* PURPOSE: Initializes the PnP manager
*
* PROGRAMMERS: Casper S. Hornstrup (chorns@users.sourceforge.net)
+ * Hervé Poussineau (hpoussin@reactos.org)
*/
/* INCLUDES ******************************************************************/
PDRIVER_OBJECT IopRootDriverObject;
PIO_BUS_TYPE_GUID_LIST IopBusTypeGuidList = NULL;
+// Static CRC table
+ULONG crc32Table[256] =
+{
+ 0x00000000, 0x77073096, 0xEE0E612C, 0x990951BA,
+ 0x076DC419, 0x706AF48F, 0xE963A535, 0x9E6495A3,
+ 0x0EDB8832, 0x79DCB8A4, 0xE0D5E91E, 0x97D2D988,
+ 0x09B64C2B, 0x7EB17CBD, 0xE7B82D07, 0x90BF1D91,
+ 0x1DB71064, 0x6AB020F2, 0xF3B97148, 0x84BE41DE,
+ 0x1ADAD47D, 0x6DDDE4EB, 0xF4D4B551, 0x83D385C7,
+ 0x136C9856, 0x646BA8C0, 0xFD62F97A, 0x8A65C9EC,
+ 0x14015C4F, 0x63066CD9, 0xFA0F3D63, 0x8D080DF5,
+ 0x3B6E20C8, 0x4C69105E, 0xD56041E4, 0xA2677172,
+ 0x3C03E4D1, 0x4B04D447, 0xD20D85FD, 0xA50AB56B,
+ 0x35B5A8FA, 0x42B2986C, 0xDBBBC9D6, 0xACBCF940,
+ 0x32D86CE3, 0x45DF5C75, 0xDCD60DCF, 0xABD13D59,
+ 0x26D930AC, 0x51DE003A, 0xC8D75180, 0xBFD06116,
+ 0x21B4F4B5, 0x56B3C423, 0xCFBA9599, 0xB8BDA50F,
+ 0x2802B89E, 0x5F058808, 0xC60CD9B2, 0xB10BE924,
+ 0x2F6F7C87, 0x58684C11, 0xC1611DAB, 0xB6662D3D,
+
+ 0x76DC4190, 0x01DB7106, 0x98D220BC, 0xEFD5102A,
+ 0x71B18589, 0x06B6B51F, 0x9FBFE4A5, 0xE8B8D433,
+ 0x7807C9A2, 0x0F00F934, 0x9609A88E, 0xE10E9818,
+ 0x7F6A0DBB, 0x086D3D2D, 0x91646C97, 0xE6635C01,
+ 0x6B6B51F4, 0x1C6C6162, 0x856530D8, 0xF262004E,
+ 0x6C0695ED, 0x1B01A57B, 0x8208F4C1, 0xF50FC457,
+ 0x65B0D9C6, 0x12B7E950, 0x8BBEB8EA, 0xFCB9887C,
+ 0x62DD1DDF, 0x15DA2D49, 0x8CD37CF3, 0xFBD44C65,
+ 0x4DB26158, 0x3AB551CE, 0xA3BC0074, 0xD4BB30E2,
+ 0x4ADFA541, 0x3DD895D7, 0xA4D1C46D, 0xD3D6F4FB,
+ 0x4369E96A, 0x346ED9FC, 0xAD678846, 0xDA60B8D0,
+ 0x44042D73, 0x33031DE5, 0xAA0A4C5F, 0xDD0D7CC9,
+ 0x5005713C, 0x270241AA, 0xBE0B1010, 0xC90C2086,
+ 0x5768B525, 0x206F85B3, 0xB966D409, 0xCE61E49F,
+ 0x5EDEF90E, 0x29D9C998, 0xB0D09822, 0xC7D7A8B4,
+ 0x59B33D17, 0x2EB40D81, 0xB7BD5C3B, 0xC0BA6CAD,
+
+ 0xEDB88320, 0x9ABFB3B6, 0x03B6E20C, 0x74B1D29A,
+ 0xEAD54739, 0x9DD277AF, 0x04DB2615, 0x73DC1683,
+ 0xE3630B12, 0x94643B84, 0x0D6D6A3E, 0x7A6A5AA8,
+ 0xE40ECF0B, 0x9309FF9D, 0x0A00AE27, 0x7D079EB1,
+ 0xF00F9344, 0x8708A3D2, 0x1E01F268, 0x6906C2FE,
+ 0xF762575D, 0x806567CB, 0x196C3671, 0x6E6B06E7,
+ 0xFED41B76, 0x89D32BE0, 0x10DA7A5A, 0x67DD4ACC,
+ 0xF9B9DF6F, 0x8EBEEFF9, 0x17B7BE43, 0x60B08ED5,
+ 0xD6D6A3E8, 0xA1D1937E, 0x38D8C2C4, 0x4FDFF252,
+ 0xD1BB67F1, 0xA6BC5767, 0x3FB506DD, 0x48B2364B,
+ 0xD80D2BDA, 0xAF0A1B4C, 0x36034AF6, 0x41047A60,
+ 0xDF60EFC3, 0xA867DF55, 0x316E8EEF, 0x4669BE79,
+ 0xCB61B38C, 0xBC66831A, 0x256FD2A0, 0x5268E236,
+ 0xCC0C7795, 0xBB0B4703, 0x220216B9, 0x5505262F,
+ 0xC5BA3BBE, 0xB2BD0B28, 0x2BB45A92, 0x5CB36A04,
+ 0xC2D7FFA7, 0xB5D0CF31, 0x2CD99E8B, 0x5BDEAE1D,
+
+ 0x9B64C2B0, 0xEC63F226, 0x756AA39C, 0x026D930A,
+ 0x9C0906A9, 0xEB0E363F, 0x72076785, 0x05005713,
+ 0x95BF4A82, 0xE2B87A14, 0x7BB12BAE, 0x0CB61B38,
+ 0x92D28E9B, 0xE5D5BE0D, 0x7CDCEFB7, 0x0BDBDF21,
+ 0x86D3D2D4, 0xF1D4E242, 0x68DDB3F8, 0x1FDA836E,
+ 0x81BE16CD, 0xF6B9265B, 0x6FB077E1, 0x18B74777,
+ 0x88085AE6, 0xFF0F6A70, 0x66063BCA, 0x11010B5C,
+ 0x8F659EFF, 0xF862AE69, 0x616BFFD3, 0x166CCF45,
+ 0xA00AE278, 0xD70DD2EE, 0x4E048354, 0x3903B3C2,
+ 0xA7672661, 0xD06016F7, 0x4969474D, 0x3E6E77DB,
+ 0xAED16A4A, 0xD9D65ADC, 0x40DF0B66, 0x37D83BF0,
+ 0xA9BCAE53, 0xDEBB9EC5, 0x47B2CF7F, 0x30B5FFE9,
+ 0xBDBDF21C, 0xCABAC28A, 0x53B39330, 0x24B4A3A6,
+ 0xBAD03605, 0xCDD70693, 0x54DE5729, 0x23D967BF,
+ 0xB3667A2E, 0xC4614AB8, 0x5D681B02, 0x2A6F2B94,
+ 0xB40BBE37, 0xC30C8EA1, 0x5A05DF1B, 0x2D02EF8D,
+};
+
+
/* FUNCTIONS *****************************************************************/
PDEVICE_NODE FASTCALL
}
ParentNode->Child = Node;
KeReleaseSpinLock(&IopDeviceTreeLock, OldIrql);
+ Node->Level = ParentNode->Level + 1;
}
*DeviceNode = Node;
}
+/*
+ * 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)
+{
+ ULONG KeyNameBufferLength;
+ PWSTR KeyNameBuffer = NULL;
+ PKEY_VALUE_PARTIAL_INFORMATION ParentIdPrefixInformation = NULL;
+ UNICODE_STRING KeyName;
+ UNICODE_STRING KeyValue;
+ UNICODE_STRING ValueName;
+ OBJECT_ATTRIBUTES ObjectAttributes;
+ HANDLE hKey = INVALID_HANDLE_VALUE;
+ PBYTE currentByte;
+ ULONG crc32 = 0;
+ ULONG i;
+ 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)
+ return STATUS_UNSUCCESSFUL;
+
+ /* 1. Try to retrieve ParentIdPrefix from registry */
+ KeyNameBufferLength = FIELD_OFFSET(KEY_VALUE_PARTIAL_INFORMATION, Data[0]) + MAX_PATH * sizeof(WCHAR);
+ ParentIdPrefixInformation = ExAllocatePool(PagedPool, KeyNameBufferLength + sizeof(WCHAR));
+ if (!ParentIdPrefixInformation)
+ {
+ Status = STATUS_INSUFFICIENT_RESOURCES;
+ goto cleanup;
+ }
+ KeyNameBuffer = ExAllocatePool(PagedPool, (49 * sizeof(WCHAR)) + DeviceNode->Parent->InstancePath.Length);
+ if (!KeyNameBuffer)
+ {
+ Status = STATUS_INSUFFICIENT_RESOURCES;
+ goto cleanup;
+ }
+ wcscpy(KeyNameBuffer, L"\\Registry\\Machine\\System\\CurrentControlSet\\Enum\\");
+ wcscat(KeyNameBuffer, DeviceNode->Parent->InstancePath.Buffer);
+ RtlInitUnicodeString(&KeyName, KeyNameBuffer);
+ InitializeObjectAttributes(&ObjectAttributes, &KeyName, OBJ_CASE_INSENSITIVE | OBJ_KERNEL_HANDLE, NULL, NULL);
+ Status = ZwOpenKey(&hKey, KEY_QUERY_VALUE | KEY_SET_VALUE, &ObjectAttributes);
+ 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;
+ goto cleanup;
+ }
+ if (Status != STATUS_OBJECT_NAME_NOT_FOUND)
+ goto cleanup;
+
+ /* 2. Create the ParentIdPrefix value */
+ currentByte = (PBYTE)DeviceNode->Parent;
+ for (i = 0; i < sizeof(DEVICE_NODE); i++, currentByte++)
+ crc32 = (crc32 >> 8) ^ crc32Table[*currentByte ^ (crc32 & 0xff)];
+ crc32 = ~crc32;
+ KeyValue.Buffer = (PWSTR)ParentIdPrefixInformation->Data;
+ swprintf(KeyValue.Buffer, L"%lx&%lx", DeviceNode->Parent->Level, crc32);
+
+ /* 3. Try to write the ParentIdPrefix to registry */
+ RtlInitUnicodeString(&KeyValue, KeyValue.Buffer);
+ Status = ZwSetValueKey(
+ hKey, &ValueName,
+ 0, REG_SZ,
+ (PVOID)KeyValue.Buffer,
+ (wcslen(KeyValue.Buffer) + 1) * sizeof(WCHAR));
+
+cleanup:
+ if (NT_SUCCESS(Status))
+ {
+ /* Duplicate the string to return it */
+ KeyValue.Length = KeyValue.MaximumLength = ParentIdPrefixInformation->DataLength;
+ KeyValue.Buffer = (PWSTR)ParentIdPrefixInformation->Data;
+ Status = RtlDuplicateUnicodeString(RTL_DUPLICATE_UNICODE_STRING_NULL_TERMINATE, &KeyValue, ParentIdPrefix);
+ }
+ ExFreePool(ParentIdPrefixInformation);
+ ExFreePool(KeyNameBuffer);
+ if (hKey != INVALID_HANDLE_VALUE)
+ ZwClose(hKey);
+ return Status;
+}
+
+
/*
* IopActionInterrogateDeviceStack
*
USHORT TotalLength;
HANDLE InstanceKey = NULL;
UNICODE_STRING ValueName;
+ UNICODE_STRING ParentIdPrefix = { 0 };
DEVICE_CAPABILITIES DeviceCapabilities;
DPRINT("IopActionInterrogateDeviceStack(%p, %p)\n", DeviceNode, Context);
DPRINT("IopInitiatePnpIrp() failed (Status %x)\n", Status);
}
+ DPRINT("Sending IRP_MN_QUERY_CAPABILITIES to device stack\n");
+
+ Status = IopQueryDeviceCapabilities(DeviceNode, &DeviceCapabilities);
+ if (!NT_SUCCESS(Status))
+ {
+ DPRINT("IopInitiatePnpIrp() failed (Status 0x%08lx)\n", Status);
+ }
+
+ DeviceNode->CapabilityFlags = *(PULONG)((ULONG_PTR)&DeviceCapabilities + 4);
+
+ if (!DeviceCapabilities.UniqueID)
+ {
+ /* Device has not a unique ID. We need to prepend parent bus unique identifier */
+ DPRINT("Instance ID is not unique\n");
+ Status = IopGetParentIdPrefix(DeviceNode, &ParentIdPrefix);
+ if (!NT_SUCCESS(Status))
+ {
+ DPRINT("IopGetParentIdPrefix() failed (Status 0x%08lx)\n", Status);
+ }
+ }
+
DPRINT("Sending IRP_MN_QUERY_ID.BusQueryInstanceID to device stack\n");
Stack.Parameters.QueryId.IdType = BusQueryInstanceID;
{
/* Append the instance id string */
wcscat(InstancePath, L"\\");
+ if (ParentIdPrefix.Length > 0)
+ {
+ /* Add information from parent bus device to InstancePath */
+ wcscat(InstancePath, ParentIdPrefix.Buffer);
+ if (*(PWSTR)IoStatusBlock.Information)
+ wcscat(InstancePath, L"&");
+ }
wcscat(InstancePath, (PWSTR)IoStatusBlock.Information);
/*
{
DPRINT("IopInitiatePnpIrp() failed (Status %x)\n", Status);
}
-
- Status = IopQueryDeviceCapabilities(DeviceNode, &DeviceCapabilities);
- if (!NT_SUCCESS(Status))
- {
- DPRINT("IopInitiatePnpIrp() failed (Status 0x%08lx)\n", Status);
- }
-
- DeviceNode->CapabilityFlags = *(PULONG)((ULONG_PTR)&DeviceCapabilities + 4);
-
- if (!DeviceCapabilities.UniqueID)
- {
- DPRINT("Instance ID is not unique\n");
- /* FIXME: Add information from parent bus driver to InstancePath */
- }
+ RtlFreeUnicodeString(&ParentIdPrefix);
if (!RtlCreateUnicodeString(&DeviceNode->InstancePath, InstancePath))
{
projects / reactos.git / blobdiff