xref: /openbmc/linux/fs/Kconfig (revision 643d1f7f)
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)
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_DEBUG_MASKLOG
448	bool "OCFS2 logging support"
449	depends on OCFS2_FS
450	default y
451	help
452	  The ocfs2 filesystem has an extensive logging system.  The system
453	  allows selection of events to log via files in /sys/o2cb/logmask/.
454	  This option will enlarge your kernel, but it allows debugging of
455	  ocfs2 filesystem issues.
456
457config OCFS2_DEBUG_FS
458	bool "OCFS2 expensive checks"
459	depends on OCFS2_FS
460	default n
461	help
462	  This option will enable expensive consistency checks. Enable
463	  this option for debugging only as it is likely to decrease
464	  performance of the filesystem.
465
466config MINIX_FS
467	tristate "Minix fs support"
468	help
469	  Minix is a simple operating system used in many classes about OS's.
470	  The minix file system (method to organize files on a hard disk
471	  partition or a floppy disk) was the original file system for Linux,
472	  but has been superseded by the second extended file system ext2fs.
473	  You don't want to use the minix file system on your hard disk
474	  because of certain built-in restrictions, but it is sometimes found
475	  on older Linux floppy disks.  This option will enlarge your kernel
476	  by about 28 KB. If unsure, say N.
477
478	  To compile this file system support as a module, choose M here: the
479	  module will be called minix.  Note that the file system of your root
480	  partition (the one containing the directory /) cannot be compiled as
481	  a module.
482
483config ROMFS_FS
484	tristate "ROM file system support"
485	---help---
486	  This is a very small read-only file system mainly intended for
487	  initial ram disks of installation disks, but it could be used for
488	  other read-only media as well.  Read
489	  <file:Documentation/filesystems/romfs.txt> for details.
490
491	  To compile this file system support as a module, choose M here: the
492	  module will be called romfs.  Note that the file system of your
493	  root partition (the one containing the directory /) cannot be a
494	  module.
495
496	  If you don't know whether you need it, then you don't need it:
497	  answer N.
498
499endif
500
501config INOTIFY
502	bool "Inotify file change notification support"
503	default y
504	---help---
505	  Say Y here to enable inotify support.  Inotify is a file change
506	  notification system and a replacement for dnotify.  Inotify fixes
507	  numerous shortcomings in dnotify and introduces several new features
508	  including multiple file events, one-shot support, and unmount
509	  notification.
510
511	  For more information, see <file:Documentation/filesystems/inotify.txt>
512
513	  If unsure, say Y.
514
515config INOTIFY_USER
516	bool "Inotify support for userspace"
517	depends on INOTIFY
518	default y
519	---help---
520	  Say Y here to enable inotify support for userspace, including the
521	  associated system calls.  Inotify allows monitoring of both files and
522	  directories via a single open fd.  Events are read from the file
523	  descriptor, which is also select()- and poll()-able.
524
525	  For more information, see <file:Documentation/filesystems/inotify.txt>
526
527	  If unsure, say Y.
528
529config QUOTA
530	bool "Quota support"
531	help
532	  If you say Y here, you will be able to set per user limits for disk
533	  usage (also called disk quotas). Currently, it works for the
534	  ext2, ext3, and reiserfs file system. ext3 also supports journalled
535	  quotas for which you don't need to run quotacheck(8) after an unclean
536	  shutdown.
537	  For further details, read the Quota mini-HOWTO, available from
538	  <http://www.tldp.org/docs.html#howto>, or the documentation provided
539	  with the quota tools. Probably the quota support is only useful for
540	  multi user systems. If unsure, say N.
541
542config QUOTA_NETLINK_INTERFACE
543	bool "Report quota messages through netlink interface"
544	depends on QUOTA && NET
545	help
546	  If you say Y here, quota warnings (about exceeding softlimit, reaching
547	  hardlimit, etc.) will be reported through netlink interface. If unsure,
548	  say Y.
549
550config PRINT_QUOTA_WARNING
551	bool "Print quota warnings to console (OBSOLETE)"
552	depends on QUOTA
553	default y
554	help
555	  If you say Y here, quota warnings (about exceeding softlimit, reaching
556	  hardlimit, etc.) will be printed to the process' controlling terminal.
557	  Note that this behavior is currently deprecated and may go away in
558	  future. Please use notification via netlink socket instead.
559
560config QFMT_V1
561	tristate "Old quota format support"
562	depends on QUOTA
563	help
564	  This quota format was (is) used by kernels earlier than 2.4.22. If
565	  you have quota working and you don't want to convert to new quota
566	  format say Y here.
567
568config QFMT_V2
569	tristate "Quota format v2 support"
570	depends on QUOTA
571	help
572	  This quota format allows using quotas with 32-bit UIDs/GIDs. If you
573	  need this functionality say Y here.
574
575config QUOTACTL
576	bool
577	depends on XFS_QUOTA || QUOTA
578	default y
579
580config DNOTIFY
581	bool "Dnotify support"
582	default y
583	help
584	  Dnotify is a directory-based per-fd file change notification system
585	  that uses signals to communicate events to user-space.  There exist
586	  superior alternatives, but some applications may still rely on
587	  dnotify.
588
589	  If unsure, say Y.
590
591config AUTOFS_FS
592	tristate "Kernel automounter support"
593	help
594	  The automounter is a tool to automatically mount remote file systems
595	  on demand. This implementation is partially kernel-based to reduce
596	  overhead in the already-mounted case; this is unlike the BSD
597	  automounter (amd), which is a pure user space daemon.
598
599	  To use the automounter you need the user-space tools from the autofs
600	  package; you can find the location in <file:Documentation/Changes>.
601	  You also want to answer Y to "NFS file system support", below.
602
603	  If you want to use the newer version of the automounter with more
604	  features, say N here and say Y to "Kernel automounter v4 support",
605	  below.
606
607	  To compile this support as a module, choose M here: the module will be
608	  called autofs.
609
610	  If you are not a part of a fairly large, distributed network, you
611	  probably do not need an automounter, and can say N here.
612
613config AUTOFS4_FS
614	tristate "Kernel automounter version 4 support (also supports v3)"
615	help
616	  The automounter is a tool to automatically mount remote file systems
617	  on demand. This implementation is partially kernel-based to reduce
618	  overhead in the already-mounted case; this is unlike the BSD
619	  automounter (amd), which is a pure user space daemon.
620
621	  To use the automounter you need the user-space tools from
622	  <ftp://ftp.kernel.org/pub/linux/daemons/autofs/v4/>; you also
623	  want to answer Y to "NFS file system support", below.
624
625	  To compile this support as a module, choose M here: the module will be
626	  called autofs4.  You will need to add "alias autofs autofs4" to your
627	  modules configuration file.
628
629	  If you are not a part of a fairly large, distributed network or
630	  don't have a laptop which needs to dynamically reconfigure to the
631	  local network, you probably do not need an automounter, and can say
632	  N here.
633
634config FUSE_FS
635	tristate "Filesystem in Userspace support"
636	help
637	  With FUSE it is possible to implement a fully functional filesystem
638	  in a userspace program.
639
640	  There's also companion library: libfuse.  This library along with
641	  utilities is available from the FUSE homepage:
642	  <http://fuse.sourceforge.net/>
643
644	  See <file:Documentation/filesystems/fuse.txt> for more information.
645	  See <file:Documentation/Changes> for needed library/utility version.
646
647	  If you want to develop a userspace FS, or if you want to use
648	  a filesystem based on FUSE, answer Y or M.
649
650config GENERIC_ACL
651	bool
652	select FS_POSIX_ACL
653
654if BLOCK
655menu "CD-ROM/DVD Filesystems"
656
657config ISO9660_FS
658	tristate "ISO 9660 CDROM file system support"
659	help
660	  This is the standard file system used on CD-ROMs.  It was previously
661	  known as "High Sierra File System" and is called "hsfs" on other
662	  Unix systems.  The so-called Rock-Ridge extensions which allow for
663	  long Unix filenames and symbolic links are also supported by this
664	  driver.  If you have a CD-ROM drive and want to do more with it than
665	  just listen to audio CDs and watch its LEDs, say Y (and read
666	  <file:Documentation/filesystems/isofs.txt> and the CD-ROM-HOWTO,
667	  available from <http://www.tldp.org/docs.html#howto>), thereby
668	  enlarging your kernel by about 27 KB; otherwise say N.
669
670	  To compile this file system support as a module, choose M here: the
671	  module will be called isofs.
672
673config JOLIET
674	bool "Microsoft Joliet CDROM extensions"
675	depends on ISO9660_FS
676	select NLS
677	help
678	  Joliet is a Microsoft extension for the ISO 9660 CD-ROM file system
679	  which allows for long filenames in unicode format (unicode is the
680	  new 16 bit character code, successor to ASCII, which encodes the
681	  characters of almost all languages of the world; see
682	  <http://www.unicode.org/> for more information).  Say Y here if you
683	  want to be able to read Joliet CD-ROMs under Linux.
684
685config ZISOFS
686	bool "Transparent decompression extension"
687	depends on ISO9660_FS
688	select ZLIB_INFLATE
689	help
690	  This is a Linux-specific extension to RockRidge which lets you store
691	  data in compressed form on a CD-ROM and have it transparently
692	  decompressed when the CD-ROM is accessed.  See
693	  <http://www.kernel.org/pub/linux/utils/fs/zisofs/> for the tools
694	  necessary to create such a filesystem.  Say Y here if you want to be
695	  able to read such compressed CD-ROMs.
696
697config UDF_FS
698	tristate "UDF file system support"
699	help
700	  This is the new file system used on some CD-ROMs and DVDs. Say Y if
701	  you intend to mount DVD discs or CDRW's written in packet mode, or
702	  if written to by other UDF utilities, such as DirectCD.
703	  Please read <file:Documentation/filesystems/udf.txt>.
704
705	  To compile this file system support as a module, choose M here: the
706	  module will be called udf.
707
708	  If unsure, say N.
709
710config UDF_NLS
711	bool
712	default y
713	depends on (UDF_FS=m && NLS) || (UDF_FS=y && NLS=y)
714
715endmenu
716endif
717
718if BLOCK
719menu "DOS/FAT/NT Filesystems"
720
721config FAT_FS
722	tristate
723	select NLS
724	help
725	  If you want to use one of the FAT-based file systems (the MS-DOS and
726	  VFAT (Windows 95) file systems), then you must say Y or M here
727	  to include FAT support. You will then be able to mount partitions or
728	  diskettes with FAT-based file systems and transparently access the
729	  files on them, i.e. MSDOS files will look and behave just like all
730	  other Unix files.
731
732	  This FAT support is not a file system in itself, it only provides
733	  the foundation for the other file systems. You will have to say Y or
734	  M to at least one of "MSDOS fs support" or "VFAT fs support" in
735	  order to make use of it.
736
737	  Another way to read and write MSDOS floppies and hard drive
738	  partitions from within Linux (but not transparently) is with the
739	  mtools ("man mtools") program suite. You don't need to say Y here in
740	  order to do that.
741
742	  If you need to move large files on floppies between a DOS and a
743	  Linux box, say Y here, mount the floppy under Linux with an MSDOS
744	  file system and use GNU tar's M option. GNU tar is a program
745	  available for Unix and DOS ("man tar" or "info tar").
746
747	  The FAT support will enlarge your kernel by about 37 KB. If unsure,
748	  say Y.
749
750	  To compile this as a module, choose M here: the module will be called
751	  fat.  Note that if you compile the FAT support as a module, you
752	  cannot compile any of the FAT-based file systems into the kernel
753	  -- they will have to be modules as well.
754
755config MSDOS_FS
756	tristate "MSDOS fs support"
757	select FAT_FS
758	help
759	  This allows you to mount MSDOS partitions of your hard drive (unless
760	  they are compressed; to access compressed MSDOS partitions under
761	  Linux, you can either use the DOS emulator DOSEMU, described in the
762	  DOSEMU-HOWTO, available from
763	  <http://www.tldp.org/docs.html#howto>, or try dmsdosfs in
764	  <ftp://ibiblio.org/pub/Linux/system/filesystems/dosfs/>. If you
765	  intend to use dosemu with a non-compressed MSDOS partition, say Y
766	  here) and MSDOS floppies. This means that file access becomes
767	  transparent, i.e. the MSDOS files look and behave just like all
768	  other Unix files.
769
770	  If you have Windows 95 or Windows NT installed on your MSDOS
771	  partitions, you should use the VFAT file system (say Y to "VFAT fs
772	  support" below), or you will not be able to see the long filenames
773	  generated by Windows 95 / Windows NT.
774
775	  This option will enlarge your kernel by about 7 KB. If unsure,
776	  answer Y. This will only work if you said Y to "DOS FAT fs support"
777	  as well. To compile this as a module, choose M here: the module will
778	  be called msdos.
779
780config VFAT_FS
781	tristate "VFAT (Windows-95) fs support"
782	select FAT_FS
783	help
784	  This option provides support for normal Windows file systems with
785	  long filenames.  That includes non-compressed FAT-based file systems
786	  used by Windows 95, Windows 98, Windows NT 4.0, and the Unix
787	  programs from the mtools package.
788
789	  The VFAT support enlarges your kernel by about 10 KB and it only
790	  works if you said Y to the "DOS FAT fs support" above.  Please read
791	  the file <file:Documentation/filesystems/vfat.txt> for details.  If
792	  unsure, say Y.
793
794	  To compile this as a module, choose M here: the module will be called
795	  vfat.
796
797config FAT_DEFAULT_CODEPAGE
798	int "Default codepage for FAT"
799	depends on MSDOS_FS || VFAT_FS
800	default 437
801	help
802	  This option should be set to the codepage of your FAT filesystems.
803	  It can be overridden with the "codepage" mount option.
804	  See <file:Documentation/filesystems/vfat.txt> for more information.
805
806config FAT_DEFAULT_IOCHARSET
807	string "Default iocharset for FAT"
808	depends on VFAT_FS
809	default "iso8859-1"
810	help
811	  Set this to the default input/output character set you'd
812	  like FAT to use. It should probably match the character set
813	  that most of your FAT filesystems use, and can be overridden
814	  with the "iocharset" mount option for FAT filesystems.
815	  Note that "utf8" is not recommended for FAT filesystems.
816	  If unsure, you shouldn't set "utf8" here.
817	  See <file:Documentation/filesystems/vfat.txt> for more information.
818
819config NTFS_FS
820	tristate "NTFS file system support"
821	select NLS
822	help
823	  NTFS is the file system of Microsoft Windows NT, 2000, XP and 2003.
824
825	  Saying Y or M here enables read support.  There is partial, but
826	  safe, write support available.  For write support you must also
827	  say Y to "NTFS write support" below.
828
829	  There are also a number of user-space tools available, called
830	  ntfsprogs.  These include ntfsundelete and ntfsresize, that work
831	  without NTFS support enabled in the kernel.
832
833	  This is a rewrite from scratch of Linux NTFS support and replaced
834	  the old NTFS code starting with Linux 2.5.11.  A backport to
835	  the Linux 2.4 kernel series is separately available as a patch
836	  from the project web site.
837
838	  For more information see <file:Documentation/filesystems/ntfs.txt>
839	  and <http://linux-ntfs.sourceforge.net/>.
840
841	  To compile this file system support as a module, choose M here: the
842	  module will be called ntfs.
843
844	  If you are not using Windows NT, 2000, XP or 2003 in addition to
845	  Linux on your computer it is safe to say N.
846
847config NTFS_DEBUG
848	bool "NTFS debugging support"
849	depends on NTFS_FS
850	help
851	  If you are experiencing any problems with the NTFS file system, say
852	  Y here.  This will result in additional consistency checks to be
853	  performed by the driver as well as additional debugging messages to
854	  be written to the system log.  Note that debugging messages are
855	  disabled by default.  To enable them, supply the option debug_msgs=1
856	  at the kernel command line when booting the kernel or as an option
857	  to insmod when loading the ntfs module.  Once the driver is active,
858	  you can enable debugging messages by doing (as root):
859	  echo 1 > /proc/sys/fs/ntfs-debug
860	  Replacing the "1" with "0" would disable debug messages.
861
862	  If you leave debugging messages disabled, this results in little
863	  overhead, but enabling debug messages results in very significant
864	  slowdown of the system.
865
866	  When reporting bugs, please try to have available a full dump of
867	  debugging messages while the misbehaviour was occurring.
868
869config NTFS_RW
870	bool "NTFS write support"
871	depends on NTFS_FS
872	help
873	  This enables the partial, but safe, write support in the NTFS driver.
874
875	  The only supported operation is overwriting existing files, without
876	  changing the file length.  No file or directory creation, deletion or
877	  renaming is possible.  Note only non-resident files can be written to
878	  so you may find that some very small files (<500 bytes or so) cannot
879	  be written to.
880
881	  While we cannot guarantee that it will not damage any data, we have
882	  so far not received a single report where the driver would have
883	  damaged someones data so we assume it is perfectly safe to use.
884
885	  Note:  While write support is safe in this version (a rewrite from
886	  scratch of the NTFS support), it should be noted that the old NTFS
887	  write support, included in Linux 2.5.10 and before (since 1997),
888	  is not safe.
889
890	  This is currently useful with TopologiLinux.  TopologiLinux is run
891	  on top of any DOS/Microsoft Windows system without partitioning your
892	  hard disk.  Unlike other Linux distributions TopologiLinux does not
893	  need its own partition.  For more information see
894	  <http://topologi-linux.sourceforge.net/>
895
896	  It is perfectly safe to say N here.
897
898endmenu
899endif
900
901menu "Pseudo filesystems"
902
903config PROC_FS
904	bool "/proc file system support" if EMBEDDED
905	default y
906	help
907	  This is a virtual file system providing information about the status
908	  of the system. "Virtual" means that it doesn't take up any space on
909	  your hard disk: the files are created on the fly by the kernel when
910	  you try to access them. Also, you cannot read the files with older
911	  version of the program less: you need to use more or cat.
912
913	  It's totally cool; for example, "cat /proc/interrupts" gives
914	  information about what the different IRQs are used for at the moment
915	  (there is a small number of Interrupt ReQuest lines in your computer
916	  that are used by the attached devices to gain the CPU's attention --
917	  often a source of trouble if two devices are mistakenly configured
918	  to use the same IRQ). The program procinfo to display some
919	  information about your system gathered from the /proc file system.
920
921	  Before you can use the /proc file system, it has to be mounted,
922	  meaning it has to be given a location in the directory hierarchy.
923	  That location should be /proc. A command such as "mount -t proc proc
924	  /proc" or the equivalent line in /etc/fstab does the job.
925
926	  The /proc file system is explained in the file
927	  <file:Documentation/filesystems/proc.txt> and on the proc(5) manpage
928	  ("man 5 proc").
929
930	  This option will enlarge your kernel by about 67 KB. Several
931	  programs depend on this, so everyone should say Y here.
932
933config PROC_KCORE
934	bool "/proc/kcore support" if !ARM
935	depends on PROC_FS && MMU
936
937config PROC_VMCORE
938        bool "/proc/vmcore support (EXPERIMENTAL)"
939        depends on PROC_FS && EXPERIMENTAL && CRASH_DUMP
940	default y
941        help
942        Exports the dump image of crashed kernel in ELF format.
943
944config PROC_SYSCTL
945	bool "Sysctl support (/proc/sys)" if EMBEDDED
946	depends on PROC_FS
947	select SYSCTL
948	default y
949	---help---
950	  The sysctl interface provides a means of dynamically changing
951	  certain kernel parameters and variables on the fly without requiring
952	  a recompile of the kernel or reboot of the system.  The primary
953	  interface is through /proc/sys.  If you say Y here a tree of
954	  modifiable sysctl entries will be generated beneath the
955          /proc/sys directory. They are explained in the files
956	  in <file:Documentation/sysctl/>.  Note that enabling this
957	  option will enlarge the kernel by at least 8 KB.
958
959	  As it is generally a good thing, you should say Y here unless
960	  building a kernel for install/rescue disks or your system is very
961	  limited in memory.
962
963config SYSFS
964	bool "sysfs file system support" if EMBEDDED
965	default y
966	help
967	The sysfs filesystem is a virtual filesystem that the kernel uses to
968	export internal kernel objects, their attributes, and their
969	relationships to one another.
970
971	Users can use sysfs to ascertain useful information about the running
972	kernel, such as the devices the kernel has discovered on each bus and
973	which driver each is bound to. sysfs can also be used to tune devices
974	and other kernel subsystems.
975
976	Some system agents rely on the information in sysfs to operate.
977	/sbin/hotplug uses device and object attributes in sysfs to assist in
978	delegating policy decisions, like persistently naming devices.
979
980	sysfs is currently used by the block subsystem to mount the root
981	partition.  If sysfs is disabled you must specify the boot device on
982	the kernel boot command line via its major and minor numbers.  For
983	example, "root=03:01" for /dev/hda1.
984
985	Designers of embedded systems may wish to say N here to conserve space.
986
987config TMPFS
988	bool "Virtual memory file system support (former shm fs)"
989	help
990	  Tmpfs is a file system which keeps all files in virtual memory.
991
992	  Everything in tmpfs is temporary in the sense that no files will be
993	  created on your hard drive. The files live in memory and swap
994	  space. If you unmount a tmpfs instance, everything stored therein is
995	  lost.
996
997	  See <file:Documentation/filesystems/tmpfs.txt> for details.
998
999config TMPFS_POSIX_ACL
1000	bool "Tmpfs POSIX Access Control Lists"
1001	depends on TMPFS
1002	select GENERIC_ACL
1003	help
1004	  POSIX Access Control Lists (ACLs) support permissions for users and
1005	  groups beyond the owner/group/world scheme.
1006
1007	  To learn more about Access Control Lists, visit the POSIX ACLs for
1008	  Linux website <http://acl.bestbits.at/>.
1009
1010	  If you don't know what Access Control Lists are, say N.
1011
1012config HUGETLBFS
1013	bool "HugeTLB file system support"
1014	depends on X86 || IA64 || PPC64 || SPARC64 || (SUPERH && MMU) || BROKEN
1015	help
1016	  hugetlbfs is a filesystem backing for HugeTLB pages, based on
1017	  ramfs. For architectures that support it, say Y here and read
1018	  <file:Documentation/vm/hugetlbpage.txt> for details.
1019
1020	  If unsure, say N.
1021
1022config HUGETLB_PAGE
1023	def_bool HUGETLBFS
1024
1025config CONFIGFS_FS
1026	tristate "Userspace-driven configuration filesystem"
1027	depends on SYSFS
1028	help
1029	  configfs is a ram-based filesystem that provides the converse
1030	  of sysfs's functionality. Where sysfs is a filesystem-based
1031	  view of kernel objects, configfs is a filesystem-based manager
1032	  of kernel objects, or config_items.
1033
1034	  Both sysfs and configfs can and should exist together on the
1035	  same system. One is not a replacement for the other.
1036
1037endmenu
1038
1039menu "Miscellaneous filesystems"
1040
1041config ADFS_FS
1042	tristate "ADFS file system support (EXPERIMENTAL)"
1043	depends on BLOCK && EXPERIMENTAL
1044	help
1045	  The Acorn Disc Filing System is the standard file system of the
1046	  RiscOS operating system which runs on Acorn's ARM-based Risc PC
1047	  systems and the Acorn Archimedes range of machines. If you say Y
1048	  here, Linux will be able to read from ADFS partitions on hard drives
1049	  and from ADFS-formatted floppy discs. If you also want to be able to
1050	  write to those devices, say Y to "ADFS write support" below.
1051
1052	  The ADFS partition should be the first partition (i.e.,
1053	  /dev/[hs]d?1) on each of your drives. Please read the file
1054	  <file:Documentation/filesystems/adfs.txt> for further details.
1055
1056	  To compile this code as a module, choose M here: the module will be
1057	  called adfs.
1058
1059	  If unsure, say N.
1060
1061config ADFS_FS_RW
1062	bool "ADFS write support (DANGEROUS)"
1063	depends on ADFS_FS
1064	help
1065	  If you say Y here, you will be able to write to ADFS partitions on
1066	  hard drives and ADFS-formatted floppy disks. This is experimental
1067	  codes, so if you're unsure, say N.
1068
1069config AFFS_FS
1070	tristate "Amiga FFS file system support (EXPERIMENTAL)"
1071	depends on BLOCK && EXPERIMENTAL
1072	help
1073	  The Fast File System (FFS) is the common file system used on hard
1074	  disks by Amiga(tm) systems since AmigaOS Version 1.3 (34.20).  Say Y
1075	  if you want to be able to read and write files from and to an Amiga
1076	  FFS partition on your hard drive.  Amiga floppies however cannot be
1077	  read with this driver due to an incompatibility of the floppy
1078	  controller used in an Amiga and the standard floppy controller in
1079	  PCs and workstations. Read <file:Documentation/filesystems/affs.txt>
1080	  and <file:fs/affs/Changes>.
1081
1082	  With this driver you can also mount disk files used by Bernd
1083	  Schmidt's Un*X Amiga Emulator
1084	  (<http://www.freiburg.linux.de/~uae/>).
1085	  If you want to do this, you will also need to say Y or M to "Loop
1086	  device support", above.
1087
1088	  To compile this file system support as a module, choose M here: the
1089	  module will be called affs.  If unsure, say N.
1090
1091config ECRYPT_FS
1092	tristate "eCrypt filesystem layer support (EXPERIMENTAL)"
1093	depends on EXPERIMENTAL && KEYS && CRYPTO && NET
1094	help
1095	  Encrypted filesystem that operates on the VFS layer.  See
1096	  <file:Documentation/filesystems/ecryptfs.txt> to learn more about
1097	  eCryptfs.  Userspace components are required and can be
1098	  obtained from <http://ecryptfs.sf.net>.
1099
1100	  To compile this file system support as a module, choose M here: the
1101	  module will be called ecryptfs.
1102
1103config HFS_FS
1104	tristate "Apple Macintosh file system support (EXPERIMENTAL)"
1105	depends on BLOCK && EXPERIMENTAL
1106	select NLS
1107	help
1108	  If you say Y here, you will be able to mount Macintosh-formatted
1109	  floppy disks and hard drive partitions with full read-write access.
1110	  Please read <file:Documentation/filesystems/hfs.txt> to learn about
1111	  the available mount options.
1112
1113	  To compile this file system support as a module, choose M here: the
1114	  module will be called hfs.
1115
1116config HFSPLUS_FS
1117	tristate "Apple Extended HFS file system support"
1118	depends on BLOCK
1119	select NLS
1120	select NLS_UTF8
1121	help
1122	  If you say Y here, you will be able to mount extended format
1123	  Macintosh-formatted hard drive partitions with full read-write access.
1124
1125	  This file system is often called HFS+ and was introduced with
1126	  MacOS 8. It includes all Mac specific filesystem data such as
1127	  data forks and creator codes, but it also has several UNIX
1128	  style features such as file ownership and permissions.
1129
1130config BEFS_FS
1131	tristate "BeOS file system (BeFS) support (read only) (EXPERIMENTAL)"
1132	depends on BLOCK && EXPERIMENTAL
1133	select NLS
1134	help
1135	  The BeOS File System (BeFS) is the native file system of Be, Inc's
1136	  BeOS. Notable features include support for arbitrary attributes
1137	  on files and directories, and database-like indices on selected
1138	  attributes. (Also note that this driver doesn't make those features
1139	  available at this time). It is a 64 bit filesystem, so it supports
1140	  extremely large volumes and files.
1141
1142	  If you use this filesystem, you should also say Y to at least one
1143	  of the NLS (native language support) options below.
1144
1145	  If you don't know what this is about, say N.
1146
1147	  To compile this as a module, choose M here: the module will be
1148	  called befs.
1149
1150config BEFS_DEBUG
1151	bool "Debug BeFS"
1152	depends on BEFS_FS
1153	help
1154	  If you say Y here, you can use the 'debug' mount option to enable
1155	  debugging output from the driver.
1156
1157config BFS_FS
1158	tristate "BFS file system support (EXPERIMENTAL)"
1159	depends on BLOCK && EXPERIMENTAL
1160	help
1161	  Boot File System (BFS) is a file system used under SCO UnixWare to
1162	  allow the bootloader access to the kernel image and other important
1163	  files during the boot process.  It is usually mounted under /stand
1164	  and corresponds to the slice marked as "STAND" in the UnixWare
1165	  partition.  You should say Y if you want to read or write the files
1166	  on your /stand slice from within Linux.  You then also need to say Y
1167	  to "UnixWare slices support", below.  More information about the BFS
1168	  file system is contained in the file
1169	  <file:Documentation/filesystems/bfs.txt>.
1170
1171	  If you don't know what this is about, say N.
1172
1173	  To compile this as a module, choose M here: the module will be called
1174	  bfs.  Note that the file system of your root partition (the one
1175	  containing the directory /) cannot be compiled as a module.
1176
1177
1178
1179config EFS_FS
1180	tristate "EFS file system support (read only) (EXPERIMENTAL)"
1181	depends on BLOCK && EXPERIMENTAL
1182	help
1183	  EFS is an older file system used for non-ISO9660 CD-ROMs and hard
1184	  disk partitions by SGI's IRIX operating system (IRIX 6.0 and newer
1185	  uses the XFS file system for hard disk partitions however).
1186
1187	  This implementation only offers read-only access. If you don't know
1188	  what all this is about, it's safe to say N. For more information
1189	  about EFS see its home page at <http://aeschi.ch.eu.org/efs/>.
1190
1191	  To compile the EFS file system support as a module, choose M here: the
1192	  module will be called efs.
1193
1194config JFFS2_FS
1195	tristate "Journalling Flash File System v2 (JFFS2) support"
1196	select CRC32
1197	depends on MTD
1198	help
1199	  JFFS2 is the second generation of the Journalling Flash File System
1200	  for use on diskless embedded devices. It provides improved wear
1201	  levelling, compression and support for hard links. You cannot use
1202	  this on normal block devices, only on 'MTD' devices.
1203
1204	  Further information on the design and implementation of JFFS2 is
1205	  available at <http://sources.redhat.com/jffs2/>.
1206
1207config JFFS2_FS_DEBUG
1208	int "JFFS2 debugging verbosity (0 = quiet, 2 = noisy)"
1209	depends on JFFS2_FS
1210	default "0"
1211	help
1212	  This controls the amount of debugging messages produced by the JFFS2
1213	  code. Set it to zero for use in production systems. For evaluation,
1214	  testing and debugging, it's advisable to set it to one. This will
1215	  enable a few assertions and will print debugging messages at the
1216	  KERN_DEBUG loglevel, where they won't normally be visible. Level 2
1217	  is unlikely to be useful - it enables extra debugging in certain
1218	  areas which at one point needed debugging, but when the bugs were
1219	  located and fixed, the detailed messages were relegated to level 2.
1220
1221	  If reporting bugs, please try to have available a full dump of the
1222	  messages at debug level 1 while the misbehaviour was occurring.
1223
1224config JFFS2_FS_WRITEBUFFER
1225	bool "JFFS2 write-buffering support"
1226	depends on JFFS2_FS
1227	default y
1228	help
1229	  This enables the write-buffering support in JFFS2.
1230
1231	  This functionality is required to support JFFS2 on the following
1232	  types of flash devices:
1233	    - NAND flash
1234	    - NOR flash with transparent ECC
1235	    - DataFlash
1236
1237config JFFS2_FS_WBUF_VERIFY
1238	bool "Verify JFFS2 write-buffer reads"
1239	depends on JFFS2_FS_WRITEBUFFER
1240	default n
1241	help
1242	  This causes JFFS2 to read back every page written through the
1243	  write-buffer, and check for errors.
1244
1245config JFFS2_SUMMARY
1246	bool "JFFS2 summary support (EXPERIMENTAL)"
1247	depends on JFFS2_FS && EXPERIMENTAL
1248	default n
1249	help
1250	  This feature makes it possible to use summary information
1251	  for faster filesystem mount.
1252
1253	  The summary information can be inserted into a filesystem image
1254	  by the utility 'sumtool'.
1255
1256	  If unsure, say 'N'.
1257
1258config JFFS2_FS_XATTR
1259	bool "JFFS2 XATTR support (EXPERIMENTAL)"
1260	depends on JFFS2_FS && EXPERIMENTAL
1261	default n
1262	help
1263	  Extended attributes are name:value pairs associated with inodes by
1264	  the kernel or by users (see the attr(5) manual page, or visit
1265	  <http://acl.bestbits.at/> for details).
1266
1267	  If unsure, say N.
1268
1269config JFFS2_FS_POSIX_ACL
1270	bool "JFFS2 POSIX Access Control Lists"
1271	depends on JFFS2_FS_XATTR
1272	default y
1273	select FS_POSIX_ACL
1274	help
1275	  Posix Access Control Lists (ACLs) support permissions for users and
1276	  groups beyond the owner/group/world scheme.
1277
1278	  To learn more about Access Control Lists, visit the Posix ACLs for
1279	  Linux website <http://acl.bestbits.at/>.
1280
1281	  If you don't know what Access Control Lists are, say N
1282
1283config JFFS2_FS_SECURITY
1284	bool "JFFS2 Security Labels"
1285	depends on JFFS2_FS_XATTR
1286	default y
1287	help
1288	  Security labels support alternative access control models
1289	  implemented by security modules like SELinux.  This option
1290	  enables an extended attribute handler for file security
1291	  labels in the jffs2 filesystem.
1292
1293	  If you are not using a security module that requires using
1294	  extended attributes for file security labels, say N.
1295
1296config JFFS2_COMPRESSION_OPTIONS
1297	bool "Advanced compression options for JFFS2"
1298	depends on JFFS2_FS
1299	default n
1300	help
1301	  Enabling this option allows you to explicitly choose which
1302	  compression modules, if any, are enabled in JFFS2. Removing
1303	  compressors can mean you cannot read existing file systems,
1304	  and enabling experimental compressors can mean that you
1305	  write a file system which cannot be read by a standard kernel.
1306
1307	  If unsure, you should _definitely_ say 'N'.
1308
1309config JFFS2_ZLIB
1310	bool "JFFS2 ZLIB compression support" if JFFS2_COMPRESSION_OPTIONS
1311	select ZLIB_INFLATE
1312	select ZLIB_DEFLATE
1313	depends on JFFS2_FS
1314	default y
1315	help
1316	  Zlib is designed to be a free, general-purpose, legally unencumbered,
1317	  lossless data-compression library for use on virtually any computer
1318	  hardware and operating system. See <http://www.gzip.org/zlib/> for
1319	  further information.
1320
1321	  Say 'Y' if unsure.
1322
1323config JFFS2_LZO
1324	bool "JFFS2 LZO compression support" if JFFS2_COMPRESSION_OPTIONS
1325	select LZO_COMPRESS
1326	select LZO_DECOMPRESS
1327	depends on JFFS2_FS
1328	default n
1329	help
1330	  minilzo-based compression. Generally works better than Zlib.
1331
1332	  This feature was added in July, 2007. Say 'N' if you need
1333	  compatibility with older bootloaders or kernels.
1334
1335config JFFS2_RTIME
1336	bool "JFFS2 RTIME compression support" if JFFS2_COMPRESSION_OPTIONS
1337	depends on JFFS2_FS
1338	default y
1339	help
1340	  Rtime does manage to recompress already-compressed data. Say 'Y' if unsure.
1341
1342config JFFS2_RUBIN
1343	bool "JFFS2 RUBIN compression support" if JFFS2_COMPRESSION_OPTIONS
1344	depends on JFFS2_FS
1345	default n
1346	help
1347	  RUBINMIPS and DYNRUBIN compressors. Say 'N' if unsure.
1348
1349choice
1350	prompt "JFFS2 default compression mode" if JFFS2_COMPRESSION_OPTIONS
1351	default JFFS2_CMODE_PRIORITY
1352	depends on JFFS2_FS
1353	help
1354	  You can set here the default compression mode of JFFS2 from
1355	  the available compression modes. Don't touch if unsure.
1356
1357config JFFS2_CMODE_NONE
1358	bool "no compression"
1359	help
1360	  Uses no compression.
1361
1362config JFFS2_CMODE_PRIORITY
1363	bool "priority"
1364	help
1365	  Tries the compressors in a predefined order and chooses the first
1366	  successful one.
1367
1368config JFFS2_CMODE_SIZE
1369	bool "size (EXPERIMENTAL)"
1370	help
1371	  Tries all compressors and chooses the one which has the smallest
1372	  result.
1373
1374config JFFS2_CMODE_FAVOURLZO
1375	bool "Favour LZO"
1376	help
1377	  Tries all compressors and chooses the one which has the smallest
1378	  result but gives some preference to LZO (which has faster
1379	  decompression) at the expense of size.
1380
1381endchoice
1382
1383config CRAMFS
1384	tristate "Compressed ROM file system support (cramfs)"
1385	depends on BLOCK
1386	select ZLIB_INFLATE
1387	help
1388	  Saying Y here includes support for CramFs (Compressed ROM File
1389	  System).  CramFs is designed to be a simple, small, and compressed
1390	  file system for ROM based embedded systems.  CramFs is read-only,
1391	  limited to 256MB file systems (with 16MB files), and doesn't support
1392	  16/32 bits uid/gid, hard links and timestamps.
1393
1394	  See <file:Documentation/filesystems/cramfs.txt> and
1395	  <file:fs/cramfs/README> for further information.
1396
1397	  To compile this as a module, choose M here: the module will be called
1398	  cramfs.  Note that the root file system (the one containing the
1399	  directory /) cannot be compiled as a module.
1400
1401	  If unsure, say N.
1402
1403config VXFS_FS
1404	tristate "FreeVxFS file system support (VERITAS VxFS(TM) compatible)"
1405	depends on BLOCK
1406	help
1407	  FreeVxFS is a file system driver that support the VERITAS VxFS(TM)
1408	  file system format.  VERITAS VxFS(TM) is the standard file system
1409	  of SCO UnixWare (and possibly others) and optionally available
1410	  for Sunsoft Solaris, HP-UX and many other operating systems.
1411	  Currently only readonly access is supported.
1412
1413	  NOTE: the file system type as used by mount(1), mount(2) and
1414	  fstab(5) is 'vxfs' as it describes the file system format, not
1415	  the actual driver.
1416
1417	  To compile this as a module, choose M here: the module will be
1418	  called freevxfs.  If unsure, say N.
1419
1420
1421config HPFS_FS
1422	tristate "OS/2 HPFS file system support"
1423	depends on BLOCK
1424	help
1425	  OS/2 is IBM's operating system for PC's, the same as Warp, and HPFS
1426	  is the file system used for organizing files on OS/2 hard disk
1427	  partitions. Say Y if you want to be able to read files from and
1428	  write files to an OS/2 HPFS partition on your hard drive. OS/2
1429	  floppies however are in regular MSDOS format, so you don't need this
1430	  option in order to be able to read them. Read
1431	  <file:Documentation/filesystems/hpfs.txt>.
1432
1433	  To compile this file system support as a module, choose M here: the
1434	  module will be called hpfs.  If unsure, say N.
1435
1436
1437
1438config QNX4FS_FS
1439	tristate "QNX4 file system support (read only)"
1440	depends on BLOCK
1441	help
1442	  This is the file system used by the real-time operating systems
1443	  QNX 4 and QNX 6 (the latter is also called QNX RTP).
1444	  Further information is available at <http://www.qnx.com/>.
1445	  Say Y if you intend to mount QNX hard disks or floppies.
1446	  Unless you say Y to "QNX4FS read-write support" below, you will
1447	  only be able to read these file systems.
1448
1449	  To compile this file system support as a module, choose M here: the
1450	  module will be called qnx4.
1451
1452	  If you don't know whether you need it, then you don't need it:
1453	  answer N.
1454
1455config QNX4FS_RW
1456	bool "QNX4FS write support (DANGEROUS)"
1457	depends on QNX4FS_FS && EXPERIMENTAL && BROKEN
1458	help
1459	  Say Y if you want to test write support for QNX4 file systems.
1460
1461	  It's currently broken, so for now:
1462	  answer N.
1463
1464
1465
1466config SYSV_FS
1467	tristate "System V/Xenix/V7/Coherent file system support"
1468	depends on BLOCK
1469	help
1470	  SCO, Xenix and Coherent are commercial Unix systems for Intel
1471	  machines, and Version 7 was used on the DEC PDP-11. Saying Y
1472	  here would allow you to read from their floppies and hard disk
1473	  partitions.
1474
1475	  If you have floppies or hard disk partitions like that, it is likely
1476	  that they contain binaries from those other Unix systems; in order
1477	  to run these binaries, you will want to install linux-abi which is
1478	  a set of kernel modules that lets you run SCO, Xenix, Wyse,
1479	  UnixWare, Dell Unix and System V programs under Linux.  It is
1480	  available via FTP (user: ftp) from
1481	  <ftp://ftp.openlinux.org/pub/people/hch/linux-abi/>).
1482	  NOTE: that will work only for binaries from Intel-based systems;
1483	  PDP ones will have to wait until somebody ports Linux to -11 ;-)
1484
1485	  If you only intend to mount files from some other Unix over the
1486	  network using NFS, you don't need the System V file system support
1487	  (but you need NFS file system support obviously).
1488
1489	  Note that this option is generally not needed for floppies, since a
1490	  good portable way to transport files and directories between unixes
1491	  (and even other operating systems) is given by the tar program ("man
1492	  tar" or preferably "info tar").  Note also that this option has
1493	  nothing whatsoever to do with the option "System V IPC". Read about
1494	  the System V file system in
1495	  <file:Documentation/filesystems/sysv-fs.txt>.
1496	  Saying Y here will enlarge your kernel by about 27 KB.
1497
1498	  To compile this as a module, choose M here: the module will be called
1499	  sysv.
1500
1501	  If you haven't heard about all of this before, it's safe to say N.
1502
1503
1504
1505config UFS_FS
1506	tristate "UFS file system support (read only)"
1507	depends on BLOCK
1508	help
1509	  BSD and derivate versions of Unix (such as SunOS, FreeBSD, NetBSD,
1510	  OpenBSD and NeXTstep) use a file system called UFS. Some System V
1511	  Unixes can create and mount hard disk partitions and diskettes using
1512	  this file system as well. Saying Y here will allow you to read from
1513	  these partitions; if you also want to write to them, say Y to the
1514	  experimental "UFS file system write support", below. Please read the
1515	  file <file:Documentation/filesystems/ufs.txt> for more information.
1516
1517          The recently released UFS2 variant (used in FreeBSD 5.x) is
1518          READ-ONLY supported.
1519
1520	  If you only intend to mount files from some other Unix over the
1521	  network using NFS, you don't need the UFS file system support (but
1522	  you need NFS file system support obviously).
1523
1524	  Note that this option is generally not needed for floppies, since a
1525	  good portable way to transport files and directories between unixes
1526	  (and even other operating systems) is given by the tar program ("man
1527	  tar" or preferably "info tar").
1528
1529	  When accessing NeXTstep files, you may need to convert them from the
1530	  NeXT character set to the Latin1 character set; use the program
1531	  recode ("info recode") for this purpose.
1532
1533	  To compile the UFS file system support as a module, choose M here: the
1534	  module will be called ufs.
1535
1536	  If you haven't heard about all of this before, it's safe to say N.
1537
1538config UFS_FS_WRITE
1539	bool "UFS file system write support (DANGEROUS)"
1540	depends on UFS_FS && EXPERIMENTAL
1541	help
1542	  Say Y here if you want to try writing to UFS partitions. This is
1543	  experimental, so you should back up your UFS partitions beforehand.
1544
1545config UFS_DEBUG
1546	bool "UFS debugging"
1547	depends on UFS_FS
1548	help
1549	  If you are experiencing any problems with the UFS filesystem, say
1550	  Y here.  This will result in _many_ additional debugging messages to be
1551	  written to the system log.
1552
1553endmenu
1554
1555menuconfig NETWORK_FILESYSTEMS
1556	bool "Network File Systems"
1557	default y
1558	depends on NET
1559	---help---
1560	  Say Y here to get to see options for network filesystems and
1561	  filesystem-related networking code, such as NFS daemon and
1562	  RPCSEC security modules.
1563	  This option alone does not add any kernel code.
1564
1565	  If you say N, all options in this submenu will be skipped and
1566	  disabled; if unsure, say Y here.
1567
1568if NETWORK_FILESYSTEMS
1569
1570config NFS_FS
1571	tristate "NFS file system support"
1572	depends on INET
1573	select LOCKD
1574	select SUNRPC
1575	select NFS_ACL_SUPPORT if NFS_V3_ACL
1576	help
1577	  If you are connected to some other (usually local) Unix computer
1578	  (using SLIP, PLIP, PPP or Ethernet) and want to mount files residing
1579	  on that computer (the NFS server) using the Network File Sharing
1580	  protocol, say Y. "Mounting files" means that the client can access
1581	  the files with usual UNIX commands as if they were sitting on the
1582	  client's hard disk. For this to work, the server must run the
1583	  programs nfsd and mountd (but does not need to have NFS file system
1584	  support enabled in its kernel). NFS is explained in the Network
1585	  Administrator's Guide, available from
1586	  <http://www.tldp.org/docs.html#guide>, on its man page: "man
1587	  nfs", and in the NFS-HOWTO.
1588
1589	  A superior but less widely used alternative to NFS is provided by
1590	  the Coda file system; see "Coda file system support" below.
1591
1592	  If you say Y here, you should have said Y to TCP/IP networking also.
1593	  This option would enlarge your kernel by about 27 KB.
1594
1595	  To compile this file system support as a module, choose M here: the
1596	  module will be called nfs.
1597
1598	  If you are configuring a diskless machine which will mount its root
1599	  file system over NFS at boot time, say Y here and to "Kernel
1600	  level IP autoconfiguration" above and to "Root file system on NFS"
1601	  below. You cannot compile this driver as a module in this case.
1602	  There are two packages designed for booting diskless machines over
1603	  the net: netboot, available from
1604	  <http://ftp1.sourceforge.net/netboot/>, and Etherboot,
1605	  available from <http://ftp1.sourceforge.net/etherboot/>.
1606
1607	  If you don't know what all this is about, say N.
1608
1609config NFS_V3
1610	bool "Provide NFSv3 client support"
1611	depends on NFS_FS
1612	help
1613	  Say Y here if you want your NFS client to be able to speak version
1614	  3 of the NFS protocol.
1615
1616	  If unsure, say Y.
1617
1618config NFS_V3_ACL
1619	bool "Provide client support for the NFSv3 ACL protocol extension"
1620	depends on NFS_V3
1621	help
1622	  Implement the NFSv3 ACL protocol extension for manipulating POSIX
1623	  Access Control Lists.  The server should also be compiled with
1624	  the NFSv3 ACL protocol extension; see the CONFIG_NFSD_V3_ACL option.
1625
1626	  If unsure, say N.
1627
1628config NFS_V4
1629	bool "Provide NFSv4 client support (EXPERIMENTAL)"
1630	depends on NFS_FS && EXPERIMENTAL
1631	select RPCSEC_GSS_KRB5
1632	help
1633	  Say Y here if you want your NFS client to be able to speak the newer
1634	  version 4 of the NFS protocol.
1635
1636	  Note: Requires auxiliary userspace daemons which may be found on
1637		http://www.citi.umich.edu/projects/nfsv4/
1638
1639	  If unsure, say N.
1640
1641config NFS_DIRECTIO
1642	bool "Allow direct I/O on NFS files"
1643	depends on NFS_FS
1644	help
1645	  This option enables applications to perform uncached I/O on files
1646	  in NFS file systems using the O_DIRECT open() flag.  When O_DIRECT
1647	  is set for a file, its data is not cached in the system's page
1648	  cache.  Data is moved to and from user-level application buffers
1649	  directly.  Unlike local disk-based file systems, NFS O_DIRECT has
1650	  no alignment restrictions.
1651
1652	  Unless your program is designed to use O_DIRECT properly, you are
1653	  much better off allowing the NFS client to manage data caching for
1654	  you.  Misusing O_DIRECT can cause poor server performance or network
1655	  storms.  This kernel build option defaults OFF to avoid exposing
1656	  system administrators unwittingly to a potentially hazardous
1657	  feature.
1658
1659	  For more details on NFS O_DIRECT, see fs/nfs/direct.c.
1660
1661	  If unsure, say N.  This reduces the size of the NFS client, and
1662	  causes open() to return EINVAL if a file residing in NFS is
1663	  opened with the O_DIRECT flag.
1664
1665config NFSD
1666	tristate "NFS server support"
1667	depends on INET
1668	select LOCKD
1669	select SUNRPC
1670	select EXPORTFS
1671	select NFSD_V2_ACL if NFSD_V3_ACL
1672	select NFS_ACL_SUPPORT if NFSD_V2_ACL
1673	select NFSD_TCP if NFSD_V4
1674	select CRYPTO_MD5 if NFSD_V4
1675	select CRYPTO if NFSD_V4
1676	select FS_POSIX_ACL if NFSD_V4
1677	select PROC_FS if NFSD_V4
1678	select PROC_FS if SUNRPC_GSS
1679	help
1680	  If you want your Linux box to act as an NFS *server*, so that other
1681	  computers on your local network which support NFS can access certain
1682	  directories on your box transparently, you have two options: you can
1683	  use the self-contained user space program nfsd, in which case you
1684	  should say N here, or you can say Y and use the kernel based NFS
1685	  server. The advantage of the kernel based solution is that it is
1686	  faster.
1687
1688	  In either case, you will need support software; the respective
1689	  locations are given in the file <file:Documentation/Changes> in the
1690	  NFS section.
1691
1692	  If you say Y here, you will get support for version 2 of the NFS
1693	  protocol (NFSv2). If you also want NFSv3, say Y to the next question
1694	  as well.
1695
1696	  Please read the NFS-HOWTO, available from
1697	  <http://www.tldp.org/docs.html#howto>.
1698
1699	  To compile the NFS server support as a module, choose M here: the
1700	  module will be called nfsd.  If unsure, say N.
1701
1702config NFSD_V2_ACL
1703	bool
1704	depends on NFSD
1705
1706config NFSD_V3
1707	bool "Provide NFSv3 server support"
1708	depends on NFSD
1709	help
1710	  If you would like to include the NFSv3 server as well as the NFSv2
1711	  server, say Y here.  If unsure, say Y.
1712
1713config NFSD_V3_ACL
1714	bool "Provide server support for the NFSv3 ACL protocol extension"
1715	depends on NFSD_V3
1716	help
1717	  Implement the NFSv3 ACL protocol extension for manipulating POSIX
1718	  Access Control Lists on exported file systems. NFS clients should
1719	  be compiled with the NFSv3 ACL protocol extension; see the
1720	  CONFIG_NFS_V3_ACL option.  If unsure, say N.
1721
1722config NFSD_V4
1723	bool "Provide NFSv4 server support (EXPERIMENTAL)"
1724	depends on NFSD && NFSD_V3 && EXPERIMENTAL
1725	select RPCSEC_GSS_KRB5
1726	help
1727	  If you would like to include the NFSv4 server as well as the NFSv2
1728	  and NFSv3 servers, say Y here.  This feature is experimental, and
1729	  should only be used if you are interested in helping to test NFSv4.
1730	  If unsure, say N.
1731
1732config NFSD_TCP
1733	bool "Provide NFS server over TCP support"
1734	depends on NFSD
1735	default y
1736	help
1737	  If you want your NFS server to support TCP connections, say Y here.
1738	  TCP connections usually perform better than the default UDP when
1739	  the network is lossy or congested.  If unsure, say Y.
1740
1741config ROOT_NFS
1742	bool "Root file system on NFS"
1743	depends on NFS_FS=y && IP_PNP
1744	help
1745	  If you want your Linux box to mount its whole root file system (the
1746	  one containing the directory /) from some other computer over the
1747	  net via NFS (presumably because your box doesn't have a hard disk),
1748	  say Y. Read <file:Documentation/nfsroot.txt> for details. It is
1749	  likely that in this case, you also want to say Y to "Kernel level IP
1750	  autoconfiguration" so that your box can discover its network address
1751	  at boot time.
1752
1753	  Most people say N here.
1754
1755config LOCKD
1756	tristate
1757
1758config LOCKD_V4
1759	bool
1760	depends on NFSD_V3 || NFS_V3
1761	default y
1762
1763config EXPORTFS
1764	tristate
1765
1766config NFS_ACL_SUPPORT
1767	tristate
1768	select FS_POSIX_ACL
1769
1770config NFS_COMMON
1771	bool
1772	depends on NFSD || NFS_FS
1773	default y
1774
1775config SUNRPC
1776	tristate
1777
1778config SUNRPC_GSS
1779	tristate
1780
1781config SUNRPC_XPRT_RDMA
1782	tristate "RDMA transport for sunrpc (EXPERIMENTAL)"
1783	depends on SUNRPC && INFINIBAND && EXPERIMENTAL
1784	default m
1785	help
1786	  Adds a client RPC transport for supporting kernel NFS over RDMA
1787	  mounts, including Infiniband and iWARP. Experimental.
1788
1789config SUNRPC_BIND34
1790	bool "Support for rpcbind versions 3 & 4 (EXPERIMENTAL)"
1791	depends on SUNRPC && EXPERIMENTAL
1792	help
1793	  Provides kernel support for querying rpcbind servers via versions 3
1794	  and 4 of the rpcbind protocol.  The kernel automatically falls back
1795	  to version 2 if a remote rpcbind service does not support versions
1796	  3 or 4.
1797
1798	  If unsure, say N to get traditional behavior (version 2 rpcbind
1799	  requests only).
1800
1801config RPCSEC_GSS_KRB5
1802	tristate "Secure RPC: Kerberos V mechanism (EXPERIMENTAL)"
1803	depends on SUNRPC && EXPERIMENTAL
1804	select SUNRPC_GSS
1805	select CRYPTO
1806	select CRYPTO_MD5
1807	select CRYPTO_DES
1808	select CRYPTO_CBC
1809	help
1810	  Provides for secure RPC calls by means of a gss-api
1811	  mechanism based on Kerberos V5. This is required for
1812	  NFSv4.
1813
1814	  Note: Requires an auxiliary userspace daemon which may be found on
1815		http://www.citi.umich.edu/projects/nfsv4/
1816
1817	  If unsure, say N.
1818
1819config RPCSEC_GSS_SPKM3
1820	tristate "Secure RPC: SPKM3 mechanism (EXPERIMENTAL)"
1821	depends on SUNRPC && EXPERIMENTAL
1822	select SUNRPC_GSS
1823	select CRYPTO
1824	select CRYPTO_MD5
1825	select CRYPTO_DES
1826	select CRYPTO_CAST5
1827	select CRYPTO_CBC
1828	help
1829	  Provides for secure RPC calls by means of a gss-api
1830	  mechanism based on the SPKM3 public-key mechanism.
1831
1832	  Note: Requires an auxiliary userspace daemon which may be found on
1833	  	http://www.citi.umich.edu/projects/nfsv4/
1834
1835	  If unsure, say N.
1836
1837config SMB_FS
1838	tristate "SMB file system support (to mount Windows shares etc.)"
1839	depends on INET
1840	select NLS
1841	help
1842	  SMB (Server Message Block) is the protocol Windows for Workgroups
1843	  (WfW), Windows 95/98, Windows NT and OS/2 Lan Manager use to share
1844	  files and printers over local networks.  Saying Y here allows you to
1845	  mount their file systems (often called "shares" in this context) and
1846	  access them just like any other Unix directory.  Currently, this
1847	  works only if the Windows machines use TCP/IP as the underlying
1848	  transport protocol, and not NetBEUI.  For details, read
1849	  <file:Documentation/filesystems/smbfs.txt> and the SMB-HOWTO,
1850	  available from <http://www.tldp.org/docs.html#howto>.
1851
1852	  Note: if you just want your box to act as an SMB *server* and make
1853	  files and printing services available to Windows clients (which need
1854	  to have a TCP/IP stack), you don't need to say Y here; you can use
1855	  the program SAMBA (available from <ftp://ftp.samba.org/pub/samba/>)
1856	  for that.
1857
1858	  General information about how to connect Linux, Windows machines and
1859	  Macs is on the WWW at <http://www.eats.com/linux_mac_win.html>.
1860
1861	  To compile the SMB support as a module, choose M here: the module will
1862	  be called smbfs.  Most people say N, however.
1863
1864config SMB_NLS_DEFAULT
1865	bool "Use a default NLS"
1866	depends on SMB_FS
1867	help
1868	  Enabling this will make smbfs use nls translations by default. You
1869	  need to specify the local charset (CONFIG_NLS_DEFAULT) in the nls
1870	  settings and you need to give the default nls for the SMB server as
1871	  CONFIG_SMB_NLS_REMOTE.
1872
1873	  The nls settings can be changed at mount time, if your smbmount
1874	  supports that, using the codepage and iocharset parameters.
1875
1876	  smbmount from samba 2.2.0 or later supports this.
1877
1878config SMB_NLS_REMOTE
1879	string "Default Remote NLS Option"
1880	depends on SMB_NLS_DEFAULT
1881	default "cp437"
1882	help
1883	  This setting allows you to specify a default value for which
1884	  codepage the server uses. If this field is left blank no
1885	  translations will be done by default. The local codepage/charset
1886	  default to CONFIG_NLS_DEFAULT.
1887
1888	  The nls settings can be changed at mount time, if your smbmount
1889	  supports that, using the codepage and iocharset parameters.
1890
1891	  smbmount from samba 2.2.0 or later supports this.
1892
1893config CIFS
1894	tristate "CIFS support (advanced network filesystem for Samba, Window and other CIFS compliant servers)"
1895	depends on INET
1896	select NLS
1897	help
1898	  This is the client VFS module for the Common Internet File System
1899	  (CIFS) protocol which is the successor to the Server Message Block
1900	  (SMB) protocol, the native file sharing mechanism for most early
1901	  PC operating systems.  The CIFS protocol is fully supported by
1902	  file servers such as Windows 2000 (including Windows 2003, NT 4
1903	  and Windows XP) as well by Samba (which provides excellent CIFS
1904	  server support for Linux and many other operating systems). Limited
1905	  support for OS/2 and Windows ME and similar servers is provided as
1906	  well.
1907
1908	  The cifs module provides an advanced network file system
1909	  client for mounting to CIFS compliant servers.  It includes
1910	  support for DFS (hierarchical name space), secure per-user
1911	  session establishment via Kerberos or NTLM or NTLMv2,
1912	  safe distributed caching (oplock), optional packet
1913	  signing, Unicode and other internationalization improvements.
1914	  If you need to mount to Samba or Windows from this machine, say Y.
1915
1916config CIFS_STATS
1917        bool "CIFS statistics"
1918        depends on CIFS
1919        help
1920          Enabling this option will cause statistics for each server share
1921	  mounted by the cifs client to be displayed in /proc/fs/cifs/Stats
1922
1923config CIFS_STATS2
1924	bool "Extended statistics"
1925	depends on CIFS_STATS
1926	help
1927	  Enabling this option will allow more detailed statistics on SMB
1928	  request timing to be displayed in /proc/fs/cifs/DebugData and also
1929	  allow optional logging of slow responses to dmesg (depending on the
1930	  value of /proc/fs/cifs/cifsFYI, see fs/cifs/README for more details).
1931	  These additional statistics may have a minor effect on performance
1932	  and memory utilization.
1933
1934	  Unless you are a developer or are doing network performance analysis
1935	  or tuning, say N.
1936
1937config CIFS_WEAK_PW_HASH
1938	bool "Support legacy servers which use weaker LANMAN security"
1939	depends on CIFS
1940	help
1941	  Modern CIFS servers including Samba and most Windows versions
1942	  (since 1997) support stronger NTLM (and even NTLMv2 and Kerberos)
1943	  security mechanisms. These hash the password more securely
1944	  than the mechanisms used in the older LANMAN version of the
1945	  SMB protocol but LANMAN based authentication is needed to
1946	  establish sessions with some old SMB servers.
1947
1948	  Enabling this option allows the cifs module to mount to older
1949	  LANMAN based servers such as OS/2 and Windows 95, but such
1950	  mounts may be less secure than mounts using NTLM or more recent
1951	  security mechanisms if you are on a public network.  Unless you
1952	  have a need to access old SMB servers (and are on a private
1953	  network) you probably want to say N.  Even if this support
1954	  is enabled in the kernel build, LANMAN authentication will not be
1955	  used automatically. At runtime LANMAN mounts are disabled but
1956	  can be set to required (or optional) either in
1957	  /proc/fs/cifs (see fs/cifs/README for more detail) or via an
1958	  option on the mount command. This support is disabled by
1959	  default in order to reduce the possibility of a downgrade
1960	  attack.
1961
1962	  If unsure, say N.
1963
1964config CIFS_XATTR
1965        bool "CIFS extended attributes"
1966        depends on CIFS
1967        help
1968          Extended attributes are name:value pairs associated with inodes by
1969          the kernel or by users (see the attr(5) manual page, or visit
1970          <http://acl.bestbits.at/> for details).  CIFS maps the name of
1971          extended attributes beginning with the user namespace prefix
1972          to SMB/CIFS EAs. EAs are stored on Windows servers without the
1973          user namespace prefix, but their names are seen by Linux cifs clients
1974          prefaced by the user namespace prefix. The system namespace
1975          (used by some filesystems to store ACLs) is not supported at
1976          this time.
1977
1978          If unsure, say N.
1979
1980config CIFS_POSIX
1981        bool "CIFS POSIX Extensions"
1982        depends on CIFS_XATTR
1983        help
1984          Enabling this option will cause the cifs client to attempt to
1985	  negotiate a newer dialect with servers, such as Samba 3.0.5
1986	  or later, that optionally can handle more POSIX like (rather
1987	  than Windows like) file behavior.  It also enables
1988	  support for POSIX ACLs (getfacl and setfacl) to servers
1989	  (such as Samba 3.10 and later) which can negotiate
1990	  CIFS POSIX ACL support.  If unsure, say N.
1991
1992config CIFS_DEBUG2
1993	bool "Enable additional CIFS debugging routines"
1994	depends on CIFS
1995	help
1996	   Enabling this option adds a few more debugging routines
1997	   to the cifs code which slightly increases the size of
1998	   the cifs module and can cause additional logging of debug
1999	   messages in some error paths, slowing performance. This
2000	   option can be turned off unless you are debugging
2001	   cifs problems.  If unsure, say N.
2002
2003config CIFS_EXPERIMENTAL
2004	  bool "CIFS Experimental Features (EXPERIMENTAL)"
2005	  depends on CIFS && EXPERIMENTAL
2006	  help
2007	    Enables cifs features under testing. These features are
2008	    experimental and currently include DFS support and directory
2009	    change notification ie fcntl(F_DNOTIFY), as well as the upcall
2010	    mechanism which will be used for Kerberos session negotiation
2011	    and uid remapping.  Some of these features also may depend on
2012	    setting a value of 1 to the pseudo-file /proc/fs/cifs/Experimental
2013	    (which is disabled by default). See the file fs/cifs/README
2014	    for more details.  If unsure, say N.
2015
2016config CIFS_UPCALL
2017	  bool "Kerberos/SPNEGO advanced session setup (EXPERIMENTAL)"
2018	  depends on CIFS_EXPERIMENTAL
2019	  depends on KEYS
2020	  help
2021	    Enables an upcall mechanism for CIFS which accesses
2022	    userspace helper utilities to provide SPNEGO packaged (RFC 4178)
2023	    Kerberos tickets which are needed to mount to certain secure servers
2024	    (for which more secure Kerberos authentication is required). If
2025	    unsure, say N.
2026
2027config CIFS_DFS_UPCALL
2028	  bool "DFS feature support (EXPERIMENTAL)"
2029	  depends on CIFS_EXPERIMENTAL
2030	  depends on KEYS
2031	  help
2032	    Enables an upcall mechanism for CIFS which contacts userspace
2033	    helper utilities to provide server name resolution (host names to
2034	    IP addresses) which is needed for implicit mounts of DFS junction
2035	    points. If unsure, say N.
2036
2037config NCP_FS
2038	tristate "NCP file system support (to mount NetWare volumes)"
2039	depends on IPX!=n || INET
2040	help
2041	  NCP (NetWare Core Protocol) is a protocol that runs over IPX and is
2042	  used by Novell NetWare clients to talk to file servers.  It is to
2043	  IPX what NFS is to TCP/IP, if that helps.  Saying Y here allows you
2044	  to mount NetWare file server volumes and to access them just like
2045	  any other Unix directory.  For details, please read the file
2046	  <file:Documentation/filesystems/ncpfs.txt> in the kernel source and
2047	  the IPX-HOWTO from <http://www.tldp.org/docs.html#howto>.
2048
2049	  You do not have to say Y here if you want your Linux box to act as a
2050	  file *server* for Novell NetWare clients.
2051
2052	  General information about how to connect Linux, Windows machines and
2053	  Macs is on the WWW at <http://www.eats.com/linux_mac_win.html>.
2054
2055	  To compile this as a module, choose M here: the module will be called
2056	  ncpfs.  Say N unless you are connected to a Novell network.
2057
2058source "fs/ncpfs/Kconfig"
2059
2060config CODA_FS
2061	tristate "Coda file system support (advanced network fs)"
2062	depends on INET
2063	help
2064	  Coda is an advanced network file system, similar to NFS in that it
2065	  enables you to mount file systems of a remote server and access them
2066	  with regular Unix commands as if they were sitting on your hard
2067	  disk.  Coda has several advantages over NFS: support for
2068	  disconnected operation (e.g. for laptops), read/write server
2069	  replication, security model for authentication and encryption,
2070	  persistent client caches and write back caching.
2071
2072	  If you say Y here, your Linux box will be able to act as a Coda
2073	  *client*.  You will need user level code as well, both for the
2074	  client and server.  Servers are currently user level, i.e. they need
2075	  no kernel support.  Please read
2076	  <file:Documentation/filesystems/coda.txt> and check out the Coda
2077	  home page <http://www.coda.cs.cmu.edu/>.
2078
2079	  To compile the coda client support as a module, choose M here: the
2080	  module will be called coda.
2081
2082config CODA_FS_OLD_API
2083	bool "Use 96-bit Coda file identifiers"
2084	depends on CODA_FS
2085	help
2086	  A new kernel-userspace API had to be introduced for Coda v6.0
2087	  to support larger 128-bit file identifiers as needed by the
2088	  new realms implementation.
2089
2090	  However this new API is not backward compatible with older
2091	  clients. If you really need to run the old Coda userspace
2092	  cache manager then say Y.
2093
2094	  For most cases you probably want to say N.
2095
2096config AFS_FS
2097	tristate "Andrew File System support (AFS) (EXPERIMENTAL)"
2098	depends on INET && EXPERIMENTAL
2099	select AF_RXRPC
2100	help
2101	  If you say Y here, you will get an experimental Andrew File System
2102	  driver. It currently only supports unsecured read-only AFS access.
2103
2104	  See <file:Documentation/filesystems/afs.txt> for more information.
2105
2106	  If unsure, say N.
2107
2108config AFS_DEBUG
2109	bool "AFS dynamic debugging"
2110	depends on AFS_FS
2111	help
2112	  Say Y here to make runtime controllable debugging messages appear.
2113
2114	  See <file:Documentation/filesystems/afs.txt> for more information.
2115
2116	  If unsure, say N.
2117
2118config 9P_FS
2119	tristate "Plan 9 Resource Sharing Support (9P2000) (Experimental)"
2120	depends on INET && NET_9P && EXPERIMENTAL
2121	help
2122	  If you say Y here, you will get experimental support for
2123	  Plan 9 resource sharing via the 9P2000 protocol.
2124
2125	  See <http://v9fs.sf.net> for more information.
2126
2127	  If unsure, say N.
2128
2129endif # NETWORK_FILESYSTEMS
2130
2131if BLOCK
2132menu "Partition Types"
2133
2134source "fs/partitions/Kconfig"
2135
2136endmenu
2137endif
2138
2139source "fs/nls/Kconfig"
2140source "fs/dlm/Kconfig"
2141
2142endmenu
2143