xsfsbase.h

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// XSFS Basic Definitions

#ifndef __XSFSBASE_H
#define __XSFSBASE_H

#include "vfsio.h"
#include "xsfs.h"

#ifdef _MSC_VER
#pragma pack(push, 1)
#endif

typedef struct _XSFS
{
	XSFSDESC desc;
	IOH handle;
	void *buffer;		// the size should not be smaller than one unit
} XSFS;
typedef XSFS* HXSFS;

typedef struct _XSSTREAM
{
	HXSFS xsfs;
	XSFSSTREAM stream;
	_u32 sector, offset;	// used for updating stream definition
} XSSTREAM;
typedef XSSTREAM* HXSSTREAM;

#ifdef _MSC_VER
#pragma pack(pop)
#endif

static inline _u32 i_xsfs_unit_size(HXSFS xsfs)
{ return xsfs->desc.n_scale*xsfs->desc.sector_size; }

static inline _u32 i_xsfs_start_sector(HXSFS xsfs)
{ return xsfs->desc.n_reserved+xsfs->desc.n_ss_desc; }

static inline _u32 i_xsfs_sector_to_unit(HXSFS xsfs, _u32 sector)
{ return sector<i_xsfs_start_sector(xsfs) ? 0 : ((sector-i_xsfs_start_sector(xsfs))/xsfs->desc.n_scale); }

#endif