gw_fs_get_type
gw_fs_get_volume_name
gw_fs_get_serial_number
gw_fs_read_data
gw_fs_contain_data
gw_fs_is_fat12
gw_fs_is_fat16
gw_fs_is_fat32
gw_fs_is_iso9660
gw_fs_fat12_get_volume_name
gw_fs_fat16_get_volume_name
gw_fs_fat32_get_volume_name
gw_fs_iso9660_get_volume_name
gw_fs_fat12_get_serial_number
gw_fs_fat16_get_serial_number
gw_fs_fat32_get_serial_number
gw_fs_iso9660_get_serial_number