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/************************************************************************* 
* 
* File: sfsd.h 
* 
* Module: Sample File System Driver (Kernel mode execution only) 
* 
* Description: 
*	The main include file for the sample file system driver. 
* 
* Author: R. Nagar 
* 
* (c) 1996-97 Rajeev Nagar, All Rights Reserved 
* 
*************************************************************************/ 
 
#ifndef	_SFSD_SFSD_H_ 
#define	_SFSD_SFSD_H_ 
 
// some constant definitions 
#define	SFSD_PANIC_IDENTIFIER		(0x86427531) 
 
// any directory information SFSD obtains from the local file system 
//	will use a buffer of the following size ... (in KB) 
#define	SFSD_READ_DIR_BUFFER_LENGTH	(512) 
 
// Common include files - should be in the include dir of the MS supplied IFS Kit 
#include	 
 
// the following include files should be in the inc sub-dir associated with this driver 
#include	"struct.h" 
#include	"protos.h" 
#include "errmsg.h" 
 
// global variables - minimize these 
extern SFsdData				SFsdGlobalData; 
 
// try-finally simulation 
#define try_return(S)	{ S; goto try_exit; } 
#define try_return1(S)	{ S; goto try_exit1; } 
#define try_return2(S)	{ S; goto try_exit2; } 
 
// some global (helpful) macros 
#define	SFsdSetFlag(Flag, Value)	((Flag) |= (Value)) 
#define	SFsdClearFlag(Flag, Value)	((Flag) &= ~(Value)) 
 
#define	SFsdQuadAlign(Value)			((((uint32)(Value)) + 7) & 0xfffffff8) 
 
// to perform a bug-check (panic), the following macro is used 
#define	SFsdPanic(arg1, arg2, arg3)					\ 
	(KeBugCheckEx(SFSD_PANIC_IDENTIFIER, SFSD_BUG_CHECK_ID | __LINE__, (uint32)(arg1), (uint32)(arg2), (uint32)(arg3))) 
 
// a convenient macro (must be invoked in the context of the thread that acquired the resource) 
#define	SFsdReleaseResource(Resource)	\ 
	(ExReleaseResourceForThreadLite((Resource), ExGetCurrentResourceThread())) 
 
// each file has a unique bug-check identifier associated with it. 
//	Here is a list of constant definitions for these identifiers 
#define	SFSD_FILE_INIT										(0x00000001) 
#define	SFSD_FILE_REGISTRY								(0x00000002) 
#define	SFSD_FILE_CREATE									(0x00000003) 
#define	SFSD_FILE_CLEANUP									(0x00000004) 
#define	SFSD_FILE_CLOSE									(0x00000005) 
#define	SFSD_FILE_READ										(0x00000006) 
#define	SFSD_FILE_WRITE									(0x00000007) 
#define	SFSD_FILE_INFORMATION							(0x00000008) 
#define	SFSD_FILE_FLUSH									(0x00000009) 
#define	SFSD_FILE_VOL_INFORMATION						(0x0000000A) 
#define	SFSD_FILE_DIR_CONTROL							(0x0000000B) 
#define	SFSD_FILE_FILE_CONTROL							(0x0000000C) 
#define	SFSD_FILE_DEVICE_CONTROL						(0x0000000D) 
#define	SFSD_FILE_SHUTDOWN								(0x0000000E) 
#define	SFSD_FILE_LOCK_CONTROL							(0x0000000F) 
#define	SFSD_FILE_SECURITY								(0x00000010) 
#define	SFSD_FILE_EXT_ATTR								(0x00000011) 
#define	SFSD_FILE_MISC										(0x00000012) 
#define	SFSD_FILE_FAST_IO									(0x00000013) 
 
#if DBG 
#define	SFsdBreakPoint()	DbgBreakPoint() 
#else 
#define	SFsdBreakPoint() 
#endif 
 
#endif	// _SFSD_SFSD_H_