#ifndef _NTIOAPI_H
typedef struct _FILE_NETWORK_PHYSICAL_NAME_INFORMATION
{
    ULONG FileNameLength;
    _Field_size_bytes_(FileNameLength) WCHAR FileName[1];
} FILE_NETWORK_PHYSICAL_NAME_INFORMATION, *PFILE_NETWORK_PHYSICAL_NAME_INFORMATION;
View code on GitHubThis structure is documented in Windows Driver Kit.