1 /* $NetBSD: getservbyport_r.c,v 1.2 2004/03/04 02:30:41 enami Exp $ */ 2 3 /* 4 * Copyright (c) 1983, 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[] = "@(#)getservbyport.c 8.1 (Berkeley) 6/4/93"; 36 #else 37 __RCSID("$NetBSD: getservbyport_r.c,v 1.2 2004/03/04 02:30:41 enami Exp $"); 38 #endif 39 #endif /* LIBC_SCCS and not lint */ 40 41 #include "namespace.h" 42 #include <netdb.h> 43 #include <string.h> 44 45 #ifdef __weak_alias 46 __weak_alias(getservbyport_r,_getservbyport_r) 47 #endif 48 49 struct servent * 50 getservbyport_r(int port, const char *proto, struct servent *sp, 51 struct servent_data *sd) 52 { 53 struct servent *s; 54 55 setservent_r(sd->stayopen, sd); 56 while ((s = getservent_r(sp, sd)) != NULL) { 57 if (s->s_port != port) 58 continue; 59 if (proto == NULL || strcmp(s->s_proto, proto) == 0) 60 break; 61 } 62 if (!sd->stayopen) 63 if (sd->fp != NULL) { 64 (void)fclose(sd->fp); 65 sd->fp = NULL; 66 } 67 return s; 68 } 69