xref: /linux/fs/Kconfig (revision 44a2db43eb715b54618bf01520cc5d46376cdbe2)
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	help
144	  Ext4dev is a predecessor filesystem of the next generation
145	  extended fs ext4, based on ext3 filesystem code. It will be
146	  renamed ext4 fs later, once ext4dev is mature and stabilized.
147
148	  Unlike the change from ext2 filesystem to ext3 filesystem,
149	  the on-disk format of ext4dev is not the same as ext3 any more:
150	  it is based on extent maps and it supports 48-bit physical block
151	  numbers. These combined on-disk format changes will allow
152	  ext4dev/ext4 to handle more than 16 TB filesystem volumes --
153	  a hard limit that ext3 cannot overcome without changing the
154	  on-disk format.
155
156	  Other than extent maps and 48-bit block numbers, ext4dev also is
157	  likely to have other new features such as persistent preallocation,
158	  high resolution time stamps, and larger file support etc.  These
159	  features will be added to ext4dev gradually.
160
161	  To compile this file system support as a module, choose M here. The
162	  module will be called ext4dev.
163
164	  If unsure, say N.
165
166config EXT4DEV_FS_XATTR
167	bool "Ext4dev extended attributes"
168	depends on EXT4DEV_FS
169	default y
170	help
171	  Extended attributes are name:value pairs associated with inodes by
172	  the kernel or by users (see the attr(5) manual page, or visit
173	  <http://acl.bestbits.at/> for details).
174
175	  If unsure, say N.
176
177	  You need this for POSIX ACL support on ext4dev/ext4.
178
179config EXT4DEV_FS_POSIX_ACL
180	bool "Ext4dev POSIX Access Control Lists"
181	depends on EXT4DEV_FS_XATTR
182	select FS_POSIX_ACL
183	help
184	  POSIX Access Control Lists (ACLs) support permissions for users and
185	  groups beyond the owner/group/world scheme.
186
187	  To learn more about Access Control Lists, visit the POSIX ACLs for
188	  Linux website <http://acl.bestbits.at/>.
189
190	  If you don't know what Access Control Lists are, say N
191
192config EXT4DEV_FS_SECURITY
193	bool "Ext4dev Security Labels"
194	depends on EXT4DEV_FS_XATTR
195	help
196	  Security labels support alternative access control models
197	  implemented by security modules like SELinux.  This option
198	  enables an extended attribute handler for file security
199	  labels in the ext4dev/ext4 filesystem.
200
201	  If you are not using a security module that requires using
202	  extended attributes for file security labels, say N.
203
204config JBD
205	tristate
206	help
207	  This is a generic journalling layer for block devices.  It is
208	  currently used by the ext3 and OCFS2 file systems, but it could
209	  also be used to add journal support to other file systems or block
210	  devices such as RAID or LVM.
211
212	  If you are using the ext3 or OCFS2 file systems, you need to
213	  say Y here. If you are not using ext3 OCFS2 then you will probably
214	  want to say N.
215
216	  To compile this device as a module, choose M here: the module will be
217	  called jbd.  If you are compiling ext3 or OCFS2 into the kernel,
218	  you cannot compile this code as a module.
219
220config JBD_DEBUG
221	bool "JBD (ext3) debugging support"
222	depends on JBD
223	help
224	  If you are using the ext3 journaled file system (or potentially any
225	  other file system/device using JBD), this option allows you to
226	  enable debugging output while the system is running, in order to
227	  help track down any problems you are having.  By default the
228	  debugging output will be turned off.
229
230	  If you select Y here, then you will be able to turn on debugging
231	  with "echo N > /proc/sys/fs/jbd-debug", where N is a number between
232	  1 and 5, the higher the number, the more debugging output is
233	  generated.  To turn debugging off again, do
234	  "echo 0 > /proc/sys/fs/jbd-debug".
235
236config JBD2
237	tristate
238	help
239	  This is a generic journaling layer for block devices that support
240	  both 32-bit and 64-bit block numbers.  It is currently used by
241	  the ext4dev/ext4 filesystem, but it could also be used to add
242	  journal support to other file systems or block devices such
243	  as RAID or LVM.
244
245	  If you are using ext4dev/ext4, you need to say Y here. If you are not
246	  using ext4dev/ext4 then you will probably want to say N.
247
248	  To compile this device as a module, choose M here. The module will be
249	  called jbd2.  If you are compiling ext4dev/ext4 into the kernel,
250	  you cannot compile this code as a module.
251
252config JBD2_DEBUG
253	bool "JBD2 (ext4dev/ext4) debugging support"
254	depends on JBD2 && DEBUG_FS
255	help
256	  If you are using the ext4dev/ext4 journaled file system (or
257	  potentially any other filesystem/device using JBD2), this option
258	  allows you to enable debugging output while the system is running,
259	  in order to help track down any problems you are having.
260	  By default, the debugging output will be turned off.
261
262	  If you select Y here, then you will be able to turn on debugging
263	  with "echo N > /sys/kernel/debug/jbd2/jbd2-debug", where N is a
264	  number between 1 and 5. The higher the number, the more debugging
265	  output is generated.  To turn debugging off again, do
266	  "echo 0 > /sys/kernel/debug/jbd2/jbd2-debug".
267
268config FS_MBCACHE
269# Meta block cache for Extended Attributes (ext2/ext3/ext4)
270	tristate
271	depends on EXT2_FS_XATTR || EXT3_FS_XATTR || EXT4DEV_FS_XATTR
272	default y if EXT2_FS=y || EXT3_FS=y || EXT4DEV_FS=y
273	default m if EXT2_FS=m || EXT3_FS=m || EXT4DEV_FS=m
274
275config REISERFS_FS
276	tristate "Reiserfs support"
277	help
278	  Stores not just filenames but the files themselves in a balanced
279	  tree.  Uses journalling.
280
281	  Balanced trees are more efficient than traditional file system
282	  architectural foundations.
283
284	  In general, ReiserFS is as fast as ext2, but is very efficient with
285	  large directories and small files.  Additional patches are needed
286	  for NFS and quotas, please see <http://www.namesys.com/> for links.
287
288	  It is more easily extended to have features currently found in
289	  database and keyword search systems than block allocation based file
290	  systems are.  The next version will be so extended, and will support
291	  plugins consistent with our motto ``It takes more than a license to
292	  make source code open.''
293
294	  Read <http://www.namesys.com/> to learn more about reiserfs.
295
296	  Sponsored by Threshold Networks, Emusic.com, and Bigstorage.com.
297
298	  If you like it, you can pay us to add new features to it that you
299	  need, buy a support contract, or pay us to port it to another OS.
300
301config REISERFS_CHECK
302	bool "Enable reiserfs debug mode"
303	depends on REISERFS_FS
304	help
305	  If you set this to Y, then ReiserFS will perform every check it can
306	  possibly imagine of its internal consistency throughout its
307	  operation.  It will also go substantially slower.  More than once we
308	  have forgotten that this was on, and then gone despondent over the
309	  latest benchmarks.:-) Use of this option allows our team to go all
310	  out in checking for consistency when debugging without fear of its
311	  effect on end users.  If you are on the verge of sending in a bug
312	  report, say Y and you might get a useful error message.  Almost
313	  everyone should say N.
314
315config REISERFS_PROC_INFO
316	bool "Stats in /proc/fs/reiserfs"
317	depends on REISERFS_FS && PROC_FS
318	help
319	  Create under /proc/fs/reiserfs a hierarchy of files, displaying
320	  various ReiserFS statistics and internal data at the expense of
321	  making your kernel or module slightly larger (+8 KB). This also
322	  increases the amount of kernel memory required for each mount.
323	  Almost everyone but ReiserFS developers and people fine-tuning
324	  reiserfs or tracing problems should say N.
325
326config REISERFS_FS_XATTR
327	bool "ReiserFS extended attributes"
328	depends on REISERFS_FS
329	help
330	  Extended attributes are name:value pairs associated with inodes by
331	  the kernel or by users (see the attr(5) manual page, or visit
332	  <http://acl.bestbits.at/> for details).
333
334	  If unsure, say N.
335
336config REISERFS_FS_POSIX_ACL
337	bool "ReiserFS POSIX Access Control Lists"
338	depends on REISERFS_FS_XATTR
339	select FS_POSIX_ACL
340	help
341	  Posix Access Control Lists (ACLs) support permissions for users and
342	  groups beyond the owner/group/world scheme.
343
344	  To learn more about Access Control Lists, visit the Posix ACLs for
345	  Linux website <http://acl.bestbits.at/>.
346
347	  If you don't know what Access Control Lists are, say N
348
349config REISERFS_FS_SECURITY
350	bool "ReiserFS Security Labels"
351	depends on REISERFS_FS_XATTR
352	help
353	  Security labels support alternative access control models
354	  implemented by security modules like SELinux.  This option
355	  enables an extended attribute handler for file security
356	  labels in the ReiserFS filesystem.
357
358	  If you are not using a security module that requires using
359	  extended attributes for file security labels, say N.
360
361config JFS_FS
362	tristate "JFS filesystem support"
363	select NLS
364	help
365	  This is a port of IBM's Journaled Filesystem .  More information is
366	  available in the file <file:Documentation/filesystems/jfs.txt>.
367
368	  If you do not intend to use the JFS filesystem, say N.
369
370config JFS_POSIX_ACL
371	bool "JFS POSIX Access Control Lists"
372	depends on JFS_FS
373	select FS_POSIX_ACL
374	help
375	  Posix Access Control Lists (ACLs) support permissions for users and
376	  groups beyond the owner/group/world scheme.
377
378	  To learn more about Access Control Lists, visit the Posix ACLs for
379	  Linux website <http://acl.bestbits.at/>.
380
381	  If you don't know what Access Control Lists are, say N
382
383config JFS_SECURITY
384	bool "JFS Security Labels"
385	depends on JFS_FS
386	help
387	  Security labels support alternative access control models
388	  implemented by security modules like SELinux.  This option
389	  enables an extended attribute handler for file security
390	  labels in the jfs filesystem.
391
392	  If you are not using a security module that requires using
393	  extended attributes for file security labels, say N.
394
395config JFS_DEBUG
396	bool "JFS debugging"
397	depends on JFS_FS
398	help
399	  If you are experiencing any problems with the JFS filesystem, say
400	  Y here.  This will result in additional debugging messages to be
401	  written to the system log.  Under normal circumstances, this
402	  results in very little overhead.
403
404config JFS_STATISTICS
405	bool "JFS statistics"
406	depends on JFS_FS
407	help
408	  Enabling this option will cause statistics from the JFS file system
409	  to be made available to the user in the /proc/fs/jfs/ directory.
410
411config FS_POSIX_ACL
412# Posix ACL utility routines (for now, only ext2/ext3/jfs/reiserfs)
413#
414# NOTE: you can implement Posix ACLs without these helpers (XFS does).
415# 	Never use this symbol for ifdefs.
416#
417	bool
418	default n
419
420source "fs/xfs/Kconfig"
421source "fs/gfs2/Kconfig"
422
423config OCFS2_FS
424	tristate "OCFS2 file system support"
425	depends on NET && SYSFS
426	select CONFIGFS_FS
427	select JBD
428	select CRC32
429	help
430	  OCFS2 is a general purpose extent based shared disk cluster file
431	  system with many similarities to ext3. It supports 64 bit inode
432	  numbers, and has automatically extending metadata groups which may
433	  also make it attractive for non-clustered use.
434
435	  You'll want to install the ocfs2-tools package in order to at least
436	  get "mount.ocfs2".
437
438	  Project web page:    http://oss.oracle.com/projects/ocfs2
439	  Tools web page:      http://oss.oracle.com/projects/ocfs2-tools
440	  OCFS2 mailing lists: http://oss.oracle.com/projects/ocfs2/mailman/
441
442	  Note: Features which OCFS2 does not support yet:
443	          - extended attributes
444	          - quotas
445	          - cluster aware flock
446	          - Directory change notification (F_NOTIFY)
447	          - Distributed Caching (F_SETLEASE/F_GETLEASE/break_lease)
448	          - POSIX ACLs
449	          - readpages / writepages (not user visible)
450
451config OCFS2_DEBUG_MASKLOG
452	bool "OCFS2 logging support"
453	depends on OCFS2_FS
454	default y
455	help
456	  The ocfs2 filesystem has an extensive logging system.  The system
457	  allows selection of events to log via files in /sys/o2cb/logmask/.
458	  This option will enlarge your kernel, but it allows debugging of
459	  ocfs2 filesystem issues.
460
461config MINIX_FS
462	tristate "Minix fs support"
463	help
464	  Minix is a simple operating system used in many classes about OS's.
465	  The minix file system (method to organize files on a hard disk
466	  partition or a floppy disk) was the original file system for Linux,
467	  but has been superseded by the second extended file system ext2fs.
468	  You don't want to use the minix file system on your hard disk
469	  because of certain built-in restrictions, but it is sometimes found
470	  on older Linux floppy disks.  This option will enlarge your kernel
471	  by about 28 KB. If unsure, say N.
472
473	  To compile this file system support as a module, choose M here: the
474	  module will be called minix.  Note that the file system of your root
475	  partition (the one containing the directory /) cannot be compiled as
476	  a module.
477
478config ROMFS_FS
479	tristate "ROM file system support"
480	---help---
481	  This is a very small read-only file system mainly intended for
482	  initial ram disks of installation disks, but it could be used for
483	  other read-only media as well.  Read
484	  <file:Documentation/filesystems/romfs.txt> for details.
485
486	  To compile this file system support as a module, choose M here: the
487	  module will be called romfs.  Note that the file system of your
488	  root partition (the one containing the directory /) cannot be a
489	  module.
490
491	  If you don't know whether you need it, then you don't need it:
492	  answer N.
493
494endif
495
496config INOTIFY
497	bool "Inotify file change notification support"
498	default y
499	---help---
500	  Say Y here to enable inotify support.  Inotify is a file change
501	  notification system and a replacement for dnotify.  Inotify fixes
502	  numerous shortcomings in dnotify and introduces several new features
503	  including multiple file events, one-shot support, and unmount
504	  notification.
505
506	  For more information, see Documentation/filesystems/inotify.txt
507
508	  If unsure, say Y.
509
510config INOTIFY_USER
511	bool "Inotify support for userspace"
512	depends on INOTIFY
513	default y
514	---help---
515	  Say Y here to enable inotify support for userspace, including the
516	  associated system calls.  Inotify allows monitoring of both files and
517	  directories via a single open fd.  Events are read from the file
518	  descriptor, which is also select()- and poll()-able.
519
520	  For more information, see Documentation/filesystems/inotify.txt
521
522	  If unsure, say Y.
523
524config QUOTA
525	bool "Quota support"
526	help
527	  If you say Y here, you will be able to set per user limits for disk
528	  usage (also called disk quotas). Currently, it works for the
529	  ext2, ext3, and reiserfs file system. ext3 also supports journalled
530	  quotas for which you don't need to run quotacheck(8) after an unclean
531	  shutdown.
532	  For further details, read the Quota mini-HOWTO, available from
533	  <http://www.tldp.org/docs.html#howto>, or the documentation provided
534	  with the quota tools. Probably the quota support is only useful for
535	  multi user systems. If unsure, say N.
536
537config QUOTA_NETLINK_INTERFACE
538	bool "Report quota messages through netlink interface"
539	depends on QUOTA && NET
540	help
541	  If you say Y here, quota warnings (about exceeding softlimit, reaching
542	  hardlimit, etc.) will be reported through netlink interface. If unsure,
543	  say Y.
544
545config PRINT_QUOTA_WARNING
546	bool "Print quota warnings to console (OBSOLETE)"
547	depends on QUOTA
548	default y
549	help
550	  If you say Y here, quota warnings (about exceeding softlimit, reaching
551	  hardlimit, etc.) will be printed to the process' controlling terminal.
552	  Note that this behavior is currently deprecated and may go away in
553	  future. Please use notification via netlink socket instead.
554
555config QFMT_V1
556	tristate "Old quota format support"
557	depends on QUOTA
558	help
559	  This quota format was (is) used by kernels earlier than 2.4.22. If
560	  you have quota working and you don't want to convert to new quota
561	  format say Y here.
562
563config QFMT_V2
564	tristate "Quota format v2 support"
565	depends on QUOTA
566	help
567	  This quota format allows using quotas with 32-bit UIDs/GIDs. If you
568	  need this functionality say Y here.
569
570config QUOTACTL
571	bool
572	depends on XFS_QUOTA || QUOTA
573	default y
574
575config DNOTIFY
576	bool "Dnotify support"
577	default y
578	help
579	  Dnotify is a directory-based per-fd file change notification system
580	  that uses signals to communicate events to user-space.  There exist
581	  superior alternatives, but some applications may still rely on
582	  dnotify.
583
584	  If unsure, say Y.
585
586config AUTOFS_FS
587	tristate "Kernel automounter support"
588	help
589	  The automounter is a tool to automatically mount remote file systems
590	  on demand. This implementation is partially kernel-based to reduce
591	  overhead in the already-mounted case; this is unlike the BSD
592	  automounter (amd), which is a pure user space daemon.
593
594	  To use the automounter you need the user-space tools from the autofs
595	  package; you can find the location in <file:Documentation/Changes>.
596	  You also want to answer Y to "NFS file system support", below.
597
598	  If you want to use the newer version of the automounter with more
599	  features, say N here and say Y to "Kernel automounter v4 support",
600	  below.
601
602	  To compile this support as a module, choose M here: the module will be
603	  called autofs.
604
605	  If you are not a part of a fairly large, distributed network, you
606	  probably do not need an automounter, and can say N here.
607
608config AUTOFS4_FS
609	tristate "Kernel automounter version 4 support (also supports v3)"
610	help
611	  The automounter is a tool to automatically mount remote file systems
612	  on demand. This implementation is partially kernel-based to reduce
613	  overhead in the already-mounted case; this is unlike the BSD
614	  automounter (amd), which is a pure user space daemon.
615
616	  To use the automounter you need the user-space tools from
617	  <ftp://ftp.kernel.org/pub/linux/daemons/autofs/v4/>; you also
618	  want to answer Y to "NFS file system support", below.
619
620	  To compile this support as a module, choose M here: the module will be
621	  called autofs4.  You will need to add "alias autofs autofs4" to your
622	  modules configuration file.
623
624	  If you are not a part of a fairly large, distributed network or
625	  don't have a laptop which needs to dynamically reconfigure to the
626	  local network, you probably do not need an automounter, and can say
627	  N here.
628
629config FUSE_FS
630	tristate "Filesystem in Userspace support"
631	help
632	  With FUSE it is possible to implement a fully functional filesystem
633	  in a userspace program.
634
635	  There's also companion library: libfuse.  This library along with
636	  utilities is available from the FUSE homepage:
637	  <http://fuse.sourceforge.net/>
638
639	  See <file:Documentation/filesystems/fuse.txt> for more information.
640	  See <file:Documentation/Changes> for needed library/utility version.
641
642	  If you want to develop a userspace FS, or if you want to use
643	  a filesystem based on FUSE, answer Y or M.
644
645config GENERIC_ACL
646	bool
647	select FS_POSIX_ACL
648
649if BLOCK
650menu "CD-ROM/DVD Filesystems"
651
652config ISO9660_FS
653	tristate "ISO 9660 CDROM file system support"
654	help
655	  This is the standard file system used on CD-ROMs.  It was previously
656	  known as "High Sierra File System" and is called "hsfs" on other
657	  Unix systems.  The so-called Rock-Ridge extensions which allow for
658	  long Unix filenames and symbolic links are also supported by this
659	  driver.  If you have a CD-ROM drive and want to do more with it than
660	  just listen to audio CDs and watch its LEDs, say Y (and read
661	  <file:Documentation/filesystems/isofs.txt> and the CD-ROM-HOWTO,
662	  available from <http://www.tldp.org/docs.html#howto>), thereby
663	  enlarging your kernel by about 27 KB; otherwise say N.
664
665	  To compile this file system support as a module, choose M here: the
666	  module will be called isofs.
667
668config JOLIET
669	bool "Microsoft Joliet CDROM extensions"
670	depends on ISO9660_FS
671	select NLS
672	help
673	  Joliet is a Microsoft extension for the ISO 9660 CD-ROM file system
674	  which allows for long filenames in unicode format (unicode is the
675	  new 16 bit character code, successor to ASCII, which encodes the
676	  characters of almost all languages of the world; see
677	  <http://www.unicode.org/> for more information).  Say Y here if you
678	  want to be able to read Joliet CD-ROMs under Linux.
679
680config ZISOFS
681	bool "Transparent decompression extension"
682	depends on ISO9660_FS
683	select ZLIB_INFLATE
684	help
685	  This is a Linux-specific extension to RockRidge which lets you store
686	  data in compressed form on a CD-ROM and have it transparently
687	  decompressed when the CD-ROM is accessed.  See
688	  <http://www.kernel.org/pub/linux/utils/fs/zisofs/> for the tools
689	  necessary to create such a filesystem.  Say Y here if you want to be
690	  able to read such compressed CD-ROMs.
691
692config UDF_FS
693	tristate "UDF file system support"
694	help
695	  This is the new file system used on some CD-ROMs and DVDs. Say Y if
696	  you intend to mount DVD discs or CDRW's written in packet mode, or
697	  if written to by other UDF utilities, such as DirectCD.
698	  Please read <file:Documentation/filesystems/udf.txt>.
699
700	  To compile this file system support as a module, choose M here: the
701	  module will be called udf.
702
703	  If unsure, say N.
704
705config UDF_NLS
706	bool
707	default y
708	depends on (UDF_FS=m && NLS) || (UDF_FS=y && NLS=y)
709
710endmenu
711endif
712
713if BLOCK
714menu "DOS/FAT/NT Filesystems"
715
716config FAT_FS
717	tristate
718	select NLS
719	help
720	  If you want to use one of the FAT-based file systems (the MS-DOS and
721	  VFAT (Windows 95) file systems), then you must say Y or M here
722	  to include FAT support. You will then be able to mount partitions or
723	  diskettes with FAT-based file systems and transparently access the
724	  files on them, i.e. MSDOS files will look and behave just like all
725	  other Unix files.
726
727	  This FAT support is not a file system in itself, it only provides
728	  the foundation for the other file systems. You will have to say Y or
729	  M to at least one of "MSDOS fs support" or "VFAT fs support" in
730	  order to make use of it.
731
732	  Another way to read and write MSDOS floppies and hard drive
733	  partitions from within Linux (but not transparently) is with the
734	  mtools ("man mtools") program suite. You don't need to say Y here in
735	  order to do that.
736
737	  If you need to move large files on floppies between a DOS and a
738	  Linux box, say Y here, mount the floppy under Linux with an MSDOS
739	  file system and use GNU tar's M option. GNU tar is a program
740	  available for Unix and DOS ("man tar" or "info tar").
741
742	  The FAT support will enlarge your kernel by about 37 KB. If unsure,
743	  say Y.
744
745	  To compile this as a module, choose M here: the module will be called
746	  fat.  Note that if you compile the FAT support as a module, you
747	  cannot compile any of the FAT-based file systems into the kernel
748	  -- they will have to be modules as well.
749
750config MSDOS_FS
751	tristate "MSDOS fs support"
752	select FAT_FS
753	help
754	  This allows you to mount MSDOS partitions of your hard drive (unless
755	  they are compressed; to access compressed MSDOS partitions under
756	  Linux, you can either use the DOS emulator DOSEMU, described in the
757	  DOSEMU-HOWTO, available from
758	  <http://www.tldp.org/docs.html#howto>, or try dmsdosfs in
759	  <ftp://ibiblio.org/pub/Linux/system/filesystems/dosfs/>. If you
760	  intend to use dosemu with a non-compressed MSDOS partition, say Y
761	  here) and MSDOS floppies. This means that file access becomes
762	  transparent, i.e. the MSDOS files look and behave just like all
763	  other Unix files.
764
765	  If you have Windows 95 or Windows NT installed on your MSDOS
766	  partitions, you should use the VFAT file system (say Y to "VFAT fs
767	  support" below), or you will not be able to see the long filenames
768	  generated by Windows 95 / Windows NT.
769
770	  This option will enlarge your kernel by about 7 KB. If unsure,
771	  answer Y. This will only work if you said Y to "DOS FAT fs support"
772	  as well. To compile this as a module, choose M here: the module will
773	  be called msdos.
774
775config VFAT_FS
776	tristate "VFAT (Windows-95) fs support"
777	select FAT_FS
778	help
779	  This option provides support for normal Windows file systems with
780	  long filenames.  That includes non-compressed FAT-based file systems
781	  used by Windows 95, Windows 98, Windows NT 4.0, and the Unix
782	  programs from the mtools package.
783
784	  The VFAT support enlarges your kernel by about 10 KB and it only
785	  works if you said Y to the "DOS FAT fs support" above.  Please read
786	  the file <file:Documentation/filesystems/vfat.txt> for details.  If
787	  unsure, say Y.
788
789	  To compile this as a module, choose M here: the module will be called
790	  vfat.
791
792config FAT_DEFAULT_CODEPAGE
793	int "Default codepage for FAT"
794	depends on MSDOS_FS || VFAT_FS
795	default 437
796	help
797	  This option should be set to the codepage of your FAT filesystems.
798	  It can be overridden with the "codepage" mount option.
799	  See <file:Documentation/filesystems/vfat.txt> for more information.
800
801config FAT_DEFAULT_IOCHARSET
802	string "Default iocharset for FAT"
803	depends on VFAT_FS
804	default "iso8859-1"
805	help
806	  Set this to the default input/output character set you'd
807	  like FAT to use. It should probably match the character set
808	  that most of your FAT filesystems use, and can be overridden
809	  with the "iocharset" mount option for FAT filesystems.
810	  Note that "utf8" is not recommended for FAT filesystems.
811	  If unsure, you shouldn't set "utf8" here.
812	  See <file:Documentation/filesystems/vfat.txt> for more information.
813
814config NTFS_FS
815	tristate "NTFS file system support"
816	select NLS
817	help
818	  NTFS is the file system of Microsoft Windows NT, 2000, XP and 2003.
819
820	  Saying Y or M here enables read support.  There is partial, but
821	  safe, write support available.  For write support you must also
822	  say Y to "NTFS write support" below.
823
824	  There are also a number of user-space tools available, called
825	  ntfsprogs.  These include ntfsundelete and ntfsresize, that work
826	  without NTFS support enabled in the kernel.
827
828	  This is a rewrite from scratch of Linux NTFS support and replaced
829	  the old NTFS code starting with Linux 2.5.11.  A backport to
830	  the Linux 2.4 kernel series is separately available as a patch
831	  from the project web site.
832
833	  For more information see <file:Documentation/filesystems/ntfs.txt>
834	  and <http://linux-ntfs.sourceforge.net/>.
835
836	  To compile this file system support as a module, choose M here: the
837	  module will be called ntfs.
838
839	  If you are not using Windows NT, 2000, XP or 2003 in addition to
840	  Linux on your computer it is safe to say N.
841
842config NTFS_DEBUG
843	bool "NTFS debugging support"
844	depends on NTFS_FS
845	help
846	  If you are experiencing any problems with the NTFS file system, say
847	  Y here.  This will result in additional consistency checks to be
848	  performed by the driver as well as additional debugging messages to
849	  be written to the system log.  Note that debugging messages are
850	  disabled by default.  To enable them, supply the option debug_msgs=1
851	  at the kernel command line when booting the kernel or as an option
852	  to insmod when loading the ntfs module.  Once the driver is active,
853	  you can enable debugging messages by doing (as root):
854	  echo 1 > /proc/sys/fs/ntfs-debug
855	  Replacing the "1" with "0" would disable debug messages.
856
857	  If you leave debugging messages disabled, this results in little
858	  overhead, but enabling debug messages results in very significant
859	  slowdown of the system.
860
861	  When reporting bugs, please try to have available a full dump of
862	  debugging messages while the misbehaviour was occurring.
863
864config NTFS_RW
865	bool "NTFS write support"
866	depends on NTFS_FS
867	help
868	  This enables the partial, but safe, write support in the NTFS driver.
869
870	  The only supported operation is overwriting existing files, without
871	  changing the file length.  No file or directory creation, deletion or
872	  renaming is possible.  Note only non-resident files can be written to
873	  so you may find that some very small files (<500 bytes or so) cannot
874	  be written to.
875
876	  While we cannot guarantee that it will not damage any data, we have
877	  so far not received a single report where the driver would have
878	  damaged someones data so we assume it is perfectly safe to use.
879
880	  Note:  While write support is safe in this version (a rewrite from
881	  scratch of the NTFS support), it should be noted that the old NTFS
882	  write support, included in Linux 2.5.10 and before (since 1997),
883	  is not safe.
884
885	  This is currently useful with TopologiLinux.  TopologiLinux is run
886	  on top of any DOS/Microsoft Windows system without partitioning your
887	  hard disk.  Unlike other Linux distributions TopologiLinux does not
888	  need its own partition.  For more information see
889	  <http://topologi-linux.sourceforge.net/>
890
891	  It is perfectly safe to say N here.
892
893endmenu
894endif
895
896menu "Pseudo filesystems"
897
898config PROC_FS
899	bool "/proc file system support" if EMBEDDED
900	default y
901	help
902	  This is a virtual file system providing information about the status
903	  of the system. "Virtual" means that it doesn't take up any space on
904	  your hard disk: the files are created on the fly by the kernel when
905	  you try to access them. Also, you cannot read the files with older
906	  version of the program less: you need to use more or cat.
907
908	  It's totally cool; for example, "cat /proc/interrupts" gives
909	  information about what the different IRQs are used for at the moment
910	  (there is a small number of Interrupt ReQuest lines in your computer
911	  that are used by the attached devices to gain the CPU's attention --
912	  often a source of trouble if two devices are mistakenly configured
913	  to use the same IRQ). The program procinfo to display some
914	  information about your system gathered from the /proc file system.
915
916	  Before you can use the /proc file system, it has to be mounted,
917	  meaning it has to be given a location in the directory hierarchy.
918	  That location should be /proc. A command such as "mount -t proc proc
919	  /proc" or the equivalent line in /etc/fstab does the job.
920
921	  The /proc file system is explained in the file
922	  <file:Documentation/filesystems/proc.txt> and on the proc(5) manpage
923	  ("man 5 proc").
924
925	  This option will enlarge your kernel by about 67 KB. Several
926	  programs depend on this, so everyone should say Y here.
927
928config PROC_KCORE
929	bool "/proc/kcore support" if !ARM
930	depends on PROC_FS && MMU
931
932config PROC_VMCORE
933        bool "/proc/vmcore support (EXPERIMENTAL)"
934        depends on PROC_FS && EXPERIMENTAL && CRASH_DUMP
935	default y
936        help
937        Exports the dump image of crashed kernel in ELF format.
938
939config PROC_SYSCTL
940	bool "Sysctl support (/proc/sys)" if EMBEDDED
941	depends on PROC_FS
942	select SYSCTL
943	default y
944	---help---
945	  The sysctl interface provides a means of dynamically changing
946	  certain kernel parameters and variables on the fly without requiring
947	  a recompile of the kernel or reboot of the system.  The primary
948	  interface is through /proc/sys.  If you say Y here a tree of
949	  modifiable sysctl entries will be generated beneath the
950          /proc/sys directory. They are explained in the files
951	  in <file:Documentation/sysctl/>.  Note that enabling this
952	  option will enlarge the kernel by at least 8 KB.
953
954	  As it is generally a good thing, you should say Y here unless
955	  building a kernel for install/rescue disks or your system is very
956	  limited in memory.
957
958config SYSFS
959	bool "sysfs file system support" if EMBEDDED
960	default y
961	help
962	The sysfs filesystem is a virtual filesystem that the kernel uses to
963	export internal kernel objects, their attributes, and their
964	relationships to one another.
965
966	Users can use sysfs to ascertain useful information about the running
967	kernel, such as the devices the kernel has discovered on each bus and
968	which driver each is bound to. sysfs can also be used to tune devices
969	and other kernel subsystems.
970
971	Some system agents rely on the information in sysfs to operate.
972	/sbin/hotplug uses device and object attributes in sysfs to assist in
973	delegating policy decisions, like persistently naming devices.
974
975	sysfs is currently used by the block subsystem to mount the root
976	partition.  If sysfs is disabled you must specify the boot device on
977	the kernel boot command line via its major and minor numbers.  For
978	example, "root=03:01" for /dev/hda1.
979
980	Designers of embedded systems may wish to say N here to conserve space.
981
982config TMPFS
983	bool "Virtual memory file system support (former shm fs)"
984	help
985	  Tmpfs is a file system which keeps all files in virtual memory.
986
987	  Everything in tmpfs is temporary in the sense that no files will be
988	  created on your hard drive. The files live in memory and swap
989	  space. If you unmount a tmpfs instance, everything stored therein is
990	  lost.
991
992	  See <file:Documentation/filesystems/tmpfs.txt> for details.
993
994config TMPFS_POSIX_ACL
995	bool "Tmpfs POSIX Access Control Lists"
996	depends on TMPFS
997	select GENERIC_ACL
998	help
999	  POSIX Access Control Lists (ACLs) support permissions for users and
1000	  groups beyond the owner/group/world scheme.
1001
1002	  To learn more about Access Control Lists, visit the POSIX ACLs for
1003	  Linux website <http://acl.bestbits.at/>.
1004
1005	  If you don't know what Access Control Lists are, say N.
1006
1007config HUGETLBFS
1008	bool "HugeTLB file system support"
1009	depends on X86 || IA64 || PPC64 || SPARC64 || (SUPERH && MMU) || BROKEN
1010	help
1011	  hugetlbfs is a filesystem backing for HugeTLB pages, based on
1012	  ramfs. For architectures that support it, say Y here and read
1013	  <file:Documentation/vm/hugetlbpage.txt> for details.
1014
1015	  If unsure, say N.
1016
1017config HUGETLB_PAGE
1018	def_bool HUGETLBFS
1019
1020config CONFIGFS_FS
1021	tristate "Userspace-driven configuration filesystem (EXPERIMENTAL)"
1022	depends on SYSFS && EXPERIMENTAL
1023	help
1024	  configfs is a ram-based filesystem that provides the converse
1025	  of sysfs's functionality. Where sysfs is a filesystem-based
1026	  view of kernel objects, configfs is a filesystem-based manager
1027	  of kernel objects, or config_items.
1028
1029	  Both sysfs and configfs can and should exist together on the
1030	  same system. One is not a replacement for the other.
1031
1032endmenu
1033
1034menu "Miscellaneous filesystems"
1035
1036config ADFS_FS
1037	tristate "ADFS file system support (EXPERIMENTAL)"
1038	depends on BLOCK && EXPERIMENTAL
1039	help
1040	  The Acorn Disc Filing System is the standard file system of the
1041	  RiscOS operating system which runs on Acorn's ARM-based Risc PC
1042	  systems and the Acorn Archimedes range of machines. If you say Y
1043	  here, Linux will be able to read from ADFS partitions on hard drives
1044	  and from ADFS-formatted floppy discs. If you also want to be able to
1045	  write to those devices, say Y to "ADFS write support" below.
1046
1047	  The ADFS partition should be the first partition (i.e.,
1048	  /dev/[hs]d?1) on each of your drives. Please read the file
1049	  <file:Documentation/filesystems/adfs.txt> for further details.
1050
1051	  To compile this code as a module, choose M here: the module will be
1052	  called adfs.
1053
1054	  If unsure, say N.
1055
1056config ADFS_FS_RW
1057	bool "ADFS write support (DANGEROUS)"
1058	depends on ADFS_FS
1059	help
1060	  If you say Y here, you will be able to write to ADFS partitions on
1061	  hard drives and ADFS-formatted floppy disks. This is experimental
1062	  codes, so if you're unsure, say N.
1063
1064config AFFS_FS
1065	tristate "Amiga FFS file system support (EXPERIMENTAL)"
1066	depends on BLOCK && EXPERIMENTAL
1067	help
1068	  The Fast File System (FFS) is the common file system used on hard
1069	  disks by Amiga(tm) systems since AmigaOS Version 1.3 (34.20).  Say Y
1070	  if you want to be able to read and write files from and to an Amiga
1071	  FFS partition on your hard drive.  Amiga floppies however cannot be
1072	  read with this driver due to an incompatibility of the floppy
1073	  controller used in an Amiga and the standard floppy controller in
1074	  PCs and workstations. Read <file:Documentation/filesystems/affs.txt>
1075	  and <file:fs/affs/Changes>.
1076
1077	  With this driver you can also mount disk files used by Bernd
1078	  Schmidt's Un*X Amiga Emulator
1079	  (<http://www.freiburg.linux.de/~uae/>).
1080	  If you want to do this, you will also need to say Y or M to "Loop
1081	  device support", above.
1082
1083	  To compile this file system support as a module, choose M here: the
1084	  module will be called affs.  If unsure, say N.
1085
1086config ECRYPT_FS
1087	tristate "eCrypt filesystem layer support (EXPERIMENTAL)"
1088	depends on EXPERIMENTAL && KEYS && CRYPTO && NET
1089	help
1090	  Encrypted filesystem that operates on the VFS layer.  See
1091	  <file:Documentation/ecryptfs.txt> to learn more about
1092	  eCryptfs.  Userspace components are required and can be
1093	  obtained from <http://ecryptfs.sf.net>.
1094
1095	  To compile this file system support as a module, choose M here: the
1096	  module will be called ecryptfs.
1097
1098config HFS_FS
1099	tristate "Apple Macintosh file system support (EXPERIMENTAL)"
1100	depends on BLOCK && EXPERIMENTAL
1101	select NLS
1102	help
1103	  If you say Y here, you will be able to mount Macintosh-formatted
1104	  floppy disks and hard drive partitions with full read-write access.
1105	  Please read <file:fs/hfs/HFS.txt> to learn about the available mount
1106	  options.
1107
1108	  To compile this file system support as a module, choose M here: the
1109	  module will be called hfs.
1110
1111config HFSPLUS_FS
1112	tristate "Apple Extended HFS file system support"
1113	depends on BLOCK
1114	select NLS
1115	select NLS_UTF8
1116	help
1117	  If you say Y here, you will be able to mount extended format
1118	  Macintosh-formatted hard drive partitions with full read-write access.
1119
1120	  This file system is often called HFS+ and was introduced with
1121	  MacOS 8. It includes all Mac specific filesystem data such as
1122	  data forks and creator codes, but it also has several UNIX
1123	  style features such as file ownership and permissions.
1124
1125config BEFS_FS
1126	tristate "BeOS file system (BeFS) support (read only) (EXPERIMENTAL)"
1127	depends on BLOCK && EXPERIMENTAL
1128	select NLS
1129	help
1130	  The BeOS File System (BeFS) is the native file system of Be, Inc's
1131	  BeOS. Notable features include support for arbitrary attributes
1132	  on files and directories, and database-like indices on selected
1133	  attributes. (Also note that this driver doesn't make those features
1134	  available at this time). It is a 64 bit filesystem, so it supports
1135	  extremely large volumes and files.
1136
1137	  If you use this filesystem, you should also say Y to at least one
1138	  of the NLS (native language support) options below.
1139
1140	  If you don't know what this is about, say N.
1141
1142	  To compile this as a module, choose M here: the module will be
1143	  called befs.
1144
1145config BEFS_DEBUG
1146	bool "Debug BeFS"
1147	depends on BEFS_FS
1148	help
1149	  If you say Y here, you can use the 'debug' mount option to enable
1150	  debugging output from the driver.
1151
1152config BFS_FS
1153	tristate "BFS file system support (EXPERIMENTAL)"
1154	depends on BLOCK && EXPERIMENTAL
1155	help
1156	  Boot File System (BFS) is a file system used under SCO UnixWare to
1157	  allow the bootloader access to the kernel image and other important
1158	  files during the boot process.  It is usually mounted under /stand
1159	  and corresponds to the slice marked as "STAND" in the UnixWare
1160	  partition.  You should say Y if you want to read or write the files
1161	  on your /stand slice from within Linux.  You then also need to say Y
1162	  to "UnixWare slices support", below.  More information about the BFS
1163	  file system is contained in the file
1164	  <file:Documentation/filesystems/bfs.txt>.
1165
1166	  If you don't know what this is about, say N.
1167
1168	  To compile this as a module, choose M here: the module will be called
1169	  bfs.  Note that the file system of your root partition (the one
1170	  containing the directory /) cannot be compiled as a module.
1171
1172
1173
1174config EFS_FS
1175	tristate "EFS file system support (read only) (EXPERIMENTAL)"
1176	depends on BLOCK && EXPERIMENTAL
1177	help
1178	  EFS is an older file system used for non-ISO9660 CD-ROMs and hard
1179	  disk partitions by SGI's IRIX operating system (IRIX 6.0 and newer
1180	  uses the XFS file system for hard disk partitions however).
1181
1182	  This implementation only offers read-only access. If you don't know
1183	  what all this is about, it's safe to say N. For more information
1184	  about EFS see its home page at <http://aeschi.ch.eu.org/efs/>.
1185
1186	  To compile the EFS file system support as a module, choose M here: the
1187	  module will be called efs.
1188
1189config JFFS2_FS
1190	tristate "Journalling Flash File System v2 (JFFS2) support"
1191	select CRC32
1192	depends on MTD
1193	help
1194	  JFFS2 is the second generation of the Journalling Flash File System
1195	  for use on diskless embedded devices. It provides improved wear
1196	  levelling, compression and support for hard links. You cannot use
1197	  this on normal block devices, only on 'MTD' devices.
1198
1199	  Further information on the design and implementation of JFFS2 is
1200	  available at <http://sources.redhat.com/jffs2/>.
1201
1202config JFFS2_FS_DEBUG
1203	int "JFFS2 debugging verbosity (0 = quiet, 2 = noisy)"
1204	depends on JFFS2_FS
1205	default "0"
1206	help
1207	  This controls the amount of debugging messages produced by the JFFS2
1208	  code. Set it to zero for use in production systems. For evaluation,
1209	  testing and debugging, it's advisable to set it to one. This will
1210	  enable a few assertions and will print debugging messages at the
1211	  KERN_DEBUG loglevel, where they won't normally be visible. Level 2
1212	  is unlikely to be useful - it enables extra debugging in certain
1213	  areas which at one point needed debugging, but when the bugs were
1214	  located and fixed, the detailed messages were relegated to level 2.
1215
1216	  If reporting bugs, please try to have available a full dump of the
1217	  messages at debug level 1 while the misbehaviour was occurring.
1218
1219config JFFS2_FS_WRITEBUFFER
1220	bool "JFFS2 write-buffering support"
1221	depends on JFFS2_FS
1222	default y
1223	help
1224	  This enables the write-buffering support in JFFS2.
1225
1226	  This functionality is required to support JFFS2 on the following
1227	  types of flash devices:
1228	    - NAND flash
1229	    - NOR flash with transparent ECC
1230	    - DataFlash
1231
1232config JFFS2_FS_WBUF_VERIFY
1233	bool "Verify JFFS2 write-buffer reads"
1234	depends on JFFS2_FS_WRITEBUFFER
1235	default n
1236	help
1237	  This causes JFFS2 to read back every page written through the
1238	  write-buffer, and check for errors.
1239
1240config JFFS2_SUMMARY
1241	bool "JFFS2 summary support (EXPERIMENTAL)"
1242	depends on JFFS2_FS && EXPERIMENTAL
1243	default n
1244	help
1245	  This feature makes it possible to use summary information
1246	  for faster filesystem mount.
1247
1248	  The summary information can be inserted into a filesystem image
1249	  by the utility 'sumtool'.
1250
1251	  If unsure, say 'N'.
1252
1253config JFFS2_FS_XATTR
1254	bool "JFFS2 XATTR support (EXPERIMENTAL)"
1255	depends on JFFS2_FS && EXPERIMENTAL
1256	default n
1257	help
1258	  Extended attributes are name:value pairs associated with inodes by
1259	  the kernel or by users (see the attr(5) manual page, or visit
1260	  <http://acl.bestbits.at/> for details).
1261
1262	  If unsure, say N.
1263
1264config JFFS2_FS_POSIX_ACL
1265	bool "JFFS2 POSIX Access Control Lists"
1266	depends on JFFS2_FS_XATTR
1267	default y
1268	select FS_POSIX_ACL
1269	help
1270	  Posix Access Control Lists (ACLs) support permissions for users and
1271	  groups beyond the owner/group/world scheme.
1272
1273	  To learn more about Access Control Lists, visit the Posix ACLs for
1274	  Linux website <http://acl.bestbits.at/>.
1275
1276	  If you don't know what Access Control Lists are, say N
1277
1278config JFFS2_FS_SECURITY
1279	bool "JFFS2 Security Labels"
1280	depends on JFFS2_FS_XATTR
1281	default y
1282	help
1283	  Security labels support alternative access control models
1284	  implemented by security modules like SELinux.  This option
1285	  enables an extended attribute handler for file security
1286	  labels in the jffs2 filesystem.
1287
1288	  If you are not using a security module that requires using
1289	  extended attributes for file security labels, say N.
1290
1291config JFFS2_COMPRESSION_OPTIONS
1292	bool "Advanced compression options for JFFS2"
1293	depends on JFFS2_FS
1294	default n
1295	help
1296	  Enabling this option allows you to explicitly choose which
1297	  compression modules, if any, are enabled in JFFS2. Removing
1298	  compressors and mean you cannot read existing file systems,
1299	  and enabling experimental compressors can mean that you
1300	  write a file system which cannot be read by a standard kernel.
1301
1302	  If unsure, you should _definitely_ say 'N'.
1303
1304config JFFS2_ZLIB
1305	bool "JFFS2 ZLIB compression support" if JFFS2_COMPRESSION_OPTIONS
1306	select ZLIB_INFLATE
1307	select ZLIB_DEFLATE
1308	depends on JFFS2_FS
1309	default y
1310	help
1311	  Zlib is designed to be a free, general-purpose, legally unencumbered,
1312	  lossless data-compression library for use on virtually any computer
1313	  hardware and operating system. See <http://www.gzip.org/zlib/> for
1314	  further information.
1315
1316	  Say 'Y' if unsure.
1317
1318config JFFS2_LZO
1319	bool "JFFS2 LZO compression support" if JFFS2_COMPRESSION_OPTIONS
1320	select LZO_COMPRESS
1321	select LZO_DECOMPRESS
1322	depends on JFFS2_FS
1323	default n
1324	help
1325	  minilzo-based compression. Generally works better than Zlib.
1326
1327	  This feature was added in July, 2007. Say 'N' if you need
1328	  compatibility with older bootloaders or kernels.
1329
1330config JFFS2_RTIME
1331	bool "JFFS2 RTIME compression support" if JFFS2_COMPRESSION_OPTIONS
1332	depends on JFFS2_FS
1333	default y
1334	help
1335	  Rtime does manage to recompress already-compressed data. Say 'Y' if unsure.
1336
1337config JFFS2_RUBIN
1338	bool "JFFS2 RUBIN compression support" if JFFS2_COMPRESSION_OPTIONS
1339	depends on JFFS2_FS
1340	default n
1341	help
1342	  RUBINMIPS and DYNRUBIN compressors. Say 'N' if unsure.
1343
1344choice
1345	prompt "JFFS2 default compression mode" if JFFS2_COMPRESSION_OPTIONS
1346	default JFFS2_CMODE_PRIORITY
1347	depends on JFFS2_FS
1348	help
1349	  You can set here the default compression mode of JFFS2 from
1350	  the available compression modes. Don't touch if unsure.
1351
1352config JFFS2_CMODE_NONE
1353	bool "no compression"
1354	help
1355	  Uses no compression.
1356
1357config JFFS2_CMODE_PRIORITY
1358	bool "priority"
1359	help
1360	  Tries the compressors in a predefined order and chooses the first
1361	  successful one.
1362
1363config JFFS2_CMODE_SIZE
1364	bool "size (EXPERIMENTAL)"
1365	help
1366	  Tries all compressors and chooses the one which has the smallest
1367	  result.
1368
1369config JFFS2_CMODE_FAVOURLZO
1370	bool "Favour LZO"
1371	help
1372	  Tries all compressors and chooses the one which has the smallest
1373	  result but gives some preference to LZO (which has faster
1374	  decompression) at the expense of size.
1375
1376endchoice
1377
1378config CRAMFS
1379	tristate "Compressed ROM file system support (cramfs)"
1380	depends on BLOCK
1381	select ZLIB_INFLATE
1382	help
1383	  Saying Y here includes support for CramFs (Compressed ROM File
1384	  System).  CramFs is designed to be a simple, small, and compressed
1385	  file system for ROM based embedded systems.  CramFs is read-only,
1386	  limited to 256MB file systems (with 16MB files), and doesn't support
1387	  16/32 bits uid/gid, hard links and timestamps.
1388
1389	  See <file:Documentation/filesystems/cramfs.txt> and
1390	  <file:fs/cramfs/README> for further information.
1391
1392	  To compile this as a module, choose M here: the module will be called
1393	  cramfs.  Note that the root file system (the one containing the
1394	  directory /) cannot be compiled as a module.
1395
1396	  If unsure, say N.
1397
1398config VXFS_FS
1399	tristate "FreeVxFS file system support (VERITAS VxFS(TM) compatible)"
1400	depends on BLOCK
1401	help
1402	  FreeVxFS is a file system driver that support the VERITAS VxFS(TM)
1403	  file system format.  VERITAS VxFS(TM) is the standard file system
1404	  of SCO UnixWare (and possibly others) and optionally available
1405	  for Sunsoft Solaris, HP-UX and many other operating systems.
1406	  Currently only readonly access is supported.
1407
1408	  NOTE: the file system type as used by mount(1), mount(2) and
1409	  fstab(5) is 'vxfs' as it describes the file system format, not
1410	  the actual driver.
1411
1412	  To compile this as a module, choose M here: the module will be
1413	  called freevxfs.  If unsure, say N.
1414
1415
1416config HPFS_FS
1417	tristate "OS/2 HPFS file system support"
1418	depends on BLOCK
1419	help
1420	  OS/2 is IBM's operating system for PC's, the same as Warp, and HPFS
1421	  is the file system used for organizing files on OS/2 hard disk
1422	  partitions. Say Y if you want to be able to read files from and
1423	  write files to an OS/2 HPFS partition on your hard drive. OS/2
1424	  floppies however are in regular MSDOS format, so you don't need this
1425	  option in order to be able to read them. Read
1426	  <file:Documentation/filesystems/hpfs.txt>.
1427
1428	  To compile this file system support as a module, choose M here: the
1429	  module will be called hpfs.  If unsure, say N.
1430
1431
1432
1433config QNX4FS_FS
1434	tristate "QNX4 file system support (read only)"
1435	depends on BLOCK
1436	help
1437	  This is the file system used by the real-time operating systems
1438	  QNX 4 and QNX 6 (the latter is also called QNX RTP).
1439	  Further information is available at <http://www.qnx.com/>.
1440	  Say Y if you intend to mount QNX hard disks or floppies.
1441	  Unless you say Y to "QNX4FS read-write support" below, you will
1442	  only be able to read these file systems.
1443
1444	  To compile this file system support as a module, choose M here: the
1445	  module will be called qnx4.
1446
1447	  If you don't know whether you need it, then you don't need it:
1448	  answer N.
1449
1450config QNX4FS_RW
1451	bool "QNX4FS write support (DANGEROUS)"
1452	depends on QNX4FS_FS && EXPERIMENTAL && BROKEN
1453	help
1454	  Say Y if you want to test write support for QNX4 file systems.
1455
1456	  It's currently broken, so for now:
1457	  answer N.
1458
1459
1460
1461config SYSV_FS
1462	tristate "System V/Xenix/V7/Coherent file system support"
1463	depends on BLOCK
1464	help
1465	  SCO, Xenix and Coherent are commercial Unix systems for Intel
1466	  machines, and Version 7 was used on the DEC PDP-11. Saying Y
1467	  here would allow you to read from their floppies and hard disk
1468	  partitions.
1469
1470	  If you have floppies or hard disk partitions like that, it is likely
1471	  that they contain binaries from those other Unix systems; in order
1472	  to run these binaries, you will want to install linux-abi which is
1473	  a set of kernel modules that lets you run SCO, Xenix, Wyse,
1474	  UnixWare, Dell Unix and System V programs under Linux.  It is
1475	  available via FTP (user: ftp) from
1476	  <ftp://ftp.openlinux.org/pub/people/hch/linux-abi/>).
1477	  NOTE: that will work only for binaries from Intel-based systems;
1478	  PDP ones will have to wait until somebody ports Linux to -11 ;-)
1479
1480	  If you only intend to mount files from some other Unix over the
1481	  network using NFS, you don't need the System V file system support
1482	  (but you need NFS file system support obviously).
1483
1484	  Note that this option is generally not needed for floppies, since a
1485	  good portable way to transport files and directories between unixes
1486	  (and even other operating systems) is given by the tar program ("man
1487	  tar" or preferably "info tar").  Note also that this option has
1488	  nothing whatsoever to do with the option "System V IPC". Read about
1489	  the System V file system in
1490	  <file:Documentation/filesystems/sysv-fs.txt>.
1491	  Saying Y here will enlarge your kernel by about 27 KB.
1492
1493	  To compile this as a module, choose M here: the module will be called
1494	  sysv.
1495
1496	  If you haven't heard about all of this before, it's safe to say N.
1497
1498
1499
1500config UFS_FS
1501	tristate "UFS file system support (read only)"
1502	depends on BLOCK
1503	help
1504	  BSD and derivate versions of Unix (such as SunOS, FreeBSD, NetBSD,
1505	  OpenBSD and NeXTstep) use a file system called UFS. Some System V
1506	  Unixes can create and mount hard disk partitions and diskettes using
1507	  this file system as well. Saying Y here will allow you to read from
1508	  these partitions; if you also want to write to them, say Y to the
1509	  experimental "UFS file system write support", below. Please read the
1510	  file <file:Documentation/filesystems/ufs.txt> for more information.
1511
1512          The recently released UFS2 variant (used in FreeBSD 5.x) is
1513          READ-ONLY supported.
1514
1515	  If you only intend to mount files from some other Unix over the
1516	  network using NFS, you don't need the UFS file system support (but
1517	  you need NFS file system support obviously).
1518
1519	  Note that this option is generally not needed for floppies, since a
1520	  good portable way to transport files and directories between unixes
1521	  (and even other operating systems) is given by the tar program ("man
1522	  tar" or preferably "info tar").
1523
1524	  When accessing NeXTstep files, you may need to convert them from the
1525	  NeXT character set to the Latin1 character set; use the program
1526	  recode ("info recode") for this purpose.
1527
1528	  To compile the UFS file system support as a module, choose M here: the
1529	  module will be called ufs.
1530
1531	  If you haven't heard about all of this before, it's safe to say N.
1532
1533config UFS_FS_WRITE
1534	bool "UFS file system write support (DANGEROUS)"
1535	depends on UFS_FS && EXPERIMENTAL
1536	help
1537	  Say Y here if you want to try writing to UFS partitions. This is
1538	  experimental, so you should back up your UFS partitions beforehand.
1539
1540config UFS_DEBUG
1541	bool "UFS debugging"
1542	depends on UFS_FS
1543	help
1544	  If you are experiencing any problems with the UFS filesystem, say
1545	  Y here.  This will result in _many_ additional debugging messages to be
1546	  written to the system log.
1547
1548endmenu
1549
1550menu "Network File Systems"
1551	depends on NET
1552
1553config NFS_FS
1554	tristate "NFS file system support"
1555	depends on INET
1556	select LOCKD
1557	select SUNRPC
1558	select NFS_ACL_SUPPORT if NFS_V3_ACL
1559	help
1560	  If you are connected to some other (usually local) Unix computer
1561	  (using SLIP, PLIP, PPP or Ethernet) and want to mount files residing
1562	  on that computer (the NFS server) using the Network File Sharing
1563	  protocol, say Y. "Mounting files" means that the client can access
1564	  the files with usual UNIX commands as if they were sitting on the
1565	  client's hard disk. For this to work, the server must run the
1566	  programs nfsd and mountd (but does not need to have NFS file system
1567	  support enabled in its kernel). NFS is explained in the Network
1568	  Administrator's Guide, available from
1569	  <http://www.tldp.org/docs.html#guide>, on its man page: "man
1570	  nfs", and in the NFS-HOWTO.
1571
1572	  A superior but less widely used alternative to NFS is provided by
1573	  the Coda file system; see "Coda file system support" below.
1574
1575	  If you say Y here, you should have said Y to TCP/IP networking also.
1576	  This option would enlarge your kernel by about 27 KB.
1577
1578	  To compile this file system support as a module, choose M here: the
1579	  module will be called nfs.
1580
1581	  If you are configuring a diskless machine which will mount its root
1582	  file system over NFS at boot time, say Y here and to "Kernel
1583	  level IP autoconfiguration" above and to "Root file system on NFS"
1584	  below. You cannot compile this driver as a module in this case.
1585	  There are two packages designed for booting diskless machines over
1586	  the net: netboot, available from
1587	  <http://ftp1.sourceforge.net/netboot/>, and Etherboot,
1588	  available from <http://ftp1.sourceforge.net/etherboot/>.
1589
1590	  If you don't know what all this is about, say N.
1591
1592config NFS_V3
1593	bool "Provide NFSv3 client support"
1594	depends on NFS_FS
1595	help
1596	  Say Y here if you want your NFS client to be able to speak version
1597	  3 of the NFS protocol.
1598
1599	  If unsure, say Y.
1600
1601config NFS_V3_ACL
1602	bool "Provide client support for the NFSv3 ACL protocol extension"
1603	depends on NFS_V3
1604	help
1605	  Implement the NFSv3 ACL protocol extension for manipulating POSIX
1606	  Access Control Lists.  The server should also be compiled with
1607	  the NFSv3 ACL protocol extension; see the CONFIG_NFSD_V3_ACL option.
1608
1609	  If unsure, say N.
1610
1611config NFS_V4
1612	bool "Provide NFSv4 client support (EXPERIMENTAL)"
1613	depends on NFS_FS && EXPERIMENTAL
1614	select RPCSEC_GSS_KRB5
1615	help
1616	  Say Y here if you want your NFS client to be able to speak the newer
1617	  version 4 of the NFS protocol.
1618
1619	  Note: Requires auxiliary userspace daemons which may be found on
1620		http://www.citi.umich.edu/projects/nfsv4/
1621
1622	  If unsure, say N.
1623
1624config NFS_DIRECTIO
1625	bool "Allow direct I/O on NFS files"
1626	depends on NFS_FS
1627	help
1628	  This option enables applications to perform uncached I/O on files
1629	  in NFS file systems using the O_DIRECT open() flag.  When O_DIRECT
1630	  is set for a file, its data is not cached in the system's page
1631	  cache.  Data is moved to and from user-level application buffers
1632	  directly.  Unlike local disk-based file systems, NFS O_DIRECT has
1633	  no alignment restrictions.
1634
1635	  Unless your program is designed to use O_DIRECT properly, you are
1636	  much better off allowing the NFS client to manage data caching for
1637	  you.  Misusing O_DIRECT can cause poor server performance or network
1638	  storms.  This kernel build option defaults OFF to avoid exposing
1639	  system administrators unwittingly to a potentially hazardous
1640	  feature.
1641
1642	  For more details on NFS O_DIRECT, see fs/nfs/direct.c.
1643
1644	  If unsure, say N.  This reduces the size of the NFS client, and
1645	  causes open() to return EINVAL if a file residing in NFS is
1646	  opened with the O_DIRECT flag.
1647
1648config NFSD
1649	tristate "NFS server support"
1650	depends on INET
1651	select LOCKD
1652	select SUNRPC
1653	select EXPORTFS
1654	select NFSD_V2_ACL if NFSD_V3_ACL
1655	select NFS_ACL_SUPPORT if NFSD_V2_ACL
1656	select NFSD_TCP if NFSD_V4
1657	select CRYPTO_MD5 if NFSD_V4
1658	select CRYPTO if NFSD_V4
1659	select FS_POSIX_ACL if NFSD_V4
1660	help
1661	  If you want your Linux box to act as an NFS *server*, so that other
1662	  computers on your local network which support NFS can access certain
1663	  directories on your box transparently, you have two options: you can
1664	  use the self-contained user space program nfsd, in which case you
1665	  should say N here, or you can say Y and use the kernel based NFS
1666	  server. The advantage of the kernel based solution is that it is
1667	  faster.
1668
1669	  In either case, you will need support software; the respective
1670	  locations are given in the file <file:Documentation/Changes> in the
1671	  NFS section.
1672
1673	  If you say Y here, you will get support for version 2 of the NFS
1674	  protocol (NFSv2). If you also want NFSv3, say Y to the next question
1675	  as well.
1676
1677	  Please read the NFS-HOWTO, available from
1678	  <http://www.tldp.org/docs.html#howto>.
1679
1680	  To compile the NFS server support as a module, choose M here: the
1681	  module will be called nfsd.  If unsure, say N.
1682
1683config NFSD_V2_ACL
1684	bool
1685	depends on NFSD
1686
1687config NFSD_V3
1688	bool "Provide NFSv3 server support"
1689	depends on NFSD
1690	help
1691	  If you would like to include the NFSv3 server as well as the NFSv2
1692	  server, say Y here.  If unsure, say Y.
1693
1694config NFSD_V3_ACL
1695	bool "Provide server support for the NFSv3 ACL protocol extension"
1696	depends on NFSD_V3
1697	help
1698	  Implement the NFSv3 ACL protocol extension for manipulating POSIX
1699	  Access Control Lists on exported file systems. NFS clients should
1700	  be compiled with the NFSv3 ACL protocol extension; see the
1701	  CONFIG_NFS_V3_ACL option.  If unsure, say N.
1702
1703config NFSD_V4
1704	bool "Provide NFSv4 server support (EXPERIMENTAL)"
1705	depends on NFSD && NFSD_V3 && EXPERIMENTAL
1706	select RPCSEC_GSS_KRB5
1707	help
1708	  If you would like to include the NFSv4 server as well as the NFSv2
1709	  and NFSv3 servers, say Y here.  This feature is experimental, and
1710	  should only be used if you are interested in helping to test NFSv4.
1711	  If unsure, say N.
1712
1713config NFSD_TCP
1714	bool "Provide NFS server over TCP support"
1715	depends on NFSD
1716	default y
1717	help
1718	  If you want your NFS server to support TCP connections, say Y here.
1719	  TCP connections usually perform better than the default UDP when
1720	  the network is lossy or congested.  If unsure, say Y.
1721
1722config ROOT_NFS
1723	bool "Root file system on NFS"
1724	depends on NFS_FS=y && IP_PNP
1725	help
1726	  If you want your Linux box to mount its whole root file system (the
1727	  one containing the directory /) from some other computer over the
1728	  net via NFS (presumably because your box doesn't have a hard disk),
1729	  say Y. Read <file:Documentation/nfsroot.txt> for details. It is
1730	  likely that in this case, you also want to say Y to "Kernel level IP
1731	  autoconfiguration" so that your box can discover its network address
1732	  at boot time.
1733
1734	  Most people say N here.
1735
1736config LOCKD
1737	tristate
1738
1739config LOCKD_V4
1740	bool
1741	depends on NFSD_V3 || NFS_V3
1742	default y
1743
1744config EXPORTFS
1745	tristate
1746
1747config NFS_ACL_SUPPORT
1748	tristate
1749	select FS_POSIX_ACL
1750
1751config NFS_COMMON
1752	bool
1753	depends on NFSD || NFS_FS
1754	default y
1755
1756config SUNRPC
1757	tristate
1758
1759config SUNRPC_GSS
1760	tristate
1761
1762config SUNRPC_XPRT_RDMA
1763	tristate "RDMA transport for sunrpc (EXPERIMENTAL)"
1764	depends on SUNRPC && INFINIBAND && EXPERIMENTAL
1765	default m
1766	help
1767	  Adds a client RPC transport for supporting kernel NFS over RDMA
1768	  mounts, including Infiniband and iWARP. Experimental.
1769
1770config SUNRPC_BIND34
1771	bool "Support for rpcbind versions 3 & 4 (EXPERIMENTAL)"
1772	depends on SUNRPC && EXPERIMENTAL
1773	help
1774	  Provides kernel support for querying rpcbind servers via versions 3
1775	  and 4 of the rpcbind protocol.  The kernel automatically falls back
1776	  to version 2 if a remote rpcbind service does not support versions
1777	  3 or 4.
1778
1779	  If unsure, say N to get traditional behavior (version 2 rpcbind
1780	  requests only).
1781
1782config RPCSEC_GSS_KRB5
1783	tristate "Secure RPC: Kerberos V mechanism (EXPERIMENTAL)"
1784	depends on SUNRPC && EXPERIMENTAL
1785	select SUNRPC_GSS
1786	select CRYPTO
1787	select CRYPTO_MD5
1788	select CRYPTO_DES
1789	select CRYPTO_CBC
1790	help
1791	  Provides for secure RPC calls by means of a gss-api
1792	  mechanism based on Kerberos V5. This is required for
1793	  NFSv4.
1794
1795	  Note: Requires an auxiliary userspace daemon which may be found on
1796		http://www.citi.umich.edu/projects/nfsv4/
1797
1798	  If unsure, say N.
1799
1800config RPCSEC_GSS_SPKM3
1801	tristate "Secure RPC: SPKM3 mechanism (EXPERIMENTAL)"
1802	depends on SUNRPC && EXPERIMENTAL
1803	select SUNRPC_GSS
1804	select CRYPTO
1805	select CRYPTO_MD5
1806	select CRYPTO_DES
1807	select CRYPTO_CAST5
1808	select CRYPTO_CBC
1809	help
1810	  Provides for secure RPC calls by means of a gss-api
1811	  mechanism based on the SPKM3 public-key mechanism.
1812
1813	  Note: Requires an auxiliary userspace daemon which may be found on
1814	  	http://www.citi.umich.edu/projects/nfsv4/
1815
1816	  If unsure, say N.
1817
1818config SMB_FS
1819	tristate "SMB file system support (to mount Windows shares etc.)"
1820	depends on INET
1821	select NLS
1822	help
1823	  SMB (Server Message Block) is the protocol Windows for Workgroups
1824	  (WfW), Windows 95/98, Windows NT and OS/2 Lan Manager use to share
1825	  files and printers over local networks.  Saying Y here allows you to
1826	  mount their file systems (often called "shares" in this context) and
1827	  access them just like any other Unix directory.  Currently, this
1828	  works only if the Windows machines use TCP/IP as the underlying
1829	  transport protocol, and not NetBEUI.  For details, read
1830	  <file:Documentation/filesystems/smbfs.txt> and the SMB-HOWTO,
1831	  available from <http://www.tldp.org/docs.html#howto>.
1832
1833	  Note: if you just want your box to act as an SMB *server* and make
1834	  files and printing services available to Windows clients (which need
1835	  to have a TCP/IP stack), you don't need to say Y here; you can use
1836	  the program SAMBA (available from <ftp://ftp.samba.org/pub/samba/>)
1837	  for that.
1838
1839	  General information about how to connect Linux, Windows machines and
1840	  Macs is on the WWW at <http://www.eats.com/linux_mac_win.html>.
1841
1842	  To compile the SMB support as a module, choose M here: the module will
1843	  be called smbfs.  Most people say N, however.
1844
1845config SMB_NLS_DEFAULT
1846	bool "Use a default NLS"
1847	depends on SMB_FS
1848	help
1849	  Enabling this will make smbfs use nls translations by default. You
1850	  need to specify the local charset (CONFIG_NLS_DEFAULT) in the nls
1851	  settings and you need to give the default nls for the SMB server as
1852	  CONFIG_SMB_NLS_REMOTE.
1853
1854	  The nls settings can be changed at mount time, if your smbmount
1855	  supports that, using the codepage and iocharset parameters.
1856
1857	  smbmount from samba 2.2.0 or later supports this.
1858
1859config SMB_NLS_REMOTE
1860	string "Default Remote NLS Option"
1861	depends on SMB_NLS_DEFAULT
1862	default "cp437"
1863	help
1864	  This setting allows you to specify a default value for which
1865	  codepage the server uses. If this field is left blank no
1866	  translations will be done by default. The local codepage/charset
1867	  default to CONFIG_NLS_DEFAULT.
1868
1869	  The nls settings can be changed at mount time, if your smbmount
1870	  supports that, using the codepage and iocharset parameters.
1871
1872	  smbmount from samba 2.2.0 or later supports this.
1873
1874config CIFS
1875	tristate "CIFS support (advanced network filesystem for Samba, Window and other CIFS compliant servers)"
1876	depends on INET
1877	select NLS
1878	help
1879	  This is the client VFS module for the Common Internet File System
1880	  (CIFS) protocol which is the successor to the Server Message Block
1881	  (SMB) protocol, the native file sharing mechanism for most early
1882	  PC operating systems.  The CIFS protocol is fully supported by
1883	  file servers such as Windows 2000 (including Windows 2003, NT 4
1884	  and Windows XP) as well by Samba (which provides excellent CIFS
1885	  server support for Linux and many other operating systems). Limited
1886	  support for OS/2 and Windows ME and similar servers is provided as well.
1887
1888	  The intent of the cifs module is to provide an advanced
1889	  network file system client for mounting to CIFS compliant servers,
1890	  including support for dfs (hierarchical name space), secure per-user
1891	  session establishment, safe distributed caching (oplock), optional
1892	  packet signing, Unicode and other internationalization improvements.
1893	  If you need to mount to Samba or Windows from this machine, say Y.
1894
1895config CIFS_STATS
1896        bool "CIFS statistics"
1897        depends on CIFS
1898        help
1899          Enabling this option will cause statistics for each server share
1900	  mounted by the cifs client to be displayed in /proc/fs/cifs/Stats
1901
1902config CIFS_STATS2
1903	bool "Extended statistics"
1904	depends on CIFS_STATS
1905	help
1906	  Enabling this option will allow more detailed statistics on SMB
1907	  request timing to be displayed in /proc/fs/cifs/DebugData and also
1908	  allow optional logging of slow responses to dmesg (depending on the
1909	  value of /proc/fs/cifs/cifsFYI, see fs/cifs/README for more details).
1910	  These additional statistics may have a minor effect on performance
1911	  and memory utilization.
1912
1913	  Unless you are a developer or are doing network performance analysis
1914	  or tuning, say N.
1915
1916config CIFS_WEAK_PW_HASH
1917	bool "Support legacy servers which use weaker LANMAN security"
1918	depends on CIFS
1919	help
1920	  Modern CIFS servers including Samba and most Windows versions
1921	  (since 1997) support stronger NTLM (and even NTLMv2 and Kerberos)
1922	  security mechanisms. These hash the password more securely
1923	  than the mechanisms used in the older LANMAN version of the
1924          SMB protocol needed to establish sessions with old SMB servers.
1925
1926	  Enabling this option allows the cifs module to mount to older
1927	  LANMAN based servers such as OS/2 and Windows 95, but such
1928	  mounts may be less secure than mounts using NTLM or more recent
1929	  security mechanisms if you are on a public network.  Unless you
1930	  have a need to access old SMB servers (and are on a private
1931	  network) you probably want to say N.  Even if this support
1932	  is enabled in the kernel build, they will not be used
1933	  automatically. At runtime LANMAN mounts are disabled but
1934	  can be set to required (or optional) either in
1935	  /proc/fs/cifs (see fs/cifs/README for more detail) or via an
1936	  option on the mount command. This support is disabled by
1937	  default in order to reduce the possibility of a downgrade
1938	  attack.
1939
1940	  If unsure, say N.
1941
1942config CIFS_XATTR
1943        bool "CIFS extended attributes"
1944        depends on CIFS
1945        help
1946          Extended attributes are name:value pairs associated with inodes by
1947          the kernel or by users (see the attr(5) manual page, or visit
1948          <http://acl.bestbits.at/> for details).  CIFS maps the name of
1949          extended attributes beginning with the user namespace prefix
1950          to SMB/CIFS EAs. EAs are stored on Windows servers without the
1951          user namespace prefix, but their names are seen by Linux cifs clients
1952          prefaced by the user namespace prefix. The system namespace
1953          (used by some filesystems to store ACLs) is not supported at
1954          this time.
1955
1956          If unsure, say N.
1957
1958config CIFS_POSIX
1959        bool "CIFS POSIX Extensions"
1960        depends on CIFS_XATTR
1961        help
1962          Enabling this option will cause the cifs client to attempt to
1963	  negotiate a newer dialect with servers, such as Samba 3.0.5
1964	  or later, that optionally can handle more POSIX like (rather
1965	  than Windows like) file behavior.  It also enables
1966	  support for POSIX ACLs (getfacl and setfacl) to servers
1967	  (such as Samba 3.10 and later) which can negotiate
1968	  CIFS POSIX ACL support.  If unsure, say N.
1969
1970config CIFS_DEBUG2
1971	bool "Enable additional CIFS debugging routines"
1972	depends on CIFS
1973	help
1974	   Enabling this option adds a few more debugging routines
1975	   to the cifs code which slightly increases the size of
1976	   the cifs module and can cause additional logging of debug
1977	   messages in some error paths, slowing performance. This
1978	   option can be turned off unless you are debugging
1979	   cifs problems.  If unsure, say N.
1980
1981config CIFS_EXPERIMENTAL
1982	  bool "CIFS Experimental Features (EXPERIMENTAL)"
1983	  depends on CIFS && EXPERIMENTAL
1984	  help
1985	    Enables cifs features under testing. These features are
1986	    experimental and currently include DFS support and directory
1987	    change notification ie fcntl(F_DNOTIFY), as well as the upcall
1988	    mechanism which will be used for Kerberos session negotiation
1989	    and uid remapping.  Some of these features also may depend on
1990	    setting a value of 1 to the pseudo-file /proc/fs/cifs/Experimental
1991	    (which is disabled by default). See the file fs/cifs/README
1992	    for more details.  If unsure, say N.
1993
1994config CIFS_UPCALL
1995	  bool "Kerberos/SPNEGO advanced session setup (EXPERIMENTAL)"
1996	  depends on CIFS_EXPERIMENTAL
1997	  depends on CONNECTOR
1998	  help
1999	    Enables an upcall mechanism for CIFS which will be used to contact
2000	    userspace helper utilities to provide SPNEGO packaged Kerberos
2001	    tickets which are needed to mount to certain secure servers
2002	    (for which more secure Kerberos authentication is required). If
2003	    unsure, say N.
2004
2005config NCP_FS
2006	tristate "NCP file system support (to mount NetWare volumes)"
2007	depends on IPX!=n || INET
2008	help
2009	  NCP (NetWare Core Protocol) is a protocol that runs over IPX and is
2010	  used by Novell NetWare clients to talk to file servers.  It is to
2011	  IPX what NFS is to TCP/IP, if that helps.  Saying Y here allows you
2012	  to mount NetWare file server volumes and to access them just like
2013	  any other Unix directory.  For details, please read the file
2014	  <file:Documentation/filesystems/ncpfs.txt> in the kernel source and
2015	  the IPX-HOWTO from <http://www.tldp.org/docs.html#howto>.
2016
2017	  You do not have to say Y here if you want your Linux box to act as a
2018	  file *server* for Novell NetWare clients.
2019
2020	  General information about how to connect Linux, Windows machines and
2021	  Macs is on the WWW at <http://www.eats.com/linux_mac_win.html>.
2022
2023	  To compile this as a module, choose M here: the module will be called
2024	  ncpfs.  Say N unless you are connected to a Novell network.
2025
2026source "fs/ncpfs/Kconfig"
2027
2028config CODA_FS
2029	tristate "Coda file system support (advanced network fs)"
2030	depends on INET
2031	help
2032	  Coda is an advanced network file system, similar to NFS in that it
2033	  enables you to mount file systems of a remote server and access them
2034	  with regular Unix commands as if they were sitting on your hard
2035	  disk.  Coda has several advantages over NFS: support for
2036	  disconnected operation (e.g. for laptops), read/write server
2037	  replication, security model for authentication and encryption,
2038	  persistent client caches and write back caching.
2039
2040	  If you say Y here, your Linux box will be able to act as a Coda
2041	  *client*.  You will need user level code as well, both for the
2042	  client and server.  Servers are currently user level, i.e. they need
2043	  no kernel support.  Please read
2044	  <file:Documentation/filesystems/coda.txt> and check out the Coda
2045	  home page <http://www.coda.cs.cmu.edu/>.
2046
2047	  To compile the coda client support as a module, choose M here: the
2048	  module will be called coda.
2049
2050config CODA_FS_OLD_API
2051	bool "Use 96-bit Coda file identifiers"
2052	depends on CODA_FS
2053	help
2054	  A new kernel-userspace API had to be introduced for Coda v6.0
2055	  to support larger 128-bit file identifiers as needed by the
2056	  new realms implementation.
2057
2058	  However this new API is not backward compatible with older
2059	  clients. If you really need to run the old Coda userspace
2060	  cache manager then say Y.
2061
2062	  For most cases you probably want to say N.
2063
2064config AFS_FS
2065	tristate "Andrew File System support (AFS) (EXPERIMENTAL)"
2066	depends on INET && EXPERIMENTAL
2067	select AF_RXRPC
2068	help
2069	  If you say Y here, you will get an experimental Andrew File System
2070	  driver. It currently only supports unsecured read-only AFS access.
2071
2072	  See <file:Documentation/filesystems/afs.txt> for more information.
2073
2074	  If unsure, say N.
2075
2076config AFS_DEBUG
2077	bool "AFS dynamic debugging"
2078	depends on AFS_FS
2079	help
2080	  Say Y here to make runtime controllable debugging messages appear.
2081
2082	  See <file:Documentation/filesystems/afs.txt> for more information.
2083
2084	  If unsure, say N.
2085
2086config 9P_FS
2087	tristate "Plan 9 Resource Sharing Support (9P2000) (Experimental)"
2088	depends on INET && NET_9P && EXPERIMENTAL
2089	help
2090	  If you say Y here, you will get experimental support for
2091	  Plan 9 resource sharing via the 9P2000 protocol.
2092
2093	  See <http://v9fs.sf.net> for more information.
2094
2095	  If unsure, say N.
2096
2097endmenu
2098
2099if BLOCK
2100menu "Partition Types"
2101
2102source "fs/partitions/Kconfig"
2103
2104endmenu
2105endif
2106
2107source "fs/nls/Kconfig"
2108source "fs/dlm/Kconfig"
2109
2110endmenu
2111
2112