xref: /linux/fs/Kconfig (revision 7f3edee81fbd49114c28057512906f169caa0bed)
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 EXT4DEV_FS
140	tristate "Ext4dev/ext4 extended fs support development (EXPERIMENTAL)"
141	depends on EXPERIMENTAL
142	select JBD2
143	select CRC16
144	help
145	  Ext4dev is a predecessor filesystem of the next generation
146	  extended fs ext4, based on ext3 filesystem code. It will be
147	  renamed ext4 fs later, once ext4dev is mature and stabilized.
148
149	  Unlike the change from ext2 filesystem to ext3 filesystem,
150	  the on-disk format of ext4dev is not the same as ext3 any more:
151	  it is based on extent maps and it supports 48-bit physical block
152	  numbers. These combined on-disk format changes will allow
153	  ext4dev/ext4 to handle more than 16 TB filesystem volumes --
154	  a hard limit that ext3 cannot overcome without changing the
155	  on-disk format.
156
157	  Other than extent maps and 48-bit block numbers, ext4dev also is
158	  likely to have other new features such as persistent preallocation,
159	  high resolution time stamps, and larger file support etc.  These
160	  features will be added to ext4dev gradually.
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_FS_XATTR
168	bool "Ext4dev extended attributes"
169	depends on EXT4DEV_FS
170	default y
171	help
172	  Extended attributes are name:value pairs associated with inodes by
173	  the kernel or by users (see the attr(5) manual page, or visit
174	  <http://acl.bestbits.at/> for details).
175
176	  If unsure, say N.
177
178	  You need this for POSIX ACL support on ext4dev/ext4.
179
180config EXT4DEV_FS_POSIX_ACL
181	bool "Ext4dev POSIX Access Control Lists"
182	depends on EXT4DEV_FS_XATTR
183	select FS_POSIX_ACL
184	help
185	  POSIX Access Control Lists (ACLs) support permissions for users and
186	  groups beyond the owner/group/world scheme.
187
188	  To learn more about Access Control Lists, visit the POSIX ACLs for
189	  Linux website <http://acl.bestbits.at/>.
190
191	  If you don't know what Access Control Lists are, say N
192
193config EXT4DEV_FS_SECURITY
194	bool "Ext4dev Security Labels"
195	depends on EXT4DEV_FS_XATTR
196	help
197	  Security labels support alternative access control models
198	  implemented by security modules like SELinux.  This option
199	  enables an extended attribute handler for file security
200	  labels in the ext4dev/ext4 filesystem.
201
202	  If you are not using a security module that requires using
203	  extended attributes for file security labels, say N.
204
205config JBD
206	tristate
207	help
208	  This is a generic journalling layer for block devices.  It is
209	  currently used by the ext3 and OCFS2 file systems, but it could
210	  also be used to add journal support to other file systems or block
211	  devices such as RAID or LVM.
212
213	  If you are using the ext3 or OCFS2 file systems, you need to
214	  say Y here. If you are not using ext3 OCFS2 then you will probably
215	  want to say N.
216
217	  To compile this device as a module, choose M here: the module will be
218	  called jbd.  If you are compiling ext3 or OCFS2 into the kernel,
219	  you cannot compile this code as a module.
220
221config JBD_DEBUG
222	bool "JBD (ext3) debugging support"
223	depends on JBD && DEBUG_FS
224	help
225	  If you are using the ext3 journaled file system (or potentially any
226	  other file system/device using JBD), this option allows you to
227	  enable debugging output while the system is running, in order to
228	  help track down any problems you are having.  By default the
229	  debugging output will be turned off.
230
231	  If you select Y here, then you will be able to turn on debugging
232	  with "echo N > /sys/kernel/debug/jbd/jbd-debug", where N is a
233	  number between 1 and 5, the higher the number, the more debugging
234	  output is generated.  To turn debugging off again, do
235	  "echo 0 > /sys/kernel/debug/jbd/jbd-debug".
236
237config JBD2
238	tristate
239	help
240	  This is a generic journaling layer for block devices that support
241	  both 32-bit and 64-bit block numbers.  It is currently used by
242	  the ext4dev/ext4 filesystem, but it could also be used to add
243	  journal support to other file systems or block devices such
244	  as RAID or LVM.
245
246	  If you are using ext4dev/ext4, you need to say Y here. If you are not
247	  using ext4dev/ext4 then you will probably want to say N.
248
249	  To compile this device as a module, choose M here. The module will be
250	  called jbd2.  If you are compiling ext4dev/ext4 into the kernel,
251	  you cannot compile this code as a module.
252
253config JBD2_DEBUG
254	bool "JBD2 (ext4dev/ext4) debugging support"
255	depends on JBD2 && DEBUG_FS
256	help
257	  If you are using the ext4dev/ext4 journaled file system (or
258	  potentially any other filesystem/device using JBD2), this option
259	  allows you to enable debugging output while the system is running,
260	  in order to help track down any problems you are having.
261	  By default, the debugging output will be turned off.
262
263	  If you select Y here, then you will be able to turn on debugging
264	  with "echo N > /sys/kernel/debug/jbd2/jbd2-debug", where N is a
265	  number between 1 and 5. The higher the number, the more debugging
266	  output is generated.  To turn debugging off again, do
267	  "echo 0 > /sys/kernel/debug/jbd2/jbd2-debug".
268
269config FS_MBCACHE
270# Meta block cache for Extended Attributes (ext2/ext3/ext4)
271	tristate
272	depends on EXT2_FS_XATTR || EXT3_FS_XATTR || EXT4DEV_FS_XATTR
273	default y if EXT2_FS=y || EXT3_FS=y || EXT4DEV_FS=y
274	default m if EXT2_FS=m || EXT3_FS=m || EXT4DEV_FS=m
275
276config REISERFS_FS
277	tristate "Reiserfs support"
278	help
279	  Stores not just filenames but the files themselves in a balanced
280	  tree.  Uses journalling.
281
282	  Balanced trees are more efficient than traditional file system
283	  architectural foundations.
284
285	  In general, ReiserFS is as fast as ext2, but is very efficient with
286	  large directories and small files.  Additional patches are needed
287	  for NFS and quotas, please see <http://www.namesys.com/> for links.
288
289	  It is more easily extended to have features currently found in
290	  database and keyword search systems than block allocation based file
291	  systems are.  The next version will be so extended, and will support
292	  plugins consistent with our motto ``It takes more than a license to
293	  make source code open.''
294
295	  Read <http://www.namesys.com/> to learn more about reiserfs.
296
297	  Sponsored by Threshold Networks, Emusic.com, and Bigstorage.com.
298
299	  If you like it, you can pay us to add new features to it that you
300	  need, buy a support contract, or pay us to port it to another OS.
301
302config REISERFS_CHECK
303	bool "Enable reiserfs debug mode"
304	depends on REISERFS_FS
305	help
306	  If you set this to Y, then ReiserFS will perform every check it can
307	  possibly imagine of its internal consistency throughout its
308	  operation.  It will also go substantially slower.  More than once we
309	  have forgotten that this was on, and then gone despondent over the
310	  latest benchmarks.:-) Use of this option allows our team to go all
311	  out in checking for consistency when debugging without fear of its
312	  effect on end users.  If you are on the verge of sending in a bug
313	  report, say Y and you might get a useful error message.  Almost
314	  everyone should say N.
315
316config REISERFS_PROC_INFO
317	bool "Stats in /proc/fs/reiserfs"
318	depends on REISERFS_FS && PROC_FS
319	help
320	  Create under /proc/fs/reiserfs a hierarchy of files, displaying
321	  various ReiserFS statistics and internal data at the expense of
322	  making your kernel or module slightly larger (+8 KB). This also
323	  increases the amount of kernel memory required for each mount.
324	  Almost everyone but ReiserFS developers and people fine-tuning
325	  reiserfs or tracing problems should say N.
326
327config REISERFS_FS_XATTR
328	bool "ReiserFS extended attributes"
329	depends on REISERFS_FS
330	help
331	  Extended attributes are name:value pairs associated with inodes by
332	  the kernel or by users (see the attr(5) manual page, or visit
333	  <http://acl.bestbits.at/> for details).
334
335	  If unsure, say N.
336
337config REISERFS_FS_POSIX_ACL
338	bool "ReiserFS POSIX Access Control Lists"
339	depends on REISERFS_FS_XATTR
340	select FS_POSIX_ACL
341	help
342	  Posix Access Control Lists (ACLs) support permissions for users and
343	  groups beyond the owner/group/world scheme.
344
345	  To learn more about Access Control Lists, visit the Posix ACLs for
346	  Linux website <http://acl.bestbits.at/>.
347
348	  If you don't know what Access Control Lists are, say N
349
350config REISERFS_FS_SECURITY
351	bool "ReiserFS Security Labels"
352	depends on REISERFS_FS_XATTR
353	help
354	  Security labels support alternative access control models
355	  implemented by security modules like SELinux.  This option
356	  enables an extended attribute handler for file security
357	  labels in the ReiserFS filesystem.
358
359	  If you are not using a security module that requires using
360	  extended attributes for file security labels, say N.
361
362config JFS_FS
363	tristate "JFS filesystem support"
364	select NLS
365	help
366	  This is a port of IBM's Journaled Filesystem .  More information is
367	  available in the file <file:Documentation/filesystems/jfs.txt>.
368
369	  If you do not intend to use the JFS filesystem, say N.
370
371config JFS_POSIX_ACL
372	bool "JFS POSIX Access Control Lists"
373	depends on JFS_FS
374	select FS_POSIX_ACL
375	help
376	  Posix Access Control Lists (ACLs) support permissions for users and
377	  groups beyond the owner/group/world scheme.
378
379	  To learn more about Access Control Lists, visit the Posix ACLs for
380	  Linux website <http://acl.bestbits.at/>.
381
382	  If you don't know what Access Control Lists are, say N
383
384config JFS_SECURITY
385	bool "JFS Security Labels"
386	depends on JFS_FS
387	help
388	  Security labels support alternative access control models
389	  implemented by security modules like SELinux.  This option
390	  enables an extended attribute handler for file security
391	  labels in the jfs filesystem.
392
393	  If you are not using a security module that requires using
394	  extended attributes for file security labels, say N.
395
396config JFS_DEBUG
397	bool "JFS debugging"
398	depends on JFS_FS
399	help
400	  If you are experiencing any problems with the JFS filesystem, say
401	  Y here.  This will result in additional debugging messages to be
402	  written to the system log.  Under normal circumstances, this
403	  results in very little overhead.
404
405config JFS_STATISTICS
406	bool "JFS statistics"
407	depends on JFS_FS
408	help
409	  Enabling this option will cause statistics from the JFS file system
410	  to be made available to the user in the /proc/fs/jfs/ directory.
411
412config FS_POSIX_ACL
413# Posix ACL utility routines (for now, only ext2/ext3/jfs/reiserfs)
414#
415# NOTE: you can implement Posix ACLs without these helpers (XFS does).
416# 	Never use this symbol for ifdefs.
417#
418	bool
419	default n
420
421source "fs/xfs/Kconfig"
422source "fs/gfs2/Kconfig"
423
424config OCFS2_FS
425	tristate "OCFS2 file system support"
426	depends on NET && SYSFS
427	select CONFIGFS_FS
428	select JBD
429	select CRC32
430	help
431	  OCFS2 is a general purpose extent based shared disk cluster file
432	  system with many similarities to ext3. It supports 64 bit inode
433	  numbers, and has automatically extending metadata groups which may
434	  also make it attractive for non-clustered use.
435
436	  You'll want to install the ocfs2-tools package in order to at least
437	  get "mount.ocfs2".
438
439	  Project web page:    http://oss.oracle.com/projects/ocfs2
440	  Tools web page:      http://oss.oracle.com/projects/ocfs2-tools
441	  OCFS2 mailing lists: http://oss.oracle.com/projects/ocfs2/mailman/
442
443	  For more information on OCFS2, see the file
444	  <file:Documentation/filesystems/ocfs2.txt>.
445
446config OCFS2_DEBUG_MASKLOG
447	bool "OCFS2 logging support"
448	depends on OCFS2_FS
449	default y
450	help
451	  The ocfs2 filesystem has an extensive logging system.  The system
452	  allows selection of events to log via files in /sys/o2cb/logmask/.
453	  This option will enlarge your kernel, but it allows debugging of
454	  ocfs2 filesystem issues.
455
456config OCFS2_DEBUG_FS
457	bool "OCFS2 expensive checks"
458	depends on OCFS2_FS
459	default n
460	help
461	  This option will enable expensive consistency checks. Enable
462	  this option for debugging only as it is likely to decrease
463	  performance of the filesystem.
464
465config MINIX_FS
466	tristate "Minix fs support"
467	help
468	  Minix is a simple operating system used in many classes about OS's.
469	  The minix file system (method to organize files on a hard disk
470	  partition or a floppy disk) was the original file system for Linux,
471	  but has been superseded by the second extended file system ext2fs.
472	  You don't want to use the minix file system on your hard disk
473	  because of certain built-in restrictions, but it is sometimes found
474	  on older Linux floppy disks.  This option will enlarge your kernel
475	  by about 28 KB. If unsure, say N.
476
477	  To compile this file system support as a module, choose M here: the
478	  module will be called minix.  Note that the file system of your root
479	  partition (the one containing the directory /) cannot be compiled as
480	  a module.
481
482config ROMFS_FS
483	tristate "ROM file system support"
484	---help---
485	  This is a very small read-only file system mainly intended for
486	  initial ram disks of installation disks, but it could be used for
487	  other read-only media as well.  Read
488	  <file:Documentation/filesystems/romfs.txt> for details.
489
490	  To compile this file system support as a module, choose M here: the
491	  module will be called romfs.  Note that the file system of your
492	  root partition (the one containing the directory /) cannot be a
493	  module.
494
495	  If you don't know whether you need it, then you don't need it:
496	  answer N.
497
498endif
499
500config INOTIFY
501	bool "Inotify file change notification support"
502	default y
503	---help---
504	  Say Y here to enable inotify support.  Inotify is a file change
505	  notification system and a replacement for dnotify.  Inotify fixes
506	  numerous shortcomings in dnotify and introduces several new features
507	  including multiple file events, one-shot support, and unmount
508	  notification.
509
510	  For more information, see <file:Documentation/filesystems/inotify.txt>
511
512	  If unsure, say Y.
513
514config INOTIFY_USER
515	bool "Inotify support for userspace"
516	depends on INOTIFY
517	default y
518	---help---
519	  Say Y here to enable inotify support for userspace, including the
520	  associated system calls.  Inotify allows monitoring of both files and
521	  directories via a single open fd.  Events are read from the file
522	  descriptor, which is also select()- and poll()-able.
523
524	  For more information, see <file:Documentation/filesystems/inotify.txt>
525
526	  If unsure, say Y.
527
528config QUOTA
529	bool "Quota support"
530	help
531	  If you say Y here, you will be able to set per user limits for disk
532	  usage (also called disk quotas). Currently, it works for the
533	  ext2, ext3, and reiserfs file system. ext3 also supports journalled
534	  quotas for which you don't need to run quotacheck(8) after an unclean
535	  shutdown.
536	  For further details, read the Quota mini-HOWTO, available from
537	  <http://www.tldp.org/docs.html#howto>, or the documentation provided
538	  with the quota tools. Probably the quota support is only useful for
539	  multi user systems. If unsure, say N.
540
541config QUOTA_NETLINK_INTERFACE
542	bool "Report quota messages through netlink interface"
543	depends on QUOTA && NET
544	help
545	  If you say Y here, quota warnings (about exceeding softlimit, reaching
546	  hardlimit, etc.) will be reported through netlink interface. If unsure,
547	  say Y.
548
549config PRINT_QUOTA_WARNING
550	bool "Print quota warnings to console (OBSOLETE)"
551	depends on QUOTA
552	default y
553	help
554	  If you say Y here, quota warnings (about exceeding softlimit, reaching
555	  hardlimit, etc.) will be printed to the process' controlling terminal.
556	  Note that this behavior is currently deprecated and may go away in
557	  future. Please use notification via netlink socket instead.
558
559config QFMT_V1
560	tristate "Old quota format support"
561	depends on QUOTA
562	help
563	  This quota format was (is) used by kernels earlier than 2.4.22. If
564	  you have quota working and you don't want to convert to new quota
565	  format say Y here.
566
567config QFMT_V2
568	tristate "Quota format v2 support"
569	depends on QUOTA
570	help
571	  This quota format allows using quotas with 32-bit UIDs/GIDs. If you
572	  need this functionality say Y here.
573
574config QUOTACTL
575	bool
576	depends on XFS_QUOTA || QUOTA
577	default y
578
579config DNOTIFY
580	bool "Dnotify support"
581	default y
582	help
583	  Dnotify is a directory-based per-fd file change notification system
584	  that uses signals to communicate events to user-space.  There exist
585	  superior alternatives, but some applications may still rely on
586	  dnotify.
587
588	  If unsure, say Y.
589
590config AUTOFS_FS
591	tristate "Kernel automounter support"
592	help
593	  The automounter is a tool to automatically mount remote file systems
594	  on demand. This implementation is partially kernel-based to reduce
595	  overhead in the already-mounted case; this is unlike the BSD
596	  automounter (amd), which is a pure user space daemon.
597
598	  To use the automounter you need the user-space tools from the autofs
599	  package; you can find the location in <file:Documentation/Changes>.
600	  You also want to answer Y to "NFS file system support", below.
601
602	  If you want to use the newer version of the automounter with more
603	  features, say N here and say Y to "Kernel automounter v4 support",
604	  below.
605
606	  To compile this support as a module, choose M here: the module will be
607	  called autofs.
608
609	  If you are not a part of a fairly large, distributed network, you
610	  probably do not need an automounter, and can say N here.
611
612config AUTOFS4_FS
613	tristate "Kernel automounter version 4 support (also supports v3)"
614	help
615	  The automounter is a tool to automatically mount remote file systems
616	  on demand. This implementation is partially kernel-based to reduce
617	  overhead in the already-mounted case; this is unlike the BSD
618	  automounter (amd), which is a pure user space daemon.
619
620	  To use the automounter you need the user-space tools from
621	  <ftp://ftp.kernel.org/pub/linux/daemons/autofs/v4/>; you also
622	  want to answer Y to "NFS file system support", below.
623
624	  To compile this support as a module, choose M here: the module will be
625	  called autofs4.  You will need to add "alias autofs autofs4" to your
626	  modules configuration file.
627
628	  If you are not a part of a fairly large, distributed network or
629	  don't have a laptop which needs to dynamically reconfigure to the
630	  local network, you probably do not need an automounter, and can say
631	  N here.
632
633config FUSE_FS
634	tristate "Filesystem in Userspace support"
635	help
636	  With FUSE it is possible to implement a fully functional filesystem
637	  in a userspace program.
638
639	  There's also companion library: libfuse.  This library along with
640	  utilities is available from the FUSE homepage:
641	  <http://fuse.sourceforge.net/>
642
643	  See <file:Documentation/filesystems/fuse.txt> for more information.
644	  See <file:Documentation/Changes> for needed library/utility version.
645
646	  If you want to develop a userspace FS, or if you want to use
647	  a filesystem based on FUSE, answer Y or M.
648
649config GENERIC_ACL
650	bool
651	select FS_POSIX_ACL
652
653if BLOCK
654menu "CD-ROM/DVD Filesystems"
655
656config ISO9660_FS
657	tristate "ISO 9660 CDROM file system support"
658	help
659	  This is the standard file system used on CD-ROMs.  It was previously
660	  known as "High Sierra File System" and is called "hsfs" on other
661	  Unix systems.  The so-called Rock-Ridge extensions which allow for
662	  long Unix filenames and symbolic links are also supported by this
663	  driver.  If you have a CD-ROM drive and want to do more with it than
664	  just listen to audio CDs and watch its LEDs, say Y (and read
665	  <file:Documentation/filesystems/isofs.txt> and the CD-ROM-HOWTO,
666	  available from <http://www.tldp.org/docs.html#howto>), thereby
667	  enlarging your kernel by about 27 KB; otherwise say N.
668
669	  To compile this file system support as a module, choose M here: the
670	  module will be called isofs.
671
672config JOLIET
673	bool "Microsoft Joliet CDROM extensions"
674	depends on ISO9660_FS
675	select NLS
676	help
677	  Joliet is a Microsoft extension for the ISO 9660 CD-ROM file system
678	  which allows for long filenames in unicode format (unicode is the
679	  new 16 bit character code, successor to ASCII, which encodes the
680	  characters of almost all languages of the world; see
681	  <http://www.unicode.org/> for more information).  Say Y here if you
682	  want to be able to read Joliet CD-ROMs under Linux.
683
684config ZISOFS
685	bool "Transparent decompression extension"
686	depends on ISO9660_FS
687	select ZLIB_INFLATE
688	help
689	  This is a Linux-specific extension to RockRidge which lets you store
690	  data in compressed form on a CD-ROM and have it transparently
691	  decompressed when the CD-ROM is accessed.  See
692	  <http://www.kernel.org/pub/linux/utils/fs/zisofs/> for the tools
693	  necessary to create such a filesystem.  Say Y here if you want to be
694	  able to read such compressed CD-ROMs.
695
696config UDF_FS
697	tristate "UDF file system support"
698	help
699	  This is the new file system used on some CD-ROMs and DVDs. Say Y if
700	  you intend to mount DVD discs or CDRW's written in packet mode, or
701	  if written to by other UDF utilities, such as DirectCD.
702	  Please read <file:Documentation/filesystems/udf.txt>.
703
704	  To compile this file system support as a module, choose M here: the
705	  module will be called udf.
706
707	  If unsure, say N.
708
709config UDF_NLS
710	bool
711	default y
712	depends on (UDF_FS=m && NLS) || (UDF_FS=y && NLS=y)
713
714endmenu
715endif
716
717if BLOCK
718menu "DOS/FAT/NT Filesystems"
719
720config FAT_FS
721	tristate
722	select NLS
723	help
724	  If you want to use one of the FAT-based file systems (the MS-DOS and
725	  VFAT (Windows 95) file systems), then you must say Y or M here
726	  to include FAT support. You will then be able to mount partitions or
727	  diskettes with FAT-based file systems and transparently access the
728	  files on them, i.e. MSDOS files will look and behave just like all
729	  other Unix files.
730
731	  This FAT support is not a file system in itself, it only provides
732	  the foundation for the other file systems. You will have to say Y or
733	  M to at least one of "MSDOS fs support" or "VFAT fs support" in
734	  order to make use of it.
735
736	  Another way to read and write MSDOS floppies and hard drive
737	  partitions from within Linux (but not transparently) is with the
738	  mtools ("man mtools") program suite. You don't need to say Y here in
739	  order to do that.
740
741	  If you need to move large files on floppies between a DOS and a
742	  Linux box, say Y here, mount the floppy under Linux with an MSDOS
743	  file system and use GNU tar's M option. GNU tar is a program
744	  available for Unix and DOS ("man tar" or "info tar").
745
746	  The FAT support will enlarge your kernel by about 37 KB. If unsure,
747	  say Y.
748
749	  To compile this as a module, choose M here: the module will be called
750	  fat.  Note that if you compile the FAT support as a module, you
751	  cannot compile any of the FAT-based file systems into the kernel
752	  -- they will have to be modules as well.
753
754config MSDOS_FS
755	tristate "MSDOS fs support"
756	select FAT_FS
757	help
758	  This allows you to mount MSDOS partitions of your hard drive (unless
759	  they are compressed; to access compressed MSDOS partitions under
760	  Linux, you can either use the DOS emulator DOSEMU, described in the
761	  DOSEMU-HOWTO, available from
762	  <http://www.tldp.org/docs.html#howto>, or try dmsdosfs in
763	  <ftp://ibiblio.org/pub/Linux/system/filesystems/dosfs/>. If you
764	  intend to use dosemu with a non-compressed MSDOS partition, say Y
765	  here) and MSDOS floppies. This means that file access becomes
766	  transparent, i.e. the MSDOS files look and behave just like all
767	  other Unix files.
768
769	  If you have Windows 95 or Windows NT installed on your MSDOS
770	  partitions, you should use the VFAT file system (say Y to "VFAT fs
771	  support" below), or you will not be able to see the long filenames
772	  generated by Windows 95 / Windows NT.
773
774	  This option will enlarge your kernel by about 7 KB. If unsure,
775	  answer Y. This will only work if you said Y to "DOS FAT fs support"
776	  as well. To compile this as a module, choose M here: the module will
777	  be called msdos.
778
779config VFAT_FS
780	tristate "VFAT (Windows-95) fs support"
781	select FAT_FS
782	help
783	  This option provides support for normal Windows file systems with
784	  long filenames.  That includes non-compressed FAT-based file systems
785	  used by Windows 95, Windows 98, Windows NT 4.0, and the Unix
786	  programs from the mtools package.
787
788	  The VFAT support enlarges your kernel by about 10 KB and it only
789	  works if you said Y to the "DOS FAT fs support" above.  Please read
790	  the file <file:Documentation/filesystems/vfat.txt> for details.  If
791	  unsure, say Y.
792
793	  To compile this as a module, choose M here: the module will be called
794	  vfat.
795
796config FAT_DEFAULT_CODEPAGE
797	int "Default codepage for FAT"
798	depends on MSDOS_FS || VFAT_FS
799	default 437
800	help
801	  This option should be set to the codepage of your FAT filesystems.
802	  It can be overridden with the "codepage" mount option.
803	  See <file:Documentation/filesystems/vfat.txt> for more information.
804
805config FAT_DEFAULT_IOCHARSET
806	string "Default iocharset for FAT"
807	depends on VFAT_FS
808	default "iso8859-1"
809	help
810	  Set this to the default input/output character set you'd
811	  like FAT to use. It should probably match the character set
812	  that most of your FAT filesystems use, and can be overridden
813	  with the "iocharset" mount option for FAT filesystems.
814	  Note that "utf8" is not recommended for FAT filesystems.
815	  If unsure, you shouldn't set "utf8" here.
816	  See <file:Documentation/filesystems/vfat.txt> for more information.
817
818config NTFS_FS
819	tristate "NTFS file system support"
820	select NLS
821	help
822	  NTFS is the file system of Microsoft Windows NT, 2000, XP and 2003.
823
824	  Saying Y or M here enables read support.  There is partial, but
825	  safe, write support available.  For write support you must also
826	  say Y to "NTFS write support" below.
827
828	  There are also a number of user-space tools available, called
829	  ntfsprogs.  These include ntfsundelete and ntfsresize, that work
830	  without NTFS support enabled in the kernel.
831
832	  This is a rewrite from scratch of Linux NTFS support and replaced
833	  the old NTFS code starting with Linux 2.5.11.  A backport to
834	  the Linux 2.4 kernel series is separately available as a patch
835	  from the project web site.
836
837	  For more information see <file:Documentation/filesystems/ntfs.txt>
838	  and <http://linux-ntfs.sourceforge.net/>.
839
840	  To compile this file system support as a module, choose M here: the
841	  module will be called ntfs.
842
843	  If you are not using Windows NT, 2000, XP or 2003 in addition to
844	  Linux on your computer it is safe to say N.
845
846config NTFS_DEBUG
847	bool "NTFS debugging support"
848	depends on NTFS_FS
849	help
850	  If you are experiencing any problems with the NTFS file system, say
851	  Y here.  This will result in additional consistency checks to be
852	  performed by the driver as well as additional debugging messages to
853	  be written to the system log.  Note that debugging messages are
854	  disabled by default.  To enable them, supply the option debug_msgs=1
855	  at the kernel command line when booting the kernel or as an option
856	  to insmod when loading the ntfs module.  Once the driver is active,
857	  you can enable debugging messages by doing (as root):
858	  echo 1 > /proc/sys/fs/ntfs-debug
859	  Replacing the "1" with "0" would disable debug messages.
860
861	  If you leave debugging messages disabled, this results in little
862	  overhead, but enabling debug messages results in very significant
863	  slowdown of the system.
864
865	  When reporting bugs, please try to have available a full dump of
866	  debugging messages while the misbehaviour was occurring.
867
868config NTFS_RW
869	bool "NTFS write support"
870	depends on NTFS_FS
871	help
872	  This enables the partial, but safe, write support in the NTFS driver.
873
874	  The only supported operation is overwriting existing files, without
875	  changing the file length.  No file or directory creation, deletion or
876	  renaming is possible.  Note only non-resident files can be written to
877	  so you may find that some very small files (<500 bytes or so) cannot
878	  be written to.
879
880	  While we cannot guarantee that it will not damage any data, we have
881	  so far not received a single report where the driver would have
882	  damaged someones data so we assume it is perfectly safe to use.
883
884	  Note:  While write support is safe in this version (a rewrite from
885	  scratch of the NTFS support), it should be noted that the old NTFS
886	  write support, included in Linux 2.5.10 and before (since 1997),
887	  is not safe.
888
889	  This is currently useful with TopologiLinux.  TopologiLinux is run
890	  on top of any DOS/Microsoft Windows system without partitioning your
891	  hard disk.  Unlike other Linux distributions TopologiLinux does not
892	  need its own partition.  For more information see
893	  <http://topologi-linux.sourceforge.net/>
894
895	  It is perfectly safe to say N here.
896
897endmenu
898endif
899
900menu "Pseudo filesystems"
901
902config PROC_FS
903	bool "/proc file system support" if EMBEDDED
904	default y
905	help
906	  This is a virtual file system providing information about the status
907	  of the system. "Virtual" means that it doesn't take up any space on
908	  your hard disk: the files are created on the fly by the kernel when
909	  you try to access them. Also, you cannot read the files with older
910	  version of the program less: you need to use more or cat.
911
912	  It's totally cool; for example, "cat /proc/interrupts" gives
913	  information about what the different IRQs are used for at the moment
914	  (there is a small number of Interrupt ReQuest lines in your computer
915	  that are used by the attached devices to gain the CPU's attention --
916	  often a source of trouble if two devices are mistakenly configured
917	  to use the same IRQ). The program procinfo to display some
918	  information about your system gathered from the /proc file system.
919
920	  Before you can use the /proc file system, it has to be mounted,
921	  meaning it has to be given a location in the directory hierarchy.
922	  That location should be /proc. A command such as "mount -t proc proc
923	  /proc" or the equivalent line in /etc/fstab does the job.
924
925	  The /proc file system is explained in the file
926	  <file:Documentation/filesystems/proc.txt> and on the proc(5) manpage
927	  ("man 5 proc").
928
929	  This option will enlarge your kernel by about 67 KB. Several
930	  programs depend on this, so everyone should say Y here.
931
932config PROC_KCORE
933	bool "/proc/kcore support" if !ARM
934	depends on PROC_FS && MMU
935
936config PROC_VMCORE
937        bool "/proc/vmcore support (EXPERIMENTAL)"
938        depends on PROC_FS && EXPERIMENTAL && CRASH_DUMP
939	default y
940        help
941        Exports the dump image of crashed kernel in ELF format.
942
943config PROC_SYSCTL
944	bool "Sysctl support (/proc/sys)" if EMBEDDED
945	depends on PROC_FS
946	select SYSCTL
947	default y
948	---help---
949	  The sysctl interface provides a means of dynamically changing
950	  certain kernel parameters and variables on the fly without requiring
951	  a recompile of the kernel or reboot of the system.  The primary
952	  interface is through /proc/sys.  If you say Y here a tree of
953	  modifiable sysctl entries will be generated beneath the
954          /proc/sys directory. They are explained in the files
955	  in <file:Documentation/sysctl/>.  Note that enabling this
956	  option will enlarge the kernel by at least 8 KB.
957
958	  As it is generally a good thing, you should say Y here unless
959	  building a kernel for install/rescue disks or your system is very
960	  limited in memory.
961
962config SYSFS
963	bool "sysfs file system support" if EMBEDDED
964	default y
965	help
966	The sysfs filesystem is a virtual filesystem that the kernel uses to
967	export internal kernel objects, their attributes, and their
968	relationships to one another.
969
970	Users can use sysfs to ascertain useful information about the running
971	kernel, such as the devices the kernel has discovered on each bus and
972	which driver each is bound to. sysfs can also be used to tune devices
973	and other kernel subsystems.
974
975	Some system agents rely on the information in sysfs to operate.
976	/sbin/hotplug uses device and object attributes in sysfs to assist in
977	delegating policy decisions, like persistently naming devices.
978
979	sysfs is currently used by the block subsystem to mount the root
980	partition.  If sysfs is disabled you must specify the boot device on
981	the kernel boot command line via its major and minor numbers.  For
982	example, "root=03:01" for /dev/hda1.
983
984	Designers of embedded systems may wish to say N here to conserve space.
985
986config TMPFS
987	bool "Virtual memory file system support (former shm fs)"
988	help
989	  Tmpfs is a file system which keeps all files in virtual memory.
990
991	  Everything in tmpfs is temporary in the sense that no files will be
992	  created on your hard drive. The files live in memory and swap
993	  space. If you unmount a tmpfs instance, everything stored therein is
994	  lost.
995
996	  See <file:Documentation/filesystems/tmpfs.txt> for details.
997
998config TMPFS_POSIX_ACL
999	bool "Tmpfs POSIX Access Control Lists"
1000	depends on TMPFS
1001	select GENERIC_ACL
1002	help
1003	  POSIX Access Control Lists (ACLs) support permissions for users and
1004	  groups beyond the owner/group/world scheme.
1005
1006	  To learn more about Access Control Lists, visit the POSIX ACLs for
1007	  Linux website <http://acl.bestbits.at/>.
1008
1009	  If you don't know what Access Control Lists are, say N.
1010
1011config HUGETLBFS
1012	bool "HugeTLB file system support"
1013	depends on X86 || IA64 || PPC64 || SPARC64 || (SUPERH && MMU) || BROKEN
1014	help
1015	  hugetlbfs is a filesystem backing for HugeTLB pages, based on
1016	  ramfs. For architectures that support it, say Y here and read
1017	  <file:Documentation/vm/hugetlbpage.txt> for details.
1018
1019	  If unsure, say N.
1020
1021config HUGETLB_PAGE
1022	def_bool HUGETLBFS
1023
1024config CONFIGFS_FS
1025	tristate "Userspace-driven configuration filesystem"
1026	depends on SYSFS
1027	help
1028	  configfs is a ram-based filesystem that provides the converse
1029	  of sysfs's functionality. Where sysfs is a filesystem-based
1030	  view of kernel objects, configfs is a filesystem-based manager
1031	  of kernel objects, or config_items.
1032
1033	  Both sysfs and configfs can and should exist together on the
1034	  same system. One is not a replacement for the other.
1035
1036endmenu
1037
1038menu "Miscellaneous filesystems"
1039
1040config ADFS_FS
1041	tristate "ADFS file system support (EXPERIMENTAL)"
1042	depends on BLOCK && EXPERIMENTAL
1043	help
1044	  The Acorn Disc Filing System is the standard file system of the
1045	  RiscOS operating system which runs on Acorn's ARM-based Risc PC
1046	  systems and the Acorn Archimedes range of machines. If you say Y
1047	  here, Linux will be able to read from ADFS partitions on hard drives
1048	  and from ADFS-formatted floppy discs. If you also want to be able to
1049	  write to those devices, say Y to "ADFS write support" below.
1050
1051	  The ADFS partition should be the first partition (i.e.,
1052	  /dev/[hs]d?1) on each of your drives. Please read the file
1053	  <file:Documentation/filesystems/adfs.txt> for further details.
1054
1055	  To compile this code as a module, choose M here: the module will be
1056	  called adfs.
1057
1058	  If unsure, say N.
1059
1060config ADFS_FS_RW
1061	bool "ADFS write support (DANGEROUS)"
1062	depends on ADFS_FS
1063	help
1064	  If you say Y here, you will be able to write to ADFS partitions on
1065	  hard drives and ADFS-formatted floppy disks. This is experimental
1066	  codes, so if you're unsure, say N.
1067
1068config AFFS_FS
1069	tristate "Amiga FFS file system support (EXPERIMENTAL)"
1070	depends on BLOCK && EXPERIMENTAL
1071	help
1072	  The Fast File System (FFS) is the common file system used on hard
1073	  disks by Amiga(tm) systems since AmigaOS Version 1.3 (34.20).  Say Y
1074	  if you want to be able to read and write files from and to an Amiga
1075	  FFS partition on your hard drive.  Amiga floppies however cannot be
1076	  read with this driver due to an incompatibility of the floppy
1077	  controller used in an Amiga and the standard floppy controller in
1078	  PCs and workstations. Read <file:Documentation/filesystems/affs.txt>
1079	  and <file:fs/affs/Changes>.
1080
1081	  With this driver you can also mount disk files used by Bernd
1082	  Schmidt's Un*X Amiga Emulator
1083	  (<http://www.freiburg.linux.de/~uae/>).
1084	  If you want to do this, you will also need to say Y or M to "Loop
1085	  device support", above.
1086
1087	  To compile this file system support as a module, choose M here: the
1088	  module will be called affs.  If unsure, say N.
1089
1090config ECRYPT_FS
1091	tristate "eCrypt filesystem layer support (EXPERIMENTAL)"
1092	depends on EXPERIMENTAL && KEYS && CRYPTO && NET
1093	help
1094	  Encrypted filesystem that operates on the VFS layer.  See
1095	  <file:Documentation/filesystems/ecryptfs.txt> to learn more about
1096	  eCryptfs.  Userspace components are required and can be
1097	  obtained from <http://ecryptfs.sf.net>.
1098
1099	  To compile this file system support as a module, choose M here: the
1100	  module will be called ecryptfs.
1101
1102config HFS_FS
1103	tristate "Apple Macintosh file system support (EXPERIMENTAL)"
1104	depends on BLOCK && EXPERIMENTAL
1105	select NLS
1106	help
1107	  If you say Y here, you will be able to mount Macintosh-formatted
1108	  floppy disks and hard drive partitions with full read-write access.
1109	  Please read <file:Documentation/filesystems/hfs.txt> to learn about
1110	  the available mount options.
1111
1112	  To compile this file system support as a module, choose M here: the
1113	  module will be called hfs.
1114
1115config HFSPLUS_FS
1116	tristate "Apple Extended HFS file system support"
1117	depends on BLOCK
1118	select NLS
1119	select NLS_UTF8
1120	help
1121	  If you say Y here, you will be able to mount extended format
1122	  Macintosh-formatted hard drive partitions with full read-write access.
1123
1124	  This file system is often called HFS+ and was introduced with
1125	  MacOS 8. It includes all Mac specific filesystem data such as
1126	  data forks and creator codes, but it also has several UNIX
1127	  style features such as file ownership and permissions.
1128
1129config BEFS_FS
1130	tristate "BeOS file system (BeFS) support (read only) (EXPERIMENTAL)"
1131	depends on BLOCK && EXPERIMENTAL
1132	select NLS
1133	help
1134	  The BeOS File System (BeFS) is the native file system of Be, Inc's
1135	  BeOS. Notable features include support for arbitrary attributes
1136	  on files and directories, and database-like indices on selected
1137	  attributes. (Also note that this driver doesn't make those features
1138	  available at this time). It is a 64 bit filesystem, so it supports
1139	  extremely large volumes and files.
1140
1141	  If you use this filesystem, you should also say Y to at least one
1142	  of the NLS (native language support) options below.
1143
1144	  If you don't know what this is about, say N.
1145
1146	  To compile this as a module, choose M here: the module will be
1147	  called befs.
1148
1149config BEFS_DEBUG
1150	bool "Debug BeFS"
1151	depends on BEFS_FS
1152	help
1153	  If you say Y here, you can use the 'debug' mount option to enable
1154	  debugging output from the driver.
1155
1156config BFS_FS
1157	tristate "BFS file system support (EXPERIMENTAL)"
1158	depends on BLOCK && EXPERIMENTAL
1159	help
1160	  Boot File System (BFS) is a file system used under SCO UnixWare to
1161	  allow the bootloader access to the kernel image and other important
1162	  files during the boot process.  It is usually mounted under /stand
1163	  and corresponds to the slice marked as "STAND" in the UnixWare
1164	  partition.  You should say Y if you want to read or write the files
1165	  on your /stand slice from within Linux.  You then also need to say Y
1166	  to "UnixWare slices support", below.  More information about the BFS
1167	  file system is contained in the file
1168	  <file:Documentation/filesystems/bfs.txt>.
1169
1170	  If you don't know what this is about, say N.
1171
1172	  To compile this as a module, choose M here: the module will be called
1173	  bfs.  Note that the file system of your root partition (the one
1174	  containing the directory /) cannot be compiled as a module.
1175
1176
1177
1178config EFS_FS
1179	tristate "EFS file system support (read only) (EXPERIMENTAL)"
1180	depends on BLOCK && EXPERIMENTAL
1181	help
1182	  EFS is an older file system used for non-ISO9660 CD-ROMs and hard
1183	  disk partitions by SGI's IRIX operating system (IRIX 6.0 and newer
1184	  uses the XFS file system for hard disk partitions however).
1185
1186	  This implementation only offers read-only access. If you don't know
1187	  what all this is about, it's safe to say N. For more information
1188	  about EFS see its home page at <http://aeschi.ch.eu.org/efs/>.
1189
1190	  To compile the EFS file system support as a module, choose M here: the
1191	  module will be called efs.
1192
1193config JFFS2_FS
1194	tristate "Journalling Flash File System v2 (JFFS2) support"
1195	select CRC32
1196	depends on MTD
1197	help
1198	  JFFS2 is the second generation of the Journalling Flash File System
1199	  for use on diskless embedded devices. It provides improved wear
1200	  levelling, compression and support for hard links. You cannot use
1201	  this on normal block devices, only on 'MTD' devices.
1202
1203	  Further information on the design and implementation of JFFS2 is
1204	  available at <http://sources.redhat.com/jffs2/>.
1205
1206config JFFS2_FS_DEBUG
1207	int "JFFS2 debugging verbosity (0 = quiet, 2 = noisy)"
1208	depends on JFFS2_FS
1209	default "0"
1210	help
1211	  This controls the amount of debugging messages produced by the JFFS2
1212	  code. Set it to zero for use in production systems. For evaluation,
1213	  testing and debugging, it's advisable to set it to one. This will
1214	  enable a few assertions and will print debugging messages at the
1215	  KERN_DEBUG loglevel, where they won't normally be visible. Level 2
1216	  is unlikely to be useful - it enables extra debugging in certain
1217	  areas which at one point needed debugging, but when the bugs were
1218	  located and fixed, the detailed messages were relegated to level 2.
1219
1220	  If reporting bugs, please try to have available a full dump of the
1221	  messages at debug level 1 while the misbehaviour was occurring.
1222
1223config JFFS2_FS_WRITEBUFFER
1224	bool "JFFS2 write-buffering support"
1225	depends on JFFS2_FS
1226	default y
1227	help
1228	  This enables the write-buffering support in JFFS2.
1229
1230	  This functionality is required to support JFFS2 on the following
1231	  types of flash devices:
1232	    - NAND flash
1233	    - NOR flash with transparent ECC
1234	    - DataFlash
1235
1236config JFFS2_FS_WBUF_VERIFY
1237	bool "Verify JFFS2 write-buffer reads"
1238	depends on JFFS2_FS_WRITEBUFFER
1239	default n
1240	help
1241	  This causes JFFS2 to read back every page written through the
1242	  write-buffer, and check for errors.
1243
1244config JFFS2_SUMMARY
1245	bool "JFFS2 summary support (EXPERIMENTAL)"
1246	depends on JFFS2_FS && EXPERIMENTAL
1247	default n
1248	help
1249	  This feature makes it possible to use summary information
1250	  for faster filesystem mount.
1251
1252	  The summary information can be inserted into a filesystem image
1253	  by the utility 'sumtool'.
1254
1255	  If unsure, say 'N'.
1256
1257config JFFS2_FS_XATTR
1258	bool "JFFS2 XATTR support (EXPERIMENTAL)"
1259	depends on JFFS2_FS && EXPERIMENTAL
1260	default n
1261	help
1262	  Extended attributes are name:value pairs associated with inodes by
1263	  the kernel or by users (see the attr(5) manual page, or visit
1264	  <http://acl.bestbits.at/> for details).
1265
1266	  If unsure, say N.
1267
1268config JFFS2_FS_POSIX_ACL
1269	bool "JFFS2 POSIX Access Control Lists"
1270	depends on JFFS2_FS_XATTR
1271	default y
1272	select FS_POSIX_ACL
1273	help
1274	  Posix Access Control Lists (ACLs) support permissions for users and
1275	  groups beyond the owner/group/world scheme.
1276
1277	  To learn more about Access Control Lists, visit the Posix ACLs for
1278	  Linux website <http://acl.bestbits.at/>.
1279
1280	  If you don't know what Access Control Lists are, say N
1281
1282config JFFS2_FS_SECURITY
1283	bool "JFFS2 Security Labels"
1284	depends on JFFS2_FS_XATTR
1285	default y
1286	help
1287	  Security labels support alternative access control models
1288	  implemented by security modules like SELinux.  This option
1289	  enables an extended attribute handler for file security
1290	  labels in the jffs2 filesystem.
1291
1292	  If you are not using a security module that requires using
1293	  extended attributes for file security labels, say N.
1294
1295config JFFS2_COMPRESSION_OPTIONS
1296	bool "Advanced compression options for JFFS2"
1297	depends on JFFS2_FS
1298	default n
1299	help
1300	  Enabling this option allows you to explicitly choose which
1301	  compression modules, if any, are enabled in JFFS2. Removing
1302	  compressors can mean you cannot read existing file systems,
1303	  and enabling experimental compressors can mean that you
1304	  write a file system which cannot be read by a standard kernel.
1305
1306	  If unsure, you should _definitely_ say 'N'.
1307
1308config JFFS2_ZLIB
1309	bool "JFFS2 ZLIB compression support" if JFFS2_COMPRESSION_OPTIONS
1310	select ZLIB_INFLATE
1311	select ZLIB_DEFLATE
1312	depends on JFFS2_FS
1313	default y
1314	help
1315	  Zlib is designed to be a free, general-purpose, legally unencumbered,
1316	  lossless data-compression library for use on virtually any computer
1317	  hardware and operating system. See <http://www.gzip.org/zlib/> for
1318	  further information.
1319
1320	  Say 'Y' if unsure.
1321
1322config JFFS2_LZO
1323	bool "JFFS2 LZO compression support" if JFFS2_COMPRESSION_OPTIONS
1324	select LZO_COMPRESS
1325	select LZO_DECOMPRESS
1326	depends on JFFS2_FS
1327	default n
1328	help
1329	  minilzo-based compression. Generally works better than Zlib.
1330
1331	  This feature was added in July, 2007. Say 'N' if you need
1332	  compatibility with older bootloaders or kernels.
1333
1334config JFFS2_RTIME
1335	bool "JFFS2 RTIME compression support" if JFFS2_COMPRESSION_OPTIONS
1336	depends on JFFS2_FS
1337	default y
1338	help
1339	  Rtime does manage to recompress already-compressed data. Say 'Y' if unsure.
1340
1341config JFFS2_RUBIN
1342	bool "JFFS2 RUBIN compression support" if JFFS2_COMPRESSION_OPTIONS
1343	depends on JFFS2_FS
1344	default n
1345	help
1346	  RUBINMIPS and DYNRUBIN compressors. Say 'N' if unsure.
1347
1348choice
1349	prompt "JFFS2 default compression mode" if JFFS2_COMPRESSION_OPTIONS
1350	default JFFS2_CMODE_PRIORITY
1351	depends on JFFS2_FS
1352	help
1353	  You can set here the default compression mode of JFFS2 from
1354	  the available compression modes. Don't touch if unsure.
1355
1356config JFFS2_CMODE_NONE
1357	bool "no compression"
1358	help
1359	  Uses no compression.
1360
1361config JFFS2_CMODE_PRIORITY
1362	bool "priority"
1363	help
1364	  Tries the compressors in a predefined order and chooses the first
1365	  successful one.
1366
1367config JFFS2_CMODE_SIZE
1368	bool "size (EXPERIMENTAL)"
1369	help
1370	  Tries all compressors and chooses the one which has the smallest
1371	  result.
1372
1373config JFFS2_CMODE_FAVOURLZO
1374	bool "Favour LZO"
1375	help
1376	  Tries all compressors and chooses the one which has the smallest
1377	  result but gives some preference to LZO (which has faster
1378	  decompression) at the expense of size.
1379
1380endchoice
1381
1382config CRAMFS
1383	tristate "Compressed ROM file system support (cramfs)"
1384	depends on BLOCK
1385	select ZLIB_INFLATE
1386	help
1387	  Saying Y here includes support for CramFs (Compressed ROM File
1388	  System).  CramFs is designed to be a simple, small, and compressed
1389	  file system for ROM based embedded systems.  CramFs is read-only,
1390	  limited to 256MB file systems (with 16MB files), and doesn't support
1391	  16/32 bits uid/gid, hard links and timestamps.
1392
1393	  See <file:Documentation/filesystems/cramfs.txt> and
1394	  <file:fs/cramfs/README> for further information.
1395
1396	  To compile this as a module, choose M here: the module will be called
1397	  cramfs.  Note that the root file system (the one containing the
1398	  directory /) cannot be compiled as a module.
1399
1400	  If unsure, say N.
1401
1402config VXFS_FS
1403	tristate "FreeVxFS file system support (VERITAS VxFS(TM) compatible)"
1404	depends on BLOCK
1405	help
1406	  FreeVxFS is a file system driver that support the VERITAS VxFS(TM)
1407	  file system format.  VERITAS VxFS(TM) is the standard file system
1408	  of SCO UnixWare (and possibly others) and optionally available
1409	  for Sunsoft Solaris, HP-UX and many other operating systems.
1410	  Currently only readonly access is supported.
1411
1412	  NOTE: the file system type as used by mount(1), mount(2) and
1413	  fstab(5) is 'vxfs' as it describes the file system format, not
1414	  the actual driver.
1415
1416	  To compile this as a module, choose M here: the module will be
1417	  called freevxfs.  If unsure, say N.
1418
1419
1420config HPFS_FS
1421	tristate "OS/2 HPFS file system support"
1422	depends on BLOCK
1423	help
1424	  OS/2 is IBM's operating system for PC's, the same as Warp, and HPFS
1425	  is the file system used for organizing files on OS/2 hard disk
1426	  partitions. Say Y if you want to be able to read files from and
1427	  write files to an OS/2 HPFS partition on your hard drive. OS/2
1428	  floppies however are in regular MSDOS format, so you don't need this
1429	  option in order to be able to read them. Read
1430	  <file:Documentation/filesystems/hpfs.txt>.
1431
1432	  To compile this file system support as a module, choose M here: the
1433	  module will be called hpfs.  If unsure, say N.
1434
1435
1436
1437config QNX4FS_FS
1438	tristate "QNX4 file system support (read only)"
1439	depends on BLOCK
1440	help
1441	  This is the file system used by the real-time operating systems
1442	  QNX 4 and QNX 6 (the latter is also called QNX RTP).
1443	  Further information is available at <http://www.qnx.com/>.
1444	  Say Y if you intend to mount QNX hard disks or floppies.
1445	  Unless you say Y to "QNX4FS read-write support" below, you will
1446	  only be able to read these file systems.
1447
1448	  To compile this file system support as a module, choose M here: the
1449	  module will be called qnx4.
1450
1451	  If you don't know whether you need it, then you don't need it:
1452	  answer N.
1453
1454config QNX4FS_RW
1455	bool "QNX4FS write support (DANGEROUS)"
1456	depends on QNX4FS_FS && EXPERIMENTAL && BROKEN
1457	help
1458	  Say Y if you want to test write support for QNX4 file systems.
1459
1460	  It's currently broken, so for now:
1461	  answer N.
1462
1463
1464
1465config SYSV_FS
1466	tristate "System V/Xenix/V7/Coherent file system support"
1467	depends on BLOCK
1468	help
1469	  SCO, Xenix and Coherent are commercial Unix systems for Intel
1470	  machines, and Version 7 was used on the DEC PDP-11. Saying Y
1471	  here would allow you to read from their floppies and hard disk
1472	  partitions.
1473
1474	  If you have floppies or hard disk partitions like that, it is likely
1475	  that they contain binaries from those other Unix systems; in order
1476	  to run these binaries, you will want to install linux-abi which is
1477	  a set of kernel modules that lets you run SCO, Xenix, Wyse,
1478	  UnixWare, Dell Unix and System V programs under Linux.  It is
1479	  available via FTP (user: ftp) from
1480	  <ftp://ftp.openlinux.org/pub/people/hch/linux-abi/>).
1481	  NOTE: that will work only for binaries from Intel-based systems;
1482	  PDP ones will have to wait until somebody ports Linux to -11 ;-)
1483
1484	  If you only intend to mount files from some other Unix over the
1485	  network using NFS, you don't need the System V file system support
1486	  (but you need NFS file system support obviously).
1487
1488	  Note that this option is generally not needed for floppies, since a
1489	  good portable way to transport files and directories between unixes
1490	  (and even other operating systems) is given by the tar program ("man
1491	  tar" or preferably "info tar").  Note also that this option has
1492	  nothing whatsoever to do with the option "System V IPC". Read about
1493	  the System V file system in
1494	  <file:Documentation/filesystems/sysv-fs.txt>.
1495	  Saying Y here will enlarge your kernel by about 27 KB.
1496
1497	  To compile this as a module, choose M here: the module will be called
1498	  sysv.
1499
1500	  If you haven't heard about all of this before, it's safe to say N.
1501
1502
1503
1504config UFS_FS
1505	tristate "UFS file system support (read only)"
1506	depends on BLOCK
1507	help
1508	  BSD and derivate versions of Unix (such as SunOS, FreeBSD, NetBSD,
1509	  OpenBSD and NeXTstep) use a file system called UFS. Some System V
1510	  Unixes can create and mount hard disk partitions and diskettes using
1511	  this file system as well. Saying Y here will allow you to read from
1512	  these partitions; if you also want to write to them, say Y to the
1513	  experimental "UFS file system write support", below. Please read the
1514	  file <file:Documentation/filesystems/ufs.txt> for more information.
1515
1516          The recently released UFS2 variant (used in FreeBSD 5.x) is
1517          READ-ONLY supported.
1518
1519	  If you only intend to mount files from some other Unix over the
1520	  network using NFS, you don't need the UFS file system support (but
1521	  you need NFS file system support obviously).
1522
1523	  Note that this option is generally not needed for floppies, since a
1524	  good portable way to transport files and directories between unixes
1525	  (and even other operating systems) is given by the tar program ("man
1526	  tar" or preferably "info tar").
1527
1528	  When accessing NeXTstep files, you may need to convert them from the
1529	  NeXT character set to the Latin1 character set; use the program
1530	  recode ("info recode") for this purpose.
1531
1532	  To compile the UFS file system support as a module, choose M here: the
1533	  module will be called ufs.
1534
1535	  If you haven't heard about all of this before, it's safe to say N.
1536
1537config UFS_FS_WRITE
1538	bool "UFS file system write support (DANGEROUS)"
1539	depends on UFS_FS && EXPERIMENTAL
1540	help
1541	  Say Y here if you want to try writing to UFS partitions. This is
1542	  experimental, so you should back up your UFS partitions beforehand.
1543
1544config UFS_DEBUG
1545	bool "UFS debugging"
1546	depends on UFS_FS
1547	help
1548	  If you are experiencing any problems with the UFS filesystem, say
1549	  Y here.  This will result in _many_ additional debugging messages to be
1550	  written to the system log.
1551
1552endmenu
1553
1554menuconfig NETWORK_FILESYSTEMS
1555	bool "Network File Systems"
1556	default y
1557	depends on NET
1558	---help---
1559	  Say Y here to get to see options for network filesystems and
1560	  filesystem-related networking code, such as NFS daemon and
1561	  RPCSEC security modules.
1562	  This option alone does not add any kernel code.
1563
1564	  If you say N, all options in this submenu will be skipped and
1565	  disabled; if unsure, say Y here.
1566
1567if NETWORK_FILESYSTEMS
1568
1569config NFS_FS
1570	tristate "NFS file system support"
1571	depends on INET
1572	select LOCKD
1573	select SUNRPC
1574	select NFS_ACL_SUPPORT if NFS_V3_ACL
1575	help
1576	  If you are connected to some other (usually local) Unix computer
1577	  (using SLIP, PLIP, PPP or Ethernet) and want to mount files residing
1578	  on that computer (the NFS server) using the Network File Sharing
1579	  protocol, say Y. "Mounting files" means that the client can access
1580	  the files with usual UNIX commands as if they were sitting on the
1581	  client's hard disk. For this to work, the server must run the
1582	  programs nfsd and mountd (but does not need to have NFS file system
1583	  support enabled in its kernel). NFS is explained in the Network
1584	  Administrator's Guide, available from
1585	  <http://www.tldp.org/docs.html#guide>, on its man page: "man
1586	  nfs", and in the NFS-HOWTO.
1587
1588	  A superior but less widely used alternative to NFS is provided by
1589	  the Coda file system; see "Coda file system support" below.
1590
1591	  If you say Y here, you should have said Y to TCP/IP networking also.
1592	  This option would enlarge your kernel by about 27 KB.
1593
1594	  To compile this file system support as a module, choose M here: the
1595	  module will be called nfs.
1596
1597	  If you are configuring a diskless machine which will mount its root
1598	  file system over NFS at boot time, say Y here and to "Kernel
1599	  level IP autoconfiguration" above and to "Root file system on NFS"
1600	  below. You cannot compile this driver as a module in this case.
1601	  There are two packages designed for booting diskless machines over
1602	  the net: netboot, available from
1603	  <http://ftp1.sourceforge.net/netboot/>, and Etherboot,
1604	  available from <http://ftp1.sourceforge.net/etherboot/>.
1605
1606	  If you don't know what all this is about, say N.
1607
1608config NFS_V3
1609	bool "Provide NFSv3 client support"
1610	depends on NFS_FS
1611	help
1612	  Say Y here if you want your NFS client to be able to speak version
1613	  3 of the NFS protocol.
1614
1615	  If unsure, say Y.
1616
1617config NFS_V3_ACL
1618	bool "Provide client support for the NFSv3 ACL protocol extension"
1619	depends on NFS_V3
1620	help
1621	  Implement the NFSv3 ACL protocol extension for manipulating POSIX
1622	  Access Control Lists.  The server should also be compiled with
1623	  the NFSv3 ACL protocol extension; see the CONFIG_NFSD_V3_ACL option.
1624
1625	  If unsure, say N.
1626
1627config NFS_V4
1628	bool "Provide NFSv4 client support (EXPERIMENTAL)"
1629	depends on NFS_FS && EXPERIMENTAL
1630	select RPCSEC_GSS_KRB5
1631	help
1632	  Say Y here if you want your NFS client to be able to speak the newer
1633	  version 4 of the NFS protocol.
1634
1635	  Note: Requires auxiliary userspace daemons which may be found on
1636		http://www.citi.umich.edu/projects/nfsv4/
1637
1638	  If unsure, say N.
1639
1640config NFS_DIRECTIO
1641	bool "Allow direct I/O on NFS files"
1642	depends on NFS_FS
1643	help
1644	  This option enables applications to perform uncached I/O on files
1645	  in NFS file systems using the O_DIRECT open() flag.  When O_DIRECT
1646	  is set for a file, its data is not cached in the system's page
1647	  cache.  Data is moved to and from user-level application buffers
1648	  directly.  Unlike local disk-based file systems, NFS O_DIRECT has
1649	  no alignment restrictions.
1650
1651	  Unless your program is designed to use O_DIRECT properly, you are
1652	  much better off allowing the NFS client to manage data caching for
1653	  you.  Misusing O_DIRECT can cause poor server performance or network
1654	  storms.  This kernel build option defaults OFF to avoid exposing
1655	  system administrators unwittingly to a potentially hazardous
1656	  feature.
1657
1658	  For more details on NFS O_DIRECT, see fs/nfs/direct.c.
1659
1660	  If unsure, say N.  This reduces the size of the NFS client, and
1661	  causes open() to return EINVAL if a file residing in NFS is
1662	  opened with the O_DIRECT flag.
1663
1664config NFSD
1665	tristate "NFS server support"
1666	depends on INET
1667	select LOCKD
1668	select SUNRPC
1669	select EXPORTFS
1670	select NFSD_V2_ACL if NFSD_V3_ACL
1671	select NFS_ACL_SUPPORT if NFSD_V2_ACL
1672	select NFSD_TCP if NFSD_V4
1673	select CRYPTO_MD5 if NFSD_V4
1674	select CRYPTO if NFSD_V4
1675	select FS_POSIX_ACL if NFSD_V4
1676	help
1677	  If you want your Linux box to act as an NFS *server*, so that other
1678	  computers on your local network which support NFS can access certain
1679	  directories on your box transparently, you have two options: you can
1680	  use the self-contained user space program nfsd, in which case you
1681	  should say N here, or you can say Y and use the kernel based NFS
1682	  server. The advantage of the kernel based solution is that it is
1683	  faster.
1684
1685	  In either case, you will need support software; the respective
1686	  locations are given in the file <file:Documentation/Changes> in the
1687	  NFS section.
1688
1689	  If you say Y here, you will get support for version 2 of the NFS
1690	  protocol (NFSv2). If you also want NFSv3, say Y to the next question
1691	  as well.
1692
1693	  Please read the NFS-HOWTO, available from
1694	  <http://www.tldp.org/docs.html#howto>.
1695
1696	  To compile the NFS server support as a module, choose M here: the
1697	  module will be called nfsd.  If unsure, say N.
1698
1699config NFSD_V2_ACL
1700	bool
1701	depends on NFSD
1702
1703config NFSD_V3
1704	bool "Provide NFSv3 server support"
1705	depends on NFSD
1706	help
1707	  If you would like to include the NFSv3 server as well as the NFSv2
1708	  server, say Y here.  If unsure, say Y.
1709
1710config NFSD_V3_ACL
1711	bool "Provide server support for the NFSv3 ACL protocol extension"
1712	depends on NFSD_V3
1713	help
1714	  Implement the NFSv3 ACL protocol extension for manipulating POSIX
1715	  Access Control Lists on exported file systems. NFS clients should
1716	  be compiled with the NFSv3 ACL protocol extension; see the
1717	  CONFIG_NFS_V3_ACL option.  If unsure, say N.
1718
1719config NFSD_V4
1720	bool "Provide NFSv4 server support (EXPERIMENTAL)"
1721	depends on NFSD && NFSD_V3 && EXPERIMENTAL
1722	select RPCSEC_GSS_KRB5
1723	help
1724	  If you would like to include the NFSv4 server as well as the NFSv2
1725	  and NFSv3 servers, say Y here.  This feature is experimental, and
1726	  should only be used if you are interested in helping to test NFSv4.
1727	  If unsure, say N.
1728
1729config NFSD_TCP
1730	bool "Provide NFS server over TCP support"
1731	depends on NFSD
1732	default y
1733	help
1734	  If you want your NFS server to support TCP connections, say Y here.
1735	  TCP connections usually perform better than the default UDP when
1736	  the network is lossy or congested.  If unsure, say Y.
1737
1738config ROOT_NFS
1739	bool "Root file system on NFS"
1740	depends on NFS_FS=y && IP_PNP
1741	help
1742	  If you want your Linux box to mount its whole root file system (the
1743	  one containing the directory /) from some other computer over the
1744	  net via NFS (presumably because your box doesn't have a hard disk),
1745	  say Y. Read <file:Documentation/nfsroot.txt> for details. It is
1746	  likely that in this case, you also want to say Y to "Kernel level IP
1747	  autoconfiguration" so that your box can discover its network address
1748	  at boot time.
1749
1750	  Most people say N here.
1751
1752config LOCKD
1753	tristate
1754
1755config LOCKD_V4
1756	bool
1757	depends on NFSD_V3 || NFS_V3
1758	default y
1759
1760config EXPORTFS
1761	tristate
1762
1763config NFS_ACL_SUPPORT
1764	tristate
1765	select FS_POSIX_ACL
1766
1767config NFS_COMMON
1768	bool
1769	depends on NFSD || NFS_FS
1770	default y
1771
1772config SUNRPC
1773	tristate
1774
1775config SUNRPC_GSS
1776	tristate
1777
1778config SUNRPC_XPRT_RDMA
1779	tristate "RDMA transport for sunrpc (EXPERIMENTAL)"
1780	depends on SUNRPC && INFINIBAND && EXPERIMENTAL
1781	default m
1782	help
1783	  Adds a client RPC transport for supporting kernel NFS over RDMA
1784	  mounts, including Infiniband and iWARP. Experimental.
1785
1786config SUNRPC_BIND34
1787	bool "Support for rpcbind versions 3 & 4 (EXPERIMENTAL)"
1788	depends on SUNRPC && EXPERIMENTAL
1789	help
1790	  Provides kernel support for querying rpcbind servers via versions 3
1791	  and 4 of the rpcbind protocol.  The kernel automatically falls back
1792	  to version 2 if a remote rpcbind service does not support versions
1793	  3 or 4.
1794
1795	  If unsure, say N to get traditional behavior (version 2 rpcbind
1796	  requests only).
1797
1798config RPCSEC_GSS_KRB5
1799	tristate "Secure RPC: Kerberos V mechanism (EXPERIMENTAL)"
1800	depends on SUNRPC && EXPERIMENTAL
1801	select SUNRPC_GSS
1802	select CRYPTO
1803	select CRYPTO_MD5
1804	select CRYPTO_DES
1805	select CRYPTO_CBC
1806	help
1807	  Provides for secure RPC calls by means of a gss-api
1808	  mechanism based on Kerberos V5. This is required for
1809	  NFSv4.
1810
1811	  Note: Requires an auxiliary userspace daemon which may be found on
1812		http://www.citi.umich.edu/projects/nfsv4/
1813
1814	  If unsure, say N.
1815
1816config RPCSEC_GSS_SPKM3
1817	tristate "Secure RPC: SPKM3 mechanism (EXPERIMENTAL)"
1818	depends on SUNRPC && EXPERIMENTAL
1819	select SUNRPC_GSS
1820	select CRYPTO
1821	select CRYPTO_MD5
1822	select CRYPTO_DES
1823	select CRYPTO_CAST5
1824	select CRYPTO_CBC
1825	help
1826	  Provides for secure RPC calls by means of a gss-api
1827	  mechanism based on the SPKM3 public-key mechanism.
1828
1829	  Note: Requires an auxiliary userspace daemon which may be found on
1830	  	http://www.citi.umich.edu/projects/nfsv4/
1831
1832	  If unsure, say N.
1833
1834config SMB_FS
1835	tristate "SMB file system support (to mount Windows shares etc.)"
1836	depends on INET
1837	select NLS
1838	help
1839	  SMB (Server Message Block) is the protocol Windows for Workgroups
1840	  (WfW), Windows 95/98, Windows NT and OS/2 Lan Manager use to share
1841	  files and printers over local networks.  Saying Y here allows you to
1842	  mount their file systems (often called "shares" in this context) and
1843	  access them just like any other Unix directory.  Currently, this
1844	  works only if the Windows machines use TCP/IP as the underlying
1845	  transport protocol, and not NetBEUI.  For details, read
1846	  <file:Documentation/filesystems/smbfs.txt> and the SMB-HOWTO,
1847	  available from <http://www.tldp.org/docs.html#howto>.
1848
1849	  Note: if you just want your box to act as an SMB *server* and make
1850	  files and printing services available to Windows clients (which need
1851	  to have a TCP/IP stack), you don't need to say Y here; you can use
1852	  the program SAMBA (available from <ftp://ftp.samba.org/pub/samba/>)
1853	  for that.
1854
1855	  General information about how to connect Linux, Windows machines and
1856	  Macs is on the WWW at <http://www.eats.com/linux_mac_win.html>.
1857
1858	  To compile the SMB support as a module, choose M here: the module will
1859	  be called smbfs.  Most people say N, however.
1860
1861config SMB_NLS_DEFAULT
1862	bool "Use a default NLS"
1863	depends on SMB_FS
1864	help
1865	  Enabling this will make smbfs use nls translations by default. You
1866	  need to specify the local charset (CONFIG_NLS_DEFAULT) in the nls
1867	  settings and you need to give the default nls for the SMB server as
1868	  CONFIG_SMB_NLS_REMOTE.
1869
1870	  The nls settings can be changed at mount time, if your smbmount
1871	  supports that, using the codepage and iocharset parameters.
1872
1873	  smbmount from samba 2.2.0 or later supports this.
1874
1875config SMB_NLS_REMOTE
1876	string "Default Remote NLS Option"
1877	depends on SMB_NLS_DEFAULT
1878	default "cp437"
1879	help
1880	  This setting allows you to specify a default value for which
1881	  codepage the server uses. If this field is left blank no
1882	  translations will be done by default. The local codepage/charset
1883	  default to CONFIG_NLS_DEFAULT.
1884
1885	  The nls settings can be changed at mount time, if your smbmount
1886	  supports that, using the codepage and iocharset parameters.
1887
1888	  smbmount from samba 2.2.0 or later supports this.
1889
1890config CIFS
1891	tristate "CIFS support (advanced network filesystem for Samba, Window and other CIFS compliant servers)"
1892	depends on INET
1893	select NLS
1894	help
1895	  This is the client VFS module for the Common Internet File System
1896	  (CIFS) protocol which is the successor to the Server Message Block
1897	  (SMB) protocol, the native file sharing mechanism for most early
1898	  PC operating systems.  The CIFS protocol is fully supported by
1899	  file servers such as Windows 2000 (including Windows 2003, NT 4
1900	  and Windows XP) as well by Samba (which provides excellent CIFS
1901	  server support for Linux and many other operating systems). Limited
1902	  support for OS/2 and Windows ME and similar servers is provided as
1903	  well.
1904
1905	  The cifs module provides an advanced network file system
1906	  client for mounting to CIFS compliant servers.  It includes
1907	  support for DFS (hierarchical name space), secure per-user
1908	  session establishment via Kerberos or NTLM or NTLMv2,
1909	  safe distributed caching (oplock), optional packet
1910	  signing, Unicode and other internationalization improvements.
1911	  If you need to mount to Samba or Windows from this machine, say Y.
1912
1913config CIFS_STATS
1914        bool "CIFS statistics"
1915        depends on CIFS
1916        help
1917          Enabling this option will cause statistics for each server share
1918	  mounted by the cifs client to be displayed in /proc/fs/cifs/Stats
1919
1920config CIFS_STATS2
1921	bool "Extended statistics"
1922	depends on CIFS_STATS
1923	help
1924	  Enabling this option will allow more detailed statistics on SMB
1925	  request timing to be displayed in /proc/fs/cifs/DebugData and also
1926	  allow optional logging of slow responses to dmesg (depending on the
1927	  value of /proc/fs/cifs/cifsFYI, see fs/cifs/README for more details).
1928	  These additional statistics may have a minor effect on performance
1929	  and memory utilization.
1930
1931	  Unless you are a developer or are doing network performance analysis
1932	  or tuning, say N.
1933
1934config CIFS_WEAK_PW_HASH
1935	bool "Support legacy servers which use weaker LANMAN security"
1936	depends on CIFS
1937	help
1938	  Modern CIFS servers including Samba and most Windows versions
1939	  (since 1997) support stronger NTLM (and even NTLMv2 and Kerberos)
1940	  security mechanisms. These hash the password more securely
1941	  than the mechanisms used in the older LANMAN version of the
1942	  SMB protocol but LANMAN based authentication is needed to
1943	  establish sessions with some old SMB servers.
1944
1945	  Enabling this option allows the cifs module to mount to older
1946	  LANMAN based servers such as OS/2 and Windows 95, but such
1947	  mounts may be less secure than mounts using NTLM or more recent
1948	  security mechanisms if you are on a public network.  Unless you
1949	  have a need to access old SMB servers (and are on a private
1950	  network) you probably want to say N.  Even if this support
1951	  is enabled in the kernel build, LANMAN authentication will not be
1952	  used automatically. At runtime LANMAN mounts are disabled but
1953	  can be set to required (or optional) either in
1954	  /proc/fs/cifs (see fs/cifs/README for more detail) or via an
1955	  option on the mount command. This support is disabled by
1956	  default in order to reduce the possibility of a downgrade
1957	  attack.
1958
1959	  If unsure, say N.
1960
1961config CIFS_XATTR
1962        bool "CIFS extended attributes"
1963        depends on CIFS
1964        help
1965          Extended attributes are name:value pairs associated with inodes by
1966          the kernel or by users (see the attr(5) manual page, or visit
1967          <http://acl.bestbits.at/> for details).  CIFS maps the name of
1968          extended attributes beginning with the user namespace prefix
1969          to SMB/CIFS EAs. EAs are stored on Windows servers without the
1970          user namespace prefix, but their names are seen by Linux cifs clients
1971          prefaced by the user namespace prefix. The system namespace
1972          (used by some filesystems to store ACLs) is not supported at
1973          this time.
1974
1975          If unsure, say N.
1976
1977config CIFS_POSIX
1978        bool "CIFS POSIX Extensions"
1979        depends on CIFS_XATTR
1980        help
1981          Enabling this option will cause the cifs client to attempt to
1982	  negotiate a newer dialect with servers, such as Samba 3.0.5
1983	  or later, that optionally can handle more POSIX like (rather
1984	  than Windows like) file behavior.  It also enables
1985	  support for POSIX ACLs (getfacl and setfacl) to servers
1986	  (such as Samba 3.10 and later) which can negotiate
1987	  CIFS POSIX ACL support.  If unsure, say N.
1988
1989config CIFS_DEBUG2
1990	bool "Enable additional CIFS debugging routines"
1991	depends on CIFS
1992	help
1993	   Enabling this option adds a few more debugging routines
1994	   to the cifs code which slightly increases the size of
1995	   the cifs module and can cause additional logging of debug
1996	   messages in some error paths, slowing performance. This
1997	   option can be turned off unless you are debugging
1998	   cifs problems.  If unsure, say N.
1999
2000config CIFS_EXPERIMENTAL
2001	  bool "CIFS Experimental Features (EXPERIMENTAL)"
2002	  depends on CIFS && EXPERIMENTAL
2003	  help
2004	    Enables cifs features under testing. These features are
2005	    experimental and currently include DFS support and directory
2006	    change notification ie fcntl(F_DNOTIFY), as well as the upcall
2007	    mechanism which will be used for Kerberos session negotiation
2008	    and uid remapping.  Some of these features also may depend on
2009	    setting a value of 1 to the pseudo-file /proc/fs/cifs/Experimental
2010	    (which is disabled by default). See the file fs/cifs/README
2011	    for more details.  If unsure, say N.
2012
2013config CIFS_UPCALL
2014	  bool "Kerberos/SPNEGO advanced session setup (EXPERIMENTAL)"
2015	  depends on CIFS_EXPERIMENTAL
2016	  depends on KEYS
2017	  help
2018	    Enables an upcall mechanism for CIFS which accesses
2019	    userspace helper utilities to provide SPNEGO packaged (RFC 4178)
2020	    Kerberos tickets which are needed to mount to certain secure servers
2021	    (for which more secure Kerberos authentication is required). If
2022	    unsure, say N.
2023
2024config CIFS_DFS_UPCALL
2025	  bool "DFS feature support (EXPERIMENTAL)"
2026	  depends on CIFS_EXPERIMENTAL
2027	  depends on KEYS
2028	  help
2029	    Enables an upcall mechanism for CIFS which contacts userspace
2030	    helper utilities to provide server name resolution (host names to
2031	    IP addresses) which is needed for implicit mounts of DFS junction
2032	    points. If unsure, say N.
2033
2034config NCP_FS
2035	tristate "NCP file system support (to mount NetWare volumes)"
2036	depends on IPX!=n || INET
2037	help
2038	  NCP (NetWare Core Protocol) is a protocol that runs over IPX and is
2039	  used by Novell NetWare clients to talk to file servers.  It is to
2040	  IPX what NFS is to TCP/IP, if that helps.  Saying Y here allows you
2041	  to mount NetWare file server volumes and to access them just like
2042	  any other Unix directory.  For details, please read the file
2043	  <file:Documentation/filesystems/ncpfs.txt> in the kernel source and
2044	  the IPX-HOWTO from <http://www.tldp.org/docs.html#howto>.
2045
2046	  You do not have to say Y here if you want your Linux box to act as a
2047	  file *server* for Novell NetWare clients.
2048
2049	  General information about how to connect Linux, Windows machines and
2050	  Macs is on the WWW at <http://www.eats.com/linux_mac_win.html>.
2051
2052	  To compile this as a module, choose M here: the module will be called
2053	  ncpfs.  Say N unless you are connected to a Novell network.
2054
2055source "fs/ncpfs/Kconfig"
2056
2057config CODA_FS
2058	tristate "Coda file system support (advanced network fs)"
2059	depends on INET
2060	help
2061	  Coda is an advanced network file system, similar to NFS in that it
2062	  enables you to mount file systems of a remote server and access them
2063	  with regular Unix commands as if they were sitting on your hard
2064	  disk.  Coda has several advantages over NFS: support for
2065	  disconnected operation (e.g. for laptops), read/write server
2066	  replication, security model for authentication and encryption,
2067	  persistent client caches and write back caching.
2068
2069	  If you say Y here, your Linux box will be able to act as a Coda
2070	  *client*.  You will need user level code as well, both for the
2071	  client and server.  Servers are currently user level, i.e. they need
2072	  no kernel support.  Please read
2073	  <file:Documentation/filesystems/coda.txt> and check out the Coda
2074	  home page <http://www.coda.cs.cmu.edu/>.
2075
2076	  To compile the coda client support as a module, choose M here: the
2077	  module will be called coda.
2078
2079config CODA_FS_OLD_API
2080	bool "Use 96-bit Coda file identifiers"
2081	depends on CODA_FS
2082	help
2083	  A new kernel-userspace API had to be introduced for Coda v6.0
2084	  to support larger 128-bit file identifiers as needed by the
2085	  new realms implementation.
2086
2087	  However this new API is not backward compatible with older
2088	  clients. If you really need to run the old Coda userspace
2089	  cache manager then say Y.
2090
2091	  For most cases you probably want to say N.
2092
2093config AFS_FS
2094	tristate "Andrew File System support (AFS) (EXPERIMENTAL)"
2095	depends on INET && EXPERIMENTAL
2096	select AF_RXRPC
2097	help
2098	  If you say Y here, you will get an experimental Andrew File System
2099	  driver. It currently only supports unsecured read-only AFS access.
2100
2101	  See <file:Documentation/filesystems/afs.txt> for more information.
2102
2103	  If unsure, say N.
2104
2105config AFS_DEBUG
2106	bool "AFS dynamic debugging"
2107	depends on AFS_FS
2108	help
2109	  Say Y here to make runtime controllable debugging messages appear.
2110
2111	  See <file:Documentation/filesystems/afs.txt> for more information.
2112
2113	  If unsure, say N.
2114
2115config 9P_FS
2116	tristate "Plan 9 Resource Sharing Support (9P2000) (Experimental)"
2117	depends on INET && NET_9P && EXPERIMENTAL
2118	help
2119	  If you say Y here, you will get experimental support for
2120	  Plan 9 resource sharing via the 9P2000 protocol.
2121
2122	  See <http://v9fs.sf.net> for more information.
2123
2124	  If unsure, say N.
2125
2126endif # NETWORK_FILESYSTEMS
2127
2128if BLOCK
2129menu "Partition Types"
2130
2131source "fs/partitions/Kconfig"
2132
2133endmenu
2134endif
2135
2136source "fs/nls/Kconfig"
2137source "fs/dlm/Kconfig"
2138
2139endmenu
2140