/** @File | |
Return the local network address portion of an internet address. | |
Copyright (c) 2011, Intel Corporation. All rights reserved.<BR> | |
This program and the accompanying materials are licensed and made available under | |
the terms and conditions of the BSD License that accompanies this distribution. | |
The full text of the license may be found at | |
http://opensource.org/licenses/bsd-license. | |
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, | |
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. | |
* 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. 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. | |
NetBSD: inet_lnaof.c,v 1.1 2004/05/20 23:13:02 christos Exp | |
inet_lnaof.c 8.1 (Berkeley) 6/4/93 | |
**/ | |
#include <LibConfig.h> | |
#include "namespace.h" | |
#include <sys/param.h> | |
#include <netinet/in.h> | |
#include <arpa/inet.h> | |
#ifdef __weak_alias | |
__weak_alias(inet_lnaof,_inet_lnaof) | |
#endif | |
/* | |
* Return the local network address portion of an | |
* internet address; handles class a/b/c network | |
* number formats. | |
*/ | |
in_addr_t | |
inet_lnaof(struct in_addr in) | |
{ | |
in_addr_t i = ntohl(in.s_addr); | |
if (IN_CLASSA(i)) | |
return ((i)&IN_CLASSA_HOST); | |
else if (IN_CLASSB(i)) | |
return ((i)&IN_CLASSB_HOST); | |
else | |
return ((i)&IN_CLASSC_HOST); | |
} |