xref: /linux/fs/Kconfig (revision 5f4123be3cdb1dbd77fa9d6d2bb96bb9689a0a19)
1#
2# File system configuration
3#
4
5menu "File systems"
6
7if BLOCK
8
9config EXT2_FS
10	tristate "Second extended fs support"
11	help
12	  Ext2 is a standard Linux file system for hard disks.
13
14	  To compile this file system support as a module, choose M here: the
15	  module will be called ext2.
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 && MMU
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	select JBD
74	help
75	  This is the journalling version of the Second extended file system
76	  (often called ext3), the de facto standard Linux file system
77	  (method to organize files on a storage device) for hard disks.
78
79	  The journalling code included in this driver means you do not have
80	  to run e2fsck (file system checker) on your file systems after a
81	  crash.  The journal keeps track of any changes that were being made
82	  at the time the system crashed, and can ensure that your file system
83	  is consistent without the need for a lengthy check.
84
85	  Other than adding the journal to the file system, the on-disk format
86	  of ext3 is identical to ext2.  It is possible to freely switch
87	  between using the ext3 driver and the ext2 driver, as long as the
88	  file system has been cleanly unmounted, or e2fsck is run on the file
89	  system.
90
91	  To add a journal on an existing ext2 file system or change the
92	  behavior of ext3 file systems, you can use the tune2fs utility ("man
93	  tune2fs").  To modify attributes of files and directories on ext3
94	  file systems, use chattr ("man chattr").  You need to be using
95	  e2fsprogs version 1.20 or later in order to create ext3 journals
96	  (available at <http://sourceforge.net/projects/e2fsprogs/>).
97
98	  To compile this file system support as a module, choose M here: the
99	  module will be called ext3.
100
101config EXT3_FS_XATTR
102	bool "Ext3 extended attributes"
103	depends on EXT3_FS
104	default y
105	help
106	  Extended attributes are name:value pairs associated with inodes by
107	  the kernel or by users (see the attr(5) manual page, or visit
108	  <http://acl.bestbits.at/> for details).
109
110	  If unsure, say N.
111
112	  You need this for POSIX ACL support on ext3.
113
114config EXT3_FS_POSIX_ACL
115	bool "Ext3 POSIX Access Control Lists"
116	depends on EXT3_FS_XATTR
117	select FS_POSIX_ACL
118	help
119	  Posix Access Control Lists (ACLs) support permissions for users and
120	  groups beyond the owner/group/world scheme.
121
122	  To learn more about Access Control Lists, visit the Posix ACLs for
123	  Linux website <http://acl.bestbits.at/>.
124
125	  If you don't know what Access Control Lists are, say N
126
127config EXT3_FS_SECURITY
128	bool "Ext3 Security Labels"
129	depends on EXT3_FS_XATTR
130	help
131	  Security labels support alternative access control models
132	  implemented by security modules like SELinux.  This option
133	  enables an extended attribute handler for file security
134	  labels in the ext3 filesystem.
135
136	  If you are not using a security module that requires using
137	  extended attributes for file security labels, say N.
138
139config EXT4_FS
140	tristate "The Extended 4 (ext4) filesystem"
141	select JBD2
142	select CRC16
143	help
144	  This is the next generation of the ext3 filesystem.
145
146	  Unlike the change from ext2 filesystem to ext3 filesystem,
147	  the on-disk format of ext4 is not forwards compatible with
148	  ext3; it is based on extent maps and it supports 48-bit
149	  physical block numbers.  The ext4 filesystem also supports delayed
150	  allocation, persistent preallocation, high resolution time stamps,
151	  and a number of other features to improve performance and speed
152	  up fsck time.  For more information, please see the web pages at
153	  http://ext4.wiki.kernel.org.
154
155	  The ext4 filesystem will support mounting an ext3
156	  filesystem; while there will be some performance gains from
157	  the delayed allocation and inode table readahead, the best
158	  performance gains will require enabling ext4 features in the
159	  filesystem, or formating a new filesystem as an ext4
160	  filesystem initially.
161
162	  To compile this file system support as a module, choose M here. The
163	  module will be called ext4dev.
164
165	  If unsure, say N.
166
167config EXT4DEV_COMPAT
168	bool "Enable ext4dev compatibility"
169	depends on EXT4_FS
170	help
171	  Starting with 2.6.28, the name of the ext4 filesystem was
172	  renamed from ext4dev to ext4.  Unfortunately there are some
173	  legacy userspace programs (such as klibc's fstype) have
174	  "ext4dev" hardcoded.
175
176	  To enable backwards compatibility so that systems that are
177	  still expecting to mount ext4 filesystems using ext4dev,
178	  chose Y here.   This feature will go away by 2.6.31, so
179	  please arrange to get your userspace programs fixed!
180
181config EXT4_FS_XATTR
182	bool "Ext4 extended attributes"
183	depends on EXT4_FS
184	default y
185	help
186	  Extended attributes are name:value pairs associated with inodes by
187	  the kernel or by users (see the attr(5) manual page, or visit
188	  <http://acl.bestbits.at/> for details).
189
190	  If unsure, say N.
191
192	  You need this for POSIX ACL support on ext4.
193
194config EXT4_FS_POSIX_ACL
195	bool "Ext4 POSIX Access Control Lists"
196	depends on EXT4_FS_XATTR
197	select FS_POSIX_ACL
198	help
199	  POSIX Access Control Lists (ACLs) support permissions for users and
200	  groups beyond the owner/group/world scheme.
201
202	  To learn more about Access Control Lists, visit the POSIX ACLs for
203	  Linux website <http://acl.bestbits.at/>.
204
205	  If you don't know what Access Control Lists are, say N
206
207config EXT4_FS_SECURITY
208	bool "Ext4 Security Labels"
209	depends on EXT4_FS_XATTR
210	help
211	  Security labels support alternative access control models
212	  implemented by security modules like SELinux.  This option
213	  enables an extended attribute handler for file security
214	  labels in the ext4 filesystem.
215
216	  If you are not using a security module that requires using
217	  extended attributes for file security labels, say N.
218
219config JBD
220	tristate
221	help
222	  This is a generic journalling layer for block devices.  It is
223	  currently used by the ext3 file system, but it could also be
224	  used to add journal support to other file systems or block
225	  devices such as RAID or LVM.
226
227	  If you are using the ext3 file system, you need to say Y here.
228	  If you are not using ext3 then you will probably want to say N.
229
230	  To compile this device as a module, choose M here: the module will be
231	  called jbd.  If you are compiling ext3 into the kernel, you
232	  cannot compile this code as a module.
233
234config JBD_DEBUG
235	bool "JBD (ext3) debugging support"
236	depends on JBD && DEBUG_FS
237	help
238	  If you are using the ext3 journaled file system (or potentially any
239	  other file system/device using JBD), this option allows you to
240	  enable debugging output while the system is running, in order to
241	  help track down any problems you are having.  By default the
242	  debugging output will be turned off.
243
244	  If you select Y here, then you will be able to turn on debugging
245	  with "echo N > /sys/kernel/debug/jbd/jbd-debug", where N is a
246	  number between 1 and 5, the higher the number, the more debugging
247	  output is generated.  To turn debugging off again, do
248	  "echo 0 > /sys/kernel/debug/jbd/jbd-debug".
249
250config JBD2
251	tristate
252	select CRC32
253	help
254	  This is a generic journaling layer for block devices that support
255	  both 32-bit and 64-bit block numbers.  It is currently used by
256	  the ext4 and OCFS2 filesystems, but it could also be used to add
257	  journal support to other file systems or block devices such
258	  as RAID or LVM.
259
260	  If you are using ext4 or OCFS2, you need to say Y here.
261	  If you are not using ext4 or OCFS2 then you will
262	  probably want to say N.
263
264	  To compile this device as a module, choose M here. The module will be
265	  called jbd2.  If you are compiling ext4 or OCFS2 into the kernel,
266	  you cannot compile this code as a module.
267
268config JBD2_DEBUG
269	bool "JBD2 (ext4) debugging support"
270	depends on JBD2 && DEBUG_FS
271	help
272	  If you are using the ext4 journaled file system (or
273	  potentially any other filesystem/device using JBD2), this option
274	  allows you to enable debugging output while the system is running,
275	  in order to help track down any problems you are having.
276	  By default, the debugging output will be turned off.
277
278	  If you select Y here, then you will be able to turn on debugging
279	  with "echo N > /sys/kernel/debug/jbd2/jbd2-debug", where N is a
280	  number between 1 and 5. The higher the number, the more debugging
281	  output is generated.  To turn debugging off again, do
282	  "echo 0 > /sys/kernel/debug/jbd2/jbd2-debug".
283
284config FS_MBCACHE
285# Meta block cache for Extended Attributes (ext2/ext3/ext4)
286	tristate
287	depends on EXT2_FS_XATTR || EXT3_FS_XATTR || EXT4_FS_XATTR
288	default y if EXT2_FS=y || EXT3_FS=y || EXT4_FS=y
289	default m if EXT2_FS=m || EXT3_FS=m || EXT4_FS=m
290
291config REISERFS_FS
292	tristate "Reiserfs support"
293	help
294	  Stores not just filenames but the files themselves in a balanced
295	  tree.  Uses journalling.
296
297	  Balanced trees are more efficient than traditional file system
298	  architectural foundations.
299
300	  In general, ReiserFS is as fast as ext2, but is very efficient with
301	  large directories and small files.  Additional patches are needed
302	  for NFS and quotas, please see <http://www.namesys.com/> for links.
303
304	  It is more easily extended to have features currently found in
305	  database and keyword search systems than block allocation based file
306	  systems are.  The next version will be so extended, and will support
307	  plugins consistent with our motto ``It takes more than a license to
308	  make source code open.''
309
310	  Read <http://www.namesys.com/> to learn more about reiserfs.
311
312	  Sponsored by Threshold Networks, Emusic.com, and Bigstorage.com.
313
314	  If you like it, you can pay us to add new features to it that you
315	  need, buy a support contract, or pay us to port it to another OS.
316
317config REISERFS_CHECK
318	bool "Enable reiserfs debug mode"
319	depends on REISERFS_FS
320	help
321	  If you set this to Y, then ReiserFS will perform every check it can
322	  possibly imagine of its internal consistency throughout its
323	  operation.  It will also go substantially slower.  More than once we
324	  have forgotten that this was on, and then gone despondent over the
325	  latest benchmarks.:-) Use of this option allows our team to go all
326	  out in checking for consistency when debugging without fear of its
327	  effect on end users.  If you are on the verge of sending in a bug
328	  report, say Y and you might get a useful error message.  Almost
329	  everyone should say N.
330
331config REISERFS_PROC_INFO
332	bool "Stats in /proc/fs/reiserfs"
333	depends on REISERFS_FS && PROC_FS
334	help
335	  Create under /proc/fs/reiserfs a hierarchy of files, displaying
336	  various ReiserFS statistics and internal data at the expense of
337	  making your kernel or module slightly larger (+8 KB). This also
338	  increases the amount of kernel memory required for each mount.
339	  Almost everyone but ReiserFS developers and people fine-tuning
340	  reiserfs or tracing problems should say N.
341
342config REISERFS_FS_XATTR
343	bool "ReiserFS extended attributes"
344	depends on REISERFS_FS
345	help
346	  Extended attributes are name:value pairs associated with inodes by
347	  the kernel or by users (see the attr(5) manual page, or visit
348	  <http://acl.bestbits.at/> for details).
349
350	  If unsure, say N.
351
352config REISERFS_FS_POSIX_ACL
353	bool "ReiserFS POSIX Access Control Lists"
354	depends on REISERFS_FS_XATTR
355	select FS_POSIX_ACL
356	help
357	  Posix Access Control Lists (ACLs) support permissions for users and
358	  groups beyond the owner/group/world scheme.
359
360	  To learn more about Access Control Lists, visit the Posix ACLs for
361	  Linux website <http://acl.bestbits.at/>.
362
363	  If you don't know what Access Control Lists are, say N
364
365config REISERFS_FS_SECURITY
366	bool "ReiserFS Security Labels"
367	depends on REISERFS_FS_XATTR
368	help
369	  Security labels support alternative access control models
370	  implemented by security modules like SELinux.  This option
371	  enables an extended attribute handler for file security
372	  labels in the ReiserFS filesystem.
373
374	  If you are not using a security module that requires using
375	  extended attributes for file security labels, say N.
376
377config JFS_FS
378	tristate "JFS filesystem support"
379	select NLS
380	help
381	  This is a port of IBM's Journaled Filesystem .  More information is
382	  available in the file <file:Documentation/filesystems/jfs.txt>.
383
384	  If you do not intend to use the JFS filesystem, say N.
385
386config JFS_POSIX_ACL
387	bool "JFS POSIX Access Control Lists"
388	depends on JFS_FS
389	select FS_POSIX_ACL
390	help
391	  Posix Access Control Lists (ACLs) support permissions for users and
392	  groups beyond the owner/group/world scheme.
393
394	  To learn more about Access Control Lists, visit the Posix ACLs for
395	  Linux website <http://acl.bestbits.at/>.
396
397	  If you don't know what Access Control Lists are, say N
398
399config JFS_SECURITY
400	bool "JFS Security Labels"
401	depends on JFS_FS
402	help
403	  Security labels support alternative access control models
404	  implemented by security modules like SELinux.  This option
405	  enables an extended attribute handler for file security
406	  labels in the jfs filesystem.
407
408	  If you are not using a security module that requires using
409	  extended attributes for file security labels, say N.
410
411config JFS_DEBUG
412	bool "JFS debugging"
413	depends on JFS_FS
414	help
415	  If you are experiencing any problems with the JFS filesystem, say
416	  Y here.  This will result in additional debugging messages to be
417	  written to the system log.  Under normal circumstances, this
418	  results in very little overhead.
419
420config JFS_STATISTICS
421	bool "JFS statistics"
422	depends on JFS_FS
423	help
424	  Enabling this option will cause statistics from the JFS file system
425	  to be made available to the user in the /proc/fs/jfs/ directory.
426
427config FS_POSIX_ACL
428# Posix ACL utility routines (for now, only ext2/ext3/jfs/reiserfs/nfs4)
429#
430# NOTE: you can implement Posix ACLs without these helpers (XFS does).
431# 	Never use this symbol for ifdefs.
432#
433	bool
434	default n
435
436config FILE_LOCKING
437	bool "Enable POSIX file locking API" if EMBEDDED
438	default y
439	help
440	  This option enables standard file locking support, required
441          for filesystems like NFS and for the flock() system
442          call. Disabling this option saves about 11k.
443
444source "fs/xfs/Kconfig"
445source "fs/gfs2/Kconfig"
446
447config OCFS2_FS
448	tristate "OCFS2 file system support"
449	depends on NET && SYSFS
450	select CONFIGFS_FS
451	select JBD2
452	select CRC32
453	help
454	  OCFS2 is a general purpose extent based shared disk cluster file
455	  system with many similarities to ext3. It supports 64 bit inode
456	  numbers, and has automatically extending metadata groups which may
457	  also make it attractive for non-clustered use.
458
459	  You'll want to install the ocfs2-tools package in order to at least
460	  get "mount.ocfs2".
461
462	  Project web page:    http://oss.oracle.com/projects/ocfs2
463	  Tools web page:      http://oss.oracle.com/projects/ocfs2-tools
464	  OCFS2 mailing lists: http://oss.oracle.com/projects/ocfs2/mailman/
465
466	  For more information on OCFS2, see the file
467	  <file:Documentation/filesystems/ocfs2.txt>.
468
469config OCFS2_FS_O2CB
470	tristate "O2CB Kernelspace Clustering"
471	depends on OCFS2_FS
472	default y
473	help
474	  OCFS2 includes a simple kernelspace clustering package, the OCFS2
475	  Cluster Base.  It only requires a very small userspace component
476	  to configure it. This comes with the standard ocfs2-tools package.
477	  O2CB is limited to maintaining a cluster for OCFS2 file systems.
478	  It cannot manage any other cluster applications.
479
480	  It is always safe to say Y here, as the clustering method is
481	  run-time selectable.
482
483config OCFS2_FS_USERSPACE_CLUSTER
484	tristate "OCFS2 Userspace Clustering"
485	depends on OCFS2_FS && DLM
486	default y
487	help
488	  This option will allow OCFS2 to use userspace clustering services
489	  in conjunction with the DLM in fs/dlm.  If you are using a
490	  userspace cluster manager, say Y here.
491
492	  It is safe to say Y, as the clustering method is run-time
493	  selectable.
494
495config OCFS2_FS_STATS
496	bool "OCFS2 statistics"
497	depends on OCFS2_FS
498	default y
499	help
500	  This option allows some fs statistics to be captured. Enabling
501	  this option may increase the memory consumption.
502
503config OCFS2_DEBUG_MASKLOG
504	bool "OCFS2 logging support"
505	depends on OCFS2_FS
506	default y
507	help
508	  The ocfs2 filesystem has an extensive logging system.  The system
509	  allows selection of events to log via files in /sys/o2cb/logmask/.
510	  This option will enlarge your kernel, but it allows debugging of
511	  ocfs2 filesystem issues.
512
513config OCFS2_DEBUG_FS
514	bool "OCFS2 expensive checks"
515	depends on OCFS2_FS
516	default n
517	help
518	  This option will enable expensive consistency checks. Enable
519	  this option for debugging only as it is likely to decrease
520	  performance of the filesystem.
521
522config OCFS2_COMPAT_JBD
523	bool "Use JBD for compatibility"
524	depends on OCFS2_FS
525	default n
526	select JBD
527	help
528	  The ocfs2 filesystem now uses JBD2 for its journalling.  JBD2
529	  is backwards compatible with JBD.  It is safe to say N here.
530	  However, if you really want to use the original JBD, say Y here.
531
532endif # BLOCK
533
534config DNOTIFY
535	bool "Dnotify support"
536	default y
537	help
538	  Dnotify is a directory-based per-fd file change notification system
539	  that uses signals to communicate events to user-space.  There exist
540	  superior alternatives, but some applications may still rely on
541	  dnotify.
542
543	  If unsure, say Y.
544
545config INOTIFY
546	bool "Inotify file change notification support"
547	default y
548	---help---
549	  Say Y here to enable inotify support.  Inotify is a file change
550	  notification system and a replacement for dnotify.  Inotify fixes
551	  numerous shortcomings in dnotify and introduces several new features
552	  including multiple file events, one-shot support, and unmount
553	  notification.
554
555	  For more information, see <file:Documentation/filesystems/inotify.txt>
556
557	  If unsure, say Y.
558
559config INOTIFY_USER
560	bool "Inotify support for userspace"
561	depends on INOTIFY
562	default y
563	---help---
564	  Say Y here to enable inotify support for userspace, including the
565	  associated system calls.  Inotify allows monitoring of both files and
566	  directories via a single open fd.  Events are read from the file
567	  descriptor, which is also select()- and poll()-able.
568
569	  For more information, see <file:Documentation/filesystems/inotify.txt>
570
571	  If unsure, say Y.
572
573config QUOTA
574	bool "Quota support"
575	help
576	  If you say Y here, you will be able to set per user limits for disk
577	  usage (also called disk quotas). Currently, it works for the
578	  ext2, ext3, and reiserfs file system. ext3 also supports journalled
579	  quotas for which you don't need to run quotacheck(8) after an unclean
580	  shutdown.
581	  For further details, read the Quota mini-HOWTO, available from
582	  <http://www.tldp.org/docs.html#howto>, or the documentation provided
583	  with the quota tools. Probably the quota support is only useful for
584	  multi user systems. If unsure, say N.
585
586config QUOTA_NETLINK_INTERFACE
587	bool "Report quota messages through netlink interface"
588	depends on QUOTA && NET
589	help
590	  If you say Y here, quota warnings (about exceeding softlimit, reaching
591	  hardlimit, etc.) will be reported through netlink interface. If unsure,
592	  say Y.
593
594config PRINT_QUOTA_WARNING
595	bool "Print quota warnings to console (OBSOLETE)"
596	depends on QUOTA
597	default y
598	help
599	  If you say Y here, quota warnings (about exceeding softlimit, reaching
600	  hardlimit, etc.) will be printed to the process' controlling terminal.
601	  Note that this behavior is currently deprecated and may go away in
602	  future. Please use notification via netlink socket instead.
603
604config QFMT_V1
605	tristate "Old quota format support"
606	depends on QUOTA
607	help
608	  This quota format was (is) used by kernels earlier than 2.4.22. If
609	  you have quota working and you don't want to convert to new quota
610	  format say Y here.
611
612config QFMT_V2
613	tristate "Quota format v2 support"
614	depends on QUOTA
615	help
616	  This quota format allows using quotas with 32-bit UIDs/GIDs. If you
617	  need this functionality say Y here.
618
619config QUOTACTL
620	bool
621	depends on XFS_QUOTA || QUOTA
622	default y
623
624config AUTOFS_FS
625	tristate "Kernel automounter support"
626	help
627	  The automounter is a tool to automatically mount remote file systems
628	  on demand. This implementation is partially kernel-based to reduce
629	  overhead in the already-mounted case; this is unlike the BSD
630	  automounter (amd), which is a pure user space daemon.
631
632	  To use the automounter you need the user-space tools from the autofs
633	  package; you can find the location in <file:Documentation/Changes>.
634	  You also want to answer Y to "NFS file system support", below.
635
636	  If you want to use the newer version of the automounter with more
637	  features, say N here and say Y to "Kernel automounter v4 support",
638	  below.
639
640	  To compile this support as a module, choose M here: the module will be
641	  called autofs.
642
643	  If you are not a part of a fairly large, distributed network, you
644	  probably do not need an automounter, and can say N here.
645
646config AUTOFS4_FS
647	tristate "Kernel automounter version 4 support (also supports v3)"
648	help
649	  The automounter is a tool to automatically mount remote file systems
650	  on demand. This implementation is partially kernel-based to reduce
651	  overhead in the already-mounted case; this is unlike the BSD
652	  automounter (amd), which is a pure user space daemon.
653
654	  To use the automounter you need the user-space tools from
655	  <ftp://ftp.kernel.org/pub/linux/daemons/autofs/v4/>; you also
656	  want to answer Y to "NFS file system support", below.
657
658	  To compile this support as a module, choose M here: the module will be
659	  called autofs4.  You will need to add "alias autofs autofs4" to your
660	  modules configuration file.
661
662	  If you are not a part of a fairly large, distributed network or
663	  don't have a laptop which needs to dynamically reconfigure to the
664	  local network, you probably do not need an automounter, and can say
665	  N here.
666
667config FUSE_FS
668	tristate "Filesystem in Userspace support"
669	help
670	  With FUSE it is possible to implement a fully functional filesystem
671	  in a userspace program.
672
673	  There's also companion library: libfuse.  This library along with
674	  utilities is available from the FUSE homepage:
675	  <http://fuse.sourceforge.net/>
676
677	  See <file:Documentation/filesystems/fuse.txt> for more information.
678	  See <file:Documentation/Changes> for needed library/utility version.
679
680	  If you want to develop a userspace FS, or if you want to use
681	  a filesystem based on FUSE, answer Y or M.
682
683config GENERIC_ACL
684	bool
685	select FS_POSIX_ACL
686
687if BLOCK
688menu "CD-ROM/DVD Filesystems"
689
690config ISO9660_FS
691	tristate "ISO 9660 CDROM file system support"
692	help
693	  This is the standard file system used on CD-ROMs.  It was previously
694	  known as "High Sierra File System" and is called "hsfs" on other
695	  Unix systems.  The so-called Rock-Ridge extensions which allow for
696	  long Unix filenames and symbolic links are also supported by this
697	  driver.  If you have a CD-ROM drive and want to do more with it than
698	  just listen to audio CDs and watch its LEDs, say Y (and read
699	  <file:Documentation/filesystems/isofs.txt> and the CD-ROM-HOWTO,
700	  available from <http://www.tldp.org/docs.html#howto>), thereby
701	  enlarging your kernel by about 27 KB; otherwise say N.
702
703	  To compile this file system support as a module, choose M here: the
704	  module will be called isofs.
705
706config JOLIET
707	bool "Microsoft Joliet CDROM extensions"
708	depends on ISO9660_FS
709	select NLS
710	help
711	  Joliet is a Microsoft extension for the ISO 9660 CD-ROM file system
712	  which allows for long filenames in unicode format (unicode is the
713	  new 16 bit character code, successor to ASCII, which encodes the
714	  characters of almost all languages of the world; see
715	  <http://www.unicode.org/> for more information).  Say Y here if you
716	  want to be able to read Joliet CD-ROMs under Linux.
717
718config ZISOFS
719	bool "Transparent decompression extension"
720	depends on ISO9660_FS
721	select ZLIB_INFLATE
722	help
723	  This is a Linux-specific extension to RockRidge which lets you store
724	  data in compressed form on a CD-ROM and have it transparently
725	  decompressed when the CD-ROM is accessed.  See
726	  <http://www.kernel.org/pub/linux/utils/fs/zisofs/> for the tools
727	  necessary to create such a filesystem.  Say Y here if you want to be
728	  able to read such compressed CD-ROMs.
729
730config UDF_FS
731	tristate "UDF file system support"
732	select CRC_ITU_T
733	help
734	  This is the new file system used on some CD-ROMs and DVDs. Say Y if
735	  you intend to mount DVD discs or CDRW's written in packet mode, or
736	  if written to by other UDF utilities, such as DirectCD.
737	  Please read <file:Documentation/filesystems/udf.txt>.
738
739	  To compile this file system support as a module, choose M here: the
740	  module will be called udf.
741
742	  If unsure, say N.
743
744config UDF_NLS
745	bool
746	default y
747	depends on (UDF_FS=m && NLS) || (UDF_FS=y && NLS=y)
748
749endmenu
750endif # BLOCK
751
752if BLOCK
753menu "DOS/FAT/NT Filesystems"
754
755config FAT_FS
756	tristate
757	select NLS
758	help
759	  If you want to use one of the FAT-based file systems (the MS-DOS and
760	  VFAT (Windows 95) file systems), then you must say Y or M here
761	  to include FAT support. You will then be able to mount partitions or
762	  diskettes with FAT-based file systems and transparently access the
763	  files on them, i.e. MSDOS files will look and behave just like all
764	  other Unix files.
765
766	  This FAT support is not a file system in itself, it only provides
767	  the foundation for the other file systems. You will have to say Y or
768	  M to at least one of "MSDOS fs support" or "VFAT fs support" in
769	  order to make use of it.
770
771	  Another way to read and write MSDOS floppies and hard drive
772	  partitions from within Linux (but not transparently) is with the
773	  mtools ("man mtools") program suite. You don't need to say Y here in
774	  order to do that.
775
776	  If you need to move large files on floppies between a DOS and a
777	  Linux box, say Y here, mount the floppy under Linux with an MSDOS
778	  file system and use GNU tar's M option. GNU tar is a program
779	  available for Unix and DOS ("man tar" or "info tar").
780
781	  The FAT support will enlarge your kernel by about 37 KB. If unsure,
782	  say Y.
783
784	  To compile this as a module, choose M here: the module will be called
785	  fat.  Note that if you compile the FAT support as a module, you
786	  cannot compile any of the FAT-based file systems into the kernel
787	  -- they will have to be modules as well.
788
789config MSDOS_FS
790	tristate "MSDOS fs support"
791	select FAT_FS
792	help
793	  This allows you to mount MSDOS partitions of your hard drive (unless
794	  they are compressed; to access compressed MSDOS partitions under
795	  Linux, you can either use the DOS emulator DOSEMU, described in the
796	  DOSEMU-HOWTO, available from
797	  <http://www.tldp.org/docs.html#howto>, or try dmsdosfs in
798	  <ftp://ibiblio.org/pub/Linux/system/filesystems/dosfs/>. If you
799	  intend to use dosemu with a non-compressed MSDOS partition, say Y
800	  here) and MSDOS floppies. This means that file access becomes
801	  transparent, i.e. the MSDOS files look and behave just like all
802	  other Unix files.
803
804	  If you have Windows 95 or Windows NT installed on your MSDOS
805	  partitions, you should use the VFAT file system (say Y to "VFAT fs
806	  support" below), or you will not be able to see the long filenames
807	  generated by Windows 95 / Windows NT.
808
809	  This option will enlarge your kernel by about 7 KB. If unsure,
810	  answer Y. This will only work if you said Y to "DOS FAT fs support"
811	  as well. To compile this as a module, choose M here: the module will
812	  be called msdos.
813
814config VFAT_FS
815	tristate "VFAT (Windows-95) fs support"
816	select FAT_FS
817	help
818	  This option provides support for normal Windows file systems with
819	  long filenames.  That includes non-compressed FAT-based file systems
820	  used by Windows 95, Windows 98, Windows NT 4.0, and the Unix
821	  programs from the mtools package.
822
823	  The VFAT support enlarges your kernel by about 10 KB and it only
824	  works if you said Y to the "DOS FAT fs support" above.  Please read
825	  the file <file:Documentation/filesystems/vfat.txt> for details.  If
826	  unsure, say Y.
827
828	  To compile this as a module, choose M here: the module will be called
829	  vfat.
830
831config FAT_DEFAULT_CODEPAGE
832	int "Default codepage for FAT"
833	depends on MSDOS_FS || VFAT_FS
834	default 437
835	help
836	  This option should be set to the codepage of your FAT filesystems.
837	  It can be overridden with the "codepage" mount option.
838	  See <file:Documentation/filesystems/vfat.txt> for more information.
839
840config FAT_DEFAULT_IOCHARSET
841	string "Default iocharset for FAT"
842	depends on VFAT_FS
843	default "iso8859-1"
844	help
845	  Set this to the default input/output character set you'd
846	  like FAT to use. It should probably match the character set
847	  that most of your FAT filesystems use, and can be overridden
848	  with the "iocharset" mount option for FAT filesystems.
849	  Note that "utf8" is not recommended for FAT filesystems.
850	  If unsure, you shouldn't set "utf8" here.
851	  See <file:Documentation/filesystems/vfat.txt> for more information.
852
853config NTFS_FS
854	tristate "NTFS file system support"
855	select NLS
856	help
857	  NTFS is the file system of Microsoft Windows NT, 2000, XP and 2003.
858
859	  Saying Y or M here enables read support.  There is partial, but
860	  safe, write support available.  For write support you must also
861	  say Y to "NTFS write support" below.
862
863	  There are also a number of user-space tools available, called
864	  ntfsprogs.  These include ntfsundelete and ntfsresize, that work
865	  without NTFS support enabled in the kernel.
866
867	  This is a rewrite from scratch of Linux NTFS support and replaced
868	  the old NTFS code starting with Linux 2.5.11.  A backport to
869	  the Linux 2.4 kernel series is separately available as a patch
870	  from the project web site.
871
872	  For more information see <file:Documentation/filesystems/ntfs.txt>
873	  and <http://www.linux-ntfs.org/>.
874
875	  To compile this file system support as a module, choose M here: the
876	  module will be called ntfs.
877
878	  If you are not using Windows NT, 2000, XP or 2003 in addition to
879	  Linux on your computer it is safe to say N.
880
881config NTFS_DEBUG
882	bool "NTFS debugging support"
883	depends on NTFS_FS
884	help
885	  If you are experiencing any problems with the NTFS file system, say
886	  Y here.  This will result in additional consistency checks to be
887	  performed by the driver as well as additional debugging messages to
888	  be written to the system log.  Note that debugging messages are
889	  disabled by default.  To enable them, supply the option debug_msgs=1
890	  at the kernel command line when booting the kernel or as an option
891	  to insmod when loading the ntfs module.  Once the driver is active,
892	  you can enable debugging messages by doing (as root):
893	  echo 1 > /proc/sys/fs/ntfs-debug
894	  Replacing the "1" with "0" would disable debug messages.
895
896	  If you leave debugging messages disabled, this results in little
897	  overhead, but enabling debug messages results in very significant
898	  slowdown of the system.
899
900	  When reporting bugs, please try to have available a full dump of
901	  debugging messages while the misbehaviour was occurring.
902
903config NTFS_RW
904	bool "NTFS write support"
905	depends on NTFS_FS
906	help
907	  This enables the partial, but safe, write support in the NTFS driver.
908
909	  The only supported operation is overwriting existing files, without
910	  changing the file length.  No file or directory creation, deletion or
911	  renaming is possible.  Note only non-resident files can be written to
912	  so you may find that some very small files (<500 bytes or so) cannot
913	  be written to.
914
915	  While we cannot guarantee that it will not damage any data, we have
916	  so far not received a single report where the driver would have
917	  damaged someones data so we assume it is perfectly safe to use.
918
919	  Note:  While write support is safe in this version (a rewrite from
920	  scratch of the NTFS support), it should be noted that the old NTFS
921	  write support, included in Linux 2.5.10 and before (since 1997),
922	  is not safe.
923
924	  This is currently useful with TopologiLinux.  TopologiLinux is run
925	  on top of any DOS/Microsoft Windows system without partitioning your
926	  hard disk.  Unlike other Linux distributions TopologiLinux does not
927	  need its own partition.  For more information see
928	  <http://topologi-linux.sourceforge.net/>
929
930	  It is perfectly safe to say N here.
931
932endmenu
933endif # BLOCK
934
935menu "Pseudo filesystems"
936
937source "fs/proc/Kconfig"
938
939config SYSFS
940	bool "sysfs file system support" if EMBEDDED
941	default y
942	help
943	The sysfs filesystem is a virtual filesystem that the kernel uses to
944	export internal kernel objects, their attributes, and their
945	relationships to one another.
946
947	Users can use sysfs to ascertain useful information about the running
948	kernel, such as the devices the kernel has discovered on each bus and
949	which driver each is bound to. sysfs can also be used to tune devices
950	and other kernel subsystems.
951
952	Some system agents rely on the information in sysfs to operate.
953	/sbin/hotplug uses device and object attributes in sysfs to assist in
954	delegating policy decisions, like persistently naming devices.
955
956	sysfs is currently used by the block subsystem to mount the root
957	partition.  If sysfs is disabled you must specify the boot device on
958	the kernel boot command line via its major and minor numbers.  For
959	example, "root=03:01" for /dev/hda1.
960
961	Designers of embedded systems may wish to say N here to conserve space.
962
963config TMPFS
964	bool "Virtual memory file system support (former shm fs)"
965	help
966	  Tmpfs is a file system which keeps all files in virtual memory.
967
968	  Everything in tmpfs is temporary in the sense that no files will be
969	  created on your hard drive. The files live in memory and swap
970	  space. If you unmount a tmpfs instance, everything stored therein is
971	  lost.
972
973	  See <file:Documentation/filesystems/tmpfs.txt> for details.
974
975config TMPFS_POSIX_ACL
976	bool "Tmpfs POSIX Access Control Lists"
977	depends on TMPFS
978	select GENERIC_ACL
979	help
980	  POSIX Access Control Lists (ACLs) support permissions for users and
981	  groups beyond the owner/group/world scheme.
982
983	  To learn more about Access Control Lists, visit the POSIX ACLs for
984	  Linux website <http://acl.bestbits.at/>.
985
986	  If you don't know what Access Control Lists are, say N.
987
988config HUGETLBFS
989	bool "HugeTLB file system support"
990	depends on X86 || IA64 || PPC64 || SPARC64 || (SUPERH && MMU) || \
991		   (S390 && 64BIT) || BROKEN
992	help
993	  hugetlbfs is a filesystem backing for HugeTLB pages, based on
994	  ramfs. For architectures that support it, say Y here and read
995	  <file:Documentation/vm/hugetlbpage.txt> for details.
996
997	  If unsure, say N.
998
999config HUGETLB_PAGE
1000	def_bool HUGETLBFS
1001
1002config CONFIGFS_FS
1003	tristate "Userspace-driven configuration filesystem"
1004	depends on SYSFS
1005	help
1006	  configfs is a ram-based filesystem that provides the converse
1007	  of sysfs's functionality. Where sysfs is a filesystem-based
1008	  view of kernel objects, configfs is a filesystem-based manager
1009	  of kernel objects, or config_items.
1010
1011	  Both sysfs and configfs can and should exist together on the
1012	  same system. One is not a replacement for the other.
1013
1014endmenu
1015
1016menu "Miscellaneous filesystems"
1017
1018config ADFS_FS
1019	tristate "ADFS file system support (EXPERIMENTAL)"
1020	depends on BLOCK && EXPERIMENTAL
1021	help
1022	  The Acorn Disc Filing System is the standard file system of the
1023	  RiscOS operating system which runs on Acorn's ARM-based Risc PC
1024	  systems and the Acorn Archimedes range of machines. If you say Y
1025	  here, Linux will be able to read from ADFS partitions on hard drives
1026	  and from ADFS-formatted floppy discs. If you also want to be able to
1027	  write to those devices, say Y to "ADFS write support" below.
1028
1029	  The ADFS partition should be the first partition (i.e.,
1030	  /dev/[hs]d?1) on each of your drives. Please read the file
1031	  <file:Documentation/filesystems/adfs.txt> for further details.
1032
1033	  To compile this code as a module, choose M here: the module will be
1034	  called adfs.
1035
1036	  If unsure, say N.
1037
1038config ADFS_FS_RW
1039	bool "ADFS write support (DANGEROUS)"
1040	depends on ADFS_FS
1041	help
1042	  If you say Y here, you will be able to write to ADFS partitions on
1043	  hard drives and ADFS-formatted floppy disks. This is experimental
1044	  codes, so if you're unsure, say N.
1045
1046config AFFS_FS
1047	tristate "Amiga FFS file system support (EXPERIMENTAL)"
1048	depends on BLOCK && EXPERIMENTAL
1049	help
1050	  The Fast File System (FFS) is the common file system used on hard
1051	  disks by Amiga(tm) systems since AmigaOS Version 1.3 (34.20).  Say Y
1052	  if you want to be able to read and write files from and to an Amiga
1053	  FFS partition on your hard drive.  Amiga floppies however cannot be
1054	  read with this driver due to an incompatibility of the floppy
1055	  controller used in an Amiga and the standard floppy controller in
1056	  PCs and workstations. Read <file:Documentation/filesystems/affs.txt>
1057	  and <file:fs/affs/Changes>.
1058
1059	  With this driver you can also mount disk files used by Bernd
1060	  Schmidt's Un*X Amiga Emulator
1061	  (<http://www.freiburg.linux.de/~uae/>).
1062	  If you want to do this, you will also need to say Y or M to "Loop
1063	  device support", above.
1064
1065	  To compile this file system support as a module, choose M here: the
1066	  module will be called affs.  If unsure, say N.
1067
1068config ECRYPT_FS
1069	tristate "eCrypt filesystem layer support (EXPERIMENTAL)"
1070	depends on EXPERIMENTAL && KEYS && CRYPTO && NET
1071	help
1072	  Encrypted filesystem that operates on the VFS layer.  See
1073	  <file:Documentation/filesystems/ecryptfs.txt> to learn more about
1074	  eCryptfs.  Userspace components are required and can be
1075	  obtained from <http://ecryptfs.sf.net>.
1076
1077	  To compile this file system support as a module, choose M here: the
1078	  module will be called ecryptfs.
1079
1080config HFS_FS
1081	tristate "Apple Macintosh file system support (EXPERIMENTAL)"
1082	depends on BLOCK && EXPERIMENTAL
1083	select NLS
1084	help
1085	  If you say Y here, you will be able to mount Macintosh-formatted
1086	  floppy disks and hard drive partitions with full read-write access.
1087	  Please read <file:Documentation/filesystems/hfs.txt> to learn about
1088	  the available mount options.
1089
1090	  To compile this file system support as a module, choose M here: the
1091	  module will be called hfs.
1092
1093config HFSPLUS_FS
1094	tristate "Apple Extended HFS file system support"
1095	depends on BLOCK
1096	select NLS
1097	select NLS_UTF8
1098	help
1099	  If you say Y here, you will be able to mount extended format
1100	  Macintosh-formatted hard drive partitions with full read-write access.
1101
1102	  This file system is often called HFS+ and was introduced with
1103	  MacOS 8. It includes all Mac specific filesystem data such as
1104	  data forks and creator codes, but it also has several UNIX
1105	  style features such as file ownership and permissions.
1106
1107config BEFS_FS
1108	tristate "BeOS file system (BeFS) support (read only) (EXPERIMENTAL)"
1109	depends on BLOCK && EXPERIMENTAL
1110	select NLS
1111	help
1112	  The BeOS File System (BeFS) is the native file system of Be, Inc's
1113	  BeOS. Notable features include support for arbitrary attributes
1114	  on files and directories, and database-like indices on selected
1115	  attributes. (Also note that this driver doesn't make those features
1116	  available at this time). It is a 64 bit filesystem, so it supports
1117	  extremely large volumes and files.
1118
1119	  If you use this filesystem, you should also say Y to at least one
1120	  of the NLS (native language support) options below.
1121
1122	  If you don't know what this is about, say N.
1123
1124	  To compile this as a module, choose M here: the module will be
1125	  called befs.
1126
1127config BEFS_DEBUG
1128	bool "Debug BeFS"
1129	depends on BEFS_FS
1130	help
1131	  If you say Y here, you can use the 'debug' mount option to enable
1132	  debugging output from the driver.
1133
1134config BFS_FS
1135	tristate "BFS file system support (EXPERIMENTAL)"
1136	depends on BLOCK && EXPERIMENTAL
1137	help
1138	  Boot File System (BFS) is a file system used under SCO UnixWare to
1139	  allow the bootloader access to the kernel image and other important
1140	  files during the boot process.  It is usually mounted under /stand
1141	  and corresponds to the slice marked as "STAND" in the UnixWare
1142	  partition.  You should say Y if you want to read or write the files
1143	  on your /stand slice from within Linux.  You then also need to say Y
1144	  to "UnixWare slices support", below.  More information about the BFS
1145	  file system is contained in the file
1146	  <file:Documentation/filesystems/bfs.txt>.
1147
1148	  If you don't know what this is about, say N.
1149
1150	  To compile this as a module, choose M here: the module will be called
1151	  bfs.  Note that the file system of your root partition (the one
1152	  containing the directory /) cannot be compiled as a module.
1153
1154
1155
1156config EFS_FS
1157	tristate "EFS file system support (read only) (EXPERIMENTAL)"
1158	depends on BLOCK && EXPERIMENTAL
1159	help
1160	  EFS is an older file system used for non-ISO9660 CD-ROMs and hard
1161	  disk partitions by SGI's IRIX operating system (IRIX 6.0 and newer
1162	  uses the XFS file system for hard disk partitions however).
1163
1164	  This implementation only offers read-only access. If you don't know
1165	  what all this is about, it's safe to say N. For more information
1166	  about EFS see its home page at <http://aeschi.ch.eu.org/efs/>.
1167
1168	  To compile the EFS file system support as a module, choose M here: the
1169	  module will be called efs.
1170
1171config JFFS2_FS
1172	tristate "Journalling Flash File System v2 (JFFS2) support"
1173	select CRC32
1174	depends on MTD
1175	help
1176	  JFFS2 is the second generation of the Journalling Flash File System
1177	  for use on diskless embedded devices. It provides improved wear
1178	  levelling, compression and support for hard links. You cannot use
1179	  this on normal block devices, only on 'MTD' devices.
1180
1181	  Further information on the design and implementation of JFFS2 is
1182	  available at <http://sources.redhat.com/jffs2/>.
1183
1184config JFFS2_FS_DEBUG
1185	int "JFFS2 debugging verbosity (0 = quiet, 2 = noisy)"
1186	depends on JFFS2_FS
1187	default "0"
1188	help
1189	  This controls the amount of debugging messages produced by the JFFS2
1190	  code. Set it to zero for use in production systems. For evaluation,
1191	  testing and debugging, it's advisable to set it to one. This will
1192	  enable a few assertions and will print debugging messages at the
1193	  KERN_DEBUG loglevel, where they won't normally be visible. Level 2
1194	  is unlikely to be useful - it enables extra debugging in certain
1195	  areas which at one point needed debugging, but when the bugs were
1196	  located and fixed, the detailed messages were relegated to level 2.
1197
1198	  If reporting bugs, please try to have available a full dump of the
1199	  messages at debug level 1 while the misbehaviour was occurring.
1200
1201config JFFS2_FS_WRITEBUFFER
1202	bool "JFFS2 write-buffering support"
1203	depends on JFFS2_FS
1204	default y
1205	help
1206	  This enables the write-buffering support in JFFS2.
1207
1208	  This functionality is required to support JFFS2 on the following
1209	  types of flash devices:
1210	    - NAND flash
1211	    - NOR flash with transparent ECC
1212	    - DataFlash
1213
1214config JFFS2_FS_WBUF_VERIFY
1215	bool "Verify JFFS2 write-buffer reads"
1216	depends on JFFS2_FS_WRITEBUFFER
1217	default n
1218	help
1219	  This causes JFFS2 to read back every page written through the
1220	  write-buffer, and check for errors.
1221
1222config JFFS2_SUMMARY
1223	bool "JFFS2 summary support (EXPERIMENTAL)"
1224	depends on JFFS2_FS && EXPERIMENTAL
1225	default n
1226	help
1227	  This feature makes it possible to use summary information
1228	  for faster filesystem mount.
1229
1230	  The summary information can be inserted into a filesystem image
1231	  by the utility 'sumtool'.
1232
1233	  If unsure, say 'N'.
1234
1235config JFFS2_FS_XATTR
1236	bool "JFFS2 XATTR support (EXPERIMENTAL)"
1237	depends on JFFS2_FS && EXPERIMENTAL
1238	default n
1239	help
1240	  Extended attributes are name:value pairs associated with inodes by
1241	  the kernel or by users (see the attr(5) manual page, or visit
1242	  <http://acl.bestbits.at/> for details).
1243
1244	  If unsure, say N.
1245
1246config JFFS2_FS_POSIX_ACL
1247	bool "JFFS2 POSIX Access Control Lists"
1248	depends on JFFS2_FS_XATTR
1249	default y
1250	select FS_POSIX_ACL
1251	help
1252	  Posix Access Control Lists (ACLs) support permissions for users and
1253	  groups beyond the owner/group/world scheme.
1254
1255	  To learn more about Access Control Lists, visit the Posix ACLs for
1256	  Linux website <http://acl.bestbits.at/>.
1257
1258	  If you don't know what Access Control Lists are, say N
1259
1260config JFFS2_FS_SECURITY
1261	bool "JFFS2 Security Labels"
1262	depends on JFFS2_FS_XATTR
1263	default y
1264	help
1265	  Security labels support alternative access control models
1266	  implemented by security modules like SELinux.  This option
1267	  enables an extended attribute handler for file security
1268	  labels in the jffs2 filesystem.
1269
1270	  If you are not using a security module that requires using
1271	  extended attributes for file security labels, say N.
1272
1273config JFFS2_COMPRESSION_OPTIONS
1274	bool "Advanced compression options for JFFS2"
1275	depends on JFFS2_FS
1276	default n
1277	help
1278	  Enabling this option allows you to explicitly choose which
1279	  compression modules, if any, are enabled in JFFS2. Removing
1280	  compressors can mean you cannot read existing file systems,
1281	  and enabling experimental compressors can mean that you
1282	  write a file system which cannot be read by a standard kernel.
1283
1284	  If unsure, you should _definitely_ say 'N'.
1285
1286config JFFS2_ZLIB
1287	bool "JFFS2 ZLIB compression support" if JFFS2_COMPRESSION_OPTIONS
1288	select ZLIB_INFLATE
1289	select ZLIB_DEFLATE
1290	depends on JFFS2_FS
1291	default y
1292	help
1293	  Zlib is designed to be a free, general-purpose, legally unencumbered,
1294	  lossless data-compression library for use on virtually any computer
1295	  hardware and operating system. See <http://www.gzip.org/zlib/> for
1296	  further information.
1297
1298	  Say 'Y' if unsure.
1299
1300config JFFS2_LZO
1301	bool "JFFS2 LZO compression support" if JFFS2_COMPRESSION_OPTIONS
1302	select LZO_COMPRESS
1303	select LZO_DECOMPRESS
1304	depends on JFFS2_FS
1305	default n
1306	help
1307	  minilzo-based compression. Generally works better than Zlib.
1308
1309	  This feature was added in July, 2007. Say 'N' if you need
1310	  compatibility with older bootloaders or kernels.
1311
1312config JFFS2_RTIME
1313	bool "JFFS2 RTIME compression support" if JFFS2_COMPRESSION_OPTIONS
1314	depends on JFFS2_FS
1315	default y
1316	help
1317	  Rtime does manage to recompress already-compressed data. Say 'Y' if unsure.
1318
1319config JFFS2_RUBIN
1320	bool "JFFS2 RUBIN compression support" if JFFS2_COMPRESSION_OPTIONS
1321	depends on JFFS2_FS
1322	default n
1323	help
1324	  RUBINMIPS and DYNRUBIN compressors. Say 'N' if unsure.
1325
1326choice
1327	prompt "JFFS2 default compression mode" if JFFS2_COMPRESSION_OPTIONS
1328	default JFFS2_CMODE_PRIORITY
1329	depends on JFFS2_FS
1330	help
1331	  You can set here the default compression mode of JFFS2 from
1332	  the available compression modes. Don't touch if unsure.
1333
1334config JFFS2_CMODE_NONE
1335	bool "no compression"
1336	help
1337	  Uses no compression.
1338
1339config JFFS2_CMODE_PRIORITY
1340	bool "priority"
1341	help
1342	  Tries the compressors in a predefined order and chooses the first
1343	  successful one.
1344
1345config JFFS2_CMODE_SIZE
1346	bool "size (EXPERIMENTAL)"
1347	help
1348	  Tries all compressors and chooses the one which has the smallest
1349	  result.
1350
1351config JFFS2_CMODE_FAVOURLZO
1352	bool "Favour LZO"
1353	help
1354	  Tries all compressors and chooses the one which has the smallest
1355	  result but gives some preference to LZO (which has faster
1356	  decompression) at the expense of size.
1357
1358endchoice
1359
1360# UBIFS File system configuration
1361source "fs/ubifs/Kconfig"
1362
1363config CRAMFS
1364	tristate "Compressed ROM file system support (cramfs)"
1365	depends on BLOCK
1366	select ZLIB_INFLATE
1367	help
1368	  Saying Y here includes support for CramFs (Compressed ROM File
1369	  System).  CramFs is designed to be a simple, small, and compressed
1370	  file system for ROM based embedded systems.  CramFs is read-only,
1371	  limited to 256MB file systems (with 16MB files), and doesn't support
1372	  16/32 bits uid/gid, hard links and timestamps.
1373
1374	  See <file:Documentation/filesystems/cramfs.txt> and
1375	  <file:fs/cramfs/README> for further information.
1376
1377	  To compile this as a module, choose M here: the module will be called
1378	  cramfs.  Note that the root file system (the one containing the
1379	  directory /) cannot be compiled as a module.
1380
1381	  If unsure, say N.
1382
1383config VXFS_FS
1384	tristate "FreeVxFS file system support (VERITAS VxFS(TM) compatible)"
1385	depends on BLOCK
1386	help
1387	  FreeVxFS is a file system driver that support the VERITAS VxFS(TM)
1388	  file system format.  VERITAS VxFS(TM) is the standard file system
1389	  of SCO UnixWare (and possibly others) and optionally available
1390	  for Sunsoft Solaris, HP-UX and many other operating systems.
1391	  Currently only readonly access is supported.
1392
1393	  NOTE: the file system type as used by mount(1), mount(2) and
1394	  fstab(5) is 'vxfs' as it describes the file system format, not
1395	  the actual driver.
1396
1397	  To compile this as a module, choose M here: the module will be
1398	  called freevxfs.  If unsure, say N.
1399
1400config MINIX_FS
1401	tristate "Minix file system support"
1402	depends on BLOCK
1403	help
1404	  Minix is a simple operating system used in many classes about OS's.
1405	  The minix file system (method to organize files on a hard disk
1406	  partition or a floppy disk) was the original file system for Linux,
1407	  but has been superseded by the second extended file system ext2fs.
1408	  You don't want to use the minix file system on your hard disk
1409	  because of certain built-in restrictions, but it is sometimes found
1410	  on older Linux floppy disks.  This option will enlarge your kernel
1411	  by about 28 KB. If unsure, say N.
1412
1413	  To compile this file system support as a module, choose M here: the
1414	  module will be called minix.  Note that the file system of your root
1415	  partition (the one containing the directory /) cannot be compiled as
1416	  a module.
1417
1418config OMFS_FS
1419	tristate "SonicBlue Optimized MPEG File System support"
1420	depends on BLOCK
1421	select CRC_ITU_T
1422	help
1423	  This is the proprietary file system used by the Rio Karma music
1424	  player and ReplayTV DVR.  Despite the name, this filesystem is not
1425	  more efficient than a standard FS for MPEG files, in fact likely
1426	  the opposite is true.  Say Y if you have either of these devices
1427	  and wish to mount its disk.
1428
1429	  To compile this file system support as a module, choose M here: the
1430	  module will be called omfs.  If unsure, say N.
1431
1432config HPFS_FS
1433	tristate "OS/2 HPFS file system support"
1434	depends on BLOCK
1435	help
1436	  OS/2 is IBM's operating system for PC's, the same as Warp, and HPFS
1437	  is the file system used for organizing files on OS/2 hard disk
1438	  partitions. Say Y if you want to be able to read files from and
1439	  write files to an OS/2 HPFS partition on your hard drive. OS/2
1440	  floppies however are in regular MSDOS format, so you don't need this
1441	  option in order to be able to read them. Read
1442	  <file:Documentation/filesystems/hpfs.txt>.
1443
1444	  To compile this file system support as a module, choose M here: the
1445	  module will be called hpfs.  If unsure, say N.
1446
1447
1448config QNX4FS_FS
1449	tristate "QNX4 file system support (read only)"
1450	depends on BLOCK
1451	help
1452	  This is the file system used by the real-time operating systems
1453	  QNX 4 and QNX 6 (the latter is also called QNX RTP).
1454	  Further information is available at <http://www.qnx.com/>.
1455	  Say Y if you intend to mount QNX hard disks or floppies.
1456	  Unless you say Y to "QNX4FS read-write support" below, you will
1457	  only be able to read these file systems.
1458
1459	  To compile this file system support as a module, choose M here: the
1460	  module will be called qnx4.
1461
1462	  If you don't know whether you need it, then you don't need it:
1463	  answer N.
1464
1465config QNX4FS_RW
1466	bool "QNX4FS write support (DANGEROUS)"
1467	depends on QNX4FS_FS && EXPERIMENTAL && BROKEN
1468	help
1469	  Say Y if you want to test write support for QNX4 file systems.
1470
1471	  It's currently broken, so for now:
1472	  answer N.
1473
1474config ROMFS_FS
1475	tristate "ROM file system support"
1476	depends on BLOCK
1477	---help---
1478	  This is a very small read-only file system mainly intended for
1479	  initial ram disks of installation disks, but it could be used for
1480	  other read-only media as well.  Read
1481	  <file:Documentation/filesystems/romfs.txt> for details.
1482
1483	  To compile this file system support as a module, choose M here: the
1484	  module will be called romfs.  Note that the file system of your
1485	  root partition (the one containing the directory /) cannot be a
1486	  module.
1487
1488	  If you don't know whether you need it, then you don't need it:
1489	  answer N.
1490
1491
1492config SYSV_FS
1493	tristate "System V/Xenix/V7/Coherent file system support"
1494	depends on BLOCK
1495	help
1496	  SCO, Xenix and Coherent are commercial Unix systems for Intel
1497	  machines, and Version 7 was used on the DEC PDP-11. Saying Y
1498	  here would allow you to read from their floppies and hard disk
1499	  partitions.
1500
1501	  If you have floppies or hard disk partitions like that, it is likely
1502	  that they contain binaries from those other Unix systems; in order
1503	  to run these binaries, you will want to install linux-abi which is
1504	  a set of kernel modules that lets you run SCO, Xenix, Wyse,
1505	  UnixWare, Dell Unix and System V programs under Linux.  It is
1506	  available via FTP (user: ftp) from
1507	  <ftp://ftp.openlinux.org/pub/people/hch/linux-abi/>).
1508	  NOTE: that will work only for binaries from Intel-based systems;
1509	  PDP ones will have to wait until somebody ports Linux to -11 ;-)
1510
1511	  If you only intend to mount files from some other Unix over the
1512	  network using NFS, you don't need the System V file system support
1513	  (but you need NFS file system support obviously).
1514
1515	  Note that this option is generally not needed for floppies, since a
1516	  good portable way to transport files and directories between unixes
1517	  (and even other operating systems) is given by the tar program ("man
1518	  tar" or preferably "info tar").  Note also that this option has
1519	  nothing whatsoever to do with the option "System V IPC". Read about
1520	  the System V file system in
1521	  <file:Documentation/filesystems/sysv-fs.txt>.
1522	  Saying Y here will enlarge your kernel by about 27 KB.
1523
1524	  To compile this as a module, choose M here: the module will be called
1525	  sysv.
1526
1527	  If you haven't heard about all of this before, it's safe to say N.
1528
1529
1530config UFS_FS
1531	tristate "UFS file system support (read only)"
1532	depends on BLOCK
1533	help
1534	  BSD and derivate versions of Unix (such as SunOS, FreeBSD, NetBSD,
1535	  OpenBSD and NeXTstep) use a file system called UFS. Some System V
1536	  Unixes can create and mount hard disk partitions and diskettes using
1537	  this file system as well. Saying Y here will allow you to read from
1538	  these partitions; if you also want to write to them, say Y to the
1539	  experimental "UFS file system write support", below. Please read the
1540	  file <file:Documentation/filesystems/ufs.txt> for more information.
1541
1542          The recently released UFS2 variant (used in FreeBSD 5.x) is
1543          READ-ONLY supported.
1544
1545	  Note that this option is generally not needed for floppies, since a
1546	  good portable way to transport files and directories between unixes
1547	  (and even other operating systems) is given by the tar program ("man
1548	  tar" or preferably "info tar").
1549
1550	  When accessing NeXTstep files, you may need to convert them from the
1551	  NeXT character set to the Latin1 character set; use the program
1552	  recode ("info recode") for this purpose.
1553
1554	  To compile the UFS file system support as a module, choose M here: the
1555	  module will be called ufs.
1556
1557	  If you haven't heard about all of this before, it's safe to say N.
1558
1559config UFS_FS_WRITE
1560	bool "UFS file system write support (DANGEROUS)"
1561	depends on UFS_FS && EXPERIMENTAL
1562	help
1563	  Say Y here if you want to try writing to UFS partitions. This is
1564	  experimental, so you should back up your UFS partitions beforehand.
1565
1566config UFS_DEBUG
1567	bool "UFS debugging"
1568	depends on UFS_FS
1569	help
1570	  If you are experiencing any problems with the UFS filesystem, say
1571	  Y here.  This will result in _many_ additional debugging messages to be
1572	  written to the system log.
1573
1574endmenu
1575
1576menuconfig NETWORK_FILESYSTEMS
1577	bool "Network File Systems"
1578	default y
1579	depends on NET
1580	---help---
1581	  Say Y here to get to see options for network filesystems and
1582	  filesystem-related networking code, such as NFS daemon and
1583	  RPCSEC security modules.
1584
1585	  This option alone does not add any kernel code.
1586
1587	  If you say N, all options in this submenu will be skipped and
1588	  disabled; if unsure, say Y here.
1589
1590if NETWORK_FILESYSTEMS
1591
1592config NFS_FS
1593	tristate "NFS client support"
1594	depends on INET
1595	select LOCKD
1596	select SUNRPC
1597	select NFS_ACL_SUPPORT if NFS_V3_ACL
1598	help
1599	  Choose Y here if you want to access files residing on other
1600	  computers using Sun's Network File System protocol.  To compile
1601	  this file system support as a module, choose M here: the module
1602	  will be called nfs.
1603
1604	  To mount file systems exported by NFS servers, you also need to
1605	  install the user space mount.nfs command which can be found in
1606	  the Linux nfs-utils package, available from http://linux-nfs.org/.
1607	  Information about using the mount command is available in the
1608	  mount(8) man page.  More detail about the Linux NFS client
1609	  implementation is available via the nfs(5) man page.
1610
1611	  Below you can choose which versions of the NFS protocol are
1612	  available in the kernel to mount NFS servers.  Support for NFS
1613	  version 2 (RFC 1094) is always available when NFS_FS is selected.
1614
1615	  To configure a system which mounts its root file system via NFS
1616	  at boot time, say Y here, select "Kernel level IP
1617	  autoconfiguration" in the NETWORK menu, and select "Root file
1618	  system on NFS" below.  You cannot compile this file system as a
1619	  module in this case.
1620
1621	  If unsure, say N.
1622
1623config NFS_V3
1624	bool "NFS client support for NFS version 3"
1625	depends on NFS_FS
1626	help
1627	  This option enables support for version 3 of the NFS protocol
1628	  (RFC 1813) in the kernel's NFS client.
1629
1630	  If unsure, say Y.
1631
1632config NFS_V3_ACL
1633	bool "NFS client support for the NFSv3 ACL protocol extension"
1634	depends on NFS_V3
1635	help
1636	  Some NFS servers support an auxiliary NFSv3 ACL protocol that
1637	  Sun added to Solaris but never became an official part of the
1638	  NFS version 3 protocol.  This protocol extension allows
1639	  applications on NFS clients to manipulate POSIX Access Control
1640	  Lists on files residing on NFS servers.  NFS servers enforce
1641	  ACLs on local files whether this protocol is available or not.
1642
1643	  Choose Y here if your NFS server supports the Solaris NFSv3 ACL
1644	  protocol extension and you want your NFS client to allow
1645	  applications to access and modify ACLs on files on the server.
1646
1647	  Most NFS servers don't support the Solaris NFSv3 ACL protocol
1648	  extension.  You can choose N here or specify the "noacl" mount
1649	  option to prevent your NFS client from trying to use the NFSv3
1650	  ACL protocol.
1651
1652	  If unsure, say N.
1653
1654config NFS_V4
1655	bool "NFS client support for NFS version 4 (EXPERIMENTAL)"
1656	depends on NFS_FS && EXPERIMENTAL
1657	select RPCSEC_GSS_KRB5
1658	help
1659	  This option enables support for version 4 of the NFS protocol
1660	  (RFC 3530) in the kernel's NFS client.
1661
1662	  To mount NFS servers using NFSv4, you also need to install user
1663	  space programs which can be found in the Linux nfs-utils package,
1664	  available from http://linux-nfs.org/.
1665
1666	  If unsure, say N.
1667
1668config ROOT_NFS
1669	bool "Root file system on NFS"
1670	depends on NFS_FS=y && IP_PNP
1671	help
1672	  If you want your system to mount its root file system via NFS,
1673	  choose Y here.  This is common practice for managing systems
1674	  without local permanent storage.  For details, read
1675	  <file:Documentation/filesystems/nfsroot.txt>.
1676
1677	  Most people say N here.
1678
1679config NFSD
1680	tristate "NFS server support"
1681	depends on INET
1682	select LOCKD
1683	select SUNRPC
1684	select EXPORTFS
1685	select NFS_ACL_SUPPORT if NFSD_V2_ACL
1686	help
1687	  Choose Y here if you want to allow other computers to access
1688	  files residing on this system using Sun's Network File System
1689	  protocol.  To compile the NFS server support as a module,
1690	  choose M here: the module will be called nfsd.
1691
1692	  You may choose to use a user-space NFS server instead, in which
1693	  case you can choose N here.
1694
1695	  To export local file systems using NFS, you also need to install
1696	  user space programs which can be found in the Linux nfs-utils
1697	  package, available from http://linux-nfs.org/.  More detail about
1698	  the Linux NFS server implementation is available via the
1699	  exports(5) man page.
1700
1701	  Below you can choose which versions of the NFS protocol are
1702	  available to clients mounting the NFS server on this system.
1703	  Support for NFS version 2 (RFC 1094) is always available when
1704	  CONFIG_NFSD is selected.
1705
1706	  If unsure, say N.
1707
1708config NFSD_V2_ACL
1709	bool
1710	depends on NFSD
1711
1712config NFSD_V3
1713	bool "NFS server support for NFS version 3"
1714	depends on NFSD
1715	help
1716	  This option enables support in your system's NFS server for
1717	  version 3 of the NFS protocol (RFC 1813).
1718
1719	  If unsure, say Y.
1720
1721config NFSD_V3_ACL
1722	bool "NFS server support for the NFSv3 ACL protocol extension"
1723	depends on NFSD_V3
1724	select NFSD_V2_ACL
1725	help
1726	  Solaris NFS servers support an auxiliary NFSv3 ACL protocol that
1727	  never became an official part of the NFS version 3 protocol.
1728	  This protocol extension allows applications on NFS clients to
1729	  manipulate POSIX Access Control Lists on files residing on NFS
1730	  servers.  NFS servers enforce POSIX ACLs on local files whether
1731	  this protocol is available or not.
1732
1733	  This option enables support in your system's NFS server for the
1734	  NFSv3 ACL protocol extension allowing NFS clients to manipulate
1735	  POSIX ACLs on files exported by your system's NFS server.  NFS
1736	  clients which support the Solaris NFSv3 ACL protocol can then
1737	  access and modify ACLs on your NFS server.
1738
1739	  To store ACLs on your NFS server, you also need to enable ACL-
1740	  related CONFIG options for your local file systems of choice.
1741
1742	  If unsure, say N.
1743
1744config NFSD_V4
1745	bool "NFS server support for NFS version 4 (EXPERIMENTAL)"
1746	depends on NFSD && PROC_FS && EXPERIMENTAL
1747	select NFSD_V3
1748	select FS_POSIX_ACL
1749	select RPCSEC_GSS_KRB5
1750	help
1751	  This option enables support in your system's NFS server for
1752	  version 4 of the NFS protocol (RFC 3530).
1753
1754	  To export files using NFSv4, you need to install additional user
1755	  space programs which can be found in the Linux nfs-utils package,
1756	  available from http://linux-nfs.org/.
1757
1758	  If unsure, say N.
1759
1760config LOCKD
1761	tristate
1762
1763config LOCKD_V4
1764	bool
1765	depends on NFSD_V3 || NFS_V3
1766	default y
1767
1768config EXPORTFS
1769	tristate
1770
1771config NFS_ACL_SUPPORT
1772	tristate
1773	select FS_POSIX_ACL
1774
1775config NFS_COMMON
1776	bool
1777	depends on NFSD || NFS_FS
1778	default y
1779
1780config SUNRPC
1781	tristate
1782
1783config SUNRPC_GSS
1784	tristate
1785
1786config SUNRPC_XPRT_RDMA
1787	tristate
1788	depends on SUNRPC && INFINIBAND && EXPERIMENTAL
1789	default SUNRPC && INFINIBAND
1790	help
1791	  This option enables an RPC client transport capability that
1792	  allows the NFS client to mount servers via an RDMA-enabled
1793	  transport.
1794
1795	  To compile RPC client RDMA transport support as a module,
1796	  choose M here: the module will be called xprtrdma.
1797
1798	  If unsure, say N.
1799
1800config SUNRPC_REGISTER_V4
1801	bool "Register local RPC services via rpcbind v4 (EXPERIMENTAL)"
1802	depends on SUNRPC && EXPERIMENTAL
1803	default n
1804	help
1805	  Sun added support for registering RPC services at an IPv6
1806	  address by creating two new versions of the rpcbind protocol
1807	  (RFC 1833).
1808
1809	  This option enables support in the kernel RPC server for
1810	  registering kernel RPC services via version 4 of the rpcbind
1811	  protocol.  If you enable this option, you must run a portmapper
1812	  daemon that supports rpcbind protocol version 4.
1813
1814	  Serving NFS over IPv6 from knfsd (the kernel's NFS server)
1815	  requires that you enable this option and use a portmapper that
1816	  supports rpcbind version 4.
1817
1818	  If unsure, say N to get traditional behavior (register kernel
1819	  RPC services using only rpcbind version 2).  Distributions
1820	  using the legacy Linux portmapper daemon must say N here.
1821
1822config RPCSEC_GSS_KRB5
1823	tristate "Secure RPC: Kerberos V mechanism (EXPERIMENTAL)"
1824	depends on SUNRPC && EXPERIMENTAL
1825	select SUNRPC_GSS
1826	select CRYPTO
1827	select CRYPTO_MD5
1828	select CRYPTO_DES
1829	select CRYPTO_CBC
1830	help
1831	  Choose Y here to enable Secure RPC using the Kerberos version 5
1832	  GSS-API mechanism (RFC 1964).
1833
1834	  Secure RPC calls with Kerberos require an auxiliary user-space
1835	  daemon which may be found in the Linux nfs-utils package
1836	  available from http://linux-nfs.org/.  In addition, user-space
1837	  Kerberos support should be installed.
1838
1839	  If unsure, say N.
1840
1841config RPCSEC_GSS_SPKM3
1842	tristate "Secure RPC: SPKM3 mechanism (EXPERIMENTAL)"
1843	depends on SUNRPC && EXPERIMENTAL
1844	select SUNRPC_GSS
1845	select CRYPTO
1846	select CRYPTO_MD5
1847	select CRYPTO_DES
1848	select CRYPTO_CAST5
1849	select CRYPTO_CBC
1850	help
1851	  Choose Y here to enable Secure RPC using the SPKM3 public key
1852	  GSS-API mechansim (RFC 2025).
1853
1854	  Secure RPC calls with SPKM3 require an auxiliary userspace
1855	  daemon which may be found in the Linux nfs-utils package
1856	  available from http://linux-nfs.org/.
1857
1858	  If unsure, say N.
1859
1860config SMB_FS
1861	tristate "SMB file system support (OBSOLETE, please use CIFS)"
1862	depends on INET
1863	select NLS
1864	help
1865	  SMB (Server Message Block) is the protocol Windows for Workgroups
1866	  (WfW), Windows 95/98, Windows NT and OS/2 Lan Manager use to share
1867	  files and printers over local networks.  Saying Y here allows you to
1868	  mount their file systems (often called "shares" in this context) and
1869	  access them just like any other Unix directory.  Currently, this
1870	  works only if the Windows machines use TCP/IP as the underlying
1871	  transport protocol, and not NetBEUI.  For details, read
1872	  <file:Documentation/filesystems/smbfs.txt> and the SMB-HOWTO,
1873	  available from <http://www.tldp.org/docs.html#howto>.
1874
1875	  Note: if you just want your box to act as an SMB *server* and make
1876	  files and printing services available to Windows clients (which need
1877	  to have a TCP/IP stack), you don't need to say Y here; you can use
1878	  the program SAMBA (available from <ftp://ftp.samba.org/pub/samba/>)
1879	  for that.
1880
1881	  General information about how to connect Linux, Windows machines and
1882	  Macs is on the WWW at <http://www.eats.com/linux_mac_win.html>.
1883
1884	  To compile the SMB support as a module, choose M here:
1885	  the module will be called smbfs.  Most people say N, however.
1886
1887config SMB_NLS_DEFAULT
1888	bool "Use a default NLS"
1889	depends on SMB_FS
1890	help
1891	  Enabling this will make smbfs use nls translations by default. You
1892	  need to specify the local charset (CONFIG_NLS_DEFAULT) in the nls
1893	  settings and you need to give the default nls for the SMB server as
1894	  CONFIG_SMB_NLS_REMOTE.
1895
1896	  The nls settings can be changed at mount time, if your smbmount
1897	  supports that, using the codepage and iocharset parameters.
1898
1899	  smbmount from samba 2.2.0 or later supports this.
1900
1901config SMB_NLS_REMOTE
1902	string "Default Remote NLS Option"
1903	depends on SMB_NLS_DEFAULT
1904	default "cp437"
1905	help
1906	  This setting allows you to specify a default value for which
1907	  codepage the server uses. If this field is left blank no
1908	  translations will be done by default. The local codepage/charset
1909	  default to CONFIG_NLS_DEFAULT.
1910
1911	  The nls settings can be changed at mount time, if your smbmount
1912	  supports that, using the codepage and iocharset parameters.
1913
1914	  smbmount from samba 2.2.0 or later supports this.
1915
1916config CIFS
1917	tristate "CIFS support (advanced network filesystem, SMBFS successor)"
1918	depends on INET
1919	select NLS
1920	help
1921	  This is the client VFS module for the Common Internet File System
1922	  (CIFS) protocol which is the successor to the Server Message Block
1923	  (SMB) protocol, the native file sharing mechanism for most early
1924	  PC operating systems.  The CIFS protocol is fully supported by
1925	  file servers such as Windows 2000 (including Windows 2003, NT 4
1926	  and Windows XP) as well by Samba (which provides excellent CIFS
1927	  server support for Linux and many other operating systems). Limited
1928	  support for OS/2 and Windows ME and similar servers is provided as
1929	  well.
1930
1931	  The cifs module provides an advanced network file system
1932	  client for mounting to CIFS compliant servers.  It includes
1933	  support for DFS (hierarchical name space), secure per-user
1934	  session establishment via Kerberos or NTLM or NTLMv2,
1935	  safe distributed caching (oplock), optional packet
1936	  signing, Unicode and other internationalization improvements.
1937	  If you need to mount to Samba or Windows from this machine, say Y.
1938
1939config CIFS_STATS
1940        bool "CIFS statistics"
1941        depends on CIFS
1942        help
1943          Enabling this option will cause statistics for each server share
1944	  mounted by the cifs client to be displayed in /proc/fs/cifs/Stats
1945
1946config CIFS_STATS2
1947	bool "Extended statistics"
1948	depends on CIFS_STATS
1949	help
1950	  Enabling this option will allow more detailed statistics on SMB
1951	  request timing to be displayed in /proc/fs/cifs/DebugData and also
1952	  allow optional logging of slow responses to dmesg (depending on the
1953	  value of /proc/fs/cifs/cifsFYI, see fs/cifs/README for more details).
1954	  These additional statistics may have a minor effect on performance
1955	  and memory utilization.
1956
1957	  Unless you are a developer or are doing network performance analysis
1958	  or tuning, say N.
1959
1960config CIFS_WEAK_PW_HASH
1961	bool "Support legacy servers which use weaker LANMAN security"
1962	depends on CIFS
1963	help
1964	  Modern CIFS servers including Samba and most Windows versions
1965	  (since 1997) support stronger NTLM (and even NTLMv2 and Kerberos)
1966	  security mechanisms. These hash the password more securely
1967	  than the mechanisms used in the older LANMAN version of the
1968	  SMB protocol but LANMAN based authentication is needed to
1969	  establish sessions with some old SMB servers.
1970
1971	  Enabling this option allows the cifs module to mount to older
1972	  LANMAN based servers such as OS/2 and Windows 95, but such
1973	  mounts may be less secure than mounts using NTLM or more recent
1974	  security mechanisms if you are on a public network.  Unless you
1975	  have a need to access old SMB servers (and are on a private
1976	  network) you probably want to say N.  Even if this support
1977	  is enabled in the kernel build, LANMAN authentication will not be
1978	  used automatically. At runtime LANMAN mounts are disabled but
1979	  can be set to required (or optional) either in
1980	  /proc/fs/cifs (see fs/cifs/README for more detail) or via an
1981	  option on the mount command. This support is disabled by
1982	  default in order to reduce the possibility of a downgrade
1983	  attack.
1984
1985	  If unsure, say N.
1986
1987config CIFS_UPCALL
1988	  bool "Kerberos/SPNEGO advanced session setup"
1989	  depends on CIFS && KEYS
1990	  help
1991	    Enables an upcall mechanism for CIFS which accesses
1992	    userspace helper utilities to provide SPNEGO packaged (RFC 4178)
1993	    Kerberos tickets which are needed to mount to certain secure servers
1994	    (for which more secure Kerberos authentication is required). If
1995	    unsure, say N.
1996
1997config CIFS_XATTR
1998        bool "CIFS extended attributes"
1999        depends on CIFS
2000        help
2001          Extended attributes are name:value pairs associated with inodes by
2002          the kernel or by users (see the attr(5) manual page, or visit
2003          <http://acl.bestbits.at/> for details).  CIFS maps the name of
2004          extended attributes beginning with the user namespace prefix
2005          to SMB/CIFS EAs. EAs are stored on Windows servers without the
2006          user namespace prefix, but their names are seen by Linux cifs clients
2007          prefaced by the user namespace prefix. The system namespace
2008          (used by some filesystems to store ACLs) is not supported at
2009          this time.
2010
2011          If unsure, say N.
2012
2013config CIFS_POSIX
2014        bool "CIFS POSIX Extensions"
2015        depends on CIFS_XATTR
2016        help
2017          Enabling this option will cause the cifs client to attempt to
2018	  negotiate a newer dialect with servers, such as Samba 3.0.5
2019	  or later, that optionally can handle more POSIX like (rather
2020	  than Windows like) file behavior.  It also enables
2021	  support for POSIX ACLs (getfacl and setfacl) to servers
2022	  (such as Samba 3.10 and later) which can negotiate
2023	  CIFS POSIX ACL support.  If unsure, say N.
2024
2025config CIFS_DEBUG2
2026	bool "Enable additional CIFS debugging routines"
2027	depends on CIFS
2028	help
2029	   Enabling this option adds a few more debugging routines
2030	   to the cifs code which slightly increases the size of
2031	   the cifs module and can cause additional logging of debug
2032	   messages in some error paths, slowing performance. This
2033	   option can be turned off unless you are debugging
2034	   cifs problems.  If unsure, say N.
2035
2036config CIFS_EXPERIMENTAL
2037	  bool "CIFS Experimental Features (EXPERIMENTAL)"
2038	  depends on CIFS && EXPERIMENTAL
2039	  help
2040	    Enables cifs features under testing. These features are
2041	    experimental and currently include DFS support and directory
2042	    change notification ie fcntl(F_DNOTIFY), as well as the upcall
2043	    mechanism which will be used for Kerberos session negotiation
2044	    and uid remapping.  Some of these features also may depend on
2045	    setting a value of 1 to the pseudo-file /proc/fs/cifs/Experimental
2046	    (which is disabled by default). See the file fs/cifs/README
2047	    for more details.  If unsure, say N.
2048
2049config CIFS_DFS_UPCALL
2050	  bool "DFS feature support (EXPERIMENTAL)"
2051	  depends on CIFS_EXPERIMENTAL
2052	  depends on KEYS
2053	  help
2054	    Enables an upcall mechanism for CIFS which contacts userspace
2055	    helper utilities to provide server name resolution (host names to
2056	    IP addresses) which is needed for implicit mounts of DFS junction
2057	    points. If unsure, say N.
2058
2059config NCP_FS
2060	tristate "NCP file system support (to mount NetWare volumes)"
2061	depends on IPX!=n || INET
2062	help
2063	  NCP (NetWare Core Protocol) is a protocol that runs over IPX and is
2064	  used by Novell NetWare clients to talk to file servers.  It is to
2065	  IPX what NFS is to TCP/IP, if that helps.  Saying Y here allows you
2066	  to mount NetWare file server volumes and to access them just like
2067	  any other Unix directory.  For details, please read the file
2068	  <file:Documentation/filesystems/ncpfs.txt> in the kernel source and
2069	  the IPX-HOWTO from <http://www.tldp.org/docs.html#howto>.
2070
2071	  You do not have to say Y here if you want your Linux box to act as a
2072	  file *server* for Novell NetWare clients.
2073
2074	  General information about how to connect Linux, Windows machines and
2075	  Macs is on the WWW at <http://www.eats.com/linux_mac_win.html>.
2076
2077	  To compile this as a module, choose M here: the module will be called
2078	  ncpfs.  Say N unless you are connected to a Novell network.
2079
2080source "fs/ncpfs/Kconfig"
2081
2082config CODA_FS
2083	tristate "Coda file system support (advanced network fs)"
2084	depends on INET
2085	help
2086	  Coda is an advanced network file system, similar to NFS in that it
2087	  enables you to mount file systems of a remote server and access them
2088	  with regular Unix commands as if they were sitting on your hard
2089	  disk.  Coda has several advantages over NFS: support for
2090	  disconnected operation (e.g. for laptops), read/write server
2091	  replication, security model for authentication and encryption,
2092	  persistent client caches and write back caching.
2093
2094	  If you say Y here, your Linux box will be able to act as a Coda
2095	  *client*.  You will need user level code as well, both for the
2096	  client and server.  Servers are currently user level, i.e. they need
2097	  no kernel support.  Please read
2098	  <file:Documentation/filesystems/coda.txt> and check out the Coda
2099	  home page <http://www.coda.cs.cmu.edu/>.
2100
2101	  To compile the coda client support as a module, choose M here: the
2102	  module will be called coda.
2103
2104config AFS_FS
2105	tristate "Andrew File System support (AFS) (EXPERIMENTAL)"
2106	depends on INET && EXPERIMENTAL
2107	select AF_RXRPC
2108	help
2109	  If you say Y here, you will get an experimental Andrew File System
2110	  driver. It currently only supports unsecured read-only AFS access.
2111
2112	  See <file:Documentation/filesystems/afs.txt> for more information.
2113
2114	  If unsure, say N.
2115
2116config AFS_DEBUG
2117	bool "AFS dynamic debugging"
2118	depends on AFS_FS
2119	help
2120	  Say Y here to make runtime controllable debugging messages appear.
2121
2122	  See <file:Documentation/filesystems/afs.txt> for more information.
2123
2124	  If unsure, say N.
2125
2126config 9P_FS
2127	tristate "Plan 9 Resource Sharing Support (9P2000) (Experimental)"
2128	depends on INET && NET_9P && EXPERIMENTAL
2129	help
2130	  If you say Y here, you will get experimental support for
2131	  Plan 9 resource sharing via the 9P2000 protocol.
2132
2133	  See <http://v9fs.sf.net> for more information.
2134
2135	  If unsure, say N.
2136
2137endif # NETWORK_FILESYSTEMS
2138
2139if BLOCK
2140menu "Partition Types"
2141
2142source "fs/partitions/Kconfig"
2143
2144endmenu
2145endif
2146
2147source "fs/nls/Kconfig"
2148source "fs/dlm/Kconfig"
2149
2150endmenu
2151