xref: /linux/fs/Kconfig (revision 2d6ffcca623a9a16df6cdfbe8250b7a5904a5f5e)
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	select CRC32
240	help
241	  This is a generic journaling layer for block devices that support
242	  both 32-bit and 64-bit block numbers.  It is currently used by
243	  the ext4dev/ext4 filesystem, but it could also be used to add
244	  journal support to other file systems or block devices such
245	  as RAID or LVM.
246
247	  If you are using ext4dev/ext4, you need to say Y here. If you are not
248	  using ext4dev/ext4 then you will probably want to say N.
249
250	  To compile this device as a module, choose M here. The module will be
251	  called jbd2.  If you are compiling ext4dev/ext4 into the kernel,
252	  you cannot compile this code as a module.
253
254config JBD2_DEBUG
255	bool "JBD2 (ext4dev/ext4) debugging support"
256	depends on JBD2 && DEBUG_FS
257	help
258	  If you are using the ext4dev/ext4 journaled file system (or
259	  potentially any other filesystem/device using JBD2), this option
260	  allows you to enable debugging output while the system is running,
261	  in order to help track down any problems you are having.
262	  By default, the debugging output will be turned off.
263
264	  If you select Y here, then you will be able to turn on debugging
265	  with "echo N > /sys/kernel/debug/jbd2/jbd2-debug", where N is a
266	  number between 1 and 5. The higher the number, the more debugging
267	  output is generated.  To turn debugging off again, do
268	  "echo 0 > /sys/kernel/debug/jbd2/jbd2-debug".
269
270config FS_MBCACHE
271# Meta block cache for Extended Attributes (ext2/ext3/ext4)
272	tristate
273	depends on EXT2_FS_XATTR || EXT3_FS_XATTR || EXT4DEV_FS_XATTR
274	default y if EXT2_FS=y || EXT3_FS=y || EXT4DEV_FS=y
275	default m if EXT2_FS=m || EXT3_FS=m || EXT4DEV_FS=m
276
277config REISERFS_FS
278	tristate "Reiserfs support"
279	help
280	  Stores not just filenames but the files themselves in a balanced
281	  tree.  Uses journalling.
282
283	  Balanced trees are more efficient than traditional file system
284	  architectural foundations.
285
286	  In general, ReiserFS is as fast as ext2, but is very efficient with
287	  large directories and small files.  Additional patches are needed
288	  for NFS and quotas, please see <http://www.namesys.com/> for links.
289
290	  It is more easily extended to have features currently found in
291	  database and keyword search systems than block allocation based file
292	  systems are.  The next version will be so extended, and will support
293	  plugins consistent with our motto ``It takes more than a license to
294	  make source code open.''
295
296	  Read <http://www.namesys.com/> to learn more about reiserfs.
297
298	  Sponsored by Threshold Networks, Emusic.com, and Bigstorage.com.
299
300	  If you like it, you can pay us to add new features to it that you
301	  need, buy a support contract, or pay us to port it to another OS.
302
303config REISERFS_CHECK
304	bool "Enable reiserfs debug mode"
305	depends on REISERFS_FS
306	help
307	  If you set this to Y, then ReiserFS will perform every check it can
308	  possibly imagine of its internal consistency throughout its
309	  operation.  It will also go substantially slower.  More than once we
310	  have forgotten that this was on, and then gone despondent over the
311	  latest benchmarks.:-) Use of this option allows our team to go all
312	  out in checking for consistency when debugging without fear of its
313	  effect on end users.  If you are on the verge of sending in a bug
314	  report, say Y and you might get a useful error message.  Almost
315	  everyone should say N.
316
317config REISERFS_PROC_INFO
318	bool "Stats in /proc/fs/reiserfs"
319	depends on REISERFS_FS && PROC_FS
320	help
321	  Create under /proc/fs/reiserfs a hierarchy of files, displaying
322	  various ReiserFS statistics and internal data at the expense of
323	  making your kernel or module slightly larger (+8 KB). This also
324	  increases the amount of kernel memory required for each mount.
325	  Almost everyone but ReiserFS developers and people fine-tuning
326	  reiserfs or tracing problems should say N.
327
328config REISERFS_FS_XATTR
329	bool "ReiserFS extended attributes"
330	depends on REISERFS_FS
331	help
332	  Extended attributes are name:value pairs associated with inodes by
333	  the kernel or by users (see the attr(5) manual page, or visit
334	  <http://acl.bestbits.at/> for details).
335
336	  If unsure, say N.
337
338config REISERFS_FS_POSIX_ACL
339	bool "ReiserFS POSIX Access Control Lists"
340	depends on REISERFS_FS_XATTR
341	select FS_POSIX_ACL
342	help
343	  Posix Access Control Lists (ACLs) support permissions for users and
344	  groups beyond the owner/group/world scheme.
345
346	  To learn more about Access Control Lists, visit the Posix ACLs for
347	  Linux website <http://acl.bestbits.at/>.
348
349	  If you don't know what Access Control Lists are, say N
350
351config REISERFS_FS_SECURITY
352	bool "ReiserFS Security Labels"
353	depends on REISERFS_FS_XATTR
354	help
355	  Security labels support alternative access control models
356	  implemented by security modules like SELinux.  This option
357	  enables an extended attribute handler for file security
358	  labels in the ReiserFS filesystem.
359
360	  If you are not using a security module that requires using
361	  extended attributes for file security labels, say N.
362
363config JFS_FS
364	tristate "JFS filesystem support"
365	select NLS
366	help
367	  This is a port of IBM's Journaled Filesystem .  More information is
368	  available in the file <file:Documentation/filesystems/jfs.txt>.
369
370	  If you do not intend to use the JFS filesystem, say N.
371
372config JFS_POSIX_ACL
373	bool "JFS POSIX Access Control Lists"
374	depends on JFS_FS
375	select FS_POSIX_ACL
376	help
377	  Posix Access Control Lists (ACLs) support permissions for users and
378	  groups beyond the owner/group/world scheme.
379
380	  To learn more about Access Control Lists, visit the Posix ACLs for
381	  Linux website <http://acl.bestbits.at/>.
382
383	  If you don't know what Access Control Lists are, say N
384
385config JFS_SECURITY
386	bool "JFS Security Labels"
387	depends on JFS_FS
388	help
389	  Security labels support alternative access control models
390	  implemented by security modules like SELinux.  This option
391	  enables an extended attribute handler for file security
392	  labels in the jfs filesystem.
393
394	  If you are not using a security module that requires using
395	  extended attributes for file security labels, say N.
396
397config JFS_DEBUG
398	bool "JFS debugging"
399	depends on JFS_FS
400	help
401	  If you are experiencing any problems with the JFS filesystem, say
402	  Y here.  This will result in additional debugging messages to be
403	  written to the system log.  Under normal circumstances, this
404	  results in very little overhead.
405
406config JFS_STATISTICS
407	bool "JFS statistics"
408	depends on JFS_FS
409	help
410	  Enabling this option will cause statistics from the JFS file system
411	  to be made available to the user in the /proc/fs/jfs/ directory.
412
413config FS_POSIX_ACL
414# Posix ACL utility routines (for now, only ext2/ext3/jfs/reiserfs/nfs4)
415#
416# NOTE: you can implement Posix ACLs without these helpers (XFS does).
417# 	Never use this symbol for ifdefs.
418#
419	bool
420	default n
421
422source "fs/xfs/Kconfig"
423source "fs/gfs2/Kconfig"
424
425config OCFS2_FS
426	tristate "OCFS2 file system support"
427	depends on NET && SYSFS
428	select CONFIGFS_FS
429	select JBD
430	select CRC32
431	help
432	  OCFS2 is a general purpose extent based shared disk cluster file
433	  system with many similarities to ext3. It supports 64 bit inode
434	  numbers, and has automatically extending metadata groups which may
435	  also make it attractive for non-clustered use.
436
437	  You'll want to install the ocfs2-tools package in order to at least
438	  get "mount.ocfs2".
439
440	  Project web page:    http://oss.oracle.com/projects/ocfs2
441	  Tools web page:      http://oss.oracle.com/projects/ocfs2-tools
442	  OCFS2 mailing lists: http://oss.oracle.com/projects/ocfs2/mailman/
443
444	  For more information on OCFS2, see the file
445	  <file:Documentation/filesystems/ocfs2.txt>.
446
447config OCFS2_FS_O2CB
448	tristate "O2CB Kernelspace Clustering"
449	depends on OCFS2_FS
450	default y
451	help
452	  OCFS2 includes a simple kernelspace clustering package, the OCFS2
453	  Cluster Base.  It only requires a very small userspace component
454	  to configure it. This comes with the standard ocfs2-tools package.
455	  O2CB is limited to maintaining a cluster for OCFS2 file systems.
456	  It cannot manage any other cluster applications.
457
458	  It is always safe to say Y here, as the clustering method is
459	  run-time selectable.
460
461config OCFS2_FS_USERSPACE_CLUSTER
462	tristate "OCFS2 Userspace Clustering"
463	depends on OCFS2_FS && DLM
464	default y
465	help
466	  This option will allow OCFS2 to use userspace clustering services
467	  in conjunction with the DLM in fs/dlm.  If you are using a
468	  userspace cluster manager, say Y here.
469
470	  It is safe to say Y, as the clustering method is run-time
471	  selectable.
472
473config OCFS2_FS_STATS
474	bool "OCFS2 statistics"
475	depends on OCFS2_FS
476	default y
477	help
478	  This option allows some fs statistics to be captured. Enabling
479	  this option may increase the memory consumption.
480
481config OCFS2_DEBUG_MASKLOG
482	bool "OCFS2 logging support"
483	depends on OCFS2_FS
484	default y
485	help
486	  The ocfs2 filesystem has an extensive logging system.  The system
487	  allows selection of events to log via files in /sys/o2cb/logmask/.
488	  This option will enlarge your kernel, but it allows debugging of
489	  ocfs2 filesystem issues.
490
491config OCFS2_DEBUG_FS
492	bool "OCFS2 expensive checks"
493	depends on OCFS2_FS
494	default n
495	help
496	  This option will enable expensive consistency checks. Enable
497	  this option for debugging only as it is likely to decrease
498	  performance of the filesystem.
499
500endif # BLOCK
501
502config DNOTIFY
503	bool "Dnotify support"
504	default y
505	help
506	  Dnotify is a directory-based per-fd file change notification system
507	  that uses signals to communicate events to user-space.  There exist
508	  superior alternatives, but some applications may still rely on
509	  dnotify.
510
511	  If unsure, say Y.
512
513config INOTIFY
514	bool "Inotify file change notification support"
515	default y
516	---help---
517	  Say Y here to enable inotify support.  Inotify is a file change
518	  notification system and a replacement for dnotify.  Inotify fixes
519	  numerous shortcomings in dnotify and introduces several new features
520	  including multiple file events, one-shot support, and unmount
521	  notification.
522
523	  For more information, see <file:Documentation/filesystems/inotify.txt>
524
525	  If unsure, say Y.
526
527config INOTIFY_USER
528	bool "Inotify support for userspace"
529	depends on INOTIFY
530	default y
531	---help---
532	  Say Y here to enable inotify support for userspace, including the
533	  associated system calls.  Inotify allows monitoring of both files and
534	  directories via a single open fd.  Events are read from the file
535	  descriptor, which is also select()- and poll()-able.
536
537	  For more information, see <file:Documentation/filesystems/inotify.txt>
538
539	  If unsure, say Y.
540
541config QUOTA
542	bool "Quota support"
543	help
544	  If you say Y here, you will be able to set per user limits for disk
545	  usage (also called disk quotas). Currently, it works for the
546	  ext2, ext3, and reiserfs file system. ext3 also supports journalled
547	  quotas for which you don't need to run quotacheck(8) after an unclean
548	  shutdown.
549	  For further details, read the Quota mini-HOWTO, available from
550	  <http://www.tldp.org/docs.html#howto>, or the documentation provided
551	  with the quota tools. Probably the quota support is only useful for
552	  multi user systems. If unsure, say N.
553
554config QUOTA_NETLINK_INTERFACE
555	bool "Report quota messages through netlink interface"
556	depends on QUOTA && NET
557	help
558	  If you say Y here, quota warnings (about exceeding softlimit, reaching
559	  hardlimit, etc.) will be reported through netlink interface. If unsure,
560	  say Y.
561
562config PRINT_QUOTA_WARNING
563	bool "Print quota warnings to console (OBSOLETE)"
564	depends on QUOTA
565	default y
566	help
567	  If you say Y here, quota warnings (about exceeding softlimit, reaching
568	  hardlimit, etc.) will be printed to the process' controlling terminal.
569	  Note that this behavior is currently deprecated and may go away in
570	  future. Please use notification via netlink socket instead.
571
572config QFMT_V1
573	tristate "Old quota format support"
574	depends on QUOTA
575	help
576	  This quota format was (is) used by kernels earlier than 2.4.22. If
577	  you have quota working and you don't want to convert to new quota
578	  format say Y here.
579
580config QFMT_V2
581	tristate "Quota format v2 support"
582	depends on QUOTA
583	help
584	  This quota format allows using quotas with 32-bit UIDs/GIDs. If you
585	  need this functionality say Y here.
586
587config QUOTACTL
588	bool
589	depends on XFS_QUOTA || QUOTA
590	default y
591
592config AUTOFS_FS
593	tristate "Kernel automounter support"
594	help
595	  The automounter is a tool to automatically mount remote file systems
596	  on demand. This implementation is partially kernel-based to reduce
597	  overhead in the already-mounted case; this is unlike the BSD
598	  automounter (amd), which is a pure user space daemon.
599
600	  To use the automounter you need the user-space tools from the autofs
601	  package; you can find the location in <file:Documentation/Changes>.
602	  You also want to answer Y to "NFS file system support", below.
603
604	  If you want to use the newer version of the automounter with more
605	  features, say N here and say Y to "Kernel automounter v4 support",
606	  below.
607
608	  To compile this support as a module, choose M here: the module will be
609	  called autofs.
610
611	  If you are not a part of a fairly large, distributed network, you
612	  probably do not need an automounter, and can say N here.
613
614config AUTOFS4_FS
615	tristate "Kernel automounter version 4 support (also supports v3)"
616	help
617	  The automounter is a tool to automatically mount remote file systems
618	  on demand. This implementation is partially kernel-based to reduce
619	  overhead in the already-mounted case; this is unlike the BSD
620	  automounter (amd), which is a pure user space daemon.
621
622	  To use the automounter you need the user-space tools from
623	  <ftp://ftp.kernel.org/pub/linux/daemons/autofs/v4/>; you also
624	  want to answer Y to "NFS file system support", below.
625
626	  To compile this support as a module, choose M here: the module will be
627	  called autofs4.  You will need to add "alias autofs autofs4" to your
628	  modules configuration file.
629
630	  If you are not a part of a fairly large, distributed network or
631	  don't have a laptop which needs to dynamically reconfigure to the
632	  local network, you probably do not need an automounter, and can say
633	  N here.
634
635config FUSE_FS
636	tristate "Filesystem in Userspace support"
637	help
638	  With FUSE it is possible to implement a fully functional filesystem
639	  in a userspace program.
640
641	  There's also companion library: libfuse.  This library along with
642	  utilities is available from the FUSE homepage:
643	  <http://fuse.sourceforge.net/>
644
645	  See <file:Documentation/filesystems/fuse.txt> for more information.
646	  See <file:Documentation/Changes> for needed library/utility version.
647
648	  If you want to develop a userspace FS, or if you want to use
649	  a filesystem based on FUSE, answer Y or M.
650
651config GENERIC_ACL
652	bool
653	select FS_POSIX_ACL
654
655if BLOCK
656menu "CD-ROM/DVD Filesystems"
657
658config ISO9660_FS
659	tristate "ISO 9660 CDROM file system support"
660	help
661	  This is the standard file system used on CD-ROMs.  It was previously
662	  known as "High Sierra File System" and is called "hsfs" on other
663	  Unix systems.  The so-called Rock-Ridge extensions which allow for
664	  long Unix filenames and symbolic links are also supported by this
665	  driver.  If you have a CD-ROM drive and want to do more with it than
666	  just listen to audio CDs and watch its LEDs, say Y (and read
667	  <file:Documentation/filesystems/isofs.txt> and the CD-ROM-HOWTO,
668	  available from <http://www.tldp.org/docs.html#howto>), thereby
669	  enlarging your kernel by about 27 KB; otherwise say N.
670
671	  To compile this file system support as a module, choose M here: the
672	  module will be called isofs.
673
674config JOLIET
675	bool "Microsoft Joliet CDROM extensions"
676	depends on ISO9660_FS
677	select NLS
678	help
679	  Joliet is a Microsoft extension for the ISO 9660 CD-ROM file system
680	  which allows for long filenames in unicode format (unicode is the
681	  new 16 bit character code, successor to ASCII, which encodes the
682	  characters of almost all languages of the world; see
683	  <http://www.unicode.org/> for more information).  Say Y here if you
684	  want to be able to read Joliet CD-ROMs under Linux.
685
686config ZISOFS
687	bool "Transparent decompression extension"
688	depends on ISO9660_FS
689	select ZLIB_INFLATE
690	help
691	  This is a Linux-specific extension to RockRidge which lets you store
692	  data in compressed form on a CD-ROM and have it transparently
693	  decompressed when the CD-ROM is accessed.  See
694	  <http://www.kernel.org/pub/linux/utils/fs/zisofs/> for the tools
695	  necessary to create such a filesystem.  Say Y here if you want to be
696	  able to read such compressed CD-ROMs.
697
698config UDF_FS
699	tristate "UDF file system support"
700	select CRC_ITU_T
701	help
702	  This is the new file system used on some CD-ROMs and DVDs. Say Y if
703	  you intend to mount DVD discs or CDRW's written in packet mode, or
704	  if written to by other UDF utilities, such as DirectCD.
705	  Please read <file:Documentation/filesystems/udf.txt>.
706
707	  To compile this file system support as a module, choose M here: the
708	  module will be called udf.
709
710	  If unsure, say N.
711
712config UDF_NLS
713	bool
714	default y
715	depends on (UDF_FS=m && NLS) || (UDF_FS=y && NLS=y)
716
717endmenu
718endif # BLOCK
719
720if BLOCK
721menu "DOS/FAT/NT Filesystems"
722
723config FAT_FS
724	tristate
725	select NLS
726	help
727	  If you want to use one of the FAT-based file systems (the MS-DOS and
728	  VFAT (Windows 95) file systems), then you must say Y or M here
729	  to include FAT support. You will then be able to mount partitions or
730	  diskettes with FAT-based file systems and transparently access the
731	  files on them, i.e. MSDOS files will look and behave just like all
732	  other Unix files.
733
734	  This FAT support is not a file system in itself, it only provides
735	  the foundation for the other file systems. You will have to say Y or
736	  M to at least one of "MSDOS fs support" or "VFAT fs support" in
737	  order to make use of it.
738
739	  Another way to read and write MSDOS floppies and hard drive
740	  partitions from within Linux (but not transparently) is with the
741	  mtools ("man mtools") program suite. You don't need to say Y here in
742	  order to do that.
743
744	  If you need to move large files on floppies between a DOS and a
745	  Linux box, say Y here, mount the floppy under Linux with an MSDOS
746	  file system and use GNU tar's M option. GNU tar is a program
747	  available for Unix and DOS ("man tar" or "info tar").
748
749	  The FAT support will enlarge your kernel by about 37 KB. If unsure,
750	  say Y.
751
752	  To compile this as a module, choose M here: the module will be called
753	  fat.  Note that if you compile the FAT support as a module, you
754	  cannot compile any of the FAT-based file systems into the kernel
755	  -- they will have to be modules as well.
756
757config MSDOS_FS
758	tristate "MSDOS fs support"
759	select FAT_FS
760	help
761	  This allows you to mount MSDOS partitions of your hard drive (unless
762	  they are compressed; to access compressed MSDOS partitions under
763	  Linux, you can either use the DOS emulator DOSEMU, described in the
764	  DOSEMU-HOWTO, available from
765	  <http://www.tldp.org/docs.html#howto>, or try dmsdosfs in
766	  <ftp://ibiblio.org/pub/Linux/system/filesystems/dosfs/>. If you
767	  intend to use dosemu with a non-compressed MSDOS partition, say Y
768	  here) and MSDOS floppies. This means that file access becomes
769	  transparent, i.e. the MSDOS files look and behave just like all
770	  other Unix files.
771
772	  If you have Windows 95 or Windows NT installed on your MSDOS
773	  partitions, you should use the VFAT file system (say Y to "VFAT fs
774	  support" below), or you will not be able to see the long filenames
775	  generated by Windows 95 / Windows NT.
776
777	  This option will enlarge your kernel by about 7 KB. If unsure,
778	  answer Y. This will only work if you said Y to "DOS FAT fs support"
779	  as well. To compile this as a module, choose M here: the module will
780	  be called msdos.
781
782config VFAT_FS
783	tristate "VFAT (Windows-95) fs support"
784	select FAT_FS
785	help
786	  This option provides support for normal Windows file systems with
787	  long filenames.  That includes non-compressed FAT-based file systems
788	  used by Windows 95, Windows 98, Windows NT 4.0, and the Unix
789	  programs from the mtools package.
790
791	  The VFAT support enlarges your kernel by about 10 KB and it only
792	  works if you said Y to the "DOS FAT fs support" above.  Please read
793	  the file <file:Documentation/filesystems/vfat.txt> for details.  If
794	  unsure, say Y.
795
796	  To compile this as a module, choose M here: the module will be called
797	  vfat.
798
799config FAT_DEFAULT_CODEPAGE
800	int "Default codepage for FAT"
801	depends on MSDOS_FS || VFAT_FS
802	default 437
803	help
804	  This option should be set to the codepage of your FAT filesystems.
805	  It can be overridden with the "codepage" mount option.
806	  See <file:Documentation/filesystems/vfat.txt> for more information.
807
808config FAT_DEFAULT_IOCHARSET
809	string "Default iocharset for FAT"
810	depends on VFAT_FS
811	default "iso8859-1"
812	help
813	  Set this to the default input/output character set you'd
814	  like FAT to use. It should probably match the character set
815	  that most of your FAT filesystems use, and can be overridden
816	  with the "iocharset" mount option for FAT filesystems.
817	  Note that "utf8" is not recommended for FAT filesystems.
818	  If unsure, you shouldn't set "utf8" here.
819	  See <file:Documentation/filesystems/vfat.txt> for more information.
820
821config NTFS_FS
822	tristate "NTFS file system support"
823	select NLS
824	help
825	  NTFS is the file system of Microsoft Windows NT, 2000, XP and 2003.
826
827	  Saying Y or M here enables read support.  There is partial, but
828	  safe, write support available.  For write support you must also
829	  say Y to "NTFS write support" below.
830
831	  There are also a number of user-space tools available, called
832	  ntfsprogs.  These include ntfsundelete and ntfsresize, that work
833	  without NTFS support enabled in the kernel.
834
835	  This is a rewrite from scratch of Linux NTFS support and replaced
836	  the old NTFS code starting with Linux 2.5.11.  A backport to
837	  the Linux 2.4 kernel series is separately available as a patch
838	  from the project web site.
839
840	  For more information see <file:Documentation/filesystems/ntfs.txt>
841	  and <http://www.linux-ntfs.org/>.
842
843	  To compile this file system support as a module, choose M here: the
844	  module will be called ntfs.
845
846	  If you are not using Windows NT, 2000, XP or 2003 in addition to
847	  Linux on your computer it is safe to say N.
848
849config NTFS_DEBUG
850	bool "NTFS debugging support"
851	depends on NTFS_FS
852	help
853	  If you are experiencing any problems with the NTFS file system, say
854	  Y here.  This will result in additional consistency checks to be
855	  performed by the driver as well as additional debugging messages to
856	  be written to the system log.  Note that debugging messages are
857	  disabled by default.  To enable them, supply the option debug_msgs=1
858	  at the kernel command line when booting the kernel or as an option
859	  to insmod when loading the ntfs module.  Once the driver is active,
860	  you can enable debugging messages by doing (as root):
861	  echo 1 > /proc/sys/fs/ntfs-debug
862	  Replacing the "1" with "0" would disable debug messages.
863
864	  If you leave debugging messages disabled, this results in little
865	  overhead, but enabling debug messages results in very significant
866	  slowdown of the system.
867
868	  When reporting bugs, please try to have available a full dump of
869	  debugging messages while the misbehaviour was occurring.
870
871config NTFS_RW
872	bool "NTFS write support"
873	depends on NTFS_FS
874	help
875	  This enables the partial, but safe, write support in the NTFS driver.
876
877	  The only supported operation is overwriting existing files, without
878	  changing the file length.  No file or directory creation, deletion or
879	  renaming is possible.  Note only non-resident files can be written to
880	  so you may find that some very small files (<500 bytes or so) cannot
881	  be written to.
882
883	  While we cannot guarantee that it will not damage any data, we have
884	  so far not received a single report where the driver would have
885	  damaged someones data so we assume it is perfectly safe to use.
886
887	  Note:  While write support is safe in this version (a rewrite from
888	  scratch of the NTFS support), it should be noted that the old NTFS
889	  write support, included in Linux 2.5.10 and before (since 1997),
890	  is not safe.
891
892	  This is currently useful with TopologiLinux.  TopologiLinux is run
893	  on top of any DOS/Microsoft Windows system without partitioning your
894	  hard disk.  Unlike other Linux distributions TopologiLinux does not
895	  need its own partition.  For more information see
896	  <http://topologi-linux.sourceforge.net/>
897
898	  It is perfectly safe to say N here.
899
900endmenu
901endif # BLOCK
902
903menu "Pseudo filesystems"
904
905config PROC_FS
906	bool "/proc file system support" if EMBEDDED
907	default y
908	help
909	  This is a virtual file system providing information about the status
910	  of the system. "Virtual" means that it doesn't take up any space on
911	  your hard disk: the files are created on the fly by the kernel when
912	  you try to access them. Also, you cannot read the files with older
913	  version of the program less: you need to use more or cat.
914
915	  It's totally cool; for example, "cat /proc/interrupts" gives
916	  information about what the different IRQs are used for at the moment
917	  (there is a small number of Interrupt ReQuest lines in your computer
918	  that are used by the attached devices to gain the CPU's attention --
919	  often a source of trouble if two devices are mistakenly configured
920	  to use the same IRQ). The program procinfo to display some
921	  information about your system gathered from the /proc file system.
922
923	  Before you can use the /proc file system, it has to be mounted,
924	  meaning it has to be given a location in the directory hierarchy.
925	  That location should be /proc. A command such as "mount -t proc proc
926	  /proc" or the equivalent line in /etc/fstab does the job.
927
928	  The /proc file system is explained in the file
929	  <file:Documentation/filesystems/proc.txt> and on the proc(5) manpage
930	  ("man 5 proc").
931
932	  This option will enlarge your kernel by about 67 KB. Several
933	  programs depend on this, so everyone should say Y here.
934
935config PROC_KCORE
936	bool "/proc/kcore support" if !ARM
937	depends on PROC_FS && MMU
938
939config PROC_VMCORE
940        bool "/proc/vmcore support (EXPERIMENTAL)"
941        depends on PROC_FS && CRASH_DUMP
942	default y
943        help
944        Exports the dump image of crashed kernel in ELF format.
945
946config PROC_SYSCTL
947	bool "Sysctl support (/proc/sys)" if EMBEDDED
948	depends on PROC_FS
949	select SYSCTL
950	default y
951	---help---
952	  The sysctl interface provides a means of dynamically changing
953	  certain kernel parameters and variables on the fly without requiring
954	  a recompile of the kernel or reboot of the system.  The primary
955	  interface is through /proc/sys.  If you say Y here a tree of
956	  modifiable sysctl entries will be generated beneath the
957          /proc/sys directory. They are explained in the files
958	  in <file:Documentation/sysctl/>.  Note that enabling this
959	  option will enlarge the kernel by at least 8 KB.
960
961	  As it is generally a good thing, you should say Y here unless
962	  building a kernel for install/rescue disks or your system is very
963	  limited in memory.
964
965config SYSFS
966	bool "sysfs file system support" if EMBEDDED
967	default y
968	help
969	The sysfs filesystem is a virtual filesystem that the kernel uses to
970	export internal kernel objects, their attributes, and their
971	relationships to one another.
972
973	Users can use sysfs to ascertain useful information about the running
974	kernel, such as the devices the kernel has discovered on each bus and
975	which driver each is bound to. sysfs can also be used to tune devices
976	and other kernel subsystems.
977
978	Some system agents rely on the information in sysfs to operate.
979	/sbin/hotplug uses device and object attributes in sysfs to assist in
980	delegating policy decisions, like persistently naming devices.
981
982	sysfs is currently used by the block subsystem to mount the root
983	partition.  If sysfs is disabled you must specify the boot device on
984	the kernel boot command line via its major and minor numbers.  For
985	example, "root=03:01" for /dev/hda1.
986
987	Designers of embedded systems may wish to say N here to conserve space.
988
989config TMPFS
990	bool "Virtual memory file system support (former shm fs)"
991	help
992	  Tmpfs is a file system which keeps all files in virtual memory.
993
994	  Everything in tmpfs is temporary in the sense that no files will be
995	  created on your hard drive. The files live in memory and swap
996	  space. If you unmount a tmpfs instance, everything stored therein is
997	  lost.
998
999	  See <file:Documentation/filesystems/tmpfs.txt> for details.
1000
1001config TMPFS_POSIX_ACL
1002	bool "Tmpfs POSIX Access Control Lists"
1003	depends on TMPFS
1004	select GENERIC_ACL
1005	help
1006	  POSIX Access Control Lists (ACLs) support permissions for users and
1007	  groups beyond the owner/group/world scheme.
1008
1009	  To learn more about Access Control Lists, visit the POSIX ACLs for
1010	  Linux website <http://acl.bestbits.at/>.
1011
1012	  If you don't know what Access Control Lists are, say N.
1013
1014config HUGETLBFS
1015	bool "HugeTLB file system support"
1016	depends on X86 || IA64 || PPC64 || SPARC64 || (SUPERH && MMU) || \
1017		   (S390 && 64BIT) || BROKEN
1018	help
1019	  hugetlbfs is a filesystem backing for HugeTLB pages, based on
1020	  ramfs. For architectures that support it, say Y here and read
1021	  <file:Documentation/vm/hugetlbpage.txt> for details.
1022
1023	  If unsure, say N.
1024
1025config HUGETLB_PAGE
1026	def_bool HUGETLBFS
1027
1028config CONFIGFS_FS
1029	tristate "Userspace-driven configuration filesystem"
1030	depends on SYSFS
1031	help
1032	  configfs is a ram-based filesystem that provides the converse
1033	  of sysfs's functionality. Where sysfs is a filesystem-based
1034	  view of kernel objects, configfs is a filesystem-based manager
1035	  of kernel objects, or config_items.
1036
1037	  Both sysfs and configfs can and should exist together on the
1038	  same system. One is not a replacement for the other.
1039
1040endmenu
1041
1042menu "Miscellaneous filesystems"
1043
1044config ADFS_FS
1045	tristate "ADFS file system support (EXPERIMENTAL)"
1046	depends on BLOCK && EXPERIMENTAL
1047	help
1048	  The Acorn Disc Filing System is the standard file system of the
1049	  RiscOS operating system which runs on Acorn's ARM-based Risc PC
1050	  systems and the Acorn Archimedes range of machines. If you say Y
1051	  here, Linux will be able to read from ADFS partitions on hard drives
1052	  and from ADFS-formatted floppy discs. If you also want to be able to
1053	  write to those devices, say Y to "ADFS write support" below.
1054
1055	  The ADFS partition should be the first partition (i.e.,
1056	  /dev/[hs]d?1) on each of your drives. Please read the file
1057	  <file:Documentation/filesystems/adfs.txt> for further details.
1058
1059	  To compile this code as a module, choose M here: the module will be
1060	  called adfs.
1061
1062	  If unsure, say N.
1063
1064config ADFS_FS_RW
1065	bool "ADFS write support (DANGEROUS)"
1066	depends on ADFS_FS
1067	help
1068	  If you say Y here, you will be able to write to ADFS partitions on
1069	  hard drives and ADFS-formatted floppy disks. This is experimental
1070	  codes, so if you're unsure, say N.
1071
1072config AFFS_FS
1073	tristate "Amiga FFS file system support (EXPERIMENTAL)"
1074	depends on BLOCK && EXPERIMENTAL
1075	help
1076	  The Fast File System (FFS) is the common file system used on hard
1077	  disks by Amiga(tm) systems since AmigaOS Version 1.3 (34.20).  Say Y
1078	  if you want to be able to read and write files from and to an Amiga
1079	  FFS partition on your hard drive.  Amiga floppies however cannot be
1080	  read with this driver due to an incompatibility of the floppy
1081	  controller used in an Amiga and the standard floppy controller in
1082	  PCs and workstations. Read <file:Documentation/filesystems/affs.txt>
1083	  and <file:fs/affs/Changes>.
1084
1085	  With this driver you can also mount disk files used by Bernd
1086	  Schmidt's Un*X Amiga Emulator
1087	  (<http://www.freiburg.linux.de/~uae/>).
1088	  If you want to do this, you will also need to say Y or M to "Loop
1089	  device support", above.
1090
1091	  To compile this file system support as a module, choose M here: the
1092	  module will be called affs.  If unsure, say N.
1093
1094config ECRYPT_FS
1095	tristate "eCrypt filesystem layer support (EXPERIMENTAL)"
1096	depends on EXPERIMENTAL && KEYS && CRYPTO && NET
1097	help
1098	  Encrypted filesystem that operates on the VFS layer.  See
1099	  <file:Documentation/filesystems/ecryptfs.txt> to learn more about
1100	  eCryptfs.  Userspace components are required and can be
1101	  obtained from <http://ecryptfs.sf.net>.
1102
1103	  To compile this file system support as a module, choose M here: the
1104	  module will be called ecryptfs.
1105
1106config HFS_FS
1107	tristate "Apple Macintosh file system support (EXPERIMENTAL)"
1108	depends on BLOCK && EXPERIMENTAL
1109	select NLS
1110	help
1111	  If you say Y here, you will be able to mount Macintosh-formatted
1112	  floppy disks and hard drive partitions with full read-write access.
1113	  Please read <file:Documentation/filesystems/hfs.txt> to learn about
1114	  the available mount options.
1115
1116	  To compile this file system support as a module, choose M here: the
1117	  module will be called hfs.
1118
1119config HFSPLUS_FS
1120	tristate "Apple Extended HFS file system support"
1121	depends on BLOCK
1122	select NLS
1123	select NLS_UTF8
1124	help
1125	  If you say Y here, you will be able to mount extended format
1126	  Macintosh-formatted hard drive partitions with full read-write access.
1127
1128	  This file system is often called HFS+ and was introduced with
1129	  MacOS 8. It includes all Mac specific filesystem data such as
1130	  data forks and creator codes, but it also has several UNIX
1131	  style features such as file ownership and permissions.
1132
1133config BEFS_FS
1134	tristate "BeOS file system (BeFS) support (read only) (EXPERIMENTAL)"
1135	depends on BLOCK && EXPERIMENTAL
1136	select NLS
1137	help
1138	  The BeOS File System (BeFS) is the native file system of Be, Inc's
1139	  BeOS. Notable features include support for arbitrary attributes
1140	  on files and directories, and database-like indices on selected
1141	  attributes. (Also note that this driver doesn't make those features
1142	  available at this time). It is a 64 bit filesystem, so it supports
1143	  extremely large volumes and files.
1144
1145	  If you use this filesystem, you should also say Y to at least one
1146	  of the NLS (native language support) options below.
1147
1148	  If you don't know what this is about, say N.
1149
1150	  To compile this as a module, choose M here: the module will be
1151	  called befs.
1152
1153config BEFS_DEBUG
1154	bool "Debug BeFS"
1155	depends on BEFS_FS
1156	help
1157	  If you say Y here, you can use the 'debug' mount option to enable
1158	  debugging output from the driver.
1159
1160config BFS_FS
1161	tristate "BFS file system support (EXPERIMENTAL)"
1162	depends on BLOCK && EXPERIMENTAL
1163	help
1164	  Boot File System (BFS) is a file system used under SCO UnixWare to
1165	  allow the bootloader access to the kernel image and other important
1166	  files during the boot process.  It is usually mounted under /stand
1167	  and corresponds to the slice marked as "STAND" in the UnixWare
1168	  partition.  You should say Y if you want to read or write the files
1169	  on your /stand slice from within Linux.  You then also need to say Y
1170	  to "UnixWare slices support", below.  More information about the BFS
1171	  file system is contained in the file
1172	  <file:Documentation/filesystems/bfs.txt>.
1173
1174	  If you don't know what this is about, say N.
1175
1176	  To compile this as a module, choose M here: the module will be called
1177	  bfs.  Note that the file system of your root partition (the one
1178	  containing the directory /) cannot be compiled as a module.
1179
1180
1181
1182config EFS_FS
1183	tristate "EFS file system support (read only) (EXPERIMENTAL)"
1184	depends on BLOCK && EXPERIMENTAL
1185	help
1186	  EFS is an older file system used for non-ISO9660 CD-ROMs and hard
1187	  disk partitions by SGI's IRIX operating system (IRIX 6.0 and newer
1188	  uses the XFS file system for hard disk partitions however).
1189
1190	  This implementation only offers read-only access. If you don't know
1191	  what all this is about, it's safe to say N. For more information
1192	  about EFS see its home page at <http://aeschi.ch.eu.org/efs/>.
1193
1194	  To compile the EFS file system support as a module, choose M here: the
1195	  module will be called efs.
1196
1197config JFFS2_FS
1198	tristate "Journalling Flash File System v2 (JFFS2) support"
1199	select CRC32
1200	depends on MTD
1201	help
1202	  JFFS2 is the second generation of the Journalling Flash File System
1203	  for use on diskless embedded devices. It provides improved wear
1204	  levelling, compression and support for hard links. You cannot use
1205	  this on normal block devices, only on 'MTD' devices.
1206
1207	  Further information on the design and implementation of JFFS2 is
1208	  available at <http://sources.redhat.com/jffs2/>.
1209
1210config JFFS2_FS_DEBUG
1211	int "JFFS2 debugging verbosity (0 = quiet, 2 = noisy)"
1212	depends on JFFS2_FS
1213	default "0"
1214	help
1215	  This controls the amount of debugging messages produced by the JFFS2
1216	  code. Set it to zero for use in production systems. For evaluation,
1217	  testing and debugging, it's advisable to set it to one. This will
1218	  enable a few assertions and will print debugging messages at the
1219	  KERN_DEBUG loglevel, where they won't normally be visible. Level 2
1220	  is unlikely to be useful - it enables extra debugging in certain
1221	  areas which at one point needed debugging, but when the bugs were
1222	  located and fixed, the detailed messages were relegated to level 2.
1223
1224	  If reporting bugs, please try to have available a full dump of the
1225	  messages at debug level 1 while the misbehaviour was occurring.
1226
1227config JFFS2_FS_WRITEBUFFER
1228	bool "JFFS2 write-buffering support"
1229	depends on JFFS2_FS
1230	default y
1231	help
1232	  This enables the write-buffering support in JFFS2.
1233
1234	  This functionality is required to support JFFS2 on the following
1235	  types of flash devices:
1236	    - NAND flash
1237	    - NOR flash with transparent ECC
1238	    - DataFlash
1239
1240config JFFS2_FS_WBUF_VERIFY
1241	bool "Verify JFFS2 write-buffer reads"
1242	depends on JFFS2_FS_WRITEBUFFER
1243	default n
1244	help
1245	  This causes JFFS2 to read back every page written through the
1246	  write-buffer, and check for errors.
1247
1248config JFFS2_SUMMARY
1249	bool "JFFS2 summary support (EXPERIMENTAL)"
1250	depends on JFFS2_FS && EXPERIMENTAL
1251	default n
1252	help
1253	  This feature makes it possible to use summary information
1254	  for faster filesystem mount.
1255
1256	  The summary information can be inserted into a filesystem image
1257	  by the utility 'sumtool'.
1258
1259	  If unsure, say 'N'.
1260
1261config JFFS2_FS_XATTR
1262	bool "JFFS2 XATTR support (EXPERIMENTAL)"
1263	depends on JFFS2_FS && EXPERIMENTAL
1264	default n
1265	help
1266	  Extended attributes are name:value pairs associated with inodes by
1267	  the kernel or by users (see the attr(5) manual page, or visit
1268	  <http://acl.bestbits.at/> for details).
1269
1270	  If unsure, say N.
1271
1272config JFFS2_FS_POSIX_ACL
1273	bool "JFFS2 POSIX Access Control Lists"
1274	depends on JFFS2_FS_XATTR
1275	default y
1276	select FS_POSIX_ACL
1277	help
1278	  Posix Access Control Lists (ACLs) support permissions for users and
1279	  groups beyond the owner/group/world scheme.
1280
1281	  To learn more about Access Control Lists, visit the Posix ACLs for
1282	  Linux website <http://acl.bestbits.at/>.
1283
1284	  If you don't know what Access Control Lists are, say N
1285
1286config JFFS2_FS_SECURITY
1287	bool "JFFS2 Security Labels"
1288	depends on JFFS2_FS_XATTR
1289	default y
1290	help
1291	  Security labels support alternative access control models
1292	  implemented by security modules like SELinux.  This option
1293	  enables an extended attribute handler for file security
1294	  labels in the jffs2 filesystem.
1295
1296	  If you are not using a security module that requires using
1297	  extended attributes for file security labels, say N.
1298
1299config JFFS2_COMPRESSION_OPTIONS
1300	bool "Advanced compression options for JFFS2"
1301	depends on JFFS2_FS
1302	default n
1303	help
1304	  Enabling this option allows you to explicitly choose which
1305	  compression modules, if any, are enabled in JFFS2. Removing
1306	  compressors can mean you cannot read existing file systems,
1307	  and enabling experimental compressors can mean that you
1308	  write a file system which cannot be read by a standard kernel.
1309
1310	  If unsure, you should _definitely_ say 'N'.
1311
1312config JFFS2_ZLIB
1313	bool "JFFS2 ZLIB compression support" if JFFS2_COMPRESSION_OPTIONS
1314	select ZLIB_INFLATE
1315	select ZLIB_DEFLATE
1316	depends on JFFS2_FS
1317	default y
1318	help
1319	  Zlib is designed to be a free, general-purpose, legally unencumbered,
1320	  lossless data-compression library for use on virtually any computer
1321	  hardware and operating system. See <http://www.gzip.org/zlib/> for
1322	  further information.
1323
1324	  Say 'Y' if unsure.
1325
1326config JFFS2_LZO
1327	bool "JFFS2 LZO compression support" if JFFS2_COMPRESSION_OPTIONS
1328	select LZO_COMPRESS
1329	select LZO_DECOMPRESS
1330	depends on JFFS2_FS
1331	default n
1332	help
1333	  minilzo-based compression. Generally works better than Zlib.
1334
1335	  This feature was added in July, 2007. Say 'N' if you need
1336	  compatibility with older bootloaders or kernels.
1337
1338config JFFS2_RTIME
1339	bool "JFFS2 RTIME compression support" if JFFS2_COMPRESSION_OPTIONS
1340	depends on JFFS2_FS
1341	default y
1342	help
1343	  Rtime does manage to recompress already-compressed data. Say 'Y' if unsure.
1344
1345config JFFS2_RUBIN
1346	bool "JFFS2 RUBIN compression support" if JFFS2_COMPRESSION_OPTIONS
1347	depends on JFFS2_FS
1348	default n
1349	help
1350	  RUBINMIPS and DYNRUBIN compressors. Say 'N' if unsure.
1351
1352choice
1353	prompt "JFFS2 default compression mode" if JFFS2_COMPRESSION_OPTIONS
1354	default JFFS2_CMODE_PRIORITY
1355	depends on JFFS2_FS
1356	help
1357	  You can set here the default compression mode of JFFS2 from
1358	  the available compression modes. Don't touch if unsure.
1359
1360config JFFS2_CMODE_NONE
1361	bool "no compression"
1362	help
1363	  Uses no compression.
1364
1365config JFFS2_CMODE_PRIORITY
1366	bool "priority"
1367	help
1368	  Tries the compressors in a predefined order and chooses the first
1369	  successful one.
1370
1371config JFFS2_CMODE_SIZE
1372	bool "size (EXPERIMENTAL)"
1373	help
1374	  Tries all compressors and chooses the one which has the smallest
1375	  result.
1376
1377config JFFS2_CMODE_FAVOURLZO
1378	bool "Favour LZO"
1379	help
1380	  Tries all compressors and chooses the one which has the smallest
1381	  result but gives some preference to LZO (which has faster
1382	  decompression) at the expense of size.
1383
1384endchoice
1385
1386# UBIFS File system configuration
1387source "fs/ubifs/Kconfig"
1388
1389config CRAMFS
1390	tristate "Compressed ROM file system support (cramfs)"
1391	depends on BLOCK
1392	select ZLIB_INFLATE
1393	help
1394	  Saying Y here includes support for CramFs (Compressed ROM File
1395	  System).  CramFs is designed to be a simple, small, and compressed
1396	  file system for ROM based embedded systems.  CramFs is read-only,
1397	  limited to 256MB file systems (with 16MB files), and doesn't support
1398	  16/32 bits uid/gid, hard links and timestamps.
1399
1400	  See <file:Documentation/filesystems/cramfs.txt> and
1401	  <file:fs/cramfs/README> for further information.
1402
1403	  To compile this as a module, choose M here: the module will be called
1404	  cramfs.  Note that the root file system (the one containing the
1405	  directory /) cannot be compiled as a module.
1406
1407	  If unsure, say N.
1408
1409config VXFS_FS
1410	tristate "FreeVxFS file system support (VERITAS VxFS(TM) compatible)"
1411	depends on BLOCK
1412	help
1413	  FreeVxFS is a file system driver that support the VERITAS VxFS(TM)
1414	  file system format.  VERITAS VxFS(TM) is the standard file system
1415	  of SCO UnixWare (and possibly others) and optionally available
1416	  for Sunsoft Solaris, HP-UX and many other operating systems.
1417	  Currently only readonly access is supported.
1418
1419	  NOTE: the file system type as used by mount(1), mount(2) and
1420	  fstab(5) is 'vxfs' as it describes the file system format, not
1421	  the actual driver.
1422
1423	  To compile this as a module, choose M here: the module will be
1424	  called freevxfs.  If unsure, say N.
1425
1426config MINIX_FS
1427	tristate "Minix file system support"
1428	depends on BLOCK
1429	help
1430	  Minix is a simple operating system used in many classes about OS's.
1431	  The minix file system (method to organize files on a hard disk
1432	  partition or a floppy disk) was the original file system for Linux,
1433	  but has been superseded by the second extended file system ext2fs.
1434	  You don't want to use the minix file system on your hard disk
1435	  because of certain built-in restrictions, but it is sometimes found
1436	  on older Linux floppy disks.  This option will enlarge your kernel
1437	  by about 28 KB. If unsure, say N.
1438
1439	  To compile this file system support as a module, choose M here: the
1440	  module will be called minix.  Note that the file system of your root
1441	  partition (the one containing the directory /) cannot be compiled as
1442	  a module.
1443
1444
1445config HPFS_FS
1446	tristate "OS/2 HPFS file system support"
1447	depends on BLOCK
1448	help
1449	  OS/2 is IBM's operating system for PC's, the same as Warp, and HPFS
1450	  is the file system used for organizing files on OS/2 hard disk
1451	  partitions. Say Y if you want to be able to read files from and
1452	  write files to an OS/2 HPFS partition on your hard drive. OS/2
1453	  floppies however are in regular MSDOS format, so you don't need this
1454	  option in order to be able to read them. Read
1455	  <file:Documentation/filesystems/hpfs.txt>.
1456
1457	  To compile this file system support as a module, choose M here: the
1458	  module will be called hpfs.  If unsure, say N.
1459
1460
1461config QNX4FS_FS
1462	tristate "QNX4 file system support (read only)"
1463	depends on BLOCK
1464	help
1465	  This is the file system used by the real-time operating systems
1466	  QNX 4 and QNX 6 (the latter is also called QNX RTP).
1467	  Further information is available at <http://www.qnx.com/>.
1468	  Say Y if you intend to mount QNX hard disks or floppies.
1469	  Unless you say Y to "QNX4FS read-write support" below, you will
1470	  only be able to read these file systems.
1471
1472	  To compile this file system support as a module, choose M here: the
1473	  module will be called qnx4.
1474
1475	  If you don't know whether you need it, then you don't need it:
1476	  answer N.
1477
1478config QNX4FS_RW
1479	bool "QNX4FS write support (DANGEROUS)"
1480	depends on QNX4FS_FS && EXPERIMENTAL && BROKEN
1481	help
1482	  Say Y if you want to test write support for QNX4 file systems.
1483
1484	  It's currently broken, so for now:
1485	  answer N.
1486
1487config ROMFS_FS
1488	tristate "ROM file system support"
1489	depends on BLOCK
1490	---help---
1491	  This is a very small read-only file system mainly intended for
1492	  initial ram disks of installation disks, but it could be used for
1493	  other read-only media as well.  Read
1494	  <file:Documentation/filesystems/romfs.txt> for details.
1495
1496	  To compile this file system support as a module, choose M here: the
1497	  module will be called romfs.  Note that the file system of your
1498	  root partition (the one containing the directory /) cannot be a
1499	  module.
1500
1501	  If you don't know whether you need it, then you don't need it:
1502	  answer N.
1503
1504
1505config SYSV_FS
1506	tristate "System V/Xenix/V7/Coherent file system support"
1507	depends on BLOCK
1508	help
1509	  SCO, Xenix and Coherent are commercial Unix systems for Intel
1510	  machines, and Version 7 was used on the DEC PDP-11. Saying Y
1511	  here would allow you to read from their floppies and hard disk
1512	  partitions.
1513
1514	  If you have floppies or hard disk partitions like that, it is likely
1515	  that they contain binaries from those other Unix systems; in order
1516	  to run these binaries, you will want to install linux-abi which is
1517	  a set of kernel modules that lets you run SCO, Xenix, Wyse,
1518	  UnixWare, Dell Unix and System V programs under Linux.  It is
1519	  available via FTP (user: ftp) from
1520	  <ftp://ftp.openlinux.org/pub/people/hch/linux-abi/>).
1521	  NOTE: that will work only for binaries from Intel-based systems;
1522	  PDP ones will have to wait until somebody ports Linux to -11 ;-)
1523
1524	  If you only intend to mount files from some other Unix over the
1525	  network using NFS, you don't need the System V file system support
1526	  (but you need NFS file system support obviously).
1527
1528	  Note that this option is generally not needed for floppies, since a
1529	  good portable way to transport files and directories between unixes
1530	  (and even other operating systems) is given by the tar program ("man
1531	  tar" or preferably "info tar").  Note also that this option has
1532	  nothing whatsoever to do with the option "System V IPC". Read about
1533	  the System V file system in
1534	  <file:Documentation/filesystems/sysv-fs.txt>.
1535	  Saying Y here will enlarge your kernel by about 27 KB.
1536
1537	  To compile this as a module, choose M here: the module will be called
1538	  sysv.
1539
1540	  If you haven't heard about all of this before, it's safe to say N.
1541
1542
1543config UFS_FS
1544	tristate "UFS file system support (read only)"
1545	depends on BLOCK
1546	help
1547	  BSD and derivate versions of Unix (such as SunOS, FreeBSD, NetBSD,
1548	  OpenBSD and NeXTstep) use a file system called UFS. Some System V
1549	  Unixes can create and mount hard disk partitions and diskettes using
1550	  this file system as well. Saying Y here will allow you to read from
1551	  these partitions; if you also want to write to them, say Y to the
1552	  experimental "UFS file system write support", below. Please read the
1553	  file <file:Documentation/filesystems/ufs.txt> for more information.
1554
1555          The recently released UFS2 variant (used in FreeBSD 5.x) is
1556          READ-ONLY supported.
1557
1558	  Note that this option is generally not needed for floppies, since a
1559	  good portable way to transport files and directories between unixes
1560	  (and even other operating systems) is given by the tar program ("man
1561	  tar" or preferably "info tar").
1562
1563	  When accessing NeXTstep files, you may need to convert them from the
1564	  NeXT character set to the Latin1 character set; use the program
1565	  recode ("info recode") for this purpose.
1566
1567	  To compile the UFS file system support as a module, choose M here: the
1568	  module will be called ufs.
1569
1570	  If you haven't heard about all of this before, it's safe to say N.
1571
1572config UFS_FS_WRITE
1573	bool "UFS file system write support (DANGEROUS)"
1574	depends on UFS_FS && EXPERIMENTAL
1575	help
1576	  Say Y here if you want to try writing to UFS partitions. This is
1577	  experimental, so you should back up your UFS partitions beforehand.
1578
1579config UFS_DEBUG
1580	bool "UFS debugging"
1581	depends on UFS_FS
1582	help
1583	  If you are experiencing any problems with the UFS filesystem, say
1584	  Y here.  This will result in _many_ additional debugging messages to be
1585	  written to the system log.
1586
1587endmenu
1588
1589menuconfig NETWORK_FILESYSTEMS
1590	bool "Network File Systems"
1591	default y
1592	depends on NET
1593	---help---
1594	  Say Y here to get to see options for network filesystems and
1595	  filesystem-related networking code, such as NFS daemon and
1596	  RPCSEC security modules.
1597
1598	  This option alone does not add any kernel code.
1599
1600	  If you say N, all options in this submenu will be skipped and
1601	  disabled; if unsure, say Y here.
1602
1603if NETWORK_FILESYSTEMS
1604
1605config NFS_FS
1606	tristate "NFS client support"
1607	depends on INET
1608	select LOCKD
1609	select SUNRPC
1610	select NFS_ACL_SUPPORT if NFS_V3_ACL
1611	help
1612	  Choose Y here if you want to access files residing on other
1613	  computers using Sun's Network File System protocol.  To compile
1614	  this file system support as a module, choose M here: the module
1615	  will be called nfs.
1616
1617	  To mount file systems exported by NFS servers, you also need to
1618	  install the user space mount.nfs command which can be found in
1619	  the Linux nfs-utils package, available from http://linux-nfs.org/.
1620	  Information about using the mount command is available in the
1621	  mount(8) man page.  More detail about the Linux NFS client
1622	  implementation is available via the nfs(5) man page.
1623
1624	  Below you can choose which versions of the NFS protocol are
1625	  available in the kernel to mount NFS servers.  Support for NFS
1626	  version 2 (RFC 1094) is always available when NFS_FS is selected.
1627
1628	  To configure a system which mounts its root file system via NFS
1629	  at boot time, say Y here, select "Kernel level IP
1630	  autoconfiguration" in the NETWORK menu, and select "Root file
1631	  system on NFS" below.  You cannot compile this file system as a
1632	  module in this case.
1633
1634	  If unsure, say N.
1635
1636config NFS_V3
1637	bool "NFS client support for NFS version 3"
1638	depends on NFS_FS
1639	help
1640	  This option enables support for version 3 of the NFS protocol
1641	  (RFC 1813) in the kernel's NFS client.
1642
1643	  If unsure, say Y.
1644
1645config NFS_V3_ACL
1646	bool "NFS client support for the NFSv3 ACL protocol extension"
1647	depends on NFS_V3
1648	help
1649	  Some NFS servers support an auxiliary NFSv3 ACL protocol that
1650	  Sun added to Solaris but never became an official part of the
1651	  NFS version 3 protocol.  This protocol extension allows
1652	  applications on NFS clients to manipulate POSIX Access Control
1653	  Lists on files residing on NFS servers.  NFS servers enforce
1654	  ACLs on local files whether this protocol is available or not.
1655
1656	  Choose Y here if your NFS server supports the Solaris NFSv3 ACL
1657	  protocol extension and you want your NFS client to allow
1658	  applications to access and modify ACLs on files on the server.
1659
1660	  Most NFS servers don't support the Solaris NFSv3 ACL protocol
1661	  extension.  You can choose N here or specify the "noacl" mount
1662	  option to prevent your NFS client from trying to use the NFSv3
1663	  ACL protocol.
1664
1665	  If unsure, say N.
1666
1667config NFS_V4
1668	bool "NFS client support for NFS version 4 (EXPERIMENTAL)"
1669	depends on NFS_FS && EXPERIMENTAL
1670	select RPCSEC_GSS_KRB5
1671	help
1672	  This option enables support for version 4 of the NFS protocol
1673	  (RFC 3530) in the kernel's NFS client.
1674
1675	  To mount NFS servers using NFSv4, you also need to install user
1676	  space programs which can be found in the Linux nfs-utils package,
1677	  available from http://linux-nfs.org/.
1678
1679	  If unsure, say N.
1680
1681config ROOT_NFS
1682	bool "Root file system on NFS"
1683	depends on NFS_FS=y && IP_PNP
1684	help
1685	  If you want your system to mount its root file system via NFS,
1686	  choose Y here.  This is common practice for managing systems
1687	  without local permanent storage.  For details, read
1688	  <file:Documentation/filesystems/nfsroot.txt>.
1689
1690	  Most people say N here.
1691
1692config NFSD
1693	tristate "NFS server support"
1694	depends on INET
1695	select LOCKD
1696	select SUNRPC
1697	select EXPORTFS
1698	select NFS_ACL_SUPPORT if NFSD_V2_ACL
1699	help
1700	  Choose Y here if you want to allow other computers to access
1701	  files residing on this system using Sun's Network File System
1702	  protocol.  To compile the NFS server support as a module,
1703	  choose M here: the module will be called nfsd.
1704
1705	  You may choose to use a user-space NFS server instead, in which
1706	  case you can choose N here.
1707
1708	  To export local file systems using NFS, you also need to install
1709	  user space programs which can be found in the Linux nfs-utils
1710	  package, available from http://linux-nfs.org/.  More detail about
1711	  the Linux NFS server implementation is available via the
1712	  exports(5) man page.
1713
1714	  Below you can choose which versions of the NFS protocol are
1715	  available to clients mounting the NFS server on this system.
1716	  Support for NFS version 2 (RFC 1094) is always available when
1717	  CONFIG_NFSD is selected.
1718
1719	  If unsure, say N.
1720
1721config NFSD_V2_ACL
1722	bool
1723	depends on NFSD
1724
1725config NFSD_V3
1726	bool "NFS server support for NFS version 3"
1727	depends on NFSD
1728	help
1729	  This option enables support in your system's NFS server for
1730	  version 3 of the NFS protocol (RFC 1813).
1731
1732	  If unsure, say Y.
1733
1734config NFSD_V3_ACL
1735	bool "NFS server support for the NFSv3 ACL protocol extension"
1736	depends on NFSD_V3
1737	select NFSD_V2_ACL
1738	help
1739	  Solaris NFS servers support an auxiliary NFSv3 ACL protocol that
1740	  never became an official part of the NFS version 3 protocol.
1741	  This protocol extension allows applications on NFS clients to
1742	  manipulate POSIX Access Control Lists on files residing on NFS
1743	  servers.  NFS servers enforce POSIX ACLs on local files whether
1744	  this protocol is available or not.
1745
1746	  This option enables support in your system's NFS server for the
1747	  NFSv3 ACL protocol extension allowing NFS clients to manipulate
1748	  POSIX ACLs on files exported by your system's NFS server.  NFS
1749	  clients which support the Solaris NFSv3 ACL protocol can then
1750	  access and modify ACLs on your NFS server.
1751
1752	  To store ACLs on your NFS server, you also need to enable ACL-
1753	  related CONFIG options for your local file systems of choice.
1754
1755	  If unsure, say N.
1756
1757config NFSD_V4
1758	bool "NFS server support for NFS version 4 (EXPERIMENTAL)"
1759	depends on NFSD && PROC_FS && EXPERIMENTAL
1760	select NFSD_V3
1761	select FS_POSIX_ACL
1762	select RPCSEC_GSS_KRB5
1763	help
1764	  This option enables support in your system's NFS server for
1765	  version 4 of the NFS protocol (RFC 3530).
1766
1767	  To export files using NFSv4, you need to install additional user
1768	  space programs which can be found in the Linux nfs-utils package,
1769	  available from http://linux-nfs.org/.
1770
1771	  If unsure, say N.
1772
1773config LOCKD
1774	tristate
1775
1776config LOCKD_V4
1777	bool
1778	depends on NFSD_V3 || NFS_V3
1779	default y
1780
1781config EXPORTFS
1782	tristate
1783
1784config NFS_ACL_SUPPORT
1785	tristate
1786	select FS_POSIX_ACL
1787
1788config NFS_COMMON
1789	bool
1790	depends on NFSD || NFS_FS
1791	default y
1792
1793config SUNRPC
1794	tristate
1795
1796config SUNRPC_GSS
1797	tristate
1798
1799config SUNRPC_XPRT_RDMA
1800	tristate
1801	depends on SUNRPC && INFINIBAND && EXPERIMENTAL
1802	default SUNRPC && INFINIBAND
1803	help
1804	  This option enables an RPC client transport capability that
1805	  allows the NFS client to mount servers via an RDMA-enabled
1806	  transport.
1807
1808	  To compile RPC client RDMA transport support as a module,
1809	  choose M here: the module will be called xprtrdma.
1810
1811	  If unsure, say N.
1812
1813config RPCSEC_GSS_KRB5
1814	tristate "Secure RPC: Kerberos V mechanism (EXPERIMENTAL)"
1815	depends on SUNRPC && EXPERIMENTAL
1816	select SUNRPC_GSS
1817	select CRYPTO
1818	select CRYPTO_MD5
1819	select CRYPTO_DES
1820	select CRYPTO_CBC
1821	help
1822	  Choose Y here to enable Secure RPC using the Kerberos version 5
1823	  GSS-API mechanism (RFC 1964).
1824
1825	  Secure RPC calls with Kerberos require an auxiliary user-space
1826	  daemon which may be found in the Linux nfs-utils package
1827	  available from http://linux-nfs.org/.  In addition, user-space
1828	  Kerberos support should be installed.
1829
1830	  If unsure, say N.
1831
1832config RPCSEC_GSS_SPKM3
1833	tristate "Secure RPC: SPKM3 mechanism (EXPERIMENTAL)"
1834	depends on SUNRPC && EXPERIMENTAL
1835	select SUNRPC_GSS
1836	select CRYPTO
1837	select CRYPTO_MD5
1838	select CRYPTO_DES
1839	select CRYPTO_CAST5
1840	select CRYPTO_CBC
1841	help
1842	  Choose Y here to enable Secure RPC using the SPKM3 public key
1843	  GSS-API mechansim (RFC 2025).
1844
1845	  Secure RPC calls with SPKM3 require an auxiliary userspace
1846	  daemon which may be found in the Linux nfs-utils package
1847	  available from http://linux-nfs.org/.
1848
1849	  If unsure, say N.
1850
1851config SMB_FS
1852	tristate "SMB file system support (OBSOLETE, please use CIFS)"
1853	depends on INET
1854	select NLS
1855	help
1856	  SMB (Server Message Block) is the protocol Windows for Workgroups
1857	  (WfW), Windows 95/98, Windows NT and OS/2 Lan Manager use to share
1858	  files and printers over local networks.  Saying Y here allows you to
1859	  mount their file systems (often called "shares" in this context) and
1860	  access them just like any other Unix directory.  Currently, this
1861	  works only if the Windows machines use TCP/IP as the underlying
1862	  transport protocol, and not NetBEUI.  For details, read
1863	  <file:Documentation/filesystems/smbfs.txt> and the SMB-HOWTO,
1864	  available from <http://www.tldp.org/docs.html#howto>.
1865
1866	  Note: if you just want your box to act as an SMB *server* and make
1867	  files and printing services available to Windows clients (which need
1868	  to have a TCP/IP stack), you don't need to say Y here; you can use
1869	  the program SAMBA (available from <ftp://ftp.samba.org/pub/samba/>)
1870	  for that.
1871
1872	  General information about how to connect Linux, Windows machines and
1873	  Macs is on the WWW at <http://www.eats.com/linux_mac_win.html>.
1874
1875	  To compile the SMB support as a module, choose M here:
1876	  the module will be called smbfs.  Most people say N, however.
1877
1878config SMB_NLS_DEFAULT
1879	bool "Use a default NLS"
1880	depends on SMB_FS
1881	help
1882	  Enabling this will make smbfs use nls translations by default. You
1883	  need to specify the local charset (CONFIG_NLS_DEFAULT) in the nls
1884	  settings and you need to give the default nls for the SMB server as
1885	  CONFIG_SMB_NLS_REMOTE.
1886
1887	  The nls settings can be changed at mount time, if your smbmount
1888	  supports that, using the codepage and iocharset parameters.
1889
1890	  smbmount from samba 2.2.0 or later supports this.
1891
1892config SMB_NLS_REMOTE
1893	string "Default Remote NLS Option"
1894	depends on SMB_NLS_DEFAULT
1895	default "cp437"
1896	help
1897	  This setting allows you to specify a default value for which
1898	  codepage the server uses. If this field is left blank no
1899	  translations will be done by default. The local codepage/charset
1900	  default to CONFIG_NLS_DEFAULT.
1901
1902	  The nls settings can be changed at mount time, if your smbmount
1903	  supports that, using the codepage and iocharset parameters.
1904
1905	  smbmount from samba 2.2.0 or later supports this.
1906
1907config CIFS
1908	tristate "CIFS support (advanced network filesystem, SMBFS successor)"
1909	depends on INET
1910	select NLS
1911	help
1912	  This is the client VFS module for the Common Internet File System
1913	  (CIFS) protocol which is the successor to the Server Message Block
1914	  (SMB) protocol, the native file sharing mechanism for most early
1915	  PC operating systems.  The CIFS protocol is fully supported by
1916	  file servers such as Windows 2000 (including Windows 2003, NT 4
1917	  and Windows XP) as well by Samba (which provides excellent CIFS
1918	  server support for Linux and many other operating systems). Limited
1919	  support for OS/2 and Windows ME and similar servers is provided as
1920	  well.
1921
1922	  The cifs module provides an advanced network file system
1923	  client for mounting to CIFS compliant servers.  It includes
1924	  support for DFS (hierarchical name space), secure per-user
1925	  session establishment via Kerberos or NTLM or NTLMv2,
1926	  safe distributed caching (oplock), optional packet
1927	  signing, Unicode and other internationalization improvements.
1928	  If you need to mount to Samba or Windows from this machine, say Y.
1929
1930config CIFS_STATS
1931        bool "CIFS statistics"
1932        depends on CIFS
1933        help
1934          Enabling this option will cause statistics for each server share
1935	  mounted by the cifs client to be displayed in /proc/fs/cifs/Stats
1936
1937config CIFS_STATS2
1938	bool "Extended statistics"
1939	depends on CIFS_STATS
1940	help
1941	  Enabling this option will allow more detailed statistics on SMB
1942	  request timing to be displayed in /proc/fs/cifs/DebugData and also
1943	  allow optional logging of slow responses to dmesg (depending on the
1944	  value of /proc/fs/cifs/cifsFYI, see fs/cifs/README for more details).
1945	  These additional statistics may have a minor effect on performance
1946	  and memory utilization.
1947
1948	  Unless you are a developer or are doing network performance analysis
1949	  or tuning, say N.
1950
1951config CIFS_WEAK_PW_HASH
1952	bool "Support legacy servers which use weaker LANMAN security"
1953	depends on CIFS
1954	help
1955	  Modern CIFS servers including Samba and most Windows versions
1956	  (since 1997) support stronger NTLM (and even NTLMv2 and Kerberos)
1957	  security mechanisms. These hash the password more securely
1958	  than the mechanisms used in the older LANMAN version of the
1959	  SMB protocol but LANMAN based authentication is needed to
1960	  establish sessions with some old SMB servers.
1961
1962	  Enabling this option allows the cifs module to mount to older
1963	  LANMAN based servers such as OS/2 and Windows 95, but such
1964	  mounts may be less secure than mounts using NTLM or more recent
1965	  security mechanisms if you are on a public network.  Unless you
1966	  have a need to access old SMB servers (and are on a private
1967	  network) you probably want to say N.  Even if this support
1968	  is enabled in the kernel build, LANMAN authentication will not be
1969	  used automatically. At runtime LANMAN mounts are disabled but
1970	  can be set to required (or optional) either in
1971	  /proc/fs/cifs (see fs/cifs/README for more detail) or via an
1972	  option on the mount command. This support is disabled by
1973	  default in order to reduce the possibility of a downgrade
1974	  attack.
1975
1976	  If unsure, say N.
1977
1978config CIFS_XATTR
1979        bool "CIFS extended attributes"
1980        depends on CIFS
1981        help
1982          Extended attributes are name:value pairs associated with inodes by
1983          the kernel or by users (see the attr(5) manual page, or visit
1984          <http://acl.bestbits.at/> for details).  CIFS maps the name of
1985          extended attributes beginning with the user namespace prefix
1986          to SMB/CIFS EAs. EAs are stored on Windows servers without the
1987          user namespace prefix, but their names are seen by Linux cifs clients
1988          prefaced by the user namespace prefix. The system namespace
1989          (used by some filesystems to store ACLs) is not supported at
1990          this time.
1991
1992          If unsure, say N.
1993
1994config CIFS_POSIX
1995        bool "CIFS POSIX Extensions"
1996        depends on CIFS_XATTR
1997        help
1998          Enabling this option will cause the cifs client to attempt to
1999	  negotiate a newer dialect with servers, such as Samba 3.0.5
2000	  or later, that optionally can handle more POSIX like (rather
2001	  than Windows like) file behavior.  It also enables
2002	  support for POSIX ACLs (getfacl and setfacl) to servers
2003	  (such as Samba 3.10 and later) which can negotiate
2004	  CIFS POSIX ACL support.  If unsure, say N.
2005
2006config CIFS_DEBUG2
2007	bool "Enable additional CIFS debugging routines"
2008	depends on CIFS
2009	help
2010	   Enabling this option adds a few more debugging routines
2011	   to the cifs code which slightly increases the size of
2012	   the cifs module and can cause additional logging of debug
2013	   messages in some error paths, slowing performance. This
2014	   option can be turned off unless you are debugging
2015	   cifs problems.  If unsure, say N.
2016
2017config CIFS_EXPERIMENTAL
2018	  bool "CIFS Experimental Features (EXPERIMENTAL)"
2019	  depends on CIFS && EXPERIMENTAL
2020	  help
2021	    Enables cifs features under testing. These features are
2022	    experimental and currently include DFS support and directory
2023	    change notification ie fcntl(F_DNOTIFY), as well as the upcall
2024	    mechanism which will be used for Kerberos session negotiation
2025	    and uid remapping.  Some of these features also may depend on
2026	    setting a value of 1 to the pseudo-file /proc/fs/cifs/Experimental
2027	    (which is disabled by default). See the file fs/cifs/README
2028	    for more details.  If unsure, say N.
2029
2030config CIFS_UPCALL
2031	  bool "Kerberos/SPNEGO advanced session setup (EXPERIMENTAL)"
2032	  depends on CIFS_EXPERIMENTAL
2033	  depends on KEYS
2034	  help
2035	    Enables an upcall mechanism for CIFS which accesses
2036	    userspace helper utilities to provide SPNEGO packaged (RFC 4178)
2037	    Kerberos tickets which are needed to mount to certain secure servers
2038	    (for which more secure Kerberos authentication is required). If
2039	    unsure, say N.
2040
2041config CIFS_DFS_UPCALL
2042	  bool "DFS feature support (EXPERIMENTAL)"
2043	  depends on CIFS_EXPERIMENTAL
2044	  depends on KEYS
2045	  help
2046	    Enables an upcall mechanism for CIFS which contacts userspace
2047	    helper utilities to provide server name resolution (host names to
2048	    IP addresses) which is needed for implicit mounts of DFS junction
2049	    points. If unsure, say N.
2050
2051config NCP_FS
2052	tristate "NCP file system support (to mount NetWare volumes)"
2053	depends on IPX!=n || INET
2054	help
2055	  NCP (NetWare Core Protocol) is a protocol that runs over IPX and is
2056	  used by Novell NetWare clients to talk to file servers.  It is to
2057	  IPX what NFS is to TCP/IP, if that helps.  Saying Y here allows you
2058	  to mount NetWare file server volumes and to access them just like
2059	  any other Unix directory.  For details, please read the file
2060	  <file:Documentation/filesystems/ncpfs.txt> in the kernel source and
2061	  the IPX-HOWTO from <http://www.tldp.org/docs.html#howto>.
2062
2063	  You do not have to say Y here if you want your Linux box to act as a
2064	  file *server* for Novell NetWare clients.
2065
2066	  General information about how to connect Linux, Windows machines and
2067	  Macs is on the WWW at <http://www.eats.com/linux_mac_win.html>.
2068
2069	  To compile this as a module, choose M here: the module will be called
2070	  ncpfs.  Say N unless you are connected to a Novell network.
2071
2072source "fs/ncpfs/Kconfig"
2073
2074config CODA_FS
2075	tristate "Coda file system support (advanced network fs)"
2076	depends on INET
2077	help
2078	  Coda is an advanced network file system, similar to NFS in that it
2079	  enables you to mount file systems of a remote server and access them
2080	  with regular Unix commands as if they were sitting on your hard
2081	  disk.  Coda has several advantages over NFS: support for
2082	  disconnected operation (e.g. for laptops), read/write server
2083	  replication, security model for authentication and encryption,
2084	  persistent client caches and write back caching.
2085
2086	  If you say Y here, your Linux box will be able to act as a Coda
2087	  *client*.  You will need user level code as well, both for the
2088	  client and server.  Servers are currently user level, i.e. they need
2089	  no kernel support.  Please read
2090	  <file:Documentation/filesystems/coda.txt> and check out the Coda
2091	  home page <http://www.coda.cs.cmu.edu/>.
2092
2093	  To compile the coda client support as a module, choose M here: the
2094	  module will be called coda.
2095
2096config CODA_FS_OLD_API
2097	bool "Use 96-bit Coda file identifiers"
2098	depends on CODA_FS
2099	help
2100	  A new kernel-userspace API had to be introduced for Coda v6.0
2101	  to support larger 128-bit file identifiers as needed by the
2102	  new realms implementation.
2103
2104	  However this new API is not backward compatible with older
2105	  clients. If you really need to run the old Coda userspace
2106	  cache manager then say Y.
2107
2108	  For most cases you probably want to say N.
2109
2110config AFS_FS
2111	tristate "Andrew File System support (AFS) (EXPERIMENTAL)"
2112	depends on INET && EXPERIMENTAL
2113	select AF_RXRPC
2114	help
2115	  If you say Y here, you will get an experimental Andrew File System
2116	  driver. It currently only supports unsecured read-only AFS access.
2117
2118	  See <file:Documentation/filesystems/afs.txt> for more information.
2119
2120	  If unsure, say N.
2121
2122config AFS_DEBUG
2123	bool "AFS dynamic debugging"
2124	depends on AFS_FS
2125	help
2126	  Say Y here to make runtime controllable debugging messages appear.
2127
2128	  See <file:Documentation/filesystems/afs.txt> for more information.
2129
2130	  If unsure, say N.
2131
2132config 9P_FS
2133	tristate "Plan 9 Resource Sharing Support (9P2000) (Experimental)"
2134	depends on INET && NET_9P && EXPERIMENTAL
2135	help
2136	  If you say Y here, you will get experimental support for
2137	  Plan 9 resource sharing via the 9P2000 protocol.
2138
2139	  See <http://v9fs.sf.net> for more information.
2140
2141	  If unsure, say N.
2142
2143endif # NETWORK_FILESYSTEMS
2144
2145if BLOCK
2146menu "Partition Types"
2147
2148source "fs/partitions/Kconfig"
2149
2150endmenu
2151endif
2152
2153source "fs/nls/Kconfig"
2154source "fs/dlm/Kconfig"
2155
2156endmenu
2157