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8 _I|+a4()P@ S ? /* Copyright (C) 1996-2021 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
. */
/* 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
#include
#include
#ifdef __USE_MISC
/* This is necessary to make this include file properly replace the
Sun version. */
# include
#endif
#ifdef __USE_GNU
# include
# include
#endif
#include
/* 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