IopQueryEnvironmentVariableInfoSysEnv

INT64 __stdcall IopQueryEnvironmentVariableInfoSysEnv(
        FILE_OBJECT *FileObject,
        DEVICE_OBJECT *DeviceObject,
        UINT64 Attributes,
        UINT64 *MaximumVariableStorageSize,
        UINT64 *RemainingVariableStorageSize,
        UINT64 *MaximumVariableSize){
  int v7; 
  UINT64 InputBufferLength; 
  UINT64 v10; 
  int v11; 
  __int128 v12; 
  UINT64 v13; 
  v11 = Attributes;
  LODWORD(v10) = 24;
  v12 = 0i64;
  v13 = 0i64;
  LODWORD(InputBufferLength) = 4;
  v7 = IopIssueSystemEnvironmentRequest(
         0x520010ui64,
         1u,
         FileObject,
         DeviceObject,
         &v11,
         InputBufferLength,
         &v12,
         v10,
         0i64);
  if( v7 >= 0 )
  {
    if( MaximumVariableStorageSize )
      *MaximumVariableStorageSize = v12;
    if( RemainingVariableStorageSize )
      *RemainingVariableStorageSize = *((_QWORD *)&v12 + 1);
    if( MaximumVariableSize )
      *MaximumVariableSize = v13;
  }
  return(unsigned int)v7;
}

Referenced by: