1 /* $NetBSD: sethostent.c,v 1.17 2012/03/20 17:44:18 matt Exp $ */ 2 3 /* 4 * Copyright (c) 1985, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. Neither the name of the University nor the names of its contributors 16 * may be used to endorse or promote products derived from this software 17 * without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 */ 31 32 #include <sys/cdefs.h> 33 #if defined(LIBC_SCCS) && !defined(lint) 34 #if 0 35 static char sccsid[] = "@(#)sethostent.c 8.1 (Berkeley) 6/4/93"; 36 static char rcsid[] = "Id: sethostent.c,v 8.5 1996/09/28 06:51:07 vixie Exp "; 37 #else 38 __RCSID("$NetBSD: sethostent.c,v 1.17 2012/03/20 17:44:18 matt Exp $"); 39 #endif 40 #endif /* LIBC_SCCS and not lint */ 41 42 #include "namespace.h" 43 #include <sys/param.h> 44 #include <netinet/in.h> 45 #include <arpa/nameser.h> 46 #include <netdb.h> 47 #include <resolv.h> 48 49 #ifdef __weak_alias 50 __weak_alias(sethostent,_sethostent) 51 __weak_alias(endhostent,_endhostent) 52 #endif 53 54 void _endhtent(void); 55 #ifndef _REENTRANT 56 void res_close(void); 57 #endif 58 void _sethtent(int); 59 60 void 61 /*ARGSUSED*/ 62 sethostent(int stayopen) 63 { 64 #ifndef _REENTRANT 65 if ((_res.options & RES_INIT) == 0 && res_init() == -1) 66 return; 67 if (stayopen) 68 _res.options |= RES_STAYOPEN | RES_USEVC; 69 #endif 70 _sethtent(stayopen); 71 } 72 73 void 74 endhostent(void) 75 { 76 #ifndef _REENTRANT 77 _res.options &= ~(RES_STAYOPEN | RES_USEVC); 78 res_close(); 79 #endif 80 _endhtent(); 81 } 82