xref: /linux/fs/Kconfig (revision 2624f124b3b5d550ab2fbef7ee3bc0e1fed09722)
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.
386	  For further details, read the Quota mini-HOWTO, available from
387	  <http://www.tldp.org/docs.html#howto>, or the documentation provided
388	  with the quota tools. Probably the quota support is only useful for
389	  multi user systems. If unsure, say N.
390
391config QFMT_V1
392	tristate "Old quota format support"
393	depends on QUOTA
394	help
395	  This quota format was (is) used by kernels earlier than 2.4.22. If
396	  you have quota working and you don't want to convert to new quota
397	  format say Y here.
398
399config QFMT_V2
400	tristate "Quota format v2 support"
401	depends on QUOTA
402	help
403	  This quota format allows using quotas with 32-bit UIDs/GIDs. If you
404	  need this functionality say Y here.
405
406config QUOTACTL
407	bool
408	depends on XFS_QUOTA || QUOTA
409	default y
410
411config DNOTIFY
412	bool "Dnotify support" if EMBEDDED
413	default y
414	help
415	  Dnotify is a directory-based per-fd file change notification system
416	  that uses signals to communicate events to user-space.  There exist
417	  superior alternatives, but some applications may still rely on
418	  dnotify.
419
420	  Because of this, if unsure, say Y.
421
422config AUTOFS_FS
423	tristate "Kernel automounter support"
424	help
425	  The automounter is a tool to automatically mount remote file systems
426	  on demand. This implementation is partially kernel-based to reduce
427	  overhead in the already-mounted case; this is unlike the BSD
428	  automounter (amd), which is a pure user space daemon.
429
430	  To use the automounter you need the user-space tools from the autofs
431	  package; you can find the location in <file:Documentation/Changes>.
432	  You also want to answer Y to "NFS file system support", below.
433
434	  If you want to use the newer version of the automounter with more
435	  features, say N here and say Y to "Kernel automounter v4 support",
436	  below.
437
438	  To compile this support as a module, choose M here: the module will be
439	  called autofs.
440
441	  If you are not a part of a fairly large, distributed network, you
442	  probably do not need an automounter, and can say N here.
443
444config AUTOFS4_FS
445	tristate "Kernel automounter version 4 support (also supports v3)"
446	help
447	  The automounter is a tool to automatically mount remote file systems
448	  on demand. This implementation is partially kernel-based to reduce
449	  overhead in the already-mounted case; this is unlike the BSD
450	  automounter (amd), which is a pure user space daemon.
451
452	  To use the automounter you need the user-space tools from
453	  <ftp://ftp.kernel.org/pub/linux/daemons/autofs/v4/>; you also
454	  want to answer Y to "NFS file system support", below.
455
456	  To compile this support as a module, choose M here: the module will be
457	  called autofs4.  You will need to add "alias autofs autofs4" to your
458	  modules configuration file.
459
460	  If you are not a part of a fairly large, distributed network or
461	  don't have a laptop which needs to dynamically reconfigure to the
462	  local network, you probably do not need an automounter, and can say
463	  N here.
464
465menu "CD-ROM/DVD Filesystems"
466
467config ISO9660_FS
468	tristate "ISO 9660 CDROM file system support"
469	help
470	  This is the standard file system used on CD-ROMs.  It was previously
471	  known as "High Sierra File System" and is called "hsfs" on other
472	  Unix systems.  The so-called Rock-Ridge extensions which allow for
473	  long Unix filenames and symbolic links are also supported by this
474	  driver.  If you have a CD-ROM drive and want to do more with it than
475	  just listen to audio CDs and watch its LEDs, say Y (and read
476	  <file:Documentation/filesystems/isofs.txt> and the CD-ROM-HOWTO,
477	  available from <http://www.tldp.org/docs.html#howto>), thereby
478	  enlarging your kernel by about 27 KB; otherwise say N.
479
480	  To compile this file system support as a module, choose M here: the
481	  module will be called isofs.
482
483config JOLIET
484	bool "Microsoft Joliet CDROM extensions"
485	depends on ISO9660_FS
486	select NLS
487	help
488	  Joliet is a Microsoft extension for the ISO 9660 CD-ROM file system
489	  which allows for long filenames in unicode format (unicode is the
490	  new 16 bit character code, successor to ASCII, which encodes the
491	  characters of almost all languages of the world; see
492	  <http://www.unicode.org/> for more information).  Say Y here if you
493	  want to be able to read Joliet CD-ROMs under Linux.
494
495config ZISOFS
496	bool "Transparent decompression extension"
497	depends on ISO9660_FS
498	select ZLIB_INFLATE
499	help
500	  This is a Linux-specific extension to RockRidge which lets you store
501	  data in compressed form on a CD-ROM and have it transparently
502	  decompressed when the CD-ROM is accessed.  See
503	  <http://www.kernel.org/pub/linux/utils/fs/zisofs/> for the tools
504	  necessary to create such a filesystem.  Say Y here if you want to be
505	  able to read such compressed CD-ROMs.
506
507config ZISOFS_FS
508# for fs/nls/Config.in
509	tristate
510	depends on ZISOFS
511	default ISO9660_FS
512
513config UDF_FS
514	tristate "UDF file system support"
515	help
516	  This is the new file system used on some CD-ROMs and DVDs. Say Y if
517	  you intend to mount DVD discs or CDRW's written in packet mode, or
518	  if written to by other UDF utilities, such as DirectCD.
519	  Please read <file:Documentation/filesystems/udf.txt>.
520
521	  To compile this file system support as a module, choose M here: the
522	  module will be called udf.
523
524	  If unsure, say N.
525
526config UDF_NLS
527	bool
528	default y
529	depends on (UDF_FS=m && NLS) || (UDF_FS=y && NLS=y)
530
531endmenu
532
533menu "DOS/FAT/NT Filesystems"
534
535config FAT_FS
536	tristate
537	select NLS
538	help
539	  If you want to use one of the FAT-based file systems (the MS-DOS and
540	  VFAT (Windows 95) file systems), then you must say Y or M here
541	  to include FAT support. You will then be able to mount partitions or
542	  diskettes with FAT-based file systems and transparently access the
543	  files on them, i.e. MSDOS files will look and behave just like all
544	  other Unix files.
545
546	  This FAT support is not a file system in itself, it only provides
547	  the foundation for the other file systems. You will have to say Y or
548	  M to at least one of "MSDOS fs support" or "VFAT fs support" in
549	  order to make use of it.
550
551	  Another way to read and write MSDOS floppies and hard drive
552	  partitions from within Linux (but not transparently) is with the
553	  mtools ("man mtools") program suite. You don't need to say Y here in
554	  order to do that.
555
556	  If you need to move large files on floppies between a DOS and a
557	  Linux box, say Y here, mount the floppy under Linux with an MSDOS
558	  file system and use GNU tar's M option. GNU tar is a program
559	  available for Unix and DOS ("man tar" or "info tar").
560
561	  It is now also becoming possible to read and write compressed FAT
562	  file systems; read <file:Documentation/filesystems/fat_cvf.txt> for
563	  details.
564
565	  The FAT support will enlarge your kernel by about 37 KB. If unsure,
566	  say Y.
567
568	  To compile this as a module, choose M here: the module will be called
569	  fat.  Note that if you compile the FAT support as a module, you
570	  cannot compile any of the FAT-based file systems into the kernel
571	  -- they will have to be modules as well.
572
573config MSDOS_FS
574	tristate "MSDOS fs support"
575	select FAT_FS
576	help
577	  This allows you to mount MSDOS partitions of your hard drive (unless
578	  they are compressed; to access compressed MSDOS partitions under
579	  Linux, you can either use the DOS emulator DOSEMU, described in the
580	  DOSEMU-HOWTO, available from
581	  <http://www.tldp.org/docs.html#howto>, or try dmsdosfs in
582	  <ftp://ibiblio.org/pub/Linux/system/filesystems/dosfs/>. If you
583	  intend to use dosemu with a non-compressed MSDOS partition, say Y
584	  here) and MSDOS floppies. This means that file access becomes
585	  transparent, i.e. the MSDOS files look and behave just like all
586	  other Unix files.
587
588	  If you have Windows 95 or Windows NT installed on your MSDOS
589	  partitions, you should use the VFAT file system (say Y to "VFAT fs
590	  support" below), or you will not be able to see the long filenames
591	  generated by Windows 95 / Windows NT.
592
593	  This option will enlarge your kernel by about 7 KB. If unsure,
594	  answer Y. This will only work if you said Y to "DOS FAT fs support"
595	  as well. To compile this as a module, choose M here: the module will
596	  be called msdos.
597
598config VFAT_FS
599	tristate "VFAT (Windows-95) fs support"
600	select FAT_FS
601	help
602	  This option provides support for normal Windows file systems with
603	  long filenames.  That includes non-compressed FAT-based file systems
604	  used by Windows 95, Windows 98, Windows NT 4.0, and the Unix
605	  programs from the mtools package.
606
607	  The VFAT support enlarges your kernel by about 10 KB and it only
608	  works if you said Y to the "DOS FAT fs support" above.  Please read
609	  the file <file:Documentation/filesystems/vfat.txt> for details.  If
610	  unsure, say Y.
611
612	  To compile this as a module, choose M here: the module will be called
613	  vfat.
614
615config FAT_DEFAULT_CODEPAGE
616	int "Default codepage for FAT"
617	depends on MSDOS_FS || VFAT_FS
618	default 437
619	help
620	  This option should be set to the codepage of your FAT filesystems.
621	  It can be overridden with the "codepage" mount option.
622	  See <file:Documentation/filesystems/vfat.txt> for more information.
623
624config FAT_DEFAULT_IOCHARSET
625	string "Default iocharset for FAT"
626	depends on VFAT_FS
627	default "iso8859-1"
628	help
629	  Set this to the default input/output character set you'd
630	  like FAT to use. It should probably match the character set
631	  that most of your FAT filesystems use, and can be overridden
632	  with the "iocharset" mount option for FAT filesystems.
633	  Note that "utf8" is not recommended for FAT filesystems.
634	  If unsure, you shouldn't set "utf8" here.
635	  See <file:Documentation/filesystems/vfat.txt> for more information.
636
637config NTFS_FS
638	tristate "NTFS file system support"
639	select NLS
640	help
641	  NTFS is the file system of Microsoft Windows NT, 2000, XP and 2003.
642
643	  Saying Y or M here enables read support.  There is partial, but
644	  safe, write support available.  For write support you must also
645	  say Y to "NTFS write support" below.
646
647	  There are also a number of user-space tools available, called
648	  ntfsprogs.  These include ntfsundelete and ntfsresize, that work
649	  without NTFS support enabled in the kernel.
650
651	  This is a rewrite from scratch of Linux NTFS support and replaced
652	  the old NTFS code starting with Linux 2.5.11.  A backport to
653	  the Linux 2.4 kernel series is separately available as a patch
654	  from the project web site.
655
656	  For more information see <file:Documentation/filesystems/ntfs.txt>
657	  and <http://linux-ntfs.sourceforge.net/>.
658
659	  To compile this file system support as a module, choose M here: the
660	  module will be called ntfs.
661
662	  If you are not using Windows NT, 2000, XP or 2003 in addition to
663	  Linux on your computer it is safe to say N.
664
665config NTFS_DEBUG
666	bool "NTFS debugging support"
667	depends on NTFS_FS
668	help
669	  If you are experiencing any problems with the NTFS file system, say
670	  Y here.  This will result in additional consistency checks to be
671	  performed by the driver as well as additional debugging messages to
672	  be written to the system log.  Note that debugging messages are
673	  disabled by default.  To enable them, supply the option debug_msgs=1
674	  at the kernel command line when booting the kernel or as an option
675	  to insmod when loading the ntfs module.  Once the driver is active,
676	  you can enable debugging messages by doing (as root):
677	  echo 1 > /proc/sys/fs/ntfs-debug
678	  Replacing the "1" with "0" would disable debug messages.
679
680	  If you leave debugging messages disabled, this results in little
681	  overhead, but enabling debug messages results in very significant
682	  slowdown of the system.
683
684	  When reporting bugs, please try to have available a full dump of
685	  debugging messages while the misbehaviour was occurring.
686
687config NTFS_RW
688	bool "NTFS write support"
689	depends on NTFS_FS
690	help
691	  This enables the partial, but safe, write support in the NTFS driver.
692
693	  The only supported operation is overwriting existing files, without
694	  changing the file length.  No file or directory creation, deletion or
695	  renaming is possible.  Note only non-resident files can be written to
696	  so you may find that some very small files (<500 bytes or so) cannot
697	  be written to.
698
699	  While we cannot guarantee that it will not damage any data, we have
700	  so far not received a single report where the driver would have
701	  damaged someones data so we assume it is perfectly safe to use.
702
703	  Note:  While write support is safe in this version (a rewrite from
704	  scratch of the NTFS support), it should be noted that the old NTFS
705	  write support, included in Linux 2.5.10 and before (since 1997),
706	  is not safe.
707
708	  This is currently useful with TopologiLinux.  TopologiLinux is run
709	  on top of any DOS/Microsoft Windows system without partitioning your
710	  hard disk.  Unlike other Linux distributions TopologiLinux does not
711	  need its own partition.  For more information see
712	  <http://topologi-linux.sourceforge.net/>
713
714	  It is perfectly safe to say N here.
715
716endmenu
717
718menu "Pseudo filesystems"
719
720config PROC_FS
721	bool "/proc file system support"
722	help
723	  This is a virtual file system providing information about the status
724	  of the system. "Virtual" means that it doesn't take up any space on
725	  your hard disk: the files are created on the fly by the kernel when
726	  you try to access them. Also, you cannot read the files with older
727	  version of the program less: you need to use more or cat.
728
729	  It's totally cool; for example, "cat /proc/interrupts" gives
730	  information about what the different IRQs are used for at the moment
731	  (there is a small number of Interrupt ReQuest lines in your computer
732	  that are used by the attached devices to gain the CPU's attention --
733	  often a source of trouble if two devices are mistakenly configured
734	  to use the same IRQ). The program procinfo to display some
735	  information about your system gathered from the /proc file system.
736
737	  Before you can use the /proc file system, it has to be mounted,
738	  meaning it has to be given a location in the directory hierarchy.
739	  That location should be /proc. A command such as "mount -t proc proc
740	  /proc" or the equivalent line in /etc/fstab does the job.
741
742	  The /proc file system is explained in the file
743	  <file:Documentation/filesystems/proc.txt> and on the proc(5) manpage
744	  ("man 5 proc").
745
746	  This option will enlarge your kernel by about 67 KB. Several
747	  programs depend on this, so everyone should say Y here.
748
749config PROC_KCORE
750	bool "/proc/kcore support" if !ARM
751	depends on PROC_FS && MMU
752
753config PROC_VMCORE
754        bool "/proc/vmcore support (EXPERIMENTAL)"
755        depends on PROC_FS && EMBEDDED && EXPERIMENTAL && CRASH_DUMP
756        help
757        Exports the dump image of crashed kernel in ELF format.
758
759config SYSFS
760	bool "sysfs file system support" if EMBEDDED
761	default y
762	help
763	The sysfs filesystem is a virtual filesystem that the kernel uses to
764	export internal kernel objects, their attributes, and their
765	relationships to one another.
766
767	Users can use sysfs to ascertain useful information about the running
768	kernel, such as the devices the kernel has discovered on each bus and
769	which driver each is bound to. sysfs can also be used to tune devices
770	and other kernel subsystems.
771
772	Some system agents rely on the information in sysfs to operate.
773	/sbin/hotplug uses device and object attributes in sysfs to assist in
774	delegating policy decisions, like persistantly naming devices.
775
776	sysfs is currently used by the block subsystem to mount the root
777	partition.  If sysfs is disabled you must specify the boot device on
778	the kernel boot command line via its major and minor numbers.  For
779	example, "root=03:01" for /dev/hda1.
780
781	Designers of embedded systems may wish to say N here to conserve space.
782
783config TMPFS
784	bool "Virtual memory file system support (former shm fs)"
785	help
786	  Tmpfs is a file system which keeps all files in virtual memory.
787
788	  Everything in tmpfs is temporary in the sense that no files will be
789	  created on your hard drive. The files live in memory and swap
790	  space. If you unmount a tmpfs instance, everything stored therein is
791	  lost.
792
793	  See <file:Documentation/filesystems/tmpfs.txt> for details.
794
795config HUGETLBFS
796	bool "HugeTLB file system support"
797	depends X86 || IA64 || PPC64 || SPARC64 || SUPERH || X86_64 || BROKEN
798
799config HUGETLB_PAGE
800	def_bool HUGETLBFS
801
802config RAMFS
803	bool
804	default y
805	---help---
806	  Ramfs is a file system which keeps all files in RAM. It allows
807	  read and write access.
808
809	  It is more of an programming example than a useable file system.  If
810	  you need a file system which lives in RAM with limit checking use
811	  tmpfs.
812
813	  To compile this as a module, choose M here: the module will be called
814	  ramfs.
815
816config RELAYFS_FS
817	tristate "Relayfs file system support"
818	---help---
819	  Relayfs is a high-speed data relay filesystem designed to provide
820	  an efficient mechanism for tools and facilities to relay large
821	  amounts of data from kernel space to user space.
822
823	  To compile this code as a module, choose M here: the module will be
824	  called relayfs.
825
826	  If unsure, say N.
827
828endmenu
829
830menu "Miscellaneous filesystems"
831
832config ADFS_FS
833	tristate "ADFS file system support (EXPERIMENTAL)"
834	depends on EXPERIMENTAL
835	help
836	  The Acorn Disc Filing System is the standard file system of the
837	  RiscOS operating system which runs on Acorn's ARM-based Risc PC
838	  systems and the Acorn Archimedes range of machines. If you say Y
839	  here, Linux will be able to read from ADFS partitions on hard drives
840	  and from ADFS-formatted floppy discs. If you also want to be able to
841	  write to those devices, say Y to "ADFS write support" below.
842
843	  The ADFS partition should be the first partition (i.e.,
844	  /dev/[hs]d?1) on each of your drives. Please read the file
845	  <file:Documentation/filesystems/adfs.txt> for further details.
846
847	  To compile this code as a module, choose M here: the module will be
848	  called adfs.
849
850	  If unsure, say N.
851
852config ADFS_FS_RW
853	bool "ADFS write support (DANGEROUS)"
854	depends on ADFS_FS
855	help
856	  If you say Y here, you will be able to write to ADFS partitions on
857	  hard drives and ADFS-formatted floppy disks. This is experimental
858	  codes, so if you're unsure, say N.
859
860config AFFS_FS
861	tristate "Amiga FFS file system support (EXPERIMENTAL)"
862	depends on EXPERIMENTAL
863	help
864	  The Fast File System (FFS) is the common file system used on hard
865	  disks by Amiga(tm) systems since AmigaOS Version 1.3 (34.20).  Say Y
866	  if you want to be able to read and write files from and to an Amiga
867	  FFS partition on your hard drive.  Amiga floppies however cannot be
868	  read with this driver due to an incompatibility of the floppy
869	  controller used in an Amiga and the standard floppy controller in
870	  PCs and workstations. Read <file:Documentation/filesystems/affs.txt>
871	  and <file:fs/affs/Changes>.
872
873	  With this driver you can also mount disk files used by Bernd
874	  Schmidt's Un*X Amiga Emulator
875	  (<http://www.freiburg.linux.de/~uae/>).
876	  If you want to do this, you will also need to say Y or M to "Loop
877	  device support", above.
878
879	  To compile this file system support as a module, choose M here: the
880	  module will be called affs.  If unsure, say N.
881
882config HFS_FS
883	tristate "Apple Macintosh file system support (EXPERIMENTAL)"
884	depends on EXPERIMENTAL
885	help
886	  If you say Y here, you will be able to mount Macintosh-formatted
887	  floppy disks and hard drive partitions with full read-write access.
888	  Please read <file:fs/hfs/HFS.txt> to learn about the available mount
889	  options.
890
891	  To compile this file system support as a module, choose M here: the
892	  module will be called hfs.
893
894config HFSPLUS_FS
895	tristate "Apple Extended HFS file system support"
896	select NLS
897	select NLS_UTF8
898	help
899	  If you say Y here, you will be able to mount extended format
900	  Macintosh-formatted hard drive partitions with full read-write access.
901
902	  This file system is often called HFS+ and was introduced with
903	  MacOS 8. It includes all Mac specific filesystem data such as
904	  data forks and creator codes, but it also has several UNIX
905	  style features such as file ownership and permissions.
906
907config BEFS_FS
908	tristate "BeOS file system (BeFS) support (read only) (EXPERIMENTAL)"
909	depends on EXPERIMENTAL
910	select NLS
911	help
912	  The BeOS File System (BeFS) is the native file system of Be, Inc's
913	  BeOS. Notable features include support for arbitrary attributes
914	  on files and directories, and database-like indeces on selected
915	  attributes. (Also note that this driver doesn't make those features
916	  available at this time). It is a 64 bit filesystem, so it supports
917	  extremly large volumes and files.
918
919	  If you use this filesystem, you should also say Y to at least one
920	  of the NLS (native language support) options below.
921
922	  If you don't know what this is about, say N.
923
924	  To compile this as a module, choose M here: the module will be
925	  called befs.
926
927config BEFS_DEBUG
928	bool "Debug BeFS"
929	depends on BEFS_FS
930	help
931	  If you say Y here, you can use the 'debug' mount option to enable
932	  debugging output from the driver.
933
934config BFS_FS
935	tristate "BFS file system support (EXPERIMENTAL)"
936	depends on EXPERIMENTAL
937	help
938	  Boot File System (BFS) is a file system used under SCO UnixWare to
939	  allow the bootloader access to the kernel image and other important
940	  files during the boot process.  It is usually mounted under /stand
941	  and corresponds to the slice marked as "STAND" in the UnixWare
942	  partition.  You should say Y if you want to read or write the files
943	  on your /stand slice from within Linux.  You then also need to say Y
944	  to "UnixWare slices support", below.  More information about the BFS
945	  file system is contained in the file
946	  <file:Documentation/filesystems/bfs.txt>.
947
948	  If you don't know what this is about, say N.
949
950	  To compile this as a module, choose M here: the module will be called
951	  bfs.  Note that the file system of your root partition (the one
952	  containing the directory /) cannot be compiled as a module.
953
954
955
956config EFS_FS
957	tristate "EFS file system support (read only) (EXPERIMENTAL)"
958	depends on EXPERIMENTAL
959	help
960	  EFS is an older file system used for non-ISO9660 CD-ROMs and hard
961	  disk partitions by SGI's IRIX operating system (IRIX 6.0 and newer
962	  uses the XFS file system for hard disk partitions however).
963
964	  This implementation only offers read-only access. If you don't know
965	  what all this is about, it's safe to say N. For more information
966	  about EFS see its home page at <http://aeschi.ch.eu.org/efs/>.
967
968	  To compile the EFS file system support as a module, choose M here: the
969	  module will be called efs.
970
971config JFFS_FS
972	tristate "Journalling Flash File System (JFFS) support"
973	depends on MTD
974	help
975	  JFFS is the Journaling Flash File System developed by Axis
976	  Communications in Sweden, aimed at providing a crash/powerdown-safe
977	  file system for disk-less embedded devices. Further information is
978	  available at (<http://developer.axis.com/software/jffs/>).
979
980config JFFS_FS_VERBOSE
981	int "JFFS debugging verbosity (0 = quiet, 3 = noisy)"
982	depends on JFFS_FS
983	default "0"
984	help
985	  Determines the verbosity level of the JFFS debugging messages.
986
987config JFFS_PROC_FS
988	bool "JFFS stats available in /proc filesystem"
989	depends on JFFS_FS && PROC_FS
990	help
991	  Enabling this option will cause statistics from mounted JFFS file systems
992	  to be made available to the user in the /proc/fs/jffs/ directory.
993
994config JFFS2_FS
995	tristate "Journalling Flash File System v2 (JFFS2) support"
996	select CRC32
997	depends on MTD
998	help
999	  JFFS2 is the second generation of the Journalling Flash File System
1000	  for use on diskless embedded devices. It provides improved wear
1001	  levelling, compression and support for hard links. You cannot use
1002	  this on normal block devices, only on 'MTD' devices.
1003
1004	  Further information on the design and implementation of JFFS2 is
1005	  available at <http://sources.redhat.com/jffs2/>.
1006
1007config JFFS2_FS_DEBUG
1008	int "JFFS2 debugging verbosity (0 = quiet, 2 = noisy)"
1009	depends on JFFS2_FS
1010	default "0"
1011	help
1012	  This controls the amount of debugging messages produced by the JFFS2
1013	  code. Set it to zero for use in production systems. For evaluation,
1014	  testing and debugging, it's advisable to set it to one. This will
1015	  enable a few assertions and will print debugging messages at the
1016	  KERN_DEBUG loglevel, where they won't normally be visible. Level 2
1017	  is unlikely to be useful - it enables extra debugging in certain
1018	  areas which at one point needed debugging, but when the bugs were
1019	  located and fixed, the detailed messages were relegated to level 2.
1020
1021	  If reporting bugs, please try to have available a full dump of the
1022	  messages at debug level 1 while the misbehaviour was occurring.
1023
1024config JFFS2_FS_WRITEBUFFER
1025	bool "JFFS2 write-buffering support"
1026	depends on JFFS2_FS
1027	default y
1028	help
1029	  This enables the write-buffering support in JFFS2.
1030
1031	  This functionality is required to support JFFS2 on the following
1032	  types of flash devices:
1033	    - NAND flash
1034	    - NOR flash with transparent ECC
1035	    - DataFlash
1036
1037config JFFS2_COMPRESSION_OPTIONS
1038	bool "Advanced compression options for JFFS2"
1039	depends on JFFS2_FS
1040	default n
1041	help
1042	  Enabling this option allows you to explicitly choose which
1043	  compression modules, if any, are enabled in JFFS2. Removing
1044	  compressors and mean you cannot read existing file systems,
1045	  and enabling experimental compressors can mean that you
1046	  write a file system which cannot be read by a standard kernel.
1047
1048	  If unsure, you should _definitely_ say 'N'.
1049
1050config JFFS2_ZLIB
1051	bool "JFFS2 ZLIB compression support" if JFFS2_COMPRESSION_OPTIONS
1052	select ZLIB_INFLATE
1053	select ZLIB_DEFLATE
1054	depends on JFFS2_FS
1055	default y
1056        help
1057          Zlib is designed to be a free, general-purpose, legally unencumbered,
1058          lossless data-compression library for use on virtually any computer
1059          hardware and operating system. See <http://www.gzip.org/zlib/> for
1060          further information.
1061
1062          Say 'Y' if unsure.
1063
1064config JFFS2_RTIME
1065	bool "JFFS2 RTIME compression support" if JFFS2_COMPRESSION_OPTIONS
1066	depends on JFFS2_FS
1067	default y
1068        help
1069          Rtime does manage to recompress already-compressed data. Say 'Y' if unsure.
1070
1071config JFFS2_RUBIN
1072	bool "JFFS2 RUBIN compression support" if JFFS2_COMPRESSION_OPTIONS
1073	depends on JFFS2_FS
1074	default n
1075        help
1076          RUBINMIPS and DYNRUBIN compressors. Say 'N' if unsure.
1077
1078choice
1079        prompt "JFFS2 default compression mode" if JFFS2_COMPRESSION_OPTIONS
1080        default JFFS2_CMODE_PRIORITY
1081        depends on JFFS2_FS
1082        help
1083          You can set here the default compression mode of JFFS2 from
1084          the available compression modes. Don't touch if unsure.
1085
1086config JFFS2_CMODE_NONE
1087        bool "no compression"
1088        help
1089          Uses no compression.
1090
1091config JFFS2_CMODE_PRIORITY
1092        bool "priority"
1093        help
1094          Tries the compressors in a predefinied order and chooses the first
1095          successful one.
1096
1097config JFFS2_CMODE_SIZE
1098        bool "size (EXPERIMENTAL)"
1099        help
1100          Tries all compressors and chooses the one which has the smallest
1101          result.
1102
1103endchoice
1104
1105config CRAMFS
1106	tristate "Compressed ROM file system support (cramfs)"
1107	select ZLIB_INFLATE
1108	help
1109	  Saying Y here includes support for CramFs (Compressed ROM File
1110	  System).  CramFs is designed to be a simple, small, and compressed
1111	  file system for ROM based embedded systems.  CramFs is read-only,
1112	  limited to 256MB file systems (with 16MB files), and doesn't support
1113	  16/32 bits uid/gid, hard links and timestamps.
1114
1115	  See <file:Documentation/filesystems/cramfs.txt> and
1116	  <file:fs/cramfs/README> for further information.
1117
1118	  To compile this as a module, choose M here: the module will be called
1119	  cramfs.  Note that the root file system (the one containing the
1120	  directory /) cannot be compiled as a module.
1121
1122	  If unsure, say N.
1123
1124config VXFS_FS
1125	tristate "FreeVxFS file system support (VERITAS VxFS(TM) compatible)"
1126	help
1127	  FreeVxFS is a file system driver that support the VERITAS VxFS(TM)
1128	  file system format.  VERITAS VxFS(TM) is the standard file system
1129	  of SCO UnixWare (and possibly others) and optionally available
1130	  for Sunsoft Solaris, HP-UX and many other operating systems.
1131	  Currently only readonly access is supported.
1132
1133	  NOTE: the file system type as used by mount(1), mount(2) and
1134	  fstab(5) is 'vxfs' as it describes the file system format, not
1135	  the actual driver.
1136
1137	  To compile this as a module, choose M here: the module will be
1138	  called freevxfs.  If unsure, say N.
1139
1140
1141config HPFS_FS
1142	tristate "OS/2 HPFS file system support"
1143	help
1144	  OS/2 is IBM's operating system for PC's, the same as Warp, and HPFS
1145	  is the file system used for organizing files on OS/2 hard disk
1146	  partitions. Say Y if you want to be able to read files from and
1147	  write files to an OS/2 HPFS partition on your hard drive. OS/2
1148	  floppies however are in regular MSDOS format, so you don't need this
1149	  option in order to be able to read them. Read
1150	  <file:Documentation/filesystems/hpfs.txt>.
1151
1152	  To compile this file system support as a module, choose M here: the
1153	  module will be called hpfs.  If unsure, say N.
1154
1155
1156
1157config QNX4FS_FS
1158	tristate "QNX4 file system support (read only)"
1159	help
1160	  This is the file system used by the real-time operating systems
1161	  QNX 4 and QNX 6 (the latter is also called QNX RTP).
1162	  Further information is available at <http://www.qnx.com/>.
1163	  Say Y if you intend to mount QNX hard disks or floppies.
1164	  Unless you say Y to "QNX4FS read-write support" below, you will
1165	  only be able to read these file systems.
1166
1167	  To compile this file system support as a module, choose M here: the
1168	  module will be called qnx4.
1169
1170	  If you don't know whether you need it, then you don't need it:
1171	  answer N.
1172
1173config QNX4FS_RW
1174	bool "QNX4FS write support (DANGEROUS)"
1175	depends on QNX4FS_FS && EXPERIMENTAL && BROKEN
1176	help
1177	  Say Y if you want to test write support for QNX4 file systems.
1178
1179	  It's currently broken, so for now:
1180	  answer N.
1181
1182
1183
1184config SYSV_FS
1185	tristate "System V/Xenix/V7/Coherent file system support"
1186	help
1187	  SCO, Xenix and Coherent are commercial Unix systems for Intel
1188	  machines, and Version 7 was used on the DEC PDP-11. Saying Y
1189	  here would allow you to read from their floppies and hard disk
1190	  partitions.
1191
1192	  If you have floppies or hard disk partitions like that, it is likely
1193	  that they contain binaries from those other Unix systems; in order
1194	  to run these binaries, you will want to install linux-abi which is a
1195	  a set of kernel modules that lets you run SCO, Xenix, Wyse,
1196	  UnixWare, Dell Unix and System V programs under Linux.  It is
1197	  available via FTP (user: ftp) from
1198	  <ftp://ftp.openlinux.org/pub/people/hch/linux-abi/>).
1199	  NOTE: that will work only for binaries from Intel-based systems;
1200	  PDP ones will have to wait until somebody ports Linux to -11 ;-)
1201
1202	  If you only intend to mount files from some other Unix over the
1203	  network using NFS, you don't need the System V file system support
1204	  (but you need NFS file system support obviously).
1205
1206	  Note that this option is generally not needed for floppies, since a
1207	  good portable way to transport files and directories between unixes
1208	  (and even other operating systems) is given by the tar program ("man
1209	  tar" or preferably "info tar").  Note also that this option has
1210	  nothing whatsoever to do with the option "System V IPC". Read about
1211	  the System V file system in
1212	  <file:Documentation/filesystems/sysv-fs.txt>.
1213	  Saying Y here will enlarge your kernel by about 27 KB.
1214
1215	  To compile this as a module, choose M here: the module will be called
1216	  sysv.
1217
1218	  If you haven't heard about all of this before, it's safe to say N.
1219
1220
1221
1222config UFS_FS
1223	tristate "UFS file system support (read only)"
1224	help
1225	  BSD and derivate versions of Unix (such as SunOS, FreeBSD, NetBSD,
1226	  OpenBSD and NeXTstep) use a file system called UFS. Some System V
1227	  Unixes can create and mount hard disk partitions and diskettes using
1228	  this file system as well. Saying Y here will allow you to read from
1229	  these partitions; if you also want to write to them, say Y to the
1230	  experimental "UFS file system write support", below. Please read the
1231	  file <file:Documentation/filesystems/ufs.txt> for more information.
1232
1233          The recently released UFS2 variant (used in FreeBSD 5.x) is
1234          READ-ONLY supported.
1235
1236	  If you only intend to mount files from some other Unix over the
1237	  network using NFS, you don't need the UFS file system support (but
1238	  you need NFS file system support obviously).
1239
1240	  Note that this option is generally not needed for floppies, since a
1241	  good portable way to transport files and directories between unixes
1242	  (and even other operating systems) is given by the tar program ("man
1243	  tar" or preferably "info tar").
1244
1245	  When accessing NeXTstep files, you may need to convert them from the
1246	  NeXT character set to the Latin1 character set; use the program
1247	  recode ("info recode") for this purpose.
1248
1249	  To compile the UFS file system support as a module, choose M here: the
1250	  module will be called ufs.
1251
1252	  If you haven't heard about all of this before, it's safe to say N.
1253
1254config UFS_FS_WRITE
1255	bool "UFS file system write support (DANGEROUS)"
1256	depends on UFS_FS && EXPERIMENTAL
1257	help
1258	  Say Y here if you want to try writing to UFS partitions. This is
1259	  experimental, so you should back up your UFS partitions beforehand.
1260
1261endmenu
1262
1263menu "Network File Systems"
1264	depends on NET
1265
1266config NFS_FS
1267	tristate "NFS file system support"
1268	depends on INET
1269	select LOCKD
1270	select SUNRPC
1271	select NFS_ACL_SUPPORT if NFS_V3_ACL
1272	help
1273	  If you are connected to some other (usually local) Unix computer
1274	  (using SLIP, PLIP, PPP or Ethernet) and want to mount files residing
1275	  on that computer (the NFS server) using the Network File Sharing
1276	  protocol, say Y. "Mounting files" means that the client can access
1277	  the files with usual UNIX commands as if they were sitting on the
1278	  client's hard disk. For this to work, the server must run the
1279	  programs nfsd and mountd (but does not need to have NFS file system
1280	  support enabled in its kernel). NFS is explained in the Network
1281	  Administrator's Guide, available from
1282	  <http://www.tldp.org/docs.html#guide>, on its man page: "man
1283	  nfs", and in the NFS-HOWTO.
1284
1285	  A superior but less widely used alternative to NFS is provided by
1286	  the Coda file system; see "Coda file system support" below.
1287
1288	  If you say Y here, you should have said Y to TCP/IP networking also.
1289	  This option would enlarge your kernel by about 27 KB.
1290
1291	  To compile this file system support as a module, choose M here: the
1292	  module will be called nfs.
1293
1294	  If you are configuring a diskless machine which will mount its root
1295	  file system over NFS at boot time, say Y here and to "Kernel
1296	  level IP autoconfiguration" above and to "Root file system on NFS"
1297	  below. You cannot compile this driver as a module in this case.
1298	  There are two packages designed for booting diskless machines over
1299	  the net: netboot, available from
1300	  <http://ftp1.sourceforge.net/netboot/>, and Etherboot,
1301	  available from <http://ftp1.sourceforge.net/etherboot/>.
1302
1303	  If you don't know what all this is about, say N.
1304
1305config NFS_V3
1306	bool "Provide NFSv3 client support"
1307	depends on NFS_FS
1308	help
1309	  Say Y here if you want your NFS client to be able to speak version
1310	  3 of the NFS protocol.
1311
1312	  If unsure, say Y.
1313
1314config NFS_V3_ACL
1315	bool "Provide client support for the NFSv3 ACL protocol extension"
1316	depends on NFS_V3
1317	help
1318	  Implement the NFSv3 ACL protocol extension for manipulating POSIX
1319	  Access Control Lists.  The server should also be compiled with
1320	  the NFSv3 ACL protocol extension; see the CONFIG_NFSD_V3_ACL option.
1321
1322	  If unsure, say N.
1323
1324config NFS_V4
1325	bool "Provide NFSv4 client support (EXPERIMENTAL)"
1326	depends on NFS_FS && EXPERIMENTAL
1327	select RPCSEC_GSS_KRB5
1328	help
1329	  Say Y here if you want your NFS client to be able to speak the newer
1330	  version 4 of the NFS protocol.
1331
1332	  Note: Requires auxiliary userspace daemons which may be found on
1333		http://www.citi.umich.edu/projects/nfsv4/
1334
1335	  If unsure, say N.
1336
1337config NFS_DIRECTIO
1338	bool "Allow direct I/O on NFS files (EXPERIMENTAL)"
1339	depends on NFS_FS && EXPERIMENTAL
1340	help
1341	  This option enables applications to perform uncached I/O on files
1342	  in NFS file systems using the O_DIRECT open() flag.  When O_DIRECT
1343	  is set for a file, its data is not cached in the system's page
1344	  cache.  Data is moved to and from user-level application buffers
1345	  directly.  Unlike local disk-based file systems, NFS O_DIRECT has
1346	  no alignment restrictions.
1347
1348	  Unless your program is designed to use O_DIRECT properly, you are
1349	  much better off allowing the NFS client to manage data caching for
1350	  you.  Misusing O_DIRECT can cause poor server performance or network
1351	  storms.  This kernel build option defaults OFF to avoid exposing
1352	  system administrators unwittingly to a potentially hazardous
1353	  feature.
1354
1355	  For more details on NFS O_DIRECT, see fs/nfs/direct.c.
1356
1357	  If unsure, say N.  This reduces the size of the NFS client, and
1358	  causes open() to return EINVAL if a file residing in NFS is
1359	  opened with the O_DIRECT flag.
1360
1361config NFSD
1362	tristate "NFS server support"
1363	depends on INET
1364	select LOCKD
1365	select SUNRPC
1366	select EXPORTFS
1367	select NFS_ACL_SUPPORT if NFSD_V3_ACL || NFSD_V2_ACL
1368	help
1369	  If you want your Linux box to act as an NFS *server*, so that other
1370	  computers on your local network which support NFS can access certain
1371	  directories on your box transparently, you have two options: you can
1372	  use the self-contained user space program nfsd, in which case you
1373	  should say N here, or you can say Y and use the kernel based NFS
1374	  server. The advantage of the kernel based solution is that it is
1375	  faster.
1376
1377	  In either case, you will need support software; the respective
1378	  locations are given in the file <file:Documentation/Changes> in the
1379	  NFS section.
1380
1381	  If you say Y here, you will get support for version 2 of the NFS
1382	  protocol (NFSv2). If you also want NFSv3, say Y to the next question
1383	  as well.
1384
1385	  Please read the NFS-HOWTO, available from
1386	  <http://www.tldp.org/docs.html#howto>.
1387
1388	  To compile the NFS server support as a module, choose M here: the
1389	  module will be called nfsd.  If unsure, say N.
1390
1391config NFSD_V2_ACL
1392	bool
1393	depends on NFSD
1394
1395config NFSD_V3
1396	bool "Provide NFSv3 server support"
1397	depends on NFSD
1398	help
1399	  If you would like to include the NFSv3 server as well as the NFSv2
1400	  server, say Y here.  If unsure, say Y.
1401
1402config NFSD_V3_ACL
1403	bool "Provide server support for the NFSv3 ACL protocol extension"
1404	depends on NFSD_V3
1405	select NFSD_V2_ACL
1406	help
1407	  Implement the NFSv3 ACL protocol extension for manipulating POSIX
1408	  Access Control Lists on exported file systems. NFS clients should
1409	  be compiled with the NFSv3 ACL protocol extension; see the
1410	  CONFIG_NFS_V3_ACL option.  If unsure, say N.
1411
1412config NFSD_V4
1413	bool "Provide NFSv4 server support (EXPERIMENTAL)"
1414	depends on NFSD_V3 && EXPERIMENTAL
1415	select NFSD_TCP
1416	select CRYPTO_MD5
1417	select CRYPTO
1418	select FS_POSIX_ACL
1419	help
1420	  If you would like to include the NFSv4 server as well as the NFSv2
1421	  and NFSv3 servers, say Y here.  This feature is experimental, and
1422	  should only be used if you are interested in helping to test NFSv4.
1423	  If unsure, say N.
1424
1425config NFSD_TCP
1426	bool "Provide NFS server over TCP support"
1427	depends on NFSD
1428	default y
1429	help
1430	  If you want your NFS server to support TCP connections, say Y here.
1431	  TCP connections usually perform better than the default UDP when
1432	  the network is lossy or congested.  If unsure, say Y.
1433
1434config ROOT_NFS
1435	bool "Root file system on NFS"
1436	depends on NFS_FS=y && IP_PNP
1437	help
1438	  If you want your Linux box to mount its whole root file system (the
1439	  one containing the directory /) from some other computer over the
1440	  net via NFS (presumably because your box doesn't have a hard disk),
1441	  say Y. Read <file:Documentation/nfsroot.txt> for details. It is
1442	  likely that in this case, you also want to say Y to "Kernel level IP
1443	  autoconfiguration" so that your box can discover its network address
1444	  at boot time.
1445
1446	  Most people say N here.
1447
1448config LOCKD
1449	tristate
1450
1451config LOCKD_V4
1452	bool
1453	depends on NFSD_V3 || NFS_V3
1454	default y
1455
1456config EXPORTFS
1457	tristate
1458
1459config NFS_ACL_SUPPORT
1460	tristate
1461	select FS_POSIX_ACL
1462
1463config NFS_COMMON
1464	bool
1465	depends on NFSD || NFS_FS
1466	default y
1467
1468config SUNRPC
1469	tristate
1470
1471config SUNRPC_GSS
1472	tristate
1473
1474config RPCSEC_GSS_KRB5
1475	tristate "Secure RPC: Kerberos V mechanism (EXPERIMENTAL)"
1476	depends on SUNRPC && EXPERIMENTAL
1477	select SUNRPC_GSS
1478	select CRYPTO
1479	select CRYPTO_MD5
1480	select CRYPTO_DES
1481	help
1482	  Provides for secure RPC calls by means of a gss-api
1483	  mechanism based on Kerberos V5. This is required for
1484	  NFSv4.
1485
1486	  Note: Requires an auxiliary userspace daemon which may be found on
1487		http://www.citi.umich.edu/projects/nfsv4/
1488
1489	  If unsure, say N.
1490
1491config RPCSEC_GSS_SPKM3
1492	tristate "Secure RPC: SPKM3 mechanism (EXPERIMENTAL)"
1493	depends on SUNRPC && EXPERIMENTAL
1494	select SUNRPC_GSS
1495	select CRYPTO
1496	select CRYPTO_MD5
1497	select CRYPTO_DES
1498	help
1499	  Provides for secure RPC calls by means of a gss-api
1500	  mechanism based on the SPKM3 public-key mechanism.
1501
1502	  Note: Requires an auxiliary userspace daemon which may be found on
1503	  	http://www.citi.umich.edu/projects/nfsv4/
1504
1505	  If unsure, say N.
1506
1507config SMB_FS
1508	tristate "SMB file system support (to mount Windows shares etc.)"
1509	depends on INET
1510	select NLS
1511	help
1512	  SMB (Server Message Block) is the protocol Windows for Workgroups
1513	  (WfW), Windows 95/98, Windows NT and OS/2 Lan Manager use to share
1514	  files and printers over local networks.  Saying Y here allows you to
1515	  mount their file systems (often called "shares" in this context) and
1516	  access them just like any other Unix directory.  Currently, this
1517	  works only if the Windows machines use TCP/IP as the underlying
1518	  transport protocol, and not NetBEUI.  For details, read
1519	  <file:Documentation/filesystems/smbfs.txt> and the SMB-HOWTO,
1520	  available from <http://www.tldp.org/docs.html#howto>.
1521
1522	  Note: if you just want your box to act as an SMB *server* and make
1523	  files and printing services available to Windows clients (which need
1524	  to have a TCP/IP stack), you don't need to say Y here; you can use
1525	  the program SAMBA (available from <ftp://ftp.samba.org/pub/samba/>)
1526	  for that.
1527
1528	  General information about how to connect Linux, Windows machines and
1529	  Macs is on the WWW at <http://www.eats.com/linux_mac_win.html>.
1530
1531	  To compile the SMB support as a module, choose M here: the module will
1532	  be called smbfs.  Most people say N, however.
1533
1534config SMB_NLS_DEFAULT
1535	bool "Use a default NLS"
1536	depends on SMB_FS
1537	help
1538	  Enabling this will make smbfs use nls translations by default. You
1539	  need to specify the local charset (CONFIG_NLS_DEFAULT) in the nls
1540	  settings and you need to give the default nls for the SMB server as
1541	  CONFIG_SMB_NLS_REMOTE.
1542
1543	  The nls settings can be changed at mount time, if your smbmount
1544	  supports that, using the codepage and iocharset parameters.
1545
1546	  smbmount from samba 2.2.0 or later supports this.
1547
1548config SMB_NLS_REMOTE
1549	string "Default Remote NLS Option"
1550	depends on SMB_NLS_DEFAULT
1551	default "cp437"
1552	help
1553	  This setting allows you to specify a default value for which
1554	  codepage the server uses. If this field is left blank no
1555	  translations will be done by default. The local codepage/charset
1556	  default to CONFIG_NLS_DEFAULT.
1557
1558	  The nls settings can be changed at mount time, if your smbmount
1559	  supports that, using the codepage and iocharset parameters.
1560
1561	  smbmount from samba 2.2.0 or later supports this.
1562
1563config CIFS
1564	tristate "CIFS support (advanced network filesystem for Samba, Window and other CIFS compliant servers)"
1565	depends on INET
1566	select NLS
1567	help
1568	  This is the client VFS module for the Common Internet File System
1569	  (CIFS) protocol which is the successor to the Server Message Block
1570	  (SMB) protocol, the native file sharing mechanism for most early
1571	  PC operating systems.  The CIFS protocol is fully supported by
1572	  file servers such as Windows 2000 (including Windows 2003, NT 4
1573	  and Windows XP) as well by Samba (which provides excellent CIFS
1574	  server support for Linux and many other operating systems). Currently
1575	  you must use the smbfs client filesystem to access older SMB servers
1576	  such as Windows 9x and OS/2.
1577
1578	  The intent of the cifs module is to provide an advanced
1579	  network file system client for mounting to CIFS compliant servers,
1580	  including support for dfs (hierarchical name space), secure per-user
1581	  session establishment, safe distributed caching (oplock), optional
1582	  packet signing, Unicode and other internationalization improvements,
1583	  and optional Winbind (nsswitch) integration. You do not need to enable
1584	  cifs if running only a (Samba) server. It is possible to enable both
1585	  smbfs and cifs (e.g. if you are using CIFS for accessing Windows 2003
1586	  and Samba 3 servers, and smbfs for accessing old servers). If you need
1587	  to mount to Samba or Windows 2003 servers from this machine, say Y.
1588
1589config CIFS_STATS
1590        bool "CIFS statistics"
1591        depends on CIFS
1592        help
1593          Enabling this option will cause statistics for each server share
1594	  mounted by the cifs client to be displayed in /proc/fs/cifs/Stats
1595
1596config CIFS_XATTR
1597        bool "CIFS extended attributes (EXPERIMENTAL)"
1598        depends on CIFS
1599        help
1600          Extended attributes are name:value pairs associated with inodes by
1601          the kernel or by users (see the attr(5) manual page, or visit
1602          <http://acl.bestbits.at/> for details).  CIFS maps the name of
1603          extended attributes beginning with the user namespace prefix
1604          to SMB/CIFS EAs. EAs are stored on Windows servers without the
1605          user namespace prefix, but their names are seen by Linux cifs clients
1606          prefaced by the user namespace prefix. The system namespace
1607          (used by some filesystems to store ACLs) is not supported at
1608          this time.
1609
1610          If unsure, say N.
1611
1612config CIFS_POSIX
1613        bool "CIFS POSIX Extensions (EXPERIMENTAL)"
1614        depends on CIFS_XATTR
1615        help
1616          Enabling this option will cause the cifs client to attempt to
1617	  negotiate a newer dialect with servers, such as Samba 3.0.5
1618	  or later, that optionally can handle more POSIX like (rather
1619	  than Windows like) file behavior.  It also enables
1620	  support for POSIX ACLs (getfacl and setfacl) to servers
1621	  (such as Samba 3.10 and later) which can negotiate
1622	  CIFS POSIX ACL support.  If unsure, say N.
1623
1624config CIFS_EXPERIMENTAL
1625	  bool "CIFS Experimental Features (EXPERIMENTAL)"
1626	  depends on CIFS
1627	  help
1628	    Enables cifs features under testing. These features
1629	    are highly experimental.  If unsure, say N.
1630
1631config NCP_FS
1632	tristate "NCP file system support (to mount NetWare volumes)"
1633	depends on IPX!=n || INET
1634	help
1635	  NCP (NetWare Core Protocol) is a protocol that runs over IPX and is
1636	  used by Novell NetWare clients to talk to file servers.  It is to
1637	  IPX what NFS is to TCP/IP, if that helps.  Saying Y here allows you
1638	  to mount NetWare file server volumes and to access them just like
1639	  any other Unix directory.  For details, please read the file
1640	  <file:Documentation/filesystems/ncpfs.txt> in the kernel source and
1641	  the IPX-HOWTO from <http://www.tldp.org/docs.html#howto>.
1642
1643	  You do not have to say Y here if you want your Linux box to act as a
1644	  file *server* for Novell NetWare clients.
1645
1646	  General information about how to connect Linux, Windows machines and
1647	  Macs is on the WWW at <http://www.eats.com/linux_mac_win.html>.
1648
1649	  To compile this as a module, choose M here: the module will be called
1650	  ncpfs.  Say N unless you are connected to a Novell network.
1651
1652source "fs/ncpfs/Kconfig"
1653
1654config CODA_FS
1655	tristate "Coda file system support (advanced network fs)"
1656	depends on INET
1657	help
1658	  Coda is an advanced network file system, similar to NFS in that it
1659	  enables you to mount file systems of a remote server and access them
1660	  with regular Unix commands as if they were sitting on your hard
1661	  disk.  Coda has several advantages over NFS: support for
1662	  disconnected operation (e.g. for laptops), read/write server
1663	  replication, security model for authentication and encryption,
1664	  persistent client caches and write back caching.
1665
1666	  If you say Y here, your Linux box will be able to act as a Coda
1667	  *client*.  You will need user level code as well, both for the
1668	  client and server.  Servers are currently user level, i.e. they need
1669	  no kernel support.  Please read
1670	  <file:Documentation/filesystems/coda.txt> and check out the Coda
1671	  home page <http://www.coda.cs.cmu.edu/>.
1672
1673	  To compile the coda client support as a module, choose M here: the
1674	  module will be called coda.
1675
1676config CODA_FS_OLD_API
1677	bool "Use 96-bit Coda file identifiers"
1678	depends on CODA_FS
1679	help
1680	  A new kernel-userspace API had to be introduced for Coda v6.0
1681	  to support larger 128-bit file identifiers as needed by the
1682	  new realms implementation.
1683
1684	  However this new API is not backward compatible with older
1685	  clients. If you really need to run the old Coda userspace
1686	  cache manager then say Y.
1687
1688	  For most cases you probably want to say N.
1689
1690config AFS_FS
1691# for fs/nls/Config.in
1692	tristate "Andrew File System support (AFS) (Experimental)"
1693	depends on INET && EXPERIMENTAL
1694	select RXRPC
1695	help
1696	  If you say Y here, you will get an experimental Andrew File System
1697	  driver. It currently only supports unsecured read-only AFS access.
1698
1699	  See <file:Documentation/filesystems/afs.txt> for more intormation.
1700
1701	  If unsure, say N.
1702
1703config RXRPC
1704	tristate
1705
1706endmenu
1707
1708menu "Partition Types"
1709
1710source "fs/partitions/Kconfig"
1711
1712endmenu
1713
1714source "fs/nls/Kconfig"
1715
1716endmenu
1717
1718