| /* AKAROS_PORT: copied from resolv/, with minor modifications.  We don't build | 
 |  * resolv, but we still needed this header file. */ | 
 |  | 
 |   /* Copyright (C) 1996-2014 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 <stdint.h> | 
 |  | 
 | /* 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.  */ | 
 |   uint32_t n_net;		/* Network number.  */ | 
 | }; | 
 |  | 
 | /* 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 | 
 | #if defined __USE_MISC || defined __USE_GNU | 
 | # 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.  */ | 
 | #if defined __USE_MISC || defined __USE_GNU | 
 | # 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_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. | 
 |  | 
 |    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.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.  */ | 
 | }; | 
 |  | 
 | /* 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 */ | 
 |  | 
 | __END_DECLS | 
 |  | 
 | #endif	/* netdb.h */ |