mirror of
https://github.com/reactos/reactos.git
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1858 lines
61 KiB
C
1858 lines
61 KiB
C
/*
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* PROJECT: ReactOS Kernel
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* COPYRIGHT: GPL - See COPYING in the top level directory
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* FILE: ntoskrnl/io/pnpmgr/pnpmgr.c
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* PURPOSE: Initializes the PnP manager
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* PROGRAMMERS: Casper S. Hornstrup (chorns@users.sourceforge.net)
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* Copyright 2007 Hervé Poussineau (hpoussin@reactos.org)
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*/
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/* INCLUDES ******************************************************************/
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#include <ntoskrnl.h>
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#define NDEBUG
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#include <debug.h>
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/* GLOBALS *******************************************************************/
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ERESOURCE PpRegistryDeviceResource;
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KGUARDED_MUTEX PpDeviceReferenceTableLock;
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RTL_AVL_TABLE PpDeviceReferenceTable;
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extern ULONG ExpInitializationPhase;
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/* DATA **********************************************************************/
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PDRIVER_OBJECT IopRootDriverObject;
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PIO_BUS_TYPE_GUID_LIST PnpBusTypeGuidList = NULL;
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/* FUNCTIONS *****************************************************************/
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VOID
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IopFixupDeviceId(PWCHAR String)
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{
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SIZE_T Length = wcslen(String), i;
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for (i = 0; i < Length; i++)
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{
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if (String[i] == L'\\')
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String[i] = L'#';
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}
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}
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VOID
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NTAPI
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IopInstallCriticalDevice(PDEVICE_NODE DeviceNode)
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{
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NTSTATUS Status;
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HANDLE CriticalDeviceKey, InstanceKey;
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OBJECT_ATTRIBUTES ObjectAttributes;
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UNICODE_STRING CriticalDeviceKeyU = RTL_CONSTANT_STRING(L"\\Registry\\Machine\\System\\CurrentControlSet\\Control\\CriticalDeviceDatabase");
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UNICODE_STRING CompatibleIdU = RTL_CONSTANT_STRING(L"CompatibleIDs");
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UNICODE_STRING HardwareIdU = RTL_CONSTANT_STRING(L"HardwareID");
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UNICODE_STRING ServiceU = RTL_CONSTANT_STRING(L"Service");
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UNICODE_STRING ClassGuidU = RTL_CONSTANT_STRING(L"ClassGUID");
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PKEY_VALUE_PARTIAL_INFORMATION PartialInfo;
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ULONG HidLength = 0, CidLength = 0, BufferLength;
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PWCHAR IdBuffer, OriginalIdBuffer;
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/* Open the device instance key */
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Status = IopCreateDeviceKeyPath(&DeviceNode->InstancePath, REG_OPTION_NON_VOLATILE, &InstanceKey);
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if (Status != STATUS_SUCCESS)
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return;
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Status = ZwQueryValueKey(InstanceKey,
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&HardwareIdU,
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KeyValuePartialInformation,
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NULL,
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0,
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&HidLength);
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if (Status != STATUS_BUFFER_OVERFLOW && Status != STATUS_BUFFER_TOO_SMALL)
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{
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ZwClose(InstanceKey);
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return;
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}
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Status = ZwQueryValueKey(InstanceKey,
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&CompatibleIdU,
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KeyValuePartialInformation,
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NULL,
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0,
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&CidLength);
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if (Status != STATUS_BUFFER_OVERFLOW && Status != STATUS_BUFFER_TOO_SMALL)
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{
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CidLength = 0;
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}
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BufferLength = HidLength + CidLength;
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BufferLength -= (((CidLength != 0) ? 2 : 1) * FIELD_OFFSET(KEY_VALUE_PARTIAL_INFORMATION, Data));
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/* Allocate a buffer to hold data from both */
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OriginalIdBuffer = IdBuffer = ExAllocatePool(PagedPool, BufferLength);
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if (!IdBuffer)
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{
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ZwClose(InstanceKey);
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return;
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}
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/* Compute the buffer size */
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if (HidLength > CidLength)
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BufferLength = HidLength;
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else
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BufferLength = CidLength;
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PartialInfo = ExAllocatePool(PagedPool, BufferLength);
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if (!PartialInfo)
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{
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ZwClose(InstanceKey);
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ExFreePool(OriginalIdBuffer);
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return;
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}
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Status = ZwQueryValueKey(InstanceKey,
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&HardwareIdU,
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KeyValuePartialInformation,
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PartialInfo,
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HidLength,
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&HidLength);
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if (Status != STATUS_SUCCESS)
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{
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ExFreePool(PartialInfo);
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ExFreePool(OriginalIdBuffer);
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ZwClose(InstanceKey);
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return;
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}
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/* Copy in HID info first (without 2nd terminating NULL if CID is present) */
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HidLength = PartialInfo->DataLength - ((CidLength != 0) ? sizeof(WCHAR) : 0);
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RtlCopyMemory(IdBuffer, PartialInfo->Data, HidLength);
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if (CidLength != 0)
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{
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Status = ZwQueryValueKey(InstanceKey,
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&CompatibleIdU,
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KeyValuePartialInformation,
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PartialInfo,
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CidLength,
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&CidLength);
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if (Status != STATUS_SUCCESS)
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{
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ExFreePool(PartialInfo);
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ExFreePool(OriginalIdBuffer);
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ZwClose(InstanceKey);
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return;
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}
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/* Copy CID next */
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CidLength = PartialInfo->DataLength;
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RtlCopyMemory(((PUCHAR)IdBuffer) + HidLength, PartialInfo->Data, CidLength);
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}
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/* Free our temp buffer */
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ExFreePool(PartialInfo);
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InitializeObjectAttributes(&ObjectAttributes,
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&CriticalDeviceKeyU,
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OBJ_KERNEL_HANDLE | OBJ_CASE_INSENSITIVE,
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NULL,
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NULL);
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Status = ZwOpenKey(&CriticalDeviceKey,
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KEY_ENUMERATE_SUB_KEYS,
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&ObjectAttributes);
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if (!NT_SUCCESS(Status))
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{
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/* The critical device database doesn't exist because
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* we're probably in 1st stage setup, but it's ok */
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ExFreePool(OriginalIdBuffer);
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ZwClose(InstanceKey);
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return;
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}
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while (*IdBuffer)
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{
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USHORT StringLength = (USHORT)wcslen(IdBuffer) + 1, Index;
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IopFixupDeviceId(IdBuffer);
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/* Look through all subkeys for a match */
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for (Index = 0; TRUE; Index++)
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{
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ULONG NeededLength;
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PKEY_BASIC_INFORMATION BasicInfo;
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Status = ZwEnumerateKey(CriticalDeviceKey,
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Index,
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KeyBasicInformation,
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NULL,
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0,
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&NeededLength);
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if (Status == STATUS_NO_MORE_ENTRIES)
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break;
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else if (Status == STATUS_BUFFER_OVERFLOW || Status == STATUS_BUFFER_TOO_SMALL)
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{
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UNICODE_STRING ChildIdNameU, RegKeyNameU;
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BasicInfo = ExAllocatePool(PagedPool, NeededLength);
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if (!BasicInfo)
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{
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/* No memory */
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ExFreePool(OriginalIdBuffer);
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ZwClose(CriticalDeviceKey);
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ZwClose(InstanceKey);
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return;
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}
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Status = ZwEnumerateKey(CriticalDeviceKey,
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Index,
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KeyBasicInformation,
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BasicInfo,
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NeededLength,
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&NeededLength);
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if (Status != STATUS_SUCCESS)
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{
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/* This shouldn't happen */
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ExFreePool(BasicInfo);
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continue;
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}
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ChildIdNameU.Buffer = IdBuffer;
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ChildIdNameU.MaximumLength = ChildIdNameU.Length = (StringLength - 1) * sizeof(WCHAR);
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RegKeyNameU.Buffer = BasicInfo->Name;
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RegKeyNameU.MaximumLength = RegKeyNameU.Length = (USHORT)BasicInfo->NameLength;
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if (RtlEqualUnicodeString(&ChildIdNameU, &RegKeyNameU, TRUE))
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{
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HANDLE ChildKeyHandle;
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InitializeObjectAttributes(&ObjectAttributes,
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&ChildIdNameU,
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OBJ_KERNEL_HANDLE | OBJ_CASE_INSENSITIVE,
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CriticalDeviceKey,
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NULL);
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Status = ZwOpenKey(&ChildKeyHandle,
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KEY_QUERY_VALUE,
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&ObjectAttributes);
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if (Status != STATUS_SUCCESS)
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{
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ExFreePool(BasicInfo);
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continue;
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}
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/* Check if there's already a driver installed */
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Status = ZwQueryValueKey(InstanceKey,
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&ClassGuidU,
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KeyValuePartialInformation,
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NULL,
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0,
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&NeededLength);
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if (Status == STATUS_BUFFER_OVERFLOW || Status == STATUS_BUFFER_TOO_SMALL)
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{
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ExFreePool(BasicInfo);
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continue;
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}
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Status = ZwQueryValueKey(ChildKeyHandle,
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&ClassGuidU,
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KeyValuePartialInformation,
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NULL,
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0,
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&NeededLength);
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if (Status != STATUS_BUFFER_OVERFLOW && Status != STATUS_BUFFER_TOO_SMALL)
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{
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ExFreePool(BasicInfo);
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continue;
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}
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PartialInfo = ExAllocatePool(PagedPool, NeededLength);
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if (!PartialInfo)
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{
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ExFreePool(OriginalIdBuffer);
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ExFreePool(BasicInfo);
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ZwClose(InstanceKey);
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ZwClose(ChildKeyHandle);
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ZwClose(CriticalDeviceKey);
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return;
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}
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/* Read ClassGUID entry in the CDDB */
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Status = ZwQueryValueKey(ChildKeyHandle,
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&ClassGuidU,
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KeyValuePartialInformation,
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PartialInfo,
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NeededLength,
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&NeededLength);
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if (Status != STATUS_SUCCESS)
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{
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ExFreePool(BasicInfo);
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continue;
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}
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/* Write it to the ENUM key */
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Status = ZwSetValueKey(InstanceKey,
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&ClassGuidU,
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0,
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REG_SZ,
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PartialInfo->Data,
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PartialInfo->DataLength);
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if (Status != STATUS_SUCCESS)
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{
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ExFreePool(BasicInfo);
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ExFreePool(PartialInfo);
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ZwClose(ChildKeyHandle);
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continue;
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}
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Status = ZwQueryValueKey(ChildKeyHandle,
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&ServiceU,
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KeyValuePartialInformation,
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NULL,
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0,
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&NeededLength);
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if (Status == STATUS_BUFFER_OVERFLOW || Status == STATUS_BUFFER_TOO_SMALL)
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{
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ExFreePool(PartialInfo);
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PartialInfo = ExAllocatePool(PagedPool, NeededLength);
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if (!PartialInfo)
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{
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ExFreePool(OriginalIdBuffer);
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ExFreePool(BasicInfo);
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ZwClose(InstanceKey);
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ZwClose(ChildKeyHandle);
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ZwClose(CriticalDeviceKey);
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return;
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}
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/* Read the service entry from the CDDB */
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Status = ZwQueryValueKey(ChildKeyHandle,
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&ServiceU,
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KeyValuePartialInformation,
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PartialInfo,
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NeededLength,
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&NeededLength);
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if (Status != STATUS_SUCCESS)
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{
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ExFreePool(BasicInfo);
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ExFreePool(PartialInfo);
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ZwClose(ChildKeyHandle);
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continue;
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}
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/* Write it to the ENUM key */
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Status = ZwSetValueKey(InstanceKey,
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&ServiceU,
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0,
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REG_SZ,
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PartialInfo->Data,
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PartialInfo->DataLength);
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if (Status != STATUS_SUCCESS)
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{
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ExFreePool(BasicInfo);
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ExFreePool(PartialInfo);
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ZwClose(ChildKeyHandle);
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continue;
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}
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DPRINT("Installed service '%S' for critical device '%wZ'\n", PartialInfo->Data, &ChildIdNameU);
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}
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else
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{
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DPRINT1("Installed NULL service for critical device '%wZ'\n", &ChildIdNameU);
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}
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ExFreePool(OriginalIdBuffer);
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ExFreePool(PartialInfo);
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ExFreePool(BasicInfo);
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ZwClose(InstanceKey);
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ZwClose(ChildKeyHandle);
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ZwClose(CriticalDeviceKey);
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/* That's it */
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return;
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}
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ExFreePool(BasicInfo);
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}
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else
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{
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/* Umm, not sure what happened here */
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continue;
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}
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}
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/* Advance to the next ID */
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IdBuffer += StringLength;
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}
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ExFreePool(OriginalIdBuffer);
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ZwClose(InstanceKey);
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ZwClose(CriticalDeviceKey);
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}
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NTSTATUS
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IopGetSystemPowerDeviceObject(PDEVICE_OBJECT *DeviceObject)
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{
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KIRQL OldIrql;
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if (PopSystemPowerDeviceNode)
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{
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KeAcquireSpinLock(&IopDeviceTreeLock, &OldIrql);
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*DeviceObject = PopSystemPowerDeviceNode->PhysicalDeviceObject;
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KeReleaseSpinLock(&IopDeviceTreeLock, OldIrql);
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return STATUS_SUCCESS;
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}
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return STATUS_UNSUCCESSFUL;
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}
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USHORT
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NTAPI
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IopGetBusTypeGuidIndex(LPGUID BusTypeGuid)
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{
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USHORT i = 0, FoundIndex = 0xFFFF;
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ULONG NewSize;
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PVOID NewList;
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/* Acquire the lock */
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ExAcquireFastMutex(&PnpBusTypeGuidList->Lock);
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/* Loop all entries */
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while (i < PnpBusTypeGuidList->GuidCount)
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{
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/* Try to find a match */
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if (RtlCompareMemory(BusTypeGuid,
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&PnpBusTypeGuidList->Guids[i],
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sizeof(GUID)) == sizeof(GUID))
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{
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/* Found it */
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FoundIndex = i;
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goto Quickie;
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}
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i++;
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}
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/* Check if we have to grow the list */
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if (PnpBusTypeGuidList->GuidCount)
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{
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/* Calculate the new size */
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NewSize = sizeof(IO_BUS_TYPE_GUID_LIST) +
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(sizeof(GUID) * PnpBusTypeGuidList->GuidCount);
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/* Allocate the new copy */
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NewList = ExAllocatePool(PagedPool, NewSize);
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if (!NewList)
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{
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/* Fail */
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ExFreePool(PnpBusTypeGuidList);
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goto Quickie;
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}
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/* Now copy them, decrease the size too */
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NewSize -= sizeof(GUID);
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RtlCopyMemory(NewList, PnpBusTypeGuidList, NewSize);
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/* Free the old list */
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ExFreePool(PnpBusTypeGuidList);
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/* Use the new buffer */
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PnpBusTypeGuidList = NewList;
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}
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/* Copy the new GUID */
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RtlCopyMemory(&PnpBusTypeGuidList->Guids[PnpBusTypeGuidList->GuidCount],
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BusTypeGuid,
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sizeof(GUID));
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/* The new entry is the index */
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FoundIndex = (USHORT)PnpBusTypeGuidList->GuidCount;
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PnpBusTypeGuidList->GuidCount++;
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Quickie:
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ExReleaseFastMutex(&PnpBusTypeGuidList->Lock);
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return FoundIndex;
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}
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NTSTATUS
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NTAPI
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IopInitiatePnpIrp(IN PDEVICE_OBJECT DeviceObject,
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IN OUT PIO_STATUS_BLOCK IoStatusBlock,
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IN UCHAR MinorFunction,
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IN PIO_STACK_LOCATION Stack OPTIONAL)
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{
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IO_STACK_LOCATION IoStackLocation;
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/* Fill out the stack information */
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RtlZeroMemory(&IoStackLocation, sizeof(IO_STACK_LOCATION));
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IoStackLocation.MajorFunction = IRP_MJ_PNP;
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IoStackLocation.MinorFunction = MinorFunction;
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if (Stack)
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{
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/* Copy the rest */
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RtlCopyMemory(&IoStackLocation.Parameters,
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&Stack->Parameters,
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sizeof(Stack->Parameters));
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}
|
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|
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/* Do the PnP call */
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IoStatusBlock->Status = IopSynchronousCall(DeviceObject,
|
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&IoStackLocation,
|
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(PVOID)&IoStatusBlock->Information);
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return IoStatusBlock->Status;
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}
|
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|
|
/*
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* IopCreateDeviceKeyPath
|
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*
|
|
* Creates a registry key
|
|
*
|
|
* Parameters
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* RegistryPath
|
|
* Name of the key to be created.
|
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* Handle
|
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* Handle to the newly created key
|
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*
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* Remarks
|
|
* This method can create nested trees, so parent of RegistryPath can
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* be not existant, and will be created if needed.
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*/
|
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NTSTATUS
|
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NTAPI
|
|
IopCreateDeviceKeyPath(IN PCUNICODE_STRING RegistryPath,
|
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IN ULONG CreateOptions,
|
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OUT PHANDLE Handle)
|
|
{
|
|
UNICODE_STRING EnumU = RTL_CONSTANT_STRING(ENUM_ROOT);
|
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HANDLE hParent = NULL, hKey;
|
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OBJECT_ATTRIBUTES ObjectAttributes;
|
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UNICODE_STRING KeyName;
|
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PCWSTR Current, Last;
|
|
USHORT Length;
|
|
NTSTATUS Status;
|
|
|
|
/* Assume failure */
|
|
*Handle = NULL;
|
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|
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/* Open root key for device instances */
|
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Status = IopOpenRegistryKeyEx(&hParent, NULL, &EnumU, KEY_CREATE_SUB_KEY);
|
|
if (!NT_SUCCESS(Status))
|
|
{
|
|
DPRINT1("ZwOpenKey('%wZ') failed with status 0x%08lx\n", &EnumU, Status);
|
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return Status;
|
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}
|
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|
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Current = KeyName.Buffer = RegistryPath->Buffer;
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Last = &RegistryPath->Buffer[RegistryPath->Length / sizeof(WCHAR)];
|
|
|
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/* Go up to the end of the string */
|
|
while (Current <= Last)
|
|
{
|
|
if (Current != Last && *Current != L'\\')
|
|
{
|
|
/* Not the end of the string and not a separator */
|
|
Current++;
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continue;
|
|
}
|
|
|
|
/* Prepare relative key name */
|
|
Length = (USHORT)((ULONG_PTR)Current - (ULONG_PTR)KeyName.Buffer);
|
|
KeyName.MaximumLength = KeyName.Length = Length;
|
|
DPRINT("Create '%wZ'\n", &KeyName);
|
|
|
|
/* Open key */
|
|
InitializeObjectAttributes(&ObjectAttributes,
|
|
&KeyName,
|
|
OBJ_CASE_INSENSITIVE | OBJ_KERNEL_HANDLE,
|
|
hParent,
|
|
NULL);
|
|
Status = ZwCreateKey(&hKey,
|
|
Current == Last ? KEY_ALL_ACCESS : KEY_CREATE_SUB_KEY,
|
|
&ObjectAttributes,
|
|
0,
|
|
NULL,
|
|
CreateOptions,
|
|
NULL);
|
|
|
|
/* Close parent key handle, we don't need it anymore */
|
|
if (hParent)
|
|
ZwClose(hParent);
|
|
|
|
/* Key opening/creating failed? */
|
|
if (!NT_SUCCESS(Status))
|
|
{
|
|
DPRINT1("ZwCreateKey('%wZ') failed with status 0x%08lx\n", &KeyName, Status);
|
|
return Status;
|
|
}
|
|
|
|
/* Check if it is the end of the string */
|
|
if (Current == Last)
|
|
{
|
|
/* Yes, return success */
|
|
*Handle = hKey;
|
|
return STATUS_SUCCESS;
|
|
}
|
|
|
|
/* Start with this new parent key */
|
|
hParent = hKey;
|
|
Current++;
|
|
KeyName.Buffer = (PWSTR)Current;
|
|
}
|
|
|
|
return STATUS_UNSUCCESSFUL;
|
|
}
|
|
|
|
NTSTATUS
|
|
IopSetDeviceInstanceData(HANDLE InstanceKey,
|
|
PDEVICE_NODE DeviceNode)
|
|
{
|
|
OBJECT_ATTRIBUTES ObjectAttributes;
|
|
UNICODE_STRING KeyName;
|
|
HANDLE LogConfKey, ControlKey, DeviceParamsKey;
|
|
ULONG ResCount;
|
|
ULONG ResultLength;
|
|
NTSTATUS Status;
|
|
|
|
DPRINT("IopSetDeviceInstanceData() called\n");
|
|
|
|
/* Create the 'LogConf' key */
|
|
RtlInitUnicodeString(&KeyName, L"LogConf");
|
|
InitializeObjectAttributes(&ObjectAttributes,
|
|
&KeyName,
|
|
OBJ_CASE_INSENSITIVE | OBJ_KERNEL_HANDLE,
|
|
InstanceKey,
|
|
NULL);
|
|
Status = ZwCreateKey(&LogConfKey,
|
|
KEY_ALL_ACCESS,
|
|
&ObjectAttributes,
|
|
0,
|
|
NULL,
|
|
// FIXME? In r53694 it was silently turned from non-volatile into this,
|
|
// without any extra warning. Is this still needed??
|
|
REG_OPTION_VOLATILE,
|
|
NULL);
|
|
if (NT_SUCCESS(Status))
|
|
{
|
|
/* Set 'BootConfig' value */
|
|
if (DeviceNode->BootResources != NULL)
|
|
{
|
|
ResCount = DeviceNode->BootResources->Count;
|
|
if (ResCount != 0)
|
|
{
|
|
RtlInitUnicodeString(&KeyName, L"BootConfig");
|
|
Status = ZwSetValueKey(LogConfKey,
|
|
&KeyName,
|
|
0,
|
|
REG_RESOURCE_LIST,
|
|
DeviceNode->BootResources,
|
|
PnpDetermineResourceListSize(DeviceNode->BootResources));
|
|
}
|
|
}
|
|
|
|
/* Set 'BasicConfigVector' value */
|
|
if (DeviceNode->ResourceRequirements != NULL &&
|
|
DeviceNode->ResourceRequirements->ListSize != 0)
|
|
{
|
|
RtlInitUnicodeString(&KeyName, L"BasicConfigVector");
|
|
Status = ZwSetValueKey(LogConfKey,
|
|
&KeyName,
|
|
0,
|
|
REG_RESOURCE_REQUIREMENTS_LIST,
|
|
DeviceNode->ResourceRequirements,
|
|
DeviceNode->ResourceRequirements->ListSize);
|
|
}
|
|
|
|
ZwClose(LogConfKey);
|
|
}
|
|
|
|
/* Set the 'ConfigFlags' value */
|
|
RtlInitUnicodeString(&KeyName, L"ConfigFlags");
|
|
Status = ZwQueryValueKey(InstanceKey,
|
|
&KeyName,
|
|
KeyValueBasicInformation,
|
|
NULL,
|
|
0,
|
|
&ResultLength);
|
|
if (Status == STATUS_OBJECT_NAME_NOT_FOUND)
|
|
{
|
|
/* Write the default value */
|
|
ULONG DefaultConfigFlags = 0;
|
|
Status = ZwSetValueKey(InstanceKey,
|
|
&KeyName,
|
|
0,
|
|
REG_DWORD,
|
|
&DefaultConfigFlags,
|
|
sizeof(DefaultConfigFlags));
|
|
}
|
|
|
|
/* Create the 'Control' key */
|
|
RtlInitUnicodeString(&KeyName, L"Control");
|
|
InitializeObjectAttributes(&ObjectAttributes,
|
|
&KeyName,
|
|
OBJ_CASE_INSENSITIVE | OBJ_KERNEL_HANDLE,
|
|
InstanceKey,
|
|
NULL);
|
|
Status = ZwCreateKey(&ControlKey,
|
|
0,
|
|
&ObjectAttributes,
|
|
0,
|
|
NULL,
|
|
REG_OPTION_VOLATILE,
|
|
NULL);
|
|
if (NT_SUCCESS(Status))
|
|
ZwClose(ControlKey);
|
|
|
|
/* Create the 'Device Parameters' key and set the 'FirmwareIdentified' value for all ACPI-enumerated devices */
|
|
if (_wcsnicmp(DeviceNode->InstancePath.Buffer, L"ACPI\\", 5) == 0)
|
|
{
|
|
RtlInitUnicodeString(&KeyName, L"Device Parameters");
|
|
InitializeObjectAttributes(&ObjectAttributes,
|
|
&KeyName,
|
|
OBJ_CASE_INSENSITIVE | OBJ_KERNEL_HANDLE,
|
|
InstanceKey,
|
|
NULL);
|
|
Status = ZwCreateKey(&DeviceParamsKey,
|
|
0,
|
|
&ObjectAttributes,
|
|
0,
|
|
NULL,
|
|
REG_OPTION_NON_VOLATILE,
|
|
NULL);
|
|
if (NT_SUCCESS(Status))
|
|
{
|
|
ULONG FirmwareIdentified = 1;
|
|
RtlInitUnicodeString(&KeyName, L"FirmwareIdentified");
|
|
Status = ZwSetValueKey(DeviceParamsKey,
|
|
&KeyName,
|
|
0,
|
|
REG_DWORD,
|
|
&FirmwareIdentified,
|
|
sizeof(FirmwareIdentified));
|
|
|
|
ZwClose(DeviceParamsKey);
|
|
}
|
|
}
|
|
|
|
DPRINT("IopSetDeviceInstanceData() done\n");
|
|
|
|
return Status;
|
|
}
|
|
|
|
/*
|
|
* IopGetParentIdPrefix
|
|
*
|
|
* Retrieve (or create) a string which identifies a device.
|
|
*
|
|
* Parameters
|
|
* DeviceNode
|
|
* Pointer to device node.
|
|
* ParentIdPrefix
|
|
* Pointer to the string where is returned the parent node identifier
|
|
*
|
|
* Remarks
|
|
* If the return code is STATUS_SUCCESS, the ParentIdPrefix string is
|
|
* valid and its Buffer field is NULL-terminated. The caller needs to
|
|
* to free the string with RtlFreeUnicodeString when it is no longer
|
|
* needed.
|
|
*/
|
|
|
|
NTSTATUS
|
|
IopGetParentIdPrefix(PDEVICE_NODE DeviceNode,
|
|
PUNICODE_STRING ParentIdPrefix)
|
|
{
|
|
const UNICODE_STRING EnumKeyPath = RTL_CONSTANT_STRING(L"\\Registry\\Machine\\System\\CurrentControlSet\\Enum\\");
|
|
ULONG KeyNameBufferLength;
|
|
PKEY_VALUE_PARTIAL_INFORMATION ParentIdPrefixInformation = NULL;
|
|
UNICODE_STRING KeyName = {0, 0, NULL};
|
|
UNICODE_STRING KeyValue;
|
|
UNICODE_STRING ValueName;
|
|
HANDLE hKey = NULL;
|
|
ULONG crc32;
|
|
NTSTATUS Status;
|
|
|
|
/* HACK: As long as some devices have a NULL device
|
|
* instance path, the following test is required :(
|
|
*/
|
|
if (DeviceNode->Parent->InstancePath.Length == 0)
|
|
{
|
|
DPRINT1("Parent of %wZ has NULL Instance path, please report!\n",
|
|
&DeviceNode->InstancePath);
|
|
return STATUS_UNSUCCESSFUL;
|
|
}
|
|
|
|
/* 1. Try to retrieve ParentIdPrefix from registry */
|
|
KeyNameBufferLength = FIELD_OFFSET(KEY_VALUE_PARTIAL_INFORMATION, Data) + sizeof(L"12345678&12345678");
|
|
ParentIdPrefixInformation = ExAllocatePoolWithTag(PagedPool,
|
|
KeyNameBufferLength + sizeof(UNICODE_NULL),
|
|
TAG_IO);
|
|
if (!ParentIdPrefixInformation)
|
|
{
|
|
return STATUS_INSUFFICIENT_RESOURCES;
|
|
}
|
|
|
|
KeyName.Length = 0;
|
|
KeyName.MaximumLength = EnumKeyPath.Length +
|
|
DeviceNode->Parent->InstancePath.Length +
|
|
sizeof(UNICODE_NULL);
|
|
KeyName.Buffer = ExAllocatePoolWithTag(PagedPool,
|
|
KeyName.MaximumLength,
|
|
TAG_IO);
|
|
if (!KeyName.Buffer)
|
|
{
|
|
Status = STATUS_INSUFFICIENT_RESOURCES;
|
|
goto cleanup;
|
|
}
|
|
|
|
RtlCopyUnicodeString(&KeyName, &EnumKeyPath);
|
|
RtlAppendUnicodeStringToString(&KeyName, &DeviceNode->Parent->InstancePath);
|
|
|
|
Status = IopOpenRegistryKeyEx(&hKey, NULL, &KeyName, KEY_QUERY_VALUE | KEY_SET_VALUE);
|
|
if (!NT_SUCCESS(Status))
|
|
{
|
|
goto cleanup;
|
|
}
|
|
RtlInitUnicodeString(&ValueName, L"ParentIdPrefix");
|
|
Status = ZwQueryValueKey(hKey,
|
|
&ValueName,
|
|
KeyValuePartialInformation,
|
|
ParentIdPrefixInformation,
|
|
KeyNameBufferLength,
|
|
&KeyNameBufferLength);
|
|
if (NT_SUCCESS(Status))
|
|
{
|
|
if (ParentIdPrefixInformation->Type != REG_SZ)
|
|
{
|
|
Status = STATUS_UNSUCCESSFUL;
|
|
}
|
|
else
|
|
{
|
|
KeyValue.MaximumLength = (USHORT)ParentIdPrefixInformation->DataLength;
|
|
KeyValue.Length = KeyValue.MaximumLength - sizeof(UNICODE_NULL);
|
|
KeyValue.Buffer = (PWSTR)ParentIdPrefixInformation->Data;
|
|
ASSERT(KeyValue.Buffer[KeyValue.Length / sizeof(WCHAR)] == UNICODE_NULL);
|
|
}
|
|
goto cleanup;
|
|
}
|
|
if (Status != STATUS_OBJECT_NAME_NOT_FOUND)
|
|
{
|
|
/* FIXME how do we get here and why is ParentIdPrefixInformation valid? */
|
|
KeyValue.MaximumLength = (USHORT)ParentIdPrefixInformation->DataLength;
|
|
KeyValue.Length = KeyValue.MaximumLength - sizeof(UNICODE_NULL);
|
|
KeyValue.Buffer = (PWSTR)ParentIdPrefixInformation->Data;
|
|
ASSERT(KeyValue.Buffer[KeyValue.Length / sizeof(WCHAR)] == UNICODE_NULL);
|
|
goto cleanup;
|
|
}
|
|
|
|
/* 2. Create the ParentIdPrefix value */
|
|
crc32 = RtlComputeCrc32(0,
|
|
(PUCHAR)DeviceNode->Parent->InstancePath.Buffer,
|
|
DeviceNode->Parent->InstancePath.Length);
|
|
|
|
RtlStringCbPrintfW((PWSTR)ParentIdPrefixInformation,
|
|
KeyNameBufferLength,
|
|
L"%lx&%lx",
|
|
DeviceNode->Parent->Level,
|
|
crc32);
|
|
RtlInitUnicodeString(&KeyValue, (PWSTR)ParentIdPrefixInformation);
|
|
|
|
/* 3. Try to write the ParentIdPrefix to registry */
|
|
Status = ZwSetValueKey(hKey,
|
|
&ValueName,
|
|
0,
|
|
REG_SZ,
|
|
KeyValue.Buffer,
|
|
((ULONG)wcslen(KeyValue.Buffer) + 1) * sizeof(WCHAR));
|
|
|
|
cleanup:
|
|
if (NT_SUCCESS(Status))
|
|
{
|
|
/* Duplicate the string to return it */
|
|
Status = RtlDuplicateUnicodeString(RTL_DUPLICATE_UNICODE_STRING_NULL_TERMINATE,
|
|
&KeyValue,
|
|
ParentIdPrefix);
|
|
}
|
|
ExFreePoolWithTag(ParentIdPrefixInformation, TAG_IO);
|
|
RtlFreeUnicodeString(&KeyName);
|
|
if (hKey != NULL)
|
|
{
|
|
ZwClose(hKey);
|
|
}
|
|
return Status;
|
|
}
|
|
|
|
NTSTATUS
|
|
NTAPI
|
|
IopOpenRegistryKeyEx(PHANDLE KeyHandle,
|
|
HANDLE ParentKey,
|
|
PUNICODE_STRING Name,
|
|
ACCESS_MASK DesiredAccess)
|
|
{
|
|
OBJECT_ATTRIBUTES ObjectAttributes;
|
|
NTSTATUS Status;
|
|
|
|
PAGED_CODE();
|
|
|
|
*KeyHandle = NULL;
|
|
|
|
InitializeObjectAttributes(&ObjectAttributes,
|
|
Name,
|
|
OBJ_CASE_INSENSITIVE | OBJ_KERNEL_HANDLE,
|
|
ParentKey,
|
|
NULL);
|
|
|
|
Status = ZwOpenKey(KeyHandle, DesiredAccess, &ObjectAttributes);
|
|
|
|
return Status;
|
|
}
|
|
|
|
NTSTATUS
|
|
NTAPI
|
|
IopCreateRegistryKeyEx(OUT PHANDLE Handle,
|
|
IN HANDLE RootHandle OPTIONAL,
|
|
IN PUNICODE_STRING KeyName,
|
|
IN ACCESS_MASK DesiredAccess,
|
|
IN ULONG CreateOptions,
|
|
OUT PULONG Disposition OPTIONAL)
|
|
{
|
|
OBJECT_ATTRIBUTES ObjectAttributes;
|
|
ULONG KeyDisposition, RootHandleIndex = 0, i = 1, NestedCloseLevel = 0;
|
|
USHORT Length;
|
|
HANDLE HandleArray[2];
|
|
BOOLEAN Recursing = TRUE;
|
|
PWCHAR pp, p, p1;
|
|
UNICODE_STRING KeyString;
|
|
NTSTATUS Status = STATUS_SUCCESS;
|
|
PAGED_CODE();
|
|
|
|
/* P1 is start, pp is end */
|
|
p1 = KeyName->Buffer;
|
|
pp = (PVOID)((ULONG_PTR)p1 + KeyName->Length);
|
|
|
|
/* Create the target key */
|
|
InitializeObjectAttributes(&ObjectAttributes,
|
|
KeyName,
|
|
OBJ_CASE_INSENSITIVE | OBJ_KERNEL_HANDLE,
|
|
RootHandle,
|
|
NULL);
|
|
Status = ZwCreateKey(&HandleArray[i],
|
|
DesiredAccess,
|
|
&ObjectAttributes,
|
|
0,
|
|
NULL,
|
|
CreateOptions,
|
|
&KeyDisposition);
|
|
|
|
/* Now we check if this failed */
|
|
if ((Status == STATUS_OBJECT_NAME_NOT_FOUND) && (RootHandle))
|
|
{
|
|
/* Target key failed, so we'll need to create its parent. Setup array */
|
|
HandleArray[0] = NULL;
|
|
HandleArray[1] = RootHandle;
|
|
|
|
/* Keep recursing for each missing parent */
|
|
while (Recursing)
|
|
{
|
|
/* And if we're deep enough, close the last handle */
|
|
if (NestedCloseLevel > 1) ZwClose(HandleArray[RootHandleIndex]);
|
|
|
|
/* We're setup to ping-pong between the two handle array entries */
|
|
RootHandleIndex = i;
|
|
i = (i + 1) & 1;
|
|
|
|
/* Clear the one we're attempting to open now */
|
|
HandleArray[i] = NULL;
|
|
|
|
/* Process the parent key name */
|
|
for (p = p1; ((p < pp) && (*p != OBJ_NAME_PATH_SEPARATOR)); p++);
|
|
Length = (USHORT)(p - p1) * sizeof(WCHAR);
|
|
|
|
/* Is there a parent name? */
|
|
if (Length)
|
|
{
|
|
/* Build the unicode string for it */
|
|
KeyString.Buffer = p1;
|
|
KeyString.Length = KeyString.MaximumLength = Length;
|
|
|
|
/* Now try opening the parent */
|
|
InitializeObjectAttributes(&ObjectAttributes,
|
|
&KeyString,
|
|
OBJ_CASE_INSENSITIVE | OBJ_KERNEL_HANDLE,
|
|
HandleArray[RootHandleIndex],
|
|
NULL);
|
|
Status = ZwCreateKey(&HandleArray[i],
|
|
DesiredAccess,
|
|
&ObjectAttributes,
|
|
0,
|
|
NULL,
|
|
CreateOptions,
|
|
&KeyDisposition);
|
|
if (NT_SUCCESS(Status))
|
|
{
|
|
/* It worked, we have one more handle */
|
|
NestedCloseLevel++;
|
|
}
|
|
else
|
|
{
|
|
/* Parent key creation failed, abandon loop */
|
|
Recursing = FALSE;
|
|
continue;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
/* We don't have a parent name, probably corrupted key name */
|
|
Status = STATUS_INVALID_PARAMETER;
|
|
Recursing = FALSE;
|
|
continue;
|
|
}
|
|
|
|
/* Now see if there's more parents to create */
|
|
p1 = p + 1;
|
|
if ((p == pp) || (p1 == pp))
|
|
{
|
|
/* We're done, hopefully successfully, so stop */
|
|
Recursing = FALSE;
|
|
}
|
|
}
|
|
|
|
/* Outer loop check for handle nesting that requires closing the top handle */
|
|
if (NestedCloseLevel > 1) ZwClose(HandleArray[RootHandleIndex]);
|
|
}
|
|
|
|
/* Check if we broke out of the loop due to success */
|
|
if (NT_SUCCESS(Status))
|
|
{
|
|
/* Return the target handle (we closed all the parent ones) and disposition */
|
|
*Handle = HandleArray[i];
|
|
if (Disposition) *Disposition = KeyDisposition;
|
|
}
|
|
|
|
/* Return the success state */
|
|
return Status;
|
|
}
|
|
|
|
NTSTATUS
|
|
NTAPI
|
|
IopGetRegistryValue(IN HANDLE Handle,
|
|
IN PWSTR ValueName,
|
|
OUT PKEY_VALUE_FULL_INFORMATION *Information)
|
|
{
|
|
UNICODE_STRING ValueString;
|
|
NTSTATUS Status;
|
|
PKEY_VALUE_FULL_INFORMATION FullInformation;
|
|
ULONG Size;
|
|
PAGED_CODE();
|
|
|
|
RtlInitUnicodeString(&ValueString, ValueName);
|
|
|
|
Status = ZwQueryValueKey(Handle,
|
|
&ValueString,
|
|
KeyValueFullInformation,
|
|
NULL,
|
|
0,
|
|
&Size);
|
|
if ((Status != STATUS_BUFFER_OVERFLOW) &&
|
|
(Status != STATUS_BUFFER_TOO_SMALL))
|
|
{
|
|
return Status;
|
|
}
|
|
|
|
FullInformation = ExAllocatePool(NonPagedPool, Size);
|
|
if (!FullInformation) return STATUS_INSUFFICIENT_RESOURCES;
|
|
|
|
Status = ZwQueryValueKey(Handle,
|
|
&ValueString,
|
|
KeyValueFullInformation,
|
|
FullInformation,
|
|
Size,
|
|
&Size);
|
|
if (!NT_SUCCESS(Status))
|
|
{
|
|
ExFreePool(FullInformation);
|
|
return Status;
|
|
}
|
|
|
|
*Information = FullInformation;
|
|
return STATUS_SUCCESS;
|
|
}
|
|
|
|
RTL_GENERIC_COMPARE_RESULTS
|
|
NTAPI
|
|
PiCompareInstancePath(IN PRTL_AVL_TABLE Table,
|
|
IN PVOID FirstStruct,
|
|
IN PVOID SecondStruct)
|
|
{
|
|
/* FIXME: TODO */
|
|
ASSERT(FALSE);
|
|
return 0;
|
|
}
|
|
|
|
//
|
|
// The allocation function is called by the generic table package whenever
|
|
// it needs to allocate memory for the table.
|
|
//
|
|
|
|
PVOID
|
|
NTAPI
|
|
PiAllocateGenericTableEntry(IN PRTL_AVL_TABLE Table,
|
|
IN CLONG ByteSize)
|
|
{
|
|
/* FIXME: TODO */
|
|
ASSERT(FALSE);
|
|
return NULL;
|
|
}
|
|
|
|
VOID
|
|
NTAPI
|
|
PiFreeGenericTableEntry(IN PRTL_AVL_TABLE Table,
|
|
IN PVOID Buffer)
|
|
{
|
|
/* FIXME: TODO */
|
|
ASSERT(FALSE);
|
|
}
|
|
|
|
VOID
|
|
NTAPI
|
|
PpInitializeDeviceReferenceTable(VOID)
|
|
{
|
|
/* Setup the guarded mutex and AVL table */
|
|
KeInitializeGuardedMutex(&PpDeviceReferenceTableLock);
|
|
RtlInitializeGenericTableAvl(
|
|
&PpDeviceReferenceTable,
|
|
(PRTL_AVL_COMPARE_ROUTINE)PiCompareInstancePath,
|
|
(PRTL_AVL_ALLOCATE_ROUTINE)PiAllocateGenericTableEntry,
|
|
(PRTL_AVL_FREE_ROUTINE)PiFreeGenericTableEntry,
|
|
NULL);
|
|
}
|
|
|
|
BOOLEAN
|
|
NTAPI
|
|
PiInitPhase0(VOID)
|
|
{
|
|
/* Initialize the resource when accessing device registry data */
|
|
ExInitializeResourceLite(&PpRegistryDeviceResource);
|
|
|
|
/* Setup the device reference AVL table */
|
|
PpInitializeDeviceReferenceTable();
|
|
return TRUE;
|
|
}
|
|
|
|
BOOLEAN
|
|
NTAPI
|
|
PpInitSystem(VOID)
|
|
{
|
|
/* Check the initialization phase */
|
|
switch (ExpInitializationPhase)
|
|
{
|
|
case 0:
|
|
|
|
/* Do Phase 0 */
|
|
return PiInitPhase0();
|
|
|
|
case 1:
|
|
|
|
/* Do Phase 1 */
|
|
return TRUE;
|
|
//return PiInitPhase1();
|
|
|
|
default:
|
|
|
|
/* Don't know any other phase! Bugcheck! */
|
|
KeBugCheck(UNEXPECTED_INITIALIZATION_CALL);
|
|
return FALSE;
|
|
}
|
|
}
|
|
|
|
/* PUBLIC FUNCTIONS **********************************************************/
|
|
|
|
NTSTATUS
|
|
NTAPI
|
|
PnpBusTypeGuidGet(IN USHORT Index,
|
|
IN LPGUID BusTypeGuid)
|
|
{
|
|
NTSTATUS Status = STATUS_SUCCESS;
|
|
|
|
/* Acquire the lock */
|
|
ExAcquireFastMutex(&PnpBusTypeGuidList->Lock);
|
|
|
|
/* Validate size */
|
|
if (Index < PnpBusTypeGuidList->GuidCount)
|
|
{
|
|
/* Copy the data */
|
|
RtlCopyMemory(BusTypeGuid, &PnpBusTypeGuidList->Guids[Index], sizeof(GUID));
|
|
}
|
|
else
|
|
{
|
|
/* Failure path */
|
|
Status = STATUS_OBJECT_NAME_NOT_FOUND;
|
|
}
|
|
|
|
/* Release lock and return status */
|
|
ExReleaseFastMutex(&PnpBusTypeGuidList->Lock);
|
|
return Status;
|
|
}
|
|
|
|
NTSTATUS
|
|
NTAPI
|
|
PnpDeviceObjectToDeviceInstance(IN PDEVICE_OBJECT DeviceObject,
|
|
IN PHANDLE DeviceInstanceHandle,
|
|
IN ACCESS_MASK DesiredAccess)
|
|
{
|
|
NTSTATUS Status;
|
|
HANDLE KeyHandle;
|
|
PDEVICE_NODE DeviceNode;
|
|
UNICODE_STRING KeyName = RTL_CONSTANT_STRING(L"\\REGISTRY\\MACHINE\\SYSTEM\\CURRENTCONTROLSET\\ENUM");
|
|
PAGED_CODE();
|
|
|
|
/* Open the enum key */
|
|
Status = IopOpenRegistryKeyEx(&KeyHandle,
|
|
NULL,
|
|
&KeyName,
|
|
KEY_READ);
|
|
if (!NT_SUCCESS(Status)) return Status;
|
|
|
|
/* Make sure we have an instance path */
|
|
DeviceNode = IopGetDeviceNode(DeviceObject);
|
|
if ((DeviceNode) && (DeviceNode->InstancePath.Length))
|
|
{
|
|
/* Get the instance key */
|
|
Status = IopOpenRegistryKeyEx(DeviceInstanceHandle,
|
|
KeyHandle,
|
|
&DeviceNode->InstancePath,
|
|
DesiredAccess);
|
|
}
|
|
else
|
|
{
|
|
/* Fail */
|
|
Status = STATUS_INVALID_DEVICE_REQUEST;
|
|
}
|
|
|
|
/* Close the handle and return status */
|
|
ZwClose(KeyHandle);
|
|
return Status;
|
|
}
|
|
|
|
ULONG
|
|
NTAPI
|
|
PnpDetermineResourceListSize(IN PCM_RESOURCE_LIST ResourceList)
|
|
{
|
|
ULONG FinalSize, PartialSize, EntrySize, i, j;
|
|
PCM_FULL_RESOURCE_DESCRIPTOR FullDescriptor;
|
|
PCM_PARTIAL_RESOURCE_DESCRIPTOR PartialDescriptor;
|
|
|
|
/* If we don't have one, that's easy */
|
|
if (!ResourceList) return 0;
|
|
|
|
/* Start with the minimum size possible */
|
|
FinalSize = FIELD_OFFSET(CM_RESOURCE_LIST, List);
|
|
|
|
/* Loop each full descriptor */
|
|
FullDescriptor = ResourceList->List;
|
|
for (i = 0; i < ResourceList->Count; i++)
|
|
{
|
|
/* Start with the minimum size possible */
|
|
PartialSize = FIELD_OFFSET(CM_FULL_RESOURCE_DESCRIPTOR, PartialResourceList) +
|
|
FIELD_OFFSET(CM_PARTIAL_RESOURCE_LIST, PartialDescriptors);
|
|
|
|
/* Loop each partial descriptor */
|
|
PartialDescriptor = FullDescriptor->PartialResourceList.PartialDescriptors;
|
|
for (j = 0; j < FullDescriptor->PartialResourceList.Count; j++)
|
|
{
|
|
/* Start with the minimum size possible */
|
|
EntrySize = sizeof(CM_PARTIAL_RESOURCE_DESCRIPTOR);
|
|
|
|
/* Check if there is extra data */
|
|
if (PartialDescriptor->Type == CmResourceTypeDeviceSpecific)
|
|
{
|
|
/* Add that data */
|
|
EntrySize += PartialDescriptor->u.DeviceSpecificData.DataSize;
|
|
}
|
|
|
|
/* The size of partial descriptors is bigger */
|
|
PartialSize += EntrySize;
|
|
|
|
/* Go to the next partial descriptor */
|
|
PartialDescriptor = (PVOID)((ULONG_PTR)PartialDescriptor + EntrySize);
|
|
}
|
|
|
|
/* The size of full descriptors is bigger */
|
|
FinalSize += PartialSize;
|
|
|
|
/* Go to the next full descriptor */
|
|
FullDescriptor = (PVOID)((ULONG_PTR)FullDescriptor + PartialSize);
|
|
}
|
|
|
|
/* Return the final size */
|
|
return FinalSize;
|
|
}
|
|
|
|
NTSTATUS
|
|
NTAPI
|
|
PiGetDeviceRegistryProperty(IN PDEVICE_OBJECT DeviceObject,
|
|
IN ULONG ValueType,
|
|
IN PWSTR ValueName,
|
|
IN PWSTR KeyName,
|
|
OUT PVOID Buffer,
|
|
IN PULONG BufferLength)
|
|
{
|
|
NTSTATUS Status;
|
|
HANDLE KeyHandle, SubHandle;
|
|
UNICODE_STRING KeyString;
|
|
PKEY_VALUE_FULL_INFORMATION KeyValueInfo = NULL;
|
|
ULONG Length;
|
|
PAGED_CODE();
|
|
|
|
/* Find the instance key */
|
|
Status = PnpDeviceObjectToDeviceInstance(DeviceObject, &KeyHandle, KEY_READ);
|
|
if (NT_SUCCESS(Status))
|
|
{
|
|
/* Check for name given by caller */
|
|
if (KeyName)
|
|
{
|
|
/* Open this key */
|
|
RtlInitUnicodeString(&KeyString, KeyName);
|
|
Status = IopOpenRegistryKeyEx(&SubHandle,
|
|
KeyHandle,
|
|
&KeyString,
|
|
KEY_READ);
|
|
if (NT_SUCCESS(Status))
|
|
{
|
|
/* And use this handle instead */
|
|
ZwClose(KeyHandle);
|
|
KeyHandle = SubHandle;
|
|
}
|
|
}
|
|
|
|
/* Check if sub-key handle succeeded (or no-op if no key name given) */
|
|
if (NT_SUCCESS(Status))
|
|
{
|
|
/* Now get the size of the property */
|
|
Status = IopGetRegistryValue(KeyHandle,
|
|
ValueName,
|
|
&KeyValueInfo);
|
|
}
|
|
|
|
/* Close the key */
|
|
ZwClose(KeyHandle);
|
|
}
|
|
|
|
/* Fail if any of the registry operations failed */
|
|
if (!NT_SUCCESS(Status)) return Status;
|
|
|
|
/* Check how much data we have to copy */
|
|
Length = KeyValueInfo->DataLength;
|
|
if (*BufferLength >= Length)
|
|
{
|
|
/* Check for a match in the value type */
|
|
if (KeyValueInfo->Type == ValueType)
|
|
{
|
|
/* Copy the data */
|
|
RtlCopyMemory(Buffer,
|
|
(PVOID)((ULONG_PTR)KeyValueInfo +
|
|
KeyValueInfo->DataOffset),
|
|
Length);
|
|
}
|
|
else
|
|
{
|
|
/* Invalid registry property type, fail */
|
|
Status = STATUS_INVALID_PARAMETER_2;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
/* Buffer is too small to hold data */
|
|
Status = STATUS_BUFFER_TOO_SMALL;
|
|
}
|
|
|
|
/* Return the required buffer length, free the buffer, and return status */
|
|
*BufferLength = Length;
|
|
ExFreePool(KeyValueInfo);
|
|
return Status;
|
|
}
|
|
|
|
#define PIP_RETURN_DATA(x, y) {ReturnLength = x; Data = y; Status = STATUS_SUCCESS; break;}
|
|
#define PIP_REGISTRY_DATA(x, y) {ValueName = x; ValueType = y; break;}
|
|
#define PIP_UNIMPLEMENTED() {UNIMPLEMENTED_DBGBREAK(); break;}
|
|
|
|
/*
|
|
* @implemented
|
|
*/
|
|
NTSTATUS
|
|
NTAPI
|
|
IoGetDeviceProperty(IN PDEVICE_OBJECT DeviceObject,
|
|
IN DEVICE_REGISTRY_PROPERTY DeviceProperty,
|
|
IN ULONG BufferLength,
|
|
OUT PVOID PropertyBuffer,
|
|
OUT PULONG ResultLength)
|
|
{
|
|
PDEVICE_NODE DeviceNode = IopGetDeviceNode(DeviceObject);
|
|
DEVICE_CAPABILITIES DeviceCaps;
|
|
ULONG ReturnLength = 0, Length = 0, ValueType;
|
|
PWCHAR ValueName = NULL, EnumeratorNameEnd, DeviceInstanceName;
|
|
PVOID Data = NULL;
|
|
NTSTATUS Status = STATUS_BUFFER_TOO_SMALL;
|
|
GUID BusTypeGuid;
|
|
POBJECT_NAME_INFORMATION ObjectNameInfo = NULL;
|
|
BOOLEAN NullTerminate = FALSE;
|
|
DEVICE_REMOVAL_POLICY Policy;
|
|
|
|
DPRINT("IoGetDeviceProperty(0x%p %d)\n", DeviceObject, DeviceProperty);
|
|
|
|
/* Assume failure */
|
|
*ResultLength = 0;
|
|
|
|
/* Only PDOs can call this */
|
|
if (!DeviceNode) return STATUS_INVALID_DEVICE_REQUEST;
|
|
|
|
/* Handle all properties */
|
|
switch (DeviceProperty)
|
|
{
|
|
case DevicePropertyBusTypeGuid:
|
|
|
|
/* Get the GUID from the internal cache */
|
|
Status = PnpBusTypeGuidGet(DeviceNode->ChildBusTypeIndex, &BusTypeGuid);
|
|
if (!NT_SUCCESS(Status)) return Status;
|
|
|
|
/* This is the format of the returned data */
|
|
PIP_RETURN_DATA(sizeof(GUID), &BusTypeGuid);
|
|
|
|
case DevicePropertyLegacyBusType:
|
|
|
|
/* Validate correct interface type */
|
|
if (DeviceNode->ChildInterfaceType == InterfaceTypeUndefined)
|
|
return STATUS_OBJECT_NAME_NOT_FOUND;
|
|
|
|
/* This is the format of the returned data */
|
|
PIP_RETURN_DATA(sizeof(INTERFACE_TYPE), &DeviceNode->ChildInterfaceType);
|
|
|
|
case DevicePropertyBusNumber:
|
|
|
|
/* Validate correct bus number */
|
|
if ((DeviceNode->ChildBusNumber & 0x80000000) == 0x80000000)
|
|
return STATUS_OBJECT_NAME_NOT_FOUND;
|
|
|
|
/* This is the format of the returned data */
|
|
PIP_RETURN_DATA(sizeof(ULONG), &DeviceNode->ChildBusNumber);
|
|
|
|
case DevicePropertyEnumeratorName:
|
|
|
|
/* Get the instance path */
|
|
DeviceInstanceName = DeviceNode->InstancePath.Buffer;
|
|
|
|
/* Sanity checks */
|
|
ASSERT((BufferLength & 1) == 0);
|
|
ASSERT(DeviceInstanceName != NULL);
|
|
|
|
/* Get the name from the path */
|
|
EnumeratorNameEnd = wcschr(DeviceInstanceName, OBJ_NAME_PATH_SEPARATOR);
|
|
ASSERT(EnumeratorNameEnd);
|
|
|
|
/* This string needs to be NULL-terminated */
|
|
NullTerminate = TRUE;
|
|
|
|
/* This is the format of the returned data */
|
|
PIP_RETURN_DATA((ULONG)(EnumeratorNameEnd - DeviceInstanceName) * sizeof(WCHAR),
|
|
DeviceInstanceName);
|
|
|
|
case DevicePropertyAddress:
|
|
|
|
/* Query the device caps */
|
|
Status = IopQueryDeviceCapabilities(DeviceNode, &DeviceCaps);
|
|
if (!NT_SUCCESS(Status) || (DeviceCaps.Address == MAXULONG))
|
|
return STATUS_OBJECT_NAME_NOT_FOUND;
|
|
|
|
/* This is the format of the returned data */
|
|
PIP_RETURN_DATA(sizeof(ULONG), &DeviceCaps.Address);
|
|
|
|
case DevicePropertyBootConfigurationTranslated:
|
|
|
|
/* Validate we have resources */
|
|
if (!DeviceNode->BootResources)
|
|
// if (!DeviceNode->BootResourcesTranslated) // FIXFIX: Need this field
|
|
{
|
|
/* No resources will still fake success, but with 0 bytes */
|
|
*ResultLength = 0;
|
|
return STATUS_SUCCESS;
|
|
}
|
|
|
|
/* This is the format of the returned data */
|
|
PIP_RETURN_DATA(PnpDetermineResourceListSize(DeviceNode->BootResources), // FIXFIX: Should use BootResourcesTranslated
|
|
DeviceNode->BootResources); // FIXFIX: Should use BootResourcesTranslated
|
|
|
|
case DevicePropertyPhysicalDeviceObjectName:
|
|
|
|
/* Sanity check for Unicode-sized string */
|
|
ASSERT((BufferLength & 1) == 0);
|
|
|
|
/* Allocate name buffer */
|
|
Length = BufferLength + sizeof(OBJECT_NAME_INFORMATION);
|
|
ObjectNameInfo = ExAllocatePool(PagedPool, Length);
|
|
if (!ObjectNameInfo) return STATUS_INSUFFICIENT_RESOURCES;
|
|
|
|
/* Query the PDO name */
|
|
Status = ObQueryNameString(DeviceObject,
|
|
ObjectNameInfo,
|
|
Length,
|
|
ResultLength);
|
|
if (Status == STATUS_INFO_LENGTH_MISMATCH)
|
|
{
|
|
/* It's up to the caller to try again */
|
|
Status = STATUS_BUFFER_TOO_SMALL;
|
|
}
|
|
|
|
/* This string needs to be NULL-terminated */
|
|
NullTerminate = TRUE;
|
|
|
|
/* Return if successful */
|
|
if (NT_SUCCESS(Status)) PIP_RETURN_DATA(ObjectNameInfo->Name.Length,
|
|
ObjectNameInfo->Name.Buffer);
|
|
|
|
/* Let the caller know how big the name is */
|
|
*ResultLength -= sizeof(OBJECT_NAME_INFORMATION);
|
|
break;
|
|
|
|
case DevicePropertyRemovalPolicy:
|
|
|
|
Policy = DeviceNode->RemovalPolicy;
|
|
PIP_RETURN_DATA(sizeof(Policy), &Policy);
|
|
|
|
/* Handle the registry-based properties */
|
|
case DevicePropertyUINumber:
|
|
PIP_REGISTRY_DATA(REGSTR_VAL_UI_NUMBER, REG_DWORD);
|
|
case DevicePropertyLocationInformation:
|
|
PIP_REGISTRY_DATA(REGSTR_VAL_LOCATION_INFORMATION, REG_SZ);
|
|
case DevicePropertyDeviceDescription:
|
|
PIP_REGISTRY_DATA(REGSTR_VAL_DEVDESC, REG_SZ);
|
|
case DevicePropertyHardwareID:
|
|
PIP_REGISTRY_DATA(REGSTR_VAL_HARDWAREID, REG_MULTI_SZ);
|
|
case DevicePropertyCompatibleIDs:
|
|
PIP_REGISTRY_DATA(REGSTR_VAL_COMPATIBLEIDS, REG_MULTI_SZ);
|
|
case DevicePropertyBootConfiguration:
|
|
PIP_REGISTRY_DATA(REGSTR_VAL_BOOTCONFIG, REG_RESOURCE_LIST);
|
|
case DevicePropertyClassName:
|
|
PIP_REGISTRY_DATA(REGSTR_VAL_CLASS, REG_SZ);
|
|
case DevicePropertyClassGuid:
|
|
PIP_REGISTRY_DATA(REGSTR_VAL_CLASSGUID, REG_SZ);
|
|
case DevicePropertyDriverKeyName:
|
|
PIP_REGISTRY_DATA(REGSTR_VAL_DRIVER, REG_SZ);
|
|
case DevicePropertyManufacturer:
|
|
PIP_REGISTRY_DATA(REGSTR_VAL_MFG, REG_SZ);
|
|
case DevicePropertyFriendlyName:
|
|
PIP_REGISTRY_DATA(REGSTR_VAL_FRIENDLYNAME, REG_SZ);
|
|
case DevicePropertyContainerID:
|
|
//PIP_REGISTRY_DATA(REGSTR_VAL_CONTAINERID, REG_SZ); // Win7
|
|
PIP_UNIMPLEMENTED();
|
|
break;
|
|
case DevicePropertyInstallState:
|
|
PIP_REGISTRY_DATA(REGSTR_VAL_CONFIGFLAGS, REG_DWORD);
|
|
break;
|
|
case DevicePropertyResourceRequirements:
|
|
PIP_UNIMPLEMENTED();
|
|
case DevicePropertyAllocatedResources:
|
|
PIP_UNIMPLEMENTED();
|
|
default:
|
|
return STATUS_INVALID_PARAMETER_2;
|
|
}
|
|
|
|
/* Having a registry value name implies registry data */
|
|
if (ValueName)
|
|
{
|
|
/* We know up-front how much data to expect */
|
|
*ResultLength = BufferLength;
|
|
|
|
/* Go get the data, use the LogConf subkey if necessary */
|
|
Status = PiGetDeviceRegistryProperty(DeviceObject,
|
|
ValueType,
|
|
ValueName,
|
|
(DeviceProperty ==
|
|
DevicePropertyBootConfiguration) ?
|
|
L"LogConf": NULL,
|
|
PropertyBuffer,
|
|
ResultLength);
|
|
}
|
|
else if (NT_SUCCESS(Status))
|
|
{
|
|
/* We know up-front how much data to expect, check the caller's buffer */
|
|
*ResultLength = ReturnLength + (NullTerminate ? sizeof(UNICODE_NULL) : 0);
|
|
if (*ResultLength <= BufferLength)
|
|
{
|
|
/* Buffer is all good, copy the data */
|
|
RtlCopyMemory(PropertyBuffer, Data, ReturnLength);
|
|
|
|
/* Check if we need to NULL-terminate the string */
|
|
if (NullTerminate)
|
|
{
|
|
/* Terminate the string */
|
|
((PWCHAR)PropertyBuffer)[ReturnLength / sizeof(WCHAR)] = UNICODE_NULL;
|
|
}
|
|
|
|
/* This is the success path */
|
|
Status = STATUS_SUCCESS;
|
|
}
|
|
else
|
|
{
|
|
/* Failure path */
|
|
Status = STATUS_BUFFER_TOO_SMALL;
|
|
}
|
|
}
|
|
|
|
/* Free any allocation we may have made, and return the status code */
|
|
if (ObjectNameInfo) ExFreePool(ObjectNameInfo);
|
|
return Status;
|
|
}
|
|
|
|
/**
|
|
* @name IoOpenDeviceRegistryKey
|
|
*
|
|
* Open a registry key unique for a specified driver or device instance.
|
|
*
|
|
* @param DeviceObject Device to get the registry key for.
|
|
* @param DevInstKeyType Type of the key to return.
|
|
* @param DesiredAccess Access mask (eg. KEY_READ | KEY_WRITE).
|
|
* @param DevInstRegKey Handle to the opened registry key on
|
|
* successful return.
|
|
*
|
|
* @return Status.
|
|
*
|
|
* @implemented
|
|
*/
|
|
NTSTATUS
|
|
NTAPI
|
|
IoOpenDeviceRegistryKey(IN PDEVICE_OBJECT DeviceObject,
|
|
IN ULONG DevInstKeyType,
|
|
IN ACCESS_MASK DesiredAccess,
|
|
OUT PHANDLE DevInstRegKey)
|
|
{
|
|
static WCHAR RootKeyName[] =
|
|
L"\\Registry\\Machine\\System\\CurrentControlSet\\";
|
|
static WCHAR ProfileKeyName[] =
|
|
L"Hardware Profiles\\Current\\System\\CurrentControlSet\\";
|
|
static WCHAR ClassKeyName[] = L"Control\\Class\\";
|
|
static WCHAR EnumKeyName[] = L"Enum\\";
|
|
static WCHAR DeviceParametersKeyName[] = L"Device Parameters";
|
|
ULONG KeyNameLength;
|
|
PWSTR KeyNameBuffer;
|
|
UNICODE_STRING KeyName;
|
|
ULONG DriverKeyLength;
|
|
OBJECT_ATTRIBUTES ObjectAttributes;
|
|
PDEVICE_NODE DeviceNode = NULL;
|
|
NTSTATUS Status;
|
|
|
|
DPRINT("IoOpenDeviceRegistryKey() called\n");
|
|
|
|
if ((DevInstKeyType & (PLUGPLAY_REGKEY_DEVICE | PLUGPLAY_REGKEY_DRIVER)) == 0)
|
|
{
|
|
DPRINT1("IoOpenDeviceRegistryKey(): got wrong params, exiting...\n");
|
|
return STATUS_INVALID_PARAMETER;
|
|
}
|
|
|
|
if (!IopIsValidPhysicalDeviceObject(DeviceObject))
|
|
return STATUS_INVALID_DEVICE_REQUEST;
|
|
DeviceNode = IopGetDeviceNode(DeviceObject);
|
|
|
|
/*
|
|
* Calculate the length of the base key name. This is the full
|
|
* name for driver key or the name excluding "Device Parameters"
|
|
* subkey for device key.
|
|
*/
|
|
|
|
KeyNameLength = sizeof(RootKeyName);
|
|
if (DevInstKeyType & PLUGPLAY_REGKEY_CURRENT_HWPROFILE)
|
|
KeyNameLength += sizeof(ProfileKeyName) - sizeof(UNICODE_NULL);
|
|
if (DevInstKeyType & PLUGPLAY_REGKEY_DRIVER)
|
|
{
|
|
KeyNameLength += sizeof(ClassKeyName) - sizeof(UNICODE_NULL);
|
|
Status = IoGetDeviceProperty(DeviceObject, DevicePropertyDriverKeyName,
|
|
0, NULL, &DriverKeyLength);
|
|
if (Status != STATUS_BUFFER_TOO_SMALL)
|
|
return Status;
|
|
KeyNameLength += DriverKeyLength;
|
|
}
|
|
else
|
|
{
|
|
KeyNameLength += sizeof(EnumKeyName) - sizeof(UNICODE_NULL) +
|
|
DeviceNode->InstancePath.Length;
|
|
}
|
|
|
|
/*
|
|
* Now allocate the buffer for the key name...
|
|
*/
|
|
|
|
KeyNameBuffer = ExAllocatePool(PagedPool, KeyNameLength);
|
|
if (KeyNameBuffer == NULL)
|
|
return STATUS_INSUFFICIENT_RESOURCES;
|
|
|
|
KeyName.Length = 0;
|
|
KeyName.MaximumLength = (USHORT)KeyNameLength;
|
|
KeyName.Buffer = KeyNameBuffer;
|
|
|
|
/*
|
|
* ...and build the key name.
|
|
*/
|
|
|
|
KeyName.Length += sizeof(RootKeyName) - sizeof(UNICODE_NULL);
|
|
RtlCopyMemory(KeyNameBuffer, RootKeyName, KeyName.Length);
|
|
|
|
if (DevInstKeyType & PLUGPLAY_REGKEY_CURRENT_HWPROFILE)
|
|
RtlAppendUnicodeToString(&KeyName, ProfileKeyName);
|
|
|
|
if (DevInstKeyType & PLUGPLAY_REGKEY_DRIVER)
|
|
{
|
|
RtlAppendUnicodeToString(&KeyName, ClassKeyName);
|
|
Status = IoGetDeviceProperty(DeviceObject, DevicePropertyDriverKeyName,
|
|
DriverKeyLength, KeyNameBuffer +
|
|
(KeyName.Length / sizeof(WCHAR)),
|
|
&DriverKeyLength);
|
|
if (!NT_SUCCESS(Status))
|
|
{
|
|
DPRINT1("Call to IoGetDeviceProperty() failed with Status 0x%08lx\n", Status);
|
|
ExFreePool(KeyNameBuffer);
|
|
return Status;
|
|
}
|
|
KeyName.Length += (USHORT)DriverKeyLength - sizeof(UNICODE_NULL);
|
|
}
|
|
else
|
|
{
|
|
RtlAppendUnicodeToString(&KeyName, EnumKeyName);
|
|
Status = RtlAppendUnicodeStringToString(&KeyName, &DeviceNode->InstancePath);
|
|
if (DeviceNode->InstancePath.Length == 0)
|
|
{
|
|
ExFreePool(KeyNameBuffer);
|
|
return Status;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Open the base key.
|
|
*/
|
|
Status = IopOpenRegistryKeyEx(DevInstRegKey, NULL, &KeyName, DesiredAccess);
|
|
if (!NT_SUCCESS(Status))
|
|
{
|
|
DPRINT1("IoOpenDeviceRegistryKey(%wZ): Base key doesn't exist, exiting... (Status 0x%08lx)\n", &KeyName, Status);
|
|
ExFreePool(KeyNameBuffer);
|
|
return Status;
|
|
}
|
|
ExFreePool(KeyNameBuffer);
|
|
|
|
/*
|
|
* For driver key we're done now.
|
|
*/
|
|
|
|
if (DevInstKeyType & PLUGPLAY_REGKEY_DRIVER)
|
|
return Status;
|
|
|
|
/*
|
|
* Let's go further. For device key we must open "Device Parameters"
|
|
* subkey and create it if it doesn't exist yet.
|
|
*/
|
|
|
|
RtlInitUnicodeString(&KeyName, DeviceParametersKeyName);
|
|
InitializeObjectAttributes(&ObjectAttributes,
|
|
&KeyName,
|
|
OBJ_CASE_INSENSITIVE | OBJ_KERNEL_HANDLE,
|
|
*DevInstRegKey,
|
|
NULL);
|
|
Status = ZwCreateKey(DevInstRegKey,
|
|
DesiredAccess,
|
|
&ObjectAttributes,
|
|
0,
|
|
NULL,
|
|
REG_OPTION_NON_VOLATILE,
|
|
NULL);
|
|
ZwClose(ObjectAttributes.RootDirectory);
|
|
|
|
return Status;
|
|
}
|
|
|
|
/*
|
|
* @implemented
|
|
*/
|
|
VOID
|
|
NTAPI
|
|
IoInvalidateDeviceRelations(
|
|
IN PDEVICE_OBJECT DeviceObject,
|
|
IN DEVICE_RELATION_TYPE Type)
|
|
{
|
|
if (!IopIsValidPhysicalDeviceObject(DeviceObject))
|
|
{
|
|
KeBugCheckEx(PNP_DETECTED_FATAL_ERROR, 0x2, (ULONG_PTR)DeviceObject, 0, 0);
|
|
}
|
|
|
|
switch (Type)
|
|
{
|
|
case BusRelations:
|
|
/* Enumerate the device */
|
|
PiQueueDeviceAction(DeviceObject, PiActionEnumDeviceTree, NULL, NULL);
|
|
break;
|
|
default:
|
|
/* Everything else is not implemented */
|
|
break;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* @implemented
|
|
*/
|
|
NTSTATUS
|
|
NTAPI
|
|
IoSynchronousInvalidateDeviceRelations(
|
|
IN PDEVICE_OBJECT DeviceObject,
|
|
IN DEVICE_RELATION_TYPE Type)
|
|
{
|
|
PAGED_CODE();
|
|
|
|
if (!IopIsValidPhysicalDeviceObject(DeviceObject))
|
|
{
|
|
KeBugCheckEx(PNP_DETECTED_FATAL_ERROR, 0x2, (ULONG_PTR)DeviceObject, 0, 0);
|
|
}
|
|
|
|
switch (Type)
|
|
{
|
|
case BusRelations:
|
|
/* Enumerate the device */
|
|
return PiPerformSyncDeviceAction(DeviceObject, PiActionEnumDeviceTree);
|
|
case PowerRelations:
|
|
/* Not handled yet */
|
|
return STATUS_NOT_IMPLEMENTED;
|
|
case TargetDeviceRelation:
|
|
/* Nothing to do */
|
|
return STATUS_SUCCESS;
|
|
default:
|
|
/* Ejection relations are not supported */
|
|
return STATUS_NOT_SUPPORTED;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* @implemented
|
|
*/
|
|
BOOLEAN
|
|
NTAPI
|
|
IoTranslateBusAddress(IN INTERFACE_TYPE InterfaceType,
|
|
IN ULONG BusNumber,
|
|
IN PHYSICAL_ADDRESS BusAddress,
|
|
IN OUT PULONG AddressSpace,
|
|
OUT PPHYSICAL_ADDRESS TranslatedAddress)
|
|
{
|
|
/* FIXME: Notify the resource arbiter */
|
|
|
|
return HalTranslateBusAddress(InterfaceType,
|
|
BusNumber,
|
|
BusAddress,
|
|
AddressSpace,
|
|
TranslatedAddress);
|
|
}
|
|
|
|
VOID
|
|
NTAPI
|
|
IoInvalidateDeviceState(
|
|
IN PDEVICE_OBJECT DeviceObject)
|
|
{
|
|
if (!IopIsValidPhysicalDeviceObject(DeviceObject))
|
|
{
|
|
KeBugCheckEx(PNP_DETECTED_FATAL_ERROR, 0x2, (ULONG_PTR)DeviceObject, 0, 0);
|
|
}
|
|
|
|
PiQueueDeviceAction(DeviceObject, PiActionQueryState, NULL, NULL);
|
|
}
|