usb hubs, hotplug support, unplug support, saving log files to disk, smt

code/kernel/ke_selftest.c

@@ -352,6 +352,7 @@ static void KiRunKernelApcSelfTest(void) {
 
 typedef struct KI_IRP_APC_SELFTEST_STATE {
     EVENT* CompletionEvent;
+    DEVICE_OBJECT* DiskDevice;
     IRP Irp;
     KAPC Apc;
     uint8_t* Buffer;
@@ -430,23 +431,18 @@ static void KiRunIrpKernelApcSelfTest(const HAL_API* hal) {
                     KiIrpApcSelfTestNormalRoutine,
                     (void*)&st);
 
-    LIST_INIT(&st.Irp.Link);
-    st.Irp.DriveIndex = 0;
-    st.Irp.Flags = 0;
-    st.Irp.Lba = 0;
-    st.Irp.SectorCount = 1;
-    st.Irp.Buffer = st.Buffer;
-    st.Irp.Status = STATUS_FAILURE;
-    st.Irp.Information = 0;
+    st.DiskDevice = IoReferenceDiskDevice(0);
+    if (!st.DiskDevice)
+        KePanic(KE_PANIC_CODE_SELFTEST, "IRP/APC selftest: drive 0 disappeared before submit\n");
+
+    IoBuildReadWriteIrp(&st.Irp, IRP_MJ_READ, 0, 512, st.Buffer);
     st.Irp.CompletionEvent = st.CompletionEvent;
     st.Irp.CompletionApc = &st.Apc;
     st.Irp.CompletionFn = (IRP_COMPLETION_FN)0;
     st.Irp.CompletionCtx = (void*)0;
-    st.Irp.HwSlot = 0;
-    st.Irp.DriverCtx = (void*)0;
 
     DbgPrint("IRP/APC selftest: submitting drive=0 lba=0 sectors=1\n");
-    s = IoSubmitIrp(&st.Irp);
+    s = IoSubmitIrp(st.DiskDevice, &st.Irp);
     if (s != STATUS_PENDING)
         KePanic(KE_PANIC_CODE_SELFTEST, "IRP/APC selftest: IoSubmitIrp returned %u\n", s);
 
@@ -472,6 +468,7 @@ static void KiRunIrpKernelApcSelfTest(const HAL_API* hal) {
              st.Buffer[510], st.Buffer[511]);
 
     MmFreePool(st.Buffer);
+    if (st.DiskDevice) IoDereferenceDeviceObject(st.DiskDevice);
     ObDereferenceObject(&st.CompletionEvent->Header);
 
     DbgPrint("IRP/APC selftest: PASS\n");