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# SPDX-License-Identifier: GPL-2.0-only
config ISO9660_FS
tristate "ISO 9660 CDROM file system support"
This is the standard file system used on CD-ROMs. It was previously
known as "High Sierra File System" and is called "hsfs" on other
Unix systems. The so-called Rock-Ridge extensions which allow for
long Unix filenames and symbolic links are also supported by this
driver. If you have a CD-ROM drive and want to do more with it than
just listen to audio CDs and watch its LEDs, say Y (and read
<file:Documentation/filesystems/isofs.txt> and the CD-ROM-HOWTO,
available from <>), thereby
enlarging your kernel by about 27 KB; otherwise say N.
To compile this file system support as a module, choose M here: the
module will be called isofs.
config JOLIET
bool "Microsoft Joliet CDROM extensions"
depends on ISO9660_FS
select NLS
Joliet is a Microsoft extension for the ISO 9660 CD-ROM file system
which allows for long filenames in unicode format (unicode is the
new 16 bit character code, successor to ASCII, which encodes the
characters of almost all languages of the world; see
<> for more information). Say Y here if you
want to be able to read Joliet CD-ROMs under Linux.
config ZISOFS
bool "Transparent decompression extension"
depends on ISO9660_FS
This is a Linux-specific extension to RockRidge which lets you store
data in compressed form on a CD-ROM and have it transparently
decompressed when the CD-ROM is accessed. See
<> for the tools
necessary to create such a filesystem. Say Y here if you want to be
able to read such compressed CD-ROMs.