ReactOS 0.4.16-dev-197-g92996da
Macros | Functions
fatx.c File Reference
#include "vfatxlib.h"
#include <ndk/kefuncs.h>
#include <ndk/rtlfuncs.h>
#include <debug.h>
Include dependency graph for fatx.c:

Go to the source code of this file.

Macros

#define NDEBUG
 

Functions

static ULONG GetShiftCount (IN ULONG Value)
 
static ULONG CalcVolumeSerialNumber (VOID)
 
static NTSTATUS FatxWriteBootSector (IN HANDLE FileHandle, IN PFATX_BOOT_SECTOR BootSector, IN OUT PFORMAT_CONTEXT Context)
 
static NTSTATUS Fatx16WriteFAT (IN HANDLE FileHandle, IN ULONG SectorOffset, IN ULONG FATSectors, IN OUT PFORMAT_CONTEXT Context)
 
static NTSTATUS Fatx32WriteFAT (IN HANDLE FileHandle, IN ULONG SectorOffset, IN ULONG FATSectors, IN OUT PFORMAT_CONTEXT Context)
 
static NTSTATUS FatxWriteRootDirectory (IN HANDLE FileHandle, IN ULONG FATSectors, IN OUT PFORMAT_CONTEXT Context)
 
NTSTATUS FatxFormat (IN HANDLE FileHandle, IN PPARTITION_INFORMATION PartitionInfo, IN PDISK_GEOMETRY DiskGeometry, IN BOOLEAN QuickFormat, IN OUT PFORMAT_CONTEXT Context)
 

Macro Definition Documentation

◆ NDEBUG

#define NDEBUG

Definition at line 15 of file fatx.c.

Function Documentation

◆ CalcVolumeSerialNumber()

static ULONG CalcVolumeSerialNumber ( VOID  )
static

Definition at line 34 of file fatx.c.

35{
36 LARGE_INTEGER SystemTime;
37 TIME_FIELDS TimeFields;
38 ULONG Serial;
39 PUCHAR Buffer;
40
41 NtQuerySystemTime (&SystemTime);
42 RtlTimeToTimeFields (&SystemTime, &TimeFields);
43
44 Buffer = (PUCHAR)&Serial;
45 Buffer[0] = (UCHAR)(TimeFields.Year & 0xFF) + (UCHAR)(TimeFields.Hour & 0xFF);
46 Buffer[1] = (UCHAR)(TimeFields.Year >> 8) + (UCHAR)(TimeFields.Minute & 0xFF);
47 Buffer[2] = (UCHAR)(TimeFields.Month & 0xFF) + (UCHAR)(TimeFields.Second & 0xFF);
48 Buffer[3] = (UCHAR)(TimeFields.Day & 0xFF) + (UCHAR)(TimeFields.Milliseconds & 0xFF);
49
50 return Serial;
51}
Buffer
Definition: bufpool.h:45
RtlTimeToTimeFields
BOOLEAN RtlTimeToTimeFields(IN PLARGE_INTEGER Time, IN PTIME_FIELDS TimeFields)
Definition: env_spec_w32.cpp:895
TimeFields
static PTIME_FIELDS TimeFields
Definition: time.c:104
NtQuerySystemTime
NTSTATUS NTAPI NtQuerySystemTime(OUT PLARGE_INTEGER SystemTime)
Definition: time.c:569
_TIME_FIELDS
Definition: env_spec_w32.h:710
_TIME_FIELDS::Month
USHORT Month
Definition: env_spec_w32.h:712
_TIME_FIELDS::Milliseconds
USHORT Milliseconds
Definition: env_spec_w32.h:717
_TIME_FIELDS::Minute
USHORT Minute
Definition: env_spec_w32.h:715
_TIME_FIELDS::Day
USHORT Day
Definition: env_spec_w32.h:713
_TIME_FIELDS::Year
USHORT Year
Definition: env_spec_w32.h:711
_TIME_FIELDS::Hour
USHORT Hour
Definition: env_spec_w32.h:714
_TIME_FIELDS::Second
USHORT Second
Definition: env_spec_w32.h:716
PUCHAR
unsigned char * PUCHAR
Definition: typedefs.h:53
ULONG
uint32_t ULONG
Definition: typedefs.h:59
_LARGE_INTEGER
Definition: typedefs.h:103
UCHAR
unsigned char UCHAR
Definition: xmlstorage.h:181

Referenced by FatxFormat().

◆ Fatx16WriteFAT()

static NTSTATUS Fatx16WriteFAT ( IN HANDLE  FileHandle,
IN ULONG  SectorOffset,
IN ULONG  FATSectors,
IN OUT PFORMAT_CONTEXT  Context 
)
static

Definition at line 105 of file fatx.c.

109{
110 IO_STATUS_BLOCK IoStatusBlock;
111 NTSTATUS Status;
112 PUCHAR Buffer;
113 LARGE_INTEGER FileOffset;
114 ULONG i;
115 ULONG Sectors;
116
117 /* Allocate buffer */
118 Buffer = (PUCHAR)RtlAllocateHeap(RtlGetProcessHeap(),
119 0,
120 32 * 1024);
121 if (Buffer == NULL)
122 return STATUS_INSUFFICIENT_RESOURCES;
123
124 /* Zero the buffer */
125 memset(Buffer, 0, 32 * 1024);
126
127 /* FAT cluster 0 */
128 Buffer[0] = 0xf8; /* Media type */
129 Buffer[1] = 0xff;
130
131 /* FAT cluster 1 */
132 Buffer[2] = 0xff; /* Clean shutdown, no disk read/write errors, end-of-cluster (EOC) mark */
133 Buffer[3] = 0xff;
134
135 /* Write first sector of the FAT */
136 FileOffset.QuadPart = (SectorOffset * 512) + sizeof(FATX_BOOT_SECTOR);
137 Status = NtWriteFile(FileHandle,
138 NULL,
139 NULL,
140 NULL,
141 &IoStatusBlock,
142 Buffer,
143 512,
144 &FileOffset,
145 NULL);
146 if (!NT_SUCCESS(Status))
147 {
148 DPRINT("NtWriteFile() failed (Status %lx)\n", Status);
149 RtlFreeHeap(RtlGetProcessHeap(), 0, Buffer);
150 return Status;
151 }
152
153 VfatxUpdateProgress(Context, 1);
154
155 /* Zero the begin of the buffer */
156 memset(Buffer, 0, 4);
157
158 /* Zero the rest of the FAT */
159 Sectors = 32 * 1024 / 512;
160 for (i = 1; i < FATSectors; i += Sectors)
161 {
162 /* Zero some sectors of the FAT */
163 FileOffset.QuadPart = (SectorOffset + i) * 512 + sizeof(FATX_BOOT_SECTOR) ;
164 if ((FATSectors - i) <= Sectors)
165 {
166 Sectors = FATSectors - i;
167 }
168
169 Status = NtWriteFile(FileHandle,
170 NULL,
171 NULL,
172 NULL,
173 &IoStatusBlock,
174 Buffer,
175 Sectors * 512,
176 &FileOffset,
177 NULL);
178 if (!NT_SUCCESS(Status))
179 {
180 DPRINT("NtWriteFile() failed (Status %lx)\n", Status);
181 RtlFreeHeap(RtlGetProcessHeap(), 0, Buffer);
182 return Status;
183 }
184
185 VfatxUpdateProgress(Context, Sectors);
186 }
187
188 /* Free the buffer */
189 RtlFreeHeap(RtlGetProcessHeap(), 0, Buffer);
190
191 return Status;
192}
NTSTATUS
LONG NTSTATUS
Definition: precomp.h:26
RtlAllocateHeap
PVOID NTAPI RtlAllocateHeap(IN PVOID HeapHandle, IN ULONG Flags, IN SIZE_T Size)
Definition: heap.c:590
RtlFreeHeap
BOOLEAN NTAPI RtlFreeHeap(IN PVOID HeapHandle, IN ULONG Flags, IN PVOID HeapBase)
Definition: heap.c:608
FileOffset
_In_ PFCB _In_ LONGLONG FileOffset
Definition: cdprocs.h:160
SectorOffset
#define SectorOffset(L)
Definition: cdprocs.h:1622
NULL
#define NULL
Definition: types.h:112
NT_SUCCESS
#define NT_SUCCESS(StatCode)
Definition: apphelp.c:33
FileHandle
_Must_inspect_result_ _In_opt_ PFLT_INSTANCE _Out_ PHANDLE FileHandle
Definition: fltkernel.h:1231
Status
Status
Definition: gdiplustypes.h:25
i
GLsizei GLenum const GLvoid GLsizei GLenum GLbyte GLbyte GLbyte GLdouble GLdouble GLdouble GLfloat GLfloat GLfloat GLint GLint GLint GLshort GLshort GLshort GLubyte GLubyte GLubyte GLuint GLuint GLuint GLushort GLushort GLushort GLbyte GLbyte GLbyte GLbyte GLdouble GLdouble GLdouble GLdouble GLfloat GLfloat GLfloat GLfloat GLint GLint GLint GLint GLshort GLshort GLshort GLshort GLubyte GLubyte GLubyte GLubyte GLuint GLuint GLuint GLuint GLushort GLushort GLushort GLushort GLboolean const GLdouble const GLfloat const GLint const GLshort const GLbyte const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLdouble const GLfloat const GLfloat const GLint const GLint const GLshort const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort GLenum GLenum GLenum GLfloat GLenum GLint GLenum GLenum GLenum GLfloat GLenum GLenum GLint GLenum GLfloat GLenum GLint GLint GLushort GLenum GLenum GLfloat GLenum GLenum GLint GLfloat const GLubyte GLenum GLenum GLenum const GLfloat GLenum GLenum const GLint GLenum GLint GLint GLsizei GLsizei GLint GLenum GLenum const GLvoid GLenum GLenum const GLfloat GLenum GLenum const GLint GLenum GLenum const GLdouble GLenum GLenum const GLfloat GLenum GLenum const GLint GLsizei GLuint GLfloat GLuint GLbitfield GLfloat GLint GLuint GLboolean GLenum GLfloat GLenum GLbitfield GLenum GLfloat GLfloat GLint GLint const GLfloat GLenum GLfloat GLfloat GLint GLint GLfloat GLfloat GLint GLint const GLfloat GLint GLfloat GLfloat GLint GLfloat GLfloat GLint GLfloat GLfloat const GLdouble const GLfloat const GLdouble const GLfloat GLint i
Definition: glfuncs.h:248
IoStatusBlock
static OUT PIO_STATUS_BLOCK IoStatusBlock
Definition: pipe.c:75
NtWriteFile
NTSYSAPI NTSTATUS NTAPI NtWriteFile(IN HANDLE hFile, IN HANDLE hEvent OPTIONAL, IN PIO_APC_ROUTINE IoApcRoutine OPTIONAL, IN PVOID IoApcContext OPTIONAL, OUT PIO_STATUS_BLOCK pIoStatusBlock, IN PVOID WriteBuffer, IN ULONG WriteBufferLength, IN PLARGE_INTEGER FileOffset OPTIONAL, IN PULONG LockOperationKey OPTIONAL)
memset
#define memset(x, y, z)
Definition: compat.h:39
DPRINT
#define DPRINT
Definition: sndvol32.h:73
_FATX_BOOT_SECTOR
Definition: fatx.c:19
_IO_STATUS_BLOCK
Definition: env_spec_w32.h:870
STATUS_INSUFFICIENT_RESOURCES
#define STATUS_INSUFFICIENT_RESOURCES
Definition: udferr_usr.h:158
VfatxUpdateProgress
VOID VfatxUpdateProgress(IN PFORMAT_CONTEXT Context, IN ULONG Increment)
Definition: vfatxlib.c:181

Referenced by FatxFormat().

◆ Fatx32WriteFAT()

static NTSTATUS Fatx32WriteFAT ( IN HANDLE  FileHandle,
IN ULONG  SectorOffset,
IN ULONG  FATSectors,
IN OUT PFORMAT_CONTEXT  Context 
)
static

Definition at line 195 of file fatx.c.

199{
200 IO_STATUS_BLOCK IoStatusBlock;
201 NTSTATUS Status;
202 PUCHAR Buffer;
203 LARGE_INTEGER FileOffset;
204 ULONG i;
205 ULONG Sectors;
206
207 /* Allocate buffer */
208 Buffer = (PUCHAR)RtlAllocateHeap(RtlGetProcessHeap(),
209 0,
210 64 * 1024);
211 if (Buffer == NULL)
212 return STATUS_INSUFFICIENT_RESOURCES;
213
214 /* Zero the buffer */
215 memset(Buffer, 0, 64 * 1024);
216
217 /* FAT cluster 0 */
218 Buffer[0] = 0xf8; /* Media type */
219 Buffer[1] = 0xff;
220 Buffer[2] = 0xff;
221 Buffer[3] = 0x0f;
222
223 /* FAT cluster 1 */
224 Buffer[4] = 0xff; /* Clean shutdown, no disk read/write errors, end-of-cluster (EOC) mark */
225 Buffer[5] = 0xff;
226 Buffer[6] = 0xff;
227 Buffer[7] = 0x0f;
228
229 /* Write first sector of the FAT */
230 FileOffset.QuadPart = (SectorOffset * 512) + sizeof(FATX_BOOT_SECTOR);
231 Status = NtWriteFile(FileHandle,
232 NULL,
233 NULL,
234 NULL,
235 &IoStatusBlock,
236 Buffer,
237 512,
238 &FileOffset,
239 NULL);
240 if (!NT_SUCCESS(Status))
241 {
242 DPRINT("NtWriteFile() failed (Status %lx)\n", Status);
243 RtlFreeHeap(RtlGetProcessHeap(), 0, Buffer);
244 return Status;
245 }
246
247 VfatxUpdateProgress(Context, 1);
248
249 /* Zero the begin of the buffer */
250 memset(Buffer, 0, 8);
251
252 /* Zero the rest of the FAT */
253 Sectors = 64 * 1024 / 512;
254 for (i = 1; i < FATSectors; i += Sectors)
255 {
256 /* Zero some sectors of the FAT */
257 FileOffset.QuadPart = (SectorOffset + i) * 512 + sizeof(FATX_BOOT_SECTOR);
258
259 if ((FATSectors - i) <= Sectors)
260 {
261 Sectors = FATSectors - i;
262 }
263
264 Status = NtWriteFile(FileHandle,
265 NULL,
266 NULL,
267 NULL,
268 &IoStatusBlock,
269 Buffer,
270 Sectors * 512,
271 &FileOffset,
272 NULL);
273 if (!NT_SUCCESS(Status))
274 {
275 DPRINT("NtWriteFile() failed (Status %lx)\n", Status);
276 RtlFreeHeap(RtlGetProcessHeap(), 0, Buffer);
277 return Status;
278 }
279
280 VfatxUpdateProgress(Context, Sectors);
281 }
282
283 /* Free the buffer */
284 RtlFreeHeap(RtlGetProcessHeap(), 0, Buffer);
285
286 return Status;
287}

Referenced by FatxFormat().

◆ FatxFormat()

NTSTATUS FatxFormat ( IN HANDLE  FileHandle,
IN PPARTITION_INFORMATION  PartitionInfo,
IN PDISK_GEOMETRY  DiskGeometry,
IN BOOLEAN  QuickFormat,
IN OUT PFORMAT_CONTEXT  Context 
)

Definition at line 343 of file fatx.c.

348{
349 FATX_BOOT_SECTOR BootSector;
350 ULONGLONG SectorCount;
351 ULONG ClusterCount;
352 ULONG RootDirSectors;
353 ULONG FATSectors;
354 NTSTATUS Status;
355
356 SectorCount = PartitionInfo->PartitionLength.QuadPart >> GetShiftCount(512); /* Use shifting to avoid 64-bit division */
357
358 memset(&BootSector, 0, sizeof(FATX_BOOT_SECTOR));
359 memcpy(&BootSector.SysType[0], "FATX", 4);
360 BootSector.SectorsPerCluster = 32;
361 BootSector.FATCount = 1;
362 BootSector.VolumeID = CalcVolumeSerialNumber();
363 RootDirSectors = 256 * 64 / 512;
364
365 /* Calculate number of FAT sectors */
366 ClusterCount = SectorCount >> GetShiftCount(32);
367
368 if (ClusterCount > 65525)
369 {
370 FATSectors = (((ClusterCount * 4) + 4095) & ~4095) >> GetShiftCount(512);
371 }
372 else
373 {
374 FATSectors = (((ClusterCount * 2) + 4095) & ~4095) >> GetShiftCount(512);
375 }
376 DPRINT("FATSectors = %hu\n", FATSectors);
377
378 /* Init context data */
379 if (QuickFormat)
380 {
381 Context->TotalSectorCount =
382 1 + FATSectors + RootDirSectors;
383 }
384 else
385 {
386 Context->TotalSectorCount = SectorCount;
387 }
388
389 Status = FatxWriteBootSector(FileHandle,
390 &BootSector,
391 Context);
392 if (!NT_SUCCESS(Status))
393 {
394 DPRINT("FatxWriteBootSector() failed with status 0x%.08x\n", Status);
395 return Status;
396 }
397
398 /* Write first FAT copy */
399 if (ClusterCount > 65525)
400 {
401 Status = Fatx32WriteFAT(FileHandle,
402 0,
403 FATSectors,
404 Context);
405 }
406 else
407 {
408 Status = Fatx16WriteFAT(FileHandle,
409 0,
410 FATSectors,
411 Context);
412 }
413
414 if (!NT_SUCCESS(Status))
415 {
416 DPRINT("FatxWriteFAT() failed with status 0x%.08x\n", Status);
417 return Status;
418 }
419
420 Status = FatxWriteRootDirectory(FileHandle,
421 FATSectors,
422 Context);
423 if (!NT_SUCCESS(Status))
424 {
425 DPRINT("FatxWriteRootDirectory() failed with status 0x%.08x\n", Status);
426 }
427
428 if (!QuickFormat)
429 {
430 /* FIXME: Fill remaining sectors */
431 }
432
433 return Status;
434}
QuickFormat
BOOL QuickFormat
Definition: format.c:66
memcpy
#define memcpy(s1, s2, n)
Definition: mkisofs.h:878
SectorCount
ULONG SectorCount
Definition: part_xbox.c:31
FatxWriteRootDirectory
static NTSTATUS FatxWriteRootDirectory(IN HANDLE FileHandle, IN ULONG FATSectors, IN OUT PFORMAT_CONTEXT Context)
Definition: fatx.c:290
GetShiftCount
static ULONG GetShiftCount(IN ULONG Value)
Definition: fatx.c:19
Fatx16WriteFAT
static NTSTATUS Fatx16WriteFAT(IN HANDLE FileHandle, IN ULONG SectorOffset, IN ULONG FATSectors, IN OUT PFORMAT_CONTEXT Context)
Definition: fatx.c:105
Fatx32WriteFAT
static NTSTATUS Fatx32WriteFAT(IN HANDLE FileHandle, IN ULONG SectorOffset, IN ULONG FATSectors, IN OUT PFORMAT_CONTEXT Context)
Definition: fatx.c:195
CalcVolumeSerialNumber
static ULONG CalcVolumeSerialNumber(VOID)
Definition: fatx.c:34
FatxWriteBootSector
static NTSTATUS FatxWriteBootSector(IN HANDLE FileHandle, IN PFATX_BOOT_SECTOR BootSector, IN OUT PFORMAT_CONTEXT Context)
Definition: fatx.c:55
BootSector::SectorsPerCluster
BYTE SectorsPerCluster
Definition: fatfs.h:76
ULONGLONG
uint64_t ULONGLONG
Definition: typedefs.h:67
PartitionInfo
_In_ ULONG _In_ struct _SET_PARTITION_INFORMATION_EX * PartitionInfo
Definition: iofuncs.h:2105

Referenced by VfatxFormat().

◆ FatxWriteBootSector()

static NTSTATUS FatxWriteBootSector ( IN HANDLE  FileHandle,
IN PFATX_BOOT_SECTOR  BootSector,
IN OUT PFORMAT_CONTEXT  Context 
)
static

Definition at line 55 of file fatx.c.

58{
59 IO_STATUS_BLOCK IoStatusBlock;
60 NTSTATUS Status;
61 PUCHAR NewBootSector;
62 LARGE_INTEGER FileOffset;
63
64 /* Allocate buffer for new bootsector */
65 NewBootSector = (PUCHAR)RtlAllocateHeap(RtlGetProcessHeap(),
66 0,
67 sizeof(FATX_BOOT_SECTOR));
68 if (NewBootSector == NULL)
69 return STATUS_INSUFFICIENT_RESOURCES;
70
71 /* Zero the new bootsector */
72 memset(NewBootSector, 0, sizeof(FATX_BOOT_SECTOR));
73
74 /* Copy FAT16 BPB to new bootsector */
75 memcpy(NewBootSector, BootSector, 18); /* FAT16 BPB length (up to (not including) Res2) */
76
77 /* Write sector 0 */
78 FileOffset.QuadPart = 0ULL;
79 Status = NtWriteFile(FileHandle,
80 NULL,
81 NULL,
82 NULL,
83 &IoStatusBlock,
84 NewBootSector,
85 sizeof(FATX_BOOT_SECTOR),
86 &FileOffset,
87 NULL);
88 if (!NT_SUCCESS(Status))
89 {
90 DPRINT("NtWriteFile() failed (Status %lx)\n", Status);
91 RtlFreeHeap(RtlGetProcessHeap(), 0, NewBootSector);
92 return Status;
93 }
94
95 VfatxUpdateProgress(Context, 1);
96
97 /* Free the new boot sector */
98 RtlFreeHeap(RtlGetProcessHeap(), 0, NewBootSector);
99
100 return Status;
101}
FATX_BOOT_SECTOR
struct _FATX_BOOT_SECTOR FATX_BOOT_SECTOR
ULL
#define ULL(a, b)
Definition: format_msg.c:27

Referenced by FatxFormat().

◆ FatxWriteRootDirectory()

static NTSTATUS FatxWriteRootDirectory ( IN HANDLE  FileHandle,
IN ULONG  FATSectors,
IN OUT PFORMAT_CONTEXT  Context 
)
static

Definition at line 290 of file fatx.c.

293{
294 IO_STATUS_BLOCK IoStatusBlock;
295 NTSTATUS Status = STATUS_SUCCESS;
296 PUCHAR Buffer;
297 LARGE_INTEGER FileOffset;
298 ULONG FirstRootDirSector;
299 ULONG RootDirSectors;
300
301 /* Write cluster */
302 RootDirSectors = 256 * 64 / 512;
303 FirstRootDirSector = sizeof(FATX_BOOT_SECTOR) / 512 + FATSectors;
304
305 DPRINT("RootDirSectors = %lu\n", RootDirSectors);
306 DPRINT("FirstRootDirSector = %lu\n", FirstRootDirSector);
307
308 /* Allocate buffer for the cluster */
309 Buffer = (PUCHAR)RtlAllocateHeap(RtlGetProcessHeap(),
310 0,
311 RootDirSectors * 512);
312 if (Buffer == NULL)
313 return STATUS_INSUFFICIENT_RESOURCES;
314
315 /* Zero the buffer */
316 memset(Buffer, 0xff, RootDirSectors * 512);
317
318 /* Zero some sectors of the root directory */
319 FileOffset.QuadPart = FirstRootDirSector * 512;
320
321 Status = NtWriteFile(FileHandle,
322 NULL,
323 NULL,
324 NULL,
325 &IoStatusBlock,
326 Buffer,
327 RootDirSectors * 512,
328 &FileOffset,
329 NULL);
330 if (!NT_SUCCESS(Status))
331 {
332 DPRINT("NtWriteFile() failed (Status %lx)\n", Status);
333 }
334
335 /* Free the buffer */
336 RtlFreeHeap(RtlGetProcessHeap(), 0, Buffer);
337
338 return Status;
339}
STATUS_SUCCESS
#define STATUS_SUCCESS
Definition: shellext.h:65

Referenced by FatxFormat().

◆ GetShiftCount()

static ULONG GetShiftCount ( IN ULONG  Value)
static

Definition at line 19 of file fatx.c.

20{
21 ULONG i = 1;
22
23 while (Value > 0)
24 {
25 i++;
26 Value /= 2;
27 }
28
29 return i - 2;
30}
Value
_Must_inspect_result_ _In_ WDFKEY _In_ PCUNICODE_STRING _Out_opt_ PUSHORT _Inout_opt_ PUNICODE_STRING Value
Definition: wdfregistry.h:413

Referenced by FatxFormat().