getprotoname.c revision 1.1
1/* $NetBSD: getprotoname.c,v 1.4 1995/02/25 06:20:36 cgd 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. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * This product includes software developed by the University of 18 * California, Berkeley and its contributors. 19 * 4. Neither the name of the University nor the names of its contributors 20 * may be used to endorse or promote products derived from this software 21 * without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 */ 35 36#if defined(LIBC_SCCS) && !defined(lint) 37#if 0 38static char sccsid[] = "@(#)getprotoname.c 8.1 (Berkeley) 6/4/93"; 39#else 40static char rcsid[] = "$NetBSD: getprotoname.c,v 1.4 1995/02/25 06:20:36 cgd Exp $"; 41#endif 42#endif /* LIBC_SCCS and not lint */ 43 44#include <netdb.h> 45#include <string.h> 46 47extern int _proto_stayopen; 48 49struct protoent * 50getprotobyname(name) 51 register const char *name; 52{ 53 register struct protoent *p; 54 register char **cp; 55 56 setprotoent(_proto_stayopen); 57 while (p = getprotoent()) { 58 if (strcmp(p->p_name, name) == 0) 59 break; 60 for (cp = p->p_aliases; *cp != 0; cp++) 61 if (strcmp(*cp, name) == 0) 62 goto found; 63 } 64found: 65 if (!_proto_stayopen) 66 endprotoent(); 67 return (p); 68} 69