* FILE: ntoskrnl/config/cmapi.c
* PURPOSE: Configuration Manager - Internal Registry APIs
* PROGRAMMERS: Alex Ionescu (alex.ionescu@reactos.org)
+ * Eric Kohl
*/
/* INCLUDES ******************************************************************/
IN ACCESS_MASK DesiredAccess,
IN POBJECT_ATTRIBUTES ObjectAttributes,
IN ULONG TitleIndex,
- IN PUNICODE_STRING Class,
+ IN PUNICODE_STRING Class OPTIONAL,
IN ULONG CreateOptions,
- OUT PULONG Disposition)
+ OUT PULONG Disposition OPTIONAL)
{
- NTSTATUS Status = STATUS_SUCCESS;
+ NTSTATUS Status;
KPROCESSOR_MODE PreviousMode = ExGetPreviousMode();
CM_PARSE_CONTEXT ParseContext = {0};
HANDLE Handle;
ProbeForRead(ObjectAttributes,
sizeof(OBJECT_ATTRIBUTES),
sizeof(ULONG));
+
+ if (Disposition) ProbeForWriteUlong(Disposition);
}
_SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
{
- /* Get the error code */
- Status = _SEH2_GetExceptionCode();
+ /* Return the exception code */
+ _SEH2_YIELD(return _SEH2_GetExceptionCode());
}
_SEH2_END;
- if(!NT_SUCCESS(Status)) return Status;
}
else
{
{
CM_PARSE_CONTEXT ParseContext = {0};
HANDLE Handle;
- NTSTATUS Status = STATUS_SUCCESS;
+ NTSTATUS Status;
KPROCESSOR_MODE PreviousMode = ExGetPreviousMode();
PAGED_CODE();
DPRINT("NtOpenKey(OB 0x%wZ)\n", ObjectAttributes->ObjectName);
}
_SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
{
- /* Get the status */
- Status = _SEH2_GetExceptionCode();
+ /* Return the exception code */
+ _SEH2_YIELD(return _SEH2_GetExceptionCode());
}
_SEH2_END;
- if(!NT_SUCCESS(Status)) return Status;
}
/* Just let the object manager handle this */
IN ULONG Length,
OUT PULONG ResultLength)
{
+ KPROCESSOR_MODE PreviousMode = ExGetPreviousMode();
NTSTATUS Status;
PCM_KEY_BODY KeyObject;
REG_ENUMERATE_KEY_INFORMATION EnumerateKeyInfo;
NULL);
if (!NT_SUCCESS(Status)) return Status;
+ if (PreviousMode != KernelMode)
+ {
+ _SEH2_TRY
+ {
+ ProbeForWriteUlong(ResultLength);
+ ProbeForWrite(KeyInformation,
+ Length,
+ sizeof(ULONG));
+ }
+ _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
+ {
+ /* Dereference and return status */
+ ObDereferenceObject(KeyObject);
+ _SEH2_YIELD(return _SEH2_GetExceptionCode());
+ }
+ _SEH2_END;
+ }
+
/* Setup the callback */
PostOperationInfo.Object = (PVOID)KeyObject;
EnumerateKeyInfo.Object = (PVOID)KeyObject;
IN ULONG Length,
OUT PULONG ResultLength)
{
+ KPROCESSOR_MODE PreviousMode = ExGetPreviousMode();
NTSTATUS Status;
PCM_KEY_BODY KeyObject;
REG_ENUMERATE_VALUE_KEY_INFORMATION EnumerateValueKeyInfo;
NULL);
if (!NT_SUCCESS(Status)) return Status;
+ if (PreviousMode != KernelMode)
+ {
+ _SEH2_TRY
+ {
+ ProbeForWriteUlong(ResultLength);
+ ProbeForWrite(KeyValueInformation,
+ Length,
+ sizeof(ULONG));
+ }
+ _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
+ {
+ /* Dereference and return status */
+ ObDereferenceObject(KeyObject);
+ _SEH2_YIELD(return _SEH2_GetExceptionCode());
+ }
+ _SEH2_END;
+ }
+
/* Setup the callback */
PostOperationInfo.Object = (PVOID)KeyObject;
EnumerateValueKeyInfo.Object = (PVOID)KeyObject;
IN ULONG Length,
OUT PULONG ResultLength)
{
+ KPROCESSOR_MODE PreviousMode = ExGetPreviousMode();
NTSTATUS Status;
PCM_KEY_BODY KeyObject;
REG_QUERY_KEY_INFORMATION QueryKeyInfo;
/* Quit on failure */
if (!NT_SUCCESS(Status)) return Status;
+ if (PreviousMode != KernelMode)
+ {
+ _SEH2_TRY
+ {
+ ProbeForWriteUlong(ResultLength);
+ ProbeForWrite(KeyInformation,
+ Length,
+ sizeof(ULONG));
+ }
+ _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
+ {
+ /* Dereference and return status */
+ ObDereferenceObject(KeyObject);
+ _SEH2_YIELD(return _SEH2_GetExceptionCode());
+ }
+ _SEH2_END;
+ }
+
/* Setup the callback */
PostOperationInfo.Object = (PVOID)KeyObject;
QueryKeyInfo.Object = (PVOID)KeyObject;
IN ULONG Length,
OUT PULONG ResultLength)
{
+ KPROCESSOR_MODE PreviousMode = ExGetPreviousMode();
NTSTATUS Status;
PCM_KEY_BODY KeyObject;
REG_QUERY_VALUE_KEY_INFORMATION QueryValueKeyInfo;
NULL);
if (!NT_SUCCESS(Status)) return Status;
+ if (PreviousMode != KernelMode)
+ {
+ _SEH2_TRY
+ {
+ ProbeForWriteUlong(ResultLength);
+ ProbeForWrite(KeyValueInformation,
+ Length,
+ sizeof(ULONG));
+ }
+ _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
+ {
+ /* Dereference and return status */
+ ObDereferenceObject(KeyObject);
+ _SEH2_YIELD(return _SEH2_GetExceptionCode());
+ }
+ _SEH2_END;
+ }
+
/* Make sure the name is aligned properly */
if ((ValueNameCopy.Length & (sizeof(WCHAR) - 1)))
{
/* Always do this as kernel mode */
if (KeGetPreviousMode() == UserMode) return ZwInitializeRegistry(Flag);
+ /* Enough of the system has booted by now */
+ Ki386PerfEnd();
+
/* Validate flag */
if (Flag > CM_BOOT_FLAG_MAX) return STATUS_INVALID_PARAMETER;
NtQueryOpenSubKeys(IN POBJECT_ATTRIBUTES TargetKey,
OUT PULONG HandleCount)
{
- UNIMPLEMENTED;
- return STATUS_NOT_IMPLEMENTED;
+ KPROCESSOR_MODE PreviousMode;
+ PCM_KEY_BODY KeyBody = NULL;
+ HANDLE KeyHandle;
+ NTSTATUS Status;
+
+ DPRINT("NtQueryOpenSubKeys()\n");
+
+ PAGED_CODE();
+
+ /* Get the processor mode */
+ PreviousMode = KeGetPreviousMode();
+
+ if (PreviousMode != KernelMode)
+ {
+ /* Prepare to probe parameters */
+ _SEH2_TRY
+ {
+ /* Probe target key */
+ ProbeForRead(TargetKey,
+ sizeof(OBJECT_ATTRIBUTES),
+ sizeof(ULONG));
+
+ /* Probe handle count */
+ ProbeForWriteUlong(HandleCount);
+ }
+ _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
+ {
+ /* Return the exception code */
+ _SEH2_YIELD(return _SEH2_GetExceptionCode());
+ }
+ _SEH2_END;
+ }
+
+ /* Open a handle to the key */
+ Status = ObOpenObjectByName(TargetKey,
+ CmpKeyObjectType,
+ PreviousMode,
+ NULL,
+ KEY_READ,
+ NULL,
+ &KeyHandle);
+ if (NT_SUCCESS(Status))
+ {
+ /* Reference the key object */
+ Status = ObReferenceObjectByHandle(KeyHandle,
+ KEY_READ,
+ CmpKeyObjectType,
+ PreviousMode,
+ (PVOID *)&KeyBody,
+ NULL);
+
+ /* Close the handle */
+ NtClose(KeyHandle);
+ }
+
+ /* Fail, if the key object could not be referenced */
+ if (!NT_SUCCESS(Status))
+ return Status;
+
+ /* Lock the registry exclusively */
+ CmpLockRegistryExclusive();
+
+ /* Fail, if we did not open a hive root key */
+ if (KeyBody->KeyControlBlock->KeyCell !=
+ KeyBody->KeyControlBlock->KeyHive->BaseBlock->RootCell)
+ {
+ DPRINT("Error: Key is not a hive root key!\n");
+ CmpUnlockRegistry();
+ ObDereferenceObject(KeyBody);
+ return STATUS_INVALID_PARAMETER;
+ }
+
+ /* Call the internal API */
+ *HandleCount = CmCountOpenSubKeys(KeyBody->KeyControlBlock,
+ FALSE);
+
+ /* Unlock the registry */
+ CmpUnlockRegistry();
+
+ /* Dereference the key object */
+ ObDereferenceObject(KeyBody);
+
+ DPRINT("Done.\n");
+
+ return Status;
}
NTSTATUS
NTAPI
NtUnloadKey(IN POBJECT_ATTRIBUTES KeyObjectAttributes)
{
- UNIMPLEMENTED;
- return STATUS_NOT_IMPLEMENTED;
+ return NtUnloadKey2(KeyObjectAttributes, 0);
}
NTSTATUS
NtUnloadKey2(IN POBJECT_ATTRIBUTES TargetKey,
IN ULONG Flags)
{
+#if 0
+ NTSTATUS Status;
+ OBJECT_ATTRIBUTES ObjectAttributes;
+ UNICODE_STRING ObjectName;
+ CM_PARSE_CONTEXT ParseContext = {0};
+ KPROCESSOR_MODE PreviousMode = ExGetPreviousMode();
+ PCM_KEY_BODY KeyBody = NULL;
+ ULONG ParentConv = 0, ChildConv = 0;
+ HANDLE Handle;
+ PAGED_CODE();
+
+ /* Validate privilege */
+ if (!SeSinglePrivilegeCheck(SeRestorePrivilege, PreviousMode))
+ {
+ /* Fail */
+ DPRINT1("Restore Privilege missing!\n");
+ return STATUS_PRIVILEGE_NOT_HELD;
+ }
+
+ /* Check for user-mode caller */
+ if (PreviousMode != KernelMode)
+ {
+ /* Prepare to probe parameters */
+ _SEH2_TRY
+ {
+ /* Probe object attributes */
+ ProbeForRead(TargetKey,
+ sizeof(OBJECT_ATTRIBUTES),
+ sizeof(ULONG));
+
+ ObjectAttributes = *TargetKey;
+
+ /* Probe the string */
+ ProbeForReadUnicodeString(&TargetKey->ObjectName);
+
+ ObjectName = *TargetKey->ObjectName;
+
+ ProbeForRead(ObjectName.Buffer,
+ ObjectName.Length,
+ sizeof(WCHAR));
+
+ ObjectAttributes.ObjectName = &ObjectName;
+ }
+ _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
+ {
+ /* Return the exception code */
+ _SEH2_YIELD(return _SEH2_GetExceptionCode());
+ }
+ _SEH2_END;
+ }
+ else
+ {
+ /* Save the target attributes directly */
+ ObjectAttributes = *TargetKey;
+ }
+
+ /* Setup the parse context */
+ ParseContext.CreateOperation = TRUE;
+ ParseContext.CreateOptions = REG_OPTION_BACKUP_RESTORE;
+
+ /* Do the create */
+ Status = ObOpenObjectByName(&ObjectAttributes,
+ CmpKeyObjectType,
+ KernelMode,
+ NULL,
+ KEY_WRITE,
+ &ParseContext,
+ &Handle);
+
+ /* Return if failure encountered */
+ if (!NT_SUCCESS(Status)) return Status;
+
+ /* Reference it */
+ Status = ObReferenceObjectByHandle(Handle,
+ KEY_WRITE,
+ CmpKeyObjectType,
+ KernelMode,
+ (PVOID *)&KeyBody,
+ NULL);
+
+ /* Close the handle */
+ ZwClose(Handle);
+
+ /* Return if failure encountered */
+ if (!NT_SUCCESS(Status)) return Status;
+
+ /* Acquire the lock depending on flags */
+ if (Flags == REG_FORCE_UNLOAD)
+ {
+ /* Lock registry exclusively */
+ CmpLockRegistryExclusive();
+ }
+ else
+ {
+ /* Lock registry */
+ CmpLockRegistry();
+
+ /* Acquire the hive loading lock */
+ ExAcquirePushLockExclusive(&CmpLoadHiveLock);
+
+ /* Lock parent and child */
+ if (KeyBody->KeyControlBlock->ParentKcb)
+ ParentConv = KeyBody->KeyControlBlock->ParentKcb->ConvKey;
+ else
+ ParentConv = KeyBody->KeyControlBlock->ConvKey;
+
+ ChildConv = KeyBody->KeyControlBlock->ConvKey;
+
+ CmpAcquireTwoKcbLocksExclusiveByKey(ChildConv, ParentConv);
+ }
+
+ /* Check if it's being deleted already */
+ if (KeyBody->KeyControlBlock->Delete)
+ {
+ /* Return appropriate status */
+ Status = STATUS_KEY_DELETED;
+ goto Quickie;
+ }
+
+ /* Check if it's a readonly key */
+ if (KeyBody->KeyControlBlock->ExtFlags & CM_KCB_READ_ONLY_KEY)
+ {
+ /* Return appropriate status */
+ Status = STATUS_ACCESS_DENIED;
+ goto Quickie;
+ }
+
+ /* Call the internal API */
+ Status = CmUnloadKey(KeyBody->KeyControlBlock,
+ Flags);
+
+ /* Check if we failed, but really need to succeed */
+ if ((Status == STATUS_CANNOT_DELETE) && (Flags == REG_FORCE_UNLOAD))
+ {
+ /* TODO: We should perform another attempt here */
+ ASSERT(FALSE);
+ }
+
+ /* If CmUnloadKey failed we need to unlock registry ourselves */
+ if (!NT_SUCCESS(Status))
+ {
+ if (Flags != REG_FORCE_UNLOAD)
+ {
+ /* Release the hive loading lock */
+ ExReleasePushLockExclusive(&CmpLoadHiveLock);
+
+ /* Release two KCBs lock */
+ CmpReleaseTwoKcbLockByKey(ChildConv, ParentConv);
+ }
+
+ /* Unlock the registry */
+ CmpUnlockRegistry();
+ }
+
+Quickie:
+ /* Dereference the key */
+ ObDereferenceObject(KeyBody);
+
+ /* Return status */
+ return Status;
+#else
UNIMPLEMENTED;
return STATUS_NOT_IMPLEMENTED;
+#endif
}
NTSTATUS
projects / reactos.git / blobdiff