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Linus Torvalds1da177e2005-04-16 15:20:36 -07001#
2# File system configuration
3#
4
5menu "File systems"
6
David Howells93614012006-09-30 20:45:40 +02007if BLOCK
8
Linus Torvalds1da177e2005-04-16 15:20:36 -07009config 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. Be aware however that the file system
16 of your root partition (the one containing the directory /) cannot
17 be compiled as a module, and so this could be dangerous.
18
19 If unsure, say Y.
20
21config EXT2_FS_XATTR
22 bool "Ext2 extended attributes"
23 depends on EXT2_FS
24 help
25 Extended attributes are name:value pairs associated with inodes by
26 the kernel or by users (see the attr(5) manual page, or visit
27 <http://acl.bestbits.at/> for details).
28
29 If unsure, say N.
30
31config EXT2_FS_POSIX_ACL
32 bool "Ext2 POSIX Access Control Lists"
33 depends on EXT2_FS_XATTR
Andreas Gruenbacherb84c2152005-07-07 17:56:57 -070034 select FS_POSIX_ACL
Linus Torvalds1da177e2005-04-16 15:20:36 -070035 help
36 Posix Access Control Lists (ACLs) support permissions for users and
37 groups beyond the owner/group/world scheme.
38
39 To learn more about Access Control Lists, visit the Posix ACLs for
40 Linux website <http://acl.bestbits.at/>.
41
42 If you don't know what Access Control Lists are, say N
43
44config EXT2_FS_SECURITY
45 bool "Ext2 Security Labels"
46 depends on EXT2_FS_XATTR
47 help
48 Security labels support alternative access control models
49 implemented by security modules like SELinux. This option
50 enables an extended attribute handler for file security
51 labels in the ext2 filesystem.
52
53 If you are not using a security module that requires using
54 extended attributes for file security labels, say N.
55
Carsten Otte6d791252005-06-23 22:05:26 -070056config EXT2_FS_XIP
57 bool "Ext2 execute in place support"
Al Viro0c426f22006-06-23 02:04:08 -070058 depends on EXT2_FS && MMU
Carsten Otte6d791252005-06-23 22:05:26 -070059 help
60 Execute in place can be used on memory-backed block devices. If you
61 enable this option, you can select to mount block devices which are
62 capable of this feature without using the page cache.
63
64 If you do not use a block device that is capable of using this,
65 or if unsure, say N.
66
67config FS_XIP
68# execute in place
69 bool
70 depends on EXT2_FS_XIP
71 default y
72
Linus Torvalds1da177e2005-04-16 15:20:36 -070073config EXT3_FS
74 tristate "Ext3 journalling file system support"
Mark Fashehb4e40a52005-12-15 14:31:24 -080075 select JBD
Linus Torvalds1da177e2005-04-16 15:20:36 -070076 help
Matt LaPlantecc2e2762006-10-03 22:22:29 +020077 This is the journalling version of the Second extended file system
Linus Torvalds1da177e2005-04-16 15:20:36 -070078 (often called ext3), the de facto standard Linux file system
79 (method to organize files on a storage device) for hard disks.
80
Matt LaPlantecc2e2762006-10-03 22:22:29 +020081 The journalling code included in this driver means you do not have
Linus Torvalds1da177e2005-04-16 15:20:36 -070082 to run e2fsck (file system checker) on your file systems after a
83 crash. The journal keeps track of any changes that were being made
84 at the time the system crashed, and can ensure that your file system
85 is consistent without the need for a lengthy check.
86
87 Other than adding the journal to the file system, the on-disk format
88 of ext3 is identical to ext2. It is possible to freely switch
89 between using the ext3 driver and the ext2 driver, as long as the
90 file system has been cleanly unmounted, or e2fsck is run on the file
91 system.
92
93 To add a journal on an existing ext2 file system or change the
94 behavior of ext3 file systems, you can use the tune2fs utility ("man
95 tune2fs"). To modify attributes of files and directories on ext3
96 file systems, use chattr ("man chattr"). You need to be using
97 e2fsprogs version 1.20 or later in order to create ext3 journals
98 (available at <http://sourceforge.net/projects/e2fsprogs/>).
99
100 To compile this file system support as a module, choose M here: the
101 module will be called ext3. Be aware however that the file system
102 of your root partition (the one containing the directory /) cannot
103 be compiled as a module, and so this may be dangerous.
104
105config EXT3_FS_XATTR
106 bool "Ext3 extended attributes"
107 depends on EXT3_FS
108 default y
109 help
110 Extended attributes are name:value pairs associated with inodes by
111 the kernel or by users (see the attr(5) manual page, or visit
112 <http://acl.bestbits.at/> for details).
113
114 If unsure, say N.
115
116 You need this for POSIX ACL support on ext3.
117
118config EXT3_FS_POSIX_ACL
119 bool "Ext3 POSIX Access Control Lists"
120 depends on EXT3_FS_XATTR
Andreas Gruenbacherb84c2152005-07-07 17:56:57 -0700121 select FS_POSIX_ACL
Linus Torvalds1da177e2005-04-16 15:20:36 -0700122 help
123 Posix Access Control Lists (ACLs) support permissions for users and
124 groups beyond the owner/group/world scheme.
125
126 To learn more about Access Control Lists, visit the Posix ACLs for
127 Linux website <http://acl.bestbits.at/>.
128
129 If you don't know what Access Control Lists are, say N
130
131config EXT3_FS_SECURITY
132 bool "Ext3 Security Labels"
133 depends on EXT3_FS_XATTR
134 help
135 Security labels support alternative access control models
136 implemented by security modules like SELinux. This option
137 enables an extended attribute handler for file security
138 labels in the ext3 filesystem.
139
140 If you are not using a security module that requires using
141 extended attributes for file security labels, say N.
142
Mingming Cao02ea2102006-10-11 01:20:56 -0700143config EXT4DEV_FS
144 tristate "Ext4dev/ext4 extended fs support development (EXPERIMENTAL)"
145 depends on EXPERIMENTAL
Mingming Caodab291a2006-10-11 01:21:01 -0700146 select JBD2
147 help
Mingming Cao02ea2102006-10-11 01:20:56 -0700148 Ext4dev is a predecessor filesystem of the next generation
149 extended fs ext4, based on ext3 filesystem code. It will be
150 renamed ext4 fs later, once ext4dev is mature and stabilized.
151
Mingming Caodab291a2006-10-11 01:21:01 -0700152 Unlike the change from ext2 filesystem to ext3 filesystem,
153 the on-disk format of ext4dev is not the same as ext3 any more:
Mingming Cao02ea2102006-10-11 01:20:56 -0700154 it is based on extent maps and it supports 48-bit physical block
Mingming Caodab291a2006-10-11 01:21:01 -0700155 numbers. These combined on-disk format changes will allow
Mingming Cao02ea2102006-10-11 01:20:56 -0700156 ext4dev/ext4 to handle more than 16 TB filesystem volumes --
157 a hard limit that ext3 cannot overcome without changing the
Mingming Caodab291a2006-10-11 01:21:01 -0700158 on-disk format.
Mingming Cao02ea2102006-10-11 01:20:56 -0700159
160 Other than extent maps and 48-bit block numbers, ext4dev also is
Mingming Caodab291a2006-10-11 01:21:01 -0700161 likely to have other new features such as persistent preallocation,
Mingming Cao02ea2102006-10-11 01:20:56 -0700162 high resolution time stamps, and larger file support etc. These
Mingming Caodab291a2006-10-11 01:21:01 -0700163 features will be added to ext4dev gradually.
Mingming Cao02ea2102006-10-11 01:20:56 -0700164
165 To compile this file system support as a module, choose M here. The
166 module will be called ext4dev. Be aware, however, that the filesystem
167 of your root partition (the one containing the directory /) cannot
168 be compiled as a module, and so this could be dangerous.
169
170 If unsure, say N.
171
172config EXT4DEV_FS_XATTR
173 bool "Ext4dev extended attributes"
174 depends on EXT4DEV_FS
175 default y
176 help
177 Extended attributes are name:value pairs associated with inodes by
178 the kernel or by users (see the attr(5) manual page, or visit
179 <http://acl.bestbits.at/> for details).
180
181 If unsure, say N.
182
183 You need this for POSIX ACL support on ext4dev/ext4.
184
185config EXT4DEV_FS_POSIX_ACL
186 bool "Ext4dev POSIX Access Control Lists"
187 depends on EXT4DEV_FS_XATTR
188 select FS_POSIX_ACL
189 help
190 POSIX Access Control Lists (ACLs) support permissions for users and
191 groups beyond the owner/group/world scheme.
192
193 To learn more about Access Control Lists, visit the POSIX ACLs for
194 Linux website <http://acl.bestbits.at/>.
195
196 If you don't know what Access Control Lists are, say N
197
198config EXT4DEV_FS_SECURITY
199 bool "Ext4dev Security Labels"
200 depends on EXT4DEV_FS_XATTR
201 help
202 Security labels support alternative access control models
203 implemented by security modules like SELinux. This option
204 enables an extended attribute handler for file security
205 labels in the ext4dev/ext4 filesystem.
206
207 If you are not using a security module that requires using
208 extended attributes for file security labels, say N.
209
Linus Torvalds1da177e2005-04-16 15:20:36 -0700210config JBD
Linus Torvalds1da177e2005-04-16 15:20:36 -0700211 tristate
Linus Torvalds1da177e2005-04-16 15:20:36 -0700212 help
Matt LaPlantecc2e2762006-10-03 22:22:29 +0200213 This is a generic journalling layer for block devices. It is
Mark Fashehb4e40a52005-12-15 14:31:24 -0800214 currently used by the ext3 and OCFS2 file systems, but it could
215 also be used to add journal support to other file systems or block
216 devices such as RAID or LVM.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700217
Mark Fashehb4e40a52005-12-15 14:31:24 -0800218 If you are using the ext3 or OCFS2 file systems, you need to
219 say Y here. If you are not using ext3 OCFS2 then you will probably
220 want to say N.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700221
222 To compile this device as a module, choose M here: the module will be
Mark Fashehb4e40a52005-12-15 14:31:24 -0800223 called jbd. If you are compiling ext3 or OCFS2 into the kernel,
224 you cannot compile this code as a module.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700225
226config JBD_DEBUG
227 bool "JBD (ext3) debugging support"
228 depends on JBD
229 help
230 If you are using the ext3 journaled file system (or potentially any
231 other file system/device using JBD), this option allows you to
232 enable debugging output while the system is running, in order to
233 help track down any problems you are having. By default the
234 debugging output will be turned off.
235
236 If you select Y here, then you will be able to turn on debugging
237 with "echo N > /proc/sys/fs/jbd-debug", where N is a number between
238 1 and 5, the higher the number, the more debugging output is
239 generated. To turn debugging off again, do
240 "echo 0 > /proc/sys/fs/jbd-debug".
241
Mingming Caodab291a2006-10-11 01:21:01 -0700242config JBD2
243 tristate
244 help
245 This is a generic journaling layer for block devices that support
246 both 32-bit and 64-bit block numbers. It is currently used by
247 the ext4dev/ext4 filesystem, but it could also be used to add
248 journal support to other file systems or block devices such
249 as RAID or LVM.
250
251 If you are using ext4dev/ext4, you need to say Y here. If you are not
252 using ext4dev/ext4 then you will probably want to say N.
253
254 To compile this device as a module, choose M here. The module will be
255 called jbd2. If you are compiling ext4dev/ext4 into the kernel,
256 you cannot compile this code as a module.
257
258config JBD2_DEBUG
259 bool "JBD2 (ext4dev/ext4) debugging support"
260 depends on JBD2
261 help
262 If you are using the ext4dev/ext4 journaled file system (or
263 potentially any other filesystem/device using JBD2), this option
264 allows you to enable debugging output while the system is running,
265 in order to help track down any problems you are having.
266 By default, the debugging output will be turned off.
267
268 If you select Y here, then you will be able to turn on debugging
269 with "echo N > /proc/sys/fs/jbd2-debug", where N is a number between
270 1 and 5. The higher the number, the more debugging output is
271 generated. To turn debugging off again, do
272 "echo 0 > /proc/sys/fs/jbd2-debug".
273
Linus Torvalds1da177e2005-04-16 15:20:36 -0700274config FS_MBCACHE
Mingming Cao02ea2102006-10-11 01:20:56 -0700275# Meta block cache for Extended Attributes (ext2/ext3/ext4)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700276 tristate
Mingming Cao02ea2102006-10-11 01:20:56 -0700277 depends on EXT2_FS_XATTR || EXT3_FS_XATTR || EXT4DEV_FS_XATTR
278 default y if EXT2_FS=y || EXT3_FS=y || EXT4DEV_FS=y
279 default m if EXT2_FS=m || EXT3_FS=m || EXT4DEV_FS=m
Linus Torvalds1da177e2005-04-16 15:20:36 -0700280
281config REISERFS_FS
282 tristate "Reiserfs support"
283 help
284 Stores not just filenames but the files themselves in a balanced
Matt LaPlantecc2e2762006-10-03 22:22:29 +0200285 tree. Uses journalling.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700286
287 Balanced trees are more efficient than traditional file system
288 architectural foundations.
289
290 In general, ReiserFS is as fast as ext2, but is very efficient with
291 large directories and small files. Additional patches are needed
292 for NFS and quotas, please see <http://www.namesys.com/> for links.
293
294 It is more easily extended to have features currently found in
295 database and keyword search systems than block allocation based file
296 systems are. The next version will be so extended, and will support
297 plugins consistent with our motto ``It takes more than a license to
298 make source code open.''
299
300 Read <http://www.namesys.com/> to learn more about reiserfs.
301
302 Sponsored by Threshold Networks, Emusic.com, and Bigstorage.com.
303
304 If you like it, you can pay us to add new features to it that you
305 need, buy a support contract, or pay us to port it to another OS.
306
307config REISERFS_CHECK
308 bool "Enable reiserfs debug mode"
309 depends on REISERFS_FS
310 help
311 If you set this to Y, then ReiserFS will perform every check it can
312 possibly imagine of its internal consistency throughout its
313 operation. It will also go substantially slower. More than once we
314 have forgotten that this was on, and then gone despondent over the
315 latest benchmarks.:-) Use of this option allows our team to go all
316 out in checking for consistency when debugging without fear of its
317 effect on end users. If you are on the verge of sending in a bug
318 report, say Y and you might get a useful error message. Almost
319 everyone should say N.
320
321config REISERFS_PROC_INFO
322 bool "Stats in /proc/fs/reiserfs"
323 depends on REISERFS_FS
324 help
325 Create under /proc/fs/reiserfs a hierarchy of files, displaying
326 various ReiserFS statistics and internal data at the expense of
327 making your kernel or module slightly larger (+8 KB). This also
328 increases the amount of kernel memory required for each mount.
329 Almost everyone but ReiserFS developers and people fine-tuning
330 reiserfs or tracing problems should say N.
331
332config REISERFS_FS_XATTR
333 bool "ReiserFS extended attributes"
334 depends on REISERFS_FS
335 help
336 Extended attributes are name:value pairs associated with inodes by
337 the kernel or by users (see the attr(5) manual page, or visit
338 <http://acl.bestbits.at/> for details).
339
340 If unsure, say N.
341
342config REISERFS_FS_POSIX_ACL
343 bool "ReiserFS POSIX Access Control Lists"
344 depends on REISERFS_FS_XATTR
Andreas Gruenbacherb84c2152005-07-07 17:56:57 -0700345 select FS_POSIX_ACL
Linus Torvalds1da177e2005-04-16 15:20:36 -0700346 help
347 Posix Access Control Lists (ACLs) support permissions for users and
348 groups beyond the owner/group/world scheme.
349
350 To learn more about Access Control Lists, visit the Posix ACLs for
351 Linux website <http://acl.bestbits.at/>.
352
353 If you don't know what Access Control Lists are, say N
354
355config REISERFS_FS_SECURITY
356 bool "ReiserFS Security Labels"
357 depends on REISERFS_FS_XATTR
358 help
359 Security labels support alternative access control models
360 implemented by security modules like SELinux. This option
361 enables an extended attribute handler for file security
362 labels in the ReiserFS filesystem.
363
364 If you are not using a security module that requires using
365 extended attributes for file security labels, say N.
366
367config JFS_FS
368 tristate "JFS filesystem support"
369 select NLS
370 help
371 This is a port of IBM's Journaled Filesystem . More information is
372 available in the file <file:Documentation/filesystems/jfs.txt>.
373
374 If you do not intend to use the JFS filesystem, say N.
375
376config JFS_POSIX_ACL
377 bool "JFS POSIX Access Control Lists"
378 depends on JFS_FS
Andreas Gruenbacherb84c2152005-07-07 17:56:57 -0700379 select FS_POSIX_ACL
Linus Torvalds1da177e2005-04-16 15:20:36 -0700380 help
381 Posix Access Control Lists (ACLs) support permissions for users and
382 groups beyond the owner/group/world scheme.
383
384 To learn more about Access Control Lists, visit the Posix ACLs for
385 Linux website <http://acl.bestbits.at/>.
386
387 If you don't know what Access Control Lists are, say N
388
389config JFS_SECURITY
390 bool "JFS Security Labels"
391 depends on JFS_FS
392 help
393 Security labels support alternative access control models
394 implemented by security modules like SELinux. This option
395 enables an extended attribute handler for file security
396 labels in the jfs filesystem.
397
398 If you are not using a security module that requires using
399 extended attributes for file security labels, say N.
400
401config JFS_DEBUG
402 bool "JFS debugging"
403 depends on JFS_FS
404 help
405 If you are experiencing any problems with the JFS filesystem, say
406 Y here. This will result in additional debugging messages to be
407 written to the system log. Under normal circumstances, this
408 results in very little overhead.
409
410config JFS_STATISTICS
411 bool "JFS statistics"
412 depends on JFS_FS
413 help
414 Enabling this option will cause statistics from the JFS file system
415 to be made available to the user in the /proc/fs/jfs/ directory.
416
417config FS_POSIX_ACL
418# Posix ACL utility routines (for now, only ext2/ext3/jfs/reiserfs)
419#
420# NOTE: you can implement Posix ACLs without these helpers (XFS does).
421# Never use this symbol for ifdefs.
422#
423 bool
Andreas Gruenbacherb84c2152005-07-07 17:56:57 -0700424 default n
Linus Torvalds1da177e2005-04-16 15:20:36 -0700425
426source "fs/xfs/Kconfig"
David Teiglandf7825dc2006-01-16 16:43:37 +0000427source "fs/gfs2/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700428
Mark Fashehb4e40a52005-12-15 14:31:24 -0800429config OCFS2_FS
Mark Fasheh02ed8412006-09-14 10:28:06 -0700430 tristate "OCFS2 file system support"
431 depends on NET && SYSFS
Mark Fashehb4e40a52005-12-15 14:31:24 -0800432 select CONFIGFS_FS
433 select JBD
434 select CRC32
435 select INET
436 help
437 OCFS2 is a general purpose extent based shared disk cluster file
438 system with many similarities to ext3. It supports 64 bit inode
439 numbers, and has automatically extending metadata groups which may
440 also make it attractive for non-clustered use.
441
442 You'll want to install the ocfs2-tools package in order to at least
443 get "mount.ocfs2".
444
445 Project web page: http://oss.oracle.com/projects/ocfs2
446 Tools web page: http://oss.oracle.com/projects/ocfs2-tools
447 OCFS2 mailing lists: http://oss.oracle.com/projects/ocfs2/mailman/
448
449 Note: Features which OCFS2 does not support yet:
450 - extended attributes
Mark Fashehb4e40a52005-12-15 14:31:24 -0800451 - shared writeable mmap
452 - loopback is supported, but data written will not
453 be cluster coherent.
454 - quotas
455 - cluster aware flock
456 - Directory change notification (F_NOTIFY)
457 - Distributed Caching (F_SETLEASE/F_GETLEASE/break_lease)
458 - POSIX ACLs
459 - readpages / writepages (not user visible)
460
Joel Becker2b388c62006-05-10 18:28:59 -0700461config OCFS2_DEBUG_MASKLOG
462 bool "OCFS2 logging support"
463 depends on OCFS2_FS
464 default y
465 help
466 The ocfs2 filesystem has an extensive logging system. The system
467 allows selection of events to log via files in /sys/o2cb/logmask/.
468 This option will enlarge your kernel, but it allows debugging of
469 ocfs2 filesystem issues.
470
Linus Torvalds1da177e2005-04-16 15:20:36 -0700471config MINIX_FS
472 tristate "Minix fs support"
473 help
474 Minix is a simple operating system used in many classes about OS's.
475 The minix file system (method to organize files on a hard disk
476 partition or a floppy disk) was the original file system for Linux,
477 but has been superseded by the second extended file system ext2fs.
478 You don't want to use the minix file system on your hard disk
479 because of certain built-in restrictions, but it is sometimes found
480 on older Linux floppy disks. This option will enlarge your kernel
481 by about 28 KB. If unsure, say N.
482
483 To compile this file system support as a module, choose M here: the
484 module will be called minix. Note that the file system of your root
485 partition (the one containing the directory /) cannot be compiled as
486 a module.
487
488config ROMFS_FS
489 tristate "ROM file system support"
490 ---help---
491 This is a very small read-only file system mainly intended for
492 initial ram disks of installation disks, but it could be used for
493 other read-only media as well. Read
494 <file:Documentation/filesystems/romfs.txt> for details.
495
496 To compile this file system support as a module, choose M here: the
497 module will be called romfs. Note that the file system of your
498 root partition (the one containing the directory /) cannot be a
499 module.
500
501 If you don't know whether you need it, then you don't need it:
502 answer N.
503
David Howells93614012006-09-30 20:45:40 +0200504endif
505
Robert Love0eeca282005-07-12 17:06:03 -0400506config INOTIFY
507 bool "Inotify file change notification support"
508 default y
509 ---help---
Amy Griffis2d9048e2006-06-01 13:10:59 -0700510 Say Y here to enable inotify support. Inotify is a file change
511 notification system and a replacement for dnotify. Inotify fixes
512 numerous shortcomings in dnotify and introduces several new features
513 including multiple file events, one-shot support, and unmount
Robert Love3de11742005-08-04 13:07:08 -0700514 notification.
515
516 For more information, see Documentation/filesystems/inotify.txt
Robert Love0eeca282005-07-12 17:06:03 -0400517
518 If unsure, say Y.
519
Amy Griffis2d9048e2006-06-01 13:10:59 -0700520config INOTIFY_USER
521 bool "Inotify support for userspace"
522 depends on INOTIFY
523 default y
524 ---help---
525 Say Y here to enable inotify support for userspace, including the
526 associated system calls. Inotify allows monitoring of both files and
527 directories via a single open fd. Events are read from the file
528 descriptor, which is also select()- and poll()-able.
529
530 For more information, see Documentation/filesystems/inotify.txt
531
532 If unsure, say Y.
533
Linus Torvalds1da177e2005-04-16 15:20:36 -0700534config QUOTA
535 bool "Quota support"
536 help
537 If you say Y here, you will be able to set per user limits for disk
538 usage (also called disk quotas). Currently, it works for the
539 ext2, ext3, and reiserfs file system. ext3 also supports journalled
540 quotas for which you don't need to run quotacheck(8) after an unclean
Adrian Bunk919532a2005-09-06 15:17:22 -0700541 shutdown.
542 For further details, read the Quota mini-HOWTO, available from
Linus Torvalds1da177e2005-04-16 15:20:36 -0700543 <http://www.tldp.org/docs.html#howto>, or the documentation provided
544 with the quota tools. Probably the quota support is only useful for
545 multi user systems. If unsure, say N.
546
547config QFMT_V1
548 tristate "Old quota format support"
549 depends on QUOTA
550 help
551 This quota format was (is) used by kernels earlier than 2.4.22. If
552 you have quota working and you don't want to convert to new quota
553 format say Y here.
554
555config QFMT_V2
556 tristate "Quota format v2 support"
557 depends on QUOTA
558 help
559 This quota format allows using quotas with 32-bit UIDs/GIDs. If you
Adrian Bunk919532a2005-09-06 15:17:22 -0700560 need this functionality say Y here.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700561
562config QUOTACTL
563 bool
564 depends on XFS_QUOTA || QUOTA
565 default y
566
567config DNOTIFY
568 bool "Dnotify support" if EMBEDDED
569 default y
570 help
571 Dnotify is a directory-based per-fd file change notification system
572 that uses signals to communicate events to user-space. There exist
573 superior alternatives, but some applications may still rely on
574 dnotify.
575
576 Because of this, if unsure, say Y.
577
578config AUTOFS_FS
579 tristate "Kernel automounter support"
580 help
581 The automounter is a tool to automatically mount remote file systems
582 on demand. This implementation is partially kernel-based to reduce
583 overhead in the already-mounted case; this is unlike the BSD
584 automounter (amd), which is a pure user space daemon.
585
586 To use the automounter you need the user-space tools from the autofs
587 package; you can find the location in <file:Documentation/Changes>.
588 You also want to answer Y to "NFS file system support", below.
589
590 If you want to use the newer version of the automounter with more
591 features, say N here and say Y to "Kernel automounter v4 support",
592 below.
593
594 To compile this support as a module, choose M here: the module will be
595 called autofs.
596
597 If you are not a part of a fairly large, distributed network, you
598 probably do not need an automounter, and can say N here.
599
600config AUTOFS4_FS
601 tristate "Kernel automounter version 4 support (also supports v3)"
602 help
603 The automounter is a tool to automatically mount remote file systems
604 on demand. This implementation is partially kernel-based to reduce
605 overhead in the already-mounted case; this is unlike the BSD
606 automounter (amd), which is a pure user space daemon.
607
608 To use the automounter you need the user-space tools from
609 <ftp://ftp.kernel.org/pub/linux/daemons/autofs/v4/>; you also
610 want to answer Y to "NFS file system support", below.
611
612 To compile this support as a module, choose M here: the module will be
613 called autofs4. You will need to add "alias autofs autofs4" to your
614 modules configuration file.
615
616 If you are not a part of a fairly large, distributed network or
617 don't have a laptop which needs to dynamically reconfigure to the
618 local network, you probably do not need an automounter, and can say
619 N here.
620
Miklos Szeredi04578f12005-09-09 13:10:22 -0700621config FUSE_FS
622 tristate "Filesystem in Userspace support"
623 help
624 With FUSE it is possible to implement a fully functional filesystem
625 in a userspace program.
626
627 There's also companion library: libfuse. This library along with
628 utilities is available from the FUSE homepage:
629 <http://fuse.sourceforge.net/>
630
Miklos Szeredi909021e2005-09-27 21:45:20 -0700631 See <file:Documentation/filesystems/fuse.txt> for more information.
632 See <file:Documentation/Changes> for needed library/utility version.
633
Miklos Szeredi04578f12005-09-09 13:10:22 -0700634 If you want to develop a userspace FS, or if you want to use
635 a filesystem based on FUSE, answer Y or M.
636
Randy Dunlapf2fbc6c2006-10-19 23:28:35 -0700637config GENERIC_ACL
638 bool
639 select FS_POSIX_ACL
640
David Howells93614012006-09-30 20:45:40 +0200641if BLOCK
Linus Torvalds1da177e2005-04-16 15:20:36 -0700642menu "CD-ROM/DVD Filesystems"
643
644config ISO9660_FS
645 tristate "ISO 9660 CDROM file system support"
646 help
647 This is the standard file system used on CD-ROMs. It was previously
648 known as "High Sierra File System" and is called "hsfs" on other
649 Unix systems. The so-called Rock-Ridge extensions which allow for
650 long Unix filenames and symbolic links are also supported by this
651 driver. If you have a CD-ROM drive and want to do more with it than
652 just listen to audio CDs and watch its LEDs, say Y (and read
653 <file:Documentation/filesystems/isofs.txt> and the CD-ROM-HOWTO,
654 available from <http://www.tldp.org/docs.html#howto>), thereby
655 enlarging your kernel by about 27 KB; otherwise say N.
656
657 To compile this file system support as a module, choose M here: the
658 module will be called isofs.
659
660config JOLIET
661 bool "Microsoft Joliet CDROM extensions"
662 depends on ISO9660_FS
663 select NLS
664 help
665 Joliet is a Microsoft extension for the ISO 9660 CD-ROM file system
666 which allows for long filenames in unicode format (unicode is the
667 new 16 bit character code, successor to ASCII, which encodes the
668 characters of almost all languages of the world; see
669 <http://www.unicode.org/> for more information). Say Y here if you
670 want to be able to read Joliet CD-ROMs under Linux.
671
672config ZISOFS
673 bool "Transparent decompression extension"
674 depends on ISO9660_FS
675 select ZLIB_INFLATE
676 help
677 This is a Linux-specific extension to RockRidge which lets you store
678 data in compressed form on a CD-ROM and have it transparently
679 decompressed when the CD-ROM is accessed. See
680 <http://www.kernel.org/pub/linux/utils/fs/zisofs/> for the tools
681 necessary to create such a filesystem. Say Y here if you want to be
682 able to read such compressed CD-ROMs.
683
684config ZISOFS_FS
685# for fs/nls/Config.in
686 tristate
687 depends on ZISOFS
688 default ISO9660_FS
689
690config UDF_FS
691 tristate "UDF file system support"
692 help
693 This is the new file system used on some CD-ROMs and DVDs. Say Y if
694 you intend to mount DVD discs or CDRW's written in packet mode, or
695 if written to by other UDF utilities, such as DirectCD.
696 Please read <file:Documentation/filesystems/udf.txt>.
697
698 To compile this file system support as a module, choose M here: the
699 module will be called udf.
700
701 If unsure, say N.
702
703config UDF_NLS
704 bool
705 default y
706 depends on (UDF_FS=m && NLS) || (UDF_FS=y && NLS=y)
707
708endmenu
David Howells93614012006-09-30 20:45:40 +0200709endif
Linus Torvalds1da177e2005-04-16 15:20:36 -0700710
David Howells93614012006-09-30 20:45:40 +0200711if BLOCK
Linus Torvalds1da177e2005-04-16 15:20:36 -0700712menu "DOS/FAT/NT Filesystems"
713
714config FAT_FS
715 tristate
716 select NLS
717 help
718 If you want to use one of the FAT-based file systems (the MS-DOS and
719 VFAT (Windows 95) file systems), then you must say Y or M here
720 to include FAT support. You will then be able to mount partitions or
721 diskettes with FAT-based file systems and transparently access the
722 files on them, i.e. MSDOS files will look and behave just like all
723 other Unix files.
724
725 This FAT support is not a file system in itself, it only provides
726 the foundation for the other file systems. You will have to say Y or
727 M to at least one of "MSDOS fs support" or "VFAT fs support" in
728 order to make use of it.
729
730 Another way to read and write MSDOS floppies and hard drive
731 partitions from within Linux (but not transparently) is with the
732 mtools ("man mtools") program suite. You don't need to say Y here in
733 order to do that.
734
735 If you need to move large files on floppies between a DOS and a
736 Linux box, say Y here, mount the floppy under Linux with an MSDOS
737 file system and use GNU tar's M option. GNU tar is a program
738 available for Unix and DOS ("man tar" or "info tar").
739
740 It is now also becoming possible to read and write compressed FAT
741 file systems; read <file:Documentation/filesystems/fat_cvf.txt> for
742 details.
743
744 The FAT support will enlarge your kernel by about 37 KB. If unsure,
745 say Y.
746
747 To compile this as a module, choose M here: the module will be called
748 fat. Note that if you compile the FAT support as a module, you
749 cannot compile any of the FAT-based file systems into the kernel
750 -- they will have to be modules as well.
751
752config MSDOS_FS
753 tristate "MSDOS fs support"
754 select FAT_FS
755 help
756 This allows you to mount MSDOS partitions of your hard drive (unless
757 they are compressed; to access compressed MSDOS partitions under
758 Linux, you can either use the DOS emulator DOSEMU, described in the
759 DOSEMU-HOWTO, available from
760 <http://www.tldp.org/docs.html#howto>, or try dmsdosfs in
761 <ftp://ibiblio.org/pub/Linux/system/filesystems/dosfs/>. If you
762 intend to use dosemu with a non-compressed MSDOS partition, say Y
763 here) and MSDOS floppies. This means that file access becomes
764 transparent, i.e. the MSDOS files look and behave just like all
765 other Unix files.
766
767 If you have Windows 95 or Windows NT installed on your MSDOS
768 partitions, you should use the VFAT file system (say Y to "VFAT fs
769 support" below), or you will not be able to see the long filenames
770 generated by Windows 95 / Windows NT.
771
772 This option will enlarge your kernel by about 7 KB. If unsure,
773 answer Y. This will only work if you said Y to "DOS FAT fs support"
774 as well. To compile this as a module, choose M here: the module will
775 be called msdos.
776
777config VFAT_FS
778 tristate "VFAT (Windows-95) fs support"
779 select FAT_FS
780 help
781 This option provides support for normal Windows file systems with
782 long filenames. That includes non-compressed FAT-based file systems
783 used by Windows 95, Windows 98, Windows NT 4.0, and the Unix
784 programs from the mtools package.
785
786 The VFAT support enlarges your kernel by about 10 KB and it only
787 works if you said Y to the "DOS FAT fs support" above. Please read
788 the file <file:Documentation/filesystems/vfat.txt> for details. If
789 unsure, say Y.
790
791 To compile this as a module, choose M here: the module will be called
792 vfat.
793
794config FAT_DEFAULT_CODEPAGE
795 int "Default codepage for FAT"
796 depends on MSDOS_FS || VFAT_FS
797 default 437
798 help
799 This option should be set to the codepage of your FAT filesystems.
800 It can be overridden with the "codepage" mount option.
801 See <file:Documentation/filesystems/vfat.txt> for more information.
802
803config FAT_DEFAULT_IOCHARSET
804 string "Default iocharset for FAT"
805 depends on VFAT_FS
806 default "iso8859-1"
807 help
808 Set this to the default input/output character set you'd
809 like FAT to use. It should probably match the character set
810 that most of your FAT filesystems use, and can be overridden
811 with the "iocharset" mount option for FAT filesystems.
812 Note that "utf8" is not recommended for FAT filesystems.
813 If unsure, you shouldn't set "utf8" here.
814 See <file:Documentation/filesystems/vfat.txt> for more information.
815
816config NTFS_FS
817 tristate "NTFS file system support"
818 select NLS
819 help
820 NTFS is the file system of Microsoft Windows NT, 2000, XP and 2003.
821
822 Saying Y or M here enables read support. There is partial, but
823 safe, write support available. For write support you must also
824 say Y to "NTFS write support" below.
825
826 There are also a number of user-space tools available, called
827 ntfsprogs. These include ntfsundelete and ntfsresize, that work
828 without NTFS support enabled in the kernel.
829
830 This is a rewrite from scratch of Linux NTFS support and replaced
831 the old NTFS code starting with Linux 2.5.11. A backport to
832 the Linux 2.4 kernel series is separately available as a patch
833 from the project web site.
834
835 For more information see <file:Documentation/filesystems/ntfs.txt>
836 and <http://linux-ntfs.sourceforge.net/>.
837
838 To compile this file system support as a module, choose M here: the
839 module will be called ntfs.
840
841 If you are not using Windows NT, 2000, XP or 2003 in addition to
842 Linux on your computer it is safe to say N.
843
844config NTFS_DEBUG
845 bool "NTFS debugging support"
846 depends on NTFS_FS
847 help
848 If you are experiencing any problems with the NTFS file system, say
849 Y here. This will result in additional consistency checks to be
850 performed by the driver as well as additional debugging messages to
851 be written to the system log. Note that debugging messages are
852 disabled by default. To enable them, supply the option debug_msgs=1
853 at the kernel command line when booting the kernel or as an option
854 to insmod when loading the ntfs module. Once the driver is active,
855 you can enable debugging messages by doing (as root):
856 echo 1 > /proc/sys/fs/ntfs-debug
857 Replacing the "1" with "0" would disable debug messages.
858
859 If you leave debugging messages disabled, this results in little
860 overhead, but enabling debug messages results in very significant
861 slowdown of the system.
862
863 When reporting bugs, please try to have available a full dump of
864 debugging messages while the misbehaviour was occurring.
865
866config NTFS_RW
867 bool "NTFS write support"
868 depends on NTFS_FS
869 help
870 This enables the partial, but safe, write support in the NTFS driver.
871
872 The only supported operation is overwriting existing files, without
873 changing the file length. No file or directory creation, deletion or
874 renaming is possible. Note only non-resident files can be written to
875 so you may find that some very small files (<500 bytes or so) cannot
876 be written to.
877
878 While we cannot guarantee that it will not damage any data, we have
879 so far not received a single report where the driver would have
880 damaged someones data so we assume it is perfectly safe to use.
881
882 Note: While write support is safe in this version (a rewrite from
883 scratch of the NTFS support), it should be noted that the old NTFS
884 write support, included in Linux 2.5.10 and before (since 1997),
885 is not safe.
886
887 This is currently useful with TopologiLinux. TopologiLinux is run
888 on top of any DOS/Microsoft Windows system without partitioning your
889 hard disk. Unlike other Linux distributions TopologiLinux does not
890 need its own partition. For more information see
891 <http://topologi-linux.sourceforge.net/>
892
893 It is perfectly safe to say N here.
894
895endmenu
David Howells93614012006-09-30 20:45:40 +0200896endif
Linus Torvalds1da177e2005-04-16 15:20:36 -0700897
898menu "Pseudo filesystems"
899
900config PROC_FS
H. Peter Anvin69755652006-06-25 05:48:08 -0700901 bool "/proc file system support" if EMBEDDED
902 default y
Linus Torvalds1da177e2005-04-16 15:20:36 -0700903 help
904 This is a virtual file system providing information about the status
905 of the system. "Virtual" means that it doesn't take up any space on
906 your hard disk: the files are created on the fly by the kernel when
907 you try to access them. Also, you cannot read the files with older
908 version of the program less: you need to use more or cat.
909
910 It's totally cool; for example, "cat /proc/interrupts" gives
911 information about what the different IRQs are used for at the moment
912 (there is a small number of Interrupt ReQuest lines in your computer
913 that are used by the attached devices to gain the CPU's attention --
914 often a source of trouble if two devices are mistakenly configured
915 to use the same IRQ). The program procinfo to display some
916 information about your system gathered from the /proc file system.
917
918 Before you can use the /proc file system, it has to be mounted,
919 meaning it has to be given a location in the directory hierarchy.
920 That location should be /proc. A command such as "mount -t proc proc
921 /proc" or the equivalent line in /etc/fstab does the job.
922
923 The /proc file system is explained in the file
924 <file:Documentation/filesystems/proc.txt> and on the proc(5) manpage
925 ("man 5 proc").
926
927 This option will enlarge your kernel by about 67 KB. Several
928 programs depend on this, so everyone should say Y here.
929
930config PROC_KCORE
931 bool "/proc/kcore support" if !ARM
932 depends on PROC_FS && MMU
933
Vivek Goyal666bfdd2005-06-25 14:58:21 -0700934config PROC_VMCORE
935 bool "/proc/vmcore support (EXPERIMENTAL)"
Maneesh Soni05970d42006-01-09 20:51:52 -0800936 depends on PROC_FS && EXPERIMENTAL && CRASH_DUMP
Vivek Goyal68250ba2006-04-10 22:54:30 -0700937 default y
Vivek Goyal666bfdd2005-06-25 14:58:21 -0700938 help
939 Exports the dump image of crashed kernel in ELF format.
940
Eric W. Biedermanb89a8172006-09-27 01:51:04 -0700941config PROC_SYSCTL
942 bool "Sysctl support (/proc/sys)" if EMBEDDED
943 depends on PROC_FS
944 select SYSCTL
945 default y
946 ---help---
947 The sysctl interface provides a means of dynamically changing
948 certain kernel parameters and variables on the fly without requiring
949 a recompile of the kernel or reboot of the system. The primary
950 interface is through /proc/sys. If you say Y here a tree of
951 modifiable sysctl entries will be generated beneath the
952 /proc/sys directory. They are explained in the files
953 in <file:Documentation/sysctl/>. Note that enabling this
954 option will enlarge the kernel by at least 8 KB.
955
956 As it is generally a good thing, you should say Y here unless
957 building a kernel for install/rescue disks or your system is very
958 limited in memory.
959
Linus Torvalds1da177e2005-04-16 15:20:36 -0700960config SYSFS
961 bool "sysfs file system support" if EMBEDDED
962 default y
963 help
964 The sysfs filesystem is a virtual filesystem that the kernel uses to
965 export internal kernel objects, their attributes, and their
966 relationships to one another.
967
968 Users can use sysfs to ascertain useful information about the running
969 kernel, such as the devices the kernel has discovered on each bus and
970 which driver each is bound to. sysfs can also be used to tune devices
971 and other kernel subsystems.
972
973 Some system agents rely on the information in sysfs to operate.
974 /sbin/hotplug uses device and object attributes in sysfs to assist in
975 delegating policy decisions, like persistantly naming devices.
976
977 sysfs is currently used by the block subsystem to mount the root
978 partition. If sysfs is disabled you must specify the boot device on
979 the kernel boot command line via its major and minor numbers. For
980 example, "root=03:01" for /dev/hda1.
981
982 Designers of embedded systems may wish to say N here to conserve space.
983
Linus Torvalds1da177e2005-04-16 15:20:36 -0700984config TMPFS
985 bool "Virtual memory file system support (former shm fs)"
986 help
987 Tmpfs is a file system which keeps all files in virtual memory.
988
989 Everything in tmpfs is temporary in the sense that no files will be
990 created on your hard drive. The files live in memory and swap
991 space. If you unmount a tmpfs instance, everything stored therein is
992 lost.
993
994 See <file:Documentation/filesystems/tmpfs.txt> for details.
995
Andreas Gruenbacher39f02472006-09-29 02:01:35 -0700996config TMPFS_POSIX_ACL
997 bool "Tmpfs POSIX Access Control Lists"
998 depends on TMPFS
999 select GENERIC_ACL
1000 help
1001 POSIX Access Control Lists (ACLs) support permissions for users and
1002 groups beyond the owner/group/world scheme.
1003
1004 To learn more about Access Control Lists, visit the POSIX ACLs for
1005 Linux website <http://acl.bestbits.at/>.
1006
1007 If you don't know what Access Control Lists are, say N.
1008
Linus Torvalds1da177e2005-04-16 15:20:36 -07001009config HUGETLBFS
1010 bool "HugeTLB file system support"
Brian Gerst0d078f62005-10-30 14:59:20 -08001011 depends X86 || IA64 || PPC64 || SPARC64 || SUPERH || BROKEN
Arthur Othienodda27d12006-04-18 22:20:57 -07001012 help
1013 hugetlbfs is a filesystem backing for HugeTLB pages, based on
1014 ramfs. For architectures that support it, say Y here and read
1015 <file:Documentation/vm/hugetlbpage.txt> for details.
1016
1017 If unsure, say N.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001018
1019config HUGETLB_PAGE
1020 def_bool HUGETLBFS
1021
1022config RAMFS
1023 bool
1024 default y
1025 ---help---
1026 Ramfs is a file system which keeps all files in RAM. It allows
1027 read and write access.
1028
1029 It is more of an programming example than a useable file system. If
1030 you need a file system which lives in RAM with limit checking use
1031 tmpfs.
1032
1033 To compile this as a module, choose M here: the module will be called
1034 ramfs.
1035
Joel Becker7063fbf2005-12-15 14:29:43 -08001036config CONFIGFS_FS
1037 tristate "Userspace-driven configuration filesystem (EXPERIMENTAL)"
Adrian Bunk65714b92006-03-26 14:25:52 +02001038 depends on SYSFS && EXPERIMENTAL
Joel Becker7063fbf2005-12-15 14:29:43 -08001039 help
1040 configfs is a ram-based filesystem that provides the converse
1041 of sysfs's functionality. Where sysfs is a filesystem-based
1042 view of kernel objects, configfs is a filesystem-based manager
1043 of kernel objects, or config_items.
1044
1045 Both sysfs and configfs can and should exist together on the
1046 same system. One is not a replacement for the other.
1047
Linus Torvalds1da177e2005-04-16 15:20:36 -07001048endmenu
1049
1050menu "Miscellaneous filesystems"
1051
1052config ADFS_FS
1053 tristate "ADFS file system support (EXPERIMENTAL)"
David Howells93614012006-09-30 20:45:40 +02001054 depends on BLOCK && EXPERIMENTAL
Linus Torvalds1da177e2005-04-16 15:20:36 -07001055 help
1056 The Acorn Disc Filing System is the standard file system of the
1057 RiscOS operating system which runs on Acorn's ARM-based Risc PC
1058 systems and the Acorn Archimedes range of machines. If you say Y
1059 here, Linux will be able to read from ADFS partitions on hard drives
1060 and from ADFS-formatted floppy discs. If you also want to be able to
1061 write to those devices, say Y to "ADFS write support" below.
1062
1063 The ADFS partition should be the first partition (i.e.,
1064 /dev/[hs]d?1) on each of your drives. Please read the file
1065 <file:Documentation/filesystems/adfs.txt> for further details.
1066
1067 To compile this code as a module, choose M here: the module will be
1068 called adfs.
1069
1070 If unsure, say N.
1071
1072config ADFS_FS_RW
1073 bool "ADFS write support (DANGEROUS)"
1074 depends on ADFS_FS
1075 help
1076 If you say Y here, you will be able to write to ADFS partitions on
1077 hard drives and ADFS-formatted floppy disks. This is experimental
1078 codes, so if you're unsure, say N.
1079
1080config AFFS_FS
1081 tristate "Amiga FFS file system support (EXPERIMENTAL)"
David Howells93614012006-09-30 20:45:40 +02001082 depends on BLOCK && EXPERIMENTAL
Linus Torvalds1da177e2005-04-16 15:20:36 -07001083 help
1084 The Fast File System (FFS) is the common file system used on hard
1085 disks by Amiga(tm) systems since AmigaOS Version 1.3 (34.20). Say Y
1086 if you want to be able to read and write files from and to an Amiga
1087 FFS partition on your hard drive. Amiga floppies however cannot be
1088 read with this driver due to an incompatibility of the floppy
1089 controller used in an Amiga and the standard floppy controller in
1090 PCs and workstations. Read <file:Documentation/filesystems/affs.txt>
1091 and <file:fs/affs/Changes>.
1092
1093 With this driver you can also mount disk files used by Bernd
1094 Schmidt's Un*X Amiga Emulator
1095 (<http://www.freiburg.linux.de/~uae/>).
1096 If you want to do this, you will also need to say Y or M to "Loop
1097 device support", above.
1098
1099 To compile this file system support as a module, choose M here: the
1100 module will be called affs. If unsure, say N.
1101
Michael Halcrow237fead2006-10-04 02:16:22 -07001102config ECRYPT_FS
1103 tristate "eCrypt filesystem layer support (EXPERIMENTAL)"
1104 depends on EXPERIMENTAL && KEYS && CRYPTO
1105 help
1106 Encrypted filesystem that operates on the VFS layer. See
1107 <file:Documentation/ecryptfs.txt> to learn more about
1108 eCryptfs. Userspace components are required and can be
1109 obtained from <http://ecryptfs.sf.net>.
1110
1111 To compile this file system support as a module, choose M here: the
1112 module will be called ecryptfs.
1113
Linus Torvalds1da177e2005-04-16 15:20:36 -07001114config HFS_FS
1115 tristate "Apple Macintosh file system support (EXPERIMENTAL)"
David Howells93614012006-09-30 20:45:40 +02001116 depends on BLOCK && EXPERIMENTAL
Lennert Buytenhek878129a2005-11-07 00:59:18 -08001117 select NLS
Linus Torvalds1da177e2005-04-16 15:20:36 -07001118 help
1119 If you say Y here, you will be able to mount Macintosh-formatted
1120 floppy disks and hard drive partitions with full read-write access.
1121 Please read <file:fs/hfs/HFS.txt> to learn about the available mount
1122 options.
1123
1124 To compile this file system support as a module, choose M here: the
1125 module will be called hfs.
1126
1127config HFSPLUS_FS
1128 tristate "Apple Extended HFS file system support"
David Howells93614012006-09-30 20:45:40 +02001129 depends on BLOCK
Linus Torvalds1da177e2005-04-16 15:20:36 -07001130 select NLS
1131 select NLS_UTF8
1132 help
1133 If you say Y here, you will be able to mount extended format
1134 Macintosh-formatted hard drive partitions with full read-write access.
1135
1136 This file system is often called HFS+ and was introduced with
1137 MacOS 8. It includes all Mac specific filesystem data such as
1138 data forks and creator codes, but it also has several UNIX
1139 style features such as file ownership and permissions.
1140
1141config BEFS_FS
1142 tristate "BeOS file system (BeFS) support (read only) (EXPERIMENTAL)"
David Howells93614012006-09-30 20:45:40 +02001143 depends on BLOCK && EXPERIMENTAL
Linus Torvalds1da177e2005-04-16 15:20:36 -07001144 select NLS
1145 help
1146 The BeOS File System (BeFS) is the native file system of Be, Inc's
1147 BeOS. Notable features include support for arbitrary attributes
Matt LaPlante3cb2fcc2006-11-30 05:22:59 +01001148 on files and directories, and database-like indices on selected
Linus Torvalds1da177e2005-04-16 15:20:36 -07001149 attributes. (Also note that this driver doesn't make those features
1150 available at this time). It is a 64 bit filesystem, so it supports
Matt LaPlante44c09202006-10-03 22:34:14 +02001151 extremely large volumes and files.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001152
1153 If you use this filesystem, you should also say Y to at least one
1154 of the NLS (native language support) options below.
1155
1156 If you don't know what this is about, say N.
1157
1158 To compile this as a module, choose M here: the module will be
1159 called befs.
1160
1161config BEFS_DEBUG
1162 bool "Debug BeFS"
1163 depends on BEFS_FS
1164 help
1165 If you say Y here, you can use the 'debug' mount option to enable
1166 debugging output from the driver.
1167
1168config BFS_FS
1169 tristate "BFS file system support (EXPERIMENTAL)"
David Howells93614012006-09-30 20:45:40 +02001170 depends on BLOCK && EXPERIMENTAL
Linus Torvalds1da177e2005-04-16 15:20:36 -07001171 help
1172 Boot File System (BFS) is a file system used under SCO UnixWare to
1173 allow the bootloader access to the kernel image and other important
1174 files during the boot process. It is usually mounted under /stand
1175 and corresponds to the slice marked as "STAND" in the UnixWare
1176 partition. You should say Y if you want to read or write the files
1177 on your /stand slice from within Linux. You then also need to say Y
1178 to "UnixWare slices support", below. More information about the BFS
1179 file system is contained in the file
1180 <file:Documentation/filesystems/bfs.txt>.
1181
1182 If you don't know what this is about, say N.
1183
1184 To compile this as a module, choose M here: the module will be called
1185 bfs. Note that the file system of your root partition (the one
1186 containing the directory /) cannot be compiled as a module.
1187
1188
1189
1190config EFS_FS
1191 tristate "EFS file system support (read only) (EXPERIMENTAL)"
David Howells93614012006-09-30 20:45:40 +02001192 depends on BLOCK && EXPERIMENTAL
Linus Torvalds1da177e2005-04-16 15:20:36 -07001193 help
1194 EFS is an older file system used for non-ISO9660 CD-ROMs and hard
1195 disk partitions by SGI's IRIX operating system (IRIX 6.0 and newer
1196 uses the XFS file system for hard disk partitions however).
1197
1198 This implementation only offers read-only access. If you don't know
1199 what all this is about, it's safe to say N. For more information
1200 about EFS see its home page at <http://aeschi.ch.eu.org/efs/>.
1201
1202 To compile the EFS file system support as a module, choose M here: the
1203 module will be called efs.
1204
1205config JFFS_FS
1206 tristate "Journalling Flash File System (JFFS) support"
David Howells93614012006-09-30 20:45:40 +02001207 depends on MTD && BLOCK
Linus Torvalds1da177e2005-04-16 15:20:36 -07001208 help
Matt LaPlantecc2e2762006-10-03 22:22:29 +02001209 JFFS is the Journalling Flash File System developed by Axis
Linus Torvalds1da177e2005-04-16 15:20:36 -07001210 Communications in Sweden, aimed at providing a crash/powerdown-safe
1211 file system for disk-less embedded devices. Further information is
1212 available at (<http://developer.axis.com/software/jffs/>).
1213
1214config JFFS_FS_VERBOSE
1215 int "JFFS debugging verbosity (0 = quiet, 3 = noisy)"
1216 depends on JFFS_FS
1217 default "0"
1218 help
1219 Determines the verbosity level of the JFFS debugging messages.
1220
1221config JFFS_PROC_FS
1222 bool "JFFS stats available in /proc filesystem"
1223 depends on JFFS_FS && PROC_FS
1224 help
1225 Enabling this option will cause statistics from mounted JFFS file systems
1226 to be made available to the user in the /proc/fs/jffs/ directory.
1227
1228config JFFS2_FS
1229 tristate "Journalling Flash File System v2 (JFFS2) support"
1230 select CRC32
1231 depends on MTD
1232 help
1233 JFFS2 is the second generation of the Journalling Flash File System
1234 for use on diskless embedded devices. It provides improved wear
1235 levelling, compression and support for hard links. You cannot use
1236 this on normal block devices, only on 'MTD' devices.
1237
1238 Further information on the design and implementation of JFFS2 is
1239 available at <http://sources.redhat.com/jffs2/>.
1240
1241config JFFS2_FS_DEBUG
1242 int "JFFS2 debugging verbosity (0 = quiet, 2 = noisy)"
1243 depends on JFFS2_FS
1244 default "0"
1245 help
1246 This controls the amount of debugging messages produced by the JFFS2
1247 code. Set it to zero for use in production systems. For evaluation,
1248 testing and debugging, it's advisable to set it to one. This will
1249 enable a few assertions and will print debugging messages at the
1250 KERN_DEBUG loglevel, where they won't normally be visible. Level 2
1251 is unlikely to be useful - it enables extra debugging in certain
1252 areas which at one point needed debugging, but when the bugs were
1253 located and fixed, the detailed messages were relegated to level 2.
1254
1255 If reporting bugs, please try to have available a full dump of the
1256 messages at debug level 1 while the misbehaviour was occurring.
1257
David Woodhouse2ba72cb2006-06-18 10:22:40 +01001258config JFFS2_FS_WRITEBUFFER
1259 bool "JFFS2 write-buffering support"
KaiGai Koheiaa98d7c2006-05-13 15:09:47 +09001260 depends on JFFS2_FS
David Woodhouse2ba72cb2006-06-18 10:22:40 +01001261 default y
1262 help
1263 This enables the write-buffering support in JFFS2.
1264
1265 This functionality is required to support JFFS2 on the following
1266 types of flash devices:
1267 - NAND flash
1268 - NOR flash with transparent ECC
1269 - DataFlash
1270
1271config JFFS2_SUMMARY
1272 bool "JFFS2 summary support (EXPERIMENTAL)"
1273 depends on JFFS2_FS && EXPERIMENTAL
1274 default n
1275 help
1276 This feature makes it possible to use summary information
1277 for faster filesystem mount.
1278
1279 The summary information can be inserted into a filesystem image
1280 by the utility 'sumtool'.
1281
1282 If unsure, say 'N'.
1283
1284config JFFS2_FS_XATTR
1285 bool "JFFS2 XATTR support (EXPERIMENTAL)"
KaiGai Kohei04510de2006-06-24 09:21:13 +09001286 depends on JFFS2_FS && EXPERIMENTAL
KaiGai Koheiaa98d7c2006-05-13 15:09:47 +09001287 default n
1288 help
1289 Extended attributes are name:value pairs associated with inodes by
1290 the kernel or by users (see the attr(5) manual page, or visit
1291 <http://acl.bestbits.at/> for details).
1292
1293 If unsure, say N.
1294
1295config JFFS2_FS_POSIX_ACL
1296 bool "JFFS2 POSIX Access Control Lists"
1297 depends on JFFS2_FS_XATTR
1298 default y
1299 select FS_POSIX_ACL
1300 help
1301 Posix Access Control Lists (ACLs) support permissions for users and
1302 groups beyond the owner/group/world scheme.
1303
1304 To learn more about Access Control Lists, visit the Posix ACLs for
1305 Linux website <http://acl.bestbits.at/>.
1306
1307 If you don't know what Access Control Lists are, say N
1308
1309config JFFS2_FS_SECURITY
1310 bool "JFFS2 Security Labels"
1311 depends on JFFS2_FS_XATTR
1312 default y
1313 help
1314 Security labels support alternative access control models
1315 implemented by security modules like SELinux. This option
1316 enables an extended attribute handler for file security
1317 labels in the jffs2 filesystem.
1318
1319 If you are not using a security module that requires using
1320 extended attributes for file security labels, say N.
1321
Linus Torvalds1da177e2005-04-16 15:20:36 -07001322config JFFS2_COMPRESSION_OPTIONS
1323 bool "Advanced compression options for JFFS2"
1324 depends on JFFS2_FS
1325 default n
1326 help
1327 Enabling this option allows you to explicitly choose which
1328 compression modules, if any, are enabled in JFFS2. Removing
1329 compressors and mean you cannot read existing file systems,
1330 and enabling experimental compressors can mean that you
1331 write a file system which cannot be read by a standard kernel.
1332
1333 If unsure, you should _definitely_ say 'N'.
1334
1335config JFFS2_ZLIB
1336 bool "JFFS2 ZLIB compression support" if JFFS2_COMPRESSION_OPTIONS
1337 select ZLIB_INFLATE
1338 select ZLIB_DEFLATE
1339 depends on JFFS2_FS
1340 default y
1341 help
1342 Zlib is designed to be a free, general-purpose, legally unencumbered,
Thomas Gleixner182ec4e2005-11-07 11:16:07 +00001343 lossless data-compression library for use on virtually any computer
Linus Torvalds1da177e2005-04-16 15:20:36 -07001344 hardware and operating system. See <http://www.gzip.org/zlib/> for
1345 further information.
Thomas Gleixner182ec4e2005-11-07 11:16:07 +00001346
Linus Torvalds1da177e2005-04-16 15:20:36 -07001347 Say 'Y' if unsure.
1348
1349config JFFS2_RTIME
1350 bool "JFFS2 RTIME compression support" if JFFS2_COMPRESSION_OPTIONS
1351 depends on JFFS2_FS
1352 default y
1353 help
1354 Rtime does manage to recompress already-compressed data. Say 'Y' if unsure.
1355
1356config JFFS2_RUBIN
1357 bool "JFFS2 RUBIN compression support" if JFFS2_COMPRESSION_OPTIONS
1358 depends on JFFS2_FS
1359 default n
1360 help
1361 RUBINMIPS and DYNRUBIN compressors. Say 'N' if unsure.
1362
1363choice
1364 prompt "JFFS2 default compression mode" if JFFS2_COMPRESSION_OPTIONS
1365 default JFFS2_CMODE_PRIORITY
1366 depends on JFFS2_FS
1367 help
Thomas Gleixner182ec4e2005-11-07 11:16:07 +00001368 You can set here the default compression mode of JFFS2 from
Linus Torvalds1da177e2005-04-16 15:20:36 -07001369 the available compression modes. Don't touch if unsure.
1370
1371config JFFS2_CMODE_NONE
1372 bool "no compression"
1373 help
1374 Uses no compression.
1375
1376config JFFS2_CMODE_PRIORITY
1377 bool "priority"
1378 help
Matt LaPlantecc2e2762006-10-03 22:22:29 +02001379 Tries the compressors in a predefined order and chooses the first
Linus Torvalds1da177e2005-04-16 15:20:36 -07001380 successful one.
1381
1382config JFFS2_CMODE_SIZE
1383 bool "size (EXPERIMENTAL)"
1384 help
Thomas Gleixner182ec4e2005-11-07 11:16:07 +00001385 Tries all compressors and chooses the one which has the smallest
Linus Torvalds1da177e2005-04-16 15:20:36 -07001386 result.
1387
1388endchoice
1389
1390config CRAMFS
1391 tristate "Compressed ROM file system support (cramfs)"
David Howells93614012006-09-30 20:45:40 +02001392 depends on BLOCK
Linus Torvalds1da177e2005-04-16 15:20:36 -07001393 select ZLIB_INFLATE
1394 help
1395 Saying Y here includes support for CramFs (Compressed ROM File
1396 System). CramFs is designed to be a simple, small, and compressed
1397 file system for ROM based embedded systems. CramFs is read-only,
1398 limited to 256MB file systems (with 16MB files), and doesn't support
1399 16/32 bits uid/gid, hard links and timestamps.
1400
1401 See <file:Documentation/filesystems/cramfs.txt> and
1402 <file:fs/cramfs/README> for further information.
1403
1404 To compile this as a module, choose M here: the module will be called
1405 cramfs. Note that the root file system (the one containing the
1406 directory /) cannot be compiled as a module.
1407
1408 If unsure, say N.
1409
1410config VXFS_FS
1411 tristate "FreeVxFS file system support (VERITAS VxFS(TM) compatible)"
David Howells93614012006-09-30 20:45:40 +02001412 depends on BLOCK
Linus Torvalds1da177e2005-04-16 15:20:36 -07001413 help
1414 FreeVxFS is a file system driver that support the VERITAS VxFS(TM)
1415 file system format. VERITAS VxFS(TM) is the standard file system
1416 of SCO UnixWare (and possibly others) and optionally available
1417 for Sunsoft Solaris, HP-UX and many other operating systems.
1418 Currently only readonly access is supported.
1419
1420 NOTE: the file system type as used by mount(1), mount(2) and
1421 fstab(5) is 'vxfs' as it describes the file system format, not
1422 the actual driver.
1423
1424 To compile this as a module, choose M here: the module will be
1425 called freevxfs. If unsure, say N.
1426
1427
1428config HPFS_FS
1429 tristate "OS/2 HPFS file system support"
David Howells93614012006-09-30 20:45:40 +02001430 depends on BLOCK
Linus Torvalds1da177e2005-04-16 15:20:36 -07001431 help
1432 OS/2 is IBM's operating system for PC's, the same as Warp, and HPFS
1433 is the file system used for organizing files on OS/2 hard disk
1434 partitions. Say Y if you want to be able to read files from and
1435 write files to an OS/2 HPFS partition on your hard drive. OS/2
1436 floppies however are in regular MSDOS format, so you don't need this
1437 option in order to be able to read them. Read
1438 <file:Documentation/filesystems/hpfs.txt>.
1439
1440 To compile this file system support as a module, choose M here: the
1441 module will be called hpfs. If unsure, say N.
1442
1443
1444
1445config QNX4FS_FS
1446 tristate "QNX4 file system support (read only)"
David Howells93614012006-09-30 20:45:40 +02001447 depends on BLOCK
Linus Torvalds1da177e2005-04-16 15:20:36 -07001448 help
1449 This is the file system used by the real-time operating systems
1450 QNX 4 and QNX 6 (the latter is also called QNX RTP).
1451 Further information is available at <http://www.qnx.com/>.
1452 Say Y if you intend to mount QNX hard disks or floppies.
1453 Unless you say Y to "QNX4FS read-write support" below, you will
1454 only be able to read these file systems.
1455
1456 To compile this file system support as a module, choose M here: the
1457 module will be called qnx4.
1458
1459 If you don't know whether you need it, then you don't need it:
1460 answer N.
1461
1462config QNX4FS_RW
1463 bool "QNX4FS write support (DANGEROUS)"
1464 depends on QNX4FS_FS && EXPERIMENTAL && BROKEN
1465 help
1466 Say Y if you want to test write support for QNX4 file systems.
1467
1468 It's currently broken, so for now:
1469 answer N.
1470
1471
1472
1473config SYSV_FS
1474 tristate "System V/Xenix/V7/Coherent file system support"
David Howells93614012006-09-30 20:45:40 +02001475 depends on BLOCK
Linus Torvalds1da177e2005-04-16 15:20:36 -07001476 help
1477 SCO, Xenix and Coherent are commercial Unix systems for Intel
1478 machines, and Version 7 was used on the DEC PDP-11. Saying Y
1479 here would allow you to read from their floppies and hard disk
1480 partitions.
1481
1482 If you have floppies or hard disk partitions like that, it is likely
1483 that they contain binaries from those other Unix systems; in order
Matt LaPlantecab00892006-10-03 22:36:44 +02001484 to run these binaries, you will want to install linux-abi which is
Linus Torvalds1da177e2005-04-16 15:20:36 -07001485 a set of kernel modules that lets you run SCO, Xenix, Wyse,
1486 UnixWare, Dell Unix and System V programs under Linux. It is
1487 available via FTP (user: ftp) from
1488 <ftp://ftp.openlinux.org/pub/people/hch/linux-abi/>).
1489 NOTE: that will work only for binaries from Intel-based systems;
1490 PDP ones will have to wait until somebody ports Linux to -11 ;-)
1491
1492 If you only intend to mount files from some other Unix over the
1493 network using NFS, you don't need the System V file system support
1494 (but you need NFS file system support obviously).
1495
1496 Note that this option is generally not needed for floppies, since a
1497 good portable way to transport files and directories between unixes
1498 (and even other operating systems) is given by the tar program ("man
1499 tar" or preferably "info tar"). Note also that this option has
1500 nothing whatsoever to do with the option "System V IPC". Read about
1501 the System V file system in
1502 <file:Documentation/filesystems/sysv-fs.txt>.
1503 Saying Y here will enlarge your kernel by about 27 KB.
1504
1505 To compile this as a module, choose M here: the module will be called
1506 sysv.
1507
1508 If you haven't heard about all of this before, it's safe to say N.
1509
1510
1511
1512config UFS_FS
1513 tristate "UFS file system support (read only)"
David Howells93614012006-09-30 20:45:40 +02001514 depends on BLOCK
Linus Torvalds1da177e2005-04-16 15:20:36 -07001515 help
1516 BSD and derivate versions of Unix (such as SunOS, FreeBSD, NetBSD,
1517 OpenBSD and NeXTstep) use a file system called UFS. Some System V
1518 Unixes can create and mount hard disk partitions and diskettes using
1519 this file system as well. Saying Y here will allow you to read from
1520 these partitions; if you also want to write to them, say Y to the
1521 experimental "UFS file system write support", below. Please read the
1522 file <file:Documentation/filesystems/ufs.txt> for more information.
1523
1524 The recently released UFS2 variant (used in FreeBSD 5.x) is
1525 READ-ONLY supported.
1526
1527 If you only intend to mount files from some other Unix over the
1528 network using NFS, you don't need the UFS file system support (but
1529 you need NFS file system support obviously).
1530
1531 Note that this option is generally not needed for floppies, since a
1532 good portable way to transport files and directories between unixes
1533 (and even other operating systems) is given by the tar program ("man
1534 tar" or preferably "info tar").
1535
1536 When accessing NeXTstep files, you may need to convert them from the
1537 NeXT character set to the Latin1 character set; use the program
1538 recode ("info recode") for this purpose.
1539
1540 To compile the UFS file system support as a module, choose M here: the
1541 module will be called ufs.
1542
1543 If you haven't heard about all of this before, it's safe to say N.
1544
1545config UFS_FS_WRITE
1546 bool "UFS file system write support (DANGEROUS)"
Evgeniy Dushistov5afb3142006-06-25 05:47:24 -07001547 depends on UFS_FS && EXPERIMENTAL
Linus Torvalds1da177e2005-04-16 15:20:36 -07001548 help
1549 Say Y here if you want to try writing to UFS partitions. This is
1550 experimental, so you should back up your UFS partitions beforehand.
1551
Evgeniy Dushistovabf5d152006-06-25 05:47:24 -07001552config UFS_DEBUG
1553 bool "UFS debugging"
1554 depends on UFS_FS
1555 help
1556 If you are experiencing any problems with the UFS filesystem, say
1557 Y here. This will result in _many_ additional debugging messages to be
1558 written to the system log.
1559
Linus Torvalds1da177e2005-04-16 15:20:36 -07001560endmenu
1561
1562menu "Network File Systems"
1563 depends on NET
1564
1565config NFS_FS
1566 tristate "NFS file system support"
1567 depends on INET
1568 select LOCKD
1569 select SUNRPC
Andreas Gruenbacherb7fa0552005-06-22 17:16:27 +00001570 select NFS_ACL_SUPPORT if NFS_V3_ACL
Linus Torvalds1da177e2005-04-16 15:20:36 -07001571 help
1572 If you are connected to some other (usually local) Unix computer
1573 (using SLIP, PLIP, PPP or Ethernet) and want to mount files residing
1574 on that computer (the NFS server) using the Network File Sharing
1575 protocol, say Y. "Mounting files" means that the client can access
1576 the files with usual UNIX commands as if they were sitting on the
1577 client's hard disk. For this to work, the server must run the
1578 programs nfsd and mountd (but does not need to have NFS file system
1579 support enabled in its kernel). NFS is explained in the Network
1580 Administrator's Guide, available from
1581 <http://www.tldp.org/docs.html#guide>, on its man page: "man
1582 nfs", and in the NFS-HOWTO.
1583
1584 A superior but less widely used alternative to NFS is provided by
1585 the Coda file system; see "Coda file system support" below.
1586
1587 If you say Y here, you should have said Y to TCP/IP networking also.
1588 This option would enlarge your kernel by about 27 KB.
1589
1590 To compile this file system support as a module, choose M here: the
1591 module will be called nfs.
1592
1593 If you are configuring a diskless machine which will mount its root
1594 file system over NFS at boot time, say Y here and to "Kernel
1595 level IP autoconfiguration" above and to "Root file system on NFS"
1596 below. You cannot compile this driver as a module in this case.
1597 There are two packages designed for booting diskless machines over
1598 the net: netboot, available from
1599 <http://ftp1.sourceforge.net/netboot/>, and Etherboot,
1600 available from <http://ftp1.sourceforge.net/etherboot/>.
1601
1602 If you don't know what all this is about, say N.
1603
1604config NFS_V3
1605 bool "Provide NFSv3 client support"
1606 depends on NFS_FS
1607 help
1608 Say Y here if you want your NFS client to be able to speak version
1609 3 of the NFS protocol.
1610
1611 If unsure, say Y.
1612
Andreas Gruenbacherb7fa0552005-06-22 17:16:27 +00001613config NFS_V3_ACL
1614 bool "Provide client support for the NFSv3 ACL protocol extension"
1615 depends on NFS_V3
1616 help
1617 Implement the NFSv3 ACL protocol extension for manipulating POSIX
1618 Access Control Lists. The server should also be compiled with
1619 the NFSv3 ACL protocol extension; see the CONFIG_NFSD_V3_ACL option.
1620
1621 If unsure, say N.
1622
Linus Torvalds1da177e2005-04-16 15:20:36 -07001623config NFS_V4
1624 bool "Provide NFSv4 client support (EXPERIMENTAL)"
1625 depends on NFS_FS && EXPERIMENTAL
1626 select RPCSEC_GSS_KRB5
1627 help
1628 Say Y here if you want your NFS client to be able to speak the newer
1629 version 4 of the NFS protocol.
1630
1631 Note: Requires auxiliary userspace daemons which may be found on
1632 http://www.citi.umich.edu/projects/nfsv4/
1633
1634 If unsure, say N.
1635
1636config NFS_DIRECTIO
Chuck Lever026ed5c2006-09-20 14:33:07 -04001637 bool "Allow direct I/O on NFS files"
1638 depends on NFS_FS
Linus Torvalds1da177e2005-04-16 15:20:36 -07001639 help
1640 This option enables applications to perform uncached I/O on files
1641 in NFS file systems using the O_DIRECT open() flag. When O_DIRECT
1642 is set for a file, its data is not cached in the system's page
1643 cache. Data is moved to and from user-level application buffers
1644 directly. Unlike local disk-based file systems, NFS O_DIRECT has
1645 no alignment restrictions.
1646
1647 Unless your program is designed to use O_DIRECT properly, you are
1648 much better off allowing the NFS client to manage data caching for
1649 you. Misusing O_DIRECT can cause poor server performance or network
1650 storms. This kernel build option defaults OFF to avoid exposing
1651 system administrators unwittingly to a potentially hazardous
1652 feature.
1653
1654 For more details on NFS O_DIRECT, see fs/nfs/direct.c.
1655
1656 If unsure, say N. This reduces the size of the NFS client, and
1657 causes open() to return EINVAL if a file residing in NFS is
1658 opened with the O_DIRECT flag.
1659
1660config NFSD
1661 tristate "NFS server support"
1662 depends on INET
1663 select LOCKD
1664 select SUNRPC
1665 select EXPORTFS
Herbert Xuf05e15b2006-06-26 00:25:39 -07001666 select NFSD_V2_ACL if NFSD_V3_ACL
1667 select NFS_ACL_SUPPORT if NFSD_V2_ACL
1668 select NFSD_TCP if NFSD_V4
1669 select CRYPTO_MD5 if NFSD_V4
1670 select CRYPTO if NFSD_V4
1671 select FS_POSIX_ACL if NFSD_V4
Linus Torvalds1da177e2005-04-16 15:20:36 -07001672 help
1673 If you want your Linux box to act as an NFS *server*, so that other
1674 computers on your local network which support NFS can access certain
1675 directories on your box transparently, you have two options: you can
1676 use the self-contained user space program nfsd, in which case you
1677 should say N here, or you can say Y and use the kernel based NFS
1678 server. The advantage of the kernel based solution is that it is
1679 faster.
1680
1681 In either case, you will need support software; the respective
1682 locations are given in the file <file:Documentation/Changes> in the
1683 NFS section.
1684
1685 If you say Y here, you will get support for version 2 of the NFS
1686 protocol (NFSv2). If you also want NFSv3, say Y to the next question
1687 as well.
1688
1689 Please read the NFS-HOWTO, available from
1690 <http://www.tldp.org/docs.html#howto>.
1691
1692 To compile the NFS server support as a module, choose M here: the
1693 module will be called nfsd. If unsure, say N.
1694
Andreas Gruenbachera257cdd2005-06-22 17:16:26 +00001695config NFSD_V2_ACL
1696 bool
1697 depends on NFSD
1698
Linus Torvalds1da177e2005-04-16 15:20:36 -07001699config NFSD_V3
1700 bool "Provide NFSv3 server support"
1701 depends on NFSD
1702 help
1703 If you would like to include the NFSv3 server as well as the NFSv2
1704 server, say Y here. If unsure, say Y.
1705
Andreas Gruenbachera257cdd2005-06-22 17:16:26 +00001706config NFSD_V3_ACL
1707 bool "Provide server support for the NFSv3 ACL protocol extension"
1708 depends on NFSD_V3
Andreas Gruenbachera257cdd2005-06-22 17:16:26 +00001709 help
1710 Implement the NFSv3 ACL protocol extension for manipulating POSIX
1711 Access Control Lists on exported file systems. NFS clients should
1712 be compiled with the NFSv3 ACL protocol extension; see the
1713 CONFIG_NFS_V3_ACL option. If unsure, say N.
1714
Linus Torvalds1da177e2005-04-16 15:20:36 -07001715config NFSD_V4
1716 bool "Provide NFSv4 server support (EXPERIMENTAL)"
1717 depends on NFSD_V3 && EXPERIMENTAL
Linus Torvalds1da177e2005-04-16 15:20:36 -07001718 help
1719 If you would like to include the NFSv4 server as well as the NFSv2
1720 and NFSv3 servers, say Y here. This feature is experimental, and
1721 should only be used if you are interested in helping to test NFSv4.
1722 If unsure, say N.
1723
1724config NFSD_TCP
1725 bool "Provide NFS server over TCP support"
1726 depends on NFSD
1727 default y
1728 help
1729 If you want your NFS server to support TCP connections, say Y here.
1730 TCP connections usually perform better than the default UDP when
1731 the network is lossy or congested. If unsure, say Y.
1732
1733config ROOT_NFS
1734 bool "Root file system on NFS"
1735 depends on NFS_FS=y && IP_PNP
1736 help
1737 If you want your Linux box to mount its whole root file system (the
1738 one containing the directory /) from some other computer over the
1739 net via NFS (presumably because your box doesn't have a hard disk),
1740 say Y. Read <file:Documentation/nfsroot.txt> for details. It is
1741 likely that in this case, you also want to say Y to "Kernel level IP
1742 autoconfiguration" so that your box can discover its network address
1743 at boot time.
1744
1745 Most people say N here.
1746
1747config LOCKD
1748 tristate
1749
1750config LOCKD_V4
1751 bool
1752 depends on NFSD_V3 || NFS_V3
1753 default y
1754
1755config EXPORTFS
1756 tristate
1757
Andreas Gruenbachera257cdd2005-06-22 17:16:26 +00001758config NFS_ACL_SUPPORT
1759 tristate
1760 select FS_POSIX_ACL
1761
1762config NFS_COMMON
1763 bool
1764 depends on NFSD || NFS_FS
1765 default y
1766
Linus Torvalds1da177e2005-04-16 15:20:36 -07001767config SUNRPC
1768 tristate
1769
1770config SUNRPC_GSS
1771 tristate
1772
1773config RPCSEC_GSS_KRB5
1774 tristate "Secure RPC: Kerberos V mechanism (EXPERIMENTAL)"
1775 depends on SUNRPC && EXPERIMENTAL
1776 select SUNRPC_GSS
1777 select CRYPTO
1778 select CRYPTO_MD5
1779 select CRYPTO_DES
Patrick McHardybcbaecb2006-10-25 16:49:36 +10001780 select CRYPTO_CBC
Linus Torvalds1da177e2005-04-16 15:20:36 -07001781 help
1782 Provides for secure RPC calls by means of a gss-api
1783 mechanism based on Kerberos V5. This is required for
1784 NFSv4.
1785
1786 Note: Requires an auxiliary userspace daemon which may be found on
1787 http://www.citi.umich.edu/projects/nfsv4/
1788
1789 If unsure, say N.
1790
1791config RPCSEC_GSS_SPKM3
1792 tristate "Secure RPC: SPKM3 mechanism (EXPERIMENTAL)"
1793 depends on SUNRPC && EXPERIMENTAL
1794 select SUNRPC_GSS
1795 select CRYPTO
1796 select CRYPTO_MD5
1797 select CRYPTO_DES
J. Bruce Fieldsdf6db302006-03-20 23:25:10 -05001798 select CRYPTO_CAST5
Patrick McHardybcbaecb2006-10-25 16:49:36 +10001799 select CRYPTO_CBC
Linus Torvalds1da177e2005-04-16 15:20:36 -07001800 help
1801 Provides for secure RPC calls by means of a gss-api
1802 mechanism based on the SPKM3 public-key mechanism.
1803
1804 Note: Requires an auxiliary userspace daemon which may be found on
1805 http://www.citi.umich.edu/projects/nfsv4/
1806
1807 If unsure, say N.
1808
1809config SMB_FS
1810 tristate "SMB file system support (to mount Windows shares etc.)"
1811 depends on INET
1812 select NLS
1813 help
1814 SMB (Server Message Block) is the protocol Windows for Workgroups
1815 (WfW), Windows 95/98, Windows NT and OS/2 Lan Manager use to share
1816 files and printers over local networks. Saying Y here allows you to
1817 mount their file systems (often called "shares" in this context) and
1818 access them just like any other Unix directory. Currently, this
1819 works only if the Windows machines use TCP/IP as the underlying
1820 transport protocol, and not NetBEUI. For details, read
1821 <file:Documentation/filesystems/smbfs.txt> and the SMB-HOWTO,
1822 available from <http://www.tldp.org/docs.html#howto>.
1823
1824 Note: if you just want your box to act as an SMB *server* and make
1825 files and printing services available to Windows clients (which need
1826 to have a TCP/IP stack), you don't need to say Y here; you can use
1827 the program SAMBA (available from <ftp://ftp.samba.org/pub/samba/>)
1828 for that.
1829
1830 General information about how to connect Linux, Windows machines and
1831 Macs is on the WWW at <http://www.eats.com/linux_mac_win.html>.
1832
1833 To compile the SMB support as a module, choose M here: the module will
1834 be called smbfs. Most people say N, however.
1835
1836config SMB_NLS_DEFAULT
1837 bool "Use a default NLS"
1838 depends on SMB_FS
1839 help
1840 Enabling this will make smbfs use nls translations by default. You
1841 need to specify the local charset (CONFIG_NLS_DEFAULT) in the nls
1842 settings and you need to give the default nls for the SMB server as
1843 CONFIG_SMB_NLS_REMOTE.
1844
1845 The nls settings can be changed at mount time, if your smbmount
1846 supports that, using the codepage and iocharset parameters.
1847
1848 smbmount from samba 2.2.0 or later supports this.
1849
1850config SMB_NLS_REMOTE
1851 string "Default Remote NLS Option"
1852 depends on SMB_NLS_DEFAULT
1853 default "cp437"
1854 help
1855 This setting allows you to specify a default value for which
1856 codepage the server uses. If this field is left blank no
1857 translations will be done by default. The local codepage/charset
1858 default to CONFIG_NLS_DEFAULT.
1859
1860 The nls settings can be changed at mount time, if your smbmount
1861 supports that, using the codepage and iocharset parameters.
1862
1863 smbmount from samba 2.2.0 or later supports this.
1864
1865config CIFS
1866 tristate "CIFS support (advanced network filesystem for Samba, Window and other CIFS compliant servers)"
1867 depends on INET
1868 select NLS
1869 help
1870 This is the client VFS module for the Common Internet File System
1871 (CIFS) protocol which is the successor to the Server Message Block
1872 (SMB) protocol, the native file sharing mechanism for most early
1873 PC operating systems. The CIFS protocol is fully supported by
1874 file servers such as Windows 2000 (including Windows 2003, NT 4
1875 and Windows XP) as well by Samba (which provides excellent CIFS
Steve Frenchec58ef02005-11-04 09:44:33 -08001876 server support for Linux and many other operating systems). Limited
1877 support for Windows ME and similar servers is provided as well.
1878 You must use the smbfs client filesystem to access older SMB servers
1879 such as OS/2 and DOS.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001880
1881 The intent of the cifs module is to provide an advanced
1882 network file system client for mounting to CIFS compliant servers,
1883 including support for dfs (hierarchical name space), secure per-user
1884 session establishment, safe distributed caching (oplock), optional
1885 packet signing, Unicode and other internationalization improvements,
1886 and optional Winbind (nsswitch) integration. You do not need to enable
1887 cifs if running only a (Samba) server. It is possible to enable both
1888 smbfs and cifs (e.g. if you are using CIFS for accessing Windows 2003
1889 and Samba 3 servers, and smbfs for accessing old servers). If you need
Steve Frenchec58ef02005-11-04 09:44:33 -08001890 to mount to Samba or Windows from this machine, say Y.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001891
1892config CIFS_STATS
1893 bool "CIFS statistics"
1894 depends on CIFS
1895 help
1896 Enabling this option will cause statistics for each server share
1897 mounted by the cifs client to be displayed in /proc/fs/cifs/Stats
1898
Steve Frenchec58ef02005-11-04 09:44:33 -08001899config CIFS_STATS2
Steve French39798772006-05-31 22:40:51 +00001900 bool "Extended statistics"
Steve Frenchec58ef02005-11-04 09:44:33 -08001901 depends on CIFS_STATS
1902 help
1903 Enabling this option will allow more detailed statistics on SMB
1904 request timing to be displayed in /proc/fs/cifs/DebugData and also
1905 allow optional logging of slow responses to dmesg (depending on the
1906 value of /proc/fs/cifs/cifsFYI, see fs/cifs/README for more details).
1907 These additional statistics may have a minor effect on performance
1908 and memory utilization.
1909
1910 Unless you are a developer or are doing network performance analysis
1911 or tuning, say N.
1912
Steve French39798772006-05-31 22:40:51 +00001913config CIFS_WEAK_PW_HASH
1914 bool "Support legacy servers which use weaker LANMAN security"
1915 depends on CIFS
1916 help
1917 Modern CIFS servers including Samba and most Windows versions
1918 (since 1997) support stronger NTLM (and even NTLMv2 and Kerberos)
1919 security mechanisms. These hash the password more securely
1920 than the mechanisms used in the older LANMAN version of the
1921 SMB protocol needed to establish sessions with old SMB servers.
1922
1923 Enabling this option allows the cifs module to mount to older
1924 LANMAN based servers such as OS/2 and Windows 95, but such
1925 mounts may be less secure than mounts using NTLM or more recent
1926 security mechanisms if you are on a public network. Unless you
1927 have a need to access old SMB servers (and are on a private
1928 network) you probably want to say N. Even if this support
1929 is enabled in the kernel build, they will not be used
1930 automatically. At runtime LANMAN mounts are disabled but
1931 can be set to required (or optional) either in
1932 /proc/fs/cifs (see fs/cifs/README for more detail) or via an
1933 option on the mount command. This support is disabled by
1934 default in order to reduce the possibility of a downgrade
1935 attack.
1936
1937 If unsure, say N.
1938
Linus Torvalds1da177e2005-04-16 15:20:36 -07001939config CIFS_XATTR
Steve Frenchec58ef02005-11-04 09:44:33 -08001940 bool "CIFS extended attributes"
Linus Torvalds1da177e2005-04-16 15:20:36 -07001941 depends on CIFS
1942 help
1943 Extended attributes are name:value pairs associated with inodes by
1944 the kernel or by users (see the attr(5) manual page, or visit
1945 <http://acl.bestbits.at/> for details). CIFS maps the name of
1946 extended attributes beginning with the user namespace prefix
1947 to SMB/CIFS EAs. EAs are stored on Windows servers without the
1948 user namespace prefix, but their names are seen by Linux cifs clients
1949 prefaced by the user namespace prefix. The system namespace
1950 (used by some filesystems to store ACLs) is not supported at
1951 this time.
Steve Frenchec58ef02005-11-04 09:44:33 -08001952
Linus Torvalds1da177e2005-04-16 15:20:36 -07001953 If unsure, say N.
1954
1955config CIFS_POSIX
Steve Frenchec58ef02005-11-04 09:44:33 -08001956 bool "CIFS POSIX Extensions"
Linus Torvalds1da177e2005-04-16 15:20:36 -07001957 depends on CIFS_XATTR
1958 help
1959 Enabling this option will cause the cifs client to attempt to
1960 negotiate a newer dialect with servers, such as Samba 3.0.5
1961 or later, that optionally can handle more POSIX like (rather
1962 than Windows like) file behavior. It also enables
1963 support for POSIX ACLs (getfacl and setfacl) to servers
1964 (such as Samba 3.10 and later) which can negotiate
1965 CIFS POSIX ACL support. If unsure, say N.
1966
Steve French39798772006-05-31 22:40:51 +00001967config CIFS_DEBUG2
Steve French3856a9d2006-06-01 19:38:46 +00001968 bool "Enable additional CIFS debugging routines"
Steve French8ba10ab2006-07-08 02:17:40 +00001969 depends on CIFS
Steve French39798772006-05-31 22:40:51 +00001970 help
1971 Enabling this option adds a few more debugging routines
1972 to the cifs code which slightly increases the size of
1973 the cifs module and can cause additional logging of debug
1974 messages in some error paths, slowing performance. This
1975 option can be turned off unless you are debugging
1976 cifs problems. If unsure, say N.
1977
Linus Torvalds1da177e2005-04-16 15:20:36 -07001978config CIFS_EXPERIMENTAL
1979 bool "CIFS Experimental Features (EXPERIMENTAL)"
Steve Frenchcb9dbff2005-11-02 11:37:15 -08001980 depends on CIFS && EXPERIMENTAL
Linus Torvalds1da177e2005-04-16 15:20:36 -07001981 help
Steve Frenchec58ef02005-11-04 09:44:33 -08001982 Enables cifs features under testing. These features are
1983 experimental and currently include support for writepages
1984 (multipage writebehind performance improvements) and directory
1985 change notification ie fcntl(F_DNOTIFY) as well as some security
1986 improvements. Some also depend on setting at runtime the
1987 pseudo-file /proc/fs/cifs/Experimental (which is disabled by
1988 default). See the file fs/cifs/README for more details.
1989
1990 If unsure, say N.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001991
Steve Frencha2653eb2005-11-10 15:33:38 -08001992config CIFS_UPCALL
Steve French39798772006-05-31 22:40:51 +00001993 bool "Kerberos/SPNEGO advanced session setup (EXPERIMENTAL)"
Steve Frencha2653eb2005-11-10 15:33:38 -08001994 depends on CIFS_EXPERIMENTAL
Andrew Morton230a0392006-10-12 15:07:55 +00001995 depends on CONNECTOR
Steve Frencha2653eb2005-11-10 15:33:38 -08001996 help
1997 Enables an upcall mechanism for CIFS which will be used to contact
1998 userspace helper utilities to provide SPNEGO packaged Kerberos
1999 tickets which are needed to mount to certain secure servers
Steve French1b397f42005-11-10 19:36:39 -08002000 (for which more secure Kerberos authentication is required). If
2001 unsure, say N.
Steve Frencha2653eb2005-11-10 15:33:38 -08002002
Linus Torvalds1da177e2005-04-16 15:20:36 -07002003config NCP_FS
2004 tristate "NCP file system support (to mount NetWare volumes)"
2005 depends on IPX!=n || INET
2006 help
2007 NCP (NetWare Core Protocol) is a protocol that runs over IPX and is
2008 used by Novell NetWare clients to talk to file servers. It is to
2009 IPX what NFS is to TCP/IP, if that helps. Saying Y here allows you
2010 to mount NetWare file server volumes and to access them just like
2011 any other Unix directory. For details, please read the file
2012 <file:Documentation/filesystems/ncpfs.txt> in the kernel source and
2013 the IPX-HOWTO from <http://www.tldp.org/docs.html#howto>.
2014
2015 You do not have to say Y here if you want your Linux box to act as a
2016 file *server* for Novell NetWare clients.
2017
2018 General information about how to connect Linux, Windows machines and
2019 Macs is on the WWW at <http://www.eats.com/linux_mac_win.html>.
2020
2021 To compile this as a module, choose M here: the module will be called
2022 ncpfs. Say N unless you are connected to a Novell network.
2023
2024source "fs/ncpfs/Kconfig"
2025
2026config CODA_FS
2027 tristate "Coda file system support (advanced network fs)"
2028 depends on INET
2029 help
2030 Coda is an advanced network file system, similar to NFS in that it
2031 enables you to mount file systems of a remote server and access them
2032 with regular Unix commands as if they were sitting on your hard
2033 disk. Coda has several advantages over NFS: support for
2034 disconnected operation (e.g. for laptops), read/write server
2035 replication, security model for authentication and encryption,
2036 persistent client caches and write back caching.
2037
2038 If you say Y here, your Linux box will be able to act as a Coda
2039 *client*. You will need user level code as well, both for the
2040 client and server. Servers are currently user level, i.e. they need
2041 no kernel support. Please read
2042 <file:Documentation/filesystems/coda.txt> and check out the Coda
2043 home page <http://www.coda.cs.cmu.edu/>.
2044
2045 To compile the coda client support as a module, choose M here: the
2046 module will be called coda.
2047
2048config CODA_FS_OLD_API
2049 bool "Use 96-bit Coda file identifiers"
2050 depends on CODA_FS
2051 help
2052 A new kernel-userspace API had to be introduced for Coda v6.0
2053 to support larger 128-bit file identifiers as needed by the
2054 new realms implementation.
2055
2056 However this new API is not backward compatible with older
2057 clients. If you really need to run the old Coda userspace
2058 cache manager then say Y.
2059
2060 For most cases you probably want to say N.
2061
2062config AFS_FS
David Howells64aaa4f2006-11-16 01:19:27 -08002063 tristate "Andrew File System support (AFS) (EXPERIMENTAL)"
Linus Torvalds1da177e2005-04-16 15:20:36 -07002064 depends on INET && EXPERIMENTAL
2065 select RXRPC
2066 help
2067 If you say Y here, you will get an experimental Andrew File System
2068 driver. It currently only supports unsecured read-only AFS access.
2069
Matt LaPlantecc2e2762006-10-03 22:22:29 +02002070 See <file:Documentation/filesystems/afs.txt> for more information.
Linus Torvalds1da177e2005-04-16 15:20:36 -07002071
2072 If unsure, say N.
2073
2074config RXRPC
2075 tristate
2076
Eric Van Hensbergen93fa58c2005-09-09 13:04:18 -07002077config 9P_FS
2078 tristate "Plan 9 Resource Sharing Support (9P2000) (Experimental)"
2079 depends on INET && EXPERIMENTAL
2080 help
2081 If you say Y here, you will get experimental support for
2082 Plan 9 resource sharing via the 9P2000 protocol.
2083
2084 See <http://v9fs.sf.net> for more information.
2085
2086 If unsure, say N.
2087
Linus Torvalds1da177e2005-04-16 15:20:36 -07002088endmenu
2089
David Howells93614012006-09-30 20:45:40 +02002090if BLOCK
Linus Torvalds1da177e2005-04-16 15:20:36 -07002091menu "Partition Types"
2092
2093source "fs/partitions/Kconfig"
2094
2095endmenu
David Howells93614012006-09-30 20:45:40 +02002096endif
Linus Torvalds1da177e2005-04-16 15:20:36 -07002097
2098source "fs/nls/Kconfig"
David Teiglande7fd4172006-01-18 09:30:29 +00002099source "fs/dlm/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -07002100
2101endmenu
2102