HelenOS sources

UDF_EFE_OFFSET    278 uspace/srv/fs/udf/udf_file.c 			    FLE32(efile->ea_length) + UDF_EFE_OFFSET, FLE32(efile->ad_length));
UDF_EFE_OFFSET    400 uspace/srv/fs/udf/udf_volume.c 		start_alloc = FLE32(efed->ea_length) + UDF_EFE_OFFSET;
HelenOS homepage, sources at GitHub