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352 lines
10 KiB
C
352 lines
10 KiB
C
/*++
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Copyright (c) 1989-2000 Microsoft Corporation
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Module Name:
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FatData.c
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Abstract:
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This module declares the global data used by the Fat file system.
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--*/
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#ifndef _FATDATA_
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#define _FATDATA_
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//
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// The global fsd data record, and a global zero large integer
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//
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extern FAT_DATA FatData;
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extern IO_STATUS_BLOCK FatGarbageIosb;
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extern NPAGED_LOOKASIDE_LIST FatIrpContextLookasideList;
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extern NPAGED_LOOKASIDE_LIST FatNonPagedFcbLookasideList;
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extern NPAGED_LOOKASIDE_LIST FatEResourceLookasideList;
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extern SLIST_HEADER FatCloseContextSList;
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extern FAST_MUTEX FatCloseQueueMutex;
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extern PDEVICE_OBJECT FatDiskFileSystemDeviceObject;
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extern PDEVICE_OBJECT FatCdromFileSystemDeviceObject;
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extern LARGE_INTEGER FatLargeZero;
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extern LARGE_INTEGER FatMaxLarge;
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extern LARGE_INTEGER Fat30Milliseconds;
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extern LARGE_INTEGER Fat100Milliseconds;
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extern LARGE_INTEGER FatOneSecond;
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extern LARGE_INTEGER FatOneDay;
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extern LARGE_INTEGER FatJanOne1980;
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extern LARGE_INTEGER FatDecThirtyOne1979;
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extern FAT_TIME_STAMP FatTimeJanOne1980;
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extern LARGE_INTEGER FatMagic10000;
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#define FAT_SHIFT10000 13
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extern LARGE_INTEGER FatMagic86400000;
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#define FAT_SHIFT86400000 26
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#define FatConvert100nsToMilliseconds(LARGE_INTEGER) ( \
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RtlExtendedMagicDivide( (LARGE_INTEGER), FatMagic10000, FAT_SHIFT10000 )\
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)
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#define FatConvertMillisecondsToDays(LARGE_INTEGER) ( \
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RtlExtendedMagicDivide( (LARGE_INTEGER), FatMagic86400000, FAT_SHIFT86400000 ) \
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)
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#define FatConvertDaysToMilliseconds(DAYS) ( \
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Int32x32To64( (DAYS), 86400000 ) \
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)
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//
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// Reserve MDL for paging file io forward progress.
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//
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#define FAT_RESERVE_MDL_SIZE 16
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#ifndef __REACTOS__
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__volatile extern PMDL FatReserveMdl;
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#else
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extern __volatile PMDL FatReserveMdl;
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#endif
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extern KEVENT FatReserveEvent;
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//
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// The global structure used to contain our fast I/O callbacks
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//
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extern FAST_IO_DISPATCH FatFastIoDispatch;
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//
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// Global to store disk IO accounting Enabled/Disabled state
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//
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extern LOGICAL FatDiskAccountingEnabled;
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//
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// Read ahead amount used for normal data files
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//
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#define READ_AHEAD_GRANULARITY (0x10000)
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//
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// Define maximum number of parallel Reads or Writes that will be generated
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// per one request.
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//
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#define FAT_MAX_IO_RUNS_ON_STACK ((ULONG) 5)
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//
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// Define the maximum number of delayed closes.
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//
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#define FAT_MAX_DELAYED_CLOSES ((ULONG)16)
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extern ULONG FatMaxDelayedCloseCount;
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//
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// The maximum chunk size we use when defragmenting files.
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//
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#define FAT_DEFAULT_DEFRAG_CHUNK_IN_BYTES (0x10000)
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//
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// Define constant for time rounding.
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//
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#define TenMSec (10*1000*10)
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#define TwoSeconds (2*1000*1000*10)
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#define AlmostTenMSec (TenMSec - 1)
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#define AlmostTwoSeconds (TwoSeconds - 1)
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// too big #define HighPartPerDay (24*60*60*1000*1000*10 >> 32)
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#define HighPartPerDay (52734375 >> 18)
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//
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// The global Fat debug level variable, its values are:
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//
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// 0x00000000 Always gets printed (used when about to bug check)
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//
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// 0x00000001 Error conditions
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// 0x00000002 Debug hooks
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// 0x00000004 Catch exceptions before completing Irp
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// 0x00000008
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//
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// 0x00000010
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// 0x00000020
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// 0x00000040
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// 0x00000080
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//
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// 0x00000100
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// 0x00000200
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// 0x00000400
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// 0x00000800
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//
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// 0x00001000
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// 0x00002000
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// 0x00004000
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// 0x00008000
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//
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// 0x00010000
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// 0x00020000
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// 0x00040000
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// 0x00080000
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//
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// 0x00100000
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// 0x00200000
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// 0x00400000
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// 0x00800000
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//
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// 0x01000000
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// 0x02000000
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// 0x04000000
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// 0x08000000
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//
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// 0x10000000
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// 0x20000000
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// 0x40000000
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// 0x80000000
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//
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#ifdef FASTFATDBG
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#define DEBUG_TRACE_ERROR (0x00000001)
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#define DEBUG_TRACE_DEBUG_HOOKS (0x00000002)
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#define DEBUG_TRACE_CATCH_EXCEPTIONS (0x00000004)
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#define DEBUG_TRACE_UNWIND (0x00000008)
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#define DEBUG_TRACE_CLEANUP (0x00000010)
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#define DEBUG_TRACE_CLOSE (0x00000020)
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#define DEBUG_TRACE_CREATE (0x00000040)
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#define DEBUG_TRACE_DIRCTRL (0x00000080)
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#define DEBUG_TRACE_EA (0x00000100)
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#define DEBUG_TRACE_FILEINFO (0x00000200)
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#define DEBUG_TRACE_FSCTRL (0x00000400)
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#define DEBUG_TRACE_LOCKCTRL (0x00000800)
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#define DEBUG_TRACE_READ (0x00001000)
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#define DEBUG_TRACE_VOLINFO (0x00002000)
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#define DEBUG_TRACE_WRITE (0x00004000)
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#define DEBUG_TRACE_FLUSH (0x00008000)
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#define DEBUG_TRACE_DEVCTRL (0x00010000)
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#define DEBUG_TRACE_SHUTDOWN (0x00020000)
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#define DEBUG_TRACE_FATDATA (0x00040000)
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#define DEBUG_TRACE_PNP (0x00080000)
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#define DEBUG_TRACE_ACCHKSUP (0x00100000)
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#define DEBUG_TRACE_ALLOCSUP (0x00200000)
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#define DEBUG_TRACE_DIRSUP (0x00400000)
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#define DEBUG_TRACE_FILOBSUP (0x00800000)
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#define DEBUG_TRACE_NAMESUP (0x01000000)
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#define DEBUG_TRACE_VERFYSUP (0x02000000)
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#define DEBUG_TRACE_CACHESUP (0x04000000)
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#define DEBUG_TRACE_SPLAYSUP (0x08000000)
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#define DEBUG_TRACE_DEVIOSUP (0x10000000)
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#define DEBUG_TRACE_STRUCSUP (0x20000000)
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#define DEBUG_TRACE_FSP_DISPATCHER (0x40000000)
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#define DEBUG_TRACE_FSP_DUMP (0x80000000)
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extern LONG FatDebugTraceLevel;
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extern LONG FatDebugTraceIndent;
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#define DebugTrace(INDENT,LEVEL,X,Y) { \
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LONG _i; \
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if (((LEVEL) == 0) || (FatDebugTraceLevel & (LEVEL))) { \
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_i = (ULONG)PsGetCurrentThread(); \
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DbgPrint("%08lx:",_i); \
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if ((INDENT) < 0) { \
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FatDebugTraceIndent += (INDENT); \
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} \
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if (FatDebugTraceIndent < 0) { \
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FatDebugTraceIndent = 0; \
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} \
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for (_i = 0; _i < FatDebugTraceIndent; _i += 1) { \
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DbgPrint(" "); \
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} \
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DbgPrint(X,Y); \
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if ((INDENT) > 0) { \
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FatDebugTraceIndent += (INDENT); \
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} \
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} \
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}
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#if !defined(__REACTOS__) || defined(_MSC_VER)
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#define DebugDump(STR,LEVEL,PTR) { \
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__pragma(warning(push)) \
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__pragma(warning(disable:4210)) \
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ULONG _i; \
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VOID FatDump(IN PVOID Ptr); \
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if (((LEVEL) == 0) || (FatDebugTraceLevel & (LEVEL))) { \
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_i = (ULONG)PsGetCurrentThread(); \
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DbgPrint("%08lx:",_i); \
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DbgPrint(STR); \
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if (PTR != NULL) {FatDump(PTR);} \
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NT_ASSERT(FALSE); \
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} \
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__pragma(warning(pop)) \
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}
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#else
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#define DebugDump(STR,LEVEL,PTR) { \
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ULONG _i; \
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VOID FatDump(IN PVOID Ptr); \
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if (((LEVEL) == 0) || (FatDebugTraceLevel & (LEVEL))) { \
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_i = (ULONG)PsGetCurrentThread(); \
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DbgPrint("%08lx:",_i); \
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DbgPrint(STR); \
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if (PTR != NULL) {FatDump(PTR);} \
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NT_ASSERT(FALSE); \
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} \
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}
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#endif
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#define DebugUnwind(X) { \
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if (_SEH2_AbnormalTermination()) { \
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DebugTrace(0, DEBUG_TRACE_UNWIND, #X ", Abnormal termination.\n", 0); \
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} \
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}
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//
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// The following variables are used to keep track of the total amount
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// of requests processed by the file system, and the number of requests
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// that end up being processed by the Fsp thread. The first variable
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// is incremented whenever an Irp context is created (which is always
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// at the start of an Fsd entry point) and the second is incremented
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// by read request.
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//
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extern ULONG FatFsdEntryCount;
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extern ULONG FatFspEntryCount;
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extern ULONG FatIoCallDriverCount;
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extern ULONG FatTotalTicks[];
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#define DebugDoit(X) {X;}
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extern LONG FatPerformanceTimerLevel;
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#define TimerStart(LEVEL) { \
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LARGE_INTEGER TStart, TEnd; \
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LARGE_INTEGER TElapsed; \
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TStart = KeQueryPerformanceCounter( NULL ); \
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#define TimerStop(LEVEL,s) \
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TEnd = KeQueryPerformanceCounter( NULL ); \
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TElapsed.QuadPart = TEnd.QuadPart - TStart.QuadPart; \
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FatTotalTicks[FatLogOf(LEVEL)] += TElapsed.LowPart; \
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if (FlagOn( FatPerformanceTimerLevel, (LEVEL))) { \
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DbgPrint("Time of %s %ld\n", (s), TElapsed.LowPart ); \
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} \
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}
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//
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// I need this because C can't support conditional compilation within
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// a macro.
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//
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extern PVOID FatNull;
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#else
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#define DebugTrace(INDENT,LEVEL,X,Y) {NOTHING;}
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#define DebugDump(STR,LEVEL,PTR) {NOTHING;}
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#define DebugUnwind(X) {NOTHING;}
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#define DebugDoit(X) {NOTHING;}
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#define TimerStart(LEVEL)
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#define TimerStop(LEVEL,s)
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#define FatNull NULL
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#endif // FASTFATDBG
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//
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// The following macro is for all people who compile with the DBG switch
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// set, not just fastfat dbg users
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//
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#if DBG
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#define DbgDoit(X) {X;}
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#else
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#define DbgDoit(X) {NOTHING;}
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#endif // DBG
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#if DBG
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extern NTSTATUS FatBreakOnInterestingIoCompletion;
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extern NTSTATUS FatBreakOnInterestingExceptionStatus;
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extern NTSTATUS FatBreakOnInterestingIrpCompletion;
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extern BOOLEAN FatTestRaisedStatus;
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#endif
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#endif // _FATDATA_
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