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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [win-pv-devel] [PATCH] Added a function called from DriverEntry where we can safely read registry keys and convert strings at PASSIVE_LEVEL
The MSDN documentation for various registry key access and string
conversion functions requires the caller to be at
IRQL = PASSIVE_LEVEL. One of the reasons for this is that the string
conversion tables used by functions such as
RtlAnsiStringToUnicodeString are stored in paged pool memory. Both the
page fault handler and the process scheduler
run at IRQL = DISPATCH_LEVEL, therefore you must not touch memory at
DISPATCH_LEVEL that could be paged out. A process
running at DISPATCH_LEVEL cannot be preempted for the page fault handler
to run.
To aid Static Driver Verifier code analysis and inform developers, I have
added SAL annotations that indicate
IRQL = PASSIVE_LEVEL is required on certain registry access functions.
Signed-off-by: Eric Mackay <mackayem@xxxxxxxxxx>
---
src/xenvbd/driver.c | 86 +++++++++++++++++++++++++
src/xenvbd/driver.h | 45 ++++++++++++++
src/xenvbd/frontend.c | 169 ++++++++++++++++++++++++++++++++++----------------
src/xenvbd/registry.c | 26 ++++++++
src/xenvbd/registry.h | 25 +++++++-
5 files changed, 296 insertions(+), 55 deletions(-)
diff --git a/src/xenvbd/driver.c b/src/xenvbd/driver.c
index bb1954f..0c9275b 100644
--- a/src/xenvbd/driver.c
+++ b/src/xenvbd/driver.c
@@ -58,6 +58,8 @@ XENVBD_PARAMETERS DriverParameters;
#define XENVBD_POOL_TAG 'dbvX'
+XENVBD_REGISTRY_OVERRIDE DriverFeatureOverrides[NumberOfFeatures] = { 0 };
+
static DECLSPEC_NOINLINE VOID
__DriverParseOption(
IN const CHAR *Key,
@@ -301,6 +303,88 @@ DriverFormatFree(
__FreePoolWithTag(Buffer, XENVBD_POOL_TAG);
}
+__drv_requiresIRQL(PASSIVE_LEVEL)
+VOID
+DriverInitializeOverrides(
+ )
+{
+ ULONG Value;
+ NTSTATUS Status;
+ PCHAR FeatureName;
+ XENVBD_FEATURE Feature;
+
+ struct INIT_OVERRIDES {
+ PCHAR Name;
+ XENVBD_FEATURE Feature;
+ } Init[] = {
+ { "removable" , FeatureRemovable },
+ { "feature-persistent", FeaturePersistent },
+ { "feature-max-indirect-segments", FeatureMaxIndirectSegments },
+ { "feature-barrier", FeatureBarrier },
+ { "feature-flush-cache", FeatureFlushCache },
+ { "feature-discard", FeatureDiscard },
+ { "discard-enable", FeatureDiscardEnable },
+ { "discard-secure", FeatureDiscardSecure },
+ { "discard-alignment", FeatureDiscardAlignment },
+ { "discard-granularity", FeatureDiscardGranularity }
+ };
+
+ for (ULONG Index = 0; Index < ARRAYSIZE(Init); Index++) {
+ Feature = Init[Index].Feature;
+ FeatureName = Init[Index].Name;
+ DriverFeatureOverrides[(ULONG)Feature].Name = FeatureName;
+ DriverFeatureOverrides[(ULONG)Feature].Value = 0;
+ DriverFeatureOverrides[(ULONG)Feature].Found = FALSE;
+
+ Status = RegistryQueryDwordValue(DriverGetParametersKey(),
+ FeatureName,
+ &Value);
+
+ if (NT_SUCCESS(Status)) {
+ DriverFeatureOverrides[(ULONG)Feature].Found = TRUE;
+ DriverFeatureOverrides[(ULONG)Feature].Value = Value;
+ }
+ }
+}
+
+// Return value indicates whether reg key was found and stored in
DriverFeatureOverrides
+// Will set Value to the corresponding reg value if found, otherwise it will
leave Value untouched
+__checkReturn
+_Success_(return)
+BOOLEAN
+DriverGetRegOverride(
+ __in XENVBD_FEATURE Feature,
+ __out PULONG Value
+ )
+{
+ BOOLEAN Found = FALSE;
+
+ if ((ULONG)Feature < (ULONG)NumberOfFeatures) {
+ Found = DriverFeatureOverrides[(ULONG)Feature].Found;
+ *Value = DriverFeatureOverrides[(ULONG)Feature].Value;
+ }
+
+ return Found;
+}
+
+// Return value indicates whether a feature enum to string mapping was found
+// FeatureString will be set to point to the string if a mapping is found,
otherwise
+// is not modified
+__checkReturn
+PCHAR
+DriverGetFeatureName(
+ __in XENVBD_FEATURE Feature
+ )
+{
+ PCHAR Name = NULL;
+
+ if ((ULONG)Feature < (ULONG)NumberOfFeatures) {
+ Name = DriverFeatureOverrides[(ULONG)Feature].Name;
+ }
+
+ return Name;
+}
+
HW_INITIALIZE HwInitialize;
BOOLEAN
@@ -549,6 +633,8 @@ DriverEntry(
RtlZeroMemory(&InitData, sizeof(InitData));
+ DriverInitializeOverrides();
+
InitData.HwInitializationDataSize = sizeof(InitData);
InitData.AdapterInterfaceType = Internal;
InitData.HwInitialize = HwInitialize;
diff --git a/src/xenvbd/driver.h b/src/xenvbd/driver.h
index e7730a9..9bf0034 100644
--- a/src/xenvbd/driver.h
+++ b/src/xenvbd/driver.h
@@ -50,6 +50,51 @@
#define XENVBD_MIN_GRANT_REFS (XENVBD_MAX_SEGMENTS_PER_SRB)
+// Registry overrides for driver features
+typedef enum _XENVBD_FEATURE {
+ FeatureRemovable = 0,
+ FeaturePersistent,
+ FeatureMaxIndirectSegments,
+ FeatureBarrier,
+ FeatureFlushCache,
+ FeatureDiscard,
+ FeatureDiscardEnable,
+ FeatureDiscardSecure,
+ FeatureDiscardAlignment,
+ FeatureDiscardGranularity,
+
+ // Add any new features before this enum
+ NumberOfFeatures
+} XENVBD_FEATURE, *PXENVBD_FEATURE;
+
+// Feature Overrides From Registry Values
+typedef struct _XENVBD_REGISTRY_OVERRIDE {
+ PCHAR Name;
+ ULONG Value;
+ BOOLEAN Found;
+} XENVBD_REGISTRY_OVERRIDE, *PXENVBD_REGISTRY_OVERRIDE;
+
+extern XENVBD_REGISTRY_OVERRIDE DriverFeatureOverrides[NumberOfFeatures];
+
+// Return value indicates whether reg key was found and stored in
DriverFeatureOverrides
+// Will set Value to the corresponding reg value if found, otherwise it will
leave Value untouched
+__checkReturn
+_Success_(return)
+extern BOOLEAN
+DriverGetRegOverride(
+ __in XENVBD_FEATURE Name,
+ __out PULONG Value
+ );
+
+// Return value indicates whether a feature enum to string mapping was found
+// FeatureString will be set to point to the string if a mapping is found,
otherwise
+// is not modified
+__checkReturn
+extern PCHAR
+DriverGetFeatureName(
+ __in XENVBD_FEATURE Feature
+ );
+
typedef struct _XENVBD_PARAMETERS {
BOOLEAN SynthesizeInquiry;
BOOLEAN PVCDRom;
diff --git a/src/xenvbd/frontend.c b/src/xenvbd/frontend.c
index 227b93b..aa8ed62 100644
--- a/src/xenvbd/frontend.c
+++ b/src/xenvbd/frontend.c
@@ -619,37 +619,69 @@ abort:
static FORCEINLINE BOOLEAN
FrontendReadFeature(
IN PXENVBD_FRONTEND Frontend,
- IN PCHAR Name,
+ IN XENVBD_FEATURE Feature,
IN PBOOLEAN Value
- )
+)
{
NTSTATUS status;
PCHAR Buffer;
ULONG Override;
BOOLEAN Old = *Value;
+ PCHAR Name;
+
+ Name = DriverGetFeatureName(Feature);
+ if (Name == NULL) {
+ Trace("Target[%d] : Could not find Feature %u.\n", Frontend->TargetId,
Feature);
+ return FALSE;
+ }
+
+ // check registry for disable-override
+ if (DriverGetRegOverride(Feature, &Override)) {
+ *Value = (Override == 0) ? FALSE : TRUE;
+ } else {
+
+ status = XENBUS_STORE(Read,
+ Frontend->Store,
+ NULL,
+ Frontend->BackendPath,
+ Name,
+ &Buffer);
+ if (!NT_SUCCESS(status))
+ return FALSE; // no value, unchanged
+
+ *Value = !!(strtoul(Buffer, NULL, 10));
+ XENBUS_STORE(Free,
+ Frontend->Store,
+ Buffer);
+ }
+
+ return Old != *Value;
+}
+
+static FORCEINLINE BOOLEAN
+FrontendReadDiskFeature(
+ IN PXENVBD_FRONTEND Frontend,
+ IN PCHAR Name,
+ IN PBOOLEAN Value
+)
+{
+ NTSTATUS status;
+ PCHAR Buffer;
+ BOOLEAN Old = *Value;
status = XENBUS_STORE(Read,
- Frontend->Store,
- NULL,
- Frontend->BackendPath,
- Name,
- &Buffer);
+ Frontend->Store,
+ NULL,
+ Frontend->BackendPath,
+ Name,
+ &Buffer);
if (!NT_SUCCESS(status))
return FALSE; // no value, unchanged
*Value = !!(strtoul(Buffer, NULL, 10));
XENBUS_STORE(Free,
- Frontend->Store,
- Buffer);
-
- // check registry for disable-override
- status = RegistryQueryDwordValue(DriverGetParametersKey(),
- Name,
- &Override);
- if (NT_SUCCESS(status)) {
- if (Override == 0)
- *Value = FALSE;
- }
+ Frontend->Store,
+ Buffer);
return Old != *Value;
}
@@ -657,39 +689,69 @@ FrontendReadFeature(
static FORCEINLINE BOOLEAN
FrontendReadValue32(
IN PXENVBD_FRONTEND Frontend,
- IN PCHAR Name,
+ IN XENVBD_FEATURE Feature,
IN BOOLEAN AllowOverride,
IN PULONG Value
- )
+)
{
NTSTATUS status;
PCHAR Buffer;
ULONG Override;
ULONG Old = *Value;
+ PSTR Name;
+
+ Name = DriverGetFeatureName(Feature);
+ if (Name == NULL) {
+ Trace("Target[%d] : Could not find Feature %u.\n", Frontend->TargetId,
Feature);
+ return FALSE;
+ }
+
+ // check registry for disable-override
+ if (AllowOverride && DriverGetRegOverride(Feature, &Override)) {
+ *Value = Override;
+ } else {
+ status = XENBUS_STORE(Read,
+ Frontend->Store,
+ NULL,
+ Frontend->BackendPath,
+ Name,
+ &Buffer);
+ if (!NT_SUCCESS(status))
+ return FALSE; // no value, unchanged
+
+ *Value = strtoul(Buffer, NULL, 10);
+ XENBUS_STORE(Free,
+ Frontend->Store,
+ Buffer);
+ }
+
+ return Old != *Value;
+}
+
+static FORCEINLINE BOOLEAN
+FrontendReadDiskValue32(
+ IN PXENVBD_FRONTEND Frontend,
+ IN PCHAR Name,
+ IN PULONG Value
+)
+{
+ NTSTATUS status;
+ PCHAR Buffer;
+ ULONG Old = *Value;
status = XENBUS_STORE(Read,
- Frontend->Store,
- NULL,
- Frontend->BackendPath,
- Name,
- &Buffer);
+ Frontend->Store,
+ NULL,
+ Frontend->BackendPath,
+ Name,
+ &Buffer);
if (!NT_SUCCESS(status))
return FALSE; // no value, unchanged
*Value = strtoul(Buffer, NULL, 10);
XENBUS_STORE(Free,
- Frontend->Store,
- Buffer);
-
- // check registry for disable-override
- if (AllowOverride) {
- status = RegistryQueryDwordValue(DriverGetParametersKey(),
- Name,
- &Override);
- if (NT_SUCCESS(status)) {
- *Value = Override;
- }
- }
+ Frontend->Store,
+ Buffer);
return Old != *Value;
}
@@ -751,17 +813,14 @@ __ReadDiskInfo(
{
BOOLEAN Changed = FALSE;
- Changed |= FrontendReadValue32(Frontend,
+ Changed |= FrontendReadDiskValue32(Frontend,
"info",
- FALSE,
&Frontend->DiskInfo.DiskInfo);
- Changed |= FrontendReadValue32(Frontend,
+ Changed |= FrontendReadDiskValue32(Frontend,
"sector-size",
- FALSE,
&Frontend->DiskInfo.SectorSize);
- Changed |= FrontendReadValue32(Frontend,
+ Changed |= FrontendReadDiskValue32(Frontend,
"physical-sector-size",
- FALSE,
&Frontend->DiskInfo.PhysSectorSize);
Changed |= FrontendReadValue64(Frontend,
"sectors",
@@ -805,14 +864,14 @@ FrontendReadFeatures(
BOOLEAN Changed = FALSE;
Changed |= FrontendReadFeature(Frontend,
- "removable",
+ FeatureRemovable,
&Frontend->Caps.Removable);
Changed |= FrontendReadValue32(Frontend,
- "feature-max-indirect-segments",
+ FeatureMaxIndirectSegments,
TRUE,
&Frontend->Features.Indirect);
Changed |= FrontendReadFeature(Frontend,
- "feature-persistent",
+ FeaturePersistent,
&Frontend->Features.Persistent);
if (!Changed)
@@ -841,31 +900,31 @@ FrontendReadDiskInfo(
BOOLEAN DiscardEnable = TRUE;
Changed |= FrontendReadFeature(Frontend,
- "feature-barrier",
+ FeatureBarrier,
&Frontend->DiskInfo.Barrier);
Changed |= FrontendReadFeature(Frontend,
- "feature-flush-cache",
+ FeatureFlushCache,
&Frontend->DiskInfo.FlushCache);
// discard related
FrontendReadFeature(Frontend,
- "feature-discard",
+ FeatureDiscard,
&DiscardFeature);
FrontendReadFeature(Frontend,
- "discard-enable",
+ FeatureDiscardEnable,
&DiscardEnable);
Discard = DiscardFeature && DiscardEnable;
Changed |= (Discard != Frontend->DiskInfo.Discard);
Frontend->DiskInfo.Discard = Discard;
Changed |= FrontendReadFeature(Frontend,
- "discard-secure",
+ FeatureDiscardSecure,
&Frontend->DiskInfo.DiscardSecure);
Changed |= FrontendReadValue32(Frontend,
- "discard-alignment",
+ FeatureDiscardAlignment,
TRUE,
&Frontend->DiskInfo.DiscardAlignment);
Changed |= FrontendReadValue32(Frontend,
- "discard-granularity",
+ FeatureDiscardGranularity,
TRUE,
&Frontend->DiskInfo.DiscardGranularity);
@@ -1238,6 +1297,8 @@ FrontendDisable(
//=============================================================================
// Init/Term
+_IRQL_requires_(DISPATCH_LEVEL)
+_Requires_lock_held_(Frontend->StateLock)
static DECLSPEC_NOINLINE NTSTATUS
__FrontendSetState(
__in PXENVBD_FRONTEND Frontend,
@@ -1413,6 +1474,7 @@ FrontendSuspendLateCallback(
PdoPreResume(Frontend->Pdo);
// dont acquire state lock - called at DISPATCH on 1 vCPU with interrupts
enabled
+#pragma warning(suppress: 26110) // warning C26110: Caller failing to hold
lock <lock> before calling function <func>.
Status = __FrontendSetState(Frontend, XENVBD_CLOSED);
if (!NT_SUCCESS(Status)) {
Error("Target[%d] : SetState CLOSED (%08x)\n", Frontend->TargetId,
Status);
@@ -1420,6 +1482,7 @@ FrontendSuspendLateCallback(
}
// dont acquire state lock - called at DISPATCH on 1 vCPU with interrupts
enabled
+#pragma warning(suppress: 26110) // warning C26110: Caller failing to hold
lock <lock> before calling function <func>.
Status = __FrontendSetState(Frontend, State);
if (!NT_SUCCESS(Status)) {
Error("Target[%d] : SetState %s (%08x)\n", Frontend->TargetId,
__XenvbdStateName(State), Status);
diff --git a/src/xenvbd/registry.c b/src/xenvbd/registry.c
index 9ceffa5..885ab6d 100644
--- a/src/xenvbd/registry.c
+++ b/src/xenvbd/registry.c
@@ -89,6 +89,7 @@ RegistryTeardown(
RegistryPath.MaximumLength = RegistryPath.Length = 0;
}
+__drv_requiresIRQL(PASSIVE_LEVEL)
NTSTATUS
RegistryOpenKey(
IN HANDLE Parent,
@@ -118,6 +119,7 @@ fail1:
return status;
}
+__drv_requiresIRQL(PASSIVE_LEVEL)
static NTSTATUS
RegistryOpenRoot(
IN PWCHAR Path,
@@ -151,6 +153,7 @@ fail1:
return status;
}
+__drv_requiresIRQL(PASSIVE_LEVEL)
NTSTATUS
RegistryCreateKey(
IN HANDLE Root,
@@ -250,6 +253,7 @@ fail1:
return status;
}
+__drv_requiresIRQL(PASSIVE_LEVEL)
NTSTATUS
RegistryOpenServiceKey(
IN ACCESS_MASK DesiredAccess,
@@ -259,6 +263,7 @@ RegistryOpenServiceKey(
return RegistryOpenKey(NULL, &RegistryPath, DesiredAccess, Key);
}
+__drv_requiresIRQL(PASSIVE_LEVEL)
NTSTATUS
RegistryCreateServiceKey(
OUT PHANDLE Key
@@ -267,6 +272,7 @@ RegistryCreateServiceKey(
return RegistryCreateKey(NULL, &RegistryPath, REG_OPTION_NON_VOLATILE,
Key);
}
+__drv_requiresIRQL(PASSIVE_LEVEL)
NTSTATUS
RegistryOpenSoftwareKey(
IN PDEVICE_OBJECT DeviceObject,
@@ -289,6 +295,7 @@ fail1:
return status;
}
+__drv_requiresIRQL(PASSIVE_LEVEL)
NTSTATUS
RegistryOpenHardwareKey(
IN PDEVICE_OBJECT DeviceObject,
@@ -366,6 +373,7 @@ fail1:
return status;
}
+__drv_requiresIRQL(PASSIVE_LEVEL)
NTSTATUS
RegistryOpenSubKey(
IN PHANDLE Key,
@@ -399,6 +407,7 @@ fail1:
return status;
}
+__drv_requiresIRQL(PASSIVE_LEVEL)
NTSTATUS
RegistryCreateSubKey(
IN PHANDLE Key,
@@ -432,6 +441,7 @@ fail1:
return status;
}
+__drv_requiresIRQL(PASSIVE_LEVEL)
NTSTATUS
RegistryDeleteSubKey(
IN PHANDLE Key,
@@ -475,6 +485,7 @@ fail1:
return status;
}
+__drv_requiresIRQL(PASSIVE_LEVEL)
NTSTATUS
RegistryEnumerateSubKeys(
IN HANDLE Key,
@@ -579,6 +590,7 @@ fail1:
return status;
}
+__drv_requiresIRQL(PASSIVE_LEVEL)
NTSTATUS
RegistryEnumerateValues(
IN HANDLE Key,
@@ -677,6 +689,7 @@ fail1:
return status;
}
+__drv_requiresIRQL(PASSIVE_LEVEL)
NTSTATUS
RegistryDeleteValue(
IN PHANDLE Key,
@@ -710,6 +723,7 @@ fail1:
return status;
}
+__drv_requiresIRQL(PASSIVE_LEVEL)
NTSTATUS
RegistryQueryDwordValue(
IN HANDLE Key,
@@ -780,6 +794,7 @@ fail1:
return status;
}
+__drv_requiresIRQL(PASSIVE_LEVEL)
NTSTATUS
RegistryUpdateDwordValue(
IN HANDLE Key,
@@ -838,6 +853,7 @@ fail1:
return status;
}
+__drv_requiresIRQL(PASSIVE_LEVEL)
static PANSI_STRING
RegistrySzToAnsi(
IN PWCHAR Buffer
@@ -877,6 +893,7 @@ fail1:
return NULL;
}
+__drv_requiresIRQL(PASSIVE_LEVEL)
static PANSI_STRING
RegistryMultiSzToAnsi(
IN PWCHAR Buffer
@@ -939,6 +956,7 @@ fail1:
return NULL;
}
+__drv_requiresIRQL(PASSIVE_LEVEL)
NTSTATUS
RegistryQuerySzValue(
IN HANDLE Key,
@@ -1026,6 +1044,7 @@ fail1:
return status;
}
+__drv_requiresIRQL(PASSIVE_LEVEL)
NTSTATUS
RegistryQueryBinaryValue(
IN HANDLE Key,
@@ -1111,6 +1130,7 @@ fail1:
return status;
}
+__drv_requiresIRQL(PASSIVE_LEVEL)
NTSTATUS
RegistryUpdateBinaryValue(
IN HANDLE Key,
@@ -1170,6 +1190,7 @@ fail1:
return status;
}
+__drv_requiresIRQL(PASSIVE_LEVEL)
NTSTATUS
RegistryQueryKeyName(
IN HANDLE Key,
@@ -1225,6 +1246,7 @@ fail1:
return status;
}
+__drv_requiresIRQL(PASSIVE_LEVEL)
NTSTATUS
RegistryQuerySystemStartOption(
IN const CHAR *Prefix,
@@ -1303,6 +1325,7 @@ fail1:
return status;
}
+__drv_requiresIRQL(PASSIVE_LEVEL)
static PKEY_VALUE_PARTIAL_INFORMATION
RegistryAnsiToSz(
PANSI_STRING Ansi
@@ -1342,6 +1365,7 @@ fail1:
return NULL;
}
+__drv_requiresIRQL(PASSIVE_LEVEL)
static PKEY_VALUE_PARTIAL_INFORMATION
RegistryAnsiToMultiSz(
PANSI_STRING Ansi
@@ -1395,6 +1419,7 @@ fail1:
return NULL;
}
+__drv_requiresIRQL(PASSIVE_LEVEL)
NTSTATUS
RegistryUpdateSzValue(
IN HANDLE Key,
@@ -1485,6 +1510,7 @@ RegistryFreeBinaryValue(
__RegistryFree(Buffer);
}
+__drv_requiresIRQL(PASSIVE_LEVEL)
VOID
RegistryCloseKey(
IN HANDLE Key
diff --git a/src/xenvbd/registry.h b/src/xenvbd/registry.h
index d39f016..9bf492e 100644
--- a/src/xenvbd/registry.h
+++ b/src/xenvbd/registry.h
@@ -44,6 +44,7 @@ RegistryTeardown(
VOID
);
+__drv_requiresIRQL(PASSIVE_LEVEL)
extern NTSTATUS
RegistryOpenKey(
IN HANDLE Parent,
@@ -52,6 +53,7 @@ RegistryOpenKey(
OUT PHANDLE Key
);
+__drv_requiresIRQL(PASSIVE_LEVEL)
extern NTSTATUS
RegistryCreateKey(
IN HANDLE Parent,
@@ -60,17 +62,20 @@ RegistryCreateKey(
OUT PHANDLE Key
);
+__drv_requiresIRQL(PASSIVE_LEVEL)
extern NTSTATUS
RegistryOpenServiceKey(
IN ACCESS_MASK DesiredAccess,
OUT PHANDLE Key
);
+__drv_requiresIRQL(PASSIVE_LEVEL)
extern NTSTATUS
RegistryCreateServiceKey(
OUT PHANDLE Key
);
+__drv_requiresIRQL(PASSIVE_LEVEL)
extern NTSTATUS
RegistryOpenSoftwareKey(
IN PDEVICE_OBJECT DeviceObject,
@@ -78,6 +83,7 @@ RegistryOpenSoftwareKey(
OUT PHANDLE Key
);
+__drv_requiresIRQL(PASSIVE_LEVEL)
extern NTSTATUS
RegistryOpenHardwareKey(
IN PDEVICE_OBJECT DeviceObject,
@@ -85,6 +91,7 @@ RegistryOpenHardwareKey(
OUT PHANDLE Key
);
+__drv_requiresIRQL(PASSIVE_LEVEL)
extern NTSTATUS
RegistryOpenSubKey(
IN HANDLE Key,
@@ -93,6 +100,7 @@ RegistryOpenSubKey(
OUT PHANDLE SubKey
);
+__drv_requiresIRQL(PASSIVE_LEVEL)
extern NTSTATUS
RegistryCreateSubKey(
IN HANDLE Key,
@@ -101,12 +109,14 @@ RegistryCreateSubKey(
OUT PHANDLE SubKey
);
+__drv_requiresIRQL(PASSIVE_LEVEL)
extern NTSTATUS
RegistryDeleteSubKey(
IN HANDLE Key,
IN PCHAR Name
);
+__drv_requiresIRQL(PASSIVE_LEVEL)
extern NTSTATUS
RegistryEnumerateSubKeys(
IN HANDLE Key,
@@ -114,6 +124,7 @@ RegistryEnumerateSubKeys(
IN PVOID Context
);
+__drv_requiresIRQL(PASSIVE_LEVEL)
extern NTSTATUS
RegistryEnumerateValues(
IN HANDLE Key,
@@ -121,26 +132,30 @@ RegistryEnumerateValues(
IN PVOID Context
);
+__drv_requiresIRQL(PASSIVE_LEVEL)
extern NTSTATUS
RegistryDeleteValue(
IN HANDLE Key,
IN PCHAR Name
);
+__drv_requiresIRQL(PASSIVE_LEVEL)
extern NTSTATUS
RegistryQueryDwordValue(
IN HANDLE Key,
IN PCHAR Name,
OUT PULONG Value
);
-
+
+__drv_requiresIRQL(PASSIVE_LEVEL)
extern NTSTATUS
RegistryUpdateDwordValue(
IN HANDLE Key,
IN PCHAR Name,
IN ULONG Value
);
-
+
+__drv_requiresIRQL(PASSIVE_LEVEL)
extern NTSTATUS
RegistryQuerySzValue(
IN HANDLE Key,
@@ -149,6 +164,7 @@ RegistryQuerySzValue(
OUT PANSI_STRING *Array
);
+__drv_requiresIRQL(PASSIVE_LEVEL)
extern NTSTATUS
RegistryQueryBinaryValue(
IN HANDLE Key,
@@ -157,6 +173,7 @@ RegistryQueryBinaryValue(
OUT PULONG Length
);
+__drv_requiresIRQL(PASSIVE_LEVEL)
extern NTSTATUS
RegistryUpdateBinaryValue(
IN HANDLE Key,
@@ -165,12 +182,14 @@ RegistryUpdateBinaryValue(
IN ULONG Length
);
+__drv_requiresIRQL(PASSIVE_LEVEL)
extern NTSTATUS
RegistryQueryKeyName(
IN HANDLE Key,
OUT PANSI_STRING *Array
);
+__drv_requiresIRQL(PASSIVE_LEVEL)
extern NTSTATUS
RegistryQuerySystemStartOption(
IN const CHAR *Prefix,
@@ -187,6 +206,7 @@ RegistryFreeBinaryValue(
IN PVOID Buffer
);
+__drv_requiresIRQL(PASSIVE_LEVEL)
extern NTSTATUS
RegistryUpdateSzValue(
IN HANDLE Key,
@@ -195,6 +215,7 @@ RegistryUpdateSzValue(
IN PANSI_STRING Array
);
+__drv_requiresIRQL(PASSIVE_LEVEL)
extern VOID
RegistryCloseKey(
IN HANDLE Key
--
2.10.1.windows.1
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