xref: /linux/fs/Kconfig (revision d67b569f5f620c0fb95d5212642746b7ba9d29e4)
1#
2# File system configuration
3#
4
5menu "File systems"
6
7config EXT2_FS
8	tristate "Second extended fs support"
9	help
10	  Ext2 is a standard Linux file system for hard disks.
11
12	  To compile this file system support as a module, choose M here: the
13	  module will be called ext2.  Be aware however that the file system
14	  of your root partition (the one containing the directory /) cannot
15	  be compiled as a module, and so this could be dangerous.
16
17	  If unsure, say Y.
18
19config EXT2_FS_XATTR
20	bool "Ext2 extended attributes"
21	depends on EXT2_FS
22	help
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).
26
27	  If unsure, say N.
28
29config EXT2_FS_POSIX_ACL
30	bool "Ext2 POSIX Access Control Lists"
31	depends on EXT2_FS_XATTR
32	help
33	  Posix Access Control Lists (ACLs) support permissions for users and
34	  groups beyond the owner/group/world scheme.
35
36	  To learn more about Access Control Lists, visit the Posix ACLs for
37	  Linux website <http://acl.bestbits.at/>.
38
39	  If you don't know what Access Control Lists are, say N
40
41config EXT2_FS_SECURITY
42	bool "Ext2 Security Labels"
43	depends on EXT2_FS_XATTR
44	help
45	  Security labels support alternative access control models
46	  implemented by security modules like SELinux.  This option
47	  enables an extended attribute handler for file security
48	  labels in the ext2 filesystem.
49
50	  If you are not using a security module that requires using
51	  extended attributes for file security labels, say N.
52
53config EXT2_FS_XIP
54	bool "Ext2 execute in place support"
55	depends on EXT2_FS
56	help
57	  Execute in place can be used on memory-backed block devices. If you
58	  enable this option, you can select to mount block devices which are
59	  capable of this feature without using the page cache.
60
61	  If you do not use a block device that is capable of using this,
62	  or if unsure, say N.
63
64config FS_XIP
65# execute in place
66	bool
67	depends on EXT2_FS_XIP
68	default y
69
70config EXT3_FS
71	tristate "Ext3 journalling file system support"
72	help
73	  This is the journaling version of the Second extended file system
74	  (often called ext3), the de facto standard Linux file system
75	  (method to organize files on a storage device) for hard disks.
76
77	  The journaling code included in this driver means you do not have
78	  to run e2fsck (file system checker) on your file systems after a
79	  crash.  The journal keeps track of any changes that were being made
80	  at the time the system crashed, and can ensure that your file system
81	  is consistent without the need for a lengthy check.
82
83	  Other than adding the journal to the file system, the on-disk format
84	  of ext3 is identical to ext2.  It is possible to freely switch
85	  between using the ext3 driver and the ext2 driver, as long as the
86	  file system has been cleanly unmounted, or e2fsck is run on the file
87	  system.
88
89	  To add a journal on an existing ext2 file system or change the
90	  behavior of ext3 file systems, you can use the tune2fs utility ("man
91	  tune2fs").  To modify attributes of files and directories on ext3
92	  file systems, use chattr ("man chattr").  You need to be using
93	  e2fsprogs version 1.20 or later in order to create ext3 journals
94	  (available at <http://sourceforge.net/projects/e2fsprogs/>).
95
96	  To compile this file system support as a module, choose M here: the
97	  module will be called ext3.  Be aware however that the file system
98	  of your root partition (the one containing the directory /) cannot
99	  be compiled as a module, and so this may be dangerous.
100
101config EXT3_FS_XATTR
102	bool "Ext3 extended attributes"
103	depends on EXT3_FS
104	default y
105	help
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).
109
110	  If unsure, say N.
111
112	  You need this for POSIX ACL support on ext3.
113
114config EXT3_FS_POSIX_ACL
115	bool "Ext3 POSIX Access Control Lists"
116	depends on EXT3_FS_XATTR
117	help
118	  Posix Access Control Lists (ACLs) support permissions for users and
119	  groups beyond the owner/group/world scheme.
120
121	  To learn more about Access Control Lists, visit the Posix ACLs for
122	  Linux website <http://acl.bestbits.at/>.
123
124	  If you don't know what Access Control Lists are, say N
125
126config EXT3_FS_SECURITY
127	bool "Ext3 Security Labels"
128	depends on EXT3_FS_XATTR
129	help
130	  Security labels support alternative access control models
131	  implemented by security modules like SELinux.  This option
132	  enables an extended attribute handler for file security
133	  labels in the ext3 filesystem.
134
135	  If you are not using a security module that requires using
136	  extended attributes for file security labels, say N.
137
138config JBD
139# CONFIG_JBD could be its own option (even modular), but until there are
140# other users than ext3, we will simply make it be the same as CONFIG_EXT3_FS
141# dep_tristate '  Journal Block Device support (JBD for ext3)' CONFIG_JBD $CONFIG_EXT3_FS
142	tristate
143	default EXT3_FS
144	help
145	  This is a generic journaling layer for block devices.  It is
146	  currently used by the ext3 file system, but it could also be used to
147	  add journal support to other file systems or block devices such as
148	  RAID or LVM.
149
150	  If you are using the ext3 file system, you need to say Y here. If
151	  you are not using ext3 then you will probably want to say N.
152
153	  To compile this device as a module, choose M here: the module will be
154	  called jbd.  If you are compiling ext3 into the kernel, you cannot
155	  compile this code as a module.
156
157config JBD_DEBUG
158	bool "JBD (ext3) debugging support"
159	depends on JBD
160	help
161	  If you are using the ext3 journaled file system (or potentially any
162	  other file system/device using JBD), this option allows you to
163	  enable debugging output while the system is running, in order to
164	  help track down any problems you are having.  By default the
165	  debugging output will be turned off.
166
167	  If you select Y here, then you will be able to turn on debugging
168	  with "echo N > /proc/sys/fs/jbd-debug", where N is a number between
169	  1 and 5, the higher the number, the more debugging output is
170	  generated.  To turn debugging off again, do
171	  "echo 0 > /proc/sys/fs/jbd-debug".
172
173config FS_MBCACHE
174# Meta block cache for Extended Attributes (ext2/ext3)
175	tristate
176	depends on EXT2_FS_XATTR || EXT3_FS_XATTR
177	default y if EXT2_FS=y || EXT3_FS=y
178	default m if EXT2_FS=m || EXT3_FS=m
179
180config REISERFS_FS
181	tristate "Reiserfs support"
182	help
183	  Stores not just filenames but the files themselves in a balanced
184	  tree.  Uses journaling.
185
186	  Balanced trees are more efficient than traditional file system
187	  architectural foundations.
188
189	  In general, ReiserFS is as fast as ext2, but is very efficient with
190	  large directories and small files.  Additional patches are needed
191	  for NFS and quotas, please see <http://www.namesys.com/> for links.
192
193	  It is more easily extended to have features currently found in
194	  database and keyword search systems than block allocation based file
195	  systems are.  The next version will be so extended, and will support
196	  plugins consistent with our motto ``It takes more than a license to
197	  make source code open.''
198
199	  Read <http://www.namesys.com/> to learn more about reiserfs.
200
201	  Sponsored by Threshold Networks, Emusic.com, and Bigstorage.com.
202
203	  If you like it, you can pay us to add new features to it that you
204	  need, buy a support contract, or pay us to port it to another OS.
205
206config REISERFS_CHECK
207	bool "Enable reiserfs debug mode"
208	depends on REISERFS_FS
209	help
210	  If you set this to Y, then ReiserFS will perform every check it can
211	  possibly imagine of its internal consistency throughout its
212	  operation.  It will also go substantially slower.  More than once we
213	  have forgotten that this was on, and then gone despondent over the
214	  latest benchmarks.:-) Use of this option allows our team to go all
215	  out in checking for consistency when debugging without fear of its
216	  effect on end users.  If you are on the verge of sending in a bug
217	  report, say Y and you might get a useful error message.  Almost
218	  everyone should say N.
219
220config REISERFS_PROC_INFO
221	bool "Stats in /proc/fs/reiserfs"
222	depends on REISERFS_FS
223	help
224	  Create under /proc/fs/reiserfs a hierarchy of files, displaying
225	  various ReiserFS statistics and internal data at the expense of
226	  making your kernel or module slightly larger (+8 KB). This also
227	  increases the amount of kernel memory required for each mount.
228	  Almost everyone but ReiserFS developers and people fine-tuning
229	  reiserfs or tracing problems should say N.
230
231config REISERFS_FS_XATTR
232	bool "ReiserFS extended attributes"
233	depends on REISERFS_FS
234	help
235	  Extended attributes are name:value pairs associated with inodes by
236	  the kernel or by users (see the attr(5) manual page, or visit
237	  <http://acl.bestbits.at/> for details).
238
239	  If unsure, say N.
240
241config REISERFS_FS_POSIX_ACL
242	bool "ReiserFS POSIX Access Control Lists"
243	depends on REISERFS_FS_XATTR
244	help
245	  Posix Access Control Lists (ACLs) support permissions for users and
246	  groups beyond the owner/group/world scheme.
247
248	  To learn more about Access Control Lists, visit the Posix ACLs for
249	  Linux website <http://acl.bestbits.at/>.
250
251	  If you don't know what Access Control Lists are, say N
252
253config REISERFS_FS_SECURITY
254	bool "ReiserFS Security Labels"
255	depends on REISERFS_FS_XATTR
256	help
257	  Security labels support alternative access control models
258	  implemented by security modules like SELinux.  This option
259	  enables an extended attribute handler for file security
260	  labels in the ReiserFS filesystem.
261
262	  If you are not using a security module that requires using
263	  extended attributes for file security labels, say N.
264
265config JFS_FS
266	tristate "JFS filesystem support"
267	select NLS
268	help
269	  This is a port of IBM's Journaled Filesystem .  More information is
270	  available in the file <file:Documentation/filesystems/jfs.txt>.
271
272	  If you do not intend to use the JFS filesystem, say N.
273
274config JFS_POSIX_ACL
275	bool "JFS POSIX Access Control Lists"
276	depends on JFS_FS
277	help
278	  Posix Access Control Lists (ACLs) support permissions for users and
279	  groups beyond the owner/group/world scheme.
280
281	  To learn more about Access Control Lists, visit the Posix ACLs for
282	  Linux website <http://acl.bestbits.at/>.
283
284	  If you don't know what Access Control Lists are, say N
285
286config JFS_SECURITY
287	bool "JFS Security Labels"
288	depends on JFS_FS
289	help
290	  Security labels support alternative access control models
291	  implemented by security modules like SELinux.  This option
292	  enables an extended attribute handler for file security
293	  labels in the jfs filesystem.
294
295	  If you are not using a security module that requires using
296	  extended attributes for file security labels, say N.
297
298config JFS_DEBUG
299	bool "JFS debugging"
300	depends on JFS_FS
301	help
302	  If you are experiencing any problems with the JFS filesystem, say
303	  Y here.  This will result in additional debugging messages to be
304	  written to the system log.  Under normal circumstances, this
305	  results in very little overhead.
306
307config JFS_STATISTICS
308	bool "JFS statistics"
309	depends on JFS_FS
310	help
311	  Enabling this option will cause statistics from the JFS file system
312	  to be made available to the user in the /proc/fs/jfs/ directory.
313
314config FS_POSIX_ACL
315# Posix ACL utility routines (for now, only ext2/ext3/jfs/reiserfs)
316#
317# NOTE: you can implement Posix ACLs without these helpers (XFS does).
318# 	Never use this symbol for ifdefs.
319#
320	bool
321	depends on EXT2_FS_POSIX_ACL || EXT3_FS_POSIX_ACL || JFS_POSIX_ACL || REISERFS_FS_POSIX_ACL || NFSD_V4
322	default y
323
324source "fs/xfs/Kconfig"
325
326config MINIX_FS
327	tristate "Minix fs support"
328	help
329	  Minix is a simple operating system used in many classes about OS's.
330	  The minix file system (method to organize files on a hard disk
331	  partition or a floppy disk) was the original file system for Linux,
332	  but has been superseded by the second extended file system ext2fs.
333	  You don't want to use the minix file system on your hard disk
334	  because of certain built-in restrictions, but it is sometimes found
335	  on older Linux floppy disks.  This option will enlarge your kernel
336	  by about 28 KB. If unsure, say N.
337
338	  To compile this file system support as a module, choose M here: the
339	  module will be called minix.  Note that the file system of your root
340	  partition (the one containing the directory /) cannot be compiled as
341	  a module.
342
343config ROMFS_FS
344	tristate "ROM file system support"
345	---help---
346	  This is a very small read-only file system mainly intended for
347	  initial ram disks of installation disks, but it could be used for
348	  other read-only media as well.  Read
349	  <file:Documentation/filesystems/romfs.txt> for details.
350
351	  To compile this file system support as a module, choose M here: the
352	  module will be called romfs.  Note that the file system of your
353	  root partition (the one containing the directory /) cannot be a
354	  module.
355
356	  If you don't know whether you need it, then you don't need it:
357	  answer N.
358
359config QUOTA
360	bool "Quota support"
361	help
362	  If you say Y here, you will be able to set per user limits for disk
363	  usage (also called disk quotas). Currently, it works for the
364	  ext2, ext3, and reiserfs file system. ext3 also supports journalled
365	  quotas for which you don't need to run quotacheck(8) after an unclean
366	  shutdown. You need additional software in order to use quota support
367	  (you can download sources from
368	  <http://www.sf.net/projects/linuxquota/>). For further details, read
369	  the Quota mini-HOWTO, available from
370	  <http://www.tldp.org/docs.html#howto>, or the documentation provided
371	  with the quota tools. Probably the quota support is only useful for
372	  multi user systems. If unsure, say N.
373
374config QFMT_V1
375	tristate "Old quota format support"
376	depends on QUOTA
377	help
378	  This quota format was (is) used by kernels earlier than 2.4.22. If
379	  you have quota working and you don't want to convert to new quota
380	  format say Y here.
381
382config QFMT_V2
383	tristate "Quota format v2 support"
384	depends on QUOTA
385	help
386	  This quota format allows using quotas with 32-bit UIDs/GIDs. If you
387	  need this functionality say Y here. Note that you will need recent
388	  quota utilities (>= 3.01) for new quota format with this kernel.
389
390config QUOTACTL
391	bool
392	depends on XFS_QUOTA || QUOTA
393	default y
394
395config DNOTIFY
396	bool "Dnotify support" if EMBEDDED
397	default y
398	help
399	  Dnotify is a directory-based per-fd file change notification system
400	  that uses signals to communicate events to user-space.  There exist
401	  superior alternatives, but some applications may still rely on
402	  dnotify.
403
404	  Because of this, if unsure, say Y.
405
406config AUTOFS_FS
407	tristate "Kernel automounter support"
408	help
409	  The automounter is a tool to automatically mount remote file systems
410	  on demand. This implementation is partially kernel-based to reduce
411	  overhead in the already-mounted case; this is unlike the BSD
412	  automounter (amd), which is a pure user space daemon.
413
414	  To use the automounter you need the user-space tools from the autofs
415	  package; you can find the location in <file:Documentation/Changes>.
416	  You also want to answer Y to "NFS file system support", below.
417
418	  If you want to use the newer version of the automounter with more
419	  features, say N here and say Y to "Kernel automounter v4 support",
420	  below.
421
422	  To compile this support as a module, choose M here: the module will be
423	  called autofs.
424
425	  If you are not a part of a fairly large, distributed network, you
426	  probably do not need an automounter, and can say N here.
427
428config AUTOFS4_FS
429	tristate "Kernel automounter version 4 support (also supports v3)"
430	help
431	  The automounter is a tool to automatically mount remote file systems
432	  on demand. This implementation is partially kernel-based to reduce
433	  overhead in the already-mounted case; this is unlike the BSD
434	  automounter (amd), which is a pure user space daemon.
435
436	  To use the automounter you need the user-space tools from
437	  <ftp://ftp.kernel.org/pub/linux/daemons/autofs/v4/>; you also
438	  want to answer Y to "NFS file system support", below.
439
440	  To compile this support as a module, choose M here: the module will be
441	  called autofs4.  You will need to add "alias autofs autofs4" to your
442	  modules configuration file.
443
444	  If you are not a part of a fairly large, distributed network or
445	  don't have a laptop which needs to dynamically reconfigure to the
446	  local network, you probably do not need an automounter, and can say
447	  N here.
448
449menu "CD-ROM/DVD Filesystems"
450
451config ISO9660_FS
452	tristate "ISO 9660 CDROM file system support"
453	help
454	  This is the standard file system used on CD-ROMs.  It was previously
455	  known as "High Sierra File System" and is called "hsfs" on other
456	  Unix systems.  The so-called Rock-Ridge extensions which allow for
457	  long Unix filenames and symbolic links are also supported by this
458	  driver.  If you have a CD-ROM drive and want to do more with it than
459	  just listen to audio CDs and watch its LEDs, say Y (and read
460	  <file:Documentation/filesystems/isofs.txt> and the CD-ROM-HOWTO,
461	  available from <http://www.tldp.org/docs.html#howto>), thereby
462	  enlarging your kernel by about 27 KB; otherwise say N.
463
464	  To compile this file system support as a module, choose M here: the
465	  module will be called isofs.
466
467config JOLIET
468	bool "Microsoft Joliet CDROM extensions"
469	depends on ISO9660_FS
470	select NLS
471	help
472	  Joliet is a Microsoft extension for the ISO 9660 CD-ROM file system
473	  which allows for long filenames in unicode format (unicode is the
474	  new 16 bit character code, successor to ASCII, which encodes the
475	  characters of almost all languages of the world; see
476	  <http://www.unicode.org/> for more information).  Say Y here if you
477	  want to be able to read Joliet CD-ROMs under Linux.
478
479config ZISOFS
480	bool "Transparent decompression extension"
481	depends on ISO9660_FS
482	select ZLIB_INFLATE
483	help
484	  This is a Linux-specific extension to RockRidge which lets you store
485	  data in compressed form on a CD-ROM and have it transparently
486	  decompressed when the CD-ROM is accessed.  See
487	  <http://www.kernel.org/pub/linux/utils/fs/zisofs/> for the tools
488	  necessary to create such a filesystem.  Say Y here if you want to be
489	  able to read such compressed CD-ROMs.
490
491config ZISOFS_FS
492# for fs/nls/Config.in
493	tristate
494	depends on ZISOFS
495	default ISO9660_FS
496
497config UDF_FS
498	tristate "UDF file system support"
499	help
500	  This is the new file system used on some CD-ROMs and DVDs. Say Y if
501	  you intend to mount DVD discs or CDRW's written in packet mode, or
502	  if written to by other UDF utilities, such as DirectCD.
503	  Please read <file:Documentation/filesystems/udf.txt>.
504
505	  To compile this file system support as a module, choose M here: the
506	  module will be called udf.
507
508	  If unsure, say N.
509
510config UDF_NLS
511	bool
512	default y
513	depends on (UDF_FS=m && NLS) || (UDF_FS=y && NLS=y)
514
515endmenu
516
517menu "DOS/FAT/NT Filesystems"
518
519config FAT_FS
520	tristate
521	select NLS
522	help
523	  If you want to use one of the FAT-based file systems (the MS-DOS and
524	  VFAT (Windows 95) file systems), then you must say Y or M here
525	  to include FAT support. You will then be able to mount partitions or
526	  diskettes with FAT-based file systems and transparently access the
527	  files on them, i.e. MSDOS files will look and behave just like all
528	  other Unix files.
529
530	  This FAT support is not a file system in itself, it only provides
531	  the foundation for the other file systems. You will have to say Y or
532	  M to at least one of "MSDOS fs support" or "VFAT fs support" in
533	  order to make use of it.
534
535	  Another way to read and write MSDOS floppies and hard drive
536	  partitions from within Linux (but not transparently) is with the
537	  mtools ("man mtools") program suite. You don't need to say Y here in
538	  order to do that.
539
540	  If you need to move large files on floppies between a DOS and a
541	  Linux box, say Y here, mount the floppy under Linux with an MSDOS
542	  file system and use GNU tar's M option. GNU tar is a program
543	  available for Unix and DOS ("man tar" or "info tar").
544
545	  It is now also becoming possible to read and write compressed FAT
546	  file systems; read <file:Documentation/filesystems/fat_cvf.txt> for
547	  details.
548
549	  The FAT support will enlarge your kernel by about 37 KB. If unsure,
550	  say Y.
551
552	  To compile this as a module, choose M here: the module will be called
553	  fat.  Note that if you compile the FAT support as a module, you
554	  cannot compile any of the FAT-based file systems into the kernel
555	  -- they will have to be modules as well.
556
557config MSDOS_FS
558	tristate "MSDOS fs support"
559	select FAT_FS
560	help
561	  This allows you to mount MSDOS partitions of your hard drive (unless
562	  they are compressed; to access compressed MSDOS partitions under
563	  Linux, you can either use the DOS emulator DOSEMU, described in the
564	  DOSEMU-HOWTO, available from
565	  <http://www.tldp.org/docs.html#howto>, or try dmsdosfs in
566	  <ftp://ibiblio.org/pub/Linux/system/filesystems/dosfs/>. If you
567	  intend to use dosemu with a non-compressed MSDOS partition, say Y
568	  here) and MSDOS floppies. This means that file access becomes
569	  transparent, i.e. the MSDOS files look and behave just like all
570	  other Unix files.
571
572	  If you have Windows 95 or Windows NT installed on your MSDOS
573	  partitions, you should use the VFAT file system (say Y to "VFAT fs
574	  support" below), or you will not be able to see the long filenames
575	  generated by Windows 95 / Windows NT.
576
577	  This option will enlarge your kernel by about 7 KB. If unsure,
578	  answer Y. This will only work if you said Y to "DOS FAT fs support"
579	  as well. To compile this as a module, choose M here: the module will
580	  be called msdos.
581
582config VFAT_FS
583	tristate "VFAT (Windows-95) fs support"
584	select FAT_FS
585	help
586	  This option provides support for normal Windows file systems with
587	  long filenames.  That includes non-compressed FAT-based file systems
588	  used by Windows 95, Windows 98, Windows NT 4.0, and the Unix
589	  programs from the mtools package.
590
591	  The VFAT support enlarges your kernel by about 10 KB and it only
592	  works if you said Y to the "DOS FAT fs support" above.  Please read
593	  the file <file:Documentation/filesystems/vfat.txt> for details.  If
594	  unsure, say Y.
595
596	  To compile this as a module, choose M here: the module will be called
597	  vfat.
598
599config FAT_DEFAULT_CODEPAGE
600	int "Default codepage for FAT"
601	depends on MSDOS_FS || VFAT_FS
602	default 437
603	help
604	  This option should be set to the codepage of your FAT filesystems.
605	  It can be overridden with the "codepage" mount option.
606	  See <file:Documentation/filesystems/vfat.txt> for more information.
607
608config FAT_DEFAULT_IOCHARSET
609	string "Default iocharset for FAT"
610	depends on VFAT_FS
611	default "iso8859-1"
612	help
613	  Set this to the default input/output character set you'd
614	  like FAT to use. It should probably match the character set
615	  that most of your FAT filesystems use, and can be overridden
616	  with the "iocharset" mount option for FAT filesystems.
617	  Note that "utf8" is not recommended for FAT filesystems.
618	  If unsure, you shouldn't set "utf8" here.
619	  See <file:Documentation/filesystems/vfat.txt> for more information.
620
621config NTFS_FS
622	tristate "NTFS file system support"
623	select NLS
624	help
625	  NTFS is the file system of Microsoft Windows NT, 2000, XP and 2003.
626
627	  Saying Y or M here enables read support.  There is partial, but
628	  safe, write support available.  For write support you must also
629	  say Y to "NTFS write support" below.
630
631	  There are also a number of user-space tools available, called
632	  ntfsprogs.  These include ntfsundelete and ntfsresize, that work
633	  without NTFS support enabled in the kernel.
634
635	  This is a rewrite from scratch of Linux NTFS support and replaced
636	  the old NTFS code starting with Linux 2.5.11.  A backport to
637	  the Linux 2.4 kernel series is separately available as a patch
638	  from the project web site.
639
640	  For more information see <file:Documentation/filesystems/ntfs.txt>
641	  and <http://linux-ntfs.sourceforge.net/>.
642
643	  To compile this file system support as a module, choose M here: the
644	  module will be called ntfs.
645
646	  If you are not using Windows NT, 2000, XP or 2003 in addition to
647	  Linux on your computer it is safe to say N.
648
649config NTFS_DEBUG
650	bool "NTFS debugging support"
651	depends on NTFS_FS
652	help
653	  If you are experiencing any problems with the NTFS file system, say
654	  Y here.  This will result in additional consistency checks to be
655	  performed by the driver as well as additional debugging messages to
656	  be written to the system log.  Note that debugging messages are
657	  disabled by default.  To enable them, supply the option debug_msgs=1
658	  at the kernel command line when booting the kernel or as an option
659	  to insmod when loading the ntfs module.  Once the driver is active,
660	  you can enable debugging messages by doing (as root):
661	  echo 1 > /proc/sys/fs/ntfs-debug
662	  Replacing the "1" with "0" would disable debug messages.
663
664	  If you leave debugging messages disabled, this results in little
665	  overhead, but enabling debug messages results in very significant
666	  slowdown of the system.
667
668	  When reporting bugs, please try to have available a full dump of
669	  debugging messages while the misbehaviour was occurring.
670
671config NTFS_RW
672	bool "NTFS write support"
673	depends on NTFS_FS
674	help
675	  This enables the partial, but safe, write support in the NTFS driver.
676
677	  The only supported operation is overwriting existing files, without
678	  changing the file length.  No file or directory creation, deletion or
679	  renaming is possible.  Note only non-resident files can be written to
680	  so you may find that some very small files (<500 bytes or so) cannot
681	  be written to.
682
683	  While we cannot guarantee that it will not damage any data, we have
684	  so far not received a single report where the driver would have
685	  damaged someones data so we assume it is perfectly safe to use.
686
687	  Note:  While write support is safe in this version (a rewrite from
688	  scratch of the NTFS support), it should be noted that the old NTFS
689	  write support, included in Linux 2.5.10 and before (since 1997),
690	  is not safe.
691
692	  This is currently useful with TopologiLinux.  TopologiLinux is run
693	  on top of any DOS/Microsoft Windows system without partitioning your
694	  hard disk.  Unlike other Linux distributions TopologiLinux does not
695	  need its own partition.  For more information see
696	  <http://topologi-linux.sourceforge.net/>
697
698	  It is perfectly safe to say N here.
699
700endmenu
701
702menu "Pseudo filesystems"
703
704config PROC_FS
705	bool "/proc file system support"
706	help
707	  This is a virtual file system providing information about the status
708	  of the system. "Virtual" means that it doesn't take up any space on
709	  your hard disk: the files are created on the fly by the kernel when
710	  you try to access them. Also, you cannot read the files with older
711	  version of the program less: you need to use more or cat.
712
713	  It's totally cool; for example, "cat /proc/interrupts" gives
714	  information about what the different IRQs are used for at the moment
715	  (there is a small number of Interrupt ReQuest lines in your computer
716	  that are used by the attached devices to gain the CPU's attention --
717	  often a source of trouble if two devices are mistakenly configured
718	  to use the same IRQ). The program procinfo to display some
719	  information about your system gathered from the /proc file system.
720
721	  Before you can use the /proc file system, it has to be mounted,
722	  meaning it has to be given a location in the directory hierarchy.
723	  That location should be /proc. A command such as "mount -t proc proc
724	  /proc" or the equivalent line in /etc/fstab does the job.
725
726	  The /proc file system is explained in the file
727	  <file:Documentation/filesystems/proc.txt> and on the proc(5) manpage
728	  ("man 5 proc").
729
730	  This option will enlarge your kernel by about 67 KB. Several
731	  programs depend on this, so everyone should say Y here.
732
733config PROC_KCORE
734	bool "/proc/kcore support" if !ARM
735	depends on PROC_FS && MMU
736
737config PROC_VMCORE
738        bool "/proc/vmcore support (EXPERIMENTAL)"
739        depends on PROC_FS && EMBEDDED && EXPERIMENTAL && CRASH_DUMP
740        help
741        Exports the dump image of crashed kernel in ELF format.
742
743config SYSFS
744	bool "sysfs file system support" if EMBEDDED
745	default y
746	help
747	The sysfs filesystem is a virtual filesystem that the kernel uses to
748	export internal kernel objects, their attributes, and their
749	relationships to one another.
750
751	Users can use sysfs to ascertain useful information about the running
752	kernel, such as the devices the kernel has discovered on each bus and
753	which driver each is bound to. sysfs can also be used to tune devices
754	and other kernel subsystems.
755
756	Some system agents rely on the information in sysfs to operate.
757	/sbin/hotplug uses device and object attributes in sysfs to assist in
758	delegating policy decisions, like persistantly naming devices.
759
760	sysfs is currently used by the block subsystem to mount the root
761	partition.  If sysfs is disabled you must specify the boot device on
762	the kernel boot command line via its major and minor numbers.  For
763	example, "root=03:01" for /dev/hda1.
764
765	Designers of embedded systems may wish to say N here to conserve space.
766
767config DEVPTS_FS_XATTR
768	bool "/dev/pts Extended Attributes"
769	depends on UNIX98_PTYS
770	help
771	  Extended attributes are name:value pairs associated with inodes by
772	  the kernel or by users (see the attr(5) manual page, or visit
773	  <http://acl.bestbits.at/> for details).
774
775	  If unsure, say N.
776
777config DEVPTS_FS_SECURITY
778	bool "/dev/pts Security Labels"
779	depends on DEVPTS_FS_XATTR
780	help
781	  Security labels support alternative access control models
782	  implemented by security modules like SELinux.  This option
783	  enables an extended attribute handler for file security
784	  labels in the /dev/pts filesystem.
785
786	  If you are not using a security module that requires using
787	  extended attributes for file security labels, say N.
788
789config TMPFS
790	bool "Virtual memory file system support (former shm fs)"
791	help
792	  Tmpfs is a file system which keeps all files in virtual memory.
793
794	  Everything in tmpfs is temporary in the sense that no files will be
795	  created on your hard drive. The files live in memory and swap
796	  space. If you unmount a tmpfs instance, everything stored therein is
797	  lost.
798
799	  See <file:Documentation/filesystems/tmpfs.txt> for details.
800
801config TMPFS_XATTR
802	bool "tmpfs Extended Attributes"
803	depends on TMPFS
804	help
805	  Extended attributes are name:value pairs associated with inodes by
806	  the kernel or by users (see the attr(5) manual page, or visit
807	  <http://acl.bestbits.at/> for details).
808
809	  If unsure, say N.
810
811config TMPFS_SECURITY
812	bool "tmpfs Security Labels"
813	depends on TMPFS_XATTR
814	help
815	  Security labels support alternative access control models
816	  implemented by security modules like SELinux.  This option
817	  enables an extended attribute handler for file security
818	  labels in the tmpfs filesystem.
819	  If you are not using a security module that requires using
820	  extended attributes for file security labels, say N.
821
822config HUGETLBFS
823	bool "HugeTLB file system support"
824	depends X86 || IA64 || PPC64 || SPARC64 || SUPERH || X86_64 || BROKEN
825
826config HUGETLB_PAGE
827	def_bool HUGETLBFS
828
829config RAMFS
830	bool
831	default y
832	---help---
833	  Ramfs is a file system which keeps all files in RAM. It allows
834	  read and write access.
835
836	  It is more of an programming example than a useable file system.  If
837	  you need a file system which lives in RAM with limit checking use
838	  tmpfs.
839
840	  To compile this as a module, choose M here: the module will be called
841	  ramfs.
842
843endmenu
844
845menu "Miscellaneous filesystems"
846
847config ADFS_FS
848	tristate "ADFS file system support (EXPERIMENTAL)"
849	depends on EXPERIMENTAL
850	help
851	  The Acorn Disc Filing System is the standard file system of the
852	  RiscOS operating system which runs on Acorn's ARM-based Risc PC
853	  systems and the Acorn Archimedes range of machines. If you say Y
854	  here, Linux will be able to read from ADFS partitions on hard drives
855	  and from ADFS-formatted floppy discs. If you also want to be able to
856	  write to those devices, say Y to "ADFS write support" below.
857
858	  The ADFS partition should be the first partition (i.e.,
859	  /dev/[hs]d?1) on each of your drives. Please read the file
860	  <file:Documentation/filesystems/adfs.txt> for further details.
861
862	  To compile this code as a module, choose M here: the module will be
863	  called adfs.
864
865	  If unsure, say N.
866
867config ADFS_FS_RW
868	bool "ADFS write support (DANGEROUS)"
869	depends on ADFS_FS
870	help
871	  If you say Y here, you will be able to write to ADFS partitions on
872	  hard drives and ADFS-formatted floppy disks. This is experimental
873	  codes, so if you're unsure, say N.
874
875config AFFS_FS
876	tristate "Amiga FFS file system support (EXPERIMENTAL)"
877	depends on EXPERIMENTAL
878	help
879	  The Fast File System (FFS) is the common file system used on hard
880	  disks by Amiga(tm) systems since AmigaOS Version 1.3 (34.20).  Say Y
881	  if you want to be able to read and write files from and to an Amiga
882	  FFS partition on your hard drive.  Amiga floppies however cannot be
883	  read with this driver due to an incompatibility of the floppy
884	  controller used in an Amiga and the standard floppy controller in
885	  PCs and workstations. Read <file:Documentation/filesystems/affs.txt>
886	  and <file:fs/affs/Changes>.
887
888	  With this driver you can also mount disk files used by Bernd
889	  Schmidt's Un*X Amiga Emulator
890	  (<http://www.freiburg.linux.de/~uae/>).
891	  If you want to do this, you will also need to say Y or M to "Loop
892	  device support", above.
893
894	  To compile this file system support as a module, choose M here: the
895	  module will be called affs.  If unsure, say N.
896
897config HFS_FS
898	tristate "Apple Macintosh file system support (EXPERIMENTAL)"
899	depends on EXPERIMENTAL
900	help
901	  If you say Y here, you will be able to mount Macintosh-formatted
902	  floppy disks and hard drive partitions with full read-write access.
903	  Please read <file:fs/hfs/HFS.txt> to learn about the available mount
904	  options.
905
906	  To compile this file system support as a module, choose M here: the
907	  module will be called hfs.
908
909config HFSPLUS_FS
910	tristate "Apple Extended HFS file system support"
911	select NLS
912	select NLS_UTF8
913	help
914	  If you say Y here, you will be able to mount extended format
915	  Macintosh-formatted hard drive partitions with full read-write access.
916
917	  This file system is often called HFS+ and was introduced with
918	  MacOS 8. It includes all Mac specific filesystem data such as
919	  data forks and creator codes, but it also has several UNIX
920	  style features such as file ownership and permissions.
921
922config BEFS_FS
923	tristate "BeOS file system (BeFS) support (read only) (EXPERIMENTAL)"
924	depends on EXPERIMENTAL
925	select NLS
926	help
927	  The BeOS File System (BeFS) is the native file system of Be, Inc's
928	  BeOS. Notable features include support for arbitrary attributes
929	  on files and directories, and database-like indeces on selected
930	  attributes. (Also note that this driver doesn't make those features
931	  available at this time). It is a 64 bit filesystem, so it supports
932	  extremly large volumes and files.
933
934	  If you use this filesystem, you should also say Y to at least one
935	  of the NLS (native language support) options below.
936
937	  If you don't know what this is about, say N.
938
939	  To compile this as a module, choose M here: the module will be
940	  called befs.
941
942config BEFS_DEBUG
943	bool "Debug BeFS"
944	depends on BEFS_FS
945	help
946	  If you say Y here, you can use the 'debug' mount option to enable
947	  debugging output from the driver.
948
949config BFS_FS
950	tristate "BFS file system support (EXPERIMENTAL)"
951	depends on EXPERIMENTAL
952	help
953	  Boot File System (BFS) is a file system used under SCO UnixWare to
954	  allow the bootloader access to the kernel image and other important
955	  files during the boot process.  It is usually mounted under /stand
956	  and corresponds to the slice marked as "STAND" in the UnixWare
957	  partition.  You should say Y if you want to read or write the files
958	  on your /stand slice from within Linux.  You then also need to say Y
959	  to "UnixWare slices support", below.  More information about the BFS
960	  file system is contained in the file
961	  <file:Documentation/filesystems/bfs.txt>.
962
963	  If you don't know what this is about, say N.
964
965	  To compile this as a module, choose M here: the module will be called
966	  bfs.  Note that the file system of your root partition (the one
967	  containing the directory /) cannot be compiled as a module.
968
969
970
971config EFS_FS
972	tristate "EFS file system support (read only) (EXPERIMENTAL)"
973	depends on EXPERIMENTAL
974	help
975	  EFS is an older file system used for non-ISO9660 CD-ROMs and hard
976	  disk partitions by SGI's IRIX operating system (IRIX 6.0 and newer
977	  uses the XFS file system for hard disk partitions however).
978
979	  This implementation only offers read-only access. If you don't know
980	  what all this is about, it's safe to say N. For more information
981	  about EFS see its home page at <http://aeschi.ch.eu.org/efs/>.
982
983	  To compile the EFS file system support as a module, choose M here: the
984	  module will be called efs.
985
986config JFFS_FS
987	tristate "Journalling Flash File System (JFFS) support"
988	depends on MTD
989	help
990	  JFFS is the Journaling Flash File System developed by Axis
991	  Communications in Sweden, aimed at providing a crash/powerdown-safe
992	  file system for disk-less embedded devices. Further information is
993	  available at (<http://developer.axis.com/software/jffs/>).
994
995config JFFS_FS_VERBOSE
996	int "JFFS debugging verbosity (0 = quiet, 3 = noisy)"
997	depends on JFFS_FS
998	default "0"
999	help
1000	  Determines the verbosity level of the JFFS debugging messages.
1001
1002config JFFS_PROC_FS
1003	bool "JFFS stats available in /proc filesystem"
1004	depends on JFFS_FS && PROC_FS
1005	help
1006	  Enabling this option will cause statistics from mounted JFFS file systems
1007	  to be made available to the user in the /proc/fs/jffs/ directory.
1008
1009config JFFS2_FS
1010	tristate "Journalling Flash File System v2 (JFFS2) support"
1011	select CRC32
1012	depends on MTD
1013	help
1014	  JFFS2 is the second generation of the Journalling Flash File System
1015	  for use on diskless embedded devices. It provides improved wear
1016	  levelling, compression and support for hard links. You cannot use
1017	  this on normal block devices, only on 'MTD' devices.
1018
1019	  Further information on the design and implementation of JFFS2 is
1020	  available at <http://sources.redhat.com/jffs2/>.
1021
1022config JFFS2_FS_DEBUG
1023	int "JFFS2 debugging verbosity (0 = quiet, 2 = noisy)"
1024	depends on JFFS2_FS
1025	default "0"
1026	help
1027	  This controls the amount of debugging messages produced by the JFFS2
1028	  code. Set it to zero for use in production systems. For evaluation,
1029	  testing and debugging, it's advisable to set it to one. This will
1030	  enable a few assertions and will print debugging messages at the
1031	  KERN_DEBUG loglevel, where they won't normally be visible. Level 2
1032	  is unlikely to be useful - it enables extra debugging in certain
1033	  areas which at one point needed debugging, but when the bugs were
1034	  located and fixed, the detailed messages were relegated to level 2.
1035
1036	  If reporting bugs, please try to have available a full dump of the
1037	  messages at debug level 1 while the misbehaviour was occurring.
1038
1039config JFFS2_FS_NAND
1040	bool "JFFS2 support for NAND flash"
1041	depends on JFFS2_FS
1042	default n
1043	help
1044	  This enables the support for NAND flash in JFFS2. NAND is a newer
1045	  type of flash chip design than the traditional NOR flash, with
1046	  higher density but a handful of characteristics which make it more
1047	  interesting for the file system to use.
1048
1049	  Say 'N' unless you have NAND flash.
1050
1051config JFFS2_FS_NOR_ECC
1052        bool "JFFS2 support for ECC'd NOR flash (EXPERIMENTAL)"
1053        depends on JFFS2_FS && EXPERIMENTAL
1054        default n
1055        help
1056          This enables the experimental support for NOR flash with transparent
1057          ECC for JFFS2. This type of flash chip is not common, however it is
1058          available from ST Microelectronics.
1059
1060config JFFS2_COMPRESSION_OPTIONS
1061	bool "Advanced compression options for JFFS2"
1062	depends on JFFS2_FS
1063	default n
1064	help
1065	  Enabling this option allows you to explicitly choose which
1066	  compression modules, if any, are enabled in JFFS2. Removing
1067	  compressors and mean you cannot read existing file systems,
1068	  and enabling experimental compressors can mean that you
1069	  write a file system which cannot be read by a standard kernel.
1070
1071	  If unsure, you should _definitely_ say 'N'.
1072
1073config JFFS2_ZLIB
1074	bool "JFFS2 ZLIB compression support" if JFFS2_COMPRESSION_OPTIONS
1075	select ZLIB_INFLATE
1076	select ZLIB_DEFLATE
1077	depends on JFFS2_FS
1078	default y
1079        help
1080          Zlib is designed to be a free, general-purpose, legally unencumbered,
1081          lossless data-compression library for use on virtually any computer
1082          hardware and operating system. See <http://www.gzip.org/zlib/> for
1083          further information.
1084
1085          Say 'Y' if unsure.
1086
1087config JFFS2_RTIME
1088	bool "JFFS2 RTIME compression support" if JFFS2_COMPRESSION_OPTIONS
1089	depends on JFFS2_FS
1090	default y
1091        help
1092          Rtime does manage to recompress already-compressed data. Say 'Y' if unsure.
1093
1094config JFFS2_RUBIN
1095	bool "JFFS2 RUBIN compression support" if JFFS2_COMPRESSION_OPTIONS
1096	depends on JFFS2_FS
1097	default n
1098        help
1099          RUBINMIPS and DYNRUBIN compressors. Say 'N' if unsure.
1100
1101choice
1102        prompt "JFFS2 default compression mode" if JFFS2_COMPRESSION_OPTIONS
1103        default JFFS2_CMODE_PRIORITY
1104        depends on JFFS2_FS
1105        help
1106          You can set here the default compression mode of JFFS2 from
1107          the available compression modes. Don't touch if unsure.
1108
1109config JFFS2_CMODE_NONE
1110        bool "no compression"
1111        help
1112          Uses no compression.
1113
1114config JFFS2_CMODE_PRIORITY
1115        bool "priority"
1116        help
1117          Tries the compressors in a predefinied order and chooses the first
1118          successful one.
1119
1120config JFFS2_CMODE_SIZE
1121        bool "size (EXPERIMENTAL)"
1122        help
1123          Tries all compressors and chooses the one which has the smallest
1124          result.
1125
1126endchoice
1127
1128config CRAMFS
1129	tristate "Compressed ROM file system support (cramfs)"
1130	select ZLIB_INFLATE
1131	help
1132	  Saying Y here includes support for CramFs (Compressed ROM File
1133	  System).  CramFs is designed to be a simple, small, and compressed
1134	  file system for ROM based embedded systems.  CramFs is read-only,
1135	  limited to 256MB file systems (with 16MB files), and doesn't support
1136	  16/32 bits uid/gid, hard links and timestamps.
1137
1138	  See <file:Documentation/filesystems/cramfs.txt> and
1139	  <file:fs/cramfs/README> for further information.
1140
1141	  To compile this as a module, choose M here: the module will be called
1142	  cramfs.  Note that the root file system (the one containing the
1143	  directory /) cannot be compiled as a module.
1144
1145	  If unsure, say N.
1146
1147config VXFS_FS
1148	tristate "FreeVxFS file system support (VERITAS VxFS(TM) compatible)"
1149	help
1150	  FreeVxFS is a file system driver that support the VERITAS VxFS(TM)
1151	  file system format.  VERITAS VxFS(TM) is the standard file system
1152	  of SCO UnixWare (and possibly others) and optionally available
1153	  for Sunsoft Solaris, HP-UX and many other operating systems.
1154	  Currently only readonly access is supported.
1155
1156	  NOTE: the file system type as used by mount(1), mount(2) and
1157	  fstab(5) is 'vxfs' as it describes the file system format, not
1158	  the actual driver.
1159
1160	  To compile this as a module, choose M here: the module will be
1161	  called freevxfs.  If unsure, say N.
1162
1163
1164config HPFS_FS
1165	tristate "OS/2 HPFS file system support"
1166	help
1167	  OS/2 is IBM's operating system for PC's, the same as Warp, and HPFS
1168	  is the file system used for organizing files on OS/2 hard disk
1169	  partitions. Say Y if you want to be able to read files from and
1170	  write files to an OS/2 HPFS partition on your hard drive. OS/2
1171	  floppies however are in regular MSDOS format, so you don't need this
1172	  option in order to be able to read them. Read
1173	  <file:Documentation/filesystems/hpfs.txt>.
1174
1175	  To compile this file system support as a module, choose M here: the
1176	  module will be called hpfs.  If unsure, say N.
1177
1178
1179
1180config QNX4FS_FS
1181	tristate "QNX4 file system support (read only)"
1182	help
1183	  This is the file system used by the real-time operating systems
1184	  QNX 4 and QNX 6 (the latter is also called QNX RTP).
1185	  Further information is available at <http://www.qnx.com/>.
1186	  Say Y if you intend to mount QNX hard disks or floppies.
1187	  Unless you say Y to "QNX4FS read-write support" below, you will
1188	  only be able to read these file systems.
1189
1190	  To compile this file system support as a module, choose M here: the
1191	  module will be called qnx4.
1192
1193	  If you don't know whether you need it, then you don't need it:
1194	  answer N.
1195
1196config QNX4FS_RW
1197	bool "QNX4FS write support (DANGEROUS)"
1198	depends on QNX4FS_FS && EXPERIMENTAL && BROKEN
1199	help
1200	  Say Y if you want to test write support for QNX4 file systems.
1201
1202	  It's currently broken, so for now:
1203	  answer N.
1204
1205
1206
1207config SYSV_FS
1208	tristate "System V/Xenix/V7/Coherent file system support"
1209	help
1210	  SCO, Xenix and Coherent are commercial Unix systems for Intel
1211	  machines, and Version 7 was used on the DEC PDP-11. Saying Y
1212	  here would allow you to read from their floppies and hard disk
1213	  partitions.
1214
1215	  If you have floppies or hard disk partitions like that, it is likely
1216	  that they contain binaries from those other Unix systems; in order
1217	  to run these binaries, you will want to install linux-abi which is a
1218	  a set of kernel modules that lets you run SCO, Xenix, Wyse,
1219	  UnixWare, Dell Unix and System V programs under Linux.  It is
1220	  available via FTP (user: ftp) from
1221	  <ftp://ftp.openlinux.org/pub/people/hch/linux-abi/>).
1222	  NOTE: that will work only for binaries from Intel-based systems;
1223	  PDP ones will have to wait until somebody ports Linux to -11 ;-)
1224
1225	  If you only intend to mount files from some other Unix over the
1226	  network using NFS, you don't need the System V file system support
1227	  (but you need NFS file system support obviously).
1228
1229	  Note that this option is generally not needed for floppies, since a
1230	  good portable way to transport files and directories between unixes
1231	  (and even other operating systems) is given by the tar program ("man
1232	  tar" or preferably "info tar").  Note also that this option has
1233	  nothing whatsoever to do with the option "System V IPC". Read about
1234	  the System V file system in
1235	  <file:Documentation/filesystems/sysv-fs.txt>.
1236	  Saying Y here will enlarge your kernel by about 27 KB.
1237
1238	  To compile this as a module, choose M here: the module will be called
1239	  sysv.
1240
1241	  If you haven't heard about all of this before, it's safe to say N.
1242
1243
1244
1245config UFS_FS
1246	tristate "UFS file system support (read only)"
1247	help
1248	  BSD and derivate versions of Unix (such as SunOS, FreeBSD, NetBSD,
1249	  OpenBSD and NeXTstep) use a file system called UFS. Some System V
1250	  Unixes can create and mount hard disk partitions and diskettes using
1251	  this file system as well. Saying Y here will allow you to read from
1252	  these partitions; if you also want to write to them, say Y to the
1253	  experimental "UFS file system write support", below. Please read the
1254	  file <file:Documentation/filesystems/ufs.txt> for more information.
1255
1256          The recently released UFS2 variant (used in FreeBSD 5.x) is
1257          READ-ONLY supported.
1258
1259	  If you only intend to mount files from some other Unix over the
1260	  network using NFS, you don't need the UFS file system support (but
1261	  you need NFS file system support obviously).
1262
1263	  Note that this option is generally not needed for floppies, since a
1264	  good portable way to transport files and directories between unixes
1265	  (and even other operating systems) is given by the tar program ("man
1266	  tar" or preferably "info tar").
1267
1268	  When accessing NeXTstep files, you may need to convert them from the
1269	  NeXT character set to the Latin1 character set; use the program
1270	  recode ("info recode") for this purpose.
1271
1272	  To compile the UFS file system support as a module, choose M here: the
1273	  module will be called ufs.
1274
1275	  If you haven't heard about all of this before, it's safe to say N.
1276
1277config UFS_FS_WRITE
1278	bool "UFS file system write support (DANGEROUS)"
1279	depends on UFS_FS && EXPERIMENTAL
1280	help
1281	  Say Y here if you want to try writing to UFS partitions. This is
1282	  experimental, so you should back up your UFS partitions beforehand.
1283
1284endmenu
1285
1286menu "Network File Systems"
1287	depends on NET
1288
1289config NFS_FS
1290	tristate "NFS file system support"
1291	depends on INET
1292	select LOCKD
1293	select SUNRPC
1294	select NFS_ACL_SUPPORT if NFS_V3_ACL
1295	help
1296	  If you are connected to some other (usually local) Unix computer
1297	  (using SLIP, PLIP, PPP or Ethernet) and want to mount files residing
1298	  on that computer (the NFS server) using the Network File Sharing
1299	  protocol, say Y. "Mounting files" means that the client can access
1300	  the files with usual UNIX commands as if they were sitting on the
1301	  client's hard disk. For this to work, the server must run the
1302	  programs nfsd and mountd (but does not need to have NFS file system
1303	  support enabled in its kernel). NFS is explained in the Network
1304	  Administrator's Guide, available from
1305	  <http://www.tldp.org/docs.html#guide>, on its man page: "man
1306	  nfs", and in the NFS-HOWTO.
1307
1308	  A superior but less widely used alternative to NFS is provided by
1309	  the Coda file system; see "Coda file system support" below.
1310
1311	  If you say Y here, you should have said Y to TCP/IP networking also.
1312	  This option would enlarge your kernel by about 27 KB.
1313
1314	  To compile this file system support as a module, choose M here: the
1315	  module will be called nfs.
1316
1317	  If you are configuring a diskless machine which will mount its root
1318	  file system over NFS at boot time, say Y here and to "Kernel
1319	  level IP autoconfiguration" above and to "Root file system on NFS"
1320	  below. You cannot compile this driver as a module in this case.
1321	  There are two packages designed for booting diskless machines over
1322	  the net: netboot, available from
1323	  <http://ftp1.sourceforge.net/netboot/>, and Etherboot,
1324	  available from <http://ftp1.sourceforge.net/etherboot/>.
1325
1326	  If you don't know what all this is about, say N.
1327
1328config NFS_V3
1329	bool "Provide NFSv3 client support"
1330	depends on NFS_FS
1331	help
1332	  Say Y here if you want your NFS client to be able to speak version
1333	  3 of the NFS protocol.
1334
1335	  If unsure, say Y.
1336
1337config NFS_V3_ACL
1338	bool "Provide client support for the NFSv3 ACL protocol extension"
1339	depends on NFS_V3
1340	help
1341	  Implement the NFSv3 ACL protocol extension for manipulating POSIX
1342	  Access Control Lists.  The server should also be compiled with
1343	  the NFSv3 ACL protocol extension; see the CONFIG_NFSD_V3_ACL option.
1344
1345	  If unsure, say N.
1346
1347config NFS_V4
1348	bool "Provide NFSv4 client support (EXPERIMENTAL)"
1349	depends on NFS_FS && EXPERIMENTAL
1350	select RPCSEC_GSS_KRB5
1351	help
1352	  Say Y here if you want your NFS client to be able to speak the newer
1353	  version 4 of the NFS protocol.
1354
1355	  Note: Requires auxiliary userspace daemons which may be found on
1356		http://www.citi.umich.edu/projects/nfsv4/
1357
1358	  If unsure, say N.
1359
1360config NFS_DIRECTIO
1361	bool "Allow direct I/O on NFS files (EXPERIMENTAL)"
1362	depends on NFS_FS && EXPERIMENTAL
1363	help
1364	  This option enables applications to perform uncached I/O on files
1365	  in NFS file systems using the O_DIRECT open() flag.  When O_DIRECT
1366	  is set for a file, its data is not cached in the system's page
1367	  cache.  Data is moved to and from user-level application buffers
1368	  directly.  Unlike local disk-based file systems, NFS O_DIRECT has
1369	  no alignment restrictions.
1370
1371	  Unless your program is designed to use O_DIRECT properly, you are
1372	  much better off allowing the NFS client to manage data caching for
1373	  you.  Misusing O_DIRECT can cause poor server performance or network
1374	  storms.  This kernel build option defaults OFF to avoid exposing
1375	  system administrators unwittingly to a potentially hazardous
1376	  feature.
1377
1378	  For more details on NFS O_DIRECT, see fs/nfs/direct.c.
1379
1380	  If unsure, say N.  This reduces the size of the NFS client, and
1381	  causes open() to return EINVAL if a file residing in NFS is
1382	  opened with the O_DIRECT flag.
1383
1384config NFSD
1385	tristate "NFS server support"
1386	depends on INET
1387	select LOCKD
1388	select SUNRPC
1389	select EXPORTFS
1390	select NFS_ACL_SUPPORT if NFSD_V3_ACL || NFSD_V2_ACL
1391	help
1392	  If you want your Linux box to act as an NFS *server*, so that other
1393	  computers on your local network which support NFS can access certain
1394	  directories on your box transparently, you have two options: you can
1395	  use the self-contained user space program nfsd, in which case you
1396	  should say N here, or you can say Y and use the kernel based NFS
1397	  server. The advantage of the kernel based solution is that it is
1398	  faster.
1399
1400	  In either case, you will need support software; the respective
1401	  locations are given in the file <file:Documentation/Changes> in the
1402	  NFS section.
1403
1404	  If you say Y here, you will get support for version 2 of the NFS
1405	  protocol (NFSv2). If you also want NFSv3, say Y to the next question
1406	  as well.
1407
1408	  Please read the NFS-HOWTO, available from
1409	  <http://www.tldp.org/docs.html#howto>.
1410
1411	  To compile the NFS server support as a module, choose M here: the
1412	  module will be called nfsd.  If unsure, say N.
1413
1414config NFSD_V2_ACL
1415	bool
1416	depends on NFSD
1417
1418config NFSD_V3
1419	bool "Provide NFSv3 server support"
1420	depends on NFSD
1421	help
1422	  If you would like to include the NFSv3 server as well as the NFSv2
1423	  server, say Y here.  If unsure, say Y.
1424
1425config NFSD_V3_ACL
1426	bool "Provide server support for the NFSv3 ACL protocol extension"
1427	depends on NFSD_V3
1428	select NFSD_V2_ACL
1429	help
1430	  Implement the NFSv3 ACL protocol extension for manipulating POSIX
1431	  Access Control Lists on exported file systems. NFS clients should
1432	  be compiled with the NFSv3 ACL protocol extension; see the
1433	  CONFIG_NFS_V3_ACL option.  If unsure, say N.
1434
1435config NFSD_V4
1436	bool "Provide NFSv4 server support (EXPERIMENTAL)"
1437	depends on NFSD_V3 && EXPERIMENTAL
1438	select NFSD_TCP
1439	select CRYPTO_MD5
1440	select CRYPTO
1441	help
1442	  If you would like to include the NFSv4 server as well as the NFSv2
1443	  and NFSv3 servers, say Y here.  This feature is experimental, and
1444	  should only be used if you are interested in helping to test NFSv4.
1445	  If unsure, say N.
1446
1447config NFSD_TCP
1448	bool "Provide NFS server over TCP support"
1449	depends on NFSD
1450	default y
1451	help
1452	  If you want your NFS server to support TCP connections, say Y here.
1453	  TCP connections usually perform better than the default UDP when
1454	  the network is lossy or congested.  If unsure, say Y.
1455
1456config ROOT_NFS
1457	bool "Root file system on NFS"
1458	depends on NFS_FS=y && IP_PNP
1459	help
1460	  If you want your Linux box to mount its whole root file system (the
1461	  one containing the directory /) from some other computer over the
1462	  net via NFS (presumably because your box doesn't have a hard disk),
1463	  say Y. Read <file:Documentation/nfsroot.txt> for details. It is
1464	  likely that in this case, you also want to say Y to "Kernel level IP
1465	  autoconfiguration" so that your box can discover its network address
1466	  at boot time.
1467
1468	  Most people say N here.
1469
1470config LOCKD
1471	tristate
1472
1473config LOCKD_V4
1474	bool
1475	depends on NFSD_V3 || NFS_V3
1476	default y
1477
1478config EXPORTFS
1479	tristate
1480
1481config NFS_ACL_SUPPORT
1482	tristate
1483	select FS_POSIX_ACL
1484
1485config NFS_COMMON
1486	bool
1487	depends on NFSD || NFS_FS
1488	default y
1489
1490config SUNRPC
1491	tristate
1492
1493config SUNRPC_GSS
1494	tristate
1495
1496config RPCSEC_GSS_KRB5
1497	tristate "Secure RPC: Kerberos V mechanism (EXPERIMENTAL)"
1498	depends on SUNRPC && EXPERIMENTAL
1499	select SUNRPC_GSS
1500	select CRYPTO
1501	select CRYPTO_MD5
1502	select CRYPTO_DES
1503	help
1504	  Provides for secure RPC calls by means of a gss-api
1505	  mechanism based on Kerberos V5. This is required for
1506	  NFSv4.
1507
1508	  Note: Requires an auxiliary userspace daemon which may be found on
1509		http://www.citi.umich.edu/projects/nfsv4/
1510
1511	  If unsure, say N.
1512
1513config RPCSEC_GSS_SPKM3
1514	tristate "Secure RPC: SPKM3 mechanism (EXPERIMENTAL)"
1515	depends on SUNRPC && EXPERIMENTAL
1516	select SUNRPC_GSS
1517	select CRYPTO
1518	select CRYPTO_MD5
1519	select CRYPTO_DES
1520	help
1521	  Provides for secure RPC calls by means of a gss-api
1522	  mechanism based on the SPKM3 public-key mechanism.
1523
1524	  Note: Requires an auxiliary userspace daemon which may be found on
1525	  	http://www.citi.umich.edu/projects/nfsv4/
1526
1527	  If unsure, say N.
1528
1529config SMB_FS
1530	tristate "SMB file system support (to mount Windows shares etc.)"
1531	depends on INET
1532	select NLS
1533	help
1534	  SMB (Server Message Block) is the protocol Windows for Workgroups
1535	  (WfW), Windows 95/98, Windows NT and OS/2 Lan Manager use to share
1536	  files and printers over local networks.  Saying Y here allows you to
1537	  mount their file systems (often called "shares" in this context) and
1538	  access them just like any other Unix directory.  Currently, this
1539	  works only if the Windows machines use TCP/IP as the underlying
1540	  transport protocol, and not NetBEUI.  For details, read
1541	  <file:Documentation/filesystems/smbfs.txt> and the SMB-HOWTO,
1542	  available from <http://www.tldp.org/docs.html#howto>.
1543
1544	  Note: if you just want your box to act as an SMB *server* and make
1545	  files and printing services available to Windows clients (which need
1546	  to have a TCP/IP stack), you don't need to say Y here; you can use
1547	  the program SAMBA (available from <ftp://ftp.samba.org/pub/samba/>)
1548	  for that.
1549
1550	  General information about how to connect Linux, Windows machines and
1551	  Macs is on the WWW at <http://www.eats.com/linux_mac_win.html>.
1552
1553	  To compile the SMB support as a module, choose M here: the module will
1554	  be called smbfs.  Most people say N, however.
1555
1556config SMB_NLS_DEFAULT
1557	bool "Use a default NLS"
1558	depends on SMB_FS
1559	help
1560	  Enabling this will make smbfs use nls translations by default. You
1561	  need to specify the local charset (CONFIG_NLS_DEFAULT) in the nls
1562	  settings and you need to give the default nls for the SMB server as
1563	  CONFIG_SMB_NLS_REMOTE.
1564
1565	  The nls settings can be changed at mount time, if your smbmount
1566	  supports that, using the codepage and iocharset parameters.
1567
1568	  smbmount from samba 2.2.0 or later supports this.
1569
1570config SMB_NLS_REMOTE
1571	string "Default Remote NLS Option"
1572	depends on SMB_NLS_DEFAULT
1573	default "cp437"
1574	help
1575	  This setting allows you to specify a default value for which
1576	  codepage the server uses. If this field is left blank no
1577	  translations will be done by default. The local codepage/charset
1578	  default to CONFIG_NLS_DEFAULT.
1579
1580	  The nls settings can be changed at mount time, if your smbmount
1581	  supports that, using the codepage and iocharset parameters.
1582
1583	  smbmount from samba 2.2.0 or later supports this.
1584
1585config CIFS
1586	tristate "CIFS support (advanced network filesystem for Samba, Window and other CIFS compliant servers)"
1587	depends on INET
1588	select NLS
1589	help
1590	  This is the client VFS module for the Common Internet File System
1591	  (CIFS) protocol which is the successor to the Server Message Block
1592	  (SMB) protocol, the native file sharing mechanism for most early
1593	  PC operating systems.  The CIFS protocol is fully supported by
1594	  file servers such as Windows 2000 (including Windows 2003, NT 4
1595	  and Windows XP) as well by Samba (which provides excellent CIFS
1596	  server support for Linux and many other operating systems). Currently
1597	  you must use the smbfs client filesystem to access older SMB servers
1598	  such as Windows 9x and OS/2.
1599
1600	  The intent of the cifs module is to provide an advanced
1601	  network file system client for mounting to CIFS compliant servers,
1602	  including support for dfs (hierarchical name space), secure per-user
1603	  session establishment, safe distributed caching (oplock), optional
1604	  packet signing, Unicode and other internationalization improvements,
1605	  and optional Winbind (nsswitch) integration. You do not need to enable
1606	  cifs if running only a (Samba) server. It is possible to enable both
1607	  smbfs and cifs (e.g. if you are using CIFS for accessing Windows 2003
1608	  and Samba 3 servers, and smbfs for accessing old servers). If you need
1609	  to mount to Samba or Windows 2003 servers from this machine, say Y.
1610
1611config CIFS_STATS
1612        bool "CIFS statistics"
1613        depends on CIFS
1614        help
1615          Enabling this option will cause statistics for each server share
1616	  mounted by the cifs client to be displayed in /proc/fs/cifs/Stats
1617
1618config CIFS_XATTR
1619        bool "CIFS extended attributes (EXPERIMENTAL)"
1620        depends on CIFS
1621        help
1622          Extended attributes are name:value pairs associated with inodes by
1623          the kernel or by users (see the attr(5) manual page, or visit
1624          <http://acl.bestbits.at/> for details).  CIFS maps the name of
1625          extended attributes beginning with the user namespace prefix
1626          to SMB/CIFS EAs. EAs are stored on Windows servers without the
1627          user namespace prefix, but their names are seen by Linux cifs clients
1628          prefaced by the user namespace prefix. The system namespace
1629          (used by some filesystems to store ACLs) is not supported at
1630          this time.
1631
1632          If unsure, say N.
1633
1634config CIFS_POSIX
1635        bool "CIFS POSIX Extensions (EXPERIMENTAL)"
1636        depends on CIFS_XATTR
1637        help
1638          Enabling this option will cause the cifs client to attempt to
1639	  negotiate a newer dialect with servers, such as Samba 3.0.5
1640	  or later, that optionally can handle more POSIX like (rather
1641	  than Windows like) file behavior.  It also enables
1642	  support for POSIX ACLs (getfacl and setfacl) to servers
1643	  (such as Samba 3.10 and later) which can negotiate
1644	  CIFS POSIX ACL support.  If unsure, say N.
1645
1646config CIFS_EXPERIMENTAL
1647	  bool "CIFS Experimental Features (EXPERIMENTAL)"
1648	  depends on CIFS
1649	  help
1650	    Enables cifs features under testing. These features
1651	    are highly experimental.  If unsure, say N.
1652
1653config NCP_FS
1654	tristate "NCP file system support (to mount NetWare volumes)"
1655	depends on IPX!=n || INET
1656	help
1657	  NCP (NetWare Core Protocol) is a protocol that runs over IPX and is
1658	  used by Novell NetWare clients to talk to file servers.  It is to
1659	  IPX what NFS is to TCP/IP, if that helps.  Saying Y here allows you
1660	  to mount NetWare file server volumes and to access them just like
1661	  any other Unix directory.  For details, please read the file
1662	  <file:Documentation/filesystems/ncpfs.txt> in the kernel source and
1663	  the IPX-HOWTO from <http://www.tldp.org/docs.html#howto>.
1664
1665	  You do not have to say Y here if you want your Linux box to act as a
1666	  file *server* for Novell NetWare clients.
1667
1668	  General information about how to connect Linux, Windows machines and
1669	  Macs is on the WWW at <http://www.eats.com/linux_mac_win.html>.
1670
1671	  To compile this as a module, choose M here: the module will be called
1672	  ncpfs.  Say N unless you are connected to a Novell network.
1673
1674source "fs/ncpfs/Kconfig"
1675
1676config CODA_FS
1677	tristate "Coda file system support (advanced network fs)"
1678	depends on INET
1679	help
1680	  Coda is an advanced network file system, similar to NFS in that it
1681	  enables you to mount file systems of a remote server and access them
1682	  with regular Unix commands as if they were sitting on your hard
1683	  disk.  Coda has several advantages over NFS: support for
1684	  disconnected operation (e.g. for laptops), read/write server
1685	  replication, security model for authentication and encryption,
1686	  persistent client caches and write back caching.
1687
1688	  If you say Y here, your Linux box will be able to act as a Coda
1689	  *client*.  You will need user level code as well, both for the
1690	  client and server.  Servers are currently user level, i.e. they need
1691	  no kernel support.  Please read
1692	  <file:Documentation/filesystems/coda.txt> and check out the Coda
1693	  home page <http://www.coda.cs.cmu.edu/>.
1694
1695	  To compile the coda client support as a module, choose M here: the
1696	  module will be called coda.
1697
1698config CODA_FS_OLD_API
1699	bool "Use 96-bit Coda file identifiers"
1700	depends on CODA_FS
1701	help
1702	  A new kernel-userspace API had to be introduced for Coda v6.0
1703	  to support larger 128-bit file identifiers as needed by the
1704	  new realms implementation.
1705
1706	  However this new API is not backward compatible with older
1707	  clients. If you really need to run the old Coda userspace
1708	  cache manager then say Y.
1709
1710	  For most cases you probably want to say N.
1711
1712config AFS_FS
1713# for fs/nls/Config.in
1714	tristate "Andrew File System support (AFS) (Experimental)"
1715	depends on INET && EXPERIMENTAL
1716	select RXRPC
1717	help
1718	  If you say Y here, you will get an experimental Andrew File System
1719	  driver. It currently only supports unsecured read-only AFS access.
1720
1721	  See <file:Documentation/filesystems/afs.txt> for more intormation.
1722
1723	  If unsure, say N.
1724
1725config RXRPC
1726	tristate
1727
1728endmenu
1729
1730menu "Partition Types"
1731
1732source "fs/partitions/Kconfig"
1733
1734endmenu
1735
1736source "fs/nls/Kconfig"
1737
1738endmenu
1739
1740