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/* Copyright (C) 1996 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 Library General Public
License as published by the Free Software Foundation; either
version 2 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 Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with the GNU C Library; see the file COPYING.LIB. 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>
/* This is necessary to make this include file properly replace the
Sun version. */
#include <rpc/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. */
extern int h_errno;
#if defined __USE_REENTRANT && (!defined _LIBC || defined _LIBC_REENTRANT)
/* Function to access thread specific `h_errno' variable. */
extern int *__h_errno_location __P ((void)) __attribute__ ((__const__));
/* An alias name for above variable. */
extern int __h_errno;
/* Use a macro to access always the thread specific `h_errno' variable. */
#define h_errno (*__h_errno_location ())
/* Retain some binary compatibility with old libraries by having both the
global variable and the per-thread variable set on error. */
#define __set_h_errno(x) (h_errno = __h_errno = (x))
#else
#define __set_h_errno(x) (h_errno = (x))
#endif
/* 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-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. */
/* Print error indicated by `h_errno' variable on standard error. STR
if non-null is printed before the error string. */
extern void herror __P ((__const char *__str));
/* Return string associated with error ERR_NUM. */
extern __const char *hstrerror __P ((int __err_num));
/* 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 compatiblity. */
};
/* 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 __P ((int __stay_open));
/* Close host data base files and clear `stay open' flag. */
extern void endhostent __P ((void));
/* Get next entry from host data base file. Open data base if
necessary. */
extern struct hostent *gethostent __P ((void));
/* Return entry from host data base which address match ADDR with
length LEN and type TYPE. */
extern struct hostent *gethostbyaddr __P ((__const char *__addr, int __len,
int __type));
/* Return entry from host data base for host with NAME. */
extern struct hostent *gethostbyname __P ((__const char *__name));
/* Return entry from host data base for host with NAME. AF must be
set to the address type which as `AF_INET' for IPv4 or `AF_INET6'
for IPv6. */
extern struct hostent *gethostbyname2 __P ((__const char *__name, int __af));
#ifdef __USE_REENTRANT
/* 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 struct hostent *__gethostent_r __P ((struct hostent *__result_buf,
char *__buf, int __buf_len,
int *__h_errnop));
extern struct hostent *gethostent_r __P ((struct hostent *__result_buf,
char *__buf, int __buf_len,
int *__h_errnop));
extern struct hostent *__gethostbyaddr_r __P ((__const char *__addr, int __len,
int __type,
struct hostent *__result_buf,
char *__buf, int __buflen,
int *__h_errnop));
extern struct hostent *gethostbyaddr_r __P ((__const char *__addr, int __len,
int __type,
struct hostent *__result_buf,
char *__buf, int __buflen,
int *__h_errnop));
extern struct hostent *__gethostbyname_r __P ((__const char *__name,
struct hostent *__result_buf,
char *__buf, int __buflen,
int *__h_errnop));
extern struct hostent *gethostbyname_r __P ((__const char *__name,
struct hostent *__result_buf,
char *__buf, int __buflen,
int *__h_errnop));
extern struct hostent *__gethostbyname2_r __P ((__const char *__name, int __af,
struct hostent *__result_buf,
char *__buf, int __buflen,
int *__h_errnop));
extern struct hostent *gethostbyname2_r __P ((__const char *__name, int __af,
struct hostent *__result_buf,
char *__buf, int __buflen,
int *__h_errnop));
#endif /* reentrant */
/* Description of data base entry for a single network. NOTE: here a
poor assumption is made. The network number is expected to fit
into an unsigned long int variable. */
struct netent
{
char *n_name; /* Official name of network. */
char **n_aliases; /* Alias list. */
int n_addrtype; /* Net address type. */
unsigned long int n_net; /* Network number. */
};
/* 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 __P ((int __stay_open));
/* Close network data base files and clear `stay open' flag. */
extern void endnetent __P ((void));
/* Get next entry from network data base file. Open data base if
necessary. */
extern struct netent *getnetent __P ((void));
/* Return entry from network data base which address match NET and
type TYPE. */
extern struct netent *getnetbyaddr __P ((unsigned long int __net,
int __type));
/* Return entry from network data base for network with NAME. */
extern struct netent *getnetbyname __P ((__const char *__name));
#ifdef __USE_REENTRANT
/* 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 struct netent *__getnetent_r __P ((struct netent *__result_buf,
char *__buf, int __buf_len,
int *__h_errnop));
extern struct netent *getnetent_r __P ((struct netent *__result_buf,
char *__buf, int __buf_len,
int *__h_errnop));
extern struct netent *__getnetbyaddr_r __P ((unsigned long int __net,
int __type,
struct netent *__result_buf,
char *__buf, int __buflen,
int *__h_errnop));
extern struct netent *getnetbyaddr_r __P ((unsigned long int __net,
int __type,
struct netent *__result_buf,
char *__buf, int __buflen,
int *__h_errnop));
extern struct netent *__getnetbyname_r __P ((__const char *__name,
struct netent *__result_buf,
char *__buf, int __buflen,
int *__h_errnop));
extern struct netent *getnetbyname_r __P ((__const char *__name,
struct netent *__result_buf,
char *__buf, int __buflen,
int *__h_errnop));
#endif /* reentrant */
/* 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. */
extern void setservent __P ((int __stay_open));
/* Close service data base files and clear `stay open' flag. */
extern void endservent __P ((void));
/* Get next entry from service data base file. Open data base if
necessary. */
extern struct servent *getservent __P ((void));
/* Return entry from network data base for network with NAME and
protocol PROTO. */
extern struct servent *getservbyname __P ((__const char *__name,
__const char *__proto));
/* Return entry from service data base which matches port PORT and
protocol PROTO. */
extern struct servent *getservbyport __P ((int __port, __const char *__proto));
#ifdef __USE_REENTRANT
/* Reentrant versions of the functions above. The additional
arguments specify a buffer of BUFLEN starting at BUF. */
extern struct servent *__getservent_r __P ((struct servent *__result_buf,
char *__buf, int __buf_len));
extern struct servent *getservent_r __P ((struct servent *__result_buf,
char *__buf, int __buf_len));
extern struct servent *__getservbyname_r __P ((__const char *__name,
__const char *__proto,
struct servent *__result_buf,
char *__buf, int __buflen));
extern struct servent *getservbyname_r __P ((__const char *__name,
__const char *__proto,
struct servent *__result_buf,
char *__buf, int __buflen));
extern struct servent *__getservbyport_r __P ((int __port,
__const char *__proto,
struct servent *__result_buf,
char *__buf, int __buflen));
extern struct servent *getservbyport_r __P ((int __port, __const char *__proto,
struct servent *__result_buf,
char *__buf, int __buflen));
#endif /* reentrant */
/* 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. */
extern void setprotoent __P ((int __stay_open));
/* Close protocol data base files and clear `stay open' flag. */
extern void endprotoent __P ((void));
/* Get next entry from protocol data base file. Open data base if
necessary. */
extern struct protoent *getprotoent __P ((void));
/* Return entry from protocol data base for network with NAME. */
extern struct protoent *getprotobyname __P ((__const char *__name));
/* Return entry from protocol data base which number is PROTO. */
extern struct protoent *getprotobynumber __P ((int __proto));
#ifdef __USE_REENTRANT
/* Reentrant versions of the functions above. The additional
arguments specify a buffer of BUFLEN starting at BUF. */
extern struct protoent *__getprotoent_r __P ((struct protoent *__result_buf,
char *__buf, int __buf_len));
extern struct protoent *getprotoent_r __P ((struct protoent *__result_buf,
char *__buf, int __buf_len));
extern struct protoent *__getprotobyname_r __P ((__const char *__name,
struct protoent *__result_buf,
char *__buf, int __buflen));
extern struct protoent *getprotobyname_r __P ((__const char *__name,
struct protoent *__result_buf,
char *__buf, int __buflen));
extern struct protoent *__getprotobynumber_r __P ((int __proto,
struct protoent *__res_buf,
char *__buf, int __buflen));
extern struct protoent *getprotobynumber_r __P ((int __proto,
struct protoent *__result_buf,
char *__buf, int __buflen));
#endif /* reentrant */
/* Establish network group NETGROUP for enumeration. */
extern int setnetgrent __P ((__const char *__netgroup));
/* Free all space allocated by previous `setnetgrent' call. */
extern void endnetgrent __P ((void));
/* Get next member of netgroup established by last `setnetgrent' call
and return pointers to elements in HOSTP, USERP, and DOMAINP. */
extern int getnetgrent __P ((char **__hostp, char **__userp,
char **__domainp));
/* Test whether NETGROUP contains the triple (HOST,USER,DOMAIN). */
extern int innetgr __P ((__const char *__netgroup, __const char *__host,
__const char *__user, __const char *domain));
#ifdef __USE_REENTRANT
/* Reentrant version of `getnetgrent' where result is placed in BUFFER. */
extern int __getnetgrent_r __P ((char **__hostp, char **__userp,
char **__domainp,
char *__buffer, int __buflen));
extern int getnetgrent_r __P ((char **__hostp, char **__userp,
char **__domainp,
char *__buffer, int __buflen));
#endif
__END_DECLS
#endif /* netdb.h */
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