diff --git a/src/sys/driver.h b/src/sys/driver.h
index d168cf5d..e6f20591 100644
--- a/src/sys/driver.h
+++ b/src/sys/driver.h
@@ -290,6 +290,12 @@ VOID FspIopDispatchComplete(PIRP Irp, const FSP_FSCTL_TRANSACT_RSP *Response);
 NTSTATUS FspCreateGuid(GUID *Guid);
 NTSTATUS FspSecuritySubjectContextAccessCheck(
     PSECURITY_DESCRIPTOR SecurityDescriptor, ACCESS_MASK DesiredAccess, KPROCESSOR_MODE AccessMode);
+NTSTATUS FspCreateDeviceObjectList(
+    PDRIVER_OBJECT DriverObject, PDEVICE_OBJECT **PDeviceObjects, PULONG PDeviceObjectCount);
+VOID FspDeleteDeviceObjectList(
+    PDEVICE_OBJECT *DeviceObjects, ULONG DeviceObjectCount);
+NTSTATUS FspHasDeviceObject(
+    PDRIVER_OBJECT DriverObject, PDEVICE_OBJECT DeviceObject);
 
 /* debug */
 #if DBG
diff --git a/src/sys/fsctl.c b/src/sys/fsctl.c
index fb6f2b33..c38046ac 100644
--- a/src/sys/fsctl.c
+++ b/src/sys/fsctl.c
@@ -8,6 +8,8 @@
 
 static NTSTATUS FspFsctlCreateVolume(
     PDEVICE_OBJECT DeviceObject, PIRP Irp, PIO_STACK_LOCATION IrpSp);
+static NTSTATUS FspFsctlMountVolume(
+    PDEVICE_OBJECT DeviceObject, PIRP Irp, PIO_STACK_LOCATION IrpSp);
 static NTSTATUS FspFsvrtDeleteVolume(
     PDEVICE_OBJECT DeviceObject, PIRP Irp, PIO_STACK_LOCATION IrpSp);
 static NTSTATUS FspFsvrtTransact(
@@ -23,6 +25,7 @@ FSP_IOCMPL_DISPATCH FspFileSystemControlComplete;
 
 #ifdef ALLOC_PRAGMA
 #pragma alloc_text(PAGE, FspFsctlCreateVolume)
+#pragma alloc_text(PAGE, FspFsctlMountVolume)
 #pragma alloc_text(PAGE, FspFsvrtDeleteVolume)
 #pragma alloc_text(PAGE, FspFsvrtTransact)
 #pragma alloc_text(PAGE, FspFsctlFileSystemControl)
@@ -95,6 +98,29 @@ static NTSTATUS FspFsctlCreateVolume(
     return Result;
 }
 
+static NTSTATUS FspFsctlMountVolume(
+    PDEVICE_OBJECT DeviceObject, PIRP Irp, PIO_STACK_LOCATION IrpSp)
+{
+    PAGED_CODE();
+
+    NTSTATUS Result;
+    PDEVICE_OBJECT RealDevice = IrpSp->Parameters.MountVolume.DeviceObject;
+
+    /* check the passed in volume object; it must be one of our own */
+    Result = FspHasDeviceObject(DeviceObject->DriverObject, RealDevice);
+    if (!NT_SUCCESS(Result))
+    {
+        if (STATUS_NO_SUCH_DEVICE == Result)
+            return STATUS_INVALID_PARAMETER;
+        else
+            return Result;
+    }
+    if (FILE_DEVICE_VIRTUAL_DISK != RealDevice->DeviceType)
+        return STATUS_INVALID_PARAMETER;
+
+    return Result;
+}
+
 static NTSTATUS FspFsvrtDeleteVolume(
     PDEVICE_OBJECT DeviceObject, PIRP Irp, PIO_STACK_LOCATION IrpSp)
 {
@@ -224,6 +250,14 @@ static NTSTATUS FspFsctlFileSystemControl(
             Result = FspFsctlCreateVolume(DeviceObject, Irp, IrpSp);
             break;
         }
+        break;
+    case IRP_MN_MOUNT_VOLUME:
+        Result = FspFsctlMountVolume(DeviceObject, Irp, IrpSp);
+        break;
+#if 0
+    case IRP_MN_VERIFY_VOLUME:
+        break;
+#endif
     }
     return Result;
 }
@@ -261,10 +295,6 @@ static NTSTATUS FspFsvolFileSystemControl(
     {
     case IRP_MN_USER_FS_REQUEST:
         break;
-    case IRP_MN_MOUNT_VOLUME:
-        break;
-    case IRP_MN_VERIFY_VOLUME:
-        break;
     }
     return Result;
 }
diff --git a/src/sys/misc.c b/src/sys/misc.c
index 6749a5d5..16e9ed38 100644
--- a/src/sys/misc.c
+++ b/src/sys/misc.c
@@ -49,3 +49,59 @@ NTSTATUS FspSecuritySubjectContextAccessCheck(
 
     return Result;
 }
+
+NTSTATUS FspCreateDeviceObjectList(
+    PDRIVER_OBJECT DriverObject, PDEVICE_OBJECT **PDeviceObjects, PULONG PDeviceObjectCount)
+{
+    PDEVICE_OBJECT *DeviceObjects = 0;
+    ULONG DeviceObjectCount = 0;
+
+    while (STATUS_BUFFER_TOO_SMALL == IoEnumerateDeviceObjectList(DriverObject,
+        DeviceObjects, DeviceObjectCount, &DeviceObjectCount))
+    {
+        if (0 != DeviceObjects)
+            ExFreePoolWithTag(DeviceObjects, FSP_TAG);
+        DeviceObjects = ExAllocatePoolWithTag(NonPagedPool,
+            sizeof *DeviceObjects * DeviceObjectCount, FSP_TAG);
+        if (0 == DeviceObjects)
+            return STATUS_INSUFFICIENT_RESOURCES;
+        RtlZeroMemory(DeviceObjects, sizeof *DeviceObjects * DeviceObjectCount);
+    }
+
+    *PDeviceObjects = DeviceObjects;
+    *PDeviceObjectCount = DeviceObjectCount;
+
+    return STATUS_SUCCESS;
+}
+
+VOID FspDeleteDeviceObjectList(
+    PDEVICE_OBJECT *DeviceObjects, ULONG DeviceObjectCount)
+{
+    for (ULONG i = 0; DeviceObjectCount > i; i++)
+        ObDereferenceObject(DeviceObjects[i]);
+
+    ExFreePoolWithTag(DeviceObjects, FSP_TAG);
+}
+
+NTSTATUS FspHasDeviceObject(
+    PDRIVER_OBJECT DriverObject, PDEVICE_OBJECT DeviceObject)
+{
+    NTSTATUS Result = STATUS_NO_SUCH_DEVICE;
+    PDEVICE_OBJECT *DeviceObjects = 0;
+    ULONG DeviceObjectCount = 0;
+
+    Result = FspCreateDeviceObjectList(DriverObject, &DeviceObjects, &DeviceObjectCount);
+    if (!NT_SUCCESS(Result))
+        return Result;
+
+    for (ULONG i = 0; DeviceObjectCount > i; i++)
+        if (DeviceObjects[i] == DeviceObject)
+        {
+            Result = STATUS_SUCCESS;
+            break;
+        }
+
+    FspDeleteDeviceObjectList(DeviceObjects, DeviceObjectCount);
+
+    return Result;
+}