1/*
2 * Copyright (c) 1985, 1989, 1993
3 * The Regents of the University of California. All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 4. Neither the name of the University nor the names of its contributors
14 * may be used to endorse or promote products derived from this software
15 * without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * SUCH DAMAGE.
28 */
29
30/*
31 * Portions Copyright (c) 1993 by Digital Equipment Corporation.
32 *
33 * Permission to use, copy, modify, and distribute this software for any
34 * purpose with or without fee is hereby granted, provided that the above
35 * copyright notice and this permission notice appear in all copies, and that
36 * the name of Digital Equipment Corporation not be used in advertising or
37 * publicity pertaining to distribution of the document or software without
38 * specific, written prior permission.
39 *
40 * THE SOFTWARE IS PROVIDED "AS IS" AND DIGITAL EQUIPMENT CORP. DISCLAIMS ALL
41 * WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES
42 * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL DIGITAL EQUIPMENT
43 * CORPORATION BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
44 * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
45 * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
46 * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
47 * SOFTWARE.
48 */
49
50/*
51 * Portions Copyright (c) 1996-1999 by Internet Software Consortium.
52 *
53 * Permission to use, copy, modify, and distribute this software for any
54 * purpose with or without fee is hereby granted, provided that the above
55 * copyright notice and this permission notice appear in all copies.
56 *
57 * THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM DISCLAIMS
58 * ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES
59 * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL INTERNET SOFTWARE
60 * CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
61 * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
62 * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
63 * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
64 * SOFTWARE.
65 */
66
67#if defined(LIBC_SCCS) && !defined(lint)
68static const char sccsid[] = "@(#)res_init.c 8.1 (Berkeley) 6/7/93";
69static const char rcsid[] = "$BINDId: res_init.c,v 8.16 2000/05/09 07:10:12 vixie Exp $";
70#endif /* LIBC_SCCS and not lint */
71
72#include <ctype.h>
73#include <netdb.h>
74#include <resolv.h>
75#include <stdio.h>
76#include <stdio_ext.h>
77#include <stdlib.h>
78#include <string.h>
79#include <unistd.h>
80#include <stdint.h>
81#include <arpa/inet.h>
82#include <arpa/nameser.h>
83#include <net/if.h>
84#include <netinet/in.h>
85#include <sys/param.h>
86#include <sys/socket.h>
87#include <sys/time.h>
88#include <sys/types.h>
89
90#include <not-cancel.h>
91
92/* Options. Should all be left alone. */
93#define RESOLVSORT
94#define RFC1535
95/* #undef DEBUG */
96
97static void res_setoptions (res_state, const char *, const char *)
98 internal_function;
99
100#ifdef RESOLVSORT
101static const char sort_mask_chars[] = "/&";
102#define ISSORTMASK(ch) (strchr(sort_mask_chars, ch) != NULL)
103static u_int32_t net_mask (struct in_addr) __THROW;
104#endif
105
106#if !defined(isascii) /* XXX - could be a function */
107# define isascii(c) (!(c & 0200))
108#endif
109
110#ifdef _LIBC
111unsigned long long int __res_initstamp attribute_hidden;
112#endif
113
114/*
115 * Resolver state default settings.
116 */
117
118/*
119 * Set up default settings. If the configuration file exist, the values
120 * there will have precedence. Otherwise, the server address is set to
121 * INADDR_ANY and the default domain name comes from the gethostname().
122 *
123 * An interrim version of this code (BIND 4.9, pre-4.4BSD) used 127.0.0.1
124 * rather than INADDR_ANY ("0.0.0.0") as the default name server address
125 * since it was noted that INADDR_ANY actually meant ``the first interface
126 * you "ifconfig"'d at boot time'' and if this was a SLIP or PPP interface,
127 * it had to be "up" in order for you to reach your own name server. It
128 * was later decided that since the recommended practice is to always
129 * install local static routes through 127.0.0.1 for all your network
130 * interfaces, that we could solve this problem without a code change.
131 *
132 * The configuration file should always be used, since it is the only way
133 * to specify a default domain. If you are running a server on your local
134 * machine, you should say "nameserver 0.0.0.0" or "nameserver 127.0.0.1"
135 * in the configuration file.
136 *
137 * Return 0 if completes successfully, -1 on error
138 */
139int
140res_ninit(res_state statp) {
141 extern int __res_vinit(res_state, int);
142
143 return (__res_vinit(statp, 0));
144}
145#ifdef _LIBC
146libc_hidden_def (__res_ninit)
147#endif
148
149/* This function has to be reachable by res_data.c but not publically. */
150int
151__res_vinit(res_state statp, int preinit) {
152 FILE *fp;
153 char *cp, **pp;
154 int n;
155 char buf[BUFSIZ];
156 int nserv = 0; /* number of nameservers read from file */
157 int have_serv6 = 0;
158 int haveenv = 0;
159 int havesearch = 0;
160#ifdef RESOLVSORT
161 int nsort = 0;
162 char *net;
163#endif
164#ifndef RFC1535
165 int dots;
166#endif
167#ifdef _LIBC
168 statp->_u._ext.initstamp = __res_initstamp;
169#endif
170
171 if (!preinit) {
172 statp->retrans = RES_TIMEOUT;
173 statp->retry = RES_DFLRETRY;
174 statp->options = RES_DEFAULT;
175 statp->id = res_randomid();
176 }
177
178 statp->nscount = 0;
179 statp->defdname[0] = '\0';
180 statp->ndots = 1;
181 statp->pfcode = 0;
182 statp->_vcsock = -1;
183 statp->_flags = 0;
184 statp->qhook = NULL;
185 statp->rhook = NULL;
186 statp->_u._ext.nscount = 0;
187 for (n = 0; n < MAXNS; n++)
188 statp->_u._ext.nsaddrs[n] = NULL;
189
190 /* Allow user to override the local domain definition */
191 if ((cp = getenv("LOCALDOMAIN")) != NULL) {
192 (void)strncpy(statp->defdname, cp, sizeof(statp->defdname) - 1);
193 statp->defdname[sizeof(statp->defdname) - 1] = '\0';
194 haveenv++;
195
196 /*
197 * Set search list to be blank-separated strings
198 * from rest of env value. Permits users of LOCALDOMAIN
199 * to still have a search list, and anyone to set the
200 * one that they want to use as an individual (even more
201 * important now that the rfc1535 stuff restricts searches)
202 */
203 cp = statp->defdname;
204 pp = statp->dnsrch;
205 *pp++ = cp;
206 for (n = 0; *cp && pp < statp->dnsrch + MAXDNSRCH; cp++) {
207 if (*cp == '\n') /* silly backwards compat */
208 break;
209 else if (*cp == ' ' || *cp == '\t') {
210 *cp = 0;
211 n = 1;
212 } else if (n) {
213 *pp++ = cp;
214 n = 0;
215 havesearch = 1;
216 }
217 }
218 /* null terminate last domain if there are excess */
219 while (*cp != '\0' && *cp != ' ' && *cp != '\t' && *cp != '\n')
220 cp++;
221 *cp = '\0';
222 *pp++ = 0;
223 }
224
225#define MATCH(line, name) \
226 (!strncmp(line, name, sizeof(name) - 1) && \
227 (line[sizeof(name) - 1] == ' ' || \
228 line[sizeof(name) - 1] == '\t'))
229
230 if ((fp = fopen(_PATH_RESCONF, "rce")) != NULL) {
231 /* No threads use this stream. */
232 __fsetlocking (fp, FSETLOCKING_BYCALLER);
233 /* read the config file */
234 while (__fgets_unlocked(buf, sizeof(buf), fp) != NULL) {
235 /* skip comments */
236 if (*buf == ';' || *buf == '#')
237 continue;
238 /* read default domain name */
239 if (MATCH(buf, "domain")) {
240 if (haveenv) /* skip if have from environ */
241 continue;
242 cp = buf + sizeof("domain") - 1;
243 while (*cp == ' ' || *cp == '\t')
244 cp++;
245 if ((*cp == '\0') || (*cp == '\n'))
246 continue;
247 strncpy(statp->defdname, cp, sizeof(statp->defdname) - 1);
248 statp->defdname[sizeof(statp->defdname) - 1] = '\0';
249 if ((cp = strpbrk(statp->defdname, " \t\n")) != NULL)
250 *cp = '\0';
251 havesearch = 0;
252 continue;
253 }
254 /* set search list */
255 if (MATCH(buf, "search")) {
256 if (haveenv) /* skip if have from environ */
257 continue;
258 cp = buf + sizeof("search") - 1;
259 while (*cp == ' ' || *cp == '\t')
260 cp++;
261 if ((*cp == '\0') || (*cp == '\n'))
262 continue;
263 strncpy(statp->defdname, cp, sizeof(statp->defdname) - 1);
264 statp->defdname[sizeof(statp->defdname) - 1] = '\0';
265 if ((cp = strchr(statp->defdname, '\n')) != NULL)
266 *cp = '\0';
267 /*
268 * Set search list to be blank-separated strings
269 * on rest of line.
270 */
271 cp = statp->defdname;
272 pp = statp->dnsrch;
273 *pp++ = cp;
274 for (n = 0; *cp && pp < statp->dnsrch + MAXDNSRCH; cp++) {
275 if (*cp == ' ' || *cp == '\t') {
276 *cp = 0;
277 n = 1;
278 } else if (n) {
279 *pp++ = cp;
280 n = 0;
281 }
282 }
283 /* null terminate last domain if there are excess */
284 while (*cp != '\0' && *cp != ' ' && *cp != '\t')
285 cp++;
286 *cp = '\0';
287 *pp++ = 0;
288 havesearch = 1;
289 continue;
290 }
291 /* read nameservers to query */
292 if (MATCH(buf, "nameserver") && nserv < MAXNS) {
293 struct in_addr a;
294
295 cp = buf + sizeof("nameserver") - 1;
296 while (*cp == ' ' || *cp == '\t')
297 cp++;
298 if ((*cp != '\0') && (*cp != '\n')
299 && __inet_aton(cp, &a)) {
300 statp->nsaddr_list[nserv].sin_addr = a;
301 statp->nsaddr_list[nserv].sin_family = AF_INET;
302 statp->nsaddr_list[nserv].sin_port =
303 htons(NAMESERVER_PORT);
304 nserv++;
305#ifdef _LIBC
306 } else {
307 struct in6_addr a6;
308 char *el;
309
310 if ((el = strpbrk(cp, " \t\n")) != NULL)
311 *el = '\0';
312 if ((el = strchr(cp, SCOPE_DELIMITER)) != NULL)
313 *el = '\0';
314 if ((*cp != '\0') &&
315 (__inet_pton(AF_INET6, cp, &a6) > 0)) {
316 struct sockaddr_in6 *sa6;
317
318 sa6 = malloc(sizeof(*sa6));
319 if (sa6 != NULL) {
320 sa6->sin6_family = AF_INET6;
321 sa6->sin6_port = htons(NAMESERVER_PORT);
322 sa6->sin6_flowinfo = 0;
323 sa6->sin6_addr = a6;
324
325 if (__glibc_likely (el == NULL))
326 sa6->sin6_scope_id = 0;
327 else {
328 int try_numericscope = 1;
329 if (IN6_IS_ADDR_LINKLOCAL (&a6)
330 || IN6_IS_ADDR_MC_LINKLOCAL (&a6)) {
331 sa6->sin6_scope_id
332 = __if_nametoindex (el + 1);
333 if (sa6->sin6_scope_id != 0)
334 try_numericscope = 0;
335 }
336
337 if (try_numericscope) {
338 char *end;
339 sa6->sin6_scope_id
340 = (uint32_t) strtoul (el + 1, &end,
341 10);
342 if (*end != '\0')
343 sa6->sin6_scope_id = 0;
344 }
345 }
346
347 statp->nsaddr_list[nserv].sin_family = 0;
348 statp->_u._ext.nsaddrs[nserv] = sa6;
349 statp->_u._ext.nssocks[nserv] = -1;
350 have_serv6 = 1;
351 nserv++;
352 }
353 }
354#endif
355 }
356 continue;
357 }
358#ifdef RESOLVSORT
359 if (MATCH(buf, "sortlist")) {
360 struct in_addr a;
361
362 cp = buf + sizeof("sortlist") - 1;
363 while (nsort < MAXRESOLVSORT) {
364 while (*cp == ' ' || *cp == '\t')
365 cp++;
366 if (*cp == '\0' || *cp == '\n' || *cp == ';')
367 break;
368 net = cp;
369 while (*cp && !ISSORTMASK(*cp) && *cp != ';' &&
370 isascii(*cp) && !isspace(*cp))
371 cp++;
372 n = *cp;
373 *cp = 0;
374 if (__inet_aton(net, &a)) {
375 statp->sort_list[nsort].addr = a;
376 if (ISSORTMASK(n)) {
377 *cp++ = n;
378 net = cp;
379 while (*cp && *cp != ';' &&
380 isascii(*cp) && !isspace(*cp))
381 cp++;
382 n = *cp;
383 *cp = 0;
384 if (__inet_aton(net, &a)) {
385 statp->sort_list[nsort].mask = a.s_addr;
386 } else {
387 statp->sort_list[nsort].mask =
388 net_mask(statp->sort_list[nsort].addr);
389 }
390 } else {
391 statp->sort_list[nsort].mask =
392 net_mask(statp->sort_list[nsort].addr);
393 }
394 nsort++;
395 }
396 *cp = n;
397 }
398 continue;
399 }
400#endif
401 if (MATCH(buf, "options")) {
402 res_setoptions(statp, buf + sizeof("options") - 1, "conf");
403 continue;
404 }
405 }
406 statp->nscount = nserv;
407#ifdef _LIBC
408 if (have_serv6) {
409 /* We try IPv6 servers again. */
410 statp->ipv6_unavail = false;
411 }
412#endif
413#ifdef RESOLVSORT
414 statp->nsort = nsort;
415#endif
416 (void) fclose(fp);
417 }
418 if (__builtin_expect(statp->nscount == 0, 0)) {
419 statp->nsaddr.sin_addr = __inet_makeaddr(IN_LOOPBACKNET, 1);
420 statp->nsaddr.sin_family = AF_INET;
421 statp->nsaddr.sin_port = htons(NAMESERVER_PORT);
422 statp->nscount = 1;
423 }
424 if (statp->defdname[0] == 0 &&
425 __gethostname(buf, sizeof(statp->defdname) - 1) == 0 &&
426 (cp = strchr(buf, '.')) != NULL)
427 strcpy(statp->defdname, cp + 1);
428
429 /* find components of local domain that might be searched */
430 if (havesearch == 0) {
431 pp = statp->dnsrch;
432 *pp++ = statp->defdname;
433 *pp = NULL;
434
435#ifndef RFC1535
436 dots = 0;
437 for (cp = statp->defdname; *cp; cp++)
438 dots += (*cp == '.');
439
440 cp = statp->defdname;
441 while (pp < statp->dnsrch + MAXDFLSRCH) {
442 if (dots < LOCALDOMAINPARTS)
443 break;
444 cp = __rawmemchr(cp, '.') + 1; /* we know there is one */
445 *pp++ = cp;
446 dots--;
447 }
448 *pp = NULL;
449#ifdef DEBUG
450 if (statp->options & RES_DEBUG) {
451 printf(";; res_init()... default dnsrch list:\n");
452 for (pp = statp->dnsrch; *pp; pp++)
453 printf(";;\t%s\n", *pp);
454 printf(";;\t..END..\n");
455 }
456#endif
457#endif /* !RFC1535 */
458 }
459
460 if ((cp = getenv("RES_OPTIONS")) != NULL)
461 res_setoptions(statp, cp, "env");
462 statp->options |= RES_INIT;
463 return (0);
464}
465
466static void
467internal_function
468res_setoptions(res_state statp, const char *options, const char *source) {
469 const char *cp = options;
470 int i;
471
472#ifdef DEBUG
473 if (statp->options & RES_DEBUG)
474 printf(";; res_setoptions(\"%s\", \"%s\")...\n",
475 options, source);
476#endif
477 while (*cp) {
478 /* skip leading and inner runs of spaces */
479 while (*cp == ' ' || *cp == '\t')
480 cp++;
481 /* search for and process individual options */
482 if (!strncmp(cp, "ndots:", sizeof("ndots:") - 1)) {
483 i = atoi(cp + sizeof("ndots:") - 1);
484 if (i <= RES_MAXNDOTS)
485 statp->ndots = i;
486 else
487 statp->ndots = RES_MAXNDOTS;
488#ifdef DEBUG
489 if (statp->options & RES_DEBUG)
490 printf(";;\tndots=%d\n", statp->ndots);
491#endif
492 } else if (!strncmp(cp, "timeout:", sizeof("timeout:") - 1)) {
493 i = atoi(cp + sizeof("timeout:") - 1);
494 if (i <= RES_MAXRETRANS)
495 statp->retrans = i;
496 else
497 statp->retrans = RES_MAXRETRANS;
498 } else if (!strncmp(cp, "attempts:", sizeof("attempts:") - 1)){
499 i = atoi(cp + sizeof("attempts:") - 1);
500 if (i <= RES_MAXRETRY)
501 statp->retry = i;
502 else
503 statp->retry = RES_MAXRETRY;
504 } else if (!strncmp(cp, "debug", sizeof("debug") - 1)) {
505#ifdef DEBUG
506 if (!(statp->options & RES_DEBUG)) {
507 printf(";; res_setoptions(\"%s\", \"%s\")..\n",
508 options, source);
509 statp->options |= RES_DEBUG;
510 }
511 printf(";;\tdebug\n");
512#endif
513 } else {
514 static const struct
515 {
516 char str[22];
517 uint8_t len;
518 uint8_t clear;
519 unsigned long int flag;
520 } options[] = {
521#define STRnLEN(str) str, sizeof (str) - 1
522 { STRnLEN ("inet6"), 0, RES_USE_INET6 },
523 { STRnLEN ("ip6-bytestring"), 0, RES_USEBSTRING },
524 { STRnLEN ("no-ip6-dotint"), 0, RES_NOIP6DOTINT },
525 { STRnLEN ("ip6-dotint"), 1, ~RES_NOIP6DOTINT },
526 { STRnLEN ("rotate"), 0, RES_ROTATE },
527 { STRnLEN ("no-check-names"), 0, RES_NOCHECKNAME },
528 { STRnLEN ("edns0"), 0, RES_USE_EDNS0 },
529 { STRnLEN ("single-request-reopen"), 0, RES_SNGLKUPREOP },
530 { STRnLEN ("single-request"), 0, RES_SNGLKUP },
531 { STRnLEN ("no_tld_query"), 0, RES_NOTLDQUERY },
532 { STRnLEN ("no-tld-query"), 0, RES_NOTLDQUERY },
533 { STRnLEN ("use-vc"), 0, RES_USEVC }
534 };
535#define noptions (sizeof (options) / sizeof (options[0]))
536 int i;
537 for (i = 0; i < noptions; ++i)
538 if (strncmp (cp, options[i].str, options[i].len) == 0)
539 {
540 if (options[i].clear)
541 statp->options &= options[i].flag;
542 else
543 statp->options |= options[i].flag;
544 break;
545 }
546 if (i == noptions) {
547 /* XXX - print a warning here? */
548 }
549 }
550 /* skip to next run of spaces */
551 while (*cp && *cp != ' ' && *cp != '\t')
552 cp++;
553 }
554}
555
556#ifdef RESOLVSORT
557/* XXX - should really support CIDR which means explicit masks always. */
558/* XXX - should really use system's version of this */
559static u_int32_t
560net_mask (struct in_addr in)
561{
562 u_int32_t i = ntohl(in.s_addr);
563
564 if (IN_CLASSA(i))
565 return (htonl(IN_CLASSA_NET));
566 else if (IN_CLASSB(i))
567 return (htonl(IN_CLASSB_NET));
568 return (htonl(IN_CLASSC_NET));
569}
570#endif
571
572u_int
573res_randomid(void) {
574 return 0xffff & __getpid();
575}
576#ifdef _LIBC
577libc_hidden_def (__res_randomid)
578#endif
579
580
581/*
582 * This routine is for closing the socket if a virtual circuit is used and
583 * the program wants to close it. This provides support for endhostent()
584 * which expects to close the socket.
585 *
586 * This routine is not expected to be user visible.
587 */
588void
589__res_iclose(res_state statp, bool free_addr) {
590 int ns;
591
592 if (statp->_vcsock >= 0) {
593 close_not_cancel_no_status(statp->_vcsock);
594 statp->_vcsock = -1;
595 statp->_flags &= ~(RES_F_VC | RES_F_CONN);
596 }
597 for (ns = 0; ns < statp->_u._ext.nscount; ns++)
598 if (statp->_u._ext.nsaddrs[ns]) {
599 if (statp->_u._ext.nssocks[ns] != -1) {
600 close_not_cancel_no_status(statp->_u._ext.nssocks[ns]);
601 statp->_u._ext.nssocks[ns] = -1;
602 }
603 if (free_addr) {
604 free (statp->_u._ext.nsaddrs[ns]);
605 statp->_u._ext.nsaddrs[ns] = NULL;
606 }
607 }
608}
609libc_hidden_def (__res_iclose)
610
611void
612res_nclose(res_state statp)
613{
614 __res_iclose (statp, true);
615}
616#ifdef _LIBC
617libc_hidden_def (__res_nclose)
618#endif
619
620#ifdef _LIBC
621# ifdef _LIBC_REENTRANT
622/* This is called when a thread is exiting to free resources held in _res. */
623static void __attribute__ ((section ("__libc_thread_freeres_fn")))
624res_thread_freeres (void)
625{
626 if (_res.nscount == 0)
627 /* Never called res_ninit. */
628 return;
629
630 __res_iclose (&_res, true); /* Close any VC sockets. */
631
632 /* Make sure we do a full re-initialization the next time. */
633 _res.options = 0;
634}
635text_set_element (__libc_thread_subfreeres, res_thread_freeres);
636text_set_element (__libc_subfreeres, res_thread_freeres);
637# endif
638#endif
639