minix/lib/libc/ip/getproto.c

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2005-04-21 16:53:53 +02:00
/*
* Copyright (c) 1983 Regents of the University of California.
* All rights reserved.
*
* Redistribution and use in source and binary forms are permitted
* provided that: (1) source distributions retain this entire copyright
* notice and comment, and (2) distributions including binaries display
* the following acknowledgement: ``This product includes software
* developed by the University of California, Berkeley and its contributors''
* in the documentation or other materials provided with the distribution
* and in all advertising materials mentioning features or use of this
* software. Neither the name of the University nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
*/
#if defined(LIBC_SCCS) && !defined(lint)
static char sccsid[] = "@(#)getproto.c 5.6 (Berkeley) 6/1/90";
#endif /* LIBC_SCCS and not lint */
#include <stddef.h>
#ifdef _MINIX
#include <ansi.h>
#include <net/gen/netdb.h>
#endif
extern int _proto_stayopen;
struct protoent *
getprotobynumber(proto)
register int proto;
{
register struct protoent *p;
setprotoent(_proto_stayopen);
while (p = getprotoent())
if (p->p_proto == proto)
break;
if (!_proto_stayopen)
endprotoent();
return (p);
}