ReactOS  0.4.15-dev-5131-g311fcc6
registry.c File Reference
#include <freeldr.h>
#include <cmlib.h>
#include "registry.h"
#include <internal/cmboot.h>
#include <debug.h>
Include dependency graph for registry.c:

Go to the source code of this file.

Macros

#define HCI_TO_HKEY(CellIndex)   ((HKEY)(ULONG_PTR)(CellIndex))
 
#define GET_HHIVE(CmHive)   (&((CmHive)->Hive))
 
#define GET_HHIVE_FROM_HKEY(hKey)   GET_HHIVE(CmSystemHive)
 
#define GET_CM_KEY_NODE(hHive, hKey)   ((PCM_KEY_NODE)HvGetCell(hHive, HKEY_TO_HCI(hKey)))
 

Functions

 DBG_DEFAULT_CHANNEL (REGISTRY)
 
PVOID NTAPI CmpAllocate (IN SIZE_T Size, IN BOOLEAN Paged, IN ULONG Tag)
 
VOID NTAPI CmpFree (IN PVOID Ptr, IN ULONG Quota)
 
BOOLEAN RegImportBinaryHive (_In_ PVOID ChunkBase, _In_ ULONG ChunkSize)
 
BOOLEAN RegInitCurrentControlSet (_In_ BOOLEAN LastKnownGood)
 
static BOOLEAN GetNextPathElement (_Out_ PUNICODE_STRING NextElement, _Inout_ PUNICODE_STRING RemainingPath)
 
LONG RegOpenKey (_In_ HKEY ParentKey, _In_z_ PCWSTR KeyName, _Out_ PHKEY Key)
 
static VOID RepGetValueData (_In_ PHHIVE Hive, _In_ PCM_KEY_VALUE ValueCell, _Out_opt_ PULONG Type, _Out_opt_ PUCHAR Data, _Inout_opt_ PULONG DataSize)
 
LONG RegQueryValue (_In_ HKEY Key, _In_z_ PCWSTR ValueName, _Out_opt_ PULONG Type, _Out_opt_ PUCHAR Data, _Inout_opt_ PULONG DataSize)
 

Variables

static PCMHIVE CmSystemHive
 
static HCELL_INDEX SystemRootCell
 
PHHIVE SystemHive = NULL
 
HKEY CurrentControlSetKey = NULL
 

Macro Definition Documentation

◆ GET_CM_KEY_NODE

#define GET_CM_KEY_NODE (   hHive,
  hKey 
)    ((PCM_KEY_NODE)HvGetCell(hHive, HKEY_TO_HCI(hKey)))

Definition at line 42 of file registry.c.

◆ GET_HHIVE

#define GET_HHIVE (   CmHive)    (&((CmHive)->Hive))

Definition at line 40 of file registry.c.

◆ GET_HHIVE_FROM_HKEY

#define GET_HHIVE_FROM_HKEY (   hKey)    GET_HHIVE(CmSystemHive)

Definition at line 41 of file registry.c.

◆ HCI_TO_HKEY

#define HCI_TO_HKEY (   CellIndex)    ((HKEY)(ULONG_PTR)(CellIndex))

Definition at line 35 of file registry.c.

Function Documentation

◆ CmpAllocate()

PVOID NTAPI CmpAllocate ( IN SIZE_T  Size,
IN BOOLEAN  Paged,
IN ULONG  Tag 
)

Definition at line 46 of file registry.c.

50 {
52  return FrLdrHeapAlloc(Size, Tag);
53 }
#define UNREFERENCED_PARAMETER(P)
Definition: ntbasedef.h:317
IN PVOID IN PVOID IN USHORT IN USHORT Size
Definition: pci.h:361
FORCEINLINE PVOID FrLdrHeapAlloc(SIZE_T MemorySize, ULONG Tag)
Definition: mm.h:174
_Must_inspect_result_ _In_ WDFDEVICE _In_ BOOLEAN _In_opt_ PVOID Tag
Definition: wdfdevice.h:4061

Referenced by RegImportBinaryHive().

◆ CmpFree()

VOID NTAPI CmpFree ( IN PVOID  Ptr,
IN ULONG  Quota 
)

Definition at line 57 of file registry.c.

60 {
62  FrLdrHeapFree(Ptr, 0);
63 }
FORCEINLINE VOID FrLdrHeapFree(PVOID MemoryPointer, ULONG Tag)
Definition: mm.h:181
#define UNREFERENCED_PARAMETER(P)
Definition: ntbasedef.h:317
_Must_inspect_result_ _In_ PFSRTL_PER_STREAM_CONTEXT Ptr
Definition: fsrtlfuncs.h:898

Referenced by RegImportBinaryHive().

◆ DBG_DEFAULT_CHANNEL()

DBG_DEFAULT_CHANNEL ( REGISTRY  )

◆ GetNextPathElement()

static BOOLEAN GetNextPathElement ( _Out_ PUNICODE_STRING  NextElement,
_Inout_ PUNICODE_STRING  RemainingPath 
)
static

Definition at line 150 of file registry.c.

153 {
154  /* Check if there are any characters left */
155  if (RemainingPath->Length < sizeof(WCHAR))
156  {
157  /* Nothing left, bail out early */
158  return FALSE;
159  }
160 
161  /* The next path elements starts with the remaining path */
162  NextElement->Buffer = RemainingPath->Buffer;
163 
164  /* Loop until the path element ends */
165  while ((RemainingPath->Length >= sizeof(WCHAR)) &&
166  (RemainingPath->Buffer[0] != '\\'))
167  {
168  /* Skip this character */
169  RemainingPath->Buffer++;
170  RemainingPath->Length -= sizeof(WCHAR);
171  }
172 
173  NextElement->Length = (USHORT)(RemainingPath->Buffer - NextElement->Buffer) * sizeof(WCHAR);
174  NextElement->MaximumLength = NextElement->Length;
175 
176  /* Check if the path element ended with a path separator */
177  if (RemainingPath->Length >= sizeof(WCHAR))
178  {
179  /* Skip the path separator */
180  ASSERT(RemainingPath->Buffer[0] == '\\');
181  RemainingPath->Buffer++;
182  RemainingPath->Length -= sizeof(WCHAR);
183  }
184 
185  /* Return whether we got any characters */
186  return TRUE;
187 }
#define TRUE
Definition: types.h:120
#define FALSE
Definition: types.h:117
#define ASSERT(a)
Definition: mode.c:44
__wchar_t WCHAR
Definition: xmlstorage.h:180
unsigned short USHORT
Definition: pedump.c:61

Referenced by RegOpenKey().

◆ RegImportBinaryHive()

BOOLEAN RegImportBinaryHive ( _In_ PVOID  ChunkBase,
_In_ ULONG  ChunkSize 
)

Definition at line 66 of file registry.c.

69 {
71  PCM_KEY_NODE KeyNode;
72 
73  TRACE("RegImportBinaryHive(%p, 0x%lx)\n", ChunkBase, ChunkSize);
74 
75  /* Allocate and initialize the hive */
76  CmSystemHive = FrLdrTempAlloc(sizeof(CMHIVE), 'eviH');
78  HINIT_FLAT, // HINIT_MEMORY_INPLACE
79  0,
80  0,
81  ChunkBase,
83  CmpFree,
84  NULL,
85  NULL,
86  NULL,
87  NULL,
88  1,
89  NULL);
90  if (!NT_SUCCESS(Status))
91  {
92  ERR("Corrupted hive %p!\n", ChunkBase);
93  FrLdrTempFree(CmSystemHive, 'eviH');
94  return FALSE;
95  }
96 
97  /* Save the root key node */
101 
102  /* Verify it is accessible */
104  ASSERT(KeyNode);
107 
108  return TRUE;
109 }
#define TRUE
Definition: types.h:120
PHBASE_BLOCK BaseBlock
Definition: hivedata.h:303
#define CM_KEY_NODE_SIGNATURE
Definition: cmdata.h:21
VOID NTAPI CmpFree(IN PVOID Ptr, IN ULONG Quota)
Definition: registry.c:57
NTSTATUS CMAPI HvInitialize(PHHIVE RegistryHive, ULONG OperationType, ULONG HiveFlags, ULONG FileType, PVOID HiveData OPTIONAL, PALLOCATE_ROUTINE Allocate, PFREE_ROUTINE Free, PFILE_SET_SIZE_ROUTINE FileSetSize, PFILE_WRITE_ROUTINE FileWrite, PFILE_READ_ROUTINE FileRead, PFILE_FLUSH_ROUTINE FileFlush, ULONG Cluster OPTIONAL, PCUNICODE_STRING FileName OPTIONAL)
Definition: hiveinit.c:522
LONG NTSTATUS
Definition: precomp.h:26
#define HCELL_NIL
Definition: hivedata.h:85
PVOID NTAPI CmpAllocate(IN SIZE_T Size, IN BOOLEAN Paged, IN ULONG Tag)
Definition: registry.c:46
PHHIVE SystemHive
Definition: registry.c:32
static PCMHIVE CmSystemHive
Definition: registry.c:29
#define HvGetCell(Hive, Cell)
Definition: cmlib.h:381
static HCELL_INDEX SystemRootCell
Definition: registry.c:30
#define FALSE
Definition: types.h:117
_Inout_ PUCHAR _In_ PUCHAR _Out_ PUCHAR _Out_ PULONG ChunkSize
Definition: rtlfuncs.h:2274
FORCEINLINE PVOID FrLdrTempAlloc(_In_ SIZE_T Size, _In_ ULONG Tag)
Definition: mm.h:188
struct _CM_KEY_NODE * PCM_KEY_NODE
#define HINIT_FLAT
Definition: hivedata.h:17
Status
Definition: gdiplustypes.h:24
#define TRACE(s)
Definition: solgame.cpp:4
#define ASSERT(a)
Definition: mode.c:44
#define NT_SUCCESS(StatCode)
Definition: apphelp.c:32
USHORT Signature
Definition: cmdata.h:92
#define GET_HHIVE(CmHive)
Definition: registry.c:40
HCELL_INDEX RootCell
Definition: hivedata.h:143
#define ERR(fmt,...)
Definition: debug.h:110
#define HvReleaseCell(Hive, Cell)
Definition: cmlib.h:384
#define NULL
Definition: types.h:112
Definition: cmlib.h:244
FORCEINLINE VOID FrLdrTempFree(PVOID Allocation, ULONG Tag)
Definition: mm.h:197

Referenced by WinLdrInitSystemHive().

◆ RegInitCurrentControlSet()

BOOLEAN RegInitCurrentControlSet ( _In_ BOOLEAN  LastKnownGood)

Definition at line 112 of file registry.c.

114 {
115  UNICODE_STRING ControlSetName;
116  HCELL_INDEX ControlCell;
117  PCM_KEY_NODE KeyNode;
118  BOOLEAN AutoSelect;
119 
120  TRACE("RegInitCurrentControlSet\n");
121 
122  /* Choose which control set to open and set it as the new "Current" */
123  RtlInitUnicodeString(&ControlSetName,
124  LastKnownGood ? L"LastKnownGood"
125  : L"Default");
126 
127  ControlCell = CmpFindControlSet(SystemHive,
129  &ControlSetName,
130  &AutoSelect);
131  if (ControlCell == HCELL_NIL)
132  {
133  ERR("CmpFindControlSet('%wZ') failed\n", &ControlSetName);
134  return FALSE;
135  }
136 
137  CurrentControlSetKey = HCI_TO_HKEY(ControlCell);
138 
139  /* Verify it is accessible */
140  KeyNode = (PCM_KEY_NODE)HvGetCell(SystemHive, ControlCell);
141  ASSERT(KeyNode);
143  HvReleaseCell(SystemHive, ControlCell);
144 
145  return TRUE;
146 }
#define TRUE
Definition: types.h:120
#define CM_KEY_NODE_SIGNATURE
Definition: cmdata.h:21
#define HCELL_NIL
Definition: hivedata.h:85
PHHIVE SystemHive
Definition: registry.c:32
#define HvGetCell(Hive, Cell)
Definition: cmlib.h:381
static HCELL_INDEX SystemRootCell
Definition: registry.c:30
#define L(x)
Definition: ntvdm.h:50
HKEY CurrentControlSetKey
Definition: registry.c:33
#define FALSE
Definition: types.h:117
#define HCI_TO_HKEY(CellIndex)
Definition: registry.c:35
unsigned char BOOLEAN
struct _CM_KEY_NODE * PCM_KEY_NODE
#define TRACE(s)
Definition: solgame.cpp:4
#define ASSERT(a)
Definition: mode.c:44
ULONG HCELL_INDEX
Definition: hivedata.h:80
USHORT Signature
Definition: cmdata.h:92
HCELL_INDEX NTAPI CmpFindControlSet(_In_ PHHIVE SystemHive, _In_ HCELL_INDEX RootCell, _In_ PCUNICODE_STRING SelectKeyName, _Out_ PBOOLEAN AutoSelect)
Finds the corresponding "HKLM\SYSTEM\ControlSetXXX" system control set registry key,...
Definition: cmboot.c:84
#define ERR(fmt,...)
Definition: debug.h:110
#define HvReleaseCell(Hive, Cell)
Definition: cmlib.h:384
NTSYSAPI VOID NTAPI RtlInitUnicodeString(PUNICODE_STRING DestinationString, PCWSTR SourceString)

Referenced by WinLdrInitSystemHive().

◆ RegOpenKey()

LONG RegOpenKey ( _In_ HKEY  ParentKey,
_In_z_ PCWSTR  KeyName,
_Out_ PHKEY  Key 
)

Definition at line 263 of file registry.c.

267 {
268  UNICODE_STRING RemainingPath, SubKeyName;
269  UNICODE_STRING CurrentControlSet = RTL_CONSTANT_STRING(L"CurrentControlSet");
271  PCM_KEY_NODE KeyNode;
272  HCELL_INDEX CellIndex;
273 
274  TRACE("RegOpenKey(%p, '%S', %p)\n", ParentKey, KeyName, Key);
275 
276  /* Initialize the remaining path name */
277  RtlInitUnicodeString(&RemainingPath, KeyName);
278 
279  /* Check if we have a parent key */
280  if (ParentKey == NULL)
281  {
282  UNICODE_STRING SubKeyName1, SubKeyName2, SubKeyName3;
284  UNICODE_STRING MachinePath = RTL_CONSTANT_STRING(L"MACHINE");
285  UNICODE_STRING SystemPath = RTL_CONSTANT_STRING(L"SYSTEM");
286 
287  TRACE("RegOpenKey: absolute path\n");
288 
289  if ((RemainingPath.Length < sizeof(WCHAR)) ||
290  RemainingPath.Buffer[0] != '\\')
291  {
292  /* The key path is not absolute */
293  ERR("RegOpenKey: invalid path '%S' (%wZ)\n", KeyName, &RemainingPath);
294  return ERROR_PATH_NOT_FOUND;
295  }
296 
297  /* Skip initial path separator */
298  RemainingPath.Buffer++;
299  RemainingPath.Length -= sizeof(WCHAR);
300 
301  /* Get the first 3 path elements */
302  GetNextPathElement(&SubKeyName1, &RemainingPath);
303  GetNextPathElement(&SubKeyName2, &RemainingPath);
304  GetNextPathElement(&SubKeyName3, &RemainingPath);
305  TRACE("RegOpenKey: %wZ / %wZ / %wZ\n", &SubKeyName1, &SubKeyName2, &SubKeyName3);
306 
307  /* Check if we have the correct path */
308  if (!RtlEqualUnicodeString(&SubKeyName1, &RegistryPath, TRUE) ||
309  !RtlEqualUnicodeString(&SubKeyName2, &MachinePath, TRUE) ||
310  !RtlEqualUnicodeString(&SubKeyName3, &SystemPath, TRUE))
311  {
312  /* The key path is not inside HKLM\Machine\System */
313  ERR("RegOpenKey: invalid path '%S' (%wZ)\n", KeyName, &RemainingPath);
314  return ERROR_PATH_NOT_FOUND;
315  }
316 
317  /* Use the root key */
318  CellIndex = SystemRootCell;
319  }
320  else
321  {
322  /* Use the parent key */
323  CellIndex = HKEY_TO_HCI(ParentKey);
324  }
325 
326  /* Check if this is the root key */
327  if (CellIndex == SystemRootCell)
328  {
329  UNICODE_STRING TempPath = RemainingPath;
330 
331  /* Get the first path element */
332  GetNextPathElement(&SubKeyName, &TempPath);
333 
334  /* Check if this is CurrentControlSet */
335  if (RtlEqualUnicodeString(&SubKeyName, &CurrentControlSet, TRUE))
336  {
337  /* Use the CurrentControlSetKey and update the remaining path */
338  CellIndex = HKEY_TO_HCI(CurrentControlSetKey);
339  RemainingPath = TempPath;
340  }
341  }
342 
343  /* Get the key node */
344  KeyNode = (PCM_KEY_NODE)HvGetCell(Hive, CellIndex);
345  ASSERT(KeyNode);
347 
348  TRACE("RegOpenKey: RemainingPath '%wZ'\n", &RemainingPath);
349 
350  /* Loop while there are path elements */
351  while (GetNextPathElement(&SubKeyName, &RemainingPath))
352  {
353  HCELL_INDEX NextCellIndex;
354 
355  TRACE("RegOpenKey: next element '%wZ'\n", &SubKeyName);
356 
357  /* Get the next sub key */
358  NextCellIndex = CmpFindSubKeyByName(Hive, KeyNode, &SubKeyName);
359  HvReleaseCell(Hive, CellIndex);
360  CellIndex = NextCellIndex;
361  if (CellIndex == HCELL_NIL)
362  {
363  WARN("Did not find sub key '%wZ' (full: %S)\n", &SubKeyName, KeyName);
364  return ERROR_PATH_NOT_FOUND;
365  }
366 
367  /* Get the found key */
368  KeyNode = (PCM_KEY_NODE)HvGetCell(Hive, CellIndex);
369  ASSERT(KeyNode);
371  }
372 
373  HvReleaseCell(Hive, CellIndex);
374  *Key = HCI_TO_HKEY(CellIndex);
375 
376  return ERROR_SUCCESS;
377 }
#define ERROR_SUCCESS
Definition: deptool.c:10
_Must_inspect_result_ _Out_ PNDIS_STATUS _In_ NDIS_HANDLE _In_ PNDIS_STRING SubKeyName
Definition: ndis.h:4723
#define TRUE
Definition: types.h:120
#define CM_KEY_NODE_SIGNATURE
Definition: cmdata.h:21
#define WARN(fmt,...)
Definition: debug.h:112
_Must_inspect_result_ _In_ PDRIVER_OBJECT _In_ PCUNICODE_STRING RegistryPath
Definition: wdfdriver.h:213
#define HCELL_NIL
Definition: hivedata.h:85
static PCMHIVE CmSystemHive
Definition: registry.c:29
#define HvGetCell(Hive, Cell)
Definition: cmlib.h:381
static HCELL_INDEX SystemRootCell
Definition: registry.c:30
#define L(x)
Definition: ntvdm.h:50
HKEY CurrentControlSetKey
Definition: registry.c:33
#define HCI_TO_HKEY(CellIndex)
Definition: registry.c:35
struct _CM_KEY_NODE * PCM_KEY_NODE
_Must_inspect_result_ _In_ WDFDEVICE _In_ PCUNICODE_STRING KeyName
Definition: wdfdevice.h:2697
#define TRACE(s)
Definition: solgame.cpp:4
#define ASSERT(a)
Definition: mode.c:44
__wchar_t WCHAR
Definition: xmlstorage.h:180
ULONG HCELL_INDEX
Definition: hivedata.h:80
USHORT Signature
Definition: cmdata.h:92
#define GET_HHIVE(CmHive)
Definition: registry.c:40
#define GET_HHIVE_FROM_HKEY(hKey)
Definition: registry.c:41
#define ERR(fmt,...)
Definition: debug.h:110
#define HvReleaseCell(Hive, Cell)
Definition: cmlib.h:384
_Must_inspect_result_ _In_opt_ WDFKEY ParentKey
Definition: wdfregistry.h:69
#define NULL
Definition: types.h:112
NTSYSAPI VOID NTAPI RtlInitUnicodeString(PUNICODE_STRING DestinationString, PCWSTR SourceString)
#define ERROR_PATH_NOT_FOUND
Definition: winerror.h:106
HCELL_INDEX NTAPI CmpFindSubKeyByName(IN PHHIVE Hive, IN PCM_KEY_NODE Parent, IN PCUNICODE_STRING SearchName)
Definition: cmindex.c:683
NTSYSAPI BOOLEAN NTAPI RtlEqualUnicodeString(PUNICODE_STRING String1, PUNICODE_STRING String2, BOOLEAN CaseInSensitive)
#define HKEY_TO_HCI(hKey)
Definition: registry.h:28
static BOOLEAN GetNextPathElement(_Out_ PUNICODE_STRING NextElement, _Inout_ PUNICODE_STRING RemainingPath)
Definition: registry.c:150
#define RTL_CONSTANT_STRING(s)
Definition: tunneltest.c:14

◆ RegQueryValue()

LONG RegQueryValue ( _In_ HKEY  Key,
_In_z_ PCWSTR  ValueName,
_Out_opt_ PULONG  Type,
_Out_opt_ PUCHAR  Data,
_Inout_opt_ PULONG  DataSize 
)

Definition at line 418 of file registry.c.

424 {
426  PCM_KEY_NODE KeyNode;
427  PCM_KEY_VALUE ValueCell;
428  HCELL_INDEX CellIndex;
429  UNICODE_STRING ValueNameString;
430 
431  TRACE("RegQueryValue(%p, '%S', %p, %p, %p)\n",
433 
434  /* Get the key node */
435  KeyNode = GET_CM_KEY_NODE(Hive, Key);
436  ASSERT(KeyNode);
438 
439  /* Initialize value name string */
440  RtlInitUnicodeString(&ValueNameString, ValueName);
441  CellIndex = CmpFindValueByName(Hive, KeyNode, &ValueNameString);
442  if (CellIndex == HCELL_NIL)
443  {
444  TRACE("RegQueryValue value not found in key (%.*s)\n",
445  KeyNode->NameLength, KeyNode->Name);
446  HvReleaseCell(Hive, HKEY_TO_HCI(Key));
447  return ERROR_FILE_NOT_FOUND;
448  }
449  HvReleaseCell(Hive, HKEY_TO_HCI(Key));
450 
451  /* Get the value cell */
452  ValueCell = (PCM_KEY_VALUE)HvGetCell(Hive, CellIndex);
453  ASSERT(ValueCell != NULL);
454 
455  RepGetValueData(Hive, ValueCell, Type, Data, DataSize);
456 
457  HvReleaseCell(Hive, CellIndex);
458 
459  return ERROR_SUCCESS;
460 }
WCHAR Name[ANYSIZE_ARRAY]
Definition: cmdata.h:116
#define ERROR_SUCCESS
Definition: deptool.c:10
#define CM_KEY_NODE_SIGNATURE
Definition: cmdata.h:21
#define HCELL_NIL
Definition: hivedata.h:85
USHORT NameLength
Definition: cmdata.h:114
#define HvGetCell(Hive, Cell)
Definition: cmlib.h:381
#define ERROR_FILE_NOT_FOUND
Definition: disk.h:79
#define TRACE(s)
Definition: solgame.cpp:4
#define ASSERT(a)
Definition: mode.c:44
ULONG HCELL_INDEX
Definition: hivedata.h:80
USHORT Signature
Definition: cmdata.h:92
Type
Definition: Type.h:6
#define GET_CM_KEY_NODE(hHive, hKey)
Definition: registry.c:42
static VOID RepGetValueData(_In_ PHHIVE Hive, _In_ PCM_KEY_VALUE ValueCell, _Out_opt_ PULONG Type, _Out_opt_ PUCHAR Data, _Inout_opt_ PULONG DataSize)
Definition: registry.c:381
_Must_inspect_result_ _In_ WDFKEY _In_ PCUNICODE_STRING ValueName
Definition: wdfregistry.h:240
#define GET_HHIVE_FROM_HKEY(hKey)
Definition: registry.c:41
#define HvReleaseCell(Hive, Cell)
Definition: cmlib.h:384
HCELL_INDEX NTAPI CmpFindValueByName(IN PHHIVE Hive, IN PCM_KEY_NODE KeyNode, IN PCUNICODE_STRING Name)
Definition: cmvalue.c:99
struct _CM_KEY_VALUE * PCM_KEY_VALUE
#define NULL
Definition: types.h:112
NTSYSAPI VOID NTAPI RtlInitUnicodeString(PUNICODE_STRING DestinationString, PCWSTR SourceString)
_In_ NDIS_STATUS _In_ ULONG _In_ USHORT _In_opt_ PVOID _In_ ULONG DataSize
Definition: ndis.h:4751
#define HKEY_TO_HCI(hKey)
Definition: registry.h:28

Referenced by RegReadDWORD().

◆ RepGetValueData()

static VOID RepGetValueData ( _In_ PHHIVE  Hive,
_In_ PCM_KEY_VALUE  ValueCell,
_Out_opt_ PULONG  Type,
_Out_opt_ PUCHAR  Data,
_Inout_opt_ PULONG  DataSize 
)
static

Definition at line 381 of file registry.c.

387 {
389  PVOID DataCell;
390 
391  /* Does the caller want the type? */
392  if (Type != NULL)
393  *Type = ValueCell->Type;
394 
395  /* Does the caller provide DataSize? */
396  if (DataSize != NULL)
397  {
398  // NOTE: CmpValueToData doesn't support big data (the function will
399  // bugcheck if so), FreeLdr is not supposed to read such data.
400  // If big data is needed, use instead CmpGetValueData.
401  // CmpGetValueData(Hive, ValueCell, DataSize, &DataCell, ...);
402  DataCell = CmpValueToData(Hive, ValueCell, &DataLength);
403 
404  /* Does the caller want the data? */
405  if ((Data != NULL) && (*DataSize != 0))
406  {
408  DataCell,
409  min(*DataSize, DataLength));
410  }
411 
412  /* Return the actual data length */
413  *DataSize = DataLength;
414  }
415 }
_In_ ULONG _In_opt_ WDFREQUEST _In_opt_ PVOID _In_ size_t _In_ PVOID _In_ size_t _Out_ size_t * DataLength
Definition: cdrom.h:1437
PCELL_DATA NTAPI CmpValueToData(IN PHHIVE Hive, IN PCM_KEY_VALUE Value, OUT PULONG Length)
Definition: cmvalue.c:167
Type
Definition: Type.h:6
#define min(a, b)
Definition: monoChain.cc:55
#define NULL
Definition: types.h:112
unsigned int ULONG
Definition: retypes.h:1
#define RtlCopyMemory(Destination, Source, Length)
Definition: typedefs.h:263
_In_ NDIS_STATUS _In_ ULONG _In_ USHORT _In_opt_ PVOID _In_ ULONG DataSize
Definition: ndis.h:4751

Referenced by RegQueryValue().

Variable Documentation

◆ CmSystemHive

PCMHIVE CmSystemHive
static

Definition at line 29 of file registry.c.

Referenced by RegImportBinaryHive(), and RegOpenKey().

◆ CurrentControlSetKey

◆ SystemHive

◆ SystemRootCell

HCELL_INDEX SystemRootCell
static

Definition at line 30 of file registry.c.

Referenced by RegImportBinaryHive(), RegInitCurrentControlSet(), and RegOpenKey().