2 # File system configuration
9 source "fs/ext2/Kconfig"
10 source "fs/ext3/Kconfig"
11 source "fs/ext4/Kconfig"
16 depends on EXT2_FS_XIP
19 source "fs/jbd/Kconfig"
20 source "fs/jbd2/Kconfig"
23 # Meta block cache for Extended Attributes (ext2/ext3/ext4)
25 default y if EXT2_FS=y && EXT2_FS_XATTR
26 default y if EXT3_FS=y && EXT3_FS_XATTR
27 default y if EXT4_FS=y && EXT4_FS_XATTR
28 default m if EXT2_FS_XATTR || EXT3_FS_XATTR || EXT4_FS_XATTR
31 tristate "Reiserfs support"
33 Stores not just filenames but the files themselves in a balanced
34 tree. Uses journalling.
36 Balanced trees are more efficient than traditional file system
37 architectural foundations.
39 In general, ReiserFS is as fast as ext2, but is very efficient with
40 large directories and small files. Additional patches are needed
41 for NFS and quotas, please see <http://www.namesys.com/> for links.
43 It is more easily extended to have features currently found in
44 database and keyword search systems than block allocation based file
45 systems are. The next version will be so extended, and will support
46 plugins consistent with our motto ``It takes more than a license to
47 make source code open.''
49 Read <http://www.namesys.com/> to learn more about reiserfs.
51 Sponsored by Threshold Networks, Emusic.com, and Bigstorage.com.
53 If you like it, you can pay us to add new features to it that you
54 need, buy a support contract, or pay us to port it to another OS.
57 bool "Enable reiserfs debug mode"
58 depends on REISERFS_FS
60 If you set this to Y, then ReiserFS will perform every check it can
61 possibly imagine of its internal consistency throughout its
62 operation. It will also go substantially slower. More than once we
63 have forgotten that this was on, and then gone despondent over the
64 latest benchmarks.:-) Use of this option allows our team to go all
65 out in checking for consistency when debugging without fear of its
66 effect on end users. If you are on the verge of sending in a bug
67 report, say Y and you might get a useful error message. Almost
68 everyone should say N.
70 config REISERFS_PROC_INFO
71 bool "Stats in /proc/fs/reiserfs"
72 depends on REISERFS_FS && PROC_FS
74 Create under /proc/fs/reiserfs a hierarchy of files, displaying
75 various ReiserFS statistics and internal data at the expense of
76 making your kernel or module slightly larger (+8 KB). This also
77 increases the amount of kernel memory required for each mount.
78 Almost everyone but ReiserFS developers and people fine-tuning
79 reiserfs or tracing problems should say N.
81 config REISERFS_FS_XATTR
82 bool "ReiserFS extended attributes"
83 depends on REISERFS_FS
85 Extended attributes are name:value pairs associated with inodes by
86 the kernel or by users (see the attr(5) manual page, or visit
87 <http://acl.bestbits.at/> for details).
91 config REISERFS_FS_POSIX_ACL
92 bool "ReiserFS POSIX Access Control Lists"
93 depends on REISERFS_FS_XATTR
96 Posix Access Control Lists (ACLs) support permissions for users and
97 groups beyond the owner/group/world scheme.
99 To learn more about Access Control Lists, visit the Posix ACLs for
100 Linux website <http://acl.bestbits.at/>.
102 If you don't know what Access Control Lists are, say N
104 config REISERFS_FS_SECURITY
105 bool "ReiserFS Security Labels"
106 depends on REISERFS_FS_XATTR
108 Security labels support alternative access control models
109 implemented by security modules like SELinux. This option
110 enables an extended attribute handler for file security
111 labels in the ReiserFS filesystem.
113 If you are not using a security module that requires using
114 extended attributes for file security labels, say N.
117 tristate "JFS filesystem support"
120 This is a port of IBM's Journaled Filesystem . More information is
121 available in the file <file:Documentation/filesystems/jfs.txt>.
123 If you do not intend to use the JFS filesystem, say N.
126 bool "JFS POSIX Access Control Lists"
130 Posix Access Control Lists (ACLs) support permissions for users and
131 groups beyond the owner/group/world scheme.
133 To learn more about Access Control Lists, visit the Posix ACLs for
134 Linux website <http://acl.bestbits.at/>.
136 If you don't know what Access Control Lists are, say N
139 bool "JFS Security Labels"
142 Security labels support alternative access control models
143 implemented by security modules like SELinux. This option
144 enables an extended attribute handler for file security
145 labels in the jfs filesystem.
147 If you are not using a security module that requires using
148 extended attributes for file security labels, say N.
154 If you are experiencing any problems with the JFS filesystem, say
155 Y here. This will result in additional debugging messages to be
156 written to the system log. Under normal circumstances, this
157 results in very little overhead.
159 config JFS_STATISTICS
160 bool "JFS statistics"
163 Enabling this option will cause statistics from the JFS file system
164 to be made available to the user in the /proc/fs/jfs/ directory.
167 # Posix ACL utility routines (for now, only ext2/ext3/jfs/reiserfs/nfs4)
169 # NOTE: you can implement Posix ACLs without these helpers (XFS does).
170 # Never use this symbol for ifdefs.
176 bool "Enable POSIX file locking API" if EMBEDDED
179 This option enables standard file locking support, required
180 for filesystems like NFS and for the flock() system
181 call. Disabling this option saves about 11k.
183 source "fs/xfs/Kconfig"
184 source "fs/gfs2/Kconfig"
187 tristate "OCFS2 file system support"
188 depends on NET && SYSFS
195 OCFS2 is a general purpose extent based shared disk cluster file
196 system with many similarities to ext3. It supports 64 bit inode
197 numbers, and has automatically extending metadata groups which may
198 also make it attractive for non-clustered use.
200 You'll want to install the ocfs2-tools package in order to at least
203 Project web page: http://oss.oracle.com/projects/ocfs2
204 Tools web page: http://oss.oracle.com/projects/ocfs2-tools
205 OCFS2 mailing lists: http://oss.oracle.com/projects/ocfs2/mailman/
207 For more information on OCFS2, see the file
208 <file:Documentation/filesystems/ocfs2.txt>.
211 tristate "O2CB Kernelspace Clustering"
215 OCFS2 includes a simple kernelspace clustering package, the OCFS2
216 Cluster Base. It only requires a very small userspace component
217 to configure it. This comes with the standard ocfs2-tools package.
218 O2CB is limited to maintaining a cluster for OCFS2 file systems.
219 It cannot manage any other cluster applications.
221 It is always safe to say Y here, as the clustering method is
224 config OCFS2_FS_USERSPACE_CLUSTER
225 tristate "OCFS2 Userspace Clustering"
226 depends on OCFS2_FS && DLM
229 This option will allow OCFS2 to use userspace clustering services
230 in conjunction with the DLM in fs/dlm. If you are using a
231 userspace cluster manager, say Y here.
233 It is safe to say Y, as the clustering method is run-time
236 config OCFS2_FS_STATS
237 bool "OCFS2 statistics"
241 This option allows some fs statistics to be captured. Enabling
242 this option may increase the memory consumption.
244 config OCFS2_DEBUG_MASKLOG
245 bool "OCFS2 logging support"
249 The ocfs2 filesystem has an extensive logging system. The system
250 allows selection of events to log via files in /sys/o2cb/logmask/.
251 This option will enlarge your kernel, but it allows debugging of
252 ocfs2 filesystem issues.
254 config OCFS2_DEBUG_FS
255 bool "OCFS2 expensive checks"
259 This option will enable expensive consistency checks. Enable
260 this option for debugging only as it is likely to decrease
261 performance of the filesystem.
263 config OCFS2_FS_POSIX_ACL
264 bool "OCFS2 POSIX Access Control Lists"
269 Posix Access Control Lists (ACLs) support permissions for users and
270 groups beyond the owner/group/world scheme.
273 tristate "Btrfs filesystem (EXPERIMENTAL) Unstable disk format"
274 depends on EXPERIMENTAL
279 Btrfs is a new filesystem with extents, writable snapshotting,
280 support for multiple devices and many more features.
282 Btrfs is highly experimental, and THE DISK FORMAT IS NOT YET
283 FINALIZED. You should say N here unless you are interested in
284 testing Btrfs with non-critical data.
286 To compile this file system support as a module, choose M here. The
287 module will be called btrfs.
293 source "fs/notify/Kconfig"
298 If you say Y here, you will be able to set per user limits for disk
299 usage (also called disk quotas). Currently, it works for the
300 ext2, ext3, and reiserfs file system. ext3 also supports journalled
301 quotas for which you don't need to run quotacheck(8) after an unclean
303 For further details, read the Quota mini-HOWTO, available from
304 <http://www.tldp.org/docs.html#howto>, or the documentation provided
305 with the quota tools. Probably the quota support is only useful for
306 multi user systems. If unsure, say N.
308 config QUOTA_NETLINK_INTERFACE
309 bool "Report quota messages through netlink interface"
310 depends on QUOTA && NET
312 If you say Y here, quota warnings (about exceeding softlimit, reaching
313 hardlimit, etc.) will be reported through netlink interface. If unsure,
316 config PRINT_QUOTA_WARNING
317 bool "Print quota warnings to console (OBSOLETE)"
321 If you say Y here, quota warnings (about exceeding softlimit, reaching
322 hardlimit, etc.) will be printed to the process' controlling terminal.
323 Note that this behavior is currently deprecated and may go away in
324 future. Please use notification via netlink socket instead.
326 # Generic support for tree structured quota files. Seleted when needed.
331 tristate "Old quota format support"
334 This quota format was (is) used by kernels earlier than 2.4.22. If
335 you have quota working and you don't want to convert to new quota
339 tristate "Quota format v2 support"
343 This quota format allows using quotas with 32-bit UIDs/GIDs. If you
344 need this functionality say Y here.
348 depends on XFS_QUOTA || QUOTA
352 tristate "Kernel automounter support"
354 The automounter is a tool to automatically mount remote file systems
355 on demand. This implementation is partially kernel-based to reduce
356 overhead in the already-mounted case; this is unlike the BSD
357 automounter (amd), which is a pure user space daemon.
359 To use the automounter you need the user-space tools from the autofs
360 package; you can find the location in <file:Documentation/Changes>.
361 You also want to answer Y to "NFS file system support", below.
363 If you want to use the newer version of the automounter with more
364 features, say N here and say Y to "Kernel automounter v4 support",
367 To compile this support as a module, choose M here: the module will be
370 If you are not a part of a fairly large, distributed network, you
371 probably do not need an automounter, and can say N here.
374 tristate "Kernel automounter version 4 support (also supports v3)"
376 The automounter is a tool to automatically mount remote file systems
377 on demand. This implementation is partially kernel-based to reduce
378 overhead in the already-mounted case; this is unlike the BSD
379 automounter (amd), which is a pure user space daemon.
381 To use the automounter you need the user-space tools from
382 <ftp://ftp.kernel.org/pub/linux/daemons/autofs/v4/>; you also
383 want to answer Y to "NFS file system support", below.
385 To compile this support as a module, choose M here: the module will be
386 called autofs4. You will need to add "alias autofs autofs4" to your
387 modules configuration file.
389 If you are not a part of a fairly large, distributed network or
390 don't have a laptop which needs to dynamically reconfigure to the
391 local network, you probably do not need an automounter, and can say
395 tristate "FUSE (Filesystem in Userspace) support"
397 With FUSE it is possible to implement a fully functional filesystem
398 in a userspace program.
400 There's also companion library: libfuse. This library along with
401 utilities is available from the FUSE homepage:
402 <http://fuse.sourceforge.net/>
404 See <file:Documentation/filesystems/fuse.txt> for more information.
405 See <file:Documentation/Changes> for needed library/utility version.
407 If you want to develop a userspace FS, or if you want to use
408 a filesystem based on FUSE, answer Y or M.
415 menu "CD-ROM/DVD Filesystems"
418 tristate "ISO 9660 CDROM file system support"
420 This is the standard file system used on CD-ROMs. It was previously
421 known as "High Sierra File System" and is called "hsfs" on other
422 Unix systems. The so-called Rock-Ridge extensions which allow for
423 long Unix filenames and symbolic links are also supported by this
424 driver. If you have a CD-ROM drive and want to do more with it than
425 just listen to audio CDs and watch its LEDs, say Y (and read
426 <file:Documentation/filesystems/isofs.txt> and the CD-ROM-HOWTO,
427 available from <http://www.tldp.org/docs.html#howto>), thereby
428 enlarging your kernel by about 27 KB; otherwise say N.
430 To compile this file system support as a module, choose M here: the
431 module will be called isofs.
434 bool "Microsoft Joliet CDROM extensions"
435 depends on ISO9660_FS
438 Joliet is a Microsoft extension for the ISO 9660 CD-ROM file system
439 which allows for long filenames in unicode format (unicode is the
440 new 16 bit character code, successor to ASCII, which encodes the
441 characters of almost all languages of the world; see
442 <http://www.unicode.org/> for more information). Say Y here if you
443 want to be able to read Joliet CD-ROMs under Linux.
446 bool "Transparent decompression extension"
447 depends on ISO9660_FS
450 This is a Linux-specific extension to RockRidge which lets you store
451 data in compressed form on a CD-ROM and have it transparently
452 decompressed when the CD-ROM is accessed. See
453 <http://www.kernel.org/pub/linux/utils/fs/zisofs/> for the tools
454 necessary to create such a filesystem. Say Y here if you want to be
455 able to read such compressed CD-ROMs.
458 tristate "UDF file system support"
461 This is the new file system used on some CD-ROMs and DVDs. Say Y if
462 you intend to mount DVD discs or CDRW's written in packet mode, or
463 if written to by other UDF utilities, such as DirectCD.
464 Please read <file:Documentation/filesystems/udf.txt>.
466 To compile this file system support as a module, choose M here: the
467 module will be called udf.
474 depends on (UDF_FS=m && NLS) || (UDF_FS=y && NLS=y)
480 menu "DOS/FAT/NT Filesystems"
486 If you want to use one of the FAT-based file systems (the MS-DOS and
487 VFAT (Windows 95) file systems), then you must say Y or M here
488 to include FAT support. You will then be able to mount partitions or
489 diskettes with FAT-based file systems and transparently access the
490 files on them, i.e. MSDOS files will look and behave just like all
493 This FAT support is not a file system in itself, it only provides
494 the foundation for the other file systems. You will have to say Y or
495 M to at least one of "MSDOS fs support" or "VFAT fs support" in
496 order to make use of it.
498 Another way to read and write MSDOS floppies and hard drive
499 partitions from within Linux (but not transparently) is with the
500 mtools ("man mtools") program suite. You don't need to say Y here in
503 If you need to move large files on floppies between a DOS and a
504 Linux box, say Y here, mount the floppy under Linux with an MSDOS
505 file system and use GNU tar's M option. GNU tar is a program
506 available for Unix and DOS ("man tar" or "info tar").
508 The FAT support will enlarge your kernel by about 37 KB. If unsure,
511 To compile this as a module, choose M here: the module will be called
512 fat. Note that if you compile the FAT support as a module, you
513 cannot compile any of the FAT-based file systems into the kernel
514 -- they will have to be modules as well.
517 tristate "MSDOS fs support"
520 This allows you to mount MSDOS partitions of your hard drive (unless
521 they are compressed; to access compressed MSDOS partitions under
522 Linux, you can either use the DOS emulator DOSEMU, described in the
523 DOSEMU-HOWTO, available from
524 <http://www.tldp.org/docs.html#howto>, or try dmsdosfs in
525 <ftp://ibiblio.org/pub/Linux/system/filesystems/dosfs/>. If you
526 intend to use dosemu with a non-compressed MSDOS partition, say Y
527 here) and MSDOS floppies. This means that file access becomes
528 transparent, i.e. the MSDOS files look and behave just like all
531 If you have Windows 95 or Windows NT installed on your MSDOS
532 partitions, you should use the VFAT file system (say Y to "VFAT fs
533 support" below), or you will not be able to see the long filenames
534 generated by Windows 95 / Windows NT.
536 This option will enlarge your kernel by about 7 KB. If unsure,
537 answer Y. This will only work if you said Y to "DOS FAT fs support"
538 as well. To compile this as a module, choose M here: the module will
542 tristate "VFAT (Windows-95) fs support"
545 This option provides support for normal Windows file systems with
546 long filenames. That includes non-compressed FAT-based file systems
547 used by Windows 95, Windows 98, Windows NT 4.0, and the Unix
548 programs from the mtools package.
550 The VFAT support enlarges your kernel by about 10 KB and it only
551 works if you said Y to the "DOS FAT fs support" above. Please read
552 the file <file:Documentation/filesystems/vfat.txt> for details. If
555 To compile this as a module, choose M here: the module will be called
558 config FAT_DEFAULT_CODEPAGE
559 int "Default codepage for FAT"
560 depends on MSDOS_FS || VFAT_FS
563 This option should be set to the codepage of your FAT filesystems.
564 It can be overridden with the "codepage" mount option.
565 See <file:Documentation/filesystems/vfat.txt> for more information.
567 config FAT_DEFAULT_IOCHARSET
568 string "Default iocharset for FAT"
572 Set this to the default input/output character set you'd
573 like FAT to use. It should probably match the character set
574 that most of your FAT filesystems use, and can be overridden
575 with the "iocharset" mount option for FAT filesystems.
576 Note that "utf8" is not recommended for FAT filesystems.
577 If unsure, you shouldn't set "utf8" here.
578 See <file:Documentation/filesystems/vfat.txt> for more information.
581 tristate "NTFS file system support"
584 NTFS is the file system of Microsoft Windows NT, 2000, XP and 2003.
586 Saying Y or M here enables read support. There is partial, but
587 safe, write support available. For write support you must also
588 say Y to "NTFS write support" below.
590 There are also a number of user-space tools available, called
591 ntfsprogs. These include ntfsundelete and ntfsresize, that work
592 without NTFS support enabled in the kernel.
594 This is a rewrite from scratch of Linux NTFS support and replaced
595 the old NTFS code starting with Linux 2.5.11. A backport to
596 the Linux 2.4 kernel series is separately available as a patch
597 from the project web site.
599 For more information see <file:Documentation/filesystems/ntfs.txt>
600 and <http://www.linux-ntfs.org/>.
602 To compile this file system support as a module, choose M here: the
603 module will be called ntfs.
605 If you are not using Windows NT, 2000, XP or 2003 in addition to
606 Linux on your computer it is safe to say N.
609 bool "NTFS debugging support"
612 If you are experiencing any problems with the NTFS file system, say
613 Y here. This will result in additional consistency checks to be
614 performed by the driver as well as additional debugging messages to
615 be written to the system log. Note that debugging messages are
616 disabled by default. To enable them, supply the option debug_msgs=1
617 at the kernel command line when booting the kernel or as an option
618 to insmod when loading the ntfs module. Once the driver is active,
619 you can enable debugging messages by doing (as root):
620 echo 1 > /proc/sys/fs/ntfs-debug
621 Replacing the "1" with "0" would disable debug messages.
623 If you leave debugging messages disabled, this results in little
624 overhead, but enabling debug messages results in very significant
625 slowdown of the system.
627 When reporting bugs, please try to have available a full dump of
628 debugging messages while the misbehaviour was occurring.
631 bool "NTFS write support"
634 This enables the partial, but safe, write support in the NTFS driver.
636 The only supported operation is overwriting existing files, without
637 changing the file length. No file or directory creation, deletion or
638 renaming is possible. Note only non-resident files can be written to
639 so you may find that some very small files (<500 bytes or so) cannot
642 While we cannot guarantee that it will not damage any data, we have
643 so far not received a single report where the driver would have
644 damaged someones data so we assume it is perfectly safe to use.
646 Note: While write support is safe in this version (a rewrite from
647 scratch of the NTFS support), it should be noted that the old NTFS
648 write support, included in Linux 2.5.10 and before (since 1997),
651 This is currently useful with TopologiLinux. TopologiLinux is run
652 on top of any DOS/Microsoft Windows system without partitioning your
653 hard disk. Unlike other Linux distributions TopologiLinux does not
654 need its own partition. For more information see
655 <http://topologi-linux.sourceforge.net/>
657 It is perfectly safe to say N here.
662 menu "Pseudo filesystems"
664 source "fs/proc/Kconfig"
667 bool "sysfs file system support" if EMBEDDED
670 The sysfs filesystem is a virtual filesystem that the kernel uses to
671 export internal kernel objects, their attributes, and their
672 relationships to one another.
674 Users can use sysfs to ascertain useful information about the running
675 kernel, such as the devices the kernel has discovered on each bus and
676 which driver each is bound to. sysfs can also be used to tune devices
677 and other kernel subsystems.
679 Some system agents rely on the information in sysfs to operate.
680 /sbin/hotplug uses device and object attributes in sysfs to assist in
681 delegating policy decisions, like persistently naming devices.
683 sysfs is currently used by the block subsystem to mount the root
684 partition. If sysfs is disabled you must specify the boot device on
685 the kernel boot command line via its major and minor numbers. For
686 example, "root=03:01" for /dev/hda1.
688 Designers of embedded systems may wish to say N here to conserve space.
691 bool "Virtual memory file system support (former shm fs)"
693 Tmpfs is a file system which keeps all files in virtual memory.
695 Everything in tmpfs is temporary in the sense that no files will be
696 created on your hard drive. The files live in memory and swap
697 space. If you unmount a tmpfs instance, everything stored therein is
700 See <file:Documentation/filesystems/tmpfs.txt> for details.
702 config TMPFS_POSIX_ACL
703 bool "Tmpfs POSIX Access Control Lists"
707 POSIX Access Control Lists (ACLs) support permissions for users and
708 groups beyond the owner/group/world scheme.
710 To learn more about Access Control Lists, visit the POSIX ACLs for
711 Linux website <http://acl.bestbits.at/>.
713 If you don't know what Access Control Lists are, say N.
716 bool "HugeTLB file system support"
717 depends on X86 || IA64 || PPC64 || SPARC64 || (SUPERH && MMU) || \
718 (S390 && 64BIT) || BROKEN
720 hugetlbfs is a filesystem backing for HugeTLB pages, based on
721 ramfs. For architectures that support it, say Y here and read
722 <file:Documentation/vm/hugetlbpage.txt> for details.
730 tristate "Userspace-driven configuration filesystem"
733 configfs is a ram-based filesystem that provides the converse
734 of sysfs's functionality. Where sysfs is a filesystem-based
735 view of kernel objects, configfs is a filesystem-based manager
736 of kernel objects, or config_items.
738 Both sysfs and configfs can and should exist together on the
739 same system. One is not a replacement for the other.
743 menuconfig MISC_FILESYSTEMS
744 bool "Miscellaneous filesystems"
747 Say Y here to get to see options for various miscellaneous
748 filesystems, such as filesystems that came from other
751 This option alone does not add any kernel code.
753 If you say N, all options in this submenu will be skipped and
754 disabled; if unsure, say Y here.
759 tristate "ADFS file system support (EXPERIMENTAL)"
760 depends on BLOCK && EXPERIMENTAL
762 The Acorn Disc Filing System is the standard file system of the
763 RiscOS operating system which runs on Acorn's ARM-based Risc PC
764 systems and the Acorn Archimedes range of machines. If you say Y
765 here, Linux will be able to read from ADFS partitions on hard drives
766 and from ADFS-formatted floppy discs. If you also want to be able to
767 write to those devices, say Y to "ADFS write support" below.
769 The ADFS partition should be the first partition (i.e.,
770 /dev/[hs]d?1) on each of your drives. Please read the file
771 <file:Documentation/filesystems/adfs.txt> for further details.
773 To compile this code as a module, choose M here: the module will be
779 bool "ADFS write support (DANGEROUS)"
782 If you say Y here, you will be able to write to ADFS partitions on
783 hard drives and ADFS-formatted floppy disks. This is experimental
784 codes, so if you're unsure, say N.
787 tristate "Amiga FFS file system support (EXPERIMENTAL)"
788 depends on BLOCK && EXPERIMENTAL
790 The Fast File System (FFS) is the common file system used on hard
791 disks by Amiga(tm) systems since AmigaOS Version 1.3 (34.20). Say Y
792 if you want to be able to read and write files from and to an Amiga
793 FFS partition on your hard drive. Amiga floppies however cannot be
794 read with this driver due to an incompatibility of the floppy
795 controller used in an Amiga and the standard floppy controller in
796 PCs and workstations. Read <file:Documentation/filesystems/affs.txt>
797 and <file:fs/affs/Changes>.
799 With this driver you can also mount disk files used by Bernd
800 Schmidt's Un*X Amiga Emulator
801 (<http://www.freiburg.linux.de/~uae/>).
802 If you want to do this, you will also need to say Y or M to "Loop
803 device support", above.
805 To compile this file system support as a module, choose M here: the
806 module will be called affs. If unsure, say N.
809 tristate "eCrypt filesystem layer support (EXPERIMENTAL)"
810 depends on EXPERIMENTAL && KEYS && CRYPTO && NET
812 Encrypted filesystem that operates on the VFS layer. See
813 <file:Documentation/filesystems/ecryptfs.txt> to learn more about
814 eCryptfs. Userspace components are required and can be
815 obtained from <http://ecryptfs.sf.net>.
817 To compile this file system support as a module, choose M here: the
818 module will be called ecryptfs.
821 tristate "Apple Macintosh file system support (EXPERIMENTAL)"
822 depends on BLOCK && EXPERIMENTAL
825 If you say Y here, you will be able to mount Macintosh-formatted
826 floppy disks and hard drive partitions with full read-write access.
827 Please read <file:Documentation/filesystems/hfs.txt> to learn about
828 the available mount options.
830 To compile this file system support as a module, choose M here: the
831 module will be called hfs.
834 tristate "Apple Extended HFS file system support"
839 If you say Y here, you will be able to mount extended format
840 Macintosh-formatted hard drive partitions with full read-write access.
842 This file system is often called HFS+ and was introduced with
843 MacOS 8. It includes all Mac specific filesystem data such as
844 data forks and creator codes, but it also has several UNIX
845 style features such as file ownership and permissions.
848 tristate "BeOS file system (BeFS) support (read only) (EXPERIMENTAL)"
849 depends on BLOCK && EXPERIMENTAL
852 The BeOS File System (BeFS) is the native file system of Be, Inc's
853 BeOS. Notable features include support for arbitrary attributes
854 on files and directories, and database-like indices on selected
855 attributes. (Also note that this driver doesn't make those features
856 available at this time). It is a 64 bit filesystem, so it supports
857 extremely large volumes and files.
859 If you use this filesystem, you should also say Y to at least one
860 of the NLS (native language support) options below.
862 If you don't know what this is about, say N.
864 To compile this as a module, choose M here: the module will be
871 If you say Y here, you can use the 'debug' mount option to enable
872 debugging output from the driver.
875 tristate "BFS file system support (EXPERIMENTAL)"
876 depends on BLOCK && EXPERIMENTAL
878 Boot File System (BFS) is a file system used under SCO UnixWare to
879 allow the bootloader access to the kernel image and other important
880 files during the boot process. It is usually mounted under /stand
881 and corresponds to the slice marked as "STAND" in the UnixWare
882 partition. You should say Y if you want to read or write the files
883 on your /stand slice from within Linux. You then also need to say Y
884 to "UnixWare slices support", below. More information about the BFS
885 file system is contained in the file
886 <file:Documentation/filesystems/bfs.txt>.
888 If you don't know what this is about, say N.
890 To compile this as a module, choose M here: the module will be called
891 bfs. Note that the file system of your root partition (the one
892 containing the directory /) cannot be compiled as a module.
897 tristate "EFS file system support (read only) (EXPERIMENTAL)"
898 depends on BLOCK && EXPERIMENTAL
900 EFS is an older file system used for non-ISO9660 CD-ROMs and hard
901 disk partitions by SGI's IRIX operating system (IRIX 6.0 and newer
902 uses the XFS file system for hard disk partitions however).
904 This implementation only offers read-only access. If you don't know
905 what all this is about, it's safe to say N. For more information
906 about EFS see its home page at <http://aeschi.ch.eu.org/efs/>.
908 To compile the EFS file system support as a module, choose M here: the
909 module will be called efs.
911 source "fs/jffs2/Kconfig"
912 # UBIFS File system configuration
913 source "fs/ubifs/Kconfig"
916 tristate "Compressed ROM file system support (cramfs)"
920 Saying Y here includes support for CramFs (Compressed ROM File
921 System). CramFs is designed to be a simple, small, and compressed
922 file system for ROM based embedded systems. CramFs is read-only,
923 limited to 256MB file systems (with 16MB files), and doesn't support
924 16/32 bits uid/gid, hard links and timestamps.
926 See <file:Documentation/filesystems/cramfs.txt> and
927 <file:fs/cramfs/README> for further information.
929 To compile this as a module, choose M here: the module will be called
930 cramfs. Note that the root file system (the one containing the
931 directory /) cannot be compiled as a module.
936 tristate "FreeVxFS file system support (VERITAS VxFS(TM) compatible)"
939 FreeVxFS is a file system driver that support the VERITAS VxFS(TM)
940 file system format. VERITAS VxFS(TM) is the standard file system
941 of SCO UnixWare (and possibly others) and optionally available
942 for Sunsoft Solaris, HP-UX and many other operating systems.
943 Currently only readonly access is supported.
945 NOTE: the file system type as used by mount(1), mount(2) and
946 fstab(5) is 'vxfs' as it describes the file system format, not
949 To compile this as a module, choose M here: the module will be
950 called freevxfs. If unsure, say N.
953 tristate "Minix file system support"
956 Minix is a simple operating system used in many classes about OS's.
957 The minix file system (method to organize files on a hard disk
958 partition or a floppy disk) was the original file system for Linux,
959 but has been superseded by the second extended file system ext2fs.
960 You don't want to use the minix file system on your hard disk
961 because of certain built-in restrictions, but it is sometimes found
962 on older Linux floppy disks. This option will enlarge your kernel
963 by about 28 KB. If unsure, say N.
965 To compile this file system support as a module, choose M here: the
966 module will be called minix. Note that the file system of your root
967 partition (the one containing the directory /) cannot be compiled as
971 tristate "SonicBlue Optimized MPEG File System support"
975 This is the proprietary file system used by the Rio Karma music
976 player and ReplayTV DVR. Despite the name, this filesystem is not
977 more efficient than a standard FS for MPEG files, in fact likely
978 the opposite is true. Say Y if you have either of these devices
979 and wish to mount its disk.
981 To compile this file system support as a module, choose M here: the
982 module will be called omfs. If unsure, say N.
985 tristate "OS/2 HPFS file system support"
988 OS/2 is IBM's operating system for PC's, the same as Warp, and HPFS
989 is the file system used for organizing files on OS/2 hard disk
990 partitions. Say Y if you want to be able to read files from and
991 write files to an OS/2 HPFS partition on your hard drive. OS/2
992 floppies however are in regular MSDOS format, so you don't need this
993 option in order to be able to read them. Read
994 <file:Documentation/filesystems/hpfs.txt>.
996 To compile this file system support as a module, choose M here: the
997 module will be called hpfs. If unsure, say N.
1001 tristate "QNX4 file system support (read only)"
1004 This is the file system used by the real-time operating systems
1005 QNX 4 and QNX 6 (the latter is also called QNX RTP).
1006 Further information is available at <http://www.qnx.com/>.
1007 Say Y if you intend to mount QNX hard disks or floppies.
1008 Unless you say Y to "QNX4FS read-write support" below, you will
1009 only be able to read these file systems.
1011 To compile this file system support as a module, choose M here: the
1012 module will be called qnx4.
1014 If you don't know whether you need it, then you don't need it:
1018 bool "QNX4FS write support (DANGEROUS)"
1019 depends on QNX4FS_FS && EXPERIMENTAL && BROKEN
1021 Say Y if you want to test write support for QNX4 file systems.
1023 It's currently broken, so for now:
1027 tristate "ROM file system support"
1030 This is a very small read-only file system mainly intended for
1031 initial ram disks of installation disks, but it could be used for
1032 other read-only media as well. Read
1033 <file:Documentation/filesystems/romfs.txt> for details.
1035 To compile this file system support as a module, choose M here: the
1036 module will be called romfs. Note that the file system of your
1037 root partition (the one containing the directory /) cannot be a
1040 If you don't know whether you need it, then you don't need it:
1045 tristate "System V/Xenix/V7/Coherent file system support"
1048 SCO, Xenix and Coherent are commercial Unix systems for Intel
1049 machines, and Version 7 was used on the DEC PDP-11. Saying Y
1050 here would allow you to read from their floppies and hard disk
1053 If you have floppies or hard disk partitions like that, it is likely
1054 that they contain binaries from those other Unix systems; in order
1055 to run these binaries, you will want to install linux-abi which is
1056 a set of kernel modules that lets you run SCO, Xenix, Wyse,
1057 UnixWare, Dell Unix and System V programs under Linux. It is
1058 available via FTP (user: ftp) from
1059 <ftp://ftp.openlinux.org/pub/people/hch/linux-abi/>).
1060 NOTE: that will work only for binaries from Intel-based systems;
1061 PDP ones will have to wait until somebody ports Linux to -11 ;-)
1063 If you only intend to mount files from some other Unix over the
1064 network using NFS, you don't need the System V file system support
1065 (but you need NFS file system support obviously).
1067 Note that this option is generally not needed for floppies, since a
1068 good portable way to transport files and directories between unixes
1069 (and even other operating systems) is given by the tar program ("man
1070 tar" or preferably "info tar"). Note also that this option has
1071 nothing whatsoever to do with the option "System V IPC". Read about
1072 the System V file system in
1073 <file:Documentation/filesystems/sysv-fs.txt>.
1074 Saying Y here will enlarge your kernel by about 27 KB.
1076 To compile this as a module, choose M here: the module will be called
1079 If you haven't heard about all of this before, it's safe to say N.
1083 tristate "UFS file system support (read only)"
1086 BSD and derivate versions of Unix (such as SunOS, FreeBSD, NetBSD,
1087 OpenBSD and NeXTstep) use a file system called UFS. Some System V
1088 Unixes can create and mount hard disk partitions and diskettes using
1089 this file system as well. Saying Y here will allow you to read from
1090 these partitions; if you also want to write to them, say Y to the
1091 experimental "UFS file system write support", below. Please read the
1092 file <file:Documentation/filesystems/ufs.txt> for more information.
1094 The recently released UFS2 variant (used in FreeBSD 5.x) is
1095 READ-ONLY supported.
1097 Note that this option is generally not needed for floppies, since a
1098 good portable way to transport files and directories between unixes
1099 (and even other operating systems) is given by the tar program ("man
1100 tar" or preferably "info tar").
1102 When accessing NeXTstep files, you may need to convert them from the
1103 NeXT character set to the Latin1 character set; use the program
1104 recode ("info recode") for this purpose.
1106 To compile the UFS file system support as a module, choose M here: the
1107 module will be called ufs.
1109 If you haven't heard about all of this before, it's safe to say N.
1112 bool "UFS file system write support (DANGEROUS)"
1113 depends on UFS_FS && EXPERIMENTAL
1115 Say Y here if you want to try writing to UFS partitions. This is
1116 experimental, so you should back up your UFS partitions beforehand.
1119 bool "UFS debugging"
1122 If you are experiencing any problems with the UFS filesystem, say
1123 Y here. This will result in _many_ additional debugging messages to be
1124 written to the system log.
1126 endif # MISC_FILESYSTEMS
1128 menuconfig NETWORK_FILESYSTEMS
1129 bool "Network File Systems"
1133 Say Y here to get to see options for network filesystems and
1134 filesystem-related networking code, such as NFS daemon and
1135 RPCSEC security modules.
1137 This option alone does not add any kernel code.
1139 If you say N, all options in this submenu will be skipped and
1140 disabled; if unsure, say Y here.
1142 if NETWORK_FILESYSTEMS
1145 tristate "NFS client support"
1149 select NFS_ACL_SUPPORT if NFS_V3_ACL
1151 Choose Y here if you want to access files residing on other
1152 computers using Sun's Network File System protocol. To compile
1153 this file system support as a module, choose M here: the module
1156 To mount file systems exported by NFS servers, you also need to
1157 install the user space mount.nfs command which can be found in
1158 the Linux nfs-utils package, available from http://linux-nfs.org/.
1159 Information about using the mount command is available in the
1160 mount(8) man page. More detail about the Linux NFS client
1161 implementation is available via the nfs(5) man page.
1163 Below you can choose which versions of the NFS protocol are
1164 available in the kernel to mount NFS servers. Support for NFS
1165 version 2 (RFC 1094) is always available when NFS_FS is selected.
1167 To configure a system which mounts its root file system via NFS
1168 at boot time, say Y here, select "Kernel level IP
1169 autoconfiguration" in the NETWORK menu, and select "Root file
1170 system on NFS" below. You cannot compile this file system as a
1171 module in this case.
1176 bool "NFS client support for NFS version 3"
1179 This option enables support for version 3 of the NFS protocol
1180 (RFC 1813) in the kernel's NFS client.
1185 bool "NFS client support for the NFSv3 ACL protocol extension"
1188 Some NFS servers support an auxiliary NFSv3 ACL protocol that
1189 Sun added to Solaris but never became an official part of the
1190 NFS version 3 protocol. This protocol extension allows
1191 applications on NFS clients to manipulate POSIX Access Control
1192 Lists on files residing on NFS servers. NFS servers enforce
1193 ACLs on local files whether this protocol is available or not.
1195 Choose Y here if your NFS server supports the Solaris NFSv3 ACL
1196 protocol extension and you want your NFS client to allow
1197 applications to access and modify ACLs on files on the server.
1199 Most NFS servers don't support the Solaris NFSv3 ACL protocol
1200 extension. You can choose N here or specify the "noacl" mount
1201 option to prevent your NFS client from trying to use the NFSv3
1207 bool "NFS client support for NFS version 4 (EXPERIMENTAL)"
1208 depends on NFS_FS && EXPERIMENTAL
1209 select RPCSEC_GSS_KRB5
1211 This option enables support for version 4 of the NFS protocol
1212 (RFC 3530) in the kernel's NFS client.
1214 To mount NFS servers using NFSv4, you also need to install user
1215 space programs which can be found in the Linux nfs-utils package,
1216 available from http://linux-nfs.org/.
1221 bool "Root file system on NFS"
1222 depends on NFS_FS=y && IP_PNP
1224 If you want your system to mount its root file system via NFS,
1225 choose Y here. This is common practice for managing systems
1226 without local permanent storage. For details, read
1227 <file:Documentation/filesystems/nfsroot.txt>.
1229 Most people say N here.
1232 tristate "NFS server support"
1237 select NFS_ACL_SUPPORT if NFSD_V2_ACL
1239 Choose Y here if you want to allow other computers to access
1240 files residing on this system using Sun's Network File System
1241 protocol. To compile the NFS server support as a module,
1242 choose M here: the module will be called nfsd.
1244 You may choose to use a user-space NFS server instead, in which
1245 case you can choose N here.
1247 To export local file systems using NFS, you also need to install
1248 user space programs which can be found in the Linux nfs-utils
1249 package, available from http://linux-nfs.org/. More detail about
1250 the Linux NFS server implementation is available via the
1251 exports(5) man page.
1253 Below you can choose which versions of the NFS protocol are
1254 available to clients mounting the NFS server on this system.
1255 Support for NFS version 2 (RFC 1094) is always available when
1256 CONFIG_NFSD is selected.
1265 bool "NFS server support for NFS version 3"
1268 This option enables support in your system's NFS server for
1269 version 3 of the NFS protocol (RFC 1813).
1274 bool "NFS server support for the NFSv3 ACL protocol extension"
1278 Solaris NFS servers support an auxiliary NFSv3 ACL protocol that
1279 never became an official part of the NFS version 3 protocol.
1280 This protocol extension allows applications on NFS clients to
1281 manipulate POSIX Access Control Lists on files residing on NFS
1282 servers. NFS servers enforce POSIX ACLs on local files whether
1283 this protocol is available or not.
1285 This option enables support in your system's NFS server for the
1286 NFSv3 ACL protocol extension allowing NFS clients to manipulate
1287 POSIX ACLs on files exported by your system's NFS server. NFS
1288 clients which support the Solaris NFSv3 ACL protocol can then
1289 access and modify ACLs on your NFS server.
1291 To store ACLs on your NFS server, you also need to enable ACL-
1292 related CONFIG options for your local file systems of choice.
1297 bool "NFS server support for NFS version 4 (EXPERIMENTAL)"
1298 depends on NFSD && PROC_FS && EXPERIMENTAL
1301 select RPCSEC_GSS_KRB5
1303 This option enables support in your system's NFS server for
1304 version 4 of the NFS protocol (RFC 3530).
1306 To export files using NFSv4, you need to install additional user
1307 space programs which can be found in the Linux nfs-utils package,
1308 available from http://linux-nfs.org/.
1317 depends on NFSD_V3 || NFS_V3
1323 config NFS_ACL_SUPPORT
1329 depends on NFSD || NFS_FS
1338 config SUNRPC_XPRT_RDMA
1340 depends on SUNRPC && INFINIBAND && EXPERIMENTAL
1341 default SUNRPC && INFINIBAND
1343 This option enables an RPC client transport capability that
1344 allows the NFS client to mount servers via an RDMA-enabled
1347 To compile RPC client RDMA transport support as a module,
1348 choose M here: the module will be called xprtrdma.
1352 config SUNRPC_REGISTER_V4
1353 bool "Register local RPC services via rpcbind v4 (EXPERIMENTAL)"
1354 depends on SUNRPC && EXPERIMENTAL
1357 Sun added support for registering RPC services at an IPv6
1358 address by creating two new versions of the rpcbind protocol
1361 This option enables support in the kernel RPC server for
1362 registering kernel RPC services via version 4 of the rpcbind
1363 protocol. If you enable this option, you must run a portmapper
1364 daemon that supports rpcbind protocol version 4.
1366 Serving NFS over IPv6 from knfsd (the kernel's NFS server)
1367 requires that you enable this option and use a portmapper that
1368 supports rpcbind version 4.
1370 If unsure, say N to get traditional behavior (register kernel
1371 RPC services using only rpcbind version 2). Distributions
1372 using the legacy Linux portmapper daemon must say N here.
1374 config RPCSEC_GSS_KRB5
1375 tristate "Secure RPC: Kerberos V mechanism (EXPERIMENTAL)"
1376 depends on SUNRPC && EXPERIMENTAL
1383 Choose Y here to enable Secure RPC using the Kerberos version 5
1384 GSS-API mechanism (RFC 1964).
1386 Secure RPC calls with Kerberos require an auxiliary user-space
1387 daemon which may be found in the Linux nfs-utils package
1388 available from http://linux-nfs.org/. In addition, user-space
1389 Kerberos support should be installed.
1393 config RPCSEC_GSS_SPKM3
1394 tristate "Secure RPC: SPKM3 mechanism (EXPERIMENTAL)"
1395 depends on SUNRPC && EXPERIMENTAL
1403 Choose Y here to enable Secure RPC using the SPKM3 public key
1404 GSS-API mechansim (RFC 2025).
1406 Secure RPC calls with SPKM3 require an auxiliary userspace
1407 daemon which may be found in the Linux nfs-utils package
1408 available from http://linux-nfs.org/.
1413 tristate "SMB file system support (OBSOLETE, please use CIFS)"
1417 SMB (Server Message Block) is the protocol Windows for Workgroups
1418 (WfW), Windows 95/98, Windows NT and OS/2 Lan Manager use to share
1419 files and printers over local networks. Saying Y here allows you to
1420 mount their file systems (often called "shares" in this context) and
1421 access them just like any other Unix directory. Currently, this
1422 works only if the Windows machines use TCP/IP as the underlying
1423 transport protocol, and not NetBEUI. For details, read
1424 <file:Documentation/filesystems/smbfs.txt> and the SMB-HOWTO,
1425 available from <http://www.tldp.org/docs.html#howto>.
1427 Note: if you just want your box to act as an SMB *server* and make
1428 files and printing services available to Windows clients (which need
1429 to have a TCP/IP stack), you don't need to say Y here; you can use
1430 the program SAMBA (available from <ftp://ftp.samba.org/pub/samba/>)
1433 General information about how to connect Linux, Windows machines and
1434 Macs is on the WWW at <http://www.eats.com/linux_mac_win.html>.
1436 To compile the SMB support as a module, choose M here:
1437 the module will be called smbfs. Most people say N, however.
1439 config SMB_NLS_DEFAULT
1440 bool "Use a default NLS"
1443 Enabling this will make smbfs use nls translations by default. You
1444 need to specify the local charset (CONFIG_NLS_DEFAULT) in the nls
1445 settings and you need to give the default nls for the SMB server as
1446 CONFIG_SMB_NLS_REMOTE.
1448 The nls settings can be changed at mount time, if your smbmount
1449 supports that, using the codepage and iocharset parameters.
1451 smbmount from samba 2.2.0 or later supports this.
1453 config SMB_NLS_REMOTE
1454 string "Default Remote NLS Option"
1455 depends on SMB_NLS_DEFAULT
1458 This setting allows you to specify a default value for which
1459 codepage the server uses. If this field is left blank no
1460 translations will be done by default. The local codepage/charset
1461 default to CONFIG_NLS_DEFAULT.
1463 The nls settings can be changed at mount time, if your smbmount
1464 supports that, using the codepage and iocharset parameters.
1466 smbmount from samba 2.2.0 or later supports this.
1468 source "fs/cifs/Kconfig"
1471 tristate "NCP file system support (to mount NetWare volumes)"
1472 depends on IPX!=n || INET
1474 NCP (NetWare Core Protocol) is a protocol that runs over IPX and is
1475 used by Novell NetWare clients to talk to file servers. It is to
1476 IPX what NFS is to TCP/IP, if that helps. Saying Y here allows you
1477 to mount NetWare file server volumes and to access them just like
1478 any other Unix directory. For details, please read the file
1479 <file:Documentation/filesystems/ncpfs.txt> in the kernel source and
1480 the IPX-HOWTO from <http://www.tldp.org/docs.html#howto>.
1482 You do not have to say Y here if you want your Linux box to act as a
1483 file *server* for Novell NetWare clients.
1485 General information about how to connect Linux, Windows machines and
1486 Macs is on the WWW at <http://www.eats.com/linux_mac_win.html>.
1488 To compile this as a module, choose M here: the module will be called
1489 ncpfs. Say N unless you are connected to a Novell network.
1491 source "fs/ncpfs/Kconfig"
1494 tristate "Coda file system support (advanced network fs)"
1497 Coda is an advanced network file system, similar to NFS in that it
1498 enables you to mount file systems of a remote server and access them
1499 with regular Unix commands as if they were sitting on your hard
1500 disk. Coda has several advantages over NFS: support for
1501 disconnected operation (e.g. for laptops), read/write server
1502 replication, security model for authentication and encryption,
1503 persistent client caches and write back caching.
1505 If you say Y here, your Linux box will be able to act as a Coda
1506 *client*. You will need user level code as well, both for the
1507 client and server. Servers are currently user level, i.e. they need
1508 no kernel support. Please read
1509 <file:Documentation/filesystems/coda.txt> and check out the Coda
1510 home page <http://www.coda.cs.cmu.edu/>.
1512 To compile the coda client support as a module, choose M here: the
1513 module will be called coda.
1516 tristate "Andrew File System support (AFS) (EXPERIMENTAL)"
1517 depends on INET && EXPERIMENTAL
1520 If you say Y here, you will get an experimental Andrew File System
1521 driver. It currently only supports unsecured read-only AFS access.
1523 See <file:Documentation/filesystems/afs.txt> for more information.
1528 bool "AFS dynamic debugging"
1531 Say Y here to make runtime controllable debugging messages appear.
1533 See <file:Documentation/filesystems/afs.txt> for more information.
1538 tristate "Plan 9 Resource Sharing Support (9P2000) (Experimental)"
1539 depends on INET && NET_9P && EXPERIMENTAL
1541 If you say Y here, you will get experimental support for
1542 Plan 9 resource sharing via the 9P2000 protocol.
1544 See <http://v9fs.sf.net> for more information.
1548 endif # NETWORK_FILESYSTEMS
1551 menu "Partition Types"
1553 source "fs/partitions/Kconfig"
1558 source "fs/nls/Kconfig"
1559 source "fs/dlm/Kconfig"