1 /* 2 * Copyright (c) 1983 Regents of the University of California. 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms are permitted 6 * provided that the above copyright notice and this paragraph are 7 * duplicated in all such forms and that any documentation, 8 * advertising materials, and other materials related to such 9 * distribution and use acknowledge that the software was developed 10 * by the University of California, Berkeley. The name of the 11 * University may not be used to endorse or promote products derived 12 * from this software without specific prior written permission. 13 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR 14 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED 15 * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE. 16 */ 17 18 #if defined(LIBC_SCCS) && !defined(lint) 19 static char sccsid[] = "@(#)getservbyport.c 5.5 (Berkeley) 06/27/88"; 20 #endif /* LIBC_SCCS and not lint */ 21 22 #include <netdb.h> 23 24 extern int _serv_stayopen; 25 26 struct servent * 27 getservbyport(port, proto) 28 int port; 29 char *proto; 30 { 31 register struct servent *p; 32 33 setservent(_serv_stayopen); 34 while (p = getservent()) { 35 if (p->s_port != port) 36 continue; 37 if (proto == 0 || strcmp(p->s_proto, proto) == 0) 38 break; 39 } 40 if (!_serv_stayopen) 41 endservent(); 42 return (p); 43 } 44