2 # File system configuration
10 tristate "Second extended fs support"
12 Ext2 is a standard Linux file system for hard disks.
14 To compile this file system support as a module, choose M here: the
15 module will be called ext2.
20 bool "Ext2 extended attributes"
23 Extended attributes are name:value pairs associated with inodes by
24 the kernel or by users (see the attr(5) manual page, or visit
25 <http://acl.bestbits.at/> for details).
29 config EXT2_FS_POSIX_ACL
30 bool "Ext2 POSIX Access Control Lists"
31 depends on EXT2_FS_XATTR
34 Posix Access Control Lists (ACLs) support permissions for users and
35 groups beyond the owner/group/world scheme.
37 To learn more about Access Control Lists, visit the Posix ACLs for
38 Linux website <http://acl.bestbits.at/>.
40 If you don't know what Access Control Lists are, say N
42 config EXT2_FS_SECURITY
43 bool "Ext2 Security Labels"
44 depends on EXT2_FS_XATTR
46 Security labels support alternative access control models
47 implemented by security modules like SELinux. This option
48 enables an extended attribute handler for file security
49 labels in the ext2 filesystem.
51 If you are not using a security module that requires using
52 extended attributes for file security labels, say N.
55 bool "Ext2 execute in place support"
56 depends on EXT2_FS && MMU
58 Execute in place can be used on memory-backed block devices. If you
59 enable this option, you can select to mount block devices which are
60 capable of this feature without using the page cache.
62 If you do not use a block device that is capable of using this,
68 depends on EXT2_FS_XIP
72 tristate "Ext3 journalling file system support"
75 This is the journalling version of the Second extended file system
76 (often called ext3), the de facto standard Linux file system
77 (method to organize files on a storage device) for hard disks.
79 The journalling code included in this driver means you do not have
80 to run e2fsck (file system checker) on your file systems after a
81 crash. The journal keeps track of any changes that were being made
82 at the time the system crashed, and can ensure that your file system
83 is consistent without the need for a lengthy check.
85 Other than adding the journal to the file system, the on-disk format
86 of ext3 is identical to ext2. It is possible to freely switch
87 between using the ext3 driver and the ext2 driver, as long as the
88 file system has been cleanly unmounted, or e2fsck is run on the file
91 To add a journal on an existing ext2 file system or change the
92 behavior of ext3 file systems, you can use the tune2fs utility ("man
93 tune2fs"). To modify attributes of files and directories on ext3
94 file systems, use chattr ("man chattr"). You need to be using
95 e2fsprogs version 1.20 or later in order to create ext3 journals
96 (available at <http://sourceforge.net/projects/e2fsprogs/>).
98 To compile this file system support as a module, choose M here: the
99 module will be called ext3.
102 bool "Ext3 extended attributes"
106 Extended attributes are name:value pairs associated with inodes by
107 the kernel or by users (see the attr(5) manual page, or visit
108 <http://acl.bestbits.at/> for details).
112 You need this for POSIX ACL support on ext3.
114 config EXT3_FS_POSIX_ACL
115 bool "Ext3 POSIX Access Control Lists"
116 depends on EXT3_FS_XATTR
119 Posix Access Control Lists (ACLs) support permissions for users and
120 groups beyond the owner/group/world scheme.
122 To learn more about Access Control Lists, visit the Posix ACLs for
123 Linux website <http://acl.bestbits.at/>.
125 If you don't know what Access Control Lists are, say N
127 config EXT3_FS_SECURITY
128 bool "Ext3 Security Labels"
129 depends on EXT3_FS_XATTR
131 Security labels support alternative access control models
132 implemented by security modules like SELinux. This option
133 enables an extended attribute handler for file security
134 labels in the ext3 filesystem.
136 If you are not using a security module that requires using
137 extended attributes for file security labels, say N.
140 tristate "The Extended 4 (ext4) filesystem"
144 This is the next generation of the ext3 filesystem.
146 Unlike the change from ext2 filesystem to ext3 filesystem,
147 the on-disk format of ext4 is not forwards compatible with
148 ext3; it is based on extent maps and it supports 48-bit
149 physical block numbers. The ext4 filesystem also supports delayed
150 allocation, persistent preallocation, high resolution time stamps,
151 and a number of other features to improve performance and speed
152 up fsck time. For more information, please see the web pages at
153 http://ext4.wiki.kernel.org.
155 The ext4 filesystem will support mounting an ext3
156 filesystem; while there will be some performance gains from
157 the delayed allocation and inode table readahead, the best
158 performance gains will require enabling ext4 features in the
159 filesystem, or formating a new filesystem as an ext4
160 filesystem initially.
162 To compile this file system support as a module, choose M here. The
163 module will be called ext4dev.
167 config EXT4DEV_COMPAT
168 bool "Enable ext4dev compatibility"
171 Starting with 2.6.28, the name of the ext4 filesystem was
172 renamed from ext4dev to ext4. Unfortunately there are some
173 legacy userspace programs (such as klibc's fstype) have
176 To enable backwards compatibility so that systems that are
177 still expecting to mount ext4 filesystems using ext4dev,
178 chose Y here. This feature will go away by 2.6.31, so
179 please arrange to get your userspace programs fixed!
182 bool "Ext4 extended attributes"
186 Extended attributes are name:value pairs associated with inodes by
187 the kernel or by users (see the attr(5) manual page, or visit
188 <http://acl.bestbits.at/> for details).
192 You need this for POSIX ACL support on ext4.
194 config EXT4_FS_POSIX_ACL
195 bool "Ext4 POSIX Access Control Lists"
196 depends on EXT4_FS_XATTR
199 POSIX Access Control Lists (ACLs) support permissions for users and
200 groups beyond the owner/group/world scheme.
202 To learn more about Access Control Lists, visit the POSIX ACLs for
203 Linux website <http://acl.bestbits.at/>.
205 If you don't know what Access Control Lists are, say N
207 config EXT4_FS_SECURITY
208 bool "Ext4 Security Labels"
209 depends on EXT4_FS_XATTR
211 Security labels support alternative access control models
212 implemented by security modules like SELinux. This option
213 enables an extended attribute handler for file security
214 labels in the ext4 filesystem.
216 If you are not using a security module that requires using
217 extended attributes for file security labels, say N.
222 This is a generic journalling layer for block devices. It is
223 currently used by the ext3 file system, but it could also be
224 used to add journal support to other file systems or block
225 devices such as RAID or LVM.
227 If you are using the ext3 file system, you need to say Y here.
228 If you are not using ext3 then you will probably want to say N.
230 To compile this device as a module, choose M here: the module will be
231 called jbd. If you are compiling ext3 into the kernel, you
232 cannot compile this code as a module.
235 bool "JBD (ext3) debugging support"
236 depends on JBD && DEBUG_FS
238 If you are using the ext3 journaled file system (or potentially any
239 other file system/device using JBD), this option allows you to
240 enable debugging output while the system is running, in order to
241 help track down any problems you are having. By default the
242 debugging output will be turned off.
244 If you select Y here, then you will be able to turn on debugging
245 with "echo N > /sys/kernel/debug/jbd/jbd-debug", where N is a
246 number between 1 and 5, the higher the number, the more debugging
247 output is generated. To turn debugging off again, do
248 "echo 0 > /sys/kernel/debug/jbd/jbd-debug".
254 This is a generic journaling layer for block devices that support
255 both 32-bit and 64-bit block numbers. It is currently used by
256 the ext4 and OCFS2 filesystems, but it could also be used to add
257 journal support to other file systems or block devices such
260 If you are using ext4 or OCFS2, you need to say Y here.
261 If you are not using ext4 or OCFS2 then you will
262 probably want to say N.
264 To compile this device as a module, choose M here. The module will be
265 called jbd2. If you are compiling ext4 or OCFS2 into the kernel,
266 you cannot compile this code as a module.
269 bool "JBD2 (ext4) debugging support"
270 depends on JBD2 && DEBUG_FS
272 If you are using the ext4 journaled file system (or
273 potentially any other filesystem/device using JBD2), this option
274 allows you to enable debugging output while the system is running,
275 in order to help track down any problems you are having.
276 By default, the debugging output will be turned off.
278 If you select Y here, then you will be able to turn on debugging
279 with "echo N > /sys/kernel/debug/jbd2/jbd2-debug", where N is a
280 number between 1 and 5. The higher the number, the more debugging
281 output is generated. To turn debugging off again, do
282 "echo 0 > /sys/kernel/debug/jbd2/jbd2-debug".
285 # Meta block cache for Extended Attributes (ext2/ext3/ext4)
287 depends on EXT2_FS_XATTR || EXT3_FS_XATTR || EXT4_FS_XATTR
288 default y if EXT2_FS=y || EXT3_FS=y || EXT4_FS=y
289 default m if EXT2_FS=m || EXT3_FS=m || EXT4_FS=m
292 tristate "Reiserfs support"
294 Stores not just filenames but the files themselves in a balanced
295 tree. Uses journalling.
297 Balanced trees are more efficient than traditional file system
298 architectural foundations.
300 In general, ReiserFS is as fast as ext2, but is very efficient with
301 large directories and small files. Additional patches are needed
302 for NFS and quotas, please see <http://www.namesys.com/> for links.
304 It is more easily extended to have features currently found in
305 database and keyword search systems than block allocation based file
306 systems are. The next version will be so extended, and will support
307 plugins consistent with our motto ``It takes more than a license to
308 make source code open.''
310 Read <http://www.namesys.com/> to learn more about reiserfs.
312 Sponsored by Threshold Networks, Emusic.com, and Bigstorage.com.
314 If you like it, you can pay us to add new features to it that you
315 need, buy a support contract, or pay us to port it to another OS.
317 config REISERFS_CHECK
318 bool "Enable reiserfs debug mode"
319 depends on REISERFS_FS
321 If you set this to Y, then ReiserFS will perform every check it can
322 possibly imagine of its internal consistency throughout its
323 operation. It will also go substantially slower. More than once we
324 have forgotten that this was on, and then gone despondent over the
325 latest benchmarks.:-) Use of this option allows our team to go all
326 out in checking for consistency when debugging without fear of its
327 effect on end users. If you are on the verge of sending in a bug
328 report, say Y and you might get a useful error message. Almost
329 everyone should say N.
331 config REISERFS_PROC_INFO
332 bool "Stats in /proc/fs/reiserfs"
333 depends on REISERFS_FS && PROC_FS
335 Create under /proc/fs/reiserfs a hierarchy of files, displaying
336 various ReiserFS statistics and internal data at the expense of
337 making your kernel or module slightly larger (+8 KB). This also
338 increases the amount of kernel memory required for each mount.
339 Almost everyone but ReiserFS developers and people fine-tuning
340 reiserfs or tracing problems should say N.
342 config REISERFS_FS_XATTR
343 bool "ReiserFS extended attributes"
344 depends on REISERFS_FS
346 Extended attributes are name:value pairs associated with inodes by
347 the kernel or by users (see the attr(5) manual page, or visit
348 <http://acl.bestbits.at/> for details).
352 config REISERFS_FS_POSIX_ACL
353 bool "ReiserFS POSIX Access Control Lists"
354 depends on REISERFS_FS_XATTR
357 Posix Access Control Lists (ACLs) support permissions for users and
358 groups beyond the owner/group/world scheme.
360 To learn more about Access Control Lists, visit the Posix ACLs for
361 Linux website <http://acl.bestbits.at/>.
363 If you don't know what Access Control Lists are, say N
365 config REISERFS_FS_SECURITY
366 bool "ReiserFS Security Labels"
367 depends on REISERFS_FS_XATTR
369 Security labels support alternative access control models
370 implemented by security modules like SELinux. This option
371 enables an extended attribute handler for file security
372 labels in the ReiserFS filesystem.
374 If you are not using a security module that requires using
375 extended attributes for file security labels, say N.
378 tristate "JFS filesystem support"
381 This is a port of IBM's Journaled Filesystem . More information is
382 available in the file <file:Documentation/filesystems/jfs.txt>.
384 If you do not intend to use the JFS filesystem, say N.
387 bool "JFS POSIX Access Control Lists"
391 Posix Access Control Lists (ACLs) support permissions for users and
392 groups beyond the owner/group/world scheme.
394 To learn more about Access Control Lists, visit the Posix ACLs for
395 Linux website <http://acl.bestbits.at/>.
397 If you don't know what Access Control Lists are, say N
400 bool "JFS Security Labels"
403 Security labels support alternative access control models
404 implemented by security modules like SELinux. This option
405 enables an extended attribute handler for file security
406 labels in the jfs filesystem.
408 If you are not using a security module that requires using
409 extended attributes for file security labels, say N.
415 If you are experiencing any problems with the JFS filesystem, say
416 Y here. This will result in additional debugging messages to be
417 written to the system log. Under normal circumstances, this
418 results in very little overhead.
420 config JFS_STATISTICS
421 bool "JFS statistics"
424 Enabling this option will cause statistics from the JFS file system
425 to be made available to the user in the /proc/fs/jfs/ directory.
428 # Posix ACL utility routines (for now, only ext2/ext3/jfs/reiserfs/nfs4)
430 # NOTE: you can implement Posix ACLs without these helpers (XFS does).
431 # Never use this symbol for ifdefs.
436 source "fs/xfs/Kconfig"
437 source "fs/gfs2/Kconfig"
440 tristate "OCFS2 file system support"
441 depends on NET && SYSFS
446 OCFS2 is a general purpose extent based shared disk cluster file
447 system with many similarities to ext3. It supports 64 bit inode
448 numbers, and has automatically extending metadata groups which may
449 also make it attractive for non-clustered use.
451 You'll want to install the ocfs2-tools package in order to at least
454 Project web page: http://oss.oracle.com/projects/ocfs2
455 Tools web page: http://oss.oracle.com/projects/ocfs2-tools
456 OCFS2 mailing lists: http://oss.oracle.com/projects/ocfs2/mailman/
458 For more information on OCFS2, see the file
459 <file:Documentation/filesystems/ocfs2.txt>.
462 tristate "O2CB Kernelspace Clustering"
466 OCFS2 includes a simple kernelspace clustering package, the OCFS2
467 Cluster Base. It only requires a very small userspace component
468 to configure it. This comes with the standard ocfs2-tools package.
469 O2CB is limited to maintaining a cluster for OCFS2 file systems.
470 It cannot manage any other cluster applications.
472 It is always safe to say Y here, as the clustering method is
475 config OCFS2_FS_USERSPACE_CLUSTER
476 tristate "OCFS2 Userspace Clustering"
477 depends on OCFS2_FS && DLM
480 This option will allow OCFS2 to use userspace clustering services
481 in conjunction with the DLM in fs/dlm. If you are using a
482 userspace cluster manager, say Y here.
484 It is safe to say Y, as the clustering method is run-time
487 config OCFS2_FS_STATS
488 bool "OCFS2 statistics"
492 This option allows some fs statistics to be captured. Enabling
493 this option may increase the memory consumption.
495 config OCFS2_DEBUG_MASKLOG
496 bool "OCFS2 logging support"
500 The ocfs2 filesystem has an extensive logging system. The system
501 allows selection of events to log via files in /sys/o2cb/logmask/.
502 This option will enlarge your kernel, but it allows debugging of
503 ocfs2 filesystem issues.
505 config OCFS2_DEBUG_FS
506 bool "OCFS2 expensive checks"
510 This option will enable expensive consistency checks. Enable
511 this option for debugging only as it is likely to decrease
512 performance of the filesystem.
514 config OCFS2_COMPAT_JBD
515 bool "Use JBD for compatibility"
520 The ocfs2 filesystem now uses JBD2 for its journalling. JBD2
521 is backwards compatible with JBD. It is safe to say N here.
522 However, if you really want to use the original JBD, say Y here.
527 bool "Dnotify support"
530 Dnotify is a directory-based per-fd file change notification system
531 that uses signals to communicate events to user-space. There exist
532 superior alternatives, but some applications may still rely on
538 bool "Inotify file change notification support"
541 Say Y here to enable inotify support. Inotify is a file change
542 notification system and a replacement for dnotify. Inotify fixes
543 numerous shortcomings in dnotify and introduces several new features
544 including multiple file events, one-shot support, and unmount
547 For more information, see <file:Documentation/filesystems/inotify.txt>
552 bool "Inotify support for userspace"
556 Say Y here to enable inotify support for userspace, including the
557 associated system calls. Inotify allows monitoring of both files and
558 directories via a single open fd. Events are read from the file
559 descriptor, which is also select()- and poll()-able.
561 For more information, see <file:Documentation/filesystems/inotify.txt>
568 If you say Y here, you will be able to set per user limits for disk
569 usage (also called disk quotas). Currently, it works for the
570 ext2, ext3, and reiserfs file system. ext3 also supports journalled
571 quotas for which you don't need to run quotacheck(8) after an unclean
573 For further details, read the Quota mini-HOWTO, available from
574 <http://www.tldp.org/docs.html#howto>, or the documentation provided
575 with the quota tools. Probably the quota support is only useful for
576 multi user systems. If unsure, say N.
578 config QUOTA_NETLINK_INTERFACE
579 bool "Report quota messages through netlink interface"
580 depends on QUOTA && NET
582 If you say Y here, quota warnings (about exceeding softlimit, reaching
583 hardlimit, etc.) will be reported through netlink interface. If unsure,
586 config PRINT_QUOTA_WARNING
587 bool "Print quota warnings to console (OBSOLETE)"
591 If you say Y here, quota warnings (about exceeding softlimit, reaching
592 hardlimit, etc.) will be printed to the process' controlling terminal.
593 Note that this behavior is currently deprecated and may go away in
594 future. Please use notification via netlink socket instead.
597 tristate "Old quota format support"
600 This quota format was (is) used by kernels earlier than 2.4.22. If
601 you have quota working and you don't want to convert to new quota
605 tristate "Quota format v2 support"
608 This quota format allows using quotas with 32-bit UIDs/GIDs. If you
609 need this functionality say Y here.
613 depends on XFS_QUOTA || QUOTA
617 tristate "Kernel automounter support"
619 The automounter is a tool to automatically mount remote file systems
620 on demand. This implementation is partially kernel-based to reduce
621 overhead in the already-mounted case; this is unlike the BSD
622 automounter (amd), which is a pure user space daemon.
624 To use the automounter you need the user-space tools from the autofs
625 package; you can find the location in <file:Documentation/Changes>.
626 You also want to answer Y to "NFS file system support", below.
628 If you want to use the newer version of the automounter with more
629 features, say N here and say Y to "Kernel automounter v4 support",
632 To compile this support as a module, choose M here: the module will be
635 If you are not a part of a fairly large, distributed network, you
636 probably do not need an automounter, and can say N here.
639 tristate "Kernel automounter version 4 support (also supports v3)"
641 The automounter is a tool to automatically mount remote file systems
642 on demand. This implementation is partially kernel-based to reduce
643 overhead in the already-mounted case; this is unlike the BSD
644 automounter (amd), which is a pure user space daemon.
646 To use the automounter you need the user-space tools from
647 <ftp://ftp.kernel.org/pub/linux/daemons/autofs/v4/>; you also
648 want to answer Y to "NFS file system support", below.
650 To compile this support as a module, choose M here: the module will be
651 called autofs4. You will need to add "alias autofs autofs4" to your
652 modules configuration file.
654 If you are not a part of a fairly large, distributed network or
655 don't have a laptop which needs to dynamically reconfigure to the
656 local network, you probably do not need an automounter, and can say
660 tristate "Filesystem in Userspace support"
662 With FUSE it is possible to implement a fully functional filesystem
663 in a userspace program.
665 There's also companion library: libfuse. This library along with
666 utilities is available from the FUSE homepage:
667 <http://fuse.sourceforge.net/>
669 See <file:Documentation/filesystems/fuse.txt> for more information.
670 See <file:Documentation/Changes> for needed library/utility version.
672 If you want to develop a userspace FS, or if you want to use
673 a filesystem based on FUSE, answer Y or M.
680 menu "CD-ROM/DVD Filesystems"
683 tristate "ISO 9660 CDROM file system support"
685 This is the standard file system used on CD-ROMs. It was previously
686 known as "High Sierra File System" and is called "hsfs" on other
687 Unix systems. The so-called Rock-Ridge extensions which allow for
688 long Unix filenames and symbolic links are also supported by this
689 driver. If you have a CD-ROM drive and want to do more with it than
690 just listen to audio CDs and watch its LEDs, say Y (and read
691 <file:Documentation/filesystems/isofs.txt> and the CD-ROM-HOWTO,
692 available from <http://www.tldp.org/docs.html#howto>), thereby
693 enlarging your kernel by about 27 KB; otherwise say N.
695 To compile this file system support as a module, choose M here: the
696 module will be called isofs.
699 bool "Microsoft Joliet CDROM extensions"
700 depends on ISO9660_FS
703 Joliet is a Microsoft extension for the ISO 9660 CD-ROM file system
704 which allows for long filenames in unicode format (unicode is the
705 new 16 bit character code, successor to ASCII, which encodes the
706 characters of almost all languages of the world; see
707 <http://www.unicode.org/> for more information). Say Y here if you
708 want to be able to read Joliet CD-ROMs under Linux.
711 bool "Transparent decompression extension"
712 depends on ISO9660_FS
715 This is a Linux-specific extension to RockRidge which lets you store
716 data in compressed form on a CD-ROM and have it transparently
717 decompressed when the CD-ROM is accessed. See
718 <http://www.kernel.org/pub/linux/utils/fs/zisofs/> for the tools
719 necessary to create such a filesystem. Say Y here if you want to be
720 able to read such compressed CD-ROMs.
723 tristate "UDF file system support"
726 This is the new file system used on some CD-ROMs and DVDs. Say Y if
727 you intend to mount DVD discs or CDRW's written in packet mode, or
728 if written to by other UDF utilities, such as DirectCD.
729 Please read <file:Documentation/filesystems/udf.txt>.
731 To compile this file system support as a module, choose M here: the
732 module will be called udf.
739 depends on (UDF_FS=m && NLS) || (UDF_FS=y && NLS=y)
745 menu "DOS/FAT/NT Filesystems"
751 If you want to use one of the FAT-based file systems (the MS-DOS and
752 VFAT (Windows 95) file systems), then you must say Y or M here
753 to include FAT support. You will then be able to mount partitions or
754 diskettes with FAT-based file systems and transparently access the
755 files on them, i.e. MSDOS files will look and behave just like all
758 This FAT support is not a file system in itself, it only provides
759 the foundation for the other file systems. You will have to say Y or
760 M to at least one of "MSDOS fs support" or "VFAT fs support" in
761 order to make use of it.
763 Another way to read and write MSDOS floppies and hard drive
764 partitions from within Linux (but not transparently) is with the
765 mtools ("man mtools") program suite. You don't need to say Y here in
768 If you need to move large files on floppies between a DOS and a
769 Linux box, say Y here, mount the floppy under Linux with an MSDOS
770 file system and use GNU tar's M option. GNU tar is a program
771 available for Unix and DOS ("man tar" or "info tar").
773 The FAT support will enlarge your kernel by about 37 KB. If unsure,
776 To compile this as a module, choose M here: the module will be called
777 fat. Note that if you compile the FAT support as a module, you
778 cannot compile any of the FAT-based file systems into the kernel
779 -- they will have to be modules as well.
782 tristate "MSDOS fs support"
785 This allows you to mount MSDOS partitions of your hard drive (unless
786 they are compressed; to access compressed MSDOS partitions under
787 Linux, you can either use the DOS emulator DOSEMU, described in the
788 DOSEMU-HOWTO, available from
789 <http://www.tldp.org/docs.html#howto>, or try dmsdosfs in
790 <ftp://ibiblio.org/pub/Linux/system/filesystems/dosfs/>. If you
791 intend to use dosemu with a non-compressed MSDOS partition, say Y
792 here) and MSDOS floppies. This means that file access becomes
793 transparent, i.e. the MSDOS files look and behave just like all
796 If you have Windows 95 or Windows NT installed on your MSDOS
797 partitions, you should use the VFAT file system (say Y to "VFAT fs
798 support" below), or you will not be able to see the long filenames
799 generated by Windows 95 / Windows NT.
801 This option will enlarge your kernel by about 7 KB. If unsure,
802 answer Y. This will only work if you said Y to "DOS FAT fs support"
803 as well. To compile this as a module, choose M here: the module will
807 tristate "VFAT (Windows-95) fs support"
810 This option provides support for normal Windows file systems with
811 long filenames. That includes non-compressed FAT-based file systems
812 used by Windows 95, Windows 98, Windows NT 4.0, and the Unix
813 programs from the mtools package.
815 The VFAT support enlarges your kernel by about 10 KB and it only
816 works if you said Y to the "DOS FAT fs support" above. Please read
817 the file <file:Documentation/filesystems/vfat.txt> for details. If
820 To compile this as a module, choose M here: the module will be called
823 config FAT_DEFAULT_CODEPAGE
824 int "Default codepage for FAT"
825 depends on MSDOS_FS || VFAT_FS
828 This option should be set to the codepage of your FAT filesystems.
829 It can be overridden with the "codepage" mount option.
830 See <file:Documentation/filesystems/vfat.txt> for more information.
832 config FAT_DEFAULT_IOCHARSET
833 string "Default iocharset for FAT"
837 Set this to the default input/output character set you'd
838 like FAT to use. It should probably match the character set
839 that most of your FAT filesystems use, and can be overridden
840 with the "iocharset" mount option for FAT filesystems.
841 Note that "utf8" is not recommended for FAT filesystems.
842 If unsure, you shouldn't set "utf8" here.
843 See <file:Documentation/filesystems/vfat.txt> for more information.
846 tristate "NTFS file system support"
849 NTFS is the file system of Microsoft Windows NT, 2000, XP and 2003.
851 Saying Y or M here enables read support. There is partial, but
852 safe, write support available. For write support you must also
853 say Y to "NTFS write support" below.
855 There are also a number of user-space tools available, called
856 ntfsprogs. These include ntfsundelete and ntfsresize, that work
857 without NTFS support enabled in the kernel.
859 This is a rewrite from scratch of Linux NTFS support and replaced
860 the old NTFS code starting with Linux 2.5.11. A backport to
861 the Linux 2.4 kernel series is separately available as a patch
862 from the project web site.
864 For more information see <file:Documentation/filesystems/ntfs.txt>
865 and <http://www.linux-ntfs.org/>.
867 To compile this file system support as a module, choose M here: the
868 module will be called ntfs.
870 If you are not using Windows NT, 2000, XP or 2003 in addition to
871 Linux on your computer it is safe to say N.
874 bool "NTFS debugging support"
877 If you are experiencing any problems with the NTFS file system, say
878 Y here. This will result in additional consistency checks to be
879 performed by the driver as well as additional debugging messages to
880 be written to the system log. Note that debugging messages are
881 disabled by default. To enable them, supply the option debug_msgs=1
882 at the kernel command line when booting the kernel or as an option
883 to insmod when loading the ntfs module. Once the driver is active,
884 you can enable debugging messages by doing (as root):
885 echo 1 > /proc/sys/fs/ntfs-debug
886 Replacing the "1" with "0" would disable debug messages.
888 If you leave debugging messages disabled, this results in little
889 overhead, but enabling debug messages results in very significant
890 slowdown of the system.
892 When reporting bugs, please try to have available a full dump of
893 debugging messages while the misbehaviour was occurring.
896 bool "NTFS write support"
899 This enables the partial, but safe, write support in the NTFS driver.
901 The only supported operation is overwriting existing files, without
902 changing the file length. No file or directory creation, deletion or
903 renaming is possible. Note only non-resident files can be written to
904 so you may find that some very small files (<500 bytes or so) cannot
907 While we cannot guarantee that it will not damage any data, we have
908 so far not received a single report where the driver would have
909 damaged someones data so we assume it is perfectly safe to use.
911 Note: While write support is safe in this version (a rewrite from
912 scratch of the NTFS support), it should be noted that the old NTFS
913 write support, included in Linux 2.5.10 and before (since 1997),
916 This is currently useful with TopologiLinux. TopologiLinux is run
917 on top of any DOS/Microsoft Windows system without partitioning your
918 hard disk. Unlike other Linux distributions TopologiLinux does not
919 need its own partition. For more information see
920 <http://topologi-linux.sourceforge.net/>
922 It is perfectly safe to say N here.
927 menu "Pseudo filesystems"
929 source "fs/proc/Kconfig"
932 bool "sysfs file system support" if EMBEDDED
935 The sysfs filesystem is a virtual filesystem that the kernel uses to
936 export internal kernel objects, their attributes, and their
937 relationships to one another.
939 Users can use sysfs to ascertain useful information about the running
940 kernel, such as the devices the kernel has discovered on each bus and
941 which driver each is bound to. sysfs can also be used to tune devices
942 and other kernel subsystems.
944 Some system agents rely on the information in sysfs to operate.
945 /sbin/hotplug uses device and object attributes in sysfs to assist in
946 delegating policy decisions, like persistently naming devices.
948 sysfs is currently used by the block subsystem to mount the root
949 partition. If sysfs is disabled you must specify the boot device on
950 the kernel boot command line via its major and minor numbers. For
951 example, "root=03:01" for /dev/hda1.
953 Designers of embedded systems may wish to say N here to conserve space.
956 bool "Virtual memory file system support (former shm fs)"
958 Tmpfs is a file system which keeps all files in virtual memory.
960 Everything in tmpfs is temporary in the sense that no files will be
961 created on your hard drive. The files live in memory and swap
962 space. If you unmount a tmpfs instance, everything stored therein is
965 See <file:Documentation/filesystems/tmpfs.txt> for details.
967 config TMPFS_POSIX_ACL
968 bool "Tmpfs POSIX Access Control Lists"
972 POSIX Access Control Lists (ACLs) support permissions for users and
973 groups beyond the owner/group/world scheme.
975 To learn more about Access Control Lists, visit the POSIX ACLs for
976 Linux website <http://acl.bestbits.at/>.
978 If you don't know what Access Control Lists are, say N.
981 bool "HugeTLB file system support"
982 depends on X86 || IA64 || PPC64 || SPARC64 || (SUPERH && MMU) || \
983 (S390 && 64BIT) || BROKEN
985 hugetlbfs is a filesystem backing for HugeTLB pages, based on
986 ramfs. For architectures that support it, say Y here and read
987 <file:Documentation/vm/hugetlbpage.txt> for details.
995 tristate "Userspace-driven configuration filesystem"
998 configfs is a ram-based filesystem that provides the converse
999 of sysfs's functionality. Where sysfs is a filesystem-based
1000 view of kernel objects, configfs is a filesystem-based manager
1001 of kernel objects, or config_items.
1003 Both sysfs and configfs can and should exist together on the
1004 same system. One is not a replacement for the other.
1008 menu "Miscellaneous filesystems"
1011 tristate "ADFS file system support (EXPERIMENTAL)"
1012 depends on BLOCK && EXPERIMENTAL
1014 The Acorn Disc Filing System is the standard file system of the
1015 RiscOS operating system which runs on Acorn's ARM-based Risc PC
1016 systems and the Acorn Archimedes range of machines. If you say Y
1017 here, Linux will be able to read from ADFS partitions on hard drives
1018 and from ADFS-formatted floppy discs. If you also want to be able to
1019 write to those devices, say Y to "ADFS write support" below.
1021 The ADFS partition should be the first partition (i.e.,
1022 /dev/[hs]d?1) on each of your drives. Please read the file
1023 <file:Documentation/filesystems/adfs.txt> for further details.
1025 To compile this code as a module, choose M here: the module will be
1031 bool "ADFS write support (DANGEROUS)"
1034 If you say Y here, you will be able to write to ADFS partitions on
1035 hard drives and ADFS-formatted floppy disks. This is experimental
1036 codes, so if you're unsure, say N.
1039 tristate "Amiga FFS file system support (EXPERIMENTAL)"
1040 depends on BLOCK && EXPERIMENTAL
1042 The Fast File System (FFS) is the common file system used on hard
1043 disks by Amiga(tm) systems since AmigaOS Version 1.3 (34.20). Say Y
1044 if you want to be able to read and write files from and to an Amiga
1045 FFS partition on your hard drive. Amiga floppies however cannot be
1046 read with this driver due to an incompatibility of the floppy
1047 controller used in an Amiga and the standard floppy controller in
1048 PCs and workstations. Read <file:Documentation/filesystems/affs.txt>
1049 and <file:fs/affs/Changes>.
1051 With this driver you can also mount disk files used by Bernd
1052 Schmidt's Un*X Amiga Emulator
1053 (<http://www.freiburg.linux.de/~uae/>).
1054 If you want to do this, you will also need to say Y or M to "Loop
1055 device support", above.
1057 To compile this file system support as a module, choose M here: the
1058 module will be called affs. If unsure, say N.
1061 tristate "eCrypt filesystem layer support (EXPERIMENTAL)"
1062 depends on EXPERIMENTAL && KEYS && CRYPTO && NET
1064 Encrypted filesystem that operates on the VFS layer. See
1065 <file:Documentation/filesystems/ecryptfs.txt> to learn more about
1066 eCryptfs. Userspace components are required and can be
1067 obtained from <http://ecryptfs.sf.net>.
1069 To compile this file system support as a module, choose M here: the
1070 module will be called ecryptfs.
1073 tristate "Apple Macintosh file system support (EXPERIMENTAL)"
1074 depends on BLOCK && EXPERIMENTAL
1077 If you say Y here, you will be able to mount Macintosh-formatted
1078 floppy disks and hard drive partitions with full read-write access.
1079 Please read <file:Documentation/filesystems/hfs.txt> to learn about
1080 the available mount options.
1082 To compile this file system support as a module, choose M here: the
1083 module will be called hfs.
1086 tristate "Apple Extended HFS file system support"
1091 If you say Y here, you will be able to mount extended format
1092 Macintosh-formatted hard drive partitions with full read-write access.
1094 This file system is often called HFS+ and was introduced with
1095 MacOS 8. It includes all Mac specific filesystem data such as
1096 data forks and creator codes, but it also has several UNIX
1097 style features such as file ownership and permissions.
1100 tristate "BeOS file system (BeFS) support (read only) (EXPERIMENTAL)"
1101 depends on BLOCK && EXPERIMENTAL
1104 The BeOS File System (BeFS) is the native file system of Be, Inc's
1105 BeOS. Notable features include support for arbitrary attributes
1106 on files and directories, and database-like indices on selected
1107 attributes. (Also note that this driver doesn't make those features
1108 available at this time). It is a 64 bit filesystem, so it supports
1109 extremely large volumes and files.
1111 If you use this filesystem, you should also say Y to at least one
1112 of the NLS (native language support) options below.
1114 If you don't know what this is about, say N.
1116 To compile this as a module, choose M here: the module will be
1123 If you say Y here, you can use the 'debug' mount option to enable
1124 debugging output from the driver.
1127 tristate "BFS file system support (EXPERIMENTAL)"
1128 depends on BLOCK && EXPERIMENTAL
1130 Boot File System (BFS) is a file system used under SCO UnixWare to
1131 allow the bootloader access to the kernel image and other important
1132 files during the boot process. It is usually mounted under /stand
1133 and corresponds to the slice marked as "STAND" in the UnixWare
1134 partition. You should say Y if you want to read or write the files
1135 on your /stand slice from within Linux. You then also need to say Y
1136 to "UnixWare slices support", below. More information about the BFS
1137 file system is contained in the file
1138 <file:Documentation/filesystems/bfs.txt>.
1140 If you don't know what this is about, say N.
1142 To compile this as a module, choose M here: the module will be called
1143 bfs. Note that the file system of your root partition (the one
1144 containing the directory /) cannot be compiled as a module.
1149 tristate "EFS file system support (read only) (EXPERIMENTAL)"
1150 depends on BLOCK && EXPERIMENTAL
1152 EFS is an older file system used for non-ISO9660 CD-ROMs and hard
1153 disk partitions by SGI's IRIX operating system (IRIX 6.0 and newer
1154 uses the XFS file system for hard disk partitions however).
1156 This implementation only offers read-only access. If you don't know
1157 what all this is about, it's safe to say N. For more information
1158 about EFS see its home page at <http://aeschi.ch.eu.org/efs/>.
1160 To compile the EFS file system support as a module, choose M here: the
1161 module will be called efs.
1164 tristate "Journalling Flash File System v2 (JFFS2) support"
1168 JFFS2 is the second generation of the Journalling Flash File System
1169 for use on diskless embedded devices. It provides improved wear
1170 levelling, compression and support for hard links. You cannot use
1171 this on normal block devices, only on 'MTD' devices.
1173 Further information on the design and implementation of JFFS2 is
1174 available at <http://sources.redhat.com/jffs2/>.
1176 config JFFS2_FS_DEBUG
1177 int "JFFS2 debugging verbosity (0 = quiet, 2 = noisy)"
1181 This controls the amount of debugging messages produced by the JFFS2
1182 code. Set it to zero for use in production systems. For evaluation,
1183 testing and debugging, it's advisable to set it to one. This will
1184 enable a few assertions and will print debugging messages at the
1185 KERN_DEBUG loglevel, where they won't normally be visible. Level 2
1186 is unlikely to be useful - it enables extra debugging in certain
1187 areas which at one point needed debugging, but when the bugs were
1188 located and fixed, the detailed messages were relegated to level 2.
1190 If reporting bugs, please try to have available a full dump of the
1191 messages at debug level 1 while the misbehaviour was occurring.
1193 config JFFS2_FS_WRITEBUFFER
1194 bool "JFFS2 write-buffering support"
1198 This enables the write-buffering support in JFFS2.
1200 This functionality is required to support JFFS2 on the following
1201 types of flash devices:
1203 - NOR flash with transparent ECC
1206 config JFFS2_FS_WBUF_VERIFY
1207 bool "Verify JFFS2 write-buffer reads"
1208 depends on JFFS2_FS_WRITEBUFFER
1211 This causes JFFS2 to read back every page written through the
1212 write-buffer, and check for errors.
1214 config JFFS2_SUMMARY
1215 bool "JFFS2 summary support (EXPERIMENTAL)"
1216 depends on JFFS2_FS && EXPERIMENTAL
1219 This feature makes it possible to use summary information
1220 for faster filesystem mount.
1222 The summary information can be inserted into a filesystem image
1223 by the utility 'sumtool'.
1227 config JFFS2_FS_XATTR
1228 bool "JFFS2 XATTR support (EXPERIMENTAL)"
1229 depends on JFFS2_FS && EXPERIMENTAL
1232 Extended attributes are name:value pairs associated with inodes by
1233 the kernel or by users (see the attr(5) manual page, or visit
1234 <http://acl.bestbits.at/> for details).
1238 config JFFS2_FS_POSIX_ACL
1239 bool "JFFS2 POSIX Access Control Lists"
1240 depends on JFFS2_FS_XATTR
1244 Posix Access Control Lists (ACLs) support permissions for users and
1245 groups beyond the owner/group/world scheme.
1247 To learn more about Access Control Lists, visit the Posix ACLs for
1248 Linux website <http://acl.bestbits.at/>.
1250 If you don't know what Access Control Lists are, say N
1252 config JFFS2_FS_SECURITY
1253 bool "JFFS2 Security Labels"
1254 depends on JFFS2_FS_XATTR
1257 Security labels support alternative access control models
1258 implemented by security modules like SELinux. This option
1259 enables an extended attribute handler for file security
1260 labels in the jffs2 filesystem.
1262 If you are not using a security module that requires using
1263 extended attributes for file security labels, say N.
1265 config JFFS2_COMPRESSION_OPTIONS
1266 bool "Advanced compression options for JFFS2"
1270 Enabling this option allows you to explicitly choose which
1271 compression modules, if any, are enabled in JFFS2. Removing
1272 compressors can mean you cannot read existing file systems,
1273 and enabling experimental compressors can mean that you
1274 write a file system which cannot be read by a standard kernel.
1276 If unsure, you should _definitely_ say 'N'.
1279 bool "JFFS2 ZLIB compression support" if JFFS2_COMPRESSION_OPTIONS
1285 Zlib is designed to be a free, general-purpose, legally unencumbered,
1286 lossless data-compression library for use on virtually any computer
1287 hardware and operating system. See <http://www.gzip.org/zlib/> for
1288 further information.
1293 bool "JFFS2 LZO compression support" if JFFS2_COMPRESSION_OPTIONS
1295 select LZO_DECOMPRESS
1299 minilzo-based compression. Generally works better than Zlib.
1301 This feature was added in July, 2007. Say 'N' if you need
1302 compatibility with older bootloaders or kernels.
1305 bool "JFFS2 RTIME compression support" if JFFS2_COMPRESSION_OPTIONS
1309 Rtime does manage to recompress already-compressed data. Say 'Y' if unsure.
1312 bool "JFFS2 RUBIN compression support" if JFFS2_COMPRESSION_OPTIONS
1316 RUBINMIPS and DYNRUBIN compressors. Say 'N' if unsure.
1319 prompt "JFFS2 default compression mode" if JFFS2_COMPRESSION_OPTIONS
1320 default JFFS2_CMODE_PRIORITY
1323 You can set here the default compression mode of JFFS2 from
1324 the available compression modes. Don't touch if unsure.
1326 config JFFS2_CMODE_NONE
1327 bool "no compression"
1329 Uses no compression.
1331 config JFFS2_CMODE_PRIORITY
1334 Tries the compressors in a predefined order and chooses the first
1337 config JFFS2_CMODE_SIZE
1338 bool "size (EXPERIMENTAL)"
1340 Tries all compressors and chooses the one which has the smallest
1343 config JFFS2_CMODE_FAVOURLZO
1346 Tries all compressors and chooses the one which has the smallest
1347 result but gives some preference to LZO (which has faster
1348 decompression) at the expense of size.
1352 # UBIFS File system configuration
1353 source "fs/ubifs/Kconfig"
1356 tristate "Compressed ROM file system support (cramfs)"
1360 Saying Y here includes support for CramFs (Compressed ROM File
1361 System). CramFs is designed to be a simple, small, and compressed
1362 file system for ROM based embedded systems. CramFs is read-only,
1363 limited to 256MB file systems (with 16MB files), and doesn't support
1364 16/32 bits uid/gid, hard links and timestamps.
1366 See <file:Documentation/filesystems/cramfs.txt> and
1367 <file:fs/cramfs/README> for further information.
1369 To compile this as a module, choose M here: the module will be called
1370 cramfs. Note that the root file system (the one containing the
1371 directory /) cannot be compiled as a module.
1376 tristate "FreeVxFS file system support (VERITAS VxFS(TM) compatible)"
1379 FreeVxFS is a file system driver that support the VERITAS VxFS(TM)
1380 file system format. VERITAS VxFS(TM) is the standard file system
1381 of SCO UnixWare (and possibly others) and optionally available
1382 for Sunsoft Solaris, HP-UX and many other operating systems.
1383 Currently only readonly access is supported.
1385 NOTE: the file system type as used by mount(1), mount(2) and
1386 fstab(5) is 'vxfs' as it describes the file system format, not
1389 To compile this as a module, choose M here: the module will be
1390 called freevxfs. If unsure, say N.
1393 tristate "Minix file system support"
1396 Minix is a simple operating system used in many classes about OS's.
1397 The minix file system (method to organize files on a hard disk
1398 partition or a floppy disk) was the original file system for Linux,
1399 but has been superseded by the second extended file system ext2fs.
1400 You don't want to use the minix file system on your hard disk
1401 because of certain built-in restrictions, but it is sometimes found
1402 on older Linux floppy disks. This option will enlarge your kernel
1403 by about 28 KB. If unsure, say N.
1405 To compile this file system support as a module, choose M here: the
1406 module will be called minix. Note that the file system of your root
1407 partition (the one containing the directory /) cannot be compiled as
1411 tristate "SonicBlue Optimized MPEG File System support"
1415 This is the proprietary file system used by the Rio Karma music
1416 player and ReplayTV DVR. Despite the name, this filesystem is not
1417 more efficient than a standard FS for MPEG files, in fact likely
1418 the opposite is true. Say Y if you have either of these devices
1419 and wish to mount its disk.
1421 To compile this file system support as a module, choose M here: the
1422 module will be called omfs. If unsure, say N.
1425 tristate "OS/2 HPFS file system support"
1428 OS/2 is IBM's operating system for PC's, the same as Warp, and HPFS
1429 is the file system used for organizing files on OS/2 hard disk
1430 partitions. Say Y if you want to be able to read files from and
1431 write files to an OS/2 HPFS partition on your hard drive. OS/2
1432 floppies however are in regular MSDOS format, so you don't need this
1433 option in order to be able to read them. Read
1434 <file:Documentation/filesystems/hpfs.txt>.
1436 To compile this file system support as a module, choose M here: the
1437 module will be called hpfs. If unsure, say N.
1441 tristate "QNX4 file system support (read only)"
1444 This is the file system used by the real-time operating systems
1445 QNX 4 and QNX 6 (the latter is also called QNX RTP).
1446 Further information is available at <http://www.qnx.com/>.
1447 Say Y if you intend to mount QNX hard disks or floppies.
1448 Unless you say Y to "QNX4FS read-write support" below, you will
1449 only be able to read these file systems.
1451 To compile this file system support as a module, choose M here: the
1452 module will be called qnx4.
1454 If you don't know whether you need it, then you don't need it:
1458 bool "QNX4FS write support (DANGEROUS)"
1459 depends on QNX4FS_FS && EXPERIMENTAL && BROKEN
1461 Say Y if you want to test write support for QNX4 file systems.
1463 It's currently broken, so for now:
1467 tristate "ROM file system support"
1470 This is a very small read-only file system mainly intended for
1471 initial ram disks of installation disks, but it could be used for
1472 other read-only media as well. Read
1473 <file:Documentation/filesystems/romfs.txt> for details.
1475 To compile this file system support as a module, choose M here: the
1476 module will be called romfs. Note that the file system of your
1477 root partition (the one containing the directory /) cannot be a
1480 If you don't know whether you need it, then you don't need it:
1485 tristate "System V/Xenix/V7/Coherent file system support"
1488 SCO, Xenix and Coherent are commercial Unix systems for Intel
1489 machines, and Version 7 was used on the DEC PDP-11. Saying Y
1490 here would allow you to read from their floppies and hard disk
1493 If you have floppies or hard disk partitions like that, it is likely
1494 that they contain binaries from those other Unix systems; in order
1495 to run these binaries, you will want to install linux-abi which is
1496 a set of kernel modules that lets you run SCO, Xenix, Wyse,
1497 UnixWare, Dell Unix and System V programs under Linux. It is
1498 available via FTP (user: ftp) from
1499 <ftp://ftp.openlinux.org/pub/people/hch/linux-abi/>).
1500 NOTE: that will work only for binaries from Intel-based systems;
1501 PDP ones will have to wait until somebody ports Linux to -11 ;-)
1503 If you only intend to mount files from some other Unix over the
1504 network using NFS, you don't need the System V file system support
1505 (but you need NFS file system support obviously).
1507 Note that this option is generally not needed for floppies, since a
1508 good portable way to transport files and directories between unixes
1509 (and even other operating systems) is given by the tar program ("man
1510 tar" or preferably "info tar"). Note also that this option has
1511 nothing whatsoever to do with the option "System V IPC". Read about
1512 the System V file system in
1513 <file:Documentation/filesystems/sysv-fs.txt>.
1514 Saying Y here will enlarge your kernel by about 27 KB.
1516 To compile this as a module, choose M here: the module will be called
1519 If you haven't heard about all of this before, it's safe to say N.
1523 tristate "UFS file system support (read only)"
1526 BSD and derivate versions of Unix (such as SunOS, FreeBSD, NetBSD,
1527 OpenBSD and NeXTstep) use a file system called UFS. Some System V
1528 Unixes can create and mount hard disk partitions and diskettes using
1529 this file system as well. Saying Y here will allow you to read from
1530 these partitions; if you also want to write to them, say Y to the
1531 experimental "UFS file system write support", below. Please read the
1532 file <file:Documentation/filesystems/ufs.txt> for more information.
1534 The recently released UFS2 variant (used in FreeBSD 5.x) is
1535 READ-ONLY supported.
1537 Note that this option is generally not needed for floppies, since a
1538 good portable way to transport files and directories between unixes
1539 (and even other operating systems) is given by the tar program ("man
1540 tar" or preferably "info tar").
1542 When accessing NeXTstep files, you may need to convert them from the
1543 NeXT character set to the Latin1 character set; use the program
1544 recode ("info recode") for this purpose.
1546 To compile the UFS file system support as a module, choose M here: the
1547 module will be called ufs.
1549 If you haven't heard about all of this before, it's safe to say N.
1552 bool "UFS file system write support (DANGEROUS)"
1553 depends on UFS_FS && EXPERIMENTAL
1555 Say Y here if you want to try writing to UFS partitions. This is
1556 experimental, so you should back up your UFS partitions beforehand.
1559 bool "UFS debugging"
1562 If you are experiencing any problems with the UFS filesystem, say
1563 Y here. This will result in _many_ additional debugging messages to be
1564 written to the system log.
1568 menuconfig NETWORK_FILESYSTEMS
1569 bool "Network File Systems"
1573 Say Y here to get to see options for network filesystems and
1574 filesystem-related networking code, such as NFS daemon and
1575 RPCSEC security modules.
1577 This option alone does not add any kernel code.
1579 If you say N, all options in this submenu will be skipped and
1580 disabled; if unsure, say Y here.
1582 if NETWORK_FILESYSTEMS
1585 tristate "NFS client support"
1589 select NFS_ACL_SUPPORT if NFS_V3_ACL
1591 Choose Y here if you want to access files residing on other
1592 computers using Sun's Network File System protocol. To compile
1593 this file system support as a module, choose M here: the module
1596 To mount file systems exported by NFS servers, you also need to
1597 install the user space mount.nfs command which can be found in
1598 the Linux nfs-utils package, available from http://linux-nfs.org/.
1599 Information about using the mount command is available in the
1600 mount(8) man page. More detail about the Linux NFS client
1601 implementation is available via the nfs(5) man page.
1603 Below you can choose which versions of the NFS protocol are
1604 available in the kernel to mount NFS servers. Support for NFS
1605 version 2 (RFC 1094) is always available when NFS_FS is selected.
1607 To configure a system which mounts its root file system via NFS
1608 at boot time, say Y here, select "Kernel level IP
1609 autoconfiguration" in the NETWORK menu, and select "Root file
1610 system on NFS" below. You cannot compile this file system as a
1611 module in this case.
1616 bool "NFS client support for NFS version 3"
1619 This option enables support for version 3 of the NFS protocol
1620 (RFC 1813) in the kernel's NFS client.
1625 bool "NFS client support for the NFSv3 ACL protocol extension"
1628 Some NFS servers support an auxiliary NFSv3 ACL protocol that
1629 Sun added to Solaris but never became an official part of the
1630 NFS version 3 protocol. This protocol extension allows
1631 applications on NFS clients to manipulate POSIX Access Control
1632 Lists on files residing on NFS servers. NFS servers enforce
1633 ACLs on local files whether this protocol is available or not.
1635 Choose Y here if your NFS server supports the Solaris NFSv3 ACL
1636 protocol extension and you want your NFS client to allow
1637 applications to access and modify ACLs on files on the server.
1639 Most NFS servers don't support the Solaris NFSv3 ACL protocol
1640 extension. You can choose N here or specify the "noacl" mount
1641 option to prevent your NFS client from trying to use the NFSv3
1647 bool "NFS client support for NFS version 4 (EXPERIMENTAL)"
1648 depends on NFS_FS && EXPERIMENTAL
1649 select RPCSEC_GSS_KRB5
1651 This option enables support for version 4 of the NFS protocol
1652 (RFC 3530) in the kernel's NFS client.
1654 To mount NFS servers using NFSv4, you also need to install user
1655 space programs which can be found in the Linux nfs-utils package,
1656 available from http://linux-nfs.org/.
1661 bool "Root file system on NFS"
1662 depends on NFS_FS=y && IP_PNP
1664 If you want your system to mount its root file system via NFS,
1665 choose Y here. This is common practice for managing systems
1666 without local permanent storage. For details, read
1667 <file:Documentation/filesystems/nfsroot.txt>.
1669 Most people say N here.
1672 tristate "NFS server support"
1677 select NFS_ACL_SUPPORT if NFSD_V2_ACL
1679 Choose Y here if you want to allow other computers to access
1680 files residing on this system using Sun's Network File System
1681 protocol. To compile the NFS server support as a module,
1682 choose M here: the module will be called nfsd.
1684 You may choose to use a user-space NFS server instead, in which
1685 case you can choose N here.
1687 To export local file systems using NFS, you also need to install
1688 user space programs which can be found in the Linux nfs-utils
1689 package, available from http://linux-nfs.org/. More detail about
1690 the Linux NFS server implementation is available via the
1691 exports(5) man page.
1693 Below you can choose which versions of the NFS protocol are
1694 available to clients mounting the NFS server on this system.
1695 Support for NFS version 2 (RFC 1094) is always available when
1696 CONFIG_NFSD is selected.
1705 bool "NFS server support for NFS version 3"
1708 This option enables support in your system's NFS server for
1709 version 3 of the NFS protocol (RFC 1813).
1714 bool "NFS server support for the NFSv3 ACL protocol extension"
1718 Solaris NFS servers support an auxiliary NFSv3 ACL protocol that
1719 never became an official part of the NFS version 3 protocol.
1720 This protocol extension allows applications on NFS clients to
1721 manipulate POSIX Access Control Lists on files residing on NFS
1722 servers. NFS servers enforce POSIX ACLs on local files whether
1723 this protocol is available or not.
1725 This option enables support in your system's NFS server for the
1726 NFSv3 ACL protocol extension allowing NFS clients to manipulate
1727 POSIX ACLs on files exported by your system's NFS server. NFS
1728 clients which support the Solaris NFSv3 ACL protocol can then
1729 access and modify ACLs on your NFS server.
1731 To store ACLs on your NFS server, you also need to enable ACL-
1732 related CONFIG options for your local file systems of choice.
1737 bool "NFS server support for NFS version 4 (EXPERIMENTAL)"
1738 depends on NFSD && PROC_FS && EXPERIMENTAL
1741 select RPCSEC_GSS_KRB5
1743 This option enables support in your system's NFS server for
1744 version 4 of the NFS protocol (RFC 3530).
1746 To export files using NFSv4, you need to install additional user
1747 space programs which can be found in the Linux nfs-utils package,
1748 available from http://linux-nfs.org/.
1757 depends on NFSD_V3 || NFS_V3
1763 config NFS_ACL_SUPPORT
1769 depends on NFSD || NFS_FS
1778 config SUNRPC_XPRT_RDMA
1780 depends on SUNRPC && INFINIBAND && EXPERIMENTAL
1781 default SUNRPC && INFINIBAND
1783 This option enables an RPC client transport capability that
1784 allows the NFS client to mount servers via an RDMA-enabled
1787 To compile RPC client RDMA transport support as a module,
1788 choose M here: the module will be called xprtrdma.
1792 config RPCSEC_GSS_KRB5
1793 tristate "Secure RPC: Kerberos V mechanism (EXPERIMENTAL)"
1794 depends on SUNRPC && EXPERIMENTAL
1801 Choose Y here to enable Secure RPC using the Kerberos version 5
1802 GSS-API mechanism (RFC 1964).
1804 Secure RPC calls with Kerberos require an auxiliary user-space
1805 daemon which may be found in the Linux nfs-utils package
1806 available from http://linux-nfs.org/. In addition, user-space
1807 Kerberos support should be installed.
1811 config RPCSEC_GSS_SPKM3
1812 tristate "Secure RPC: SPKM3 mechanism (EXPERIMENTAL)"
1813 depends on SUNRPC && EXPERIMENTAL
1821 Choose Y here to enable Secure RPC using the SPKM3 public key
1822 GSS-API mechansim (RFC 2025).
1824 Secure RPC calls with SPKM3 require an auxiliary userspace
1825 daemon which may be found in the Linux nfs-utils package
1826 available from http://linux-nfs.org/.
1831 tristate "SMB file system support (OBSOLETE, please use CIFS)"
1835 SMB (Server Message Block) is the protocol Windows for Workgroups
1836 (WfW), Windows 95/98, Windows NT and OS/2 Lan Manager use to share
1837 files and printers over local networks. Saying Y here allows you to
1838 mount their file systems (often called "shares" in this context) and
1839 access them just like any other Unix directory. Currently, this
1840 works only if the Windows machines use TCP/IP as the underlying
1841 transport protocol, and not NetBEUI. For details, read
1842 <file:Documentation/filesystems/smbfs.txt> and the SMB-HOWTO,
1843 available from <http://www.tldp.org/docs.html#howto>.
1845 Note: if you just want your box to act as an SMB *server* and make
1846 files and printing services available to Windows clients (which need
1847 to have a TCP/IP stack), you don't need to say Y here; you can use
1848 the program SAMBA (available from <ftp://ftp.samba.org/pub/samba/>)
1851 General information about how to connect Linux, Windows machines and
1852 Macs is on the WWW at <http://www.eats.com/linux_mac_win.html>.
1854 To compile the SMB support as a module, choose M here:
1855 the module will be called smbfs. Most people say N, however.
1857 config SMB_NLS_DEFAULT
1858 bool "Use a default NLS"
1861 Enabling this will make smbfs use nls translations by default. You
1862 need to specify the local charset (CONFIG_NLS_DEFAULT) in the nls
1863 settings and you need to give the default nls for the SMB server as
1864 CONFIG_SMB_NLS_REMOTE.
1866 The nls settings can be changed at mount time, if your smbmount
1867 supports that, using the codepage and iocharset parameters.
1869 smbmount from samba 2.2.0 or later supports this.
1871 config SMB_NLS_REMOTE
1872 string "Default Remote NLS Option"
1873 depends on SMB_NLS_DEFAULT
1876 This setting allows you to specify a default value for which
1877 codepage the server uses. If this field is left blank no
1878 translations will be done by default. The local codepage/charset
1879 default to CONFIG_NLS_DEFAULT.
1881 The nls settings can be changed at mount time, if your smbmount
1882 supports that, using the codepage and iocharset parameters.
1884 smbmount from samba 2.2.0 or later supports this.
1887 tristate "CIFS support (advanced network filesystem, SMBFS successor)"
1891 This is the client VFS module for the Common Internet File System
1892 (CIFS) protocol which is the successor to the Server Message Block
1893 (SMB) protocol, the native file sharing mechanism for most early
1894 PC operating systems. The CIFS protocol is fully supported by
1895 file servers such as Windows 2000 (including Windows 2003, NT 4
1896 and Windows XP) as well by Samba (which provides excellent CIFS
1897 server support for Linux and many other operating systems). Limited
1898 support for OS/2 and Windows ME and similar servers is provided as
1901 The cifs module provides an advanced network file system
1902 client for mounting to CIFS compliant servers. It includes
1903 support for DFS (hierarchical name space), secure per-user
1904 session establishment via Kerberos or NTLM or NTLMv2,
1905 safe distributed caching (oplock), optional packet
1906 signing, Unicode and other internationalization improvements.
1907 If you need to mount to Samba or Windows from this machine, say Y.
1910 bool "CIFS statistics"
1913 Enabling this option will cause statistics for each server share
1914 mounted by the cifs client to be displayed in /proc/fs/cifs/Stats
1917 bool "Extended statistics"
1918 depends on CIFS_STATS
1920 Enabling this option will allow more detailed statistics on SMB
1921 request timing to be displayed in /proc/fs/cifs/DebugData and also
1922 allow optional logging of slow responses to dmesg (depending on the
1923 value of /proc/fs/cifs/cifsFYI, see fs/cifs/README for more details).
1924 These additional statistics may have a minor effect on performance
1925 and memory utilization.
1927 Unless you are a developer or are doing network performance analysis
1930 config CIFS_WEAK_PW_HASH
1931 bool "Support legacy servers which use weaker LANMAN security"
1934 Modern CIFS servers including Samba and most Windows versions
1935 (since 1997) support stronger NTLM (and even NTLMv2 and Kerberos)
1936 security mechanisms. These hash the password more securely
1937 than the mechanisms used in the older LANMAN version of the
1938 SMB protocol but LANMAN based authentication is needed to
1939 establish sessions with some old SMB servers.
1941 Enabling this option allows the cifs module to mount to older
1942 LANMAN based servers such as OS/2 and Windows 95, but such
1943 mounts may be less secure than mounts using NTLM or more recent
1944 security mechanisms if you are on a public network. Unless you
1945 have a need to access old SMB servers (and are on a private
1946 network) you probably want to say N. Even if this support
1947 is enabled in the kernel build, LANMAN authentication will not be
1948 used automatically. At runtime LANMAN mounts are disabled but
1949 can be set to required (or optional) either in
1950 /proc/fs/cifs (see fs/cifs/README for more detail) or via an
1951 option on the mount command. This support is disabled by
1952 default in order to reduce the possibility of a downgrade
1958 bool "Kerberos/SPNEGO advanced session setup"
1959 depends on CIFS && KEYS
1961 Enables an upcall mechanism for CIFS which accesses
1962 userspace helper utilities to provide SPNEGO packaged (RFC 4178)
1963 Kerberos tickets which are needed to mount to certain secure servers
1964 (for which more secure Kerberos authentication is required). If
1968 bool "CIFS extended attributes"
1971 Extended attributes are name:value pairs associated with inodes by
1972 the kernel or by users (see the attr(5) manual page, or visit
1973 <http://acl.bestbits.at/> for details). CIFS maps the name of
1974 extended attributes beginning with the user namespace prefix
1975 to SMB/CIFS EAs. EAs are stored on Windows servers without the
1976 user namespace prefix, but their names are seen by Linux cifs clients
1977 prefaced by the user namespace prefix. The system namespace
1978 (used by some filesystems to store ACLs) is not supported at
1984 bool "CIFS POSIX Extensions"
1985 depends on CIFS_XATTR
1987 Enabling this option will cause the cifs client to attempt to
1988 negotiate a newer dialect with servers, such as Samba 3.0.5
1989 or later, that optionally can handle more POSIX like (rather
1990 than Windows like) file behavior. It also enables
1991 support for POSIX ACLs (getfacl and setfacl) to servers
1992 (such as Samba 3.10 and later) which can negotiate
1993 CIFS POSIX ACL support. If unsure, say N.
1996 bool "Enable additional CIFS debugging routines"
1999 Enabling this option adds a few more debugging routines
2000 to the cifs code which slightly increases the size of
2001 the cifs module and can cause additional logging of debug
2002 messages in some error paths, slowing performance. This
2003 option can be turned off unless you are debugging
2004 cifs problems. If unsure, say N.
2006 config CIFS_EXPERIMENTAL
2007 bool "CIFS Experimental Features (EXPERIMENTAL)"
2008 depends on CIFS && EXPERIMENTAL
2010 Enables cifs features under testing. These features are
2011 experimental and currently include DFS support and directory
2012 change notification ie fcntl(F_DNOTIFY), as well as the upcall
2013 mechanism which will be used for Kerberos session negotiation
2014 and uid remapping. Some of these features also may depend on
2015 setting a value of 1 to the pseudo-file /proc/fs/cifs/Experimental
2016 (which is disabled by default). See the file fs/cifs/README
2017 for more details. If unsure, say N.
2019 config CIFS_DFS_UPCALL
2020 bool "DFS feature support (EXPERIMENTAL)"
2021 depends on CIFS_EXPERIMENTAL
2024 Enables an upcall mechanism for CIFS which contacts userspace
2025 helper utilities to provide server name resolution (host names to
2026 IP addresses) which is needed for implicit mounts of DFS junction
2027 points. If unsure, say N.
2030 tristate "NCP file system support (to mount NetWare volumes)"
2031 depends on IPX!=n || INET
2033 NCP (NetWare Core Protocol) is a protocol that runs over IPX and is
2034 used by Novell NetWare clients to talk to file servers. It is to
2035 IPX what NFS is to TCP/IP, if that helps. Saying Y here allows you
2036 to mount NetWare file server volumes and to access them just like
2037 any other Unix directory. For details, please read the file
2038 <file:Documentation/filesystems/ncpfs.txt> in the kernel source and
2039 the IPX-HOWTO from <http://www.tldp.org/docs.html#howto>.
2041 You do not have to say Y here if you want your Linux box to act as a
2042 file *server* for Novell NetWare clients.
2044 General information about how to connect Linux, Windows machines and
2045 Macs is on the WWW at <http://www.eats.com/linux_mac_win.html>.
2047 To compile this as a module, choose M here: the module will be called
2048 ncpfs. Say N unless you are connected to a Novell network.
2050 source "fs/ncpfs/Kconfig"
2053 tristate "Coda file system support (advanced network fs)"
2056 Coda is an advanced network file system, similar to NFS in that it
2057 enables you to mount file systems of a remote server and access them
2058 with regular Unix commands as if they were sitting on your hard
2059 disk. Coda has several advantages over NFS: support for
2060 disconnected operation (e.g. for laptops), read/write server
2061 replication, security model for authentication and encryption,
2062 persistent client caches and write back caching.
2064 If you say Y here, your Linux box will be able to act as a Coda
2065 *client*. You will need user level code as well, both for the
2066 client and server. Servers are currently user level, i.e. they need
2067 no kernel support. Please read
2068 <file:Documentation/filesystems/coda.txt> and check out the Coda
2069 home page <http://www.coda.cs.cmu.edu/>.
2071 To compile the coda client support as a module, choose M here: the
2072 module will be called coda.
2075 tristate "Andrew File System support (AFS) (EXPERIMENTAL)"
2076 depends on INET && EXPERIMENTAL
2079 If you say Y here, you will get an experimental Andrew File System
2080 driver. It currently only supports unsecured read-only AFS access.
2082 See <file:Documentation/filesystems/afs.txt> for more information.
2087 bool "AFS dynamic debugging"
2090 Say Y here to make runtime controllable debugging messages appear.
2092 See <file:Documentation/filesystems/afs.txt> for more information.
2097 tristate "Plan 9 Resource Sharing Support (9P2000) (Experimental)"
2098 depends on INET && NET_9P && EXPERIMENTAL
2100 If you say Y here, you will get experimental support for
2101 Plan 9 resource sharing via the 9P2000 protocol.
2103 See <http://v9fs.sf.net> for more information.
2107 endif # NETWORK_FILESYSTEMS
2110 menu "Partition Types"
2112 source "fs/partitions/Kconfig"
2117 source "fs/nls/Kconfig"
2118 source "fs/dlm/Kconfig"