/usr/include/afs/kaport.h is in libopenafs-dev 1.6.9-2+deb8u7.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 | /*
 * Copyright 2000, International Business Machines Corporation and others.
 * All Rights Reserved.
 *
 * This software has been released under the terms of the IBM Public
 * License.  For details, see the LICENSE file in the top-level source
 * directory or online at http://www.openafs.org/dl/license10.html
 */
/*
 * some macros to permit a couple of new features while remaining compatible
 * and reasonably portable...
 * could tighten up 0 and 3 a little, but I've left them like this for now
 * for ease of understanding.
 * assumes sizeof(afs_int32) == 4, but then, so does the rest of AFS...
 */
#ifndef KAPORT_H
#define KAPORT_H
#define unpack_long(src, dst) { \
dst[0] = ((unsigned char)(((afs_uint32)(src) & 0xff000000) >> 24) & 0xff); \
dst[1] = ((unsigned char)(((afs_uint32)(src) & 0x00ff0000) >> 16) & 0xff); \
dst[2] = ((unsigned char)(((afs_uint32)(src) & 0x0000ff00) >>  8) & 0xff); \
dst[3] = ((unsigned char)(((afs_uint32)(src) & 0x000000ff) >>  0) & 0xff); }
#define pack_long(src) ( \
(afs_uint32) ( \
		 ((afs_uint32) ((src)[0] & 0xff) << 24) | \
		 ((afs_uint32) ((src)[1] & 0xff) << 16) | \
		 ((afs_uint32) ((src)[2] & 0xff) <<  8) | \
		 ((afs_uint32) ((src)[3] & 0xff) <<  0) ) )
#endif /* KAPORT_H */
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