Line data Source code
1 : /* Copyright (C) 1996-2022 Free Software Foundation, Inc.
2 : This file is part of the GNU C Library.
3 :
4 : The GNU C Library is free software; you can redistribute it and/or
5 : modify it under the terms of the GNU Lesser General Public
6 : License as published by the Free Software Foundation; either
7 : version 2.1 of the License, or (at your option) any later version.
8 :
9 : The GNU C Library is distributed in the hope that it will be useful,
10 : but WITHOUT ANY WARRANTY; without even the implied warranty of
11 : MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 : Lesser General Public License for more details.
13 :
14 : You should have received a copy of the GNU Lesser General Public
15 : License along with the GNU C Library; if not, see
16 : <https://www.gnu.org/licenses/>. */
17 :
18 : /* All data returned by the network data base library are supplied in
19 : host order and returned in network order (suitable for use in
20 : system calls). */
21 :
22 : #ifndef _NETDB_H
23 : #define _NETDB_H 1
24 :
25 : #include <features.h>
26 :
27 : #include <netinet/in.h>
28 : #include <bits/stdint-uintn.h>
29 : #ifdef __USE_MISC
30 : /* This is necessary to make this include file properly replace the
31 : Sun version. */
32 : # include <rpc/netdb.h>
33 : #endif
34 :
35 : #ifdef __USE_GNU
36 : # include <bits/types/sigevent_t.h>
37 : # include <bits/types/struct_timespec.h>
38 : #endif
39 :
40 : #include <bits/netdb.h>
41 :
42 : /* Absolute file name for network data base files. */
43 : #define _PATH_HEQUIV "/etc/hosts.equiv"
44 : #define _PATH_HOSTS "/etc/hosts"
45 : #define _PATH_NETWORKS "/etc/networks"
46 : #define _PATH_NSSWITCH_CONF "/etc/nsswitch.conf"
47 : #define _PATH_PROTOCOLS "/etc/protocols"
48 : #define _PATH_SERVICES "/etc/services"
49 :
50 :
51 : __BEGIN_DECLS
52 :
53 : #if defined __USE_MISC || !defined __USE_XOPEN2K8
54 : /* Error status for non-reentrant lookup functions.
55 : We use a macro to access always the thread-specific `h_errno' variable. */
56 : # define h_errno (*__h_errno_location ())
57 :
58 : /* Function to get address of global `h_errno' variable. */
59 : extern int *__h_errno_location (void) __THROW __attribute__ ((__const__));
60 :
61 :
62 : /* Possible values left in `h_errno'. */
63 : # define HOST_NOT_FOUND 1 /* Authoritative Answer Host not found. */
64 : # define TRY_AGAIN 2 /* Non-Authoritative Host not found,
65 : or SERVERFAIL. */
66 : # define NO_RECOVERY 3 /* Non recoverable errors, FORMERR, REFUSED,
67 : NOTIMP. */
68 : # define NO_DATA 4 /* Valid name, no data record of requested
69 : type. */
70 : #endif
71 : #ifdef __USE_MISC
72 : # define NETDB_INTERNAL -1 /* See errno. */
73 : # define NETDB_SUCCESS 0 /* No problem. */
74 : # define NO_ADDRESS NO_DATA /* No address, look for MX record. */
75 : #endif
76 :
77 : #if defined __USE_XOPEN2K || defined __USE_XOPEN_EXTENDED
78 : /* Highest reserved Internet port number. */
79 : # define IPPORT_RESERVED 1024
80 : #endif
81 :
82 : #ifdef __USE_GNU
83 : /* Scope delimiter for getaddrinfo(), getnameinfo(). */
84 : # define SCOPE_DELIMITER '%'
85 : #endif
86 :
87 : #ifdef __USE_MISC
88 : /* Print error indicated by `h_errno' variable on standard error. STR
89 : if non-null is printed before the error string. */
90 : extern void herror (const char *__str) __THROW;
91 :
92 : /* Return string associated with error ERR_NUM. */
93 : extern const char *hstrerror (int __err_num) __THROW;
94 : #endif
95 :
96 :
97 : /* Description of data base entry for a single host. */
98 : struct hostent
99 : {
100 : char *h_name; /* Official name of host. */
101 : char **h_aliases; /* Alias list. */
102 : int h_addrtype; /* Host address type. */
103 : int h_length; /* Length of address. */
104 : char **h_addr_list; /* List of addresses from name server. */
105 : #ifdef __USE_MISC
106 : # define h_addr h_addr_list[0] /* Address, for backward compatibility.*/
107 : #endif
108 : };
109 :
110 : /* Open host data base files and mark them as staying open even after
111 : a later search if STAY_OPEN is non-zero.
112 :
113 : This function is a possible cancellation point and therefore not
114 : marked with __THROW. */
115 0 : extern void sethostent (int __stay_open);
116 :
117 : /* Close host data base files and clear `stay open' flag.
118 :
119 : This function is a possible cancellation point and therefore not
120 : marked with __THROW. */
121 0 : extern void endhostent (void);
122 :
123 : /* Get next entry from host data base file. Open data base if
124 : necessary.
125 :
126 : This function is a possible cancellation point and therefore not
127 : marked with __THROW. */
128 0 : extern struct hostent *gethostent (void);
129 :
130 : /* Return entry from host data base which address match ADDR with
131 : length LEN and type TYPE.
132 :
133 : This function is a possible cancellation point and therefore not
134 : marked with __THROW. */
135 0 : extern struct hostent *gethostbyaddr (const void *__addr, __socklen_t __len,
136 : int __type);
137 :
138 : /* Return entry from host data base for host with NAME.
139 :
140 : This function is a possible cancellation point and therefore not
141 : marked with __THROW. */
142 0 : extern struct hostent *gethostbyname (const char *__name);
143 :
144 : #ifdef __USE_MISC
145 : /* Return entry from host data base for host with NAME. AF must be
146 : set to the address type which is `AF_INET' for IPv4 or `AF_INET6'
147 : for IPv6.
148 :
149 : This function is not part of POSIX and therefore no official
150 : cancellation point. But due to similarity with an POSIX interface
151 : or due to the implementation it is a cancellation point and
152 : therefore not marked with __THROW. */
153 0 : extern struct hostent *gethostbyname2 (const char *__name, int __af);
154 :
155 : /* Reentrant versions of the functions above. The additional
156 : arguments specify a buffer of BUFLEN starting at BUF. The last
157 : argument is a pointer to a variable which gets the value which
158 : would be stored in the global variable `herrno' by the
159 : non-reentrant functions.
160 :
161 : These functions are not part of POSIX and therefore no official
162 : cancellation point. But due to similarity with an POSIX interface
163 : or due to the implementation they are cancellation points and
164 : therefore not marked with __THROW. */
165 : extern int gethostent_r (struct hostent *__restrict __result_buf,
166 : char *__restrict __buf, size_t __buflen,
167 : struct hostent **__restrict __result,
168 : int *__restrict __h_errnop);
169 :
170 6 : extern int gethostbyaddr_r (const void *__restrict __addr, __socklen_t __len,
171 : int __type,
172 : struct hostent *__restrict __result_buf,
173 : char *__restrict __buf, size_t __buflen,
174 : struct hostent **__restrict __result,
175 : int *__restrict __h_errnop);
176 :
177 0 : extern int gethostbyname_r (const char *__restrict __name,
178 : struct hostent *__restrict __result_buf,
179 : char *__restrict __buf, size_t __buflen,
180 : struct hostent **__restrict __result,
181 : int *__restrict __h_errnop);
182 :
183 0 : extern int gethostbyname2_r (const char *__restrict __name, int __af,
184 : struct hostent *__restrict __result_buf,
185 : char *__restrict __buf, size_t __buflen,
186 : struct hostent **__restrict __result,
187 : int *__restrict __h_errnop);
188 : #endif /* misc */
189 :
190 :
191 : /* Open network data base files and mark them as staying open even
192 : after a later search if STAY_OPEN is non-zero.
193 :
194 : This function is a possible cancellation point and therefore not
195 : marked with __THROW. */
196 : extern void setnetent (int __stay_open);
197 :
198 : /* Close network data base files and clear `stay open' flag.
199 :
200 : This function is a possible cancellation point and therefore not
201 : marked with __THROW. */
202 : extern void endnetent (void);
203 :
204 : /* Get next entry from network data base file. Open data base if
205 : necessary.
206 :
207 : This function is a possible cancellation point and therefore not
208 : marked with __THROW. */
209 : extern struct netent *getnetent (void);
210 :
211 : /* Return entry from network data base which address match NET and
212 : type TYPE.
213 :
214 : This function is a possible cancellation point and therefore not
215 : marked with __THROW. */
216 : extern struct netent *getnetbyaddr (uint32_t __net, int __type);
217 :
218 : /* Return entry from network data base for network with NAME.
219 :
220 : This function is a possible cancellation point and therefore not
221 : marked with __THROW. */
222 : extern struct netent *getnetbyname (const char *__name);
223 :
224 : #ifdef __USE_MISC
225 : /* Reentrant versions of the functions above. The additional
226 : arguments specify a buffer of BUFLEN starting at BUF. The last
227 : argument is a pointer to a variable which gets the value which
228 : would be stored in the global variable `herrno' by the
229 : non-reentrant functions.
230 :
231 : These functions are not part of POSIX and therefore no official
232 : cancellation point. But due to similarity with an POSIX interface
233 : or due to the implementation they are cancellation points and
234 : therefore not marked with __THROW. */
235 : extern int getnetent_r (struct netent *__restrict __result_buf,
236 : char *__restrict __buf, size_t __buflen,
237 : struct netent **__restrict __result,
238 : int *__restrict __h_errnop);
239 :
240 : extern int getnetbyaddr_r (uint32_t __net, int __type,
241 : struct netent *__restrict __result_buf,
242 : char *__restrict __buf, size_t __buflen,
243 : struct netent **__restrict __result,
244 : int *__restrict __h_errnop);
245 :
246 : extern int getnetbyname_r (const char *__restrict __name,
247 : struct netent *__restrict __result_buf,
248 : char *__restrict __buf, size_t __buflen,
249 : struct netent **__restrict __result,
250 : int *__restrict __h_errnop);
251 : #endif /* misc */
252 :
253 :
254 : /* Description of data base entry for a single service. */
255 : struct servent
256 : {
257 : char *s_name; /* Official service name. */
258 : char **s_aliases; /* Alias list. */
259 : int s_port; /* Port number. */
260 : char *s_proto; /* Protocol to use. */
261 : };
262 :
263 : /* Open service data base files and mark them as staying open even
264 : after a later search if STAY_OPEN is non-zero.
265 :
266 : This function is a possible cancellation point and therefore not
267 : marked with __THROW. */
268 : extern void setservent (int __stay_open);
269 :
270 : /* Close service data base files and clear `stay open' flag.
271 :
272 : This function is a possible cancellation point and therefore not
273 : marked with __THROW. */
274 : extern void endservent (void);
275 :
276 : /* Get next entry from service data base file. Open data base if
277 : necessary.
278 :
279 : This function is a possible cancellation point and therefore not
280 : marked with __THROW. */
281 : extern struct servent *getservent (void);
282 :
283 : /* Return entry from network data base for network with NAME and
284 : protocol PROTO.
285 :
286 : This function is a possible cancellation point and therefore not
287 : marked with __THROW. */
288 : extern struct servent *getservbyname (const char *__name, const char *__proto);
289 :
290 : /* Return entry from service data base which matches port PORT and
291 : protocol PROTO.
292 :
293 : This function is a possible cancellation point and therefore not
294 : marked with __THROW. */
295 : extern struct servent *getservbyport (int __port, const char *__proto);
296 :
297 :
298 : #ifdef __USE_MISC
299 : /* Reentrant versions of the functions above. The additional
300 : arguments specify a buffer of BUFLEN starting at BUF.
301 :
302 : These functions are not part of POSIX and therefore no official
303 : cancellation point. But due to similarity with an POSIX interface
304 : or due to the implementation they are cancellation points and
305 : therefore not marked with __THROW. */
306 : extern int getservent_r (struct servent *__restrict __result_buf,
307 : char *__restrict __buf, size_t __buflen,
308 : struct servent **__restrict __result);
309 :
310 : extern int getservbyname_r (const char *__restrict __name,
311 : const char *__restrict __proto,
312 : struct servent *__restrict __result_buf,
313 : char *__restrict __buf, size_t __buflen,
314 : struct servent **__restrict __result);
315 :
316 : extern int getservbyport_r (int __port, const char *__restrict __proto,
317 : struct servent *__restrict __result_buf,
318 : char *__restrict __buf, size_t __buflen,
319 : struct servent **__restrict __result);
320 : #endif /* misc */
321 :
322 :
323 : /* Description of data base entry for a single service. */
324 : struct protoent
325 : {
326 : char *p_name; /* Official protocol name. */
327 : char **p_aliases; /* Alias list. */
328 : int p_proto; /* Protocol number. */
329 : };
330 :
331 : /* Open protocol data base files and mark them as staying open even
332 : after a later search if STAY_OPEN is non-zero.
333 :
334 : This function is a possible cancellation point and therefore not
335 : marked with __THROW. */
336 : extern void setprotoent (int __stay_open);
337 :
338 : /* Close protocol data base files and clear `stay open' flag.
339 :
340 : This function is a possible cancellation point and therefore not
341 : marked with __THROW. */
342 : extern void endprotoent (void);
343 :
344 : /* Get next entry from protocol data base file. Open data base if
345 : necessary.
346 :
347 : This function is a possible cancellation point and therefore not
348 : marked with __THROW. */
349 : extern struct protoent *getprotoent (void);
350 :
351 : /* Return entry from protocol data base for network with NAME.
352 :
353 : This function is a possible cancellation point and therefore not
354 : marked with __THROW. */
355 : extern struct protoent *getprotobyname (const char *__name);
356 :
357 : /* Return entry from protocol data base which number is PROTO.
358 :
359 : This function is a possible cancellation point and therefore not
360 : marked with __THROW. */
361 : extern struct protoent *getprotobynumber (int __proto);
362 :
363 :
364 : #ifdef __USE_MISC
365 : /* Reentrant versions of the functions above. The additional
366 : arguments specify a buffer of BUFLEN starting at BUF.
367 :
368 : These functions are not part of POSIX and therefore no official
369 : cancellation point. But due to similarity with an POSIX interface
370 : or due to the implementation they are cancellation points and
371 : therefore not marked with __THROW. */
372 : extern int getprotoent_r (struct protoent *__restrict __result_buf,
373 : char *__restrict __buf, size_t __buflen,
374 : struct protoent **__restrict __result);
375 :
376 : extern int getprotobyname_r (const char *__restrict __name,
377 : struct protoent *__restrict __result_buf,
378 : char *__restrict __buf, size_t __buflen,
379 : struct protoent **__restrict __result);
380 :
381 : extern int getprotobynumber_r (int __proto,
382 : struct protoent *__restrict __result_buf,
383 : char *__restrict __buf, size_t __buflen,
384 : struct protoent **__restrict __result);
385 :
386 :
387 : /* Establish network group NETGROUP for enumeration.
388 :
389 : This function is not part of POSIX and therefore no official
390 : cancellation point. But due to similarity with an POSIX interface
391 : or due to the implementation it is a cancellation point and
392 : therefore not marked with __THROW. */
393 : extern int setnetgrent (const char *__netgroup);
394 :
395 : /* Free all space allocated by previous `setnetgrent' call.
396 :
397 : This function is not part of POSIX and therefore no official
398 : cancellation point. But due to similarity with an POSIX interface
399 : or due to the implementation it is a cancellation point and
400 : therefore not marked with __THROW. */
401 : extern void endnetgrent (void);
402 :
403 : /* Get next member of netgroup established by last `setnetgrent' call
404 : and return pointers to elements in HOSTP, USERP, and DOMAINP.
405 :
406 : This function is not part of POSIX and therefore no official
407 : cancellation point. But due to similarity with an POSIX interface
408 : or due to the implementation it is a cancellation point and
409 : therefore not marked with __THROW. */
410 : extern int getnetgrent (char **__restrict __hostp,
411 : char **__restrict __userp,
412 : char **__restrict __domainp);
413 :
414 :
415 : /* Test whether NETGROUP contains the triple (HOST,USER,DOMAIN).
416 :
417 : This function is not part of POSIX and therefore no official
418 : cancellation point. But due to similarity with an POSIX interface
419 : or due to the implementation it is a cancellation point and
420 : therefore not marked with __THROW. */
421 : extern int innetgr (const char *__netgroup, const char *__host,
422 : const char *__user, const char *__domain);
423 :
424 : /* Reentrant version of `getnetgrent' where result is placed in BUFFER.
425 :
426 : This function is not part of POSIX and therefore no official
427 : cancellation point. But due to similarity with an POSIX interface
428 : or due to the implementation it is a cancellation point and
429 : therefore not marked with __THROW. */
430 : extern int getnetgrent_r (char **__restrict __hostp,
431 : char **__restrict __userp,
432 : char **__restrict __domainp,
433 : char *__restrict __buffer, size_t __buflen);
434 : #endif /* misc */
435 :
436 :
437 : #ifdef __USE_MISC
438 : /* Call `rshd' at port RPORT on remote machine *AHOST to execute CMD.
439 : The local user is LOCUSER, on the remote machine the command is
440 : executed as REMUSER. In *FD2P the descriptor to the socket for the
441 : connection is returned. The caller must have the right to use a
442 : reserved port. When the function returns *AHOST contains the
443 : official host name.
444 :
445 : This function is not part of POSIX and therefore no official
446 : cancellation point. But due to similarity with an POSIX interface
447 : or due to the implementation it is a cancellation point and
448 : therefore not marked with __THROW. */
449 : extern int rcmd (char **__restrict __ahost, unsigned short int __rport,
450 : const char *__restrict __locuser,
451 : const char *__restrict __remuser,
452 : const char *__restrict __cmd, int *__restrict __fd2p);
453 :
454 : /* This is the equivalent function where the protocol can be selected
455 : and which therefore can be used for IPv6.
456 :
457 : This function is not part of POSIX and therefore no official
458 : cancellation point. But due to similarity with an POSIX interface
459 : or due to the implementation it is a cancellation point and
460 : therefore not marked with __THROW. */
461 : extern int rcmd_af (char **__restrict __ahost, unsigned short int __rport,
462 : const char *__restrict __locuser,
463 : const char *__restrict __remuser,
464 : const char *__restrict __cmd, int *__restrict __fd2p,
465 : sa_family_t __af);
466 :
467 : /* Call `rexecd' at port RPORT on remote machine *AHOST to execute
468 : CMD. The process runs at the remote machine using the ID of user
469 : NAME whose cleartext password is PASSWD. In *FD2P the descriptor
470 : to the socket for the connection is returned. When the function
471 : returns *AHOST contains the official host name.
472 :
473 : This function is not part of POSIX and therefore no official
474 : cancellation point. But due to similarity with an POSIX interface
475 : or due to the implementation it is a cancellation point and
476 : therefore not marked with __THROW. */
477 : extern int rexec (char **__restrict __ahost, int __rport,
478 : const char *__restrict __name,
479 : const char *__restrict __pass,
480 : const char *__restrict __cmd, int *__restrict __fd2p);
481 :
482 : /* This is the equivalent function where the protocol can be selected
483 : and which therefore can be used for IPv6.
484 :
485 : This function is not part of POSIX and therefore no official
486 : cancellation point. But due to similarity with an POSIX interface
487 : or due to the implementation it is a cancellation point and
488 : therefore not marked with __THROW. */
489 : extern int rexec_af (char **__restrict __ahost, int __rport,
490 : const char *__restrict __name,
491 : const char *__restrict __pass,
492 : const char *__restrict __cmd, int *__restrict __fd2p,
493 : sa_family_t __af);
494 :
495 : /* Check whether user REMUSER on system RHOST is allowed to login as LOCUSER.
496 : If SUSER is not zero the user tries to become superuser. Return 0 if
497 : it is possible.
498 :
499 : This function is not part of POSIX and therefore no official
500 : cancellation point. But due to similarity with an POSIX interface
501 : or due to the implementation it is a cancellation point and
502 : therefore not marked with __THROW. */
503 : extern int ruserok (const char *__rhost, int __suser,
504 : const char *__remuser, const char *__locuser);
505 :
506 : /* This is the equivalent function where the protocol can be selected
507 : and which therefore can be used for IPv6.
508 :
509 : This function is not part of POSIX and therefore no official
510 : cancellation point. But due to similarity with an POSIX interface
511 : or due to the implementation it is a cancellation point and
512 : therefore not marked with __THROW. */
513 : extern int ruserok_af (const char *__rhost, int __suser,
514 : const char *__remuser, const char *__locuser,
515 : sa_family_t __af);
516 :
517 : /* Check whether user REMUSER on system indicated by IPv4 address
518 : RADDR is allowed to login as LOCUSER. Non-IPv4 (e.g., IPv6) are
519 : not supported. If SUSER is not zero the user tries to become
520 : superuser. Return 0 if it is possible.
521 :
522 : This function is not part of POSIX and therefore no official
523 : cancellation point. But due to similarity with an POSIX interface
524 : or due to the implementation it is a cancellation point and
525 : therefore not marked with __THROW. */
526 : extern int iruserok (uint32_t __raddr, int __suser,
527 : const char *__remuser, const char *__locuser);
528 :
529 : /* This is the equivalent function where the pfamiliy if the address
530 : pointed to by RADDR is determined by the value of AF. It therefore
531 : can be used for IPv6
532 :
533 : This function is not part of POSIX and therefore no official
534 : cancellation point. But due to similarity with an POSIX interface
535 : or due to the implementation it is a cancellation point and
536 : therefore not marked with __THROW. */
537 : extern int iruserok_af (const void *__raddr, int __suser,
538 : const char *__remuser, const char *__locuser,
539 : sa_family_t __af);
540 :
541 : /* Try to allocate reserved port, returning a descriptor for a socket opened
542 : at this port or -1 if unsuccessful. The search for an available port
543 : will start at ALPORT and continues with lower numbers.
544 :
545 : This function is not part of POSIX and therefore no official
546 : cancellation point. But due to similarity with an POSIX interface
547 : or due to the implementation it is a cancellation point and
548 : therefore not marked with __THROW. */
549 : extern int rresvport (int *__alport);
550 :
551 : /* This is the equivalent function where the protocol can be selected
552 : and which therefore can be used for IPv6.
553 :
554 : This function is not part of POSIX and therefore no official
555 : cancellation point. But due to similarity with an POSIX interface
556 : or due to the implementation it is a cancellation point and
557 : therefore not marked with __THROW. */
558 : extern int rresvport_af (int *__alport, sa_family_t __af);
559 : #endif
560 :
561 :
562 : /* Extension from POSIX.1:2001. */
563 : #ifdef __USE_XOPEN2K
564 : /* Structure to contain information about address of a service provider. */
565 : struct addrinfo
566 : {
567 : int ai_flags; /* Input flags. */
568 : int ai_family; /* Protocol family for socket. */
569 : int ai_socktype; /* Socket type. */
570 : int ai_protocol; /* Protocol for socket. */
571 : socklen_t ai_addrlen; /* Length of socket address. */
572 : struct sockaddr *ai_addr; /* Socket address for socket. */
573 : char *ai_canonname; /* Canonical name for service location. */
574 : struct addrinfo *ai_next; /* Pointer to next in list. */
575 : };
576 :
577 : # ifdef __USE_GNU
578 : /* Structure used as control block for asynchronous lookup. */
579 : struct gaicb
580 : {
581 : const char *ar_name; /* Name to look up. */
582 : const char *ar_service; /* Service name. */
583 : const struct addrinfo *ar_request; /* Additional request specification. */
584 : struct addrinfo *ar_result; /* Pointer to result. */
585 : /* The following are internal elements. */
586 : int __return;
587 : int __glibc_reserved[5];
588 : };
589 :
590 : /* Lookup mode. */
591 : # define GAI_WAIT 0
592 : # define GAI_NOWAIT 1
593 : # endif
594 :
595 : /* Possible values for `ai_flags' field in `addrinfo' structure. */
596 : # define AI_PASSIVE 0x0001 /* Socket address is intended for `bind'. */
597 : # define AI_CANONNAME 0x0002 /* Request for canonical name. */
598 : # define AI_NUMERICHOST 0x0004 /* Don't use name resolution. */
599 : # define AI_V4MAPPED 0x0008 /* IPv4 mapped addresses are acceptable. */
600 : # define AI_ALL 0x0010 /* Return IPv4 mapped and IPv6 addresses. */
601 : # define AI_ADDRCONFIG 0x0020 /* Use configuration of this host to choose
602 : returned address type.. */
603 : # ifdef __USE_GNU
604 : # define AI_IDN 0x0040 /* IDN encode input (assuming it is encoded
605 : in the current locale's character set)
606 : before looking it up. */
607 : # define AI_CANONIDN 0x0080 /* Translate canonical name from IDN format. */
608 : # define AI_IDN_ALLOW_UNASSIGNED \
609 : __glibc_macro_warning ("AI_IDN_ALLOW_UNASSIGNED is deprecated") 0x0100
610 : # define AI_IDN_USE_STD3_ASCII_RULES \
611 : __glibc_macro_warning ("AI_IDN_USE_STD3_ASCII_RULES is deprecated") 0x0200
612 : # endif
613 : # define AI_NUMERICSERV 0x0400 /* Don't use name resolution. */
614 :
615 : /* Error values for `getaddrinfo' function. */
616 : # define EAI_BADFLAGS -1 /* Invalid value for `ai_flags' field. */
617 : # define EAI_NONAME -2 /* NAME or SERVICE is unknown. */
618 : # define EAI_AGAIN -3 /* Temporary failure in name resolution. */
619 : # define EAI_FAIL -4 /* Non-recoverable failure in name res. */
620 : # define EAI_FAMILY -6 /* `ai_family' not supported. */
621 : # define EAI_SOCKTYPE -7 /* `ai_socktype' not supported. */
622 : # define EAI_SERVICE -8 /* SERVICE not supported for `ai_socktype'. */
623 : # define EAI_MEMORY -10 /* Memory allocation failure. */
624 : # define EAI_SYSTEM -11 /* System error returned in `errno'. */
625 : # define EAI_OVERFLOW -12 /* Argument buffer overflow. */
626 : # ifdef __USE_GNU
627 : # define EAI_NODATA -5 /* No address associated with NAME. */
628 : # define EAI_ADDRFAMILY -9 /* Address family for NAME not supported. */
629 : # define EAI_INPROGRESS -100 /* Processing request in progress. */
630 : # define EAI_CANCELED -101 /* Request canceled. */
631 : # define EAI_NOTCANCELED -102 /* Request not canceled. */
632 : # define EAI_ALLDONE -103 /* All requests done. */
633 : # define EAI_INTR -104 /* Interrupted by a signal. */
634 : # define EAI_IDN_ENCODE -105 /* IDN encoding failed. */
635 : # endif
636 :
637 : # ifdef __USE_MISC
638 : # define NI_MAXHOST 1025
639 : # define NI_MAXSERV 32
640 : # endif
641 :
642 : # define NI_NUMERICHOST 1 /* Don't try to look up hostname. */
643 : # define NI_NUMERICSERV 2 /* Don't convert port number to name. */
644 : # define NI_NOFQDN 4 /* Only return nodename portion. */
645 : # define NI_NAMEREQD 8 /* Don't return numeric addresses. */
646 : # define NI_DGRAM 16 /* Look up UDP service rather than TCP. */
647 : # ifdef __USE_GNU
648 : # define NI_IDN 32 /* Convert name from IDN format. */
649 : # define NI_IDN_ALLOW_UNASSIGNED \
650 : __glibc_macro_warning ("NI_IDN_ALLOW_UNASSIGNED is deprecated") 64
651 : # define NI_IDN_USE_STD3_ASCII_RULES \
652 : __glibc_macro_warning ("NI_IDN_USE_STD3_ASCII_RULES is deprecated") 128
653 : # endif
654 :
655 : /* Translate name of a service location and/or a service name to set of
656 : socket addresses.
657 :
658 : This function is a possible cancellation point and therefore not
659 : marked with __THROW. */
660 1510936 : extern int getaddrinfo (const char *__restrict __name,
661 : const char *__restrict __service,
662 : const struct addrinfo *__restrict __req,
663 : struct addrinfo **__restrict __pai);
664 :
665 : /* Free `addrinfo' structure AI including associated storage. */
666 : extern void freeaddrinfo (struct addrinfo *__ai) __THROW;
667 :
668 : /* Convert error return from getaddrinfo() to a string. */
669 : extern const char *gai_strerror (int __ecode) __THROW;
670 :
671 : /* Translate a socket address to a location and service name.
672 :
673 : This function is a possible cancellation point and therefore not
674 : marked with __THROW. */
675 2318221 : extern int getnameinfo (const struct sockaddr *__restrict __sa,
676 : socklen_t __salen, char *__restrict __host,
677 : socklen_t __hostlen, char *__restrict __serv,
678 : socklen_t __servlen, int __flags);
679 : #endif /* POSIX */
680 :
681 : #ifdef __USE_GNU
682 : /* Enqueue ENT requests from the LIST. If MODE is GAI_WAIT wait until all
683 : requests are handled. If WAIT is GAI_NOWAIT return immediately after
684 : queueing the requests and signal completion according to SIG.
685 :
686 : This function is not part of POSIX and therefore no official
687 : cancellation point. But due to similarity with an POSIX interface
688 : or due to the implementation it is a cancellation point and
689 : therefore not marked with __THROW. */
690 : extern int getaddrinfo_a (int __mode, struct gaicb *__list[__restrict_arr],
691 : int __ent, struct sigevent *__restrict __sig);
692 :
693 : /* Suspend execution of the thread until at least one of the ENT requests
694 : in LIST is handled. If TIMEOUT is not a null pointer it specifies the
695 : longest time the function keeps waiting before returning with an error.
696 :
697 : This function is not part of POSIX and therefore no official
698 : cancellation point. But due to similarity with an POSIX interface
699 : or due to the implementation it is a cancellation point and
700 : therefore not marked with __THROW. */
701 : extern int gai_suspend (const struct gaicb *const __list[], int __ent,
702 : const struct timespec *__timeout);
703 :
704 : # ifdef __USE_TIME_BITS64
705 : # if defined(__REDIRECT)
706 : extern int __REDIRECT (gai_suspend, (const struct gaicb *const __list[],
707 : int __ent,
708 : const struct timespec *__timeout),
709 : __gai_suspend_time64);
710 : # else
711 : # define gai_suspend __gai_suspend_time64
712 : # endif
713 : # endif
714 :
715 : /* Get the error status of the request REQ. */
716 : extern int gai_error (struct gaicb *__req) __THROW;
717 :
718 : /* Cancel the requests associated with GAICBP. */
719 : extern int gai_cancel (struct gaicb *__gaicbp) __THROW;
720 : #endif /* GNU */
721 :
722 : __END_DECLS
723 :
724 : #endif /* netdb.h */
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