1 /* 2 * Copyright (c) 1983 Regents of the University of California. 3 * All rights reserved. 4 * 5 * %sccs.include.redist.c% 6 */ 7 8 #if defined(LIBC_SCCS) && !defined(lint) 9 static char sccsid[] = "@(#)getproto.c 5.6 (Berkeley) 06/01/90"; 10 #endif /* LIBC_SCCS and not lint */ 11 12 #include <netdb.h> 13 14 extern int _proto_stayopen; 15 16 struct protoent * 17 getprotobynumber(proto) 18 register int proto; 19 { 20 register struct protoent *p; 21 22 setprotoent(_proto_stayopen); 23 while (p = getprotoent()) 24 if (p->p_proto == proto) 25 break; 26 if (!_proto_stayopen) 27 endprotoent(); 28 return (p); 29 } 30