/**
* Create a filedisk PDO filled with the given disk parameters.
*
* @v MediaType The media type for the filedisk.
* @ret WV_SP_FILEDISK_T Points to the new filedisk, or NULL.
*
* Returns NULL if the PDO cannot be created.
*/
WV_SP_FILEDISK_T STDCALL WvFilediskCreatePdo(
IN WVL_E_DISK_MEDIA_TYPE MediaType
) {
NTSTATUS status;
WV_SP_FILEDISK_T filedisk;
PDEVICE_OBJECT pdo;
DBG("Creating filedisk PDO...\n");
/* Create the disk PDO. */
status = WvlDiskCreatePdo(
WvDriverObj,
sizeof *filedisk,
MediaType,
&pdo
);
if (!NT_SUCCESS(status)) {
WvlError("WvlDiskCreatePdo", status);
goto err_pdo;
}
/* Initialize. */
filedisk = pdo->DeviceExtension;
RtlZeroMemory(filedisk, sizeof *filedisk);
WvlDiskInit(filedisk->disk);
WvDevInit(filedisk->Dev);
filedisk->Dev->Ops.Free = WvFilediskFree_;
filedisk->Dev->ext = filedisk->disk;
filedisk->disk->disk_ops.Io = WvFilediskIo_;
filedisk->disk->disk_ops.UnitNum = WvFilediskUnitNum_;
filedisk->disk->disk_ops.PnpQueryId = WvFilediskPnpQueryId_;
filedisk->disk->disk_ops.PnpQueryDevText = WvDiskPnpQueryDevText;
filedisk->disk->ext = filedisk;
filedisk->disk->DriverObj = WvDriverObj;
filedisk->disk->DenyPageFile = TRUE;
InitializeListHead(filedisk->Irps);
KeInitializeSpinLock(filedisk->IrpsLock);
/* Start the thread. */
filedisk->Thread->Main.Func = WvFilediskThread_;
status = WvlThreadStart(filedisk->Thread);
if (!NT_SUCCESS(status)) {
DBG("Couldn't create thread!\n");
goto err_thread;
}
/* Set associations for the PDO, device, disk. */
WvDevForDevObj(pdo, filedisk->Dev);
WvDevSetIrpHandler(pdo, WvFilediskIrpDispatch);
filedisk->Dev->Self = pdo;
/* Some device parameters. */
pdo->Flags |= DO_DIRECT_IO; /* FIXME? */
pdo->Flags |= DO_POWER_INRUSH; /* FIXME? */
DBG("New PDO: %p\n", pdo);
return filedisk;
WvlThreadSendStopAndWait(filedisk->Thread);
err_thread:
IoDeleteDevice(pdo);
err_pdo:
return NULL;
}
/* Produce a dummy PDO node on the main bus. Internal */
static NTSTATUS STDCALL WvDummyAdd_(
IN WV_SP_DUMMY_IDS DummyIds,
IN PDEVICE_OBJECT * Pdo
) {
NTSTATUS status;
PDEVICE_OBJECT pdo = NULL;
WV_SP_DEV_T dev;
WV_SP_DUMMY_IDS new_dummy_ids;
status = IoCreateDevice(
WvDriverObj,
sizeof (WV_S_DEV_EXT),
NULL,
DummyIds->DevType,
DummyIds->DevCharacteristics,
FALSE,
&pdo
);
if (!NT_SUCCESS(status) || !pdo) {
DBG("Couldn't create dummy device.\n");
status = STATUS_INSUFFICIENT_RESOURCES;
goto err_create_pdo;
}
dev = wv_malloc(sizeof *dev);
if (!dev) {
DBG("Couldn't allocate dummy device.\n");
status = STATUS_INSUFFICIENT_RESOURCES;
goto err_dev;
}
new_dummy_ids = wv_malloc(DummyIds->Len);
if (!new_dummy_ids) {
DBG("Couldn't allocate dummy IDs.\n");
status = STATUS_INSUFFICIENT_RESOURCES;
goto err_dummy_ids;
}
/* Copy the IDs' offsets and lengths. */
RtlCopyMemory(new_dummy_ids, DummyIds, DummyIds->Len);
/* Ok! */
WvDevInit(dev);
dev->ext = new_dummy_ids; /* TODO: Implement a dummy free. Leaking. */
dev->Self = pdo;
/* Optionally fill the caller's PDO pointer. */
if (Pdo)
*Pdo = pdo;
WvDevForDevObj(pdo, dev);
WvDevSetIrpHandler(pdo, WvDummyIrpDispatch);
WvlBusInitNode(&dev->BusNode, pdo);
/* Associate the parent bus. */
dev->Parent = WvBus.Fdo;
/* Add the new PDO device to the bus' list of children. */
WvlBusAddNode(&WvBus, &dev->BusNode);
pdo->Flags &= ~DO_DEVICE_INITIALIZING;
return STATUS_SUCCESS;
wv_free(new_dummy_ids);
err_dummy_ids:
wv_free(dev);
err_dev:
IoDeleteDevice(pdo);
err_create_pdo:
return status;
}