mirror of https://github.com/acidanthera/audk.git
71 lines
2.8 KiB
C
71 lines
2.8 KiB
C
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/** @File
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Return the local network address portion of an internet address.
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Copyright (c) 2011, Intel Corporation. All rights reserved.<BR>
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This program and the accompanying materials are licensed and made available under
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the terms and conditions of the BSD License that accompanies this distribution.
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The full text of the license may be found at
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http://opensource.org/licenses/bsd-license.
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THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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* Copyright (c) 1983, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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NetBSD: inet_lnaof.c,v 1.1 2004/05/20 23:13:02 christos Exp
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inet_lnaof.c 8.1 (Berkeley) 6/4/93
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**/
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#include <LibConfig.h>
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#include "namespace.h"
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#include <sys/param.h>
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#include <netinet/in.h>
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#include <arpa/inet.h>
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#ifdef __weak_alias
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__weak_alias(inet_lnaof,_inet_lnaof)
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#endif
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/*
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* Return the local network address portion of an
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* internet address; handles class a/b/c network
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* number formats.
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*/
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in_addr_t
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inet_lnaof(struct in_addr in)
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{
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in_addr_t i = ntohl(in.s_addr);
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if (IN_CLASSA(i))
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return ((i)&IN_CLASSA_HOST);
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else if (IN_CLASSB(i))
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return ((i)&IN_CLASSB_HOST);
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else
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return ((i)&IN_CLASSC_HOST);
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}
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