NetBSD/lib/libc/net/getprotoname.c

75 lines
2.7 KiB
C

/* $NetBSD: getprotoname.c,v 1.6 1997/07/21 14:07:59 jtc Exp $ */
/*
* Copyright (c) 1983, 1993
* The 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 <sys/cdefs.h>
#if defined(LIBC_SCCS) && !defined(lint)
#if 0
static char sccsid[] = "@(#)getprotoname.c 8.1 (Berkeley) 6/4/93";
#else
__RCSID("$NetBSD: getprotoname.c,v 1.6 1997/07/21 14:07:59 jtc Exp $");
#endif
#endif /* LIBC_SCCS and not lint */
#include "namespace.h"
#include <netdb.h>
#include <string.h>
#ifdef __weak_alias
__weak_alias(getprotobyname,_getprotobyname);
#endif
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()) != NULL) {
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);
}