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sys: device extension reference count

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This commit is contained in:
Bill Zissimopoulos
2015-11-30 00:35:28 -08:00
parent 7bd979a3fd
commit 7c3d69f63b
5 changed files with 314 additions and 159 deletions
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21
src/sys/driver.c
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@ -19,28 +19,26 @@ NTSTATUS DriverEntry(
{
FSP_ENTER();
FspDriverObject = DriverObject;
/* create the file system control device objects */
UNICODE_STRING DeviceSddl;
UNICODE_STRING DeviceName;
RtlInitUnicodeString(&DeviceSddl, L"" FSP_FSCTL_DEVICE_SDDL);
RtlInitUnicodeString(&DeviceName, L"\\Device\\" FSP_FSCTL_DISK_DEVICE_NAME);
Result = IoCreateDeviceSecure(DriverObject,
sizeof(FSP_FSCTL_DEVICE_EXTENSION), &DeviceName, FILE_DEVICE_DISK_FILE_SYSTEM,
FILE_DEVICE_SECURE_OPEN, FALSE,
Result = FspDeviceCreateSecure(FspFsctlDeviceExtensionKind, 0,
&DeviceName, FILE_DEVICE_DISK_FILE_SYSTEM,
&DeviceSddl, &FspFsctlDeviceClassGuid,
&FspFsctlDiskDeviceObject);
if (!NT_SUCCESS(Result))
FSP_RETURN();
RtlInitUnicodeString(&DeviceName, L"\\Device\\" FSP_FSCTL_NET_DEVICE_NAME);
Result = IoCreateDeviceSecure(DriverObject,
sizeof(FSP_FSCTL_DEVICE_EXTENSION), &DeviceName, FILE_DEVICE_NETWORK_FILE_SYSTEM,
FILE_DEVICE_SECURE_OPEN, FALSE,
Result = FspDeviceCreateSecure(FspFsctlDeviceExtensionKind, 0,
&DeviceName, FILE_DEVICE_NETWORK_FILE_SYSTEM,
&DeviceSddl, &FspFsctlDeviceClassGuid,
&FspFsctlNetDeviceObject);
if (!NT_SUCCESS(Result))
FSP_RETURN(IoDeleteDevice(FspFsctlDiskDeviceObject));
FspDeviceInitExtension(FspFsctlDiskDeviceObject, FspFsctlDeviceExtensionKind);
FspDeviceInitExtension(FspFsctlNetDeviceObject, FspFsctlDeviceExtensionKind);
FSP_RETURN(FspDeviceDelete(FspFsctlDiskDeviceObject));
/* setup the driver object */
DriverObject->DriverUnload = FspUnload;
@ -134,12 +132,15 @@ VOID FspUnload(
FspFsctlDiskDeviceObject = 0;
FspFsctlNetDeviceObject = 0;
FspDeviceDeleteObjects(DriverObject);
FspDeviceDeleteAll();
FspDriverObject = 0;
#pragma prefast(suppress:28175, "We are in DriverUnload: ok to access DriverName")
FSP_LEAVE_VOID("DriverName=\"%wZ\"",
&DriverObject->DriverName);
}
PDRIVER_OBJECT FspDriverObject;
PDEVICE_OBJECT FspFsctlDiskDeviceObject;
PDEVICE_OBJECT FspFsctlNetDeviceObject;