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Linus Torvalds1da177e2005-04-16 15:20:36 -07001#
2# File system configuration
3#
4
5menu "File systems"
6
7config EXT2_FS
8 tristate "Second extended fs support"
9 help
10 Ext2 is a standard Linux file system for hard disks.
11
12 To compile this file system support as a module, choose M here: the
13 module will be called ext2. Be aware however that the file system
14 of your root partition (the one containing the directory /) cannot
15 be compiled as a module, and so this could be dangerous.
16
17 If unsure, say Y.
18
19config EXT2_FS_XATTR
20 bool "Ext2 extended attributes"
21 depends on EXT2_FS
22 help
23 Extended attributes are name:value pairs associated with inodes by
24 the kernel or by users (see the attr(5) manual page, or visit
25 <http://acl.bestbits.at/> for details).
26
27 If unsure, say N.
28
29config EXT2_FS_POSIX_ACL
30 bool "Ext2 POSIX Access Control Lists"
31 depends on EXT2_FS_XATTR
32 help
33 Posix Access Control Lists (ACLs) support permissions for users and
34 groups beyond the owner/group/world scheme.
35
36 To learn more about Access Control Lists, visit the Posix ACLs for
37 Linux website <http://acl.bestbits.at/>.
38
39 If you don't know what Access Control Lists are, say N
40
41config EXT2_FS_SECURITY
42 bool "Ext2 Security Labels"
43 depends on EXT2_FS_XATTR
44 help
45 Security labels support alternative access control models
46 implemented by security modules like SELinux. This option
47 enables an extended attribute handler for file security
48 labels in the ext2 filesystem.
49
50 If you are not using a security module that requires using
51 extended attributes for file security labels, say N.
52
53config EXT3_FS
54 tristate "Ext3 journalling file system support"
55 help
56 This is the journaling version of the Second extended file system
57 (often called ext3), the de facto standard Linux file system
58 (method to organize files on a storage device) for hard disks.
59
60 The journaling code included in this driver means you do not have
61 to run e2fsck (file system checker) on your file systems after a
62 crash. The journal keeps track of any changes that were being made
63 at the time the system crashed, and can ensure that your file system
64 is consistent without the need for a lengthy check.
65
66 Other than adding the journal to the file system, the on-disk format
67 of ext3 is identical to ext2. It is possible to freely switch
68 between using the ext3 driver and the ext2 driver, as long as the
69 file system has been cleanly unmounted, or e2fsck is run on the file
70 system.
71
72 To add a journal on an existing ext2 file system or change the
73 behavior of ext3 file systems, you can use the tune2fs utility ("man
74 tune2fs"). To modify attributes of files and directories on ext3
75 file systems, use chattr ("man chattr"). You need to be using
76 e2fsprogs version 1.20 or later in order to create ext3 journals
77 (available at <http://sourceforge.net/projects/e2fsprogs/>).
78
79 To compile this file system support as a module, choose M here: the
80 module will be called ext3. Be aware however that the file system
81 of your root partition (the one containing the directory /) cannot
82 be compiled as a module, and so this may be dangerous.
83
84config EXT3_FS_XATTR
85 bool "Ext3 extended attributes"
86 depends on EXT3_FS
87 default y
88 help
89 Extended attributes are name:value pairs associated with inodes by
90 the kernel or by users (see the attr(5) manual page, or visit
91 <http://acl.bestbits.at/> for details).
92
93 If unsure, say N.
94
95 You need this for POSIX ACL support on ext3.
96
97config EXT3_FS_POSIX_ACL
98 bool "Ext3 POSIX Access Control Lists"
99 depends on EXT3_FS_XATTR
100 help
101 Posix Access Control Lists (ACLs) support permissions for users and
102 groups beyond the owner/group/world scheme.
103
104 To learn more about Access Control Lists, visit the Posix ACLs for
105 Linux website <http://acl.bestbits.at/>.
106
107 If you don't know what Access Control Lists are, say N
108
109config EXT3_FS_SECURITY
110 bool "Ext3 Security Labels"
111 depends on EXT3_FS_XATTR
112 help
113 Security labels support alternative access control models
114 implemented by security modules like SELinux. This option
115 enables an extended attribute handler for file security
116 labels in the ext3 filesystem.
117
118 If you are not using a security module that requires using
119 extended attributes for file security labels, say N.
120
121config JBD
122# CONFIG_JBD could be its own option (even modular), but until there are
123# other users than ext3, we will simply make it be the same as CONFIG_EXT3_FS
124# dep_tristate ' Journal Block Device support (JBD for ext3)' CONFIG_JBD $CONFIG_EXT3_FS
125 tristate
126 default EXT3_FS
127 help
128 This is a generic journaling layer for block devices. It is
129 currently used by the ext3 file system, but it could also be used to
130 add journal support to other file systems or block devices such as
131 RAID or LVM.
132
133 If you are using the ext3 file system, you need to say Y here. If
134 you are not using ext3 then you will probably want to say N.
135
136 To compile this device as a module, choose M here: the module will be
137 called jbd. If you are compiling ext3 into the kernel, you cannot
138 compile this code as a module.
139
140config JBD_DEBUG
141 bool "JBD (ext3) debugging support"
142 depends on JBD
143 help
144 If you are using the ext3 journaled file system (or potentially any
145 other file system/device using JBD), this option allows you to
146 enable debugging output while the system is running, in order to
147 help track down any problems you are having. By default the
148 debugging output will be turned off.
149
150 If you select Y here, then you will be able to turn on debugging
151 with "echo N > /proc/sys/fs/jbd-debug", where N is a number between
152 1 and 5, the higher the number, the more debugging output is
153 generated. To turn debugging off again, do
154 "echo 0 > /proc/sys/fs/jbd-debug".
155
156config FS_MBCACHE
157# Meta block cache for Extended Attributes (ext2/ext3)
158 tristate
159 depends on EXT2_FS_XATTR || EXT3_FS_XATTR
160 default y if EXT2_FS=y || EXT3_FS=y
161 default m if EXT2_FS=m || EXT3_FS=m
162
163config REISERFS_FS
164 tristate "Reiserfs support"
165 help
166 Stores not just filenames but the files themselves in a balanced
167 tree. Uses journaling.
168
169 Balanced trees are more efficient than traditional file system
170 architectural foundations.
171
172 In general, ReiserFS is as fast as ext2, but is very efficient with
173 large directories and small files. Additional patches are needed
174 for NFS and quotas, please see <http://www.namesys.com/> for links.
175
176 It is more easily extended to have features currently found in
177 database and keyword search systems than block allocation based file
178 systems are. The next version will be so extended, and will support
179 plugins consistent with our motto ``It takes more than a license to
180 make source code open.''
181
182 Read <http://www.namesys.com/> to learn more about reiserfs.
183
184 Sponsored by Threshold Networks, Emusic.com, and Bigstorage.com.
185
186 If you like it, you can pay us to add new features to it that you
187 need, buy a support contract, or pay us to port it to another OS.
188
189config REISERFS_CHECK
190 bool "Enable reiserfs debug mode"
191 depends on REISERFS_FS
192 help
193 If you set this to Y, then ReiserFS will perform every check it can
194 possibly imagine of its internal consistency throughout its
195 operation. It will also go substantially slower. More than once we
196 have forgotten that this was on, and then gone despondent over the
197 latest benchmarks.:-) Use of this option allows our team to go all
198 out in checking for consistency when debugging without fear of its
199 effect on end users. If you are on the verge of sending in a bug
200 report, say Y and you might get a useful error message. Almost
201 everyone should say N.
202
203config REISERFS_PROC_INFO
204 bool "Stats in /proc/fs/reiserfs"
205 depends on REISERFS_FS
206 help
207 Create under /proc/fs/reiserfs a hierarchy of files, displaying
208 various ReiserFS statistics and internal data at the expense of
209 making your kernel or module slightly larger (+8 KB). This also
210 increases the amount of kernel memory required for each mount.
211 Almost everyone but ReiserFS developers and people fine-tuning
212 reiserfs or tracing problems should say N.
213
214config REISERFS_FS_XATTR
215 bool "ReiserFS extended attributes"
216 depends on REISERFS_FS
217 help
218 Extended attributes are name:value pairs associated with inodes by
219 the kernel or by users (see the attr(5) manual page, or visit
220 <http://acl.bestbits.at/> for details).
221
222 If unsure, say N.
223
224config REISERFS_FS_POSIX_ACL
225 bool "ReiserFS POSIX Access Control Lists"
226 depends on REISERFS_FS_XATTR
227 help
228 Posix Access Control Lists (ACLs) support permissions for users and
229 groups beyond the owner/group/world scheme.
230
231 To learn more about Access Control Lists, visit the Posix ACLs for
232 Linux website <http://acl.bestbits.at/>.
233
234 If you don't know what Access Control Lists are, say N
235
236config REISERFS_FS_SECURITY
237 bool "ReiserFS Security Labels"
238 depends on REISERFS_FS_XATTR
239 help
240 Security labels support alternative access control models
241 implemented by security modules like SELinux. This option
242 enables an extended attribute handler for file security
243 labels in the ReiserFS filesystem.
244
245 If you are not using a security module that requires using
246 extended attributes for file security labels, say N.
247
248config JFS_FS
249 tristate "JFS filesystem support"
250 select NLS
251 help
252 This is a port of IBM's Journaled Filesystem . More information is
253 available in the file <file:Documentation/filesystems/jfs.txt>.
254
255 If you do not intend to use the JFS filesystem, say N.
256
257config JFS_POSIX_ACL
258 bool "JFS POSIX Access Control Lists"
259 depends on JFS_FS
260 help
261 Posix Access Control Lists (ACLs) support permissions for users and
262 groups beyond the owner/group/world scheme.
263
264 To learn more about Access Control Lists, visit the Posix ACLs for
265 Linux website <http://acl.bestbits.at/>.
266
267 If you don't know what Access Control Lists are, say N
268
269config JFS_SECURITY
270 bool "JFS Security Labels"
271 depends on JFS_FS
272 help
273 Security labels support alternative access control models
274 implemented by security modules like SELinux. This option
275 enables an extended attribute handler for file security
276 labels in the jfs filesystem.
277
278 If you are not using a security module that requires using
279 extended attributes for file security labels, say N.
280
281config JFS_DEBUG
282 bool "JFS debugging"
283 depends on JFS_FS
284 help
285 If you are experiencing any problems with the JFS filesystem, say
286 Y here. This will result in additional debugging messages to be
287 written to the system log. Under normal circumstances, this
288 results in very little overhead.
289
290config JFS_STATISTICS
291 bool "JFS statistics"
292 depends on JFS_FS
293 help
294 Enabling this option will cause statistics from the JFS file system
295 to be made available to the user in the /proc/fs/jfs/ directory.
296
297config FS_POSIX_ACL
298# Posix ACL utility routines (for now, only ext2/ext3/jfs/reiserfs)
299#
300# NOTE: you can implement Posix ACLs without these helpers (XFS does).
301# Never use this symbol for ifdefs.
302#
303 bool
304 depends on EXT2_FS_POSIX_ACL || EXT3_FS_POSIX_ACL || JFS_POSIX_ACL || REISERFS_FS_POSIX_ACL || NFSD_V4
305 default y
306
307source "fs/xfs/Kconfig"
308
309config MINIX_FS
310 tristate "Minix fs support"
311 help
312 Minix is a simple operating system used in many classes about OS's.
313 The minix file system (method to organize files on a hard disk
314 partition or a floppy disk) was the original file system for Linux,
315 but has been superseded by the second extended file system ext2fs.
316 You don't want to use the minix file system on your hard disk
317 because of certain built-in restrictions, but it is sometimes found
318 on older Linux floppy disks. This option will enlarge your kernel
319 by about 28 KB. If unsure, say N.
320
321 To compile this file system support as a module, choose M here: the
322 module will be called minix. Note that the file system of your root
323 partition (the one containing the directory /) cannot be compiled as
324 a module.
325
326config ROMFS_FS
327 tristate "ROM file system support"
328 ---help---
329 This is a very small read-only file system mainly intended for
330 initial ram disks of installation disks, but it could be used for
331 other read-only media as well. Read
332 <file:Documentation/filesystems/romfs.txt> for details.
333
334 To compile this file system support as a module, choose M here: the
335 module will be called romfs. Note that the file system of your
336 root partition (the one containing the directory /) cannot be a
337 module.
338
339 If you don't know whether you need it, then you don't need it:
340 answer N.
341
342config QUOTA
343 bool "Quota support"
344 help
345 If you say Y here, you will be able to set per user limits for disk
346 usage (also called disk quotas). Currently, it works for the
347 ext2, ext3, and reiserfs file system. ext3 also supports journalled
348 quotas for which you don't need to run quotacheck(8) after an unclean
349 shutdown. You need additional software in order to use quota support
350 (you can download sources from
351 <http://www.sf.net/projects/linuxquota/>). For further details, read
352 the Quota mini-HOWTO, available from
353 <http://www.tldp.org/docs.html#howto>, or the documentation provided
354 with the quota tools. Probably the quota support is only useful for
355 multi user systems. If unsure, say N.
356
357config QFMT_V1
358 tristate "Old quota format support"
359 depends on QUOTA
360 help
361 This quota format was (is) used by kernels earlier than 2.4.22. If
362 you have quota working and you don't want to convert to new quota
363 format say Y here.
364
365config QFMT_V2
366 tristate "Quota format v2 support"
367 depends on QUOTA
368 help
369 This quota format allows using quotas with 32-bit UIDs/GIDs. If you
370 need this functionality say Y here. Note that you will need recent
371 quota utilities (>= 3.01) for new quota format with this kernel.
372
373config QUOTACTL
374 bool
375 depends on XFS_QUOTA || QUOTA
376 default y
377
378config DNOTIFY
379 bool "Dnotify support" if EMBEDDED
380 default y
381 help
382 Dnotify is a directory-based per-fd file change notification system
383 that uses signals to communicate events to user-space. There exist
384 superior alternatives, but some applications may still rely on
385 dnotify.
386
387 Because of this, if unsure, say Y.
388
389config AUTOFS_FS
390 tristate "Kernel automounter support"
391 help
392 The automounter is a tool to automatically mount remote file systems
393 on demand. This implementation is partially kernel-based to reduce
394 overhead in the already-mounted case; this is unlike the BSD
395 automounter (amd), which is a pure user space daemon.
396
397 To use the automounter you need the user-space tools from the autofs
398 package; you can find the location in <file:Documentation/Changes>.
399 You also want to answer Y to "NFS file system support", below.
400
401 If you want to use the newer version of the automounter with more
402 features, say N here and say Y to "Kernel automounter v4 support",
403 below.
404
405 To compile this support as a module, choose M here: the module will be
406 called autofs.
407
408 If you are not a part of a fairly large, distributed network, you
409 probably do not need an automounter, and can say N here.
410
411config AUTOFS4_FS
412 tristate "Kernel automounter version 4 support (also supports v3)"
413 help
414 The automounter is a tool to automatically mount remote file systems
415 on demand. This implementation is partially kernel-based to reduce
416 overhead in the already-mounted case; this is unlike the BSD
417 automounter (amd), which is a pure user space daemon.
418
419 To use the automounter you need the user-space tools from
420 <ftp://ftp.kernel.org/pub/linux/daemons/autofs/v4/>; you also
421 want to answer Y to "NFS file system support", below.
422
423 To compile this support as a module, choose M here: the module will be
424 called autofs4. You will need to add "alias autofs autofs4" to your
425 modules configuration file.
426
427 If you are not a part of a fairly large, distributed network or
428 don't have a laptop which needs to dynamically reconfigure to the
429 local network, you probably do not need an automounter, and can say
430 N here.
431
432menu "CD-ROM/DVD Filesystems"
433
434config ISO9660_FS
435 tristate "ISO 9660 CDROM file system support"
436 help
437 This is the standard file system used on CD-ROMs. It was previously
438 known as "High Sierra File System" and is called "hsfs" on other
439 Unix systems. The so-called Rock-Ridge extensions which allow for
440 long Unix filenames and symbolic links are also supported by this
441 driver. If you have a CD-ROM drive and want to do more with it than
442 just listen to audio CDs and watch its LEDs, say Y (and read
443 <file:Documentation/filesystems/isofs.txt> and the CD-ROM-HOWTO,
444 available from <http://www.tldp.org/docs.html#howto>), thereby
445 enlarging your kernel by about 27 KB; otherwise say N.
446
447 To compile this file system support as a module, choose M here: the
448 module will be called isofs.
449
450config JOLIET
451 bool "Microsoft Joliet CDROM extensions"
452 depends on ISO9660_FS
453 select NLS
454 help
455 Joliet is a Microsoft extension for the ISO 9660 CD-ROM file system
456 which allows for long filenames in unicode format (unicode is the
457 new 16 bit character code, successor to ASCII, which encodes the
458 characters of almost all languages of the world; see
459 <http://www.unicode.org/> for more information). Say Y here if you
460 want to be able to read Joliet CD-ROMs under Linux.
461
462config ZISOFS
463 bool "Transparent decompression extension"
464 depends on ISO9660_FS
465 select ZLIB_INFLATE
466 help
467 This is a Linux-specific extension to RockRidge which lets you store
468 data in compressed form on a CD-ROM and have it transparently
469 decompressed when the CD-ROM is accessed. See
470 <http://www.kernel.org/pub/linux/utils/fs/zisofs/> for the tools
471 necessary to create such a filesystem. Say Y here if you want to be
472 able to read such compressed CD-ROMs.
473
474config ZISOFS_FS
475# for fs/nls/Config.in
476 tristate
477 depends on ZISOFS
478 default ISO9660_FS
479
480config UDF_FS
481 tristate "UDF file system support"
482 help
483 This is the new file system used on some CD-ROMs and DVDs. Say Y if
484 you intend to mount DVD discs or CDRW's written in packet mode, or
485 if written to by other UDF utilities, such as DirectCD.
486 Please read <file:Documentation/filesystems/udf.txt>.
487
488 To compile this file system support as a module, choose M here: the
489 module will be called udf.
490
491 If unsure, say N.
492
493config UDF_NLS
494 bool
495 default y
496 depends on (UDF_FS=m && NLS) || (UDF_FS=y && NLS=y)
497
498endmenu
499
500menu "DOS/FAT/NT Filesystems"
501
502config FAT_FS
503 tristate
504 select NLS
505 help
506 If you want to use one of the FAT-based file systems (the MS-DOS and
507 VFAT (Windows 95) file systems), then you must say Y or M here
508 to include FAT support. You will then be able to mount partitions or
509 diskettes with FAT-based file systems and transparently access the
510 files on them, i.e. MSDOS files will look and behave just like all
511 other Unix files.
512
513 This FAT support is not a file system in itself, it only provides
514 the foundation for the other file systems. You will have to say Y or
515 M to at least one of "MSDOS fs support" or "VFAT fs support" in
516 order to make use of it.
517
518 Another way to read and write MSDOS floppies and hard drive
519 partitions from within Linux (but not transparently) is with the
520 mtools ("man mtools") program suite. You don't need to say Y here in
521 order to do that.
522
523 If you need to move large files on floppies between a DOS and a
524 Linux box, say Y here, mount the floppy under Linux with an MSDOS
525 file system and use GNU tar's M option. GNU tar is a program
526 available for Unix and DOS ("man tar" or "info tar").
527
528 It is now also becoming possible to read and write compressed FAT
529 file systems; read <file:Documentation/filesystems/fat_cvf.txt> for
530 details.
531
532 The FAT support will enlarge your kernel by about 37 KB. If unsure,
533 say Y.
534
535 To compile this as a module, choose M here: the module will be called
536 fat. Note that if you compile the FAT support as a module, you
537 cannot compile any of the FAT-based file systems into the kernel
538 -- they will have to be modules as well.
539
540config MSDOS_FS
541 tristate "MSDOS fs support"
542 select FAT_FS
543 help
544 This allows you to mount MSDOS partitions of your hard drive (unless
545 they are compressed; to access compressed MSDOS partitions under
546 Linux, you can either use the DOS emulator DOSEMU, described in the
547 DOSEMU-HOWTO, available from
548 <http://www.tldp.org/docs.html#howto>, or try dmsdosfs in
549 <ftp://ibiblio.org/pub/Linux/system/filesystems/dosfs/>. If you
550 intend to use dosemu with a non-compressed MSDOS partition, say Y
551 here) and MSDOS floppies. This means that file access becomes
552 transparent, i.e. the MSDOS files look and behave just like all
553 other Unix files.
554
555 If you have Windows 95 or Windows NT installed on your MSDOS
556 partitions, you should use the VFAT file system (say Y to "VFAT fs
557 support" below), or you will not be able to see the long filenames
558 generated by Windows 95 / Windows NT.
559
560 This option will enlarge your kernel by about 7 KB. If unsure,
561 answer Y. This will only work if you said Y to "DOS FAT fs support"
562 as well. To compile this as a module, choose M here: the module will
563 be called msdos.
564
565config VFAT_FS
566 tristate "VFAT (Windows-95) fs support"
567 select FAT_FS
568 help
569 This option provides support for normal Windows file systems with
570 long filenames. That includes non-compressed FAT-based file systems
571 used by Windows 95, Windows 98, Windows NT 4.0, and the Unix
572 programs from the mtools package.
573
574 The VFAT support enlarges your kernel by about 10 KB and it only
575 works if you said Y to the "DOS FAT fs support" above. Please read
576 the file <file:Documentation/filesystems/vfat.txt> for details. If
577 unsure, say Y.
578
579 To compile this as a module, choose M here: the module will be called
580 vfat.
581
582config FAT_DEFAULT_CODEPAGE
583 int "Default codepage for FAT"
584 depends on MSDOS_FS || VFAT_FS
585 default 437
586 help
587 This option should be set to the codepage of your FAT filesystems.
588 It can be overridden with the "codepage" mount option.
589 See <file:Documentation/filesystems/vfat.txt> for more information.
590
591config FAT_DEFAULT_IOCHARSET
592 string "Default iocharset for FAT"
593 depends on VFAT_FS
594 default "iso8859-1"
595 help
596 Set this to the default input/output character set you'd
597 like FAT to use. It should probably match the character set
598 that most of your FAT filesystems use, and can be overridden
599 with the "iocharset" mount option for FAT filesystems.
600 Note that "utf8" is not recommended for FAT filesystems.
601 If unsure, you shouldn't set "utf8" here.
602 See <file:Documentation/filesystems/vfat.txt> for more information.
603
604config NTFS_FS
605 tristate "NTFS file system support"
606 select NLS
607 help
608 NTFS is the file system of Microsoft Windows NT, 2000, XP and 2003.
609
610 Saying Y or M here enables read support. There is partial, but
611 safe, write support available. For write support you must also
612 say Y to "NTFS write support" below.
613
614 There are also a number of user-space tools available, called
615 ntfsprogs. These include ntfsundelete and ntfsresize, that work
616 without NTFS support enabled in the kernel.
617
618 This is a rewrite from scratch of Linux NTFS support and replaced
619 the old NTFS code starting with Linux 2.5.11. A backport to
620 the Linux 2.4 kernel series is separately available as a patch
621 from the project web site.
622
623 For more information see <file:Documentation/filesystems/ntfs.txt>
624 and <http://linux-ntfs.sourceforge.net/>.
625
626 To compile this file system support as a module, choose M here: the
627 module will be called ntfs.
628
629 If you are not using Windows NT, 2000, XP or 2003 in addition to
630 Linux on your computer it is safe to say N.
631
632config NTFS_DEBUG
633 bool "NTFS debugging support"
634 depends on NTFS_FS
635 help
636 If you are experiencing any problems with the NTFS file system, say
637 Y here. This will result in additional consistency checks to be
638 performed by the driver as well as additional debugging messages to
639 be written to the system log. Note that debugging messages are
640 disabled by default. To enable them, supply the option debug_msgs=1
641 at the kernel command line when booting the kernel or as an option
642 to insmod when loading the ntfs module. Once the driver is active,
643 you can enable debugging messages by doing (as root):
644 echo 1 > /proc/sys/fs/ntfs-debug
645 Replacing the "1" with "0" would disable debug messages.
646
647 If you leave debugging messages disabled, this results in little
648 overhead, but enabling debug messages results in very significant
649 slowdown of the system.
650
651 When reporting bugs, please try to have available a full dump of
652 debugging messages while the misbehaviour was occurring.
653
654config NTFS_RW
655 bool "NTFS write support"
656 depends on NTFS_FS
657 help
658 This enables the partial, but safe, write support in the NTFS driver.
659
660 The only supported operation is overwriting existing files, without
661 changing the file length. No file or directory creation, deletion or
662 renaming is possible. Note only non-resident files can be written to
663 so you may find that some very small files (<500 bytes or so) cannot
664 be written to.
665
666 While we cannot guarantee that it will not damage any data, we have
667 so far not received a single report where the driver would have
668 damaged someones data so we assume it is perfectly safe to use.
669
670 Note: While write support is safe in this version (a rewrite from
671 scratch of the NTFS support), it should be noted that the old NTFS
672 write support, included in Linux 2.5.10 and before (since 1997),
673 is not safe.
674
675 This is currently useful with TopologiLinux. TopologiLinux is run
676 on top of any DOS/Microsoft Windows system without partitioning your
677 hard disk. Unlike other Linux distributions TopologiLinux does not
678 need its own partition. For more information see
679 <http://topologi-linux.sourceforge.net/>
680
681 It is perfectly safe to say N here.
682
683endmenu
684
685menu "Pseudo filesystems"
686
687config PROC_FS
688 bool "/proc file system support"
689 help
690 This is a virtual file system providing information about the status
691 of the system. "Virtual" means that it doesn't take up any space on
692 your hard disk: the files are created on the fly by the kernel when
693 you try to access them. Also, you cannot read the files with older
694 version of the program less: you need to use more or cat.
695
696 It's totally cool; for example, "cat /proc/interrupts" gives
697 information about what the different IRQs are used for at the moment
698 (there is a small number of Interrupt ReQuest lines in your computer
699 that are used by the attached devices to gain the CPU's attention --
700 often a source of trouble if two devices are mistakenly configured
701 to use the same IRQ). The program procinfo to display some
702 information about your system gathered from the /proc file system.
703
704 Before you can use the /proc file system, it has to be mounted,
705 meaning it has to be given a location in the directory hierarchy.
706 That location should be /proc. A command such as "mount -t proc proc
707 /proc" or the equivalent line in /etc/fstab does the job.
708
709 The /proc file system is explained in the file
710 <file:Documentation/filesystems/proc.txt> and on the proc(5) manpage
711 ("man 5 proc").
712
713 This option will enlarge your kernel by about 67 KB. Several
714 programs depend on this, so everyone should say Y here.
715
716config PROC_KCORE
717 bool "/proc/kcore support" if !ARM
718 depends on PROC_FS && MMU
719
720config SYSFS
721 bool "sysfs file system support" if EMBEDDED
722 default y
723 help
724 The sysfs filesystem is a virtual filesystem that the kernel uses to
725 export internal kernel objects, their attributes, and their
726 relationships to one another.
727
728 Users can use sysfs to ascertain useful information about the running
729 kernel, such as the devices the kernel has discovered on each bus and
730 which driver each is bound to. sysfs can also be used to tune devices
731 and other kernel subsystems.
732
733 Some system agents rely on the information in sysfs to operate.
734 /sbin/hotplug uses device and object attributes in sysfs to assist in
735 delegating policy decisions, like persistantly naming devices.
736
737 sysfs is currently used by the block subsystem to mount the root
738 partition. If sysfs is disabled you must specify the boot device on
739 the kernel boot command line via its major and minor numbers. For
740 example, "root=03:01" for /dev/hda1.
741
742 Designers of embedded systems may wish to say N here to conserve space.
743
744config DEVFS_FS
745 bool "/dev file system support (OBSOLETE)"
746 depends on EXPERIMENTAL
747 help
748 This is support for devfs, a virtual file system (like /proc) which
749 provides the file system interface to device drivers, normally found
750 in /dev. Devfs does not depend on major and minor number
751 allocations. Device drivers register entries in /dev which then
752 appear automatically, which means that the system administrator does
753 not have to create character and block special device files in the
754 /dev directory using the mknod command (or MAKEDEV script) anymore.
755
756 This is work in progress. If you want to use this, you *must* read
757 the material in <file:Documentation/filesystems/devfs/>, especially
758 the file README there.
759
760 Note that devfs no longer manages /dev/pts! If you are using UNIX98
761 ptys, you will also need to mount the /dev/pts filesystem (devpts).
762
763 Note that devfs has been obsoleted by udev,
764 <http://www.kernel.org/pub/linux/utils/kernel/hotplug/>.
765 It has been stripped down to a bare minimum and is only provided for
766 legacy installations that use its naming scheme which is
767 unfortunately different from the names normal Linux installations
768 use.
769
770 If unsure, say N.
771
772config DEVFS_MOUNT
773 bool "Automatically mount at boot"
774 depends on DEVFS_FS
775 help
776 This option appears if you have CONFIG_DEVFS_FS enabled. Setting
777 this to 'Y' will make the kernel automatically mount devfs onto /dev
778 when the system is booted, before the init thread is started.
779 You can override this with the "devfs=nomount" boot option.
780
781 If unsure, say N.
782
783config DEVFS_DEBUG
784 bool "Debug devfs"
785 depends on DEVFS_FS
786 help
787 If you say Y here, then the /dev file system code will generate
788 debugging messages. See the file
789 <file:Documentation/filesystems/devfs/boot-options> for more
790 details.
791
792 If unsure, say N.
793
794config DEVPTS_FS_XATTR
795 bool "/dev/pts Extended Attributes"
796 depends on UNIX98_PTYS
797 help
798 Extended attributes are name:value pairs associated with inodes by
799 the kernel or by users (see the attr(5) manual page, or visit
800 <http://acl.bestbits.at/> for details).
801
802 If unsure, say N.
803
804config DEVPTS_FS_SECURITY
805 bool "/dev/pts Security Labels"
806 depends on DEVPTS_FS_XATTR
807 help
808 Security labels support alternative access control models
809 implemented by security modules like SELinux. This option
810 enables an extended attribute handler for file security
811 labels in the /dev/pts filesystem.
812
813 If you are not using a security module that requires using
814 extended attributes for file security labels, say N.
815
816config TMPFS
817 bool "Virtual memory file system support (former shm fs)"
818 help
819 Tmpfs is a file system which keeps all files in virtual memory.
820
821 Everything in tmpfs is temporary in the sense that no files will be
822 created on your hard drive. The files live in memory and swap
823 space. If you unmount a tmpfs instance, everything stored therein is
824 lost.
825
826 See <file:Documentation/filesystems/tmpfs.txt> for details.
827
828config TMPFS_XATTR
829 bool "tmpfs Extended Attributes"
830 depends on TMPFS
831 help
832 Extended attributes are name:value pairs associated with inodes by
833 the kernel or by users (see the attr(5) manual page, or visit
834 <http://acl.bestbits.at/> for details).
835
836 If unsure, say N.
837
838config TMPFS_SECURITY
839 bool "tmpfs Security Labels"
840 depends on TMPFS_XATTR
841 help
842 Security labels support alternative access control models
843 implemented by security modules like SELinux. This option
844 enables an extended attribute handler for file security
845 labels in the tmpfs filesystem.
846 If you are not using a security module that requires using
847 extended attributes for file security labels, say N.
848
849config HUGETLBFS
850 bool "HugeTLB file system support"
851 depends X86 || IA64 || PPC64 || SPARC64 || SUPERH || X86_64 || BROKEN
852
853config HUGETLB_PAGE
854 def_bool HUGETLBFS
855
856config RAMFS
857 bool
858 default y
859 ---help---
860 Ramfs is a file system which keeps all files in RAM. It allows
861 read and write access.
862
863 It is more of an programming example than a useable file system. If
864 you need a file system which lives in RAM with limit checking use
865 tmpfs.
866
867 To compile this as a module, choose M here: the module will be called
868 ramfs.
869
870endmenu
871
872menu "Miscellaneous filesystems"
873
874config ADFS_FS
875 tristate "ADFS file system support (EXPERIMENTAL)"
876 depends on EXPERIMENTAL
877 help
878 The Acorn Disc Filing System is the standard file system of the
879 RiscOS operating system which runs on Acorn's ARM-based Risc PC
880 systems and the Acorn Archimedes range of machines. If you say Y
881 here, Linux will be able to read from ADFS partitions on hard drives
882 and from ADFS-formatted floppy discs. If you also want to be able to
883 write to those devices, say Y to "ADFS write support" below.
884
885 The ADFS partition should be the first partition (i.e.,
886 /dev/[hs]d?1) on each of your drives. Please read the file
887 <file:Documentation/filesystems/adfs.txt> for further details.
888
889 To compile this code as a module, choose M here: the module will be
890 called adfs.
891
892 If unsure, say N.
893
894config ADFS_FS_RW
895 bool "ADFS write support (DANGEROUS)"
896 depends on ADFS_FS
897 help
898 If you say Y here, you will be able to write to ADFS partitions on
899 hard drives and ADFS-formatted floppy disks. This is experimental
900 codes, so if you're unsure, say N.
901
902config AFFS_FS
903 tristate "Amiga FFS file system support (EXPERIMENTAL)"
904 depends on EXPERIMENTAL
905 help
906 The Fast File System (FFS) is the common file system used on hard
907 disks by Amiga(tm) systems since AmigaOS Version 1.3 (34.20). Say Y
908 if you want to be able to read and write files from and to an Amiga
909 FFS partition on your hard drive. Amiga floppies however cannot be
910 read with this driver due to an incompatibility of the floppy
911 controller used in an Amiga and the standard floppy controller in
912 PCs and workstations. Read <file:Documentation/filesystems/affs.txt>
913 and <file:fs/affs/Changes>.
914
915 With this driver you can also mount disk files used by Bernd
916 Schmidt's Un*X Amiga Emulator
917 (<http://www.freiburg.linux.de/~uae/>).
918 If you want to do this, you will also need to say Y or M to "Loop
919 device support", above.
920
921 To compile this file system support as a module, choose M here: the
922 module will be called affs. If unsure, say N.
923
924config HFS_FS
925 tristate "Apple Macintosh file system support (EXPERIMENTAL)"
926 depends on EXPERIMENTAL
927 help
928 If you say Y here, you will be able to mount Macintosh-formatted
929 floppy disks and hard drive partitions with full read-write access.
930 Please read <file:fs/hfs/HFS.txt> to learn about the available mount
931 options.
932
933 To compile this file system support as a module, choose M here: the
934 module will be called hfs.
935
936config HFSPLUS_FS
937 tristate "Apple Extended HFS file system support"
938 select NLS
939 select NLS_UTF8
940 help
941 If you say Y here, you will be able to mount extended format
942 Macintosh-formatted hard drive partitions with full read-write access.
943
944 This file system is often called HFS+ and was introduced with
945 MacOS 8. It includes all Mac specific filesystem data such as
946 data forks and creator codes, but it also has several UNIX
947 style features such as file ownership and permissions.
948
949config BEFS_FS
950 tristate "BeOS file system (BeFS) support (read only) (EXPERIMENTAL)"
951 depends on EXPERIMENTAL
952 select NLS
953 help
954 The BeOS File System (BeFS) is the native file system of Be, Inc's
955 BeOS. Notable features include support for arbitrary attributes
956 on files and directories, and database-like indeces on selected
957 attributes. (Also note that this driver doesn't make those features
958 available at this time). It is a 64 bit filesystem, so it supports
959 extremly large volumes and files.
960
961 If you use this filesystem, you should also say Y to at least one
962 of the NLS (native language support) options below.
963
964 If you don't know what this is about, say N.
965
966 To compile this as a module, choose M here: the module will be
967 called befs.
968
969config BEFS_DEBUG
970 bool "Debug BeFS"
971 depends on BEFS_FS
972 help
973 If you say Y here, you can use the 'debug' mount option to enable
974 debugging output from the driver.
975
976config BFS_FS
977 tristate "BFS file system support (EXPERIMENTAL)"
978 depends on EXPERIMENTAL
979 help
980 Boot File System (BFS) is a file system used under SCO UnixWare to
981 allow the bootloader access to the kernel image and other important
982 files during the boot process. It is usually mounted under /stand
983 and corresponds to the slice marked as "STAND" in the UnixWare
984 partition. You should say Y if you want to read or write the files
985 on your /stand slice from within Linux. You then also need to say Y
986 to "UnixWare slices support", below. More information about the BFS
987 file system is contained in the file
988 <file:Documentation/filesystems/bfs.txt>.
989
990 If you don't know what this is about, say N.
991
992 To compile this as a module, choose M here: the module will be called
993 bfs. Note that the file system of your root partition (the one
994 containing the directory /) cannot be compiled as a module.
995
996
997
998config EFS_FS
999 tristate "EFS file system support (read only) (EXPERIMENTAL)"
1000 depends on EXPERIMENTAL
1001 help
1002 EFS is an older file system used for non-ISO9660 CD-ROMs and hard
1003 disk partitions by SGI's IRIX operating system (IRIX 6.0 and newer
1004 uses the XFS file system for hard disk partitions however).
1005
1006 This implementation only offers read-only access. If you don't know
1007 what all this is about, it's safe to say N. For more information
1008 about EFS see its home page at <http://aeschi.ch.eu.org/efs/>.
1009
1010 To compile the EFS file system support as a module, choose M here: the
1011 module will be called efs.
1012
1013config JFFS_FS
1014 tristate "Journalling Flash File System (JFFS) support"
1015 depends on MTD
1016 help
1017 JFFS is the Journaling Flash File System developed by Axis
1018 Communications in Sweden, aimed at providing a crash/powerdown-safe
1019 file system for disk-less embedded devices. Further information is
1020 available at (<http://developer.axis.com/software/jffs/>).
1021
1022config JFFS_FS_VERBOSE
1023 int "JFFS debugging verbosity (0 = quiet, 3 = noisy)"
1024 depends on JFFS_FS
1025 default "0"
1026 help
1027 Determines the verbosity level of the JFFS debugging messages.
1028
1029config JFFS_PROC_FS
1030 bool "JFFS stats available in /proc filesystem"
1031 depends on JFFS_FS && PROC_FS
1032 help
1033 Enabling this option will cause statistics from mounted JFFS file systems
1034 to be made available to the user in the /proc/fs/jffs/ directory.
1035
1036config JFFS2_FS
1037 tristate "Journalling Flash File System v2 (JFFS2) support"
1038 select CRC32
1039 depends on MTD
1040 help
1041 JFFS2 is the second generation of the Journalling Flash File System
1042 for use on diskless embedded devices. It provides improved wear
1043 levelling, compression and support for hard links. You cannot use
1044 this on normal block devices, only on 'MTD' devices.
1045
1046 Further information on the design and implementation of JFFS2 is
1047 available at <http://sources.redhat.com/jffs2/>.
1048
1049config JFFS2_FS_DEBUG
1050 int "JFFS2 debugging verbosity (0 = quiet, 2 = noisy)"
1051 depends on JFFS2_FS
1052 default "0"
1053 help
1054 This controls the amount of debugging messages produced by the JFFS2
1055 code. Set it to zero for use in production systems. For evaluation,
1056 testing and debugging, it's advisable to set it to one. This will
1057 enable a few assertions and will print debugging messages at the
1058 KERN_DEBUG loglevel, where they won't normally be visible. Level 2
1059 is unlikely to be useful - it enables extra debugging in certain
1060 areas which at one point needed debugging, but when the bugs were
1061 located and fixed, the detailed messages were relegated to level 2.
1062
1063 If reporting bugs, please try to have available a full dump of the
1064 messages at debug level 1 while the misbehaviour was occurring.
1065
1066config JFFS2_FS_NAND
1067 bool "JFFS2 support for NAND flash"
1068 depends on JFFS2_FS
1069 default n
1070 help
1071 This enables the support for NAND flash in JFFS2. NAND is a newer
1072 type of flash chip design than the traditional NOR flash, with
1073 higher density but a handful of characteristics which make it more
1074 interesting for the file system to use.
1075
1076 Say 'N' unless you have NAND flash.
1077
1078config JFFS2_FS_NOR_ECC
1079 bool "JFFS2 support for ECC'd NOR flash (EXPERIMENTAL)"
1080 depends on JFFS2_FS && EXPERIMENTAL
1081 default n
1082 help
1083 This enables the experimental support for NOR flash with transparent
1084 ECC for JFFS2. This type of flash chip is not common, however it is
1085 available from ST Microelectronics.
1086
1087config JFFS2_COMPRESSION_OPTIONS
1088 bool "Advanced compression options for JFFS2"
1089 depends on JFFS2_FS
1090 default n
1091 help
1092 Enabling this option allows you to explicitly choose which
1093 compression modules, if any, are enabled in JFFS2. Removing
1094 compressors and mean you cannot read existing file systems,
1095 and enabling experimental compressors can mean that you
1096 write a file system which cannot be read by a standard kernel.
1097
1098 If unsure, you should _definitely_ say 'N'.
1099
1100config JFFS2_ZLIB
1101 bool "JFFS2 ZLIB compression support" if JFFS2_COMPRESSION_OPTIONS
1102 select ZLIB_INFLATE
1103 select ZLIB_DEFLATE
1104 depends on JFFS2_FS
1105 default y
1106 help
1107 Zlib is designed to be a free, general-purpose, legally unencumbered,
1108 lossless data-compression library for use on virtually any computer
1109 hardware and operating system. See <http://www.gzip.org/zlib/> for
1110 further information.
1111
1112 Say 'Y' if unsure.
1113
1114config JFFS2_RTIME
1115 bool "JFFS2 RTIME compression support" if JFFS2_COMPRESSION_OPTIONS
1116 depends on JFFS2_FS
1117 default y
1118 help
1119 Rtime does manage to recompress already-compressed data. Say 'Y' if unsure.
1120
1121config JFFS2_RUBIN
1122 bool "JFFS2 RUBIN compression support" if JFFS2_COMPRESSION_OPTIONS
1123 depends on JFFS2_FS
1124 default n
1125 help
1126 RUBINMIPS and DYNRUBIN compressors. Say 'N' if unsure.
1127
1128choice
1129 prompt "JFFS2 default compression mode" if JFFS2_COMPRESSION_OPTIONS
1130 default JFFS2_CMODE_PRIORITY
1131 depends on JFFS2_FS
1132 help
1133 You can set here the default compression mode of JFFS2 from
1134 the available compression modes. Don't touch if unsure.
1135
1136config JFFS2_CMODE_NONE
1137 bool "no compression"
1138 help
1139 Uses no compression.
1140
1141config JFFS2_CMODE_PRIORITY
1142 bool "priority"
1143 help
1144 Tries the compressors in a predefinied order and chooses the first
1145 successful one.
1146
1147config JFFS2_CMODE_SIZE
1148 bool "size (EXPERIMENTAL)"
1149 help
1150 Tries all compressors and chooses the one which has the smallest
1151 result.
1152
1153endchoice
1154
1155config CRAMFS
1156 tristate "Compressed ROM file system support (cramfs)"
1157 select ZLIB_INFLATE
1158 help
1159 Saying Y here includes support for CramFs (Compressed ROM File
1160 System). CramFs is designed to be a simple, small, and compressed
1161 file system for ROM based embedded systems. CramFs is read-only,
1162 limited to 256MB file systems (with 16MB files), and doesn't support
1163 16/32 bits uid/gid, hard links and timestamps.
1164
1165 See <file:Documentation/filesystems/cramfs.txt> and
1166 <file:fs/cramfs/README> for further information.
1167
1168 To compile this as a module, choose M here: the module will be called
1169 cramfs. Note that the root file system (the one containing the
1170 directory /) cannot be compiled as a module.
1171
1172 If unsure, say N.
1173
1174config VXFS_FS
1175 tristate "FreeVxFS file system support (VERITAS VxFS(TM) compatible)"
1176 help
1177 FreeVxFS is a file system driver that support the VERITAS VxFS(TM)
1178 file system format. VERITAS VxFS(TM) is the standard file system
1179 of SCO UnixWare (and possibly others) and optionally available
1180 for Sunsoft Solaris, HP-UX and many other operating systems.
1181 Currently only readonly access is supported.
1182
1183 NOTE: the file system type as used by mount(1), mount(2) and
1184 fstab(5) is 'vxfs' as it describes the file system format, not
1185 the actual driver.
1186
1187 To compile this as a module, choose M here: the module will be
1188 called freevxfs. If unsure, say N.
1189
1190
1191config HPFS_FS
1192 tristate "OS/2 HPFS file system support"
1193 help
1194 OS/2 is IBM's operating system for PC's, the same as Warp, and HPFS
1195 is the file system used for organizing files on OS/2 hard disk
1196 partitions. Say Y if you want to be able to read files from and
1197 write files to an OS/2 HPFS partition on your hard drive. OS/2
1198 floppies however are in regular MSDOS format, so you don't need this
1199 option in order to be able to read them. Read
1200 <file:Documentation/filesystems/hpfs.txt>.
1201
1202 To compile this file system support as a module, choose M here: the
1203 module will be called hpfs. If unsure, say N.
1204
1205
1206
1207config QNX4FS_FS
1208 tristate "QNX4 file system support (read only)"
1209 help
1210 This is the file system used by the real-time operating systems
1211 QNX 4 and QNX 6 (the latter is also called QNX RTP).
1212 Further information is available at <http://www.qnx.com/>.
1213 Say Y if you intend to mount QNX hard disks or floppies.
1214 Unless you say Y to "QNX4FS read-write support" below, you will
1215 only be able to read these file systems.
1216
1217 To compile this file system support as a module, choose M here: the
1218 module will be called qnx4.
1219
1220 If you don't know whether you need it, then you don't need it:
1221 answer N.
1222
1223config QNX4FS_RW
1224 bool "QNX4FS write support (DANGEROUS)"
1225 depends on QNX4FS_FS && EXPERIMENTAL && BROKEN
1226 help
1227 Say Y if you want to test write support for QNX4 file systems.
1228
1229 It's currently broken, so for now:
1230 answer N.
1231
1232
1233
1234config SYSV_FS
1235 tristate "System V/Xenix/V7/Coherent file system support"
1236 help
1237 SCO, Xenix and Coherent are commercial Unix systems for Intel
1238 machines, and Version 7 was used on the DEC PDP-11. Saying Y
1239 here would allow you to read from their floppies and hard disk
1240 partitions.
1241
1242 If you have floppies or hard disk partitions like that, it is likely
1243 that they contain binaries from those other Unix systems; in order
1244 to run these binaries, you will want to install linux-abi which is a
1245 a set of kernel modules that lets you run SCO, Xenix, Wyse,
1246 UnixWare, Dell Unix and System V programs under Linux. It is
1247 available via FTP (user: ftp) from
1248 <ftp://ftp.openlinux.org/pub/people/hch/linux-abi/>).
1249 NOTE: that will work only for binaries from Intel-based systems;
1250 PDP ones will have to wait until somebody ports Linux to -11 ;-)
1251
1252 If you only intend to mount files from some other Unix over the
1253 network using NFS, you don't need the System V file system support
1254 (but you need NFS file system support obviously).
1255
1256 Note that this option is generally not needed for floppies, since a
1257 good portable way to transport files and directories between unixes
1258 (and even other operating systems) is given by the tar program ("man
1259 tar" or preferably "info tar"). Note also that this option has
1260 nothing whatsoever to do with the option "System V IPC". Read about
1261 the System V file system in
1262 <file:Documentation/filesystems/sysv-fs.txt>.
1263 Saying Y here will enlarge your kernel by about 27 KB.
1264
1265 To compile this as a module, choose M here: the module will be called
1266 sysv.
1267
1268 If you haven't heard about all of this before, it's safe to say N.
1269
1270
1271
1272config UFS_FS
1273 tristate "UFS file system support (read only)"
1274 help
1275 BSD and derivate versions of Unix (such as SunOS, FreeBSD, NetBSD,
1276 OpenBSD and NeXTstep) use a file system called UFS. Some System V
1277 Unixes can create and mount hard disk partitions and diskettes using
1278 this file system as well. Saying Y here will allow you to read from
1279 these partitions; if you also want to write to them, say Y to the
1280 experimental "UFS file system write support", below. Please read the
1281 file <file:Documentation/filesystems/ufs.txt> for more information.
1282
1283 The recently released UFS2 variant (used in FreeBSD 5.x) is
1284 READ-ONLY supported.
1285
1286 If you only intend to mount files from some other Unix over the
1287 network using NFS, you don't need the UFS file system support (but
1288 you need NFS file system support obviously).
1289
1290 Note that this option is generally not needed for floppies, since a
1291 good portable way to transport files and directories between unixes
1292 (and even other operating systems) is given by the tar program ("man
1293 tar" or preferably "info tar").
1294
1295 When accessing NeXTstep files, you may need to convert them from the
1296 NeXT character set to the Latin1 character set; use the program
1297 recode ("info recode") for this purpose.
1298
1299 To compile the UFS file system support as a module, choose M here: the
1300 module will be called ufs.
1301
1302 If you haven't heard about all of this before, it's safe to say N.
1303
1304config UFS_FS_WRITE
1305 bool "UFS file system write support (DANGEROUS)"
1306 depends on UFS_FS && EXPERIMENTAL
1307 help
1308 Say Y here if you want to try writing to UFS partitions. This is
1309 experimental, so you should back up your UFS partitions beforehand.
1310
1311endmenu
1312
1313menu "Network File Systems"
1314 depends on NET
1315
1316config NFS_FS
1317 tristate "NFS file system support"
1318 depends on INET
1319 select LOCKD
1320 select SUNRPC
1321 help
1322 If you are connected to some other (usually local) Unix computer
1323 (using SLIP, PLIP, PPP or Ethernet) and want to mount files residing
1324 on that computer (the NFS server) using the Network File Sharing
1325 protocol, say Y. "Mounting files" means that the client can access
1326 the files with usual UNIX commands as if they were sitting on the
1327 client's hard disk. For this to work, the server must run the
1328 programs nfsd and mountd (but does not need to have NFS file system
1329 support enabled in its kernel). NFS is explained in the Network
1330 Administrator's Guide, available from
1331 <http://www.tldp.org/docs.html#guide>, on its man page: "man
1332 nfs", and in the NFS-HOWTO.
1333
1334 A superior but less widely used alternative to NFS is provided by
1335 the Coda file system; see "Coda file system support" below.
1336
1337 If you say Y here, you should have said Y to TCP/IP networking also.
1338 This option would enlarge your kernel by about 27 KB.
1339
1340 To compile this file system support as a module, choose M here: the
1341 module will be called nfs.
1342
1343 If you are configuring a diskless machine which will mount its root
1344 file system over NFS at boot time, say Y here and to "Kernel
1345 level IP autoconfiguration" above and to "Root file system on NFS"
1346 below. You cannot compile this driver as a module in this case.
1347 There are two packages designed for booting diskless machines over
1348 the net: netboot, available from
1349 <http://ftp1.sourceforge.net/netboot/>, and Etherboot,
1350 available from <http://ftp1.sourceforge.net/etherboot/>.
1351
1352 If you don't know what all this is about, say N.
1353
1354config NFS_V3
1355 bool "Provide NFSv3 client support"
1356 depends on NFS_FS
1357 help
1358 Say Y here if you want your NFS client to be able to speak version
1359 3 of the NFS protocol.
1360
1361 If unsure, say Y.
1362
1363config NFS_V4
1364 bool "Provide NFSv4 client support (EXPERIMENTAL)"
1365 depends on NFS_FS && EXPERIMENTAL
1366 select RPCSEC_GSS_KRB5
1367 help
1368 Say Y here if you want your NFS client to be able to speak the newer
1369 version 4 of the NFS protocol.
1370
1371 Note: Requires auxiliary userspace daemons which may be found on
1372 http://www.citi.umich.edu/projects/nfsv4/
1373
1374 If unsure, say N.
1375
1376config NFS_DIRECTIO
1377 bool "Allow direct I/O on NFS files (EXPERIMENTAL)"
1378 depends on NFS_FS && EXPERIMENTAL
1379 help
1380 This option enables applications to perform uncached I/O on files
1381 in NFS file systems using the O_DIRECT open() flag. When O_DIRECT
1382 is set for a file, its data is not cached in the system's page
1383 cache. Data is moved to and from user-level application buffers
1384 directly. Unlike local disk-based file systems, NFS O_DIRECT has
1385 no alignment restrictions.
1386
1387 Unless your program is designed to use O_DIRECT properly, you are
1388 much better off allowing the NFS client to manage data caching for
1389 you. Misusing O_DIRECT can cause poor server performance or network
1390 storms. This kernel build option defaults OFF to avoid exposing
1391 system administrators unwittingly to a potentially hazardous
1392 feature.
1393
1394 For more details on NFS O_DIRECT, see fs/nfs/direct.c.
1395
1396 If unsure, say N. This reduces the size of the NFS client, and
1397 causes open() to return EINVAL if a file residing in NFS is
1398 opened with the O_DIRECT flag.
1399
1400config NFSD
1401 tristate "NFS server support"
1402 depends on INET
1403 select LOCKD
1404 select SUNRPC
1405 select EXPORTFS
1406 help
1407 If you want your Linux box to act as an NFS *server*, so that other
1408 computers on your local network which support NFS can access certain
1409 directories on your box transparently, you have two options: you can
1410 use the self-contained user space program nfsd, in which case you
1411 should say N here, or you can say Y and use the kernel based NFS
1412 server. The advantage of the kernel based solution is that it is
1413 faster.
1414
1415 In either case, you will need support software; the respective
1416 locations are given in the file <file:Documentation/Changes> in the
1417 NFS section.
1418
1419 If you say Y here, you will get support for version 2 of the NFS
1420 protocol (NFSv2). If you also want NFSv3, say Y to the next question
1421 as well.
1422
1423 Please read the NFS-HOWTO, available from
1424 <http://www.tldp.org/docs.html#howto>.
1425
1426 To compile the NFS server support as a module, choose M here: the
1427 module will be called nfsd. If unsure, say N.
1428
1429config NFSD_V3
1430 bool "Provide NFSv3 server support"
1431 depends on NFSD
1432 help
1433 If you would like to include the NFSv3 server as well as the NFSv2
1434 server, say Y here. If unsure, say Y.
1435
1436config NFSD_V4
1437 bool "Provide NFSv4 server support (EXPERIMENTAL)"
1438 depends on NFSD_V3 && EXPERIMENTAL
1439 select NFSD_TCP
1440 help
1441 If you would like to include the NFSv4 server as well as the NFSv2
1442 and NFSv3 servers, say Y here. This feature is experimental, and
1443 should only be used if you are interested in helping to test NFSv4.
1444 If unsure, say N.
1445
1446config NFSD_TCP
1447 bool "Provide NFS server over TCP support"
1448 depends on NFSD
1449 default y
1450 help
1451 If you want your NFS server to support TCP connections, say Y here.
1452 TCP connections usually perform better than the default UDP when
1453 the network is lossy or congested. If unsure, say Y.
1454
1455config ROOT_NFS
1456 bool "Root file system on NFS"
1457 depends on NFS_FS=y && IP_PNP
1458 help
1459 If you want your Linux box to mount its whole root file system (the
1460 one containing the directory /) from some other computer over the
1461 net via NFS (presumably because your box doesn't have a hard disk),
1462 say Y. Read <file:Documentation/nfsroot.txt> for details. It is
1463 likely that in this case, you also want to say Y to "Kernel level IP
1464 autoconfiguration" so that your box can discover its network address
1465 at boot time.
1466
1467 Most people say N here.
1468
1469config LOCKD
1470 tristate
1471
1472config LOCKD_V4
1473 bool
1474 depends on NFSD_V3 || NFS_V3
1475 default y
1476
1477config EXPORTFS
1478 tristate
1479
1480config SUNRPC
1481 tristate
1482
1483config SUNRPC_GSS
1484 tristate
1485
1486config RPCSEC_GSS_KRB5
1487 tristate "Secure RPC: Kerberos V mechanism (EXPERIMENTAL)"
1488 depends on SUNRPC && EXPERIMENTAL
1489 select SUNRPC_GSS
1490 select CRYPTO
1491 select CRYPTO_MD5
1492 select CRYPTO_DES
1493 help
1494 Provides for secure RPC calls by means of a gss-api
1495 mechanism based on Kerberos V5. This is required for
1496 NFSv4.
1497
1498 Note: Requires an auxiliary userspace daemon which may be found on
1499 http://www.citi.umich.edu/projects/nfsv4/
1500
1501 If unsure, say N.
1502
1503config RPCSEC_GSS_SPKM3
1504 tristate "Secure RPC: SPKM3 mechanism (EXPERIMENTAL)"
1505 depends on SUNRPC && EXPERIMENTAL
1506 select SUNRPC_GSS
1507 select CRYPTO
1508 select CRYPTO_MD5
1509 select CRYPTO_DES
1510 help
1511 Provides for secure RPC calls by means of a gss-api
1512 mechanism based on the SPKM3 public-key mechanism.
1513
1514 Note: Requires an auxiliary userspace daemon which may be found on
1515 http://www.citi.umich.edu/projects/nfsv4/
1516
1517 If unsure, say N.
1518
1519config SMB_FS
1520 tristate "SMB file system support (to mount Windows shares etc.)"
1521 depends on INET
1522 select NLS
1523 help
1524 SMB (Server Message Block) is the protocol Windows for Workgroups
1525 (WfW), Windows 95/98, Windows NT and OS/2 Lan Manager use to share
1526 files and printers over local networks. Saying Y here allows you to
1527 mount their file systems (often called "shares" in this context) and
1528 access them just like any other Unix directory. Currently, this
1529 works only if the Windows machines use TCP/IP as the underlying
1530 transport protocol, and not NetBEUI. For details, read
1531 <file:Documentation/filesystems/smbfs.txt> and the SMB-HOWTO,
1532 available from <http://www.tldp.org/docs.html#howto>.
1533
1534 Note: if you just want your box to act as an SMB *server* and make
1535 files and printing services available to Windows clients (which need
1536 to have a TCP/IP stack), you don't need to say Y here; you can use
1537 the program SAMBA (available from <ftp://ftp.samba.org/pub/samba/>)
1538 for that.
1539
1540 General information about how to connect Linux, Windows machines and
1541 Macs is on the WWW at <http://www.eats.com/linux_mac_win.html>.
1542
1543 To compile the SMB support as a module, choose M here: the module will
1544 be called smbfs. Most people say N, however.
1545
1546config SMB_NLS_DEFAULT
1547 bool "Use a default NLS"
1548 depends on SMB_FS
1549 help
1550 Enabling this will make smbfs use nls translations by default. You
1551 need to specify the local charset (CONFIG_NLS_DEFAULT) in the nls
1552 settings and you need to give the default nls for the SMB server as
1553 CONFIG_SMB_NLS_REMOTE.
1554
1555 The nls settings can be changed at mount time, if your smbmount
1556 supports that, using the codepage and iocharset parameters.
1557
1558 smbmount from samba 2.2.0 or later supports this.
1559
1560config SMB_NLS_REMOTE
1561 string "Default Remote NLS Option"
1562 depends on SMB_NLS_DEFAULT
1563 default "cp437"
1564 help
1565 This setting allows you to specify a default value for which
1566 codepage the server uses. If this field is left blank no
1567 translations will be done by default. The local codepage/charset
1568 default to CONFIG_NLS_DEFAULT.
1569
1570 The nls settings can be changed at mount time, if your smbmount
1571 supports that, using the codepage and iocharset parameters.
1572
1573 smbmount from samba 2.2.0 or later supports this.
1574
1575config CIFS
1576 tristate "CIFS support (advanced network filesystem for Samba, Window and other CIFS compliant servers)"
1577 depends on INET
1578 select NLS
1579 help
1580 This is the client VFS module for the Common Internet File System
1581 (CIFS) protocol which is the successor to the Server Message Block
1582 (SMB) protocol, the native file sharing mechanism for most early
1583 PC operating systems. The CIFS protocol is fully supported by
1584 file servers such as Windows 2000 (including Windows 2003, NT 4
1585 and Windows XP) as well by Samba (which provides excellent CIFS
1586 server support for Linux and many other operating systems). Currently
1587 you must use the smbfs client filesystem to access older SMB servers
1588 such as Windows 9x and OS/2.
1589
1590 The intent of the cifs module is to provide an advanced
1591 network file system client for mounting to CIFS compliant servers,
1592 including support for dfs (hierarchical name space), secure per-user
1593 session establishment, safe distributed caching (oplock), optional
1594 packet signing, Unicode and other internationalization improvements,
1595 and optional Winbind (nsswitch) integration. You do not need to enable
1596 cifs if running only a (Samba) server. It is possible to enable both
1597 smbfs and cifs (e.g. if you are using CIFS for accessing Windows 2003
1598 and Samba 3 servers, and smbfs for accessing old servers). If you need
1599 to mount to Samba or Windows 2003 servers from this machine, say Y.
1600
1601config CIFS_STATS
1602 bool "CIFS statistics"
1603 depends on CIFS
1604 help
1605 Enabling this option will cause statistics for each server share
1606 mounted by the cifs client to be displayed in /proc/fs/cifs/Stats
1607
1608config CIFS_XATTR
1609 bool "CIFS extended attributes (EXPERIMENTAL)"
1610 depends on CIFS
1611 help
1612 Extended attributes are name:value pairs associated with inodes by
1613 the kernel or by users (see the attr(5) manual page, or visit
1614 <http://acl.bestbits.at/> for details). CIFS maps the name of
1615 extended attributes beginning with the user namespace prefix
1616 to SMB/CIFS EAs. EAs are stored on Windows servers without the
1617 user namespace prefix, but their names are seen by Linux cifs clients
1618 prefaced by the user namespace prefix. The system namespace
1619 (used by some filesystems to store ACLs) is not supported at
1620 this time.
1621
1622 If unsure, say N.
1623
1624config CIFS_POSIX
1625 bool "CIFS POSIX Extensions (EXPERIMENTAL)"
1626 depends on CIFS_XATTR
1627 help
1628 Enabling this option will cause the cifs client to attempt to
1629 negotiate a newer dialect with servers, such as Samba 3.0.5
1630 or later, that optionally can handle more POSIX like (rather
1631 than Windows like) file behavior. It also enables
1632 support for POSIX ACLs (getfacl and setfacl) to servers
1633 (such as Samba 3.10 and later) which can negotiate
1634 CIFS POSIX ACL support. If unsure, say N.
1635
1636config CIFS_EXPERIMENTAL
1637 bool "CIFS Experimental Features (EXPERIMENTAL)"
1638 depends on CIFS
1639 help
1640 Enables cifs features under testing. These features
1641 are highly experimental. If unsure, say N.
1642
1643config NCP_FS
1644 tristate "NCP file system support (to mount NetWare volumes)"
1645 depends on IPX!=n || INET
1646 help
1647 NCP (NetWare Core Protocol) is a protocol that runs over IPX and is
1648 used by Novell NetWare clients to talk to file servers. It is to
1649 IPX what NFS is to TCP/IP, if that helps. Saying Y here allows you
1650 to mount NetWare file server volumes and to access them just like
1651 any other Unix directory. For details, please read the file
1652 <file:Documentation/filesystems/ncpfs.txt> in the kernel source and
1653 the IPX-HOWTO from <http://www.tldp.org/docs.html#howto>.
1654
1655 You do not have to say Y here if you want your Linux box to act as a
1656 file *server* for Novell NetWare clients.
1657
1658 General information about how to connect Linux, Windows machines and
1659 Macs is on the WWW at <http://www.eats.com/linux_mac_win.html>.
1660
1661 To compile this as a module, choose M here: the module will be called
1662 ncpfs. Say N unless you are connected to a Novell network.
1663
1664source "fs/ncpfs/Kconfig"
1665
1666config CODA_FS
1667 tristate "Coda file system support (advanced network fs)"
1668 depends on INET
1669 help
1670 Coda is an advanced network file system, similar to NFS in that it
1671 enables you to mount file systems of a remote server and access them
1672 with regular Unix commands as if they were sitting on your hard
1673 disk. Coda has several advantages over NFS: support for
1674 disconnected operation (e.g. for laptops), read/write server
1675 replication, security model for authentication and encryption,
1676 persistent client caches and write back caching.
1677
1678 If you say Y here, your Linux box will be able to act as a Coda
1679 *client*. You will need user level code as well, both for the
1680 client and server. Servers are currently user level, i.e. they need
1681 no kernel support. Please read
1682 <file:Documentation/filesystems/coda.txt> and check out the Coda
1683 home page <http://www.coda.cs.cmu.edu/>.
1684
1685 To compile the coda client support as a module, choose M here: the
1686 module will be called coda.
1687
1688config CODA_FS_OLD_API
1689 bool "Use 96-bit Coda file identifiers"
1690 depends on CODA_FS
1691 help
1692 A new kernel-userspace API had to be introduced for Coda v6.0
1693 to support larger 128-bit file identifiers as needed by the
1694 new realms implementation.
1695
1696 However this new API is not backward compatible with older
1697 clients. If you really need to run the old Coda userspace
1698 cache manager then say Y.
1699
1700 For most cases you probably want to say N.
1701
1702config AFS_FS
1703# for fs/nls/Config.in
1704 tristate "Andrew File System support (AFS) (Experimental)"
1705 depends on INET && EXPERIMENTAL
1706 select RXRPC
1707 help
1708 If you say Y here, you will get an experimental Andrew File System
1709 driver. It currently only supports unsecured read-only AFS access.
1710
1711 See <file:Documentation/filesystems/afs.txt> for more intormation.
1712
1713 If unsure, say N.
1714
1715config RXRPC
1716 tristate
1717
1718endmenu
1719
1720menu "Partition Types"
1721
1722source "fs/partitions/Kconfig"
1723
1724endmenu
1725
1726source "fs/nls/Kconfig"
1727
1728endmenu
1729