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Converted Bus_PlugInDevice

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This commit is contained in:
Benjamin Höglinger
2018-05-12 15:10:22 +02:00
parent 6ffe3a0d68
commit cbf3d2d186
1 changed files with 69 additions and 10 deletions
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79
sys/busenum.c
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@@ -57,24 +57,33 @@ NTSTATUS Bus_PlugInDevice(
PAGED_CODE();
TraceEvents(TRACE_LEVEL_INFORMATION, TRACE_BUSENUM, "%!FUNC! Entry");
pFdoData = FdoGetData(Device);
status = WdfRequestRetrieveInputBuffer(Request, sizeof(VIGEM_PLUGIN_TARGET), (PVOID)&plugIn, &length);
if (!NT_SUCCESS(status))
{
KdPrint((DRIVERNAME "WdfRequestRetrieveInputBuffer failed 0x%x\n", status));
TraceEvents(TRACE_LEVEL_ERROR,
TRACE_BUSENUM,
"WdfRequestRetrieveInputBuffer failed with status %!STATUS!", status);
return status;
}
if ((sizeof(VIGEM_PLUGIN_TARGET) != plugIn->Size) || (length != plugIn->Size))
{
KdPrint((DRIVERNAME "Input buffer size mismatch"));
TraceEvents(TRACE_LEVEL_ERROR,
TRACE_BUSENUM,
"sizeof(VIGEM_PLUGIN_TARGET) buffer size mismatch [%d != %d]",
sizeof(VIGEM_PLUGIN_TARGET), plugIn->Size);
return STATUS_INVALID_PARAMETER;
}
if (plugIn->SerialNo == 0)
{
KdPrint((DRIVERNAME "Serial no. 0 not allowed"));
TraceEvents(TRACE_LEVEL_ERROR,
TRACE_BUSENUM,
"Serial no. 0 not allowed");
return STATUS_INVALID_PARAMETER;
}
@@ -83,14 +92,20 @@ NTSTATUS Bus_PlugInDevice(
fileObject = WdfRequestGetFileObject(Request);
if (fileObject == NULL)
{
KdPrint((DRIVERNAME "File object associated with request is null"));
TraceEvents(TRACE_LEVEL_ERROR,
TRACE_BUSENUM,
"WdfRequestGetFileObject failed to fetch WDFFILEOBJECT from request 0x%p",
Request);
return STATUS_INVALID_PARAMETER;
}
pFileData = FileObjectGetData(fileObject);
if (pFileData == NULL)
{
KdPrint((DRIVERNAME "File object context associated with request is null"));
TraceEvents(TRACE_LEVEL_ERROR,
TRACE_BUSENUM,
"FileObjectGetData failed to get context data for 0x%p",
fileObject);
return STATUS_INVALID_PARAMETER;
}
@@ -142,22 +157,49 @@ NTSTATUS Bus_PlugInDevice(
description.ProductId = plugIn->ProductId;
}
TraceEvents(TRACE_LEVEL_VERBOSE,
TRACE_BUSENUM,
"New PDO properties: serial = %d, type = %d, pid = %d, session = %d, internal = %d, vid = 0x%X, pid = 0x%X",
description.SerialNo,
description.TargetType,
description.OwnerProcessId,
description.SessionId,
description.OwnerIsDriver,
description.VendorId,
description.ProductId
);
WdfSpinLockAcquire(pFdoData->PendingPluginRequestsLock);
KdPrint((DRIVERNAME "Items count: %d\n", WdfCollectionGetCount(pFdoData->PendingPluginRequests)));
TraceEvents(TRACE_LEVEL_VERBOSE,
TRACE_BUSENUM,
"Current pending requests count: %d",
WdfCollectionGetCount(pFdoData->PendingPluginRequests));
status = WdfChildListAddOrUpdateChildDescriptionAsPresent(WdfFdoGetDefaultChildList(Device), &description.Header, NULL);
if (!NT_SUCCESS(status))
{
KdPrint((DRIVERNAME "WdfChildListAddOrUpdateChildDescriptionAsPresent failed with 0x%X\n", status));
TraceEvents(TRACE_LEVEL_ERROR,
TRACE_BUSENUM,
"WdfChildListAddOrUpdateChildDescriptionAsPresent failed with status %!STATUS!",
status);
goto pluginEnd;
}
//
// The requested serial number is already in use
//
if (status == STATUS_OBJECT_NAME_EXISTS)
{
status = STATUS_INVALID_PARAMETER;
TraceEvents(TRACE_LEVEL_ERROR,
TRACE_BUSENUM,
"The described PDO already exists (%!STATUS!)",
status);
goto pluginEnd;
}
@@ -169,7 +211,10 @@ NTSTATUS Bus_PlugInDevice(
status = WdfObjectAllocateContext(Request, &requestAttribs, (PVOID)&pReqData);
if (!NT_SUCCESS(status))
{
KdPrint((DRIVERNAME "WdfCollectionAdd failed with 0x%X\n", status));
TraceEvents(TRACE_LEVEL_ERROR,
TRACE_BUSENUM,
"WdfObjectAllocateContext failed with status %!STATUS!",
status);
goto pluginEnd;
}
@@ -185,18 +230,32 @@ NTSTATUS Bus_PlugInDevice(
status = WdfCollectionAdd(pFdoData->PendingPluginRequests, Request);
if (!NT_SUCCESS(status))
{
KdPrint((DRIVERNAME "WdfCollectionAdd failed with 0x%X\n", status));
TraceEvents(TRACE_LEVEL_ERROR,
TRACE_BUSENUM,
"WdfCollectionAdd failed with status %!STATUS!",
status);
goto pluginEnd;
}
KdPrint((DRIVERNAME "Added item with serial: %d\n", plugIn->SerialNo));
TraceEvents(TRACE_LEVEL_INFORMATION,
TRACE_BUSENUM,
"Added item with serial: %d",
plugIn->SerialNo);
status = NT_SUCCESS(status) ? STATUS_PENDING : status;
TraceEvents(TRACE_LEVEL_INFORMATION,
TRACE_BUSENUM,
"Status before releasing lock: %!STATUS!",
status);
pluginEnd:
WdfSpinLockRelease(pFdoData->PendingPluginRequestsLock);
TraceEvents(TRACE_LEVEL_INFORMATION, TRACE_BUSENUM, "%!FUNC! Exit with status %!STATUS!", status);
return status;
}