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there is another thread here with the same issue, couldn't work it out. My code:
DEFINE_GUID(GUID_MEDIA_DEVINTERFACE, 0x4d36e96c, 0xe325, 0x11ce, 0xbf, 0xc1, 0x08, 0x00, 0x2b, 0xe1, 0x03, 0x18); ... UNICODE_STRING uniName_read; NTSTATUS ntStatus = STATUS_INVALID_PARAMETER; PZZWSTR symbolicLinkList = NULL; PFILE_OBJECT pRealAudioFileObject = NULL; PDEVICE_OBJECT pRealAudioDeviceObject = NULL; ntStatus = IoGetDeviceInterfaces( &GUID_MEDIA_DEVINTERFACE, NULL, DEVICE_INTERFACE_INCLUDE_NONACTIVE, &symbolicLinkList ); size_t len = RtlStringCchLength(symbolicLinkList, 99999); if (!NT_SUCCESS(ntStatus) || !symbolicLinkList || 0 == len) return ntStatus;
Windbg shows just an '' for symbolicLinkList. The GUID is correct for SysVAD driver (my target), triple checked, and the sysvad driver is installed on the machine. What is going on here ?
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