/*  * This file is part of the UCB release of Plan 9. It is subject to the license * terms in the LICENSE file found in the top-level directory of this * distribution and at http://akaros.cs.berkeley.edu/files/Plan9License. No * part of the UCB release of Plan 9, including this file, may be copied, * modified, propagated, or distributed except according to the terms contained * in the LICENSE file. */ typedef struct ZipHead	ZipHead; enum{	/*	 * magic numbers	 */	ZHeader		= 0x04034b50,	ZCHeader	= 0x02014b50,	ZECHeader	= 0x06054b50, 	/*	 * "general purpose flag" bits	 */	ZEncrypted	= 1 << 0,	ZTrailInfo	= 1 << 3,	/* uncsize, csize, and crc are in trailer */	ZCompPatch	= 1 << 5,	/* compression patched data */ 	ZCrcPoly	= 0xedb88320, 	/*	 * compression method	 */	ZDeflate	= 8, 	/*	 * internal file attributes	 */	ZIsText		= 1 << 0, 	/*	 * file attribute interpretation, from high byte of version	 */	ZDos		= 0,	ZAmiga		= 1,	ZVMS		= 2,	ZUnix		= 3,	ZVMCMS		= 4,	ZAtariST	= 5,	ZOS2HPFS	= 6,	ZMac		= 7,	ZZsys		= 8,	ZCPM		= 9,	ZNtfs		= 10, 	/*	 * external attribute flags for ZDos	 */	ZDROnly		= 0x01,	ZDHidden	= 0x02,	ZDSystem	= 0x04,	ZDVLable	= 0x08,	ZDDir		= 0x10,	ZDArch		= 0x20, 	ZHeadSize	= 4 + 2 + 2 + 2 + 2 + 2 + 4 + 4 + 4 + 2 + 2,	ZHeadCrc	= 4 + 2 + 2 + 2 + 2 + 2,	ZTrailSize	= 4 + 4 + 4,	ZCHeadSize	= 4 + 2 + 2 + 2 + 2 + 2 + 2 + 4 + 4 + 4 + 2 + 2 + 2 + 2 + 2 + 4 + 4,	ZECHeadSize	= 4 + 2 + 2 + 2 + 2 + 4 + 4 + 2,}; /* * interesting info from a zip header */struct ZipHead{	int	madeos;			/* version made by */	int	madevers;	int	extos;			/* version needed to extract */	int	extvers;	int	flags;			/* general purpose bit flag */	int	meth;	int	modtime;	int	moddate;	ulong	crc;	ulong	csize;	ulong	uncsize;	int	iattr;	ulong	eattr;	ulong	off;	char	*file;};