested
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type. */
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#endif
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#ifdef __USE_MISC
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# define NETDB_INTERNAL -1 /* See errno. */
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# define NETDB_SUCCESS 0 /* No problem. */
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# define NO_ADDRESS NO_DATA /* No address, look for MX record. */
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#endif
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#if defined __USE_XOPEN2K || defined __USE_XOPEN_EXTENDED
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/* Highest reserved Internet port number. */
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# define IPPORT_RESERVED 1024
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#endif
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#ifdef __USE_GNU
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/* Scope delimiter for getaddrinfo(), getnameinfo(). */
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# define SCOPE_DELIMITER '%'
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#endif
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#ifdef __USE_MISC
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/* Print error indicated by `h_errno' variable on standard error. STR
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if non-null is printed before the error string. */
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extern void herror (const char *__str) __THROW;
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/* Return string associated with error ERR_NUM. */
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extern const char *hstrerror (int __err_num) __THROW;
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#endif
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/* Description of data base entry for a single host. */
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struct hostent
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{
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char *h_name; /* Official name of host. */
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char **h_aliases; /* Alias list. */
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int h_addrtype; /* Host address type. */
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int h_length; /* Length of address. */
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char **h_addr_list; /* List of addresses from name server. */
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#ifdef __USE_MISC
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# define h_addr h_addr_list[0] /* Address, for backward compatibility.*/
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#endif
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};
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/* Open host data base files and mark them as staying open even after
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a later search if STAY_OPEN is non-zero.
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This function is a possible cancellation point and therefore not
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marked with __THROW. */
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extern void sethostent (int __stay_open);
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/* Close host data base files and clear `stay open' flag.
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This function is a possible cancellation point and therefore not
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marked with __THROW. */
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extern void endhostent (void);
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/* Get next entry from host data base file. Open data base if
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necessary.
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This function is a possible cancellation point and therefore not
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marked with __THROW. */
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extern struct hostent *gethostent (void);
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/* Return entry from host data base which address match ADDR with
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length LEN and type TYPE.
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This function is a possible cancellation point and therefore not
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marked with __THROW. */
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extern struct hostent *gethostbyaddr (const void *__addr, __socklen_t __len,
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int __type);
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/* Return entry from host data base for host with NAME.
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This function is a possible cancellation point and therefore not
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marked with __THROW. */
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extern struct hostent *gethostbyname (const char *__name);
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#ifdef __USE_MISC
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/* Return entry from host data base for host with NAME. AF must be
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set to the address type which is `AF_INET' for IPv4 or `AF_INET6'
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for IPv6.
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This function is not part of POSIX and therefore no official
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cancellation point. But due to similarity with an POSIX interface
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or due to the implementation it is a cancellation point and
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therefore not marked with __THROW. */
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extern struct hostent *gethostbyname2 (const char *__name, int __af);
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/* Reentrant versions of the functions above. The additional
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arguments specify a buffer of BUFLEN starting at BUF. The last
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argument is a pointer to a variable which gets the value which
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would be stored in the global variable `herrno' by the
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non-reentrant functions.
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These functions are not part of POSIX and therefore no official
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cancellation point. But due to similarity with an POSIX interface
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or due to the implementation they are cancellation points and
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therefore not marked with __THROW. */
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extern int gethostent_r (struct hostent *__restrict __result_buf,
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char *__restrict __buf, size_t __buflen,
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struct hostent **__restrict __result,
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int *__restrict __h_errnop);
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extern int gethostbyaddr_r (const void *__restrict __addr, __socklen_t __len,
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int __type,
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struct hostent *__restrict __result_buf,
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char *__restrict __buf, size_t __buflen,
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struct hostent **__restrict __result,
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int *__restrict __h_errnop);
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extern int gethostbyname_r (const char *__restrict __name,
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struct hostent *__restrict __result_buf,
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char *__restrict __buf, size_t __buflen,
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struct hostent **__restrict __result,
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int *__restrict __h_errnop);
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extern int gethostbyname2_r (const char *__restrict __name, int __af,
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struct hostent *__restrict __result_buf,
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char *__restrict __buf, size_t __buflen,
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struct hostent **__restrict __result,
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int *__restrict __h_errnop);
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#endif /* misc */
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/* Open network data base files and mark them as staying open even
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after a later search if STAY_OPEN is non-zero.
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This function is a possible cancellation point and therefore not
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marked with __THROW. */
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extern void setnetent (int __stay_open);
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/* Close network data base files and clear `stay open' flag.
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This function is a possible cancellation point and therefore not
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marked with __THROW. */
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extern void endnetent (void);
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/* Get next entry from network data base file. Open data base if
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necessary.
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This function is a possible cancellation point and therefore not
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marked with __THROW. */
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extern struct netent *getnetent (void);
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/* Return entry from network data base which address match NET and
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type TYPE.
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This function is a possible cancellation point and therefore not
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marked with __THROW. */
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extern struct netent *getnetbyaddr (uint32_t __net, int __type);
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/* Return entry from network data base for network with NAME.
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This function is a possible cancellation point and therefore not
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marked with __THROW. */
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extern struct netent *getnetbyname (const char *__name);
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#ifdef __USE_MISC
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/* Reentrant versions of the functions above. The additional
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arguments specify a buffer of BUFLEN starting at BUF. The last
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argument is a pointer to a variable which gets the value which
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would be stored in the global variable `herrno' by the
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non-reentrant functions.
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These functions are not part of POSIX and therefore no official
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cancellation point. But due to similarity with an POSIX interface
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or due to the implementation they are cancellation points and
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therefore not marked with __THROW. */
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extern int getnetent_r (struct netent *__restrict __result_buf,
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char *__restrict __buf, size_t __buflen,
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struct netent **__restrict __result,
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int *__restrict __h_errnop);
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extern int getnetbyaddr_r (uint32_t __net, int __type,
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struct netent *__restrict __result_buf,
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char *__restrict __buf, size_t __buflen,
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struct netent **__restrict __result,
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int *__restrict __h_errnop);
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extern int getnetbyname_r (const char *__restrict __name,
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struct netent *__restrict __result_buf,
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char *__restrict __buf, size_t __buflen,
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struct netent **__restrict __result,
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int *__restrict __h_errnop);
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#endif /* misc */
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/* Description of data base entry for a single service. */
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struct servent
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{
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char *s_name; /* Official service name. */
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char **s_aliases; /* Alias list. */
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int s_port; /* Port number. */
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char *s_proto; /* Protocol to use. */
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};
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/* Open service data base files and mark them as staying open even
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after a later search if STAY_OPEN is non-zero.
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This function is a possible cancellation point and therefore not
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marked with __THROW. */
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extern void setservent (int __stay_open);
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/* Close service data base files and clear `stay open' flag.
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This function is a possible cancellation point and therefore not
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marked with __THROW. */
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extern void endservent (void);
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/* Get next entry from service data base file. Open data base if
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necessary.
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This function is a possible cancellation point and therefore not
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marked with __THROW. */
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extern struct servent *getservent (void);
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/* Return entry from network data base for network with NAME and
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protocol PROTO.
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This function is a possible cancellation point and therefore not
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marked with __THROW. */
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extern struct servent *getservbyname (const char *__name, const char *__proto);
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/* Return entry from service data base which matches port PORT and
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protocol PROTO.
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This function is a possible cancellation point and therefore not
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marked with __THROW. */
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extern struct servent *getservbyport (int __port, const char *__proto);
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#ifdef __USE_MISC
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/* Reentrant versions of the functions above. The additional
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arguments specify a buffer of BUFLEN starting at BUF.
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These functions are not part of POSIX and therefore no official
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cancellation point. But due to similarity with an POSIX interface
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or due to the implementation they are cancellation points and
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therefore not marked with __THROW. */
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extern int getservent_r (struct servent *__restrict __result_buf,
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char *__restrict __buf, size_t __buflen,
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struct servent **__restrict __result);
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extern int getservbyname_r (const char *__restrict __name,
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const char *__restrict __proto,
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struct servent *__restrict __result_buf,
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char *__restrict __buf, size_t __buflen,
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struct servent **__restrict __result);
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extern int getservbyport_r (int __port, const char *__restrict __proto,
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struct servent *__restrict __result_buf,
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char *__restrict __buf, size_t __buflen,
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struct servent **__restrict __result);
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#endif /* misc */
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/* Description of data base entry for a single service. */
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struct protoent
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{
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char *p_name; /* Official protocol name. */
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char **p_aliases; /* Alias list. */
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int p_proto; /* Protocol number. */
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};
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/* Open protocol data base files and mark them as staying open even
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after a later search if STAY_OPEN is non-zero.
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This function is a possible cancellation point and therefore not
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marked with __THROW. */
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extern void setprotoent (int __stay_open);
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/* Close protocol data base files and clear `stay open' flag.
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This function is a possible cancellation point and therefore not
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marked with __THROW. */
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extern void endprotoent (void);
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/* Get next entry from protocol data base file. Open data base if
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necessary.
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This function is a possible cancellation point and therefore not
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marked with __THROW. */
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extern struct protoent *getprotoent (void);
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/* Return entry from protocol data base for network with NAME.
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This function is a possible cancellation point and therefore not
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marked with __THROW. */
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extern struct protoent *getprotobyname (const char *__name);
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/* Return entry from protocol data base which number is PROTO.
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This function is a possible cancellation point and therefore not
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marked with __THROW. */
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extern struct protoent *getprotobynumber (int __proto);
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#ifdef __USE_MISC
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/* Reentrant versions of the functions above. The additional
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arguments specify a buffer of BUFLEN starting at BUF.
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These functions are not part of POSIX and therefore no official
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cancellation point. But due to similarity with an POSIX interface
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or due to the implementation they are cancellation points and
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therefore not marked with __THROW. */
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extern int getprotoent_r (struct protoent *__restrict __result_buf,
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char *__restrict __buf, size_t __buflen,
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struct protoent **__restrict __result);
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extern int getprotobyname_r (const char *__restrict __name,
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struct protoent *__restrict __result_buf,
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char *__restrict __buf, size_t __buflen,
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struct protoent **__restrict __result);
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extern int getprotobynumber_r (int __proto,
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struct protoent *__restrict __result_buf,
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char *__restrict __buf, size_t __buflen,
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struct protoent **__restrict __result);
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/* Establish network group NETGROUP for enumeration.
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This function is not part of POSIX and therefore no official
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cancellation point. But due to similarity with an POSIX interface
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or due to the implementation it is a cancellation point and
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therefore not marked with __THROW. */
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extern int setnetgrent (const char *__netgroup);
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/* Free all space allocated by previous `setnetgrent' call.
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This function is not part of POSIX and therefore no official
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cancellation point. But due to similarity with an POSIX interface
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or due to the implementation it is a cancellation point and
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therefore not marked with __THROW. */
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extern void endnetgrent (void);
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/* Get next member of netgroup established by last `setnetgrent' call
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and return pointers to elements in HOSTP, USERP, and DOMAINP.
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This function is not part of POSIX and therefore no official
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cancellation point. But due to similarity with an POSIX interface
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or due to the implementation it is a cancellation point and
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therefore not marked with __THROW. */
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extern int getnetgrent (char **__restrict __hostp,
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char **__restrict __userp,
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char **__restrict __domainp);
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/* Test whether NETGROUP contains the triple (HOST,USER,DOMAIN).
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This function is not part of POSIX and therefore no official
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cancellation point. But due to similarity with an POSIX interface
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or due to the implementation it is a cancellation point and
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therefore not marked with __THROW. */
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extern int innetgr (const char *__netgroup, const char *__host,
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const char *__user, const char *__domain);
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/* Reentrant version of `getnetgrent' where result is placed in BUFFER.
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This function is not part of POSIX and therefore no official
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cancellation point. But due to similarity with an POSIX interface
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or due to the implementation it is a cancellation point and
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therefore not marked with __THROW. */
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extern int getnetgrent_r (char **__restrict __hostp,
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char **__restrict __userp,
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char **__restrict __domainp,
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char *__restrict __buffer, size_t __buflen);
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#endif /* misc */
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#ifdef __USE_MISC
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/* Call `rshd' at port RPORT on remote machine *AHOST to execute CMD.
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The local user is LOCUSER, on the remote machine the command is
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executed as REMUSER. In *FD2P the descriptor to the socket for the
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connection is returned. The caller must have the right to use a
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reserved port. When the function returns *AHOST contains the
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official host name.
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This function is not part of POSIX and therefore no official
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cancellation point. But due to similarity with an POSIX interface
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or due to the implementation it is a cancellation point and
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therefore not marked with __THROW. */
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extern int rcmd (char **__restrict __ahost, unsigned short int __rport,
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const char *__restrict __locuser,
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const char *__restrict __remuser,
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const char *__restrict __cmd, int *__restrict __fd2p);
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/* This is the equivalent function where the protocol can be selected
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and which therefore can be used for IPv6.
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This function is not part of POSIX and therefore no official
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cancellation point. But due to similarity with an POSIX interface
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or due to the implementation it is a cancellation point and
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therefore not marked with __THROW. */
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extern int rcmd_af (char **__restrict __ahost, unsigned short int __rport,
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const char *__restrict __locuser,
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const char *__restrict __remuser,
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const char *__restrict __cmd, int *__restrict __fd2p,
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sa_family_t __af);
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/* Call `rexecd' at port RPORT on remote machine *AHOST to execute
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CMD. The process runs at the remote machine using the ID of user
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NAME whose cleartext password is PASSWD. In *FD2P the descriptor
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to the socket for the connection is returned. When the function
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returns *AHOST contains the official host name.
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This function is not part of POSIX and therefore no official
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cancellation point. But due to similarity with an POSIX interface
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or due to the implementation it is a cancellation point and
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therefore not marked with __THROW. */
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extern int rexec (char **__restrict __ahost, int __rport,
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const char *__restrict __name,
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const char *__restrict __pass,
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const char *__restrict __cmd, int *__restrict __fd2p);
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/* This is the equivalent function where the protocol can be selected
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and which therefore can be used for IPv6.
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This function is not part of POSIX and therefore no official
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cancellation point. But due to similarity with an POSIX interface
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or due to the implementation it is a cancellation point and
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therefore not marked with __THROW. */
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extern int rexec_af (char **__restrict __ahost, int __rport,
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const char *__restrict __name,
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|
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 \
|
|
__glibc_macro_warning ("AI_IDN_ALLOW_UNASSIGNED is deprecated") 0x0100
|
|
# define AI_IDN_USE_STD3_ASCII_RULES \
|
|
__glibc_macro_warning ("AI_IDN_USE_STD3_ASCII_RULES is deprecated") 0x0200
|
|
# 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 \
|
|
__glibc_macro_warning ("NI_IDN_ALLOW_UNASSIGNED is deprecated") 64
|
|
# define NI_IDN_USE_STD3_ASCII_RULES \
|
|
__glibc_macro_warning ("NI_IDN_USE_STD3_ASCII_RULES is deprecated") 128
|
|
# 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);
|
|
|
|
# ifdef __USE_TIME64_REDIRECTS
|
|
# if defined(__REDIRECT)
|
|
extern int __REDIRECT (gai_suspend, (const struct gaicb *const __list[],
|
|
int __ent,
|
|
const struct timespec *__timeout),
|
|
__gai_suspend_time64);
|
|
# else
|
|
# define gai_suspend __gai_suspend_time64
|
|
# endif
|
|
# endif
|
|
|
|
/* 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 */
|