/*  * 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 Dosboot	Dosboot;typedef struct Dos	Dos;typedef struct Dosdir	Dosdir;typedef struct Dosfile	Dosfile;typedef struct Dospart	Dospart; struct Dospart{	uchar flag;		/* active flag */	uchar shead;		/* starting head */	uchar scs[2];		/* starting cylinder/sector */	uchar type;		/* partition type */	uchar ehead;		/* ending head */	uchar ecs[2];		/* ending cylinder/sector */	uchar start[4];		/* starting sector */	uchar len[4];		/* length in sectors */}; #define FAT12	0x01#define FAT16	0x04#define EXTEND	0x05#define FATHUGE	0x06#define FAT32	0x0b#define FAT32X	0x0c#define EXTHUGE	0x0f#define DMDDO	0x54#define PLAN9	0x39#define LEXTEND 0x85 struct Dosfile{	Dos	*dos;		/* owning dos file system */	char	name[8];	char	ext[3];	uchar	attr;	long	length;	long	pstart;		/* physical start cluster address */	long	pcurrent;	/* physical current cluster address */	long	lcurrent;	/* logical current cluster address */	long	offset;}; struct Dos{	long	start;		/* start of file system */	int	sectsize;	/* in bytes */	int	clustsize;	/* in sectors */	int	clustbytes;	/* in bytes */	int	nresrv;		/* sectors */	int	nfats;		/* usually 2 */	int	rootsize;	/* number of entries */	int	volsize;	/* in sectors */	int	mediadesc;	int	fatsize;	/* in sectors */	int	fatclusters;	int	fatbits;	/* 12 or 16 */	long	fataddr;	/* sector number */	long	rootaddr;	long	rootclust;	long	dataaddr;	long	freeptr;}; extern int	dosinit(Fs*);