getprotoname.c

MIPS处理器的bootloader,龙芯就是用的修改过的PMON2

/* $Id: getprotoname.c,v 1.2 2002/08/10 13:05:26 pefo Exp $ */
/*
 * Copyright (c) 1983 Regents of the University of California.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *	This product includes software developed by the University of
 *	California, Berkeley and its contributors.
 * 4. 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 BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

#include <netdb.h>
#include <string.h>

#ifdef PMON
#include <sys/types.h>
#include <netinet/in.h>

struct protoent *
getprotobyname(name)
    register const char *name;
{
    static struct protoent proto;
    static char *proto_aliases[1];
    static char pname[8];
    int n;

    if (strcmp (name, "icmp") == 0)
      n = IPPROTO_ICMP;
    else if (strcmp (name, "tcp") == 0)
      n = IPPROTO_TCP;
    else if (strcmp (name, "udp") == 0)
      n = IPPROTO_UDP;
    else
      return (struct protoent *)NULL;

    strcpy (pname, name);
    proto.p_name = pname;
    proto.p_proto = n;
    proto_aliases[0] = NULL;
    proto.p_aliases = proto_aliases;
    return &proto;
}
#else
extern int _proto_stayopen;

struct protoent *
getprotobyname(name)
	register const char *name;
{
	register struct protoent *p;
	register char **cp;

	setprotoent(_proto_stayopen);
	while (p = getprotoent()) {
		if (strcmp(p->p_name, name) == 0)
			break;
		for (cp = p->p_aliases; *cp != 0; cp++)
			if (strcmp(*cp, name) == 0)
				goto found;
	}
found:
	if (!_proto_stayopen)
		endprotoent();
	return (p);
}
#endif