diff options
Diffstat (limited to 'lib/libc/net/res_init.c')
| -rw-r--r-- | lib/libc/net/res_init.c | 715 |
1 files changed, 0 insertions, 715 deletions
diff --git a/lib/libc/net/res_init.c b/lib/libc/net/res_init.c deleted file mode 100644 index ecbb5d5..0000000 --- a/lib/libc/net/res_init.c +++ /dev/null @@ -1,715 +0,0 @@ -/* - * Copyright (c) 1985, 1989, 1993 - * The Regents of the University of California. All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * 3. All advertising materials mentioning features or use of this software - * must display the following acknowledgement: - * This product includes software developed by the University of - * California, Berkeley and its contributors. - * 4. Neither the name of the University nor the names of its contributors - * may be used to endorse or promote products derived from this software - * without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND - * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE - * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL - * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS - * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) - * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT - * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY - * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF - * SUCH DAMAGE. - */ - -/* - * Portions Copyright (c) 1993 by Digital Equipment Corporation. - * - * Permission to use, copy, modify, and distribute this software for any - * purpose with or without fee is hereby granted, provided that the above - * copyright notice and this permission notice appear in all copies, and that - * the name of Digital Equipment Corporation not be used in advertising or - * publicity pertaining to distribution of the document or software without - * specific, written prior permission. - * - * THE SOFTWARE IS PROVIDED "AS IS" AND DIGITAL EQUIPMENT CORP. DISCLAIMS ALL - * WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES - * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL DIGITAL EQUIPMENT - * CORPORATION BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL - * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR - * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS - * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS - * SOFTWARE. - */ - -/* - * Portions Copyright (c) 1996 by Internet Software Consortium. - * - * Permission to use, copy, modify, and distribute this software for any - * purpose with or without fee is hereby granted, provided that the above - * copyright notice and this permission notice appear in all copies. - * - * THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM DISCLAIMS - * ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES - * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL INTERNET SOFTWARE - * CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL - * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR - * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS - * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS - * SOFTWARE. - */ - -#if defined(LIBC_SCCS) && !defined(lint) -static char sccsid[] = "@(#)res_init.c 8.1 (Berkeley) 6/7/93"; -static char orig_rcsid[] = "From: Id: res_init.c,v 8.7 1996/11/18 09:10:04 vixie Exp $"; -#endif /* LIBC_SCCS and not lint */ -#include <sys/cdefs.h> -__FBSDID("$FreeBSD$"); - -#include <sys/types.h> -#include <sys/param.h> -#include <sys/socket.h> -#include <sys/time.h> -#include <netinet/in.h> -#include <arpa/inet.h> -#include <arpa/nameser.h> -#include <ctype.h> -#include <limits.h> -#include <resolv.h> -#include <stdio.h> -#include <stdlib.h> -#include <string.h> -#include <unistd.h> -#include <netdb.h> - -#include "namespace.h" -#include "reentrant.h" -#include "un-namespace.h" -#include "res_config.h" -#include "res_send_private.h" - -#undef h_errno -extern int h_errno; - -static void res_setoptions(char *, char *); - -#ifdef RESOLVSORT -static const char sort_mask[] = "/&"; -#define ISSORTMASK(ch) (strchr(sort_mask, ch) != NULL) -static u_int32_t net_mask(struct in_addr); -#endif - -#if !defined(isascii) /* XXX - could be a function */ -# define isascii(c) (!(c & 0200)) -#endif - -/* - * Check structure for failed per-thread allocations. - */ -static struct res_per_thread { - struct __res_state res_state; - struct __res_state_ext res_state_ext; - struct __res_send_private res_send_private; - int h_errno; -} _res_per_thread_bogus = { .res_send_private = { .s = -1 } }; /* socket */ - -/* - * Set up default settings. If the configuration file exist, the values - * there will have precedence. Otherwise, the server address is set to - * INADDR_ANY and the default domain name comes from the gethostname(). - * - * An interrim version of this code (BIND 4.9, pre-4.4BSD) used 127.0.0.1 - * rather than INADDR_ANY ("0.0.0.0") as the default name server address - * since it was noted that INADDR_ANY actually meant ``the first interface - * you "ifconfig"'d at boot time'' and if this was a SLIP or PPP interface, - * it had to be "up" in order for you to reach your own name server. It - * was later decided that since the recommended practice is to always - * install local static routes through 127.0.0.1 for all your network - * interfaces, that we could solve this problem without a code change. - * - * The configuration file should always be used, since it is the only way - * to specify a default domain. If you are running a server on your local - * machine, you should say "nameserver 0.0.0.0" or "nameserver 127.0.0.1" - * in the configuration file. - * - * Return 0 if completes successfully, -1 on error - */ -int -res_init() -{ - FILE *fp; - struct __res_send_private *rsp; - char *cp, **pp; - int n; - char buf[MAXDNAME]; - int nserv = 0; /* number of nameserver records read from file */ - int haveenv = 0; - int havesearch = 0; -#ifdef RESOLVSORT - int nsort = 0; - char *net; -#endif -#ifndef RFC1535 - int dots; -#endif - - /* - * If allocation of memory for this thread's resolver has failed, - * return the error to the user. - */ - if (&_res == &_res_per_thread_bogus.res_state) - return (-1); - rsp = ___res_send_private(); - rsp->s = -1; - rsp->connected = 0; - rsp->vc = 0; - rsp->af = 0; - rsp->Qhook = NULL; - rsp->Rhook = NULL; - /* - * These three fields used to be statically initialized. This made - * it hard to use this code in a shared library. It is necessary, - * now that we're doing dynamic initialization here, that we preserve - * the old semantics: if an application modifies one of these three - * fields of _res before res_init() is called, res_init() will not - * alter them. Of course, if an application is setting them to - * _zero_ before calling res_init(), hoping to override what used - * to be the static default, we can't detect it and unexpected results - * will follow. Zero for any of these fields would make no sense, - * so one can safely assume that the applications were already getting - * unexpected results. - * - * _res.options is tricky since some apps were known to diddle the bits - * before res_init() was first called. We can't replicate that semantic - * with dynamic initialization (they may have turned bits off that are - * set in RES_DEFAULT). Our solution is to declare such applications - * "broken". They could fool us by setting RES_INIT but none do (yet). - */ - if (!_res.retrans) - _res.retrans = RES_TIMEOUT; - if (!_res.retry) - _res.retry = RES_DFLRETRY; - if (!(_res.options & RES_INIT)) - _res.options = RES_DEFAULT; - - /* - * This one used to initialize implicitly to zero, so unless the app - * has set it to something in particular, we can randomize it now. - */ - if (!_res.id) - _res.id = res_randomid(); - -#ifdef USELOOPBACK - _res.nsaddr.sin_addr = inet_makeaddr(IN_LOOPBACKNET, 1); -#else - _res.nsaddr.sin_addr.s_addr = INADDR_ANY; -#endif - _res.nsaddr.sin_family = AF_INET; - _res.nsaddr.sin_port = htons(NAMESERVER_PORT); - _res.nsaddr.sin_len = sizeof(struct sockaddr_in); - if (sizeof(_res_ext.nsaddr) >= _res.nsaddr.sin_len) - memcpy(&_res_ext.nsaddr, &_res.nsaddr, _res.nsaddr.sin_len); - _res.nscount = 1; - _res.ndots = 1; - _res.pfcode = 0; - - /* Allow user to override the local domain definition */ - if (issetugid() == 0 && (cp = getenv("LOCALDOMAIN")) != NULL) { - (void)strncpy(_res.defdname, cp, sizeof(_res.defdname) - 1); - _res.defdname[sizeof(_res.defdname) - 1] = '\0'; - haveenv++; - - /* - * Set search list to be blank-separated strings - * from rest of env value. Permits users of LOCALDOMAIN - * to still have a search list, and anyone to set the - * one that they want to use as an individual (even more - * important now that the rfc1535 stuff restricts searches) - */ - cp = _res.defdname; - pp = _res.dnsrch; - *pp++ = cp; - for (n = 0; *cp && pp < _res.dnsrch + MAXDNSRCH; cp++) { - if (*cp == '\n') /* silly backwards compat */ - break; - else if (*cp == ' ' || *cp == '\t') { - *cp = 0; - n = 1; - } else if (n) { - *pp++ = cp; - n = 0; - havesearch = 1; - } - } - /* null terminate last domain if there are excess */ - while (*cp != '\0' && *cp != ' ' && *cp != '\t' && *cp != '\n') - cp++; - *cp = '\0'; - *pp++ = 0; - } - -#define MATCH(line, name) \ - (!strncmp(line, name, sizeof(name) - 1) && \ - (line[sizeof(name) - 1] == ' ' || \ - line[sizeof(name) - 1] == '\t')) - - if ((fp = fopen(_PATH_RESCONF, "r")) != NULL) { - /* read the config file */ - while (fgets(buf, sizeof(buf), fp) != NULL) { - /* skip comments */ - if (*buf == ';' || *buf == '#') - continue; - /* read default domain name */ - if (MATCH(buf, "domain")) { - if (haveenv) /* skip if have from environ */ - continue; - cp = buf + sizeof("domain") - 1; - while (*cp == ' ' || *cp == '\t') - cp++; - if ((*cp == '\0') || (*cp == '\n')) - continue; - strncpy(_res.defdname, cp, sizeof(_res.defdname) - 1); - _res.defdname[sizeof(_res.defdname) - 1] = '\0'; - if ((cp = strpbrk(_res.defdname, " \t\n")) != NULL) - *cp = '\0'; - havesearch = 0; - continue; - } - /* set search list */ - if (MATCH(buf, "search")) { - if (haveenv) /* skip if have from environ */ - continue; - cp = buf + sizeof("search") - 1; - while (*cp == ' ' || *cp == '\t') - cp++; - if ((*cp == '\0') || (*cp == '\n')) - continue; - strncpy(_res.defdname, cp, sizeof(_res.defdname) - 1); - _res.defdname[sizeof(_res.defdname) - 1] = '\0'; - if ((cp = strchr(_res.defdname, '\n')) != NULL) - *cp = '\0'; - /* - * Set search list to be blank-separated strings - * on rest of line. - */ - cp = _res.defdname; - pp = _res.dnsrch; - *pp++ = cp; - for (n = 0; *cp && pp < _res.dnsrch + MAXDNSRCH; cp++) { - if (*cp == ' ' || *cp == '\t') { - *cp = 0; - n = 1; - } else if (n) { - *pp++ = cp; - n = 0; - } - } - /* null terminate last domain if there are excess */ - while (*cp != '\0' && *cp != ' ' && *cp != '\t') - cp++; - *cp = '\0'; - *pp++ = 0; - havesearch = 1; - continue; - } - /* read nameservers to query */ - if (MATCH(buf, "nameserver") && nserv < MAXNS) { - char *q; - struct addrinfo hints, *res; - char pbuf[NI_MAXSERV]; - - cp = buf + sizeof("nameserver") - 1; - while (*cp == ' ' || *cp == '\t') - cp++; - if ((*cp == '\0') || (*cp == '\n')) - continue; - for (q = cp; *q; q++) { - if (isspace(*q)) { - *q = '\0'; - break; - } - } - memset(&hints, 0, sizeof(hints)); - hints.ai_flags = AI_NUMERICHOST; - hints.ai_socktype = SOCK_DGRAM; - snprintf(pbuf, sizeof(pbuf), "%d", NAMESERVER_PORT); - if (getaddrinfo(cp, pbuf, &hints, &res) == 0 && - res->ai_next == NULL) { - if (res->ai_addrlen <= sizeof(_res_ext.nsaddr_list[nserv])) { - memcpy(&_res_ext.nsaddr_list[nserv], res->ai_addr, - res->ai_addrlen); - } else { - memset(&_res_ext.nsaddr_list[nserv], 0, - sizeof(_res_ext.nsaddr_list[nserv])); - } - if (res->ai_addrlen <= sizeof(_res.nsaddr_list[nserv])) { - memcpy(&_res.nsaddr_list[nserv], res->ai_addr, - res->ai_addrlen); - } else { - memset(&_res.nsaddr_list[nserv], 0, - sizeof(_res.nsaddr_list[nserv])); - } - nserv++; - } - if (res) - freeaddrinfo(res); - continue; - } -#ifdef RESOLVSORT - if (MATCH(buf, "sortlist")) { - struct in_addr a; - struct in6_addr a6; - int m, i; - u_char *u; - - cp = buf + sizeof("sortlist") - 1; - while (nsort < MAXRESOLVSORT) { - while (*cp == ' ' || *cp == '\t') - cp++; - if (*cp == '\0' || *cp == '\n' || *cp == ';') - break; - net = cp; - while (*cp && !ISSORTMASK(*cp) && *cp != ';' && - isascii(*cp) && !isspace(*cp)) - cp++; - n = *cp; - *cp = 0; - if (inet_aton(net, &a)) { - _res.sort_list[nsort].addr = a; - if (ISSORTMASK(n)) { - *cp++ = n; - net = cp; - while (*cp && *cp != ';' && - isascii(*cp) && !isspace(*cp)) - cp++; - n = *cp; - *cp = 0; - if (inet_aton(net, &a)) { - _res.sort_list[nsort].mask = a.s_addr; - } else { - _res.sort_list[nsort].mask = - net_mask(_res.sort_list[nsort].addr); - } - } else { - _res.sort_list[nsort].mask = - net_mask(_res.sort_list[nsort].addr); - } - _res_ext.sort_list[nsort].af = AF_INET; - _res_ext.sort_list[nsort].addr.ina = - _res.sort_list[nsort].addr; - _res_ext.sort_list[nsort].mask.ina.s_addr = - _res.sort_list[nsort].mask; - nsort++; - } - else if (inet_pton(AF_INET6, net, &a6) == 1) { - - _res_ext.sort_list[nsort].af = AF_INET6; - _res_ext.sort_list[nsort].addr.in6a = a6; - u = (u_char *)&_res_ext.sort_list[nsort].mask.in6a; - *cp++ = n; - net = cp; - while (*cp && *cp != ';' && - isascii(*cp) && !isspace(*cp)) - cp++; - m = n; - n = *cp; - *cp = 0; - switch (m) { - case '/': - m = atoi(net); - break; - case '&': - if (inet_pton(AF_INET6, net, u) == 1) { - m = -1; - break; - } - /*FALLTHROUGH*/ - default: - m = sizeof(struct in6_addr) * CHAR_BIT; - break; - } - if (m >= 0) { - for (i = 0; i < sizeof(struct in6_addr); i++) { - if (m <= 0) { - *u = 0; - } else { - m -= CHAR_BIT; - *u = (u_char)~0; - if (m < 0) - *u <<= -m; - } - u++; - } - } - _res.sort_list[nsort].addr.s_addr = - (u_int32_t)0xffffffff; - _res.sort_list[nsort].mask = (u_int32_t)0xffffffff; - nsort++; - } - *cp = n; - } - continue; - } -#endif - if (MATCH(buf, "options")) { - res_setoptions(buf + sizeof("options") - 1, "conf"); - continue; - } - } - if (nserv > 1) - _res.nscount = nserv; -#ifdef RESOLVSORT - _res.nsort = nsort; -#endif - (void) fclose(fp); - } - if (_res.defdname[0] == 0 && - gethostname(buf, sizeof(_res.defdname) - 1) == 0 && - (cp = strchr(buf, '.')) != NULL) - strcpy(_res.defdname, cp + 1); - - /* find components of local domain that might be searched */ - if (havesearch == 0) { - pp = _res.dnsrch; - *pp++ = _res.defdname; - *pp = NULL; - -#ifndef RFC1535 - dots = 0; - for (cp = _res.defdname; *cp; cp++) - dots += (*cp == '.'); - - cp = _res.defdname; - while (pp < _res.dnsrch + MAXDFLSRCH) { - if (dots < LOCALDOMAINPARTS) - break; - cp = strchr(cp, '.') + 1; /* we know there is one */ - *pp++ = cp; - dots--; - } - *pp = NULL; -#ifdef DEBUG - if (_res.options & RES_DEBUG) { - printf(";; res_init()... default dnsrch list:\n"); - for (pp = _res.dnsrch; *pp; pp++) - printf(";;\t%s\n", *pp); - printf(";;\t..END..\n"); - } -#endif -#endif /* !RFC1535 */ - } - - if (issetugid()) - _res.options |= RES_NOALIASES; - else if ((cp = getenv("RES_OPTIONS")) != NULL) - res_setoptions(cp, "env"); - _res.options |= RES_INIT; - return (0); -} - -static void -res_setoptions(options, source) - char *options, *source; -{ - char *cp = options; - int i; - -#ifdef DEBUG - if (_res.options & RES_DEBUG) - printf(";; res_setoptions(\"%s\", \"%s\")...\n", - options, source); -#endif - while (*cp) { - /* skip leading and inner runs of spaces */ - while (*cp == ' ' || *cp == '\t') - cp++; - /* search for and process individual options */ - if (!strncmp(cp, "ndots:", sizeof("ndots:") - 1)) { - i = atoi(cp + sizeof("ndots:") - 1); - if (i <= RES_MAXNDOTS) - _res.ndots = i; - else - _res.ndots = RES_MAXNDOTS; -#ifdef DEBUG - if (_res.options & RES_DEBUG) - printf(";;\tndots=%d\n", _res.ndots); -#endif - } else if (!strncmp(cp, "timeout:", sizeof("timeout:") - 1)) { - i = atoi(cp + sizeof("timeout:") - 1); - if (i <= RES_MAXRETRANS) - _res.retrans = i; - else - _res.retrans = RES_MAXRETRANS; -#ifdef DEBUG - if (_res.options & RES_DEBUG) - printf(";;\ttimeout=%d\n", _res.retrans); -#endif - } else if (!strncmp(cp, "attempts:", sizeof("attempts:") - 1)){ - i = atoi(cp + sizeof("attempts:") - 1); - if (i <= RES_MAXRETRY) - _res.retry = i; - else - _res.retry = RES_MAXRETRY; -#ifdef DEBUG - if (_res.options & RES_DEBUG) - printf(";;\tretry=%d\n", _res.retry); -#endif - } else if (!strncmp(cp, "debug", sizeof("debug") - 1)) { -#ifdef DEBUG - if (!(_res.options & RES_DEBUG)) { - printf(";; res_setoptions(\"%s\", \"%s\")..\n", - options, source); - _res.options |= RES_DEBUG; - } - printf(";;\tdebug\n"); -#endif - } else if (!strncmp(cp, "inet6", sizeof("inet6") - 1)) { - _res.options |= RES_USE_INET6; - } else if (!strncmp(cp, "insecure1", sizeof("insecure1") - 1)) { - _res.options |= RES_INSECURE1; - } else if (!strncmp(cp, "insecure2", sizeof("insecure2") - 1)) { - _res.options |= RES_INSECURE2; - } else if (!strncmp(cp, "no_tld_query", sizeof("no_tld_query") - 1)) { - _res.options |= RES_NOTLDQUERY; - } else if (!strncmp(cp, "edns0", sizeof("edns0") - 1)) { - _res.options |= RES_USE_EDNS0; - } else { - /* XXX - print a warning here? */ - } - /* skip to next run of spaces */ - while (*cp && *cp != ' ' && *cp != '\t') - cp++; - } -} - -#ifdef RESOLVSORT -/* XXX - should really support CIDR which means explicit masks always. */ -static u_int32_t -net_mask(in) /* XXX - should really use system's version of this */ - struct in_addr in; -{ - u_int32_t i = ntohl(in.s_addr); - - if (IN_CLASSA(i)) - return (htonl(IN_CLASSA_NET)); - else if (IN_CLASSB(i)) - return (htonl(IN_CLASSB_NET)); - return (htonl(IN_CLASSC_NET)); -} -#endif - -u_int -res_randomid() -{ - struct timeval now; - - gettimeofday(&now, NULL); - return (0xffff & (now.tv_sec ^ now.tv_usec ^ getpid())); -} - -/* - * Resolver state default settings. - */ - -#undef _res -#undef _res_ext -#ifdef __BIND_RES_TEXT -struct __res_state _res = { RES_TIMEOUT }; /* Motorola, et al. */ -#else -struct __res_state _res; -#endif -struct __res_state_ext _res_ext; -static struct __res_send_private _res_send_private = { .s = -1 }; /* socket */ - -static thread_key_t res_key; -static once_t res_init_once = ONCE_INITIALIZER; -static int res_thr_keycreated = 0; - -static void -free_res(void *ptr) -{ - struct res_per_thread *myrsp = ptr; - - if (myrsp->res_state.options & RES_INIT) - res_close(); - free(myrsp); -} - -static void -res_keycreate(void) -{ - res_thr_keycreated = thr_keycreate(&res_key, free_res) == 0; -} - -static struct res_per_thread * -allocate_res(void) -{ - struct res_per_thread *myrsp; - - if (thr_once(&res_init_once, res_keycreate) != 0 || - !res_thr_keycreated) - return (&_res_per_thread_bogus); - - myrsp = thr_getspecific(res_key); - if (myrsp != NULL) - return (myrsp); - myrsp = calloc(1, sizeof(*myrsp)); - if (myrsp == NULL) - return (&_res_per_thread_bogus); -#ifdef __BIND_RES_TEXT - myrsp->res_state.options = RES_TIMEOUT; /* Motorola, et al. */ -#endif - myrsp->res_send_private.s = -1; /* socket */ - if (thr_setspecific(res_key, myrsp) == 0) - return (myrsp); - free(myrsp); - return (&_res_per_thread_bogus); -} - -struct __res_state * -___res(void) -{ - if (thr_main() != 0) - return (&_res); - return (&allocate_res()->res_state); -} - -struct __res_state_ext * -___res_ext(void) -{ - if (thr_main() != 0) - return (&_res_ext); - return (&allocate_res()->res_state_ext); -} - -struct __res_send_private * -___res_send_private(void) -{ - if (thr_main() != 0) - return (&_res_send_private); - return (&allocate_res()->res_send_private); -} - -int * -__h_error(void) -{ - if (thr_main() != 0) - return (&h_errno); - return (&allocate_res()->h_errno); -} - -/* - * Weak aliases for applications that use certain private entry points, - * and fail to include <resolv.h>. - */ -#undef res_init -__weak_reference(__res_init, res_init); |
