usr/src/lib/libc/net/getproto.c

/*
 * Copyright (c) 1983 Regents of the University of California.
 * All rights reserved.  The Berkeley software License Agreement
 * specifies the terms and conditions for redistribution.
 */

#if defined(LIBC_SCCS) && !defined(lint)
static char sccsid[] = "@(#)getproto.c  5.3 (Berkeley) %G%";
#endif LIBC_SCCS and not lint

#include <netdb.h>

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);
}