00b67f09dd
Also known as ISC bind. This import adds utilities such as host(1), dig(1), and nslookup(1), as well as many other tools and libraries. Change-Id: I035ca46e64f1965d57019e773f4ff0ef035e4aa3
44 lines
1.5 KiB
C
44 lines
1.5 KiB
C
/* $NetBSD: magic.h,v 1.4 2014/12/10 04:38:00 christos Exp $ */
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/*
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* Copyright (C) 2004-2007 Internet Systems Consortium, Inc. ("ISC")
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* Copyright (C) 1999-2001 Internet Software Consortium.
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*
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* Permission to use, copy, modify, and/or distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
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* REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
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* AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
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* INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
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* LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
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* OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
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* PERFORMANCE OF THIS SOFTWARE.
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*/
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/* Id: magic.h,v 1.18 2007/06/19 23:47:18 tbox Exp */
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#ifndef ISC_MAGIC_H
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#define ISC_MAGIC_H 1
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/*! \file isc/magic.h */
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typedef struct {
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unsigned int magic;
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} isc__magic_t;
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/*%
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* To use this macro the magic number MUST be the first thing in the
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* structure, and MUST be of type "unsigned int".
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* The intent of this is to allow magic numbers to be checked even though
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* the object is otherwise opaque.
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*/
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#define ISC_MAGIC_VALID(a,b) (((a) != NULL) && \
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(((const isc__magic_t *)(a))->magic == (b)))
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#define ISC_MAGIC(a, b, c, d) ((a) << 24 | (b) << 16 | (c) << 8 | (d))
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#endif /* ISC_MAGIC_H */
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