xref: /linux/fs/Kconfig (revision 13abf8130139c2ccd4962a7e5a8902be5e6cb5a7)
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	select FS_POSIX_ACL
33	help
34	  Posix Access Control Lists (ACLs) support permissions for users and
35	  groups beyond the owner/group/world scheme.
36
37	  To learn more about Access Control Lists, visit the Posix ACLs for
38	  Linux website <http://acl.bestbits.at/>.
39
40	  If you don't know what Access Control Lists are, say N
41
42config EXT2_FS_SECURITY
43	bool "Ext2 Security Labels"
44	depends on EXT2_FS_XATTR
45	help
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.
50
51	  If you are not using a security module that requires using
52	  extended attributes for file security labels, say N.
53
54config EXT2_FS_XIP
55	bool "Ext2 execute in place support"
56	depends on EXT2_FS
57	help
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.
61
62	  If you do not use a block device that is capable of using this,
63	  or if unsure, say N.
64
65config FS_XIP
66# execute in place
67	bool
68	depends on EXT2_FS_XIP
69	default y
70
71config EXT3_FS
72	tristate "Ext3 journalling file system support"
73	help
74	  This is the journaling version of the Second extended file system
75	  (often called ext3), the de facto standard Linux file system
76	  (method to organize files on a storage device) for hard disks.
77
78	  The journaling code included in this driver means you do not have
79	  to run e2fsck (file system checker) on your file systems after a
80	  crash.  The journal keeps track of any changes that were being made
81	  at the time the system crashed, and can ensure that your file system
82	  is consistent without the need for a lengthy check.
83
84	  Other than adding the journal to the file system, the on-disk format
85	  of ext3 is identical to ext2.  It is possible to freely switch
86	  between using the ext3 driver and the ext2 driver, as long as the
87	  file system has been cleanly unmounted, or e2fsck is run on the file
88	  system.
89
90	  To add a journal on an existing ext2 file system or change the
91	  behavior of ext3 file systems, you can use the tune2fs utility ("man
92	  tune2fs").  To modify attributes of files and directories on ext3
93	  file systems, use chattr ("man chattr").  You need to be using
94	  e2fsprogs version 1.20 or later in order to create ext3 journals
95	  (available at <http://sourceforge.net/projects/e2fsprogs/>).
96
97	  To compile this file system support as a module, choose M here: the
98	  module will be called ext3.  Be aware however that the file system
99	  of your root partition (the one containing the directory /) cannot
100	  be compiled as a module, and so this may be dangerous.
101
102config EXT3_FS_XATTR
103	bool "Ext3 extended attributes"
104	depends on EXT3_FS
105	default y
106	help
107	  Extended attributes are name:value pairs associated with inodes by
108	  the kernel or by users (see the attr(5) manual page, or visit
109	  <http://acl.bestbits.at/> for details).
110
111	  If unsure, say N.
112
113	  You need this for POSIX ACL support on ext3.
114
115config EXT3_FS_POSIX_ACL
116	bool "Ext3 POSIX Access Control Lists"
117	depends on EXT3_FS_XATTR
118	select FS_POSIX_ACL
119	help
120	  Posix Access Control Lists (ACLs) support permissions for users and
121	  groups beyond the owner/group/world scheme.
122
123	  To learn more about Access Control Lists, visit the Posix ACLs for
124	  Linux website <http://acl.bestbits.at/>.
125
126	  If you don't know what Access Control Lists are, say N
127
128config EXT3_FS_SECURITY
129	bool "Ext3 Security Labels"
130	depends on EXT3_FS_XATTR
131	help
132	  Security labels support alternative access control models
133	  implemented by security modules like SELinux.  This option
134	  enables an extended attribute handler for file security
135	  labels in the ext3 filesystem.
136
137	  If you are not using a security module that requires using
138	  extended attributes for file security labels, say N.
139
140config JBD
141# CONFIG_JBD could be its own option (even modular), but until there are
142# other users than ext3, we will simply make it be the same as CONFIG_EXT3_FS
143# dep_tristate '  Journal Block Device support (JBD for ext3)' CONFIG_JBD $CONFIG_EXT3_FS
144	tristate
145	default EXT3_FS
146	help
147	  This is a generic journaling layer for block devices.  It is
148	  currently used by the ext3 file system, but it could also be used to
149	  add journal support to other file systems or block devices such as
150	  RAID or LVM.
151
152	  If you are using the ext3 file system, you need to say Y here. If
153	  you are not using ext3 then you will probably want to say N.
154
155	  To compile this device as a module, choose M here: the module will be
156	  called jbd.  If you are compiling ext3 into the kernel, you cannot
157	  compile this code as a module.
158
159config JBD_DEBUG
160	bool "JBD (ext3) debugging support"
161	depends on JBD
162	help
163	  If you are using the ext3 journaled file system (or potentially any
164	  other file system/device using JBD), this option allows you to
165	  enable debugging output while the system is running, in order to
166	  help track down any problems you are having.  By default the
167	  debugging output will be turned off.
168
169	  If you select Y here, then you will be able to turn on debugging
170	  with "echo N > /proc/sys/fs/jbd-debug", where N is a number between
171	  1 and 5, the higher the number, the more debugging output is
172	  generated.  To turn debugging off again, do
173	  "echo 0 > /proc/sys/fs/jbd-debug".
174
175config FS_MBCACHE
176# Meta block cache for Extended Attributes (ext2/ext3)
177	tristate
178	depends on EXT2_FS_XATTR || EXT3_FS_XATTR
179	default y if EXT2_FS=y || EXT3_FS=y
180	default m if EXT2_FS=m || EXT3_FS=m
181
182config REISERFS_FS
183	tristate "Reiserfs support"
184	help
185	  Stores not just filenames but the files themselves in a balanced
186	  tree.  Uses journaling.
187
188	  Balanced trees are more efficient than traditional file system
189	  architectural foundations.
190
191	  In general, ReiserFS is as fast as ext2, but is very efficient with
192	  large directories and small files.  Additional patches are needed
193	  for NFS and quotas, please see <http://www.namesys.com/> for links.
194
195	  It is more easily extended to have features currently found in
196	  database and keyword search systems than block allocation based file
197	  systems are.  The next version will be so extended, and will support
198	  plugins consistent with our motto ``It takes more than a license to
199	  make source code open.''
200
201	  Read <http://www.namesys.com/> to learn more about reiserfs.
202
203	  Sponsored by Threshold Networks, Emusic.com, and Bigstorage.com.
204
205	  If you like it, you can pay us to add new features to it that you
206	  need, buy a support contract, or pay us to port it to another OS.
207
208config REISERFS_CHECK
209	bool "Enable reiserfs debug mode"
210	depends on REISERFS_FS
211	help
212	  If you set this to Y, then ReiserFS will perform every check it can
213	  possibly imagine of its internal consistency throughout its
214	  operation.  It will also go substantially slower.  More than once we
215	  have forgotten that this was on, and then gone despondent over the
216	  latest benchmarks.:-) Use of this option allows our team to go all
217	  out in checking for consistency when debugging without fear of its
218	  effect on end users.  If you are on the verge of sending in a bug
219	  report, say Y and you might get a useful error message.  Almost
220	  everyone should say N.
221
222config REISERFS_PROC_INFO
223	bool "Stats in /proc/fs/reiserfs"
224	depends on REISERFS_FS
225	help
226	  Create under /proc/fs/reiserfs a hierarchy of files, displaying
227	  various ReiserFS statistics and internal data at the expense of
228	  making your kernel or module slightly larger (+8 KB). This also
229	  increases the amount of kernel memory required for each mount.
230	  Almost everyone but ReiserFS developers and people fine-tuning
231	  reiserfs or tracing problems should say N.
232
233config REISERFS_FS_XATTR
234	bool "ReiserFS extended attributes"
235	depends on REISERFS_FS
236	help
237	  Extended attributes are name:value pairs associated with inodes by
238	  the kernel or by users (see the attr(5) manual page, or visit
239	  <http://acl.bestbits.at/> for details).
240
241	  If unsure, say N.
242
243config REISERFS_FS_POSIX_ACL
244	bool "ReiserFS POSIX Access Control Lists"
245	depends on REISERFS_FS_XATTR
246	select FS_POSIX_ACL
247	help
248	  Posix Access Control Lists (ACLs) support permissions for users and
249	  groups beyond the owner/group/world scheme.
250
251	  To learn more about Access Control Lists, visit the Posix ACLs for
252	  Linux website <http://acl.bestbits.at/>.
253
254	  If you don't know what Access Control Lists are, say N
255
256config REISERFS_FS_SECURITY
257	bool "ReiserFS Security Labels"
258	depends on REISERFS_FS_XATTR
259	help
260	  Security labels support alternative access control models
261	  implemented by security modules like SELinux.  This option
262	  enables an extended attribute handler for file security
263	  labels in the ReiserFS filesystem.
264
265	  If you are not using a security module that requires using
266	  extended attributes for file security labels, say N.
267
268config JFS_FS
269	tristate "JFS filesystem support"
270	select NLS
271	help
272	  This is a port of IBM's Journaled Filesystem .  More information is
273	  available in the file <file:Documentation/filesystems/jfs.txt>.
274
275	  If you do not intend to use the JFS filesystem, say N.
276
277config JFS_POSIX_ACL
278	bool "JFS POSIX Access Control Lists"
279	depends on JFS_FS
280	select FS_POSIX_ACL
281	help
282	  Posix Access Control Lists (ACLs) support permissions for users and
283	  groups beyond the owner/group/world scheme.
284
285	  To learn more about Access Control Lists, visit the Posix ACLs for
286	  Linux website <http://acl.bestbits.at/>.
287
288	  If you don't know what Access Control Lists are, say N
289
290config JFS_SECURITY
291	bool "JFS Security Labels"
292	depends on JFS_FS
293	help
294	  Security labels support alternative access control models
295	  implemented by security modules like SELinux.  This option
296	  enables an extended attribute handler for file security
297	  labels in the jfs filesystem.
298
299	  If you are not using a security module that requires using
300	  extended attributes for file security labels, say N.
301
302config JFS_DEBUG
303	bool "JFS debugging"
304	depends on JFS_FS
305	help
306	  If you are experiencing any problems with the JFS filesystem, say
307	  Y here.  This will result in additional debugging messages to be
308	  written to the system log.  Under normal circumstances, this
309	  results in very little overhead.
310
311config JFS_STATISTICS
312	bool "JFS statistics"
313	depends on JFS_FS
314	help
315	  Enabling this option will cause statistics from the JFS file system
316	  to be made available to the user in the /proc/fs/jfs/ directory.
317
318config FS_POSIX_ACL
319# Posix ACL utility routines (for now, only ext2/ext3/jfs/reiserfs)
320#
321# NOTE: you can implement Posix ACLs without these helpers (XFS does).
322# 	Never use this symbol for ifdefs.
323#
324	bool
325	default n
326
327source "fs/xfs/Kconfig"
328
329config MINIX_FS
330	tristate "Minix fs support"
331	help
332	  Minix is a simple operating system used in many classes about OS's.
333	  The minix file system (method to organize files on a hard disk
334	  partition or a floppy disk) was the original file system for Linux,
335	  but has been superseded by the second extended file system ext2fs.
336	  You don't want to use the minix file system on your hard disk
337	  because of certain built-in restrictions, but it is sometimes found
338	  on older Linux floppy disks.  This option will enlarge your kernel
339	  by about 28 KB. If unsure, say N.
340
341	  To compile this file system support as a module, choose M here: the
342	  module will be called minix.  Note that the file system of your root
343	  partition (the one containing the directory /) cannot be compiled as
344	  a module.
345
346config ROMFS_FS
347	tristate "ROM file system support"
348	---help---
349	  This is a very small read-only file system mainly intended for
350	  initial ram disks of installation disks, but it could be used for
351	  other read-only media as well.  Read
352	  <file:Documentation/filesystems/romfs.txt> for details.
353
354	  To compile this file system support as a module, choose M here: the
355	  module will be called romfs.  Note that the file system of your
356	  root partition (the one containing the directory /) cannot be a
357	  module.
358
359	  If you don't know whether you need it, then you don't need it:
360	  answer N.
361
362config INOTIFY
363	bool "Inotify file change notification support"
364	default y
365	---help---
366	  Say Y here to enable inotify support and the associated system
367	  calls.  Inotify is a file change notification system and a
368	  replacement for dnotify.  Inotify fixes numerous shortcomings in
369	  dnotify and introduces several new features.  It allows monitoring
370	  of both files and directories via a single open fd.  Other features
371	  include multiple file events, one-shot support, and unmount
372	  notification.
373
374	  For more information, see Documentation/filesystems/inotify.txt
375
376	  If unsure, say Y.
377
378config QUOTA
379	bool "Quota support"
380	help
381	  If you say Y here, you will be able to set per user limits for disk
382	  usage (also called disk quotas). Currently, it works for the
383	  ext2, ext3, and reiserfs file system. ext3 also supports journalled
384	  quotas for which you don't need to run quotacheck(8) after an unclean
385	  shutdown. You need additional software in order to use quota support
386	  (you can download sources from
387	  <http://www.sf.net/projects/linuxquota/>). For further details, read
388	  the Quota mini-HOWTO, available from
389	  <http://www.tldp.org/docs.html#howto>, or the documentation provided
390	  with the quota tools. Probably the quota support is only useful for
391	  multi user systems. If unsure, say N.
392
393config QFMT_V1
394	tristate "Old quota format support"
395	depends on QUOTA
396	help
397	  This quota format was (is) used by kernels earlier than 2.4.22. If
398	  you have quota working and you don't want to convert to new quota
399	  format say Y here.
400
401config QFMT_V2
402	tristate "Quota format v2 support"
403	depends on QUOTA
404	help
405	  This quota format allows using quotas with 32-bit UIDs/GIDs. If you
406	  need this functionality say Y here. Note that you will need recent
407	  quota utilities (>= 3.01) for new quota format with this kernel.
408
409config QUOTACTL
410	bool
411	depends on XFS_QUOTA || QUOTA
412	default y
413
414config DNOTIFY
415	bool "Dnotify support" if EMBEDDED
416	default y
417	help
418	  Dnotify is a directory-based per-fd file change notification system
419	  that uses signals to communicate events to user-space.  There exist
420	  superior alternatives, but some applications may still rely on
421	  dnotify.
422
423	  Because of this, if unsure, say Y.
424
425config AUTOFS_FS
426	tristate "Kernel automounter support"
427	help
428	  The automounter is a tool to automatically mount remote file systems
429	  on demand. This implementation is partially kernel-based to reduce
430	  overhead in the already-mounted case; this is unlike the BSD
431	  automounter (amd), which is a pure user space daemon.
432
433	  To use the automounter you need the user-space tools from the autofs
434	  package; you can find the location in <file:Documentation/Changes>.
435	  You also want to answer Y to "NFS file system support", below.
436
437	  If you want to use the newer version of the automounter with more
438	  features, say N here and say Y to "Kernel automounter v4 support",
439	  below.
440
441	  To compile this support as a module, choose M here: the module will be
442	  called autofs.
443
444	  If you are not a part of a fairly large, distributed network, you
445	  probably do not need an automounter, and can say N here.
446
447config AUTOFS4_FS
448	tristate "Kernel automounter version 4 support (also supports v3)"
449	help
450	  The automounter is a tool to automatically mount remote file systems
451	  on demand. This implementation is partially kernel-based to reduce
452	  overhead in the already-mounted case; this is unlike the BSD
453	  automounter (amd), which is a pure user space daemon.
454
455	  To use the automounter you need the user-space tools from
456	  <ftp://ftp.kernel.org/pub/linux/daemons/autofs/v4/>; you also
457	  want to answer Y to "NFS file system support", below.
458
459	  To compile this support as a module, choose M here: the module will be
460	  called autofs4.  You will need to add "alias autofs autofs4" to your
461	  modules configuration file.
462
463	  If you are not a part of a fairly large, distributed network or
464	  don't have a laptop which needs to dynamically reconfigure to the
465	  local network, you probably do not need an automounter, and can say
466	  N here.
467
468menu "CD-ROM/DVD Filesystems"
469
470config ISO9660_FS
471	tristate "ISO 9660 CDROM file system support"
472	help
473	  This is the standard file system used on CD-ROMs.  It was previously
474	  known as "High Sierra File System" and is called "hsfs" on other
475	  Unix systems.  The so-called Rock-Ridge extensions which allow for
476	  long Unix filenames and symbolic links are also supported by this
477	  driver.  If you have a CD-ROM drive and want to do more with it than
478	  just listen to audio CDs and watch its LEDs, say Y (and read
479	  <file:Documentation/filesystems/isofs.txt> and the CD-ROM-HOWTO,
480	  available from <http://www.tldp.org/docs.html#howto>), thereby
481	  enlarging your kernel by about 27 KB; otherwise say N.
482
483	  To compile this file system support as a module, choose M here: the
484	  module will be called isofs.
485
486config JOLIET
487	bool "Microsoft Joliet CDROM extensions"
488	depends on ISO9660_FS
489	select NLS
490	help
491	  Joliet is a Microsoft extension for the ISO 9660 CD-ROM file system
492	  which allows for long filenames in unicode format (unicode is the
493	  new 16 bit character code, successor to ASCII, which encodes the
494	  characters of almost all languages of the world; see
495	  <http://www.unicode.org/> for more information).  Say Y here if you
496	  want to be able to read Joliet CD-ROMs under Linux.
497
498config ZISOFS
499	bool "Transparent decompression extension"
500	depends on ISO9660_FS
501	select ZLIB_INFLATE
502	help
503	  This is a Linux-specific extension to RockRidge which lets you store
504	  data in compressed form on a CD-ROM and have it transparently
505	  decompressed when the CD-ROM is accessed.  See
506	  <http://www.kernel.org/pub/linux/utils/fs/zisofs/> for the tools
507	  necessary to create such a filesystem.  Say Y here if you want to be
508	  able to read such compressed CD-ROMs.
509
510config ZISOFS_FS
511# for fs/nls/Config.in
512	tristate
513	depends on ZISOFS
514	default ISO9660_FS
515
516config UDF_FS
517	tristate "UDF file system support"
518	help
519	  This is the new file system used on some CD-ROMs and DVDs. Say Y if
520	  you intend to mount DVD discs or CDRW's written in packet mode, or
521	  if written to by other UDF utilities, such as DirectCD.
522	  Please read <file:Documentation/filesystems/udf.txt>.
523
524	  To compile this file system support as a module, choose M here: the
525	  module will be called udf.
526
527	  If unsure, say N.
528
529config UDF_NLS
530	bool
531	default y
532	depends on (UDF_FS=m && NLS) || (UDF_FS=y && NLS=y)
533
534endmenu
535
536menu "DOS/FAT/NT Filesystems"
537
538config FAT_FS
539	tristate
540	select NLS
541	help
542	  If you want to use one of the FAT-based file systems (the MS-DOS and
543	  VFAT (Windows 95) file systems), then you must say Y or M here
544	  to include FAT support. You will then be able to mount partitions or
545	  diskettes with FAT-based file systems and transparently access the
546	  files on them, i.e. MSDOS files will look and behave just like all
547	  other Unix files.
548
549	  This FAT support is not a file system in itself, it only provides
550	  the foundation for the other file systems. You will have to say Y or
551	  M to at least one of "MSDOS fs support" or "VFAT fs support" in
552	  order to make use of it.
553
554	  Another way to read and write MSDOS floppies and hard drive
555	  partitions from within Linux (but not transparently) is with the
556	  mtools ("man mtools") program suite. You don't need to say Y here in
557	  order to do that.
558
559	  If you need to move large files on floppies between a DOS and a
560	  Linux box, say Y here, mount the floppy under Linux with an MSDOS
561	  file system and use GNU tar's M option. GNU tar is a program
562	  available for Unix and DOS ("man tar" or "info tar").
563
564	  It is now also becoming possible to read and write compressed FAT
565	  file systems; read <file:Documentation/filesystems/fat_cvf.txt> for
566	  details.
567
568	  The FAT support will enlarge your kernel by about 37 KB. If unsure,
569	  say Y.
570
571	  To compile this as a module, choose M here: the module will be called
572	  fat.  Note that if you compile the FAT support as a module, you
573	  cannot compile any of the FAT-based file systems into the kernel
574	  -- they will have to be modules as well.
575
576config MSDOS_FS
577	tristate "MSDOS fs support"
578	select FAT_FS
579	help
580	  This allows you to mount MSDOS partitions of your hard drive (unless
581	  they are compressed; to access compressed MSDOS partitions under
582	  Linux, you can either use the DOS emulator DOSEMU, described in the
583	  DOSEMU-HOWTO, available from
584	  <http://www.tldp.org/docs.html#howto>, or try dmsdosfs in
585	  <ftp://ibiblio.org/pub/Linux/system/filesystems/dosfs/>. If you
586	  intend to use dosemu with a non-compressed MSDOS partition, say Y
587	  here) and MSDOS floppies. This means that file access becomes
588	  transparent, i.e. the MSDOS files look and behave just like all
589	  other Unix files.
590
591	  If you have Windows 95 or Windows NT installed on your MSDOS
592	  partitions, you should use the VFAT file system (say Y to "VFAT fs
593	  support" below), or you will not be able to see the long filenames
594	  generated by Windows 95 / Windows NT.
595
596	  This option will enlarge your kernel by about 7 KB. If unsure,
597	  answer Y. This will only work if you said Y to "DOS FAT fs support"
598	  as well. To compile this as a module, choose M here: the module will
599	  be called msdos.
600
601config VFAT_FS
602	tristate "VFAT (Windows-95) fs support"
603	select FAT_FS
604	help
605	  This option provides support for normal Windows file systems with
606	  long filenames.  That includes non-compressed FAT-based file systems
607	  used by Windows 95, Windows 98, Windows NT 4.0, and the Unix
608	  programs from the mtools package.
609
610	  The VFAT support enlarges your kernel by about 10 KB and it only
611	  works if you said Y to the "DOS FAT fs support" above.  Please read
612	  the file <file:Documentation/filesystems/vfat.txt> for details.  If
613	  unsure, say Y.
614
615	  To compile this as a module, choose M here: the module will be called
616	  vfat.
617
618config FAT_DEFAULT_CODEPAGE
619	int "Default codepage for FAT"
620	depends on MSDOS_FS || VFAT_FS
621	default 437
622	help
623	  This option should be set to the codepage of your FAT filesystems.
624	  It can be overridden with the "codepage" mount option.
625	  See <file:Documentation/filesystems/vfat.txt> for more information.
626
627config FAT_DEFAULT_IOCHARSET
628	string "Default iocharset for FAT"
629	depends on VFAT_FS
630	default "iso8859-1"
631	help
632	  Set this to the default input/output character set you'd
633	  like FAT to use. It should probably match the character set
634	  that most of your FAT filesystems use, and can be overridden
635	  with the "iocharset" mount option for FAT filesystems.
636	  Note that "utf8" is not recommended for FAT filesystems.
637	  If unsure, you shouldn't set "utf8" here.
638	  See <file:Documentation/filesystems/vfat.txt> for more information.
639
640config NTFS_FS
641	tristate "NTFS file system support"
642	select NLS
643	help
644	  NTFS is the file system of Microsoft Windows NT, 2000, XP and 2003.
645
646	  Saying Y or M here enables read support.  There is partial, but
647	  safe, write support available.  For write support you must also
648	  say Y to "NTFS write support" below.
649
650	  There are also a number of user-space tools available, called
651	  ntfsprogs.  These include ntfsundelete and ntfsresize, that work
652	  without NTFS support enabled in the kernel.
653
654	  This is a rewrite from scratch of Linux NTFS support and replaced
655	  the old NTFS code starting with Linux 2.5.11.  A backport to
656	  the Linux 2.4 kernel series is separately available as a patch
657	  from the project web site.
658
659	  For more information see <file:Documentation/filesystems/ntfs.txt>
660	  and <http://linux-ntfs.sourceforge.net/>.
661
662	  To compile this file system support as a module, choose M here: the
663	  module will be called ntfs.
664
665	  If you are not using Windows NT, 2000, XP or 2003 in addition to
666	  Linux on your computer it is safe to say N.
667
668config NTFS_DEBUG
669	bool "NTFS debugging support"
670	depends on NTFS_FS
671	help
672	  If you are experiencing any problems with the NTFS file system, say
673	  Y here.  This will result in additional consistency checks to be
674	  performed by the driver as well as additional debugging messages to
675	  be written to the system log.  Note that debugging messages are
676	  disabled by default.  To enable them, supply the option debug_msgs=1
677	  at the kernel command line when booting the kernel or as an option
678	  to insmod when loading the ntfs module.  Once the driver is active,
679	  you can enable debugging messages by doing (as root):
680	  echo 1 > /proc/sys/fs/ntfs-debug
681	  Replacing the "1" with "0" would disable debug messages.
682
683	  If you leave debugging messages disabled, this results in little
684	  overhead, but enabling debug messages results in very significant
685	  slowdown of the system.
686
687	  When reporting bugs, please try to have available a full dump of
688	  debugging messages while the misbehaviour was occurring.
689
690config NTFS_RW
691	bool "NTFS write support"
692	depends on NTFS_FS
693	help
694	  This enables the partial, but safe, write support in the NTFS driver.
695
696	  The only supported operation is overwriting existing files, without
697	  changing the file length.  No file or directory creation, deletion or
698	  renaming is possible.  Note only non-resident files can be written to
699	  so you may find that some very small files (<500 bytes or so) cannot
700	  be written to.
701
702	  While we cannot guarantee that it will not damage any data, we have
703	  so far not received a single report where the driver would have
704	  damaged someones data so we assume it is perfectly safe to use.
705
706	  Note:  While write support is safe in this version (a rewrite from
707	  scratch of the NTFS support), it should be noted that the old NTFS
708	  write support, included in Linux 2.5.10 and before (since 1997),
709	  is not safe.
710
711	  This is currently useful with TopologiLinux.  TopologiLinux is run
712	  on top of any DOS/Microsoft Windows system without partitioning your
713	  hard disk.  Unlike other Linux distributions TopologiLinux does not
714	  need its own partition.  For more information see
715	  <http://topologi-linux.sourceforge.net/>
716
717	  It is perfectly safe to say N here.
718
719endmenu
720
721menu "Pseudo filesystems"
722
723config PROC_FS
724	bool "/proc file system support"
725	help
726	  This is a virtual file system providing information about the status
727	  of the system. "Virtual" means that it doesn't take up any space on
728	  your hard disk: the files are created on the fly by the kernel when
729	  you try to access them. Also, you cannot read the files with older
730	  version of the program less: you need to use more or cat.
731
732	  It's totally cool; for example, "cat /proc/interrupts" gives
733	  information about what the different IRQs are used for at the moment
734	  (there is a small number of Interrupt ReQuest lines in your computer
735	  that are used by the attached devices to gain the CPU's attention --
736	  often a source of trouble if two devices are mistakenly configured
737	  to use the same IRQ). The program procinfo to display some
738	  information about your system gathered from the /proc file system.
739
740	  Before you can use the /proc file system, it has to be mounted,
741	  meaning it has to be given a location in the directory hierarchy.
742	  That location should be /proc. A command such as "mount -t proc proc
743	  /proc" or the equivalent line in /etc/fstab does the job.
744
745	  The /proc file system is explained in the file
746	  <file:Documentation/filesystems/proc.txt> and on the proc(5) manpage
747	  ("man 5 proc").
748
749	  This option will enlarge your kernel by about 67 KB. Several
750	  programs depend on this, so everyone should say Y here.
751
752config PROC_KCORE
753	bool "/proc/kcore support" if !ARM
754	depends on PROC_FS && MMU
755
756config PROC_VMCORE
757        bool "/proc/vmcore support (EXPERIMENTAL)"
758        depends on PROC_FS && EMBEDDED && EXPERIMENTAL && CRASH_DUMP
759        help
760        Exports the dump image of crashed kernel in ELF format.
761
762config SYSFS
763	bool "sysfs file system support" if EMBEDDED
764	default y
765	help
766	The sysfs filesystem is a virtual filesystem that the kernel uses to
767	export internal kernel objects, their attributes, and their
768	relationships to one another.
769
770	Users can use sysfs to ascertain useful information about the running
771	kernel, such as the devices the kernel has discovered on each bus and
772	which driver each is bound to. sysfs can also be used to tune devices
773	and other kernel subsystems.
774
775	Some system agents rely on the information in sysfs to operate.
776	/sbin/hotplug uses device and object attributes in sysfs to assist in
777	delegating policy decisions, like persistantly naming devices.
778
779	sysfs is currently used by the block subsystem to mount the root
780	partition.  If sysfs is disabled you must specify the boot device on
781	the kernel boot command line via its major and minor numbers.  For
782	example, "root=03:01" for /dev/hda1.
783
784	Designers of embedded systems may wish to say N here to conserve space.
785
786config TMPFS
787	bool "Virtual memory file system support (former shm fs)"
788	help
789	  Tmpfs is a file system which keeps all files in virtual memory.
790
791	  Everything in tmpfs is temporary in the sense that no files will be
792	  created on your hard drive. The files live in memory and swap
793	  space. If you unmount a tmpfs instance, everything stored therein is
794	  lost.
795
796	  See <file:Documentation/filesystems/tmpfs.txt> for details.
797
798config HUGETLBFS
799	bool "HugeTLB file system support"
800	depends X86 || IA64 || PPC64 || SPARC64 || SUPERH || X86_64 || BROKEN
801
802config HUGETLB_PAGE
803	def_bool HUGETLBFS
804
805config RAMFS
806	bool
807	default y
808	---help---
809	  Ramfs is a file system which keeps all files in RAM. It allows
810	  read and write access.
811
812	  It is more of an programming example than a useable file system.  If
813	  you need a file system which lives in RAM with limit checking use
814	  tmpfs.
815
816	  To compile this as a module, choose M here: the module will be called
817	  ramfs.
818
819endmenu
820
821menu "Miscellaneous filesystems"
822
823config ADFS_FS
824	tristate "ADFS file system support (EXPERIMENTAL)"
825	depends on EXPERIMENTAL
826	help
827	  The Acorn Disc Filing System is the standard file system of the
828	  RiscOS operating system which runs on Acorn's ARM-based Risc PC
829	  systems and the Acorn Archimedes range of machines. If you say Y
830	  here, Linux will be able to read from ADFS partitions on hard drives
831	  and from ADFS-formatted floppy discs. If you also want to be able to
832	  write to those devices, say Y to "ADFS write support" below.
833
834	  The ADFS partition should be the first partition (i.e.,
835	  /dev/[hs]d?1) on each of your drives. Please read the file
836	  <file:Documentation/filesystems/adfs.txt> for further details.
837
838	  To compile this code as a module, choose M here: the module will be
839	  called adfs.
840
841	  If unsure, say N.
842
843config ADFS_FS_RW
844	bool "ADFS write support (DANGEROUS)"
845	depends on ADFS_FS
846	help
847	  If you say Y here, you will be able to write to ADFS partitions on
848	  hard drives and ADFS-formatted floppy disks. This is experimental
849	  codes, so if you're unsure, say N.
850
851config AFFS_FS
852	tristate "Amiga FFS file system support (EXPERIMENTAL)"
853	depends on EXPERIMENTAL
854	help
855	  The Fast File System (FFS) is the common file system used on hard
856	  disks by Amiga(tm) systems since AmigaOS Version 1.3 (34.20).  Say Y
857	  if you want to be able to read and write files from and to an Amiga
858	  FFS partition on your hard drive.  Amiga floppies however cannot be
859	  read with this driver due to an incompatibility of the floppy
860	  controller used in an Amiga and the standard floppy controller in
861	  PCs and workstations. Read <file:Documentation/filesystems/affs.txt>
862	  and <file:fs/affs/Changes>.
863
864	  With this driver you can also mount disk files used by Bernd
865	  Schmidt's Un*X Amiga Emulator
866	  (<http://www.freiburg.linux.de/~uae/>).
867	  If you want to do this, you will also need to say Y or M to "Loop
868	  device support", above.
869
870	  To compile this file system support as a module, choose M here: the
871	  module will be called affs.  If unsure, say N.
872
873config HFS_FS
874	tristate "Apple Macintosh file system support (EXPERIMENTAL)"
875	depends on EXPERIMENTAL
876	help
877	  If you say Y here, you will be able to mount Macintosh-formatted
878	  floppy disks and hard drive partitions with full read-write access.
879	  Please read <file:fs/hfs/HFS.txt> to learn about the available mount
880	  options.
881
882	  To compile this file system support as a module, choose M here: the
883	  module will be called hfs.
884
885config HFSPLUS_FS
886	tristate "Apple Extended HFS file system support"
887	select NLS
888	select NLS_UTF8
889	help
890	  If you say Y here, you will be able to mount extended format
891	  Macintosh-formatted hard drive partitions with full read-write access.
892
893	  This file system is often called HFS+ and was introduced with
894	  MacOS 8. It includes all Mac specific filesystem data such as
895	  data forks and creator codes, but it also has several UNIX
896	  style features such as file ownership and permissions.
897
898config BEFS_FS
899	tristate "BeOS file system (BeFS) support (read only) (EXPERIMENTAL)"
900	depends on EXPERIMENTAL
901	select NLS
902	help
903	  The BeOS File System (BeFS) is the native file system of Be, Inc's
904	  BeOS. Notable features include support for arbitrary attributes
905	  on files and directories, and database-like indeces on selected
906	  attributes. (Also note that this driver doesn't make those features
907	  available at this time). It is a 64 bit filesystem, so it supports
908	  extremly large volumes and files.
909
910	  If you use this filesystem, you should also say Y to at least one
911	  of the NLS (native language support) options below.
912
913	  If you don't know what this is about, say N.
914
915	  To compile this as a module, choose M here: the module will be
916	  called befs.
917
918config BEFS_DEBUG
919	bool "Debug BeFS"
920	depends on BEFS_FS
921	help
922	  If you say Y here, you can use the 'debug' mount option to enable
923	  debugging output from the driver.
924
925config BFS_FS
926	tristate "BFS file system support (EXPERIMENTAL)"
927	depends on EXPERIMENTAL
928	help
929	  Boot File System (BFS) is a file system used under SCO UnixWare to
930	  allow the bootloader access to the kernel image and other important
931	  files during the boot process.  It is usually mounted under /stand
932	  and corresponds to the slice marked as "STAND" in the UnixWare
933	  partition.  You should say Y if you want to read or write the files
934	  on your /stand slice from within Linux.  You then also need to say Y
935	  to "UnixWare slices support", below.  More information about the BFS
936	  file system is contained in the file
937	  <file:Documentation/filesystems/bfs.txt>.
938
939	  If you don't know what this is about, say N.
940
941	  To compile this as a module, choose M here: the module will be called
942	  bfs.  Note that the file system of your root partition (the one
943	  containing the directory /) cannot be compiled as a module.
944
945
946
947config EFS_FS
948	tristate "EFS file system support (read only) (EXPERIMENTAL)"
949	depends on EXPERIMENTAL
950	help
951	  EFS is an older file system used for non-ISO9660 CD-ROMs and hard
952	  disk partitions by SGI's IRIX operating system (IRIX 6.0 and newer
953	  uses the XFS file system for hard disk partitions however).
954
955	  This implementation only offers read-only access. If you don't know
956	  what all this is about, it's safe to say N. For more information
957	  about EFS see its home page at <http://aeschi.ch.eu.org/efs/>.
958
959	  To compile the EFS file system support as a module, choose M here: the
960	  module will be called efs.
961
962config JFFS_FS
963	tristate "Journalling Flash File System (JFFS) support"
964	depends on MTD
965	help
966	  JFFS is the Journaling Flash File System developed by Axis
967	  Communications in Sweden, aimed at providing a crash/powerdown-safe
968	  file system for disk-less embedded devices. Further information is
969	  available at (<http://developer.axis.com/software/jffs/>).
970
971config JFFS_FS_VERBOSE
972	int "JFFS debugging verbosity (0 = quiet, 3 = noisy)"
973	depends on JFFS_FS
974	default "0"
975	help
976	  Determines the verbosity level of the JFFS debugging messages.
977
978config JFFS_PROC_FS
979	bool "JFFS stats available in /proc filesystem"
980	depends on JFFS_FS && PROC_FS
981	help
982	  Enabling this option will cause statistics from mounted JFFS file systems
983	  to be made available to the user in the /proc/fs/jffs/ directory.
984
985config JFFS2_FS
986	tristate "Journalling Flash File System v2 (JFFS2) support"
987	select CRC32
988	depends on MTD
989	help
990	  JFFS2 is the second generation of the Journalling Flash File System
991	  for use on diskless embedded devices. It provides improved wear
992	  levelling, compression and support for hard links. You cannot use
993	  this on normal block devices, only on 'MTD' devices.
994
995	  Further information on the design and implementation of JFFS2 is
996	  available at <http://sources.redhat.com/jffs2/>.
997
998config JFFS2_FS_DEBUG
999	int "JFFS2 debugging verbosity (0 = quiet, 2 = noisy)"
1000	depends on JFFS2_FS
1001	default "0"
1002	help
1003	  This controls the amount of debugging messages produced by the JFFS2
1004	  code. Set it to zero for use in production systems. For evaluation,
1005	  testing and debugging, it's advisable to set it to one. This will
1006	  enable a few assertions and will print debugging messages at the
1007	  KERN_DEBUG loglevel, where they won't normally be visible. Level 2
1008	  is unlikely to be useful - it enables extra debugging in certain
1009	  areas which at one point needed debugging, but when the bugs were
1010	  located and fixed, the detailed messages were relegated to level 2.
1011
1012	  If reporting bugs, please try to have available a full dump of the
1013	  messages at debug level 1 while the misbehaviour was occurring.
1014
1015config JFFS2_FS_WRITEBUFFER
1016	bool "JFFS2 write-buffering support"
1017	depends on JFFS2_FS
1018	default y
1019	help
1020	  This enables the write-buffering support in JFFS2.
1021
1022	  This functionality is required to support JFFS2 on the following
1023	  types of flash devices:
1024	    - NAND flash
1025	    - NOR flash with transparent ECC
1026	    - DataFlash
1027
1028config JFFS2_COMPRESSION_OPTIONS
1029	bool "Advanced compression options for JFFS2"
1030	depends on JFFS2_FS
1031	default n
1032	help
1033	  Enabling this option allows you to explicitly choose which
1034	  compression modules, if any, are enabled in JFFS2. Removing
1035	  compressors and mean you cannot read existing file systems,
1036	  and enabling experimental compressors can mean that you
1037	  write a file system which cannot be read by a standard kernel.
1038
1039	  If unsure, you should _definitely_ say 'N'.
1040
1041config JFFS2_ZLIB
1042	bool "JFFS2 ZLIB compression support" if JFFS2_COMPRESSION_OPTIONS
1043	select ZLIB_INFLATE
1044	select ZLIB_DEFLATE
1045	depends on JFFS2_FS
1046	default y
1047        help
1048          Zlib is designed to be a free, general-purpose, legally unencumbered,
1049          lossless data-compression library for use on virtually any computer
1050          hardware and operating system. See <http://www.gzip.org/zlib/> for
1051          further information.
1052
1053          Say 'Y' if unsure.
1054
1055config JFFS2_RTIME
1056	bool "JFFS2 RTIME compression support" if JFFS2_COMPRESSION_OPTIONS
1057	depends on JFFS2_FS
1058	default y
1059        help
1060          Rtime does manage to recompress already-compressed data. Say 'Y' if unsure.
1061
1062config JFFS2_RUBIN
1063	bool "JFFS2 RUBIN compression support" if JFFS2_COMPRESSION_OPTIONS
1064	depends on JFFS2_FS
1065	default n
1066        help
1067          RUBINMIPS and DYNRUBIN compressors. Say 'N' if unsure.
1068
1069choice
1070        prompt "JFFS2 default compression mode" if JFFS2_COMPRESSION_OPTIONS
1071        default JFFS2_CMODE_PRIORITY
1072        depends on JFFS2_FS
1073        help
1074          You can set here the default compression mode of JFFS2 from
1075          the available compression modes. Don't touch if unsure.
1076
1077config JFFS2_CMODE_NONE
1078        bool "no compression"
1079        help
1080          Uses no compression.
1081
1082config JFFS2_CMODE_PRIORITY
1083        bool "priority"
1084        help
1085          Tries the compressors in a predefinied order and chooses the first
1086          successful one.
1087
1088config JFFS2_CMODE_SIZE
1089        bool "size (EXPERIMENTAL)"
1090        help
1091          Tries all compressors and chooses the one which has the smallest
1092          result.
1093
1094endchoice
1095
1096config CRAMFS
1097	tristate "Compressed ROM file system support (cramfs)"
1098	select ZLIB_INFLATE
1099	help
1100	  Saying Y here includes support for CramFs (Compressed ROM File
1101	  System).  CramFs is designed to be a simple, small, and compressed
1102	  file system for ROM based embedded systems.  CramFs is read-only,
1103	  limited to 256MB file systems (with 16MB files), and doesn't support
1104	  16/32 bits uid/gid, hard links and timestamps.
1105
1106	  See <file:Documentation/filesystems/cramfs.txt> and
1107	  <file:fs/cramfs/README> for further information.
1108
1109	  To compile this as a module, choose M here: the module will be called
1110	  cramfs.  Note that the root file system (the one containing the
1111	  directory /) cannot be compiled as a module.
1112
1113	  If unsure, say N.
1114
1115config VXFS_FS
1116	tristate "FreeVxFS file system support (VERITAS VxFS(TM) compatible)"
1117	help
1118	  FreeVxFS is a file system driver that support the VERITAS VxFS(TM)
1119	  file system format.  VERITAS VxFS(TM) is the standard file system
1120	  of SCO UnixWare (and possibly others) and optionally available
1121	  for Sunsoft Solaris, HP-UX and many other operating systems.
1122	  Currently only readonly access is supported.
1123
1124	  NOTE: the file system type as used by mount(1), mount(2) and
1125	  fstab(5) is 'vxfs' as it describes the file system format, not
1126	  the actual driver.
1127
1128	  To compile this as a module, choose M here: the module will be
1129	  called freevxfs.  If unsure, say N.
1130
1131
1132config HPFS_FS
1133	tristate "OS/2 HPFS file system support"
1134	help
1135	  OS/2 is IBM's operating system for PC's, the same as Warp, and HPFS
1136	  is the file system used for organizing files on OS/2 hard disk
1137	  partitions. Say Y if you want to be able to read files from and
1138	  write files to an OS/2 HPFS partition on your hard drive. OS/2
1139	  floppies however are in regular MSDOS format, so you don't need this
1140	  option in order to be able to read them. Read
1141	  <file:Documentation/filesystems/hpfs.txt>.
1142
1143	  To compile this file system support as a module, choose M here: the
1144	  module will be called hpfs.  If unsure, say N.
1145
1146
1147
1148config QNX4FS_FS
1149	tristate "QNX4 file system support (read only)"
1150	help
1151	  This is the file system used by the real-time operating systems
1152	  QNX 4 and QNX 6 (the latter is also called QNX RTP).
1153	  Further information is available at <http://www.qnx.com/>.
1154	  Say Y if you intend to mount QNX hard disks or floppies.
1155	  Unless you say Y to "QNX4FS read-write support" below, you will
1156	  only be able to read these file systems.
1157
1158	  To compile this file system support as a module, choose M here: the
1159	  module will be called qnx4.
1160
1161	  If you don't know whether you need it, then you don't need it:
1162	  answer N.
1163
1164config QNX4FS_RW
1165	bool "QNX4FS write support (DANGEROUS)"
1166	depends on QNX4FS_FS && EXPERIMENTAL && BROKEN
1167	help
1168	  Say Y if you want to test write support for QNX4 file systems.
1169
1170	  It's currently broken, so for now:
1171	  answer N.
1172
1173
1174
1175config SYSV_FS
1176	tristate "System V/Xenix/V7/Coherent file system support"
1177	help
1178	  SCO, Xenix and Coherent are commercial Unix systems for Intel
1179	  machines, and Version 7 was used on the DEC PDP-11. Saying Y
1180	  here would allow you to read from their floppies and hard disk
1181	  partitions.
1182
1183	  If you have floppies or hard disk partitions like that, it is likely
1184	  that they contain binaries from those other Unix systems; in order
1185	  to run these binaries, you will want to install linux-abi which is a
1186	  a set of kernel modules that lets you run SCO, Xenix, Wyse,
1187	  UnixWare, Dell Unix and System V programs under Linux.  It is
1188	  available via FTP (user: ftp) from
1189	  <ftp://ftp.openlinux.org/pub/people/hch/linux-abi/>).
1190	  NOTE: that will work only for binaries from Intel-based systems;
1191	  PDP ones will have to wait until somebody ports Linux to -11 ;-)
1192
1193	  If you only intend to mount files from some other Unix over the
1194	  network using NFS, you don't need the System V file system support
1195	  (but you need NFS file system support obviously).
1196
1197	  Note that this option is generally not needed for floppies, since a
1198	  good portable way to transport files and directories between unixes
1199	  (and even other operating systems) is given by the tar program ("man
1200	  tar" or preferably "info tar").  Note also that this option has
1201	  nothing whatsoever to do with the option "System V IPC". Read about
1202	  the System V file system in
1203	  <file:Documentation/filesystems/sysv-fs.txt>.
1204	  Saying Y here will enlarge your kernel by about 27 KB.
1205
1206	  To compile this as a module, choose M here: the module will be called
1207	  sysv.
1208
1209	  If you haven't heard about all of this before, it's safe to say N.
1210
1211
1212
1213config UFS_FS
1214	tristate "UFS file system support (read only)"
1215	help
1216	  BSD and derivate versions of Unix (such as SunOS, FreeBSD, NetBSD,
1217	  OpenBSD and NeXTstep) use a file system called UFS. Some System V
1218	  Unixes can create and mount hard disk partitions and diskettes using
1219	  this file system as well. Saying Y here will allow you to read from
1220	  these partitions; if you also want to write to them, say Y to the
1221	  experimental "UFS file system write support", below. Please read the
1222	  file <file:Documentation/filesystems/ufs.txt> for more information.
1223
1224          The recently released UFS2 variant (used in FreeBSD 5.x) is
1225          READ-ONLY supported.
1226
1227	  If you only intend to mount files from some other Unix over the
1228	  network using NFS, you don't need the UFS file system support (but
1229	  you need NFS file system support obviously).
1230
1231	  Note that this option is generally not needed for floppies, since a
1232	  good portable way to transport files and directories between unixes
1233	  (and even other operating systems) is given by the tar program ("man
1234	  tar" or preferably "info tar").
1235
1236	  When accessing NeXTstep files, you may need to convert them from the
1237	  NeXT character set to the Latin1 character set; use the program
1238	  recode ("info recode") for this purpose.
1239
1240	  To compile the UFS file system support as a module, choose M here: the
1241	  module will be called ufs.
1242
1243	  If you haven't heard about all of this before, it's safe to say N.
1244
1245config UFS_FS_WRITE
1246	bool "UFS file system write support (DANGEROUS)"
1247	depends on UFS_FS && EXPERIMENTAL
1248	help
1249	  Say Y here if you want to try writing to UFS partitions. This is
1250	  experimental, so you should back up your UFS partitions beforehand.
1251
1252endmenu
1253
1254menu "Network File Systems"
1255	depends on NET
1256
1257config NFS_FS
1258	tristate "NFS file system support"
1259	depends on INET
1260	select LOCKD
1261	select SUNRPC
1262	select NFS_ACL_SUPPORT if NFS_V3_ACL
1263	help
1264	  If you are connected to some other (usually local) Unix computer
1265	  (using SLIP, PLIP, PPP or Ethernet) and want to mount files residing
1266	  on that computer (the NFS server) using the Network File Sharing
1267	  protocol, say Y. "Mounting files" means that the client can access
1268	  the files with usual UNIX commands as if they were sitting on the
1269	  client's hard disk. For this to work, the server must run the
1270	  programs nfsd and mountd (but does not need to have NFS file system
1271	  support enabled in its kernel). NFS is explained in the Network
1272	  Administrator's Guide, available from
1273	  <http://www.tldp.org/docs.html#guide>, on its man page: "man
1274	  nfs", and in the NFS-HOWTO.
1275
1276	  A superior but less widely used alternative to NFS is provided by
1277	  the Coda file system; see "Coda file system support" below.
1278
1279	  If you say Y here, you should have said Y to TCP/IP networking also.
1280	  This option would enlarge your kernel by about 27 KB.
1281
1282	  To compile this file system support as a module, choose M here: the
1283	  module will be called nfs.
1284
1285	  If you are configuring a diskless machine which will mount its root
1286	  file system over NFS at boot time, say Y here and to "Kernel
1287	  level IP autoconfiguration" above and to "Root file system on NFS"
1288	  below. You cannot compile this driver as a module in this case.
1289	  There are two packages designed for booting diskless machines over
1290	  the net: netboot, available from
1291	  <http://ftp1.sourceforge.net/netboot/>, and Etherboot,
1292	  available from <http://ftp1.sourceforge.net/etherboot/>.
1293
1294	  If you don't know what all this is about, say N.
1295
1296config NFS_V3
1297	bool "Provide NFSv3 client support"
1298	depends on NFS_FS
1299	help
1300	  Say Y here if you want your NFS client to be able to speak version
1301	  3 of the NFS protocol.
1302
1303	  If unsure, say Y.
1304
1305config NFS_V3_ACL
1306	bool "Provide client support for the NFSv3 ACL protocol extension"
1307	depends on NFS_V3
1308	help
1309	  Implement the NFSv3 ACL protocol extension for manipulating POSIX
1310	  Access Control Lists.  The server should also be compiled with
1311	  the NFSv3 ACL protocol extension; see the CONFIG_NFSD_V3_ACL option.
1312
1313	  If unsure, say N.
1314
1315config NFS_V4
1316	bool "Provide NFSv4 client support (EXPERIMENTAL)"
1317	depends on NFS_FS && EXPERIMENTAL
1318	select RPCSEC_GSS_KRB5
1319	help
1320	  Say Y here if you want your NFS client to be able to speak the newer
1321	  version 4 of the NFS protocol.
1322
1323	  Note: Requires auxiliary userspace daemons which may be found on
1324		http://www.citi.umich.edu/projects/nfsv4/
1325
1326	  If unsure, say N.
1327
1328config NFS_DIRECTIO
1329	bool "Allow direct I/O on NFS files (EXPERIMENTAL)"
1330	depends on NFS_FS && EXPERIMENTAL
1331	help
1332	  This option enables applications to perform uncached I/O on files
1333	  in NFS file systems using the O_DIRECT open() flag.  When O_DIRECT
1334	  is set for a file, its data is not cached in the system's page
1335	  cache.  Data is moved to and from user-level application buffers
1336	  directly.  Unlike local disk-based file systems, NFS O_DIRECT has
1337	  no alignment restrictions.
1338
1339	  Unless your program is designed to use O_DIRECT properly, you are
1340	  much better off allowing the NFS client to manage data caching for
1341	  you.  Misusing O_DIRECT can cause poor server performance or network
1342	  storms.  This kernel build option defaults OFF to avoid exposing
1343	  system administrators unwittingly to a potentially hazardous
1344	  feature.
1345
1346	  For more details on NFS O_DIRECT, see fs/nfs/direct.c.
1347
1348	  If unsure, say N.  This reduces the size of the NFS client, and
1349	  causes open() to return EINVAL if a file residing in NFS is
1350	  opened with the O_DIRECT flag.
1351
1352config NFSD
1353	tristate "NFS server support"
1354	depends on INET
1355	select LOCKD
1356	select SUNRPC
1357	select EXPORTFS
1358	select NFS_ACL_SUPPORT if NFSD_V3_ACL || NFSD_V2_ACL
1359	help
1360	  If you want your Linux box to act as an NFS *server*, so that other
1361	  computers on your local network which support NFS can access certain
1362	  directories on your box transparently, you have two options: you can
1363	  use the self-contained user space program nfsd, in which case you
1364	  should say N here, or you can say Y and use the kernel based NFS
1365	  server. The advantage of the kernel based solution is that it is
1366	  faster.
1367
1368	  In either case, you will need support software; the respective
1369	  locations are given in the file <file:Documentation/Changes> in the
1370	  NFS section.
1371
1372	  If you say Y here, you will get support for version 2 of the NFS
1373	  protocol (NFSv2). If you also want NFSv3, say Y to the next question
1374	  as well.
1375
1376	  Please read the NFS-HOWTO, available from
1377	  <http://www.tldp.org/docs.html#howto>.
1378
1379	  To compile the NFS server support as a module, choose M here: the
1380	  module will be called nfsd.  If unsure, say N.
1381
1382config NFSD_V2_ACL
1383	bool
1384	depends on NFSD
1385
1386config NFSD_V3
1387	bool "Provide NFSv3 server support"
1388	depends on NFSD
1389	help
1390	  If you would like to include the NFSv3 server as well as the NFSv2
1391	  server, say Y here.  If unsure, say Y.
1392
1393config NFSD_V3_ACL
1394	bool "Provide server support for the NFSv3 ACL protocol extension"
1395	depends on NFSD_V3
1396	select NFSD_V2_ACL
1397	help
1398	  Implement the NFSv3 ACL protocol extension for manipulating POSIX
1399	  Access Control Lists on exported file systems. NFS clients should
1400	  be compiled with the NFSv3 ACL protocol extension; see the
1401	  CONFIG_NFS_V3_ACL option.  If unsure, say N.
1402
1403config NFSD_V4
1404	bool "Provide NFSv4 server support (EXPERIMENTAL)"
1405	depends on NFSD_V3 && EXPERIMENTAL
1406	select NFSD_TCP
1407	select CRYPTO_MD5
1408	select CRYPTO
1409	select FS_POSIX_ACL
1410	help
1411	  If you would like to include the NFSv4 server as well as the NFSv2
1412	  and NFSv3 servers, say Y here.  This feature is experimental, and
1413	  should only be used if you are interested in helping to test NFSv4.
1414	  If unsure, say N.
1415
1416config NFSD_TCP
1417	bool "Provide NFS server over TCP support"
1418	depends on NFSD
1419	default y
1420	help
1421	  If you want your NFS server to support TCP connections, say Y here.
1422	  TCP connections usually perform better than the default UDP when
1423	  the network is lossy or congested.  If unsure, say Y.
1424
1425config ROOT_NFS
1426	bool "Root file system on NFS"
1427	depends on NFS_FS=y && IP_PNP
1428	help
1429	  If you want your Linux box to mount its whole root file system (the
1430	  one containing the directory /) from some other computer over the
1431	  net via NFS (presumably because your box doesn't have a hard disk),
1432	  say Y. Read <file:Documentation/nfsroot.txt> for details. It is
1433	  likely that in this case, you also want to say Y to "Kernel level IP
1434	  autoconfiguration" so that your box can discover its network address
1435	  at boot time.
1436
1437	  Most people say N here.
1438
1439config LOCKD
1440	tristate
1441
1442config LOCKD_V4
1443	bool
1444	depends on NFSD_V3 || NFS_V3
1445	default y
1446
1447config EXPORTFS
1448	tristate
1449
1450config NFS_ACL_SUPPORT
1451	tristate
1452	select FS_POSIX_ACL
1453
1454config NFS_COMMON
1455	bool
1456	depends on NFSD || NFS_FS
1457	default y
1458
1459config SUNRPC
1460	tristate
1461
1462config SUNRPC_GSS
1463	tristate
1464
1465config RPCSEC_GSS_KRB5
1466	tristate "Secure RPC: Kerberos V mechanism (EXPERIMENTAL)"
1467	depends on SUNRPC && EXPERIMENTAL
1468	select SUNRPC_GSS
1469	select CRYPTO
1470	select CRYPTO_MD5
1471	select CRYPTO_DES
1472	help
1473	  Provides for secure RPC calls by means of a gss-api
1474	  mechanism based on Kerberos V5. This is required for
1475	  NFSv4.
1476
1477	  Note: Requires an auxiliary userspace daemon which may be found on
1478		http://www.citi.umich.edu/projects/nfsv4/
1479
1480	  If unsure, say N.
1481
1482config RPCSEC_GSS_SPKM3
1483	tristate "Secure RPC: SPKM3 mechanism (EXPERIMENTAL)"
1484	depends on SUNRPC && EXPERIMENTAL
1485	select SUNRPC_GSS
1486	select CRYPTO
1487	select CRYPTO_MD5
1488	select CRYPTO_DES
1489	help
1490	  Provides for secure RPC calls by means of a gss-api
1491	  mechanism based on the SPKM3 public-key mechanism.
1492
1493	  Note: Requires an auxiliary userspace daemon which may be found on
1494	  	http://www.citi.umich.edu/projects/nfsv4/
1495
1496	  If unsure, say N.
1497
1498config SMB_FS
1499	tristate "SMB file system support (to mount Windows shares etc.)"
1500	depends on INET
1501	select NLS
1502	help
1503	  SMB (Server Message Block) is the protocol Windows for Workgroups
1504	  (WfW), Windows 95/98, Windows NT and OS/2 Lan Manager use to share
1505	  files and printers over local networks.  Saying Y here allows you to
1506	  mount their file systems (often called "shares" in this context) and
1507	  access them just like any other Unix directory.  Currently, this
1508	  works only if the Windows machines use TCP/IP as the underlying
1509	  transport protocol, and not NetBEUI.  For details, read
1510	  <file:Documentation/filesystems/smbfs.txt> and the SMB-HOWTO,
1511	  available from <http://www.tldp.org/docs.html#howto>.
1512
1513	  Note: if you just want your box to act as an SMB *server* and make
1514	  files and printing services available to Windows clients (which need
1515	  to have a TCP/IP stack), you don't need to say Y here; you can use
1516	  the program SAMBA (available from <ftp://ftp.samba.org/pub/samba/>)
1517	  for that.
1518
1519	  General information about how to connect Linux, Windows machines and
1520	  Macs is on the WWW at <http://www.eats.com/linux_mac_win.html>.
1521
1522	  To compile the SMB support as a module, choose M here: the module will
1523	  be called smbfs.  Most people say N, however.
1524
1525config SMB_NLS_DEFAULT
1526	bool "Use a default NLS"
1527	depends on SMB_FS
1528	help
1529	  Enabling this will make smbfs use nls translations by default. You
1530	  need to specify the local charset (CONFIG_NLS_DEFAULT) in the nls
1531	  settings and you need to give the default nls for the SMB server as
1532	  CONFIG_SMB_NLS_REMOTE.
1533
1534	  The nls settings can be changed at mount time, if your smbmount
1535	  supports that, using the codepage and iocharset parameters.
1536
1537	  smbmount from samba 2.2.0 or later supports this.
1538
1539config SMB_NLS_REMOTE
1540	string "Default Remote NLS Option"
1541	depends on SMB_NLS_DEFAULT
1542	default "cp437"
1543	help
1544	  This setting allows you to specify a default value for which
1545	  codepage the server uses. If this field is left blank no
1546	  translations will be done by default. The local codepage/charset
1547	  default to CONFIG_NLS_DEFAULT.
1548
1549	  The nls settings can be changed at mount time, if your smbmount
1550	  supports that, using the codepage and iocharset parameters.
1551
1552	  smbmount from samba 2.2.0 or later supports this.
1553
1554config CIFS
1555	tristate "CIFS support (advanced network filesystem for Samba, Window and other CIFS compliant servers)"
1556	depends on INET
1557	select NLS
1558	help
1559	  This is the client VFS module for the Common Internet File System
1560	  (CIFS) protocol which is the successor to the Server Message Block
1561	  (SMB) protocol, the native file sharing mechanism for most early
1562	  PC operating systems.  The CIFS protocol is fully supported by
1563	  file servers such as Windows 2000 (including Windows 2003, NT 4
1564	  and Windows XP) as well by Samba (which provides excellent CIFS
1565	  server support for Linux and many other operating systems). Currently
1566	  you must use the smbfs client filesystem to access older SMB servers
1567	  such as Windows 9x and OS/2.
1568
1569	  The intent of the cifs module is to provide an advanced
1570	  network file system client for mounting to CIFS compliant servers,
1571	  including support for dfs (hierarchical name space), secure per-user
1572	  session establishment, safe distributed caching (oplock), optional
1573	  packet signing, Unicode and other internationalization improvements,
1574	  and optional Winbind (nsswitch) integration. You do not need to enable
1575	  cifs if running only a (Samba) server. It is possible to enable both
1576	  smbfs and cifs (e.g. if you are using CIFS for accessing Windows 2003
1577	  and Samba 3 servers, and smbfs for accessing old servers). If you need
1578	  to mount to Samba or Windows 2003 servers from this machine, say Y.
1579
1580config CIFS_STATS
1581        bool "CIFS statistics"
1582        depends on CIFS
1583        help
1584          Enabling this option will cause statistics for each server share
1585	  mounted by the cifs client to be displayed in /proc/fs/cifs/Stats
1586
1587config CIFS_XATTR
1588        bool "CIFS extended attributes (EXPERIMENTAL)"
1589        depends on CIFS
1590        help
1591          Extended attributes are name:value pairs associated with inodes by
1592          the kernel or by users (see the attr(5) manual page, or visit
1593          <http://acl.bestbits.at/> for details).  CIFS maps the name of
1594          extended attributes beginning with the user namespace prefix
1595          to SMB/CIFS EAs. EAs are stored on Windows servers without the
1596          user namespace prefix, but their names are seen by Linux cifs clients
1597          prefaced by the user namespace prefix. The system namespace
1598          (used by some filesystems to store ACLs) is not supported at
1599          this time.
1600
1601          If unsure, say N.
1602
1603config CIFS_POSIX
1604        bool "CIFS POSIX Extensions (EXPERIMENTAL)"
1605        depends on CIFS_XATTR
1606        help
1607          Enabling this option will cause the cifs client to attempt to
1608	  negotiate a newer dialect with servers, such as Samba 3.0.5
1609	  or later, that optionally can handle more POSIX like (rather
1610	  than Windows like) file behavior.  It also enables
1611	  support for POSIX ACLs (getfacl and setfacl) to servers
1612	  (such as Samba 3.10 and later) which can negotiate
1613	  CIFS POSIX ACL support.  If unsure, say N.
1614
1615config CIFS_EXPERIMENTAL
1616	  bool "CIFS Experimental Features (EXPERIMENTAL)"
1617	  depends on CIFS
1618	  help
1619	    Enables cifs features under testing. These features
1620	    are highly experimental.  If unsure, say N.
1621
1622config NCP_FS
1623	tristate "NCP file system support (to mount NetWare volumes)"
1624	depends on IPX!=n || INET
1625	help
1626	  NCP (NetWare Core Protocol) is a protocol that runs over IPX and is
1627	  used by Novell NetWare clients to talk to file servers.  It is to
1628	  IPX what NFS is to TCP/IP, if that helps.  Saying Y here allows you
1629	  to mount NetWare file server volumes and to access them just like
1630	  any other Unix directory.  For details, please read the file
1631	  <file:Documentation/filesystems/ncpfs.txt> in the kernel source and
1632	  the IPX-HOWTO from <http://www.tldp.org/docs.html#howto>.
1633
1634	  You do not have to say Y here if you want your Linux box to act as a
1635	  file *server* for Novell NetWare clients.
1636
1637	  General information about how to connect Linux, Windows machines and
1638	  Macs is on the WWW at <http://www.eats.com/linux_mac_win.html>.
1639
1640	  To compile this as a module, choose M here: the module will be called
1641	  ncpfs.  Say N unless you are connected to a Novell network.
1642
1643source "fs/ncpfs/Kconfig"
1644
1645config CODA_FS
1646	tristate "Coda file system support (advanced network fs)"
1647	depends on INET
1648	help
1649	  Coda is an advanced network file system, similar to NFS in that it
1650	  enables you to mount file systems of a remote server and access them
1651	  with regular Unix commands as if they were sitting on your hard
1652	  disk.  Coda has several advantages over NFS: support for
1653	  disconnected operation (e.g. for laptops), read/write server
1654	  replication, security model for authentication and encryption,
1655	  persistent client caches and write back caching.
1656
1657	  If you say Y here, your Linux box will be able to act as a Coda
1658	  *client*.  You will need user level code as well, both for the
1659	  client and server.  Servers are currently user level, i.e. they need
1660	  no kernel support.  Please read
1661	  <file:Documentation/filesystems/coda.txt> and check out the Coda
1662	  home page <http://www.coda.cs.cmu.edu/>.
1663
1664	  To compile the coda client support as a module, choose M here: the
1665	  module will be called coda.
1666
1667config CODA_FS_OLD_API
1668	bool "Use 96-bit Coda file identifiers"
1669	depends on CODA_FS
1670	help
1671	  A new kernel-userspace API had to be introduced for Coda v6.0
1672	  to support larger 128-bit file identifiers as needed by the
1673	  new realms implementation.
1674
1675	  However this new API is not backward compatible with older
1676	  clients. If you really need to run the old Coda userspace
1677	  cache manager then say Y.
1678
1679	  For most cases you probably want to say N.
1680
1681config AFS_FS
1682# for fs/nls/Config.in
1683	tristate "Andrew File System support (AFS) (Experimental)"
1684	depends on INET && EXPERIMENTAL
1685	select RXRPC
1686	help
1687	  If you say Y here, you will get an experimental Andrew File System
1688	  driver. It currently only supports unsecured read-only AFS access.
1689
1690	  See <file:Documentation/filesystems/afs.txt> for more intormation.
1691
1692	  If unsure, say N.
1693
1694config RXRPC
1695	tristate
1696
1697endmenu
1698
1699menu "Partition Types"
1700
1701source "fs/partitions/Kconfig"
1702
1703endmenu
1704
1705source "fs/nls/Kconfig"
1706
1707endmenu
1708
1709