| /* Copyright (C) 1996-2002, 2003, 2004 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, 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> |
| |
| #include <netinet/in.h> |
| #include <stdint.h> |
| #ifdef __USE_MISC |
| /* This is necessary to make this include file properly replace the |
| Sun version. */ |
| # include <rpc/netdb.h> |
| #endif |
| |
| #ifdef __USE_GNU |
| # define __need_sigevent_t |
| # include <bits/siginfo.h> |
| # define __need_timespec |
| # include <time.h> |
| #endif |
| |
| #include <bits/netdb.h> |
| |
| /* Absolute file name for network data base files. */ |
| #define _PATH_HEQUIV "/etc/hosts.equiv" |
| #define _PATH_HOSTS "/etc/hosts" |
| #define _PATH_NETWORKS "/etc/networks" |
| #define _PATH_NSSWITCH_CONF "/etc/nsswitch.conf" |
| #define _PATH_PROTOCOLS "/etc/protocols" |
| #define _PATH_SERVICES "/etc/services" |
| |
| |
| __BEGIN_DECLS |
| |
| /* Error status for non-reentrant lookup functions. |
| We use a macro to access always the thread-specific `h_errno' variable. |
| We always need the extern int here in case internal libc code undefines |
| the macro because it needs access to the underlying storage. */ |
| extern int h_errno; |
| #ifdef __UCLIBC_HAS_THREADS__ |
| # define h_errno (*__h_errno_location ()) |
| #endif |
| |
| /* Function to get address of global `h_errno' variable. */ |
| extern int *__h_errno_location (void) __THROW __attribute__ ((__const__)); |
| |
| #ifdef _LIBC |
| # 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-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. */ |
| #define NO_ADDRESS NO_DATA /* No address, look for MX record. */ |
| |
| #ifdef __USE_XOPEN2K |
| /* Highest reserved Internet port number. */ |
| # define IPPORT_RESERVED 1024 |
| #endif |
| |
| #ifdef __USE_GNU |
| /* Scope delimiter for getaddrinfo(), getnameinfo(). */ |
| # define SCOPE_DELIMITER '%' |
| #endif |
| |
| /* 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; |
| |
| |
| |
| /* 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 compatibility. */ |
| }; |
| |
| /* 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); |
| |
| #if 0 |
| /* FIXME */ |
| #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 */ |
| #endif |
| |
| |
| /* 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); |
| |
| |
| #ifdef __UCLIBC_HAS_NETGROUP__ |
| /* 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 /* UCLIBC_HAS_NETGROUP */ |
| #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); |
| |
| #if 0 |
| /* FIXME */ |
| /* 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); |
| #endif |
| |
| /* 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); |
| |
| #if 0 |
| /* FIXME */ |
| /* 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); |
| #endif |
| |
| /* 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); |
| |
| #if 0 |
| /* FIXME */ |
| /* 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 |
| #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_NODATA -5 /* No address associated with NAME. */ |
| # 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_ADDRFAMILY -9 /* Address family for NAME not supported. */ |
| # 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_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 |
| |
| # define NI_MAXHOST 1025 |
| # define NI_MAXSERV 32 |
| |
| # 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, unsigned int __flags); |
| #endif /* POSIX */ |
| |
| __END_DECLS |
| |
| #endif /* netdb.h */ |
